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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 1.194 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>
		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
…		…
70	/* 5.8.7 */	75	/* 5.8.7 */
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
		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
75	#if !__i386 && !__x86_64 && !__powerpc && !__m68k && !__alpha && !__mips && !__sparc64	88	#if !__i386 && !__x86_64 && !__powerpc && !__m68k && !__alpha && !__mips && !__sparc64
76	# undef STACKGUARD	89	# undef CORO_STACKGUARD
77	#endif	90	#endif
78		91
79	#ifndef STACKGUARD	92	#ifndef CORO_STACKGUARD
80	# define STACKGUARD 0	93	# define CORO_STACKGUARD 0
81	#endif	94	#endif
82		95
83	/* prefer perl internal functions over our own? */	96	/* prefer perl internal functions over our own? */
84	#ifndef PREFER_PERL_FUNCTIONS	97	#ifndef CORO_PREFER_PERL_FUNCTIONS
85	# define PREFER_PERL_FUNCTIONS 0	98	# define CORO_PREFER_PERL_FUNCTIONS 0
86	#endif	99	#endif
87		100
88	/* 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
89	* to the current C stack pointer. Its property is that it changes with each call	102	* portable way as possible. */
90	* and should be unique. */
91	#define dSTACKLEVEL int stacklevel	103	#define dSTACKLEVEL volatile char stacklevel
92	#define STACKLEVEL ((void *)&stacklevel)	104	#define STACKLEVEL ((void *)&stacklevel)
93		105
94	#define IN_DESTRUCT (PL_main_cv == Nullcv)	106	#define IN_DESTRUCT (PL_main_cv == Nullcv)
95		107
96	#if __GNUC__ >= 3	108	#if __GNUC__ >= 3
97	# define attribute(x) __attribute__(x)	109	# define attribute(x) __attribute__(x)
		110	# define BARRIER __asm__ __volatile__ ("" : : : "memory")
		111	# define expect(expr,value) __builtin_expect ((expr),(value))
98	#else	112	#else
99	# define attribute(x)	113	# define attribute(x)
		114	# define BARRIER
		115	# define expect(expr,value) (expr)
100	#endif	116	#endif
		117
		118	#define expect_false(expr) expect ((expr) != 0, 0)
		119	#define expect_true(expr) expect ((expr) != 0, 1)
101		120
102	#define NOINLINE attribute ((noinline))	121	#define NOINLINE attribute ((noinline))
103		122
104	#include "CoroAPI.h"	123	#include "CoroAPI.h"
105		124
…		…
110	#else	129	#else
111	# define LOCK (void)0	130	# define LOCK (void)0
112	# define UNLOCK (void)0	131	# define UNLOCK (void)0
113	#endif	132	#endif
114		133
		134	/* helper storage struct for Coro::AIO */
115	struct io_state	135	struct io_state
116	{	136	{
117	int errorno;	137	int errorno;
118	I32 laststype;	138	I32 laststype;
119	int laststatval;	139	int laststatval;
120	Stat_t statcache;	140	Stat_t statcache;
121	};	141	};
122		142
		143	static size_t coro_stacksize = CORO_STACKSIZE;
123	static struct CoroAPI coroapi;	144	static struct CoroAPI coroapi;
124	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;
125	static HV *coro_state_stash, *coro_stash;	147	static HV *coro_state_stash, *coro_stash;
126	static SV *coro_mortal; /* will be freed after next transfer */	148	static SV *coro_mortal; /* will be freed after next transfer */
127		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
128	static struct coro_cctx *cctx_first;	158	static struct coro_cctx *cctx_first;
129	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	};
130		169
131	/* this is a structure representing a c-level coroutine */	170	/* this is a structure representing a c-level coroutine */
132	typedef struct coro_cctx {	171	typedef struct coro_cctx {
133	struct coro_cctx *next;	172	struct coro_cctx *next;
134		173
135	/* the stack */	174	/* the stack */
136	void *sptr;	175	void *sptr;
137	long ssize; /* positive == mmap, otherwise malloc */	176	size_t ssize;
138		177
139	/* cpu state */	178	/* cpu state */
140	void *idle_sp; /* sp of top-level transfer/schedule/cede call */	179	void *idle_sp; /* sp of top-level transfer/schedule/cede call */
		180	JMPENV *idle_te; /* same as idle_sp, but for top_env, TODO: remove once stable */
141	JMPENV *top_env;	181	JMPENV *top_env;
142	coro_context cctx;	182	coro_context cctx;
143		183
144	int inuse;
145
146	#if USE_VALGRIND	184	#if CORO_USE_VALGRIND
147	int valgrind_id;	185	int valgrind_id;
148	#endif	186	#endif
		187	unsigned char flags;
149	} coro_cctx;	188	} coro_cctx;
150		189
151	enum {	190	enum {
152	CF_RUNNING = 0x0001, /* coroutine is running */	191	CF_RUNNING = 0x0001, /* coroutine is running */
153	CF_READY = 0x0002, /* coroutine is ready */	192	CF_READY = 0x0002, /* coroutine is ready */
154	CF_NEW = 0x0004, /* ahs never been switched to */	193	CF_NEW = 0x0004, /* has never been switched to */
		194	CF_DESTROYED = 0x0008, /* coroutine data has been freed */
155	};	195	};
156		196
157	/* this is a structure representing a perl-level coroutine */	197	/* this is a structure representing a perl-level coroutine */
158	struct coro {	198	struct coro {
159	/* the c coroutine allocated to this perl coroutine, if any */	199	/* the c coroutine allocated to this perl coroutine, if any */
160	coro_cctx *cctx;	200	coro_cctx *cctx;
161		201
162	/* data associated with this coroutine (initial args) */	202	/* data associated with this coroutine (initial args) */
163	AV *args;	203	AV *args;
164	int refcnt;	204	int refcnt;
165	int save; /* CORO_SAVE flags */
166	int flags; /* CF_ flags */	205	int flags; /* CF_ flags */
167		206
168	/* optionally saved, might be zero */	207	/* optionally saved, might be zero */
169	AV *defav; /* @_ */	208	AV *defav; /* @_ */
170	SV *defsv; /* $_ */	209	SV *defsv; /* $_ */
171	SV *errsv; /* $@ */	210	SV *errsv; /* $@ */
		211	SV *deffh; /* default filehandle */
172	SV *irssv; /* $/ */	212	SV *irssv; /* $/ */
173	SV *irssv_sv; /* real $/ cache */	213	SV *irssv_sv; /* real $/ cache */
174		214
175	#define VAR(name,type) type name;	215	#define VAR(name,type) type name;
176	# include "state.h"	216	# include "state.h"
177	#undef VAR	217	#undef VAR
178		218
		219	/* statistics */
		220	int usecount; /* number of transfers to this coro */
		221
179	/* coro process data */	222	/* coro process data */
180	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 */
181	};	232	};
182		233
183	typedef struct coro *Coro__State;	234	typedef struct coro *Coro__State;
184	typedef struct coro *Coro__State_or_hashref;	235	typedef struct coro *Coro__State_or_hashref;
185		236
		237	/** Coro ********************************************************************/
		238
		239	#define PRIO_MAX 3
		240	#define PRIO_HIGH 1
		241	#define PRIO_NORMAL 0
		242	#define PRIO_LOW -1
		243	#define PRIO_IDLE -3
		244	#define PRIO_MIN -4
		245
		246	/* for Coro.pm */
		247	static SV *coro_current;
		248	static AV *coro_ready [PRIO_MAX-PRIO_MIN+1];
		249	static int coro_nready;
		250	static struct coro *coro_first;
		251
		252	/** lowlevel stuff **********************************************************/
		253
186	static AV *	254	static AV *
187	coro_clone_padlist (CV *cv)	255	coro_clone_padlist (pTHX_ CV *cv)
188	{	256	{
189	AV *padlist = CvPADLIST (cv);	257	AV *padlist = CvPADLIST (cv);
190	AV *newpadlist, *newpad;	258	AV *newpadlist, *newpad;
191		259
192	newpadlist = newAV ();	260	newpadlist = newAV ();
…		…
204		272
205	return newpadlist;	273	return newpadlist;
206	}	274	}
207		275
208	static void	276	static void
209	free_padlist (AV *padlist)	277	free_padlist (pTHX_ AV *padlist)
210	{	278	{
211	/* may be during global destruction */	279	/* may be during global destruction */
212	if (SvREFCNT (padlist))	280	if (SvREFCNT (padlist))
213	{	281	{
214	I32 i = AvFILLp (padlist);	282	I32 i = AvFILLp (padlist);
…		…
235	AV *padlist;	303	AV *padlist;
236	AV *av = (AV *)mg->mg_obj;	304	AV *av = (AV *)mg->mg_obj;
237		305
238	/* casting is fun. */	306	/* casting is fun. */
239	while (&PL_sv_undef != (SV *)(padlist = (AV *)av_pop (av)))	307	while (&PL_sv_undef != (SV *)(padlist = (AV *)av_pop (av)))
240	free_padlist (padlist);	308	free_padlist (aTHX_ padlist);
241		309
242	SvREFCNT_dec (av);	310	SvREFCNT_dec (av);
243		311
244	return 0;	312	return 0;
245	}	313	}
…		…
253	? SvMAGIC (cv)->mg_type == PERL_MAGIC_coro \	321	? SvMAGIC (cv)->mg_type == PERL_MAGIC_coro \
254	? SvMAGIC (cv) \	322	? SvMAGIC (cv) \
255	: mg_find ((SV *)cv, PERL_MAGIC_coro) \	323	: mg_find ((SV *)cv, PERL_MAGIC_coro) \
256	: 0	324	: 0
257		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
258	/* the next two functions merely cache the padlists */	352	/* the next two functions merely cache the padlists */
259	static void	353	static void
260	get_padlist (CV *cv)	354	get_padlist (pTHX_ CV *cv)
261	{	355	{
262	MAGIC *mg = CORO_MAGIC (cv);	356	MAGIC *mg = CORO_MAGIC (cv);
263	AV *av;	357	AV *av;
264		358
265	if (mg && AvFILLp ((av = (AV *)mg->mg_obj)) >= 0)	359	if (expect_true (mg && AvFILLp ((av = (AV *)mg->mg_obj)) >= 0))
266	CvPADLIST (cv) = (AV *)AvARRAY (av)[AvFILLp (av)--];	360	CvPADLIST (cv) = (AV *)AvARRAY (av)[AvFILLp (av)--];
267	else	361	else
268	{	362	{
269	#if PREFER_PERL_FUNCTIONS	363	#if CORO_PREFER_PERL_FUNCTIONS
270	/* this is probably cleaner, but also slower? */	364	/* this is probably cleaner, but also slower? */
271	CV *cp = Perl_cv_clone (cv);	365	CV *cp = Perl_cv_clone (cv);
272	CvPADLIST (cv) = CvPADLIST (cp);	366	CvPADLIST (cv) = CvPADLIST (cp);
273	CvPADLIST (cp) = 0;	367	CvPADLIST (cp) = 0;
274	SvREFCNT_dec (cp);	368	SvREFCNT_dec (cp);
275	#else	369	#else
276	CvPADLIST (cv) = coro_clone_padlist (cv);	370	CvPADLIST (cv) = coro_clone_padlist (aTHX_ cv);
277	#endif	371	#endif
278	}	372	}
279	}	373	}
280		374
281	static void	375	static void
282	put_padlist (CV *cv)	376	put_padlist (pTHX_ CV *cv)
283	{	377	{
284	MAGIC *mg = CORO_MAGIC (cv);	378	MAGIC *mg = CORO_MAGIC (cv);
285	AV *av;	379	AV *av;
286		380
287	if (!mg)	381	if (expect_false (!mg))
288	{	382	{
289	sv_magic ((SV *)cv, 0, PERL_MAGIC_coro, 0, 0);	383	sv_magic ((SV *)cv, 0, PERL_MAGIC_coro, 0, 0);
290	mg = mg_find ((SV *)cv, PERL_MAGIC_coro);	384	mg = mg_find ((SV *)cv, PERL_MAGIC_coro);
291	mg->mg_virtual = &vtbl_coro;	385	mg->mg_virtual = &vtbl_coro;
292	mg->mg_obj = (SV *)newAV ();	386	mg->mg_obj = (SV *)newAV ();
293	}	387	}
294		388
295	av = (AV *)mg->mg_obj;	389	av = (AV *)mg->mg_obj;
296		390
297	if (AvFILLp (av) >= AvMAX (av))	391	if (expect_false (AvFILLp (av) >= AvMAX (av)))
298	av_extend (av, AvMAX (av) + 1);	392	av_extend (av, AvMAX (av) + 1);
299		393
300	AvARRAY (av)[++AvFILLp (av)] = (SV *)CvPADLIST (cv);	394	AvARRAY (av)[++AvFILLp (av)] = (SV *)CvPADLIST (cv);
301	}	395	}
302		396
303	#define SB do {	397	/** load & save, init *******************************************************/
304	#define SE } while (0)
305		398
306	#define REPLACE_SV(sv,val) SB SvREFCNT_dec (sv); (sv) = (val); (val) = 0; SE
307
308	static void	399	static void
309	load_perl (Coro__State c)	400	load_perl (pTHX_ Coro__State c)
310	{	401	{
311	#define VAR(name,type) PL_ ## name = c->name;	402	#define VAR(name,type) PL_ ## name = c->name;
312	# include "state.h"	403	# include "state.h"
313	#undef VAR	404	#undef VAR
314		405
315	if (c->defav) REPLACE_SV (GvAV (PL_defgv), c->defav);	406	GvSV (PL_defgv) = c->defsv;
316	if (c->defsv) REPLACE_SV (DEFSV , c->defsv);	407	GvAV (PL_defgv) = c->defav;
317	if (c->errsv) REPLACE_SV (ERRSV , c->errsv);	408	GvSV (PL_errgv) = c->errsv;
318	if (c->irssv)	409	GvSV (irsgv) = c->irssv_sv;
319	{
320	if (c->irssv == PL_rs || sv_eq (PL_rs, c->irssv))
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		410
330	{	411	{
331	dSP;	412	dSP;
332	CV *cv;	413	CV *cv;
333		414
334	/* now do the ugly restore mess */	415	/* now do the ugly restore mess */
335	while ((cv = (CV *)POPs))	416	while (expect_true (cv = (CV *)POPs))
336	{	417	{
337	put_padlist (cv); /* mark this padlist as available */	418	put_padlist (aTHX_ cv); /* mark this padlist as available */
338	CvDEPTH (cv) = PTR2IV (POPs);	419	CvDEPTH (cv) = PTR2IV (POPs);
339	CvPADLIST (cv) = (AV *)POPs;	420	CvPADLIST (cv) = (AV *)POPs;
340	}	421	}
341		422
342	PUTBACK;	423	PUTBACK;
343	}	424	}
344	}	425	}
345		426
346	static void	427	static void
347	save_perl (Coro__State c)	428	save_perl (pTHX_ Coro__State c)
348	{	429	{
349	{	430	{
350	dSP;	431	dSP;
351	I32 cxix = cxstack_ix;	432	I32 cxix = cxstack_ix;
352	PERL_CONTEXT *ccstk = cxstack;	433	PERL_CONTEXT *ccstk = cxstack;
…		…
355	/*	436	/*
356	* 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
357	* (and reinitialize) all cv's in the whole callchain :(	438	* (and reinitialize) all cv's in the whole callchain :(
358	*/	439	*/
359		440
360	EXTEND (SP, 3 + 1);
361	PUSHs (Nullsv);	441	XPUSHs (Nullsv);
362	/* this loop was inspired by pp_caller */	442	/* this loop was inspired by pp_caller */
363	for (;;)	443	for (;;)
364	{	444	{
365	while (cxix >= 0)	445	while (expect_true (cxix >= 0))
366	{	446	{
367	PERL_CONTEXT *cx = &ccstk[cxix--];	447	PERL_CONTEXT *cx = &ccstk[cxix--];
368		448
369	if (CxTYPE (cx) == CXt_SUB)	449	if (expect_true (CxTYPE (cx) == CXt_SUB || CxTYPE (cx) == CXt_FORMAT))
370	{	450	{
371	CV *cv = cx->blk_sub.cv;	451	CV *cv = cx->blk_sub.cv;
372		452
373	if (CvDEPTH (cv))	453	if (expect_true (CvDEPTH (cv)))
374	{	454	{
375	EXTEND (SP, 3);	455	EXTEND (SP, 3);
376	PUSHs ((SV *)CvPADLIST (cv));	456	PUSHs ((SV *)CvPADLIST (cv));
377	PUSHs (INT2PTR (SV *, CvDEPTH (cv)));	457	PUSHs (INT2PTR (SV *, CvDEPTH (cv)));
378	PUSHs ((SV *)cv);	458	PUSHs ((SV *)cv);
379		459
380	CvDEPTH (cv) = 0;	460	CvDEPTH (cv) = 0;
381	get_padlist (cv);	461	get_padlist (aTHX_ cv);
382	}	462	}
383	}	463	}
384	}	464	}
385		465
386	if (top_si->si_type == PERLSI_MAIN)	466	if (expect_true (top_si->si_type == PERLSI_MAIN))
387	break;	467	break;
388		468
389	top_si = top_si->si_prev;	469	top_si = top_si->si_prev;
390	ccstk = top_si->si_cxstack;	470	ccstk = top_si->si_cxstack;
391	cxix = top_si->si_cxix;	471	cxix = top_si->si_cxix;
392	}	472	}
393		473
394	PUTBACK;	474	PUTBACK;
395	}	475	}
396		476
397	c->defav = c->save & CORO_SAVE_DEFAV ? (AV *)SvREFCNT_inc (GvAV (PL_defgv)) : 0;	477	c->defav = GvAV (PL_defgv);
398	c->defsv = c->save & CORO_SAVE_DEFSV ? SvREFCNT_inc (DEFSV) : 0;	478	c->defsv = DEFSV;
399	c->errsv = c->save & CORO_SAVE_ERRSV ? SvREFCNT_inc (ERRSV) : 0;	479	c->errsv = ERRSV;
400	c->irssv = c->save & CORO_SAVE_IRSSV ? SvREFCNT_inc (PL_rs) : 0;	480	c->irssv_sv = GvSV (irsgv);
401		481
402	#define VAR(name,type)c->name = PL_ ## name;	482	#define VAR(name,type)c->name = PL_ ## name;
403	# include "state.h"	483	# include "state.h"
404	#undef VAR	484	#undef VAR
405	}	485	}
…		…
408	* allocate various perl stacks. This is an exact copy	488	* allocate various perl stacks. This is an exact copy
409	* of perl.c:init_stacks, except that it uses less memory	489	* of perl.c:init_stacks, except that it uses less memory
410	* on the (sometimes correct) assumption that coroutines do	490	* on the (sometimes correct) assumption that coroutines do
411	* not usually need a lot of stackspace.	491	* not usually need a lot of stackspace.
412	*/	492	*/
413	#if PREFER_PERL_FUNCTIONS	493	#if CORO_PREFER_PERL_FUNCTIONS
414	# define coro_init_stacks init_stacks	494	# define coro_init_stacks init_stacks
415	#else	495	#else
416	static void	496	static void
417	coro_init_stacks ()	497	coro_init_stacks (pTHX)
418	{	498	{
419	PL_curstackinfo = new_stackinfo(128, 1024/sizeof(PERL_CONTEXT));	499	PL_curstackinfo = new_stackinfo(64, 6);
420	PL_curstackinfo->si_type = PERLSI_MAIN;	500	PL_curstackinfo->si_type = PERLSI_MAIN;
421	PL_curstack = PL_curstackinfo->si_stack;	501	PL_curstack = PL_curstackinfo->si_stack;
422	PL_mainstack = PL_curstack; /* remember in case we switch stacks */	502	PL_mainstack = PL_curstack; /* remember in case we switch stacks */
423		503
424	PL_stack_base = AvARRAY(PL_curstack);	504	PL_stack_base = AvARRAY(PL_curstack);
425	PL_stack_sp = PL_stack_base;	505	PL_stack_sp = PL_stack_base;
426	PL_stack_max = PL_stack_base + AvMAX(PL_curstack);	506	PL_stack_max = PL_stack_base + AvMAX(PL_curstack);
427		507
428	New(50,PL_tmps_stack,128,SV*);	508	New(50,PL_tmps_stack,64,SV*);
429	PL_tmps_floor = -1;	509	PL_tmps_floor = -1;
430	PL_tmps_ix = -1;	510	PL_tmps_ix = -1;
431	PL_tmps_max = 128;	511	PL_tmps_max = 64;
432		512
433	New(54,PL_markstack,32,I32);	513	New(54,PL_markstack,16,I32);
434	PL_markstack_ptr = PL_markstack;	514	PL_markstack_ptr = PL_markstack;
435	PL_markstack_max = PL_markstack + 32;	515	PL_markstack_max = PL_markstack + 16;
436		516
437	#ifdef SET_MARK_OFFSET	517	#ifdef SET_MARK_OFFSET
438	SET_MARK_OFFSET;	518	SET_MARK_OFFSET;
439	#endif	519	#endif
440		520
441	New(54,PL_scopestack,32,I32);	521	New(54,PL_scopestack,16,I32);
442	PL_scopestack_ix = 0;	522	PL_scopestack_ix = 0;
443	PL_scopestack_max = 32;	523	PL_scopestack_max = 16;
444		524
445	New(54,PL_savestack,64,ANY);	525	New(54,PL_savestack,64,ANY);
446	PL_savestack_ix = 0;	526	PL_savestack_ix = 0;
447	PL_savestack_max = 64;	527	PL_savestack_max = 64;
448		528
449	#if !PERL_VERSION_ATLEAST (5,9,0)	529	#if !PERL_VERSION_ATLEAST (5,9,0)
450	New(54,PL_retstack,16,OP*);	530	New(54,PL_retstack,4,OP*);
451	PL_retstack_ix = 0;	531	PL_retstack_ix = 0;
452	PL_retstack_max = 16;	532	PL_retstack_max = 4;
453	#endif	533	#endif
454	}	534	}
455	#endif	535	#endif
456		536
457	/*	537	/*
458	* destroy the stacks, the callchain etc...	538	* destroy the stacks, the callchain etc...
459	*/	539	*/
460	static void	540	static void
461	coro_destroy_stacks ()	541	coro_destroy_stacks (pTHX)
462	{	542	{
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)	543	while (PL_curstackinfo->si_next)
477	PL_curstackinfo = PL_curstackinfo->si_next;	544	PL_curstackinfo = PL_curstackinfo->si_next;
478		545
479	while (PL_curstackinfo)	546	while (PL_curstackinfo)
480	{	547	{
…		…
495	#if !PERL_VERSION_ATLEAST (5,9,0)	562	#if !PERL_VERSION_ATLEAST (5,9,0)
496	Safefree (PL_retstack);	563	Safefree (PL_retstack);
497	#endif	564	#endif
498	}	565	}
499		566
500	static void	567	static size_t
501	setup_coro (struct coro *coro)	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
		598	/** coroutine stack handling ************************************************/
		599
		600	static void
		601	coro_setup (pTHX_ struct coro *coro)
502	{	602	{
503	/*	603	/*
504	* emulate part of the perl startup here.	604	* emulate part of the perl startup here.
505	*/	605	*/
506
507	coro_init_stacks ();	606	coro_init_stacks (aTHX);
508		607
		608	PL_runops = RUNOPS_DEFAULT;
509	PL_curcop = &PL_compiling;	609	PL_curcop = &PL_compiling;
510	PL_in_eval = EVAL_NULL;	610	PL_in_eval = EVAL_NULL;
		611	PL_comppad = 0;
511	PL_curpm = 0;	612	PL_curpm = 0;
512	PL_localizing = 0;	613	PL_localizing = 0;
513	PL_dirty = 0;	614	PL_dirty = 0;
514	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 */
515		625
516	{	626	{
517	dSP;	627	dSP;
518	LOGOP myop;	628	LOGOP myop;
519		629
520	SvREFCNT_dec (GvAV (PL_defgv));
521	GvAV (PL_defgv) = coro->args; coro->args = 0;
522
523	Zero (&myop, 1, LOGOP);	630	Zero (&myop, 1, LOGOP);
524	myop.op_next = Nullop;	631	myop.op_next = Nullop;
525	myop.op_flags = OPf_WANT_VOID;	632	myop.op_flags = OPf_WANT_VOID;
526		633
527	PUSHMARK (SP);	634	PUSHMARK (SP);
528	XPUSHs ((SV *)get_cv ("Coro::State::_coro_init", FALSE));	635	XPUSHs (sv_2mortal (av_shift (GvAV (PL_defgv))));
529	PUTBACK;	636	PUTBACK;
530	PL_op = (OP *)&myop;	637	PL_op = (OP *)&myop;
531	PL_op = PL_ppaddr[OP_ENTERSUB](aTHX);	638	PL_op = PL_ppaddr[OP_ENTERSUB](aTHX);
532	SPAGAIN;	639	SPAGAIN;
533	}	640	}
534
535	ENTER; /* necessary e.g. for dounwind */
536	}	641	}
537		642
538	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
539	free_coro_mortal ()	677	free_coro_mortal (pTHX)
540	{	678	{
541	if (coro_mortal)	679	if (expect_true (coro_mortal))
542	{	680	{
543	SvREFCNT_dec (coro_mortal);	681	SvREFCNT_dec (coro_mortal);
544	coro_mortal = 0;	682	coro_mortal = 0;
545	}	683	}
546	}	684	}
547		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
548	/* 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 */
549	static void NOINLINE	813	static void NOINLINE
550	prepare_cctx (coro_cctx *cctx)	814	prepare_cctx (pTHX_ coro_cctx *cctx)
551	{	815	{
552	dSP;	816	dSP;
553	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;
554		823
555	Zero (&myop, 1, LOGOP);	824	Zero (&myop, 1, LOGOP);
556	myop.op_next = PL_op;	825	myop.op_next = PL_op;
557	myop.op_flags = OPf_WANT_VOID | OPf_STACKED;	826	myop.op_flags = OPf_WANT_VOID | OPf_STACKED;
558		827
…		…
564	PL_op = (OP *)&myop;	833	PL_op = (OP *)&myop;
565	PL_op = PL_ppaddr[OP_ENTERSUB](aTHX);	834	PL_op = PL_ppaddr[OP_ENTERSUB](aTHX);
566	SPAGAIN;	835	SPAGAIN;
567	}	836	}
568		837
		838	/*
		839	* this is a _very_ stripped down perl interpreter ;)
		840	*/
569	static void	841	static void
570	coro_run (void *arg)	842	coro_run (void *arg)
571	{	843	{
		844	dTHX;
		845
572	/* coro_run is the alternative tail of transfer(), so unlock here. */	846	/* coro_run is the alternative tail of transfer(), so unlock here. */
573	UNLOCK;	847	UNLOCK;
574		848
575	/*	849	/* we now skip the entersub that lead to transfer() */
576	* this is a _very_ stripped down perl interpreter ;)	850	PL_op = PL_op->op_next;
577	*/
578	PL_top_env = &PL_start_env;
579		851
580	/* inject call to cctx_init */	852	/* inject a fake subroutine call to cctx_init */
581	prepare_cctx ((coro_cctx *)arg);	853	prepare_cctx (aTHX_ (coro_cctx *)arg);
582		854
583	/* 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 */
584	PL_restartop = PL_op;	856	PL_restartop = PL_op;
585	perl_run (PL_curinterp);	857	perl_run (PL_curinterp);
586		858
587	fputs ("FATAL: C coroutine fell over the edge of the world, aborting. Did you call exit in a coroutine?\n", stderr);	859	/*
588	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 */
589	}	868	}
590		869
591	static coro_cctx *	870	static coro_cctx *
592	cctx_new ()	871	cctx_new ()
593	{	872	{
594	coro_cctx *cctx;	873	coro_cctx *cctx;
		874	void *stack_start;
		875	size_t stack_size;
595		876
596	++cctx_count;	877	++cctx_count;
597		878
598	Newz (0, cctx, 1, coro_cctx);	879	Newz (0, cctx, 1, coro_cctx);
599		880
600	#if HAVE_MMAP	881	#if HAVE_MMAP
601		882
602	cctx->ssize = ((STACKSIZE * sizeof (long) + PAGESIZE - 1) / PAGESIZE + STACKGUARD) * PAGESIZE;	883	cctx->ssize = ((coro_stacksize * sizeof (long) + PAGESIZE - 1) / PAGESIZE + CORO_STACKGUARD) * PAGESIZE;
603	/* mmap supposedly does allocate-on-write for us */	884	/* 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);	885	cctx->sptr = mmap (0, cctx->ssize, PROT_EXEC|PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, 0, 0);
605		886
606	if (cctx->sptr == (void *)-1)	887	if (cctx->sptr != (void *)-1)
607	{
608	perror ("FATAL: unable to mmap stack for coroutine");
609	_exit (EXIT_FAILURE);
610	}	888	{
611
612	# if STACKGUARD	889	# if CORO_STACKGUARD
613	mprotect (cctx->sptr, STACKGUARD * PAGESIZE, PROT_NONE);	890	mprotect (cctx->sptr, CORO_STACKGUARD * PAGESIZE, PROT_NONE);
614	# endif	891	# endif
		892	stack_start = CORO_STACKGUARD * PAGESIZE + (char *)cctx->sptr;
		893	stack_size = cctx->ssize - CORO_STACKGUARD * PAGESIZE;
		894	cctx->flags |= CC_MAPPED;
		895	}
		896	else
		897	#endif
		898	{
		899	cctx->ssize = coro_stacksize * (long)sizeof (long);
		900	New (0, cctx->sptr, coro_stacksize, long);
615		901
616	#else
617
618	cctx->ssize = STACKSIZE * (long)sizeof (long);
619	New (0, cctx->sptr, STACKSIZE, long);
620
621	if (!cctx->sptr)	902	if (!cctx->sptr)
622	{	903	{
623	perror ("FATAL: unable to malloc stack for coroutine");	904	perror ("FATAL: unable to allocate stack for coroutine");
624	_exit (EXIT_FAILURE);	905	_exit (EXIT_FAILURE);
625	}	906	}
626		907
627	#endif	908	stack_start = cctx->sptr;
		909	stack_size = cctx->ssize;
		910	}
628		911
629	#if USE_VALGRIND	912	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);	913	coro_create (&cctx->cctx, coro_run, (void *)cctx, stack_start, stack_size);
637		914
638	return cctx;	915	return cctx;
639	}	916	}
640		917
641	static void	918	static void
…		…
644	if (!cctx)	921	if (!cctx)
645	return;	922	return;
646		923
647	--cctx_count;	924	--cctx_count;
648		925
649	#if USE_VALGRIND	926	#if CORO_USE_VALGRIND
650	VALGRIND_STACK_DEREGISTER (cctx->valgrind_id);	927	VALGRIND_STACK_DEREGISTER (cctx->valgrind_id);
651	#endif	928	#endif
652		929
653	#if HAVE_MMAP	930	#if HAVE_MMAP
		931	if (cctx->flags & CC_MAPPED)
654	munmap (cctx->sptr, cctx->ssize);	932	munmap (cctx->sptr, cctx->ssize);
655	#else	933	else
		934	#endif
656	Safefree (cctx->sptr);	935	Safefree (cctx->sptr);
657	#endif
658		936
659	Safefree (cctx);	937	Safefree (cctx);
660	}	938	}
661		939
		940	/* wether this cctx should be destructed */
		941	#define CCTX_EXPIRED(cctx) ((cctx)->ssize < coro_stacksize || ((cctx)->flags & CC_NOREUSE))
		942
662	static coro_cctx *	943	static coro_cctx *
663	cctx_get ()	944	cctx_get (pTHX)
664	{	945	{
665	coro_cctx *cctx;	946	while (expect_true (cctx_first))
666
667	if (cctx_first)
668	{	947	{
669	cctx = cctx_first;	948	coro_cctx *cctx = cctx_first;
670	cctx_first = cctx->next;	949	cctx_first = cctx->next;
671	--cctx_idle;	950	--cctx_idle;
672	}	951
673	else	952	if (expect_true (!CCTX_EXPIRED (cctx)))
674	{	953	return cctx;
675	cctx = cctx_new ();	954
676	PL_op = PL_op->op_next;	955	cctx_destroy (cctx);
677	}	956	}
678		957
679	return cctx;	958	return cctx_new ();
680	}	959	}
681		960
682	static void	961	static void
683	cctx_put (coro_cctx *cctx)	962	cctx_put (coro_cctx *cctx)
684	{	963	{
685	/* free another cctx if overlimit */	964	/* free another cctx if overlimit */
686	if (cctx_idle >= MAX_IDLE_CCTX)	965	if (expect_false (cctx_idle >= MAX_IDLE_CCTX))
687	{	966	{
688	coro_cctx *first = cctx_first;	967	coro_cctx *first = cctx_first;
689	cctx_first = first->next;	968	cctx_first = first->next;
690	--cctx_idle;	969	--cctx_idle;
691		970
692	assert (!first->inuse);
693	cctx_destroy (first);	971	cctx_destroy (first);
694	}	972	}
695		973
696	++cctx_idle;	974	++cctx_idle;
697	cctx->next = cctx_first;	975	cctx->next = cctx_first;
698	cctx_first = cctx;	976	cctx_first = cctx;
699	}	977	}
700		978
701	/* never call directly, always through the coro_state_transfer global variable */	979	/** coroutine switching *****************************************************/
		980
		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 */
702	static void NOINLINE	1001	static void NOINLINE
703	transfer (struct coro *prev, struct coro *next)	1002	transfer (pTHX_ struct coro *prev, struct coro *next)
704	{	1003	{
705	dSTACKLEVEL;	1004	dSTACKLEVEL;
706		1005
707	/* sometimes transfer is only called to set idle_sp */	1006	/* sometimes transfer is only called to set idle_sp */
708	if (!next)	1007	if (expect_false (!next))
709	{	1008	{
710	((coro_cctx *)prev)->idle_sp = STACKLEVEL;	1009	((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 */	1010	assert (((coro_cctx *)prev)->idle_te = PL_top_env); /* just for the side-effect when asserts are enabled */
712	}	1011	}
713	else if (prev != next)	1012	else if (expect_true (prev != next))
714	{	1013	{
715	coro_cctx *prev__cctx;	1014	coro_cctx *prev__cctx;
716		1015
717	if (prev->flags & CF_NEW)	1016	if (expect_false (prev->flags & CF_NEW))
718	{	1017	{
719	/* create a new empty context */	1018	/* create a new empty context */
720	Newz (0, prev->cctx, 1, coro_cctx);	1019	Newz (0, prev->cctx, 1, coro_cctx);
721	prev->cctx->inuse = 1;
722	prev->flags &= ~CF_NEW;	1020	prev->flags &= ~CF_NEW;
723	prev->flags |= CF_RUNNING;	1021	prev->flags |= CF_RUNNING;
724	}	1022	}
725		1023
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
733	prev->flags &= ~CF_RUNNING;	1024	prev->flags &= ~CF_RUNNING;
734	next->flags |= CF_RUNNING;	1025	next->flags |= CF_RUNNING;
735		1026
736	LOCK;	1027	LOCK;
737		1028
738	if (next->flags & CF_NEW)	1029	if (expect_false (next->flags & CF_NEW))
739	{	1030	{
740	/* need to start coroutine */	1031	/* need to start coroutine */
741	next->flags &= ~CF_NEW;	1032	next->flags &= ~CF_NEW;
742	/* first get rid of the old state */	1033	/* first get rid of the old state */
743	save_perl (prev);	1034	save_perl (aTHX_ prev);
744	/* setup coroutine call */	1035	/* setup coroutine call */
745	setup_coro (next);	1036	coro_setup (aTHX_ next);
746	/* need a new stack */
747	assert (!next->cctx);
748	}	1037	}
749	else	1038	else
750	{	1039	{
751	/* coroutine already started */	1040	/* coroutine already started */
752	save_perl (prev);	1041	save_perl (aTHX_ prev);
753	load_perl (next);	1042	load_perl (aTHX_ next);
754	}	1043	}
755		1044
756	prev__cctx = prev->cctx;	1045	prev__cctx = prev->cctx;
757		1046
758	/* possibly "free" the cctx */	1047	/* possibly "free" the cctx */
759	if (prev__cctx->idle_sp == STACKLEVEL)	1048	if (expect_true (prev__cctx->idle_sp == STACKLEVEL && !(prev__cctx->flags & CC_TRACE)))
760	{	1049	{
761	/* 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 */
762	assert (PL_top_env == prev__cctx->top_env);	1051	assert (("ERROR: current top_env must equal previous top_env", PL_top_env == prev__cctx->idle_te));
763		1052
764	prev->cctx = 0;	1053	prev->cctx = 0;
765		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
766	cctx_put (prev__cctx);	1060	cctx_put (prev__cctx);
767	prev__cctx->inuse = 0;
768	}	1061	}
769		1062
		1063	++next->usecount;
		1064
770	if (!next->cctx)	1065	if (expect_true (!next->cctx))
771	{
772	next->cctx = cctx_get ();	1066	next->cctx = cctx_get (aTHX);
773	assert (!next->cctx->inuse);
774	next->cctx->inuse = 1;
775	}
776		1067
777	if (prev__cctx != next->cctx)	1068	if (expect_false (prev__cctx != next->cctx))
778	{	1069	{
779	prev__cctx->top_env = PL_top_env;	1070	prev__cctx->top_env = PL_top_env;
780	PL_top_env = next->cctx->top_env;	1071	PL_top_env = next->cctx->top_env;
781	coro_transfer (&prev__cctx->cctx, &next->cctx->cctx);	1072	coro_transfer (&prev__cctx->cctx, &next->cctx->cctx);
782	}	1073	}
783		1074
784	free_coro_mortal ();	1075	free_coro_mortal (aTHX);
785
786	UNLOCK;	1076	UNLOCK;
787	}	1077	}
788	}	1078	}
789		1079
790	struct transfer_args	1080	struct transfer_args
791	{	1081	{
792	struct coro *prev, *next;	1082	struct coro *prev, *next;
793	};	1083	};
794		1084
795	#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)
796		1087
		1088	/** high level stuff ********************************************************/
		1089
797	static void	1090	static int
798	coro_state_destroy (struct coro *coro)	1091	coro_state_destroy (pTHX_ struct coro *coro)
799	{	1092	{
800	if (coro->refcnt--)	1093	if (coro->flags & CF_DESTROYED)
801	return;	1094	return 0;
		1095
		1096	coro->flags |= CF_DESTROYED;
		1097
		1098	if (coro->flags & CF_READY)
		1099	{
		1100	/* reduce nready, as destroying a ready coro effectively unreadies it */
		1101	/* alternative: look through all ready queues and remove the coro */
		1102	LOCK;
		1103	--coro_nready;
		1104	UNLOCK;
		1105	}
		1106	else
		1107	coro->flags |= CF_READY; /* make sure it is NOT put into the readyqueue */
802		1108
803	if (coro->mainstack && coro->mainstack != main_mainstack)	1109	if (coro->mainstack && coro->mainstack != main_mainstack)
804	{	1110	{
805	struct coro temp;	1111	struct coro temp;
806	Zero (&temp, 1, struct coro);
807	temp.save = CORO_SAVE_ALL;
808		1112
809	if (coro->flags & CF_RUNNING)	1113	if (coro->flags & CF_RUNNING)
810	croak ("FATAL: tried to destroy currently running coroutine");	1114	croak ("FATAL: tried to destroy currently running coroutine");
811		1115
812	save_perl (&temp);	1116	save_perl (aTHX_ &temp);
813	load_perl (coro);	1117	load_perl (aTHX_ coro);
814		1118
815	coro_destroy_stacks ();	1119	coro_destroy (aTHX_ coro);
816		1120
817	load_perl (&temp); /* this will get rid of defsv etc.. */	1121	load_perl (aTHX_ &temp); /* this will get rid of defsv etc.. */
818		1122
819	coro->mainstack = 0;	1123	coro->mainstack = 0;
820	}	1124	}
821		1125
822	cctx_destroy (coro->cctx);	1126	cctx_destroy (coro->cctx);
823	SvREFCNT_dec (coro->args);	1127	SvREFCNT_dec (coro->args);
824	Safefree (coro);	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
		1133	return 1;
825	}	1134	}
826		1135
827	static int	1136	static int
828	coro_state_clear (pTHX_ SV *sv, MAGIC *mg)	1137	coro_state_free (pTHX_ SV *sv, MAGIC *mg)
829	{	1138	{
830	struct coro *coro = (struct coro *)mg->mg_ptr;	1139	struct coro *coro = (struct coro *)mg->mg_ptr;
831	mg->mg_ptr = 0;	1140	mg->mg_ptr = 0;
832		1141
		1142	coro->hv = 0;
		1143
		1144	if (--coro->refcnt < 0)
		1145	{
833	coro_state_destroy (coro);	1146	coro_state_destroy (aTHX_ coro);
		1147	Safefree (coro);
		1148	}
834		1149
835	return 0;	1150	return 0;
836	}	1151	}
837		1152
838	static int	1153	static int
…		…
845	return 0;	1160	return 0;
846	}	1161	}
847		1162
848	static MGVTBL coro_state_vtbl = {	1163	static MGVTBL coro_state_vtbl = {
849	0, 0, 0, 0,	1164	0, 0, 0, 0,
850	coro_state_clear,	1165	coro_state_free,
851	0,	1166	0,
852	#ifdef MGf_DUP	1167	#ifdef MGf_DUP
853	coro_state_dup,	1168	coro_state_dup,
854	#else	1169	#else
855	# define MGf_DUP 0	1170	# define MGf_DUP 0
856	#endif	1171	#endif
857	};	1172	};
858		1173
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	1174	static void
882	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)
883	{	1176	{
884	ta->prev = SvSTATE (prev_sv);	1177	ta->prev = SvSTATE (prev_sv);
885	ta->next = SvSTATE (next_sv);	1178	ta->next = SvSTATE (next_sv);
		1179	TRANSFER_CHECK (*ta);
886	}	1180	}
887		1181
888	static void	1182	static void
889	api_transfer (SV *prev_sv, SV *next_sv)	1183	api_transfer (SV *prev_sv, SV *next_sv)
890	{	1184	{
		1185	dTHX;
891	struct transfer_args ta;	1186	struct transfer_args ta;
892		1187
893	prepare_transfer (&ta, prev_sv, next_sv);	1188	prepare_transfer (aTHX_ &ta, prev_sv, next_sv);
894	TRANSFER (ta);	1189	TRANSFER (ta);
895	}	1190	}
896		1191
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 ********************************************************************/	1192	/** Coro ********************************************************************/
910		1193
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	1194	static void
924	coro_enq (SV *coro_sv)	1195	coro_enq (pTHX_ SV *coro_sv)
925	{	1196	{
926	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);
927	coro_nready++;
928	}	1198	}
929		1199
930	static SV *	1200	static SV *
931	coro_deq (int min_prio)	1201	coro_deq (pTHX_ int min_prio)
932	{	1202	{
933	int prio = PRIO_MAX - PRIO_MIN;	1203	int prio = PRIO_MAX - PRIO_MIN;
934		1204
935	min_prio -= PRIO_MIN;	1205	min_prio -= PRIO_MIN;
936	if (min_prio < 0)	1206	if (min_prio < 0)
937	min_prio = 0;	1207	min_prio = 0;
938		1208
939	for (prio = PRIO_MAX - PRIO_MIN + 1; --prio >= min_prio; )	1209	for (prio = PRIO_MAX - PRIO_MIN + 1; --prio >= min_prio; )
940	if (AvFILLp (coro_ready [prio]) >= 0)	1210	if (AvFILLp (coro_ready [prio]) >= 0)
941	{
942	coro_nready--;
943	return av_shift (coro_ready [prio]);	1211	return av_shift (coro_ready [prio]);
944	}
945		1212
946	return 0;	1213	return 0;
947	}	1214	}
948		1215
949	static int	1216	static int
950	api_ready (SV *coro_sv)	1217	api_ready (SV *coro_sv)
951	{	1218	{
		1219	dTHX;
952	struct coro *coro;	1220	struct coro *coro;
953		1221
954	if (SvROK (coro_sv))	1222	if (SvROK (coro_sv))
955	coro_sv = SvRV (coro_sv);	1223	coro_sv = SvRV (coro_sv);
956		1224
…		…
960	return 0;	1228	return 0;
961		1229
962	coro->flags |= CF_READY;	1230	coro->flags |= CF_READY;
963		1231
964	LOCK;	1232	LOCK;
965	coro_enq (SvREFCNT_inc (coro_sv));	1233	coro_enq (aTHX_ SvREFCNT_inc (coro_sv));
		1234	++coro_nready;
966	UNLOCK;	1235	UNLOCK;
967		1236
968	return 1;	1237	return 1;
969	}	1238	}
970		1239
971	static int	1240	static int
972	api_is_ready (SV *coro_sv)	1241	api_is_ready (SV *coro_sv)
973	{	1242	{
		1243	dTHX;
974	return !!(SvSTATE (coro_sv)->flags & CF_READY);	1244	return !!(SvSTATE (coro_sv)->flags & CF_READY);
975	}	1245	}
976		1246
977	static void	1247	static void
978	prepare_schedule (struct transfer_args *ta)	1248	prepare_schedule (pTHX_ struct transfer_args *ta)
979	{	1249	{
980	SV *prev, *next;	1250	SV *prev_sv, *next_sv;
981		1251
982	for (;;)	1252	for (;;)
983	{	1253	{
984	LOCK;	1254	LOCK;
985	next = coro_deq (PRIO_MIN);	1255	next_sv = coro_deq (aTHX_ PRIO_MIN);
		1256
		1257	/* nothing to schedule: call the idle handler */
		1258	if (expect_false (!next_sv))
		1259	{
		1260	dSP;
		1261	UNLOCK;
		1262
		1263	ENTER;
		1264	SAVETMPS;
		1265
		1266	PUSHMARK (SP);
		1267	PUTBACK;
		1268	call_sv (get_sv ("Coro::idle", FALSE), G_DISCARD);
		1269
		1270	FREETMPS;
		1271	LEAVE;
		1272	continue;
		1273	}
		1274
		1275	ta->next = SvSTATE (next_sv);
		1276
		1277	/* cannot transfer to destroyed coros, skip and look for next */
		1278	if (expect_false (ta->next->flags & CF_DESTROYED))
		1279	{
		1280	UNLOCK;
		1281	SvREFCNT_dec (next_sv);
		1282	/* coro_nready is already taken care of by destroy */
		1283	continue;
		1284	}
		1285
		1286	--coro_nready;
986	UNLOCK;	1287	UNLOCK;
987
988	if (next)
989	break;	1288	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	}	1289	}
1004	}
1005
1006	prev = SvRV (coro_current);
1007	SvRV_set (coro_current, next);
1008		1290
1009	/* free this only after the transfer */	1291	/* free this only after the transfer */
1010	LOCK;	1292	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);	1293	ta->prev = SvSTATE (prev_sv);
1019	ta->next = SvSTATE (next);	1294	TRANSFER_CHECK (*ta);
1020
1021	assert (ta->next->flags & CF_READY);	1295	assert (ta->next->flags & CF_READY);
1022	ta->next->flags &= ~CF_READY;	1296	ta->next->flags &= ~CF_READY;
1023	}	1297	SvRV_set (coro_current, next_sv);
1024		1298
		1299	LOCK;
		1300	free_coro_mortal (aTHX);
		1301	coro_mortal = prev_sv;
		1302	UNLOCK;
		1303	}
		1304
1025	static void	1305	static void
1026	prepare_cede (struct transfer_args *ta)	1306	prepare_cede (pTHX_ struct transfer_args *ta)
1027	{	1307	{
1028	api_ready (coro_current);	1308	api_ready (coro_current);
1029
1030	prepare_schedule (ta);	1309	prepare_schedule (aTHX_ ta);
		1310	}
		1311
		1312	static int
		1313	prepare_cede_notself (pTHX_ struct transfer_args *ta)
		1314	{
		1315	if (coro_nready)
		1316	{
		1317	SV *prev = SvRV (coro_current);
		1318	prepare_schedule (aTHX_ ta);
		1319	api_ready (prev);
		1320	return 1;
		1321	}
		1322	else
		1323	return 0;
1031	}	1324	}
1032		1325
1033	static void	1326	static void
1034	api_schedule (void)	1327	api_schedule (void)
1035	{	1328	{
		1329	dTHX;
1036	struct transfer_args ta;	1330	struct transfer_args ta;
1037		1331
1038	prepare_schedule (&ta);	1332	prepare_schedule (aTHX_ &ta);
1039	TRANSFER (ta);	1333	TRANSFER (ta);
1040	}	1334	}
1041		1335
1042	static void	1336	static int
1043	api_cede (void)	1337	api_cede (void)
1044	{	1338	{
		1339	dTHX;
1045	struct transfer_args ta;	1340	struct transfer_args ta;
1046		1341
1047	prepare_cede (&ta);	1342	prepare_cede (aTHX_ &ta);
		1343
		1344	if (expect_true (ta.prev != ta.next))
		1345	{
1048	TRANSFER (ta);	1346	TRANSFER (ta);
		1347	return 1;
		1348	}
		1349	else
		1350	return 0;
1049	}	1351	}
1050		1352
		1353	static int
		1354	api_cede_notself (void)
		1355	{
		1356	dTHX;
		1357	struct transfer_args ta;
		1358
		1359	if (prepare_cede_notself (aTHX_ &ta))
		1360	{
		1361	TRANSFER (ta);
		1362	return 1;
		1363	}
		1364	else
		1365	return 0;
		1366	}
		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
1051	MODULE = Coro::State PACKAGE = Coro::State	1394	MODULE = Coro::State PACKAGE = Coro::State PREFIX = api_
1052		1395
1053	PROTOTYPES: DISABLE	1396	PROTOTYPES: DISABLE
1054		1397
1055	BOOT:	1398	BOOT:
1056	{	1399	{
1057	#ifdef USE_ITHREADS	1400	#ifdef USE_ITHREADS
1058	MUTEX_INIT (&coro_mutex);	1401	MUTEX_INIT (&coro_mutex);
1059	#endif	1402	#endif
1060	BOOT_PAGESIZE;	1403	BOOT_PAGESIZE;
1061		1404
		1405	irsgv = gv_fetchpv ("/" , GV_ADD|GV_NOTQUAL, SVt_PV);
		1406	stdoutgv = gv_fetchpv ("STDOUT", GV_ADD|GV_NOTQUAL, SVt_PVIO);
		1407
1062	coro_state_stash = gv_stashpv ("Coro::State", TRUE);	1408	coro_state_stash = gv_stashpv ("Coro::State", TRUE);
1063		1409
		1410	newCONSTSUB (coro_state_stash, "CC_TRACE" , newSViv (CC_TRACE));
		1411	newCONSTSUB (coro_state_stash, "CC_TRACE_SUB" , newSViv (CC_TRACE_SUB));
1064	newCONSTSUB (coro_state_stash, "SAVE_DEFAV", newSViv (CORO_SAVE_DEFAV));	1412	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));	1413	newCONSTSUB (coro_state_stash, "CC_TRACE_ALL" , newSViv (CC_TRACE_ALL));
1069		1414
1070	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;
1071		1420
1072	coroapi.ver = CORO_API_VERSION;	1421	coroapi.ver = CORO_API_VERSION;
1073	coroapi.transfer = api_transfer;	1422	coroapi.transfer = api_transfer;
1074		1423
1075	assert (("PRIO_NORMAL must be 0", !PRIO_NORMAL));	1424	assert (("PRIO_NORMAL must be 0", !PRIO_NORMAL));
…		…
1082	struct coro *coro;	1431	struct coro *coro;
1083	HV *hv;	1432	HV *hv;
1084	int i;	1433	int i;
1085		1434
1086	Newz (0, coro, 1, struct coro);	1435	Newz (0, coro, 1, struct coro);
1087	coro->args = newAV ();	1436	coro->args = newAV ();
1088	coro->save = CORO_SAVE_ALL;
1089	coro->flags = CF_NEW;	1437	coro->flags = CF_NEW;
1090		1438
		1439	if (coro_first) coro_first->prev = coro;
		1440	coro->next = coro_first;
		1441	coro_first = coro;
		1442
1091	hv = newHV ();	1443	coro->hv = hv = newHV ();
1092	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;
1093	RETVAL = sv_bless (newRV_noinc ((SV *)hv), gv_stashpv (klass, 1));	1445	RETVAL = sv_bless (newRV_noinc ((SV *)hv), gv_stashpv (klass, 1));
1094		1446
		1447	av_extend (coro->args, items - 1);
1095	for (i = 1; i < items; i++)	1448	for (i = 1; i < items; i++)
1096	av_push (coro->args, newSVsv (ST (i)));	1449	av_push (coro->args, newSVsv (ST (i)));
1097	}	1450	}
1098	OUTPUT:	1451	OUTPUT:
1099	RETVAL	1452	RETVAL
1100		1453
1101	int	1454	# these not obviously related functions are all rolled into the same xs
1102	save (SV *coro, int new_save = -1)	1455	# function to increase chances that they all will call transfer with the same
1103	CODE:	1456	# stack offset
1104	RETVAL = api_save (coro, new_save);
1105	OUTPUT:
1106	RETVAL
1107
1108	void	1457	void
1109	_set_stacklevel (...)	1458	_set_stacklevel (...)
1110	ALIAS:	1459	ALIAS:
1111	Coro::State::transfer = 1	1460	Coro::State::transfer = 1
1112	Coro::schedule = 2	1461	Coro::schedule = 2
1113	Coro::cede = 3	1462	Coro::cede = 3
		1463	Coro::cede_notself = 4
1114	CODE:	1464	CODE:
1115	{	1465	{
1116	struct transfer_args ta;	1466	struct transfer_args ta;
1117		1467
1118	switch (ix)	1468	switch (ix)
…		…
1124		1474
1125	case 1:	1475	case 1:
1126	if (items != 2)	1476	if (items != 2)
1127	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);
1128		1478
1129	prepare_transfer (&ta, ST (0), ST (1));	1479	prepare_transfer (aTHX_ &ta, ST (0), ST (1));
1130	break;	1480	break;
1131		1481
1132	case 2:	1482	case 2:
1133	prepare_schedule (&ta);	1483	prepare_schedule (aTHX_ &ta);
1134	break;	1484	break;
1135		1485
1136	case 3:	1486	case 3:
1137	prepare_cede (&ta);	1487	prepare_cede (aTHX_ &ta);
		1488	break;
		1489
		1490	case 4:
		1491	if (!prepare_cede_notself (aTHX_ &ta))
		1492	XSRETURN_EMPTY;
		1493
1138	break;	1494	break;
1139	}	1495	}
1140		1496
		1497	BARRIER;
1141	TRANSFER (ta);	1498	TRANSFER (ta);
1142	}
1143		1499
1144	void	1500	if (expect_false (GIMME_V != G_VOID && ta.next != ta.prev))
1145	_clone_state_from (SV *dst, SV *src)	1501	XSRETURN_YES;
		1502	}
		1503
		1504	bool
		1505	_destroy (SV *coro_sv)
1146	CODE:	1506	CODE:
1147	{	1507	RETVAL = coro_state_destroy (aTHX_ SvSTATE (coro_sv));
1148	struct coro *coro_src = SvSTATE (src);	1508	OUTPUT:
1149		1509	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		1510
1156	void	1511	void
1157	_exit (code)	1512	_exit (code)
1158	int code	1513	int code
1159	PROTOTYPE: $	1514	PROTOTYPE: $
1160	CODE:	1515	CODE:
1161	_exit (code);	1516	_exit (code);
1162		1517
1163	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
1164	cctx_count ()	1528	cctx_count ()
1165	CODE:	1529	CODE:
1166	RETVAL = cctx_count;	1530	RETVAL = cctx_count;
1167	OUTPUT:	1531	OUTPUT:
1168	RETVAL	1532	RETVAL
…		…
1172	CODE:	1536	CODE:
1173	RETVAL = cctx_idle;	1537	RETVAL = cctx_idle;
1174	OUTPUT:	1538	OUTPUT:
1175	RETVAL	1539	RETVAL
1176		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
1177	MODULE = Coro::State PACKAGE = Coro	1639	MODULE = Coro::State PACKAGE = Coro
1178		1640
1179	BOOT:	1641	BOOT:
1180	{	1642	{
1181	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);
1182		1651
1183	coro_stash = gv_stashpv ("Coro", TRUE);	1652	coro_stash = gv_stashpv ("Coro", TRUE);
1184		1653
1185	newCONSTSUB (coro_stash, "PRIO_MAX", newSViv (PRIO_MAX));	1654	newCONSTSUB (coro_stash, "PRIO_MAX", newSViv (PRIO_MAX));
1186	newCONSTSUB (coro_stash, "PRIO_HIGH", newSViv (PRIO_HIGH));	1655	newCONSTSUB (coro_stash, "PRIO_HIGH", newSViv (PRIO_HIGH));
1187	newCONSTSUB (coro_stash, "PRIO_NORMAL", newSViv (PRIO_NORMAL));	1656	newCONSTSUB (coro_stash, "PRIO_NORMAL", newSViv (PRIO_NORMAL));
1188	newCONSTSUB (coro_stash, "PRIO_LOW", newSViv (PRIO_LOW));	1657	newCONSTSUB (coro_stash, "PRIO_LOW", newSViv (PRIO_LOW));
1189	newCONSTSUB (coro_stash, "PRIO_IDLE", newSViv (PRIO_IDLE));	1658	newCONSTSUB (coro_stash, "PRIO_IDLE", newSViv (PRIO_IDLE));
1190	newCONSTSUB (coro_stash, "PRIO_MIN", newSViv (PRIO_MIN));	1659	newCONSTSUB (coro_stash, "PRIO_MIN", newSViv (PRIO_MIN));
1191		1660
1192	coro_current = get_sv ("Coro::current", FALSE);
1193	SvREADONLY_on (coro_current);
1194
1195	for (i = PRIO_MAX - PRIO_MIN + 1; i--; )	1661	for (i = PRIO_MAX - PRIO_MIN + 1; i--; )
1196	coro_ready[i] = newAV ();	1662	coro_ready[i] = newAV ();
1197		1663
1198	{	1664	{
1199	SV *sv = perl_get_sv("Coro::API", 1);	1665	SV *sv = perl_get_sv("Coro::API", 1);
1200		1666
1201	coroapi.schedule = api_schedule;	1667	coroapi.schedule = api_schedule;
1202	coroapi.save = api_save;
1203	coroapi.cede = api_cede;	1668	coroapi.cede = api_cede;
		1669	coroapi.cede_notself = api_cede_notself;
1204	coroapi.ready = api_ready;	1670	coroapi.ready = api_ready;
1205	coroapi.is_ready = api_is_ready;	1671	coroapi.is_ready = api_is_ready;
1206	coroapi.nready = &coro_nready;	1672	coroapi.nready = &coro_nready;
1207	coroapi.current = coro_current;	1673	coroapi.current = coro_current;
1208		1674
1209	GCoroAPI = &coroapi;	1675	GCoroAPI = &coroapi;
1210	sv_setiv (sv, (IV)&coroapi);	1676	sv_setiv (sv, (IV)&coroapi);
1211	SvREADONLY_on (sv);	1677	SvREADONLY_on (sv);
1212	}	1678	}
…		…
1247	CODE:	1713	CODE:
1248	RETVAL = boolSV (api_ready (self));	1714	RETVAL = boolSV (api_ready (self));
1249	OUTPUT:	1715	OUTPUT:
1250	RETVAL	1716	RETVAL
1251		1717
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	1718	int
1261	nready (...)	1719	nready (...)
1262	PROTOTYPE:	1720	PROTOTYPE:
1263	CODE:	1721	CODE:
1264	RETVAL = coro_nready;	1722	RETVAL = coro_nready;
1265	OUTPUT:	1723	OUTPUT:
1266	RETVAL	1724	RETVAL
1267		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
1268	MODULE = Coro::State PACKAGE = Coro::AIO	1790	MODULE = Coro::State PACKAGE = Coro::AIO
1269		1791
1270	SV *	1792	SV *
1271	_get_state ()	1793	_get_state ()
1272	CODE:	1794	CODE:

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