[ViewVC] Diff of: cvs/Coro/Coro/State.xs

Comparing Coro/Coro/State.xs (file contents):
Revision 1.110 by root, Tue Nov 28 23:08:07 2006 UTC vs.
Revision 1.184 by root, Thu Oct 4 13:45:56 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	#if !__i386 && !__x86_64 && !__powerpc && !__m68k && !__alpha && !__mips && !__sparc64
		81	# undef CORO_STACKGUARD
		82	#endif
		83
		84	#ifndef CORO_STACKGUARD
		85	# define CORO_STACKGUARD 0
		86	#endif
		87
		88	/* prefer perl internal functions over our own? */
		89	#ifndef CORO_PREFER_PERL_FUNCTIONS
		90	# define CORO_PREFER_PERL_FUNCTIONS 0
		91	#endif
		92
		93	/* The next macros try to return the current stack pointer, in an as
		94	* portable way as possible. */
77	#define dSTACKLEVEL int stacklevel	95	#define dSTACKLEVEL volatile char stacklevel
78	#define STACKLEVEL ((void *)&stacklevel)	96	#define STACKLEVEL ((void *)&stacklevel)
79		97
80	#define IN_DESTRUCT (PL_main_cv == Nullcv)	98	#define IN_DESTRUCT (PL_main_cv == Nullcv)
81		99
82	#if __GNUC__ >= 3	100	#if __GNUC__ >= 3
83	# define attribute(x) __attribute__(x)	101	# define attribute(x) __attribute__(x)
		102	# define BARRIER __asm__ __volatile__ ("" : : : "memory")
84	#else	103	#else
85	# define attribute(x)	104	# define attribute(x)
		105	# define BARRIER
86	#endif	106	#endif
87		107
88	#define NOINLINE attribute ((noinline))	108	#define NOINLINE attribute ((noinline))
89		109
90	#include "CoroAPI.h"	110	#include "CoroAPI.h"
91
92	#define TRANSFER_SET_STACKLEVEL 0x8bfbfbfb /* magic cookie */
93		111
94	#ifdef USE_ITHREADS	112	#ifdef USE_ITHREADS
95	static perl_mutex coro_mutex;	113	static perl_mutex coro_mutex;
96	# define LOCK do { MUTEX_LOCK (&coro_mutex); } while (0)	114	# define LOCK do { MUTEX_LOCK (&coro_mutex); } while (0)
97	# define UNLOCK do { MUTEX_UNLOCK (&coro_mutex); } while (0)	115	# define UNLOCK do { MUTEX_UNLOCK (&coro_mutex); } while (0)
98	#else	116	#else
99	# define LOCK (void)0	117	# define LOCK (void)0
100	# define UNLOCK (void)0	118	# define UNLOCK (void)0
101	#endif	119	#endif
102		120
		121	/* helper storage struct for Coro::AIO */
		122	struct io_state
		123	{
		124	int errorno;
		125	I32 laststype;
		126	int laststatval;
		127	Stat_t statcache;
		128	};
		129
		130	static size_t coro_stacksize = CORO_STACKSIZE;
103	static struct CoroAPI coroapi;	131	static struct CoroAPI coroapi;
104	static AV main_mainstack; / used to differentiate between $main and others */	132	static AV main_mainstack; / used to differentiate between $main and others */
		133	static JMPENV *main_top_env;
105	static HV coro_state_stash, coro_stash;	134	static HV coro_state_stash, coro_stash;
106	static SV coro_mortal; / will be freed after next transfer */	135	static SV coro_mortal; / will be freed after next transfer */
107		136
		137	static GV irsgv; / $/ */
		138
		139	/* async_pool helper stuff */
		140	static SV *sv_pool_rss;
		141	static SV *sv_pool_size;
		142	static AV *av_async_pool;
		143
108	static struct coro_cctx *cctx_first;	144	static struct coro_cctx *cctx_first;
109	static int cctx_count, cctx_idle;	145	static int cctx_count, cctx_idle;
		146
		147	enum {
		148	CC_MAPPED = 0x01,
		149	CC_NOREUSE = 0x02, /* throw this away after tracing */
		150	CC_TRACE = 0x04,
		151	CC_TRACE_SUB = 0x08, /* trace sub calls */
		152	CC_TRACE_LINE = 0x10, /* trace each statement */
		153	CC_TRACE_ALL = CC_TRACE_SUB \| CC_TRACE_LINE,
		154	};
110		155
111	/* this is a structure representing a c-level coroutine */	156	/* this is a structure representing a c-level coroutine */
112	typedef struct coro_cctx {	157	typedef struct coro_cctx {
113	struct coro_cctx *next;	158	struct coro_cctx *next;
114		159
115	/* the stack */	160	/* the stack */
116	void *sptr;	161	void *sptr;
117	long ssize; /* positive == mmap, otherwise malloc */	162	size_t ssize;
118		163
119	/* cpu state */	164	/* cpu state */
120	void idle_sp; / sp of top-level transfer/schedule/cede call */	165	void idle_sp; / sp of top-level transfer/schedule/cede call */
		166	JMPENV idle_te; / same as idle_sp, but for top_env, TODO: remove once stable */
121	JMPENV *top_env;	167	JMPENV *top_env;
122	coro_context cctx;	168	coro_context cctx;
123		169
124	#if USE_VALGRIND	170	#if CORO_USE_VALGRIND
125	int valgrind_id;	171	int valgrind_id;
126	#endif	172	#endif
		173	unsigned char flags;
127	} coro_cctx;	174	} coro_cctx;
		175
		176	enum {
		177	CF_RUNNING = 0x0001, /* coroutine is running */
		178	CF_READY = 0x0002, /* coroutine is ready */
		179	CF_NEW = 0x0004, /* has never been switched to */
		180	CF_DESTROYED = 0x0008, /* coroutine data has been freed */
		181	};
128		182
129	/* this is a structure representing a perl-level coroutine */	183	/* this is a structure representing a perl-level coroutine */
130	struct coro {	184	struct coro {
131	/* the c coroutine allocated to this perl coroutine, if any */	185	/* the c coroutine allocated to this perl coroutine, if any */
132	coro_cctx *cctx;	186	coro_cctx *cctx;
133		187
134	/* data associated with this coroutine (initial args) */	188	/* data associated with this coroutine (initial args) */
135	AV *args;	189	AV *args;
136	int refcnt;	190	int refcnt;
		191	int flags; /* CF_ flags */
137		192
138	/* optionally saved, might be zero */	193	/* optionally saved, might be zero */
139	AV *defav;	194	AV defav; / @_ */
140	SV *defsv;	195	SV defsv; / $_ */
141	SV *errsv;	196	SV errsv; / $@ */
		197	SV deffh; / default filehandle */
		198	SV irssv; / $/ */
		199	SV irssv_sv; / real $/ cache */
142		200
143	#define VAR(name,type) type name;	201	#define VAR(name,type) type name;
144	# include "state.h"	202	# include "state.h"
145	#undef VAR	203	#undef VAR
146		204
		205	/* statistics */
		206	int usecount; /* number of transfers to this coro */
		207
147	/* coro process data */	208	/* coro process data */
148	int prio;	209	int prio;
		210	//SV *throw;
		211
		212	/* async_pool */
		213	SV *saved_deffh;
		214
		215	/* linked list */
		216	struct coro next, prev;
		217	HV hv; / the perl hash associated with this coro, if any */
149	};	218	};
150		219
151	typedef struct coro *Coro__State;	220	typedef struct coro *Coro__State;
152	typedef struct coro *Coro__State_or_hashref;	221	typedef struct coro *Coro__State_or_hashref;
153		222
		223	/ Coro ******************************************************************/
		224
		225	#define PRIO_MAX 3
		226	#define PRIO_HIGH 1
		227	#define PRIO_NORMAL 0
		228	#define PRIO_LOW -1
		229	#define PRIO_IDLE -3
		230	#define PRIO_MIN -4
		231
		232	/* for Coro.pm */
		233	static SV *coro_current;
		234	static AV *coro_ready [PRIO_MAX-PRIO_MIN+1];
		235	static int coro_nready;
		236	static struct coro *coro_first;
		237
		238	/ lowlevel stuff ********************************************************/
		239
154	static AV *	240	static AV *
155	coro_clone_padlist (CV *cv)	241	coro_clone_padlist (pTHX_ CV *cv)
156	{	242	{
157	AV *padlist = CvPADLIST (cv);	243	AV *padlist = CvPADLIST (cv);
158	AV newpadlist, newpad;	244	AV newpadlist, newpad;
159		245
160	newpadlist = newAV ();	246	newpadlist = newAV ();
…		…
172		258
173	return newpadlist;	259	return newpadlist;
174	}	260	}
175		261
176	static void	262	static void
177	free_padlist (AV *padlist)	263	free_padlist (pTHX_ AV *padlist)
178	{	264	{
179	/* may be during global destruction */	265	/* may be during global destruction */
180	if (SvREFCNT (padlist))	266	if (SvREFCNT (padlist))
181	{	267	{
182	I32 i = AvFILLp (padlist);	268	I32 i = AvFILLp (padlist);
…		…
203	AV *padlist;	289	AV *padlist;
204	AV av = (AV )mg->mg_obj;	290	AV av = (AV )mg->mg_obj;
205		291
206	/* casting is fun. */	292	/* casting is fun. */
207	while (&PL_sv_undef != (SV )(padlist = (AV )av_pop (av)))	293	while (&PL_sv_undef != (SV )(padlist = (AV )av_pop (av)))
208	free_padlist (padlist);	294	free_padlist (aTHX_ padlist);
209		295
210	SvREFCNT_dec (av);	296	SvREFCNT_dec (av);
211		297
212	return 0;	298	return 0;
213	}	299	}
…		…
221	? SvMAGIC (cv)->mg_type == PERL_MAGIC_coro \	307	? SvMAGIC (cv)->mg_type == PERL_MAGIC_coro \
222	? SvMAGIC (cv) \	308	? SvMAGIC (cv) \
223	: mg_find ((SV *)cv, PERL_MAGIC_coro) \	309	: mg_find ((SV *)cv, PERL_MAGIC_coro) \
224	: 0	310	: 0
225		311
		312	static struct coro *
		313	SvSTATE_ (pTHX_ SV *coro)
		314	{
		315	HV *stash;
		316	MAGIC *mg;
		317
		318	if (SvROK (coro))
		319	coro = SvRV (coro);
		320
		321	if (SvTYPE (coro) != SVt_PVHV)
		322	croak ("Coro::State object required");
		323
		324	stash = SvSTASH (coro);
		325	if (stash != coro_stash && stash != coro_state_stash)
		326	{
		327	/* very slow, but rare, check */
		328	if (!sv_derived_from (sv_2mortal (newRV_inc (coro)), "Coro::State"))
		329	croak ("Coro::State object required");
		330	}
		331
		332	mg = CORO_MAGIC (coro);
		333	return (struct coro *)mg->mg_ptr;
		334	}
		335
		336	#define SvSTATE(sv) SvSTATE_ (aTHX_ (sv))
		337
226	/* the next two functions merely cache the padlists */	338	/* the next two functions merely cache the padlists */
227	static void	339	static void
228	get_padlist (CV *cv)	340	get_padlist (pTHX_ CV *cv)
229	{	341	{
230	MAGIC *mg = CORO_MAGIC (cv);	342	MAGIC *mg = CORO_MAGIC (cv);
231	AV *av;	343	AV *av;
232		344
233	if (mg && AvFILLp ((av = (AV *)mg->mg_obj)) >= 0)	345	if (mg && AvFILLp ((av = (AV *)mg->mg_obj)) >= 0)
234	CvPADLIST (cv) = (AV *)AvARRAY (av)[AvFILLp (av)--];	346	CvPADLIST (cv) = (AV *)AvARRAY (av)[AvFILLp (av)--];
235	else	347	else
236	{	348	{
237	#if 0	349	#if CORO_PREFER_PERL_FUNCTIONS
238	/* this is probably cleaner, but also slower? */	350	/* this is probably cleaner, but also slower? */
239	CV *cp = Perl_cv_clone (cv);	351	CV *cp = Perl_cv_clone (cv);
240	CvPADLIST (cv) = CvPADLIST (cp);	352	CvPADLIST (cv) = CvPADLIST (cp);
241	CvPADLIST (cp) = 0;	353	CvPADLIST (cp) = 0;
242	SvREFCNT_dec (cp);	354	SvREFCNT_dec (cp);
243	#else	355	#else
244	CvPADLIST (cv) = coro_clone_padlist (cv);	356	CvPADLIST (cv) = coro_clone_padlist (aTHX_ cv);
245	#endif	357	#endif
246	}	358	}
247	}	359	}
248		360
249	static void	361	static void
250	put_padlist (CV *cv)	362	put_padlist (pTHX_ CV *cv)
251	{	363	{
252	MAGIC *mg = CORO_MAGIC (cv);	364	MAGIC *mg = CORO_MAGIC (cv);
253	AV *av;	365	AV *av;
254		366
255	if (!mg)	367	if (!mg)
…		…
266	av_extend (av, AvMAX (av) + 1);	378	av_extend (av, AvMAX (av) + 1);
267		379
268	AvARRAY (av)[++AvFILLp (av)] = (SV *)CvPADLIST (cv);	380	AvARRAY (av)[++AvFILLp (av)] = (SV *)CvPADLIST (cv);
269	}	381	}
270		382
271	#define SB do {	383	/ load & save, init *****************************************************/
272	#define SE } while (0)
273		384
274	#define LOAD(state) load_state((state));
275	#define SAVE(state,flags) save_state((state),(flags));
276
277	#define REPLACE_SV(sv,val) SB SvREFCNT_dec(sv); (sv) = (val); (val) = 0; SE
278
279	static void	385	static void
280	load_state(Coro__State c)	386	load_perl (pTHX_ Coro__State c)
281	{	387	{
282	#define VAR(name,type) PL_ ## name = c->name;	388	#define VAR(name,type) PL_ ## name = c->name;
283	# include "state.h"	389	# include "state.h"
284	#undef VAR	390	#undef VAR
285		391
286	if (c->defav) REPLACE_SV (GvAV (PL_defgv), c->defav);	392	GvSV (PL_defgv) = c->defsv;
287	if (c->defsv) REPLACE_SV (DEFSV , c->defsv);	393	GvAV (PL_defgv) = c->defav;
288	if (c->errsv) REPLACE_SV (ERRSV , c->errsv);	394	GvSV (PL_errgv) = c->errsv;
		395	GvSV (irsgv) = c->irssv_sv;
289		396
290	{	397	{
291	dSP;	398	dSP;
292	CV *cv;	399	CV *cv;
293		400
294	/* now do the ugly restore mess */	401	/* now do the ugly restore mess */
295	while ((cv = (CV *)POPs))	402	while ((cv = (CV *)POPs))
296	{	403	{
297	put_padlist (cv); /* mark this padlist as available */	404	put_padlist (aTHX_ cv); /* mark this padlist as available */
298	CvDEPTH (cv) = PTR2IV (POPs);	405	CvDEPTH (cv) = PTR2IV (POPs);
299	CvPADLIST (cv) = (AV *)POPs;	406	CvPADLIST (cv) = (AV *)POPs;
300	}	407	}
301		408
302	PUTBACK;	409	PUTBACK;
303	}	410	}
304	}	411	}
305		412
306	static void	413	static void
307	save_state(Coro__State c, int flags)	414	save_perl (pTHX_ Coro__State c)
308	{	415	{
309	{	416	{
310	dSP;	417	dSP;
311	I32 cxix = cxstack_ix;	418	I32 cxix = cxstack_ix;
312	PERL_CONTEXT *ccstk = cxstack;	419	PERL_CONTEXT *ccstk = cxstack;
…		…
315	/*	422	/*
316	* the worst thing you can imagine happens first - we have to save	423	* the worst thing you can imagine happens first - we have to save
317	* (and reinitialize) all cv's in the whole callchain :(	424	* (and reinitialize) all cv's in the whole callchain :(
318	*/	425	*/
319		426
320	PUSHs (Nullsv);	427	XPUSHs (Nullsv);
321	/* this loop was inspired by pp_caller */	428	/* this loop was inspired by pp_caller */
322	for (;;)	429	for (;;)
323	{	430	{
324	while (cxix >= 0)	431	while (cxix >= 0)
325	{	432	{
326	PERL_CONTEXT *cx = &ccstk[cxix--];	433	PERL_CONTEXT *cx = &ccstk[cxix--];
327		434
328	if (CxTYPE(cx) == CXt_SUB)	435	if (CxTYPE (cx) == CXt_SUB \|\| CxTYPE (cx) == CXt_FORMAT)
329	{	436	{
330	CV *cv = cx->blk_sub.cv;	437	CV *cv = cx->blk_sub.cv;
331		438
332	if (CvDEPTH (cv))	439	if (CvDEPTH (cv))
333	{	440	{
334	EXTEND (SP, 3);	441	EXTEND (SP, 3);
335
336	PUSHs ((SV *)CvPADLIST(cv));	442	PUSHs ((SV *)CvPADLIST (cv));
337	PUSHs (INT2PTR (SV *, CvDEPTH (cv)));	443	PUSHs (INT2PTR (SV *, CvDEPTH (cv)));
338	PUSHs ((SV *)cv);	444	PUSHs ((SV *)cv);
339		445
340	CvDEPTH (cv) = 0;	446	CvDEPTH (cv) = 0;
341	get_padlist (cv);	447	get_padlist (aTHX_ cv);
342	}	448	}
343	}	449	}
344	#ifdef CXt_FORMAT
345	else if (CxTYPE(cx) == CXt_FORMAT)
346	{
347	/* I never used formats, so how should I know how these are implemented? */
348	/* my bold guess is as a simple, plain sub... */
349	croak ("CXt_FORMAT not yet handled. Don't switch coroutines from within formats");
350	}
351	#endif
352	}	450	}
353		451
354	if (top_si->si_type == PERLSI_MAIN)	452	if (top_si->si_type == PERLSI_MAIN)
355	break;	453	break;
356		454
357	top_si = top_si->si_prev;	455	top_si = top_si->si_prev;
358	ccstk = top_si->si_cxstack;	456	ccstk = top_si->si_cxstack;
359	cxix = top_si->si_cxix;	457	cxix = top_si->si_cxix;
360	}	458	}
361		459
362	PUTBACK;	460	PUTBACK;
363	}	461	}
364		462
365	c->defav = flags & TRANSFER_SAVE_DEFAV ? (AV *)SvREFCNT_inc (GvAV (PL_defgv)) : 0;	463	c->defav = GvAV (PL_defgv);
366	c->defsv = flags & TRANSFER_SAVE_DEFSV ? SvREFCNT_inc (DEFSV) : 0;	464	c->defsv = DEFSV;
367	c->errsv = flags & TRANSFER_SAVE_ERRSV ? SvREFCNT_inc (ERRSV) : 0;	465	c->errsv = ERRSV;
		466	c->irssv_sv = GvSV (irsgv);
368		467
369	#define VAR(name,type)c->name = PL_ ## name;	468	#define VAR(name,type)c->name = PL_ ## name;
370	# include "state.h"	469	# include "state.h"
371	#undef VAR	470	#undef VAR
372	}	471	}
…		…
375	* allocate various perl stacks. This is an exact copy	474	* allocate various perl stacks. This is an exact copy
376	* of perl.c:init_stacks, except that it uses less memory	475	* of perl.c:init_stacks, except that it uses less memory
377	* on the (sometimes correct) assumption that coroutines do	476	* on the (sometimes correct) assumption that coroutines do
378	* not usually need a lot of stackspace.	477	* not usually need a lot of stackspace.
379	*/	478	*/
		479	#if CORO_PREFER_PERL_FUNCTIONS
		480	# define coro_init_stacks init_stacks
		481	#else
380	static void	482	static void
381	coro_init_stacks ()	483	coro_init_stacks (pTHX)
382	{	484	{
383	PL_curstackinfo = new_stackinfo(96, 1024/sizeof(PERL_CONTEXT) - 1);	485	PL_curstackinfo = new_stackinfo(64, 6);
384	PL_curstackinfo->si_type = PERLSI_MAIN;	486	PL_curstackinfo->si_type = PERLSI_MAIN;
385	PL_curstack = PL_curstackinfo->si_stack;	487	PL_curstack = PL_curstackinfo->si_stack;
386	PL_mainstack = PL_curstack; /* remember in case we switch stacks */	488	PL_mainstack = PL_curstack; /* remember in case we switch stacks */
387		489
388	PL_stack_base = AvARRAY(PL_curstack);	490	PL_stack_base = AvARRAY(PL_curstack);
389	PL_stack_sp = PL_stack_base;	491	PL_stack_sp = PL_stack_base;
390	PL_stack_max = PL_stack_base + AvMAX(PL_curstack);	492	PL_stack_max = PL_stack_base + AvMAX(PL_curstack);
391		493
392	New(50,PL_tmps_stack,96,SV*);	494	New(50,PL_tmps_stack,64,SV*);
393	PL_tmps_floor = -1;	495	PL_tmps_floor = -1;
394	PL_tmps_ix = -1;	496	PL_tmps_ix = -1;
395	PL_tmps_max = 96;	497	PL_tmps_max = 64;
396		498
397	New(54,PL_markstack,16,I32);	499	New(54,PL_markstack,16,I32);
398	PL_markstack_ptr = PL_markstack;	500	PL_markstack_ptr = PL_markstack;
399	PL_markstack_max = PL_markstack + 16;	501	PL_markstack_max = PL_markstack + 16;
400		502
…		…
404		506
405	New(54,PL_scopestack,16,I32);	507	New(54,PL_scopestack,16,I32);
406	PL_scopestack_ix = 0;	508	PL_scopestack_ix = 0;
407	PL_scopestack_max = 16;	509	PL_scopestack_max = 16;
408		510
409	New(54,PL_savestack,96,ANY);	511	New(54,PL_savestack,64,ANY);
410	PL_savestack_ix = 0;	512	PL_savestack_ix = 0;
411	PL_savestack_max = 96;	513	PL_savestack_max = 64;
412		514
413	#if !PERL_VERSION_ATLEAST (5,9,0)	515	#if !PERL_VERSION_ATLEAST (5,9,0)
414	New(54,PL_retstack,8,OP*);	516	New(54,PL_retstack,4,OP*);
415	PL_retstack_ix = 0;	517	PL_retstack_ix = 0;
416	PL_retstack_max = 8;	518	PL_retstack_max = 4;
417	#endif	519	#endif
418	}	520	}
		521	#endif
419		522
420	/*	523	/*
421	* destroy the stacks, the callchain etc...	524	* destroy the stacks, the callchain etc...
422	*/	525	*/
423	static void	526	static void
424	coro_destroy_stacks ()	527	coro_destroy_stacks (pTHX)
425	{	528	{
426	if (!IN_DESTRUCT)
427	{
428	/* is this ugly, I ask? */
429	LEAVE_SCOPE (0);
430
431	/* sure it is, but more important: is it correct?? :/ */
432	FREETMPS;
433
434	/POPSTACK_TO (PL_mainstack);//D//use/
435	}
436
437	while (PL_curstackinfo->si_next)	529	while (PL_curstackinfo->si_next)
438	PL_curstackinfo = PL_curstackinfo->si_next;	530	PL_curstackinfo = PL_curstackinfo->si_next;
439		531
440	while (PL_curstackinfo)	532	while (PL_curstackinfo)
441	{	533	{
442	PERL_SI *p = PL_curstackinfo->si_prev;	534	PERL_SI *p = PL_curstackinfo->si_prev;
443		535
444	{ /D//remove/
445	dSP;
446	SWITCHSTACK (PL_curstack, PL_curstackinfo->si_stack);
447	PUTBACK; /* possibly superfluous */
448	}
449
450	if (!IN_DESTRUCT)	536	if (!IN_DESTRUCT)
451	{
452	dounwind (-1);/D//remove/
453	SvREFCNT_dec (PL_curstackinfo->si_stack);	537	SvREFCNT_dec (PL_curstackinfo->si_stack);
454	}
455		538
456	Safefree (PL_curstackinfo->si_cxstack);	539	Safefree (PL_curstackinfo->si_cxstack);
457	Safefree (PL_curstackinfo);	540	Safefree (PL_curstackinfo);
458	PL_curstackinfo = p;	541	PL_curstackinfo = p;
459	}	542	}
…		…
465	#if !PERL_VERSION_ATLEAST (5,9,0)	548	#if !PERL_VERSION_ATLEAST (5,9,0)
466	Safefree (PL_retstack);	549	Safefree (PL_retstack);
467	#endif	550	#endif
468	}	551	}
469		552
470	static void	553	static size_t
471	setup_coro (struct coro *coro)	554	coro_rss (pTHX_ struct coro *coro)
		555	{
		556	size_t rss = sizeof (*coro);
		557
		558	if (coro->mainstack)
		559	{
		560	if (coro->flags & CF_RUNNING)
		561	{
		562	#define VAR(name,type)coro->name = PL_ ## name;
		563	# include "state.h"
		564	#undef VAR
		565	}
		566
		567	rss += sizeof (coro->curstackinfo);
		568	rss += sizeof (struct xpvav) + (1 + AvFILL (coro->curstackinfo->si_stack)) * sizeof (SV *);
		569	rss += (coro->curstackinfo->si_cxmax + 1) * sizeof (PERL_CONTEXT);
		570	rss += sizeof (struct xpvav) + (1 + AvFILL (coro->curstack)) * sizeof (SV *);
		571	rss += coro->tmps_max * sizeof (SV *);
		572	rss += (coro->markstack_max - coro->markstack_ptr) * sizeof (I32);
		573	rss += coro->scopestack_max * sizeof (I32);
		574	rss += coro->savestack_max * sizeof (ANY);
		575
		576	#if !PERL_VERSION_ATLEAST (5,9,0)
		577	rss += coro->retstack_max * sizeof (OP *);
		578	#endif
		579	}
		580
		581	return rss;
		582	}
		583
		584	/ coroutine stack handling **********************************************/
		585
		586	static void
		587	coro_setup (pTHX_ struct coro *coro)
472	{	588	{
473	/*	589	/*
474	* emulate part of the perl startup here.	590	* emulate part of the perl startup here.
475	*/	591	*/
476
477	coro_init_stacks ();	592	coro_init_stacks (aTHX);
478		593
		594	PL_runops = RUNOPS_DEFAULT;
		595	PL_curcop = &PL_compiling;
		596	PL_in_eval = EVAL_NULL;
479	PL_curcop = 0;	597	PL_comppad = 0;
480	PL_in_eval = 0;
481	PL_curpm = 0;	598	PL_curpm = 0;
		599	PL_localizing = 0;
		600	PL_dirty = 0;
		601	PL_restartop = 0;
		602
		603	GvSV (PL_defgv) = NEWSV (0, 0);
		604	GvAV (PL_defgv) = coro->args; coro->args = 0;
		605	GvSV (PL_errgv) = NEWSV (0, 0);
		606	GvSV (irsgv) = newSVpvn ("\n", 1); sv_magic (GvSV (irsgv), (SV *)irsgv, PERL_MAGIC_sv, "/", 0);
		607	PL_rs = newSVsv (GvSV (irsgv));
		608
		609	{
		610	IO *io = newIO ();
		611	PL_defoutgv = newGVgen ("Coro");
		612	GvIOp(PL_defoutgv) = io;
		613	IoTYPE (io) = IoTYPE_WRONLY;
		614	IoOFP (io) = IoIFP (io) = PerlIO_stdout ();
		615	IoFLAGS (io) \|= IOf_FLUSH;
		616	}
482		617
483	{	618	{
484	dSP;	619	dSP;
485	LOGOP myop;	620	LOGOP myop;
486		621
487	/* I have no idea why this is needed, but it is */
488	PUSHMARK (SP);
489
490	SvREFCNT_dec (GvAV (PL_defgv));
491	GvAV (PL_defgv) = coro->args; coro->args = 0;
492
493	Zero (&myop, 1, LOGOP);	622	Zero (&myop, 1, LOGOP);
494	myop.op_next = Nullop;	623	myop.op_next = Nullop;
495	myop.op_flags = OPf_WANT_VOID;	624	myop.op_flags = OPf_WANT_VOID;
496		625
		626	PUSHMARK (SP);
		627	XPUSHs (av_shift (GvAV (PL_defgv)));
		628	PUTBACK;
497	PL_op = (OP *)&myop;	629	PL_op = (OP *)&myop;
498
499	PUSHMARK (SP);
500	XPUSHs ((SV *)get_cv ("Coro::State::_coro_init", FALSE));
501	PUTBACK;
502	PL_op = PL_ppaddr[OP_ENTERSUB](aTHX);	630	PL_op = PL_ppaddr[OP_ENTERSUB](aTHX);
503	SPAGAIN;	631	SPAGAIN;
504
505	ENTER; /* necessary e.g. for dounwind */
506	}	632	}
507	}
508		633
		634	ENTER; /* necessary e.g. for dounwind */
		635	}
		636
509	static void	637	static void
		638	coro_destroy (pTHX_ struct coro *coro)
		639	{
		640	if (!IN_DESTRUCT)
		641	{
		642	/* restore all saved variables and stuff */
		643	LEAVE_SCOPE (0);
		644	assert (PL_tmps_floor == -1);
		645
		646	/* free all temporaries */
		647	FREETMPS;
		648	assert (PL_tmps_ix == -1);
		649
		650	/* unwind all extra stacks */
		651	POPSTACK_TO (PL_mainstack);
		652
		653	/* unwind main stack */
		654	dounwind (-1);
		655	}
		656
		657	SvREFCNT_dec (GvSV (PL_defgv));
		658	SvREFCNT_dec (GvAV (PL_defgv));
		659	SvREFCNT_dec (GvSV (PL_errgv));
		660	SvREFCNT_dec (PL_defoutgv);
		661	SvREFCNT_dec (PL_rs);
		662	SvREFCNT_dec (GvSV (irsgv));
		663
		664	SvREFCNT_dec (coro->saved_deffh);
		665	//SvREFCNT_dec (coro->throw);
		666
		667	coro_destroy_stacks (aTHX);
		668	}
		669
		670	static void
510	free_coro_mortal ()	671	free_coro_mortal (pTHX)
511	{	672	{
512	if (coro_mortal)	673	if (coro_mortal)
513	{	674	{
514	SvREFCNT_dec (coro_mortal);	675	SvREFCNT_dec (coro_mortal);
515	coro_mortal = 0;	676	coro_mortal = 0;
516	}	677	}
517	}	678	}
518		679
		680	static int
		681	runops_trace (pTHX)
		682	{
		683	COP *oldcop = 0;
		684	int oldcxix = -2;
		685	struct coro coro = SvSTATE (coro_current); / trace cctx is tied to specific coro */
		686	coro_cctx *cctx = coro->cctx;
		687
		688	while ((PL_op = CALL_FPTR (PL_op->op_ppaddr) (aTHX)))
		689	{
		690	PERL_ASYNC_CHECK ();
		691
		692	if (cctx->flags & CC_TRACE_ALL)
		693	{
		694	if (PL_op->op_type == OP_LEAVESUB && cctx->flags & CC_TRACE_SUB)
		695	{
		696	PERL_CONTEXT *cx = &cxstack[cxstack_ix];
		697	SV bot, top;
		698	AV av = newAV (); / return values */
		699	SV **cb;
		700	dSP;
		701
		702	GV *gv = CvGV (cx->blk_sub.cv);
		703	SV *fullname = sv_2mortal (newSV (0));
		704	if (isGV (gv))
		705	gv_efullname3 (fullname, gv, 0);
		706
		707	bot = PL_stack_base + cx->blk_oldsp + 1;
		708	top = cx->blk_gimme == G_ARRAY ? SP + 1
		709	: cx->blk_gimme == G_SCALAR ? bot + 1
		710	: bot;
		711
		712	while (bot < top)
		713	av_push (av, SvREFCNT_inc (*bot++));
		714
		715	PL_runops = RUNOPS_DEFAULT;
		716	ENTER;
		717	SAVETMPS;
		718	EXTEND (SP, 3);
		719	PUSHMARK (SP);
		720	PUSHs (&PL_sv_no);
		721	PUSHs (fullname);
		722	PUSHs (sv_2mortal (newRV_noinc ((SV *)av)));
		723	PUTBACK;
		724	cb = hv_fetch ((HV *)SvRV (coro_current), "_trace_sub_cb", sizeof ("_trace_sub_cb") - 1, 0);
		725	if (cb) call_sv (*cb, G_KEEPERR \| G_EVAL \| G_VOID \| G_DISCARD);
		726	SPAGAIN;
		727	FREETMPS;
		728	LEAVE;
		729	PL_runops = runops_trace;
		730	}
		731
		732	if (oldcop != PL_curcop)
		733	{
		734	oldcop = PL_curcop;
		735
		736	if (PL_curcop != &PL_compiling)
		737	{
		738	SV **cb;
		739
		740	if (oldcxix != cxstack_ix && cctx->flags & CC_TRACE_SUB)
		741	{
		742	PERL_CONTEXT *cx = &cxstack[cxstack_ix];
		743
		744	if (CxTYPE (cx) == CXt_SUB && oldcxix < cxstack_ix)
		745	{
		746	runops_proc_t old_runops = PL_runops;
		747	dSP;
		748	GV *gv = CvGV (cx->blk_sub.cv);
		749	SV *fullname = sv_2mortal (newSV (0));
		750
		751	if (isGV (gv))
		752	gv_efullname3 (fullname, gv, 0);
		753
		754	PL_runops = RUNOPS_DEFAULT;
		755	ENTER;
		756	SAVETMPS;
		757	EXTEND (SP, 3);
		758	PUSHMARK (SP);
		759	PUSHs (&PL_sv_yes);
		760	PUSHs (fullname);
		761	PUSHs (cx->blk_sub.hasargs ? sv_2mortal (newRV_inc ((SV *)cx->blk_sub.argarray)) : &PL_sv_undef);
		762	PUTBACK;
		763	cb = hv_fetch ((HV *)SvRV (coro_current), "_trace_sub_cb", sizeof ("_trace_sub_cb") - 1, 0);
		764	if (cb) call_sv (*cb, G_KEEPERR \| G_EVAL \| G_VOID \| G_DISCARD);
		765	SPAGAIN;
		766	FREETMPS;
		767	LEAVE;
		768	PL_runops = runops_trace;
		769	}
		770
		771	oldcxix = cxstack_ix;
		772	}
		773
		774	if (cctx->flags & CC_TRACE_LINE)
		775	{
		776	dSP;
		777
		778	PL_runops = RUNOPS_DEFAULT;
		779	ENTER;
		780	SAVETMPS;
		781	EXTEND (SP, 3);
		782	PL_runops = RUNOPS_DEFAULT;
		783	PUSHMARK (SP);
		784	PUSHs (sv_2mortal (newSVpv (OutCopFILE (oldcop), 0)));
		785	PUSHs (sv_2mortal (newSViv (CopLINE (oldcop))));
		786	PUTBACK;
		787	cb = hv_fetch ((HV *)SvRV (coro_current), "_trace_line_cb", sizeof ("_trace_line_cb") - 1, 0);
		788	if (cb) call_sv (*cb, G_KEEPERR \| G_EVAL \| G_VOID \| G_DISCARD);
		789	SPAGAIN;
		790	FREETMPS;
		791	LEAVE;
		792	PL_runops = runops_trace;
		793	}
		794	}
		795	}
		796	}
		797	}
		798
		799	TAINT_NOT;
		800	return 0;
		801	}
		802
		803	/* inject a fake call to Coro::State::_cctx_init into the execution */
		804	/* _cctx_init should be careful, as it could be called at almost any time */
		805	/* during execution of a perl program */
519	static void NOINLINE	806	static void NOINLINE
520	prepare_cctx (coro_cctx *cctx)	807	prepare_cctx (pTHX_ coro_cctx *cctx)
521	{	808	{
522	dSP;	809	dSP;
523	LOGOP myop;	810	LOGOP myop;
524		811
		812	PL_top_env = &PL_start_env;
		813
		814	if (cctx->flags & CC_TRACE)
		815	PL_runops = runops_trace;
		816
525	Zero (&myop, 1, LOGOP);	817	Zero (&myop, 1, LOGOP);
526	myop.op_next = PL_op;	818	myop.op_next = PL_op;
527	myop.op_flags = OPf_WANT_VOID;	819	myop.op_flags = OPf_WANT_VOID \| OPf_STACKED;
528
529	sv_setiv (get_sv ("Coro::State::_cctx", FALSE), PTR2IV (cctx));
530		820
531	PUSHMARK (SP);	821	PUSHMARK (SP);
		822	EXTEND (SP, 2);
		823	PUSHs (sv_2mortal (newSViv (PTR2IV (cctx))));
532	XPUSHs ((SV *)get_cv ("Coro::State::_cctx_init", FALSE));	824	PUSHs ((SV *)get_cv ("Coro::State::_cctx_init", FALSE));
533	PUTBACK;	825	PUTBACK;
		826	PL_op = (OP *)&myop;
534	PL_restartop = PL_ppaddr[OP_ENTERSUB](aTHX);	827	PL_op = PL_ppaddr[OP_ENTERSUB](aTHX);
535	SPAGAIN;	828	SPAGAIN;
536	}	829	}
537		830
		831	/*
		832	* this is a _very_ stripped down perl interpreter ;)
		833	*/
538	static void	834	static void
539	coro_run (void *arg)	835	coro_run (void *arg)
540	{	836	{
		837	dTHX;
		838
541	/* coro_run is the alternative epilogue of transfer() */	839	/* coro_run is the alternative tail of transfer(), so unlock here. */
542	UNLOCK;	840	UNLOCK;
543		841
		842	/* we now skip the entersub that lead to transfer() */
		843	PL_op = PL_op->op_next;
		844
		845	/* inject a fake subroutine call to cctx_init */
		846	prepare_cctx (aTHX_ (coro_cctx *)arg);
		847
		848	/* somebody or something will hit me for both perl_run and PL_restartop */
		849	PL_restartop = PL_op;
		850	perl_run (PL_curinterp);
		851
544	/*	852	/*
545	* this is a _very_ stripped down perl interpreter ;)	853	* If perl-run returns we assume exit() was being called or the coro
		854	* fell off the end, which seems to be the only valid (non-bug)
		855	* reason for perl_run to return. We try to exit by jumping to the
		856	* bootstrap-time "top" top_env, as we cannot restore the "main"
		857	* coroutine as Coro has no such concept
546	*/	858	*/
547	PL_top_env = &PL_start_env;	859	PL_top_env = main_top_env;
548		860	JMPENV_JUMP (2); /* I do not feel well about the hardcoded 2 at all */
549	/* inject call to cctx_init */
550	prepare_cctx ((coro_cctx *)arg);
551
552	/* somebody will hit me for both perl_run and PL_restartop */
553	perl_run (PL_curinterp);
554
555	fputs ("FATAL: C coroutine fell over the edge of the world, aborting. Did you call exit in a coroutine?\n", stderr);
556	abort ();
557	}	861	}
558		862
559	static coro_cctx *	863	static coro_cctx *
560	cctx_new ()	864	cctx_new ()
561	{	865	{
562	coro_cctx *cctx;	866	coro_cctx *cctx;
		867	void *stack_start;
		868	size_t stack_size;
563		869
564	++cctx_count;	870	++cctx_count;
565		871
566	New (0, cctx, 1, coro_cctx);	872	Newz (0, cctx, 1, coro_cctx);
567		873
568	#if HAVE_MMAP	874	#if HAVE_MMAP
569		875
570	cctx->ssize = ((STACKSIZE * sizeof (long) + PAGESIZE - 1) / PAGESIZE + STACKGUARD) * PAGESIZE;	876	cctx->ssize = ((coro_stacksize * sizeof (long) + PAGESIZE - 1) / PAGESIZE + CORO_STACKGUARD) * PAGESIZE;
571	/* mmap suppsedly does allocate-on-write for us */	877	/* mmap supposedly does allocate-on-write for us */
572	cctx->sptr = mmap (0, cctx->ssize, PROT_EXEC\|PROT_READ\|PROT_WRITE, MAP_PRIVATE\|MAP_ANONYMOUS, 0, 0);	878	cctx->sptr = mmap (0, cctx->ssize, PROT_EXEC\|PROT_READ\|PROT_WRITE, MAP_PRIVATE\|MAP_ANONYMOUS, 0, 0);
573		879
574	if (cctx->sptr == (void *)-1)	880	if (cctx->sptr != (void *)-1)
575	{
576	perror ("FATAL: unable to mmap stack for coroutine");
577	_exit (EXIT_FAILURE);
578	}	881	{
579
580	# if STACKGUARD	882	# if CORO_STACKGUARD
581	mprotect (cctx->sptr, STACKGUARD * PAGESIZE, PROT_NONE);	883	mprotect (cctx->sptr, CORO_STACKGUARD * PAGESIZE, PROT_NONE);
582	# endif	884	# endif
		885	stack_start = CORO_STACKGUARD * PAGESIZE + (char *)cctx->sptr;
		886	stack_size = cctx->ssize - CORO_STACKGUARD * PAGESIZE;
		887	cctx->flags \|= CC_MAPPED;
		888	}
		889	else
		890	#endif
		891	{
		892	cctx->ssize = coro_stacksize * (long)sizeof (long);
		893	New (0, cctx->sptr, coro_stacksize, long);
583		894
584	#else
585
586	cctx->ssize = STACKSIZE * (long)sizeof (long);
587	New (0, cctx->sptr, STACKSIZE, long);
588
589	if (!cctx->sptr)	895	if (!cctx->sptr)
590	{	896	{
591	perror ("FATAL: unable to malloc stack for coroutine");	897	perror ("FATAL: unable to allocate stack for coroutine");
592	_exit (EXIT_FAILURE);	898	_exit (EXIT_FAILURE);
593	}	899	}
594		900
595	#endif	901	stack_start = cctx->sptr;
		902	stack_size = cctx->ssize;
		903	}
596		904
597	#if USE_VALGRIND	905	REGISTER_STACK (cctx, (char )stack_start, (char )stack_start + stack_size);
598	cctx->valgrind_id = VALGRIND_STACK_REGISTER (
599	STACKGUARD * PAGESIZE + (char *)cctx->sptr,
600	cctx->ssize + (char *)cctx->sptr
601	);
602	#endif
603
604	coro_create (&cctx->cctx, coro_run, (void *)cctx, cctx->sptr, cctx->ssize);	906	coro_create (&cctx->cctx, coro_run, (void *)cctx, stack_start, stack_size);
605		907
606	return cctx;	908	return cctx;
607	}	909	}
608		910
609	static void	911	static void
610	cctx_free (coro_cctx *cctx)	912	cctx_destroy (coro_cctx *cctx)
611	{	913	{
612	if (!cctx)	914	if (!cctx)
613	return;	915	return;
614		916
615	--cctx_count;	917	--cctx_count;
616		918
617	#if USE_VALGRIND	919	#if CORO_USE_VALGRIND
618	VALGRIND_STACK_DEREGISTER (cctx->valgrind_id);	920	VALGRIND_STACK_DEREGISTER (cctx->valgrind_id);
619	#endif	921	#endif
620		922
621	#if HAVE_MMAP	923	#if HAVE_MMAP
		924	if (cctx->flags & CC_MAPPED)
622	munmap (cctx->sptr, cctx->ssize);	925	munmap (cctx->sptr, cctx->ssize);
623	#else	926	else
		927	#endif
624	Safefree (cctx->sptr);	928	Safefree (cctx->sptr);
625	#endif
626		929
627	Safefree (cctx);	930	Safefree (cctx);
628	}	931	}
629		932
630	static coro_cctx *	933	static coro_cctx *
631	cctx_get ()	934	cctx_get (pTHX)
632	{	935	{
633	coro_cctx *cctx;
634
635	if (cctx_first)	936	while (cctx_first)
636	{	937	{
		938	coro_cctx *cctx = cctx_first;
		939	cctx_first = cctx->next;
637	--cctx_idle;	940	--cctx_idle;
638	cctx = cctx_first;	941
639	cctx_first = cctx->next;	942	if (cctx->ssize >= coro_stacksize && !(cctx->flags & CC_NOREUSE))
640	}	943	return cctx;
641	else	944
642	{	945	cctx_destroy (cctx);
643	cctx = cctx_new ();
644	PL_op = PL_op->op_next;
645	}	946	}
646		947
647	return cctx;	948	return cctx_new ();
648	}	949	}
649		950
650	static void	951	static void
651	cctx_put (coro_cctx *cctx)	952	cctx_put (coro_cctx *cctx)
652	{	953	{
		954	/* free another cctx if overlimit */
		955	if (cctx_idle >= MAX_IDLE_CCTX)
		956	{
		957	coro_cctx *first = cctx_first;
		958	cctx_first = first->next;
		959	--cctx_idle;
		960
		961	cctx_destroy (first);
		962	}
		963
653	++cctx_idle;	964	++cctx_idle;
654	cctx->next = cctx_first;	965	cctx->next = cctx_first;
655	cctx_first = cctx;	966	cctx_first = cctx;
656	}	967	}
657		968
658	/* never call directly, always through the coro_state_transfer global variable */	969	/ coroutine switching ***************************************************/
		970
659	static void NOINLINE	971	static void NOINLINE
		972	transfer_check (pTHX_ struct coro prev, struct coro next)
		973	{
		974	if (prev != next)
		975	{
		976	if (!(prev->flags & (CF_RUNNING \| CF_NEW)))
		977	croak ("Coro::State::transfer called with non-running/new prev Coro::State, but can only transfer from running or new states");
		978
		979	if (next->flags & CF_RUNNING)
		980	croak ("Coro::State::transfer called with running next Coro::State, but can only transfer to inactive states");
		981
		982	if (next->flags & CF_DESTROYED)
		983	croak ("Coro::State::transfer called with destroyed next Coro::State, but can only transfer to inactive states");
		984
		985	if (PL_lex_state != LEX_NOTPARSING)
		986	croak ("Coro::State::transfer called while parsing, but this is not supported");
		987	}
		988	}
		989
		990	/* always use the TRANSFER macro */
		991	static void NOINLINE
660	transfer (struct coro prev, struct coro next, int flags)	992	transfer (pTHX_ struct coro prev, struct coro next)
661	{	993	{
662	dSTACKLEVEL;	994	dSTACKLEVEL;
663		995
664	/* sometimes transfer is only called to set idle_sp */	996	/* sometimes transfer is only called to set idle_sp */
665	if (flags == TRANSFER_SET_STACKLEVEL)	997	if (!next)
		998	{
666	((coro_cctx *)prev)->idle_sp = STACKLEVEL;	999	((coro_cctx *)prev)->idle_sp = STACKLEVEL;
		1000	assert (((coro_cctx )prev)->idle_te = PL_top_env); / just for the side-effect when asserts are enabled */
		1001	}
667	else if (prev != next)	1002	else if (prev != next)
668	{	1003	{
669	coro_cctx *prev__cctx;	1004	coro_cctx *prev__cctx;
670		1005
		1006	if (prev->flags & CF_NEW)
		1007	{
		1008	/* create a new empty context */
		1009	Newz (0, prev->cctx, 1, coro_cctx);
		1010	prev->flags &= ~CF_NEW;
		1011	prev->flags \|= CF_RUNNING;
		1012	}
		1013
		1014	prev->flags &= ~CF_RUNNING;
		1015	next->flags \|= CF_RUNNING;
		1016
671	LOCK;	1017	LOCK;
672		1018
673	if (next->mainstack)	1019	if (next->flags & CF_NEW)
674	{	1020	{
675	/* coroutine already started */	1021	/* need to start coroutine */
676	SAVE (prev, flags);	1022	next->flags &= ~CF_NEW;
677	LOAD (next);	1023	/* first get rid of the old state */
		1024	save_perl (aTHX_ prev);
		1025	/* setup coroutine call */
		1026	coro_setup (aTHX_ next);
678	}	1027	}
679	else	1028	else
680	{	1029	{
681	/* need to start coroutine */	1030	/* coroutine already started */
682	/* first get rid of the old state */	1031	save_perl (aTHX_ prev);
683	SAVE (prev, -1);	1032	load_perl (aTHX_ next);
684	/* setup coroutine call */
685	setup_coro (next);
686	/* need a stack */
687	next->cctx = 0;
688	}	1033	}
689		1034
690	if (!prev->cctx)
691	/* create a new empty context */
692	Newz (0, prev->cctx, 1, coro_cctx);
693
694	prev__cctx = prev->cctx;	1035	prev__cctx = prev->cctx;
695		1036
696	/* possibly "free" the cctx */	1037	/* possibly "free" the cctx */
697	if (prev__cctx->idle_sp == STACKLEVEL)	1038	if (prev__cctx->idle_sp == STACKLEVEL && !(prev__cctx->flags & CC_TRACE))
698	{	1039	{
699	assert (PL_top_env == prev__cctx->top_env);//D	1040	/* I assume that STACKLEVEL is a stronger indicator than PL_top_env changes */
		1041	assert (("ERROR: current top_env must equal previous top_env", PL_top_env == prev__cctx->idle_te));
		1042
		1043	prev->cctx = 0;
		1044
700	cctx_put (prev__cctx);	1045	cctx_put (prev__cctx);
701	prev->cctx = 0;
702	}	1046	}
703		1047
		1048	++next->usecount;
		1049
704	if (!next->cctx)	1050	if (!next->cctx)
705	next->cctx = cctx_get ();	1051	next->cctx = cctx_get (aTHX);
706		1052
707	if (prev__cctx != next->cctx)	1053	if (prev__cctx != next->cctx)
708	{	1054	{
709	prev__cctx->top_env = PL_top_env;	1055	prev__cctx->top_env = PL_top_env;
710	PL_top_env = next->cctx->top_env;	1056	PL_top_env = next->cctx->top_env;
711	coro_transfer (&prev__cctx->cctx, &next->cctx->cctx);	1057	coro_transfer (&prev__cctx->cctx, &next->cctx->cctx);
712	}	1058	}
713		1059
714	free_coro_mortal ();	1060	free_coro_mortal (aTHX);
715
716	UNLOCK;	1061	UNLOCK;
717	}	1062	}
718	}	1063	}
719		1064
720	struct transfer_args	1065	struct transfer_args
721	{	1066	{
722	struct coro prev, next;	1067	struct coro prev, next;
723	int flags;
724	};	1068	};
725		1069
726	#define TRANSFER(ta) transfer ((ta).prev, (ta).next, (ta).flags)	1070	#define TRANSFER(ta) transfer (aTHX_ (ta).prev, (ta).next)
		1071	#define TRANSFER_CHECK(ta) transfer_check (aTHX_ (ta).prev, (ta).next)
727		1072
		1073	/ high level stuff ******************************************************/
		1074
728	static void	1075	static int
729	coro_state_destroy (struct coro *coro)	1076	coro_state_destroy (pTHX_ struct coro *coro)
730	{	1077	{
731	if (coro->refcnt--)	1078	if (coro->flags & CF_DESTROYED)
732	return;	1079	return 0;
		1080
		1081	coro->flags \|= CF_DESTROYED;
		1082
		1083	if (coro->flags & CF_READY)
		1084	{
		1085	/* reduce nready, as destroying a ready coro effectively unreadies it */
		1086	/* alternative: look through all ready queues and remove the coro */
		1087	LOCK;
		1088	--coro_nready;
		1089	UNLOCK;
		1090	}
		1091	else
		1092	coro->flags \|= CF_READY; /* make sure it is NOT put into the readyqueue */
733		1093
734	if (coro->mainstack && coro->mainstack != main_mainstack)	1094	if (coro->mainstack && coro->mainstack != main_mainstack)
735	{	1095	{
736	struct coro temp;	1096	struct coro temp;
737		1097
738	SAVE ((&temp), TRANSFER_SAVE_ALL);	1098	if (coro->flags & CF_RUNNING)
739	LOAD (coro);	1099	croak ("FATAL: tried to destroy currently running coroutine");
740		1100
741	coro_destroy_stacks ();	1101	save_perl (aTHX_ &temp);
		1102	load_perl (aTHX_ coro);
742		1103
		1104	coro_destroy (aTHX_ coro);
		1105
743	LOAD ((&temp)); /* this will get rid of defsv etc.. */	1106	load_perl (aTHX_ &temp); /* this will get rid of defsv etc.. */
744		1107
745	coro->mainstack = 0;	1108	coro->mainstack = 0;
746	}	1109	}
747		1110
748	cctx_free (coro->cctx);	1111	cctx_destroy (coro->cctx);
749	SvREFCNT_dec (coro->args);	1112	SvREFCNT_dec (coro->args);
750	Safefree (coro);	1113
		1114	if (coro->next) coro->next->prev = coro->prev;
		1115	if (coro->prev) coro->prev->next = coro->next;
		1116	if (coro == coro_first) coro_first = coro->next;
		1117
		1118	return 1;
751	}	1119	}
752		1120
753	static int	1121	static int
754	coro_state_clear (pTHX_ SV sv, MAGIC mg)	1122	coro_state_free (pTHX_ SV sv, MAGIC mg)
755	{	1123	{
756	struct coro coro = (struct coro )mg->mg_ptr;	1124	struct coro coro = (struct coro )mg->mg_ptr;
757	mg->mg_ptr = 0;	1125	mg->mg_ptr = 0;
758		1126
		1127	coro->hv = 0;
		1128
		1129	if (--coro->refcnt < 0)
		1130	{
759	coro_state_destroy (coro);	1131	coro_state_destroy (aTHX_ coro);
		1132	Safefree (coro);
		1133	}
760		1134
761	return 0;	1135	return 0;
762	}	1136	}
763		1137
764	static int	1138	static int
…		…
771	return 0;	1145	return 0;
772	}	1146	}
773		1147
774	static MGVTBL coro_state_vtbl = {	1148	static MGVTBL coro_state_vtbl = {
775	0, 0, 0, 0,	1149	0, 0, 0, 0,
776	coro_state_clear,	1150	coro_state_free,
777	0,	1151	0,
778	#ifdef MGf_DUP	1152	#ifdef MGf_DUP
779	coro_state_dup,	1153	coro_state_dup,
780	#else	1154	#else
781	# define MGf_DUP 0	1155	# define MGf_DUP 0
782	#endif	1156	#endif
783	};	1157	};
784		1158
785	static struct coro *
786	SvSTATE (SV *coro)
787	{
788	HV *stash;
789	MAGIC *mg;
790
791	if (SvROK (coro))
792	coro = SvRV (coro);
793
794	stash = SvSTASH (coro);
795	if (stash != coro_stash && stash != coro_state_stash)
796	{
797	/* very slow, but rare, check */
798	if (!sv_derived_from (sv_2mortal (newRV_inc (coro)), "Coro::State"))
799	croak ("Coro::State object required");
800	}
801
802	mg = SvMAGIC (coro);
803	assert (mg->mg_type == PERL_MAGIC_ext);
804	return (struct coro *)mg->mg_ptr;
805	}
806
807	static void	1159	static void
808	prepare_transfer (struct transfer_args ta, SV prev, SV *next, int flags)	1160	prepare_transfer (pTHX_ struct transfer_args ta, SV prev_sv, SV *next_sv)
809	{	1161	{
810	ta->prev = SvSTATE (prev);	1162	ta->prev = SvSTATE (prev_sv);
811	ta->next = SvSTATE (next);	1163	ta->next = SvSTATE (next_sv);
812	ta->flags = flags;	1164	TRANSFER_CHECK (*ta);
813	}	1165	}
814		1166
815	static void	1167	static void
816	api_transfer (SV prev, SV next, int flags)	1168	api_transfer (SV prev_sv, SV next_sv)
817	{	1169	{
818	dTHX;	1170	dTHX;
819	struct transfer_args ta;	1171	struct transfer_args ta;
820		1172
821	prepare_transfer (&ta, prev, next, flags);	1173	prepare_transfer (aTHX_ &ta, prev_sv, next_sv);
822	TRANSFER (ta);	1174	TRANSFER (ta);
823	}	1175	}
824		1176
825	/ Coro ******************************************************************/	1177	/ Coro ******************************************************************/
826		1178
827	#define PRIO_MAX 3
828	#define PRIO_HIGH 1
829	#define PRIO_NORMAL 0
830	#define PRIO_LOW -1
831	#define PRIO_IDLE -3
832	#define PRIO_MIN -4
833
834	/* for Coro.pm */
835	static GV coro_current, coro_idle;
836	static AV *coro_ready [PRIO_MAX-PRIO_MIN+1];
837	static int coro_nready;
838
839	static void	1179	static void
840	coro_enq (SV *sv)	1180	coro_enq (pTHX_ SV *coro_sv)
841	{	1181	{
842	int prio;
843
844	if (SvTYPE (sv) != SVt_PVHV)
845	croak ("Coro::ready tried to enqueue something that is not a coroutine");
846
847	prio = SvSTATE (sv)->prio;
848
849	av_push (coro_ready [prio - PRIO_MIN], sv);	1182	av_push (coro_ready [SvSTATE (coro_sv)->prio - PRIO_MIN], coro_sv);
850	coro_nready++;
851	}	1183	}
852		1184
853	static SV *	1185	static SV *
854	coro_deq (int min_prio)	1186	coro_deq (pTHX_ int min_prio)
855	{	1187	{
856	int prio = PRIO_MAX - PRIO_MIN;	1188	int prio = PRIO_MAX - PRIO_MIN;
857		1189
858	min_prio -= PRIO_MIN;	1190	min_prio -= PRIO_MIN;
859	if (min_prio < 0)	1191	if (min_prio < 0)
860	min_prio = 0;	1192	min_prio = 0;
861		1193
862	for (prio = PRIO_MAX - PRIO_MIN + 1; --prio >= min_prio; )	1194	for (prio = PRIO_MAX - PRIO_MIN + 1; --prio >= min_prio; )
863	if (AvFILLp (coro_ready [prio]) >= 0)	1195	if (AvFILLp (coro_ready [prio]) >= 0)
864	{
865	coro_nready--;
866	return av_shift (coro_ready [prio]);	1196	return av_shift (coro_ready [prio]);
867	}
868		1197
869	return 0;	1198	return 0;
870	}	1199	}
871		1200
872	static void	1201	static int
873	api_ready (SV *coro)	1202	api_ready (SV *coro_sv)
874	{	1203	{
875	dTHX;	1204	dTHX;
		1205	struct coro *coro;
876		1206
877	if (SvROK (coro))	1207	if (SvROK (coro_sv))
878	coro = SvRV (coro);	1208	coro_sv = SvRV (coro_sv);
		1209
		1210	coro = SvSTATE (coro_sv);
		1211
		1212	if (coro->flags & CF_READY)
		1213	return 0;
		1214
		1215	coro->flags \|= CF_READY;
879		1216
880	LOCK;	1217	LOCK;
881	coro_enq (SvREFCNT_inc (coro));	1218	coro_enq (aTHX_ SvREFCNT_inc (coro_sv));
		1219	++coro_nready;
882	UNLOCK;	1220	UNLOCK;
883	}
884		1221
		1222	return 1;
		1223	}
		1224
885	static void	1225	static int
		1226	api_is_ready (SV *coro_sv)
		1227	{
		1228	dTHX;
		1229	return !!(SvSTATE (coro_sv)->flags & CF_READY);
		1230	}
		1231
		1232	static void
886	prepare_schedule (struct transfer_args *ta)	1233	prepare_schedule (pTHX_ struct transfer_args *ta)
887	{	1234	{
888	SV current, prev, *next;	1235	SV prev_sv, next_sv;
889
890	current = GvSV (coro_current);
891		1236
892	for (;;)	1237	for (;;)
893	{	1238	{
894	LOCK;	1239	LOCK;
895	next = coro_deq (PRIO_MIN);	1240	next_sv = coro_deq (aTHX_ PRIO_MIN);
		1241
		1242	/* nothing to schedule: call the idle handler */
		1243	if (!next_sv)
		1244	{
		1245	dSP;
		1246	UNLOCK;
		1247
		1248	ENTER;
		1249	SAVETMPS;
		1250
		1251	PUSHMARK (SP);
		1252	PUTBACK;
		1253	call_sv (get_sv ("Coro::idle", FALSE), G_DISCARD);
		1254
		1255	FREETMPS;
		1256	LEAVE;
		1257	continue;
		1258	}
		1259
		1260	ta->next = SvSTATE (next_sv);
		1261
		1262	/* cannot transfer to destroyed coros, skip and look for next */
		1263	if (ta->next->flags & CF_DESTROYED)
		1264	{
		1265	UNLOCK;
		1266	SvREFCNT_dec (next_sv);
		1267	/* coro_nready is already taken care of by destroy */
		1268	continue;
		1269	}
		1270
		1271	--coro_nready;
896	UNLOCK;	1272	UNLOCK;
897
898	if (next)
899	break;	1273	break;
900
901	{
902	dSP;
903
904	ENTER;
905	SAVETMPS;
906
907	PUSHMARK (SP);
908	PUTBACK;
909	call_sv (GvSV (coro_idle), G_DISCARD);
910
911	FREETMPS;
912	LEAVE;
913	}	1274	}
914	}
915
916	prev = SvRV (current);
917	SvRV (current) = next;
918		1275
919	/* free this only after the transfer */	1276	/* free this only after the transfer */
		1277	prev_sv = SvRV (coro_current);
		1278	ta->prev = SvSTATE (prev_sv);
		1279	TRANSFER_CHECK (*ta);
		1280	assert (ta->next->flags & CF_READY);
		1281	ta->next->flags &= ~CF_READY;
		1282	SvRV_set (coro_current, next_sv);
		1283
920	LOCK;	1284	LOCK;
921	free_coro_mortal ();	1285	free_coro_mortal (aTHX);
		1286	coro_mortal = prev_sv;
922	UNLOCK;	1287	UNLOCK;
923	coro_mortal = prev;
924
925	ta->prev = SvSTATE (prev);
926	ta->next = SvSTATE (next);
927	ta->flags = TRANSFER_SAVE_ALL;
928	}	1288	}
929		1289
930	static void	1290	static void
931	prepare_cede (struct transfer_args *ta)	1291	prepare_cede (pTHX_ struct transfer_args *ta)
932	{	1292	{
933	LOCK;	1293	api_ready (coro_current);
934	coro_enq (SvREFCNT_inc (SvRV (GvSV (coro_current))));
935	UNLOCK;
936
937	prepare_schedule (ta);	1294	prepare_schedule (aTHX_ ta);
		1295	}
		1296
		1297	static int
		1298	prepare_cede_notself (pTHX_ struct transfer_args *ta)
		1299	{
		1300	if (coro_nready)
		1301	{
		1302	SV *prev = SvRV (coro_current);
		1303	prepare_schedule (aTHX_ ta);
		1304	api_ready (prev);
		1305	return 1;
		1306	}
		1307	else
		1308	return 0;
938	}	1309	}
939		1310
940	static void	1311	static void
941	api_schedule (void)	1312	api_schedule (void)
942	{	1313	{
943	dTHX;	1314	dTHX;
944	struct transfer_args ta;	1315	struct transfer_args ta;
945		1316
946	prepare_schedule (&ta);	1317	prepare_schedule (aTHX_ &ta);
947	TRANSFER (ta);	1318	TRANSFER (ta);
948	}	1319	}
949		1320
950	static void	1321	static int
951	api_cede (void)	1322	api_cede (void)
952	{	1323	{
953	dTHX;	1324	dTHX;
954	struct transfer_args ta;	1325	struct transfer_args ta;
955		1326
956	prepare_cede (&ta);	1327	prepare_cede (aTHX_ &ta);
		1328
		1329	if (ta.prev != ta.next)
		1330	{
957	TRANSFER (ta);	1331	TRANSFER (ta);
		1332	return 1;
		1333	}
		1334	else
		1335	return 0;
958	}	1336	}
959		1337
		1338	static int
		1339	api_cede_notself (void)
		1340	{
		1341	dTHX;
		1342	struct transfer_args ta;
		1343
		1344	if (prepare_cede_notself (aTHX_ &ta))
		1345	{
		1346	TRANSFER (ta);
		1347	return 1;
		1348	}
		1349	else
		1350	return 0;
		1351	}
		1352
		1353	static void
		1354	api_trace (SV *coro_sv, int flags)
		1355	{
		1356	dTHX;
		1357	struct coro *coro = SvSTATE (coro_sv);
		1358
		1359	if (flags & CC_TRACE)
		1360	{
		1361	if (!coro->cctx)
		1362	coro->cctx = cctx_new ();
		1363	else if (!(coro->cctx->flags & CC_TRACE))
		1364	croak ("cannot enable tracing on coroutine with custom stack");
		1365
		1366	coro->cctx->flags \|= CC_NOREUSE \| (flags & (CC_TRACE \| CC_TRACE_ALL));
		1367	}
		1368	else if (coro->cctx && coro->cctx->flags & CC_TRACE)
		1369	{
		1370	coro->cctx->flags &= ~(CC_TRACE \| CC_TRACE_ALL);
		1371
		1372	if (coro->flags & CF_RUNNING)
		1373	PL_runops = RUNOPS_DEFAULT;
		1374	else
		1375	coro->runops = RUNOPS_DEFAULT;
		1376	}
		1377	}
		1378
960	MODULE = Coro::State PACKAGE = Coro::State	1379	MODULE = Coro::State PACKAGE = Coro::State PREFIX = api_
961		1380
962	PROTOTYPES: DISABLE	1381	PROTOTYPES: DISABLE
963		1382
964	BOOT:	1383	BOOT:
965	{	1384	{
966	#ifdef USE_ITHREADS	1385	#ifdef USE_ITHREADS
967	MUTEX_INIT (&coro_mutex);	1386	MUTEX_INIT (&coro_mutex);
968	#endif	1387	#endif
969	BOOT_PAGESIZE;	1388	BOOT_PAGESIZE;
970		1389
		1390	irsgv = gv_fetchpv ("/", 1, SVt_PV);
		1391
971	coro_state_stash = gv_stashpv ("Coro::State", TRUE);	1392	coro_state_stash = gv_stashpv ("Coro::State", TRUE);
972		1393
973	newCONSTSUB (coro_state_stash, "SAVE_DEFAV", newSViv (TRANSFER_SAVE_DEFAV));	1394	newCONSTSUB (coro_state_stash, "CC_TRACE" , newSViv (CC_TRACE));
974	newCONSTSUB (coro_state_stash, "SAVE_DEFSV", newSViv (TRANSFER_SAVE_DEFSV));	1395	newCONSTSUB (coro_state_stash, "CC_TRACE_SUB" , newSViv (CC_TRACE_SUB));
975	newCONSTSUB (coro_state_stash, "SAVE_ERRSV", newSViv (TRANSFER_SAVE_ERRSV));	1396	newCONSTSUB (coro_state_stash, "CC_TRACE_LINE", newSViv (CC_TRACE_LINE));
		1397	newCONSTSUB (coro_state_stash, "CC_TRACE_ALL" , newSViv (CC_TRACE_ALL));
976		1398
977	main_mainstack = PL_mainstack;	1399	main_mainstack = PL_mainstack;
		1400	main_top_env = PL_top_env;
		1401
		1402	while (main_top_env->je_prev)
		1403	main_top_env = main_top_env->je_prev;
978		1404
979	coroapi.ver = CORO_API_VERSION;	1405	coroapi.ver = CORO_API_VERSION;
980	coroapi.transfer = api_transfer;	1406	coroapi.transfer = api_transfer;
981		1407
982	assert (("PRIO_NORMAL must be 0", !PRIO_NORMAL));	1408	assert (("PRIO_NORMAL must be 0", !PRIO_NORMAL));
…		…
989	struct coro *coro;	1415	struct coro *coro;
990	HV *hv;	1416	HV *hv;
991	int i;	1417	int i;
992		1418
993	Newz (0, coro, 1, struct coro);	1419	Newz (0, coro, 1, struct coro);
994	coro->args = newAV ();	1420	coro->args = newAV ();
		1421	coro->flags = CF_NEW;
995		1422
		1423	if (coro_first) coro_first->prev = coro;
		1424	coro->next = coro_first;
		1425	coro_first = coro;
		1426
996	hv = newHV ();	1427	coro->hv = hv = newHV ();
997	sv_magicext ((SV )hv, 0, PERL_MAGIC_ext, &coro_state_vtbl, (char )coro, 0)->mg_flags \|= MGf_DUP;	1428	sv_magicext ((SV )hv, 0, PERL_MAGIC_ext, &coro_state_vtbl, (char )coro, 0)->mg_flags \|= MGf_DUP;
998	RETVAL = sv_bless (newRV_noinc ((SV *)hv), gv_stashpv (klass, 1));	1429	RETVAL = sv_bless (newRV_noinc ((SV *)hv), gv_stashpv (klass, 1));
999		1430
1000	for (i = 1; i < items; i++)	1431	for (i = 1; i < items; i++)
1001	av_push (coro->args, newSVsv (ST (i)));	1432	av_push (coro->args, newSVsv (ST (i)));
1002	}	1433	}
1003	OUTPUT:	1434	OUTPUT:
1004	RETVAL	1435	RETVAL
1005		1436
		1437	# these not obviously related functions are all rolled into the same xs
		1438	# function to increase chances that they all will call transfer with the same
		1439	# stack offset
1006	void	1440	void
1007	_set_stacklevel (...)	1441	_set_stacklevel (...)
1008	ALIAS:	1442	ALIAS:
1009	Coro::State::transfer = 1	1443	Coro::State::transfer = 1
1010	Coro::schedule = 2	1444	Coro::schedule = 2
1011	Coro::cede = 3	1445	Coro::cede = 3
1012	Coro::Cont::yield = 4	1446	Coro::cede_notself = 4
1013	CODE:	1447	CODE:
1014	{	1448	{
1015	struct transfer_args ta;	1449	struct transfer_args ta;
1016		1450
1017	switch (ix)	1451	switch (ix)
1018	{	1452	{
1019	case 0:	1453	case 0:
1020	ta.prev = (struct coro )INT2PTR (coro_cctx , SvIV (ST (0)));	1454	ta.prev = (struct coro )INT2PTR (coro_cctx , SvIV (ST (0)));
1021	ta.next = 0;	1455	ta.next = 0;
1022	ta.flags = TRANSFER_SET_STACKLEVEL;
1023	break;	1456	break;
1024		1457
1025	case 1:	1458	case 1:
1026	if (items != 3)	1459	if (items != 2)
1027	croak ("Coro::State::transfer(prev,next,flags) expects three arguments, not %d", items);	1460	croak ("Coro::State::transfer (prev,next) expects two arguments, not %d", items);
1028		1461
1029	prepare_transfer (&ta, ST (0), ST (1), SvIV (ST (2)));	1462	prepare_transfer (aTHX_ &ta, ST (0), ST (1));
1030	break;	1463	break;
1031		1464
1032	case 2:	1465	case 2:
1033	prepare_schedule (&ta);	1466	prepare_schedule (aTHX_ &ta);
1034	break;	1467	break;
1035		1468
1036	case 3:	1469	case 3:
1037	prepare_cede (&ta);	1470	prepare_cede (aTHX_ &ta);
1038	break;	1471	break;
1039		1472
1040	case 4:	1473	case 4:
1041	{	1474	if (!prepare_cede_notself (aTHX_ &ta))
1042	SV *yieldstack;	1475	XSRETURN_EMPTY;
1043	SV *sv;
1044	AV *defav = GvAV (PL_defgv);
1045		1476
1046	yieldstack = *hv_fetch (
1047	(HV *)SvRV (GvSV (coro_current)),
1048	"yieldstack", sizeof ("yieldstack") - 1,
1049	0
1050	);
1051
1052	/* set up @_ -- ugly */
1053	av_clear (defav);
1054	av_fill (defav, items - 1);
1055	while (items--)
1056	av_store (defav, items, SvREFCNT_inc (ST(items)));
1057
1058	sv = av_pop ((AV *)SvRV (yieldstack));
1059	ta.prev = SvSTATE (av_fetch ((AV )SvRV (sv), 0, 0));
1060	ta.next = SvSTATE (av_fetch ((AV )SvRV (sv), 1, 0));
1061	ta.flags = 0;
1062	SvREFCNT_dec (sv);
1063	}
1064	break;	1477	break;
1065
1066	}	1478	}
1067		1479
		1480	BARRIER;
1068	TRANSFER (ta);	1481	TRANSFER (ta);
1069	}
1070		1482
1071	void	1483	if (GIMME_V != G_VOID && ta.next != ta.prev)
1072	_clone_state_from (SV dst, SV src)	1484	XSRETURN_YES;
		1485	}
		1486
		1487	bool
		1488	_destroy (SV *coro_sv)
1073	CODE:	1489	CODE:
1074	{	1490	RETVAL = coro_state_destroy (aTHX_ SvSTATE (coro_sv));
1075	struct coro *coro_src = SvSTATE (src);	1491	OUTPUT:
1076		1492	RETVAL
1077	sv_unmagic (SvRV (dst), PERL_MAGIC_ext);
1078
1079	++coro_src->refcnt;
1080	sv_magicext (SvRV (dst), 0, PERL_MAGIC_ext, &coro_state_vtbl, (char *)coro_src, 0)->mg_flags \|= MGf_DUP;
1081	}
1082		1493
1083	void	1494	void
1084	_exit (code)	1495	_exit (code)
1085	int code	1496	int code
1086	PROTOTYPE: $	1497	PROTOTYPE: $
1087	CODE:	1498	CODE:
1088	_exit (code);	1499	_exit (code);
1089		1500
1090	int	1501	int
		1502	cctx_stacksize (int new_stacksize = 0)
		1503	CODE:
		1504	RETVAL = coro_stacksize;
		1505	if (new_stacksize)
		1506	coro_stacksize = new_stacksize;
		1507	OUTPUT:
		1508	RETVAL
		1509
		1510	int
1091	cctx_count ()	1511	cctx_count ()
1092	CODE:	1512	CODE:
1093	RETVAL = cctx_count;	1513	RETVAL = cctx_count;
1094	OUTPUT:	1514	OUTPUT:
1095	RETVAL	1515	RETVAL
…		…
1099	CODE:	1519	CODE:
1100	RETVAL = cctx_idle;	1520	RETVAL = cctx_idle;
1101	OUTPUT:	1521	OUTPUT:
1102	RETVAL	1522	RETVAL
1103		1523
		1524	void
		1525	list ()
		1526	PPCODE:
		1527	{
		1528	struct coro *coro;
		1529	for (coro = coro_first; coro; coro = coro->next)
		1530	if (coro->hv)
		1531	XPUSHs (sv_2mortal (newRV_inc ((SV *)coro->hv)));
		1532	}
		1533
		1534	void
		1535	call (Coro::State coro, SV *coderef)
		1536	ALIAS:
		1537	eval = 1
		1538	CODE:
		1539	{
		1540	if (coro->mainstack)
		1541	{
		1542	struct coro temp;
		1543	Zero (&temp, 1, struct coro);
		1544
		1545	if (!(coro->flags & CF_RUNNING))
		1546	{
		1547	save_perl (aTHX_ &temp);
		1548	load_perl (aTHX_ coro);
		1549	}
		1550
		1551	{
		1552	dSP;
		1553	ENTER;
		1554	SAVETMPS;
		1555	PUSHMARK (SP);
		1556	PUTBACK;
		1557	if (ix)
		1558	eval_sv (coderef, 0);
		1559	else
		1560	call_sv (coderef, G_KEEPERR \| G_EVAL \| G_VOID \| G_DISCARD);
		1561	SPAGAIN;
		1562	FREETMPS;
		1563	LEAVE;
		1564	PUTBACK;
		1565	}
		1566
		1567	if (!(coro->flags & CF_RUNNING))
		1568	{
		1569	save_perl (aTHX_ coro);
		1570	load_perl (aTHX_ &temp);
		1571	}
		1572	}
		1573	}
		1574
		1575	SV *
		1576	is_ready (Coro::State coro)
		1577	PROTOTYPE: $
		1578	ALIAS:
		1579	is_ready = CF_READY
		1580	is_running = CF_RUNNING
		1581	is_new = CF_NEW
		1582	is_destroyed = CF_DESTROYED
		1583	CODE:
		1584	RETVAL = boolSV (coro->flags & ix);
		1585	OUTPUT:
		1586	RETVAL
		1587
		1588	void
		1589	api_trace (SV *coro, int flags = CC_TRACE \| CC_TRACE_SUB)
		1590
		1591	SV *
		1592	has_stack (Coro::State coro)
		1593	PROTOTYPE: $
		1594	CODE:
		1595	RETVAL = boolSV (!!coro->cctx);
		1596	OUTPUT:
		1597	RETVAL
		1598
		1599	int
		1600	is_traced (Coro::State coro)
		1601	PROTOTYPE: $
		1602	CODE:
		1603	RETVAL = (coro->cctx ? coro->cctx->flags : 0) & CC_TRACE_ALL;
		1604	OUTPUT:
		1605	RETVAL
		1606
		1607	IV
		1608	rss (Coro::State coro)
		1609	PROTOTYPE: $
		1610	ALIAS:
		1611	usecount = 1
		1612	CODE:
		1613	switch (ix)
		1614	{
		1615	case 0: RETVAL = coro_rss (aTHX_ coro); break;
		1616	case 1: RETVAL = coro->usecount; break;
		1617	}
		1618	OUTPUT:
		1619	RETVAL
		1620
		1621
1104	MODULE = Coro::State PACKAGE = Coro	1622	MODULE = Coro::State PACKAGE = Coro
1105		1623
1106	BOOT:	1624	BOOT:
1107	{	1625	{
1108	int i;	1626	int i;
		1627
		1628	sv_pool_rss = get_sv ("Coro::POOL_RSS" , TRUE);
		1629	sv_pool_size = get_sv ("Coro::POOL_SIZE" , TRUE);
		1630	av_async_pool = get_av ("Coro::async_pool", TRUE);
		1631
		1632	coro_current = get_sv ("Coro::current", FALSE);
		1633	SvREADONLY_on (coro_current);
1109		1634
1110	coro_stash = gv_stashpv ("Coro", TRUE);	1635	coro_stash = gv_stashpv ("Coro", TRUE);
1111		1636
1112	newCONSTSUB (coro_stash, "PRIO_MAX", newSViv (PRIO_MAX));	1637	newCONSTSUB (coro_stash, "PRIO_MAX", newSViv (PRIO_MAX));
1113	newCONSTSUB (coro_stash, "PRIO_HIGH", newSViv (PRIO_HIGH));	1638	newCONSTSUB (coro_stash, "PRIO_HIGH", newSViv (PRIO_HIGH));
1114	newCONSTSUB (coro_stash, "PRIO_NORMAL", newSViv (PRIO_NORMAL));	1639	newCONSTSUB (coro_stash, "PRIO_NORMAL", newSViv (PRIO_NORMAL));
1115	newCONSTSUB (coro_stash, "PRIO_LOW", newSViv (PRIO_LOW));	1640	newCONSTSUB (coro_stash, "PRIO_LOW", newSViv (PRIO_LOW));
1116	newCONSTSUB (coro_stash, "PRIO_IDLE", newSViv (PRIO_IDLE));	1641	newCONSTSUB (coro_stash, "PRIO_IDLE", newSViv (PRIO_IDLE));
1117	newCONSTSUB (coro_stash, "PRIO_MIN", newSViv (PRIO_MIN));	1642	newCONSTSUB (coro_stash, "PRIO_MIN", newSViv (PRIO_MIN));
1118		1643
1119	coro_current = gv_fetchpv ("Coro::current", TRUE, SVt_PV);
1120	coro_idle = gv_fetchpv ("Coro::idle" , TRUE, SVt_PV);
1121
1122	for (i = PRIO_MAX - PRIO_MIN + 1; i--; )	1644	for (i = PRIO_MAX - PRIO_MIN + 1; i--; )
1123	coro_ready[i] = newAV ();	1645	coro_ready[i] = newAV ();
1124		1646
1125	{	1647	{
1126	SV *sv = perl_get_sv("Coro::API", 1);	1648	SV *sv = perl_get_sv("Coro::API", 1);
1127		1649
1128	coroapi.schedule = api_schedule;	1650	coroapi.schedule = api_schedule;
1129	coroapi.cede = api_cede;	1651	coroapi.cede = api_cede;
		1652	coroapi.cede_notself = api_cede_notself;
1130	coroapi.ready = api_ready;	1653	coroapi.ready = api_ready;
		1654	coroapi.is_ready = api_is_ready;
1131	coroapi.nready = &coro_nready;	1655	coroapi.nready = &coro_nready;
1132	coroapi.current = coro_current;	1656	coroapi.current = coro_current;
1133		1657
1134	GCoroAPI = &coroapi;	1658	GCoroAPI = &coroapi;
1135	sv_setiv (sv, (IV)&coroapi);	1659	sv_setiv (sv, (IV)&coroapi);
1136	SvREADONLY_on (sv);	1660	SvREADONLY_on (sv);
1137	}	1661	}
1138	}	1662	}
		1663
		1664	void
		1665	_set_current (SV *current)
		1666	PROTOTYPE: $
		1667	CODE:
		1668	SvREFCNT_dec (SvRV (coro_current));
		1669	SvRV_set (coro_current, SvREFCNT_inc (SvRV (current)));
1139		1670
1140	int	1671	int
1141	prio (Coro::State coro, int newprio = 0)	1672	prio (Coro::State coro, int newprio = 0)
1142	ALIAS:	1673	ALIAS:
1143	nice = 1	1674	nice = 1
…		…
1146	RETVAL = coro->prio;	1677	RETVAL = coro->prio;
1147		1678
1148	if (items > 1)	1679	if (items > 1)
1149	{	1680	{
1150	if (ix)	1681	if (ix)
1151	newprio += coro->prio;	1682	newprio = coro->prio - newprio;
1152		1683
1153	if (newprio < PRIO_MIN) newprio = PRIO_MIN;	1684	if (newprio < PRIO_MIN) newprio = PRIO_MIN;
1154	if (newprio > PRIO_MAX) newprio = PRIO_MAX;	1685	if (newprio > PRIO_MAX) newprio = PRIO_MAX;
1155		1686
1156	coro->prio = newprio;	1687	coro->prio = newprio;
1157	}	1688	}
1158	}	1689	}
		1690	OUTPUT:
		1691	RETVAL
1159		1692
1160	void	1693	SV *
1161	ready (SV *self)	1694	ready (SV *self)
1162	PROTOTYPE: $	1695	PROTOTYPE: $
1163	CODE:	1696	CODE:
1164	api_ready (self);	1697	RETVAL = boolSV (api_ready (self));
		1698	OUTPUT:
		1699	RETVAL
1165		1700
1166	int	1701	int
1167	nready (...)	1702	nready (...)
1168	PROTOTYPE:	1703	PROTOTYPE:
1169	CODE:	1704	CODE:
1170	RETVAL = coro_nready;	1705	RETVAL = coro_nready;
1171	OUTPUT:	1706	OUTPUT:
1172	RETVAL	1707	RETVAL
1173		1708
		1709	# for async_pool speedup
		1710	void
		1711	_pool_1 (SV *cb)
		1712	CODE:
		1713	{
		1714	struct coro *coro = SvSTATE (coro_current);
		1715	HV hv = (HV )SvRV (coro_current);
		1716	AV *defav = GvAV (PL_defgv);
		1717	SV *invoke = hv_delete (hv, "_invoke", sizeof ("_invoke") - 1, 0);
		1718	AV *invoke_av;
		1719	int i, len;
		1720
		1721	if (!invoke)
		1722	croak ("\3terminate\2\n");
		1723
		1724	SvREFCNT_dec (coro->saved_deffh);
		1725	coro->saved_deffh = SvREFCNT_inc ((SV *)PL_defoutgv);
		1726
		1727	hv_store (hv, "desc", sizeof ("desc") - 1,
		1728	newSVpvn ("[async_pool]", sizeof ("[async_pool]") - 1), 0);
		1729
		1730	invoke_av = (AV *)SvRV (invoke);
		1731	len = av_len (invoke_av);
		1732
		1733	sv_setsv (cb, AvARRAY (invoke_av)[0]);
		1734
		1735	if (len > 0)
		1736	{
		1737	av_fill (defav, len - 1);
		1738	for (i = 0; i < len; ++i)
		1739	av_store (defav, i, SvREFCNT_inc (AvARRAY (invoke_av)[i + 1]));
		1740	}
		1741
		1742	SvREFCNT_dec (invoke);
		1743	}
		1744
		1745	void
		1746	_pool_2 (SV *cb)
		1747	CODE:
		1748	{
		1749	struct coro *coro = SvSTATE (coro_current);
		1750
		1751	sv_setsv (cb, &PL_sv_undef);
		1752
		1753	SvREFCNT_dec ((SV )PL_defoutgv); PL_defoutgv = (GV )coro->saved_deffh;
		1754	coro->saved_deffh = 0;
		1755
		1756	if (coro_rss (aTHX_ coro) > SvIV (sv_pool_rss)
		1757	\|\| av_len (av_async_pool) + 1 >= SvIV (sv_pool_size))
		1758	croak ("\3terminate\2\n");
		1759
		1760	av_clear (GvAV (PL_defgv));
		1761	hv_store ((HV *)SvRV (coro_current), "desc", sizeof ("desc") - 1,
		1762	newSVpvn ("[async_pool idle]", sizeof ("[async_pool idle]") - 1), 0);
		1763
		1764	coro->prio = 0;
		1765
		1766	if (coro->cctx && (coro->cctx->flags & CC_TRACE))
		1767	api_trace (coro_current, 0);
		1768
		1769	av_push (av_async_pool, newSVsv (coro_current));
		1770	}
		1771
		1772
1174	MODULE = Coro::State PACKAGE = Coro::AIO	1773	MODULE = Coro::State PACKAGE = Coro::AIO
1175		1774
1176	SV *	1775	SV *
1177	_get_state ()	1776	_get_state ()
1178	CODE:	1777	CODE:
1179	{	1778	{
1180	struct {	1779	struct io_state *data;
1181	int errorno;
1182	int laststype;
1183	int laststatval;
1184	Stat_t statcache;
1185	} data;
1186		1780
		1781	RETVAL = newSV (sizeof (struct io_state));
		1782	data = (struct io_state *)SvPVX (RETVAL);
		1783	SvCUR_set (RETVAL, sizeof (struct io_state));
		1784	SvPOK_only (RETVAL);
		1785
1187	data.errorno = errno;	1786	data->errorno = errno;
1188	data.laststype = PL_laststype;	1787	data->laststype = PL_laststype;
1189	data.laststatval = PL_laststatval;	1788	data->laststatval = PL_laststatval;
1190	data.statcache = PL_statcache;	1789	data->statcache = PL_statcache;
1191
1192	RETVAL = newSVpvn ((char *)&data, sizeof data);
1193	}	1790	}
1194	OUTPUT:	1791	OUTPUT:
1195	RETVAL	1792	RETVAL
1196		1793
1197	void	1794	void
1198	_set_state (char *data_)	1795	_set_state (char *data_)
1199	PROTOTYPE: $	1796	PROTOTYPE: $
1200	CODE:	1797	CODE:
1201	{	1798	{
1202	struct {	1799	struct io_state data = (void )data_;
1203	int errorno;
1204	int laststype;
1205	int laststatval;
1206	Stat_t statcache;
1207	} data = (void )data_;
1208		1800
1209	errno = data->errorno;	1801	errno = data->errorno;
1210	PL_laststype = data->laststype;	1802	PL_laststype = data->laststype;
1211	PL_laststatval = data->laststatval;	1803	PL_laststatval = data->laststatval;
1212	PL_statcache = data->statcache;	1804	PL_statcache = data->statcache;
1213	}	1805	}
		1806

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Comparing Coro/Coro/State.xs (file contents): Revision 1.110 by root, Tue Nov 28 23:08:07 2006 UTC vs. Revision 1.184 by root, Thu Oct 4 13:45:56 2007 UTC

Diff Legend

Comparing Coro/Coro/State.xs (file contents):
Revision 1.110 by root, Tue Nov 28 23:08:07 2006 UTC vs.
Revision 1.184 by root, Thu Oct 4 13:45:56 2007 UTC