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

Comparing Coro/Coro/State.xs (file contents):
Revision 1.109 by root, Mon Nov 27 18:45:29 2006 UTC vs.
Revision 1.181 by root, Wed Oct 3 17:37:33 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	GV 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	GV *defoutgv;
		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	PL_defoutgv = c->deffh;
		396	PL_rs = c->irssv;
		397	GvSV (irsgv) = c->irssv_sv;
289		398
290	{	399	{
291	dSP;	400	dSP;
292	CV *cv;	401	CV *cv;
293		402
294	/* now do the ugly restore mess */	403	/* now do the ugly restore mess */
295	while ((cv = (CV *)POPs))	404	while ((cv = (CV *)POPs))
296	{	405	{
297	put_padlist (cv); /* mark this padlist as available */	406	put_padlist (aTHX_ cv); /* mark this padlist as available */
298	CvDEPTH (cv) = PTR2IV (POPs);	407	CvDEPTH (cv) = PTR2IV (POPs);
299	CvPADLIST (cv) = (AV *)POPs;	408	CvPADLIST (cv) = (AV *)POPs;
300	}	409	}
301		410
302	PUTBACK;	411	PUTBACK;
303	}	412	}
304	}	413	}
305		414
306	static void	415	static void
307	save_state(Coro__State c, int flags)	416	save_perl (pTHX_ Coro__State c)
308	{	417	{
309	{	418	{
310	dSP;	419	dSP;
311	I32 cxix = cxstack_ix;	420	I32 cxix = cxstack_ix;
312	PERL_CONTEXT *ccstk = cxstack;	421	PERL_CONTEXT *ccstk = cxstack;
…		…
315	/*	424	/*
316	* the worst thing you can imagine happens first - we have to save	425	* the worst thing you can imagine happens first - we have to save
317	* (and reinitialize) all cv's in the whole callchain :(	426	* (and reinitialize) all cv's in the whole callchain :(
318	*/	427	*/
319		428
320	PUSHs (Nullsv);	429	XPUSHs (Nullsv);
321	/* this loop was inspired by pp_caller */	430	/* this loop was inspired by pp_caller */
322	for (;;)	431	for (;;)
323	{	432	{
324	while (cxix >= 0)	433	while (cxix >= 0)
325	{	434	{
326	PERL_CONTEXT *cx = &ccstk[cxix--];	435	PERL_CONTEXT *cx = &ccstk[cxix--];
327		436
328	if (CxTYPE(cx) == CXt_SUB)	437	if (CxTYPE (cx) == CXt_SUB \|\| CxTYPE (cx) == CXt_FORMAT)
329	{	438	{
330	CV *cv = cx->blk_sub.cv;	439	CV *cv = cx->blk_sub.cv;
331		440
332	if (CvDEPTH (cv))	441	if (CvDEPTH (cv))
333	{	442	{
334	EXTEND (SP, 3);	443	EXTEND (SP, 3);
335
336	PUSHs ((SV *)CvPADLIST(cv));	444	PUSHs ((SV *)CvPADLIST (cv));
337	PUSHs (INT2PTR (SV *, CvDEPTH (cv)));	445	PUSHs (INT2PTR (SV *, CvDEPTH (cv)));
338	PUSHs ((SV *)cv);	446	PUSHs ((SV *)cv);
339		447
340	CvDEPTH (cv) = 0;	448	CvDEPTH (cv) = 0;
341	get_padlist (cv);	449	get_padlist (aTHX_ cv);
342	}	450	}
343	}	451	}
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	}	452	}
353		453
354	if (top_si->si_type == PERLSI_MAIN)	454	if (top_si->si_type == PERLSI_MAIN)
355	break;	455	break;
356		456
357	top_si = top_si->si_prev;	457	top_si = top_si->si_prev;
358	ccstk = top_si->si_cxstack;	458	ccstk = top_si->si_cxstack;
359	cxix = top_si->si_cxix;	459	cxix = top_si->si_cxix;
360	}	460	}
361		461
362	PUTBACK;	462	PUTBACK;
363	}	463	}
364		464
365	c->defav = flags & TRANSFER_SAVE_DEFAV ? (AV *)SvREFCNT_inc (GvAV (PL_defgv)) : 0;	465	c->defav = GvAV (PL_defgv);
366	c->defsv = flags & TRANSFER_SAVE_DEFSV ? SvREFCNT_inc (DEFSV) : 0;	466	c->defsv = DEFSV;
367	c->errsv = flags & TRANSFER_SAVE_ERRSV ? SvREFCNT_inc (ERRSV) : 0;	467	c->errsv = ERRSV;
		468	c->deffh = PL_defoutgv;
		469	c->irssv = PL_rs;
		470	c->irssv_sv = GvSV (irsgv);
368		471
369	#define VAR(name,type)c->name = PL_ ## name;	472	#define VAR(name,type)c->name = PL_ ## name;
370	# include "state.h"	473	# include "state.h"
371	#undef VAR	474	#undef VAR
372	}	475	}
…		…
375	* allocate various perl stacks. This is an exact copy	478	* allocate various perl stacks. This is an exact copy
376	* of perl.c:init_stacks, except that it uses less memory	479	* of perl.c:init_stacks, except that it uses less memory
377	* on the (sometimes correct) assumption that coroutines do	480	* on the (sometimes correct) assumption that coroutines do
378	* not usually need a lot of stackspace.	481	* not usually need a lot of stackspace.
379	*/	482	*/
		483	#if CORO_PREFER_PERL_FUNCTIONS
		484	# define coro_init_stacks init_stacks
		485	#else
380	static void	486	static void
381	coro_init_stacks ()	487	coro_init_stacks (pTHX)
382	{	488	{
383	PL_curstackinfo = new_stackinfo(96, 1024/sizeof(PERL_CONTEXT) - 1);	489	PL_curstackinfo = new_stackinfo(64, 6);
384	PL_curstackinfo->si_type = PERLSI_MAIN;	490	PL_curstackinfo->si_type = PERLSI_MAIN;
385	PL_curstack = PL_curstackinfo->si_stack;	491	PL_curstack = PL_curstackinfo->si_stack;
386	PL_mainstack = PL_curstack; /* remember in case we switch stacks */	492	PL_mainstack = PL_curstack; /* remember in case we switch stacks */
387		493
388	PL_stack_base = AvARRAY(PL_curstack);	494	PL_stack_base = AvARRAY(PL_curstack);
389	PL_stack_sp = PL_stack_base;	495	PL_stack_sp = PL_stack_base;
390	PL_stack_max = PL_stack_base + AvMAX(PL_curstack);	496	PL_stack_max = PL_stack_base + AvMAX(PL_curstack);
391		497
392	New(50,PL_tmps_stack,96,SV*);	498	New(50,PL_tmps_stack,64,SV*);
393	PL_tmps_floor = -1;	499	PL_tmps_floor = -1;
394	PL_tmps_ix = -1;	500	PL_tmps_ix = -1;
395	PL_tmps_max = 96;	501	PL_tmps_max = 64;
396		502
397	New(54,PL_markstack,16,I32);	503	New(54,PL_markstack,16,I32);
398	PL_markstack_ptr = PL_markstack;	504	PL_markstack_ptr = PL_markstack;
399	PL_markstack_max = PL_markstack + 16;	505	PL_markstack_max = PL_markstack + 16;
400		506
…		…
404		510
405	New(54,PL_scopestack,16,I32);	511	New(54,PL_scopestack,16,I32);
406	PL_scopestack_ix = 0;	512	PL_scopestack_ix = 0;
407	PL_scopestack_max = 16;	513	PL_scopestack_max = 16;
408		514
409	New(54,PL_savestack,96,ANY);	515	New(54,PL_savestack,64,ANY);
410	PL_savestack_ix = 0;	516	PL_savestack_ix = 0;
411	PL_savestack_max = 96;	517	PL_savestack_max = 64;
412		518
413	#if !PERL_VERSION_ATLEAST (5,9,0)	519	#if !PERL_VERSION_ATLEAST (5,9,0)
414	New(54,PL_retstack,8,OP*);	520	New(54,PL_retstack,4,OP*);
415	PL_retstack_ix = 0;	521	PL_retstack_ix = 0;
416	PL_retstack_max = 8;	522	PL_retstack_max = 4;
417	#endif	523	#endif
418	}	524	}
		525	#endif
419		526
420	/*	527	/*
421	* destroy the stacks, the callchain etc...	528	* destroy the stacks, the callchain etc...
422	*/	529	*/
423	static void	530	static void
424	coro_destroy_stacks ()	531	coro_destroy_stacks (pTHX)
425	{	532	{
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)	533	while (PL_curstackinfo->si_next)
438	PL_curstackinfo = PL_curstackinfo->si_next;	534	PL_curstackinfo = PL_curstackinfo->si_next;
439		535
440	while (PL_curstackinfo)	536	while (PL_curstackinfo)
441	{	537	{
442	PERL_SI *p = PL_curstackinfo->si_prev;	538	PERL_SI *p = PL_curstackinfo->si_prev;
443		539
444	{ /D//remove/
445	dSP;
446	SWITCHSTACK (PL_curstack, PL_curstackinfo->si_stack);
447	PUTBACK; /* possibly superfluous */
448	}
449
450	if (!IN_DESTRUCT)	540	if (!IN_DESTRUCT)
451	{
452	dounwind (-1);/D//remove/
453	SvREFCNT_dec (PL_curstackinfo->si_stack);	541	SvREFCNT_dec (PL_curstackinfo->si_stack);
454	}
455		542
456	Safefree (PL_curstackinfo->si_cxstack);	543	Safefree (PL_curstackinfo->si_cxstack);
457	Safefree (PL_curstackinfo);	544	Safefree (PL_curstackinfo);
458	PL_curstackinfo = p;	545	PL_curstackinfo = p;
459	}	546	}
…		…
465	#if !PERL_VERSION_ATLEAST (5,9,0)	552	#if !PERL_VERSION_ATLEAST (5,9,0)
466	Safefree (PL_retstack);	553	Safefree (PL_retstack);
467	#endif	554	#endif
468	}	555	}
469		556
470	static void	557	static size_t
471	setup_coro (struct coro *coro)	558	coro_rss (pTHX_ struct coro *coro)
		559	{
		560	size_t rss = sizeof (coro);
		561
		562	if (coro->mainstack)
		563	{
		564	if (coro->flags & CF_RUNNING)
		565	{
		566	#define VAR(name,type)coro->name = PL_ ## name;
		567	# include "state.h"
		568	#undef VAR
		569	}
		570
		571	rss += sizeof (coro->curstackinfo);
		572	rss += sizeof (struct xpvav) + (1 + AvFILL (coro->curstackinfo->si_stack)) * sizeof (SV *);
		573	rss += (coro->curstackinfo->si_cxmax + 1) * sizeof (PERL_CONTEXT);
		574	rss += sizeof (struct xpvav) + (1 + AvFILL (coro->curstack)) * sizeof (SV *);
		575	rss += coro->tmps_max * sizeof (SV *);
		576	rss += (coro->markstack_max - coro->markstack_ptr) * sizeof (I32);
		577	rss += coro->scopestack_max * sizeof (I32);
		578	rss += coro->savestack_max * sizeof (ANY);
		579
		580	#if !PERL_VERSION_ATLEAST (5,9,0)
		581	rss += coro->retstack_max * sizeof (OP *);
		582	#endif
		583	}
		584
		585	return rss;
		586	}
		587
		588	/ coroutine stack handling **********************************************/
		589
		590	static void
		591	coro_setup (pTHX_ struct coro *coro)
472	{	592	{
473	/*	593	/*
474	* emulate part of the perl startup here.	594	* emulate part of the perl startup here.
475	*/	595	*/
476
477	coro_init_stacks ();	596	coro_init_stacks (aTHX);
478		597
		598	PL_runops = RUNOPS_DEFAULT;
		599	PL_curcop = &PL_compiling;
		600	PL_in_eval = EVAL_NULL;
479	PL_curcop = 0;	601	PL_comppad = 0;
480	PL_in_eval = 0;
481	PL_curpm = 0;	602	PL_curpm = 0;
		603	PL_localizing = 0;
		604	PL_dirty = 0;
		605	PL_restartop = 0;
		606
		607	GvSV (PL_defgv) = NEWSV (0, 0);
		608	GvAV (PL_defgv) = coro->args; coro->args = 0;
		609	GvSV (PL_errgv) = NEWSV (0, 0);
		610	GvSV (irsgv) = newSVpvn ("\n", 1); sv_magic (GvSV (irsgv), (SV *)irsgv, PERL_MAGIC_sv, "/", 0);
		611	PL_rs = newSVsv (GvSV (irsgv));
		612
		613	{
		614	IO *io = newIO ();
		615	PL_defoutgv = newGVgen ("Coro");
		616	GvIOp(PL_defoutgv) = io;
		617	IoTYPE (io) = IoTYPE_WRONLY;
		618	IoOFP (io) = IoIFP (io) = PerlIO_stdout ();
		619	IoFLAGS (io) \|= IOf_FLUSH;
		620	}
482		621
483	{	622	{
484	dSP;	623	dSP;
485	LOGOP myop;	624	LOGOP myop;
486		625
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);	626	Zero (&myop, 1, LOGOP);
494	myop.op_next = Nullop;	627	myop.op_next = Nullop;
495	myop.op_flags = OPf_WANT_VOID;	628	myop.op_flags = OPf_WANT_VOID;
496		629
		630	PUSHMARK (SP);
		631	XPUSHs (av_shift (GvAV (PL_defgv)));
		632	PUTBACK;
497	PL_op = (OP *)&myop;	633	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);	634	PL_op = PL_ppaddr[OP_ENTERSUB](aTHX);
503	SPAGAIN;	635	SPAGAIN;
504
505	ENTER; /* necessary e.g. for dounwind */
506	}	636	}
507	}
508		637
		638	ENTER; /* necessary e.g. for dounwind */
		639	}
		640
509	static void	641	static void
		642	coro_destroy (pTHX_ struct coro *coro)
		643	{
		644	if (!IN_DESTRUCT)
		645	{
		646	/* restore all saved variables and stuff */
		647	LEAVE_SCOPE (0);
		648	assert (PL_tmps_floor == -1);
		649
		650	/* free all temporaries */
		651	FREETMPS;
		652	assert (PL_tmps_ix == -1);
		653
		654	/* unwind all extra stacks */
		655	POPSTACK_TO (PL_mainstack);
		656
		657	/* unwind main stack */
		658	dounwind (-1);
		659	}
		660
		661	SvREFCNT_dec (GvSV (PL_defgv));
		662	SvREFCNT_dec (GvAV (PL_defgv));
		663	SvREFCNT_dec (GvSV (PL_errgv));
		664	SvREFCNT_dec (PL_defoutgv);
		665	SvREFCNT_dec (PL_rs);
		666	SvREFCNT_dec (GvSV (irsgv));
		667
		668	SvREFCNT_dec (coro->defoutgv);
		669	//SvREFCNT_dec (coro->throw);
		670
		671	coro_destroy_stacks (aTHX);
		672	}
		673
		674	static void
510	free_coro_mortal ()	675	free_coro_mortal (pTHX)
511	{	676	{
512	if (coro_mortal)	677	if (coro_mortal)
513	{	678	{
514	SvREFCNT_dec (coro_mortal);	679	SvREFCNT_dec (coro_mortal);
515	coro_mortal = 0;	680	coro_mortal = 0;
516	}	681	}
517	}	682	}
518		683
		684	static int
		685	runops_trace (pTHX)
		686	{
		687	COP *oldcop = 0;
		688	int oldcxix = -2;
		689	struct coro coro = SvSTATE (coro_current); / trace cctx is tied to specific coro */
		690	coro_cctx *cctx = coro->cctx;
		691
		692	while ((PL_op = CALL_FPTR (PL_op->op_ppaddr) (aTHX)))
		693	{
		694	PERL_ASYNC_CHECK ();
		695
		696	if (cctx->flags & CC_TRACE_ALL)
		697	{
		698	if (PL_op->op_type == OP_LEAVESUB && cctx->flags & CC_TRACE_SUB)
		699	{
		700	PERL_CONTEXT *cx = &cxstack[cxstack_ix];
		701	SV bot, top;
		702	AV av = newAV (); / return values */
		703	SV **cb;
		704	dSP;
		705
		706	GV *gv = CvGV (cx->blk_sub.cv);
		707	SV *fullname = sv_2mortal (newSV (0));
		708	if (isGV (gv))
		709	gv_efullname3 (fullname, gv, 0);
		710
		711	bot = PL_stack_base + cx->blk_oldsp + 1;
		712	top = cx->blk_gimme == G_ARRAY ? SP + 1
		713	: cx->blk_gimme == G_SCALAR ? bot + 1
		714	: bot;
		715
		716	while (bot < top)
		717	av_push (av, SvREFCNT_inc (*bot++));
		718
		719	PL_runops = RUNOPS_DEFAULT;
		720	ENTER;
		721	SAVETMPS;
		722	EXTEND (SP, 3);
		723	PUSHMARK (SP);
		724	PUSHs (&PL_sv_no);
		725	PUSHs (fullname);
		726	PUSHs (sv_2mortal (newRV_noinc ((SV *)av)));
		727	PUTBACK;
		728	cb = hv_fetch ((HV *)SvRV (coro_current), "_trace_sub_cb", sizeof ("_trace_sub_cb") - 1, 0);
		729	if (cb) call_sv (*cb, G_KEEPERR \| G_EVAL \| G_VOID \| G_DISCARD);
		730	SPAGAIN;
		731	FREETMPS;
		732	LEAVE;
		733	PL_runops = runops_trace;
		734	}
		735
		736	if (oldcop != PL_curcop)
		737	{
		738	oldcop = PL_curcop;
		739
		740	if (PL_curcop != &PL_compiling)
		741	{
		742	SV **cb;
		743
		744	if (oldcxix != cxstack_ix && cctx->flags & CC_TRACE_SUB)
		745	{
		746	PERL_CONTEXT *cx = &cxstack[cxstack_ix];
		747
		748	if (CxTYPE (cx) == CXt_SUB && oldcxix < cxstack_ix)
		749	{
		750	runops_proc_t old_runops = PL_runops;
		751	dSP;
		752	GV *gv = CvGV (cx->blk_sub.cv);
		753	SV *fullname = sv_2mortal (newSV (0));
		754
		755	if (isGV (gv))
		756	gv_efullname3 (fullname, gv, 0);
		757
		758	PL_runops = RUNOPS_DEFAULT;
		759	ENTER;
		760	SAVETMPS;
		761	EXTEND (SP, 3);
		762	PUSHMARK (SP);
		763	PUSHs (&PL_sv_yes);
		764	PUSHs (fullname);
		765	PUSHs (cx->blk_sub.hasargs ? sv_2mortal (newRV_inc ((SV *)cx->blk_sub.argarray)) : &PL_sv_undef);
		766	PUTBACK;
		767	cb = hv_fetch ((HV *)SvRV (coro_current), "_trace_sub_cb", sizeof ("_trace_sub_cb") - 1, 0);
		768	if (cb) call_sv (*cb, G_KEEPERR \| G_EVAL \| G_VOID \| G_DISCARD);
		769	SPAGAIN;
		770	FREETMPS;
		771	LEAVE;
		772	PL_runops = runops_trace;
		773	}
		774
		775	oldcxix = cxstack_ix;
		776	}
		777
		778	if (cctx->flags & CC_TRACE_LINE)
		779	{
		780	dSP;
		781
		782	PL_runops = RUNOPS_DEFAULT;
		783	ENTER;
		784	SAVETMPS;
		785	EXTEND (SP, 3);
		786	PL_runops = RUNOPS_DEFAULT;
		787	PUSHMARK (SP);
		788	PUSHs (sv_2mortal (newSVpv (OutCopFILE (oldcop), 0)));
		789	PUSHs (sv_2mortal (newSViv (CopLINE (oldcop))));
		790	PUTBACK;
		791	cb = hv_fetch ((HV *)SvRV (coro_current), "_trace_line_cb", sizeof ("_trace_line_cb") - 1, 0);
		792	if (cb) call_sv (*cb, G_KEEPERR \| G_EVAL \| G_VOID \| G_DISCARD);
		793	SPAGAIN;
		794	FREETMPS;
		795	LEAVE;
		796	PL_runops = runops_trace;
		797	}
		798	}
		799	}
		800	}
		801	}
		802
		803	TAINT_NOT;
		804	return 0;
		805	}
		806
		807	/* inject a fake call to Coro::State::_cctx_init into the execution */
		808	/* _cctx_init should be careful, as it could be called at almost any time */
		809	/* during execution of a perl program */
519	static void NOINLINE	810	static void NOINLINE
520	prepare_cctx (coro_cctx *cctx)	811	prepare_cctx (pTHX_ coro_cctx *cctx)
521	{	812	{
522	dSP;	813	dSP;
523	LOGOP myop;	814	LOGOP myop;
524		815
		816	PL_top_env = &PL_start_env;
		817
		818	if (cctx->flags & CC_TRACE)
		819	PL_runops = runops_trace;
		820
525	Zero (&myop, 1, LOGOP);	821	Zero (&myop, 1, LOGOP);
526	myop.op_next = PL_op;	822	myop.op_next = PL_op;
527	myop.op_flags = OPf_WANT_VOID;	823	myop.op_flags = OPf_WANT_VOID \| OPf_STACKED;
528
529	sv_setiv (get_sv ("Coro::State::_cctx", FALSE), PTR2IV (cctx));
530		824
531	PUSHMARK (SP);	825	PUSHMARK (SP);
		826	EXTEND (SP, 2);
		827	PUSHs (sv_2mortal (newSViv (PTR2IV (cctx))));
532	XPUSHs ((SV *)get_cv ("Coro::State::_cctx_init", FALSE));	828	PUSHs ((SV *)get_cv ("Coro::State::_cctx_init", FALSE));
533	PUTBACK;	829	PUTBACK;
		830	PL_op = (OP *)&myop;
534	PL_restartop = PL_ppaddr[OP_ENTERSUB](aTHX);	831	PL_op = PL_ppaddr[OP_ENTERSUB](aTHX);
535	SPAGAIN;	832	SPAGAIN;
536	}	833	}
537		834
		835	/*
		836	* this is a _very_ stripped down perl interpreter ;)
		837	*/
538	static void	838	static void
539	coro_run (void *arg)	839	coro_run (void *arg)
540	{	840	{
		841	dTHX;
		842
541	/* coro_run is the alternative epilogue of transfer() */	843	/* coro_run is the alternative tail of transfer(), so unlock here. */
542	UNLOCK;	844	UNLOCK;
543		845
		846	/* we now skip the entersub that lead to transfer() */
		847	PL_op = PL_op->op_next;
		848
		849	/* inject a fake subroutine call to cctx_init */
		850	prepare_cctx (aTHX_ (coro_cctx *)arg);
		851
		852	/* somebody or something will hit me for both perl_run and PL_restartop */
		853	PL_restartop = PL_op;
		854	perl_run (PL_curinterp);
		855
544	/*	856	/*
545	* this is a _very_ stripped down perl interpreter ;)	857	* If perl-run returns we assume exit() was being called or the coro
		858	* fell off the end, which seems to be the only valid (non-bug)
		859	* reason for perl_run to return. We try to exit by jumping to the
		860	* bootstrap-time "top" top_env, as we cannot restore the "main"
		861	* coroutine as Coro has no such concept
546	*/	862	*/
547	PL_top_env = &PL_start_env;	863	PL_top_env = main_top_env;
548		864	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	}	865	}
558		866
559	static coro_cctx *	867	static coro_cctx *
560	cctx_new ()	868	cctx_new ()
561	{	869	{
562	coro_cctx *cctx;	870	coro_cctx *cctx;
		871	void *stack_start;
		872	size_t stack_size;
563		873
564	++cctx_count;	874	++cctx_count;
565		875
566	New (0, cctx, 1, coro_cctx);	876	Newz (0, cctx, 1, coro_cctx);
567		877
568	#if HAVE_MMAP	878	#if HAVE_MMAP
569		879
570	cctx->ssize = ((STACKSIZE * sizeof (long) + PAGESIZE - 1) / PAGESIZE + STACKGUARD) * PAGESIZE;	880	cctx->ssize = ((coro_stacksize * sizeof (long) + PAGESIZE - 1) / PAGESIZE + CORO_STACKGUARD) * PAGESIZE;
571	/* mmap suppsedly does allocate-on-write for us */	881	/* 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);	882	cctx->sptr = mmap (0, cctx->ssize, PROT_EXEC\|PROT_READ\|PROT_WRITE, MAP_PRIVATE\|MAP_ANONYMOUS, 0, 0);
573		883
574	if (cctx->sptr == (void *)-1)	884	if (cctx->sptr != (void *)-1)
575	{
576	perror ("FATAL: unable to mmap stack for coroutine");
577	_exit (EXIT_FAILURE);
578	}	885	{
579
580	# if STACKGUARD	886	# if CORO_STACKGUARD
581	mprotect (cctx->sptr, STACKGUARD * PAGESIZE, PROT_NONE);	887	mprotect (cctx->sptr, CORO_STACKGUARD * PAGESIZE, PROT_NONE);
582	# endif	888	# endif
		889	stack_start = CORO_STACKGUARD * PAGESIZE + (char *)cctx->sptr;
		890	stack_size = cctx->ssize - CORO_STACKGUARD * PAGESIZE;
		891	cctx->flags \|= CC_MAPPED;
		892	}
		893	else
		894	#endif
		895	{
		896	cctx->ssize = coro_stacksize * (long)sizeof (long);
		897	New (0, cctx->sptr, coro_stacksize, long);
583		898
584	#else
585
586	cctx->ssize = STACKSIZE * (long)sizeof (long);
587	New (0, cctx->sptr, STACKSIZE, long);
588
589	if (!cctx->sptr)	899	if (!cctx->sptr)
590	{	900	{
591	perror ("FATAL: unable to malloc stack for coroutine");	901	perror ("FATAL: unable to allocate stack for coroutine");
592	_exit (EXIT_FAILURE);	902	_exit (EXIT_FAILURE);
593	}	903	}
594		904
595	#endif	905	stack_start = cctx->sptr;
		906	stack_size = cctx->ssize;
		907	}
596		908
597	#if USE_VALGRIND	909	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);	910	coro_create (&cctx->cctx, coro_run, (void *)cctx, stack_start, stack_size);
605		911
606	return cctx;	912	return cctx;
607	}	913	}
608		914
609	static void	915	static void
610	cctx_free (coro_cctx *cctx)	916	cctx_destroy (coro_cctx *cctx)
611	{	917	{
612	if (!cctx)	918	if (!cctx)
613	return;	919	return;
614		920
615	--cctx_count;	921	--cctx_count;
616		922
617	#if USE_VALGRIND	923	#if CORO_USE_VALGRIND
618	VALGRIND_STACK_DEREGISTER (cctx->valgrind_id);	924	VALGRIND_STACK_DEREGISTER (cctx->valgrind_id);
619	#endif	925	#endif
620		926
621	#if HAVE_MMAP	927	#if HAVE_MMAP
		928	if (cctx->flags & CC_MAPPED)
622	munmap (cctx->sptr, cctx->ssize);	929	munmap (cctx->sptr, cctx->ssize);
623	#else	930	else
		931	#endif
624	Safefree (cctx->sptr);	932	Safefree (cctx->sptr);
625	#endif
626		933
627	Safefree (cctx);	934	Safefree (cctx);
628	}	935	}
629		936
630	static coro_cctx *	937	static coro_cctx *
631	cctx_get ()	938	cctx_get (pTHX)
632	{	939	{
633	coro_cctx *cctx;
634
635	if (cctx_first)	940	while (cctx_first)
636	{	941	{
		942	coro_cctx *cctx = cctx_first;
		943	cctx_first = cctx->next;
637	--cctx_idle;	944	--cctx_idle;
638	cctx = cctx_first;	945
639	cctx_first = cctx->next;	946	if (cctx->ssize >= coro_stacksize && !(cctx->flags & CC_NOREUSE))
640	}	947	return cctx;
641	else	948
642	{	949	cctx_destroy (cctx);
643	cctx = cctx_new ();
644	PL_op = PL_op->op_next;
645	}	950	}
646		951
647	return cctx;	952	return cctx_new ();
648	}	953	}
649		954
650	static void	955	static void
651	cctx_put (coro_cctx *cctx)	956	cctx_put (coro_cctx *cctx)
652	{	957	{
		958	/* free another cctx if overlimit */
		959	if (cctx_idle >= MAX_IDLE_CCTX)
		960	{
		961	coro_cctx *first = cctx_first;
		962	cctx_first = first->next;
		963	--cctx_idle;
		964
		965	cctx_destroy (first);
		966	}
		967
653	++cctx_idle;	968	++cctx_idle;
654	cctx->next = cctx_first;	969	cctx->next = cctx_first;
655	cctx_first = cctx;	970	cctx_first = cctx;
656	}	971	}
657		972
658	/* never call directly, always through the coro_state_transfer global variable */	973	/ coroutine switching ***************************************************/
		974
659	static void NOINLINE	975	static void NOINLINE
		976	transfer_check (pTHX_ struct coro prev, struct coro next)
		977	{
		978	if (prev != next)
		979	{
		980	if (!(prev->flags & (CF_RUNNING \| CF_NEW)))
		981	croak ("Coro::State::transfer called with non-running/new prev Coro::State, but can only transfer from running or new states");
		982
		983	if (next->flags & CF_RUNNING)
		984	croak ("Coro::State::transfer called with running next Coro::State, but can only transfer to inactive states");
		985
		986	if (next->flags & CF_DESTROYED)
		987	croak ("Coro::State::transfer called with destroyed next Coro::State, but can only transfer to inactive states");
		988
		989	if (PL_lex_state != LEX_NOTPARSING)
		990	croak ("Coro::State::transfer called while parsing, but this is not supported");
		991	}
		992	}
		993
		994	/* always use the TRANSFER macro */
		995	static void NOINLINE
660	transfer (struct coro prev, struct coro next, int flags)	996	transfer (pTHX_ struct coro prev, struct coro next)
661	{	997	{
662	dSTACKLEVEL;	998	dSTACKLEVEL;
663		999
664	/* sometimes transfer is only called to set idle_sp */	1000	/* sometimes transfer is only called to set idle_sp */
665	if (flags == TRANSFER_SET_STACKLEVEL)	1001	if (!next)
		1002	{
666	((coro_cctx *)prev)->idle_sp = STACKLEVEL;	1003	((coro_cctx *)prev)->idle_sp = STACKLEVEL;
		1004	assert (((coro_cctx )prev)->idle_te = PL_top_env); / just for the side-effect when asserts are enabled */
		1005	}
667	else if (prev != next)	1006	else if (prev != next)
668	{	1007	{
669	coro_cctx *prev__cctx;	1008	coro_cctx *prev__cctx;
670		1009
		1010	if (prev->flags & CF_NEW)
		1011	{
		1012	/* create a new empty context */
		1013	Newz (0, prev->cctx, 1, coro_cctx);
		1014	prev->flags &= ~CF_NEW;
		1015	prev->flags \|= CF_RUNNING;
		1016	}
		1017
		1018	prev->flags &= ~CF_RUNNING;
		1019	next->flags \|= CF_RUNNING;
		1020
671	LOCK;	1021	LOCK;
672		1022
673	if (next->mainstack)	1023	if (next->flags & CF_NEW)
674	{	1024	{
675	/* coroutine already started */	1025	/* need to start coroutine */
676	SAVE (prev, flags);	1026	next->flags &= ~CF_NEW;
677	LOAD (next);	1027	/* first get rid of the old state */
		1028	save_perl (aTHX_ prev);
		1029	/* setup coroutine call */
		1030	coro_setup (aTHX_ next);
678	}	1031	}
679	else	1032	else
680	{	1033	{
681	/* need to start coroutine */	1034	/* coroutine already started */
682	/* first get rid of the old state */	1035	save_perl (aTHX_ prev);
683	SAVE (prev, -1);	1036	load_perl (aTHX_ next);
684	/* setup coroutine call */
685	setup_coro (next);
686	/* need a stack */
687	next->cctx = 0;
688	}	1037	}
689		1038
690	if (!prev->cctx)
691	/* create a new empty context */
692	Newz (0, prev->cctx, 1, coro_cctx);
693
694	prev__cctx = prev->cctx;	1039	prev__cctx = prev->cctx;
695		1040
696	/* possibly "free" the cctx */	1041	/* possibly "free" the cctx */
697	if (prev__cctx->idle_sp == STACKLEVEL)	1042	if (prev__cctx->idle_sp == STACKLEVEL && !(prev__cctx->flags & CC_TRACE))
698	{	1043	{
		1044	/* I assume that STACKLEVEL is a stronger indicator than PL_top_env changes */
		1045	assert (("ERROR: current top_env must equal previous top_env", PL_top_env == prev__cctx->idle_te));
		1046
		1047	prev->cctx = 0;
		1048
699	cctx_put (prev__cctx);	1049	cctx_put (prev__cctx);
700	prev->cctx = 0;
701	}	1050	}
702		1051
		1052	++next->usecount;
		1053
703	if (!next->cctx)	1054	if (!next->cctx)
704	next->cctx = cctx_get ();	1055	next->cctx = cctx_get (aTHX);
705		1056
706	if (prev__cctx != next->cctx)	1057	if (prev__cctx != next->cctx)
707	{	1058	{
708	prev__cctx->top_env = PL_top_env;	1059	prev__cctx->top_env = PL_top_env;
709	PL_top_env = next->cctx->top_env;	1060	PL_top_env = next->cctx->top_env;
710	coro_transfer (&prev__cctx->cctx, &next->cctx->cctx);	1061	coro_transfer (&prev__cctx->cctx, &next->cctx->cctx);
711	}	1062	}
712		1063
713	free_coro_mortal ();	1064	free_coro_mortal (aTHX);
714
715	UNLOCK;	1065	UNLOCK;
716	}	1066	}
717	}	1067	}
718		1068
719	struct transfer_args	1069	struct transfer_args
720	{	1070	{
721	struct coro prev, next;	1071	struct coro prev, next;
722	int flags;
723	};	1072	};
724		1073
725	#define TRANSFER(ta) transfer ((ta).prev, (ta).next, (ta).flags)	1074	#define TRANSFER(ta) transfer (aTHX_ (ta).prev, (ta).next)
		1075	#define TRANSFER_CHECK(ta) transfer_check (aTHX_ (ta).prev, (ta).next)
726		1076
		1077	/ high level stuff ******************************************************/
		1078
727	static void	1079	static int
728	coro_state_destroy (struct coro *coro)	1080	coro_state_destroy (pTHX_ struct coro *coro)
729	{	1081	{
730	if (coro->refcnt--)	1082	if (coro->flags & CF_DESTROYED)
731	return;	1083	return 0;
		1084
		1085	coro->flags \|= CF_DESTROYED;
		1086
		1087	if (coro->flags & CF_READY)
		1088	{
		1089	/* reduce nready, as destroying a ready coro effectively unreadies it */
		1090	/* alternative: look through all ready queues and remove the coro */
		1091	LOCK;
		1092	--coro_nready;
		1093	UNLOCK;
		1094	}
		1095	else
		1096	coro->flags \|= CF_READY; /* make sure it is NOT put into the readyqueue */
732		1097
733	if (coro->mainstack && coro->mainstack != main_mainstack)	1098	if (coro->mainstack && coro->mainstack != main_mainstack)
734	{	1099	{
735	struct coro temp;	1100	struct coro temp;
736		1101
737	SAVE ((&temp), TRANSFER_SAVE_ALL);	1102	if (coro->flags & CF_RUNNING)
738	LOAD (coro);	1103	croak ("FATAL: tried to destroy currently running coroutine");
739		1104
740	coro_destroy_stacks ();	1105	save_perl (aTHX_ &temp);
		1106	load_perl (aTHX_ coro);
741		1107
		1108	coro_destroy (aTHX_ coro);
		1109
742	LOAD ((&temp)); /* this will get rid of defsv etc.. */	1110	load_perl (aTHX_ &temp); /* this will get rid of defsv etc.. */
743		1111
744	coro->mainstack = 0;	1112	coro->mainstack = 0;
745	}	1113	}
746		1114
747	cctx_free (coro->cctx);	1115	cctx_destroy (coro->cctx);
748	SvREFCNT_dec (coro->args);	1116	SvREFCNT_dec (coro->args);
749	Safefree (coro);	1117
		1118	if (coro->next) coro->next->prev = coro->prev;
		1119	if (coro->prev) coro->prev->next = coro->next;
		1120	if (coro == coro_first) coro_first = coro->next;
		1121
		1122	return 1;
750	}	1123	}
751		1124
752	static int	1125	static int
753	coro_state_clear (pTHX_ SV sv, MAGIC mg)	1126	coro_state_free (pTHX_ SV sv, MAGIC mg)
754	{	1127	{
755	struct coro coro = (struct coro )mg->mg_ptr;	1128	struct coro coro = (struct coro )mg->mg_ptr;
756	mg->mg_ptr = 0;	1129	mg->mg_ptr = 0;
757		1130
		1131	coro->hv = 0;
		1132
		1133	if (--coro->refcnt < 0)
		1134	{
758	coro_state_destroy (coro);	1135	coro_state_destroy (aTHX_ coro);
		1136	Safefree (coro);
		1137	}
759		1138
760	return 0;	1139	return 0;
761	}	1140	}
762		1141
763	static int	1142	static int
…		…
770	return 0;	1149	return 0;
771	}	1150	}
772		1151
773	static MGVTBL coro_state_vtbl = {	1152	static MGVTBL coro_state_vtbl = {
774	0, 0, 0, 0,	1153	0, 0, 0, 0,
775	coro_state_clear,	1154	coro_state_free,
776	0,	1155	0,
777	#ifdef MGf_DUP	1156	#ifdef MGf_DUP
778	coro_state_dup,	1157	coro_state_dup,
779	#else	1158	#else
780	# define MGf_DUP 0	1159	# define MGf_DUP 0
781	#endif	1160	#endif
782	};	1161	};
783		1162
784	static struct coro *
785	SvSTATE (SV *coro)
786	{
787	HV *stash;
788	MAGIC *mg;
789
790	if (SvROK (coro))
791	coro = SvRV (coro);
792
793	stash = SvSTASH (coro);
794	if (stash != coro_stash && stash != coro_state_stash)
795	{
796	/* very slow, but rare, check */
797	if (!sv_derived_from (sv_2mortal (newRV_inc (coro)), "Coro::State"))
798	croak ("Coro::State object required");
799	}
800
801	mg = SvMAGIC (coro);
802	assert (mg->mg_type == PERL_MAGIC_ext);
803	return (struct coro *)mg->mg_ptr;
804	}
805
806	static void	1163	static void
807	prepare_transfer (struct transfer_args ta, SV prev, SV *next, int flags)	1164	prepare_transfer (pTHX_ struct transfer_args ta, SV prev_sv, SV *next_sv)
808	{	1165	{
809	ta->prev = SvSTATE (prev);	1166	ta->prev = SvSTATE (prev_sv);
810	ta->next = SvSTATE (next);	1167	ta->next = SvSTATE (next_sv);
811	ta->flags = flags;	1168	TRANSFER_CHECK (*ta);
812	}	1169	}
813		1170
814	static void	1171	static void
815	api_transfer (SV prev, SV next, int flags)	1172	api_transfer (SV prev_sv, SV next_sv)
816	{	1173	{
817	dTHX;	1174	dTHX;
818	struct transfer_args ta;	1175	struct transfer_args ta;
819		1176
820	prepare_transfer (&ta, prev, next, flags);	1177	prepare_transfer (aTHX_ &ta, prev_sv, next_sv);
821	TRANSFER (ta);	1178	TRANSFER (ta);
822	}	1179	}
823		1180
824	/ Coro ******************************************************************/	1181	/ Coro ******************************************************************/
825		1182
826	#define PRIO_MAX 3
827	#define PRIO_HIGH 1
828	#define PRIO_NORMAL 0
829	#define PRIO_LOW -1
830	#define PRIO_IDLE -3
831	#define PRIO_MIN -4
832
833	/* for Coro.pm */
834	static GV coro_current, coro_idle;
835	static AV *coro_ready [PRIO_MAX-PRIO_MIN+1];
836	static int coro_nready;
837
838	static void	1183	static void
839	coro_enq (SV *sv)	1184	coro_enq (pTHX_ SV *coro_sv)
840	{	1185	{
841	int prio;
842
843	if (SvTYPE (sv) != SVt_PVHV)
844	croak ("Coro::ready tried to enqueue something that is not a coroutine");
845
846	prio = SvSTATE (sv)->prio;
847
848	av_push (coro_ready [prio - PRIO_MIN], sv);	1186	av_push (coro_ready [SvSTATE (coro_sv)->prio - PRIO_MIN], coro_sv);
849	coro_nready++;
850	}	1187	}
851		1188
852	static SV *	1189	static SV *
853	coro_deq (int min_prio)	1190	coro_deq (pTHX_ int min_prio)
854	{	1191	{
855	int prio = PRIO_MAX - PRIO_MIN;	1192	int prio = PRIO_MAX - PRIO_MIN;
856		1193
857	min_prio -= PRIO_MIN;	1194	min_prio -= PRIO_MIN;
858	if (min_prio < 0)	1195	if (min_prio < 0)
859	min_prio = 0;	1196	min_prio = 0;
860		1197
861	for (prio = PRIO_MAX - PRIO_MIN + 1; --prio >= min_prio; )	1198	for (prio = PRIO_MAX - PRIO_MIN + 1; --prio >= min_prio; )
862	if (AvFILLp (coro_ready [prio]) >= 0)	1199	if (AvFILLp (coro_ready [prio]) >= 0)
863	{
864	coro_nready--;
865	return av_shift (coro_ready [prio]);	1200	return av_shift (coro_ready [prio]);
866	}
867		1201
868	return 0;	1202	return 0;
869	}	1203	}
870		1204
871	static void	1205	static int
872	api_ready (SV *coro)	1206	api_ready (SV *coro_sv)
873	{	1207	{
874	dTHX;	1208	dTHX;
		1209	struct coro *coro;
875		1210
876	if (SvROK (coro))	1211	if (SvROK (coro_sv))
877	coro = SvRV (coro);	1212	coro_sv = SvRV (coro_sv);
		1213
		1214	coro = SvSTATE (coro_sv);
		1215
		1216	if (coro->flags & CF_READY)
		1217	return 0;
		1218
		1219	coro->flags \|= CF_READY;
878		1220
879	LOCK;	1221	LOCK;
880	coro_enq (SvREFCNT_inc (coro));	1222	coro_enq (aTHX_ SvREFCNT_inc (coro_sv));
		1223	++coro_nready;
881	UNLOCK;	1224	UNLOCK;
882	}
883		1225
		1226	return 1;
		1227	}
		1228
884	static void	1229	static int
		1230	api_is_ready (SV *coro_sv)
		1231	{
		1232	dTHX;
		1233	return !!(SvSTATE (coro_sv)->flags & CF_READY);
		1234	}
		1235
		1236	static void
885	prepare_schedule (struct transfer_args *ta)	1237	prepare_schedule (pTHX_ struct transfer_args *ta)
886	{	1238	{
887	SV current, prev, *next;	1239	SV prev_sv, next_sv;
888
889	current = GvSV (coro_current);
890		1240
891	for (;;)	1241	for (;;)
892	{	1242	{
893	LOCK;	1243	LOCK;
894	next = coro_deq (PRIO_MIN);	1244	next_sv = coro_deq (aTHX_ PRIO_MIN);
		1245
		1246	/* nothing to schedule: call the idle handler */
		1247	if (!next_sv)
		1248	{
		1249	dSP;
		1250	UNLOCK;
		1251
		1252	ENTER;
		1253	SAVETMPS;
		1254
		1255	PUSHMARK (SP);
		1256	PUTBACK;
		1257	call_sv (get_sv ("Coro::idle", FALSE), G_DISCARD);
		1258
		1259	FREETMPS;
		1260	LEAVE;
		1261	continue;
		1262	}
		1263
		1264	ta->next = SvSTATE (next_sv);
		1265
		1266	/* cannot transfer to destroyed coros, skip and look for next */
		1267	if (ta->next->flags & CF_DESTROYED)
		1268	{
		1269	UNLOCK;
		1270	SvREFCNT_dec (next_sv);
		1271	/* coro_nready is already taken care of by destroy */
		1272	continue;
		1273	}
		1274
		1275	--coro_nready;
895	UNLOCK;	1276	UNLOCK;
896
897	if (next)
898	break;	1277	break;
899
900	{
901	dSP;
902
903	ENTER;
904	SAVETMPS;
905
906	PUSHMARK (SP);
907	PUTBACK;
908	call_sv (GvSV (coro_idle), G_DISCARD);
909
910	FREETMPS;
911	LEAVE;
912	}	1278	}
913	}
914
915	prev = SvRV (current);
916	SvRV (current) = next;
917		1279
918	/* free this only after the transfer */	1280	/* free this only after the transfer */
		1281	prev_sv = SvRV (coro_current);
		1282	ta->prev = SvSTATE (prev_sv);
		1283	TRANSFER_CHECK (*ta);
		1284	assert (ta->next->flags & CF_READY);
		1285	ta->next->flags &= ~CF_READY;
		1286	SvRV_set (coro_current, next_sv);
		1287
919	LOCK;	1288	LOCK;
920	free_coro_mortal ();	1289	free_coro_mortal (aTHX);
		1290	coro_mortal = prev_sv;
921	UNLOCK;	1291	UNLOCK;
922	coro_mortal = prev;
923
924	ta->prev = SvSTATE (prev);
925	ta->next = SvSTATE (next);
926	ta->flags = TRANSFER_SAVE_ALL;
927	}	1292	}
928		1293
929	static void	1294	static void
930	prepare_cede (struct transfer_args *ta)	1295	prepare_cede (pTHX_ struct transfer_args *ta)
931	{	1296	{
932	LOCK;	1297	api_ready (coro_current);
933	coro_enq (SvREFCNT_inc (SvRV (GvSV (coro_current))));
934	UNLOCK;
935
936	prepare_schedule (ta);	1298	prepare_schedule (aTHX_ ta);
		1299	}
		1300
		1301	static int
		1302	prepare_cede_notself (pTHX_ struct transfer_args *ta)
		1303	{
		1304	if (coro_nready)
		1305	{
		1306	SV *prev = SvRV (coro_current);
		1307	prepare_schedule (aTHX_ ta);
		1308	api_ready (prev);
		1309	return 1;
		1310	}
		1311	else
		1312	return 0;
937	}	1313	}
938		1314
939	static void	1315	static void
940	api_schedule (void)	1316	api_schedule (void)
941	{	1317	{
942	dTHX;	1318	dTHX;
943	struct transfer_args ta;	1319	struct transfer_args ta;
944		1320
945	prepare_schedule (&ta);	1321	prepare_schedule (aTHX_ &ta);
946	TRANSFER (ta);	1322	TRANSFER (ta);
947	}	1323	}
948		1324
949	static void	1325	static int
950	api_cede (void)	1326	api_cede (void)
951	{	1327	{
952	dTHX;	1328	dTHX;
953	struct transfer_args ta;	1329	struct transfer_args ta;
954		1330
955	prepare_cede (&ta);	1331	prepare_cede (aTHX_ &ta);
		1332
		1333	if (ta.prev != ta.next)
		1334	{
956	TRANSFER (ta);	1335	TRANSFER (ta);
		1336	return 1;
		1337	}
		1338	else
		1339	return 0;
957	}	1340	}
958		1341
		1342	static int
		1343	api_cede_notself (void)
		1344	{
		1345	dTHX;
		1346	struct transfer_args ta;
		1347
		1348	if (prepare_cede_notself (aTHX_ &ta))
		1349	{
		1350	TRANSFER (ta);
		1351	return 1;
		1352	}
		1353	else
		1354	return 0;
		1355	}
		1356
		1357	static void
		1358	api_trace (SV *coro_sv, int flags)
		1359	{
		1360	dTHX;
		1361	struct coro *coro = SvSTATE (coro_sv);
		1362
		1363	if (flags & CC_TRACE)
		1364	{
		1365	if (!coro->cctx)
		1366	coro->cctx = cctx_new ();
		1367	else if (!(coro->cctx->flags & CC_TRACE))
		1368	croak ("cannot enable tracing on coroutine with custom stack");
		1369
		1370	coro->cctx->flags \|= CC_NOREUSE \| (flags & (CC_TRACE \| CC_TRACE_ALL));
		1371	}
		1372	else if (coro->cctx && coro->cctx->flags & CC_TRACE)
		1373	{
		1374	coro->cctx->flags &= ~(CC_TRACE \| CC_TRACE_ALL);
		1375
		1376	if (coro->flags & CF_RUNNING)
		1377	PL_runops = RUNOPS_DEFAULT;
		1378	else
		1379	coro->runops = RUNOPS_DEFAULT;
		1380	}
		1381	}
		1382
959	MODULE = Coro::State PACKAGE = Coro::State	1383	MODULE = Coro::State PACKAGE = Coro::State PREFIX = api_
960		1384
961	PROTOTYPES: DISABLE	1385	PROTOTYPES: DISABLE
962		1386
963	BOOT:	1387	BOOT:
964	{	1388	{
965	#ifdef USE_ITHREADS	1389	#ifdef USE_ITHREADS
966	MUTEX_INIT (&coro_mutex);	1390	MUTEX_INIT (&coro_mutex);
967	#endif	1391	#endif
968	BOOT_PAGESIZE;	1392	BOOT_PAGESIZE;
969		1393
		1394	irsgv = gv_fetchpv ("/", 1, SVt_PV);
		1395
970	coro_state_stash = gv_stashpv ("Coro::State", TRUE);	1396	coro_state_stash = gv_stashpv ("Coro::State", TRUE);
971		1397
972	newCONSTSUB (coro_state_stash, "SAVE_DEFAV", newSViv (TRANSFER_SAVE_DEFAV));	1398	newCONSTSUB (coro_state_stash, "CC_TRACE" , newSViv (CC_TRACE));
973	newCONSTSUB (coro_state_stash, "SAVE_DEFSV", newSViv (TRANSFER_SAVE_DEFSV));	1399	newCONSTSUB (coro_state_stash, "CC_TRACE_SUB" , newSViv (CC_TRACE_SUB));
974	newCONSTSUB (coro_state_stash, "SAVE_ERRSV", newSViv (TRANSFER_SAVE_ERRSV));	1400	newCONSTSUB (coro_state_stash, "CC_TRACE_LINE", newSViv (CC_TRACE_LINE));
		1401	newCONSTSUB (coro_state_stash, "CC_TRACE_ALL" , newSViv (CC_TRACE_ALL));
975		1402
976	main_mainstack = PL_mainstack;	1403	main_mainstack = PL_mainstack;
		1404	main_top_env = PL_top_env;
		1405
		1406	while (main_top_env->je_prev)
		1407	main_top_env = main_top_env->je_prev;
977		1408
978	coroapi.ver = CORO_API_VERSION;	1409	coroapi.ver = CORO_API_VERSION;
979	coroapi.transfer = api_transfer;	1410	coroapi.transfer = api_transfer;
980		1411
981	assert (("PRIO_NORMAL must be 0", !PRIO_NORMAL));	1412	assert (("PRIO_NORMAL must be 0", !PRIO_NORMAL));
…		…
988	struct coro *coro;	1419	struct coro *coro;
989	HV *hv;	1420	HV *hv;
990	int i;	1421	int i;
991		1422
992	Newz (0, coro, 1, struct coro);	1423	Newz (0, coro, 1, struct coro);
993	coro->args = newAV ();	1424	coro->args = newAV ();
		1425	coro->flags = CF_NEW;
994		1426
		1427	if (coro_first) coro_first->prev = coro;
		1428	coro->next = coro_first;
		1429	coro_first = coro;
		1430
995	hv = newHV ();	1431	coro->hv = hv = newHV ();
996	sv_magicext ((SV )hv, 0, PERL_MAGIC_ext, &coro_state_vtbl, (char )coro, 0)->mg_flags \|= MGf_DUP;	1432	sv_magicext ((SV )hv, 0, PERL_MAGIC_ext, &coro_state_vtbl, (char )coro, 0)->mg_flags \|= MGf_DUP;
997	RETVAL = sv_bless (newRV_noinc ((SV *)hv), gv_stashpv (klass, 1));	1433	RETVAL = sv_bless (newRV_noinc ((SV *)hv), gv_stashpv (klass, 1));
998		1434
999	for (i = 1; i < items; i++)	1435	for (i = 1; i < items; i++)
1000	av_push (coro->args, newSVsv (ST (i)));	1436	av_push (coro->args, newSVsv (ST (i)));
1001	}	1437	}
1002	OUTPUT:	1438	OUTPUT:
1003	RETVAL	1439	RETVAL
1004		1440
		1441	# these not obviously related functions are all rolled into the same xs
		1442	# function to increase chances that they all will call transfer with the same
		1443	# stack offset
1005	void	1444	void
1006	_set_stacklevel (...)	1445	_set_stacklevel (...)
1007	ALIAS:	1446	ALIAS:
1008	Coro::State::transfer = 1	1447	Coro::State::transfer = 1
1009	Coro::schedule = 2	1448	Coro::schedule = 2
1010	Coro::cede = 3	1449	Coro::cede = 3
1011	Coro::Cont::yield = 4	1450	Coro::cede_notself = 4
1012	CODE:	1451	CODE:
1013	{	1452	{
1014	struct transfer_args ta;	1453	struct transfer_args ta;
1015		1454
1016	switch (ix)	1455	switch (ix)
1017	{	1456	{
1018	case 0:	1457	case 0:
1019	ta.prev = (struct coro )INT2PTR (coro_cctx , SvIV (ST (0)));	1458	ta.prev = (struct coro )INT2PTR (coro_cctx , SvIV (ST (0)));
1020	ta.next = 0;	1459	ta.next = 0;
1021	ta.flags = TRANSFER_SET_STACKLEVEL;
1022	break;	1460	break;
1023		1461
1024	case 1:	1462	case 1:
1025	if (items != 3)	1463	if (items != 2)
1026	croak ("Coro::State::transfer(prev,next,flags) expects three arguments, not %d", items);	1464	croak ("Coro::State::transfer (prev,next) expects two arguments, not %d", items);
1027		1465
1028	prepare_transfer (&ta, ST (0), ST (1), SvIV (ST (2)));	1466	prepare_transfer (aTHX_ &ta, ST (0), ST (1));
1029	break;	1467	break;
1030		1468
1031	case 2:	1469	case 2:
1032	prepare_schedule (&ta);	1470	prepare_schedule (aTHX_ &ta);
1033	break;	1471	break;
1034		1472
1035	case 3:	1473	case 3:
1036	prepare_cede (&ta);	1474	prepare_cede (aTHX_ &ta);
1037	break;	1475	break;
1038		1476
1039	case 4:	1477	case 4:
1040	{	1478	if (!prepare_cede_notself (aTHX_ &ta))
1041	SV *yieldstack;	1479	XSRETURN_EMPTY;
1042	SV *sv;
1043	AV *defav = GvAV (PL_defgv);
1044		1480
1045	yieldstack = *hv_fetch (
1046	(HV *)SvRV (GvSV (coro_current)),
1047	"yieldstack", sizeof ("yieldstack") - 1,
1048	0
1049	);
1050
1051	/* set up @_ -- ugly */
1052	av_clear (defav);
1053	av_fill (defav, items - 1);
1054	while (items--)
1055	av_store (defav, items, SvREFCNT_inc (ST(items)));
1056
1057	sv = av_pop ((AV *)SvRV (yieldstack));
1058	ta.prev = SvSTATE (av_fetch ((AV )SvRV (sv), 0, 0));
1059	ta.next = SvSTATE (av_fetch ((AV )SvRV (sv), 1, 0));
1060	ta.flags = 0;
1061	SvREFCNT_dec (sv);
1062	}
1063	break;	1481	break;
1064
1065	}	1482	}
1066		1483
		1484	BARRIER;
1067	TRANSFER (ta);	1485	TRANSFER (ta);
1068	}
1069		1486
1070	void	1487	if (GIMME_V != G_VOID && ta.next != ta.prev)
1071	_clone_state_from (SV dst, SV src)	1488	XSRETURN_YES;
		1489	}
		1490
		1491	bool
		1492	_destroy (SV *coro_sv)
1072	CODE:	1493	CODE:
1073	{	1494	RETVAL = coro_state_destroy (aTHX_ SvSTATE (coro_sv));
1074	struct coro *coro_src = SvSTATE (src);	1495	OUTPUT:
1075		1496	RETVAL
1076	sv_unmagic (SvRV (dst), PERL_MAGIC_ext);
1077
1078	++coro_src->refcnt;
1079	sv_magicext (SvRV (dst), 0, PERL_MAGIC_ext, &coro_state_vtbl, (char *)coro_src, 0)->mg_flags \|= MGf_DUP;
1080	}
1081		1497
1082	void	1498	void
1083	_exit (code)	1499	_exit (code)
1084	int code	1500	int code
1085	PROTOTYPE: $	1501	PROTOTYPE: $
1086	CODE:	1502	CODE:
1087	_exit (code);	1503	_exit (code);
1088		1504
1089	int	1505	int
		1506	cctx_stacksize (int new_stacksize = 0)
		1507	CODE:
		1508	RETVAL = coro_stacksize;
		1509	if (new_stacksize)
		1510	coro_stacksize = new_stacksize;
		1511	OUTPUT:
		1512	RETVAL
		1513
		1514	int
1090	cctx_count ()	1515	cctx_count ()
1091	CODE:	1516	CODE:
1092	RETVAL = cctx_count;	1517	RETVAL = cctx_count;
1093	OUTPUT:	1518	OUTPUT:
1094	RETVAL	1519	RETVAL
…		…
1098	CODE:	1523	CODE:
1099	RETVAL = cctx_idle;	1524	RETVAL = cctx_idle;
1100	OUTPUT:	1525	OUTPUT:
1101	RETVAL	1526	RETVAL
1102		1527
		1528	void
		1529	list ()
		1530	PPCODE:
		1531	{
		1532	struct coro *coro;
		1533	for (coro = coro_first; coro; coro = coro->next)
		1534	if (coro->hv)
		1535	XPUSHs (sv_2mortal (newRV_inc ((SV *)coro->hv)));
		1536	}
		1537
		1538	void
		1539	call (Coro::State coro, SV *coderef)
		1540	ALIAS:
		1541	eval = 1
		1542	CODE:
		1543	{
		1544	if (coro->mainstack)
		1545	{
		1546	struct coro temp;
		1547	Zero (&temp, 1, struct coro);
		1548
		1549	if (!(coro->flags & CF_RUNNING))
		1550	{
		1551	save_perl (aTHX_ &temp);
		1552	load_perl (aTHX_ coro);
		1553	}
		1554
		1555	{
		1556	dSP;
		1557	ENTER;
		1558	SAVETMPS;
		1559	PUSHMARK (SP);
		1560	PUTBACK;
		1561	if (ix)
		1562	eval_sv (coderef, 0);
		1563	else
		1564	call_sv (coderef, G_KEEPERR \| G_EVAL \| G_VOID \| G_DISCARD);
		1565	SPAGAIN;
		1566	FREETMPS;
		1567	LEAVE;
		1568	PUTBACK;
		1569	}
		1570
		1571	if (!(coro->flags & CF_RUNNING))
		1572	{
		1573	save_perl (aTHX_ coro);
		1574	load_perl (aTHX_ &temp);
		1575	}
		1576	}
		1577	}
		1578
		1579	SV *
		1580	is_ready (Coro::State coro)
		1581	PROTOTYPE: $
		1582	ALIAS:
		1583	is_ready = CF_READY
		1584	is_running = CF_RUNNING
		1585	is_new = CF_NEW
		1586	is_destroyed = CF_DESTROYED
		1587	CODE:
		1588	RETVAL = boolSV (coro->flags & ix);
		1589	OUTPUT:
		1590	RETVAL
		1591
		1592	void
		1593	api_trace (SV *coro, int flags = CC_TRACE \| CC_TRACE_SUB)
		1594
		1595	SV *
		1596	has_stack (Coro::State coro)
		1597	PROTOTYPE: $
		1598	CODE:
		1599	RETVAL = boolSV (!!coro->cctx);
		1600	OUTPUT:
		1601	RETVAL
		1602
		1603	int
		1604	is_traced (Coro::State coro)
		1605	PROTOTYPE: $
		1606	CODE:
		1607	RETVAL = (coro->cctx ? coro->cctx->flags : 0) & CC_TRACE_ALL;
		1608	OUTPUT:
		1609	RETVAL
		1610
		1611	IV
		1612	rss (Coro::State coro)
		1613	PROTOTYPE: $
		1614	ALIAS:
		1615	usecount = 1
		1616	CODE:
		1617	switch (ix)
		1618	{
		1619	case 0: RETVAL = coro_rss (aTHX_ coro); break;
		1620	case 1: RETVAL = coro->usecount; break;
		1621	}
		1622	OUTPUT:
		1623	RETVAL
		1624
		1625
1103	MODULE = Coro::State PACKAGE = Coro	1626	MODULE = Coro::State PACKAGE = Coro
1104		1627
1105	BOOT:	1628	BOOT:
1106	{	1629	{
1107	int i;	1630	int i;
		1631
		1632	sv_pool_rss = get_sv ("Coro::POOL_RSS" , TRUE);
		1633	sv_pool_size = get_sv ("Coro::POOL_SIZE" , TRUE);
		1634	av_async_pool = get_av ("Coro::async_pool", TRUE);
		1635
		1636	coro_current = get_sv ("Coro::current", FALSE);
		1637	SvREADONLY_on (coro_current);
1108		1638
1109	coro_stash = gv_stashpv ("Coro", TRUE);	1639	coro_stash = gv_stashpv ("Coro", TRUE);
1110		1640
1111	newCONSTSUB (coro_stash, "PRIO_MAX", newSViv (PRIO_MAX));	1641	newCONSTSUB (coro_stash, "PRIO_MAX", newSViv (PRIO_MAX));
1112	newCONSTSUB (coro_stash, "PRIO_HIGH", newSViv (PRIO_HIGH));	1642	newCONSTSUB (coro_stash, "PRIO_HIGH", newSViv (PRIO_HIGH));
1113	newCONSTSUB (coro_stash, "PRIO_NORMAL", newSViv (PRIO_NORMAL));	1643	newCONSTSUB (coro_stash, "PRIO_NORMAL", newSViv (PRIO_NORMAL));
1114	newCONSTSUB (coro_stash, "PRIO_LOW", newSViv (PRIO_LOW));	1644	newCONSTSUB (coro_stash, "PRIO_LOW", newSViv (PRIO_LOW));
1115	newCONSTSUB (coro_stash, "PRIO_IDLE", newSViv (PRIO_IDLE));	1645	newCONSTSUB (coro_stash, "PRIO_IDLE", newSViv (PRIO_IDLE));
1116	newCONSTSUB (coro_stash, "PRIO_MIN", newSViv (PRIO_MIN));	1646	newCONSTSUB (coro_stash, "PRIO_MIN", newSViv (PRIO_MIN));
1117		1647
1118	coro_current = gv_fetchpv ("Coro::current", TRUE, SVt_PV);
1119	coro_idle = gv_fetchpv ("Coro::idle" , TRUE, SVt_PV);
1120
1121	for (i = PRIO_MAX - PRIO_MIN + 1; i--; )	1648	for (i = PRIO_MAX - PRIO_MIN + 1; i--; )
1122	coro_ready[i] = newAV ();	1649	coro_ready[i] = newAV ();
1123		1650
1124	{	1651	{
1125	SV *sv = perl_get_sv("Coro::API", 1);	1652	SV *sv = perl_get_sv("Coro::API", 1);
1126		1653
1127	coroapi.schedule = api_schedule;	1654	coroapi.schedule = api_schedule;
1128	coroapi.cede = api_cede;	1655	coroapi.cede = api_cede;
		1656	coroapi.cede_notself = api_cede_notself;
1129	coroapi.ready = api_ready;	1657	coroapi.ready = api_ready;
		1658	coroapi.is_ready = api_is_ready;
1130	coroapi.nready = &coro_nready;	1659	coroapi.nready = &coro_nready;
1131	coroapi.current = coro_current;	1660	coroapi.current = coro_current;
1132		1661
1133	GCoroAPI = &coroapi;	1662	GCoroAPI = &coroapi;
1134	sv_setiv (sv, (IV)&coroapi);	1663	sv_setiv (sv, (IV)&coroapi);
1135	SvREADONLY_on (sv);	1664	SvREADONLY_on (sv);
1136	}	1665	}
1137	}	1666	}
		1667
		1668	void
		1669	_set_current (SV *current)
		1670	PROTOTYPE: $
		1671	CODE:
		1672	SvREFCNT_dec (SvRV (coro_current));
		1673	SvRV_set (coro_current, SvREFCNT_inc (SvRV (current)));
1138		1674
1139	int	1675	int
1140	prio (Coro::State coro, int newprio = 0)	1676	prio (Coro::State coro, int newprio = 0)
1141	ALIAS:	1677	ALIAS:
1142	nice = 1	1678	nice = 1
…		…
1145	RETVAL = coro->prio;	1681	RETVAL = coro->prio;
1146		1682
1147	if (items > 1)	1683	if (items > 1)
1148	{	1684	{
1149	if (ix)	1685	if (ix)
1150	newprio += coro->prio;	1686	newprio = coro->prio - newprio;
1151		1687
1152	if (newprio < PRIO_MIN) newprio = PRIO_MIN;	1688	if (newprio < PRIO_MIN) newprio = PRIO_MIN;
1153	if (newprio > PRIO_MAX) newprio = PRIO_MAX;	1689	if (newprio > PRIO_MAX) newprio = PRIO_MAX;
1154		1690
1155	coro->prio = newprio;	1691	coro->prio = newprio;
1156	}	1692	}
1157	}	1693	}
		1694	OUTPUT:
		1695	RETVAL
1158		1696
1159	void	1697	SV *
1160	ready (SV *self)	1698	ready (SV *self)
1161	PROTOTYPE: $	1699	PROTOTYPE: $
1162	CODE:	1700	CODE:
1163	api_ready (self);	1701	RETVAL = boolSV (api_ready (self));
		1702	OUTPUT:
		1703	RETVAL
1164		1704
1165	int	1705	int
1166	nready (...)	1706	nready (...)
1167	PROTOTYPE:	1707	PROTOTYPE:
1168	CODE:	1708	CODE:
1169	RETVAL = coro_nready;	1709	RETVAL = coro_nready;
1170	OUTPUT:	1710	OUTPUT:
1171	RETVAL	1711	RETVAL
1172		1712
		1713	# for async_pool speedup
		1714	void
		1715	_pool_1 (SV *cb)
		1716	CODE:
		1717	{
		1718	struct coro *coro = SvSTATE (coro_current);
		1719	HV hv = (HV )SvRV (coro_current);
		1720	AV *defav = GvAV (PL_defgv);
		1721	SV *invoke = hv_delete (hv, "_invoke", sizeof ("_invoke") - 1, 0);
		1722	AV *invoke_av;
		1723	int i, len;
		1724
		1725	coro->defoutgv = SvREFCNT_inc (PL_defoutgv);
		1726
		1727	if (!invoke)
		1728	croak ("\3terminate\2\n");
		1729
		1730	hv_store (hv, "desc", sizeof ("desc") - 1,
		1731	newSVpvn ("[async_pool]", sizeof ("[async_pool]") - 1), 0);
		1732
		1733	invoke_av = (AV *)SvRV (invoke);
		1734	len = av_len (invoke_av);
		1735
		1736	sv_setsv (cb, AvARRAY (invoke_av)[0]);
		1737
		1738	if (len > 0)
		1739	{
		1740	av_fill (defav, len - 1);
		1741	for (i = 0; i < len; ++i)
		1742	av_store (defav, i, SvREFCNT_inc (AvARRAY (invoke_av)[i + 1]));
		1743	}
		1744
		1745
		1746
		1747	SvREFCNT_dec (invoke);
		1748	}
		1749
		1750	void
		1751	_pool_2 (SV *cb)
		1752	CODE:
		1753	{
		1754	struct coro *coro = SvSTATE (coro_current);
		1755
		1756	sv_setsv (cb, &PL_sv_undef);
		1757
		1758	SvREFCNT_dec (PL_defoutgv); PL_defoutgv = coro->defoutgv;
		1759
		1760	if (coro_rss (aTHX_ coro) > SvIV (sv_pool_rss)
		1761	\|\| av_len (av_async_pool) + 1 >= SvIV (sv_pool_size))
		1762	croak ("\3terminate\2\n");
		1763
		1764	av_clear (GvAV (PL_defgv));
		1765	hv_store ((HV *)SvRV (coro_current), "desc", sizeof ("desc") - 1,
		1766	newSVpvn ("[async_pool idle]", sizeof ("[async_pool idle]") - 1), 0);
		1767
		1768	coro->prio = 0;
		1769
		1770	if (coro->cctx && (coro->cctx->flags & CC_TRACE))
		1771	api_trace (coro_current, 0);
		1772
		1773	av_push (av_async_pool, newSVsv (coro_current));
		1774	}
		1775
		1776
1173	MODULE = Coro::State PACKAGE = Coro::AIO	1777	MODULE = Coro::State PACKAGE = Coro::AIO
1174		1778
1175	SV *	1779	SV *
1176	_get_state ()	1780	_get_state ()
1177	CODE:	1781	CODE:
1178	{	1782	{
1179	struct {	1783	struct io_state *data;
1180	int errorno;
1181	int laststype;
1182	int laststatval;
1183	Stat_t statcache;
1184	} data;
1185		1784
		1785	RETVAL = newSV (sizeof (struct io_state));
		1786	data = (struct io_state *)SvPVX (RETVAL);
		1787	SvCUR_set (RETVAL, sizeof (struct io_state));
		1788	SvPOK_only (RETVAL);
		1789
1186	data.errorno = errno;	1790	data->errorno = errno;
1187	data.laststype = PL_laststype;	1791	data->laststype = PL_laststype;
1188	data.laststatval = PL_laststatval;	1792	data->laststatval = PL_laststatval;
1189	data.statcache = PL_statcache;	1793	data->statcache = PL_statcache;
1190
1191	RETVAL = newSVpvn ((char *)&data, sizeof data);
1192	}	1794	}
1193	OUTPUT:	1795	OUTPUT:
1194	RETVAL	1796	RETVAL
1195		1797
1196	void	1798	void
1197	_set_state (char *data_)	1799	_set_state (char *data_)
1198	PROTOTYPE: $	1800	PROTOTYPE: $
1199	CODE:	1801	CODE:
1200	{	1802	{
1201	struct {	1803	struct io_state data = (void )data_;
1202	int errorno;
1203	int laststype;
1204	int laststatval;
1205	Stat_t statcache;
1206	} data = (void )data_;
1207		1804
1208	errno = data->errorno;	1805	errno = data->errorno;
1209	PL_laststype = data->laststype;	1806	PL_laststype = data->laststype;
1210	PL_laststatval = data->laststatval;	1807	PL_laststatval = data->laststatval;
1211	PL_statcache = data->statcache;	1808	PL_statcache = data->statcache;
1212	}	1809	}
		1810

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Comparing Coro/Coro/State.xs (file contents): Revision 1.109 by root, Mon Nov 27 18:45:29 2006 UTC vs. Revision 1.181 by root, Wed Oct 3 17:37:33 2007 UTC

Diff Legend

Comparing Coro/Coro/State.xs (file contents):
Revision 1.109 by root, Mon Nov 27 18:45:29 2006 UTC vs.
Revision 1.181 by root, Wed Oct 3 17:37:33 2007 UTC