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

Comparing Coro/Coro/State.xs (file contents):
Revision 1.139 by root, Sun Jan 14 21:13:41 2007 UTC vs.
Revision 1.195 by root, Sat Oct 6 00:35:41 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
…		…
70	/* 5.8.7 */	75	/* 5.8.7 */
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
		80	/* 5.8.8 */
		81	#ifndef GV_NOTQUAL
		82	# define GV_NOTQUAL 0
		83	#endif
		84	#ifndef newSV
		85	# define newSV(l) NEWSV(0,l)
		86	#endif
		87
75	#if !__i386 && !__x86_64 && !__powerpc && !__m68k && !__alpha && !__mips && !__sparc64	88	#if !__i386 && !__x86_64 && !__powerpc && !__m68k && !__alpha && !__mips && !__sparc64
76	# undef STACKGUARD	89	# undef CORO_STACKGUARD
77	#endif	90	#endif
78		91
79	#ifndef STACKGUARD	92	#ifndef CORO_STACKGUARD
80	# define STACKGUARD 0	93	# define CORO_STACKGUARD 0
81	#endif	94	#endif
82		95
83	/* prefer perl internal functions over our own? */	96	/* prefer perl internal functions over our own? */
84	#ifndef PREFER_PERL_FUNCTIONS	97	#ifndef CORO_PREFER_PERL_FUNCTIONS
85	# define PREFER_PERL_FUNCTIONS 0	98	# define CORO_PREFER_PERL_FUNCTIONS 0
86	#endif	99	#endif
87		100
88	/* The next macro should declare a variable stacklevel that contains and approximation	101	/* 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	102	* portable way as possible. */
90	* and should be unique. */
91	#define dSTACKLEVEL int stacklevel	103	#define dSTACKLEVEL volatile char stacklevel
92	#define STACKLEVEL ((void *)&stacklevel)	104	#define STACKLEVEL ((void *)&stacklevel)
93		105
94	#define IN_DESTRUCT (PL_main_cv == Nullcv)	106	#define IN_DESTRUCT (PL_main_cv == Nullcv)
95		107
96	#if __GNUC__ >= 3	108	#if __GNUC__ >= 3
97	# define attribute(x) __attribute__(x)	109	# define attribute(x) __attribute__(x)
98	# define BARRIER __asm__ __volatile__ ("" : : : "memory")	110	# define BARRIER __asm__ __volatile__ ("" : : : "memory")
		111	# define expect(expr,value) __builtin_expect ((expr),(value))
99	#else	112	#else
100	# define attribute(x)	113	# define attribute(x)
101	# define BARRIER	114	# define BARRIER
		115	# define expect(expr,value) (expr)
102	#endif	116	#endif
		117
		118	#define expect_false(expr) expect ((expr) != 0, 0)
		119	#define expect_true(expr) expect ((expr) != 0, 1)
103		120
104	#define NOINLINE attribute ((noinline))	121	#define NOINLINE attribute ((noinline))
105		122
106	#include "CoroAPI.h"	123	#include "CoroAPI.h"
107		124
…		…
121	I32 laststype;	138	I32 laststype;
122	int laststatval;	139	int laststatval;
123	Stat_t statcache;	140	Stat_t statcache;
124	};	141	};
125		142
		143	static size_t coro_stacksize = CORO_STACKSIZE;
126	static struct CoroAPI coroapi;	144	static struct CoroAPI coroapi;
127	static AV main_mainstack; / used to differentiate between $main and others */	145	static AV main_mainstack; / used to differentiate between $main and others */
		146	static JMPENV *main_top_env;
128	static HV coro_state_stash, coro_stash;	147	static HV coro_state_stash, coro_stash;
129	static SV coro_mortal; / will be freed after next transfer */	148	static SV coro_mortal; / will be freed after next transfer */
130		149
		150	static GV irsgv; / $/ */
		151	static GV stdoutgv; / STDOUT /
		152
		153	/* async_pool helper stuff */
		154	static SV *sv_pool_rss;
		155	static SV *sv_pool_size;
		156	static AV *av_async_pool;
		157
131	static struct coro_cctx *cctx_first;	158	static struct coro_cctx *cctx_first;
132	static int cctx_count, cctx_idle;	159	static int cctx_count, cctx_idle;
		160
		161	enum {
		162	CC_MAPPED = 0x01,
		163	CC_NOREUSE = 0x02, /* throw this away after tracing */
		164	CC_TRACE = 0x04,
		165	CC_TRACE_SUB = 0x08, /* trace sub calls */
		166	CC_TRACE_LINE = 0x10, /* trace each statement */
		167	CC_TRACE_ALL = CC_TRACE_SUB \| CC_TRACE_LINE,
		168	};
133		169
134	/* this is a structure representing a c-level coroutine */	170	/* this is a structure representing a c-level coroutine */
135	typedef struct coro_cctx {	171	typedef struct coro_cctx {
136	struct coro_cctx *next;	172	struct coro_cctx *next;
137		173
138	/* the stack */	174	/* the stack */
139	void *sptr;	175	void *sptr;
140	long ssize; /* positive == mmap, otherwise malloc */	176	size_t ssize;
141		177
142	/* cpu state */	178	/* cpu state */
143	void idle_sp; / sp of top-level transfer/schedule/cede call */	179	void idle_sp; / sp of top-level transfer/schedule/cede call */
144	JMPENV idle_te; / same as idle_sp, but for top_env, TODO: remove once stable */	180	JMPENV idle_te; / same as idle_sp, but for top_env, TODO: remove once stable */
145	JMPENV *top_env;	181	JMPENV *top_env;
146	coro_context cctx;	182	coro_context cctx;
147		183
148	int inuse;
149
150	#if USE_VALGRIND	184	#if CORO_USE_VALGRIND
151	int valgrind_id;	185	int valgrind_id;
152	#endif	186	#endif
		187	unsigned char flags;
153	} coro_cctx;	188	} coro_cctx;
154		189
155	enum {	190	enum {
156	CF_RUNNING = 0x0001, /* coroutine is running */	191	CF_RUNNING = 0x0001, /* coroutine is running */
157	CF_READY = 0x0002, /* coroutine is ready */	192	CF_READY = 0x0002, /* coroutine is ready */
…		…
165	coro_cctx *cctx;	200	coro_cctx *cctx;
166		201
167	/* data associated with this coroutine (initial args) */	202	/* data associated with this coroutine (initial args) */
168	AV *args;	203	AV *args;
169	int refcnt;	204	int refcnt;
170	int save; /* CORO_SAVE flags */
171	int flags; /* CF_ flags */	205	int flags; /* CF_ flags */
172		206
173	/* optionally saved, might be zero */	207	/* optionally saved, might be zero */
174	AV defav; / @_ */	208	AV defav; / @_ */
175	SV defsv; / $_ */	209	SV defsv; / $_ */
176	SV errsv; / $@ */	210	SV errsv; / $@ */
		211	SV deffh; / default filehandle */
177	SV irssv; / $/ */	212	SV irssv; / $/ */
178	SV irssv_sv; / real $/ cache */	213	SV irssv_sv; / real $/ cache */
179		214
180	#define VAR(name,type) type name;	215	#define VAR(name,type) type name;
181	# include "state.h"	216	# include "state.h"
182	#undef VAR	217	#undef VAR
183		218
		219	/* statistics */
		220	int usecount; /* number of transfers to this coro */
		221
184	/* coro process data */	222	/* coro process data */
185	int prio;	223	int prio;
		224	//SV *throw;
		225
		226	/* async_pool */
		227	SV *saved_deffh;
		228
		229	/* linked list */
		230	struct coro next, prev;
		231	HV hv; / the perl hash associated with this coro, if any */
186	};	232	};
187		233
188	typedef struct coro *Coro__State;	234	typedef struct coro *Coro__State;
189	typedef struct coro *Coro__State_or_hashref;	235	typedef struct coro *Coro__State_or_hashref;
190		236
…		…
199		245
200	/* for Coro.pm */	246	/* for Coro.pm */
201	static SV *coro_current;	247	static SV *coro_current;
202	static AV *coro_ready [PRIO_MAX-PRIO_MIN+1];	248	static AV *coro_ready [PRIO_MAX-PRIO_MIN+1];
203	static int coro_nready;	249	static int coro_nready;
		250	static struct coro *coro_first;
204		251
205	/ lowlevel stuff ********************************************************/	252	/ lowlevel stuff ********************************************************/
206		253
207	static AV *	254	static AV *
208	coro_clone_padlist (CV *cv)	255	coro_clone_padlist (pTHX_ CV *cv)
209	{	256	{
210	AV *padlist = CvPADLIST (cv);	257	AV *padlist = CvPADLIST (cv);
211	AV newpadlist, newpad;	258	AV newpadlist, newpad;
212		259
213	newpadlist = newAV ();	260	newpadlist = newAV ();
…		…
225		272
226	return newpadlist;	273	return newpadlist;
227	}	274	}
228		275
229	static void	276	static void
230	free_padlist (AV *padlist)	277	free_padlist (pTHX_ AV *padlist)
231	{	278	{
232	/* may be during global destruction */	279	/* may be during global destruction */
233	if (SvREFCNT (padlist))	280	if (SvREFCNT (padlist))
234	{	281	{
235	I32 i = AvFILLp (padlist);	282	I32 i = AvFILLp (padlist);
…		…
256	AV *padlist;	303	AV *padlist;
257	AV av = (AV )mg->mg_obj;	304	AV av = (AV )mg->mg_obj;
258		305
259	/* casting is fun. */	306	/* casting is fun. */
260	while (&PL_sv_undef != (SV )(padlist = (AV )av_pop (av)))	307	while (&PL_sv_undef != (SV )(padlist = (AV )av_pop (av)))
261	free_padlist (padlist);	308	free_padlist (aTHX_ padlist);
262		309
263	SvREFCNT_dec (av);	310	SvREFCNT_dec (av);
264		311
265	return 0;	312	return 0;
266	}	313	}
…		…
274	? SvMAGIC (cv)->mg_type == PERL_MAGIC_coro \	321	? SvMAGIC (cv)->mg_type == PERL_MAGIC_coro \
275	? SvMAGIC (cv) \	322	? SvMAGIC (cv) \
276	: mg_find ((SV *)cv, PERL_MAGIC_coro) \	323	: mg_find ((SV *)cv, PERL_MAGIC_coro) \
277	: 0	324	: 0
278		325
		326	static struct coro *
		327	SvSTATE_ (pTHX_ SV *coro)
		328	{
		329	HV *stash;
		330	MAGIC *mg;
		331
		332	if (SvROK (coro))
		333	coro = SvRV (coro);
		334
		335	if (expect_false (SvTYPE (coro) != SVt_PVHV))
		336	croak ("Coro::State object required");
		337
		338	stash = SvSTASH (coro);
		339	if (expect_false (stash != coro_stash && stash != coro_state_stash))
		340	{
		341	/* very slow, but rare, check */
		342	if (!sv_derived_from (sv_2mortal (newRV_inc (coro)), "Coro::State"))
		343	croak ("Coro::State object required");
		344	}
		345
		346	mg = CORO_MAGIC (coro);
		347	return (struct coro *)mg->mg_ptr;
		348	}
		349
		350	#define SvSTATE(sv) SvSTATE_ (aTHX_ (sv))
		351
279	/* the next two functions merely cache the padlists */	352	/* the next two functions merely cache the padlists */
280	static void	353	static void
281	get_padlist (CV *cv)	354	get_padlist (pTHX_ CV *cv)
282	{	355	{
283	MAGIC *mg = CORO_MAGIC (cv);	356	MAGIC *mg = CORO_MAGIC (cv);
284	AV *av;	357	AV *av;
285		358
286	if (mg && AvFILLp ((av = (AV *)mg->mg_obj)) >= 0)	359	if (expect_true (mg && AvFILLp ((av = (AV *)mg->mg_obj)) >= 0))
287	CvPADLIST (cv) = (AV *)AvARRAY (av)[AvFILLp (av)--];	360	CvPADLIST (cv) = (AV *)AvARRAY (av)[AvFILLp (av)--];
288	else	361	else
289	{	362	{
290	#if PREFER_PERL_FUNCTIONS	363	#if CORO_PREFER_PERL_FUNCTIONS
291	/* this is probably cleaner, but also slower? */	364	/* this is probably cleaner, but also slower? */
292	CV *cp = Perl_cv_clone (cv);	365	CV *cp = Perl_cv_clone (cv);
293	CvPADLIST (cv) = CvPADLIST (cp);	366	CvPADLIST (cv) = CvPADLIST (cp);
294	CvPADLIST (cp) = 0;	367	CvPADLIST (cp) = 0;
295	SvREFCNT_dec (cp);	368	SvREFCNT_dec (cp);
296	#else	369	#else
297	CvPADLIST (cv) = coro_clone_padlist (cv);	370	CvPADLIST (cv) = coro_clone_padlist (aTHX_ cv);
298	#endif	371	#endif
299	}	372	}
300	}	373	}
301		374
302	static void	375	static void
303	put_padlist (CV *cv)	376	put_padlist (pTHX_ CV *cv)
304	{	377	{
305	MAGIC *mg = CORO_MAGIC (cv);	378	MAGIC *mg = CORO_MAGIC (cv);
306	AV *av;	379	AV *av;
307		380
308	if (!mg)	381	if (expect_false (!mg))
309	{	382	{
310	sv_magic ((SV *)cv, 0, PERL_MAGIC_coro, 0, 0);	383	sv_magic ((SV *)cv, 0, PERL_MAGIC_coro, 0, 0);
311	mg = mg_find ((SV *)cv, PERL_MAGIC_coro);	384	mg = mg_find ((SV *)cv, PERL_MAGIC_coro);
312	mg->mg_virtual = &vtbl_coro;	385	mg->mg_virtual = &vtbl_coro;
313	mg->mg_obj = (SV *)newAV ();	386	mg->mg_obj = (SV *)newAV ();
314	}	387	}
315		388
316	av = (AV *)mg->mg_obj;	389	av = (AV *)mg->mg_obj;
317		390
318	if (AvFILLp (av) >= AvMAX (av))	391	if (expect_false (AvFILLp (av) >= AvMAX (av)))
319	av_extend (av, AvMAX (av) + 1);	392	av_extend (av, AvMAX (av) + 1);
320		393
321	AvARRAY (av)[++AvFILLp (av)] = (SV *)CvPADLIST (cv);	394	AvARRAY (av)[++AvFILLp (av)] = (SV *)CvPADLIST (cv);
322	}	395	}
323		396
324	/ load & save, init *****************************************************/	397	/ load & save, init *****************************************************/
325		398
326	#define SB do {
327	#define SE } while (0)
328
329	#define REPLACE_SV(sv,val) SB SvREFCNT_dec (sv); (sv) = (val); (val) = 0; SE
330
331	static void	399	static void
332	load_perl (Coro__State c)	400	load_perl (pTHX_ Coro__State c)
333	{	401	{
334	#define VAR(name,type) PL_ ## name = c->name;	402	#define VAR(name,type) PL_ ## name = c->name;
335	# include "state.h"	403	# include "state.h"
336	#undef VAR	404	#undef VAR
337		405
338	if (c->defav) REPLACE_SV (GvAV (PL_defgv), c->defav);	406	GvSV (PL_defgv) = c->defsv;
339	if (c->defsv) REPLACE_SV (DEFSV , c->defsv);	407	GvAV (PL_defgv) = c->defav;
340	if (c->errsv) REPLACE_SV (ERRSV , c->errsv);	408	GvSV (PL_errgv) = c->errsv;
341	if (c->irssv)	409	GvSV (irsgv) = c->irssv_sv;
342	{
343	if (c->irssv == PL_rs \|\| sv_eq (PL_rs, c->irssv))
344	SvREFCNT_dec (c->irssv);
345	else
346	{
347	REPLACE_SV (PL_rs, c->irssv);
348	if (!c->irssv_sv) c->irssv_sv = get_sv ("/", 0);
349	sv_setsv (c->irssv_sv, PL_rs);
350	}
351	}
352		410
353	{	411	{
354	dSP;	412	dSP;
355	CV *cv;	413	CV *cv;
356		414
357	/* now do the ugly restore mess */	415	/* now do the ugly restore mess */
358	while ((cv = (CV *)POPs))	416	while (expect_true (cv = (CV *)POPs))
359	{	417	{
360	put_padlist (cv); /* mark this padlist as available */	418	put_padlist (aTHX_ cv); /* mark this padlist as available */
361	CvDEPTH (cv) = PTR2IV (POPs);	419	CvDEPTH (cv) = PTR2IV (POPs);
362	CvPADLIST (cv) = (AV *)POPs;	420	CvPADLIST (cv) = (AV *)POPs;
363	}	421	}
364		422
365	PUTBACK;	423	PUTBACK;
366	}	424	}
367	}	425	}
368		426
369	static void	427	static void
370	save_perl (Coro__State c)	428	save_perl (pTHX_ Coro__State c)
371	{	429	{
372	{	430	{
373	dSP;	431	dSP;
374	I32 cxix = cxstack_ix;	432	I32 cxix = cxstack_ix;
375	PERL_CONTEXT *ccstk = cxstack;	433	PERL_CONTEXT *ccstk = cxstack;
…		…
378	/*	436	/*
379	* the worst thing you can imagine happens first - we have to save	437	* the worst thing you can imagine happens first - we have to save
380	* (and reinitialize) all cv's in the whole callchain :(	438	* (and reinitialize) all cv's in the whole callchain :(
381	*/	439	*/
382		440
383	EXTEND (SP, 3 + 1);
384	PUSHs (Nullsv);	441	XPUSHs (Nullsv);
385	/* this loop was inspired by pp_caller */	442	/* this loop was inspired by pp_caller */
386	for (;;)	443	for (;;)
387	{	444	{
388	while (cxix >= 0)	445	while (expect_true (cxix >= 0))
389	{	446	{
390	PERL_CONTEXT *cx = &ccstk[cxix--];	447	PERL_CONTEXT *cx = &ccstk[cxix--];
391		448
392	if (CxTYPE (cx) == CXt_SUB)	449	if (expect_true (CxTYPE (cx) == CXt_SUB \|\| CxTYPE (cx) == CXt_FORMAT))
393	{	450	{
394	CV *cv = cx->blk_sub.cv;	451	CV *cv = cx->blk_sub.cv;
395		452
396	if (CvDEPTH (cv))	453	if (expect_true (CvDEPTH (cv)))
397	{	454	{
398	EXTEND (SP, 3);	455	EXTEND (SP, 3);
399	PUSHs ((SV *)CvPADLIST (cv));	456	PUSHs ((SV *)CvPADLIST (cv));
400	PUSHs (INT2PTR (SV *, CvDEPTH (cv)));	457	PUSHs (INT2PTR (SV *, CvDEPTH (cv)));
401	PUSHs ((SV *)cv);	458	PUSHs ((SV *)cv);
402		459
403	CvDEPTH (cv) = 0;	460	CvDEPTH (cv) = 0;
404	get_padlist (cv);	461	get_padlist (aTHX_ cv);
405	}	462	}
406	}	463	}
407	}	464	}
408		465
409	if (top_si->si_type == PERLSI_MAIN)	466	if (expect_true (top_si->si_type == PERLSI_MAIN))
410	break;	467	break;
411		468
412	top_si = top_si->si_prev;	469	top_si = top_si->si_prev;
413	ccstk = top_si->si_cxstack;	470	ccstk = top_si->si_cxstack;
414	cxix = top_si->si_cxix;	471	cxix = top_si->si_cxix;
415	}	472	}
416		473
417	PUTBACK;	474	PUTBACK;
418	}	475	}
419		476
420	c->defav = c->save & CORO_SAVE_DEFAV ? (AV *)SvREFCNT_inc (GvAV (PL_defgv)) : 0;	477	c->defav = GvAV (PL_defgv);
421	c->defsv = c->save & CORO_SAVE_DEFSV ? SvREFCNT_inc (DEFSV) : 0;	478	c->defsv = DEFSV;
422	c->errsv = c->save & CORO_SAVE_ERRSV ? SvREFCNT_inc (ERRSV) : 0;	479	c->errsv = ERRSV;
423	c->irssv = c->save & CORO_SAVE_IRSSV ? SvREFCNT_inc (PL_rs) : 0;	480	c->irssv_sv = GvSV (irsgv);
424		481
425	#define VAR(name,type)c->name = PL_ ## name;	482	#define VAR(name,type)c->name = PL_ ## name;
426	# include "state.h"	483	# include "state.h"
427	#undef VAR	484	#undef VAR
428	}	485	}
…		…
431	* allocate various perl stacks. This is an exact copy	488	* allocate various perl stacks. This is an exact copy
432	* of perl.c:init_stacks, except that it uses less memory	489	* of perl.c:init_stacks, except that it uses less memory
433	* on the (sometimes correct) assumption that coroutines do	490	* on the (sometimes correct) assumption that coroutines do
434	* not usually need a lot of stackspace.	491	* not usually need a lot of stackspace.
435	*/	492	*/
436	#if PREFER_PERL_FUNCTIONS	493	#if CORO_PREFER_PERL_FUNCTIONS
437	# define coro_init_stacks init_stacks	494	# define coro_init_stacks init_stacks
438	#else	495	#else
439	static void	496	static void
440	coro_init_stacks ()	497	coro_init_stacks (pTHX)
441	{	498	{
442	PL_curstackinfo = new_stackinfo(128, 1024/sizeof(PERL_CONTEXT));	499	PL_curstackinfo = new_stackinfo(64, 6);
443	PL_curstackinfo->si_type = PERLSI_MAIN;	500	PL_curstackinfo->si_type = PERLSI_MAIN;
444	PL_curstack = PL_curstackinfo->si_stack;	501	PL_curstack = PL_curstackinfo->si_stack;
445	PL_mainstack = PL_curstack; /* remember in case we switch stacks */	502	PL_mainstack = PL_curstack; /* remember in case we switch stacks */
446		503
447	PL_stack_base = AvARRAY(PL_curstack);	504	PL_stack_base = AvARRAY(PL_curstack);
448	PL_stack_sp = PL_stack_base;	505	PL_stack_sp = PL_stack_base;
449	PL_stack_max = PL_stack_base + AvMAX(PL_curstack);	506	PL_stack_max = PL_stack_base + AvMAX(PL_curstack);
450		507
451	New(50,PL_tmps_stack,128,SV*);	508	New(50,PL_tmps_stack,64,SV*);
452	PL_tmps_floor = -1;	509	PL_tmps_floor = -1;
453	PL_tmps_ix = -1;	510	PL_tmps_ix = -1;
454	PL_tmps_max = 128;	511	PL_tmps_max = 64;
455		512
456	New(54,PL_markstack,32,I32);	513	New(54,PL_markstack,16,I32);
457	PL_markstack_ptr = PL_markstack;	514	PL_markstack_ptr = PL_markstack;
458	PL_markstack_max = PL_markstack + 32;	515	PL_markstack_max = PL_markstack + 16;
459		516
460	#ifdef SET_MARK_OFFSET	517	#ifdef SET_MARK_OFFSET
461	SET_MARK_OFFSET;	518	SET_MARK_OFFSET;
462	#endif	519	#endif
463		520
464	New(54,PL_scopestack,32,I32);	521	New(54,PL_scopestack,16,I32);
465	PL_scopestack_ix = 0;	522	PL_scopestack_ix = 0;
466	PL_scopestack_max = 32;	523	PL_scopestack_max = 16;
467		524
468	New(54,PL_savestack,64,ANY);	525	New(54,PL_savestack,64,ANY);
469	PL_savestack_ix = 0;	526	PL_savestack_ix = 0;
470	PL_savestack_max = 64;	527	PL_savestack_max = 64;
471		528
472	#if !PERL_VERSION_ATLEAST (5,9,0)	529	#if !PERL_VERSION_ATLEAST (5,9,0)
473	New(54,PL_retstack,16,OP*);	530	New(54,PL_retstack,4,OP*);
474	PL_retstack_ix = 0;	531	PL_retstack_ix = 0;
475	PL_retstack_max = 16;	532	PL_retstack_max = 4;
476	#endif	533	#endif
477	}	534	}
478	#endif	535	#endif
479		536
480	/*	537	/*
481	* destroy the stacks, the callchain etc...	538	* destroy the stacks, the callchain etc...
482	*/	539	*/
483	static void	540	static void
484	coro_destroy_stacks ()	541	coro_destroy_stacks (pTHX)
485	{	542	{
486	if (!IN_DESTRUCT)
487	{
488	/* restore all saved variables and stuff */
489	LEAVE_SCOPE (0);
490	assert (PL_tmps_floor == -1);
491
492	/* free all temporaries */
493	FREETMPS;
494	assert (PL_tmps_ix == -1);
495
496	/* unwind all extra stacks */
497	POPSTACK_TO (PL_mainstack);
498
499	/* unwind main stack */
500	dounwind (-1);
501	}
502
503	while (PL_curstackinfo->si_next)	543	while (PL_curstackinfo->si_next)
504	PL_curstackinfo = PL_curstackinfo->si_next;	544	PL_curstackinfo = PL_curstackinfo->si_next;
505		545
506	while (PL_curstackinfo)	546	while (PL_curstackinfo)
507	{	547	{
…		…
522	#if !PERL_VERSION_ATLEAST (5,9,0)	562	#if !PERL_VERSION_ATLEAST (5,9,0)
523	Safefree (PL_retstack);	563	Safefree (PL_retstack);
524	#endif	564	#endif
525	}	565	}
526		566
		567	static size_t
		568	coro_rss (pTHX_ struct coro *coro)
		569	{
		570	size_t rss = sizeof (*coro);
		571
		572	if (coro->mainstack)
		573	{
		574	if (coro->flags & CF_RUNNING)
		575	{
		576	#define VAR(name,type)coro->name = PL_ ## name;
		577	# include "state.h"
		578	#undef VAR
		579	}
		580
		581	rss += sizeof (coro->curstackinfo);
		582	rss += sizeof (SV) + sizeof (struct xpvav) + (1 + AvFILL (coro->curstackinfo->si_stack)) * sizeof (SV *);
		583	rss += (coro->curstackinfo->si_cxmax + 1) * sizeof (PERL_CONTEXT);
		584	rss += sizeof (SV) + sizeof (struct xpvav) + (1 + AvFILL (coro->curstack)) * sizeof (SV *);
		585	rss += coro->tmps_max * sizeof (SV *);
		586	rss += (coro->markstack_max - coro->markstack_ptr) * sizeof (I32);
		587	rss += coro->scopestack_max * sizeof (I32);
		588	rss += coro->savestack_max * sizeof (ANY);
		589
		590	#if !PERL_VERSION_ATLEAST (5,9,0)
		591	rss += coro->retstack_max * sizeof (OP *);
		592	#endif
		593	}
		594
		595	return rss;
		596	}
		597
527	/ coroutine stack handling **********************************************/	598	/ coroutine stack handling **********************************************/
528		599
529	static void	600	static void
530	setup_coro (struct coro *coro)	601	coro_setup (pTHX_ struct coro *coro)
531	{	602	{
532	/*	603	/*
533	* emulate part of the perl startup here.	604	* emulate part of the perl startup here.
534	*/	605	*/
535
536	coro_init_stacks ();	606	coro_init_stacks (aTHX);
537		607
		608	PL_runops = RUNOPS_DEFAULT;
538	PL_curcop = &PL_compiling;	609	PL_curcop = &PL_compiling;
539	PL_in_eval = EVAL_NULL;	610	PL_in_eval = EVAL_NULL;
		611	PL_comppad = 0;
540	PL_curpm = 0;	612	PL_curpm = 0;
		613	PL_curpad = 1;
541	PL_localizing = 0;	614	PL_localizing = 0;
542	PL_dirty = 0;	615	PL_dirty = 0;
543	PL_restartop = 0;	616	PL_restartop = 0;
		617
		618	GvSV (PL_defgv) = newSV (0);
		619	GvAV (PL_defgv) = coro->args; coro->args = 0;
		620	GvSV (PL_errgv) = newSV (0);
		621	GvSV (irsgv) = newSVpvn ("\n", 1); sv_magic (GvSV (irsgv), (SV *)irsgv, PERL_MAGIC_sv, "/", 0);
		622	PL_rs = newSVsv (GvSV (irsgv));
		623	PL_defoutgv = SvREFCNT_inc (stdoutgv);
544		624
545	{	625	{
546	dSP;	626	dSP;
547	LOGOP myop;	627	LOGOP myop;
548		628
549	SvREFCNT_dec (GvAV (PL_defgv));
550	GvAV (PL_defgv) = coro->args; coro->args = 0;
551
552	Zero (&myop, 1, LOGOP);	629	Zero (&myop, 1, LOGOP);
553	myop.op_next = Nullop;	630	myop.op_next = Nullop;
554	myop.op_flags = OPf_WANT_VOID;	631	myop.op_flags = OPf_WANT_VOID;
555		632
556	PUSHMARK (SP);	633	PUSHMARK (SP);
557	XPUSHs ((SV *)get_cv ("Coro::State::_coro_init", FALSE));	634	XPUSHs (sv_2mortal (av_shift (GvAV (PL_defgv))));
558	PUTBACK;	635	PUTBACK;
559	PL_op = (OP *)&myop;	636	PL_op = (OP *)&myop;
560	PL_op = PL_ppaddr[OP_ENTERSUB](aTHX);	637	PL_op = PL_ppaddr[OP_ENTERSUB](aTHX);
561	SPAGAIN;	638	SPAGAIN;
562	}	639	}
563		640
564	ENTER; /* necessary e.g. for dounwind */	641	ENTER; /* necessary e.g. for dounwind and to balance the xsub-entersub */
565	}	642	}
566		643
567	static void	644	static void
		645	coro_destroy (pTHX_ struct coro *coro)
		646	{
		647	if (!IN_DESTRUCT)
		648	{
		649	/* restore all saved variables and stuff */
		650	LEAVE_SCOPE (0);
		651	assert (PL_tmps_floor == -1);
		652
		653	/* free all temporaries */
		654	FREETMPS;
		655	assert (PL_tmps_ix == -1);
		656
		657	/* unwind all extra stacks */
		658	POPSTACK_TO (PL_mainstack);
		659
		660	/* unwind main stack */
		661	dounwind (-1);
		662	}
		663
		664	SvREFCNT_dec (GvSV (PL_defgv));
		665	SvREFCNT_dec (GvAV (PL_defgv));
		666	SvREFCNT_dec (GvSV (PL_errgv));
		667	SvREFCNT_dec (PL_defoutgv);
		668	SvREFCNT_dec (PL_rs);
		669	SvREFCNT_dec (GvSV (irsgv));
		670
		671	SvREFCNT_dec (coro->saved_deffh);
		672	//SvREFCNT_dec (coro->throw);
		673
		674	coro_destroy_stacks (aTHX);
		675	}
		676
		677	static void
568	free_coro_mortal ()	678	free_coro_mortal (pTHX)
569	{	679	{
570	if (coro_mortal)	680	if (expect_true (coro_mortal))
571	{	681	{
572	SvREFCNT_dec (coro_mortal);	682	SvREFCNT_dec (coro_mortal);
573	coro_mortal = 0;	683	coro_mortal = 0;
574	}	684	}
575	}	685	}
576		686
		687	static int
		688	runops_trace (pTHX)
		689	{
		690	COP *oldcop = 0;
		691	int oldcxix = -2;
		692	struct coro coro = SvSTATE (coro_current); / trace cctx is tied to specific coro */
		693	coro_cctx *cctx = coro->cctx;
		694
		695	while ((PL_op = CALL_FPTR (PL_op->op_ppaddr) (aTHX)))
		696	{
		697	PERL_ASYNC_CHECK ();
		698
		699	if (cctx->flags & CC_TRACE_ALL)
		700	{
		701	if (PL_op->op_type == OP_LEAVESUB && cctx->flags & CC_TRACE_SUB)
		702	{
		703	PERL_CONTEXT *cx = &cxstack[cxstack_ix];
		704	SV bot, top;
		705	AV av = newAV (); / return values */
		706	SV **cb;
		707	dSP;
		708
		709	GV *gv = CvGV (cx->blk_sub.cv);
		710	SV *fullname = sv_2mortal (newSV (0));
		711	if (isGV (gv))
		712	gv_efullname3 (fullname, gv, 0);
		713
		714	bot = PL_stack_base + cx->blk_oldsp + 1;
		715	top = cx->blk_gimme == G_ARRAY ? SP + 1
		716	: cx->blk_gimme == G_SCALAR ? bot + 1
		717	: bot;
		718
		719	av_extend (av, top - bot);
		720	while (bot < top)
		721	av_push (av, SvREFCNT_inc (*bot++));
		722
		723	PL_runops = RUNOPS_DEFAULT;
		724	ENTER;
		725	SAVETMPS;
		726	EXTEND (SP, 3);
		727	PUSHMARK (SP);
		728	PUSHs (&PL_sv_no);
		729	PUSHs (fullname);
		730	PUSHs (sv_2mortal (newRV_noinc ((SV *)av)));
		731	PUTBACK;
		732	cb = hv_fetch ((HV *)SvRV (coro_current), "_trace_sub_cb", sizeof ("_trace_sub_cb") - 1, 0);
		733	if (cb) call_sv (*cb, G_KEEPERR \| G_EVAL \| G_VOID \| G_DISCARD);
		734	SPAGAIN;
		735	FREETMPS;
		736	LEAVE;
		737	PL_runops = runops_trace;
		738	}
		739
		740	if (oldcop != PL_curcop)
		741	{
		742	oldcop = PL_curcop;
		743
		744	if (PL_curcop != &PL_compiling)
		745	{
		746	SV **cb;
		747
		748	if (oldcxix != cxstack_ix && cctx->flags & CC_TRACE_SUB)
		749	{
		750	PERL_CONTEXT *cx = &cxstack[cxstack_ix];
		751
		752	if (CxTYPE (cx) == CXt_SUB && oldcxix < cxstack_ix)
		753	{
		754	runops_proc_t old_runops = PL_runops;
		755	dSP;
		756	GV *gv = CvGV (cx->blk_sub.cv);
		757	SV *fullname = sv_2mortal (newSV (0));
		758
		759	if (isGV (gv))
		760	gv_efullname3 (fullname, gv, 0);
		761
		762	PL_runops = RUNOPS_DEFAULT;
		763	ENTER;
		764	SAVETMPS;
		765	EXTEND (SP, 3);
		766	PUSHMARK (SP);
		767	PUSHs (&PL_sv_yes);
		768	PUSHs (fullname);
		769	PUSHs (cx->blk_sub.hasargs ? sv_2mortal (newRV_inc ((SV *)cx->blk_sub.argarray)) : &PL_sv_undef);
		770	PUTBACK;
		771	cb = hv_fetch ((HV *)SvRV (coro_current), "_trace_sub_cb", sizeof ("_trace_sub_cb") - 1, 0);
		772	if (cb) call_sv (*cb, G_KEEPERR \| G_EVAL \| G_VOID \| G_DISCARD);
		773	SPAGAIN;
		774	FREETMPS;
		775	LEAVE;
		776	PL_runops = runops_trace;
		777	}
		778
		779	oldcxix = cxstack_ix;
		780	}
		781
		782	if (cctx->flags & CC_TRACE_LINE)
		783	{
		784	dSP;
		785
		786	PL_runops = RUNOPS_DEFAULT;
		787	ENTER;
		788	SAVETMPS;
		789	EXTEND (SP, 3);
		790	PL_runops = RUNOPS_DEFAULT;
		791	PUSHMARK (SP);
		792	PUSHs (sv_2mortal (newSVpv (OutCopFILE (oldcop), 0)));
		793	PUSHs (sv_2mortal (newSViv (CopLINE (oldcop))));
		794	PUTBACK;
		795	cb = hv_fetch ((HV *)SvRV (coro_current), "_trace_line_cb", sizeof ("_trace_line_cb") - 1, 0);
		796	if (cb) call_sv (*cb, G_KEEPERR \| G_EVAL \| G_VOID \| G_DISCARD);
		797	SPAGAIN;
		798	FREETMPS;
		799	LEAVE;
		800	PL_runops = runops_trace;
		801	}
		802	}
		803	}
		804	}
		805	}
		806
		807	TAINT_NOT;
		808	return 0;
		809	}
		810
577	/* inject a fake call to Coro::State::_cctx_init into the execution */	811	/* inject a fake call to Coro::State::_cctx_init into the execution */
		812	/* _cctx_init should be careful, as it could be called at almost any time */
		813	/* during execution of a perl program */
578	static void NOINLINE	814	static void NOINLINE
579	prepare_cctx (coro_cctx *cctx)	815	prepare_cctx (pTHX_ coro_cctx *cctx)
580	{	816	{
581	dSP;	817	dSP;
582	LOGOP myop;	818	LOGOP myop;
		819
		820	PL_top_env = &PL_start_env;
		821
		822	if (cctx->flags & CC_TRACE)
		823	PL_runops = runops_trace;
583		824
584	Zero (&myop, 1, LOGOP);	825	Zero (&myop, 1, LOGOP);
585	myop.op_next = PL_op;	826	myop.op_next = PL_op;
586	myop.op_flags = OPf_WANT_VOID \| OPf_STACKED;	827	myop.op_flags = OPf_WANT_VOID \| OPf_STACKED;
587		828
…		…
593	PL_op = (OP *)&myop;	834	PL_op = (OP *)&myop;
594	PL_op = PL_ppaddr[OP_ENTERSUB](aTHX);	835	PL_op = PL_ppaddr[OP_ENTERSUB](aTHX);
595	SPAGAIN;	836	SPAGAIN;
596	}	837	}
597		838
		839	/*
		840	* this is a _very_ stripped down perl interpreter ;)
		841	*/
598	static void	842	static void
599	coro_run (void *arg)	843	coro_run (void *arg)
600	{	844	{
		845	dTHX;
		846
601	/* coro_run is the alternative tail of transfer(), so unlock here. */	847	/* coro_run is the alternative tail of transfer(), so unlock here. */
602	UNLOCK;	848	UNLOCK;
603		849
604	/*	850	/* we now skip the entersub that lead to transfer() */
605	* this is a _very_ stripped down perl interpreter ;)	851	PL_op = PL_op->op_next;
606	*/
607	PL_top_env = &PL_start_env;
608		852
609	/* inject call to cctx_init */	853	/* inject a fake subroutine call to cctx_init */
610	prepare_cctx ((coro_cctx *)arg);	854	prepare_cctx (aTHX_ (coro_cctx *)arg);
611		855
612	/* somebody will hit me for both perl_run and PL_restartop */	856	/* somebody or something will hit me for both perl_run and PL_restartop */
613	PL_restartop = PL_op;	857	PL_restartop = PL_op;
614	perl_run (PL_curinterp);	858	perl_run (PL_curinterp);
615		859
616	fputs ("FATAL: C coroutine fell over the edge of the world, aborting. Did you call exit in a coroutine?\n", stderr);	860	/*
617	abort ();	861	* If perl-run returns we assume exit() was being called or the coro
		862	* fell off the end, which seems to be the only valid (non-bug)
		863	* reason for perl_run to return. We try to exit by jumping to the
		864	* bootstrap-time "top" top_env, as we cannot restore the "main"
		865	* coroutine as Coro has no such concept
		866	*/
		867	PL_top_env = main_top_env;
		868	JMPENV_JUMP (2); /* I do not feel well about the hardcoded 2 at all */
618	}	869	}
619		870
620	static coro_cctx *	871	static coro_cctx *
621	cctx_new ()	872	cctx_new ()
622	{	873	{
623	coro_cctx *cctx;	874	coro_cctx *cctx;
		875	void *stack_start;
		876	size_t stack_size;
624		877
625	++cctx_count;	878	++cctx_count;
626		879
627	Newz (0, cctx, 1, coro_cctx);	880	Newz (0, cctx, 1, coro_cctx);
628		881
629	#if HAVE_MMAP	882	#if HAVE_MMAP
630		883
631	cctx->ssize = ((STACKSIZE * sizeof (long) + PAGESIZE - 1) / PAGESIZE + STACKGUARD) * PAGESIZE;	884	cctx->ssize = ((coro_stacksize * sizeof (long) + PAGESIZE - 1) / PAGESIZE + CORO_STACKGUARD) * PAGESIZE;
632	/* mmap supposedly does allocate-on-write for us */	885	/* mmap supposedly does allocate-on-write for us */
633	cctx->sptr = mmap (0, cctx->ssize, PROT_EXEC\|PROT_READ\|PROT_WRITE, MAP_PRIVATE\|MAP_ANONYMOUS, 0, 0);	886	cctx->sptr = mmap (0, cctx->ssize, PROT_EXEC\|PROT_READ\|PROT_WRITE, MAP_PRIVATE\|MAP_ANONYMOUS, 0, 0);
634		887
635	if (cctx->sptr == (void *)-1)	888	if (cctx->sptr != (void *)-1)
636	{
637	perror ("FATAL: unable to mmap stack for coroutine");
638	_exit (EXIT_FAILURE);
639	}	889	{
640
641	# if STACKGUARD	890	# if CORO_STACKGUARD
642	mprotect (cctx->sptr, STACKGUARD * PAGESIZE, PROT_NONE);	891	mprotect (cctx->sptr, CORO_STACKGUARD * PAGESIZE, PROT_NONE);
643	# endif	892	# endif
		893	stack_start = CORO_STACKGUARD * PAGESIZE + (char *)cctx->sptr;
		894	stack_size = cctx->ssize - CORO_STACKGUARD * PAGESIZE;
		895	cctx->flags \|= CC_MAPPED;
		896	}
		897	else
		898	#endif
		899	{
		900	cctx->ssize = coro_stacksize * (long)sizeof (long);
		901	New (0, cctx->sptr, coro_stacksize, long);
644		902
645	#else
646
647	cctx->ssize = STACKSIZE * (long)sizeof (long);
648	New (0, cctx->sptr, STACKSIZE, long);
649
650	if (!cctx->sptr)	903	if (!cctx->sptr)
651	{	904	{
652	perror ("FATAL: unable to malloc stack for coroutine");	905	perror ("FATAL: unable to allocate stack for coroutine");
653	_exit (EXIT_FAILURE);	906	_exit (EXIT_FAILURE);
654	}	907	}
655		908
656	#endif	909	stack_start = cctx->sptr;
		910	stack_size = cctx->ssize;
		911	}
657		912
658	#if USE_VALGRIND	913	REGISTER_STACK (cctx, (char )stack_start, (char )stack_start + stack_size);
659	cctx->valgrind_id = VALGRIND_STACK_REGISTER (
660	STACKGUARD * PAGESIZE + (char *)cctx->sptr,
661	cctx->ssize + (char *)cctx->sptr
662	);
663	#endif
664
665	coro_create (&cctx->cctx, coro_run, (void *)cctx, cctx->sptr, cctx->ssize);	914	coro_create (&cctx->cctx, coro_run, (void *)cctx, stack_start, stack_size);
666		915
667	return cctx;	916	return cctx;
668	}	917	}
669		918
670	static void	919	static void
…		…
673	if (!cctx)	922	if (!cctx)
674	return;	923	return;
675		924
676	--cctx_count;	925	--cctx_count;
677		926
678	#if USE_VALGRIND	927	#if CORO_USE_VALGRIND
679	VALGRIND_STACK_DEREGISTER (cctx->valgrind_id);	928	VALGRIND_STACK_DEREGISTER (cctx->valgrind_id);
680	#endif	929	#endif
681		930
682	#if HAVE_MMAP	931	#if HAVE_MMAP
		932	if (cctx->flags & CC_MAPPED)
683	munmap (cctx->sptr, cctx->ssize);	933	munmap (cctx->sptr, cctx->ssize);
684	#else	934	else
		935	#endif
685	Safefree (cctx->sptr);	936	Safefree (cctx->sptr);
686	#endif
687		937
688	Safefree (cctx);	938	Safefree (cctx);
689	}	939	}
690		940
		941	/* wether this cctx should be destructed */
		942	#define CCTX_EXPIRED(cctx) ((cctx)->ssize < coro_stacksize \|\| ((cctx)->flags & CC_NOREUSE))
		943
691	static coro_cctx *	944	static coro_cctx *
692	cctx_get ()	945	cctx_get (pTHX)
693	{	946	{
694	coro_cctx *cctx;	947	while (expect_true (cctx_first))
695
696	if (cctx_first)
697	{	948	{
698	cctx = cctx_first;	949	coro_cctx *cctx = cctx_first;
699	cctx_first = cctx->next;	950	cctx_first = cctx->next;
700	--cctx_idle;	951	--cctx_idle;
701	}	952
702	else	953	if (expect_true (!CCTX_EXPIRED (cctx)))
703	{	954	return cctx;
704	cctx = cctx_new ();	955
705	PL_op = PL_op->op_next;	956	cctx_destroy (cctx);
706	}	957	}
707		958
708	return cctx;	959	return cctx_new ();
709	}	960	}
710		961
711	static void	962	static void
712	cctx_put (coro_cctx *cctx)	963	cctx_put (coro_cctx *cctx)
713	{	964	{
714	/* free another cctx if overlimit */	965	/* free another cctx if overlimit */
715	if (cctx_idle >= MAX_IDLE_CCTX)	966	if (expect_false (cctx_idle >= MAX_IDLE_CCTX))
716	{	967	{
717	coro_cctx *first = cctx_first;	968	coro_cctx *first = cctx_first;
718	cctx_first = first->next;	969	cctx_first = first->next;
719	--cctx_idle;	970	--cctx_idle;
720		971
721	assert (!first->inuse);
722	cctx_destroy (first);	972	cctx_destroy (first);
723	}	973	}
724		974
725	++cctx_idle;	975	++cctx_idle;
726	cctx->next = cctx_first;	976	cctx->next = cctx_first;
727	cctx_first = cctx;	977	cctx_first = cctx;
728	}	978	}
729		979
730	/ coroutine switching ***************************************************/	980	/ coroutine switching ***************************************************/
731		981
732	/* never call directly, always through the coro_state_transfer global variable */	982	static void
		983	transfer_check (pTHX_ struct coro prev, struct coro next)
		984	{
		985	if (expect_true (prev != next))
		986	{
		987	if (expect_false (!(prev->flags & (CF_RUNNING \| CF_NEW))))
		988	croak ("Coro::State::transfer called with non-running/new prev Coro::State, but can only transfer from running or new states");
		989
		990	if (expect_false (next->flags & CF_RUNNING))
		991	croak ("Coro::State::transfer called with running next Coro::State, but can only transfer to inactive states");
		992
		993	if (expect_false (next->flags & CF_DESTROYED))
		994	croak ("Coro::State::transfer called with destroyed next Coro::State, but can only transfer to inactive states");
		995
		996	if (expect_false (PL_lex_state != LEX_NOTPARSING))
		997	croak ("Coro::State::transfer called while parsing, but this is not supported");
		998	}
		999	}
		1000
		1001	/* always use the TRANSFER macro */
733	static void NOINLINE	1002	static void NOINLINE
734	transfer (struct coro prev, struct coro next)	1003	transfer (pTHX_ struct coro prev, struct coro next)
735	{	1004	{
736	dSTACKLEVEL;	1005	dSTACKLEVEL;
737		1006
738	/* sometimes transfer is only called to set idle_sp */	1007	/* sometimes transfer is only called to set idle_sp */
739	if (!next)	1008	if (expect_false (!next))
740	{	1009	{
741	((coro_cctx *)prev)->idle_sp = STACKLEVEL;	1010	((coro_cctx *)prev)->idle_sp = STACKLEVEL;
742	assert (((coro_cctx )prev)->idle_te = PL_top_env); / just for the side-effect when asserts are enabled */	1011	assert (((coro_cctx )prev)->idle_te = PL_top_env); / just for the side-effect when asserts are enabled */
743	}	1012	}
744	else if (prev != next)	1013	else if (expect_true (prev != next))
745	{	1014	{
746	coro_cctx *prev__cctx;	1015	coro_cctx *prev__cctx;
747		1016
748	if (prev->flags & CF_NEW)	1017	if (expect_false (prev->flags & CF_NEW))
749	{	1018	{
750	/* create a new empty context */	1019	/* create a new empty context */
751	Newz (0, prev->cctx, 1, coro_cctx);	1020	Newz (0, prev->cctx, 1, coro_cctx);
752	prev->cctx->inuse = 1;
753	prev->flags &= ~CF_NEW;	1021	prev->flags &= ~CF_NEW;
754	prev->flags \|= CF_RUNNING;	1022	prev->flags \|= CF_RUNNING;
755	}	1023	}
756		1024
757	/TODO: must not croak here /
758	if (!prev->flags & CF_RUNNING)
759	croak ("Coro::State::transfer called with non-running prev Coro::State, but can only transfer from running states");
760
761	if (next->flags & CF_RUNNING)
762	croak ("Coro::State::transfer called with running next Coro::State, but can only transfer to inactive states");
763
764	if (next->flags & CF_DESTROYED)
765	croak ("Coro::State::transfer called with destroyed next Coro::State, but can only transfer to inactive states");
766
767	prev->flags &= ~CF_RUNNING;	1025	prev->flags &= ~CF_RUNNING;
768	next->flags \|= CF_RUNNING;	1026	next->flags \|= CF_RUNNING;
769		1027
770	LOCK;	1028	LOCK;
771		1029
772	if (next->flags & CF_NEW)	1030	if (expect_false (next->flags & CF_NEW))
773	{	1031	{
774	/* need to start coroutine */	1032	/* need to start coroutine */
775	next->flags &= ~CF_NEW;	1033	next->flags &= ~CF_NEW;
776	/* first get rid of the old state */	1034	/* first get rid of the old state */
777	save_perl (prev);	1035	save_perl (aTHX_ prev);
778	/* setup coroutine call */	1036	/* setup coroutine call */
779	setup_coro (next);	1037	coro_setup (aTHX_ next);
780	/* need a new stack */
781	assert (!next->cctx);
782	}	1038	}
783	else	1039	else
784	{	1040	{
785	/* coroutine already started */	1041	/* coroutine already started */
786	save_perl (prev);	1042	save_perl (aTHX_ prev);
787	load_perl (next);	1043	load_perl (aTHX_ next);
788	}	1044	}
789		1045
790	prev__cctx = prev->cctx;	1046	prev__cctx = prev->cctx;
791		1047
792	/* possibly "free" the cctx */	1048	/* possibly "free" the cctx */
793	if (prev__cctx->idle_sp == STACKLEVEL)	1049	if (expect_true (prev__cctx->idle_sp == STACKLEVEL && !(prev__cctx->flags & CC_TRACE)))
794	{	1050	{
795	/* I assume that STACKLEVEL is a stronger indicator than PL_top_env changes */	1051	/* I assume that STACKLEVEL is a stronger indicator than PL_top_env changes */
796	assert (("ERROR: current top_env must equal previous top_env", PL_top_env == prev__cctx->idle_te));	1052	assert (("ERROR: current top_env must equal previous top_env", PL_top_env == prev__cctx->idle_te));
797		1053
798	prev->cctx = 0;	1054	prev->cctx = 0;
799		1055
		1056	/* if the cctx is about to be destroyed we need to make sure we won't see it in cctx_get */
		1057	/* without this the next cctx_get might destroy the prev__cctx while still in use */
		1058	if (expect_false (CCTX_EXPIRED (prev__cctx)))
		1059	next->cctx = cctx_get (aTHX);
		1060
800	cctx_put (prev__cctx);	1061	cctx_put (prev__cctx);
801	prev__cctx->inuse = 0;
802	}	1062	}
803		1063
		1064	++next->usecount;
		1065
804	if (!next->cctx)	1066	if (expect_true (!next->cctx))
805	{
806	next->cctx = cctx_get ();	1067	next->cctx = cctx_get (aTHX);
807	assert (!next->cctx->inuse);
808	next->cctx->inuse = 1;
809	}
810		1068
811	if (prev__cctx != next->cctx)	1069	if (expect_false (prev__cctx != next->cctx))
812	{	1070	{
813	prev__cctx->top_env = PL_top_env;	1071	prev__cctx->top_env = PL_top_env;
814	PL_top_env = next->cctx->top_env;	1072	PL_top_env = next->cctx->top_env;
815	coro_transfer (&prev__cctx->cctx, &next->cctx->cctx);	1073	coro_transfer (&prev__cctx->cctx, &next->cctx->cctx);
816	}	1074	}
817		1075
818	free_coro_mortal ();	1076	free_coro_mortal (aTHX);
819	UNLOCK;	1077	UNLOCK;
820	}	1078	}
821	}	1079	}
822		1080
823	struct transfer_args	1081	struct transfer_args
824	{	1082	{
825	struct coro prev, next;	1083	struct coro prev, next;
826	};	1084	};
827		1085
828	#define TRANSFER(ta) transfer ((ta).prev, (ta).next)	1086	#define TRANSFER(ta) transfer (aTHX_ (ta).prev, (ta).next)
		1087	#define TRANSFER_CHECK(ta) transfer_check (aTHX_ (ta).prev, (ta).next)
829		1088
830	/ high level stuff ******************************************************/	1089	/ high level stuff ******************************************************/
831		1090
832	static int	1091	static int
833	coro_state_destroy (struct coro *coro)	1092	coro_state_destroy (pTHX_ struct coro *coro)
834	{	1093	{
835	if (coro->flags & CF_DESTROYED)	1094	if (coro->flags & CF_DESTROYED)
836	return 0;	1095	return 0;
837		1096
838	coro->flags \|= CF_DESTROYED;	1097	coro->flags \|= CF_DESTROYED;
…		…
848	else	1107	else
849	coro->flags \|= CF_READY; /* make sure it is NOT put into the readyqueue */	1108	coro->flags \|= CF_READY; /* make sure it is NOT put into the readyqueue */
850		1109
851	if (coro->mainstack && coro->mainstack != main_mainstack)	1110	if (coro->mainstack && coro->mainstack != main_mainstack)
852	{	1111	{
853	assert (!(coro->flags & CF_RUNNING));
854
855	struct coro temp;	1112	struct coro temp;
856	Zero (&temp, 1, struct coro);
857	temp.save = CORO_SAVE_ALL;
858		1113
859	if (coro->flags & CF_RUNNING)	1114	if (coro->flags & CF_RUNNING)
860	croak ("FATAL: tried to destroy currently running coroutine");	1115	croak ("FATAL: tried to destroy currently running coroutine");
861		1116
862	save_perl (&temp);	1117	save_perl (aTHX_ &temp);
863	load_perl (coro);	1118	load_perl (aTHX_ coro);
864		1119
865	coro_destroy_stacks ();	1120	coro_destroy (aTHX_ coro);
866		1121
867	load_perl (&temp); /* this will get rid of defsv etc.. */	1122	load_perl (aTHX_ &temp); /* this will get rid of defsv etc.. */
868		1123
869	coro->mainstack = 0;	1124	coro->mainstack = 0;
870	}	1125	}
871		1126
872	cctx_destroy (coro->cctx);	1127	cctx_destroy (coro->cctx);
873	SvREFCNT_dec (coro->args);	1128	SvREFCNT_dec (coro->args);
874		1129
		1130	if (coro->next) coro->next->prev = coro->prev;
		1131	if (coro->prev) coro->prev->next = coro->next;
		1132	if (coro == coro_first) coro_first = coro->next;
		1133
875	return 1;	1134	return 1;
876	}	1135	}
877		1136
878	static int	1137	static int
879	coro_state_free (pTHX_ SV sv, MAGIC mg)	1138	coro_state_free (pTHX_ SV sv, MAGIC mg)
880	{	1139	{
881	struct coro coro = (struct coro )mg->mg_ptr;	1140	struct coro coro = (struct coro )mg->mg_ptr;
882	mg->mg_ptr = 0;	1141	mg->mg_ptr = 0;
883		1142
		1143	coro->hv = 0;
		1144
884	if (--coro->refcnt < 0)	1145	if (--coro->refcnt < 0)
885	{	1146	{
886	coro_state_destroy (coro);	1147	coro_state_destroy (aTHX_ coro);
887	Safefree (coro);	1148	Safefree (coro);
888	}	1149	}
889		1150
890	return 0;	1151	return 0;
891	}	1152	}
…		…
909	#else	1170	#else
910	# define MGf_DUP 0	1171	# define MGf_DUP 0
911	#endif	1172	#endif
912	};	1173	};
913		1174
914	static struct coro *
915	SvSTATE (SV *coro)
916	{
917	HV *stash;
918	MAGIC *mg;
919
920	if (SvROK (coro))
921	coro = SvRV (coro);
922
923	stash = SvSTASH (coro);
924	if (stash != coro_stash && stash != coro_state_stash)
925	{
926	/* very slow, but rare, check */
927	if (!sv_derived_from (sv_2mortal (newRV_inc (coro)), "Coro::State"))
928	croak ("Coro::State object required");
929	}
930
931	mg = SvMAGIC (coro);
932	assert (mg->mg_type == PERL_MAGIC_ext);
933	return (struct coro *)mg->mg_ptr;
934	}
935
936	static void	1175	static void
937	prepare_transfer (struct transfer_args ta, SV prev_sv, SV *next_sv)	1176	prepare_transfer (pTHX_ struct transfer_args ta, SV prev_sv, SV *next_sv)
938	{	1177	{
939	ta->prev = SvSTATE (prev_sv);	1178	ta->prev = SvSTATE (prev_sv);
940	ta->next = SvSTATE (next_sv);	1179	ta->next = SvSTATE (next_sv);
		1180	TRANSFER_CHECK (*ta);
941	}	1181	}
942		1182
943	static void	1183	static void
944	api_transfer (SV prev_sv, SV next_sv)	1184	api_transfer (SV prev_sv, SV next_sv)
945	{	1185	{
		1186	dTHX;
946	struct transfer_args ta;	1187	struct transfer_args ta;
947		1188
948	prepare_transfer (&ta, prev_sv, next_sv);	1189	prepare_transfer (aTHX_ &ta, prev_sv, next_sv);
949	TRANSFER (ta);	1190	TRANSFER (ta);
950	}	1191	}
951		1192
952	static int
953	api_save (SV *coro_sv, int new_save)
954	{
955	struct coro *coro = SvSTATE (coro_sv);
956	int old_save = coro->save;
957
958	if (new_save >= 0)
959	coro->save = new_save;
960
961	return old_save;
962	}
963
964	/ Coro ******************************************************************/	1193	/ Coro ******************************************************************/
965		1194
966	static void	1195	static void
967	coro_enq (SV *coro_sv)	1196	coro_enq (pTHX_ SV *coro_sv)
968	{	1197	{
969	av_push (coro_ready [SvSTATE (coro_sv)->prio - PRIO_MIN], coro_sv);	1198	av_push (coro_ready [SvSTATE (coro_sv)->prio - PRIO_MIN], coro_sv);
970	}	1199	}
971		1200
972	static SV *	1201	static SV *
973	coro_deq (int min_prio)	1202	coro_deq (pTHX_ int min_prio)
974	{	1203	{
975	int prio = PRIO_MAX - PRIO_MIN;	1204	int prio = PRIO_MAX - PRIO_MIN;
976		1205
977	min_prio -= PRIO_MIN;	1206	min_prio -= PRIO_MIN;
978	if (min_prio < 0)	1207	if (min_prio < 0)
…		…
986	}	1215	}
987		1216
988	static int	1217	static int
989	api_ready (SV *coro_sv)	1218	api_ready (SV *coro_sv)
990	{	1219	{
		1220	dTHX;
991	struct coro *coro;	1221	struct coro *coro;
992		1222
993	if (SvROK (coro_sv))	1223	if (SvROK (coro_sv))
994	coro_sv = SvRV (coro_sv);	1224	coro_sv = SvRV (coro_sv);
995		1225
…		…
999	return 0;	1229	return 0;
1000		1230
1001	coro->flags \|= CF_READY;	1231	coro->flags \|= CF_READY;
1002		1232
1003	LOCK;	1233	LOCK;
1004	coro_enq (SvREFCNT_inc (coro_sv));	1234	coro_enq (aTHX_ SvREFCNT_inc (coro_sv));
1005	++coro_nready;	1235	++coro_nready;
1006	UNLOCK;	1236	UNLOCK;
1007		1237
1008	return 1;	1238	return 1;
1009	}	1239	}
1010		1240
1011	static int	1241	static int
1012	api_is_ready (SV *coro_sv)	1242	api_is_ready (SV *coro_sv)
1013	{	1243	{
		1244	dTHX;
1014	return !!(SvSTATE (coro_sv)->flags & CF_READY);	1245	return !!(SvSTATE (coro_sv)->flags & CF_READY);
1015	}	1246	}
1016		1247
1017	static void	1248	static void
1018	prepare_schedule (struct transfer_args *ta)	1249	prepare_schedule (pTHX_ struct transfer_args *ta)
1019	{	1250	{
1020	SV prev_sv, next_sv;	1251	SV prev_sv, next_sv;
1021		1252
1022	for (;;)	1253	for (;;)
1023	{	1254	{
1024	LOCK;	1255	LOCK;
1025	next_sv = coro_deq (PRIO_MIN);	1256	next_sv = coro_deq (aTHX_ PRIO_MIN);
1026		1257
1027	/* nothing to schedule: call the idle handler */	1258	/* nothing to schedule: call the idle handler */
1028	if (!next_sv)	1259	if (expect_false (!next_sv))
1029	{	1260	{
		1261	dSP;
1030	UNLOCK;	1262	UNLOCK;
1031	dSP;
1032		1263
1033	ENTER;	1264	ENTER;
1034	SAVETMPS;	1265	SAVETMPS;
1035		1266
1036	PUSHMARK (SP);	1267	PUSHMARK (SP);
…		…
1043	}	1274	}
1044		1275
1045	ta->next = SvSTATE (next_sv);	1276	ta->next = SvSTATE (next_sv);
1046		1277
1047	/* cannot transfer to destroyed coros, skip and look for next */	1278	/* cannot transfer to destroyed coros, skip and look for next */
1048	if (ta->next->flags & CF_DESTROYED)	1279	if (expect_false (ta->next->flags & CF_DESTROYED))
1049	{	1280	{
1050	UNLOCK;	1281	UNLOCK;
1051	SvREFCNT_dec (next_sv);	1282	SvREFCNT_dec (next_sv);
1052	/* coro_nready is already taken care of by destroy */	1283	/* coro_nready is already taken care of by destroy */
1053	continue;	1284	continue;
…		…
1058	break;	1289	break;
1059	}	1290	}
1060		1291
1061	/* free this only after the transfer */	1292	/* free this only after the transfer */
1062	prev_sv = SvRV (coro_current);	1293	prev_sv = SvRV (coro_current);
1063	SvRV_set (coro_current, next_sv);
1064	ta->prev = SvSTATE (prev_sv);	1294	ta->prev = SvSTATE (prev_sv);
1065		1295	TRANSFER_CHECK (*ta);
1066	assert (ta->next->flags & CF_READY);	1296	assert (ta->next->flags & CF_READY);
1067	ta->next->flags &= ~CF_READY;	1297	ta->next->flags &= ~CF_READY;
		1298	SvRV_set (coro_current, next_sv);
1068		1299
1069	LOCK;	1300	LOCK;
1070	free_coro_mortal ();	1301	free_coro_mortal (aTHX);
1071	coro_mortal = prev_sv;	1302	coro_mortal = prev_sv;
1072	UNLOCK;	1303	UNLOCK;
1073	}	1304	}
1074		1305
1075	static void	1306	static void
1076	prepare_cede (struct transfer_args *ta)	1307	prepare_cede (pTHX_ struct transfer_args *ta)
1077	{	1308	{
1078	api_ready (coro_current);	1309	api_ready (coro_current);
1079	prepare_schedule (ta);	1310	prepare_schedule (aTHX_ ta);
1080	}	1311	}
1081		1312
1082	static int	1313	static int
1083	prepare_cede_notself (struct transfer_args *ta)	1314	prepare_cede_notself (pTHX_ struct transfer_args *ta)
1084	{	1315	{
1085	if (coro_nready)	1316	if (coro_nready)
1086	{	1317	{
1087	SV *prev = SvRV (coro_current);	1318	SV *prev = SvRV (coro_current);
1088	prepare_schedule (ta);	1319	prepare_schedule (aTHX_ ta);
1089	api_ready (prev);	1320	api_ready (prev);
1090	return 1;	1321	return 1;
1091	}	1322	}
1092	else	1323	else
1093	return 0;	1324	return 0;
1094	}	1325	}
1095		1326
1096	static void	1327	static void
1097	api_schedule (void)	1328	api_schedule (void)
1098	{	1329	{
		1330	dTHX;
1099	struct transfer_args ta;	1331	struct transfer_args ta;
1100		1332
1101	prepare_schedule (&ta);	1333	prepare_schedule (aTHX_ &ta);
1102	TRANSFER (ta);	1334	TRANSFER (ta);
1103	}	1335	}
1104		1336
1105	static int	1337	static int
1106	api_cede (void)	1338	api_cede (void)
1107	{	1339	{
		1340	dTHX;
1108	struct transfer_args ta;	1341	struct transfer_args ta;
1109		1342
1110	prepare_cede (&ta);	1343	prepare_cede (aTHX_ &ta);
1111		1344
1112	if (ta.prev != ta.next)	1345	if (expect_true (ta.prev != ta.next))
1113	{	1346	{
1114	TRANSFER (ta);	1347	TRANSFER (ta);
1115	return 1;	1348	return 1;
1116	}	1349	}
1117	else	1350	else
…		…
1119	}	1352	}
1120		1353
1121	static int	1354	static int
1122	api_cede_notself (void)	1355	api_cede_notself (void)
1123	{	1356	{
		1357	dTHX;
1124	struct transfer_args ta;	1358	struct transfer_args ta;
1125		1359
1126	if (prepare_cede_notself (&ta))	1360	if (prepare_cede_notself (aTHX_ &ta))
1127	{	1361	{
1128	TRANSFER (ta);	1362	TRANSFER (ta);
1129	return 1;	1363	return 1;
1130	}	1364	}
1131	else	1365	else
1132	return 0;	1366	return 0;
1133	}	1367	}
1134		1368
		1369	static void
		1370	api_trace (SV *coro_sv, int flags)
		1371	{
		1372	dTHX;
		1373	struct coro *coro = SvSTATE (coro_sv);
		1374
		1375	if (flags & CC_TRACE)
		1376	{
		1377	if (!coro->cctx)
		1378	coro->cctx = cctx_new ();
		1379	else if (!(coro->cctx->flags & CC_TRACE))
		1380	croak ("cannot enable tracing on coroutine with custom stack");
		1381
		1382	coro->cctx->flags \|= CC_NOREUSE \| (flags & (CC_TRACE \| CC_TRACE_ALL));
		1383	}
		1384	else if (coro->cctx && coro->cctx->flags & CC_TRACE)
		1385	{
		1386	coro->cctx->flags &= ~(CC_TRACE \| CC_TRACE_ALL);
		1387
		1388	if (coro->flags & CF_RUNNING)
		1389	PL_runops = RUNOPS_DEFAULT;
		1390	else
		1391	coro->runops = RUNOPS_DEFAULT;
		1392	}
		1393	}
		1394
1135	MODULE = Coro::State PACKAGE = Coro::State	1395	MODULE = Coro::State PACKAGE = Coro::State PREFIX = api_
1136		1396
1137	PROTOTYPES: DISABLE	1397	PROTOTYPES: DISABLE
1138		1398
1139	BOOT:	1399	BOOT:
1140	{	1400	{
1141	#ifdef USE_ITHREADS	1401	#ifdef USE_ITHREADS
1142	MUTEX_INIT (&coro_mutex);	1402	MUTEX_INIT (&coro_mutex);
1143	#endif	1403	#endif
1144	BOOT_PAGESIZE;	1404	BOOT_PAGESIZE;
1145		1405
		1406	irsgv = gv_fetchpv ("/" , GV_ADD\|GV_NOTQUAL, SVt_PV);
		1407	stdoutgv = gv_fetchpv ("STDOUT", GV_ADD\|GV_NOTQUAL, SVt_PVIO);
		1408
1146	coro_state_stash = gv_stashpv ("Coro::State", TRUE);	1409	coro_state_stash = gv_stashpv ("Coro::State", TRUE);
1147		1410
		1411	newCONSTSUB (coro_state_stash, "CC_TRACE" , newSViv (CC_TRACE));
		1412	newCONSTSUB (coro_state_stash, "CC_TRACE_SUB" , newSViv (CC_TRACE_SUB));
1148	newCONSTSUB (coro_state_stash, "SAVE_DEFAV", newSViv (CORO_SAVE_DEFAV));	1413	newCONSTSUB (coro_state_stash, "CC_TRACE_LINE", newSViv (CC_TRACE_LINE));
1149	newCONSTSUB (coro_state_stash, "SAVE_DEFSV", newSViv (CORO_SAVE_DEFSV));
1150	newCONSTSUB (coro_state_stash, "SAVE_ERRSV", newSViv (CORO_SAVE_ERRSV));
1151	newCONSTSUB (coro_state_stash, "SAVE_IRSSV", newSViv (CORO_SAVE_IRSSV));
1152	newCONSTSUB (coro_state_stash, "SAVE_ALL", newSViv (CORO_SAVE_ALL));	1414	newCONSTSUB (coro_state_stash, "CC_TRACE_ALL" , newSViv (CC_TRACE_ALL));
1153		1415
1154	main_mainstack = PL_mainstack;	1416	main_mainstack = PL_mainstack;
		1417	main_top_env = PL_top_env;
		1418
		1419	while (main_top_env->je_prev)
		1420	main_top_env = main_top_env->je_prev;
1155		1421
1156	coroapi.ver = CORO_API_VERSION;	1422	coroapi.ver = CORO_API_VERSION;
1157	coroapi.transfer = api_transfer;	1423	coroapi.transfer = api_transfer;
1158		1424
1159	assert (("PRIO_NORMAL must be 0", !PRIO_NORMAL));	1425	assert (("PRIO_NORMAL must be 0", !PRIO_NORMAL));
…		…
1166	struct coro *coro;	1432	struct coro *coro;
1167	HV *hv;	1433	HV *hv;
1168	int i;	1434	int i;
1169		1435
1170	Newz (0, coro, 1, struct coro);	1436	Newz (0, coro, 1, struct coro);
1171	coro->args = newAV ();	1437	coro->args = newAV ();
1172	coro->save = CORO_SAVE_ALL;
1173	coro->flags = CF_NEW;	1438	coro->flags = CF_NEW;
1174		1439
		1440	if (coro_first) coro_first->prev = coro;
		1441	coro->next = coro_first;
		1442	coro_first = coro;
		1443
1175	hv = newHV ();	1444	coro->hv = hv = newHV ();
1176	sv_magicext ((SV )hv, 0, PERL_MAGIC_ext, &coro_state_vtbl, (char )coro, 0)->mg_flags \|= MGf_DUP;	1445	sv_magicext ((SV )hv, 0, PERL_MAGIC_ext, &coro_state_vtbl, (char )coro, 0)->mg_flags \|= MGf_DUP;
1177	RETVAL = sv_bless (newRV_noinc ((SV *)hv), gv_stashpv (klass, 1));	1446	RETVAL = sv_bless (newRV_noinc ((SV *)hv), gv_stashpv (klass, 1));
1178		1447
		1448	av_extend (coro->args, items - 1);
1179	for (i = 1; i < items; i++)	1449	for (i = 1; i < items; i++)
1180	av_push (coro->args, newSVsv (ST (i)));	1450	av_push (coro->args, newSVsv (ST (i)));
1181	}	1451	}
1182	OUTPUT:	1452	OUTPUT:
1183	RETVAL	1453	RETVAL
1184		1454
1185	int	1455	# these not obviously related functions are all rolled into the same xs
1186	save (SV *coro, int new_save = -1)	1456	# function to increase chances that they all will call transfer with the same
1187	CODE:	1457	# stack offset
1188	RETVAL = api_save (coro, new_save);
1189	OUTPUT:
1190	RETVAL
1191
1192	void	1458	void
1193	_set_stacklevel (...)	1459	_set_stacklevel (...)
1194	ALIAS:	1460	ALIAS:
1195	Coro::State::transfer = 1	1461	Coro::State::transfer = 1
1196	Coro::schedule = 2	1462	Coro::schedule = 2
…		…
1209		1475
1210	case 1:	1476	case 1:
1211	if (items != 2)	1477	if (items != 2)
1212	croak ("Coro::State::transfer (prev,next) expects two arguments, not %d", items);	1478	croak ("Coro::State::transfer (prev,next) expects two arguments, not %d", items);
1213		1479
1214	prepare_transfer (&ta, ST (0), ST (1));	1480	prepare_transfer (aTHX_ &ta, ST (0), ST (1));
1215	break;	1481	break;
1216		1482
1217	case 2:	1483	case 2:
1218	prepare_schedule (&ta);	1484	prepare_schedule (aTHX_ &ta);
1219	break;	1485	break;
1220		1486
1221	case 3:	1487	case 3:
1222	prepare_cede (&ta);	1488	prepare_cede (aTHX_ &ta);
1223	break;	1489	break;
1224		1490
1225	case 4:	1491	case 4:
1226	if (!prepare_cede_notself (&ta))	1492	if (!prepare_cede_notself (aTHX_ &ta))
1227	XSRETURN_EMPTY;	1493	XSRETURN_EMPTY;
1228		1494
1229	break;	1495	break;
1230	}	1496	}
1231		1497
1232	BARRIER;	1498	BARRIER;
1233	TRANSFER (ta);	1499	TRANSFER (ta);
1234		1500
1235	if (GIMME_V != G_VOID && ta.next != ta.prev)	1501	if (expect_false (GIMME_V != G_VOID && ta.next != ta.prev))
1236	XSRETURN_YES;	1502	XSRETURN_YES;
1237	}	1503	}
1238		1504
1239	bool	1505	bool
1240	_destroy (SV *coro_sv)	1506	_destroy (SV *coro_sv)
1241	CODE:	1507	CODE:
1242	RETVAL = coro_state_destroy (SvSTATE (coro_sv));	1508	RETVAL = coro_state_destroy (aTHX_ SvSTATE (coro_sv));
1243	OUTPUT:	1509	OUTPUT:
1244	RETVAL	1510	RETVAL
1245		1511
1246	void	1512	void
1247	_exit (code)	1513	_exit (code)
…		…
1249	PROTOTYPE: $	1515	PROTOTYPE: $
1250	CODE:	1516	CODE:
1251	_exit (code);	1517	_exit (code);
1252		1518
1253	int	1519	int
		1520	cctx_stacksize (int new_stacksize = 0)
		1521	CODE:
		1522	RETVAL = coro_stacksize;
		1523	if (new_stacksize)
		1524	coro_stacksize = new_stacksize;
		1525	OUTPUT:
		1526	RETVAL
		1527
		1528	int
1254	cctx_count ()	1529	cctx_count ()
1255	CODE:	1530	CODE:
1256	RETVAL = cctx_count;	1531	RETVAL = cctx_count;
1257	OUTPUT:	1532	OUTPUT:
1258	RETVAL	1533	RETVAL
…		…
1262	CODE:	1537	CODE:
1263	RETVAL = cctx_idle;	1538	RETVAL = cctx_idle;
1264	OUTPUT:	1539	OUTPUT:
1265	RETVAL	1540	RETVAL
1266		1541
		1542	void
		1543	list ()
		1544	PPCODE:
		1545	{
		1546	struct coro *coro;
		1547	for (coro = coro_first; coro; coro = coro->next)
		1548	if (coro->hv)
		1549	XPUSHs (sv_2mortal (newRV_inc ((SV *)coro->hv)));
		1550	}
		1551
		1552	void
		1553	call (Coro::State coro, SV *coderef)
		1554	ALIAS:
		1555	eval = 1
		1556	CODE:
		1557	{
		1558	if (coro->mainstack)
		1559	{
		1560	struct coro temp;
		1561	Zero (&temp, 1, struct coro);
		1562
		1563	if (!(coro->flags & CF_RUNNING))
		1564	{
		1565	save_perl (aTHX_ &temp);
		1566	load_perl (aTHX_ coro);
		1567	}
		1568
		1569	{
		1570	dSP;
		1571	ENTER;
		1572	SAVETMPS;
		1573	PUSHMARK (SP);
		1574	PUTBACK;
		1575	if (ix)
		1576	eval_sv (coderef, 0);
		1577	else
		1578	call_sv (coderef, G_KEEPERR \| G_EVAL \| G_VOID \| G_DISCARD);
		1579	SPAGAIN;
		1580	FREETMPS;
		1581	LEAVE;
		1582	PUTBACK;
		1583	}
		1584
		1585	if (!(coro->flags & CF_RUNNING))
		1586	{
		1587	save_perl (aTHX_ coro);
		1588	load_perl (aTHX_ &temp);
		1589	}
		1590	}
		1591	}
		1592
		1593	SV *
		1594	is_ready (Coro::State coro)
		1595	PROTOTYPE: $
		1596	ALIAS:
		1597	is_ready = CF_READY
		1598	is_running = CF_RUNNING
		1599	is_new = CF_NEW
		1600	is_destroyed = CF_DESTROYED
		1601	CODE:
		1602	RETVAL = boolSV (coro->flags & ix);
		1603	OUTPUT:
		1604	RETVAL
		1605
		1606	void
		1607	api_trace (SV *coro, int flags = CC_TRACE \| CC_TRACE_SUB)
		1608
		1609	SV *
		1610	has_stack (Coro::State coro)
		1611	PROTOTYPE: $
		1612	CODE:
		1613	RETVAL = boolSV (!!coro->cctx);
		1614	OUTPUT:
		1615	RETVAL
		1616
		1617	int
		1618	is_traced (Coro::State coro)
		1619	PROTOTYPE: $
		1620	CODE:
		1621	RETVAL = (coro->cctx ? coro->cctx->flags : 0) & CC_TRACE_ALL;
		1622	OUTPUT:
		1623	RETVAL
		1624
		1625	IV
		1626	rss (Coro::State coro)
		1627	PROTOTYPE: $
		1628	ALIAS:
		1629	usecount = 1
		1630	CODE:
		1631	switch (ix)
		1632	{
		1633	case 0: RETVAL = coro_rss (aTHX_ coro); break;
		1634	case 1: RETVAL = coro->usecount; break;
		1635	}
		1636	OUTPUT:
		1637	RETVAL
		1638
		1639
1267	MODULE = Coro::State PACKAGE = Coro	1640	MODULE = Coro::State PACKAGE = Coro
1268		1641
1269	BOOT:	1642	BOOT:
1270	{	1643	{
1271	int i;	1644	int i;
		1645
		1646	sv_pool_rss = get_sv ("Coro::POOL_RSS" , TRUE);
		1647	sv_pool_size = get_sv ("Coro::POOL_SIZE" , TRUE);
		1648	av_async_pool = get_av ("Coro::async_pool", TRUE);
		1649
		1650	coro_current = get_sv ("Coro::current", FALSE);
		1651	SvREADONLY_on (coro_current);
1272		1652
1273	coro_stash = gv_stashpv ("Coro", TRUE);	1653	coro_stash = gv_stashpv ("Coro", TRUE);
1274		1654
1275	newCONSTSUB (coro_stash, "PRIO_MAX", newSViv (PRIO_MAX));	1655	newCONSTSUB (coro_stash, "PRIO_MAX", newSViv (PRIO_MAX));
1276	newCONSTSUB (coro_stash, "PRIO_HIGH", newSViv (PRIO_HIGH));	1656	newCONSTSUB (coro_stash, "PRIO_HIGH", newSViv (PRIO_HIGH));
1277	newCONSTSUB (coro_stash, "PRIO_NORMAL", newSViv (PRIO_NORMAL));	1657	newCONSTSUB (coro_stash, "PRIO_NORMAL", newSViv (PRIO_NORMAL));
1278	newCONSTSUB (coro_stash, "PRIO_LOW", newSViv (PRIO_LOW));	1658	newCONSTSUB (coro_stash, "PRIO_LOW", newSViv (PRIO_LOW));
1279	newCONSTSUB (coro_stash, "PRIO_IDLE", newSViv (PRIO_IDLE));	1659	newCONSTSUB (coro_stash, "PRIO_IDLE", newSViv (PRIO_IDLE));
1280	newCONSTSUB (coro_stash, "PRIO_MIN", newSViv (PRIO_MIN));	1660	newCONSTSUB (coro_stash, "PRIO_MIN", newSViv (PRIO_MIN));
1281		1661
1282	coro_current = get_sv ("Coro::current", FALSE);
1283	SvREADONLY_on (coro_current);
1284
1285	for (i = PRIO_MAX - PRIO_MIN + 1; i--; )	1662	for (i = PRIO_MAX - PRIO_MIN + 1; i--; )
1286	coro_ready[i] = newAV ();	1663	coro_ready[i] = newAV ();
1287		1664
1288	{	1665	{
1289	SV *sv = perl_get_sv("Coro::API", 1);	1666	SV *sv = perl_get_sv("Coro::API", 1);
1290		1667
1291	coroapi.schedule = api_schedule;	1668	coroapi.schedule = api_schedule;
1292	coroapi.save = api_save;
1293	coroapi.cede = api_cede;	1669	coroapi.cede = api_cede;
1294	coroapi.cede_notself = api_cede_notself;	1670	coroapi.cede_notself = api_cede_notself;
1295	coroapi.ready = api_ready;	1671	coroapi.ready = api_ready;
1296	coroapi.is_ready = api_is_ready;	1672	coroapi.is_ready = api_is_ready;
1297	coroapi.nready = &coro_nready;	1673	coroapi.nready = &coro_nready;
…		…
1338	CODE:	1714	CODE:
1339	RETVAL = boolSV (api_ready (self));	1715	RETVAL = boolSV (api_ready (self));
1340	OUTPUT:	1716	OUTPUT:
1341	RETVAL	1717	RETVAL
1342		1718
1343	SV *
1344	is_ready (SV *self)
1345	PROTOTYPE: $
1346	CODE:
1347	RETVAL = boolSV (api_is_ready (self));
1348	OUTPUT:
1349	RETVAL
1350
1351	int	1719	int
1352	nready (...)	1720	nready (...)
1353	PROTOTYPE:	1721	PROTOTYPE:
1354	CODE:	1722	CODE:
1355	RETVAL = coro_nready;	1723	RETVAL = coro_nready;
1356	OUTPUT:	1724	OUTPUT:
1357	RETVAL	1725	RETVAL
1358		1726
		1727	# for async_pool speedup
		1728	void
		1729	_pool_1 (SV *cb)
		1730	CODE:
		1731	{
		1732	struct coro *coro = SvSTATE (coro_current);
		1733	HV hv = (HV )SvRV (coro_current);
		1734	AV *defav = GvAV (PL_defgv);
		1735	SV *invoke = hv_delete (hv, "_invoke", sizeof ("_invoke") - 1, 0);
		1736	AV *invoke_av;
		1737	int i, len;
		1738
		1739	if (!invoke)
		1740	croak ("\3terminate\2\n");
		1741
		1742	SvREFCNT_dec (coro->saved_deffh);
		1743	coro->saved_deffh = SvREFCNT_inc ((SV *)PL_defoutgv);
		1744
		1745	hv_store (hv, "desc", sizeof ("desc") - 1,
		1746	newSVpvn ("[async_pool]", sizeof ("[async_pool]") - 1), 0);
		1747
		1748	invoke_av = (AV *)SvRV (invoke);
		1749	len = av_len (invoke_av);
		1750
		1751	sv_setsv (cb, AvARRAY (invoke_av)[0]);
		1752
		1753	if (len > 0)
		1754	{
		1755	av_fill (defav, len - 1);
		1756	for (i = 0; i < len; ++i)
		1757	av_store (defav, i, SvREFCNT_inc (AvARRAY (invoke_av)[i + 1]));
		1758	}
		1759
		1760	SvREFCNT_dec (invoke);
		1761	}
		1762
		1763	void
		1764	_pool_2 (SV *cb)
		1765	CODE:
		1766	{
		1767	struct coro *coro = SvSTATE (coro_current);
		1768
		1769	sv_setsv (cb, &PL_sv_undef);
		1770
		1771	SvREFCNT_dec ((SV )PL_defoutgv); PL_defoutgv = (GV )coro->saved_deffh;
		1772	coro->saved_deffh = 0;
		1773
		1774	if (coro_rss (aTHX_ coro) > SvIV (sv_pool_rss)
		1775	\|\| av_len (av_async_pool) + 1 >= SvIV (sv_pool_size))
		1776	croak ("\3terminate\2\n");
		1777
		1778	av_clear (GvAV (PL_defgv));
		1779	hv_store ((HV *)SvRV (coro_current), "desc", sizeof ("desc") - 1,
		1780	newSVpvn ("[async_pool idle]", sizeof ("[async_pool idle]") - 1), 0);
		1781
		1782	coro->prio = 0;
		1783
		1784	if (coro->cctx && (coro->cctx->flags & CC_TRACE))
		1785	api_trace (coro_current, 0);
		1786
		1787	av_push (av_async_pool, newSVsv (coro_current));
		1788	}
		1789
		1790
1359	MODULE = Coro::State PACKAGE = Coro::AIO	1791	MODULE = Coro::State PACKAGE = Coro::AIO
1360		1792
1361	SV *	1793	SV *
1362	_get_state ()	1794	_get_state ()
1363	CODE:	1795	CODE:

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Comparing Coro/Coro/State.xs (file contents): Revision 1.139 by root, Sun Jan 14 21:13:41 2007 UTC vs. Revision 1.195 by root, Sat Oct 6 00:35:41 2007 UTC

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Comparing Coro/Coro/State.xs (file contents):
Revision 1.139 by root, Sun Jan 14 21:13:41 2007 UTC vs.
Revision 1.195 by root, Sat Oct 6 00:35:41 2007 UTC