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

Comparing Coro/Coro/State.xs (file contents):
Revision 1.135 by root, Fri Jan 5 18:25:51 2007 UTC vs.
Revision 1.165 by root, Wed Sep 26 19:26:48 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
…		…
112	#else	116	#else
113	# define LOCK (void)0	117	# define LOCK (void)0
114	# define UNLOCK (void)0	118	# define UNLOCK (void)0
115	#endif	119	#endif
116		120
		121	/* helper storage struct for Coro::AIO */
117	struct io_state	122	struct io_state
118	{	123	{
119	int errorno;	124	int errorno;
120	I32 laststype;	125	I32 laststype;
121	int laststatval;	126	int laststatval;
122	Stat_t statcache;	127	Stat_t statcache;
123	};	128	};
124		129
		130	static size_t coro_stacksize = CORO_STACKSIZE;
125	static struct CoroAPI coroapi;	131	static struct CoroAPI coroapi;
126	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;
127	static HV coro_state_stash, coro_stash;	134	static HV coro_state_stash, coro_stash;
128	static SV coro_mortal; / will be freed after next transfer */	135	static SV coro_mortal; / will be freed after next transfer */
129		136
		137	/* async_pool helper stuff */
		138	static SV *sv_pool_rss;
		139	static SV *sv_pool_size;
		140	static AV *av_async_pool;
		141
130	static struct coro_cctx *cctx_first;	142	static struct coro_cctx *cctx_first;
131	static int cctx_count, cctx_idle;	143	static int cctx_count, cctx_idle;
		144
		145	enum {
		146	CC_MAPPED = 0x01,
		147	CC_TRACE = 0x02,
		148	CC_NOREUSE = 0x04, /* throw this away after tracing */
		149	};
132		150
133	/* this is a structure representing a c-level coroutine */	151	/* this is a structure representing a c-level coroutine */
134	typedef struct coro_cctx {	152	typedef struct coro_cctx {
135	struct coro_cctx *next;	153	struct coro_cctx *next;
136		154
137	/* the stack */	155	/* the stack */
138	void *sptr;	156	void *sptr;
139	long ssize; /* positive == mmap, otherwise malloc */	157	size_t ssize;
140		158
141	/* cpu state */	159	/* cpu state */
142	void idle_sp; / sp of top-level transfer/schedule/cede call */	160	void idle_sp; / sp of top-level transfer/schedule/cede call */
143	JMPENV idle_te; / same as idle_sp, but for top_env, TODO: remove once stable */	161	JMPENV idle_te; / same as idle_sp, but for top_env, TODO: remove once stable */
144	JMPENV *top_env;	162	JMPENV *top_env;
145	coro_context cctx;	163	coro_context cctx;
146		164
147	int inuse;
148
149	#if USE_VALGRIND	165	#if CORO_USE_VALGRIND
150	int valgrind_id;	166	int valgrind_id;
151	#endif	167	#endif
		168	unsigned char flags;
152	} coro_cctx;	169	} coro_cctx;
153		170
154	enum {	171	enum {
155	CF_RUNNING = 0x0001, /* coroutine is running */	172	CF_RUNNING = 0x0001, /* coroutine is running */
156	CF_READY = 0x0002, /* coroutine is ready */	173	CF_READY = 0x0002, /* coroutine is ready */
…		…
171		188
172	/* optionally saved, might be zero */	189	/* optionally saved, might be zero */
173	AV defav; / @_ */	190	AV defav; / @_ */
174	SV defsv; / $_ */	191	SV defsv; / $_ */
175	SV errsv; / $@ */	192	SV errsv; / $@ */
		193	GV deffh; / default filehandle */
176	SV irssv; / $/ */	194	SV irssv; / $/ */
177	SV irssv_sv; / real $/ cache */	195	SV irssv_sv; / real $/ cache */
178		196
179	#define VAR(name,type) type name;	197	#define VAR(name,type) type name;
180	# include "state.h"	198	# include "state.h"
181	#undef VAR	199	#undef VAR
182		200
183	/* coro process data */	201	/* coro process data */
184	int prio;	202	int prio;
		203
		204	/* linked list */
		205	struct coro next, prev;
		206	HV hv; / the perl hash associated with this coro, if any */
185	};	207	};
186		208
187	typedef struct coro *Coro__State;	209	typedef struct coro *Coro__State;
188	typedef struct coro *Coro__State_or_hashref;	210	typedef struct coro *Coro__State_or_hashref;
189		211
		212	/ Coro ******************************************************************/
		213
		214	#define PRIO_MAX 3
		215	#define PRIO_HIGH 1
		216	#define PRIO_NORMAL 0
		217	#define PRIO_LOW -1
		218	#define PRIO_IDLE -3
		219	#define PRIO_MIN -4
		220
		221	/* for Coro.pm */
		222	static SV *coro_current;
		223	static AV *coro_ready [PRIO_MAX-PRIO_MIN+1];
		224	static int coro_nready;
		225	static struct coro *coro_first;
		226
		227	/ lowlevel stuff ********************************************************/
		228
190	static AV *	229	static AV *
191	coro_clone_padlist (CV *cv)	230	coro_clone_padlist (pTHX_ CV *cv)
192	{	231	{
193	AV *padlist = CvPADLIST (cv);	232	AV *padlist = CvPADLIST (cv);
194	AV newpadlist, newpad;	233	AV newpadlist, newpad;
195		234
196	newpadlist = newAV ();	235	newpadlist = newAV ();
…		…
208		247
209	return newpadlist;	248	return newpadlist;
210	}	249	}
211		250
212	static void	251	static void
213	free_padlist (AV *padlist)	252	free_padlist (pTHX_ AV *padlist)
214	{	253	{
215	/* may be during global destruction */	254	/* may be during global destruction */
216	if (SvREFCNT (padlist))	255	if (SvREFCNT (padlist))
217	{	256	{
218	I32 i = AvFILLp (padlist);	257	I32 i = AvFILLp (padlist);
…		…
239	AV *padlist;	278	AV *padlist;
240	AV av = (AV )mg->mg_obj;	279	AV av = (AV )mg->mg_obj;
241		280
242	/* casting is fun. */	281	/* casting is fun. */
243	while (&PL_sv_undef != (SV )(padlist = (AV )av_pop (av)))	282	while (&PL_sv_undef != (SV )(padlist = (AV )av_pop (av)))
244	free_padlist (padlist);	283	free_padlist (aTHX_ padlist);
245		284
246	SvREFCNT_dec (av);	285	SvREFCNT_dec (av);
247		286
248	return 0;	287	return 0;
249	}	288	}
…		…
259	: mg_find ((SV *)cv, PERL_MAGIC_coro) \	298	: mg_find ((SV *)cv, PERL_MAGIC_coro) \
260	: 0	299	: 0
261		300
262	/* the next two functions merely cache the padlists */	301	/* the next two functions merely cache the padlists */
263	static void	302	static void
264	get_padlist (CV *cv)	303	get_padlist (pTHX_ CV *cv)
265	{	304	{
266	MAGIC *mg = CORO_MAGIC (cv);	305	MAGIC *mg = CORO_MAGIC (cv);
267	AV *av;	306	AV *av;
268		307
269	if (mg && AvFILLp ((av = (AV *)mg->mg_obj)) >= 0)	308	if (mg && AvFILLp ((av = (AV *)mg->mg_obj)) >= 0)
270	CvPADLIST (cv) = (AV *)AvARRAY (av)[AvFILLp (av)--];	309	CvPADLIST (cv) = (AV *)AvARRAY (av)[AvFILLp (av)--];
271	else	310	else
272	{	311	{
273	#if PREFER_PERL_FUNCTIONS	312	#if CORO_PREFER_PERL_FUNCTIONS
274	/* this is probably cleaner, but also slower? */	313	/* this is probably cleaner, but also slower? */
275	CV *cp = Perl_cv_clone (cv);	314	CV *cp = Perl_cv_clone (cv);
276	CvPADLIST (cv) = CvPADLIST (cp);	315	CvPADLIST (cv) = CvPADLIST (cp);
277	CvPADLIST (cp) = 0;	316	CvPADLIST (cp) = 0;
278	SvREFCNT_dec (cp);	317	SvREFCNT_dec (cp);
279	#else	318	#else
280	CvPADLIST (cv) = coro_clone_padlist (cv);	319	CvPADLIST (cv) = coro_clone_padlist (aTHX_ cv);
281	#endif	320	#endif
282	}	321	}
283	}	322	}
284		323
285	static void	324	static void
286	put_padlist (CV *cv)	325	put_padlist (pTHX_ CV *cv)
287	{	326	{
288	MAGIC *mg = CORO_MAGIC (cv);	327	MAGIC *mg = CORO_MAGIC (cv);
289	AV *av;	328	AV *av;
290		329
291	if (!mg)	330	if (!mg)
…		…
302	av_extend (av, AvMAX (av) + 1);	341	av_extend (av, AvMAX (av) + 1);
303		342
304	AvARRAY (av)[++AvFILLp (av)] = (SV *)CvPADLIST (cv);	343	AvARRAY (av)[++AvFILLp (av)] = (SV *)CvPADLIST (cv);
305	}	344	}
306		345
		346	/ load & save, init *****************************************************/
		347
307	#define SB do {	348	#define SB do {
308	#define SE } while (0)	349	#define SE } while (0)
309		350
310	#define REPLACE_SV(sv,val) SB SvREFCNT_dec (sv); (sv) = (val); (val) = 0; SE	351	#define REPLACE_SV(sv,val) SB SvREFCNT_dec (sv); (sv) = (val); (val) = 0; SE
311		352
312	static void	353	static void
313	load_perl (Coro__State c)	354	load_perl (pTHX_ Coro__State c)
314	{	355	{
315	#define VAR(name,type) PL_ ## name = c->name;	356	#define VAR(name,type) PL_ ## name = c->name;
316	# include "state.h"	357	# include "state.h"
317	#undef VAR	358	#undef VAR
318		359
319	if (c->defav) REPLACE_SV (GvAV (PL_defgv), c->defav);	360	if (c->defav) REPLACE_SV (GvAV (PL_defgv), c->defav);
320	if (c->defsv) REPLACE_SV (DEFSV , c->defsv);	361	if (c->defsv) REPLACE_SV (DEFSV , c->defsv);
321	if (c->errsv) REPLACE_SV (ERRSV , c->errsv);	362	if (c->errsv) REPLACE_SV (ERRSV , c->errsv);
		363	if (c->deffh) REPLACE_SV (PL_defoutgv , c->deffh);
		364
322	if (c->irssv)	365	if (c->irssv)
323	{	366	{
324	if (c->irssv == PL_rs \|\| sv_eq (PL_rs, c->irssv))	367	if (c->irssv == PL_rs \|\| sv_eq (PL_rs, c->irssv))
		368	{
325	SvREFCNT_dec (c->irssv);	369	SvREFCNT_dec (c->irssv);
		370	c->irssv = 0;
		371	}
326	else	372	else
327	{	373	{
328	REPLACE_SV (PL_rs, c->irssv);	374	REPLACE_SV (PL_rs, c->irssv);
329	if (!c->irssv_sv) c->irssv_sv = get_sv ("/", 0);	375	if (!c->irssv_sv) c->irssv_sv = get_sv ("/", 0);
330	sv_setsv (c->irssv_sv, PL_rs);	376	sv_setsv (c->irssv_sv, PL_rs);
…		…
336	CV *cv;	382	CV *cv;
337		383
338	/* now do the ugly restore mess */	384	/* now do the ugly restore mess */
339	while ((cv = (CV *)POPs))	385	while ((cv = (CV *)POPs))
340	{	386	{
341	put_padlist (cv); /* mark this padlist as available */	387	put_padlist (aTHX_ cv); /* mark this padlist as available */
342	CvDEPTH (cv) = PTR2IV (POPs);	388	CvDEPTH (cv) = PTR2IV (POPs);
343	CvPADLIST (cv) = (AV *)POPs;	389	CvPADLIST (cv) = (AV *)POPs;
344	}	390	}
345		391
346	PUTBACK;	392	PUTBACK;
347	}	393	}
348	}	394	}
349		395
350	static void	396	static void
351	save_perl (Coro__State c)	397	save_perl (pTHX_ Coro__State c)
352	{	398	{
353	{	399	{
354	dSP;	400	dSP;
355	I32 cxix = cxstack_ix;	401	I32 cxix = cxstack_ix;
356	PERL_CONTEXT *ccstk = cxstack;	402	PERL_CONTEXT *ccstk = cxstack;
…		…
359	/*	405	/*
360	* the worst thing you can imagine happens first - we have to save	406	* the worst thing you can imagine happens first - we have to save
361	* (and reinitialize) all cv's in the whole callchain :(	407	* (and reinitialize) all cv's in the whole callchain :(
362	*/	408	*/
363		409
364	EXTEND (SP, 3 + 1);
365	PUSHs (Nullsv);	410	XPUSHs (Nullsv);
366	/* this loop was inspired by pp_caller */	411	/* this loop was inspired by pp_caller */
367	for (;;)	412	for (;;)
368	{	413	{
369	while (cxix >= 0)	414	while (cxix >= 0)
370	{	415	{
371	PERL_CONTEXT *cx = &ccstk[cxix--];	416	PERL_CONTEXT *cx = &ccstk[cxix--];
372		417
373	if (CxTYPE (cx) == CXt_SUB)	418	if (CxTYPE (cx) == CXt_SUB \|\| CxTYPE (cx) == CXt_FORMAT)
374	{	419	{
375	CV *cv = cx->blk_sub.cv;	420	CV *cv = cx->blk_sub.cv;
376		421
377	if (CvDEPTH (cv))	422	if (CvDEPTH (cv))
378	{	423	{
…		…
380	PUSHs ((SV *)CvPADLIST (cv));	425	PUSHs ((SV *)CvPADLIST (cv));
381	PUSHs (INT2PTR (SV *, CvDEPTH (cv)));	426	PUSHs (INT2PTR (SV *, CvDEPTH (cv)));
382	PUSHs ((SV *)cv);	427	PUSHs ((SV *)cv);
383		428
384	CvDEPTH (cv) = 0;	429	CvDEPTH (cv) = 0;
385	get_padlist (cv);	430	get_padlist (aTHX_ cv);
386	}	431	}
387	}	432	}
388	}	433	}
389		434
390	if (top_si->si_type == PERLSI_MAIN)	435	if (top_si->si_type == PERLSI_MAIN)
391	break;	436	break;
392		437
393	top_si = top_si->si_prev;	438	top_si = top_si->si_prev;
394	ccstk = top_si->si_cxstack;	439	ccstk = top_si->si_cxstack;
395	cxix = top_si->si_cxix;	440	cxix = top_si->si_cxix;
396	}	441	}
397		442
398	PUTBACK;	443	PUTBACK;
399	}	444	}
400		445
401	c->defav = c->save & CORO_SAVE_DEFAV ? (AV *)SvREFCNT_inc (GvAV (PL_defgv)) : 0;	446	c->defav = c->save & CORO_SAVE_DEFAV ? (AV *)SvREFCNT_inc (GvAV (PL_defgv)) : 0;
402	c->defsv = c->save & CORO_SAVE_DEFSV ? SvREFCNT_inc (DEFSV) : 0;	447	c->defsv = c->save & CORO_SAVE_DEFSV ? SvREFCNT_inc (DEFSV) : 0;
403	c->errsv = c->save & CORO_SAVE_ERRSV ? SvREFCNT_inc (ERRSV) : 0;	448	c->errsv = c->save & CORO_SAVE_ERRSV ? SvREFCNT_inc (ERRSV) : 0;
		449	c->deffh = c->save & CORO_SAVE_DEFFH ? (GV *)SvREFCNT_inc (PL_defoutgv) : 0;
404	c->irssv = c->save & CORO_SAVE_IRSSV ? SvREFCNT_inc (PL_rs) : 0;	450	c->irssv = c->save & CORO_SAVE_IRSSV ? SvREFCNT_inc (PL_rs) : 0;
405		451
406	#define VAR(name,type)c->name = PL_ ## name;	452	#define VAR(name,type)c->name = PL_ ## name;
407	# include "state.h"	453	# include "state.h"
408	#undef VAR	454	#undef VAR
…		…
412	* allocate various perl stacks. This is an exact copy	458	* allocate various perl stacks. This is an exact copy
413	* of perl.c:init_stacks, except that it uses less memory	459	* of perl.c:init_stacks, except that it uses less memory
414	* on the (sometimes correct) assumption that coroutines do	460	* on the (sometimes correct) assumption that coroutines do
415	* not usually need a lot of stackspace.	461	* not usually need a lot of stackspace.
416	*/	462	*/
417	#if PREFER_PERL_FUNCTIONS	463	#if CORO_PREFER_PERL_FUNCTIONS
418	# define coro_init_stacks init_stacks	464	# define coro_init_stacks init_stacks
419	#else	465	#else
420	static void	466	static void
421	coro_init_stacks ()	467	coro_init_stacks (pTHX)
422	{	468	{
423	PL_curstackinfo = new_stackinfo(128, 1024/sizeof(PERL_CONTEXT));	469	PL_curstackinfo = new_stackinfo(64, 6);
424	PL_curstackinfo->si_type = PERLSI_MAIN;	470	PL_curstackinfo->si_type = PERLSI_MAIN;
425	PL_curstack = PL_curstackinfo->si_stack;	471	PL_curstack = PL_curstackinfo->si_stack;
426	PL_mainstack = PL_curstack; /* remember in case we switch stacks */	472	PL_mainstack = PL_curstack; /* remember in case we switch stacks */
427		473
428	PL_stack_base = AvARRAY(PL_curstack);	474	PL_stack_base = AvARRAY(PL_curstack);
429	PL_stack_sp = PL_stack_base;	475	PL_stack_sp = PL_stack_base;
430	PL_stack_max = PL_stack_base + AvMAX(PL_curstack);	476	PL_stack_max = PL_stack_base + AvMAX(PL_curstack);
431		477
432	New(50,PL_tmps_stack,128,SV*);	478	New(50,PL_tmps_stack,64,SV*);
433	PL_tmps_floor = -1;	479	PL_tmps_floor = -1;
434	PL_tmps_ix = -1;	480	PL_tmps_ix = -1;
435	PL_tmps_max = 128;	481	PL_tmps_max = 64;
436		482
437	New(54,PL_markstack,32,I32);	483	New(54,PL_markstack,16,I32);
438	PL_markstack_ptr = PL_markstack;	484	PL_markstack_ptr = PL_markstack;
439	PL_markstack_max = PL_markstack + 32;	485	PL_markstack_max = PL_markstack + 16;
440		486
441	#ifdef SET_MARK_OFFSET	487	#ifdef SET_MARK_OFFSET
442	SET_MARK_OFFSET;	488	SET_MARK_OFFSET;
443	#endif	489	#endif
444		490
445	New(54,PL_scopestack,32,I32);	491	New(54,PL_scopestack,16,I32);
446	PL_scopestack_ix = 0;	492	PL_scopestack_ix = 0;
447	PL_scopestack_max = 32;	493	PL_scopestack_max = 16;
448		494
449	New(54,PL_savestack,64,ANY);	495	New(54,PL_savestack,64,ANY);
450	PL_savestack_ix = 0;	496	PL_savestack_ix = 0;
451	PL_savestack_max = 64;	497	PL_savestack_max = 64;
452		498
453	#if !PERL_VERSION_ATLEAST (5,9,0)	499	#if !PERL_VERSION_ATLEAST (5,9,0)
454	New(54,PL_retstack,16,OP*);	500	New(54,PL_retstack,4,OP*);
455	PL_retstack_ix = 0;	501	PL_retstack_ix = 0;
456	PL_retstack_max = 16;	502	PL_retstack_max = 4;
457	#endif	503	#endif
458	}	504	}
459	#endif	505	#endif
460		506
461	/*	507	/*
462	* destroy the stacks, the callchain etc...	508	* destroy the stacks, the callchain etc...
463	*/	509	*/
464	static void	510	static void
465	coro_destroy_stacks ()	511	coro_destroy_stacks (pTHX)
466	{	512	{
467	if (!IN_DESTRUCT)	513	if (!IN_DESTRUCT)
468	{	514	{
469	/* restore all saved variables and stuff */	515	/* restore all saved variables and stuff */
470	LEAVE_SCOPE (0);	516	LEAVE_SCOPE (0);
…		…
503	#if !PERL_VERSION_ATLEAST (5,9,0)	549	#if !PERL_VERSION_ATLEAST (5,9,0)
504	Safefree (PL_retstack);	550	Safefree (PL_retstack);
505	#endif	551	#endif
506	}	552	}
507		553
		554	static size_t
		555	coro_rss (struct coro *coro)
		556	{
		557	size_t rss = sizeof (coro);
		558
		559	if (coro->mainstack)
		560	{
		561	if (coro->flags & CF_RUNNING)
		562	{
		563	#define VAR(name,type)coro->name = PL_ ## name;
		564	# include "state.h"
		565	#undef VAR
		566	}
		567
		568	rss += sizeof (coro->curstackinfo);
		569	rss += sizeof (struct xpvav) + (1 + AvFILL (coro->curstackinfo->si_stack)) * sizeof (SV *);
		570	rss += (coro->curstackinfo->si_cxmax + 1) * sizeof (PERL_CONTEXT);
		571	rss += sizeof (struct xpvav) + (1 + AvFILL (coro->curstack)) * sizeof (SV *);
		572	rss += coro->tmps_max * sizeof (SV *);
		573	rss += (coro->markstack_max - coro->markstack_ptr) * sizeof (I32);
		574	rss += coro->scopestack_max * sizeof (I32);
		575	rss += coro->savestack_max * sizeof (ANY);
		576
		577	#if !PERL_VERSION_ATLEAST (5,9,0)
		578	rss += coro->retstack_max * sizeof (OP *);
		579	#endif
		580	}
		581
		582	return rss;
		583	}
		584
		585	/ coroutine stack handling **********************************************/
		586
508	static void	587	static void
509	setup_coro (struct coro *coro)	588	setup_coro (pTHX_ struct coro *coro)
510	{	589	{
511	/*	590	/*
512	* emulate part of the perl startup here.	591	* emulate part of the perl startup here.
513	*/	592	*/
514
515	coro_init_stacks ();	593	coro_init_stacks (aTHX);
516		594
517	PL_curcop = &PL_compiling;	595	PL_curcop = &PL_compiling;
518	PL_in_eval = EVAL_NULL;	596	PL_in_eval = EVAL_NULL;
		597	PL_comppad = 0;
519	PL_curpm = 0;	598	PL_curpm = 0;
520	PL_localizing = 0;	599	PL_localizing = 0;
521	PL_dirty = 0;	600	PL_dirty = 0;
522	PL_restartop = 0;	601	PL_restartop = 0;
523		602
…		…
531	Zero (&myop, 1, LOGOP);	610	Zero (&myop, 1, LOGOP);
532	myop.op_next = Nullop;	611	myop.op_next = Nullop;
533	myop.op_flags = OPf_WANT_VOID;	612	myop.op_flags = OPf_WANT_VOID;
534		613
535	PUSHMARK (SP);	614	PUSHMARK (SP);
536	XPUSHs ((SV *)get_cv ("Coro::State::_coro_init", FALSE));	615	XPUSHs (av_shift (GvAV (PL_defgv)));
537	PUTBACK;	616	PUTBACK;
538	PL_op = (OP *)&myop;	617	PL_op = (OP *)&myop;
539	PL_op = PL_ppaddr[OP_ENTERSUB](aTHX);	618	PL_op = PL_ppaddr[OP_ENTERSUB](aTHX);
540	SPAGAIN;	619	SPAGAIN;
541	}	620	}
542		621
543	ENTER; /* necessary e.g. for dounwind */	622	ENTER; /* necessary e.g. for dounwind */
544	}	623	}
545		624
546	static void	625	static void
547	free_coro_mortal ()	626	free_coro_mortal (pTHX)
548	{	627	{
549	if (coro_mortal)	628	if (coro_mortal)
550	{	629	{
551	SvREFCNT_dec (coro_mortal);	630	SvREFCNT_dec (coro_mortal);
552	coro_mortal = 0;	631	coro_mortal = 0;
553	}	632	}
554	}	633	}
555		634
		635	static void
		636	do_trace (pTHX)
		637	{
		638	if (PL_curcop != &PL_compiling)
		639	{
		640	runops_proc_t old_runops = PL_runops;
		641	dSP;
		642	ENTER;
		643	SAVETMPS;
		644	PUSHMARK (SP);
		645	PUTBACK;
		646	PL_runops = RUNOPS_DEFAULT;
		647	call_pv ("Coro::_do_trace", G_KEEPERR \| G_EVAL \| G_VOID \| G_DISCARD \| G_NOARGS);
		648	PL_runops = old_runops;
		649	SPAGAIN;
		650	FREETMPS;
		651	LEAVE;
		652	PUTBACK;
		653	}
		654	}
		655
		656	static int
		657	runops_coro (pTHX)
		658	{
		659	COP *oldcop = 0;
		660
		661	while ((PL_op = CALL_FPTR (PL_op->op_ppaddr) (aTHX)))
		662	{
		663	PERL_ASYNC_CHECK ();
		664
		665	if (oldcop != PL_curcop)
		666	{
		667	oldcop = PL_curcop;
		668	do_trace (aTHX);
		669	}
		670	}
		671
		672	TAINT_NOT;
		673	return 0;
		674	}
		675
556	/* inject a fake call to Coro::State::_cctx_init into the execution */	676	/* inject a fake call to Coro::State::_cctx_init into the execution */
		677	/* _cctx_init should be careful, as it could be called at almost any time */
		678	/* during execution of a perl program */
557	static void NOINLINE	679	static void NOINLINE
558	prepare_cctx (coro_cctx *cctx)	680	prepare_cctx (pTHX_ coro_cctx *cctx)
559	{	681	{
560	dSP;	682	dSP;
561	LOGOP myop;	683	LOGOP myop;
		684
		685	PL_top_env = &PL_start_env;
		686
		687	if (cctx->flags & CC_TRACE)
		688	PL_runops = runops_coro;
562		689
563	Zero (&myop, 1, LOGOP);	690	Zero (&myop, 1, LOGOP);
564	myop.op_next = PL_op;	691	myop.op_next = PL_op;
565	myop.op_flags = OPf_WANT_VOID \| OPf_STACKED;	692	myop.op_flags = OPf_WANT_VOID \| OPf_STACKED;
566		693
…		…
572	PL_op = (OP *)&myop;	699	PL_op = (OP *)&myop;
573	PL_op = PL_ppaddr[OP_ENTERSUB](aTHX);	700	PL_op = PL_ppaddr[OP_ENTERSUB](aTHX);
574	SPAGAIN;	701	SPAGAIN;
575	}	702	}
576		703
		704	/*
		705	* this is a _very_ stripped down perl interpreter ;)
		706	*/
577	static void	707	static void
578	coro_run (void *arg)	708	coro_run (void *arg)
579	{	709	{
		710	dTHX;
		711
580	/* coro_run is the alternative tail of transfer(), so unlock here. */	712	/* coro_run is the alternative tail of transfer(), so unlock here. */
581	UNLOCK;	713	UNLOCK;
582		714
583	/*	715	/* we now skip the entersub that lead to transfer() */
584	* this is a _very_ stripped down perl interpreter ;)	716	PL_op = PL_op->op_next;
585	*/
586	PL_top_env = &PL_start_env;
587		717
588	/* inject call to cctx_init */	718	/* inject a fake subroutine call to cctx_init */
589	prepare_cctx ((coro_cctx *)arg);	719	prepare_cctx (aTHX_ (coro_cctx *)arg);
590		720
591	/* somebody will hit me for both perl_run and PL_restartop */	721	/* somebody or something will hit me for both perl_run and PL_restartop */
592	PL_restartop = PL_op;	722	PL_restartop = PL_op;
593	perl_run (PL_curinterp);	723	perl_run (PL_curinterp);
594		724
595	fputs ("FATAL: C coroutine fell over the edge of the world, aborting. Did you call exit in a coroutine?\n", stderr);	725	/*
596	abort ();	726	* If perl-run returns we assume exit() was being called or the coro
		727	* fell off the end, which seems to be the only valid (non-bug)
		728	* reason for perl_run to return. We try to exit by jumping to the
		729	* bootstrap-time "top" top_env, as we cannot restore the "main"
		730	* coroutine as Coro has no such concept
		731	*/
		732	PL_top_env = main_top_env;
		733	JMPENV_JUMP (2); /* I do not feel well about the hardcoded 2 at all */
597	}	734	}
598		735
599	static coro_cctx *	736	static coro_cctx *
600	cctx_new ()	737	cctx_new ()
601	{	738	{
602	coro_cctx *cctx;	739	coro_cctx *cctx;
		740	void *stack_start;
		741	size_t stack_size;
603		742
604	++cctx_count;	743	++cctx_count;
605		744
606	Newz (0, cctx, 1, coro_cctx);	745	Newz (0, cctx, 1, coro_cctx);
607		746
608	#if HAVE_MMAP	747	#if HAVE_MMAP
609		748
610	cctx->ssize = ((STACKSIZE * sizeof (long) + PAGESIZE - 1) / PAGESIZE + STACKGUARD) * PAGESIZE;	749	cctx->ssize = ((coro_stacksize * sizeof (long) + PAGESIZE - 1) / PAGESIZE + CORO_STACKGUARD) * PAGESIZE;
611	/* mmap supposedly does allocate-on-write for us */	750	/* mmap supposedly does allocate-on-write for us */
612	cctx->sptr = mmap (0, cctx->ssize, PROT_EXEC\|PROT_READ\|PROT_WRITE, MAP_PRIVATE\|MAP_ANONYMOUS, 0, 0);	751	cctx->sptr = mmap (0, cctx->ssize, PROT_EXEC\|PROT_READ\|PROT_WRITE, MAP_PRIVATE\|MAP_ANONYMOUS, 0, 0);
613		752
614	if (cctx->sptr == (void *)-1)	753	if (cctx->sptr != (void *)-1)
615	{
616	perror ("FATAL: unable to mmap stack for coroutine");
617	_exit (EXIT_FAILURE);
618	}	754	{
619
620	# if STACKGUARD	755	# if CORO_STACKGUARD
621	mprotect (cctx->sptr, STACKGUARD * PAGESIZE, PROT_NONE);	756	mprotect (cctx->sptr, CORO_STACKGUARD * PAGESIZE, PROT_NONE);
622	# endif	757	# endif
		758	stack_start = CORO_STACKGUARD * PAGESIZE + (char *)cctx->sptr;
		759	stack_size = cctx->ssize - CORO_STACKGUARD * PAGESIZE;
		760	cctx->flags \|= CC_MAPPED;
		761	}
		762	else
		763	#endif
		764	{
		765	cctx->ssize = coro_stacksize * (long)sizeof (long);
		766	New (0, cctx->sptr, coro_stacksize, long);
623		767
624	#else
625
626	cctx->ssize = STACKSIZE * (long)sizeof (long);
627	New (0, cctx->sptr, STACKSIZE, long);
628
629	if (!cctx->sptr)	768	if (!cctx->sptr)
630	{	769	{
631	perror ("FATAL: unable to malloc stack for coroutine");	770	perror ("FATAL: unable to allocate stack for coroutine");
632	_exit (EXIT_FAILURE);	771	_exit (EXIT_FAILURE);
633	}	772	}
634		773
635	#endif	774	stack_start = cctx->sptr;
		775	stack_size = cctx->ssize;
		776	}
636		777
637	#if USE_VALGRIND	778	REGISTER_STACK (cctx, (char )stack_start, (char )stack_start + stack_size);
638	cctx->valgrind_id = VALGRIND_STACK_REGISTER (
639	STACKGUARD * PAGESIZE + (char *)cctx->sptr,
640	cctx->ssize + (char *)cctx->sptr
641	);
642	#endif
643
644	coro_create (&cctx->cctx, coro_run, (void *)cctx, cctx->sptr, cctx->ssize);	779	coro_create (&cctx->cctx, coro_run, (void *)cctx, stack_start, stack_size);
645		780
646	return cctx;	781	return cctx;
647	}	782	}
648		783
649	static void	784	static void
…		…
652	if (!cctx)	787	if (!cctx)
653	return;	788	return;
654		789
655	--cctx_count;	790	--cctx_count;
656		791
657	#if USE_VALGRIND	792	#if CORO_USE_VALGRIND
658	VALGRIND_STACK_DEREGISTER (cctx->valgrind_id);	793	VALGRIND_STACK_DEREGISTER (cctx->valgrind_id);
659	#endif	794	#endif
660		795
661	#if HAVE_MMAP	796	#if HAVE_MMAP
		797	if (cctx->flags & CC_MAPPED)
662	munmap (cctx->sptr, cctx->ssize);	798	munmap (cctx->sptr, cctx->ssize);
663	#else	799	else
		800	#endif
664	Safefree (cctx->sptr);	801	Safefree (cctx->sptr);
665	#endif
666		802
667	Safefree (cctx);	803	Safefree (cctx);
668	}	804	}
669		805
670	static coro_cctx *	806	static coro_cctx *
671	cctx_get ()	807	cctx_get (pTHX)
672	{	808	{
673	coro_cctx *cctx;
674
675	if (cctx_first)	809	while (cctx_first)
676	{	810	{
677	cctx = cctx_first;	811	coro_cctx *cctx = cctx_first;
678	cctx_first = cctx->next;	812	cctx_first = cctx->next;
679	--cctx_idle;	813	--cctx_idle;
680	}	814
681	else	815	if (cctx->ssize >= coro_stacksize && !(cctx->flags & CC_NOREUSE))
682	{	816	return cctx;
683	cctx = cctx_new ();	817
684	PL_op = PL_op->op_next;	818	cctx_destroy (cctx);
685	}	819	}
686		820
687	return cctx;	821	return cctx_new ();
688	}	822	}
689		823
690	static void	824	static void
691	cctx_put (coro_cctx *cctx)	825	cctx_put (coro_cctx *cctx)
692	{	826	{
…		…
695	{	829	{
696	coro_cctx *first = cctx_first;	830	coro_cctx *first = cctx_first;
697	cctx_first = first->next;	831	cctx_first = first->next;
698	--cctx_idle;	832	--cctx_idle;
699		833
700	assert (!first->inuse);
701	cctx_destroy (first);	834	cctx_destroy (first);
702	}	835	}
703		836
704	++cctx_idle;	837	++cctx_idle;
705	cctx->next = cctx_first;	838	cctx->next = cctx_first;
706	cctx_first = cctx;	839	cctx_first = cctx;
707	}	840	}
708		841
		842	/ coroutine switching ***************************************************/
		843
709	/* never call directly, always through the coro_state_transfer global variable */	844	/* never call directly, always through the coro_state_transfer global variable */
710	static void NOINLINE	845	static void NOINLINE
711	transfer (struct coro prev, struct coro next)	846	transfer (pTHX_ struct coro prev, struct coro next)
712	{	847	{
713	dSTACKLEVEL;	848	dSTACKLEVEL;
714		849
715	/* sometimes transfer is only called to set idle_sp */	850	/* sometimes transfer is only called to set idle_sp */
716	if (!next)	851	if (!next)
…		…
724		859
725	if (prev->flags & CF_NEW)	860	if (prev->flags & CF_NEW)
726	{	861	{
727	/* create a new empty context */	862	/* create a new empty context */
728	Newz (0, prev->cctx, 1, coro_cctx);	863	Newz (0, prev->cctx, 1, coro_cctx);
729	prev->cctx->inuse = 1;
730	prev->flags &= ~CF_NEW;	864	prev->flags &= ~CF_NEW;
731	prev->flags \|= CF_RUNNING;	865	prev->flags \|= CF_RUNNING;
732	}	866	}
733		867
734	/TODO: must not croak here /	868	/TODO: must not croak here /
…		…
749	if (next->flags & CF_NEW)	883	if (next->flags & CF_NEW)
750	{	884	{
751	/* need to start coroutine */	885	/* need to start coroutine */
752	next->flags &= ~CF_NEW;	886	next->flags &= ~CF_NEW;
753	/* first get rid of the old state */	887	/* first get rid of the old state */
754	save_perl (prev);	888	save_perl (aTHX_ prev);
755	/* setup coroutine call */	889	/* setup coroutine call */
756	setup_coro (next);	890	setup_coro (aTHX_ next);
757	/* need a new stack */
758	assert (!next->cctx);
759	}	891	}
760	else	892	else
761	{	893	{
762	/* coroutine already started */	894	/* coroutine already started */
763	save_perl (prev);	895	save_perl (aTHX_ prev);
764	load_perl (next);	896	load_perl (aTHX_ next);
765	}	897	}
766		898
767	prev__cctx = prev->cctx;	899	prev__cctx = prev->cctx;
768		900
769	/* possibly "free" the cctx */	901	/* possibly "free" the cctx */
…		…
773	assert (("ERROR: current top_env must equal previous top_env", PL_top_env == prev__cctx->idle_te));	905	assert (("ERROR: current top_env must equal previous top_env", PL_top_env == prev__cctx->idle_te));
774		906
775	prev->cctx = 0;	907	prev->cctx = 0;
776		908
777	cctx_put (prev__cctx);	909	cctx_put (prev__cctx);
778	prev__cctx->inuse = 0;
779	}	910	}
780		911
781	if (!next->cctx)	912	if (!next->cctx)
782	{
783	next->cctx = cctx_get ();	913	next->cctx = cctx_get (aTHX);
784	assert (!next->cctx->inuse);
785	next->cctx->inuse = 1;
786	}
787		914
788	if (prev__cctx != next->cctx)	915	if (prev__cctx != next->cctx)
789	{	916	{
790	prev__cctx->top_env = PL_top_env;	917	prev__cctx->top_env = PL_top_env;
791	PL_top_env = next->cctx->top_env;	918	PL_top_env = next->cctx->top_env;
792	coro_transfer (&prev__cctx->cctx, &next->cctx->cctx);	919	coro_transfer (&prev__cctx->cctx, &next->cctx->cctx);
793	}	920	}
794		921
795	free_coro_mortal ();	922	free_coro_mortal (aTHX);
796	UNLOCK;	923	UNLOCK;
797	}	924	}
798	}	925	}
799		926
800	struct transfer_args	927	struct transfer_args
801	{	928	{
802	struct coro prev, next;	929	struct coro prev, next;
803	};	930	};
804		931
805	#define TRANSFER(ta) transfer ((ta).prev, (ta).next)	932	#define TRANSFER(ta) transfer (aTHX_ (ta).prev, (ta).next)
		933
		934	/ high level stuff ******************************************************/
806		935
807	static int	936	static int
808	coro_state_destroy (struct coro *coro)	937	coro_state_destroy (pTHX_ struct coro *coro)
809	{	938	{
810	if (coro->flags & CF_DESTROYED)	939	if (coro->flags & CF_DESTROYED)
811	return 0;	940	return 0;
812		941
813	coro->flags \|= CF_DESTROYED;	942	coro->flags \|= CF_DESTROYED;
		943
		944	if (coro->flags & CF_READY)
		945	{
		946	/* reduce nready, as destroying a ready coro effectively unreadies it */
		947	/* alternative: look through all ready queues and remove the coro */
		948	LOCK;
		949	--coro_nready;
		950	UNLOCK;
		951	}
		952	else
		953	coro->flags \|= CF_READY; /* make sure it is NOT put into the readyqueue */
814		954
815	if (coro->mainstack && coro->mainstack != main_mainstack)	955	if (coro->mainstack && coro->mainstack != main_mainstack)
816	{	956	{
		957	struct coro temp;
		958
817	assert (!(coro->flags & CF_RUNNING));	959	assert (!(coro->flags & CF_RUNNING));
818		960
819	struct coro temp;
820	Zero (&temp, 1, struct coro);	961	Zero (&temp, 1, struct coro);
821	temp.save = CORO_SAVE_ALL;	962	temp.save = CORO_SAVE_ALL;
822		963
823	if (coro->flags & CF_RUNNING)	964	if (coro->flags & CF_RUNNING)
824	croak ("FATAL: tried to destroy currently running coroutine");	965	croak ("FATAL: tried to destroy currently running coroutine");
825		966
826	save_perl (&temp);	967	save_perl (aTHX_ &temp);
827	load_perl (coro);	968	load_perl (aTHX_ coro);
828		969
829	coro_destroy_stacks ();	970	coro_destroy_stacks (aTHX);
830		971
831	load_perl (&temp); /* this will get rid of defsv etc.. */	972	load_perl (aTHX_ &temp); /* this will get rid of defsv etc.. */
832		973
833	coro->mainstack = 0;	974	coro->mainstack = 0;
834	}	975	}
835		976
836	cctx_destroy (coro->cctx);	977	cctx_destroy (coro->cctx);
837	SvREFCNT_dec (coro->args);	978	SvREFCNT_dec (coro->args);
838		979
		980	if (coro->next) coro->next->prev = coro->prev;
		981	if (coro->prev) coro->prev->next = coro->next;
		982	if (coro == coro_first) coro_first = coro->next;
		983
839	return 1;	984	return 1;
840	}	985	}
841		986
842	static int	987	static int
843	coro_state_free (pTHX_ SV sv, MAGIC mg)	988	coro_state_free (pTHX_ SV sv, MAGIC mg)
844	{	989	{
845	struct coro coro = (struct coro )mg->mg_ptr;	990	struct coro coro = (struct coro )mg->mg_ptr;
846	mg->mg_ptr = 0;	991	mg->mg_ptr = 0;
847		992
		993	coro->hv = 0;
		994
848	if (--coro->refcnt < 0)	995	if (--coro->refcnt < 0)
849	{	996	{
850	coro_state_destroy (coro);	997	coro_state_destroy (aTHX_ coro);
851	Safefree (coro);	998	Safefree (coro);
852	}	999	}
853		1000
854	return 0;	1001	return 0;
855	}	1002	}
…		…
874	# define MGf_DUP 0	1021	# define MGf_DUP 0
875	#endif	1022	#endif
876	};	1023	};
877		1024
878	static struct coro *	1025	static struct coro *
879	SvSTATE (SV *coro)	1026	SvSTATE_ (pTHX_ SV *coro)
880	{	1027	{
881	HV *stash;	1028	HV *stash;
882	MAGIC *mg;	1029	MAGIC *mg;
883		1030
884	if (SvROK (coro))	1031	if (SvROK (coro))
…		…
890	/* very slow, but rare, check */	1037	/* very slow, but rare, check */
891	if (!sv_derived_from (sv_2mortal (newRV_inc (coro)), "Coro::State"))	1038	if (!sv_derived_from (sv_2mortal (newRV_inc (coro)), "Coro::State"))
892	croak ("Coro::State object required");	1039	croak ("Coro::State object required");
893	}	1040	}
894		1041
895	mg = SvMAGIC (coro);	1042	mg = CORO_MAGIC (coro);
896	assert (mg->mg_type == PERL_MAGIC_ext);
897	return (struct coro *)mg->mg_ptr;	1043	return (struct coro *)mg->mg_ptr;
898	}	1044	}
899		1045
		1046	#define SvSTATE(sv) SvSTATE_ (aTHX_ (sv))
		1047
900	static void	1048	static void
901	prepare_transfer (struct transfer_args ta, SV prev_sv, SV *next_sv)	1049	prepare_transfer (pTHX_ struct transfer_args ta, SV prev_sv, SV *next_sv)
902	{	1050	{
903	ta->prev = SvSTATE (prev_sv);	1051	ta->prev = SvSTATE (prev_sv);
904	ta->next = SvSTATE (next_sv);	1052	ta->next = SvSTATE (next_sv);
905	}	1053	}
906		1054
907	static void	1055	static void
908	api_transfer (SV prev_sv, SV next_sv)	1056	api_transfer (SV prev_sv, SV next_sv)
909	{	1057	{
		1058	dTHX;
910	struct transfer_args ta;	1059	struct transfer_args ta;
911		1060
912	prepare_transfer (&ta, prev_sv, next_sv);	1061	prepare_transfer (aTHX_ &ta, prev_sv, next_sv);
913	TRANSFER (ta);	1062	TRANSFER (ta);
914	}	1063	}
915		1064
916	static int	1065	static int
917	api_save (SV *coro_sv, int new_save)	1066	api_save (SV *coro_sv, int new_save)
918	{	1067	{
		1068	dTHX;
919	struct coro *coro = SvSTATE (coro_sv);	1069	struct coro *coro = SvSTATE (coro_sv);
920	int old_save = coro->save;	1070	int old_save = coro->save;
921		1071
922	if (new_save >= 0)	1072	if (new_save >= 0)
923	coro->save = new_save;	1073	coro->save = new_save;
…		…
925	return old_save;	1075	return old_save;
926	}	1076	}
927		1077
928	/ Coro ******************************************************************/	1078	/ Coro ******************************************************************/
929		1079
930	#define PRIO_MAX 3
931	#define PRIO_HIGH 1
932	#define PRIO_NORMAL 0
933	#define PRIO_LOW -1
934	#define PRIO_IDLE -3
935	#define PRIO_MIN -4
936
937	/* for Coro.pm */
938	static SV *coro_current;
939	static AV *coro_ready [PRIO_MAX-PRIO_MIN+1];
940	static int coro_nready;
941
942	static void	1080	static void
943	coro_enq (SV *coro_sv)	1081	coro_enq (pTHX_ SV *coro_sv)
944	{	1082	{
945	av_push (coro_ready [SvSTATE (coro_sv)->prio - PRIO_MIN], coro_sv);	1083	av_push (coro_ready [SvSTATE (coro_sv)->prio - PRIO_MIN], coro_sv);
946	coro_nready++;
947	}	1084	}
948		1085
949	static SV *	1086	static SV *
950	coro_deq (int min_prio)	1087	coro_deq (pTHX_ int min_prio)
951	{	1088	{
952	int prio = PRIO_MAX - PRIO_MIN;	1089	int prio = PRIO_MAX - PRIO_MIN;
953		1090
954	min_prio -= PRIO_MIN;	1091	min_prio -= PRIO_MIN;
955	if (min_prio < 0)	1092	if (min_prio < 0)
956	min_prio = 0;	1093	min_prio = 0;
957		1094
958	for (prio = PRIO_MAX - PRIO_MIN + 1; --prio >= min_prio; )	1095	for (prio = PRIO_MAX - PRIO_MIN + 1; --prio >= min_prio; )
959	if (AvFILLp (coro_ready [prio]) >= 0)	1096	if (AvFILLp (coro_ready [prio]) >= 0)
960	{
961	coro_nready--;
962	return av_shift (coro_ready [prio]);	1097	return av_shift (coro_ready [prio]);
963	}
964		1098
965	return 0;	1099	return 0;
966	}	1100	}
967		1101
968	static int	1102	static int
969	api_ready (SV *coro_sv)	1103	api_ready (SV *coro_sv)
970	{	1104	{
		1105	dTHX;
971	struct coro *coro;	1106	struct coro *coro;
972		1107
973	if (SvROK (coro_sv))	1108	if (SvROK (coro_sv))
974	coro_sv = SvRV (coro_sv);	1109	coro_sv = SvRV (coro_sv);
975		1110
…		…
979	return 0;	1114	return 0;
980		1115
981	coro->flags \|= CF_READY;	1116	coro->flags \|= CF_READY;
982		1117
983	LOCK;	1118	LOCK;
984	coro_enq (SvREFCNT_inc (coro_sv));	1119	coro_enq (aTHX_ SvREFCNT_inc (coro_sv));
		1120	++coro_nready;
985	UNLOCK;	1121	UNLOCK;
986		1122
987	return 1;	1123	return 1;
988	}	1124	}
989		1125
990	static int	1126	static int
991	api_is_ready (SV *coro_sv)	1127	api_is_ready (SV *coro_sv)
992	{	1128	{
		1129	dTHX;
993	return !!(SvSTATE (coro_sv)->flags & CF_READY);	1130	return !!(SvSTATE (coro_sv)->flags & CF_READY);
994	}	1131	}
995		1132
996	static void	1133	static void
997	prepare_schedule (struct transfer_args *ta)	1134	prepare_schedule (pTHX_ struct transfer_args *ta)
998	{	1135	{
999	SV prev_sv, next_sv;	1136	SV prev_sv, next_sv;
1000		1137
1001	for (;;)	1138	for (;;)
1002	{	1139	{
1003	LOCK;	1140	LOCK;
1004	next_sv = coro_deq (PRIO_MIN);	1141	next_sv = coro_deq (aTHX_ PRIO_MIN);
1005	UNLOCK;
1006		1142
1007	/* nothing to schedule: call the idle handler */	1143	/* nothing to schedule: call the idle handler */
1008	if (!next_sv)	1144	if (!next_sv)
1009	{	1145	{
1010	dSP;	1146	dSP;
		1147	UNLOCK;
1011		1148
1012	ENTER;	1149	ENTER;
1013	SAVETMPS;	1150	SAVETMPS;
1014		1151
1015	PUSHMARK (SP);	1152	PUSHMARK (SP);
…		…
1024	ta->next = SvSTATE (next_sv);	1161	ta->next = SvSTATE (next_sv);
1025		1162
1026	/* cannot transfer to destroyed coros, skip and look for next */	1163	/* cannot transfer to destroyed coros, skip and look for next */
1027	if (ta->next->flags & CF_DESTROYED)	1164	if (ta->next->flags & CF_DESTROYED)
1028	{	1165	{
		1166	UNLOCK;
1029	SvREFCNT_dec (next_sv);	1167	SvREFCNT_dec (next_sv);
		1168	/* coro_nready is already taken care of by destroy */
1030	continue;	1169	continue;
1031	}	1170	}
1032		1171
		1172	--coro_nready;
		1173	UNLOCK;
1033	break;	1174	break;
1034	}	1175	}
1035		1176
1036	/* free this only after the transfer */	1177	/* free this only after the transfer */
1037	prev_sv = SvRV (coro_current);	1178	prev_sv = SvRV (coro_current);
…		…
1040		1181
1041	assert (ta->next->flags & CF_READY);	1182	assert (ta->next->flags & CF_READY);
1042	ta->next->flags &= ~CF_READY;	1183	ta->next->flags &= ~CF_READY;
1043		1184
1044	LOCK;	1185	LOCK;
1045	free_coro_mortal ();	1186	free_coro_mortal (aTHX);
1046	coro_mortal = prev_sv;	1187	coro_mortal = prev_sv;
1047	UNLOCK;	1188	UNLOCK;
1048	}	1189	}
1049		1190
1050	static void	1191	static void
1051	prepare_cede (struct transfer_args *ta)	1192	prepare_cede (pTHX_ struct transfer_args *ta)
1052	{	1193	{
1053	api_ready (coro_current);	1194	api_ready (coro_current);
1054	prepare_schedule (ta);	1195	prepare_schedule (aTHX_ ta);
1055	}	1196	}
1056		1197
1057	static int	1198	static int
1058	prepare_cede_notself (struct transfer_args *ta)	1199	prepare_cede_notself (pTHX_ struct transfer_args *ta)
1059	{	1200	{
1060	if (coro_nready)	1201	if (coro_nready)
1061	{	1202	{
1062	SV *prev = SvRV (coro_current);	1203	SV *prev = SvRV (coro_current);
1063	prepare_schedule (ta);	1204	prepare_schedule (aTHX_ ta);
1064	api_ready (prev);	1205	api_ready (prev);
1065	return 1;	1206	return 1;
1066	}	1207	}
1067	else	1208	else
1068	return 0;	1209	return 0;
1069	}	1210	}
1070		1211
1071	static void	1212	static void
1072	api_schedule (void)	1213	api_schedule (void)
1073	{	1214	{
		1215	dTHX;
1074	struct transfer_args ta;	1216	struct transfer_args ta;
1075		1217
1076	prepare_schedule (&ta);	1218	prepare_schedule (aTHX_ &ta);
1077	TRANSFER (ta);	1219	TRANSFER (ta);
1078	}	1220	}
1079		1221
1080	static int	1222	static int
1081	api_cede (void)	1223	api_cede (void)
1082	{	1224	{
		1225	dTHX;
1083	struct transfer_args ta;	1226	struct transfer_args ta;
1084		1227
1085	prepare_cede (&ta);	1228	prepare_cede (aTHX_ &ta);
1086		1229
1087	if (ta.prev != ta.next)	1230	if (ta.prev != ta.next)
1088	{	1231	{
1089	TRANSFER (ta);	1232	TRANSFER (ta);
1090	return 1;	1233	return 1;
…		…
1094	}	1237	}
1095		1238
1096	static int	1239	static int
1097	api_cede_notself (void)	1240	api_cede_notself (void)
1098	{	1241	{
		1242	dTHX;
1099	struct transfer_args ta;	1243	struct transfer_args ta;
1100		1244
1101	if (prepare_cede_notself (&ta))	1245	if (prepare_cede_notself (aTHX_ &ta))
1102	{	1246	{
1103	TRANSFER (ta);	1247	TRANSFER (ta);
1104	return 1;	1248	return 1;
1105	}	1249	}
1106	else	1250	else
…		…
1122		1266
1123	newCONSTSUB (coro_state_stash, "SAVE_DEFAV", newSViv (CORO_SAVE_DEFAV));	1267	newCONSTSUB (coro_state_stash, "SAVE_DEFAV", newSViv (CORO_SAVE_DEFAV));
1124	newCONSTSUB (coro_state_stash, "SAVE_DEFSV", newSViv (CORO_SAVE_DEFSV));	1268	newCONSTSUB (coro_state_stash, "SAVE_DEFSV", newSViv (CORO_SAVE_DEFSV));
1125	newCONSTSUB (coro_state_stash, "SAVE_ERRSV", newSViv (CORO_SAVE_ERRSV));	1269	newCONSTSUB (coro_state_stash, "SAVE_ERRSV", newSViv (CORO_SAVE_ERRSV));
1126	newCONSTSUB (coro_state_stash, "SAVE_IRSSV", newSViv (CORO_SAVE_IRSSV));	1270	newCONSTSUB (coro_state_stash, "SAVE_IRSSV", newSViv (CORO_SAVE_IRSSV));
		1271	newCONSTSUB (coro_state_stash, "SAVE_DEFFH", newSViv (CORO_SAVE_DEFFH));
		1272	newCONSTSUB (coro_state_stash, "SAVE_DEF", newSViv (CORO_SAVE_DEF));
1127	newCONSTSUB (coro_state_stash, "SAVE_ALL", newSViv (CORO_SAVE_ALL));	1273	newCONSTSUB (coro_state_stash, "SAVE_ALL", newSViv (CORO_SAVE_ALL));
1128		1274
1129	main_mainstack = PL_mainstack;	1275	main_mainstack = PL_mainstack;
		1276	main_top_env = PL_top_env;
		1277
		1278	while (main_top_env->je_prev)
		1279	main_top_env = main_top_env->je_prev;
1130		1280
1131	coroapi.ver = CORO_API_VERSION;	1281	coroapi.ver = CORO_API_VERSION;
1132	coroapi.transfer = api_transfer;	1282	coroapi.transfer = api_transfer;
1133		1283
1134	assert (("PRIO_NORMAL must be 0", !PRIO_NORMAL));	1284	assert (("PRIO_NORMAL must be 0", !PRIO_NORMAL));
…		…
1142	HV *hv;	1292	HV *hv;
1143	int i;	1293	int i;
1144		1294
1145	Newz (0, coro, 1, struct coro);	1295	Newz (0, coro, 1, struct coro);
1146	coro->args = newAV ();	1296	coro->args = newAV ();
1147	coro->save = CORO_SAVE_ALL;	1297	coro->save = CORO_SAVE_DEF;
1148	coro->flags = CF_NEW;	1298	coro->flags = CF_NEW;
1149		1299
		1300	if (coro_first) coro_first->prev = coro;
		1301	coro->next = coro_first;
		1302	coro_first = coro;
		1303
1150	hv = newHV ();	1304	coro->hv = hv = newHV ();
1151	sv_magicext ((SV )hv, 0, PERL_MAGIC_ext, &coro_state_vtbl, (char )coro, 0)->mg_flags \|= MGf_DUP;	1305	sv_magicext ((SV )hv, 0, PERL_MAGIC_ext, &coro_state_vtbl, (char )coro, 0)->mg_flags \|= MGf_DUP;
1152	RETVAL = sv_bless (newRV_noinc ((SV *)hv), gv_stashpv (klass, 1));	1306	RETVAL = sv_bless (newRV_noinc ((SV *)hv), gv_stashpv (klass, 1));
1153		1307
1154	for (i = 1; i < items; i++)	1308	for (i = 1; i < items; i++)
1155	av_push (coro->args, newSVsv (ST (i)));	1309	av_push (coro->args, newSVsv (ST (i)));
…		…
1159		1313
1160	int	1314	int
1161	save (SV *coro, int new_save = -1)	1315	save (SV *coro, int new_save = -1)
1162	CODE:	1316	CODE:
1163	RETVAL = api_save (coro, new_save);	1317	RETVAL = api_save (coro, new_save);
		1318	OUTPUT:
		1319	RETVAL
		1320
		1321	int
		1322	save_also (SV *coro_sv, int save_also)
		1323	CODE:
		1324	{
		1325	struct coro *coro = SvSTATE (coro_sv);
		1326	RETVAL = coro->save;
		1327	coro->save \|= save_also;
		1328	}
1164	OUTPUT:	1329	OUTPUT:
1165	RETVAL	1330	RETVAL
1166		1331
1167	void	1332	void
1168	_set_stacklevel (...)	1333	_set_stacklevel (...)
…		…
1184		1349
1185	case 1:	1350	case 1:
1186	if (items != 2)	1351	if (items != 2)
1187	croak ("Coro::State::transfer (prev,next) expects two arguments, not %d", items);	1352	croak ("Coro::State::transfer (prev,next) expects two arguments, not %d", items);
1188		1353
1189	prepare_transfer (&ta, ST (0), ST (1));	1354	prepare_transfer (aTHX_ &ta, ST (0), ST (1));
1190	break;	1355	break;
1191		1356
1192	case 2:	1357	case 2:
1193	prepare_schedule (&ta);	1358	prepare_schedule (aTHX_ &ta);
1194	break;	1359	break;
1195		1360
1196	case 3:	1361	case 3:
1197	prepare_cede (&ta);	1362	prepare_cede (aTHX_ &ta);
1198	break;	1363	break;
1199		1364
1200	case 4:	1365	case 4:
1201	if (!prepare_cede_notself (&ta))	1366	if (!prepare_cede_notself (aTHX_ &ta))
1202	XSRETURN_EMPTY;	1367	XSRETURN_EMPTY;
1203		1368
1204	break;	1369	break;
1205	}	1370	}
1206		1371
…		…
1212	}	1377	}
1213		1378
1214	bool	1379	bool
1215	_destroy (SV *coro_sv)	1380	_destroy (SV *coro_sv)
1216	CODE:	1381	CODE:
1217	RETVAL = coro_state_destroy (SvSTATE (coro_sv));	1382	RETVAL = coro_state_destroy (aTHX_ SvSTATE (coro_sv));
1218	OUTPUT:	1383	OUTPUT:
1219	RETVAL	1384	RETVAL
1220		1385
1221	void	1386	void
1222	_exit (code)	1387	_exit (code)
…		…
1224	PROTOTYPE: $	1389	PROTOTYPE: $
1225	CODE:	1390	CODE:
1226	_exit (code);	1391	_exit (code);
1227		1392
1228	int	1393	int
		1394	cctx_stacksize (int new_stacksize = 0)
		1395	CODE:
		1396	RETVAL = coro_stacksize;
		1397	if (new_stacksize)
		1398	coro_stacksize = new_stacksize;
		1399	OUTPUT:
		1400	RETVAL
		1401
		1402	int
1229	cctx_count ()	1403	cctx_count ()
1230	CODE:	1404	CODE:
1231	RETVAL = cctx_count;	1405	RETVAL = cctx_count;
1232	OUTPUT:	1406	OUTPUT:
1233	RETVAL	1407	RETVAL
…		…
1237	CODE:	1411	CODE:
1238	RETVAL = cctx_idle;	1412	RETVAL = cctx_idle;
1239	OUTPUT:	1413	OUTPUT:
1240	RETVAL	1414	RETVAL
1241		1415
		1416	void
		1417	list ()
		1418	PPCODE:
		1419	{
		1420	struct coro *coro;
		1421	for (coro = coro_first; coro; coro = coro->next)
		1422	if (coro->hv)
		1423	XPUSHs (sv_2mortal (newRV_inc ((SV *)coro->hv)));
		1424	}
		1425
		1426	void
		1427	call (Coro::State coro, SV *coderef)
		1428	ALIAS:
		1429	eval = 1
		1430	CODE:
		1431	{
		1432	if (coro->mainstack)
		1433	{
		1434	struct coro temp;
		1435	Zero (&temp, 1, struct coro);
		1436	temp.save = CORO_SAVE_ALL;
		1437
		1438	if (!(coro->flags & CF_RUNNING))
		1439	{
		1440	save_perl (aTHX_ &temp);
		1441	load_perl (aTHX_ coro);
		1442	}
		1443
		1444	{
		1445	dSP;
		1446	ENTER;
		1447	SAVETMPS;
		1448	PUSHMARK (SP);
		1449	PUTBACK;
		1450	if (ix)
		1451	eval_sv (coderef, 0);
		1452	else
		1453	call_sv (coderef, G_KEEPERR \| G_EVAL \| G_VOID \| G_DISCARD);
		1454	SPAGAIN;
		1455	FREETMPS;
		1456	LEAVE;
		1457	PUTBACK;
		1458	}
		1459
		1460	if (!(coro->flags & CF_RUNNING))
		1461	{
		1462	save_perl (aTHX_ coro);
		1463	load_perl (aTHX_ &temp);
		1464	}
		1465	}
		1466	}
		1467
		1468	SV *
		1469	is_ready (Coro::State coro)
		1470	PROTOTYPE: $
		1471	ALIAS:
		1472	is_ready = CF_READY
		1473	is_running = CF_RUNNING
		1474	is_new = CF_NEW
		1475	is_destroyed = CF_DESTROYED
		1476	CODE:
		1477	RETVAL = boolSV (coro->flags & ix);
		1478	OUTPUT:
		1479	RETVAL
		1480
		1481	void
		1482	trace (Coro::State coro, int enable = 0)
		1483	CODE:
		1484	if (enable)
		1485	{
		1486	if (coro->flags & CF_RUNNING)
		1487	croak ("cannot enable tracing on running coroutine");
		1488
		1489	if (coro->cctx)
		1490	croak ("cannot enable tracing on coroutine with custom stack");
		1491
		1492	coro->cctx = cctx_new ();
		1493	coro->cctx->flags \|= CC_TRACE;
		1494	}
		1495	else
		1496	if (coro->cctx && coro->cctx->flags & CC_TRACE)
		1497	{
		1498	coro->cctx->flags &= ~CC_TRACE;
		1499	coro->cctx->flags \|= CC_NOREUSE;
		1500	}
		1501
		1502	SV *
		1503	has_stack (Coro::State coro)
		1504	PROTOTYPE: $
		1505	CODE:
		1506	RETVAL = boolSV (!!coro->cctx);
		1507	OUTPUT:
		1508	RETVAL
		1509
		1510	IV
		1511	rss (Coro::State coro)
		1512	PROTOTYPE: $
		1513	CODE:
		1514	RETVAL = coro_rss (coro);
		1515	OUTPUT:
		1516	RETVAL
		1517
		1518
1242	MODULE = Coro::State PACKAGE = Coro	1519	MODULE = Coro::State PACKAGE = Coro
1243		1520
1244	BOOT:	1521	BOOT:
1245	{	1522	{
1246	int i;	1523	int i;
		1524
		1525	sv_pool_rss = get_sv ("Coro::POOL_RSS" , TRUE);
		1526	sv_pool_size = get_sv ("Coro::POOL_SIZE" , TRUE);
		1527	av_async_pool = get_av ("Coro::async_pool", TRUE);
		1528
		1529	coro_current = get_sv ("Coro::current", FALSE);
		1530	SvREADONLY_on (coro_current);
1247		1531
1248	coro_stash = gv_stashpv ("Coro", TRUE);	1532	coro_stash = gv_stashpv ("Coro", TRUE);
1249		1533
1250	newCONSTSUB (coro_stash, "PRIO_MAX", newSViv (PRIO_MAX));	1534	newCONSTSUB (coro_stash, "PRIO_MAX", newSViv (PRIO_MAX));
1251	newCONSTSUB (coro_stash, "PRIO_HIGH", newSViv (PRIO_HIGH));	1535	newCONSTSUB (coro_stash, "PRIO_HIGH", newSViv (PRIO_HIGH));
1252	newCONSTSUB (coro_stash, "PRIO_NORMAL", newSViv (PRIO_NORMAL));	1536	newCONSTSUB (coro_stash, "PRIO_NORMAL", newSViv (PRIO_NORMAL));
1253	newCONSTSUB (coro_stash, "PRIO_LOW", newSViv (PRIO_LOW));	1537	newCONSTSUB (coro_stash, "PRIO_LOW", newSViv (PRIO_LOW));
1254	newCONSTSUB (coro_stash, "PRIO_IDLE", newSViv (PRIO_IDLE));	1538	newCONSTSUB (coro_stash, "PRIO_IDLE", newSViv (PRIO_IDLE));
1255	newCONSTSUB (coro_stash, "PRIO_MIN", newSViv (PRIO_MIN));	1539	newCONSTSUB (coro_stash, "PRIO_MIN", newSViv (PRIO_MIN));
1256
1257	coro_current = get_sv ("Coro::current", FALSE);
1258	SvREADONLY_on (coro_current);
1259		1540
1260	for (i = PRIO_MAX - PRIO_MIN + 1; i--; )	1541	for (i = PRIO_MAX - PRIO_MIN + 1; i--; )
1261	coro_ready[i] = newAV ();	1542	coro_ready[i] = newAV ();
1262		1543
1263	{	1544	{
…		…
1313	CODE:	1594	CODE:
1314	RETVAL = boolSV (api_ready (self));	1595	RETVAL = boolSV (api_ready (self));
1315	OUTPUT:	1596	OUTPUT:
1316	RETVAL	1597	RETVAL
1317		1598
1318	SV *
1319	is_ready (SV *self)
1320	PROTOTYPE: $
1321	CODE:
1322	RETVAL = boolSV (api_is_ready (self));
1323	OUTPUT:
1324	RETVAL
1325
1326	int	1599	int
1327	nready (...)	1600	nready (...)
1328	PROTOTYPE:	1601	PROTOTYPE:
1329	CODE:	1602	CODE:
1330	RETVAL = coro_nready;	1603	RETVAL = coro_nready;
1331	OUTPUT:	1604	OUTPUT:
1332	RETVAL	1605	RETVAL
1333		1606
		1607	# for async_pool speedup
		1608	void
		1609	_pool_1 (SV *cb)
		1610	CODE:
		1611	{
		1612	int i, len;
		1613	HV hv = (HV )SvRV (coro_current);
		1614	AV *defav = GvAV (PL_defgv);
		1615	SV *invoke = hv_delete (hv, "_invoke", sizeof ("_invoke") - 1, 0);
		1616	AV *invoke_av;
		1617
		1618	if (!invoke)
		1619	croak ("\3terminate\2\n");
		1620
		1621	hv_store (hv, "desc", sizeof ("desc") - 1,
		1622	newSVpvn ("[async_pool]", sizeof ("[async_pool]") - 1), 0);
		1623
		1624	invoke_av = (AV *)SvRV (invoke);
		1625	len = av_len (invoke_av);
		1626
		1627	sv_setsv (cb, AvARRAY (invoke_av)[0]);
		1628
		1629	if (len > 0)
		1630	{
		1631	av_fill (defav, len - 1);
		1632	for (i = 0; i < len; ++i)
		1633	av_store (defav, i, SvREFCNT_inc (AvARRAY (invoke_av)[i + 1]));
		1634	}
		1635
		1636	SvREFCNT_dec (invoke);
		1637	}
		1638
		1639	void
		1640	_pool_2 (SV *cb)
		1641	CODE:
		1642	{
		1643	struct coro *coro = SvSTATE (coro_current);
		1644
		1645	sv_setsv (cb, &PL_sv_undef);
		1646
		1647	if (coro_rss (coro) > SvIV (sv_pool_rss)
		1648	\|\| av_len (av_async_pool) + 1 >= SvIV (sv_pool_size))
		1649	croak ("\3terminate\2\n");
		1650
		1651	av_clear (GvAV (PL_defgv));
		1652	hv_store ((HV *)SvRV (coro_current), "desc", sizeof ("desc") - 1,
		1653	newSVpvn ("[async_pool idle]", sizeof ("[async_pool idle]") - 1), 0);
		1654	coro->save = CORO_SAVE_DEF;
		1655	coro->prio = 0;
		1656	av_push (av_async_pool, newSVsv (coro_current));
		1657	}
		1658
		1659
1334	MODULE = Coro::State PACKAGE = Coro::AIO	1660	MODULE = Coro::State PACKAGE = Coro::AIO
1335		1661
1336	SV *	1662	SV *
1337	_get_state ()	1663	_get_state ()
1338	CODE:	1664	CODE:

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Comparing Coro/Coro/State.xs (file contents): Revision 1.135 by root, Fri Jan 5 18:25:51 2007 UTC vs. Revision 1.165 by root, Wed Sep 26 19:26:48 2007 UTC

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Comparing Coro/Coro/State.xs (file contents):
Revision 1.135 by root, Fri Jan 5 18:25:51 2007 UTC vs.
Revision 1.165 by root, Wed Sep 26 19:26:48 2007 UTC