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

Comparing Coro/Coro/State.xs (file contents):
Revision 1.164 by root, Tue Sep 25 01:47:23 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
…		…
98	#define IN_DESTRUCT (PL_main_cv == Nullcv)	122	#define IN_DESTRUCT (PL_main_cv == Nullcv)
99		123
100	#if __GNUC__ >= 3	124	#if __GNUC__ >= 3
101	# define attribute(x) __attribute__(x)	125	# define attribute(x) __attribute__(x)
102	# define BARRIER __asm__ __volatile__ ("" : : : "memory")	126	# define BARRIER __asm__ __volatile__ ("" : : : "memory")
		127	# define expect(expr,value) __builtin_expect ((expr),(value))
103	#else	128	#else
104	# define attribute(x)	129	# define attribute(x)
105	# define BARRIER	130	# define BARRIER
		131	# define expect(expr,value) (expr)
106	#endif	132	#endif
		133
		134	#define expect_false(expr) expect ((expr) != 0, 0)
		135	#define expect_true(expr) expect ((expr) != 0, 1)
107		136
108	#define NOINLINE attribute ((noinline))	137	#define NOINLINE attribute ((noinline))
109		138
110	#include "CoroAPI.h"	139	#include "CoroAPI.h"
111		140
…		…
119	#endif	148	#endif
120		149
121	/* helper storage struct for Coro::AIO */	150	/* helper storage struct for Coro::AIO */
122	struct io_state	151	struct io_state
123	{	152	{
		153	AV *res;
124	int errorno;	154	int errorno;
125	I32 laststype;	155	I32 laststype;
126	int laststatval;	156	int laststatval;
127	Stat_t statcache;	157	Stat_t statcache;
128	};	158	};
129		159
		160	static double (nvtime)(); / so why doesn't it take void? */
		161
130	static size_t coro_stacksize = CORO_STACKSIZE;	162	static size_t coro_stacksize = CORO_STACKSIZE;
131	static struct CoroAPI coroapi;	163	static struct CoroAPI coroapi;
132	static AV main_mainstack; / used to differentiate between $main and others */	164	static AV main_mainstack; / used to differentiate between $main and others */
133	static JMPENV *main_top_env;	165	static JMPENV *main_top_env;
134	static HV coro_state_stash, coro_stash;	166	static HV coro_state_stash, coro_stash;
135	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 */
136		174
137	/* async_pool helper stuff */	175	/* async_pool helper stuff */
138	static SV *sv_pool_rss;	176	static SV *sv_pool_rss;
139	static SV *sv_pool_size;	177	static SV *sv_pool_size;
140	static AV *av_async_pool;	178	static AV *av_async_pool;
141		179
		180	/* Coro::AnyEvent */
		181	static SV *sv_activity;
		182
142	static struct coro_cctx *cctx_first;	183	static struct coro_cctx *cctx_first;
143	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	};
144		194
145	/* this is a structure representing a c-level coroutine */	195	/* this is a structure representing a c-level coroutine */
146	typedef struct coro_cctx {	196	typedef struct coro_cctx {
147	struct coro_cctx *next;	197	struct coro_cctx *next;
148		198
…		…
157	coro_context cctx;	207	coro_context cctx;
158		208
159	#if CORO_USE_VALGRIND	209	#if CORO_USE_VALGRIND
160	int valgrind_id;	210	int valgrind_id;
161	#endif	211	#endif
162	char inuse, mapped;	212	unsigned char flags;
163	} coro_cctx;	213	} coro_cctx;
164		214
165	enum {	215	enum {
166	CF_RUNNING = 0x0001, /* coroutine is running */	216	CF_RUNNING = 0x0001, /* coroutine is running */
167	CF_READY = 0x0002, /* coroutine is ready */	217	CF_READY = 0x0002, /* coroutine is ready */
168	CF_NEW = 0x0004, /* has never been switched to */	218	CF_NEW = 0x0004, /* has never been switched to */
169	CF_DESTROYED = 0x0008, /* coroutine data has been freed */	219	CF_DESTROYED = 0x0008, /* coroutine data has been freed */
170	};	220	};
171		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
172	/* this is a structure representing a perl-level coroutine */	235	/* this is a structure representing a perl-level coroutine */
173	struct coro {	236	struct coro {
174	/* the c coroutine allocated to this perl coroutine, if any */	237	/* the c coroutine allocated to this perl coroutine, if any */
175	coro_cctx *cctx;	238	coro_cctx *cctx;
176		239
		240	/* process data */
		241	AV *mainstack;
		242	perl_slots slot; / basically the saved sp */
		243
177	/* data associated with this coroutine (initial args) */	244	AV args; / data associated with this coroutine (initial args) */
178	AV *args;	245	int refcnt; /* coroutines are refcounted, yes */
179	int refcnt;
180	int save; /* CORO_SAVE flags */
181	int flags; /* CF_ flags */	246	int flags; /* CF_ flags */
		247	HV hv; / the perl hash associated with this coro, if any */
182		248
183	/* optionally saved, might be zero */	249	/* statistics */
184	AV defav; / @_ */	250	int usecount; /* number of transfers to this coro */
185	SV defsv; / $_ */
186	SV errsv; / $@ */
187	GV deffh; / default filehandle */
188	SV irssv; / $/ */
189	SV irssv_sv; / real $/ cache */
190
191	#define VAR(name,type) type name;
192	# include "state.h"
193	#undef VAR
194		251
195	/* coro process data */	252	/* coro process data */
196	int prio;	253	int prio;
		254	SV throw; / exception to be thrown */
		255
		256	/* async_pool */
		257	SV *saved_deffh;
197		258
198	/* linked list */	259	/* linked list */
199	struct coro next, prev;	260	struct coro next, prev;
200	HV hv; / the perl hash associated with this coro, if any */
201	};	261	};
202		262
203	typedef struct coro *Coro__State;	263	typedef struct coro *Coro__State;
204	typedef struct coro *Coro__State_or_hashref;	264	typedef struct coro *Coro__State_or_hashref;
205		265
…		…
212	#define PRIO_IDLE -3	272	#define PRIO_IDLE -3
213	#define PRIO_MIN -4	273	#define PRIO_MIN -4
214		274
215	/* for Coro.pm */	275	/* for Coro.pm */
216	static SV *coro_current;	276	static SV *coro_current;
		277	static SV *coro_readyhook;
217	static AV *coro_ready [PRIO_MAX-PRIO_MIN+1];	278	static AV *coro_ready [PRIO_MAX-PRIO_MIN+1];
218	static int coro_nready;	279	static int coro_nready;
219	static struct coro *coro_first;	280	static struct coro *coro_first;
220		281
221	/ lowlevel stuff ********************************************************/	282	/ lowlevel stuff ********************************************************/
222		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
223	static AV *	314	static AV *
224	coro_clone_padlist (pTHX_ CV *cv)	315	coro_clone_padlist (pTHX_ CV *cv)
225	{	316	{
226	AV *padlist = CvPADLIST (cv);	317	AV *padlist = CvPADLIST (cv);
227	AV newpadlist, newpad;	318	AV newpadlist, newpad;
228		319
229	newpadlist = newAV ();	320	newpadlist = newAV ();
230	AvREAL_off (newpadlist);	321	AvREAL_off (newpadlist);
231	#if PERL_VERSION_ATLEAST (5,9,0)	322	#if PERL_VERSION_ATLEAST (5,10,0)
232	Perl_pad_push (aTHX_ padlist, AvFILLp (padlist) + 1);	323	Perl_pad_push (aTHX_ padlist, AvFILLp (padlist) + 1);
233	#else	324	#else
234	Perl_pad_push (aTHX_ padlist, AvFILLp (padlist) + 1, 1);	325	Perl_pad_push (aTHX_ padlist, AvFILLp (padlist) + 1, 1);
235	#endif	326	#endif
236	newpad = (AV *)AvARRAY (padlist)[AvFILLp (padlist)];	327	newpad = (AV *)AvARRAY (padlist)[AvFILLp (padlist)];
237	--AvFILLp (padlist);	328	--AvFILLp (padlist);
238		329
239	av_store (newpadlist, 0, SvREFCNT_inc (*av_fetch (padlist, 0, FALSE)));	330	av_store (newpadlist, 0, SvREFCNT_inc_NN (*av_fetch (padlist, 0, FALSE)));
240	av_store (newpadlist, 1, (SV *)newpad);	331	av_store (newpadlist, 1, (SV *)newpad);
241		332
242	return newpadlist;	333	return newpadlist;
243	}	334	}
244		335
…		…
274		365
275	/* casting is fun. */	366	/* casting is fun. */
276	while (&PL_sv_undef != (SV )(padlist = (AV )av_pop (av)))	367	while (&PL_sv_undef != (SV )(padlist = (AV )av_pop (av)))
277	free_padlist (aTHX_ padlist);	368	free_padlist (aTHX_ padlist);
278		369
279	SvREFCNT_dec (av);	370	SvREFCNT_dec (av); /* sv_magicext increased the refcount */
280		371
281	return 0;	372	return 0;
282	}	373	}
283		374
284	#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
285		377
286	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	};
287		382
288	#define CORO_MAGIC(cv) \	383	#define CORO_MAGIC(sv,type) \
289	SvMAGIC (cv) \	384	SvMAGIC (sv) \
290	? SvMAGIC (cv)->mg_type == PERL_MAGIC_coro \	385	? SvMAGIC (sv)->mg_type == type \
291	? SvMAGIC (cv) \	386	? SvMAGIC (sv) \
292	: mg_find ((SV *)cv, PERL_MAGIC_coro) \	387	: mg_find (sv, type) \
293	: 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))
294		418
295	/* the next two functions merely cache the padlists */	419	/* the next two functions merely cache the padlists */
296	static void	420	static void
297	get_padlist (pTHX_ CV *cv)	421	get_padlist (pTHX_ CV *cv)
298	{	422	{
299	MAGIC *mg = CORO_MAGIC (cv);	423	MAGIC *mg = CORO_MAGIC_cv (cv);
300	AV *av;	424	AV *av;
301		425
302	if (mg && AvFILLp ((av = (AV *)mg->mg_obj)) >= 0)	426	if (expect_true (mg && AvFILLp ((av = (AV *)mg->mg_obj)) >= 0))
303	CvPADLIST (cv) = (AV *)AvARRAY (av)[AvFILLp (av)--];	427	CvPADLIST (cv) = (AV *)AvARRAY (av)[AvFILLp (av)--];
304	else	428	else
305	{	429	{
306	#if CORO_PREFER_PERL_FUNCTIONS	430	#if CORO_PREFER_PERL_FUNCTIONS
307	/* this is probably cleaner, but also slower? */	431	/* this is probably cleaner? but also slower! */
		432	/* in practise, it seems to be less stable */
308	CV *cp = Perl_cv_clone (cv);	433	CV *cp = Perl_cv_clone (cv);
309	CvPADLIST (cv) = CvPADLIST (cp);	434	CvPADLIST (cv) = CvPADLIST (cp);
310	CvPADLIST (cp) = 0;	435	CvPADLIST (cp) = 0;
311	SvREFCNT_dec (cp);	436	SvREFCNT_dec (cp);
312	#else	437	#else
…		…
316	}	441	}
317		442
318	static void	443	static void
319	put_padlist (pTHX_ CV *cv)	444	put_padlist (pTHX_ CV *cv)
320	{	445	{
321	MAGIC *mg = CORO_MAGIC (cv);	446	MAGIC *mg = CORO_MAGIC_cv (cv);
322	AV *av;	447	AV *av;
323		448
324	if (!mg)	449	if (expect_false (!mg))
325	{	450	mg = sv_magicext ((SV )cv, (SV )newAV (), CORO_MAGIC_type_cv, &coro_cv_vtbl, 0, 0);
326	sv_magic ((SV *)cv, 0, PERL_MAGIC_coro, 0, 0);
327	mg = mg_find ((SV *)cv, PERL_MAGIC_coro);
328	mg->mg_virtual = &vtbl_coro;
329	mg->mg_obj = (SV *)newAV ();
330	}
331		451
332	av = (AV *)mg->mg_obj;	452	av = (AV *)mg->mg_obj;
333		453
334	if (AvFILLp (av) >= AvMAX (av))	454	if (expect_false (AvFILLp (av) >= AvMAX (av)))
335	av_extend (av, AvMAX (av) + 1);	455	av_extend (av, AvMAX (av) + 1);
336		456
337	AvARRAY (av)[++AvFILLp (av)] = (SV *)CvPADLIST (cv);	457	AvARRAY (av)[++AvFILLp (av)] = (SV *)CvPADLIST (cv);
338	}	458	}
339		459
340	/ load & save, init *****************************************************/	460	/ load & save, init *****************************************************/
341
342	#define SB do {
343	#define SE } while (0)
344
345	#define REPLACE_SV(sv,val) SB SvREFCNT_dec (sv); (sv) = (val); (val) = 0; SE
346		461
347	static void	462	static void
348	load_perl (pTHX_ Coro__State c)	463	load_perl (pTHX_ Coro__State c)
349	{	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
350	#define VAR(name,type) PL_ ## name = c->name;	475	#define VAR(name,type) PL_ ## name = slot->name;
351	# include "state.h"	476	# include "state.h"
352	#undef VAR	477	#undef VAR
353
354	if (c->defav) REPLACE_SV (GvAV (PL_defgv), c->defav);
355	if (c->defsv) REPLACE_SV (DEFSV , c->defsv);
356	if (c->errsv) REPLACE_SV (ERRSV , c->errsv);
357	if (c->deffh) REPLACE_SV (PL_defoutgv , c->deffh);
358
359	if (c->irssv)
360	{
361	if (c->irssv == PL_rs \|\| sv_eq (PL_rs, c->irssv))
362	{
363	SvREFCNT_dec (c->irssv);
364	c->irssv = 0;
365	}
366	else
367	{
368	REPLACE_SV (PL_rs, c->irssv);
369	if (!c->irssv_sv) c->irssv_sv = get_sv ("/", 0);
370	sv_setsv (c->irssv_sv, PL_rs);
371	}
372	}
373		478
374	{	479	{
375	dSP;	480	dSP;
		481
376	CV *cv;	482	CV *cv;
377		483
378	/* now do the ugly restore mess */	484	/* now do the ugly restore mess */
379	while ((cv = (CV *)POPs))	485	while (expect_true (cv = (CV *)POPs))
380	{	486	{
381	put_padlist (aTHX_ cv); /* mark this padlist as available */	487	put_padlist (aTHX_ cv); /* mark this padlist as available */
382	CvDEPTH (cv) = PTR2IV (POPs);	488	CvDEPTH (cv) = PTR2IV (POPs);
383	CvPADLIST (cv) = (AV *)POPs;	489	CvPADLIST (cv) = (AV *)POPs;
384	}	490	}
…		…
403		509
404	XPUSHs (Nullsv);	510	XPUSHs (Nullsv);
405	/* this loop was inspired by pp_caller */	511	/* this loop was inspired by pp_caller */
406	for (;;)	512	for (;;)
407	{	513	{
408	while (cxix >= 0)	514	while (expect_true (cxix >= 0))
409	{	515	{
410	PERL_CONTEXT *cx = &ccstk[cxix--];	516	PERL_CONTEXT *cx = &ccstk[cxix--];
411		517
412	if (CxTYPE (cx) == CXt_SUB \|\| CxTYPE (cx) == CXt_FORMAT)	518	if (expect_true (CxTYPE (cx) == CXt_SUB \|\| CxTYPE (cx) == CXt_FORMAT))
413	{	519	{
414	CV *cv = cx->blk_sub.cv;	520	CV *cv = cx->blk_sub.cv;
415		521
416	if (CvDEPTH (cv))	522	if (expect_true (CvDEPTH (cv)))
417	{	523	{
418	EXTEND (SP, 3);	524	EXTEND (SP, 3);
419	PUSHs ((SV *)CvPADLIST (cv));	525	PUSHs ((SV *)CvPADLIST (cv));
420	PUSHs (INT2PTR (SV *, CvDEPTH (cv)));	526	PUSHs (INT2PTR (SV *, (IV)CvDEPTH (cv)));
421	PUSHs ((SV *)cv);	527	PUSHs ((SV *)cv);
422		528
423	CvDEPTH (cv) = 0;	529	CvDEPTH (cv) = 0;
424	get_padlist (aTHX_ cv);	530	get_padlist (aTHX_ cv);
425	}	531	}
426	}	532	}
427	}	533	}
428		534
429	if (top_si->si_type == PERLSI_MAIN)	535	if (expect_true (top_si->si_type == PERLSI_MAIN))
430	break;	536	break;
431		537
432	top_si = top_si->si_prev;	538	top_si = top_si->si_prev;
433	ccstk = top_si->si_cxstack;	539	ccstk = top_si->si_cxstack;
434	cxix = top_si->si_cxix;	540	cxix = top_si->si_cxix;
435	}	541	}
436		542
437	PUTBACK;	543	PUTBACK;
438	}	544	}
439		545
440	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 */
441	c->defsv = c->save & CORO_SAVE_DEFSV ? SvREFCNT_inc (DEFSV) : 0;	547	/* we manually unroll here, as usually 2 slots is enough */
442	c->errsv = c->save & CORO_SAVE_ERRSV ? SvREFCNT_inc (ERRSV) : 0;	548	if (SLOT_COUNT >= 1) CXINC;
443	c->deffh = c->save & CORO_SAVE_DEFFH ? (GV *)SvREFCNT_inc (PL_defoutgv) : 0;	549	if (SLOT_COUNT >= 2) CXINC;
444	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 */
445		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
446	#define VAR(name,type)c->name = PL_ ## name;	568	#define VAR(name,type) slot->name = PL_ ## name;
447	# include "state.h"	569	# include "state.h"
448	#undef VAR	570	#undef VAR
		571	}
449	}	572	}
450		573
451	/*	574	/*
452	* allocate various perl stacks. This is an exact copy	575	* allocate various perl stacks. This is an exact copy
453	* of perl.c:init_stacks, except that it uses less memory	576	* of perl.c:init_stacks, except that it uses less memory
…		…
458	# define coro_init_stacks init_stacks	581	# define coro_init_stacks init_stacks
459	#else	582	#else
460	static void	583	static void
461	coro_init_stacks (pTHX)	584	coro_init_stacks (pTHX)
462	{	585	{
463	PL_curstackinfo = new_stackinfo(64, 6);	586	PL_curstackinfo = new_stackinfo(32, 8);
464	PL_curstackinfo->si_type = PERLSI_MAIN;	587	PL_curstackinfo->si_type = PERLSI_MAIN;
465	PL_curstack = PL_curstackinfo->si_stack;	588	PL_curstack = PL_curstackinfo->si_stack;
466	PL_mainstack = PL_curstack; /* remember in case we switch stacks */	589	PL_mainstack = PL_curstack; /* remember in case we switch stacks */
467		590
468	PL_stack_base = AvARRAY(PL_curstack);	591	PL_stack_base = AvARRAY(PL_curstack);
469	PL_stack_sp = PL_stack_base;	592	PL_stack_sp = PL_stack_base;
470	PL_stack_max = PL_stack_base + AvMAX(PL_curstack);	593	PL_stack_max = PL_stack_base + AvMAX(PL_curstack);
471		594
472	New(50,PL_tmps_stack,64,SV*);	595	New(50,PL_tmps_stack,32,SV*);
473	PL_tmps_floor = -1;	596	PL_tmps_floor = -1;
474	PL_tmps_ix = -1;	597	PL_tmps_ix = -1;
475	PL_tmps_max = 64;	598	PL_tmps_max = 32;
476		599
477	New(54,PL_markstack,16,I32);	600	New(54,PL_markstack,16,I32);
478	PL_markstack_ptr = PL_markstack;	601	PL_markstack_ptr = PL_markstack;
479	PL_markstack_max = PL_markstack + 16;	602	PL_markstack_max = PL_markstack + 16;
480		603
481	#ifdef SET_MARK_OFFSET	604	#ifdef SET_MARK_OFFSET
482	SET_MARK_OFFSET;	605	SET_MARK_OFFSET;
483	#endif	606	#endif
484		607
485	New(54,PL_scopestack,16,I32);	608	New(54,PL_scopestack,8,I32);
486	PL_scopestack_ix = 0;	609	PL_scopestack_ix = 0;
487	PL_scopestack_max = 16;	610	PL_scopestack_max = 8;
488		611
489	New(54,PL_savestack,64,ANY);	612	New(54,PL_savestack,24,ANY);
490	PL_savestack_ix = 0;	613	PL_savestack_ix = 0;
491	PL_savestack_max = 64;	614	PL_savestack_max = 24;
492		615
493	#if !PERL_VERSION_ATLEAST (5,9,0)	616	#if !PERL_VERSION_ATLEAST (5,10,0)
494	New(54,PL_retstack,4,OP*);	617	New(54,PL_retstack,4,OP*);
495	PL_retstack_ix = 0;	618	PL_retstack_ix = 0;
496	PL_retstack_max = 4;	619	PL_retstack_max = 4;
497	#endif	620	#endif
498	}	621	}
…		…
502	* destroy the stacks, the callchain etc...	625	* destroy the stacks, the callchain etc...
503	*/	626	*/
504	static void	627	static void
505	coro_destroy_stacks (pTHX)	628	coro_destroy_stacks (pTHX)
506	{	629	{
507	if (!IN_DESTRUCT)
508	{
509	/* restore all saved variables and stuff */
510	LEAVE_SCOPE (0);
511	assert (PL_tmps_floor == -1);
512
513	/* free all temporaries */
514	FREETMPS;
515	assert (PL_tmps_ix == -1);
516
517	/* unwind all extra stacks */
518	POPSTACK_TO (PL_mainstack);
519
520	/* unwind main stack */
521	dounwind (-1);
522	}
523
524	while (PL_curstackinfo->si_next)	630	while (PL_curstackinfo->si_next)
525	PL_curstackinfo = PL_curstackinfo->si_next;	631	PL_curstackinfo = PL_curstackinfo->si_next;
526		632
527	while (PL_curstackinfo)	633	while (PL_curstackinfo)
528	{	634	{
…		…
538		644
539	Safefree (PL_tmps_stack);	645	Safefree (PL_tmps_stack);
540	Safefree (PL_markstack);	646	Safefree (PL_markstack);
541	Safefree (PL_scopestack);	647	Safefree (PL_scopestack);
542	Safefree (PL_savestack);	648	Safefree (PL_savestack);
543	#if !PERL_VERSION_ATLEAST (5,9,0)	649	#if !PERL_VERSION_ATLEAST (5,10,0)
544	Safefree (PL_retstack);	650	Safefree (PL_retstack);
545	#endif	651	#endif
546	}	652	}
547		653
548	static size_t	654	static size_t
549	coro_rss (struct coro *coro)	655	coro_rss (pTHX_ struct coro *coro)
550	{	656	{
551	size_t rss = sizeof (coro);	657	size_t rss = sizeof (*coro);
552		658
553	if (coro->mainstack)	659	if (coro->mainstack)
554	{	660	{
		661	perl_slots tmp_slot;
		662	perl_slots *slot;
		663
555	if (coro->flags & CF_RUNNING)	664	if (coro->flags & CF_RUNNING)
556	{	665	{
		666	slot = &tmp_slot;
		667
557	#define VAR(name,type)coro->name = PL_ ## name;	668	#define VAR(name,type) slot->name = PL_ ## name;
558	# include "state.h"	669	# include "state.h"
559	#undef VAR	670	#undef VAR
560	}	671	}
		672	else
		673	slot = coro->slot;
561		674
		675	if (slot)
		676	{
562	rss += sizeof (coro->curstackinfo);	677	rss += sizeof (slot->curstackinfo);
563	rss += sizeof (struct xpvav) + (1 + AvFILL (coro->curstackinfo->si_stack)) * sizeof (SV *);
564	rss += (coro->curstackinfo->si_cxmax + 1) * sizeof (PERL_CONTEXT);	678	rss += (slot->curstackinfo->si_cxmax + 1) * sizeof (PERL_CONTEXT);
565	rss += sizeof (struct xpvav) + (1 + AvFILL (coro->curstack)) * sizeof (SV *);	679	rss += sizeof (SV) + sizeof (struct xpvav) + (1 + AvMAX (slot->curstack)) * sizeof (SV *);
566	rss += coro->tmps_max * sizeof (SV *);	680	rss += slot->tmps_max * sizeof (SV *);
567	rss += (coro->markstack_max - coro->markstack_ptr) * sizeof (I32);	681	rss += (slot->markstack_max - slot->markstack_ptr) * sizeof (I32);
568	rss += coro->scopestack_max * sizeof (I32);	682	rss += slot->scopestack_max * sizeof (I32);
569	rss += coro->savestack_max * sizeof (ANY);	683	rss += slot->savestack_max * sizeof (ANY);
570		684
571	#if !PERL_VERSION_ATLEAST (5,9,0)	685	#if !PERL_VERSION_ATLEAST (5,10,0)
572	rss += coro->retstack_max * sizeof (OP *);	686	rss += slot->retstack_max * sizeof (OP *);
573	#endif	687	#endif
		688	}
574	}	689	}
575		690
576	return rss;	691	return rss;
577	}	692	}
578		693
579	/ coroutine stack handling **********************************************/	694	/ coroutine stack handling **********************************************/
580		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
581	static void	786	static void
582	setup_coro (pTHX_ struct coro *coro)	787	coro_setup (pTHX_ struct coro *coro)
583	{	788	{
584	/*	789	/*
585	* emulate part of the perl startup here.	790	* emulate part of the perl startup here.
586	*/	791	*/
587	coro_init_stacks (aTHX);	792	coro_init_stacks (aTHX);
588		793
		794	PL_runops = RUNOPS_DEFAULT;
589	PL_curcop = &PL_compiling;	795	PL_curcop = &PL_compiling;
590	PL_in_eval = EVAL_NULL;	796	PL_in_eval = EVAL_NULL;
591	PL_comppad = 0;	797	PL_comppad = 0;
592	PL_curpm = 0;	798	PL_curpm = 0;
		799	PL_curpad = 0;
593	PL_localizing = 0;	800	PL_localizing = 0;
594	PL_dirty = 0;	801	PL_dirty = 0;
595	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);
596		817
597	{	818	{
598	dSP;	819	dSP;
599	LOGOP myop;	820	LOGOP myop;
600		821
601	SvREFCNT_dec (GvAV (PL_defgv));
602	GvAV (PL_defgv) = coro->args; coro->args = 0;
603
604	Zero (&myop, 1, LOGOP);	822	Zero (&myop, 1, LOGOP);
605	myop.op_next = Nullop;	823	myop.op_next = Nullop;
606	myop.op_flags = OPf_WANT_VOID;	824	myop.op_flags = OPf_WANT_VOID;
607		825
608	PUSHMARK (SP);	826	PUSHMARK (SP);
609	XPUSHs (av_shift (GvAV (PL_defgv)));	827	XPUSHs (sv_2mortal (av_shift (GvAV (PL_defgv))));
610	PUTBACK;	828	PUTBACK;
611	PL_op = (OP *)&myop;	829	PL_op = (OP *)&myop;
612	PL_op = PL_ppaddr[OP_ENTERSUB](aTHX);	830	PL_op = PL_ppaddr[OP_ENTERSUB](aTHX);
613	SPAGAIN;	831	SPAGAIN;
614	}	832	}
615		833
616	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);
617	}	876	}
618		877
619	static void	878	static void
620	free_coro_mortal (pTHX)	879	free_coro_mortal (pTHX)
621	{	880	{
622	if (coro_mortal)	881	if (expect_true (coro_mortal))
623	{	882	{
624	SvREFCNT_dec (coro_mortal);	883	SvREFCNT_dec (coro_mortal);
625	coro_mortal = 0;	884	coro_mortal = 0;
626	}	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;
627	}	1010	}
628		1011
629	/* 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 */
630	/* _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 */
631	/* during execution of a perl program */	1014	/* during execution of a perl program */
632	static void NOINLINE	1015	static void NOINLINE
633	prepare_cctx (pTHX_ coro_cctx *cctx)	1016	cctx_prepare (pTHX_ coro_cctx *cctx)
634	{	1017	{
635	dSP;	1018	dSP;
636	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;
637		1025
638	Zero (&myop, 1, LOGOP);	1026	Zero (&myop, 1, LOGOP);
639	myop.op_next = PL_op;	1027	myop.op_next = PL_op;
640	myop.op_flags = OPf_WANT_VOID \| OPf_STACKED;	1028	myop.op_flags = OPf_WANT_VOID \| OPf_STACKED;
641		1029
…		…
651		1039
652	/*	1040	/*
653	* this is a _very_ stripped down perl interpreter ;)	1041	* this is a _very_ stripped down perl interpreter ;)
654	*/	1042	*/
655	static void	1043	static void
656	coro_run (void *arg)	1044	cctx_run (void *arg)
657	{	1045	{
658	dTHX;	1046	dTHX;
659		1047
660	/* coro_run is the alternative tail of transfer(), so unlock here. */	1048	/* cctx_run is the alternative tail of transfer(), so unlock here. */
661	UNLOCK;	1049	UNLOCK;
662		1050
663	PL_top_env = &PL_start_env;	1051	/* we now skip the entersub that lead to transfer() */
		1052	PL_op = PL_op->op_next;
664		1053
665	/* inject a fake subroutine call to cctx_init */	1054	/* inject a fake subroutine call to cctx_init */
666	prepare_cctx (aTHX_ (coro_cctx *)arg);	1055	cctx_prepare (aTHX_ (coro_cctx *)arg);
667		1056
668	/* 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 */
669	PL_restartop = PL_op;	1058	PL_restartop = PL_op;
670	perl_run (PL_curinterp);	1059	perl_run (PL_curinterp);
671		1060
…		…
690	++cctx_count;	1079	++cctx_count;
691		1080
692	Newz (0, cctx, 1, coro_cctx);	1081	Newz (0, cctx, 1, coro_cctx);
693		1082
694	#if HAVE_MMAP	1083	#if HAVE_MMAP
695
696	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;
697	/* mmap supposedly does allocate-on-write for us */	1085	/* mmap supposedly does allocate-on-write for us */
698	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);
699		1087
700	if (cctx->sptr != (void *)-1)	1088	if (cctx->sptr != (void *)-1)
…		…
702	# if CORO_STACKGUARD	1090	# if CORO_STACKGUARD
703	mprotect (cctx->sptr, CORO_STACKGUARD * PAGESIZE, PROT_NONE);	1091	mprotect (cctx->sptr, CORO_STACKGUARD * PAGESIZE, PROT_NONE);
704	# endif	1092	# endif
705	stack_start = CORO_STACKGUARD * PAGESIZE + (char *)cctx->sptr;	1093	stack_start = CORO_STACKGUARD * PAGESIZE + (char *)cctx->sptr;
706	stack_size = cctx->ssize - CORO_STACKGUARD * PAGESIZE;	1094	stack_size = cctx->ssize - CORO_STACKGUARD * PAGESIZE;
707	cctx->mapped = 1;	1095	cctx->flags \|= CC_MAPPED;
708	}	1096	}
709	else	1097	else
710	#endif	1098	#endif
711	{	1099	{
712	cctx->ssize = coro_stacksize * (long)sizeof (long);	1100	cctx->ssize = coro_stacksize * (long)sizeof (long);
…		…
721	stack_start = cctx->sptr;	1109	stack_start = cctx->sptr;
722	stack_size = cctx->ssize;	1110	stack_size = cctx->ssize;
723	}	1111	}
724		1112
725	REGISTER_STACK (cctx, (char )stack_start, (char )stack_start + stack_size);	1113	REGISTER_STACK (cctx, (char )stack_start, (char )stack_start + stack_size);
726	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);
727		1115
728	return cctx;	1116	return cctx;
729	}	1117	}
730		1118
731	static void	1119	static void
…		…
739	#if CORO_USE_VALGRIND	1127	#if CORO_USE_VALGRIND
740	VALGRIND_STACK_DEREGISTER (cctx->valgrind_id);	1128	VALGRIND_STACK_DEREGISTER (cctx->valgrind_id);
741	#endif	1129	#endif
742		1130
743	#if HAVE_MMAP	1131	#if HAVE_MMAP
744	if (cctx->mapped)	1132	if (cctx->flags & CC_MAPPED)
745	munmap (cctx->sptr, cctx->ssize);	1133	munmap (cctx->sptr, cctx->ssize);
746	else	1134	else
747	#endif	1135	#endif
748	Safefree (cctx->sptr);	1136	Safefree (cctx->sptr);
749		1137
750	Safefree (cctx);	1138	Safefree (cctx);
751	}	1139	}
752		1140
		1141	/* wether this cctx should be destructed */
		1142	#define CCTX_EXPIRED(cctx) ((cctx)->ssize < coro_stacksize \|\| ((cctx)->flags & CC_NOREUSE))
		1143
753	static coro_cctx *	1144	static coro_cctx *
754	cctx_get (pTHX)	1145	cctx_get (pTHX)
755	{	1146	{
756	while (cctx_first)	1147	while (expect_true (cctx_first))
757	{	1148	{
758	coro_cctx *cctx = cctx_first;	1149	coro_cctx *cctx = cctx_first;
759	cctx_first = cctx->next;	1150	cctx_first = cctx->next;
760	--cctx_idle;	1151	--cctx_idle;
761		1152
762	if (cctx->ssize >= coro_stacksize)	1153	if (expect_true (!CCTX_EXPIRED (cctx)))
763	return cctx;	1154	return cctx;
764		1155
765	cctx_destroy (cctx);	1156	cctx_destroy (cctx);
766	}	1157	}
767		1158
768	PL_op = PL_op->op_next;
769	return cctx_new ();	1159	return cctx_new ();
770	}	1160	}
771		1161
772	static void	1162	static void
773	cctx_put (coro_cctx *cctx)	1163	cctx_put (coro_cctx *cctx)
774	{	1164	{
775	/* free another cctx if overlimit */	1165	/* free another cctx if overlimit */
776	if (cctx_idle >= MAX_IDLE_CCTX)	1166	if (expect_false (cctx_idle >= MAX_IDLE_CCTX))
777	{	1167	{
778	coro_cctx *first = cctx_first;	1168	coro_cctx *first = cctx_first;
779	cctx_first = first->next;	1169	cctx_first = first->next;
780	--cctx_idle;	1170	--cctx_idle;
781		1171
782	assert (!first->inuse);
783	cctx_destroy (first);	1172	cctx_destroy (first);
784	}	1173	}
785		1174
786	++cctx_idle;	1175	++cctx_idle;
787	cctx->next = cctx_first;	1176	cctx->next = cctx_first;
788	cctx_first = cctx;	1177	cctx_first = cctx;
789	}	1178	}
790		1179
791	/ coroutine switching ***************************************************/	1180	/ coroutine switching ***************************************************/
792		1181
793	/* 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 */
794	static void NOINLINE	1204	static void NOINLINE
795	transfer (pTHX_ struct coro prev, struct coro next)	1205	transfer (pTHX_ struct coro prev, struct coro next, int force_cctx)
796	{	1206	{
797	dSTACKLEVEL;	1207	dSTACKLEVEL;
		1208	static volatile int has_throw;
798		1209
799	/* sometimes transfer is only called to set idle_sp */	1210	/* sometimes transfer is only called to set idle_sp */
800	if (!next)	1211	if (expect_false (!next))
801	{	1212	{
802	((coro_cctx *)prev)->idle_sp = STACKLEVEL;	1213	((coro_cctx *)prev)->idle_sp = STACKLEVEL;
803	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 */
804	}	1215	}
805	else if (prev != next)	1216	else if (expect_true (prev != next))
806	{	1217	{
807	coro_cctx *prev__cctx;	1218	coro_cctx *prev__cctx;
808		1219
809	if (prev->flags & CF_NEW)	1220	if (expect_false (prev->flags & CF_NEW))
810	{	1221	{
811	/* create a new empty context */	1222	/* create a new empty context */
812	Newz (0, prev->cctx, 1, coro_cctx);	1223	Newz (0, prev->cctx, 1, coro_cctx);
813	prev->cctx->inuse = 1;
814	prev->flags &= ~CF_NEW;	1224	prev->flags &= ~CF_NEW;
815	prev->flags \|= CF_RUNNING;	1225	prev->flags \|= CF_RUNNING;
816	}	1226	}
817		1227
818	/TODO: must not croak here /
819	if (!prev->flags & CF_RUNNING)
820	croak ("Coro::State::transfer called with non-running prev Coro::State, but can only transfer from running states");
821
822	if (next->flags & CF_RUNNING)
823	croak ("Coro::State::transfer called with running next Coro::State, but can only transfer to inactive states");
824
825	if (next->flags & CF_DESTROYED)
826	croak ("Coro::State::transfer called with destroyed next Coro::State, but can only transfer to inactive states");
827
828	prev->flags &= ~CF_RUNNING;	1228	prev->flags &= ~CF_RUNNING;
829	next->flags \|= CF_RUNNING;	1229	next->flags \|= CF_RUNNING;
830		1230
831	LOCK;	1231	LOCK;
832		1232
		1233	/* first get rid of the old state */
		1234	save_perl (aTHX_ prev);
		1235
833	if (next->flags & CF_NEW)	1236	if (expect_false (next->flags & CF_NEW))
834	{	1237	{
835	/* need to start coroutine */	1238	/* need to start coroutine */
836	next->flags &= ~CF_NEW;	1239	next->flags &= ~CF_NEW;
837	/* first get rid of the old state */
838	save_perl (aTHX_ prev);
839	/* setup coroutine call */	1240	/* setup coroutine call */
840	setup_coro (aTHX_ next);	1241	coro_setup (aTHX_ next);
841	/* need a new stack */
842	assert (!next->cctx);
843	}	1242	}
844	else	1243	else
845	{
846	/* coroutine already started */
847	save_perl (aTHX_ prev);
848	load_perl (aTHX_ next);	1244	load_perl (aTHX_ next);
849	}
850		1245
851	prev__cctx = prev->cctx;	1246	prev__cctx = prev->cctx;
852		1247
853	/* possibly "free" the cctx */	1248	/* possibly "free" the cctx */
		1249	if (expect_true (
854	if (prev__cctx->idle_sp == STACKLEVEL)	1250	prev__cctx->idle_sp == STACKLEVEL
		1251	&& !(prev__cctx->flags & CC_TRACE)
		1252	&& !force_cctx
		1253	))
855	{	1254	{
856	/* 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 */
857	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));
858		1257
859	prev->cctx = 0;	1258	prev->cctx = 0;
860		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
861	cctx_put (prev__cctx);	1266	cctx_put (prev__cctx);
862	prev__cctx->inuse = 0;
863	}	1267	}
864		1268
		1269	++next->usecount;
		1270
865	if (!next->cctx)	1271	if (expect_true (!next->cctx))
866	{
867	next->cctx = cctx_get (aTHX);	1272	next->cctx = cctx_get (aTHX);
868	assert (!next->cctx->inuse);
869	next->cctx->inuse = 1;
870	}
871		1273
		1274	has_throw = !!next->throw;
		1275
872	if (prev__cctx != next->cctx)	1276	if (expect_false (prev__cctx != next->cctx))
873	{	1277	{
874	prev__cctx->top_env = PL_top_env;	1278	prev__cctx->top_env = PL_top_env;
875	PL_top_env = next->cctx->top_env;	1279	PL_top_env = next->cctx->top_env;
876	coro_transfer (&prev__cctx->cctx, &next->cctx->cctx);	1280	coro_transfer (&prev__cctx->cctx, &next->cctx->cctx);
877	}	1281	}
878		1282
879	free_coro_mortal (aTHX);	1283	free_coro_mortal (aTHX);
880	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	}
881	}	1298	}
882	}	1299	}
883		1300
884	struct transfer_args	1301	struct transfer_args
885	{	1302	{
886	struct coro prev, next;	1303	struct coro prev, next;
887	};	1304	};
888		1305
		1306	#define TRANSFER(ta, force_cctx) transfer (aTHX_ (ta).prev, (ta).next, (force_cctx))
889	#define TRANSFER(ta) transfer (aTHX_ (ta).prev, (ta).next)	1307	#define TRANSFER_CHECK(ta) transfer_check (aTHX_ (ta).prev, (ta).next)
890		1308
891	/ high level stuff ******************************************************/	1309	/ high level stuff ******************************************************/
892		1310
893	static int	1311	static int
894	coro_state_destroy (pTHX_ struct coro *coro)	1312	coro_state_destroy (pTHX_ struct coro *coro)
…		…
911		1329
912	if (coro->mainstack && coro->mainstack != main_mainstack)	1330	if (coro->mainstack && coro->mainstack != main_mainstack)
913	{	1331	{
914	struct coro temp;	1332	struct coro temp;
915		1333
916	assert (!(coro->flags & CF_RUNNING));
917
918	Zero (&temp, 1, struct coro);
919	temp.save = CORO_SAVE_ALL;
920
921	if (coro->flags & CF_RUNNING)	1334	if (coro->flags & CF_RUNNING)
922	croak ("FATAL: tried to destroy currently running coroutine");	1335	croak ("FATAL: tried to destroy currently running coroutine");
923		1336
924	save_perl (aTHX_ &temp);	1337	save_perl (aTHX_ &temp);
925	load_perl (aTHX_ coro);	1338	load_perl (aTHX_ coro);
926		1339
927	coro_destroy_stacks (aTHX);	1340	coro_destroy (aTHX_ coro);
928		1341
929	load_perl (aTHX_ &temp); /* this will get rid of defsv etc.. */	1342	load_perl (aTHX_ &temp);
930		1343
931	coro->mainstack = 0;	1344	coro->slot = 0;
932	}	1345	}
933		1346
934	cctx_destroy (coro->cctx);	1347	cctx_destroy (coro->cctx);
935	SvREFCNT_dec (coro->args);	1348	SvREFCNT_dec (coro->args);
936		1349
…		…
977	#else	1390	#else
978	# define MGf_DUP 0	1391	# define MGf_DUP 0
979	#endif	1392	#endif
980	};	1393	};
981		1394
982	static struct coro *
983	SvSTATE_ (pTHX_ SV *coro)
984	{
985	HV *stash;
986	MAGIC *mg;
987
988	if (SvROK (coro))
989	coro = SvRV (coro);
990
991	stash = SvSTASH (coro);
992	if (stash != coro_stash && stash != coro_state_stash)
993	{
994	/* very slow, but rare, check */
995	if (!sv_derived_from (sv_2mortal (newRV_inc (coro)), "Coro::State"))
996	croak ("Coro::State object required");
997	}
998
999	mg = CORO_MAGIC (coro);
1000	return (struct coro *)mg->mg_ptr;
1001	}
1002
1003	#define SvSTATE(sv) SvSTATE_ (aTHX_ (sv))
1004
1005	static void	1395	static void
1006	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)
1007	{	1397	{
1008	ta->prev = SvSTATE (prev_sv);	1398	ta->prev = SvSTATE (prev_sv);
1009	ta->next = SvSTATE (next_sv);	1399	ta->next = SvSTATE (next_sv);
		1400	TRANSFER_CHECK (*ta);
1010	}	1401	}
1011		1402
1012	static void	1403	static void
1013	api_transfer (SV prev_sv, SV next_sv)	1404	api_transfer (SV prev_sv, SV next_sv)
1014	{	1405	{
1015	dTHX;	1406	dTHX;
1016	struct transfer_args ta;	1407	struct transfer_args ta;
1017		1408
1018	prepare_transfer (aTHX_ &ta, prev_sv, next_sv);	1409	prepare_transfer (aTHX_ &ta, prev_sv, next_sv);
1019	TRANSFER (ta);	1410	TRANSFER (ta, 1);
1020	}
1021
1022	static int
1023	api_save (SV *coro_sv, int new_save)
1024	{
1025	dTHX;
1026	struct coro *coro = SvSTATE (coro_sv);
1027	int old_save = coro->save;
1028
1029	if (new_save >= 0)
1030	coro->save = new_save;
1031
1032	return old_save;
1033	}	1411	}
1034		1412
1035	/ Coro ******************************************************************/	1413	/ Coro ******************************************************************/
1036		1414
1037	static void	1415	static void
…		…
1039	{	1417	{
1040	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);
1041	}	1419	}
1042		1420
1043	static SV *	1421	static SV *
1044	coro_deq (pTHX_ int min_prio)	1422	coro_deq (pTHX)
1045	{	1423	{
1046	int prio = PRIO_MAX - PRIO_MIN;	1424	int prio;
1047		1425
1048	min_prio -= PRIO_MIN;
1049	if (min_prio < 0)
1050	min_prio = 0;
1051
1052	for (prio = PRIO_MAX - PRIO_MIN + 1; --prio >= min_prio; )	1426	for (prio = PRIO_MAX - PRIO_MIN + 1; --prio >= 0; )
1053	if (AvFILLp (coro_ready [prio]) >= 0)	1427	if (AvFILLp (coro_ready [prio]) >= 0)
1054	return av_shift (coro_ready [prio]);	1428	return av_shift (coro_ready [prio]);
1055		1429
1056	return 0;	1430	return 0;
1057	}	1431	}
…		…
1059	static int	1433	static int
1060	api_ready (SV *coro_sv)	1434	api_ready (SV *coro_sv)
1061	{	1435	{
1062	dTHX;	1436	dTHX;
1063	struct coro *coro;	1437	struct coro *coro;
		1438	SV *sv_hook;
		1439	void (*xs_hook)(void);
1064		1440
1065	if (SvROK (coro_sv))	1441	if (SvROK (coro_sv))
1066	coro_sv = SvRV (coro_sv);	1442	coro_sv = SvRV (coro_sv);
1067		1443
1068	coro = SvSTATE (coro_sv);	1444	coro = SvSTATE (coro_sv);
…		…
1071	return 0;	1447	return 0;
1072		1448
1073	coro->flags \|= CF_READY;	1449	coro->flags \|= CF_READY;
1074		1450
1075	LOCK;	1451	LOCK;
		1452
		1453	sv_hook = coro_nready ? 0 : coro_readyhook;
		1454	xs_hook = coro_nready ? 0 : coroapi.readyhook;
		1455
1076	coro_enq (aTHX_ SvREFCNT_inc (coro_sv));	1456	coro_enq (aTHX_ SvREFCNT_inc_NN (coro_sv));
1077	++coro_nready;	1457	++coro_nready;
		1458
1078	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 ();
1079		1479
1080	return 1;	1480	return 1;
1081	}	1481	}
1082		1482
1083	static int	1483	static int
…		…
1093	SV prev_sv, next_sv;	1493	SV prev_sv, next_sv;
1094		1494
1095	for (;;)	1495	for (;;)
1096	{	1496	{
1097	LOCK;	1497	LOCK;
1098	next_sv = coro_deq (aTHX_ PRIO_MIN);	1498	next_sv = coro_deq (aTHX);
1099		1499
1100	/* nothing to schedule: call the idle handler */	1500	/* nothing to schedule: call the idle handler */
1101	if (!next_sv)	1501	if (expect_false (!next_sv))
1102	{	1502	{
1103	dSP;	1503	dSP;
1104	UNLOCK;	1504	UNLOCK;
1105		1505
1106	ENTER;	1506	ENTER;
1107	SAVETMPS;	1507	SAVETMPS;
1108		1508
1109	PUSHMARK (SP);	1509	PUSHMARK (SP);
1110	PUTBACK;	1510	PUTBACK;
1111	call_sv (get_sv ("Coro::idle", FALSE), G_DISCARD);	1511	call_sv (get_sv ("Coro::idle", FALSE), G_DISCARD);
		1512	SPAGAIN;
1112		1513
1113	FREETMPS;	1514	FREETMPS;
1114	LEAVE;	1515	LEAVE;
1115	continue;	1516	continue;
1116	}	1517	}
1117		1518
1118	ta->next = SvSTATE (next_sv);	1519	ta->next = SvSTATE (next_sv);
1119		1520
1120	/* cannot transfer to destroyed coros, skip and look for next */	1521	/* cannot transfer to destroyed coros, skip and look for next */
1121	if (ta->next->flags & CF_DESTROYED)	1522	if (expect_false (ta->next->flags & CF_DESTROYED))
1122	{	1523	{
1123	UNLOCK;	1524	UNLOCK;
1124	SvREFCNT_dec (next_sv);	1525	SvREFCNT_dec (next_sv);
1125	/* coro_nready is already taken care of by destroy */	1526	/* coro_nready is already taken care of by destroy */
1126	continue;	1527	continue;
…		…
1131	break;	1532	break;
1132	}	1533	}
1133		1534
1134	/* free this only after the transfer */	1535	/* free this only after the transfer */
1135	prev_sv = SvRV (coro_current);	1536	prev_sv = SvRV (coro_current);
1136	SvRV_set (coro_current, next_sv);
1137	ta->prev = SvSTATE (prev_sv);	1537	ta->prev = SvSTATE (prev_sv);
1138		1538	TRANSFER_CHECK (*ta);
1139	assert (ta->next->flags & CF_READY);	1539	assert (ta->next->flags & CF_READY);
1140	ta->next->flags &= ~CF_READY;	1540	ta->next->flags &= ~CF_READY;
		1541	SvRV_set (coro_current, next_sv);
1141		1542
1142	LOCK;	1543	LOCK;
1143	free_coro_mortal (aTHX);	1544	free_coro_mortal (aTHX);
1144	coro_mortal = prev_sv;	1545	coro_mortal = prev_sv;
1145	UNLOCK;	1546	UNLOCK;
…		…
1171	{	1572	{
1172	dTHX;	1573	dTHX;
1173	struct transfer_args ta;	1574	struct transfer_args ta;
1174		1575
1175	prepare_schedule (aTHX_ &ta);	1576	prepare_schedule (aTHX_ &ta);
1176	TRANSFER (ta);	1577	TRANSFER (ta, 1);
1177	}	1578	}
1178		1579
1179	static int	1580	static int
1180	api_cede (void)	1581	api_cede (void)
1181	{	1582	{
1182	dTHX;	1583	dTHX;
1183	struct transfer_args ta;	1584	struct transfer_args ta;
1184		1585
1185	prepare_cede (aTHX_ &ta);	1586	prepare_cede (aTHX_ &ta);
1186		1587
1187	if (ta.prev != ta.next)	1588	if (expect_true (ta.prev != ta.next))
1188	{	1589	{
1189	TRANSFER (ta);	1590	TRANSFER (ta, 1);
1190	return 1;	1591	return 1;
1191	}	1592	}
1192	else	1593	else
1193	return 0;	1594	return 0;
1194	}	1595	}
…		…
1199	dTHX;	1600	dTHX;
1200	struct transfer_args ta;	1601	struct transfer_args ta;
1201		1602
1202	if (prepare_cede_notself (aTHX_ &ta))	1603	if (prepare_cede_notself (aTHX_ &ta))
1203	{	1604	{
1204	TRANSFER (ta);	1605	TRANSFER (ta, 1);
1205	return 1;	1606	return 1;
1206	}	1607	}
1207	else	1608	else
1208	return 0;	1609	return 0;
1209	}	1610	}
1210		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
1211	MODULE = Coro::State PACKAGE = Coro::State	1730	MODULE = Coro::State PACKAGE = Coro::State PREFIX = api_
1212		1731
1213	PROTOTYPES: DISABLE	1732	PROTOTYPES: DISABLE
1214		1733
1215	BOOT:	1734	BOOT:
1216	{	1735	{
1217	#ifdef USE_ITHREADS	1736	#ifdef USE_ITHREADS
1218	MUTEX_INIT (&coro_mutex);	1737	MUTEX_INIT (&coro_mutex);
1219	#endif	1738	#endif
1220	BOOT_PAGESIZE;	1739	BOOT_PAGESIZE;
1221		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
1222	coro_state_stash = gv_stashpv ("Coro::State", TRUE);	1752	coro_state_stash = gv_stashpv ("Coro::State", TRUE);
1223		1753
1224	newCONSTSUB (coro_state_stash, "SAVE_DEFAV", newSViv (CORO_SAVE_DEFAV));	1754	newCONSTSUB (coro_state_stash, "CC_TRACE" , newSViv (CC_TRACE));
1225	newCONSTSUB (coro_state_stash, "SAVE_DEFSV", newSViv (CORO_SAVE_DEFSV));	1755	newCONSTSUB (coro_state_stash, "CC_TRACE_SUB" , newSViv (CC_TRACE_SUB));
1226	newCONSTSUB (coro_state_stash, "SAVE_ERRSV", newSViv (CORO_SAVE_ERRSV));
1227	newCONSTSUB (coro_state_stash, "SAVE_IRSSV", newSViv (CORO_SAVE_IRSSV));
1228	newCONSTSUB (coro_state_stash, "SAVE_DEFFH", newSViv (CORO_SAVE_DEFFH));
1229	newCONSTSUB (coro_state_stash, "SAVE_DEF", newSViv (CORO_SAVE_DEF));	1756	newCONSTSUB (coro_state_stash, "CC_TRACE_LINE", newSViv (CC_TRACE_LINE));
1230	newCONSTSUB (coro_state_stash, "SAVE_ALL", newSViv (CORO_SAVE_ALL));	1757	newCONSTSUB (coro_state_stash, "CC_TRACE_ALL" , newSViv (CC_TRACE_ALL));
1231		1758
1232	main_mainstack = PL_mainstack;	1759	main_mainstack = PL_mainstack;
1233	main_top_env = PL_top_env;	1760	main_top_env = PL_top_env;
1234		1761
1235	while (main_top_env->je_prev)	1762	while (main_top_env->je_prev)
1236	main_top_env = main_top_env->je_prev;	1763	main_top_env = main_top_env->je_prev;
1237		1764
1238	coroapi.ver = CORO_API_VERSION;	1765	coroapi.ver = CORO_API_VERSION;
		1766	coroapi.rev = CORO_API_REVISION;
1239	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	}
1240		1777
1241	assert (("PRIO_NORMAL must be 0", !PRIO_NORMAL));	1778	assert (("PRIO_NORMAL must be 0", !PRIO_NORMAL));
1242	}	1779	}
1243		1780
1244	SV *	1781	SV *
1245	new (char *klass, ...)	1782	new (char *klass, ...)
1246	CODE:	1783	CODE:
1247	{	1784	{
1248	struct coro *coro;	1785	struct coro *coro;
		1786	MAGIC *mg;
1249	HV *hv;	1787	HV *hv;
1250	int i;	1788	int i;
1251		1789
1252	Newz (0, coro, 1, struct coro);	1790	Newz (0, coro, 1, struct coro);
1253	coro->args = newAV ();	1791	coro->args = newAV ();
1254	coro->save = CORO_SAVE_DEF;
1255	coro->flags = CF_NEW;	1792	coro->flags = CF_NEW;
1256		1793
1257	if (coro_first) coro_first->prev = coro;	1794	if (coro_first) coro_first->prev = coro;
1258	coro->next = coro_first;	1795	coro->next = coro_first;
1259	coro_first = coro;	1796	coro_first = coro;
1260		1797
1261	coro->hv = hv = newHV ();	1798	coro->hv = hv = newHV ();
1262	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;
1263	RETVAL = sv_bless (newRV_noinc ((SV *)hv), gv_stashpv (klass, 1));	1801	RETVAL = sv_bless (newRV_noinc ((SV *)hv), gv_stashpv (klass, 1));
1264		1802
		1803	av_extend (coro->args, items - 1);
1265	for (i = 1; i < items; i++)	1804	for (i = 1; i < items; i++)
1266	av_push (coro->args, newSVsv (ST (i)));	1805	av_push (coro->args, newSVsv (ST (i)));
1267	}	1806	}
1268	OUTPUT:	1807	OUTPUT:
1269	RETVAL	1808	RETVAL
1270		1809
1271	int	1810	# these not obviously related functions are all rolled into the same xs
1272	save (SV *coro, int new_save = -1)	1811	# function to increase chances that they all will call transfer with the same
1273	CODE:	1812	# stack offset
1274	RETVAL = api_save (coro, new_save);
1275	OUTPUT:
1276	RETVAL
1277
1278	int
1279	save_also (SV *coro_sv, int save_also)
1280	CODE:
1281	{
1282	struct coro *coro = SvSTATE (coro_sv);
1283	RETVAL = coro->save;
1284	coro->save \|= save_also;
1285	}
1286	OUTPUT:
1287	RETVAL
1288
1289	void	1813	void
1290	_set_stacklevel (...)	1814	_set_stacklevel (...)
1291	ALIAS:	1815	ALIAS:
1292	Coro::State::transfer = 1	1816	Coro::State::transfer = 1
1293	Coro::schedule = 2	1817	Coro::schedule = 2
…		…
1295	Coro::cede_notself = 4	1819	Coro::cede_notself = 4
1296	CODE:	1820	CODE:
1297	{	1821	{
1298	struct transfer_args ta;	1822	struct transfer_args ta;
1299		1823
		1824	PUTBACK;
1300	switch (ix)	1825	switch (ix)
1301	{	1826	{
1302	case 0:	1827	case 0:
1303	ta.prev = (struct coro )INT2PTR (coro_cctx , SvIV (ST (0)));	1828	ta.prev = (struct coro )INT2PTR (coro_cctx , SvIV (ST (0)));
1304	ta.next = 0;	1829	ta.next = 0;
…		…
1323	if (!prepare_cede_notself (aTHX_ &ta))	1848	if (!prepare_cede_notself (aTHX_ &ta))
1324	XSRETURN_EMPTY;	1849	XSRETURN_EMPTY;
1325		1850
1326	break;	1851	break;
1327	}	1852	}
		1853	SPAGAIN;
1328		1854
1329	BARRIER;	1855	BARRIER;
		1856	PUTBACK;
1330	TRANSFER (ta);	1857	TRANSFER (ta, 0);
1331		1858	SPAGAIN; /* might be the sp of a different coroutine now */
1332	if (GIMME_V != G_VOID && ta.next != ta.prev)	1859	/* be extra careful not to ever do anything after TRANSFER */
1333	XSRETURN_YES;
1334	}	1860	}
1335		1861
1336	bool	1862	bool
1337	_destroy (SV *coro_sv)	1863	_destroy (SV *coro_sv)
1338	CODE:	1864	CODE:
1339	RETVAL = coro_state_destroy (aTHX_ SvSTATE (coro_sv));	1865	RETVAL = coro_state_destroy (aTHX_ SvSTATE (coro_sv));
1340	OUTPUT:	1866	OUTPUT:
1341	RETVAL	1867	RETVAL
1342		1868
1343	void	1869	void
1344	_exit (code)	1870	_exit (int code)
1345	int code
1346	PROTOTYPE: $	1871	PROTOTYPE: $
1347	CODE:	1872	CODE:
1348	_exit (code);	1873	_exit (code);
1349		1874
1350	int	1875	int
…		…
1384	call (Coro::State coro, SV *coderef)	1909	call (Coro::State coro, SV *coderef)
1385	ALIAS:	1910	ALIAS:
1386	eval = 1	1911	eval = 1
1387	CODE:	1912	CODE:
1388	{	1913	{
1389	if (coro->mainstack)	1914	if (coro->mainstack && ((coro->flags & CF_RUNNING) \|\| coro->slot))
1390	{	1915	{
1391	struct coro temp;	1916	struct coro temp;
1392	Zero (&temp, 1, struct coro);
1393	temp.save = CORO_SAVE_ALL;
1394		1917
1395	if (!(coro->flags & CF_RUNNING))	1918	if (!(coro->flags & CF_RUNNING))
1396	{	1919	{
		1920	PUTBACK;
1397	save_perl (aTHX_ &temp);	1921	save_perl (aTHX_ &temp);
1398	load_perl (aTHX_ coro);	1922	load_perl (aTHX_ coro);
1399	}	1923	}
1400		1924
1401	{	1925	{
1402	dSP;	1926	dSP;
1403	ENTER;	1927	ENTER;
1404	SAVETMPS;	1928	SAVETMPS;
		1929	PUTBACK;
		1930	PUSHSTACK;
1405	PUSHMARK (SP);	1931	PUSHMARK (SP);
1406	PUTBACK;	1932
1407	if (ix)	1933	if (ix)
1408	eval_sv (coderef, 0);	1934	eval_sv (coderef, 0);
1409	else	1935	else
1410	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;
1411	SPAGAIN;	1939	SPAGAIN;
1412	FREETMPS;	1940	FREETMPS;
1413	LEAVE;	1941	LEAVE;
1414	PUTBACK;	1942	PUTBACK;
1415	}	1943	}
1416		1944
1417	if (!(coro->flags & CF_RUNNING))	1945	if (!(coro->flags & CF_RUNNING))
1418	{	1946	{
1419	save_perl (aTHX_ coro);	1947	save_perl (aTHX_ coro);
1420	load_perl (aTHX_ &temp);	1948	load_perl (aTHX_ &temp);
		1949	SPAGAIN;
1421	}	1950	}
1422	}	1951	}
1423	}	1952	}
1424		1953
1425	SV *	1954	SV *
1426	is_ready (Coro::State coro)	1955	is_ready (Coro::State coro)
1427	PROTOTYPE: $	1956	PROTOTYPE: $
1428	ALIAS:	1957	ALIAS:
1429	is_ready = CF_READY	1958	is_ready = CF_READY
…		…
1433	CODE:	1962	CODE:
1434	RETVAL = boolSV (coro->flags & ix);	1963	RETVAL = boolSV (coro->flags & ix);
1435	OUTPUT:	1964	OUTPUT:
1436	RETVAL	1965	RETVAL
1437		1966
		1967	void
		1968	api_trace (SV *coro, int flags = CC_TRACE \| CC_TRACE_SUB)
		1969
1438	SV *	1970	SV *
1439	has_stack (Coro::State coro)	1971	has_cctx (Coro::State coro)
1440	PROTOTYPE: $	1972	PROTOTYPE: $
1441	CODE:	1973	CODE:
1442	RETVAL = boolSV (!!coro->cctx);	1974	RETVAL = boolSV (!!coro->cctx);
1443	OUTPUT:	1975	OUTPUT:
1444	RETVAL	1976	RETVAL
1445		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
1446	IV	1986	IV
1447	rss (Coro::State coro)	1987	rss (Coro::State coro)
1448	PROTOTYPE: $	1988	PROTOTYPE: $
		1989	ALIAS:
		1990	usecount = 1
1449	CODE:	1991	CODE:
1450	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	}
1451	OUTPUT:	1997	OUTPUT:
1452	RETVAL	1998	RETVAL
1453		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	}
1454		2028
1455	MODULE = Coro::State PACKAGE = Coro	2029	MODULE = Coro::State PACKAGE = Coro
1456		2030
1457	BOOT:	2031	BOOT:
1458	{	2032	{
1459	int i;	2033	int i;
1460		2034
1461	sv_pool_rss = get_sv ("Coro::POOL_RSS" , TRUE);
1462	sv_pool_size = get_sv ("Coro::POOL_SIZE" , TRUE);
1463	av_async_pool = get_av ("Coro::async_pool", TRUE);	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);
1464		2038
1465	coro_current = get_sv ("Coro::current", FALSE);	2039	coro_current = coro_get_sv (aTHX_ "Coro::current", FALSE);
1466	SvREADONLY_on (coro_current);	2040	SvREADONLY_on (coro_current);
1467		2041
1468	coro_stash = gv_stashpv ("Coro", TRUE);	2042	coro_stash = gv_stashpv ("Coro", TRUE);
1469		2043
1470	newCONSTSUB (coro_stash, "PRIO_MAX", newSViv (PRIO_MAX));	2044	newCONSTSUB (coro_stash, "PRIO_MAX", newSViv (PRIO_MAX));
1471	newCONSTSUB (coro_stash, "PRIO_HIGH", newSViv (PRIO_HIGH));	2045	newCONSTSUB (coro_stash, "PRIO_HIGH", newSViv (PRIO_HIGH));
1472	newCONSTSUB (coro_stash, "PRIO_NORMAL", newSViv (PRIO_NORMAL));	2046	newCONSTSUB (coro_stash, "PRIO_NORMAL", newSViv (PRIO_NORMAL));
1473	newCONSTSUB (coro_stash, "PRIO_LOW", newSViv (PRIO_LOW));	2047	newCONSTSUB (coro_stash, "PRIO_LOW", newSViv (PRIO_LOW));
…		…
1476		2050
1477	for (i = PRIO_MAX - PRIO_MIN + 1; i--; )	2051	for (i = PRIO_MAX - PRIO_MIN + 1; i--; )
1478	coro_ready[i] = newAV ();	2052	coro_ready[i] = newAV ();
1479		2053
1480	{	2054	{
1481	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 */
1482		2057
1483	coroapi.schedule = api_schedule;	2058	coroapi.schedule = api_schedule;
1484	coroapi.save = api_save;
1485	coroapi.cede = api_cede;	2059	coroapi.cede = api_cede;
1486	coroapi.cede_notself = api_cede_notself;	2060	coroapi.cede_notself = api_cede_notself;
1487	coroapi.ready = api_ready;	2061	coroapi.ready = api_ready;
1488	coroapi.is_ready = api_is_ready;	2062	coroapi.is_ready = api_is_ready;
1489	coroapi.nready = &coro_nready;	2063	coroapi.nready = &coro_nready;
…		…
1498	void	2072	void
1499	_set_current (SV *current)	2073	_set_current (SV *current)
1500	PROTOTYPE: $	2074	PROTOTYPE: $
1501	CODE:	2075	CODE:
1502	SvREFCNT_dec (SvRV (coro_current));	2076	SvREFCNT_dec (SvRV (coro_current));
1503	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;
1504		2087
1505	int	2088	int
1506	prio (Coro::State coro, int newprio = 0)	2089	prio (Coro::State coro, int newprio = 0)
1507	ALIAS:	2090	ALIAS:
1508	nice = 1	2091	nice = 1
…		…
1543	# for async_pool speedup	2126	# for async_pool speedup
1544	void	2127	void
1545	_pool_1 (SV *cb)	2128	_pool_1 (SV *cb)
1546	CODE:	2129	CODE:
1547	{	2130	{
1548	int i, len;	2131	struct coro *coro = SvSTATE (coro_current);
1549	HV hv = (HV )SvRV (coro_current);	2132	HV hv = (HV )SvRV (coro_current);
1550	AV *defav = GvAV (PL_defgv);	2133	AV *defav = GvAV (PL_defgv);
1551	SV *invoke = hv_delete (hv, "_invoke", sizeof ("_invoke") - 1, 0);	2134	SV *invoke = hv_delete (hv, "_invoke", sizeof ("_invoke") - 1, 0);
1552	AV *invoke_av;	2135	AV *invoke_av;
		2136	int i, len;
1553		2137
1554	if (!invoke)	2138	if (!invoke)
		2139	{
		2140	SV *old = PL_diehook;
		2141	PL_diehook = 0;
		2142	SvREFCNT_dec (old);
1555	croak ("\3terminate\2\n");	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);
1556		2148
1557	hv_store (hv, "desc", sizeof ("desc") - 1,	2149	hv_store (hv, "desc", sizeof ("desc") - 1,
1558	newSVpvn ("[async_pool]", sizeof ("[async_pool]") - 1), 0);	2150	newSVpvn ("[async_pool]", sizeof ("[async_pool]") - 1), 0);
1559		2151
1560	invoke_av = (AV *)SvRV (invoke);	2152	invoke_av = (AV *)SvRV (invoke);
…		…
1564		2156
1565	if (len > 0)	2157	if (len > 0)
1566	{	2158	{
1567	av_fill (defav, len - 1);	2159	av_fill (defav, len - 1);
1568	for (i = 0; i < len; ++i)	2160	for (i = 0; i < len; ++i)
1569	av_store (defav, i, SvREFCNT_inc (AvARRAY (invoke_av)[i + 1]));	2161	av_store (defav, i, SvREFCNT_inc_NN (AvARRAY (invoke_av)[i + 1]));
1570	}	2162	}
1571		2163
1572	SvREFCNT_dec (invoke);	2164	SvREFCNT_dec (invoke);
1573	}	2165	}
1574		2166
…		…
1578	{	2170	{
1579	struct coro *coro = SvSTATE (coro_current);	2171	struct coro *coro = SvSTATE (coro_current);
1580		2172
1581	sv_setsv (cb, &PL_sv_undef);	2173	sv_setsv (cb, &PL_sv_undef);
1582		2174
		2175	SvREFCNT_dec ((SV )PL_defoutgv); PL_defoutgv = (GV )coro->saved_deffh;
		2176	coro->saved_deffh = 0;
		2177
1583	if (coro_rss (coro) > SvIV (sv_pool_rss)	2178	if (coro_rss (aTHX_ coro) > SvIV (sv_pool_rss)
1584	\|\| av_len (av_async_pool) + 1 >= SvIV (sv_pool_size))	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);
1585	croak ("\3terminate\2\n");	2184	croak ("\3async_pool terminate\2\n");
		2185	}
1586		2186
1587	av_clear (GvAV (PL_defgv));	2187	av_clear (GvAV (PL_defgv));
1588	hv_store ((HV *)SvRV (coro_current), "desc", sizeof ("desc") - 1,	2188	hv_store ((HV *)SvRV (coro_current), "desc", sizeof ("desc") - 1,
1589	newSVpvn ("[async_pool idle]", sizeof ("[async_pool idle]") - 1), 0);	2189	newSVpvn ("[async_pool idle]", sizeof ("[async_pool idle]") - 1), 0);
1590	coro->save = CORO_SAVE_DEF;	2190
1591	coro->prio = 0;	2191	coro->prio = 0;
		2192
		2193	if (coro->cctx && (coro->cctx->flags & CC_TRACE))
		2194	api_trace (coro_current, 0);
		2195
1592	av_push (av_async_pool, newSVsv (coro_current));	2196	av_push (av_async_pool, newSVsv (coro_current));
1593	}	2197	}
1594		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
1595		2247
1596	MODULE = Coro::State PACKAGE = Coro::AIO	2248	MODULE = Coro::State PACKAGE = Coro::AIO
1597		2249
1598	SV *	2250	void
1599	_get_state ()	2251	_get_state (SV *self)
1600	CODE:	2252	PPCODE:
1601	{	2253	{
1602	struct io_state *data;	2254	AV *defav = GvAV (PL_defgv);
1603		2255	AV *av = newAV ();
		2256	int i;
1604	RETVAL = newSV (sizeof (struct io_state));	2257	SV *data_sv = newSV (sizeof (struct io_state));
1605	data = (struct io_state *)SvPVX (RETVAL);	2258	struct io_state data = (struct io_state )SvPVX (data_sv);
1606	SvCUR_set (RETVAL, sizeof (struct io_state));	2259	SvCUR_set (data_sv, sizeof (struct io_state));
1607	SvPOK_only (RETVAL);	2260	SvPOK_only (data_sv);
1608		2261
1609	data->errorno = errno;	2262	data->errorno = errno;
1610	data->laststype = PL_laststype;	2263	data->laststype = PL_laststype;
1611	data->laststatval = PL_laststatval;	2264	data->laststatval = PL_laststatval;
1612	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);
1613	}	2277	}
1614	OUTPUT:
1615	RETVAL
1616		2278
1617	void	2279	void
1618	_set_state (char *data_)	2280	_set_state (SV *state)
1619	PROTOTYPE: $	2281	PROTOTYPE: $
1620	CODE:	2282	PPCODE:
1621	{	2283	{
1622	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;
1623		2287
1624	errno = data->errorno;	2288	errno = data->errorno;
1625	PL_laststype = data->laststype;	2289	PL_laststype = data->laststype;
1626	PL_laststatval = data->laststatval;	2290	PL_laststatval = data->laststatval;
1627	PL_statcache = data->statcache;	2291	PL_statcache = data->statcache;
1628	}
1629		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);

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Comparing Coro/Coro/State.xs (file contents): Revision 1.164 by root, Tue Sep 25 01:47:23 2007 UTC vs. Revision 1.249 by root, Tue Sep 30 17:12:35 2008 UTC

Diff Legend

Comparing Coro/Coro/State.xs (file contents):
Revision 1.164 by root, Tue Sep 25 01:47:23 2007 UTC vs.
Revision 1.249 by root, Tue Sep 30 17:12:35 2008 UTC