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/cvs/Coro/Coro/State.xs

Comparing Coro/Coro/State.xs (file contents):
Revision 1.141 by root, Mon Jan 22 18:45:17 2007 UTC vs.
Revision 1.194 by root, Sat Oct 6 00:08:04 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>
38	# define REGISTER_STACK(cctx,start,end) (cctx)->valgrind_id = VALGRIND_STACK_REGISTER ((start), (end))	40	# define REGISTER_STACK(cctx,start,end) (cctx)->valgrind_id = VALGRIND_STACK_REGISTER ((start), (end))
39	#else	41	#else
40	# define REGISTER_STACK(cctx,start,end)	42	# define REGISTER_STACK(cctx,start,end)
41	#endif	43	#endif
…		…
73	/* 5.8.7 */	75	/* 5.8.7 */
74	#ifndef SvRV_set	76	#ifndef SvRV_set
75	# define SvRV_set(s,v) SvRV(s) = (v)	77	# define SvRV_set(s,v) SvRV(s) = (v)
76	#endif	78	#endif
77		79
		80	/* 5.8.8 */
		81	#ifndef GV_NOTQUAL
		82	# define GV_NOTQUAL 0
		83	#endif
		84	#ifndef newSV
		85	# define newSV(l) NEWSV(0,l)
		86	#endif
		87
78	#if !__i386 && !__x86_64 && !__powerpc && !__m68k && !__alpha && !__mips && !__sparc64	88	#if !__i386 && !__x86_64 && !__powerpc && !__m68k && !__alpha && !__mips && !__sparc64
79	# undef STACKGUARD	89	# undef CORO_STACKGUARD
80	#endif	90	#endif
81		91
82	#ifndef STACKGUARD	92	#ifndef CORO_STACKGUARD
83	# define STACKGUARD 0	93	# define CORO_STACKGUARD 0
84	#endif	94	#endif
85		95
86	/* prefer perl internal functions over our own? */	96	/* prefer perl internal functions over our own? */
87	#ifndef PREFER_PERL_FUNCTIONS	97	#ifndef CORO_PREFER_PERL_FUNCTIONS
88	# define PREFER_PERL_FUNCTIONS 0	98	# define CORO_PREFER_PERL_FUNCTIONS 0
89	#endif	99	#endif
90		100
91	/* The next macro should declare a variable stacklevel that contains and approximation	101	/* The next macros try to return the current stack pointer, in an as
92	* to the current C stack pointer. Its property is that it changes with each call	102	* portable way as possible. */
93	* and should be unique. */
94	#define dSTACKLEVEL int stacklevel	103	#define dSTACKLEVEL volatile char stacklevel
95	#define STACKLEVEL ((void *)&stacklevel)	104	#define STACKLEVEL ((void *)&stacklevel)
96		105
97	#define IN_DESTRUCT (PL_main_cv == Nullcv)	106	#define IN_DESTRUCT (PL_main_cv == Nullcv)
98		107
99	#if __GNUC__ >= 3	108	#if __GNUC__ >= 3
100	# define attribute(x) __attribute__(x)	109	# define attribute(x) __attribute__(x)
101	# define BARRIER __asm__ __volatile__ ("" : : : "memory")	110	# define BARRIER __asm__ __volatile__ ("" : : : "memory")
		111	# define expect(expr,value) __builtin_expect ((expr),(value))
102	#else	112	#else
103	# define attribute(x)	113	# define attribute(x)
104	# define BARRIER	114	# define BARRIER
		115	# define expect(expr,value) (expr)
105	#endif	116	#endif
		117
		118	#define expect_false(expr) expect ((expr) != 0, 0)
		119	#define expect_true(expr) expect ((expr) != 0, 1)
106		120
107	#define NOINLINE attribute ((noinline))	121	#define NOINLINE attribute ((noinline))
108		122
109	#include "CoroAPI.h"	123	#include "CoroAPI.h"
110		124
…		…
124	I32 laststype;	138	I32 laststype;
125	int laststatval;	139	int laststatval;
126	Stat_t statcache;	140	Stat_t statcache;
127	};	141	};
128		142
		143	static size_t coro_stacksize = CORO_STACKSIZE;
129	static struct CoroAPI coroapi;	144	static struct CoroAPI coroapi;
130	static AV *main_mainstack; /* used to differentiate between $main and others */	145	static AV *main_mainstack; /* used to differentiate between $main and others */
		146	static JMPENV *main_top_env;
131	static HV *coro_state_stash, *coro_stash;	147	static HV *coro_state_stash, *coro_stash;
132	static SV *coro_mortal; /* will be freed after next transfer */	148	static SV *coro_mortal; /* will be freed after next transfer */
133		149
		150	static GV *irsgv; /* $/ */
		151	static GV *stdoutgv; /* *STDOUT */
		152
		153	/* async_pool helper stuff */
		154	static SV *sv_pool_rss;
		155	static SV *sv_pool_size;
		156	static AV *av_async_pool;
		157
134	static struct coro_cctx *cctx_first;	158	static struct coro_cctx *cctx_first;
135	static int cctx_count, cctx_idle;	159	static int cctx_count, cctx_idle;
		160
		161	enum {
		162	CC_MAPPED = 0x01,
		163	CC_NOREUSE = 0x02, /* throw this away after tracing */
		164	CC_TRACE = 0x04,
		165	CC_TRACE_SUB = 0x08, /* trace sub calls */
		166	CC_TRACE_LINE = 0x10, /* trace each statement */
		167	CC_TRACE_ALL = CC_TRACE_SUB | CC_TRACE_LINE,
		168	};
136		169
137	/* this is a structure representing a c-level coroutine */	170	/* this is a structure representing a c-level coroutine */
138	typedef struct coro_cctx {	171	typedef struct coro_cctx {
139	struct coro_cctx *next;	172	struct coro_cctx *next;
140		173
141	/* the stack */	174	/* the stack */
142	void *sptr;	175	void *sptr;
143	ssize_t ssize; /* positive == mmap, otherwise malloc */	176	size_t ssize;
144		177
145	/* cpu state */	178	/* cpu state */
146	void *idle_sp; /* sp of top-level transfer/schedule/cede call */	179	void *idle_sp; /* sp of top-level transfer/schedule/cede call */
147	JMPENV *idle_te; /* same as idle_sp, but for top_env, TODO: remove once stable */	180	JMPENV *idle_te; /* same as idle_sp, but for top_env, TODO: remove once stable */
148	JMPENV *top_env;	181	JMPENV *top_env;
149	coro_context cctx;	182	coro_context cctx;
150		183
151	int inuse;
152
153	#if USE_VALGRIND	184	#if CORO_USE_VALGRIND
154	int valgrind_id;	185	int valgrind_id;
155	#endif	186	#endif
		187	unsigned char flags;
156	} coro_cctx;	188	} coro_cctx;
157		189
158	enum {	190	enum {
159	CF_RUNNING = 0x0001, /* coroutine is running */	191	CF_RUNNING = 0x0001, /* coroutine is running */
160	CF_READY = 0x0002, /* coroutine is ready */	192	CF_READY = 0x0002, /* coroutine is ready */
…		…
168	coro_cctx *cctx;	200	coro_cctx *cctx;
169		201
170	/* data associated with this coroutine (initial args) */	202	/* data associated with this coroutine (initial args) */
171	AV *args;	203	AV *args;
172	int refcnt;	204	int refcnt;
173	int save; /* CORO_SAVE flags */
174	int flags; /* CF_ flags */	205	int flags; /* CF_ flags */
175		206
176	/* optionally saved, might be zero */	207	/* optionally saved, might be zero */
177	AV *defav; /* @_ */	208	AV *defav; /* @_ */
178	SV *defsv; /* $_ */	209	SV *defsv; /* $_ */
179	SV *errsv; /* $@ */	210	SV *errsv; /* $@ */
		211	SV *deffh; /* default filehandle */
180	SV *irssv; /* $/ */	212	SV *irssv; /* $/ */
181	SV *irssv_sv; /* real $/ cache */	213	SV *irssv_sv; /* real $/ cache */
182		214
183	#define VAR(name,type) type name;	215	#define VAR(name,type) type name;
184	# include "state.h"	216	# include "state.h"
185	#undef VAR	217	#undef VAR
186		218
		219	/* statistics */
		220	int usecount; /* number of transfers to this coro */
		221
187	/* coro process data */	222	/* coro process data */
188	int prio;	223	int prio;
		224	//SV *throw;
		225
		226	/* async_pool */
		227	SV *saved_deffh;
		228
		229	/* linked list */
		230	struct coro *next, *prev;
		231	HV *hv; /* the perl hash associated with this coro, if any */
189	};	232	};
190		233
191	typedef struct coro *Coro__State;	234	typedef struct coro *Coro__State;
192	typedef struct coro *Coro__State_or_hashref;	235	typedef struct coro *Coro__State_or_hashref;
193		236
…		…
202		245
203	/* for Coro.pm */	246	/* for Coro.pm */
204	static SV *coro_current;	247	static SV *coro_current;
205	static AV *coro_ready [PRIO_MAX-PRIO_MIN+1];	248	static AV *coro_ready [PRIO_MAX-PRIO_MIN+1];
206	static int coro_nready;	249	static int coro_nready;
		250	static struct coro *coro_first;
207		251
208	/** lowlevel stuff **********************************************************/	252	/** lowlevel stuff **********************************************************/
209		253
210	static AV *	254	static AV *
211	coro_clone_padlist (CV *cv)	255	coro_clone_padlist (pTHX_ CV *cv)
212	{	256	{
213	AV *padlist = CvPADLIST (cv);	257	AV *padlist = CvPADLIST (cv);
214	AV *newpadlist, *newpad;	258	AV *newpadlist, *newpad;
215		259
216	newpadlist = newAV ();	260	newpadlist = newAV ();
…		…
228		272
229	return newpadlist;	273	return newpadlist;
230	}	274	}
231		275
232	static void	276	static void
233	free_padlist (AV *padlist)	277	free_padlist (pTHX_ AV *padlist)
234	{	278	{
235	/* may be during global destruction */	279	/* may be during global destruction */
236	if (SvREFCNT (padlist))	280	if (SvREFCNT (padlist))
237	{	281	{
238	I32 i = AvFILLp (padlist);	282	I32 i = AvFILLp (padlist);
…		…
259	AV *padlist;	303	AV *padlist;
260	AV *av = (AV *)mg->mg_obj;	304	AV *av = (AV *)mg->mg_obj;
261		305
262	/* casting is fun. */	306	/* casting is fun. */
263	while (&PL_sv_undef != (SV *)(padlist = (AV *)av_pop (av)))	307	while (&PL_sv_undef != (SV *)(padlist = (AV *)av_pop (av)))
264	free_padlist (padlist);	308	free_padlist (aTHX_ padlist);
265		309
266	SvREFCNT_dec (av);	310	SvREFCNT_dec (av);
267		311
268	return 0;	312	return 0;
269	}	313	}
…		…
277	? SvMAGIC (cv)->mg_type == PERL_MAGIC_coro \	321	? SvMAGIC (cv)->mg_type == PERL_MAGIC_coro \
278	? SvMAGIC (cv) \	322	? SvMAGIC (cv) \
279	: mg_find ((SV *)cv, PERL_MAGIC_coro) \	323	: mg_find ((SV *)cv, PERL_MAGIC_coro) \
280	: 0	324	: 0
281		325
		326	static struct coro *
		327	SvSTATE_ (pTHX_ SV *coro)
		328	{
		329	HV *stash;
		330	MAGIC *mg;
		331
		332	if (SvROK (coro))
		333	coro = SvRV (coro);
		334
		335	if (expect_false (SvTYPE (coro) != SVt_PVHV))
		336	croak ("Coro::State object required");
		337
		338	stash = SvSTASH (coro);
		339	if (expect_false (stash != coro_stash && stash != coro_state_stash))
		340	{
		341	/* very slow, but rare, check */
		342	if (!sv_derived_from (sv_2mortal (newRV_inc (coro)), "Coro::State"))
		343	croak ("Coro::State object required");
		344	}
		345
		346	mg = CORO_MAGIC (coro);
		347	return (struct coro *)mg->mg_ptr;
		348	}
		349
		350	#define SvSTATE(sv) SvSTATE_ (aTHX_ (sv))
		351
282	/* the next two functions merely cache the padlists */	352	/* the next two functions merely cache the padlists */
283	static void	353	static void
284	get_padlist (CV *cv)	354	get_padlist (pTHX_ CV *cv)
285	{	355	{
286	MAGIC *mg = CORO_MAGIC (cv);	356	MAGIC *mg = CORO_MAGIC (cv);
287	AV *av;	357	AV *av;
288		358
289	if (mg && AvFILLp ((av = (AV *)mg->mg_obj)) >= 0)	359	if (expect_true (mg && AvFILLp ((av = (AV *)mg->mg_obj)) >= 0))
290	CvPADLIST (cv) = (AV *)AvARRAY (av)[AvFILLp (av)--];	360	CvPADLIST (cv) = (AV *)AvARRAY (av)[AvFILLp (av)--];
291	else	361	else
292	{	362	{
293	#if PREFER_PERL_FUNCTIONS	363	#if CORO_PREFER_PERL_FUNCTIONS
294	/* this is probably cleaner, but also slower? */	364	/* this is probably cleaner, but also slower? */
295	CV *cp = Perl_cv_clone (cv);	365	CV *cp = Perl_cv_clone (cv);
296	CvPADLIST (cv) = CvPADLIST (cp);	366	CvPADLIST (cv) = CvPADLIST (cp);
297	CvPADLIST (cp) = 0;	367	CvPADLIST (cp) = 0;
298	SvREFCNT_dec (cp);	368	SvREFCNT_dec (cp);
299	#else	369	#else
300	CvPADLIST (cv) = coro_clone_padlist (cv);	370	CvPADLIST (cv) = coro_clone_padlist (aTHX_ cv);
301	#endif	371	#endif
302	}	372	}
303	}	373	}
304		374
305	static void	375	static void
306	put_padlist (CV *cv)	376	put_padlist (pTHX_ CV *cv)
307	{	377	{
308	MAGIC *mg = CORO_MAGIC (cv);	378	MAGIC *mg = CORO_MAGIC (cv);
309	AV *av;	379	AV *av;
310		380
311	if (!mg)	381	if (expect_false (!mg))
312	{	382	{
313	sv_magic ((SV *)cv, 0, PERL_MAGIC_coro, 0, 0);	383	sv_magic ((SV *)cv, 0, PERL_MAGIC_coro, 0, 0);
314	mg = mg_find ((SV *)cv, PERL_MAGIC_coro);	384	mg = mg_find ((SV *)cv, PERL_MAGIC_coro);
315	mg->mg_virtual = &vtbl_coro;	385	mg->mg_virtual = &vtbl_coro;
316	mg->mg_obj = (SV *)newAV ();	386	mg->mg_obj = (SV *)newAV ();
317	}	387	}
318		388
319	av = (AV *)mg->mg_obj;	389	av = (AV *)mg->mg_obj;
320		390
321	if (AvFILLp (av) >= AvMAX (av))	391	if (expect_false (AvFILLp (av) >= AvMAX (av)))
322	av_extend (av, AvMAX (av) + 1);	392	av_extend (av, AvMAX (av) + 1);
323		393
324	AvARRAY (av)[++AvFILLp (av)] = (SV *)CvPADLIST (cv);	394	AvARRAY (av)[++AvFILLp (av)] = (SV *)CvPADLIST (cv);
325	}	395	}
326		396
327	/** load & save, init *******************************************************/	397	/** load & save, init *******************************************************/
328		398
329	#define SB do {
330	#define SE } while (0)
331
332	#define REPLACE_SV(sv,val) SB SvREFCNT_dec (sv); (sv) = (val); (val) = 0; SE
333
334	static void	399	static void
335	load_perl (Coro__State c)	400	load_perl (pTHX_ Coro__State c)
336	{	401	{
337	#define VAR(name,type) PL_ ## name = c->name;	402	#define VAR(name,type) PL_ ## name = c->name;
338	# include "state.h"	403	# include "state.h"
339	#undef VAR	404	#undef VAR
340		405
341	if (c->defav) REPLACE_SV (GvAV (PL_defgv), c->defav);	406	GvSV (PL_defgv) = c->defsv;
342	if (c->defsv) REPLACE_SV (DEFSV , c->defsv);	407	GvAV (PL_defgv) = c->defav;
343	if (c->errsv) REPLACE_SV (ERRSV , c->errsv);	408	GvSV (PL_errgv) = c->errsv;
344	if (c->irssv)	409	GvSV (irsgv) = c->irssv_sv;
345	{
346	if (c->irssv == PL_rs || sv_eq (PL_rs, c->irssv))
347	SvREFCNT_dec (c->irssv);
348	else
349	{
350	REPLACE_SV (PL_rs, c->irssv);
351	if (!c->irssv_sv) c->irssv_sv = get_sv ("/", 0);
352	sv_setsv (c->irssv_sv, PL_rs);
353	}
354	}
355		410
356	{	411	{
357	dSP;	412	dSP;
358	CV *cv;	413	CV *cv;
359		414
360	/* now do the ugly restore mess */	415	/* now do the ugly restore mess */
361	while ((cv = (CV *)POPs))	416	while (expect_true (cv = (CV *)POPs))
362	{	417	{
363	put_padlist (cv); /* mark this padlist as available */	418	put_padlist (aTHX_ cv); /* mark this padlist as available */
364	CvDEPTH (cv) = PTR2IV (POPs);	419	CvDEPTH (cv) = PTR2IV (POPs);
365	CvPADLIST (cv) = (AV *)POPs;	420	CvPADLIST (cv) = (AV *)POPs;
366	}	421	}
367		422
368	PUTBACK;	423	PUTBACK;
369	}	424	}
370	}	425	}
371		426
372	static void	427	static void
373	save_perl (Coro__State c)	428	save_perl (pTHX_ Coro__State c)
374	{	429	{
375	{	430	{
376	dSP;	431	dSP;
377	I32 cxix = cxstack_ix;	432	I32 cxix = cxstack_ix;
378	PERL_CONTEXT *ccstk = cxstack;	433	PERL_CONTEXT *ccstk = cxstack;
…		…
381	/*	436	/*
382	* the worst thing you can imagine happens first - we have to save	437	* the worst thing you can imagine happens first - we have to save
383	* (and reinitialize) all cv's in the whole callchain :(	438	* (and reinitialize) all cv's in the whole callchain :(
384	*/	439	*/
385		440
386	EXTEND (SP, 3 + 1);
387	PUSHs (Nullsv);	441	XPUSHs (Nullsv);
388	/* this loop was inspired by pp_caller */	442	/* this loop was inspired by pp_caller */
389	for (;;)	443	for (;;)
390	{	444	{
391	while (cxix >= 0)	445	while (expect_true (cxix >= 0))
392	{	446	{
393	PERL_CONTEXT *cx = &ccstk[cxix--];	447	PERL_CONTEXT *cx = &ccstk[cxix--];
394		448
395	if (CxTYPE (cx) == CXt_SUB)	449	if (expect_true (CxTYPE (cx) == CXt_SUB || CxTYPE (cx) == CXt_FORMAT))
396	{	450	{
397	CV *cv = cx->blk_sub.cv;	451	CV *cv = cx->blk_sub.cv;
398		452
399	if (CvDEPTH (cv))	453	if (expect_true (CvDEPTH (cv)))
400	{	454	{
401	EXTEND (SP, 3);	455	EXTEND (SP, 3);
402	PUSHs ((SV *)CvPADLIST (cv));	456	PUSHs ((SV *)CvPADLIST (cv));
403	PUSHs (INT2PTR (SV *, CvDEPTH (cv)));	457	PUSHs (INT2PTR (SV *, CvDEPTH (cv)));
404	PUSHs ((SV *)cv);	458	PUSHs ((SV *)cv);
405		459
406	CvDEPTH (cv) = 0;	460	CvDEPTH (cv) = 0;
407	get_padlist (cv);	461	get_padlist (aTHX_ cv);
408	}	462	}
409	}	463	}
410	}	464	}
411		465
412	if (top_si->si_type == PERLSI_MAIN)	466	if (expect_true (top_si->si_type == PERLSI_MAIN))
413	break;	467	break;
414		468
415	top_si = top_si->si_prev;	469	top_si = top_si->si_prev;
416	ccstk = top_si->si_cxstack;	470	ccstk = top_si->si_cxstack;
417	cxix = top_si->si_cxix;	471	cxix = top_si->si_cxix;
418	}	472	}
419		473
420	PUTBACK;	474	PUTBACK;
421	}	475	}
422		476
423	c->defav = c->save & CORO_SAVE_DEFAV ? (AV *)SvREFCNT_inc (GvAV (PL_defgv)) : 0;	477	c->defav = GvAV (PL_defgv);
424	c->defsv = c->save & CORO_SAVE_DEFSV ? SvREFCNT_inc (DEFSV) : 0;	478	c->defsv = DEFSV;
425	c->errsv = c->save & CORO_SAVE_ERRSV ? SvREFCNT_inc (ERRSV) : 0;	479	c->errsv = ERRSV;
426	c->irssv = c->save & CORO_SAVE_IRSSV ? SvREFCNT_inc (PL_rs) : 0;	480	c->irssv_sv = GvSV (irsgv);
427		481
428	#define VAR(name,type)c->name = PL_ ## name;	482	#define VAR(name,type)c->name = PL_ ## name;
429	# include "state.h"	483	# include "state.h"
430	#undef VAR	484	#undef VAR
431	}	485	}
…		…
434	* allocate various perl stacks. This is an exact copy	488	* allocate various perl stacks. This is an exact copy
435	* of perl.c:init_stacks, except that it uses less memory	489	* of perl.c:init_stacks, except that it uses less memory
436	* on the (sometimes correct) assumption that coroutines do	490	* on the (sometimes correct) assumption that coroutines do
437	* not usually need a lot of stackspace.	491	* not usually need a lot of stackspace.
438	*/	492	*/
439	#if PREFER_PERL_FUNCTIONS	493	#if CORO_PREFER_PERL_FUNCTIONS
440	# define coro_init_stacks init_stacks	494	# define coro_init_stacks init_stacks
441	#else	495	#else
442	static void	496	static void
443	coro_init_stacks ()	497	coro_init_stacks (pTHX)
444	{	498	{
445	PL_curstackinfo = new_stackinfo(128, 1024/sizeof(PERL_CONTEXT));	499	PL_curstackinfo = new_stackinfo(64, 6);
446	PL_curstackinfo->si_type = PERLSI_MAIN;	500	PL_curstackinfo->si_type = PERLSI_MAIN;
447	PL_curstack = PL_curstackinfo->si_stack;	501	PL_curstack = PL_curstackinfo->si_stack;
448	PL_mainstack = PL_curstack; /* remember in case we switch stacks */	502	PL_mainstack = PL_curstack; /* remember in case we switch stacks */
449		503
450	PL_stack_base = AvARRAY(PL_curstack);	504	PL_stack_base = AvARRAY(PL_curstack);
451	PL_stack_sp = PL_stack_base;	505	PL_stack_sp = PL_stack_base;
452	PL_stack_max = PL_stack_base + AvMAX(PL_curstack);	506	PL_stack_max = PL_stack_base + AvMAX(PL_curstack);
453		507
454	New(50,PL_tmps_stack,128,SV*);	508	New(50,PL_tmps_stack,64,SV*);
455	PL_tmps_floor = -1;	509	PL_tmps_floor = -1;
456	PL_tmps_ix = -1;	510	PL_tmps_ix = -1;
457	PL_tmps_max = 128;	511	PL_tmps_max = 64;
458		512
459	New(54,PL_markstack,32,I32);	513	New(54,PL_markstack,16,I32);
460	PL_markstack_ptr = PL_markstack;	514	PL_markstack_ptr = PL_markstack;
461	PL_markstack_max = PL_markstack + 32;	515	PL_markstack_max = PL_markstack + 16;
462		516
463	#ifdef SET_MARK_OFFSET	517	#ifdef SET_MARK_OFFSET
464	SET_MARK_OFFSET;	518	SET_MARK_OFFSET;
465	#endif	519	#endif
466		520
467	New(54,PL_scopestack,32,I32);	521	New(54,PL_scopestack,16,I32);
468	PL_scopestack_ix = 0;	522	PL_scopestack_ix = 0;
469	PL_scopestack_max = 32;	523	PL_scopestack_max = 16;
470		524
471	New(54,PL_savestack,64,ANY);	525	New(54,PL_savestack,64,ANY);
472	PL_savestack_ix = 0;	526	PL_savestack_ix = 0;
473	PL_savestack_max = 64;	527	PL_savestack_max = 64;
474		528
475	#if !PERL_VERSION_ATLEAST (5,9,0)	529	#if !PERL_VERSION_ATLEAST (5,9,0)
476	New(54,PL_retstack,16,OP*);	530	New(54,PL_retstack,4,OP*);
477	PL_retstack_ix = 0;	531	PL_retstack_ix = 0;
478	PL_retstack_max = 16;	532	PL_retstack_max = 4;
479	#endif	533	#endif
480	}	534	}
481	#endif	535	#endif
482		536
483	/*	537	/*
484	* destroy the stacks, the callchain etc...	538	* destroy the stacks, the callchain etc...
485	*/	539	*/
486	static void	540	static void
487	coro_destroy_stacks ()	541	coro_destroy_stacks (pTHX)
488	{	542	{
489	if (!IN_DESTRUCT)
490	{
491	/* restore all saved variables and stuff */
492	LEAVE_SCOPE (0);
493	assert (PL_tmps_floor == -1);
494
495	/* free all temporaries */
496	FREETMPS;
497	assert (PL_tmps_ix == -1);
498
499	/* unwind all extra stacks */
500	POPSTACK_TO (PL_mainstack);
501
502	/* unwind main stack */
503	dounwind (-1);
504	}
505
506	while (PL_curstackinfo->si_next)	543	while (PL_curstackinfo->si_next)
507	PL_curstackinfo = PL_curstackinfo->si_next;	544	PL_curstackinfo = PL_curstackinfo->si_next;
508		545
509	while (PL_curstackinfo)	546	while (PL_curstackinfo)
510	{	547	{
…		…
525	#if !PERL_VERSION_ATLEAST (5,9,0)	562	#if !PERL_VERSION_ATLEAST (5,9,0)
526	Safefree (PL_retstack);	563	Safefree (PL_retstack);
527	#endif	564	#endif
528	}	565	}
529		566
		567	static size_t
		568	coro_rss (pTHX_ struct coro *coro)
		569	{
		570	size_t rss = sizeof (*coro);
		571
		572	if (coro->mainstack)
		573	{
		574	if (coro->flags & CF_RUNNING)
		575	{
		576	#define VAR(name,type)coro->name = PL_ ## name;
		577	# include "state.h"
		578	#undef VAR
		579	}
		580
		581	rss += sizeof (coro->curstackinfo);
		582	rss += sizeof (SV) + sizeof (struct xpvav) + (1 + AvFILL (coro->curstackinfo->si_stack)) * sizeof (SV *);
		583	rss += (coro->curstackinfo->si_cxmax + 1) * sizeof (PERL_CONTEXT);
		584	rss += sizeof (SV) + sizeof (struct xpvav) + (1 + AvFILL (coro->curstack)) * sizeof (SV *);
		585	rss += coro->tmps_max * sizeof (SV *);
		586	rss += (coro->markstack_max - coro->markstack_ptr) * sizeof (I32);
		587	rss += coro->scopestack_max * sizeof (I32);
		588	rss += coro->savestack_max * sizeof (ANY);
		589
		590	#if !PERL_VERSION_ATLEAST (5,9,0)
		591	rss += coro->retstack_max * sizeof (OP *);
		592	#endif
		593	}
		594
		595	return rss;
		596	}
		597
530	/** coroutine stack handling ************************************************/	598	/** coroutine stack handling ************************************************/
531		599
532	static void	600	static void
533	setup_coro (struct coro *coro)	601	coro_setup (pTHX_ struct coro *coro)
534	{	602	{
535	/*	603	/*
536	* emulate part of the perl startup here.	604	* emulate part of the perl startup here.
537	*/	605	*/
538
539	coro_init_stacks ();	606	coro_init_stacks (aTHX);
540		607
		608	PL_runops = RUNOPS_DEFAULT;
541	PL_curcop = &PL_compiling;	609	PL_curcop = &PL_compiling;
542	PL_in_eval = EVAL_NULL;	610	PL_in_eval = EVAL_NULL;
		611	PL_comppad = 0;
543	PL_curpm = 0;	612	PL_curpm = 0;
544	PL_localizing = 0;	613	PL_localizing = 0;
545	PL_dirty = 0;	614	PL_dirty = 0;
546	PL_restartop = 0;	615	PL_restartop = 0;
		616
		617	GvSV (PL_defgv) = newSV (0);
		618	GvAV (PL_defgv) = coro->args; coro->args = 0;
		619	GvSV (PL_errgv) = newSV (0);
		620	GvSV (irsgv) = newSVpvn ("\n", 1); sv_magic (GvSV (irsgv), (SV *)irsgv, PERL_MAGIC_sv, "/", 0);
		621	PL_rs = newSVsv (GvSV (irsgv));
		622	PL_defoutgv = SvREFCNT_inc (stdoutgv);
		623
		624	ENTER; /* necessary e.g. for dounwind */
547		625
548	{	626	{
549	dSP;	627	dSP;
550	LOGOP myop;	628	LOGOP myop;
551		629
552	SvREFCNT_dec (GvAV (PL_defgv));
553	GvAV (PL_defgv) = coro->args; coro->args = 0;
554
555	Zero (&myop, 1, LOGOP);	630	Zero (&myop, 1, LOGOP);
556	myop.op_next = Nullop;	631	myop.op_next = Nullop;
557	myop.op_flags = OPf_WANT_VOID;	632	myop.op_flags = OPf_WANT_VOID;
558		633
559	PUSHMARK (SP);	634	PUSHMARK (SP);
560	XPUSHs ((SV *)get_cv ("Coro::State::_coro_init", FALSE));	635	XPUSHs (sv_2mortal (av_shift (GvAV (PL_defgv))));
561	PUTBACK;	636	PUTBACK;
562	PL_op = (OP *)&myop;	637	PL_op = (OP *)&myop;
563	PL_op = PL_ppaddr[OP_ENTERSUB](aTHX);	638	PL_op = PL_ppaddr[OP_ENTERSUB](aTHX);
564	SPAGAIN;	639	SPAGAIN;
565	}	640	}
566
567	ENTER; /* necessary e.g. for dounwind */
568	}	641	}
569		642
570	static void	643	static void
		644	coro_destroy (pTHX_ struct coro *coro)
		645	{
		646	if (!IN_DESTRUCT)
		647	{
		648	/* restore all saved variables and stuff */
		649	LEAVE_SCOPE (0);
		650	assert (PL_tmps_floor == -1);
		651
		652	/* free all temporaries */
		653	FREETMPS;
		654	assert (PL_tmps_ix == -1);
		655
		656	/* unwind all extra stacks */
		657	POPSTACK_TO (PL_mainstack);
		658
		659	/* unwind main stack */
		660	dounwind (-1);
		661	}
		662
		663	SvREFCNT_dec (GvSV (PL_defgv));
		664	SvREFCNT_dec (GvAV (PL_defgv));
		665	SvREFCNT_dec (GvSV (PL_errgv));
		666	SvREFCNT_dec (PL_defoutgv);
		667	SvREFCNT_dec (PL_rs);
		668	SvREFCNT_dec (GvSV (irsgv));
		669
		670	SvREFCNT_dec (coro->saved_deffh);
		671	//SvREFCNT_dec (coro->throw);
		672
		673	coro_destroy_stacks (aTHX);
		674	}
		675
		676	static void
571	free_coro_mortal ()	677	free_coro_mortal (pTHX)
572	{	678	{
573	if (coro_mortal)	679	if (expect_true (coro_mortal))
574	{	680	{
575	SvREFCNT_dec (coro_mortal);	681	SvREFCNT_dec (coro_mortal);
576	coro_mortal = 0;	682	coro_mortal = 0;
577	}	683	}
578	}	684	}
579		685
		686	static int
		687	runops_trace (pTHX)
		688	{
		689	COP *oldcop = 0;
		690	int oldcxix = -2;
		691	struct coro *coro = SvSTATE (coro_current); /* trace cctx is tied to specific coro */
		692	coro_cctx *cctx = coro->cctx;
		693
		694	while ((PL_op = CALL_FPTR (PL_op->op_ppaddr) (aTHX)))
		695	{
		696	PERL_ASYNC_CHECK ();
		697
		698	if (cctx->flags & CC_TRACE_ALL)
		699	{
		700	if (PL_op->op_type == OP_LEAVESUB && cctx->flags & CC_TRACE_SUB)
		701	{
		702	PERL_CONTEXT *cx = &cxstack[cxstack_ix];
		703	SV **bot, **top;
		704	AV *av = newAV (); /* return values */
		705	SV **cb;
		706	dSP;
		707
		708	GV *gv = CvGV (cx->blk_sub.cv);
		709	SV *fullname = sv_2mortal (newSV (0));
		710	if (isGV (gv))
		711	gv_efullname3 (fullname, gv, 0);
		712
		713	bot = PL_stack_base + cx->blk_oldsp + 1;
		714	top = cx->blk_gimme == G_ARRAY ? SP + 1
		715	: cx->blk_gimme == G_SCALAR ? bot + 1
		716	: bot;
		717
		718	av_extend (av, top - bot);
		719	while (bot < top)
		720	av_push (av, SvREFCNT_inc (*bot++));
		721
		722	PL_runops = RUNOPS_DEFAULT;
		723	ENTER;
		724	SAVETMPS;
		725	EXTEND (SP, 3);
		726	PUSHMARK (SP);
		727	PUSHs (&PL_sv_no);
		728	PUSHs (fullname);
		729	PUSHs (sv_2mortal (newRV_noinc ((SV *)av)));
		730	PUTBACK;
		731	cb = hv_fetch ((HV *)SvRV (coro_current), "_trace_sub_cb", sizeof ("_trace_sub_cb") - 1, 0);
		732	if (cb) call_sv (*cb, G_KEEPERR | G_EVAL | G_VOID | G_DISCARD);
		733	SPAGAIN;
		734	FREETMPS;
		735	LEAVE;
		736	PL_runops = runops_trace;
		737	}
		738
		739	if (oldcop != PL_curcop)
		740	{
		741	oldcop = PL_curcop;
		742
		743	if (PL_curcop != &PL_compiling)
		744	{
		745	SV **cb;
		746
		747	if (oldcxix != cxstack_ix && cctx->flags & CC_TRACE_SUB)
		748	{
		749	PERL_CONTEXT *cx = &cxstack[cxstack_ix];
		750
		751	if (CxTYPE (cx) == CXt_SUB && oldcxix < cxstack_ix)
		752	{
		753	runops_proc_t old_runops = PL_runops;
		754	dSP;
		755	GV *gv = CvGV (cx->blk_sub.cv);
		756	SV *fullname = sv_2mortal (newSV (0));
		757
		758	if (isGV (gv))
		759	gv_efullname3 (fullname, gv, 0);
		760
		761	PL_runops = RUNOPS_DEFAULT;
		762	ENTER;
		763	SAVETMPS;
		764	EXTEND (SP, 3);
		765	PUSHMARK (SP);
		766	PUSHs (&PL_sv_yes);
		767	PUSHs (fullname);
		768	PUSHs (cx->blk_sub.hasargs ? sv_2mortal (newRV_inc ((SV *)cx->blk_sub.argarray)) : &PL_sv_undef);
		769	PUTBACK;
		770	cb = hv_fetch ((HV *)SvRV (coro_current), "_trace_sub_cb", sizeof ("_trace_sub_cb") - 1, 0);
		771	if (cb) call_sv (*cb, G_KEEPERR | G_EVAL | G_VOID | G_DISCARD);
		772	SPAGAIN;
		773	FREETMPS;
		774	LEAVE;
		775	PL_runops = runops_trace;
		776	}
		777
		778	oldcxix = cxstack_ix;
		779	}
		780
		781	if (cctx->flags & CC_TRACE_LINE)
		782	{
		783	dSP;
		784
		785	PL_runops = RUNOPS_DEFAULT;
		786	ENTER;
		787	SAVETMPS;
		788	EXTEND (SP, 3);
		789	PL_runops = RUNOPS_DEFAULT;
		790	PUSHMARK (SP);
		791	PUSHs (sv_2mortal (newSVpv (OutCopFILE (oldcop), 0)));
		792	PUSHs (sv_2mortal (newSViv (CopLINE (oldcop))));
		793	PUTBACK;
		794	cb = hv_fetch ((HV *)SvRV (coro_current), "_trace_line_cb", sizeof ("_trace_line_cb") - 1, 0);
		795	if (cb) call_sv (*cb, G_KEEPERR | G_EVAL | G_VOID | G_DISCARD);
		796	SPAGAIN;
		797	FREETMPS;
		798	LEAVE;
		799	PL_runops = runops_trace;
		800	}
		801	}
		802	}
		803	}
		804	}
		805
		806	TAINT_NOT;
		807	return 0;
		808	}
		809
580	/* inject a fake call to Coro::State::_cctx_init into the execution */	810	/* inject a fake call to Coro::State::_cctx_init into the execution */
		811	/* _cctx_init should be careful, as it could be called at almost any time */
		812	/* during execution of a perl program */
581	static void NOINLINE	813	static void NOINLINE
582	prepare_cctx (coro_cctx *cctx)	814	prepare_cctx (pTHX_ coro_cctx *cctx)
583	{	815	{
584	dSP;	816	dSP;
585	LOGOP myop;	817	LOGOP myop;
		818
		819	PL_top_env = &PL_start_env;
		820
		821	if (cctx->flags & CC_TRACE)
		822	PL_runops = runops_trace;
586		823
587	Zero (&myop, 1, LOGOP);	824	Zero (&myop, 1, LOGOP);
588	myop.op_next = PL_op;	825	myop.op_next = PL_op;
589	myop.op_flags = OPf_WANT_VOID | OPf_STACKED;	826	myop.op_flags = OPf_WANT_VOID | OPf_STACKED;
590		827
…		…
596	PL_op = (OP *)&myop;	833	PL_op = (OP *)&myop;
597	PL_op = PL_ppaddr[OP_ENTERSUB](aTHX);	834	PL_op = PL_ppaddr[OP_ENTERSUB](aTHX);
598	SPAGAIN;	835	SPAGAIN;
599	}	836	}
600		837
		838	/*
		839	* this is a _very_ stripped down perl interpreter ;)
		840	*/
601	static void	841	static void
602	coro_run (void *arg)	842	coro_run (void *arg)
603	{	843	{
		844	dTHX;
		845
604	/* coro_run is the alternative tail of transfer(), so unlock here. */	846	/* coro_run is the alternative tail of transfer(), so unlock here. */
605	UNLOCK;	847	UNLOCK;
606		848
607	/*	849	/* we now skip the entersub that lead to transfer() */
608	* this is a _very_ stripped down perl interpreter ;)	850	PL_op = PL_op->op_next;
609	*/
610	PL_top_env = &PL_start_env;
611		851
612	/* inject call to cctx_init */	852	/* inject a fake subroutine call to cctx_init */
613	prepare_cctx ((coro_cctx *)arg);	853	prepare_cctx (aTHX_ (coro_cctx *)arg);
614		854
615	/* somebody will hit me for both perl_run and PL_restartop */	855	/* somebody or something will hit me for both perl_run and PL_restartop */
616	PL_restartop = PL_op;	856	PL_restartop = PL_op;
617	perl_run (PL_curinterp);	857	perl_run (PL_curinterp);
618		858
619	fputs ("FATAL: C coroutine fell over the edge of the world, aborting. Did you call exit in a coroutine?\n", stderr);	859	/*
620	abort ();	860	* If perl-run returns we assume exit() was being called or the coro
		861	* fell off the end, which seems to be the only valid (non-bug)
		862	* reason for perl_run to return. We try to exit by jumping to the
		863	* bootstrap-time "top" top_env, as we cannot restore the "main"
		864	* coroutine as Coro has no such concept
		865	*/
		866	PL_top_env = main_top_env;
		867	JMPENV_JUMP (2); /* I do not feel well about the hardcoded 2 at all */
621	}	868	}
622		869
623	static coro_cctx *	870	static coro_cctx *
624	cctx_new ()	871	cctx_new ()
625	{	872	{
626	coro_cctx *cctx;	873	coro_cctx *cctx;
		874	void *stack_start;
		875	size_t stack_size;
627		876
628	++cctx_count;	877	++cctx_count;
629		878
630	Newz (0, cctx, 1, coro_cctx);	879	Newz (0, cctx, 1, coro_cctx);
631		880
632	#if HAVE_MMAP	881	#if HAVE_MMAP
633		882
634	cctx->ssize = ((STACKSIZE * sizeof (long) + PAGESIZE - 1) / PAGESIZE + STACKGUARD) * PAGESIZE;	883	cctx->ssize = ((coro_stacksize * sizeof (long) + PAGESIZE - 1) / PAGESIZE + CORO_STACKGUARD) * PAGESIZE;
635	/* mmap supposedly does allocate-on-write for us */	884	/* mmap supposedly does allocate-on-write for us */
636	cctx->sptr = mmap (0, cctx->ssize, PROT_EXEC|PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, 0, 0);	885	cctx->sptr = mmap (0, cctx->ssize, PROT_EXEC|PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, 0, 0);
637		886
638	if (cctx->sptr != (void *)-1)	887	if (cctx->sptr != (void *)-1)
639	{	888	{
640	# if STACKGUARD	889	# if CORO_STACKGUARD
641	mprotect (cctx->sptr, STACKGUARD * PAGESIZE, PROT_NONE);	890	mprotect (cctx->sptr, CORO_STACKGUARD * PAGESIZE, PROT_NONE);
642	# endif	891	# endif
643	REGISTER_STACK (
644	cctx,
645	STACKGUARD * PAGESIZE + (char *)cctx->sptr,	892	stack_start = CORO_STACKGUARD * PAGESIZE + (char *)cctx->sptr;
646	cctx->ssize + (char *)cctx->sptr	893	stack_size = cctx->ssize - CORO_STACKGUARD * PAGESIZE;
647	);	894	cctx->flags |= CC_MAPPED;
648
649	coro_create (&cctx->cctx, coro_run, (void *)cctx, cctx->sptr, cctx->ssize);
650	}	895	}
651	else	896	else
652	#endif	897	#endif
653	{	898	{
654	cctx->ssize = -STACKSIZE * (long)sizeof (long);	899	cctx->ssize = coro_stacksize * (long)sizeof (long);
655	New (0, cctx->sptr, STACKSIZE, long);	900	New (0, cctx->sptr, coro_stacksize, long);
656		901
657	if (!cctx->sptr)	902	if (!cctx->sptr)
658	{	903	{
659	perror ("FATAL: unable to allocate stack for coroutine");	904	perror ("FATAL: unable to allocate stack for coroutine");
660	_exit (EXIT_FAILURE);	905	_exit (EXIT_FAILURE);
661	}	906	}
662		907
663	REGISTER_STACK (	908	stack_start = cctx->sptr;
664	cctx,	909	stack_size = cctx->ssize;
665	(char *)cctx->sptr,	910	}
666	(char *)cctx->sptr - cctx->ssize
667	);
668		911
		912	REGISTER_STACK (cctx, (char *)stack_start, (char *)stack_start + stack_size);
669	coro_create (&cctx->cctx, coro_run, (void *)cctx, cctx->sptr, -cctx->ssize);	913	coro_create (&cctx->cctx, coro_run, (void *)cctx, stack_start, stack_size);
670	}
671		914
672	return cctx;	915	return cctx;
673	}	916	}
674		917
675	static void	918	static void
…		…
678	if (!cctx)	921	if (!cctx)
679	return;	922	return;
680		923
681	--cctx_count;	924	--cctx_count;
682		925
683	#if USE_VALGRIND	926	#if CORO_USE_VALGRIND
684	VALGRIND_STACK_DEREGISTER (cctx->valgrind_id);	927	VALGRIND_STACK_DEREGISTER (cctx->valgrind_id);
685	#endif	928	#endif
686		929
687	#if HAVE_MMAP	930	#if HAVE_MMAP
688	if (cctx->ssize > 0)	931	if (cctx->flags & CC_MAPPED)
689	munmap (cctx->sptr, cctx->ssize);	932	munmap (cctx->sptr, cctx->ssize);
690	else	933	else
691	#endif	934	#endif
692	Safefree (cctx->sptr);	935	Safefree (cctx->sptr);
693		936
694	Safefree (cctx);	937	Safefree (cctx);
695	}	938	}
696		939
		940	/* wether this cctx should be destructed */
		941	#define CCTX_EXPIRED(cctx) ((cctx)->ssize < coro_stacksize || ((cctx)->flags & CC_NOREUSE))
		942
697	static coro_cctx *	943	static coro_cctx *
698	cctx_get ()	944	cctx_get (pTHX)
699	{	945	{
700	coro_cctx *cctx;	946	while (expect_true (cctx_first))
701
702	if (cctx_first)
703	{	947	{
704	cctx = cctx_first;	948	coro_cctx *cctx = cctx_first;
705	cctx_first = cctx->next;	949	cctx_first = cctx->next;
706	--cctx_idle;	950	--cctx_idle;
707	}	951
708	else	952	if (expect_true (!CCTX_EXPIRED (cctx)))
709	{	953	return cctx;
710	cctx = cctx_new ();	954
711	PL_op = PL_op->op_next;	955	cctx_destroy (cctx);
712	}	956	}
713		957
714	return cctx;	958	return cctx_new ();
715	}	959	}
716		960
717	static void	961	static void
718	cctx_put (coro_cctx *cctx)	962	cctx_put (coro_cctx *cctx)
719	{	963	{
720	/* free another cctx if overlimit */	964	/* free another cctx if overlimit */
721	if (cctx_idle >= MAX_IDLE_CCTX)	965	if (expect_false (cctx_idle >= MAX_IDLE_CCTX))
722	{	966	{
723	coro_cctx *first = cctx_first;	967	coro_cctx *first = cctx_first;
724	cctx_first = first->next;	968	cctx_first = first->next;
725	--cctx_idle;	969	--cctx_idle;
726		970
727	assert (!first->inuse);
728	cctx_destroy (first);	971	cctx_destroy (first);
729	}	972	}
730		973
731	++cctx_idle;	974	++cctx_idle;
732	cctx->next = cctx_first;	975	cctx->next = cctx_first;
733	cctx_first = cctx;	976	cctx_first = cctx;
734	}	977	}
735		978
736	/** coroutine switching *****************************************************/	979	/** coroutine switching *****************************************************/
737		980
738	/* never call directly, always through the coro_state_transfer global variable */	981	static void
		982	transfer_check (pTHX_ struct coro *prev, struct coro *next)
		983	{
		984	if (expect_true (prev != next))
		985	{
		986	if (expect_false (!(prev->flags & (CF_RUNNING | CF_NEW))))
		987	croak ("Coro::State::transfer called with non-running/new prev Coro::State, but can only transfer from running or new states");
		988
		989	if (expect_false (next->flags & CF_RUNNING))
		990	croak ("Coro::State::transfer called with running next Coro::State, but can only transfer to inactive states");
		991
		992	if (expect_false (next->flags & CF_DESTROYED))
		993	croak ("Coro::State::transfer called with destroyed next Coro::State, but can only transfer to inactive states");
		994
		995	if (expect_false (PL_lex_state != LEX_NOTPARSING))
		996	croak ("Coro::State::transfer called while parsing, but this is not supported");
		997	}
		998	}
		999
		1000	/* always use the TRANSFER macro */
739	static void NOINLINE	1001	static void NOINLINE
740	transfer (struct coro *prev, struct coro *next)	1002	transfer (pTHX_ struct coro *prev, struct coro *next)
741	{	1003	{
742	dSTACKLEVEL;	1004	dSTACKLEVEL;
743		1005
744	/* sometimes transfer is only called to set idle_sp */	1006	/* sometimes transfer is only called to set idle_sp */
745	if (!next)	1007	if (expect_false (!next))
746	{	1008	{
747	((coro_cctx *)prev)->idle_sp = STACKLEVEL;	1009	((coro_cctx *)prev)->idle_sp = STACKLEVEL;
748	assert (((coro_cctx *)prev)->idle_te = PL_top_env); /* just for the side-effect when asserts are enabled */	1010	assert (((coro_cctx *)prev)->idle_te = PL_top_env); /* just for the side-effect when asserts are enabled */
749	}	1011	}
750	else if (prev != next)	1012	else if (expect_true (prev != next))
751	{	1013	{
752	coro_cctx *prev__cctx;	1014	coro_cctx *prev__cctx;
753		1015
754	if (prev->flags & CF_NEW)	1016	if (expect_false (prev->flags & CF_NEW))
755	{	1017	{
756	/* create a new empty context */	1018	/* create a new empty context */
757	Newz (0, prev->cctx, 1, coro_cctx);	1019	Newz (0, prev->cctx, 1, coro_cctx);
758	prev->cctx->inuse = 1;
759	prev->flags &= ~CF_NEW;	1020	prev->flags &= ~CF_NEW;
760	prev->flags |= CF_RUNNING;	1021	prev->flags |= CF_RUNNING;
761	}	1022	}
762		1023
763	/*TODO: must not croak here */
764	if (!prev->flags & CF_RUNNING)
765	croak ("Coro::State::transfer called with non-running prev Coro::State, but can only transfer from running states");
766
767	if (next->flags & CF_RUNNING)
768	croak ("Coro::State::transfer called with running next Coro::State, but can only transfer to inactive states");
769
770	if (next->flags & CF_DESTROYED)
771	croak ("Coro::State::transfer called with destroyed next Coro::State, but can only transfer to inactive states");
772
773	prev->flags &= ~CF_RUNNING;	1024	prev->flags &= ~CF_RUNNING;
774	next->flags |= CF_RUNNING;	1025	next->flags |= CF_RUNNING;
775		1026
776	LOCK;	1027	LOCK;
777		1028
778	if (next->flags & CF_NEW)	1029	if (expect_false (next->flags & CF_NEW))
779	{	1030	{
780	/* need to start coroutine */	1031	/* need to start coroutine */
781	next->flags &= ~CF_NEW;	1032	next->flags &= ~CF_NEW;
782	/* first get rid of the old state */	1033	/* first get rid of the old state */
783	save_perl (prev);	1034	save_perl (aTHX_ prev);
784	/* setup coroutine call */	1035	/* setup coroutine call */
785	setup_coro (next);	1036	coro_setup (aTHX_ next);
786	/* need a new stack */
787	assert (!next->cctx);
788	}	1037	}
789	else	1038	else
790	{	1039	{
791	/* coroutine already started */	1040	/* coroutine already started */
792	save_perl (prev);	1041	save_perl (aTHX_ prev);
793	load_perl (next);	1042	load_perl (aTHX_ next);
794	}	1043	}
795		1044
796	prev__cctx = prev->cctx;	1045	prev__cctx = prev->cctx;
797		1046
798	/* possibly "free" the cctx */	1047	/* possibly "free" the cctx */
799	if (prev__cctx->idle_sp == STACKLEVEL)	1048	if (expect_true (prev__cctx->idle_sp == STACKLEVEL && !(prev__cctx->flags & CC_TRACE)))
800	{	1049	{
801	/* I assume that STACKLEVEL is a stronger indicator than PL_top_env changes */	1050	/* I assume that STACKLEVEL is a stronger indicator than PL_top_env changes */
802	assert (("ERROR: current top_env must equal previous top_env", PL_top_env == prev__cctx->idle_te));	1051	assert (("ERROR: current top_env must equal previous top_env", PL_top_env == prev__cctx->idle_te));
803		1052
804	prev->cctx = 0;	1053	prev->cctx = 0;
805		1054
		1055	/* if the cctx is about to be destroyed we need to make sure we won't see it in cctx_get */
		1056	/* without this the next cctx_get might destroy the prev__cctx while still in use */
		1057	if (expect_false (CCTX_EXPIRED (prev__cctx)))
		1058	next->cctx = cctx_get (aTHX);
		1059
806	cctx_put (prev__cctx);	1060	cctx_put (prev__cctx);
807	prev__cctx->inuse = 0;
808	}	1061	}
809		1062
		1063	++next->usecount;
		1064
810	if (!next->cctx)	1065	if (expect_true (!next->cctx))
811	{
812	next->cctx = cctx_get ();	1066	next->cctx = cctx_get (aTHX);
813	assert (!next->cctx->inuse);
814	next->cctx->inuse = 1;
815	}
816		1067
817	if (prev__cctx != next->cctx)	1068	if (expect_false (prev__cctx != next->cctx))
818	{	1069	{
819	prev__cctx->top_env = PL_top_env;	1070	prev__cctx->top_env = PL_top_env;
820	PL_top_env = next->cctx->top_env;	1071	PL_top_env = next->cctx->top_env;
821	coro_transfer (&prev__cctx->cctx, &next->cctx->cctx);	1072	coro_transfer (&prev__cctx->cctx, &next->cctx->cctx);
822	}	1073	}
823		1074
824	free_coro_mortal ();	1075	free_coro_mortal (aTHX);
825	UNLOCK;	1076	UNLOCK;
826	}	1077	}
827	}	1078	}
828		1079
829	struct transfer_args	1080	struct transfer_args
830	{	1081	{
831	struct coro *prev, *next;	1082	struct coro *prev, *next;
832	};	1083	};
833		1084
834	#define TRANSFER(ta) transfer ((ta).prev, (ta).next)	1085	#define TRANSFER(ta) transfer (aTHX_ (ta).prev, (ta).next)
		1086	#define TRANSFER_CHECK(ta) transfer_check (aTHX_ (ta).prev, (ta).next)
835		1087
836	/** high level stuff ********************************************************/	1088	/** high level stuff ********************************************************/
837		1089
838	static int	1090	static int
839	coro_state_destroy (struct coro *coro)	1091	coro_state_destroy (pTHX_ struct coro *coro)
840	{	1092	{
841	if (coro->flags & CF_DESTROYED)	1093	if (coro->flags & CF_DESTROYED)
842	return 0;	1094	return 0;
843		1095
844	coro->flags |= CF_DESTROYED;	1096	coro->flags |= CF_DESTROYED;
…		…
856		1108
857	if (coro->mainstack && coro->mainstack != main_mainstack)	1109	if (coro->mainstack && coro->mainstack != main_mainstack)
858	{	1110	{
859	struct coro temp;	1111	struct coro temp;
860		1112
861	assert (!(coro->flags & CF_RUNNING));
862
863	Zero (&temp, 1, struct coro);
864	temp.save = CORO_SAVE_ALL;
865
866	if (coro->flags & CF_RUNNING)	1113	if (coro->flags & CF_RUNNING)
867	croak ("FATAL: tried to destroy currently running coroutine");	1114	croak ("FATAL: tried to destroy currently running coroutine");
868		1115
869	save_perl (&temp);	1116	save_perl (aTHX_ &temp);
870	load_perl (coro);	1117	load_perl (aTHX_ coro);
871		1118
872	coro_destroy_stacks ();	1119	coro_destroy (aTHX_ coro);
873		1120
874	load_perl (&temp); /* this will get rid of defsv etc.. */	1121	load_perl (aTHX_ &temp); /* this will get rid of defsv etc.. */
875		1122
876	coro->mainstack = 0;	1123	coro->mainstack = 0;
877	}	1124	}
878		1125
879	cctx_destroy (coro->cctx);	1126	cctx_destroy (coro->cctx);
880	SvREFCNT_dec (coro->args);	1127	SvREFCNT_dec (coro->args);
881		1128
		1129	if (coro->next) coro->next->prev = coro->prev;
		1130	if (coro->prev) coro->prev->next = coro->next;
		1131	if (coro == coro_first) coro_first = coro->next;
		1132
882	return 1;	1133	return 1;
883	}	1134	}
884		1135
885	static int	1136	static int
886	coro_state_free (pTHX_ SV *sv, MAGIC *mg)	1137	coro_state_free (pTHX_ SV *sv, MAGIC *mg)
887	{	1138	{
888	struct coro *coro = (struct coro *)mg->mg_ptr;	1139	struct coro *coro = (struct coro *)mg->mg_ptr;
889	mg->mg_ptr = 0;	1140	mg->mg_ptr = 0;
890		1141
		1142	coro->hv = 0;
		1143
891	if (--coro->refcnt < 0)	1144	if (--coro->refcnt < 0)
892	{	1145	{
893	coro_state_destroy (coro);	1146	coro_state_destroy (aTHX_ coro);
894	Safefree (coro);	1147	Safefree (coro);
895	}	1148	}
896		1149
897	return 0;	1150	return 0;
898	}	1151	}
…		…
916	#else	1169	#else
917	# define MGf_DUP 0	1170	# define MGf_DUP 0
918	#endif	1171	#endif
919	};	1172	};
920		1173
921	static struct coro *
922	SvSTATE (SV *coro)
923	{
924	HV *stash;
925	MAGIC *mg;
926
927	if (SvROK (coro))
928	coro = SvRV (coro);
929
930	stash = SvSTASH (coro);
931	if (stash != coro_stash && stash != coro_state_stash)
932	{
933	/* very slow, but rare, check */
934	if (!sv_derived_from (sv_2mortal (newRV_inc (coro)), "Coro::State"))
935	croak ("Coro::State object required");
936	}
937
938	mg = SvMAGIC (coro);
939	assert (mg->mg_type == PERL_MAGIC_ext);
940	return (struct coro *)mg->mg_ptr;
941	}
942
943	static void	1174	static void
944	prepare_transfer (struct transfer_args *ta, SV *prev_sv, SV *next_sv)	1175	prepare_transfer (pTHX_ struct transfer_args *ta, SV *prev_sv, SV *next_sv)
945	{	1176	{
946	ta->prev = SvSTATE (prev_sv);	1177	ta->prev = SvSTATE (prev_sv);
947	ta->next = SvSTATE (next_sv);	1178	ta->next = SvSTATE (next_sv);
		1179	TRANSFER_CHECK (*ta);
948	}	1180	}
949		1181
950	static void	1182	static void
951	api_transfer (SV *prev_sv, SV *next_sv)	1183	api_transfer (SV *prev_sv, SV *next_sv)
952	{	1184	{
		1185	dTHX;
953	struct transfer_args ta;	1186	struct transfer_args ta;
954		1187
955	prepare_transfer (&ta, prev_sv, next_sv);	1188	prepare_transfer (aTHX_ &ta, prev_sv, next_sv);
956	TRANSFER (ta);	1189	TRANSFER (ta);
957	}	1190	}
958		1191
959	static int
960	api_save (SV *coro_sv, int new_save)
961	{
962	struct coro *coro = SvSTATE (coro_sv);
963	int old_save = coro->save;
964
965	if (new_save >= 0)
966	coro->save = new_save;
967
968	return old_save;
969	}
970
971	/** Coro ********************************************************************/	1192	/** Coro ********************************************************************/
972		1193
973	static void	1194	static void
974	coro_enq (SV *coro_sv)	1195	coro_enq (pTHX_ SV *coro_sv)
975	{	1196	{
976	av_push (coro_ready [SvSTATE (coro_sv)->prio - PRIO_MIN], coro_sv);	1197	av_push (coro_ready [SvSTATE (coro_sv)->prio - PRIO_MIN], coro_sv);
977	}	1198	}
978		1199
979	static SV *	1200	static SV *
980	coro_deq (int min_prio)	1201	coro_deq (pTHX_ int min_prio)
981	{	1202	{
982	int prio = PRIO_MAX - PRIO_MIN;	1203	int prio = PRIO_MAX - PRIO_MIN;
983		1204
984	min_prio -= PRIO_MIN;	1205	min_prio -= PRIO_MIN;
985	if (min_prio < 0)	1206	if (min_prio < 0)
…		…
993	}	1214	}
994		1215
995	static int	1216	static int
996	api_ready (SV *coro_sv)	1217	api_ready (SV *coro_sv)
997	{	1218	{
		1219	dTHX;
998	struct coro *coro;	1220	struct coro *coro;
999		1221
1000	if (SvROK (coro_sv))	1222	if (SvROK (coro_sv))
1001	coro_sv = SvRV (coro_sv);	1223	coro_sv = SvRV (coro_sv);
1002		1224
…		…
1006	return 0;	1228	return 0;
1007		1229
1008	coro->flags |= CF_READY;	1230	coro->flags |= CF_READY;
1009		1231
1010	LOCK;	1232	LOCK;
1011	coro_enq (SvREFCNT_inc (coro_sv));	1233	coro_enq (aTHX_ SvREFCNT_inc (coro_sv));
1012	++coro_nready;	1234	++coro_nready;
1013	UNLOCK;	1235	UNLOCK;
1014		1236
1015	return 1;	1237	return 1;
1016	}	1238	}
1017		1239
1018	static int	1240	static int
1019	api_is_ready (SV *coro_sv)	1241	api_is_ready (SV *coro_sv)
1020	{	1242	{
		1243	dTHX;
1021	return !!(SvSTATE (coro_sv)->flags & CF_READY);	1244	return !!(SvSTATE (coro_sv)->flags & CF_READY);
1022	}	1245	}
1023		1246
1024	static void	1247	static void
1025	prepare_schedule (struct transfer_args *ta)	1248	prepare_schedule (pTHX_ struct transfer_args *ta)
1026	{	1249	{
1027	SV *prev_sv, *next_sv;	1250	SV *prev_sv, *next_sv;
1028		1251
1029	for (;;)	1252	for (;;)
1030	{	1253	{
1031	LOCK;	1254	LOCK;
1032	next_sv = coro_deq (PRIO_MIN);	1255	next_sv = coro_deq (aTHX_ PRIO_MIN);
1033		1256
1034	/* nothing to schedule: call the idle handler */	1257	/* nothing to schedule: call the idle handler */
1035	if (!next_sv)	1258	if (expect_false (!next_sv))
1036	{	1259	{
1037	dSP;	1260	dSP;
1038	UNLOCK;	1261	UNLOCK;
1039		1262
1040	ENTER;	1263	ENTER;
…		…
1050	}	1273	}
1051		1274
1052	ta->next = SvSTATE (next_sv);	1275	ta->next = SvSTATE (next_sv);
1053		1276
1054	/* cannot transfer to destroyed coros, skip and look for next */	1277	/* cannot transfer to destroyed coros, skip and look for next */
1055	if (ta->next->flags & CF_DESTROYED)	1278	if (expect_false (ta->next->flags & CF_DESTROYED))
1056	{	1279	{
1057	UNLOCK;	1280	UNLOCK;
1058	SvREFCNT_dec (next_sv);	1281	SvREFCNT_dec (next_sv);
1059	/* coro_nready is already taken care of by destroy */	1282	/* coro_nready is already taken care of by destroy */
1060	continue;	1283	continue;
…		…
1065	break;	1288	break;
1066	}	1289	}
1067		1290
1068	/* free this only after the transfer */	1291	/* free this only after the transfer */
1069	prev_sv = SvRV (coro_current);	1292	prev_sv = SvRV (coro_current);
1070	SvRV_set (coro_current, next_sv);
1071	ta->prev = SvSTATE (prev_sv);	1293	ta->prev = SvSTATE (prev_sv);
1072		1294	TRANSFER_CHECK (*ta);
1073	assert (ta->next->flags & CF_READY);	1295	assert (ta->next->flags & CF_READY);
1074	ta->next->flags &= ~CF_READY;	1296	ta->next->flags &= ~CF_READY;
		1297	SvRV_set (coro_current, next_sv);
1075		1298
1076	LOCK;	1299	LOCK;
1077	free_coro_mortal ();	1300	free_coro_mortal (aTHX);
1078	coro_mortal = prev_sv;	1301	coro_mortal = prev_sv;
1079	UNLOCK;	1302	UNLOCK;
1080	}	1303	}
1081		1304
1082	static void	1305	static void
1083	prepare_cede (struct transfer_args *ta)	1306	prepare_cede (pTHX_ struct transfer_args *ta)
1084	{	1307	{
1085	api_ready (coro_current);	1308	api_ready (coro_current);
1086	prepare_schedule (ta);	1309	prepare_schedule (aTHX_ ta);
1087	}	1310	}
1088		1311
1089	static int	1312	static int
1090	prepare_cede_notself (struct transfer_args *ta)	1313	prepare_cede_notself (pTHX_ struct transfer_args *ta)
1091	{	1314	{
1092	if (coro_nready)	1315	if (coro_nready)
1093	{	1316	{
1094	SV *prev = SvRV (coro_current);	1317	SV *prev = SvRV (coro_current);
1095	prepare_schedule (ta);	1318	prepare_schedule (aTHX_ ta);
1096	api_ready (prev);	1319	api_ready (prev);
1097	return 1;	1320	return 1;
1098	}	1321	}
1099	else	1322	else
1100	return 0;	1323	return 0;
1101	}	1324	}
1102		1325
1103	static void	1326	static void
1104	api_schedule (void)	1327	api_schedule (void)
1105	{	1328	{
		1329	dTHX;
1106	struct transfer_args ta;	1330	struct transfer_args ta;
1107		1331
1108	prepare_schedule (&ta);	1332	prepare_schedule (aTHX_ &ta);
1109	TRANSFER (ta);	1333	TRANSFER (ta);
1110	}	1334	}
1111		1335
1112	static int	1336	static int
1113	api_cede (void)	1337	api_cede (void)
1114	{	1338	{
		1339	dTHX;
1115	struct transfer_args ta;	1340	struct transfer_args ta;
1116		1341
1117	prepare_cede (&ta);	1342	prepare_cede (aTHX_ &ta);
1118		1343
1119	if (ta.prev != ta.next)	1344	if (expect_true (ta.prev != ta.next))
1120	{	1345	{
1121	TRANSFER (ta);	1346	TRANSFER (ta);
1122	return 1;	1347	return 1;
1123	}	1348	}
1124	else	1349	else
…		…
1126	}	1351	}
1127		1352
1128	static int	1353	static int
1129	api_cede_notself (void)	1354	api_cede_notself (void)
1130	{	1355	{
		1356	dTHX;
1131	struct transfer_args ta;	1357	struct transfer_args ta;
1132		1358
1133	if (prepare_cede_notself (&ta))	1359	if (prepare_cede_notself (aTHX_ &ta))
1134	{	1360	{
1135	TRANSFER (ta);	1361	TRANSFER (ta);
1136	return 1;	1362	return 1;
1137	}	1363	}
1138	else	1364	else
1139	return 0;	1365	return 0;
1140	}	1366	}
1141		1367
		1368	static void
		1369	api_trace (SV *coro_sv, int flags)
		1370	{
		1371	dTHX;
		1372	struct coro *coro = SvSTATE (coro_sv);
		1373
		1374	if (flags & CC_TRACE)
		1375	{
		1376	if (!coro->cctx)
		1377	coro->cctx = cctx_new ();
		1378	else if (!(coro->cctx->flags & CC_TRACE))
		1379	croak ("cannot enable tracing on coroutine with custom stack");
		1380
		1381	coro->cctx->flags |= CC_NOREUSE | (flags & (CC_TRACE | CC_TRACE_ALL));
		1382	}
		1383	else if (coro->cctx && coro->cctx->flags & CC_TRACE)
		1384	{
		1385	coro->cctx->flags &= ~(CC_TRACE | CC_TRACE_ALL);
		1386
		1387	if (coro->flags & CF_RUNNING)
		1388	PL_runops = RUNOPS_DEFAULT;
		1389	else
		1390	coro->runops = RUNOPS_DEFAULT;
		1391	}
		1392	}
		1393
1142	MODULE = Coro::State PACKAGE = Coro::State	1394	MODULE = Coro::State PACKAGE = Coro::State PREFIX = api_
1143		1395
1144	PROTOTYPES: DISABLE	1396	PROTOTYPES: DISABLE
1145		1397
1146	BOOT:	1398	BOOT:
1147	{	1399	{
1148	#ifdef USE_ITHREADS	1400	#ifdef USE_ITHREADS
1149	MUTEX_INIT (&coro_mutex);	1401	MUTEX_INIT (&coro_mutex);
1150	#endif	1402	#endif
1151	BOOT_PAGESIZE;	1403	BOOT_PAGESIZE;
1152		1404
		1405	irsgv = gv_fetchpv ("/" , GV_ADD|GV_NOTQUAL, SVt_PV);
		1406	stdoutgv = gv_fetchpv ("STDOUT", GV_ADD|GV_NOTQUAL, SVt_PVIO);
		1407
1153	coro_state_stash = gv_stashpv ("Coro::State", TRUE);	1408	coro_state_stash = gv_stashpv ("Coro::State", TRUE);
1154		1409
		1410	newCONSTSUB (coro_state_stash, "CC_TRACE" , newSViv (CC_TRACE));
		1411	newCONSTSUB (coro_state_stash, "CC_TRACE_SUB" , newSViv (CC_TRACE_SUB));
1155	newCONSTSUB (coro_state_stash, "SAVE_DEFAV", newSViv (CORO_SAVE_DEFAV));	1412	newCONSTSUB (coro_state_stash, "CC_TRACE_LINE", newSViv (CC_TRACE_LINE));
1156	newCONSTSUB (coro_state_stash, "SAVE_DEFSV", newSViv (CORO_SAVE_DEFSV));
1157	newCONSTSUB (coro_state_stash, "SAVE_ERRSV", newSViv (CORO_SAVE_ERRSV));
1158	newCONSTSUB (coro_state_stash, "SAVE_IRSSV", newSViv (CORO_SAVE_IRSSV));
1159	newCONSTSUB (coro_state_stash, "SAVE_ALL", newSViv (CORO_SAVE_ALL));	1413	newCONSTSUB (coro_state_stash, "CC_TRACE_ALL" , newSViv (CC_TRACE_ALL));
1160		1414
1161	main_mainstack = PL_mainstack;	1415	main_mainstack = PL_mainstack;
		1416	main_top_env = PL_top_env;
		1417
		1418	while (main_top_env->je_prev)
		1419	main_top_env = main_top_env->je_prev;
1162		1420
1163	coroapi.ver = CORO_API_VERSION;	1421	coroapi.ver = CORO_API_VERSION;
1164	coroapi.transfer = api_transfer;	1422	coroapi.transfer = api_transfer;
1165		1423
1166	assert (("PRIO_NORMAL must be 0", !PRIO_NORMAL));	1424	assert (("PRIO_NORMAL must be 0", !PRIO_NORMAL));
…		…
1173	struct coro *coro;	1431	struct coro *coro;
1174	HV *hv;	1432	HV *hv;
1175	int i;	1433	int i;
1176		1434
1177	Newz (0, coro, 1, struct coro);	1435	Newz (0, coro, 1, struct coro);
1178	coro->args = newAV ();	1436	coro->args = newAV ();
1179	coro->save = CORO_SAVE_ALL;
1180	coro->flags = CF_NEW;	1437	coro->flags = CF_NEW;
1181		1438
		1439	if (coro_first) coro_first->prev = coro;
		1440	coro->next = coro_first;
		1441	coro_first = coro;
		1442
1182	hv = newHV ();	1443	coro->hv = hv = newHV ();
1183	sv_magicext ((SV *)hv, 0, PERL_MAGIC_ext, &coro_state_vtbl, (char *)coro, 0)->mg_flags |= MGf_DUP;	1444	sv_magicext ((SV *)hv, 0, PERL_MAGIC_ext, &coro_state_vtbl, (char *)coro, 0)->mg_flags |= MGf_DUP;
1184	RETVAL = sv_bless (newRV_noinc ((SV *)hv), gv_stashpv (klass, 1));	1445	RETVAL = sv_bless (newRV_noinc ((SV *)hv), gv_stashpv (klass, 1));
1185		1446
		1447	av_extend (coro->args, items - 1);
1186	for (i = 1; i < items; i++)	1448	for (i = 1; i < items; i++)
1187	av_push (coro->args, newSVsv (ST (i)));	1449	av_push (coro->args, newSVsv (ST (i)));
1188	}	1450	}
1189	OUTPUT:	1451	OUTPUT:
1190	RETVAL	1452	RETVAL
1191		1453
1192	int	1454	# these not obviously related functions are all rolled into the same xs
1193	save (SV *coro, int new_save = -1)	1455	# function to increase chances that they all will call transfer with the same
1194	CODE:	1456	# stack offset
1195	RETVAL = api_save (coro, new_save);
1196	OUTPUT:
1197	RETVAL
1198
1199	void	1457	void
1200	_set_stacklevel (...)	1458	_set_stacklevel (...)
1201	ALIAS:	1459	ALIAS:
1202	Coro::State::transfer = 1	1460	Coro::State::transfer = 1
1203	Coro::schedule = 2	1461	Coro::schedule = 2
…		…
1216		1474
1217	case 1:	1475	case 1:
1218	if (items != 2)	1476	if (items != 2)
1219	croak ("Coro::State::transfer (prev,next) expects two arguments, not %d", items);	1477	croak ("Coro::State::transfer (prev,next) expects two arguments, not %d", items);
1220		1478
1221	prepare_transfer (&ta, ST (0), ST (1));	1479	prepare_transfer (aTHX_ &ta, ST (0), ST (1));
1222	break;	1480	break;
1223		1481
1224	case 2:	1482	case 2:
1225	prepare_schedule (&ta);	1483	prepare_schedule (aTHX_ &ta);
1226	break;	1484	break;
1227		1485
1228	case 3:	1486	case 3:
1229	prepare_cede (&ta);	1487	prepare_cede (aTHX_ &ta);
1230	break;	1488	break;
1231		1489
1232	case 4:	1490	case 4:
1233	if (!prepare_cede_notself (&ta))	1491	if (!prepare_cede_notself (aTHX_ &ta))
1234	XSRETURN_EMPTY;	1492	XSRETURN_EMPTY;
1235		1493
1236	break;	1494	break;
1237	}	1495	}
1238		1496
1239	BARRIER;	1497	BARRIER;
1240	TRANSFER (ta);	1498	TRANSFER (ta);
1241		1499
1242	if (GIMME_V != G_VOID && ta.next != ta.prev)	1500	if (expect_false (GIMME_V != G_VOID && ta.next != ta.prev))
1243	XSRETURN_YES;	1501	XSRETURN_YES;
1244	}	1502	}
1245		1503
1246	bool	1504	bool
1247	_destroy (SV *coro_sv)	1505	_destroy (SV *coro_sv)
1248	CODE:	1506	CODE:
1249	RETVAL = coro_state_destroy (SvSTATE (coro_sv));	1507	RETVAL = coro_state_destroy (aTHX_ SvSTATE (coro_sv));
1250	OUTPUT:	1508	OUTPUT:
1251	RETVAL	1509	RETVAL
1252		1510
1253	void	1511	void
1254	_exit (code)	1512	_exit (code)
…		…
1256	PROTOTYPE: $	1514	PROTOTYPE: $
1257	CODE:	1515	CODE:
1258	_exit (code);	1516	_exit (code);
1259		1517
1260	int	1518	int
		1519	cctx_stacksize (int new_stacksize = 0)
		1520	CODE:
		1521	RETVAL = coro_stacksize;
		1522	if (new_stacksize)
		1523	coro_stacksize = new_stacksize;
		1524	OUTPUT:
		1525	RETVAL
		1526
		1527	int
1261	cctx_count ()	1528	cctx_count ()
1262	CODE:	1529	CODE:
1263	RETVAL = cctx_count;	1530	RETVAL = cctx_count;
1264	OUTPUT:	1531	OUTPUT:
1265	RETVAL	1532	RETVAL
…		…
1269	CODE:	1536	CODE:
1270	RETVAL = cctx_idle;	1537	RETVAL = cctx_idle;
1271	OUTPUT:	1538	OUTPUT:
1272	RETVAL	1539	RETVAL
1273		1540
		1541	void
		1542	list ()
		1543	PPCODE:
		1544	{
		1545	struct coro *coro;
		1546	for (coro = coro_first; coro; coro = coro->next)
		1547	if (coro->hv)
		1548	XPUSHs (sv_2mortal (newRV_inc ((SV *)coro->hv)));
		1549	}
		1550
		1551	void
		1552	call (Coro::State coro, SV *coderef)
		1553	ALIAS:
		1554	eval = 1
		1555	CODE:
		1556	{
		1557	if (coro->mainstack)
		1558	{
		1559	struct coro temp;
		1560	Zero (&temp, 1, struct coro);
		1561
		1562	if (!(coro->flags & CF_RUNNING))
		1563	{
		1564	save_perl (aTHX_ &temp);
		1565	load_perl (aTHX_ coro);
		1566	}
		1567
		1568	{
		1569	dSP;
		1570	ENTER;
		1571	SAVETMPS;
		1572	PUSHMARK (SP);
		1573	PUTBACK;
		1574	if (ix)
		1575	eval_sv (coderef, 0);
		1576	else
		1577	call_sv (coderef, G_KEEPERR | G_EVAL | G_VOID | G_DISCARD);
		1578	SPAGAIN;
		1579	FREETMPS;
		1580	LEAVE;
		1581	PUTBACK;
		1582	}
		1583
		1584	if (!(coro->flags & CF_RUNNING))
		1585	{
		1586	save_perl (aTHX_ coro);
		1587	load_perl (aTHX_ &temp);
		1588	}
		1589	}
		1590	}
		1591
		1592	SV *
		1593	is_ready (Coro::State coro)
		1594	PROTOTYPE: $
		1595	ALIAS:
		1596	is_ready = CF_READY
		1597	is_running = CF_RUNNING
		1598	is_new = CF_NEW
		1599	is_destroyed = CF_DESTROYED
		1600	CODE:
		1601	RETVAL = boolSV (coro->flags & ix);
		1602	OUTPUT:
		1603	RETVAL
		1604
		1605	void
		1606	api_trace (SV *coro, int flags = CC_TRACE | CC_TRACE_SUB)
		1607
		1608	SV *
		1609	has_stack (Coro::State coro)
		1610	PROTOTYPE: $
		1611	CODE:
		1612	RETVAL = boolSV (!!coro->cctx);
		1613	OUTPUT:
		1614	RETVAL
		1615
		1616	int
		1617	is_traced (Coro::State coro)
		1618	PROTOTYPE: $
		1619	CODE:
		1620	RETVAL = (coro->cctx ? coro->cctx->flags : 0) & CC_TRACE_ALL;
		1621	OUTPUT:
		1622	RETVAL
		1623
		1624	IV
		1625	rss (Coro::State coro)
		1626	PROTOTYPE: $
		1627	ALIAS:
		1628	usecount = 1
		1629	CODE:
		1630	switch (ix)
		1631	{
		1632	case 0: RETVAL = coro_rss (aTHX_ coro); break;
		1633	case 1: RETVAL = coro->usecount; break;
		1634	}
		1635	OUTPUT:
		1636	RETVAL
		1637
		1638
1274	MODULE = Coro::State PACKAGE = Coro	1639	MODULE = Coro::State PACKAGE = Coro
1275		1640
1276	BOOT:	1641	BOOT:
1277	{	1642	{
1278	int i;	1643	int i;
		1644
		1645	sv_pool_rss = get_sv ("Coro::POOL_RSS" , TRUE);
		1646	sv_pool_size = get_sv ("Coro::POOL_SIZE" , TRUE);
		1647	av_async_pool = get_av ("Coro::async_pool", TRUE);
		1648
		1649	coro_current = get_sv ("Coro::current", FALSE);
		1650	SvREADONLY_on (coro_current);
1279		1651
1280	coro_stash = gv_stashpv ("Coro", TRUE);	1652	coro_stash = gv_stashpv ("Coro", TRUE);
1281		1653
1282	newCONSTSUB (coro_stash, "PRIO_MAX", newSViv (PRIO_MAX));	1654	newCONSTSUB (coro_stash, "PRIO_MAX", newSViv (PRIO_MAX));
1283	newCONSTSUB (coro_stash, "PRIO_HIGH", newSViv (PRIO_HIGH));	1655	newCONSTSUB (coro_stash, "PRIO_HIGH", newSViv (PRIO_HIGH));
1284	newCONSTSUB (coro_stash, "PRIO_NORMAL", newSViv (PRIO_NORMAL));	1656	newCONSTSUB (coro_stash, "PRIO_NORMAL", newSViv (PRIO_NORMAL));
1285	newCONSTSUB (coro_stash, "PRIO_LOW", newSViv (PRIO_LOW));	1657	newCONSTSUB (coro_stash, "PRIO_LOW", newSViv (PRIO_LOW));
1286	newCONSTSUB (coro_stash, "PRIO_IDLE", newSViv (PRIO_IDLE));	1658	newCONSTSUB (coro_stash, "PRIO_IDLE", newSViv (PRIO_IDLE));
1287	newCONSTSUB (coro_stash, "PRIO_MIN", newSViv (PRIO_MIN));	1659	newCONSTSUB (coro_stash, "PRIO_MIN", newSViv (PRIO_MIN));
1288		1660
1289	coro_current = get_sv ("Coro::current", FALSE);
1290	SvREADONLY_on (coro_current);
1291
1292	for (i = PRIO_MAX - PRIO_MIN + 1; i--; )	1661	for (i = PRIO_MAX - PRIO_MIN + 1; i--; )
1293	coro_ready[i] = newAV ();	1662	coro_ready[i] = newAV ();
1294		1663
1295	{	1664	{
1296	SV *sv = perl_get_sv("Coro::API", 1);	1665	SV *sv = perl_get_sv("Coro::API", 1);
1297		1666
1298	coroapi.schedule = api_schedule;	1667	coroapi.schedule = api_schedule;
1299	coroapi.save = api_save;
1300	coroapi.cede = api_cede;	1668	coroapi.cede = api_cede;
1301	coroapi.cede_notself = api_cede_notself;	1669	coroapi.cede_notself = api_cede_notself;
1302	coroapi.ready = api_ready;	1670	coroapi.ready = api_ready;
1303	coroapi.is_ready = api_is_ready;	1671	coroapi.is_ready = api_is_ready;
1304	coroapi.nready = &coro_nready;	1672	coroapi.nready = &coro_nready;
…		…
1345	CODE:	1713	CODE:
1346	RETVAL = boolSV (api_ready (self));	1714	RETVAL = boolSV (api_ready (self));
1347	OUTPUT:	1715	OUTPUT:
1348	RETVAL	1716	RETVAL
1349		1717
1350	SV *
1351	is_ready (SV *self)
1352	PROTOTYPE: $
1353	CODE:
1354	RETVAL = boolSV (api_is_ready (self));
1355	OUTPUT:
1356	RETVAL
1357
1358	int	1718	int
1359	nready (...)	1719	nready (...)
1360	PROTOTYPE:	1720	PROTOTYPE:
1361	CODE:	1721	CODE:
1362	RETVAL = coro_nready;	1722	RETVAL = coro_nready;
1363	OUTPUT:	1723	OUTPUT:
1364	RETVAL	1724	RETVAL
1365		1725
		1726	# for async_pool speedup
		1727	void
		1728	_pool_1 (SV *cb)
		1729	CODE:
		1730	{
		1731	struct coro *coro = SvSTATE (coro_current);
		1732	HV *hv = (HV *)SvRV (coro_current);
		1733	AV *defav = GvAV (PL_defgv);
		1734	SV *invoke = hv_delete (hv, "_invoke", sizeof ("_invoke") - 1, 0);
		1735	AV *invoke_av;
		1736	int i, len;
		1737
		1738	if (!invoke)
		1739	croak ("\3terminate\2\n");
		1740
		1741	SvREFCNT_dec (coro->saved_deffh);
		1742	coro->saved_deffh = SvREFCNT_inc ((SV *)PL_defoutgv);
		1743
		1744	hv_store (hv, "desc", sizeof ("desc") - 1,
		1745	newSVpvn ("[async_pool]", sizeof ("[async_pool]") - 1), 0);
		1746
		1747	invoke_av = (AV *)SvRV (invoke);
		1748	len = av_len (invoke_av);
		1749
		1750	sv_setsv (cb, AvARRAY (invoke_av)[0]);
		1751
		1752	if (len > 0)
		1753	{
		1754	av_fill (defav, len - 1);
		1755	for (i = 0; i < len; ++i)
		1756	av_store (defav, i, SvREFCNT_inc (AvARRAY (invoke_av)[i + 1]));
		1757	}
		1758
		1759	SvREFCNT_dec (invoke);
		1760	}
		1761
		1762	void
		1763	_pool_2 (SV *cb)
		1764	CODE:
		1765	{
		1766	struct coro *coro = SvSTATE (coro_current);
		1767
		1768	sv_setsv (cb, &PL_sv_undef);
		1769
		1770	SvREFCNT_dec ((SV *)PL_defoutgv); PL_defoutgv = (GV *)coro->saved_deffh;
		1771	coro->saved_deffh = 0;
		1772
		1773	if (coro_rss (aTHX_ coro) > SvIV (sv_pool_rss)
		1774	|| av_len (av_async_pool) + 1 >= SvIV (sv_pool_size))
		1775	croak ("\3terminate\2\n");
		1776
		1777	av_clear (GvAV (PL_defgv));
		1778	hv_store ((HV *)SvRV (coro_current), "desc", sizeof ("desc") - 1,
		1779	newSVpvn ("[async_pool idle]", sizeof ("[async_pool idle]") - 1), 0);
		1780
		1781	coro->prio = 0;
		1782
		1783	if (coro->cctx && (coro->cctx->flags & CC_TRACE))
		1784	api_trace (coro_current, 0);
		1785
		1786	av_push (av_async_pool, newSVsv (coro_current));
		1787	}
		1788
		1789
1366	MODULE = Coro::State PACKAGE = Coro::AIO	1790	MODULE = Coro::State PACKAGE = Coro::AIO
1367		1791
1368	SV *	1792	SV *
1369	_get_state ()	1793	_get_state ()
1370	CODE:	1794	CODE:

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