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

Comparing Coro/Coro/State.xs (file contents):
Revision 1.130 by root, Mon Dec 25 13:25:55 2006 UTC vs.
Revision 1.150 by root, Wed Jun 13 21:04:48 2007 UTC

…		…
1	#include "libcoro/coro.c"	1	#include "libcoro/coro.c"
		2
		3	#define PERL_NO_GET_CONTEXT
2		4
3	#include "EXTERN.h"	5	#include "EXTERN.h"
4	#include "perl.h"	6	#include "perl.h"
5	#include "XSUB.h"	7	#include "XSUB.h"
6		8
31	#else	33	#else
32	# define PAGESIZE 0	34	# define PAGESIZE 0
33	# define BOOT_PAGESIZE (void)0	35	# define BOOT_PAGESIZE (void)0
34	#endif	36	#endif
35		37
36	#if USE_VALGRIND	38	#if CORO_USE_VALGRIND
37	# include <valgrind/valgrind.h>	39	# include <valgrind/valgrind.h>
		40	# define REGISTER_STACK(cctx,start,end) (cctx)->valgrind_id = VALGRIND_STACK_REGISTER ((start), (end))
		41	#else
		42	# define REGISTER_STACK(cctx,start,end)
38	#endif	43	#endif
39		44
40	/* the maximum number of idle cctx that will be pooled */	45	/* the maximum number of idle cctx that will be pooled */
41	#define MAX_IDLE_CCTX 8	46	#define MAX_IDLE_CCTX 8
42		47
…		…
71	#ifndef SvRV_set	76	#ifndef SvRV_set
72	# define SvRV_set(s,v) SvRV(s) = (v)	77	# define SvRV_set(s,v) SvRV(s) = (v)
73	#endif	78	#endif
74		79
75	#if !__i386 && !__x86_64 && !__powerpc && !__m68k && !__alpha && !__mips && !__sparc64	80	#if !__i386 && !__x86_64 && !__powerpc && !__m68k && !__alpha && !__mips && !__sparc64
76	# undef STACKGUARD	81	# undef CORO_STACKGUARD
77	#endif	82	#endif
78		83
79	#ifndef STACKGUARD	84	#ifndef CORO_STACKGUARD
80	# define STACKGUARD 0	85	# define CORO_STACKGUARD 0
81	#endif	86	#endif
82		87
83	/* prefer perl internal functions over our own? */	88	/* prefer perl internal functions over our own? */
84	#ifndef PREFER_PERL_FUNCTIONS	89	#ifndef CORO_PREFER_PERL_FUNCTIONS
85	# define PREFER_PERL_FUNCTIONS 0	90	# define CORO_PREFER_PERL_FUNCTIONS 0
86	#endif	91	#endif
87		92
88	/* The next macro should declare a variable stacklevel that contains and approximation	93	/* The next macro should declare a variable stacklevel that contains and approximation
89	* to the current C stack pointer. Its property is that it changes with each call	94	* to the current C stack pointer. Its property is that it changes with each call
90	* and should be unique. */	95	* and should be unique. */
…		…
93		98
94	#define IN_DESTRUCT (PL_main_cv == Nullcv)	99	#define IN_DESTRUCT (PL_main_cv == Nullcv)
95		100
96	#if __GNUC__ >= 3	101	#if __GNUC__ >= 3
97	# define attribute(x) __attribute__(x)	102	# define attribute(x) __attribute__(x)
		103	# define BARRIER __asm__ __volatile__ ("" : : : "memory")
98	#else	104	#else
99	# define attribute(x)	105	# define attribute(x)
		106	# define BARRIER
100	#endif	107	#endif
101		108
102	#define NOINLINE attribute ((noinline))	109	#define NOINLINE attribute ((noinline))
103		110
104	#include "CoroAPI.h"	111	#include "CoroAPI.h"
…		…
110	#else	117	#else
111	# define LOCK (void)0	118	# define LOCK (void)0
112	# define UNLOCK (void)0	119	# define UNLOCK (void)0
113	#endif	120	#endif
114		121
		122	/* helper storage struct for Coro::AIO */
115	struct io_state	123	struct io_state
116	{	124	{
117	int errorno;	125	int errorno;
118	I32 laststype;	126	I32 laststype;
119	int laststatval;	127	int laststatval;
120	Stat_t statcache;	128	Stat_t statcache;
121	};	129	};
122		130
		131	static size_t coro_stacksize = CORO_STACKSIZE;
123	static struct CoroAPI coroapi;	132	static struct CoroAPI coroapi;
124	static AV main_mainstack; / used to differentiate between $main and others */	133	static AV main_mainstack; / used to differentiate between $main and others */
		134	static JMPENV *main_top_env;
125	static HV coro_state_stash, coro_stash;	135	static HV coro_state_stash, coro_stash;
126	static SV coro_mortal; / will be freed after next transfer */	136	static SV coro_mortal; / will be freed after next transfer */
127		137
128	static struct coro_cctx *cctx_first;	138	static struct coro_cctx *cctx_first;
129	static int cctx_count, cctx_idle;	139	static int cctx_count, cctx_idle;
…		…
132	typedef struct coro_cctx {	142	typedef struct coro_cctx {
133	struct coro_cctx *next;	143	struct coro_cctx *next;
134		144
135	/* the stack */	145	/* the stack */
136	void *sptr;	146	void *sptr;
137	long ssize; /* positive == mmap, otherwise malloc */	147	size_t ssize;
138		148
139	/* cpu state */	149	/* cpu state */
140	void idle_sp; / sp of top-level transfer/schedule/cede call */	150	void idle_sp; / sp of top-level transfer/schedule/cede call */
		151	JMPENV idle_te; / same as idle_sp, but for top_env, TODO: remove once stable */
141	JMPENV *top_env;	152	JMPENV *top_env;
142	coro_context cctx;	153	coro_context cctx;
143		154
144	int inuse;
145
146	#if USE_VALGRIND	155	#if CORO_USE_VALGRIND
147	int valgrind_id;	156	int valgrind_id;
148	#endif	157	#endif
		158	char inuse, mapped;
149	} coro_cctx;	159	} coro_cctx;
150		160
151	enum {	161	enum {
152	CF_RUNNING = 0x0001, /* coroutine is running */	162	CF_RUNNING = 0x0001, /* coroutine is running */
153	CF_READY = 0x0002, /* coroutine is ready */	163	CF_READY = 0x0002, /* coroutine is ready */
154	CF_NEW = 0x0004, /* ahs never been switched to */	164	CF_NEW = 0x0004, /* has never been switched to */
		165	CF_DESTROYED = 0x0008, /* coroutine data has been freed */
155	};	166	};
156		167
157	/* this is a structure representing a perl-level coroutine */	168	/* this is a structure representing a perl-level coroutine */
158	struct coro {	169	struct coro {
159	/* the c coroutine allocated to this perl coroutine, if any */	170	/* the c coroutine allocated to this perl coroutine, if any */
…		…
167		178
168	/* optionally saved, might be zero */	179	/* optionally saved, might be zero */
169	AV defav; / @_ */	180	AV defav; / @_ */
170	SV defsv; / $_ */	181	SV defsv; / $_ */
171	SV errsv; / $@ */	182	SV errsv; / $@ */
		183	GV deffh; / default filehandle */
172	SV irssv; / $/ */	184	SV irssv; / $/ */
173	SV irssv_sv; / real $/ cache */	185	SV irssv_sv; / real $/ cache */
174		186
175	#define VAR(name,type) type name;	187	#define VAR(name,type) type name;
176	# include "state.h"	188	# include "state.h"
…		…
181	};	193	};
182		194
183	typedef struct coro *Coro__State;	195	typedef struct coro *Coro__State;
184	typedef struct coro *Coro__State_or_hashref;	196	typedef struct coro *Coro__State_or_hashref;
185		197
		198	/ Coro ******************************************************************/
		199
		200	#define PRIO_MAX 3
		201	#define PRIO_HIGH 1
		202	#define PRIO_NORMAL 0
		203	#define PRIO_LOW -1
		204	#define PRIO_IDLE -3
		205	#define PRIO_MIN -4
		206
		207	/* for Coro.pm */
		208	static SV *coro_current;
		209	static AV *coro_ready [PRIO_MAX-PRIO_MIN+1];
		210	static int coro_nready;
		211
		212	/ lowlevel stuff ********************************************************/
		213
186	static AV *	214	static AV *
187	coro_clone_padlist (CV *cv)	215	coro_clone_padlist (pTHX_ CV *cv)
188	{	216	{
189	AV *padlist = CvPADLIST (cv);	217	AV *padlist = CvPADLIST (cv);
190	AV newpadlist, newpad;	218	AV newpadlist, newpad;
191		219
192	newpadlist = newAV ();	220	newpadlist = newAV ();
…		…
204		232
205	return newpadlist;	233	return newpadlist;
206	}	234	}
207		235
208	static void	236	static void
209	free_padlist (AV *padlist)	237	free_padlist (pTHX_ AV *padlist)
210	{	238	{
211	/* may be during global destruction */	239	/* may be during global destruction */
212	if (SvREFCNT (padlist))	240	if (SvREFCNT (padlist))
213	{	241	{
214	I32 i = AvFILLp (padlist);	242	I32 i = AvFILLp (padlist);
…		…
235	AV *padlist;	263	AV *padlist;
236	AV av = (AV )mg->mg_obj;	264	AV av = (AV )mg->mg_obj;
237		265
238	/* casting is fun. */	266	/* casting is fun. */
239	while (&PL_sv_undef != (SV )(padlist = (AV )av_pop (av)))	267	while (&PL_sv_undef != (SV )(padlist = (AV )av_pop (av)))
240	free_padlist (padlist);	268	free_padlist (aTHX_ padlist);
241		269
242	SvREFCNT_dec (av);	270	SvREFCNT_dec (av);
243		271
244	return 0;	272	return 0;
245	}	273	}
…		…
255	: mg_find ((SV *)cv, PERL_MAGIC_coro) \	283	: mg_find ((SV *)cv, PERL_MAGIC_coro) \
256	: 0	284	: 0
257		285
258	/* the next two functions merely cache the padlists */	286	/* the next two functions merely cache the padlists */
259	static void	287	static void
260	get_padlist (CV *cv)	288	get_padlist (pTHX_ CV *cv)
261	{	289	{
262	MAGIC *mg = CORO_MAGIC (cv);	290	MAGIC *mg = CORO_MAGIC (cv);
263	AV *av;	291	AV *av;
264		292
265	if (mg && AvFILLp ((av = (AV *)mg->mg_obj)) >= 0)	293	if (mg && AvFILLp ((av = (AV *)mg->mg_obj)) >= 0)
266	CvPADLIST (cv) = (AV *)AvARRAY (av)[AvFILLp (av)--];	294	CvPADLIST (cv) = (AV *)AvARRAY (av)[AvFILLp (av)--];
267	else	295	else
268	{	296	{
269	#if PREFER_PERL_FUNCTIONS	297	#if CORO_PREFER_PERL_FUNCTIONS
270	/* this is probably cleaner, but also slower? */	298	/* this is probably cleaner, but also slower? */
271	CV *cp = Perl_cv_clone (cv);	299	CV *cp = Perl_cv_clone (cv);
272	CvPADLIST (cv) = CvPADLIST (cp);	300	CvPADLIST (cv) = CvPADLIST (cp);
273	CvPADLIST (cp) = 0;	301	CvPADLIST (cp) = 0;
274	SvREFCNT_dec (cp);	302	SvREFCNT_dec (cp);
275	#else	303	#else
276	CvPADLIST (cv) = coro_clone_padlist (cv);	304	CvPADLIST (cv) = coro_clone_padlist (aTHX_ cv);
277	#endif	305	#endif
278	}	306	}
279	}	307	}
280		308
281	static void	309	static void
282	put_padlist (CV *cv)	310	put_padlist (pTHX_ CV *cv)
283	{	311	{
284	MAGIC *mg = CORO_MAGIC (cv);	312	MAGIC *mg = CORO_MAGIC (cv);
285	AV *av;	313	AV *av;
286		314
287	if (!mg)	315	if (!mg)
…		…
298	av_extend (av, AvMAX (av) + 1);	326	av_extend (av, AvMAX (av) + 1);
299		327
300	AvARRAY (av)[++AvFILLp (av)] = (SV *)CvPADLIST (cv);	328	AvARRAY (av)[++AvFILLp (av)] = (SV *)CvPADLIST (cv);
301	}	329	}
302		330
		331	/ load & save, init *****************************************************/
		332
303	#define SB do {	333	#define SB do {
304	#define SE } while (0)	334	#define SE } while (0)
305		335
306	#define REPLACE_SV(sv,val) SB SvREFCNT_dec (sv); (sv) = (val); (val) = 0; SE	336	#define REPLACE_SV(sv,val) SB SvREFCNT_dec (sv); (sv) = (val); (val) = 0; SE
307		337
308	static void	338	static void
309	load_perl (Coro__State c)	339	load_perl (pTHX_ Coro__State c)
310	{	340	{
311	#define VAR(name,type) PL_ ## name = c->name;	341	#define VAR(name,type) PL_ ## name = c->name;
312	# include "state.h"	342	# include "state.h"
313	#undef VAR	343	#undef VAR
314		344
315	if (c->defav) REPLACE_SV (GvAV (PL_defgv), c->defav);	345	if (c->defav) REPLACE_SV (GvAV (PL_defgv), c->defav);
316	if (c->defsv) REPLACE_SV (DEFSV , c->defsv);	346	if (c->defsv) REPLACE_SV (DEFSV , c->defsv);
317	if (c->errsv) REPLACE_SV (ERRSV , c->errsv);	347	if (c->errsv) REPLACE_SV (ERRSV , c->errsv);
		348	if (c->deffh) REPLACE_SV (PL_defoutgv , c->deffh);
		349
318	if (c->irssv)	350	if (c->irssv)
319	{	351	{
320	if (c->irssv == PL_rs \|\| sv_eq (PL_rs, c->irssv))	352	if (c->irssv == PL_rs \|\| sv_eq (PL_rs, c->irssv))
		353	{
321	SvREFCNT_dec (c->irssv);	354	SvREFCNT_dec (c->irssv);
		355	c->irssv = 0;
		356	}
322	else	357	else
323	{	358	{
324	REPLACE_SV (PL_rs, c->irssv);	359	REPLACE_SV (PL_rs, c->irssv);
325	if (!c->irssv_sv) c->irssv_sv = get_sv ("/", 0);	360	if (!c->irssv_sv) c->irssv_sv = get_sv ("/", 0);
326	sv_setsv (c->irssv_sv, PL_rs);	361	sv_setsv (c->irssv_sv, PL_rs);
…		…
332	CV *cv;	367	CV *cv;
333		368
334	/* now do the ugly restore mess */	369	/* now do the ugly restore mess */
335	while ((cv = (CV *)POPs))	370	while ((cv = (CV *)POPs))
336	{	371	{
337	put_padlist (cv); /* mark this padlist as available */	372	put_padlist (aTHX_ cv); /* mark this padlist as available */
338	CvDEPTH (cv) = PTR2IV (POPs);	373	CvDEPTH (cv) = PTR2IV (POPs);
339	CvPADLIST (cv) = (AV *)POPs;	374	CvPADLIST (cv) = (AV *)POPs;
340	}	375	}
341		376
342	PUTBACK;	377	PUTBACK;
343	}	378	}
		379	assert (!PL_comppad \|\| AvARRAY (PL_comppad));//D
344	}	380	}
345		381
346	static void	382	static void
347	save_perl (Coro__State c)	383	save_perl (pTHX_ Coro__State c)
348	{	384	{
		385	assert (!PL_comppad \|\| AvARRAY (PL_comppad));//D
349	{	386	{
350	dSP;	387	dSP;
351	I32 cxix = cxstack_ix;	388	I32 cxix = cxstack_ix;
352	PERL_CONTEXT *ccstk = cxstack;	389	PERL_CONTEXT *ccstk = cxstack;
353	PERL_SI *top_si = PL_curstackinfo;	390	PERL_SI *top_si = PL_curstackinfo;
…		…
376	PUSHs ((SV *)CvPADLIST (cv));	413	PUSHs ((SV *)CvPADLIST (cv));
377	PUSHs (INT2PTR (SV *, CvDEPTH (cv)));	414	PUSHs (INT2PTR (SV *, CvDEPTH (cv)));
378	PUSHs ((SV *)cv);	415	PUSHs ((SV *)cv);
379		416
380	CvDEPTH (cv) = 0;	417	CvDEPTH (cv) = 0;
381	get_padlist (cv);	418	get_padlist (aTHX_ cv);
382	}	419	}
383	}	420	}
384	}	421	}
385		422
386	if (top_si->si_type == PERLSI_MAIN)	423	if (top_si->si_type == PERLSI_MAIN)
…		…
395	}	432	}
396		433
397	c->defav = c->save & CORO_SAVE_DEFAV ? (AV *)SvREFCNT_inc (GvAV (PL_defgv)) : 0;	434	c->defav = c->save & CORO_SAVE_DEFAV ? (AV *)SvREFCNT_inc (GvAV (PL_defgv)) : 0;
398	c->defsv = c->save & CORO_SAVE_DEFSV ? SvREFCNT_inc (DEFSV) : 0;	435	c->defsv = c->save & CORO_SAVE_DEFSV ? SvREFCNT_inc (DEFSV) : 0;
399	c->errsv = c->save & CORO_SAVE_ERRSV ? SvREFCNT_inc (ERRSV) : 0;	436	c->errsv = c->save & CORO_SAVE_ERRSV ? SvREFCNT_inc (ERRSV) : 0;
		437	c->deffh = c->save & CORO_SAVE_DEFFH ? (GV *)SvREFCNT_inc (PL_defoutgv) : 0;
400	c->irssv = c->save & CORO_SAVE_IRSSV ? SvREFCNT_inc (PL_rs) : 0;	438	c->irssv = c->save & CORO_SAVE_IRSSV ? SvREFCNT_inc (PL_rs) : 0;
401		439
402	#define VAR(name,type)c->name = PL_ ## name;	440	#define VAR(name,type)c->name = PL_ ## name;
403	# include "state.h"	441	# include "state.h"
404	#undef VAR	442	#undef VAR
…		…
408	* allocate various perl stacks. This is an exact copy	446	* allocate various perl stacks. This is an exact copy
409	* of perl.c:init_stacks, except that it uses less memory	447	* of perl.c:init_stacks, except that it uses less memory
410	* on the (sometimes correct) assumption that coroutines do	448	* on the (sometimes correct) assumption that coroutines do
411	* not usually need a lot of stackspace.	449	* not usually need a lot of stackspace.
412	*/	450	*/
413	#if PREFER_PERL_FUNCTIONS	451	#if CORO_PREFER_PERL_FUNCTIONS
414	# define coro_init_stacks init_stacks	452	# define coro_init_stacks init_stacks
415	#else	453	#else
416	static void	454	static void
417	coro_init_stacks ()	455	coro_init_stacks (pTHX)
418	{	456	{
419	PL_curstackinfo = new_stackinfo(128, 1024/sizeof(PERL_CONTEXT));	457	PL_curstackinfo = new_stackinfo(128, 1024/sizeof(PERL_CONTEXT));
420	PL_curstackinfo->si_type = PERLSI_MAIN;	458	PL_curstackinfo->si_type = PERLSI_MAIN;
421	PL_curstack = PL_curstackinfo->si_stack;	459	PL_curstack = PL_curstackinfo->si_stack;
422	PL_mainstack = PL_curstack; /* remember in case we switch stacks */	460	PL_mainstack = PL_curstack; /* remember in case we switch stacks */
…		…
456		494
457	/*	495	/*
458	* destroy the stacks, the callchain etc...	496	* destroy the stacks, the callchain etc...
459	*/	497	*/
460	static void	498	static void
461	coro_destroy_stacks ()	499	coro_destroy_stacks (pTHX)
462	{	500	{
463	if (!IN_DESTRUCT)	501	if (!IN_DESTRUCT)
464	{	502	{
465	/* restore all saved variables and stuff */	503	/* restore all saved variables and stuff */
466	LEAVE_SCOPE (0);	504	LEAVE_SCOPE (0);
…		…
468		506
469	/* free all temporaries */	507	/* free all temporaries */
470	FREETMPS;	508	FREETMPS;
471	assert (PL_tmps_ix == -1);	509	assert (PL_tmps_ix == -1);
472		510
		511	/* unwind all extra stacks */
473	POPSTACK_TO (PL_mainstack);	512	POPSTACK_TO (PL_mainstack);
		513
		514	/* unwind main stack */
		515	dounwind (-1);
474	}	516	}
475		517
476	while (PL_curstackinfo->si_next)	518	while (PL_curstackinfo->si_next)
477	PL_curstackinfo = PL_curstackinfo->si_next;	519	PL_curstackinfo = PL_curstackinfo->si_next;
478		520
…		…
495	#if !PERL_VERSION_ATLEAST (5,9,0)	537	#if !PERL_VERSION_ATLEAST (5,9,0)
496	Safefree (PL_retstack);	538	Safefree (PL_retstack);
497	#endif	539	#endif
498	}	540	}
499		541
		542	/ coroutine stack handling **********************************************/
		543
500	static void	544	static void
501	setup_coro (struct coro *coro)	545	setup_coro (pTHX_ struct coro *coro)
502	{	546	{
503	/*	547	/*
504	* emulate part of the perl startup here.	548	* emulate part of the perl startup here.
505	*/	549	*/
506
507	coro_init_stacks ();	550	coro_init_stacks (aTHX);
508		551
509	PL_curcop = &PL_compiling;	552	PL_curcop = &PL_compiling;
510	PL_in_eval = EVAL_NULL;	553	PL_in_eval = EVAL_NULL;
		554	PL_comppad = 0;
511	PL_curpm = 0;	555	PL_curpm = 0;
512	PL_localizing = 0;	556	PL_localizing = 0;
513	PL_dirty = 0;	557	PL_dirty = 0;
514	PL_restartop = 0;	558	PL_restartop = 0;
515		559
…		…
523	Zero (&myop, 1, LOGOP);	567	Zero (&myop, 1, LOGOP);
524	myop.op_next = Nullop;	568	myop.op_next = Nullop;
525	myop.op_flags = OPf_WANT_VOID;	569	myop.op_flags = OPf_WANT_VOID;
526		570
527	PUSHMARK (SP);	571	PUSHMARK (SP);
528	XPUSHs ((SV *)get_cv ("Coro::State::_coro_init", FALSE));	572	XPUSHs (av_shift (GvAV (PL_defgv)));
529	PUTBACK;	573	PUTBACK;
530	PL_op = (OP *)&myop;	574	PL_op = (OP *)&myop;
531	PL_op = PL_ppaddr[OP_ENTERSUB](aTHX);	575	PL_op = PL_ppaddr[OP_ENTERSUB](aTHX);
532	SPAGAIN;	576	SPAGAIN;
533	}	577	}
534		578
535	ENTER; /* necessary e.g. for dounwind */	579	ENTER; /* necessary e.g. for dounwind */
536	}	580	}
537		581
538	static void	582	static void
539	free_coro_mortal ()	583	free_coro_mortal (pTHX)
540	{	584	{
541	if (coro_mortal)	585	if (coro_mortal)
542	{	586	{
543	SvREFCNT_dec (coro_mortal);	587	SvREFCNT_dec (coro_mortal);
544	coro_mortal = 0;	588	coro_mortal = 0;
545	}	589	}
546	}	590	}
547		591
548	/* inject a fake call to Coro::State::_cctx_init into the execution */	592	/* inject a fake call to Coro::State::_cctx_init into the execution */
		593	/* _cctx_init should be careful, as it could be called at almost any time */
		594	/* during execution of a perl program */
549	static void NOINLINE	595	static void NOINLINE
550	prepare_cctx (coro_cctx *cctx)	596	prepare_cctx (pTHX_ coro_cctx *cctx)
551	{	597	{
552	dSP;	598	dSP;
553	LOGOP myop;	599	LOGOP myop;
554		600
555	Zero (&myop, 1, LOGOP);	601	Zero (&myop, 1, LOGOP);
…		…
564	PL_op = (OP *)&myop;	610	PL_op = (OP *)&myop;
565	PL_op = PL_ppaddr[OP_ENTERSUB](aTHX);	611	PL_op = PL_ppaddr[OP_ENTERSUB](aTHX);
566	SPAGAIN;	612	SPAGAIN;
567	}	613	}
568		614
		615	/*
		616	* this is a _very_ stripped down perl interpreter ;)
		617	*/
569	static void	618	static void
570	coro_run (void *arg)	619	coro_run (void *arg)
571	{	620	{
		621	dTHX;
		622
572	/* coro_run is the alternative tail of transfer(), so unlock here. */	623	/* coro_run is the alternative tail of transfer(), so unlock here. */
573	UNLOCK;	624	UNLOCK;
574		625
575	/*
576	* this is a _very_ stripped down perl interpreter ;)
577	*/
578	PL_top_env = &PL_start_env;	626	PL_top_env = &PL_start_env;
579		627
580	/* inject call to cctx_init */	628	/* inject a fake subroutine call to cctx_init */
581	prepare_cctx ((coro_cctx *)arg);	629	prepare_cctx (aTHX_ (coro_cctx *)arg);
582		630
583	/* somebody will hit me for both perl_run and PL_restartop */	631	/* somebody or something will hit me for both perl_run and PL_restartop */
584	PL_restartop = PL_op;	632	PL_restartop = PL_op;
585	perl_run (PL_curinterp);	633	perl_run (PL_curinterp);
586		634
587	fputs ("FATAL: C coroutine fell over the edge of the world, aborting. Did you call exit in a coroutine?\n", stderr);	635	/*
588	abort ();	636	* If perl-run returns we assume exit() was being called or the coro
		637	* fell off the end, which seems to be the only valid (non-bug)
		638	* reason for perl_run to return. We try to exit by jumping to the
		639	* bootstrap-time "top" top_env, as we cannot restore the "main"
		640	* coroutine as Coro has no such concept
		641	*/
		642	PL_top_env = main_top_env;
		643	JMPENV_JUMP (2); /* I do not feel well about the hardcoded 2 at all */
589	}	644	}
590		645
591	static coro_cctx *	646	static coro_cctx *
592	cctx_new ()	647	cctx_new ()
593	{	648	{
594	coro_cctx *cctx;	649	coro_cctx *cctx;
		650	void *stack_start;
		651	size_t stack_size;
595		652
596	++cctx_count;	653	++cctx_count;
597		654
598	Newz (0, cctx, 1, coro_cctx);	655	Newz (0, cctx, 1, coro_cctx);
599		656
600	#if HAVE_MMAP	657	#if HAVE_MMAP
601		658
602	cctx->ssize = ((STACKSIZE * sizeof (long) + PAGESIZE - 1) / PAGESIZE + STACKGUARD) * PAGESIZE;	659	cctx->ssize = ((coro_stacksize * sizeof (long) + PAGESIZE - 1) / PAGESIZE + CORO_STACKGUARD) * PAGESIZE;
603	/* mmap supposedly does allocate-on-write for us */	660	/* mmap supposedly does allocate-on-write for us */
604	cctx->sptr = mmap (0, cctx->ssize, PROT_EXEC\|PROT_READ\|PROT_WRITE, MAP_PRIVATE\|MAP_ANONYMOUS, 0, 0);	661	cctx->sptr = mmap (0, cctx->ssize, PROT_EXEC\|PROT_READ\|PROT_WRITE, MAP_PRIVATE\|MAP_ANONYMOUS, 0, 0);
605		662
606	if (cctx->sptr == (void *)-1)	663	if (cctx->sptr != (void *)-1)
607	{
608	perror ("FATAL: unable to mmap stack for coroutine");
609	_exit (EXIT_FAILURE);
610	}	664	{
611
612	# if STACKGUARD	665	# if CORO_STACKGUARD
613	mprotect (cctx->sptr, STACKGUARD * PAGESIZE, PROT_NONE);	666	mprotect (cctx->sptr, CORO_STACKGUARD * PAGESIZE, PROT_NONE);
614	# endif	667	# endif
		668	stack_start = CORO_STACKGUARD * PAGESIZE + (char *)cctx->sptr;
		669	stack_size = cctx->ssize - CORO_STACKGUARD * PAGESIZE;
		670	cctx->mapped = 1;
		671	}
		672	else
		673	#endif
		674	{
		675	cctx->ssize = coro_stacksize * (long)sizeof (long);
		676	New (0, cctx->sptr, coro_stacksize, long);
615		677
616	#else
617
618	cctx->ssize = STACKSIZE * (long)sizeof (long);
619	New (0, cctx->sptr, STACKSIZE, long);
620
621	if (!cctx->sptr)	678	if (!cctx->sptr)
622	{	679	{
623	perror ("FATAL: unable to malloc stack for coroutine");	680	perror ("FATAL: unable to allocate stack for coroutine");
624	_exit (EXIT_FAILURE);	681	_exit (EXIT_FAILURE);
625	}	682	}
626		683
627	#endif	684	stack_start = cctx->sptr;
		685	stack_size = cctx->ssize;
		686	}
628		687
629	#if USE_VALGRIND	688	REGISTER_STACK (cctx, (char )stack_start, (char )stack_start + stack_size);
630	cctx->valgrind_id = VALGRIND_STACK_REGISTER (
631	STACKGUARD * PAGESIZE + (char *)cctx->sptr,
632	cctx->ssize + (char *)cctx->sptr
633	);
634	#endif
635
636	coro_create (&cctx->cctx, coro_run, (void *)cctx, cctx->sptr, cctx->ssize);	689	coro_create (&cctx->cctx, coro_run, (void *)cctx, stack_start, stack_size);
637		690
638	return cctx;	691	return cctx;
639	}	692	}
640		693
641	static void	694	static void
…		…
644	if (!cctx)	697	if (!cctx)
645	return;	698	return;
646		699
647	--cctx_count;	700	--cctx_count;
648		701
649	#if USE_VALGRIND	702	#if CORO_USE_VALGRIND
650	VALGRIND_STACK_DEREGISTER (cctx->valgrind_id);	703	VALGRIND_STACK_DEREGISTER (cctx->valgrind_id);
651	#endif	704	#endif
652		705
653	#if HAVE_MMAP	706	#if HAVE_MMAP
		707	if (cctx->mapped)
654	munmap (cctx->sptr, cctx->ssize);	708	munmap (cctx->sptr, cctx->ssize);
655	#else	709	else
		710	#endif
656	Safefree (cctx->sptr);	711	Safefree (cctx->sptr);
657	#endif
658		712
659	Safefree (cctx);	713	Safefree (cctx);
660	}	714	}
661		715
662	static coro_cctx *	716	static coro_cctx *
663	cctx_get ()	717	cctx_get (pTHX)
664	{	718	{
665	coro_cctx *cctx;
666
667	if (cctx_first)	719	while (cctx_first)
668	{	720	{
669	cctx = cctx_first;	721	coro_cctx *cctx = cctx_first;
670	cctx_first = cctx->next;	722	cctx_first = cctx->next;
671	--cctx_idle;	723	--cctx_idle;
		724
		725	if (cctx->ssize >= coro_stacksize)
		726	return cctx;
		727
		728	cctx_destroy (cctx);
672	}	729	}
673	else	730
674	{
675	cctx = cctx_new ();
676	PL_op = PL_op->op_next;	731	PL_op = PL_op->op_next;
677	}
678
679	return cctx;	732	return cctx_new ();
680	}	733	}
681		734
682	static void	735	static void
683	cctx_put (coro_cctx *cctx)	736	cctx_put (coro_cctx *cctx)
684	{	737	{
…		…
696	++cctx_idle;	749	++cctx_idle;
697	cctx->next = cctx_first;	750	cctx->next = cctx_first;
698	cctx_first = cctx;	751	cctx_first = cctx;
699	}	752	}
700		753
		754	/ coroutine switching ***************************************************/
		755
701	/* never call directly, always through the coro_state_transfer global variable */	756	/* never call directly, always through the coro_state_transfer global variable */
702	static void NOINLINE	757	static void NOINLINE
703	transfer (struct coro prev, struct coro next)	758	transfer (pTHX_ struct coro prev, struct coro next)
704	{	759	{
705	dSTACKLEVEL;	760	dSTACKLEVEL;
706		761
707	/* sometimes transfer is only called to set idle_sp */	762	/* sometimes transfer is only called to set idle_sp */
708	if (!next)	763	if (!next)
709	{	764	{
710	((coro_cctx *)prev)->idle_sp = STACKLEVEL;	765	((coro_cctx *)prev)->idle_sp = STACKLEVEL;
711	assert (((coro_cctx )prev)->top_env = PL_top_env); / just for the side effetc when assert is enabled */	766	assert (((coro_cctx )prev)->idle_te = PL_top_env); / just for the side-effect when asserts are enabled */
712	}	767	}
713	else if (prev != next)	768	else if (prev != next)
714	{	769	{
715	coro_cctx *prev__cctx;	770	coro_cctx *prev__cctx;
716		771
…		…
728	croak ("Coro::State::transfer called with non-running prev Coro::State, but can only transfer from running states");	783	croak ("Coro::State::transfer called with non-running prev Coro::State, but can only transfer from running states");
729		784
730	if (next->flags & CF_RUNNING)	785	if (next->flags & CF_RUNNING)
731	croak ("Coro::State::transfer called with running next Coro::State, but can only transfer to inactive states");	786	croak ("Coro::State::transfer called with running next Coro::State, but can only transfer to inactive states");
732		787
		788	if (next->flags & CF_DESTROYED)
		789	croak ("Coro::State::transfer called with destroyed next Coro::State, but can only transfer to inactive states");
		790
733	prev->flags &= ~CF_RUNNING;	791	prev->flags &= ~CF_RUNNING;
734	next->flags \|= CF_RUNNING;	792	next->flags \|= CF_RUNNING;
735		793
736	LOCK;	794	LOCK;
737		795
738	if (next->flags & CF_NEW)	796	if (next->flags & CF_NEW)
739	{	797	{
740	/* need to start coroutine */	798	/* need to start coroutine */
741	next->flags &= ~CF_NEW;	799	next->flags &= ~CF_NEW;
742	/* first get rid of the old state */	800	/* first get rid of the old state */
743	save_perl (prev);	801	save_perl (aTHX_ prev);
744	/* setup coroutine call */	802	/* setup coroutine call */
745	setup_coro (next);	803	setup_coro (aTHX_ next);
746	/* need a new stack */	804	/* need a new stack */
747	assert (!next->cctx);	805	assert (!next->cctx);
748	}	806	}
749	else	807	else
750	{	808	{
751	/* coroutine already started */	809	/* coroutine already started */
752	save_perl (prev);	810	save_perl (aTHX_ prev);
753	load_perl (next);	811	load_perl (aTHX_ next);
754	}	812	}
755		813
756	prev__cctx = prev->cctx;	814	prev__cctx = prev->cctx;
757		815
758	/* possibly "free" the cctx */	816	/* possibly "free" the cctx */
759	if (prev__cctx->idle_sp == STACKLEVEL)	817	if (prev__cctx->idle_sp == STACKLEVEL)
760	{	818	{
761	/* I assume that STACKLEVEL is a stronger indicator than PL_top_env changes */	819	/* I assume that STACKLEVEL is a stronger indicator than PL_top_env changes */
762	assert (PL_top_env == prev__cctx->top_env);	820	assert (("ERROR: current top_env must equal previous top_env", PL_top_env == prev__cctx->idle_te));
763		821
764	prev->cctx = 0;	822	prev->cctx = 0;
765		823
766	cctx_put (prev__cctx);	824	cctx_put (prev__cctx);
767	prev__cctx->inuse = 0;	825	prev__cctx->inuse = 0;
768	}	826	}
769		827
770	if (!next->cctx)	828	if (!next->cctx)
771	{	829	{
772	next->cctx = cctx_get ();	830	next->cctx = cctx_get (aTHX);
773	assert (!next->cctx->inuse);	831	assert (!next->cctx->inuse);
774	next->cctx->inuse = 1;	832	next->cctx->inuse = 1;
775	}	833	}
776		834
777	if (prev__cctx != next->cctx)	835	if (prev__cctx != next->cctx)
…		…
779	prev__cctx->top_env = PL_top_env;	837	prev__cctx->top_env = PL_top_env;
780	PL_top_env = next->cctx->top_env;	838	PL_top_env = next->cctx->top_env;
781	coro_transfer (&prev__cctx->cctx, &next->cctx->cctx);	839	coro_transfer (&prev__cctx->cctx, &next->cctx->cctx);
782	}	840	}
783		841
784	free_coro_mortal ();	842	free_coro_mortal (aTHX);
785
786	UNLOCK;	843	UNLOCK;
787	}	844	}
788	}	845	}
789		846
790	struct transfer_args	847	struct transfer_args
791	{	848	{
792	struct coro prev, next;	849	struct coro prev, next;
793	};	850	};
794		851
795	#define TRANSFER(ta) transfer ((ta).prev, (ta).next)	852	#define TRANSFER(ta) transfer (aTHX_ (ta).prev, (ta).next)
796		853
		854	/ high level stuff ******************************************************/
		855
797	static void	856	static int
798	coro_state_destroy (struct coro *coro)	857	coro_state_destroy (pTHX_ struct coro *coro)
799	{	858	{
800	if (coro->refcnt--)	859	if (coro->flags & CF_DESTROYED)
801	return;	860	return 0;
		861
		862	coro->flags \|= CF_DESTROYED;
		863
		864	if (coro->flags & CF_READY)
		865	{
		866	/* reduce nready, as destroying a ready coro effectively unreadies it */
		867	/* alternative: look through all ready queues and remove the coro */
		868	LOCK;
		869	--coro_nready;
		870	UNLOCK;
		871	}
		872	else
		873	coro->flags \|= CF_READY; /* make sure it is NOT put into the readyqueue */
802		874
803	if (coro->mainstack && coro->mainstack != main_mainstack)	875	if (coro->mainstack && coro->mainstack != main_mainstack)
804	{	876	{
805	struct coro temp;	877	struct coro temp;
		878
		879	assert (!(coro->flags & CF_RUNNING));
		880
806	Zero (&temp, 1, struct coro);	881	Zero (&temp, 1, struct coro);
807	temp.save = CORO_SAVE_ALL;	882	temp.save = CORO_SAVE_DEF;
808		883
809	if (coro->flags & CF_RUNNING)	884	if (coro->flags & CF_RUNNING)
810	croak ("FATAL: tried to destroy currently running coroutine");	885	croak ("FATAL: tried to destroy currently running coroutine");
811		886
812	save_perl (&temp);	887	save_perl (aTHX_ &temp);
813	load_perl (coro);	888	load_perl (aTHX_ coro);
814		889
815	coro_destroy_stacks ();	890	coro_destroy_stacks (aTHX);
816		891
817	load_perl (&temp); /* this will get rid of defsv etc.. */	892	load_perl (aTHX_ &temp); /* this will get rid of defsv etc.. */
818		893
819	coro->mainstack = 0;	894	coro->mainstack = 0;
820	}	895	}
821		896
822	cctx_destroy (coro->cctx);	897	cctx_destroy (coro->cctx);
823	SvREFCNT_dec (coro->args);	898	SvREFCNT_dec (coro->args);
824	Safefree (coro);	899
		900	return 1;
825	}	901	}
826		902
827	static int	903	static int
828	coro_state_clear (pTHX_ SV sv, MAGIC mg)	904	coro_state_free (pTHX_ SV sv, MAGIC mg)
829	{	905	{
830	struct coro coro = (struct coro )mg->mg_ptr;	906	struct coro coro = (struct coro )mg->mg_ptr;
831	mg->mg_ptr = 0;	907	mg->mg_ptr = 0;
832		908
		909	if (--coro->refcnt < 0)
		910	{
833	coro_state_destroy (coro);	911	coro_state_destroy (aTHX_ coro);
		912	Safefree (coro);
		913	}
834		914
835	return 0;	915	return 0;
836	}	916	}
837		917
838	static int	918	static int
…		…
845	return 0;	925	return 0;
846	}	926	}
847		927
848	static MGVTBL coro_state_vtbl = {	928	static MGVTBL coro_state_vtbl = {
849	0, 0, 0, 0,	929	0, 0, 0, 0,
850	coro_state_clear,	930	coro_state_free,
851	0,	931	0,
852	#ifdef MGf_DUP	932	#ifdef MGf_DUP
853	coro_state_dup,	933	coro_state_dup,
854	#else	934	#else
855	# define MGf_DUP 0	935	# define MGf_DUP 0
856	#endif	936	#endif
857	};	937	};
858		938
859	static struct coro *	939	static struct coro *
860	SvSTATE (SV *coro)	940	SvSTATE_ (pTHX_ SV *coro)
861	{	941	{
862	HV *stash;	942	HV *stash;
863	MAGIC *mg;	943	MAGIC *mg;
864		944
865	if (SvROK (coro))	945	if (SvROK (coro))
…		…
871	/* very slow, but rare, check */	951	/* very slow, but rare, check */
872	if (!sv_derived_from (sv_2mortal (newRV_inc (coro)), "Coro::State"))	952	if (!sv_derived_from (sv_2mortal (newRV_inc (coro)), "Coro::State"))
873	croak ("Coro::State object required");	953	croak ("Coro::State object required");
874	}	954	}
875		955
876	mg = SvMAGIC (coro);	956	mg = CORO_MAGIC (coro);
877	assert (mg->mg_type == PERL_MAGIC_ext);
878	return (struct coro *)mg->mg_ptr;	957	return (struct coro *)mg->mg_ptr;
879	}	958	}
880		959
		960	#define SvSTATE(sv) SvSTATE_ (aTHX_ (sv))
		961
881	static void	962	static void
882	prepare_transfer (struct transfer_args ta, SV prev_sv, SV *next_sv)	963	prepare_transfer (pTHX_ struct transfer_args ta, SV prev_sv, SV *next_sv)
883	{	964	{
884	ta->prev = SvSTATE (prev_sv);	965	ta->prev = SvSTATE (prev_sv);
885	ta->next = SvSTATE (next_sv);	966	ta->next = SvSTATE (next_sv);
886	}	967	}
887		968
888	static void	969	static void
889	api_transfer (SV prev_sv, SV next_sv)	970	api_transfer (SV prev_sv, SV next_sv)
890	{	971	{
		972	dTHX;
891	struct transfer_args ta;	973	struct transfer_args ta;
892		974
893	prepare_transfer (&ta, prev_sv, next_sv);	975	prepare_transfer (aTHX_ &ta, prev_sv, next_sv);
894	TRANSFER (ta);	976	TRANSFER (ta);
895	}	977	}
896		978
897	static int	979	static int
898	api_save (SV *coro_sv, int new_save)	980	api_save (SV *coro_sv, int new_save)
899	{	981	{
		982	dTHX;
900	struct coro *coro = SvSTATE (coro_sv);	983	struct coro *coro = SvSTATE (coro_sv);
901	int old_save = coro->save;	984	int old_save = coro->save;
902		985
903	if (new_save >= 0)	986	if (new_save >= 0)
904	coro->save = new_save;	987	coro->save = new_save;
…		…
906	return old_save;	989	return old_save;
907	}	990	}
908		991
909	/ Coro ******************************************************************/	992	/ Coro ******************************************************************/
910		993
911	#define PRIO_MAX 3
912	#define PRIO_HIGH 1
913	#define PRIO_NORMAL 0
914	#define PRIO_LOW -1
915	#define PRIO_IDLE -3
916	#define PRIO_MIN -4
917
918	/* for Coro.pm */
919	static SV *coro_current;
920	static AV *coro_ready [PRIO_MAX-PRIO_MIN+1];
921	static int coro_nready;
922
923	static void	994	static void
924	coro_enq (SV *coro_sv)	995	coro_enq (pTHX_ SV *coro_sv)
925	{	996	{
926	av_push (coro_ready [SvSTATE (coro_sv)->prio - PRIO_MIN], coro_sv);	997	av_push (coro_ready [SvSTATE (coro_sv)->prio - PRIO_MIN], coro_sv);
927	coro_nready++;
928	}	998	}
929		999
930	static SV *	1000	static SV *
931	coro_deq (int min_prio)	1001	coro_deq (pTHX_ int min_prio)
932	{	1002	{
933	int prio = PRIO_MAX - PRIO_MIN;	1003	int prio = PRIO_MAX - PRIO_MIN;
934		1004
935	min_prio -= PRIO_MIN;	1005	min_prio -= PRIO_MIN;
936	if (min_prio < 0)	1006	if (min_prio < 0)
937	min_prio = 0;	1007	min_prio = 0;
938		1008
939	for (prio = PRIO_MAX - PRIO_MIN + 1; --prio >= min_prio; )	1009	for (prio = PRIO_MAX - PRIO_MIN + 1; --prio >= min_prio; )
940	if (AvFILLp (coro_ready [prio]) >= 0)	1010	if (AvFILLp (coro_ready [prio]) >= 0)
941	{
942	coro_nready--;
943	return av_shift (coro_ready [prio]);	1011	return av_shift (coro_ready [prio]);
944	}
945		1012
946	return 0;	1013	return 0;
947	}	1014	}
948		1015
949	static int	1016	static int
950	api_ready (SV *coro_sv)	1017	api_ready (SV *coro_sv)
951	{	1018	{
		1019	dTHX;
952	struct coro *coro;	1020	struct coro *coro;
953		1021
954	if (SvROK (coro_sv))	1022	if (SvROK (coro_sv))
955	coro_sv = SvRV (coro_sv);	1023	coro_sv = SvRV (coro_sv);
956		1024
…		…
960	return 0;	1028	return 0;
961		1029
962	coro->flags \|= CF_READY;	1030	coro->flags \|= CF_READY;
963		1031
964	LOCK;	1032	LOCK;
965	coro_enq (SvREFCNT_inc (coro_sv));	1033	coro_enq (aTHX_ SvREFCNT_inc (coro_sv));
		1034	++coro_nready;
966	UNLOCK;	1035	UNLOCK;
967		1036
968	return 1;	1037	return 1;
969	}	1038	}
970		1039
971	static int	1040	static int
972	api_is_ready (SV *coro_sv)	1041	api_is_ready (SV *coro_sv)
973	{	1042	{
		1043	dTHX;
974	return !!(SvSTATE (coro_sv)->flags & CF_READY);	1044	return !!(SvSTATE (coro_sv)->flags & CF_READY);
975	}	1045	}
976		1046
977	static void	1047	static void
978	prepare_schedule (struct transfer_args *ta)	1048	prepare_schedule (pTHX_ struct transfer_args *ta)
979	{	1049	{
980	SV prev, next;	1050	SV prev_sv, next_sv;
981		1051
982	for (;;)	1052	for (;;)
983	{	1053	{
984	LOCK;	1054	LOCK;
985	next = coro_deq (PRIO_MIN);	1055	next_sv = coro_deq (aTHX_ PRIO_MIN);
		1056
		1057	/* nothing to schedule: call the idle handler */
		1058	if (!next_sv)
		1059	{
		1060	dSP;
		1061	UNLOCK;
		1062
		1063	ENTER;
		1064	SAVETMPS;
		1065
		1066	PUSHMARK (SP);
		1067	PUTBACK;
		1068	call_sv (get_sv ("Coro::idle", FALSE), G_DISCARD);
		1069
		1070	FREETMPS;
		1071	LEAVE;
		1072	continue;
		1073	}
		1074
		1075	ta->next = SvSTATE (next_sv);
		1076
		1077	/* cannot transfer to destroyed coros, skip and look for next */
		1078	if (ta->next->flags & CF_DESTROYED)
		1079	{
		1080	UNLOCK;
		1081	SvREFCNT_dec (next_sv);
		1082	/* coro_nready is already taken care of by destroy */
		1083	continue;
		1084	}
		1085
		1086	--coro_nready;
986	UNLOCK;	1087	UNLOCK;
987
988	if (next)
989	break;	1088	break;
990
991	{
992	dSP;
993
994	ENTER;
995	SAVETMPS;
996
997	PUSHMARK (SP);
998	PUTBACK;
999	call_sv (get_sv ("Coro::idle", FALSE), G_DISCARD);
1000
1001	FREETMPS;
1002	LEAVE;
1003	}	1089	}
1004	}
1005
1006	prev = SvRV (coro_current);
1007	SvRV_set (coro_current, next);
1008		1090
1009	/* free this only after the transfer */	1091	/* free this only after the transfer */
1010	LOCK;	1092	prev_sv = SvRV (coro_current);
1011	free_coro_mortal ();	1093	SvRV_set (coro_current, next_sv);
1012	UNLOCK;
1013	coro_mortal = prev;
1014
1015	assert (!SvROK(prev));//D
1016	assert (!SvROK(next));//D
1017
1018	ta->prev = SvSTATE (prev);	1094	ta->prev = SvSTATE (prev_sv);
1019	ta->next = SvSTATE (next);
1020		1095
1021	assert (ta->next->flags & CF_READY);	1096	assert (ta->next->flags & CF_READY);
1022	ta->next->flags &= ~CF_READY;	1097	ta->next->flags &= ~CF_READY;
1023	}
1024		1098
		1099	LOCK;
		1100	free_coro_mortal (aTHX);
		1101	coro_mortal = prev_sv;
		1102	UNLOCK;
		1103	}
		1104
1025	static void	1105	static void
1026	prepare_cede (struct transfer_args *ta)	1106	prepare_cede (pTHX_ struct transfer_args *ta)
1027	{	1107	{
1028	api_ready (coro_current);	1108	api_ready (coro_current);
1029
1030	prepare_schedule (ta);	1109	prepare_schedule (aTHX_ ta);
		1110	}
		1111
		1112	static int
		1113	prepare_cede_notself (pTHX_ struct transfer_args *ta)
		1114	{
		1115	if (coro_nready)
		1116	{
		1117	SV *prev = SvRV (coro_current);
		1118	prepare_schedule (aTHX_ ta);
		1119	api_ready (prev);
		1120	return 1;
		1121	}
		1122	else
		1123	return 0;
1031	}	1124	}
1032		1125
1033	static void	1126	static void
1034	api_schedule (void)	1127	api_schedule (void)
1035	{	1128	{
		1129	dTHX;
1036	struct transfer_args ta;	1130	struct transfer_args ta;
1037		1131
1038	prepare_schedule (&ta);	1132	prepare_schedule (aTHX_ &ta);
1039	TRANSFER (ta);	1133	TRANSFER (ta);
1040	}	1134	}
1041		1135
1042	static void	1136	static int
1043	api_cede (void)	1137	api_cede (void)
1044	{	1138	{
		1139	dTHX;
1045	struct transfer_args ta;	1140	struct transfer_args ta;
1046		1141
1047	prepare_cede (&ta);	1142	prepare_cede (aTHX_ &ta);
		1143
		1144	if (ta.prev != ta.next)
		1145	{
1048	TRANSFER (ta);	1146	TRANSFER (ta);
		1147	return 1;
		1148	}
		1149	else
		1150	return 0;
		1151	}
		1152
		1153	static int
		1154	api_cede_notself (void)
		1155	{
		1156	dTHX;
		1157	struct transfer_args ta;
		1158
		1159	if (prepare_cede_notself (aTHX_ &ta))
		1160	{
		1161	TRANSFER (ta);
		1162	return 1;
		1163	}
		1164	else
		1165	return 0;
1049	}	1166	}
1050		1167
1051	MODULE = Coro::State PACKAGE = Coro::State	1168	MODULE = Coro::State PACKAGE = Coro::State
1052		1169
1053	PROTOTYPES: DISABLE	1170	PROTOTYPES: DISABLE
…		…
1063		1180
1064	newCONSTSUB (coro_state_stash, "SAVE_DEFAV", newSViv (CORO_SAVE_DEFAV));	1181	newCONSTSUB (coro_state_stash, "SAVE_DEFAV", newSViv (CORO_SAVE_DEFAV));
1065	newCONSTSUB (coro_state_stash, "SAVE_DEFSV", newSViv (CORO_SAVE_DEFSV));	1182	newCONSTSUB (coro_state_stash, "SAVE_DEFSV", newSViv (CORO_SAVE_DEFSV));
1066	newCONSTSUB (coro_state_stash, "SAVE_ERRSV", newSViv (CORO_SAVE_ERRSV));	1183	newCONSTSUB (coro_state_stash, "SAVE_ERRSV", newSViv (CORO_SAVE_ERRSV));
1067	newCONSTSUB (coro_state_stash, "SAVE_IRSSV", newSViv (CORO_SAVE_IRSSV));	1184	newCONSTSUB (coro_state_stash, "SAVE_IRSSV", newSViv (CORO_SAVE_IRSSV));
		1185	newCONSTSUB (coro_state_stash, "SAVE_DEFFH", newSViv (CORO_SAVE_DEFFH));
		1186	newCONSTSUB (coro_state_stash, "SAVE_DEF", newSViv (CORO_SAVE_DEF));
1068	newCONSTSUB (coro_state_stash, "SAVE_ALL", newSViv (CORO_SAVE_ALL));	1187	newCONSTSUB (coro_state_stash, "SAVE_ALL", newSViv (CORO_SAVE_ALL));
1069		1188
1070	main_mainstack = PL_mainstack;	1189	main_mainstack = PL_mainstack;
		1190	main_top_env = PL_top_env;
		1191
		1192	while (main_top_env->je_prev)
		1193	main_top_env = main_top_env->je_prev;
1071		1194
1072	coroapi.ver = CORO_API_VERSION;	1195	coroapi.ver = CORO_API_VERSION;
1073	coroapi.transfer = api_transfer;	1196	coroapi.transfer = api_transfer;
1074		1197
1075	assert (("PRIO_NORMAL must be 0", !PRIO_NORMAL));	1198	assert (("PRIO_NORMAL must be 0", !PRIO_NORMAL));
…		…
1083	HV *hv;	1206	HV *hv;
1084	int i;	1207	int i;
1085		1208
1086	Newz (0, coro, 1, struct coro);	1209	Newz (0, coro, 1, struct coro);
1087	coro->args = newAV ();	1210	coro->args = newAV ();
1088	coro->save = CORO_SAVE_ALL;	1211	coro->save = CORO_SAVE_DEF;
1089	coro->flags = CF_NEW;	1212	coro->flags = CF_NEW;
1090		1213
1091	hv = newHV ();	1214	hv = newHV ();
1092	sv_magicext ((SV )hv, 0, PERL_MAGIC_ext, &coro_state_vtbl, (char )coro, 0)->mg_flags \|= MGf_DUP;	1215	sv_magicext ((SV )hv, 0, PERL_MAGIC_ext, &coro_state_vtbl, (char )coro, 0)->mg_flags \|= MGf_DUP;
1093	RETVAL = sv_bless (newRV_noinc ((SV *)hv), gv_stashpv (klass, 1));	1216	RETVAL = sv_bless (newRV_noinc ((SV *)hv), gv_stashpv (klass, 1));
…		…
1103	CODE:	1226	CODE:
1104	RETVAL = api_save (coro, new_save);	1227	RETVAL = api_save (coro, new_save);
1105	OUTPUT:	1228	OUTPUT:
1106	RETVAL	1229	RETVAL
1107		1230
		1231	int
		1232	save_also (SV *coro_sv, int save_also)
		1233	CODE:
		1234	{
		1235	struct coro *coro = SvSTATE (coro_sv);
		1236	RETVAL = coro->save;
		1237	coro->save \|= save_also;
		1238	}
		1239	OUTPUT:
		1240	RETVAL
		1241
1108	void	1242	void
1109	_set_stacklevel (...)	1243	_set_stacklevel (...)
1110	ALIAS:	1244	ALIAS:
1111	Coro::State::transfer = 1	1245	Coro::State::transfer = 1
1112	Coro::schedule = 2	1246	Coro::schedule = 2
1113	Coro::cede = 3	1247	Coro::cede = 3
		1248	Coro::cede_notself = 4
1114	CODE:	1249	CODE:
1115	{	1250	{
1116	struct transfer_args ta;	1251	struct transfer_args ta;
1117		1252
1118	switch (ix)	1253	switch (ix)
…		…
1124		1259
1125	case 1:	1260	case 1:
1126	if (items != 2)	1261	if (items != 2)
1127	croak ("Coro::State::transfer (prev,next) expects two arguments, not %d", items);	1262	croak ("Coro::State::transfer (prev,next) expects two arguments, not %d", items);
1128		1263
1129	prepare_transfer (&ta, ST (0), ST (1));	1264	prepare_transfer (aTHX_ &ta, ST (0), ST (1));
1130	break;	1265	break;
1131		1266
1132	case 2:	1267	case 2:
1133	prepare_schedule (&ta);	1268	prepare_schedule (aTHX_ &ta);
1134	break;	1269	break;
1135		1270
1136	case 3:	1271	case 3:
1137	prepare_cede (&ta);	1272	prepare_cede (aTHX_ &ta);
		1273	break;
		1274
		1275	case 4:
		1276	if (!prepare_cede_notself (aTHX_ &ta))
		1277	XSRETURN_EMPTY;
		1278
1138	break;	1279	break;
1139	}	1280	}
1140		1281
		1282	BARRIER;
1141	TRANSFER (ta);	1283	TRANSFER (ta);
1142	}
1143		1284
1144	void	1285	if (GIMME_V != G_VOID && ta.next != ta.prev)
1145	_clone_state_from (SV dst, SV src)	1286	XSRETURN_YES;
		1287	}
		1288
		1289	bool
		1290	_destroy (SV *coro_sv)
1146	CODE:	1291	CODE:
1147	{	1292	RETVAL = coro_state_destroy (aTHX_ SvSTATE (coro_sv));
1148	struct coro *coro_src = SvSTATE (src);	1293	OUTPUT:
1149		1294	RETVAL
1150	sv_unmagic (SvRV (dst), PERL_MAGIC_ext);
1151
1152	++coro_src->refcnt;
1153	sv_magicext (SvRV (dst), 0, PERL_MAGIC_ext, &coro_state_vtbl, (char *)coro_src, 0)->mg_flags \|= MGf_DUP;
1154	}
1155		1295
1156	void	1296	void
1157	_exit (code)	1297	_exit (code)
1158	int code	1298	int code
1159	PROTOTYPE: $	1299	PROTOTYPE: $
1160	CODE:	1300	CODE:
1161	_exit (code);	1301	_exit (code);
1162		1302
1163	int	1303	int
		1304	cctx_stacksize (int new_stacksize = 0)
		1305	CODE:
		1306	RETVAL = coro_stacksize;
		1307	if (new_stacksize)
		1308	coro_stacksize = new_stacksize;
		1309	OUTPUT:
		1310	RETVAL
		1311
		1312	int
1164	cctx_count ()	1313	cctx_count ()
1165	CODE:	1314	CODE:
1166	RETVAL = cctx_count;	1315	RETVAL = cctx_count;
1167	OUTPUT:	1316	OUTPUT:
1168	RETVAL	1317	RETVAL
…		…
1196	coro_ready[i] = newAV ();	1345	coro_ready[i] = newAV ();
1197		1346
1198	{	1347	{
1199	SV *sv = perl_get_sv("Coro::API", 1);	1348	SV *sv = perl_get_sv("Coro::API", 1);
1200		1349
1201	coroapi.schedule = api_schedule;	1350	coroapi.schedule = api_schedule;
1202	coroapi.save = api_save;	1351	coroapi.save = api_save;
1203	coroapi.cede = api_cede;	1352	coroapi.cede = api_cede;
		1353	coroapi.cede_notself = api_cede_notself;
1204	coroapi.ready = api_ready;	1354	coroapi.ready = api_ready;
1205	coroapi.is_ready = api_is_ready;	1355	coroapi.is_ready = api_is_ready;
1206	coroapi.nready = &coro_nready;	1356	coroapi.nready = &coro_nready;
1207	coroapi.current = coro_current;	1357	coroapi.current = coro_current;
1208		1358
1209	GCoroAPI = &coroapi;	1359	GCoroAPI = &coroapi;
1210	sv_setiv (sv, (IV)&coroapi);	1360	sv_setiv (sv, (IV)&coroapi);
1211	SvREADONLY_on (sv);	1361	SvREADONLY_on (sv);
1212	}	1362	}

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Comparing Coro/Coro/State.xs (file contents): Revision 1.130 by root, Mon Dec 25 13:25:55 2006 UTC vs. Revision 1.150 by root, Wed Jun 13 21:04:48 2007 UTC

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Comparing Coro/Coro/State.xs (file contents):
Revision 1.130 by root, Mon Dec 25 13:25:55 2006 UTC vs.
Revision 1.150 by root, Wed Jun 13 21:04:48 2007 UTC