ViewVC Help

View File | Revision Log | Show Annotations | Download File

/cvs/Coro/Coro/State.xs

Comparing Coro/Coro/State.xs (file contents):
Revision 1.157 by root, Fri Sep 21 02:01:13 2007 UTC vs.
Revision 1.249 by root, Tue Sep 30 17:12:35 2008 UTC

1	#include "libcoro/coro.c"	1	#include "libcoro/coro.c"
2		2
3	#define PERL_NO_GET_CONTEXT	3	#define PERL_NO_GET_CONTEXT
		4	#define PERL_EXT
4		5
5	#include "EXTERN.h"	6	#include "EXTERN.h"
6	#include "perl.h"	7	#include "perl.h"
7	#include "XSUB.h"	8	#include "XSUB.h"
		9	#include "perliol.h"
8		10
9	#include "patchlevel.h"	11	#include "patchlevel.h"
10		12
11	#include <stdio.h>	13	#include <stdio.h>
12	#include <errno.h>	14	#include <errno.h>
13	#include <assert.h>	15	#include <assert.h>
		16
		17	#ifdef WIN32
		18	# undef setjmp
		19	# undef longjmp
		20	# undef _exit
		21	# define setjmp _setjmp // deep magic, don't ask
		22	#else
		23	# include <inttypes.h> /* most portable stdint.h */
		24	#endif
14		25
15	#ifdef HAVE_MMAP	26	#ifdef HAVE_MMAP
16	# include <unistd.h>	27	# include <unistd.h>
17	# include <sys/mman.h>	28	# include <sys/mman.h>
18	# ifndef MAP_ANONYMOUS	29	# ifndef MAP_ANONYMOUS
…		…
70	# ifndef IS_PADCONST	81	# ifndef IS_PADCONST
71	# define IS_PADCONST(v) 0	82	# define IS_PADCONST(v) 0
72	# endif	83	# endif
73	#endif	84	#endif
74		85
		86	/* 5.8.8 */
		87	#ifndef GV_NOTQUAL
		88	# define GV_NOTQUAL 0
		89	#endif
		90	#ifndef newSV
		91	# define newSV(l) NEWSV(0,l)
		92	#endif
		93
		94	/* 5.11 */
		95	#ifndef CxHASARGS
		96	# define CxHASARGS(cx) (cx)->blk_sub.hasargs
		97	#endif
		98
75	/* 5.8.7 */	99	/* 5.8.7 */
76	#ifndef SvRV_set	100	#ifndef SvRV_set
77	# define SvRV_set(s,v) SvRV(s) = (v)	101	# define SvRV_set(s,v) SvRV(s) = (v)
78	#endif	102	#endif
79		103
…		…
88	/* prefer perl internal functions over our own? */	112	/* prefer perl internal functions over our own? */
89	#ifndef CORO_PREFER_PERL_FUNCTIONS	113	#ifndef CORO_PREFER_PERL_FUNCTIONS
90	# define CORO_PREFER_PERL_FUNCTIONS 0	114	# define CORO_PREFER_PERL_FUNCTIONS 0
91	#endif	115	#endif
92		116
93	/* The next macro should declare a variable stacklevel that contains and approximation	117	/* 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	118	* portable way as possible. */
95	* and should be unique. */
96	#define dSTACKLEVEL int stacklevel	119	#define dSTACKLEVEL volatile char stacklevel
97	#define STACKLEVEL ((void *)&stacklevel)	120	#define STACKLEVEL ((void *)&stacklevel)
98		121
99	#define IN_DESTRUCT (PL_main_cv == Nullcv)	122	#define IN_DESTRUCT (PL_main_cv == Nullcv)
100		123
101	#if __GNUC__ >= 3	124	#if __GNUC__ >= 3
102	# define attribute(x) __attribute__(x)	125	# define attribute(x) __attribute__(x)
103	# define BARRIER __asm__ __volatile__ ("" : : : "memory")	126	# define BARRIER __asm__ __volatile__ ("" : : : "memory")
		127	# define expect(expr,value) __builtin_expect ((expr),(value))
104	#else	128	#else
105	# define attribute(x)	129	# define attribute(x)
106	# define BARRIER	130	# define BARRIER
		131	# define expect(expr,value) (expr)
107	#endif	132	#endif
		133
		134	#define expect_false(expr) expect ((expr) != 0, 0)
		135	#define expect_true(expr) expect ((expr) != 0, 1)
108		136
109	#define NOINLINE attribute ((noinline))	137	#define NOINLINE attribute ((noinline))
110		138
111	#include "CoroAPI.h"	139	#include "CoroAPI.h"
112		140
…		…
120	#endif	148	#endif
121		149
122	/* helper storage struct for Coro::AIO */	150	/* helper storage struct for Coro::AIO */
123	struct io_state	151	struct io_state
124	{	152	{
		153	AV *res;
125	int errorno;	154	int errorno;
126	I32 laststype;	155	I32 laststype;
127	int laststatval;	156	int laststatval;
128	Stat_t statcache;	157	Stat_t statcache;
129	};	158	};
130		159
		160	static double (*nvtime)(); /* so why doesn't it take void? */
		161
131	static size_t coro_stacksize = CORO_STACKSIZE;	162	static size_t coro_stacksize = CORO_STACKSIZE;
132	static struct CoroAPI coroapi;	163	static struct CoroAPI coroapi;
133	static AV *main_mainstack; /* used to differentiate between $main and others */	164	static AV *main_mainstack; /* used to differentiate between $main and others */
134	static JMPENV *main_top_env;	165	static JMPENV *main_top_env;
135	static HV *coro_state_stash, *coro_stash;	166	static HV *coro_state_stash, *coro_stash;
136	static SV *coro_mortal; /* will be freed after next transfer */	167	static volatile SV *coro_mortal; /* will be freed after next transfer */
		168
		169	static GV *irsgv; /* $/ */
		170	static GV *stdoutgv; /* *STDOUT */
		171	static SV *rv_diehook;
		172	static SV *rv_warnhook;
		173	static HV *hv_sig; /* %SIG */
		174
		175	/* async_pool helper stuff */
		176	static SV *sv_pool_rss;
		177	static SV *sv_pool_size;
		178	static AV *av_async_pool;
		179
		180	/* Coro::AnyEvent */
		181	static SV *sv_activity;
137		182
138	static struct coro_cctx *cctx_first;	183	static struct coro_cctx *cctx_first;
139	static int cctx_count, cctx_idle;	184	static int cctx_count, cctx_idle;
		185
		186	enum {
		187	CC_MAPPED = 0x01,
		188	CC_NOREUSE = 0x02, /* throw this away after tracing */
		189	CC_TRACE = 0x04,
		190	CC_TRACE_SUB = 0x08, /* trace sub calls */
		191	CC_TRACE_LINE = 0x10, /* trace each statement */
		192	CC_TRACE_ALL = CC_TRACE_SUB | CC_TRACE_LINE,
		193	};
140		194
141	/* this is a structure representing a c-level coroutine */	195	/* this is a structure representing a c-level coroutine */
142	typedef struct coro_cctx {	196	typedef struct coro_cctx {
143	struct coro_cctx *next;	197	struct coro_cctx *next;
144		198
…		…
153	coro_context cctx;	207	coro_context cctx;
154		208
155	#if CORO_USE_VALGRIND	209	#if CORO_USE_VALGRIND
156	int valgrind_id;	210	int valgrind_id;
157	#endif	211	#endif
158	char inuse, mapped;	212	unsigned char flags;
159	} coro_cctx;	213	} coro_cctx;
160		214
161	enum {	215	enum {
162	CF_RUNNING = 0x0001, /* coroutine is running */	216	CF_RUNNING = 0x0001, /* coroutine is running */
163	CF_READY = 0x0002, /* coroutine is ready */	217	CF_READY = 0x0002, /* coroutine is ready */
164	CF_NEW = 0x0004, /* has never been switched to */	218	CF_NEW = 0x0004, /* has never been switched to */
165	CF_DESTROYED = 0x0008, /* coroutine data has been freed */	219	CF_DESTROYED = 0x0008, /* coroutine data has been freed */
166	};	220	};
167		221
		222	/* the structure where most of the perl state is stored, overlaid on the cxstack */
		223	typedef struct {
		224	SV *defsv;
		225	AV *defav;
		226	SV *errsv;
		227	SV *irsgv;
		228	#define VAR(name,type) type name;
		229	# include "state.h"
		230	#undef VAR
		231	} perl_slots;
		232
		233	#define SLOT_COUNT ((sizeof (perl_slots) + sizeof (PERL_CONTEXT) - 1) / sizeof (PERL_CONTEXT))
		234
168	/* this is a structure representing a perl-level coroutine */	235	/* this is a structure representing a perl-level coroutine */
169	struct coro {	236	struct coro {
170	/* the c coroutine allocated to this perl coroutine, if any */	237	/* the c coroutine allocated to this perl coroutine, if any */
171	coro_cctx *cctx;	238	coro_cctx *cctx;
172		239
		240	/* process data */
		241	AV *mainstack;
		242	perl_slots *slot; /* basically the saved sp */
		243
173	/* data associated with this coroutine (initial args) */	244	AV *args; /* data associated with this coroutine (initial args) */
174	AV *args;	245	int refcnt; /* coroutines are refcounted, yes */
175	int refcnt;
176	int save; /* CORO_SAVE flags */
177	int flags; /* CF_ flags */	246	int flags; /* CF_ flags */
		247	HV *hv; /* the perl hash associated with this coro, if any */
178		248
179	/* optionally saved, might be zero */	249	/* statistics */
180	AV *defav; /* @_ */	250	int usecount; /* number of transfers to this coro */
181	SV *defsv; /* $_ */
182	SV *errsv; /* $@ */
183	GV *deffh; /* default filehandle */
184	SV *irssv; /* $/ */
185	SV *irssv_sv; /* real $/ cache */
186
187	#define VAR(name,type) type name;
188	# include "state.h"
189	#undef VAR
190		251
191	/* coro process data */	252	/* coro process data */
192	int prio;	253	int prio;
		254	SV *throw; /* exception to be thrown */
		255
		256	/* async_pool */
		257	SV *saved_deffh;
193		258
194	/* linked list */	259	/* linked list */
195	struct coro *next, *prev;	260	struct coro *next, *prev;
196	HV *hv; /* the perl hash associated with this coro, if any */
197	};	261	};
198		262
199	typedef struct coro *Coro__State;	263	typedef struct coro *Coro__State;
200	typedef struct coro *Coro__State_or_hashref;	264	typedef struct coro *Coro__State_or_hashref;
201		265
…		…
208	#define PRIO_IDLE -3	272	#define PRIO_IDLE -3
209	#define PRIO_MIN -4	273	#define PRIO_MIN -4
210		274
211	/* for Coro.pm */	275	/* for Coro.pm */
212	static SV *coro_current;	276	static SV *coro_current;
		277	static SV *coro_readyhook;
213	static AV *coro_ready [PRIO_MAX-PRIO_MIN+1];	278	static AV *coro_ready [PRIO_MAX-PRIO_MIN+1];
214	static int coro_nready;	279	static int coro_nready;
215	static struct coro *coro_first;	280	static struct coro *coro_first;
216		281
217	/** lowlevel stuff **********************************************************/	282	/** lowlevel stuff **********************************************************/
218		283
		284	static SV *
		285	coro_get_sv (pTHX_ const char *name, int create)
		286	{
		287	#if PERL_VERSION_ATLEAST (5,10,0)
		288	/* silence stupid and wrong 5.10 warning that I am unable to switch off */
		289	get_sv (name, create);
		290	#endif
		291	return get_sv (name, create);
		292	}
		293
		294	static AV *
		295	coro_get_av (pTHX_ const char *name, int create)
		296	{
		297	#if PERL_VERSION_ATLEAST (5,10,0)
		298	/* silence stupid and wrong 5.10 warning that I am unable to switch off */
		299	get_av (name, create);
		300	#endif
		301	return get_av (name, create);
		302	}
		303
		304	static HV *
		305	coro_get_hv (pTHX_ const char *name, int create)
		306	{
		307	#if PERL_VERSION_ATLEAST (5,10,0)
		308	/* silence stupid and wrong 5.10 warning that I am unable to switch off */
		309	get_hv (name, create);
		310	#endif
		311	return get_hv (name, create);
		312	}
		313
219	static AV *	314	static AV *
220	coro_clone_padlist (pTHX_ CV *cv)	315	coro_clone_padlist (pTHX_ CV *cv)
221	{	316	{
222	AV *padlist = CvPADLIST (cv);	317	AV *padlist = CvPADLIST (cv);
223	AV *newpadlist, *newpad;	318	AV *newpadlist, *newpad;
224		319
225	newpadlist = newAV ();	320	newpadlist = newAV ();
226	AvREAL_off (newpadlist);	321	AvREAL_off (newpadlist);
227	#if PERL_VERSION_ATLEAST (5,9,0)	322	#if PERL_VERSION_ATLEAST (5,10,0)
228	Perl_pad_push (aTHX_ padlist, AvFILLp (padlist) + 1);	323	Perl_pad_push (aTHX_ padlist, AvFILLp (padlist) + 1);
229	#else	324	#else
230	Perl_pad_push (aTHX_ padlist, AvFILLp (padlist) + 1, 1);	325	Perl_pad_push (aTHX_ padlist, AvFILLp (padlist) + 1, 1);
231	#endif	326	#endif
232	newpad = (AV *)AvARRAY (padlist)[AvFILLp (padlist)];	327	newpad = (AV *)AvARRAY (padlist)[AvFILLp (padlist)];
233	--AvFILLp (padlist);	328	--AvFILLp (padlist);
234		329
235	av_store (newpadlist, 0, SvREFCNT_inc (*av_fetch (padlist, 0, FALSE)));	330	av_store (newpadlist, 0, SvREFCNT_inc_NN (*av_fetch (padlist, 0, FALSE)));
236	av_store (newpadlist, 1, (SV *)newpad);	331	av_store (newpadlist, 1, (SV *)newpad);
237		332
238	return newpadlist;	333	return newpadlist;
239	}	334	}
240		335
…		…
270		365
271	/* casting is fun. */	366	/* casting is fun. */
272	while (&PL_sv_undef != (SV *)(padlist = (AV *)av_pop (av)))	367	while (&PL_sv_undef != (SV *)(padlist = (AV *)av_pop (av)))
273	free_padlist (aTHX_ padlist);	368	free_padlist (aTHX_ padlist);
274		369
275	SvREFCNT_dec (av);	370	SvREFCNT_dec (av); /* sv_magicext increased the refcount */
276		371
277	return 0;	372	return 0;
278	}	373	}
279		374
280	#define PERL_MAGIC_coro PERL_MAGIC_ext	375	#define CORO_MAGIC_type_cv PERL_MAGIC_ext
		376	#define CORO_MAGIC_type_state PERL_MAGIC_ext
281		377
282	static MGVTBL vtbl_coro = {0, 0, 0, 0, coro_cv_free};	378	static MGVTBL coro_cv_vtbl = {
		379	0, 0, 0, 0,
		380	coro_cv_free
		381	};
283		382
284	#define CORO_MAGIC(cv) \	383	#define CORO_MAGIC(sv,type) \
285	SvMAGIC (cv) \	384	SvMAGIC (sv) \
286	? SvMAGIC (cv)->mg_type == PERL_MAGIC_coro \	385	? SvMAGIC (sv)->mg_type == type \
287	? SvMAGIC (cv) \	386	? SvMAGIC (sv) \
288	: mg_find ((SV *)cv, PERL_MAGIC_coro) \	387	: mg_find (sv, type) \
289	: 0	388	: 0
		389
		390	#define CORO_MAGIC_cv(cv) CORO_MAGIC (((SV *)(cv)), CORO_MAGIC_type_cv)
		391	#define CORO_MAGIC_state(sv) CORO_MAGIC (((SV *)(sv)), CORO_MAGIC_type_state)
		392
		393	static struct coro *
		394	SvSTATE_ (pTHX_ SV *coro)
		395	{
		396	HV *stash;
		397	MAGIC *mg;
		398
		399	if (SvROK (coro))
		400	coro = SvRV (coro);
		401
		402	if (expect_false (SvTYPE (coro) != SVt_PVHV))
		403	croak ("Coro::State object required");
		404
		405	stash = SvSTASH (coro);
		406	if (expect_false (stash != coro_stash && stash != coro_state_stash))
		407	{
		408	/* very slow, but rare, check */
		409	if (!sv_derived_from (sv_2mortal (newRV_inc (coro)), "Coro::State"))
		410	croak ("Coro::State object required");
		411	}
		412
		413	mg = CORO_MAGIC_state (coro);
		414	return (struct coro *)mg->mg_ptr;
		415	}
		416
		417	#define SvSTATE(sv) SvSTATE_ (aTHX_ (sv))
290		418
291	/* the next two functions merely cache the padlists */	419	/* the next two functions merely cache the padlists */
292	static void	420	static void
293	get_padlist (pTHX_ CV *cv)	421	get_padlist (pTHX_ CV *cv)
294	{	422	{
295	MAGIC *mg = CORO_MAGIC (cv);	423	MAGIC *mg = CORO_MAGIC_cv (cv);
296	AV *av;	424	AV *av;
297		425
298	if (mg && AvFILLp ((av = (AV *)mg->mg_obj)) >= 0)	426	if (expect_true (mg && AvFILLp ((av = (AV *)mg->mg_obj)) >= 0))
299	CvPADLIST (cv) = (AV *)AvARRAY (av)[AvFILLp (av)--];	427	CvPADLIST (cv) = (AV *)AvARRAY (av)[AvFILLp (av)--];
300	else	428	else
301	{	429	{
302	#if CORO_PREFER_PERL_FUNCTIONS	430	#if CORO_PREFER_PERL_FUNCTIONS
303	/* this is probably cleaner, but also slower? */	431	/* this is probably cleaner? but also slower! */
		432	/* in practise, it seems to be less stable */
304	CV *cp = Perl_cv_clone (cv);	433	CV *cp = Perl_cv_clone (cv);
305	CvPADLIST (cv) = CvPADLIST (cp);	434	CvPADLIST (cv) = CvPADLIST (cp);
306	CvPADLIST (cp) = 0;	435	CvPADLIST (cp) = 0;
307	SvREFCNT_dec (cp);	436	SvREFCNT_dec (cp);
308	#else	437	#else
…		…
312	}	441	}
313		442
314	static void	443	static void
315	put_padlist (pTHX_ CV *cv)	444	put_padlist (pTHX_ CV *cv)
316	{	445	{
317	MAGIC *mg = CORO_MAGIC (cv);	446	MAGIC *mg = CORO_MAGIC_cv (cv);
318	AV *av;	447	AV *av;
319		448
320	if (!mg)	449	if (expect_false (!mg))
321	{	450	mg = sv_magicext ((SV *)cv, (SV *)newAV (), CORO_MAGIC_type_cv, &coro_cv_vtbl, 0, 0);
322	sv_magic ((SV *)cv, 0, PERL_MAGIC_coro, 0, 0);
323	mg = mg_find ((SV *)cv, PERL_MAGIC_coro);
324	mg->mg_virtual = &vtbl_coro;
325	mg->mg_obj = (SV *)newAV ();
326	}
327		451
328	av = (AV *)mg->mg_obj;	452	av = (AV *)mg->mg_obj;
329		453
330	if (AvFILLp (av) >= AvMAX (av))	454	if (expect_false (AvFILLp (av) >= AvMAX (av)))
331	av_extend (av, AvMAX (av) + 1);	455	av_extend (av, AvMAX (av) + 1);
332		456
333	AvARRAY (av)[++AvFILLp (av)] = (SV *)CvPADLIST (cv);	457	AvARRAY (av)[++AvFILLp (av)] = (SV *)CvPADLIST (cv);
334	}	458	}
335		459
336	/** load & save, init *******************************************************/	460	/** load & save, init *******************************************************/
337
338	#define SB do {
339	#define SE } while (0)
340
341	#define REPLACE_SV(sv,val) SB SvREFCNT_dec (sv); (sv) = (val); (val) = 0; SE
342		461
343	static void	462	static void
344	load_perl (pTHX_ Coro__State c)	463	load_perl (pTHX_ Coro__State c)
345	{	464	{
		465	perl_slots *slot = c->slot;
		466	c->slot = 0;
		467
		468	PL_mainstack = c->mainstack;
		469
		470	GvSV (PL_defgv) = slot->defsv;
		471	GvAV (PL_defgv) = slot->defav;
		472	GvSV (PL_errgv) = slot->errsv;
		473	GvSV (irsgv) = slot->irsgv;
		474
346	#define VAR(name,type) PL_ ## name = c->name;	475	#define VAR(name,type) PL_ ## name = slot->name;
347	# include "state.h"	476	# include "state.h"
348	#undef VAR	477	#undef VAR
349
350	if (c->defav) REPLACE_SV (GvAV (PL_defgv), c->defav);
351	if (c->defsv) REPLACE_SV (DEFSV , c->defsv);
352	if (c->errsv) REPLACE_SV (ERRSV , c->errsv);
353	if (c->deffh) REPLACE_SV (PL_defoutgv , c->deffh);
354
355	if (c->irssv)
356	{
357	if (c->irssv == PL_rs || sv_eq (PL_rs, c->irssv))
358	{
359	SvREFCNT_dec (c->irssv);
360	c->irssv = 0;
361	}
362	else
363	{
364	REPLACE_SV (PL_rs, c->irssv);
365	if (!c->irssv_sv) c->irssv_sv = get_sv ("/", 0);
366	sv_setsv (c->irssv_sv, PL_rs);
367	}
368	}
369		478
370	{	479	{
371	dSP;	480	dSP;
		481
372	CV *cv;	482	CV *cv;
373		483
374	/* now do the ugly restore mess */	484	/* now do the ugly restore mess */
375	while ((cv = (CV *)POPs))	485	while (expect_true (cv = (CV *)POPs))
376	{	486	{
377	put_padlist (aTHX_ cv); /* mark this padlist as available */	487	put_padlist (aTHX_ cv); /* mark this padlist as available */
378	CvDEPTH (cv) = PTR2IV (POPs);	488	CvDEPTH (cv) = PTR2IV (POPs);
379	CvPADLIST (cv) = (AV *)POPs;	489	CvPADLIST (cv) = (AV *)POPs;
380	}	490	}
…		…
399		509
400	XPUSHs (Nullsv);	510	XPUSHs (Nullsv);
401	/* this loop was inspired by pp_caller */	511	/* this loop was inspired by pp_caller */
402	for (;;)	512	for (;;)
403	{	513	{
404	while (cxix >= 0)	514	while (expect_true (cxix >= 0))
405	{	515	{
406	PERL_CONTEXT *cx = &ccstk[cxix--];	516	PERL_CONTEXT *cx = &ccstk[cxix--];
407		517
408	if (CxTYPE (cx) == CXt_SUB || CxTYPE (cx) == CXt_FORMAT)	518	if (expect_true (CxTYPE (cx) == CXt_SUB || CxTYPE (cx) == CXt_FORMAT))
409	{	519	{
410	CV *cv = cx->blk_sub.cv;	520	CV *cv = cx->blk_sub.cv;
411		521
412	if (CvDEPTH (cv))	522	if (expect_true (CvDEPTH (cv)))
413	{	523	{
414	EXTEND (SP, 3);	524	EXTEND (SP, 3);
415	PUSHs ((SV *)CvPADLIST (cv));	525	PUSHs ((SV *)CvPADLIST (cv));
416	PUSHs (INT2PTR (SV *, CvDEPTH (cv)));	526	PUSHs (INT2PTR (SV *, (IV)CvDEPTH (cv)));
417	PUSHs ((SV *)cv);	527	PUSHs ((SV *)cv);
418		528
419	CvDEPTH (cv) = 0;	529	CvDEPTH (cv) = 0;
420	get_padlist (aTHX_ cv);	530	get_padlist (aTHX_ cv);
421	}	531	}
422	}	532	}
423	}	533	}
424		534
425	if (top_si->si_type == PERLSI_MAIN)	535	if (expect_true (top_si->si_type == PERLSI_MAIN))
426	break;	536	break;
427		537
428	top_si = top_si->si_prev;	538	top_si = top_si->si_prev;
429	ccstk = top_si->si_cxstack;	539	ccstk = top_si->si_cxstack;
430	cxix = top_si->si_cxix;	540	cxix = top_si->si_cxix;
431	}	541	}
432		542
433	PUTBACK;	543	PUTBACK;
434	}	544	}
435		545
436	c->defav = c->save & CORO_SAVE_DEFAV ? (AV *)SvREFCNT_inc (GvAV (PL_defgv)) : 0;	546	/* allocate some space on the context stack for our purposes */
437	c->defsv = c->save & CORO_SAVE_DEFSV ? SvREFCNT_inc (DEFSV) : 0;	547	/* we manually unroll here, as usually 2 slots is enough */
438	c->errsv = c->save & CORO_SAVE_ERRSV ? SvREFCNT_inc (ERRSV) : 0;	548	if (SLOT_COUNT >= 1) CXINC;
439	c->deffh = c->save & CORO_SAVE_DEFFH ? (GV *)SvREFCNT_inc (PL_defoutgv) : 0;	549	if (SLOT_COUNT >= 2) CXINC;
440	c->irssv = c->save & CORO_SAVE_IRSSV ? SvREFCNT_inc (PL_rs) : 0;	550	if (SLOT_COUNT >= 3) CXINC;
		551	{
		552	int i;
		553	for (i = 3; i < SLOT_COUNT; ++i)
		554	CXINC;
		555	}
		556	cxstack_ix -= SLOT_COUNT; /* undo allocation */
441		557
		558	c->mainstack = PL_mainstack;
		559
		560	{
		561	perl_slots *slot = c->slot = (perl_slots *)(cxstack + cxstack_ix + 1);
		562
		563	slot->defav = GvAV (PL_defgv);
		564	slot->defsv = DEFSV;
		565	slot->errsv = ERRSV;
		566	slot->irsgv = GvSV (irsgv);
		567
442	#define VAR(name,type)c->name = PL_ ## name;	568	#define VAR(name,type) slot->name = PL_ ## name;
443	# include "state.h"	569	# include "state.h"
444	#undef VAR	570	#undef VAR
		571	}
445	}	572	}
446		573
447	/*	574	/*
448	* allocate various perl stacks. This is an exact copy	575	* allocate various perl stacks. This is an exact copy
449	* of perl.c:init_stacks, except that it uses less memory	576	* of perl.c:init_stacks, except that it uses less memory
…		…
454	# define coro_init_stacks init_stacks	581	# define coro_init_stacks init_stacks
455	#else	582	#else
456	static void	583	static void
457	coro_init_stacks (pTHX)	584	coro_init_stacks (pTHX)
458	{	585	{
459	PL_curstackinfo = new_stackinfo(64, 6);	586	PL_curstackinfo = new_stackinfo(32, 8);
460	PL_curstackinfo->si_type = PERLSI_MAIN;	587	PL_curstackinfo->si_type = PERLSI_MAIN;
461	PL_curstack = PL_curstackinfo->si_stack;	588	PL_curstack = PL_curstackinfo->si_stack;
462	PL_mainstack = PL_curstack; /* remember in case we switch stacks */	589	PL_mainstack = PL_curstack; /* remember in case we switch stacks */
463		590
464	PL_stack_base = AvARRAY(PL_curstack);	591	PL_stack_base = AvARRAY(PL_curstack);
465	PL_stack_sp = PL_stack_base;	592	PL_stack_sp = PL_stack_base;
466	PL_stack_max = PL_stack_base + AvMAX(PL_curstack);	593	PL_stack_max = PL_stack_base + AvMAX(PL_curstack);
467		594
468	New(50,PL_tmps_stack,64,SV*);	595	New(50,PL_tmps_stack,32,SV*);
469	PL_tmps_floor = -1;	596	PL_tmps_floor = -1;
470	PL_tmps_ix = -1;	597	PL_tmps_ix = -1;
471	PL_tmps_max = 64;	598	PL_tmps_max = 32;
472		599
473	New(54,PL_markstack,16,I32);	600	New(54,PL_markstack,16,I32);
474	PL_markstack_ptr = PL_markstack;	601	PL_markstack_ptr = PL_markstack;
475	PL_markstack_max = PL_markstack + 16;	602	PL_markstack_max = PL_markstack + 16;
476		603
477	#ifdef SET_MARK_OFFSET	604	#ifdef SET_MARK_OFFSET
478	SET_MARK_OFFSET;	605	SET_MARK_OFFSET;
479	#endif	606	#endif
480		607
481	New(54,PL_scopestack,16,I32);	608	New(54,PL_scopestack,8,I32);
482	PL_scopestack_ix = 0;	609	PL_scopestack_ix = 0;
483	PL_scopestack_max = 16;	610	PL_scopestack_max = 8;
484		611
485	New(54,PL_savestack,64,ANY);	612	New(54,PL_savestack,24,ANY);
486	PL_savestack_ix = 0;	613	PL_savestack_ix = 0;
487	PL_savestack_max = 64;	614	PL_savestack_max = 24;
488		615
489	#if !PERL_VERSION_ATLEAST (5,9,0)	616	#if !PERL_VERSION_ATLEAST (5,10,0)
490	New(54,PL_retstack,4,OP*);	617	New(54,PL_retstack,4,OP*);
491	PL_retstack_ix = 0;	618	PL_retstack_ix = 0;
492	PL_retstack_max = 4;	619	PL_retstack_max = 4;
493	#endif	620	#endif
494	}	621	}
…		…
498	* destroy the stacks, the callchain etc...	625	* destroy the stacks, the callchain etc...
499	*/	626	*/
500	static void	627	static void
501	coro_destroy_stacks (pTHX)	628	coro_destroy_stacks (pTHX)
502	{	629	{
503	if (!IN_DESTRUCT)
504	{
505	/* restore all saved variables and stuff */
506	LEAVE_SCOPE (0);
507	assert (PL_tmps_floor == -1);
508
509	/* free all temporaries */
510	FREETMPS;
511	assert (PL_tmps_ix == -1);
512
513	/* unwind all extra stacks */
514	POPSTACK_TO (PL_mainstack);
515
516	/* unwind main stack */
517	dounwind (-1);
518	}
519
520	while (PL_curstackinfo->si_next)	630	while (PL_curstackinfo->si_next)
521	PL_curstackinfo = PL_curstackinfo->si_next;	631	PL_curstackinfo = PL_curstackinfo->si_next;
522		632
523	while (PL_curstackinfo)	633	while (PL_curstackinfo)
524	{	634	{
…		…
534		644
535	Safefree (PL_tmps_stack);	645	Safefree (PL_tmps_stack);
536	Safefree (PL_markstack);	646	Safefree (PL_markstack);
537	Safefree (PL_scopestack);	647	Safefree (PL_scopestack);
538	Safefree (PL_savestack);	648	Safefree (PL_savestack);
539	#if !PERL_VERSION_ATLEAST (5,9,0)	649	#if !PERL_VERSION_ATLEAST (5,10,0)
540	Safefree (PL_retstack);	650	Safefree (PL_retstack);
541	#endif	651	#endif
542	}	652	}
543		653
544	static size_t	654	static size_t
545	coro_rss (struct coro *coro)	655	coro_rss (pTHX_ struct coro *coro)
546	{	656	{
547	size_t rss = sizeof (coro);	657	size_t rss = sizeof (*coro);
548		658
549	if (coro->mainstack)	659	if (coro->mainstack)
550	{	660	{
		661	perl_slots tmp_slot;
		662	perl_slots *slot;
		663
551	if (coro->flags & CF_RUNNING)	664	if (coro->flags & CF_RUNNING)
552	{	665	{
		666	slot = &tmp_slot;
		667
553	#define VAR(name,type)coro->name = PL_ ## name;	668	#define VAR(name,type) slot->name = PL_ ## name;
554	# include "state.h"	669	# include "state.h"
555	#undef VAR	670	#undef VAR
556	}	671	}
		672	else
		673	slot = coro->slot;
557		674
		675	if (slot)
		676	{
558	rss += sizeof (coro->curstackinfo);	677	rss += sizeof (slot->curstackinfo);
559	rss += sizeof (struct xpvav) + (1 + AvFILL (coro->curstackinfo->si_stack)) * sizeof (SV *);
560	rss += (coro->curstackinfo->si_cxmax + 1) * sizeof (PERL_CONTEXT);	678	rss += (slot->curstackinfo->si_cxmax + 1) * sizeof (PERL_CONTEXT);
561	rss += sizeof (struct xpvav) + (1 + AvFILL (coro->curstack)) * sizeof (SV *);	679	rss += sizeof (SV) + sizeof (struct xpvav) + (1 + AvMAX (slot->curstack)) * sizeof (SV *);
562	rss += coro->tmps_max * sizeof (SV *);	680	rss += slot->tmps_max * sizeof (SV *);
563	rss += (coro->markstack_max - coro->markstack_ptr) * sizeof (I32);	681	rss += (slot->markstack_max - slot->markstack_ptr) * sizeof (I32);
564	rss += coro->scopestack_max * sizeof (I32);	682	rss += slot->scopestack_max * sizeof (I32);
565	rss += coro->savestack_max * sizeof (ANY);	683	rss += slot->savestack_max * sizeof (ANY);
566		684
567	#if !PERL_VERSION_ATLEAST (5,9,0)	685	#if !PERL_VERSION_ATLEAST (5,10,0)
568	rss += coro->retstack_max * sizeof (OP *);	686	rss += slot->retstack_max * sizeof (OP *);
569	#endif	687	#endif
		688	}
570	}	689	}
571		690
572	return rss;	691	return rss;
573	}	692	}
574		693
575	/** coroutine stack handling ************************************************/	694	/** coroutine stack handling ************************************************/
576		695
		696	static int (*orig_sigelem_get) (pTHX_ SV *sv, MAGIC *mg);
		697	static int (*orig_sigelem_set) (pTHX_ SV *sv, MAGIC *mg);
		698	static int (*orig_sigelem_clr) (pTHX_ SV *sv, MAGIC *mg);
		699
		700	/* apparently < 5.8.8 */
		701	#ifndef MgPV_nolen_const
		702	#define MgPV_nolen_const(mg) (((((int)(mg)->mg_len)) == HEf_SVKEY) ? \
		703	SvPV_nolen((SV*)((mg)->mg_ptr)) : \
		704	(const char*)(mg)->mg_ptr)
		705	#endif
		706
		707	/*
		708	* This overrides the default magic get method of %SIG elements.
		709	* The original one doesn't provide for reading back of PL_diehook/PL_warnhook
		710	* and instead of tryign to save and restore the hash elements, we just provide
		711	* readback here.
		712	* We only do this when the hook is != 0, as they are often set to 0 temporarily,
		713	* not expecting this to actually change the hook. This is a potential problem
		714	* when a schedule happens then, but we ignore this.
		715	*/
		716	static int
		717	coro_sigelem_get (pTHX_ SV *sv, MAGIC *mg)
		718	{
		719	const char *s = MgPV_nolen_const (mg);
		720
		721	if (*s == '_')
		722	{
		723	SV **svp = 0;
		724
		725	if (strEQ (s, "__DIE__" )) svp = &PL_diehook;
		726	if (strEQ (s, "__WARN__")) svp = &PL_warnhook;
		727
		728	if (svp)
		729	{
		730	sv_setsv (sv, *svp ? *svp : &PL_sv_undef);
		731	return 0;
		732	}
		733	}
		734
		735	return orig_sigelem_get ? orig_sigelem_get (aTHX_ sv, mg) : 0;
		736	}
		737
		738	static int
		739	coro_sigelem_clr (pTHX_ SV *sv, MAGIC *mg)
		740	{
		741	const char *s = MgPV_nolen_const (mg);
		742
		743	if (*s == '_')
		744	{
		745	SV **svp = 0;
		746
		747	if (strEQ (s, "__DIE__" )) svp = &PL_diehook;
		748	if (strEQ (s, "__WARN__")) svp = &PL_warnhook;
		749
		750	if (svp)
		751	{
		752	SV *old = *svp;
		753	*svp = 0;
		754	SvREFCNT_dec (old);
		755	return 0;
		756	}
		757	}
		758
		759	return orig_sigelem_clr ? orig_sigelem_clr (aTHX_ sv, mg) : 0;
		760	}
		761
		762	static int
		763	coro_sigelem_set (pTHX_ SV *sv, MAGIC *mg)
		764	{
		765	const char *s = MgPV_nolen_const (mg);
		766
		767	if (*s == '_')
		768	{
		769	SV **svp = 0;
		770
		771	if (strEQ (s, "__DIE__" )) svp = &PL_diehook;
		772	if (strEQ (s, "__WARN__")) svp = &PL_warnhook;
		773
		774	if (svp)
		775	{
		776	SV *old = *svp;
		777	*svp = newSVsv (sv);
		778	SvREFCNT_dec (old);
		779	return 0;
		780	}
		781	}
		782
		783	return orig_sigelem_set ? orig_sigelem_set (aTHX_ sv, mg) : 0;
		784	}
		785
577	static void	786	static void
578	setup_coro (pTHX_ struct coro *coro)	787	coro_setup (pTHX_ struct coro *coro)
579	{	788	{
580	/*	789	/*
581	* emulate part of the perl startup here.	790	* emulate part of the perl startup here.
582	*/	791	*/
583	coro_init_stacks (aTHX);	792	coro_init_stacks (aTHX);
584		793
		794	PL_runops = RUNOPS_DEFAULT;
585	PL_curcop = &PL_compiling;	795	PL_curcop = &PL_compiling;
586	PL_in_eval = EVAL_NULL;	796	PL_in_eval = EVAL_NULL;
587	PL_comppad = 0;	797	PL_comppad = 0;
588	PL_curpm = 0;	798	PL_curpm = 0;
		799	PL_curpad = 0;
589	PL_localizing = 0;	800	PL_localizing = 0;
590	PL_dirty = 0;	801	PL_dirty = 0;
591	PL_restartop = 0;	802	PL_restartop = 0;
		803	#if PERL_VERSION_ATLEAST (5,10,0)
		804	PL_parser = 0;
		805	#endif
		806
		807	/* recreate the die/warn hooks */
		808	PL_diehook = 0; SvSetMagicSV (*hv_fetch (hv_sig, "__DIE__" , sizeof ("__DIE__" ) - 1, 1), rv_diehook );
		809	PL_warnhook = 0; SvSetMagicSV (*hv_fetch (hv_sig, "__WARN__", sizeof ("__WARN__") - 1, 1), rv_warnhook);
		810
		811	GvSV (PL_defgv) = newSV (0);
		812	GvAV (PL_defgv) = coro->args; coro->args = 0;
		813	GvSV (PL_errgv) = newSV (0);
		814	GvSV (irsgv) = newSVpvn ("\n", 1); sv_magic (GvSV (irsgv), (SV *)irsgv, PERL_MAGIC_sv, "/", 0);
		815	PL_rs = newSVsv (GvSV (irsgv));
		816	PL_defoutgv = (GV *)SvREFCNT_inc_NN (stdoutgv);
592		817
593	{	818	{
594	dSP;	819	dSP;
595	LOGOP myop;	820	LOGOP myop;
596		821
597	SvREFCNT_dec (GvAV (PL_defgv));
598	GvAV (PL_defgv) = coro->args; coro->args = 0;
599
600	Zero (&myop, 1, LOGOP);	822	Zero (&myop, 1, LOGOP);
601	myop.op_next = Nullop;	823	myop.op_next = Nullop;
602	myop.op_flags = OPf_WANT_VOID;	824	myop.op_flags = OPf_WANT_VOID;
603		825
604	PUSHMARK (SP);	826	PUSHMARK (SP);
605	XPUSHs (av_shift (GvAV (PL_defgv)));	827	XPUSHs (sv_2mortal (av_shift (GvAV (PL_defgv))));
606	PUTBACK;	828	PUTBACK;
607	PL_op = (OP *)&myop;	829	PL_op = (OP *)&myop;
608	PL_op = PL_ppaddr[OP_ENTERSUB](aTHX);	830	PL_op = PL_ppaddr[OP_ENTERSUB](aTHX);
609	SPAGAIN;	831	SPAGAIN;
610	}	832	}
611		833
612	ENTER; /* necessary e.g. for dounwind */	834	/* this newly created coroutine might be run on an existing cctx which most
		835	* likely was suspended in set_stacklevel, called from entersub.
		836	* set_stacklevl doesn't do anything on return, but entersub does LEAVE,
		837	* so we ENTER here for symmetry
		838	*/
		839	ENTER;
		840	}
		841
		842	static void
		843	coro_destroy (pTHX_ struct coro *coro)
		844	{
		845	if (!IN_DESTRUCT)
		846	{
		847	/* restore all saved variables and stuff */
		848	LEAVE_SCOPE (0);
		849	assert (PL_tmps_floor == -1);
		850
		851	/* free all temporaries */
		852	FREETMPS;
		853	assert (PL_tmps_ix == -1);
		854
		855	/* unwind all extra stacks */
		856	POPSTACK_TO (PL_mainstack);
		857
		858	/* unwind main stack */
		859	dounwind (-1);
		860	}
		861
		862	SvREFCNT_dec (GvSV (PL_defgv));
		863	SvREFCNT_dec (GvAV (PL_defgv));
		864	SvREFCNT_dec (GvSV (PL_errgv));
		865	SvREFCNT_dec (PL_defoutgv);
		866	SvREFCNT_dec (PL_rs);
		867	SvREFCNT_dec (GvSV (irsgv));
		868
		869	SvREFCNT_dec (PL_diehook);
		870	SvREFCNT_dec (PL_warnhook);
		871
		872	SvREFCNT_dec (coro->saved_deffh);
		873	SvREFCNT_dec (coro->throw);
		874
		875	coro_destroy_stacks (aTHX);
613	}	876	}
614		877
615	static void	878	static void
616	free_coro_mortal (pTHX)	879	free_coro_mortal (pTHX)
617	{	880	{
618	if (coro_mortal)	881	if (expect_true (coro_mortal))
619	{	882	{
620	SvREFCNT_dec (coro_mortal);	883	SvREFCNT_dec (coro_mortal);
621	coro_mortal = 0;	884	coro_mortal = 0;
622	}	885	}
		886	}
		887
		888	static int
		889	runops_trace (pTHX)
		890	{
		891	COP *oldcop = 0;
		892	int oldcxix = -2;
		893	struct coro *coro = SvSTATE (coro_current); /* trace cctx is tied to specific coro */
		894	coro_cctx *cctx = coro->cctx;
		895
		896	while ((PL_op = CALL_FPTR (PL_op->op_ppaddr) (aTHX)))
		897	{
		898	PERL_ASYNC_CHECK ();
		899
		900	if (cctx->flags & CC_TRACE_ALL)
		901	{
		902	if (PL_op->op_type == OP_LEAVESUB && cctx->flags & CC_TRACE_SUB)
		903	{
		904	PERL_CONTEXT *cx = &cxstack[cxstack_ix];
		905	SV **bot, **top;
		906	AV *av = newAV (); /* return values */
		907	SV **cb;
		908	dSP;
		909
		910	GV *gv = CvGV (cx->blk_sub.cv);
		911	SV *fullname = sv_2mortal (newSV (0));
		912	if (isGV (gv))
		913	gv_efullname3 (fullname, gv, 0);
		914
		915	bot = PL_stack_base + cx->blk_oldsp + 1;
		916	top = cx->blk_gimme == G_ARRAY ? SP + 1
		917	: cx->blk_gimme == G_SCALAR ? bot + 1
		918	: bot;
		919
		920	av_extend (av, top - bot);
		921	while (bot < top)
		922	av_push (av, SvREFCNT_inc_NN (*bot++));
		923
		924	PL_runops = RUNOPS_DEFAULT;
		925	ENTER;
		926	SAVETMPS;
		927	EXTEND (SP, 3);
		928	PUSHMARK (SP);
		929	PUSHs (&PL_sv_no);
		930	PUSHs (fullname);
		931	PUSHs (sv_2mortal (newRV_noinc ((SV *)av)));
		932	PUTBACK;
		933	cb = hv_fetch ((HV *)SvRV (coro_current), "_trace_sub_cb", sizeof ("_trace_sub_cb") - 1, 0);
		934	if (cb) call_sv (*cb, G_KEEPERR | G_EVAL | G_VOID | G_DISCARD);
		935	SPAGAIN;
		936	FREETMPS;
		937	LEAVE;
		938	PL_runops = runops_trace;
		939	}
		940
		941	if (oldcop != PL_curcop)
		942	{
		943	oldcop = PL_curcop;
		944
		945	if (PL_curcop != &PL_compiling)
		946	{
		947	SV **cb;
		948
		949	if (oldcxix != cxstack_ix && cctx->flags & CC_TRACE_SUB)
		950	{
		951	PERL_CONTEXT *cx = &cxstack[cxstack_ix];
		952
		953	if (CxTYPE (cx) == CXt_SUB && oldcxix < cxstack_ix)
		954	{
		955	runops_proc_t old_runops = PL_runops;
		956	dSP;
		957	GV *gv = CvGV (cx->blk_sub.cv);
		958	SV *fullname = sv_2mortal (newSV (0));
		959
		960	if (isGV (gv))
		961	gv_efullname3 (fullname, gv, 0);
		962
		963	PL_runops = RUNOPS_DEFAULT;
		964	ENTER;
		965	SAVETMPS;
		966	EXTEND (SP, 3);
		967	PUSHMARK (SP);
		968	PUSHs (&PL_sv_yes);
		969	PUSHs (fullname);
		970	PUSHs (CxHASARGS (cx) ? sv_2mortal (newRV_inc ((SV *)cx->blk_sub.argarray)) : &PL_sv_undef);
		971	PUTBACK;
		972	cb = hv_fetch ((HV *)SvRV (coro_current), "_trace_sub_cb", sizeof ("_trace_sub_cb") - 1, 0);
		973	if (cb) call_sv (*cb, G_KEEPERR | G_EVAL | G_VOID | G_DISCARD);
		974	SPAGAIN;
		975	FREETMPS;
		976	LEAVE;
		977	PL_runops = runops_trace;
		978	}
		979
		980	oldcxix = cxstack_ix;
		981	}
		982
		983	if (cctx->flags & CC_TRACE_LINE)
		984	{
		985	dSP;
		986
		987	PL_runops = RUNOPS_DEFAULT;
		988	ENTER;
		989	SAVETMPS;
		990	EXTEND (SP, 3);
		991	PL_runops = RUNOPS_DEFAULT;
		992	PUSHMARK (SP);
		993	PUSHs (sv_2mortal (newSVpv (OutCopFILE (oldcop), 0)));
		994	PUSHs (sv_2mortal (newSViv (CopLINE (oldcop))));
		995	PUTBACK;
		996	cb = hv_fetch ((HV *)SvRV (coro_current), "_trace_line_cb", sizeof ("_trace_line_cb") - 1, 0);
		997	if (cb) call_sv (*cb, G_KEEPERR | G_EVAL | G_VOID | G_DISCARD);
		998	SPAGAIN;
		999	FREETMPS;
		1000	LEAVE;
		1001	PL_runops = runops_trace;
		1002	}
		1003	}
		1004	}
		1005	}
		1006	}
		1007
		1008	TAINT_NOT;
		1009	return 0;
623	}	1010	}
624		1011
625	/* inject a fake call to Coro::State::_cctx_init into the execution */	1012	/* inject a fake call to Coro::State::_cctx_init into the execution */
626	/* _cctx_init should be careful, as it could be called at almost any time */	1013	/* _cctx_init should be careful, as it could be called at almost any time */
627	/* during execution of a perl program */	1014	/* during execution of a perl program */
628	static void NOINLINE	1015	static void NOINLINE
629	prepare_cctx (pTHX_ coro_cctx *cctx)	1016	cctx_prepare (pTHX_ coro_cctx *cctx)
630	{	1017	{
631	dSP;	1018	dSP;
632	LOGOP myop;	1019	LOGOP myop;
		1020
		1021	PL_top_env = &PL_start_env;
		1022
		1023	if (cctx->flags & CC_TRACE)
		1024	PL_runops = runops_trace;
633		1025
634	Zero (&myop, 1, LOGOP);	1026	Zero (&myop, 1, LOGOP);
635	myop.op_next = PL_op;	1027	myop.op_next = PL_op;
636	myop.op_flags = OPf_WANT_VOID | OPf_STACKED;	1028	myop.op_flags = OPf_WANT_VOID | OPf_STACKED;
637		1029
…		…
647		1039
648	/*	1040	/*
649	* this is a _very_ stripped down perl interpreter ;)	1041	* this is a _very_ stripped down perl interpreter ;)
650	*/	1042	*/
651	static void	1043	static void
652	coro_run (void *arg)	1044	cctx_run (void *arg)
653	{	1045	{
654	dTHX;	1046	dTHX;
655		1047
656	/* coro_run is the alternative tail of transfer(), so unlock here. */	1048	/* cctx_run is the alternative tail of transfer(), so unlock here. */
657	UNLOCK;	1049	UNLOCK;
658		1050
659	PL_top_env = &PL_start_env;	1051	/* we now skip the entersub that lead to transfer() */
		1052	PL_op = PL_op->op_next;
660		1053
661	/* inject a fake subroutine call to cctx_init */	1054	/* inject a fake subroutine call to cctx_init */
662	prepare_cctx (aTHX_ (coro_cctx *)arg);	1055	cctx_prepare (aTHX_ (coro_cctx *)arg);
663		1056
664	/* somebody or something will hit me for both perl_run and PL_restartop */	1057	/* somebody or something will hit me for both perl_run and PL_restartop */
665	PL_restartop = PL_op;	1058	PL_restartop = PL_op;
666	perl_run (PL_curinterp);	1059	perl_run (PL_curinterp);
667		1060
…		…
686	++cctx_count;	1079	++cctx_count;
687		1080
688	Newz (0, cctx, 1, coro_cctx);	1081	Newz (0, cctx, 1, coro_cctx);
689		1082
690	#if HAVE_MMAP	1083	#if HAVE_MMAP
691
692	cctx->ssize = ((coro_stacksize * sizeof (long) + PAGESIZE - 1) / PAGESIZE + CORO_STACKGUARD) * PAGESIZE;	1084	cctx->ssize = ((coro_stacksize * sizeof (long) + PAGESIZE - 1) / PAGESIZE + CORO_STACKGUARD) * PAGESIZE;
693	/* mmap supposedly does allocate-on-write for us */	1085	/* mmap supposedly does allocate-on-write for us */
694	cctx->sptr = mmap (0, cctx->ssize, PROT_EXEC|PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, 0, 0);	1086	cctx->sptr = mmap (0, cctx->ssize, PROT_EXEC|PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, 0, 0);
695		1087
696	if (cctx->sptr != (void *)-1)	1088	if (cctx->sptr != (void *)-1)
…		…
698	# if CORO_STACKGUARD	1090	# if CORO_STACKGUARD
699	mprotect (cctx->sptr, CORO_STACKGUARD * PAGESIZE, PROT_NONE);	1091	mprotect (cctx->sptr, CORO_STACKGUARD * PAGESIZE, PROT_NONE);
700	# endif	1092	# endif
701	stack_start = CORO_STACKGUARD * PAGESIZE + (char *)cctx->sptr;	1093	stack_start = CORO_STACKGUARD * PAGESIZE + (char *)cctx->sptr;
702	stack_size = cctx->ssize - CORO_STACKGUARD * PAGESIZE;	1094	stack_size = cctx->ssize - CORO_STACKGUARD * PAGESIZE;
703	cctx->mapped = 1;	1095	cctx->flags |= CC_MAPPED;
704	}	1096	}
705	else	1097	else
706	#endif	1098	#endif
707	{	1099	{
708	cctx->ssize = coro_stacksize * (long)sizeof (long);	1100	cctx->ssize = coro_stacksize * (long)sizeof (long);
…		…
717	stack_start = cctx->sptr;	1109	stack_start = cctx->sptr;
718	stack_size = cctx->ssize;	1110	stack_size = cctx->ssize;
719	}	1111	}
720		1112
721	REGISTER_STACK (cctx, (char *)stack_start, (char *)stack_start + stack_size);	1113	REGISTER_STACK (cctx, (char *)stack_start, (char *)stack_start + stack_size);
722	coro_create (&cctx->cctx, coro_run, (void *)cctx, stack_start, stack_size);	1114	coro_create (&cctx->cctx, cctx_run, (void *)cctx, stack_start, stack_size);
723		1115
724	return cctx;	1116	return cctx;
725	}	1117	}
726		1118
727	static void	1119	static void
…		…
735	#if CORO_USE_VALGRIND	1127	#if CORO_USE_VALGRIND
736	VALGRIND_STACK_DEREGISTER (cctx->valgrind_id);	1128	VALGRIND_STACK_DEREGISTER (cctx->valgrind_id);
737	#endif	1129	#endif
738		1130
739	#if HAVE_MMAP	1131	#if HAVE_MMAP
740	if (cctx->mapped)	1132	if (cctx->flags & CC_MAPPED)
741	munmap (cctx->sptr, cctx->ssize);	1133	munmap (cctx->sptr, cctx->ssize);
742	else	1134	else
743	#endif	1135	#endif
744	Safefree (cctx->sptr);	1136	Safefree (cctx->sptr);
745		1137
746	Safefree (cctx);	1138	Safefree (cctx);
747	}	1139	}
748		1140
		1141	/* wether this cctx should be destructed */
		1142	#define CCTX_EXPIRED(cctx) ((cctx)->ssize < coro_stacksize || ((cctx)->flags & CC_NOREUSE))
		1143
749	static coro_cctx *	1144	static coro_cctx *
750	cctx_get (pTHX)	1145	cctx_get (pTHX)
751	{	1146	{
752	while (cctx_first)	1147	while (expect_true (cctx_first))
753	{	1148	{
754	coro_cctx *cctx = cctx_first;	1149	coro_cctx *cctx = cctx_first;
755	cctx_first = cctx->next;	1150	cctx_first = cctx->next;
756	--cctx_idle;	1151	--cctx_idle;
757		1152
758	if (cctx->ssize >= coro_stacksize)	1153	if (expect_true (!CCTX_EXPIRED (cctx)))
759	return cctx;	1154	return cctx;
760		1155
761	cctx_destroy (cctx);	1156	cctx_destroy (cctx);
762	}	1157	}
763		1158
764	PL_op = PL_op->op_next;
765	return cctx_new ();	1159	return cctx_new ();
766	}	1160	}
767		1161
768	static void	1162	static void
769	cctx_put (coro_cctx *cctx)	1163	cctx_put (coro_cctx *cctx)
770	{	1164	{
771	/* free another cctx if overlimit */	1165	/* free another cctx if overlimit */
772	if (cctx_idle >= MAX_IDLE_CCTX)	1166	if (expect_false (cctx_idle >= MAX_IDLE_CCTX))
773	{	1167	{
774	coro_cctx *first = cctx_first;	1168	coro_cctx *first = cctx_first;
775	cctx_first = first->next;	1169	cctx_first = first->next;
776	--cctx_idle;	1170	--cctx_idle;
777		1171
778	assert (!first->inuse);
779	cctx_destroy (first);	1172	cctx_destroy (first);
780	}	1173	}
781		1174
782	++cctx_idle;	1175	++cctx_idle;
783	cctx->next = cctx_first;	1176	cctx->next = cctx_first;
784	cctx_first = cctx;	1177	cctx_first = cctx;
785	}	1178	}
786		1179
787	/** coroutine switching *****************************************************/	1180	/** coroutine switching *****************************************************/
788		1181
789	/* never call directly, always through the coro_state_transfer global variable */	1182	static void
		1183	transfer_check (pTHX_ struct coro *prev, struct coro *next)
		1184	{
		1185	if (expect_true (prev != next))
		1186	{
		1187	if (expect_false (!(prev->flags & (CF_RUNNING | CF_NEW))))
		1188	croak ("Coro::State::transfer called with non-running/new prev Coro::State, but can only transfer from running or new states");
		1189
		1190	if (expect_false (next->flags & CF_RUNNING))
		1191	croak ("Coro::State::transfer called with running next Coro::State, but can only transfer to inactive states");
		1192
		1193	if (expect_false (next->flags & CF_DESTROYED))
		1194	croak ("Coro::State::transfer called with destroyed next Coro::State, but can only transfer to inactive states");
		1195
		1196	#if !PERL_VERSION_ATLEAST (5,10,0)
		1197	if (expect_false (PL_lex_state != LEX_NOTPARSING))
		1198	croak ("Coro::State::transfer called while parsing, but this is not supported in your perl version");
		1199	#endif
		1200	}
		1201	}
		1202
		1203	/* always use the TRANSFER macro */
790	static void NOINLINE	1204	static void NOINLINE
791	transfer (pTHX_ struct coro *prev, struct coro *next)	1205	transfer (pTHX_ struct coro *prev, struct coro *next, int force_cctx)
792	{	1206	{
793	dSTACKLEVEL;	1207	dSTACKLEVEL;
		1208	static volatile int has_throw;
794		1209
795	/* sometimes transfer is only called to set idle_sp */	1210	/* sometimes transfer is only called to set idle_sp */
796	if (!next)	1211	if (expect_false (!next))
797	{	1212	{
798	((coro_cctx *)prev)->idle_sp = STACKLEVEL;	1213	((coro_cctx *)prev)->idle_sp = STACKLEVEL;
799	assert (((coro_cctx *)prev)->idle_te = PL_top_env); /* just for the side-effect when asserts are enabled */	1214	assert (((coro_cctx *)prev)->idle_te = PL_top_env); /* just for the side-effect when asserts are enabled */
800	}	1215	}
801	else if (prev != next)	1216	else if (expect_true (prev != next))
802	{	1217	{
803	coro_cctx *prev__cctx;	1218	coro_cctx *prev__cctx;
804		1219
805	if (prev->flags & CF_NEW)	1220	if (expect_false (prev->flags & CF_NEW))
806	{	1221	{
807	/* create a new empty context */	1222	/* create a new empty context */
808	Newz (0, prev->cctx, 1, coro_cctx);	1223	Newz (0, prev->cctx, 1, coro_cctx);
809	prev->cctx->inuse = 1;
810	prev->flags &= ~CF_NEW;	1224	prev->flags &= ~CF_NEW;
811	prev->flags |= CF_RUNNING;	1225	prev->flags |= CF_RUNNING;
812	}	1226	}
813		1227
814	/*TODO: must not croak here */
815	if (!prev->flags & CF_RUNNING)
816	croak ("Coro::State::transfer called with non-running prev Coro::State, but can only transfer from running states");
817
818	if (next->flags & CF_RUNNING)
819	croak ("Coro::State::transfer called with running next Coro::State, but can only transfer to inactive states");
820
821	if (next->flags & CF_DESTROYED)
822	croak ("Coro::State::transfer called with destroyed next Coro::State, but can only transfer to inactive states");
823
824	prev->flags &= ~CF_RUNNING;	1228	prev->flags &= ~CF_RUNNING;
825	next->flags |= CF_RUNNING;	1229	next->flags |= CF_RUNNING;
826		1230
827	LOCK;	1231	LOCK;
828		1232
		1233	/* first get rid of the old state */
		1234	save_perl (aTHX_ prev);
		1235
829	if (next->flags & CF_NEW)	1236	if (expect_false (next->flags & CF_NEW))
830	{	1237	{
831	/* need to start coroutine */	1238	/* need to start coroutine */
832	next->flags &= ~CF_NEW;	1239	next->flags &= ~CF_NEW;
833	/* first get rid of the old state */
834	save_perl (aTHX_ prev);
835	/* setup coroutine call */	1240	/* setup coroutine call */
836	setup_coro (aTHX_ next);	1241	coro_setup (aTHX_ next);
837	/* need a new stack */
838	assert (!next->cctx);
839	}	1242	}
840	else	1243	else
841	{
842	/* coroutine already started */
843	save_perl (aTHX_ prev);
844	load_perl (aTHX_ next);	1244	load_perl (aTHX_ next);
845	}
846		1245
847	prev__cctx = prev->cctx;	1246	prev__cctx = prev->cctx;
848		1247
849	/* possibly "free" the cctx */	1248	/* possibly "free" the cctx */
		1249	if (expect_true (
850	if (prev__cctx->idle_sp == STACKLEVEL)	1250	prev__cctx->idle_sp == STACKLEVEL
		1251	&& !(prev__cctx->flags & CC_TRACE)
		1252	&& !force_cctx
		1253	))
851	{	1254	{
852	/* I assume that STACKLEVEL is a stronger indicator than PL_top_env changes */	1255	/* I assume that STACKLEVEL is a stronger indicator than PL_top_env changes */
853	assert (("ERROR: current top_env must equal previous top_env", PL_top_env == prev__cctx->idle_te));	1256	assert (("ERROR: current top_env must equal previous top_env", PL_top_env == prev__cctx->idle_te));
854		1257
855	prev->cctx = 0;	1258	prev->cctx = 0;
856		1259
		1260	/* if the cctx is about to be destroyed we need to make sure we won't see it in cctx_get */
		1261	/* without this the next cctx_get might destroy the prev__cctx while still in use */
		1262	if (expect_false (CCTX_EXPIRED (prev__cctx)))
		1263	if (!next->cctx)
		1264	next->cctx = cctx_get (aTHX);
		1265
857	cctx_put (prev__cctx);	1266	cctx_put (prev__cctx);
858	prev__cctx->inuse = 0;
859	}	1267	}
860		1268
		1269	++next->usecount;
		1270
861	if (!next->cctx)	1271	if (expect_true (!next->cctx))
862	{
863	next->cctx = cctx_get (aTHX);	1272	next->cctx = cctx_get (aTHX);
864	assert (!next->cctx->inuse);
865	next->cctx->inuse = 1;
866	}
867		1273
		1274	has_throw = !!next->throw;
		1275
868	if (prev__cctx != next->cctx)	1276	if (expect_false (prev__cctx != next->cctx))
869	{	1277	{
870	prev__cctx->top_env = PL_top_env;	1278	prev__cctx->top_env = PL_top_env;
871	PL_top_env = next->cctx->top_env;	1279	PL_top_env = next->cctx->top_env;
872	coro_transfer (&prev__cctx->cctx, &next->cctx->cctx);	1280	coro_transfer (&prev__cctx->cctx, &next->cctx->cctx);
873	}	1281	}
874		1282
875	free_coro_mortal (aTHX);	1283	free_coro_mortal (aTHX);
876	UNLOCK;	1284	UNLOCK;
		1285
		1286	if (expect_false (has_throw))
		1287	{
		1288	struct coro *coro = SvSTATE (coro_current);
		1289
		1290	if (coro->throw)
		1291	{
		1292	SV *exception = coro->throw;
		1293	coro->throw = 0;
		1294	sv_setsv (ERRSV, exception);
		1295	croak (0);
		1296	}
		1297	}
877	}	1298	}
878	}	1299	}
879		1300
880	struct transfer_args	1301	struct transfer_args
881	{	1302	{
882	struct coro *prev, *next;	1303	struct coro *prev, *next;
883	};	1304	};
884		1305
		1306	#define TRANSFER(ta, force_cctx) transfer (aTHX_ (ta).prev, (ta).next, (force_cctx))
885	#define TRANSFER(ta) transfer (aTHX_ (ta).prev, (ta).next)	1307	#define TRANSFER_CHECK(ta) transfer_check (aTHX_ (ta).prev, (ta).next)
886		1308
887	/** high level stuff ********************************************************/	1309	/** high level stuff ********************************************************/
888		1310
889	static int	1311	static int
890	coro_state_destroy (pTHX_ struct coro *coro)	1312	coro_state_destroy (pTHX_ struct coro *coro)
…		…
907		1329
908	if (coro->mainstack && coro->mainstack != main_mainstack)	1330	if (coro->mainstack && coro->mainstack != main_mainstack)
909	{	1331	{
910	struct coro temp;	1332	struct coro temp;
911		1333
912	assert (!(coro->flags & CF_RUNNING));
913
914	Zero (&temp, 1, struct coro);
915	temp.save = CORO_SAVE_ALL;
916
917	if (coro->flags & CF_RUNNING)	1334	if (coro->flags & CF_RUNNING)
918	croak ("FATAL: tried to destroy currently running coroutine");	1335	croak ("FATAL: tried to destroy currently running coroutine");
919		1336
920	save_perl (aTHX_ &temp);	1337	save_perl (aTHX_ &temp);
921	load_perl (aTHX_ coro);	1338	load_perl (aTHX_ coro);
922		1339
923	coro_destroy_stacks (aTHX);	1340	coro_destroy (aTHX_ coro);
924		1341
925	load_perl (aTHX_ &temp); /* this will get rid of defsv etc.. */	1342	load_perl (aTHX_ &temp);
926		1343
927	coro->mainstack = 0;	1344	coro->slot = 0;
928	}	1345	}
929		1346
930	cctx_destroy (coro->cctx);	1347	cctx_destroy (coro->cctx);
931	SvREFCNT_dec (coro->args);	1348	SvREFCNT_dec (coro->args);
932		1349
…		…
973	#else	1390	#else
974	# define MGf_DUP 0	1391	# define MGf_DUP 0
975	#endif	1392	#endif
976	};	1393	};
977		1394
978	static struct coro *
979	SvSTATE_ (pTHX_ SV *coro)
980	{
981	HV *stash;
982	MAGIC *mg;
983
984	if (SvROK (coro))
985	coro = SvRV (coro);
986
987	stash = SvSTASH (coro);
988	if (stash != coro_stash && stash != coro_state_stash)
989	{
990	/* very slow, but rare, check */
991	if (!sv_derived_from (sv_2mortal (newRV_inc (coro)), "Coro::State"))
992	croak ("Coro::State object required");
993	}
994
995	mg = CORO_MAGIC (coro);
996	return (struct coro *)mg->mg_ptr;
997	}
998
999	#define SvSTATE(sv) SvSTATE_ (aTHX_ (sv))
1000
1001	static void	1395	static void
1002	prepare_transfer (pTHX_ struct transfer_args *ta, SV *prev_sv, SV *next_sv)	1396	prepare_transfer (pTHX_ struct transfer_args *ta, SV *prev_sv, SV *next_sv)
1003	{	1397	{
1004	ta->prev = SvSTATE (prev_sv);	1398	ta->prev = SvSTATE (prev_sv);
1005	ta->next = SvSTATE (next_sv);	1399	ta->next = SvSTATE (next_sv);
		1400	TRANSFER_CHECK (*ta);
1006	}	1401	}
1007		1402
1008	static void	1403	static void
1009	api_transfer (SV *prev_sv, SV *next_sv)	1404	api_transfer (SV *prev_sv, SV *next_sv)
1010	{	1405	{
1011	dTHX;	1406	dTHX;
1012	struct transfer_args ta;	1407	struct transfer_args ta;
1013		1408
1014	prepare_transfer (aTHX_ &ta, prev_sv, next_sv);	1409	prepare_transfer (aTHX_ &ta, prev_sv, next_sv);
1015	TRANSFER (ta);	1410	TRANSFER (ta, 1);
1016	}
1017
1018	static int
1019	api_save (SV *coro_sv, int new_save)
1020	{
1021	dTHX;
1022	struct coro *coro = SvSTATE (coro_sv);
1023	int old_save = coro->save;
1024
1025	if (new_save >= 0)
1026	coro->save = new_save;
1027
1028	return old_save;
1029	}	1411	}
1030		1412
1031	/** Coro ********************************************************************/	1413	/** Coro ********************************************************************/
1032		1414
1033	static void	1415	static void
…		…
1035	{	1417	{
1036	av_push (coro_ready [SvSTATE (coro_sv)->prio - PRIO_MIN], coro_sv);	1418	av_push (coro_ready [SvSTATE (coro_sv)->prio - PRIO_MIN], coro_sv);
1037	}	1419	}
1038		1420
1039	static SV *	1421	static SV *
1040	coro_deq (pTHX_ int min_prio)	1422	coro_deq (pTHX)
1041	{	1423	{
1042	int prio = PRIO_MAX - PRIO_MIN;	1424	int prio;
1043		1425
1044	min_prio -= PRIO_MIN;
1045	if (min_prio < 0)
1046	min_prio = 0;
1047
1048	for (prio = PRIO_MAX - PRIO_MIN + 1; --prio >= min_prio; )	1426	for (prio = PRIO_MAX - PRIO_MIN + 1; --prio >= 0; )
1049	if (AvFILLp (coro_ready [prio]) >= 0)	1427	if (AvFILLp (coro_ready [prio]) >= 0)
1050	return av_shift (coro_ready [prio]);	1428	return av_shift (coro_ready [prio]);
1051		1429
1052	return 0;	1430	return 0;
1053	}	1431	}
…		…
1055	static int	1433	static int
1056	api_ready (SV *coro_sv)	1434	api_ready (SV *coro_sv)
1057	{	1435	{
1058	dTHX;	1436	dTHX;
1059	struct coro *coro;	1437	struct coro *coro;
		1438	SV *sv_hook;
		1439	void (*xs_hook)(void);
1060		1440
1061	if (SvROK (coro_sv))	1441	if (SvROK (coro_sv))
1062	coro_sv = SvRV (coro_sv);	1442	coro_sv = SvRV (coro_sv);
1063		1443
1064	coro = SvSTATE (coro_sv);	1444	coro = SvSTATE (coro_sv);
…		…
1067	return 0;	1447	return 0;
1068		1448
1069	coro->flags |= CF_READY;	1449	coro->flags |= CF_READY;
1070		1450
1071	LOCK;	1451	LOCK;
		1452
		1453	sv_hook = coro_nready ? 0 : coro_readyhook;
		1454	xs_hook = coro_nready ? 0 : coroapi.readyhook;
		1455
1072	coro_enq (aTHX_ SvREFCNT_inc (coro_sv));	1456	coro_enq (aTHX_ SvREFCNT_inc_NN (coro_sv));
1073	++coro_nready;	1457	++coro_nready;
		1458
1074	UNLOCK;	1459	UNLOCK;
		1460
		1461	if (sv_hook)
		1462	{
		1463	dSP;
		1464
		1465	ENTER;
		1466	SAVETMPS;
		1467
		1468	PUSHMARK (SP);
		1469	PUTBACK;
		1470	call_sv (sv_hook, G_DISCARD);
		1471	SPAGAIN;
		1472
		1473	FREETMPS;
		1474	LEAVE;
		1475	}
		1476
		1477	if (xs_hook)
		1478	xs_hook ();
1075		1479
1076	return 1;	1480	return 1;
1077	}	1481	}
1078		1482
1079	static int	1483	static int
…		…
1089	SV *prev_sv, *next_sv;	1493	SV *prev_sv, *next_sv;
1090		1494
1091	for (;;)	1495	for (;;)
1092	{	1496	{
1093	LOCK;	1497	LOCK;
1094	next_sv = coro_deq (aTHX_ PRIO_MIN);	1498	next_sv = coro_deq (aTHX);
1095		1499
1096	/* nothing to schedule: call the idle handler */	1500	/* nothing to schedule: call the idle handler */
1097	if (!next_sv)	1501	if (expect_false (!next_sv))
1098	{	1502	{
1099	dSP;	1503	dSP;
1100	UNLOCK;	1504	UNLOCK;
1101		1505
1102	ENTER;	1506	ENTER;
1103	SAVETMPS;	1507	SAVETMPS;
1104		1508
1105	PUSHMARK (SP);	1509	PUSHMARK (SP);
1106	PUTBACK;	1510	PUTBACK;
1107	call_sv (get_sv ("Coro::idle", FALSE), G_DISCARD);	1511	call_sv (get_sv ("Coro::idle", FALSE), G_DISCARD);
		1512	SPAGAIN;
1108		1513
1109	FREETMPS;	1514	FREETMPS;
1110	LEAVE;	1515	LEAVE;
1111	continue;	1516	continue;
1112	}	1517	}
1113		1518
1114	ta->next = SvSTATE (next_sv);	1519	ta->next = SvSTATE (next_sv);
1115		1520
1116	/* cannot transfer to destroyed coros, skip and look for next */	1521	/* cannot transfer to destroyed coros, skip and look for next */
1117	if (ta->next->flags & CF_DESTROYED)	1522	if (expect_false (ta->next->flags & CF_DESTROYED))
1118	{	1523	{
1119	UNLOCK;	1524	UNLOCK;
1120	SvREFCNT_dec (next_sv);	1525	SvREFCNT_dec (next_sv);
1121	/* coro_nready is already taken care of by destroy */	1526	/* coro_nready is already taken care of by destroy */
1122	continue;	1527	continue;
…		…
1127	break;	1532	break;
1128	}	1533	}
1129		1534
1130	/* free this only after the transfer */	1535	/* free this only after the transfer */
1131	prev_sv = SvRV (coro_current);	1536	prev_sv = SvRV (coro_current);
1132	SvRV_set (coro_current, next_sv);
1133	ta->prev = SvSTATE (prev_sv);	1537	ta->prev = SvSTATE (prev_sv);
1134		1538	TRANSFER_CHECK (*ta);
1135	assert (ta->next->flags & CF_READY);	1539	assert (ta->next->flags & CF_READY);
1136	ta->next->flags &= ~CF_READY;	1540	ta->next->flags &= ~CF_READY;
		1541	SvRV_set (coro_current, next_sv);
1137		1542
1138	LOCK;	1543	LOCK;
1139	free_coro_mortal (aTHX);	1544	free_coro_mortal (aTHX);
1140	coro_mortal = prev_sv;	1545	coro_mortal = prev_sv;
1141	UNLOCK;	1546	UNLOCK;
…		…
1167	{	1572	{
1168	dTHX;	1573	dTHX;
1169	struct transfer_args ta;	1574	struct transfer_args ta;
1170		1575
1171	prepare_schedule (aTHX_ &ta);	1576	prepare_schedule (aTHX_ &ta);
1172	TRANSFER (ta);	1577	TRANSFER (ta, 1);
1173	}	1578	}
1174		1579
1175	static int	1580	static int
1176	api_cede (void)	1581	api_cede (void)
1177	{	1582	{
1178	dTHX;	1583	dTHX;
1179	struct transfer_args ta;	1584	struct transfer_args ta;
1180		1585
1181	prepare_cede (aTHX_ &ta);	1586	prepare_cede (aTHX_ &ta);
1182		1587
1183	if (ta.prev != ta.next)	1588	if (expect_true (ta.prev != ta.next))
1184	{	1589	{
1185	TRANSFER (ta);	1590	TRANSFER (ta, 1);
1186	return 1;	1591	return 1;
1187	}	1592	}
1188	else	1593	else
1189	return 0;	1594	return 0;
1190	}	1595	}
…		…
1195	dTHX;	1600	dTHX;
1196	struct transfer_args ta;	1601	struct transfer_args ta;
1197		1602
1198	if (prepare_cede_notself (aTHX_ &ta))	1603	if (prepare_cede_notself (aTHX_ &ta))
1199	{	1604	{
1200	TRANSFER (ta);	1605	TRANSFER (ta, 1);
1201	return 1;	1606	return 1;
1202	}	1607	}
1203	else	1608	else
1204	return 0;	1609	return 0;
1205	}	1610	}
1206		1611
		1612	static void
		1613	api_trace (SV *coro_sv, int flags)
		1614	{
		1615	dTHX;
		1616	struct coro *coro = SvSTATE (coro_sv);
		1617
		1618	if (flags & CC_TRACE)
		1619	{
		1620	if (!coro->cctx)
		1621	coro->cctx = cctx_new ();
		1622	else if (!(coro->cctx->flags & CC_TRACE))
		1623	croak ("cannot enable tracing on coroutine with custom stack");
		1624
		1625	coro->cctx->flags |= CC_NOREUSE | (flags & (CC_TRACE | CC_TRACE_ALL));
		1626	}
		1627	else if (coro->cctx && coro->cctx->flags & CC_TRACE)
		1628	{
		1629	coro->cctx->flags &= ~(CC_TRACE | CC_TRACE_ALL);
		1630
		1631	if (coro->flags & CF_RUNNING)
		1632	PL_runops = RUNOPS_DEFAULT;
		1633	else
		1634	coro->slot->runops = RUNOPS_DEFAULT;
		1635	}
		1636	}
		1637
		1638	static int
		1639	coro_gensub_free (pTHX_ SV *sv, MAGIC *mg)
		1640	{
		1641	AV *padlist;
		1642	AV *av = (AV *)mg->mg_obj;
		1643
		1644	abort ();
		1645
		1646	return 0;
		1647	}
		1648
		1649	static MGVTBL coro_gensub_vtbl = {
		1650	0, 0, 0, 0,
		1651	coro_gensub_free
		1652	};
		1653
		1654	/*****************************************************************************/
		1655	/* PerlIO::cede */
		1656
		1657	typedef struct
		1658	{
		1659	PerlIOBuf base;
		1660	NV next, every;
		1661	} PerlIOCede;
		1662
		1663	static IV
		1664	PerlIOCede_pushed (pTHX_ PerlIO *f, const char *mode, SV *arg, PerlIO_funcs *tab)
		1665	{
		1666	PerlIOCede *self = PerlIOSelf (f, PerlIOCede);
		1667
		1668	self->every = SvCUR (arg) ? SvNV (arg) : 0.01;
		1669	self->next = nvtime () + self->every;
		1670
		1671	return PerlIOBuf_pushed (aTHX_ f, mode, Nullsv, tab);
		1672	}
		1673
		1674	static SV *
		1675	PerlIOCede_getarg (pTHX_ PerlIO *f, CLONE_PARAMS *param, int flags)
		1676	{
		1677	PerlIOCede *self = PerlIOSelf (f, PerlIOCede);
		1678
		1679	return newSVnv (self->every);
		1680	}
		1681
		1682	static IV
		1683	PerlIOCede_flush (pTHX_ PerlIO *f)
		1684	{
		1685	PerlIOCede *self = PerlIOSelf (f, PerlIOCede);
		1686	double now = nvtime ();
		1687
		1688	if (now >= self->next)
		1689	{
		1690	api_cede ();
		1691	self->next = now + self->every;
		1692	}
		1693
		1694	return PerlIOBuf_flush (aTHX_ f);
		1695	}
		1696
		1697	static PerlIO_funcs PerlIO_cede =
		1698	{
		1699	sizeof(PerlIO_funcs),
		1700	"cede",
		1701	sizeof(PerlIOCede),
		1702	PERLIO_K_DESTRUCT | PERLIO_K_RAW,
		1703	PerlIOCede_pushed,
		1704	PerlIOBuf_popped,
		1705	PerlIOBuf_open,
		1706	PerlIOBase_binmode,
		1707	PerlIOCede_getarg,
		1708	PerlIOBase_fileno,
		1709	PerlIOBuf_dup,
		1710	PerlIOBuf_read,
		1711	PerlIOBuf_unread,
		1712	PerlIOBuf_write,
		1713	PerlIOBuf_seek,
		1714	PerlIOBuf_tell,
		1715	PerlIOBuf_close,
		1716	PerlIOCede_flush,
		1717	PerlIOBuf_fill,
		1718	PerlIOBase_eof,
		1719	PerlIOBase_error,
		1720	PerlIOBase_clearerr,
		1721	PerlIOBase_setlinebuf,
		1722	PerlIOBuf_get_base,
		1723	PerlIOBuf_bufsiz,
		1724	PerlIOBuf_get_ptr,
		1725	PerlIOBuf_get_cnt,
		1726	PerlIOBuf_set_ptrcnt,
		1727	};
		1728
		1729
1207	MODULE = Coro::State PACKAGE = Coro::State	1730	MODULE = Coro::State PACKAGE = Coro::State PREFIX = api_
1208		1731
1209	PROTOTYPES: DISABLE	1732	PROTOTYPES: DISABLE
1210		1733
1211	BOOT:	1734	BOOT:
1212	{	1735	{
1213	#ifdef USE_ITHREADS	1736	#ifdef USE_ITHREADS
1214	MUTEX_INIT (&coro_mutex);	1737	MUTEX_INIT (&coro_mutex);
1215	#endif	1738	#endif
1216	BOOT_PAGESIZE;	1739	BOOT_PAGESIZE;
1217		1740
		1741	irsgv = gv_fetchpv ("/" , GV_ADD|GV_NOTQUAL, SVt_PV);
		1742	stdoutgv = gv_fetchpv ("STDOUT", GV_ADD|GV_NOTQUAL, SVt_PVIO);
		1743
		1744	orig_sigelem_get = PL_vtbl_sigelem.svt_get; PL_vtbl_sigelem.svt_get = coro_sigelem_get;
		1745	orig_sigelem_set = PL_vtbl_sigelem.svt_set; PL_vtbl_sigelem.svt_set = coro_sigelem_set;
		1746	orig_sigelem_clr = PL_vtbl_sigelem.svt_clear; PL_vtbl_sigelem.svt_clear = coro_sigelem_clr;
		1747
		1748	hv_sig = coro_get_hv (aTHX_ "SIG", TRUE);
		1749	rv_diehook = newRV_inc ((SV *)gv_fetchpv ("Coro::State::diehook" , 0, SVt_PVCV));
		1750	rv_warnhook = newRV_inc ((SV *)gv_fetchpv ("Coro::State::warnhook", 0, SVt_PVCV));
		1751
1218	coro_state_stash = gv_stashpv ("Coro::State", TRUE);	1752	coro_state_stash = gv_stashpv ("Coro::State", TRUE);
1219		1753
1220	newCONSTSUB (coro_state_stash, "SAVE_DEFAV", newSViv (CORO_SAVE_DEFAV));	1754	newCONSTSUB (coro_state_stash, "CC_TRACE" , newSViv (CC_TRACE));
1221	newCONSTSUB (coro_state_stash, "SAVE_DEFSV", newSViv (CORO_SAVE_DEFSV));	1755	newCONSTSUB (coro_state_stash, "CC_TRACE_SUB" , newSViv (CC_TRACE_SUB));
1222	newCONSTSUB (coro_state_stash, "SAVE_ERRSV", newSViv (CORO_SAVE_ERRSV));
1223	newCONSTSUB (coro_state_stash, "SAVE_IRSSV", newSViv (CORO_SAVE_IRSSV));
1224	newCONSTSUB (coro_state_stash, "SAVE_DEFFH", newSViv (CORO_SAVE_DEFFH));
1225	newCONSTSUB (coro_state_stash, "SAVE_DEF", newSViv (CORO_SAVE_DEF));	1756	newCONSTSUB (coro_state_stash, "CC_TRACE_LINE", newSViv (CC_TRACE_LINE));
1226	newCONSTSUB (coro_state_stash, "SAVE_ALL", newSViv (CORO_SAVE_ALL));	1757	newCONSTSUB (coro_state_stash, "CC_TRACE_ALL" , newSViv (CC_TRACE_ALL));
1227		1758
1228	main_mainstack = PL_mainstack;	1759	main_mainstack = PL_mainstack;
1229	main_top_env = PL_top_env;	1760	main_top_env = PL_top_env;
1230		1761
1231	while (main_top_env->je_prev)	1762	while (main_top_env->je_prev)
1232	main_top_env = main_top_env->je_prev;	1763	main_top_env = main_top_env->je_prev;
1233		1764
1234	coroapi.ver = CORO_API_VERSION;	1765	coroapi.ver = CORO_API_VERSION;
		1766	coroapi.rev = CORO_API_REVISION;
1235	coroapi.transfer = api_transfer;	1767	coroapi.transfer = api_transfer;
		1768
		1769	{
		1770	SV **svp = hv_fetch (PL_modglobal, "Time::NVtime", 12, 0);
		1771
		1772	if (!svp) croak ("Time::HiRes is required");
		1773	if (!SvIOK (*svp)) croak ("Time::NVtime isn't a function pointer");
		1774
		1775	nvtime = INT2PTR (double (*)(), SvIV (*svp));
		1776	}
1236		1777
1237	assert (("PRIO_NORMAL must be 0", !PRIO_NORMAL));	1778	assert (("PRIO_NORMAL must be 0", !PRIO_NORMAL));
1238	}	1779	}
1239		1780
1240	SV *	1781	SV *
1241	new (char *klass, ...)	1782	new (char *klass, ...)
1242	CODE:	1783	CODE:
1243	{	1784	{
1244	struct coro *coro;	1785	struct coro *coro;
		1786	MAGIC *mg;
1245	HV *hv;	1787	HV *hv;
1246	int i;	1788	int i;
1247		1789
1248	Newz (0, coro, 1, struct coro);	1790	Newz (0, coro, 1, struct coro);
1249	coro->args = newAV ();	1791	coro->args = newAV ();
1250	coro->save = CORO_SAVE_DEF;
1251	coro->flags = CF_NEW;	1792	coro->flags = CF_NEW;
1252		1793
1253	if (coro_first) coro_first->prev = coro;	1794	if (coro_first) coro_first->prev = coro;
1254	coro->next = coro_first;	1795	coro->next = coro_first;
1255	coro_first = coro;	1796	coro_first = coro;
1256		1797
1257	coro->hv = hv = newHV ();	1798	coro->hv = hv = newHV ();
1258	sv_magicext ((SV *)hv, 0, PERL_MAGIC_ext, &coro_state_vtbl, (char *)coro, 0)->mg_flags |= MGf_DUP;	1799	mg = sv_magicext ((SV *)hv, 0, CORO_MAGIC_type_state, &coro_state_vtbl, (char *)coro, 0);
		1800	mg->mg_flags |= MGf_DUP;
1259	RETVAL = sv_bless (newRV_noinc ((SV *)hv), gv_stashpv (klass, 1));	1801	RETVAL = sv_bless (newRV_noinc ((SV *)hv), gv_stashpv (klass, 1));
1260		1802
		1803	av_extend (coro->args, items - 1);
1261	for (i = 1; i < items; i++)	1804	for (i = 1; i < items; i++)
1262	av_push (coro->args, newSVsv (ST (i)));	1805	av_push (coro->args, newSVsv (ST (i)));
1263	}	1806	}
1264	OUTPUT:	1807	OUTPUT:
1265	RETVAL	1808	RETVAL
1266		1809
1267	int	1810	# these not obviously related functions are all rolled into the same xs
1268	save (SV *coro, int new_save = -1)	1811	# function to increase chances that they all will call transfer with the same
1269	CODE:	1812	# stack offset
1270	RETVAL = api_save (coro, new_save);
1271	OUTPUT:
1272	RETVAL
1273
1274	int
1275	save_also (SV *coro_sv, int save_also)
1276	CODE:
1277	{
1278	struct coro *coro = SvSTATE (coro_sv);
1279	RETVAL = coro->save;
1280	coro->save |= save_also;
1281	}
1282	OUTPUT:
1283	RETVAL
1284
1285	void	1813	void
1286	_set_stacklevel (...)	1814	_set_stacklevel (...)
1287	ALIAS:	1815	ALIAS:
1288	Coro::State::transfer = 1	1816	Coro::State::transfer = 1
1289	Coro::schedule = 2	1817	Coro::schedule = 2
…		…
1291	Coro::cede_notself = 4	1819	Coro::cede_notself = 4
1292	CODE:	1820	CODE:
1293	{	1821	{
1294	struct transfer_args ta;	1822	struct transfer_args ta;
1295		1823
		1824	PUTBACK;
1296	switch (ix)	1825	switch (ix)
1297	{	1826	{
1298	case 0:	1827	case 0:
1299	ta.prev = (struct coro *)INT2PTR (coro_cctx *, SvIV (ST (0)));	1828	ta.prev = (struct coro *)INT2PTR (coro_cctx *, SvIV (ST (0)));
1300	ta.next = 0;	1829	ta.next = 0;
…		…
1319	if (!prepare_cede_notself (aTHX_ &ta))	1848	if (!prepare_cede_notself (aTHX_ &ta))
1320	XSRETURN_EMPTY;	1849	XSRETURN_EMPTY;
1321		1850
1322	break;	1851	break;
1323	}	1852	}
		1853	SPAGAIN;
1324		1854
1325	BARRIER;	1855	BARRIER;
		1856	PUTBACK;
1326	TRANSFER (ta);	1857	TRANSFER (ta, 0);
1327		1858	SPAGAIN; /* might be the sp of a different coroutine now */
1328	if (GIMME_V != G_VOID && ta.next != ta.prev)	1859	/* be extra careful not to ever do anything after TRANSFER */
1329	XSRETURN_YES;
1330	}	1860	}
1331		1861
1332	bool	1862	bool
1333	_destroy (SV *coro_sv)	1863	_destroy (SV *coro_sv)
1334	CODE:	1864	CODE:
1335	RETVAL = coro_state_destroy (aTHX_ SvSTATE (coro_sv));	1865	RETVAL = coro_state_destroy (aTHX_ SvSTATE (coro_sv));
1336	OUTPUT:	1866	OUTPUT:
1337	RETVAL	1867	RETVAL
1338		1868
1339	void	1869	void
1340	_exit (code)	1870	_exit (int code)
1341	int code
1342	PROTOTYPE: $	1871	PROTOTYPE: $
1343	CODE:	1872	CODE:
1344	_exit (code);	1873	_exit (code);
1345		1874
1346	int	1875	int
…		…
1375	if (coro->hv)	1904	if (coro->hv)
1376	XPUSHs (sv_2mortal (newRV_inc ((SV *)coro->hv)));	1905	XPUSHs (sv_2mortal (newRV_inc ((SV *)coro->hv)));
1377	}	1906	}
1378		1907
1379	void	1908	void
1380	_eval (Coro::State coro, SV *coderef)	1909	call (Coro::State coro, SV *coderef)
		1910	ALIAS:
		1911	eval = 1
1381	CODE:	1912	CODE:
1382	{	1913	{
1383	if (coro->mainstack)	1914	if (coro->mainstack && ((coro->flags & CF_RUNNING) || coro->slot))
1384	{	1915	{
1385	struct coro temp;	1916	struct coro temp;
1386	Zero (&temp, 1, struct coro);
1387	temp.save = CORO_SAVE_ALL;
1388		1917
1389	if (!(coro->flags & CF_RUNNING))	1918	if (!(coro->flags & CF_RUNNING))
1390	{	1919	{
		1920	PUTBACK;
1391	save_perl (aTHX_ &temp);	1921	save_perl (aTHX_ &temp);
1392	load_perl (aTHX_ coro);	1922	load_perl (aTHX_ coro);
1393	}	1923	}
1394		1924
1395	{	1925	{
1396	dSP;	1926	dSP;
1397	ENTER;	1927	ENTER;
1398	SAVETMPS;	1928	SAVETMPS;
		1929	PUTBACK;
		1930	PUSHSTACK;
1399	PUSHMARK (SP);	1931	PUSHMARK (SP);
1400	PUTBACK;	1932
		1933	if (ix)
		1934	eval_sv (coderef, 0);
		1935	else
1401	call_sv (coderef, G_KEEPERR | G_EVAL | G_VOID | G_DISCARD);	1936	call_sv (coderef, G_KEEPERR | G_EVAL | G_VOID | G_DISCARD);
		1937
		1938	POPSTACK;
1402	SPAGAIN;	1939	SPAGAIN;
1403	FREETMPS;	1940	FREETMPS;
1404	LEAVE;	1941	LEAVE;
1405	PUTBACK;	1942	PUTBACK;
1406	}	1943	}
1407		1944
1408	if (!(coro->flags & CF_RUNNING))	1945	if (!(coro->flags & CF_RUNNING))
1409	{	1946	{
1410	save_perl (aTHX_ coro);	1947	save_perl (aTHX_ coro);
1411	load_perl (aTHX_ &temp);	1948	load_perl (aTHX_ &temp);
		1949	SPAGAIN;
1412	}	1950	}
1413	}	1951	}
1414	}	1952	}
1415		1953
1416	SV *	1954	SV *
1417	is_ready (Coro::State coro)	1955	is_ready (Coro::State coro)
1418	PROTOTYPE: $	1956	PROTOTYPE: $
1419	ALIAS:	1957	ALIAS:
1420	is_ready = CF_READY	1958	is_ready = CF_READY
…		…
1424	CODE:	1962	CODE:
1425	RETVAL = boolSV (coro->flags & ix);	1963	RETVAL = boolSV (coro->flags & ix);
1426	OUTPUT:	1964	OUTPUT:
1427	RETVAL	1965	RETVAL
1428		1966
		1967	void
		1968	api_trace (SV *coro, int flags = CC_TRACE | CC_TRACE_SUB)
		1969
		1970	SV *
		1971	has_cctx (Coro::State coro)
		1972	PROTOTYPE: $
		1973	CODE:
		1974	RETVAL = boolSV (!!coro->cctx);
		1975	OUTPUT:
		1976	RETVAL
		1977
		1978	int
		1979	is_traced (Coro::State coro)
		1980	PROTOTYPE: $
		1981	CODE:
		1982	RETVAL = (coro->cctx ? coro->cctx->flags : 0) & CC_TRACE_ALL;
		1983	OUTPUT:
		1984	RETVAL
		1985
1429	IV	1986	IV
1430	rss (Coro::State coro)	1987	rss (Coro::State coro)
1431	PROTOTYPE: $	1988	PROTOTYPE: $
		1989	ALIAS:
		1990	usecount = 1
1432	CODE:	1991	CODE:
1433	RETVAL = coro_rss (coro);	1992	switch (ix)
		1993	{
		1994	case 0: RETVAL = coro_rss (aTHX_ coro); break;
		1995	case 1: RETVAL = coro->usecount; break;
		1996	}
1434	OUTPUT:	1997	OUTPUT:
1435	RETVAL	1998	RETVAL
1436		1999
		2000	void
		2001	force_cctx ()
		2002	CODE:
		2003	struct coro *coro = SvSTATE (coro_current);
		2004	coro->cctx->idle_sp = 0;
		2005
		2006	void
		2007	throw (Coro::State self, SV *throw = &PL_sv_undef)
		2008	PROTOTYPE: $;$
		2009	CODE:
		2010	SvREFCNT_dec (self->throw);
		2011	self->throw = SvOK (throw) ? newSVsv (throw) : 0;
		2012
		2013	void
		2014	swap_defsv (Coro::State self)
		2015	PROTOTYPE: $
		2016	ALIAS:
		2017	swap_defav = 1
		2018	CODE:
		2019	if (!self->slot)
		2020	croak ("cannot swap state with coroutine that has no saved state");
		2021	else
		2022	{
		2023	SV **src = ix ? (SV **)&GvAV (PL_defgv) : &GvSV (PL_defgv);
		2024	SV **dst = ix ? (SV **)&self->slot->defav : (SV **)&self->slot->defsv;
		2025
		2026	SV *tmp = *src; *src = *dst; *dst = tmp;
		2027	}
1437		2028
1438	MODULE = Coro::State PACKAGE = Coro	2029	MODULE = Coro::State PACKAGE = Coro
1439		2030
1440	BOOT:	2031	BOOT:
1441	{	2032	{
1442	int i;	2033	int i;
1443		2034
		2035	av_async_pool = coro_get_av (aTHX_ "Coro::async_pool", TRUE);
		2036	sv_pool_rss = coro_get_sv (aTHX_ "Coro::POOL_RSS" , TRUE);
		2037	sv_pool_size = coro_get_sv (aTHX_ "Coro::POOL_SIZE" , TRUE);
		2038
		2039	coro_current = coro_get_sv (aTHX_ "Coro::current", FALSE);
		2040	SvREADONLY_on (coro_current);
		2041
1444	coro_stash = gv_stashpv ("Coro", TRUE);	2042	coro_stash = gv_stashpv ("Coro", TRUE);
1445		2043
1446	newCONSTSUB (coro_stash, "PRIO_MAX", newSViv (PRIO_MAX));	2044	newCONSTSUB (coro_stash, "PRIO_MAX", newSViv (PRIO_MAX));
1447	newCONSTSUB (coro_stash, "PRIO_HIGH", newSViv (PRIO_HIGH));	2045	newCONSTSUB (coro_stash, "PRIO_HIGH", newSViv (PRIO_HIGH));
1448	newCONSTSUB (coro_stash, "PRIO_NORMAL", newSViv (PRIO_NORMAL));	2046	newCONSTSUB (coro_stash, "PRIO_NORMAL", newSViv (PRIO_NORMAL));
1449	newCONSTSUB (coro_stash, "PRIO_LOW", newSViv (PRIO_LOW));	2047	newCONSTSUB (coro_stash, "PRIO_LOW", newSViv (PRIO_LOW));
1450	newCONSTSUB (coro_stash, "PRIO_IDLE", newSViv (PRIO_IDLE));	2048	newCONSTSUB (coro_stash, "PRIO_IDLE", newSViv (PRIO_IDLE));
1451	newCONSTSUB (coro_stash, "PRIO_MIN", newSViv (PRIO_MIN));	2049	newCONSTSUB (coro_stash, "PRIO_MIN", newSViv (PRIO_MIN));
1452		2050
1453	coro_current = get_sv ("Coro::current", FALSE);
1454	SvREADONLY_on (coro_current);
1455
1456	for (i = PRIO_MAX - PRIO_MIN + 1; i--; )	2051	for (i = PRIO_MAX - PRIO_MIN + 1; i--; )
1457	coro_ready[i] = newAV ();	2052	coro_ready[i] = newAV ();
1458		2053
1459	{	2054	{
1460	SV *sv = perl_get_sv("Coro::API", 1);	2055	SV *sv = perl_get_sv ("Coro::API", TRUE);
		2056	perl_get_sv ("Coro::API", TRUE); /* silence 5.10 warning */
1461		2057
1462	coroapi.schedule = api_schedule;	2058	coroapi.schedule = api_schedule;
1463	coroapi.save = api_save;
1464	coroapi.cede = api_cede;	2059	coroapi.cede = api_cede;
1465	coroapi.cede_notself = api_cede_notself;	2060	coroapi.cede_notself = api_cede_notself;
1466	coroapi.ready = api_ready;	2061	coroapi.ready = api_ready;
1467	coroapi.is_ready = api_is_ready;	2062	coroapi.is_ready = api_is_ready;
1468	coroapi.nready = &coro_nready;	2063	coroapi.nready = &coro_nready;
…		…
1477	void	2072	void
1478	_set_current (SV *current)	2073	_set_current (SV *current)
1479	PROTOTYPE: $	2074	PROTOTYPE: $
1480	CODE:	2075	CODE:
1481	SvREFCNT_dec (SvRV (coro_current));	2076	SvREFCNT_dec (SvRV (coro_current));
1482	SvRV_set (coro_current, SvREFCNT_inc (SvRV (current)));	2077	SvRV_set (coro_current, SvREFCNT_inc_NN (SvRV (current)));
		2078
		2079	void
		2080	_set_readyhook (SV *hook)
		2081	PROTOTYPE: $
		2082	CODE:
		2083	LOCK;
		2084	SvREFCNT_dec (coro_readyhook);
		2085	coro_readyhook = SvOK (hook) ? newSVsv (hook) : 0;
		2086	UNLOCK;
1483		2087
1484	int	2088	int
1485	prio (Coro::State coro, int newprio = 0)	2089	prio (Coro::State coro, int newprio = 0)
1486	ALIAS:	2090	ALIAS:
1487	nice = 1	2091	nice = 1
…		…
1517	CODE:	2121	CODE:
1518	RETVAL = coro_nready;	2122	RETVAL = coro_nready;
1519	OUTPUT:	2123	OUTPUT:
1520	RETVAL	2124	RETVAL
1521		2125
		2126	# for async_pool speedup
		2127	void
		2128	_pool_1 (SV *cb)
		2129	CODE:
		2130	{
		2131	struct coro *coro = SvSTATE (coro_current);
		2132	HV *hv = (HV *)SvRV (coro_current);
		2133	AV *defav = GvAV (PL_defgv);
		2134	SV *invoke = hv_delete (hv, "_invoke", sizeof ("_invoke") - 1, 0);
		2135	AV *invoke_av;
		2136	int i, len;
		2137
		2138	if (!invoke)
		2139	{
		2140	SV *old = PL_diehook;
		2141	PL_diehook = 0;
		2142	SvREFCNT_dec (old);
		2143	croak ("\3async_pool terminate\2\n");
		2144	}
		2145
		2146	SvREFCNT_dec (coro->saved_deffh);
		2147	coro->saved_deffh = SvREFCNT_inc_NN ((SV *)PL_defoutgv);
		2148
		2149	hv_store (hv, "desc", sizeof ("desc") - 1,
		2150	newSVpvn ("[async_pool]", sizeof ("[async_pool]") - 1), 0);
		2151
		2152	invoke_av = (AV *)SvRV (invoke);
		2153	len = av_len (invoke_av);
		2154
		2155	sv_setsv (cb, AvARRAY (invoke_av)[0]);
		2156
		2157	if (len > 0)
		2158	{
		2159	av_fill (defav, len - 1);
		2160	for (i = 0; i < len; ++i)
		2161	av_store (defav, i, SvREFCNT_inc_NN (AvARRAY (invoke_av)[i + 1]));
		2162	}
		2163
		2164	SvREFCNT_dec (invoke);
		2165	}
		2166
		2167	void
		2168	_pool_2 (SV *cb)
		2169	CODE:
		2170	{
		2171	struct coro *coro = SvSTATE (coro_current);
		2172
		2173	sv_setsv (cb, &PL_sv_undef);
		2174
		2175	SvREFCNT_dec ((SV *)PL_defoutgv); PL_defoutgv = (GV *)coro->saved_deffh;
		2176	coro->saved_deffh = 0;
		2177
		2178	if (coro_rss (aTHX_ coro) > SvIV (sv_pool_rss)
		2179	|| av_len (av_async_pool) + 1 >= SvIV (sv_pool_size))
		2180	{
		2181	SV *old = PL_diehook;
		2182	PL_diehook = 0;
		2183	SvREFCNT_dec (old);
		2184	croak ("\3async_pool terminate\2\n");
		2185	}
		2186
		2187	av_clear (GvAV (PL_defgv));
		2188	hv_store ((HV *)SvRV (coro_current), "desc", sizeof ("desc") - 1,
		2189	newSVpvn ("[async_pool idle]", sizeof ("[async_pool idle]") - 1), 0);
		2190
		2191	coro->prio = 0;
		2192
		2193	if (coro->cctx && (coro->cctx->flags & CC_TRACE))
		2194	api_trace (coro_current, 0);
		2195
		2196	av_push (av_async_pool, newSVsv (coro_current));
		2197	}
		2198
		2199	#if 0
		2200
		2201	void
		2202	_generator_call (...)
		2203	PROTOTYPE: @
		2204	PPCODE:
		2205	fprintf (stderr, "call %p\n", CvXSUBANY(cv).any_ptr);
		2206	xxxx
		2207	abort ();
		2208
		2209	SV *
		2210	gensub (SV *sub, ...)
		2211	PROTOTYPE: &;@
		2212	CODE:
		2213	{
		2214	struct coro *coro;
		2215	MAGIC *mg;
		2216	CV *xcv;
		2217	CV *ncv = (CV *)newSV_type (SVt_PVCV);
		2218	int i;
		2219
		2220	CvGV (ncv) = CvGV (cv);
		2221	CvFILE (ncv) = CvFILE (cv);
		2222
		2223	Newz (0, coro, 1, struct coro);
		2224	coro->args = newAV ();
		2225	coro->flags = CF_NEW;
		2226
		2227	av_extend (coro->args, items - 1);
		2228	for (i = 1; i < items; i++)
		2229	av_push (coro->args, newSVsv (ST (i)));
		2230
		2231	CvISXSUB_on (ncv);
		2232	CvXSUBANY (ncv).any_ptr = (void *)coro;
		2233
		2234	xcv = GvCV (gv_fetchpv ("Coro::_generator_call", 0, SVt_PVCV));
		2235
		2236	CvXSUB (ncv) = CvXSUB (xcv);
		2237	CvANON_on (ncv);
		2238
		2239	mg = sv_magicext ((SV *)ncv, 0, CORO_MAGIC_type_state, &coro_gensub_vtbl, (char *)coro, 0);
		2240	RETVAL = newRV_noinc ((SV *)ncv);
		2241	}
		2242	OUTPUT:
		2243	RETVAL
		2244
		2245	#endif
		2246
		2247
1522	MODULE = Coro::State PACKAGE = Coro::AIO	2248	MODULE = Coro::State PACKAGE = Coro::AIO
1523		2249
1524	SV *	2250	void
1525	_get_state ()	2251	_get_state (SV *self)
1526	CODE:	2252	PPCODE:
1527	{	2253	{
1528	struct io_state *data;	2254	AV *defav = GvAV (PL_defgv);
1529		2255	AV *av = newAV ();
		2256	int i;
1530	RETVAL = newSV (sizeof (struct io_state));	2257	SV *data_sv = newSV (sizeof (struct io_state));
1531	data = (struct io_state *)SvPVX (RETVAL);	2258	struct io_state *data = (struct io_state *)SvPVX (data_sv);
1532	SvCUR_set (RETVAL, sizeof (struct io_state));	2259	SvCUR_set (data_sv, sizeof (struct io_state));
1533	SvPOK_only (RETVAL);	2260	SvPOK_only (data_sv);
1534		2261
1535	data->errorno = errno;	2262	data->errorno = errno;
1536	data->laststype = PL_laststype;	2263	data->laststype = PL_laststype;
1537	data->laststatval = PL_laststatval;	2264	data->laststatval = PL_laststatval;
1538	data->statcache = PL_statcache;	2265	data->statcache = PL_statcache;
		2266
		2267	av_extend (av, AvFILLp (defav) + 1 + 1);
		2268
		2269	for (i = 0; i <= AvFILLp (defav); ++i)
		2270	av_push (av, SvREFCNT_inc_NN (AvARRAY (defav)[i]));
		2271
		2272	av_push (av, data_sv);
		2273
		2274	XPUSHs (sv_2mortal (newRV_noinc ((SV *)av)));
		2275
		2276	api_ready (self);
1539	}	2277	}
1540	OUTPUT:
1541	RETVAL
1542		2278
1543	void	2279	void
1544	_set_state (char *data_)	2280	_set_state (SV *state)
1545	PROTOTYPE: $	2281	PROTOTYPE: $
1546	CODE:	2282	PPCODE:
1547	{	2283	{
1548	struct io_state *data = (void *)data_;	2284	AV *av = (AV *)SvRV (state);
		2285	struct io_state *data = (struct io_state *)SvPVX (AvARRAY (av)[AvFILLp (av)]);
		2286	int i;
1549		2287
1550	errno = data->errorno;	2288	errno = data->errorno;
1551	PL_laststype = data->laststype;	2289	PL_laststype = data->laststype;
1552	PL_laststatval = data->laststatval;	2290	PL_laststatval = data->laststatval;
1553	PL_statcache = data->statcache;	2291	PL_statcache = data->statcache;
1554	}
1555		2292
		2293	EXTEND (SP, AvFILLp (av));
		2294	for (i = 0; i < AvFILLp (av); ++i)
		2295	PUSHs (sv_2mortal (SvREFCNT_inc_NN (AvARRAY (av)[i])));
		2296	}
		2297
		2298
		2299	MODULE = Coro::State PACKAGE = Coro::AnyEvent
		2300
		2301	BOOT:
		2302	sv_activity = coro_get_sv (aTHX_ "Coro::AnyEvent::ACTIVITY", TRUE);
		2303
		2304	SV *
		2305	_schedule (...)
		2306	PROTOTYPE: @
		2307	CODE:
		2308	{
		2309	static int incede;
		2310
		2311	api_cede_notself ();
		2312
		2313	++incede;
		2314	while (coro_nready >= incede && api_cede ())
		2315	;
		2316
		2317	sv_setsv (sv_activity, &PL_sv_undef);
		2318	if (coro_nready >= incede)
		2319	{
		2320	PUSHMARK (SP);
		2321	PUTBACK;
		2322	call_pv ("Coro::AnyEvent::_activity", G_DISCARD | G_EVAL);
		2323	SPAGAIN;
		2324	}
		2325
		2326	--incede;
		2327	}
		2328
		2329
		2330	MODULE = Coro::State PACKAGE = PerlIO::cede
		2331
		2332	BOOT:
		2333	PerlIO_define_layer (aTHX_ &PerlIO_cede);

Diff Legend

–	Removed lines
+	Added lines
<	Changed lines
>	Changed lines