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Comparing Coro/Coro/State.xs (file contents):
Revision 1.136 by root, Fri Jan 12 01:05:55 2007 UTC vs.
Revision 1.183 by root, Wed Oct 3 19:19:06 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 */
130		136
		137	static GV *irsgv; /* $/ */
		138
		139	/* async_pool helper stuff */
		140	static SV *sv_pool_rss;
		141	static SV *sv_pool_size;
		142	static AV *av_async_pool;
		143
131	static struct coro_cctx *cctx_first;	144	static struct coro_cctx *cctx_first;
132	static int cctx_count, cctx_idle;	145	static int cctx_count, cctx_idle;
		146
		147	enum {
		148	CC_MAPPED = 0x01,
		149	CC_NOREUSE = 0x02, /* throw this away after tracing */
		150	CC_TRACE = 0x04,
		151	CC_TRACE_SUB = 0x08, /* trace sub calls */
		152	CC_TRACE_LINE = 0x10, /* trace each statement */
		153	CC_TRACE_ALL = CC_TRACE_SUB | CC_TRACE_LINE,
		154	};
133		155
134	/* this is a structure representing a c-level coroutine */	156	/* this is a structure representing a c-level coroutine */
135	typedef struct coro_cctx {	157	typedef struct coro_cctx {
136	struct coro_cctx *next;	158	struct coro_cctx *next;
137		159
138	/* the stack */	160	/* the stack */
139	void *sptr;	161	void *sptr;
140	long ssize; /* positive == mmap, otherwise malloc */	162	size_t ssize;
141		163
142	/* cpu state */	164	/* cpu state */
143	void *idle_sp; /* sp of top-level transfer/schedule/cede call */	165	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 */	166	JMPENV *idle_te; /* same as idle_sp, but for top_env, TODO: remove once stable */
145	JMPENV *top_env;	167	JMPENV *top_env;
146	coro_context cctx;	168	coro_context cctx;
147		169
148	int inuse;
149
150	#if USE_VALGRIND	170	#if CORO_USE_VALGRIND
151	int valgrind_id;	171	int valgrind_id;
152	#endif	172	#endif
		173	unsigned char flags;
153	} coro_cctx;	174	} coro_cctx;
154		175
155	enum {	176	enum {
156	CF_RUNNING = 0x0001, /* coroutine is running */	177	CF_RUNNING = 0x0001, /* coroutine is running */
157	CF_READY = 0x0002, /* coroutine is ready */	178	CF_READY = 0x0002, /* coroutine is ready */
…		…
165	coro_cctx *cctx;	186	coro_cctx *cctx;
166		187
167	/* data associated with this coroutine (initial args) */	188	/* data associated with this coroutine (initial args) */
168	AV *args;	189	AV *args;
169	int refcnt;	190	int refcnt;
170	int save; /* CORO_SAVE flags */
171	int flags; /* CF_ flags */	191	int flags; /* CF_ flags */
172		192
173	/* optionally saved, might be zero */	193	/* optionally saved, might be zero */
174	AV *defav; /* @_ */	194	AV *defav; /* @_ */
175	SV *defsv; /* $_ */	195	SV *defsv; /* $_ */
176	SV *errsv; /* $@ */	196	SV *errsv; /* $@ */
		197	GV *deffh; /* default filehandle */
177	SV *irssv; /* $/ */	198	SV *irssv; /* $/ */
178	SV *irssv_sv; /* real $/ cache */	199	SV *irssv_sv; /* real $/ cache */
179		200
180	#define VAR(name,type) type name;	201	#define VAR(name,type) type name;
181	# include "state.h"	202	# include "state.h"
182	#undef VAR	203	#undef VAR
183		204
		205	/* statistics */
		206	int usecount; /* number of transfers to this coro */
		207
184	/* coro process data */	208	/* coro process data */
185	int prio;	209	int prio;
		210	//SV *throw;
		211
		212	/* async_pool */
		213	GV *asp_deffh;
		214
		215	/* linked list */
		216	struct coro *next, *prev;
		217	HV *hv; /* the perl hash associated with this coro, if any */
186	};	218	};
187		219
188	typedef struct coro *Coro__State;	220	typedef struct coro *Coro__State;
189	typedef struct coro *Coro__State_or_hashref;	221	typedef struct coro *Coro__State_or_hashref;
190		222
		223	/** Coro ********************************************************************/
		224
		225	#define PRIO_MAX 3
		226	#define PRIO_HIGH 1
		227	#define PRIO_NORMAL 0
		228	#define PRIO_LOW -1
		229	#define PRIO_IDLE -3
		230	#define PRIO_MIN -4
		231
		232	/* for Coro.pm */
		233	static SV *coro_current;
		234	static AV *coro_ready [PRIO_MAX-PRIO_MIN+1];
		235	static int coro_nready;
		236	static struct coro *coro_first;
		237
		238	/** lowlevel stuff **********************************************************/
		239
191	static AV *	240	static AV *
192	coro_clone_padlist (CV *cv)	241	coro_clone_padlist (pTHX_ CV *cv)
193	{	242	{
194	AV *padlist = CvPADLIST (cv);	243	AV *padlist = CvPADLIST (cv);
195	AV *newpadlist, *newpad;	244	AV *newpadlist, *newpad;
196		245
197	newpadlist = newAV ();	246	newpadlist = newAV ();
…		…
209		258
210	return newpadlist;	259	return newpadlist;
211	}	260	}
212		261
213	static void	262	static void
214	free_padlist (AV *padlist)	263	free_padlist (pTHX_ AV *padlist)
215	{	264	{
216	/* may be during global destruction */	265	/* may be during global destruction */
217	if (SvREFCNT (padlist))	266	if (SvREFCNT (padlist))
218	{	267	{
219	I32 i = AvFILLp (padlist);	268	I32 i = AvFILLp (padlist);
…		…
240	AV *padlist;	289	AV *padlist;
241	AV *av = (AV *)mg->mg_obj;	290	AV *av = (AV *)mg->mg_obj;
242		291
243	/* casting is fun. */	292	/* casting is fun. */
244	while (&PL_sv_undef != (SV *)(padlist = (AV *)av_pop (av)))	293	while (&PL_sv_undef != (SV *)(padlist = (AV *)av_pop (av)))
245	free_padlist (padlist);	294	free_padlist (aTHX_ padlist);
246		295
247	SvREFCNT_dec (av);	296	SvREFCNT_dec (av);
248		297
249	return 0;	298	return 0;
250	}	299	}
…		…
258	? SvMAGIC (cv)->mg_type == PERL_MAGIC_coro \	307	? SvMAGIC (cv)->mg_type == PERL_MAGIC_coro \
259	? SvMAGIC (cv) \	308	? SvMAGIC (cv) \
260	: mg_find ((SV *)cv, PERL_MAGIC_coro) \	309	: mg_find ((SV *)cv, PERL_MAGIC_coro) \
261	: 0	310	: 0
262		311
		312	static struct coro *
		313	SvSTATE_ (pTHX_ SV *coro)
		314	{
		315	HV *stash;
		316	MAGIC *mg;
		317
		318	if (SvROK (coro))
		319	coro = SvRV (coro);
		320
		321	if (SvTYPE (coro) != SVt_PVHV)
		322	croak ("Coro::State object required");
		323
		324	stash = SvSTASH (coro);
		325	if (stash != coro_stash && stash != coro_state_stash)
		326	{
		327	/* very slow, but rare, check */
		328	if (!sv_derived_from (sv_2mortal (newRV_inc (coro)), "Coro::State"))
		329	croak ("Coro::State object required");
		330	}
		331
		332	mg = CORO_MAGIC (coro);
		333	return (struct coro *)mg->mg_ptr;
		334	}
		335
		336	#define SvSTATE(sv) SvSTATE_ (aTHX_ (sv))
		337
263	/* the next two functions merely cache the padlists */	338	/* the next two functions merely cache the padlists */
264	static void	339	static void
265	get_padlist (CV *cv)	340	get_padlist (pTHX_ CV *cv)
266	{	341	{
267	MAGIC *mg = CORO_MAGIC (cv);	342	MAGIC *mg = CORO_MAGIC (cv);
268	AV *av;	343	AV *av;
269		344
270	if (mg && AvFILLp ((av = (AV *)mg->mg_obj)) >= 0)	345	if (mg && AvFILLp ((av = (AV *)mg->mg_obj)) >= 0)
271	CvPADLIST (cv) = (AV *)AvARRAY (av)[AvFILLp (av)--];	346	CvPADLIST (cv) = (AV *)AvARRAY (av)[AvFILLp (av)--];
272	else	347	else
273	{	348	{
274	#if PREFER_PERL_FUNCTIONS	349	#if CORO_PREFER_PERL_FUNCTIONS
275	/* this is probably cleaner, but also slower? */	350	/* this is probably cleaner, but also slower? */
276	CV *cp = Perl_cv_clone (cv);	351	CV *cp = Perl_cv_clone (cv);
277	CvPADLIST (cv) = CvPADLIST (cp);	352	CvPADLIST (cv) = CvPADLIST (cp);
278	CvPADLIST (cp) = 0;	353	CvPADLIST (cp) = 0;
279	SvREFCNT_dec (cp);	354	SvREFCNT_dec (cp);
280	#else	355	#else
281	CvPADLIST (cv) = coro_clone_padlist (cv);	356	CvPADLIST (cv) = coro_clone_padlist (aTHX_ cv);
282	#endif	357	#endif
283	}	358	}
284	}	359	}
285		360
286	static void	361	static void
287	put_padlist (CV *cv)	362	put_padlist (pTHX_ CV *cv)
288	{	363	{
289	MAGIC *mg = CORO_MAGIC (cv);	364	MAGIC *mg = CORO_MAGIC (cv);
290	AV *av;	365	AV *av;
291		366
292	if (!mg)	367	if (!mg)
…		…
303	av_extend (av, AvMAX (av) + 1);	378	av_extend (av, AvMAX (av) + 1);
304		379
305	AvARRAY (av)[++AvFILLp (av)] = (SV *)CvPADLIST (cv);	380	AvARRAY (av)[++AvFILLp (av)] = (SV *)CvPADLIST (cv);
306	}	381	}
307		382
308	#define SB do {	383	/** load & save, init *******************************************************/
309	#define SE } while (0)
310		384
311	#define REPLACE_SV(sv,val) SB SvREFCNT_dec (sv); (sv) = (val); (val) = 0; SE
312
313	static void	385	static void
314	load_perl (Coro__State c)	386	load_perl (pTHX_ Coro__State c)
315	{	387	{
316	#define VAR(name,type) PL_ ## name = c->name;	388	#define VAR(name,type) PL_ ## name = c->name;
317	# include "state.h"	389	# include "state.h"
318	#undef VAR	390	#undef VAR
319		391
320	if (c->defav) REPLACE_SV (GvAV (PL_defgv), c->defav);	392	GvSV (PL_defgv) = c->defsv;
321	if (c->defsv) REPLACE_SV (DEFSV , c->defsv);	393	GvAV (PL_defgv) = c->defav;
322	if (c->errsv) REPLACE_SV (ERRSV , c->errsv);	394	GvSV (PL_errgv) = c->errsv;
323	if (c->irssv)	395	PL_defoutgv = c->deffh;
324	{	396	PL_rs = c->irssv;
325	if (c->irssv == PL_rs || sv_eq (PL_rs, c->irssv))	397	GvSV (irsgv) = c->irssv_sv;
326	SvREFCNT_dec (c->irssv);
327	else
328	{
329	REPLACE_SV (PL_rs, c->irssv);
330	if (!c->irssv_sv) c->irssv_sv = get_sv ("/", 0);
331	sv_setsv (c->irssv_sv, PL_rs);
332	}
333	}
334		398
335	{	399	{
336	dSP;	400	dSP;
337	CV *cv;	401	CV *cv;
338		402
339	/* now do the ugly restore mess */	403	/* now do the ugly restore mess */
340	while ((cv = (CV *)POPs))	404	while ((cv = (CV *)POPs))
341	{	405	{
342	put_padlist (cv); /* mark this padlist as available */	406	put_padlist (aTHX_ cv); /* mark this padlist as available */
343	CvDEPTH (cv) = PTR2IV (POPs);	407	CvDEPTH (cv) = PTR2IV (POPs);
344	CvPADLIST (cv) = (AV *)POPs;	408	CvPADLIST (cv) = (AV *)POPs;
345	}	409	}
346		410
347	PUTBACK;	411	PUTBACK;
348	}	412	}
349	}	413	}
350		414
351	static void	415	static void
352	save_perl (Coro__State c)	416	save_perl (pTHX_ Coro__State c)
353	{	417	{
354	{	418	{
355	dSP;	419	dSP;
356	I32 cxix = cxstack_ix;	420	I32 cxix = cxstack_ix;
357	PERL_CONTEXT *ccstk = cxstack;	421	PERL_CONTEXT *ccstk = cxstack;
…		…
360	/*	424	/*
361	* the worst thing you can imagine happens first - we have to save	425	* the worst thing you can imagine happens first - we have to save
362	* (and reinitialize) all cv's in the whole callchain :(	426	* (and reinitialize) all cv's in the whole callchain :(
363	*/	427	*/
364		428
365	EXTEND (SP, 3 + 1);
366	PUSHs (Nullsv);	429	XPUSHs (Nullsv);
367	/* this loop was inspired by pp_caller */	430	/* this loop was inspired by pp_caller */
368	for (;;)	431	for (;;)
369	{	432	{
370	while (cxix >= 0)	433	while (cxix >= 0)
371	{	434	{
372	PERL_CONTEXT *cx = &ccstk[cxix--];	435	PERL_CONTEXT *cx = &ccstk[cxix--];
373		436
374	if (CxTYPE (cx) == CXt_SUB)	437	if (CxTYPE (cx) == CXt_SUB || CxTYPE (cx) == CXt_FORMAT)
375	{	438	{
376	CV *cv = cx->blk_sub.cv;	439	CV *cv = cx->blk_sub.cv;
377		440
378	if (CvDEPTH (cv))	441	if (CvDEPTH (cv))
379	{	442	{
…		…
381	PUSHs ((SV *)CvPADLIST (cv));	444	PUSHs ((SV *)CvPADLIST (cv));
382	PUSHs (INT2PTR (SV *, CvDEPTH (cv)));	445	PUSHs (INT2PTR (SV *, CvDEPTH (cv)));
383	PUSHs ((SV *)cv);	446	PUSHs ((SV *)cv);
384		447
385	CvDEPTH (cv) = 0;	448	CvDEPTH (cv) = 0;
386	get_padlist (cv);	449	get_padlist (aTHX_ cv);
387	}	450	}
388	}	451	}
389	}	452	}
390		453
391	if (top_si->si_type == PERLSI_MAIN)	454	if (top_si->si_type == PERLSI_MAIN)
392	break;	455	break;
393		456
394	top_si = top_si->si_prev;	457	top_si = top_si->si_prev;
395	ccstk = top_si->si_cxstack;	458	ccstk = top_si->si_cxstack;
396	cxix = top_si->si_cxix;	459	cxix = top_si->si_cxix;
397	}	460	}
398		461
399	PUTBACK;	462	PUTBACK;
400	}	463	}
401		464
402	c->defav = c->save & CORO_SAVE_DEFAV ? (AV *)SvREFCNT_inc (GvAV (PL_defgv)) : 0;	465	c->defav = GvAV (PL_defgv);
403	c->defsv = c->save & CORO_SAVE_DEFSV ? SvREFCNT_inc (DEFSV) : 0;	466	c->defsv = DEFSV;
404	c->errsv = c->save & CORO_SAVE_ERRSV ? SvREFCNT_inc (ERRSV) : 0;	467	c->errsv = ERRSV;
405	c->irssv = c->save & CORO_SAVE_IRSSV ? SvREFCNT_inc (PL_rs) : 0;	468	c->deffh = PL_defoutgv;
		469	c->irssv = PL_rs;
		470	c->irssv_sv = GvSV (irsgv);
406		471
407	#define VAR(name,type)c->name = PL_ ## name;	472	#define VAR(name,type)c->name = PL_ ## name;
408	# include "state.h"	473	# include "state.h"
409	#undef VAR	474	#undef VAR
410	}	475	}
…		…
413	* allocate various perl stacks. This is an exact copy	478	* allocate various perl stacks. This is an exact copy
414	* of perl.c:init_stacks, except that it uses less memory	479	* of perl.c:init_stacks, except that it uses less memory
415	* on the (sometimes correct) assumption that coroutines do	480	* on the (sometimes correct) assumption that coroutines do
416	* not usually need a lot of stackspace.	481	* not usually need a lot of stackspace.
417	*/	482	*/
418	#if PREFER_PERL_FUNCTIONS	483	#if CORO_PREFER_PERL_FUNCTIONS
419	# define coro_init_stacks init_stacks	484	# define coro_init_stacks init_stacks
420	#else	485	#else
421	static void	486	static void
422	coro_init_stacks ()	487	coro_init_stacks (pTHX)
423	{	488	{
424	PL_curstackinfo = new_stackinfo(128, 1024/sizeof(PERL_CONTEXT));	489	PL_curstackinfo = new_stackinfo(64, 6);
425	PL_curstackinfo->si_type = PERLSI_MAIN;	490	PL_curstackinfo->si_type = PERLSI_MAIN;
426	PL_curstack = PL_curstackinfo->si_stack;	491	PL_curstack = PL_curstackinfo->si_stack;
427	PL_mainstack = PL_curstack; /* remember in case we switch stacks */	492	PL_mainstack = PL_curstack; /* remember in case we switch stacks */
428		493
429	PL_stack_base = AvARRAY(PL_curstack);	494	PL_stack_base = AvARRAY(PL_curstack);
430	PL_stack_sp = PL_stack_base;	495	PL_stack_sp = PL_stack_base;
431	PL_stack_max = PL_stack_base + AvMAX(PL_curstack);	496	PL_stack_max = PL_stack_base + AvMAX(PL_curstack);
432		497
433	New(50,PL_tmps_stack,128,SV*);	498	New(50,PL_tmps_stack,64,SV*);
434	PL_tmps_floor = -1;	499	PL_tmps_floor = -1;
435	PL_tmps_ix = -1;	500	PL_tmps_ix = -1;
436	PL_tmps_max = 128;	501	PL_tmps_max = 64;
437		502
438	New(54,PL_markstack,32,I32);	503	New(54,PL_markstack,16,I32);
439	PL_markstack_ptr = PL_markstack;	504	PL_markstack_ptr = PL_markstack;
440	PL_markstack_max = PL_markstack + 32;	505	PL_markstack_max = PL_markstack + 16;
441		506
442	#ifdef SET_MARK_OFFSET	507	#ifdef SET_MARK_OFFSET
443	SET_MARK_OFFSET;	508	SET_MARK_OFFSET;
444	#endif	509	#endif
445		510
446	New(54,PL_scopestack,32,I32);	511	New(54,PL_scopestack,16,I32);
447	PL_scopestack_ix = 0;	512	PL_scopestack_ix = 0;
448	PL_scopestack_max = 32;	513	PL_scopestack_max = 16;
449		514
450	New(54,PL_savestack,64,ANY);	515	New(54,PL_savestack,64,ANY);
451	PL_savestack_ix = 0;	516	PL_savestack_ix = 0;
452	PL_savestack_max = 64;	517	PL_savestack_max = 64;
453		518
454	#if !PERL_VERSION_ATLEAST (5,9,0)	519	#if !PERL_VERSION_ATLEAST (5,9,0)
455	New(54,PL_retstack,16,OP*);	520	New(54,PL_retstack,4,OP*);
456	PL_retstack_ix = 0;	521	PL_retstack_ix = 0;
457	PL_retstack_max = 16;	522	PL_retstack_max = 4;
458	#endif	523	#endif
459	}	524	}
460	#endif	525	#endif
461		526
462	/*	527	/*
463	* destroy the stacks, the callchain etc...	528	* destroy the stacks, the callchain etc...
464	*/	529	*/
465	static void	530	static void
466	coro_destroy_stacks ()	531	coro_destroy_stacks (pTHX)
467	{	532	{
468	if (!IN_DESTRUCT)
469	{
470	/* restore all saved variables and stuff */
471	LEAVE_SCOPE (0);
472	assert (PL_tmps_floor == -1);
473
474	/* free all temporaries */
475	FREETMPS;
476	assert (PL_tmps_ix == -1);
477
478	/* unwind all extra stacks */
479	POPSTACK_TO (PL_mainstack);
480
481	/* unwind main stack */
482	dounwind (-1);
483	}
484
485	while (PL_curstackinfo->si_next)	533	while (PL_curstackinfo->si_next)
486	PL_curstackinfo = PL_curstackinfo->si_next;	534	PL_curstackinfo = PL_curstackinfo->si_next;
487		535
488	while (PL_curstackinfo)	536	while (PL_curstackinfo)
489	{	537	{
…		…
504	#if !PERL_VERSION_ATLEAST (5,9,0)	552	#if !PERL_VERSION_ATLEAST (5,9,0)
505	Safefree (PL_retstack);	553	Safefree (PL_retstack);
506	#endif	554	#endif
507	}	555	}
508		556
509	static void	557	static size_t
510	setup_coro (struct coro *coro)	558	coro_rss (pTHX_ struct coro *coro)
		559	{
		560	size_t rss = sizeof (*coro);
		561
		562	if (coro->mainstack)
		563	{
		564	if (coro->flags & CF_RUNNING)
		565	{
		566	#define VAR(name,type)coro->name = PL_ ## name;
		567	# include "state.h"
		568	#undef VAR
		569	}
		570
		571	rss += sizeof (coro->curstackinfo);
		572	rss += sizeof (struct xpvav) + (1 + AvFILL (coro->curstackinfo->si_stack)) * sizeof (SV *);
		573	rss += (coro->curstackinfo->si_cxmax + 1) * sizeof (PERL_CONTEXT);
		574	rss += sizeof (struct xpvav) + (1 + AvFILL (coro->curstack)) * sizeof (SV *);
		575	rss += coro->tmps_max * sizeof (SV *);
		576	rss += (coro->markstack_max - coro->markstack_ptr) * sizeof (I32);
		577	rss += coro->scopestack_max * sizeof (I32);
		578	rss += coro->savestack_max * sizeof (ANY);
		579
		580	#if !PERL_VERSION_ATLEAST (5,9,0)
		581	rss += coro->retstack_max * sizeof (OP *);
		582	#endif
		583	}
		584
		585	return rss;
		586	}
		587
		588	/** coroutine stack handling ************************************************/
		589
		590	static void
		591	coro_setup (pTHX_ struct coro *coro)
511	{	592	{
512	/*	593	/*
513	* emulate part of the perl startup here.	594	* emulate part of the perl startup here.
514	*/	595	*/
515
516	coro_init_stacks ();	596	coro_init_stacks (aTHX);
517		597
		598	PL_runops = RUNOPS_DEFAULT;
518	PL_curcop = &PL_compiling;	599	PL_curcop = &PL_compiling;
519	PL_in_eval = EVAL_NULL;	600	PL_in_eval = EVAL_NULL;
		601	PL_comppad = 0;
520	PL_curpm = 0;	602	PL_curpm = 0;
521	PL_localizing = 0;	603	PL_localizing = 0;
522	PL_dirty = 0;	604	PL_dirty = 0;
523	PL_restartop = 0;	605	PL_restartop = 0;
		606
		607	GvSV (PL_defgv) = NEWSV (0, 0);
		608	GvAV (PL_defgv) = coro->args; coro->args = 0;
		609	GvSV (PL_errgv) = NEWSV (0, 0);
		610	GvSV (irsgv) = newSVpvn ("\n", 1); sv_magic (GvSV (irsgv), (SV *)irsgv, PERL_MAGIC_sv, "/", 0);
		611	PL_rs = newSVsv (GvSV (irsgv));
		612
		613	{
		614	IO *io = newIO ();
		615	PL_defoutgv = newGVgen ("Coro");
		616	GvIOp(PL_defoutgv) = io;
		617	IoTYPE (io) = IoTYPE_WRONLY;
		618	IoOFP (io) = IoIFP (io) = PerlIO_stdout ();
		619	IoFLAGS (io) |= IOf_FLUSH;
		620	}
524		621
525	{	622	{
526	dSP;	623	dSP;
527	LOGOP myop;	624	LOGOP myop;
528		625
529	SvREFCNT_dec (GvAV (PL_defgv));
530	GvAV (PL_defgv) = coro->args; coro->args = 0;
531
532	Zero (&myop, 1, LOGOP);	626	Zero (&myop, 1, LOGOP);
533	myop.op_next = Nullop;	627	myop.op_next = Nullop;
534	myop.op_flags = OPf_WANT_VOID;	628	myop.op_flags = OPf_WANT_VOID;
535		629
536	PUSHMARK (SP);	630	PUSHMARK (SP);
537	XPUSHs ((SV *)get_cv ("Coro::State::_coro_init", FALSE));	631	XPUSHs (av_shift (GvAV (PL_defgv)));
538	PUTBACK;	632	PUTBACK;
539	PL_op = (OP *)&myop;	633	PL_op = (OP *)&myop;
540	PL_op = PL_ppaddr[OP_ENTERSUB](aTHX);	634	PL_op = PL_ppaddr[OP_ENTERSUB](aTHX);
541	SPAGAIN;	635	SPAGAIN;
542	}	636	}
543		637
544	ENTER; /* necessary e.g. for dounwind */	638	ENTER; /* necessary e.g. for dounwind */
545	}	639	}
546		640
547	static void	641	static void
		642	coro_destroy (pTHX_ struct coro *coro)
		643	{
		644	if (!IN_DESTRUCT)
		645	{
		646	/* restore all saved variables and stuff */
		647	LEAVE_SCOPE (0);
		648	assert (PL_tmps_floor == -1);
		649
		650	/* free all temporaries */
		651	FREETMPS;
		652	assert (PL_tmps_ix == -1);
		653
		654	/* unwind all extra stacks */
		655	POPSTACK_TO (PL_mainstack);
		656
		657	/* unwind main stack */
		658	dounwind (-1);
		659	}
		660
		661	SvREFCNT_dec (GvSV (PL_defgv));
		662	SvREFCNT_dec (GvAV (PL_defgv));
		663	SvREFCNT_dec (GvSV (PL_errgv));
		664	SvREFCNT_dec (PL_defoutgv);
		665	SvREFCNT_dec (PL_rs);
		666	SvREFCNT_dec (GvSV (irsgv));
		667
		668	SvREFCNT_dec (coro->asp_deffh);
		669	//SvREFCNT_dec (coro->throw);
		670
		671	coro_destroy_stacks (aTHX);
		672	}
		673
		674	static void
548	free_coro_mortal ()	675	free_coro_mortal (pTHX)
549	{	676	{
550	if (coro_mortal)	677	if (coro_mortal)
551	{	678	{
552	SvREFCNT_dec (coro_mortal);	679	SvREFCNT_dec (coro_mortal);
553	coro_mortal = 0;	680	coro_mortal = 0;
554	}	681	}
555	}	682	}
556		683
		684	static int
		685	runops_trace (pTHX)
		686	{
		687	COP *oldcop = 0;
		688	int oldcxix = -2;
		689	struct coro *coro = SvSTATE (coro_current); /* trace cctx is tied to specific coro */
		690	coro_cctx *cctx = coro->cctx;
		691
		692	while ((PL_op = CALL_FPTR (PL_op->op_ppaddr) (aTHX)))
		693	{
		694	PERL_ASYNC_CHECK ();
		695
		696	if (cctx->flags & CC_TRACE_ALL)
		697	{
		698	if (PL_op->op_type == OP_LEAVESUB && cctx->flags & CC_TRACE_SUB)
		699	{
		700	PERL_CONTEXT *cx = &cxstack[cxstack_ix];
		701	SV **bot, **top;
		702	AV *av = newAV (); /* return values */
		703	SV **cb;
		704	dSP;
		705
		706	GV *gv = CvGV (cx->blk_sub.cv);
		707	SV *fullname = sv_2mortal (newSV (0));
		708	if (isGV (gv))
		709	gv_efullname3 (fullname, gv, 0);
		710
		711	bot = PL_stack_base + cx->blk_oldsp + 1;
		712	top = cx->blk_gimme == G_ARRAY ? SP + 1
		713	: cx->blk_gimme == G_SCALAR ? bot + 1
		714	: bot;
		715
		716	while (bot < top)
		717	av_push (av, SvREFCNT_inc (*bot++));
		718
		719	PL_runops = RUNOPS_DEFAULT;
		720	ENTER;
		721	SAVETMPS;
		722	EXTEND (SP, 3);
		723	PUSHMARK (SP);
		724	PUSHs (&PL_sv_no);
		725	PUSHs (fullname);
		726	PUSHs (sv_2mortal (newRV_noinc ((SV *)av)));
		727	PUTBACK;
		728	cb = hv_fetch ((HV *)SvRV (coro_current), "_trace_sub_cb", sizeof ("_trace_sub_cb") - 1, 0);
		729	if (cb) call_sv (*cb, G_KEEPERR | G_EVAL | G_VOID | G_DISCARD);
		730	SPAGAIN;
		731	FREETMPS;
		732	LEAVE;
		733	PL_runops = runops_trace;
		734	}
		735
		736	if (oldcop != PL_curcop)
		737	{
		738	oldcop = PL_curcop;
		739
		740	if (PL_curcop != &PL_compiling)
		741	{
		742	SV **cb;
		743
		744	if (oldcxix != cxstack_ix && cctx->flags & CC_TRACE_SUB)
		745	{
		746	PERL_CONTEXT *cx = &cxstack[cxstack_ix];
		747
		748	if (CxTYPE (cx) == CXt_SUB && oldcxix < cxstack_ix)
		749	{
		750	runops_proc_t old_runops = PL_runops;
		751	dSP;
		752	GV *gv = CvGV (cx->blk_sub.cv);
		753	SV *fullname = sv_2mortal (newSV (0));
		754
		755	if (isGV (gv))
		756	gv_efullname3 (fullname, gv, 0);
		757
		758	PL_runops = RUNOPS_DEFAULT;
		759	ENTER;
		760	SAVETMPS;
		761	EXTEND (SP, 3);
		762	PUSHMARK (SP);
		763	PUSHs (&PL_sv_yes);
		764	PUSHs (fullname);
		765	PUSHs (cx->blk_sub.hasargs ? sv_2mortal (newRV_inc ((SV *)cx->blk_sub.argarray)) : &PL_sv_undef);
		766	PUTBACK;
		767	cb = hv_fetch ((HV *)SvRV (coro_current), "_trace_sub_cb", sizeof ("_trace_sub_cb") - 1, 0);
		768	if (cb) call_sv (*cb, G_KEEPERR | G_EVAL | G_VOID | G_DISCARD);
		769	SPAGAIN;
		770	FREETMPS;
		771	LEAVE;
		772	PL_runops = runops_trace;
		773	}
		774
		775	oldcxix = cxstack_ix;
		776	}
		777
		778	if (cctx->flags & CC_TRACE_LINE)
		779	{
		780	dSP;
		781
		782	PL_runops = RUNOPS_DEFAULT;
		783	ENTER;
		784	SAVETMPS;
		785	EXTEND (SP, 3);
		786	PL_runops = RUNOPS_DEFAULT;
		787	PUSHMARK (SP);
		788	PUSHs (sv_2mortal (newSVpv (OutCopFILE (oldcop), 0)));
		789	PUSHs (sv_2mortal (newSViv (CopLINE (oldcop))));
		790	PUTBACK;
		791	cb = hv_fetch ((HV *)SvRV (coro_current), "_trace_line_cb", sizeof ("_trace_line_cb") - 1, 0);
		792	if (cb) call_sv (*cb, G_KEEPERR | G_EVAL | G_VOID | G_DISCARD);
		793	SPAGAIN;
		794	FREETMPS;
		795	LEAVE;
		796	PL_runops = runops_trace;
		797	}
		798	}
		799	}
		800	}
		801	}
		802
		803	TAINT_NOT;
		804	return 0;
		805	}
		806
557	/* inject a fake call to Coro::State::_cctx_init into the execution */	807	/* inject a fake call to Coro::State::_cctx_init into the execution */
		808	/* _cctx_init should be careful, as it could be called at almost any time */
		809	/* during execution of a perl program */
558	static void NOINLINE	810	static void NOINLINE
559	prepare_cctx (coro_cctx *cctx)	811	prepare_cctx (pTHX_ coro_cctx *cctx)
560	{	812	{
561	dSP;	813	dSP;
562	LOGOP myop;	814	LOGOP myop;
		815
		816	PL_top_env = &PL_start_env;
		817
		818	if (cctx->flags & CC_TRACE)
		819	PL_runops = runops_trace;
563		820
564	Zero (&myop, 1, LOGOP);	821	Zero (&myop, 1, LOGOP);
565	myop.op_next = PL_op;	822	myop.op_next = PL_op;
566	myop.op_flags = OPf_WANT_VOID | OPf_STACKED;	823	myop.op_flags = OPf_WANT_VOID | OPf_STACKED;
567		824
…		…
573	PL_op = (OP *)&myop;	830	PL_op = (OP *)&myop;
574	PL_op = PL_ppaddr[OP_ENTERSUB](aTHX);	831	PL_op = PL_ppaddr[OP_ENTERSUB](aTHX);
575	SPAGAIN;	832	SPAGAIN;
576	}	833	}
577		834
		835	/*
		836	* this is a _very_ stripped down perl interpreter ;)
		837	*/
578	static void	838	static void
579	coro_run (void *arg)	839	coro_run (void *arg)
580	{	840	{
		841	dTHX;
		842
581	/* coro_run is the alternative tail of transfer(), so unlock here. */	843	/* coro_run is the alternative tail of transfer(), so unlock here. */
582	UNLOCK;	844	UNLOCK;
583		845
584	/*	846	/* we now skip the entersub that lead to transfer() */
585	* this is a _very_ stripped down perl interpreter ;)	847	PL_op = PL_op->op_next;
586	*/
587	PL_top_env = &PL_start_env;
588		848
589	/* inject call to cctx_init */	849	/* inject a fake subroutine call to cctx_init */
590	prepare_cctx ((coro_cctx *)arg);	850	prepare_cctx (aTHX_ (coro_cctx *)arg);
591		851
592	/* somebody will hit me for both perl_run and PL_restartop */	852	/* somebody or something will hit me for both perl_run and PL_restartop */
593	PL_restartop = PL_op;	853	PL_restartop = PL_op;
594	perl_run (PL_curinterp);	854	perl_run (PL_curinterp);
595		855
596	fputs ("FATAL: C coroutine fell over the edge of the world, aborting. Did you call exit in a coroutine?\n", stderr);	856	/*
597	abort ();	857	* If perl-run returns we assume exit() was being called or the coro
		858	* fell off the end, which seems to be the only valid (non-bug)
		859	* reason for perl_run to return. We try to exit by jumping to the
		860	* bootstrap-time "top" top_env, as we cannot restore the "main"
		861	* coroutine as Coro has no such concept
		862	*/
		863	PL_top_env = main_top_env;
		864	JMPENV_JUMP (2); /* I do not feel well about the hardcoded 2 at all */
598	}	865	}
599		866
600	static coro_cctx *	867	static coro_cctx *
601	cctx_new ()	868	cctx_new ()
602	{	869	{
603	coro_cctx *cctx;	870	coro_cctx *cctx;
		871	void *stack_start;
		872	size_t stack_size;
604		873
605	++cctx_count;	874	++cctx_count;
606		875
607	Newz (0, cctx, 1, coro_cctx);	876	Newz (0, cctx, 1, coro_cctx);
608		877
609	#if HAVE_MMAP	878	#if HAVE_MMAP
610		879
611	cctx->ssize = ((STACKSIZE * sizeof (long) + PAGESIZE - 1) / PAGESIZE + STACKGUARD) * PAGESIZE;	880	cctx->ssize = ((coro_stacksize * sizeof (long) + PAGESIZE - 1) / PAGESIZE + CORO_STACKGUARD) * PAGESIZE;
612	/* mmap supposedly does allocate-on-write for us */	881	/* 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);	882	cctx->sptr = mmap (0, cctx->ssize, PROT_EXEC|PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, 0, 0);
614		883
615	if (cctx->sptr == (void *)-1)	884	if (cctx->sptr != (void *)-1)
616	{
617	perror ("FATAL: unable to mmap stack for coroutine");
618	_exit (EXIT_FAILURE);
619	}	885	{
620
621	# if STACKGUARD	886	# if CORO_STACKGUARD
622	mprotect (cctx->sptr, STACKGUARD * PAGESIZE, PROT_NONE);	887	mprotect (cctx->sptr, CORO_STACKGUARD * PAGESIZE, PROT_NONE);
623	# endif	888	# endif
		889	stack_start = CORO_STACKGUARD * PAGESIZE + (char *)cctx->sptr;
		890	stack_size = cctx->ssize - CORO_STACKGUARD * PAGESIZE;
		891	cctx->flags |= CC_MAPPED;
		892	}
		893	else
		894	#endif
		895	{
		896	cctx->ssize = coro_stacksize * (long)sizeof (long);
		897	New (0, cctx->sptr, coro_stacksize, long);
624		898
625	#else
626
627	cctx->ssize = STACKSIZE * (long)sizeof (long);
628	New (0, cctx->sptr, STACKSIZE, long);
629
630	if (!cctx->sptr)	899	if (!cctx->sptr)
631	{	900	{
632	perror ("FATAL: unable to malloc stack for coroutine");	901	perror ("FATAL: unable to allocate stack for coroutine");
633	_exit (EXIT_FAILURE);	902	_exit (EXIT_FAILURE);
634	}	903	}
635		904
636	#endif	905	stack_start = cctx->sptr;
		906	stack_size = cctx->ssize;
		907	}
637		908
638	#if USE_VALGRIND	909	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);	910	coro_create (&cctx->cctx, coro_run, (void *)cctx, stack_start, stack_size);
646		911
647	return cctx;	912	return cctx;
648	}	913	}
649		914
650	static void	915	static void
…		…
653	if (!cctx)	918	if (!cctx)
654	return;	919	return;
655		920
656	--cctx_count;	921	--cctx_count;
657		922
658	#if USE_VALGRIND	923	#if CORO_USE_VALGRIND
659	VALGRIND_STACK_DEREGISTER (cctx->valgrind_id);	924	VALGRIND_STACK_DEREGISTER (cctx->valgrind_id);
660	#endif	925	#endif
661		926
662	#if HAVE_MMAP	927	#if HAVE_MMAP
		928	if (cctx->flags & CC_MAPPED)
663	munmap (cctx->sptr, cctx->ssize);	929	munmap (cctx->sptr, cctx->ssize);
664	#else	930	else
		931	#endif
665	Safefree (cctx->sptr);	932	Safefree (cctx->sptr);
666	#endif
667		933
668	Safefree (cctx);	934	Safefree (cctx);
669	}	935	}
670		936
671	static coro_cctx *	937	static coro_cctx *
672	cctx_get ()	938	cctx_get (pTHX)
673	{	939	{
674	coro_cctx *cctx;
675
676	if (cctx_first)	940	while (cctx_first)
677	{	941	{
678	cctx = cctx_first;	942	coro_cctx *cctx = cctx_first;
679	cctx_first = cctx->next;	943	cctx_first = cctx->next;
680	--cctx_idle;	944	--cctx_idle;
681	}	945
682	else	946	if (cctx->ssize >= coro_stacksize && !(cctx->flags & CC_NOREUSE))
683	{	947	return cctx;
684	cctx = cctx_new ();	948
685	PL_op = PL_op->op_next;	949	cctx_destroy (cctx);
686	}	950	}
687		951
688	return cctx;	952	return cctx_new ();
689	}	953	}
690		954
691	static void	955	static void
692	cctx_put (coro_cctx *cctx)	956	cctx_put (coro_cctx *cctx)
693	{	957	{
…		…
696	{	960	{
697	coro_cctx *first = cctx_first;	961	coro_cctx *first = cctx_first;
698	cctx_first = first->next;	962	cctx_first = first->next;
699	--cctx_idle;	963	--cctx_idle;
700		964
701	assert (!first->inuse);
702	cctx_destroy (first);	965	cctx_destroy (first);
703	}	966	}
704		967
705	++cctx_idle;	968	++cctx_idle;
706	cctx->next = cctx_first;	969	cctx->next = cctx_first;
707	cctx_first = cctx;	970	cctx_first = cctx;
708	}	971	}
709		972
710	/* never call directly, always through the coro_state_transfer global variable */	973	/** coroutine switching *****************************************************/
		974
711	static void NOINLINE	975	static void NOINLINE
		976	transfer_check (pTHX_ struct coro *prev, struct coro *next)
		977	{
		978	if (prev != next)
		979	{
		980	if (!(prev->flags & (CF_RUNNING | CF_NEW)))
		981	croak ("Coro::State::transfer called with non-running/new prev Coro::State, but can only transfer from running or new states");
		982
		983	if (next->flags & CF_RUNNING)
		984	croak ("Coro::State::transfer called with running next Coro::State, but can only transfer to inactive states");
		985
		986	if (next->flags & CF_DESTROYED)
		987	croak ("Coro::State::transfer called with destroyed next Coro::State, but can only transfer to inactive states");
		988
		989	if (PL_lex_state != LEX_NOTPARSING)
		990	croak ("Coro::State::transfer called while parsing, but this is not supported");
		991	}
		992	}
		993
		994	/* always use the TRANSFER macro */
		995	static void NOINLINE
712	transfer (struct coro *prev, struct coro *next)	996	transfer (pTHX_ struct coro *prev, struct coro *next)
713	{	997	{
714	dSTACKLEVEL;	998	dSTACKLEVEL;
715		999
716	/* sometimes transfer is only called to set idle_sp */	1000	/* sometimes transfer is only called to set idle_sp */
717	if (!next)	1001	if (!next)
…		…
725		1009
726	if (prev->flags & CF_NEW)	1010	if (prev->flags & CF_NEW)
727	{	1011	{
728	/* create a new empty context */	1012	/* create a new empty context */
729	Newz (0, prev->cctx, 1, coro_cctx);	1013	Newz (0, prev->cctx, 1, coro_cctx);
730	prev->cctx->inuse = 1;
731	prev->flags &= ~CF_NEW;	1014	prev->flags &= ~CF_NEW;
732	prev->flags |= CF_RUNNING;	1015	prev->flags |= CF_RUNNING;
733	}	1016	}
734
735	/*TODO: must not croak here */
736	if (!prev->flags & CF_RUNNING)
737	croak ("Coro::State::transfer called with non-running prev Coro::State, but can only transfer from running states");
738
739	if (next->flags & CF_RUNNING)
740	croak ("Coro::State::transfer called with running next Coro::State, but can only transfer to inactive states");
741
742	if (next->flags & CF_DESTROYED)
743	croak ("Coro::State::transfer called with destroyed next Coro::State, but can only transfer to inactive states");
744		1017
745	prev->flags &= ~CF_RUNNING;	1018	prev->flags &= ~CF_RUNNING;
746	next->flags |= CF_RUNNING;	1019	next->flags |= CF_RUNNING;
747		1020
748	LOCK;	1021	LOCK;
…		…
750	if (next->flags & CF_NEW)	1023	if (next->flags & CF_NEW)
751	{	1024	{
752	/* need to start coroutine */	1025	/* need to start coroutine */
753	next->flags &= ~CF_NEW;	1026	next->flags &= ~CF_NEW;
754	/* first get rid of the old state */	1027	/* first get rid of the old state */
755	save_perl (prev);	1028	save_perl (aTHX_ prev);
756	/* setup coroutine call */	1029	/* setup coroutine call */
757	setup_coro (next);	1030	coro_setup (aTHX_ next);
758	/* need a new stack */
759	assert (!next->cctx);
760	}	1031	}
761	else	1032	else
762	{	1033	{
763	/* coroutine already started */	1034	/* coroutine already started */
764	save_perl (prev);	1035	save_perl (aTHX_ prev);
765	load_perl (next);	1036	load_perl (aTHX_ next);
766	}	1037	}
767		1038
768	prev__cctx = prev->cctx;	1039	prev__cctx = prev->cctx;
769		1040
770	/* possibly "free" the cctx */	1041	/* possibly "free" the cctx */
771	if (prev__cctx->idle_sp == STACKLEVEL)	1042	if (prev__cctx->idle_sp == STACKLEVEL && !(prev__cctx->flags & CC_TRACE))
772	{	1043	{
773	/* I assume that STACKLEVEL is a stronger indicator than PL_top_env changes */	1044	/* I assume that STACKLEVEL is a stronger indicator than PL_top_env changes */
774	assert (("ERROR: current top_env must equal previous top_env", PL_top_env == prev__cctx->idle_te));	1045	assert (("ERROR: current top_env must equal previous top_env", PL_top_env == prev__cctx->idle_te));
775		1046
776	prev->cctx = 0;	1047	prev->cctx = 0;
777		1048
778	cctx_put (prev__cctx);	1049	cctx_put (prev__cctx);
779	prev__cctx->inuse = 0;
780	}	1050	}
781		1051
		1052	++next->usecount;
		1053
782	if (!next->cctx)	1054	if (!next->cctx)
783	{
784	next->cctx = cctx_get ();	1055	next->cctx = cctx_get (aTHX);
785	assert (!next->cctx->inuse);
786	next->cctx->inuse = 1;
787	}
788		1056
789	if (prev__cctx != next->cctx)	1057	if (prev__cctx != next->cctx)
790	{	1058	{
791	prev__cctx->top_env = PL_top_env;	1059	prev__cctx->top_env = PL_top_env;
792	PL_top_env = next->cctx->top_env;	1060	PL_top_env = next->cctx->top_env;
793	coro_transfer (&prev__cctx->cctx, &next->cctx->cctx);	1061	coro_transfer (&prev__cctx->cctx, &next->cctx->cctx);
794	}	1062	}
795		1063
796	free_coro_mortal ();	1064	free_coro_mortal (aTHX);
797	UNLOCK;	1065	UNLOCK;
798	}	1066	}
799	}	1067	}
800		1068
801	struct transfer_args	1069	struct transfer_args
802	{	1070	{
803	struct coro *prev, *next;	1071	struct coro *prev, *next;
804	};	1072	};
805		1073
806	#define TRANSFER(ta) transfer ((ta).prev, (ta).next)	1074	#define TRANSFER(ta) transfer (aTHX_ (ta).prev, (ta).next)
		1075	#define TRANSFER_CHECK(ta) transfer_check (aTHX_ (ta).prev, (ta).next)
		1076
		1077	/** high level stuff ********************************************************/
807		1078
808	static int	1079	static int
809	coro_state_destroy (struct coro *coro)	1080	coro_state_destroy (pTHX_ struct coro *coro)
810	{	1081	{
811	if (coro->flags & CF_DESTROYED)	1082	if (coro->flags & CF_DESTROYED)
812	return 0;	1083	return 0;
813		1084
814	coro->flags |= CF_DESTROYED;	1085	coro->flags |= CF_DESTROYED;
		1086
		1087	if (coro->flags & CF_READY)
		1088	{
		1089	/* reduce nready, as destroying a ready coro effectively unreadies it */
		1090	/* alternative: look through all ready queues and remove the coro */
		1091	LOCK;
		1092	--coro_nready;
		1093	UNLOCK;
		1094	}
		1095	else
		1096	coro->flags |= CF_READY; /* make sure it is NOT put into the readyqueue */
815		1097
816	if (coro->mainstack && coro->mainstack != main_mainstack)	1098	if (coro->mainstack && coro->mainstack != main_mainstack)
817	{	1099	{
818	assert (!(coro->flags & CF_RUNNING));
819
820	struct coro temp;	1100	struct coro temp;
821	Zero (&temp, 1, struct coro);
822	temp.save = CORO_SAVE_ALL;
823		1101
824	if (coro->flags & CF_RUNNING)	1102	if (coro->flags & CF_RUNNING)
825	croak ("FATAL: tried to destroy currently running coroutine");	1103	croak ("FATAL: tried to destroy currently running coroutine");
826		1104
827	save_perl (&temp);	1105	save_perl (aTHX_ &temp);
828	load_perl (coro);	1106	load_perl (aTHX_ coro);
829		1107
830	coro_destroy_stacks ();	1108	coro_destroy (aTHX_ coro);
831		1109
832	load_perl (&temp); /* this will get rid of defsv etc.. */	1110	load_perl (aTHX_ &temp); /* this will get rid of defsv etc.. */
833		1111
834	coro->mainstack = 0;	1112	coro->mainstack = 0;
835	}	1113	}
836		1114
837	cctx_destroy (coro->cctx);	1115	cctx_destroy (coro->cctx);
838	SvREFCNT_dec (coro->args);	1116	SvREFCNT_dec (coro->args);
839		1117
		1118	if (coro->next) coro->next->prev = coro->prev;
		1119	if (coro->prev) coro->prev->next = coro->next;
		1120	if (coro == coro_first) coro_first = coro->next;
		1121
840	return 1;	1122	return 1;
841	}	1123	}
842		1124
843	static int	1125	static int
844	coro_state_free (pTHX_ SV *sv, MAGIC *mg)	1126	coro_state_free (pTHX_ SV *sv, MAGIC *mg)
845	{	1127	{
846	struct coro *coro = (struct coro *)mg->mg_ptr;	1128	struct coro *coro = (struct coro *)mg->mg_ptr;
847	mg->mg_ptr = 0;	1129	mg->mg_ptr = 0;
848		1130
		1131	coro->hv = 0;
		1132
849	if (--coro->refcnt < 0)	1133	if (--coro->refcnt < 0)
850	{	1134	{
851	coro_state_destroy (coro);	1135	coro_state_destroy (aTHX_ coro);
852	Safefree (coro);	1136	Safefree (coro);
853	}	1137	}
854		1138
855	return 0;	1139	return 0;
856	}	1140	}
…		…
874	#else	1158	#else
875	# define MGf_DUP 0	1159	# define MGf_DUP 0
876	#endif	1160	#endif
877	};	1161	};
878		1162
879	static struct coro *
880	SvSTATE (SV *coro)
881	{
882	HV *stash;
883	MAGIC *mg;
884
885	if (SvROK (coro))
886	coro = SvRV (coro);
887
888	stash = SvSTASH (coro);
889	if (stash != coro_stash && stash != coro_state_stash)
890	{
891	/* very slow, but rare, check */
892	if (!sv_derived_from (sv_2mortal (newRV_inc (coro)), "Coro::State"))
893	croak ("Coro::State object required");
894	}
895
896	mg = SvMAGIC (coro);
897	assert (mg->mg_type == PERL_MAGIC_ext);
898	return (struct coro *)mg->mg_ptr;
899	}
900
901	static void	1163	static void
902	prepare_transfer (struct transfer_args *ta, SV *prev_sv, SV *next_sv)	1164	prepare_transfer (pTHX_ struct transfer_args *ta, SV *prev_sv, SV *next_sv)
903	{	1165	{
904	ta->prev = SvSTATE (prev_sv);	1166	ta->prev = SvSTATE (prev_sv);
905	ta->next = SvSTATE (next_sv);	1167	ta->next = SvSTATE (next_sv);
		1168	TRANSFER_CHECK (*ta);
906	}	1169	}
907		1170
908	static void	1171	static void
909	api_transfer (SV *prev_sv, SV *next_sv)	1172	api_transfer (SV *prev_sv, SV *next_sv)
910	{	1173	{
		1174	dTHX;
911	struct transfer_args ta;	1175	struct transfer_args ta;
912		1176
913	prepare_transfer (&ta, prev_sv, next_sv);	1177	prepare_transfer (aTHX_ &ta, prev_sv, next_sv);
914	TRANSFER (ta);	1178	TRANSFER (ta);
915	}	1179	}
916		1180
917	static int
918	api_save (SV *coro_sv, int new_save)
919	{
920	struct coro *coro = SvSTATE (coro_sv);
921	int old_save = coro->save;
922
923	if (new_save >= 0)
924	coro->save = new_save;
925
926	return old_save;
927	}
928
929	/** Coro ********************************************************************/	1181	/** Coro ********************************************************************/
930		1182
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	1183	static void
944	coro_enq (SV *coro_sv)	1184	coro_enq (pTHX_ SV *coro_sv)
945	{	1185	{
946	av_push (coro_ready [SvSTATE (coro_sv)->prio - PRIO_MIN], coro_sv);	1186	av_push (coro_ready [SvSTATE (coro_sv)->prio - PRIO_MIN], coro_sv);
947	coro_nready++;
948	}	1187	}
949		1188
950	static SV *	1189	static SV *
951	coro_deq (int min_prio)	1190	coro_deq (pTHX_ int min_prio)
952	{	1191	{
953	int prio = PRIO_MAX - PRIO_MIN;	1192	int prio = PRIO_MAX - PRIO_MIN;
954		1193
955	min_prio -= PRIO_MIN;	1194	min_prio -= PRIO_MIN;
956	if (min_prio < 0)	1195	if (min_prio < 0)
957	min_prio = 0;	1196	min_prio = 0;
958		1197
959	for (prio = PRIO_MAX - PRIO_MIN + 1; --prio >= min_prio; )	1198	for (prio = PRIO_MAX - PRIO_MIN + 1; --prio >= min_prio; )
960	if (AvFILLp (coro_ready [prio]) >= 0)	1199	if (AvFILLp (coro_ready [prio]) >= 0)
961	{
962	coro_nready--;
963	return av_shift (coro_ready [prio]);	1200	return av_shift (coro_ready [prio]);
964	}
965		1201
966	return 0;	1202	return 0;
967	}	1203	}
968		1204
969	static int	1205	static int
970	api_ready (SV *coro_sv)	1206	api_ready (SV *coro_sv)
971	{	1207	{
		1208	dTHX;
972	struct coro *coro;	1209	struct coro *coro;
973		1210
974	if (SvROK (coro_sv))	1211	if (SvROK (coro_sv))
975	coro_sv = SvRV (coro_sv);	1212	coro_sv = SvRV (coro_sv);
976		1213
…		…
980	return 0;	1217	return 0;
981		1218
982	coro->flags |= CF_READY;	1219	coro->flags |= CF_READY;
983		1220
984	LOCK;	1221	LOCK;
985	coro_enq (SvREFCNT_inc (coro_sv));	1222	coro_enq (aTHX_ SvREFCNT_inc (coro_sv));
		1223	++coro_nready;
986	UNLOCK;	1224	UNLOCK;
987		1225
988	return 1;	1226	return 1;
989	}	1227	}
990		1228
991	static int	1229	static int
992	api_is_ready (SV *coro_sv)	1230	api_is_ready (SV *coro_sv)
993	{	1231	{
		1232	dTHX;
994	return !!(SvSTATE (coro_sv)->flags & CF_READY);	1233	return !!(SvSTATE (coro_sv)->flags & CF_READY);
995	}	1234	}
996		1235
997	static void	1236	static void
998	prepare_schedule (struct transfer_args *ta)	1237	prepare_schedule (pTHX_ struct transfer_args *ta)
999	{	1238	{
1000	SV *prev_sv, *next_sv;	1239	SV *prev_sv, *next_sv;
1001		1240
1002	for (;;)	1241	for (;;)
1003	{	1242	{
1004	LOCK;	1243	LOCK;
1005	next_sv = coro_deq (PRIO_MIN);	1244	next_sv = coro_deq (aTHX_ PRIO_MIN);
1006	UNLOCK;
1007		1245
1008	/* nothing to schedule: call the idle handler */	1246	/* nothing to schedule: call the idle handler */
1009	if (!next_sv)	1247	if (!next_sv)
1010	{	1248	{
1011	dSP;	1249	dSP;
		1250	UNLOCK;
1012		1251
1013	ENTER;	1252	ENTER;
1014	SAVETMPS;	1253	SAVETMPS;
1015		1254
1016	PUSHMARK (SP);	1255	PUSHMARK (SP);
…		…
1025	ta->next = SvSTATE (next_sv);	1264	ta->next = SvSTATE (next_sv);
1026		1265
1027	/* cannot transfer to destroyed coros, skip and look for next */	1266	/* cannot transfer to destroyed coros, skip and look for next */
1028	if (ta->next->flags & CF_DESTROYED)	1267	if (ta->next->flags & CF_DESTROYED)
1029	{	1268	{
		1269	UNLOCK;
1030	SvREFCNT_dec (next_sv);	1270	SvREFCNT_dec (next_sv);
		1271	/* coro_nready is already taken care of by destroy */
1031	continue;	1272	continue;
1032	}	1273	}
1033		1274
		1275	--coro_nready;
		1276	UNLOCK;
1034	break;	1277	break;
1035	}	1278	}
1036		1279
1037	/* free this only after the transfer */	1280	/* free this only after the transfer */
1038	prev_sv = SvRV (coro_current);	1281	prev_sv = SvRV (coro_current);
1039	SvRV_set (coro_current, next_sv);
1040	ta->prev = SvSTATE (prev_sv);	1282	ta->prev = SvSTATE (prev_sv);
1041		1283	TRANSFER_CHECK (*ta);
1042	assert (ta->next->flags & CF_READY);	1284	assert (ta->next->flags & CF_READY);
1043	ta->next->flags &= ~CF_READY;	1285	ta->next->flags &= ~CF_READY;
		1286	SvRV_set (coro_current, next_sv);
1044		1287
1045	LOCK;	1288	LOCK;
1046	free_coro_mortal ();	1289	free_coro_mortal (aTHX);
1047	coro_mortal = prev_sv;	1290	coro_mortal = prev_sv;
1048	UNLOCK;	1291	UNLOCK;
1049	}	1292	}
1050		1293
1051	static void	1294	static void
1052	prepare_cede (struct transfer_args *ta)	1295	prepare_cede (pTHX_ struct transfer_args *ta)
1053	{	1296	{
1054	api_ready (coro_current);	1297	api_ready (coro_current);
1055	prepare_schedule (ta);	1298	prepare_schedule (aTHX_ ta);
1056	}	1299	}
1057		1300
1058	static int	1301	static int
1059	prepare_cede_notself (struct transfer_args *ta)	1302	prepare_cede_notself (pTHX_ struct transfer_args *ta)
1060	{	1303	{
1061	if (coro_nready)	1304	if (coro_nready)
1062	{	1305	{
1063	SV *prev = SvRV (coro_current);	1306	SV *prev = SvRV (coro_current);
1064	prepare_schedule (ta);	1307	prepare_schedule (aTHX_ ta);
1065	api_ready (prev);	1308	api_ready (prev);
1066	return 1;	1309	return 1;
1067	}	1310	}
1068	else	1311	else
1069	return 0;	1312	return 0;
1070	}	1313	}
1071		1314
1072	static void	1315	static void
1073	api_schedule (void)	1316	api_schedule (void)
1074	{	1317	{
		1318	dTHX;
1075	struct transfer_args ta;	1319	struct transfer_args ta;
1076		1320
1077	prepare_schedule (&ta);	1321	prepare_schedule (aTHX_ &ta);
1078	TRANSFER (ta);	1322	TRANSFER (ta);
1079	}	1323	}
1080		1324
1081	static int	1325	static int
1082	api_cede (void)	1326	api_cede (void)
1083	{	1327	{
		1328	dTHX;
1084	struct transfer_args ta;	1329	struct transfer_args ta;
1085		1330
1086	prepare_cede (&ta);	1331	prepare_cede (aTHX_ &ta);
1087		1332
1088	if (ta.prev != ta.next)	1333	if (ta.prev != ta.next)
1089	{	1334	{
1090	TRANSFER (ta);	1335	TRANSFER (ta);
1091	return 1;	1336	return 1;
…		…
1095	}	1340	}
1096		1341
1097	static int	1342	static int
1098	api_cede_notself (void)	1343	api_cede_notself (void)
1099	{	1344	{
		1345	dTHX;
1100	struct transfer_args ta;	1346	struct transfer_args ta;
1101		1347
1102	if (prepare_cede_notself (&ta))	1348	if (prepare_cede_notself (aTHX_ &ta))
1103	{	1349	{
1104	TRANSFER (ta);	1350	TRANSFER (ta);
1105	return 1;	1351	return 1;
1106	}	1352	}
1107	else	1353	else
1108	return 0;	1354	return 0;
1109	}	1355	}
1110		1356
		1357	static void
		1358	api_trace (SV *coro_sv, int flags)
		1359	{
		1360	dTHX;
		1361	struct coro *coro = SvSTATE (coro_sv);
		1362
		1363	if (flags & CC_TRACE)
		1364	{
		1365	if (!coro->cctx)
		1366	coro->cctx = cctx_new ();
		1367	else if (!(coro->cctx->flags & CC_TRACE))
		1368	croak ("cannot enable tracing on coroutine with custom stack");
		1369
		1370	coro->cctx->flags |= CC_NOREUSE | (flags & (CC_TRACE | CC_TRACE_ALL));
		1371	}
		1372	else if (coro->cctx && coro->cctx->flags & CC_TRACE)
		1373	{
		1374	coro->cctx->flags &= ~(CC_TRACE | CC_TRACE_ALL);
		1375
		1376	if (coro->flags & CF_RUNNING)
		1377	PL_runops = RUNOPS_DEFAULT;
		1378	else
		1379	coro->runops = RUNOPS_DEFAULT;
		1380	}
		1381	}
		1382
1111	MODULE = Coro::State PACKAGE = Coro::State	1383	MODULE = Coro::State PACKAGE = Coro::State PREFIX = api_
1112		1384
1113	PROTOTYPES: DISABLE	1385	PROTOTYPES: DISABLE
1114		1386
1115	BOOT:	1387	BOOT:
1116	{	1388	{
1117	#ifdef USE_ITHREADS	1389	#ifdef USE_ITHREADS
1118	MUTEX_INIT (&coro_mutex);	1390	MUTEX_INIT (&coro_mutex);
1119	#endif	1391	#endif
1120	BOOT_PAGESIZE;	1392	BOOT_PAGESIZE;
1121		1393
		1394	irsgv = gv_fetchpv ("/", 1, SVt_PV);
		1395
1122	coro_state_stash = gv_stashpv ("Coro::State", TRUE);	1396	coro_state_stash = gv_stashpv ("Coro::State", TRUE);
1123		1397
		1398	newCONSTSUB (coro_state_stash, "CC_TRACE" , newSViv (CC_TRACE));
		1399	newCONSTSUB (coro_state_stash, "CC_TRACE_SUB" , newSViv (CC_TRACE_SUB));
1124	newCONSTSUB (coro_state_stash, "SAVE_DEFAV", newSViv (CORO_SAVE_DEFAV));	1400	newCONSTSUB (coro_state_stash, "CC_TRACE_LINE", newSViv (CC_TRACE_LINE));
1125	newCONSTSUB (coro_state_stash, "SAVE_DEFSV", newSViv (CORO_SAVE_DEFSV));
1126	newCONSTSUB (coro_state_stash, "SAVE_ERRSV", newSViv (CORO_SAVE_ERRSV));
1127	newCONSTSUB (coro_state_stash, "SAVE_IRSSV", newSViv (CORO_SAVE_IRSSV));
1128	newCONSTSUB (coro_state_stash, "SAVE_ALL", newSViv (CORO_SAVE_ALL));	1401	newCONSTSUB (coro_state_stash, "CC_TRACE_ALL" , newSViv (CC_TRACE_ALL));
1129		1402
1130	main_mainstack = PL_mainstack;	1403	main_mainstack = PL_mainstack;
		1404	main_top_env = PL_top_env;
		1405
		1406	while (main_top_env->je_prev)
		1407	main_top_env = main_top_env->je_prev;
1131		1408
1132	coroapi.ver = CORO_API_VERSION;	1409	coroapi.ver = CORO_API_VERSION;
1133	coroapi.transfer = api_transfer;	1410	coroapi.transfer = api_transfer;
1134		1411
1135	assert (("PRIO_NORMAL must be 0", !PRIO_NORMAL));	1412	assert (("PRIO_NORMAL must be 0", !PRIO_NORMAL));
…		…
1142	struct coro *coro;	1419	struct coro *coro;
1143	HV *hv;	1420	HV *hv;
1144	int i;	1421	int i;
1145		1422
1146	Newz (0, coro, 1, struct coro);	1423	Newz (0, coro, 1, struct coro);
1147	coro->args = newAV ();	1424	coro->args = newAV ();
1148	coro->save = CORO_SAVE_ALL;
1149	coro->flags = CF_NEW;	1425	coro->flags = CF_NEW;
1150		1426
		1427	if (coro_first) coro_first->prev = coro;
		1428	coro->next = coro_first;
		1429	coro_first = coro;
		1430
1151	hv = newHV ();	1431	coro->hv = hv = newHV ();
1152	sv_magicext ((SV *)hv, 0, PERL_MAGIC_ext, &coro_state_vtbl, (char *)coro, 0)->mg_flags |= MGf_DUP;	1432	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));	1433	RETVAL = sv_bless (newRV_noinc ((SV *)hv), gv_stashpv (klass, 1));
1154		1434
1155	for (i = 1; i < items; i++)	1435	for (i = 1; i < items; i++)
1156	av_push (coro->args, newSVsv (ST (i)));	1436	av_push (coro->args, newSVsv (ST (i)));
1157	}	1437	}
1158	OUTPUT:	1438	OUTPUT:
1159	RETVAL	1439	RETVAL
1160		1440
1161	int	1441	# these not obviously related functions are all rolled into the same xs
1162	save (SV *coro, int new_save = -1)	1442	# function to increase chances that they all will call transfer with the same
1163	CODE:	1443	# stack offset
1164	RETVAL = api_save (coro, new_save);
1165	OUTPUT:
1166	RETVAL
1167
1168	void	1444	void
1169	_set_stacklevel (...)	1445	_set_stacklevel (...)
1170	ALIAS:	1446	ALIAS:
1171	Coro::State::transfer = 1	1447	Coro::State::transfer = 1
1172	Coro::schedule = 2	1448	Coro::schedule = 2
…		…
1185		1461
1186	case 1:	1462	case 1:
1187	if (items != 2)	1463	if (items != 2)
1188	croak ("Coro::State::transfer (prev,next) expects two arguments, not %d", items);	1464	croak ("Coro::State::transfer (prev,next) expects two arguments, not %d", items);
1189		1465
1190	prepare_transfer (&ta, ST (0), ST (1));	1466	prepare_transfer (aTHX_ &ta, ST (0), ST (1));
1191	break;	1467	break;
1192		1468
1193	case 2:	1469	case 2:
1194	prepare_schedule (&ta);	1470	prepare_schedule (aTHX_ &ta);
1195	break;	1471	break;
1196		1472
1197	case 3:	1473	case 3:
1198	prepare_cede (&ta);	1474	prepare_cede (aTHX_ &ta);
1199	break;	1475	break;
1200		1476
1201	case 4:	1477	case 4:
1202	if (!prepare_cede_notself (&ta))	1478	if (!prepare_cede_notself (aTHX_ &ta))
1203	XSRETURN_EMPTY;	1479	XSRETURN_EMPTY;
1204		1480
1205	break;	1481	break;
1206	}	1482	}
1207		1483
…		…
1213	}	1489	}
1214		1490
1215	bool	1491	bool
1216	_destroy (SV *coro_sv)	1492	_destroy (SV *coro_sv)
1217	CODE:	1493	CODE:
1218	RETVAL = coro_state_destroy (SvSTATE (coro_sv));	1494	RETVAL = coro_state_destroy (aTHX_ SvSTATE (coro_sv));
1219	OUTPUT:	1495	OUTPUT:
1220	RETVAL	1496	RETVAL
1221		1497
1222	void	1498	void
1223	_exit (code)	1499	_exit (code)
…		…
1225	PROTOTYPE: $	1501	PROTOTYPE: $
1226	CODE:	1502	CODE:
1227	_exit (code);	1503	_exit (code);
1228		1504
1229	int	1505	int
		1506	cctx_stacksize (int new_stacksize = 0)
		1507	CODE:
		1508	RETVAL = coro_stacksize;
		1509	if (new_stacksize)
		1510	coro_stacksize = new_stacksize;
		1511	OUTPUT:
		1512	RETVAL
		1513
		1514	int
1230	cctx_count ()	1515	cctx_count ()
1231	CODE:	1516	CODE:
1232	RETVAL = cctx_count;	1517	RETVAL = cctx_count;
1233	OUTPUT:	1518	OUTPUT:
1234	RETVAL	1519	RETVAL
…		…
1238	CODE:	1523	CODE:
1239	RETVAL = cctx_idle;	1524	RETVAL = cctx_idle;
1240	OUTPUT:	1525	OUTPUT:
1241	RETVAL	1526	RETVAL
1242		1527
		1528	void
		1529	list ()
		1530	PPCODE:
		1531	{
		1532	struct coro *coro;
		1533	for (coro = coro_first; coro; coro = coro->next)
		1534	if (coro->hv)
		1535	XPUSHs (sv_2mortal (newRV_inc ((SV *)coro->hv)));
		1536	}
		1537
		1538	void
		1539	call (Coro::State coro, SV *coderef)
		1540	ALIAS:
		1541	eval = 1
		1542	CODE:
		1543	{
		1544	if (coro->mainstack)
		1545	{
		1546	struct coro temp;
		1547	Zero (&temp, 1, struct coro);
		1548
		1549	if (!(coro->flags & CF_RUNNING))
		1550	{
		1551	save_perl (aTHX_ &temp);
		1552	load_perl (aTHX_ coro);
		1553	}
		1554
		1555	{
		1556	dSP;
		1557	ENTER;
		1558	SAVETMPS;
		1559	PUSHMARK (SP);
		1560	PUTBACK;
		1561	if (ix)
		1562	eval_sv (coderef, 0);
		1563	else
		1564	call_sv (coderef, G_KEEPERR | G_EVAL | G_VOID | G_DISCARD);
		1565	SPAGAIN;
		1566	FREETMPS;
		1567	LEAVE;
		1568	PUTBACK;
		1569	}
		1570
		1571	if (!(coro->flags & CF_RUNNING))
		1572	{
		1573	save_perl (aTHX_ coro);
		1574	load_perl (aTHX_ &temp);
		1575	}
		1576	}
		1577	}
		1578
		1579	SV *
		1580	is_ready (Coro::State coro)
		1581	PROTOTYPE: $
		1582	ALIAS:
		1583	is_ready = CF_READY
		1584	is_running = CF_RUNNING
		1585	is_new = CF_NEW
		1586	is_destroyed = CF_DESTROYED
		1587	CODE:
		1588	RETVAL = boolSV (coro->flags & ix);
		1589	OUTPUT:
		1590	RETVAL
		1591
		1592	void
		1593	api_trace (SV *coro, int flags = CC_TRACE | CC_TRACE_SUB)
		1594
		1595	SV *
		1596	has_stack (Coro::State coro)
		1597	PROTOTYPE: $
		1598	CODE:
		1599	RETVAL = boolSV (!!coro->cctx);
		1600	OUTPUT:
		1601	RETVAL
		1602
		1603	int
		1604	is_traced (Coro::State coro)
		1605	PROTOTYPE: $
		1606	CODE:
		1607	RETVAL = (coro->cctx ? coro->cctx->flags : 0) & CC_TRACE_ALL;
		1608	OUTPUT:
		1609	RETVAL
		1610
		1611	IV
		1612	rss (Coro::State coro)
		1613	PROTOTYPE: $
		1614	ALIAS:
		1615	usecount = 1
		1616	CODE:
		1617	switch (ix)
		1618	{
		1619	case 0: RETVAL = coro_rss (aTHX_ coro); break;
		1620	case 1: RETVAL = coro->usecount; break;
		1621	}
		1622	OUTPUT:
		1623	RETVAL
		1624
		1625
1243	MODULE = Coro::State PACKAGE = Coro	1626	MODULE = Coro::State PACKAGE = Coro
1244		1627
1245	BOOT:	1628	BOOT:
1246	{	1629	{
1247	int i;	1630	int i;
		1631
		1632	sv_pool_rss = get_sv ("Coro::POOL_RSS" , TRUE);
		1633	sv_pool_size = get_sv ("Coro::POOL_SIZE" , TRUE);
		1634	av_async_pool = get_av ("Coro::async_pool", TRUE);
		1635
		1636	coro_current = get_sv ("Coro::current", FALSE);
		1637	SvREADONLY_on (coro_current);
1248		1638
1249	coro_stash = gv_stashpv ("Coro", TRUE);	1639	coro_stash = gv_stashpv ("Coro", TRUE);
1250		1640
1251	newCONSTSUB (coro_stash, "PRIO_MAX", newSViv (PRIO_MAX));	1641	newCONSTSUB (coro_stash, "PRIO_MAX", newSViv (PRIO_MAX));
1252	newCONSTSUB (coro_stash, "PRIO_HIGH", newSViv (PRIO_HIGH));	1642	newCONSTSUB (coro_stash, "PRIO_HIGH", newSViv (PRIO_HIGH));
1253	newCONSTSUB (coro_stash, "PRIO_NORMAL", newSViv (PRIO_NORMAL));	1643	newCONSTSUB (coro_stash, "PRIO_NORMAL", newSViv (PRIO_NORMAL));
1254	newCONSTSUB (coro_stash, "PRIO_LOW", newSViv (PRIO_LOW));	1644	newCONSTSUB (coro_stash, "PRIO_LOW", newSViv (PRIO_LOW));
1255	newCONSTSUB (coro_stash, "PRIO_IDLE", newSViv (PRIO_IDLE));	1645	newCONSTSUB (coro_stash, "PRIO_IDLE", newSViv (PRIO_IDLE));
1256	newCONSTSUB (coro_stash, "PRIO_MIN", newSViv (PRIO_MIN));	1646	newCONSTSUB (coro_stash, "PRIO_MIN", newSViv (PRIO_MIN));
1257		1647
1258	coro_current = get_sv ("Coro::current", FALSE);
1259	SvREADONLY_on (coro_current);
1260
1261	for (i = PRIO_MAX - PRIO_MIN + 1; i--; )	1648	for (i = PRIO_MAX - PRIO_MIN + 1; i--; )
1262	coro_ready[i] = newAV ();	1649	coro_ready[i] = newAV ();
1263		1650
1264	{	1651	{
1265	SV *sv = perl_get_sv("Coro::API", 1);	1652	SV *sv = perl_get_sv("Coro::API", 1);
1266		1653
1267	coroapi.schedule = api_schedule;	1654	coroapi.schedule = api_schedule;
1268	coroapi.save = api_save;
1269	coroapi.cede = api_cede;	1655	coroapi.cede = api_cede;
1270	coroapi.cede_notself = api_cede_notself;	1656	coroapi.cede_notself = api_cede_notself;
1271	coroapi.ready = api_ready;	1657	coroapi.ready = api_ready;
1272	coroapi.is_ready = api_is_ready;	1658	coroapi.is_ready = api_is_ready;
1273	coroapi.nready = &coro_nready;	1659	coroapi.nready = &coro_nready;
…		…
1314	CODE:	1700	CODE:
1315	RETVAL = boolSV (api_ready (self));	1701	RETVAL = boolSV (api_ready (self));
1316	OUTPUT:	1702	OUTPUT:
1317	RETVAL	1703	RETVAL
1318		1704
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	1705	int
1328	nready (...)	1706	nready (...)
1329	PROTOTYPE:	1707	PROTOTYPE:
1330	CODE:	1708	CODE:
1331	RETVAL = coro_nready;	1709	RETVAL = coro_nready;
1332	OUTPUT:	1710	OUTPUT:
1333	RETVAL	1711	RETVAL
1334		1712
		1713	# for async_pool speedup
		1714	void
		1715	_pool_1 (SV *cb)
		1716	CODE:
		1717	{
		1718	struct coro *coro = SvSTATE (coro_current);
		1719	HV *hv = (HV *)SvRV (coro_current);
		1720	AV *defav = GvAV (PL_defgv);
		1721	SV *invoke = hv_delete (hv, "_invoke", sizeof ("_invoke") - 1, 0);
		1722	AV *invoke_av;
		1723	int i, len;
		1724
		1725	if (!invoke)
		1726	croak ("\3terminate\2\n");
		1727
		1728	SvREFCNT_dec (coro->asp_deffh);
		1729	coro->asp_deffh = SvREFCNT_inc (PL_defoutgv);
		1730
		1731	hv_store (hv, "desc", sizeof ("desc") - 1,
		1732	newSVpvn ("[async_pool]", sizeof ("[async_pool]") - 1), 0);
		1733
		1734	invoke_av = (AV *)SvRV (invoke);
		1735	len = av_len (invoke_av);
		1736
		1737	sv_setsv (cb, AvARRAY (invoke_av)[0]);
		1738
		1739	if (len > 0)
		1740	{
		1741	av_fill (defav, len - 1);
		1742	for (i = 0; i < len; ++i)
		1743	av_store (defav, i, SvREFCNT_inc (AvARRAY (invoke_av)[i + 1]));
		1744	}
		1745
		1746	SvREFCNT_dec (invoke);
		1747	}
		1748
		1749	void
		1750	_pool_2 (SV *cb)
		1751	CODE:
		1752	{
		1753	struct coro *coro = SvSTATE (coro_current);
		1754
		1755	sv_setsv (cb, &PL_sv_undef);
		1756
		1757	SvREFCNT_dec (PL_defoutgv); PL_defoutgv = coro->asp_deffh;
		1758	coro->asp_deffh = 0;
		1759
		1760	if (coro_rss (aTHX_ coro) > SvIV (sv_pool_rss)
		1761	|| av_len (av_async_pool) + 1 >= SvIV (sv_pool_size))
		1762	croak ("\3terminate\2\n");
		1763
		1764	av_clear (GvAV (PL_defgv));
		1765	hv_store ((HV *)SvRV (coro_current), "desc", sizeof ("desc") - 1,
		1766	newSVpvn ("[async_pool idle]", sizeof ("[async_pool idle]") - 1), 0);
		1767
		1768	coro->prio = 0;
		1769
		1770	if (coro->cctx && (coro->cctx->flags & CC_TRACE))
		1771	api_trace (coro_current, 0);
		1772
		1773	av_push (av_async_pool, newSVsv (coro_current));
		1774	}
		1775
		1776
1335	MODULE = Coro::State PACKAGE = Coro::AIO	1777	MODULE = Coro::State PACKAGE = Coro::AIO
1336		1778
1337	SV *	1779	SV *
1338	_get_state ()	1780	_get_state ()
1339	CODE:	1781	CODE:

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