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

Comparing Coro/Coro/State.xs (file contents):
Revision 1.127 by root, Tue Dec 12 13:56:45 2006 UTC vs.
Revision 1.186 by root, Fri Oct 5 20:10:42 2007 UTC

…		…
1	#include "libcoro/coro.c"	1	#include "libcoro/coro.c"
		2
		3	#define PERL_NO_GET_CONTEXT
2		4
3	#include "EXTERN.h"	5	#include "EXTERN.h"
4	#include "perl.h"	6	#include "perl.h"
5	#include "XSUB.h"	7	#include "XSUB.h"
6		8
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	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
128	static struct coro_cctx *cctx_first;	144	static struct coro_cctx *cctx_first;
129	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	};
130		155
131	/* this is a structure representing a c-level coroutine */	156	/* this is a structure representing a c-level coroutine */
132	typedef struct coro_cctx {	157	typedef struct coro_cctx {
133	struct coro_cctx *next;	158	struct coro_cctx *next;
134		159
135	/* the stack */	160	/* the stack */
136	void *sptr;	161	void *sptr;
137	long ssize; /* positive == mmap, otherwise malloc */	162	size_t ssize;
138		163
139	/* cpu state */	164	/* cpu state */
140	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 */
141	JMPENV *top_env;	167	JMPENV *top_env;
142	coro_context cctx;	168	coro_context cctx;
143		169
144	int inuse;
145
146	#if USE_VALGRIND	170	#if CORO_USE_VALGRIND
147	int valgrind_id;	171	int valgrind_id;
148	#endif	172	#endif
		173	unsigned char flags;
149	} coro_cctx;	174	} coro_cctx;
150		175
151	enum {	176	enum {
152	CF_RUNNING = 0x0001, /* coroutine is running */	177	CF_RUNNING = 0x0001, /* coroutine is running */
153	CF_READY = 0x0002, /* coroutine is ready */	178	CF_READY = 0x0002, /* coroutine is ready */
154	CF_NEW = 0x0004, /* ahs never been switched to */	179	CF_NEW = 0x0004, /* has never been switched to */
		180	CF_DESTROYED = 0x0008, /* coroutine data has been freed */
155	};	181	};
156		182
157	/* this is a structure representing a perl-level coroutine */	183	/* this is a structure representing a perl-level coroutine */
158	struct coro {	184	struct coro {
159	/* the c coroutine allocated to this perl coroutine, if any */	185	/* the c coroutine allocated to this perl coroutine, if any */
160	coro_cctx *cctx;	186	coro_cctx *cctx;
161		187
162	/* data associated with this coroutine (initial args) */	188	/* data associated with this coroutine (initial args) */
163	AV *args;	189	AV *args;
164	int refcnt;	190	int refcnt;
165	int save; /* CORO_SAVE flags */
166	int flags; /* CF_ flags */	191	int flags; /* CF_ flags */
167		192
168	/* optionally saved, might be zero */	193	/* optionally saved, might be zero */
169	AV defav; / @_ */	194	AV defav; / @_ */
170	SV defsv; / $_ */	195	SV defsv; / $_ */
171	SV errsv; / $@ */	196	SV errsv; / $@ */
		197	SV deffh; / default filehandle */
172	SV irssv; / $/ */	198	SV irssv; / $/ */
173	SV irssv_sv; / real $/ cache */	199	SV irssv_sv; / real $/ cache */
174		200
175	#define VAR(name,type) type name;	201	#define VAR(name,type) type name;
176	# include "state.h"	202	# include "state.h"
177	#undef VAR	203	#undef VAR
178		204
		205	/* statistics */
		206	int usecount; /* number of transfers to this coro */
		207
179	/* coro process data */	208	/* coro process data */
180	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 */
181	};	218	};
182		219
183	typedef struct coro *Coro__State;	220	typedef struct coro *Coro__State;
184	typedef struct coro *Coro__State_or_hashref;	221	typedef struct coro *Coro__State_or_hashref;
185		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
186	static AV *	240	static AV *
187	coro_clone_padlist (CV *cv)	241	coro_clone_padlist (pTHX_ CV *cv)
188	{	242	{
189	AV *padlist = CvPADLIST (cv);	243	AV *padlist = CvPADLIST (cv);
190	AV newpadlist, newpad;	244	AV newpadlist, newpad;
191		245
192	newpadlist = newAV ();	246	newpadlist = newAV ();
…		…
204		258
205	return newpadlist;	259	return newpadlist;
206	}	260	}
207		261
208	static void	262	static void
209	free_padlist (AV *padlist)	263	free_padlist (pTHX_ AV *padlist)
210	{	264	{
211	/* may be during global destruction */	265	/* may be during global destruction */
212	if (SvREFCNT (padlist))	266	if (SvREFCNT (padlist))
213	{	267	{
214	I32 i = AvFILLp (padlist);	268	I32 i = AvFILLp (padlist);
…		…
235	AV *padlist;	289	AV *padlist;
236	AV av = (AV )mg->mg_obj;	290	AV av = (AV )mg->mg_obj;
237		291
238	/* casting is fun. */	292	/* casting is fun. */
239	while (&PL_sv_undef != (SV )(padlist = (AV )av_pop (av)))	293	while (&PL_sv_undef != (SV )(padlist = (AV )av_pop (av)))
240	free_padlist (padlist);	294	free_padlist (aTHX_ padlist);
241		295
242	SvREFCNT_dec (av);	296	SvREFCNT_dec (av);
243		297
244	return 0;	298	return 0;
245	}	299	}
…		…
253	? SvMAGIC (cv)->mg_type == PERL_MAGIC_coro \	307	? SvMAGIC (cv)->mg_type == PERL_MAGIC_coro \
254	? SvMAGIC (cv) \	308	? SvMAGIC (cv) \
255	: mg_find ((SV *)cv, PERL_MAGIC_coro) \	309	: mg_find ((SV *)cv, PERL_MAGIC_coro) \
256	: 0	310	: 0
257		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
258	/* the next two functions merely cache the padlists */	338	/* the next two functions merely cache the padlists */
259	static void	339	static void
260	get_padlist (CV *cv)	340	get_padlist (pTHX_ CV *cv)
261	{	341	{
262	MAGIC *mg = CORO_MAGIC (cv);	342	MAGIC *mg = CORO_MAGIC (cv);
263	AV *av;	343	AV *av;
264		344
265	if (mg && AvFILLp ((av = (AV *)mg->mg_obj)) >= 0)	345	if (mg && AvFILLp ((av = (AV *)mg->mg_obj)) >= 0)
266	CvPADLIST (cv) = (AV *)AvARRAY (av)[AvFILLp (av)--];	346	CvPADLIST (cv) = (AV *)AvARRAY (av)[AvFILLp (av)--];
267	else	347	else
268	{	348	{
269	#if PREFER_PERL_FUNCTIONS	349	#if CORO_PREFER_PERL_FUNCTIONS
270	/* this is probably cleaner, but also slower? */	350	/* this is probably cleaner, but also slower? */
271	CV *cp = Perl_cv_clone (cv);	351	CV *cp = Perl_cv_clone (cv);
272	CvPADLIST (cv) = CvPADLIST (cp);	352	CvPADLIST (cv) = CvPADLIST (cp);
273	CvPADLIST (cp) = 0;	353	CvPADLIST (cp) = 0;
274	SvREFCNT_dec (cp);	354	SvREFCNT_dec (cp);
275	#else	355	#else
276	CvPADLIST (cv) = coro_clone_padlist (cv);	356	CvPADLIST (cv) = coro_clone_padlist (aTHX_ cv);
277	#endif	357	#endif
278	}	358	}
279	}	359	}
280		360
281	static void	361	static void
282	put_padlist (CV *cv)	362	put_padlist (pTHX_ CV *cv)
283	{	363	{
284	MAGIC *mg = CORO_MAGIC (cv);	364	MAGIC *mg = CORO_MAGIC (cv);
285	AV *av;	365	AV *av;
286		366
287	if (!mg)	367	if (!mg)
…		…
298	av_extend (av, AvMAX (av) + 1);	378	av_extend (av, AvMAX (av) + 1);
299		379
300	AvARRAY (av)[++AvFILLp (av)] = (SV *)CvPADLIST (cv);	380	AvARRAY (av)[++AvFILLp (av)] = (SV *)CvPADLIST (cv);
301	}	381	}
302		382
303	#define SB do {	383	/ load & save, init *****************************************************/
304	#define SE } while (0)
305		384
306	#define REPLACE_SV(sv,val) SB SvREFCNT_dec (sv); (sv) = (val); (val) = 0; SE
307
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	GvSV (PL_defgv) = c->defsv;
316	if (c->defsv) REPLACE_SV (DEFSV , c->defsv);	393	GvAV (PL_defgv) = c->defav;
317	if (c->errsv) REPLACE_SV (ERRSV , c->errsv);	394	GvSV (PL_errgv) = c->errsv;
318	if (c->irssv)	395	GvSV (irsgv) = c->irssv_sv;
319	{
320	if (c->irssv == PL_rs \|\| sv_eq (PL_rs, c->irssv))
321	SvREFCNT_dec (c->irssv);
322	else
323	{
324	REPLACE_SV (PL_rs, c->irssv);
325	if (!c->irssv_sv) c->irssv_sv = get_sv ("/", 0);
326	sv_setsv (c->irssv_sv, PL_rs);
327	}
328	}
329		396
330	{	397	{
331	dSP;	398	dSP;
332	CV *cv;	399	CV *cv;
333		400
334	/* now do the ugly restore mess */	401	/* now do the ugly restore mess */
335	while ((cv = (CV *)POPs))	402	while ((cv = (CV *)POPs))
336	{	403	{
337	put_padlist (cv); /* mark this padlist as available */	404	put_padlist (aTHX_ cv); /* mark this padlist as available */
338	CvDEPTH (cv) = PTR2IV (POPs);	405	CvDEPTH (cv) = PTR2IV (POPs);
339	CvPADLIST (cv) = (AV *)POPs;	406	CvPADLIST (cv) = (AV *)POPs;
340	}	407	}
341		408
342	PUTBACK;	409	PUTBACK;
343	}	410	}
344	}	411	}
345		412
346	static void	413	static void
347	save_perl (Coro__State c)	414	save_perl (pTHX_ Coro__State c)
348	{	415	{
349	{	416	{
350	dSP;	417	dSP;
351	I32 cxix = cxstack_ix;	418	I32 cxix = cxstack_ix;
352	PERL_CONTEXT *ccstk = cxstack;	419	PERL_CONTEXT *ccstk = cxstack;
…		…
355	/*	422	/*
356	* 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
357	* (and reinitialize) all cv's in the whole callchain :(	424	* (and reinitialize) all cv's in the whole callchain :(
358	*/	425	*/
359		426
360	EXTEND (SP, 3 + 1);
361	PUSHs (Nullsv);	427	XPUSHs (Nullsv);
362	/* this loop was inspired by pp_caller */	428	/* this loop was inspired by pp_caller */
363	for (;;)	429	for (;;)
364	{	430	{
365	while (cxix >= 0)	431	while (cxix >= 0)
366	{	432	{
367	PERL_CONTEXT *cx = &ccstk[cxix--];	433	PERL_CONTEXT *cx = &ccstk[cxix--];
368		434
369	if (CxTYPE (cx) == CXt_SUB)	435	if (CxTYPE (cx) == CXt_SUB \|\| CxTYPE (cx) == CXt_FORMAT)
370	{	436	{
371	CV *cv = cx->blk_sub.cv;	437	CV *cv = cx->blk_sub.cv;
372		438
373	if (CvDEPTH (cv))	439	if (CvDEPTH (cv))
374	{	440	{
…		…
376	PUSHs ((SV *)CvPADLIST (cv));	442	PUSHs ((SV *)CvPADLIST (cv));
377	PUSHs (INT2PTR (SV *, CvDEPTH (cv)));	443	PUSHs (INT2PTR (SV *, CvDEPTH (cv)));
378	PUSHs ((SV *)cv);	444	PUSHs ((SV *)cv);
379		445
380	CvDEPTH (cv) = 0;	446	CvDEPTH (cv) = 0;
381	get_padlist (cv);	447	get_padlist (aTHX_ cv);
382	}	448	}
383	}	449	}
384	}	450	}
385		451
386	if (top_si->si_type == PERLSI_MAIN)	452	if (top_si->si_type == PERLSI_MAIN)
387	break;	453	break;
388		454
389	top_si = top_si->si_prev;	455	top_si = top_si->si_prev;
390	ccstk = top_si->si_cxstack;	456	ccstk = top_si->si_cxstack;
391	cxix = top_si->si_cxix;	457	cxix = top_si->si_cxix;
392	}	458	}
393		459
394	PUTBACK;	460	PUTBACK;
395	}	461	}
396		462
397	c->defav = c->save & CORO_SAVE_DEFAV ? (AV *)SvREFCNT_inc (GvAV (PL_defgv)) : 0;	463	c->defav = GvAV (PL_defgv);
398	c->defsv = c->save & CORO_SAVE_DEFSV ? SvREFCNT_inc (DEFSV) : 0;	464	c->defsv = DEFSV;
399	c->errsv = c->save & CORO_SAVE_ERRSV ? SvREFCNT_inc (ERRSV) : 0;	465	c->errsv = ERRSV;
400	c->irssv = c->save & CORO_SAVE_IRSSV ? SvREFCNT_inc (PL_rs) : 0;	466	c->irssv_sv = GvSV (irsgv);
401		467
402	#define VAR(name,type)c->name = PL_ ## name;	468	#define VAR(name,type)c->name = PL_ ## name;
403	# include "state.h"	469	# include "state.h"
404	#undef VAR	470	#undef VAR
405	}	471	}
…		…
408	* allocate various perl stacks. This is an exact copy	474	* allocate various perl stacks. This is an exact copy
409	* of perl.c:init_stacks, except that it uses less memory	475	* of perl.c:init_stacks, except that it uses less memory
410	* on the (sometimes correct) assumption that coroutines do	476	* on the (sometimes correct) assumption that coroutines do
411	* not usually need a lot of stackspace.	477	* not usually need a lot of stackspace.
412	*/	478	*/
413	#if PREFER_PERL_FUNCTIONS	479	#if CORO_PREFER_PERL_FUNCTIONS
414	# define coro_init_stacks init_stacks	480	# define coro_init_stacks init_stacks
415	#else	481	#else
416	static void	482	static void
417	coro_init_stacks ()	483	coro_init_stacks (pTHX)
418	{	484	{
419	PL_curstackinfo = new_stackinfo(128, 1024/sizeof(PERL_CONTEXT));	485	PL_curstackinfo = new_stackinfo(64, 6);
420	PL_curstackinfo->si_type = PERLSI_MAIN;	486	PL_curstackinfo->si_type = PERLSI_MAIN;
421	PL_curstack = PL_curstackinfo->si_stack;	487	PL_curstack = PL_curstackinfo->si_stack;
422	PL_mainstack = PL_curstack; /* remember in case we switch stacks */	488	PL_mainstack = PL_curstack; /* remember in case we switch stacks */
423		489
424	PL_stack_base = AvARRAY(PL_curstack);	490	PL_stack_base = AvARRAY(PL_curstack);
425	PL_stack_sp = PL_stack_base;	491	PL_stack_sp = PL_stack_base;
426	PL_stack_max = PL_stack_base + AvMAX(PL_curstack);	492	PL_stack_max = PL_stack_base + AvMAX(PL_curstack);
427		493
428	New(50,PL_tmps_stack,128,SV*);	494	New(50,PL_tmps_stack,64,SV*);
429	PL_tmps_floor = -1;	495	PL_tmps_floor = -1;
430	PL_tmps_ix = -1;	496	PL_tmps_ix = -1;
431	PL_tmps_max = 128;	497	PL_tmps_max = 64;
432		498
433	New(54,PL_markstack,32,I32);	499	New(54,PL_markstack,16,I32);
434	PL_markstack_ptr = PL_markstack;	500	PL_markstack_ptr = PL_markstack;
435	PL_markstack_max = PL_markstack + 32;	501	PL_markstack_max = PL_markstack + 16;
436		502
437	#ifdef SET_MARK_OFFSET	503	#ifdef SET_MARK_OFFSET
438	SET_MARK_OFFSET;	504	SET_MARK_OFFSET;
439	#endif	505	#endif
440		506
441	New(54,PL_scopestack,32,I32);	507	New(54,PL_scopestack,16,I32);
442	PL_scopestack_ix = 0;	508	PL_scopestack_ix = 0;
443	PL_scopestack_max = 32;	509	PL_scopestack_max = 16;
444		510
445	New(54,PL_savestack,64,ANY);	511	New(54,PL_savestack,64,ANY);
446	PL_savestack_ix = 0;	512	PL_savestack_ix = 0;
447	PL_savestack_max = 64;	513	PL_savestack_max = 64;
448		514
449	#if !PERL_VERSION_ATLEAST (5,9,0)	515	#if !PERL_VERSION_ATLEAST (5,9,0)
450	New(54,PL_retstack,16,OP*);	516	New(54,PL_retstack,4,OP*);
451	PL_retstack_ix = 0;	517	PL_retstack_ix = 0;
452	PL_retstack_max = 16;	518	PL_retstack_max = 4;
453	#endif	519	#endif
454	}	520	}
455	#endif	521	#endif
456		522
457	/*	523	/*
458	* destroy the stacks, the callchain etc...	524	* destroy the stacks, the callchain etc...
459	*/	525	*/
460	static void	526	static void
461	coro_destroy_stacks ()	527	coro_destroy_stacks (pTHX)
462	{	528	{
463	if (!IN_DESTRUCT)
464	{
465	/* restore all saved variables and stuff */
466	LEAVE_SCOPE (0);
467	assert (PL_tmps_floor == -1);
468
469	/* free all temporaries */
470	FREETMPS;
471	assert (PL_tmps_ix == -1);
472
473	POPSTACK_TO (PL_mainstack);
474	}
475
476	while (PL_curstackinfo->si_next)	529	while (PL_curstackinfo->si_next)
477	PL_curstackinfo = PL_curstackinfo->si_next;	530	PL_curstackinfo = PL_curstackinfo->si_next;
478		531
479	while (PL_curstackinfo)	532	while (PL_curstackinfo)
480	{	533	{
…		…
495	#if !PERL_VERSION_ATLEAST (5,9,0)	548	#if !PERL_VERSION_ATLEAST (5,9,0)
496	Safefree (PL_retstack);	549	Safefree (PL_retstack);
497	#endif	550	#endif
498	}	551	}
499		552
500	static void	553	static size_t
501	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)
502	{	588	{
503	/*	589	/*
504	* emulate part of the perl startup here.	590	* emulate part of the perl startup here.
505	*/	591	*/
506
507	coro_init_stacks ();	592	coro_init_stacks (aTHX);
508		593
		594	PL_runops = RUNOPS_DEFAULT;
509	PL_curcop = &PL_compiling;	595	PL_curcop = &PL_compiling;
510	PL_in_eval = EVAL_NULL;	596	PL_in_eval = EVAL_NULL;
		597	PL_comppad = 0;
511	PL_curpm = 0;	598	PL_curpm = 0;
512	PL_localizing = 0;	599	PL_localizing = 0;
513	PL_dirty = 0;	600	PL_dirty = 0;
514	PL_restartop = 0;	601	PL_restartop = 0;
		602
		603	GvSV (PL_defgv) = NEWSV (0, 0);
		604	GvAV (PL_defgv) = coro->args; coro->args = 0;
		605	GvSV (PL_errgv) = NEWSV (0, 0);
		606	GvSV (irsgv) = newSVpvn ("\n", 1); sv_magic (GvSV (irsgv), (SV *)irsgv, PERL_MAGIC_sv, "/", 0);
		607	PL_rs = newSVsv (GvSV (irsgv));
		608
		609	{
		610	IO *io = newIO ();
		611	PL_defoutgv = (GV *)NEWSV (0, 0);
		612	gv_init (PL_defoutgv, coro_state_stash, "stdout", sizeof ("stdout") - 1, 0);
		613	IoTYPE (io) = IoTYPE_WRONLY;
		614	IoOFP (io) = IoIFP (io) = PerlIO_stdout ();
		615	IoFLAGS (io) \|= IOf_FLUSH;
		616	GvIOp (PL_defoutgv) = io;
		617	}
515		618
516	{	619	{
517	dSP;	620	dSP;
518	LOGOP myop;	621	LOGOP myop;
519		622
520	SvREFCNT_dec (GvAV (PL_defgv));
521	GvAV (PL_defgv) = coro->args; coro->args = 0;
522
523	Zero (&myop, 1, LOGOP);	623	Zero (&myop, 1, LOGOP);
524	myop.op_next = Nullop;	624	myop.op_next = Nullop;
525	myop.op_flags = OPf_WANT_VOID;	625	myop.op_flags = OPf_WANT_VOID;
526		626
527	PUSHMARK (SP);	627	PUSHMARK (SP);
528	XPUSHs ((SV *)get_cv ("Coro::State::_coro_init", FALSE));	628	XPUSHs (av_shift (GvAV (PL_defgv)));
529	PUTBACK;	629	PUTBACK;
530	PL_op = (OP *)&myop;	630	PL_op = (OP *)&myop;
531	PL_op = PL_ppaddr[OP_ENTERSUB](aTHX);	631	PL_op = PL_ppaddr[OP_ENTERSUB](aTHX);
532	SPAGAIN;	632	SPAGAIN;
533	}	633	}
534		634
535	ENTER; /* necessary e.g. for dounwind */	635	ENTER; /* necessary e.g. for dounwind */
536	}	636	}
537		637
538	static void	638	static void
		639	coro_destroy (pTHX_ struct coro *coro)
		640	{
		641	if (!IN_DESTRUCT)
		642	{
		643	/* restore all saved variables and stuff */
		644	LEAVE_SCOPE (0);
		645	assert (PL_tmps_floor == -1);
		646
		647	/* free all temporaries */
		648	FREETMPS;
		649	assert (PL_tmps_ix == -1);
		650
		651	/* unwind all extra stacks */
		652	POPSTACK_TO (PL_mainstack);
		653
		654	/* unwind main stack */
		655	dounwind (-1);
		656	}
		657
		658	SvREFCNT_dec (GvSV (PL_defgv));
		659	SvREFCNT_dec (GvAV (PL_defgv));
		660	SvREFCNT_dec (GvSV (PL_errgv));
		661	SvREFCNT_dec (PL_defoutgv);
		662	SvREFCNT_dec (PL_rs);
		663	SvREFCNT_dec (GvSV (irsgv));
		664
		665	SvREFCNT_dec (coro->saved_deffh);
		666	//SvREFCNT_dec (coro->throw);
		667
		668	coro_destroy_stacks (aTHX);
		669	}
		670
		671	static void
539	free_coro_mortal ()	672	free_coro_mortal (pTHX)
540	{	673	{
541	if (coro_mortal)	674	if (coro_mortal)
542	{	675	{
543	SvREFCNT_dec (coro_mortal);	676	SvREFCNT_dec (coro_mortal);
544	coro_mortal = 0;	677	coro_mortal = 0;
545	}	678	}
546	}	679	}
547		680
		681	static int
		682	runops_trace (pTHX)
		683	{
		684	COP *oldcop = 0;
		685	int oldcxix = -2;
		686	struct coro coro = SvSTATE (coro_current); / trace cctx is tied to specific coro */
		687	coro_cctx *cctx = coro->cctx;
		688
		689	while ((PL_op = CALL_FPTR (PL_op->op_ppaddr) (aTHX)))
		690	{
		691	PERL_ASYNC_CHECK ();
		692
		693	if (cctx->flags & CC_TRACE_ALL)
		694	{
		695	if (PL_op->op_type == OP_LEAVESUB && cctx->flags & CC_TRACE_SUB)
		696	{
		697	PERL_CONTEXT *cx = &cxstack[cxstack_ix];
		698	SV bot, top;
		699	AV av = newAV (); / return values */
		700	SV **cb;
		701	dSP;
		702
		703	GV *gv = CvGV (cx->blk_sub.cv);
		704	SV *fullname = sv_2mortal (newSV (0));
		705	if (isGV (gv))
		706	gv_efullname3 (fullname, gv, 0);
		707
		708	bot = PL_stack_base + cx->blk_oldsp + 1;
		709	top = cx->blk_gimme == G_ARRAY ? SP + 1
		710	: cx->blk_gimme == G_SCALAR ? bot + 1
		711	: bot;
		712
		713	while (bot < top)
		714	av_push (av, SvREFCNT_inc (*bot++));
		715
		716	PL_runops = RUNOPS_DEFAULT;
		717	ENTER;
		718	SAVETMPS;
		719	EXTEND (SP, 3);
		720	PUSHMARK (SP);
		721	PUSHs (&PL_sv_no);
		722	PUSHs (fullname);
		723	PUSHs (sv_2mortal (newRV_noinc ((SV *)av)));
		724	PUTBACK;
		725	cb = hv_fetch ((HV *)SvRV (coro_current), "_trace_sub_cb", sizeof ("_trace_sub_cb") - 1, 0);
		726	if (cb) call_sv (*cb, G_KEEPERR \| G_EVAL \| G_VOID \| G_DISCARD);
		727	SPAGAIN;
		728	FREETMPS;
		729	LEAVE;
		730	PL_runops = runops_trace;
		731	}
		732
		733	if (oldcop != PL_curcop)
		734	{
		735	oldcop = PL_curcop;
		736
		737	if (PL_curcop != &PL_compiling)
		738	{
		739	SV **cb;
		740
		741	if (oldcxix != cxstack_ix && cctx->flags & CC_TRACE_SUB)
		742	{
		743	PERL_CONTEXT *cx = &cxstack[cxstack_ix];
		744
		745	if (CxTYPE (cx) == CXt_SUB && oldcxix < cxstack_ix)
		746	{
		747	runops_proc_t old_runops = PL_runops;
		748	dSP;
		749	GV *gv = CvGV (cx->blk_sub.cv);
		750	SV *fullname = sv_2mortal (newSV (0));
		751
		752	if (isGV (gv))
		753	gv_efullname3 (fullname, gv, 0);
		754
		755	PL_runops = RUNOPS_DEFAULT;
		756	ENTER;
		757	SAVETMPS;
		758	EXTEND (SP, 3);
		759	PUSHMARK (SP);
		760	PUSHs (&PL_sv_yes);
		761	PUSHs (fullname);
		762	PUSHs (cx->blk_sub.hasargs ? sv_2mortal (newRV_inc ((SV *)cx->blk_sub.argarray)) : &PL_sv_undef);
		763	PUTBACK;
		764	cb = hv_fetch ((HV *)SvRV (coro_current), "_trace_sub_cb", sizeof ("_trace_sub_cb") - 1, 0);
		765	if (cb) call_sv (*cb, G_KEEPERR \| G_EVAL \| G_VOID \| G_DISCARD);
		766	SPAGAIN;
		767	FREETMPS;
		768	LEAVE;
		769	PL_runops = runops_trace;
		770	}
		771
		772	oldcxix = cxstack_ix;
		773	}
		774
		775	if (cctx->flags & CC_TRACE_LINE)
		776	{
		777	dSP;
		778
		779	PL_runops = RUNOPS_DEFAULT;
		780	ENTER;
		781	SAVETMPS;
		782	EXTEND (SP, 3);
		783	PL_runops = RUNOPS_DEFAULT;
		784	PUSHMARK (SP);
		785	PUSHs (sv_2mortal (newSVpv (OutCopFILE (oldcop), 0)));
		786	PUSHs (sv_2mortal (newSViv (CopLINE (oldcop))));
		787	PUTBACK;
		788	cb = hv_fetch ((HV *)SvRV (coro_current), "_trace_line_cb", sizeof ("_trace_line_cb") - 1, 0);
		789	if (cb) call_sv (*cb, G_KEEPERR \| G_EVAL \| G_VOID \| G_DISCARD);
		790	SPAGAIN;
		791	FREETMPS;
		792	LEAVE;
		793	PL_runops = runops_trace;
		794	}
		795	}
		796	}
		797	}
		798	}
		799
		800	TAINT_NOT;
		801	return 0;
		802	}
		803
548	/* inject a fake call to Coro::State::_cctx_init into the execution */	804	/* inject a fake call to Coro::State::_cctx_init into the execution */
		805	/* _cctx_init should be careful, as it could be called at almost any time */
		806	/* during execution of a perl program */
549	static void NOINLINE	807	static void NOINLINE
550	prepare_cctx (coro_cctx *cctx)	808	prepare_cctx (pTHX_ coro_cctx *cctx)
551	{	809	{
552	dSP;	810	dSP;
553	LOGOP myop;	811	LOGOP myop;
		812
		813	PL_top_env = &PL_start_env;
		814
		815	if (cctx->flags & CC_TRACE)
		816	PL_runops = runops_trace;
554		817
555	Zero (&myop, 1, LOGOP);	818	Zero (&myop, 1, LOGOP);
556	myop.op_next = PL_op;	819	myop.op_next = PL_op;
557	myop.op_flags = OPf_WANT_VOID \| OPf_STACKED;	820	myop.op_flags = OPf_WANT_VOID \| OPf_STACKED;
558		821
…		…
564	PL_op = (OP *)&myop;	827	PL_op = (OP *)&myop;
565	PL_op = PL_ppaddr[OP_ENTERSUB](aTHX);	828	PL_op = PL_ppaddr[OP_ENTERSUB](aTHX);
566	SPAGAIN;	829	SPAGAIN;
567	}	830	}
568		831
		832	/*
		833	* this is a _very_ stripped down perl interpreter ;)
		834	*/
569	static void	835	static void
570	coro_run (void *arg)	836	coro_run (void *arg)
571	{	837	{
		838	dTHX;
		839
572	/* coro_run is the alternative tail of transfer(), so unlock here. */	840	/* coro_run is the alternative tail of transfer(), so unlock here. */
573	UNLOCK;	841	UNLOCK;
574		842
575	/*	843	/* we now skip the entersub that lead to transfer() */
576	* this is a _very_ stripped down perl interpreter ;)	844	PL_op = PL_op->op_next;
577	*/
578	PL_top_env = &PL_start_env;
579		845
580	/* inject call to cctx_init */	846	/* inject a fake subroutine call to cctx_init */
581	prepare_cctx ((coro_cctx *)arg);	847	prepare_cctx (aTHX_ (coro_cctx *)arg);
582		848
583	/* somebody will hit me for both perl_run and PL_restartop */	849	/* somebody or something will hit me for both perl_run and PL_restartop */
584	PL_restartop = PL_op;	850	PL_restartop = PL_op;
585	perl_run (PL_curinterp);	851	perl_run (PL_curinterp);
586		852
587	fputs ("FATAL: C coroutine fell over the edge of the world, aborting. Did you call exit in a coroutine?\n", stderr);	853	/*
588	abort ();	854	* If perl-run returns we assume exit() was being called or the coro
		855	* fell off the end, which seems to be the only valid (non-bug)
		856	* reason for perl_run to return. We try to exit by jumping to the
		857	* bootstrap-time "top" top_env, as we cannot restore the "main"
		858	* coroutine as Coro has no such concept
		859	*/
		860	PL_top_env = main_top_env;
		861	JMPENV_JUMP (2); /* I do not feel well about the hardcoded 2 at all */
589	}	862	}
590		863
591	static coro_cctx *	864	static coro_cctx *
592	cctx_new ()	865	cctx_new ()
593	{	866	{
594	coro_cctx *cctx;	867	coro_cctx *cctx;
		868	void *stack_start;
		869	size_t stack_size;
595		870
596	++cctx_count;	871	++cctx_count;
597		872
598	Newz (0, cctx, 1, coro_cctx);	873	Newz (0, cctx, 1, coro_cctx);
599		874
600	#if HAVE_MMAP	875	#if HAVE_MMAP
601		876
602	cctx->ssize = ((STACKSIZE * sizeof (long) + PAGESIZE - 1) / PAGESIZE + STACKGUARD) * PAGESIZE;	877	cctx->ssize = ((coro_stacksize * sizeof (long) + PAGESIZE - 1) / PAGESIZE + CORO_STACKGUARD) * PAGESIZE;
603	/* mmap supposedly does allocate-on-write for us */	878	/* 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);	879	cctx->sptr = mmap (0, cctx->ssize, PROT_EXEC\|PROT_READ\|PROT_WRITE, MAP_PRIVATE\|MAP_ANONYMOUS, 0, 0);
605		880
606	if (cctx->sptr == (void *)-1)	881	if (cctx->sptr != (void *)-1)
607	{
608	perror ("FATAL: unable to mmap stack for coroutine");
609	_exit (EXIT_FAILURE);
610	}	882	{
611
612	# if STACKGUARD	883	# if CORO_STACKGUARD
613	mprotect (cctx->sptr, STACKGUARD * PAGESIZE, PROT_NONE);	884	mprotect (cctx->sptr, CORO_STACKGUARD * PAGESIZE, PROT_NONE);
614	# endif	885	# endif
		886	stack_start = CORO_STACKGUARD * PAGESIZE + (char *)cctx->sptr;
		887	stack_size = cctx->ssize - CORO_STACKGUARD * PAGESIZE;
		888	cctx->flags \|= CC_MAPPED;
		889	}
		890	else
		891	#endif
		892	{
		893	cctx->ssize = coro_stacksize * (long)sizeof (long);
		894	New (0, cctx->sptr, coro_stacksize, long);
615		895
616	#else
617
618	cctx->ssize = STACKSIZE * (long)sizeof (long);
619	New (0, cctx->sptr, STACKSIZE, long);
620
621	if (!cctx->sptr)	896	if (!cctx->sptr)
622	{	897	{
623	perror ("FATAL: unable to malloc stack for coroutine");	898	perror ("FATAL: unable to allocate stack for coroutine");
624	_exit (EXIT_FAILURE);	899	_exit (EXIT_FAILURE);
625	}	900	}
626		901
627	#endif	902	stack_start = cctx->sptr;
		903	stack_size = cctx->ssize;
		904	}
628		905
629	#if USE_VALGRIND	906	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);	907	coro_create (&cctx->cctx, coro_run, (void *)cctx, stack_start, stack_size);
637		908
638	return cctx;	909	return cctx;
639	}	910	}
640		911
641	static void	912	static void
…		…
644	if (!cctx)	915	if (!cctx)
645	return;	916	return;
646		917
647	--cctx_count;	918	--cctx_count;
648		919
649	#if USE_VALGRIND	920	#if CORO_USE_VALGRIND
650	VALGRIND_STACK_DEREGISTER (cctx->valgrind_id);	921	VALGRIND_STACK_DEREGISTER (cctx->valgrind_id);
651	#endif	922	#endif
652		923
653	#if HAVE_MMAP	924	#if HAVE_MMAP
		925	if (cctx->flags & CC_MAPPED)
654	munmap (cctx->sptr, cctx->ssize);	926	munmap (cctx->sptr, cctx->ssize);
655	#else	927	else
		928	#endif
656	Safefree (cctx->sptr);	929	Safefree (cctx->sptr);
657	#endif
658		930
659	Safefree (cctx);	931	Safefree (cctx);
660	}	932	}
661		933
662	static coro_cctx *	934	static coro_cctx *
663	cctx_get ()	935	cctx_get (pTHX)
664	{	936	{
665	coro_cctx *cctx;
666
667	if (cctx_first)	937	while (cctx_first)
668	{	938	{
669	cctx = cctx_first;	939	coro_cctx *cctx = cctx_first;
670	cctx_first = cctx->next;	940	cctx_first = cctx->next;
671	--cctx_idle;	941	--cctx_idle;
672	}	942
673	else	943	if (cctx->ssize >= coro_stacksize && !(cctx->flags & CC_NOREUSE))
674	{	944	return cctx;
675	cctx = cctx_new ();	945
676	PL_op = PL_op->op_next;	946	cctx_destroy (cctx);
677	}	947	}
678		948
679	return cctx;	949	return cctx_new ();
680	}	950	}
681		951
682	static void	952	static void
683	cctx_put (coro_cctx *cctx)	953	cctx_put (coro_cctx *cctx)
684	{	954	{
…		…
687	{	957	{
688	coro_cctx *first = cctx_first;	958	coro_cctx *first = cctx_first;
689	cctx_first = first->next;	959	cctx_first = first->next;
690	--cctx_idle;	960	--cctx_idle;
691		961
692	assert (!first->inuse);
693	cctx_destroy (first);	962	cctx_destroy (first);
694	}	963	}
695		964
696	++cctx_idle;	965	++cctx_idle;
697	cctx->next = cctx_first;	966	cctx->next = cctx_first;
698	cctx_first = cctx;	967	cctx_first = cctx;
699	}	968	}
700		969
701	/* never call directly, always through the coro_state_transfer global variable */	970	/ coroutine switching ***************************************************/
		971
702	static void NOINLINE	972	static void NOINLINE
		973	transfer_check (pTHX_ struct coro prev, struct coro next)
		974	{
		975	if (prev != next)
		976	{
		977	if (!(prev->flags & (CF_RUNNING \| CF_NEW)))
		978	croak ("Coro::State::transfer called with non-running/new prev Coro::State, but can only transfer from running or new states");
		979
		980	if (next->flags & CF_RUNNING)
		981	croak ("Coro::State::transfer called with running next Coro::State, but can only transfer to inactive states");
		982
		983	if (next->flags & CF_DESTROYED)
		984	croak ("Coro::State::transfer called with destroyed next Coro::State, but can only transfer to inactive states");
		985
		986	if (PL_lex_state != LEX_NOTPARSING)
		987	croak ("Coro::State::transfer called while parsing, but this is not supported");
		988	}
		989	}
		990
		991	/* always use the TRANSFER macro */
		992	static void NOINLINE
703	transfer (struct coro prev, struct coro next)	993	transfer (pTHX_ struct coro prev, struct coro next)
704	{	994	{
705	dSTACKLEVEL;	995	dSTACKLEVEL;
706		996
707	/* sometimes transfer is only called to set idle_sp */	997	/* sometimes transfer is only called to set idle_sp */
708	if (!next)	998	if (!next)
709	{	999	{
710	((coro_cctx *)prev)->idle_sp = STACKLEVEL;	1000	((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 */	1001	assert (((coro_cctx )prev)->idle_te = PL_top_env); / just for the side-effect when asserts are enabled */
712	}	1002	}
713	else if (prev != next)	1003	else if (prev != next)
714	{	1004	{
715	coro_cctx *prev__cctx;	1005	coro_cctx *prev__cctx;
716		1006
717	if (prev->flags & CF_NEW)	1007	if (prev->flags & CF_NEW)
718	{	1008	{
719	/* create a new empty context */	1009	/* create a new empty context */
720	Newz (0, prev->cctx, 1, coro_cctx);	1010	Newz (0, prev->cctx, 1, coro_cctx);
721	prev->cctx->inuse = 1;
722	prev->flags &= ~CF_NEW;	1011	prev->flags &= ~CF_NEW;
723	prev->flags \|= CF_RUNNING;	1012	prev->flags \|= CF_RUNNING;
724	}	1013	}
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		1014
733	prev->flags &= ~CF_RUNNING;	1015	prev->flags &= ~CF_RUNNING;
734	next->flags \|= CF_RUNNING;	1016	next->flags \|= CF_RUNNING;
735		1017
736	LOCK;	1018	LOCK;
…		…
738	if (next->flags & CF_NEW)	1020	if (next->flags & CF_NEW)
739	{	1021	{
740	/* need to start coroutine */	1022	/* need to start coroutine */
741	next->flags &= ~CF_NEW;	1023	next->flags &= ~CF_NEW;
742	/* first get rid of the old state */	1024	/* first get rid of the old state */
743	save_perl (prev);	1025	save_perl (aTHX_ prev);
744	/* setup coroutine call */	1026	/* setup coroutine call */
745	setup_coro (next);	1027	coro_setup (aTHX_ next);
746	/* need a new stack */
747	assert (!next->cctx);
748	}	1028	}
749	else	1029	else
750	{	1030	{
751	/* coroutine already started */	1031	/* coroutine already started */
752	save_perl (prev);	1032	save_perl (aTHX_ prev);
753	load_perl (next);	1033	load_perl (aTHX_ next);
754	}	1034	}
755		1035
756	prev__cctx = prev->cctx;	1036	prev__cctx = prev->cctx;
757		1037
758	/* possibly "free" the cctx */	1038	/* possibly "free" the cctx */
759	if (prev__cctx->idle_sp == STACKLEVEL)	1039	if (prev__cctx->idle_sp == STACKLEVEL && !(prev__cctx->flags & CC_TRACE))
760	{	1040	{
761	/* I assume that STACKLEVEL is a stronger indicator than PL_top_env changes */	1041	/* I assume that STACKLEVEL is a stronger indicator than PL_top_env changes */
762	assert (PL_top_env == prev__cctx->top_env);	1042	assert (("ERROR: current top_env must equal previous top_env", PL_top_env == prev__cctx->idle_te));
763		1043
764	prev->cctx = 0;	1044	prev->cctx = 0;
765		1045
766	cctx_put (prev__cctx);	1046	cctx_put (prev__cctx);
767	prev__cctx->inuse = 0;
768	}	1047	}
769		1048
		1049	++next->usecount;
		1050
770	if (!next->cctx)	1051	if (!next->cctx)
771	{
772	next->cctx = cctx_get ();	1052	next->cctx = cctx_get (aTHX);
773	assert (!next->cctx->inuse);
774	next->cctx->inuse = 1;
775	}
776		1053
777	if (prev__cctx != next->cctx)	1054	if (prev__cctx != next->cctx)
778	{	1055	{
779	prev__cctx->top_env = PL_top_env;	1056	prev__cctx->top_env = PL_top_env;
780	PL_top_env = next->cctx->top_env;	1057	PL_top_env = next->cctx->top_env;
781	coro_transfer (&prev__cctx->cctx, &next->cctx->cctx);	1058	coro_transfer (&prev__cctx->cctx, &next->cctx->cctx);
782	}	1059	}
783		1060
784	free_coro_mortal ();	1061	free_coro_mortal (aTHX);
785
786	UNLOCK;	1062	UNLOCK;
787	}	1063	}
788	}	1064	}
789		1065
790	struct transfer_args	1066	struct transfer_args
791	{	1067	{
792	struct coro prev, next;	1068	struct coro prev, next;
793	};	1069	};
794		1070
795	#define TRANSFER(ta) transfer ((ta).prev, (ta).next)	1071	#define TRANSFER(ta) transfer (aTHX_ (ta).prev, (ta).next)
		1072	#define TRANSFER_CHECK(ta) transfer_check (aTHX_ (ta).prev, (ta).next)
796		1073
		1074	/ high level stuff ******************************************************/
		1075
797	static void	1076	static int
798	coro_state_destroy (struct coro *coro)	1077	coro_state_destroy (pTHX_ struct coro *coro)
799	{	1078	{
800	if (coro->refcnt--)	1079	if (coro->flags & CF_DESTROYED)
801	return;	1080	return 0;
		1081
		1082	coro->flags \|= CF_DESTROYED;
		1083
		1084	if (coro->flags & CF_READY)
		1085	{
		1086	/* reduce nready, as destroying a ready coro effectively unreadies it */
		1087	/* alternative: look through all ready queues and remove the coro */
		1088	LOCK;
		1089	--coro_nready;
		1090	UNLOCK;
		1091	}
		1092	else
		1093	coro->flags \|= CF_READY; /* make sure it is NOT put into the readyqueue */
802		1094
803	if (coro->mainstack && coro->mainstack != main_mainstack)	1095	if (coro->mainstack && coro->mainstack != main_mainstack)
804	{	1096	{
805	struct coro temp;	1097	struct coro temp;
806	Zero (&temp, 1, struct coro);
807	temp.save = CORO_SAVE_ALL;
808		1098
809	if (coro->flags & CF_RUNNING)	1099	if (coro->flags & CF_RUNNING)
810	croak ("FATAL: tried to destroy currently running coroutine");	1100	croak ("FATAL: tried to destroy currently running coroutine");
811		1101
812	save_perl (&temp);	1102	save_perl (aTHX_ &temp);
813	load_perl (coro);	1103	load_perl (aTHX_ coro);
814		1104
815	coro_destroy_stacks ();	1105	coro_destroy (aTHX_ coro);
816		1106
817	load_perl (&temp); /* this will get rid of defsv etc.. */	1107	load_perl (aTHX_ &temp); /* this will get rid of defsv etc.. */
818		1108
819	coro->mainstack = 0;	1109	coro->mainstack = 0;
820	}	1110	}
821		1111
822	cctx_destroy (coro->cctx);	1112	cctx_destroy (coro->cctx);
823	SvREFCNT_dec (coro->args);	1113	SvREFCNT_dec (coro->args);
824	Safefree (coro);	1114
		1115	if (coro->next) coro->next->prev = coro->prev;
		1116	if (coro->prev) coro->prev->next = coro->next;
		1117	if (coro == coro_first) coro_first = coro->next;
		1118
		1119	return 1;
825	}	1120	}
826		1121
827	static int	1122	static int
828	coro_state_clear (pTHX_ SV sv, MAGIC mg)	1123	coro_state_free (pTHX_ SV sv, MAGIC mg)
829	{	1124	{
830	struct coro coro = (struct coro )mg->mg_ptr;	1125	struct coro coro = (struct coro )mg->mg_ptr;
831	mg->mg_ptr = 0;	1126	mg->mg_ptr = 0;
832		1127
		1128	coro->hv = 0;
		1129
		1130	if (--coro->refcnt < 0)
		1131	{
833	coro_state_destroy (coro);	1132	coro_state_destroy (aTHX_ coro);
		1133	Safefree (coro);
		1134	}
834		1135
835	return 0;	1136	return 0;
836	}	1137	}
837		1138
838	static int	1139	static int
…		…
845	return 0;	1146	return 0;
846	}	1147	}
847		1148
848	static MGVTBL coro_state_vtbl = {	1149	static MGVTBL coro_state_vtbl = {
849	0, 0, 0, 0,	1150	0, 0, 0, 0,
850	coro_state_clear,	1151	coro_state_free,
851	0,	1152	0,
852	#ifdef MGf_DUP	1153	#ifdef MGf_DUP
853	coro_state_dup,	1154	coro_state_dup,
854	#else	1155	#else
855	# define MGf_DUP 0	1156	# define MGf_DUP 0
856	#endif	1157	#endif
857	};	1158	};
858		1159
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	1160	static void
882	prepare_transfer (struct transfer_args ta, SV prev_sv, SV *next_sv)	1161	prepare_transfer (pTHX_ struct transfer_args ta, SV prev_sv, SV *next_sv)
883	{	1162	{
884	ta->prev = SvSTATE (prev_sv);	1163	ta->prev = SvSTATE (prev_sv);
885	ta->next = SvSTATE (next_sv);	1164	ta->next = SvSTATE (next_sv);
		1165	TRANSFER_CHECK (*ta);
886	}	1166	}
887		1167
888	static void	1168	static void
889	api_transfer (SV prev_sv, SV next_sv)	1169	api_transfer (SV prev_sv, SV next_sv)
890	{	1170	{
		1171	dTHX;
891	struct transfer_args ta;	1172	struct transfer_args ta;
892		1173
893	prepare_transfer (&ta, prev_sv, next_sv);	1174	prepare_transfer (aTHX_ &ta, prev_sv, next_sv);
894	TRANSFER (ta);	1175	TRANSFER (ta);
895	}	1176	}
896		1177
897	static int
898	api_save (SV *coro_sv, int new_save)
899	{
900	struct coro *coro = SvSTATE (coro_sv);
901	int old_save = coro->save;
902
903	if (new_save >= 0)
904	coro->save = new_save;
905
906	return old_save;
907	}
908
909	/ Coro ******************************************************************/	1178	/ Coro ******************************************************************/
910		1179
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	1180	static void
924	coro_enq (SV *coro_sv)	1181	coro_enq (pTHX_ SV *coro_sv)
925	{	1182	{
926	av_push (coro_ready [SvSTATE (coro_sv)->prio - PRIO_MIN], coro_sv);	1183	av_push (coro_ready [SvSTATE (coro_sv)->prio - PRIO_MIN], coro_sv);
927	coro_nready++;
928	}	1184	}
929		1185
930	static SV *	1186	static SV *
931	coro_deq (int min_prio)	1187	coro_deq (pTHX_ int min_prio)
932	{	1188	{
933	int prio = PRIO_MAX - PRIO_MIN;	1189	int prio = PRIO_MAX - PRIO_MIN;
934		1190
935	min_prio -= PRIO_MIN;	1191	min_prio -= PRIO_MIN;
936	if (min_prio < 0)	1192	if (min_prio < 0)
937	min_prio = 0;	1193	min_prio = 0;
938		1194
939	for (prio = PRIO_MAX - PRIO_MIN + 1; --prio >= min_prio; )	1195	for (prio = PRIO_MAX - PRIO_MIN + 1; --prio >= min_prio; )
940	if (AvFILLp (coro_ready [prio]) >= 0)	1196	if (AvFILLp (coro_ready [prio]) >= 0)
941	{
942	coro_nready--;
943	return av_shift (coro_ready [prio]);	1197	return av_shift (coro_ready [prio]);
944	}
945		1198
946	return 0;	1199	return 0;
947	}	1200	}
948		1201
949	static int	1202	static int
950	api_ready (SV *coro_sv)	1203	api_ready (SV *coro_sv)
951	{	1204	{
		1205	dTHX;
952	struct coro *coro;	1206	struct coro *coro;
953		1207
954	if (SvROK (coro_sv))	1208	if (SvROK (coro_sv))
955	coro_sv = SvRV (coro_sv);	1209	coro_sv = SvRV (coro_sv);
956		1210
957	coro = SvSTATE (coro_sv);	1211	coro = SvSTATE (coro_sv);
958		1212
959	if (coro->flags & CF_READY)	1213	if (coro->flags & CF_READY)
960	return 0;	1214	return 0;
961		1215
962	#if 0 /* this is actually harmless */
963	if (coro->flags & CF_RUNNING)
964	croak ("Coro::ready called on currently running coroutine");
965	#endif
966
967	coro->flags \|= CF_READY;	1216	coro->flags \|= CF_READY;
968		1217
969	LOCK;	1218	LOCK;
970	coro_enq (SvREFCNT_inc (coro_sv));	1219	coro_enq (aTHX_ SvREFCNT_inc (coro_sv));
		1220	++coro_nready;
971	UNLOCK;	1221	UNLOCK;
972		1222
973	return 1;	1223	return 1;
974	}	1224	}
975		1225
976	static int	1226	static int
977	api_is_ready (SV *coro_sv)	1227	api_is_ready (SV *coro_sv)
978	{	1228	{
		1229	dTHX;
979	return !!SvSTATE (coro_sv)->flags & CF_READY;	1230	return !!(SvSTATE (coro_sv)->flags & CF_READY);
980	}	1231	}
981		1232
982	static void	1233	static void
983	prepare_schedule (struct transfer_args *ta)	1234	prepare_schedule (pTHX_ struct transfer_args *ta)
984	{	1235	{
985	SV prev, next;	1236	SV prev_sv, next_sv;
986		1237
987	for (;;)	1238	for (;;)
988	{	1239	{
989	LOCK;	1240	LOCK;
990	next = coro_deq (PRIO_MIN);	1241	next_sv = coro_deq (aTHX_ PRIO_MIN);
		1242
		1243	/* nothing to schedule: call the idle handler */
		1244	if (!next_sv)
		1245	{
		1246	dSP;
		1247	UNLOCK;
		1248
		1249	ENTER;
		1250	SAVETMPS;
		1251
		1252	PUSHMARK (SP);
		1253	PUTBACK;
		1254	call_sv (get_sv ("Coro::idle", FALSE), G_DISCARD);
		1255
		1256	FREETMPS;
		1257	LEAVE;
		1258	continue;
		1259	}
		1260
		1261	ta->next = SvSTATE (next_sv);
		1262
		1263	/* cannot transfer to destroyed coros, skip and look for next */
		1264	if (ta->next->flags & CF_DESTROYED)
		1265	{
		1266	UNLOCK;
		1267	SvREFCNT_dec (next_sv);
		1268	/* coro_nready is already taken care of by destroy */
		1269	continue;
		1270	}
		1271
		1272	--coro_nready;
991	UNLOCK;	1273	UNLOCK;
992
993	if (next)
994	break;	1274	break;
995
996	{
997	dSP;
998
999	ENTER;
1000	SAVETMPS;
1001
1002	PUSHMARK (SP);
1003	PUTBACK;
1004	call_sv (get_sv ("Coro::idle", FALSE), G_DISCARD);
1005
1006	FREETMPS;
1007	LEAVE;
1008	}	1275	}
1009	}
1010
1011	prev = SvRV (coro_current);
1012	SvRV_set (coro_current, next);
1013		1276
1014	/* free this only after the transfer */	1277	/* free this only after the transfer */
1015	LOCK;	1278	prev_sv = SvRV (coro_current);
1016	free_coro_mortal ();
1017	UNLOCK;
1018	coro_mortal = prev;
1019
1020	assert (!SvROK(prev));//D
1021	assert (!SvROK(next));//D
1022
1023	ta->prev = SvSTATE (prev);	1279	ta->prev = SvSTATE (prev_sv);
1024	ta->next = SvSTATE (next);	1280	TRANSFER_CHECK (*ta);
1025
1026	assert (ta->next->flags & CF_READY);	1281	assert (ta->next->flags & CF_READY);
1027	ta->next->flags &= ~CF_READY;	1282	ta->next->flags &= ~CF_READY;
1028	}	1283	SvRV_set (coro_current, next_sv);
1029		1284
		1285	LOCK;
		1286	free_coro_mortal (aTHX);
		1287	coro_mortal = prev_sv;
		1288	UNLOCK;
		1289	}
		1290
1030	static void	1291	static void
1031	prepare_cede (struct transfer_args *ta)	1292	prepare_cede (pTHX_ struct transfer_args *ta)
1032	{	1293	{
1033	api_ready (coro_current);	1294	api_ready (coro_current);
1034
1035	prepare_schedule (ta);	1295	prepare_schedule (aTHX_ ta);
		1296	}
		1297
		1298	static int
		1299	prepare_cede_notself (pTHX_ struct transfer_args *ta)
		1300	{
		1301	if (coro_nready)
		1302	{
		1303	SV *prev = SvRV (coro_current);
		1304	prepare_schedule (aTHX_ ta);
		1305	api_ready (prev);
		1306	return 1;
		1307	}
		1308	else
		1309	return 0;
1036	}	1310	}
1037		1311
1038	static void	1312	static void
1039	api_schedule (void)	1313	api_schedule (void)
1040	{	1314	{
		1315	dTHX;
1041	struct transfer_args ta;	1316	struct transfer_args ta;
1042		1317
1043	prepare_schedule (&ta);	1318	prepare_schedule (aTHX_ &ta);
1044	TRANSFER (ta);	1319	TRANSFER (ta);
1045	}	1320	}
1046		1321
1047	static void	1322	static int
1048	api_cede (void)	1323	api_cede (void)
1049	{	1324	{
		1325	dTHX;
1050	struct transfer_args ta;	1326	struct transfer_args ta;
1051		1327
1052	prepare_cede (&ta);	1328	prepare_cede (aTHX_ &ta);
		1329
		1330	if (ta.prev != ta.next)
		1331	{
1053	TRANSFER (ta);	1332	TRANSFER (ta);
		1333	return 1;
		1334	}
		1335	else
		1336	return 0;
1054	}	1337	}
1055		1338
		1339	static int
		1340	api_cede_notself (void)
		1341	{
		1342	dTHX;
		1343	struct transfer_args ta;
		1344
		1345	if (prepare_cede_notself (aTHX_ &ta))
		1346	{
		1347	TRANSFER (ta);
		1348	return 1;
		1349	}
		1350	else
		1351	return 0;
		1352	}
		1353
		1354	static void
		1355	api_trace (SV *coro_sv, int flags)
		1356	{
		1357	dTHX;
		1358	struct coro *coro = SvSTATE (coro_sv);
		1359
		1360	if (flags & CC_TRACE)
		1361	{
		1362	if (!coro->cctx)
		1363	coro->cctx = cctx_new ();
		1364	else if (!(coro->cctx->flags & CC_TRACE))
		1365	croak ("cannot enable tracing on coroutine with custom stack");
		1366
		1367	coro->cctx->flags \|= CC_NOREUSE \| (flags & (CC_TRACE \| CC_TRACE_ALL));
		1368	}
		1369	else if (coro->cctx && coro->cctx->flags & CC_TRACE)
		1370	{
		1371	coro->cctx->flags &= ~(CC_TRACE \| CC_TRACE_ALL);
		1372
		1373	if (coro->flags & CF_RUNNING)
		1374	PL_runops = RUNOPS_DEFAULT;
		1375	else
		1376	coro->runops = RUNOPS_DEFAULT;
		1377	}
		1378	}
		1379
1056	MODULE = Coro::State PACKAGE = Coro::State	1380	MODULE = Coro::State PACKAGE = Coro::State PREFIX = api_
1057		1381
1058	PROTOTYPES: DISABLE	1382	PROTOTYPES: DISABLE
1059		1383
1060	BOOT:	1384	BOOT:
1061	{	1385	{
1062	#ifdef USE_ITHREADS	1386	#ifdef USE_ITHREADS
1063	MUTEX_INIT (&coro_mutex);	1387	MUTEX_INIT (&coro_mutex);
1064	#endif	1388	#endif
1065	BOOT_PAGESIZE;	1389	BOOT_PAGESIZE;
1066		1390
		1391	irsgv = gv_fetchpv ("/", 1, SVt_PV);
		1392
1067	coro_state_stash = gv_stashpv ("Coro::State", TRUE);	1393	coro_state_stash = gv_stashpv ("Coro::State", TRUE);
1068		1394
		1395	newCONSTSUB (coro_state_stash, "CC_TRACE" , newSViv (CC_TRACE));
		1396	newCONSTSUB (coro_state_stash, "CC_TRACE_SUB" , newSViv (CC_TRACE_SUB));
1069	newCONSTSUB (coro_state_stash, "SAVE_DEFAV", newSViv (CORO_SAVE_DEFAV));	1397	newCONSTSUB (coro_state_stash, "CC_TRACE_LINE", newSViv (CC_TRACE_LINE));
1070	newCONSTSUB (coro_state_stash, "SAVE_DEFSV", newSViv (CORO_SAVE_DEFSV));
1071	newCONSTSUB (coro_state_stash, "SAVE_ERRSV", newSViv (CORO_SAVE_ERRSV));
1072	newCONSTSUB (coro_state_stash, "SAVE_IRSSV", newSViv (CORO_SAVE_IRSSV));
1073	newCONSTSUB (coro_state_stash, "SAVE_ALL", newSViv (CORO_SAVE_ALL));	1398	newCONSTSUB (coro_state_stash, "CC_TRACE_ALL" , newSViv (CC_TRACE_ALL));
1074		1399
1075	main_mainstack = PL_mainstack;	1400	main_mainstack = PL_mainstack;
		1401	main_top_env = PL_top_env;
		1402
		1403	while (main_top_env->je_prev)
		1404	main_top_env = main_top_env->je_prev;
1076		1405
1077	coroapi.ver = CORO_API_VERSION;	1406	coroapi.ver = CORO_API_VERSION;
1078	coroapi.transfer = api_transfer;	1407	coroapi.transfer = api_transfer;
1079		1408
1080	assert (("PRIO_NORMAL must be 0", !PRIO_NORMAL));	1409	assert (("PRIO_NORMAL must be 0", !PRIO_NORMAL));
…		…
1087	struct coro *coro;	1416	struct coro *coro;
1088	HV *hv;	1417	HV *hv;
1089	int i;	1418	int i;
1090		1419
1091	Newz (0, coro, 1, struct coro);	1420	Newz (0, coro, 1, struct coro);
1092	coro->args = newAV ();	1421	coro->args = newAV ();
1093	coro->save = CORO_SAVE_ALL;
1094	coro->flags = CF_NEW;	1422	coro->flags = CF_NEW;
1095		1423
		1424	if (coro_first) coro_first->prev = coro;
		1425	coro->next = coro_first;
		1426	coro_first = coro;
		1427
1096	hv = newHV ();	1428	coro->hv = hv = newHV ();
1097	sv_magicext ((SV )hv, 0, PERL_MAGIC_ext, &coro_state_vtbl, (char )coro, 0)->mg_flags \|= MGf_DUP;	1429	sv_magicext ((SV )hv, 0, PERL_MAGIC_ext, &coro_state_vtbl, (char )coro, 0)->mg_flags \|= MGf_DUP;
1098	RETVAL = sv_bless (newRV_noinc ((SV *)hv), gv_stashpv (klass, 1));	1430	RETVAL = sv_bless (newRV_noinc ((SV *)hv), gv_stashpv (klass, 1));
1099		1431
1100	for (i = 1; i < items; i++)	1432	for (i = 1; i < items; i++)
1101	av_push (coro->args, newSVsv (ST (i)));	1433	av_push (coro->args, newSVsv (ST (i)));
1102	}	1434	}
1103	OUTPUT:	1435	OUTPUT:
1104	RETVAL	1436	RETVAL
1105		1437
1106	int	1438	# these not obviously related functions are all rolled into the same xs
1107	save (SV *coro, int new_save = -1)	1439	# function to increase chances that they all will call transfer with the same
1108	CODE:	1440	# stack offset
1109	RETVAL = api_save (coro, new_save);
1110	OUTPUT:
1111	RETVAL
1112
1113	void	1441	void
1114	_set_stacklevel (...)	1442	_set_stacklevel (...)
1115	ALIAS:	1443	ALIAS:
1116	Coro::State::transfer = 1	1444	Coro::State::transfer = 1
1117	Coro::schedule = 2	1445	Coro::schedule = 2
1118	Coro::cede = 3	1446	Coro::cede = 3
		1447	Coro::cede_notself = 4
1119	CODE:	1448	CODE:
1120	{	1449	{
1121	struct transfer_args ta;	1450	struct transfer_args ta;
1122		1451
1123	switch (ix)	1452	switch (ix)
…		…
1129		1458
1130	case 1:	1459	case 1:
1131	if (items != 2)	1460	if (items != 2)
1132	croak ("Coro::State::transfer (prev,next) expects two arguments, not %d", items);	1461	croak ("Coro::State::transfer (prev,next) expects two arguments, not %d", items);
1133		1462
1134	prepare_transfer (&ta, ST (0), ST (1));	1463	prepare_transfer (aTHX_ &ta, ST (0), ST (1));
1135	break;	1464	break;
1136		1465
1137	case 2:	1466	case 2:
1138	prepare_schedule (&ta);	1467	prepare_schedule (aTHX_ &ta);
1139	break;	1468	break;
1140		1469
1141	case 3:	1470	case 3:
1142	prepare_cede (&ta);	1471	prepare_cede (aTHX_ &ta);
		1472	break;
		1473
		1474	case 4:
		1475	if (!prepare_cede_notself (aTHX_ &ta))
		1476	XSRETURN_EMPTY;
		1477
1143	break;	1478	break;
1144	}	1479	}
1145		1480
		1481	BARRIER;
1146	TRANSFER (ta);	1482	TRANSFER (ta);
1147	}
1148		1483
1149	void	1484	if (GIMME_V != G_VOID && ta.next != ta.prev)
1150	_clone_state_from (SV dst, SV src)	1485	XSRETURN_YES;
		1486	}
		1487
		1488	bool
		1489	_destroy (SV *coro_sv)
1151	CODE:	1490	CODE:
1152	{	1491	RETVAL = coro_state_destroy (aTHX_ SvSTATE (coro_sv));
1153	struct coro *coro_src = SvSTATE (src);	1492	OUTPUT:
1154		1493	RETVAL
1155	sv_unmagic (SvRV (dst), PERL_MAGIC_ext);
1156
1157	++coro_src->refcnt;
1158	sv_magicext (SvRV (dst), 0, PERL_MAGIC_ext, &coro_state_vtbl, (char *)coro_src, 0)->mg_flags \|= MGf_DUP;
1159	}
1160		1494
1161	void	1495	void
1162	_exit (code)	1496	_exit (code)
1163	int code	1497	int code
1164	PROTOTYPE: $	1498	PROTOTYPE: $
1165	CODE:	1499	CODE:
1166	_exit (code);	1500	_exit (code);
1167		1501
1168	int	1502	int
		1503	cctx_stacksize (int new_stacksize = 0)
		1504	CODE:
		1505	RETVAL = coro_stacksize;
		1506	if (new_stacksize)
		1507	coro_stacksize = new_stacksize;
		1508	OUTPUT:
		1509	RETVAL
		1510
		1511	int
1169	cctx_count ()	1512	cctx_count ()
1170	CODE:	1513	CODE:
1171	RETVAL = cctx_count;	1514	RETVAL = cctx_count;
1172	OUTPUT:	1515	OUTPUT:
1173	RETVAL	1516	RETVAL
…		…
1177	CODE:	1520	CODE:
1178	RETVAL = cctx_idle;	1521	RETVAL = cctx_idle;
1179	OUTPUT:	1522	OUTPUT:
1180	RETVAL	1523	RETVAL
1181		1524
		1525	void
		1526	list ()
		1527	PPCODE:
		1528	{
		1529	struct coro *coro;
		1530	for (coro = coro_first; coro; coro = coro->next)
		1531	if (coro->hv)
		1532	XPUSHs (sv_2mortal (newRV_inc ((SV *)coro->hv)));
		1533	}
		1534
		1535	void
		1536	call (Coro::State coro, SV *coderef)
		1537	ALIAS:
		1538	eval = 1
		1539	CODE:
		1540	{
		1541	if (coro->mainstack)
		1542	{
		1543	struct coro temp;
		1544	Zero (&temp, 1, struct coro);
		1545
		1546	if (!(coro->flags & CF_RUNNING))
		1547	{
		1548	save_perl (aTHX_ &temp);
		1549	load_perl (aTHX_ coro);
		1550	}
		1551
		1552	{
		1553	dSP;
		1554	ENTER;
		1555	SAVETMPS;
		1556	PUSHMARK (SP);
		1557	PUTBACK;
		1558	if (ix)
		1559	eval_sv (coderef, 0);
		1560	else
		1561	call_sv (coderef, G_KEEPERR \| G_EVAL \| G_VOID \| G_DISCARD);
		1562	SPAGAIN;
		1563	FREETMPS;
		1564	LEAVE;
		1565	PUTBACK;
		1566	}
		1567
		1568	if (!(coro->flags & CF_RUNNING))
		1569	{
		1570	save_perl (aTHX_ coro);
		1571	load_perl (aTHX_ &temp);
		1572	}
		1573	}
		1574	}
		1575
		1576	SV *
		1577	is_ready (Coro::State coro)
		1578	PROTOTYPE: $
		1579	ALIAS:
		1580	is_ready = CF_READY
		1581	is_running = CF_RUNNING
		1582	is_new = CF_NEW
		1583	is_destroyed = CF_DESTROYED
		1584	CODE:
		1585	RETVAL = boolSV (coro->flags & ix);
		1586	OUTPUT:
		1587	RETVAL
		1588
		1589	void
		1590	api_trace (SV *coro, int flags = CC_TRACE \| CC_TRACE_SUB)
		1591
		1592	SV *
		1593	has_stack (Coro::State coro)
		1594	PROTOTYPE: $
		1595	CODE:
		1596	RETVAL = boolSV (!!coro->cctx);
		1597	OUTPUT:
		1598	RETVAL
		1599
		1600	int
		1601	is_traced (Coro::State coro)
		1602	PROTOTYPE: $
		1603	CODE:
		1604	RETVAL = (coro->cctx ? coro->cctx->flags : 0) & CC_TRACE_ALL;
		1605	OUTPUT:
		1606	RETVAL
		1607
		1608	IV
		1609	rss (Coro::State coro)
		1610	PROTOTYPE: $
		1611	ALIAS:
		1612	usecount = 1
		1613	CODE:
		1614	switch (ix)
		1615	{
		1616	case 0: RETVAL = coro_rss (aTHX_ coro); break;
		1617	case 1: RETVAL = coro->usecount; break;
		1618	}
		1619	OUTPUT:
		1620	RETVAL
		1621
		1622
1182	MODULE = Coro::State PACKAGE = Coro	1623	MODULE = Coro::State PACKAGE = Coro
1183		1624
1184	BOOT:	1625	BOOT:
1185	{	1626	{
1186	int i;	1627	int i;
		1628
		1629	sv_pool_rss = get_sv ("Coro::POOL_RSS" , TRUE);
		1630	sv_pool_size = get_sv ("Coro::POOL_SIZE" , TRUE);
		1631	av_async_pool = get_av ("Coro::async_pool", TRUE);
		1632
		1633	coro_current = get_sv ("Coro::current", FALSE);
		1634	SvREADONLY_on (coro_current);
1187		1635
1188	coro_stash = gv_stashpv ("Coro", TRUE);	1636	coro_stash = gv_stashpv ("Coro", TRUE);
1189		1637
1190	newCONSTSUB (coro_stash, "PRIO_MAX", newSViv (PRIO_MAX));	1638	newCONSTSUB (coro_stash, "PRIO_MAX", newSViv (PRIO_MAX));
1191	newCONSTSUB (coro_stash, "PRIO_HIGH", newSViv (PRIO_HIGH));	1639	newCONSTSUB (coro_stash, "PRIO_HIGH", newSViv (PRIO_HIGH));
1192	newCONSTSUB (coro_stash, "PRIO_NORMAL", newSViv (PRIO_NORMAL));	1640	newCONSTSUB (coro_stash, "PRIO_NORMAL", newSViv (PRIO_NORMAL));
1193	newCONSTSUB (coro_stash, "PRIO_LOW", newSViv (PRIO_LOW));	1641	newCONSTSUB (coro_stash, "PRIO_LOW", newSViv (PRIO_LOW));
1194	newCONSTSUB (coro_stash, "PRIO_IDLE", newSViv (PRIO_IDLE));	1642	newCONSTSUB (coro_stash, "PRIO_IDLE", newSViv (PRIO_IDLE));
1195	newCONSTSUB (coro_stash, "PRIO_MIN", newSViv (PRIO_MIN));	1643	newCONSTSUB (coro_stash, "PRIO_MIN", newSViv (PRIO_MIN));
1196		1644
1197	coro_current = get_sv ("Coro::current", FALSE);
1198	SvREADONLY_on (coro_current);
1199
1200	for (i = PRIO_MAX - PRIO_MIN + 1; i--; )	1645	for (i = PRIO_MAX - PRIO_MIN + 1; i--; )
1201	coro_ready[i] = newAV ();	1646	coro_ready[i] = newAV ();
1202		1647
1203	{	1648	{
1204	SV *sv = perl_get_sv("Coro::API", 1);	1649	SV *sv = perl_get_sv("Coro::API", 1);
1205		1650
1206	coroapi.schedule = api_schedule;	1651	coroapi.schedule = api_schedule;
1207	coroapi.save = api_save;
1208	coroapi.cede = api_cede;	1652	coroapi.cede = api_cede;
		1653	coroapi.cede_notself = api_cede_notself;
1209	coroapi.ready = api_ready;	1654	coroapi.ready = api_ready;
1210	coroapi.is_ready = api_is_ready;	1655	coroapi.is_ready = api_is_ready;
1211	coroapi.nready = &coro_nready;	1656	coroapi.nready = &coro_nready;
1212	coroapi.current = coro_current;	1657	coroapi.current = coro_current;
1213		1658
1214	GCoroAPI = &coroapi;	1659	GCoroAPI = &coroapi;
1215	sv_setiv (sv, (IV)&coroapi);	1660	sv_setiv (sv, (IV)&coroapi);
1216	SvREADONLY_on (sv);	1661	SvREADONLY_on (sv);
1217	}	1662	}
…		…
1233	RETVAL = coro->prio;	1678	RETVAL = coro->prio;
1234		1679
1235	if (items > 1)	1680	if (items > 1)
1236	{	1681	{
1237	if (ix)	1682	if (ix)
1238	newprio += coro->prio;	1683	newprio = coro->prio - newprio;
1239		1684
1240	if (newprio < PRIO_MIN) newprio = PRIO_MIN;	1685	if (newprio < PRIO_MIN) newprio = PRIO_MIN;
1241	if (newprio > PRIO_MAX) newprio = PRIO_MAX;	1686	if (newprio > PRIO_MAX) newprio = PRIO_MAX;
1242		1687
1243	coro->prio = newprio;	1688	coro->prio = newprio;
1244	}	1689	}
1245	}	1690	}
		1691	OUTPUT:
		1692	RETVAL
1246		1693
1247	SV *	1694	SV *
1248	ready (SV *self)	1695	ready (SV *self)
1249	PROTOTYPE: $	1696	PROTOTYPE: $
1250	CODE:	1697	CODE:
1251	RETVAL = boolSV (api_ready (self));	1698	RETVAL = boolSV (api_ready (self));
1252	OUTPUT:	1699	OUTPUT:
1253	RETVAL	1700	RETVAL
1254		1701
1255	SV *
1256	is_ready (SV *self)
1257	PROTOTYPE: $
1258	CODE:
1259	RETVAL = boolSV (api_is_ready (self));
1260	OUTPUT:
1261	RETVAL
1262
1263	int	1702	int
1264	nready (...)	1703	nready (...)
1265	PROTOTYPE:	1704	PROTOTYPE:
1266	CODE:	1705	CODE:
1267	RETVAL = coro_nready;	1706	RETVAL = coro_nready;
1268	OUTPUT:	1707	OUTPUT:
1269	RETVAL	1708	RETVAL
1270		1709
		1710	# for async_pool speedup
		1711	void
		1712	_pool_1 (SV *cb)
		1713	CODE:
		1714	{
		1715	struct coro *coro = SvSTATE (coro_current);
		1716	HV hv = (HV )SvRV (coro_current);
		1717	AV *defav = GvAV (PL_defgv);
		1718	SV *invoke = hv_delete (hv, "_invoke", sizeof ("_invoke") - 1, 0);
		1719	AV *invoke_av;
		1720	int i, len;
		1721
		1722	if (!invoke)
		1723	croak ("\3terminate\2\n");
		1724
		1725	SvREFCNT_dec (coro->saved_deffh);
		1726	coro->saved_deffh = SvREFCNT_inc ((SV *)PL_defoutgv);
		1727
		1728	hv_store (hv, "desc", sizeof ("desc") - 1,
		1729	newSVpvn ("[async_pool]", sizeof ("[async_pool]") - 1), 0);
		1730
		1731	invoke_av = (AV *)SvRV (invoke);
		1732	len = av_len (invoke_av);
		1733
		1734	sv_setsv (cb, AvARRAY (invoke_av)[0]);
		1735
		1736	if (len > 0)
		1737	{
		1738	av_fill (defav, len - 1);
		1739	for (i = 0; i < len; ++i)
		1740	av_store (defav, i, SvREFCNT_inc (AvARRAY (invoke_av)[i + 1]));
		1741	}
		1742
		1743	SvREFCNT_dec (invoke);
		1744	}
		1745
		1746	void
		1747	_pool_2 (SV *cb)
		1748	CODE:
		1749	{
		1750	struct coro *coro = SvSTATE (coro_current);
		1751
		1752	sv_setsv (cb, &PL_sv_undef);
		1753
		1754	SvREFCNT_dec ((SV )PL_defoutgv); PL_defoutgv = (GV )coro->saved_deffh;
		1755	coro->saved_deffh = 0;
		1756
		1757	if (coro_rss (aTHX_ coro) > SvIV (sv_pool_rss)
		1758	\|\| av_len (av_async_pool) + 1 >= SvIV (sv_pool_size))
		1759	croak ("\3terminate\2\n");
		1760
		1761	av_clear (GvAV (PL_defgv));
		1762	hv_store ((HV *)SvRV (coro_current), "desc", sizeof ("desc") - 1,
		1763	newSVpvn ("[async_pool idle]", sizeof ("[async_pool idle]") - 1), 0);
		1764
		1765	coro->prio = 0;
		1766
		1767	if (coro->cctx && (coro->cctx->flags & CC_TRACE))
		1768	api_trace (coro_current, 0);
		1769
		1770	av_push (av_async_pool, newSVsv (coro_current));
		1771	}
		1772
		1773
1271	MODULE = Coro::State PACKAGE = Coro::AIO	1774	MODULE = Coro::State PACKAGE = Coro::AIO
1272		1775
1273	SV *	1776	SV *
1274	_get_state ()	1777	_get_state ()
1275	CODE:	1778	CODE:

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Comparing Coro/Coro/State.xs (file contents): Revision 1.127 by root, Tue Dec 12 13:56:45 2006 UTC vs. Revision 1.186 by root, Fri Oct 5 20:10:42 2007 UTC

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Comparing Coro/Coro/State.xs (file contents):
Revision 1.127 by root, Tue Dec 12 13:56:45 2006 UTC vs.
Revision 1.186 by root, Fri Oct 5 20:10:42 2007 UTC