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

…		…
1	#include "libcoro/coro.c"	1	#include "libcoro/coro.c"
		2
		3	#define PERL_NO_GET_CONTEXT
2		4
3	#include "EXTERN.h"	5	#include "EXTERN.h"
4	#include "perl.h"	6	#include "perl.h"
5	#include "XSUB.h"	7	#include "XSUB.h"
6		8
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	IO 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 switches to this coro */
		207
179	/* coro process data */	208	/* coro process data */
180	int prio;	209	int prio;
		210
		211	/* linked list */
		212	struct coro next, prev;
		213	HV hv; / the perl hash associated with this coro, if any */
181	};	214	};
182		215
183	typedef struct coro *Coro__State;	216	typedef struct coro *Coro__State;
184	typedef struct coro *Coro__State_or_hashref;	217	typedef struct coro *Coro__State_or_hashref;
185		218
		219	/ Coro ******************************************************************/
		220
		221	#define PRIO_MAX 3
		222	#define PRIO_HIGH 1
		223	#define PRIO_NORMAL 0
		224	#define PRIO_LOW -1
		225	#define PRIO_IDLE -3
		226	#define PRIO_MIN -4
		227
		228	/* for Coro.pm */
		229	static SV *coro_current;
		230	static AV *coro_ready [PRIO_MAX-PRIO_MIN+1];
		231	static int coro_nready;
		232	static struct coro *coro_first;
		233
		234	/ lowlevel stuff ********************************************************/
		235
186	static AV *	236	static AV *
187	coro_clone_padlist (CV *cv)	237	coro_clone_padlist (pTHX_ CV *cv)
188	{	238	{
189	AV *padlist = CvPADLIST (cv);	239	AV *padlist = CvPADLIST (cv);
190	AV newpadlist, newpad;	240	AV newpadlist, newpad;
191		241
192	newpadlist = newAV ();	242	newpadlist = newAV ();
…		…
204		254
205	return newpadlist;	255	return newpadlist;
206	}	256	}
207		257
208	static void	258	static void
209	free_padlist (AV *padlist)	259	free_padlist (pTHX_ AV *padlist)
210	{	260	{
211	/* may be during global destruction */	261	/* may be during global destruction */
212	if (SvREFCNT (padlist))	262	if (SvREFCNT (padlist))
213	{	263	{
214	I32 i = AvFILLp (padlist);	264	I32 i = AvFILLp (padlist);
…		…
235	AV *padlist;	285	AV *padlist;
236	AV av = (AV )mg->mg_obj;	286	AV av = (AV )mg->mg_obj;
237		287
238	/* casting is fun. */	288	/* casting is fun. */
239	while (&PL_sv_undef != (SV )(padlist = (AV )av_pop (av)))	289	while (&PL_sv_undef != (SV )(padlist = (AV )av_pop (av)))
240	free_padlist (padlist);	290	free_padlist (aTHX_ padlist);
241		291
242	SvREFCNT_dec (av);	292	SvREFCNT_dec (av);
243		293
244	return 0;	294	return 0;
245	}	295	}
…		…
253	? SvMAGIC (cv)->mg_type == PERL_MAGIC_coro \	303	? SvMAGIC (cv)->mg_type == PERL_MAGIC_coro \
254	? SvMAGIC (cv) \	304	? SvMAGIC (cv) \
255	: mg_find ((SV *)cv, PERL_MAGIC_coro) \	305	: mg_find ((SV *)cv, PERL_MAGIC_coro) \
256	: 0	306	: 0
257		307
		308	static struct coro *
		309	SvSTATE_ (pTHX_ SV *coro)
		310	{
		311	HV *stash;
		312	MAGIC *mg;
		313
		314	if (SvROK (coro))
		315	coro = SvRV (coro);
		316
		317	if (SvTYPE (coro) != SVt_PVHV)
		318	croak ("Coro::State object required");
		319
		320	stash = SvSTASH (coro);
		321	if (stash != coro_stash && stash != coro_state_stash)
		322	{
		323	/* very slow, but rare, check */
		324	if (!sv_derived_from (sv_2mortal (newRV_inc (coro)), "Coro::State"))
		325	croak ("Coro::State object required");
		326	}
		327
		328	mg = CORO_MAGIC (coro);
		329	return (struct coro *)mg->mg_ptr;
		330	}
		331
		332	#define SvSTATE(sv) SvSTATE_ (aTHX_ (sv))
		333
258	/* the next two functions merely cache the padlists */	334	/* the next two functions merely cache the padlists */
259	static void	335	static void
260	get_padlist (CV *cv)	336	get_padlist (pTHX_ CV *cv)
261	{	337	{
262	MAGIC *mg = CORO_MAGIC (cv);	338	MAGIC *mg = CORO_MAGIC (cv);
263	AV *av;	339	AV *av;
264		340
265	if (mg && AvFILLp ((av = (AV *)mg->mg_obj)) >= 0)	341	if (mg && AvFILLp ((av = (AV *)mg->mg_obj)) >= 0)
266	CvPADLIST (cv) = (AV *)AvARRAY (av)[AvFILLp (av)--];	342	CvPADLIST (cv) = (AV *)AvARRAY (av)[AvFILLp (av)--];
267	else	343	else
268	{	344	{
269	#if PREFER_PERL_FUNCTIONS	345	#if CORO_PREFER_PERL_FUNCTIONS
270	/* this is probably cleaner, but also slower? */	346	/* this is probably cleaner, but also slower? */
271	CV *cp = Perl_cv_clone (cv);	347	CV *cp = Perl_cv_clone (cv);
272	CvPADLIST (cv) = CvPADLIST (cp);	348	CvPADLIST (cv) = CvPADLIST (cp);
273	CvPADLIST (cp) = 0;	349	CvPADLIST (cp) = 0;
274	SvREFCNT_dec (cp);	350	SvREFCNT_dec (cp);
275	#else	351	#else
276	CvPADLIST (cv) = coro_clone_padlist (cv);	352	CvPADLIST (cv) = coro_clone_padlist (aTHX_ cv);
277	#endif	353	#endif
278	}	354	}
279	}	355	}
280		356
281	static void	357	static void
282	put_padlist (CV *cv)	358	put_padlist (pTHX_ CV *cv)
283	{	359	{
284	MAGIC *mg = CORO_MAGIC (cv);	360	MAGIC *mg = CORO_MAGIC (cv);
285	AV *av;	361	AV *av;
286		362
287	if (!mg)	363	if (!mg)
…		…
298	av_extend (av, AvMAX (av) + 1);	374	av_extend (av, AvMAX (av) + 1);
299		375
300	AvARRAY (av)[++AvFILLp (av)] = (SV *)CvPADLIST (cv);	376	AvARRAY (av)[++AvFILLp (av)] = (SV *)CvPADLIST (cv);
301	}	377	}
302		378
303	#define SB do {	379	/ load & save, init *****************************************************/
304	#define SE } while (0)
305		380
306	#define REPLACE_SV(sv,val) SB SvREFCNT_dec (sv); (sv) = (val); (val) = 0; SE
307
308	static void	381	static void
309	load_perl (Coro__State c)	382	load_perl (pTHX_ Coro__State c)
310	{	383	{
311	#define VAR(name,type) PL_ ## name = c->name;	384	#define VAR(name,type) PL_ ## name = c->name;
312	# include "state.h"	385	# include "state.h"
313	#undef VAR	386	#undef VAR
314		387
315	if (c->defav) REPLACE_SV (GvAV (PL_defgv), c->defav);	388	GvSV (PL_defgv) = c->defsv;
316	if (c->defsv) REPLACE_SV (DEFSV , c->defsv);	389	GvAV (PL_defgv) = c->defav;
317	if (c->errsv) REPLACE_SV (ERRSV , c->errsv);	390	GvSV (PL_errgv) = c->errsv;
318	if (c->irssv)	391	GvIOp(PL_defoutgv) = c->deffh;
319	{	392	PL_rs = c->irssv;
320	if (c->irssv == PL_rs \|\| sv_eq (PL_rs, c->irssv))	393	GvSV (irsgv) = c->irssv_sv;
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		394
330	{	395	{
331	dSP;	396	dSP;
332	CV *cv;	397	CV *cv;
333		398
334	/* now do the ugly restore mess */	399	/* now do the ugly restore mess */
335	while ((cv = (CV *)POPs))	400	while ((cv = (CV *)POPs))
336	{	401	{
337	put_padlist (cv); /* mark this padlist as available */	402	put_padlist (aTHX_ cv); /* mark this padlist as available */
338	CvDEPTH (cv) = PTR2IV (POPs);	403	CvDEPTH (cv) = PTR2IV (POPs);
339	CvPADLIST (cv) = (AV *)POPs;	404	CvPADLIST (cv) = (AV *)POPs;
340	}	405	}
341		406
342	PUTBACK;	407	PUTBACK;
343	}	408	}
344	}	409	}
345		410
346	static void	411	static void
347	save_perl (Coro__State c)	412	save_perl (pTHX_ Coro__State c)
348	{	413	{
349	{	414	{
350	dSP;	415	dSP;
351	I32 cxix = cxstack_ix;	416	I32 cxix = cxstack_ix;
352	PERL_CONTEXT *ccstk = cxstack;	417	PERL_CONTEXT *ccstk = cxstack;
…		…
355	/*	420	/*
356	* the worst thing you can imagine happens first - we have to save	421	* the worst thing you can imagine happens first - we have to save
357	* (and reinitialize) all cv's in the whole callchain :(	422	* (and reinitialize) all cv's in the whole callchain :(
358	*/	423	*/
359		424
360	EXTEND (SP, 3 + 1);
361	PUSHs (Nullsv);	425	XPUSHs (Nullsv);
362	/* this loop was inspired by pp_caller */	426	/* this loop was inspired by pp_caller */
363	for (;;)	427	for (;;)
364	{	428	{
365	while (cxix >= 0)	429	while (cxix >= 0)
366	{	430	{
367	PERL_CONTEXT *cx = &ccstk[cxix--];	431	PERL_CONTEXT *cx = &ccstk[cxix--];
368		432
369	if (CxTYPE (cx) == CXt_SUB)	433	if (CxTYPE (cx) == CXt_SUB \|\| CxTYPE (cx) == CXt_FORMAT)
370	{	434	{
371	CV *cv = cx->blk_sub.cv;	435	CV *cv = cx->blk_sub.cv;
372		436
373	if (CvDEPTH (cv))	437	if (CvDEPTH (cv))
374	{	438	{
…		…
376	PUSHs ((SV *)CvPADLIST (cv));	440	PUSHs ((SV *)CvPADLIST (cv));
377	PUSHs (INT2PTR (SV *, CvDEPTH (cv)));	441	PUSHs (INT2PTR (SV *, CvDEPTH (cv)));
378	PUSHs ((SV *)cv);	442	PUSHs ((SV *)cv);
379		443
380	CvDEPTH (cv) = 0;	444	CvDEPTH (cv) = 0;
381	get_padlist (cv);	445	get_padlist (aTHX_ cv);
382	}	446	}
383	}	447	}
384	}	448	}
385		449
386	if (top_si->si_type == PERLSI_MAIN)	450	if (top_si->si_type == PERLSI_MAIN)
387	break;	451	break;
388		452
389	top_si = top_si->si_prev;	453	top_si = top_si->si_prev;
390	ccstk = top_si->si_cxstack;	454	ccstk = top_si->si_cxstack;
391	cxix = top_si->si_cxix;	455	cxix = top_si->si_cxix;
392	}	456	}
393		457
394	PUTBACK;	458	PUTBACK;
395	}	459	}
396		460
397	c->defav = c->save & CORO_SAVE_DEFAV ? (AV *)SvREFCNT_inc (GvAV (PL_defgv)) : 0;	461	c->defav = GvAV (PL_defgv);
398	c->defsv = c->save & CORO_SAVE_DEFSV ? SvREFCNT_inc (DEFSV) : 0;	462	c->defsv = DEFSV;
399	c->errsv = c->save & CORO_SAVE_ERRSV ? SvREFCNT_inc (ERRSV) : 0;	463	c->errsv = ERRSV;
400	c->irssv = c->save & CORO_SAVE_IRSSV ? SvREFCNT_inc (PL_rs) : 0;	464	c->deffh = GvIOp (PL_defoutgv);
		465	c->irssv = PL_rs;
		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 (struct xpvav) + (1 + AvFILL (coro->curstackinfo->si_stack)) * sizeof (SV *);
		569	rss += (coro->curstackinfo->si_cxmax + 1) * sizeof (PERL_CONTEXT);
		570	rss += sizeof (struct xpvav) + (1 + AvFILL (coro->curstack)) * sizeof (SV *);
		571	rss += coro->tmps_max * sizeof (SV *);
		572	rss += (coro->markstack_max - coro->markstack_ptr) * sizeof (I32);
		573	rss += coro->scopestack_max * sizeof (I32);
		574	rss += coro->savestack_max * sizeof (ANY);
		575
		576	#if !PERL_VERSION_ATLEAST (5,9,0)
		577	rss += coro->retstack_max * sizeof (OP *);
		578	#endif
		579	}
		580
		581	return rss;
		582	}
		583
		584	/ coroutine stack handling **********************************************/
		585
		586	static void
		587	coro_setup (pTHX_ struct coro *coro)
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), irsgv, PERL_MAGIC_sv, "/", 1);
		607	PL_rs = newSVsv (GvSV (irsgv));
		608
		609	{
		610	IO *io = newIO ();
		611	GvIOp(PL_defoutgv) = io;
		612	IoTYPE (io) = IoTYPE_WRONLY;
		613	IoOFP (io) = IoIFP (io) = PerlIO_stdout ();
		614	IoFLAGS (io) \|= IOf_FLUSH;
		615	}
515		616
516	{	617	{
517	dSP;	618	dSP;
518	LOGOP myop;	619	LOGOP myop;
519		620
520	SvREFCNT_dec (GvAV (PL_defgv));
521	GvAV (PL_defgv) = coro->args; coro->args = 0;
522
523	Zero (&myop, 1, LOGOP);	621	Zero (&myop, 1, LOGOP);
524	myop.op_next = Nullop;	622	myop.op_next = Nullop;
525	myop.op_flags = OPf_WANT_VOID;	623	myop.op_flags = OPf_WANT_VOID;
526		624
527	PUSHMARK (SP);	625	PUSHMARK (SP);
528	XPUSHs ((SV *)get_cv ("Coro::State::_coro_init", FALSE));	626	XPUSHs (av_shift (GvAV (PL_defgv)));
529	PUTBACK;	627	PUTBACK;
530	PL_op = (OP *)&myop;	628	PL_op = (OP *)&myop;
531	PL_op = PL_ppaddr[OP_ENTERSUB](aTHX);	629	PL_op = PL_ppaddr[OP_ENTERSUB](aTHX);
532	SPAGAIN;	630	SPAGAIN;
533	}	631	}
534		632
535	ENTER; /* necessary e.g. for dounwind */	633	ENTER; /* necessary e.g. for dounwind */
536	}	634	}
537		635
538	static void	636	static void
		637	coro_destroy (pTHX_ struct coro *coro)
		638	{
		639	if (!IN_DESTRUCT)
		640	{
		641	/* restore all saved variables and stuff */
		642	LEAVE_SCOPE (0);
		643	assert (PL_tmps_floor == -1);
		644
		645	/* free all temporaries */
		646	FREETMPS;
		647	assert (PL_tmps_ix == -1);
		648
		649	/* unwind all extra stacks */
		650	POPSTACK_TO (PL_mainstack);
		651
		652	/* unwind main stack */
		653	dounwind (-1);
		654	}
		655
		656	SvREFCNT_dec (GvSV (PL_defgv));
		657	SvREFCNT_dec (GvAV (PL_defgv));
		658	SvREFCNT_dec (GvSV (PL_errgv));
		659	SvREFCNT_dec (GvIOp(PL_defoutgv));
		660	SvREFCNT_dec (PL_rs);
		661	SvREFCNT_dec (GvSV (irsgv));
		662
		663	coro_destroy_stacks (aTHX);
		664	}
		665
		666	static void
539	free_coro_mortal ()	667	free_coro_mortal (pTHX)
540	{	668	{
541	if (coro_mortal)	669	if (coro_mortal)
542	{	670	{
543	SvREFCNT_dec (coro_mortal);	671	SvREFCNT_dec (coro_mortal);
544	coro_mortal = 0;	672	coro_mortal = 0;
545	}	673	}
546	}	674	}
547		675
		676	static int
		677	runops_trace (pTHX)
		678	{
		679	COP *oldcop = 0;
		680	int oldcxix = -2;
		681	struct coro coro = SvSTATE (coro_current); / trace cctx is tied to specific coro */
		682	coro_cctx *cctx = coro->cctx;
		683
		684	while ((PL_op = CALL_FPTR (PL_op->op_ppaddr) (aTHX)))
		685	{
		686	PERL_ASYNC_CHECK ();
		687
		688	if (cctx->flags & CC_TRACE_ALL)
		689	{
		690	if (PL_op->op_type == OP_LEAVESUB && cctx->flags & CC_TRACE_SUB)
		691	{
		692	PERL_CONTEXT *cx = &cxstack[cxstack_ix];
		693	SV bot, top;
		694	AV av = newAV (); / return values */
		695	SV **cb;
		696	dSP;
		697
		698	GV *gv = CvGV (cx->blk_sub.cv);
		699	SV *fullname = sv_2mortal (newSV (0));
		700	if (isGV (gv))
		701	gv_efullname3 (fullname, gv, 0);
		702
		703	bot = PL_stack_base + cx->blk_oldsp + 1;
		704	top = cx->blk_gimme == G_ARRAY ? SP + 1
		705	: cx->blk_gimme == G_SCALAR ? bot + 1
		706	: bot;
		707
		708	while (bot < top)
		709	av_push (av, SvREFCNT_inc (*bot++));
		710
		711	PL_runops = RUNOPS_DEFAULT;
		712	ENTER;
		713	SAVETMPS;
		714	EXTEND (SP, 3);
		715	PUSHMARK (SP);
		716	PUSHs (&PL_sv_no);
		717	PUSHs (fullname);
		718	PUSHs (sv_2mortal (newRV_noinc ((SV *)av)));
		719	PUTBACK;
		720	cb = hv_fetch ((HV *)SvRV (coro_current), "_trace_sub_cb", sizeof ("_trace_sub_cb") - 1, 0);
		721	if (cb) call_sv (*cb, G_KEEPERR \| G_EVAL \| G_VOID \| G_DISCARD);
		722	SPAGAIN;
		723	FREETMPS;
		724	LEAVE;
		725	PL_runops = runops_trace;
		726	}
		727
		728	if (oldcop != PL_curcop)
		729	{
		730	oldcop = PL_curcop;
		731
		732	if (PL_curcop != &PL_compiling)
		733	{
		734	SV **cb;
		735
		736	if (oldcxix != cxstack_ix && cctx->flags & CC_TRACE_SUB)
		737	{
		738	PERL_CONTEXT *cx = &cxstack[cxstack_ix];
		739
		740	if (CxTYPE (cx) == CXt_SUB && oldcxix < cxstack_ix)
		741	{
		742	runops_proc_t old_runops = PL_runops;
		743	dSP;
		744	GV *gv = CvGV (cx->blk_sub.cv);
		745	SV *fullname = sv_2mortal (newSV (0));
		746
		747	if (isGV (gv))
		748	gv_efullname3 (fullname, gv, 0);
		749
		750	PL_runops = RUNOPS_DEFAULT;
		751	ENTER;
		752	SAVETMPS;
		753	EXTEND (SP, 3);
		754	PUSHMARK (SP);
		755	PUSHs (&PL_sv_yes);
		756	PUSHs (fullname);
		757	PUSHs (cx->blk_sub.hasargs ? sv_2mortal (newRV_inc ((SV *)cx->blk_sub.argarray)) : &PL_sv_undef);
		758	PUTBACK;
		759	cb = hv_fetch ((HV *)SvRV (coro_current), "_trace_sub_cb", sizeof ("_trace_sub_cb") - 1, 0);
		760	if (cb) call_sv (*cb, G_KEEPERR \| G_EVAL \| G_VOID \| G_DISCARD);
		761	SPAGAIN;
		762	FREETMPS;
		763	LEAVE;
		764	PL_runops = runops_trace;
		765	}
		766
		767	oldcxix = cxstack_ix;
		768	}
		769
		770	if (cctx->flags & CC_TRACE_LINE)
		771	{
		772	dSP;
		773
		774	PL_runops = RUNOPS_DEFAULT;
		775	ENTER;
		776	SAVETMPS;
		777	EXTEND (SP, 3);
		778	PL_runops = RUNOPS_DEFAULT;
		779	PUSHMARK (SP);
		780	PUSHs (sv_2mortal (newSVpv (OutCopFILE (oldcop), 0)));
		781	PUSHs (sv_2mortal (newSViv (CopLINE (oldcop))));
		782	PUTBACK;
		783	cb = hv_fetch ((HV *)SvRV (coro_current), "_trace_line_cb", sizeof ("_trace_line_cb") - 1, 0);
		784	if (cb) call_sv (*cb, G_KEEPERR \| G_EVAL \| G_VOID \| G_DISCARD);
		785	SPAGAIN;
		786	FREETMPS;
		787	LEAVE;
		788	PL_runops = runops_trace;
		789	}
		790	}
		791	}
		792	}
		793	}
		794
		795	TAINT_NOT;
		796	return 0;
		797	}
		798
548	/* inject a fake call to Coro::State::_cctx_init into the execution */	799	/* inject a fake call to Coro::State::_cctx_init into the execution */
		800	/* _cctx_init should be careful, as it could be called at almost any time */
		801	/* during execution of a perl program */
549	static void NOINLINE	802	static void NOINLINE
550	prepare_cctx (coro_cctx *cctx)	803	prepare_cctx (pTHX_ coro_cctx *cctx)
551	{	804	{
552	dSP;	805	dSP;
553	LOGOP myop;	806	LOGOP myop;
		807
		808	PL_top_env = &PL_start_env;
		809
		810	if (cctx->flags & CC_TRACE)
		811	PL_runops = runops_trace;
554		812
555	Zero (&myop, 1, LOGOP);	813	Zero (&myop, 1, LOGOP);
556	myop.op_next = PL_op;	814	myop.op_next = PL_op;
557	myop.op_flags = OPf_WANT_VOID \| OPf_STACKED;	815	myop.op_flags = OPf_WANT_VOID \| OPf_STACKED;
558		816
…		…
564	PL_op = (OP *)&myop;	822	PL_op = (OP *)&myop;
565	PL_op = PL_ppaddr[OP_ENTERSUB](aTHX);	823	PL_op = PL_ppaddr[OP_ENTERSUB](aTHX);
566	SPAGAIN;	824	SPAGAIN;
567	}	825	}
568		826
		827	/*
		828	* this is a _very_ stripped down perl interpreter ;)
		829	*/
569	static void	830	static void
570	coro_run (void *arg)	831	coro_run (void *arg)
571	{	832	{
		833	dTHX;
		834
572	/* coro_run is the alternative tail of transfer(), so unlock here. */	835	/* coro_run is the alternative tail of transfer(), so unlock here. */
573	UNLOCK;	836	UNLOCK;
574		837
575	/*	838	/* we now skip the entersub that lead to transfer() */
576	* this is a _very_ stripped down perl interpreter ;)	839	PL_op = PL_op->op_next;
577	*/
578	PL_top_env = &PL_start_env;
579		840
580	/* inject call to cctx_init */	841	/* inject a fake subroutine call to cctx_init */
581	prepare_cctx ((coro_cctx *)arg);	842	prepare_cctx (aTHX_ (coro_cctx *)arg);
582		843
583	/* somebody will hit me for both perl_run and PL_restartop */	844	/* somebody or something will hit me for both perl_run and PL_restartop */
584	PL_restartop = PL_op;	845	PL_restartop = PL_op;
585	perl_run (PL_curinterp);	846	perl_run (PL_curinterp);
586		847
587	fputs ("FATAL: C coroutine fell over the edge of the world, aborting. Did you call exit in a coroutine?\n", stderr);	848	/*
588	abort ();	849	* If perl-run returns we assume exit() was being called or the coro
		850	* fell off the end, which seems to be the only valid (non-bug)
		851	* reason for perl_run to return. We try to exit by jumping to the
		852	* bootstrap-time "top" top_env, as we cannot restore the "main"
		853	* coroutine as Coro has no such concept
		854	*/
		855	PL_top_env = main_top_env;
		856	JMPENV_JUMP (2); /* I do not feel well about the hardcoded 2 at all */
589	}	857	}
590		858
591	static coro_cctx *	859	static coro_cctx *
592	cctx_new ()	860	cctx_new ()
593	{	861	{
594	coro_cctx *cctx;	862	coro_cctx *cctx;
		863	void *stack_start;
		864	size_t stack_size;
595		865
596	++cctx_count;	866	++cctx_count;
597		867
598	Newz (0, cctx, 1, coro_cctx);	868	Newz (0, cctx, 1, coro_cctx);
599		869
600	#if HAVE_MMAP	870	#if HAVE_MMAP
601		871
602	cctx->ssize = ((STACKSIZE * sizeof (long) + PAGESIZE - 1) / PAGESIZE + STACKGUARD) * PAGESIZE;	872	cctx->ssize = ((coro_stacksize * sizeof (long) + PAGESIZE - 1) / PAGESIZE + CORO_STACKGUARD) * PAGESIZE;
603	/* mmap supposedly does allocate-on-write for us */	873	/* 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);	874	cctx->sptr = mmap (0, cctx->ssize, PROT_EXEC\|PROT_READ\|PROT_WRITE, MAP_PRIVATE\|MAP_ANONYMOUS, 0, 0);
605		875
606	if (cctx->sptr == (void *)-1)	876	if (cctx->sptr != (void *)-1)
607	{
608	perror ("FATAL: unable to mmap stack for coroutine");
609	_exit (EXIT_FAILURE);
610	}	877	{
611
612	# if STACKGUARD	878	# if CORO_STACKGUARD
613	mprotect (cctx->sptr, STACKGUARD * PAGESIZE, PROT_NONE);	879	mprotect (cctx->sptr, CORO_STACKGUARD * PAGESIZE, PROT_NONE);
614	# endif	880	# endif
		881	stack_start = CORO_STACKGUARD * PAGESIZE + (char *)cctx->sptr;
		882	stack_size = cctx->ssize - CORO_STACKGUARD * PAGESIZE;
		883	cctx->flags \|= CC_MAPPED;
		884	}
		885	else
		886	#endif
		887	{
		888	cctx->ssize = coro_stacksize * (long)sizeof (long);
		889	New (0, cctx->sptr, coro_stacksize, long);
615		890
616	#else
617
618	cctx->ssize = STACKSIZE * (long)sizeof (long);
619	New (0, cctx->sptr, STACKSIZE, long);
620
621	if (!cctx->sptr)	891	if (!cctx->sptr)
622	{	892	{
623	perror ("FATAL: unable to malloc stack for coroutine");	893	perror ("FATAL: unable to allocate stack for coroutine");
624	_exit (EXIT_FAILURE);	894	_exit (EXIT_FAILURE);
625	}	895	}
626		896
627	#endif	897	stack_start = cctx->sptr;
		898	stack_size = cctx->ssize;
		899	}
628		900
629	#if USE_VALGRIND	901	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);	902	coro_create (&cctx->cctx, coro_run, (void *)cctx, stack_start, stack_size);
637		903
638	return cctx;	904	return cctx;
639	}	905	}
640		906
641	static void	907	static void
…		…
644	if (!cctx)	910	if (!cctx)
645	return;	911	return;
646		912
647	--cctx_count;	913	--cctx_count;
648		914
649	#if USE_VALGRIND	915	#if CORO_USE_VALGRIND
650	VALGRIND_STACK_DEREGISTER (cctx->valgrind_id);	916	VALGRIND_STACK_DEREGISTER (cctx->valgrind_id);
651	#endif	917	#endif
652		918
653	#if HAVE_MMAP	919	#if HAVE_MMAP
		920	if (cctx->flags & CC_MAPPED)
654	munmap (cctx->sptr, cctx->ssize);	921	munmap (cctx->sptr, cctx->ssize);
655	#else	922	else
		923	#endif
656	Safefree (cctx->sptr);	924	Safefree (cctx->sptr);
657	#endif
658		925
659	Safefree (cctx);	926	Safefree (cctx);
660	}	927	}
661		928
662	static coro_cctx *	929	static coro_cctx *
663	cctx_get ()	930	cctx_get (pTHX)
664	{	931	{
665	coro_cctx *cctx;
666
667	if (cctx_first)	932	while (cctx_first)
668	{	933	{
669	cctx = cctx_first;	934	coro_cctx *cctx = cctx_first;
670	cctx_first = cctx->next;	935	cctx_first = cctx->next;
671	--cctx_idle;	936	--cctx_idle;
672	}	937
673	else	938	if (cctx->ssize >= coro_stacksize && !(cctx->flags & CC_NOREUSE))
674	{	939	return cctx;
675	cctx = cctx_new ();	940
676	PL_op = PL_op->op_next;	941	cctx_destroy (cctx);
677	}	942	}
678		943
679	return cctx;	944	return cctx_new ();
680	}	945	}
681		946
682	static void	947	static void
683	cctx_put (coro_cctx *cctx)	948	cctx_put (coro_cctx *cctx)
684	{	949	{
…		…
687	{	952	{
688	coro_cctx *first = cctx_first;	953	coro_cctx *first = cctx_first;
689	cctx_first = first->next;	954	cctx_first = first->next;
690	--cctx_idle;	955	--cctx_idle;
691		956
692	assert (!first->inuse);
693	cctx_destroy (first);	957	cctx_destroy (first);
694	}	958	}
695		959
696	++cctx_idle;	960	++cctx_idle;
697	cctx->next = cctx_first;	961	cctx->next = cctx_first;
698	cctx_first = cctx;	962	cctx_first = cctx;
699	}	963	}
700		964
701	/* never call directly, always through the coro_state_transfer global variable */	965	/ coroutine switching ***************************************************/
		966
702	static void NOINLINE	967	static void NOINLINE
		968	transfer_check (pTHX_ struct coro prev, struct coro next)
		969	{
		970	if (prev != next)
		971	{
		972	if (!(prev->flags & (CF_RUNNING \| CF_NEW)))
		973	croak ("Coro::State::transfer called with non-running/new prev Coro::State, but can only transfer from running or new states");
		974
		975	if (next->flags & CF_RUNNING)
		976	croak ("Coro::State::transfer called with running next Coro::State, but can only transfer to inactive states");
		977
		978	if (next->flags & CF_DESTROYED)
		979	croak ("Coro::State::transfer called with destroyed next Coro::State, but can only transfer to inactive states");
		980
		981	if (PL_lex_state != LEX_NOTPARSING)
		982	croak ("Coro::State::transfer called while parsing, but this is not supported");
		983	}
		984	}
		985
		986	/* always use the TRANSFER macro */
		987	static void NOINLINE
703	transfer (struct coro prev, struct coro next)	988	transfer (pTHX_ struct coro prev, struct coro next)
704	{	989	{
705	dSTACKLEVEL;	990	dSTACKLEVEL;
706		991
707	/* sometimes transfer is only called to set idle_sp */	992	/* sometimes transfer is only called to set idle_sp */
708	if (!next)	993	if (!next)
709	{	994	{
710	((coro_cctx *)prev)->idle_sp = STACKLEVEL;	995	((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 */	996	assert (((coro_cctx )prev)->idle_te = PL_top_env); / just for the side-effect when asserts are enabled */
712	}	997	}
713	else if (prev != next)	998	else if (prev != next)
714	{	999	{
715	coro_cctx *prev__cctx;	1000	coro_cctx *prev__cctx;
716		1001
717	if (prev->flags & CF_NEW)	1002	if (prev->flags & CF_NEW)
718	{	1003	{
719	/* create a new empty context */	1004	/* create a new empty context */
720	Newz (0, prev->cctx, 1, coro_cctx);	1005	Newz (0, prev->cctx, 1, coro_cctx);
721	prev->cctx->inuse = 1;
722	prev->flags &= ~CF_NEW;	1006	prev->flags &= ~CF_NEW;
723	prev->flags \|= CF_RUNNING;	1007	prev->flags \|= CF_RUNNING;
724	}	1008	}
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		1009
733	prev->flags &= ~CF_RUNNING;	1010	prev->flags &= ~CF_RUNNING;
734	next->flags \|= CF_RUNNING;	1011	next->flags \|= CF_RUNNING;
735		1012
736	LOCK;	1013	LOCK;
…		…
738	if (next->flags & CF_NEW)	1015	if (next->flags & CF_NEW)
739	{	1016	{
740	/* need to start coroutine */	1017	/* need to start coroutine */
741	next->flags &= ~CF_NEW;	1018	next->flags &= ~CF_NEW;
742	/* first get rid of the old state */	1019	/* first get rid of the old state */
743	save_perl (prev);	1020	save_perl (aTHX_ prev);
744	/* setup coroutine call */	1021	/* setup coroutine call */
745	setup_coro (next);	1022	coro_setup (aTHX_ next);
746	/* need a new stack */
747	assert (!next->cctx);
748	}	1023	}
749	else	1024	else
750	{	1025	{
751	/* coroutine already started */	1026	/* coroutine already started */
752	save_perl (prev);	1027	save_perl (aTHX_ prev);
753	load_perl (next);	1028	load_perl (aTHX_ next);
754	}	1029	}
755		1030
756	prev__cctx = prev->cctx;	1031	prev__cctx = prev->cctx;
757		1032
758	/* possibly "free" the cctx */	1033	/* possibly "free" the cctx */
759	if (prev__cctx->idle_sp == STACKLEVEL)	1034	if (prev__cctx->idle_sp == STACKLEVEL && !(prev__cctx->flags & CC_TRACE))
760	{	1035	{
761	/* I assume that STACKLEVEL is a stronger indicator than PL_top_env changes */	1036	/* I assume that STACKLEVEL is a stronger indicator than PL_top_env changes */
762	assert (PL_top_env == prev__cctx->top_env);	1037	assert (("ERROR: current top_env must equal previous top_env", PL_top_env == prev__cctx->idle_te));
763		1038
764	prev->cctx = 0;	1039	prev->cctx = 0;
765		1040
766	cctx_put (prev__cctx);	1041	cctx_put (prev__cctx);
767	prev__cctx->inuse = 0;
768	}	1042	}
769		1043
		1044	++next->usecount;
		1045
770	if (!next->cctx)	1046	if (!next->cctx)
771	{
772	next->cctx = cctx_get ();	1047	next->cctx = cctx_get (aTHX);
773	assert (!next->cctx->inuse);
774	next->cctx->inuse = 1;
775	}
776		1048
777	if (prev__cctx != next->cctx)	1049	if (prev__cctx != next->cctx)
778	{	1050	{
779	prev__cctx->top_env = PL_top_env;	1051	prev__cctx->top_env = PL_top_env;
780	PL_top_env = next->cctx->top_env;	1052	PL_top_env = next->cctx->top_env;
781	coro_transfer (&prev__cctx->cctx, &next->cctx->cctx);	1053	coro_transfer (&prev__cctx->cctx, &next->cctx->cctx);
782	}	1054	}
783		1055
784	free_coro_mortal ();	1056	free_coro_mortal (aTHX);
785
786	UNLOCK;	1057	UNLOCK;
787	}	1058	}
788	}	1059	}
789		1060
790	struct transfer_args	1061	struct transfer_args
791	{	1062	{
792	struct coro prev, next;	1063	struct coro prev, next;
793	};	1064	};
794		1065
795	#define TRANSFER(ta) transfer ((ta).prev, (ta).next)	1066	#define TRANSFER(ta) transfer (aTHX_ (ta).prev, (ta).next)
		1067	#define TRANSFER_CHECK(ta) transfer_check (aTHX_ (ta).prev, (ta).next)
796		1068
		1069	/ high level stuff ******************************************************/
		1070
797	static void	1071	static int
798	coro_state_destroy (struct coro *coro)	1072	coro_state_destroy (pTHX_ struct coro *coro)
799	{	1073	{
800	if (coro->refcnt--)	1074	if (coro->flags & CF_DESTROYED)
801	return;	1075	return 0;
		1076
		1077	coro->flags \|= CF_DESTROYED;
		1078
		1079	if (coro->flags & CF_READY)
		1080	{
		1081	/* reduce nready, as destroying a ready coro effectively unreadies it */
		1082	/* alternative: look through all ready queues and remove the coro */
		1083	LOCK;
		1084	--coro_nready;
		1085	UNLOCK;
		1086	}
		1087	else
		1088	coro->flags \|= CF_READY; /* make sure it is NOT put into the readyqueue */
802		1089
803	if (coro->mainstack && coro->mainstack != main_mainstack)	1090	if (coro->mainstack && coro->mainstack != main_mainstack)
804	{	1091	{
805	struct coro temp;	1092	struct coro temp;
806	Zero (&temp, 1, struct coro);
807	temp.save = CORO_SAVE_ALL;
808		1093
809	if (coro->flags & CF_RUNNING)	1094	if (coro->flags & CF_RUNNING)
810	croak ("FATAL: tried to destroy currently running coroutine");	1095	croak ("FATAL: tried to destroy currently running coroutine");
811		1096
812	save_perl (&temp);	1097	save_perl (aTHX_ &temp);
813	load_perl (coro);	1098	load_perl (aTHX_ coro);
814		1099
815	coro_destroy_stacks ();	1100	coro_destroy (aTHX_ coro);
816		1101
817	load_perl (&temp); /* this will get rid of defsv etc.. */	1102	load_perl (aTHX_ &temp); /* this will get rid of defsv etc.. */
818		1103
819	coro->mainstack = 0;	1104	coro->mainstack = 0;
820	}	1105	}
821		1106
822	cctx_destroy (coro->cctx);	1107	cctx_destroy (coro->cctx);
823	SvREFCNT_dec (coro->args);	1108	SvREFCNT_dec (coro->args);
824	Safefree (coro);	1109
		1110	if (coro->next) coro->next->prev = coro->prev;
		1111	if (coro->prev) coro->prev->next = coro->next;
		1112	if (coro == coro_first) coro_first = coro->next;
		1113
		1114	return 1;
825	}	1115	}
826		1116
827	static int	1117	static int
828	coro_state_clear (pTHX_ SV sv, MAGIC mg)	1118	coro_state_free (pTHX_ SV sv, MAGIC mg)
829	{	1119	{
830	struct coro coro = (struct coro )mg->mg_ptr;	1120	struct coro coro = (struct coro )mg->mg_ptr;
831	mg->mg_ptr = 0;	1121	mg->mg_ptr = 0;
832		1122
		1123	coro->hv = 0;
		1124
		1125	if (--coro->refcnt < 0)
		1126	{
833	coro_state_destroy (coro);	1127	coro_state_destroy (aTHX_ coro);
		1128	Safefree (coro);
		1129	}
834		1130
835	return 0;	1131	return 0;
836	}	1132	}
837		1133
838	static int	1134	static int
…		…
845	return 0;	1141	return 0;
846	}	1142	}
847		1143
848	static MGVTBL coro_state_vtbl = {	1144	static MGVTBL coro_state_vtbl = {
849	0, 0, 0, 0,	1145	0, 0, 0, 0,
850	coro_state_clear,	1146	coro_state_free,
851	0,	1147	0,
852	#ifdef MGf_DUP	1148	#ifdef MGf_DUP
853	coro_state_dup,	1149	coro_state_dup,
854	#else	1150	#else
855	# define MGf_DUP 0	1151	# define MGf_DUP 0
856	#endif	1152	#endif
857	};	1153	};
858		1154
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	1155	static void
882	prepare_transfer (struct transfer_args ta, SV prev_sv, SV *next_sv)	1156	prepare_transfer (pTHX_ struct transfer_args ta, SV prev_sv, SV *next_sv)
883	{	1157	{
884	ta->prev = SvSTATE (prev_sv);	1158	ta->prev = SvSTATE (prev_sv);
885	ta->next = SvSTATE (next_sv);	1159	ta->next = SvSTATE (next_sv);
		1160	TRANSFER_CHECK (*ta);
886	}	1161	}
887		1162
888	static void	1163	static void
889	api_transfer (SV prev_sv, SV next_sv)	1164	api_transfer (SV prev_sv, SV next_sv)
890	{	1165	{
		1166	dTHX;
891	struct transfer_args ta;	1167	struct transfer_args ta;
892		1168
893	prepare_transfer (&ta, prev_sv, next_sv);	1169	prepare_transfer (aTHX_ &ta, prev_sv, next_sv);
894	TRANSFER (ta);	1170	TRANSFER (ta);
895	}	1171	}
896		1172
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 ******************************************************************/	1173	/ Coro ******************************************************************/
910		1174
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	1175	static void
924	coro_enq (SV *coro_sv)	1176	coro_enq (pTHX_ SV *coro_sv)
925	{	1177	{
926	av_push (coro_ready [SvSTATE (coro_sv)->prio - PRIO_MIN], coro_sv);	1178	av_push (coro_ready [SvSTATE (coro_sv)->prio - PRIO_MIN], coro_sv);
927	coro_nready++;
928	}	1179	}
929		1180
930	static SV *	1181	static SV *
931	coro_deq (int min_prio)	1182	coro_deq (pTHX_ int min_prio)
932	{	1183	{
933	int prio = PRIO_MAX - PRIO_MIN;	1184	int prio = PRIO_MAX - PRIO_MIN;
934		1185
935	min_prio -= PRIO_MIN;	1186	min_prio -= PRIO_MIN;
936	if (min_prio < 0)	1187	if (min_prio < 0)
937	min_prio = 0;	1188	min_prio = 0;
938		1189
939	for (prio = PRIO_MAX - PRIO_MIN + 1; --prio >= min_prio; )	1190	for (prio = PRIO_MAX - PRIO_MIN + 1; --prio >= min_prio; )
940	if (AvFILLp (coro_ready [prio]) >= 0)	1191	if (AvFILLp (coro_ready [prio]) >= 0)
941	{
942	coro_nready--;
943	return av_shift (coro_ready [prio]);	1192	return av_shift (coro_ready [prio]);
944	}
945		1193
946	return 0;	1194	return 0;
947	}	1195	}
948		1196
949	static int	1197	static int
950	api_ready (SV *coro_sv)	1198	api_ready (SV *coro_sv)
951	{	1199	{
		1200	dTHX;
952	struct coro *coro;	1201	struct coro *coro;
953		1202
954	if (SvROK (coro_sv))	1203	if (SvROK (coro_sv))
955	coro_sv = SvRV (coro_sv);	1204	coro_sv = SvRV (coro_sv);
956		1205
…		…
960	return 0;	1209	return 0;
961		1210
962	coro->flags \|= CF_READY;	1211	coro->flags \|= CF_READY;
963		1212
964	LOCK;	1213	LOCK;
965	coro_enq (SvREFCNT_inc (coro_sv));	1214	coro_enq (aTHX_ SvREFCNT_inc (coro_sv));
		1215	++coro_nready;
966	UNLOCK;	1216	UNLOCK;
967		1217
968	return 1;	1218	return 1;
969	}	1219	}
970		1220
971	static int	1221	static int
972	api_is_ready (SV *coro_sv)	1222	api_is_ready (SV *coro_sv)
973	{	1223	{
		1224	dTHX;
974	return !!SvSTATE (coro_sv)->flags & CF_READY;	1225	return !!(SvSTATE (coro_sv)->flags & CF_READY);
975	}	1226	}
976		1227
977	static void	1228	static void
978	prepare_schedule (struct transfer_args *ta)	1229	prepare_schedule (pTHX_ struct transfer_args *ta)
979	{	1230	{
980	SV prev, next;	1231	SV prev_sv, next_sv;
981		1232
982	for (;;)	1233	for (;;)
983	{	1234	{
984	LOCK;	1235	LOCK;
985	next = coro_deq (PRIO_MIN);	1236	next_sv = coro_deq (aTHX_ PRIO_MIN);
		1237
		1238	/* nothing to schedule: call the idle handler */
		1239	if (!next_sv)
		1240	{
		1241	dSP;
		1242	UNLOCK;
		1243
		1244	ENTER;
		1245	SAVETMPS;
		1246
		1247	PUSHMARK (SP);
		1248	PUTBACK;
		1249	call_sv (get_sv ("Coro::idle", FALSE), G_DISCARD);
		1250
		1251	FREETMPS;
		1252	LEAVE;
		1253	continue;
		1254	}
		1255
		1256	ta->next = SvSTATE (next_sv);
		1257
		1258	/* cannot transfer to destroyed coros, skip and look for next */
		1259	if (ta->next->flags & CF_DESTROYED)
		1260	{
		1261	UNLOCK;
		1262	SvREFCNT_dec (next_sv);
		1263	/* coro_nready is already taken care of by destroy */
		1264	continue;
		1265	}
		1266
		1267	--coro_nready;
986	UNLOCK;	1268	UNLOCK;
987
988	if (next)
989	break;	1269	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	}	1270	}
1004	}
1005
1006	prev = SvRV (coro_current);
1007	SvRV_set (coro_current, next);
1008		1271
1009	/* free this only after the transfer */	1272	/* free this only after the transfer */
1010	LOCK;	1273	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);	1274	ta->prev = SvSTATE (prev_sv);
1019	ta->next = SvSTATE (next);	1275	TRANSFER_CHECK (*ta);
1020
1021	assert (ta->next->flags & CF_READY);	1276	assert (ta->next->flags & CF_READY);
1022	ta->next->flags &= ~CF_READY;	1277	ta->next->flags &= ~CF_READY;
1023	}	1278	SvRV_set (coro_current, next_sv);
1024		1279
		1280	LOCK;
		1281	free_coro_mortal (aTHX);
		1282	coro_mortal = prev_sv;
		1283	UNLOCK;
		1284	}
		1285
1025	static void	1286	static void
1026	prepare_cede (struct transfer_args *ta)	1287	prepare_cede (pTHX_ struct transfer_args *ta)
1027	{	1288	{
1028	api_ready (coro_current);	1289	api_ready (coro_current);
1029
1030	prepare_schedule (ta);	1290	prepare_schedule (aTHX_ ta);
		1291	}
		1292
		1293	static int
		1294	prepare_cede_notself (pTHX_ struct transfer_args *ta)
		1295	{
		1296	if (coro_nready)
		1297	{
		1298	SV *prev = SvRV (coro_current);
		1299	prepare_schedule (aTHX_ ta);
		1300	api_ready (prev);
		1301	return 1;
		1302	}
		1303	else
		1304	return 0;
1031	}	1305	}
1032		1306
1033	static void	1307	static void
1034	api_schedule (void)	1308	api_schedule (void)
1035	{	1309	{
		1310	dTHX;
1036	struct transfer_args ta;	1311	struct transfer_args ta;
1037		1312
1038	prepare_schedule (&ta);	1313	prepare_schedule (aTHX_ &ta);
1039	TRANSFER (ta);	1314	TRANSFER (ta);
1040	}	1315	}
1041		1316
1042	static void	1317	static int
1043	api_cede (void)	1318	api_cede (void)
1044	{	1319	{
		1320	dTHX;
1045	struct transfer_args ta;	1321	struct transfer_args ta;
1046		1322
1047	prepare_cede (&ta);	1323	prepare_cede (aTHX_ &ta);
		1324
		1325	if (ta.prev != ta.next)
		1326	{
1048	TRANSFER (ta);	1327	TRANSFER (ta);
		1328	return 1;
		1329	}
		1330	else
		1331	return 0;
1049	}	1332	}
1050		1333
		1334	static int
		1335	api_cede_notself (void)
		1336	{
		1337	dTHX;
		1338	struct transfer_args ta;
		1339
		1340	if (prepare_cede_notself (aTHX_ &ta))
		1341	{
		1342	TRANSFER (ta);
		1343	return 1;
		1344	}
		1345	else
		1346	return 0;
		1347	}
		1348
		1349	static void
		1350	api_trace (SV *coro_sv, int flags)
		1351	{
		1352	dTHX;
		1353	struct coro *coro = SvSTATE (coro_sv);
		1354
		1355	if (flags & CC_TRACE)
		1356	{
		1357	if (!coro->cctx)
		1358	coro->cctx = cctx_new ();
		1359	else if (!(coro->cctx->flags & CC_TRACE))
		1360	croak ("cannot enable tracing on coroutine with custom stack");
		1361
		1362	coro->cctx->flags \|= CC_NOREUSE \| (flags & (CC_TRACE \| CC_TRACE_ALL));
		1363	}
		1364	else if (coro->cctx && coro->cctx->flags & CC_TRACE)
		1365	{
		1366	coro->cctx->flags &= ~(CC_TRACE \| CC_TRACE_ALL);
		1367
		1368	if (coro->flags & CF_RUNNING)
		1369	PL_runops = RUNOPS_DEFAULT;
		1370	else
		1371	coro->runops = RUNOPS_DEFAULT;
		1372	}
		1373	}
		1374
1051	MODULE = Coro::State PACKAGE = Coro::State	1375	MODULE = Coro::State PACKAGE = Coro::State PREFIX = api_
1052		1376
1053	PROTOTYPES: DISABLE	1377	PROTOTYPES: DISABLE
1054		1378
1055	BOOT:	1379	BOOT:
1056	{	1380	{
1057	#ifdef USE_ITHREADS	1381	#ifdef USE_ITHREADS
1058	MUTEX_INIT (&coro_mutex);	1382	MUTEX_INIT (&coro_mutex);
1059	#endif	1383	#endif
1060	BOOT_PAGESIZE;	1384	BOOT_PAGESIZE;
1061		1385
		1386	irsgv = gv_fetchpv ("/", 1, SVt_PV);
		1387
1062	coro_state_stash = gv_stashpv ("Coro::State", TRUE);	1388	coro_state_stash = gv_stashpv ("Coro::State", TRUE);
1063		1389
		1390	newCONSTSUB (coro_state_stash, "CC_TRACE" , newSViv (CC_TRACE));
		1391	newCONSTSUB (coro_state_stash, "CC_TRACE_SUB" , newSViv (CC_TRACE_SUB));
1064	newCONSTSUB (coro_state_stash, "SAVE_DEFAV", newSViv (CORO_SAVE_DEFAV));	1392	newCONSTSUB (coro_state_stash, "CC_TRACE_LINE", newSViv (CC_TRACE_LINE));
1065	newCONSTSUB (coro_state_stash, "SAVE_DEFSV", newSViv (CORO_SAVE_DEFSV));
1066	newCONSTSUB (coro_state_stash, "SAVE_ERRSV", newSViv (CORO_SAVE_ERRSV));
1067	newCONSTSUB (coro_state_stash, "SAVE_IRSSV", newSViv (CORO_SAVE_IRSSV));
1068	newCONSTSUB (coro_state_stash, "SAVE_ALL", newSViv (CORO_SAVE_ALL));	1393	newCONSTSUB (coro_state_stash, "CC_TRACE_ALL" , newSViv (CC_TRACE_ALL));
1069		1394
1070	main_mainstack = PL_mainstack;	1395	main_mainstack = PL_mainstack;
		1396	main_top_env = PL_top_env;
		1397
		1398	while (main_top_env->je_prev)
		1399	main_top_env = main_top_env->je_prev;
1071		1400
1072	coroapi.ver = CORO_API_VERSION;	1401	coroapi.ver = CORO_API_VERSION;
1073	coroapi.transfer = api_transfer;	1402	coroapi.transfer = api_transfer;
1074		1403
1075	assert (("PRIO_NORMAL must be 0", !PRIO_NORMAL));	1404	assert (("PRIO_NORMAL must be 0", !PRIO_NORMAL));
…		…
1082	struct coro *coro;	1411	struct coro *coro;
1083	HV *hv;	1412	HV *hv;
1084	int i;	1413	int i;
1085		1414
1086	Newz (0, coro, 1, struct coro);	1415	Newz (0, coro, 1, struct coro);
1087	coro->args = newAV ();	1416	coro->args = newAV ();
1088	coro->save = CORO_SAVE_ALL;
1089	coro->flags = CF_NEW;	1417	coro->flags = CF_NEW;
1090		1418
		1419	if (coro_first) coro_first->prev = coro;
		1420	coro->next = coro_first;
		1421	coro_first = coro;
		1422
1091	hv = newHV ();	1423	coro->hv = hv = newHV ();
1092	sv_magicext ((SV )hv, 0, PERL_MAGIC_ext, &coro_state_vtbl, (char )coro, 0)->mg_flags \|= MGf_DUP;	1424	sv_magicext ((SV )hv, 0, PERL_MAGIC_ext, &coro_state_vtbl, (char )coro, 0)->mg_flags \|= MGf_DUP;
1093	RETVAL = sv_bless (newRV_noinc ((SV *)hv), gv_stashpv (klass, 1));	1425	RETVAL = sv_bless (newRV_noinc ((SV *)hv), gv_stashpv (klass, 1));
1094		1426
1095	for (i = 1; i < items; i++)	1427	for (i = 1; i < items; i++)
1096	av_push (coro->args, newSVsv (ST (i)));	1428	av_push (coro->args, newSVsv (ST (i)));
1097	}	1429	}
1098	OUTPUT:	1430	OUTPUT:
1099	RETVAL	1431	RETVAL
1100		1432
1101	int	1433	# these not obviously related functions are all rolled into the same xs
1102	save (SV *coro, int new_save = -1)	1434	# function to increase chances that they all will call transfer with the same
1103	CODE:	1435	# stack offset
1104	RETVAL = api_save (coro, new_save);
1105	OUTPUT:
1106	RETVAL
1107
1108	void	1436	void
1109	_set_stacklevel (...)	1437	_set_stacklevel (...)
1110	ALIAS:	1438	ALIAS:
1111	Coro::State::transfer = 1	1439	Coro::State::transfer = 1
1112	Coro::schedule = 2	1440	Coro::schedule = 2
1113	Coro::cede = 3	1441	Coro::cede = 3
		1442	Coro::cede_notself = 4
1114	CODE:	1443	CODE:
1115	{	1444	{
1116	struct transfer_args ta;	1445	struct transfer_args ta;
1117		1446
1118	switch (ix)	1447	switch (ix)
…		…
1124		1453
1125	case 1:	1454	case 1:
1126	if (items != 2)	1455	if (items != 2)
1127	croak ("Coro::State::transfer (prev,next) expects two arguments, not %d", items);	1456	croak ("Coro::State::transfer (prev,next) expects two arguments, not %d", items);
1128		1457
1129	prepare_transfer (&ta, ST (0), ST (1));	1458	prepare_transfer (aTHX_ &ta, ST (0), ST (1));
1130	break;	1459	break;
1131		1460
1132	case 2:	1461	case 2:
1133	prepare_schedule (&ta);	1462	prepare_schedule (aTHX_ &ta);
1134	break;	1463	break;
1135		1464
1136	case 3:	1465	case 3:
1137	prepare_cede (&ta);	1466	prepare_cede (aTHX_ &ta);
		1467	break;
		1468
		1469	case 4:
		1470	if (!prepare_cede_notself (aTHX_ &ta))
		1471	XSRETURN_EMPTY;
		1472
1138	break;	1473	break;
1139	}	1474	}
1140		1475
		1476	BARRIER;
1141	TRANSFER (ta);	1477	TRANSFER (ta);
1142	}
1143		1478
1144	void	1479	if (GIMME_V != G_VOID && ta.next != ta.prev)
1145	_clone_state_from (SV dst, SV src)	1480	XSRETURN_YES;
		1481	}
		1482
		1483	bool
		1484	_destroy (SV *coro_sv)
1146	CODE:	1485	CODE:
1147	{	1486	RETVAL = coro_state_destroy (aTHX_ SvSTATE (coro_sv));
1148	struct coro *coro_src = SvSTATE (src);	1487	OUTPUT:
1149		1488	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		1489
1156	void	1490	void
1157	_exit (code)	1491	_exit (code)
1158	int code	1492	int code
1159	PROTOTYPE: $	1493	PROTOTYPE: $
1160	CODE:	1494	CODE:
1161	_exit (code);	1495	_exit (code);
1162		1496
1163	int	1497	int
		1498	cctx_stacksize (int new_stacksize = 0)
		1499	CODE:
		1500	RETVAL = coro_stacksize;
		1501	if (new_stacksize)
		1502	coro_stacksize = new_stacksize;
		1503	OUTPUT:
		1504	RETVAL
		1505
		1506	int
1164	cctx_count ()	1507	cctx_count ()
1165	CODE:	1508	CODE:
1166	RETVAL = cctx_count;	1509	RETVAL = cctx_count;
1167	OUTPUT:	1510	OUTPUT:
1168	RETVAL	1511	RETVAL
…		…
1172	CODE:	1515	CODE:
1173	RETVAL = cctx_idle;	1516	RETVAL = cctx_idle;
1174	OUTPUT:	1517	OUTPUT:
1175	RETVAL	1518	RETVAL
1176		1519
		1520	void
		1521	list ()
		1522	PPCODE:
		1523	{
		1524	struct coro *coro;
		1525	for (coro = coro_first; coro; coro = coro->next)
		1526	if (coro->hv)
		1527	XPUSHs (sv_2mortal (newRV_inc ((SV *)coro->hv)));
		1528	}
		1529
		1530	void
		1531	call (Coro::State coro, SV *coderef)
		1532	ALIAS:
		1533	eval = 1
		1534	CODE:
		1535	{
		1536	if (coro->mainstack)
		1537	{
		1538	struct coro temp;
		1539	Zero (&temp, 1, struct coro);
		1540
		1541	if (!(coro->flags & CF_RUNNING))
		1542	{
		1543	save_perl (aTHX_ &temp);
		1544	load_perl (aTHX_ coro);
		1545	}
		1546
		1547	{
		1548	dSP;
		1549	ENTER;
		1550	SAVETMPS;
		1551	PUSHMARK (SP);
		1552	PUTBACK;
		1553	if (ix)
		1554	eval_sv (coderef, 0);
		1555	else
		1556	call_sv (coderef, G_KEEPERR \| G_EVAL \| G_VOID \| G_DISCARD);
		1557	SPAGAIN;
		1558	FREETMPS;
		1559	LEAVE;
		1560	PUTBACK;
		1561	}
		1562
		1563	if (!(coro->flags & CF_RUNNING))
		1564	{
		1565	save_perl (aTHX_ coro);
		1566	load_perl (aTHX_ &temp);
		1567	}
		1568	}
		1569	}
		1570
		1571	SV *
		1572	is_ready (Coro::State coro)
		1573	PROTOTYPE: $
		1574	ALIAS:
		1575	is_ready = CF_READY
		1576	is_running = CF_RUNNING
		1577	is_new = CF_NEW
		1578	is_destroyed = CF_DESTROYED
		1579	CODE:
		1580	RETVAL = boolSV (coro->flags & ix);
		1581	OUTPUT:
		1582	RETVAL
		1583
		1584	void
		1585	api_trace (SV *coro, int flags = CC_TRACE \| CC_TRACE_SUB)
		1586
		1587	SV *
		1588	has_stack (Coro::State coro)
		1589	PROTOTYPE: $
		1590	CODE:
		1591	RETVAL = boolSV (!!coro->cctx);
		1592	OUTPUT:
		1593	RETVAL
		1594
		1595	int
		1596	is_traced (Coro::State coro)
		1597	PROTOTYPE: $
		1598	CODE:
		1599	RETVAL = (coro->cctx ? coro->cctx->flags : 0) & CC_TRACE_ALL;
		1600	OUTPUT:
		1601	RETVAL
		1602
		1603	IV
		1604	rss (Coro::State coro)
		1605	PROTOTYPE: $
		1606	ALIAS:
		1607	usecount = 1
		1608	CODE:
		1609	switch (ix)
		1610	{
		1611	case 0: RETVAL = coro_rss (aTHX_ coro); break;
		1612	case 1: RETVAL = coro->usecount; break;
		1613	}
		1614	OUTPUT:
		1615	RETVAL
		1616
		1617
1177	MODULE = Coro::State PACKAGE = Coro	1618	MODULE = Coro::State PACKAGE = Coro
1178		1619
1179	BOOT:	1620	BOOT:
1180	{	1621	{
1181	int i;	1622	int i;
		1623
		1624	sv_pool_rss = get_sv ("Coro::POOL_RSS" , TRUE);
		1625	sv_pool_size = get_sv ("Coro::POOL_SIZE" , TRUE);
		1626	av_async_pool = get_av ("Coro::async_pool", TRUE);
		1627
		1628	coro_current = get_sv ("Coro::current", FALSE);
		1629	SvREADONLY_on (coro_current);
1182		1630
1183	coro_stash = gv_stashpv ("Coro", TRUE);	1631	coro_stash = gv_stashpv ("Coro", TRUE);
1184		1632
1185	newCONSTSUB (coro_stash, "PRIO_MAX", newSViv (PRIO_MAX));	1633	newCONSTSUB (coro_stash, "PRIO_MAX", newSViv (PRIO_MAX));
1186	newCONSTSUB (coro_stash, "PRIO_HIGH", newSViv (PRIO_HIGH));	1634	newCONSTSUB (coro_stash, "PRIO_HIGH", newSViv (PRIO_HIGH));
1187	newCONSTSUB (coro_stash, "PRIO_NORMAL", newSViv (PRIO_NORMAL));	1635	newCONSTSUB (coro_stash, "PRIO_NORMAL", newSViv (PRIO_NORMAL));
1188	newCONSTSUB (coro_stash, "PRIO_LOW", newSViv (PRIO_LOW));	1636	newCONSTSUB (coro_stash, "PRIO_LOW", newSViv (PRIO_LOW));
1189	newCONSTSUB (coro_stash, "PRIO_IDLE", newSViv (PRIO_IDLE));	1637	newCONSTSUB (coro_stash, "PRIO_IDLE", newSViv (PRIO_IDLE));
1190	newCONSTSUB (coro_stash, "PRIO_MIN", newSViv (PRIO_MIN));	1638	newCONSTSUB (coro_stash, "PRIO_MIN", newSViv (PRIO_MIN));
1191		1639
1192	coro_current = get_sv ("Coro::current", FALSE);
1193	SvREADONLY_on (coro_current);
1194
1195	for (i = PRIO_MAX - PRIO_MIN + 1; i--; )	1640	for (i = PRIO_MAX - PRIO_MIN + 1; i--; )
1196	coro_ready[i] = newAV ();	1641	coro_ready[i] = newAV ();
1197		1642
1198	{	1643	{
1199	SV *sv = perl_get_sv("Coro::API", 1);	1644	SV *sv = perl_get_sv("Coro::API", 1);
1200		1645
1201	coroapi.schedule = api_schedule;	1646	coroapi.schedule = api_schedule;
1202	coroapi.save = api_save;
1203	coroapi.cede = api_cede;	1647	coroapi.cede = api_cede;
		1648	coroapi.cede_notself = api_cede_notself;
1204	coroapi.ready = api_ready;	1649	coroapi.ready = api_ready;
1205	coroapi.is_ready = api_is_ready;	1650	coroapi.is_ready = api_is_ready;
1206	coroapi.nready = &coro_nready;	1651	coroapi.nready = &coro_nready;
1207	coroapi.current = coro_current;	1652	coroapi.current = coro_current;
1208		1653
1209	GCoroAPI = &coroapi;	1654	GCoroAPI = &coroapi;
1210	sv_setiv (sv, (IV)&coroapi);	1655	sv_setiv (sv, (IV)&coroapi);
1211	SvREADONLY_on (sv);	1656	SvREADONLY_on (sv);
1212	}	1657	}
…		…
1228	RETVAL = coro->prio;	1673	RETVAL = coro->prio;
1229		1674
1230	if (items > 1)	1675	if (items > 1)
1231	{	1676	{
1232	if (ix)	1677	if (ix)
1233	newprio += coro->prio;	1678	newprio = coro->prio - newprio;
1234		1679
1235	if (newprio < PRIO_MIN) newprio = PRIO_MIN;	1680	if (newprio < PRIO_MIN) newprio = PRIO_MIN;
1236	if (newprio > PRIO_MAX) newprio = PRIO_MAX;	1681	if (newprio > PRIO_MAX) newprio = PRIO_MAX;
1237		1682
1238	coro->prio = newprio;	1683	coro->prio = newprio;
1239	}	1684	}
1240	}	1685	}
		1686	OUTPUT:
		1687	RETVAL
1241		1688
1242	SV *	1689	SV *
1243	ready (SV *self)	1690	ready (SV *self)
1244	PROTOTYPE: $	1691	PROTOTYPE: $
1245	CODE:	1692	CODE:
1246	RETVAL = boolSV (api_ready (self));	1693	RETVAL = boolSV (api_ready (self));
1247	OUTPUT:	1694	OUTPUT:
1248	RETVAL	1695	RETVAL
1249		1696
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	1697	int
1259	nready (...)	1698	nready (...)
1260	PROTOTYPE:	1699	PROTOTYPE:
1261	CODE:	1700	CODE:
1262	RETVAL = coro_nready;	1701	RETVAL = coro_nready;
1263	OUTPUT:	1702	OUTPUT:
1264	RETVAL	1703	RETVAL
1265		1704
		1705	# for async_pool speedup
		1706	void
		1707	_pool_1 (SV *cb)
		1708	CODE:
		1709	{
		1710	int i, len;
		1711	HV hv = (HV )SvRV (coro_current);
		1712	AV *defav = GvAV (PL_defgv);
		1713	SV *invoke = hv_delete (hv, "_invoke", sizeof ("_invoke") - 1, 0);
		1714	AV *invoke_av;
		1715
		1716	if (!invoke)
		1717	croak ("\3terminate\2\n");
		1718
		1719	hv_store (hv, "desc", sizeof ("desc") - 1,
		1720	newSVpvn ("[async_pool]", sizeof ("[async_pool]") - 1), 0);
		1721
		1722	invoke_av = (AV *)SvRV (invoke);
		1723	len = av_len (invoke_av);
		1724
		1725	sv_setsv (cb, AvARRAY (invoke_av)[0]);
		1726
		1727	if (len > 0)
		1728	{
		1729	av_fill (defav, len - 1);
		1730	for (i = 0; i < len; ++i)
		1731	av_store (defav, i, SvREFCNT_inc (AvARRAY (invoke_av)[i + 1]));
		1732	}
		1733
		1734	SvREFCNT_dec (invoke);
		1735	}
		1736
		1737	void
		1738	_pool_2 (SV *cb)
		1739	CODE:
		1740	{
		1741	struct coro *coro = SvSTATE (coro_current);
		1742
		1743	sv_setsv (cb, &PL_sv_undef);
		1744
		1745	if (coro_rss (aTHX_ coro) > SvIV (sv_pool_rss)
		1746	\|\| av_len (av_async_pool) + 1 >= SvIV (sv_pool_size))
		1747	croak ("\3terminate\2\n");
		1748
		1749	av_clear (GvAV (PL_defgv));
		1750	hv_store ((HV *)SvRV (coro_current), "desc", sizeof ("desc") - 1,
		1751	newSVpvn ("[async_pool idle]", sizeof ("[async_pool idle]") - 1), 0);
		1752
		1753	coro->prio = 0;
		1754
		1755	if (coro->cctx && (coro->cctx->flags & CC_TRACE))
		1756	api_trace (coro_current, 0);
		1757
		1758	av_push (av_async_pool, newSVsv (coro_current));
		1759	}
		1760
		1761
1266	MODULE = Coro::State PACKAGE = Coro::AIO	1762	MODULE = Coro::State PACKAGE = Coro::AIO
1267		1763
1268	SV *	1764	SV *
1269	_get_state ()	1765	_get_state ()
1270	CODE:	1766	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 1.179 by root, Wed Oct 3 16:03:17 2007 UTC

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