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

Comparing Coro/Coro/State.xs (file contents):
Revision 1.111 by root, Thu Nov 30 18:21:14 2006 UTC vs.
Revision 1.187 by root, Fri Oct 5 20:31:18 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	int inuse;
125
126	#if USE_VALGRIND	170	#if CORO_USE_VALGRIND
127	int valgrind_id;	171	int valgrind_id;
128	#endif	172	#endif
		173	unsigned char flags;
129	} coro_cctx;	174	} coro_cctx;
130		175
131	enum {	176	enum {
132	CF_RUNNING, /* coroutine is running */	177	CF_RUNNING = 0x0001, /* coroutine is running */
133	CF_READY, /* coroutine is ready */	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 */
134	};	181	};
135		182
136	/* this is a structure representing a perl-level coroutine */	183	/* this is a structure representing a perl-level coroutine */
137	struct coro {	184	struct coro {
138	/* the c coroutine allocated to this perl coroutine, if any */	185	/* the c coroutine allocated to this perl coroutine, if any */
139	coro_cctx *cctx;	186	coro_cctx *cctx;
140		187
141	/* data associated with this coroutine (initial args) */	188	/* data associated with this coroutine (initial args) */
142	AV *args;	189	AV *args;
143	int refcnt;	190	int refcnt;
144	int flags;	191	int flags; /* CF_ flags */
145		192
146	/* optionally saved, might be zero */	193	/* optionally saved, might be zero */
147	AV *defav;	194	AV defav; / @_ */
148	SV *defsv;	195	SV defsv; / $_ */
149	SV *errsv;	196	SV errsv; / $@ */
		197	SV deffh; / default filehandle */
		198	SV irssv; / $/ */
		199	SV irssv_sv; / real $/ cache */
150		200
151	#define VAR(name,type) type name;	201	#define VAR(name,type) type name;
152	# include "state.h"	202	# include "state.h"
153	#undef VAR	203	#undef VAR
154		204
		205	/* statistics */
		206	int usecount; /* number of transfers to this coro */
		207
155	/* coro process data */	208	/* coro process data */
156	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 */
157	};	218	};
158		219
159	typedef struct coro *Coro__State;	220	typedef struct coro *Coro__State;
160	typedef struct coro *Coro__State_or_hashref;	221	typedef struct coro *Coro__State_or_hashref;
161		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
162	static AV *	240	static AV *
163	coro_clone_padlist (CV *cv)	241	coro_clone_padlist (pTHX_ CV *cv)
164	{	242	{
165	AV *padlist = CvPADLIST (cv);	243	AV *padlist = CvPADLIST (cv);
166	AV newpadlist, newpad;	244	AV newpadlist, newpad;
167		245
168	newpadlist = newAV ();	246	newpadlist = newAV ();
…		…
180		258
181	return newpadlist;	259	return newpadlist;
182	}	260	}
183		261
184	static void	262	static void
185	free_padlist (AV *padlist)	263	free_padlist (pTHX_ AV *padlist)
186	{	264	{
187	/* may be during global destruction */	265	/* may be during global destruction */
188	if (SvREFCNT (padlist))	266	if (SvREFCNT (padlist))
189	{	267	{
190	I32 i = AvFILLp (padlist);	268	I32 i = AvFILLp (padlist);
…		…
211	AV *padlist;	289	AV *padlist;
212	AV av = (AV )mg->mg_obj;	290	AV av = (AV )mg->mg_obj;
213		291
214	/* casting is fun. */	292	/* casting is fun. */
215	while (&PL_sv_undef != (SV )(padlist = (AV )av_pop (av)))	293	while (&PL_sv_undef != (SV )(padlist = (AV )av_pop (av)))
216	free_padlist (padlist);	294	free_padlist (aTHX_ padlist);
217		295
218	SvREFCNT_dec (av);	296	SvREFCNT_dec (av);
219		297
220	return 0;	298	return 0;
221	}	299	}
…		…
229	? SvMAGIC (cv)->mg_type == PERL_MAGIC_coro \	307	? SvMAGIC (cv)->mg_type == PERL_MAGIC_coro \
230	? SvMAGIC (cv) \	308	? SvMAGIC (cv) \
231	: mg_find ((SV *)cv, PERL_MAGIC_coro) \	309	: mg_find ((SV *)cv, PERL_MAGIC_coro) \
232	: 0	310	: 0
233		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
234	/* the next two functions merely cache the padlists */	338	/* the next two functions merely cache the padlists */
235	static void	339	static void
236	get_padlist (CV *cv)	340	get_padlist (pTHX_ CV *cv)
237	{	341	{
238	MAGIC *mg = CORO_MAGIC (cv);	342	MAGIC *mg = CORO_MAGIC (cv);
239	AV *av;	343	AV *av;
240		344
241	if (mg && AvFILLp ((av = (AV *)mg->mg_obj)) >= 0)	345	if (mg && AvFILLp ((av = (AV *)mg->mg_obj)) >= 0)
242	CvPADLIST (cv) = (AV *)AvARRAY (av)[AvFILLp (av)--];	346	CvPADLIST (cv) = (AV *)AvARRAY (av)[AvFILLp (av)--];
243	else	347	else
244	{	348	{
245	#if 0	349	#if CORO_PREFER_PERL_FUNCTIONS
246	/* this is probably cleaner, but also slower? */	350	/* this is probably cleaner, but also slower? */
247	CV *cp = Perl_cv_clone (cv);	351	CV *cp = Perl_cv_clone (cv);
248	CvPADLIST (cv) = CvPADLIST (cp);	352	CvPADLIST (cv) = CvPADLIST (cp);
249	CvPADLIST (cp) = 0;	353	CvPADLIST (cp) = 0;
250	SvREFCNT_dec (cp);	354	SvREFCNT_dec (cp);
251	#else	355	#else
252	CvPADLIST (cv) = coro_clone_padlist (cv);	356	CvPADLIST (cv) = coro_clone_padlist (aTHX_ cv);
253	#endif	357	#endif
254	}	358	}
255	}	359	}
256		360
257	static void	361	static void
258	put_padlist (CV *cv)	362	put_padlist (pTHX_ CV *cv)
259	{	363	{
260	MAGIC *mg = CORO_MAGIC (cv);	364	MAGIC *mg = CORO_MAGIC (cv);
261	AV *av;	365	AV *av;
262		366
263	if (!mg)	367	if (!mg)
…		…
274	av_extend (av, AvMAX (av) + 1);	378	av_extend (av, AvMAX (av) + 1);
275		379
276	AvARRAY (av)[++AvFILLp (av)] = (SV *)CvPADLIST (cv);	380	AvARRAY (av)[++AvFILLp (av)] = (SV *)CvPADLIST (cv);
277	}	381	}
278		382
279	#define SB do {	383	/ load & save, init *****************************************************/
280	#define SE } while (0)
281		384
282	#define LOAD(state) load_state((state));
283	#define SAVE(state,flags) save_state((state),(flags));
284
285	#define REPLACE_SV(sv,val) SB SvREFCNT_dec(sv); (sv) = (val); (val) = 0; SE
286
287	static void	385	static void
288	load_state(Coro__State c)	386	load_perl (pTHX_ Coro__State c)
289	{	387	{
290	#define VAR(name,type) PL_ ## name = c->name;	388	#define VAR(name,type) PL_ ## name = c->name;
291	# include "state.h"	389	# include "state.h"
292	#undef VAR	390	#undef VAR
293		391
294	if (c->defav) REPLACE_SV (GvAV (PL_defgv), c->defav);	392	GvSV (PL_defgv) = c->defsv;
295	if (c->defsv) REPLACE_SV (DEFSV , c->defsv);	393	GvAV (PL_defgv) = c->defav;
296	if (c->errsv) REPLACE_SV (ERRSV , c->errsv);	394	GvSV (PL_errgv) = c->errsv;
		395	GvSV (irsgv) = c->irssv_sv;
297		396
298	{	397	{
299	dSP;	398	dSP;
300	CV *cv;	399	CV *cv;
301		400
302	/* now do the ugly restore mess */	401	/* now do the ugly restore mess */
303	while ((cv = (CV *)POPs))	402	while ((cv = (CV *)POPs))
304	{	403	{
305	put_padlist (cv); /* mark this padlist as available */	404	put_padlist (aTHX_ cv); /* mark this padlist as available */
306	CvDEPTH (cv) = PTR2IV (POPs);	405	CvDEPTH (cv) = PTR2IV (POPs);
307	CvPADLIST (cv) = (AV *)POPs;	406	CvPADLIST (cv) = (AV *)POPs;
308	}	407	}
309		408
310	PUTBACK;	409	PUTBACK;
311	}	410	}
312	}	411	}
313		412
314	static void	413	static void
315	save_state(Coro__State c, int flags)	414	save_perl (pTHX_ Coro__State c)
316	{	415	{
317	{	416	{
318	dSP;	417	dSP;
319	I32 cxix = cxstack_ix;	418	I32 cxix = cxstack_ix;
320	PERL_CONTEXT *ccstk = cxstack;	419	PERL_CONTEXT *ccstk = cxstack;
…		…
323	/*	422	/*
324	* 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
325	* (and reinitialize) all cv's in the whole callchain :(	424	* (and reinitialize) all cv's in the whole callchain :(
326	*/	425	*/
327		426
328	PUSHs (Nullsv);	427	XPUSHs (Nullsv);
329	/* this loop was inspired by pp_caller */	428	/* this loop was inspired by pp_caller */
330	for (;;)	429	for (;;)
331	{	430	{
332	while (cxix >= 0)	431	while (cxix >= 0)
333	{	432	{
334	PERL_CONTEXT *cx = &ccstk[cxix--];	433	PERL_CONTEXT *cx = &ccstk[cxix--];
335		434
336	if (CxTYPE(cx) == CXt_SUB)	435	if (CxTYPE (cx) == CXt_SUB \|\| CxTYPE (cx) == CXt_FORMAT)
337	{	436	{
338	CV *cv = cx->blk_sub.cv;	437	CV *cv = cx->blk_sub.cv;
339		438
340	if (CvDEPTH (cv))	439	if (CvDEPTH (cv))
341	{	440	{
342	EXTEND (SP, 3);	441	EXTEND (SP, 3);
343
344	PUSHs ((SV *)CvPADLIST(cv));	442	PUSHs ((SV *)CvPADLIST (cv));
345	PUSHs (INT2PTR (SV *, CvDEPTH (cv)));	443	PUSHs (INT2PTR (SV *, CvDEPTH (cv)));
346	PUSHs ((SV *)cv);	444	PUSHs ((SV *)cv);
347		445
348	CvDEPTH (cv) = 0;	446	CvDEPTH (cv) = 0;
349	get_padlist (cv);	447	get_padlist (aTHX_ cv);
350	}	448	}
351	}	449	}
352	#ifdef CXt_FORMAT
353	else if (CxTYPE(cx) == CXt_FORMAT)
354	{
355	/* I never used formats, so how should I know how these are implemented? */
356	/* my bold guess is as a simple, plain sub... */
357	croak ("CXt_FORMAT not yet handled. Don't switch coroutines from within formats");
358	}
359	#endif
360	}	450	}
361		451
362	if (top_si->si_type == PERLSI_MAIN)	452	if (top_si->si_type == PERLSI_MAIN)
363	break;	453	break;
364		454
365	top_si = top_si->si_prev;	455	top_si = top_si->si_prev;
366	ccstk = top_si->si_cxstack;	456	ccstk = top_si->si_cxstack;
367	cxix = top_si->si_cxix;	457	cxix = top_si->si_cxix;
368	}	458	}
369		459
370	PUTBACK;	460	PUTBACK;
371	}	461	}
372		462
373	c->defav = flags & TRANSFER_SAVE_DEFAV ? (AV *)SvREFCNT_inc (GvAV (PL_defgv)) : 0;	463	c->defav = GvAV (PL_defgv);
374	c->defsv = flags & TRANSFER_SAVE_DEFSV ? SvREFCNT_inc (DEFSV) : 0;	464	c->defsv = DEFSV;
375	c->errsv = flags & TRANSFER_SAVE_ERRSV ? SvREFCNT_inc (ERRSV) : 0;	465	c->errsv = ERRSV;
		466	c->irssv_sv = GvSV (irsgv);
376		467
377	#define VAR(name,type)c->name = PL_ ## name;	468	#define VAR(name,type)c->name = PL_ ## name;
378	# include "state.h"	469	# include "state.h"
379	#undef VAR	470	#undef VAR
380	}	471	}
…		…
383	* allocate various perl stacks. This is an exact copy	474	* allocate various perl stacks. This is an exact copy
384	* of perl.c:init_stacks, except that it uses less memory	475	* of perl.c:init_stacks, except that it uses less memory
385	* on the (sometimes correct) assumption that coroutines do	476	* on the (sometimes correct) assumption that coroutines do
386	* not usually need a lot of stackspace.	477	* not usually need a lot of stackspace.
387	*/	478	*/
		479	#if CORO_PREFER_PERL_FUNCTIONS
		480	# define coro_init_stacks init_stacks
		481	#else
388	static void	482	static void
389	coro_init_stacks ()	483	coro_init_stacks (pTHX)
390	{	484	{
391	PL_curstackinfo = new_stackinfo(96, 1024/sizeof(PERL_CONTEXT) - 1);	485	PL_curstackinfo = new_stackinfo(64, 6);
392	PL_curstackinfo->si_type = PERLSI_MAIN;	486	PL_curstackinfo->si_type = PERLSI_MAIN;
393	PL_curstack = PL_curstackinfo->si_stack;	487	PL_curstack = PL_curstackinfo->si_stack;
394	PL_mainstack = PL_curstack; /* remember in case we switch stacks */	488	PL_mainstack = PL_curstack; /* remember in case we switch stacks */
395		489
396	PL_stack_base = AvARRAY(PL_curstack);	490	PL_stack_base = AvARRAY(PL_curstack);
397	PL_stack_sp = PL_stack_base;	491	PL_stack_sp = PL_stack_base;
398	PL_stack_max = PL_stack_base + AvMAX(PL_curstack);	492	PL_stack_max = PL_stack_base + AvMAX(PL_curstack);
399		493
400	New(50,PL_tmps_stack,96,SV*);	494	New(50,PL_tmps_stack,64,SV*);
401	PL_tmps_floor = -1;	495	PL_tmps_floor = -1;
402	PL_tmps_ix = -1;	496	PL_tmps_ix = -1;
403	PL_tmps_max = 96;	497	PL_tmps_max = 64;
404		498
405	New(54,PL_markstack,16,I32);	499	New(54,PL_markstack,16,I32);
406	PL_markstack_ptr = PL_markstack;	500	PL_markstack_ptr = PL_markstack;
407	PL_markstack_max = PL_markstack + 16;	501	PL_markstack_max = PL_markstack + 16;
408		502
…		…
412		506
413	New(54,PL_scopestack,16,I32);	507	New(54,PL_scopestack,16,I32);
414	PL_scopestack_ix = 0;	508	PL_scopestack_ix = 0;
415	PL_scopestack_max = 16;	509	PL_scopestack_max = 16;
416		510
417	New(54,PL_savestack,96,ANY);	511	New(54,PL_savestack,64,ANY);
418	PL_savestack_ix = 0;	512	PL_savestack_ix = 0;
419	PL_savestack_max = 96;	513	PL_savestack_max = 64;
420		514
421	#if !PERL_VERSION_ATLEAST (5,9,0)	515	#if !PERL_VERSION_ATLEAST (5,9,0)
422	New(54,PL_retstack,8,OP*);	516	New(54,PL_retstack,4,OP*);
423	PL_retstack_ix = 0;	517	PL_retstack_ix = 0;
424	PL_retstack_max = 8;	518	PL_retstack_max = 4;
425	#endif	519	#endif
426	}	520	}
		521	#endif
427		522
428	/*	523	/*
429	* destroy the stacks, the callchain etc...	524	* destroy the stacks, the callchain etc...
430	*/	525	*/
431	static void	526	static void
432	coro_destroy_stacks ()	527	coro_destroy_stacks (pTHX)
433	{	528	{
434	if (!IN_DESTRUCT)
435	{
436	/* is this ugly, I ask? */
437	LEAVE_SCOPE (0);
438
439	/* sure it is, but more important: is it correct?? :/ */
440	FREETMPS;
441
442	/POPSTACK_TO (PL_mainstack);//D//use/
443	}
444
445	while (PL_curstackinfo->si_next)	529	while (PL_curstackinfo->si_next)
446	PL_curstackinfo = PL_curstackinfo->si_next;	530	PL_curstackinfo = PL_curstackinfo->si_next;
447		531
448	while (PL_curstackinfo)	532	while (PL_curstackinfo)
449	{	533	{
450	PERL_SI *p = PL_curstackinfo->si_prev;	534	PERL_SI *p = PL_curstackinfo->si_prev;
451		535
452	{ /D//remove/
453	dSP;
454	SWITCHSTACK (PL_curstack, PL_curstackinfo->si_stack);
455	PUTBACK; /* possibly superfluous */
456	}
457
458	if (!IN_DESTRUCT)	536	if (!IN_DESTRUCT)
459	{
460	dounwind (-1);/D//remove/
461	SvREFCNT_dec (PL_curstackinfo->si_stack);	537	SvREFCNT_dec (PL_curstackinfo->si_stack);
462	}
463		538
464	Safefree (PL_curstackinfo->si_cxstack);	539	Safefree (PL_curstackinfo->si_cxstack);
465	Safefree (PL_curstackinfo);	540	Safefree (PL_curstackinfo);
466	PL_curstackinfo = p;	541	PL_curstackinfo = p;
467	}	542	}
…		…
473	#if !PERL_VERSION_ATLEAST (5,9,0)	548	#if !PERL_VERSION_ATLEAST (5,9,0)
474	Safefree (PL_retstack);	549	Safefree (PL_retstack);
475	#endif	550	#endif
476	}	551	}
477		552
478	static void	553	static size_t
479	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)
480	{	588	{
481	/*	589	/*
482	* emulate part of the perl startup here.	590	* emulate part of the perl startup here.
483	*/	591	*/
484
485	coro_init_stacks ();	592	coro_init_stacks (aTHX);
486		593
		594	PL_runops = RUNOPS_DEFAULT;
		595	PL_curcop = &PL_compiling;
		596	PL_in_eval = EVAL_NULL;
487	PL_curcop = 0;	597	PL_comppad = 0;
488	PL_in_eval = 0;
489	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	SvREFCNT_inc (PL_defoutgv);
490		610
491	{	611	{
492	dSP;	612	dSP;
493	LOGOP myop;	613	LOGOP myop;
494		614
495	/* I have no idea why this is needed, but it is */
496	PUSHMARK (SP);
497
498	SvREFCNT_dec (GvAV (PL_defgv));
499	GvAV (PL_defgv) = coro->args; coro->args = 0;
500
501	Zero (&myop, 1, LOGOP);	615	Zero (&myop, 1, LOGOP);
502	myop.op_next = Nullop;	616	myop.op_next = Nullop;
503	myop.op_flags = OPf_WANT_VOID;	617	myop.op_flags = OPf_WANT_VOID;
504		618
		619	PUSHMARK (SP);
		620	XPUSHs (av_shift (GvAV (PL_defgv)));
		621	PUTBACK;
505	PL_op = (OP *)&myop;	622	PL_op = (OP *)&myop;
506
507	PUSHMARK (SP);
508	XPUSHs ((SV *)get_cv ("Coro::State::_coro_init", FALSE));
509	PUTBACK;
510	PL_op = PL_ppaddr[OP_ENTERSUB](aTHX);	623	PL_op = PL_ppaddr[OP_ENTERSUB](aTHX);
511	SPAGAIN;	624	SPAGAIN;
512
513	ENTER; /* necessary e.g. for dounwind */
514	}	625	}
515	}
516		626
		627	ENTER; /* necessary e.g. for dounwind */
		628	}
		629
517	static void	630	static void
		631	coro_destroy (pTHX_ struct coro *coro)
		632	{
		633	if (!IN_DESTRUCT)
		634	{
		635	/* restore all saved variables and stuff */
		636	LEAVE_SCOPE (0);
		637	assert (PL_tmps_floor == -1);
		638
		639	/* free all temporaries */
		640	FREETMPS;
		641	assert (PL_tmps_ix == -1);
		642
		643	/* unwind all extra stacks */
		644	POPSTACK_TO (PL_mainstack);
		645
		646	/* unwind main stack */
		647	dounwind (-1);
		648	}
		649
		650	SvREFCNT_dec (GvSV (PL_defgv));
		651	SvREFCNT_dec (GvAV (PL_defgv));
		652	SvREFCNT_dec (GvSV (PL_errgv));
		653	SvREFCNT_dec (PL_defoutgv);
		654	SvREFCNT_dec (PL_rs);
		655	SvREFCNT_dec (GvSV (irsgv));
		656
		657	SvREFCNT_dec (coro->saved_deffh);
		658	//SvREFCNT_dec (coro->throw);
		659
		660	coro_destroy_stacks (aTHX);
		661	}
		662
		663	static void
518	free_coro_mortal ()	664	free_coro_mortal (pTHX)
519	{	665	{
520	if (coro_mortal)	666	if (coro_mortal)
521	{	667	{
522	SvREFCNT_dec (coro_mortal);	668	SvREFCNT_dec (coro_mortal);
523	coro_mortal = 0;	669	coro_mortal = 0;
524	}	670	}
525	}	671	}
526		672
		673	static int
		674	runops_trace (pTHX)
		675	{
		676	COP *oldcop = 0;
		677	int oldcxix = -2;
		678	struct coro coro = SvSTATE (coro_current); / trace cctx is tied to specific coro */
		679	coro_cctx *cctx = coro->cctx;
		680
		681	while ((PL_op = CALL_FPTR (PL_op->op_ppaddr) (aTHX)))
		682	{
		683	PERL_ASYNC_CHECK ();
		684
		685	if (cctx->flags & CC_TRACE_ALL)
		686	{
		687	if (PL_op->op_type == OP_LEAVESUB && cctx->flags & CC_TRACE_SUB)
		688	{
		689	PERL_CONTEXT *cx = &cxstack[cxstack_ix];
		690	SV bot, top;
		691	AV av = newAV (); / return values */
		692	SV **cb;
		693	dSP;
		694
		695	GV *gv = CvGV (cx->blk_sub.cv);
		696	SV *fullname = sv_2mortal (newSV (0));
		697	if (isGV (gv))
		698	gv_efullname3 (fullname, gv, 0);
		699
		700	bot = PL_stack_base + cx->blk_oldsp + 1;
		701	top = cx->blk_gimme == G_ARRAY ? SP + 1
		702	: cx->blk_gimme == G_SCALAR ? bot + 1
		703	: bot;
		704
		705	while (bot < top)
		706	av_push (av, SvREFCNT_inc (*bot++));
		707
		708	PL_runops = RUNOPS_DEFAULT;
		709	ENTER;
		710	SAVETMPS;
		711	EXTEND (SP, 3);
		712	PUSHMARK (SP);
		713	PUSHs (&PL_sv_no);
		714	PUSHs (fullname);
		715	PUSHs (sv_2mortal (newRV_noinc ((SV *)av)));
		716	PUTBACK;
		717	cb = hv_fetch ((HV *)SvRV (coro_current), "_trace_sub_cb", sizeof ("_trace_sub_cb") - 1, 0);
		718	if (cb) call_sv (*cb, G_KEEPERR \| G_EVAL \| G_VOID \| G_DISCARD);
		719	SPAGAIN;
		720	FREETMPS;
		721	LEAVE;
		722	PL_runops = runops_trace;
		723	}
		724
		725	if (oldcop != PL_curcop)
		726	{
		727	oldcop = PL_curcop;
		728
		729	if (PL_curcop != &PL_compiling)
		730	{
		731	SV **cb;
		732
		733	if (oldcxix != cxstack_ix && cctx->flags & CC_TRACE_SUB)
		734	{
		735	PERL_CONTEXT *cx = &cxstack[cxstack_ix];
		736
		737	if (CxTYPE (cx) == CXt_SUB && oldcxix < cxstack_ix)
		738	{
		739	runops_proc_t old_runops = PL_runops;
		740	dSP;
		741	GV *gv = CvGV (cx->blk_sub.cv);
		742	SV *fullname = sv_2mortal (newSV (0));
		743
		744	if (isGV (gv))
		745	gv_efullname3 (fullname, gv, 0);
		746
		747	PL_runops = RUNOPS_DEFAULT;
		748	ENTER;
		749	SAVETMPS;
		750	EXTEND (SP, 3);
		751	PUSHMARK (SP);
		752	PUSHs (&PL_sv_yes);
		753	PUSHs (fullname);
		754	PUSHs (cx->blk_sub.hasargs ? sv_2mortal (newRV_inc ((SV *)cx->blk_sub.argarray)) : &PL_sv_undef);
		755	PUTBACK;
		756	cb = hv_fetch ((HV *)SvRV (coro_current), "_trace_sub_cb", sizeof ("_trace_sub_cb") - 1, 0);
		757	if (cb) call_sv (*cb, G_KEEPERR \| G_EVAL \| G_VOID \| G_DISCARD);
		758	SPAGAIN;
		759	FREETMPS;
		760	LEAVE;
		761	PL_runops = runops_trace;
		762	}
		763
		764	oldcxix = cxstack_ix;
		765	}
		766
		767	if (cctx->flags & CC_TRACE_LINE)
		768	{
		769	dSP;
		770
		771	PL_runops = RUNOPS_DEFAULT;
		772	ENTER;
		773	SAVETMPS;
		774	EXTEND (SP, 3);
		775	PL_runops = RUNOPS_DEFAULT;
		776	PUSHMARK (SP);
		777	PUSHs (sv_2mortal (newSVpv (OutCopFILE (oldcop), 0)));
		778	PUSHs (sv_2mortal (newSViv (CopLINE (oldcop))));
		779	PUTBACK;
		780	cb = hv_fetch ((HV *)SvRV (coro_current), "_trace_line_cb", sizeof ("_trace_line_cb") - 1, 0);
		781	if (cb) call_sv (*cb, G_KEEPERR \| G_EVAL \| G_VOID \| G_DISCARD);
		782	SPAGAIN;
		783	FREETMPS;
		784	LEAVE;
		785	PL_runops = runops_trace;
		786	}
		787	}
		788	}
		789	}
		790	}
		791
		792	TAINT_NOT;
		793	return 0;
		794	}
		795
		796	/* inject a fake call to Coro::State::_cctx_init into the execution */
		797	/* _cctx_init should be careful, as it could be called at almost any time */
		798	/* during execution of a perl program */
527	static void NOINLINE	799	static void NOINLINE
528	prepare_cctx (coro_cctx *cctx)	800	prepare_cctx (pTHX_ coro_cctx *cctx)
529	{	801	{
530	dSP;	802	dSP;
531	LOGOP myop;	803	LOGOP myop;
532		804
		805	PL_top_env = &PL_start_env;
		806
		807	if (cctx->flags & CC_TRACE)
		808	PL_runops = runops_trace;
		809
533	Zero (&myop, 1, LOGOP);	810	Zero (&myop, 1, LOGOP);
534	myop.op_next = PL_op;	811	myop.op_next = PL_op;
535	myop.op_flags = OPf_WANT_VOID;	812	myop.op_flags = OPf_WANT_VOID \| OPf_STACKED;
536
537	sv_setiv (get_sv ("Coro::State::_cctx", FALSE), PTR2IV (cctx));
538		813
539	PUSHMARK (SP);	814	PUSHMARK (SP);
		815	EXTEND (SP, 2);
		816	PUSHs (sv_2mortal (newSViv (PTR2IV (cctx))));
540	XPUSHs ((SV *)get_cv ("Coro::State::_cctx_init", FALSE));	817	PUSHs ((SV *)get_cv ("Coro::State::_cctx_init", FALSE));
541	PUTBACK;	818	PUTBACK;
		819	PL_op = (OP *)&myop;
542	PL_restartop = PL_ppaddr[OP_ENTERSUB](aTHX);	820	PL_op = PL_ppaddr[OP_ENTERSUB](aTHX);
543	SPAGAIN;	821	SPAGAIN;
544	}	822	}
545		823
		824	/*
		825	* this is a _very_ stripped down perl interpreter ;)
		826	*/
546	static void	827	static void
547	coro_run (void *arg)	828	coro_run (void *arg)
548	{	829	{
		830	dTHX;
		831
549	/* coro_run is the alternative epilogue of transfer() */	832	/* coro_run is the alternative tail of transfer(), so unlock here. */
550	UNLOCK;	833	UNLOCK;
551		834
		835	/* we now skip the entersub that lead to transfer() */
		836	PL_op = PL_op->op_next;
		837
		838	/* inject a fake subroutine call to cctx_init */
		839	prepare_cctx (aTHX_ (coro_cctx *)arg);
		840
		841	/* somebody or something will hit me for both perl_run and PL_restartop */
		842	PL_restartop = PL_op;
		843	perl_run (PL_curinterp);
		844
552	/*	845	/*
553	* this is a _very_ stripped down perl interpreter ;)	846	* If perl-run returns we assume exit() was being called or the coro
		847	* fell off the end, which seems to be the only valid (non-bug)
		848	* reason for perl_run to return. We try to exit by jumping to the
		849	* bootstrap-time "top" top_env, as we cannot restore the "main"
		850	* coroutine as Coro has no such concept
554	*/	851	*/
555	PL_top_env = &PL_start_env;	852	PL_top_env = main_top_env;
556		853	JMPENV_JUMP (2); /* I do not feel well about the hardcoded 2 at all */
557	/* inject call to cctx_init */
558	prepare_cctx ((coro_cctx *)arg);
559
560	/* somebody will hit me for both perl_run and PL_restartop */
561	perl_run (PL_curinterp);
562
563	fputs ("FATAL: C coroutine fell over the edge of the world, aborting. Did you call exit in a coroutine?\n", stderr);
564	abort ();
565	}	854	}
566		855
567	static coro_cctx *	856	static coro_cctx *
568	cctx_new ()	857	cctx_new ()
569	{	858	{
570	coro_cctx *cctx;	859	coro_cctx *cctx;
		860	void *stack_start;
		861	size_t stack_size;
571		862
572	++cctx_count;	863	++cctx_count;
573		864
574	New (0, cctx, 1, coro_cctx);	865	Newz (0, cctx, 1, coro_cctx);
575		866
576	#if HAVE_MMAP	867	#if HAVE_MMAP
577		868
578	cctx->ssize = ((STACKSIZE * sizeof (long) + PAGESIZE - 1) / PAGESIZE + STACKGUARD) * PAGESIZE;	869	cctx->ssize = ((coro_stacksize * sizeof (long) + PAGESIZE - 1) / PAGESIZE + CORO_STACKGUARD) * PAGESIZE;
579	/* mmap suppsedly does allocate-on-write for us */	870	/* mmap supposedly does allocate-on-write for us */
580	cctx->sptr = mmap (0, cctx->ssize, PROT_EXEC\|PROT_READ\|PROT_WRITE, MAP_PRIVATE\|MAP_ANONYMOUS, 0, 0);	871	cctx->sptr = mmap (0, cctx->ssize, PROT_EXEC\|PROT_READ\|PROT_WRITE, MAP_PRIVATE\|MAP_ANONYMOUS, 0, 0);
581		872
582	if (cctx->sptr == (void *)-1)	873	if (cctx->sptr != (void *)-1)
583	{
584	perror ("FATAL: unable to mmap stack for coroutine");
585	_exit (EXIT_FAILURE);
586	}	874	{
587
588	# if STACKGUARD	875	# if CORO_STACKGUARD
589	mprotect (cctx->sptr, STACKGUARD * PAGESIZE, PROT_NONE);	876	mprotect (cctx->sptr, CORO_STACKGUARD * PAGESIZE, PROT_NONE);
590	# endif	877	# endif
		878	stack_start = CORO_STACKGUARD * PAGESIZE + (char *)cctx->sptr;
		879	stack_size = cctx->ssize - CORO_STACKGUARD * PAGESIZE;
		880	cctx->flags \|= CC_MAPPED;
		881	}
		882	else
		883	#endif
		884	{
		885	cctx->ssize = coro_stacksize * (long)sizeof (long);
		886	New (0, cctx->sptr, coro_stacksize, long);
591		887
592	#else
593
594	cctx->ssize = STACKSIZE * (long)sizeof (long);
595	New (0, cctx->sptr, STACKSIZE, long);
596
597	if (!cctx->sptr)	888	if (!cctx->sptr)
598	{	889	{
599	perror ("FATAL: unable to malloc stack for coroutine");	890	perror ("FATAL: unable to allocate stack for coroutine");
600	_exit (EXIT_FAILURE);	891	_exit (EXIT_FAILURE);
601	}	892	}
602		893
603	#endif	894	stack_start = cctx->sptr;
		895	stack_size = cctx->ssize;
		896	}
604		897
605	#if USE_VALGRIND	898	REGISTER_STACK (cctx, (char )stack_start, (char )stack_start + stack_size);
606	cctx->valgrind_id = VALGRIND_STACK_REGISTER (
607	STACKGUARD * PAGESIZE + (char *)cctx->sptr,
608	cctx->ssize + (char *)cctx->sptr
609	);
610	#endif
611
612	coro_create (&cctx->cctx, coro_run, (void *)cctx, cctx->sptr, cctx->ssize);	899	coro_create (&cctx->cctx, coro_run, (void *)cctx, stack_start, stack_size);
613		900
614	return cctx;	901	return cctx;
615	}	902	}
616		903
617	static void	904	static void
618	cctx_free (coro_cctx *cctx)	905	cctx_destroy (coro_cctx *cctx)
619	{	906	{
620	if (!cctx)	907	if (!cctx)
621	return;	908	return;
622		909
623	--cctx_count;	910	--cctx_count;
624		911
625	#if USE_VALGRIND	912	#if CORO_USE_VALGRIND
626	VALGRIND_STACK_DEREGISTER (cctx->valgrind_id);	913	VALGRIND_STACK_DEREGISTER (cctx->valgrind_id);
627	#endif	914	#endif
628		915
629	#if HAVE_MMAP	916	#if HAVE_MMAP
		917	if (cctx->flags & CC_MAPPED)
630	munmap (cctx->sptr, cctx->ssize);	918	munmap (cctx->sptr, cctx->ssize);
631	#else	919	else
		920	#endif
632	Safefree (cctx->sptr);	921	Safefree (cctx->sptr);
633	#endif
634		922
635	Safefree (cctx);	923	Safefree (cctx);
636	}	924	}
637		925
638	static coro_cctx *	926	static coro_cctx *
639	cctx_get ()	927	cctx_get (pTHX)
640	{	928	{
641	coro_cctx *cctx;
642
643	if (cctx_first)	929	while (cctx_first)
644	{	930	{
		931	coro_cctx *cctx = cctx_first;
		932	cctx_first = cctx->next;
645	--cctx_idle;	933	--cctx_idle;
646	cctx = cctx_first;	934
647	cctx_first = cctx->next;	935	if (cctx->ssize >= coro_stacksize && !(cctx->flags & CC_NOREUSE))
648	}	936	return cctx;
649	else	937
650	{	938	cctx_destroy (cctx);
651	cctx = cctx_new ();
652	PL_op = PL_op->op_next;
653	}	939	}
654		940
655	return cctx;	941	return cctx_new ();
656	}	942	}
657		943
658	static void	944	static void
659	cctx_put (coro_cctx *cctx)	945	cctx_put (coro_cctx *cctx)
660	{	946	{
		947	/* free another cctx if overlimit */
		948	if (cctx_idle >= MAX_IDLE_CCTX)
		949	{
		950	coro_cctx *first = cctx_first;
		951	cctx_first = first->next;
		952	--cctx_idle;
		953
		954	cctx_destroy (first);
		955	}
		956
661	++cctx_idle;	957	++cctx_idle;
662	cctx->next = cctx_first;	958	cctx->next = cctx_first;
663	cctx_first = cctx;	959	cctx_first = cctx;
664	}	960	}
665		961
666	/* never call directly, always through the coro_state_transfer global variable */	962	/ coroutine switching ***************************************************/
		963
667	static void NOINLINE	964	static void NOINLINE
		965	transfer_check (pTHX_ struct coro prev, struct coro next)
		966	{
		967	if (prev != next)
		968	{
		969	if (!(prev->flags & (CF_RUNNING \| CF_NEW)))
		970	croak ("Coro::State::transfer called with non-running/new prev Coro::State, but can only transfer from running or new states");
		971
		972	if (next->flags & CF_RUNNING)
		973	croak ("Coro::State::transfer called with running next Coro::State, but can only transfer to inactive states");
		974
		975	if (next->flags & CF_DESTROYED)
		976	croak ("Coro::State::transfer called with destroyed next Coro::State, but can only transfer to inactive states");
		977
		978	if (PL_lex_state != LEX_NOTPARSING)
		979	croak ("Coro::State::transfer called while parsing, but this is not supported");
		980	}
		981	}
		982
		983	/* always use the TRANSFER macro */
		984	static void NOINLINE
668	transfer (struct coro prev, struct coro next, int flags)	985	transfer (pTHX_ struct coro prev, struct coro next)
669	{	986	{
670	dSTACKLEVEL;	987	dSTACKLEVEL;
671		988
672	/* sometimes transfer is only called to set idle_sp */	989	/* sometimes transfer is only called to set idle_sp */
673	if (flags == TRANSFER_SET_STACKLEVEL)	990	if (!next)
		991	{
674	((coro_cctx *)prev)->idle_sp = STACKLEVEL;	992	((coro_cctx *)prev)->idle_sp = STACKLEVEL;
		993	assert (((coro_cctx )prev)->idle_te = PL_top_env); / just for the side-effect when asserts are enabled */
		994	}
675	else if (prev != next)	995	else if (prev != next)
676	{	996	{
677	coro_cctx *prev__cctx;	997	coro_cctx *prev__cctx;
678		998
679	if (!prev->cctx)	999	if (prev->flags & CF_NEW)
680	{	1000	{
681	/* create a new empty context */	1001	/* create a new empty context */
682	Newz (0, prev->cctx, 1, coro_cctx);	1002	Newz (0, prev->cctx, 1, coro_cctx);
683	prev->cctx->inuse = 1;	1003	prev->flags &= ~CF_NEW;
684	prev->flags \|= CF_RUNNING;	1004	prev->flags \|= CF_RUNNING;
685	}	1005	}
686
687	assert ( prev->flags & CF_RUNNING);
688	assert (!next->flags & CF_RUNNING);
689		1006
690	prev->flags &= ~CF_RUNNING;	1007	prev->flags &= ~CF_RUNNING;
691	next->flags \|= CF_RUNNING;	1008	next->flags \|= CF_RUNNING;
692		1009
693	LOCK;	1010	LOCK;
694		1011
695	if (next->mainstack)	1012	if (next->flags & CF_NEW)
696	{	1013	{
697	/* coroutine already started */	1014	/* need to start coroutine */
698	SAVE (prev, flags);	1015	next->flags &= ~CF_NEW;
699	LOAD (next);	1016	/* first get rid of the old state */
		1017	save_perl (aTHX_ prev);
		1018	/* setup coroutine call */
		1019	coro_setup (aTHX_ next);
700	}	1020	}
701	else	1021	else
702	{	1022	{
703	/* need to start coroutine */	1023	/* coroutine already started */
704	/* first get rid of the old state */	1024	save_perl (aTHX_ prev);
705	SAVE (prev, -1);	1025	load_perl (aTHX_ next);
706	/* setup coroutine call */
707	setup_coro (next);
708	/* need a stack */
709	assert (!next->stack);
710	next->cctx = 0;
711	}	1026	}
712		1027
713	prev__cctx = prev->cctx;	1028	prev__cctx = prev->cctx;
714		1029
715	/* possibly "free" the cctx */	1030	/* possibly "free" the cctx */
716	if (prev__cctx->idle_sp == STACKLEVEL)	1031	if (prev__cctx->idle_sp == STACKLEVEL && !(prev__cctx->flags & CC_TRACE))
717	{	1032	{
718	assert (PL_top_env == prev__cctx->top_env);//D	1033	/* I assume that STACKLEVEL is a stronger indicator than PL_top_env changes */
		1034	assert (("ERROR: current top_env must equal previous top_env", PL_top_env == prev__cctx->idle_te));
		1035
		1036	prev->cctx = 0;
		1037
719	cctx_put (prev__cctx);	1038	cctx_put (prev__cctx);
720	prev->cctx = 0;
721	}	1039	}
722		1040
		1041	++next->usecount;
		1042
723	if (!next->cctx)	1043	if (!next->cctx)
724	next->cctx = cctx_get ();	1044	next->cctx = cctx_get (aTHX);
725		1045
726	if (prev__cctx != next->cctx)	1046	if (prev__cctx != next->cctx)
727	{	1047	{
728	assert ( prev__cctx->inuse);
729	assert (!next->cctx->inuse);
730
731	prev__cctx->inuse = 0;
732	next->cctx->inuse = 1;
733
734	prev__cctx->top_env = PL_top_env;	1048	prev__cctx->top_env = PL_top_env;
735	PL_top_env = next->cctx->top_env;	1049	PL_top_env = next->cctx->top_env;
736	coro_transfer (&prev__cctx->cctx, &next->cctx->cctx);	1050	coro_transfer (&prev__cctx->cctx, &next->cctx->cctx);
737	}	1051	}
738		1052
739	free_coro_mortal ();	1053	free_coro_mortal (aTHX);
740
741	UNLOCK;	1054	UNLOCK;
742	}	1055	}
743	}	1056	}
744		1057
745	struct transfer_args	1058	struct transfer_args
746	{	1059	{
747	struct coro prev, next;	1060	struct coro prev, next;
748	int flags;
749	};	1061	};
750		1062
751	#define TRANSFER(ta) transfer ((ta).prev, (ta).next, (ta).flags)	1063	#define TRANSFER(ta) transfer (aTHX_ (ta).prev, (ta).next)
		1064	#define TRANSFER_CHECK(ta) transfer_check (aTHX_ (ta).prev, (ta).next)
752		1065
		1066	/ high level stuff ******************************************************/
		1067
753	static void	1068	static int
754	coro_state_destroy (struct coro *coro)	1069	coro_state_destroy (pTHX_ struct coro *coro)
755	{	1070	{
756	if (coro->refcnt--)	1071	if (coro->flags & CF_DESTROYED)
757	return;	1072	return 0;
		1073
		1074	coro->flags \|= CF_DESTROYED;
		1075
		1076	if (coro->flags & CF_READY)
		1077	{
		1078	/* reduce nready, as destroying a ready coro effectively unreadies it */
		1079	/* alternative: look through all ready queues and remove the coro */
		1080	LOCK;
		1081	--coro_nready;
		1082	UNLOCK;
		1083	}
		1084	else
		1085	coro->flags \|= CF_READY; /* make sure it is NOT put into the readyqueue */
758		1086
759	if (coro->mainstack && coro->mainstack != main_mainstack)	1087	if (coro->mainstack && coro->mainstack != main_mainstack)
760	{	1088	{
761	struct coro temp;	1089	struct coro temp;
762		1090
763	SAVE ((&temp), TRANSFER_SAVE_ALL);	1091	if (coro->flags & CF_RUNNING)
764	LOAD (coro);	1092	croak ("FATAL: tried to destroy currently running coroutine");
765		1093
766	coro_destroy_stacks ();	1094	save_perl (aTHX_ &temp);
		1095	load_perl (aTHX_ coro);
767		1096
		1097	coro_destroy (aTHX_ coro);
		1098
768	LOAD ((&temp)); /* this will get rid of defsv etc.. */	1099	load_perl (aTHX_ &temp); /* this will get rid of defsv etc.. */
769		1100
770	coro->mainstack = 0;	1101	coro->mainstack = 0;
771	}	1102	}
772		1103
773	cctx_free (coro->cctx);	1104	cctx_destroy (coro->cctx);
774	SvREFCNT_dec (coro->args);	1105	SvREFCNT_dec (coro->args);
775	Safefree (coro);	1106
		1107	if (coro->next) coro->next->prev = coro->prev;
		1108	if (coro->prev) coro->prev->next = coro->next;
		1109	if (coro == coro_first) coro_first = coro->next;
		1110
		1111	return 1;
776	}	1112	}
777		1113
778	static int	1114	static int
779	coro_state_clear (pTHX_ SV sv, MAGIC mg)	1115	coro_state_free (pTHX_ SV sv, MAGIC mg)
780	{	1116	{
781	struct coro coro = (struct coro )mg->mg_ptr;	1117	struct coro coro = (struct coro )mg->mg_ptr;
782	mg->mg_ptr = 0;	1118	mg->mg_ptr = 0;
783		1119
		1120	coro->hv = 0;
		1121
		1122	if (--coro->refcnt < 0)
		1123	{
784	coro_state_destroy (coro);	1124	coro_state_destroy (aTHX_ coro);
		1125	Safefree (coro);
		1126	}
785		1127
786	return 0;	1128	return 0;
787	}	1129	}
788		1130
789	static int	1131	static int
…		…
796	return 0;	1138	return 0;
797	}	1139	}
798		1140
799	static MGVTBL coro_state_vtbl = {	1141	static MGVTBL coro_state_vtbl = {
800	0, 0, 0, 0,	1142	0, 0, 0, 0,
801	coro_state_clear,	1143	coro_state_free,
802	0,	1144	0,
803	#ifdef MGf_DUP	1145	#ifdef MGf_DUP
804	coro_state_dup,	1146	coro_state_dup,
805	#else	1147	#else
806	# define MGf_DUP 0	1148	# define MGf_DUP 0
807	#endif	1149	#endif
808	};	1150	};
809		1151
810	static struct coro *
811	SvSTATE (SV *coro)
812	{
813	HV *stash;
814	MAGIC *mg;
815
816	if (SvROK (coro))
817	coro = SvRV (coro);
818
819	stash = SvSTASH (coro);
820	if (stash != coro_stash && stash != coro_state_stash)
821	{
822	/* very slow, but rare, check */
823	if (!sv_derived_from (sv_2mortal (newRV_inc (coro)), "Coro::State"))
824	croak ("Coro::State object required");
825	}
826
827	mg = SvMAGIC (coro);
828	assert (mg->mg_type == PERL_MAGIC_ext);
829	return (struct coro *)mg->mg_ptr;
830	}
831
832	static void	1152	static void
833	prepare_transfer (struct transfer_args ta, SV prev, SV *next, int flags)	1153	prepare_transfer (pTHX_ struct transfer_args ta, SV prev_sv, SV *next_sv)
834	{	1154	{
835	ta->prev = SvSTATE (prev);	1155	ta->prev = SvSTATE (prev_sv);
836	ta->next = SvSTATE (next);	1156	ta->next = SvSTATE (next_sv);
837	ta->flags = flags;	1157	TRANSFER_CHECK (*ta);
838	}	1158	}
839		1159
840	static void	1160	static void
841	api_transfer (SV prev, SV next, int flags)	1161	api_transfer (SV prev_sv, SV next_sv)
842	{	1162	{
843	dTHX;	1163	dTHX;
844	struct transfer_args ta;	1164	struct transfer_args ta;
845		1165
846	prepare_transfer (&ta, prev, next, flags);	1166	prepare_transfer (aTHX_ &ta, prev_sv, next_sv);
847	TRANSFER (ta);	1167	TRANSFER (ta);
848	}	1168	}
849		1169
850	/ Coro ******************************************************************/	1170	/ Coro ******************************************************************/
851		1171
852	#define PRIO_MAX 3
853	#define PRIO_HIGH 1
854	#define PRIO_NORMAL 0
855	#define PRIO_LOW -1
856	#define PRIO_IDLE -3
857	#define PRIO_MIN -4
858
859	/* for Coro.pm */
860	static GV coro_current, coro_idle;
861	static AV *coro_ready [PRIO_MAX-PRIO_MIN+1];
862	static int coro_nready;
863
864	static void	1172	static void
865	coro_enq (SV *sv)	1173	coro_enq (pTHX_ SV *coro_sv)
866	{	1174	{
867	int prio;
868
869	if (SvTYPE (sv) != SVt_PVHV)
870	croak ("Coro::ready tried to enqueue something that is not a coroutine");
871
872	prio = SvSTATE (sv)->prio;
873
874	av_push (coro_ready [prio - PRIO_MIN], sv);	1175	av_push (coro_ready [SvSTATE (coro_sv)->prio - PRIO_MIN], coro_sv);
875	coro_nready++;
876	}	1176	}
877		1177
878	static SV *	1178	static SV *
879	coro_deq (int min_prio)	1179	coro_deq (pTHX_ int min_prio)
880	{	1180	{
881	int prio = PRIO_MAX - PRIO_MIN;	1181	int prio = PRIO_MAX - PRIO_MIN;
882		1182
883	min_prio -= PRIO_MIN;	1183	min_prio -= PRIO_MIN;
884	if (min_prio < 0)	1184	if (min_prio < 0)
885	min_prio = 0;	1185	min_prio = 0;
886		1186
887	for (prio = PRIO_MAX - PRIO_MIN + 1; --prio >= min_prio; )	1187	for (prio = PRIO_MAX - PRIO_MIN + 1; --prio >= min_prio; )
888	if (AvFILLp (coro_ready [prio]) >= 0)	1188	if (AvFILLp (coro_ready [prio]) >= 0)
889	{
890	coro_nready--;
891	return av_shift (coro_ready [prio]);	1189	return av_shift (coro_ready [prio]);
892	}
893		1190
894	return 0;	1191	return 0;
895	}	1192	}
896		1193
897	static int	1194	static int
898	api_ready (SV *coro_sv)	1195	api_ready (SV *coro_sv)
899	{	1196	{
		1197	dTHX;
900	struct coro *coro;	1198	struct coro *coro;
901		1199
902	if (SvROK (coro_sv))	1200	if (SvROK (coro_sv))
903	coro_sv = SvRV (coro_sv);	1201	coro_sv = SvRV (coro_sv);
904		1202
905	coro = SvSTATE (coro_sv);	1203	coro = SvSTATE (coro_sv);
		1204
906	if (coro->flags & CF_READY)	1205	if (coro->flags & CF_READY)
907	return 0;	1206	return 0;
908		1207
909	coro->flags \|= CF_READY;	1208	coro->flags \|= CF_READY;
910		1209
911	LOCK;	1210	LOCK;
912	coro_enq (SvREFCNT_inc (coro_sv));	1211	coro_enq (aTHX_ SvREFCNT_inc (coro_sv));
		1212	++coro_nready;
913	UNLOCK;	1213	UNLOCK;
914		1214
915	return 1;	1215	return 1;
916	}	1216	}
917		1217
918	static int	1218	static int
919	api_is_ready (SV *coro_sv)	1219	api_is_ready (SV *coro_sv)
920	{	1220	{
921	struct coro *coro;	1221	dTHX;
922
923	return !!(SvSTATE (coro_sv)->flags & CF_READY);	1222	return !!(SvSTATE (coro_sv)->flags & CF_READY);
924	}	1223	}
925		1224
926	static void	1225	static void
927	prepare_schedule (struct transfer_args *ta)	1226	prepare_schedule (pTHX_ struct transfer_args *ta)
928	{	1227	{
929	SV current, prev, *next;	1228	SV prev_sv, next_sv;
930
931	current = GvSV (coro_current);
932		1229
933	for (;;)	1230	for (;;)
934	{	1231	{
935	LOCK;	1232	LOCK;
936	next = coro_deq (PRIO_MIN);	1233	next_sv = coro_deq (aTHX_ PRIO_MIN);
		1234
		1235	/* nothing to schedule: call the idle handler */
		1236	if (!next_sv)
		1237	{
		1238	dSP;
		1239	UNLOCK;
		1240
		1241	ENTER;
		1242	SAVETMPS;
		1243
		1244	PUSHMARK (SP);
		1245	PUTBACK;
		1246	call_sv (get_sv ("Coro::idle", FALSE), G_DISCARD);
		1247
		1248	FREETMPS;
		1249	LEAVE;
		1250	continue;
		1251	}
		1252
		1253	ta->next = SvSTATE (next_sv);
		1254
		1255	/* cannot transfer to destroyed coros, skip and look for next */
		1256	if (ta->next->flags & CF_DESTROYED)
		1257	{
		1258	UNLOCK;
		1259	SvREFCNT_dec (next_sv);
		1260	/* coro_nready is already taken care of by destroy */
		1261	continue;
		1262	}
		1263
		1264	--coro_nready;
937	UNLOCK;	1265	UNLOCK;
938
939	if (next)
940	break;	1266	break;
941
942	{
943	dSP;
944
945	ENTER;
946	SAVETMPS;
947
948	PUSHMARK (SP);
949	PUTBACK;
950	call_sv (GvSV (coro_idle), G_DISCARD);
951
952	FREETMPS;
953	LEAVE;
954	}	1267	}
955	}
956
957	prev = SvRV (current);
958	SvRV (current) = next;
959		1268
960	/* free this only after the transfer */	1269	/* free this only after the transfer */
		1270	prev_sv = SvRV (coro_current);
		1271	ta->prev = SvSTATE (prev_sv);
		1272	TRANSFER_CHECK (*ta);
		1273	assert (ta->next->flags & CF_READY);
		1274	ta->next->flags &= ~CF_READY;
		1275	SvRV_set (coro_current, next_sv);
		1276
961	LOCK;	1277	LOCK;
962	free_coro_mortal ();	1278	free_coro_mortal (aTHX);
		1279	coro_mortal = prev_sv;
963	UNLOCK;	1280	UNLOCK;
964	coro_mortal = prev;
965
966	ta->prev = SvSTATE (prev);
967	ta->next = SvSTATE (next);
968	ta->flags = TRANSFER_SAVE_ALL;
969
970	ta->next->flags &= ~CF_READY;
971	}	1281	}
972		1282
973	static void	1283	static void
974	prepare_cede (struct transfer_args *ta)	1284	prepare_cede (pTHX_ struct transfer_args *ta)
975	{	1285	{
976	api_ready (GvSV (coro_current));	1286	api_ready (coro_current);
977
978	prepare_schedule (ta);	1287	prepare_schedule (aTHX_ ta);
		1288	}
		1289
		1290	static int
		1291	prepare_cede_notself (pTHX_ struct transfer_args *ta)
		1292	{
		1293	if (coro_nready)
		1294	{
		1295	SV *prev = SvRV (coro_current);
		1296	prepare_schedule (aTHX_ ta);
		1297	api_ready (prev);
		1298	return 1;
		1299	}
		1300	else
		1301	return 0;
979	}	1302	}
980		1303
981	static void	1304	static void
982	api_schedule (void)	1305	api_schedule (void)
983	{	1306	{
984	dTHX;	1307	dTHX;
985	struct transfer_args ta;	1308	struct transfer_args ta;
986		1309
987	prepare_schedule (&ta);	1310	prepare_schedule (aTHX_ &ta);
988	TRANSFER (ta);	1311	TRANSFER (ta);
989	}	1312	}
990		1313
991	static void	1314	static int
992	api_cede (void)	1315	api_cede (void)
993	{	1316	{
994	dTHX;	1317	dTHX;
995	struct transfer_args ta;	1318	struct transfer_args ta;
996		1319
997	prepare_cede (&ta);	1320	prepare_cede (aTHX_ &ta);
		1321
		1322	if (ta.prev != ta.next)
		1323	{
998	TRANSFER (ta);	1324	TRANSFER (ta);
		1325	return 1;
		1326	}
		1327	else
		1328	return 0;
999	}	1329	}
1000		1330
		1331	static int
		1332	api_cede_notself (void)
		1333	{
		1334	dTHX;
		1335	struct transfer_args ta;
		1336
		1337	if (prepare_cede_notself (aTHX_ &ta))
		1338	{
		1339	TRANSFER (ta);
		1340	return 1;
		1341	}
		1342	else
		1343	return 0;
		1344	}
		1345
		1346	static void
		1347	api_trace (SV *coro_sv, int flags)
		1348	{
		1349	dTHX;
		1350	struct coro *coro = SvSTATE (coro_sv);
		1351
		1352	if (flags & CC_TRACE)
		1353	{
		1354	if (!coro->cctx)
		1355	coro->cctx = cctx_new ();
		1356	else if (!(coro->cctx->flags & CC_TRACE))
		1357	croak ("cannot enable tracing on coroutine with custom stack");
		1358
		1359	coro->cctx->flags \|= CC_NOREUSE \| (flags & (CC_TRACE \| CC_TRACE_ALL));
		1360	}
		1361	else if (coro->cctx && coro->cctx->flags & CC_TRACE)
		1362	{
		1363	coro->cctx->flags &= ~(CC_TRACE \| CC_TRACE_ALL);
		1364
		1365	if (coro->flags & CF_RUNNING)
		1366	PL_runops = RUNOPS_DEFAULT;
		1367	else
		1368	coro->runops = RUNOPS_DEFAULT;
		1369	}
		1370	}
		1371
1001	MODULE = Coro::State PACKAGE = Coro::State	1372	MODULE = Coro::State PACKAGE = Coro::State PREFIX = api_
1002		1373
1003	PROTOTYPES: DISABLE	1374	PROTOTYPES: DISABLE
1004		1375
1005	BOOT:	1376	BOOT:
1006	{	1377	{
1007	#ifdef USE_ITHREADS	1378	#ifdef USE_ITHREADS
1008	MUTEX_INIT (&coro_mutex);	1379	MUTEX_INIT (&coro_mutex);
1009	#endif	1380	#endif
1010	BOOT_PAGESIZE;	1381	BOOT_PAGESIZE;
1011		1382
		1383	irsgv = gv_fetchpv ("/", 1, SVt_PV);
		1384
1012	coro_state_stash = gv_stashpv ("Coro::State", TRUE);	1385	coro_state_stash = gv_stashpv ("Coro::State", TRUE);
1013		1386
1014	newCONSTSUB (coro_state_stash, "SAVE_DEFAV", newSViv (TRANSFER_SAVE_DEFAV));	1387	newCONSTSUB (coro_state_stash, "CC_TRACE" , newSViv (CC_TRACE));
1015	newCONSTSUB (coro_state_stash, "SAVE_DEFSV", newSViv (TRANSFER_SAVE_DEFSV));	1388	newCONSTSUB (coro_state_stash, "CC_TRACE_SUB" , newSViv (CC_TRACE_SUB));
1016	newCONSTSUB (coro_state_stash, "SAVE_ERRSV", newSViv (TRANSFER_SAVE_ERRSV));	1389	newCONSTSUB (coro_state_stash, "CC_TRACE_LINE", newSViv (CC_TRACE_LINE));
		1390	newCONSTSUB (coro_state_stash, "CC_TRACE_ALL" , newSViv (CC_TRACE_ALL));
1017		1391
1018	main_mainstack = PL_mainstack;	1392	main_mainstack = PL_mainstack;
		1393	main_top_env = PL_top_env;
		1394
		1395	while (main_top_env->je_prev)
		1396	main_top_env = main_top_env->je_prev;
1019		1397
1020	coroapi.ver = CORO_API_VERSION;	1398	coroapi.ver = CORO_API_VERSION;
1021	coroapi.transfer = api_transfer;	1399	coroapi.transfer = api_transfer;
1022		1400
1023	assert (("PRIO_NORMAL must be 0", !PRIO_NORMAL));	1401	assert (("PRIO_NORMAL must be 0", !PRIO_NORMAL));
…		…
1030	struct coro *coro;	1408	struct coro *coro;
1031	HV *hv;	1409	HV *hv;
1032	int i;	1410	int i;
1033		1411
1034	Newz (0, coro, 1, struct coro);	1412	Newz (0, coro, 1, struct coro);
1035	coro->args = newAV ();	1413	coro->args = newAV ();
		1414	coro->flags = CF_NEW;
1036		1415
		1416	if (coro_first) coro_first->prev = coro;
		1417	coro->next = coro_first;
		1418	coro_first = coro;
		1419
1037	hv = newHV ();	1420	coro->hv = hv = newHV ();
1038	sv_magicext ((SV )hv, 0, PERL_MAGIC_ext, &coro_state_vtbl, (char )coro, 0)->mg_flags \|= MGf_DUP;	1421	sv_magicext ((SV )hv, 0, PERL_MAGIC_ext, &coro_state_vtbl, (char )coro, 0)->mg_flags \|= MGf_DUP;
1039	RETVAL = sv_bless (newRV_noinc ((SV *)hv), gv_stashpv (klass, 1));	1422	RETVAL = sv_bless (newRV_noinc ((SV *)hv), gv_stashpv (klass, 1));
1040		1423
1041	for (i = 1; i < items; i++)	1424	for (i = 1; i < items; i++)
1042	av_push (coro->args, newSVsv (ST (i)));	1425	av_push (coro->args, newSVsv (ST (i)));
1043	}	1426	}
1044	OUTPUT:	1427	OUTPUT:
1045	RETVAL	1428	RETVAL
1046		1429
		1430	# these not obviously related functions are all rolled into the same xs
		1431	# function to increase chances that they all will call transfer with the same
		1432	# stack offset
1047	void	1433	void
1048	_set_stacklevel (...)	1434	_set_stacklevel (...)
1049	ALIAS:	1435	ALIAS:
1050	Coro::State::transfer = 1	1436	Coro::State::transfer = 1
1051	Coro::schedule = 2	1437	Coro::schedule = 2
1052	Coro::cede = 3	1438	Coro::cede = 3
1053	Coro::Cont::yield = 4	1439	Coro::cede_notself = 4
1054	CODE:	1440	CODE:
1055	{	1441	{
1056	struct transfer_args ta;	1442	struct transfer_args ta;
1057		1443
1058	switch (ix)	1444	switch (ix)
1059	{	1445	{
1060	case 0:	1446	case 0:
1061	ta.prev = (struct coro )INT2PTR (coro_cctx , SvIV (ST (0)));	1447	ta.prev = (struct coro )INT2PTR (coro_cctx , SvIV (ST (0)));
1062	ta.next = 0;	1448	ta.next = 0;
1063	ta.flags = TRANSFER_SET_STACKLEVEL;
1064	break;	1449	break;
1065		1450
1066	case 1:	1451	case 1:
1067	if (items != 3)	1452	if (items != 2)
1068	croak ("Coro::State::transfer(prev,next,flags) expects three arguments, not %d", items);	1453	croak ("Coro::State::transfer (prev,next) expects two arguments, not %d", items);
1069		1454
1070	prepare_transfer (&ta, ST (0), ST (1), SvIV (ST (2)));	1455	prepare_transfer (aTHX_ &ta, ST (0), ST (1));
1071	break;	1456	break;
1072		1457
1073	case 2:	1458	case 2:
1074	prepare_schedule (&ta);	1459	prepare_schedule (aTHX_ &ta);
1075	break;	1460	break;
1076		1461
1077	case 3:	1462	case 3:
1078	prepare_cede (&ta);	1463	prepare_cede (aTHX_ &ta);
1079	break;	1464	break;
1080		1465
1081	case 4:	1466	case 4:
1082	{	1467	if (!prepare_cede_notself (aTHX_ &ta))
1083	SV *yieldstack;	1468	XSRETURN_EMPTY;
1084	SV *sv;
1085	AV *defav = GvAV (PL_defgv);
1086		1469
1087	yieldstack = *hv_fetch (
1088	(HV *)SvRV (GvSV (coro_current)),
1089	"yieldstack", sizeof ("yieldstack") - 1,
1090	0
1091	);
1092
1093	/* set up @_ -- ugly */
1094	av_clear (defav);
1095	av_fill (defav, items - 1);
1096	while (items--)
1097	av_store (defav, items, SvREFCNT_inc (ST(items)));
1098
1099	sv = av_pop ((AV *)SvRV (yieldstack));
1100	ta.prev = SvSTATE (av_fetch ((AV )SvRV (sv), 0, 0));
1101	ta.next = SvSTATE (av_fetch ((AV )SvRV (sv), 1, 0));
1102	ta.flags = 0;
1103	SvREFCNT_dec (sv);
1104	}
1105	break;	1470	break;
1106
1107	}	1471	}
1108		1472
		1473	BARRIER;
1109	TRANSFER (ta);	1474	TRANSFER (ta);
1110	}
1111		1475
1112	void	1476	if (GIMME_V != G_VOID && ta.next != ta.prev)
1113	_clone_state_from (SV dst, SV src)	1477	XSRETURN_YES;
		1478	}
		1479
		1480	bool
		1481	_destroy (SV *coro_sv)
1114	CODE:	1482	CODE:
1115	{	1483	RETVAL = coro_state_destroy (aTHX_ SvSTATE (coro_sv));
1116	struct coro *coro_src = SvSTATE (src);	1484	OUTPUT:
1117		1485	RETVAL
1118	sv_unmagic (SvRV (dst), PERL_MAGIC_ext);
1119
1120	++coro_src->refcnt;
1121	sv_magicext (SvRV (dst), 0, PERL_MAGIC_ext, &coro_state_vtbl, (char *)coro_src, 0)->mg_flags \|= MGf_DUP;
1122	}
1123		1486
1124	void	1487	void
1125	_exit (code)	1488	_exit (code)
1126	int code	1489	int code
1127	PROTOTYPE: $	1490	PROTOTYPE: $
1128	CODE:	1491	CODE:
1129	_exit (code);	1492	_exit (code);
1130		1493
1131	int	1494	int
		1495	cctx_stacksize (int new_stacksize = 0)
		1496	CODE:
		1497	RETVAL = coro_stacksize;
		1498	if (new_stacksize)
		1499	coro_stacksize = new_stacksize;
		1500	OUTPUT:
		1501	RETVAL
		1502
		1503	int
1132	cctx_count ()	1504	cctx_count ()
1133	CODE:	1505	CODE:
1134	RETVAL = cctx_count;	1506	RETVAL = cctx_count;
1135	OUTPUT:	1507	OUTPUT:
1136	RETVAL	1508	RETVAL
…		…
1140	CODE:	1512	CODE:
1141	RETVAL = cctx_idle;	1513	RETVAL = cctx_idle;
1142	OUTPUT:	1514	OUTPUT:
1143	RETVAL	1515	RETVAL
1144		1516
		1517	void
		1518	list ()
		1519	PPCODE:
		1520	{
		1521	struct coro *coro;
		1522	for (coro = coro_first; coro; coro = coro->next)
		1523	if (coro->hv)
		1524	XPUSHs (sv_2mortal (newRV_inc ((SV *)coro->hv)));
		1525	}
		1526
		1527	void
		1528	call (Coro::State coro, SV *coderef)
		1529	ALIAS:
		1530	eval = 1
		1531	CODE:
		1532	{
		1533	if (coro->mainstack)
		1534	{
		1535	struct coro temp;
		1536	Zero (&temp, 1, struct coro);
		1537
		1538	if (!(coro->flags & CF_RUNNING))
		1539	{
		1540	save_perl (aTHX_ &temp);
		1541	load_perl (aTHX_ coro);
		1542	}
		1543
		1544	{
		1545	dSP;
		1546	ENTER;
		1547	SAVETMPS;
		1548	PUSHMARK (SP);
		1549	PUTBACK;
		1550	if (ix)
		1551	eval_sv (coderef, 0);
		1552	else
		1553	call_sv (coderef, G_KEEPERR \| G_EVAL \| G_VOID \| G_DISCARD);
		1554	SPAGAIN;
		1555	FREETMPS;
		1556	LEAVE;
		1557	PUTBACK;
		1558	}
		1559
		1560	if (!(coro->flags & CF_RUNNING))
		1561	{
		1562	save_perl (aTHX_ coro);
		1563	load_perl (aTHX_ &temp);
		1564	}
		1565	}
		1566	}
		1567
		1568	SV *
		1569	is_ready (Coro::State coro)
		1570	PROTOTYPE: $
		1571	ALIAS:
		1572	is_ready = CF_READY
		1573	is_running = CF_RUNNING
		1574	is_new = CF_NEW
		1575	is_destroyed = CF_DESTROYED
		1576	CODE:
		1577	RETVAL = boolSV (coro->flags & ix);
		1578	OUTPUT:
		1579	RETVAL
		1580
		1581	void
		1582	api_trace (SV *coro, int flags = CC_TRACE \| CC_TRACE_SUB)
		1583
		1584	SV *
		1585	has_stack (Coro::State coro)
		1586	PROTOTYPE: $
		1587	CODE:
		1588	RETVAL = boolSV (!!coro->cctx);
		1589	OUTPUT:
		1590	RETVAL
		1591
		1592	int
		1593	is_traced (Coro::State coro)
		1594	PROTOTYPE: $
		1595	CODE:
		1596	RETVAL = (coro->cctx ? coro->cctx->flags : 0) & CC_TRACE_ALL;
		1597	OUTPUT:
		1598	RETVAL
		1599
		1600	IV
		1601	rss (Coro::State coro)
		1602	PROTOTYPE: $
		1603	ALIAS:
		1604	usecount = 1
		1605	CODE:
		1606	switch (ix)
		1607	{
		1608	case 0: RETVAL = coro_rss (aTHX_ coro); break;
		1609	case 1: RETVAL = coro->usecount; break;
		1610	}
		1611	OUTPUT:
		1612	RETVAL
		1613
		1614
1145	MODULE = Coro::State PACKAGE = Coro	1615	MODULE = Coro::State PACKAGE = Coro
1146		1616
1147	BOOT:	1617	BOOT:
1148	{	1618	{
1149	int i;	1619	int i;
		1620
		1621	sv_pool_rss = get_sv ("Coro::POOL_RSS" , TRUE);
		1622	sv_pool_size = get_sv ("Coro::POOL_SIZE" , TRUE);
		1623	av_async_pool = get_av ("Coro::async_pool", TRUE);
		1624
		1625	coro_current = get_sv ("Coro::current", FALSE);
		1626	SvREADONLY_on (coro_current);
1150		1627
1151	coro_stash = gv_stashpv ("Coro", TRUE);	1628	coro_stash = gv_stashpv ("Coro", TRUE);
1152		1629
1153	newCONSTSUB (coro_stash, "PRIO_MAX", newSViv (PRIO_MAX));	1630	newCONSTSUB (coro_stash, "PRIO_MAX", newSViv (PRIO_MAX));
1154	newCONSTSUB (coro_stash, "PRIO_HIGH", newSViv (PRIO_HIGH));	1631	newCONSTSUB (coro_stash, "PRIO_HIGH", newSViv (PRIO_HIGH));
1155	newCONSTSUB (coro_stash, "PRIO_NORMAL", newSViv (PRIO_NORMAL));	1632	newCONSTSUB (coro_stash, "PRIO_NORMAL", newSViv (PRIO_NORMAL));
1156	newCONSTSUB (coro_stash, "PRIO_LOW", newSViv (PRIO_LOW));	1633	newCONSTSUB (coro_stash, "PRIO_LOW", newSViv (PRIO_LOW));
1157	newCONSTSUB (coro_stash, "PRIO_IDLE", newSViv (PRIO_IDLE));	1634	newCONSTSUB (coro_stash, "PRIO_IDLE", newSViv (PRIO_IDLE));
1158	newCONSTSUB (coro_stash, "PRIO_MIN", newSViv (PRIO_MIN));	1635	newCONSTSUB (coro_stash, "PRIO_MIN", newSViv (PRIO_MIN));
1159		1636
1160	coro_current = gv_fetchpv ("Coro::current", TRUE, SVt_PV);
1161	coro_idle = gv_fetchpv ("Coro::idle" , TRUE, SVt_PV);
1162
1163	for (i = PRIO_MAX - PRIO_MIN + 1; i--; )	1637	for (i = PRIO_MAX - PRIO_MIN + 1; i--; )
1164	coro_ready[i] = newAV ();	1638	coro_ready[i] = newAV ();
1165		1639
1166	{	1640	{
1167	SV *sv = perl_get_sv("Coro::API", 1);	1641	SV *sv = perl_get_sv("Coro::API", 1);
1168		1642
1169	coroapi.schedule = api_schedule;	1643	coroapi.schedule = api_schedule;
1170	coroapi.cede = api_cede;	1644	coroapi.cede = api_cede;
		1645	coroapi.cede_notself = api_cede_notself;
1171	coroapi.ready = api_ready;	1646	coroapi.ready = api_ready;
1172	coroapi.is_ready = api_is_ready;	1647	coroapi.is_ready = api_is_ready;
1173	coroapi.nready = &coro_nready;	1648	coroapi.nready = &coro_nready;
1174	coroapi.current = coro_current;	1649	coroapi.current = coro_current;
1175		1650
1176	GCoroAPI = &coroapi;	1651	GCoroAPI = &coroapi;
1177	sv_setiv (sv, (IV)&coroapi);	1652	sv_setiv (sv, (IV)&coroapi);
1178	SvREADONLY_on (sv);	1653	SvREADONLY_on (sv);
1179	}	1654	}
1180	}	1655	}
		1656
		1657	void
		1658	_set_current (SV *current)
		1659	PROTOTYPE: $
		1660	CODE:
		1661	SvREFCNT_dec (SvRV (coro_current));
		1662	SvRV_set (coro_current, SvREFCNT_inc (SvRV (current)));
1181		1663
1182	int	1664	int
1183	prio (Coro::State coro, int newprio = 0)	1665	prio (Coro::State coro, int newprio = 0)
1184	ALIAS:	1666	ALIAS:
1185	nice = 1	1667	nice = 1
…		…
1188	RETVAL = coro->prio;	1670	RETVAL = coro->prio;
1189		1671
1190	if (items > 1)	1672	if (items > 1)
1191	{	1673	{
1192	if (ix)	1674	if (ix)
1193	newprio += coro->prio;	1675	newprio = coro->prio - newprio;
1194		1676
1195	if (newprio < PRIO_MIN) newprio = PRIO_MIN;	1677	if (newprio < PRIO_MIN) newprio = PRIO_MIN;
1196	if (newprio > PRIO_MAX) newprio = PRIO_MAX;	1678	if (newprio > PRIO_MAX) newprio = PRIO_MAX;
1197		1679
1198	coro->prio = newprio;	1680	coro->prio = newprio;
1199	}	1681	}
1200	}	1682	}
		1683	OUTPUT:
		1684	RETVAL
1201		1685
1202	SV *	1686	SV *
1203	ready (SV *self)	1687	ready (SV *self)
1204	PROTOTYPE: $	1688	PROTOTYPE: $
1205	CODE:	1689	CODE:
1206	RETVAL = boolSV (api_ready (self));	1690	RETVAL = boolSV (api_ready (self));
1207	OUTPUT:	1691	OUTPUT:
1208	RETVAL	1692	RETVAL
1209		1693
1210	SV *
1211	is_ready (SV *self)
1212	PROTOTYPE: $
1213	CODE:
1214	RETVAL = boolSV (api_is_ready (self));
1215	OUTPUT:
1216	RETVAL
1217
1218	int	1694	int
1219	nready (...)	1695	nready (...)
1220	PROTOTYPE:	1696	PROTOTYPE:
1221	CODE:	1697	CODE:
1222	RETVAL = coro_nready;	1698	RETVAL = coro_nready;
1223	OUTPUT:	1699	OUTPUT:
1224	RETVAL	1700	RETVAL
1225		1701
		1702	# for async_pool speedup
		1703	void
		1704	_pool_1 (SV *cb)
		1705	CODE:
		1706	{
		1707	struct coro *coro = SvSTATE (coro_current);
		1708	HV hv = (HV )SvRV (coro_current);
		1709	AV *defav = GvAV (PL_defgv);
		1710	SV *invoke = hv_delete (hv, "_invoke", sizeof ("_invoke") - 1, 0);
		1711	AV *invoke_av;
		1712	int i, len;
		1713
		1714	if (!invoke)
		1715	croak ("\3terminate\2\n");
		1716
		1717	SvREFCNT_dec (coro->saved_deffh);
		1718	coro->saved_deffh = SvREFCNT_inc ((SV *)PL_defoutgv);
		1719
		1720	hv_store (hv, "desc", sizeof ("desc") - 1,
		1721	newSVpvn ("[async_pool]", sizeof ("[async_pool]") - 1), 0);
		1722
		1723	invoke_av = (AV *)SvRV (invoke);
		1724	len = av_len (invoke_av);
		1725
		1726	sv_setsv (cb, AvARRAY (invoke_av)[0]);
		1727
		1728	if (len > 0)
		1729	{
		1730	av_fill (defav, len - 1);
		1731	for (i = 0; i < len; ++i)
		1732	av_store (defav, i, SvREFCNT_inc (AvARRAY (invoke_av)[i + 1]));
		1733	}
		1734
		1735	SvREFCNT_dec (invoke);
		1736	}
		1737
		1738	void
		1739	_pool_2 (SV *cb)
		1740	CODE:
		1741	{
		1742	struct coro *coro = SvSTATE (coro_current);
		1743
		1744	sv_setsv (cb, &PL_sv_undef);
		1745
		1746	SvREFCNT_dec ((SV )PL_defoutgv); PL_defoutgv = (GV )coro->saved_deffh;
		1747	coro->saved_deffh = 0;
		1748
		1749	if (coro_rss (aTHX_ coro) > SvIV (sv_pool_rss)
		1750	\|\| av_len (av_async_pool) + 1 >= SvIV (sv_pool_size))
		1751	croak ("\3terminate\2\n");
		1752
		1753	av_clear (GvAV (PL_defgv));
		1754	hv_store ((HV *)SvRV (coro_current), "desc", sizeof ("desc") - 1,
		1755	newSVpvn ("[async_pool idle]", sizeof ("[async_pool idle]") - 1), 0);
		1756
		1757	coro->prio = 0;
		1758
		1759	if (coro->cctx && (coro->cctx->flags & CC_TRACE))
		1760	api_trace (coro_current, 0);
		1761
		1762	av_push (av_async_pool, newSVsv (coro_current));
		1763	}
		1764
		1765
1226	MODULE = Coro::State PACKAGE = Coro::AIO	1766	MODULE = Coro::State PACKAGE = Coro::AIO
1227		1767
1228	SV *	1768	SV *
1229	_get_state ()	1769	_get_state ()
1230	CODE:	1770	CODE:
1231	{	1771	{
1232	struct {	1772	struct io_state *data;
1233	int errorno;
1234	int laststype;
1235	int laststatval;
1236	Stat_t statcache;
1237	} data;
1238		1773
		1774	RETVAL = newSV (sizeof (struct io_state));
		1775	data = (struct io_state *)SvPVX (RETVAL);
		1776	SvCUR_set (RETVAL, sizeof (struct io_state));
		1777	SvPOK_only (RETVAL);
		1778
1239	data.errorno = errno;	1779	data->errorno = errno;
1240	data.laststype = PL_laststype;	1780	data->laststype = PL_laststype;
1241	data.laststatval = PL_laststatval;	1781	data->laststatval = PL_laststatval;
1242	data.statcache = PL_statcache;	1782	data->statcache = PL_statcache;
1243
1244	RETVAL = newSVpvn ((char *)&data, sizeof data);
1245	}	1783	}
1246	OUTPUT:	1784	OUTPUT:
1247	RETVAL	1785	RETVAL
1248		1786
1249	void	1787	void
1250	_set_state (char *data_)	1788	_set_state (char *data_)
1251	PROTOTYPE: $	1789	PROTOTYPE: $
1252	CODE:	1790	CODE:
1253	{	1791	{
1254	struct {	1792	struct io_state data = (void )data_;
1255	int errorno;
1256	int laststype;
1257	int laststatval;
1258	Stat_t statcache;
1259	} data = (void )data_;
1260		1793
1261	errno = data->errorno;	1794	errno = data->errorno;
1262	PL_laststype = data->laststype;	1795	PL_laststype = data->laststype;
1263	PL_laststatval = data->laststatval;	1796	PL_laststatval = data->laststatval;
1264	PL_statcache = data->statcache;	1797	PL_statcache = data->statcache;
1265	}	1798	}
		1799

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Comparing Coro/Coro/State.xs (file contents): Revision 1.111 by root, Thu Nov 30 18:21:14 2006 UTC vs. Revision 1.187 by root, Fri Oct 5 20:31:18 2007 UTC

Diff Legend

Comparing Coro/Coro/State.xs (file contents):
Revision 1.111 by root, Thu Nov 30 18:21:14 2006 UTC vs.
Revision 1.187 by root, Fri Oct 5 20:31:18 2007 UTC