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

Comparing Coro/Coro/State.xs (file contents):
Revision 1.223 by root, Wed Feb 13 15:46:00 2008 UTC vs.
Revision 1.269 by root, Fri Nov 14 06:50:11 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	99	#endif
84		100
85	/* 5.11 */
86	#ifndef CxHASARGS
87	# define CxHASARGS(cx) (cx)->blk_sub.hasargs
88	#endif
89
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)
93	#endif	104	#endif
94		105
…		…
105	# define CORO_PREFER_PERL_FUNCTIONS 0	116	# define CORO_PREFER_PERL_FUNCTIONS 0
106	#endif	117	#endif
107		118
108	/* The next macros try to return the current stack pointer, in an as	119	/* The next macros try to return the current stack pointer, in an as
109	* portable way as possible. */	120	* portable way as possible. */
110	#define dSTACKLEVEL volatile char stacklevel	121	#if __GNUC__ >= 4
111	#define STACKLEVEL ((void *)&stacklevel)	122	# define dSTACKLEVEL void *stacklevel = __builtin_frame_address (0)
		123	#else
		124	# define dSTACKLEVEL volatile void stacklevel = (volatile void )&stacklevel
		125	#endif
112		126
113	#define IN_DESTRUCT (PL_main_cv == Nullcv)	127	#define IN_DESTRUCT (PL_main_cv == Nullcv)
114		128
115	#if __GNUC__ >= 3	129	#if __GNUC__ >= 3
116	# define attribute(x) __attribute__(x)	130	# define attribute(x) __attribute__(x)
117	# define BARRIER __asm__ __volatile__ ("" : : : "memory")
118	# define expect(expr,value) __builtin_expect ((expr),(value))	131	# define expect(expr,value) __builtin_expect ((expr),(value))
		132	# define INLINE static inline
119	#else	133	#else
120	# define attribute(x)	134	# define attribute(x)
121	# define BARRIER
122	# define expect(expr,value) (expr)	135	# define expect(expr,value) (expr)
		136	# define INLINE static
123	#endif	137	#endif
124		138
125	#define expect_false(expr) expect ((expr) != 0, 0)	139	#define expect_false(expr) expect ((expr) != 0, 0)
126	#define expect_true(expr) expect ((expr) != 0, 1)	140	#define expect_true(expr) expect ((expr) != 0, 1)
127		141
128	#define NOINLINE attribute ((noinline))	142	#define NOINLINE attribute ((noinline))
129		143
130	#include "CoroAPI.h"	144	#include "CoroAPI.h"
131		145
132	#ifdef USE_ITHREADS	146	#ifdef USE_ITHREADS
		147
133	static perl_mutex coro_mutex;	148	static perl_mutex coro_lock;
134	# define LOCK do { MUTEX_LOCK (&coro_mutex); } while (0)	149	# define LOCK do { MUTEX_LOCK (&coro_lock); } while (0)
135	# define UNLOCK do { MUTEX_UNLOCK (&coro_mutex); } while (0)	150	# define UNLOCK do { MUTEX_UNLOCK (&coro_lock); } while (0)
		151	# if CORO_PTHREAD
		152	static void *coro_thx;
		153	# endif
		154
136	#else	155	#else
		156
137	# define LOCK (void)0	157	# define LOCK (void)0
138	# define UNLOCK (void)0	158	# define UNLOCK (void)0
		159
139	#endif	160	#endif
		161
		162	# undef LOCK
		163	# define LOCK (void)0
		164	# undef UNLOCK
		165	# define UNLOCK (void)0
140		166
141	/* helper storage struct for Coro::AIO */	167	/* helper storage struct for Coro::AIO */
142	struct io_state	168	struct io_state
143	{	169	{
		170	AV *res;
144	int errorno;	171	int errorno;
145	I32 laststype;	172	I32 laststype; /* U16 in 5.10.0 */
146	int laststatval;	173	int laststatval;
147	Stat_t statcache;	174	Stat_t statcache;
148	};	175	};
149		176
		177	static double (nvtime)(); / so why doesn't it take void? */
		178
		179	static U32 cctx_gen;
150	static size_t coro_stacksize = CORO_STACKSIZE;	180	static size_t cctx_stacksize = CORO_STACKSIZE;
151	static struct CoroAPI coroapi;	181	static struct CoroAPI coroapi;
152	static AV main_mainstack; / used to differentiate between $main and others */	182	static AV main_mainstack; / used to differentiate between $main and others */
153	static JMPENV *main_top_env;	183	static JMPENV *main_top_env;
154	static HV coro_state_stash, coro_stash;	184	static HV coro_state_stash, coro_stash;
155	static volatile SV coro_mortal; / will be freed after next transfer */	185	static volatile SV coro_mortal; / will be freed/thrown after next transfer */
		186	static volatile struct coro *transfer_next;
		187
		188	struct transfer_args
		189	{
		190	struct coro prev, next;
		191	};
156		192
157	static GV irsgv; / $/ */	193	static GV irsgv; / $/ */
158	static GV stdoutgv; / STDOUT /	194	static GV stdoutgv; / STDOUT /
159	static SV *rv_diehook;	195	static SV *rv_diehook;
160	static SV *rv_warnhook;	196	static SV *rv_warnhook;
…		…
162		198
163	/* async_pool helper stuff */	199	/* async_pool helper stuff */
164	static SV *sv_pool_rss;	200	static SV *sv_pool_rss;
165	static SV *sv_pool_size;	201	static SV *sv_pool_size;
166	static AV *av_async_pool;	202	static AV *av_async_pool;
		203
		204	/* Coro::AnyEvent */
		205	static SV *sv_activity;
167		206
168	static struct coro_cctx *cctx_first;	207	static struct coro_cctx *cctx_first;
169	static int cctx_count, cctx_idle;	208	static int cctx_count, cctx_idle;
170		209
171	enum {	210	enum {
…		…
189	void idle_sp; / sp of top-level transfer/schedule/cede call */	228	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 */	229	JMPENV idle_te; / same as idle_sp, but for top_env, TODO: remove once stable */
191	JMPENV *top_env;	230	JMPENV *top_env;
192	coro_context cctx;	231	coro_context cctx;
193		232
		233	U32 gen;
194	#if CORO_USE_VALGRIND	234	#if CORO_USE_VALGRIND
195	int valgrind_id;	235	int valgrind_id;
196	#endif	236	#endif
197	unsigned char flags;	237	unsigned char flags;
198	} coro_cctx;	238	} coro_cctx;
…		…
257	#define PRIO_IDLE -3	297	#define PRIO_IDLE -3
258	#define PRIO_MIN -4	298	#define PRIO_MIN -4
259		299
260	/* for Coro.pm */	300	/* for Coro.pm */
261	static SV *coro_current;	301	static SV *coro_current;
		302	static SV *coro_readyhook;
262	static AV *coro_ready [PRIO_MAX-PRIO_MIN+1];	303	static AV *coro_ready [PRIO_MAX - PRIO_MIN + 1];
263	static int coro_nready;	304	static int coro_nready;
264	static struct coro *coro_first;	305	static struct coro *coro_first;
265		306
266	/ lowlevel stuff ********************************************************/	307	/ lowlevel stuff ********************************************************/
267		308
268	static SV *	309	static SV *
269	coro_get_sv (pTHX_ const char *name, int create)	310	coro_get_sv (pTHX_ const char *name, int create)
270	{	311	{
271	#if PERL_VERSION_ATLEAST (5,9,0)	312	#if PERL_VERSION_ATLEAST (5,10,0)
272	/* silence stupid and wrong 5.10 warning that I am unable to switch off */	313	/* silence stupid and wrong 5.10 warning that I am unable to switch off */
273	get_sv (name, create);	314	get_sv (name, create);
274	#endif	315	#endif
275	return get_sv (name, create);	316	return get_sv (name, create);
276	}	317	}
277		318
278	static AV *	319	static AV *
279	coro_get_av (pTHX_ const char *name, int create)	320	coro_get_av (pTHX_ const char *name, int create)
280	{	321	{
281	#if PERL_VERSION_ATLEAST (5,9,0)	322	#if PERL_VERSION_ATLEAST (5,10,0)
282	/* silence stupid and wrong 5.10 warning that I am unable to switch off */	323	/* silence stupid and wrong 5.10 warning that I am unable to switch off */
283	get_av (name, create);	324	get_av (name, create);
284	#endif	325	#endif
285	return get_av (name, create);	326	return get_av (name, create);
286	}	327	}
287		328
288	static HV *	329	static HV *
289	coro_get_hv (pTHX_ const char *name, int create)	330	coro_get_hv (pTHX_ const char *name, int create)
290	{	331	{
291	#if PERL_VERSION_ATLEAST (5,9,0)	332	#if PERL_VERSION_ATLEAST (5,10,0)
292	/* silence stupid and wrong 5.10 warning that I am unable to switch off */	333	/* silence stupid and wrong 5.10 warning that I am unable to switch off */
293	get_hv (name, create);	334	get_hv (name, create);
294	#endif	335	#endif
295	return get_hv (name, create);	336	return get_hv (name, create);
296	}	337	}
…		…
301	AV *padlist = CvPADLIST (cv);	342	AV *padlist = CvPADLIST (cv);
302	AV newpadlist, newpad;	343	AV newpadlist, newpad;
303		344
304	newpadlist = newAV ();	345	newpadlist = newAV ();
305	AvREAL_off (newpadlist);	346	AvREAL_off (newpadlist);
306	#if PERL_VERSION_ATLEAST (5,9,0)	347	#if PERL_VERSION_ATLEAST (5,10,0)
307	Perl_pad_push (aTHX_ padlist, AvFILLp (padlist) + 1);	348	Perl_pad_push (aTHX_ padlist, AvFILLp (padlist) + 1);
308	#else	349	#else
309	Perl_pad_push (aTHX_ padlist, AvFILLp (padlist) + 1, 1);	350	Perl_pad_push (aTHX_ padlist, AvFILLp (padlist) + 1, 1);
310	#endif	351	#endif
311	newpad = (AV *)AvARRAY (padlist)[AvFILLp (padlist)];	352	newpad = (AV *)AvARRAY (padlist)[AvFILLp (padlist)];
312	--AvFILLp (padlist);	353	--AvFILLp (padlist);
313		354
314	av_store (newpadlist, 0, SvREFCNT_inc (*av_fetch (padlist, 0, FALSE)));	355	av_store (newpadlist, 0, SvREFCNT_inc_NN (*av_fetch (padlist, 0, FALSE)));
315	av_store (newpadlist, 1, (SV *)newpad);	356	av_store (newpadlist, 1, (SV *)newpad);
316		357
317	return newpadlist;	358	return newpadlist;
318	}	359	}
319		360
…		…
349		390
350	/* casting is fun. */	391	/* casting is fun. */
351	while (&PL_sv_undef != (SV )(padlist = (AV )av_pop (av)))	392	while (&PL_sv_undef != (SV )(padlist = (AV )av_pop (av)))
352	free_padlist (aTHX_ padlist);	393	free_padlist (aTHX_ padlist);
353		394
		395	SvREFCNT_dec (av); /* sv_magicext increased the refcount */
		396
354	return 0;	397	return 0;
355	}	398	}
356		399
357	#define CORO_MAGIC_type_cv PERL_MAGIC_ext	400	#define CORO_MAGIC_type_cv PERL_MAGIC_ext
358	#define CORO_MAGIC_type_state PERL_MAGIC_ext	401	#define CORO_MAGIC_type_state PERL_MAGIC_ext
…		…
360	static MGVTBL coro_cv_vtbl = {	403	static MGVTBL coro_cv_vtbl = {
361	0, 0, 0, 0,	404	0, 0, 0, 0,
362	coro_cv_free	405	coro_cv_free
363	};	406	};
364		407
365	#define CORO_MAGIC(sv,type) \	408	#define CORO_MAGIC(sv, type) \
366	SvMAGIC (sv) \	409	SvMAGIC (sv) \
367	? SvMAGIC (sv)->mg_type == type \	410	? SvMAGIC (sv)->mg_type == type \
368	? SvMAGIC (sv) \	411	? SvMAGIC (sv) \
369	: mg_find (sv, type) \	412	: mg_find (sv, type) \
370	: 0	413	: 0
371		414
372	#define CORO_MAGIC_cv(cv) CORO_MAGIC (((SV *)(cv)), CORO_MAGIC_type_cv)	415	#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)	416	#define CORO_MAGIC_state(sv) CORO_MAGIC (((SV *)(sv)), CORO_MAGIC_type_state)
374		417
375	static struct coro *	418	INLINE struct coro *
376	SvSTATE_ (pTHX_ SV *coro)	419	SvSTATE_ (pTHX_ SV *coro)
377	{	420	{
378	HV *stash;	421	HV *stash;
379	MAGIC *mg;	422	MAGIC *mg;
380		423
…		…
408	if (expect_true (mg && AvFILLp ((av = (AV *)mg->mg_obj)) >= 0))	451	if (expect_true (mg && AvFILLp ((av = (AV *)mg->mg_obj)) >= 0))
409	CvPADLIST (cv) = (AV *)AvARRAY (av)[AvFILLp (av)--];	452	CvPADLIST (cv) = (AV *)AvARRAY (av)[AvFILLp (av)--];
410	else	453	else
411	{	454	{
412	#if CORO_PREFER_PERL_FUNCTIONS	455	#if CORO_PREFER_PERL_FUNCTIONS
413	/* this is probably cleaner, but also slower? */	456	/* this is probably cleaner? but also slower! */
		457	/* in practise, it seems to be less stable */
414	CV *cp = Perl_cv_clone (cv);	458	CV *cp = Perl_cv_clone (cv);
415	CvPADLIST (cv) = CvPADLIST (cp);	459	CvPADLIST (cv) = CvPADLIST (cp);
416	CvPADLIST (cp) = 0;	460	CvPADLIST (cp) = 0;
417	SvREFCNT_dec (cp);	461	SvREFCNT_dec (cp);
418	#else	462	#else
…		…
502		546
503	if (expect_true (CvDEPTH (cv)))	547	if (expect_true (CvDEPTH (cv)))
504	{	548	{
505	EXTEND (SP, 3);	549	EXTEND (SP, 3);
506	PUSHs ((SV *)CvPADLIST (cv));	550	PUSHs ((SV *)CvPADLIST (cv));
507	PUSHs (INT2PTR (SV *, CvDEPTH (cv)));	551	PUSHs (INT2PTR (SV *, (IV)CvDEPTH (cv)));
508	PUSHs ((SV *)cv);	552	PUSHs ((SV *)cv);
509		553
510	CvDEPTH (cv) = 0;	554	CvDEPTH (cv) = 0;
511	get_padlist (aTHX_ cv);	555	get_padlist (aTHX_ cv);
512	}	556	}
…		…
592		636
593	New(54,PL_savestack,24,ANY);	637	New(54,PL_savestack,24,ANY);
594	PL_savestack_ix = 0;	638	PL_savestack_ix = 0;
595	PL_savestack_max = 24;	639	PL_savestack_max = 24;
596		640
597	#if !PERL_VERSION_ATLEAST (5,9,0)	641	#if !PERL_VERSION_ATLEAST (5,10,0)
598	New(54,PL_retstack,4,OP*);	642	New(54,PL_retstack,4,OP*);
599	PL_retstack_ix = 0;	643	PL_retstack_ix = 0;
600	PL_retstack_max = 4;	644	PL_retstack_max = 4;
601	#endif	645	#endif
602	}	646	}
…		…
604		648
605	/*	649	/*
606	* destroy the stacks, the callchain etc...	650	* destroy the stacks, the callchain etc...
607	*/	651	*/
608	static void	652	static void
609	coro_destroy_stacks (pTHX)	653	coro_destruct_stacks (pTHX)
610	{	654	{
611	while (PL_curstackinfo->si_next)	655	while (PL_curstackinfo->si_next)
612	PL_curstackinfo = PL_curstackinfo->si_next;	656	PL_curstackinfo = PL_curstackinfo->si_next;
613		657
614	while (PL_curstackinfo)	658	while (PL_curstackinfo)
…		…
625		669
626	Safefree (PL_tmps_stack);	670	Safefree (PL_tmps_stack);
627	Safefree (PL_markstack);	671	Safefree (PL_markstack);
628	Safefree (PL_scopestack);	672	Safefree (PL_scopestack);
629	Safefree (PL_savestack);	673	Safefree (PL_savestack);
630	#if !PERL_VERSION_ATLEAST (5,9,0)	674	#if !PERL_VERSION_ATLEAST (5,10,0)
631	Safefree (PL_retstack);	675	Safefree (PL_retstack);
632	#endif	676	#endif
633	}	677	}
634		678
635	static size_t	679	static size_t
…		…
651	#undef VAR	695	#undef VAR
652	}	696	}
653	else	697	else
654	slot = coro->slot;	698	slot = coro->slot;
655		699
		700	if (slot)
		701	{
656	rss += sizeof (slot->curstackinfo);	702	rss += sizeof (slot->curstackinfo);
657	rss += (slot->curstackinfo->si_cxmax + 1) * sizeof (PERL_CONTEXT);	703	rss += (slot->curstackinfo->si_cxmax + 1) * sizeof (PERL_CONTEXT);
658	rss += sizeof (SV) + sizeof (struct xpvav) + (1 + AvMAX (slot->curstack)) * sizeof (SV *);	704	rss += sizeof (SV) + sizeof (struct xpvav) + (1 + AvMAX (slot->curstack)) * sizeof (SV *);
659	rss += slot->tmps_max * sizeof (SV *);	705	rss += slot->tmps_max * sizeof (SV *);
660	rss += (slot->markstack_max - slot->markstack_ptr) * sizeof (I32);	706	rss += (slot->markstack_max - slot->markstack_ptr) * sizeof (I32);
661	rss += slot->scopestack_max * sizeof (I32);	707	rss += slot->scopestack_max * sizeof (I32);
662	rss += slot->savestack_max * sizeof (ANY);	708	rss += slot->savestack_max * sizeof (ANY);
663		709
664	#if !PERL_VERSION_ATLEAST (5,9,0)	710	#if !PERL_VERSION_ATLEAST (5,10,0)
665	rss += slot->retstack_max * sizeof (OP *);	711	rss += slot->retstack_max * sizeof (OP *);
666	#endif	712	#endif
		713	}
667	}	714	}
668		715
669	return rss;	716	return rss;
		717	}
		718
		719	/ set stacklevel support ************************************************/
		720
		721	/* we sometimes need to create the effect of pp_slf calling us */
		722	#define SLF_HEAD (void)0
		723	/* we sometimes need to create the effect of leaving via pp_slf */
		724	#define SLF_TAIL slf_tail (aTHX)
		725
		726	INLINE void
		727	slf_tail (pTHX)
		728	{
		729	dSP;
		730	SV **bot = SP;
		731
		732	int gimme = GIMME_V;
		733
		734	/* make sure we put something on the stack in scalar context */
		735	if (gimme == G_SCALAR)
		736	{
		737	if (sp == bot)
		738	XPUSHs (&PL_sv_undef);
		739
		740	SP = bot + 1;
		741	}
		742
		743	PUTBACK;
670	}	744	}
671		745
672	/ coroutine stack handling **********************************************/	746	/ coroutine stack handling **********************************************/
673		747
674	static int (orig_sigelem_get) (pTHX_ SV sv, MAGIC *mg);	748	static int (orig_sigelem_get) (pTHX_ SV sv, MAGIC *mg);
675	static int (orig_sigelem_set) (pTHX_ SV sv, MAGIC *mg);	749	static int (orig_sigelem_set) (pTHX_ SV sv, MAGIC *mg);
		750	static int (orig_sigelem_clr) (pTHX_ SV sv, MAGIC *mg);
		751
		752	/* apparently < 5.8.8 */
		753	#ifndef MgPV_nolen_const
		754	#define MgPV_nolen_const(mg) (((((int)(mg)->mg_len)) == HEf_SVKEY) ? \
		755	SvPV_nolen((SV*)((mg)->mg_ptr)) : \
		756	(const char*)(mg)->mg_ptr)
		757	#endif
676		758
677	/*	759	/*
678	* This overrides the default magic get method of %SIG elements.	760	* 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	761	* 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	762	* and instead of tryign to save and restore the hash elements, we just provide
…		…
688	{	770	{
689	const char *s = MgPV_nolen_const (mg);	771	const char *s = MgPV_nolen_const (mg);
690		772
691	if (*s == '_')	773	if (*s == '_')
692	{	774	{
693	if (strEQ (s, "__DIE__" ) && PL_diehook ) return sv_setsv (sv, PL_diehook ), 0;	775	SV **svp = 0;
694	if (strEQ (s, "__WARN__") && PL_warnhook) return sv_setsv (sv, PL_warnhook), 0;	776
		777	if (strEQ (s, "__DIE__" )) svp = &PL_diehook;
		778	if (strEQ (s, "__WARN__")) svp = &PL_warnhook;
		779
		780	if (svp)
		781	{
		782	sv_setsv (sv, svp ? svp : &PL_sv_undef);
		783	return 0;
		784	}
695	}	785	}
696		786
697	return orig_sigelem_get ? orig_sigelem_get (aTHX_ sv, mg) : 0;	787	return orig_sigelem_get ? orig_sigelem_get (aTHX_ sv, mg) : 0;
		788	}
		789
		790	static int
		791	coro_sigelem_clr (pTHX_ SV sv, MAGIC mg)
		792	{
		793	const char *s = MgPV_nolen_const (mg);
		794
		795	if (*s == '_')
		796	{
		797	SV **svp = 0;
		798
		799	if (strEQ (s, "__DIE__" )) svp = &PL_diehook;
		800	if (strEQ (s, "__WARN__")) svp = &PL_warnhook;
		801
		802	if (svp)
		803	{
		804	SV old = svp;
		805	*svp = 0;
		806	SvREFCNT_dec (old);
		807	return 0;
		808	}
		809	}
		810
		811	return orig_sigelem_clr ? orig_sigelem_clr (aTHX_ sv, mg) : 0;
698	}	812	}
699		813
700	static int	814	static int
701	coro_sigelem_set (pTHX_ SV sv, MAGIC mg)	815	coro_sigelem_set (pTHX_ SV sv, MAGIC mg)
702	{	816	{
…		…
712	if (svp)	826	if (svp)
713	{	827	{
714	SV old = svp;	828	SV old = svp;
715	*svp = newSVsv (sv);	829	*svp = newSVsv (sv);
716	SvREFCNT_dec (old);	830	SvREFCNT_dec (old);
717	return;	831	return 0;
718	}	832	}
719	}	833	}
720		834
721	return orig_sigelem_set ? orig_sigelem_set (aTHX_ sv, mg) : 0;	835	return orig_sigelem_set ? orig_sigelem_set (aTHX_ sv, mg) : 0;
722	}	836	}
…		…
736	PL_curpm = 0;	850	PL_curpm = 0;
737	PL_curpad = 0;	851	PL_curpad = 0;
738	PL_localizing = 0;	852	PL_localizing = 0;
739	PL_dirty = 0;	853	PL_dirty = 0;
740	PL_restartop = 0;	854	PL_restartop = 0;
		855	#if PERL_VERSION_ATLEAST (5,10,0)
		856	PL_parser = 0;
		857	#endif
741		858
742	/* recreate the die/warn hooks */	859	/* recreate the die/warn hooks */
743	PL_diehook = 0; SvSetMagicSV (*hv_fetch (hv_sig, "__DIE__" , sizeof ("__DIE__" ) - 1, 1), rv_diehook );	860	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);	861	PL_warnhook = 0; SvSetMagicSV (*hv_fetch (hv_sig, "__WARN__", sizeof ("__WARN__") - 1, 1), rv_warnhook);
745		862
746	GvSV (PL_defgv) = newSV (0);	863	GvSV (PL_defgv) = newSV (0);
747	GvAV (PL_defgv) = coro->args; coro->args = 0;	864	GvAV (PL_defgv) = coro->args; coro->args = 0;
748	GvSV (PL_errgv) = newSV (0);	865	GvSV (PL_errgv) = newSV (0);
749	GvSV (irsgv) = newSVpvn ("\n", 1); sv_magic (GvSV (irsgv), (SV *)irsgv, PERL_MAGIC_sv, "/", 0);	866	GvSV (irsgv) = newSVpvn ("\n", 1); sv_magic (GvSV (irsgv), (SV *)irsgv, PERL_MAGIC_sv, "/", 0);
750	PL_rs = newSVsv (GvSV (irsgv));	867	PL_rs = newSVsv (GvSV (irsgv));
751	PL_defoutgv = (GV *)SvREFCNT_inc (stdoutgv);	868	PL_defoutgv = (GV *)SvREFCNT_inc_NN (stdoutgv);
752		869
753	{	870	{
754	dSP;	871	dSP;
755	LOGOP myop;	872	UNOP myop;
756		873
757	Zero (&myop, 1, LOGOP);	874	Zero (&myop, 1, UNOP);
758	myop.op_next = Nullop;	875	myop.op_next = Nullop;
759	myop.op_flags = OPf_WANT_VOID;	876	myop.op_flags = OPf_WANT_VOID;
760		877
761	PUSHMARK (SP);	878	PUSHMARK (SP);
762	XPUSHs (sv_2mortal (av_shift (GvAV (PL_defgv))));	879	XPUSHs (sv_2mortal (av_shift (GvAV (PL_defgv))));
…		…
765	PL_op = PL_ppaddr[OP_ENTERSUB](aTHX);	882	PL_op = PL_ppaddr[OP_ENTERSUB](aTHX);
766	SPAGAIN;	883	SPAGAIN;
767	}	884	}
768		885
769	/* this newly created coroutine might be run on an existing cctx which most	886	/* this newly created coroutine might be run on an existing cctx which most
770	* likely was suspended in set_stacklevel, called from entersub.	887	* likely was suspended in set_stacklevel, called from pp_set_stacklevel,
771	* set_stacklevl doesn't do anything on return, but entersub does LEAVE,	888	* so we have to emulate entering pp_set_stacklevel here.
772	* so we ENTER here for symmetry
773	*/	889	*/
774	ENTER;	890	SLF_HEAD;
775	}	891	}
776		892
777	static void	893	static void
778	coro_destroy (pTHX_ struct coro *coro)	894	coro_destruct (pTHX_ struct coro *coro)
779	{	895	{
780	if (!IN_DESTRUCT)	896	if (!IN_DESTRUCT)
781	{	897	{
782	/* restore all saved variables and stuff */	898	/* restore all saved variables and stuff */
783	LEAVE_SCOPE (0);	899	LEAVE_SCOPE (0);
…		…
805	SvREFCNT_dec (PL_warnhook);	921	SvREFCNT_dec (PL_warnhook);
806		922
807	SvREFCNT_dec (coro->saved_deffh);	923	SvREFCNT_dec (coro->saved_deffh);
808	SvREFCNT_dec (coro->throw);	924	SvREFCNT_dec (coro->throw);
809		925
810	coro_destroy_stacks (aTHX);	926	coro_destruct_stacks (aTHX);
811	}	927	}
812		928
813	static void	929	INLINE void
814	free_coro_mortal (pTHX)	930	free_coro_mortal (pTHX)
815	{	931	{
816	if (expect_true (coro_mortal))	932	if (expect_true (coro_mortal))
817	{	933	{
818	SvREFCNT_dec (coro_mortal);	934	SvREFCNT_dec (coro_mortal);
…		…
852	: cx->blk_gimme == G_SCALAR ? bot + 1	968	: cx->blk_gimme == G_SCALAR ? bot + 1
853	: bot;	969	: bot;
854		970
855	av_extend (av, top - bot);	971	av_extend (av, top - bot);
856	while (bot < top)	972	while (bot < top)
857	av_push (av, SvREFCNT_inc (*bot++));	973	av_push (av, SvREFCNT_inc_NN (*bot++));
858		974
859	PL_runops = RUNOPS_DEFAULT;	975	PL_runops = RUNOPS_DEFAULT;
860	ENTER;	976	ENTER;
861	SAVETMPS;	977	SAVETMPS;
862	EXTEND (SP, 3);	978	EXTEND (SP, 3);
…		…
942		1058
943	TAINT_NOT;	1059	TAINT_NOT;
944	return 0;	1060	return 0;
945	}	1061	}
946		1062
		1063	static void
		1064	prepare_set_stacklevel (struct transfer_args ta, struct coro_cctx cctx)
		1065	{
		1066	ta->prev = (struct coro *)cctx;
		1067	ta->next = 0;
		1068	}
		1069
947	/* inject a fake call to Coro::State::_cctx_init into the execution */	1070	/* 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 */	1071	/* _cctx_init should be careful, as it could be called at almost any time */
949	/* during execution of a perl program */	1072	/* during execution of a perl program */
		1073	/* also initialises PL_top_env */
950	static void NOINLINE	1074	static void NOINLINE
951	cctx_prepare (pTHX_ coro_cctx *cctx)	1075	cctx_prepare (pTHX_ coro_cctx *cctx)
952	{	1076	{
953	dSP;	1077	dSP;
954	LOGOP myop;	1078	UNOP myop;
955		1079
956	PL_top_env = &PL_start_env;	1080	PL_top_env = &PL_start_env;
957		1081
958	if (cctx->flags & CC_TRACE)	1082	if (cctx->flags & CC_TRACE)
959	PL_runops = runops_trace;	1083	PL_runops = runops_trace;
960		1084
961	Zero (&myop, 1, LOGOP);	1085	Zero (&myop, 1, UNOP);
962	myop.op_next = PL_op;	1086	myop.op_next = PL_op;
963	myop.op_flags = OPf_WANT_VOID \| OPf_STACKED;	1087	myop.op_flags = OPf_WANT_VOID \| OPf_STACKED;
964		1088
965	PUSHMARK (SP);	1089	PUSHMARK (SP);
966	EXTEND (SP, 2);	1090	EXTEND (SP, 2);
967	PUSHs (sv_2mortal (newSViv (PTR2IV (cctx))));	1091	PUSHs (sv_2mortal (newSViv ((IV)cctx)));
968	PUSHs ((SV *)get_cv ("Coro::State::_cctx_init", FALSE));	1092	PUSHs ((SV *)get_cv ("Coro::State::_cctx_init", FALSE));
969	PUTBACK;	1093	PUTBACK;
970	PL_op = (OP *)&myop;	1094	PL_op = (OP *)&myop;
971	PL_op = PL_ppaddr[OP_ENTERSUB](aTHX);	1095	PL_op = PL_ppaddr[OP_ENTERSUB](aTHX);
972	SPAGAIN;	1096	SPAGAIN;
973	}	1097	}
974		1098
		1099	/* the tail of transfer: execute stuff we can only do after a transfer */
		1100	INLINE void
		1101	transfer_tail (pTHX)
		1102	{
		1103	struct coro next = (struct coro )transfer_next;
		1104	assert (!(transfer_next = 0)); /* just used for the side effect when asserts are enabled */
		1105	assert (("FATAL: next coroutine was zero in transfer_tail (please report)", next));
		1106
		1107	free_coro_mortal (aTHX);
		1108	UNLOCK;
		1109
		1110	if (expect_false (next->throw))
		1111	{
		1112	SV *exception = sv_2mortal (next->throw);
		1113
		1114	next->throw = 0;
		1115	sv_setsv (ERRSV, exception);
		1116	croak (0);
		1117	}
		1118	}
		1119
975	/*	1120	/*
976	* this is a _very_ stripped down perl interpreter ;)	1121	* this is a _very_ stripped down perl interpreter ;)
977	*/	1122	*/
978	static void	1123	static void
979	cctx_run (void *arg)	1124	cctx_run (void *arg)
980	{	1125	{
		1126	#ifdef USE_ITHREADS
		1127	# if CORO_PTHREAD
		1128	PERL_SET_CONTEXT (coro_thx);
		1129	# endif
		1130	#endif
		1131	{
981	dTHX;	1132	dTHX;
982		1133
983	/* cctx_run is the alternative tail of transfer(), so unlock here. */	1134	/* we are the alternative tail to pp_set_stacklevel */
984	UNLOCK;	1135	/* so do the same things here */
		1136	SLF_TAIL;
985		1137
986	/* we now skip the entersub that lead to transfer() */	1138	/* we now skip the op that did lead to transfer() */
987	PL_op = PL_op->op_next;	1139	PL_op = PL_op->op_next;
988		1140
989	/* inject a fake subroutine call to cctx_init */	1141	/* inject a fake subroutine call to cctx_init */
990	cctx_prepare (aTHX_ (coro_cctx *)arg);	1142	cctx_prepare (aTHX_ (coro_cctx *)arg);
991		1143
		1144	/* cctx_run is the alternative tail of transfer() */
		1145	transfer_tail (aTHX);
		1146
992	/* somebody or something will hit me for both perl_run and PL_restartop */	1147	/* somebody or something will hit me for both perl_run and PL_restartop */
993	PL_restartop = PL_op;	1148	PL_restartop = PL_op;
994	perl_run (PL_curinterp);	1149	perl_run (PL_curinterp);
995		1150
996	/*	1151	/*
997	* If perl-run returns we assume exit() was being called or the coro	1152	* 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)	1153	* 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	1154	* 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"	1155	* bootstrap-time "top" top_env, as we cannot restore the "main"
1001	* coroutine as Coro has no such concept	1156	* coroutine as Coro has no such concept
1002	*/	1157	*/
1003	PL_top_env = main_top_env;	1158	PL_top_env = main_top_env;
1004	JMPENV_JUMP (2); /* I do not feel well about the hardcoded 2 at all */	1159	JMPENV_JUMP (2); /* I do not feel well about the hardcoded 2 at all */
		1160	}
1005	}	1161	}
1006		1162
1007	static coro_cctx *	1163	static coro_cctx *
1008	cctx_new ()	1164	cctx_new ()
1009	{	1165	{
1010	coro_cctx *cctx;	1166	coro_cctx *cctx;
		1167
		1168	++cctx_count;
		1169	New (0, cctx, 1, coro_cctx);
		1170
		1171	cctx->gen = cctx_gen;
		1172	cctx->flags = 0;
		1173	cctx->idle_sp = 0; /* can be accessed by transfer between cctx_run and set_stacklevel, on throw */
		1174
		1175	return cctx;
		1176	}
		1177
		1178	/* create a new cctx only suitable as source */
		1179	static coro_cctx *
		1180	cctx_new_empty ()
		1181	{
		1182	coro_cctx *cctx = cctx_new ();
		1183
		1184	cctx->sptr = 0;
		1185	coro_create (&cctx->cctx, 0, 0, 0, 0);
		1186
		1187	return cctx;
		1188	}
		1189
		1190	/* create a new cctx suitable as destination/running a perl interpreter */
		1191	static coro_cctx *
		1192	cctx_new_run ()
		1193	{
		1194	coro_cctx *cctx = cctx_new ();
1011	void *stack_start;	1195	void *stack_start;
1012	size_t stack_size;	1196	size_t stack_size;
1013		1197
1014	++cctx_count;
1015
1016	Newz (0, cctx, 1, coro_cctx);
1017
1018	#if HAVE_MMAP	1198	#if HAVE_MMAP
1019	cctx->ssize = ((coro_stacksize * sizeof (long) + PAGESIZE - 1) / PAGESIZE + CORO_STACKGUARD) * PAGESIZE;	1199	cctx->ssize = ((cctx_stacksize * sizeof (long) + PAGESIZE - 1) / PAGESIZE + CORO_STACKGUARD) * PAGESIZE;
1020	/* mmap supposedly does allocate-on-write for us */	1200	/* 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);	1201	cctx->sptr = mmap (0, cctx->ssize, PROT_EXEC\|PROT_READ\|PROT_WRITE, MAP_PRIVATE\|MAP_ANONYMOUS, 0, 0);
1022		1202
1023	if (cctx->sptr != (void *)-1)	1203	if (cctx->sptr != (void *)-1)
1024	{	1204	{
1025	# if CORO_STACKGUARD	1205	#if CORO_STACKGUARD
1026	mprotect (cctx->sptr, CORO_STACKGUARD * PAGESIZE, PROT_NONE);	1206	mprotect (cctx->sptr, CORO_STACKGUARD * PAGESIZE, PROT_NONE);
1027	# endif	1207	#endif
1028	stack_start = CORO_STACKGUARD * PAGESIZE + (char *)cctx->sptr;	1208	stack_start = (char )cctx->sptr + CORO_STACKGUARD PAGESIZE;
1029	stack_size = cctx->ssize - CORO_STACKGUARD * PAGESIZE;	1209	stack_size = cctx->ssize - CORO_STACKGUARD * PAGESIZE;
1030	cctx->flags \|= CC_MAPPED;	1210	cctx->flags \|= CC_MAPPED;
1031	}	1211	}
1032	else	1212	else
1033	#endif	1213	#endif
1034	{	1214	{
1035	cctx->ssize = coro_stacksize * (long)sizeof (long);	1215	cctx->ssize = cctx_stacksize * (long)sizeof (long);
1036	New (0, cctx->sptr, coro_stacksize, long);	1216	New (0, cctx->sptr, cctx_stacksize, long);
1037		1217
1038	if (!cctx->sptr)	1218	if (!cctx->sptr)
1039	{	1219	{
1040	perror ("FATAL: unable to allocate stack for coroutine");	1220	perror ("FATAL: unable to allocate stack for coroutine, exiting.");
1041	_exit (EXIT_FAILURE);	1221	_exit (EXIT_FAILURE);
1042	}	1222	}
1043		1223
1044	stack_start = cctx->sptr;	1224	stack_start = cctx->sptr;
1045	stack_size = cctx->ssize;	1225	stack_size = cctx->ssize;
1046	}	1226	}
1047		1227
1048	REGISTER_STACK (cctx, (char )stack_start, (char )stack_start + stack_size);	1228	#if CORO_USE_VALGRIND
		1229	cctx->valgrind_id = VALGRIND_STACK_REGISTER ((char )stack_start, (char )stack_start + stack_size);
		1230	#endif
		1231
1049	coro_create (&cctx->cctx, cctx_run, (void *)cctx, stack_start, stack_size);	1232	coro_create (&cctx->cctx, cctx_run, (void *)cctx, stack_start, stack_size);
1050		1233
1051	return cctx;	1234	return cctx;
1052	}	1235	}
1053		1236
…		…
1056	{	1239	{
1057	if (!cctx)	1240	if (!cctx)
1058	return;	1241	return;
1059		1242
1060	--cctx_count;	1243	--cctx_count;
		1244	coro_destroy (&cctx->cctx);
1061		1245
		1246	/* coro_transfer creates new, empty cctx's */
		1247	if (cctx->sptr)
		1248	{
1062	#if CORO_USE_VALGRIND	1249	#if CORO_USE_VALGRIND
1063	VALGRIND_STACK_DEREGISTER (cctx->valgrind_id);	1250	VALGRIND_STACK_DEREGISTER (cctx->valgrind_id);
1064	#endif	1251	#endif
1065		1252
1066	#if HAVE_MMAP	1253	#if HAVE_MMAP
1067	if (cctx->flags & CC_MAPPED)	1254	if (cctx->flags & CC_MAPPED)
1068	munmap (cctx->sptr, cctx->ssize);	1255	munmap (cctx->sptr, cctx->ssize);
1069	else	1256	else
1070	#endif	1257	#endif
1071	Safefree (cctx->sptr);	1258	Safefree (cctx->sptr);
		1259	}
1072		1260
1073	Safefree (cctx);	1261	Safefree (cctx);
1074	}	1262	}
1075		1263
1076	/* wether this cctx should be destructed */	1264	/* wether this cctx should be destructed */
1077	#define CCTX_EXPIRED(cctx) ((cctx)->ssize < coro_stacksize \|\| ((cctx)->flags & CC_NOREUSE))	1265	#define CCTX_EXPIRED(cctx) ((cctx)->gen != cctx_gen \|\| ((cctx)->flags & CC_NOREUSE))
1078		1266
1079	static coro_cctx *	1267	static coro_cctx *
1080	cctx_get (pTHX)	1268	cctx_get (pTHX)
1081	{	1269	{
1082	while (expect_true (cctx_first))	1270	while (expect_true (cctx_first))
…		…
1089	return cctx;	1277	return cctx;
1090		1278
1091	cctx_destroy (cctx);	1279	cctx_destroy (cctx);
1092	}	1280	}
1093		1281
1094	return cctx_new ();	1282	return cctx_new_run ();
1095	}	1283	}
1096		1284
1097	static void	1285	static void
1098	cctx_put (coro_cctx *cctx)	1286	cctx_put (coro_cctx *cctx)
1099	{	1287	{
		1288	assert (("FATAL: cctx_put called on non-initialised cctx in Coro (please report)", cctx->sptr));
		1289
1100	/* free another cctx if overlimit */	1290	/* free another cctx if overlimit */
1101	if (expect_false (cctx_idle >= MAX_IDLE_CCTX))	1291	if (expect_false (cctx_idle >= cctx_max_idle))
1102	{	1292	{
1103	coro_cctx *first = cctx_first;	1293	coro_cctx *first = cctx_first;
1104	cctx_first = first->next;	1294	cctx_first = first->next;
1105	--cctx_idle;	1295	--cctx_idle;
1106		1296
…		…
1126	croak ("Coro::State::transfer called with running next Coro::State, but can only transfer to inactive states");	1316	croak ("Coro::State::transfer called with running next Coro::State, but can only transfer to inactive states");
1127		1317
1128	if (expect_false (next->flags & CF_DESTROYED))	1318	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");	1319	croak ("Coro::State::transfer called with destroyed next Coro::State, but can only transfer to inactive states");
1130		1320
1131	if (
1132	#if PERL_VERSION_ATLEAST (5,9,0)	1321	#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)	1322	if (expect_false (PL_lex_state != LEX_NOTPARSING))
1136	#endif
1137	)
1138	croak ("Coro::State::transfer called while parsing, but this is not supported");	1323	croak ("Coro::State::transfer called while parsing, but this is not supported in your perl version");
		1324	#endif
1139	}	1325	}
1140	}	1326	}
1141		1327
1142	/* always use the TRANSFER macro */	1328	/* always use the TRANSFER macro */
1143	static void NOINLINE	1329	static void NOINLINE
1144	transfer (pTHX_ struct coro prev, struct coro next)	1330	transfer (pTHX_ struct coro prev, struct coro next, int force_cctx)
1145	{	1331	{
1146	dSTACKLEVEL;	1332	dSTACKLEVEL;
1147	static volatile int has_throw;
1148		1333
1149	/* sometimes transfer is only called to set idle_sp */	1334	/* sometimes transfer is only called to set idle_sp */
1150	if (expect_false (!next))	1335	if (expect_false (!next))
1151	{	1336	{
1152	((coro_cctx *)prev)->idle_sp = STACKLEVEL;	1337	((coro_cctx *)prev)->idle_sp = stacklevel;
1153	assert (((coro_cctx )prev)->idle_te = PL_top_env); / just for the side-effect when asserts are enabled */	1338	assert (((coro_cctx )prev)->idle_te = PL_top_env); / just for the side-effect when asserts are enabled */
1154	}	1339	}
1155	else if (expect_true (prev != next))	1340	else if (expect_true (prev != next))
1156	{	1341	{
1157	coro_cctx *prev__cctx;	1342	coro_cctx *prev__cctx;
1158		1343
1159	if (expect_false (prev->flags & CF_NEW))	1344	if (expect_false (prev->flags & CF_NEW))
1160	{	1345	{
1161	/* create a new empty context */	1346	/* create a new empty/source context */
1162	Newz (0, prev->cctx, 1, coro_cctx);	1347	prev->cctx = cctx_new_empty ();
1163	prev->flags &= ~CF_NEW;	1348	prev->flags &= ~CF_NEW;
1164	prev->flags \|= CF_RUNNING;	1349	prev->flags \|= CF_RUNNING;
1165	}	1350	}
1166		1351
1167	prev->flags &= ~CF_RUNNING;	1352	prev->flags &= ~CF_RUNNING;
…		…
1182	else	1367	else
1183	load_perl (aTHX_ next);	1368	load_perl (aTHX_ next);
1184		1369
1185	prev__cctx = prev->cctx;	1370	prev__cctx = prev->cctx;
1186		1371
1187	/* possibly "free" the cctx */	1372	/* possibly untie and reuse the cctx */
1188	if (expect_true (prev__cctx->idle_sp == STACKLEVEL && !(prev__cctx->flags & CC_TRACE)))	1373	if (expect_true (
		1374	prev__cctx->idle_sp == stacklevel
		1375	&& !(prev__cctx->flags & CC_TRACE)
		1376	&& !force_cctx
		1377	))
1189	{	1378	{
1190	/* I assume that STACKLEVEL is a stronger indicator than PL_top_env changes */	1379	/* I assume that stacklevel is a stronger indicator than PL_top_env changes */
1191	assert (("ERROR: current top_env must equal previous top_env", PL_top_env == prev__cctx->idle_te));	1380	assert (("FATAL: current top_env must equal previous top_env in Coro (please report)", PL_top_env == prev__cctx->idle_te));
1192		1381
1193	prev->cctx = 0;	1382	prev->cctx = 0;
1194		1383
1195	/* if the cctx is about to be destroyed we need to make sure we won't see it in cctx_get */	1384	/* if the cctx is about to be destroyed we need to make sure we won't see it in cctx_get */
1196	/* without this the next cctx_get might destroy the prev__cctx while still in use */	1385	/* without this the next cctx_get might destroy the prev__cctx while still in use */
…		…
1204	++next->usecount;	1393	++next->usecount;
1205		1394
1206	if (expect_true (!next->cctx))	1395	if (expect_true (!next->cctx))
1207	next->cctx = cctx_get (aTHX);	1396	next->cctx = cctx_get (aTHX);
1208		1397
1209	has_throw = !!next->throw;	1398	assert (("FATAL: transfer_next already nonzero in Coro (please report)", !transfer_next));
		1399	transfer_next = next;
1210		1400
1211	if (expect_false (prev__cctx != next->cctx))	1401	if (expect_false (prev__cctx != next->cctx))
1212	{	1402	{
1213	prev__cctx->top_env = PL_top_env;	1403	prev__cctx->top_env = PL_top_env;
1214	PL_top_env = next->cctx->top_env;	1404	PL_top_env = next->cctx->top_env;
1215	coro_transfer (&prev__cctx->cctx, &next->cctx->cctx);	1405	coro_transfer (&prev__cctx->cctx, &next->cctx->cctx);
1216	}	1406	}
1217		1407
1218	free_coro_mortal (aTHX);	1408	transfer_tail (aTHX);
1219	UNLOCK;
1220
1221	if (expect_false (has_throw))
1222	{
1223	struct coro *coro = SvSTATE (coro_current);
1224
1225	if (coro->throw)
1226	{
1227	SV *exception = coro->throw;
1228	coro->throw = 0;
1229	sv_setsv (ERRSV, exception);
1230	croak (0);
1231	}
1232	}
1233	}	1409	}
1234	}	1410	}
1235		1411
1236	struct transfer_args
1237	{
1238	struct coro prev, next;
1239	};
1240
1241	#define TRANSFER(ta) transfer (aTHX_ (ta).prev, (ta).next)	1412	#define TRANSFER(ta, force_cctx) transfer (aTHX_ (ta).prev, (ta).next, (force_cctx))
1242	#define TRANSFER_CHECK(ta) transfer_check (aTHX_ (ta).prev, (ta).next)	1413	#define TRANSFER_CHECK(ta) transfer_check (aTHX_ (ta).prev, (ta).next)
1243		1414
1244	/ high level stuff ******************************************************/	1415	/ high level stuff ******************************************************/
1245		1416
1246	static int	1417	static int
…		…
1270	croak ("FATAL: tried to destroy currently running coroutine");	1441	croak ("FATAL: tried to destroy currently running coroutine");
1271		1442
1272	save_perl (aTHX_ &temp);	1443	save_perl (aTHX_ &temp);
1273	load_perl (aTHX_ coro);	1444	load_perl (aTHX_ coro);
1274		1445
1275	coro_destroy (aTHX_ coro);	1446	coro_destruct (aTHX_ coro);
1276		1447
1277	load_perl (aTHX_ &temp);	1448	load_perl (aTHX_ &temp);
1278		1449
1279	coro->slot = 0;	1450	coro->slot = 0;
1280	}	1451	}
…		…
1340	{	1511	{
1341	dTHX;	1512	dTHX;
1342	struct transfer_args ta;	1513	struct transfer_args ta;
1343		1514
1344	prepare_transfer (aTHX_ &ta, prev_sv, next_sv);	1515	prepare_transfer (aTHX_ &ta, prev_sv, next_sv);
1345	TRANSFER (ta);	1516	TRANSFER (ta, 1);
1346	}	1517	}
1347		1518
1348	/ Coro ******************************************************************/	1519	/ Coro ******************************************************************/
1349		1520
1350	static void	1521	static void
…		…
1368	static int	1539	static int
1369	api_ready (SV *coro_sv)	1540	api_ready (SV *coro_sv)
1370	{	1541	{
1371	dTHX;	1542	dTHX;
1372	struct coro *coro;	1543	struct coro *coro;
		1544	SV *sv_hook;
		1545	void (*xs_hook)(void);
1373		1546
1374	if (SvROK (coro_sv))	1547	if (SvROK (coro_sv))
1375	coro_sv = SvRV (coro_sv);	1548	coro_sv = SvRV (coro_sv);
1376		1549
1377	coro = SvSTATE (coro_sv);	1550	coro = SvSTATE (coro_sv);
…		…
1380	return 0;	1553	return 0;
1381		1554
1382	coro->flags \|= CF_READY;	1555	coro->flags \|= CF_READY;
1383		1556
1384	LOCK;	1557	LOCK;
		1558
		1559	sv_hook = coro_nready ? 0 : coro_readyhook;
		1560	xs_hook = coro_nready ? 0 : coroapi.readyhook;
		1561
1385	coro_enq (aTHX_ SvREFCNT_inc (coro_sv));	1562	coro_enq (aTHX_ SvREFCNT_inc_NN (coro_sv));
1386	++coro_nready;	1563	++coro_nready;
		1564
1387	UNLOCK;	1565	UNLOCK;
		1566
		1567	if (sv_hook)
		1568	{
		1569	dSP;
		1570
		1571	ENTER;
		1572	SAVETMPS;
		1573
		1574	PUSHMARK (SP);
		1575	PUTBACK;
		1576	call_sv (sv_hook, G_DISCARD);
		1577	SPAGAIN;
		1578
		1579	FREETMPS;
		1580	LEAVE;
		1581	}
		1582
		1583	if (xs_hook)
		1584	xs_hook ();
1388		1585
1389	return 1;	1586	return 1;
1390	}	1587	}
1391		1588
1392	static int	1589	static int
1393	api_is_ready (SV *coro_sv)	1590	api_is_ready (SV *coro_sv)
1394	{	1591	{
1395	dTHX;	1592	dTHX;
		1593
1396	return !!(SvSTATE (coro_sv)->flags & CF_READY);	1594	return !!(SvSTATE (coro_sv)->flags & CF_READY);
1397	}	1595	}
1398		1596
1399	static void	1597	INLINE void
1400	prepare_schedule (pTHX_ struct transfer_args *ta)	1598	prepare_schedule (pTHX_ struct transfer_args *ta)
1401	{	1599	{
1402	SV prev_sv, next_sv;	1600	SV prev_sv, next_sv;
1403		1601
1404	for (;;)	1602	for (;;)
…		…
1430	/* cannot transfer to destroyed coros, skip and look for next */	1628	/* cannot transfer to destroyed coros, skip and look for next */
1431	if (expect_false (ta->next->flags & CF_DESTROYED))	1629	if (expect_false (ta->next->flags & CF_DESTROYED))
1432	{	1630	{
1433	UNLOCK;	1631	UNLOCK;
1434	SvREFCNT_dec (next_sv);	1632	SvREFCNT_dec (next_sv);
1435	/* coro_nready is already taken care of by destroy */	1633	/* coro_nready has already been taken care of by destroy */
1436	continue;	1634	continue;
1437	}	1635	}
1438		1636
1439	--coro_nready;	1637	--coro_nready;
1440	UNLOCK;	1638	UNLOCK;
…		…
1443		1641
1444	/* free this only after the transfer */	1642	/* free this only after the transfer */
1445	prev_sv = SvRV (coro_current);	1643	prev_sv = SvRV (coro_current);
1446	ta->prev = SvSTATE (prev_sv);	1644	ta->prev = SvSTATE (prev_sv);
1447	TRANSFER_CHECK (*ta);	1645	TRANSFER_CHECK (*ta);
1448	assert (ta->next->flags & CF_READY);	1646	assert (("FATAL: next coroutine isn't marked as ready in Coro (please report)", ta->next->flags & CF_READY));
1449	ta->next->flags &= ~CF_READY;	1647	ta->next->flags &= ~CF_READY;
1450	SvRV_set (coro_current, next_sv);	1648	SvRV_set (coro_current, next_sv);
1451		1649
1452	LOCK;	1650	LOCK;
1453	free_coro_mortal (aTHX);	1651	free_coro_mortal (aTHX);
1454	coro_mortal = prev_sv;	1652	coro_mortal = prev_sv;
1455	UNLOCK;	1653	UNLOCK;
1456	}	1654	}
1457		1655
1458	static void	1656	INLINE void
1459	prepare_cede (pTHX_ struct transfer_args *ta)	1657	prepare_cede (pTHX_ struct transfer_args *ta)
1460	{	1658	{
1461	api_ready (coro_current);	1659	api_ready (coro_current);
1462	prepare_schedule (aTHX_ ta);	1660	prepare_schedule (aTHX_ ta);
1463	}	1661	}
1464		1662
1465	static int	1663	static void
1466	prepare_cede_notself (pTHX_ struct transfer_args *ta)	1664	prepare_cede_notself (pTHX_ struct transfer_args *ta)
1467	{	1665	{
		1666	SV *prev = SvRV (coro_current);
		1667
1468	if (coro_nready)	1668	if (coro_nready)
1469	{	1669	{
1470	SV *prev = SvRV (coro_current);
1471	prepare_schedule (aTHX_ ta);	1670	prepare_schedule (aTHX_ ta);
1472	api_ready (prev);	1671	api_ready (prev);
		1672	}
		1673	else
		1674	ta->prev = ta->next = SvSTATE (prev);
		1675	}
		1676
		1677	static void
		1678	api_schedule (void)
		1679	{
		1680	dTHX;
		1681	struct transfer_args ta;
		1682
		1683	prepare_schedule (aTHX_ &ta);
		1684	TRANSFER (ta, 1);
		1685	}
		1686
		1687	static int
		1688	api_cede (void)
		1689	{
		1690	dTHX;
		1691	struct transfer_args ta;
		1692
		1693	prepare_cede (aTHX_ &ta);
		1694
		1695	if (expect_true (ta.prev != ta.next))
		1696	{
		1697	TRANSFER (ta, 1);
1473	return 1;	1698	return 1;
1474	}	1699	}
1475	else	1700	else
1476	return 0;	1701	return 0;
1477	}	1702	}
1478		1703
1479	static void
1480	api_schedule (void)
1481	{
1482	dTHX;
1483	struct transfer_args ta;
1484
1485	prepare_schedule (aTHX_ &ta);
1486	TRANSFER (ta);
1487	}
1488
1489	static int	1704	static int
1490	api_cede (void)	1705	api_cede_notself (void)
1491	{	1706	{
		1707	if (coro_nready)
		1708	{
1492	dTHX;	1709	dTHX;
1493	struct transfer_args ta;	1710	struct transfer_args ta;
1494		1711
1495	prepare_cede (aTHX_ &ta);	1712	prepare_cede_notself (aTHX_ &ta);
1496
1497	if (expect_true (ta.prev != ta.next))
1498	{
1499	TRANSFER (ta);	1713	TRANSFER (ta, 1);
1500	return 1;	1714	return 1;
1501	}	1715	}
1502	else	1716	else
1503	return 0;	1717	return 0;
1504	}	1718	}
1505		1719
1506	static int
1507	api_cede_notself (void)
1508	{
1509	dTHX;
1510	struct transfer_args ta;
1511
1512	if (prepare_cede_notself (aTHX_ &ta))
1513	{
1514	TRANSFER (ta);
1515	return 1;
1516	}
1517	else
1518	return 0;
1519	}
1520
1521	static void	1720	static void
1522	api_trace (SV *coro_sv, int flags)	1721	api_trace (SV *coro_sv, int flags)
1523	{	1722	{
1524	dTHX;	1723	dTHX;
1525	struct coro *coro = SvSTATE (coro_sv);	1724	struct coro *coro = SvSTATE (coro_sv);
1526		1725
1527	if (flags & CC_TRACE)	1726	if (flags & CC_TRACE)
1528	{	1727	{
1529	if (!coro->cctx)	1728	if (!coro->cctx)
1530	coro->cctx = cctx_new ();	1729	coro->cctx = cctx_new_run ();
1531	else if (!(coro->cctx->flags & CC_TRACE))	1730	else if (!(coro->cctx->flags & CC_TRACE))
1532	croak ("cannot enable tracing on coroutine with custom stack");	1731	croak ("cannot enable tracing on coroutine with custom stack");
1533		1732
1534	coro->cctx->flags \|= CC_NOREUSE \| (flags & (CC_TRACE \| CC_TRACE_ALL));	1733	coro->cctx->flags \|= CC_NOREUSE \| (flags & (CC_TRACE \| CC_TRACE_ALL));
1535	}	1734	}
…		…
1542	else	1741	else
1543	coro->slot->runops = RUNOPS_DEFAULT;	1742	coro->slot->runops = RUNOPS_DEFAULT;
1544	}	1743	}
1545	}	1744	}
1546		1745
		1746	#if 0
		1747	static int
		1748	coro_gensub_free (pTHX_ SV sv, MAGIC mg)
		1749	{
		1750	AV *padlist;
		1751	AV av = (AV )mg->mg_obj;
		1752
		1753	abort ();
		1754
		1755	return 0;
		1756	}
		1757
		1758	static MGVTBL coro_gensub_vtbl = {
		1759	0, 0, 0, 0,
		1760	coro_gensub_free
		1761	};
		1762	#endif
		1763
		1764	/*****************************************************************************/
		1765	/* PerlIO::cede */
		1766
		1767	typedef struct
		1768	{
		1769	PerlIOBuf base;
		1770	NV next, every;
		1771	} PerlIOCede;
		1772
		1773	static IV
		1774	PerlIOCede_pushed (pTHX_ PerlIO f, const char mode, SV arg, PerlIO_funcs tab)
		1775	{
		1776	PerlIOCede *self = PerlIOSelf (f, PerlIOCede);
		1777
		1778	self->every = SvCUR (arg) ? SvNV (arg) : 0.01;
		1779	self->next = nvtime () + self->every;
		1780
		1781	return PerlIOBuf_pushed (aTHX_ f, mode, Nullsv, tab);
		1782	}
		1783
		1784	static SV *
		1785	PerlIOCede_getarg (pTHX_ PerlIO f, CLONE_PARAMS param, int flags)
		1786	{
		1787	PerlIOCede *self = PerlIOSelf (f, PerlIOCede);
		1788
		1789	return newSVnv (self->every);
		1790	}
		1791
		1792	static IV
		1793	PerlIOCede_flush (pTHX_ PerlIO *f)
		1794	{
		1795	PerlIOCede *self = PerlIOSelf (f, PerlIOCede);
		1796	double now = nvtime ();
		1797
		1798	if (now >= self->next)
		1799	{
		1800	api_cede ();
		1801	self->next = now + self->every;
		1802	}
		1803
		1804	return PerlIOBuf_flush (aTHX_ f);
		1805	}
		1806
		1807	static PerlIO_funcs PerlIO_cede =
		1808	{
		1809	sizeof(PerlIO_funcs),
		1810	"cede",
		1811	sizeof(PerlIOCede),
		1812	PERLIO_K_DESTRUCT \| PERLIO_K_RAW,
		1813	PerlIOCede_pushed,
		1814	PerlIOBuf_popped,
		1815	PerlIOBuf_open,
		1816	PerlIOBase_binmode,
		1817	PerlIOCede_getarg,
		1818	PerlIOBase_fileno,
		1819	PerlIOBuf_dup,
		1820	PerlIOBuf_read,
		1821	PerlIOBuf_unread,
		1822	PerlIOBuf_write,
		1823	PerlIOBuf_seek,
		1824	PerlIOBuf_tell,
		1825	PerlIOBuf_close,
		1826	PerlIOCede_flush,
		1827	PerlIOBuf_fill,
		1828	PerlIOBase_eof,
		1829	PerlIOBase_error,
		1830	PerlIOBase_clearerr,
		1831	PerlIOBase_setlinebuf,
		1832	PerlIOBuf_get_base,
		1833	PerlIOBuf_bufsiz,
		1834	PerlIOBuf_get_ptr,
		1835	PerlIOBuf_get_cnt,
		1836	PerlIOBuf_set_ptrcnt,
		1837	};
		1838
		1839	/*****************************************************************************/
		1840
		1841	static const CV slf_cv; / for quick consistency check */
		1842
		1843	static UNOP slf_restore; /* restore stack as entersub did, for first-re-run */
		1844	static SV *slf_arg0;
		1845	static SV *slf_arg1;
		1846
		1847	/* this restores the stack in the case we patched the entersub, to */
		1848	/* recreate the stack frame as perl will on following calls */
		1849	/* since entersub cleared the stack */
		1850	static OP *
		1851	pp_restore (pTHX)
		1852	{
		1853	dSP;
		1854
		1855	PUSHMARK (SP);
		1856
		1857	EXTEND (SP, 3);
		1858	if (slf_arg0) PUSHs (sv_2mortal (slf_arg0));
		1859	if (slf_arg1) PUSHs (sv_2mortal (slf_arg1));
		1860	PUSHs ((SV *)CvGV (slf_cv));
		1861
		1862	RETURNOP (slf_restore.op_first);
		1863	}
		1864
		1865	#define OPpENTERSUB_SLF 15 /* the part of op_private entersub hopefully doesn't use */
		1866
		1867	/* declare prototype */
		1868	XS(XS_Coro__State__set_stacklevel);
		1869
		1870	/*
		1871	* these not obviously related functions are all rolled into one
		1872	* function to increase chances that they all will call transfer with the same
		1873	* stack offset
		1874	* SLF stands for "schedule-like-function".
		1875	*/
		1876	static OP *
		1877	pp_slf (pTHX)
		1878	{
		1879	dSP;
		1880	struct transfer_args ta;
		1881	SV **arg = PL_stack_base + TOPMARK + 1;
		1882	int items = SP - arg; /* args without function object */
		1883
		1884	/* do a quick consistency check on the "function" object, and if it isn't */
		1885	/* for us, divert to the real entersub */
		1886	if (SvTYPE (sp) != SVt_PVGV \|\| CvXSUB (GvCV (sp)) != XS_Coro__State__set_stacklevel)
		1887	return PL_ppaddr[OP_ENTERSUB](aTHX);
		1888
		1889	/* pop args */
		1890	SP = PL_stack_base + POPMARK;
		1891
		1892	if (!(PL_op->op_flags & OPf_STACKED))
		1893	{
		1894	/* ampersand-form of call, use @_ instead of stack */
		1895	AV *av = GvAV (PL_defgv);
		1896	arg = AvARRAY (av);
		1897	items = AvFILLp (av) + 1;
		1898	}
		1899
		1900	PUTBACK;
		1901	switch (PL_op->op_private & OPpENTERSUB_SLF)
		1902	{
		1903	case 0:
		1904	prepare_set_stacklevel (&ta, (struct coro_cctx *)SvIV (arg [0]));
		1905	break;
		1906
		1907	case 1:
		1908	if (items != 2)
		1909	croak ("Coro::State::transfer (prev, next) expects two arguments, not %d.", items);
		1910
		1911	prepare_transfer (aTHX_ &ta, arg [0], arg [1]);
		1912	break;
		1913
		1914	case 2:
		1915	prepare_schedule (aTHX_ &ta);
		1916	break;
		1917
		1918	case 3:
		1919	prepare_cede (aTHX_ &ta);
		1920	break;
		1921
		1922	case 4:
		1923	prepare_cede_notself (aTHX_ &ta);
		1924	break;
		1925
		1926	case 5:
		1927	abort ();
		1928
		1929	default:
		1930	abort ();
		1931	}
		1932
		1933	TRANSFER (ta, 0);
		1934	SPAGAIN;
		1935
		1936	PUTBACK;
		1937	SLF_TAIL;
		1938	SPAGAIN;
		1939	RETURN;
		1940	}
		1941
		1942	static void
		1943	coro_slf_patch (pTHX_ CV cv, int ix, SV *args, int items)
		1944	{
		1945	assert (("FATAL: SLF call recursion in Coro module (please report)", PL_op->op_ppaddr != pp_slf));
		1946
		1947	assert (("FATAL: SLF call with illegal CV value", CvGV (cv)));
		1948	slf_cv = cv;
		1949
		1950	/* we patch the op, and then re-run the whole call */
		1951	/* we have to put the same argument on the stack for this to work */
		1952	/* and this will be done by pp_restore */
		1953	slf_restore.op_next = (OP *)&slf_restore;
		1954	slf_restore.op_type = OP_NULL;
		1955	slf_restore.op_ppaddr = pp_restore;
		1956	slf_restore.op_first = PL_op;
		1957
		1958	slf_arg0 = items > 0 ? SvREFCNT_inc (args [0]) : 0;
		1959	slf_arg1 = items > 1 ? SvREFCNT_inc (args [1]) : 0;
		1960
		1961	PL_op->op_ppaddr = pp_slf;
		1962	PL_op->op_private = PL_op->op_private & ~OPpENTERSUB_SLF \| ix; /* we potentially share our private flags with entersub */
		1963
		1964	PL_op = (OP *)&slf_restore;
		1965	}
		1966
1547	MODULE = Coro::State PACKAGE = Coro::State PREFIX = api_	1967	MODULE = Coro::State PACKAGE = Coro::State PREFIX = api_
1548		1968
1549	PROTOTYPES: DISABLE	1969	PROTOTYPES: DISABLE
1550		1970
1551	BOOT:	1971	BOOT:
1552	{	1972	{
1553	#ifdef USE_ITHREADS	1973	#ifdef USE_ITHREADS
1554	MUTEX_INIT (&coro_mutex);	1974	MUTEX_INIT (&coro_lock);
		1975	# if CORO_PTHREAD
		1976	coro_thx = PERL_GET_CONTEXT;
		1977	# endif
1555	#endif	1978	#endif
1556	BOOT_PAGESIZE;	1979	BOOT_PAGESIZE;
1557		1980
1558	irsgv = gv_fetchpv ("/" , GV_ADD\|GV_NOTQUAL, SVt_PV);	1981	irsgv = gv_fetchpv ("/" , GV_ADD\|GV_NOTQUAL, SVt_PV);
1559	stdoutgv = gv_fetchpv ("STDOUT", GV_ADD\|GV_NOTQUAL, SVt_PVIO);	1982	stdoutgv = gv_fetchpv ("STDOUT", GV_ADD\|GV_NOTQUAL, SVt_PVIO);
1560		1983
1561	orig_sigelem_get = PL_vtbl_sigelem.svt_get;	1984	orig_sigelem_get = PL_vtbl_sigelem.svt_get; PL_vtbl_sigelem.svt_get = coro_sigelem_get;
1562	PL_vtbl_sigelem.svt_get = coro_sigelem_get;	1985	orig_sigelem_set = PL_vtbl_sigelem.svt_set; PL_vtbl_sigelem.svt_set = coro_sigelem_set;
1563	orig_sigelem_set = PL_vtbl_sigelem.svt_set;	1986	orig_sigelem_clr = PL_vtbl_sigelem.svt_clear; PL_vtbl_sigelem.svt_clear = coro_sigelem_clr;
1564	PL_vtbl_sigelem.svt_set = coro_sigelem_set;
1565		1987
1566	hv_sig = coro_get_hv (aTHX_ "SIG", TRUE);	1988	hv_sig = coro_get_hv (aTHX_ "SIG", TRUE);
1567	rv_diehook = newRV_inc ((SV *)gv_fetchpv ("Coro::State::diehook" , 0, SVt_PVCV));	1989	rv_diehook = newRV_inc ((SV *)gv_fetchpv ("Coro::State::diehook" , 0, SVt_PVCV));
1568	rv_warnhook = newRV_inc ((SV *)gv_fetchpv ("Coro::State::warnhook", 0, SVt_PVCV));	1990	rv_warnhook = newRV_inc ((SV *)gv_fetchpv ("Coro::State::warnhook", 0, SVt_PVCV));
1569		1991
…		…
1578	main_top_env = PL_top_env;	2000	main_top_env = PL_top_env;
1579		2001
1580	while (main_top_env->je_prev)	2002	while (main_top_env->je_prev)
1581	main_top_env = main_top_env->je_prev;	2003	main_top_env = main_top_env->je_prev;
1582		2004
1583	coroapi.ver = CORO_API_VERSION;	2005	coroapi.ver = CORO_API_VERSION;
1584	coroapi.rev = CORO_API_REVISION;	2006	coroapi.rev = CORO_API_REVISION;
1585	coroapi.transfer = api_transfer;	2007	coroapi.transfer = api_transfer;
		2008
		2009	{
		2010	SV **svp = hv_fetch (PL_modglobal, "Time::NVtime", 12, 0);
		2011
		2012	if (!svp) croak ("Time::HiRes is required");
		2013	if (!SvIOK (*svp)) croak ("Time::NVtime isn't a function pointer");
		2014
		2015	nvtime = INT2PTR (double ()(), SvIV (svp));
		2016	}
1586		2017
1587	assert (("PRIO_NORMAL must be 0", !PRIO_NORMAL));	2018	assert (("PRIO_NORMAL must be 0", !PRIO_NORMAL));
1588	}	2019	}
1589		2020
1590	SV *	2021	SV *
…		…
1614	av_push (coro->args, newSVsv (ST (i)));	2045	av_push (coro->args, newSVsv (ST (i)));
1615	}	2046	}
1616	OUTPUT:	2047	OUTPUT:
1617	RETVAL	2048	RETVAL
1618		2049
1619	# these not obviously related functions are all rolled into the same xs
1620	# function to increase chances that they all will call transfer with the same
1621	# stack offset
1622	void	2050	void
1623	_set_stacklevel (...)	2051	_set_stacklevel (...)
1624	ALIAS:	2052	ALIAS:
1625	Coro::State::transfer = 1	2053	Coro::State::transfer = 1
1626	Coro::schedule = 2	2054	Coro::schedule = 2
1627	Coro::cede = 3	2055	Coro::cede = 3
1628	Coro::cede_notself = 4	2056	Coro::cede_notself = 4
1629	CODE:	2057	CODE:
1630	{	2058	coro_slf_patch (aTHX_ cv, ix, &ST (0), items);
1631	struct transfer_args ta;
1632
1633	PUTBACK;
1634	switch (ix)
1635	{
1636	case 0:
1637	ta.prev = (struct coro )INT2PTR (coro_cctx , SvIV (ST (0)));
1638	ta.next = 0;
1639	break;
1640
1641	case 1:
1642	if (items != 2)
1643	croak ("Coro::State::transfer (prev,next) expects two arguments, not %d", items);
1644
1645	prepare_transfer (aTHX_ &ta, ST (0), ST (1));
1646	break;
1647
1648	case 2:
1649	prepare_schedule (aTHX_ &ta);
1650	break;
1651
1652	case 3:
1653	prepare_cede (aTHX_ &ta);
1654	break;
1655
1656	case 4:
1657	if (!prepare_cede_notself (aTHX_ &ta))
1658	XSRETURN_EMPTY;
1659
1660	break;
1661	}
1662	SPAGAIN;
1663
1664	BARRIER;
1665	PUTBACK;
1666	TRANSFER (ta);
1667	SPAGAIN; /* might be the sp of a different coroutine now */
1668	/* be extra careful not to ever do anything after TRANSFER */
1669	}
1670		2059
1671	bool	2060	bool
1672	_destroy (SV *coro_sv)	2061	_destroy (SV *coro_sv)
1673	CODE:	2062	CODE:
1674	RETVAL = coro_state_destroy (aTHX_ SvSTATE (coro_sv));	2063	RETVAL = coro_state_destroy (aTHX_ SvSTATE (coro_sv));
1675	OUTPUT:	2064	OUTPUT:
1676	RETVAL	2065	RETVAL
1677		2066
1678	void	2067	void
1679	_exit (code)	2068	_exit (int code)
1680	int code
1681	PROTOTYPE: $	2069	PROTOTYPE: $
1682	CODE:	2070	CODE:
1683	_exit (code);	2071	_exit (code);
1684		2072
1685	int	2073	int
1686	cctx_stacksize (int new_stacksize = 0)	2074	cctx_stacksize (int new_stacksize = 0)
1687	CODE:	2075	CODE:
1688	RETVAL = coro_stacksize;	2076	RETVAL = cctx_stacksize;
1689	if (new_stacksize)	2077	if (new_stacksize)
		2078	{
1690	coro_stacksize = new_stacksize;	2079	cctx_stacksize = new_stacksize;
		2080	++cctx_gen;
		2081	}
		2082	OUTPUT:
		2083	RETVAL
		2084
		2085	int
		2086	cctx_max_idle (int max_idle = 0)
		2087	CODE:
		2088	RETVAL = cctx_max_idle;
		2089	if (max_idle > 1)
		2090	cctx_max_idle = max_idle;
1691	OUTPUT:	2091	OUTPUT:
1692	RETVAL	2092	RETVAL
1693		2093
1694	int	2094	int
1695	cctx_count ()	2095	cctx_count ()
…		…
1719	call (Coro::State coro, SV *coderef)	2119	call (Coro::State coro, SV *coderef)
1720	ALIAS:	2120	ALIAS:
1721	eval = 1	2121	eval = 1
1722	CODE:	2122	CODE:
1723	{	2123	{
1724	if (coro->mainstack)	2124	if (coro->mainstack && ((coro->flags & CF_RUNNING) \|\| coro->slot))
1725	{	2125	{
1726	struct coro temp;	2126	struct coro temp;
1727		2127
1728	if (!(coro->flags & CF_RUNNING))	2128	if (!(coro->flags & CF_RUNNING))
1729	{	2129	{
…		…
1773	RETVAL = boolSV (coro->flags & ix);	2173	RETVAL = boolSV (coro->flags & ix);
1774	OUTPUT:	2174	OUTPUT:
1775	RETVAL	2175	RETVAL
1776		2176
1777	void	2177	void
		2178	throw (Coro::State self, SV *throw = &PL_sv_undef)
		2179	PROTOTYPE: $;$
		2180	CODE:
		2181	SvREFCNT_dec (self->throw);
		2182	self->throw = SvOK (throw) ? newSVsv (throw) : 0;
		2183
		2184	void
1778	api_trace (SV *coro, int flags = CC_TRACE \| CC_TRACE_SUB)	2185	api_trace (SV *coro, int flags = CC_TRACE \| CC_TRACE_SUB)
1779		2186
1780	SV *	2187	SV *
1781	has_stack (Coro::State coro)	2188	has_cctx (Coro::State coro)
1782	PROTOTYPE: $	2189	PROTOTYPE: $
1783	CODE:	2190	CODE:
1784	RETVAL = boolSV (!!coro->cctx);	2191	RETVAL = boolSV (!!coro->cctx);
1785	OUTPUT:	2192	OUTPUT:
1786	RETVAL	2193	RETVAL
…		…
1791	CODE:	2198	CODE:
1792	RETVAL = (coro->cctx ? coro->cctx->flags : 0) & CC_TRACE_ALL;	2199	RETVAL = (coro->cctx ? coro->cctx->flags : 0) & CC_TRACE_ALL;
1793	OUTPUT:	2200	OUTPUT:
1794	RETVAL	2201	RETVAL
1795		2202
1796	IV	2203	UV
1797	rss (Coro::State coro)	2204	rss (Coro::State coro)
1798	PROTOTYPE: $	2205	PROTOTYPE: $
1799	ALIAS:	2206	ALIAS:
1800	usecount = 1	2207	usecount = 1
1801	CODE:	2208	CODE:
…		…
1805	case 1: RETVAL = coro->usecount; break;	2212	case 1: RETVAL = coro->usecount; break;
1806	}	2213	}
1807	OUTPUT:	2214	OUTPUT:
1808	RETVAL	2215	RETVAL
1809		2216
		2217	void
		2218	force_cctx ()
		2219	CODE:
		2220	struct coro *coro = SvSTATE (coro_current);
		2221	coro->cctx->idle_sp = 0;
		2222
		2223	void
		2224	swap_defsv (Coro::State self)
		2225	PROTOTYPE: $
		2226	ALIAS:
		2227	swap_defav = 1
		2228	CODE:
		2229	if (!self->slot)
		2230	croak ("cannot swap state with coroutine that has no saved state");
		2231	else
		2232	{
		2233	SV src = ix ? (SV )&GvAV (PL_defgv) : &GvSV (PL_defgv);
		2234	SV dst = ix ? (SV )&self->slot->defav : (SV **)&self->slot->defsv;
		2235
		2236	SV tmp = src; src = dst; *dst = tmp;
		2237	}
1810		2238
1811	MODULE = Coro::State PACKAGE = Coro	2239	MODULE = Coro::State PACKAGE = Coro
1812		2240
1813	BOOT:	2241	BOOT:
1814	{	2242	{
1815	int i;	2243	int i;
1816		2244
		2245	av_async_pool = coro_get_av (aTHX_ "Coro::async_pool", TRUE);
1817	sv_pool_rss = coro_get_sv (aTHX_ "Coro::POOL_RSS" , TRUE);	2246	sv_pool_rss = coro_get_sv (aTHX_ "Coro::POOL_RSS" , TRUE);
1818	sv_pool_size = coro_get_sv (aTHX_ "Coro::POOL_SIZE" , TRUE);	2247	sv_pool_size = coro_get_sv (aTHX_ "Coro::POOL_SIZE" , TRUE);
1819	av_async_pool = coro_get_av (aTHX_ "Coro::async_pool", TRUE);
1820		2248
1821	coro_current = coro_get_sv (aTHX_ "Coro::current", FALSE);	2249	coro_current = coro_get_sv (aTHX_ "Coro::current", FALSE);
1822	SvREADONLY_on (coro_current);	2250	SvREADONLY_on (coro_current);
1823		2251
1824	coro_stash = gv_stashpv ("Coro", TRUE);	2252	coro_stash = gv_stashpv ("Coro", TRUE);
…		…
1832		2260
1833	for (i = PRIO_MAX - PRIO_MIN + 1; i--; )	2261	for (i = PRIO_MAX - PRIO_MIN + 1; i--; )
1834	coro_ready[i] = newAV ();	2262	coro_ready[i] = newAV ();
1835		2263
1836	{	2264	{
1837	SV *sv = perl_get_sv ("Coro::API", TRUE);	2265	SV *sv = coro_get_sv (aTHX_ "Coro::API", TRUE);
1838	perl_get_sv ("Coro::API", TRUE); /* silence 5.10 warning */
1839		2266
1840	coroapi.schedule = api_schedule;	2267	coroapi.schedule = api_schedule;
1841	coroapi.cede = api_cede;	2268	coroapi.cede = api_cede;
1842	coroapi.cede_notself = api_cede_notself;	2269	coroapi.cede_notself = api_cede_notself;
1843	coroapi.ready = api_ready;	2270	coroapi.ready = api_ready;
…		…
1854	void	2281	void
1855	_set_current (SV *current)	2282	_set_current (SV *current)
1856	PROTOTYPE: $	2283	PROTOTYPE: $
1857	CODE:	2284	CODE:
1858	SvREFCNT_dec (SvRV (coro_current));	2285	SvREFCNT_dec (SvRV (coro_current));
1859	SvRV_set (coro_current, SvREFCNT_inc (SvRV (current)));	2286	SvRV_set (coro_current, SvREFCNT_inc_NN (SvRV (current)));
		2287
		2288	void
		2289	_set_readyhook (SV *hook)
		2290	PROTOTYPE: $
		2291	CODE:
		2292	LOCK;
		2293	SvREFCNT_dec (coro_readyhook);
		2294	coro_readyhook = SvOK (hook) ? newSVsv (hook) : 0;
		2295	UNLOCK;
1860		2296
1861	int	2297	int
1862	prio (Coro::State coro, int newprio = 0)	2298	prio (Coro::State coro, int newprio = 0)
1863	ALIAS:	2299	ALIAS:
1864	nice = 1	2300	nice = 1
…		…
1894	CODE:	2330	CODE:
1895	RETVAL = coro_nready;	2331	RETVAL = coro_nready;
1896	OUTPUT:	2332	OUTPUT:
1897	RETVAL	2333	RETVAL
1898		2334
1899	void
1900	throw (Coro::State self, SV *throw = &PL_sv_undef)
1901	PROTOTYPE: $;$
1902	CODE:
1903	SvREFCNT_dec (self->throw);
1904	self->throw = SvOK (throw) ? newSVsv (throw) : 0;
1905
1906	# for async_pool speedup	2335	# for async_pool speedup
1907	void	2336	void
1908	_pool_1 (SV *cb)	2337	_pool_1 (SV *cb)
1909	CODE:	2338	CODE:
1910	{	2339	{
…		…
1915	AV *invoke_av;	2344	AV *invoke_av;
1916	int i, len;	2345	int i, len;
1917		2346
1918	if (!invoke)	2347	if (!invoke)
1919	{	2348	{
1920	SvREFCNT_dec (PL_diehook); PL_diehook = 0;	2349	SV *old = PL_diehook;
		2350	PL_diehook = 0;
		2351	SvREFCNT_dec (old);
1921	croak ("\3async_pool terminate\2\n");	2352	croak ("\3async_pool terminate\2\n");
1922	}	2353	}
1923		2354
1924	SvREFCNT_dec (coro->saved_deffh);	2355	SvREFCNT_dec (coro->saved_deffh);
1925	coro->saved_deffh = SvREFCNT_inc ((SV *)PL_defoutgv);	2356	coro->saved_deffh = SvREFCNT_inc_NN ((SV *)PL_defoutgv);
1926		2357
1927	hv_store (hv, "desc", sizeof ("desc") - 1,	2358	hv_store (hv, "desc", sizeof ("desc") - 1,
1928	newSVpvn ("[async_pool]", sizeof ("[async_pool]") - 1), 0);	2359	newSVpvn ("[async_pool]", sizeof ("[async_pool]") - 1), 0);
1929		2360
1930	invoke_av = (AV *)SvRV (invoke);	2361	invoke_av = (AV *)SvRV (invoke);
…		…
1934		2365
1935	if (len > 0)	2366	if (len > 0)
1936	{	2367	{
1937	av_fill (defav, len - 1);	2368	av_fill (defav, len - 1);
1938	for (i = 0; i < len; ++i)	2369	for (i = 0; i < len; ++i)
1939	av_store (defav, i, SvREFCNT_inc (AvARRAY (invoke_av)[i + 1]));	2370	av_store (defav, i, SvREFCNT_inc_NN (AvARRAY (invoke_av)[i + 1]));
1940	}	2371	}
1941		2372
1942	SvREFCNT_dec (invoke);	2373	SvREFCNT_dec (invoke);
1943	}	2374	}
1944		2375
…		…
1951	sv_setsv (cb, &PL_sv_undef);	2382	sv_setsv (cb, &PL_sv_undef);
1952		2383
1953	SvREFCNT_dec ((SV )PL_defoutgv); PL_defoutgv = (GV )coro->saved_deffh;	2384	SvREFCNT_dec ((SV )PL_defoutgv); PL_defoutgv = (GV )coro->saved_deffh;
1954	coro->saved_deffh = 0;	2385	coro->saved_deffh = 0;
1955		2386
1956	if (coro_rss (aTHX_ coro) > SvIV (sv_pool_rss)	2387	if (coro_rss (aTHX_ coro) > SvUV (sv_pool_rss)
1957	\|\| av_len (av_async_pool) + 1 >= SvIV (sv_pool_size))	2388	\|\| av_len (av_async_pool) + 1 >= SvIV (sv_pool_size))
1958	{	2389	{
1959	SvREFCNT_dec (PL_diehook); PL_diehook = 0;	2390	SV *old = PL_diehook;
		2391	PL_diehook = 0;
		2392	SvREFCNT_dec (old);
1960	croak ("\3async_pool terminate\2\n");	2393	croak ("\3async_pool terminate\2\n");
1961	}	2394	}
1962		2395
1963	av_clear (GvAV (PL_defgv));	2396	av_clear (GvAV (PL_defgv));
1964	hv_store ((HV *)SvRV (coro_current), "desc", sizeof ("desc") - 1,	2397	hv_store ((HV *)SvRV (coro_current), "desc", sizeof ("desc") - 1,
…		…
1970	api_trace (coro_current, 0);	2403	api_trace (coro_current, 0);
1971		2404
1972	av_push (av_async_pool, newSVsv (coro_current));	2405	av_push (av_async_pool, newSVsv (coro_current));
1973	}	2406	}
1974		2407
		2408	#if 0
		2409
		2410	void
		2411	_generator_call (...)
		2412	PROTOTYPE: @
		2413	PPCODE:
		2414	fprintf (stderr, "call %p\n", CvXSUBANY(cv).any_ptr);
		2415	xxxx
		2416	abort ();
		2417
		2418	SV *
		2419	gensub (SV *sub, ...)
		2420	PROTOTYPE: &;@
		2421	CODE:
		2422	{
		2423	struct coro *coro;
		2424	MAGIC *mg;
		2425	CV *xcv;
		2426	CV ncv = (CV )newSV_type (SVt_PVCV);
		2427	int i;
		2428
		2429	CvGV (ncv) = CvGV (cv);
		2430	CvFILE (ncv) = CvFILE (cv);
		2431
		2432	Newz (0, coro, 1, struct coro);
		2433	coro->args = newAV ();
		2434	coro->flags = CF_NEW;
		2435
		2436	av_extend (coro->args, items - 1);
		2437	for (i = 1; i < items; i++)
		2438	av_push (coro->args, newSVsv (ST (i)));
		2439
		2440	CvISXSUB_on (ncv);
		2441	CvXSUBANY (ncv).any_ptr = (void *)coro;
		2442
		2443	xcv = GvCV (gv_fetchpv ("Coro::_generator_call", 0, SVt_PVCV));
		2444
		2445	CvXSUB (ncv) = CvXSUB (xcv);
		2446	CvANON_on (ncv);
		2447
		2448	mg = sv_magicext ((SV )ncv, 0, CORO_MAGIC_type_state, &coro_gensub_vtbl, (char )coro, 0);
		2449	RETVAL = newRV_noinc ((SV *)ncv);
		2450	}
		2451	OUTPUT:
		2452	RETVAL
		2453
		2454	#endif
		2455
1975		2456
1976	MODULE = Coro::State PACKAGE = Coro::AIO	2457	MODULE = Coro::State PACKAGE = Coro::AIO
1977		2458
1978	SV *	2459	void
1979	_get_state ()	2460	_get_state (SV *self)
1980	CODE:	2461	PPCODE:
1981	{	2462	{
1982	struct io_state *data;	2463	AV *defav = GvAV (PL_defgv);
1983		2464	AV *av = newAV ();
		2465	int i;
1984	RETVAL = newSV (sizeof (struct io_state));	2466	SV *data_sv = newSV (sizeof (struct io_state));
1985	data = (struct io_state *)SvPVX (RETVAL);	2467	struct io_state data = (struct io_state )SvPVX (data_sv);
1986	SvCUR_set (RETVAL, sizeof (struct io_state));	2468	SvCUR_set (data_sv, sizeof (struct io_state));
1987	SvPOK_only (RETVAL);	2469	SvPOK_only (data_sv);
1988		2470
1989	data->errorno = errno;	2471	data->errorno = errno;
1990	data->laststype = PL_laststype;	2472	data->laststype = PL_laststype;
1991	data->laststatval = PL_laststatval;	2473	data->laststatval = PL_laststatval;
1992	data->statcache = PL_statcache;	2474	data->statcache = PL_statcache;
		2475
		2476	av_extend (av, AvFILLp (defav) + 1 + 1);
		2477
		2478	for (i = 0; i <= AvFILLp (defav); ++i)
		2479	av_push (av, SvREFCNT_inc_NN (AvARRAY (defav)[i]));
		2480
		2481	av_push (av, data_sv);
		2482
		2483	XPUSHs (sv_2mortal (newRV_noinc ((SV *)av)));
		2484
		2485	api_ready (self);
1993	}	2486	}
1994	OUTPUT:
1995	RETVAL
1996		2487
1997	void	2488	void
1998	_set_state (char *data_)	2489	_set_state (SV *state)
1999	PROTOTYPE: $	2490	PROTOTYPE: $
2000	CODE:	2491	PPCODE:
2001	{	2492	{
2002	struct io_state data = (void )data_;	2493	AV av = (AV )SvRV (state);
		2494	struct io_state data = (struct io_state )SvPVX (AvARRAY (av)[AvFILLp (av)]);
		2495	int i;
2003		2496
2004	errno = data->errorno;	2497	errno = data->errorno;
2005	PL_laststype = data->laststype;	2498	PL_laststype = data->laststype;
2006	PL_laststatval = data->laststatval;	2499	PL_laststatval = data->laststatval;
2007	PL_statcache = data->statcache;	2500	PL_statcache = data->statcache;
2008	}
2009		2501
		2502	EXTEND (SP, AvFILLp (av));
		2503	for (i = 0; i < AvFILLp (av); ++i)
		2504	PUSHs (sv_2mortal (SvREFCNT_inc_NN (AvARRAY (av)[i])));
		2505	}
		2506
		2507
		2508	MODULE = Coro::State PACKAGE = Coro::AnyEvent
		2509
		2510	BOOT:
		2511	sv_activity = coro_get_sv (aTHX_ "Coro::AnyEvent::ACTIVITY", TRUE);
		2512
		2513	SV *
		2514	_schedule (...)
		2515	PROTOTYPE: @
		2516	CODE:
		2517	{
		2518	static int incede;
		2519
		2520	api_cede_notself ();
		2521
		2522	++incede;
		2523	while (coro_nready >= incede && api_cede ())
		2524	;
		2525
		2526	sv_setsv (sv_activity, &PL_sv_undef);
		2527	if (coro_nready >= incede)
		2528	{
		2529	PUSHMARK (SP);
		2530	PUTBACK;
		2531	call_pv ("Coro::AnyEvent::_activity", G_DISCARD \| G_EVAL);
		2532	SPAGAIN;
		2533	}
		2534
		2535	--incede;
		2536	}
		2537
		2538
		2539	MODULE = Coro::State PACKAGE = PerlIO::cede
		2540
		2541	BOOT:
		2542	PerlIO_define_layer (aTHX_ &PerlIO_cede);
		2543

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Comparing Coro/Coro/State.xs (file contents): Revision 1.223 by root, Wed Feb 13 15:46:00 2008 UTC vs. Revision 1.269 by root, Fri Nov 14 06:50:11 2008 UTC

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Comparing Coro/Coro/State.xs (file contents):
Revision 1.223 by root, Wed Feb 13 15:46:00 2008 UTC vs.
Revision 1.269 by root, Fri Nov 14 06:50:11 2008 UTC