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

Comparing Coro/Coro/State.xs (file contents):
Revision 1.101 by root, Mon Nov 27 00:08:18 2006 UTC vs.
Revision 1.122 by root, Mon Dec 4 13:47:56 2006 UTC

…		…
3	#include "EXTERN.h"	3	#include "EXTERN.h"
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
		9	#if USE_VALGRIND
		10	# include <valgrind/valgrind.h>
		11	#endif
		12
		13	/* the maximum number of idle cctx that will be pooled */
		14	#define MAX_IDLE_CCTX 8
8		15
9	#define PERL_VERSION_ATLEAST(a,b,c) \	16	#define PERL_VERSION_ATLEAST(a,b,c) \
10	(PERL_REVISION > (a) \	17	(PERL_REVISION > (a) \
11	\|\| (PERL_REVISION == (a) \	18	\|\| (PERL_REVISION == (a) \
12	&& (PERL_VERSION > (b) \	19	&& (PERL_VERSION > (b) \
13	\|\| (PERL_VERSION == (b) && PERLSUBVERSION >= (c)))))	20	\|\| (PERL_VERSION == (b) && PERLSUBVERSION >= (c)))))
14		21
15	#if !PERL_VERSION_ATLEAST (5,8,0)	22	#if !PERL_VERSION_ATLEAST (5,6,0)
16	# ifndef PL_ppaddr	23	# ifndef PL_ppaddr
17	# define PL_ppaddr ppaddr	24	# define PL_ppaddr ppaddr
18	# endif	25	# endif
19	# ifndef call_sv	26	# ifndef call_sv
20	# define call_sv perl_call_sv	27	# define call_sv perl_call_sv
…		…
58	# ifndef PAGESIZE	65	# ifndef PAGESIZE
59	# define PAGESIZE pagesize	66	# define PAGESIZE pagesize
60	# define BOOT_PAGESIZE pagesize = sysconf (_SC_PAGESIZE)	67	# define BOOT_PAGESIZE pagesize = sysconf (_SC_PAGESIZE)
61	static long pagesize;	68	static long pagesize;
62	# else	69	# else
63	# define BOOT_PAGESIZE	70	# define BOOT_PAGESIZE (void)0
64	# endif	71	# endif
		72	#else
		73	# define PAGESIZE 0
		74	# define BOOT_PAGESIZE (void)0
65	#endif	75	#endif
66		76
67	/* The next macro should declare a variable stacklevel that contains and approximation	77	/* The next macro should declare a variable stacklevel that contains and approximation
68	* to the current C stack pointer. Its property is that it changes with each call	78	* to the current C stack pointer. Its property is that it changes with each call
69	* and should be unique. */	79	* and should be unique. */
…		…
79	#endif	89	#endif
80		90
81	#define NOINLINE attribute ((noinline))	91	#define NOINLINE attribute ((noinline))
82		92
83	#include "CoroAPI.h"	93	#include "CoroAPI.h"
84
85	#define TRANSFER_SET_STACKLEVEL 0x8bfbfbfb /* magic cookie */
86		94
87	#ifdef USE_ITHREADS	95	#ifdef USE_ITHREADS
88	static perl_mutex coro_mutex;	96	static perl_mutex coro_mutex;
89	# define LOCK do { MUTEX_LOCK (&coro_mutex); } while (0)	97	# define LOCK do { MUTEX_LOCK (&coro_mutex); } while (0)
90	# define UNLOCK do { MUTEX_UNLOCK (&coro_mutex); } while (0)	98	# define UNLOCK do { MUTEX_UNLOCK (&coro_mutex); } while (0)
91	#else	99	#else
92	# define LOCK (void)0	100	# define LOCK (void)0
93	# define UNLOCK (void)0	101	# define UNLOCK (void)0
94	#endif	102	#endif
95		103
		104	struct io_state
		105	{
		106	int errorno;
		107	I32 laststype;
		108	int laststatval;
		109	Stat_t statcache;
		110	};
		111
96	static struct CoroAPI coroapi;	112	static struct CoroAPI coroapi;
97	static AV main_mainstack; / used to differentiate between $main and others */	113	static AV main_mainstack; / used to differentiate between $main and others */
98	static HV coro_state_stash, coro_stash;	114	static HV coro_state_stash, coro_stash;
99	static SV coro_mortal; / will be freed after next transfer */	115	static SV coro_mortal; / will be freed after next transfer */
100		116
		117	static struct coro_cctx *cctx_first;
		118	static int cctx_count, cctx_idle;
		119
101	/* this is a structure representing a c-level coroutine */	120	/* this is a structure representing a c-level coroutine */
102	typedef struct coro_stack {	121	typedef struct coro_cctx {
103	struct coro_stack *next;	122	struct coro_cctx *next;
104		123
105	/* the stack */	124	/* the stack */
106	void *sptr;	125	void *sptr;
107	long ssize; /* positive == mmap, otherwise malloc */	126	long ssize; /* positive == mmap, otherwise malloc */
108		127
109	/* cpu state */	128	/* cpu state */
110	void idle_sp; / sp of top-level transfer/schedule/cede call */	129	void idle_sp; / sp of top-level transfer/schedule/cede call */
111	JMPENV *top_env;	130	JMPENV *top_env;
112	coro_context cctx;	131	coro_context cctx;
113	} coro_stack;	132
		133	int inuse;
		134
		135	#if USE_VALGRIND
		136	int valgrind_id;
		137	#endif
		138	} coro_cctx;
		139
		140	enum {
		141	CF_RUNNING = 0x0001, /* coroutine is running */
		142	CF_READY = 0x0002, /* coroutine is ready */
		143	CF_NEW = 0x0004, /* ahs never been switched to */
		144	};
114		145
115	/* this is a structure representing a perl-level coroutine */	146	/* this is a structure representing a perl-level coroutine */
116	struct coro {	147	struct coro {
117	/* the c coroutine allocated to this perl coroutine, if any */	148	/* the c coroutine allocated to this perl coroutine, if any */
118	coro_stack *stack;	149	coro_cctx *cctx;
119		150
120	/* data associated with this coroutine (initial args) */	151	/* data associated with this coroutine (initial args) */
121	AV *args;	152	AV *args;
122	int refcnt;	153	int refcnt;
		154	int save; /* CORO_SAVE flags */
		155	int flags; /* CF_ flags */
123		156
124	/* optionally saved, might be zero */	157	/* optionally saved, might be zero */
125	AV *defav;	158	AV defav; / @_ */
126	SV *defsv;	159	SV defsv; / $_ */
127	SV *errsv;	160	SV errsv; / $@ */
		161	SV irssv; / $/ */
128		162
129	/* saved global state not related to stacks */	163	#define VAR(name,type) type name;
130	U8 dowarn;	164	# include "state.h"
131	I32 in_eval;	165	#undef VAR
132
133	/* the stacks and related info (callchain etc..) */
134	PERL_SI *curstackinfo;
135	AV *curstack;
136	AV *mainstack;
137	SV **stack_sp;
138	OP *op;
139	SV **curpad;
140	AV *comppad;
141	CV *compcv;
142	SV **stack_base;
143	SV **stack_max;
144	SV **tmps_stack;
145	I32 tmps_floor;
146	I32 tmps_ix;
147	I32 tmps_max;
148	I32 *markstack;
149	I32 *markstack_ptr;
150	I32 *markstack_max;
151	I32 *scopestack;
152	I32 scopestack_ix;
153	I32 scopestack_max;
154	ANY *savestack;
155	I32 savestack_ix;
156	I32 savestack_max;
157	OP **retstack;
158	I32 retstack_ix;
159	I32 retstack_max;
160	PMOP *curpm;
161	COP *curcop;
162		166
163	/* coro process data */	167	/* coro process data */
164	int prio;	168	int prio;
165	};	169	};
166		170
…		…
230		234
231	#define PERL_MAGIC_coro PERL_MAGIC_ext	235	#define PERL_MAGIC_coro PERL_MAGIC_ext
232		236
233	static MGVTBL vtbl_coro = {0, 0, 0, 0, coro_cv_free};	237	static MGVTBL vtbl_coro = {0, 0, 0, 0, coro_cv_free};
234		238
		239	#define CORO_MAGIC(cv) \
		240	SvMAGIC (cv) \
		241	? SvMAGIC (cv)->mg_type == PERL_MAGIC_coro \
		242	? SvMAGIC (cv) \
		243	: mg_find ((SV *)cv, PERL_MAGIC_coro) \
		244	: 0
		245
235	/* the next two functions merely cache the padlists */	246	/* the next two functions merely cache the padlists */
236	static void	247	static void
237	get_padlist (CV *cv)	248	get_padlist (CV *cv)
238	{	249	{
239	MAGIC mg = mg_find ((SV )cv, PERL_MAGIC_coro);	250	MAGIC *mg = CORO_MAGIC (cv);
		251	AV *av;
240		252
241	if (mg && AvFILLp ((AV *)mg->mg_obj) >= 0)	253	if (mg && AvFILLp ((av = (AV *)mg->mg_obj)) >= 0)
242	CvPADLIST (cv) = (AV )av_pop ((AV )mg->mg_obj);	254	CvPADLIST (cv) = (AV *)AvARRAY (av)[AvFILLp (av)--];
243	else	255	else
244	{	256	{
245	#if 0	257	#if 0
246	/* this is probably cleaner, but also slower? */	258	/* this is probably cleaner, but also slower? */
247	CV *cp = Perl_cv_clone (cv);	259	CV *cp = Perl_cv_clone (cv);
…		…
255	}	267	}
256		268
257	static void	269	static void
258	put_padlist (CV *cv)	270	put_padlist (CV *cv)
259	{	271	{
260	MAGIC mg = mg_find ((SV )cv, PERL_MAGIC_coro);	272	MAGIC *mg = CORO_MAGIC (cv);
		273	AV *av;
261		274
262	if (!mg)	275	if (!mg)
263	{	276	{
264	sv_magic ((SV *)cv, 0, PERL_MAGIC_coro, 0, 0);	277	sv_magic ((SV *)cv, 0, PERL_MAGIC_coro, 0, 0);
265	mg = mg_find ((SV *)cv, PERL_MAGIC_coro);	278	mg = mg_find ((SV *)cv, PERL_MAGIC_coro);
266	mg->mg_virtual = &vtbl_coro;	279	mg->mg_virtual = &vtbl_coro;
267	mg->mg_obj = (SV *)newAV ();	280	mg->mg_obj = (SV *)newAV ();
268	}	281	}
269		282
270	av_push ((AV )mg->mg_obj, (SV )CvPADLIST (cv));	283	av = (AV *)mg->mg_obj;
		284
		285	if (AvFILLp (av) >= AvMAX (av))
		286	av_extend (av, AvMAX (av) + 1);
		287
		288	AvARRAY (av)[++AvFILLp (av)] = (SV *)CvPADLIST (cv);
271	}	289	}
272		290
273	#define SB do {	291	#define SB do {
274	#define SE } while (0)	292	#define SE } while (0)
275		293
276	#define LOAD(state) load_state((state));
277	#define SAVE(state,flags) save_state((state),(flags));
278
279	#define REPLACE_SV(sv,val) SB SvREFCNT_dec(sv); (sv) = (val); (val) = 0; SE	294	#define REPLACE_SV(sv,val) SB SvREFCNT_dec (sv); (sv) = (val); (val) = 0; SE
280		295
281	static void	296	static void
282	load_state(Coro__State c)	297	load_perl (Coro__State c)
283	{	298	{
284	PL_dowarn = c->dowarn;	299	#define VAR(name,type) PL_ ## name = c->name;
285	PL_in_eval = c->in_eval;	300	# include "state.h"
286		301	#undef VAR
287	PL_curstackinfo = c->curstackinfo;
288	PL_curstack = c->curstack;
289	PL_mainstack = c->mainstack;
290	PL_stack_sp = c->stack_sp;
291	PL_op = c->op;
292	PL_curpad = c->curpad;
293	PL_comppad = c->comppad;
294	PL_compcv = c->compcv;
295	PL_stack_base = c->stack_base;
296	PL_stack_max = c->stack_max;
297	PL_tmps_stack = c->tmps_stack;
298	PL_tmps_floor = c->tmps_floor;
299	PL_tmps_ix = c->tmps_ix;
300	PL_tmps_max = c->tmps_max;
301	PL_markstack = c->markstack;
302	PL_markstack_ptr = c->markstack_ptr;
303	PL_markstack_max = c->markstack_max;
304	PL_scopestack = c->scopestack;
305	PL_scopestack_ix = c->scopestack_ix;
306	PL_scopestack_max = c->scopestack_max;
307	PL_savestack = c->savestack;
308	PL_savestack_ix = c->savestack_ix;
309	PL_savestack_max = c->savestack_max;
310	#if !PERL_VERSION_ATLEAST (5,9,0)
311	PL_retstack = c->retstack;
312	PL_retstack_ix = c->retstack_ix;
313	PL_retstack_max = c->retstack_max;
314	#endif
315	PL_curpm = c->curpm;
316	PL_curcop = c->curcop;
317		302
318	if (c->defav) REPLACE_SV (GvAV (PL_defgv), c->defav);	303	if (c->defav) REPLACE_SV (GvAV (PL_defgv), c->defav);
319	if (c->defsv) REPLACE_SV (DEFSV , c->defsv);	304	if (c->defsv) REPLACE_SV (DEFSV , c->defsv);
320	if (c->errsv) REPLACE_SV (ERRSV , c->errsv);	305	if (c->errsv) REPLACE_SV (ERRSV , c->errsv);
		306	if (c->irssv) REPLACE_SV (PL_rs , c->irssv);
321		307
322	{	308	{
323	dSP;	309	dSP;
324	CV *cv;	310	CV *cv;
325		311
326	/* now do the ugly restore mess */	312	/* now do the ugly restore mess */
327	while ((cv = (CV *)POPs))	313	while ((cv = (CV *)POPs))
328	{	314	{
329	AV padlist = (AV )POPs;
330
331	if (padlist)
332	{
333	put_padlist (cv); /* mark this padlist as available */	315	put_padlist (cv); /* mark this padlist as available */
334	CvPADLIST(cv) = padlist;	316	CvDEPTH (cv) = PTR2IV (POPs);
335	}	317	CvPADLIST (cv) = (AV *)POPs;
336
337	++CvDEPTH(cv);
338	}	318	}
339		319
340	PUTBACK;	320	PUTBACK;
341	}	321	}
342	}	322	}
343		323
344	static void	324	static void
345	save_state(Coro__State c, int flags)	325	save_perl (Coro__State c)
346	{	326	{
347	{	327	{
348	dSP;	328	dSP;
349	I32 cxix = cxstack_ix;	329	I32 cxix = cxstack_ix;
350	PERL_CONTEXT *ccstk = cxstack;	330	PERL_CONTEXT *ccstk = cxstack;
…		…
361	{	341	{
362	while (cxix >= 0)	342	while (cxix >= 0)
363	{	343	{
364	PERL_CONTEXT *cx = &ccstk[cxix--];	344	PERL_CONTEXT *cx = &ccstk[cxix--];
365		345
366	if (CxTYPE(cx) == CXt_SUB)	346	if (CxTYPE (cx) == CXt_SUB)
367	{	347	{
368	CV *cv = cx->blk_sub.cv;	348	CV *cv = cx->blk_sub.cv;
		349
369	if (CvDEPTH(cv))	350	if (CvDEPTH (cv))
370	{	351	{
371	EXTEND (SP, CvDEPTH(cv)*2);	352	EXTEND (SP, 3);
372		353
373	while (--CvDEPTH(cv))
374	{
375	/* this tells the restore code to increment CvDEPTH */
376	PUSHs (Nullsv);
377	PUSHs ((SV *)cv);
378	}
379
380	PUSHs ((SV *)CvPADLIST(cv));	354	PUSHs ((SV *)CvPADLIST (cv));
		355	PUSHs (INT2PTR (SV *, CvDEPTH (cv)));
381	PUSHs ((SV *)cv);	356	PUSHs ((SV *)cv);
382		357
		358	CvDEPTH (cv) = 0;
383	get_padlist (cv);	359	get_padlist (cv);
384	}	360	}
385	}	361	}
386	#ifdef CXt_FORMAT	362	#ifdef CXt_FORMAT
387	else if (CxTYPE(cx) == CXt_FORMAT)	363	else if (CxTYPE (cx) == CXt_FORMAT)
388	{	364	{
389	/* I never used formats, so how should I know how these are implemented? */	365	/* I never used formats, so how should I know how these are implemented? */
390	/* my bold guess is as a simple, plain sub... */	366	/* my bold guess is as a simple, plain sub... */
391	croak ("CXt_FORMAT not yet handled. Don't switch coroutines from within formats");	367	croak ("CXt_FORMAT not yet handled. Don't switch coroutines from within formats");
392	}	368	}
…		…
402	}	378	}
403		379
404	PUTBACK;	380	PUTBACK;
405	}	381	}
406		382
407	c->defav = flags & TRANSFER_SAVE_DEFAV ? (AV *)SvREFCNT_inc (GvAV (PL_defgv)) : 0;	383	c->defav = c->save & CORO_SAVE_DEFAV ? (AV *)SvREFCNT_inc (GvAV (PL_defgv)) : 0;
408	c->defsv = flags & TRANSFER_SAVE_DEFSV ? SvREFCNT_inc (DEFSV) : 0;	384	c->defsv = c->save & CORO_SAVE_DEFSV ? SvREFCNT_inc (DEFSV) : 0;
409	c->errsv = flags & TRANSFER_SAVE_ERRSV ? SvREFCNT_inc (ERRSV) : 0;	385	c->errsv = c->save & CORO_SAVE_ERRSV ? SvREFCNT_inc (ERRSV) : 0;
		386	c->irssv = c->save & CORO_SAVE_IRSSV ? SvREFCNT_inc (PL_rs) : 0;
410		387
411	c->dowarn = PL_dowarn;	388	#define VAR(name,type)c->name = PL_ ## name;
412	c->in_eval = PL_in_eval;	389	# include "state.h"
413		390	#undef VAR
414	c->curstackinfo = PL_curstackinfo;
415	c->curstack = PL_curstack;
416	c->mainstack = PL_mainstack;
417	c->stack_sp = PL_stack_sp;
418	c->op = PL_op;
419	c->curpad = PL_curpad;
420	c->comppad = PL_comppad;
421	c->compcv = PL_compcv;
422	c->stack_base = PL_stack_base;
423	c->stack_max = PL_stack_max;
424	c->tmps_stack = PL_tmps_stack;
425	c->tmps_floor = PL_tmps_floor;
426	c->tmps_ix = PL_tmps_ix;
427	c->tmps_max = PL_tmps_max;
428	c->markstack = PL_markstack;
429	c->markstack_ptr = PL_markstack_ptr;
430	c->markstack_max = PL_markstack_max;
431	c->scopestack = PL_scopestack;
432	c->scopestack_ix = PL_scopestack_ix;
433	c->scopestack_max = PL_scopestack_max;
434	c->savestack = PL_savestack;
435	c->savestack_ix = PL_savestack_ix;
436	c->savestack_max = PL_savestack_max;
437	#if !PERL_VERSION_ATLEAST (5,9,0)
438	c->retstack = PL_retstack;
439	c->retstack_ix = PL_retstack_ix;
440	c->retstack_max = PL_retstack_max;
441	#endif
442	c->curpm = PL_curpm;
443	c->curcop = PL_curcop;
444	}	391	}
445		392
446	/*	393	/*
447	* allocate various perl stacks. This is an exact copy	394	* allocate various perl stacks. This is an exact copy
448	* of perl.c:init_stacks, except that it uses less memory	395	* of perl.c:init_stacks, except that it uses less memory
…		…
450	* not usually need a lot of stackspace.	397	* not usually need a lot of stackspace.
451	*/	398	*/
452	static void	399	static void
453	coro_init_stacks ()	400	coro_init_stacks ()
454	{	401	{
455	PL_curstackinfo = new_stackinfo(96, 1024/sizeof(PERL_CONTEXT) - 1);	402	PL_curstackinfo = new_stackinfo(128, 1024/sizeof(PERL_CONTEXT));
456	PL_curstackinfo->si_type = PERLSI_MAIN;	403	PL_curstackinfo->si_type = PERLSI_MAIN;
457	PL_curstack = PL_curstackinfo->si_stack;	404	PL_curstack = PL_curstackinfo->si_stack;
458	PL_mainstack = PL_curstack; /* remember in case we switch stacks */	405	PL_mainstack = PL_curstack; /* remember in case we switch stacks */
459		406
460	PL_stack_base = AvARRAY(PL_curstack);	407	PL_stack_base = AvARRAY(PL_curstack);
461	PL_stack_sp = PL_stack_base;	408	PL_stack_sp = PL_stack_base;
462	PL_stack_max = PL_stack_base + AvMAX(PL_curstack);	409	PL_stack_max = PL_stack_base + AvMAX(PL_curstack);
463		410
464	New(50,PL_tmps_stack,96,SV*);	411	New(50,PL_tmps_stack,128,SV*);
465	PL_tmps_floor = -1;	412	PL_tmps_floor = -1;
466	PL_tmps_ix = -1;	413	PL_tmps_ix = -1;
467	PL_tmps_max = 96;	414	PL_tmps_max = 128;
468		415
469	New(54,PL_markstack,16,I32);	416	New(54,PL_markstack,32,I32);
470	PL_markstack_ptr = PL_markstack;	417	PL_markstack_ptr = PL_markstack;
471	PL_markstack_max = PL_markstack + 16;	418	PL_markstack_max = PL_markstack + 32;
472		419
473	#ifdef SET_MARK_OFFSET	420	#ifdef SET_MARK_OFFSET
474	SET_MARK_OFFSET;	421	SET_MARK_OFFSET;
475	#endif	422	#endif
476		423
477	New(54,PL_scopestack,16,I32);	424	New(54,PL_scopestack,32,I32);
478	PL_scopestack_ix = 0;	425	PL_scopestack_ix = 0;
479	PL_scopestack_max = 16;	426	PL_scopestack_max = 32;
480		427
481	New(54,PL_savestack,96,ANY);	428	New(54,PL_savestack,64,ANY);
482	PL_savestack_ix = 0;	429	PL_savestack_ix = 0;
483	PL_savestack_max = 96;	430	PL_savestack_max = 64;
484		431
485	#if !PERL_VERSION_ATLEAST (5,9,0)	432	#if !PERL_VERSION_ATLEAST (5,9,0)
486	New(54,PL_retstack,8,OP*);	433	New(54,PL_retstack,16,OP*);
487	PL_retstack_ix = 0;	434	PL_retstack_ix = 0;
488	PL_retstack_max = 8;	435	PL_retstack_max = 16;
489	#endif	436	#endif
490	}	437	}
491		438
492	/*	439	/*
493	* destroy the stacks, the callchain etc...	440	* destroy the stacks, the callchain etc...
494	*/	441	*/
495	static void	442	static void
496	destroy_stacks()	443	coro_destroy_stacks ()
497	{	444	{
498	if (!IN_DESTRUCT)	445	if (!IN_DESTRUCT)
499	{	446	{
500	/* is this ugly, I ask? */	447	/* is this ugly, I ask? */
501	LEAVE_SCOPE (0);	448	LEAVE_SCOPE (0);
…		…
543	setup_coro (struct coro *coro)	490	setup_coro (struct coro *coro)
544	{	491	{
545	/*	492	/*
546	* emulate part of the perl startup here.	493	* emulate part of the perl startup here.
547	*/	494	*/
548	dTHX;
549	dSP;
550	UNOP myop;
551	SV sub_init = (SV )get_cv ("Coro::State::coro_init", FALSE);
552		495
553	coro_init_stacks ();	496	coro_init_stacks ();
554	/PL_curcop = 0;/	497
555	/PL_in_eval = PL_in_eval;/ /* inherit */	498	PL_curcop = &PL_compiling;
		499	PL_in_eval = EVAL_NULL;
		500	PL_curpm = 0;
		501	PL_localizing = 0;
		502	PL_dirty = 0;
		503	PL_restartop = 0;
		504
		505	{
		506	dSP;
		507	LOGOP myop;
		508
556	SvREFCNT_dec (GvAV (PL_defgv));	509	SvREFCNT_dec (GvAV (PL_defgv));
557	GvAV (PL_defgv) = coro->args; coro->args = 0;	510	GvAV (PL_defgv) = coro->args; coro->args = 0;
558		511
559	SPAGAIN;
560
561	Zero (&myop, 1, UNOP);	512	Zero (&myop, 1, LOGOP);
562	myop.op_next = Nullop;	513	myop.op_next = Nullop;
563	myop.op_flags = OPf_WANT_VOID;	514	myop.op_flags = OPf_WANT_VOID;
564		515
		516	PUSHMARK (SP);
		517	XPUSHs ((SV *)get_cv ("Coro::State::_coro_init", FALSE));
		518	PUTBACK;
565	PL_op = (OP *)&myop;	519	PL_op = (OP *)&myop;
566
567	PUSHMARK(SP);
568	XPUSHs (sub_init);
569	PUTBACK;
570	PL_op = PL_ppaddr[OP_ENTERSUB](aTHX);	520	PL_op = PL_ppaddr[OP_ENTERSUB](aTHX);
571	SPAGAIN;	521	SPAGAIN;
		522	}
572		523
573	ENTER; /* necessary e.g. for dounwind */	524	ENTER; /* necessary e.g. for dounwind */
574	}	525	}
575		526
576	static void	527	static void
…		…
581	SvREFCNT_dec (coro_mortal);	532	SvREFCNT_dec (coro_mortal);
582	coro_mortal = 0;	533	coro_mortal = 0;
583	}	534	}
584	}	535	}
585		536
		537	/* inject a fake call to Coro::State::_cctx_init into the execution */
586	static void NOINLINE	538	static void NOINLINE
587	prepare_cctx (coro_stack *cctx)	539	prepare_cctx (coro_cctx *cctx)
588	{	540	{
589	dSP;	541	dSP;
590	UNOP myop;	542	LOGOP myop;
591		543
592	Zero (&myop, 1, UNOP);	544	Zero (&myop, 1, LOGOP);
593	myop.op_next = PL_op;	545	myop.op_next = PL_op;
594	myop.op_flags = OPf_WANT_VOID \| OPf_STACKED;	546	myop.op_flags = OPf_WANT_VOID \| OPf_STACKED;
595		547
596	PUSHMARK(SP);	548	PUSHMARK (SP);
597	EXTEND (SP, 2);	549	EXTEND (SP, 2);
598	PUSHs (newSViv (PTR2IV (cctx)));	550	PUSHs (sv_2mortal (newSViv (PTR2IV (cctx))));
599	PUSHs ((SV *)get_cv ("Coro::State::cctx_init", FALSE));	551	PUSHs ((SV *)get_cv ("Coro::State::_cctx_init", FALSE));
600	PUTBACK;	552	PUTBACK;
		553	PL_op = (OP *)&myop;
601	PL_restartop = PL_ppaddr[OP_ENTERSUB](aTHX);	554	PL_op = PL_ppaddr[OP_ENTERSUB](aTHX);
602	SPAGAIN;	555	SPAGAIN;
603	}	556	}
604		557
605	static void	558	static void
606	coro_run (void *arg)	559	coro_run (void *arg)
607	{	560	{
		561	/* coro_run is the alternative tail of transfer(), so unlock here. */
		562	UNLOCK;
		563
608	/*	564	/*
609	* this is a _very_ stripped down perl interpreter ;)	565	* this is a _very_ stripped down perl interpreter ;)
610	*/	566	*/
611	UNLOCK;
612
613	PL_top_env = &PL_start_env;	567	PL_top_env = &PL_start_env;
		568
		569	/* inject call to cctx_init */
614	prepare_cctx ((coro_stack *)arg);	570	prepare_cctx ((coro_cctx *)arg);
615		571
616	/* somebody will hit me for both perl_run and PL_restartop */	572	/* somebody will hit me for both perl_run and PL_restartop */
617	perl_run (PERL_GET_CONTEXT);	573	PL_restartop = PL_op;
		574	perl_run (PL_curinterp);
618		575
619	fputs ("FATAL: C coroutine fell over the edge of the world, aborting.\n", stderr);	576	fputs ("FATAL: C coroutine fell over the edge of the world, aborting. Did you call exit in a coroutine?\n", stderr);
620	abort ();	577	abort ();
621	}	578	}
622		579
623	static coro_stack *	580	static coro_cctx *
624	stack_new ()	581	cctx_new ()
625	{	582	{
626	coro_stack *stack;	583	coro_cctx *cctx;
627		584
		585	++cctx_count;
		586
628	New (0, stack, 1, coro_stack);	587	New (0, cctx, 1, coro_cctx);
629		588
630	#if HAVE_MMAP	589	#if HAVE_MMAP
631		590
632	stack->ssize = ((STACKSIZE * sizeof (long) + PAGESIZE - 1) / PAGESIZE + STACKGUARD) * PAGESIZE;	591	cctx->ssize = ((STACKSIZE * sizeof (long) + PAGESIZE - 1) / PAGESIZE + STACKGUARD) * PAGESIZE;
633	/* mmap suppsedly does allocate-on-write for us */	592	/* mmap supposedly does allocate-on-write for us */
634	stack->sptr = mmap (0, stack->ssize, PROT_EXEC\|PROT_READ\|PROT_WRITE, MAP_PRIVATE\|MAP_ANONYMOUS, 0, 0);	593	cctx->sptr = mmap (0, cctx->ssize, PROT_EXEC\|PROT_READ\|PROT_WRITE, MAP_PRIVATE\|MAP_ANONYMOUS, 0, 0);
635		594
636	if (stack->sptr == (void *)-1)	595	if (cctx->sptr == (void *)-1)
637	{	596	{
638	perror ("FATAL: unable to mmap stack for coroutine");	597	perror ("FATAL: unable to mmap stack for coroutine");
639	_exit (EXIT_FAILURE);	598	_exit (EXIT_FAILURE);
640	}	599	}
641		600
642	# if STACKGUARD	601	# if STACKGUARD
643	mprotect (stack->sptr, STACKGUARD * PAGESIZE, PROT_NONE);	602	mprotect (cctx->sptr, STACKGUARD * PAGESIZE, PROT_NONE);
644	# endif	603	# endif
645		604
646	#else	605	#else
647		606
648	stack->ssize = STACKSIZE * (long)sizeof (long);	607	cctx->ssize = STACKSIZE * (long)sizeof (long);
649	New (0, stack->sptr, STACKSIZE, long);	608	New (0, cctx->sptr, STACKSIZE, long);
650		609
651	if (!stack->sptr)	610	if (!cctx->sptr)
652	{	611	{
653	perror (stderr, "FATAL: unable to malloc stack for coroutine");	612	perror ("FATAL: unable to malloc stack for coroutine");
654	_exit (EXIT_FAILURE);	613	_exit (EXIT_FAILURE);
655	}	614	}
656		615
657	#endif	616	#endif
658		617
		618	#if USE_VALGRIND
		619	cctx->valgrind_id = VALGRIND_STACK_REGISTER (
		620	STACKGUARD * PAGESIZE + (char *)cctx->sptr,
		621	cctx->ssize + (char *)cctx->sptr
		622	);
		623	#endif
		624
659	coro_create (&stack->cctx, coro_run, (void *)stack, stack->sptr, stack->ssize);	625	coro_create (&cctx->cctx, coro_run, (void *)cctx, cctx->sptr, cctx->ssize);
660		626
661	return stack;	627	return cctx;
662	}	628	}
663		629
664	static void	630	static void
665	stack_free (coro_stack *stack)	631	cctx_destroy (coro_cctx *cctx)
666	{	632	{
667	if (!stack)	633	if (!cctx)
668	return;	634	return;
669		635
		636	--cctx_count;
		637
		638	#if USE_VALGRIND
		639	VALGRIND_STACK_DEREGISTER (cctx->valgrind_id);
		640	#endif
		641
670	#if HAVE_MMAP	642	#if HAVE_MMAP
671	munmap (stack->sptr, stack->ssize);	643	munmap (cctx->sptr, cctx->ssize);
672	#else	644	#else
673	Safefree (stack->sptr);	645	Safefree (cctx->sptr);
674	#endif	646	#endif
675		647
676	Safefree (stack);	648	Safefree (cctx);
677	}	649	}
678		650
679	static coro_stack *stack_first;
680
681	static coro_stack *	651	static coro_cctx *
682	stack_get ()	652	cctx_get ()
683	{	653	{
684	coro_stack *stack;	654	coro_cctx *cctx;
685		655
686	if (stack_first)	656	if (cctx_first)
687	{	657	{
688	stack = stack_first;	658	cctx = cctx_first;
689	stack_first = stack->next;	659	cctx_first = cctx->next;
		660	--cctx_idle;
690	}	661	}
691	else	662	else
692	{	663	{
693	stack = stack_new ();	664	cctx = cctx_new ();
694	PL_op = PL_op->op_next;	665	PL_op = PL_op->op_next;
695	}	666	}
696		667
697	return stack;	668	return cctx;
698	}	669	}
699		670
700	static void	671	static void
701	stack_put (coro_stack *stack)	672	cctx_put (coro_cctx *cctx)
702	{	673	{
703	stack->next = stack_first;	674	/* free another cctx if overlimit */
704	stack_first = stack;	675	if (cctx_idle >= MAX_IDLE_CCTX)
		676	{
		677	coro_cctx *first = cctx_first;
		678	cctx_first = first->next;
		679	--cctx_idle;
		680
		681	assert (!first->inuse);
		682	cctx_destroy (first);
		683	}
		684
		685	++cctx_idle;
		686	cctx->next = cctx_first;
		687	cctx_first = cctx;
705	}	688	}
706		689
707	/* never call directly, always through the coro_state_transfer global variable */	690	/* never call directly, always through the coro_state_transfer global variable */
708	static void NOINLINE	691	static void NOINLINE
709	transfer (struct coro prev, struct coro next, int flags)	692	transfer (struct coro prev, struct coro next)
710	{	693	{
711	dSTACKLEVEL;	694	dSTACKLEVEL;
712		695
713	/* sometimes transfer is only called to set idle_sp */	696	/* sometimes transfer is only called to set idle_sp */
714	if (flags == TRANSFER_SET_STACKLEVEL)	697	if (!next)
715	((coro_stack *)prev)->idle_sp = STACKLEVEL;	698	((coro_cctx *)prev)->idle_sp = STACKLEVEL;
716	else if (prev != next)	699	else if (prev != next)
717	{	700	{
718	coro_stack *prev__stack;	701	coro_cctx *prev__cctx;
		702
		703	if (prev->flags & CF_NEW)
		704	{
		705	/* create a new empty context */
		706	Newz (0, prev->cctx, 1, coro_cctx);
		707	prev->cctx->inuse = 1;
		708	prev->flags &= ~CF_NEW;
		709	prev->flags \|= CF_RUNNING;
		710	}
		711
		712	/TODO: must not croak here /
		713	if (!prev->flags & CF_RUNNING)
		714	croak ("Coro::State::transfer called with non-running prev Coro::State, but can only transfer from running states");
		715
		716	if (next->flags & CF_RUNNING)
		717	croak ("Coro::State::transfer called with running next Coro::State, but can only transfer to inactive states");
		718
		719	prev->flags &= ~CF_RUNNING;
		720	next->flags \|= CF_RUNNING;
719		721
720	LOCK;	722	LOCK;
721		723
722	if (next->mainstack)	724	if (next->flags & CF_NEW)
723	{	725	{
724	/* coroutine already started */	726	/* need to start coroutine */
725	SAVE (prev, flags);	727	next->flags &= ~CF_NEW;
726	LOAD (next);	728	/* first get rid of the old state */
		729	save_perl (prev);
		730	/* setup coroutine call */
		731	setup_coro (next);
		732	/* need a new stack */
		733	assert (!next->stack);
727	}	734	}
728	else	735	else
729	{	736	{
730	/* need to start coroutine */	737	/* coroutine already started */
731	/* first get rid of the old state */	738	save_perl (prev);
732	SAVE (prev, -1);	739	load_perl (next);
733	/* setup coroutine call */
734	setup_coro (next);
735	/* need a stack */
736	next->stack = 0;
737	}	740	}
738		741
739	if (!prev->stack)
740	/* create a new empty context */
741	Newz (0, prev->stack, 1, coro_stack);
742
743	prev__stack = prev->stack;	742	prev__cctx = prev->cctx;
744		743
745	/* possibly "free" the stack */	744	/* possibly "free" the cctx */
746	if (prev__stack->idle_sp == STACKLEVEL)	745	if (prev__cctx->idle_sp == STACKLEVEL)
747	{	746	{
748	stack_put (prev__stack);	747	/* I assume that STACKLEVEL is a stronger indicator than PL_top_env changes */
		748	assert (PL_top_env == prev__cctx->top_env);
		749
749	prev->stack = 0;	750	prev->cctx = 0;
		751
		752	cctx_put (prev__cctx);
		753	prev__cctx->inuse = 0;
750	}	754	}
751		755
752	if (!next->stack)	756	if (!next->cctx)
753	next->stack = stack_get ();
754
755	if (prev__stack != next->stack)
756	{	757	{
		758	next->cctx = cctx_get ();
		759	assert (!next->cctx->inuse);
		760	next->cctx->inuse = 1;
		761	}
		762
		763	if (prev__cctx != next->cctx)
		764	{
757	prev__stack->top_env = PL_top_env;	765	prev__cctx->top_env = PL_top_env;
758	PL_top_env = next->stack->top_env;	766	PL_top_env = next->cctx->top_env;
759	coro_transfer (&prev__stack->cctx, &next->stack->cctx);	767	coro_transfer (&prev__cctx->cctx, &next->cctx->cctx);
760	}	768	}
761		769
762	free_coro_mortal ();	770	free_coro_mortal ();
763		771
764	UNLOCK;	772	UNLOCK;
…		…
766	}	774	}
767		775
768	struct transfer_args	776	struct transfer_args
769	{	777	{
770	struct coro prev, next;	778	struct coro prev, next;
771	int flags;
772	};	779	};
773		780
774	#define TRANSFER(ta) transfer ((ta).prev, (ta).next, (ta).flags)	781	#define TRANSFER(ta) transfer ((ta).prev, (ta).next)
775		782
776	static void	783	static void
777	coro_state_destroy (struct coro *coro)	784	coro_state_destroy (struct coro *coro)
778	{	785	{
779	if (coro->refcnt--)	786	if (coro->refcnt--)
780	return;	787	return;
781		788
782	if (coro->mainstack && coro->mainstack != main_mainstack)	789	if (coro->mainstack && coro->mainstack != main_mainstack)
783	{	790	{
784	struct coro temp;	791	struct coro temp;
		792	Zero (&temp, 1, struct coro);
		793	temp.save = CORO_SAVE_ALL;
785		794
786	SAVE ((&temp), TRANSFER_SAVE_ALL);	795	if (coro->flags & CF_RUNNING)
787	LOAD (coro);	796	croak ("FATAL: tried to destroy currently running coroutine");
788		797
		798	save_perl (&temp);
		799	load_perl (coro);
		800
789	destroy_stacks ();	801	coro_destroy_stacks ();
790		802
791	LOAD ((&temp)); /* this will get rid of defsv etc.. */	803	load_perl (&temp); /* this will get rid of defsv etc.. */
792		804
793	coro->mainstack = 0;	805	coro->mainstack = 0;
794	}	806	}
795		807
796	stack_free (coro->stack);	808	cctx_destroy (coro->cctx);
797	SvREFCNT_dec (coro->args);	809	SvREFCNT_dec (coro->args);
798	Safefree (coro);	810	Safefree (coro);
799	}	811	}
800		812
801	static int	813	static int
…		…
823	0, 0, 0, 0,	835	0, 0, 0, 0,
824	coro_state_clear,	836	coro_state_clear,
825	0,	837	0,
826	#ifdef MGf_DUP	838	#ifdef MGf_DUP
827	coro_state_dup,	839	coro_state_dup,
		840	#else
		841	# define MGf_DUP 0
828	#endif	842	#endif
829	};	843	};
830		844
831	static struct coro *	845	static struct coro *
832	SvSTATE (SV *coro)	846	SvSTATE (SV *coro)
…		…
849	assert (mg->mg_type == PERL_MAGIC_ext);	863	assert (mg->mg_type == PERL_MAGIC_ext);
850	return (struct coro *)mg->mg_ptr;	864	return (struct coro *)mg->mg_ptr;
851	}	865	}
852		866
853	static void	867	static void
854	prepare_transfer (struct transfer_args ta, SV prev, SV *next, int flags)	868	prepare_transfer (struct transfer_args ta, SV prev_sv, SV *next_sv)
855	{	869	{
856	ta->prev = SvSTATE (prev);	870	ta->prev = SvSTATE (prev_sv);
857	ta->next = SvSTATE (next);	871	ta->next = SvSTATE (next_sv);
858	ta->flags = flags;
859	}	872	}
860		873
861	static void	874	static void
862	api_transfer (SV prev, SV next, int flags)	875	api_transfer (SV prev_sv, SV next_sv)
863	{	876	{
864	dTHX;
865	struct transfer_args ta;	877	struct transfer_args ta;
866		878
867	prepare_transfer (&ta, prev, next, flags);	879	prepare_transfer (&ta, prev_sv, next_sv);
868	TRANSFER (ta);	880	TRANSFER (ta);
		881	}
		882
		883	static int
		884	api_save (SV *coro_sv, int new_save)
		885	{
		886	struct coro *coro = SvSTATE (coro_sv);
		887	int old_save = coro->save;
		888
		889	if (new_save >= 0)
		890	coro->save = new_save;
		891
		892	return old_save;
869	}	893	}
870		894
871	/ Coro ******************************************************************/	895	/ Coro ******************************************************************/
872		896
873	#define PRIO_MAX 3	897	#define PRIO_MAX 3
…		…
876	#define PRIO_LOW -1	900	#define PRIO_LOW -1
877	#define PRIO_IDLE -3	901	#define PRIO_IDLE -3
878	#define PRIO_MIN -4	902	#define PRIO_MIN -4
879		903
880	/* for Coro.pm */	904	/* for Coro.pm */
881	static GV coro_current, coro_idle;	905	static SV *coro_current;
882	static AV *coro_ready [PRIO_MAX-PRIO_MIN+1];	906	static AV *coro_ready [PRIO_MAX-PRIO_MIN+1];
883	static int coro_nready;	907	static int coro_nready;
884		908
885	static void	909	static void
886	coro_enq (SV *sv)	910	coro_enq (SV *coro_sv)
887	{	911	{
888	int prio;
889
890	if (SvTYPE (sv) != SVt_PVHV)
891	croak ("Coro::ready tried to enqueue something that is not a coroutine");
892
893	prio = SvSTATE (sv)->prio;
894
895	av_push (coro_ready [prio - PRIO_MIN], sv);	912	av_push (coro_ready [SvSTATE (coro_sv)->prio - PRIO_MIN], coro_sv);
896	coro_nready++;	913	coro_nready++;
897	}	914	}
898		915
899	static SV *	916	static SV *
900	coro_deq (int min_prio)	917	coro_deq (int min_prio)
…		…
913	}	930	}
914		931
915	return 0;	932	return 0;
916	}	933	}
917		934
918	static void	935	static int
919	api_ready (SV *coro)	936	api_ready (SV *coro_sv)
920	{	937	{
921	dTHX;	938	struct coro *coro;
922		939
923	if (SvROK (coro))	940	if (SvROK (coro_sv))
924	coro = SvRV (coro);	941	coro_sv = SvRV (coro_sv);
		942
		943	coro = SvSTATE (coro_sv);
		944
		945	if (coro->flags & CF_READY)
		946	return 0;
		947
		948	#if 0 /* this is actually harmless */
		949	if (coro->flags & CF_RUNNING)
		950	croak ("Coro::ready called on currently running coroutine");
		951	#endif
		952
		953	coro->flags \|= CF_READY;
925		954
926	LOCK;	955	LOCK;
927	coro_enq (SvREFCNT_inc (coro));	956	coro_enq (SvREFCNT_inc (coro_sv));
928	UNLOCK;	957	UNLOCK;
		958
		959	return 1;
		960	}
		961
		962	static int
		963	api_is_ready (SV *coro_sv)
		964	{
		965	return !!SvSTATE (coro_sv)->flags & CF_READY;
929	}	966	}
930		967
931	static void	968	static void
932	prepare_schedule (struct transfer_args *ta)	969	prepare_schedule (struct transfer_args *ta)
933	{	970	{
934	SV current, prev, *next;	971	SV prev, next;
935
936	current = GvSV (coro_current);
937		972
938	for (;;)	973	for (;;)
939	{	974	{
940	LOCK;	975	LOCK;
941	next = coro_deq (PRIO_MIN);	976	next = coro_deq (PRIO_MIN);
…		…
950	ENTER;	985	ENTER;
951	SAVETMPS;	986	SAVETMPS;
952		987
953	PUSHMARK (SP);	988	PUSHMARK (SP);
954	PUTBACK;	989	PUTBACK;
955	call_sv (GvSV (coro_idle), G_DISCARD);	990	call_sv (get_sv ("Coro::idle", FALSE), G_DISCARD);
956		991
957	FREETMPS;	992	FREETMPS;
958	LEAVE;	993	LEAVE;
959	}	994	}
960	}	995	}
961		996
962	prev = SvRV (current);	997	prev = SvRV (coro_current);
963	SvRV (current) = next;	998	SvRV_set (coro_current, next);
964		999
965	/* free this only after the transfer */	1000	/* free this only after the transfer */
966	LOCK;	1001	LOCK;
967	free_coro_mortal ();	1002	free_coro_mortal ();
968	UNLOCK;	1003	UNLOCK;
969	coro_mortal = prev;	1004	coro_mortal = prev;
970		1005
		1006	assert (!SvROK(prev));//D
		1007	assert (!SvROK(next));//D
		1008
971	ta->prev = SvSTATE (prev);	1009	ta->prev = SvSTATE (prev);
972	ta->next = SvSTATE (next);	1010	ta->next = SvSTATE (next);
973	ta->flags = TRANSFER_SAVE_ALL;	1011
		1012	assert (ta->next->flags & CF_READY);
		1013	ta->next->flags &= ~CF_READY;
974	}	1014	}
975		1015
976	static void	1016	static void
977	prepare_cede (struct transfer_args *ta)	1017	prepare_cede (struct transfer_args *ta)
978	{	1018	{
979	LOCK;	1019	api_ready (coro_current);
980	coro_enq (SvREFCNT_inc (SvRV (GvSV (coro_current))));
981	UNLOCK;
982		1020
983	prepare_schedule (ta);	1021	prepare_schedule (ta);
984	}	1022	}
985		1023
986	static void	1024	static void
987	api_schedule (void)	1025	api_schedule (void)
988	{	1026	{
989	dTHX;
990	struct transfer_args ta;	1027	struct transfer_args ta;
991		1028
992	prepare_schedule (&ta);	1029	prepare_schedule (&ta);
993	TRANSFER (ta);	1030	TRANSFER (ta);
994	}	1031	}
995		1032
996	static void	1033	static void
997	api_cede (void)	1034	api_cede (void)
998	{	1035	{
999	dTHX;
1000	struct transfer_args ta;	1036	struct transfer_args ta;
1001		1037
1002	prepare_cede (&ta);	1038	prepare_cede (&ta);
1003	TRANSFER (ta);	1039	TRANSFER (ta);
1004	}	1040	}
…		…
1014	#endif	1050	#endif
1015	BOOT_PAGESIZE;	1051	BOOT_PAGESIZE;
1016		1052
1017	coro_state_stash = gv_stashpv ("Coro::State", TRUE);	1053	coro_state_stash = gv_stashpv ("Coro::State", TRUE);
1018		1054
1019	newCONSTSUB (coro_state_stash, "SAVE_DEFAV", newSViv (TRANSFER_SAVE_DEFAV));	1055	newCONSTSUB (coro_state_stash, "SAVE_DEFAV", newSViv (CORO_SAVE_DEFAV));
1020	newCONSTSUB (coro_state_stash, "SAVE_DEFSV", newSViv (TRANSFER_SAVE_DEFSV));	1056	newCONSTSUB (coro_state_stash, "SAVE_DEFSV", newSViv (CORO_SAVE_DEFSV));
1021	newCONSTSUB (coro_state_stash, "SAVE_ERRSV", newSViv (TRANSFER_SAVE_ERRSV));	1057	newCONSTSUB (coro_state_stash, "SAVE_ERRSV", newSViv (CORO_SAVE_ERRSV));
		1058	newCONSTSUB (coro_state_stash, "SAVE_IRSSV", newSViv (CORO_SAVE_IRSSV));
		1059	newCONSTSUB (coro_state_stash, "SAVE_ALL", newSViv (CORO_SAVE_ALL));
1022		1060
1023	main_mainstack = PL_mainstack;	1061	main_mainstack = PL_mainstack;
1024		1062
1025	coroapi.ver = CORO_API_VERSION;	1063	coroapi.ver = CORO_API_VERSION;
1026	coroapi.transfer = api_transfer;	1064	coroapi.transfer = api_transfer;
…		…
1036	HV *hv;	1074	HV *hv;
1037	int i;	1075	int i;
1038		1076
1039	Newz (0, coro, 1, struct coro);	1077	Newz (0, coro, 1, struct coro);
1040	coro->args = newAV ();	1078	coro->args = newAV ();
		1079	coro->save = CORO_SAVE_ALL;
		1080	coro->flags = CF_NEW;
1041		1081
1042	hv = newHV ();	1082	hv = newHV ();
1043	sv_magicext ((SV )hv, 0, PERL_MAGIC_ext, &coro_state_vtbl, (char )coro, 0)->mg_flags \|= MGf_DUP;	1083	sv_magicext ((SV )hv, 0, PERL_MAGIC_ext, &coro_state_vtbl, (char )coro, 0)->mg_flags \|= MGf_DUP;
1044	RETVAL = sv_bless (newRV_noinc ((SV *)hv), gv_stashpv (klass, 1));	1084	RETVAL = sv_bless (newRV_noinc ((SV *)hv), gv_stashpv (klass, 1));
1045		1085
1046	for (i = 1; i < items; i++)	1086	for (i = 1; i < items; i++)
1047	av_push (coro->args, newSVsv (ST (i)));	1087	av_push (coro->args, newSVsv (ST (i)));
1048
1049	/coro->mainstack = 0; //actual work is done inside transfer /
1050	/coro->stack = 0;/
1051	}	1088	}
1052	OUTPUT:	1089	OUTPUT:
		1090	RETVAL
		1091
		1092	int
		1093	save (SV *coro, int new_save = -1)
		1094	CODE:
		1095	RETVAL = api_save (coro, new_save);
		1096	OUTPUT:
1053	RETVAL	1097	RETVAL
1054		1098
1055	void	1099	void
1056	_set_stacklevel (...)	1100	_set_stacklevel (...)
1057	ALIAS:	1101	ALIAS:
1058	Coro::State::transfer = 1	1102	Coro::State::transfer = 1
1059	Coro::schedule = 2	1103	Coro::schedule = 2
1060	Coro::cede = 3	1104	Coro::cede = 3
1061	Coro::Cont::yield = 4
1062	CODE:	1105	CODE:
1063	{	1106	{
1064	struct transfer_args ta;	1107	struct transfer_args ta;
1065		1108
1066	switch (ix)	1109	switch (ix)
1067	{	1110	{
1068	case 0:	1111	case 0:
1069	ta.prev = (struct coro )INT2PTR (coro_stack , SvIV (ST (0)));	1112	ta.prev = (struct coro )INT2PTR (coro_cctx , SvIV (ST (0)));
1070	ta.next = 0;	1113	ta.next = 0;
1071	ta.flags = TRANSFER_SET_STACKLEVEL;
1072	break;	1114	break;
1073		1115
1074	case 1:	1116	case 1:
1075	if (items != 3)	1117	if (items != 2)
1076	croak ("Coro::State::transfer(prev,next,flags) expects three arguments, not %d", items);	1118	croak ("Coro::State::transfer (prev,next) expects two arguments, not %d", items);
1077		1119
1078	prepare_transfer (&ta, ST (0), ST (1), SvIV (ST (2)));	1120	prepare_transfer (&ta, ST (0), ST (1));
1079	break;	1121	break;
1080		1122
1081	case 2:	1123	case 2:
1082	prepare_schedule (&ta);	1124	prepare_schedule (&ta);
1083	break;	1125	break;
1084		1126
1085	case 3:	1127	case 3:
1086	prepare_cede (&ta);	1128	prepare_cede (&ta);
1087	break;	1129	break;
1088
1089	case 4:
1090	{
1091	SV *yieldstack;
1092	SV *sv;
1093	AV *defav = GvAV (PL_defgv);
1094
1095	yieldstack = *hv_fetch (
1096	(HV *)SvRV (GvSV (coro_current)),
1097	"yieldstack", sizeof ("yieldstack") - 1,
1098	0
1099	);
1100
1101	/* set up @_ -- ugly */
1102	av_clear (defav);
1103	av_fill (defav, items - 1);
1104	while (items--)
1105	av_store (defav, items, SvREFCNT_inc (ST(items)));
1106
1107	sv = av_pop ((AV *)SvRV (yieldstack));
1108	ta.prev = SvSTATE (av_fetch ((AV )SvRV (sv), 0, 0));
1109	ta.next = SvSTATE (av_fetch ((AV )SvRV (sv), 1, 0));
1110	ta.flags = 0;
1111	SvREFCNT_dec (sv);
1112	}
1113	break;
1114
1115	}	1130	}
1116		1131
1117	TRANSFER (ta);	1132	TRANSFER (ta);
1118	}	1133	}
1119		1134
…		…
1134	int code	1149	int code
1135	PROTOTYPE: $	1150	PROTOTYPE: $
1136	CODE:	1151	CODE:
1137	_exit (code);	1152	_exit (code);
1138		1153
		1154	int
		1155	cctx_count ()
		1156	CODE:
		1157	RETVAL = cctx_count;
		1158	OUTPUT:
		1159	RETVAL
		1160
		1161	int
		1162	cctx_idle ()
		1163	CODE:
		1164	RETVAL = cctx_idle;
		1165	OUTPUT:
		1166	RETVAL
		1167
1139	MODULE = Coro::State PACKAGE = Coro	1168	MODULE = Coro::State PACKAGE = Coro
1140		1169
1141	BOOT:	1170	BOOT:
1142	{	1171	{
1143	int i;	1172	int i;
…		…
1149	newCONSTSUB (coro_stash, "PRIO_NORMAL", newSViv (PRIO_NORMAL));	1178	newCONSTSUB (coro_stash, "PRIO_NORMAL", newSViv (PRIO_NORMAL));
1150	newCONSTSUB (coro_stash, "PRIO_LOW", newSViv (PRIO_LOW));	1179	newCONSTSUB (coro_stash, "PRIO_LOW", newSViv (PRIO_LOW));
1151	newCONSTSUB (coro_stash, "PRIO_IDLE", newSViv (PRIO_IDLE));	1180	newCONSTSUB (coro_stash, "PRIO_IDLE", newSViv (PRIO_IDLE));
1152	newCONSTSUB (coro_stash, "PRIO_MIN", newSViv (PRIO_MIN));	1181	newCONSTSUB (coro_stash, "PRIO_MIN", newSViv (PRIO_MIN));
1153		1182
1154	coro_current = gv_fetchpv ("Coro::current", TRUE, SVt_PV);	1183	coro_current = get_sv ("Coro::current", FALSE);
1155	coro_idle = gv_fetchpv ("Coro::idle" , TRUE, SVt_PV);	1184	SvREADONLY_on (coro_current);
1156		1185
1157	for (i = PRIO_MAX - PRIO_MIN + 1; i--; )	1186	for (i = PRIO_MAX - PRIO_MIN + 1; i--; )
1158	coro_ready[i] = newAV ();	1187	coro_ready[i] = newAV ();
1159		1188
1160	{	1189	{
1161	SV *sv = perl_get_sv("Coro::API", 1);	1190	SV *sv = perl_get_sv("Coro::API", 1);
1162		1191
1163	coroapi.schedule = api_schedule;	1192	coroapi.schedule = api_schedule;
		1193	coroapi.save = api_save;
1164	coroapi.cede = api_cede;	1194	coroapi.cede = api_cede;
1165	coroapi.ready = api_ready;	1195	coroapi.ready = api_ready;
		1196	coroapi.is_ready = api_is_ready;
1166	coroapi.nready = &coro_nready;	1197	coroapi.nready = &coro_nready;
1167	coroapi.current = coro_current;	1198	coroapi.current = coro_current;
1168		1199
1169	GCoroAPI = &coroapi;	1200	GCoroAPI = &coroapi;
1170	sv_setiv (sv, (IV)&coroapi);	1201	sv_setiv (sv, (IV)&coroapi);
1171	SvREADONLY_on (sv);	1202	SvREADONLY_on (sv);
1172	}	1203	}
1173	}	1204	}
		1205
		1206	void
		1207	_set_current (SV *current)
		1208	PROTOTYPE: $
		1209	CODE:
		1210	SvREFCNT_dec (SvRV (coro_current));
		1211	SvRV_set (coro_current, SvREFCNT_inc (SvRV (current)));
1174		1212
1175	int	1213	int
1176	prio (Coro::State coro, int newprio = 0)	1214	prio (Coro::State coro, int newprio = 0)
1177	ALIAS:	1215	ALIAS:
1178	nice = 1	1216	nice = 1
…		…
1190		1228
1191	coro->prio = newprio;	1229	coro->prio = newprio;
1192	}	1230	}
1193	}	1231	}
1194		1232
1195	void	1233	SV *
1196	ready (SV *self)	1234	ready (SV *self)
1197	PROTOTYPE: $	1235	PROTOTYPE: $
1198	CODE:	1236	CODE:
1199	api_ready (self);	1237	RETVAL = boolSV (api_ready (self));
		1238	OUTPUT:
		1239	RETVAL
		1240
		1241	SV *
		1242	is_ready (SV *self)
		1243	PROTOTYPE: $
		1244	CODE:
		1245	RETVAL = boolSV (api_is_ready (self));
		1246	OUTPUT:
		1247	RETVAL
1200		1248
1201	int	1249	int
1202	nready (...)	1250	nready (...)
1203	PROTOTYPE:	1251	PROTOTYPE:
1204	CODE:	1252	CODE:
…		…
1210		1258
1211	SV *	1259	SV *
1212	_get_state ()	1260	_get_state ()
1213	CODE:	1261	CODE:
1214	{	1262	{
1215	struct {	1263	struct io_state *data;
1216	int errorno;
1217	int laststype;
1218	int laststatval;
1219	Stat_t statcache;
1220	} data;
1221		1264
		1265	RETVAL = newSV (sizeof (struct io_state));
		1266	data = (struct io_state *)SvPVX (RETVAL);
		1267	SvCUR_set (RETVAL, sizeof (struct io_state));
		1268	SvPOK_only (RETVAL);
		1269
1222	data.errorno = errno;	1270	data->errorno = errno;
1223	data.laststype = PL_laststype;	1271	data->laststype = PL_laststype;
1224	data.laststatval = PL_laststatval;	1272	data->laststatval = PL_laststatval;
1225	data.statcache = PL_statcache;	1273	data->statcache = PL_statcache;
1226
1227	RETVAL = newSVpvn ((char *)&data, sizeof data);
1228	}	1274	}
1229	OUTPUT:	1275	OUTPUT:
1230	RETVAL	1276	RETVAL
1231		1277
1232	void	1278	void
1233	_set_state (char *data_)	1279	_set_state (char *data_)
1234	PROTOTYPE: $	1280	PROTOTYPE: $
1235	CODE:	1281	CODE:
1236	{	1282	{
1237	struct {	1283	struct io_state data = (void )data_;
1238	int errorno;
1239	int laststype;
1240	int laststatval;
1241	Stat_t statcache;
1242	} data = (void )data_;
1243		1284
1244	errno = data->errorno;	1285	errno = data->errorno;
1245	PL_laststype = data->laststype;	1286	PL_laststype = data->laststype;
1246	PL_laststatval = data->laststatval;	1287	PL_laststatval = data->laststatval;
1247	PL_statcache = data->statcache;	1288	PL_statcache = data->statcache;
1248	}	1289	}
		1290

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Comparing Coro/Coro/State.xs (file contents): Revision 1.101 by root, Mon Nov 27 00:08:18 2006 UTC vs. Revision 1.122 by root, Mon Dec 4 13:47:56 2006 UTC

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Comparing Coro/Coro/State.xs (file contents):
Revision 1.101 by root, Mon Nov 27 00:08:18 2006 UTC vs.
Revision 1.122 by root, Mon Dec 4 13:47:56 2006 UTC