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/cvs/Coro/Coro/State.xs

Comparing Coro/Coro/State.xs (file contents):
Revision 1.147 by root, Mon Mar 19 15:50:48 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
…		…
88	/* prefer perl internal functions over our own? */	111	/* prefer perl internal functions over our own? */
89	#ifndef CORO_PREFER_PERL_FUNCTIONS	112	#ifndef CORO_PREFER_PERL_FUNCTIONS
90	# define CORO_PREFER_PERL_FUNCTIONS 0	113	# define CORO_PREFER_PERL_FUNCTIONS 0
91	#endif	114	#endif
92		115
93	/* The next macro should declare a variable stacklevel that contains and approximation	116	/* The next macros try to return the current stack pointer, in an as
94	* to the current C stack pointer. Its property is that it changes with each call	117	* portable way as possible. */
95	* and should be unique. */
96	#define dSTACKLEVEL int stacklevel	118	#define dSTACKLEVEL volatile char stacklevel
97	#define STACKLEVEL ((void *)&stacklevel)	119	#define STACKLEVEL ((void *)&stacklevel)
98		120
99	#define IN_DESTRUCT (PL_main_cv == Nullcv)	121	#define IN_DESTRUCT (PL_main_cv == Nullcv)
100		122
101	#if __GNUC__ >= 3	123	#if __GNUC__ >= 3
102	# define attribute(x) __attribute__(x)	124	# define attribute(x) __attribute__(x)
103	# define BARRIER __asm__ __volatile__ ("" : : : "memory")	125	# define BARRIER __asm__ __volatile__ ("" : : : "memory")
		126	# define expect(expr,value) __builtin_expect ((expr),(value))
104	#else	127	#else
105	# define attribute(x)	128	# define attribute(x)
106	# define BARRIER	129	# define BARRIER
		130	# define expect(expr,value) (expr)
107	#endif	131	#endif
		132
		133	#define expect_false(expr) expect ((expr) != 0, 0)
		134	#define expect_true(expr) expect ((expr) != 0, 1)
108		135
109	#define NOINLINE attribute ((noinline))	136	#define NOINLINE attribute ((noinline))
110		137
111	#include "CoroAPI.h"	138	#include "CoroAPI.h"
112		139
…		…
129	};	156	};
130		157
131	static size_t coro_stacksize = CORO_STACKSIZE;	158	static size_t coro_stacksize = CORO_STACKSIZE;
132	static struct CoroAPI coroapi;	159	static struct CoroAPI coroapi;
133	static AV *main_mainstack; /* used to differentiate between $main and others */	160	static AV *main_mainstack; /* used to differentiate between $main and others */
		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 */
		170
		171	/* async_pool helper stuff */
		172	static SV *sv_pool_rss;
		173	static SV *sv_pool_size;
		174	static AV *av_async_pool;
		175
		176	/* Coro::AnyEvent */
		177	static SV *sv_activity;
136		178
137	static struct coro_cctx *cctx_first;	179	static struct coro_cctx *cctx_first;
138	static int cctx_count, cctx_idle;	180	static int cctx_count, cctx_idle;
		181
		182	enum {
		183	CC_MAPPED = 0x01,
		184	CC_NOREUSE = 0x02, /* throw this away after tracing */
		185	CC_TRACE = 0x04,
		186	CC_TRACE_SUB = 0x08, /* trace sub calls */
		187	CC_TRACE_LINE = 0x10, /* trace each statement */
		188	CC_TRACE_ALL = CC_TRACE_SUB | CC_TRACE_LINE,
		189	};
139		190
140	/* this is a structure representing a c-level coroutine */	191	/* this is a structure representing a c-level coroutine */
141	typedef struct coro_cctx {	192	typedef struct coro_cctx {
142	struct coro_cctx *next;	193	struct coro_cctx *next;
143		194
…		…
152	coro_context cctx;	203	coro_context cctx;
153		204
154	#if CORO_USE_VALGRIND	205	#if CORO_USE_VALGRIND
155	int valgrind_id;	206	int valgrind_id;
156	#endif	207	#endif
157	char inuse, mapped;	208	unsigned char flags;
158	} coro_cctx;	209	} coro_cctx;
159		210
160	enum {	211	enum {
161	CF_RUNNING = 0x0001, /* coroutine is running */	212	CF_RUNNING = 0x0001, /* coroutine is running */
162	CF_READY = 0x0002, /* coroutine is ready */	213	CF_READY = 0x0002, /* coroutine is ready */
163	CF_NEW = 0x0004, /* has never been switched to */	214	CF_NEW = 0x0004, /* has never been switched to */
164	CF_DESTROYED = 0x0008, /* coroutine data has been freed */	215	CF_DESTROYED = 0x0008, /* coroutine data has been freed */
165	};	216	};
166		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
167	/* this is a structure representing a perl-level coroutine */	231	/* this is a structure representing a perl-level coroutine */
168	struct coro {	232	struct coro {
169	/* the c coroutine allocated to this perl coroutine, if any */	233	/* the c coroutine allocated to this perl coroutine, if any */
170	coro_cctx *cctx;	234	coro_cctx *cctx;
171		235
		236	/* process data */
		237	AV *mainstack;
		238	perl_slots *slot; /* basically the saved sp */
		239
172	/* data associated with this coroutine (initial args) */	240	AV *args; /* data associated with this coroutine (initial args) */
173	AV *args;	241	int refcnt; /* coroutines are refcounted, yes */
174	int refcnt;
175	int save; /* CORO_SAVE flags */
176	int flags; /* CF_ flags */	242	int flags; /* CF_ flags */
		243	HV *hv; /* the perl hash associated with this coro, if any */
177		244
178	/* optionally saved, might be zero */	245	/* statistics */
179	AV *defav; /* @_ */	246	int usecount; /* number of transfers to this coro */
180	SV *defsv; /* $_ */
181	SV *errsv; /* $@ */
182	GV *deffh; /* default filehandle */
183	SV *irssv; /* $/ */
184	SV *irssv_sv; /* real $/ cache */
185
186	#define VAR(name,type) type name;
187	# include "state.h"
188	#undef VAR
189		247
190	/* coro process data */	248	/* coro process data */
191	int prio;	249	int prio;
		250	SV *throw; /* exception to be thrown */
		251
		252	/* async_pool */
		253	SV *saved_deffh;
		254
		255	/* linked list */
		256	struct coro *next, *prev;
192	};	257	};
193		258
194	typedef struct coro *Coro__State;	259	typedef struct coro *Coro__State;
195	typedef struct coro *Coro__State_or_hashref;	260	typedef struct coro *Coro__State_or_hashref;
196		261
…		…
203	#define PRIO_IDLE -3	268	#define PRIO_IDLE -3
204	#define PRIO_MIN -4	269	#define PRIO_MIN -4
205		270
206	/* for Coro.pm */	271	/* for Coro.pm */
207	static SV *coro_current;	272	static SV *coro_current;
		273	static SV *coro_readyhook;
208	static AV *coro_ready [PRIO_MAX-PRIO_MIN+1];	274	static AV *coro_ready [PRIO_MAX-PRIO_MIN+1];
209	static int coro_nready;	275	static int coro_nready;
		276	static struct coro *coro_first;
210		277
211	/** lowlevel stuff **********************************************************/	278	/** lowlevel stuff **********************************************************/
		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	}
212		309
213	static AV *	310	static AV *
214	coro_clone_padlist (pTHX_ CV *cv)	311	coro_clone_padlist (pTHX_ CV *cv)
215	{	312	{
216	AV *padlist = CvPADLIST (cv);	313	AV *padlist = CvPADLIST (cv);
217	AV *newpadlist, *newpad;	314	AV *newpadlist, *newpad;
218		315
219	newpadlist = newAV ();	316	newpadlist = newAV ();
220	AvREAL_off (newpadlist);	317	AvREAL_off (newpadlist);
221	#if PERL_VERSION_ATLEAST (5,9,0)	318	#if PERL_VERSION_ATLEAST (5,10,0)
222	Perl_pad_push (aTHX_ padlist, AvFILLp (padlist) + 1);	319	Perl_pad_push (aTHX_ padlist, AvFILLp (padlist) + 1);
223	#else	320	#else
224	Perl_pad_push (aTHX_ padlist, AvFILLp (padlist) + 1, 1);	321	Perl_pad_push (aTHX_ padlist, AvFILLp (padlist) + 1, 1);
225	#endif	322	#endif
226	newpad = (AV *)AvARRAY (padlist)[AvFILLp (padlist)];	323	newpad = (AV *)AvARRAY (padlist)[AvFILLp (padlist)];
…		…
264		361
265	/* casting is fun. */	362	/* casting is fun. */
266	while (&PL_sv_undef != (SV *)(padlist = (AV *)av_pop (av)))	363	while (&PL_sv_undef != (SV *)(padlist = (AV *)av_pop (av)))
267	free_padlist (aTHX_ padlist);	364	free_padlist (aTHX_ padlist);
268		365
269	SvREFCNT_dec (av);
270
271	return 0;	366	return 0;
272	}	367	}
273		368
274	#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
275		371
276	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	};
277		376
278	#define CORO_MAGIC(cv) \	377	#define CORO_MAGIC(sv,type) \
279	SvMAGIC (cv) \	378	SvMAGIC (sv) \
280	? SvMAGIC (cv)->mg_type == PERL_MAGIC_coro \	379	? SvMAGIC (sv)->mg_type == type \
281	? SvMAGIC (cv) \	380	? SvMAGIC (sv) \
282	: mg_find ((SV *)cv, PERL_MAGIC_coro) \	381	: mg_find (sv, type) \
283	: 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))
284		412
285	/* the next two functions merely cache the padlists */	413	/* the next two functions merely cache the padlists */
286	static void	414	static void
287	get_padlist (pTHX_ CV *cv)	415	get_padlist (pTHX_ CV *cv)
288	{	416	{
289	MAGIC *mg = CORO_MAGIC (cv);	417	MAGIC *mg = CORO_MAGIC_cv (cv);
290	AV *av;	418	AV *av;
291		419
292	if (mg && AvFILLp ((av = (AV *)mg->mg_obj)) >= 0)	420	if (expect_true (mg && AvFILLp ((av = (AV *)mg->mg_obj)) >= 0))
293	CvPADLIST (cv) = (AV *)AvARRAY (av)[AvFILLp (av)--];	421	CvPADLIST (cv) = (AV *)AvARRAY (av)[AvFILLp (av)--];
294	else	422	else
295	{	423	{
296	#if CORO_PREFER_PERL_FUNCTIONS	424	#if CORO_PREFER_PERL_FUNCTIONS
297	/* this is probably cleaner, but also slower? */	425	/* this is probably cleaner, but also slower? */
…		…
306	}	434	}
307		435
308	static void	436	static void
309	put_padlist (pTHX_ CV *cv)	437	put_padlist (pTHX_ CV *cv)
310	{	438	{
311	MAGIC *mg = CORO_MAGIC (cv);	439	MAGIC *mg = CORO_MAGIC_cv (cv);
312	AV *av;	440	AV *av;
313		441
314	if (!mg)	442	if (expect_false (!mg))
315	{	443	mg = sv_magicext ((SV *)cv, (SV *)newAV (), CORO_MAGIC_type_cv, &coro_cv_vtbl, 0, 0);
316	sv_magic ((SV *)cv, 0, PERL_MAGIC_coro, 0, 0);
317	mg = mg_find ((SV *)cv, PERL_MAGIC_coro);
318	mg->mg_virtual = &vtbl_coro;
319	mg->mg_obj = (SV *)newAV ();
320	}
321		444
322	av = (AV *)mg->mg_obj;	445	av = (AV *)mg->mg_obj;
323		446
324	if (AvFILLp (av) >= AvMAX (av))	447	if (expect_false (AvFILLp (av) >= AvMAX (av)))
325	av_extend (av, AvMAX (av) + 1);	448	av_extend (av, AvMAX (av) + 1);
326		449
327	AvARRAY (av)[++AvFILLp (av)] = (SV *)CvPADLIST (cv);	450	AvARRAY (av)[++AvFILLp (av)] = (SV *)CvPADLIST (cv);
328	}	451	}
329		452
330	/** load & save, init *******************************************************/	453	/** load & save, init *******************************************************/
331
332	#define SB do {
333	#define SE } while (0)
334
335	#define REPLACE_SV(sv,val) SB SvREFCNT_dec (sv); (sv) = (val); (val) = 0; SE
336		454
337	static void	455	static void
338	load_perl (pTHX_ Coro__State c)	456	load_perl (pTHX_ Coro__State c)
339	{	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
340	#define VAR(name,type) PL_ ## name = c->name;	468	#define VAR(name,type) PL_ ## name = slot->name;
341	# include "state.h"	469	# include "state.h"
342	#undef VAR	470	#undef VAR
343
344	if (c->defav) REPLACE_SV (GvAV (PL_defgv), c->defav);
345	if (c->defsv) REPLACE_SV (DEFSV , c->defsv);
346	if (c->errsv) REPLACE_SV (ERRSV , c->errsv);
347	if (c->deffh) REPLACE_SV (PL_defoutgv , c->deffh);
348
349	if (c->irssv)
350	{
351	if (c->irssv == PL_rs || sv_eq (PL_rs, c->irssv))
352	{
353	SvREFCNT_dec (c->irssv);
354	c->irssv = 0;
355	}
356	else
357	{
358	REPLACE_SV (PL_rs, c->irssv);
359	if (!c->irssv_sv) c->irssv_sv = get_sv ("/", 0);
360	sv_setsv (c->irssv_sv, PL_rs);
361	}
362	}
363		471
364	{	472	{
365	dSP;	473	dSP;
		474
366	CV *cv;	475	CV *cv;
367		476
368	/* now do the ugly restore mess */	477	/* now do the ugly restore mess */
369	while ((cv = (CV *)POPs))	478	while (expect_true (cv = (CV *)POPs))
370	{	479	{
371	put_padlist (aTHX_ cv); /* mark this padlist as available */	480	put_padlist (aTHX_ cv); /* mark this padlist as available */
372	CvDEPTH (cv) = PTR2IV (POPs);	481	CvDEPTH (cv) = PTR2IV (POPs);
373	CvPADLIST (cv) = (AV *)POPs;	482	CvPADLIST (cv) = (AV *)POPs;
374	}	483	}
375		484
376	PUTBACK;	485	PUTBACK;
377	}	486	}
378	assert (!PL_comppad || AvARRAY (PL_comppad));//D
379	}	487	}
380		488
381	static void	489	static void
382	save_perl (pTHX_ Coro__State c)	490	save_perl (pTHX_ Coro__State c)
383	{	491	{
384	assert (!PL_comppad || AvARRAY (PL_comppad));//D
385	{	492	{
386	dSP;	493	dSP;
387	I32 cxix = cxstack_ix;	494	I32 cxix = cxstack_ix;
388	PERL_CONTEXT *ccstk = cxstack;	495	PERL_CONTEXT *ccstk = cxstack;
389	PERL_SI *top_si = PL_curstackinfo;	496	PERL_SI *top_si = PL_curstackinfo;
…		…
391	/*	498	/*
392	* the worst thing you can imagine happens first - we have to save	499	* the worst thing you can imagine happens first - we have to save
393	* (and reinitialize) all cv's in the whole callchain :(	500	* (and reinitialize) all cv's in the whole callchain :(
394	*/	501	*/
395		502
396	EXTEND (SP, 3 + 1);
397	PUSHs (Nullsv);	503	XPUSHs (Nullsv);
398	/* this loop was inspired by pp_caller */	504	/* this loop was inspired by pp_caller */
399	for (;;)	505	for (;;)
400	{	506	{
401	while (cxix >= 0)	507	while (expect_true (cxix >= 0))
402	{	508	{
403	PERL_CONTEXT *cx = &ccstk[cxix--];	509	PERL_CONTEXT *cx = &ccstk[cxix--];
404		510
405	if (CxTYPE (cx) == CXt_SUB)	511	if (expect_true (CxTYPE (cx) == CXt_SUB || CxTYPE (cx) == CXt_FORMAT))
406	{	512	{
407	CV *cv = cx->blk_sub.cv;	513	CV *cv = cx->blk_sub.cv;
408		514
409	if (CvDEPTH (cv))	515	if (expect_true (CvDEPTH (cv)))
410	{	516	{
411	EXTEND (SP, 3);	517	EXTEND (SP, 3);
412	PUSHs ((SV *)CvPADLIST (cv));	518	PUSHs ((SV *)CvPADLIST (cv));
413	PUSHs (INT2PTR (SV *, CvDEPTH (cv)));	519	PUSHs (INT2PTR (SV *, (IV)CvDEPTH (cv)));
414	PUSHs ((SV *)cv);	520	PUSHs ((SV *)cv);
415		521
416	CvDEPTH (cv) = 0;	522	CvDEPTH (cv) = 0;
417	get_padlist (aTHX_ cv);	523	get_padlist (aTHX_ cv);
418	}	524	}
419	}	525	}
420	}	526	}
421		527
422	if (top_si->si_type == PERLSI_MAIN)	528	if (expect_true (top_si->si_type == PERLSI_MAIN))
423	break;	529	break;
424		530
425	top_si = top_si->si_prev;	531	top_si = top_si->si_prev;
426	ccstk = top_si->si_cxstack;	532	ccstk = top_si->si_cxstack;
427	cxix = top_si->si_cxix;	533	cxix = top_si->si_cxix;
428	}	534	}
429		535
430	PUTBACK;	536	PUTBACK;
431	}	537	}
432		538
433	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 */
434	c->defsv = c->save & CORO_SAVE_DEFSV ? SvREFCNT_inc (DEFSV) : 0;	540	/* we manually unroll here, as usually 2 slots is enough */
435	c->errsv = c->save & CORO_SAVE_ERRSV ? SvREFCNT_inc (ERRSV) : 0;	541	if (SLOT_COUNT >= 1) CXINC;
436	c->deffh = c->save & CORO_SAVE_DEFFH ? (GV *)SvREFCNT_inc (PL_defoutgv) : 0;	542	if (SLOT_COUNT >= 2) CXINC;
437	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 */
438		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
439	#define VAR(name,type)c->name = PL_ ## name;	561	#define VAR(name,type) slot->name = PL_ ## name;
440	# include "state.h"	562	# include "state.h"
441	#undef VAR	563	#undef VAR
		564	}
442	}	565	}
443		566
444	/*	567	/*
445	* allocate various perl stacks. This is an exact copy	568	* allocate various perl stacks. This is an exact copy
446	* of perl.c:init_stacks, except that it uses less memory	569	* of perl.c:init_stacks, except that it uses less memory
…		…
451	# define coro_init_stacks init_stacks	574	# define coro_init_stacks init_stacks
452	#else	575	#else
453	static void	576	static void
454	coro_init_stacks (pTHX)	577	coro_init_stacks (pTHX)
455	{	578	{
456	PL_curstackinfo = new_stackinfo(128, 1024/sizeof(PERL_CONTEXT));	579	PL_curstackinfo = new_stackinfo(32, 8);
457	PL_curstackinfo->si_type = PERLSI_MAIN;	580	PL_curstackinfo->si_type = PERLSI_MAIN;
458	PL_curstack = PL_curstackinfo->si_stack;	581	PL_curstack = PL_curstackinfo->si_stack;
459	PL_mainstack = PL_curstack; /* remember in case we switch stacks */	582	PL_mainstack = PL_curstack; /* remember in case we switch stacks */
460		583
461	PL_stack_base = AvARRAY(PL_curstack);	584	PL_stack_base = AvARRAY(PL_curstack);
462	PL_stack_sp = PL_stack_base;	585	PL_stack_sp = PL_stack_base;
463	PL_stack_max = PL_stack_base + AvMAX(PL_curstack);	586	PL_stack_max = PL_stack_base + AvMAX(PL_curstack);
464		587
465	New(50,PL_tmps_stack,128,SV*);	588	New(50,PL_tmps_stack,32,SV*);
466	PL_tmps_floor = -1;	589	PL_tmps_floor = -1;
467	PL_tmps_ix = -1;	590	PL_tmps_ix = -1;
468	PL_tmps_max = 128;	591	PL_tmps_max = 32;
469		592
470	New(54,PL_markstack,32,I32);	593	New(54,PL_markstack,16,I32);
471	PL_markstack_ptr = PL_markstack;	594	PL_markstack_ptr = PL_markstack;
472	PL_markstack_max = PL_markstack + 32;	595	PL_markstack_max = PL_markstack + 16;
473		596
474	#ifdef SET_MARK_OFFSET	597	#ifdef SET_MARK_OFFSET
475	SET_MARK_OFFSET;	598	SET_MARK_OFFSET;
476	#endif	599	#endif
477		600
478	New(54,PL_scopestack,32,I32);	601	New(54,PL_scopestack,8,I32);
479	PL_scopestack_ix = 0;	602	PL_scopestack_ix = 0;
480	PL_scopestack_max = 32;	603	PL_scopestack_max = 8;
481		604
482	New(54,PL_savestack,64,ANY);	605	New(54,PL_savestack,24,ANY);
483	PL_savestack_ix = 0;	606	PL_savestack_ix = 0;
484	PL_savestack_max = 64;	607	PL_savestack_max = 24;
485		608
486	#if !PERL_VERSION_ATLEAST (5,9,0)	609	#if !PERL_VERSION_ATLEAST (5,10,0)
487	New(54,PL_retstack,16,OP*);	610	New(54,PL_retstack,4,OP*);
488	PL_retstack_ix = 0;	611	PL_retstack_ix = 0;
489	PL_retstack_max = 16;	612	PL_retstack_max = 4;
490	#endif	613	#endif
491	}	614	}
492	#endif	615	#endif
493		616
494	/*	617	/*
495	* destroy the stacks, the callchain etc...	618	* destroy the stacks, the callchain etc...
496	*/	619	*/
497	static void	620	static void
498	coro_destroy_stacks (pTHX)	621	coro_destroy_stacks (pTHX)
499	{	622	{
500	if (!IN_DESTRUCT)
501	{
502	/* restore all saved variables and stuff */
503	LEAVE_SCOPE (0);
504	assert (PL_tmps_floor == -1);
505
506	/* free all temporaries */
507	FREETMPS;
508	assert (PL_tmps_ix == -1);
509
510	/* unwind all extra stacks */
511	POPSTACK_TO (PL_mainstack);
512
513	/* unwind main stack */
514	dounwind (-1);
515	}
516
517	while (PL_curstackinfo->si_next)	623	while (PL_curstackinfo->si_next)
518	PL_curstackinfo = PL_curstackinfo->si_next;	624	PL_curstackinfo = PL_curstackinfo->si_next;
519		625
520	while (PL_curstackinfo)	626	while (PL_curstackinfo)
521	{	627	{
…		…
531		637
532	Safefree (PL_tmps_stack);	638	Safefree (PL_tmps_stack);
533	Safefree (PL_markstack);	639	Safefree (PL_markstack);
534	Safefree (PL_scopestack);	640	Safefree (PL_scopestack);
535	Safefree (PL_savestack);	641	Safefree (PL_savestack);
536	#if !PERL_VERSION_ATLEAST (5,9,0)	642	#if !PERL_VERSION_ATLEAST (5,10,0)
537	Safefree (PL_retstack);	643	Safefree (PL_retstack);
538	#endif	644	#endif
539	}	645	}
540		646
		647	static size_t
		648	coro_rss (pTHX_ struct coro *coro)
		649	{
		650	size_t rss = sizeof (*coro);
		651
		652	if (coro->mainstack)
		653	{
		654	perl_slots tmp_slot;
		655	perl_slots *slot;
		656
		657	if (coro->flags & CF_RUNNING)
		658	{
		659	slot = &tmp_slot;
		660
		661	#define VAR(name,type) slot->name = PL_ ## name;
		662	# include "state.h"
		663	#undef VAR
		664	}
		665	else
		666	slot = coro->slot;
		667
		668	rss += sizeof (slot->curstackinfo);
		669	rss += (slot->curstackinfo->si_cxmax + 1) * sizeof (PERL_CONTEXT);
		670	rss += sizeof (SV) + sizeof (struct xpvav) + (1 + AvMAX (slot->curstack)) * sizeof (SV *);
		671	rss += slot->tmps_max * sizeof (SV *);
		672	rss += (slot->markstack_max - slot->markstack_ptr) * sizeof (I32);
		673	rss += slot->scopestack_max * sizeof (I32);
		674	rss += slot->savestack_max * sizeof (ANY);
		675
		676	#if !PERL_VERSION_ATLEAST (5,10,0)
		677	rss += slot->retstack_max * sizeof (OP *);
		678	#endif
		679	}
		680
		681	return rss;
		682	}
		683
541	/** coroutine stack handling ************************************************/	684	/** coroutine stack handling ************************************************/
542		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
543	static void	736	static void
544	setup_coro (pTHX_ struct coro *coro)	737	coro_setup (pTHX_ struct coro *coro)
545	{	738	{
546	/*	739	/*
547	* emulate part of the perl startup here.	740	* emulate part of the perl startup here.
548	*/	741	*/
549	coro_init_stacks (aTHX);	742	coro_init_stacks (aTHX);
550		743
		744	PL_runops = RUNOPS_DEFAULT;
551	PL_curcop = &PL_compiling;	745	PL_curcop = &PL_compiling;
552	PL_in_eval = EVAL_NULL;	746	PL_in_eval = EVAL_NULL;
553	PL_comppad = 0;	747	PL_comppad = 0;
554	PL_curpm = 0;	748	PL_curpm = 0;
		749	PL_curpad = 0;
555	PL_localizing = 0;	750	PL_localizing = 0;
556	PL_dirty = 0;	751	PL_dirty = 0;
557	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);
558		767
559	{	768	{
560	dSP;	769	dSP;
561	LOGOP myop;	770	LOGOP myop;
562		771
563	SvREFCNT_dec (GvAV (PL_defgv));
564	GvAV (PL_defgv) = coro->args; coro->args = 0;
565
566	Zero (&myop, 1, LOGOP);	772	Zero (&myop, 1, LOGOP);
567	myop.op_next = Nullop;	773	myop.op_next = Nullop;
568	myop.op_flags = OPf_WANT_VOID;	774	myop.op_flags = OPf_WANT_VOID;
569		775
570	PUSHMARK (SP);	776	PUSHMARK (SP);
571	XPUSHs ((SV *)get_cv ("Coro::State::_coro_init", FALSE));	777	XPUSHs (sv_2mortal (av_shift (GvAV (PL_defgv))));
572	PUTBACK;	778	PUTBACK;
573	PL_op = (OP *)&myop;	779	PL_op = (OP *)&myop;
574	PL_op = PL_ppaddr[OP_ENTERSUB](aTHX);	780	PL_op = PL_ppaddr[OP_ENTERSUB](aTHX);
575	SPAGAIN;	781	SPAGAIN;
576	}	782	}
577		783
578	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);
579	}	826	}
580		827
581	static void	828	static void
582	free_coro_mortal (pTHX)	829	free_coro_mortal (pTHX)
583	{	830	{
584	if (coro_mortal)	831	if (expect_true (coro_mortal))
585	{	832	{
586	SvREFCNT_dec (coro_mortal);	833	SvREFCNT_dec (coro_mortal);
587	coro_mortal = 0;	834	coro_mortal = 0;
588	}	835	}
589	}	836	}
590		837
		838	static int
		839	runops_trace (pTHX)
		840	{
		841	COP *oldcop = 0;
		842	int oldcxix = -2;
		843	struct coro *coro = SvSTATE (coro_current); /* trace cctx is tied to specific coro */
		844	coro_cctx *cctx = coro->cctx;
		845
		846	while ((PL_op = CALL_FPTR (PL_op->op_ppaddr) (aTHX)))
		847	{
		848	PERL_ASYNC_CHECK ();
		849
		850	if (cctx->flags & CC_TRACE_ALL)
		851	{
		852	if (PL_op->op_type == OP_LEAVESUB && cctx->flags & CC_TRACE_SUB)
		853	{
		854	PERL_CONTEXT *cx = &cxstack[cxstack_ix];
		855	SV **bot, **top;
		856	AV *av = newAV (); /* return values */
		857	SV **cb;
		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;
		875	ENTER;
		876	SAVETMPS;
		877	EXTEND (SP, 3);
		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	}
		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	}
		954	}
		955	}
		956	}
		957
		958	TAINT_NOT;
		959	return 0;
		960	}
		961
591	/* 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 */
		963	/* _cctx_init should be careful, as it could be called at almost any time */
		964	/* during execution of a perl program */
592	static void NOINLINE	965	static void NOINLINE
593	prepare_cctx (pTHX_ coro_cctx *cctx)	966	cctx_prepare (pTHX_ coro_cctx *cctx)
594	{	967	{
595	dSP;	968	dSP;
596	LOGOP myop;	969	LOGOP myop;
		970
		971	PL_top_env = &PL_start_env;
		972
		973	if (cctx->flags & CC_TRACE)
		974	PL_runops = runops_trace;
597		975
598	Zero (&myop, 1, LOGOP);	976	Zero (&myop, 1, LOGOP);
599	myop.op_next = PL_op;	977	myop.op_next = PL_op;
600	myop.op_flags = OPf_WANT_VOID | OPf_STACKED;	978	myop.op_flags = OPf_WANT_VOID | OPf_STACKED;
601		979
…		…
607	PL_op = (OP *)&myop;	985	PL_op = (OP *)&myop;
608	PL_op = PL_ppaddr[OP_ENTERSUB](aTHX);	986	PL_op = PL_ppaddr[OP_ENTERSUB](aTHX);
609	SPAGAIN;	987	SPAGAIN;
610	}	988	}
611		989
		990	/*
		991	* this is a _very_ stripped down perl interpreter ;)
		992	*/
612	static void	993	static void
613	coro_run (void *arg)	994	cctx_run (void *arg)
614	{	995	{
615	dTHX;	996	dTHX;
616		997
617	/* coro_run is the alternative tail of transfer(), so unlock here. */	998	/* cctx_run is the alternative tail of transfer(), so unlock here. */
618	UNLOCK;	999	UNLOCK;
619		1000
620	/*	1001	/* we now skip the entersub that lead to transfer() */
621	* this is a _very_ stripped down perl interpreter ;)	1002	PL_op = PL_op->op_next;
622	*/
623	PL_top_env = &PL_start_env;
624		1003
625	/* inject call to cctx_init */	1004	/* inject a fake subroutine call to cctx_init */
626	prepare_cctx (aTHX_ (coro_cctx *)arg);	1005	cctx_prepare (aTHX_ (coro_cctx *)arg);
627		1006
628	/* somebody will hit me for both perl_run and PL_restartop */	1007	/* somebody or something will hit me for both perl_run and PL_restartop */
629	PL_restartop = PL_op;	1008	PL_restartop = PL_op;
630	perl_run (PL_curinterp);	1009	perl_run (PL_curinterp);
631		1010
632	fputs ("FATAL: C coroutine fell over the edge of the world, aborting. Did you call exit in a coroutine?\n", stderr);	1011	/*
633	abort ();	1012	* If perl-run returns we assume exit() was being called or the coro
		1013	* fell off the end, which seems to be the only valid (non-bug)
		1014	* reason for perl_run to return. We try to exit by jumping to the
		1015	* bootstrap-time "top" top_env, as we cannot restore the "main"
		1016	* coroutine as Coro has no such concept
		1017	*/
		1018	PL_top_env = main_top_env;
		1019	JMPENV_JUMP (2); /* I do not feel well about the hardcoded 2 at all */
634	}	1020	}
635		1021
636	static coro_cctx *	1022	static coro_cctx *
637	cctx_new ()	1023	cctx_new ()
638	{	1024	{
…		…
643	++cctx_count;	1029	++cctx_count;
644		1030
645	Newz (0, cctx, 1, coro_cctx);	1031	Newz (0, cctx, 1, coro_cctx);
646		1032
647	#if HAVE_MMAP	1033	#if HAVE_MMAP
648
649	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;
650	/* mmap supposedly does allocate-on-write for us */	1035	/* mmap supposedly does allocate-on-write for us */
651	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);
652		1037
653	if (cctx->sptr != (void *)-1)	1038	if (cctx->sptr != (void *)-1)
…		…
655	# if CORO_STACKGUARD	1040	# if CORO_STACKGUARD
656	mprotect (cctx->sptr, CORO_STACKGUARD * PAGESIZE, PROT_NONE);	1041	mprotect (cctx->sptr, CORO_STACKGUARD * PAGESIZE, PROT_NONE);
657	# endif	1042	# endif
658	stack_start = CORO_STACKGUARD * PAGESIZE + (char *)cctx->sptr;	1043	stack_start = CORO_STACKGUARD * PAGESIZE + (char *)cctx->sptr;
659	stack_size = cctx->ssize - CORO_STACKGUARD * PAGESIZE;	1044	stack_size = cctx->ssize - CORO_STACKGUARD * PAGESIZE;
660	cctx->mapped = 1;	1045	cctx->flags |= CC_MAPPED;
661	}	1046	}
662	else	1047	else
663	#endif	1048	#endif
664	{	1049	{
665	cctx->ssize = coro_stacksize * (long)sizeof (long);	1050	cctx->ssize = coro_stacksize * (long)sizeof (long);
…		…
674	stack_start = cctx->sptr;	1059	stack_start = cctx->sptr;
675	stack_size = cctx->ssize;	1060	stack_size = cctx->ssize;
676	}	1061	}
677		1062
678	REGISTER_STACK (cctx, (char *)stack_start, (char *)stack_start + stack_size);	1063	REGISTER_STACK (cctx, (char *)stack_start, (char *)stack_start + stack_size);
679	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);
680		1065
681	return cctx;	1066	return cctx;
682	}	1067	}
683		1068
684	static void	1069	static void
…		…
692	#if CORO_USE_VALGRIND	1077	#if CORO_USE_VALGRIND
693	VALGRIND_STACK_DEREGISTER (cctx->valgrind_id);	1078	VALGRIND_STACK_DEREGISTER (cctx->valgrind_id);
694	#endif	1079	#endif
695		1080
696	#if HAVE_MMAP	1081	#if HAVE_MMAP
697	if (cctx->mapped)	1082	if (cctx->flags & CC_MAPPED)
698	munmap (cctx->sptr, cctx->ssize);	1083	munmap (cctx->sptr, cctx->ssize);
699	else	1084	else
700	#endif	1085	#endif
701	Safefree (cctx->sptr);	1086	Safefree (cctx->sptr);
702		1087
703	Safefree (cctx);	1088	Safefree (cctx);
704	}	1089	}
705		1090
		1091	/* wether this cctx should be destructed */
		1092	#define CCTX_EXPIRED(cctx) ((cctx)->ssize < coro_stacksize || ((cctx)->flags & CC_NOREUSE))
		1093
706	static coro_cctx *	1094	static coro_cctx *
707	cctx_get (pTHX)	1095	cctx_get (pTHX)
708	{	1096	{
709	while (cctx_first)	1097	while (expect_true (cctx_first))
710	{	1098	{
711	coro_cctx *cctx = cctx_first;	1099	coro_cctx *cctx = cctx_first;
712	cctx_first = cctx->next;	1100	cctx_first = cctx->next;
713	--cctx_idle;	1101	--cctx_idle;
714		1102
715	if (cctx->ssize >= coro_stacksize)	1103	if (expect_true (!CCTX_EXPIRED (cctx)))
716	return cctx;	1104	return cctx;
717		1105
718	cctx_destroy (cctx);	1106	cctx_destroy (cctx);
719	}	1107	}
720		1108
721	PL_op = PL_op->op_next;
722	return cctx_new ();	1109	return cctx_new ();
723	}	1110	}
724		1111
725	static void	1112	static void
726	cctx_put (coro_cctx *cctx)	1113	cctx_put (coro_cctx *cctx)
727	{	1114	{
728	/* free another cctx if overlimit */	1115	/* free another cctx if overlimit */
729	if (cctx_idle >= MAX_IDLE_CCTX)	1116	if (expect_false (cctx_idle >= MAX_IDLE_CCTX))
730	{	1117	{
731	coro_cctx *first = cctx_first;	1118	coro_cctx *first = cctx_first;
732	cctx_first = first->next;	1119	cctx_first = first->next;
733	--cctx_idle;	1120	--cctx_idle;
734		1121
735	assert (!first->inuse);
736	cctx_destroy (first);	1122	cctx_destroy (first);
737	}	1123	}
738		1124
739	++cctx_idle;	1125	++cctx_idle;
740	cctx->next = cctx_first;	1126	cctx->next = cctx_first;
741	cctx_first = cctx;	1127	cctx_first = cctx;
742	}	1128	}
743		1129
744	/** coroutine switching *****************************************************/	1130	/** coroutine switching *****************************************************/
745		1131
746	/* 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 */
747	static void NOINLINE	1154	static void NOINLINE
748	transfer (pTHX_ struct coro *prev, struct coro *next)	1155	transfer (pTHX_ struct coro *prev, struct coro *next, int force_cctx)
749	{	1156	{
750	dSTACKLEVEL;	1157	dSTACKLEVEL;
		1158	static volatile int has_throw;
751		1159
752	/* sometimes transfer is only called to set idle_sp */	1160	/* sometimes transfer is only called to set idle_sp */
753	if (!next)	1161	if (expect_false (!next))
754	{	1162	{
755	((coro_cctx *)prev)->idle_sp = STACKLEVEL;	1163	((coro_cctx *)prev)->idle_sp = STACKLEVEL;
756	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 */
757	}	1165	}
758	else if (prev != next)	1166	else if (expect_true (prev != next))
759	{	1167	{
760	coro_cctx *prev__cctx;	1168	coro_cctx *prev__cctx;
761		1169
762	if (prev->flags & CF_NEW)	1170	if (expect_false (prev->flags & CF_NEW))
763	{	1171	{
764	/* create a new empty context */	1172	/* create a new empty context */
765	Newz (0, prev->cctx, 1, coro_cctx);	1173	Newz (0, prev->cctx, 1, coro_cctx);
766	prev->cctx->inuse = 1;
767	prev->flags &= ~CF_NEW;	1174	prev->flags &= ~CF_NEW;
768	prev->flags |= CF_RUNNING;	1175	prev->flags |= CF_RUNNING;
769	}	1176	}
770		1177
771	/*TODO: must not croak here */
772	if (!prev->flags & CF_RUNNING)
773	croak ("Coro::State::transfer called with non-running prev Coro::State, but can only transfer from running states");
774
775	if (next->flags & CF_RUNNING)
776	croak ("Coro::State::transfer called with running next Coro::State, but can only transfer to inactive states");
777
778	if (next->flags & CF_DESTROYED)
779	croak ("Coro::State::transfer called with destroyed next Coro::State, but can only transfer to inactive states");
780
781	prev->flags &= ~CF_RUNNING;	1178	prev->flags &= ~CF_RUNNING;
782	next->flags |= CF_RUNNING;	1179	next->flags |= CF_RUNNING;
783		1180
784	LOCK;	1181	LOCK;
785		1182
		1183	/* first get rid of the old state */
		1184	save_perl (aTHX_ prev);
		1185
786	if (next->flags & CF_NEW)	1186	if (expect_false (next->flags & CF_NEW))
787	{	1187	{
788	/* need to start coroutine */	1188	/* need to start coroutine */
789	next->flags &= ~CF_NEW;	1189	next->flags &= ~CF_NEW;
790	/* first get rid of the old state */
791	save_perl (aTHX_ prev);
792	/* setup coroutine call */	1190	/* setup coroutine call */
793	setup_coro (aTHX_ next);	1191	coro_setup (aTHX_ next);
794	/* need a new stack */
795	assert (!next->cctx);
796	}	1192	}
797	else	1193	else
798	{
799	/* coroutine already started */
800	save_perl (aTHX_ prev);
801	load_perl (aTHX_ next);	1194	load_perl (aTHX_ next);
802	}
803		1195
804	prev__cctx = prev->cctx;	1196	prev__cctx = prev->cctx;
805		1197
806	/* possibly "free" the cctx */	1198	/* possibly "free" the cctx */
		1199	if (expect_true (
807	if (prev__cctx->idle_sp == STACKLEVEL)	1200	prev__cctx->idle_sp == STACKLEVEL
		1201	&& !(prev__cctx->flags & CC_TRACE)
		1202	&& !force_cctx
		1203	))
808	{	1204	{
809	/* 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 */
810	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));
811		1207
812	prev->cctx = 0;	1208	prev->cctx = 0;
813		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
814	cctx_put (prev__cctx);	1216	cctx_put (prev__cctx);
815	prev__cctx->inuse = 0;
816	}	1217	}
817		1218
		1219	++next->usecount;
		1220
818	if (!next->cctx)	1221	if (expect_true (!next->cctx))
819	{
820	next->cctx = cctx_get (aTHX);	1222	next->cctx = cctx_get (aTHX);
821	assert (!next->cctx->inuse);
822	next->cctx->inuse = 1;
823	}
824		1223
		1224	has_throw = !!next->throw;
		1225
825	if (prev__cctx != next->cctx)	1226	if (expect_false (prev__cctx != next->cctx))
826	{	1227	{
827	prev__cctx->top_env = PL_top_env;	1228	prev__cctx->top_env = PL_top_env;
828	PL_top_env = next->cctx->top_env;	1229	PL_top_env = next->cctx->top_env;
829	coro_transfer (&prev__cctx->cctx, &next->cctx->cctx);	1230	coro_transfer (&prev__cctx->cctx, &next->cctx->cctx);
830	}	1231	}
831		1232
832	free_coro_mortal (aTHX);	1233	free_coro_mortal (aTHX);
833	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	}
834	}	1248	}
835	}	1249	}
836		1250
837	struct transfer_args	1251	struct transfer_args
838	{	1252	{
839	struct coro *prev, *next;	1253	struct coro *prev, *next;
840	};	1254	};
841		1255
		1256	#define TRANSFER(ta, force_cctx) transfer (aTHX_ (ta).prev, (ta).next, (force_cctx))
842	#define TRANSFER(ta) transfer (aTHX_ (ta).prev, (ta).next)	1257	#define TRANSFER_CHECK(ta) transfer_check (aTHX_ (ta).prev, (ta).next)
843		1258
844	/** high level stuff ********************************************************/	1259	/** high level stuff ********************************************************/
845		1260
846	static int	1261	static int
847	coro_state_destroy (pTHX_ struct coro *coro)	1262	coro_state_destroy (pTHX_ struct coro *coro)
…		…
864		1279
865	if (coro->mainstack && coro->mainstack != main_mainstack)	1280	if (coro->mainstack && coro->mainstack != main_mainstack)
866	{	1281	{
867	struct coro temp;	1282	struct coro temp;
868		1283
869	assert (!(coro->flags & CF_RUNNING));
870
871	Zero (&temp, 1, struct coro);
872	temp.save = CORO_SAVE_DEF;
873
874	if (coro->flags & CF_RUNNING)	1284	if (coro->flags & CF_RUNNING)
875	croak ("FATAL: tried to destroy currently running coroutine");	1285	croak ("FATAL: tried to destroy currently running coroutine");
876		1286
877	save_perl (aTHX_ &temp);	1287	save_perl (aTHX_ &temp);
878	load_perl (aTHX_ coro);	1288	load_perl (aTHX_ coro);
879		1289
880	coro_destroy_stacks (aTHX);	1290	coro_destroy (aTHX_ coro);
881		1291
882	load_perl (aTHX_ &temp); /* this will get rid of defsv etc.. */	1292	load_perl (aTHX_ &temp);
883		1293
884	coro->mainstack = 0;	1294	coro->slot = 0;
885	}	1295	}
886		1296
887	cctx_destroy (coro->cctx);	1297	cctx_destroy (coro->cctx);
888	SvREFCNT_dec (coro->args);	1298	SvREFCNT_dec (coro->args);
889		1299
		1300	if (coro->next) coro->next->prev = coro->prev;
		1301	if (coro->prev) coro->prev->next = coro->next;
		1302	if (coro == coro_first) coro_first = coro->next;
		1303
890	return 1;	1304	return 1;
891	}	1305	}
892		1306
893	static int	1307	static int
894	coro_state_free (pTHX_ SV *sv, MAGIC *mg)	1308	coro_state_free (pTHX_ SV *sv, MAGIC *mg)
895	{	1309	{
896	struct coro *coro = (struct coro *)mg->mg_ptr;	1310	struct coro *coro = (struct coro *)mg->mg_ptr;
897	mg->mg_ptr = 0;	1311	mg->mg_ptr = 0;
		1312
		1313	coro->hv = 0;
898		1314
899	if (--coro->refcnt < 0)	1315	if (--coro->refcnt < 0)
900	{	1316	{
901	coro_state_destroy (aTHX_ coro);	1317	coro_state_destroy (aTHX_ coro);
902	Safefree (coro);	1318	Safefree (coro);
…		…
924	#else	1340	#else
925	# define MGf_DUP 0	1341	# define MGf_DUP 0
926	#endif	1342	#endif
927	};	1343	};
928		1344
929	static struct coro *
930	SvSTATE_ (pTHX_ SV *coro)
931	{
932	HV *stash;
933	MAGIC *mg;
934
935	if (SvROK (coro))
936	coro = SvRV (coro);
937
938	stash = SvSTASH (coro);
939	if (stash != coro_stash && stash != coro_state_stash)
940	{
941	/* very slow, but rare, check */
942	if (!sv_derived_from (sv_2mortal (newRV_inc (coro)), "Coro::State"))
943	croak ("Coro::State object required");
944	}
945
946	mg = CORO_MAGIC (coro);
947	return (struct coro *)mg->mg_ptr;
948	}
949
950	#define SvSTATE(sv) SvSTATE_ (aTHX_ (sv))
951
952	static void	1345	static void
953	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)
954	{	1347	{
955	ta->prev = SvSTATE (prev_sv);	1348	ta->prev = SvSTATE (prev_sv);
956	ta->next = SvSTATE (next_sv);	1349	ta->next = SvSTATE (next_sv);
		1350	TRANSFER_CHECK (*ta);
957	}	1351	}
958		1352
959	static void	1353	static void
960	api_transfer (SV *prev_sv, SV *next_sv)	1354	api_transfer (SV *prev_sv, SV *next_sv)
961	{	1355	{
962	dTHX;	1356	dTHX;
963	struct transfer_args ta;	1357	struct transfer_args ta;
964		1358
965	prepare_transfer (aTHX_ &ta, prev_sv, next_sv);	1359	prepare_transfer (aTHX_ &ta, prev_sv, next_sv);
966	TRANSFER (ta);	1360	TRANSFER (ta, 1);
967	}
968
969	static int
970	api_save (SV *coro_sv, int new_save)
971	{
972	dTHX;
973	struct coro *coro = SvSTATE (coro_sv);
974	int old_save = coro->save;
975
976	if (new_save >= 0)
977	coro->save = new_save;
978
979	return old_save;
980	}	1361	}
981		1362
982	/** Coro ********************************************************************/	1363	/** Coro ********************************************************************/
983		1364
984	static void	1365	static void
…		…
986	{	1367	{
987	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);
988	}	1369	}
989		1370
990	static SV *	1371	static SV *
991	coro_deq (pTHX_ int min_prio)	1372	coro_deq (pTHX)
992	{	1373	{
993	int prio = PRIO_MAX - PRIO_MIN;	1374	int prio;
994		1375
995	min_prio -= PRIO_MIN;
996	if (min_prio < 0)
997	min_prio = 0;
998
999	for (prio = PRIO_MAX - PRIO_MIN + 1; --prio >= min_prio; )	1376	for (prio = PRIO_MAX - PRIO_MIN + 1; --prio >= 0; )
1000	if (AvFILLp (coro_ready [prio]) >= 0)	1377	if (AvFILLp (coro_ready [prio]) >= 0)
1001	return av_shift (coro_ready [prio]);	1378	return av_shift (coro_ready [prio]);
1002		1379
1003	return 0;	1380	return 0;
1004	}	1381	}
…		…
1006	static int	1383	static int
1007	api_ready (SV *coro_sv)	1384	api_ready (SV *coro_sv)
1008	{	1385	{
1009	dTHX;	1386	dTHX;
1010	struct coro *coro;	1387	struct coro *coro;
		1388	SV *hook;
1011		1389
1012	if (SvROK (coro_sv))	1390	if (SvROK (coro_sv))
1013	coro_sv = SvRV (coro_sv);	1391	coro_sv = SvRV (coro_sv);
1014		1392
1015	coro = SvSTATE (coro_sv);	1393	coro = SvSTATE (coro_sv);
…		…
1018	return 0;	1396	return 0;
1019		1397
1020	coro->flags |= CF_READY;	1398	coro->flags |= CF_READY;
1021		1399
1022	LOCK;	1400	LOCK;
		1401
		1402	hook = coro_nready ? 0 : coro_readyhook;
		1403
1023	coro_enq (aTHX_ SvREFCNT_inc (coro_sv));	1404	coro_enq (aTHX_ SvREFCNT_inc (coro_sv));
1024	++coro_nready;	1405	++coro_nready;
		1406
1025	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	}
1026		1424
1027	return 1;	1425	return 1;
1028	}	1426	}
1029		1427
1030	static int	1428	static int
…		…
1040	SV *prev_sv, *next_sv;	1438	SV *prev_sv, *next_sv;
1041		1439
1042	for (;;)	1440	for (;;)
1043	{	1441	{
1044	LOCK;	1442	LOCK;
1045	next_sv = coro_deq (aTHX_ PRIO_MIN);	1443	next_sv = coro_deq (aTHX);
1046		1444
1047	/* nothing to schedule: call the idle handler */	1445	/* nothing to schedule: call the idle handler */
1048	if (!next_sv)	1446	if (expect_false (!next_sv))
1049	{	1447	{
1050	dSP;	1448	dSP;
1051	UNLOCK;	1449	UNLOCK;
1052		1450
1053	ENTER;	1451	ENTER;
1054	SAVETMPS;	1452	SAVETMPS;
1055		1453
1056	PUSHMARK (SP);	1454	PUSHMARK (SP);
1057	PUTBACK;	1455	PUTBACK;
1058	call_sv (get_sv ("Coro::idle", FALSE), G_DISCARD);	1456	call_sv (get_sv ("Coro::idle", FALSE), G_DISCARD);
		1457	SPAGAIN;
1059		1458
1060	FREETMPS;	1459	FREETMPS;
1061	LEAVE;	1460	LEAVE;
1062	continue;	1461	continue;
1063	}	1462	}
1064		1463
1065	ta->next = SvSTATE (next_sv);	1464	ta->next = SvSTATE (next_sv);
1066		1465
1067	/* cannot transfer to destroyed coros, skip and look for next */	1466	/* cannot transfer to destroyed coros, skip and look for next */
1068	if (ta->next->flags & CF_DESTROYED)	1467	if (expect_false (ta->next->flags & CF_DESTROYED))
1069	{	1468	{
1070	UNLOCK;	1469	UNLOCK;
1071	SvREFCNT_dec (next_sv);	1470	SvREFCNT_dec (next_sv);
1072	/* coro_nready is already taken care of by destroy */	1471	/* coro_nready is already taken care of by destroy */
1073	continue;	1472	continue;
…		…
1078	break;	1477	break;
1079	}	1478	}
1080		1479
1081	/* free this only after the transfer */	1480	/* free this only after the transfer */
1082	prev_sv = SvRV (coro_current);	1481	prev_sv = SvRV (coro_current);
1083	SvRV_set (coro_current, next_sv);
1084	ta->prev = SvSTATE (prev_sv);	1482	ta->prev = SvSTATE (prev_sv);
1085		1483	TRANSFER_CHECK (*ta);
1086	assert (ta->next->flags & CF_READY);	1484	assert (ta->next->flags & CF_READY);
1087	ta->next->flags &= ~CF_READY;	1485	ta->next->flags &= ~CF_READY;
		1486	SvRV_set (coro_current, next_sv);
1088		1487
1089	LOCK;	1488	LOCK;
1090	free_coro_mortal (aTHX);	1489	free_coro_mortal (aTHX);
1091	coro_mortal = prev_sv;	1490	coro_mortal = prev_sv;
1092	UNLOCK;	1491	UNLOCK;
…		…
1118	{	1517	{
1119	dTHX;	1518	dTHX;
1120	struct transfer_args ta;	1519	struct transfer_args ta;
1121		1520
1122	prepare_schedule (aTHX_ &ta);	1521	prepare_schedule (aTHX_ &ta);
1123	TRANSFER (ta);	1522	TRANSFER (ta, 1);
1124	}	1523	}
1125		1524
1126	static int	1525	static int
1127	api_cede (void)	1526	api_cede (void)
1128	{	1527	{
1129	dTHX;	1528	dTHX;
1130	struct transfer_args ta;	1529	struct transfer_args ta;
1131		1530
1132	prepare_cede (aTHX_ &ta);	1531	prepare_cede (aTHX_ &ta);
1133		1532
1134	if (ta.prev != ta.next)	1533	if (expect_true (ta.prev != ta.next))
1135	{	1534	{
1136	TRANSFER (ta);	1535	TRANSFER (ta, 1);
1137	return 1;	1536	return 1;
1138	}	1537	}
1139	else	1538	else
1140	return 0;	1539	return 0;
1141	}	1540	}
…		…
1146	dTHX;	1545	dTHX;
1147	struct transfer_args ta;	1546	struct transfer_args ta;
1148		1547
1149	if (prepare_cede_notself (aTHX_ &ta))	1548	if (prepare_cede_notself (aTHX_ &ta))
1150	{	1549	{
1151	TRANSFER (ta);	1550	TRANSFER (ta, 1);
1152	return 1;	1551	return 1;
1153	}	1552	}
1154	else	1553	else
1155	return 0;	1554	return 0;
1156	}	1555	}
1157		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
1158	MODULE = Coro::State PACKAGE = Coro::State	1583	MODULE = Coro::State PACKAGE = Coro::State PREFIX = api_
1159		1584
1160	PROTOTYPES: DISABLE	1585	PROTOTYPES: DISABLE
1161		1586
1162	BOOT:	1587	BOOT:
1163	{	1588	{
1164	#ifdef USE_ITHREADS	1589	#ifdef USE_ITHREADS
1165	MUTEX_INIT (&coro_mutex);	1590	MUTEX_INIT (&coro_mutex);
1166	#endif	1591	#endif
1167	BOOT_PAGESIZE;	1592	BOOT_PAGESIZE;
1168		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));
		1605
1169	coro_state_stash = gv_stashpv ("Coro::State", TRUE);	1606	coro_state_stash = gv_stashpv ("Coro::State", TRUE);
1170		1607
1171	newCONSTSUB (coro_state_stash, "SAVE_DEFAV", newSViv (CORO_SAVE_DEFAV));	1608	newCONSTSUB (coro_state_stash, "CC_TRACE" , newSViv (CC_TRACE));
1172	newCONSTSUB (coro_state_stash, "SAVE_DEFSV", newSViv (CORO_SAVE_DEFSV));	1609	newCONSTSUB (coro_state_stash, "CC_TRACE_SUB" , newSViv (CC_TRACE_SUB));
1173	newCONSTSUB (coro_state_stash, "SAVE_ERRSV", newSViv (CORO_SAVE_ERRSV));
1174	newCONSTSUB (coro_state_stash, "SAVE_IRSSV", newSViv (CORO_SAVE_IRSSV));
1175	newCONSTSUB (coro_state_stash, "SAVE_DEFFH", newSViv (CORO_SAVE_DEFFH));
1176	newCONSTSUB (coro_state_stash, "SAVE_DEF", newSViv (CORO_SAVE_DEF));	1610	newCONSTSUB (coro_state_stash, "CC_TRACE_LINE", newSViv (CC_TRACE_LINE));
1177	newCONSTSUB (coro_state_stash, "SAVE_ALL", newSViv (CORO_SAVE_ALL));	1611	newCONSTSUB (coro_state_stash, "CC_TRACE_ALL" , newSViv (CC_TRACE_ALL));
1178		1612
1179	main_mainstack = PL_mainstack;	1613	main_mainstack = PL_mainstack;
		1614	main_top_env = PL_top_env;
		1615
		1616	while (main_top_env->je_prev)
		1617	main_top_env = main_top_env->je_prev;
1180		1618
1181	coroapi.ver = CORO_API_VERSION;	1619	coroapi.ver = CORO_API_VERSION;
		1620	coroapi.rev = CORO_API_REVISION;
1182	coroapi.transfer = api_transfer;	1621	coroapi.transfer = api_transfer;
1183		1622
1184	assert (("PRIO_NORMAL must be 0", !PRIO_NORMAL));	1623	assert (("PRIO_NORMAL must be 0", !PRIO_NORMAL));
1185	}	1624	}
1186		1625
1187	SV *	1626	SV *
1188	new (char *klass, ...)	1627	new (char *klass, ...)
1189	CODE:	1628	CODE:
1190	{	1629	{
1191	struct coro *coro;	1630	struct coro *coro;
		1631	MAGIC *mg;
1192	HV *hv;	1632	HV *hv;
1193	int i;	1633	int i;
1194		1634
1195	Newz (0, coro, 1, struct coro);	1635	Newz (0, coro, 1, struct coro);
1196	coro->args = newAV ();	1636	coro->args = newAV ();
1197	coro->save = CORO_SAVE_DEF;
1198	coro->flags = CF_NEW;	1637	coro->flags = CF_NEW;
1199		1638
		1639	if (coro_first) coro_first->prev = coro;
		1640	coro->next = coro_first;
		1641	coro_first = coro;
		1642
1200	hv = newHV ();	1643	coro->hv = hv = newHV ();
1201	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;
1202	RETVAL = sv_bless (newRV_noinc ((SV *)hv), gv_stashpv (klass, 1));	1646	RETVAL = sv_bless (newRV_noinc ((SV *)hv), gv_stashpv (klass, 1));
1203		1647
		1648	av_extend (coro->args, items - 1);
1204	for (i = 1; i < items; i++)	1649	for (i = 1; i < items; i++)
1205	av_push (coro->args, newSVsv (ST (i)));	1650	av_push (coro->args, newSVsv (ST (i)));
1206	}	1651	}
1207	OUTPUT:	1652	OUTPUT:
1208	RETVAL	1653	RETVAL
1209		1654
1210	int	1655	# these not obviously related functions are all rolled into the same xs
1211	save (SV *coro, int new_save = -1)	1656	# function to increase chances that they all will call transfer with the same
1212	CODE:	1657	# stack offset
1213	RETVAL = api_save (coro, new_save);
1214	OUTPUT:
1215	RETVAL
1216
1217	int
1218	save_also (SV *coro_sv, int save_also)
1219	CODE:
1220	{
1221	struct coro *coro = SvSTATE (coro_sv);
1222	RETVAL = coro->save;
1223	coro->save |= save_also;
1224	}
1225	OUTPUT:
1226	RETVAL
1227
1228	void	1658	void
1229	_set_stacklevel (...)	1659	_set_stacklevel (...)
1230	ALIAS:	1660	ALIAS:
1231	Coro::State::transfer = 1	1661	Coro::State::transfer = 1
1232	Coro::schedule = 2	1662	Coro::schedule = 2
…		…
1234	Coro::cede_notself = 4	1664	Coro::cede_notself = 4
1235	CODE:	1665	CODE:
1236	{	1666	{
1237	struct transfer_args ta;	1667	struct transfer_args ta;
1238		1668
		1669	PUTBACK;
1239	switch (ix)	1670	switch (ix)
1240	{	1671	{
1241	case 0:	1672	case 0:
1242	ta.prev = (struct coro *)INT2PTR (coro_cctx *, SvIV (ST (0)));	1673	ta.prev = (struct coro *)INT2PTR (coro_cctx *, SvIV (ST (0)));
1243	ta.next = 0;	1674	ta.next = 0;
…		…
1262	if (!prepare_cede_notself (aTHX_ &ta))	1693	if (!prepare_cede_notself (aTHX_ &ta))
1263	XSRETURN_EMPTY;	1694	XSRETURN_EMPTY;
1264		1695
1265	break;	1696	break;
1266	}	1697	}
		1698	SPAGAIN;
1267		1699
1268	BARRIER;	1700	BARRIER;
		1701	PUTBACK;
1269	TRANSFER (ta);	1702	TRANSFER (ta, 0);
1270		1703	SPAGAIN; /* might be the sp of a different coroutine now */
1271	if (GIMME_V != G_VOID && ta.next != ta.prev)	1704	/* be extra careful not to ever do anything after TRANSFER */
1272	XSRETURN_YES;
1273	}	1705	}
1274		1706
1275	bool	1707	bool
1276	_destroy (SV *coro_sv)	1708	_destroy (SV *coro_sv)
1277	CODE:	1709	CODE:
1278	RETVAL = coro_state_destroy (aTHX_ SvSTATE (coro_sv));	1710	RETVAL = coro_state_destroy (aTHX_ SvSTATE (coro_sv));
1279	OUTPUT:	1711	OUTPUT:
1280	RETVAL	1712	RETVAL
1281		1713
1282	void	1714	void
1283	_exit (code)	1715	_exit (int code)
1284	int code
1285	PROTOTYPE: $	1716	PROTOTYPE: $
1286	CODE:	1717	CODE:
1287	_exit (code);	1718	_exit (code);
1288		1719
1289	int	1720	int
…		…
1307	CODE:	1738	CODE:
1308	RETVAL = cctx_idle;	1739	RETVAL = cctx_idle;
1309	OUTPUT:	1740	OUTPUT:
1310	RETVAL	1741	RETVAL
1311		1742
		1743	void
		1744	list ()
		1745	PPCODE:
		1746	{
		1747	struct coro *coro;
		1748	for (coro = coro_first; coro; coro = coro->next)
		1749	if (coro->hv)
		1750	XPUSHs (sv_2mortal (newRV_inc ((SV *)coro->hv)));
		1751	}
		1752
		1753	void
		1754	call (Coro::State coro, SV *coderef)
		1755	ALIAS:
		1756	eval = 1
		1757	CODE:
		1758	{
		1759	if (coro->mainstack)
		1760	{
		1761	struct coro temp;
		1762
		1763	if (!(coro->flags & CF_RUNNING))
		1764	{
		1765	PUTBACK;
		1766	save_perl (aTHX_ &temp);
		1767	load_perl (aTHX_ coro);
		1768	}
		1769
		1770	{
		1771	dSP;
		1772	ENTER;
		1773	SAVETMPS;
		1774	PUTBACK;
		1775	PUSHSTACK;
		1776	PUSHMARK (SP);
		1777
		1778	if (ix)
		1779	eval_sv (coderef, 0);
		1780	else
		1781	call_sv (coderef, G_KEEPERR | G_EVAL | G_VOID | G_DISCARD);
		1782
		1783	POPSTACK;
		1784	SPAGAIN;
		1785	FREETMPS;
		1786	LEAVE;
		1787	PUTBACK;
		1788	}
		1789
		1790	if (!(coro->flags & CF_RUNNING))
		1791	{
		1792	save_perl (aTHX_ coro);
		1793	load_perl (aTHX_ &temp);
		1794	SPAGAIN;
		1795	}
		1796	}
		1797	}
		1798
		1799	SV *
		1800	is_ready (Coro::State coro)
		1801	PROTOTYPE: $
		1802	ALIAS:
		1803	is_ready = CF_READY
		1804	is_running = CF_RUNNING
		1805	is_new = CF_NEW
		1806	is_destroyed = CF_DESTROYED
		1807	CODE:
		1808	RETVAL = boolSV (coro->flags & ix);
		1809	OUTPUT:
		1810	RETVAL
		1811
		1812	void
		1813	api_trace (SV *coro, int flags = CC_TRACE | CC_TRACE_SUB)
		1814
		1815	SV *
		1816	has_cctx (Coro::State coro)
		1817	PROTOTYPE: $
		1818	CODE:
		1819	RETVAL = boolSV (!!coro->cctx);
		1820	OUTPUT:
		1821	RETVAL
		1822
		1823	int
		1824	is_traced (Coro::State coro)
		1825	PROTOTYPE: $
		1826	CODE:
		1827	RETVAL = (coro->cctx ? coro->cctx->flags : 0) & CC_TRACE_ALL;
		1828	OUTPUT:
		1829	RETVAL
		1830
		1831	IV
		1832	rss (Coro::State coro)
		1833	PROTOTYPE: $
		1834	ALIAS:
		1835	usecount = 1
		1836	CODE:
		1837	switch (ix)
		1838	{
		1839	case 0: RETVAL = coro_rss (aTHX_ coro); break;
		1840	case 1: RETVAL = coro->usecount; break;
		1841	}
		1842	OUTPUT:
		1843	RETVAL
		1844
		1845	void
		1846	force_cctx ()
		1847	CODE:
		1848	struct coro *coro = SvSTATE (coro_current);
		1849	coro->cctx->idle_sp = 0;
		1850
1312	MODULE = Coro::State PACKAGE = Coro	1851	MODULE = Coro::State PACKAGE = Coro
1313		1852
1314	BOOT:	1853	BOOT:
1315	{	1854	{
1316	int i;	1855	int i;
1317		1856
		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);
		1860
		1861	coro_current = coro_get_sv (aTHX_ "Coro::current", FALSE);
		1862	SvREADONLY_on (coro_current);
		1863
1318	coro_stash = gv_stashpv ("Coro", TRUE);	1864	coro_stash = gv_stashpv ("Coro", TRUE);
1319		1865
1320	newCONSTSUB (coro_stash, "PRIO_MAX", newSViv (PRIO_MAX));	1866	newCONSTSUB (coro_stash, "PRIO_MAX", newSViv (PRIO_MAX));
1321	newCONSTSUB (coro_stash, "PRIO_HIGH", newSViv (PRIO_HIGH));	1867	newCONSTSUB (coro_stash, "PRIO_HIGH", newSViv (PRIO_HIGH));
1322	newCONSTSUB (coro_stash, "PRIO_NORMAL", newSViv (PRIO_NORMAL));	1868	newCONSTSUB (coro_stash, "PRIO_NORMAL", newSViv (PRIO_NORMAL));
1323	newCONSTSUB (coro_stash, "PRIO_LOW", newSViv (PRIO_LOW));	1869	newCONSTSUB (coro_stash, "PRIO_LOW", newSViv (PRIO_LOW));
1324	newCONSTSUB (coro_stash, "PRIO_IDLE", newSViv (PRIO_IDLE));	1870	newCONSTSUB (coro_stash, "PRIO_IDLE", newSViv (PRIO_IDLE));
1325	newCONSTSUB (coro_stash, "PRIO_MIN", newSViv (PRIO_MIN));	1871	newCONSTSUB (coro_stash, "PRIO_MIN", newSViv (PRIO_MIN));
1326		1872
1327	coro_current = get_sv ("Coro::current", FALSE);
1328	SvREADONLY_on (coro_current);
1329
1330	for (i = PRIO_MAX - PRIO_MIN + 1; i--; )	1873	for (i = PRIO_MAX - PRIO_MIN + 1; i--; )
1331	coro_ready[i] = newAV ();	1874	coro_ready[i] = newAV ();
1332		1875
1333	{	1876	{
1334	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 */
1335		1879
1336	coroapi.schedule = api_schedule;	1880	coroapi.schedule = api_schedule;
1337	coroapi.save = api_save;
1338	coroapi.cede = api_cede;	1881	coroapi.cede = api_cede;
1339	coroapi.cede_notself = api_cede_notself;	1882	coroapi.cede_notself = api_cede_notself;
1340	coroapi.ready = api_ready;	1883	coroapi.ready = api_ready;
1341	coroapi.is_ready = api_is_ready;	1884	coroapi.is_ready = api_is_ready;
1342	coroapi.nready = &coro_nready;	1885	coroapi.nready = &coro_nready;
…		…
1352	_set_current (SV *current)	1895	_set_current (SV *current)
1353	PROTOTYPE: $	1896	PROTOTYPE: $
1354	CODE:	1897	CODE:
1355	SvREFCNT_dec (SvRV (coro_current));	1898	SvREFCNT_dec (SvRV (coro_current));
1356	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;
1357		1909
1358	int	1910	int
1359	prio (Coro::State coro, int newprio = 0)	1911	prio (Coro::State coro, int newprio = 0)
1360	ALIAS:	1912	ALIAS:
1361	nice = 1	1913	nice = 1
…		…
1383	CODE:	1935	CODE:
1384	RETVAL = boolSV (api_ready (self));	1936	RETVAL = boolSV (api_ready (self));
1385	OUTPUT:	1937	OUTPUT:
1386	RETVAL	1938	RETVAL
1387		1939
1388	SV *
1389	is_ready (SV *self)
1390	PROTOTYPE: $
1391	CODE:
1392	RETVAL = boolSV (api_is_ready (self));
1393	OUTPUT:
1394	RETVAL
1395
1396	int	1940	int
1397	nready (...)	1941	nready (...)
1398	PROTOTYPE:	1942	PROTOTYPE:
1399	CODE:	1943	CODE:
1400	RETVAL = coro_nready;	1944	RETVAL = coro_nready;
1401	OUTPUT:	1945	OUTPUT:
1402	RETVAL	1946	RETVAL
1403		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
		1971	# for async_pool speedup
		1972	void
		1973	_pool_1 (SV *cb)
		1974	CODE:
		1975	{
		1976	struct coro *coro = SvSTATE (coro_current);
		1977	HV *hv = (HV *)SvRV (coro_current);
		1978	AV *defav = GvAV (PL_defgv);
		1979	SV *invoke = hv_delete (hv, "_invoke", sizeof ("_invoke") - 1, 0);
		1980	AV *invoke_av;
		1981	int i, len;
		1982
		1983	if (!invoke)
		1984	{
		1985	SvREFCNT_dec (PL_diehook); PL_diehook = 0;
		1986	croak ("\3async_pool terminate\2\n");
		1987	}
		1988
		1989	SvREFCNT_dec (coro->saved_deffh);
		1990	coro->saved_deffh = SvREFCNT_inc ((SV *)PL_defoutgv);
		1991
		1992	hv_store (hv, "desc", sizeof ("desc") - 1,
		1993	newSVpvn ("[async_pool]", sizeof ("[async_pool]") - 1), 0);
		1994
		1995	invoke_av = (AV *)SvRV (invoke);
		1996	len = av_len (invoke_av);
		1997
		1998	sv_setsv (cb, AvARRAY (invoke_av)[0]);
		1999
		2000	if (len > 0)
		2001	{
		2002	av_fill (defav, len - 1);
		2003	for (i = 0; i < len; ++i)
		2004	av_store (defav, i, SvREFCNT_inc (AvARRAY (invoke_av)[i + 1]));
		2005	}
		2006
		2007	SvREFCNT_dec (invoke);
		2008	}
		2009
		2010	void
		2011	_pool_2 (SV *cb)
		2012	CODE:
		2013	{
		2014	struct coro *coro = SvSTATE (coro_current);
		2015
		2016	sv_setsv (cb, &PL_sv_undef);
		2017
		2018	SvREFCNT_dec ((SV *)PL_defoutgv); PL_defoutgv = (GV *)coro->saved_deffh;
		2019	coro->saved_deffh = 0;
		2020
		2021	if (coro_rss (aTHX_ coro) > SvIV (sv_pool_rss)
		2022	|| av_len (av_async_pool) + 1 >= SvIV (sv_pool_size))
		2023	{
		2024	SvREFCNT_dec (PL_diehook); PL_diehook = 0;
		2025	croak ("\3async_pool terminate\2\n");
		2026	}
		2027
		2028	av_clear (GvAV (PL_defgv));
		2029	hv_store ((HV *)SvRV (coro_current), "desc", sizeof ("desc") - 1,
		2030	newSVpvn ("[async_pool idle]", sizeof ("[async_pool idle]") - 1), 0);
		2031
		2032	coro->prio = 0;
		2033
		2034	if (coro->cctx && (coro->cctx->flags & CC_TRACE))
		2035	api_trace (coro_current, 0);
		2036
		2037	av_push (av_async_pool, newSVsv (coro_current));
		2038	}
		2039
		2040
1404	MODULE = Coro::State PACKAGE = Coro::AIO	2041	MODULE = Coro::State PACKAGE = Coro::AIO
1405		2042
1406	SV *	2043	SV *
1407	_get_state ()	2044	_get_state ()
1408	CODE:	2045	CODE:
…		…
1433	PL_laststype = data->laststype;	2070	PL_laststype = data->laststype;
1434	PL_laststatval = data->laststatval;	2071	PL_laststatval = data->laststatval;
1435	PL_statcache = data->statcache;	2072	PL_statcache = data->statcache;
1436	}	2073	}
1437		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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