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/cvs/Coro/Coro/State.xs

Comparing Coro/Coro/State.xs (file contents):
Revision 1.227 by root, Sat Apr 5 22:29:54 2008 UTC vs.
Revision 1.264 by root, Fri Nov 14 02:29:09 2008 UTC

…		…
4	#define PERL_EXT	4	#define PERL_EXT
5		5
6	#include "EXTERN.h"	6	#include "EXTERN.h"
7	#include "perl.h"	7	#include "perl.h"
8	#include "XSUB.h"	8	#include "XSUB.h"
		9	#include "perliol.h"
9		10
10	#include "patchlevel.h"	11	#include "patchlevel.h"
11		12
12	#include <stdio.h>	13	#include <stdio.h>
13	#include <errno.h>	14	#include <errno.h>
14	#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
15	#include <inttypes.h> /* portable stdint.h */	23	# include <inttypes.h> /* most portable stdint.h */
		24	#endif
16		25
17	#ifdef HAVE_MMAP	26	#ifdef HAVE_MMAP
18	# include <unistd.h>	27	# include <unistd.h>
19	# include <sys/mman.h>	28	# include <sys/mman.h>
20	# ifndef MAP_ANONYMOUS	29	# ifndef MAP_ANONYMOUS
…		…
37	# define BOOT_PAGESIZE (void)0	46	# define BOOT_PAGESIZE (void)0
38	#endif	47	#endif
39		48
40	#if CORO_USE_VALGRIND	49	#if CORO_USE_VALGRIND
41	# include <valgrind/valgrind.h>	50	# include <valgrind/valgrind.h>
42	# define REGISTER_STACK(cctx,start,end) (cctx)->valgrind_id = VALGRIND_STACK_REGISTER ((start), (end))
43	#else
44	# define REGISTER_STACK(cctx,start,end)
45	#endif	51	#endif
46		52
47	/* the maximum number of idle cctx that will be pooled */	53	/* the maximum number of idle cctx that will be pooled */
48	#define MAX_IDLE_CCTX 8	54	static int cctx_max_idle = 4;
49		55
50	#define PERL_VERSION_ATLEAST(a,b,c) \	56	#define PERL_VERSION_ATLEAST(a,b,c) \
51	(PERL_REVISION > (a) \	57	(PERL_REVISION > (a) \
52	|| (PERL_REVISION == (a) \	58	|| (PERL_REVISION == (a) \
53	&& (PERL_VERSION > (b) \	59	&& (PERL_VERSION > (b) \
…		…
72	# ifndef IS_PADCONST	78	# ifndef IS_PADCONST
73	# define IS_PADCONST(v) 0	79	# define IS_PADCONST(v) 0
74	# endif	80	# endif
75	#endif	81	#endif
76		82
		83	/* 5.11 */
		84	#ifndef CxHASARGS
		85	# define CxHASARGS(cx) (cx)->blk_sub.hasargs
		86	#endif
		87
		88	/* 5.10.0 */
		89	#ifndef SvREFCNT_inc_NN
		90	# define SvREFCNT_inc_NN(sv) SvREFCNT_inc (sv)
		91	#endif
		92
77	/* 5.8.8 */	93	/* 5.8.8 */
78	#ifndef GV_NOTQUAL	94	#ifndef GV_NOTQUAL
79	# define GV_NOTQUAL 0	95	# define GV_NOTQUAL 0
80	#endif	96	#endif
81	#ifndef newSV	97	#ifndef newSV
82	# define newSV(l) NEWSV(0,l)	98	# define newSV(l) NEWSV(0,l)
83	#endif
84
85	/* 5.11 */
86	#ifndef CxHASARGS
87	# define CxHASARGS(cx) (cx)->blk_sub.hasargs
88	#endif	99	#endif
89		100
90	/* 5.8.7 */	101	/* 5.8.7 */
91	#ifndef SvRV_set	102	#ifndef SvRV_set
92	# define SvRV_set(s,v) SvRV(s) = (v)	103	# define SvRV_set(s,v) SvRV(s) = (v)
…		…
112		123
113	#define IN_DESTRUCT (PL_main_cv == Nullcv)	124	#define IN_DESTRUCT (PL_main_cv == Nullcv)
114		125
115	#if __GNUC__ >= 3	126	#if __GNUC__ >= 3
116	# define attribute(x) __attribute__(x)	127	# define attribute(x) __attribute__(x)
117	# define BARRIER __asm__ __volatile__ ("" : : : "memory")
118	# define expect(expr,value) __builtin_expect ((expr),(value))	128	# define expect(expr,value) __builtin_expect ((expr),(value))
		129	# define INLINE static inline
119	#else	130	#else
120	# define attribute(x)	131	# define attribute(x)
121	# define BARRIER
122	# define expect(expr,value) (expr)	132	# define expect(expr,value) (expr)
		133	# define INLINE static
123	#endif	134	#endif
124		135
125	#define expect_false(expr) expect ((expr) != 0, 0)	136	#define expect_false(expr) expect ((expr) != 0, 0)
126	#define expect_true(expr) expect ((expr) != 0, 1)	137	#define expect_true(expr) expect ((expr) != 0, 1)
127		138
128	#define NOINLINE attribute ((noinline))	139	#define NOINLINE attribute ((noinline))
129		140
130	#include "CoroAPI.h"	141	#include "CoroAPI.h"
131		142
132	#ifdef USE_ITHREADS	143	#ifdef USE_ITHREADS
		144
133	static perl_mutex coro_mutex;	145	static perl_mutex coro_lock;
134	# define LOCK do { MUTEX_LOCK (&coro_mutex); } while (0)	146	# define LOCK do { MUTEX_LOCK (&coro_lock); } while (0)
135	# define UNLOCK do { MUTEX_UNLOCK (&coro_mutex); } while (0)	147	# define UNLOCK do { MUTEX_UNLOCK (&coro_lock); } while (0)
		148	# if CORO_PTHREAD
		149	static void *coro_thx;
		150	# endif
		151
136	#else	152	#else
		153
137	# define LOCK (void)0	154	# define LOCK (void)0
138	# define UNLOCK (void)0	155	# define UNLOCK (void)0
		156
139	#endif	157	#endif
		158
		159	# undef LOCK
		160	# define LOCK (void)0
		161	# undef UNLOCK
		162	# define UNLOCK (void)0
140		163
141	/* helper storage struct for Coro::AIO */	164	/* helper storage struct for Coro::AIO */
142	struct io_state	165	struct io_state
143	{	166	{
		167	AV *res;
144	int errorno;	168	int errorno;
145	I32 laststype;	169	I32 laststype; /* U16 in 5.10.0 */
146	int laststatval;	170	int laststatval;
147	Stat_t statcache;	171	Stat_t statcache;
148	};	172	};
149		173
		174	static double (*nvtime)(); /* so why doesn't it take void? */
		175
		176	static U32 cctx_gen;
150	static size_t coro_stacksize = CORO_STACKSIZE;	177	static size_t cctx_stacksize = CORO_STACKSIZE;
151	static struct CoroAPI coroapi;	178	static struct CoroAPI coroapi;
152	static AV *main_mainstack; /* used to differentiate between $main and others */	179	static AV *main_mainstack; /* used to differentiate between $main and others */
153	static JMPENV *main_top_env;	180	static JMPENV *main_top_env;
154	static HV *coro_state_stash, *coro_stash;	181	static HV *coro_state_stash, *coro_stash;
155	static volatile SV *coro_mortal; /* will be freed after next transfer */	182	static volatile SV *coro_mortal; /* will be freed/thrown after next transfer */
		183	static volatile struct coro *transfer_next;
		184
		185	struct transfer_args
		186	{
		187	struct coro *prev, *next;
		188	};
156		189
157	static GV *irsgv; /* $/ */	190	static GV *irsgv; /* $/ */
158	static GV *stdoutgv; /* *STDOUT */	191	static GV *stdoutgv; /* *STDOUT */
159	static SV *rv_diehook;	192	static SV *rv_diehook;
160	static SV *rv_warnhook;	193	static SV *rv_warnhook;
…		…
162		195
163	/* async_pool helper stuff */	196	/* async_pool helper stuff */
164	static SV *sv_pool_rss;	197	static SV *sv_pool_rss;
165	static SV *sv_pool_size;	198	static SV *sv_pool_size;
166	static AV *av_async_pool;	199	static AV *av_async_pool;
		200
		201	/* Coro::AnyEvent */
		202	static SV *sv_activity;
167		203
168	static struct coro_cctx *cctx_first;	204	static struct coro_cctx *cctx_first;
169	static int cctx_count, cctx_idle;	205	static int cctx_count, cctx_idle;
170		206
171	enum {	207	enum {
…		…
189	void *idle_sp; /* sp of top-level transfer/schedule/cede call */	225	void *idle_sp; /* sp of top-level transfer/schedule/cede call */
190	JMPENV *idle_te; /* same as idle_sp, but for top_env, TODO: remove once stable */	226	JMPENV *idle_te; /* same as idle_sp, but for top_env, TODO: remove once stable */
191	JMPENV *top_env;	227	JMPENV *top_env;
192	coro_context cctx;	228	coro_context cctx;
193		229
		230	U32 gen;
194	#if CORO_USE_VALGRIND	231	#if CORO_USE_VALGRIND
195	int valgrind_id;	232	int valgrind_id;
196	#endif	233	#endif
197	unsigned char flags;	234	unsigned char flags;
198	} coro_cctx;	235	} coro_cctx;
…		…
257	#define PRIO_IDLE -3	294	#define PRIO_IDLE -3
258	#define PRIO_MIN -4	295	#define PRIO_MIN -4
259		296
260	/* for Coro.pm */	297	/* for Coro.pm */
261	static SV *coro_current;	298	static SV *coro_current;
		299	static SV *coro_readyhook;
262	static AV *coro_ready [PRIO_MAX-PRIO_MIN+1];	300	static AV *coro_ready [PRIO_MAX - PRIO_MIN + 1];
263	static int coro_nready;	301	static int coro_nready;
264	static struct coro *coro_first;	302	static struct coro *coro_first;
265		303
266	/** lowlevel stuff **********************************************************/	304	/** lowlevel stuff **********************************************************/
267		305
268	static SV *	306	static SV *
269	coro_get_sv (pTHX_ const char *name, int create)	307	coro_get_sv (pTHX_ const char *name, int create)
270	{	308	{
271	#if PERL_VERSION_ATLEAST (5,9,0)	309	#if PERL_VERSION_ATLEAST (5,10,0)
272	/* silence stupid and wrong 5.10 warning that I am unable to switch off */	310	/* silence stupid and wrong 5.10 warning that I am unable to switch off */
273	get_sv (name, create);	311	get_sv (name, create);
274	#endif	312	#endif
275	return get_sv (name, create);	313	return get_sv (name, create);
276	}	314	}
277		315
278	static AV *	316	static AV *
279	coro_get_av (pTHX_ const char *name, int create)	317	coro_get_av (pTHX_ const char *name, int create)
280	{	318	{
281	#if PERL_VERSION_ATLEAST (5,9,0)	319	#if PERL_VERSION_ATLEAST (5,10,0)
282	/* silence stupid and wrong 5.10 warning that I am unable to switch off */	320	/* silence stupid and wrong 5.10 warning that I am unable to switch off */
283	get_av (name, create);	321	get_av (name, create);
284	#endif	322	#endif
285	return get_av (name, create);	323	return get_av (name, create);
286	}	324	}
287		325
288	static HV *	326	static HV *
289	coro_get_hv (pTHX_ const char *name, int create)	327	coro_get_hv (pTHX_ const char *name, int create)
290	{	328	{
291	#if PERL_VERSION_ATLEAST (5,9,0)	329	#if PERL_VERSION_ATLEAST (5,10,0)
292	/* silence stupid and wrong 5.10 warning that I am unable to switch off */	330	/* silence stupid and wrong 5.10 warning that I am unable to switch off */
293	get_hv (name, create);	331	get_hv (name, create);
294	#endif	332	#endif
295	return get_hv (name, create);	333	return get_hv (name, create);
296	}	334	}
…		…
301	AV *padlist = CvPADLIST (cv);	339	AV *padlist = CvPADLIST (cv);
302	AV *newpadlist, *newpad;	340	AV *newpadlist, *newpad;
303		341
304	newpadlist = newAV ();	342	newpadlist = newAV ();
305	AvREAL_off (newpadlist);	343	AvREAL_off (newpadlist);
306	#if PERL_VERSION_ATLEAST (5,9,0)	344	#if PERL_VERSION_ATLEAST (5,10,0)
307	Perl_pad_push (aTHX_ padlist, AvFILLp (padlist) + 1);	345	Perl_pad_push (aTHX_ padlist, AvFILLp (padlist) + 1);
308	#else	346	#else
309	Perl_pad_push (aTHX_ padlist, AvFILLp (padlist) + 1, 1);	347	Perl_pad_push (aTHX_ padlist, AvFILLp (padlist) + 1, 1);
310	#endif	348	#endif
311	newpad = (AV *)AvARRAY (padlist)[AvFILLp (padlist)];	349	newpad = (AV *)AvARRAY (padlist)[AvFILLp (padlist)];
312	--AvFILLp (padlist);	350	--AvFILLp (padlist);
313		351
314	av_store (newpadlist, 0, SvREFCNT_inc (*av_fetch (padlist, 0, FALSE)));	352	av_store (newpadlist, 0, SvREFCNT_inc_NN (*av_fetch (padlist, 0, FALSE)));
315	av_store (newpadlist, 1, (SV *)newpad);	353	av_store (newpadlist, 1, (SV *)newpad);
316		354
317	return newpadlist;	355	return newpadlist;
318	}	356	}
319		357
…		…
349		387
350	/* casting is fun. */	388	/* casting is fun. */
351	while (&PL_sv_undef != (SV *)(padlist = (AV *)av_pop (av)))	389	while (&PL_sv_undef != (SV *)(padlist = (AV *)av_pop (av)))
352	free_padlist (aTHX_ padlist);	390	free_padlist (aTHX_ padlist);
353		391
		392	SvREFCNT_dec (av); /* sv_magicext increased the refcount */
		393
354	return 0;	394	return 0;
355	}	395	}
356		396
357	#define CORO_MAGIC_type_cv PERL_MAGIC_ext	397	#define CORO_MAGIC_type_cv PERL_MAGIC_ext
358	#define CORO_MAGIC_type_state PERL_MAGIC_ext	398	#define CORO_MAGIC_type_state PERL_MAGIC_ext
…		…
360	static MGVTBL coro_cv_vtbl = {	400	static MGVTBL coro_cv_vtbl = {
361	0, 0, 0, 0,	401	0, 0, 0, 0,
362	coro_cv_free	402	coro_cv_free
363	};	403	};
364		404
365	#define CORO_MAGIC(sv,type) \	405	#define CORO_MAGIC(sv, type) \
366	SvMAGIC (sv) \	406	SvMAGIC (sv) \
367	? SvMAGIC (sv)->mg_type == type \	407	? SvMAGIC (sv)->mg_type == type \
368	? SvMAGIC (sv) \	408	? SvMAGIC (sv) \
369	: mg_find (sv, type) \	409	: mg_find (sv, type) \
370	: 0	410	: 0
371		411
372	#define CORO_MAGIC_cv(cv) CORO_MAGIC (((SV *)(cv)), CORO_MAGIC_type_cv)	412	#define CORO_MAGIC_cv(cv) CORO_MAGIC (((SV *)(cv)), CORO_MAGIC_type_cv)
373	#define CORO_MAGIC_state(sv) CORO_MAGIC (((SV *)(sv)), CORO_MAGIC_type_state)	413	#define CORO_MAGIC_state(sv) CORO_MAGIC (((SV *)(sv)), CORO_MAGIC_type_state)
374		414
375	static struct coro *	415	INLINE struct coro *
376	SvSTATE_ (pTHX_ SV *coro)	416	SvSTATE_ (pTHX_ SV *coro)
377	{	417	{
378	HV *stash;	418	HV *stash;
379	MAGIC *mg;	419	MAGIC *mg;
380		420
…		…
408	if (expect_true (mg && AvFILLp ((av = (AV *)mg->mg_obj)) >= 0))	448	if (expect_true (mg && AvFILLp ((av = (AV *)mg->mg_obj)) >= 0))
409	CvPADLIST (cv) = (AV *)AvARRAY (av)[AvFILLp (av)--];	449	CvPADLIST (cv) = (AV *)AvARRAY (av)[AvFILLp (av)--];
410	else	450	else
411	{	451	{
412	#if CORO_PREFER_PERL_FUNCTIONS	452	#if CORO_PREFER_PERL_FUNCTIONS
413	/* this is probably cleaner, but also slower? */	453	/* this is probably cleaner? but also slower! */
		454	/* in practise, it seems to be less stable */
414	CV *cp = Perl_cv_clone (cv);	455	CV *cp = Perl_cv_clone (cv);
415	CvPADLIST (cv) = CvPADLIST (cp);	456	CvPADLIST (cv) = CvPADLIST (cp);
416	CvPADLIST (cp) = 0;	457	CvPADLIST (cp) = 0;
417	SvREFCNT_dec (cp);	458	SvREFCNT_dec (cp);
418	#else	459	#else
…		…
502		543
503	if (expect_true (CvDEPTH (cv)))	544	if (expect_true (CvDEPTH (cv)))
504	{	545	{
505	EXTEND (SP, 3);	546	EXTEND (SP, 3);
506	PUSHs ((SV *)CvPADLIST (cv));	547	PUSHs ((SV *)CvPADLIST (cv));
507	PUSHs (INT2PTR (SV *, CvDEPTH (cv)));	548	PUSHs (INT2PTR (SV *, (IV)CvDEPTH (cv)));
508	PUSHs ((SV *)cv);	549	PUSHs ((SV *)cv);
509		550
510	CvDEPTH (cv) = 0;	551	CvDEPTH (cv) = 0;
511	get_padlist (aTHX_ cv);	552	get_padlist (aTHX_ cv);
512	}	553	}
…		…
592		633
593	New(54,PL_savestack,24,ANY);	634	New(54,PL_savestack,24,ANY);
594	PL_savestack_ix = 0;	635	PL_savestack_ix = 0;
595	PL_savestack_max = 24;	636	PL_savestack_max = 24;
596		637
597	#if !PERL_VERSION_ATLEAST (5,9,0)	638	#if !PERL_VERSION_ATLEAST (5,10,0)
598	New(54,PL_retstack,4,OP*);	639	New(54,PL_retstack,4,OP*);
599	PL_retstack_ix = 0;	640	PL_retstack_ix = 0;
600	PL_retstack_max = 4;	641	PL_retstack_max = 4;
601	#endif	642	#endif
602	}	643	}
…		…
604		645
605	/*	646	/*
606	* destroy the stacks, the callchain etc...	647	* destroy the stacks, the callchain etc...
607	*/	648	*/
608	static void	649	static void
609	coro_destroy_stacks (pTHX)	650	coro_destruct_stacks (pTHX)
610	{	651	{
611	while (PL_curstackinfo->si_next)	652	while (PL_curstackinfo->si_next)
612	PL_curstackinfo = PL_curstackinfo->si_next;	653	PL_curstackinfo = PL_curstackinfo->si_next;
613		654
614	while (PL_curstackinfo)	655	while (PL_curstackinfo)
…		…
625		666
626	Safefree (PL_tmps_stack);	667	Safefree (PL_tmps_stack);
627	Safefree (PL_markstack);	668	Safefree (PL_markstack);
628	Safefree (PL_scopestack);	669	Safefree (PL_scopestack);
629	Safefree (PL_savestack);	670	Safefree (PL_savestack);
630	#if !PERL_VERSION_ATLEAST (5,9,0)	671	#if !PERL_VERSION_ATLEAST (5,10,0)
631	Safefree (PL_retstack);	672	Safefree (PL_retstack);
632	#endif	673	#endif
633	}	674	}
634		675
635	static size_t	676	static size_t
…		…
651	#undef VAR	692	#undef VAR
652	}	693	}
653	else	694	else
654	slot = coro->slot;	695	slot = coro->slot;
655		696
		697	if (slot)
		698	{
656	rss += sizeof (slot->curstackinfo);	699	rss += sizeof (slot->curstackinfo);
657	rss += (slot->curstackinfo->si_cxmax + 1) * sizeof (PERL_CONTEXT);	700	rss += (slot->curstackinfo->si_cxmax + 1) * sizeof (PERL_CONTEXT);
658	rss += sizeof (SV) + sizeof (struct xpvav) + (1 + AvMAX (slot->curstack)) * sizeof (SV *);	701	rss += sizeof (SV) + sizeof (struct xpvav) + (1 + AvMAX (slot->curstack)) * sizeof (SV *);
659	rss += slot->tmps_max * sizeof (SV *);	702	rss += slot->tmps_max * sizeof (SV *);
660	rss += (slot->markstack_max - slot->markstack_ptr) * sizeof (I32);	703	rss += (slot->markstack_max - slot->markstack_ptr) * sizeof (I32);
661	rss += slot->scopestack_max * sizeof (I32);	704	rss += slot->scopestack_max * sizeof (I32);
662	rss += slot->savestack_max * sizeof (ANY);	705	rss += slot->savestack_max * sizeof (ANY);
663		706
664	#if !PERL_VERSION_ATLEAST (5,9,0)	707	#if !PERL_VERSION_ATLEAST (5,10,0)
665	rss += slot->retstack_max * sizeof (OP *);	708	rss += slot->retstack_max * sizeof (OP *);
666	#endif	709	#endif
		710	}
667	}	711	}
668		712
669	return rss;	713	return rss;
670	}	714	}
671		715
672	/** coroutine stack handling ************************************************/	716	/** coroutine stack handling ************************************************/
673		717
674	static int (*orig_sigelem_get) (pTHX_ SV *sv, MAGIC *mg);	718	static int (*orig_sigelem_get) (pTHX_ SV *sv, MAGIC *mg);
675	static int (*orig_sigelem_set) (pTHX_ SV *sv, MAGIC *mg);	719	static int (*orig_sigelem_set) (pTHX_ SV *sv, MAGIC *mg);
		720	static int (*orig_sigelem_clr) (pTHX_ SV *sv, MAGIC *mg);
		721
		722	/* apparently < 5.8.8 */
		723	#ifndef MgPV_nolen_const
		724	#define MgPV_nolen_const(mg) (((((int)(mg)->mg_len)) == HEf_SVKEY) ? \
		725	SvPV_nolen((SV*)((mg)->mg_ptr)) : \
		726	(const char*)(mg)->mg_ptr)
		727	#endif
		728
		729	/* we sometimes need to create the effect of entersub calling us */
		730	#define SSL_HEAD (void)0
		731	/* we somtimes need to create the effect of leaving via entersub */
		732	#define SSL_TAIL (void)0
676		733
677	/*	734	/*
678	* This overrides the default magic get method of %SIG elements.	735	* This overrides the default magic get method of %SIG elements.
679	* The original one doesn't provide for reading back of PL_diehook/PL_warnhook	736	* The original one doesn't provide for reading back of PL_diehook/PL_warnhook
680	* and instead of tryign to save and restore the hash elements, we just provide	737	* and instead of tryign to save and restore the hash elements, we just provide
…		…
688	{	745	{
689	const char *s = MgPV_nolen_const (mg);	746	const char *s = MgPV_nolen_const (mg);
690		747
691	if (*s == '_')	748	if (*s == '_')
692	{	749	{
693	if (strEQ (s, "__DIE__" ) && PL_diehook ) return sv_setsv (sv, PL_diehook ), 0;	750	SV **svp = 0;
694	if (strEQ (s, "__WARN__") && PL_warnhook) return sv_setsv (sv, PL_warnhook), 0;	751
		752	if (strEQ (s, "__DIE__" )) svp = &PL_diehook;
		753	if (strEQ (s, "__WARN__")) svp = &PL_warnhook;
		754
		755	if (svp)
		756	{
		757	sv_setsv (sv, *svp ? *svp : &PL_sv_undef);
		758	return 0;
		759	}
695	}	760	}
696		761
697	return orig_sigelem_get ? orig_sigelem_get (aTHX_ sv, mg) : 0;	762	return orig_sigelem_get ? orig_sigelem_get (aTHX_ sv, mg) : 0;
		763	}
		764
		765	static int
		766	coro_sigelem_clr (pTHX_ SV *sv, MAGIC *mg)
		767	{
		768	const char *s = MgPV_nolen_const (mg);
		769
		770	if (*s == '_')
		771	{
		772	SV **svp = 0;
		773
		774	if (strEQ (s, "__DIE__" )) svp = &PL_diehook;
		775	if (strEQ (s, "__WARN__")) svp = &PL_warnhook;
		776
		777	if (svp)
		778	{
		779	SV *old = *svp;
		780	*svp = 0;
		781	SvREFCNT_dec (old);
		782	return 0;
		783	}
		784	}
		785
		786	return orig_sigelem_clr ? orig_sigelem_clr (aTHX_ sv, mg) : 0;
698	}	787	}
699		788
700	static int	789	static int
701	coro_sigelem_set (pTHX_ SV *sv, MAGIC *mg)	790	coro_sigelem_set (pTHX_ SV *sv, MAGIC *mg)
702	{	791	{
…		…
712	if (svp)	801	if (svp)
713	{	802	{
714	SV *old = *svp;	803	SV *old = *svp;
715	*svp = newSVsv (sv);	804	*svp = newSVsv (sv);
716	SvREFCNT_dec (old);	805	SvREFCNT_dec (old);
717	return;	806	return 0;
718	}	807	}
719	}	808	}
720		809
721	return orig_sigelem_set ? orig_sigelem_set (aTHX_ sv, mg) : 0;	810	return orig_sigelem_set ? orig_sigelem_set (aTHX_ sv, mg) : 0;
722	}	811	}
…		…
736	PL_curpm = 0;	825	PL_curpm = 0;
737	PL_curpad = 0;	826	PL_curpad = 0;
738	PL_localizing = 0;	827	PL_localizing = 0;
739	PL_dirty = 0;	828	PL_dirty = 0;
740	PL_restartop = 0;	829	PL_restartop = 0;
		830	#if PERL_VERSION_ATLEAST (5,10,0)
		831	PL_parser = 0;
		832	#endif
741		833
742	/* recreate the die/warn hooks */	834	/* recreate the die/warn hooks */
743	PL_diehook = 0; SvSetMagicSV (*hv_fetch (hv_sig, "__DIE__" , sizeof ("__DIE__" ) - 1, 1), rv_diehook );	835	PL_diehook = 0; SvSetMagicSV (*hv_fetch (hv_sig, "__DIE__" , sizeof ("__DIE__" ) - 1, 1), rv_diehook );
744	PL_warnhook = 0; SvSetMagicSV (*hv_fetch (hv_sig, "__WARN__", sizeof ("__WARN__") - 1, 1), rv_warnhook);	836	PL_warnhook = 0; SvSetMagicSV (*hv_fetch (hv_sig, "__WARN__", sizeof ("__WARN__") - 1, 1), rv_warnhook);
745		837
746	GvSV (PL_defgv) = newSV (0);	838	GvSV (PL_defgv) = newSV (0);
747	GvAV (PL_defgv) = coro->args; coro->args = 0;	839	GvAV (PL_defgv) = coro->args; coro->args = 0;
748	GvSV (PL_errgv) = newSV (0);	840	GvSV (PL_errgv) = newSV (0);
749	GvSV (irsgv) = newSVpvn ("\n", 1); sv_magic (GvSV (irsgv), (SV *)irsgv, PERL_MAGIC_sv, "/", 0);	841	GvSV (irsgv) = newSVpvn ("\n", 1); sv_magic (GvSV (irsgv), (SV *)irsgv, PERL_MAGIC_sv, "/", 0);
750	PL_rs = newSVsv (GvSV (irsgv));	842	PL_rs = newSVsv (GvSV (irsgv));
751	PL_defoutgv = (GV *)SvREFCNT_inc (stdoutgv);	843	PL_defoutgv = (GV *)SvREFCNT_inc_NN (stdoutgv);
752		844
753	{	845	{
754	dSP;	846	dSP;
755	LOGOP myop;	847	UNOP myop;
756		848
757	Zero (&myop, 1, LOGOP);	849	Zero (&myop, 1, UNOP);
758	myop.op_next = Nullop;	850	myop.op_next = Nullop;
759	myop.op_flags = OPf_WANT_VOID;	851	myop.op_flags = OPf_WANT_VOID;
760		852
761	PUSHMARK (SP);	853	PUSHMARK (SP);
762	XPUSHs (sv_2mortal (av_shift (GvAV (PL_defgv))));	854	XPUSHs (sv_2mortal (av_shift (GvAV (PL_defgv))));
…		…
766	SPAGAIN;	858	SPAGAIN;
767	}	859	}
768		860
769	/* this newly created coroutine might be run on an existing cctx which most	861	/* this newly created coroutine might be run on an existing cctx which most
770	* likely was suspended in set_stacklevel, called from entersub.	862	* likely was suspended in set_stacklevel, called from entersub.
771	* set_stacklevl doesn't do anything on return, but entersub does LEAVE,	863	* set_stacklevel doesn't do anything on return, but entersub does LEAVE,
772	* so we ENTER here for symmetry	864	* so we ENTER here for symmetry.
773	*/	865	*/
774	ENTER;	866	SSL_HEAD;
775	}	867	}
776		868
777	static void	869	static void
778	coro_destroy (pTHX_ struct coro *coro)	870	coro_destruct (pTHX_ struct coro *coro)
779	{	871	{
780	if (!IN_DESTRUCT)	872	if (!IN_DESTRUCT)
781	{	873	{
782	/* restore all saved variables and stuff */	874	/* restore all saved variables and stuff */
783	LEAVE_SCOPE (0);	875	LEAVE_SCOPE (0);
…		…
805	SvREFCNT_dec (PL_warnhook);	897	SvREFCNT_dec (PL_warnhook);
806		898
807	SvREFCNT_dec (coro->saved_deffh);	899	SvREFCNT_dec (coro->saved_deffh);
808	SvREFCNT_dec (coro->throw);	900	SvREFCNT_dec (coro->throw);
809		901
810	coro_destroy_stacks (aTHX);	902	coro_destruct_stacks (aTHX);
811	}	903	}
812		904
813	static void	905	INLINE void
814	free_coro_mortal (pTHX)	906	free_coro_mortal (pTHX)
815	{	907	{
816	if (expect_true (coro_mortal))	908	if (expect_true (coro_mortal))
817	{	909	{
818	SvREFCNT_dec (coro_mortal);	910	SvREFCNT_dec (coro_mortal);
…		…
852	: cx->blk_gimme == G_SCALAR ? bot + 1	944	: cx->blk_gimme == G_SCALAR ? bot + 1
853	: bot;	945	: bot;
854		946
855	av_extend (av, top - bot);	947	av_extend (av, top - bot);
856	while (bot < top)	948	while (bot < top)
857	av_push (av, SvREFCNT_inc (*bot++));	949	av_push (av, SvREFCNT_inc_NN (*bot++));
858		950
859	PL_runops = RUNOPS_DEFAULT;	951	PL_runops = RUNOPS_DEFAULT;
860	ENTER;	952	ENTER;
861	SAVETMPS;	953	SAVETMPS;
862	EXTEND (SP, 3);	954	EXTEND (SP, 3);
…		…
942		1034
943	TAINT_NOT;	1035	TAINT_NOT;
944	return 0;	1036	return 0;
945	}	1037	}
946		1038
		1039	static void
		1040	prepare_set_stacklevel (struct transfer_args *ta, struct coro_cctx *cctx)
		1041	{
		1042	ta->prev = (struct coro *)cctx;
		1043	ta->next = 0;
		1044	}
		1045
947	/* inject a fake call to Coro::State::_cctx_init into the execution */	1046	/* inject a fake call to Coro::State::_cctx_init into the execution */
948	/* _cctx_init should be careful, as it could be called at almost any time */	1047	/* _cctx_init should be careful, as it could be called at almost any time */
949	/* during execution of a perl program */	1048	/* during execution of a perl program */
		1049	/* also initialises PL_top_env */
950	static void NOINLINE	1050	static void NOINLINE
951	cctx_prepare (pTHX_ coro_cctx *cctx)	1051	cctx_prepare (pTHX_ coro_cctx *cctx)
952	{	1052	{
953	dSP;	1053	dSP;
954	LOGOP myop;	1054	UNOP myop;
955		1055
956	PL_top_env = &PL_start_env;	1056	PL_top_env = &PL_start_env;
957		1057
958	if (cctx->flags & CC_TRACE)	1058	if (cctx->flags & CC_TRACE)
959	PL_runops = runops_trace;	1059	PL_runops = runops_trace;
960		1060
961	Zero (&myop, 1, LOGOP);	1061	Zero (&myop, 1, UNOP);
962	myop.op_next = PL_op;	1062	myop.op_next = PL_op;
963	myop.op_flags = OPf_WANT_VOID | OPf_STACKED;	1063	myop.op_flags = OPf_WANT_VOID | OPf_STACKED;
964		1064
965	PUSHMARK (SP);	1065	PUSHMARK (SP);
966	EXTEND (SP, 2);	1066	EXTEND (SP, 2);
967	PUSHs (sv_2mortal (newSViv (PTR2IV (cctx))));	1067	PUSHs (sv_2mortal (newSViv ((IV)cctx)));
968	PUSHs ((SV *)get_cv ("Coro::State::_cctx_init", FALSE));	1068	PUSHs ((SV *)get_cv ("Coro::State::_cctx_init", FALSE));
969	PUTBACK;	1069	PUTBACK;
970	PL_op = (OP *)&myop;	1070	PL_op = (OP *)&myop;
971	PL_op = PL_ppaddr[OP_ENTERSUB](aTHX);	1071	PL_op = PL_ppaddr[OP_ENTERSUB](aTHX);
972	SPAGAIN;	1072	SPAGAIN;
973	}	1073	}
974		1074
		1075	/* the tail of transfer: execute stuff we can only do after a transfer */
		1076	INLINE void
		1077	transfer_tail (pTHX)
		1078	{
		1079	struct coro *next = (struct coro *)transfer_next;
		1080	assert (!(transfer_next = 0)); /* just used for the side effect when asserts are enabled */
		1081	assert (("FATAL: next coroutine was zero in transfer_tail (please report)", next));
		1082
		1083	free_coro_mortal (aTHX);
		1084	UNLOCK;
		1085
		1086	if (expect_false (next->throw))
		1087	{
		1088	SV *exception = sv_2mortal (next->throw);
		1089
		1090	next->throw = 0;
		1091	sv_setsv (ERRSV, exception);
		1092	croak (0);
		1093	}
		1094	}
		1095
975	/*	1096	/*
976	* this is a _very_ stripped down perl interpreter ;)	1097	* this is a _very_ stripped down perl interpreter ;)
977	*/	1098	*/
978	static void	1099	static void
979	cctx_run (void *arg)	1100	cctx_run (void *arg)
980	{	1101	{
		1102	#ifdef USE_ITHREADS
		1103	# if CORO_PTHREAD
		1104	PERL_SET_CONTEXT (coro_thx);
		1105	# endif
		1106	#endif
		1107	{
981	dTHX;	1108	dTHX;
982		1109
983	/* cctx_run is the alternative tail of transfer(), so unlock here. */	1110	/* entersub called ENTER, but we never 'returned', undo that here */
984	UNLOCK;	1111	SSL_TAIL;
985		1112
986	/* we now skip the entersub that lead to transfer() */	1113	/* we now skip the op that did lead to transfer() */
987	PL_op = PL_op->op_next;	1114	PL_op = PL_op->op_next;
988		1115
989	/* inject a fake subroutine call to cctx_init */	1116	/* inject a fake subroutine call to cctx_init */
990	cctx_prepare (aTHX_ (coro_cctx *)arg);	1117	cctx_prepare (aTHX_ (coro_cctx *)arg);
991		1118
		1119	/* cctx_run is the alternative tail of transfer() */
		1120	transfer_tail (aTHX);
		1121
992	/* somebody or something will hit me for both perl_run and PL_restartop */	1122	/* somebody or something will hit me for both perl_run and PL_restartop */
993	PL_restartop = PL_op;	1123	PL_restartop = PL_op;
994	perl_run (PL_curinterp);	1124	perl_run (PL_curinterp);
995		1125
996	/*	1126	/*
997	* If perl-run returns we assume exit() was being called or the coro	1127	* If perl-run returns we assume exit() was being called or the coro
998	* fell off the end, which seems to be the only valid (non-bug)	1128	* fell off the end, which seems to be the only valid (non-bug)
999	* reason for perl_run to return. We try to exit by jumping to the	1129	* reason for perl_run to return. We try to exit by jumping to the
1000	* bootstrap-time "top" top_env, as we cannot restore the "main"	1130	* bootstrap-time "top" top_env, as we cannot restore the "main"
1001	* coroutine as Coro has no such concept	1131	* coroutine as Coro has no such concept
1002	*/	1132	*/
1003	PL_top_env = main_top_env;	1133	PL_top_env = main_top_env;
1004	JMPENV_JUMP (2); /* I do not feel well about the hardcoded 2 at all */	1134	JMPENV_JUMP (2); /* I do not feel well about the hardcoded 2 at all */
		1135	}
1005	}	1136	}
1006		1137
1007	static coro_cctx *	1138	static coro_cctx *
1008	cctx_new ()	1139	cctx_new ()
1009	{	1140	{
1010	coro_cctx *cctx;	1141	coro_cctx *cctx;
		1142
		1143	++cctx_count;
		1144	New (0, cctx, 1, coro_cctx);
		1145
		1146	cctx->gen = cctx_gen;
		1147	cctx->flags = 0;
		1148	cctx->idle_sp = 0; /* can be accessed by transfer between cctx_run and set_stacklevel, on throw */
		1149
		1150	return cctx;
		1151	}
		1152
		1153	/* create a new cctx only suitable as source */
		1154	static coro_cctx *
		1155	cctx_new_empty ()
		1156	{
		1157	coro_cctx *cctx = cctx_new ();
		1158
		1159	cctx->sptr = 0;
		1160	coro_create (&cctx->cctx, 0, 0, 0, 0);
		1161
		1162	return cctx;
		1163	}
		1164
		1165	/* create a new cctx suitable as destination/running a perl interpreter */
		1166	static coro_cctx *
		1167	cctx_new_run ()
		1168	{
		1169	coro_cctx *cctx = cctx_new ();
1011	void *stack_start;	1170	void *stack_start;
1012	size_t stack_size;	1171	size_t stack_size;
1013		1172
1014	++cctx_count;
1015
1016	Newz (0, cctx, 1, coro_cctx);
1017
1018	#if HAVE_MMAP	1173	#if HAVE_MMAP
1019	cctx->ssize = ((coro_stacksize * sizeof (long) + PAGESIZE - 1) / PAGESIZE + CORO_STACKGUARD) * PAGESIZE;	1174	cctx->ssize = ((cctx_stacksize * sizeof (long) + PAGESIZE - 1) / PAGESIZE + CORO_STACKGUARD) * PAGESIZE;
1020	/* mmap supposedly does allocate-on-write for us */	1175	/* mmap supposedly does allocate-on-write for us */
1021	cctx->sptr = mmap (0, cctx->ssize, PROT_EXEC|PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, 0, 0);	1176	cctx->sptr = mmap (0, cctx->ssize, PROT_EXEC|PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, 0, 0);
1022		1177
1023	if (cctx->sptr != (void *)-1)	1178	if (cctx->sptr != (void *)-1)
1024	{	1179	{
1025	# if CORO_STACKGUARD	1180	#if CORO_STACKGUARD
1026	mprotect (cctx->sptr, CORO_STACKGUARD * PAGESIZE, PROT_NONE);	1181	mprotect (cctx->sptr, CORO_STACKGUARD * PAGESIZE, PROT_NONE);
1027	# endif	1182	#endif
1028	stack_start = CORO_STACKGUARD * PAGESIZE + (char *)cctx->sptr;	1183	stack_start = (char *)cctx->sptr + CORO_STACKGUARD * PAGESIZE;
1029	stack_size = cctx->ssize - CORO_STACKGUARD * PAGESIZE;	1184	stack_size = cctx->ssize - CORO_STACKGUARD * PAGESIZE;
1030	cctx->flags |= CC_MAPPED;	1185	cctx->flags |= CC_MAPPED;
1031	}	1186	}
1032	else	1187	else
1033	#endif	1188	#endif
1034	{	1189	{
1035	cctx->ssize = coro_stacksize * (long)sizeof (long);	1190	cctx->ssize = cctx_stacksize * (long)sizeof (long);
1036	New (0, cctx->sptr, coro_stacksize, long);	1191	New (0, cctx->sptr, cctx_stacksize, long);
1037		1192
1038	if (!cctx->sptr)	1193	if (!cctx->sptr)
1039	{	1194	{
1040	perror ("FATAL: unable to allocate stack for coroutine");	1195	perror ("FATAL: unable to allocate stack for coroutine, exiting.");
1041	_exit (EXIT_FAILURE);	1196	_exit (EXIT_FAILURE);
1042	}	1197	}
1043		1198
1044	stack_start = cctx->sptr;	1199	stack_start = cctx->sptr;
1045	stack_size = cctx->ssize;	1200	stack_size = cctx->ssize;
1046	}	1201	}
1047		1202
1048	REGISTER_STACK (cctx, (char *)stack_start, (char *)stack_start + stack_size);	1203	#if CORO_USE_VALGRIND
		1204	cctx->valgrind_id = VALGRIND_STACK_REGISTER ((char *)stack_start, (char *)stack_start + stack_size);
		1205	#endif
		1206
1049	coro_create (&cctx->cctx, cctx_run, (void *)cctx, stack_start, stack_size);	1207	coro_create (&cctx->cctx, cctx_run, (void *)cctx, stack_start, stack_size);
1050		1208
1051	return cctx;	1209	return cctx;
1052	}	1210	}
1053		1211
…		…
1056	{	1214	{
1057	if (!cctx)	1215	if (!cctx)
1058	return;	1216	return;
1059		1217
1060	--cctx_count;	1218	--cctx_count;
		1219	coro_destroy (&cctx->cctx);
1061		1220
		1221	/* coro_transfer creates new, empty cctx's */
		1222	if (cctx->sptr)
		1223	{
1062	#if CORO_USE_VALGRIND	1224	#if CORO_USE_VALGRIND
1063	VALGRIND_STACK_DEREGISTER (cctx->valgrind_id);	1225	VALGRIND_STACK_DEREGISTER (cctx->valgrind_id);
1064	#endif	1226	#endif
1065		1227
1066	#if HAVE_MMAP	1228	#if HAVE_MMAP
1067	if (cctx->flags & CC_MAPPED)	1229	if (cctx->flags & CC_MAPPED)
1068	munmap (cctx->sptr, cctx->ssize);	1230	munmap (cctx->sptr, cctx->ssize);
1069	else	1231	else
1070	#endif	1232	#endif
1071	Safefree (cctx->sptr);	1233	Safefree (cctx->sptr);
		1234	}
1072		1235
1073	Safefree (cctx);	1236	Safefree (cctx);
1074	}	1237	}
1075		1238
1076	/* wether this cctx should be destructed */	1239	/* wether this cctx should be destructed */
1077	#define CCTX_EXPIRED(cctx) ((cctx)->ssize < coro_stacksize || ((cctx)->flags & CC_NOREUSE))	1240	#define CCTX_EXPIRED(cctx) ((cctx)->gen != cctx_gen || ((cctx)->flags & CC_NOREUSE))
1078		1241
1079	static coro_cctx *	1242	static coro_cctx *
1080	cctx_get (pTHX)	1243	cctx_get (pTHX)
1081	{	1244	{
1082	while (expect_true (cctx_first))	1245	while (expect_true (cctx_first))
…		…
1089	return cctx;	1252	return cctx;
1090		1253
1091	cctx_destroy (cctx);	1254	cctx_destroy (cctx);
1092	}	1255	}
1093		1256
1094	return cctx_new ();	1257	return cctx_new_run ();
1095	}	1258	}
1096		1259
1097	static void	1260	static void
1098	cctx_put (coro_cctx *cctx)	1261	cctx_put (coro_cctx *cctx)
1099	{	1262	{
		1263	assert (("FATAL: cctx_put called on non-initialised cctx in Coro (please report)", cctx->sptr));
		1264
1100	/* free another cctx if overlimit */	1265	/* free another cctx if overlimit */
1101	if (expect_false (cctx_idle >= MAX_IDLE_CCTX))	1266	if (expect_false (cctx_idle >= cctx_max_idle))
1102	{	1267	{
1103	coro_cctx *first = cctx_first;	1268	coro_cctx *first = cctx_first;
1104	cctx_first = first->next;	1269	cctx_first = first->next;
1105	--cctx_idle;	1270	--cctx_idle;
1106		1271
…		…
1126	croak ("Coro::State::transfer called with running next Coro::State, but can only transfer to inactive states");	1291	croak ("Coro::State::transfer called with running next Coro::State, but can only transfer to inactive states");
1127		1292
1128	if (expect_false (next->flags & CF_DESTROYED))	1293	if (expect_false (next->flags & CF_DESTROYED))
1129	croak ("Coro::State::transfer called with destroyed next Coro::State, but can only transfer to inactive states");	1294	croak ("Coro::State::transfer called with destroyed next Coro::State, but can only transfer to inactive states");
1130		1295
1131	if (
1132	#if PERL_VERSION_ATLEAST (5,9,0)	1296	#if !PERL_VERSION_ATLEAST (5,10,0)
1133	expect_false (PL_parser && PL_parser->lex_state != LEX_NOTPARSING)
1134	#else
1135	expect_false (PL_lex_state != LEX_NOTPARSING)	1297	if (expect_false (PL_lex_state != LEX_NOTPARSING))
1136	#endif
1137	)
1138	croak ("Coro::State::transfer called while parsing, but this is not supported");	1298	croak ("Coro::State::transfer called while parsing, but this is not supported in your perl version");
		1299	#endif
1139	}	1300	}
1140	}	1301	}
1141		1302
1142	/* always use the TRANSFER macro */	1303	/* always use the TRANSFER macro */
1143	static void NOINLINE	1304	static void NOINLINE
1144	transfer (pTHX_ struct coro *prev, struct coro *next, int force_cctx)	1305	transfer (pTHX_ struct coro *prev, struct coro *next, int force_cctx)
1145	{	1306	{
1146	dSTACKLEVEL;	1307	dSTACKLEVEL;
1147	static volatile int has_throw;
1148		1308
1149	/* sometimes transfer is only called to set idle_sp */	1309	/* sometimes transfer is only called to set idle_sp */
1150	if (expect_false (!next))	1310	if (expect_false (!next))
1151	{	1311	{
1152	((coro_cctx *)prev)->idle_sp = STACKLEVEL;	1312	((coro_cctx *)prev)->idle_sp = STACKLEVEL;
…		…
1156	{	1316	{
1157	coro_cctx *prev__cctx;	1317	coro_cctx *prev__cctx;
1158		1318
1159	if (expect_false (prev->flags & CF_NEW))	1319	if (expect_false (prev->flags & CF_NEW))
1160	{	1320	{
1161	/* create a new empty context */	1321	/* create a new empty/source context */
1162	Newz (0, prev->cctx, 1, coro_cctx);	1322	prev->cctx = cctx_new_empty ();
1163	prev->flags &= ~CF_NEW;	1323	prev->flags &= ~CF_NEW;
1164	prev->flags |= CF_RUNNING;	1324	prev->flags |= CF_RUNNING;
1165	}	1325	}
1166		1326
1167	prev->flags &= ~CF_RUNNING;	1327	prev->flags &= ~CF_RUNNING;
…		…
1182	else	1342	else
1183	load_perl (aTHX_ next);	1343	load_perl (aTHX_ next);
1184		1344
1185	prev__cctx = prev->cctx;	1345	prev__cctx = prev->cctx;
1186		1346
1187	/* possibly "free" the cctx */	1347	/* possibly untie and reuse the cctx */
1188	if (expect_true (	1348	if (expect_true (
1189	prev__cctx->idle_sp == STACKLEVEL	1349	prev__cctx->idle_sp == STACKLEVEL
1190	&& !(prev__cctx->flags & CC_TRACE)	1350	&& !(prev__cctx->flags & CC_TRACE)
1191	&& !force_cctx	1351	&& !force_cctx
1192	))	1352	))
1193	{	1353	{
1194	/* I assume that STACKLEVEL is a stronger indicator than PL_top_env changes */	1354	/* I assume that STACKLEVEL is a stronger indicator than PL_top_env changes */
1195	assert (("ERROR: current top_env must equal previous top_env", PL_top_env == prev__cctx->idle_te));	1355	assert (("FATAL: current top_env must equal previous top_env in Coro (please report)", PL_top_env == prev__cctx->idle_te));
1196		1356
1197	prev->cctx = 0;	1357	prev->cctx = 0;
1198		1358
1199	/* if the cctx is about to be destroyed we need to make sure we won't see it in cctx_get */	1359	/* if the cctx is about to be destroyed we need to make sure we won't see it in cctx_get */
1200	/* without this the next cctx_get might destroy the prev__cctx while still in use */	1360	/* without this the next cctx_get might destroy the prev__cctx while still in use */
…		…
1208	++next->usecount;	1368	++next->usecount;
1209		1369
1210	if (expect_true (!next->cctx))	1370	if (expect_true (!next->cctx))
1211	next->cctx = cctx_get (aTHX);	1371	next->cctx = cctx_get (aTHX);
1212		1372
1213	has_throw = !!next->throw;	1373	assert (("FATAL: transfer_next already nonzero in Coro (please report)", !transfer_next));
		1374	transfer_next = next;
1214		1375
1215	if (expect_false (prev__cctx != next->cctx))	1376	if (expect_false (prev__cctx != next->cctx))
1216	{	1377	{
1217	prev__cctx->top_env = PL_top_env;	1378	prev__cctx->top_env = PL_top_env;
1218	PL_top_env = next->cctx->top_env;	1379	PL_top_env = next->cctx->top_env;
1219	coro_transfer (&prev__cctx->cctx, &next->cctx->cctx);	1380	coro_transfer (&prev__cctx->cctx, &next->cctx->cctx);
1220	}	1381	}
1221		1382
1222	free_coro_mortal (aTHX);	1383	transfer_tail (aTHX);
1223	UNLOCK;
1224
1225	if (expect_false (has_throw))
1226	{
1227	struct coro *coro = SvSTATE (coro_current);
1228
1229	if (coro->throw)
1230	{
1231	SV *exception = coro->throw;
1232	coro->throw = 0;
1233	sv_setsv (ERRSV, exception);
1234	croak (0);
1235	}
1236	}
1237	}	1384	}
1238	}	1385	}
1239
1240	struct transfer_args
1241	{
1242	struct coro *prev, *next;
1243	};
1244		1386
1245	#define TRANSFER(ta, force_cctx) transfer (aTHX_ (ta).prev, (ta).next, (force_cctx))	1387	#define TRANSFER(ta, force_cctx) transfer (aTHX_ (ta).prev, (ta).next, (force_cctx))
1246	#define TRANSFER_CHECK(ta) transfer_check (aTHX_ (ta).prev, (ta).next)	1388	#define TRANSFER_CHECK(ta) transfer_check (aTHX_ (ta).prev, (ta).next)
1247		1389
1248	/** high level stuff ********************************************************/	1390	/** high level stuff ********************************************************/
…		…
1274	croak ("FATAL: tried to destroy currently running coroutine");	1416	croak ("FATAL: tried to destroy currently running coroutine");
1275		1417
1276	save_perl (aTHX_ &temp);	1418	save_perl (aTHX_ &temp);
1277	load_perl (aTHX_ coro);	1419	load_perl (aTHX_ coro);
1278		1420
1279	coro_destroy (aTHX_ coro);	1421	coro_destruct (aTHX_ coro);
1280		1422
1281	load_perl (aTHX_ &temp);	1423	load_perl (aTHX_ &temp);
1282		1424
1283	coro->slot = 0;	1425	coro->slot = 0;
1284	}	1426	}
…		…
1372	static int	1514	static int
1373	api_ready (SV *coro_sv)	1515	api_ready (SV *coro_sv)
1374	{	1516	{
1375	dTHX;	1517	dTHX;
1376	struct coro *coro;	1518	struct coro *coro;
		1519	SV *sv_hook;
		1520	void (*xs_hook)(void);
1377		1521
1378	if (SvROK (coro_sv))	1522	if (SvROK (coro_sv))
1379	coro_sv = SvRV (coro_sv);	1523	coro_sv = SvRV (coro_sv);
1380		1524
1381	coro = SvSTATE (coro_sv);	1525	coro = SvSTATE (coro_sv);
…		…
1384	return 0;	1528	return 0;
1385		1529
1386	coro->flags |= CF_READY;	1530	coro->flags |= CF_READY;
1387		1531
1388	LOCK;	1532	LOCK;
		1533
		1534	sv_hook = coro_nready ? 0 : coro_readyhook;
		1535	xs_hook = coro_nready ? 0 : coroapi.readyhook;
		1536
1389	coro_enq (aTHX_ SvREFCNT_inc (coro_sv));	1537	coro_enq (aTHX_ SvREFCNT_inc_NN (coro_sv));
1390	++coro_nready;	1538	++coro_nready;
		1539
1391	UNLOCK;	1540	UNLOCK;
		1541
		1542	if (sv_hook)
		1543	{
		1544	dSP;
		1545
		1546	ENTER;
		1547	SAVETMPS;
		1548
		1549	PUSHMARK (SP);
		1550	PUTBACK;
		1551	call_sv (sv_hook, G_DISCARD);
		1552	SPAGAIN;
		1553
		1554	FREETMPS;
		1555	LEAVE;
		1556	}
		1557
		1558	if (xs_hook)
		1559	xs_hook ();
1392		1560
1393	return 1;	1561	return 1;
1394	}	1562	}
1395		1563
1396	static int	1564	static int
1397	api_is_ready (SV *coro_sv)	1565	api_is_ready (SV *coro_sv)
1398	{	1566	{
1399	dTHX;	1567	dTHX;
		1568
1400	return !!(SvSTATE (coro_sv)->flags & CF_READY);	1569	return !!(SvSTATE (coro_sv)->flags & CF_READY);
1401	}	1570	}
1402		1571
1403	static void	1572	INLINE void
1404	prepare_schedule (pTHX_ struct transfer_args *ta)	1573	prepare_schedule (pTHX_ struct transfer_args *ta)
1405	{	1574	{
1406	SV *prev_sv, *next_sv;	1575	SV *prev_sv, *next_sv;
1407		1576
1408	for (;;)	1577	for (;;)
…		…
1434	/* cannot transfer to destroyed coros, skip and look for next */	1603	/* cannot transfer to destroyed coros, skip and look for next */
1435	if (expect_false (ta->next->flags & CF_DESTROYED))	1604	if (expect_false (ta->next->flags & CF_DESTROYED))
1436	{	1605	{
1437	UNLOCK;	1606	UNLOCK;
1438	SvREFCNT_dec (next_sv);	1607	SvREFCNT_dec (next_sv);
1439	/* coro_nready is already taken care of by destroy */	1608	/* coro_nready has already been taken care of by destroy */
1440	continue;	1609	continue;
1441	}	1610	}
1442		1611
1443	--coro_nready;	1612	--coro_nready;
1444	UNLOCK;	1613	UNLOCK;
…		…
1447		1616
1448	/* free this only after the transfer */	1617	/* free this only after the transfer */
1449	prev_sv = SvRV (coro_current);	1618	prev_sv = SvRV (coro_current);
1450	ta->prev = SvSTATE (prev_sv);	1619	ta->prev = SvSTATE (prev_sv);
1451	TRANSFER_CHECK (*ta);	1620	TRANSFER_CHECK (*ta);
1452	assert (ta->next->flags & CF_READY);	1621	assert (("FATAL: next coroutine isn't marked as ready in Coro (please report)", ta->next->flags & CF_READY));
1453	ta->next->flags &= ~CF_READY;	1622	ta->next->flags &= ~CF_READY;
1454	SvRV_set (coro_current, next_sv);	1623	SvRV_set (coro_current, next_sv);
1455		1624
1456	LOCK;	1625	LOCK;
1457	free_coro_mortal (aTHX);	1626	free_coro_mortal (aTHX);
1458	coro_mortal = prev_sv;	1627	coro_mortal = prev_sv;
1459	UNLOCK;	1628	UNLOCK;
1460	}	1629	}
1461		1630
1462	static void	1631	INLINE void
1463	prepare_cede (pTHX_ struct transfer_args *ta)	1632	prepare_cede (pTHX_ struct transfer_args *ta)
1464	{	1633	{
1465	api_ready (coro_current);	1634	api_ready (coro_current);
1466	prepare_schedule (aTHX_ ta);	1635	prepare_schedule (aTHX_ ta);
1467	}	1636	}
…		…
1529	struct coro *coro = SvSTATE (coro_sv);	1698	struct coro *coro = SvSTATE (coro_sv);
1530		1699
1531	if (flags & CC_TRACE)	1700	if (flags & CC_TRACE)
1532	{	1701	{
1533	if (!coro->cctx)	1702	if (!coro->cctx)
1534	coro->cctx = cctx_new ();	1703	coro->cctx = cctx_new_run ();
1535	else if (!(coro->cctx->flags & CC_TRACE))	1704	else if (!(coro->cctx->flags & CC_TRACE))
1536	croak ("cannot enable tracing on coroutine with custom stack");	1705	croak ("cannot enable tracing on coroutine with custom stack");
1537		1706
1538	coro->cctx->flags |= CC_NOREUSE | (flags & (CC_TRACE | CC_TRACE_ALL));	1707	coro->cctx->flags |= CC_NOREUSE | (flags & (CC_TRACE | CC_TRACE_ALL));
1539	}	1708	}
…		…
1546	else	1715	else
1547	coro->slot->runops = RUNOPS_DEFAULT;	1716	coro->slot->runops = RUNOPS_DEFAULT;
1548	}	1717	}
1549	}	1718	}
1550		1719
		1720	#if 0
		1721	static int
		1722	coro_gensub_free (pTHX_ SV *sv, MAGIC *mg)
		1723	{
		1724	AV *padlist;
		1725	AV *av = (AV *)mg->mg_obj;
		1726
		1727	abort ();
		1728
		1729	return 0;
		1730	}
		1731
		1732	static MGVTBL coro_gensub_vtbl = {
		1733	0, 0, 0, 0,
		1734	coro_gensub_free
		1735	};
		1736	#endif
		1737
		1738	/*****************************************************************************/
		1739	/* PerlIO::cede */
		1740
		1741	typedef struct
		1742	{
		1743	PerlIOBuf base;
		1744	NV next, every;
		1745	} PerlIOCede;
		1746
		1747	static IV
		1748	PerlIOCede_pushed (pTHX_ PerlIO *f, const char *mode, SV *arg, PerlIO_funcs *tab)
		1749	{
		1750	PerlIOCede *self = PerlIOSelf (f, PerlIOCede);
		1751
		1752	self->every = SvCUR (arg) ? SvNV (arg) : 0.01;
		1753	self->next = nvtime () + self->every;
		1754
		1755	return PerlIOBuf_pushed (aTHX_ f, mode, Nullsv, tab);
		1756	}
		1757
		1758	static SV *
		1759	PerlIOCede_getarg (pTHX_ PerlIO *f, CLONE_PARAMS *param, int flags)
		1760	{
		1761	PerlIOCede *self = PerlIOSelf (f, PerlIOCede);
		1762
		1763	return newSVnv (self->every);
		1764	}
		1765
		1766	static IV
		1767	PerlIOCede_flush (pTHX_ PerlIO *f)
		1768	{
		1769	PerlIOCede *self = PerlIOSelf (f, PerlIOCede);
		1770	double now = nvtime ();
		1771
		1772	if (now >= self->next)
		1773	{
		1774	api_cede ();
		1775	self->next = now + self->every;
		1776	}
		1777
		1778	return PerlIOBuf_flush (aTHX_ f);
		1779	}
		1780
		1781	static PerlIO_funcs PerlIO_cede =
		1782	{
		1783	sizeof(PerlIO_funcs),
		1784	"cede",
		1785	sizeof(PerlIOCede),
		1786	PERLIO_K_DESTRUCT | PERLIO_K_RAW,
		1787	PerlIOCede_pushed,
		1788	PerlIOBuf_popped,
		1789	PerlIOBuf_open,
		1790	PerlIOBase_binmode,
		1791	PerlIOCede_getarg,
		1792	PerlIOBase_fileno,
		1793	PerlIOBuf_dup,
		1794	PerlIOBuf_read,
		1795	PerlIOBuf_unread,
		1796	PerlIOBuf_write,
		1797	PerlIOBuf_seek,
		1798	PerlIOBuf_tell,
		1799	PerlIOBuf_close,
		1800	PerlIOCede_flush,
		1801	PerlIOBuf_fill,
		1802	PerlIOBase_eof,
		1803	PerlIOBase_error,
		1804	PerlIOBase_clearerr,
		1805	PerlIOBase_setlinebuf,
		1806	PerlIOBuf_get_base,
		1807	PerlIOBuf_bufsiz,
		1808	PerlIOBuf_get_ptr,
		1809	PerlIOBuf_get_cnt,
		1810	PerlIOBuf_set_ptrcnt,
		1811	};
		1812
		1813	/*****************************************************************************/
		1814
		1815	static const CV *ssl_cv; /* for quick consistency check */
		1816
		1817	static UNOP ssl_restore; /* restore stack as entersub did, for first-re-run */
		1818	static SV *ssl_arg0;
		1819	static SV *ssl_arg1;
		1820
		1821	/* this restores the stack in the case we patched the entersub, to */
		1822	/* recreate the stack frame as perl will on following calls */
		1823	/* since entersub cleared the stack */
		1824	static OP *
		1825	pp_restore (pTHX)
		1826	{
		1827	dSP;
		1828
		1829	PUSHMARK (SP);
		1830
		1831	EXTEND (SP, 3);
		1832	if (ssl_arg0) PUSHs (sv_2mortal (ssl_arg0)), ssl_arg0 = 0;
		1833	if (ssl_arg1) PUSHs (sv_2mortal (ssl_arg1)), ssl_arg1 = 0;
		1834	PUSHs ((SV *)CvGV (ssl_cv));
		1835
		1836	RETURNOP (ssl_restore.op_first);
		1837	}
		1838
		1839	/* declare prototype */
		1840	XS(XS_Coro__State__set_stacklevel);
		1841
		1842	static OP *
		1843	pp_set_stacklevel (pTHX)
		1844	{
		1845	dSP;
		1846	struct transfer_args ta;
		1847	SV **arg = PL_stack_base + TOPMARK + 1;
		1848	int items = SP - arg; /* args without function object */
		1849
		1850	/* do a quick consistency check on the "function" object, and if it isn't */
		1851	/* for us, divert to the real entersub */
		1852	if (SvTYPE (*sp) != SVt_PVGV || CvXSUB (GvCV (*sp)) != XS_Coro__State__set_stacklevel)
		1853	return PL_ppaddr[OP_ENTERSUB](aTHX);
		1854
		1855	/* pop args */
		1856	SP = PL_stack_base + POPMARK;
		1857
		1858	if (!(PL_op->op_flags & OPf_STACKED))
		1859	{
		1860	/* ampersand-form of call, use @_ instead of stack */
		1861	AV *av = GvAV (PL_defgv);
		1862	arg = AvARRAY (av);
		1863	items = AvFILLp (av) + 1;
		1864	}
		1865
		1866	PUTBACK;
		1867	switch (PL_op->op_private & 7)
		1868	{
		1869	case 0:
		1870	prepare_set_stacklevel (&ta, (struct coro_cctx *)SvIV (arg [0]));
		1871	break;
		1872
		1873	case 1:
		1874	if (items != 2)
		1875	croak ("Coro::State::transfer (prev, next) expects two arguments, not %d.", items);
		1876
		1877	prepare_transfer (aTHX_ &ta, arg [0], arg [1]);
		1878	break;
		1879
		1880	case 2:
		1881	prepare_schedule (aTHX_ &ta);
		1882	break;
		1883
		1884	case 3:
		1885	prepare_cede (aTHX_ &ta);
		1886	break;
		1887
		1888	case 4:
		1889	if (!prepare_cede_notself (aTHX_ &ta))
		1890	RETURN;
		1891
		1892	break;
		1893	}
		1894
		1895	TRANSFER (ta, 0);
		1896	SPAGAIN;
		1897
		1898	skip:
		1899
		1900	RETURN;
		1901	}
		1902
1551	MODULE = Coro::State PACKAGE = Coro::State PREFIX = api_	1903	MODULE = Coro::State PACKAGE = Coro::State PREFIX = api_
1552		1904
1553	PROTOTYPES: DISABLE	1905	PROTOTYPES: DISABLE
1554
1555	BOOT:
1556	{
1557	#ifdef USE_ITHREADS
1558	MUTEX_INIT (&coro_mutex);
1559	#endif
1560	BOOT_PAGESIZE;
1561
1562	irsgv = gv_fetchpv ("/" , GV_ADD|GV_NOTQUAL, SVt_PV);
1563	stdoutgv = gv_fetchpv ("STDOUT", GV_ADD|GV_NOTQUAL, SVt_PVIO);
1564
1565	orig_sigelem_get = PL_vtbl_sigelem.svt_get;
1566	PL_vtbl_sigelem.svt_get = coro_sigelem_get;
1567	orig_sigelem_set = PL_vtbl_sigelem.svt_set;
1568	PL_vtbl_sigelem.svt_set = coro_sigelem_set;
1569
1570	hv_sig = coro_get_hv (aTHX_ "SIG", TRUE);
1571	rv_diehook = newRV_inc ((SV *)gv_fetchpv ("Coro::State::diehook" , 0, SVt_PVCV));
1572	rv_warnhook = newRV_inc ((SV *)gv_fetchpv ("Coro::State::warnhook", 0, SVt_PVCV));
1573
1574	coro_state_stash = gv_stashpv ("Coro::State", TRUE);
1575
1576	newCONSTSUB (coro_state_stash, "CC_TRACE" , newSViv (CC_TRACE));
1577	newCONSTSUB (coro_state_stash, "CC_TRACE_SUB" , newSViv (CC_TRACE_SUB));
1578	newCONSTSUB (coro_state_stash, "CC_TRACE_LINE", newSViv (CC_TRACE_LINE));
1579	newCONSTSUB (coro_state_stash, "CC_TRACE_ALL" , newSViv (CC_TRACE_ALL));
1580
1581	main_mainstack = PL_mainstack;
1582	main_top_env = PL_top_env;
1583
1584	while (main_top_env->je_prev)
1585	main_top_env = main_top_env->je_prev;
1586
1587	coroapi.ver = CORO_API_VERSION;
1588	coroapi.rev = CORO_API_REVISION;
1589	coroapi.transfer = api_transfer;
1590
1591	assert (("PRIO_NORMAL must be 0", !PRIO_NORMAL));
1592	}
1593
1594	SV *
1595	new (char *klass, ...)
1596	CODE:
1597	{
1598	struct coro *coro;
1599	MAGIC *mg;
1600	HV *hv;
1601	int i;
1602
1603	Newz (0, coro, 1, struct coro);
1604	coro->args = newAV ();
1605	coro->flags = CF_NEW;
1606
1607	if (coro_first) coro_first->prev = coro;
1608	coro->next = coro_first;
1609	coro_first = coro;
1610
1611	coro->hv = hv = newHV ();
1612	mg = sv_magicext ((SV *)hv, 0, CORO_MAGIC_type_state, &coro_state_vtbl, (char *)coro, 0);
1613	mg->mg_flags |= MGf_DUP;
1614	RETVAL = sv_bless (newRV_noinc ((SV *)hv), gv_stashpv (klass, 1));
1615
1616	av_extend (coro->args, items - 1);
1617	for (i = 1; i < items; i++)
1618	av_push (coro->args, newSVsv (ST (i)));
1619	}
1620	OUTPUT:
1621	RETVAL
1622		1906
1623	# these not obviously related functions are all rolled into the same xs	1907	# these not obviously related functions are all rolled into the same xs
1624	# function to increase chances that they all will call transfer with the same	1908	# function to increase chances that they all will call transfer with the same
1625	# stack offset	1909	# stack offset
1626	void	1910	void
…		…
1630	Coro::schedule = 2	1914	Coro::schedule = 2
1631	Coro::cede = 3	1915	Coro::cede = 3
1632	Coro::cede_notself = 4	1916	Coro::cede_notself = 4
1633	CODE:	1917	CODE:
1634	{	1918	{
1635	struct transfer_args ta;	1919	assert (("FATAL: ssl call recursion in Coro module (please report)", PL_op->op_ppaddr != pp_set_stacklevel));
1636		1920
1637	PUTBACK;	1921	/* we patch the op, and then re-run the whole call */
1638	switch (ix)	1922	/* we have to put some dummy argument on the stack for this to work */
		1923	/* TODO: walk back the opcode chain (but how?), nuke the pp_gv etc. */
		1924	ssl_restore.op_next = (OP *)&ssl_restore;
		1925	ssl_restore.op_type = OP_NULL;
		1926	ssl_restore.op_ppaddr = pp_restore;
		1927	ssl_restore.op_first = PL_op;
		1928
		1929	ssl_arg0 = items > 0 ? SvREFCNT_inc (ST (0)) : 0;
		1930	ssl_arg1 = items > 1 ? SvREFCNT_inc (ST (1)) : 0;
		1931
		1932	PL_op->op_ppaddr = pp_set_stacklevel;
		1933	PL_op->op_private = PL_op->op_private & ~7 | ix; /* we potentially share our private flags with entersub */
		1934
		1935	PL_op = (OP *)&ssl_restore;
		1936	}
		1937
		1938	BOOT:
		1939	{
		1940	#ifdef USE_ITHREADS
		1941	MUTEX_INIT (&coro_lock);
		1942	# if CORO_PTHREAD
		1943	coro_thx = PERL_GET_CONTEXT;
		1944	# endif
		1945	#endif
		1946	BOOT_PAGESIZE;
		1947
		1948	ssl_cv = get_cv ("Coro::State::_set_stacklevel", 0);
		1949
		1950	irsgv = gv_fetchpv ("/" , GV_ADD|GV_NOTQUAL, SVt_PV);
		1951	stdoutgv = gv_fetchpv ("STDOUT", GV_ADD|GV_NOTQUAL, SVt_PVIO);
		1952
		1953	orig_sigelem_get = PL_vtbl_sigelem.svt_get; PL_vtbl_sigelem.svt_get = coro_sigelem_get;
		1954	orig_sigelem_set = PL_vtbl_sigelem.svt_set; PL_vtbl_sigelem.svt_set = coro_sigelem_set;
		1955	orig_sigelem_clr = PL_vtbl_sigelem.svt_clear; PL_vtbl_sigelem.svt_clear = coro_sigelem_clr;
		1956
		1957	hv_sig = coro_get_hv (aTHX_ "SIG", TRUE);
		1958	rv_diehook = newRV_inc ((SV *)gv_fetchpv ("Coro::State::diehook" , 0, SVt_PVCV));
		1959	rv_warnhook = newRV_inc ((SV *)gv_fetchpv ("Coro::State::warnhook", 0, SVt_PVCV));
		1960
		1961	coro_state_stash = gv_stashpv ("Coro::State", TRUE);
		1962
		1963	newCONSTSUB (coro_state_stash, "CC_TRACE" , newSViv (CC_TRACE));
		1964	newCONSTSUB (coro_state_stash, "CC_TRACE_SUB" , newSViv (CC_TRACE_SUB));
		1965	newCONSTSUB (coro_state_stash, "CC_TRACE_LINE", newSViv (CC_TRACE_LINE));
		1966	newCONSTSUB (coro_state_stash, "CC_TRACE_ALL" , newSViv (CC_TRACE_ALL));
		1967
		1968	main_mainstack = PL_mainstack;
		1969	main_top_env = PL_top_env;
		1970
		1971	while (main_top_env->je_prev)
		1972	main_top_env = main_top_env->je_prev;
		1973
		1974	coroapi.ver = CORO_API_VERSION;
		1975	coroapi.rev = CORO_API_REVISION;
		1976	coroapi.transfer = api_transfer;
		1977
1639	{	1978	{
1640	case 0:	1979	SV **svp = hv_fetch (PL_modglobal, "Time::NVtime", 12, 0);
1641	ta.prev = (struct coro *)INT2PTR (coro_cctx *, SvIV (ST (0)));
1642	ta.next = 0;
1643	break;
1644		1980
1645	case 1:	1981	if (!svp) croak ("Time::HiRes is required");
1646	if (items != 2)	1982	if (!SvIOK (*svp)) croak ("Time::NVtime isn't a function pointer");
1647	croak ("Coro::State::transfer (prev,next) expects two arguments, not %d", items);
1648		1983
1649	prepare_transfer (aTHX_ &ta, ST (0), ST (1));	1984	nvtime = INT2PTR (double (*)(), SvIV (*svp));
1650	break;
1651
1652	case 2:
1653	prepare_schedule (aTHX_ &ta);
1654	break;
1655
1656	case 3:
1657	prepare_cede (aTHX_ &ta);
1658	break;
1659
1660	case 4:
1661	if (!prepare_cede_notself (aTHX_ &ta))
1662	XSRETURN_EMPTY;
1663
1664	break;
1665	}	1985	}
1666	SPAGAIN;
1667		1986
1668	BARRIER;	1987	assert (("PRIO_NORMAL must be 0", !PRIO_NORMAL));
1669	PUTBACK;
1670	TRANSFER (ta, 0);
1671	SPAGAIN; /* might be the sp of a different coroutine now */
1672	/* be extra careful not to ever do anything after TRANSFER */
1673	}	1988	}
		1989
		1990	SV *
		1991	new (char *klass, ...)
		1992	CODE:
		1993	{
		1994	struct coro *coro;
		1995	MAGIC *mg;
		1996	HV *hv;
		1997	int i;
		1998
		1999	Newz (0, coro, 1, struct coro);
		2000	coro->args = newAV ();
		2001	coro->flags = CF_NEW;
		2002
		2003	if (coro_first) coro_first->prev = coro;
		2004	coro->next = coro_first;
		2005	coro_first = coro;
		2006
		2007	coro->hv = hv = newHV ();
		2008	mg = sv_magicext ((SV *)hv, 0, CORO_MAGIC_type_state, &coro_state_vtbl, (char *)coro, 0);
		2009	mg->mg_flags |= MGf_DUP;
		2010	RETVAL = sv_bless (newRV_noinc ((SV *)hv), gv_stashpv (klass, 1));
		2011
		2012	av_extend (coro->args, items - 1);
		2013	for (i = 1; i < items; i++)
		2014	av_push (coro->args, newSVsv (ST (i)));
		2015	}
		2016	OUTPUT:
		2017	RETVAL
1674		2018
1675	bool	2019	bool
1676	_destroy (SV *coro_sv)	2020	_destroy (SV *coro_sv)
1677	CODE:	2021	CODE:
1678	RETVAL = coro_state_destroy (aTHX_ SvSTATE (coro_sv));	2022	RETVAL = coro_state_destroy (aTHX_ SvSTATE (coro_sv));
1679	OUTPUT:	2023	OUTPUT:
1680	RETVAL	2024	RETVAL
1681		2025
1682	void	2026	void
1683	_exit (code)	2027	_exit (int code)
1684	int code
1685	PROTOTYPE: $	2028	PROTOTYPE: $
1686	CODE:	2029	CODE:
1687	_exit (code);	2030	_exit (code);
1688		2031
1689	int	2032	int
1690	cctx_stacksize (int new_stacksize = 0)	2033	cctx_stacksize (int new_stacksize = 0)
1691	CODE:	2034	CODE:
1692	RETVAL = coro_stacksize;	2035	RETVAL = cctx_stacksize;
1693	if (new_stacksize)	2036	if (new_stacksize)
		2037	{
1694	coro_stacksize = new_stacksize;	2038	cctx_stacksize = new_stacksize;
		2039	++cctx_gen;
		2040	}
		2041	OUTPUT:
		2042	RETVAL
		2043
		2044	int
		2045	cctx_max_idle (int max_idle = 0)
		2046	CODE:
		2047	RETVAL = cctx_max_idle;
		2048	if (max_idle > 1)
		2049	cctx_max_idle = max_idle;
1695	OUTPUT:	2050	OUTPUT:
1696	RETVAL	2051	RETVAL
1697		2052
1698	int	2053	int
1699	cctx_count ()	2054	cctx_count ()
…		…
1723	call (Coro::State coro, SV *coderef)	2078	call (Coro::State coro, SV *coderef)
1724	ALIAS:	2079	ALIAS:
1725	eval = 1	2080	eval = 1
1726	CODE:	2081	CODE:
1727	{	2082	{
1728	if (coro->mainstack)	2083	if (coro->mainstack && ((coro->flags & CF_RUNNING) || coro->slot))
1729	{	2084	{
1730	struct coro temp;	2085	struct coro temp;
1731		2086
1732	if (!(coro->flags & CF_RUNNING))	2087	if (!(coro->flags & CF_RUNNING))
1733	{	2088	{
…		…
1777	RETVAL = boolSV (coro->flags & ix);	2132	RETVAL = boolSV (coro->flags & ix);
1778	OUTPUT:	2133	OUTPUT:
1779	RETVAL	2134	RETVAL
1780		2135
1781	void	2136	void
		2137	throw (Coro::State self, SV *throw = &PL_sv_undef)
		2138	PROTOTYPE: $;$
		2139	CODE:
		2140	SvREFCNT_dec (self->throw);
		2141	self->throw = SvOK (throw) ? newSVsv (throw) : 0;
		2142
		2143	void
1782	api_trace (SV *coro, int flags = CC_TRACE | CC_TRACE_SUB)	2144	api_trace (SV *coro, int flags = CC_TRACE | CC_TRACE_SUB)
1783		2145
1784	SV *	2146	SV *
1785	has_stack (Coro::State coro)	2147	has_cctx (Coro::State coro)
1786	PROTOTYPE: $	2148	PROTOTYPE: $
1787	CODE:	2149	CODE:
1788	RETVAL = boolSV (!!coro->cctx);	2150	RETVAL = boolSV (!!coro->cctx);
1789	OUTPUT:	2151	OUTPUT:
1790	RETVAL	2152	RETVAL
…		…
1795	CODE:	2157	CODE:
1796	RETVAL = (coro->cctx ? coro->cctx->flags : 0) & CC_TRACE_ALL;	2158	RETVAL = (coro->cctx ? coro->cctx->flags : 0) & CC_TRACE_ALL;
1797	OUTPUT:	2159	OUTPUT:
1798	RETVAL	2160	RETVAL
1799		2161
1800	IV	2162	UV
1801	rss (Coro::State coro)	2163	rss (Coro::State coro)
1802	PROTOTYPE: $	2164	PROTOTYPE: $
1803	ALIAS:	2165	ALIAS:
1804	usecount = 1	2166	usecount = 1
1805	CODE:	2167	CODE:
…		…
1815	force_cctx ()	2177	force_cctx ()
1816	CODE:	2178	CODE:
1817	struct coro *coro = SvSTATE (coro_current);	2179	struct coro *coro = SvSTATE (coro_current);
1818	coro->cctx->idle_sp = 0;	2180	coro->cctx->idle_sp = 0;
1819		2181
1820	MODULE = Coro::State PACKAGE = Coro
1821
1822	BOOT:
1823	{
1824	int i;
1825
1826	sv_pool_rss = coro_get_sv (aTHX_ "Coro::POOL_RSS" , TRUE);
1827	sv_pool_size = coro_get_sv (aTHX_ "Coro::POOL_SIZE" , TRUE);
1828	av_async_pool = coro_get_av (aTHX_ "Coro::async_pool", TRUE);
1829
1830	coro_current = coro_get_sv (aTHX_ "Coro::current", FALSE);
1831	SvREADONLY_on (coro_current);
1832
1833	coro_stash = gv_stashpv ("Coro", TRUE);
1834
1835	newCONSTSUB (coro_stash, "PRIO_MAX", newSViv (PRIO_MAX));
1836	newCONSTSUB (coro_stash, "PRIO_HIGH", newSViv (PRIO_HIGH));
1837	newCONSTSUB (coro_stash, "PRIO_NORMAL", newSViv (PRIO_NORMAL));
1838	newCONSTSUB (coro_stash, "PRIO_LOW", newSViv (PRIO_LOW));
1839	newCONSTSUB (coro_stash, "PRIO_IDLE", newSViv (PRIO_IDLE));
1840	newCONSTSUB (coro_stash, "PRIO_MIN", newSViv (PRIO_MIN));
1841
1842	for (i = PRIO_MAX - PRIO_MIN + 1; i--; )
1843	coro_ready[i] = newAV ();
1844
1845	{
1846	SV *sv = perl_get_sv ("Coro::API", TRUE);
1847	perl_get_sv ("Coro::API", TRUE); /* silence 5.10 warning */
1848
1849	coroapi.schedule = api_schedule;
1850	coroapi.cede = api_cede;
1851	coroapi.cede_notself = api_cede_notself;
1852	coroapi.ready = api_ready;
1853	coroapi.is_ready = api_is_ready;
1854	coroapi.nready = &coro_nready;
1855	coroapi.current = coro_current;
1856
1857	GCoroAPI = &coroapi;
1858	sv_setiv (sv, (IV)&coroapi);
1859	SvREADONLY_on (sv);
1860	}
1861	}
1862
1863	void
1864	_set_current (SV *current)
1865	PROTOTYPE: $
1866	CODE:
1867	SvREFCNT_dec (SvRV (coro_current));
1868	SvRV_set (coro_current, SvREFCNT_inc (SvRV (current)));
1869
1870	int
1871	prio (Coro::State coro, int newprio = 0)
1872	ALIAS:
1873	nice = 1
1874	CODE:
1875	{
1876	RETVAL = coro->prio;
1877
1878	if (items > 1)
1879	{
1880	if (ix)
1881	newprio = coro->prio - newprio;
1882
1883	if (newprio < PRIO_MIN) newprio = PRIO_MIN;
1884	if (newprio > PRIO_MAX) newprio = PRIO_MAX;
1885
1886	coro->prio = newprio;
1887	}
1888	}
1889	OUTPUT:
1890	RETVAL
1891
1892	SV *
1893	ready (SV *self)
1894	PROTOTYPE: $
1895	CODE:
1896	RETVAL = boolSV (api_ready (self));
1897	OUTPUT:
1898	RETVAL
1899
1900	int
1901	nready (...)
1902	PROTOTYPE:
1903	CODE:
1904	RETVAL = coro_nready;
1905	OUTPUT:
1906	RETVAL
1907
1908	void
1909	throw (Coro::State self, SV *throw = &PL_sv_undef)
1910	PROTOTYPE: $;$
1911	CODE:
1912	SvREFCNT_dec (self->throw);
1913	self->throw = SvOK (throw) ? newSVsv (throw) : 0;
1914
1915	void	2182	void
1916	swap_defsv (Coro::State self)	2183	swap_defsv (Coro::State self)
1917	PROTOTYPE: $	2184	PROTOTYPE: $
1918	ALIAS:	2185	ALIAS:
1919	swap_defav = 1	2186	swap_defav = 1
…		…
1926	SV **dst = ix ? (SV **)&self->slot->defav : (SV **)&self->slot->defsv;	2193	SV **dst = ix ? (SV **)&self->slot->defav : (SV **)&self->slot->defsv;
1927		2194
1928	SV *tmp = *src; *src = *dst; *dst = tmp;	2195	SV *tmp = *src; *src = *dst; *dst = tmp;
1929	}	2196	}
1930		2197
		2198	MODULE = Coro::State PACKAGE = Coro
		2199
		2200	BOOT:
		2201	{
		2202	int i;
		2203
		2204	av_async_pool = coro_get_av (aTHX_ "Coro::async_pool", TRUE);
		2205	sv_pool_rss = coro_get_sv (aTHX_ "Coro::POOL_RSS" , TRUE);
		2206	sv_pool_size = coro_get_sv (aTHX_ "Coro::POOL_SIZE" , TRUE);
		2207
		2208	coro_current = coro_get_sv (aTHX_ "Coro::current", FALSE);
		2209	SvREADONLY_on (coro_current);
		2210
		2211	coro_stash = gv_stashpv ("Coro", TRUE);
		2212
		2213	newCONSTSUB (coro_stash, "PRIO_MAX", newSViv (PRIO_MAX));
		2214	newCONSTSUB (coro_stash, "PRIO_HIGH", newSViv (PRIO_HIGH));
		2215	newCONSTSUB (coro_stash, "PRIO_NORMAL", newSViv (PRIO_NORMAL));
		2216	newCONSTSUB (coro_stash, "PRIO_LOW", newSViv (PRIO_LOW));
		2217	newCONSTSUB (coro_stash, "PRIO_IDLE", newSViv (PRIO_IDLE));
		2218	newCONSTSUB (coro_stash, "PRIO_MIN", newSViv (PRIO_MIN));
		2219
		2220	for (i = PRIO_MAX - PRIO_MIN + 1; i--; )
		2221	coro_ready[i] = newAV ();
		2222
		2223	{
		2224	SV *sv = coro_get_sv (aTHX_ "Coro::API", TRUE);
		2225
		2226	coroapi.schedule = api_schedule;
		2227	coroapi.cede = api_cede;
		2228	coroapi.cede_notself = api_cede_notself;
		2229	coroapi.ready = api_ready;
		2230	coroapi.is_ready = api_is_ready;
		2231	coroapi.nready = &coro_nready;
		2232	coroapi.current = coro_current;
		2233
		2234	GCoroAPI = &coroapi;
		2235	sv_setiv (sv, (IV)&coroapi);
		2236	SvREADONLY_on (sv);
		2237	}
		2238	}
		2239
		2240	void
		2241	_set_current (SV *current)
		2242	PROTOTYPE: $
		2243	CODE:
		2244	SvREFCNT_dec (SvRV (coro_current));
		2245	SvRV_set (coro_current, SvREFCNT_inc_NN (SvRV (current)));
		2246
		2247	void
		2248	_set_readyhook (SV *hook)
		2249	PROTOTYPE: $
		2250	CODE:
		2251	LOCK;
		2252	SvREFCNT_dec (coro_readyhook);
		2253	coro_readyhook = SvOK (hook) ? newSVsv (hook) : 0;
		2254	UNLOCK;
		2255
		2256	int
		2257	prio (Coro::State coro, int newprio = 0)
		2258	ALIAS:
		2259	nice = 1
		2260	CODE:
		2261	{
		2262	RETVAL = coro->prio;
		2263
		2264	if (items > 1)
		2265	{
		2266	if (ix)
		2267	newprio = coro->prio - newprio;
		2268
		2269	if (newprio < PRIO_MIN) newprio = PRIO_MIN;
		2270	if (newprio > PRIO_MAX) newprio = PRIO_MAX;
		2271
		2272	coro->prio = newprio;
		2273	}
		2274	}
		2275	OUTPUT:
		2276	RETVAL
		2277
		2278	SV *
		2279	ready (SV *self)
		2280	PROTOTYPE: $
		2281	CODE:
		2282	RETVAL = boolSV (api_ready (self));
		2283	OUTPUT:
		2284	RETVAL
		2285
		2286	int
		2287	nready (...)
		2288	PROTOTYPE:
		2289	CODE:
		2290	RETVAL = coro_nready;
		2291	OUTPUT:
		2292	RETVAL
		2293
1931	# for async_pool speedup	2294	# for async_pool speedup
1932	void	2295	void
1933	_pool_1 (SV *cb)	2296	_pool_1 (SV *cb)
1934	CODE:	2297	CODE:
1935	{	2298	{
…		…
1940	AV *invoke_av;	2303	AV *invoke_av;
1941	int i, len;	2304	int i, len;
1942		2305
1943	if (!invoke)	2306	if (!invoke)
1944	{	2307	{
1945	SvREFCNT_dec (PL_diehook); PL_diehook = 0;	2308	SV *old = PL_diehook;
		2309	PL_diehook = 0;
		2310	SvREFCNT_dec (old);
1946	croak ("\3async_pool terminate\2\n");	2311	croak ("\3async_pool terminate\2\n");
1947	}	2312	}
1948		2313
1949	SvREFCNT_dec (coro->saved_deffh);	2314	SvREFCNT_dec (coro->saved_deffh);
1950	coro->saved_deffh = SvREFCNT_inc ((SV *)PL_defoutgv);	2315	coro->saved_deffh = SvREFCNT_inc_NN ((SV *)PL_defoutgv);
1951		2316
1952	hv_store (hv, "desc", sizeof ("desc") - 1,	2317	hv_store (hv, "desc", sizeof ("desc") - 1,
1953	newSVpvn ("[async_pool]", sizeof ("[async_pool]") - 1), 0);	2318	newSVpvn ("[async_pool]", sizeof ("[async_pool]") - 1), 0);
1954		2319
1955	invoke_av = (AV *)SvRV (invoke);	2320	invoke_av = (AV *)SvRV (invoke);
…		…
1959		2324
1960	if (len > 0)	2325	if (len > 0)
1961	{	2326	{
1962	av_fill (defav, len - 1);	2327	av_fill (defav, len - 1);
1963	for (i = 0; i < len; ++i)	2328	for (i = 0; i < len; ++i)
1964	av_store (defav, i, SvREFCNT_inc (AvARRAY (invoke_av)[i + 1]));	2329	av_store (defav, i, SvREFCNT_inc_NN (AvARRAY (invoke_av)[i + 1]));
1965	}	2330	}
1966		2331
1967	SvREFCNT_dec (invoke);	2332	SvREFCNT_dec (invoke);
1968	}	2333	}
1969		2334
…		…
1976	sv_setsv (cb, &PL_sv_undef);	2341	sv_setsv (cb, &PL_sv_undef);
1977		2342
1978	SvREFCNT_dec ((SV *)PL_defoutgv); PL_defoutgv = (GV *)coro->saved_deffh;	2343	SvREFCNT_dec ((SV *)PL_defoutgv); PL_defoutgv = (GV *)coro->saved_deffh;
1979	coro->saved_deffh = 0;	2344	coro->saved_deffh = 0;
1980		2345
1981	if (coro_rss (aTHX_ coro) > SvIV (sv_pool_rss)	2346	if (coro_rss (aTHX_ coro) > SvUV (sv_pool_rss)
1982	|| av_len (av_async_pool) + 1 >= SvIV (sv_pool_size))	2347	|| av_len (av_async_pool) + 1 >= SvIV (sv_pool_size))
1983	{	2348	{
1984	SvREFCNT_dec (PL_diehook); PL_diehook = 0;	2349	SV *old = PL_diehook;
		2350	PL_diehook = 0;
		2351	SvREFCNT_dec (old);
1985	croak ("\3async_pool terminate\2\n");	2352	croak ("\3async_pool terminate\2\n");
1986	}	2353	}
1987		2354
1988	av_clear (GvAV (PL_defgv));	2355	av_clear (GvAV (PL_defgv));
1989	hv_store ((HV *)SvRV (coro_current), "desc", sizeof ("desc") - 1,	2356	hv_store ((HV *)SvRV (coro_current), "desc", sizeof ("desc") - 1,
…		…
1995	api_trace (coro_current, 0);	2362	api_trace (coro_current, 0);
1996		2363
1997	av_push (av_async_pool, newSVsv (coro_current));	2364	av_push (av_async_pool, newSVsv (coro_current));
1998	}	2365	}
1999		2366
		2367	#if 0
		2368
		2369	void
		2370	_generator_call (...)
		2371	PROTOTYPE: @
		2372	PPCODE:
		2373	fprintf (stderr, "call %p\n", CvXSUBANY(cv).any_ptr);
		2374	xxxx
		2375	abort ();
		2376
		2377	SV *
		2378	gensub (SV *sub, ...)
		2379	PROTOTYPE: &;@
		2380	CODE:
		2381	{
		2382	struct coro *coro;
		2383	MAGIC *mg;
		2384	CV *xcv;
		2385	CV *ncv = (CV *)newSV_type (SVt_PVCV);
		2386	int i;
		2387
		2388	CvGV (ncv) = CvGV (cv);
		2389	CvFILE (ncv) = CvFILE (cv);
		2390
		2391	Newz (0, coro, 1, struct coro);
		2392	coro->args = newAV ();
		2393	coro->flags = CF_NEW;
		2394
		2395	av_extend (coro->args, items - 1);
		2396	for (i = 1; i < items; i++)
		2397	av_push (coro->args, newSVsv (ST (i)));
		2398
		2399	CvISXSUB_on (ncv);
		2400	CvXSUBANY (ncv).any_ptr = (void *)coro;
		2401
		2402	xcv = GvCV (gv_fetchpv ("Coro::_generator_call", 0, SVt_PVCV));
		2403
		2404	CvXSUB (ncv) = CvXSUB (xcv);
		2405	CvANON_on (ncv);
		2406
		2407	mg = sv_magicext ((SV *)ncv, 0, CORO_MAGIC_type_state, &coro_gensub_vtbl, (char *)coro, 0);
		2408	RETVAL = newRV_noinc ((SV *)ncv);
		2409	}
		2410	OUTPUT:
		2411	RETVAL
		2412
		2413	#endif
		2414
2000		2415
2001	MODULE = Coro::State PACKAGE = Coro::AIO	2416	MODULE = Coro::State PACKAGE = Coro::AIO
2002		2417
2003	SV *	2418	void
2004	_get_state ()	2419	_get_state (SV *self)
2005	CODE:	2420	PPCODE:
2006	{	2421	{
2007	struct io_state *data;	2422	AV *defav = GvAV (PL_defgv);
2008		2423	AV *av = newAV ();
		2424	int i;
2009	RETVAL = newSV (sizeof (struct io_state));	2425	SV *data_sv = newSV (sizeof (struct io_state));
2010	data = (struct io_state *)SvPVX (RETVAL);	2426	struct io_state *data = (struct io_state *)SvPVX (data_sv);
2011	SvCUR_set (RETVAL, sizeof (struct io_state));	2427	SvCUR_set (data_sv, sizeof (struct io_state));
2012	SvPOK_only (RETVAL);	2428	SvPOK_only (data_sv);
2013		2429
2014	data->errorno = errno;	2430	data->errorno = errno;
2015	data->laststype = PL_laststype;	2431	data->laststype = PL_laststype;
2016	data->laststatval = PL_laststatval;	2432	data->laststatval = PL_laststatval;
2017	data->statcache = PL_statcache;	2433	data->statcache = PL_statcache;
		2434
		2435	av_extend (av, AvFILLp (defav) + 1 + 1);
		2436
		2437	for (i = 0; i <= AvFILLp (defav); ++i)
		2438	av_push (av, SvREFCNT_inc_NN (AvARRAY (defav)[i]));
		2439
		2440	av_push (av, data_sv);
		2441
		2442	XPUSHs (sv_2mortal (newRV_noinc ((SV *)av)));
		2443
		2444	api_ready (self);
2018	}	2445	}
2019	OUTPUT:
2020	RETVAL
2021		2446
2022	void	2447	void
2023	_set_state (char *data_)	2448	_set_state (SV *state)
2024	PROTOTYPE: $	2449	PROTOTYPE: $
2025	CODE:	2450	PPCODE:
2026	{	2451	{
2027	struct io_state *data = (void *)data_;	2452	AV *av = (AV *)SvRV (state);
		2453	struct io_state *data = (struct io_state *)SvPVX (AvARRAY (av)[AvFILLp (av)]);
		2454	int i;
2028		2455
2029	errno = data->errorno;	2456	errno = data->errorno;
2030	PL_laststype = data->laststype;	2457	PL_laststype = data->laststype;
2031	PL_laststatval = data->laststatval;	2458	PL_laststatval = data->laststatval;
2032	PL_statcache = data->statcache;	2459	PL_statcache = data->statcache;
2033	}
2034		2460
		2461	EXTEND (SP, AvFILLp (av));
		2462	for (i = 0; i < AvFILLp (av); ++i)
		2463	PUSHs (sv_2mortal (SvREFCNT_inc_NN (AvARRAY (av)[i])));
		2464	}
		2465
		2466
		2467	MODULE = Coro::State PACKAGE = Coro::AnyEvent
		2468
		2469	BOOT:
		2470	sv_activity = coro_get_sv (aTHX_ "Coro::AnyEvent::ACTIVITY", TRUE);
		2471
		2472	SV *
		2473	_schedule (...)
		2474	PROTOTYPE: @
		2475	CODE:
		2476	{
		2477	static int incede;
		2478
		2479	api_cede_notself ();
		2480
		2481	++incede;
		2482	while (coro_nready >= incede && api_cede ())
		2483	;
		2484
		2485	sv_setsv (sv_activity, &PL_sv_undef);
		2486	if (coro_nready >= incede)
		2487	{
		2488	PUSHMARK (SP);
		2489	PUTBACK;
		2490	call_pv ("Coro::AnyEvent::_activity", G_DISCARD | G_EVAL);
		2491	SPAGAIN;
		2492	}
		2493
		2494	--incede;
		2495	}
		2496
		2497
		2498	MODULE = Coro::State PACKAGE = PerlIO::cede
		2499
		2500	BOOT:
		2501	PerlIO_define_layer (aTHX_ &PerlIO_cede);
		2502

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