ViewVC Help

View File | Revision Log | Show Annotations | Download File

/cvs/Coro/Coro/State.xs

Comparing Coro/Coro/State.xs (file contents):
Revision 1.112 by root, Thu Nov 30 20:52:52 2006 UTC vs.
Revision 1.191 by root, Fri Oct 5 20:47:49 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
7	#include "patchlevel.h"	9	#include "patchlevel.h"
8		10
9	#if USE_VALGRIND
10	# include <valgrind/valgrind.h>
11	#endif
12
13	#define PERL_VERSION_ATLEAST(a,b,c) \
14	(PERL_REVISION > (a) \
15	|| (PERL_REVISION == (a) \
16	&& (PERL_VERSION > (b) \
17	|| (PERL_VERSION == (b) && PERLSUBVERSION >= (c)))))
18
19	#if !PERL_VERSION_ATLEAST (5,6,0)
20	# ifndef PL_ppaddr
21	# define PL_ppaddr ppaddr
22	# endif
23	# ifndef call_sv
24	# define call_sv perl_call_sv
25	# endif
26	# ifndef get_sv
27	# define get_sv perl_get_sv
28	# endif
29	# ifndef get_cv
30	# define get_cv perl_get_cv
31	# endif
32	# ifndef IS_PADGV
33	# define IS_PADGV(v) 0
34	# endif
35	# ifndef IS_PADCONST
36	# define IS_PADCONST(v) 0
37	# endif
38	#endif
39
40	#include <stdio.h>	11	#include <stdio.h>
41	#include <errno.h>	12	#include <errno.h>
42		13	#include <assert.h>
43	#if !__i386 && !__x86_64 && !__powerpc && !__m68k && !__alpha && !__mips && !__sparc64
44	# undef STACKGUARD
45	#endif
46
47	#ifndef STACKGUARD
48	# define STACKGUARD 0
49	#endif
50		14
51	#ifdef HAVE_MMAP	15	#ifdef HAVE_MMAP
52	# include <unistd.h>	16	# include <unistd.h>
53	# include <sys/mman.h>	17	# include <sys/mman.h>
54	# ifndef MAP_ANONYMOUS	18	# ifndef MAP_ANONYMOUS
…		…
69	#else	33	#else
70	# define PAGESIZE 0	34	# define PAGESIZE 0
71	# define BOOT_PAGESIZE (void)0	35	# define BOOT_PAGESIZE (void)0
72	#endif	36	#endif
73		37
74	/* The next macro should declare a variable stacklevel that contains and approximation	38	#if CORO_USE_VALGRIND
75	* to the current C stack pointer. Its property is that it changes with each call	39	# include <valgrind/valgrind.h>
76	* and should be unique. */	40	# define REGISTER_STACK(cctx,start,end) (cctx)->valgrind_id = VALGRIND_STACK_REGISTER ((start), (end))
		41	#else
		42	# define REGISTER_STACK(cctx,start,end)
		43	#endif
		44
		45	/* the maximum number of idle cctx that will be pooled */
		46	#define MAX_IDLE_CCTX 8
		47
		48	#define PERL_VERSION_ATLEAST(a,b,c) \
		49	(PERL_REVISION > (a) \
		50	|| (PERL_REVISION == (a) \
		51	&& (PERL_VERSION > (b) \
		52	|| (PERL_VERSION == (b) && PERLSUBVERSION >= (c)))))
		53
		54	#if !PERL_VERSION_ATLEAST (5,6,0)
		55	# ifndef PL_ppaddr
		56	# define PL_ppaddr ppaddr
		57	# endif
		58	# ifndef call_sv
		59	# define call_sv perl_call_sv
		60	# endif
		61	# ifndef get_sv
		62	# define get_sv perl_get_sv
		63	# endif
		64	# ifndef get_cv
		65	# define get_cv perl_get_cv
		66	# endif
		67	# ifndef IS_PADGV
		68	# define IS_PADGV(v) 0
		69	# endif
		70	# ifndef IS_PADCONST
		71	# define IS_PADCONST(v) 0
		72	# endif
		73	#endif
		74
		75	/* 5.8.7 */
		76	#ifndef SvRV_set
		77	# define SvRV_set(s,v) SvRV(s) = (v)
		78	#endif
		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
		88	#if !__i386 && !__x86_64 && !__powerpc && !__m68k && !__alpha && !__mips && !__sparc64
		89	# undef CORO_STACKGUARD
		90	#endif
		91
		92	#ifndef CORO_STACKGUARD
		93	# define CORO_STACKGUARD 0
		94	#endif
		95
		96	/* prefer perl internal functions over our own? */
		97	#ifndef CORO_PREFER_PERL_FUNCTIONS
		98	# define CORO_PREFER_PERL_FUNCTIONS 0
		99	#endif
		100
		101	/* The next macros try to return the current stack pointer, in an as
		102	* portable way as possible. */
77	#define dSTACKLEVEL int stacklevel	103	#define dSTACKLEVEL volatile char stacklevel
78	#define STACKLEVEL ((void *)&stacklevel)	104	#define STACKLEVEL ((void *)&stacklevel)
79		105
80	#define IN_DESTRUCT (PL_main_cv == Nullcv)	106	#define IN_DESTRUCT (PL_main_cv == Nullcv)
81		107
82	#if __GNUC__ >= 3	108	#if __GNUC__ >= 3
83	# define attribute(x) __attribute__(x)	109	# define attribute(x) __attribute__(x)
		110	# define BARRIER __asm__ __volatile__ ("" : : : "memory")
84	#else	111	#else
85	# define attribute(x)	112	# define attribute(x)
		113	# define BARRIER
86	#endif	114	#endif
87		115
88	#define NOINLINE attribute ((noinline))	116	#define NOINLINE attribute ((noinline))
89		117
90	#include "CoroAPI.h"	118	#include "CoroAPI.h"
91
92	#define TRANSFER_SET_STACKLEVEL 0x8bfbfbfb /* magic cookie */
93		119
94	#ifdef USE_ITHREADS	120	#ifdef USE_ITHREADS
95	static perl_mutex coro_mutex;	121	static perl_mutex coro_mutex;
96	# define LOCK do { MUTEX_LOCK (&coro_mutex); } while (0)	122	# define LOCK do { MUTEX_LOCK (&coro_mutex); } while (0)
97	# define UNLOCK do { MUTEX_UNLOCK (&coro_mutex); } while (0)	123	# define UNLOCK do { MUTEX_UNLOCK (&coro_mutex); } while (0)
98	#else	124	#else
99	# define LOCK (void)0	125	# define LOCK (void)0
100	# define UNLOCK (void)0	126	# define UNLOCK (void)0
101	#endif	127	#endif
102		128
		129	/* helper storage struct for Coro::AIO */
		130	struct io_state
		131	{
		132	int errorno;
		133	I32 laststype;
		134	int laststatval;
		135	Stat_t statcache;
		136	};
		137
		138	static size_t coro_stacksize = CORO_STACKSIZE;
103	static struct CoroAPI coroapi;	139	static struct CoroAPI coroapi;
104	static AV *main_mainstack; /* used to differentiate between $main and others */	140	static AV *main_mainstack; /* used to differentiate between $main and others */
		141	static JMPENV *main_top_env;
105	static HV *coro_state_stash, *coro_stash;	142	static HV *coro_state_stash, *coro_stash;
106	static SV *coro_mortal; /* will be freed after next transfer */	143	static SV *coro_mortal; /* will be freed after next transfer */
107		144
		145	static GV *irsgv; /* $/ */
		146	static GV *stdoutgv; /* *STDOUT */
		147
		148	/* async_pool helper stuff */
		149	static SV *sv_pool_rss;
		150	static SV *sv_pool_size;
		151	static AV *av_async_pool;
		152
108	static struct coro_cctx *cctx_first;	153	static struct coro_cctx *cctx_first;
109	static int cctx_count, cctx_idle;	154	static int cctx_count, cctx_idle;
		155
		156	enum {
		157	CC_MAPPED = 0x01,
		158	CC_NOREUSE = 0x02, /* throw this away after tracing */
		159	CC_TRACE = 0x04,
		160	CC_TRACE_SUB = 0x08, /* trace sub calls */
		161	CC_TRACE_LINE = 0x10, /* trace each statement */
		162	CC_TRACE_ALL = CC_TRACE_SUB | CC_TRACE_LINE,
		163	};
110		164
111	/* this is a structure representing a c-level coroutine */	165	/* this is a structure representing a c-level coroutine */
112	typedef struct coro_cctx {	166	typedef struct coro_cctx {
113	struct coro_cctx *next;	167	struct coro_cctx *next;
114		168
115	/* the stack */	169	/* the stack */
116	void *sptr;	170	void *sptr;
117	long ssize; /* positive == mmap, otherwise malloc */	171	size_t ssize;
118		172
119	/* cpu state */	173	/* cpu state */
120	void *idle_sp; /* sp of top-level transfer/schedule/cede call */	174	void *idle_sp; /* sp of top-level transfer/schedule/cede call */
		175	JMPENV *idle_te; /* same as idle_sp, but for top_env, TODO: remove once stable */
121	JMPENV *top_env;	176	JMPENV *top_env;
122	coro_context cctx;	177	coro_context cctx;
123		178
124	int inuse;
125
126	#if USE_VALGRIND	179	#if CORO_USE_VALGRIND
127	int valgrind_id;	180	int valgrind_id;
128	#endif	181	#endif
		182	unsigned char flags;
129	} coro_cctx;	183	} coro_cctx;
130		184
131	enum {	185	enum {
132	CF_RUNNING, /* coroutine is running */	186	CF_RUNNING = 0x0001, /* coroutine is running */
133	CF_READY, /* coroutine is ready */	187	CF_READY = 0x0002, /* coroutine is ready */
		188	CF_NEW = 0x0004, /* has never been switched to */
		189	CF_DESTROYED = 0x0008, /* coroutine data has been freed */
134	};	190	};
135		191
136	/* this is a structure representing a perl-level coroutine */	192	/* this is a structure representing a perl-level coroutine */
137	struct coro {	193	struct coro {
138	/* the c coroutine allocated to this perl coroutine, if any */	194	/* the c coroutine allocated to this perl coroutine, if any */
139	coro_cctx *cctx;	195	coro_cctx *cctx;
140		196
141	/* data associated with this coroutine (initial args) */	197	/* data associated with this coroutine (initial args) */
142	AV *args;	198	AV *args;
143	int refcnt;	199	int refcnt;
144	int flags;	200	int flags; /* CF_ flags */
145		201
146	/* optionally saved, might be zero */	202	/* optionally saved, might be zero */
147	AV *defav;	203	AV *defav; /* @_ */
148	SV *defsv;	204	SV *defsv; /* $_ */
149	SV *errsv;	205	SV *errsv; /* $@ */
		206	SV *deffh; /* default filehandle */
		207	SV *irssv; /* $/ */
		208	SV *irssv_sv; /* real $/ cache */
150		209
151	#define VAR(name,type) type name;	210	#define VAR(name,type) type name;
152	# include "state.h"	211	# include "state.h"
153	#undef VAR	212	#undef VAR
154		213
		214	/* statistics */
		215	int usecount; /* number of transfers to this coro */
		216
155	/* coro process data */	217	/* coro process data */
156	int prio;	218	int prio;
		219	//SV *throw;
		220
		221	/* async_pool */
		222	SV *saved_deffh;
		223
		224	/* linked list */
		225	struct coro *next, *prev;
		226	HV *hv; /* the perl hash associated with this coro, if any */
157	};	227	};
158		228
159	typedef struct coro *Coro__State;	229	typedef struct coro *Coro__State;
160	typedef struct coro *Coro__State_or_hashref;	230	typedef struct coro *Coro__State_or_hashref;
161		231
		232	/** Coro ********************************************************************/
		233
		234	#define PRIO_MAX 3
		235	#define PRIO_HIGH 1
		236	#define PRIO_NORMAL 0
		237	#define PRIO_LOW -1
		238	#define PRIO_IDLE -3
		239	#define PRIO_MIN -4
		240
		241	/* for Coro.pm */
		242	static SV *coro_current;
		243	static AV *coro_ready [PRIO_MAX-PRIO_MIN+1];
		244	static int coro_nready;
		245	static struct coro *coro_first;
		246
		247	/** lowlevel stuff **********************************************************/
		248
162	static AV *	249	static AV *
163	coro_clone_padlist (CV *cv)	250	coro_clone_padlist (pTHX_ CV *cv)
164	{	251	{
165	AV *padlist = CvPADLIST (cv);	252	AV *padlist = CvPADLIST (cv);
166	AV *newpadlist, *newpad;	253	AV *newpadlist, *newpad;
167		254
168	newpadlist = newAV ();	255	newpadlist = newAV ();
…		…
180		267
181	return newpadlist;	268	return newpadlist;
182	}	269	}
183		270
184	static void	271	static void
185	free_padlist (AV *padlist)	272	free_padlist (pTHX_ AV *padlist)
186	{	273	{
187	/* may be during global destruction */	274	/* may be during global destruction */
188	if (SvREFCNT (padlist))	275	if (SvREFCNT (padlist))
189	{	276	{
190	I32 i = AvFILLp (padlist);	277	I32 i = AvFILLp (padlist);
…		…
211	AV *padlist;	298	AV *padlist;
212	AV *av = (AV *)mg->mg_obj;	299	AV *av = (AV *)mg->mg_obj;
213		300
214	/* casting is fun. */	301	/* casting is fun. */
215	while (&PL_sv_undef != (SV *)(padlist = (AV *)av_pop (av)))	302	while (&PL_sv_undef != (SV *)(padlist = (AV *)av_pop (av)))
216	free_padlist (padlist);	303	free_padlist (aTHX_ padlist);
217		304
218	SvREFCNT_dec (av);	305	SvREFCNT_dec (av);
219		306
220	return 0;	307	return 0;
221	}	308	}
…		…
229	? SvMAGIC (cv)->mg_type == PERL_MAGIC_coro \	316	? SvMAGIC (cv)->mg_type == PERL_MAGIC_coro \
230	? SvMAGIC (cv) \	317	? SvMAGIC (cv) \
231	: mg_find ((SV *)cv, PERL_MAGIC_coro) \	318	: mg_find ((SV *)cv, PERL_MAGIC_coro) \
232	: 0	319	: 0
233		320
		321	static struct coro *
		322	SvSTATE_ (pTHX_ SV *coro)
		323	{
		324	HV *stash;
		325	MAGIC *mg;
		326
		327	if (SvROK (coro))
		328	coro = SvRV (coro);
		329
		330	if (SvTYPE (coro) != SVt_PVHV)
		331	croak ("Coro::State object required");
		332
		333	stash = SvSTASH (coro);
		334	if (stash != coro_stash && stash != coro_state_stash)
		335	{
		336	/* very slow, but rare, check */
		337	if (!sv_derived_from (sv_2mortal (newRV_inc (coro)), "Coro::State"))
		338	croak ("Coro::State object required");
		339	}
		340
		341	mg = CORO_MAGIC (coro);
		342	return (struct coro *)mg->mg_ptr;
		343	}
		344
		345	#define SvSTATE(sv) SvSTATE_ (aTHX_ (sv))
		346
234	/* the next two functions merely cache the padlists */	347	/* the next two functions merely cache the padlists */
235	static void	348	static void
236	get_padlist (CV *cv)	349	get_padlist (pTHX_ CV *cv)
237	{	350	{
238	MAGIC *mg = CORO_MAGIC (cv);	351	MAGIC *mg = CORO_MAGIC (cv);
239	AV *av;	352	AV *av;
240		353
241	if (mg && AvFILLp ((av = (AV *)mg->mg_obj)) >= 0)	354	if (mg && AvFILLp ((av = (AV *)mg->mg_obj)) >= 0)
242	CvPADLIST (cv) = (AV *)AvARRAY (av)[AvFILLp (av)--];	355	CvPADLIST (cv) = (AV *)AvARRAY (av)[AvFILLp (av)--];
243	else	356	else
244	{	357	{
245	#if 0	358	#if CORO_PREFER_PERL_FUNCTIONS
246	/* this is probably cleaner, but also slower? */	359	/* this is probably cleaner, but also slower? */
247	CV *cp = Perl_cv_clone (cv);	360	CV *cp = Perl_cv_clone (cv);
248	CvPADLIST (cv) = CvPADLIST (cp);	361	CvPADLIST (cv) = CvPADLIST (cp);
249	CvPADLIST (cp) = 0;	362	CvPADLIST (cp) = 0;
250	SvREFCNT_dec (cp);	363	SvREFCNT_dec (cp);
251	#else	364	#else
252	CvPADLIST (cv) = coro_clone_padlist (cv);	365	CvPADLIST (cv) = coro_clone_padlist (aTHX_ cv);
253	#endif	366	#endif
254	}	367	}
255	}	368	}
256		369
257	static void	370	static void
258	put_padlist (CV *cv)	371	put_padlist (pTHX_ CV *cv)
259	{	372	{
260	MAGIC *mg = CORO_MAGIC (cv);	373	MAGIC *mg = CORO_MAGIC (cv);
261	AV *av;	374	AV *av;
262		375
263	if (!mg)	376	if (!mg)
…		…
274	av_extend (av, AvMAX (av) + 1);	387	av_extend (av, AvMAX (av) + 1);
275		388
276	AvARRAY (av)[++AvFILLp (av)] = (SV *)CvPADLIST (cv);	389	AvARRAY (av)[++AvFILLp (av)] = (SV *)CvPADLIST (cv);
277	}	390	}
278		391
279	#define SB do {	392	/** load & save, init *******************************************************/
280	#define SE } while (0)
281		393
282	#define LOAD(state) load_state((state));
283	#define SAVE(state,flags) save_state((state),(flags));
284
285	#define REPLACE_SV(sv,val) SB SvREFCNT_dec(sv); (sv) = (val); (val) = 0; SE
286
287	static void	394	static void
288	load_state(Coro__State c)	395	load_perl (pTHX_ Coro__State c)
289	{	396	{
290	#define VAR(name,type) PL_ ## name = c->name;	397	#define VAR(name,type) PL_ ## name = c->name;
291	# include "state.h"	398	# include "state.h"
292	#undef VAR	399	#undef VAR
293		400
294	if (c->defav) REPLACE_SV (GvAV (PL_defgv), c->defav);	401	GvSV (PL_defgv) = c->defsv;
295	if (c->defsv) REPLACE_SV (DEFSV , c->defsv);	402	GvAV (PL_defgv) = c->defav;
296	if (c->errsv) REPLACE_SV (ERRSV , c->errsv);	403	GvSV (PL_errgv) = c->errsv;
		404	GvSV (irsgv) = c->irssv_sv;
297		405
298	{	406	{
299	dSP;	407	dSP;
300	CV *cv;	408	CV *cv;
301		409
302	/* now do the ugly restore mess */	410	/* now do the ugly restore mess */
303	while ((cv = (CV *)POPs))	411	while ((cv = (CV *)POPs))
304	{	412	{
305	put_padlist (cv); /* mark this padlist as available */	413	put_padlist (aTHX_ cv); /* mark this padlist as available */
306	CvDEPTH (cv) = PTR2IV (POPs);	414	CvDEPTH (cv) = PTR2IV (POPs);
307	CvPADLIST (cv) = (AV *)POPs;	415	CvPADLIST (cv) = (AV *)POPs;
308	}	416	}
309		417
310	PUTBACK;	418	PUTBACK;
311	}	419	}
312	}	420	}
313		421
314	static void	422	static void
315	save_state(Coro__State c, int flags)	423	save_perl (pTHX_ Coro__State c)
316	{	424	{
317	{	425	{
318	dSP;	426	dSP;
319	I32 cxix = cxstack_ix;	427	I32 cxix = cxstack_ix;
320	PERL_CONTEXT *ccstk = cxstack;	428	PERL_CONTEXT *ccstk = cxstack;
…		…
323	/*	431	/*
324	* the worst thing you can imagine happens first - we have to save	432	* the worst thing you can imagine happens first - we have to save
325	* (and reinitialize) all cv's in the whole callchain :(	433	* (and reinitialize) all cv's in the whole callchain :(
326	*/	434	*/
327		435
328	PUSHs (Nullsv);	436	XPUSHs (Nullsv);
329	/* this loop was inspired by pp_caller */	437	/* this loop was inspired by pp_caller */
330	for (;;)	438	for (;;)
331	{	439	{
332	while (cxix >= 0)	440	while (cxix >= 0)
333	{	441	{
334	PERL_CONTEXT *cx = &ccstk[cxix--];	442	PERL_CONTEXT *cx = &ccstk[cxix--];
335		443
336	if (CxTYPE(cx) == CXt_SUB)	444	if (CxTYPE (cx) == CXt_SUB || CxTYPE (cx) == CXt_FORMAT)
337	{	445	{
338	CV *cv = cx->blk_sub.cv;	446	CV *cv = cx->blk_sub.cv;
339		447
340	if (CvDEPTH (cv))	448	if (CvDEPTH (cv))
341	{	449	{
342	EXTEND (SP, 3);	450	EXTEND (SP, 3);
343
344	PUSHs ((SV *)CvPADLIST(cv));	451	PUSHs ((SV *)CvPADLIST (cv));
345	PUSHs (INT2PTR (SV *, CvDEPTH (cv)));	452	PUSHs (INT2PTR (SV *, CvDEPTH (cv)));
346	PUSHs ((SV *)cv);	453	PUSHs ((SV *)cv);
347		454
348	CvDEPTH (cv) = 0;	455	CvDEPTH (cv) = 0;
349	get_padlist (cv);	456	get_padlist (aTHX_ cv);
350	}	457	}
351	}	458	}
352	#ifdef CXt_FORMAT
353	else if (CxTYPE(cx) == CXt_FORMAT)
354	{
355	/* I never used formats, so how should I know how these are implemented? */
356	/* my bold guess is as a simple, plain sub... */
357	croak ("CXt_FORMAT not yet handled. Don't switch coroutines from within formats");
358	}
359	#endif
360	}	459	}
361		460
362	if (top_si->si_type == PERLSI_MAIN)	461	if (top_si->si_type == PERLSI_MAIN)
363	break;	462	break;
364		463
365	top_si = top_si->si_prev;	464	top_si = top_si->si_prev;
366	ccstk = top_si->si_cxstack;	465	ccstk = top_si->si_cxstack;
367	cxix = top_si->si_cxix;	466	cxix = top_si->si_cxix;
368	}	467	}
369		468
370	PUTBACK;	469	PUTBACK;
371	}	470	}
372		471
373	c->defav = flags & TRANSFER_SAVE_DEFAV ? (AV *)SvREFCNT_inc (GvAV (PL_defgv)) : 0;	472	c->defav = GvAV (PL_defgv);
374	c->defsv = flags & TRANSFER_SAVE_DEFSV ? SvREFCNT_inc (DEFSV) : 0;	473	c->defsv = DEFSV;
375	c->errsv = flags & TRANSFER_SAVE_ERRSV ? SvREFCNT_inc (ERRSV) : 0;	474	c->errsv = ERRSV;
		475	c->irssv_sv = GvSV (irsgv);
376		476
377	#define VAR(name,type)c->name = PL_ ## name;	477	#define VAR(name,type)c->name = PL_ ## name;
378	# include "state.h"	478	# include "state.h"
379	#undef VAR	479	#undef VAR
380	}	480	}
…		…
383	* allocate various perl stacks. This is an exact copy	483	* allocate various perl stacks. This is an exact copy
384	* of perl.c:init_stacks, except that it uses less memory	484	* of perl.c:init_stacks, except that it uses less memory
385	* on the (sometimes correct) assumption that coroutines do	485	* on the (sometimes correct) assumption that coroutines do
386	* not usually need a lot of stackspace.	486	* not usually need a lot of stackspace.
387	*/	487	*/
		488	#if CORO_PREFER_PERL_FUNCTIONS
		489	# define coro_init_stacks init_stacks
		490	#else
388	static void	491	static void
389	coro_init_stacks ()	492	coro_init_stacks (pTHX)
390	{	493	{
391	PL_curstackinfo = new_stackinfo(96, 1024/sizeof(PERL_CONTEXT) - 1);	494	PL_curstackinfo = new_stackinfo(64, 6);
392	PL_curstackinfo->si_type = PERLSI_MAIN;	495	PL_curstackinfo->si_type = PERLSI_MAIN;
393	PL_curstack = PL_curstackinfo->si_stack;	496	PL_curstack = PL_curstackinfo->si_stack;
394	PL_mainstack = PL_curstack; /* remember in case we switch stacks */	497	PL_mainstack = PL_curstack; /* remember in case we switch stacks */
395		498
396	PL_stack_base = AvARRAY(PL_curstack);	499	PL_stack_base = AvARRAY(PL_curstack);
397	PL_stack_sp = PL_stack_base;	500	PL_stack_sp = PL_stack_base;
398	PL_stack_max = PL_stack_base + AvMAX(PL_curstack);	501	PL_stack_max = PL_stack_base + AvMAX(PL_curstack);
399		502
400	New(50,PL_tmps_stack,96,SV*);	503	New(50,PL_tmps_stack,64,SV*);
401	PL_tmps_floor = -1;	504	PL_tmps_floor = -1;
402	PL_tmps_ix = -1;	505	PL_tmps_ix = -1;
403	PL_tmps_max = 96;	506	PL_tmps_max = 64;
404		507
405	New(54,PL_markstack,16,I32);	508	New(54,PL_markstack,16,I32);
406	PL_markstack_ptr = PL_markstack;	509	PL_markstack_ptr = PL_markstack;
407	PL_markstack_max = PL_markstack + 16;	510	PL_markstack_max = PL_markstack + 16;
408		511
…		…
412		515
413	New(54,PL_scopestack,16,I32);	516	New(54,PL_scopestack,16,I32);
414	PL_scopestack_ix = 0;	517	PL_scopestack_ix = 0;
415	PL_scopestack_max = 16;	518	PL_scopestack_max = 16;
416		519
417	New(54,PL_savestack,96,ANY);	520	New(54,PL_savestack,64,ANY);
418	PL_savestack_ix = 0;	521	PL_savestack_ix = 0;
419	PL_savestack_max = 96;	522	PL_savestack_max = 64;
420		523
421	#if !PERL_VERSION_ATLEAST (5,9,0)	524	#if !PERL_VERSION_ATLEAST (5,9,0)
422	New(54,PL_retstack,8,OP*);	525	New(54,PL_retstack,4,OP*);
423	PL_retstack_ix = 0;	526	PL_retstack_ix = 0;
424	PL_retstack_max = 8;	527	PL_retstack_max = 4;
425	#endif	528	#endif
426	}	529	}
		530	#endif
427		531
428	/*	532	/*
429	* destroy the stacks, the callchain etc...	533	* destroy the stacks, the callchain etc...
430	*/	534	*/
431	static void	535	static void
432	coro_destroy_stacks ()	536	coro_destroy_stacks (pTHX)
433	{	537	{
434	if (!IN_DESTRUCT)
435	{
436	/* is this ugly, I ask? */
437	LEAVE_SCOPE (0);
438
439	/* sure it is, but more important: is it correct?? :/ */
440	FREETMPS;
441
442	/*POPSTACK_TO (PL_mainstack);*//*D*//*use*/
443	}
444
445	while (PL_curstackinfo->si_next)	538	while (PL_curstackinfo->si_next)
446	PL_curstackinfo = PL_curstackinfo->si_next;	539	PL_curstackinfo = PL_curstackinfo->si_next;
447		540
448	while (PL_curstackinfo)	541	while (PL_curstackinfo)
449	{	542	{
450	PERL_SI *p = PL_curstackinfo->si_prev;	543	PERL_SI *p = PL_curstackinfo->si_prev;
451		544
452	{ /*D*//*remove*/
453	dSP;
454	SWITCHSTACK (PL_curstack, PL_curstackinfo->si_stack);
455	PUTBACK; /* possibly superfluous */
456	}
457
458	if (!IN_DESTRUCT)	545	if (!IN_DESTRUCT)
459	{
460	dounwind (-1);/*D*//*remove*/
461	SvREFCNT_dec (PL_curstackinfo->si_stack);	546	SvREFCNT_dec (PL_curstackinfo->si_stack);
462	}
463		547
464	Safefree (PL_curstackinfo->si_cxstack);	548	Safefree (PL_curstackinfo->si_cxstack);
465	Safefree (PL_curstackinfo);	549	Safefree (PL_curstackinfo);
466	PL_curstackinfo = p;	550	PL_curstackinfo = p;
467	}	551	}
…		…
473	#if !PERL_VERSION_ATLEAST (5,9,0)	557	#if !PERL_VERSION_ATLEAST (5,9,0)
474	Safefree (PL_retstack);	558	Safefree (PL_retstack);
475	#endif	559	#endif
476	}	560	}
477		561
478	static void	562	static size_t
479	setup_coro (struct coro *coro)	563	coro_rss (pTHX_ struct coro *coro)
		564	{
		565	size_t rss = sizeof (*coro);
		566
		567	if (coro->mainstack)
		568	{
		569	if (coro->flags & CF_RUNNING)
		570	{
		571	#define VAR(name,type)coro->name = PL_ ## name;
		572	# include "state.h"
		573	#undef VAR
		574	}
		575
		576	rss += sizeof (coro->curstackinfo);
		577	rss += sizeof (SV) + sizeof (struct xpvav) + (1 + AvFILL (coro->curstackinfo->si_stack)) * sizeof (SV *);
		578	rss += (coro->curstackinfo->si_cxmax + 1) * sizeof (PERL_CONTEXT);
		579	rss += sizeof (SV) + sizeof (struct xpvav) + (1 + AvFILL (coro->curstack)) * sizeof (SV *);
		580	rss += coro->tmps_max * sizeof (SV *);
		581	rss += (coro->markstack_max - coro->markstack_ptr) * sizeof (I32);
		582	rss += coro->scopestack_max * sizeof (I32);
		583	rss += coro->savestack_max * sizeof (ANY);
		584
		585	#if !PERL_VERSION_ATLEAST (5,9,0)
		586	rss += coro->retstack_max * sizeof (OP *);
		587	#endif
		588	}
		589
		590	return rss;
		591	}
		592
		593	/** coroutine stack handling ************************************************/
		594
		595	static void
		596	coro_setup (pTHX_ struct coro *coro)
480	{	597	{
481	/*	598	/*
482	* emulate part of the perl startup here.	599	* emulate part of the perl startup here.
483	*/	600	*/
484
485	coro_init_stacks ();	601	coro_init_stacks (aTHX);
486		602
		603	PL_runops = RUNOPS_DEFAULT;
		604	PL_curcop = &PL_compiling;
		605	PL_in_eval = EVAL_NULL;
487	PL_curcop = 0;	606	PL_comppad = 0;
488	PL_in_eval = 0;
489	PL_curpm = 0;	607	PL_curpm = 0;
		608	PL_localizing = 0;
		609	PL_dirty = 0;
		610	PL_restartop = 0;
		611
		612	GvSV (PL_defgv) = newSV (0);
		613	GvAV (PL_defgv) = coro->args; coro->args = 0;
		614	GvSV (PL_errgv) = newSV (0);
		615	GvSV (irsgv) = newSVpvn ("\n", 1); sv_magic (GvSV (irsgv), (SV *)irsgv, PERL_MAGIC_sv, "/", 0);
		616	PL_rs = newSVsv (GvSV (irsgv));
		617	PL_defoutgv = SvREFCNT_inc (stdoutgv);
490		618
491	{	619	{
492	dSP;	620	dSP;
493	LOGOP myop;	621	LOGOP myop;
494		622
495	/* I have no idea why this is needed, but it is */
496	PUSHMARK (SP);
497
498	SvREFCNT_dec (GvAV (PL_defgv));
499	GvAV (PL_defgv) = coro->args; coro->args = 0;
500
501	Zero (&myop, 1, LOGOP);	623	Zero (&myop, 1, LOGOP);
502	myop.op_next = Nullop;	624	myop.op_next = Nullop;
503	myop.op_flags = OPf_WANT_VOID;	625	myop.op_flags = OPf_WANT_VOID;
504		626
		627	PUSHMARK (SP);
		628	XPUSHs (av_shift (GvAV (PL_defgv)));
		629	PUTBACK;
505	PL_op = (OP *)&myop;	630	PL_op = (OP *)&myop;
506
507	PUSHMARK (SP);
508	XPUSHs ((SV *)get_cv ("Coro::State::_coro_init", FALSE));
509	PUTBACK;
510	PL_op = PL_ppaddr[OP_ENTERSUB](aTHX);	631	PL_op = PL_ppaddr[OP_ENTERSUB](aTHX);
511	SPAGAIN;	632	SPAGAIN;
512
513	ENTER; /* necessary e.g. for dounwind */
514	}	633	}
515	}
516		634
		635	ENTER; /* necessary e.g. for dounwind */
		636	}
		637
517	static void	638	static void
		639	coro_destroy (pTHX_ struct coro *coro)
		640	{
		641	if (!IN_DESTRUCT)
		642	{
		643	/* restore all saved variables and stuff */
		644	LEAVE_SCOPE (0);
		645	assert (PL_tmps_floor == -1);
		646
		647	/* free all temporaries */
		648	FREETMPS;
		649	assert (PL_tmps_ix == -1);
		650
		651	/* unwind all extra stacks */
		652	POPSTACK_TO (PL_mainstack);
		653
		654	/* unwind main stack */
		655	dounwind (-1);
		656	}
		657
		658	SvREFCNT_dec (GvSV (PL_defgv));
		659	SvREFCNT_dec (GvAV (PL_defgv));
		660	SvREFCNT_dec (GvSV (PL_errgv));
		661	SvREFCNT_dec (PL_defoutgv);
		662	SvREFCNT_dec (PL_rs);
		663	SvREFCNT_dec (GvSV (irsgv));
		664
		665	SvREFCNT_dec (coro->saved_deffh);
		666	//SvREFCNT_dec (coro->throw);
		667
		668	coro_destroy_stacks (aTHX);
		669	}
		670
		671	static void
518	free_coro_mortal ()	672	free_coro_mortal (pTHX)
519	{	673	{
520	if (coro_mortal)	674	if (coro_mortal)
521	{	675	{
522	SvREFCNT_dec (coro_mortal);	676	SvREFCNT_dec (coro_mortal);
523	coro_mortal = 0;	677	coro_mortal = 0;
524	}	678	}
525	}	679	}
526		680
		681	static int
		682	runops_trace (pTHX)
		683	{
		684	COP *oldcop = 0;
		685	int oldcxix = -2;
		686	struct coro *coro = SvSTATE (coro_current); /* trace cctx is tied to specific coro */
		687	coro_cctx *cctx = coro->cctx;
		688
		689	while ((PL_op = CALL_FPTR (PL_op->op_ppaddr) (aTHX)))
		690	{
		691	PERL_ASYNC_CHECK ();
		692
		693	if (cctx->flags & CC_TRACE_ALL)
		694	{
		695	if (PL_op->op_type == OP_LEAVESUB && cctx->flags & CC_TRACE_SUB)
		696	{
		697	PERL_CONTEXT *cx = &cxstack[cxstack_ix];
		698	SV **bot, **top;
		699	AV *av = newAV (); /* return values */
		700	SV **cb;
		701	dSP;
		702
		703	GV *gv = CvGV (cx->blk_sub.cv);
		704	SV *fullname = sv_2mortal (newSV (0));
		705	if (isGV (gv))
		706	gv_efullname3 (fullname, gv, 0);
		707
		708	bot = PL_stack_base + cx->blk_oldsp + 1;
		709	top = cx->blk_gimme == G_ARRAY ? SP + 1
		710	: cx->blk_gimme == G_SCALAR ? bot + 1
		711	: bot;
		712
		713	while (bot < top)
		714	av_push (av, SvREFCNT_inc (*bot++));
		715
		716	PL_runops = RUNOPS_DEFAULT;
		717	ENTER;
		718	SAVETMPS;
		719	EXTEND (SP, 3);
		720	PUSHMARK (SP);
		721	PUSHs (&PL_sv_no);
		722	PUSHs (fullname);
		723	PUSHs (sv_2mortal (newRV_noinc ((SV *)av)));
		724	PUTBACK;
		725	cb = hv_fetch ((HV *)SvRV (coro_current), "_trace_sub_cb", sizeof ("_trace_sub_cb") - 1, 0);
		726	if (cb) call_sv (*cb, G_KEEPERR | G_EVAL | G_VOID | G_DISCARD);
		727	SPAGAIN;
		728	FREETMPS;
		729	LEAVE;
		730	PL_runops = runops_trace;
		731	}
		732
		733	if (oldcop != PL_curcop)
		734	{
		735	oldcop = PL_curcop;
		736
		737	if (PL_curcop != &PL_compiling)
		738	{
		739	SV **cb;
		740
		741	if (oldcxix != cxstack_ix && cctx->flags & CC_TRACE_SUB)
		742	{
		743	PERL_CONTEXT *cx = &cxstack[cxstack_ix];
		744
		745	if (CxTYPE (cx) == CXt_SUB && oldcxix < cxstack_ix)
		746	{
		747	runops_proc_t old_runops = PL_runops;
		748	dSP;
		749	GV *gv = CvGV (cx->blk_sub.cv);
		750	SV *fullname = sv_2mortal (newSV (0));
		751
		752	if (isGV (gv))
		753	gv_efullname3 (fullname, gv, 0);
		754
		755	PL_runops = RUNOPS_DEFAULT;
		756	ENTER;
		757	SAVETMPS;
		758	EXTEND (SP, 3);
		759	PUSHMARK (SP);
		760	PUSHs (&PL_sv_yes);
		761	PUSHs (fullname);
		762	PUSHs (cx->blk_sub.hasargs ? sv_2mortal (newRV_inc ((SV *)cx->blk_sub.argarray)) : &PL_sv_undef);
		763	PUTBACK;
		764	cb = hv_fetch ((HV *)SvRV (coro_current), "_trace_sub_cb", sizeof ("_trace_sub_cb") - 1, 0);
		765	if (cb) call_sv (*cb, G_KEEPERR | G_EVAL | G_VOID | G_DISCARD);
		766	SPAGAIN;
		767	FREETMPS;
		768	LEAVE;
		769	PL_runops = runops_trace;
		770	}
		771
		772	oldcxix = cxstack_ix;
		773	}
		774
		775	if (cctx->flags & CC_TRACE_LINE)
		776	{
		777	dSP;
		778
		779	PL_runops = RUNOPS_DEFAULT;
		780	ENTER;
		781	SAVETMPS;
		782	EXTEND (SP, 3);
		783	PL_runops = RUNOPS_DEFAULT;
		784	PUSHMARK (SP);
		785	PUSHs (sv_2mortal (newSVpv (OutCopFILE (oldcop), 0)));
		786	PUSHs (sv_2mortal (newSViv (CopLINE (oldcop))));
		787	PUTBACK;
		788	cb = hv_fetch ((HV *)SvRV (coro_current), "_trace_line_cb", sizeof ("_trace_line_cb") - 1, 0);
		789	if (cb) call_sv (*cb, G_KEEPERR | G_EVAL | G_VOID | G_DISCARD);
		790	SPAGAIN;
		791	FREETMPS;
		792	LEAVE;
		793	PL_runops = runops_trace;
		794	}
		795	}
		796	}
		797	}
		798	}
		799
		800	TAINT_NOT;
		801	return 0;
		802	}
		803
		804	/* inject a fake call to Coro::State::_cctx_init into the execution */
		805	/* _cctx_init should be careful, as it could be called at almost any time */
		806	/* during execution of a perl program */
527	static void NOINLINE	807	static void NOINLINE
528	prepare_cctx (coro_cctx *cctx)	808	prepare_cctx (pTHX_ coro_cctx *cctx)
529	{	809	{
530	dSP;	810	dSP;
531	LOGOP myop;	811	LOGOP myop;
532		812
		813	PL_top_env = &PL_start_env;
		814
		815	if (cctx->flags & CC_TRACE)
		816	PL_runops = runops_trace;
		817
533	Zero (&myop, 1, LOGOP);	818	Zero (&myop, 1, LOGOP);
534	myop.op_next = PL_op;	819	myop.op_next = PL_op;
535	myop.op_flags = OPf_WANT_VOID;	820	myop.op_flags = OPf_WANT_VOID | OPf_STACKED;
536
537	sv_setiv (get_sv ("Coro::State::_cctx", FALSE), PTR2IV (cctx));
538		821
539	PUSHMARK (SP);	822	PUSHMARK (SP);
		823	EXTEND (SP, 2);
		824	PUSHs (sv_2mortal (newSViv (PTR2IV (cctx))));
540	XPUSHs ((SV *)get_cv ("Coro::State::_cctx_init", FALSE));	825	PUSHs ((SV *)get_cv ("Coro::State::_cctx_init", FALSE));
541	PUTBACK;	826	PUTBACK;
		827	PL_op = (OP *)&myop;
542	PL_restartop = PL_ppaddr[OP_ENTERSUB](aTHX);	828	PL_op = PL_ppaddr[OP_ENTERSUB](aTHX);
543	SPAGAIN;	829	SPAGAIN;
544	}	830	}
545		831
		832	/*
		833	* this is a _very_ stripped down perl interpreter ;)
		834	*/
546	static void	835	static void
547	coro_run (void *arg)	836	coro_run (void *arg)
548	{	837	{
		838	dTHX;
		839
549	/* coro_run is the alternative epilogue of transfer() */	840	/* coro_run is the alternative tail of transfer(), so unlock here. */
550	UNLOCK;	841	UNLOCK;
551		842
		843	/* we now skip the entersub that lead to transfer() */
		844	PL_op = PL_op->op_next;
		845
		846	/* inject a fake subroutine call to cctx_init */
		847	prepare_cctx (aTHX_ (coro_cctx *)arg);
		848
		849	/* somebody or something will hit me for both perl_run and PL_restartop */
		850	PL_restartop = PL_op;
		851	perl_run (PL_curinterp);
		852
552	/*	853	/*
553	* this is a _very_ stripped down perl interpreter ;)	854	* If perl-run returns we assume exit() was being called or the coro
		855	* fell off the end, which seems to be the only valid (non-bug)
		856	* reason for perl_run to return. We try to exit by jumping to the
		857	* bootstrap-time "top" top_env, as we cannot restore the "main"
		858	* coroutine as Coro has no such concept
554	*/	859	*/
555	PL_top_env = &PL_start_env;	860	PL_top_env = main_top_env;
556		861	JMPENV_JUMP (2); /* I do not feel well about the hardcoded 2 at all */
557	/* inject call to cctx_init */
558	prepare_cctx ((coro_cctx *)arg);
559
560	/* somebody will hit me for both perl_run and PL_restartop */
561	perl_run (PL_curinterp);
562
563	fputs ("FATAL: C coroutine fell over the edge of the world, aborting. Did you call exit in a coroutine?\n", stderr);
564	abort ();
565	}	862	}
566		863
567	static coro_cctx *	864	static coro_cctx *
568	cctx_new ()	865	cctx_new ()
569	{	866	{
570	coro_cctx *cctx;	867	coro_cctx *cctx;
		868	void *stack_start;
		869	size_t stack_size;
571		870
572	++cctx_count;	871	++cctx_count;
573		872
574	New (0, cctx, 1, coro_cctx);	873	Newz (0, cctx, 1, coro_cctx);
575		874
576	#if HAVE_MMAP	875	#if HAVE_MMAP
577		876
578	cctx->ssize = ((STACKSIZE * sizeof (long) + PAGESIZE - 1) / PAGESIZE + STACKGUARD) * PAGESIZE;	877	cctx->ssize = ((coro_stacksize * sizeof (long) + PAGESIZE - 1) / PAGESIZE + CORO_STACKGUARD) * PAGESIZE;
579	/* mmap suppsedly does allocate-on-write for us */	878	/* mmap supposedly does allocate-on-write for us */
580	cctx->sptr = mmap (0, cctx->ssize, PROT_EXEC|PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, 0, 0);	879	cctx->sptr = mmap (0, cctx->ssize, PROT_EXEC|PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, 0, 0);
581		880
582	if (cctx->sptr == (void *)-1)	881	if (cctx->sptr != (void *)-1)
583	{
584	perror ("FATAL: unable to mmap stack for coroutine");
585	_exit (EXIT_FAILURE);
586	}	882	{
587
588	# if STACKGUARD	883	# if CORO_STACKGUARD
589	mprotect (cctx->sptr, STACKGUARD * PAGESIZE, PROT_NONE);	884	mprotect (cctx->sptr, CORO_STACKGUARD * PAGESIZE, PROT_NONE);
590	# endif	885	# endif
		886	stack_start = CORO_STACKGUARD * PAGESIZE + (char *)cctx->sptr;
		887	stack_size = cctx->ssize - CORO_STACKGUARD * PAGESIZE;
		888	cctx->flags |= CC_MAPPED;
		889	}
		890	else
		891	#endif
		892	{
		893	cctx->ssize = coro_stacksize * (long)sizeof (long);
		894	New (0, cctx->sptr, coro_stacksize, long);
591		895
592	#else
593
594	cctx->ssize = STACKSIZE * (long)sizeof (long);
595	New (0, cctx->sptr, STACKSIZE, long);
596
597	if (!cctx->sptr)	896	if (!cctx->sptr)
598	{	897	{
599	perror ("FATAL: unable to malloc stack for coroutine");	898	perror ("FATAL: unable to allocate stack for coroutine");
600	_exit (EXIT_FAILURE);	899	_exit (EXIT_FAILURE);
601	}	900	}
602		901
603	#endif	902	stack_start = cctx->sptr;
		903	stack_size = cctx->ssize;
		904	}
604		905
605	#if USE_VALGRIND	906	REGISTER_STACK (cctx, (char *)stack_start, (char *)stack_start + stack_size);
606	cctx->valgrind_id = VALGRIND_STACK_REGISTER (
607	STACKGUARD * PAGESIZE + (char *)cctx->sptr,
608	cctx->ssize + (char *)cctx->sptr
609	);
610	#endif
611
612	coro_create (&cctx->cctx, coro_run, (void *)cctx, cctx->sptr, cctx->ssize);	907	coro_create (&cctx->cctx, coro_run, (void *)cctx, stack_start, stack_size);
613		908
614	return cctx;	909	return cctx;
615	}	910	}
616		911
617	static void	912	static void
618	cctx_free (coro_cctx *cctx)	913	cctx_destroy (coro_cctx *cctx)
619	{	914	{
620	if (!cctx)	915	if (!cctx)
621	return;	916	return;
622		917
623	--cctx_count;	918	--cctx_count;
624		919
625	#if USE_VALGRIND	920	#if CORO_USE_VALGRIND
626	VALGRIND_STACK_DEREGISTER (cctx->valgrind_id);	921	VALGRIND_STACK_DEREGISTER (cctx->valgrind_id);
627	#endif	922	#endif
628		923
629	#if HAVE_MMAP	924	#if HAVE_MMAP
		925	if (cctx->flags & CC_MAPPED)
630	munmap (cctx->sptr, cctx->ssize);	926	munmap (cctx->sptr, cctx->ssize);
631	#else	927	else
		928	#endif
632	Safefree (cctx->sptr);	929	Safefree (cctx->sptr);
633	#endif
634		930
635	Safefree (cctx);	931	Safefree (cctx);
636	}	932	}
637		933
638	static coro_cctx *	934	static coro_cctx *
639	cctx_get ()	935	cctx_get (pTHX)
640	{	936	{
641	coro_cctx *cctx;
642
643	if (cctx_first)	937	while (cctx_first)
644	{	938	{
		939	coro_cctx *cctx = cctx_first;
		940	cctx_first = cctx->next;
645	--cctx_idle;	941	--cctx_idle;
646	cctx = cctx_first;	942
647	cctx_first = cctx->next;	943	if (cctx->ssize >= coro_stacksize && !(cctx->flags & CC_NOREUSE))
648	}	944	return cctx;
649	else	945
650	{	946	cctx_destroy (cctx);
651	cctx = cctx_new ();
652	PL_op = PL_op->op_next;
653	}	947	}
654		948
655	return cctx;	949	return cctx_new ();
656	}	950	}
657		951
658	static void	952	static void
659	cctx_put (coro_cctx *cctx)	953	cctx_put (coro_cctx *cctx)
660	{	954	{
		955	/* free another cctx if overlimit */
		956	if (cctx_idle >= MAX_IDLE_CCTX)
		957	{
		958	coro_cctx *first = cctx_first;
		959	cctx_first = first->next;
		960	--cctx_idle;
		961
		962	cctx_destroy (first);
		963	}
		964
661	++cctx_idle;	965	++cctx_idle;
662	cctx->next = cctx_first;	966	cctx->next = cctx_first;
663	cctx_first = cctx;	967	cctx_first = cctx;
664	}	968	}
665		969
666	/* never call directly, always through the coro_state_transfer global variable */	970	/** coroutine switching *****************************************************/
		971
667	static void NOINLINE	972	static void NOINLINE
		973	transfer_check (pTHX_ struct coro *prev, struct coro *next)
		974	{
		975	if (prev != next)
		976	{
		977	if (!(prev->flags & (CF_RUNNING | CF_NEW)))
		978	croak ("Coro::State::transfer called with non-running/new prev Coro::State, but can only transfer from running or new states");
		979
		980	if (next->flags & CF_RUNNING)
		981	croak ("Coro::State::transfer called with running next Coro::State, but can only transfer to inactive states");
		982
		983	if (next->flags & CF_DESTROYED)
		984	croak ("Coro::State::transfer called with destroyed next Coro::State, but can only transfer to inactive states");
		985
		986	if (PL_lex_state != LEX_NOTPARSING)
		987	croak ("Coro::State::transfer called while parsing, but this is not supported");
		988	}
		989	}
		990
		991	/* always use the TRANSFER macro */
		992	static void NOINLINE
668	transfer (struct coro *prev, struct coro *next, int flags)	993	transfer (pTHX_ struct coro *prev, struct coro *next)
669	{	994	{
670	dSTACKLEVEL;	995	dSTACKLEVEL;
671		996
672	/* sometimes transfer is only called to set idle_sp */	997	/* sometimes transfer is only called to set idle_sp */
673	if (flags == TRANSFER_SET_STACKLEVEL)	998	if (!next)
		999	{
674	((coro_cctx *)prev)->idle_sp = STACKLEVEL;	1000	((coro_cctx *)prev)->idle_sp = STACKLEVEL;
		1001	assert (((coro_cctx *)prev)->idle_te = PL_top_env); /* just for the side-effect when asserts are enabled */
		1002	}
675	else if (prev != next)	1003	else if (prev != next)
676	{	1004	{
677	coro_cctx *prev__cctx;	1005	coro_cctx *prev__cctx;
678		1006
679	if (!prev->cctx)	1007	if (prev->flags & CF_NEW)
680	{	1008	{
681	/* create a new empty context */	1009	/* create a new empty context */
682	Newz (0, prev->cctx, 1, coro_cctx);	1010	Newz (0, prev->cctx, 1, coro_cctx);
683	prev->cctx->inuse = 1;	1011	prev->flags &= ~CF_NEW;
684	prev->flags |= CF_RUNNING;	1012	prev->flags |= CF_RUNNING;
685	}	1013	}
686
687	if (!prev->flags & CF_RUNNING)
688	croak ("Coro::State::transfer called with non-running prev Coro::State, but can only transfer from running states");
689
690	if (next->flags & CF_RUNNING)
691	croak ("Coro::State::transfer called with running next Coro::State, but can only transfer to inactive states");
692		1014
693	prev->flags &= ~CF_RUNNING;	1015	prev->flags &= ~CF_RUNNING;
694	next->flags |= CF_RUNNING;	1016	next->flags |= CF_RUNNING;
695		1017
696	LOCK;	1018	LOCK;
697		1019
698	if (next->mainstack)	1020	if (next->flags & CF_NEW)
699	{	1021	{
700	/* coroutine already started */	1022	/* need to start coroutine */
701	SAVE (prev, flags);	1023	next->flags &= ~CF_NEW;
702	LOAD (next);	1024	/* first get rid of the old state */
		1025	save_perl (aTHX_ prev);
		1026	/* setup coroutine call */
		1027	coro_setup (aTHX_ next);
703	}	1028	}
704	else	1029	else
705	{	1030	{
706	/* need to start coroutine */	1031	/* coroutine already started */
707	/* first get rid of the old state */	1032	save_perl (aTHX_ prev);
708	SAVE (prev, -1);	1033	load_perl (aTHX_ next);
709	/* setup coroutine call */
710	setup_coro (next);
711	/* need a new stack */
712	assert (!next->stack);
713	}	1034	}
714		1035
715	prev__cctx = prev->cctx;	1036	prev__cctx = prev->cctx;
716		1037
717	/* possibly "free" the cctx */	1038	/* possibly "free" the cctx */
718	if (prev__cctx->idle_sp == STACKLEVEL)	1039	if (prev__cctx->idle_sp == STACKLEVEL && !(prev__cctx->flags & CC_TRACE))
719	{	1040	{
720	assert (PL_top_env == prev__cctx->top_env);	1041	/* I assume that STACKLEVEL is a stronger indicator than PL_top_env changes */
		1042	assert (("ERROR: current top_env must equal previous top_env", PL_top_env == prev__cctx->idle_te));
		1043
		1044	prev->cctx = 0;
721		1045
722	cctx_put (prev__cctx);	1046	cctx_put (prev__cctx);
723	prev->cctx = 0;
724	}	1047	}
725		1048
		1049	++next->usecount;
		1050
726	if (!next->cctx)	1051	if (!next->cctx)
727	next->cctx = cctx_get ();	1052	next->cctx = cctx_get (aTHX);
728		1053
729	if (prev__cctx != next->cctx)	1054	if (prev__cctx != next->cctx)
730	{	1055	{
731	assert ( prev__cctx->inuse);
732	assert (!next->cctx->inuse);
733
734	prev__cctx->inuse = 0;
735	next->cctx->inuse = 1;
736
737	prev__cctx->top_env = PL_top_env;	1056	prev__cctx->top_env = PL_top_env;
738	PL_top_env = next->cctx->top_env;	1057	PL_top_env = next->cctx->top_env;
739	coro_transfer (&prev__cctx->cctx, &next->cctx->cctx);	1058	coro_transfer (&prev__cctx->cctx, &next->cctx->cctx);
740	}	1059	}
741		1060
742	free_coro_mortal ();	1061	free_coro_mortal (aTHX);
743
744	UNLOCK;	1062	UNLOCK;
745	}	1063	}
746	}	1064	}
747		1065
748	struct transfer_args	1066	struct transfer_args
749	{	1067	{
750	struct coro *prev, *next;	1068	struct coro *prev, *next;
751	int flags;
752	};	1069	};
753		1070
754	#define TRANSFER(ta) transfer ((ta).prev, (ta).next, (ta).flags)	1071	#define TRANSFER(ta) transfer (aTHX_ (ta).prev, (ta).next)
		1072	#define TRANSFER_CHECK(ta) transfer_check (aTHX_ (ta).prev, (ta).next)
755		1073
		1074	/** high level stuff ********************************************************/
		1075
756	static void	1076	static int
757	coro_state_destroy (struct coro *coro)	1077	coro_state_destroy (pTHX_ struct coro *coro)
758	{	1078	{
759	if (coro->refcnt--)	1079	if (coro->flags & CF_DESTROYED)
760	return;	1080	return 0;
761		1081
		1082	coro->flags |= CF_DESTROYED;
		1083
762	if (coro->flags & CF_RUNNING)	1084	if (coro->flags & CF_READY)
763	croak ("FATAL: tried to destroy currently running coroutine");	1085	{
		1086	/* reduce nready, as destroying a ready coro effectively unreadies it */
		1087	/* alternative: look through all ready queues and remove the coro */
		1088	LOCK;
		1089	--coro_nready;
		1090	UNLOCK;
		1091	}
		1092	else
		1093	coro->flags |= CF_READY; /* make sure it is NOT put into the readyqueue */
764		1094
765	if (coro->mainstack && coro->mainstack != main_mainstack)	1095	if (coro->mainstack && coro->mainstack != main_mainstack)
766	{	1096	{
767	struct coro temp;	1097	struct coro temp;
768		1098
769	SAVE ((&temp), TRANSFER_SAVE_ALL);	1099	if (coro->flags & CF_RUNNING)
770	LOAD (coro);	1100	croak ("FATAL: tried to destroy currently running coroutine");
771		1101
772	coro_destroy_stacks ();	1102	save_perl (aTHX_ &temp);
		1103	load_perl (aTHX_ coro);
773		1104
		1105	coro_destroy (aTHX_ coro);
		1106
774	LOAD ((&temp)); /* this will get rid of defsv etc.. */	1107	load_perl (aTHX_ &temp); /* this will get rid of defsv etc.. */
775		1108
776	coro->mainstack = 0;	1109	coro->mainstack = 0;
777	}	1110	}
778		1111
779	cctx_free (coro->cctx);	1112	cctx_destroy (coro->cctx);
780	SvREFCNT_dec (coro->args);	1113	SvREFCNT_dec (coro->args);
781	Safefree (coro);	1114
		1115	if (coro->next) coro->next->prev = coro->prev;
		1116	if (coro->prev) coro->prev->next = coro->next;
		1117	if (coro == coro_first) coro_first = coro->next;
		1118
		1119	return 1;
782	}	1120	}
783		1121
784	static int	1122	static int
785	coro_state_clear (pTHX_ SV *sv, MAGIC *mg)	1123	coro_state_free (pTHX_ SV *sv, MAGIC *mg)
786	{	1124	{
787	struct coro *coro = (struct coro *)mg->mg_ptr;	1125	struct coro *coro = (struct coro *)mg->mg_ptr;
788	mg->mg_ptr = 0;	1126	mg->mg_ptr = 0;
789		1127
		1128	coro->hv = 0;
		1129
		1130	if (--coro->refcnt < 0)
		1131	{
790	coro_state_destroy (coro);	1132	coro_state_destroy (aTHX_ coro);
		1133	Safefree (coro);
		1134	}
791		1135
792	return 0;	1136	return 0;
793	}	1137	}
794		1138
795	static int	1139	static int
…		…
802	return 0;	1146	return 0;
803	}	1147	}
804		1148
805	static MGVTBL coro_state_vtbl = {	1149	static MGVTBL coro_state_vtbl = {
806	0, 0, 0, 0,	1150	0, 0, 0, 0,
807	coro_state_clear,	1151	coro_state_free,
808	0,	1152	0,
809	#ifdef MGf_DUP	1153	#ifdef MGf_DUP
810	coro_state_dup,	1154	coro_state_dup,
811	#else	1155	#else
812	# define MGf_DUP 0	1156	# define MGf_DUP 0
813	#endif	1157	#endif
814	};	1158	};
815		1159
816	static struct coro *
817	SvSTATE (SV *coro)
818	{
819	HV *stash;
820	MAGIC *mg;
821
822	if (SvROK (coro))
823	coro = SvRV (coro);
824
825	stash = SvSTASH (coro);
826	if (stash != coro_stash && stash != coro_state_stash)
827	{
828	/* very slow, but rare, check */
829	if (!sv_derived_from (sv_2mortal (newRV_inc (coro)), "Coro::State"))
830	croak ("Coro::State object required");
831	}
832
833	mg = SvMAGIC (coro);
834	assert (mg->mg_type == PERL_MAGIC_ext);
835	return (struct coro *)mg->mg_ptr;
836	}
837
838	static void	1160	static void
839	prepare_transfer (struct transfer_args *ta, SV *prev, SV *next, int flags)	1161	prepare_transfer (pTHX_ struct transfer_args *ta, SV *prev_sv, SV *next_sv)
840	{	1162	{
841	ta->prev = SvSTATE (prev);	1163	ta->prev = SvSTATE (prev_sv);
842	ta->next = SvSTATE (next);	1164	ta->next = SvSTATE (next_sv);
843	ta->flags = flags;	1165	TRANSFER_CHECK (*ta);
844	}	1166	}
845		1167
846	static void	1168	static void
847	api_transfer (SV *prev, SV *next, int flags)	1169	api_transfer (SV *prev_sv, SV *next_sv)
848	{	1170	{
849	dTHX;	1171	dTHX;
850	struct transfer_args ta;	1172	struct transfer_args ta;
851		1173
852	prepare_transfer (&ta, prev, next, flags);	1174	prepare_transfer (aTHX_ &ta, prev_sv, next_sv);
853	TRANSFER (ta);	1175	TRANSFER (ta);
854	}	1176	}
855		1177
856	/** Coro ********************************************************************/	1178	/** Coro ********************************************************************/
857		1179
858	#define PRIO_MAX 3
859	#define PRIO_HIGH 1
860	#define PRIO_NORMAL 0
861	#define PRIO_LOW -1
862	#define PRIO_IDLE -3
863	#define PRIO_MIN -4
864
865	/* for Coro.pm */
866	static GV *coro_current, *coro_idle;
867	static AV *coro_ready [PRIO_MAX-PRIO_MIN+1];
868	static int coro_nready;
869
870	static void	1180	static void
871	coro_enq (SV *coro_sv)	1181	coro_enq (pTHX_ SV *coro_sv)
872	{	1182	{
873	av_push (coro_ready [SvSTATE (coro_sv)->prio - PRIO_MIN], coro_sv);	1183	av_push (coro_ready [SvSTATE (coro_sv)->prio - PRIO_MIN], coro_sv);
874	coro_nready++;
875	}	1184	}
876		1185
877	static SV *	1186	static SV *
878	coro_deq (int min_prio)	1187	coro_deq (pTHX_ int min_prio)
879	{	1188	{
880	int prio = PRIO_MAX - PRIO_MIN;	1189	int prio = PRIO_MAX - PRIO_MIN;
881		1190
882	min_prio -= PRIO_MIN;	1191	min_prio -= PRIO_MIN;
883	if (min_prio < 0)	1192	if (min_prio < 0)
884	min_prio = 0;	1193	min_prio = 0;
885		1194
886	for (prio = PRIO_MAX - PRIO_MIN + 1; --prio >= min_prio; )	1195	for (prio = PRIO_MAX - PRIO_MIN + 1; --prio >= min_prio; )
887	if (AvFILLp (coro_ready [prio]) >= 0)	1196	if (AvFILLp (coro_ready [prio]) >= 0)
888	{
889	coro_nready--;
890	return av_shift (coro_ready [prio]);	1197	return av_shift (coro_ready [prio]);
891	}
892		1198
893	return 0;	1199	return 0;
894	}	1200	}
895		1201
896	static int	1202	static int
897	api_ready (SV *coro_sv)	1203	api_ready (SV *coro_sv)
898	{	1204	{
		1205	dTHX;
899	struct coro *coro;	1206	struct coro *coro;
900		1207
901	if (SvROK (coro_sv))	1208	if (SvROK (coro_sv))
902	coro_sv = SvRV (coro_sv);	1209	coro_sv = SvRV (coro_sv);
903		1210
904	coro = SvSTATE (coro_sv);	1211	coro = SvSTATE (coro_sv);
905		1212
906	if (coro->flags & CF_READY)	1213	if (coro->flags & CF_READY)
907	return 0;	1214	return 0;
908		1215
909	if (coro->flags & CF_RUNNING)
910	croak ("Coro::ready called on currently running coroutine");
911
912	coro->flags |= CF_READY;	1216	coro->flags |= CF_READY;
913		1217
914	LOCK;	1218	LOCK;
915	coro_enq (SvREFCNT_inc (coro_sv));	1219	coro_enq (aTHX_ SvREFCNT_inc (coro_sv));
		1220	++coro_nready;
916	UNLOCK;	1221	UNLOCK;
917		1222
918	return 1;	1223	return 1;
919	}	1224	}
920		1225
921	static int	1226	static int
922	api_is_ready (SV *coro_sv)	1227	api_is_ready (SV *coro_sv)
923	{	1228	{
		1229	dTHX;
924	return !!SvSTATE (coro_sv)->flags & CF_READY;	1230	return !!(SvSTATE (coro_sv)->flags & CF_READY);
925	}	1231	}
926		1232
927	static void	1233	static void
928	prepare_schedule (struct transfer_args *ta)	1234	prepare_schedule (pTHX_ struct transfer_args *ta)
929	{	1235	{
930	SV *current, *prev, *next;	1236	SV *prev_sv, *next_sv;
931
932	current = GvSV (coro_current);
933		1237
934	for (;;)	1238	for (;;)
935	{	1239	{
936	LOCK;	1240	LOCK;
937	next = coro_deq (PRIO_MIN);	1241	next_sv = coro_deq (aTHX_ PRIO_MIN);
		1242
		1243	/* nothing to schedule: call the idle handler */
		1244	if (!next_sv)
		1245	{
		1246	dSP;
		1247	UNLOCK;
		1248
		1249	ENTER;
		1250	SAVETMPS;
		1251
		1252	PUSHMARK (SP);
		1253	PUTBACK;
		1254	call_sv (get_sv ("Coro::idle", FALSE), G_DISCARD);
		1255
		1256	FREETMPS;
		1257	LEAVE;
		1258	continue;
		1259	}
		1260
		1261	ta->next = SvSTATE (next_sv);
		1262
		1263	/* cannot transfer to destroyed coros, skip and look for next */
		1264	if (ta->next->flags & CF_DESTROYED)
		1265	{
		1266	UNLOCK;
		1267	SvREFCNT_dec (next_sv);
		1268	/* coro_nready is already taken care of by destroy */
		1269	continue;
		1270	}
		1271
		1272	--coro_nready;
938	UNLOCK;	1273	UNLOCK;
939
940	if (next)
941	break;	1274	break;
942
943	{
944	dSP;
945
946	ENTER;
947	SAVETMPS;
948
949	PUSHMARK (SP);
950	PUTBACK;
951	call_sv (GvSV (coro_idle), G_DISCARD);
952
953	FREETMPS;
954	LEAVE;
955	}	1275	}
956	}
957
958	prev = SvRV (current);
959	SvRV (current) = next;
960		1276
961	/* free this only after the transfer */	1277	/* free this only after the transfer */
		1278	prev_sv = SvRV (coro_current);
		1279	ta->prev = SvSTATE (prev_sv);
		1280	TRANSFER_CHECK (*ta);
		1281	assert (ta->next->flags & CF_READY);
		1282	ta->next->flags &= ~CF_READY;
		1283	SvRV_set (coro_current, next_sv);
		1284
962	LOCK;	1285	LOCK;
963	free_coro_mortal ();	1286	free_coro_mortal (aTHX);
		1287	coro_mortal = prev_sv;
964	UNLOCK;	1288	UNLOCK;
965	coro_mortal = prev;
966
967	ta->prev = SvSTATE (prev);
968	ta->next = SvSTATE (next);
969	ta->flags = TRANSFER_SAVE_ALL;
970
971	ta->next->flags &= ~CF_READY;
972	}	1289	}
973		1290
974	static void	1291	static void
975	prepare_cede (struct transfer_args *ta)	1292	prepare_cede (pTHX_ struct transfer_args *ta)
976	{	1293	{
977	api_ready (GvSV (coro_current));	1294	api_ready (coro_current);
978
979	prepare_schedule (ta);	1295	prepare_schedule (aTHX_ ta);
		1296	}
		1297
		1298	static int
		1299	prepare_cede_notself (pTHX_ struct transfer_args *ta)
		1300	{
		1301	if (coro_nready)
		1302	{
		1303	SV *prev = SvRV (coro_current);
		1304	prepare_schedule (aTHX_ ta);
		1305	api_ready (prev);
		1306	return 1;
		1307	}
		1308	else
		1309	return 0;
980	}	1310	}
981		1311
982	static void	1312	static void
983	api_schedule (void)	1313	api_schedule (void)
984	{	1314	{
985	dTHX;	1315	dTHX;
986	struct transfer_args ta;	1316	struct transfer_args ta;
987		1317
988	prepare_schedule (&ta);	1318	prepare_schedule (aTHX_ &ta);
989	TRANSFER (ta);	1319	TRANSFER (ta);
990	}	1320	}
991		1321
992	static void	1322	static int
993	api_cede (void)	1323	api_cede (void)
994	{	1324	{
995	dTHX;	1325	dTHX;
996	struct transfer_args ta;	1326	struct transfer_args ta;
997		1327
998	prepare_cede (&ta);	1328	prepare_cede (aTHX_ &ta);
		1329
		1330	if (ta.prev != ta.next)
		1331	{
999	TRANSFER (ta);	1332	TRANSFER (ta);
		1333	return 1;
		1334	}
		1335	else
		1336	return 0;
1000	}	1337	}
1001		1338
		1339	static int
		1340	api_cede_notself (void)
		1341	{
		1342	dTHX;
		1343	struct transfer_args ta;
		1344
		1345	if (prepare_cede_notself (aTHX_ &ta))
		1346	{
		1347	TRANSFER (ta);
		1348	return 1;
		1349	}
		1350	else
		1351	return 0;
		1352	}
		1353
		1354	static void
		1355	api_trace (SV *coro_sv, int flags)
		1356	{
		1357	dTHX;
		1358	struct coro *coro = SvSTATE (coro_sv);
		1359
		1360	if (flags & CC_TRACE)
		1361	{
		1362	if (!coro->cctx)
		1363	coro->cctx = cctx_new ();
		1364	else if (!(coro->cctx->flags & CC_TRACE))
		1365	croak ("cannot enable tracing on coroutine with custom stack");
		1366
		1367	coro->cctx->flags |= CC_NOREUSE | (flags & (CC_TRACE | CC_TRACE_ALL));
		1368	}
		1369	else if (coro->cctx && coro->cctx->flags & CC_TRACE)
		1370	{
		1371	coro->cctx->flags &= ~(CC_TRACE | CC_TRACE_ALL);
		1372
		1373	if (coro->flags & CF_RUNNING)
		1374	PL_runops = RUNOPS_DEFAULT;
		1375	else
		1376	coro->runops = RUNOPS_DEFAULT;
		1377	}
		1378	}
		1379
1002	MODULE = Coro::State PACKAGE = Coro::State	1380	MODULE = Coro::State PACKAGE = Coro::State PREFIX = api_
1003		1381
1004	PROTOTYPES: DISABLE	1382	PROTOTYPES: DISABLE
1005		1383
1006	BOOT:	1384	BOOT:
1007	{	1385	{
1008	#ifdef USE_ITHREADS	1386	#ifdef USE_ITHREADS
1009	MUTEX_INIT (&coro_mutex);	1387	MUTEX_INIT (&coro_mutex);
1010	#endif	1388	#endif
1011	BOOT_PAGESIZE;	1389	BOOT_PAGESIZE;
1012		1390
		1391	irsgv = gv_fetchpv ("/" , GV_ADD|GV_NOTQUAL, SVt_PV);
		1392	stdoutgv = gv_fetchpv ("STDOUT", GV_ADD|GV_NOTQUAL, SVt_PVIO);
		1393
1013	coro_state_stash = gv_stashpv ("Coro::State", TRUE);	1394	coro_state_stash = gv_stashpv ("Coro::State", TRUE);
1014		1395
1015	newCONSTSUB (coro_state_stash, "SAVE_DEFAV", newSViv (TRANSFER_SAVE_DEFAV));	1396	newCONSTSUB (coro_state_stash, "CC_TRACE" , newSViv (CC_TRACE));
1016	newCONSTSUB (coro_state_stash, "SAVE_DEFSV", newSViv (TRANSFER_SAVE_DEFSV));	1397	newCONSTSUB (coro_state_stash, "CC_TRACE_SUB" , newSViv (CC_TRACE_SUB));
1017	newCONSTSUB (coro_state_stash, "SAVE_ERRSV", newSViv (TRANSFER_SAVE_ERRSV));	1398	newCONSTSUB (coro_state_stash, "CC_TRACE_LINE", newSViv (CC_TRACE_LINE));
		1399	newCONSTSUB (coro_state_stash, "CC_TRACE_ALL" , newSViv (CC_TRACE_ALL));
1018		1400
1019	main_mainstack = PL_mainstack;	1401	main_mainstack = PL_mainstack;
		1402	main_top_env = PL_top_env;
		1403
		1404	while (main_top_env->je_prev)
		1405	main_top_env = main_top_env->je_prev;
1020		1406
1021	coroapi.ver = CORO_API_VERSION;	1407	coroapi.ver = CORO_API_VERSION;
1022	coroapi.transfer = api_transfer;	1408	coroapi.transfer = api_transfer;
1023		1409
1024	assert (("PRIO_NORMAL must be 0", !PRIO_NORMAL));	1410	assert (("PRIO_NORMAL must be 0", !PRIO_NORMAL));
…		…
1031	struct coro *coro;	1417	struct coro *coro;
1032	HV *hv;	1418	HV *hv;
1033	int i;	1419	int i;
1034		1420
1035	Newz (0, coro, 1, struct coro);	1421	Newz (0, coro, 1, struct coro);
1036	coro->args = newAV ();	1422	coro->args = newAV ();
		1423	coro->flags = CF_NEW;
1037		1424
		1425	if (coro_first) coro_first->prev = coro;
		1426	coro->next = coro_first;
		1427	coro_first = coro;
		1428
1038	hv = newHV ();	1429	coro->hv = hv = newHV ();
1039	sv_magicext ((SV *)hv, 0, PERL_MAGIC_ext, &coro_state_vtbl, (char *)coro, 0)->mg_flags |= MGf_DUP;	1430	sv_magicext ((SV *)hv, 0, PERL_MAGIC_ext, &coro_state_vtbl, (char *)coro, 0)->mg_flags |= MGf_DUP;
1040	RETVAL = sv_bless (newRV_noinc ((SV *)hv), gv_stashpv (klass, 1));	1431	RETVAL = sv_bless (newRV_noinc ((SV *)hv), gv_stashpv (klass, 1));
1041		1432
1042	for (i = 1; i < items; i++)	1433	for (i = 1; i < items; i++)
1043	av_push (coro->args, newSVsv (ST (i)));	1434	av_push (coro->args, newSVsv (ST (i)));
1044	}	1435	}
1045	OUTPUT:	1436	OUTPUT:
1046	RETVAL	1437	RETVAL
1047		1438
		1439	# these not obviously related functions are all rolled into the same xs
		1440	# function to increase chances that they all will call transfer with the same
		1441	# stack offset
1048	void	1442	void
1049	_set_stacklevel (...)	1443	_set_stacklevel (...)
1050	ALIAS:	1444	ALIAS:
1051	Coro::State::transfer = 1	1445	Coro::State::transfer = 1
1052	Coro::schedule = 2	1446	Coro::schedule = 2
1053	Coro::cede = 3	1447	Coro::cede = 3
1054	Coro::Cont::yield = 4	1448	Coro::cede_notself = 4
1055	CODE:	1449	CODE:
1056	{	1450	{
1057	struct transfer_args ta;	1451	struct transfer_args ta;
1058		1452
1059	switch (ix)	1453	switch (ix)
1060	{	1454	{
1061	case 0:	1455	case 0:
1062	ta.prev = (struct coro *)INT2PTR (coro_cctx *, SvIV (ST (0)));	1456	ta.prev = (struct coro *)INT2PTR (coro_cctx *, SvIV (ST (0)));
1063	ta.next = 0;	1457	ta.next = 0;
1064	ta.flags = TRANSFER_SET_STACKLEVEL;
1065	break;	1458	break;
1066		1459
1067	case 1:	1460	case 1:
1068	if (items != 3)	1461	if (items != 2)
1069	croak ("Coro::State::transfer(prev,next,flags) expects three arguments, not %d", items);	1462	croak ("Coro::State::transfer (prev,next) expects two arguments, not %d", items);
1070		1463
1071	prepare_transfer (&ta, ST (0), ST (1), SvIV (ST (2)));	1464	prepare_transfer (aTHX_ &ta, ST (0), ST (1));
1072	break;	1465	break;
1073		1466
1074	case 2:	1467	case 2:
1075	prepare_schedule (&ta);	1468	prepare_schedule (aTHX_ &ta);
1076	break;	1469	break;
1077		1470
1078	case 3:	1471	case 3:
1079	prepare_cede (&ta);	1472	prepare_cede (aTHX_ &ta);
1080	break;	1473	break;
1081		1474
1082	case 4:	1475	case 4:
1083	{	1476	if (!prepare_cede_notself (aTHX_ &ta))
1084	SV *yieldstack;	1477	XSRETURN_EMPTY;
1085	SV *sv;
1086	AV *defav = GvAV (PL_defgv);
1087		1478
1088	yieldstack = *hv_fetch (
1089	(HV *)SvRV (GvSV (coro_current)),
1090	"yieldstack", sizeof ("yieldstack") - 1,
1091	0
1092	);
1093
1094	/* set up @_ -- ugly */
1095	av_clear (defav);
1096	av_fill (defav, items - 1);
1097	while (items--)
1098	av_store (defav, items, SvREFCNT_inc (ST(items)));
1099
1100	sv = av_pop ((AV *)SvRV (yieldstack));
1101	ta.prev = SvSTATE (*av_fetch ((AV *)SvRV (sv), 0, 0));
1102	ta.next = SvSTATE (*av_fetch ((AV *)SvRV (sv), 1, 0));
1103	ta.flags = 0;
1104	SvREFCNT_dec (sv);
1105	}
1106	break;	1479	break;
1107
1108	}	1480	}
1109		1481
		1482	BARRIER;
1110	TRANSFER (ta);	1483	TRANSFER (ta);
1111	}
1112		1484
1113	void	1485	if (GIMME_V != G_VOID && ta.next != ta.prev)
1114	_clone_state_from (SV *dst, SV *src)	1486	XSRETURN_YES;
		1487	}
		1488
		1489	bool
		1490	_destroy (SV *coro_sv)
1115	CODE:	1491	CODE:
1116	{	1492	RETVAL = coro_state_destroy (aTHX_ SvSTATE (coro_sv));
1117	struct coro *coro_src = SvSTATE (src);	1493	OUTPUT:
1118		1494	RETVAL
1119	sv_unmagic (SvRV (dst), PERL_MAGIC_ext);
1120
1121	++coro_src->refcnt;
1122	sv_magicext (SvRV (dst), 0, PERL_MAGIC_ext, &coro_state_vtbl, (char *)coro_src, 0)->mg_flags |= MGf_DUP;
1123	}
1124		1495
1125	void	1496	void
1126	_exit (code)	1497	_exit (code)
1127	int code	1498	int code
1128	PROTOTYPE: $	1499	PROTOTYPE: $
1129	CODE:	1500	CODE:
1130	_exit (code);	1501	_exit (code);
1131		1502
1132	int	1503	int
		1504	cctx_stacksize (int new_stacksize = 0)
		1505	CODE:
		1506	RETVAL = coro_stacksize;
		1507	if (new_stacksize)
		1508	coro_stacksize = new_stacksize;
		1509	OUTPUT:
		1510	RETVAL
		1511
		1512	int
1133	cctx_count ()	1513	cctx_count ()
1134	CODE:	1514	CODE:
1135	RETVAL = cctx_count;	1515	RETVAL = cctx_count;
1136	OUTPUT:	1516	OUTPUT:
1137	RETVAL	1517	RETVAL
…		…
1141	CODE:	1521	CODE:
1142	RETVAL = cctx_idle;	1522	RETVAL = cctx_idle;
1143	OUTPUT:	1523	OUTPUT:
1144	RETVAL	1524	RETVAL
1145		1525
		1526	void
		1527	list ()
		1528	PPCODE:
		1529	{
		1530	struct coro *coro;
		1531	for (coro = coro_first; coro; coro = coro->next)
		1532	if (coro->hv)
		1533	XPUSHs (sv_2mortal (newRV_inc ((SV *)coro->hv)));
		1534	}
		1535
		1536	void
		1537	call (Coro::State coro, SV *coderef)
		1538	ALIAS:
		1539	eval = 1
		1540	CODE:
		1541	{
		1542	if (coro->mainstack)
		1543	{
		1544	struct coro temp;
		1545	Zero (&temp, 1, struct coro);
		1546
		1547	if (!(coro->flags & CF_RUNNING))
		1548	{
		1549	save_perl (aTHX_ &temp);
		1550	load_perl (aTHX_ coro);
		1551	}
		1552
		1553	{
		1554	dSP;
		1555	ENTER;
		1556	SAVETMPS;
		1557	PUSHMARK (SP);
		1558	PUTBACK;
		1559	if (ix)
		1560	eval_sv (coderef, 0);
		1561	else
		1562	call_sv (coderef, G_KEEPERR | G_EVAL | G_VOID | G_DISCARD);
		1563	SPAGAIN;
		1564	FREETMPS;
		1565	LEAVE;
		1566	PUTBACK;
		1567	}
		1568
		1569	if (!(coro->flags & CF_RUNNING))
		1570	{
		1571	save_perl (aTHX_ coro);
		1572	load_perl (aTHX_ &temp);
		1573	}
		1574	}
		1575	}
		1576
		1577	SV *
		1578	is_ready (Coro::State coro)
		1579	PROTOTYPE: $
		1580	ALIAS:
		1581	is_ready = CF_READY
		1582	is_running = CF_RUNNING
		1583	is_new = CF_NEW
		1584	is_destroyed = CF_DESTROYED
		1585	CODE:
		1586	RETVAL = boolSV (coro->flags & ix);
		1587	OUTPUT:
		1588	RETVAL
		1589
		1590	void
		1591	api_trace (SV *coro, int flags = CC_TRACE | CC_TRACE_SUB)
		1592
		1593	SV *
		1594	has_stack (Coro::State coro)
		1595	PROTOTYPE: $
		1596	CODE:
		1597	RETVAL = boolSV (!!coro->cctx);
		1598	OUTPUT:
		1599	RETVAL
		1600
		1601	int
		1602	is_traced (Coro::State coro)
		1603	PROTOTYPE: $
		1604	CODE:
		1605	RETVAL = (coro->cctx ? coro->cctx->flags : 0) & CC_TRACE_ALL;
		1606	OUTPUT:
		1607	RETVAL
		1608
		1609	IV
		1610	rss (Coro::State coro)
		1611	PROTOTYPE: $
		1612	ALIAS:
		1613	usecount = 1
		1614	CODE:
		1615	switch (ix)
		1616	{
		1617	case 0: RETVAL = coro_rss (aTHX_ coro); break;
		1618	case 1: RETVAL = coro->usecount; break;
		1619	}
		1620	OUTPUT:
		1621	RETVAL
		1622
		1623
1146	MODULE = Coro::State PACKAGE = Coro	1624	MODULE = Coro::State PACKAGE = Coro
1147		1625
1148	BOOT:	1626	BOOT:
1149	{	1627	{
1150	int i;	1628	int i;
		1629
		1630	sv_pool_rss = get_sv ("Coro::POOL_RSS" , TRUE);
		1631	sv_pool_size = get_sv ("Coro::POOL_SIZE" , TRUE);
		1632	av_async_pool = get_av ("Coro::async_pool", TRUE);
		1633
		1634	coro_current = get_sv ("Coro::current", FALSE);
		1635	SvREADONLY_on (coro_current);
1151		1636
1152	coro_stash = gv_stashpv ("Coro", TRUE);	1637	coro_stash = gv_stashpv ("Coro", TRUE);
1153		1638
1154	newCONSTSUB (coro_stash, "PRIO_MAX", newSViv (PRIO_MAX));	1639	newCONSTSUB (coro_stash, "PRIO_MAX", newSViv (PRIO_MAX));
1155	newCONSTSUB (coro_stash, "PRIO_HIGH", newSViv (PRIO_HIGH));	1640	newCONSTSUB (coro_stash, "PRIO_HIGH", newSViv (PRIO_HIGH));
1156	newCONSTSUB (coro_stash, "PRIO_NORMAL", newSViv (PRIO_NORMAL));	1641	newCONSTSUB (coro_stash, "PRIO_NORMAL", newSViv (PRIO_NORMAL));
1157	newCONSTSUB (coro_stash, "PRIO_LOW", newSViv (PRIO_LOW));	1642	newCONSTSUB (coro_stash, "PRIO_LOW", newSViv (PRIO_LOW));
1158	newCONSTSUB (coro_stash, "PRIO_IDLE", newSViv (PRIO_IDLE));	1643	newCONSTSUB (coro_stash, "PRIO_IDLE", newSViv (PRIO_IDLE));
1159	newCONSTSUB (coro_stash, "PRIO_MIN", newSViv (PRIO_MIN));	1644	newCONSTSUB (coro_stash, "PRIO_MIN", newSViv (PRIO_MIN));
1160		1645
1161	coro_current = gv_fetchpv ("Coro::current", TRUE, SVt_PV);
1162	coro_idle = gv_fetchpv ("Coro::idle" , TRUE, SVt_PV);
1163
1164	for (i = PRIO_MAX - PRIO_MIN + 1; i--; )	1646	for (i = PRIO_MAX - PRIO_MIN + 1; i--; )
1165	coro_ready[i] = newAV ();	1647	coro_ready[i] = newAV ();
1166		1648
1167	{	1649	{
1168	SV *sv = perl_get_sv("Coro::API", 1);	1650	SV *sv = perl_get_sv("Coro::API", 1);
1169		1651
1170	coroapi.schedule = api_schedule;	1652	coroapi.schedule = api_schedule;
1171	coroapi.cede = api_cede;	1653	coroapi.cede = api_cede;
		1654	coroapi.cede_notself = api_cede_notself;
1172	coroapi.ready = api_ready;	1655	coroapi.ready = api_ready;
1173	coroapi.is_ready = api_is_ready;	1656	coroapi.is_ready = api_is_ready;
1174	coroapi.nready = &coro_nready;	1657	coroapi.nready = &coro_nready;
1175	coroapi.current = coro_current;	1658	coroapi.current = coro_current;
1176		1659
1177	GCoroAPI = &coroapi;	1660	GCoroAPI = &coroapi;
1178	sv_setiv (sv, (IV)&coroapi);	1661	sv_setiv (sv, (IV)&coroapi);
1179	SvREADONLY_on (sv);	1662	SvREADONLY_on (sv);
1180	}	1663	}
1181	}	1664	}
		1665
		1666	void
		1667	_set_current (SV *current)
		1668	PROTOTYPE: $
		1669	CODE:
		1670	SvREFCNT_dec (SvRV (coro_current));
		1671	SvRV_set (coro_current, SvREFCNT_inc (SvRV (current)));
1182		1672
1183	int	1673	int
1184	prio (Coro::State coro, int newprio = 0)	1674	prio (Coro::State coro, int newprio = 0)
1185	ALIAS:	1675	ALIAS:
1186	nice = 1	1676	nice = 1
…		…
1189	RETVAL = coro->prio;	1679	RETVAL = coro->prio;
1190		1680
1191	if (items > 1)	1681	if (items > 1)
1192	{	1682	{
1193	if (ix)	1683	if (ix)
1194	newprio += coro->prio;	1684	newprio = coro->prio - newprio;
1195		1685
1196	if (newprio < PRIO_MIN) newprio = PRIO_MIN;	1686	if (newprio < PRIO_MIN) newprio = PRIO_MIN;
1197	if (newprio > PRIO_MAX) newprio = PRIO_MAX;	1687	if (newprio > PRIO_MAX) newprio = PRIO_MAX;
1198		1688
1199	coro->prio = newprio;	1689	coro->prio = newprio;
1200	}	1690	}
1201	}	1691	}
		1692	OUTPUT:
		1693	RETVAL
1202		1694
1203	SV *	1695	SV *
1204	ready (SV *self)	1696	ready (SV *self)
1205	PROTOTYPE: $	1697	PROTOTYPE: $
1206	CODE:	1698	CODE:
1207	RETVAL = boolSV (api_ready (self));	1699	RETVAL = boolSV (api_ready (self));
1208	OUTPUT:	1700	OUTPUT:
1209	RETVAL	1701	RETVAL
1210		1702
1211	SV *
1212	is_ready (SV *self)
1213	PROTOTYPE: $
1214	CODE:
1215	RETVAL = boolSV (api_is_ready (self));
1216	OUTPUT:
1217	RETVAL
1218
1219	int	1703	int
1220	nready (...)	1704	nready (...)
1221	PROTOTYPE:	1705	PROTOTYPE:
1222	CODE:	1706	CODE:
1223	RETVAL = coro_nready;	1707	RETVAL = coro_nready;
1224	OUTPUT:	1708	OUTPUT:
1225	RETVAL	1709	RETVAL
1226		1710
		1711	# for async_pool speedup
		1712	void
		1713	_pool_1 (SV *cb)
		1714	CODE:
		1715	{
		1716	struct coro *coro = SvSTATE (coro_current);
		1717	HV *hv = (HV *)SvRV (coro_current);
		1718	AV *defav = GvAV (PL_defgv);
		1719	SV *invoke = hv_delete (hv, "_invoke", sizeof ("_invoke") - 1, 0);
		1720	AV *invoke_av;
		1721	int i, len;
		1722
		1723	if (!invoke)
		1724	croak ("\3terminate\2\n");
		1725
		1726	SvREFCNT_dec (coro->saved_deffh);
		1727	coro->saved_deffh = SvREFCNT_inc ((SV *)PL_defoutgv);
		1728
		1729	hv_store (hv, "desc", sizeof ("desc") - 1,
		1730	newSVpvn ("[async_pool]", sizeof ("[async_pool]") - 1), 0);
		1731
		1732	invoke_av = (AV *)SvRV (invoke);
		1733	len = av_len (invoke_av);
		1734
		1735	sv_setsv (cb, AvARRAY (invoke_av)[0]);
		1736
		1737	if (len > 0)
		1738	{
		1739	av_fill (defav, len - 1);
		1740	for (i = 0; i < len; ++i)
		1741	av_store (defav, i, SvREFCNT_inc (AvARRAY (invoke_av)[i + 1]));
		1742	}
		1743
		1744	SvREFCNT_dec (invoke);
		1745	}
		1746
		1747	void
		1748	_pool_2 (SV *cb)
		1749	CODE:
		1750	{
		1751	struct coro *coro = SvSTATE (coro_current);
		1752
		1753	sv_setsv (cb, &PL_sv_undef);
		1754
		1755	SvREFCNT_dec ((SV *)PL_defoutgv); PL_defoutgv = (GV *)coro->saved_deffh;
		1756	coro->saved_deffh = 0;
		1757
		1758	if (coro_rss (aTHX_ coro) > SvIV (sv_pool_rss)
		1759	|| av_len (av_async_pool) + 1 >= SvIV (sv_pool_size))
		1760	croak ("\3terminate\2\n");
		1761
		1762	av_clear (GvAV (PL_defgv));
		1763	hv_store ((HV *)SvRV (coro_current), "desc", sizeof ("desc") - 1,
		1764	newSVpvn ("[async_pool idle]", sizeof ("[async_pool idle]") - 1), 0);
		1765
		1766	coro->prio = 0;
		1767
		1768	if (coro->cctx && (coro->cctx->flags & CC_TRACE))
		1769	api_trace (coro_current, 0);
		1770
		1771	av_push (av_async_pool, newSVsv (coro_current));
		1772	}
		1773
		1774
1227	MODULE = Coro::State PACKAGE = Coro::AIO	1775	MODULE = Coro::State PACKAGE = Coro::AIO
1228		1776
1229	SV *	1777	SV *
1230	_get_state ()	1778	_get_state ()
1231	CODE:	1779	CODE:
1232	{	1780	{
1233	struct {	1781	struct io_state *data;
1234	int errorno;
1235	int laststype;
1236	int laststatval;
1237	Stat_t statcache;
1238	} data;
1239		1782
		1783	RETVAL = newSV (sizeof (struct io_state));
		1784	data = (struct io_state *)SvPVX (RETVAL);
		1785	SvCUR_set (RETVAL, sizeof (struct io_state));
		1786	SvPOK_only (RETVAL);
		1787
1240	data.errorno = errno;	1788	data->errorno = errno;
1241	data.laststype = PL_laststype;	1789	data->laststype = PL_laststype;
1242	data.laststatval = PL_laststatval;	1790	data->laststatval = PL_laststatval;
1243	data.statcache = PL_statcache;	1791	data->statcache = PL_statcache;
1244
1245	RETVAL = newSVpvn ((char *)&data, sizeof data);
1246	}	1792	}
1247	OUTPUT:	1793	OUTPUT:
1248	RETVAL	1794	RETVAL
1249		1795
1250	void	1796	void
1251	_set_state (char *data_)	1797	_set_state (char *data_)
1252	PROTOTYPE: $	1798	PROTOTYPE: $
1253	CODE:	1799	CODE:
1254	{	1800	{
1255	struct {	1801	struct io_state *data = (void *)data_;
1256	int errorno;
1257	int laststype;
1258	int laststatval;
1259	Stat_t statcache;
1260	} *data = (void *)data_;
1261		1802
1262	errno = data->errorno;	1803	errno = data->errorno;
1263	PL_laststype = data->laststype;	1804	PL_laststype = data->laststype;
1264	PL_laststatval = data->laststatval;	1805	PL_laststatval = data->laststatval;
1265	PL_statcache = data->statcache;	1806	PL_statcache = data->statcache;
1266	}	1807	}
		1808

Diff Legend

–	Removed lines
+	Added lines
<	Changed lines
>	Changed lines