[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 1.135 by root, Fri Jan 5 18:25:51 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	struct io_state
		118	{
		119	int errorno;
		120	I32 laststype;
		121	int laststatval;
		122	Stat_t statcache;
		123	};
		124
103	static struct CoroAPI coroapi;	125	static struct CoroAPI coroapi;
104	static AV main_mainstack; / used to differentiate between $main and others */	126	static AV main_mainstack; / used to differentiate between $main and others */
105	static HV coro_state_stash, coro_stash;	127	static HV coro_state_stash, coro_stash;
106	static SV coro_mortal; / will be freed after next transfer */	128	static SV coro_mortal; / will be freed after next transfer */
107		129
…		…
115	/* the stack */	137	/* the stack */
116	void *sptr;	138	void *sptr;
117	long ssize; /* positive == mmap, otherwise malloc */	139	long ssize; /* positive == mmap, otherwise malloc */
118		140
119	/* cpu state */	141	/* cpu state */
120	void idle_sp; / sp of top-level transfer/schedule/cede call */	142	void idle_sp; / sp of top-level transfer/schedule/cede call */
		143	JMPENV idle_te; / same as idle_sp, but for top_env, TODO: remove once stable */
121	JMPENV *top_env;	144	JMPENV *top_env;
122	coro_context cctx;	145	coro_context cctx;
123		146
		147	int inuse;
		148
124	#if USE_VALGRIND	149	#if USE_VALGRIND
125	int valgrind_id;	150	int valgrind_id;
126	#endif	151	#endif
127	} coro_cctx;	152	} coro_cctx;
		153
		154	enum {
		155	CF_RUNNING = 0x0001, /* coroutine is running */
		156	CF_READY = 0x0002, /* coroutine is ready */
		157	CF_NEW = 0x0004, /* has never been switched to */
		158	CF_DESTROYED = 0x0008, /* coroutine data has been freed */
		159	};
128		160
129	/* this is a structure representing a perl-level coroutine */	161	/* this is a structure representing a perl-level coroutine */
130	struct coro {	162	struct coro {
131	/* the c coroutine allocated to this perl coroutine, if any */	163	/* the c coroutine allocated to this perl coroutine, if any */
132	coro_cctx *cctx;	164	coro_cctx *cctx;
133		165
134	/* data associated with this coroutine (initial args) */	166	/* data associated with this coroutine (initial args) */
135	AV *args;	167	AV *args;
136	int refcnt;	168	int refcnt;
		169	int save; /* CORO_SAVE flags */
		170	int flags; /* CF_ flags */
137		171
138	/* optionally saved, might be zero */	172	/* optionally saved, might be zero */
139	AV *defav;	173	AV defav; / @_ */
140	SV *defsv;	174	SV defsv; / $_ */
141	SV *errsv;	175	SV errsv; / $@ */
		176	SV irssv; / $/ */
		177	SV irssv_sv; / real $/ cache */
142		178
143	#define VAR(name,type) type name;	179	#define VAR(name,type) type name;
144	# include "state.h"	180	# include "state.h"
145	#undef VAR	181	#undef VAR
146		182
…		…
232		268
233	if (mg && AvFILLp ((av = (AV *)mg->mg_obj)) >= 0)	269	if (mg && AvFILLp ((av = (AV *)mg->mg_obj)) >= 0)
234	CvPADLIST (cv) = (AV *)AvARRAY (av)[AvFILLp (av)--];	270	CvPADLIST (cv) = (AV *)AvARRAY (av)[AvFILLp (av)--];
235	else	271	else
236	{	272	{
237	#if 0	273	#if PREFER_PERL_FUNCTIONS
238	/* this is probably cleaner, but also slower? */	274	/* this is probably cleaner, but also slower? */
239	CV *cp = Perl_cv_clone (cv);	275	CV *cp = Perl_cv_clone (cv);
240	CvPADLIST (cv) = CvPADLIST (cp);	276	CvPADLIST (cv) = CvPADLIST (cp);
241	CvPADLIST (cp) = 0;	277	CvPADLIST (cp) = 0;
242	SvREFCNT_dec (cp);	278	SvREFCNT_dec (cp);
…		…
269	}	305	}
270		306
271	#define SB do {	307	#define SB do {
272	#define SE } while (0)	308	#define SE } while (0)
273		309
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	310	#define REPLACE_SV(sv,val) SB SvREFCNT_dec (sv); (sv) = (val); (val) = 0; SE
278		311
279	static void	312	static void
280	load_state(Coro__State c)	313	load_perl (Coro__State c)
281	{	314	{
282	#define VAR(name,type) PL_ ## name = c->name;	315	#define VAR(name,type) PL_ ## name = c->name;
283	# include "state.h"	316	# include "state.h"
284	#undef VAR	317	#undef VAR
285		318
286	if (c->defav) REPLACE_SV (GvAV (PL_defgv), c->defav);	319	if (c->defav) REPLACE_SV (GvAV (PL_defgv), c->defav);
287	if (c->defsv) REPLACE_SV (DEFSV , c->defsv);	320	if (c->defsv) REPLACE_SV (DEFSV , c->defsv);
288	if (c->errsv) REPLACE_SV (ERRSV , c->errsv);	321	if (c->errsv) REPLACE_SV (ERRSV , c->errsv);
		322	if (c->irssv)
		323	{
		324	if (c->irssv == PL_rs \|\| sv_eq (PL_rs, c->irssv))
		325	SvREFCNT_dec (c->irssv);
		326	else
		327	{
		328	REPLACE_SV (PL_rs, c->irssv);
		329	if (!c->irssv_sv) c->irssv_sv = get_sv ("/", 0);
		330	sv_setsv (c->irssv_sv, PL_rs);
		331	}
		332	}
289		333
290	{	334	{
291	dSP;	335	dSP;
292	CV *cv;	336	CV *cv;
293		337
…		…
302	PUTBACK;	346	PUTBACK;
303	}	347	}
304	}	348	}
305		349
306	static void	350	static void
307	save_state(Coro__State c, int flags)	351	save_perl (Coro__State c)
308	{	352	{
309	{	353	{
310	dSP;	354	dSP;
311	I32 cxix = cxstack_ix;	355	I32 cxix = cxstack_ix;
312	PERL_CONTEXT *ccstk = cxstack;	356	PERL_CONTEXT *ccstk = cxstack;
…		…
315	/*	359	/*
316	* the worst thing you can imagine happens first - we have to save	360	* the worst thing you can imagine happens first - we have to save
317	* (and reinitialize) all cv's in the whole callchain :(	361	* (and reinitialize) all cv's in the whole callchain :(
318	*/	362	*/
319		363
		364	EXTEND (SP, 3 + 1);
320	PUSHs (Nullsv);	365	PUSHs (Nullsv);
321	/* this loop was inspired by pp_caller */	366	/* this loop was inspired by pp_caller */
322	for (;;)	367	for (;;)
323	{	368	{
324	while (cxix >= 0)	369	while (cxix >= 0)
325	{	370	{
326	PERL_CONTEXT *cx = &ccstk[cxix--];	371	PERL_CONTEXT *cx = &ccstk[cxix--];
327		372
328	if (CxTYPE(cx) == CXt_SUB)	373	if (CxTYPE (cx) == CXt_SUB)
329	{	374	{
330	CV *cv = cx->blk_sub.cv;	375	CV *cv = cx->blk_sub.cv;
331		376
332	if (CvDEPTH (cv))	377	if (CvDEPTH (cv))
333	{	378	{
334	EXTEND (SP, 3);	379	EXTEND (SP, 3);
335
336	PUSHs ((SV *)CvPADLIST(cv));	380	PUSHs ((SV *)CvPADLIST (cv));
337	PUSHs (INT2PTR (SV *, CvDEPTH (cv)));	381	PUSHs (INT2PTR (SV *, CvDEPTH (cv)));
338	PUSHs ((SV *)cv);	382	PUSHs ((SV *)cv);
339		383
340	CvDEPTH (cv) = 0;	384	CvDEPTH (cv) = 0;
341	get_padlist (cv);	385	get_padlist (cv);
342	}	386	}
343	}	387	}
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	}	388	}
353		389
354	if (top_si->si_type == PERLSI_MAIN)	390	if (top_si->si_type == PERLSI_MAIN)
355	break;	391	break;
356		392
…		…
360	}	396	}
361		397
362	PUTBACK;	398	PUTBACK;
363	}	399	}
364		400
365	c->defav = flags & TRANSFER_SAVE_DEFAV ? (AV *)SvREFCNT_inc (GvAV (PL_defgv)) : 0;	401	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;	402	c->defsv = c->save & CORO_SAVE_DEFSV ? SvREFCNT_inc (DEFSV) : 0;
367	c->errsv = flags & TRANSFER_SAVE_ERRSV ? SvREFCNT_inc (ERRSV) : 0;	403	c->errsv = c->save & CORO_SAVE_ERRSV ? SvREFCNT_inc (ERRSV) : 0;
		404	c->irssv = c->save & CORO_SAVE_IRSSV ? SvREFCNT_inc (PL_rs) : 0;
368		405
369	#define VAR(name,type)c->name = PL_ ## name;	406	#define VAR(name,type)c->name = PL_ ## name;
370	# include "state.h"	407	# include "state.h"
371	#undef VAR	408	#undef VAR
372	}	409	}
…		…
375	* allocate various perl stacks. This is an exact copy	412	* allocate various perl stacks. This is an exact copy
376	* of perl.c:init_stacks, except that it uses less memory	413	* of perl.c:init_stacks, except that it uses less memory
377	* on the (sometimes correct) assumption that coroutines do	414	* on the (sometimes correct) assumption that coroutines do
378	* not usually need a lot of stackspace.	415	* not usually need a lot of stackspace.
379	*/	416	*/
		417	#if PREFER_PERL_FUNCTIONS
		418	# define coro_init_stacks init_stacks
		419	#else
380	static void	420	static void
381	coro_init_stacks ()	421	coro_init_stacks ()
382	{	422	{
383	PL_curstackinfo = new_stackinfo(96, 1024/sizeof(PERL_CONTEXT) - 1);	423	PL_curstackinfo = new_stackinfo(128, 1024/sizeof(PERL_CONTEXT));
384	PL_curstackinfo->si_type = PERLSI_MAIN;	424	PL_curstackinfo->si_type = PERLSI_MAIN;
385	PL_curstack = PL_curstackinfo->si_stack;	425	PL_curstack = PL_curstackinfo->si_stack;
386	PL_mainstack = PL_curstack; /* remember in case we switch stacks */	426	PL_mainstack = PL_curstack; /* remember in case we switch stacks */
387		427
388	PL_stack_base = AvARRAY(PL_curstack);	428	PL_stack_base = AvARRAY(PL_curstack);
389	PL_stack_sp = PL_stack_base;	429	PL_stack_sp = PL_stack_base;
390	PL_stack_max = PL_stack_base + AvMAX(PL_curstack);	430	PL_stack_max = PL_stack_base + AvMAX(PL_curstack);
391		431
392	New(50,PL_tmps_stack,96,SV*);	432	New(50,PL_tmps_stack,128,SV*);
393	PL_tmps_floor = -1;	433	PL_tmps_floor = -1;
394	PL_tmps_ix = -1;	434	PL_tmps_ix = -1;
395	PL_tmps_max = 96;	435	PL_tmps_max = 128;
396		436
397	New(54,PL_markstack,16,I32);	437	New(54,PL_markstack,32,I32);
398	PL_markstack_ptr = PL_markstack;	438	PL_markstack_ptr = PL_markstack;
399	PL_markstack_max = PL_markstack + 16;	439	PL_markstack_max = PL_markstack + 32;
400		440
401	#ifdef SET_MARK_OFFSET	441	#ifdef SET_MARK_OFFSET
402	SET_MARK_OFFSET;	442	SET_MARK_OFFSET;
403	#endif	443	#endif
404		444
405	New(54,PL_scopestack,16,I32);	445	New(54,PL_scopestack,32,I32);
406	PL_scopestack_ix = 0;	446	PL_scopestack_ix = 0;
407	PL_scopestack_max = 16;	447	PL_scopestack_max = 32;
408		448
409	New(54,PL_savestack,96,ANY);	449	New(54,PL_savestack,64,ANY);
410	PL_savestack_ix = 0;	450	PL_savestack_ix = 0;
411	PL_savestack_max = 96;	451	PL_savestack_max = 64;
412		452
413	#if !PERL_VERSION_ATLEAST (5,9,0)	453	#if !PERL_VERSION_ATLEAST (5,9,0)
414	New(54,PL_retstack,8,OP*);	454	New(54,PL_retstack,16,OP*);
415	PL_retstack_ix = 0;	455	PL_retstack_ix = 0;
416	PL_retstack_max = 8;	456	PL_retstack_max = 16;
417	#endif	457	#endif
418	}	458	}
		459	#endif
419		460
420	/*	461	/*
421	* destroy the stacks, the callchain etc...	462	* destroy the stacks, the callchain etc...
422	*/	463	*/
423	static void	464	static void
424	coro_destroy_stacks ()	465	coro_destroy_stacks ()
425	{	466	{
426	if (!IN_DESTRUCT)	467	if (!IN_DESTRUCT)
427	{	468	{
428	/* is this ugly, I ask? */	469	/* restore all saved variables and stuff */
429	LEAVE_SCOPE (0);	470	LEAVE_SCOPE (0);
		471	assert (PL_tmps_floor == -1);
430		472
431	/* sure it is, but more important: is it correct?? :/ */	473	/* free all temporaries */
432	FREETMPS;	474	FREETMPS;
		475	assert (PL_tmps_ix == -1);
433		476
		477	/* unwind all extra stacks */
434	/POPSTACK_TO (PL_mainstack);//D//use/	478	POPSTACK_TO (PL_mainstack);
		479
		480	/* unwind main stack */
		481	dounwind (-1);
435	}	482	}
436		483
437	while (PL_curstackinfo->si_next)	484	while (PL_curstackinfo->si_next)
438	PL_curstackinfo = PL_curstackinfo->si_next;	485	PL_curstackinfo = PL_curstackinfo->si_next;
439		486
440	while (PL_curstackinfo)	487	while (PL_curstackinfo)
441	{	488	{
442	PERL_SI *p = PL_curstackinfo->si_prev;	489	PERL_SI *p = PL_curstackinfo->si_prev;
443		490
444	{ /D//remove/
445	dSP;
446	SWITCHSTACK (PL_curstack, PL_curstackinfo->si_stack);
447	PUTBACK; /* possibly superfluous */
448	}
449
450	if (!IN_DESTRUCT)	491	if (!IN_DESTRUCT)
451	{
452	dounwind (-1);/D//remove/
453	SvREFCNT_dec (PL_curstackinfo->si_stack);	492	SvREFCNT_dec (PL_curstackinfo->si_stack);
454	}
455		493
456	Safefree (PL_curstackinfo->si_cxstack);	494	Safefree (PL_curstackinfo->si_cxstack);
457	Safefree (PL_curstackinfo);	495	Safefree (PL_curstackinfo);
458	PL_curstackinfo = p;	496	PL_curstackinfo = p;
459	}	497	}
…		…
474	* emulate part of the perl startup here.	512	* emulate part of the perl startup here.
475	*/	513	*/
476		514
477	coro_init_stacks ();	515	coro_init_stacks ();
478		516
479	PL_curcop = 0;	517	PL_curcop = &PL_compiling;
480	PL_in_eval = 0;	518	PL_in_eval = EVAL_NULL;
481	PL_curpm = 0;	519	PL_curpm = 0;
		520	PL_localizing = 0;
		521	PL_dirty = 0;
		522	PL_restartop = 0;
482		523
483	{	524	{
484	dSP;	525	dSP;
485	LOGOP myop;	526	LOGOP myop;
486		527
487	/* I have no idea why this is needed, but it is */
488	PUSHMARK (SP);
489
490	SvREFCNT_dec (GvAV (PL_defgv));	528	SvREFCNT_dec (GvAV (PL_defgv));
491	GvAV (PL_defgv) = coro->args; coro->args = 0;	529	GvAV (PL_defgv) = coro->args; coro->args = 0;
492		530
493	Zero (&myop, 1, LOGOP);	531	Zero (&myop, 1, LOGOP);
494	myop.op_next = Nullop;	532	myop.op_next = Nullop;
495	myop.op_flags = OPf_WANT_VOID;	533	myop.op_flags = OPf_WANT_VOID;
496		534
497	PL_op = (OP *)&myop;
498
499	PUSHMARK (SP);	535	PUSHMARK (SP);
500	XPUSHs ((SV *)get_cv ("Coro::State::_coro_init", FALSE));	536	XPUSHs ((SV *)get_cv ("Coro::State::_coro_init", FALSE));
501	PUTBACK;	537	PUTBACK;
		538	PL_op = (OP *)&myop;
502	PL_op = PL_ppaddr[OP_ENTERSUB](aTHX);	539	PL_op = PL_ppaddr[OP_ENTERSUB](aTHX);
503	SPAGAIN;	540	SPAGAIN;
504
505	ENTER; /* necessary e.g. for dounwind */
506	}	541	}
		542
		543	ENTER; /* necessary e.g. for dounwind */
507	}	544	}
508		545
509	static void	546	static void
510	free_coro_mortal ()	547	free_coro_mortal ()
511	{	548	{
…		…
514	SvREFCNT_dec (coro_mortal);	551	SvREFCNT_dec (coro_mortal);
515	coro_mortal = 0;	552	coro_mortal = 0;
516	}	553	}
517	}	554	}
518		555
		556	/* inject a fake call to Coro::State::_cctx_init into the execution */
519	static void NOINLINE	557	static void NOINLINE
520	prepare_cctx (coro_cctx *cctx)	558	prepare_cctx (coro_cctx *cctx)
521	{	559	{
522	dSP;	560	dSP;
523	LOGOP myop;	561	LOGOP myop;
524		562
525	Zero (&myop, 1, LOGOP);	563	Zero (&myop, 1, LOGOP);
526	myop.op_next = PL_op;	564	myop.op_next = PL_op;
527	myop.op_flags = OPf_WANT_VOID;	565	myop.op_flags = OPf_WANT_VOID \| OPf_STACKED;
528
529	sv_setiv (get_sv ("Coro::State::_cctx", FALSE), PTR2IV (cctx));
530		566
531	PUSHMARK (SP);	567	PUSHMARK (SP);
		568	EXTEND (SP, 2);
		569	PUSHs (sv_2mortal (newSViv (PTR2IV (cctx))));
532	XPUSHs ((SV *)get_cv ("Coro::State::_cctx_init", FALSE));	570	PUSHs ((SV *)get_cv ("Coro::State::_cctx_init", FALSE));
533	PUTBACK;	571	PUTBACK;
		572	PL_op = (OP *)&myop;
534	PL_restartop = PL_ppaddr[OP_ENTERSUB](aTHX);	573	PL_op = PL_ppaddr[OP_ENTERSUB](aTHX);
535	SPAGAIN;	574	SPAGAIN;
536	}	575	}
537		576
538	static void	577	static void
539	coro_run (void *arg)	578	coro_run (void *arg)
540	{	579	{
541	/* coro_run is the alternative epilogue of transfer() */	580	/* coro_run is the alternative tail of transfer(), so unlock here. */
542	UNLOCK;	581	UNLOCK;
543		582
544	/*	583	/*
545	* this is a _very_ stripped down perl interpreter ;)	584	* this is a _very_ stripped down perl interpreter ;)
546	*/	585	*/
…		…
548		587
549	/* inject call to cctx_init */	588	/* inject call to cctx_init */
550	prepare_cctx ((coro_cctx *)arg);	589	prepare_cctx ((coro_cctx *)arg);
551		590
552	/* somebody will hit me for both perl_run and PL_restartop */	591	/* somebody will hit me for both perl_run and PL_restartop */
		592	PL_restartop = PL_op;
553	perl_run (PL_curinterp);	593	perl_run (PL_curinterp);
554		594
555	fputs ("FATAL: C coroutine fell over the edge of the world, aborting. Did you call exit in a coroutine?\n", stderr);	595	fputs ("FATAL: C coroutine fell over the edge of the world, aborting. Did you call exit in a coroutine?\n", stderr);
556	abort ();	596	abort ();
557	}	597	}
…		…
561	{	601	{
562	coro_cctx *cctx;	602	coro_cctx *cctx;
563		603
564	++cctx_count;	604	++cctx_count;
565		605
566	New (0, cctx, 1, coro_cctx);	606	Newz (0, cctx, 1, coro_cctx);
567		607
568	#if HAVE_MMAP	608	#if HAVE_MMAP
569		609
570	cctx->ssize = ((STACKSIZE * sizeof (long) + PAGESIZE - 1) / PAGESIZE + STACKGUARD) * PAGESIZE;	610	cctx->ssize = ((STACKSIZE * sizeof (long) + PAGESIZE - 1) / PAGESIZE + STACKGUARD) * PAGESIZE;
571	/* mmap suppsedly does allocate-on-write for us */	611	/* 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);	612	cctx->sptr = mmap (0, cctx->ssize, PROT_EXEC\|PROT_READ\|PROT_WRITE, MAP_PRIVATE\|MAP_ANONYMOUS, 0, 0);
573		613
574	if (cctx->sptr == (void *)-1)	614	if (cctx->sptr == (void *)-1)
575	{	615	{
576	perror ("FATAL: unable to mmap stack for coroutine");	616	perror ("FATAL: unable to mmap stack for coroutine");
…		…
605		645
606	return cctx;	646	return cctx;
607	}	647	}
608		648
609	static void	649	static void
610	cctx_free (coro_cctx *cctx)	650	cctx_destroy (coro_cctx *cctx)
611	{	651	{
612	if (!cctx)	652	if (!cctx)
613	return;	653	return;
614		654
615	--cctx_count;	655	--cctx_count;
…		…
632	{	672	{
633	coro_cctx *cctx;	673	coro_cctx *cctx;
634		674
635	if (cctx_first)	675	if (cctx_first)
636	{	676	{
637	--cctx_idle;
638	cctx = cctx_first;	677	cctx = cctx_first;
639	cctx_first = cctx->next;	678	cctx_first = cctx->next;
		679	--cctx_idle;
640	}	680	}
641	else	681	else
642	{	682	{
643	cctx = cctx_new ();	683	cctx = cctx_new ();
644	PL_op = PL_op->op_next;	684	PL_op = PL_op->op_next;
…		…
648	}	688	}
649		689
650	static void	690	static void
651	cctx_put (coro_cctx *cctx)	691	cctx_put (coro_cctx *cctx)
652	{	692	{
		693	/* free another cctx if overlimit */
		694	if (cctx_idle >= MAX_IDLE_CCTX)
		695	{
		696	coro_cctx *first = cctx_first;
		697	cctx_first = first->next;
		698	--cctx_idle;
		699
		700	assert (!first->inuse);
		701	cctx_destroy (first);
		702	}
		703
653	++cctx_idle;	704	++cctx_idle;
654	cctx->next = cctx_first;	705	cctx->next = cctx_first;
655	cctx_first = cctx;	706	cctx_first = cctx;
656	}	707	}
657		708
658	/* never call directly, always through the coro_state_transfer global variable */	709	/* never call directly, always through the coro_state_transfer global variable */
659	static void NOINLINE	710	static void NOINLINE
660	transfer (struct coro prev, struct coro next, int flags)	711	transfer (struct coro prev, struct coro next)
661	{	712	{
662	dSTACKLEVEL;	713	dSTACKLEVEL;
663		714
664	/* sometimes transfer is only called to set idle_sp */	715	/* sometimes transfer is only called to set idle_sp */
665	if (flags == TRANSFER_SET_STACKLEVEL)	716	if (!next)
		717	{
666	((coro_cctx *)prev)->idle_sp = STACKLEVEL;	718	((coro_cctx *)prev)->idle_sp = STACKLEVEL;
		719	assert (((coro_cctx )prev)->idle_te = PL_top_env); / just for the side-effect when asserts are enabled */
		720	}
667	else if (prev != next)	721	else if (prev != next)
668	{	722	{
669	coro_cctx *prev__cctx;	723	coro_cctx *prev__cctx;
670		724
		725	if (prev->flags & CF_NEW)
		726	{
		727	/* create a new empty context */
		728	Newz (0, prev->cctx, 1, coro_cctx);
		729	prev->cctx->inuse = 1;
		730	prev->flags &= ~CF_NEW;
		731	prev->flags \|= CF_RUNNING;
		732	}
		733
		734	/TODO: must not croak here /
		735	if (!prev->flags & CF_RUNNING)
		736	croak ("Coro::State::transfer called with non-running prev Coro::State, but can only transfer from running states");
		737
		738	if (next->flags & CF_RUNNING)
		739	croak ("Coro::State::transfer called with running next Coro::State, but can only transfer to inactive states");
		740
		741	if (next->flags & CF_DESTROYED)
		742	croak ("Coro::State::transfer called with destroyed next Coro::State, but can only transfer to inactive states");
		743
		744	prev->flags &= ~CF_RUNNING;
		745	next->flags \|= CF_RUNNING;
		746
671	LOCK;	747	LOCK;
672		748
673	if (next->mainstack)	749	if (next->flags & CF_NEW)
674	{	750	{
675	/* coroutine already started */	751	/* need to start coroutine */
676	SAVE (prev, flags);	752	next->flags &= ~CF_NEW;
677	LOAD (next);	753	/* first get rid of the old state */
		754	save_perl (prev);
		755	/* setup coroutine call */
		756	setup_coro (next);
		757	/* need a new stack */
		758	assert (!next->cctx);
678	}	759	}
679	else	760	else
680	{	761	{
681	/* need to start coroutine */	762	/* coroutine already started */
682	/* first get rid of the old state */	763	save_perl (prev);
683	SAVE (prev, -1);	764	load_perl (next);
684	/* setup coroutine call */
685	setup_coro (next);
686	/* need a stack */
687	next->cctx = 0;
688	}	765	}
689
690	if (!prev->cctx)
691	/* create a new empty context */
692	Newz (0, prev->cctx, 1, coro_cctx);
693		766
694	prev__cctx = prev->cctx;	767	prev__cctx = prev->cctx;
695		768
696	/* possibly "free" the cctx */	769	/* possibly "free" the cctx */
697	if (prev__cctx->idle_sp == STACKLEVEL)	770	if (prev__cctx->idle_sp == STACKLEVEL)
698	{	771	{
		772	/* I assume that STACKLEVEL is a stronger indicator than PL_top_env changes */
		773	assert (("ERROR: current top_env must equal previous top_env", PL_top_env == prev__cctx->idle_te));
		774
		775	prev->cctx = 0;
		776
699	cctx_put (prev__cctx);	777	cctx_put (prev__cctx);
700	prev->cctx = 0;	778	prev__cctx->inuse = 0;
701	}	779	}
702		780
703	if (!next->cctx)	781	if (!next->cctx)
		782	{
704	next->cctx = cctx_get ();	783	next->cctx = cctx_get ();
		784	assert (!next->cctx->inuse);
		785	next->cctx->inuse = 1;
		786	}
705		787
706	if (prev__cctx != next->cctx)	788	if (prev__cctx != next->cctx)
707	{	789	{
708	prev__cctx->top_env = PL_top_env;	790	prev__cctx->top_env = PL_top_env;
709	PL_top_env = next->cctx->top_env;	791	PL_top_env = next->cctx->top_env;
710	coro_transfer (&prev__cctx->cctx, &next->cctx->cctx);	792	coro_transfer (&prev__cctx->cctx, &next->cctx->cctx);
711	}	793	}
712		794
713	free_coro_mortal ();	795	free_coro_mortal ();
714
715	UNLOCK;	796	UNLOCK;
716	}	797	}
717	}	798	}
718		799
719	struct transfer_args	800	struct transfer_args
720	{	801	{
721	struct coro prev, next;	802	struct coro prev, next;
722	int flags;
723	};	803	};
724		804
725	#define TRANSFER(ta) transfer ((ta).prev, (ta).next, (ta).flags)	805	#define TRANSFER(ta) transfer ((ta).prev, (ta).next)
726		806
727	static void	807	static int
728	coro_state_destroy (struct coro *coro)	808	coro_state_destroy (struct coro *coro)
729	{	809	{
730	if (coro->refcnt--)	810	if (coro->flags & CF_DESTROYED)
731	return;	811	return 0;
		812
		813	coro->flags \|= CF_DESTROYED;
732		814
733	if (coro->mainstack && coro->mainstack != main_mainstack)	815	if (coro->mainstack && coro->mainstack != main_mainstack)
734	{	816	{
		817	assert (!(coro->flags & CF_RUNNING));
		818
735	struct coro temp;	819	struct coro temp;
		820	Zero (&temp, 1, struct coro);
		821	temp.save = CORO_SAVE_ALL;
736		822
737	SAVE ((&temp), TRANSFER_SAVE_ALL);	823	if (coro->flags & CF_RUNNING)
738	LOAD (coro);	824	croak ("FATAL: tried to destroy currently running coroutine");
		825
		826	save_perl (&temp);
		827	load_perl (coro);
739		828
740	coro_destroy_stacks ();	829	coro_destroy_stacks ();
741		830
742	LOAD ((&temp)); /* this will get rid of defsv etc.. */	831	load_perl (&temp); /* this will get rid of defsv etc.. */
743		832
744	coro->mainstack = 0;	833	coro->mainstack = 0;
745	}	834	}
746		835
747	cctx_free (coro->cctx);	836	cctx_destroy (coro->cctx);
748	SvREFCNT_dec (coro->args);	837	SvREFCNT_dec (coro->args);
749	Safefree (coro);	838
		839	return 1;
750	}	840	}
751		841
752	static int	842	static int
753	coro_state_clear (pTHX_ SV sv, MAGIC mg)	843	coro_state_free (pTHX_ SV sv, MAGIC mg)
754	{	844	{
755	struct coro coro = (struct coro )mg->mg_ptr;	845	struct coro coro = (struct coro )mg->mg_ptr;
756	mg->mg_ptr = 0;	846	mg->mg_ptr = 0;
757		847
		848	if (--coro->refcnt < 0)
		849	{
758	coro_state_destroy (coro);	850	coro_state_destroy (coro);
		851	Safefree (coro);
		852	}
759		853
760	return 0;	854	return 0;
761	}	855	}
762		856
763	static int	857	static int
…		…
770	return 0;	864	return 0;
771	}	865	}
772		866
773	static MGVTBL coro_state_vtbl = {	867	static MGVTBL coro_state_vtbl = {
774	0, 0, 0, 0,	868	0, 0, 0, 0,
775	coro_state_clear,	869	coro_state_free,
776	0,	870	0,
777	#ifdef MGf_DUP	871	#ifdef MGf_DUP
778	coro_state_dup,	872	coro_state_dup,
779	#else	873	#else
780	# define MGf_DUP 0	874	# define MGf_DUP 0
…		…
802	assert (mg->mg_type == PERL_MAGIC_ext);	896	assert (mg->mg_type == PERL_MAGIC_ext);
803	return (struct coro *)mg->mg_ptr;	897	return (struct coro *)mg->mg_ptr;
804	}	898	}
805		899
806	static void	900	static void
807	prepare_transfer (struct transfer_args ta, SV prev, SV *next, int flags)	901	prepare_transfer (struct transfer_args ta, SV prev_sv, SV *next_sv)
808	{	902	{
809	ta->prev = SvSTATE (prev);	903	ta->prev = SvSTATE (prev_sv);
810	ta->next = SvSTATE (next);	904	ta->next = SvSTATE (next_sv);
811	ta->flags = flags;
812	}	905	}
813		906
814	static void	907	static void
815	api_transfer (SV prev, SV next, int flags)	908	api_transfer (SV prev_sv, SV next_sv)
816	{	909	{
817	dTHX;
818	struct transfer_args ta;	910	struct transfer_args ta;
819		911
820	prepare_transfer (&ta, prev, next, flags);	912	prepare_transfer (&ta, prev_sv, next_sv);
821	TRANSFER (ta);	913	TRANSFER (ta);
		914	}
		915
		916	static int
		917	api_save (SV *coro_sv, int new_save)
		918	{
		919	struct coro *coro = SvSTATE (coro_sv);
		920	int old_save = coro->save;
		921
		922	if (new_save >= 0)
		923	coro->save = new_save;
		924
		925	return old_save;
822	}	926	}
823		927
824	/ Coro ******************************************************************/	928	/ Coro ******************************************************************/
825		929
826	#define PRIO_MAX 3	930	#define PRIO_MAX 3
…		…
829	#define PRIO_LOW -1	933	#define PRIO_LOW -1
830	#define PRIO_IDLE -3	934	#define PRIO_IDLE -3
831	#define PRIO_MIN -4	935	#define PRIO_MIN -4
832		936
833	/* for Coro.pm */	937	/* for Coro.pm */
834	static GV coro_current, coro_idle;	938	static SV *coro_current;
835	static AV *coro_ready [PRIO_MAX-PRIO_MIN+1];	939	static AV *coro_ready [PRIO_MAX-PRIO_MIN+1];
836	static int coro_nready;	940	static int coro_nready;
837		941
838	static void	942	static void
839	coro_enq (SV *sv)	943	coro_enq (SV *coro_sv)
840	{	944	{
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);	945	av_push (coro_ready [SvSTATE (coro_sv)->prio - PRIO_MIN], coro_sv);
849	coro_nready++;	946	coro_nready++;
850	}	947	}
851		948
852	static SV *	949	static SV *
853	coro_deq (int min_prio)	950	coro_deq (int min_prio)
…		…
866	}	963	}
867		964
868	return 0;	965	return 0;
869	}	966	}
870		967
871	static void	968	static int
872	api_ready (SV *coro)	969	api_ready (SV *coro_sv)
873	{	970	{
874	dTHX;	971	struct coro *coro;
875		972
876	if (SvROK (coro))	973	if (SvROK (coro_sv))
877	coro = SvRV (coro);	974	coro_sv = SvRV (coro_sv);
		975
		976	coro = SvSTATE (coro_sv);
		977
		978	if (coro->flags & CF_READY)
		979	return 0;
		980
		981	coro->flags \|= CF_READY;
878		982
879	LOCK;	983	LOCK;
880	coro_enq (SvREFCNT_inc (coro));	984	coro_enq (SvREFCNT_inc (coro_sv));
881	UNLOCK;	985	UNLOCK;
		986
		987	return 1;
		988	}
		989
		990	static int
		991	api_is_ready (SV *coro_sv)
		992	{
		993	return !!(SvSTATE (coro_sv)->flags & CF_READY);
882	}	994	}
883		995
884	static void	996	static void
885	prepare_schedule (struct transfer_args *ta)	997	prepare_schedule (struct transfer_args *ta)
886	{	998	{
887	SV current, prev, *next;	999	SV prev_sv, next_sv;
888
889	current = GvSV (coro_current);
890		1000
891	for (;;)	1001	for (;;)
892	{	1002	{
893	LOCK;	1003	LOCK;
894	next = coro_deq (PRIO_MIN);	1004	next_sv = coro_deq (PRIO_MIN);
895	UNLOCK;	1005	UNLOCK;
896		1006
		1007	/* nothing to schedule: call the idle handler */
897	if (next)	1008	if (!next_sv)
898	break;
899
900	{	1009	{
901	dSP;	1010	dSP;
902		1011
903	ENTER;	1012	ENTER;
904	SAVETMPS;	1013	SAVETMPS;
905		1014
906	PUSHMARK (SP);	1015	PUSHMARK (SP);
907	PUTBACK;	1016	PUTBACK;
908	call_sv (GvSV (coro_idle), G_DISCARD);	1017	call_sv (get_sv ("Coro::idle", FALSE), G_DISCARD);
909		1018
910	FREETMPS;	1019	FREETMPS;
911	LEAVE;	1020	LEAVE;
		1021	continue;
912	}	1022	}
913	}
914		1023
915	prev = SvRV (current);	1024	ta->next = SvSTATE (next_sv);
916	SvRV (current) = next;	1025
		1026	/* cannot transfer to destroyed coros, skip and look for next */
		1027	if (ta->next->flags & CF_DESTROYED)
		1028	{
		1029	SvREFCNT_dec (next_sv);
		1030	continue;
		1031	}
		1032
		1033	break;
		1034	}
917		1035
918	/* free this only after the transfer */	1036	/* free this only after the transfer */
		1037	prev_sv = SvRV (coro_current);
		1038	SvRV_set (coro_current, next_sv);
		1039	ta->prev = SvSTATE (prev_sv);
		1040
		1041	assert (ta->next->flags & CF_READY);
		1042	ta->next->flags &= ~CF_READY;
		1043
919	LOCK;	1044	LOCK;
920	free_coro_mortal ();	1045	free_coro_mortal ();
		1046	coro_mortal = prev_sv;
921	UNLOCK;	1047	UNLOCK;
922	coro_mortal = prev;
923
924	ta->prev = SvSTATE (prev);
925	ta->next = SvSTATE (next);
926	ta->flags = TRANSFER_SAVE_ALL;
927	}	1048	}
928		1049
929	static void	1050	static void
930	prepare_cede (struct transfer_args *ta)	1051	prepare_cede (struct transfer_args *ta)
931	{	1052	{
932	LOCK;	1053	api_ready (coro_current);
933	coro_enq (SvREFCNT_inc (SvRV (GvSV (coro_current))));
934	UNLOCK;
935
936	prepare_schedule (ta);	1054	prepare_schedule (ta);
937	}	1055	}
938		1056
		1057	static int
		1058	prepare_cede_notself (struct transfer_args *ta)
		1059	{
		1060	if (coro_nready)
		1061	{
		1062	SV *prev = SvRV (coro_current);
		1063	prepare_schedule (ta);
		1064	api_ready (prev);
		1065	return 1;
		1066	}
		1067	else
		1068	return 0;
		1069	}
		1070
939	static void	1071	static void
940	api_schedule (void)	1072	api_schedule (void)
941	{	1073	{
942	dTHX;
943	struct transfer_args ta;	1074	struct transfer_args ta;
944		1075
945	prepare_schedule (&ta);	1076	prepare_schedule (&ta);
946	TRANSFER (ta);	1077	TRANSFER (ta);
947	}	1078	}
948		1079
949	static void	1080	static int
950	api_cede (void)	1081	api_cede (void)
951	{	1082	{
952	dTHX;
953	struct transfer_args ta;	1083	struct transfer_args ta;
954		1084
955	prepare_cede (&ta);	1085	prepare_cede (&ta);
		1086
		1087	if (ta.prev != ta.next)
		1088	{
956	TRANSFER (ta);	1089	TRANSFER (ta);
		1090	return 1;
		1091	}
		1092	else
		1093	return 0;
		1094	}
		1095
		1096	static int
		1097	api_cede_notself (void)
		1098	{
		1099	struct transfer_args ta;
		1100
		1101	if (prepare_cede_notself (&ta))
		1102	{
		1103	TRANSFER (ta);
		1104	return 1;
		1105	}
		1106	else
		1107	return 0;
957	}	1108	}
958		1109
959	MODULE = Coro::State PACKAGE = Coro::State	1110	MODULE = Coro::State PACKAGE = Coro::State
960		1111
961	PROTOTYPES: DISABLE	1112	PROTOTYPES: DISABLE
…		…
967	#endif	1118	#endif
968	BOOT_PAGESIZE;	1119	BOOT_PAGESIZE;
969		1120
970	coro_state_stash = gv_stashpv ("Coro::State", TRUE);	1121	coro_state_stash = gv_stashpv ("Coro::State", TRUE);
971		1122
972	newCONSTSUB (coro_state_stash, "SAVE_DEFAV", newSViv (TRANSFER_SAVE_DEFAV));	1123	newCONSTSUB (coro_state_stash, "SAVE_DEFAV", newSViv (CORO_SAVE_DEFAV));
973	newCONSTSUB (coro_state_stash, "SAVE_DEFSV", newSViv (TRANSFER_SAVE_DEFSV));	1124	newCONSTSUB (coro_state_stash, "SAVE_DEFSV", newSViv (CORO_SAVE_DEFSV));
974	newCONSTSUB (coro_state_stash, "SAVE_ERRSV", newSViv (TRANSFER_SAVE_ERRSV));	1125	newCONSTSUB (coro_state_stash, "SAVE_ERRSV", newSViv (CORO_SAVE_ERRSV));
		1126	newCONSTSUB (coro_state_stash, "SAVE_IRSSV", newSViv (CORO_SAVE_IRSSV));
		1127	newCONSTSUB (coro_state_stash, "SAVE_ALL", newSViv (CORO_SAVE_ALL));
975		1128
976	main_mainstack = PL_mainstack;	1129	main_mainstack = PL_mainstack;
977		1130
978	coroapi.ver = CORO_API_VERSION;	1131	coroapi.ver = CORO_API_VERSION;
979	coroapi.transfer = api_transfer;	1132	coroapi.transfer = api_transfer;
…		…
989	HV *hv;	1142	HV *hv;
990	int i;	1143	int i;
991		1144
992	Newz (0, coro, 1, struct coro);	1145	Newz (0, coro, 1, struct coro);
993	coro->args = newAV ();	1146	coro->args = newAV ();
		1147	coro->save = CORO_SAVE_ALL;
		1148	coro->flags = CF_NEW;
994		1149
995	hv = newHV ();	1150	hv = newHV ();
996	sv_magicext ((SV )hv, 0, PERL_MAGIC_ext, &coro_state_vtbl, (char )coro, 0)->mg_flags \|= MGf_DUP;	1151	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));	1152	RETVAL = sv_bless (newRV_noinc ((SV *)hv), gv_stashpv (klass, 1));
998		1153
999	for (i = 1; i < items; i++)	1154	for (i = 1; i < items; i++)
1000	av_push (coro->args, newSVsv (ST (i)));	1155	av_push (coro->args, newSVsv (ST (i)));
1001	}	1156	}
1002	OUTPUT:	1157	OUTPUT:
		1158	RETVAL
		1159
		1160	int
		1161	save (SV *coro, int new_save = -1)
		1162	CODE:
		1163	RETVAL = api_save (coro, new_save);
		1164	OUTPUT:
1003	RETVAL	1165	RETVAL
1004		1166
1005	void	1167	void
1006	_set_stacklevel (...)	1168	_set_stacklevel (...)
1007	ALIAS:	1169	ALIAS:
1008	Coro::State::transfer = 1	1170	Coro::State::transfer = 1
1009	Coro::schedule = 2	1171	Coro::schedule = 2
1010	Coro::cede = 3	1172	Coro::cede = 3
1011	Coro::Cont::yield = 4	1173	Coro::cede_notself = 4
1012	CODE:	1174	CODE:
1013	{	1175	{
1014	struct transfer_args ta;	1176	struct transfer_args ta;
1015		1177
1016	switch (ix)	1178	switch (ix)
1017	{	1179	{
1018	case 0:	1180	case 0:
1019	ta.prev = (struct coro )INT2PTR (coro_cctx , SvIV (ST (0)));	1181	ta.prev = (struct coro )INT2PTR (coro_cctx , SvIV (ST (0)));
1020	ta.next = 0;	1182	ta.next = 0;
1021	ta.flags = TRANSFER_SET_STACKLEVEL;
1022	break;	1183	break;
1023		1184
1024	case 1:	1185	case 1:
1025	if (items != 3)	1186	if (items != 2)
1026	croak ("Coro::State::transfer(prev,next,flags) expects three arguments, not %d", items);	1187	croak ("Coro::State::transfer (prev,next) expects two arguments, not %d", items);
1027		1188
1028	prepare_transfer (&ta, ST (0), ST (1), SvIV (ST (2)));	1189	prepare_transfer (&ta, ST (0), ST (1));
1029	break;	1190	break;
1030		1191
1031	case 2:	1192	case 2:
1032	prepare_schedule (&ta);	1193	prepare_schedule (&ta);
1033	break;	1194	break;
…		…
1035	case 3:	1196	case 3:
1036	prepare_cede (&ta);	1197	prepare_cede (&ta);
1037	break;	1198	break;
1038		1199
1039	case 4:	1200	case 4:
1040	{	1201	if (!prepare_cede_notself (&ta))
1041	SV *yieldstack;	1202	XSRETURN_EMPTY;
1042	SV *sv;
1043	AV *defav = GvAV (PL_defgv);
1044		1203
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;	1204	break;
1064
1065	}	1205	}
1066		1206
		1207	BARRIER;
1067	TRANSFER (ta);	1208	TRANSFER (ta);
1068	}
1069		1209
1070	void	1210	if (GIMME_V != G_VOID && ta.next != ta.prev)
1071	_clone_state_from (SV dst, SV src)	1211	XSRETURN_YES;
		1212	}
		1213
		1214	bool
		1215	_destroy (SV *coro_sv)
1072	CODE:	1216	CODE:
1073	{	1217	RETVAL = coro_state_destroy (SvSTATE (coro_sv));
1074	struct coro *coro_src = SvSTATE (src);	1218	OUTPUT:
1075		1219	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		1220
1082	void	1221	void
1083	_exit (code)	1222	_exit (code)
1084	int code	1223	int code
1085	PROTOTYPE: $	1224	PROTOTYPE: $
…		…
1113	newCONSTSUB (coro_stash, "PRIO_NORMAL", newSViv (PRIO_NORMAL));	1252	newCONSTSUB (coro_stash, "PRIO_NORMAL", newSViv (PRIO_NORMAL));
1114	newCONSTSUB (coro_stash, "PRIO_LOW", newSViv (PRIO_LOW));	1253	newCONSTSUB (coro_stash, "PRIO_LOW", newSViv (PRIO_LOW));
1115	newCONSTSUB (coro_stash, "PRIO_IDLE", newSViv (PRIO_IDLE));	1254	newCONSTSUB (coro_stash, "PRIO_IDLE", newSViv (PRIO_IDLE));
1116	newCONSTSUB (coro_stash, "PRIO_MIN", newSViv (PRIO_MIN));	1255	newCONSTSUB (coro_stash, "PRIO_MIN", newSViv (PRIO_MIN));
1117		1256
1118	coro_current = gv_fetchpv ("Coro::current", TRUE, SVt_PV);	1257	coro_current = get_sv ("Coro::current", FALSE);
1119	coro_idle = gv_fetchpv ("Coro::idle" , TRUE, SVt_PV);	1258	SvREADONLY_on (coro_current);
1120		1259
1121	for (i = PRIO_MAX - PRIO_MIN + 1; i--; )	1260	for (i = PRIO_MAX - PRIO_MIN + 1; i--; )
1122	coro_ready[i] = newAV ();	1261	coro_ready[i] = newAV ();
1123		1262
1124	{	1263	{
1125	SV *sv = perl_get_sv("Coro::API", 1);	1264	SV *sv = perl_get_sv("Coro::API", 1);
1126		1265
1127	coroapi.schedule = api_schedule;	1266	coroapi.schedule = api_schedule;
		1267	coroapi.save = api_save;
1128	coroapi.cede = api_cede;	1268	coroapi.cede = api_cede;
		1269	coroapi.cede_notself = api_cede_notself;
1129	coroapi.ready = api_ready;	1270	coroapi.ready = api_ready;
		1271	coroapi.is_ready = api_is_ready;
1130	coroapi.nready = &coro_nready;	1272	coroapi.nready = &coro_nready;
1131	coroapi.current = coro_current;	1273	coroapi.current = coro_current;
1132		1274
1133	GCoroAPI = &coroapi;	1275	GCoroAPI = &coroapi;
1134	sv_setiv (sv, (IV)&coroapi);	1276	sv_setiv (sv, (IV)&coroapi);
1135	SvREADONLY_on (sv);	1277	SvREADONLY_on (sv);
1136	}	1278	}
1137	}	1279	}
		1280
		1281	void
		1282	_set_current (SV *current)
		1283	PROTOTYPE: $
		1284	CODE:
		1285	SvREFCNT_dec (SvRV (coro_current));
		1286	SvRV_set (coro_current, SvREFCNT_inc (SvRV (current)));
1138		1287
1139	int	1288	int
1140	prio (Coro::State coro, int newprio = 0)	1289	prio (Coro::State coro, int newprio = 0)
1141	ALIAS:	1290	ALIAS:
1142	nice = 1	1291	nice = 1
…		…
1145	RETVAL = coro->prio;	1294	RETVAL = coro->prio;
1146		1295
1147	if (items > 1)	1296	if (items > 1)
1148	{	1297	{
1149	if (ix)	1298	if (ix)
1150	newprio += coro->prio;	1299	newprio = coro->prio - newprio;
1151		1300
1152	if (newprio < PRIO_MIN) newprio = PRIO_MIN;	1301	if (newprio < PRIO_MIN) newprio = PRIO_MIN;
1153	if (newprio > PRIO_MAX) newprio = PRIO_MAX;	1302	if (newprio > PRIO_MAX) newprio = PRIO_MAX;
1154		1303
1155	coro->prio = newprio;	1304	coro->prio = newprio;
1156	}	1305	}
1157	}	1306	}
		1307	OUTPUT:
		1308	RETVAL
1158		1309
1159	void	1310	SV *
1160	ready (SV *self)	1311	ready (SV *self)
1161	PROTOTYPE: $	1312	PROTOTYPE: $
1162	CODE:	1313	CODE:
1163	api_ready (self);	1314	RETVAL = boolSV (api_ready (self));
		1315	OUTPUT:
		1316	RETVAL
		1317
		1318	SV *
		1319	is_ready (SV *self)
		1320	PROTOTYPE: $
		1321	CODE:
		1322	RETVAL = boolSV (api_is_ready (self));
		1323	OUTPUT:
		1324	RETVAL
1164		1325
1165	int	1326	int
1166	nready (...)	1327	nready (...)
1167	PROTOTYPE:	1328	PROTOTYPE:
1168	CODE:	1329	CODE:
…		…
1174		1335
1175	SV *	1336	SV *
1176	_get_state ()	1337	_get_state ()
1177	CODE:	1338	CODE:
1178	{	1339	{
1179	struct {	1340	struct io_state *data;
1180	int errorno;
1181	int laststype;
1182	int laststatval;
1183	Stat_t statcache;
1184	} data;
1185		1341
		1342	RETVAL = newSV (sizeof (struct io_state));
		1343	data = (struct io_state *)SvPVX (RETVAL);
		1344	SvCUR_set (RETVAL, sizeof (struct io_state));
		1345	SvPOK_only (RETVAL);
		1346
1186	data.errorno = errno;	1347	data->errorno = errno;
1187	data.laststype = PL_laststype;	1348	data->laststype = PL_laststype;
1188	data.laststatval = PL_laststatval;	1349	data->laststatval = PL_laststatval;
1189	data.statcache = PL_statcache;	1350	data->statcache = PL_statcache;
1190
1191	RETVAL = newSVpvn ((char *)&data, sizeof data);
1192	}	1351	}
1193	OUTPUT:	1352	OUTPUT:
1194	RETVAL	1353	RETVAL
1195		1354
1196	void	1355	void
1197	_set_state (char *data_)	1356	_set_state (char *data_)
1198	PROTOTYPE: $	1357	PROTOTYPE: $
1199	CODE:	1358	CODE:
1200	{	1359	{
1201	struct {	1360	struct io_state data = (void )data_;
1202	int errorno;
1203	int laststype;
1204	int laststatval;
1205	Stat_t statcache;
1206	} data = (void )data_;
1207		1361
1208	errno = data->errorno;	1362	errno = data->errorno;
1209	PL_laststype = data->laststype;	1363	PL_laststype = data->laststype;
1210	PL_laststatval = data->laststatval;	1364	PL_laststatval = data->laststatval;
1211	PL_statcache = data->statcache;	1365	PL_statcache = data->statcache;
1212	}	1366	}
		1367

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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 1.135 by root, Fri Jan 5 18:25:51 2007 UTC

Diff Legend

Comparing Coro/Coro/State.xs (file contents):
Revision 1.109 by root, Mon Nov 27 18:45:29 2006 UTC vs.
Revision 1.135 by root, Fri Jan 5 18:25:51 2007 UTC