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

Comparing Coro/Coro/State.xs (file contents):
Revision 1.110 by root, Tue Nov 28 23:08:07 2006 UTC vs.
Revision 1.138 by root, Sun Jan 14 20:49:45 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	#endif
		39
		40	/* the maximum number of idle cctx that will be pooled */
		41	#define MAX_IDLE_CCTX 8
		42
		43	#define PERL_VERSION_ATLEAST(a,b,c) \
		44	(PERL_REVISION > (a) \
		45	\|\| (PERL_REVISION == (a) \
		46	&& (PERL_VERSION > (b) \
		47	\|\| (PERL_VERSION == (b) && PERLSUBVERSION >= (c)))))
		48
		49	#if !PERL_VERSION_ATLEAST (5,6,0)
		50	# ifndef PL_ppaddr
		51	# define PL_ppaddr ppaddr
		52	# endif
		53	# ifndef call_sv
		54	# define call_sv perl_call_sv
		55	# endif
		56	# ifndef get_sv
		57	# define get_sv perl_get_sv
		58	# endif
		59	# ifndef get_cv
		60	# define get_cv perl_get_cv
		61	# endif
		62	# ifndef IS_PADGV
		63	# define IS_PADGV(v) 0
		64	# endif
		65	# ifndef IS_PADCONST
		66	# define IS_PADCONST(v) 0
		67	# endif
		68	#endif
		69
		70	/* 5.8.7 */
		71	#ifndef SvRV_set
		72	# define SvRV_set(s,v) SvRV(s) = (v)
		73	#endif
		74
		75	#if !__i386 && !__x86_64 && !__powerpc && !__m68k && !__alpha && !__mips && !__sparc64
		76	# undef STACKGUARD
		77	#endif
		78
		79	#ifndef STACKGUARD
		80	# define STACKGUARD 0
		81	#endif
		82
		83	/* prefer perl internal functions over our own? */
		84	#ifndef PREFER_PERL_FUNCTIONS
		85	# define PREFER_PERL_FUNCTIONS 0
		86	#endif
		87
74	/* The next macro should declare a variable stacklevel that contains and approximation	88	/* 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	89	* to the current C stack pointer. Its property is that it changes with each call
76	* and should be unique. */	90	* and should be unique. */
77	#define dSTACKLEVEL int stacklevel	91	#define dSTACKLEVEL int stacklevel
78	#define STACKLEVEL ((void *)&stacklevel)	92	#define STACKLEVEL ((void *)&stacklevel)
79		93
80	#define IN_DESTRUCT (PL_main_cv == Nullcv)	94	#define IN_DESTRUCT (PL_main_cv == Nullcv)
81		95
82	#if __GNUC__ >= 3	96	#if __GNUC__ >= 3
83	# define attribute(x) __attribute__(x)	97	# define attribute(x) __attribute__(x)
		98	# define BARRIER __asm__ __volatile__ ("" : : : "memory")
84	#else	99	#else
85	# define attribute(x)	100	# define attribute(x)
		101	# define BARRIER
86	#endif	102	#endif
87		103
88	#define NOINLINE attribute ((noinline))	104	#define NOINLINE attribute ((noinline))
89		105
90	#include "CoroAPI.h"	106	#include "CoroAPI.h"
91
92	#define TRANSFER_SET_STACKLEVEL 0x8bfbfbfb /* magic cookie */
93		107
94	#ifdef USE_ITHREADS	108	#ifdef USE_ITHREADS
95	static perl_mutex coro_mutex;	109	static perl_mutex coro_mutex;
96	# define LOCK do { MUTEX_LOCK (&coro_mutex); } while (0)	110	# define LOCK do { MUTEX_LOCK (&coro_mutex); } while (0)
97	# define UNLOCK do { MUTEX_UNLOCK (&coro_mutex); } while (0)	111	# define UNLOCK do { MUTEX_UNLOCK (&coro_mutex); } while (0)
98	#else	112	#else
99	# define LOCK (void)0	113	# define LOCK (void)0
100	# define UNLOCK (void)0	114	# define UNLOCK (void)0
101	#endif	115	#endif
102		116
		117	/* helper storage struct for Coro::AIO */
		118	struct io_state
		119	{
		120	int errorno;
		121	I32 laststype;
		122	int laststatval;
		123	Stat_t statcache;
		124	};
		125
103	static struct CoroAPI coroapi;	126	static struct CoroAPI coroapi;
104	static AV main_mainstack; / used to differentiate between $main and others */	127	static AV main_mainstack; / used to differentiate between $main and others */
105	static HV coro_state_stash, coro_stash;	128	static HV coro_state_stash, coro_stash;
106	static SV coro_mortal; / will be freed after next transfer */	129	static SV coro_mortal; / will be freed after next transfer */
107		130
…		…
115	/* the stack */	138	/* the stack */
116	void *sptr;	139	void *sptr;
117	long ssize; /* positive == mmap, otherwise malloc */	140	long ssize; /* positive == mmap, otherwise malloc */
118		141
119	/* cpu state */	142	/* cpu state */
120	void idle_sp; / sp of top-level transfer/schedule/cede call */	143	void idle_sp; / sp of top-level transfer/schedule/cede call */
		144	JMPENV idle_te; / same as idle_sp, but for top_env, TODO: remove once stable */
121	JMPENV *top_env;	145	JMPENV *top_env;
122	coro_context cctx;	146	coro_context cctx;
123		147
		148	int inuse;
		149
124	#if USE_VALGRIND	150	#if USE_VALGRIND
125	int valgrind_id;	151	int valgrind_id;
126	#endif	152	#endif
127	} coro_cctx;	153	} coro_cctx;
		154
		155	enum {
		156	CF_RUNNING = 0x0001, /* coroutine is running */
		157	CF_READY = 0x0002, /* coroutine is ready */
		158	CF_NEW = 0x0004, /* has never been switched to */
		159	CF_DESTROYED = 0x0008, /* coroutine data has been freed */
		160	};
128		161
129	/* this is a structure representing a perl-level coroutine */	162	/* this is a structure representing a perl-level coroutine */
130	struct coro {	163	struct coro {
131	/* the c coroutine allocated to this perl coroutine, if any */	164	/* the c coroutine allocated to this perl coroutine, if any */
132	coro_cctx *cctx;	165	coro_cctx *cctx;
133		166
134	/* data associated with this coroutine (initial args) */	167	/* data associated with this coroutine (initial args) */
135	AV *args;	168	AV *args;
136	int refcnt;	169	int refcnt;
		170	int save; /* CORO_SAVE flags */
		171	int flags; /* CF_ flags */
137		172
138	/* optionally saved, might be zero */	173	/* optionally saved, might be zero */
139	AV *defav;	174	AV defav; / @_ */
140	SV *defsv;	175	SV defsv; / $_ */
141	SV *errsv;	176	SV errsv; / $@ */
		177	SV irssv; / $/ */
		178	SV irssv_sv; / real $/ cache */
142		179
143	#define VAR(name,type) type name;	180	#define VAR(name,type) type name;
144	# include "state.h"	181	# include "state.h"
145	#undef VAR	182	#undef VAR
146		183
…		…
148	int prio;	185	int prio;
149	};	186	};
150		187
151	typedef struct coro *Coro__State;	188	typedef struct coro *Coro__State;
152	typedef struct coro *Coro__State_or_hashref;	189	typedef struct coro *Coro__State_or_hashref;
		190
		191	/ Coro ******************************************************************/
		192
		193	#define PRIO_MAX 3
		194	#define PRIO_HIGH 1
		195	#define PRIO_NORMAL 0
		196	#define PRIO_LOW -1
		197	#define PRIO_IDLE -3
		198	#define PRIO_MIN -4
		199
		200	/* for Coro.pm */
		201	static SV *coro_current;
		202	static AV *coro_ready [PRIO_MAX-PRIO_MIN+1];
		203	static int coro_nready;
		204
		205	/ lowlevel stuff ********************************************************/
153		206
154	static AV *	207	static AV *
155	coro_clone_padlist (CV *cv)	208	coro_clone_padlist (CV *cv)
156	{	209	{
157	AV *padlist = CvPADLIST (cv);	210	AV *padlist = CvPADLIST (cv);
…		…
232		285
233	if (mg && AvFILLp ((av = (AV *)mg->mg_obj)) >= 0)	286	if (mg && AvFILLp ((av = (AV *)mg->mg_obj)) >= 0)
234	CvPADLIST (cv) = (AV *)AvARRAY (av)[AvFILLp (av)--];	287	CvPADLIST (cv) = (AV *)AvARRAY (av)[AvFILLp (av)--];
235	else	288	else
236	{	289	{
237	#if 0	290	#if PREFER_PERL_FUNCTIONS
238	/* this is probably cleaner, but also slower? */	291	/* this is probably cleaner, but also slower? */
239	CV *cp = Perl_cv_clone (cv);	292	CV *cp = Perl_cv_clone (cv);
240	CvPADLIST (cv) = CvPADLIST (cp);	293	CvPADLIST (cv) = CvPADLIST (cp);
241	CvPADLIST (cp) = 0;	294	CvPADLIST (cp) = 0;
242	SvREFCNT_dec (cp);	295	SvREFCNT_dec (cp);
…		…
266	av_extend (av, AvMAX (av) + 1);	319	av_extend (av, AvMAX (av) + 1);
267		320
268	AvARRAY (av)[++AvFILLp (av)] = (SV *)CvPADLIST (cv);	321	AvARRAY (av)[++AvFILLp (av)] = (SV *)CvPADLIST (cv);
269	}	322	}
270		323
		324	/ load & save, init *****************************************************/
		325
271	#define SB do {	326	#define SB do {
272	#define SE } while (0)	327	#define SE } while (0)
273		328
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	329	#define REPLACE_SV(sv,val) SB SvREFCNT_dec (sv); (sv) = (val); (val) = 0; SE
278		330
279	static void	331	static void
280	load_state(Coro__State c)	332	load_perl (Coro__State c)
281	{	333	{
282	#define VAR(name,type) PL_ ## name = c->name;	334	#define VAR(name,type) PL_ ## name = c->name;
283	# include "state.h"	335	# include "state.h"
284	#undef VAR	336	#undef VAR
285		337
286	if (c->defav) REPLACE_SV (GvAV (PL_defgv), c->defav);	338	if (c->defav) REPLACE_SV (GvAV (PL_defgv), c->defav);
287	if (c->defsv) REPLACE_SV (DEFSV , c->defsv);	339	if (c->defsv) REPLACE_SV (DEFSV , c->defsv);
288	if (c->errsv) REPLACE_SV (ERRSV , c->errsv);	340	if (c->errsv) REPLACE_SV (ERRSV , c->errsv);
		341	if (c->irssv)
		342	{
		343	if (c->irssv == PL_rs \|\| sv_eq (PL_rs, c->irssv))
		344	SvREFCNT_dec (c->irssv);
		345	else
		346	{
		347	REPLACE_SV (PL_rs, c->irssv);
		348	if (!c->irssv_sv) c->irssv_sv = get_sv ("/", 0);
		349	sv_setsv (c->irssv_sv, PL_rs);
		350	}
		351	}
289		352
290	{	353	{
291	dSP;	354	dSP;
292	CV *cv;	355	CV *cv;
293		356
…		…
302	PUTBACK;	365	PUTBACK;
303	}	366	}
304	}	367	}
305		368
306	static void	369	static void
307	save_state(Coro__State c, int flags)	370	save_perl (Coro__State c)
308	{	371	{
309	{	372	{
310	dSP;	373	dSP;
311	I32 cxix = cxstack_ix;	374	I32 cxix = cxstack_ix;
312	PERL_CONTEXT *ccstk = cxstack;	375	PERL_CONTEXT *ccstk = cxstack;
…		…
315	/*	378	/*
316	* the worst thing you can imagine happens first - we have to save	379	* the worst thing you can imagine happens first - we have to save
317	* (and reinitialize) all cv's in the whole callchain :(	380	* (and reinitialize) all cv's in the whole callchain :(
318	*/	381	*/
319		382
		383	EXTEND (SP, 3 + 1);
320	PUSHs (Nullsv);	384	PUSHs (Nullsv);
321	/* this loop was inspired by pp_caller */	385	/* this loop was inspired by pp_caller */
322	for (;;)	386	for (;;)
323	{	387	{
324	while (cxix >= 0)	388	while (cxix >= 0)
325	{	389	{
326	PERL_CONTEXT *cx = &ccstk[cxix--];	390	PERL_CONTEXT *cx = &ccstk[cxix--];
327		391
328	if (CxTYPE(cx) == CXt_SUB)	392	if (CxTYPE (cx) == CXt_SUB)
329	{	393	{
330	CV *cv = cx->blk_sub.cv;	394	CV *cv = cx->blk_sub.cv;
331		395
332	if (CvDEPTH (cv))	396	if (CvDEPTH (cv))
333	{	397	{
334	EXTEND (SP, 3);	398	EXTEND (SP, 3);
335
336	PUSHs ((SV *)CvPADLIST(cv));	399	PUSHs ((SV *)CvPADLIST (cv));
337	PUSHs (INT2PTR (SV *, CvDEPTH (cv)));	400	PUSHs (INT2PTR (SV *, CvDEPTH (cv)));
338	PUSHs ((SV *)cv);	401	PUSHs ((SV *)cv);
339		402
340	CvDEPTH (cv) = 0;	403	CvDEPTH (cv) = 0;
341	get_padlist (cv);	404	get_padlist (cv);
342	}	405	}
343	}	406	}
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	}	407	}
353		408
354	if (top_si->si_type == PERLSI_MAIN)	409	if (top_si->si_type == PERLSI_MAIN)
355	break;	410	break;
356		411
…		…
360	}	415	}
361		416
362	PUTBACK;	417	PUTBACK;
363	}	418	}
364		419
365	c->defav = flags & TRANSFER_SAVE_DEFAV ? (AV *)SvREFCNT_inc (GvAV (PL_defgv)) : 0;	420	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;	421	c->defsv = c->save & CORO_SAVE_DEFSV ? SvREFCNT_inc (DEFSV) : 0;
367	c->errsv = flags & TRANSFER_SAVE_ERRSV ? SvREFCNT_inc (ERRSV) : 0;	422	c->errsv = c->save & CORO_SAVE_ERRSV ? SvREFCNT_inc (ERRSV) : 0;
		423	c->irssv = c->save & CORO_SAVE_IRSSV ? SvREFCNT_inc (PL_rs) : 0;
368		424
369	#define VAR(name,type)c->name = PL_ ## name;	425	#define VAR(name,type)c->name = PL_ ## name;
370	# include "state.h"	426	# include "state.h"
371	#undef VAR	427	#undef VAR
372	}	428	}
…		…
375	* allocate various perl stacks. This is an exact copy	431	* allocate various perl stacks. This is an exact copy
376	* of perl.c:init_stacks, except that it uses less memory	432	* of perl.c:init_stacks, except that it uses less memory
377	* on the (sometimes correct) assumption that coroutines do	433	* on the (sometimes correct) assumption that coroutines do
378	* not usually need a lot of stackspace.	434	* not usually need a lot of stackspace.
379	*/	435	*/
		436	#if PREFER_PERL_FUNCTIONS
		437	# define coro_init_stacks init_stacks
		438	#else
380	static void	439	static void
381	coro_init_stacks ()	440	coro_init_stacks ()
382	{	441	{
383	PL_curstackinfo = new_stackinfo(96, 1024/sizeof(PERL_CONTEXT) - 1);	442	PL_curstackinfo = new_stackinfo(128, 1024/sizeof(PERL_CONTEXT));
384	PL_curstackinfo->si_type = PERLSI_MAIN;	443	PL_curstackinfo->si_type = PERLSI_MAIN;
385	PL_curstack = PL_curstackinfo->si_stack;	444	PL_curstack = PL_curstackinfo->si_stack;
386	PL_mainstack = PL_curstack; /* remember in case we switch stacks */	445	PL_mainstack = PL_curstack; /* remember in case we switch stacks */
387		446
388	PL_stack_base = AvARRAY(PL_curstack);	447	PL_stack_base = AvARRAY(PL_curstack);
389	PL_stack_sp = PL_stack_base;	448	PL_stack_sp = PL_stack_base;
390	PL_stack_max = PL_stack_base + AvMAX(PL_curstack);	449	PL_stack_max = PL_stack_base + AvMAX(PL_curstack);
391		450
392	New(50,PL_tmps_stack,96,SV*);	451	New(50,PL_tmps_stack,128,SV*);
393	PL_tmps_floor = -1;	452	PL_tmps_floor = -1;
394	PL_tmps_ix = -1;	453	PL_tmps_ix = -1;
395	PL_tmps_max = 96;	454	PL_tmps_max = 128;
396		455
397	New(54,PL_markstack,16,I32);	456	New(54,PL_markstack,32,I32);
398	PL_markstack_ptr = PL_markstack;	457	PL_markstack_ptr = PL_markstack;
399	PL_markstack_max = PL_markstack + 16;	458	PL_markstack_max = PL_markstack + 32;
400		459
401	#ifdef SET_MARK_OFFSET	460	#ifdef SET_MARK_OFFSET
402	SET_MARK_OFFSET;	461	SET_MARK_OFFSET;
403	#endif	462	#endif
404		463
405	New(54,PL_scopestack,16,I32);	464	New(54,PL_scopestack,32,I32);
406	PL_scopestack_ix = 0;	465	PL_scopestack_ix = 0;
407	PL_scopestack_max = 16;	466	PL_scopestack_max = 32;
408		467
409	New(54,PL_savestack,96,ANY);	468	New(54,PL_savestack,64,ANY);
410	PL_savestack_ix = 0;	469	PL_savestack_ix = 0;
411	PL_savestack_max = 96;	470	PL_savestack_max = 64;
412		471
413	#if !PERL_VERSION_ATLEAST (5,9,0)	472	#if !PERL_VERSION_ATLEAST (5,9,0)
414	New(54,PL_retstack,8,OP*);	473	New(54,PL_retstack,16,OP*);
415	PL_retstack_ix = 0;	474	PL_retstack_ix = 0;
416	PL_retstack_max = 8;	475	PL_retstack_max = 16;
417	#endif	476	#endif
418	}	477	}
		478	#endif
419		479
420	/*	480	/*
421	* destroy the stacks, the callchain etc...	481	* destroy the stacks, the callchain etc...
422	*/	482	*/
423	static void	483	static void
424	coro_destroy_stacks ()	484	coro_destroy_stacks ()
425	{	485	{
426	if (!IN_DESTRUCT)	486	if (!IN_DESTRUCT)
427	{	487	{
428	/* is this ugly, I ask? */	488	/* restore all saved variables and stuff */
429	LEAVE_SCOPE (0);	489	LEAVE_SCOPE (0);
		490	assert (PL_tmps_floor == -1);
430		491
431	/* sure it is, but more important: is it correct?? :/ */	492	/* free all temporaries */
432	FREETMPS;	493	FREETMPS;
		494	assert (PL_tmps_ix == -1);
433		495
		496	/* unwind all extra stacks */
434	/POPSTACK_TO (PL_mainstack);//D//use/	497	POPSTACK_TO (PL_mainstack);
		498
		499	/* unwind main stack */
		500	dounwind (-1);
435	}	501	}
436		502
437	while (PL_curstackinfo->si_next)	503	while (PL_curstackinfo->si_next)
438	PL_curstackinfo = PL_curstackinfo->si_next;	504	PL_curstackinfo = PL_curstackinfo->si_next;
439		505
440	while (PL_curstackinfo)	506	while (PL_curstackinfo)
441	{	507	{
442	PERL_SI *p = PL_curstackinfo->si_prev;	508	PERL_SI *p = PL_curstackinfo->si_prev;
443		509
444	{ /D//remove/
445	dSP;
446	SWITCHSTACK (PL_curstack, PL_curstackinfo->si_stack);
447	PUTBACK; /* possibly superfluous */
448	}
449
450	if (!IN_DESTRUCT)	510	if (!IN_DESTRUCT)
451	{
452	dounwind (-1);/D//remove/
453	SvREFCNT_dec (PL_curstackinfo->si_stack);	511	SvREFCNT_dec (PL_curstackinfo->si_stack);
454	}
455		512
456	Safefree (PL_curstackinfo->si_cxstack);	513	Safefree (PL_curstackinfo->si_cxstack);
457	Safefree (PL_curstackinfo);	514	Safefree (PL_curstackinfo);
458	PL_curstackinfo = p;	515	PL_curstackinfo = p;
459	}	516	}
…		…
465	#if !PERL_VERSION_ATLEAST (5,9,0)	522	#if !PERL_VERSION_ATLEAST (5,9,0)
466	Safefree (PL_retstack);	523	Safefree (PL_retstack);
467	#endif	524	#endif
468	}	525	}
469		526
		527	/ coroutine stack handling **********************************************/
		528
470	static void	529	static void
471	setup_coro (struct coro *coro)	530	setup_coro (struct coro *coro)
472	{	531	{
473	/*	532	/*
474	* emulate part of the perl startup here.	533	* emulate part of the perl startup here.
475	*/	534	*/
476		535
477	coro_init_stacks ();	536	coro_init_stacks ();
478		537
479	PL_curcop = 0;	538	PL_curcop = &PL_compiling;
480	PL_in_eval = 0;	539	PL_in_eval = EVAL_NULL;
481	PL_curpm = 0;	540	PL_curpm = 0;
		541	PL_localizing = 0;
		542	PL_dirty = 0;
		543	PL_restartop = 0;
482		544
483	{	545	{
484	dSP;	546	dSP;
485	LOGOP myop;	547	LOGOP myop;
486		548
487	/* I have no idea why this is needed, but it is */
488	PUSHMARK (SP);
489
490	SvREFCNT_dec (GvAV (PL_defgv));	549	SvREFCNT_dec (GvAV (PL_defgv));
491	GvAV (PL_defgv) = coro->args; coro->args = 0;	550	GvAV (PL_defgv) = coro->args; coro->args = 0;
492		551
493	Zero (&myop, 1, LOGOP);	552	Zero (&myop, 1, LOGOP);
494	myop.op_next = Nullop;	553	myop.op_next = Nullop;
495	myop.op_flags = OPf_WANT_VOID;	554	myop.op_flags = OPf_WANT_VOID;
496		555
497	PL_op = (OP *)&myop;
498
499	PUSHMARK (SP);	556	PUSHMARK (SP);
500	XPUSHs ((SV *)get_cv ("Coro::State::_coro_init", FALSE));	557	XPUSHs ((SV *)get_cv ("Coro::State::_coro_init", FALSE));
501	PUTBACK;	558	PUTBACK;
		559	PL_op = (OP *)&myop;
502	PL_op = PL_ppaddr[OP_ENTERSUB](aTHX);	560	PL_op = PL_ppaddr[OP_ENTERSUB](aTHX);
503	SPAGAIN;	561	SPAGAIN;
504
505	ENTER; /* necessary e.g. for dounwind */
506	}	562	}
		563
		564	ENTER; /* necessary e.g. for dounwind */
507	}	565	}
508		566
509	static void	567	static void
510	free_coro_mortal ()	568	free_coro_mortal ()
511	{	569	{
…		…
514	SvREFCNT_dec (coro_mortal);	572	SvREFCNT_dec (coro_mortal);
515	coro_mortal = 0;	573	coro_mortal = 0;
516	}	574	}
517	}	575	}
518		576
		577	/* inject a fake call to Coro::State::_cctx_init into the execution */
519	static void NOINLINE	578	static void NOINLINE
520	prepare_cctx (coro_cctx *cctx)	579	prepare_cctx (coro_cctx *cctx)
521	{	580	{
522	dSP;	581	dSP;
523	LOGOP myop;	582	LOGOP myop;
524		583
525	Zero (&myop, 1, LOGOP);	584	Zero (&myop, 1, LOGOP);
526	myop.op_next = PL_op;	585	myop.op_next = PL_op;
527	myop.op_flags = OPf_WANT_VOID;	586	myop.op_flags = OPf_WANT_VOID \| OPf_STACKED;
528
529	sv_setiv (get_sv ("Coro::State::_cctx", FALSE), PTR2IV (cctx));
530		587
531	PUSHMARK (SP);	588	PUSHMARK (SP);
		589	EXTEND (SP, 2);
		590	PUSHs (sv_2mortal (newSViv (PTR2IV (cctx))));
532	XPUSHs ((SV *)get_cv ("Coro::State::_cctx_init", FALSE));	591	PUSHs ((SV *)get_cv ("Coro::State::_cctx_init", FALSE));
533	PUTBACK;	592	PUTBACK;
		593	PL_op = (OP *)&myop;
534	PL_restartop = PL_ppaddr[OP_ENTERSUB](aTHX);	594	PL_op = PL_ppaddr[OP_ENTERSUB](aTHX);
535	SPAGAIN;	595	SPAGAIN;
536	}	596	}
537		597
538	static void	598	static void
539	coro_run (void *arg)	599	coro_run (void *arg)
540	{	600	{
541	/* coro_run is the alternative epilogue of transfer() */	601	/* coro_run is the alternative tail of transfer(), so unlock here. */
542	UNLOCK;	602	UNLOCK;
543		603
544	/*	604	/*
545	* this is a _very_ stripped down perl interpreter ;)	605	* this is a _very_ stripped down perl interpreter ;)
546	*/	606	*/
…		…
548		608
549	/* inject call to cctx_init */	609	/* inject call to cctx_init */
550	prepare_cctx ((coro_cctx *)arg);	610	prepare_cctx ((coro_cctx *)arg);
551		611
552	/* somebody will hit me for both perl_run and PL_restartop */	612	/* somebody will hit me for both perl_run and PL_restartop */
		613	PL_restartop = PL_op;
553	perl_run (PL_curinterp);	614	perl_run (PL_curinterp);
554		615
555	fputs ("FATAL: C coroutine fell over the edge of the world, aborting. Did you call exit in a coroutine?\n", stderr);	616	fputs ("FATAL: C coroutine fell over the edge of the world, aborting. Did you call exit in a coroutine?\n", stderr);
556	abort ();	617	abort ();
557	}	618	}
…		…
561	{	622	{
562	coro_cctx *cctx;	623	coro_cctx *cctx;
563		624
564	++cctx_count;	625	++cctx_count;
565		626
566	New (0, cctx, 1, coro_cctx);	627	Newz (0, cctx, 1, coro_cctx);
567		628
568	#if HAVE_MMAP	629	#if HAVE_MMAP
569		630
570	cctx->ssize = ((STACKSIZE * sizeof (long) + PAGESIZE - 1) / PAGESIZE + STACKGUARD) * PAGESIZE;	631	cctx->ssize = ((STACKSIZE * sizeof (long) + PAGESIZE - 1) / PAGESIZE + STACKGUARD) * PAGESIZE;
571	/* mmap suppsedly does allocate-on-write for us */	632	/* 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);	633	cctx->sptr = mmap (0, cctx->ssize, PROT_EXEC\|PROT_READ\|PROT_WRITE, MAP_PRIVATE\|MAP_ANONYMOUS, 0, 0);
573		634
574	if (cctx->sptr == (void *)-1)	635	if (cctx->sptr == (void *)-1)
575	{	636	{
576	perror ("FATAL: unable to mmap stack for coroutine");	637	perror ("FATAL: unable to mmap stack for coroutine");
…		…
605		666
606	return cctx;	667	return cctx;
607	}	668	}
608		669
609	static void	670	static void
610	cctx_free (coro_cctx *cctx)	671	cctx_destroy (coro_cctx *cctx)
611	{	672	{
612	if (!cctx)	673	if (!cctx)
613	return;	674	return;
614		675
615	--cctx_count;	676	--cctx_count;
…		…
632	{	693	{
633	coro_cctx *cctx;	694	coro_cctx *cctx;
634		695
635	if (cctx_first)	696	if (cctx_first)
636	{	697	{
637	--cctx_idle;
638	cctx = cctx_first;	698	cctx = cctx_first;
639	cctx_first = cctx->next;	699	cctx_first = cctx->next;
		700	--cctx_idle;
640	}	701	}
641	else	702	else
642	{	703	{
643	cctx = cctx_new ();	704	cctx = cctx_new ();
644	PL_op = PL_op->op_next;	705	PL_op = PL_op->op_next;
…		…
648	}	709	}
649		710
650	static void	711	static void
651	cctx_put (coro_cctx *cctx)	712	cctx_put (coro_cctx *cctx)
652	{	713	{
		714	/* free another cctx if overlimit */
		715	if (cctx_idle >= MAX_IDLE_CCTX)
		716	{
		717	coro_cctx *first = cctx_first;
		718	cctx_first = first->next;
		719	--cctx_idle;
		720
		721	assert (!first->inuse);
		722	cctx_destroy (first);
		723	}
		724
653	++cctx_idle;	725	++cctx_idle;
654	cctx->next = cctx_first;	726	cctx->next = cctx_first;
655	cctx_first = cctx;	727	cctx_first = cctx;
656	}	728	}
657		729
		730	/ coroutine switching ***************************************************/
		731
658	/* never call directly, always through the coro_state_transfer global variable */	732	/* never call directly, always through the coro_state_transfer global variable */
659	static void NOINLINE	733	static void NOINLINE
660	transfer (struct coro prev, struct coro next, int flags)	734	transfer (struct coro prev, struct coro next)
661	{	735	{
662	dSTACKLEVEL;	736	dSTACKLEVEL;
663		737
664	/* sometimes transfer is only called to set idle_sp */	738	/* sometimes transfer is only called to set idle_sp */
665	if (flags == TRANSFER_SET_STACKLEVEL)	739	if (!next)
		740	{
666	((coro_cctx *)prev)->idle_sp = STACKLEVEL;	741	((coro_cctx *)prev)->idle_sp = STACKLEVEL;
		742	assert (((coro_cctx )prev)->idle_te = PL_top_env); / just for the side-effect when asserts are enabled */
		743	}
667	else if (prev != next)	744	else if (prev != next)
668	{	745	{
669	coro_cctx *prev__cctx;	746	coro_cctx *prev__cctx;
670		747
		748	if (prev->flags & CF_NEW)
		749	{
		750	/* create a new empty context */
		751	Newz (0, prev->cctx, 1, coro_cctx);
		752	prev->cctx->inuse = 1;
		753	prev->flags &= ~CF_NEW;
		754	prev->flags \|= CF_RUNNING;
		755	}
		756
		757	/TODO: must not croak here /
		758	if (!prev->flags & CF_RUNNING)
		759	croak ("Coro::State::transfer called with non-running prev Coro::State, but can only transfer from running states");
		760
		761	if (next->flags & CF_RUNNING)
		762	croak ("Coro::State::transfer called with running next Coro::State, but can only transfer to inactive states");
		763
		764	if (next->flags & CF_DESTROYED)
		765	croak ("Coro::State::transfer called with destroyed next Coro::State, but can only transfer to inactive states");
		766
		767	prev->flags &= ~CF_RUNNING;
		768	next->flags \|= CF_RUNNING;
		769
671	LOCK;	770	LOCK;
672		771
673	if (next->mainstack)	772	if (next->flags & CF_NEW)
674	{	773	{
675	/* coroutine already started */	774	/* need to start coroutine */
676	SAVE (prev, flags);	775	next->flags &= ~CF_NEW;
677	LOAD (next);	776	/* first get rid of the old state */
		777	save_perl (prev);
		778	/* setup coroutine call */
		779	setup_coro (next);
		780	/* need a new stack */
		781	assert (!next->cctx);
678	}	782	}
679	else	783	else
680	{	784	{
681	/* need to start coroutine */	785	/* coroutine already started */
682	/* first get rid of the old state */	786	save_perl (prev);
683	SAVE (prev, -1);	787	load_perl (next);
684	/* setup coroutine call */
685	setup_coro (next);
686	/* need a stack */
687	next->cctx = 0;
688	}	788	}
689
690	if (!prev->cctx)
691	/* create a new empty context */
692	Newz (0, prev->cctx, 1, coro_cctx);
693		789
694	prev__cctx = prev->cctx;	790	prev__cctx = prev->cctx;
695		791
696	/* possibly "free" the cctx */	792	/* possibly "free" the cctx */
697	if (prev__cctx->idle_sp == STACKLEVEL)	793	if (prev__cctx->idle_sp == STACKLEVEL)
698	{	794	{
699	assert (PL_top_env == prev__cctx->top_env);//D	795	/* I assume that STACKLEVEL is a stronger indicator than PL_top_env changes */
		796	assert (("ERROR: current top_env must equal previous top_env", PL_top_env == prev__cctx->idle_te));
		797
		798	prev->cctx = 0;
		799
700	cctx_put (prev__cctx);	800	cctx_put (prev__cctx);
701	prev->cctx = 0;	801	prev__cctx->inuse = 0;
702	}	802	}
703		803
704	if (!next->cctx)	804	if (!next->cctx)
		805	{
705	next->cctx = cctx_get ();	806	next->cctx = cctx_get ();
		807	assert (!next->cctx->inuse);
		808	next->cctx->inuse = 1;
		809	}
706		810
707	if (prev__cctx != next->cctx)	811	if (prev__cctx != next->cctx)
708	{	812	{
709	prev__cctx->top_env = PL_top_env;	813	prev__cctx->top_env = PL_top_env;
710	PL_top_env = next->cctx->top_env;	814	PL_top_env = next->cctx->top_env;
711	coro_transfer (&prev__cctx->cctx, &next->cctx->cctx);	815	coro_transfer (&prev__cctx->cctx, &next->cctx->cctx);
712	}	816	}
713		817
714	free_coro_mortal ();	818	free_coro_mortal ();
715
716	UNLOCK;	819	UNLOCK;
717	}	820	}
718	}	821	}
719		822
720	struct transfer_args	823	struct transfer_args
721	{	824	{
722	struct coro prev, next;	825	struct coro prev, next;
723	int flags;
724	};	826	};
725		827
726	#define TRANSFER(ta) transfer ((ta).prev, (ta).next, (ta).flags)	828	#define TRANSFER(ta) transfer ((ta).prev, (ta).next)
727		829
		830	/ high level stuff ******************************************************/
		831
728	static void	832	static int
729	coro_state_destroy (struct coro *coro)	833	coro_state_destroy (struct coro *coro)
730	{	834	{
731	if (coro->refcnt--)	835	if (coro->flags & CF_DESTROYED)
732	return;	836	return 0;
		837
		838	coro->flags \|= CF_DESTROYED;
		839
		840	if (coro->flags & CF_READY)
		841	{
		842	/* reduce nready, as destroying a ready coro effectively unreadies it */
		843	/* alternative: look through all ready queues and remove it */
		844	LOCK;
		845	--coro_nready;
		846	UNLOCK;
		847	}
		848	else
		849	coro->flags \|= CF_READY; /* make sure it is NOT put into the readyqueue */
733		850
734	if (coro->mainstack && coro->mainstack != main_mainstack)	851	if (coro->mainstack && coro->mainstack != main_mainstack)
735	{	852	{
		853	assert (!(coro->flags & CF_RUNNING));
		854
736	struct coro temp;	855	struct coro temp;
		856	Zero (&temp, 1, struct coro);
		857	temp.save = CORO_SAVE_ALL;
737		858
738	SAVE ((&temp), TRANSFER_SAVE_ALL);	859	if (coro->flags & CF_RUNNING)
739	LOAD (coro);	860	croak ("FATAL: tried to destroy currently running coroutine");
		861
		862	save_perl (&temp);
		863	load_perl (coro);
740		864
741	coro_destroy_stacks ();	865	coro_destroy_stacks ();
742		866
743	LOAD ((&temp)); /* this will get rid of defsv etc.. */	867	load_perl (&temp); /* this will get rid of defsv etc.. */
744		868
745	coro->mainstack = 0;	869	coro->mainstack = 0;
746	}	870	}
747		871
748	cctx_free (coro->cctx);	872	cctx_destroy (coro->cctx);
749	SvREFCNT_dec (coro->args);	873	SvREFCNT_dec (coro->args);
750	Safefree (coro);	874
		875	return 1;
751	}	876	}
752		877
753	static int	878	static int
754	coro_state_clear (pTHX_ SV sv, MAGIC mg)	879	coro_state_free (pTHX_ SV sv, MAGIC mg)
755	{	880	{
756	struct coro coro = (struct coro )mg->mg_ptr;	881	struct coro coro = (struct coro )mg->mg_ptr;
757	mg->mg_ptr = 0;	882	mg->mg_ptr = 0;
758		883
		884	if (--coro->refcnt < 0)
		885	{
759	coro_state_destroy (coro);	886	coro_state_destroy (coro);
		887	Safefree (coro);
		888	}
760		889
761	return 0;	890	return 0;
762	}	891	}
763		892
764	static int	893	static int
…		…
771	return 0;	900	return 0;
772	}	901	}
773		902
774	static MGVTBL coro_state_vtbl = {	903	static MGVTBL coro_state_vtbl = {
775	0, 0, 0, 0,	904	0, 0, 0, 0,
776	coro_state_clear,	905	coro_state_free,
777	0,	906	0,
778	#ifdef MGf_DUP	907	#ifdef MGf_DUP
779	coro_state_dup,	908	coro_state_dup,
780	#else	909	#else
781	# define MGf_DUP 0	910	# define MGf_DUP 0
…		…
803	assert (mg->mg_type == PERL_MAGIC_ext);	932	assert (mg->mg_type == PERL_MAGIC_ext);
804	return (struct coro *)mg->mg_ptr;	933	return (struct coro *)mg->mg_ptr;
805	}	934	}
806		935
807	static void	936	static void
808	prepare_transfer (struct transfer_args ta, SV prev, SV *next, int flags)	937	prepare_transfer (struct transfer_args ta, SV prev_sv, SV *next_sv)
809	{	938	{
810	ta->prev = SvSTATE (prev);	939	ta->prev = SvSTATE (prev_sv);
811	ta->next = SvSTATE (next);	940	ta->next = SvSTATE (next_sv);
812	ta->flags = flags;
813	}	941	}
814		942
815	static void	943	static void
816	api_transfer (SV prev, SV next, int flags)	944	api_transfer (SV prev_sv, SV next_sv)
817	{	945	{
818	dTHX;
819	struct transfer_args ta;	946	struct transfer_args ta;
820		947
821	prepare_transfer (&ta, prev, next, flags);	948	prepare_transfer (&ta, prev_sv, next_sv);
822	TRANSFER (ta);	949	TRANSFER (ta);
823	}	950	}
824		951
		952	static int
		953	api_save (SV *coro_sv, int new_save)
		954	{
		955	struct coro *coro = SvSTATE (coro_sv);
		956	int old_save = coro->save;
		957
		958	if (new_save >= 0)
		959	coro->save = new_save;
		960
		961	return old_save;
		962	}
		963
825	/ Coro ******************************************************************/	964	/ Coro ******************************************************************/
826		965
827	#define PRIO_MAX 3
828	#define PRIO_HIGH 1
829	#define PRIO_NORMAL 0
830	#define PRIO_LOW -1
831	#define PRIO_IDLE -3
832	#define PRIO_MIN -4
833
834	/* for Coro.pm */
835	static GV coro_current, coro_idle;
836	static AV *coro_ready [PRIO_MAX-PRIO_MIN+1];
837	static int coro_nready;
838
839	static void	966	static void
840	coro_enq (SV *sv)	967	coro_enq (SV *coro_sv)
841	{	968	{
842	int prio;
843
844	if (SvTYPE (sv) != SVt_PVHV)
845	croak ("Coro::ready tried to enqueue something that is not a coroutine");
846
847	prio = SvSTATE (sv)->prio;
848
849	av_push (coro_ready [prio - PRIO_MIN], sv);	969	av_push (coro_ready [SvSTATE (coro_sv)->prio - PRIO_MIN], coro_sv);
850	coro_nready++;
851	}	970	}
852		971
853	static SV *	972	static SV *
854	coro_deq (int min_prio)	973	coro_deq (int min_prio)
855	{	974	{
…		…
859	if (min_prio < 0)	978	if (min_prio < 0)
860	min_prio = 0;	979	min_prio = 0;
861		980
862	for (prio = PRIO_MAX - PRIO_MIN + 1; --prio >= min_prio; )	981	for (prio = PRIO_MAX - PRIO_MIN + 1; --prio >= min_prio; )
863	if (AvFILLp (coro_ready [prio]) >= 0)	982	if (AvFILLp (coro_ready [prio]) >= 0)
864	{
865	coro_nready--;
866	return av_shift (coro_ready [prio]);	983	return av_shift (coro_ready [prio]);
867	}
868		984
869	return 0;	985	return 0;
870	}	986	}
871		987
872	static void	988	static int
873	api_ready (SV *coro)	989	api_ready (SV *coro_sv)
874	{	990	{
875	dTHX;	991	struct coro *coro;
876		992
877	if (SvROK (coro))	993	if (SvROK (coro_sv))
878	coro = SvRV (coro);	994	coro_sv = SvRV (coro_sv);
		995
		996	coro = SvSTATE (coro_sv);
		997
		998	if (coro->flags & CF_READY)
		999	return 0;
		1000
		1001	coro->flags \|= CF_READY;
879		1002
880	LOCK;	1003	LOCK;
881	coro_enq (SvREFCNT_inc (coro));	1004	coro_enq (SvREFCNT_inc (coro_sv));
		1005	++coro_nready;
882	UNLOCK;	1006	UNLOCK;
		1007
		1008	return 1;
		1009	}
		1010
		1011	static int
		1012	api_is_ready (SV *coro_sv)
		1013	{
		1014	return !!(SvSTATE (coro_sv)->flags & CF_READY);
883	}	1015	}
884		1016
885	static void	1017	static void
886	prepare_schedule (struct transfer_args *ta)	1018	prepare_schedule (struct transfer_args *ta)
887	{	1019	{
888	SV current, prev, *next;	1020	SV prev_sv, next_sv;
889
890	current = GvSV (coro_current);
891		1021
892	for (;;)	1022	for (;;)
893	{	1023	{
894	LOCK;	1024	LOCK;
895	next = coro_deq (PRIO_MIN);	1025	next_sv = coro_deq (PRIO_MIN);
		1026
		1027	/* nothing to schedule: call the idle handler */
		1028	if (!next_sv)
		1029	{
		1030	UNLOCK;
		1031	dSP;
		1032
		1033	ENTER;
		1034	SAVETMPS;
		1035
		1036	PUSHMARK (SP);
		1037	PUTBACK;
		1038	call_sv (get_sv ("Coro::idle", FALSE), G_DISCARD);
		1039
		1040	FREETMPS;
		1041	LEAVE;
		1042	continue;
		1043	}
		1044
		1045	ta->next = SvSTATE (next_sv);
		1046
		1047	/* cannot transfer to destroyed coros, skip and look for next */
		1048	if (ta->next->flags & CF_DESTROYED)
		1049	{
		1050	UNLOCK;
		1051	SvREFCNT_dec (next_sv);
		1052	/* coro_nready is already taken care of by destroy */
		1053	continue;
		1054	}
		1055
		1056	--coro_nready;
896	UNLOCK;	1057	UNLOCK;
897
898	if (next)
899	break;	1058	break;
900
901	{
902	dSP;
903
904	ENTER;
905	SAVETMPS;
906
907	PUSHMARK (SP);
908	PUTBACK;
909	call_sv (GvSV (coro_idle), G_DISCARD);
910
911	FREETMPS;
912	LEAVE;
913	}	1059	}
914	}
915
916	prev = SvRV (current);
917	SvRV (current) = next;
918		1060
919	/* free this only after the transfer */	1061	/* free this only after the transfer */
		1062	prev_sv = SvRV (coro_current);
		1063	SvRV_set (coro_current, next_sv);
		1064	ta->prev = SvSTATE (prev_sv);
		1065
		1066	assert (ta->next->flags & CF_READY);
		1067	ta->next->flags &= ~CF_READY;
		1068
920	LOCK;	1069	LOCK;
921	free_coro_mortal ();	1070	free_coro_mortal ();
		1071	coro_mortal = prev_sv;
922	UNLOCK;	1072	UNLOCK;
923	coro_mortal = prev;
924
925	ta->prev = SvSTATE (prev);
926	ta->next = SvSTATE (next);
927	ta->flags = TRANSFER_SAVE_ALL;
928	}	1073	}
929		1074
930	static void	1075	static void
931	prepare_cede (struct transfer_args *ta)	1076	prepare_cede (struct transfer_args *ta)
932	{	1077	{
933	LOCK;	1078	api_ready (coro_current);
934	coro_enq (SvREFCNT_inc (SvRV (GvSV (coro_current))));
935	UNLOCK;
936
937	prepare_schedule (ta);	1079	prepare_schedule (ta);
938	}	1080	}
939		1081
		1082	static int
		1083	prepare_cede_notself (struct transfer_args *ta)
		1084	{
		1085	if (coro_nready)
		1086	{
		1087	SV *prev = SvRV (coro_current);
		1088	prepare_schedule (ta);
		1089	api_ready (prev);
		1090	return 1;
		1091	}
		1092	else
		1093	return 0;
		1094	}
		1095
940	static void	1096	static void
941	api_schedule (void)	1097	api_schedule (void)
942	{	1098	{
943	dTHX;
944	struct transfer_args ta;	1099	struct transfer_args ta;
945		1100
946	prepare_schedule (&ta);	1101	prepare_schedule (&ta);
947	TRANSFER (ta);	1102	TRANSFER (ta);
948	}	1103	}
949		1104
950	static void	1105	static int
951	api_cede (void)	1106	api_cede (void)
952	{	1107	{
953	dTHX;
954	struct transfer_args ta;	1108	struct transfer_args ta;
955		1109
956	prepare_cede (&ta);	1110	prepare_cede (&ta);
		1111
		1112	if (ta.prev != ta.next)
		1113	{
957	TRANSFER (ta);	1114	TRANSFER (ta);
		1115	return 1;
		1116	}
		1117	else
		1118	return 0;
		1119	}
		1120
		1121	static int
		1122	api_cede_notself (void)
		1123	{
		1124	struct transfer_args ta;
		1125
		1126	if (prepare_cede_notself (&ta))
		1127	{
		1128	TRANSFER (ta);
		1129	return 1;
		1130	}
		1131	else
		1132	return 0;
958	}	1133	}
959		1134
960	MODULE = Coro::State PACKAGE = Coro::State	1135	MODULE = Coro::State PACKAGE = Coro::State
961		1136
962	PROTOTYPES: DISABLE	1137	PROTOTYPES: DISABLE
…		…
968	#endif	1143	#endif
969	BOOT_PAGESIZE;	1144	BOOT_PAGESIZE;
970		1145
971	coro_state_stash = gv_stashpv ("Coro::State", TRUE);	1146	coro_state_stash = gv_stashpv ("Coro::State", TRUE);
972		1147
973	newCONSTSUB (coro_state_stash, "SAVE_DEFAV", newSViv (TRANSFER_SAVE_DEFAV));	1148	newCONSTSUB (coro_state_stash, "SAVE_DEFAV", newSViv (CORO_SAVE_DEFAV));
974	newCONSTSUB (coro_state_stash, "SAVE_DEFSV", newSViv (TRANSFER_SAVE_DEFSV));	1149	newCONSTSUB (coro_state_stash, "SAVE_DEFSV", newSViv (CORO_SAVE_DEFSV));
975	newCONSTSUB (coro_state_stash, "SAVE_ERRSV", newSViv (TRANSFER_SAVE_ERRSV));	1150	newCONSTSUB (coro_state_stash, "SAVE_ERRSV", newSViv (CORO_SAVE_ERRSV));
		1151	newCONSTSUB (coro_state_stash, "SAVE_IRSSV", newSViv (CORO_SAVE_IRSSV));
		1152	newCONSTSUB (coro_state_stash, "SAVE_ALL", newSViv (CORO_SAVE_ALL));
976		1153
977	main_mainstack = PL_mainstack;	1154	main_mainstack = PL_mainstack;
978		1155
979	coroapi.ver = CORO_API_VERSION;	1156	coroapi.ver = CORO_API_VERSION;
980	coroapi.transfer = api_transfer;	1157	coroapi.transfer = api_transfer;
…		…
990	HV *hv;	1167	HV *hv;
991	int i;	1168	int i;
992		1169
993	Newz (0, coro, 1, struct coro);	1170	Newz (0, coro, 1, struct coro);
994	coro->args = newAV ();	1171	coro->args = newAV ();
		1172	coro->save = CORO_SAVE_ALL;
		1173	coro->flags = CF_NEW;
995		1174
996	hv = newHV ();	1175	hv = newHV ();
997	sv_magicext ((SV )hv, 0, PERL_MAGIC_ext, &coro_state_vtbl, (char )coro, 0)->mg_flags \|= MGf_DUP;	1176	sv_magicext ((SV )hv, 0, PERL_MAGIC_ext, &coro_state_vtbl, (char )coro, 0)->mg_flags \|= MGf_DUP;
998	RETVAL = sv_bless (newRV_noinc ((SV *)hv), gv_stashpv (klass, 1));	1177	RETVAL = sv_bless (newRV_noinc ((SV *)hv), gv_stashpv (klass, 1));
999		1178
1000	for (i = 1; i < items; i++)	1179	for (i = 1; i < items; i++)
1001	av_push (coro->args, newSVsv (ST (i)));	1180	av_push (coro->args, newSVsv (ST (i)));
1002	}	1181	}
1003	OUTPUT:	1182	OUTPUT:
		1183	RETVAL
		1184
		1185	int
		1186	save (SV *coro, int new_save = -1)
		1187	CODE:
		1188	RETVAL = api_save (coro, new_save);
		1189	OUTPUT:
1004	RETVAL	1190	RETVAL
1005		1191
1006	void	1192	void
1007	_set_stacklevel (...)	1193	_set_stacklevel (...)
1008	ALIAS:	1194	ALIAS:
1009	Coro::State::transfer = 1	1195	Coro::State::transfer = 1
1010	Coro::schedule = 2	1196	Coro::schedule = 2
1011	Coro::cede = 3	1197	Coro::cede = 3
1012	Coro::Cont::yield = 4	1198	Coro::cede_notself = 4
1013	CODE:	1199	CODE:
1014	{	1200	{
1015	struct transfer_args ta;	1201	struct transfer_args ta;
1016		1202
1017	switch (ix)	1203	switch (ix)
1018	{	1204	{
1019	case 0:	1205	case 0:
1020	ta.prev = (struct coro )INT2PTR (coro_cctx , SvIV (ST (0)));	1206	ta.prev = (struct coro )INT2PTR (coro_cctx , SvIV (ST (0)));
1021	ta.next = 0;	1207	ta.next = 0;
1022	ta.flags = TRANSFER_SET_STACKLEVEL;
1023	break;	1208	break;
1024		1209
1025	case 1:	1210	case 1:
1026	if (items != 3)	1211	if (items != 2)
1027	croak ("Coro::State::transfer(prev,next,flags) expects three arguments, not %d", items);	1212	croak ("Coro::State::transfer (prev,next) expects two arguments, not %d", items);
1028		1213
1029	prepare_transfer (&ta, ST (0), ST (1), SvIV (ST (2)));	1214	prepare_transfer (&ta, ST (0), ST (1));
1030	break;	1215	break;
1031		1216
1032	case 2:	1217	case 2:
1033	prepare_schedule (&ta);	1218	prepare_schedule (&ta);
1034	break;	1219	break;
…		…
1036	case 3:	1221	case 3:
1037	prepare_cede (&ta);	1222	prepare_cede (&ta);
1038	break;	1223	break;
1039		1224
1040	case 4:	1225	case 4:
1041	{	1226	if (!prepare_cede_notself (&ta))
1042	SV *yieldstack;	1227	XSRETURN_EMPTY;
1043	SV *sv;
1044	AV *defav = GvAV (PL_defgv);
1045		1228
1046	yieldstack = *hv_fetch (
1047	(HV *)SvRV (GvSV (coro_current)),
1048	"yieldstack", sizeof ("yieldstack") - 1,
1049	0
1050	);
1051
1052	/* set up @_ -- ugly */
1053	av_clear (defav);
1054	av_fill (defav, items - 1);
1055	while (items--)
1056	av_store (defav, items, SvREFCNT_inc (ST(items)));
1057
1058	sv = av_pop ((AV *)SvRV (yieldstack));
1059	ta.prev = SvSTATE (av_fetch ((AV )SvRV (sv), 0, 0));
1060	ta.next = SvSTATE (av_fetch ((AV )SvRV (sv), 1, 0));
1061	ta.flags = 0;
1062	SvREFCNT_dec (sv);
1063	}
1064	break;	1229	break;
1065
1066	}	1230	}
1067		1231
		1232	BARRIER;
1068	TRANSFER (ta);	1233	TRANSFER (ta);
1069	}
1070		1234
1071	void	1235	if (GIMME_V != G_VOID && ta.next != ta.prev)
1072	_clone_state_from (SV dst, SV src)	1236	XSRETURN_YES;
		1237	}
		1238
		1239	bool
		1240	_destroy (SV *coro_sv)
1073	CODE:	1241	CODE:
1074	{	1242	RETVAL = coro_state_destroy (SvSTATE (coro_sv));
1075	struct coro *coro_src = SvSTATE (src);	1243	OUTPUT:
1076		1244	RETVAL
1077	sv_unmagic (SvRV (dst), PERL_MAGIC_ext);
1078
1079	++coro_src->refcnt;
1080	sv_magicext (SvRV (dst), 0, PERL_MAGIC_ext, &coro_state_vtbl, (char *)coro_src, 0)->mg_flags \|= MGf_DUP;
1081	}
1082		1245
1083	void	1246	void
1084	_exit (code)	1247	_exit (code)
1085	int code	1248	int code
1086	PROTOTYPE: $	1249	PROTOTYPE: $
…		…
1114	newCONSTSUB (coro_stash, "PRIO_NORMAL", newSViv (PRIO_NORMAL));	1277	newCONSTSUB (coro_stash, "PRIO_NORMAL", newSViv (PRIO_NORMAL));
1115	newCONSTSUB (coro_stash, "PRIO_LOW", newSViv (PRIO_LOW));	1278	newCONSTSUB (coro_stash, "PRIO_LOW", newSViv (PRIO_LOW));
1116	newCONSTSUB (coro_stash, "PRIO_IDLE", newSViv (PRIO_IDLE));	1279	newCONSTSUB (coro_stash, "PRIO_IDLE", newSViv (PRIO_IDLE));
1117	newCONSTSUB (coro_stash, "PRIO_MIN", newSViv (PRIO_MIN));	1280	newCONSTSUB (coro_stash, "PRIO_MIN", newSViv (PRIO_MIN));
1118		1281
1119	coro_current = gv_fetchpv ("Coro::current", TRUE, SVt_PV);	1282	coro_current = get_sv ("Coro::current", FALSE);
1120	coro_idle = gv_fetchpv ("Coro::idle" , TRUE, SVt_PV);	1283	SvREADONLY_on (coro_current);
1121		1284
1122	for (i = PRIO_MAX - PRIO_MIN + 1; i--; )	1285	for (i = PRIO_MAX - PRIO_MIN + 1; i--; )
1123	coro_ready[i] = newAV ();	1286	coro_ready[i] = newAV ();
1124		1287
1125	{	1288	{
1126	SV *sv = perl_get_sv("Coro::API", 1);	1289	SV *sv = perl_get_sv("Coro::API", 1);
1127		1290
1128	coroapi.schedule = api_schedule;	1291	coroapi.schedule = api_schedule;
		1292	coroapi.save = api_save;
1129	coroapi.cede = api_cede;	1293	coroapi.cede = api_cede;
		1294	coroapi.cede_notself = api_cede_notself;
1130	coroapi.ready = api_ready;	1295	coroapi.ready = api_ready;
		1296	coroapi.is_ready = api_is_ready;
1131	coroapi.nready = &coro_nready;	1297	coroapi.nready = &coro_nready;
1132	coroapi.current = coro_current;	1298	coroapi.current = coro_current;
1133		1299
1134	GCoroAPI = &coroapi;	1300	GCoroAPI = &coroapi;
1135	sv_setiv (sv, (IV)&coroapi);	1301	sv_setiv (sv, (IV)&coroapi);
1136	SvREADONLY_on (sv);	1302	SvREADONLY_on (sv);
1137	}	1303	}
1138	}	1304	}
		1305
		1306	void
		1307	_set_current (SV *current)
		1308	PROTOTYPE: $
		1309	CODE:
		1310	SvREFCNT_dec (SvRV (coro_current));
		1311	SvRV_set (coro_current, SvREFCNT_inc (SvRV (current)));
1139		1312
1140	int	1313	int
1141	prio (Coro::State coro, int newprio = 0)	1314	prio (Coro::State coro, int newprio = 0)
1142	ALIAS:	1315	ALIAS:
1143	nice = 1	1316	nice = 1
…		…
1146	RETVAL = coro->prio;	1319	RETVAL = coro->prio;
1147		1320
1148	if (items > 1)	1321	if (items > 1)
1149	{	1322	{
1150	if (ix)	1323	if (ix)
1151	newprio += coro->prio;	1324	newprio = coro->prio - newprio;
1152		1325
1153	if (newprio < PRIO_MIN) newprio = PRIO_MIN;	1326	if (newprio < PRIO_MIN) newprio = PRIO_MIN;
1154	if (newprio > PRIO_MAX) newprio = PRIO_MAX;	1327	if (newprio > PRIO_MAX) newprio = PRIO_MAX;
1155		1328
1156	coro->prio = newprio;	1329	coro->prio = newprio;
1157	}	1330	}
1158	}	1331	}
		1332	OUTPUT:
		1333	RETVAL
1159		1334
1160	void	1335	SV *
1161	ready (SV *self)	1336	ready (SV *self)
1162	PROTOTYPE: $	1337	PROTOTYPE: $
1163	CODE:	1338	CODE:
1164	api_ready (self);	1339	RETVAL = boolSV (api_ready (self));
		1340	OUTPUT:
		1341	RETVAL
		1342
		1343	SV *
		1344	is_ready (SV *self)
		1345	PROTOTYPE: $
		1346	CODE:
		1347	RETVAL = boolSV (api_is_ready (self));
		1348	OUTPUT:
		1349	RETVAL
1165		1350
1166	int	1351	int
1167	nready (...)	1352	nready (...)
1168	PROTOTYPE:	1353	PROTOTYPE:
1169	CODE:	1354	CODE:
…		…
1175		1360
1176	SV *	1361	SV *
1177	_get_state ()	1362	_get_state ()
1178	CODE:	1363	CODE:
1179	{	1364	{
1180	struct {	1365	struct io_state *data;
1181	int errorno;
1182	int laststype;
1183	int laststatval;
1184	Stat_t statcache;
1185	} data;
1186		1366
		1367	RETVAL = newSV (sizeof (struct io_state));
		1368	data = (struct io_state *)SvPVX (RETVAL);
		1369	SvCUR_set (RETVAL, sizeof (struct io_state));
		1370	SvPOK_only (RETVAL);
		1371
1187	data.errorno = errno;	1372	data->errorno = errno;
1188	data.laststype = PL_laststype;	1373	data->laststype = PL_laststype;
1189	data.laststatval = PL_laststatval;	1374	data->laststatval = PL_laststatval;
1190	data.statcache = PL_statcache;	1375	data->statcache = PL_statcache;
1191
1192	RETVAL = newSVpvn ((char *)&data, sizeof data);
1193	}	1376	}
1194	OUTPUT:	1377	OUTPUT:
1195	RETVAL	1378	RETVAL
1196		1379
1197	void	1380	void
1198	_set_state (char *data_)	1381	_set_state (char *data_)
1199	PROTOTYPE: $	1382	PROTOTYPE: $
1200	CODE:	1383	CODE:
1201	{	1384	{
1202	struct {	1385	struct io_state data = (void )data_;
1203	int errorno;
1204	int laststype;
1205	int laststatval;
1206	Stat_t statcache;
1207	} data = (void )data_;
1208		1386
1209	errno = data->errorno;	1387	errno = data->errorno;
1210	PL_laststype = data->laststype;	1388	PL_laststype = data->laststype;
1211	PL_laststatval = data->laststatval;	1389	PL_laststatval = data->laststatval;
1212	PL_statcache = data->statcache;	1390	PL_statcache = data->statcache;
1213	}	1391	}
		1392

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Comparing Coro/Coro/State.xs (file contents): Revision 1.110 by root, Tue Nov 28 23:08:07 2006 UTC vs. Revision 1.138 by root, Sun Jan 14 20:49:45 2007 UTC

Diff Legend

Comparing Coro/Coro/State.xs (file contents):
Revision 1.110 by root, Tue Nov 28 23:08:07 2006 UTC vs.
Revision 1.138 by root, Sun Jan 14 20:49:45 2007 UTC