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

Comparing Coro/Coro/State.xs (file contents):
Revision 1.128 by root, Fri Dec 22 04:22:28 2006 UTC vs.
Revision 1.174 by root, Sun Sep 30 13:43:18 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
31	#else	33	#else
32	# define PAGESIZE 0	34	# define PAGESIZE 0
33	# define BOOT_PAGESIZE (void)0	35	# define BOOT_PAGESIZE (void)0
34	#endif	36	#endif
35		37
36	#if USE_VALGRIND	38	#if CORO_USE_VALGRIND
37	# include <valgrind/valgrind.h>	39	# include <valgrind/valgrind.h>
		40	# define REGISTER_STACK(cctx,start,end) (cctx)->valgrind_id = VALGRIND_STACK_REGISTER ((start), (end))
		41	#else
		42	# define REGISTER_STACK(cctx,start,end)
38	#endif	43	#endif
39		44
40	/* the maximum number of idle cctx that will be pooled */	45	/* the maximum number of idle cctx that will be pooled */
41	#define MAX_IDLE_CCTX 8	46	#define MAX_IDLE_CCTX 8
42		47
…		…
71	#ifndef SvRV_set	76	#ifndef SvRV_set
72	# define SvRV_set(s,v) SvRV(s) = (v)	77	# define SvRV_set(s,v) SvRV(s) = (v)
73	#endif	78	#endif
74		79
75	#if !__i386 && !__x86_64 && !__powerpc && !__m68k && !__alpha && !__mips && !__sparc64	80	#if !__i386 && !__x86_64 && !__powerpc && !__m68k && !__alpha && !__mips && !__sparc64
76	# undef STACKGUARD	81	# undef CORO_STACKGUARD
77	#endif	82	#endif
78		83
79	#ifndef STACKGUARD	84	#ifndef CORO_STACKGUARD
80	# define STACKGUARD 0	85	# define CORO_STACKGUARD 0
81	#endif	86	#endif
82		87
83	/* prefer perl internal functions over our own? */	88	/* prefer perl internal functions over our own? */
84	#ifndef PREFER_PERL_FUNCTIONS	89	#ifndef CORO_PREFER_PERL_FUNCTIONS
85	# define PREFER_PERL_FUNCTIONS 0	90	# define CORO_PREFER_PERL_FUNCTIONS 0
86	#endif	91	#endif
87		92
88	/* The next macro should declare a variable stacklevel that contains and approximation	93	/* The next macros try to return the current stack pointer, in an as
89	* to the current C stack pointer. Its property is that it changes with each call	94	* portable way as possible. */
90	* and should be unique. */
91	#define dSTACKLEVEL int stacklevel	95	#define dSTACKLEVEL volatile char stacklevel
92	#define STACKLEVEL ((void *)&stacklevel)	96	#define STACKLEVEL ((void *)&stacklevel)
93		97
94	#define IN_DESTRUCT (PL_main_cv == Nullcv)	98	#define IN_DESTRUCT (PL_main_cv == Nullcv)
95		99
96	#if __GNUC__ >= 3	100	#if __GNUC__ >= 3
97	# define attribute(x) __attribute__(x)	101	# define attribute(x) __attribute__(x)
		102	# define BARRIER __asm__ __volatile__ ("" : : : "memory")
98	#else	103	#else
99	# define attribute(x)	104	# define attribute(x)
		105	# define BARRIER
100	#endif	106	#endif
101		107
102	#define NOINLINE attribute ((noinline))	108	#define NOINLINE attribute ((noinline))
103		109
104	#include "CoroAPI.h"	110	#include "CoroAPI.h"
…		…
110	#else	116	#else
111	# define LOCK (void)0	117	# define LOCK (void)0
112	# define UNLOCK (void)0	118	# define UNLOCK (void)0
113	#endif	119	#endif
114		120
		121	/* helper storage struct for Coro::AIO */
115	struct io_state	122	struct io_state
116	{	123	{
117	int errorno;	124	int errorno;
118	I32 laststype;	125	I32 laststype;
119	int laststatval;	126	int laststatval;
120	Stat_t statcache;	127	Stat_t statcache;
121	};	128	};
122		129
		130	static size_t coro_stacksize = CORO_STACKSIZE;
123	static struct CoroAPI coroapi;	131	static struct CoroAPI coroapi;
124	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;
125	static HV coro_state_stash, coro_stash;	134	static HV coro_state_stash, coro_stash;
126	static SV coro_mortal; / will be freed after next transfer */	135	static SV coro_mortal; / will be freed after next transfer */
127		136
		137	/* async_pool helper stuff */
		138	static SV *sv_pool_rss;
		139	static SV *sv_pool_size;
		140	static AV *av_async_pool;
		141
128	static struct coro_cctx *cctx_first;	142	static struct coro_cctx *cctx_first;
129	static int cctx_count, cctx_idle;	143	static int cctx_count, cctx_idle;
		144
		145	enum {
		146	CC_MAPPED = 0x01,
		147	CC_NOREUSE = 0x02, /* throw this away after tracing */
		148	CC_TRACE = 0x04,
		149	CC_TRACE_SUB = 0x08, /* trace sub calls */
		150	CC_TRACE_LINE = 0x10, /* trace each statement */
		151	CC_TRACE_ALL = CC_TRACE_SUB \| CC_TRACE_LINE,
		152	};
130		153
131	/* this is a structure representing a c-level coroutine */	154	/* this is a structure representing a c-level coroutine */
132	typedef struct coro_cctx {	155	typedef struct coro_cctx {
133	struct coro_cctx *next;	156	struct coro_cctx *next;
134		157
135	/* the stack */	158	/* the stack */
136	void *sptr;	159	void *sptr;
137	long ssize; /* positive == mmap, otherwise malloc */	160	size_t ssize;
138		161
139	/* cpu state */	162	/* cpu state */
140	void idle_sp; / sp of top-level transfer/schedule/cede call */	163	void idle_sp; / sp of top-level transfer/schedule/cede call */
		164	JMPENV idle_te; / same as idle_sp, but for top_env, TODO: remove once stable */
141	JMPENV *top_env;	165	JMPENV *top_env;
142	coro_context cctx;	166	coro_context cctx;
143		167
144	int inuse;
145
146	#if USE_VALGRIND	168	#if CORO_USE_VALGRIND
147	int valgrind_id;	169	int valgrind_id;
148	#endif	170	#endif
		171	unsigned char flags;
149	} coro_cctx;	172	} coro_cctx;
150		173
151	enum {	174	enum {
152	CF_RUNNING = 0x0001, /* coroutine is running */	175	CF_RUNNING = 0x0001, /* coroutine is running */
153	CF_READY = 0x0002, /* coroutine is ready */	176	CF_READY = 0x0002, /* coroutine is ready */
154	CF_NEW = 0x0004, /* ahs never been switched to */	177	CF_NEW = 0x0004, /* has never been switched to */
		178	CF_DESTROYED = 0x0008, /* coroutine data has been freed */
155	};	179	};
156		180
157	/* this is a structure representing a perl-level coroutine */	181	/* this is a structure representing a perl-level coroutine */
158	struct coro {	182	struct coro {
159	/* the c coroutine allocated to this perl coroutine, if any */	183	/* the c coroutine allocated to this perl coroutine, if any */
…		…
167		191
168	/* optionally saved, might be zero */	192	/* optionally saved, might be zero */
169	AV defav; / @_ */	193	AV defav; / @_ */
170	SV defsv; / $_ */	194	SV defsv; / $_ */
171	SV errsv; / $@ */	195	SV errsv; / $@ */
		196	GV deffh; / default filehandle */
172	SV irssv; / $/ */	197	SV irssv; / $/ */
173	SV irssv_sv; / real $/ cache */	198	SV irssv_sv; / real $/ cache */
174		199
175	#define VAR(name,type) type name;	200	#define VAR(name,type) type name;
176	# include "state.h"	201	# include "state.h"
177	#undef VAR	202	#undef VAR
178		203
		204	/* statistics */
		205	int usecount; /* number of switches to this coro */
		206
179	/* coro process data */	207	/* coro process data */
180	int prio;	208	int prio;
		209
		210	/* linked list */
		211	struct coro next, prev;
		212	HV hv; / the perl hash associated with this coro, if any */
181	};	213	};
182		214
183	typedef struct coro *Coro__State;	215	typedef struct coro *Coro__State;
184	typedef struct coro *Coro__State_or_hashref;	216	typedef struct coro *Coro__State_or_hashref;
185		217
		218	/ Coro ******************************************************************/
		219
		220	#define PRIO_MAX 3
		221	#define PRIO_HIGH 1
		222	#define PRIO_NORMAL 0
		223	#define PRIO_LOW -1
		224	#define PRIO_IDLE -3
		225	#define PRIO_MIN -4
		226
		227	/* for Coro.pm */
		228	static SV *coro_current;
		229	static AV *coro_ready [PRIO_MAX-PRIO_MIN+1];
		230	static int coro_nready;
		231	static struct coro *coro_first;
		232
		233	/ lowlevel stuff ********************************************************/
		234
186	static AV *	235	static AV *
187	coro_clone_padlist (CV *cv)	236	coro_clone_padlist (pTHX_ CV *cv)
188	{	237	{
189	AV *padlist = CvPADLIST (cv);	238	AV *padlist = CvPADLIST (cv);
190	AV newpadlist, newpad;	239	AV newpadlist, newpad;
191		240
192	newpadlist = newAV ();	241	newpadlist = newAV ();
…		…
204		253
205	return newpadlist;	254	return newpadlist;
206	}	255	}
207		256
208	static void	257	static void
209	free_padlist (AV *padlist)	258	free_padlist (pTHX_ AV *padlist)
210	{	259	{
211	/* may be during global destruction */	260	/* may be during global destruction */
212	if (SvREFCNT (padlist))	261	if (SvREFCNT (padlist))
213	{	262	{
214	I32 i = AvFILLp (padlist);	263	I32 i = AvFILLp (padlist);
…		…
235	AV *padlist;	284	AV *padlist;
236	AV av = (AV )mg->mg_obj;	285	AV av = (AV )mg->mg_obj;
237		286
238	/* casting is fun. */	287	/* casting is fun. */
239	while (&PL_sv_undef != (SV )(padlist = (AV )av_pop (av)))	288	while (&PL_sv_undef != (SV )(padlist = (AV )av_pop (av)))
240	free_padlist (padlist);	289	free_padlist (aTHX_ padlist);
241		290
242	SvREFCNT_dec (av);	291	SvREFCNT_dec (av);
243		292
244	return 0;	293	return 0;
245	}	294	}
…		…
253	? SvMAGIC (cv)->mg_type == PERL_MAGIC_coro \	302	? SvMAGIC (cv)->mg_type == PERL_MAGIC_coro \
254	? SvMAGIC (cv) \	303	? SvMAGIC (cv) \
255	: mg_find ((SV *)cv, PERL_MAGIC_coro) \	304	: mg_find ((SV *)cv, PERL_MAGIC_coro) \
256	: 0	305	: 0
257		306
		307	static struct coro *
		308	SvSTATE_ (pTHX_ SV *coro)
		309	{
		310	HV *stash;
		311	MAGIC *mg;
		312
		313	if (SvROK (coro))
		314	coro = SvRV (coro);
		315
		316	if (SvTYPE (coro) != SVt_PVHV)
		317	croak ("Coro::State object required");
		318
		319	stash = SvSTASH (coro);
		320	if (stash != coro_stash && stash != coro_state_stash)
		321	{
		322	/* very slow, but rare, check */
		323	if (!sv_derived_from (sv_2mortal (newRV_inc (coro)), "Coro::State"))
		324	croak ("Coro::State object required");
		325	}
		326
		327	mg = CORO_MAGIC (coro);
		328	return (struct coro *)mg->mg_ptr;
		329	}
		330
		331	#define SvSTATE(sv) SvSTATE_ (aTHX_ (sv))
		332
258	/* the next two functions merely cache the padlists */	333	/* the next two functions merely cache the padlists */
259	static void	334	static void
260	get_padlist (CV *cv)	335	get_padlist (pTHX_ CV *cv)
261	{	336	{
262	MAGIC *mg = CORO_MAGIC (cv);	337	MAGIC *mg = CORO_MAGIC (cv);
263	AV *av;	338	AV *av;
264		339
265	if (mg && AvFILLp ((av = (AV *)mg->mg_obj)) >= 0)	340	if (mg && AvFILLp ((av = (AV *)mg->mg_obj)) >= 0)
266	CvPADLIST (cv) = (AV *)AvARRAY (av)[AvFILLp (av)--];	341	CvPADLIST (cv) = (AV *)AvARRAY (av)[AvFILLp (av)--];
267	else	342	else
268	{	343	{
269	#if PREFER_PERL_FUNCTIONS	344	#if CORO_PREFER_PERL_FUNCTIONS
270	/* this is probably cleaner, but also slower? */	345	/* this is probably cleaner, but also slower? */
271	CV *cp = Perl_cv_clone (cv);	346	CV *cp = Perl_cv_clone (cv);
272	CvPADLIST (cv) = CvPADLIST (cp);	347	CvPADLIST (cv) = CvPADLIST (cp);
273	CvPADLIST (cp) = 0;	348	CvPADLIST (cp) = 0;
274	SvREFCNT_dec (cp);	349	SvREFCNT_dec (cp);
275	#else	350	#else
276	CvPADLIST (cv) = coro_clone_padlist (cv);	351	CvPADLIST (cv) = coro_clone_padlist (aTHX_ cv);
277	#endif	352	#endif
278	}	353	}
279	}	354	}
280		355
281	static void	356	static void
282	put_padlist (CV *cv)	357	put_padlist (pTHX_ CV *cv)
283	{	358	{
284	MAGIC *mg = CORO_MAGIC (cv);	359	MAGIC *mg = CORO_MAGIC (cv);
285	AV *av;	360	AV *av;
286		361
287	if (!mg)	362	if (!mg)
…		…
298	av_extend (av, AvMAX (av) + 1);	373	av_extend (av, AvMAX (av) + 1);
299		374
300	AvARRAY (av)[++AvFILLp (av)] = (SV *)CvPADLIST (cv);	375	AvARRAY (av)[++AvFILLp (av)] = (SV *)CvPADLIST (cv);
301	}	376	}
302		377
		378	/ load & save, init *****************************************************/
		379
303	#define SB do {	380	#define SB do {
304	#define SE } while (0)	381	#define SE } while (0)
305		382
306	#define REPLACE_SV(sv,val) SB SvREFCNT_dec (sv); (sv) = (val); (val) = 0; SE	383	#define REPLACE_SV(sv,val) SB SvREFCNT_dec (sv); (sv) = (val); (val) = 0; SE
307		384
308	static void	385	static void
309	load_perl (Coro__State c)	386	load_perl (pTHX_ Coro__State c)
310	{	387	{
311	#define VAR(name,type) PL_ ## name = c->name;	388	#define VAR(name,type) PL_ ## name = c->name;
312	# include "state.h"	389	# include "state.h"
313	#undef VAR	390	#undef VAR
314		391
315	if (c->defav) REPLACE_SV (GvAV (PL_defgv), c->defav);	392	if (c->defav) REPLACE_SV (GvAV (PL_defgv), c->defav);
316	if (c->defsv) REPLACE_SV (DEFSV , c->defsv);	393	if (c->defsv) REPLACE_SV (DEFSV , c->defsv);
317	if (c->errsv) REPLACE_SV (ERRSV , c->errsv);	394	if (c->errsv) REPLACE_SV (ERRSV , c->errsv);
		395	if (c->deffh) REPLACE_SV (PL_defoutgv , c->deffh);
		396
318	if (c->irssv)	397	if (c->irssv)
319	{	398	{
320	if (c->irssv == PL_rs \|\| sv_eq (PL_rs, c->irssv))	399	if (c->irssv == PL_rs \|\| sv_eq (PL_rs, c->irssv))
		400	{
321	SvREFCNT_dec (c->irssv);	401	SvREFCNT_dec (c->irssv);
		402	c->irssv = 0;
		403	}
322	else	404	else
323	{	405	{
324	REPLACE_SV (PL_rs, c->irssv);	406	REPLACE_SV (PL_rs, c->irssv);
325	if (!c->irssv_sv) c->irssv_sv = get_sv ("/", 0);	407	if (!c->irssv_sv) c->irssv_sv = get_sv ("/", 0);
326	sv_setsv (c->irssv_sv, PL_rs);	408	sv_setsv (c->irssv_sv, PL_rs);
…		…
332	CV *cv;	414	CV *cv;
333		415
334	/* now do the ugly restore mess */	416	/* now do the ugly restore mess */
335	while ((cv = (CV *)POPs))	417	while ((cv = (CV *)POPs))
336	{	418	{
337	put_padlist (cv); /* mark this padlist as available */	419	put_padlist (aTHX_ cv); /* mark this padlist as available */
338	CvDEPTH (cv) = PTR2IV (POPs);	420	CvDEPTH (cv) = PTR2IV (POPs);
339	CvPADLIST (cv) = (AV *)POPs;	421	CvPADLIST (cv) = (AV *)POPs;
340	}	422	}
341		423
342	PUTBACK;	424	PUTBACK;
343	}	425	}
344	}	426	}
345		427
346	static void	428	static void
347	save_perl (Coro__State c)	429	save_perl (pTHX_ Coro__State c)
348	{	430	{
349	{	431	{
350	dSP;	432	dSP;
351	I32 cxix = cxstack_ix;	433	I32 cxix = cxstack_ix;
352	PERL_CONTEXT *ccstk = cxstack;	434	PERL_CONTEXT *ccstk = cxstack;
…		…
355	/*	437	/*
356	* the worst thing you can imagine happens first - we have to save	438	* the worst thing you can imagine happens first - we have to save
357	* (and reinitialize) all cv's in the whole callchain :(	439	* (and reinitialize) all cv's in the whole callchain :(
358	*/	440	*/
359		441
360	EXTEND (SP, 3 + 1);
361	PUSHs (Nullsv);	442	XPUSHs (Nullsv);
362	/* this loop was inspired by pp_caller */	443	/* this loop was inspired by pp_caller */
363	for (;;)	444	for (;;)
364	{	445	{
365	while (cxix >= 0)	446	while (cxix >= 0)
366	{	447	{
367	PERL_CONTEXT *cx = &ccstk[cxix--];	448	PERL_CONTEXT *cx = &ccstk[cxix--];
368		449
369	if (CxTYPE (cx) == CXt_SUB)	450	if (CxTYPE (cx) == CXt_SUB \|\| CxTYPE (cx) == CXt_FORMAT)
370	{	451	{
371	CV *cv = cx->blk_sub.cv;	452	CV *cv = cx->blk_sub.cv;
372		453
373	if (CvDEPTH (cv))	454	if (CvDEPTH (cv))
374	{	455	{
…		…
376	PUSHs ((SV *)CvPADLIST (cv));	457	PUSHs ((SV *)CvPADLIST (cv));
377	PUSHs (INT2PTR (SV *, CvDEPTH (cv)));	458	PUSHs (INT2PTR (SV *, CvDEPTH (cv)));
378	PUSHs ((SV *)cv);	459	PUSHs ((SV *)cv);
379		460
380	CvDEPTH (cv) = 0;	461	CvDEPTH (cv) = 0;
381	get_padlist (cv);	462	get_padlist (aTHX_ cv);
382	}	463	}
383	}	464	}
384	}	465	}
385		466
386	if (top_si->si_type == PERLSI_MAIN)	467	if (top_si->si_type == PERLSI_MAIN)
387	break;	468	break;
388		469
389	top_si = top_si->si_prev;	470	top_si = top_si->si_prev;
390	ccstk = top_si->si_cxstack;	471	ccstk = top_si->si_cxstack;
391	cxix = top_si->si_cxix;	472	cxix = top_si->si_cxix;
392	}	473	}
393		474
394	PUTBACK;	475	PUTBACK;
395	}	476	}
396		477
397	c->defav = c->save & CORO_SAVE_DEFAV ? (AV *)SvREFCNT_inc (GvAV (PL_defgv)) : 0;	478	c->defav = c->save & CORO_SAVE_DEFAV ? (AV *)SvREFCNT_inc (GvAV (PL_defgv)) : 0;
398	c->defsv = c->save & CORO_SAVE_DEFSV ? SvREFCNT_inc (DEFSV) : 0;	479	c->defsv = c->save & CORO_SAVE_DEFSV ? SvREFCNT_inc (DEFSV) : 0;
399	c->errsv = c->save & CORO_SAVE_ERRSV ? SvREFCNT_inc (ERRSV) : 0;	480	c->errsv = c->save & CORO_SAVE_ERRSV ? SvREFCNT_inc (ERRSV) : 0;
		481	c->deffh = c->save & CORO_SAVE_DEFFH ? (GV *)SvREFCNT_inc (PL_defoutgv) : 0;
400	c->irssv = c->save & CORO_SAVE_IRSSV ? SvREFCNT_inc (PL_rs) : 0;	482	c->irssv = c->save & CORO_SAVE_IRSSV ? SvREFCNT_inc (PL_rs) : 0;
401		483
402	#define VAR(name,type)c->name = PL_ ## name;	484	#define VAR(name,type)c->name = PL_ ## name;
403	# include "state.h"	485	# include "state.h"
404	#undef VAR	486	#undef VAR
…		…
408	* allocate various perl stacks. This is an exact copy	490	* allocate various perl stacks. This is an exact copy
409	* of perl.c:init_stacks, except that it uses less memory	491	* of perl.c:init_stacks, except that it uses less memory
410	* on the (sometimes correct) assumption that coroutines do	492	* on the (sometimes correct) assumption that coroutines do
411	* not usually need a lot of stackspace.	493	* not usually need a lot of stackspace.
412	*/	494	*/
413	#if PREFER_PERL_FUNCTIONS	495	#if CORO_PREFER_PERL_FUNCTIONS
414	# define coro_init_stacks init_stacks	496	# define coro_init_stacks init_stacks
415	#else	497	#else
416	static void	498	static void
417	coro_init_stacks ()	499	coro_init_stacks (pTHX)
418	{	500	{
419	PL_curstackinfo = new_stackinfo(128, 1024/sizeof(PERL_CONTEXT));	501	PL_curstackinfo = new_stackinfo(64, 6);
420	PL_curstackinfo->si_type = PERLSI_MAIN;	502	PL_curstackinfo->si_type = PERLSI_MAIN;
421	PL_curstack = PL_curstackinfo->si_stack;	503	PL_curstack = PL_curstackinfo->si_stack;
422	PL_mainstack = PL_curstack; /* remember in case we switch stacks */	504	PL_mainstack = PL_curstack; /* remember in case we switch stacks */
423		505
424	PL_stack_base = AvARRAY(PL_curstack);	506	PL_stack_base = AvARRAY(PL_curstack);
425	PL_stack_sp = PL_stack_base;	507	PL_stack_sp = PL_stack_base;
426	PL_stack_max = PL_stack_base + AvMAX(PL_curstack);	508	PL_stack_max = PL_stack_base + AvMAX(PL_curstack);
427		509
428	New(50,PL_tmps_stack,128,SV*);	510	New(50,PL_tmps_stack,64,SV*);
429	PL_tmps_floor = -1;	511	PL_tmps_floor = -1;
430	PL_tmps_ix = -1;	512	PL_tmps_ix = -1;
431	PL_tmps_max = 128;	513	PL_tmps_max = 64;
432		514
433	New(54,PL_markstack,32,I32);	515	New(54,PL_markstack,16,I32);
434	PL_markstack_ptr = PL_markstack;	516	PL_markstack_ptr = PL_markstack;
435	PL_markstack_max = PL_markstack + 32;	517	PL_markstack_max = PL_markstack + 16;
436		518
437	#ifdef SET_MARK_OFFSET	519	#ifdef SET_MARK_OFFSET
438	SET_MARK_OFFSET;	520	SET_MARK_OFFSET;
439	#endif	521	#endif
440		522
441	New(54,PL_scopestack,32,I32);	523	New(54,PL_scopestack,16,I32);
442	PL_scopestack_ix = 0;	524	PL_scopestack_ix = 0;
443	PL_scopestack_max = 32;	525	PL_scopestack_max = 16;
444		526
445	New(54,PL_savestack,64,ANY);	527	New(54,PL_savestack,64,ANY);
446	PL_savestack_ix = 0;	528	PL_savestack_ix = 0;
447	PL_savestack_max = 64;	529	PL_savestack_max = 64;
448		530
449	#if !PERL_VERSION_ATLEAST (5,9,0)	531	#if !PERL_VERSION_ATLEAST (5,9,0)
450	New(54,PL_retstack,16,OP*);	532	New(54,PL_retstack,4,OP*);
451	PL_retstack_ix = 0;	533	PL_retstack_ix = 0;
452	PL_retstack_max = 16;	534	PL_retstack_max = 4;
453	#endif	535	#endif
454	}	536	}
455	#endif	537	#endif
456		538
457	/*	539	/*
458	* destroy the stacks, the callchain etc...	540	* destroy the stacks, the callchain etc...
459	*/	541	*/
460	static void	542	static void
461	coro_destroy_stacks ()	543	coro_destroy_stacks (pTHX)
462	{	544	{
463	if (!IN_DESTRUCT)	545	if (!IN_DESTRUCT)
464	{	546	{
465	/* restore all saved variables and stuff */	547	/* restore all saved variables and stuff */
466	LEAVE_SCOPE (0);	548	LEAVE_SCOPE (0);
…		…
468		550
469	/* free all temporaries */	551	/* free all temporaries */
470	FREETMPS;	552	FREETMPS;
471	assert (PL_tmps_ix == -1);	553	assert (PL_tmps_ix == -1);
472		554
		555	/* unwind all extra stacks */
473	POPSTACK_TO (PL_mainstack);	556	POPSTACK_TO (PL_mainstack);
		557
		558	/* unwind main stack */
		559	dounwind (-1);
474	}	560	}
475		561
476	while (PL_curstackinfo->si_next)	562	while (PL_curstackinfo->si_next)
477	PL_curstackinfo = PL_curstackinfo->si_next;	563	PL_curstackinfo = PL_curstackinfo->si_next;
478		564
…		…
495	#if !PERL_VERSION_ATLEAST (5,9,0)	581	#if !PERL_VERSION_ATLEAST (5,9,0)
496	Safefree (PL_retstack);	582	Safefree (PL_retstack);
497	#endif	583	#endif
498	}	584	}
499		585
		586	static size_t
		587	coro_rss (pTHX_ struct coro *coro)
		588	{
		589	size_t rss = sizeof (coro);
		590
		591	if (coro->mainstack)
		592	{
		593	if (coro->flags & CF_RUNNING)
		594	{
		595	#define VAR(name,type)coro->name = PL_ ## name;
		596	# include "state.h"
		597	#undef VAR
		598	}
		599
		600	rss += sizeof (coro->curstackinfo);
		601	rss += sizeof (struct xpvav) + (1 + AvFILL (coro->curstackinfo->si_stack)) * sizeof (SV *);
		602	rss += (coro->curstackinfo->si_cxmax + 1) * sizeof (PERL_CONTEXT);
		603	rss += sizeof (struct xpvav) + (1 + AvFILL (coro->curstack)) * sizeof (SV *);
		604	rss += coro->tmps_max * sizeof (SV *);
		605	rss += (coro->markstack_max - coro->markstack_ptr) * sizeof (I32);
		606	rss += coro->scopestack_max * sizeof (I32);
		607	rss += coro->savestack_max * sizeof (ANY);
		608
		609	#if !PERL_VERSION_ATLEAST (5,9,0)
		610	rss += coro->retstack_max * sizeof (OP *);
		611	#endif
		612	}
		613
		614	return rss;
		615	}
		616
		617	/ coroutine stack handling **********************************************/
		618
500	static void	619	static void
501	setup_coro (struct coro *coro)	620	setup_coro (pTHX_ struct coro *coro)
502	{	621	{
503	/*	622	/*
504	* emulate part of the perl startup here.	623	* emulate part of the perl startup here.
505	*/	624	*/
506
507	coro_init_stacks ();	625	coro_init_stacks (aTHX);
508		626
		627	PL_runops = RUNOPS_DEFAULT;
509	PL_curcop = &PL_compiling;	628	PL_curcop = &PL_compiling;
510	PL_in_eval = EVAL_NULL;	629	PL_in_eval = EVAL_NULL;
		630	PL_comppad = 0;
511	PL_curpm = 0;	631	PL_curpm = 0;
512	PL_localizing = 0;	632	PL_localizing = 0;
513	PL_dirty = 0;	633	PL_dirty = 0;
514	PL_restartop = 0;	634	PL_restartop = 0;
515		635
…		…
523	Zero (&myop, 1, LOGOP);	643	Zero (&myop, 1, LOGOP);
524	myop.op_next = Nullop;	644	myop.op_next = Nullop;
525	myop.op_flags = OPf_WANT_VOID;	645	myop.op_flags = OPf_WANT_VOID;
526		646
527	PUSHMARK (SP);	647	PUSHMARK (SP);
528	XPUSHs ((SV *)get_cv ("Coro::State::_coro_init", FALSE));	648	XPUSHs (av_shift (GvAV (PL_defgv)));
529	PUTBACK;	649	PUTBACK;
530	PL_op = (OP *)&myop;	650	PL_op = (OP *)&myop;
531	PL_op = PL_ppaddr[OP_ENTERSUB](aTHX);	651	PL_op = PL_ppaddr[OP_ENTERSUB](aTHX);
532	SPAGAIN;	652	SPAGAIN;
533	}	653	}
534		654
535	ENTER; /* necessary e.g. for dounwind */	655	ENTER; /* necessary e.g. for dounwind */
536	}	656	}
537		657
538	static void	658	static void
539	free_coro_mortal ()	659	free_coro_mortal (pTHX)
540	{	660	{
541	if (coro_mortal)	661	if (coro_mortal)
542	{	662	{
543	SvREFCNT_dec (coro_mortal);	663	SvREFCNT_dec (coro_mortal);
544	coro_mortal = 0;	664	coro_mortal = 0;
545	}	665	}
546	}	666	}
547		667
		668	static int
		669	runops_trace (pTHX)
		670	{
		671	COP *oldcop = 0;
		672	int oldcxix = -2;
		673	struct coro coro = SvSTATE (coro_current); / trace cctx is tied to specific coro */
		674	coro_cctx *cctx = coro->cctx;
		675
		676	while ((PL_op = CALL_FPTR (PL_op->op_ppaddr) (aTHX)))
		677	{
		678	PERL_ASYNC_CHECK ();
		679
		680	if (cctx->flags & CC_TRACE_ALL)
		681	{
		682	if (PL_op->op_type == OP_LEAVESUB && cctx->flags & CC_TRACE_SUB)
		683	{
		684	PERL_CONTEXT *cx = &cxstack[cxstack_ix];
		685	SV bot, top;
		686	AV av = newAV (); / return values */
		687	SV **cb;
		688	dSP;
		689
		690	GV *gv = CvGV (cx->blk_sub.cv);
		691	SV *fullname = sv_2mortal (newSV (0));
		692	if (isGV (gv))
		693	gv_efullname3 (fullname, gv, 0);
		694
		695	bot = PL_stack_base + cx->blk_oldsp + 1;
		696	top = cx->blk_gimme == G_ARRAY ? SP + 1
		697	: cx->blk_gimme == G_SCALAR ? bot + 1
		698	: bot;
		699
		700	while (bot < top)
		701	av_push (av, SvREFCNT_inc (*bot++));
		702
		703	PL_runops = RUNOPS_DEFAULT;
		704	ENTER;
		705	SAVETMPS;
		706	EXTEND (SP, 3);
		707	PUSHMARK (SP);
		708	PUSHs (&PL_sv_no);
		709	PUSHs (fullname);
		710	PUSHs (sv_2mortal (newRV_noinc ((SV *)av)));
		711	PUTBACK;
		712	cb = hv_fetch ((HV *)SvRV (coro_current), "_trace_sub_cb", sizeof ("_trace_sub_cb") - 1, 0);
		713	if (cb) call_sv (*cb, G_KEEPERR \| G_EVAL \| G_VOID \| G_DISCARD);
		714	SPAGAIN;
		715	FREETMPS;
		716	LEAVE;
		717	PL_runops = runops_trace;
		718	}
		719
		720	if (oldcop != PL_curcop)
		721	{
		722	oldcop = PL_curcop;
		723
		724	if (PL_curcop != &PL_compiling)
		725	{
		726	SV **cb;
		727
		728	if (oldcxix != cxstack_ix && cctx->flags & CC_TRACE_SUB)
		729	{
		730	PERL_CONTEXT *cx = &cxstack[cxstack_ix];
		731
		732	if (CxTYPE (cx) == CXt_SUB && oldcxix < cxstack_ix)
		733	{
		734	runops_proc_t old_runops = PL_runops;
		735	dSP;
		736	GV *gv = CvGV (cx->blk_sub.cv);
		737	SV *fullname = sv_2mortal (newSV (0));
		738
		739	if (isGV (gv))
		740	gv_efullname3 (fullname, gv, 0);
		741
		742	PL_runops = RUNOPS_DEFAULT;
		743	ENTER;
		744	SAVETMPS;
		745	EXTEND (SP, 3);
		746	PUSHMARK (SP);
		747	PUSHs (&PL_sv_yes);
		748	PUSHs (fullname);
		749	PUSHs (cx->blk_sub.hasargs ? sv_2mortal (newRV_inc ((SV *)cx->blk_sub.argarray)) : &PL_sv_undef);
		750	PUTBACK;
		751	cb = hv_fetch ((HV *)SvRV (coro_current), "_trace_sub_cb", sizeof ("_trace_sub_cb") - 1, 0);
		752	if (cb) call_sv (*cb, G_KEEPERR \| G_EVAL \| G_VOID \| G_DISCARD);
		753	SPAGAIN;
		754	FREETMPS;
		755	LEAVE;
		756	PL_runops = runops_trace;
		757	}
		758
		759	oldcxix = cxstack_ix;
		760	}
		761
		762	if (cctx->flags & CC_TRACE_LINE)
		763	{
		764	dSP;
		765
		766	PL_runops = RUNOPS_DEFAULT;
		767	ENTER;
		768	SAVETMPS;
		769	EXTEND (SP, 3);
		770	PL_runops = RUNOPS_DEFAULT;
		771	PUSHMARK (SP);
		772	PUSHs (sv_2mortal (newSVpv (OutCopFILE (oldcop), 0)));
		773	PUSHs (sv_2mortal (newSViv (CopLINE (oldcop))));
		774	PUTBACK;
		775	cb = hv_fetch ((HV *)SvRV (coro_current), "_trace_line_cb", sizeof ("_trace_line_cb") - 1, 0);
		776	if (cb) call_sv (*cb, G_KEEPERR \| G_EVAL \| G_VOID \| G_DISCARD);
		777	SPAGAIN;
		778	FREETMPS;
		779	LEAVE;
		780	PL_runops = runops_trace;
		781	}
		782	}
		783	}
		784	}
		785	}
		786
		787	TAINT_NOT;
		788	return 0;
		789	}
		790
548	/* inject a fake call to Coro::State::_cctx_init into the execution */	791	/* inject a fake call to Coro::State::_cctx_init into the execution */
		792	/* _cctx_init should be careful, as it could be called at almost any time */
		793	/* during execution of a perl program */
549	static void NOINLINE	794	static void NOINLINE
550	prepare_cctx (coro_cctx *cctx)	795	prepare_cctx (pTHX_ coro_cctx *cctx)
551	{	796	{
552	dSP;	797	dSP;
553	LOGOP myop;	798	LOGOP myop;
		799
		800	PL_top_env = &PL_start_env;
		801
		802	if (cctx->flags & CC_TRACE)
		803	PL_runops = runops_trace;
554		804
555	Zero (&myop, 1, LOGOP);	805	Zero (&myop, 1, LOGOP);
556	myop.op_next = PL_op;	806	myop.op_next = PL_op;
557	myop.op_flags = OPf_WANT_VOID \| OPf_STACKED;	807	myop.op_flags = OPf_WANT_VOID \| OPf_STACKED;
558		808
…		…
564	PL_op = (OP *)&myop;	814	PL_op = (OP *)&myop;
565	PL_op = PL_ppaddr[OP_ENTERSUB](aTHX);	815	PL_op = PL_ppaddr[OP_ENTERSUB](aTHX);
566	SPAGAIN;	816	SPAGAIN;
567	}	817	}
568		818
		819	/*
		820	* this is a _very_ stripped down perl interpreter ;)
		821	*/
569	static void	822	static void
570	coro_run (void *arg)	823	coro_run (void *arg)
571	{	824	{
		825	dTHX;
		826
572	/* coro_run is the alternative tail of transfer(), so unlock here. */	827	/* coro_run is the alternative tail of transfer(), so unlock here. */
573	UNLOCK;	828	UNLOCK;
574		829
575	/*	830	/* we now skip the entersub that lead to transfer() */
576	* this is a _very_ stripped down perl interpreter ;)	831	PL_op = PL_op->op_next;
577	*/
578	PL_top_env = &PL_start_env;
579		832
580	/* inject call to cctx_init */	833	/* inject a fake subroutine call to cctx_init */
581	prepare_cctx ((coro_cctx *)arg);	834	prepare_cctx (aTHX_ (coro_cctx *)arg);
582		835
583	/* somebody will hit me for both perl_run and PL_restartop */	836	/* somebody or something will hit me for both perl_run and PL_restartop */
584	PL_restartop = PL_op;	837	PL_restartop = PL_op;
585	perl_run (PL_curinterp);	838	perl_run (PL_curinterp);
586		839
587	fputs ("FATAL: C coroutine fell over the edge of the world, aborting. Did you call exit in a coroutine?\n", stderr);	840	/*
588	abort ();	841	* If perl-run returns we assume exit() was being called or the coro
		842	* fell off the end, which seems to be the only valid (non-bug)
		843	* reason for perl_run to return. We try to exit by jumping to the
		844	* bootstrap-time "top" top_env, as we cannot restore the "main"
		845	* coroutine as Coro has no such concept
		846	*/
		847	PL_top_env = main_top_env;
		848	JMPENV_JUMP (2); /* I do not feel well about the hardcoded 2 at all */
589	}	849	}
590		850
591	static coro_cctx *	851	static coro_cctx *
592	cctx_new ()	852	cctx_new ()
593	{	853	{
594	coro_cctx *cctx;	854	coro_cctx *cctx;
		855	void *stack_start;
		856	size_t stack_size;
595		857
596	++cctx_count;	858	++cctx_count;
597		859
598	Newz (0, cctx, 1, coro_cctx);	860	Newz (0, cctx, 1, coro_cctx);
599		861
600	#if HAVE_MMAP	862	#if HAVE_MMAP
601		863
602	cctx->ssize = ((STACKSIZE * sizeof (long) + PAGESIZE - 1) / PAGESIZE + STACKGUARD) * PAGESIZE;	864	cctx->ssize = ((coro_stacksize * sizeof (long) + PAGESIZE - 1) / PAGESIZE + CORO_STACKGUARD) * PAGESIZE;
603	/* mmap supposedly does allocate-on-write for us */	865	/* mmap supposedly does allocate-on-write for us */
604	cctx->sptr = mmap (0, cctx->ssize, PROT_EXEC\|PROT_READ\|PROT_WRITE, MAP_PRIVATE\|MAP_ANONYMOUS, 0, 0);	866	cctx->sptr = mmap (0, cctx->ssize, PROT_EXEC\|PROT_READ\|PROT_WRITE, MAP_PRIVATE\|MAP_ANONYMOUS, 0, 0);
605		867
606	if (cctx->sptr == (void *)-1)	868	if (cctx->sptr != (void *)-1)
607	{
608	perror ("FATAL: unable to mmap stack for coroutine");
609	_exit (EXIT_FAILURE);
610	}	869	{
611
612	# if STACKGUARD	870	# if CORO_STACKGUARD
613	mprotect (cctx->sptr, STACKGUARD * PAGESIZE, PROT_NONE);	871	mprotect (cctx->sptr, CORO_STACKGUARD * PAGESIZE, PROT_NONE);
614	# endif	872	# endif
		873	stack_start = CORO_STACKGUARD * PAGESIZE + (char *)cctx->sptr;
		874	stack_size = cctx->ssize - CORO_STACKGUARD * PAGESIZE;
		875	cctx->flags \|= CC_MAPPED;
		876	}
		877	else
		878	#endif
		879	{
		880	cctx->ssize = coro_stacksize * (long)sizeof (long);
		881	New (0, cctx->sptr, coro_stacksize, long);
615		882
616	#else
617
618	cctx->ssize = STACKSIZE * (long)sizeof (long);
619	New (0, cctx->sptr, STACKSIZE, long);
620
621	if (!cctx->sptr)	883	if (!cctx->sptr)
622	{	884	{
623	perror ("FATAL: unable to malloc stack for coroutine");	885	perror ("FATAL: unable to allocate stack for coroutine");
624	_exit (EXIT_FAILURE);	886	_exit (EXIT_FAILURE);
625	}	887	}
626		888
627	#endif	889	stack_start = cctx->sptr;
		890	stack_size = cctx->ssize;
		891	}
628		892
629	#if USE_VALGRIND	893	REGISTER_STACK (cctx, (char )stack_start, (char )stack_start + stack_size);
630	cctx->valgrind_id = VALGRIND_STACK_REGISTER (
631	STACKGUARD * PAGESIZE + (char *)cctx->sptr,
632	cctx->ssize + (char *)cctx->sptr
633	);
634	#endif
635
636	coro_create (&cctx->cctx, coro_run, (void *)cctx, cctx->sptr, cctx->ssize);	894	coro_create (&cctx->cctx, coro_run, (void *)cctx, stack_start, stack_size);
637		895
638	return cctx;	896	return cctx;
639	}	897	}
640		898
641	static void	899	static void
…		…
644	if (!cctx)	902	if (!cctx)
645	return;	903	return;
646		904
647	--cctx_count;	905	--cctx_count;
648		906
649	#if USE_VALGRIND	907	#if CORO_USE_VALGRIND
650	VALGRIND_STACK_DEREGISTER (cctx->valgrind_id);	908	VALGRIND_STACK_DEREGISTER (cctx->valgrind_id);
651	#endif	909	#endif
652		910
653	#if HAVE_MMAP	911	#if HAVE_MMAP
		912	if (cctx->flags & CC_MAPPED)
654	munmap (cctx->sptr, cctx->ssize);	913	munmap (cctx->sptr, cctx->ssize);
655	#else	914	else
		915	#endif
656	Safefree (cctx->sptr);	916	Safefree (cctx->sptr);
657	#endif
658		917
659	Safefree (cctx);	918	Safefree (cctx);
660	}	919	}
661		920
662	static coro_cctx *	921	static coro_cctx *
663	cctx_get ()	922	cctx_get (pTHX)
664	{	923	{
665	coro_cctx *cctx;
666
667	if (cctx_first)	924	while (cctx_first)
668	{	925	{
669	cctx = cctx_first;	926	coro_cctx *cctx = cctx_first;
670	cctx_first = cctx->next;	927	cctx_first = cctx->next;
671	--cctx_idle;	928	--cctx_idle;
672	}	929
673	else	930	if (cctx->ssize >= coro_stacksize && !(cctx->flags & CC_NOREUSE))
674	{	931	return cctx;
675	cctx = cctx_new ();	932
676	PL_op = PL_op->op_next;	933	cctx_destroy (cctx);
677	}	934	}
678		935
679	return cctx;	936	return cctx_new ();
680	}	937	}
681		938
682	static void	939	static void
683	cctx_put (coro_cctx *cctx)	940	cctx_put (coro_cctx *cctx)
684	{	941	{
…		…
687	{	944	{
688	coro_cctx *first = cctx_first;	945	coro_cctx *first = cctx_first;
689	cctx_first = first->next;	946	cctx_first = first->next;
690	--cctx_idle;	947	--cctx_idle;
691		948
692	assert (!first->inuse);
693	cctx_destroy (first);	949	cctx_destroy (first);
694	}	950	}
695		951
696	++cctx_idle;	952	++cctx_idle;
697	cctx->next = cctx_first;	953	cctx->next = cctx_first;
698	cctx_first = cctx;	954	cctx_first = cctx;
699	}	955	}
700		956
701	/* never call directly, always through the coro_state_transfer global variable */	957	/ coroutine switching ***************************************************/
		958
702	static void NOINLINE	959	static void NOINLINE
		960	transfer_check (pTHX_ struct coro prev, struct coro next)
		961	{
		962	if (prev != next)
		963	{
		964	if (!(prev->flags & (CF_RUNNING \| CF_NEW)))
		965	croak ("Coro::State::transfer called with non-running/new prev Coro::State, but can only transfer from running or new states");
		966
		967	if (next->flags & CF_RUNNING)
		968	croak ("Coro::State::transfer called with running next Coro::State, but can only transfer to inactive states");
		969
		970	if (next->flags & CF_DESTROYED)
		971	croak ("Coro::State::transfer called with destroyed next Coro::State, but can only transfer to inactive states");
		972
		973	if (PL_lex_state != LEX_NOTPARSING)
		974	croak ("Coro::State::transfer called while parsing, but this is not supported");
		975	}
		976	}
		977
		978	/* always use the TRANSFER macro */
		979	static void NOINLINE
703	transfer (struct coro prev, struct coro next)	980	transfer (pTHX_ struct coro prev, struct coro next)
704	{	981	{
705	dSTACKLEVEL;	982	dSTACKLEVEL;
706		983
707	/* sometimes transfer is only called to set idle_sp */	984	/* sometimes transfer is only called to set idle_sp */
708	if (!next)	985	if (!next)
709	{	986	{
710	((coro_cctx *)prev)->idle_sp = STACKLEVEL;	987	((coro_cctx *)prev)->idle_sp = STACKLEVEL;
711	assert (((coro_cctx )prev)->top_env = PL_top_env); / just for the side effetc when assert is enabled */	988	assert (((coro_cctx )prev)->idle_te = PL_top_env); / just for the side-effect when asserts are enabled */
712	}	989	}
713	else if (prev != next)	990	else if (prev != next)
714	{	991	{
715	coro_cctx *prev__cctx;	992	coro_cctx *prev__cctx;
716		993
717	if (prev->flags & CF_NEW)	994	if (prev->flags & CF_NEW)
718	{	995	{
719	/* create a new empty context */	996	/* create a new empty context */
720	Newz (0, prev->cctx, 1, coro_cctx);	997	Newz (0, prev->cctx, 1, coro_cctx);
721	prev->cctx->inuse = 1;
722	prev->flags &= ~CF_NEW;	998	prev->flags &= ~CF_NEW;
723	prev->flags \|= CF_RUNNING;	999	prev->flags \|= CF_RUNNING;
724	}	1000	}
725
726	/TODO: must not croak here /
727	if (!prev->flags & CF_RUNNING)
728	croak ("Coro::State::transfer called with non-running prev Coro::State, but can only transfer from running states");
729
730	if (next->flags & CF_RUNNING)
731	croak ("Coro::State::transfer called with running next Coro::State, but can only transfer to inactive states");
732		1001
733	prev->flags &= ~CF_RUNNING;	1002	prev->flags &= ~CF_RUNNING;
734	next->flags \|= CF_RUNNING;	1003	next->flags \|= CF_RUNNING;
735		1004
736	LOCK;	1005	LOCK;
…		…
738	if (next->flags & CF_NEW)	1007	if (next->flags & CF_NEW)
739	{	1008	{
740	/* need to start coroutine */	1009	/* need to start coroutine */
741	next->flags &= ~CF_NEW;	1010	next->flags &= ~CF_NEW;
742	/* first get rid of the old state */	1011	/* first get rid of the old state */
743	save_perl (prev);	1012	save_perl (aTHX_ prev);
744	/* setup coroutine call */	1013	/* setup coroutine call */
745	setup_coro (next);	1014	setup_coro (aTHX_ next);
746	/* need a new stack */
747	assert (!next->cctx);
748	}	1015	}
749	else	1016	else
750	{	1017	{
751	/* coroutine already started */	1018	/* coroutine already started */
752	save_perl (prev);	1019	save_perl (aTHX_ prev);
753	load_perl (next);	1020	load_perl (aTHX_ next);
754	}	1021	}
755		1022
756	prev__cctx = prev->cctx;	1023	prev__cctx = prev->cctx;
757		1024
758	/* possibly "free" the cctx */	1025	/* possibly "free" the cctx */
759	if (prev__cctx->idle_sp == STACKLEVEL)	1026	if (prev__cctx->idle_sp == STACKLEVEL && !(prev__cctx->flags & CC_TRACE))
760	{	1027	{
761	/* I assume that STACKLEVEL is a stronger indicator than PL_top_env changes */	1028	/* I assume that STACKLEVEL is a stronger indicator than PL_top_env changes */
762	assert (PL_top_env == prev__cctx->top_env);	1029	assert (("ERROR: current top_env must equal previous top_env", PL_top_env == prev__cctx->idle_te));
763		1030
764	prev->cctx = 0;	1031	prev->cctx = 0;
765		1032
766	cctx_put (prev__cctx);	1033	cctx_put (prev__cctx);
767	prev__cctx->inuse = 0;
768	}	1034	}
769		1035
		1036	++next->usecount;
		1037
770	if (!next->cctx)	1038	if (!next->cctx)
771	{
772	next->cctx = cctx_get ();	1039	next->cctx = cctx_get (aTHX);
773	assert (!next->cctx->inuse);
774	next->cctx->inuse = 1;
775	}
776		1040
777	if (prev__cctx != next->cctx)	1041	if (prev__cctx != next->cctx)
778	{	1042	{
779	prev__cctx->top_env = PL_top_env;	1043	prev__cctx->top_env = PL_top_env;
780	PL_top_env = next->cctx->top_env;	1044	PL_top_env = next->cctx->top_env;
781	coro_transfer (&prev__cctx->cctx, &next->cctx->cctx);	1045	coro_transfer (&prev__cctx->cctx, &next->cctx->cctx);
782	}	1046	}
783		1047
784	free_coro_mortal ();	1048	free_coro_mortal (aTHX);
785
786	UNLOCK;	1049	UNLOCK;
787	}	1050	}
788	}	1051	}
789		1052
790	struct transfer_args	1053	struct transfer_args
791	{	1054	{
792	struct coro prev, next;	1055	struct coro prev, next;
793	};	1056	};
794		1057
795	#define TRANSFER(ta) transfer ((ta).prev, (ta).next)	1058	#define TRANSFER(ta) transfer (aTHX_ (ta).prev, (ta).next)
		1059	#define TRANSFER_CHECK(ta) transfer_check (aTHX_ (ta).prev, (ta).next)
796		1060
		1061	/ high level stuff ******************************************************/
		1062
797	static void	1063	static int
798	coro_state_destroy (struct coro *coro)	1064	coro_state_destroy (pTHX_ struct coro *coro)
799	{	1065	{
800	if (coro->refcnt--)	1066	if (coro->flags & CF_DESTROYED)
801	return;	1067	return 0;
		1068
		1069	coro->flags \|= CF_DESTROYED;
		1070
		1071	if (coro->flags & CF_READY)
		1072	{
		1073	/* reduce nready, as destroying a ready coro effectively unreadies it */
		1074	/* alternative: look through all ready queues and remove the coro */
		1075	LOCK;
		1076	--coro_nready;
		1077	UNLOCK;
		1078	}
		1079	else
		1080	coro->flags \|= CF_READY; /* make sure it is NOT put into the readyqueue */
802		1081
803	if (coro->mainstack && coro->mainstack != main_mainstack)	1082	if (coro->mainstack && coro->mainstack != main_mainstack)
804	{	1083	{
805	struct coro temp;	1084	struct coro temp;
		1085
		1086	assert (!(coro->flags & CF_RUNNING));
		1087
806	Zero (&temp, 1, struct coro);	1088	Zero (&temp, 1, struct coro);
807	temp.save = CORO_SAVE_ALL;	1089	temp.save = CORO_SAVE_ALL;
808		1090
809	if (coro->flags & CF_RUNNING)	1091	if (coro->flags & CF_RUNNING)
810	croak ("FATAL: tried to destroy currently running coroutine");	1092	croak ("FATAL: tried to destroy currently running coroutine");
811		1093
812	save_perl (&temp);	1094	save_perl (aTHX_ &temp);
813	load_perl (coro);	1095	load_perl (aTHX_ coro);
814		1096
815	coro_destroy_stacks ();	1097	coro_destroy_stacks (aTHX);
816		1098
817	load_perl (&temp); /* this will get rid of defsv etc.. */	1099	load_perl (aTHX_ &temp); /* this will get rid of defsv etc.. */
818		1100
819	coro->mainstack = 0;	1101	coro->mainstack = 0;
820	}	1102	}
821		1103
822	cctx_destroy (coro->cctx);	1104	cctx_destroy (coro->cctx);
823	SvREFCNT_dec (coro->args);	1105	SvREFCNT_dec (coro->args);
824	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;
825	}	1112	}
826		1113
827	static int	1114	static int
828	coro_state_clear (pTHX_ SV sv, MAGIC mg)	1115	coro_state_free (pTHX_ SV sv, MAGIC mg)
829	{	1116	{
830	struct coro coro = (struct coro )mg->mg_ptr;	1117	struct coro coro = (struct coro )mg->mg_ptr;
831	mg->mg_ptr = 0;	1118	mg->mg_ptr = 0;
832		1119
		1120	coro->hv = 0;
		1121
		1122	if (--coro->refcnt < 0)
		1123	{
833	coro_state_destroy (coro);	1124	coro_state_destroy (aTHX_ coro);
		1125	Safefree (coro);
		1126	}
834		1127
835	return 0;	1128	return 0;
836	}	1129	}
837		1130
838	static int	1131	static int
…		…
845	return 0;	1138	return 0;
846	}	1139	}
847		1140
848	static MGVTBL coro_state_vtbl = {	1141	static MGVTBL coro_state_vtbl = {
849	0, 0, 0, 0,	1142	0, 0, 0, 0,
850	coro_state_clear,	1143	coro_state_free,
851	0,	1144	0,
852	#ifdef MGf_DUP	1145	#ifdef MGf_DUP
853	coro_state_dup,	1146	coro_state_dup,
854	#else	1147	#else
855	# define MGf_DUP 0	1148	# define MGf_DUP 0
856	#endif	1149	#endif
857	};	1150	};
858		1151
859	static struct coro *
860	SvSTATE (SV *coro)
861	{
862	HV *stash;
863	MAGIC *mg;
864
865	if (SvROK (coro))
866	coro = SvRV (coro);
867
868	stash = SvSTASH (coro);
869	if (stash != coro_stash && stash != coro_state_stash)
870	{
871	/* very slow, but rare, check */
872	if (!sv_derived_from (sv_2mortal (newRV_inc (coro)), "Coro::State"))
873	croak ("Coro::State object required");
874	}
875
876	mg = SvMAGIC (coro);
877	assert (mg->mg_type == PERL_MAGIC_ext);
878	return (struct coro *)mg->mg_ptr;
879	}
880
881	static void	1152	static void
882	prepare_transfer (struct transfer_args ta, SV prev_sv, SV *next_sv)	1153	prepare_transfer (pTHX_ struct transfer_args ta, SV prev_sv, SV *next_sv)
883	{	1154	{
884	ta->prev = SvSTATE (prev_sv);	1155	ta->prev = SvSTATE (prev_sv);
885	ta->next = SvSTATE (next_sv);	1156	ta->next = SvSTATE (next_sv);
		1157	TRANSFER_CHECK (*ta);
886	}	1158	}
887		1159
888	static void	1160	static void
889	api_transfer (SV prev_sv, SV next_sv)	1161	api_transfer (SV prev_sv, SV next_sv)
890	{	1162	{
		1163	dTHX;
891	struct transfer_args ta;	1164	struct transfer_args ta;
892		1165
893	prepare_transfer (&ta, prev_sv, next_sv);	1166	prepare_transfer (aTHX_ &ta, prev_sv, next_sv);
894	TRANSFER (ta);	1167	TRANSFER (ta);
895	}	1168	}
896		1169
897	static int	1170	static int
898	api_save (SV *coro_sv, int new_save)	1171	api_save (SV *coro_sv, int new_save)
899	{	1172	{
		1173	dTHX;
900	struct coro *coro = SvSTATE (coro_sv);	1174	struct coro *coro = SvSTATE (coro_sv);
901	int old_save = coro->save;	1175	int old_save = coro->save;
902		1176
903	if (new_save >= 0)	1177	if (new_save >= 0)
904	coro->save = new_save;	1178	coro->save = new_save;
…		…
906	return old_save;	1180	return old_save;
907	}	1181	}
908		1182
909	/ Coro ******************************************************************/	1183	/ Coro ******************************************************************/
910		1184
911	#define PRIO_MAX 3
912	#define PRIO_HIGH 1
913	#define PRIO_NORMAL 0
914	#define PRIO_LOW -1
915	#define PRIO_IDLE -3
916	#define PRIO_MIN -4
917
918	/* for Coro.pm */
919	static SV *coro_current;
920	static AV *coro_ready [PRIO_MAX-PRIO_MIN+1];
921	static int coro_nready;
922
923	static void	1185	static void
924	coro_enq (SV *coro_sv)	1186	coro_enq (pTHX_ SV *coro_sv)
925	{	1187	{
926	av_push (coro_ready [SvSTATE (coro_sv)->prio - PRIO_MIN], coro_sv);	1188	av_push (coro_ready [SvSTATE (coro_sv)->prio - PRIO_MIN], coro_sv);
927	coro_nready++;
928	}	1189	}
929		1190
930	static SV *	1191	static SV *
931	coro_deq (int min_prio)	1192	coro_deq (pTHX_ int min_prio)
932	{	1193	{
933	int prio = PRIO_MAX - PRIO_MIN;	1194	int prio = PRIO_MAX - PRIO_MIN;
934		1195
935	min_prio -= PRIO_MIN;	1196	min_prio -= PRIO_MIN;
936	if (min_prio < 0)	1197	if (min_prio < 0)
937	min_prio = 0;	1198	min_prio = 0;
938		1199
939	for (prio = PRIO_MAX - PRIO_MIN + 1; --prio >= min_prio; )	1200	for (prio = PRIO_MAX - PRIO_MIN + 1; --prio >= min_prio; )
940	if (AvFILLp (coro_ready [prio]) >= 0)	1201	if (AvFILLp (coro_ready [prio]) >= 0)
941	{
942	coro_nready--;
943	return av_shift (coro_ready [prio]);	1202	return av_shift (coro_ready [prio]);
944	}
945		1203
946	return 0;	1204	return 0;
947	}	1205	}
948		1206
949	static int	1207	static int
950	api_ready (SV *coro_sv)	1208	api_ready (SV *coro_sv)
951	{	1209	{
		1210	dTHX;
952	struct coro *coro;	1211	struct coro *coro;
953		1212
954	if (SvROK (coro_sv))	1213	if (SvROK (coro_sv))
955	coro_sv = SvRV (coro_sv);	1214	coro_sv = SvRV (coro_sv);
956		1215
…		…
960	return 0;	1219	return 0;
961		1220
962	coro->flags \|= CF_READY;	1221	coro->flags \|= CF_READY;
963		1222
964	LOCK;	1223	LOCK;
965	coro_enq (SvREFCNT_inc (coro_sv));	1224	coro_enq (aTHX_ SvREFCNT_inc (coro_sv));
		1225	++coro_nready;
966	UNLOCK;	1226	UNLOCK;
967		1227
968	return 1;	1228	return 1;
969	}	1229	}
970		1230
971	static int	1231	static int
972	api_is_ready (SV *coro_sv)	1232	api_is_ready (SV *coro_sv)
973	{	1233	{
		1234	dTHX;
974	return !!SvSTATE (coro_sv)->flags & CF_READY;	1235	return !!(SvSTATE (coro_sv)->flags & CF_READY);
975	}	1236	}
976		1237
977	static void	1238	static void
978	prepare_schedule (struct transfer_args *ta)	1239	prepare_schedule (pTHX_ struct transfer_args *ta)
979	{	1240	{
980	SV prev, next;	1241	SV prev_sv, next_sv;
981		1242
982	for (;;)	1243	for (;;)
983	{	1244	{
984	LOCK;	1245	LOCK;
985	next = coro_deq (PRIO_MIN);	1246	next_sv = coro_deq (aTHX_ PRIO_MIN);
		1247
		1248	/* nothing to schedule: call the idle handler */
		1249	if (!next_sv)
		1250	{
		1251	dSP;
		1252	UNLOCK;
		1253
		1254	ENTER;
		1255	SAVETMPS;
		1256
		1257	PUSHMARK (SP);
		1258	PUTBACK;
		1259	call_sv (get_sv ("Coro::idle", FALSE), G_DISCARD);
		1260
		1261	FREETMPS;
		1262	LEAVE;
		1263	continue;
		1264	}
		1265
		1266	ta->next = SvSTATE (next_sv);
		1267
		1268	/* cannot transfer to destroyed coros, skip and look for next */
		1269	if (ta->next->flags & CF_DESTROYED)
		1270	{
		1271	UNLOCK;
		1272	SvREFCNT_dec (next_sv);
		1273	/* coro_nready is already taken care of by destroy */
		1274	continue;
		1275	}
		1276
		1277	--coro_nready;
986	UNLOCK;	1278	UNLOCK;
987
988	if (next)
989	break;	1279	break;
990
991	{
992	dSP;
993
994	ENTER;
995	SAVETMPS;
996
997	PUSHMARK (SP);
998	PUTBACK;
999	call_sv (get_sv ("Coro::idle", FALSE), G_DISCARD);
1000
1001	FREETMPS;
1002	LEAVE;
1003	}	1280	}
1004	}
1005
1006	prev = SvRV (coro_current);
1007	SvRV_set (coro_current, next);
1008		1281
1009	/* free this only after the transfer */	1282	/* free this only after the transfer */
1010	LOCK;	1283	prev_sv = SvRV (coro_current);
1011	free_coro_mortal ();
1012	UNLOCK;
1013	coro_mortal = prev;
1014
1015	assert (!SvROK(prev));//D
1016	assert (!SvROK(next));//D
1017
1018	ta->prev = SvSTATE (prev);	1284	ta->prev = SvSTATE (prev_sv);
1019	ta->next = SvSTATE (next);	1285	TRANSFER_CHECK (*ta);
1020
1021	assert (ta->next->flags & CF_READY);	1286	assert (ta->next->flags & CF_READY);
1022	ta->next->flags &= ~CF_READY;	1287	ta->next->flags &= ~CF_READY;
		1288	SvRV_set (coro_current, next_sv);
		1289
		1290	LOCK;
		1291	free_coro_mortal (aTHX);
		1292	coro_mortal = prev_sv;
		1293	UNLOCK;
1023	}	1294	}
1024		1295
1025	static void	1296	static void
1026	prepare_cede (struct transfer_args *ta)	1297	prepare_cede (pTHX_ struct transfer_args *ta)
1027	{	1298	{
1028	api_ready (coro_current);	1299	api_ready (coro_current);
1029
1030	prepare_schedule (ta);	1300	prepare_schedule (aTHX_ ta);
		1301	}
		1302
		1303	static int
		1304	prepare_cede_notself (pTHX_ struct transfer_args *ta)
		1305	{
		1306	if (coro_nready)
		1307	{
		1308	SV *prev = SvRV (coro_current);
		1309	prepare_schedule (aTHX_ ta);
		1310	api_ready (prev);
		1311	return 1;
		1312	}
		1313	else
		1314	return 0;
1031	}	1315	}
1032		1316
1033	static void	1317	static void
1034	api_schedule (void)	1318	api_schedule (void)
1035	{	1319	{
		1320	dTHX;
1036	struct transfer_args ta;	1321	struct transfer_args ta;
1037		1322
1038	prepare_schedule (&ta);	1323	prepare_schedule (aTHX_ &ta);
1039	TRANSFER (ta);	1324	TRANSFER (ta);
1040	}	1325	}
1041		1326
		1327	static int
		1328	api_cede (void)
		1329	{
		1330	dTHX;
		1331	struct transfer_args ta;
		1332
		1333	prepare_cede (aTHX_ &ta);
		1334
		1335	if (ta.prev != ta.next)
		1336	{
		1337	TRANSFER (ta);
		1338	return 1;
		1339	}
		1340	else
		1341	return 0;
		1342	}
		1343
		1344	static int
		1345	api_cede_notself (void)
		1346	{
		1347	dTHX;
		1348	struct transfer_args ta;
		1349
		1350	if (prepare_cede_notself (aTHX_ &ta))
		1351	{
		1352	TRANSFER (ta);
		1353	return 1;
		1354	}
		1355	else
		1356	return 0;
		1357	}
		1358
1042	static void	1359	static void
1043	api_cede (void)	1360	api_trace (SV *coro_sv, int flags)
1044	{	1361	{
1045	struct transfer_args ta;	1362	dTHX;
		1363	struct coro *coro = SvSTATE (coro_sv);
1046		1364
1047	prepare_cede (&ta);	1365	if (flags & CC_TRACE)
1048	TRANSFER (ta);	1366	{
1049	}	1367	if (!coro->cctx)
		1368	coro->cctx = cctx_new ();
		1369	else if (!(coro->cctx->flags & CC_TRACE))
		1370	croak ("cannot enable tracing on coroutine with custom stack");
1050		1371
		1372	coro->cctx->flags \|= CC_NOREUSE \| (flags & (CC_TRACE \| CC_TRACE_ALL));
		1373	}
		1374	else if (coro->cctx && coro->cctx->flags & CC_TRACE)
		1375	{
		1376	coro->cctx->flags &= ~(CC_TRACE \| CC_TRACE_ALL);
		1377
		1378	if (coro->flags & CF_RUNNING)
		1379	PL_runops = RUNOPS_DEFAULT;
		1380	else
		1381	coro->runops = RUNOPS_DEFAULT;
		1382	}
		1383	}
		1384
1051	MODULE = Coro::State PACKAGE = Coro::State	1385	MODULE = Coro::State PACKAGE = Coro::State PREFIX = api_
1052		1386
1053	PROTOTYPES: DISABLE	1387	PROTOTYPES: DISABLE
1054		1388
1055	BOOT:	1389	BOOT:
1056	{	1390	{
…		…
1058	MUTEX_INIT (&coro_mutex);	1392	MUTEX_INIT (&coro_mutex);
1059	#endif	1393	#endif
1060	BOOT_PAGESIZE;	1394	BOOT_PAGESIZE;
1061		1395
1062	coro_state_stash = gv_stashpv ("Coro::State", TRUE);	1396	coro_state_stash = gv_stashpv ("Coro::State", TRUE);
		1397
		1398	newCONSTSUB (coro_state_stash, "CC_TRACE" , newSViv (CC_TRACE));
		1399	newCONSTSUB (coro_state_stash, "CC_TRACE_SUB" , newSViv (CC_TRACE_SUB));
		1400	newCONSTSUB (coro_state_stash, "CC_TRACE_LINE", newSViv (CC_TRACE_LINE));
		1401	newCONSTSUB (coro_state_stash, "CC_TRACE_ALL" , newSViv (CC_TRACE_ALL));
1063		1402
1064	newCONSTSUB (coro_state_stash, "SAVE_DEFAV", newSViv (CORO_SAVE_DEFAV));	1403	newCONSTSUB (coro_state_stash, "SAVE_DEFAV", newSViv (CORO_SAVE_DEFAV));
1065	newCONSTSUB (coro_state_stash, "SAVE_DEFSV", newSViv (CORO_SAVE_DEFSV));	1404	newCONSTSUB (coro_state_stash, "SAVE_DEFSV", newSViv (CORO_SAVE_DEFSV));
1066	newCONSTSUB (coro_state_stash, "SAVE_ERRSV", newSViv (CORO_SAVE_ERRSV));	1405	newCONSTSUB (coro_state_stash, "SAVE_ERRSV", newSViv (CORO_SAVE_ERRSV));
1067	newCONSTSUB (coro_state_stash, "SAVE_IRSSV", newSViv (CORO_SAVE_IRSSV));	1406	newCONSTSUB (coro_state_stash, "SAVE_IRSSV", newSViv (CORO_SAVE_IRSSV));
		1407	newCONSTSUB (coro_state_stash, "SAVE_DEFFH", newSViv (CORO_SAVE_DEFFH));
		1408	newCONSTSUB (coro_state_stash, "SAVE_DEF", newSViv (CORO_SAVE_DEF));
1068	newCONSTSUB (coro_state_stash, "SAVE_ALL", newSViv (CORO_SAVE_ALL));	1409	newCONSTSUB (coro_state_stash, "SAVE_ALL", newSViv (CORO_SAVE_ALL));
1069		1410
1070	main_mainstack = PL_mainstack;	1411	main_mainstack = PL_mainstack;
		1412	main_top_env = PL_top_env;
		1413
		1414	while (main_top_env->je_prev)
		1415	main_top_env = main_top_env->je_prev;
1071		1416
1072	coroapi.ver = CORO_API_VERSION;	1417	coroapi.ver = CORO_API_VERSION;
1073	coroapi.transfer = api_transfer;	1418	coroapi.transfer = api_transfer;
1074		1419
1075	assert (("PRIO_NORMAL must be 0", !PRIO_NORMAL));	1420	assert (("PRIO_NORMAL must be 0", !PRIO_NORMAL));
…		…
1083	HV *hv;	1428	HV *hv;
1084	int i;	1429	int i;
1085		1430
1086	Newz (0, coro, 1, struct coro);	1431	Newz (0, coro, 1, struct coro);
1087	coro->args = newAV ();	1432	coro->args = newAV ();
1088	coro->save = CORO_SAVE_ALL;	1433	coro->save = CORO_SAVE_DEF;
1089	coro->flags = CF_NEW;	1434	coro->flags = CF_NEW;
1090		1435
		1436	if (coro_first) coro_first->prev = coro;
		1437	coro->next = coro_first;
		1438	coro_first = coro;
		1439
1091	hv = newHV ();	1440	coro->hv = hv = newHV ();
1092	sv_magicext ((SV )hv, 0, PERL_MAGIC_ext, &coro_state_vtbl, (char )coro, 0)->mg_flags \|= MGf_DUP;	1441	sv_magicext ((SV )hv, 0, PERL_MAGIC_ext, &coro_state_vtbl, (char )coro, 0)->mg_flags \|= MGf_DUP;
1093	RETVAL = sv_bless (newRV_noinc ((SV *)hv), gv_stashpv (klass, 1));	1442	RETVAL = sv_bless (newRV_noinc ((SV *)hv), gv_stashpv (klass, 1));
1094		1443
1095	for (i = 1; i < items; i++)	1444	for (i = 1; i < items; i++)
1096	av_push (coro->args, newSVsv (ST (i)));	1445	av_push (coro->args, newSVsv (ST (i)));
…		…
1103	CODE:	1452	CODE:
1104	RETVAL = api_save (coro, new_save);	1453	RETVAL = api_save (coro, new_save);
1105	OUTPUT:	1454	OUTPUT:
1106	RETVAL	1455	RETVAL
1107		1456
		1457	int
		1458	save_also (SV *coro_sv, int save_also)
		1459	CODE:
		1460	{
		1461	struct coro *coro = SvSTATE (coro_sv);
		1462	RETVAL = coro->save;
		1463	coro->save \|= save_also;
		1464	}
		1465	OUTPUT:
		1466	RETVAL
		1467
1108	void	1468	void
1109	_set_stacklevel (...)	1469	_set_stacklevel (...)
1110	ALIAS:	1470	ALIAS:
1111	Coro::State::transfer = 1	1471	Coro::State::transfer = 1
1112	Coro::schedule = 2	1472	Coro::schedule = 2
1113	Coro::cede = 3	1473	Coro::cede = 3
		1474	Coro::cede_notself = 4
1114	CODE:	1475	CODE:
1115	{	1476	{
1116	struct transfer_args ta;	1477	struct transfer_args ta;
1117		1478
1118	switch (ix)	1479	switch (ix)
…		…
1124		1485
1125	case 1:	1486	case 1:
1126	if (items != 2)	1487	if (items != 2)
1127	croak ("Coro::State::transfer (prev,next) expects two arguments, not %d", items);	1488	croak ("Coro::State::transfer (prev,next) expects two arguments, not %d", items);
1128		1489
1129	prepare_transfer (&ta, ST (0), ST (1));	1490	prepare_transfer (aTHX_ &ta, ST (0), ST (1));
1130	break;	1491	break;
1131		1492
1132	case 2:	1493	case 2:
1133	prepare_schedule (&ta);	1494	prepare_schedule (aTHX_ &ta);
1134	break;	1495	break;
1135		1496
1136	case 3:	1497	case 3:
1137	prepare_cede (&ta);	1498	prepare_cede (aTHX_ &ta);
		1499	break;
		1500
		1501	case 4:
		1502	if (!prepare_cede_notself (aTHX_ &ta))
		1503	XSRETURN_EMPTY;
		1504
1138	break;	1505	break;
1139	}	1506	}
1140		1507
		1508	BARRIER;
1141	TRANSFER (ta);	1509	TRANSFER (ta);
1142	}
1143		1510
1144	void	1511	if (GIMME_V != G_VOID && ta.next != ta.prev)
1145	_clone_state_from (SV dst, SV src)	1512	XSRETURN_YES;
		1513	}
		1514
		1515	bool
		1516	_destroy (SV *coro_sv)
1146	CODE:	1517	CODE:
1147	{	1518	RETVAL = coro_state_destroy (aTHX_ SvSTATE (coro_sv));
1148	struct coro *coro_src = SvSTATE (src);	1519	OUTPUT:
1149		1520	RETVAL
1150	sv_unmagic (SvRV (dst), PERL_MAGIC_ext);
1151
1152	++coro_src->refcnt;
1153	sv_magicext (SvRV (dst), 0, PERL_MAGIC_ext, &coro_state_vtbl, (char *)coro_src, 0)->mg_flags \|= MGf_DUP;
1154	}
1155		1521
1156	void	1522	void
1157	_exit (code)	1523	_exit (code)
1158	int code	1524	int code
1159	PROTOTYPE: $	1525	PROTOTYPE: $
1160	CODE:	1526	CODE:
1161	_exit (code);	1527	_exit (code);
1162		1528
1163	int	1529	int
		1530	cctx_stacksize (int new_stacksize = 0)
		1531	CODE:
		1532	RETVAL = coro_stacksize;
		1533	if (new_stacksize)
		1534	coro_stacksize = new_stacksize;
		1535	OUTPUT:
		1536	RETVAL
		1537
		1538	int
1164	cctx_count ()	1539	cctx_count ()
1165	CODE:	1540	CODE:
1166	RETVAL = cctx_count;	1541	RETVAL = cctx_count;
1167	OUTPUT:	1542	OUTPUT:
1168	RETVAL	1543	RETVAL
…		…
1172	CODE:	1547	CODE:
1173	RETVAL = cctx_idle;	1548	RETVAL = cctx_idle;
1174	OUTPUT:	1549	OUTPUT:
1175	RETVAL	1550	RETVAL
1176		1551
		1552	void
		1553	list ()
		1554	PPCODE:
		1555	{
		1556	struct coro *coro;
		1557	for (coro = coro_first; coro; coro = coro->next)
		1558	if (coro->hv)
		1559	XPUSHs (sv_2mortal (newRV_inc ((SV *)coro->hv)));
		1560	}
		1561
		1562	void
		1563	call (Coro::State coro, SV *coderef)
		1564	ALIAS:
		1565	eval = 1
		1566	CODE:
		1567	{
		1568	if (coro->mainstack)
		1569	{
		1570	struct coro temp;
		1571	Zero (&temp, 1, struct coro);
		1572	temp.save = CORO_SAVE_ALL;
		1573
		1574	if (!(coro->flags & CF_RUNNING))
		1575	{
		1576	save_perl (aTHX_ &temp);
		1577	load_perl (aTHX_ coro);
		1578	}
		1579
		1580	{
		1581	dSP;
		1582	ENTER;
		1583	SAVETMPS;
		1584	PUSHMARK (SP);
		1585	PUTBACK;
		1586	if (ix)
		1587	eval_sv (coderef, 0);
		1588	else
		1589	call_sv (coderef, G_KEEPERR \| G_EVAL \| G_VOID \| G_DISCARD);
		1590	SPAGAIN;
		1591	FREETMPS;
		1592	LEAVE;
		1593	PUTBACK;
		1594	}
		1595
		1596	if (!(coro->flags & CF_RUNNING))
		1597	{
		1598	save_perl (aTHX_ coro);
		1599	load_perl (aTHX_ &temp);
		1600	}
		1601	}
		1602	}
		1603
		1604	SV *
		1605	is_ready (Coro::State coro)
		1606	PROTOTYPE: $
		1607	ALIAS:
		1608	is_ready = CF_READY
		1609	is_running = CF_RUNNING
		1610	is_new = CF_NEW
		1611	is_destroyed = CF_DESTROYED
		1612	CODE:
		1613	RETVAL = boolSV (coro->flags & ix);
		1614	OUTPUT:
		1615	RETVAL
		1616
		1617	void
		1618	api_trace (SV *coro, int flags = CC_TRACE \| CC_TRACE_SUB)
		1619
		1620	SV *
		1621	has_stack (Coro::State coro)
		1622	PROTOTYPE: $
		1623	CODE:
		1624	RETVAL = boolSV (!!coro->cctx);
		1625	OUTPUT:
		1626	RETVAL
		1627
		1628	int
		1629	is_traced (Coro::State coro)
		1630	PROTOTYPE: $
		1631	CODE:
		1632	RETVAL = (coro->cctx ? coro->cctx->flags : 0) & CC_TRACE_ALL;
		1633	OUTPUT:
		1634	RETVAL
		1635
		1636	IV
		1637	rss (Coro::State coro)
		1638	PROTOTYPE: $
		1639	ALIAS:
		1640	usecount = 1
		1641	CODE:
		1642	switch (ix)
		1643	{
		1644	case 0: RETVAL = coro_rss (aTHX_ coro); break;
		1645	case 1: RETVAL = coro->usecount; break;
		1646	}
		1647	OUTPUT:
		1648	RETVAL
		1649
		1650
1177	MODULE = Coro::State PACKAGE = Coro	1651	MODULE = Coro::State PACKAGE = Coro
1178		1652
1179	BOOT:	1653	BOOT:
1180	{	1654	{
1181	int i;	1655	int i;
		1656
		1657	sv_pool_rss = get_sv ("Coro::POOL_RSS" , TRUE);
		1658	sv_pool_size = get_sv ("Coro::POOL_SIZE" , TRUE);
		1659	av_async_pool = get_av ("Coro::async_pool", TRUE);
		1660
		1661	coro_current = get_sv ("Coro::current", FALSE);
		1662	SvREADONLY_on (coro_current);
1182		1663
1183	coro_stash = gv_stashpv ("Coro", TRUE);	1664	coro_stash = gv_stashpv ("Coro", TRUE);
1184		1665
1185	newCONSTSUB (coro_stash, "PRIO_MAX", newSViv (PRIO_MAX));	1666	newCONSTSUB (coro_stash, "PRIO_MAX", newSViv (PRIO_MAX));
1186	newCONSTSUB (coro_stash, "PRIO_HIGH", newSViv (PRIO_HIGH));	1667	newCONSTSUB (coro_stash, "PRIO_HIGH", newSViv (PRIO_HIGH));
1187	newCONSTSUB (coro_stash, "PRIO_NORMAL", newSViv (PRIO_NORMAL));	1668	newCONSTSUB (coro_stash, "PRIO_NORMAL", newSViv (PRIO_NORMAL));
1188	newCONSTSUB (coro_stash, "PRIO_LOW", newSViv (PRIO_LOW));	1669	newCONSTSUB (coro_stash, "PRIO_LOW", newSViv (PRIO_LOW));
1189	newCONSTSUB (coro_stash, "PRIO_IDLE", newSViv (PRIO_IDLE));	1670	newCONSTSUB (coro_stash, "PRIO_IDLE", newSViv (PRIO_IDLE));
1190	newCONSTSUB (coro_stash, "PRIO_MIN", newSViv (PRIO_MIN));	1671	newCONSTSUB (coro_stash, "PRIO_MIN", newSViv (PRIO_MIN));
1191		1672
1192	coro_current = get_sv ("Coro::current", FALSE);
1193	SvREADONLY_on (coro_current);
1194
1195	for (i = PRIO_MAX - PRIO_MIN + 1; i--; )	1673	for (i = PRIO_MAX - PRIO_MIN + 1; i--; )
1196	coro_ready[i] = newAV ();	1674	coro_ready[i] = newAV ();
1197		1675
1198	{	1676	{
1199	SV *sv = perl_get_sv("Coro::API", 1);	1677	SV *sv = perl_get_sv("Coro::API", 1);
1200		1678
1201	coroapi.schedule = api_schedule;	1679	coroapi.schedule = api_schedule;
1202	coroapi.save = api_save;	1680	coroapi.save = api_save;
1203	coroapi.cede = api_cede;	1681	coroapi.cede = api_cede;
		1682	coroapi.cede_notself = api_cede_notself;
1204	coroapi.ready = api_ready;	1683	coroapi.ready = api_ready;
1205	coroapi.is_ready = api_is_ready;	1684	coroapi.is_ready = api_is_ready;
1206	coroapi.nready = &coro_nready;	1685	coroapi.nready = &coro_nready;
1207	coroapi.current = coro_current;	1686	coroapi.current = coro_current;
1208		1687
1209	GCoroAPI = &coroapi;	1688	GCoroAPI = &coroapi;
1210	sv_setiv (sv, (IV)&coroapi);	1689	sv_setiv (sv, (IV)&coroapi);
1211	SvREADONLY_on (sv);	1690	SvREADONLY_on (sv);
1212	}	1691	}
…		…
1228	RETVAL = coro->prio;	1707	RETVAL = coro->prio;
1229		1708
1230	if (items > 1)	1709	if (items > 1)
1231	{	1710	{
1232	if (ix)	1711	if (ix)
1233	newprio += coro->prio;	1712	newprio = coro->prio - newprio;
1234		1713
1235	if (newprio < PRIO_MIN) newprio = PRIO_MIN;	1714	if (newprio < PRIO_MIN) newprio = PRIO_MIN;
1236	if (newprio > PRIO_MAX) newprio = PRIO_MAX;	1715	if (newprio > PRIO_MAX) newprio = PRIO_MAX;
1237		1716
1238	coro->prio = newprio;	1717	coro->prio = newprio;
1239	}	1718	}
1240	}	1719	}
		1720	OUTPUT:
		1721	RETVAL
1241		1722
1242	SV *	1723	SV *
1243	ready (SV *self)	1724	ready (SV *self)
1244	PROTOTYPE: $	1725	PROTOTYPE: $
1245	CODE:	1726	CODE:
1246	RETVAL = boolSV (api_ready (self));	1727	RETVAL = boolSV (api_ready (self));
1247	OUTPUT:	1728	OUTPUT:
1248	RETVAL	1729	RETVAL
1249		1730
1250	SV *
1251	is_ready (SV *self)
1252	PROTOTYPE: $
1253	CODE:
1254	RETVAL = boolSV (api_is_ready (self));
1255	OUTPUT:
1256	RETVAL
1257
1258	int	1731	int
1259	nready (...)	1732	nready (...)
1260	PROTOTYPE:	1733	PROTOTYPE:
1261	CODE:	1734	CODE:
1262	RETVAL = coro_nready;	1735	RETVAL = coro_nready;
1263	OUTPUT:	1736	OUTPUT:
1264	RETVAL	1737	RETVAL
1265		1738
		1739	# for async_pool speedup
		1740	void
		1741	_pool_1 (SV *cb)
		1742	CODE:
		1743	{
		1744	int i, len;
		1745	HV hv = (HV )SvRV (coro_current);
		1746	AV *defav = GvAV (PL_defgv);
		1747	SV *invoke = hv_delete (hv, "_invoke", sizeof ("_invoke") - 1, 0);
		1748	AV *invoke_av;
		1749
		1750	if (!invoke)
		1751	croak ("\3terminate\2\n");
		1752
		1753	hv_store (hv, "desc", sizeof ("desc") - 1,
		1754	newSVpvn ("[async_pool]", sizeof ("[async_pool]") - 1), 0);
		1755
		1756	invoke_av = (AV *)SvRV (invoke);
		1757	len = av_len (invoke_av);
		1758
		1759	sv_setsv (cb, AvARRAY (invoke_av)[0]);
		1760
		1761	if (len > 0)
		1762	{
		1763	av_fill (defav, len - 1);
		1764	for (i = 0; i < len; ++i)
		1765	av_store (defav, i, SvREFCNT_inc (AvARRAY (invoke_av)[i + 1]));
		1766	}
		1767
		1768	SvREFCNT_dec (invoke);
		1769	}
		1770
		1771	void
		1772	_pool_2 (SV *cb)
		1773	CODE:
		1774	{
		1775	struct coro *coro = SvSTATE (coro_current);
		1776
		1777	sv_setsv (cb, &PL_sv_undef);
		1778
		1779	if (coro_rss (aTHX_ coro) > SvIV (sv_pool_rss)
		1780	\|\| av_len (av_async_pool) + 1 >= SvIV (sv_pool_size))
		1781	croak ("\3terminate\2\n");
		1782
		1783	av_clear (GvAV (PL_defgv));
		1784	hv_store ((HV *)SvRV (coro_current), "desc", sizeof ("desc") - 1,
		1785	newSVpvn ("[async_pool idle]", sizeof ("[async_pool idle]") - 1), 0);
		1786	coro->save = CORO_SAVE_DEF;
		1787	coro->prio = 0;
		1788
		1789	if (coro->cctx && (coro->cctx->flags & CC_TRACE))
		1790	api_trace (coro_current, 0);
		1791
		1792	av_push (av_async_pool, newSVsv (coro_current));
		1793	}
		1794
		1795
1266	MODULE = Coro::State PACKAGE = Coro::AIO	1796	MODULE = Coro::State PACKAGE = Coro::AIO
1267		1797
1268	SV *	1798	SV *
1269	_get_state ()	1799	_get_state ()
1270	CODE:	1800	CODE:

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Comparing Coro/Coro/State.xs (file contents): Revision 1.128 by root, Fri Dec 22 04:22:28 2006 UTC vs. Revision 1.174 by root, Sun Sep 30 13:43:18 2007 UTC

Diff Legend

Comparing Coro/Coro/State.xs (file contents):
Revision 1.128 by root, Fri Dec 22 04:22:28 2006 UTC vs.
Revision 1.174 by root, Sun Sep 30 13:43:18 2007 UTC