[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 1.186 by root, Fri Oct 5 20:10:42 2007 UTC

…		…
1	#include "libcoro/coro.c"	1	#include "libcoro/coro.c"
		2
		3	#define PERL_NO_GET_CONTEXT
2		4
3	#include "EXTERN.h"	5	#include "EXTERN.h"
4	#include "perl.h"	6	#include "perl.h"
5	#include "XSUB.h"	7	#include "XSUB.h"
6		8
7	#include "patchlevel.h"	9	#include "patchlevel.h"
8		10
9	#if USE_VALGRIND
10	# include <valgrind/valgrind.h>
11	#endif
12
13	#define PERL_VERSION_ATLEAST(a,b,c) \
14	(PERL_REVISION > (a) \
15	\|\| (PERL_REVISION == (a) \
16	&& (PERL_VERSION > (b) \
17	\|\| (PERL_VERSION == (b) && PERLSUBVERSION >= (c)))))
18
19	#if !PERL_VERSION_ATLEAST (5,6,0)
20	# ifndef PL_ppaddr
21	# define PL_ppaddr ppaddr
22	# endif
23	# ifndef call_sv
24	# define call_sv perl_call_sv
25	# endif
26	# ifndef get_sv
27	# define get_sv perl_get_sv
28	# endif
29	# ifndef get_cv
30	# define get_cv perl_get_cv
31	# endif
32	# ifndef IS_PADGV
33	# define IS_PADGV(v) 0
34	# endif
35	# ifndef IS_PADCONST
36	# define IS_PADCONST(v) 0
37	# endif
38	#endif
39
40	#include <stdio.h>	11	#include <stdio.h>
41	#include <errno.h>	12	#include <errno.h>
42		13	#include <assert.h>
43	#if !__i386 && !__x86_64 && !__powerpc && !__m68k && !__alpha && !__mips && !__sparc64
44	# undef STACKGUARD
45	#endif
46
47	#ifndef STACKGUARD
48	# define STACKGUARD 0
49	#endif
50		14
51	#ifdef HAVE_MMAP	15	#ifdef HAVE_MMAP
52	# include <unistd.h>	16	# include <unistd.h>
53	# include <sys/mman.h>	17	# include <sys/mman.h>
54	# ifndef MAP_ANONYMOUS	18	# ifndef MAP_ANONYMOUS
69	#else	33	#else
70	# define PAGESIZE 0	34	# define PAGESIZE 0
71	# define BOOT_PAGESIZE (void)0	35	# define BOOT_PAGESIZE (void)0
72	#endif	36	#endif
73		37
74	/* The next macro should declare a variable stacklevel that contains and approximation	38	#if CORO_USE_VALGRIND
75	* to the current C stack pointer. Its property is that it changes with each call	39	# include <valgrind/valgrind.h>
76	* and should be unique. */	40	# define REGISTER_STACK(cctx,start,end) (cctx)->valgrind_id = VALGRIND_STACK_REGISTER ((start), (end))
		41	#else
		42	# define REGISTER_STACK(cctx,start,end)
		43	#endif
		44
		45	/* the maximum number of idle cctx that will be pooled */
		46	#define MAX_IDLE_CCTX 8
		47
		48	#define PERL_VERSION_ATLEAST(a,b,c) \
		49	(PERL_REVISION > (a) \
		50	\|\| (PERL_REVISION == (a) \
		51	&& (PERL_VERSION > (b) \
		52	\|\| (PERL_VERSION == (b) && PERLSUBVERSION >= (c)))))
		53
		54	#if !PERL_VERSION_ATLEAST (5,6,0)
		55	# ifndef PL_ppaddr
		56	# define PL_ppaddr ppaddr
		57	# endif
		58	# ifndef call_sv
		59	# define call_sv perl_call_sv
		60	# endif
		61	# ifndef get_sv
		62	# define get_sv perl_get_sv
		63	# endif
		64	# ifndef get_cv
		65	# define get_cv perl_get_cv
		66	# endif
		67	# ifndef IS_PADGV
		68	# define IS_PADGV(v) 0
		69	# endif
		70	# ifndef IS_PADCONST
		71	# define IS_PADCONST(v) 0
		72	# endif
		73	#endif
		74
		75	/* 5.8.7 */
		76	#ifndef SvRV_set
		77	# define SvRV_set(s,v) SvRV(s) = (v)
		78	#endif
		79
		80	#if !__i386 && !__x86_64 && !__powerpc && !__m68k && !__alpha && !__mips && !__sparc64
		81	# undef CORO_STACKGUARD
		82	#endif
		83
		84	#ifndef CORO_STACKGUARD
		85	# define CORO_STACKGUARD 0
		86	#endif
		87
		88	/* prefer perl internal functions over our own? */
		89	#ifndef CORO_PREFER_PERL_FUNCTIONS
		90	# define CORO_PREFER_PERL_FUNCTIONS 0
		91	#endif
		92
		93	/* The next macros try to return the current stack pointer, in an as
		94	* portable way as possible. */
77	#define dSTACKLEVEL int stacklevel	95	#define dSTACKLEVEL volatile char stacklevel
78	#define STACKLEVEL ((void *)&stacklevel)	96	#define STACKLEVEL ((void *)&stacklevel)
79		97
80	#define IN_DESTRUCT (PL_main_cv == Nullcv)	98	#define IN_DESTRUCT (PL_main_cv == Nullcv)
81		99
82	#if __GNUC__ >= 3	100	#if __GNUC__ >= 3
83	# define attribute(x) __attribute__(x)	101	# define attribute(x) __attribute__(x)
		102	# define BARRIER __asm__ __volatile__ ("" : : : "memory")
84	#else	103	#else
85	# define attribute(x)	104	# define attribute(x)
		105	# define BARRIER
86	#endif	106	#endif
87		107
88	#define NOINLINE attribute ((noinline))	108	#define NOINLINE attribute ((noinline))
89		109
90	#include "CoroAPI.h"	110	#include "CoroAPI.h"
91
92	#define TRANSFER_SET_STACKLEVEL 0x8bfbfbfb /* magic cookie */
93		111
94	#ifdef USE_ITHREADS	112	#ifdef USE_ITHREADS
95	static perl_mutex coro_mutex;	113	static perl_mutex coro_mutex;
96	# define LOCK do { MUTEX_LOCK (&coro_mutex); } while (0)	114	# define LOCK do { MUTEX_LOCK (&coro_mutex); } while (0)
97	# define UNLOCK do { MUTEX_UNLOCK (&coro_mutex); } while (0)	115	# define UNLOCK do { MUTEX_UNLOCK (&coro_mutex); } while (0)
98	#else	116	#else
99	# define LOCK (void)0	117	# define LOCK (void)0
100	# define UNLOCK (void)0	118	# define UNLOCK (void)0
101	#endif	119	#endif
102		120
		121	/* helper storage struct for Coro::AIO */
		122	struct io_state
		123	{
		124	int errorno;
		125	I32 laststype;
		126	int laststatval;
		127	Stat_t statcache;
		128	};
		129
		130	static size_t coro_stacksize = CORO_STACKSIZE;
103	static struct CoroAPI coroapi;	131	static struct CoroAPI coroapi;
104	static AV main_mainstack; / used to differentiate between $main and others */	132	static AV main_mainstack; / used to differentiate between $main and others */
		133	static JMPENV *main_top_env;
105	static HV coro_state_stash, coro_stash;	134	static HV coro_state_stash, coro_stash;
106	static SV coro_mortal; / will be freed after next transfer */	135	static SV coro_mortal; / will be freed after next transfer */
107		136
		137	static GV irsgv; / $/ */
		138
		139	/* async_pool helper stuff */
		140	static SV *sv_pool_rss;
		141	static SV *sv_pool_size;
		142	static AV *av_async_pool;
		143
108	static struct coro_cctx *cctx_first;	144	static struct coro_cctx *cctx_first;
109	static int cctx_count, cctx_idle;	145	static int cctx_count, cctx_idle;
		146
		147	enum {
		148	CC_MAPPED = 0x01,
		149	CC_NOREUSE = 0x02, /* throw this away after tracing */
		150	CC_TRACE = 0x04,
		151	CC_TRACE_SUB = 0x08, /* trace sub calls */
		152	CC_TRACE_LINE = 0x10, /* trace each statement */
		153	CC_TRACE_ALL = CC_TRACE_SUB \| CC_TRACE_LINE,
		154	};
110		155
111	/* this is a structure representing a c-level coroutine */	156	/* this is a structure representing a c-level coroutine */
112	typedef struct coro_cctx {	157	typedef struct coro_cctx {
113	struct coro_cctx *next;	158	struct coro_cctx *next;
114		159
115	/* the stack */	160	/* the stack */
116	void *sptr;	161	void *sptr;
117	long ssize; /* positive == mmap, otherwise malloc */	162	size_t ssize;
118		163
119	/* cpu state */	164	/* cpu state */
120	void idle_sp; / sp of top-level transfer/schedule/cede call */	165	void idle_sp; / sp of top-level transfer/schedule/cede call */
		166	JMPENV idle_te; / same as idle_sp, but for top_env, TODO: remove once stable */
121	JMPENV *top_env;	167	JMPENV *top_env;
122	coro_context cctx;	168	coro_context cctx;
123		169
124	#if USE_VALGRIND	170	#if CORO_USE_VALGRIND
125	int valgrind_id;	171	int valgrind_id;
126	#endif	172	#endif
		173	unsigned char flags;
127	} coro_cctx;	174	} coro_cctx;
		175
		176	enum {
		177	CF_RUNNING = 0x0001, /* coroutine is running */
		178	CF_READY = 0x0002, /* coroutine is ready */
		179	CF_NEW = 0x0004, /* has never been switched to */
		180	CF_DESTROYED = 0x0008, /* coroutine data has been freed */
		181	};
128		182
129	/* this is a structure representing a perl-level coroutine */	183	/* this is a structure representing a perl-level coroutine */
130	struct coro {	184	struct coro {
131	/* the c coroutine allocated to this perl coroutine, if any */	185	/* the c coroutine allocated to this perl coroutine, if any */
132	coro_cctx *cctx;	186	coro_cctx *cctx;
133		187
134	/* data associated with this coroutine (initial args) */	188	/* data associated with this coroutine (initial args) */
135	AV *args;	189	AV *args;
136	int refcnt;	190	int refcnt;
		191	int flags; /* CF_ flags */
137		192
138	/* optionally saved, might be zero */	193	/* optionally saved, might be zero */
139	AV *defav;	194	AV defav; / @_ */
140	SV *defsv;	195	SV defsv; / $_ */
141	SV *errsv;	196	SV errsv; / $@ */
		197	SV deffh; / default filehandle */
		198	SV irssv; / $/ */
		199	SV irssv_sv; / real $/ cache */
142		200
143	#define VAR(name,type) type name;	201	#define VAR(name,type) type name;
144	# include "state.h"	202	# include "state.h"
145	#undef VAR	203	#undef VAR
146		204
		205	/* statistics */
		206	int usecount; /* number of transfers to this coro */
		207
147	/* coro process data */	208	/* coro process data */
148	int prio;	209	int prio;
		210	//SV *throw;
		211
		212	/* async_pool */
		213	SV *saved_deffh;
		214
		215	/* linked list */
		216	struct coro next, prev;
		217	HV hv; / the perl hash associated with this coro, if any */
149	};	218	};
150		219
151	typedef struct coro *Coro__State;	220	typedef struct coro *Coro__State;
152	typedef struct coro *Coro__State_or_hashref;	221	typedef struct coro *Coro__State_or_hashref;
153		222
		223	/ Coro ******************************************************************/
		224
		225	#define PRIO_MAX 3
		226	#define PRIO_HIGH 1
		227	#define PRIO_NORMAL 0
		228	#define PRIO_LOW -1
		229	#define PRIO_IDLE -3
		230	#define PRIO_MIN -4
		231
		232	/* for Coro.pm */
		233	static SV *coro_current;
		234	static AV *coro_ready [PRIO_MAX-PRIO_MIN+1];
		235	static int coro_nready;
		236	static struct coro *coro_first;
		237
		238	/ lowlevel stuff ********************************************************/
		239
154	static AV *	240	static AV *
155	coro_clone_padlist (CV *cv)	241	coro_clone_padlist (pTHX_ CV *cv)
156	{	242	{
157	AV *padlist = CvPADLIST (cv);	243	AV *padlist = CvPADLIST (cv);
158	AV newpadlist, newpad;	244	AV newpadlist, newpad;
159		245
160	newpadlist = newAV ();	246	newpadlist = newAV ();
…		…
172		258
173	return newpadlist;	259	return newpadlist;
174	}	260	}
175		261
176	static void	262	static void
177	free_padlist (AV *padlist)	263	free_padlist (pTHX_ AV *padlist)
178	{	264	{
179	/* may be during global destruction */	265	/* may be during global destruction */
180	if (SvREFCNT (padlist))	266	if (SvREFCNT (padlist))
181	{	267	{
182	I32 i = AvFILLp (padlist);	268	I32 i = AvFILLp (padlist);
…		…
203	AV *padlist;	289	AV *padlist;
204	AV av = (AV )mg->mg_obj;	290	AV av = (AV )mg->mg_obj;
205		291
206	/* casting is fun. */	292	/* casting is fun. */
207	while (&PL_sv_undef != (SV )(padlist = (AV )av_pop (av)))	293	while (&PL_sv_undef != (SV )(padlist = (AV )av_pop (av)))
208	free_padlist (padlist);	294	free_padlist (aTHX_ padlist);
209		295
210	SvREFCNT_dec (av);	296	SvREFCNT_dec (av);
211		297
212	return 0;	298	return 0;
213	}	299	}
…		…
221	? SvMAGIC (cv)->mg_type == PERL_MAGIC_coro \	307	? SvMAGIC (cv)->mg_type == PERL_MAGIC_coro \
222	? SvMAGIC (cv) \	308	? SvMAGIC (cv) \
223	: mg_find ((SV *)cv, PERL_MAGIC_coro) \	309	: mg_find ((SV *)cv, PERL_MAGIC_coro) \
224	: 0	310	: 0
225		311
		312	static struct coro *
		313	SvSTATE_ (pTHX_ SV *coro)
		314	{
		315	HV *stash;
		316	MAGIC *mg;
		317
		318	if (SvROK (coro))
		319	coro = SvRV (coro);
		320
		321	if (SvTYPE (coro) != SVt_PVHV)
		322	croak ("Coro::State object required");
		323
		324	stash = SvSTASH (coro);
		325	if (stash != coro_stash && stash != coro_state_stash)
		326	{
		327	/* very slow, but rare, check */
		328	if (!sv_derived_from (sv_2mortal (newRV_inc (coro)), "Coro::State"))
		329	croak ("Coro::State object required");
		330	}
		331
		332	mg = CORO_MAGIC (coro);
		333	return (struct coro *)mg->mg_ptr;
		334	}
		335
		336	#define SvSTATE(sv) SvSTATE_ (aTHX_ (sv))
		337
226	/* the next two functions merely cache the padlists */	338	/* the next two functions merely cache the padlists */
227	static void	339	static void
228	get_padlist (CV *cv)	340	get_padlist (pTHX_ CV *cv)
229	{	341	{
230	MAGIC *mg = CORO_MAGIC (cv);	342	MAGIC *mg = CORO_MAGIC (cv);
231	AV *av;	343	AV *av;
232		344
233	if (mg && AvFILLp ((av = (AV *)mg->mg_obj)) >= 0)	345	if (mg && AvFILLp ((av = (AV *)mg->mg_obj)) >= 0)
234	CvPADLIST (cv) = (AV *)AvARRAY (av)[AvFILLp (av)--];	346	CvPADLIST (cv) = (AV *)AvARRAY (av)[AvFILLp (av)--];
235	else	347	else
236	{	348	{
237	#if 0	349	#if CORO_PREFER_PERL_FUNCTIONS
238	/* this is probably cleaner, but also slower? */	350	/* this is probably cleaner, but also slower? */
239	CV *cp = Perl_cv_clone (cv);	351	CV *cp = Perl_cv_clone (cv);
240	CvPADLIST (cv) = CvPADLIST (cp);	352	CvPADLIST (cv) = CvPADLIST (cp);
241	CvPADLIST (cp) = 0;	353	CvPADLIST (cp) = 0;
242	SvREFCNT_dec (cp);	354	SvREFCNT_dec (cp);
243	#else	355	#else
244	CvPADLIST (cv) = coro_clone_padlist (cv);	356	CvPADLIST (cv) = coro_clone_padlist (aTHX_ cv);
245	#endif	357	#endif
246	}	358	}
247	}	359	}
248		360
249	static void	361	static void
250	put_padlist (CV *cv)	362	put_padlist (pTHX_ CV *cv)
251	{	363	{
252	MAGIC *mg = CORO_MAGIC (cv);	364	MAGIC *mg = CORO_MAGIC (cv);
253	AV *av;	365	AV *av;
254		366
255	if (!mg)	367	if (!mg)
…		…
266	av_extend (av, AvMAX (av) + 1);	378	av_extend (av, AvMAX (av) + 1);
267		379
268	AvARRAY (av)[++AvFILLp (av)] = (SV *)CvPADLIST (cv);	380	AvARRAY (av)[++AvFILLp (av)] = (SV *)CvPADLIST (cv);
269	}	381	}
270		382
271	#define SB do {	383	/ load & save, init *****************************************************/
272	#define SE } while (0)
273		384
274	#define LOAD(state) load_state((state));
275	#define SAVE(state,flags) save_state((state),(flags));
276
277	#define REPLACE_SV(sv,val) SB SvREFCNT_dec(sv); (sv) = (val); (val) = 0; SE
278
279	static void	385	static void
280	load_state(Coro__State c)	386	load_perl (pTHX_ Coro__State c)
281	{	387	{
282	#define VAR(name,type) PL_ ## name = c->name;	388	#define VAR(name,type) PL_ ## name = c->name;
283	# include "state.h"	389	# include "state.h"
284	#undef VAR	390	#undef VAR
285		391
286	if (c->defav) REPLACE_SV (GvAV (PL_defgv), c->defav);	392	GvSV (PL_defgv) = c->defsv;
287	if (c->defsv) REPLACE_SV (DEFSV , c->defsv);	393	GvAV (PL_defgv) = c->defav;
288	if (c->errsv) REPLACE_SV (ERRSV , c->errsv);	394	GvSV (PL_errgv) = c->errsv;
		395	GvSV (irsgv) = c->irssv_sv;
289		396
290	{	397	{
291	dSP;	398	dSP;
292	CV *cv;	399	CV *cv;
293		400
294	/* now do the ugly restore mess */	401	/* now do the ugly restore mess */
295	while ((cv = (CV *)POPs))	402	while ((cv = (CV *)POPs))
296	{	403	{
297	put_padlist (cv); /* mark this padlist as available */	404	put_padlist (aTHX_ cv); /* mark this padlist as available */
298	CvDEPTH (cv) = PTR2IV (POPs);	405	CvDEPTH (cv) = PTR2IV (POPs);
299	CvPADLIST (cv) = (AV *)POPs;	406	CvPADLIST (cv) = (AV *)POPs;
300	}	407	}
301		408
302	PUTBACK;	409	PUTBACK;
303	}	410	}
304	}	411	}
305		412
306	static void	413	static void
307	save_state(Coro__State c, int flags)	414	save_perl (pTHX_ Coro__State c)
308	{	415	{
309	{	416	{
310	dSP;	417	dSP;
311	I32 cxix = cxstack_ix;	418	I32 cxix = cxstack_ix;
312	PERL_CONTEXT *ccstk = cxstack;	419	PERL_CONTEXT *ccstk = cxstack;
…		…
315	/*	422	/*
316	* the worst thing you can imagine happens first - we have to save	423	* the worst thing you can imagine happens first - we have to save
317	* (and reinitialize) all cv's in the whole callchain :(	424	* (and reinitialize) all cv's in the whole callchain :(
318	*/	425	*/
319		426
320	PUSHs (Nullsv);	427	XPUSHs (Nullsv);
321	/* this loop was inspired by pp_caller */	428	/* this loop was inspired by pp_caller */
322	for (;;)	429	for (;;)
323	{	430	{
324	while (cxix >= 0)	431	while (cxix >= 0)
325	{	432	{
326	PERL_CONTEXT *cx = &ccstk[cxix--];	433	PERL_CONTEXT *cx = &ccstk[cxix--];
327		434
328	if (CxTYPE(cx) == CXt_SUB)	435	if (CxTYPE (cx) == CXt_SUB \|\| CxTYPE (cx) == CXt_FORMAT)
329	{	436	{
330	CV *cv = cx->blk_sub.cv;	437	CV *cv = cx->blk_sub.cv;
331		438
332	if (CvDEPTH (cv))	439	if (CvDEPTH (cv))
333	{	440	{
334	EXTEND (SP, 3);	441	EXTEND (SP, 3);
335
336	PUSHs ((SV *)CvPADLIST(cv));	442	PUSHs ((SV *)CvPADLIST (cv));
337	PUSHs (INT2PTR (SV *, CvDEPTH (cv)));	443	PUSHs (INT2PTR (SV *, CvDEPTH (cv)));
338	PUSHs ((SV *)cv);	444	PUSHs ((SV *)cv);
339		445
340	CvDEPTH (cv) = 0;	446	CvDEPTH (cv) = 0;
341	get_padlist (cv);	447	get_padlist (aTHX_ cv);
342	}	448	}
343	}	449	}
344	#ifdef CXt_FORMAT
345	else if (CxTYPE(cx) == CXt_FORMAT)
346	{
347	/* I never used formats, so how should I know how these are implemented? */
348	/* my bold guess is as a simple, plain sub... */
349	croak ("CXt_FORMAT not yet handled. Don't switch coroutines from within formats");
350	}
351	#endif
352	}	450	}
353		451
354	if (top_si->si_type == PERLSI_MAIN)	452	if (top_si->si_type == PERLSI_MAIN)
355	break;	453	break;
356		454
357	top_si = top_si->si_prev;	455	top_si = top_si->si_prev;
358	ccstk = top_si->si_cxstack;	456	ccstk = top_si->si_cxstack;
359	cxix = top_si->si_cxix;	457	cxix = top_si->si_cxix;
360	}	458	}
361		459
362	PUTBACK;	460	PUTBACK;
363	}	461	}
364		462
365	c->defav = flags & TRANSFER_SAVE_DEFAV ? (AV *)SvREFCNT_inc (GvAV (PL_defgv)) : 0;	463	c->defav = GvAV (PL_defgv);
366	c->defsv = flags & TRANSFER_SAVE_DEFSV ? SvREFCNT_inc (DEFSV) : 0;	464	c->defsv = DEFSV;
367	c->errsv = flags & TRANSFER_SAVE_ERRSV ? SvREFCNT_inc (ERRSV) : 0;	465	c->errsv = ERRSV;
		466	c->irssv_sv = GvSV (irsgv);
368		467
369	#define VAR(name,type)c->name = PL_ ## name;	468	#define VAR(name,type)c->name = PL_ ## name;
370	# include "state.h"	469	# include "state.h"
371	#undef VAR	470	#undef VAR
372	}	471	}
…		…
375	* allocate various perl stacks. This is an exact copy	474	* allocate various perl stacks. This is an exact copy
376	* of perl.c:init_stacks, except that it uses less memory	475	* of perl.c:init_stacks, except that it uses less memory
377	* on the (sometimes correct) assumption that coroutines do	476	* on the (sometimes correct) assumption that coroutines do
378	* not usually need a lot of stackspace.	477	* not usually need a lot of stackspace.
379	*/	478	*/
		479	#if CORO_PREFER_PERL_FUNCTIONS
		480	# define coro_init_stacks init_stacks
		481	#else
380	static void	482	static void
381	coro_init_stacks ()	483	coro_init_stacks (pTHX)
382	{	484	{
383	PL_curstackinfo = new_stackinfo(96, 1024/sizeof(PERL_CONTEXT) - 1);	485	PL_curstackinfo = new_stackinfo(64, 6);
384	PL_curstackinfo->si_type = PERLSI_MAIN;	486	PL_curstackinfo->si_type = PERLSI_MAIN;
385	PL_curstack = PL_curstackinfo->si_stack;	487	PL_curstack = PL_curstackinfo->si_stack;
386	PL_mainstack = PL_curstack; /* remember in case we switch stacks */	488	PL_mainstack = PL_curstack; /* remember in case we switch stacks */
387		489
388	PL_stack_base = AvARRAY(PL_curstack);	490	PL_stack_base = AvARRAY(PL_curstack);
389	PL_stack_sp = PL_stack_base;	491	PL_stack_sp = PL_stack_base;
390	PL_stack_max = PL_stack_base + AvMAX(PL_curstack);	492	PL_stack_max = PL_stack_base + AvMAX(PL_curstack);
391		493
392	New(50,PL_tmps_stack,96,SV*);	494	New(50,PL_tmps_stack,64,SV*);
393	PL_tmps_floor = -1;	495	PL_tmps_floor = -1;
394	PL_tmps_ix = -1;	496	PL_tmps_ix = -1;
395	PL_tmps_max = 96;	497	PL_tmps_max = 64;
396		498
397	New(54,PL_markstack,16,I32);	499	New(54,PL_markstack,16,I32);
398	PL_markstack_ptr = PL_markstack;	500	PL_markstack_ptr = PL_markstack;
399	PL_markstack_max = PL_markstack + 16;	501	PL_markstack_max = PL_markstack + 16;
400		502
…		…
404		506
405	New(54,PL_scopestack,16,I32);	507	New(54,PL_scopestack,16,I32);
406	PL_scopestack_ix = 0;	508	PL_scopestack_ix = 0;
407	PL_scopestack_max = 16;	509	PL_scopestack_max = 16;
408		510
409	New(54,PL_savestack,96,ANY);	511	New(54,PL_savestack,64,ANY);
410	PL_savestack_ix = 0;	512	PL_savestack_ix = 0;
411	PL_savestack_max = 96;	513	PL_savestack_max = 64;
412		514
413	#if !PERL_VERSION_ATLEAST (5,9,0)	515	#if !PERL_VERSION_ATLEAST (5,9,0)
414	New(54,PL_retstack,8,OP*);	516	New(54,PL_retstack,4,OP*);
415	PL_retstack_ix = 0;	517	PL_retstack_ix = 0;
416	PL_retstack_max = 8;	518	PL_retstack_max = 4;
417	#endif	519	#endif
418	}	520	}
		521	#endif
419		522
420	/*	523	/*
421	* destroy the stacks, the callchain etc...	524	* destroy the stacks, the callchain etc...
422	*/	525	*/
423	static void	526	static void
424	coro_destroy_stacks ()	527	coro_destroy_stacks (pTHX)
425	{	528	{
426	if (!IN_DESTRUCT)
427	{
428	/* is this ugly, I ask? */
429	LEAVE_SCOPE (0);
430
431	/* sure it is, but more important: is it correct?? :/ */
432	FREETMPS;
433
434	/POPSTACK_TO (PL_mainstack);//D//use/
435	}
436
437	while (PL_curstackinfo->si_next)	529	while (PL_curstackinfo->si_next)
438	PL_curstackinfo = PL_curstackinfo->si_next;	530	PL_curstackinfo = PL_curstackinfo->si_next;
439		531
440	while (PL_curstackinfo)	532	while (PL_curstackinfo)
441	{	533	{
442	PERL_SI *p = PL_curstackinfo->si_prev;	534	PERL_SI *p = PL_curstackinfo->si_prev;
443		535
444	{ /D//remove/
445	dSP;
446	SWITCHSTACK (PL_curstack, PL_curstackinfo->si_stack);
447	PUTBACK; /* possibly superfluous */
448	}
449
450	if (!IN_DESTRUCT)	536	if (!IN_DESTRUCT)
451	{
452	dounwind (-1);/D//remove/
453	SvREFCNT_dec (PL_curstackinfo->si_stack);	537	SvREFCNT_dec (PL_curstackinfo->si_stack);
454	}
455		538
456	Safefree (PL_curstackinfo->si_cxstack);	539	Safefree (PL_curstackinfo->si_cxstack);
457	Safefree (PL_curstackinfo);	540	Safefree (PL_curstackinfo);
458	PL_curstackinfo = p;	541	PL_curstackinfo = p;
459	}	542	}
…		…
465	#if !PERL_VERSION_ATLEAST (5,9,0)	548	#if !PERL_VERSION_ATLEAST (5,9,0)
466	Safefree (PL_retstack);	549	Safefree (PL_retstack);
467	#endif	550	#endif
468	}	551	}
469		552
470	static void	553	static size_t
471	setup_coro (struct coro *coro)	554	coro_rss (pTHX_ struct coro *coro)
		555	{
		556	size_t rss = sizeof (*coro);
		557
		558	if (coro->mainstack)
		559	{
		560	if (coro->flags & CF_RUNNING)
		561	{
		562	#define VAR(name,type)coro->name = PL_ ## name;
		563	# include "state.h"
		564	#undef VAR
		565	}
		566
		567	rss += sizeof (coro->curstackinfo);
		568	rss += sizeof (SV) + sizeof (struct xpvav) + (1 + AvFILL (coro->curstackinfo->si_stack)) * sizeof (SV *);
		569	rss += (coro->curstackinfo->si_cxmax + 1) * sizeof (PERL_CONTEXT);
		570	rss += sizeof (SV) + sizeof (struct xpvav) + (1 + AvFILL (coro->curstack)) * sizeof (SV *);
		571	rss += coro->tmps_max * sizeof (SV *);
		572	rss += (coro->markstack_max - coro->markstack_ptr) * sizeof (I32);
		573	rss += coro->scopestack_max * sizeof (I32);
		574	rss += coro->savestack_max * sizeof (ANY);
		575
		576	#if !PERL_VERSION_ATLEAST (5,9,0)
		577	rss += coro->retstack_max * sizeof (OP *);
		578	#endif
		579	}
		580
		581	return rss;
		582	}
		583
		584	/ coroutine stack handling **********************************************/
		585
		586	static void
		587	coro_setup (pTHX_ struct coro *coro)
472	{	588	{
473	/*	589	/*
474	* emulate part of the perl startup here.	590	* emulate part of the perl startup here.
475	*/	591	*/
476
477	coro_init_stacks ();	592	coro_init_stacks (aTHX);
478		593
		594	PL_runops = RUNOPS_DEFAULT;
		595	PL_curcop = &PL_compiling;
		596	PL_in_eval = EVAL_NULL;
479	PL_curcop = 0;	597	PL_comppad = 0;
480	PL_in_eval = 0;
481	PL_curpm = 0;	598	PL_curpm = 0;
		599	PL_localizing = 0;
		600	PL_dirty = 0;
		601	PL_restartop = 0;
		602
		603	GvSV (PL_defgv) = NEWSV (0, 0);
		604	GvAV (PL_defgv) = coro->args; coro->args = 0;
		605	GvSV (PL_errgv) = NEWSV (0, 0);
		606	GvSV (irsgv) = newSVpvn ("\n", 1); sv_magic (GvSV (irsgv), (SV *)irsgv, PERL_MAGIC_sv, "/", 0);
		607	PL_rs = newSVsv (GvSV (irsgv));
		608
		609	{
		610	IO *io = newIO ();
		611	PL_defoutgv = (GV *)NEWSV (0, 0);
		612	gv_init (PL_defoutgv, coro_state_stash, "stdout", sizeof ("stdout") - 1, 0);
		613	IoTYPE (io) = IoTYPE_WRONLY;
		614	IoOFP (io) = IoIFP (io) = PerlIO_stdout ();
		615	IoFLAGS (io) \|= IOf_FLUSH;
		616	GvIOp (PL_defoutgv) = io;
		617	}
482		618
483	{	619	{
484	dSP;	620	dSP;
485	LOGOP myop;	621	LOGOP myop;
486		622
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);	623	Zero (&myop, 1, LOGOP);
494	myop.op_next = Nullop;	624	myop.op_next = Nullop;
495	myop.op_flags = OPf_WANT_VOID;	625	myop.op_flags = OPf_WANT_VOID;
496		626
		627	PUSHMARK (SP);
		628	XPUSHs (av_shift (GvAV (PL_defgv)));
		629	PUTBACK;
497	PL_op = (OP *)&myop;	630	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);	631	PL_op = PL_ppaddr[OP_ENTERSUB](aTHX);
503	SPAGAIN;	632	SPAGAIN;
504
505	ENTER; /* necessary e.g. for dounwind */
506	}	633	}
507	}
508		634
		635	ENTER; /* necessary e.g. for dounwind */
		636	}
		637
509	static void	638	static void
		639	coro_destroy (pTHX_ struct coro *coro)
		640	{
		641	if (!IN_DESTRUCT)
		642	{
		643	/* restore all saved variables and stuff */
		644	LEAVE_SCOPE (0);
		645	assert (PL_tmps_floor == -1);
		646
		647	/* free all temporaries */
		648	FREETMPS;
		649	assert (PL_tmps_ix == -1);
		650
		651	/* unwind all extra stacks */
		652	POPSTACK_TO (PL_mainstack);
		653
		654	/* unwind main stack */
		655	dounwind (-1);
		656	}
		657
		658	SvREFCNT_dec (GvSV (PL_defgv));
		659	SvREFCNT_dec (GvAV (PL_defgv));
		660	SvREFCNT_dec (GvSV (PL_errgv));
		661	SvREFCNT_dec (PL_defoutgv);
		662	SvREFCNT_dec (PL_rs);
		663	SvREFCNT_dec (GvSV (irsgv));
		664
		665	SvREFCNT_dec (coro->saved_deffh);
		666	//SvREFCNT_dec (coro->throw);
		667
		668	coro_destroy_stacks (aTHX);
		669	}
		670
		671	static void
510	free_coro_mortal ()	672	free_coro_mortal (pTHX)
511	{	673	{
512	if (coro_mortal)	674	if (coro_mortal)
513	{	675	{
514	SvREFCNT_dec (coro_mortal);	676	SvREFCNT_dec (coro_mortal);
515	coro_mortal = 0;	677	coro_mortal = 0;
516	}	678	}
517	}	679	}
518		680
		681	static int
		682	runops_trace (pTHX)
		683	{
		684	COP *oldcop = 0;
		685	int oldcxix = -2;
		686	struct coro coro = SvSTATE (coro_current); / trace cctx is tied to specific coro */
		687	coro_cctx *cctx = coro->cctx;
		688
		689	while ((PL_op = CALL_FPTR (PL_op->op_ppaddr) (aTHX)))
		690	{
		691	PERL_ASYNC_CHECK ();
		692
		693	if (cctx->flags & CC_TRACE_ALL)
		694	{
		695	if (PL_op->op_type == OP_LEAVESUB && cctx->flags & CC_TRACE_SUB)
		696	{
		697	PERL_CONTEXT *cx = &cxstack[cxstack_ix];
		698	SV bot, top;
		699	AV av = newAV (); / return values */
		700	SV **cb;
		701	dSP;
		702
		703	GV *gv = CvGV (cx->blk_sub.cv);
		704	SV *fullname = sv_2mortal (newSV (0));
		705	if (isGV (gv))
		706	gv_efullname3 (fullname, gv, 0);
		707
		708	bot = PL_stack_base + cx->blk_oldsp + 1;
		709	top = cx->blk_gimme == G_ARRAY ? SP + 1
		710	: cx->blk_gimme == G_SCALAR ? bot + 1
		711	: bot;
		712
		713	while (bot < top)
		714	av_push (av, SvREFCNT_inc (*bot++));
		715
		716	PL_runops = RUNOPS_DEFAULT;
		717	ENTER;
		718	SAVETMPS;
		719	EXTEND (SP, 3);
		720	PUSHMARK (SP);
		721	PUSHs (&PL_sv_no);
		722	PUSHs (fullname);
		723	PUSHs (sv_2mortal (newRV_noinc ((SV *)av)));
		724	PUTBACK;
		725	cb = hv_fetch ((HV *)SvRV (coro_current), "_trace_sub_cb", sizeof ("_trace_sub_cb") - 1, 0);
		726	if (cb) call_sv (*cb, G_KEEPERR \| G_EVAL \| G_VOID \| G_DISCARD);
		727	SPAGAIN;
		728	FREETMPS;
		729	LEAVE;
		730	PL_runops = runops_trace;
		731	}
		732
		733	if (oldcop != PL_curcop)
		734	{
		735	oldcop = PL_curcop;
		736
		737	if (PL_curcop != &PL_compiling)
		738	{
		739	SV **cb;
		740
		741	if (oldcxix != cxstack_ix && cctx->flags & CC_TRACE_SUB)
		742	{
		743	PERL_CONTEXT *cx = &cxstack[cxstack_ix];
		744
		745	if (CxTYPE (cx) == CXt_SUB && oldcxix < cxstack_ix)
		746	{
		747	runops_proc_t old_runops = PL_runops;
		748	dSP;
		749	GV *gv = CvGV (cx->blk_sub.cv);
		750	SV *fullname = sv_2mortal (newSV (0));
		751
		752	if (isGV (gv))
		753	gv_efullname3 (fullname, gv, 0);
		754
		755	PL_runops = RUNOPS_DEFAULT;
		756	ENTER;
		757	SAVETMPS;
		758	EXTEND (SP, 3);
		759	PUSHMARK (SP);
		760	PUSHs (&PL_sv_yes);
		761	PUSHs (fullname);
		762	PUSHs (cx->blk_sub.hasargs ? sv_2mortal (newRV_inc ((SV *)cx->blk_sub.argarray)) : &PL_sv_undef);
		763	PUTBACK;
		764	cb = hv_fetch ((HV *)SvRV (coro_current), "_trace_sub_cb", sizeof ("_trace_sub_cb") - 1, 0);
		765	if (cb) call_sv (*cb, G_KEEPERR \| G_EVAL \| G_VOID \| G_DISCARD);
		766	SPAGAIN;
		767	FREETMPS;
		768	LEAVE;
		769	PL_runops = runops_trace;
		770	}
		771
		772	oldcxix = cxstack_ix;
		773	}
		774
		775	if (cctx->flags & CC_TRACE_LINE)
		776	{
		777	dSP;
		778
		779	PL_runops = RUNOPS_DEFAULT;
		780	ENTER;
		781	SAVETMPS;
		782	EXTEND (SP, 3);
		783	PL_runops = RUNOPS_DEFAULT;
		784	PUSHMARK (SP);
		785	PUSHs (sv_2mortal (newSVpv (OutCopFILE (oldcop), 0)));
		786	PUSHs (sv_2mortal (newSViv (CopLINE (oldcop))));
		787	PUTBACK;
		788	cb = hv_fetch ((HV *)SvRV (coro_current), "_trace_line_cb", sizeof ("_trace_line_cb") - 1, 0);
		789	if (cb) call_sv (*cb, G_KEEPERR \| G_EVAL \| G_VOID \| G_DISCARD);
		790	SPAGAIN;
		791	FREETMPS;
		792	LEAVE;
		793	PL_runops = runops_trace;
		794	}
		795	}
		796	}
		797	}
		798	}
		799
		800	TAINT_NOT;
		801	return 0;
		802	}
		803
		804	/* inject a fake call to Coro::State::_cctx_init into the execution */
		805	/* _cctx_init should be careful, as it could be called at almost any time */
		806	/* during execution of a perl program */
519	static void NOINLINE	807	static void NOINLINE
520	prepare_cctx (coro_cctx *cctx)	808	prepare_cctx (pTHX_ coro_cctx *cctx)
521	{	809	{
522	dSP;	810	dSP;
523	LOGOP myop;	811	LOGOP myop;
524		812
		813	PL_top_env = &PL_start_env;
		814
		815	if (cctx->flags & CC_TRACE)
		816	PL_runops = runops_trace;
		817
525	Zero (&myop, 1, LOGOP);	818	Zero (&myop, 1, LOGOP);
526	myop.op_next = PL_op;	819	myop.op_next = PL_op;
527	myop.op_flags = OPf_WANT_VOID;	820	myop.op_flags = OPf_WANT_VOID \| OPf_STACKED;
528
529	sv_setiv (get_sv ("Coro::State::_cctx", FALSE), PTR2IV (cctx));
530		821
531	PUSHMARK (SP);	822	PUSHMARK (SP);
		823	EXTEND (SP, 2);
		824	PUSHs (sv_2mortal (newSViv (PTR2IV (cctx))));
532	XPUSHs ((SV *)get_cv ("Coro::State::_cctx_init", FALSE));	825	PUSHs ((SV *)get_cv ("Coro::State::_cctx_init", FALSE));
533	PUTBACK;	826	PUTBACK;
		827	PL_op = (OP *)&myop;
534	PL_restartop = PL_ppaddr[OP_ENTERSUB](aTHX);	828	PL_op = PL_ppaddr[OP_ENTERSUB](aTHX);
535	SPAGAIN;	829	SPAGAIN;
536	}	830	}
537		831
		832	/*
		833	* this is a _very_ stripped down perl interpreter ;)
		834	*/
538	static void	835	static void
539	coro_run (void *arg)	836	coro_run (void *arg)
540	{	837	{
		838	dTHX;
		839
541	/* coro_run is the alternative epilogue of transfer() */	840	/* coro_run is the alternative tail of transfer(), so unlock here. */
542	UNLOCK;	841	UNLOCK;
543		842
		843	/* we now skip the entersub that lead to transfer() */
		844	PL_op = PL_op->op_next;
		845
		846	/* inject a fake subroutine call to cctx_init */
		847	prepare_cctx (aTHX_ (coro_cctx *)arg);
		848
		849	/* somebody or something will hit me for both perl_run and PL_restartop */
		850	PL_restartop = PL_op;
		851	perl_run (PL_curinterp);
		852
544	/*	853	/*
545	* this is a _very_ stripped down perl interpreter ;)	854	* If perl-run returns we assume exit() was being called or the coro
		855	* fell off the end, which seems to be the only valid (non-bug)
		856	* reason for perl_run to return. We try to exit by jumping to the
		857	* bootstrap-time "top" top_env, as we cannot restore the "main"
		858	* coroutine as Coro has no such concept
546	*/	859	*/
547	PL_top_env = &PL_start_env;	860	PL_top_env = main_top_env;
548		861	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	}	862	}
558		863
559	static coro_cctx *	864	static coro_cctx *
560	cctx_new ()	865	cctx_new ()
561	{	866	{
562	coro_cctx *cctx;	867	coro_cctx *cctx;
		868	void *stack_start;
		869	size_t stack_size;
563		870
564	++cctx_count;	871	++cctx_count;
565		872
566	New (0, cctx, 1, coro_cctx);	873	Newz (0, cctx, 1, coro_cctx);
567		874
568	#if HAVE_MMAP	875	#if HAVE_MMAP
569		876
570	cctx->ssize = ((STACKSIZE * sizeof (long) + PAGESIZE - 1) / PAGESIZE + STACKGUARD) * PAGESIZE;	877	cctx->ssize = ((coro_stacksize * sizeof (long) + PAGESIZE - 1) / PAGESIZE + CORO_STACKGUARD) * PAGESIZE;
571	/* mmap suppsedly does allocate-on-write for us */	878	/* 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);	879	cctx->sptr = mmap (0, cctx->ssize, PROT_EXEC\|PROT_READ\|PROT_WRITE, MAP_PRIVATE\|MAP_ANONYMOUS, 0, 0);
573		880
574	if (cctx->sptr == (void *)-1)	881	if (cctx->sptr != (void *)-1)
575	{
576	perror ("FATAL: unable to mmap stack for coroutine");
577	_exit (EXIT_FAILURE);
578	}	882	{
579
580	# if STACKGUARD	883	# if CORO_STACKGUARD
581	mprotect (cctx->sptr, STACKGUARD * PAGESIZE, PROT_NONE);	884	mprotect (cctx->sptr, CORO_STACKGUARD * PAGESIZE, PROT_NONE);
582	# endif	885	# endif
		886	stack_start = CORO_STACKGUARD * PAGESIZE + (char *)cctx->sptr;
		887	stack_size = cctx->ssize - CORO_STACKGUARD * PAGESIZE;
		888	cctx->flags \|= CC_MAPPED;
		889	}
		890	else
		891	#endif
		892	{
		893	cctx->ssize = coro_stacksize * (long)sizeof (long);
		894	New (0, cctx->sptr, coro_stacksize, long);
583		895
584	#else
585
586	cctx->ssize = STACKSIZE * (long)sizeof (long);
587	New (0, cctx->sptr, STACKSIZE, long);
588
589	if (!cctx->sptr)	896	if (!cctx->sptr)
590	{	897	{
591	perror ("FATAL: unable to malloc stack for coroutine");	898	perror ("FATAL: unable to allocate stack for coroutine");
592	_exit (EXIT_FAILURE);	899	_exit (EXIT_FAILURE);
593	}	900	}
594		901
595	#endif	902	stack_start = cctx->sptr;
		903	stack_size = cctx->ssize;
		904	}
596		905
597	#if USE_VALGRIND	906	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);	907	coro_create (&cctx->cctx, coro_run, (void *)cctx, stack_start, stack_size);
605		908
606	return cctx;	909	return cctx;
607	}	910	}
608		911
609	static void	912	static void
610	cctx_free (coro_cctx *cctx)	913	cctx_destroy (coro_cctx *cctx)
611	{	914	{
612	if (!cctx)	915	if (!cctx)
613	return;	916	return;
614		917
615	--cctx_count;	918	--cctx_count;
616		919
617	#if USE_VALGRIND	920	#if CORO_USE_VALGRIND
618	VALGRIND_STACK_DEREGISTER (cctx->valgrind_id);	921	VALGRIND_STACK_DEREGISTER (cctx->valgrind_id);
619	#endif	922	#endif
620		923
621	#if HAVE_MMAP	924	#if HAVE_MMAP
		925	if (cctx->flags & CC_MAPPED)
622	munmap (cctx->sptr, cctx->ssize);	926	munmap (cctx->sptr, cctx->ssize);
623	#else	927	else
		928	#endif
624	Safefree (cctx->sptr);	929	Safefree (cctx->sptr);
625	#endif
626		930
627	Safefree (cctx);	931	Safefree (cctx);
628	}	932	}
629		933
630	static coro_cctx *	934	static coro_cctx *
631	cctx_get ()	935	cctx_get (pTHX)
632	{	936	{
633	coro_cctx *cctx;
634
635	if (cctx_first)	937	while (cctx_first)
636	{	938	{
		939	coro_cctx *cctx = cctx_first;
		940	cctx_first = cctx->next;
637	--cctx_idle;	941	--cctx_idle;
638	cctx = cctx_first;	942
639	cctx_first = cctx->next;	943	if (cctx->ssize >= coro_stacksize && !(cctx->flags & CC_NOREUSE))
640	}	944	return cctx;
641	else	945
642	{	946	cctx_destroy (cctx);
643	cctx = cctx_new ();
644	PL_op = PL_op->op_next;
645	}	947	}
646		948
647	return cctx;	949	return cctx_new ();
648	}	950	}
649		951
650	static void	952	static void
651	cctx_put (coro_cctx *cctx)	953	cctx_put (coro_cctx *cctx)
652	{	954	{
		955	/* free another cctx if overlimit */
		956	if (cctx_idle >= MAX_IDLE_CCTX)
		957	{
		958	coro_cctx *first = cctx_first;
		959	cctx_first = first->next;
		960	--cctx_idle;
		961
		962	cctx_destroy (first);
		963	}
		964
653	++cctx_idle;	965	++cctx_idle;
654	cctx->next = cctx_first;	966	cctx->next = cctx_first;
655	cctx_first = cctx;	967	cctx_first = cctx;
656	}	968	}
657		969
658	/* never call directly, always through the coro_state_transfer global variable */	970	/ coroutine switching ***************************************************/
		971
659	static void NOINLINE	972	static void NOINLINE
		973	transfer_check (pTHX_ struct coro prev, struct coro next)
		974	{
		975	if (prev != next)
		976	{
		977	if (!(prev->flags & (CF_RUNNING \| CF_NEW)))
		978	croak ("Coro::State::transfer called with non-running/new prev Coro::State, but can only transfer from running or new states");
		979
		980	if (next->flags & CF_RUNNING)
		981	croak ("Coro::State::transfer called with running next Coro::State, but can only transfer to inactive states");
		982
		983	if (next->flags & CF_DESTROYED)
		984	croak ("Coro::State::transfer called with destroyed next Coro::State, but can only transfer to inactive states");
		985
		986	if (PL_lex_state != LEX_NOTPARSING)
		987	croak ("Coro::State::transfer called while parsing, but this is not supported");
		988	}
		989	}
		990
		991	/* always use the TRANSFER macro */
		992	static void NOINLINE
660	transfer (struct coro prev, struct coro next, int flags)	993	transfer (pTHX_ struct coro prev, struct coro next)
661	{	994	{
662	dSTACKLEVEL;	995	dSTACKLEVEL;
663		996
664	/* sometimes transfer is only called to set idle_sp */	997	/* sometimes transfer is only called to set idle_sp */
665	if (flags == TRANSFER_SET_STACKLEVEL)	998	if (!next)
		999	{
666	((coro_cctx *)prev)->idle_sp = STACKLEVEL;	1000	((coro_cctx *)prev)->idle_sp = STACKLEVEL;
		1001	assert (((coro_cctx )prev)->idle_te = PL_top_env); / just for the side-effect when asserts are enabled */
		1002	}
667	else if (prev != next)	1003	else if (prev != next)
668	{	1004	{
669	coro_cctx *prev__cctx;	1005	coro_cctx *prev__cctx;
670		1006
		1007	if (prev->flags & CF_NEW)
		1008	{
		1009	/* create a new empty context */
		1010	Newz (0, prev->cctx, 1, coro_cctx);
		1011	prev->flags &= ~CF_NEW;
		1012	prev->flags \|= CF_RUNNING;
		1013	}
		1014
		1015	prev->flags &= ~CF_RUNNING;
		1016	next->flags \|= CF_RUNNING;
		1017
671	LOCK;	1018	LOCK;
672		1019
673	if (next->mainstack)	1020	if (next->flags & CF_NEW)
674	{	1021	{
675	/* coroutine already started */	1022	/* need to start coroutine */
676	SAVE (prev, flags);	1023	next->flags &= ~CF_NEW;
677	LOAD (next);	1024	/* first get rid of the old state */
		1025	save_perl (aTHX_ prev);
		1026	/* setup coroutine call */
		1027	coro_setup (aTHX_ next);
678	}	1028	}
679	else	1029	else
680	{	1030	{
681	/* need to start coroutine */	1031	/* coroutine already started */
682	/* first get rid of the old state */	1032	save_perl (aTHX_ prev);
683	SAVE (prev, -1);	1033	load_perl (aTHX_ next);
684	/* setup coroutine call */
685	setup_coro (next);
686	/* need a stack */
687	next->cctx = 0;
688	}	1034	}
689		1035
690	if (!prev->cctx)
691	/* create a new empty context */
692	Newz (0, prev->cctx, 1, coro_cctx);
693
694	prev__cctx = prev->cctx;	1036	prev__cctx = prev->cctx;
695		1037
696	/* possibly "free" the cctx */	1038	/* possibly "free" the cctx */
697	if (prev__cctx->idle_sp == STACKLEVEL)	1039	if (prev__cctx->idle_sp == STACKLEVEL && !(prev__cctx->flags & CC_TRACE))
698	{	1040	{
		1041	/* I assume that STACKLEVEL is a stronger indicator than PL_top_env changes */
		1042	assert (("ERROR: current top_env must equal previous top_env", PL_top_env == prev__cctx->idle_te));
		1043
		1044	prev->cctx = 0;
		1045
699	cctx_put (prev__cctx);	1046	cctx_put (prev__cctx);
700	prev->cctx = 0;
701	}	1047	}
702		1048
		1049	++next->usecount;
		1050
703	if (!next->cctx)	1051	if (!next->cctx)
704	next->cctx = cctx_get ();	1052	next->cctx = cctx_get (aTHX);
705		1053
706	if (prev__cctx != next->cctx)	1054	if (prev__cctx != next->cctx)
707	{	1055	{
708	prev__cctx->top_env = PL_top_env;	1056	prev__cctx->top_env = PL_top_env;
709	PL_top_env = next->cctx->top_env;	1057	PL_top_env = next->cctx->top_env;
710	coro_transfer (&prev__cctx->cctx, &next->cctx->cctx);	1058	coro_transfer (&prev__cctx->cctx, &next->cctx->cctx);
711	}	1059	}
712		1060
713	free_coro_mortal ();	1061	free_coro_mortal (aTHX);
714
715	UNLOCK;	1062	UNLOCK;
716	}	1063	}
717	}	1064	}
718		1065
719	struct transfer_args	1066	struct transfer_args
720	{	1067	{
721	struct coro prev, next;	1068	struct coro prev, next;
722	int flags;
723	};	1069	};
724		1070
725	#define TRANSFER(ta) transfer ((ta).prev, (ta).next, (ta).flags)	1071	#define TRANSFER(ta) transfer (aTHX_ (ta).prev, (ta).next)
		1072	#define TRANSFER_CHECK(ta) transfer_check (aTHX_ (ta).prev, (ta).next)
726		1073
		1074	/ high level stuff ******************************************************/
		1075
727	static void	1076	static int
728	coro_state_destroy (struct coro *coro)	1077	coro_state_destroy (pTHX_ struct coro *coro)
729	{	1078	{
730	if (coro->refcnt--)	1079	if (coro->flags & CF_DESTROYED)
731	return;	1080	return 0;
		1081
		1082	coro->flags \|= CF_DESTROYED;
		1083
		1084	if (coro->flags & CF_READY)
		1085	{
		1086	/* reduce nready, as destroying a ready coro effectively unreadies it */
		1087	/* alternative: look through all ready queues and remove the coro */
		1088	LOCK;
		1089	--coro_nready;
		1090	UNLOCK;
		1091	}
		1092	else
		1093	coro->flags \|= CF_READY; /* make sure it is NOT put into the readyqueue */
732		1094
733	if (coro->mainstack && coro->mainstack != main_mainstack)	1095	if (coro->mainstack && coro->mainstack != main_mainstack)
734	{	1096	{
735	struct coro temp;	1097	struct coro temp;
736		1098
737	SAVE ((&temp), TRANSFER_SAVE_ALL);	1099	if (coro->flags & CF_RUNNING)
738	LOAD (coro);	1100	croak ("FATAL: tried to destroy currently running coroutine");
739		1101
740	coro_destroy_stacks ();	1102	save_perl (aTHX_ &temp);
		1103	load_perl (aTHX_ coro);
741		1104
		1105	coro_destroy (aTHX_ coro);
		1106
742	LOAD ((&temp)); /* this will get rid of defsv etc.. */	1107	load_perl (aTHX_ &temp); /* this will get rid of defsv etc.. */
743		1108
744	coro->mainstack = 0;	1109	coro->mainstack = 0;
745	}	1110	}
746		1111
747	cctx_free (coro->cctx);	1112	cctx_destroy (coro->cctx);
748	SvREFCNT_dec (coro->args);	1113	SvREFCNT_dec (coro->args);
749	Safefree (coro);	1114
		1115	if (coro->next) coro->next->prev = coro->prev;
		1116	if (coro->prev) coro->prev->next = coro->next;
		1117	if (coro == coro_first) coro_first = coro->next;
		1118
		1119	return 1;
750	}	1120	}
751		1121
752	static int	1122	static int
753	coro_state_clear (pTHX_ SV sv, MAGIC mg)	1123	coro_state_free (pTHX_ SV sv, MAGIC mg)
754	{	1124	{
755	struct coro coro = (struct coro )mg->mg_ptr;	1125	struct coro coro = (struct coro )mg->mg_ptr;
756	mg->mg_ptr = 0;	1126	mg->mg_ptr = 0;
757		1127
		1128	coro->hv = 0;
		1129
		1130	if (--coro->refcnt < 0)
		1131	{
758	coro_state_destroy (coro);	1132	coro_state_destroy (aTHX_ coro);
		1133	Safefree (coro);
		1134	}
759		1135
760	return 0;	1136	return 0;
761	}	1137	}
762		1138
763	static int	1139	static int
…		…
770	return 0;	1146	return 0;
771	}	1147	}
772		1148
773	static MGVTBL coro_state_vtbl = {	1149	static MGVTBL coro_state_vtbl = {
774	0, 0, 0, 0,	1150	0, 0, 0, 0,
775	coro_state_clear,	1151	coro_state_free,
776	0,	1152	0,
777	#ifdef MGf_DUP	1153	#ifdef MGf_DUP
778	coro_state_dup,	1154	coro_state_dup,
779	#else	1155	#else
780	# define MGf_DUP 0	1156	# define MGf_DUP 0
781	#endif	1157	#endif
782	};	1158	};
783		1159
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	1160	static void
807	prepare_transfer (struct transfer_args ta, SV prev, SV *next, int flags)	1161	prepare_transfer (pTHX_ struct transfer_args ta, SV prev_sv, SV *next_sv)
808	{	1162	{
809	ta->prev = SvSTATE (prev);	1163	ta->prev = SvSTATE (prev_sv);
810	ta->next = SvSTATE (next);	1164	ta->next = SvSTATE (next_sv);
811	ta->flags = flags;	1165	TRANSFER_CHECK (*ta);
812	}	1166	}
813		1167
814	static void	1168	static void
815	api_transfer (SV prev, SV next, int flags)	1169	api_transfer (SV prev_sv, SV next_sv)
816	{	1170	{
817	dTHX;	1171	dTHX;
818	struct transfer_args ta;	1172	struct transfer_args ta;
819		1173
820	prepare_transfer (&ta, prev, next, flags);	1174	prepare_transfer (aTHX_ &ta, prev_sv, next_sv);
821	TRANSFER (ta);	1175	TRANSFER (ta);
822	}	1176	}
823		1177
824	/ Coro ******************************************************************/	1178	/ Coro ******************************************************************/
825		1179
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	1180	static void
839	coro_enq (SV *sv)	1181	coro_enq (pTHX_ SV *coro_sv)
840	{	1182	{
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);	1183	av_push (coro_ready [SvSTATE (coro_sv)->prio - PRIO_MIN], coro_sv);
849	coro_nready++;
850	}	1184	}
851		1185
852	static SV *	1186	static SV *
853	coro_deq (int min_prio)	1187	coro_deq (pTHX_ int min_prio)
854	{	1188	{
855	int prio = PRIO_MAX - PRIO_MIN;	1189	int prio = PRIO_MAX - PRIO_MIN;
856		1190
857	min_prio -= PRIO_MIN;	1191	min_prio -= PRIO_MIN;
858	if (min_prio < 0)	1192	if (min_prio < 0)
859	min_prio = 0;	1193	min_prio = 0;
860		1194
861	for (prio = PRIO_MAX - PRIO_MIN + 1; --prio >= min_prio; )	1195	for (prio = PRIO_MAX - PRIO_MIN + 1; --prio >= min_prio; )
862	if (AvFILLp (coro_ready [prio]) >= 0)	1196	if (AvFILLp (coro_ready [prio]) >= 0)
863	{
864	coro_nready--;
865	return av_shift (coro_ready [prio]);	1197	return av_shift (coro_ready [prio]);
866	}
867		1198
868	return 0;	1199	return 0;
869	}	1200	}
870		1201
871	static void	1202	static int
872	api_ready (SV *coro)	1203	api_ready (SV *coro_sv)
873	{	1204	{
874	dTHX;	1205	dTHX;
		1206	struct coro *coro;
875		1207
876	if (SvROK (coro))	1208	if (SvROK (coro_sv))
877	coro = SvRV (coro);	1209	coro_sv = SvRV (coro_sv);
		1210
		1211	coro = SvSTATE (coro_sv);
		1212
		1213	if (coro->flags & CF_READY)
		1214	return 0;
		1215
		1216	coro->flags \|= CF_READY;
878		1217
879	LOCK;	1218	LOCK;
880	coro_enq (SvREFCNT_inc (coro));	1219	coro_enq (aTHX_ SvREFCNT_inc (coro_sv));
		1220	++coro_nready;
881	UNLOCK;	1221	UNLOCK;
882	}
883		1222
		1223	return 1;
		1224	}
		1225
884	static void	1226	static int
		1227	api_is_ready (SV *coro_sv)
		1228	{
		1229	dTHX;
		1230	return !!(SvSTATE (coro_sv)->flags & CF_READY);
		1231	}
		1232
		1233	static void
885	prepare_schedule (struct transfer_args *ta)	1234	prepare_schedule (pTHX_ struct transfer_args *ta)
886	{	1235	{
887	SV current, prev, *next;	1236	SV prev_sv, next_sv;
888
889	current = GvSV (coro_current);
890		1237
891	for (;;)	1238	for (;;)
892	{	1239	{
893	LOCK;	1240	LOCK;
894	next = coro_deq (PRIO_MIN);	1241	next_sv = coro_deq (aTHX_ PRIO_MIN);
		1242
		1243	/* nothing to schedule: call the idle handler */
		1244	if (!next_sv)
		1245	{
		1246	dSP;
		1247	UNLOCK;
		1248
		1249	ENTER;
		1250	SAVETMPS;
		1251
		1252	PUSHMARK (SP);
		1253	PUTBACK;
		1254	call_sv (get_sv ("Coro::idle", FALSE), G_DISCARD);
		1255
		1256	FREETMPS;
		1257	LEAVE;
		1258	continue;
		1259	}
		1260
		1261	ta->next = SvSTATE (next_sv);
		1262
		1263	/* cannot transfer to destroyed coros, skip and look for next */
		1264	if (ta->next->flags & CF_DESTROYED)
		1265	{
		1266	UNLOCK;
		1267	SvREFCNT_dec (next_sv);
		1268	/* coro_nready is already taken care of by destroy */
		1269	continue;
		1270	}
		1271
		1272	--coro_nready;
895	UNLOCK;	1273	UNLOCK;
896
897	if (next)
898	break;	1274	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	}	1275	}
913	}
914
915	prev = SvRV (current);
916	SvRV (current) = next;
917		1276
918	/* free this only after the transfer */	1277	/* free this only after the transfer */
		1278	prev_sv = SvRV (coro_current);
		1279	ta->prev = SvSTATE (prev_sv);
		1280	TRANSFER_CHECK (*ta);
		1281	assert (ta->next->flags & CF_READY);
		1282	ta->next->flags &= ~CF_READY;
		1283	SvRV_set (coro_current, next_sv);
		1284
919	LOCK;	1285	LOCK;
920	free_coro_mortal ();	1286	free_coro_mortal (aTHX);
		1287	coro_mortal = prev_sv;
921	UNLOCK;	1288	UNLOCK;
922	coro_mortal = prev;
923
924	ta->prev = SvSTATE (prev);
925	ta->next = SvSTATE (next);
926	ta->flags = TRANSFER_SAVE_ALL;
927	}	1289	}
928		1290
929	static void	1291	static void
930	prepare_cede (struct transfer_args *ta)	1292	prepare_cede (pTHX_ struct transfer_args *ta)
931	{	1293	{
932	LOCK;	1294	api_ready (coro_current);
933	coro_enq (SvREFCNT_inc (SvRV (GvSV (coro_current))));
934	UNLOCK;
935
936	prepare_schedule (ta);	1295	prepare_schedule (aTHX_ ta);
		1296	}
		1297
		1298	static int
		1299	prepare_cede_notself (pTHX_ struct transfer_args *ta)
		1300	{
		1301	if (coro_nready)
		1302	{
		1303	SV *prev = SvRV (coro_current);
		1304	prepare_schedule (aTHX_ ta);
		1305	api_ready (prev);
		1306	return 1;
		1307	}
		1308	else
		1309	return 0;
937	}	1310	}
938		1311
939	static void	1312	static void
940	api_schedule (void)	1313	api_schedule (void)
941	{	1314	{
942	dTHX;	1315	dTHX;
943	struct transfer_args ta;	1316	struct transfer_args ta;
944		1317
945	prepare_schedule (&ta);	1318	prepare_schedule (aTHX_ &ta);
946	TRANSFER (ta);	1319	TRANSFER (ta);
947	}	1320	}
948		1321
949	static void	1322	static int
950	api_cede (void)	1323	api_cede (void)
951	{	1324	{
952	dTHX;	1325	dTHX;
953	struct transfer_args ta;	1326	struct transfer_args ta;
954		1327
955	prepare_cede (&ta);	1328	prepare_cede (aTHX_ &ta);
		1329
		1330	if (ta.prev != ta.next)
		1331	{
956	TRANSFER (ta);	1332	TRANSFER (ta);
		1333	return 1;
		1334	}
		1335	else
		1336	return 0;
957	}	1337	}
958		1338
		1339	static int
		1340	api_cede_notself (void)
		1341	{
		1342	dTHX;
		1343	struct transfer_args ta;
		1344
		1345	if (prepare_cede_notself (aTHX_ &ta))
		1346	{
		1347	TRANSFER (ta);
		1348	return 1;
		1349	}
		1350	else
		1351	return 0;
		1352	}
		1353
		1354	static void
		1355	api_trace (SV *coro_sv, int flags)
		1356	{
		1357	dTHX;
		1358	struct coro *coro = SvSTATE (coro_sv);
		1359
		1360	if (flags & CC_TRACE)
		1361	{
		1362	if (!coro->cctx)
		1363	coro->cctx = cctx_new ();
		1364	else if (!(coro->cctx->flags & CC_TRACE))
		1365	croak ("cannot enable tracing on coroutine with custom stack");
		1366
		1367	coro->cctx->flags \|= CC_NOREUSE \| (flags & (CC_TRACE \| CC_TRACE_ALL));
		1368	}
		1369	else if (coro->cctx && coro->cctx->flags & CC_TRACE)
		1370	{
		1371	coro->cctx->flags &= ~(CC_TRACE \| CC_TRACE_ALL);
		1372
		1373	if (coro->flags & CF_RUNNING)
		1374	PL_runops = RUNOPS_DEFAULT;
		1375	else
		1376	coro->runops = RUNOPS_DEFAULT;
		1377	}
		1378	}
		1379
959	MODULE = Coro::State PACKAGE = Coro::State	1380	MODULE = Coro::State PACKAGE = Coro::State PREFIX = api_
960		1381
961	PROTOTYPES: DISABLE	1382	PROTOTYPES: DISABLE
962		1383
963	BOOT:	1384	BOOT:
964	{	1385	{
965	#ifdef USE_ITHREADS	1386	#ifdef USE_ITHREADS
966	MUTEX_INIT (&coro_mutex);	1387	MUTEX_INIT (&coro_mutex);
967	#endif	1388	#endif
968	BOOT_PAGESIZE;	1389	BOOT_PAGESIZE;
969		1390
		1391	irsgv = gv_fetchpv ("/", 1, SVt_PV);
		1392
970	coro_state_stash = gv_stashpv ("Coro::State", TRUE);	1393	coro_state_stash = gv_stashpv ("Coro::State", TRUE);
971		1394
972	newCONSTSUB (coro_state_stash, "SAVE_DEFAV", newSViv (TRANSFER_SAVE_DEFAV));	1395	newCONSTSUB (coro_state_stash, "CC_TRACE" , newSViv (CC_TRACE));
973	newCONSTSUB (coro_state_stash, "SAVE_DEFSV", newSViv (TRANSFER_SAVE_DEFSV));	1396	newCONSTSUB (coro_state_stash, "CC_TRACE_SUB" , newSViv (CC_TRACE_SUB));
974	newCONSTSUB (coro_state_stash, "SAVE_ERRSV", newSViv (TRANSFER_SAVE_ERRSV));	1397	newCONSTSUB (coro_state_stash, "CC_TRACE_LINE", newSViv (CC_TRACE_LINE));
		1398	newCONSTSUB (coro_state_stash, "CC_TRACE_ALL" , newSViv (CC_TRACE_ALL));
975		1399
976	main_mainstack = PL_mainstack;	1400	main_mainstack = PL_mainstack;
		1401	main_top_env = PL_top_env;
		1402
		1403	while (main_top_env->je_prev)
		1404	main_top_env = main_top_env->je_prev;
977		1405
978	coroapi.ver = CORO_API_VERSION;	1406	coroapi.ver = CORO_API_VERSION;
979	coroapi.transfer = api_transfer;	1407	coroapi.transfer = api_transfer;
980		1408
981	assert (("PRIO_NORMAL must be 0", !PRIO_NORMAL));	1409	assert (("PRIO_NORMAL must be 0", !PRIO_NORMAL));
…		…
988	struct coro *coro;	1416	struct coro *coro;
989	HV *hv;	1417	HV *hv;
990	int i;	1418	int i;
991		1419
992	Newz (0, coro, 1, struct coro);	1420	Newz (0, coro, 1, struct coro);
993	coro->args = newAV ();	1421	coro->args = newAV ();
		1422	coro->flags = CF_NEW;
994		1423
		1424	if (coro_first) coro_first->prev = coro;
		1425	coro->next = coro_first;
		1426	coro_first = coro;
		1427
995	hv = newHV ();	1428	coro->hv = hv = newHV ();
996	sv_magicext ((SV )hv, 0, PERL_MAGIC_ext, &coro_state_vtbl, (char )coro, 0)->mg_flags \|= MGf_DUP;	1429	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));	1430	RETVAL = sv_bless (newRV_noinc ((SV *)hv), gv_stashpv (klass, 1));
998		1431
999	for (i = 1; i < items; i++)	1432	for (i = 1; i < items; i++)
1000	av_push (coro->args, newSVsv (ST (i)));	1433	av_push (coro->args, newSVsv (ST (i)));
1001	}	1434	}
1002	OUTPUT:	1435	OUTPUT:
1003	RETVAL	1436	RETVAL
1004		1437
		1438	# these not obviously related functions are all rolled into the same xs
		1439	# function to increase chances that they all will call transfer with the same
		1440	# stack offset
1005	void	1441	void
1006	_set_stacklevel (...)	1442	_set_stacklevel (...)
1007	ALIAS:	1443	ALIAS:
1008	Coro::State::transfer = 1	1444	Coro::State::transfer = 1
1009	Coro::schedule = 2	1445	Coro::schedule = 2
1010	Coro::cede = 3	1446	Coro::cede = 3
1011	Coro::Cont::yield = 4	1447	Coro::cede_notself = 4
1012	CODE:	1448	CODE:
1013	{	1449	{
1014	struct transfer_args ta;	1450	struct transfer_args ta;
1015		1451
1016	switch (ix)	1452	switch (ix)
1017	{	1453	{
1018	case 0:	1454	case 0:
1019	ta.prev = (struct coro )INT2PTR (coro_cctx , SvIV (ST (0)));	1455	ta.prev = (struct coro )INT2PTR (coro_cctx , SvIV (ST (0)));
1020	ta.next = 0;	1456	ta.next = 0;
1021	ta.flags = TRANSFER_SET_STACKLEVEL;
1022	break;	1457	break;
1023		1458
1024	case 1:	1459	case 1:
1025	if (items != 3)	1460	if (items != 2)
1026	croak ("Coro::State::transfer(prev,next,flags) expects three arguments, not %d", items);	1461	croak ("Coro::State::transfer (prev,next) expects two arguments, not %d", items);
1027		1462
1028	prepare_transfer (&ta, ST (0), ST (1), SvIV (ST (2)));	1463	prepare_transfer (aTHX_ &ta, ST (0), ST (1));
1029	break;	1464	break;
1030		1465
1031	case 2:	1466	case 2:
1032	prepare_schedule (&ta);	1467	prepare_schedule (aTHX_ &ta);
1033	break;	1468	break;
1034		1469
1035	case 3:	1470	case 3:
1036	prepare_cede (&ta);	1471	prepare_cede (aTHX_ &ta);
1037	break;	1472	break;
1038		1473
1039	case 4:	1474	case 4:
1040	{	1475	if (!prepare_cede_notself (aTHX_ &ta))
1041	SV *yieldstack;	1476	XSRETURN_EMPTY;
1042	SV *sv;
1043	AV *defav = GvAV (PL_defgv);
1044		1477
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;	1478	break;
1064
1065	}	1479	}
1066		1480
		1481	BARRIER;
1067	TRANSFER (ta);	1482	TRANSFER (ta);
1068	}
1069		1483
1070	void	1484	if (GIMME_V != G_VOID && ta.next != ta.prev)
1071	_clone_state_from (SV dst, SV src)	1485	XSRETURN_YES;
		1486	}
		1487
		1488	bool
		1489	_destroy (SV *coro_sv)
1072	CODE:	1490	CODE:
1073	{	1491	RETVAL = coro_state_destroy (aTHX_ SvSTATE (coro_sv));
1074	struct coro *coro_src = SvSTATE (src);	1492	OUTPUT:
1075		1493	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		1494
1082	void	1495	void
1083	_exit (code)	1496	_exit (code)
1084	int code	1497	int code
1085	PROTOTYPE: $	1498	PROTOTYPE: $
1086	CODE:	1499	CODE:
1087	_exit (code);	1500	_exit (code);
1088		1501
1089	int	1502	int
		1503	cctx_stacksize (int new_stacksize = 0)
		1504	CODE:
		1505	RETVAL = coro_stacksize;
		1506	if (new_stacksize)
		1507	coro_stacksize = new_stacksize;
		1508	OUTPUT:
		1509	RETVAL
		1510
		1511	int
1090	cctx_count ()	1512	cctx_count ()
1091	CODE:	1513	CODE:
1092	RETVAL = cctx_count;	1514	RETVAL = cctx_count;
1093	OUTPUT:	1515	OUTPUT:
1094	RETVAL	1516	RETVAL
…		…
1098	CODE:	1520	CODE:
1099	RETVAL = cctx_idle;	1521	RETVAL = cctx_idle;
1100	OUTPUT:	1522	OUTPUT:
1101	RETVAL	1523	RETVAL
1102		1524
		1525	void
		1526	list ()
		1527	PPCODE:
		1528	{
		1529	struct coro *coro;
		1530	for (coro = coro_first; coro; coro = coro->next)
		1531	if (coro->hv)
		1532	XPUSHs (sv_2mortal (newRV_inc ((SV *)coro->hv)));
		1533	}
		1534
		1535	void
		1536	call (Coro::State coro, SV *coderef)
		1537	ALIAS:
		1538	eval = 1
		1539	CODE:
		1540	{
		1541	if (coro->mainstack)
		1542	{
		1543	struct coro temp;
		1544	Zero (&temp, 1, struct coro);
		1545
		1546	if (!(coro->flags & CF_RUNNING))
		1547	{
		1548	save_perl (aTHX_ &temp);
		1549	load_perl (aTHX_ coro);
		1550	}
		1551
		1552	{
		1553	dSP;
		1554	ENTER;
		1555	SAVETMPS;
		1556	PUSHMARK (SP);
		1557	PUTBACK;
		1558	if (ix)
		1559	eval_sv (coderef, 0);
		1560	else
		1561	call_sv (coderef, G_KEEPERR \| G_EVAL \| G_VOID \| G_DISCARD);
		1562	SPAGAIN;
		1563	FREETMPS;
		1564	LEAVE;
		1565	PUTBACK;
		1566	}
		1567
		1568	if (!(coro->flags & CF_RUNNING))
		1569	{
		1570	save_perl (aTHX_ coro);
		1571	load_perl (aTHX_ &temp);
		1572	}
		1573	}
		1574	}
		1575
		1576	SV *
		1577	is_ready (Coro::State coro)
		1578	PROTOTYPE: $
		1579	ALIAS:
		1580	is_ready = CF_READY
		1581	is_running = CF_RUNNING
		1582	is_new = CF_NEW
		1583	is_destroyed = CF_DESTROYED
		1584	CODE:
		1585	RETVAL = boolSV (coro->flags & ix);
		1586	OUTPUT:
		1587	RETVAL
		1588
		1589	void
		1590	api_trace (SV *coro, int flags = CC_TRACE \| CC_TRACE_SUB)
		1591
		1592	SV *
		1593	has_stack (Coro::State coro)
		1594	PROTOTYPE: $
		1595	CODE:
		1596	RETVAL = boolSV (!!coro->cctx);
		1597	OUTPUT:
		1598	RETVAL
		1599
		1600	int
		1601	is_traced (Coro::State coro)
		1602	PROTOTYPE: $
		1603	CODE:
		1604	RETVAL = (coro->cctx ? coro->cctx->flags : 0) & CC_TRACE_ALL;
		1605	OUTPUT:
		1606	RETVAL
		1607
		1608	IV
		1609	rss (Coro::State coro)
		1610	PROTOTYPE: $
		1611	ALIAS:
		1612	usecount = 1
		1613	CODE:
		1614	switch (ix)
		1615	{
		1616	case 0: RETVAL = coro_rss (aTHX_ coro); break;
		1617	case 1: RETVAL = coro->usecount; break;
		1618	}
		1619	OUTPUT:
		1620	RETVAL
		1621
		1622
1103	MODULE = Coro::State PACKAGE = Coro	1623	MODULE = Coro::State PACKAGE = Coro
1104		1624
1105	BOOT:	1625	BOOT:
1106	{	1626	{
1107	int i;	1627	int i;
		1628
		1629	sv_pool_rss = get_sv ("Coro::POOL_RSS" , TRUE);
		1630	sv_pool_size = get_sv ("Coro::POOL_SIZE" , TRUE);
		1631	av_async_pool = get_av ("Coro::async_pool", TRUE);
		1632
		1633	coro_current = get_sv ("Coro::current", FALSE);
		1634	SvREADONLY_on (coro_current);
1108		1635
1109	coro_stash = gv_stashpv ("Coro", TRUE);	1636	coro_stash = gv_stashpv ("Coro", TRUE);
1110		1637
1111	newCONSTSUB (coro_stash, "PRIO_MAX", newSViv (PRIO_MAX));	1638	newCONSTSUB (coro_stash, "PRIO_MAX", newSViv (PRIO_MAX));
1112	newCONSTSUB (coro_stash, "PRIO_HIGH", newSViv (PRIO_HIGH));	1639	newCONSTSUB (coro_stash, "PRIO_HIGH", newSViv (PRIO_HIGH));
1113	newCONSTSUB (coro_stash, "PRIO_NORMAL", newSViv (PRIO_NORMAL));	1640	newCONSTSUB (coro_stash, "PRIO_NORMAL", newSViv (PRIO_NORMAL));
1114	newCONSTSUB (coro_stash, "PRIO_LOW", newSViv (PRIO_LOW));	1641	newCONSTSUB (coro_stash, "PRIO_LOW", newSViv (PRIO_LOW));
1115	newCONSTSUB (coro_stash, "PRIO_IDLE", newSViv (PRIO_IDLE));	1642	newCONSTSUB (coro_stash, "PRIO_IDLE", newSViv (PRIO_IDLE));
1116	newCONSTSUB (coro_stash, "PRIO_MIN", newSViv (PRIO_MIN));	1643	newCONSTSUB (coro_stash, "PRIO_MIN", newSViv (PRIO_MIN));
1117		1644
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--; )	1645	for (i = PRIO_MAX - PRIO_MIN + 1; i--; )
1122	coro_ready[i] = newAV ();	1646	coro_ready[i] = newAV ();
1123		1647
1124	{	1648	{
1125	SV *sv = perl_get_sv("Coro::API", 1);	1649	SV *sv = perl_get_sv("Coro::API", 1);
1126		1650
1127	coroapi.schedule = api_schedule;	1651	coroapi.schedule = api_schedule;
1128	coroapi.cede = api_cede;	1652	coroapi.cede = api_cede;
		1653	coroapi.cede_notself = api_cede_notself;
1129	coroapi.ready = api_ready;	1654	coroapi.ready = api_ready;
		1655	coroapi.is_ready = api_is_ready;
1130	coroapi.nready = &coro_nready;	1656	coroapi.nready = &coro_nready;
1131	coroapi.current = coro_current;	1657	coroapi.current = coro_current;
1132		1658
1133	GCoroAPI = &coroapi;	1659	GCoroAPI = &coroapi;
1134	sv_setiv (sv, (IV)&coroapi);	1660	sv_setiv (sv, (IV)&coroapi);
1135	SvREADONLY_on (sv);	1661	SvREADONLY_on (sv);
1136	}	1662	}
1137	}	1663	}
		1664
		1665	void
		1666	_set_current (SV *current)
		1667	PROTOTYPE: $
		1668	CODE:
		1669	SvREFCNT_dec (SvRV (coro_current));
		1670	SvRV_set (coro_current, SvREFCNT_inc (SvRV (current)));
1138		1671
1139	int	1672	int
1140	prio (Coro::State coro, int newprio = 0)	1673	prio (Coro::State coro, int newprio = 0)
1141	ALIAS:	1674	ALIAS:
1142	nice = 1	1675	nice = 1
…		…
1145	RETVAL = coro->prio;	1678	RETVAL = coro->prio;
1146		1679
1147	if (items > 1)	1680	if (items > 1)
1148	{	1681	{
1149	if (ix)	1682	if (ix)
1150	newprio += coro->prio;	1683	newprio = coro->prio - newprio;
1151		1684
1152	if (newprio < PRIO_MIN) newprio = PRIO_MIN;	1685	if (newprio < PRIO_MIN) newprio = PRIO_MIN;
1153	if (newprio > PRIO_MAX) newprio = PRIO_MAX;	1686	if (newprio > PRIO_MAX) newprio = PRIO_MAX;
1154		1687
1155	coro->prio = newprio;	1688	coro->prio = newprio;
1156	}	1689	}
1157	}	1690	}
		1691	OUTPUT:
		1692	RETVAL
1158		1693
1159	void	1694	SV *
1160	ready (SV *self)	1695	ready (SV *self)
1161	PROTOTYPE: $	1696	PROTOTYPE: $
1162	CODE:	1697	CODE:
1163	api_ready (self);	1698	RETVAL = boolSV (api_ready (self));
		1699	OUTPUT:
		1700	RETVAL
1164		1701
1165	int	1702	int
1166	nready (...)	1703	nready (...)
1167	PROTOTYPE:	1704	PROTOTYPE:
1168	CODE:	1705	CODE:
1169	RETVAL = coro_nready;	1706	RETVAL = coro_nready;
1170	OUTPUT:	1707	OUTPUT:
1171	RETVAL	1708	RETVAL
1172		1709
		1710	# for async_pool speedup
		1711	void
		1712	_pool_1 (SV *cb)
		1713	CODE:
		1714	{
		1715	struct coro *coro = SvSTATE (coro_current);
		1716	HV hv = (HV )SvRV (coro_current);
		1717	AV *defav = GvAV (PL_defgv);
		1718	SV *invoke = hv_delete (hv, "_invoke", sizeof ("_invoke") - 1, 0);
		1719	AV *invoke_av;
		1720	int i, len;
		1721
		1722	if (!invoke)
		1723	croak ("\3terminate\2\n");
		1724
		1725	SvREFCNT_dec (coro->saved_deffh);
		1726	coro->saved_deffh = SvREFCNT_inc ((SV *)PL_defoutgv);
		1727
		1728	hv_store (hv, "desc", sizeof ("desc") - 1,
		1729	newSVpvn ("[async_pool]", sizeof ("[async_pool]") - 1), 0);
		1730
		1731	invoke_av = (AV *)SvRV (invoke);
		1732	len = av_len (invoke_av);
		1733
		1734	sv_setsv (cb, AvARRAY (invoke_av)[0]);
		1735
		1736	if (len > 0)
		1737	{
		1738	av_fill (defav, len - 1);
		1739	for (i = 0; i < len; ++i)
		1740	av_store (defav, i, SvREFCNT_inc (AvARRAY (invoke_av)[i + 1]));
		1741	}
		1742
		1743	SvREFCNT_dec (invoke);
		1744	}
		1745
		1746	void
		1747	_pool_2 (SV *cb)
		1748	CODE:
		1749	{
		1750	struct coro *coro = SvSTATE (coro_current);
		1751
		1752	sv_setsv (cb, &PL_sv_undef);
		1753
		1754	SvREFCNT_dec ((SV )PL_defoutgv); PL_defoutgv = (GV )coro->saved_deffh;
		1755	coro->saved_deffh = 0;
		1756
		1757	if (coro_rss (aTHX_ coro) > SvIV (sv_pool_rss)
		1758	\|\| av_len (av_async_pool) + 1 >= SvIV (sv_pool_size))
		1759	croak ("\3terminate\2\n");
		1760
		1761	av_clear (GvAV (PL_defgv));
		1762	hv_store ((HV *)SvRV (coro_current), "desc", sizeof ("desc") - 1,
		1763	newSVpvn ("[async_pool idle]", sizeof ("[async_pool idle]") - 1), 0);
		1764
		1765	coro->prio = 0;
		1766
		1767	if (coro->cctx && (coro->cctx->flags & CC_TRACE))
		1768	api_trace (coro_current, 0);
		1769
		1770	av_push (av_async_pool, newSVsv (coro_current));
		1771	}
		1772
		1773
1173	MODULE = Coro::State PACKAGE = Coro::AIO	1774	MODULE = Coro::State PACKAGE = Coro::AIO
1174		1775
1175	SV *	1776	SV *
1176	_get_state ()	1777	_get_state ()
1177	CODE:	1778	CODE:
1178	{	1779	{
1179	struct {	1780	struct io_state *data;
1180	int errorno;
1181	int laststype;
1182	int laststatval;
1183	Stat_t statcache;
1184	} data;
1185		1781
		1782	RETVAL = newSV (sizeof (struct io_state));
		1783	data = (struct io_state *)SvPVX (RETVAL);
		1784	SvCUR_set (RETVAL, sizeof (struct io_state));
		1785	SvPOK_only (RETVAL);
		1786
1186	data.errorno = errno;	1787	data->errorno = errno;
1187	data.laststype = PL_laststype;	1788	data->laststype = PL_laststype;
1188	data.laststatval = PL_laststatval;	1789	data->laststatval = PL_laststatval;
1189	data.statcache = PL_statcache;	1790	data->statcache = PL_statcache;
1190
1191	RETVAL = newSVpvn ((char *)&data, sizeof data);
1192	}	1791	}
1193	OUTPUT:	1792	OUTPUT:
1194	RETVAL	1793	RETVAL
1195		1794
1196	void	1795	void
1197	_set_state (char *data_)	1796	_set_state (char *data_)
1198	PROTOTYPE: $	1797	PROTOTYPE: $
1199	CODE:	1798	CODE:
1200	{	1799	{
1201	struct {	1800	struct io_state data = (void )data_;
1202	int errorno;
1203	int laststype;
1204	int laststatval;
1205	Stat_t statcache;
1206	} data = (void )data_;
1207		1801
1208	errno = data->errorno;	1802	errno = data->errorno;
1209	PL_laststype = data->laststype;	1803	PL_laststype = data->laststype;
1210	PL_laststatval = data->laststatval;	1804	PL_laststatval = data->laststatval;
1211	PL_statcache = data->statcache;	1805	PL_statcache = data->statcache;
1212	}	1806	}
		1807

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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 1.186 by root, Fri Oct 5 20:10:42 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 1.186 by root, Fri Oct 5 20:10:42 2007 UTC