[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 1.179 by root, Wed Oct 3 16:03:17 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	IO 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 switches to this coro */
		207
147	/* coro process data */	208	/* coro process data */
148	int prio;	209	int prio;
		210
		211	/* linked list */
		212	struct coro next, prev;
		213	HV hv; / the perl hash associated with this coro, if any */
149	};	214	};
150		215
151	typedef struct coro *Coro__State;	216	typedef struct coro *Coro__State;
152	typedef struct coro *Coro__State_or_hashref;	217	typedef struct coro *Coro__State_or_hashref;
153		218
		219	/ Coro ******************************************************************/
		220
		221	#define PRIO_MAX 3
		222	#define PRIO_HIGH 1
		223	#define PRIO_NORMAL 0
		224	#define PRIO_LOW -1
		225	#define PRIO_IDLE -3
		226	#define PRIO_MIN -4
		227
		228	/* for Coro.pm */
		229	static SV *coro_current;
		230	static AV *coro_ready [PRIO_MAX-PRIO_MIN+1];
		231	static int coro_nready;
		232	static struct coro *coro_first;
		233
		234	/ lowlevel stuff ********************************************************/
		235
154	static AV *	236	static AV *
155	coro_clone_padlist (CV *cv)	237	coro_clone_padlist (pTHX_ CV *cv)
156	{	238	{
157	AV *padlist = CvPADLIST (cv);	239	AV *padlist = CvPADLIST (cv);
158	AV newpadlist, newpad;	240	AV newpadlist, newpad;
159		241
160	newpadlist = newAV ();	242	newpadlist = newAV ();
…		…
172		254
173	return newpadlist;	255	return newpadlist;
174	}	256	}
175		257
176	static void	258	static void
177	free_padlist (AV *padlist)	259	free_padlist (pTHX_ AV *padlist)
178	{	260	{
179	/* may be during global destruction */	261	/* may be during global destruction */
180	if (SvREFCNT (padlist))	262	if (SvREFCNT (padlist))
181	{	263	{
182	I32 i = AvFILLp (padlist);	264	I32 i = AvFILLp (padlist);
…		…
203	AV *padlist;	285	AV *padlist;
204	AV av = (AV )mg->mg_obj;	286	AV av = (AV )mg->mg_obj;
205		287
206	/* casting is fun. */	288	/* casting is fun. */
207	while (&PL_sv_undef != (SV )(padlist = (AV )av_pop (av)))	289	while (&PL_sv_undef != (SV )(padlist = (AV )av_pop (av)))
208	free_padlist (padlist);	290	free_padlist (aTHX_ padlist);
209		291
210	SvREFCNT_dec (av);	292	SvREFCNT_dec (av);
211		293
212	return 0;	294	return 0;
213	}	295	}
…		…
221	? SvMAGIC (cv)->mg_type == PERL_MAGIC_coro \	303	? SvMAGIC (cv)->mg_type == PERL_MAGIC_coro \
222	? SvMAGIC (cv) \	304	? SvMAGIC (cv) \
223	: mg_find ((SV *)cv, PERL_MAGIC_coro) \	305	: mg_find ((SV *)cv, PERL_MAGIC_coro) \
224	: 0	306	: 0
225		307
		308	static struct coro *
		309	SvSTATE_ (pTHX_ SV *coro)
		310	{
		311	HV *stash;
		312	MAGIC *mg;
		313
		314	if (SvROK (coro))
		315	coro = SvRV (coro);
		316
		317	if (SvTYPE (coro) != SVt_PVHV)
		318	croak ("Coro::State object required");
		319
		320	stash = SvSTASH (coro);
		321	if (stash != coro_stash && stash != coro_state_stash)
		322	{
		323	/* very slow, but rare, check */
		324	if (!sv_derived_from (sv_2mortal (newRV_inc (coro)), "Coro::State"))
		325	croak ("Coro::State object required");
		326	}
		327
		328	mg = CORO_MAGIC (coro);
		329	return (struct coro *)mg->mg_ptr;
		330	}
		331
		332	#define SvSTATE(sv) SvSTATE_ (aTHX_ (sv))
		333
226	/* the next two functions merely cache the padlists */	334	/* the next two functions merely cache the padlists */
227	static void	335	static void
228	get_padlist (CV *cv)	336	get_padlist (pTHX_ CV *cv)
229	{	337	{
230	MAGIC *mg = CORO_MAGIC (cv);	338	MAGIC *mg = CORO_MAGIC (cv);
231	AV *av;	339	AV *av;
232		340
233	if (mg && AvFILLp ((av = (AV *)mg->mg_obj)) >= 0)	341	if (mg && AvFILLp ((av = (AV *)mg->mg_obj)) >= 0)
234	CvPADLIST (cv) = (AV *)AvARRAY (av)[AvFILLp (av)--];	342	CvPADLIST (cv) = (AV *)AvARRAY (av)[AvFILLp (av)--];
235	else	343	else
236	{	344	{
237	#if 0	345	#if CORO_PREFER_PERL_FUNCTIONS
238	/* this is probably cleaner, but also slower? */	346	/* this is probably cleaner, but also slower? */
239	CV *cp = Perl_cv_clone (cv);	347	CV *cp = Perl_cv_clone (cv);
240	CvPADLIST (cv) = CvPADLIST (cp);	348	CvPADLIST (cv) = CvPADLIST (cp);
241	CvPADLIST (cp) = 0;	349	CvPADLIST (cp) = 0;
242	SvREFCNT_dec (cp);	350	SvREFCNT_dec (cp);
243	#else	351	#else
244	CvPADLIST (cv) = coro_clone_padlist (cv);	352	CvPADLIST (cv) = coro_clone_padlist (aTHX_ cv);
245	#endif	353	#endif
246	}	354	}
247	}	355	}
248		356
249	static void	357	static void
250	put_padlist (CV *cv)	358	put_padlist (pTHX_ CV *cv)
251	{	359	{
252	MAGIC *mg = CORO_MAGIC (cv);	360	MAGIC *mg = CORO_MAGIC (cv);
253	AV *av;	361	AV *av;
254		362
255	if (!mg)	363	if (!mg)
…		…
266	av_extend (av, AvMAX (av) + 1);	374	av_extend (av, AvMAX (av) + 1);
267		375
268	AvARRAY (av)[++AvFILLp (av)] = (SV *)CvPADLIST (cv);	376	AvARRAY (av)[++AvFILLp (av)] = (SV *)CvPADLIST (cv);
269	}	377	}
270		378
271	#define SB do {	379	/ load & save, init *****************************************************/
272	#define SE } while (0)
273		380
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	381	static void
280	load_state(Coro__State c)	382	load_perl (pTHX_ Coro__State c)
281	{	383	{
282	#define VAR(name,type) PL_ ## name = c->name;	384	#define VAR(name,type) PL_ ## name = c->name;
283	# include "state.h"	385	# include "state.h"
284	#undef VAR	386	#undef VAR
285		387
286	if (c->defav) REPLACE_SV (GvAV (PL_defgv), c->defav);	388	GvSV (PL_defgv) = c->defsv;
287	if (c->defsv) REPLACE_SV (DEFSV , c->defsv);	389	GvAV (PL_defgv) = c->defav;
288	if (c->errsv) REPLACE_SV (ERRSV , c->errsv);	390	GvSV (PL_errgv) = c->errsv;
		391	GvIOp(PL_defoutgv) = c->deffh;
		392	PL_rs = c->irssv;
		393	GvSV (irsgv) = c->irssv_sv;
289		394
290	{	395	{
291	dSP;	396	dSP;
292	CV *cv;	397	CV *cv;
293		398
294	/* now do the ugly restore mess */	399	/* now do the ugly restore mess */
295	while ((cv = (CV *)POPs))	400	while ((cv = (CV *)POPs))
296	{	401	{
297	put_padlist (cv); /* mark this padlist as available */	402	put_padlist (aTHX_ cv); /* mark this padlist as available */
298	CvDEPTH (cv) = PTR2IV (POPs);	403	CvDEPTH (cv) = PTR2IV (POPs);
299	CvPADLIST (cv) = (AV *)POPs;	404	CvPADLIST (cv) = (AV *)POPs;
300	}	405	}
301		406
302	PUTBACK;	407	PUTBACK;
303	}	408	}
304	}	409	}
305		410
306	static void	411	static void
307	save_state(Coro__State c, int flags)	412	save_perl (pTHX_ Coro__State c)
308	{	413	{
309	{	414	{
310	dSP;	415	dSP;
311	I32 cxix = cxstack_ix;	416	I32 cxix = cxstack_ix;
312	PERL_CONTEXT *ccstk = cxstack;	417	PERL_CONTEXT *ccstk = cxstack;
…		…
315	/*	420	/*
316	* the worst thing you can imagine happens first - we have to save	421	* the worst thing you can imagine happens first - we have to save
317	* (and reinitialize) all cv's in the whole callchain :(	422	* (and reinitialize) all cv's in the whole callchain :(
318	*/	423	*/
319		424
320	PUSHs (Nullsv);	425	XPUSHs (Nullsv);
321	/* this loop was inspired by pp_caller */	426	/* this loop was inspired by pp_caller */
322	for (;;)	427	for (;;)
323	{	428	{
324	while (cxix >= 0)	429	while (cxix >= 0)
325	{	430	{
326	PERL_CONTEXT *cx = &ccstk[cxix--];	431	PERL_CONTEXT *cx = &ccstk[cxix--];
327		432
328	if (CxTYPE(cx) == CXt_SUB)	433	if (CxTYPE (cx) == CXt_SUB \|\| CxTYPE (cx) == CXt_FORMAT)
329	{	434	{
330	CV *cv = cx->blk_sub.cv;	435	CV *cv = cx->blk_sub.cv;
331		436
332	if (CvDEPTH (cv))	437	if (CvDEPTH (cv))
333	{	438	{
334	EXTEND (SP, 3);	439	EXTEND (SP, 3);
335
336	PUSHs ((SV *)CvPADLIST(cv));	440	PUSHs ((SV *)CvPADLIST (cv));
337	PUSHs (INT2PTR (SV *, CvDEPTH (cv)));	441	PUSHs (INT2PTR (SV *, CvDEPTH (cv)));
338	PUSHs ((SV *)cv);	442	PUSHs ((SV *)cv);
339		443
340	CvDEPTH (cv) = 0;	444	CvDEPTH (cv) = 0;
341	get_padlist (cv);	445	get_padlist (aTHX_ cv);
342	}	446	}
343	}	447	}
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	}	448	}
353		449
354	if (top_si->si_type == PERLSI_MAIN)	450	if (top_si->si_type == PERLSI_MAIN)
355	break;	451	break;
356		452
357	top_si = top_si->si_prev;	453	top_si = top_si->si_prev;
358	ccstk = top_si->si_cxstack;	454	ccstk = top_si->si_cxstack;
359	cxix = top_si->si_cxix;	455	cxix = top_si->si_cxix;
360	}	456	}
361		457
362	PUTBACK;	458	PUTBACK;
363	}	459	}
364		460
365	c->defav = flags & TRANSFER_SAVE_DEFAV ? (AV *)SvREFCNT_inc (GvAV (PL_defgv)) : 0;	461	c->defav = GvAV (PL_defgv);
366	c->defsv = flags & TRANSFER_SAVE_DEFSV ? SvREFCNT_inc (DEFSV) : 0;	462	c->defsv = DEFSV;
367	c->errsv = flags & TRANSFER_SAVE_ERRSV ? SvREFCNT_inc (ERRSV) : 0;	463	c->errsv = ERRSV;
		464	c->deffh = GvIOp (PL_defoutgv);
		465	c->irssv = PL_rs;
		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), irsgv, PERL_MAGIC_sv, "/", 1);
		607	PL_rs = newSVsv (GvSV (irsgv));
		608
		609	{
		610	IO *io = newIO ();
		611	GvIOp(PL_defoutgv) = io;
		612	IoTYPE (io) = IoTYPE_WRONLY;
		613	IoOFP (io) = IoIFP (io) = PerlIO_stdout ();
		614	IoFLAGS (io) \|= IOf_FLUSH;
		615	}
482		616
483	{	617	{
484	dSP;	618	dSP;
485	LOGOP myop;	619	LOGOP myop;
486		620
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);	621	Zero (&myop, 1, LOGOP);
494	myop.op_next = Nullop;	622	myop.op_next = Nullop;
495	myop.op_flags = OPf_WANT_VOID;	623	myop.op_flags = OPf_WANT_VOID;
496		624
		625	PUSHMARK (SP);
		626	XPUSHs (av_shift (GvAV (PL_defgv)));
		627	PUTBACK;
497	PL_op = (OP *)&myop;	628	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);	629	PL_op = PL_ppaddr[OP_ENTERSUB](aTHX);
503	SPAGAIN;	630	SPAGAIN;
504
505	ENTER; /* necessary e.g. for dounwind */
506	}	631	}
507	}
508		632
		633	ENTER; /* necessary e.g. for dounwind */
		634	}
		635
509	static void	636	static void
		637	coro_destroy (pTHX_ struct coro *coro)
		638	{
		639	if (!IN_DESTRUCT)
		640	{
		641	/* restore all saved variables and stuff */
		642	LEAVE_SCOPE (0);
		643	assert (PL_tmps_floor == -1);
		644
		645	/* free all temporaries */
		646	FREETMPS;
		647	assert (PL_tmps_ix == -1);
		648
		649	/* unwind all extra stacks */
		650	POPSTACK_TO (PL_mainstack);
		651
		652	/* unwind main stack */
		653	dounwind (-1);
		654	}
		655
		656	SvREFCNT_dec (GvSV (PL_defgv));
		657	SvREFCNT_dec (GvAV (PL_defgv));
		658	SvREFCNT_dec (GvSV (PL_errgv));
		659	SvREFCNT_dec (GvIOp(PL_defoutgv));
		660	SvREFCNT_dec (PL_rs);
		661	SvREFCNT_dec (GvSV (irsgv));
		662
		663	coro_destroy_stacks (aTHX);
		664	}
		665
		666	static void
510	free_coro_mortal ()	667	free_coro_mortal (pTHX)
511	{	668	{
512	if (coro_mortal)	669	if (coro_mortal)
513	{	670	{
514	SvREFCNT_dec (coro_mortal);	671	SvREFCNT_dec (coro_mortal);
515	coro_mortal = 0;	672	coro_mortal = 0;
516	}	673	}
517	}	674	}
518		675
		676	static int
		677	runops_trace (pTHX)
		678	{
		679	COP *oldcop = 0;
		680	int oldcxix = -2;
		681	struct coro coro = SvSTATE (coro_current); / trace cctx is tied to specific coro */
		682	coro_cctx *cctx = coro->cctx;
		683
		684	while ((PL_op = CALL_FPTR (PL_op->op_ppaddr) (aTHX)))
		685	{
		686	PERL_ASYNC_CHECK ();
		687
		688	if (cctx->flags & CC_TRACE_ALL)
		689	{
		690	if (PL_op->op_type == OP_LEAVESUB && cctx->flags & CC_TRACE_SUB)
		691	{
		692	PERL_CONTEXT *cx = &cxstack[cxstack_ix];
		693	SV bot, top;
		694	AV av = newAV (); / return values */
		695	SV **cb;
		696	dSP;
		697
		698	GV *gv = CvGV (cx->blk_sub.cv);
		699	SV *fullname = sv_2mortal (newSV (0));
		700	if (isGV (gv))
		701	gv_efullname3 (fullname, gv, 0);
		702
		703	bot = PL_stack_base + cx->blk_oldsp + 1;
		704	top = cx->blk_gimme == G_ARRAY ? SP + 1
		705	: cx->blk_gimme == G_SCALAR ? bot + 1
		706	: bot;
		707
		708	while (bot < top)
		709	av_push (av, SvREFCNT_inc (*bot++));
		710
		711	PL_runops = RUNOPS_DEFAULT;
		712	ENTER;
		713	SAVETMPS;
		714	EXTEND (SP, 3);
		715	PUSHMARK (SP);
		716	PUSHs (&PL_sv_no);
		717	PUSHs (fullname);
		718	PUSHs (sv_2mortal (newRV_noinc ((SV *)av)));
		719	PUTBACK;
		720	cb = hv_fetch ((HV *)SvRV (coro_current), "_trace_sub_cb", sizeof ("_trace_sub_cb") - 1, 0);
		721	if (cb) call_sv (*cb, G_KEEPERR \| G_EVAL \| G_VOID \| G_DISCARD);
		722	SPAGAIN;
		723	FREETMPS;
		724	LEAVE;
		725	PL_runops = runops_trace;
		726	}
		727
		728	if (oldcop != PL_curcop)
		729	{
		730	oldcop = PL_curcop;
		731
		732	if (PL_curcop != &PL_compiling)
		733	{
		734	SV **cb;
		735
		736	if (oldcxix != cxstack_ix && cctx->flags & CC_TRACE_SUB)
		737	{
		738	PERL_CONTEXT *cx = &cxstack[cxstack_ix];
		739
		740	if (CxTYPE (cx) == CXt_SUB && oldcxix < cxstack_ix)
		741	{
		742	runops_proc_t old_runops = PL_runops;
		743	dSP;
		744	GV *gv = CvGV (cx->blk_sub.cv);
		745	SV *fullname = sv_2mortal (newSV (0));
		746
		747	if (isGV (gv))
		748	gv_efullname3 (fullname, gv, 0);
		749
		750	PL_runops = RUNOPS_DEFAULT;
		751	ENTER;
		752	SAVETMPS;
		753	EXTEND (SP, 3);
		754	PUSHMARK (SP);
		755	PUSHs (&PL_sv_yes);
		756	PUSHs (fullname);
		757	PUSHs (cx->blk_sub.hasargs ? sv_2mortal (newRV_inc ((SV *)cx->blk_sub.argarray)) : &PL_sv_undef);
		758	PUTBACK;
		759	cb = hv_fetch ((HV *)SvRV (coro_current), "_trace_sub_cb", sizeof ("_trace_sub_cb") - 1, 0);
		760	if (cb) call_sv (*cb, G_KEEPERR \| G_EVAL \| G_VOID \| G_DISCARD);
		761	SPAGAIN;
		762	FREETMPS;
		763	LEAVE;
		764	PL_runops = runops_trace;
		765	}
		766
		767	oldcxix = cxstack_ix;
		768	}
		769
		770	if (cctx->flags & CC_TRACE_LINE)
		771	{
		772	dSP;
		773
		774	PL_runops = RUNOPS_DEFAULT;
		775	ENTER;
		776	SAVETMPS;
		777	EXTEND (SP, 3);
		778	PL_runops = RUNOPS_DEFAULT;
		779	PUSHMARK (SP);
		780	PUSHs (sv_2mortal (newSVpv (OutCopFILE (oldcop), 0)));
		781	PUSHs (sv_2mortal (newSViv (CopLINE (oldcop))));
		782	PUTBACK;
		783	cb = hv_fetch ((HV *)SvRV (coro_current), "_trace_line_cb", sizeof ("_trace_line_cb") - 1, 0);
		784	if (cb) call_sv (*cb, G_KEEPERR \| G_EVAL \| G_VOID \| G_DISCARD);
		785	SPAGAIN;
		786	FREETMPS;
		787	LEAVE;
		788	PL_runops = runops_trace;
		789	}
		790	}
		791	}
		792	}
		793	}
		794
		795	TAINT_NOT;
		796	return 0;
		797	}
		798
		799	/* inject a fake call to Coro::State::_cctx_init into the execution */
		800	/* _cctx_init should be careful, as it could be called at almost any time */
		801	/* during execution of a perl program */
519	static void NOINLINE	802	static void NOINLINE
520	prepare_cctx (coro_cctx *cctx)	803	prepare_cctx (pTHX_ coro_cctx *cctx)
521	{	804	{
522	dSP;	805	dSP;
523	LOGOP myop;	806	LOGOP myop;
524		807
		808	PL_top_env = &PL_start_env;
		809
		810	if (cctx->flags & CC_TRACE)
		811	PL_runops = runops_trace;
		812
525	Zero (&myop, 1, LOGOP);	813	Zero (&myop, 1, LOGOP);
526	myop.op_next = PL_op;	814	myop.op_next = PL_op;
527	myop.op_flags = OPf_WANT_VOID;	815	myop.op_flags = OPf_WANT_VOID \| OPf_STACKED;
528
529	sv_setiv (get_sv ("Coro::State::_cctx", FALSE), PTR2IV (cctx));
530		816
531	PUSHMARK (SP);	817	PUSHMARK (SP);
		818	EXTEND (SP, 2);
		819	PUSHs (sv_2mortal (newSViv (PTR2IV (cctx))));
532	XPUSHs ((SV *)get_cv ("Coro::State::_cctx_init", FALSE));	820	PUSHs ((SV *)get_cv ("Coro::State::_cctx_init", FALSE));
533	PUTBACK;	821	PUTBACK;
		822	PL_op = (OP *)&myop;
534	PL_restartop = PL_ppaddr[OP_ENTERSUB](aTHX);	823	PL_op = PL_ppaddr[OP_ENTERSUB](aTHX);
535	SPAGAIN;	824	SPAGAIN;
536	}	825	}
537		826
		827	/*
		828	* this is a _very_ stripped down perl interpreter ;)
		829	*/
538	static void	830	static void
539	coro_run (void *arg)	831	coro_run (void *arg)
540	{	832	{
		833	dTHX;
		834
541	/* coro_run is the alternative epilogue of transfer() */	835	/* coro_run is the alternative tail of transfer(), so unlock here. */
542	UNLOCK;	836	UNLOCK;
543		837
		838	/* we now skip the entersub that lead to transfer() */
		839	PL_op = PL_op->op_next;
		840
		841	/* inject a fake subroutine call to cctx_init */
		842	prepare_cctx (aTHX_ (coro_cctx *)arg);
		843
		844	/* somebody or something will hit me for both perl_run and PL_restartop */
		845	PL_restartop = PL_op;
		846	perl_run (PL_curinterp);
		847
544	/*	848	/*
545	* this is a _very_ stripped down perl interpreter ;)	849	* If perl-run returns we assume exit() was being called or the coro
		850	* fell off the end, which seems to be the only valid (non-bug)
		851	* reason for perl_run to return. We try to exit by jumping to the
		852	* bootstrap-time "top" top_env, as we cannot restore the "main"
		853	* coroutine as Coro has no such concept
546	*/	854	*/
547	PL_top_env = &PL_start_env;	855	PL_top_env = main_top_env;
548		856	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	}	857	}
558		858
559	static coro_cctx *	859	static coro_cctx *
560	cctx_new ()	860	cctx_new ()
561	{	861	{
562	coro_cctx *cctx;	862	coro_cctx *cctx;
		863	void *stack_start;
		864	size_t stack_size;
563		865
564	++cctx_count;	866	++cctx_count;
565		867
566	New (0, cctx, 1, coro_cctx);	868	Newz (0, cctx, 1, coro_cctx);
567		869
568	#if HAVE_MMAP	870	#if HAVE_MMAP
569		871
570	cctx->ssize = ((STACKSIZE * sizeof (long) + PAGESIZE - 1) / PAGESIZE + STACKGUARD) * PAGESIZE;	872	cctx->ssize = ((coro_stacksize * sizeof (long) + PAGESIZE - 1) / PAGESIZE + CORO_STACKGUARD) * PAGESIZE;
571	/* mmap suppsedly does allocate-on-write for us */	873	/* 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);	874	cctx->sptr = mmap (0, cctx->ssize, PROT_EXEC\|PROT_READ\|PROT_WRITE, MAP_PRIVATE\|MAP_ANONYMOUS, 0, 0);
573		875
574	if (cctx->sptr == (void *)-1)	876	if (cctx->sptr != (void *)-1)
575	{
576	perror ("FATAL: unable to mmap stack for coroutine");
577	_exit (EXIT_FAILURE);
578	}	877	{
579
580	# if STACKGUARD	878	# if CORO_STACKGUARD
581	mprotect (cctx->sptr, STACKGUARD * PAGESIZE, PROT_NONE);	879	mprotect (cctx->sptr, CORO_STACKGUARD * PAGESIZE, PROT_NONE);
582	# endif	880	# endif
		881	stack_start = CORO_STACKGUARD * PAGESIZE + (char *)cctx->sptr;
		882	stack_size = cctx->ssize - CORO_STACKGUARD * PAGESIZE;
		883	cctx->flags \|= CC_MAPPED;
		884	}
		885	else
		886	#endif
		887	{
		888	cctx->ssize = coro_stacksize * (long)sizeof (long);
		889	New (0, cctx->sptr, coro_stacksize, long);
583		890
584	#else
585
586	cctx->ssize = STACKSIZE * (long)sizeof (long);
587	New (0, cctx->sptr, STACKSIZE, long);
588
589	if (!cctx->sptr)	891	if (!cctx->sptr)
590	{	892	{
591	perror ("FATAL: unable to malloc stack for coroutine");	893	perror ("FATAL: unable to allocate stack for coroutine");
592	_exit (EXIT_FAILURE);	894	_exit (EXIT_FAILURE);
593	}	895	}
594		896
595	#endif	897	stack_start = cctx->sptr;
		898	stack_size = cctx->ssize;
		899	}
596		900
597	#if USE_VALGRIND	901	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);	902	coro_create (&cctx->cctx, coro_run, (void *)cctx, stack_start, stack_size);
605		903
606	return cctx;	904	return cctx;
607	}	905	}
608		906
609	static void	907	static void
610	cctx_free (coro_cctx *cctx)	908	cctx_destroy (coro_cctx *cctx)
611	{	909	{
612	if (!cctx)	910	if (!cctx)
613	return;	911	return;
614		912
615	--cctx_count;	913	--cctx_count;
616		914
617	#if USE_VALGRIND	915	#if CORO_USE_VALGRIND
618	VALGRIND_STACK_DEREGISTER (cctx->valgrind_id);	916	VALGRIND_STACK_DEREGISTER (cctx->valgrind_id);
619	#endif	917	#endif
620		918
621	#if HAVE_MMAP	919	#if HAVE_MMAP
		920	if (cctx->flags & CC_MAPPED)
622	munmap (cctx->sptr, cctx->ssize);	921	munmap (cctx->sptr, cctx->ssize);
623	#else	922	else
		923	#endif
624	Safefree (cctx->sptr);	924	Safefree (cctx->sptr);
625	#endif
626		925
627	Safefree (cctx);	926	Safefree (cctx);
628	}	927	}
629		928
630	static coro_cctx *	929	static coro_cctx *
631	cctx_get ()	930	cctx_get (pTHX)
632	{	931	{
633	coro_cctx *cctx;
634
635	if (cctx_first)	932	while (cctx_first)
636	{	933	{
		934	coro_cctx *cctx = cctx_first;
		935	cctx_first = cctx->next;
637	--cctx_idle;	936	--cctx_idle;
638	cctx = cctx_first;	937
639	cctx_first = cctx->next;	938	if (cctx->ssize >= coro_stacksize && !(cctx->flags & CC_NOREUSE))
640	}	939	return cctx;
641	else	940
642	{	941	cctx_destroy (cctx);
643	cctx = cctx_new ();
644	PL_op = PL_op->op_next;
645	}	942	}
646		943
647	return cctx;	944	return cctx_new ();
648	}	945	}
649		946
650	static void	947	static void
651	cctx_put (coro_cctx *cctx)	948	cctx_put (coro_cctx *cctx)
652	{	949	{
		950	/* free another cctx if overlimit */
		951	if (cctx_idle >= MAX_IDLE_CCTX)
		952	{
		953	coro_cctx *first = cctx_first;
		954	cctx_first = first->next;
		955	--cctx_idle;
		956
		957	cctx_destroy (first);
		958	}
		959
653	++cctx_idle;	960	++cctx_idle;
654	cctx->next = cctx_first;	961	cctx->next = cctx_first;
655	cctx_first = cctx;	962	cctx_first = cctx;
656	}	963	}
657		964
658	/* never call directly, always through the coro_state_transfer global variable */	965	/ coroutine switching ***************************************************/
		966
659	static void NOINLINE	967	static void NOINLINE
		968	transfer_check (pTHX_ struct coro prev, struct coro next)
		969	{
		970	if (prev != next)
		971	{
		972	if (!(prev->flags & (CF_RUNNING \| CF_NEW)))
		973	croak ("Coro::State::transfer called with non-running/new prev Coro::State, but can only transfer from running or new states");
		974
		975	if (next->flags & CF_RUNNING)
		976	croak ("Coro::State::transfer called with running next Coro::State, but can only transfer to inactive states");
		977
		978	if (next->flags & CF_DESTROYED)
		979	croak ("Coro::State::transfer called with destroyed next Coro::State, but can only transfer to inactive states");
		980
		981	if (PL_lex_state != LEX_NOTPARSING)
		982	croak ("Coro::State::transfer called while parsing, but this is not supported");
		983	}
		984	}
		985
		986	/* always use the TRANSFER macro */
		987	static void NOINLINE
660	transfer (struct coro prev, struct coro next, int flags)	988	transfer (pTHX_ struct coro prev, struct coro next)
661	{	989	{
662	dSTACKLEVEL;	990	dSTACKLEVEL;
663		991
664	/* sometimes transfer is only called to set idle_sp */	992	/* sometimes transfer is only called to set idle_sp */
665	if (flags == TRANSFER_SET_STACKLEVEL)	993	if (!next)
		994	{
666	((coro_cctx *)prev)->idle_sp = STACKLEVEL;	995	((coro_cctx *)prev)->idle_sp = STACKLEVEL;
		996	assert (((coro_cctx )prev)->idle_te = PL_top_env); / just for the side-effect when asserts are enabled */
		997	}
667	else if (prev != next)	998	else if (prev != next)
668	{	999	{
669	coro_cctx *prev__cctx;	1000	coro_cctx *prev__cctx;
670		1001
		1002	if (prev->flags & CF_NEW)
		1003	{
		1004	/* create a new empty context */
		1005	Newz (0, prev->cctx, 1, coro_cctx);
		1006	prev->flags &= ~CF_NEW;
		1007	prev->flags \|= CF_RUNNING;
		1008	}
		1009
		1010	prev->flags &= ~CF_RUNNING;
		1011	next->flags \|= CF_RUNNING;
		1012
671	LOCK;	1013	LOCK;
672		1014
673	if (next->mainstack)	1015	if (next->flags & CF_NEW)
674	{	1016	{
675	/* coroutine already started */	1017	/* need to start coroutine */
676	SAVE (prev, flags);	1018	next->flags &= ~CF_NEW;
677	LOAD (next);	1019	/* first get rid of the old state */
		1020	save_perl (aTHX_ prev);
		1021	/* setup coroutine call */
		1022	coro_setup (aTHX_ next);
678	}	1023	}
679	else	1024	else
680	{	1025	{
681	/* need to start coroutine */	1026	/* coroutine already started */
682	/* first get rid of the old state */	1027	save_perl (aTHX_ prev);
683	SAVE (prev, -1);	1028	load_perl (aTHX_ next);
684	/* setup coroutine call */
685	setup_coro (next);
686	/* need a stack */
687	next->cctx = 0;
688	}	1029	}
689		1030
690	if (!prev->cctx)
691	/* create a new empty context */
692	Newz (0, prev->cctx, 1, coro_cctx);
693
694	prev__cctx = prev->cctx;	1031	prev__cctx = prev->cctx;
695		1032
696	/* possibly "free" the cctx */	1033	/* possibly "free" the cctx */
697	if (prev__cctx->idle_sp == STACKLEVEL)	1034	if (prev__cctx->idle_sp == STACKLEVEL && !(prev__cctx->flags & CC_TRACE))
698	{	1035	{
		1036	/* I assume that STACKLEVEL is a stronger indicator than PL_top_env changes */
		1037	assert (("ERROR: current top_env must equal previous top_env", PL_top_env == prev__cctx->idle_te));
		1038
		1039	prev->cctx = 0;
		1040
699	cctx_put (prev__cctx);	1041	cctx_put (prev__cctx);
700	prev->cctx = 0;
701	}	1042	}
702		1043
		1044	++next->usecount;
		1045
703	if (!next->cctx)	1046	if (!next->cctx)
704	next->cctx = cctx_get ();	1047	next->cctx = cctx_get (aTHX);
705		1048
706	if (prev__cctx != next->cctx)	1049	if (prev__cctx != next->cctx)
707	{	1050	{
708	prev__cctx->top_env = PL_top_env;	1051	prev__cctx->top_env = PL_top_env;
709	PL_top_env = next->cctx->top_env;	1052	PL_top_env = next->cctx->top_env;
710	coro_transfer (&prev__cctx->cctx, &next->cctx->cctx);	1053	coro_transfer (&prev__cctx->cctx, &next->cctx->cctx);
711	}	1054	}
712		1055
713	free_coro_mortal ();	1056	free_coro_mortal (aTHX);
714
715	UNLOCK;	1057	UNLOCK;
716	}	1058	}
717	}	1059	}
718		1060
719	struct transfer_args	1061	struct transfer_args
720	{	1062	{
721	struct coro prev, next;	1063	struct coro prev, next;
722	int flags;
723	};	1064	};
724		1065
725	#define TRANSFER(ta) transfer ((ta).prev, (ta).next, (ta).flags)	1066	#define TRANSFER(ta) transfer (aTHX_ (ta).prev, (ta).next)
		1067	#define TRANSFER_CHECK(ta) transfer_check (aTHX_ (ta).prev, (ta).next)
726		1068
		1069	/ high level stuff ******************************************************/
		1070
727	static void	1071	static int
728	coro_state_destroy (struct coro *coro)	1072	coro_state_destroy (pTHX_ struct coro *coro)
729	{	1073	{
730	if (coro->refcnt--)	1074	if (coro->flags & CF_DESTROYED)
731	return;	1075	return 0;
		1076
		1077	coro->flags \|= CF_DESTROYED;
		1078
		1079	if (coro->flags & CF_READY)
		1080	{
		1081	/* reduce nready, as destroying a ready coro effectively unreadies it */
		1082	/* alternative: look through all ready queues and remove the coro */
		1083	LOCK;
		1084	--coro_nready;
		1085	UNLOCK;
		1086	}
		1087	else
		1088	coro->flags \|= CF_READY; /* make sure it is NOT put into the readyqueue */
732		1089
733	if (coro->mainstack && coro->mainstack != main_mainstack)	1090	if (coro->mainstack && coro->mainstack != main_mainstack)
734	{	1091	{
735	struct coro temp;	1092	struct coro temp;
736		1093
737	SAVE ((&temp), TRANSFER_SAVE_ALL);	1094	if (coro->flags & CF_RUNNING)
738	LOAD (coro);	1095	croak ("FATAL: tried to destroy currently running coroutine");
739		1096
740	coro_destroy_stacks ();	1097	save_perl (aTHX_ &temp);
		1098	load_perl (aTHX_ coro);
741		1099
		1100	coro_destroy (aTHX_ coro);
		1101
742	LOAD ((&temp)); /* this will get rid of defsv etc.. */	1102	load_perl (aTHX_ &temp); /* this will get rid of defsv etc.. */
743		1103
744	coro->mainstack = 0;	1104	coro->mainstack = 0;
745	}	1105	}
746		1106
747	cctx_free (coro->cctx);	1107	cctx_destroy (coro->cctx);
748	SvREFCNT_dec (coro->args);	1108	SvREFCNT_dec (coro->args);
749	Safefree (coro);	1109
		1110	if (coro->next) coro->next->prev = coro->prev;
		1111	if (coro->prev) coro->prev->next = coro->next;
		1112	if (coro == coro_first) coro_first = coro->next;
		1113
		1114	return 1;
750	}	1115	}
751		1116
752	static int	1117	static int
753	coro_state_clear (pTHX_ SV sv, MAGIC mg)	1118	coro_state_free (pTHX_ SV sv, MAGIC mg)
754	{	1119	{
755	struct coro coro = (struct coro )mg->mg_ptr;	1120	struct coro coro = (struct coro )mg->mg_ptr;
756	mg->mg_ptr = 0;	1121	mg->mg_ptr = 0;
757		1122
		1123	coro->hv = 0;
		1124
		1125	if (--coro->refcnt < 0)
		1126	{
758	coro_state_destroy (coro);	1127	coro_state_destroy (aTHX_ coro);
		1128	Safefree (coro);
		1129	}
759		1130
760	return 0;	1131	return 0;
761	}	1132	}
762		1133
763	static int	1134	static int
…		…
770	return 0;	1141	return 0;
771	}	1142	}
772		1143
773	static MGVTBL coro_state_vtbl = {	1144	static MGVTBL coro_state_vtbl = {
774	0, 0, 0, 0,	1145	0, 0, 0, 0,
775	coro_state_clear,	1146	coro_state_free,
776	0,	1147	0,
777	#ifdef MGf_DUP	1148	#ifdef MGf_DUP
778	coro_state_dup,	1149	coro_state_dup,
779	#else	1150	#else
780	# define MGf_DUP 0	1151	# define MGf_DUP 0
781	#endif	1152	#endif
782	};	1153	};
783		1154
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	1155	static void
807	prepare_transfer (struct transfer_args ta, SV prev, SV *next, int flags)	1156	prepare_transfer (pTHX_ struct transfer_args ta, SV prev_sv, SV *next_sv)
808	{	1157	{
809	ta->prev = SvSTATE (prev);	1158	ta->prev = SvSTATE (prev_sv);
810	ta->next = SvSTATE (next);	1159	ta->next = SvSTATE (next_sv);
811	ta->flags = flags;	1160	TRANSFER_CHECK (*ta);
812	}	1161	}
813		1162
814	static void	1163	static void
815	api_transfer (SV prev, SV next, int flags)	1164	api_transfer (SV prev_sv, SV next_sv)
816	{	1165	{
817	dTHX;	1166	dTHX;
818	struct transfer_args ta;	1167	struct transfer_args ta;
819		1168
820	prepare_transfer (&ta, prev, next, flags);	1169	prepare_transfer (aTHX_ &ta, prev_sv, next_sv);
821	TRANSFER (ta);	1170	TRANSFER (ta);
822	}	1171	}
823		1172
824	/ Coro ******************************************************************/	1173	/ Coro ******************************************************************/
825		1174
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	1175	static void
839	coro_enq (SV *sv)	1176	coro_enq (pTHX_ SV *coro_sv)
840	{	1177	{
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);	1178	av_push (coro_ready [SvSTATE (coro_sv)->prio - PRIO_MIN], coro_sv);
849	coro_nready++;
850	}	1179	}
851		1180
852	static SV *	1181	static SV *
853	coro_deq (int min_prio)	1182	coro_deq (pTHX_ int min_prio)
854	{	1183	{
855	int prio = PRIO_MAX - PRIO_MIN;	1184	int prio = PRIO_MAX - PRIO_MIN;
856		1185
857	min_prio -= PRIO_MIN;	1186	min_prio -= PRIO_MIN;
858	if (min_prio < 0)	1187	if (min_prio < 0)
859	min_prio = 0;	1188	min_prio = 0;
860		1189
861	for (prio = PRIO_MAX - PRIO_MIN + 1; --prio >= min_prio; )	1190	for (prio = PRIO_MAX - PRIO_MIN + 1; --prio >= min_prio; )
862	if (AvFILLp (coro_ready [prio]) >= 0)	1191	if (AvFILLp (coro_ready [prio]) >= 0)
863	{
864	coro_nready--;
865	return av_shift (coro_ready [prio]);	1192	return av_shift (coro_ready [prio]);
866	}
867		1193
868	return 0;	1194	return 0;
869	}	1195	}
870		1196
871	static void	1197	static int
872	api_ready (SV *coro)	1198	api_ready (SV *coro_sv)
873	{	1199	{
874	dTHX;	1200	dTHX;
		1201	struct coro *coro;
875		1202
876	if (SvROK (coro))	1203	if (SvROK (coro_sv))
877	coro = SvRV (coro);	1204	coro_sv = SvRV (coro_sv);
		1205
		1206	coro = SvSTATE (coro_sv);
		1207
		1208	if (coro->flags & CF_READY)
		1209	return 0;
		1210
		1211	coro->flags \|= CF_READY;
878		1212
879	LOCK;	1213	LOCK;
880	coro_enq (SvREFCNT_inc (coro));	1214	coro_enq (aTHX_ SvREFCNT_inc (coro_sv));
		1215	++coro_nready;
881	UNLOCK;	1216	UNLOCK;
882	}
883		1217
		1218	return 1;
		1219	}
		1220
884	static void	1221	static int
		1222	api_is_ready (SV *coro_sv)
		1223	{
		1224	dTHX;
		1225	return !!(SvSTATE (coro_sv)->flags & CF_READY);
		1226	}
		1227
		1228	static void
885	prepare_schedule (struct transfer_args *ta)	1229	prepare_schedule (pTHX_ struct transfer_args *ta)
886	{	1230	{
887	SV current, prev, *next;	1231	SV prev_sv, next_sv;
888
889	current = GvSV (coro_current);
890		1232
891	for (;;)	1233	for (;;)
892	{	1234	{
893	LOCK;	1235	LOCK;
894	next = coro_deq (PRIO_MIN);	1236	next_sv = coro_deq (aTHX_ PRIO_MIN);
		1237
		1238	/* nothing to schedule: call the idle handler */
		1239	if (!next_sv)
		1240	{
		1241	dSP;
		1242	UNLOCK;
		1243
		1244	ENTER;
		1245	SAVETMPS;
		1246
		1247	PUSHMARK (SP);
		1248	PUTBACK;
		1249	call_sv (get_sv ("Coro::idle", FALSE), G_DISCARD);
		1250
		1251	FREETMPS;
		1252	LEAVE;
		1253	continue;
		1254	}
		1255
		1256	ta->next = SvSTATE (next_sv);
		1257
		1258	/* cannot transfer to destroyed coros, skip and look for next */
		1259	if (ta->next->flags & CF_DESTROYED)
		1260	{
		1261	UNLOCK;
		1262	SvREFCNT_dec (next_sv);
		1263	/* coro_nready is already taken care of by destroy */
		1264	continue;
		1265	}
		1266
		1267	--coro_nready;
895	UNLOCK;	1268	UNLOCK;
896
897	if (next)
898	break;	1269	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	}	1270	}
913	}
914
915	prev = SvRV (current);
916	SvRV (current) = next;
917		1271
918	/* free this only after the transfer */	1272	/* free this only after the transfer */
		1273	prev_sv = SvRV (coro_current);
		1274	ta->prev = SvSTATE (prev_sv);
		1275	TRANSFER_CHECK (*ta);
		1276	assert (ta->next->flags & CF_READY);
		1277	ta->next->flags &= ~CF_READY;
		1278	SvRV_set (coro_current, next_sv);
		1279
919	LOCK;	1280	LOCK;
920	free_coro_mortal ();	1281	free_coro_mortal (aTHX);
		1282	coro_mortal = prev_sv;
921	UNLOCK;	1283	UNLOCK;
922	coro_mortal = prev;
923
924	ta->prev = SvSTATE (prev);
925	ta->next = SvSTATE (next);
926	ta->flags = TRANSFER_SAVE_ALL;
927	}	1284	}
928		1285
929	static void	1286	static void
930	prepare_cede (struct transfer_args *ta)	1287	prepare_cede (pTHX_ struct transfer_args *ta)
931	{	1288	{
932	LOCK;	1289	api_ready (coro_current);
933	coro_enq (SvREFCNT_inc (SvRV (GvSV (coro_current))));
934	UNLOCK;
935
936	prepare_schedule (ta);	1290	prepare_schedule (aTHX_ ta);
		1291	}
		1292
		1293	static int
		1294	prepare_cede_notself (pTHX_ struct transfer_args *ta)
		1295	{
		1296	if (coro_nready)
		1297	{
		1298	SV *prev = SvRV (coro_current);
		1299	prepare_schedule (aTHX_ ta);
		1300	api_ready (prev);
		1301	return 1;
		1302	}
		1303	else
		1304	return 0;
937	}	1305	}
938		1306
939	static void	1307	static void
940	api_schedule (void)	1308	api_schedule (void)
941	{	1309	{
942	dTHX;	1310	dTHX;
943	struct transfer_args ta;	1311	struct transfer_args ta;
944		1312
945	prepare_schedule (&ta);	1313	prepare_schedule (aTHX_ &ta);
946	TRANSFER (ta);	1314	TRANSFER (ta);
947	}	1315	}
948		1316
949	static void	1317	static int
950	api_cede (void)	1318	api_cede (void)
951	{	1319	{
952	dTHX;	1320	dTHX;
953	struct transfer_args ta;	1321	struct transfer_args ta;
954		1322
955	prepare_cede (&ta);	1323	prepare_cede (aTHX_ &ta);
		1324
		1325	if (ta.prev != ta.next)
		1326	{
956	TRANSFER (ta);	1327	TRANSFER (ta);
		1328	return 1;
		1329	}
		1330	else
		1331	return 0;
957	}	1332	}
958		1333
		1334	static int
		1335	api_cede_notself (void)
		1336	{
		1337	dTHX;
		1338	struct transfer_args ta;
		1339
		1340	if (prepare_cede_notself (aTHX_ &ta))
		1341	{
		1342	TRANSFER (ta);
		1343	return 1;
		1344	}
		1345	else
		1346	return 0;
		1347	}
		1348
		1349	static void
		1350	api_trace (SV *coro_sv, int flags)
		1351	{
		1352	dTHX;
		1353	struct coro *coro = SvSTATE (coro_sv);
		1354
		1355	if (flags & CC_TRACE)
		1356	{
		1357	if (!coro->cctx)
		1358	coro->cctx = cctx_new ();
		1359	else if (!(coro->cctx->flags & CC_TRACE))
		1360	croak ("cannot enable tracing on coroutine with custom stack");
		1361
		1362	coro->cctx->flags \|= CC_NOREUSE \| (flags & (CC_TRACE \| CC_TRACE_ALL));
		1363	}
		1364	else if (coro->cctx && coro->cctx->flags & CC_TRACE)
		1365	{
		1366	coro->cctx->flags &= ~(CC_TRACE \| CC_TRACE_ALL);
		1367
		1368	if (coro->flags & CF_RUNNING)
		1369	PL_runops = RUNOPS_DEFAULT;
		1370	else
		1371	coro->runops = RUNOPS_DEFAULT;
		1372	}
		1373	}
		1374
959	MODULE = Coro::State PACKAGE = Coro::State	1375	MODULE = Coro::State PACKAGE = Coro::State PREFIX = api_
960		1376
961	PROTOTYPES: DISABLE	1377	PROTOTYPES: DISABLE
962		1378
963	BOOT:	1379	BOOT:
964	{	1380	{
965	#ifdef USE_ITHREADS	1381	#ifdef USE_ITHREADS
966	MUTEX_INIT (&coro_mutex);	1382	MUTEX_INIT (&coro_mutex);
967	#endif	1383	#endif
968	BOOT_PAGESIZE;	1384	BOOT_PAGESIZE;
969		1385
		1386	irsgv = gv_fetchpv ("/", 1, SVt_PV);
		1387
970	coro_state_stash = gv_stashpv ("Coro::State", TRUE);	1388	coro_state_stash = gv_stashpv ("Coro::State", TRUE);
971		1389
972	newCONSTSUB (coro_state_stash, "SAVE_DEFAV", newSViv (TRANSFER_SAVE_DEFAV));	1390	newCONSTSUB (coro_state_stash, "CC_TRACE" , newSViv (CC_TRACE));
973	newCONSTSUB (coro_state_stash, "SAVE_DEFSV", newSViv (TRANSFER_SAVE_DEFSV));	1391	newCONSTSUB (coro_state_stash, "CC_TRACE_SUB" , newSViv (CC_TRACE_SUB));
974	newCONSTSUB (coro_state_stash, "SAVE_ERRSV", newSViv (TRANSFER_SAVE_ERRSV));	1392	newCONSTSUB (coro_state_stash, "CC_TRACE_LINE", newSViv (CC_TRACE_LINE));
		1393	newCONSTSUB (coro_state_stash, "CC_TRACE_ALL" , newSViv (CC_TRACE_ALL));
975		1394
976	main_mainstack = PL_mainstack;	1395	main_mainstack = PL_mainstack;
		1396	main_top_env = PL_top_env;
		1397
		1398	while (main_top_env->je_prev)
		1399	main_top_env = main_top_env->je_prev;
977		1400
978	coroapi.ver = CORO_API_VERSION;	1401	coroapi.ver = CORO_API_VERSION;
979	coroapi.transfer = api_transfer;	1402	coroapi.transfer = api_transfer;
980		1403
981	assert (("PRIO_NORMAL must be 0", !PRIO_NORMAL));	1404	assert (("PRIO_NORMAL must be 0", !PRIO_NORMAL));
…		…
988	struct coro *coro;	1411	struct coro *coro;
989	HV *hv;	1412	HV *hv;
990	int i;	1413	int i;
991		1414
992	Newz (0, coro, 1, struct coro);	1415	Newz (0, coro, 1, struct coro);
993	coro->args = newAV ();	1416	coro->args = newAV ();
		1417	coro->flags = CF_NEW;
994		1418
		1419	if (coro_first) coro_first->prev = coro;
		1420	coro->next = coro_first;
		1421	coro_first = coro;
		1422
995	hv = newHV ();	1423	coro->hv = hv = newHV ();
996	sv_magicext ((SV )hv, 0, PERL_MAGIC_ext, &coro_state_vtbl, (char )coro, 0)->mg_flags \|= MGf_DUP;	1424	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));	1425	RETVAL = sv_bless (newRV_noinc ((SV *)hv), gv_stashpv (klass, 1));
998		1426
999	for (i = 1; i < items; i++)	1427	for (i = 1; i < items; i++)
1000	av_push (coro->args, newSVsv (ST (i)));	1428	av_push (coro->args, newSVsv (ST (i)));
1001	}	1429	}
1002	OUTPUT:	1430	OUTPUT:
1003	RETVAL	1431	RETVAL
1004		1432
		1433	# these not obviously related functions are all rolled into the same xs
		1434	# function to increase chances that they all will call transfer with the same
		1435	# stack offset
1005	void	1436	void
1006	_set_stacklevel (...)	1437	_set_stacklevel (...)
1007	ALIAS:	1438	ALIAS:
1008	Coro::State::transfer = 1	1439	Coro::State::transfer = 1
1009	Coro::schedule = 2	1440	Coro::schedule = 2
1010	Coro::cede = 3	1441	Coro::cede = 3
1011	Coro::Cont::yield = 4	1442	Coro::cede_notself = 4
1012	CODE:	1443	CODE:
1013	{	1444	{
1014	struct transfer_args ta;	1445	struct transfer_args ta;
1015		1446
1016	switch (ix)	1447	switch (ix)
1017	{	1448	{
1018	case 0:	1449	case 0:
1019	ta.prev = (struct coro )INT2PTR (coro_cctx , SvIV (ST (0)));	1450	ta.prev = (struct coro )INT2PTR (coro_cctx , SvIV (ST (0)));
1020	ta.next = 0;	1451	ta.next = 0;
1021	ta.flags = TRANSFER_SET_STACKLEVEL;
1022	break;	1452	break;
1023		1453
1024	case 1:	1454	case 1:
1025	if (items != 3)	1455	if (items != 2)
1026	croak ("Coro::State::transfer(prev,next,flags) expects three arguments, not %d", items);	1456	croak ("Coro::State::transfer (prev,next) expects two arguments, not %d", items);
1027		1457
1028	prepare_transfer (&ta, ST (0), ST (1), SvIV (ST (2)));	1458	prepare_transfer (aTHX_ &ta, ST (0), ST (1));
1029	break;	1459	break;
1030		1460
1031	case 2:	1461	case 2:
1032	prepare_schedule (&ta);	1462	prepare_schedule (aTHX_ &ta);
1033	break;	1463	break;
1034		1464
1035	case 3:	1465	case 3:
1036	prepare_cede (&ta);	1466	prepare_cede (aTHX_ &ta);
1037	break;	1467	break;
1038		1468
1039	case 4:	1469	case 4:
1040	{	1470	if (!prepare_cede_notself (aTHX_ &ta))
1041	SV *yieldstack;	1471	XSRETURN_EMPTY;
1042	SV *sv;
1043	AV *defav = GvAV (PL_defgv);
1044		1472
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;	1473	break;
1064
1065	}	1474	}
1066		1475
		1476	BARRIER;
1067	TRANSFER (ta);	1477	TRANSFER (ta);
1068	}
1069		1478
1070	void	1479	if (GIMME_V != G_VOID && ta.next != ta.prev)
1071	_clone_state_from (SV dst, SV src)	1480	XSRETURN_YES;
		1481	}
		1482
		1483	bool
		1484	_destroy (SV *coro_sv)
1072	CODE:	1485	CODE:
1073	{	1486	RETVAL = coro_state_destroy (aTHX_ SvSTATE (coro_sv));
1074	struct coro *coro_src = SvSTATE (src);	1487	OUTPUT:
1075		1488	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		1489
1082	void	1490	void
1083	_exit (code)	1491	_exit (code)
1084	int code	1492	int code
1085	PROTOTYPE: $	1493	PROTOTYPE: $
1086	CODE:	1494	CODE:
1087	_exit (code);	1495	_exit (code);
1088		1496
1089	int	1497	int
		1498	cctx_stacksize (int new_stacksize = 0)
		1499	CODE:
		1500	RETVAL = coro_stacksize;
		1501	if (new_stacksize)
		1502	coro_stacksize = new_stacksize;
		1503	OUTPUT:
		1504	RETVAL
		1505
		1506	int
1090	cctx_count ()	1507	cctx_count ()
1091	CODE:	1508	CODE:
1092	RETVAL = cctx_count;	1509	RETVAL = cctx_count;
1093	OUTPUT:	1510	OUTPUT:
1094	RETVAL	1511	RETVAL
…		…
1098	CODE:	1515	CODE:
1099	RETVAL = cctx_idle;	1516	RETVAL = cctx_idle;
1100	OUTPUT:	1517	OUTPUT:
1101	RETVAL	1518	RETVAL
1102		1519
		1520	void
		1521	list ()
		1522	PPCODE:
		1523	{
		1524	struct coro *coro;
		1525	for (coro = coro_first; coro; coro = coro->next)
		1526	if (coro->hv)
		1527	XPUSHs (sv_2mortal (newRV_inc ((SV *)coro->hv)));
		1528	}
		1529
		1530	void
		1531	call (Coro::State coro, SV *coderef)
		1532	ALIAS:
		1533	eval = 1
		1534	CODE:
		1535	{
		1536	if (coro->mainstack)
		1537	{
		1538	struct coro temp;
		1539	Zero (&temp, 1, struct coro);
		1540
		1541	if (!(coro->flags & CF_RUNNING))
		1542	{
		1543	save_perl (aTHX_ &temp);
		1544	load_perl (aTHX_ coro);
		1545	}
		1546
		1547	{
		1548	dSP;
		1549	ENTER;
		1550	SAVETMPS;
		1551	PUSHMARK (SP);
		1552	PUTBACK;
		1553	if (ix)
		1554	eval_sv (coderef, 0);
		1555	else
		1556	call_sv (coderef, G_KEEPERR \| G_EVAL \| G_VOID \| G_DISCARD);
		1557	SPAGAIN;
		1558	FREETMPS;
		1559	LEAVE;
		1560	PUTBACK;
		1561	}
		1562
		1563	if (!(coro->flags & CF_RUNNING))
		1564	{
		1565	save_perl (aTHX_ coro);
		1566	load_perl (aTHX_ &temp);
		1567	}
		1568	}
		1569	}
		1570
		1571	SV *
		1572	is_ready (Coro::State coro)
		1573	PROTOTYPE: $
		1574	ALIAS:
		1575	is_ready = CF_READY
		1576	is_running = CF_RUNNING
		1577	is_new = CF_NEW
		1578	is_destroyed = CF_DESTROYED
		1579	CODE:
		1580	RETVAL = boolSV (coro->flags & ix);
		1581	OUTPUT:
		1582	RETVAL
		1583
		1584	void
		1585	api_trace (SV *coro, int flags = CC_TRACE \| CC_TRACE_SUB)
		1586
		1587	SV *
		1588	has_stack (Coro::State coro)
		1589	PROTOTYPE: $
		1590	CODE:
		1591	RETVAL = boolSV (!!coro->cctx);
		1592	OUTPUT:
		1593	RETVAL
		1594
		1595	int
		1596	is_traced (Coro::State coro)
		1597	PROTOTYPE: $
		1598	CODE:
		1599	RETVAL = (coro->cctx ? coro->cctx->flags : 0) & CC_TRACE_ALL;
		1600	OUTPUT:
		1601	RETVAL
		1602
		1603	IV
		1604	rss (Coro::State coro)
		1605	PROTOTYPE: $
		1606	ALIAS:
		1607	usecount = 1
		1608	CODE:
		1609	switch (ix)
		1610	{
		1611	case 0: RETVAL = coro_rss (aTHX_ coro); break;
		1612	case 1: RETVAL = coro->usecount; break;
		1613	}
		1614	OUTPUT:
		1615	RETVAL
		1616
		1617
1103	MODULE = Coro::State PACKAGE = Coro	1618	MODULE = Coro::State PACKAGE = Coro
1104		1619
1105	BOOT:	1620	BOOT:
1106	{	1621	{
1107	int i;	1622	int i;
		1623
		1624	sv_pool_rss = get_sv ("Coro::POOL_RSS" , TRUE);
		1625	sv_pool_size = get_sv ("Coro::POOL_SIZE" , TRUE);
		1626	av_async_pool = get_av ("Coro::async_pool", TRUE);
		1627
		1628	coro_current = get_sv ("Coro::current", FALSE);
		1629	SvREADONLY_on (coro_current);
1108		1630
1109	coro_stash = gv_stashpv ("Coro", TRUE);	1631	coro_stash = gv_stashpv ("Coro", TRUE);
1110		1632
1111	newCONSTSUB (coro_stash, "PRIO_MAX", newSViv (PRIO_MAX));	1633	newCONSTSUB (coro_stash, "PRIO_MAX", newSViv (PRIO_MAX));
1112	newCONSTSUB (coro_stash, "PRIO_HIGH", newSViv (PRIO_HIGH));	1634	newCONSTSUB (coro_stash, "PRIO_HIGH", newSViv (PRIO_HIGH));
1113	newCONSTSUB (coro_stash, "PRIO_NORMAL", newSViv (PRIO_NORMAL));	1635	newCONSTSUB (coro_stash, "PRIO_NORMAL", newSViv (PRIO_NORMAL));
1114	newCONSTSUB (coro_stash, "PRIO_LOW", newSViv (PRIO_LOW));	1636	newCONSTSUB (coro_stash, "PRIO_LOW", newSViv (PRIO_LOW));
1115	newCONSTSUB (coro_stash, "PRIO_IDLE", newSViv (PRIO_IDLE));	1637	newCONSTSUB (coro_stash, "PRIO_IDLE", newSViv (PRIO_IDLE));
1116	newCONSTSUB (coro_stash, "PRIO_MIN", newSViv (PRIO_MIN));	1638	newCONSTSUB (coro_stash, "PRIO_MIN", newSViv (PRIO_MIN));
1117		1639
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--; )	1640	for (i = PRIO_MAX - PRIO_MIN + 1; i--; )
1122	coro_ready[i] = newAV ();	1641	coro_ready[i] = newAV ();
1123		1642
1124	{	1643	{
1125	SV *sv = perl_get_sv("Coro::API", 1);	1644	SV *sv = perl_get_sv("Coro::API", 1);
1126		1645
1127	coroapi.schedule = api_schedule;	1646	coroapi.schedule = api_schedule;
1128	coroapi.cede = api_cede;	1647	coroapi.cede = api_cede;
		1648	coroapi.cede_notself = api_cede_notself;
1129	coroapi.ready = api_ready;	1649	coroapi.ready = api_ready;
		1650	coroapi.is_ready = api_is_ready;
1130	coroapi.nready = &coro_nready;	1651	coroapi.nready = &coro_nready;
1131	coroapi.current = coro_current;	1652	coroapi.current = coro_current;
1132		1653
1133	GCoroAPI = &coroapi;	1654	GCoroAPI = &coroapi;
1134	sv_setiv (sv, (IV)&coroapi);	1655	sv_setiv (sv, (IV)&coroapi);
1135	SvREADONLY_on (sv);	1656	SvREADONLY_on (sv);
1136	}	1657	}
1137	}	1658	}
		1659
		1660	void
		1661	_set_current (SV *current)
		1662	PROTOTYPE: $
		1663	CODE:
		1664	SvREFCNT_dec (SvRV (coro_current));
		1665	SvRV_set (coro_current, SvREFCNT_inc (SvRV (current)));
1138		1666
1139	int	1667	int
1140	prio (Coro::State coro, int newprio = 0)	1668	prio (Coro::State coro, int newprio = 0)
1141	ALIAS:	1669	ALIAS:
1142	nice = 1	1670	nice = 1
…		…
1145	RETVAL = coro->prio;	1673	RETVAL = coro->prio;
1146		1674
1147	if (items > 1)	1675	if (items > 1)
1148	{	1676	{
1149	if (ix)	1677	if (ix)
1150	newprio += coro->prio;	1678	newprio = coro->prio - newprio;
1151		1679
1152	if (newprio < PRIO_MIN) newprio = PRIO_MIN;	1680	if (newprio < PRIO_MIN) newprio = PRIO_MIN;
1153	if (newprio > PRIO_MAX) newprio = PRIO_MAX;	1681	if (newprio > PRIO_MAX) newprio = PRIO_MAX;
1154		1682
1155	coro->prio = newprio;	1683	coro->prio = newprio;
1156	}	1684	}
1157	}	1685	}
		1686	OUTPUT:
		1687	RETVAL
1158		1688
1159	void	1689	SV *
1160	ready (SV *self)	1690	ready (SV *self)
1161	PROTOTYPE: $	1691	PROTOTYPE: $
1162	CODE:	1692	CODE:
1163	api_ready (self);	1693	RETVAL = boolSV (api_ready (self));
		1694	OUTPUT:
		1695	RETVAL
1164		1696
1165	int	1697	int
1166	nready (...)	1698	nready (...)
1167	PROTOTYPE:	1699	PROTOTYPE:
1168	CODE:	1700	CODE:
1169	RETVAL = coro_nready;	1701	RETVAL = coro_nready;
1170	OUTPUT:	1702	OUTPUT:
1171	RETVAL	1703	RETVAL
1172		1704
		1705	# for async_pool speedup
		1706	void
		1707	_pool_1 (SV *cb)
		1708	CODE:
		1709	{
		1710	int i, len;
		1711	HV hv = (HV )SvRV (coro_current);
		1712	AV *defav = GvAV (PL_defgv);
		1713	SV *invoke = hv_delete (hv, "_invoke", sizeof ("_invoke") - 1, 0);
		1714	AV *invoke_av;
		1715
		1716	if (!invoke)
		1717	croak ("\3terminate\2\n");
		1718
		1719	hv_store (hv, "desc", sizeof ("desc") - 1,
		1720	newSVpvn ("[async_pool]", sizeof ("[async_pool]") - 1), 0);
		1721
		1722	invoke_av = (AV *)SvRV (invoke);
		1723	len = av_len (invoke_av);
		1724
		1725	sv_setsv (cb, AvARRAY (invoke_av)[0]);
		1726
		1727	if (len > 0)
		1728	{
		1729	av_fill (defav, len - 1);
		1730	for (i = 0; i < len; ++i)
		1731	av_store (defav, i, SvREFCNT_inc (AvARRAY (invoke_av)[i + 1]));
		1732	}
		1733
		1734	SvREFCNT_dec (invoke);
		1735	}
		1736
		1737	void
		1738	_pool_2 (SV *cb)
		1739	CODE:
		1740	{
		1741	struct coro *coro = SvSTATE (coro_current);
		1742
		1743	sv_setsv (cb, &PL_sv_undef);
		1744
		1745	if (coro_rss (aTHX_ coro) > SvIV (sv_pool_rss)
		1746	\|\| av_len (av_async_pool) + 1 >= SvIV (sv_pool_size))
		1747	croak ("\3terminate\2\n");
		1748
		1749	av_clear (GvAV (PL_defgv));
		1750	hv_store ((HV *)SvRV (coro_current), "desc", sizeof ("desc") - 1,
		1751	newSVpvn ("[async_pool idle]", sizeof ("[async_pool idle]") - 1), 0);
		1752
		1753	coro->prio = 0;
		1754
		1755	if (coro->cctx && (coro->cctx->flags & CC_TRACE))
		1756	api_trace (coro_current, 0);
		1757
		1758	av_push (av_async_pool, newSVsv (coro_current));
		1759	}
		1760
		1761
1173	MODULE = Coro::State PACKAGE = Coro::AIO	1762	MODULE = Coro::State PACKAGE = Coro::AIO
1174		1763
1175	SV *	1764	SV *
1176	_get_state ()	1765	_get_state ()
1177	CODE:	1766	CODE:
1178	{	1767	{
1179	struct {	1768	struct io_state *data;
1180	int errorno;
1181	int laststype;
1182	int laststatval;
1183	Stat_t statcache;
1184	} data;
1185		1769
		1770	RETVAL = newSV (sizeof (struct io_state));
		1771	data = (struct io_state *)SvPVX (RETVAL);
		1772	SvCUR_set (RETVAL, sizeof (struct io_state));
		1773	SvPOK_only (RETVAL);
		1774
1186	data.errorno = errno;	1775	data->errorno = errno;
1187	data.laststype = PL_laststype;	1776	data->laststype = PL_laststype;
1188	data.laststatval = PL_laststatval;	1777	data->laststatval = PL_laststatval;
1189	data.statcache = PL_statcache;	1778	data->statcache = PL_statcache;
1190
1191	RETVAL = newSVpvn ((char *)&data, sizeof data);
1192	}	1779	}
1193	OUTPUT:	1780	OUTPUT:
1194	RETVAL	1781	RETVAL
1195		1782
1196	void	1783	void
1197	_set_state (char *data_)	1784	_set_state (char *data_)
1198	PROTOTYPE: $	1785	PROTOTYPE: $
1199	CODE:	1786	CODE:
1200	{	1787	{
1201	struct {	1788	struct io_state data = (void )data_;
1202	int errorno;
1203	int laststype;
1204	int laststatval;
1205	Stat_t statcache;
1206	} data = (void )data_;
1207		1789
1208	errno = data->errorno;	1790	errno = data->errorno;
1209	PL_laststype = data->laststype;	1791	PL_laststype = data->laststype;
1210	PL_laststatval = data->laststatval;	1792	PL_laststatval = data->laststatval;
1211	PL_statcache = data->statcache;	1793	PL_statcache = data->statcache;
1212	}	1794	}
		1795

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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 1.179 by root, Wed Oct 3 16:03:17 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 1.179 by root, Wed Oct 3 16:03:17 2007 UTC