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

Comparing Coro/Coro/State.xs (file contents):
Revision 1.109 by root, Mon Nov 27 18:45:29 2006 UTC vs.
Revision 1.142 by root, Tue Feb 13 19:21:29 2007 UTC

…		…
4	#include "perl.h"	4	#include "perl.h"
5	#include "XSUB.h"	5	#include "XSUB.h"
6		6
7	#include "patchlevel.h"	7	#include "patchlevel.h"
8		8
9	#if USE_VALGRIND
10	# include <valgrind/valgrind.h>
11	#endif
12
13	#define PERL_VERSION_ATLEAST(a,b,c) \
14	(PERL_REVISION > (a) \
15	\|\| (PERL_REVISION == (a) \
16	&& (PERL_VERSION > (b) \
17	\|\| (PERL_VERSION == (b) && PERLSUBVERSION >= (c)))))
18
19	#if !PERL_VERSION_ATLEAST (5,6,0)
20	# ifndef PL_ppaddr
21	# define PL_ppaddr ppaddr
22	# endif
23	# ifndef call_sv
24	# define call_sv perl_call_sv
25	# endif
26	# ifndef get_sv
27	# define get_sv perl_get_sv
28	# endif
29	# ifndef get_cv
30	# define get_cv perl_get_cv
31	# endif
32	# ifndef IS_PADGV
33	# define IS_PADGV(v) 0
34	# endif
35	# ifndef IS_PADCONST
36	# define IS_PADCONST(v) 0
37	# endif
38	#endif
39
40	#include <stdio.h>	9	#include <stdio.h>
41	#include <errno.h>	10	#include <errno.h>
42		11	#include <assert.h>
43	#if !__i386 && !__x86_64 && !__powerpc && !__m68k && !__alpha && !__mips && !__sparc64
44	# undef STACKGUARD
45	#endif
46
47	#ifndef STACKGUARD
48	# define STACKGUARD 0
49	#endif
50		12
51	#ifdef HAVE_MMAP	13	#ifdef HAVE_MMAP
52	# include <unistd.h>	14	# include <unistd.h>
53	# include <sys/mman.h>	15	# include <sys/mman.h>
54	# ifndef MAP_ANONYMOUS	16	# ifndef MAP_ANONYMOUS
…		…
69	#else	31	#else
70	# define PAGESIZE 0	32	# define PAGESIZE 0
71	# define BOOT_PAGESIZE (void)0	33	# define BOOT_PAGESIZE (void)0
72	#endif	34	#endif
73		35
		36	#if USE_VALGRIND
		37	# include <valgrind/valgrind.h>
		38	# define REGISTER_STACK(cctx,start,end) (cctx)->valgrind_id = VALGRIND_STACK_REGISTER ((start), (end))
		39	#else
		40	# define REGISTER_STACK(cctx,start,end)
		41	#endif
		42
		43	/* the maximum number of idle cctx that will be pooled */
		44	#define MAX_IDLE_CCTX 8
		45
		46	#define PERL_VERSION_ATLEAST(a,b,c) \
		47	(PERL_REVISION > (a) \
		48	\|\| (PERL_REVISION == (a) \
		49	&& (PERL_VERSION > (b) \
		50	\|\| (PERL_VERSION == (b) && PERLSUBVERSION >= (c)))))
		51
		52	#if !PERL_VERSION_ATLEAST (5,6,0)
		53	# ifndef PL_ppaddr
		54	# define PL_ppaddr ppaddr
		55	# endif
		56	# ifndef call_sv
		57	# define call_sv perl_call_sv
		58	# endif
		59	# ifndef get_sv
		60	# define get_sv perl_get_sv
		61	# endif
		62	# ifndef get_cv
		63	# define get_cv perl_get_cv
		64	# endif
		65	# ifndef IS_PADGV
		66	# define IS_PADGV(v) 0
		67	# endif
		68	# ifndef IS_PADCONST
		69	# define IS_PADCONST(v) 0
		70	# endif
		71	#endif
		72
		73	/* 5.8.7 */
		74	#ifndef SvRV_set
		75	# define SvRV_set(s,v) SvRV(s) = (v)
		76	#endif
		77
		78	#if !__i386 && !__x86_64 && !__powerpc && !__m68k && !__alpha && !__mips && !__sparc64
		79	# undef STACKGUARD
		80	#endif
		81
		82	#ifndef STACKGUARD
		83	# define STACKGUARD 0
		84	#endif
		85
		86	/* prefer perl internal functions over our own? */
		87	#ifndef PREFER_PERL_FUNCTIONS
		88	# define PREFER_PERL_FUNCTIONS 0
		89	#endif
		90
74	/* The next macro should declare a variable stacklevel that contains and approximation	91	/* The next macro should declare a variable stacklevel that contains and approximation
75	* to the current C stack pointer. Its property is that it changes with each call	92	* to the current C stack pointer. Its property is that it changes with each call
76	* and should be unique. */	93	* and should be unique. */
77	#define dSTACKLEVEL int stacklevel	94	#define dSTACKLEVEL int stacklevel
78	#define STACKLEVEL ((void *)&stacklevel)	95	#define STACKLEVEL ((void *)&stacklevel)
79		96
80	#define IN_DESTRUCT (PL_main_cv == Nullcv)	97	#define IN_DESTRUCT (PL_main_cv == Nullcv)
81		98
82	#if __GNUC__ >= 3	99	#if __GNUC__ >= 3
83	# define attribute(x) __attribute__(x)	100	# define attribute(x) __attribute__(x)
		101	# define BARRIER __asm__ __volatile__ ("" : : : "memory")
84	#else	102	#else
85	# define attribute(x)	103	# define attribute(x)
		104	# define BARRIER
86	#endif	105	#endif
87		106
88	#define NOINLINE attribute ((noinline))	107	#define NOINLINE attribute ((noinline))
89		108
90	#include "CoroAPI.h"	109	#include "CoroAPI.h"
91
92	#define TRANSFER_SET_STACKLEVEL 0x8bfbfbfb /* magic cookie */
93		110
94	#ifdef USE_ITHREADS	111	#ifdef USE_ITHREADS
95	static perl_mutex coro_mutex;	112	static perl_mutex coro_mutex;
96	# define LOCK do { MUTEX_LOCK (&coro_mutex); } while (0)	113	# define LOCK do { MUTEX_LOCK (&coro_mutex); } while (0)
97	# define UNLOCK do { MUTEX_UNLOCK (&coro_mutex); } while (0)	114	# define UNLOCK do { MUTEX_UNLOCK (&coro_mutex); } while (0)
98	#else	115	#else
99	# define LOCK (void)0	116	# define LOCK (void)0
100	# define UNLOCK (void)0	117	# define UNLOCK (void)0
101	#endif	118	#endif
102		119
		120	/* helper storage struct for Coro::AIO */
		121	struct io_state
		122	{
		123	int errorno;
		124	I32 laststype;
		125	int laststatval;
		126	Stat_t statcache;
		127	};
		128
103	static struct CoroAPI coroapi;	129	static struct CoroAPI coroapi;
104	static AV main_mainstack; / used to differentiate between $main and others */	130	static AV main_mainstack; / used to differentiate between $main and others */
105	static HV coro_state_stash, coro_stash;	131	static HV coro_state_stash, coro_stash;
106	static SV coro_mortal; / will be freed after next transfer */	132	static SV coro_mortal; / will be freed after next transfer */
107		133
…		…
112	typedef struct coro_cctx {	138	typedef struct coro_cctx {
113	struct coro_cctx *next;	139	struct coro_cctx *next;
114		140
115	/* the stack */	141	/* the stack */
116	void *sptr;	142	void *sptr;
117	long ssize; /* positive == mmap, otherwise malloc */	143	ssize_t ssize; /* positive == mmap, otherwise malloc */
118		144
119	/* cpu state */	145	/* cpu state */
120	void idle_sp; / sp of top-level transfer/schedule/cede call */	146	void idle_sp; / sp of top-level transfer/schedule/cede call */
		147	JMPENV idle_te; / same as idle_sp, but for top_env, TODO: remove once stable */
121	JMPENV *top_env;	148	JMPENV *top_env;
122	coro_context cctx;	149	coro_context cctx;
123		150
		151	int inuse;
		152
124	#if USE_VALGRIND	153	#if USE_VALGRIND
125	int valgrind_id;	154	int valgrind_id;
126	#endif	155	#endif
127	} coro_cctx;	156	} coro_cctx;
		157
		158	enum {
		159	CF_RUNNING = 0x0001, /* coroutine is running */
		160	CF_READY = 0x0002, /* coroutine is ready */
		161	CF_NEW = 0x0004, /* has never been switched to */
		162	CF_DESTROYED = 0x0008, /* coroutine data has been freed */
		163	};
128		164
129	/* this is a structure representing a perl-level coroutine */	165	/* this is a structure representing a perl-level coroutine */
130	struct coro {	166	struct coro {
131	/* the c coroutine allocated to this perl coroutine, if any */	167	/* the c coroutine allocated to this perl coroutine, if any */
132	coro_cctx *cctx;	168	coro_cctx *cctx;
133		169
134	/* data associated with this coroutine (initial args) */	170	/* data associated with this coroutine (initial args) */
135	AV *args;	171	AV *args;
136	int refcnt;	172	int refcnt;
		173	int save; /* CORO_SAVE flags */
		174	int flags; /* CF_ flags */
137		175
138	/* optionally saved, might be zero */	176	/* optionally saved, might be zero */
139	AV *defav;	177	AV defav; / @_ */
140	SV *defsv;	178	SV defsv; / $_ */
141	SV *errsv;	179	SV errsv; / $@ */
		180	SV irssv; / $/ */
		181	SV irssv_sv; / real $/ cache */
142		182
143	#define VAR(name,type) type name;	183	#define VAR(name,type) type name;
144	# include "state.h"	184	# include "state.h"
145	#undef VAR	185	#undef VAR
146		186
…		…
148	int prio;	188	int prio;
149	};	189	};
150		190
151	typedef struct coro *Coro__State;	191	typedef struct coro *Coro__State;
152	typedef struct coro *Coro__State_or_hashref;	192	typedef struct coro *Coro__State_or_hashref;
		193
		194	/ Coro ******************************************************************/
		195
		196	#define PRIO_MAX 3
		197	#define PRIO_HIGH 1
		198	#define PRIO_NORMAL 0
		199	#define PRIO_LOW -1
		200	#define PRIO_IDLE -3
		201	#define PRIO_MIN -4
		202
		203	/* for Coro.pm */
		204	static SV *coro_current;
		205	static AV *coro_ready [PRIO_MAX-PRIO_MIN+1];
		206	static int coro_nready;
		207
		208	/ lowlevel stuff ********************************************************/
153		209
154	static AV *	210	static AV *
155	coro_clone_padlist (CV *cv)	211	coro_clone_padlist (CV *cv)
156	{	212	{
157	AV *padlist = CvPADLIST (cv);	213	AV *padlist = CvPADLIST (cv);
…		…
232		288
233	if (mg && AvFILLp ((av = (AV *)mg->mg_obj)) >= 0)	289	if (mg && AvFILLp ((av = (AV *)mg->mg_obj)) >= 0)
234	CvPADLIST (cv) = (AV *)AvARRAY (av)[AvFILLp (av)--];	290	CvPADLIST (cv) = (AV *)AvARRAY (av)[AvFILLp (av)--];
235	else	291	else
236	{	292	{
237	#if 0	293	#if PREFER_PERL_FUNCTIONS
238	/* this is probably cleaner, but also slower? */	294	/* this is probably cleaner, but also slower? */
239	CV *cp = Perl_cv_clone (cv);	295	CV *cp = Perl_cv_clone (cv);
240	CvPADLIST (cv) = CvPADLIST (cp);	296	CvPADLIST (cv) = CvPADLIST (cp);
241	CvPADLIST (cp) = 0;	297	CvPADLIST (cp) = 0;
242	SvREFCNT_dec (cp);	298	SvREFCNT_dec (cp);
…		…
266	av_extend (av, AvMAX (av) + 1);	322	av_extend (av, AvMAX (av) + 1);
267		323
268	AvARRAY (av)[++AvFILLp (av)] = (SV *)CvPADLIST (cv);	324	AvARRAY (av)[++AvFILLp (av)] = (SV *)CvPADLIST (cv);
269	}	325	}
270		326
		327	/ load & save, init *****************************************************/
		328
271	#define SB do {	329	#define SB do {
272	#define SE } while (0)	330	#define SE } while (0)
273		331
274	#define LOAD(state) load_state((state));
275	#define SAVE(state,flags) save_state((state),(flags));
276
277	#define REPLACE_SV(sv,val) SB SvREFCNT_dec(sv); (sv) = (val); (val) = 0; SE	332	#define REPLACE_SV(sv,val) SB SvREFCNT_dec (sv); (sv) = (val); (val) = 0; SE
278		333
279	static void	334	static void
280	load_state(Coro__State c)	335	load_perl (Coro__State c)
281	{	336	{
282	#define VAR(name,type) PL_ ## name = c->name;	337	#define VAR(name,type) PL_ ## name = c->name;
283	# include "state.h"	338	# include "state.h"
284	#undef VAR	339	#undef VAR
285		340
286	if (c->defav) REPLACE_SV (GvAV (PL_defgv), c->defav);	341	if (c->defav) REPLACE_SV (GvAV (PL_defgv), c->defav);
287	if (c->defsv) REPLACE_SV (DEFSV , c->defsv);	342	if (c->defsv) REPLACE_SV (DEFSV , c->defsv);
288	if (c->errsv) REPLACE_SV (ERRSV , c->errsv);	343	if (c->errsv) REPLACE_SV (ERRSV , c->errsv);
		344	if (c->irssv)
		345	{
		346	if (c->irssv == PL_rs \|\| sv_eq (PL_rs, c->irssv))
		347	SvREFCNT_dec (c->irssv);
		348	else
		349	{
		350	REPLACE_SV (PL_rs, c->irssv);
		351	if (!c->irssv_sv) c->irssv_sv = get_sv ("/", 0);
		352	sv_setsv (c->irssv_sv, PL_rs);
		353	}
		354	}
289		355
290	{	356	{
291	dSP;	357	dSP;
292	CV *cv;	358	CV *cv;
293		359
…		…
299	CvPADLIST (cv) = (AV *)POPs;	365	CvPADLIST (cv) = (AV *)POPs;
300	}	366	}
301		367
302	PUTBACK;	368	PUTBACK;
303	}	369	}
		370	assert (!PL_comppad \|\| AvARRAY (PL_comppad));//D
304	}	371	}
305		372
306	static void	373	static void
307	save_state(Coro__State c, int flags)	374	save_perl (Coro__State c)
308	{	375	{
		376	assert (!PL_comppad \|\| AvARRAY (PL_comppad));//D
309	{	377	{
310	dSP;	378	dSP;
311	I32 cxix = cxstack_ix;	379	I32 cxix = cxstack_ix;
312	PERL_CONTEXT *ccstk = cxstack;	380	PERL_CONTEXT *ccstk = cxstack;
313	PERL_SI *top_si = PL_curstackinfo;	381	PERL_SI *top_si = PL_curstackinfo;
…		…
315	/*	383	/*
316	* the worst thing you can imagine happens first - we have to save	384	* the worst thing you can imagine happens first - we have to save
317	* (and reinitialize) all cv's in the whole callchain :(	385	* (and reinitialize) all cv's in the whole callchain :(
318	*/	386	*/
319		387
		388	EXTEND (SP, 3 + 1);
320	PUSHs (Nullsv);	389	PUSHs (Nullsv);
321	/* this loop was inspired by pp_caller */	390	/* this loop was inspired by pp_caller */
322	for (;;)	391	for (;;)
323	{	392	{
324	while (cxix >= 0)	393	while (cxix >= 0)
325	{	394	{
326	PERL_CONTEXT *cx = &ccstk[cxix--];	395	PERL_CONTEXT *cx = &ccstk[cxix--];
327		396
328	if (CxTYPE(cx) == CXt_SUB)	397	if (CxTYPE (cx) == CXt_SUB)
329	{	398	{
330	CV *cv = cx->blk_sub.cv;	399	CV *cv = cx->blk_sub.cv;
331		400
332	if (CvDEPTH (cv))	401	if (CvDEPTH (cv))
333	{	402	{
334	EXTEND (SP, 3);	403	EXTEND (SP, 3);
335
336	PUSHs ((SV *)CvPADLIST(cv));	404	PUSHs ((SV *)CvPADLIST (cv));
337	PUSHs (INT2PTR (SV *, CvDEPTH (cv)));	405	PUSHs (INT2PTR (SV *, CvDEPTH (cv)));
338	PUSHs ((SV *)cv);	406	PUSHs ((SV *)cv);
339		407
340	CvDEPTH (cv) = 0;	408	CvDEPTH (cv) = 0;
341	get_padlist (cv);	409	get_padlist (cv);
342	}	410	}
343	}	411	}
344	#ifdef CXt_FORMAT
345	else if (CxTYPE(cx) == CXt_FORMAT)
346	{
347	/* I never used formats, so how should I know how these are implemented? */
348	/* my bold guess is as a simple, plain sub... */
349	croak ("CXt_FORMAT not yet handled. Don't switch coroutines from within formats");
350	}
351	#endif
352	}	412	}
353		413
354	if (top_si->si_type == PERLSI_MAIN)	414	if (top_si->si_type == PERLSI_MAIN)
355	break;	415	break;
356		416
…		…
360	}	420	}
361		421
362	PUTBACK;	422	PUTBACK;
363	}	423	}
364		424
365	c->defav = flags & TRANSFER_SAVE_DEFAV ? (AV *)SvREFCNT_inc (GvAV (PL_defgv)) : 0;	425	c->defav = c->save & CORO_SAVE_DEFAV ? (AV *)SvREFCNT_inc (GvAV (PL_defgv)) : 0;
366	c->defsv = flags & TRANSFER_SAVE_DEFSV ? SvREFCNT_inc (DEFSV) : 0;	426	c->defsv = c->save & CORO_SAVE_DEFSV ? SvREFCNT_inc (DEFSV) : 0;
367	c->errsv = flags & TRANSFER_SAVE_ERRSV ? SvREFCNT_inc (ERRSV) : 0;	427	c->errsv = c->save & CORO_SAVE_ERRSV ? SvREFCNT_inc (ERRSV) : 0;
		428	c->irssv = c->save & CORO_SAVE_IRSSV ? SvREFCNT_inc (PL_rs) : 0;
368		429
369	#define VAR(name,type)c->name = PL_ ## name;	430	#define VAR(name,type)c->name = PL_ ## name;
370	# include "state.h"	431	# include "state.h"
371	#undef VAR	432	#undef VAR
372	}	433	}
…		…
375	* allocate various perl stacks. This is an exact copy	436	* allocate various perl stacks. This is an exact copy
376	* of perl.c:init_stacks, except that it uses less memory	437	* of perl.c:init_stacks, except that it uses less memory
377	* on the (sometimes correct) assumption that coroutines do	438	* on the (sometimes correct) assumption that coroutines do
378	* not usually need a lot of stackspace.	439	* not usually need a lot of stackspace.
379	*/	440	*/
		441	#if PREFER_PERL_FUNCTIONS
		442	# define coro_init_stacks init_stacks
		443	#else
380	static void	444	static void
381	coro_init_stacks ()	445	coro_init_stacks ()
382	{	446	{
383	PL_curstackinfo = new_stackinfo(96, 1024/sizeof(PERL_CONTEXT) - 1);	447	PL_curstackinfo = new_stackinfo(128, 1024/sizeof(PERL_CONTEXT));
384	PL_curstackinfo->si_type = PERLSI_MAIN;	448	PL_curstackinfo->si_type = PERLSI_MAIN;
385	PL_curstack = PL_curstackinfo->si_stack;	449	PL_curstack = PL_curstackinfo->si_stack;
386	PL_mainstack = PL_curstack; /* remember in case we switch stacks */	450	PL_mainstack = PL_curstack; /* remember in case we switch stacks */
387		451
388	PL_stack_base = AvARRAY(PL_curstack);	452	PL_stack_base = AvARRAY(PL_curstack);
389	PL_stack_sp = PL_stack_base;	453	PL_stack_sp = PL_stack_base;
390	PL_stack_max = PL_stack_base + AvMAX(PL_curstack);	454	PL_stack_max = PL_stack_base + AvMAX(PL_curstack);
391		455
392	New(50,PL_tmps_stack,96,SV*);	456	New(50,PL_tmps_stack,128,SV*);
393	PL_tmps_floor = -1;	457	PL_tmps_floor = -1;
394	PL_tmps_ix = -1;	458	PL_tmps_ix = -1;
395	PL_tmps_max = 96;	459	PL_tmps_max = 128;
396		460
397	New(54,PL_markstack,16,I32);	461	New(54,PL_markstack,32,I32);
398	PL_markstack_ptr = PL_markstack;	462	PL_markstack_ptr = PL_markstack;
399	PL_markstack_max = PL_markstack + 16;	463	PL_markstack_max = PL_markstack + 32;
400		464
401	#ifdef SET_MARK_OFFSET	465	#ifdef SET_MARK_OFFSET
402	SET_MARK_OFFSET;	466	SET_MARK_OFFSET;
403	#endif	467	#endif
404		468
405	New(54,PL_scopestack,16,I32);	469	New(54,PL_scopestack,32,I32);
406	PL_scopestack_ix = 0;	470	PL_scopestack_ix = 0;
407	PL_scopestack_max = 16;	471	PL_scopestack_max = 32;
408		472
409	New(54,PL_savestack,96,ANY);	473	New(54,PL_savestack,64,ANY);
410	PL_savestack_ix = 0;	474	PL_savestack_ix = 0;
411	PL_savestack_max = 96;	475	PL_savestack_max = 64;
412		476
413	#if !PERL_VERSION_ATLEAST (5,9,0)	477	#if !PERL_VERSION_ATLEAST (5,9,0)
414	New(54,PL_retstack,8,OP*);	478	New(54,PL_retstack,16,OP*);
415	PL_retstack_ix = 0;	479	PL_retstack_ix = 0;
416	PL_retstack_max = 8;	480	PL_retstack_max = 16;
417	#endif	481	#endif
418	}	482	}
		483	#endif
419		484
420	/*	485	/*
421	* destroy the stacks, the callchain etc...	486	* destroy the stacks, the callchain etc...
422	*/	487	*/
423	static void	488	static void
424	coro_destroy_stacks ()	489	coro_destroy_stacks ()
425	{	490	{
426	if (!IN_DESTRUCT)	491	if (!IN_DESTRUCT)
427	{	492	{
428	/* is this ugly, I ask? */	493	/* restore all saved variables and stuff */
429	LEAVE_SCOPE (0);	494	LEAVE_SCOPE (0);
		495	assert (PL_tmps_floor == -1);
430		496
431	/* sure it is, but more important: is it correct?? :/ */	497	/* free all temporaries */
432	FREETMPS;	498	FREETMPS;
		499	assert (PL_tmps_ix == -1);
433		500
		501	/* unwind all extra stacks */
434	/POPSTACK_TO (PL_mainstack);//D//use/	502	POPSTACK_TO (PL_mainstack);
		503
		504	/* unwind main stack */
		505	dounwind (-1);
435	}	506	}
436		507
437	while (PL_curstackinfo->si_next)	508	while (PL_curstackinfo->si_next)
438	PL_curstackinfo = PL_curstackinfo->si_next;	509	PL_curstackinfo = PL_curstackinfo->si_next;
439		510
440	while (PL_curstackinfo)	511	while (PL_curstackinfo)
441	{	512	{
442	PERL_SI *p = PL_curstackinfo->si_prev;	513	PERL_SI *p = PL_curstackinfo->si_prev;
443		514
444	{ /D//remove/
445	dSP;
446	SWITCHSTACK (PL_curstack, PL_curstackinfo->si_stack);
447	PUTBACK; /* possibly superfluous */
448	}
449
450	if (!IN_DESTRUCT)	515	if (!IN_DESTRUCT)
451	{
452	dounwind (-1);/D//remove/
453	SvREFCNT_dec (PL_curstackinfo->si_stack);	516	SvREFCNT_dec (PL_curstackinfo->si_stack);
454	}
455		517
456	Safefree (PL_curstackinfo->si_cxstack);	518	Safefree (PL_curstackinfo->si_cxstack);
457	Safefree (PL_curstackinfo);	519	Safefree (PL_curstackinfo);
458	PL_curstackinfo = p;	520	PL_curstackinfo = p;
459	}	521	}
…		…
465	#if !PERL_VERSION_ATLEAST (5,9,0)	527	#if !PERL_VERSION_ATLEAST (5,9,0)
466	Safefree (PL_retstack);	528	Safefree (PL_retstack);
467	#endif	529	#endif
468	}	530	}
469		531
		532	/ coroutine stack handling **********************************************/
		533
470	static void	534	static void
471	setup_coro (struct coro *coro)	535	setup_coro (struct coro *coro)
472	{	536	{
473	/*	537	/*
474	* emulate part of the perl startup here.	538	* emulate part of the perl startup here.
475	*/	539	*/
476		540
477	coro_init_stacks ();	541	coro_init_stacks ();
478		542
		543	PL_curcop = &PL_compiling;
		544	PL_in_eval = EVAL_NULL;
479	PL_curcop = 0;	545	PL_comppad = 0;
480	PL_in_eval = 0;
481	PL_curpm = 0;	546	PL_curpm = 0;
		547	PL_localizing = 0;
		548	PL_dirty = 0;
		549	PL_restartop = 0;
482		550
483	{	551	{
484	dSP;	552	dSP;
485	LOGOP myop;	553	LOGOP myop;
486		554
487	/* I have no idea why this is needed, but it is */
488	PUSHMARK (SP);
489
490	SvREFCNT_dec (GvAV (PL_defgv));	555	SvREFCNT_dec (GvAV (PL_defgv));
491	GvAV (PL_defgv) = coro->args; coro->args = 0;	556	GvAV (PL_defgv) = coro->args; coro->args = 0;
492		557
493	Zero (&myop, 1, LOGOP);	558	Zero (&myop, 1, LOGOP);
494	myop.op_next = Nullop;	559	myop.op_next = Nullop;
495	myop.op_flags = OPf_WANT_VOID;	560	myop.op_flags = OPf_WANT_VOID;
496		561
497	PL_op = (OP *)&myop;
498
499	PUSHMARK (SP);	562	PUSHMARK (SP);
500	XPUSHs ((SV *)get_cv ("Coro::State::_coro_init", FALSE));	563	XPUSHs ((SV *)get_cv ("Coro::State::_coro_init", FALSE));
501	PUTBACK;	564	PUTBACK;
		565	PL_op = (OP *)&myop;
502	PL_op = PL_ppaddr[OP_ENTERSUB](aTHX);	566	PL_op = PL_ppaddr[OP_ENTERSUB](aTHX);
503	SPAGAIN;	567	SPAGAIN;
504
505	ENTER; /* necessary e.g. for dounwind */
506	}	568	}
		569
		570	ENTER; /* necessary e.g. for dounwind */
507	}	571	}
508		572
509	static void	573	static void
510	free_coro_mortal ()	574	free_coro_mortal ()
511	{	575	{
…		…
514	SvREFCNT_dec (coro_mortal);	578	SvREFCNT_dec (coro_mortal);
515	coro_mortal = 0;	579	coro_mortal = 0;
516	}	580	}
517	}	581	}
518		582
		583	/* inject a fake call to Coro::State::_cctx_init into the execution */
519	static void NOINLINE	584	static void NOINLINE
520	prepare_cctx (coro_cctx *cctx)	585	prepare_cctx (coro_cctx *cctx)
521	{	586	{
522	dSP;	587	dSP;
523	LOGOP myop;	588	LOGOP myop;
524		589
525	Zero (&myop, 1, LOGOP);	590	Zero (&myop, 1, LOGOP);
526	myop.op_next = PL_op;	591	myop.op_next = PL_op;
527	myop.op_flags = OPf_WANT_VOID;	592	myop.op_flags = OPf_WANT_VOID \| OPf_STACKED;
528
529	sv_setiv (get_sv ("Coro::State::_cctx", FALSE), PTR2IV (cctx));
530		593
531	PUSHMARK (SP);	594	PUSHMARK (SP);
		595	EXTEND (SP, 2);
		596	PUSHs (sv_2mortal (newSViv (PTR2IV (cctx))));
532	XPUSHs ((SV *)get_cv ("Coro::State::_cctx_init", FALSE));	597	PUSHs ((SV *)get_cv ("Coro::State::_cctx_init", FALSE));
533	PUTBACK;	598	PUTBACK;
		599	PL_op = (OP *)&myop;
534	PL_restartop = PL_ppaddr[OP_ENTERSUB](aTHX);	600	PL_op = PL_ppaddr[OP_ENTERSUB](aTHX);
535	SPAGAIN;	601	SPAGAIN;
536	}	602	}
537		603
538	static void	604	static void
539	coro_run (void *arg)	605	coro_run (void *arg)
540	{	606	{
541	/* coro_run is the alternative epilogue of transfer() */	607	/* coro_run is the alternative tail of transfer(), so unlock here. */
542	UNLOCK;	608	UNLOCK;
543		609
544	/*	610	/*
545	* this is a _very_ stripped down perl interpreter ;)	611	* this is a _very_ stripped down perl interpreter ;)
546	*/	612	*/
…		…
548		614
549	/* inject call to cctx_init */	615	/* inject call to cctx_init */
550	prepare_cctx ((coro_cctx *)arg);	616	prepare_cctx ((coro_cctx *)arg);
551		617
552	/* somebody will hit me for both perl_run and PL_restartop */	618	/* somebody will hit me for both perl_run and PL_restartop */
		619	PL_restartop = PL_op;
553	perl_run (PL_curinterp);	620	perl_run (PL_curinterp);
554		621
555	fputs ("FATAL: C coroutine fell over the edge of the world, aborting. Did you call exit in a coroutine?\n", stderr);	622	fputs ("FATAL: C coroutine fell over the edge of the world, aborting. Did you call exit in a coroutine?\n", stderr);
556	abort ();	623	abort ();
557	}	624	}
…		…
561	{	628	{
562	coro_cctx *cctx;	629	coro_cctx *cctx;
563		630
564	++cctx_count;	631	++cctx_count;
565		632
566	New (0, cctx, 1, coro_cctx);	633	Newz (0, cctx, 1, coro_cctx);
567		634
568	#if HAVE_MMAP	635	#if HAVE_MMAP
569		636
570	cctx->ssize = ((STACKSIZE * sizeof (long) + PAGESIZE - 1) / PAGESIZE + STACKGUARD) * PAGESIZE;	637	cctx->ssize = ((STACKSIZE * sizeof (long) + PAGESIZE - 1) / PAGESIZE + STACKGUARD) * PAGESIZE;
571	/* mmap suppsedly does allocate-on-write for us */	638	/* mmap supposedly does allocate-on-write for us */
572	cctx->sptr = mmap (0, cctx->ssize, PROT_EXEC\|PROT_READ\|PROT_WRITE, MAP_PRIVATE\|MAP_ANONYMOUS, 0, 0);	639	cctx->sptr = mmap (0, cctx->ssize, PROT_EXEC\|PROT_READ\|PROT_WRITE, MAP_PRIVATE\|MAP_ANONYMOUS, 0, 0);
573		640
574	if (cctx->sptr == (void *)-1)	641	if (cctx->sptr != (void *)-1)
575	{
576	perror ("FATAL: unable to mmap stack for coroutine");
577	_exit (EXIT_FAILURE);
578	}	642	{
579
580	# if STACKGUARD	643	# if STACKGUARD
581	mprotect (cctx->sptr, STACKGUARD * PAGESIZE, PROT_NONE);	644	mprotect (cctx->sptr, STACKGUARD * PAGESIZE, PROT_NONE);
582	# endif	645	# endif
583		646	REGISTER_STACK (
584	#else	647	cctx,
585
586	cctx->ssize = STACKSIZE * (long)sizeof (long);
587	New (0, cctx->sptr, STACKSIZE, long);
588
589	if (!cctx->sptr)
590	{
591	perror ("FATAL: unable to malloc stack for coroutine");
592	_exit (EXIT_FAILURE);
593	}
594
595	#endif
596
597	#if USE_VALGRIND
598	cctx->valgrind_id = VALGRIND_STACK_REGISTER (
599	STACKGUARD * PAGESIZE + (char *)cctx->sptr,	648	STACKGUARD * PAGESIZE + (char *)cctx->sptr,
600	cctx->ssize + (char *)cctx->sptr	649	cctx->ssize + (char *)cctx->sptr
601	);	650	);
602	#endif
603		651
604	coro_create (&cctx->cctx, coro_run, (void *)cctx, cctx->sptr, cctx->ssize);	652	coro_create (&cctx->cctx, coro_run, (void *)cctx, cctx->sptr, cctx->ssize);
		653	}
		654	else
		655	#endif
		656	{
		657	cctx->ssize = -STACKSIZE * (long)sizeof (long);
		658	New (0, cctx->sptr, STACKSIZE, long);
		659
		660	if (!cctx->sptr)
		661	{
		662	perror ("FATAL: unable to allocate stack for coroutine");
		663	_exit (EXIT_FAILURE);
		664	}
		665
		666	REGISTER_STACK (
		667	cctx,
		668	(char *)cctx->sptr,
		669	(char *)cctx->sptr - cctx->ssize
		670	);
		671
		672	coro_create (&cctx->cctx, coro_run, (void *)cctx, cctx->sptr, -cctx->ssize);
		673	}
605		674
606	return cctx;	675	return cctx;
607	}	676	}
608		677
609	static void	678	static void
610	cctx_free (coro_cctx *cctx)	679	cctx_destroy (coro_cctx *cctx)
611	{	680	{
612	if (!cctx)	681	if (!cctx)
613	return;	682	return;
614		683
615	--cctx_count;	684	--cctx_count;
…		…
617	#if USE_VALGRIND	686	#if USE_VALGRIND
618	VALGRIND_STACK_DEREGISTER (cctx->valgrind_id);	687	VALGRIND_STACK_DEREGISTER (cctx->valgrind_id);
619	#endif	688	#endif
620		689
621	#if HAVE_MMAP	690	#if HAVE_MMAP
		691	if (cctx->ssize > 0)
622	munmap (cctx->sptr, cctx->ssize);	692	munmap (cctx->sptr, cctx->ssize);
623	#else	693	else
		694	#endif
624	Safefree (cctx->sptr);	695	Safefree (cctx->sptr);
625	#endif
626		696
627	Safefree (cctx);	697	Safefree (cctx);
628	}	698	}
629		699
630	static coro_cctx *	700	static coro_cctx *
…		…
632	{	702	{
633	coro_cctx *cctx;	703	coro_cctx *cctx;
634		704
635	if (cctx_first)	705	if (cctx_first)
636	{	706	{
637	--cctx_idle;
638	cctx = cctx_first;	707	cctx = cctx_first;
639	cctx_first = cctx->next;	708	cctx_first = cctx->next;
		709	--cctx_idle;
640	}	710	}
641	else	711	else
642	{	712	{
643	cctx = cctx_new ();	713	cctx = cctx_new ();
644	PL_op = PL_op->op_next;	714	PL_op = PL_op->op_next;
…		…
648	}	718	}
649		719
650	static void	720	static void
651	cctx_put (coro_cctx *cctx)	721	cctx_put (coro_cctx *cctx)
652	{	722	{
		723	/* free another cctx if overlimit */
		724	if (cctx_idle >= MAX_IDLE_CCTX)
		725	{
		726	coro_cctx *first = cctx_first;
		727	cctx_first = first->next;
		728	--cctx_idle;
		729
		730	assert (!first->inuse);
		731	cctx_destroy (first);
		732	}
		733
653	++cctx_idle;	734	++cctx_idle;
654	cctx->next = cctx_first;	735	cctx->next = cctx_first;
655	cctx_first = cctx;	736	cctx_first = cctx;
656	}	737	}
657		738
		739	/ coroutine switching ***************************************************/
		740
658	/* never call directly, always through the coro_state_transfer global variable */	741	/* never call directly, always through the coro_state_transfer global variable */
659	static void NOINLINE	742	static void NOINLINE
660	transfer (struct coro prev, struct coro next, int flags)	743	transfer (struct coro prev, struct coro next)
661	{	744	{
662	dSTACKLEVEL;	745	dSTACKLEVEL;
663		746
664	/* sometimes transfer is only called to set idle_sp */	747	/* sometimes transfer is only called to set idle_sp */
665	if (flags == TRANSFER_SET_STACKLEVEL)	748	if (!next)
		749	{
666	((coro_cctx *)prev)->idle_sp = STACKLEVEL;	750	((coro_cctx *)prev)->idle_sp = STACKLEVEL;
		751	assert (((coro_cctx )prev)->idle_te = PL_top_env); / just for the side-effect when asserts are enabled */
		752	}
667	else if (prev != next)	753	else if (prev != next)
668	{	754	{
669	coro_cctx *prev__cctx;	755	coro_cctx *prev__cctx;
670		756
		757	if (prev->flags & CF_NEW)
		758	{
		759	/* create a new empty context */
		760	Newz (0, prev->cctx, 1, coro_cctx);
		761	prev->cctx->inuse = 1;
		762	prev->flags &= ~CF_NEW;
		763	prev->flags \|= CF_RUNNING;
		764	}
		765
		766	/TODO: must not croak here /
		767	if (!prev->flags & CF_RUNNING)
		768	croak ("Coro::State::transfer called with non-running prev Coro::State, but can only transfer from running states");
		769
		770	if (next->flags & CF_RUNNING)
		771	croak ("Coro::State::transfer called with running next Coro::State, but can only transfer to inactive states");
		772
		773	if (next->flags & CF_DESTROYED)
		774	croak ("Coro::State::transfer called with destroyed next Coro::State, but can only transfer to inactive states");
		775
		776	prev->flags &= ~CF_RUNNING;
		777	next->flags \|= CF_RUNNING;
		778
671	LOCK;	779	LOCK;
672		780
673	if (next->mainstack)	781	if (next->flags & CF_NEW)
674	{	782	{
675	/* coroutine already started */	783	/* need to start coroutine */
676	SAVE (prev, flags);	784	next->flags &= ~CF_NEW;
677	LOAD (next);	785	/* first get rid of the old state */
		786	save_perl (prev);
		787	/* setup coroutine call */
		788	setup_coro (next);
		789	/* need a new stack */
		790	assert (!next->cctx);
678	}	791	}
679	else	792	else
680	{	793	{
681	/* need to start coroutine */	794	/* coroutine already started */
682	/* first get rid of the old state */	795	save_perl (prev);
683	SAVE (prev, -1);	796	load_perl (next);
684	/* setup coroutine call */
685	setup_coro (next);
686	/* need a stack */
687	next->cctx = 0;
688	}	797	}
689
690	if (!prev->cctx)
691	/* create a new empty context */
692	Newz (0, prev->cctx, 1, coro_cctx);
693		798
694	prev__cctx = prev->cctx;	799	prev__cctx = prev->cctx;
695		800
696	/* possibly "free" the cctx */	801	/* possibly "free" the cctx */
697	if (prev__cctx->idle_sp == STACKLEVEL)	802	if (prev__cctx->idle_sp == STACKLEVEL)
698	{	803	{
		804	/* I assume that STACKLEVEL is a stronger indicator than PL_top_env changes */
		805	assert (("ERROR: current top_env must equal previous top_env", PL_top_env == prev__cctx->idle_te));
		806
		807	prev->cctx = 0;
		808
699	cctx_put (prev__cctx);	809	cctx_put (prev__cctx);
700	prev->cctx = 0;	810	prev__cctx->inuse = 0;
701	}	811	}
702		812
703	if (!next->cctx)	813	if (!next->cctx)
		814	{
704	next->cctx = cctx_get ();	815	next->cctx = cctx_get ();
		816	assert (!next->cctx->inuse);
		817	next->cctx->inuse = 1;
		818	}
705		819
706	if (prev__cctx != next->cctx)	820	if (prev__cctx != next->cctx)
707	{	821	{
708	prev__cctx->top_env = PL_top_env;	822	prev__cctx->top_env = PL_top_env;
709	PL_top_env = next->cctx->top_env;	823	PL_top_env = next->cctx->top_env;
710	coro_transfer (&prev__cctx->cctx, &next->cctx->cctx);	824	coro_transfer (&prev__cctx->cctx, &next->cctx->cctx);
711	}	825	}
712		826
713	free_coro_mortal ();	827	free_coro_mortal ();
714
715	UNLOCK;	828	UNLOCK;
716	}	829	}
717	}	830	}
718		831
719	struct transfer_args	832	struct transfer_args
720	{	833	{
721	struct coro prev, next;	834	struct coro prev, next;
722	int flags;
723	};	835	};
724		836
725	#define TRANSFER(ta) transfer ((ta).prev, (ta).next, (ta).flags)	837	#define TRANSFER(ta) transfer ((ta).prev, (ta).next)
726		838
		839	/ high level stuff ******************************************************/
		840
727	static void	841	static int
728	coro_state_destroy (struct coro *coro)	842	coro_state_destroy (struct coro *coro)
729	{	843	{
730	if (coro->refcnt--)	844	if (coro->flags & CF_DESTROYED)
731	return;	845	return 0;
		846
		847	coro->flags \|= CF_DESTROYED;
		848
		849	if (coro->flags & CF_READY)
		850	{
		851	/* reduce nready, as destroying a ready coro effectively unreadies it */
		852	/* alternative: look through all ready queues and remove the coro */
		853	LOCK;
		854	--coro_nready;
		855	UNLOCK;
		856	}
		857	else
		858	coro->flags \|= CF_READY; /* make sure it is NOT put into the readyqueue */
732		859
733	if (coro->mainstack && coro->mainstack != main_mainstack)	860	if (coro->mainstack && coro->mainstack != main_mainstack)
734	{	861	{
735	struct coro temp;	862	struct coro temp;
736		863
737	SAVE ((&temp), TRANSFER_SAVE_ALL);	864	assert (!(coro->flags & CF_RUNNING));
738	LOAD (coro);	865
		866	Zero (&temp, 1, struct coro);
		867	temp.save = CORO_SAVE_ALL;
		868
		869	if (coro->flags & CF_RUNNING)
		870	croak ("FATAL: tried to destroy currently running coroutine");
		871
		872	save_perl (&temp);
		873	load_perl (coro);
739		874
740	coro_destroy_stacks ();	875	coro_destroy_stacks ();
741		876
742	LOAD ((&temp)); /* this will get rid of defsv etc.. */	877	load_perl (&temp); /* this will get rid of defsv etc.. */
743		878
744	coro->mainstack = 0;	879	coro->mainstack = 0;
745	}	880	}
746		881
747	cctx_free (coro->cctx);	882	cctx_destroy (coro->cctx);
748	SvREFCNT_dec (coro->args);	883	SvREFCNT_dec (coro->args);
749	Safefree (coro);	884
		885	return 1;
750	}	886	}
751		887
752	static int	888	static int
753	coro_state_clear (pTHX_ SV sv, MAGIC mg)	889	coro_state_free (pTHX_ SV sv, MAGIC mg)
754	{	890	{
755	struct coro coro = (struct coro )mg->mg_ptr;	891	struct coro coro = (struct coro )mg->mg_ptr;
756	mg->mg_ptr = 0;	892	mg->mg_ptr = 0;
757		893
		894	if (--coro->refcnt < 0)
		895	{
758	coro_state_destroy (coro);	896	coro_state_destroy (coro);
		897	Safefree (coro);
		898	}
759		899
760	return 0;	900	return 0;
761	}	901	}
762		902
763	static int	903	static int
…		…
770	return 0;	910	return 0;
771	}	911	}
772		912
773	static MGVTBL coro_state_vtbl = {	913	static MGVTBL coro_state_vtbl = {
774	0, 0, 0, 0,	914	0, 0, 0, 0,
775	coro_state_clear,	915	coro_state_free,
776	0,	916	0,
777	#ifdef MGf_DUP	917	#ifdef MGf_DUP
778	coro_state_dup,	918	coro_state_dup,
779	#else	919	#else
780	# define MGf_DUP 0	920	# define MGf_DUP 0
…		…
802	assert (mg->mg_type == PERL_MAGIC_ext);	942	assert (mg->mg_type == PERL_MAGIC_ext);
803	return (struct coro *)mg->mg_ptr;	943	return (struct coro *)mg->mg_ptr;
804	}	944	}
805		945
806	static void	946	static void
807	prepare_transfer (struct transfer_args ta, SV prev, SV *next, int flags)	947	prepare_transfer (struct transfer_args ta, SV prev_sv, SV *next_sv)
808	{	948	{
809	ta->prev = SvSTATE (prev);	949	ta->prev = SvSTATE (prev_sv);
810	ta->next = SvSTATE (next);	950	ta->next = SvSTATE (next_sv);
811	ta->flags = flags;
812	}	951	}
813		952
814	static void	953	static void
815	api_transfer (SV prev, SV next, int flags)	954	api_transfer (SV prev_sv, SV next_sv)
816	{	955	{
817	dTHX;
818	struct transfer_args ta;	956	struct transfer_args ta;
819		957
820	prepare_transfer (&ta, prev, next, flags);	958	prepare_transfer (&ta, prev_sv, next_sv);
821	TRANSFER (ta);	959	TRANSFER (ta);
822	}	960	}
823		961
		962	static int
		963	api_save (SV *coro_sv, int new_save)
		964	{
		965	struct coro *coro = SvSTATE (coro_sv);
		966	int old_save = coro->save;
		967
		968	if (new_save >= 0)
		969	coro->save = new_save;
		970
		971	return old_save;
		972	}
		973
824	/ Coro ******************************************************************/	974	/ Coro ******************************************************************/
825		975
826	#define PRIO_MAX 3
827	#define PRIO_HIGH 1
828	#define PRIO_NORMAL 0
829	#define PRIO_LOW -1
830	#define PRIO_IDLE -3
831	#define PRIO_MIN -4
832
833	/* for Coro.pm */
834	static GV coro_current, coro_idle;
835	static AV *coro_ready [PRIO_MAX-PRIO_MIN+1];
836	static int coro_nready;
837
838	static void	976	static void
839	coro_enq (SV *sv)	977	coro_enq (SV *coro_sv)
840	{	978	{
841	int prio;
842
843	if (SvTYPE (sv) != SVt_PVHV)
844	croak ("Coro::ready tried to enqueue something that is not a coroutine");
845
846	prio = SvSTATE (sv)->prio;
847
848	av_push (coro_ready [prio - PRIO_MIN], sv);	979	av_push (coro_ready [SvSTATE (coro_sv)->prio - PRIO_MIN], coro_sv);
849	coro_nready++;
850	}	980	}
851		981
852	static SV *	982	static SV *
853	coro_deq (int min_prio)	983	coro_deq (int min_prio)
854	{	984	{
…		…
858	if (min_prio < 0)	988	if (min_prio < 0)
859	min_prio = 0;	989	min_prio = 0;
860		990
861	for (prio = PRIO_MAX - PRIO_MIN + 1; --prio >= min_prio; )	991	for (prio = PRIO_MAX - PRIO_MIN + 1; --prio >= min_prio; )
862	if (AvFILLp (coro_ready [prio]) >= 0)	992	if (AvFILLp (coro_ready [prio]) >= 0)
863	{
864	coro_nready--;
865	return av_shift (coro_ready [prio]);	993	return av_shift (coro_ready [prio]);
866	}
867		994
868	return 0;	995	return 0;
869	}	996	}
870		997
871	static void	998	static int
872	api_ready (SV *coro)	999	api_ready (SV *coro_sv)
873	{	1000	{
874	dTHX;	1001	struct coro *coro;
875		1002
876	if (SvROK (coro))	1003	if (SvROK (coro_sv))
877	coro = SvRV (coro);	1004	coro_sv = SvRV (coro_sv);
		1005
		1006	coro = SvSTATE (coro_sv);
		1007
		1008	if (coro->flags & CF_READY)
		1009	return 0;
		1010
		1011	coro->flags \|= CF_READY;
878		1012
879	LOCK;	1013	LOCK;
880	coro_enq (SvREFCNT_inc (coro));	1014	coro_enq (SvREFCNT_inc (coro_sv));
		1015	++coro_nready;
881	UNLOCK;	1016	UNLOCK;
		1017
		1018	return 1;
		1019	}
		1020
		1021	static int
		1022	api_is_ready (SV *coro_sv)
		1023	{
		1024	return !!(SvSTATE (coro_sv)->flags & CF_READY);
882	}	1025	}
883		1026
884	static void	1027	static void
885	prepare_schedule (struct transfer_args *ta)	1028	prepare_schedule (struct transfer_args *ta)
886	{	1029	{
887	SV current, prev, *next;	1030	SV prev_sv, next_sv;
888
889	current = GvSV (coro_current);
890		1031
891	for (;;)	1032	for (;;)
892	{	1033	{
893	LOCK;	1034	LOCK;
894	next = coro_deq (PRIO_MIN);	1035	next_sv = coro_deq (PRIO_MIN);
		1036
		1037	/* nothing to schedule: call the idle handler */
		1038	if (!next_sv)
		1039	{
		1040	dSP;
		1041	UNLOCK;
		1042
		1043	ENTER;
		1044	SAVETMPS;
		1045
		1046	PUSHMARK (SP);
		1047	PUTBACK;
		1048	call_sv (get_sv ("Coro::idle", FALSE), G_DISCARD);
		1049
		1050	FREETMPS;
		1051	LEAVE;
		1052	continue;
		1053	}
		1054
		1055	ta->next = SvSTATE (next_sv);
		1056
		1057	/* cannot transfer to destroyed coros, skip and look for next */
		1058	if (ta->next->flags & CF_DESTROYED)
		1059	{
		1060	UNLOCK;
		1061	SvREFCNT_dec (next_sv);
		1062	/* coro_nready is already taken care of by destroy */
		1063	continue;
		1064	}
		1065
		1066	--coro_nready;
895	UNLOCK;	1067	UNLOCK;
896
897	if (next)
898	break;	1068	break;
899
900	{
901	dSP;
902
903	ENTER;
904	SAVETMPS;
905
906	PUSHMARK (SP);
907	PUTBACK;
908	call_sv (GvSV (coro_idle), G_DISCARD);
909
910	FREETMPS;
911	LEAVE;
912	}	1069	}
913	}
914
915	prev = SvRV (current);
916	SvRV (current) = next;
917		1070
918	/* free this only after the transfer */	1071	/* free this only after the transfer */
		1072	prev_sv = SvRV (coro_current);
		1073	SvRV_set (coro_current, next_sv);
		1074	ta->prev = SvSTATE (prev_sv);
		1075
		1076	assert (ta->next->flags & CF_READY);
		1077	ta->next->flags &= ~CF_READY;
		1078
919	LOCK;	1079	LOCK;
920	free_coro_mortal ();	1080	free_coro_mortal ();
		1081	coro_mortal = prev_sv;
921	UNLOCK;	1082	UNLOCK;
922	coro_mortal = prev;
923
924	ta->prev = SvSTATE (prev);
925	ta->next = SvSTATE (next);
926	ta->flags = TRANSFER_SAVE_ALL;
927	}	1083	}
928		1084
929	static void	1085	static void
930	prepare_cede (struct transfer_args *ta)	1086	prepare_cede (struct transfer_args *ta)
931	{	1087	{
932	LOCK;	1088	api_ready (coro_current);
933	coro_enq (SvREFCNT_inc (SvRV (GvSV (coro_current))));
934	UNLOCK;
935
936	prepare_schedule (ta);	1089	prepare_schedule (ta);
937	}	1090	}
938		1091
		1092	static int
		1093	prepare_cede_notself (struct transfer_args *ta)
		1094	{
		1095	if (coro_nready)
		1096	{
		1097	SV *prev = SvRV (coro_current);
		1098	prepare_schedule (ta);
		1099	api_ready (prev);
		1100	return 1;
		1101	}
		1102	else
		1103	return 0;
		1104	}
		1105
939	static void	1106	static void
940	api_schedule (void)	1107	api_schedule (void)
941	{	1108	{
942	dTHX;
943	struct transfer_args ta;	1109	struct transfer_args ta;
944		1110
945	prepare_schedule (&ta);	1111	prepare_schedule (&ta);
946	TRANSFER (ta);	1112	TRANSFER (ta);
947	}	1113	}
948		1114
949	static void	1115	static int
950	api_cede (void)	1116	api_cede (void)
951	{	1117	{
952	dTHX;
953	struct transfer_args ta;	1118	struct transfer_args ta;
954		1119
955	prepare_cede (&ta);	1120	prepare_cede (&ta);
		1121
		1122	if (ta.prev != ta.next)
		1123	{
956	TRANSFER (ta);	1124	TRANSFER (ta);
		1125	return 1;
		1126	}
		1127	else
		1128	return 0;
		1129	}
		1130
		1131	static int
		1132	api_cede_notself (void)
		1133	{
		1134	struct transfer_args ta;
		1135
		1136	if (prepare_cede_notself (&ta))
		1137	{
		1138	TRANSFER (ta);
		1139	return 1;
		1140	}
		1141	else
		1142	return 0;
957	}	1143	}
958		1144
959	MODULE = Coro::State PACKAGE = Coro::State	1145	MODULE = Coro::State PACKAGE = Coro::State
960		1146
961	PROTOTYPES: DISABLE	1147	PROTOTYPES: DISABLE
…		…
967	#endif	1153	#endif
968	BOOT_PAGESIZE;	1154	BOOT_PAGESIZE;
969		1155
970	coro_state_stash = gv_stashpv ("Coro::State", TRUE);	1156	coro_state_stash = gv_stashpv ("Coro::State", TRUE);
971		1157
972	newCONSTSUB (coro_state_stash, "SAVE_DEFAV", newSViv (TRANSFER_SAVE_DEFAV));	1158	newCONSTSUB (coro_state_stash, "SAVE_DEFAV", newSViv (CORO_SAVE_DEFAV));
973	newCONSTSUB (coro_state_stash, "SAVE_DEFSV", newSViv (TRANSFER_SAVE_DEFSV));	1159	newCONSTSUB (coro_state_stash, "SAVE_DEFSV", newSViv (CORO_SAVE_DEFSV));
974	newCONSTSUB (coro_state_stash, "SAVE_ERRSV", newSViv (TRANSFER_SAVE_ERRSV));	1160	newCONSTSUB (coro_state_stash, "SAVE_ERRSV", newSViv (CORO_SAVE_ERRSV));
		1161	newCONSTSUB (coro_state_stash, "SAVE_IRSSV", newSViv (CORO_SAVE_IRSSV));
		1162	newCONSTSUB (coro_state_stash, "SAVE_ALL", newSViv (CORO_SAVE_ALL));
975		1163
976	main_mainstack = PL_mainstack;	1164	main_mainstack = PL_mainstack;
977		1165
978	coroapi.ver = CORO_API_VERSION;	1166	coroapi.ver = CORO_API_VERSION;
979	coroapi.transfer = api_transfer;	1167	coroapi.transfer = api_transfer;
…		…
989	HV *hv;	1177	HV *hv;
990	int i;	1178	int i;
991		1179
992	Newz (0, coro, 1, struct coro);	1180	Newz (0, coro, 1, struct coro);
993	coro->args = newAV ();	1181	coro->args = newAV ();
		1182	coro->save = CORO_SAVE_ALL;
		1183	coro->flags = CF_NEW;
994		1184
995	hv = newHV ();	1185	hv = newHV ();
996	sv_magicext ((SV )hv, 0, PERL_MAGIC_ext, &coro_state_vtbl, (char )coro, 0)->mg_flags \|= MGf_DUP;	1186	sv_magicext ((SV )hv, 0, PERL_MAGIC_ext, &coro_state_vtbl, (char )coro, 0)->mg_flags \|= MGf_DUP;
997	RETVAL = sv_bless (newRV_noinc ((SV *)hv), gv_stashpv (klass, 1));	1187	RETVAL = sv_bless (newRV_noinc ((SV *)hv), gv_stashpv (klass, 1));
998		1188
999	for (i = 1; i < items; i++)	1189	for (i = 1; i < items; i++)
1000	av_push (coro->args, newSVsv (ST (i)));	1190	av_push (coro->args, newSVsv (ST (i)));
1001	}	1191	}
1002	OUTPUT:	1192	OUTPUT:
		1193	RETVAL
		1194
		1195	int
		1196	save (SV *coro, int new_save = -1)
		1197	CODE:
		1198	RETVAL = api_save (coro, new_save);
		1199	OUTPUT:
1003	RETVAL	1200	RETVAL
1004		1201
1005	void	1202	void
1006	_set_stacklevel (...)	1203	_set_stacklevel (...)
1007	ALIAS:	1204	ALIAS:
1008	Coro::State::transfer = 1	1205	Coro::State::transfer = 1
1009	Coro::schedule = 2	1206	Coro::schedule = 2
1010	Coro::cede = 3	1207	Coro::cede = 3
1011	Coro::Cont::yield = 4	1208	Coro::cede_notself = 4
1012	CODE:	1209	CODE:
1013	{	1210	{
1014	struct transfer_args ta;	1211	struct transfer_args ta;
1015		1212
1016	switch (ix)	1213	switch (ix)
1017	{	1214	{
1018	case 0:	1215	case 0:
1019	ta.prev = (struct coro )INT2PTR (coro_cctx , SvIV (ST (0)));	1216	ta.prev = (struct coro )INT2PTR (coro_cctx , SvIV (ST (0)));
1020	ta.next = 0;	1217	ta.next = 0;
1021	ta.flags = TRANSFER_SET_STACKLEVEL;
1022	break;	1218	break;
1023		1219
1024	case 1:	1220	case 1:
1025	if (items != 3)	1221	if (items != 2)
1026	croak ("Coro::State::transfer(prev,next,flags) expects three arguments, not %d", items);	1222	croak ("Coro::State::transfer (prev,next) expects two arguments, not %d", items);
1027		1223
1028	prepare_transfer (&ta, ST (0), ST (1), SvIV (ST (2)));	1224	prepare_transfer (&ta, ST (0), ST (1));
1029	break;	1225	break;
1030		1226
1031	case 2:	1227	case 2:
1032	prepare_schedule (&ta);	1228	prepare_schedule (&ta);
1033	break;	1229	break;
…		…
1035	case 3:	1231	case 3:
1036	prepare_cede (&ta);	1232	prepare_cede (&ta);
1037	break;	1233	break;
1038		1234
1039	case 4:	1235	case 4:
1040	{	1236	if (!prepare_cede_notself (&ta))
1041	SV *yieldstack;	1237	XSRETURN_EMPTY;
1042	SV *sv;
1043	AV *defav = GvAV (PL_defgv);
1044		1238
1045	yieldstack = *hv_fetch (
1046	(HV *)SvRV (GvSV (coro_current)),
1047	"yieldstack", sizeof ("yieldstack") - 1,
1048	0
1049	);
1050
1051	/* set up @_ -- ugly */
1052	av_clear (defav);
1053	av_fill (defav, items - 1);
1054	while (items--)
1055	av_store (defav, items, SvREFCNT_inc (ST(items)));
1056
1057	sv = av_pop ((AV *)SvRV (yieldstack));
1058	ta.prev = SvSTATE (av_fetch ((AV )SvRV (sv), 0, 0));
1059	ta.next = SvSTATE (av_fetch ((AV )SvRV (sv), 1, 0));
1060	ta.flags = 0;
1061	SvREFCNT_dec (sv);
1062	}
1063	break;	1239	break;
1064
1065	}	1240	}
1066		1241
		1242	BARRIER;
1067	TRANSFER (ta);	1243	TRANSFER (ta);
1068	}
1069		1244
1070	void	1245	if (GIMME_V != G_VOID && ta.next != ta.prev)
1071	_clone_state_from (SV dst, SV src)	1246	XSRETURN_YES;
		1247	}
		1248
		1249	bool
		1250	_destroy (SV *coro_sv)
1072	CODE:	1251	CODE:
1073	{	1252	RETVAL = coro_state_destroy (SvSTATE (coro_sv));
1074	struct coro *coro_src = SvSTATE (src);	1253	OUTPUT:
1075		1254	RETVAL
1076	sv_unmagic (SvRV (dst), PERL_MAGIC_ext);
1077
1078	++coro_src->refcnt;
1079	sv_magicext (SvRV (dst), 0, PERL_MAGIC_ext, &coro_state_vtbl, (char *)coro_src, 0)->mg_flags \|= MGf_DUP;
1080	}
1081		1255
1082	void	1256	void
1083	_exit (code)	1257	_exit (code)
1084	int code	1258	int code
1085	PROTOTYPE: $	1259	PROTOTYPE: $
…		…
1113	newCONSTSUB (coro_stash, "PRIO_NORMAL", newSViv (PRIO_NORMAL));	1287	newCONSTSUB (coro_stash, "PRIO_NORMAL", newSViv (PRIO_NORMAL));
1114	newCONSTSUB (coro_stash, "PRIO_LOW", newSViv (PRIO_LOW));	1288	newCONSTSUB (coro_stash, "PRIO_LOW", newSViv (PRIO_LOW));
1115	newCONSTSUB (coro_stash, "PRIO_IDLE", newSViv (PRIO_IDLE));	1289	newCONSTSUB (coro_stash, "PRIO_IDLE", newSViv (PRIO_IDLE));
1116	newCONSTSUB (coro_stash, "PRIO_MIN", newSViv (PRIO_MIN));	1290	newCONSTSUB (coro_stash, "PRIO_MIN", newSViv (PRIO_MIN));
1117		1291
1118	coro_current = gv_fetchpv ("Coro::current", TRUE, SVt_PV);	1292	coro_current = get_sv ("Coro::current", FALSE);
1119	coro_idle = gv_fetchpv ("Coro::idle" , TRUE, SVt_PV);	1293	SvREADONLY_on (coro_current);
1120		1294
1121	for (i = PRIO_MAX - PRIO_MIN + 1; i--; )	1295	for (i = PRIO_MAX - PRIO_MIN + 1; i--; )
1122	coro_ready[i] = newAV ();	1296	coro_ready[i] = newAV ();
1123		1297
1124	{	1298	{
1125	SV *sv = perl_get_sv("Coro::API", 1);	1299	SV *sv = perl_get_sv("Coro::API", 1);
1126		1300
1127	coroapi.schedule = api_schedule;	1301	coroapi.schedule = api_schedule;
		1302	coroapi.save = api_save;
1128	coroapi.cede = api_cede;	1303	coroapi.cede = api_cede;
		1304	coroapi.cede_notself = api_cede_notself;
1129	coroapi.ready = api_ready;	1305	coroapi.ready = api_ready;
		1306	coroapi.is_ready = api_is_ready;
1130	coroapi.nready = &coro_nready;	1307	coroapi.nready = &coro_nready;
1131	coroapi.current = coro_current;	1308	coroapi.current = coro_current;
1132		1309
1133	GCoroAPI = &coroapi;	1310	GCoroAPI = &coroapi;
1134	sv_setiv (sv, (IV)&coroapi);	1311	sv_setiv (sv, (IV)&coroapi);
1135	SvREADONLY_on (sv);	1312	SvREADONLY_on (sv);
1136	}	1313	}
1137	}	1314	}
		1315
		1316	void
		1317	_set_current (SV *current)
		1318	PROTOTYPE: $
		1319	CODE:
		1320	SvREFCNT_dec (SvRV (coro_current));
		1321	SvRV_set (coro_current, SvREFCNT_inc (SvRV (current)));
1138		1322
1139	int	1323	int
1140	prio (Coro::State coro, int newprio = 0)	1324	prio (Coro::State coro, int newprio = 0)
1141	ALIAS:	1325	ALIAS:
1142	nice = 1	1326	nice = 1
…		…
1145	RETVAL = coro->prio;	1329	RETVAL = coro->prio;
1146		1330
1147	if (items > 1)	1331	if (items > 1)
1148	{	1332	{
1149	if (ix)	1333	if (ix)
1150	newprio += coro->prio;	1334	newprio = coro->prio - newprio;
1151		1335
1152	if (newprio < PRIO_MIN) newprio = PRIO_MIN;	1336	if (newprio < PRIO_MIN) newprio = PRIO_MIN;
1153	if (newprio > PRIO_MAX) newprio = PRIO_MAX;	1337	if (newprio > PRIO_MAX) newprio = PRIO_MAX;
1154		1338
1155	coro->prio = newprio;	1339	coro->prio = newprio;
1156	}	1340	}
1157	}	1341	}
		1342	OUTPUT:
		1343	RETVAL
1158		1344
1159	void	1345	SV *
1160	ready (SV *self)	1346	ready (SV *self)
1161	PROTOTYPE: $	1347	PROTOTYPE: $
1162	CODE:	1348	CODE:
1163	api_ready (self);	1349	RETVAL = boolSV (api_ready (self));
		1350	OUTPUT:
		1351	RETVAL
		1352
		1353	SV *
		1354	is_ready (SV *self)
		1355	PROTOTYPE: $
		1356	CODE:
		1357	RETVAL = boolSV (api_is_ready (self));
		1358	OUTPUT:
		1359	RETVAL
1164		1360
1165	int	1361	int
1166	nready (...)	1362	nready (...)
1167	PROTOTYPE:	1363	PROTOTYPE:
1168	CODE:	1364	CODE:
…		…
1174		1370
1175	SV *	1371	SV *
1176	_get_state ()	1372	_get_state ()
1177	CODE:	1373	CODE:
1178	{	1374	{
1179	struct {	1375	struct io_state *data;
1180	int errorno;
1181	int laststype;
1182	int laststatval;
1183	Stat_t statcache;
1184	} data;
1185		1376
		1377	RETVAL = newSV (sizeof (struct io_state));
		1378	data = (struct io_state *)SvPVX (RETVAL);
		1379	SvCUR_set (RETVAL, sizeof (struct io_state));
		1380	SvPOK_only (RETVAL);
		1381
1186	data.errorno = errno;	1382	data->errorno = errno;
1187	data.laststype = PL_laststype;	1383	data->laststype = PL_laststype;
1188	data.laststatval = PL_laststatval;	1384	data->laststatval = PL_laststatval;
1189	data.statcache = PL_statcache;	1385	data->statcache = PL_statcache;
1190
1191	RETVAL = newSVpvn ((char *)&data, sizeof data);
1192	}	1386	}
1193	OUTPUT:	1387	OUTPUT:
1194	RETVAL	1388	RETVAL
1195		1389
1196	void	1390	void
1197	_set_state (char *data_)	1391	_set_state (char *data_)
1198	PROTOTYPE: $	1392	PROTOTYPE: $
1199	CODE:	1393	CODE:
1200	{	1394	{
1201	struct {	1395	struct io_state data = (void )data_;
1202	int errorno;
1203	int laststype;
1204	int laststatval;
1205	Stat_t statcache;
1206	} data = (void )data_;
1207		1396
1208	errno = data->errorno;	1397	errno = data->errorno;
1209	PL_laststype = data->laststype;	1398	PL_laststype = data->laststype;
1210	PL_laststatval = data->laststatval;	1399	PL_laststatval = data->laststatval;
1211	PL_statcache = data->statcache;	1400	PL_statcache = data->statcache;
1212	}	1401	}
		1402

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Comparing Coro/Coro/State.xs (file contents): Revision 1.109 by root, Mon Nov 27 18:45:29 2006 UTC vs. Revision 1.142 by root, Tue Feb 13 19:21:29 2007 UTC

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Comparing Coro/Coro/State.xs (file contents):
Revision 1.109 by root, Mon Nov 27 18:45:29 2006 UTC vs.
Revision 1.142 by root, Tue Feb 13 19:21:29 2007 UTC