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Comparing Coro/Coro/State.xs (file contents):
Revision 1.130 by root, Mon Dec 25 13:25:55 2006 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
97	# define attribute(x) __attribute__(x)	101	# define attribute(x) __attribute__(x)
		102	# define BARRIER __asm__ __volatile__ ("" : : : "memory")
98	#else	103	#else
99	# define attribute(x)	104	# define attribute(x)
		105	# define BARRIER
100	#endif	106	#endif
101		107
102	#define NOINLINE attribute ((noinline))	108	#define NOINLINE attribute ((noinline))
103		109
104	#include "CoroAPI.h"	110	#include "CoroAPI.h"
…		…
110	#else	116	#else
111	# define LOCK (void)0	117	# define LOCK (void)0
112	# define UNLOCK (void)0	118	# define UNLOCK (void)0
113	#endif	119	#endif
114		120
		121	/* helper storage struct for Coro::AIO */
115	struct io_state	122	struct io_state
116	{	123	{
117	int errorno;	124	int errorno;
118	I32 laststype;	125	I32 laststype;
119	int laststatval;	126	int laststatval;
120	Stat_t statcache;	127	Stat_t statcache;
121	};	128	};
122		129
		130	static size_t coro_stacksize = CORO_STACKSIZE;
123	static struct CoroAPI coroapi;	131	static struct CoroAPI coroapi;
124	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;
125	static HV *coro_state_stash, *coro_stash;	134	static HV *coro_state_stash, *coro_stash;
126	static SV *coro_mortal; /* will be freed after next transfer */	135	static SV *coro_mortal; /* will be freed after next transfer */
127		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
128	static struct coro_cctx *cctx_first;	144	static struct coro_cctx *cctx_first;
129	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	};
130		155
131	/* this is a structure representing a c-level coroutine */	156	/* this is a structure representing a c-level coroutine */
132	typedef struct coro_cctx {	157	typedef struct coro_cctx {
133	struct coro_cctx *next;	158	struct coro_cctx *next;
134		159
135	/* the stack */	160	/* the stack */
136	void *sptr;	161	void *sptr;
137	long ssize; /* positive == mmap, otherwise malloc */	162	size_t ssize;
138		163
139	/* cpu state */	164	/* cpu state */
140	void *idle_sp; /* sp of top-level transfer/schedule/cede call */	165	void *idle_sp; /* sp of top-level transfer/schedule/cede call */
		166	JMPENV *idle_te; /* same as idle_sp, but for top_env, TODO: remove once stable */
141	JMPENV *top_env;	167	JMPENV *top_env;
142	coro_context cctx;	168	coro_context cctx;
143		169
144	int inuse;
145
146	#if USE_VALGRIND	170	#if CORO_USE_VALGRIND
147	int valgrind_id;	171	int valgrind_id;
148	#endif	172	#endif
		173	unsigned char flags;
149	} coro_cctx;	174	} coro_cctx;
150		175
151	enum {	176	enum {
152	CF_RUNNING = 0x0001, /* coroutine is running */	177	CF_RUNNING = 0x0001, /* coroutine is running */
153	CF_READY = 0x0002, /* coroutine is ready */	178	CF_READY = 0x0002, /* coroutine is ready */
154	CF_NEW = 0x0004, /* ahs never been switched to */	179	CF_NEW = 0x0004, /* has never been switched to */
		180	CF_DESTROYED = 0x0008, /* coroutine data has been freed */
155	};	181	};
156		182
157	/* this is a structure representing a perl-level coroutine */	183	/* this is a structure representing a perl-level coroutine */
158	struct coro {	184	struct coro {
159	/* the c coroutine allocated to this perl coroutine, if any */	185	/* the c coroutine allocated to this perl coroutine, if any */
160	coro_cctx *cctx;	186	coro_cctx *cctx;
161		187
162	/* data associated with this coroutine (initial args) */	188	/* data associated with this coroutine (initial args) */
163	AV *args;	189	AV *args;
164	int refcnt;	190	int refcnt;
165	int save; /* CORO_SAVE flags */
166	int flags; /* CF_ flags */	191	int flags; /* CF_ flags */
167		192
168	/* optionally saved, might be zero */	193	/* optionally saved, might be zero */
169	AV *defav; /* @_ */	194	AV *defav; /* @_ */
170	SV *defsv; /* $_ */	195	SV *defsv; /* $_ */
171	SV *errsv; /* $@ */	196	SV *errsv; /* $@ */
		197	GV *deffh; /* default filehandle */
172	SV *irssv; /* $/ */	198	SV *irssv; /* $/ */
173	SV *irssv_sv; /* real $/ cache */	199	SV *irssv_sv; /* real $/ cache */
174		200
175	#define VAR(name,type) type name;	201	#define VAR(name,type) type name;
176	# include "state.h"	202	# include "state.h"
177	#undef VAR	203	#undef VAR
178		204
		205	/* statistics */
		206	int usecount; /* number of transfers to this coro */
		207
179	/* coro process data */	208	/* coro process data */
180	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 */
181	};	218	};
182		219
183	typedef struct coro *Coro__State;	220	typedef struct coro *Coro__State;
184	typedef struct coro *Coro__State_or_hashref;	221	typedef struct coro *Coro__State_or_hashref;
185		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
186	static AV *	240	static AV *
187	coro_clone_padlist (CV *cv)	241	coro_clone_padlist (pTHX_ CV *cv)
188	{	242	{
189	AV *padlist = CvPADLIST (cv);	243	AV *padlist = CvPADLIST (cv);
190	AV *newpadlist, *newpad;	244	AV *newpadlist, *newpad;
191		245
192	newpadlist = newAV ();	246	newpadlist = newAV ();
…		…
204		258
205	return newpadlist;	259	return newpadlist;
206	}	260	}
207		261
208	static void	262	static void
209	free_padlist (AV *padlist)	263	free_padlist (pTHX_ AV *padlist)
210	{	264	{
211	/* may be during global destruction */	265	/* may be during global destruction */
212	if (SvREFCNT (padlist))	266	if (SvREFCNT (padlist))
213	{	267	{
214	I32 i = AvFILLp (padlist);	268	I32 i = AvFILLp (padlist);
…		…
235	AV *padlist;	289	AV *padlist;
236	AV *av = (AV *)mg->mg_obj;	290	AV *av = (AV *)mg->mg_obj;
237		291
238	/* casting is fun. */	292	/* casting is fun. */
239	while (&PL_sv_undef != (SV *)(padlist = (AV *)av_pop (av)))	293	while (&PL_sv_undef != (SV *)(padlist = (AV *)av_pop (av)))
240	free_padlist (padlist);	294	free_padlist (aTHX_ padlist);
241		295
242	SvREFCNT_dec (av);	296	SvREFCNT_dec (av);
243		297
244	return 0;	298	return 0;
245	}	299	}
…		…
253	? SvMAGIC (cv)->mg_type == PERL_MAGIC_coro \	307	? SvMAGIC (cv)->mg_type == PERL_MAGIC_coro \
254	? SvMAGIC (cv) \	308	? SvMAGIC (cv) \
255	: mg_find ((SV *)cv, PERL_MAGIC_coro) \	309	: mg_find ((SV *)cv, PERL_MAGIC_coro) \
256	: 0	310	: 0
257		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
258	/* the next two functions merely cache the padlists */	338	/* the next two functions merely cache the padlists */
259	static void	339	static void
260	get_padlist (CV *cv)	340	get_padlist (pTHX_ CV *cv)
261	{	341	{
262	MAGIC *mg = CORO_MAGIC (cv);	342	MAGIC *mg = CORO_MAGIC (cv);
263	AV *av;	343	AV *av;
264		344
265	if (mg && AvFILLp ((av = (AV *)mg->mg_obj)) >= 0)	345	if (mg && AvFILLp ((av = (AV *)mg->mg_obj)) >= 0)
266	CvPADLIST (cv) = (AV *)AvARRAY (av)[AvFILLp (av)--];	346	CvPADLIST (cv) = (AV *)AvARRAY (av)[AvFILLp (av)--];
267	else	347	else
268	{	348	{
269	#if PREFER_PERL_FUNCTIONS	349	#if CORO_PREFER_PERL_FUNCTIONS
270	/* this is probably cleaner, but also slower? */	350	/* this is probably cleaner, but also slower? */
271	CV *cp = Perl_cv_clone (cv);	351	CV *cp = Perl_cv_clone (cv);
272	CvPADLIST (cv) = CvPADLIST (cp);	352	CvPADLIST (cv) = CvPADLIST (cp);
273	CvPADLIST (cp) = 0;	353	CvPADLIST (cp) = 0;
274	SvREFCNT_dec (cp);	354	SvREFCNT_dec (cp);
275	#else	355	#else
276	CvPADLIST (cv) = coro_clone_padlist (cv);	356	CvPADLIST (cv) = coro_clone_padlist (aTHX_ cv);
277	#endif	357	#endif
278	}	358	}
279	}	359	}
280		360
281	static void	361	static void
282	put_padlist (CV *cv)	362	put_padlist (pTHX_ CV *cv)
283	{	363	{
284	MAGIC *mg = CORO_MAGIC (cv);	364	MAGIC *mg = CORO_MAGIC (cv);
285	AV *av;	365	AV *av;
286		366
287	if (!mg)	367	if (!mg)
…		…
298	av_extend (av, AvMAX (av) + 1);	378	av_extend (av, AvMAX (av) + 1);
299		379
300	AvARRAY (av)[++AvFILLp (av)] = (SV *)CvPADLIST (cv);	380	AvARRAY (av)[++AvFILLp (av)] = (SV *)CvPADLIST (cv);
301	}	381	}
302		382
303	#define SB do {	383	/** load & save, init *******************************************************/
304	#define SE } while (0)
305		384
306	#define REPLACE_SV(sv,val) SB SvREFCNT_dec (sv); (sv) = (val); (val) = 0; SE
307
308	static void	385	static void
309	load_perl (Coro__State c)	386	load_perl (pTHX_ Coro__State c)
310	{	387	{
311	#define VAR(name,type) PL_ ## name = c->name;	388	#define VAR(name,type) PL_ ## name = c->name;
312	# include "state.h"	389	# include "state.h"
313	#undef VAR	390	#undef VAR
314		391
315	if (c->defav) REPLACE_SV (GvAV (PL_defgv), c->defav);	392	GvSV (PL_defgv) = c->defsv;
316	if (c->defsv) REPLACE_SV (DEFSV , c->defsv);	393	GvAV (PL_defgv) = c->defav;
317	if (c->errsv) REPLACE_SV (ERRSV , c->errsv);	394	GvSV (PL_errgv) = c->errsv;
318	if (c->irssv)	395	PL_defoutgv = c->deffh;
319	{	396	PL_rs = c->irssv;
320	if (c->irssv == PL_rs || sv_eq (PL_rs, c->irssv))	397	GvSV (irsgv) = c->irssv_sv;
321	SvREFCNT_dec (c->irssv);
322	else
323	{
324	REPLACE_SV (PL_rs, c->irssv);
325	if (!c->irssv_sv) c->irssv_sv = get_sv ("/", 0);
326	sv_setsv (c->irssv_sv, PL_rs);
327	}
328	}
329		398
330	{	399	{
331	dSP;	400	dSP;
332	CV *cv;	401	CV *cv;
333		402
334	/* now do the ugly restore mess */	403	/* now do the ugly restore mess */
335	while ((cv = (CV *)POPs))	404	while ((cv = (CV *)POPs))
336	{	405	{
337	put_padlist (cv); /* mark this padlist as available */	406	put_padlist (aTHX_ cv); /* mark this padlist as available */
338	CvDEPTH (cv) = PTR2IV (POPs);	407	CvDEPTH (cv) = PTR2IV (POPs);
339	CvPADLIST (cv) = (AV *)POPs;	408	CvPADLIST (cv) = (AV *)POPs;
340	}	409	}
341		410
342	PUTBACK;	411	PUTBACK;
343	}	412	}
344	}	413	}
345		414
346	static void	415	static void
347	save_perl (Coro__State c)	416	save_perl (pTHX_ Coro__State c)
348	{	417	{
349	{	418	{
350	dSP;	419	dSP;
351	I32 cxix = cxstack_ix;	420	I32 cxix = cxstack_ix;
352	PERL_CONTEXT *ccstk = cxstack;	421	PERL_CONTEXT *ccstk = cxstack;
…		…
355	/*	424	/*
356	* 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
357	* (and reinitialize) all cv's in the whole callchain :(	426	* (and reinitialize) all cv's in the whole callchain :(
358	*/	427	*/
359		428
360	EXTEND (SP, 3 + 1);
361	PUSHs (Nullsv);	429	XPUSHs (Nullsv);
362	/* this loop was inspired by pp_caller */	430	/* this loop was inspired by pp_caller */
363	for (;;)	431	for (;;)
364	{	432	{
365	while (cxix >= 0)	433	while (cxix >= 0)
366	{	434	{
367	PERL_CONTEXT *cx = &ccstk[cxix--];	435	PERL_CONTEXT *cx = &ccstk[cxix--];
368		436
369	if (CxTYPE (cx) == CXt_SUB)	437	if (CxTYPE (cx) == CXt_SUB || CxTYPE (cx) == CXt_FORMAT)
370	{	438	{
371	CV *cv = cx->blk_sub.cv;	439	CV *cv = cx->blk_sub.cv;
372		440
373	if (CvDEPTH (cv))	441	if (CvDEPTH (cv))
374	{	442	{
…		…
376	PUSHs ((SV *)CvPADLIST (cv));	444	PUSHs ((SV *)CvPADLIST (cv));
377	PUSHs (INT2PTR (SV *, CvDEPTH (cv)));	445	PUSHs (INT2PTR (SV *, CvDEPTH (cv)));
378	PUSHs ((SV *)cv);	446	PUSHs ((SV *)cv);
379		447
380	CvDEPTH (cv) = 0;	448	CvDEPTH (cv) = 0;
381	get_padlist (cv);	449	get_padlist (aTHX_ cv);
382	}	450	}
383	}	451	}
384	}	452	}
385		453
386	if (top_si->si_type == PERLSI_MAIN)	454	if (top_si->si_type == PERLSI_MAIN)
387	break;	455	break;
388		456
389	top_si = top_si->si_prev;	457	top_si = top_si->si_prev;
390	ccstk = top_si->si_cxstack;	458	ccstk = top_si->si_cxstack;
391	cxix = top_si->si_cxix;	459	cxix = top_si->si_cxix;
392	}	460	}
393		461
394	PUTBACK;	462	PUTBACK;
395	}	463	}
396		464
397	c->defav = c->save & CORO_SAVE_DEFAV ? (AV *)SvREFCNT_inc (GvAV (PL_defgv)) : 0;	465	c->defav = GvAV (PL_defgv);
398	c->defsv = c->save & CORO_SAVE_DEFSV ? SvREFCNT_inc (DEFSV) : 0;	466	c->defsv = DEFSV;
399	c->errsv = c->save & CORO_SAVE_ERRSV ? SvREFCNT_inc (ERRSV) : 0;	467	c->errsv = ERRSV;
400	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);
401		471
402	#define VAR(name,type)c->name = PL_ ## name;	472	#define VAR(name,type)c->name = PL_ ## name;
403	# include "state.h"	473	# include "state.h"
404	#undef VAR	474	#undef VAR
405	}	475	}
…		…
408	* allocate various perl stacks. This is an exact copy	478	* allocate various perl stacks. This is an exact copy
409	* of perl.c:init_stacks, except that it uses less memory	479	* of perl.c:init_stacks, except that it uses less memory
410	* on the (sometimes correct) assumption that coroutines do	480	* on the (sometimes correct) assumption that coroutines do
411	* not usually need a lot of stackspace.	481	* not usually need a lot of stackspace.
412	*/	482	*/
413	#if PREFER_PERL_FUNCTIONS	483	#if CORO_PREFER_PERL_FUNCTIONS
414	# define coro_init_stacks init_stacks	484	# define coro_init_stacks init_stacks
415	#else	485	#else
416	static void	486	static void
417	coro_init_stacks ()	487	coro_init_stacks (pTHX)
418	{	488	{
419	PL_curstackinfo = new_stackinfo(128, 1024/sizeof(PERL_CONTEXT));	489	PL_curstackinfo = new_stackinfo(64, 6);
420	PL_curstackinfo->si_type = PERLSI_MAIN;	490	PL_curstackinfo->si_type = PERLSI_MAIN;
421	PL_curstack = PL_curstackinfo->si_stack;	491	PL_curstack = PL_curstackinfo->si_stack;
422	PL_mainstack = PL_curstack; /* remember in case we switch stacks */	492	PL_mainstack = PL_curstack; /* remember in case we switch stacks */
423		493
424	PL_stack_base = AvARRAY(PL_curstack);	494	PL_stack_base = AvARRAY(PL_curstack);
425	PL_stack_sp = PL_stack_base;	495	PL_stack_sp = PL_stack_base;
426	PL_stack_max = PL_stack_base + AvMAX(PL_curstack);	496	PL_stack_max = PL_stack_base + AvMAX(PL_curstack);
427		497
428	New(50,PL_tmps_stack,128,SV*);	498	New(50,PL_tmps_stack,64,SV*);
429	PL_tmps_floor = -1;	499	PL_tmps_floor = -1;
430	PL_tmps_ix = -1;	500	PL_tmps_ix = -1;
431	PL_tmps_max = 128;	501	PL_tmps_max = 64;
432		502
433	New(54,PL_markstack,32,I32);	503	New(54,PL_markstack,16,I32);
434	PL_markstack_ptr = PL_markstack;	504	PL_markstack_ptr = PL_markstack;
435	PL_markstack_max = PL_markstack + 32;	505	PL_markstack_max = PL_markstack + 16;
436		506
437	#ifdef SET_MARK_OFFSET	507	#ifdef SET_MARK_OFFSET
438	SET_MARK_OFFSET;	508	SET_MARK_OFFSET;
439	#endif	509	#endif
440		510
441	New(54,PL_scopestack,32,I32);	511	New(54,PL_scopestack,16,I32);
442	PL_scopestack_ix = 0;	512	PL_scopestack_ix = 0;
443	PL_scopestack_max = 32;	513	PL_scopestack_max = 16;
444		514
445	New(54,PL_savestack,64,ANY);	515	New(54,PL_savestack,64,ANY);
446	PL_savestack_ix = 0;	516	PL_savestack_ix = 0;
447	PL_savestack_max = 64;	517	PL_savestack_max = 64;
448		518
449	#if !PERL_VERSION_ATLEAST (5,9,0)	519	#if !PERL_VERSION_ATLEAST (5,9,0)
450	New(54,PL_retstack,16,OP*);	520	New(54,PL_retstack,4,OP*);
451	PL_retstack_ix = 0;	521	PL_retstack_ix = 0;
452	PL_retstack_max = 16;	522	PL_retstack_max = 4;
453	#endif	523	#endif
454	}	524	}
455	#endif	525	#endif
456		526
457	/*	527	/*
458	* destroy the stacks, the callchain etc...	528	* destroy the stacks, the callchain etc...
459	*/	529	*/
460	static void	530	static void
461	coro_destroy_stacks ()	531	coro_destroy_stacks (pTHX)
462	{	532	{
463	if (!IN_DESTRUCT)
464	{
465	/* restore all saved variables and stuff */
466	LEAVE_SCOPE (0);
467	assert (PL_tmps_floor == -1);
468
469	/* free all temporaries */
470	FREETMPS;
471	assert (PL_tmps_ix == -1);
472
473	POPSTACK_TO (PL_mainstack);
474	}
475
476	while (PL_curstackinfo->si_next)	533	while (PL_curstackinfo->si_next)
477	PL_curstackinfo = PL_curstackinfo->si_next;	534	PL_curstackinfo = PL_curstackinfo->si_next;
478		535
479	while (PL_curstackinfo)	536	while (PL_curstackinfo)
480	{	537	{
…		…
495	#if !PERL_VERSION_ATLEAST (5,9,0)	552	#if !PERL_VERSION_ATLEAST (5,9,0)
496	Safefree (PL_retstack);	553	Safefree (PL_retstack);
497	#endif	554	#endif
498	}	555	}
499		556
500	static void	557	static size_t
501	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)
502	{	592	{
503	/*	593	/*
504	* emulate part of the perl startup here.	594	* emulate part of the perl startup here.
505	*/	595	*/
506
507	coro_init_stacks ();	596	coro_init_stacks (aTHX);
508		597
		598	PL_runops = RUNOPS_DEFAULT;
509	PL_curcop = &PL_compiling;	599	PL_curcop = &PL_compiling;
510	PL_in_eval = EVAL_NULL;	600	PL_in_eval = EVAL_NULL;
		601	PL_comppad = 0;
511	PL_curpm = 0;	602	PL_curpm = 0;
512	PL_localizing = 0;	603	PL_localizing = 0;
513	PL_dirty = 0;	604	PL_dirty = 0;
514	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	}
515		621
516	{	622	{
517	dSP;	623	dSP;
518	LOGOP myop;	624	LOGOP myop;
519		625
520	SvREFCNT_dec (GvAV (PL_defgv));
521	GvAV (PL_defgv) = coro->args; coro->args = 0;
522
523	Zero (&myop, 1, LOGOP);	626	Zero (&myop, 1, LOGOP);
524	myop.op_next = Nullop;	627	myop.op_next = Nullop;
525	myop.op_flags = OPf_WANT_VOID;	628	myop.op_flags = OPf_WANT_VOID;
526		629
527	PUSHMARK (SP);	630	PUSHMARK (SP);
528	XPUSHs ((SV *)get_cv ("Coro::State::_coro_init", FALSE));	631	XPUSHs (av_shift (GvAV (PL_defgv)));
529	PUTBACK;	632	PUTBACK;
530	PL_op = (OP *)&myop;	633	PL_op = (OP *)&myop;
531	PL_op = PL_ppaddr[OP_ENTERSUB](aTHX);	634	PL_op = PL_ppaddr[OP_ENTERSUB](aTHX);
532	SPAGAIN;	635	SPAGAIN;
533	}	636	}
534		637
535	ENTER; /* necessary e.g. for dounwind */	638	ENTER; /* necessary e.g. for dounwind */
536	}	639	}
537		640
538	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
539	free_coro_mortal ()	675	free_coro_mortal (pTHX)
540	{	676	{
541	if (coro_mortal)	677	if (coro_mortal)
542	{	678	{
543	SvREFCNT_dec (coro_mortal);	679	SvREFCNT_dec (coro_mortal);
544	coro_mortal = 0;	680	coro_mortal = 0;
545	}	681	}
546	}	682	}
547		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
548	/* 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 */
549	static void NOINLINE	810	static void NOINLINE
550	prepare_cctx (coro_cctx *cctx)	811	prepare_cctx (pTHX_ coro_cctx *cctx)
551	{	812	{
552	dSP;	813	dSP;
553	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;
554		820
555	Zero (&myop, 1, LOGOP);	821	Zero (&myop, 1, LOGOP);
556	myop.op_next = PL_op;	822	myop.op_next = PL_op;
557	myop.op_flags = OPf_WANT_VOID | OPf_STACKED;	823	myop.op_flags = OPf_WANT_VOID | OPf_STACKED;
558		824
…		…
564	PL_op = (OP *)&myop;	830	PL_op = (OP *)&myop;
565	PL_op = PL_ppaddr[OP_ENTERSUB](aTHX);	831	PL_op = PL_ppaddr[OP_ENTERSUB](aTHX);
566	SPAGAIN;	832	SPAGAIN;
567	}	833	}
568		834
		835	/*
		836	* this is a _very_ stripped down perl interpreter ;)
		837	*/
569	static void	838	static void
570	coro_run (void *arg)	839	coro_run (void *arg)
571	{	840	{
		841	dTHX;
		842
572	/* coro_run is the alternative tail of transfer(), so unlock here. */	843	/* coro_run is the alternative tail of transfer(), so unlock here. */
573	UNLOCK;	844	UNLOCK;
574		845
575	/*	846	/* we now skip the entersub that lead to transfer() */
576	* this is a _very_ stripped down perl interpreter ;)	847	PL_op = PL_op->op_next;
577	*/
578	PL_top_env = &PL_start_env;
579		848
580	/* inject call to cctx_init */	849	/* inject a fake subroutine call to cctx_init */
581	prepare_cctx ((coro_cctx *)arg);	850	prepare_cctx (aTHX_ (coro_cctx *)arg);
582		851
583	/* 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 */
584	PL_restartop = PL_op;	853	PL_restartop = PL_op;
585	perl_run (PL_curinterp);	854	perl_run (PL_curinterp);
586		855
587	fputs ("FATAL: C coroutine fell over the edge of the world, aborting. Did you call exit in a coroutine?\n", stderr);	856	/*
588	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 */
589	}	865	}
590		866
591	static coro_cctx *	867	static coro_cctx *
592	cctx_new ()	868	cctx_new ()
593	{	869	{
594	coro_cctx *cctx;	870	coro_cctx *cctx;
		871	void *stack_start;
		872	size_t stack_size;
595		873
596	++cctx_count;	874	++cctx_count;
597		875
598	Newz (0, cctx, 1, coro_cctx);	876	Newz (0, cctx, 1, coro_cctx);
599		877
600	#if HAVE_MMAP	878	#if HAVE_MMAP
601		879
602	cctx->ssize = ((STACKSIZE * sizeof (long) + PAGESIZE - 1) / PAGESIZE + STACKGUARD) * PAGESIZE;	880	cctx->ssize = ((coro_stacksize * sizeof (long) + PAGESIZE - 1) / PAGESIZE + CORO_STACKGUARD) * PAGESIZE;
603	/* mmap supposedly does allocate-on-write for us */	881	/* mmap supposedly does allocate-on-write for us */
604	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);
605		883
606	if (cctx->sptr == (void *)-1)	884	if (cctx->sptr != (void *)-1)
607	{
608	perror ("FATAL: unable to mmap stack for coroutine");
609	_exit (EXIT_FAILURE);
610	}	885	{
611
612	# if STACKGUARD	886	# if CORO_STACKGUARD
613	mprotect (cctx->sptr, STACKGUARD * PAGESIZE, PROT_NONE);	887	mprotect (cctx->sptr, CORO_STACKGUARD * PAGESIZE, PROT_NONE);
614	# 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);
615		898
616	#else
617
618	cctx->ssize = STACKSIZE * (long)sizeof (long);
619	New (0, cctx->sptr, STACKSIZE, long);
620
621	if (!cctx->sptr)	899	if (!cctx->sptr)
622	{	900	{
623	perror ("FATAL: unable to malloc stack for coroutine");	901	perror ("FATAL: unable to allocate stack for coroutine");
624	_exit (EXIT_FAILURE);	902	_exit (EXIT_FAILURE);
625	}	903	}
626		904
627	#endif	905	stack_start = cctx->sptr;
		906	stack_size = cctx->ssize;
		907	}
628		908
629	#if USE_VALGRIND	909	REGISTER_STACK (cctx, (char *)stack_start, (char *)stack_start + stack_size);
630	cctx->valgrind_id = VALGRIND_STACK_REGISTER (
631	STACKGUARD * PAGESIZE + (char *)cctx->sptr,
632	cctx->ssize + (char *)cctx->sptr
633	);
634	#endif
635
636	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);
637		911
638	return cctx;	912	return cctx;
639	}	913	}
640		914
641	static void	915	static void
…		…
644	if (!cctx)	918	if (!cctx)
645	return;	919	return;
646		920
647	--cctx_count;	921	--cctx_count;
648		922
649	#if USE_VALGRIND	923	#if CORO_USE_VALGRIND
650	VALGRIND_STACK_DEREGISTER (cctx->valgrind_id);	924	VALGRIND_STACK_DEREGISTER (cctx->valgrind_id);
651	#endif	925	#endif
652		926
653	#if HAVE_MMAP	927	#if HAVE_MMAP
		928	if (cctx->flags & CC_MAPPED)
654	munmap (cctx->sptr, cctx->ssize);	929	munmap (cctx->sptr, cctx->ssize);
655	#else	930	else
		931	#endif
656	Safefree (cctx->sptr);	932	Safefree (cctx->sptr);
657	#endif
658		933
659	Safefree (cctx);	934	Safefree (cctx);
660	}	935	}
661		936
662	static coro_cctx *	937	static coro_cctx *
663	cctx_get ()	938	cctx_get (pTHX)
664	{	939	{
665	coro_cctx *cctx;
666
667	if (cctx_first)	940	while (cctx_first)
668	{	941	{
669	cctx = cctx_first;	942	coro_cctx *cctx = cctx_first;
670	cctx_first = cctx->next;	943	cctx_first = cctx->next;
671	--cctx_idle;	944	--cctx_idle;
672	}	945
673	else	946	if (cctx->ssize >= coro_stacksize && !(cctx->flags & CC_NOREUSE))
674	{	947	return cctx;
675	cctx = cctx_new ();	948
676	PL_op = PL_op->op_next;	949	cctx_destroy (cctx);
677	}	950	}
678		951
679	return cctx;	952	return cctx_new ();
680	}	953	}
681		954
682	static void	955	static void
683	cctx_put (coro_cctx *cctx)	956	cctx_put (coro_cctx *cctx)
684	{	957	{
…		…
687	{	960	{
688	coro_cctx *first = cctx_first;	961	coro_cctx *first = cctx_first;
689	cctx_first = first->next;	962	cctx_first = first->next;
690	--cctx_idle;	963	--cctx_idle;
691		964
692	assert (!first->inuse);
693	cctx_destroy (first);	965	cctx_destroy (first);
694	}	966	}
695		967
696	++cctx_idle;	968	++cctx_idle;
697	cctx->next = cctx_first;	969	cctx->next = cctx_first;
698	cctx_first = cctx;	970	cctx_first = cctx;
699	}	971	}
700		972
701	/* never call directly, always through the coro_state_transfer global variable */	973	/** coroutine switching *****************************************************/
		974
702	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
703	transfer (struct coro *prev, struct coro *next)	996	transfer (pTHX_ struct coro *prev, struct coro *next)
704	{	997	{
705	dSTACKLEVEL;	998	dSTACKLEVEL;
706		999
707	/* sometimes transfer is only called to set idle_sp */	1000	/* sometimes transfer is only called to set idle_sp */
708	if (!next)	1001	if (!next)
709	{	1002	{
710	((coro_cctx *)prev)->idle_sp = STACKLEVEL;	1003	((coro_cctx *)prev)->idle_sp = STACKLEVEL;
711	assert (((coro_cctx *)prev)->top_env = PL_top_env); /* just for the side effetc when assert is enabled */	1004	assert (((coro_cctx *)prev)->idle_te = PL_top_env); /* just for the side-effect when asserts are enabled */
712	}	1005	}
713	else if (prev != next)	1006	else if (prev != next)
714	{	1007	{
715	coro_cctx *prev__cctx;	1008	coro_cctx *prev__cctx;
716		1009
717	if (prev->flags & CF_NEW)	1010	if (prev->flags & CF_NEW)
718	{	1011	{
719	/* create a new empty context */	1012	/* create a new empty context */
720	Newz (0, prev->cctx, 1, coro_cctx);	1013	Newz (0, prev->cctx, 1, coro_cctx);
721	prev->cctx->inuse = 1;
722	prev->flags &= ~CF_NEW;	1014	prev->flags &= ~CF_NEW;
723	prev->flags |= CF_RUNNING;	1015	prev->flags |= CF_RUNNING;
724	}	1016	}
725
726	/*TODO: must not croak here */
727	if (!prev->flags & CF_RUNNING)
728	croak ("Coro::State::transfer called with non-running prev Coro::State, but can only transfer from running states");
729
730	if (next->flags & CF_RUNNING)
731	croak ("Coro::State::transfer called with running next Coro::State, but can only transfer to inactive states");
732		1017
733	prev->flags &= ~CF_RUNNING;	1018	prev->flags &= ~CF_RUNNING;
734	next->flags |= CF_RUNNING;	1019	next->flags |= CF_RUNNING;
735		1020
736	LOCK;	1021	LOCK;
…		…
738	if (next->flags & CF_NEW)	1023	if (next->flags & CF_NEW)
739	{	1024	{
740	/* need to start coroutine */	1025	/* need to start coroutine */
741	next->flags &= ~CF_NEW;	1026	next->flags &= ~CF_NEW;
742	/* first get rid of the old state */	1027	/* first get rid of the old state */
743	save_perl (prev);	1028	save_perl (aTHX_ prev);
744	/* setup coroutine call */	1029	/* setup coroutine call */
745	setup_coro (next);	1030	coro_setup (aTHX_ next);
746	/* need a new stack */
747	assert (!next->cctx);
748	}	1031	}
749	else	1032	else
750	{	1033	{
751	/* coroutine already started */	1034	/* coroutine already started */
752	save_perl (prev);	1035	save_perl (aTHX_ prev);
753	load_perl (next);	1036	load_perl (aTHX_ next);
754	}	1037	}
755		1038
756	prev__cctx = prev->cctx;	1039	prev__cctx = prev->cctx;
757		1040
758	/* possibly "free" the cctx */	1041	/* possibly "free" the cctx */
759	if (prev__cctx->idle_sp == STACKLEVEL)	1042	if (prev__cctx->idle_sp == STACKLEVEL && !(prev__cctx->flags & CC_TRACE))
760	{	1043	{
761	/* 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 */
762	assert (PL_top_env == prev__cctx->top_env);	1045	assert (("ERROR: current top_env must equal previous top_env", PL_top_env == prev__cctx->idle_te));
763		1046
764	prev->cctx = 0;	1047	prev->cctx = 0;
765		1048
766	cctx_put (prev__cctx);	1049	cctx_put (prev__cctx);
767	prev__cctx->inuse = 0;
768	}	1050	}
769		1051
		1052	++next->usecount;
		1053
770	if (!next->cctx)	1054	if (!next->cctx)
771	{
772	next->cctx = cctx_get ();	1055	next->cctx = cctx_get (aTHX);
773	assert (!next->cctx->inuse);
774	next->cctx->inuse = 1;
775	}
776		1056
777	if (prev__cctx != next->cctx)	1057	if (prev__cctx != next->cctx)
778	{	1058	{
779	prev__cctx->top_env = PL_top_env;	1059	prev__cctx->top_env = PL_top_env;
780	PL_top_env = next->cctx->top_env;	1060	PL_top_env = next->cctx->top_env;
781	coro_transfer (&prev__cctx->cctx, &next->cctx->cctx);	1061	coro_transfer (&prev__cctx->cctx, &next->cctx->cctx);
782	}	1062	}
783		1063
784	free_coro_mortal ();	1064	free_coro_mortal (aTHX);
785
786	UNLOCK;	1065	UNLOCK;
787	}	1066	}
788	}	1067	}
789		1068
790	struct transfer_args	1069	struct transfer_args
791	{	1070	{
792	struct coro *prev, *next;	1071	struct coro *prev, *next;
793	};	1072	};
794		1073
795	#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)
796		1076
		1077	/** high level stuff ********************************************************/
		1078
797	static void	1079	static int
798	coro_state_destroy (struct coro *coro)	1080	coro_state_destroy (pTHX_ struct coro *coro)
799	{	1081	{
800	if (coro->refcnt--)	1082	if (coro->flags & CF_DESTROYED)
801	return;	1083	return 0;
		1084
		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 */
802		1097
803	if (coro->mainstack && coro->mainstack != main_mainstack)	1098	if (coro->mainstack && coro->mainstack != main_mainstack)
804	{	1099	{
805	struct coro temp;	1100	struct coro temp;
806	Zero (&temp, 1, struct coro);
807	temp.save = CORO_SAVE_ALL;
808		1101
809	if (coro->flags & CF_RUNNING)	1102	if (coro->flags & CF_RUNNING)
810	croak ("FATAL: tried to destroy currently running coroutine");	1103	croak ("FATAL: tried to destroy currently running coroutine");
811		1104
812	save_perl (&temp);	1105	save_perl (aTHX_ &temp);
813	load_perl (coro);	1106	load_perl (aTHX_ coro);
814		1107
815	coro_destroy_stacks ();	1108	coro_destroy (aTHX_ coro);
816		1109
817	load_perl (&temp); /* this will get rid of defsv etc.. */	1110	load_perl (aTHX_ &temp); /* this will get rid of defsv etc.. */
818		1111
819	coro->mainstack = 0;	1112	coro->mainstack = 0;
820	}	1113	}
821		1114
822	cctx_destroy (coro->cctx);	1115	cctx_destroy (coro->cctx);
823	SvREFCNT_dec (coro->args);	1116	SvREFCNT_dec (coro->args);
824	Safefree (coro);	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
		1122	return 1;
825	}	1123	}
826		1124
827	static int	1125	static int
828	coro_state_clear (pTHX_ SV *sv, MAGIC *mg)	1126	coro_state_free (pTHX_ SV *sv, MAGIC *mg)
829	{	1127	{
830	struct coro *coro = (struct coro *)mg->mg_ptr;	1128	struct coro *coro = (struct coro *)mg->mg_ptr;
831	mg->mg_ptr = 0;	1129	mg->mg_ptr = 0;
832		1130
		1131	coro->hv = 0;
		1132
		1133	if (--coro->refcnt < 0)
		1134	{
833	coro_state_destroy (coro);	1135	coro_state_destroy (aTHX_ coro);
		1136	Safefree (coro);
		1137	}
834		1138
835	return 0;	1139	return 0;
836	}	1140	}
837		1141
838	static int	1142	static int
…		…
845	return 0;	1149	return 0;
846	}	1150	}
847		1151
848	static MGVTBL coro_state_vtbl = {	1152	static MGVTBL coro_state_vtbl = {
849	0, 0, 0, 0,	1153	0, 0, 0, 0,
850	coro_state_clear,	1154	coro_state_free,
851	0,	1155	0,
852	#ifdef MGf_DUP	1156	#ifdef MGf_DUP
853	coro_state_dup,	1157	coro_state_dup,
854	#else	1158	#else
855	# define MGf_DUP 0	1159	# define MGf_DUP 0
856	#endif	1160	#endif
857	};	1161	};
858		1162
859	static struct coro *
860	SvSTATE (SV *coro)
861	{
862	HV *stash;
863	MAGIC *mg;
864
865	if (SvROK (coro))
866	coro = SvRV (coro);
867
868	stash = SvSTASH (coro);
869	if (stash != coro_stash && stash != coro_state_stash)
870	{
871	/* very slow, but rare, check */
872	if (!sv_derived_from (sv_2mortal (newRV_inc (coro)), "Coro::State"))
873	croak ("Coro::State object required");
874	}
875
876	mg = SvMAGIC (coro);
877	assert (mg->mg_type == PERL_MAGIC_ext);
878	return (struct coro *)mg->mg_ptr;
879	}
880
881	static void	1163	static void
882	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)
883	{	1165	{
884	ta->prev = SvSTATE (prev_sv);	1166	ta->prev = SvSTATE (prev_sv);
885	ta->next = SvSTATE (next_sv);	1167	ta->next = SvSTATE (next_sv);
		1168	TRANSFER_CHECK (*ta);
886	}	1169	}
887		1170
888	static void	1171	static void
889	api_transfer (SV *prev_sv, SV *next_sv)	1172	api_transfer (SV *prev_sv, SV *next_sv)
890	{	1173	{
		1174	dTHX;
891	struct transfer_args ta;	1175	struct transfer_args ta;
892		1176
893	prepare_transfer (&ta, prev_sv, next_sv);	1177	prepare_transfer (aTHX_ &ta, prev_sv, next_sv);
894	TRANSFER (ta);	1178	TRANSFER (ta);
895	}	1179	}
896		1180
897	static int
898	api_save (SV *coro_sv, int new_save)
899	{
900	struct coro *coro = SvSTATE (coro_sv);
901	int old_save = coro->save;
902
903	if (new_save >= 0)
904	coro->save = new_save;
905
906	return old_save;
907	}
908
909	/** Coro ********************************************************************/	1181	/** Coro ********************************************************************/
910		1182
911	#define PRIO_MAX 3
912	#define PRIO_HIGH 1
913	#define PRIO_NORMAL 0
914	#define PRIO_LOW -1
915	#define PRIO_IDLE -3
916	#define PRIO_MIN -4
917
918	/* for Coro.pm */
919	static SV *coro_current;
920	static AV *coro_ready [PRIO_MAX-PRIO_MIN+1];
921	static int coro_nready;
922
923	static void	1183	static void
924	coro_enq (SV *coro_sv)	1184	coro_enq (pTHX_ SV *coro_sv)
925	{	1185	{
926	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);
927	coro_nready++;
928	}	1187	}
929		1188
930	static SV *	1189	static SV *
931	coro_deq (int min_prio)	1190	coro_deq (pTHX_ int min_prio)
932	{	1191	{
933	int prio = PRIO_MAX - PRIO_MIN;	1192	int prio = PRIO_MAX - PRIO_MIN;
934		1193
935	min_prio -= PRIO_MIN;	1194	min_prio -= PRIO_MIN;
936	if (min_prio < 0)	1195	if (min_prio < 0)
937	min_prio = 0;	1196	min_prio = 0;
938		1197
939	for (prio = PRIO_MAX - PRIO_MIN + 1; --prio >= min_prio; )	1198	for (prio = PRIO_MAX - PRIO_MIN + 1; --prio >= min_prio; )
940	if (AvFILLp (coro_ready [prio]) >= 0)	1199	if (AvFILLp (coro_ready [prio]) >= 0)
941	{
942	coro_nready--;
943	return av_shift (coro_ready [prio]);	1200	return av_shift (coro_ready [prio]);
944	}
945		1201
946	return 0;	1202	return 0;
947	}	1203	}
948		1204
949	static int	1205	static int
950	api_ready (SV *coro_sv)	1206	api_ready (SV *coro_sv)
951	{	1207	{
		1208	dTHX;
952	struct coro *coro;	1209	struct coro *coro;
953		1210
954	if (SvROK (coro_sv))	1211	if (SvROK (coro_sv))
955	coro_sv = SvRV (coro_sv);	1212	coro_sv = SvRV (coro_sv);
956		1213
…		…
960	return 0;	1217	return 0;
961		1218
962	coro->flags |= CF_READY;	1219	coro->flags |= CF_READY;
963		1220
964	LOCK;	1221	LOCK;
965	coro_enq (SvREFCNT_inc (coro_sv));	1222	coro_enq (aTHX_ SvREFCNT_inc (coro_sv));
		1223	++coro_nready;
966	UNLOCK;	1224	UNLOCK;
967		1225
968	return 1;	1226	return 1;
969	}	1227	}
970		1228
971	static int	1229	static int
972	api_is_ready (SV *coro_sv)	1230	api_is_ready (SV *coro_sv)
973	{	1231	{
		1232	dTHX;
974	return !!(SvSTATE (coro_sv)->flags & CF_READY);	1233	return !!(SvSTATE (coro_sv)->flags & CF_READY);
975	}	1234	}
976		1235
977	static void	1236	static void
978	prepare_schedule (struct transfer_args *ta)	1237	prepare_schedule (pTHX_ struct transfer_args *ta)
979	{	1238	{
980	SV *prev, *next;	1239	SV *prev_sv, *next_sv;
981		1240
982	for (;;)	1241	for (;;)
983	{	1242	{
984	LOCK;	1243	LOCK;
985	next = coro_deq (PRIO_MIN);	1244	next_sv = coro_deq (aTHX_ PRIO_MIN);
		1245
		1246	/* nothing to schedule: call the idle handler */
		1247	if (!next_sv)
		1248	{
		1249	dSP;
		1250	UNLOCK;
		1251
		1252	ENTER;
		1253	SAVETMPS;
		1254
		1255	PUSHMARK (SP);
		1256	PUTBACK;
		1257	call_sv (get_sv ("Coro::idle", FALSE), G_DISCARD);
		1258
		1259	FREETMPS;
		1260	LEAVE;
		1261	continue;
		1262	}
		1263
		1264	ta->next = SvSTATE (next_sv);
		1265
		1266	/* cannot transfer to destroyed coros, skip and look for next */
		1267	if (ta->next->flags & CF_DESTROYED)
		1268	{
		1269	UNLOCK;
		1270	SvREFCNT_dec (next_sv);
		1271	/* coro_nready is already taken care of by destroy */
		1272	continue;
		1273	}
		1274
		1275	--coro_nready;
986	UNLOCK;	1276	UNLOCK;
987
988	if (next)
989	break;	1277	break;
990
991	{
992	dSP;
993
994	ENTER;
995	SAVETMPS;
996
997	PUSHMARK (SP);
998	PUTBACK;
999	call_sv (get_sv ("Coro::idle", FALSE), G_DISCARD);
1000
1001	FREETMPS;
1002	LEAVE;
1003	}	1278	}
1004	}
1005
1006	prev = SvRV (coro_current);
1007	SvRV_set (coro_current, next);
1008		1279
1009	/* free this only after the transfer */	1280	/* free this only after the transfer */
1010	LOCK;	1281	prev_sv = SvRV (coro_current);
1011	free_coro_mortal ();
1012	UNLOCK;
1013	coro_mortal = prev;
1014
1015	assert (!SvROK(prev));//D
1016	assert (!SvROK(next));//D
1017
1018	ta->prev = SvSTATE (prev);	1282	ta->prev = SvSTATE (prev_sv);
1019	ta->next = SvSTATE (next);	1283	TRANSFER_CHECK (*ta);
1020
1021	assert (ta->next->flags & CF_READY);	1284	assert (ta->next->flags & CF_READY);
1022	ta->next->flags &= ~CF_READY;	1285	ta->next->flags &= ~CF_READY;
1023	}	1286	SvRV_set (coro_current, next_sv);
1024		1287
		1288	LOCK;
		1289	free_coro_mortal (aTHX);
		1290	coro_mortal = prev_sv;
		1291	UNLOCK;
		1292	}
		1293
1025	static void	1294	static void
1026	prepare_cede (struct transfer_args *ta)	1295	prepare_cede (pTHX_ struct transfer_args *ta)
1027	{	1296	{
1028	api_ready (coro_current);	1297	api_ready (coro_current);
1029
1030	prepare_schedule (ta);	1298	prepare_schedule (aTHX_ ta);
		1299	}
		1300
		1301	static int
		1302	prepare_cede_notself (pTHX_ struct transfer_args *ta)
		1303	{
		1304	if (coro_nready)
		1305	{
		1306	SV *prev = SvRV (coro_current);
		1307	prepare_schedule (aTHX_ ta);
		1308	api_ready (prev);
		1309	return 1;
		1310	}
		1311	else
		1312	return 0;
1031	}	1313	}
1032		1314
1033	static void	1315	static void
1034	api_schedule (void)	1316	api_schedule (void)
1035	{	1317	{
		1318	dTHX;
1036	struct transfer_args ta;	1319	struct transfer_args ta;
1037		1320
1038	prepare_schedule (&ta);	1321	prepare_schedule (aTHX_ &ta);
1039	TRANSFER (ta);	1322	TRANSFER (ta);
1040	}	1323	}
1041		1324
1042	static void	1325	static int
1043	api_cede (void)	1326	api_cede (void)
1044	{	1327	{
		1328	dTHX;
1045	struct transfer_args ta;	1329	struct transfer_args ta;
1046		1330
1047	prepare_cede (&ta);	1331	prepare_cede (aTHX_ &ta);
		1332
		1333	if (ta.prev != ta.next)
		1334	{
1048	TRANSFER (ta);	1335	TRANSFER (ta);
		1336	return 1;
		1337	}
		1338	else
		1339	return 0;
1049	}	1340	}
1050		1341
		1342	static int
		1343	api_cede_notself (void)
		1344	{
		1345	dTHX;
		1346	struct transfer_args ta;
		1347
		1348	if (prepare_cede_notself (aTHX_ &ta))
		1349	{
		1350	TRANSFER (ta);
		1351	return 1;
		1352	}
		1353	else
		1354	return 0;
		1355	}
		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
1051	MODULE = Coro::State PACKAGE = Coro::State	1383	MODULE = Coro::State PACKAGE = Coro::State PREFIX = api_
1052		1384
1053	PROTOTYPES: DISABLE	1385	PROTOTYPES: DISABLE
1054		1386
1055	BOOT:	1387	BOOT:
1056	{	1388	{
1057	#ifdef USE_ITHREADS	1389	#ifdef USE_ITHREADS
1058	MUTEX_INIT (&coro_mutex);	1390	MUTEX_INIT (&coro_mutex);
1059	#endif	1391	#endif
1060	BOOT_PAGESIZE;	1392	BOOT_PAGESIZE;
1061		1393
		1394	irsgv = gv_fetchpv ("/", 1, SVt_PV);
		1395
1062	coro_state_stash = gv_stashpv ("Coro::State", TRUE);	1396	coro_state_stash = gv_stashpv ("Coro::State", TRUE);
1063		1397
		1398	newCONSTSUB (coro_state_stash, "CC_TRACE" , newSViv (CC_TRACE));
		1399	newCONSTSUB (coro_state_stash, "CC_TRACE_SUB" , newSViv (CC_TRACE_SUB));
1064	newCONSTSUB (coro_state_stash, "SAVE_DEFAV", newSViv (CORO_SAVE_DEFAV));	1400	newCONSTSUB (coro_state_stash, "CC_TRACE_LINE", newSViv (CC_TRACE_LINE));
1065	newCONSTSUB (coro_state_stash, "SAVE_DEFSV", newSViv (CORO_SAVE_DEFSV));
1066	newCONSTSUB (coro_state_stash, "SAVE_ERRSV", newSViv (CORO_SAVE_ERRSV));
1067	newCONSTSUB (coro_state_stash, "SAVE_IRSSV", newSViv (CORO_SAVE_IRSSV));
1068	newCONSTSUB (coro_state_stash, "SAVE_ALL", newSViv (CORO_SAVE_ALL));	1401	newCONSTSUB (coro_state_stash, "CC_TRACE_ALL" , newSViv (CC_TRACE_ALL));
1069		1402
1070	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;
1071		1408
1072	coroapi.ver = CORO_API_VERSION;	1409	coroapi.ver = CORO_API_VERSION;
1073	coroapi.transfer = api_transfer;	1410	coroapi.transfer = api_transfer;
1074		1411
1075	assert (("PRIO_NORMAL must be 0", !PRIO_NORMAL));	1412	assert (("PRIO_NORMAL must be 0", !PRIO_NORMAL));
…		…
1082	struct coro *coro;	1419	struct coro *coro;
1083	HV *hv;	1420	HV *hv;
1084	int i;	1421	int i;
1085		1422
1086	Newz (0, coro, 1, struct coro);	1423	Newz (0, coro, 1, struct coro);
1087	coro->args = newAV ();	1424	coro->args = newAV ();
1088	coro->save = CORO_SAVE_ALL;
1089	coro->flags = CF_NEW;	1425	coro->flags = CF_NEW;
1090		1426
		1427	if (coro_first) coro_first->prev = coro;
		1428	coro->next = coro_first;
		1429	coro_first = coro;
		1430
1091	hv = newHV ();	1431	coro->hv = hv = newHV ();
1092	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;
1093	RETVAL = sv_bless (newRV_noinc ((SV *)hv), gv_stashpv (klass, 1));	1433	RETVAL = sv_bless (newRV_noinc ((SV *)hv), gv_stashpv (klass, 1));
1094		1434
1095	for (i = 1; i < items; i++)	1435	for (i = 1; i < items; i++)
1096	av_push (coro->args, newSVsv (ST (i)));	1436	av_push (coro->args, newSVsv (ST (i)));
1097	}	1437	}
1098	OUTPUT:	1438	OUTPUT:
1099	RETVAL	1439	RETVAL
1100		1440
1101	int	1441	# these not obviously related functions are all rolled into the same xs
1102	save (SV *coro, int new_save = -1)	1442	# function to increase chances that they all will call transfer with the same
1103	CODE:	1443	# stack offset
1104	RETVAL = api_save (coro, new_save);
1105	OUTPUT:
1106	RETVAL
1107
1108	void	1444	void
1109	_set_stacklevel (...)	1445	_set_stacklevel (...)
1110	ALIAS:	1446	ALIAS:
1111	Coro::State::transfer = 1	1447	Coro::State::transfer = 1
1112	Coro::schedule = 2	1448	Coro::schedule = 2
1113	Coro::cede = 3	1449	Coro::cede = 3
		1450	Coro::cede_notself = 4
1114	CODE:	1451	CODE:
1115	{	1452	{
1116	struct transfer_args ta;	1453	struct transfer_args ta;
1117		1454
1118	switch (ix)	1455	switch (ix)
…		…
1124		1461
1125	case 1:	1462	case 1:
1126	if (items != 2)	1463	if (items != 2)
1127	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);
1128		1465
1129	prepare_transfer (&ta, ST (0), ST (1));	1466	prepare_transfer (aTHX_ &ta, ST (0), ST (1));
1130	break;	1467	break;
1131		1468
1132	case 2:	1469	case 2:
1133	prepare_schedule (&ta);	1470	prepare_schedule (aTHX_ &ta);
1134	break;	1471	break;
1135		1472
1136	case 3:	1473	case 3:
1137	prepare_cede (&ta);	1474	prepare_cede (aTHX_ &ta);
		1475	break;
		1476
		1477	case 4:
		1478	if (!prepare_cede_notself (aTHX_ &ta))
		1479	XSRETURN_EMPTY;
		1480
1138	break;	1481	break;
1139	}	1482	}
1140		1483
		1484	BARRIER;
1141	TRANSFER (ta);	1485	TRANSFER (ta);
1142	}
1143		1486
1144	void	1487	if (GIMME_V != G_VOID && ta.next != ta.prev)
1145	_clone_state_from (SV *dst, SV *src)	1488	XSRETURN_YES;
		1489	}
		1490
		1491	bool
		1492	_destroy (SV *coro_sv)
1146	CODE:	1493	CODE:
1147	{	1494	RETVAL = coro_state_destroy (aTHX_ SvSTATE (coro_sv));
1148	struct coro *coro_src = SvSTATE (src);	1495	OUTPUT:
1149		1496	RETVAL
1150	sv_unmagic (SvRV (dst), PERL_MAGIC_ext);
1151
1152	++coro_src->refcnt;
1153	sv_magicext (SvRV (dst), 0, PERL_MAGIC_ext, &coro_state_vtbl, (char *)coro_src, 0)->mg_flags |= MGf_DUP;
1154	}
1155		1497
1156	void	1498	void
1157	_exit (code)	1499	_exit (code)
1158	int code	1500	int code
1159	PROTOTYPE: $	1501	PROTOTYPE: $
1160	CODE:	1502	CODE:
1161	_exit (code);	1503	_exit (code);
1162		1504
1163	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
1164	cctx_count ()	1515	cctx_count ()
1165	CODE:	1516	CODE:
1166	RETVAL = cctx_count;	1517	RETVAL = cctx_count;
1167	OUTPUT:	1518	OUTPUT:
1168	RETVAL	1519	RETVAL
…		…
1172	CODE:	1523	CODE:
1173	RETVAL = cctx_idle;	1524	RETVAL = cctx_idle;
1174	OUTPUT:	1525	OUTPUT:
1175	RETVAL	1526	RETVAL
1176		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
1177	MODULE = Coro::State PACKAGE = Coro	1626	MODULE = Coro::State PACKAGE = Coro
1178		1627
1179	BOOT:	1628	BOOT:
1180	{	1629	{
1181	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);
1182		1638
1183	coro_stash = gv_stashpv ("Coro", TRUE);	1639	coro_stash = gv_stashpv ("Coro", TRUE);
1184		1640
1185	newCONSTSUB (coro_stash, "PRIO_MAX", newSViv (PRIO_MAX));	1641	newCONSTSUB (coro_stash, "PRIO_MAX", newSViv (PRIO_MAX));
1186	newCONSTSUB (coro_stash, "PRIO_HIGH", newSViv (PRIO_HIGH));	1642	newCONSTSUB (coro_stash, "PRIO_HIGH", newSViv (PRIO_HIGH));
1187	newCONSTSUB (coro_stash, "PRIO_NORMAL", newSViv (PRIO_NORMAL));	1643	newCONSTSUB (coro_stash, "PRIO_NORMAL", newSViv (PRIO_NORMAL));
1188	newCONSTSUB (coro_stash, "PRIO_LOW", newSViv (PRIO_LOW));	1644	newCONSTSUB (coro_stash, "PRIO_LOW", newSViv (PRIO_LOW));
1189	newCONSTSUB (coro_stash, "PRIO_IDLE", newSViv (PRIO_IDLE));	1645	newCONSTSUB (coro_stash, "PRIO_IDLE", newSViv (PRIO_IDLE));
1190	newCONSTSUB (coro_stash, "PRIO_MIN", newSViv (PRIO_MIN));	1646	newCONSTSUB (coro_stash, "PRIO_MIN", newSViv (PRIO_MIN));
1191		1647
1192	coro_current = get_sv ("Coro::current", FALSE);
1193	SvREADONLY_on (coro_current);
1194
1195	for (i = PRIO_MAX - PRIO_MIN + 1; i--; )	1648	for (i = PRIO_MAX - PRIO_MIN + 1; i--; )
1196	coro_ready[i] = newAV ();	1649	coro_ready[i] = newAV ();
1197		1650
1198	{	1651	{
1199	SV *sv = perl_get_sv("Coro::API", 1);	1652	SV *sv = perl_get_sv("Coro::API", 1);
1200		1653
1201	coroapi.schedule = api_schedule;	1654	coroapi.schedule = api_schedule;
1202	coroapi.save = api_save;
1203	coroapi.cede = api_cede;	1655	coroapi.cede = api_cede;
		1656	coroapi.cede_notself = api_cede_notself;
1204	coroapi.ready = api_ready;	1657	coroapi.ready = api_ready;
1205	coroapi.is_ready = api_is_ready;	1658	coroapi.is_ready = api_is_ready;
1206	coroapi.nready = &coro_nready;	1659	coroapi.nready = &coro_nready;
1207	coroapi.current = coro_current;	1660	coroapi.current = coro_current;
1208		1661
1209	GCoroAPI = &coroapi;	1662	GCoroAPI = &coroapi;
1210	sv_setiv (sv, (IV)&coroapi);	1663	sv_setiv (sv, (IV)&coroapi);
1211	SvREADONLY_on (sv);	1664	SvREADONLY_on (sv);
1212	}	1665	}
…		…
1247	CODE:	1700	CODE:
1248	RETVAL = boolSV (api_ready (self));	1701	RETVAL = boolSV (api_ready (self));
1249	OUTPUT:	1702	OUTPUT:
1250	RETVAL	1703	RETVAL
1251		1704
1252	SV *
1253	is_ready (SV *self)
1254	PROTOTYPE: $
1255	CODE:
1256	RETVAL = boolSV (api_is_ready (self));
1257	OUTPUT:
1258	RETVAL
1259
1260	int	1705	int
1261	nready (...)	1706	nready (...)
1262	PROTOTYPE:	1707	PROTOTYPE:
1263	CODE:	1708	CODE:
1264	RETVAL = coro_nready;	1709	RETVAL = coro_nready;
1265	OUTPUT:	1710	OUTPUT:
1266	RETVAL	1711	RETVAL
1267		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
1268	MODULE = Coro::State PACKAGE = Coro::AIO	1777	MODULE = Coro::State PACKAGE = Coro::AIO
1269		1778
1270	SV *	1779	SV *
1271	_get_state ()	1780	_get_state ()
1272	CODE:	1781	CODE:

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