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/cvs/Coro/Coro/State.xs

Comparing Coro/Coro/State.xs (file contents):
Revision 1.221 by root, Sun Jan 13 09:47:22 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
		93	/* 5.8.8 */
		94	#ifndef GV_NOTQUAL
		95	# define GV_NOTQUAL 0
		96	#endif
		97	#ifndef newSV
		98	# define newSV(l) NEWSV(0,l)
		99	#endif
		100
77	/* 5.8.7 */	101	/* 5.8.7 */
78	#ifndef SvRV_set	102	#ifndef SvRV_set
79	# define SvRV_set(s,v) SvRV(s) = (v)	103	# define SvRV_set(s,v) SvRV(s) = (v)
80	#endif
81
82	/* 5.8.8 */
83	#ifndef GV_NOTQUAL
84	# define GV_NOTQUAL 0
85	#endif
86	#ifndef newSV
87	# define newSV(l) NEWSV(0,l)
88	#endif	104	#endif
89		105
90	#if !__i386 && !__x86_64 && !__powerpc && !__m68k && !__alpha && !__mips && !__sparc64	106	#if !__i386 && !__x86_64 && !__powerpc && !__m68k && !__alpha && !__mips && !__sparc64
91	# undef CORO_STACKGUARD	107	# undef CORO_STACKGUARD
92	#endif	108	#endif
…		…
107		123
108	#define IN_DESTRUCT (PL_main_cv == Nullcv)	124	#define IN_DESTRUCT (PL_main_cv == Nullcv)
109		125
110	#if __GNUC__ >= 3	126	#if __GNUC__ >= 3
111	# define attribute(x) __attribute__(x)	127	# define attribute(x) __attribute__(x)
112	# define BARRIER __asm__ __volatile__ ("" : : : "memory")
113	# define expect(expr,value) __builtin_expect ((expr),(value))	128	# define expect(expr,value) __builtin_expect ((expr),(value))
		129	# define INLINE static inline
114	#else	130	#else
115	# define attribute(x)	131	# define attribute(x)
116	# define BARRIER
117	# define expect(expr,value) (expr)	132	# define expect(expr,value) (expr)
		133	# define INLINE static
118	#endif	134	#endif
119		135
120	#define expect_false(expr) expect ((expr) != 0, 0)	136	#define expect_false(expr) expect ((expr) != 0, 0)
121	#define expect_true(expr) expect ((expr) != 0, 1)	137	#define expect_true(expr) expect ((expr) != 0, 1)
122		138
123	#define NOINLINE attribute ((noinline))	139	#define NOINLINE attribute ((noinline))
124		140
125	#include "CoroAPI.h"	141	#include "CoroAPI.h"
126		142
127	#ifdef USE_ITHREADS	143	#ifdef USE_ITHREADS
		144
128	static perl_mutex coro_mutex;	145	static perl_mutex coro_lock;
129	# define LOCK do { MUTEX_LOCK (&coro_mutex); } while (0)	146	# define LOCK do { MUTEX_LOCK (&coro_lock); } while (0)
130	# 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
131	#else	152	#else
		153
132	# define LOCK (void)0	154	# define LOCK (void)0
133	# define UNLOCK (void)0	155	# define UNLOCK (void)0
		156
134	#endif	157	#endif
		158
		159	# undef LOCK
		160	# define LOCK (void)0
		161	# undef UNLOCK
		162	# define UNLOCK (void)0
135		163
136	/* helper storage struct for Coro::AIO */	164	/* helper storage struct for Coro::AIO */
137	struct io_state	165	struct io_state
138	{	166	{
		167	AV *res;
139	int errorno;	168	int errorno;
140	I32 laststype;	169	I32 laststype; /* U16 in 5.10.0 */
141	int laststatval;	170	int laststatval;
142	Stat_t statcache;	171	Stat_t statcache;
143	};	172	};
144		173
		174	static double (*nvtime)(); /* so why doesn't it take void? */
		175
		176	static U32 cctx_gen;
145	static size_t coro_stacksize = CORO_STACKSIZE;	177	static size_t cctx_stacksize = CORO_STACKSIZE;
146	static struct CoroAPI coroapi;	178	static struct CoroAPI coroapi;
147	static AV *main_mainstack; /* used to differentiate between $main and others */	179	static AV *main_mainstack; /* used to differentiate between $main and others */
148	static JMPENV *main_top_env;	180	static JMPENV *main_top_env;
149	static HV *coro_state_stash, *coro_stash;	181	static HV *coro_state_stash, *coro_stash;
150	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	};
151		189
152	static GV *irsgv; /* $/ */	190	static GV *irsgv; /* $/ */
153	static GV *stdoutgv; /* *STDOUT */	191	static GV *stdoutgv; /* *STDOUT */
154	static SV *rv_diehook;	192	static SV *rv_diehook;
155	static SV *rv_warnhook;	193	static SV *rv_warnhook;
…		…
157		195
158	/* async_pool helper stuff */	196	/* async_pool helper stuff */
159	static SV *sv_pool_rss;	197	static SV *sv_pool_rss;
160	static SV *sv_pool_size;	198	static SV *sv_pool_size;
161	static AV *av_async_pool;	199	static AV *av_async_pool;
		200
		201	/* Coro::AnyEvent */
		202	static SV *sv_activity;
162		203
163	static struct coro_cctx *cctx_first;	204	static struct coro_cctx *cctx_first;
164	static int cctx_count, cctx_idle;	205	static int cctx_count, cctx_idle;
165		206
166	enum {	207	enum {
…		…
184	void *idle_sp; /* sp of top-level transfer/schedule/cede call */	225	void *idle_sp; /* sp of top-level transfer/schedule/cede call */
185	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 */
186	JMPENV *top_env;	227	JMPENV *top_env;
187	coro_context cctx;	228	coro_context cctx;
188		229
		230	U32 gen;
189	#if CORO_USE_VALGRIND	231	#if CORO_USE_VALGRIND
190	int valgrind_id;	232	int valgrind_id;
191	#endif	233	#endif
192	unsigned char flags;	234	unsigned char flags;
193	} coro_cctx;	235	} coro_cctx;
…		…
252	#define PRIO_IDLE -3	294	#define PRIO_IDLE -3
253	#define PRIO_MIN -4	295	#define PRIO_MIN -4
254		296
255	/* for Coro.pm */	297	/* for Coro.pm */
256	static SV *coro_current;	298	static SV *coro_current;
		299	static SV *coro_readyhook;
257	static AV *coro_ready [PRIO_MAX-PRIO_MIN+1];	300	static AV *coro_ready [PRIO_MAX - PRIO_MIN + 1];
258	static int coro_nready;	301	static int coro_nready;
259	static struct coro *coro_first;	302	static struct coro *coro_first;
260		303
261	/** lowlevel stuff **********************************************************/	304	/** lowlevel stuff **********************************************************/
262		305
263	static SV *	306	static SV *
264	coro_get_sv (pTHX_ const char *name, int create)	307	coro_get_sv (pTHX_ const char *name, int create)
265	{	308	{
266	#if PERL_VERSION_ATLEAST (5,9,0)	309	#if PERL_VERSION_ATLEAST (5,10,0)
267	/* 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 */
268	get_sv (name, create);	311	get_sv (name, create);
269	#endif	312	#endif
270	return get_sv (name, create);	313	return get_sv (name, create);
271	}	314	}
272		315
273	static AV *	316	static AV *
274	coro_get_av (pTHX_ const char *name, int create)	317	coro_get_av (pTHX_ const char *name, int create)
275	{	318	{
276	#if PERL_VERSION_ATLEAST (5,9,0)	319	#if PERL_VERSION_ATLEAST (5,10,0)
277	/* 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 */
278	get_av (name, create);	321	get_av (name, create);
279	#endif	322	#endif
280	return get_av (name, create);	323	return get_av (name, create);
281	}	324	}
282		325
283	static HV *	326	static HV *
284	coro_get_hv (pTHX_ const char *name, int create)	327	coro_get_hv (pTHX_ const char *name, int create)
285	{	328	{
286	#if PERL_VERSION_ATLEAST (5,9,0)	329	#if PERL_VERSION_ATLEAST (5,10,0)
287	/* 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 */
288	get_hv (name, create);	331	get_hv (name, create);
289	#endif	332	#endif
290	return get_hv (name, create);	333	return get_hv (name, create);
291	}	334	}
…		…
296	AV *padlist = CvPADLIST (cv);	339	AV *padlist = CvPADLIST (cv);
297	AV *newpadlist, *newpad;	340	AV *newpadlist, *newpad;
298		341
299	newpadlist = newAV ();	342	newpadlist = newAV ();
300	AvREAL_off (newpadlist);	343	AvREAL_off (newpadlist);
301	#if PERL_VERSION_ATLEAST (5,9,0)	344	#if PERL_VERSION_ATLEAST (5,10,0)
302	Perl_pad_push (aTHX_ padlist, AvFILLp (padlist) + 1);	345	Perl_pad_push (aTHX_ padlist, AvFILLp (padlist) + 1);
303	#else	346	#else
304	Perl_pad_push (aTHX_ padlist, AvFILLp (padlist) + 1, 1);	347	Perl_pad_push (aTHX_ padlist, AvFILLp (padlist) + 1, 1);
305	#endif	348	#endif
306	newpad = (AV *)AvARRAY (padlist)[AvFILLp (padlist)];	349	newpad = (AV *)AvARRAY (padlist)[AvFILLp (padlist)];
307	--AvFILLp (padlist);	350	--AvFILLp (padlist);
308		351
309	av_store (newpadlist, 0, SvREFCNT_inc (*av_fetch (padlist, 0, FALSE)));	352	av_store (newpadlist, 0, SvREFCNT_inc_NN (*av_fetch (padlist, 0, FALSE)));
310	av_store (newpadlist, 1, (SV *)newpad);	353	av_store (newpadlist, 1, (SV *)newpad);
311		354
312	return newpadlist;	355	return newpadlist;
313	}	356	}
314		357
…		…
344		387
345	/* casting is fun. */	388	/* casting is fun. */
346	while (&PL_sv_undef != (SV *)(padlist = (AV *)av_pop (av)))	389	while (&PL_sv_undef != (SV *)(padlist = (AV *)av_pop (av)))
347	free_padlist (aTHX_ padlist);	390	free_padlist (aTHX_ padlist);
348		391
		392	SvREFCNT_dec (av); /* sv_magicext increased the refcount */
		393
349	return 0;	394	return 0;
350	}	395	}
351		396
352	#define CORO_MAGIC_type_cv PERL_MAGIC_ext	397	#define CORO_MAGIC_type_cv PERL_MAGIC_ext
353	#define CORO_MAGIC_type_state PERL_MAGIC_ext	398	#define CORO_MAGIC_type_state PERL_MAGIC_ext
…		…
355	static MGVTBL coro_cv_vtbl = {	400	static MGVTBL coro_cv_vtbl = {
356	0, 0, 0, 0,	401	0, 0, 0, 0,
357	coro_cv_free	402	coro_cv_free
358	};	403	};
359		404
360	#define CORO_MAGIC(sv,type) \	405	#define CORO_MAGIC(sv, type) \
361	SvMAGIC (sv) \	406	SvMAGIC (sv) \
362	? SvMAGIC (sv)->mg_type == type \	407	? SvMAGIC (sv)->mg_type == type \
363	? SvMAGIC (sv) \	408	? SvMAGIC (sv) \
364	: mg_find (sv, type) \	409	: mg_find (sv, type) \
365	: 0	410	: 0
366		411
367	#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)
368	#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)
369		414
370	static struct coro *	415	INLINE struct coro *
371	SvSTATE_ (pTHX_ SV *coro)	416	SvSTATE_ (pTHX_ SV *coro)
372	{	417	{
373	HV *stash;	418	HV *stash;
374	MAGIC *mg;	419	MAGIC *mg;
375		420
…		…
403	if (expect_true (mg && AvFILLp ((av = (AV *)mg->mg_obj)) >= 0))	448	if (expect_true (mg && AvFILLp ((av = (AV *)mg->mg_obj)) >= 0))
404	CvPADLIST (cv) = (AV *)AvARRAY (av)[AvFILLp (av)--];	449	CvPADLIST (cv) = (AV *)AvARRAY (av)[AvFILLp (av)--];
405	else	450	else
406	{	451	{
407	#if CORO_PREFER_PERL_FUNCTIONS	452	#if CORO_PREFER_PERL_FUNCTIONS
408	/* this is probably cleaner, but also slower? */	453	/* this is probably cleaner? but also slower! */
		454	/* in practise, it seems to be less stable */
409	CV *cp = Perl_cv_clone (cv);	455	CV *cp = Perl_cv_clone (cv);
410	CvPADLIST (cv) = CvPADLIST (cp);	456	CvPADLIST (cv) = CvPADLIST (cp);
411	CvPADLIST (cp) = 0;	457	CvPADLIST (cp) = 0;
412	SvREFCNT_dec (cp);	458	SvREFCNT_dec (cp);
413	#else	459	#else
…		…
497		543
498	if (expect_true (CvDEPTH (cv)))	544	if (expect_true (CvDEPTH (cv)))
499	{	545	{
500	EXTEND (SP, 3);	546	EXTEND (SP, 3);
501	PUSHs ((SV *)CvPADLIST (cv));	547	PUSHs ((SV *)CvPADLIST (cv));
502	PUSHs (INT2PTR (SV *, CvDEPTH (cv)));	548	PUSHs (INT2PTR (SV *, (IV)CvDEPTH (cv)));
503	PUSHs ((SV *)cv);	549	PUSHs ((SV *)cv);
504		550
505	CvDEPTH (cv) = 0;	551	CvDEPTH (cv) = 0;
506	get_padlist (aTHX_ cv);	552	get_padlist (aTHX_ cv);
507	}	553	}
…		…
587		633
588	New(54,PL_savestack,24,ANY);	634	New(54,PL_savestack,24,ANY);
589	PL_savestack_ix = 0;	635	PL_savestack_ix = 0;
590	PL_savestack_max = 24;	636	PL_savestack_max = 24;
591		637
592	#if !PERL_VERSION_ATLEAST (5,9,0)	638	#if !PERL_VERSION_ATLEAST (5,10,0)
593	New(54,PL_retstack,4,OP*);	639	New(54,PL_retstack,4,OP*);
594	PL_retstack_ix = 0;	640	PL_retstack_ix = 0;
595	PL_retstack_max = 4;	641	PL_retstack_max = 4;
596	#endif	642	#endif
597	}	643	}
…		…
599		645
600	/*	646	/*
601	* destroy the stacks, the callchain etc...	647	* destroy the stacks, the callchain etc...
602	*/	648	*/
603	static void	649	static void
604	coro_destroy_stacks (pTHX)	650	coro_destruct_stacks (pTHX)
605	{	651	{
606	while (PL_curstackinfo->si_next)	652	while (PL_curstackinfo->si_next)
607	PL_curstackinfo = PL_curstackinfo->si_next;	653	PL_curstackinfo = PL_curstackinfo->si_next;
608		654
609	while (PL_curstackinfo)	655	while (PL_curstackinfo)
…		…
620		666
621	Safefree (PL_tmps_stack);	667	Safefree (PL_tmps_stack);
622	Safefree (PL_markstack);	668	Safefree (PL_markstack);
623	Safefree (PL_scopestack);	669	Safefree (PL_scopestack);
624	Safefree (PL_savestack);	670	Safefree (PL_savestack);
625	#if !PERL_VERSION_ATLEAST (5,9,0)	671	#if !PERL_VERSION_ATLEAST (5,10,0)
626	Safefree (PL_retstack);	672	Safefree (PL_retstack);
627	#endif	673	#endif
628	}	674	}
629		675
630	static size_t	676	static size_t
…		…
646	#undef VAR	692	#undef VAR
647	}	693	}
648	else	694	else
649	slot = coro->slot;	695	slot = coro->slot;
650		696
		697	if (slot)
		698	{
651	rss += sizeof (slot->curstackinfo);	699	rss += sizeof (slot->curstackinfo);
652	rss += (slot->curstackinfo->si_cxmax + 1) * sizeof (PERL_CONTEXT);	700	rss += (slot->curstackinfo->si_cxmax + 1) * sizeof (PERL_CONTEXT);
653	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 *);
654	rss += slot->tmps_max * sizeof (SV *);	702	rss += slot->tmps_max * sizeof (SV *);
655	rss += (slot->markstack_max - slot->markstack_ptr) * sizeof (I32);	703	rss += (slot->markstack_max - slot->markstack_ptr) * sizeof (I32);
656	rss += slot->scopestack_max * sizeof (I32);	704	rss += slot->scopestack_max * sizeof (I32);
657	rss += slot->savestack_max * sizeof (ANY);	705	rss += slot->savestack_max * sizeof (ANY);
658		706
659	#if !PERL_VERSION_ATLEAST (5,9,0)	707	#if !PERL_VERSION_ATLEAST (5,10,0)
660	rss += slot->retstack_max * sizeof (OP *);	708	rss += slot->retstack_max * sizeof (OP *);
661	#endif	709	#endif
		710	}
662	}	711	}
663		712
664	return rss;	713	return rss;
665	}	714	}
666		715
667	/** coroutine stack handling ************************************************/	716	/** coroutine stack handling ************************************************/
668		717
669	static int (*orig_sigelem_get) (pTHX_ SV *sv, MAGIC *mg);	718	static int (*orig_sigelem_get) (pTHX_ SV *sv, MAGIC *mg);
670	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
671		733
672	/*	734	/*
673	* This overrides the default magic get method of %SIG elements.	735	* This overrides the default magic get method of %SIG elements.
674	* 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
675	* 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
…		…
683	{	745	{
684	const char *s = MgPV_nolen_const (mg);	746	const char *s = MgPV_nolen_const (mg);
685		747
686	if (*s == '_')	748	if (*s == '_')
687	{	749	{
688	if (strEQ (s, "__DIE__" ) && PL_diehook ) return sv_setsv (sv, PL_diehook ), 0;	750	SV **svp = 0;
689	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	}
690	}	760	}
691		761
692	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;
693	}	787	}
694		788
695	static int	789	static int
696	coro_sigelem_set (pTHX_ SV *sv, MAGIC *mg)	790	coro_sigelem_set (pTHX_ SV *sv, MAGIC *mg)
697	{	791	{
…		…
707	if (svp)	801	if (svp)
708	{	802	{
709	SV *old = *svp;	803	SV *old = *svp;
710	*svp = newSVsv (sv);	804	*svp = newSVsv (sv);
711	SvREFCNT_dec (old);	805	SvREFCNT_dec (old);
712	return;	806	return 0;
713	}	807	}
714	}	808	}
715		809
716	return orig_sigelem_set ? orig_sigelem_set (aTHX_ sv, mg) : 0;	810	return orig_sigelem_set ? orig_sigelem_set (aTHX_ sv, mg) : 0;
717	}	811	}
…		…
731	PL_curpm = 0;	825	PL_curpm = 0;
732	PL_curpad = 0;	826	PL_curpad = 0;
733	PL_localizing = 0;	827	PL_localizing = 0;
734	PL_dirty = 0;	828	PL_dirty = 0;
735	PL_restartop = 0;	829	PL_restartop = 0;
		830	#if PERL_VERSION_ATLEAST (5,10,0)
		831	PL_parser = 0;
		832	#endif
736		833
737	/* recreate the die/warn hooks */	834	/* recreate the die/warn hooks */
738	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 );
739	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);
740		837
741	GvSV (PL_defgv) = newSV (0);	838	GvSV (PL_defgv) = newSV (0);
742	GvAV (PL_defgv) = coro->args; coro->args = 0;	839	GvAV (PL_defgv) = coro->args; coro->args = 0;
743	GvSV (PL_errgv) = newSV (0);	840	GvSV (PL_errgv) = newSV (0);
744	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);
745	PL_rs = newSVsv (GvSV (irsgv));	842	PL_rs = newSVsv (GvSV (irsgv));
746	PL_defoutgv = (GV *)SvREFCNT_inc (stdoutgv);	843	PL_defoutgv = (GV *)SvREFCNT_inc_NN (stdoutgv);
747		844
748	{	845	{
749	dSP;	846	dSP;
750	LOGOP myop;	847	UNOP myop;
751		848
752	Zero (&myop, 1, LOGOP);	849	Zero (&myop, 1, UNOP);
753	myop.op_next = Nullop;	850	myop.op_next = Nullop;
754	myop.op_flags = OPf_WANT_VOID;	851	myop.op_flags = OPf_WANT_VOID;
755		852
756	PUSHMARK (SP);	853	PUSHMARK (SP);
757	XPUSHs (sv_2mortal (av_shift (GvAV (PL_defgv))));	854	XPUSHs (sv_2mortal (av_shift (GvAV (PL_defgv))));
…		…
761	SPAGAIN;	858	SPAGAIN;
762	}	859	}
763		860
764	/* 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
765	* likely was suspended in set_stacklevel, called from entersub.	862	* likely was suspended in set_stacklevel, called from entersub.
766	* 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,
767	* so we ENTER here for symmetry	864	* so we ENTER here for symmetry.
768	*/	865	*/
769	ENTER;	866	SSL_HEAD;
770	}	867	}
771		868
772	static void	869	static void
773	coro_destroy (pTHX_ struct coro *coro)	870	coro_destruct (pTHX_ struct coro *coro)
774	{	871	{
775	if (!IN_DESTRUCT)	872	if (!IN_DESTRUCT)
776	{	873	{
777	/* restore all saved variables and stuff */	874	/* restore all saved variables and stuff */
778	LEAVE_SCOPE (0);	875	LEAVE_SCOPE (0);
…		…
800	SvREFCNT_dec (PL_warnhook);	897	SvREFCNT_dec (PL_warnhook);
801		898
802	SvREFCNT_dec (coro->saved_deffh);	899	SvREFCNT_dec (coro->saved_deffh);
803	SvREFCNT_dec (coro->throw);	900	SvREFCNT_dec (coro->throw);
804		901
805	coro_destroy_stacks (aTHX);	902	coro_destruct_stacks (aTHX);
806	}	903	}
807		904
808	static void	905	INLINE void
809	free_coro_mortal (pTHX)	906	free_coro_mortal (pTHX)
810	{	907	{
811	if (expect_true (coro_mortal))	908	if (expect_true (coro_mortal))
812	{	909	{
813	SvREFCNT_dec (coro_mortal);	910	SvREFCNT_dec (coro_mortal);
…		…
847	: cx->blk_gimme == G_SCALAR ? bot + 1	944	: cx->blk_gimme == G_SCALAR ? bot + 1
848	: bot;	945	: bot;
849		946
850	av_extend (av, top - bot);	947	av_extend (av, top - bot);
851	while (bot < top)	948	while (bot < top)
852	av_push (av, SvREFCNT_inc (*bot++));	949	av_push (av, SvREFCNT_inc_NN (*bot++));
853		950
854	PL_runops = RUNOPS_DEFAULT;	951	PL_runops = RUNOPS_DEFAULT;
855	ENTER;	952	ENTER;
856	SAVETMPS;	953	SAVETMPS;
857	EXTEND (SP, 3);	954	EXTEND (SP, 3);
…		…
895	SAVETMPS;	992	SAVETMPS;
896	EXTEND (SP, 3);	993	EXTEND (SP, 3);
897	PUSHMARK (SP);	994	PUSHMARK (SP);
898	PUSHs (&PL_sv_yes);	995	PUSHs (&PL_sv_yes);
899	PUSHs (fullname);	996	PUSHs (fullname);
900	PUSHs (cx->blk_sub.hasargs ? sv_2mortal (newRV_inc ((SV *)cx->blk_sub.argarray)) : &PL_sv_undef);	997	PUSHs (CxHASARGS (cx) ? sv_2mortal (newRV_inc ((SV *)cx->blk_sub.argarray)) : &PL_sv_undef);
901	PUTBACK;	998	PUTBACK;
902	cb = hv_fetch ((HV *)SvRV (coro_current), "_trace_sub_cb", sizeof ("_trace_sub_cb") - 1, 0);	999	cb = hv_fetch ((HV *)SvRV (coro_current), "_trace_sub_cb", sizeof ("_trace_sub_cb") - 1, 0);
903	if (cb) call_sv (*cb, G_KEEPERR | G_EVAL | G_VOID | G_DISCARD);	1000	if (cb) call_sv (*cb, G_KEEPERR | G_EVAL | G_VOID | G_DISCARD);
904	SPAGAIN;	1001	SPAGAIN;
905	FREETMPS;	1002	FREETMPS;
…		…
937		1034
938	TAINT_NOT;	1035	TAINT_NOT;
939	return 0;	1036	return 0;
940	}	1037	}
941		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
942	/* 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 */
943	/* _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 */
944	/* during execution of a perl program */	1048	/* during execution of a perl program */
		1049	/* also initialises PL_top_env */
945	static void NOINLINE	1050	static void NOINLINE
946	cctx_prepare (pTHX_ coro_cctx *cctx)	1051	cctx_prepare (pTHX_ coro_cctx *cctx)
947	{	1052	{
948	dSP;	1053	dSP;
949	LOGOP myop;	1054	UNOP myop;
950		1055
951	PL_top_env = &PL_start_env;	1056	PL_top_env = &PL_start_env;
952		1057
953	if (cctx->flags & CC_TRACE)	1058	if (cctx->flags & CC_TRACE)
954	PL_runops = runops_trace;	1059	PL_runops = runops_trace;
955		1060
956	Zero (&myop, 1, LOGOP);	1061	Zero (&myop, 1, UNOP);
957	myop.op_next = PL_op;	1062	myop.op_next = PL_op;
958	myop.op_flags = OPf_WANT_VOID | OPf_STACKED;	1063	myop.op_flags = OPf_WANT_VOID | OPf_STACKED;
959		1064
960	PUSHMARK (SP);	1065	PUSHMARK (SP);
961	EXTEND (SP, 2);	1066	EXTEND (SP, 2);
962	PUSHs (sv_2mortal (newSViv (PTR2IV (cctx))));	1067	PUSHs (sv_2mortal (newSViv ((IV)cctx)));
963	PUSHs ((SV *)get_cv ("Coro::State::_cctx_init", FALSE));	1068	PUSHs ((SV *)get_cv ("Coro::State::_cctx_init", FALSE));
964	PUTBACK;	1069	PUTBACK;
965	PL_op = (OP *)&myop;	1070	PL_op = (OP *)&myop;
966	PL_op = PL_ppaddr[OP_ENTERSUB](aTHX);	1071	PL_op = PL_ppaddr[OP_ENTERSUB](aTHX);
967	SPAGAIN;	1072	SPAGAIN;
968	}	1073	}
969		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
970	/*	1096	/*
971	* this is a _very_ stripped down perl interpreter ;)	1097	* this is a _very_ stripped down perl interpreter ;)
972	*/	1098	*/
973	static void	1099	static void
974	cctx_run (void *arg)	1100	cctx_run (void *arg)
975	{	1101	{
		1102	#ifdef USE_ITHREADS
		1103	# if CORO_PTHREAD
		1104	PERL_SET_CONTEXT (coro_thx);
		1105	# endif
		1106	#endif
		1107	{
976	dTHX;	1108	dTHX;
977		1109
978	/* cctx_run is the alternative tail of transfer(), so unlock here. */	1110	/* entersub called ENTER, but we never 'returned', undo that here */
979	UNLOCK;	1111	SSL_TAIL;
980		1112
981	/* we now skip the entersub that lead to transfer() */	1113	/* we now skip the op that did lead to transfer() */
982	PL_op = PL_op->op_next;	1114	PL_op = PL_op->op_next;
983		1115
984	/* inject a fake subroutine call to cctx_init */	1116	/* inject a fake subroutine call to cctx_init */
985	cctx_prepare (aTHX_ (coro_cctx *)arg);	1117	cctx_prepare (aTHX_ (coro_cctx *)arg);
986		1118
		1119	/* cctx_run is the alternative tail of transfer() */
		1120	transfer_tail (aTHX);
		1121
987	/* 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 */
988	PL_restartop = PL_op;	1123	PL_restartop = PL_op;
989	perl_run (PL_curinterp);	1124	perl_run (PL_curinterp);
990		1125
991	/*	1126	/*
992	* 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
993	* 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)
994	* 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
995	* bootstrap-time "top" top_env, as we cannot restore the "main"	1130	* bootstrap-time "top" top_env, as we cannot restore the "main"
996	* coroutine as Coro has no such concept	1131	* coroutine as Coro has no such concept
997	*/	1132	*/
998	PL_top_env = main_top_env;	1133	PL_top_env = main_top_env;
999	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	}
1000	}	1136	}
1001		1137
1002	static coro_cctx *	1138	static coro_cctx *
1003	cctx_new ()	1139	cctx_new ()
1004	{	1140	{
1005	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 ();
1006	void *stack_start;	1170	void *stack_start;
1007	size_t stack_size;	1171	size_t stack_size;
1008		1172
1009	++cctx_count;
1010
1011	Newz (0, cctx, 1, coro_cctx);
1012
1013	#if HAVE_MMAP	1173	#if HAVE_MMAP
1014	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;
1015	/* mmap supposedly does allocate-on-write for us */	1175	/* mmap supposedly does allocate-on-write for us */
1016	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);
1017		1177
1018	if (cctx->sptr != (void *)-1)	1178	if (cctx->sptr != (void *)-1)
1019	{	1179	{
1020	# if CORO_STACKGUARD	1180	#if CORO_STACKGUARD
1021	mprotect (cctx->sptr, CORO_STACKGUARD * PAGESIZE, PROT_NONE);	1181	mprotect (cctx->sptr, CORO_STACKGUARD * PAGESIZE, PROT_NONE);
1022	# endif	1182	#endif
1023	stack_start = CORO_STACKGUARD * PAGESIZE + (char *)cctx->sptr;	1183	stack_start = (char *)cctx->sptr + CORO_STACKGUARD * PAGESIZE;
1024	stack_size = cctx->ssize - CORO_STACKGUARD * PAGESIZE;	1184	stack_size = cctx->ssize - CORO_STACKGUARD * PAGESIZE;
1025	cctx->flags |= CC_MAPPED;	1185	cctx->flags |= CC_MAPPED;
1026	}	1186	}
1027	else	1187	else
1028	#endif	1188	#endif
1029	{	1189	{
1030	cctx->ssize = coro_stacksize * (long)sizeof (long);	1190	cctx->ssize = cctx_stacksize * (long)sizeof (long);
1031	New (0, cctx->sptr, coro_stacksize, long);	1191	New (0, cctx->sptr, cctx_stacksize, long);
1032		1192
1033	if (!cctx->sptr)	1193	if (!cctx->sptr)
1034	{	1194	{
1035	perror ("FATAL: unable to allocate stack for coroutine");	1195	perror ("FATAL: unable to allocate stack for coroutine, exiting.");
1036	_exit (EXIT_FAILURE);	1196	_exit (EXIT_FAILURE);
1037	}	1197	}
1038		1198
1039	stack_start = cctx->sptr;	1199	stack_start = cctx->sptr;
1040	stack_size = cctx->ssize;	1200	stack_size = cctx->ssize;
1041	}	1201	}
1042		1202
1043	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
1044	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);
1045		1208
1046	return cctx;	1209	return cctx;
1047	}	1210	}
1048		1211
…		…
1051	{	1214	{
1052	if (!cctx)	1215	if (!cctx)
1053	return;	1216	return;
1054		1217
1055	--cctx_count;	1218	--cctx_count;
		1219	coro_destroy (&cctx->cctx);
1056		1220
		1221	/* coro_transfer creates new, empty cctx's */
		1222	if (cctx->sptr)
		1223	{
1057	#if CORO_USE_VALGRIND	1224	#if CORO_USE_VALGRIND
1058	VALGRIND_STACK_DEREGISTER (cctx->valgrind_id);	1225	VALGRIND_STACK_DEREGISTER (cctx->valgrind_id);
1059	#endif	1226	#endif
1060		1227
1061	#if HAVE_MMAP	1228	#if HAVE_MMAP
1062	if (cctx->flags & CC_MAPPED)	1229	if (cctx->flags & CC_MAPPED)
1063	munmap (cctx->sptr, cctx->ssize);	1230	munmap (cctx->sptr, cctx->ssize);
1064	else	1231	else
1065	#endif	1232	#endif
1066	Safefree (cctx->sptr);	1233	Safefree (cctx->sptr);
		1234	}
1067		1235
1068	Safefree (cctx);	1236	Safefree (cctx);
1069	}	1237	}
1070		1238
1071	/* wether this cctx should be destructed */	1239	/* wether this cctx should be destructed */
1072	#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))
1073		1241
1074	static coro_cctx *	1242	static coro_cctx *
1075	cctx_get (pTHX)	1243	cctx_get (pTHX)
1076	{	1244	{
1077	while (expect_true (cctx_first))	1245	while (expect_true (cctx_first))
…		…
1084	return cctx;	1252	return cctx;
1085		1253
1086	cctx_destroy (cctx);	1254	cctx_destroy (cctx);
1087	}	1255	}
1088		1256
1089	return cctx_new ();	1257	return cctx_new_run ();
1090	}	1258	}
1091		1259
1092	static void	1260	static void
1093	cctx_put (coro_cctx *cctx)	1261	cctx_put (coro_cctx *cctx)
1094	{	1262	{
		1263	assert (("FATAL: cctx_put called on non-initialised cctx in Coro (please report)", cctx->sptr));
		1264
1095	/* free another cctx if overlimit */	1265	/* free another cctx if overlimit */
1096	if (expect_false (cctx_idle >= MAX_IDLE_CCTX))	1266	if (expect_false (cctx_idle >= cctx_max_idle))
1097	{	1267	{
1098	coro_cctx *first = cctx_first;	1268	coro_cctx *first = cctx_first;
1099	cctx_first = first->next;	1269	cctx_first = first->next;
1100	--cctx_idle;	1270	--cctx_idle;
1101		1271
…		…
1121	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");
1122		1292
1123	if (expect_false (next->flags & CF_DESTROYED))	1293	if (expect_false (next->flags & CF_DESTROYED))
1124	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");
1125		1295
1126	if (
1127	#if PERL_VERSION_ATLEAST (5,9,0)	1296	#if !PERL_VERSION_ATLEAST (5,10,0)
1128	expect_false (PL_parser)
1129	#else
1130	expect_false (PL_lex_state != LEX_NOTPARSING)	1297	if (expect_false (PL_lex_state != LEX_NOTPARSING))
1131	#endif
1132	)
1133	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
1134	}	1300	}
1135	}	1301	}
1136		1302
1137	/* always use the TRANSFER macro */	1303	/* always use the TRANSFER macro */
1138	static void NOINLINE	1304	static void NOINLINE
1139	transfer (pTHX_ struct coro *prev, struct coro *next)	1305	transfer (pTHX_ struct coro *prev, struct coro *next, int force_cctx)
1140	{	1306	{
1141	dSTACKLEVEL;	1307	dSTACKLEVEL;
1142	static volatile int has_throw;
1143		1308
1144	/* sometimes transfer is only called to set idle_sp */	1309	/* sometimes transfer is only called to set idle_sp */
1145	if (expect_false (!next))	1310	if (expect_false (!next))
1146	{	1311	{
1147	((coro_cctx *)prev)->idle_sp = STACKLEVEL;	1312	((coro_cctx *)prev)->idle_sp = STACKLEVEL;
…		…
1151	{	1316	{
1152	coro_cctx *prev__cctx;	1317	coro_cctx *prev__cctx;
1153		1318
1154	if (expect_false (prev->flags & CF_NEW))	1319	if (expect_false (prev->flags & CF_NEW))
1155	{	1320	{
1156	/* create a new empty context */	1321	/* create a new empty/source context */
1157	Newz (0, prev->cctx, 1, coro_cctx);	1322	prev->cctx = cctx_new_empty ();
1158	prev->flags &= ~CF_NEW;	1323	prev->flags &= ~CF_NEW;
1159	prev->flags |= CF_RUNNING;	1324	prev->flags |= CF_RUNNING;
1160	}	1325	}
1161		1326
1162	prev->flags &= ~CF_RUNNING;	1327	prev->flags &= ~CF_RUNNING;
…		…
1177	else	1342	else
1178	load_perl (aTHX_ next);	1343	load_perl (aTHX_ next);
1179		1344
1180	prev__cctx = prev->cctx;	1345	prev__cctx = prev->cctx;
1181		1346
1182	/* possibly "free" the cctx */	1347	/* possibly untie and reuse the cctx */
1183	if (expect_true (prev__cctx->idle_sp == STACKLEVEL && !(prev__cctx->flags & CC_TRACE)))	1348	if (expect_true (
		1349	prev__cctx->idle_sp == STACKLEVEL
		1350	&& !(prev__cctx->flags & CC_TRACE)
		1351	&& !force_cctx
		1352	))
1184	{	1353	{
1185	/* 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 */
1186	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));
1187		1356
1188	prev->cctx = 0;	1357	prev->cctx = 0;
1189		1358
1190	/* 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 */
1191	/* 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 */
…		…
1199	++next->usecount;	1368	++next->usecount;
1200		1369
1201	if (expect_true (!next->cctx))	1370	if (expect_true (!next->cctx))
1202	next->cctx = cctx_get (aTHX);	1371	next->cctx = cctx_get (aTHX);
1203		1372
1204	has_throw = !!next->throw;	1373	assert (("FATAL: transfer_next already nonzero in Coro (please report)", !transfer_next));
		1374	transfer_next = next;
1205		1375
1206	if (expect_false (prev__cctx != next->cctx))	1376	if (expect_false (prev__cctx != next->cctx))
1207	{	1377	{
1208	prev__cctx->top_env = PL_top_env;	1378	prev__cctx->top_env = PL_top_env;
1209	PL_top_env = next->cctx->top_env;	1379	PL_top_env = next->cctx->top_env;
1210	coro_transfer (&prev__cctx->cctx, &next->cctx->cctx);	1380	coro_transfer (&prev__cctx->cctx, &next->cctx->cctx);
1211	}	1381	}
1212		1382
1213	free_coro_mortal (aTHX);	1383	transfer_tail (aTHX);
1214	UNLOCK;
1215
1216	if (expect_false (has_throw))
1217	{
1218	struct coro *coro = SvSTATE (coro_current);
1219
1220	if (coro->throw)
1221	{
1222	SV *exception = coro->throw;
1223	coro->throw = 0;
1224	sv_setsv (ERRSV, exception);
1225	croak (0);
1226	}
1227	}
1228	}	1384	}
1229	}	1385	}
1230		1386
1231	struct transfer_args
1232	{
1233	struct coro *prev, *next;
1234	};
1235
1236	#define TRANSFER(ta) transfer (aTHX_ (ta).prev, (ta).next)	1387	#define TRANSFER(ta, force_cctx) transfer (aTHX_ (ta).prev, (ta).next, (force_cctx))
1237	#define TRANSFER_CHECK(ta) transfer_check (aTHX_ (ta).prev, (ta).next)	1388	#define TRANSFER_CHECK(ta) transfer_check (aTHX_ (ta).prev, (ta).next)
1238		1389
1239	/** high level stuff ********************************************************/	1390	/** high level stuff ********************************************************/
1240		1391
1241	static int	1392	static int
…		…
1265	croak ("FATAL: tried to destroy currently running coroutine");	1416	croak ("FATAL: tried to destroy currently running coroutine");
1266		1417
1267	save_perl (aTHX_ &temp);	1418	save_perl (aTHX_ &temp);
1268	load_perl (aTHX_ coro);	1419	load_perl (aTHX_ coro);
1269		1420
1270	coro_destroy (aTHX_ coro);	1421	coro_destruct (aTHX_ coro);
1271		1422
1272	load_perl (aTHX_ &temp);	1423	load_perl (aTHX_ &temp);
1273		1424
1274	coro->slot = 0;	1425	coro->slot = 0;
1275	}	1426	}
…		…
1335	{	1486	{
1336	dTHX;	1487	dTHX;
1337	struct transfer_args ta;	1488	struct transfer_args ta;
1338		1489
1339	prepare_transfer (aTHX_ &ta, prev_sv, next_sv);	1490	prepare_transfer (aTHX_ &ta, prev_sv, next_sv);
1340	TRANSFER (ta);	1491	TRANSFER (ta, 1);
1341	}	1492	}
1342		1493
1343	/** Coro ********************************************************************/	1494	/** Coro ********************************************************************/
1344		1495
1345	static void	1496	static void
…		…
1363	static int	1514	static int
1364	api_ready (SV *coro_sv)	1515	api_ready (SV *coro_sv)
1365	{	1516	{
1366	dTHX;	1517	dTHX;
1367	struct coro *coro;	1518	struct coro *coro;
		1519	SV *sv_hook;
		1520	void (*xs_hook)(void);
1368		1521
1369	if (SvROK (coro_sv))	1522	if (SvROK (coro_sv))
1370	coro_sv = SvRV (coro_sv);	1523	coro_sv = SvRV (coro_sv);
1371		1524
1372	coro = SvSTATE (coro_sv);	1525	coro = SvSTATE (coro_sv);
…		…
1375	return 0;	1528	return 0;
1376		1529
1377	coro->flags |= CF_READY;	1530	coro->flags |= CF_READY;
1378		1531
1379	LOCK;	1532	LOCK;
		1533
		1534	sv_hook = coro_nready ? 0 : coro_readyhook;
		1535	xs_hook = coro_nready ? 0 : coroapi.readyhook;
		1536
1380	coro_enq (aTHX_ SvREFCNT_inc (coro_sv));	1537	coro_enq (aTHX_ SvREFCNT_inc_NN (coro_sv));
1381	++coro_nready;	1538	++coro_nready;
		1539
1382	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 ();
1383		1560
1384	return 1;	1561	return 1;
1385	}	1562	}
1386		1563
1387	static int	1564	static int
1388	api_is_ready (SV *coro_sv)	1565	api_is_ready (SV *coro_sv)
1389	{	1566	{
1390	dTHX;	1567	dTHX;
		1568
1391	return !!(SvSTATE (coro_sv)->flags & CF_READY);	1569	return !!(SvSTATE (coro_sv)->flags & CF_READY);
1392	}	1570	}
1393		1571
1394	static void	1572	INLINE void
1395	prepare_schedule (pTHX_ struct transfer_args *ta)	1573	prepare_schedule (pTHX_ struct transfer_args *ta)
1396	{	1574	{
1397	SV *prev_sv, *next_sv;	1575	SV *prev_sv, *next_sv;
1398		1576
1399	for (;;)	1577	for (;;)
…		…
1425	/* cannot transfer to destroyed coros, skip and look for next */	1603	/* cannot transfer to destroyed coros, skip and look for next */
1426	if (expect_false (ta->next->flags & CF_DESTROYED))	1604	if (expect_false (ta->next->flags & CF_DESTROYED))
1427	{	1605	{
1428	UNLOCK;	1606	UNLOCK;
1429	SvREFCNT_dec (next_sv);	1607	SvREFCNT_dec (next_sv);
1430	/* coro_nready is already taken care of by destroy */	1608	/* coro_nready has already been taken care of by destroy */
1431	continue;	1609	continue;
1432	}	1610	}
1433		1611
1434	--coro_nready;	1612	--coro_nready;
1435	UNLOCK;	1613	UNLOCK;
…		…
1438		1616
1439	/* free this only after the transfer */	1617	/* free this only after the transfer */
1440	prev_sv = SvRV (coro_current);	1618	prev_sv = SvRV (coro_current);
1441	ta->prev = SvSTATE (prev_sv);	1619	ta->prev = SvSTATE (prev_sv);
1442	TRANSFER_CHECK (*ta);	1620	TRANSFER_CHECK (*ta);
1443	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));
1444	ta->next->flags &= ~CF_READY;	1622	ta->next->flags &= ~CF_READY;
1445	SvRV_set (coro_current, next_sv);	1623	SvRV_set (coro_current, next_sv);
1446		1624
1447	LOCK;	1625	LOCK;
1448	free_coro_mortal (aTHX);	1626	free_coro_mortal (aTHX);
1449	coro_mortal = prev_sv;	1627	coro_mortal = prev_sv;
1450	UNLOCK;	1628	UNLOCK;
1451	}	1629	}
1452		1630
1453	static void	1631	INLINE void
1454	prepare_cede (pTHX_ struct transfer_args *ta)	1632	prepare_cede (pTHX_ struct transfer_args *ta)
1455	{	1633	{
1456	api_ready (coro_current);	1634	api_ready (coro_current);
1457	prepare_schedule (aTHX_ ta);	1635	prepare_schedule (aTHX_ ta);
1458	}	1636	}
…		…
1476	{	1654	{
1477	dTHX;	1655	dTHX;
1478	struct transfer_args ta;	1656	struct transfer_args ta;
1479		1657
1480	prepare_schedule (aTHX_ &ta);	1658	prepare_schedule (aTHX_ &ta);
1481	TRANSFER (ta);	1659	TRANSFER (ta, 1);
1482	}	1660	}
1483		1661
1484	static int	1662	static int
1485	api_cede (void)	1663	api_cede (void)
1486	{	1664	{
…		…
1489		1667
1490	prepare_cede (aTHX_ &ta);	1668	prepare_cede (aTHX_ &ta);
1491		1669
1492	if (expect_true (ta.prev != ta.next))	1670	if (expect_true (ta.prev != ta.next))
1493	{	1671	{
1494	TRANSFER (ta);	1672	TRANSFER (ta, 1);
1495	return 1;	1673	return 1;
1496	}	1674	}
1497	else	1675	else
1498	return 0;	1676	return 0;
1499	}	1677	}
…		…
1504	dTHX;	1682	dTHX;
1505	struct transfer_args ta;	1683	struct transfer_args ta;
1506		1684
1507	if (prepare_cede_notself (aTHX_ &ta))	1685	if (prepare_cede_notself (aTHX_ &ta))
1508	{	1686	{
1509	TRANSFER (ta);	1687	TRANSFER (ta, 1);
1510	return 1;	1688	return 1;
1511	}	1689	}
1512	else	1690	else
1513	return 0;	1691	return 0;
1514	}	1692	}
…		…
1520	struct coro *coro = SvSTATE (coro_sv);	1698	struct coro *coro = SvSTATE (coro_sv);
1521		1699
1522	if (flags & CC_TRACE)	1700	if (flags & CC_TRACE)
1523	{	1701	{
1524	if (!coro->cctx)	1702	if (!coro->cctx)
1525	coro->cctx = cctx_new ();	1703	coro->cctx = cctx_new_run ();
1526	else if (!(coro->cctx->flags & CC_TRACE))	1704	else if (!(coro->cctx->flags & CC_TRACE))
1527	croak ("cannot enable tracing on coroutine with custom stack");	1705	croak ("cannot enable tracing on coroutine with custom stack");
1528		1706
1529	coro->cctx->flags |= CC_NOREUSE | (flags & (CC_TRACE | CC_TRACE_ALL));	1707	coro->cctx->flags |= CC_NOREUSE | (flags & (CC_TRACE | CC_TRACE_ALL));
1530	}	1708	}
…		…
1537	else	1715	else
1538	coro->slot->runops = RUNOPS_DEFAULT;	1716	coro->slot->runops = RUNOPS_DEFAULT;
1539	}	1717	}
1540	}	1718	}
1541		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
1542	MODULE = Coro::State PACKAGE = Coro::State PREFIX = api_	1903	MODULE = Coro::State PACKAGE = Coro::State PREFIX = api_
1543		1904
1544	PROTOTYPES: DISABLE	1905	PROTOTYPES: DISABLE
1545
1546	BOOT:
1547	{
1548	#ifdef USE_ITHREADS
1549	MUTEX_INIT (&coro_mutex);
1550	#endif
1551	BOOT_PAGESIZE;
1552
1553	irsgv = gv_fetchpv ("/" , GV_ADD|GV_NOTQUAL, SVt_PV);
1554	stdoutgv = gv_fetchpv ("STDOUT", GV_ADD|GV_NOTQUAL, SVt_PVIO);
1555
1556	orig_sigelem_get = PL_vtbl_sigelem.svt_get;
1557	PL_vtbl_sigelem.svt_get = coro_sigelem_get;
1558	orig_sigelem_set = PL_vtbl_sigelem.svt_set;
1559	PL_vtbl_sigelem.svt_set = coro_sigelem_set;
1560
1561	hv_sig = coro_get_hv (aTHX_ "SIG", TRUE);
1562	rv_diehook = newRV_inc ((SV *)gv_fetchpv ("Coro::State::diehook" , 0, SVt_PVCV));
1563	rv_warnhook = newRV_inc ((SV *)gv_fetchpv ("Coro::State::warnhook", 0, SVt_PVCV));
1564
1565	coro_state_stash = gv_stashpv ("Coro::State", TRUE);
1566
1567	newCONSTSUB (coro_state_stash, "CC_TRACE" , newSViv (CC_TRACE));
1568	newCONSTSUB (coro_state_stash, "CC_TRACE_SUB" , newSViv (CC_TRACE_SUB));
1569	newCONSTSUB (coro_state_stash, "CC_TRACE_LINE", newSViv (CC_TRACE_LINE));
1570	newCONSTSUB (coro_state_stash, "CC_TRACE_ALL" , newSViv (CC_TRACE_ALL));
1571
1572	main_mainstack = PL_mainstack;
1573	main_top_env = PL_top_env;
1574
1575	while (main_top_env->je_prev)
1576	main_top_env = main_top_env->je_prev;
1577
1578	coroapi.ver = CORO_API_VERSION;
1579	coroapi.rev = CORO_API_REVISION;
1580	coroapi.transfer = api_transfer;
1581
1582	assert (("PRIO_NORMAL must be 0", !PRIO_NORMAL));
1583	}
1584
1585	SV *
1586	new (char *klass, ...)
1587	CODE:
1588	{
1589	struct coro *coro;
1590	MAGIC *mg;
1591	HV *hv;
1592	int i;
1593
1594	Newz (0, coro, 1, struct coro);
1595	coro->args = newAV ();
1596	coro->flags = CF_NEW;
1597
1598	if (coro_first) coro_first->prev = coro;
1599	coro->next = coro_first;
1600	coro_first = coro;
1601
1602	coro->hv = hv = newHV ();
1603	mg = sv_magicext ((SV *)hv, 0, CORO_MAGIC_type_state, &coro_state_vtbl, (char *)coro, 0);
1604	mg->mg_flags |= MGf_DUP;
1605	RETVAL = sv_bless (newRV_noinc ((SV *)hv), gv_stashpv (klass, 1));
1606
1607	av_extend (coro->args, items - 1);
1608	for (i = 1; i < items; i++)
1609	av_push (coro->args, newSVsv (ST (i)));
1610	}
1611	OUTPUT:
1612	RETVAL
1613		1906
1614	# 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
1615	# 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
1616	# stack offset	1909	# stack offset
1617	void	1910	void
…		…
1621	Coro::schedule = 2	1914	Coro::schedule = 2
1622	Coro::cede = 3	1915	Coro::cede = 3
1623	Coro::cede_notself = 4	1916	Coro::cede_notself = 4
1624	CODE:	1917	CODE:
1625	{	1918	{
1626	struct transfer_args ta;	1919	assert (("FATAL: ssl call recursion in Coro module (please report)", PL_op->op_ppaddr != pp_set_stacklevel));
1627		1920
1628	PUTBACK;	1921	/* we patch the op, and then re-run the whole call */
1629	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
1630	{	1978	{
1631	case 0:	1979	SV **svp = hv_fetch (PL_modglobal, "Time::NVtime", 12, 0);
1632	ta.prev = (struct coro *)INT2PTR (coro_cctx *, SvIV (ST (0)));
1633	ta.next = 0;
1634	break;
1635		1980
1636	case 1:	1981	if (!svp) croak ("Time::HiRes is required");
1637	if (items != 2)	1982	if (!SvIOK (*svp)) croak ("Time::NVtime isn't a function pointer");
1638	croak ("Coro::State::transfer (prev,next) expects two arguments, not %d", items);
1639		1983
1640	prepare_transfer (aTHX_ &ta, ST (0), ST (1));	1984	nvtime = INT2PTR (double (*)(), SvIV (*svp));
1641	break;
1642
1643	case 2:
1644	prepare_schedule (aTHX_ &ta);
1645	break;
1646
1647	case 3:
1648	prepare_cede (aTHX_ &ta);
1649	break;
1650
1651	case 4:
1652	if (!prepare_cede_notself (aTHX_ &ta))
1653	XSRETURN_EMPTY;
1654
1655	break;
1656	}	1985	}
1657	SPAGAIN;
1658		1986
1659	BARRIER;	1987	assert (("PRIO_NORMAL must be 0", !PRIO_NORMAL));
1660	PUTBACK;
1661	TRANSFER (ta);
1662	SPAGAIN; /* might be the sp of a different coroutine now */
1663	/* be extra careful not to ever do anything after TRANSFER */
1664	}	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
1665		2018
1666	bool	2019	bool
1667	_destroy (SV *coro_sv)	2020	_destroy (SV *coro_sv)
1668	CODE:	2021	CODE:
1669	RETVAL = coro_state_destroy (aTHX_ SvSTATE (coro_sv));	2022	RETVAL = coro_state_destroy (aTHX_ SvSTATE (coro_sv));
1670	OUTPUT:	2023	OUTPUT:
1671	RETVAL	2024	RETVAL
1672		2025
1673	void	2026	void
1674	_exit (code)	2027	_exit (int code)
1675	int code
1676	PROTOTYPE: $	2028	PROTOTYPE: $
1677	CODE:	2029	CODE:
1678	_exit (code);	2030	_exit (code);
1679		2031
1680	int	2032	int
1681	cctx_stacksize (int new_stacksize = 0)	2033	cctx_stacksize (int new_stacksize = 0)
1682	CODE:	2034	CODE:
1683	RETVAL = coro_stacksize;	2035	RETVAL = cctx_stacksize;
1684	if (new_stacksize)	2036	if (new_stacksize)
		2037	{
1685	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;
1686	OUTPUT:	2050	OUTPUT:
1687	RETVAL	2051	RETVAL
1688		2052
1689	int	2053	int
1690	cctx_count ()	2054	cctx_count ()
…		…
1714	call (Coro::State coro, SV *coderef)	2078	call (Coro::State coro, SV *coderef)
1715	ALIAS:	2079	ALIAS:
1716	eval = 1	2080	eval = 1
1717	CODE:	2081	CODE:
1718	{	2082	{
1719	if (coro->mainstack)	2083	if (coro->mainstack && ((coro->flags & CF_RUNNING) || coro->slot))
1720	{	2084	{
1721	struct coro temp;	2085	struct coro temp;
1722		2086
1723	if (!(coro->flags & CF_RUNNING))	2087	if (!(coro->flags & CF_RUNNING))
1724	{	2088	{
…		…
1768	RETVAL = boolSV (coro->flags & ix);	2132	RETVAL = boolSV (coro->flags & ix);
1769	OUTPUT:	2133	OUTPUT:
1770	RETVAL	2134	RETVAL
1771		2135
1772	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
1773	api_trace (SV *coro, int flags = CC_TRACE | CC_TRACE_SUB)	2144	api_trace (SV *coro, int flags = CC_TRACE | CC_TRACE_SUB)
1774		2145
1775	SV *	2146	SV *
1776	has_stack (Coro::State coro)	2147	has_cctx (Coro::State coro)
1777	PROTOTYPE: $	2148	PROTOTYPE: $
1778	CODE:	2149	CODE:
1779	RETVAL = boolSV (!!coro->cctx);	2150	RETVAL = boolSV (!!coro->cctx);
1780	OUTPUT:	2151	OUTPUT:
1781	RETVAL	2152	RETVAL
…		…
1786	CODE:	2157	CODE:
1787	RETVAL = (coro->cctx ? coro->cctx->flags : 0) & CC_TRACE_ALL;	2158	RETVAL = (coro->cctx ? coro->cctx->flags : 0) & CC_TRACE_ALL;
1788	OUTPUT:	2159	OUTPUT:
1789	RETVAL	2160	RETVAL
1790		2161
1791	IV	2162	UV
1792	rss (Coro::State coro)	2163	rss (Coro::State coro)
1793	PROTOTYPE: $	2164	PROTOTYPE: $
1794	ALIAS:	2165	ALIAS:
1795	usecount = 1	2166	usecount = 1
1796	CODE:	2167	CODE:
…		…
1800	case 1: RETVAL = coro->usecount; break;	2171	case 1: RETVAL = coro->usecount; break;
1801	}	2172	}
1802	OUTPUT:	2173	OUTPUT:
1803	RETVAL	2174	RETVAL
1804		2175
		2176	void
		2177	force_cctx ()
		2178	CODE:
		2179	struct coro *coro = SvSTATE (coro_current);
		2180	coro->cctx->idle_sp = 0;
		2181
		2182	void
		2183	swap_defsv (Coro::State self)
		2184	PROTOTYPE: $
		2185	ALIAS:
		2186	swap_defav = 1
		2187	CODE:
		2188	if (!self->slot)
		2189	croak ("cannot swap state with coroutine that has no saved state");
		2190	else
		2191	{
		2192	SV **src = ix ? (SV **)&GvAV (PL_defgv) : &GvSV (PL_defgv);
		2193	SV **dst = ix ? (SV **)&self->slot->defav : (SV **)&self->slot->defsv;
		2194
		2195	SV *tmp = *src; *src = *dst; *dst = tmp;
		2196	}
1805		2197
1806	MODULE = Coro::State PACKAGE = Coro	2198	MODULE = Coro::State PACKAGE = Coro
1807		2199
1808	BOOT:	2200	BOOT:
1809	{	2201	{
1810	int i;	2202	int i;
1811		2203
		2204	av_async_pool = coro_get_av (aTHX_ "Coro::async_pool", TRUE);
1812	sv_pool_rss = coro_get_sv (aTHX_ "Coro::POOL_RSS" , TRUE);	2205	sv_pool_rss = coro_get_sv (aTHX_ "Coro::POOL_RSS" , TRUE);
1813	sv_pool_size = coro_get_sv (aTHX_ "Coro::POOL_SIZE" , TRUE);	2206	sv_pool_size = coro_get_sv (aTHX_ "Coro::POOL_SIZE" , TRUE);
1814	av_async_pool = coro_get_av (aTHX_ "Coro::async_pool", TRUE);
1815		2207
1816	coro_current = coro_get_sv (aTHX_ "Coro::current", FALSE);	2208	coro_current = coro_get_sv (aTHX_ "Coro::current", FALSE);
1817	SvREADONLY_on (coro_current);	2209	SvREADONLY_on (coro_current);
1818		2210
1819	coro_stash = gv_stashpv ("Coro", TRUE);	2211	coro_stash = gv_stashpv ("Coro", TRUE);
…		…
1827		2219
1828	for (i = PRIO_MAX - PRIO_MIN + 1; i--; )	2220	for (i = PRIO_MAX - PRIO_MIN + 1; i--; )
1829	coro_ready[i] = newAV ();	2221	coro_ready[i] = newAV ();
1830		2222
1831	{	2223	{
1832	SV *sv = perl_get_sv ("Coro::API", TRUE);	2224	SV *sv = coro_get_sv (aTHX_ "Coro::API", TRUE);
1833	perl_get_sv ("Coro::API", TRUE); /* silence 5.10 warning */
1834		2225
1835	coroapi.schedule = api_schedule;	2226	coroapi.schedule = api_schedule;
1836	coroapi.cede = api_cede;	2227	coroapi.cede = api_cede;
1837	coroapi.cede_notself = api_cede_notself;	2228	coroapi.cede_notself = api_cede_notself;
1838	coroapi.ready = api_ready;	2229	coroapi.ready = api_ready;
…		…
1849	void	2240	void
1850	_set_current (SV *current)	2241	_set_current (SV *current)
1851	PROTOTYPE: $	2242	PROTOTYPE: $
1852	CODE:	2243	CODE:
1853	SvREFCNT_dec (SvRV (coro_current));	2244	SvREFCNT_dec (SvRV (coro_current));
1854	SvRV_set (coro_current, SvREFCNT_inc (SvRV (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;
1855		2255
1856	int	2256	int
1857	prio (Coro::State coro, int newprio = 0)	2257	prio (Coro::State coro, int newprio = 0)
1858	ALIAS:	2258	ALIAS:
1859	nice = 1	2259	nice = 1
…		…
1889	CODE:	2289	CODE:
1890	RETVAL = coro_nready;	2290	RETVAL = coro_nready;
1891	OUTPUT:	2291	OUTPUT:
1892	RETVAL	2292	RETVAL
1893		2293
1894	void
1895	throw (Coro::State self, SV *throw = &PL_sv_undef)
1896	PROTOTYPE: $;$
1897	CODE:
1898	SvREFCNT_dec (self->throw);
1899	self->throw = SvOK (throw) ? newSVsv (throw) : 0;
1900
1901	# for async_pool speedup	2294	# for async_pool speedup
1902	void	2295	void
1903	_pool_1 (SV *cb)	2296	_pool_1 (SV *cb)
1904	CODE:	2297	CODE:
1905	{	2298	{
…		…
1910	AV *invoke_av;	2303	AV *invoke_av;
1911	int i, len;	2304	int i, len;
1912		2305
1913	if (!invoke)	2306	if (!invoke)
1914	{	2307	{
1915	SvREFCNT_dec (PL_diehook); PL_diehook = 0;	2308	SV *old = PL_diehook;
		2309	PL_diehook = 0;
		2310	SvREFCNT_dec (old);
1916	croak ("\3async_pool terminate\2\n");	2311	croak ("\3async_pool terminate\2\n");
1917	}	2312	}
1918		2313
1919	SvREFCNT_dec (coro->saved_deffh);	2314	SvREFCNT_dec (coro->saved_deffh);
1920	coro->saved_deffh = SvREFCNT_inc ((SV *)PL_defoutgv);	2315	coro->saved_deffh = SvREFCNT_inc_NN ((SV *)PL_defoutgv);
1921		2316
1922	hv_store (hv, "desc", sizeof ("desc") - 1,	2317	hv_store (hv, "desc", sizeof ("desc") - 1,
1923	newSVpvn ("[async_pool]", sizeof ("[async_pool]") - 1), 0);	2318	newSVpvn ("[async_pool]", sizeof ("[async_pool]") - 1), 0);
1924		2319
1925	invoke_av = (AV *)SvRV (invoke);	2320	invoke_av = (AV *)SvRV (invoke);
…		…
1929		2324
1930	if (len > 0)	2325	if (len > 0)
1931	{	2326	{
1932	av_fill (defav, len - 1);	2327	av_fill (defav, len - 1);
1933	for (i = 0; i < len; ++i)	2328	for (i = 0; i < len; ++i)
1934	av_store (defav, i, SvREFCNT_inc (AvARRAY (invoke_av)[i + 1]));	2329	av_store (defav, i, SvREFCNT_inc_NN (AvARRAY (invoke_av)[i + 1]));
1935	}	2330	}
1936		2331
1937	SvREFCNT_dec (invoke);	2332	SvREFCNT_dec (invoke);
1938	}	2333	}
1939		2334
…		…
1946	sv_setsv (cb, &PL_sv_undef);	2341	sv_setsv (cb, &PL_sv_undef);
1947		2342
1948	SvREFCNT_dec ((SV *)PL_defoutgv); PL_defoutgv = (GV *)coro->saved_deffh;	2343	SvREFCNT_dec ((SV *)PL_defoutgv); PL_defoutgv = (GV *)coro->saved_deffh;
1949	coro->saved_deffh = 0;	2344	coro->saved_deffh = 0;
1950		2345
1951	if (coro_rss (aTHX_ coro) > SvIV (sv_pool_rss)	2346	if (coro_rss (aTHX_ coro) > SvUV (sv_pool_rss)
1952	|| av_len (av_async_pool) + 1 >= SvIV (sv_pool_size))	2347	|| av_len (av_async_pool) + 1 >= SvIV (sv_pool_size))
1953	{	2348	{
1954	SvREFCNT_dec (PL_diehook); PL_diehook = 0;	2349	SV *old = PL_diehook;
		2350	PL_diehook = 0;
		2351	SvREFCNT_dec (old);
1955	croak ("\3async_pool terminate\2\n");	2352	croak ("\3async_pool terminate\2\n");
1956	}	2353	}
1957		2354
1958	av_clear (GvAV (PL_defgv));	2355	av_clear (GvAV (PL_defgv));
1959	hv_store ((HV *)SvRV (coro_current), "desc", sizeof ("desc") - 1,	2356	hv_store ((HV *)SvRV (coro_current), "desc", sizeof ("desc") - 1,
…		…
1965	api_trace (coro_current, 0);	2362	api_trace (coro_current, 0);
1966		2363
1967	av_push (av_async_pool, newSVsv (coro_current));	2364	av_push (av_async_pool, newSVsv (coro_current));
1968	}	2365	}
1969		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
1970		2415
1971	MODULE = Coro::State PACKAGE = Coro::AIO	2416	MODULE = Coro::State PACKAGE = Coro::AIO
1972		2417
1973	SV *	2418	void
1974	_get_state ()	2419	_get_state (SV *self)
1975	CODE:	2420	PPCODE:
1976	{	2421	{
1977	struct io_state *data;	2422	AV *defav = GvAV (PL_defgv);
1978		2423	AV *av = newAV ();
		2424	int i;
1979	RETVAL = newSV (sizeof (struct io_state));	2425	SV *data_sv = newSV (sizeof (struct io_state));
1980	data = (struct io_state *)SvPVX (RETVAL);	2426	struct io_state *data = (struct io_state *)SvPVX (data_sv);
1981	SvCUR_set (RETVAL, sizeof (struct io_state));	2427	SvCUR_set (data_sv, sizeof (struct io_state));
1982	SvPOK_only (RETVAL);	2428	SvPOK_only (data_sv);
1983		2429
1984	data->errorno = errno;	2430	data->errorno = errno;
1985	data->laststype = PL_laststype;	2431	data->laststype = PL_laststype;
1986	data->laststatval = PL_laststatval;	2432	data->laststatval = PL_laststatval;
1987	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);
1988	}	2445	}
1989	OUTPUT:
1990	RETVAL
1991		2446
1992	void	2447	void
1993	_set_state (char *data_)	2448	_set_state (SV *state)
1994	PROTOTYPE: $	2449	PROTOTYPE: $
1995	CODE:	2450	PPCODE:
1996	{	2451	{
1997	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;
1998		2455
1999	errno = data->errorno;	2456	errno = data->errorno;
2000	PL_laststype = data->laststype;	2457	PL_laststype = data->laststype;
2001	PL_laststatval = data->laststatval;	2458	PL_laststatval = data->laststatval;
2002	PL_statcache = data->statcache;	2459	PL_statcache = data->statcache;
2003	}
2004		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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