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

Comparing Coro/Coro/State.xs (file contents):
Revision 1.136 by root, Fri Jan 12 01:05:55 2007 UTC vs.
Revision 1.163 by root, Mon Sep 24 18:30:58 2007 UTC

…		…
1	#include "libcoro/coro.c"	1	#include "libcoro/coro.c"
		2
		3	#define PERL_NO_GET_CONTEXT
2		4
3	#include "EXTERN.h"	5	#include "EXTERN.h"
4	#include "perl.h"	6	#include "perl.h"
5	#include "XSUB.h"	7	#include "XSUB.h"
6		8
31	#else	33	#else
32	# define PAGESIZE 0	34	# define PAGESIZE 0
33	# define BOOT_PAGESIZE (void)0	35	# define BOOT_PAGESIZE (void)0
34	#endif	36	#endif
35		37
36	#if USE_VALGRIND	38	#if CORO_USE_VALGRIND
37	# include <valgrind/valgrind.h>	39	# include <valgrind/valgrind.h>
		40	# define REGISTER_STACK(cctx,start,end) (cctx)->valgrind_id = VALGRIND_STACK_REGISTER ((start), (end))
		41	#else
		42	# define REGISTER_STACK(cctx,start,end)
38	#endif	43	#endif
39		44
40	/* the maximum number of idle cctx that will be pooled */	45	/* the maximum number of idle cctx that will be pooled */
41	#define MAX_IDLE_CCTX 8	46	#define MAX_IDLE_CCTX 8
42		47
…		…
71	#ifndef SvRV_set	76	#ifndef SvRV_set
72	# define SvRV_set(s,v) SvRV(s) = (v)	77	# define SvRV_set(s,v) SvRV(s) = (v)
73	#endif	78	#endif
74		79
75	#if !__i386 && !__x86_64 && !__powerpc && !__m68k && !__alpha && !__mips && !__sparc64	80	#if !__i386 && !__x86_64 && !__powerpc && !__m68k && !__alpha && !__mips && !__sparc64
76	# undef STACKGUARD	81	# undef CORO_STACKGUARD
77	#endif	82	#endif
78		83
79	#ifndef STACKGUARD	84	#ifndef CORO_STACKGUARD
80	# define STACKGUARD 0	85	# define CORO_STACKGUARD 0
81	#endif	86	#endif
82		87
83	/* prefer perl internal functions over our own? */	88	/* prefer perl internal functions over our own? */
84	#ifndef PREFER_PERL_FUNCTIONS	89	#ifndef CORO_PREFER_PERL_FUNCTIONS
85	# define PREFER_PERL_FUNCTIONS 0	90	# define CORO_PREFER_PERL_FUNCTIONS 0
86	#endif	91	#endif
87		92
88	/* The next macro should declare a variable stacklevel that contains and approximation	93	/* The next macros try to return the current stack pointer, in an as
89	* to the current C stack pointer. Its property is that it changes with each call	94	* portable way as possible. */
90	* and should be unique. */
91	#define dSTACKLEVEL int stacklevel	95	#define dSTACKLEVEL volatile char stacklevel
92	#define STACKLEVEL ((void *)&stacklevel)	96	#define STACKLEVEL ((void *)&stacklevel)
93		97
94	#define IN_DESTRUCT (PL_main_cv == Nullcv)	98	#define IN_DESTRUCT (PL_main_cv == Nullcv)
95		99
96	#if __GNUC__ >= 3	100	#if __GNUC__ >= 3
…		…
121	I32 laststype;	125	I32 laststype;
122	int laststatval;	126	int laststatval;
123	Stat_t statcache;	127	Stat_t statcache;
124	};	128	};
125		129
		130	static size_t coro_stacksize = CORO_STACKSIZE;
126	static struct CoroAPI coroapi;	131	static struct CoroAPI coroapi;
127	static AV main_mainstack; / used to differentiate between $main and others */	132	static AV main_mainstack; / used to differentiate between $main and others */
		133	static JMPENV *main_top_env;
128	static HV coro_state_stash, coro_stash;	134	static HV coro_state_stash, coro_stash;
129	static SV coro_mortal; / will be freed after next transfer */	135	static SV coro_mortal; / will be freed after next transfer */
		136
		137	/* async_pool helper stuff */
		138	static SV *sv_pool_rss;
		139	static SV *sv_pool_size;
		140	static AV *av_async_pool;
130		141
131	static struct coro_cctx *cctx_first;	142	static struct coro_cctx *cctx_first;
132	static int cctx_count, cctx_idle;	143	static int cctx_count, cctx_idle;
133		144
134	/* this is a structure representing a c-level coroutine */	145	/* this is a structure representing a c-level coroutine */
135	typedef struct coro_cctx {	146	typedef struct coro_cctx {
136	struct coro_cctx *next;	147	struct coro_cctx *next;
137		148
138	/* the stack */	149	/* the stack */
139	void *sptr;	150	void *sptr;
140	long ssize; /* positive == mmap, otherwise malloc */	151	size_t ssize;
141		152
142	/* cpu state */	153	/* cpu state */
143	void idle_sp; / sp of top-level transfer/schedule/cede call */	154	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 */	155	JMPENV idle_te; / same as idle_sp, but for top_env, TODO: remove once stable */
145	JMPENV *top_env;	156	JMPENV *top_env;
146	coro_context cctx;	157	coro_context cctx;
147		158
148	int inuse;
149
150	#if USE_VALGRIND	159	#if CORO_USE_VALGRIND
151	int valgrind_id;	160	int valgrind_id;
152	#endif	161	#endif
		162	char inuse, mapped;
153	} coro_cctx;	163	} coro_cctx;
154		164
155	enum {	165	enum {
156	CF_RUNNING = 0x0001, /* coroutine is running */	166	CF_RUNNING = 0x0001, /* coroutine is running */
157	CF_READY = 0x0002, /* coroutine is ready */	167	CF_READY = 0x0002, /* coroutine is ready */
…		…
172		182
173	/* optionally saved, might be zero */	183	/* optionally saved, might be zero */
174	AV defav; / @_ */	184	AV defav; / @_ */
175	SV defsv; / $_ */	185	SV defsv; / $_ */
176	SV errsv; / $@ */	186	SV errsv; / $@ */
		187	GV deffh; / default filehandle */
177	SV irssv; / $/ */	188	SV irssv; / $/ */
178	SV irssv_sv; / real $/ cache */	189	SV irssv_sv; / real $/ cache */
179		190
180	#define VAR(name,type) type name;	191	#define VAR(name,type) type name;
181	# include "state.h"	192	# include "state.h"
182	#undef VAR	193	#undef VAR
183		194
184	/* coro process data */	195	/* coro process data */
185	int prio;	196	int prio;
		197
		198	/* linked list */
		199	struct coro next, prev;
		200	HV hv; / the perl hash associated with this coro, if any */
186	};	201	};
187		202
188	typedef struct coro *Coro__State;	203	typedef struct coro *Coro__State;
189	typedef struct coro *Coro__State_or_hashref;	204	typedef struct coro *Coro__State_or_hashref;
190		205
		206	/ Coro ******************************************************************/
		207
		208	#define PRIO_MAX 3
		209	#define PRIO_HIGH 1
		210	#define PRIO_NORMAL 0
		211	#define PRIO_LOW -1
		212	#define PRIO_IDLE -3
		213	#define PRIO_MIN -4
		214
		215	/* for Coro.pm */
		216	static SV *coro_current;
		217	static AV *coro_ready [PRIO_MAX-PRIO_MIN+1];
		218	static int coro_nready;
		219	static struct coro *coro_first;
		220
		221	/ lowlevel stuff ********************************************************/
		222
191	static AV *	223	static AV *
192	coro_clone_padlist (CV *cv)	224	coro_clone_padlist (pTHX_ CV *cv)
193	{	225	{
194	AV *padlist = CvPADLIST (cv);	226	AV *padlist = CvPADLIST (cv);
195	AV newpadlist, newpad;	227	AV newpadlist, newpad;
196		228
197	newpadlist = newAV ();	229	newpadlist = newAV ();
…		…
209		241
210	return newpadlist;	242	return newpadlist;
211	}	243	}
212		244
213	static void	245	static void
214	free_padlist (AV *padlist)	246	free_padlist (pTHX_ AV *padlist)
215	{	247	{
216	/* may be during global destruction */	248	/* may be during global destruction */
217	if (SvREFCNT (padlist))	249	if (SvREFCNT (padlist))
218	{	250	{
219	I32 i = AvFILLp (padlist);	251	I32 i = AvFILLp (padlist);
…		…
240	AV *padlist;	272	AV *padlist;
241	AV av = (AV )mg->mg_obj;	273	AV av = (AV )mg->mg_obj;
242		274
243	/* casting is fun. */	275	/* casting is fun. */
244	while (&PL_sv_undef != (SV )(padlist = (AV )av_pop (av)))	276	while (&PL_sv_undef != (SV )(padlist = (AV )av_pop (av)))
245	free_padlist (padlist);	277	free_padlist (aTHX_ padlist);
246		278
247	SvREFCNT_dec (av);	279	SvREFCNT_dec (av);
248		280
249	return 0;	281	return 0;
250	}	282	}
…		…
260	: mg_find ((SV *)cv, PERL_MAGIC_coro) \	292	: mg_find ((SV *)cv, PERL_MAGIC_coro) \
261	: 0	293	: 0
262		294
263	/* the next two functions merely cache the padlists */	295	/* the next two functions merely cache the padlists */
264	static void	296	static void
265	get_padlist (CV *cv)	297	get_padlist (pTHX_ CV *cv)
266	{	298	{
267	MAGIC *mg = CORO_MAGIC (cv);	299	MAGIC *mg = CORO_MAGIC (cv);
268	AV *av;	300	AV *av;
269		301
270	if (mg && AvFILLp ((av = (AV *)mg->mg_obj)) >= 0)	302	if (mg && AvFILLp ((av = (AV *)mg->mg_obj)) >= 0)
271	CvPADLIST (cv) = (AV *)AvARRAY (av)[AvFILLp (av)--];	303	CvPADLIST (cv) = (AV *)AvARRAY (av)[AvFILLp (av)--];
272	else	304	else
273	{	305	{
274	#if PREFER_PERL_FUNCTIONS	306	#if CORO_PREFER_PERL_FUNCTIONS
275	/* this is probably cleaner, but also slower? */	307	/* this is probably cleaner, but also slower? */
276	CV *cp = Perl_cv_clone (cv);	308	CV *cp = Perl_cv_clone (cv);
277	CvPADLIST (cv) = CvPADLIST (cp);	309	CvPADLIST (cv) = CvPADLIST (cp);
278	CvPADLIST (cp) = 0;	310	CvPADLIST (cp) = 0;
279	SvREFCNT_dec (cp);	311	SvREFCNT_dec (cp);
280	#else	312	#else
281	CvPADLIST (cv) = coro_clone_padlist (cv);	313	CvPADLIST (cv) = coro_clone_padlist (aTHX_ cv);
282	#endif	314	#endif
283	}	315	}
284	}	316	}
285		317
286	static void	318	static void
287	put_padlist (CV *cv)	319	put_padlist (pTHX_ CV *cv)
288	{	320	{
289	MAGIC *mg = CORO_MAGIC (cv);	321	MAGIC *mg = CORO_MAGIC (cv);
290	AV *av;	322	AV *av;
291		323
292	if (!mg)	324	if (!mg)
…		…
303	av_extend (av, AvMAX (av) + 1);	335	av_extend (av, AvMAX (av) + 1);
304		336
305	AvARRAY (av)[++AvFILLp (av)] = (SV *)CvPADLIST (cv);	337	AvARRAY (av)[++AvFILLp (av)] = (SV *)CvPADLIST (cv);
306	}	338	}
307		339
		340	/ load & save, init *****************************************************/
		341
308	#define SB do {	342	#define SB do {
309	#define SE } while (0)	343	#define SE } while (0)
310		344
311	#define REPLACE_SV(sv,val) SB SvREFCNT_dec (sv); (sv) = (val); (val) = 0; SE	345	#define REPLACE_SV(sv,val) SB SvREFCNT_dec (sv); (sv) = (val); (val) = 0; SE
312		346
313	static void	347	static void
314	load_perl (Coro__State c)	348	load_perl (pTHX_ Coro__State c)
315	{	349	{
316	#define VAR(name,type) PL_ ## name = c->name;	350	#define VAR(name,type) PL_ ## name = c->name;
317	# include "state.h"	351	# include "state.h"
318	#undef VAR	352	#undef VAR
319		353
320	if (c->defav) REPLACE_SV (GvAV (PL_defgv), c->defav);	354	if (c->defav) REPLACE_SV (GvAV (PL_defgv), c->defav);
321	if (c->defsv) REPLACE_SV (DEFSV , c->defsv);	355	if (c->defsv) REPLACE_SV (DEFSV , c->defsv);
322	if (c->errsv) REPLACE_SV (ERRSV , c->errsv);	356	if (c->errsv) REPLACE_SV (ERRSV , c->errsv);
		357	if (c->deffh) REPLACE_SV (PL_defoutgv , c->deffh);
		358
323	if (c->irssv)	359	if (c->irssv)
324	{	360	{
325	if (c->irssv == PL_rs \|\| sv_eq (PL_rs, c->irssv))	361	if (c->irssv == PL_rs \|\| sv_eq (PL_rs, c->irssv))
		362	{
326	SvREFCNT_dec (c->irssv);	363	SvREFCNT_dec (c->irssv);
		364	c->irssv = 0;
		365	}
327	else	366	else
328	{	367	{
329	REPLACE_SV (PL_rs, c->irssv);	368	REPLACE_SV (PL_rs, c->irssv);
330	if (!c->irssv_sv) c->irssv_sv = get_sv ("/", 0);	369	if (!c->irssv_sv) c->irssv_sv = get_sv ("/", 0);
331	sv_setsv (c->irssv_sv, PL_rs);	370	sv_setsv (c->irssv_sv, PL_rs);
…		…
337	CV *cv;	376	CV *cv;
338		377
339	/* now do the ugly restore mess */	378	/* now do the ugly restore mess */
340	while ((cv = (CV *)POPs))	379	while ((cv = (CV *)POPs))
341	{	380	{
342	put_padlist (cv); /* mark this padlist as available */	381	put_padlist (aTHX_ cv); /* mark this padlist as available */
343	CvDEPTH (cv) = PTR2IV (POPs);	382	CvDEPTH (cv) = PTR2IV (POPs);
344	CvPADLIST (cv) = (AV *)POPs;	383	CvPADLIST (cv) = (AV *)POPs;
345	}	384	}
346		385
347	PUTBACK;	386	PUTBACK;
348	}	387	}
349	}	388	}
350		389
351	static void	390	static void
352	save_perl (Coro__State c)	391	save_perl (pTHX_ Coro__State c)
353	{	392	{
354	{	393	{
355	dSP;	394	dSP;
356	I32 cxix = cxstack_ix;	395	I32 cxix = cxstack_ix;
357	PERL_CONTEXT *ccstk = cxstack;	396	PERL_CONTEXT *ccstk = cxstack;
…		…
360	/*	399	/*
361	* the worst thing you can imagine happens first - we have to save	400	* the worst thing you can imagine happens first - we have to save
362	* (and reinitialize) all cv's in the whole callchain :(	401	* (and reinitialize) all cv's in the whole callchain :(
363	*/	402	*/
364		403
365	EXTEND (SP, 3 + 1);
366	PUSHs (Nullsv);	404	XPUSHs (Nullsv);
367	/* this loop was inspired by pp_caller */	405	/* this loop was inspired by pp_caller */
368	for (;;)	406	for (;;)
369	{	407	{
370	while (cxix >= 0)	408	while (cxix >= 0)
371	{	409	{
372	PERL_CONTEXT *cx = &ccstk[cxix--];	410	PERL_CONTEXT *cx = &ccstk[cxix--];
373		411
374	if (CxTYPE (cx) == CXt_SUB)	412	if (CxTYPE (cx) == CXt_SUB \|\| CxTYPE (cx) == CXt_FORMAT)
375	{	413	{
376	CV *cv = cx->blk_sub.cv;	414	CV *cv = cx->blk_sub.cv;
377		415
378	if (CvDEPTH (cv))	416	if (CvDEPTH (cv))
379	{	417	{
…		…
381	PUSHs ((SV *)CvPADLIST (cv));	419	PUSHs ((SV *)CvPADLIST (cv));
382	PUSHs (INT2PTR (SV *, CvDEPTH (cv)));	420	PUSHs (INT2PTR (SV *, CvDEPTH (cv)));
383	PUSHs ((SV *)cv);	421	PUSHs ((SV *)cv);
384		422
385	CvDEPTH (cv) = 0;	423	CvDEPTH (cv) = 0;
386	get_padlist (cv);	424	get_padlist (aTHX_ cv);
387	}	425	}
388	}	426	}
389	}	427	}
390		428
391	if (top_si->si_type == PERLSI_MAIN)	429	if (top_si->si_type == PERLSI_MAIN)
392	break;	430	break;
393		431
394	top_si = top_si->si_prev;	432	top_si = top_si->si_prev;
395	ccstk = top_si->si_cxstack;	433	ccstk = top_si->si_cxstack;
396	cxix = top_si->si_cxix;	434	cxix = top_si->si_cxix;
397	}	435	}
398		436
399	PUTBACK;	437	PUTBACK;
400	}	438	}
401		439
402	c->defav = c->save & CORO_SAVE_DEFAV ? (AV *)SvREFCNT_inc (GvAV (PL_defgv)) : 0;	440	c->defav = c->save & CORO_SAVE_DEFAV ? (AV *)SvREFCNT_inc (GvAV (PL_defgv)) : 0;
403	c->defsv = c->save & CORO_SAVE_DEFSV ? SvREFCNT_inc (DEFSV) : 0;	441	c->defsv = c->save & CORO_SAVE_DEFSV ? SvREFCNT_inc (DEFSV) : 0;
404	c->errsv = c->save & CORO_SAVE_ERRSV ? SvREFCNT_inc (ERRSV) : 0;	442	c->errsv = c->save & CORO_SAVE_ERRSV ? SvREFCNT_inc (ERRSV) : 0;
		443	c->deffh = c->save & CORO_SAVE_DEFFH ? (GV *)SvREFCNT_inc (PL_defoutgv) : 0;
405	c->irssv = c->save & CORO_SAVE_IRSSV ? SvREFCNT_inc (PL_rs) : 0;	444	c->irssv = c->save & CORO_SAVE_IRSSV ? SvREFCNT_inc (PL_rs) : 0;
406		445
407	#define VAR(name,type)c->name = PL_ ## name;	446	#define VAR(name,type)c->name = PL_ ## name;
408	# include "state.h"	447	# include "state.h"
409	#undef VAR	448	#undef VAR
…		…
413	* allocate various perl stacks. This is an exact copy	452	* allocate various perl stacks. This is an exact copy
414	* of perl.c:init_stacks, except that it uses less memory	453	* of perl.c:init_stacks, except that it uses less memory
415	* on the (sometimes correct) assumption that coroutines do	454	* on the (sometimes correct) assumption that coroutines do
416	* not usually need a lot of stackspace.	455	* not usually need a lot of stackspace.
417	*/	456	*/
418	#if PREFER_PERL_FUNCTIONS	457	#if CORO_PREFER_PERL_FUNCTIONS
419	# define coro_init_stacks init_stacks	458	# define coro_init_stacks init_stacks
420	#else	459	#else
421	static void	460	static void
422	coro_init_stacks ()	461	coro_init_stacks (pTHX)
423	{	462	{
424	PL_curstackinfo = new_stackinfo(128, 1024/sizeof(PERL_CONTEXT));	463	PL_curstackinfo = new_stackinfo(64, 6);
425	PL_curstackinfo->si_type = PERLSI_MAIN;	464	PL_curstackinfo->si_type = PERLSI_MAIN;
426	PL_curstack = PL_curstackinfo->si_stack;	465	PL_curstack = PL_curstackinfo->si_stack;
427	PL_mainstack = PL_curstack; /* remember in case we switch stacks */	466	PL_mainstack = PL_curstack; /* remember in case we switch stacks */
428		467
429	PL_stack_base = AvARRAY(PL_curstack);	468	PL_stack_base = AvARRAY(PL_curstack);
430	PL_stack_sp = PL_stack_base;	469	PL_stack_sp = PL_stack_base;
431	PL_stack_max = PL_stack_base + AvMAX(PL_curstack);	470	PL_stack_max = PL_stack_base + AvMAX(PL_curstack);
432		471
433	New(50,PL_tmps_stack,128,SV*);	472	New(50,PL_tmps_stack,64,SV*);
434	PL_tmps_floor = -1;	473	PL_tmps_floor = -1;
435	PL_tmps_ix = -1;	474	PL_tmps_ix = -1;
436	PL_tmps_max = 128;	475	PL_tmps_max = 64;
437		476
438	New(54,PL_markstack,32,I32);	477	New(54,PL_markstack,16,I32);
439	PL_markstack_ptr = PL_markstack;	478	PL_markstack_ptr = PL_markstack;
440	PL_markstack_max = PL_markstack + 32;	479	PL_markstack_max = PL_markstack + 16;
441		480
442	#ifdef SET_MARK_OFFSET	481	#ifdef SET_MARK_OFFSET
443	SET_MARK_OFFSET;	482	SET_MARK_OFFSET;
444	#endif	483	#endif
445		484
446	New(54,PL_scopestack,32,I32);	485	New(54,PL_scopestack,16,I32);
447	PL_scopestack_ix = 0;	486	PL_scopestack_ix = 0;
448	PL_scopestack_max = 32;	487	PL_scopestack_max = 16;
449		488
450	New(54,PL_savestack,64,ANY);	489	New(54,PL_savestack,64,ANY);
451	PL_savestack_ix = 0;	490	PL_savestack_ix = 0;
452	PL_savestack_max = 64;	491	PL_savestack_max = 64;
453		492
454	#if !PERL_VERSION_ATLEAST (5,9,0)	493	#if !PERL_VERSION_ATLEAST (5,9,0)
455	New(54,PL_retstack,16,OP*);	494	New(54,PL_retstack,4,OP*);
456	PL_retstack_ix = 0;	495	PL_retstack_ix = 0;
457	PL_retstack_max = 16;	496	PL_retstack_max = 4;
458	#endif	497	#endif
459	}	498	}
460	#endif	499	#endif
461		500
462	/*	501	/*
463	* destroy the stacks, the callchain etc...	502	* destroy the stacks, the callchain etc...
464	*/	503	*/
465	static void	504	static void
466	coro_destroy_stacks ()	505	coro_destroy_stacks (pTHX)
467	{	506	{
468	if (!IN_DESTRUCT)	507	if (!IN_DESTRUCT)
469	{	508	{
470	/* restore all saved variables and stuff */	509	/* restore all saved variables and stuff */
471	LEAVE_SCOPE (0);	510	LEAVE_SCOPE (0);
…		…
504	#if !PERL_VERSION_ATLEAST (5,9,0)	543	#if !PERL_VERSION_ATLEAST (5,9,0)
505	Safefree (PL_retstack);	544	Safefree (PL_retstack);
506	#endif	545	#endif
507	}	546	}
508		547
		548	static size_t
		549	coro_rss (struct coro *coro)
		550	{
		551	size_t rss = sizeof (coro);
		552
		553	if (coro->mainstack)
		554	{
		555	if (coro->flags & CF_RUNNING)
		556	{
		557	#define VAR(name,type)coro->name = PL_ ## name;
		558	# include "state.h"
		559	#undef VAR
		560	}
		561
		562	rss += sizeof (coro->curstackinfo);
		563	rss += sizeof (struct xpvav) + (1 + AvFILL (coro->curstackinfo->si_stack)) * sizeof (SV *);
		564	rss += (coro->curstackinfo->si_cxmax + 1) * sizeof (PERL_CONTEXT);
		565	rss += sizeof (struct xpvav) + (1 + AvFILL (coro->curstack)) * sizeof (SV *);
		566	rss += coro->tmps_max * sizeof (SV *);
		567	rss += (coro->markstack_max - coro->markstack_ptr) * sizeof (I32);
		568	rss += coro->scopestack_max * sizeof (I32);
		569	rss += coro->savestack_max * sizeof (ANY);
		570
		571	#if !PERL_VERSION_ATLEAST (5,9,0)
		572	rss += coro->retstack_max * sizeof (OP *);
		573	#endif
		574	}
		575
		576	return rss;
		577	}
		578
		579	/ coroutine stack handling **********************************************/
		580
509	static void	581	static void
510	setup_coro (struct coro *coro)	582	setup_coro (pTHX_ struct coro *coro)
511	{	583	{
512	/*	584	/*
513	* emulate part of the perl startup here.	585	* emulate part of the perl startup here.
514	*/	586	*/
515
516	coro_init_stacks ();	587	coro_init_stacks (aTHX);
517		588
518	PL_curcop = &PL_compiling;	589	PL_curcop = &PL_compiling;
519	PL_in_eval = EVAL_NULL;	590	PL_in_eval = EVAL_NULL;
		591	PL_comppad = 0;
520	PL_curpm = 0;	592	PL_curpm = 0;
521	PL_localizing = 0;	593	PL_localizing = 0;
522	PL_dirty = 0;	594	PL_dirty = 0;
523	PL_restartop = 0;	595	PL_restartop = 0;
524		596
…		…
532	Zero (&myop, 1, LOGOP);	604	Zero (&myop, 1, LOGOP);
533	myop.op_next = Nullop;	605	myop.op_next = Nullop;
534	myop.op_flags = OPf_WANT_VOID;	606	myop.op_flags = OPf_WANT_VOID;
535		607
536	PUSHMARK (SP);	608	PUSHMARK (SP);
537	XPUSHs ((SV *)get_cv ("Coro::State::_coro_init", FALSE));	609	XPUSHs (av_shift (GvAV (PL_defgv)));
538	PUTBACK;	610	PUTBACK;
539	PL_op = (OP *)&myop;	611	PL_op = (OP *)&myop;
540	PL_op = PL_ppaddr[OP_ENTERSUB](aTHX);	612	PL_op = PL_ppaddr[OP_ENTERSUB](aTHX);
541	SPAGAIN;	613	SPAGAIN;
542	}	614	}
543		615
544	ENTER; /* necessary e.g. for dounwind */	616	ENTER; /* necessary e.g. for dounwind */
545	}	617	}
546		618
547	static void	619	static void
548	free_coro_mortal ()	620	free_coro_mortal (pTHX)
549	{	621	{
550	if (coro_mortal)	622	if (coro_mortal)
551	{	623	{
552	SvREFCNT_dec (coro_mortal);	624	SvREFCNT_dec (coro_mortal);
553	coro_mortal = 0;	625	coro_mortal = 0;
554	}	626	}
555	}	627	}
556		628
557	/* inject a fake call to Coro::State::_cctx_init into the execution */	629	/* inject a fake call to Coro::State::_cctx_init into the execution */
		630	/* _cctx_init should be careful, as it could be called at almost any time */
		631	/* during execution of a perl program */
558	static void NOINLINE	632	static void NOINLINE
559	prepare_cctx (coro_cctx *cctx)	633	prepare_cctx (pTHX_ coro_cctx *cctx)
560	{	634	{
561	dSP;	635	dSP;
562	LOGOP myop;	636	LOGOP myop;
563		637
564	Zero (&myop, 1, LOGOP);	638	Zero (&myop, 1, LOGOP);
…		…
573	PL_op = (OP *)&myop;	647	PL_op = (OP *)&myop;
574	PL_op = PL_ppaddr[OP_ENTERSUB](aTHX);	648	PL_op = PL_ppaddr[OP_ENTERSUB](aTHX);
575	SPAGAIN;	649	SPAGAIN;
576	}	650	}
577		651
		652	/*
		653	* this is a _very_ stripped down perl interpreter ;)
		654	*/
578	static void	655	static void
579	coro_run (void *arg)	656	coro_run (void *arg)
580	{	657	{
		658	dTHX;
		659
581	/* coro_run is the alternative tail of transfer(), so unlock here. */	660	/* coro_run is the alternative tail of transfer(), so unlock here. */
582	UNLOCK;	661	UNLOCK;
583		662
584	/*
585	* this is a _very_ stripped down perl interpreter ;)
586	*/
587	PL_top_env = &PL_start_env;	663	PL_top_env = &PL_start_env;
588		664
589	/* inject call to cctx_init */	665	/* inject a fake subroutine call to cctx_init */
590	prepare_cctx ((coro_cctx *)arg);	666	prepare_cctx (aTHX_ (coro_cctx *)arg);
591		667
592	/* somebody will hit me for both perl_run and PL_restartop */	668	/* somebody or something will hit me for both perl_run and PL_restartop */
593	PL_restartop = PL_op;	669	PL_restartop = PL_op;
594	perl_run (PL_curinterp);	670	perl_run (PL_curinterp);
595		671
596	fputs ("FATAL: C coroutine fell over the edge of the world, aborting. Did you call exit in a coroutine?\n", stderr);	672	/*
597	abort ();	673	* If perl-run returns we assume exit() was being called or the coro
		674	* fell off the end, which seems to be the only valid (non-bug)
		675	* reason for perl_run to return. We try to exit by jumping to the
		676	* bootstrap-time "top" top_env, as we cannot restore the "main"
		677	* coroutine as Coro has no such concept
		678	*/
		679	PL_top_env = main_top_env;
		680	JMPENV_JUMP (2); /* I do not feel well about the hardcoded 2 at all */
598	}	681	}
599		682
600	static coro_cctx *	683	static coro_cctx *
601	cctx_new ()	684	cctx_new ()
602	{	685	{
603	coro_cctx *cctx;	686	coro_cctx *cctx;
		687	void *stack_start;
		688	size_t stack_size;
604		689
605	++cctx_count;	690	++cctx_count;
606		691
607	Newz (0, cctx, 1, coro_cctx);	692	Newz (0, cctx, 1, coro_cctx);
608		693
609	#if HAVE_MMAP	694	#if HAVE_MMAP
610		695
611	cctx->ssize = ((STACKSIZE * sizeof (long) + PAGESIZE - 1) / PAGESIZE + STACKGUARD) * PAGESIZE;	696	cctx->ssize = ((coro_stacksize * sizeof (long) + PAGESIZE - 1) / PAGESIZE + CORO_STACKGUARD) * PAGESIZE;
612	/* mmap supposedly does allocate-on-write for us */	697	/* mmap supposedly does allocate-on-write for us */
613	cctx->sptr = mmap (0, cctx->ssize, PROT_EXEC\|PROT_READ\|PROT_WRITE, MAP_PRIVATE\|MAP_ANONYMOUS, 0, 0);	698	cctx->sptr = mmap (0, cctx->ssize, PROT_EXEC\|PROT_READ\|PROT_WRITE, MAP_PRIVATE\|MAP_ANONYMOUS, 0, 0);
614		699
615	if (cctx->sptr == (void *)-1)	700	if (cctx->sptr != (void *)-1)
616	{
617	perror ("FATAL: unable to mmap stack for coroutine");
618	_exit (EXIT_FAILURE);
619	}	701	{
620
621	# if STACKGUARD	702	# if CORO_STACKGUARD
622	mprotect (cctx->sptr, STACKGUARD * PAGESIZE, PROT_NONE);	703	mprotect (cctx->sptr, CORO_STACKGUARD * PAGESIZE, PROT_NONE);
623	# endif	704	# endif
		705	stack_start = CORO_STACKGUARD * PAGESIZE + (char *)cctx->sptr;
		706	stack_size = cctx->ssize - CORO_STACKGUARD * PAGESIZE;
		707	cctx->mapped = 1;
		708	}
		709	else
		710	#endif
		711	{
		712	cctx->ssize = coro_stacksize * (long)sizeof (long);
		713	New (0, cctx->sptr, coro_stacksize, long);
624		714
625	#else
626
627	cctx->ssize = STACKSIZE * (long)sizeof (long);
628	New (0, cctx->sptr, STACKSIZE, long);
629
630	if (!cctx->sptr)	715	if (!cctx->sptr)
631	{	716	{
632	perror ("FATAL: unable to malloc stack for coroutine");	717	perror ("FATAL: unable to allocate stack for coroutine");
633	_exit (EXIT_FAILURE);	718	_exit (EXIT_FAILURE);
634	}	719	}
635		720
636	#endif	721	stack_start = cctx->sptr;
		722	stack_size = cctx->ssize;
		723	}
637		724
638	#if USE_VALGRIND	725	REGISTER_STACK (cctx, (char )stack_start, (char )stack_start + stack_size);
639	cctx->valgrind_id = VALGRIND_STACK_REGISTER (
640	STACKGUARD * PAGESIZE + (char *)cctx->sptr,
641	cctx->ssize + (char *)cctx->sptr
642	);
643	#endif
644
645	coro_create (&cctx->cctx, coro_run, (void *)cctx, cctx->sptr, cctx->ssize);	726	coro_create (&cctx->cctx, coro_run, (void *)cctx, stack_start, stack_size);
646		727
647	return cctx;	728	return cctx;
648	}	729	}
649		730
650	static void	731	static void
…		…
653	if (!cctx)	734	if (!cctx)
654	return;	735	return;
655		736
656	--cctx_count;	737	--cctx_count;
657		738
658	#if USE_VALGRIND	739	#if CORO_USE_VALGRIND
659	VALGRIND_STACK_DEREGISTER (cctx->valgrind_id);	740	VALGRIND_STACK_DEREGISTER (cctx->valgrind_id);
660	#endif	741	#endif
661		742
662	#if HAVE_MMAP	743	#if HAVE_MMAP
		744	if (cctx->mapped)
663	munmap (cctx->sptr, cctx->ssize);	745	munmap (cctx->sptr, cctx->ssize);
664	#else	746	else
		747	#endif
665	Safefree (cctx->sptr);	748	Safefree (cctx->sptr);
666	#endif
667		749
668	Safefree (cctx);	750	Safefree (cctx);
669	}	751	}
670		752
671	static coro_cctx *	753	static coro_cctx *
672	cctx_get ()	754	cctx_get (pTHX)
673	{	755	{
674	coro_cctx *cctx;
675
676	if (cctx_first)	756	while (cctx_first)
677	{	757	{
678	cctx = cctx_first;	758	coro_cctx *cctx = cctx_first;
679	cctx_first = cctx->next;	759	cctx_first = cctx->next;
680	--cctx_idle;	760	--cctx_idle;
		761
		762	if (cctx->ssize >= coro_stacksize)
		763	return cctx;
		764
		765	cctx_destroy (cctx);
681	}	766	}
682	else	767
683	{
684	cctx = cctx_new ();
685	PL_op = PL_op->op_next;	768	PL_op = PL_op->op_next;
686	}
687
688	return cctx;	769	return cctx_new ();
689	}	770	}
690		771
691	static void	772	static void
692	cctx_put (coro_cctx *cctx)	773	cctx_put (coro_cctx *cctx)
693	{	774	{
…		…
705	++cctx_idle;	786	++cctx_idle;
706	cctx->next = cctx_first;	787	cctx->next = cctx_first;
707	cctx_first = cctx;	788	cctx_first = cctx;
708	}	789	}
709		790
		791	/ coroutine switching ***************************************************/
		792
710	/* never call directly, always through the coro_state_transfer global variable */	793	/* never call directly, always through the coro_state_transfer global variable */
711	static void NOINLINE	794	static void NOINLINE
712	transfer (struct coro prev, struct coro next)	795	transfer (pTHX_ struct coro prev, struct coro next)
713	{	796	{
714	dSTACKLEVEL;	797	dSTACKLEVEL;
715		798
716	/* sometimes transfer is only called to set idle_sp */	799	/* sometimes transfer is only called to set idle_sp */
717	if (!next)	800	if (!next)
…		…
750	if (next->flags & CF_NEW)	833	if (next->flags & CF_NEW)
751	{	834	{
752	/* need to start coroutine */	835	/* need to start coroutine */
753	next->flags &= ~CF_NEW;	836	next->flags &= ~CF_NEW;
754	/* first get rid of the old state */	837	/* first get rid of the old state */
755	save_perl (prev);	838	save_perl (aTHX_ prev);
756	/* setup coroutine call */	839	/* setup coroutine call */
757	setup_coro (next);	840	setup_coro (aTHX_ next);
758	/* need a new stack */	841	/* need a new stack */
759	assert (!next->cctx);	842	assert (!next->cctx);
760	}	843	}
761	else	844	else
762	{	845	{
763	/* coroutine already started */	846	/* coroutine already started */
764	save_perl (prev);	847	save_perl (aTHX_ prev);
765	load_perl (next);	848	load_perl (aTHX_ next);
766	}	849	}
767		850
768	prev__cctx = prev->cctx;	851	prev__cctx = prev->cctx;
769		852
770	/* possibly "free" the cctx */	853	/* possibly "free" the cctx */
…		…
779	prev__cctx->inuse = 0;	862	prev__cctx->inuse = 0;
780	}	863	}
781		864
782	if (!next->cctx)	865	if (!next->cctx)
783	{	866	{
784	next->cctx = cctx_get ();	867	next->cctx = cctx_get (aTHX);
785	assert (!next->cctx->inuse);	868	assert (!next->cctx->inuse);
786	next->cctx->inuse = 1;	869	next->cctx->inuse = 1;
787	}	870	}
788		871
789	if (prev__cctx != next->cctx)	872	if (prev__cctx != next->cctx)
…		…
791	prev__cctx->top_env = PL_top_env;	874	prev__cctx->top_env = PL_top_env;
792	PL_top_env = next->cctx->top_env;	875	PL_top_env = next->cctx->top_env;
793	coro_transfer (&prev__cctx->cctx, &next->cctx->cctx);	876	coro_transfer (&prev__cctx->cctx, &next->cctx->cctx);
794	}	877	}
795		878
796	free_coro_mortal ();	879	free_coro_mortal (aTHX);
797	UNLOCK;	880	UNLOCK;
798	}	881	}
799	}	882	}
800		883
801	struct transfer_args	884	struct transfer_args
802	{	885	{
803	struct coro prev, next;	886	struct coro prev, next;
804	};	887	};
805		888
806	#define TRANSFER(ta) transfer ((ta).prev, (ta).next)	889	#define TRANSFER(ta) transfer (aTHX_ (ta).prev, (ta).next)
		890
		891	/ high level stuff ******************************************************/
807		892
808	static int	893	static int
809	coro_state_destroy (struct coro *coro)	894	coro_state_destroy (pTHX_ struct coro *coro)
810	{	895	{
811	if (coro->flags & CF_DESTROYED)	896	if (coro->flags & CF_DESTROYED)
812	return 0;	897	return 0;
813		898
814	coro->flags \|= CF_DESTROYED;	899	coro->flags \|= CF_DESTROYED;
		900
		901	if (coro->flags & CF_READY)
		902	{
		903	/* reduce nready, as destroying a ready coro effectively unreadies it */
		904	/* alternative: look through all ready queues and remove the coro */
		905	LOCK;
		906	--coro_nready;
		907	UNLOCK;
		908	}
		909	else
		910	coro->flags \|= CF_READY; /* make sure it is NOT put into the readyqueue */
815		911
816	if (coro->mainstack && coro->mainstack != main_mainstack)	912	if (coro->mainstack && coro->mainstack != main_mainstack)
817	{	913	{
		914	struct coro temp;
		915
818	assert (!(coro->flags & CF_RUNNING));	916	assert (!(coro->flags & CF_RUNNING));
819		917
820	struct coro temp;
821	Zero (&temp, 1, struct coro);	918	Zero (&temp, 1, struct coro);
822	temp.save = CORO_SAVE_ALL;	919	temp.save = CORO_SAVE_ALL;
823		920
824	if (coro->flags & CF_RUNNING)	921	if (coro->flags & CF_RUNNING)
825	croak ("FATAL: tried to destroy currently running coroutine");	922	croak ("FATAL: tried to destroy currently running coroutine");
826		923
827	save_perl (&temp);	924	save_perl (aTHX_ &temp);
828	load_perl (coro);	925	load_perl (aTHX_ coro);
829		926
830	coro_destroy_stacks ();	927	coro_destroy_stacks (aTHX);
831		928
832	load_perl (&temp); /* this will get rid of defsv etc.. */	929	load_perl (aTHX_ &temp); /* this will get rid of defsv etc.. */
833		930
834	coro->mainstack = 0;	931	coro->mainstack = 0;
835	}	932	}
836		933
837	cctx_destroy (coro->cctx);	934	cctx_destroy (coro->cctx);
838	SvREFCNT_dec (coro->args);	935	SvREFCNT_dec (coro->args);
839		936
		937	if (coro->next) coro->next->prev = coro->prev;
		938	if (coro->prev) coro->prev->next = coro->next;
		939	if (coro == coro_first) coro_first = coro->next;
		940
840	return 1;	941	return 1;
841	}	942	}
842		943
843	static int	944	static int
844	coro_state_free (pTHX_ SV sv, MAGIC mg)	945	coro_state_free (pTHX_ SV sv, MAGIC mg)
845	{	946	{
846	struct coro coro = (struct coro )mg->mg_ptr;	947	struct coro coro = (struct coro )mg->mg_ptr;
847	mg->mg_ptr = 0;	948	mg->mg_ptr = 0;
848		949
		950	coro->hv = 0;
		951
849	if (--coro->refcnt < 0)	952	if (--coro->refcnt < 0)
850	{	953	{
851	coro_state_destroy (coro);	954	coro_state_destroy (aTHX_ coro);
852	Safefree (coro);	955	Safefree (coro);
853	}	956	}
854		957
855	return 0;	958	return 0;
856	}	959	}
…		…
875	# define MGf_DUP 0	978	# define MGf_DUP 0
876	#endif	979	#endif
877	};	980	};
878		981
879	static struct coro *	982	static struct coro *
880	SvSTATE (SV *coro)	983	SvSTATE_ (pTHX_ SV *coro)
881	{	984	{
882	HV *stash;	985	HV *stash;
883	MAGIC *mg;	986	MAGIC *mg;
884		987
885	if (SvROK (coro))	988	if (SvROK (coro))
…		…
891	/* very slow, but rare, check */	994	/* very slow, but rare, check */
892	if (!sv_derived_from (sv_2mortal (newRV_inc (coro)), "Coro::State"))	995	if (!sv_derived_from (sv_2mortal (newRV_inc (coro)), "Coro::State"))
893	croak ("Coro::State object required");	996	croak ("Coro::State object required");
894	}	997	}
895		998
896	mg = SvMAGIC (coro);	999	mg = CORO_MAGIC (coro);
897	assert (mg->mg_type == PERL_MAGIC_ext);
898	return (struct coro *)mg->mg_ptr;	1000	return (struct coro *)mg->mg_ptr;
899	}	1001	}
900		1002
		1003	#define SvSTATE(sv) SvSTATE_ (aTHX_ (sv))
		1004
901	static void	1005	static void
902	prepare_transfer (struct transfer_args ta, SV prev_sv, SV *next_sv)	1006	prepare_transfer (pTHX_ struct transfer_args ta, SV prev_sv, SV *next_sv)
903	{	1007	{
904	ta->prev = SvSTATE (prev_sv);	1008	ta->prev = SvSTATE (prev_sv);
905	ta->next = SvSTATE (next_sv);	1009	ta->next = SvSTATE (next_sv);
906	}	1010	}
907		1011
908	static void	1012	static void
909	api_transfer (SV prev_sv, SV next_sv)	1013	api_transfer (SV prev_sv, SV next_sv)
910	{	1014	{
		1015	dTHX;
911	struct transfer_args ta;	1016	struct transfer_args ta;
912		1017
913	prepare_transfer (&ta, prev_sv, next_sv);	1018	prepare_transfer (aTHX_ &ta, prev_sv, next_sv);
914	TRANSFER (ta);	1019	TRANSFER (ta);
915	}	1020	}
916		1021
917	static int	1022	static int
918	api_save (SV *coro_sv, int new_save)	1023	api_save (SV *coro_sv, int new_save)
919	{	1024	{
		1025	dTHX;
920	struct coro *coro = SvSTATE (coro_sv);	1026	struct coro *coro = SvSTATE (coro_sv);
921	int old_save = coro->save;	1027	int old_save = coro->save;
922		1028
923	if (new_save >= 0)	1029	if (new_save >= 0)
924	coro->save = new_save;	1030	coro->save = new_save;
…		…
926	return old_save;	1032	return old_save;
927	}	1033	}
928		1034
929	/ Coro ******************************************************************/	1035	/ Coro ******************************************************************/
930		1036
931	#define PRIO_MAX 3
932	#define PRIO_HIGH 1
933	#define PRIO_NORMAL 0
934	#define PRIO_LOW -1
935	#define PRIO_IDLE -3
936	#define PRIO_MIN -4
937
938	/* for Coro.pm */
939	static SV *coro_current;
940	static AV *coro_ready [PRIO_MAX-PRIO_MIN+1];
941	static int coro_nready;
942
943	static void	1037	static void
944	coro_enq (SV *coro_sv)	1038	coro_enq (pTHX_ SV *coro_sv)
945	{	1039	{
946	av_push (coro_ready [SvSTATE (coro_sv)->prio - PRIO_MIN], coro_sv);	1040	av_push (coro_ready [SvSTATE (coro_sv)->prio - PRIO_MIN], coro_sv);
947	coro_nready++;
948	}	1041	}
949		1042
950	static SV *	1043	static SV *
951	coro_deq (int min_prio)	1044	coro_deq (pTHX_ int min_prio)
952	{	1045	{
953	int prio = PRIO_MAX - PRIO_MIN;	1046	int prio = PRIO_MAX - PRIO_MIN;
954		1047
955	min_prio -= PRIO_MIN;	1048	min_prio -= PRIO_MIN;
956	if (min_prio < 0)	1049	if (min_prio < 0)
957	min_prio = 0;	1050	min_prio = 0;
958		1051
959	for (prio = PRIO_MAX - PRIO_MIN + 1; --prio >= min_prio; )	1052	for (prio = PRIO_MAX - PRIO_MIN + 1; --prio >= min_prio; )
960	if (AvFILLp (coro_ready [prio]) >= 0)	1053	if (AvFILLp (coro_ready [prio]) >= 0)
961	{
962	coro_nready--;
963	return av_shift (coro_ready [prio]);	1054	return av_shift (coro_ready [prio]);
964	}
965		1055
966	return 0;	1056	return 0;
967	}	1057	}
968		1058
969	static int	1059	static int
970	api_ready (SV *coro_sv)	1060	api_ready (SV *coro_sv)
971	{	1061	{
		1062	dTHX;
972	struct coro *coro;	1063	struct coro *coro;
973		1064
974	if (SvROK (coro_sv))	1065	if (SvROK (coro_sv))
975	coro_sv = SvRV (coro_sv);	1066	coro_sv = SvRV (coro_sv);
976		1067
…		…
980	return 0;	1071	return 0;
981		1072
982	coro->flags \|= CF_READY;	1073	coro->flags \|= CF_READY;
983		1074
984	LOCK;	1075	LOCK;
985	coro_enq (SvREFCNT_inc (coro_sv));	1076	coro_enq (aTHX_ SvREFCNT_inc (coro_sv));
		1077	++coro_nready;
986	UNLOCK;	1078	UNLOCK;
987		1079
988	return 1;	1080	return 1;
989	}	1081	}
990		1082
991	static int	1083	static int
992	api_is_ready (SV *coro_sv)	1084	api_is_ready (SV *coro_sv)
993	{	1085	{
		1086	dTHX;
994	return !!(SvSTATE (coro_sv)->flags & CF_READY);	1087	return !!(SvSTATE (coro_sv)->flags & CF_READY);
995	}	1088	}
996		1089
997	static void	1090	static void
998	prepare_schedule (struct transfer_args *ta)	1091	prepare_schedule (pTHX_ struct transfer_args *ta)
999	{	1092	{
1000	SV prev_sv, next_sv;	1093	SV prev_sv, next_sv;
1001		1094
1002	for (;;)	1095	for (;;)
1003	{	1096	{
1004	LOCK;	1097	LOCK;
1005	next_sv = coro_deq (PRIO_MIN);	1098	next_sv = coro_deq (aTHX_ PRIO_MIN);
1006	UNLOCK;
1007		1099
1008	/* nothing to schedule: call the idle handler */	1100	/* nothing to schedule: call the idle handler */
1009	if (!next_sv)	1101	if (!next_sv)
1010	{	1102	{
1011	dSP;	1103	dSP;
		1104	UNLOCK;
1012		1105
1013	ENTER;	1106	ENTER;
1014	SAVETMPS;	1107	SAVETMPS;
1015		1108
1016	PUSHMARK (SP);	1109	PUSHMARK (SP);
…		…
1025	ta->next = SvSTATE (next_sv);	1118	ta->next = SvSTATE (next_sv);
1026		1119
1027	/* cannot transfer to destroyed coros, skip and look for next */	1120	/* cannot transfer to destroyed coros, skip and look for next */
1028	if (ta->next->flags & CF_DESTROYED)	1121	if (ta->next->flags & CF_DESTROYED)
1029	{	1122	{
		1123	UNLOCK;
1030	SvREFCNT_dec (next_sv);	1124	SvREFCNT_dec (next_sv);
		1125	/* coro_nready is already taken care of by destroy */
1031	continue;	1126	continue;
1032	}	1127	}
1033		1128
		1129	--coro_nready;
		1130	UNLOCK;
1034	break;	1131	break;
1035	}	1132	}
1036		1133
1037	/* free this only after the transfer */	1134	/* free this only after the transfer */
1038	prev_sv = SvRV (coro_current);	1135	prev_sv = SvRV (coro_current);
…		…
1041		1138
1042	assert (ta->next->flags & CF_READY);	1139	assert (ta->next->flags & CF_READY);
1043	ta->next->flags &= ~CF_READY;	1140	ta->next->flags &= ~CF_READY;
1044		1141
1045	LOCK;	1142	LOCK;
1046	free_coro_mortal ();	1143	free_coro_mortal (aTHX);
1047	coro_mortal = prev_sv;	1144	coro_mortal = prev_sv;
1048	UNLOCK;	1145	UNLOCK;
1049	}	1146	}
1050		1147
1051	static void	1148	static void
1052	prepare_cede (struct transfer_args *ta)	1149	prepare_cede (pTHX_ struct transfer_args *ta)
1053	{	1150	{
1054	api_ready (coro_current);	1151	api_ready (coro_current);
1055	prepare_schedule (ta);	1152	prepare_schedule (aTHX_ ta);
1056	}	1153	}
1057		1154
1058	static int	1155	static int
1059	prepare_cede_notself (struct transfer_args *ta)	1156	prepare_cede_notself (pTHX_ struct transfer_args *ta)
1060	{	1157	{
1061	if (coro_nready)	1158	if (coro_nready)
1062	{	1159	{
1063	SV *prev = SvRV (coro_current);	1160	SV *prev = SvRV (coro_current);
1064	prepare_schedule (ta);	1161	prepare_schedule (aTHX_ ta);
1065	api_ready (prev);	1162	api_ready (prev);
1066	return 1;	1163	return 1;
1067	}	1164	}
1068	else	1165	else
1069	return 0;	1166	return 0;
1070	}	1167	}
1071		1168
1072	static void	1169	static void
1073	api_schedule (void)	1170	api_schedule (void)
1074	{	1171	{
		1172	dTHX;
1075	struct transfer_args ta;	1173	struct transfer_args ta;
1076		1174
1077	prepare_schedule (&ta);	1175	prepare_schedule (aTHX_ &ta);
1078	TRANSFER (ta);	1176	TRANSFER (ta);
1079	}	1177	}
1080		1178
1081	static int	1179	static int
1082	api_cede (void)	1180	api_cede (void)
1083	{	1181	{
		1182	dTHX;
1084	struct transfer_args ta;	1183	struct transfer_args ta;
1085		1184
1086	prepare_cede (&ta);	1185	prepare_cede (aTHX_ &ta);
1087		1186
1088	if (ta.prev != ta.next)	1187	if (ta.prev != ta.next)
1089	{	1188	{
1090	TRANSFER (ta);	1189	TRANSFER (ta);
1091	return 1;	1190	return 1;
…		…
1095	}	1194	}
1096		1195
1097	static int	1196	static int
1098	api_cede_notself (void)	1197	api_cede_notself (void)
1099	{	1198	{
		1199	dTHX;
1100	struct transfer_args ta;	1200	struct transfer_args ta;
1101		1201
1102	if (prepare_cede_notself (&ta))	1202	if (prepare_cede_notself (aTHX_ &ta))
1103	{	1203	{
1104	TRANSFER (ta);	1204	TRANSFER (ta);
1105	return 1;	1205	return 1;
1106	}	1206	}
1107	else	1207	else
…		…
1123		1223
1124	newCONSTSUB (coro_state_stash, "SAVE_DEFAV", newSViv (CORO_SAVE_DEFAV));	1224	newCONSTSUB (coro_state_stash, "SAVE_DEFAV", newSViv (CORO_SAVE_DEFAV));
1125	newCONSTSUB (coro_state_stash, "SAVE_DEFSV", newSViv (CORO_SAVE_DEFSV));	1225	newCONSTSUB (coro_state_stash, "SAVE_DEFSV", newSViv (CORO_SAVE_DEFSV));
1126	newCONSTSUB (coro_state_stash, "SAVE_ERRSV", newSViv (CORO_SAVE_ERRSV));	1226	newCONSTSUB (coro_state_stash, "SAVE_ERRSV", newSViv (CORO_SAVE_ERRSV));
1127	newCONSTSUB (coro_state_stash, "SAVE_IRSSV", newSViv (CORO_SAVE_IRSSV));	1227	newCONSTSUB (coro_state_stash, "SAVE_IRSSV", newSViv (CORO_SAVE_IRSSV));
		1228	newCONSTSUB (coro_state_stash, "SAVE_DEFFH", newSViv (CORO_SAVE_DEFFH));
		1229	newCONSTSUB (coro_state_stash, "SAVE_DEF", newSViv (CORO_SAVE_DEF));
1128	newCONSTSUB (coro_state_stash, "SAVE_ALL", newSViv (CORO_SAVE_ALL));	1230	newCONSTSUB (coro_state_stash, "SAVE_ALL", newSViv (CORO_SAVE_ALL));
1129		1231
1130	main_mainstack = PL_mainstack;	1232	main_mainstack = PL_mainstack;
		1233	main_top_env = PL_top_env;
		1234
		1235	while (main_top_env->je_prev)
		1236	main_top_env = main_top_env->je_prev;
1131		1237
1132	coroapi.ver = CORO_API_VERSION;	1238	coroapi.ver = CORO_API_VERSION;
1133	coroapi.transfer = api_transfer;	1239	coroapi.transfer = api_transfer;
1134		1240
1135	assert (("PRIO_NORMAL must be 0", !PRIO_NORMAL));	1241	assert (("PRIO_NORMAL must be 0", !PRIO_NORMAL));
…		…
1143	HV *hv;	1249	HV *hv;
1144	int i;	1250	int i;
1145		1251
1146	Newz (0, coro, 1, struct coro);	1252	Newz (0, coro, 1, struct coro);
1147	coro->args = newAV ();	1253	coro->args = newAV ();
1148	coro->save = CORO_SAVE_ALL;	1254	coro->save = CORO_SAVE_DEF;
1149	coro->flags = CF_NEW;	1255	coro->flags = CF_NEW;
1150		1256
		1257	if (coro_first) coro_first->prev = coro;
		1258	coro->next = coro_first;
		1259	coro_first = coro;
		1260
1151	hv = newHV ();	1261	coro->hv = hv = newHV ();
1152	sv_magicext ((SV )hv, 0, PERL_MAGIC_ext, &coro_state_vtbl, (char )coro, 0)->mg_flags \|= MGf_DUP;	1262	sv_magicext ((SV )hv, 0, PERL_MAGIC_ext, &coro_state_vtbl, (char )coro, 0)->mg_flags \|= MGf_DUP;
1153	RETVAL = sv_bless (newRV_noinc ((SV *)hv), gv_stashpv (klass, 1));	1263	RETVAL = sv_bless (newRV_noinc ((SV *)hv), gv_stashpv (klass, 1));
1154		1264
1155	for (i = 1; i < items; i++)	1265	for (i = 1; i < items; i++)
1156	av_push (coro->args, newSVsv (ST (i)));	1266	av_push (coro->args, newSVsv (ST (i)));
…		…
1160		1270
1161	int	1271	int
1162	save (SV *coro, int new_save = -1)	1272	save (SV *coro, int new_save = -1)
1163	CODE:	1273	CODE:
1164	RETVAL = api_save (coro, new_save);	1274	RETVAL = api_save (coro, new_save);
		1275	OUTPUT:
		1276	RETVAL
		1277
		1278	int
		1279	save_also (SV *coro_sv, int save_also)
		1280	CODE:
		1281	{
		1282	struct coro *coro = SvSTATE (coro_sv);
		1283	RETVAL = coro->save;
		1284	coro->save \|= save_also;
		1285	}
1165	OUTPUT:	1286	OUTPUT:
1166	RETVAL	1287	RETVAL
1167		1288
1168	void	1289	void
1169	_set_stacklevel (...)	1290	_set_stacklevel (...)
…		…
1185		1306
1186	case 1:	1307	case 1:
1187	if (items != 2)	1308	if (items != 2)
1188	croak ("Coro::State::transfer (prev,next) expects two arguments, not %d", items);	1309	croak ("Coro::State::transfer (prev,next) expects two arguments, not %d", items);
1189		1310
1190	prepare_transfer (&ta, ST (0), ST (1));	1311	prepare_transfer (aTHX_ &ta, ST (0), ST (1));
1191	break;	1312	break;
1192		1313
1193	case 2:	1314	case 2:
1194	prepare_schedule (&ta);	1315	prepare_schedule (aTHX_ &ta);
1195	break;	1316	break;
1196		1317
1197	case 3:	1318	case 3:
1198	prepare_cede (&ta);	1319	prepare_cede (aTHX_ &ta);
1199	break;	1320	break;
1200		1321
1201	case 4:	1322	case 4:
1202	if (!prepare_cede_notself (&ta))	1323	if (!prepare_cede_notself (aTHX_ &ta))
1203	XSRETURN_EMPTY;	1324	XSRETURN_EMPTY;
1204		1325
1205	break;	1326	break;
1206	}	1327	}
1207		1328
…		…
1213	}	1334	}
1214		1335
1215	bool	1336	bool
1216	_destroy (SV *coro_sv)	1337	_destroy (SV *coro_sv)
1217	CODE:	1338	CODE:
1218	RETVAL = coro_state_destroy (SvSTATE (coro_sv));	1339	RETVAL = coro_state_destroy (aTHX_ SvSTATE (coro_sv));
1219	OUTPUT:	1340	OUTPUT:
1220	RETVAL	1341	RETVAL
1221		1342
1222	void	1343	void
1223	_exit (code)	1344	_exit (code)
…		…
1225	PROTOTYPE: $	1346	PROTOTYPE: $
1226	CODE:	1347	CODE:
1227	_exit (code);	1348	_exit (code);
1228		1349
1229	int	1350	int
		1351	cctx_stacksize (int new_stacksize = 0)
		1352	CODE:
		1353	RETVAL = coro_stacksize;
		1354	if (new_stacksize)
		1355	coro_stacksize = new_stacksize;
		1356	OUTPUT:
		1357	RETVAL
		1358
		1359	int
1230	cctx_count ()	1360	cctx_count ()
1231	CODE:	1361	CODE:
1232	RETVAL = cctx_count;	1362	RETVAL = cctx_count;
1233	OUTPUT:	1363	OUTPUT:
1234	RETVAL	1364	RETVAL
…		…
1238	CODE:	1368	CODE:
1239	RETVAL = cctx_idle;	1369	RETVAL = cctx_idle;
1240	OUTPUT:	1370	OUTPUT:
1241	RETVAL	1371	RETVAL
1242		1372
		1373	void
		1374	list ()
		1375	PPCODE:
		1376	{
		1377	struct coro *coro;
		1378	for (coro = coro_first; coro; coro = coro->next)
		1379	if (coro->hv)
		1380	XPUSHs (sv_2mortal (newRV_inc ((SV *)coro->hv)));
		1381	}
		1382
		1383	void
		1384	_eval (Coro::State coro, SV *coderef)
		1385	CODE:
		1386	{
		1387	if (coro->mainstack)
		1388	{
		1389	struct coro temp;
		1390	Zero (&temp, 1, struct coro);
		1391	temp.save = CORO_SAVE_ALL;
		1392
		1393	if (!(coro->flags & CF_RUNNING))
		1394	{
		1395	save_perl (aTHX_ &temp);
		1396	load_perl (aTHX_ coro);
		1397	}
		1398
		1399	{
		1400	dSP;
		1401	ENTER;
		1402	SAVETMPS;
		1403	PUSHMARK (SP);
		1404	PUTBACK;
		1405	call_sv (coderef, G_KEEPERR \| G_EVAL \| G_VOID \| G_DISCARD);
		1406	SPAGAIN;
		1407	FREETMPS;
		1408	LEAVE;
		1409	PUTBACK;
		1410	}
		1411
		1412	if (!(coro->flags & CF_RUNNING))
		1413	{
		1414	save_perl (aTHX_ coro);
		1415	load_perl (aTHX_ &temp);
		1416	}
		1417	}
		1418	}
		1419
		1420	SV *
		1421	is_ready (Coro::State coro)
		1422	PROTOTYPE: $
		1423	ALIAS:
		1424	is_ready = CF_READY
		1425	is_running = CF_RUNNING
		1426	is_new = CF_NEW
		1427	is_destroyed = CF_DESTROYED
		1428	CODE:
		1429	RETVAL = boolSV (coro->flags & ix);
		1430	OUTPUT:
		1431	RETVAL
		1432
		1433	SV *
		1434	has_stack (Coro::State coro)
		1435	PROTOTYPE: $
		1436	CODE:
		1437	RETVAL = boolSV (!!coro->cctx);
		1438	OUTPUT:
		1439	RETVAL
		1440
		1441	IV
		1442	rss (Coro::State coro)
		1443	PROTOTYPE: $
		1444	CODE:
		1445	RETVAL = coro_rss (coro);
		1446	OUTPUT:
		1447	RETVAL
		1448
		1449
1243	MODULE = Coro::State PACKAGE = Coro	1450	MODULE = Coro::State PACKAGE = Coro
1244		1451
1245	BOOT:	1452	BOOT:
1246	{	1453	{
1247	int i;	1454	int i;
		1455
		1456	sv_pool_rss = get_sv ("Coro::POOL_RSS" , TRUE);
		1457	sv_pool_size = get_sv ("Coro::POOL_SIZE" , TRUE);
		1458	av_async_pool = get_av ("Coro::async_pool", TRUE);
		1459
		1460	coro_current = get_sv ("Coro::current", FALSE);
		1461	SvREADONLY_on (coro_current);
1248		1462
1249	coro_stash = gv_stashpv ("Coro", TRUE);	1463	coro_stash = gv_stashpv ("Coro", TRUE);
1250		1464
1251	newCONSTSUB (coro_stash, "PRIO_MAX", newSViv (PRIO_MAX));	1465	newCONSTSUB (coro_stash, "PRIO_MAX", newSViv (PRIO_MAX));
1252	newCONSTSUB (coro_stash, "PRIO_HIGH", newSViv (PRIO_HIGH));	1466	newCONSTSUB (coro_stash, "PRIO_HIGH", newSViv (PRIO_HIGH));
1253	newCONSTSUB (coro_stash, "PRIO_NORMAL", newSViv (PRIO_NORMAL));	1467	newCONSTSUB (coro_stash, "PRIO_NORMAL", newSViv (PRIO_NORMAL));
1254	newCONSTSUB (coro_stash, "PRIO_LOW", newSViv (PRIO_LOW));	1468	newCONSTSUB (coro_stash, "PRIO_LOW", newSViv (PRIO_LOW));
1255	newCONSTSUB (coro_stash, "PRIO_IDLE", newSViv (PRIO_IDLE));	1469	newCONSTSUB (coro_stash, "PRIO_IDLE", newSViv (PRIO_IDLE));
1256	newCONSTSUB (coro_stash, "PRIO_MIN", newSViv (PRIO_MIN));	1470	newCONSTSUB (coro_stash, "PRIO_MIN", newSViv (PRIO_MIN));
1257
1258	coro_current = get_sv ("Coro::current", FALSE);
1259	SvREADONLY_on (coro_current);
1260		1471
1261	for (i = PRIO_MAX - PRIO_MIN + 1; i--; )	1472	for (i = PRIO_MAX - PRIO_MIN + 1; i--; )
1262	coro_ready[i] = newAV ();	1473	coro_ready[i] = newAV ();
1263		1474
1264	{	1475	{
…		…
1314	CODE:	1525	CODE:
1315	RETVAL = boolSV (api_ready (self));	1526	RETVAL = boolSV (api_ready (self));
1316	OUTPUT:	1527	OUTPUT:
1317	RETVAL	1528	RETVAL
1318		1529
1319	SV *
1320	is_ready (SV *self)
1321	PROTOTYPE: $
1322	CODE:
1323	RETVAL = boolSV (api_is_ready (self));
1324	OUTPUT:
1325	RETVAL
1326
1327	int	1530	int
1328	nready (...)	1531	nready (...)
1329	PROTOTYPE:	1532	PROTOTYPE:
1330	CODE:	1533	CODE:
1331	RETVAL = coro_nready;	1534	RETVAL = coro_nready;
1332	OUTPUT:	1535	OUTPUT:
1333	RETVAL	1536	RETVAL
1334		1537
		1538	# for async_pool speedup
		1539	void
		1540	_pool_1 (SV *cb)
		1541	CODE:
		1542	{
		1543	int i, len;
		1544	HV hv = (HV )SvRV (coro_current);
		1545	AV *defav = GvAV (PL_defgv);
		1546	SV *invoke = hv_delete (hv, "_invoke", sizeof ("_invoke") - 1, 0);
		1547	AV *invoke_av;
		1548
		1549	if (!invoke)
		1550	croak ("\3terminate\2\n");
		1551
		1552	hv_store (hv, "desc", sizeof ("desc") - 1,
		1553	newSVpvn ("[async_pool]", sizeof ("[async_pool]") - 1), 0);
		1554
		1555	invoke_av = (AV *)SvRV (invoke);
		1556	len = av_len (invoke_av);
		1557
		1558	sv_setsv (cb, AvARRAY (invoke_av)[0]);
		1559
		1560	if (len > 0)
		1561	{
		1562	av_fill (defav, len - 1);
		1563	for (i = 0; i < len; ++i)
		1564	av_store (defav, i, SvREFCNT_inc (AvARRAY (invoke_av)[i + 1]));
		1565	}
		1566
		1567	SvREFCNT_dec (invoke);
		1568	}
		1569
		1570	void
		1571	_pool_2 (SV *cb)
		1572	CODE:
		1573	{
		1574	struct coro *coro = SvSTATE (coro_current);
		1575
		1576	sv_setsv (cb, &PL_sv_undef);
		1577
		1578	if (coro_rss (coro) > SvIV (sv_pool_rss)
		1579	\|\| av_len (av_async_pool) + 1 >= SvIV (sv_pool_size))
		1580	croak ("\3terminate\2\n");
		1581
		1582	av_clear (GvAV (PL_defgv));
		1583	hv_store ((HV *)SvRV (coro_current), "desc", sizeof ("desc") - 1,
		1584	newSVpvn ("[async_pool idle]", sizeof ("[async_pool idle]") - 1), 0);
		1585	coro->save = CORO_SAVE_DEF;
		1586	coro->prio = 0;
		1587	av_push (av_async_pool, newSVsv (coro_current));
		1588	}
		1589
		1590
1335	MODULE = Coro::State PACKAGE = Coro::AIO	1591	MODULE = Coro::State PACKAGE = Coro::AIO
1336		1592
1337	SV *	1593	SV *
1338	_get_state ()	1594	_get_state ()
1339	CODE:	1595	CODE:

Diff Legend

-–
+Removed lines
-+
+Added lines
-<
+Changed lines
->
+Changed lines

Comparing Coro/Coro/State.xs (file contents): Revision 1.136 by root, Fri Jan 12 01:05:55 2007 UTC vs. Revision 1.163 by root, Mon Sep 24 18:30:58 2007 UTC

Diff Legend

Comparing Coro/Coro/State.xs (file contents):
Revision 1.136 by root, Fri Jan 12 01:05:55 2007 UTC vs.
Revision 1.163 by root, Mon Sep 24 18:30:58 2007 UTC