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

Comparing Coro/Coro/State.xs (file contents):
Revision 1.147 by root, Mon Mar 19 15:50:48 2007 UTC vs.
Revision 1.227 by root, Sat Apr 5 22:29:54 2008 UTC

…		…
1	#include "libcoro/coro.c"	1	#include "libcoro/coro.c"
2		2
3	#define PERL_NO_GET_CONTEXT	3	#define PERL_NO_GET_CONTEXT
		4	#define PERL_EXT
4		5
5	#include "EXTERN.h"	6	#include "EXTERN.h"
6	#include "perl.h"	7	#include "perl.h"
7	#include "XSUB.h"	8	#include "XSUB.h"
8		9
9	#include "patchlevel.h"	10	#include "patchlevel.h"
10		11
11	#include <stdio.h>	12	#include <stdio.h>
12	#include <errno.h>	13	#include <errno.h>
13	#include <assert.h>	14	#include <assert.h>
		15	#include <inttypes.h> /* portable stdint.h */
14		16
15	#ifdef HAVE_MMAP	17	#ifdef HAVE_MMAP
16	# include <unistd.h>	18	# include <unistd.h>
17	# include <sys/mman.h>	19	# include <sys/mman.h>
18	# ifndef MAP_ANONYMOUS	20	# ifndef MAP_ANONYMOUS
70	# ifndef IS_PADCONST	72	# ifndef IS_PADCONST
71	# define IS_PADCONST(v) 0	73	# define IS_PADCONST(v) 0
72	# endif	74	# endif
73	#endif	75	#endif
74		76
		77	/* 5.8.8 */
		78	#ifndef GV_NOTQUAL
		79	# define GV_NOTQUAL 0
		80	#endif
		81	#ifndef newSV
		82	# define newSV(l) NEWSV(0,l)
		83	#endif
		84
		85	/* 5.11 */
		86	#ifndef CxHASARGS
		87	# define CxHASARGS(cx) (cx)->blk_sub.hasargs
		88	#endif
		89
75	/* 5.8.7 */	90	/* 5.8.7 */
76	#ifndef SvRV_set	91	#ifndef SvRV_set
77	# define SvRV_set(s,v) SvRV(s) = (v)	92	# define SvRV_set(s,v) SvRV(s) = (v)
78	#endif	93	#endif
79		94
…		…
88	/* prefer perl internal functions over our own? */	103	/* prefer perl internal functions over our own? */
89	#ifndef CORO_PREFER_PERL_FUNCTIONS	104	#ifndef CORO_PREFER_PERL_FUNCTIONS
90	# define CORO_PREFER_PERL_FUNCTIONS 0	105	# define CORO_PREFER_PERL_FUNCTIONS 0
91	#endif	106	#endif
92		107
93	/* The next macro should declare a variable stacklevel that contains and approximation	108	/* The next macros try to return the current stack pointer, in an as
94	* to the current C stack pointer. Its property is that it changes with each call	109	* portable way as possible. */
95	* and should be unique. */
96	#define dSTACKLEVEL int stacklevel	110	#define dSTACKLEVEL volatile char stacklevel
97	#define STACKLEVEL ((void *)&stacklevel)	111	#define STACKLEVEL ((void *)&stacklevel)
98		112
99	#define IN_DESTRUCT (PL_main_cv == Nullcv)	113	#define IN_DESTRUCT (PL_main_cv == Nullcv)
100		114
101	#if __GNUC__ >= 3	115	#if __GNUC__ >= 3
102	# define attribute(x) __attribute__(x)	116	# define attribute(x) __attribute__(x)
103	# define BARRIER __asm__ __volatile__ ("" : : : "memory")	117	# define BARRIER __asm__ __volatile__ ("" : : : "memory")
		118	# define expect(expr,value) __builtin_expect ((expr),(value))
104	#else	119	#else
105	# define attribute(x)	120	# define attribute(x)
106	# define BARRIER	121	# define BARRIER
		122	# define expect(expr,value) (expr)
107	#endif	123	#endif
		124
		125	#define expect_false(expr) expect ((expr) != 0, 0)
		126	#define expect_true(expr) expect ((expr) != 0, 1)
108		127
109	#define NOINLINE attribute ((noinline))	128	#define NOINLINE attribute ((noinline))
110		129
111	#include "CoroAPI.h"	130	#include "CoroAPI.h"
112		131
…		…
129	};	148	};
130		149
131	static size_t coro_stacksize = CORO_STACKSIZE;	150	static size_t coro_stacksize = CORO_STACKSIZE;
132	static struct CoroAPI coroapi;	151	static struct CoroAPI coroapi;
133	static AV main_mainstack; / used to differentiate between $main and others */	152	static AV main_mainstack; / used to differentiate between $main and others */
		153	static JMPENV *main_top_env;
134	static HV coro_state_stash, coro_stash;	154	static HV coro_state_stash, coro_stash;
135	static SV coro_mortal; / will be freed after next transfer */	155	static volatile SV coro_mortal; / will be freed after next transfer */
		156
		157	static GV irsgv; / $/ */
		158	static GV stdoutgv; / STDOUT /
		159	static SV *rv_diehook;
		160	static SV *rv_warnhook;
		161	static HV hv_sig; / %SIG */
		162
		163	/* async_pool helper stuff */
		164	static SV *sv_pool_rss;
		165	static SV *sv_pool_size;
		166	static AV *av_async_pool;
136		167
137	static struct coro_cctx *cctx_first;	168	static struct coro_cctx *cctx_first;
138	static int cctx_count, cctx_idle;	169	static int cctx_count, cctx_idle;
		170
		171	enum {
		172	CC_MAPPED = 0x01,
		173	CC_NOREUSE = 0x02, /* throw this away after tracing */
		174	CC_TRACE = 0x04,
		175	CC_TRACE_SUB = 0x08, /* trace sub calls */
		176	CC_TRACE_LINE = 0x10, /* trace each statement */
		177	CC_TRACE_ALL = CC_TRACE_SUB \| CC_TRACE_LINE,
		178	};
139		179
140	/* this is a structure representing a c-level coroutine */	180	/* this is a structure representing a c-level coroutine */
141	typedef struct coro_cctx {	181	typedef struct coro_cctx {
142	struct coro_cctx *next;	182	struct coro_cctx *next;
143		183
…		…
152	coro_context cctx;	192	coro_context cctx;
153		193
154	#if CORO_USE_VALGRIND	194	#if CORO_USE_VALGRIND
155	int valgrind_id;	195	int valgrind_id;
156	#endif	196	#endif
157	char inuse, mapped;	197	unsigned char flags;
158	} coro_cctx;	198	} coro_cctx;
159		199
160	enum {	200	enum {
161	CF_RUNNING = 0x0001, /* coroutine is running */	201	CF_RUNNING = 0x0001, /* coroutine is running */
162	CF_READY = 0x0002, /* coroutine is ready */	202	CF_READY = 0x0002, /* coroutine is ready */
163	CF_NEW = 0x0004, /* has never been switched to */	203	CF_NEW = 0x0004, /* has never been switched to */
164	CF_DESTROYED = 0x0008, /* coroutine data has been freed */	204	CF_DESTROYED = 0x0008, /* coroutine data has been freed */
165	};	205	};
166		206
		207	/* the structure where most of the perl state is stored, overlaid on the cxstack */
		208	typedef struct {
		209	SV *defsv;
		210	AV *defav;
		211	SV *errsv;
		212	SV *irsgv;
		213	#define VAR(name,type) type name;
		214	# include "state.h"
		215	#undef VAR
		216	} perl_slots;
		217
		218	#define SLOT_COUNT ((sizeof (perl_slots) + sizeof (PERL_CONTEXT) - 1) / sizeof (PERL_CONTEXT))
		219
167	/* this is a structure representing a perl-level coroutine */	220	/* this is a structure representing a perl-level coroutine */
168	struct coro {	221	struct coro {
169	/* the c coroutine allocated to this perl coroutine, if any */	222	/* the c coroutine allocated to this perl coroutine, if any */
170	coro_cctx *cctx;	223	coro_cctx *cctx;
171		224
		225	/* process data */
		226	AV *mainstack;
		227	perl_slots slot; / basically the saved sp */
		228
172	/* data associated with this coroutine (initial args) */	229	AV args; / data associated with this coroutine (initial args) */
173	AV *args;	230	int refcnt; /* coroutines are refcounted, yes */
174	int refcnt;
175	int save; /* CORO_SAVE flags */
176	int flags; /* CF_ flags */	231	int flags; /* CF_ flags */
		232	HV hv; / the perl hash associated with this coro, if any */
177		233
178	/* optionally saved, might be zero */	234	/* statistics */
179	AV defav; / @_ */	235	int usecount; /* number of transfers to this coro */
180	SV defsv; / $_ */
181	SV errsv; / $@ */
182	GV deffh; / default filehandle */
183	SV irssv; / $/ */
184	SV irssv_sv; / real $/ cache */
185
186	#define VAR(name,type) type name;
187	# include "state.h"
188	#undef VAR
189		236
190	/* coro process data */	237	/* coro process data */
191	int prio;	238	int prio;
		239	SV throw; / exception to be thrown */
		240
		241	/* async_pool */
		242	SV *saved_deffh;
		243
		244	/* linked list */
		245	struct coro next, prev;
192	};	246	};
193		247
194	typedef struct coro *Coro__State;	248	typedef struct coro *Coro__State;
195	typedef struct coro *Coro__State_or_hashref;	249	typedef struct coro *Coro__State_or_hashref;
196		250
…		…
205		259
206	/* for Coro.pm */	260	/* for Coro.pm */
207	static SV *coro_current;	261	static SV *coro_current;
208	static AV *coro_ready [PRIO_MAX-PRIO_MIN+1];	262	static AV *coro_ready [PRIO_MAX-PRIO_MIN+1];
209	static int coro_nready;	263	static int coro_nready;
		264	static struct coro *coro_first;
210		265
211	/ lowlevel stuff ********************************************************/	266	/ lowlevel stuff ********************************************************/
		267
		268	static SV *
		269	coro_get_sv (pTHX_ const char *name, int create)
		270	{
		271	#if PERL_VERSION_ATLEAST (5,9,0)
		272	/* silence stupid and wrong 5.10 warning that I am unable to switch off */
		273	get_sv (name, create);
		274	#endif
		275	return get_sv (name, create);
		276	}
		277
		278	static AV *
		279	coro_get_av (pTHX_ const char *name, int create)
		280	{
		281	#if PERL_VERSION_ATLEAST (5,9,0)
		282	/* silence stupid and wrong 5.10 warning that I am unable to switch off */
		283	get_av (name, create);
		284	#endif
		285	return get_av (name, create);
		286	}
		287
		288	static HV *
		289	coro_get_hv (pTHX_ const char *name, int create)
		290	{
		291	#if PERL_VERSION_ATLEAST (5,9,0)
		292	/* silence stupid and wrong 5.10 warning that I am unable to switch off */
		293	get_hv (name, create);
		294	#endif
		295	return get_hv (name, create);
		296	}
212		297
213	static AV *	298	static AV *
214	coro_clone_padlist (pTHX_ CV *cv)	299	coro_clone_padlist (pTHX_ CV *cv)
215	{	300	{
216	AV *padlist = CvPADLIST (cv);	301	AV *padlist = CvPADLIST (cv);
…		…
264		349
265	/* casting is fun. */	350	/* casting is fun. */
266	while (&PL_sv_undef != (SV )(padlist = (AV )av_pop (av)))	351	while (&PL_sv_undef != (SV )(padlist = (AV )av_pop (av)))
267	free_padlist (aTHX_ padlist);	352	free_padlist (aTHX_ padlist);
268		353
269	SvREFCNT_dec (av);
270
271	return 0;	354	return 0;
272	}	355	}
273		356
274	#define PERL_MAGIC_coro PERL_MAGIC_ext	357	#define CORO_MAGIC_type_cv PERL_MAGIC_ext
		358	#define CORO_MAGIC_type_state PERL_MAGIC_ext
275		359
276	static MGVTBL vtbl_coro = {0, 0, 0, 0, coro_cv_free};	360	static MGVTBL coro_cv_vtbl = {
		361	0, 0, 0, 0,
		362	coro_cv_free
		363	};
277		364
278	#define CORO_MAGIC(cv) \	365	#define CORO_MAGIC(sv,type) \
279	SvMAGIC (cv) \	366	SvMAGIC (sv) \
280	? SvMAGIC (cv)->mg_type == PERL_MAGIC_coro \	367	? SvMAGIC (sv)->mg_type == type \
281	? SvMAGIC (cv) \	368	? SvMAGIC (sv) \
282	: mg_find ((SV *)cv, PERL_MAGIC_coro) \	369	: mg_find (sv, type) \
283	: 0	370	: 0
		371
		372	#define CORO_MAGIC_cv(cv) CORO_MAGIC (((SV *)(cv)), CORO_MAGIC_type_cv)
		373	#define CORO_MAGIC_state(sv) CORO_MAGIC (((SV *)(sv)), CORO_MAGIC_type_state)
		374
		375	static struct coro *
		376	SvSTATE_ (pTHX_ SV *coro)
		377	{
		378	HV *stash;
		379	MAGIC *mg;
		380
		381	if (SvROK (coro))
		382	coro = SvRV (coro);
		383
		384	if (expect_false (SvTYPE (coro) != SVt_PVHV))
		385	croak ("Coro::State object required");
		386
		387	stash = SvSTASH (coro);
		388	if (expect_false (stash != coro_stash && stash != coro_state_stash))
		389	{
		390	/* very slow, but rare, check */
		391	if (!sv_derived_from (sv_2mortal (newRV_inc (coro)), "Coro::State"))
		392	croak ("Coro::State object required");
		393	}
		394
		395	mg = CORO_MAGIC_state (coro);
		396	return (struct coro *)mg->mg_ptr;
		397	}
		398
		399	#define SvSTATE(sv) SvSTATE_ (aTHX_ (sv))
284		400
285	/* the next two functions merely cache the padlists */	401	/* the next two functions merely cache the padlists */
286	static void	402	static void
287	get_padlist (pTHX_ CV *cv)	403	get_padlist (pTHX_ CV *cv)
288	{	404	{
289	MAGIC *mg = CORO_MAGIC (cv);	405	MAGIC *mg = CORO_MAGIC_cv (cv);
290	AV *av;	406	AV *av;
291		407
292	if (mg && AvFILLp ((av = (AV *)mg->mg_obj)) >= 0)	408	if (expect_true (mg && AvFILLp ((av = (AV *)mg->mg_obj)) >= 0))
293	CvPADLIST (cv) = (AV *)AvARRAY (av)[AvFILLp (av)--];	409	CvPADLIST (cv) = (AV *)AvARRAY (av)[AvFILLp (av)--];
294	else	410	else
295	{	411	{
296	#if CORO_PREFER_PERL_FUNCTIONS	412	#if CORO_PREFER_PERL_FUNCTIONS
297	/* this is probably cleaner, but also slower? */	413	/* this is probably cleaner, but also slower? */
…		…
306	}	422	}
307		423
308	static void	424	static void
309	put_padlist (pTHX_ CV *cv)	425	put_padlist (pTHX_ CV *cv)
310	{	426	{
311	MAGIC *mg = CORO_MAGIC (cv);	427	MAGIC *mg = CORO_MAGIC_cv (cv);
312	AV *av;	428	AV *av;
313		429
314	if (!mg)	430	if (expect_false (!mg))
315	{	431	mg = sv_magicext ((SV )cv, (SV )newAV (), CORO_MAGIC_type_cv, &coro_cv_vtbl, 0, 0);
316	sv_magic ((SV *)cv, 0, PERL_MAGIC_coro, 0, 0);
317	mg = mg_find ((SV *)cv, PERL_MAGIC_coro);
318	mg->mg_virtual = &vtbl_coro;
319	mg->mg_obj = (SV *)newAV ();
320	}
321		432
322	av = (AV *)mg->mg_obj;	433	av = (AV *)mg->mg_obj;
323		434
324	if (AvFILLp (av) >= AvMAX (av))	435	if (expect_false (AvFILLp (av) >= AvMAX (av)))
325	av_extend (av, AvMAX (av) + 1);	436	av_extend (av, AvMAX (av) + 1);
326		437
327	AvARRAY (av)[++AvFILLp (av)] = (SV *)CvPADLIST (cv);	438	AvARRAY (av)[++AvFILLp (av)] = (SV *)CvPADLIST (cv);
328	}	439	}
329		440
330	/ load & save, init *****************************************************/	441	/ load & save, init *****************************************************/
331
332	#define SB do {
333	#define SE } while (0)
334
335	#define REPLACE_SV(sv,val) SB SvREFCNT_dec (sv); (sv) = (val); (val) = 0; SE
336		442
337	static void	443	static void
338	load_perl (pTHX_ Coro__State c)	444	load_perl (pTHX_ Coro__State c)
339	{	445	{
		446	perl_slots *slot = c->slot;
		447	c->slot = 0;
		448
		449	PL_mainstack = c->mainstack;
		450
		451	GvSV (PL_defgv) = slot->defsv;
		452	GvAV (PL_defgv) = slot->defav;
		453	GvSV (PL_errgv) = slot->errsv;
		454	GvSV (irsgv) = slot->irsgv;
		455
340	#define VAR(name,type) PL_ ## name = c->name;	456	#define VAR(name,type) PL_ ## name = slot->name;
341	# include "state.h"	457	# include "state.h"
342	#undef VAR	458	#undef VAR
343
344	if (c->defav) REPLACE_SV (GvAV (PL_defgv), c->defav);
345	if (c->defsv) REPLACE_SV (DEFSV , c->defsv);
346	if (c->errsv) REPLACE_SV (ERRSV , c->errsv);
347	if (c->deffh) REPLACE_SV (PL_defoutgv , c->deffh);
348
349	if (c->irssv)
350	{
351	if (c->irssv == PL_rs \|\| sv_eq (PL_rs, c->irssv))
352	{
353	SvREFCNT_dec (c->irssv);
354	c->irssv = 0;
355	}
356	else
357	{
358	REPLACE_SV (PL_rs, c->irssv);
359	if (!c->irssv_sv) c->irssv_sv = get_sv ("/", 0);
360	sv_setsv (c->irssv_sv, PL_rs);
361	}
362	}
363		459
364	{	460	{
365	dSP;	461	dSP;
		462
366	CV *cv;	463	CV *cv;
367		464
368	/* now do the ugly restore mess */	465	/* now do the ugly restore mess */
369	while ((cv = (CV *)POPs))	466	while (expect_true (cv = (CV *)POPs))
370	{	467	{
371	put_padlist (aTHX_ cv); /* mark this padlist as available */	468	put_padlist (aTHX_ cv); /* mark this padlist as available */
372	CvDEPTH (cv) = PTR2IV (POPs);	469	CvDEPTH (cv) = PTR2IV (POPs);
373	CvPADLIST (cv) = (AV *)POPs;	470	CvPADLIST (cv) = (AV *)POPs;
374	}	471	}
375		472
376	PUTBACK;	473	PUTBACK;
377	}	474	}
378	assert (!PL_comppad \|\| AvARRAY (PL_comppad));//D
379	}	475	}
380		476
381	static void	477	static void
382	save_perl (pTHX_ Coro__State c)	478	save_perl (pTHX_ Coro__State c)
383	{	479	{
384	assert (!PL_comppad \|\| AvARRAY (PL_comppad));//D
385	{	480	{
386	dSP;	481	dSP;
387	I32 cxix = cxstack_ix;	482	I32 cxix = cxstack_ix;
388	PERL_CONTEXT *ccstk = cxstack;	483	PERL_CONTEXT *ccstk = cxstack;
389	PERL_SI *top_si = PL_curstackinfo;	484	PERL_SI *top_si = PL_curstackinfo;
…		…
391	/*	486	/*
392	* the worst thing you can imagine happens first - we have to save	487	* the worst thing you can imagine happens first - we have to save
393	* (and reinitialize) all cv's in the whole callchain :(	488	* (and reinitialize) all cv's in the whole callchain :(
394	*/	489	*/
395		490
396	EXTEND (SP, 3 + 1);
397	PUSHs (Nullsv);	491	XPUSHs (Nullsv);
398	/* this loop was inspired by pp_caller */	492	/* this loop was inspired by pp_caller */
399	for (;;)	493	for (;;)
400	{	494	{
401	while (cxix >= 0)	495	while (expect_true (cxix >= 0))
402	{	496	{
403	PERL_CONTEXT *cx = &ccstk[cxix--];	497	PERL_CONTEXT *cx = &ccstk[cxix--];
404		498
405	if (CxTYPE (cx) == CXt_SUB)	499	if (expect_true (CxTYPE (cx) == CXt_SUB \|\| CxTYPE (cx) == CXt_FORMAT))
406	{	500	{
407	CV *cv = cx->blk_sub.cv;	501	CV *cv = cx->blk_sub.cv;
408		502
409	if (CvDEPTH (cv))	503	if (expect_true (CvDEPTH (cv)))
410	{	504	{
411	EXTEND (SP, 3);	505	EXTEND (SP, 3);
412	PUSHs ((SV *)CvPADLIST (cv));	506	PUSHs ((SV *)CvPADLIST (cv));
413	PUSHs (INT2PTR (SV *, CvDEPTH (cv)));	507	PUSHs (INT2PTR (SV *, CvDEPTH (cv)));
414	PUSHs ((SV *)cv);	508	PUSHs ((SV *)cv);
…		…
417	get_padlist (aTHX_ cv);	511	get_padlist (aTHX_ cv);
418	}	512	}
419	}	513	}
420	}	514	}
421		515
422	if (top_si->si_type == PERLSI_MAIN)	516	if (expect_true (top_si->si_type == PERLSI_MAIN))
423	break;	517	break;
424		518
425	top_si = top_si->si_prev;	519	top_si = top_si->si_prev;
426	ccstk = top_si->si_cxstack;	520	ccstk = top_si->si_cxstack;
427	cxix = top_si->si_cxix;	521	cxix = top_si->si_cxix;
428	}	522	}
429		523
430	PUTBACK;	524	PUTBACK;
431	}	525	}
432		526
433	c->defav = c->save & CORO_SAVE_DEFAV ? (AV *)SvREFCNT_inc (GvAV (PL_defgv)) : 0;	527	/* allocate some space on the context stack for our purposes */
434	c->defsv = c->save & CORO_SAVE_DEFSV ? SvREFCNT_inc (DEFSV) : 0;	528	/* we manually unroll here, as usually 2 slots is enough */
435	c->errsv = c->save & CORO_SAVE_ERRSV ? SvREFCNT_inc (ERRSV) : 0;	529	if (SLOT_COUNT >= 1) CXINC;
436	c->deffh = c->save & CORO_SAVE_DEFFH ? (GV *)SvREFCNT_inc (PL_defoutgv) : 0;	530	if (SLOT_COUNT >= 2) CXINC;
437	c->irssv = c->save & CORO_SAVE_IRSSV ? SvREFCNT_inc (PL_rs) : 0;	531	if (SLOT_COUNT >= 3) CXINC;
		532	{
		533	int i;
		534	for (i = 3; i < SLOT_COUNT; ++i)
		535	CXINC;
		536	}
		537	cxstack_ix -= SLOT_COUNT; /* undo allocation */
438		538
		539	c->mainstack = PL_mainstack;
		540
		541	{
		542	perl_slots slot = c->slot = (perl_slots )(cxstack + cxstack_ix + 1);
		543
		544	slot->defav = GvAV (PL_defgv);
		545	slot->defsv = DEFSV;
		546	slot->errsv = ERRSV;
		547	slot->irsgv = GvSV (irsgv);
		548
439	#define VAR(name,type)c->name = PL_ ## name;	549	#define VAR(name,type) slot->name = PL_ ## name;
440	# include "state.h"	550	# include "state.h"
441	#undef VAR	551	#undef VAR
		552	}
442	}	553	}
443		554
444	/*	555	/*
445	* allocate various perl stacks. This is an exact copy	556	* allocate various perl stacks. This is an exact copy
446	* of perl.c:init_stacks, except that it uses less memory	557	* of perl.c:init_stacks, except that it uses less memory
…		…
451	# define coro_init_stacks init_stacks	562	# define coro_init_stacks init_stacks
452	#else	563	#else
453	static void	564	static void
454	coro_init_stacks (pTHX)	565	coro_init_stacks (pTHX)
455	{	566	{
456	PL_curstackinfo = new_stackinfo(128, 1024/sizeof(PERL_CONTEXT));	567	PL_curstackinfo = new_stackinfo(32, 8);
457	PL_curstackinfo->si_type = PERLSI_MAIN;	568	PL_curstackinfo->si_type = PERLSI_MAIN;
458	PL_curstack = PL_curstackinfo->si_stack;	569	PL_curstack = PL_curstackinfo->si_stack;
459	PL_mainstack = PL_curstack; /* remember in case we switch stacks */	570	PL_mainstack = PL_curstack; /* remember in case we switch stacks */
460		571
461	PL_stack_base = AvARRAY(PL_curstack);	572	PL_stack_base = AvARRAY(PL_curstack);
462	PL_stack_sp = PL_stack_base;	573	PL_stack_sp = PL_stack_base;
463	PL_stack_max = PL_stack_base + AvMAX(PL_curstack);	574	PL_stack_max = PL_stack_base + AvMAX(PL_curstack);
464		575
465	New(50,PL_tmps_stack,128,SV*);	576	New(50,PL_tmps_stack,32,SV*);
466	PL_tmps_floor = -1;	577	PL_tmps_floor = -1;
467	PL_tmps_ix = -1;	578	PL_tmps_ix = -1;
468	PL_tmps_max = 128;	579	PL_tmps_max = 32;
469		580
470	New(54,PL_markstack,32,I32);	581	New(54,PL_markstack,16,I32);
471	PL_markstack_ptr = PL_markstack;	582	PL_markstack_ptr = PL_markstack;
472	PL_markstack_max = PL_markstack + 32;	583	PL_markstack_max = PL_markstack + 16;
473		584
474	#ifdef SET_MARK_OFFSET	585	#ifdef SET_MARK_OFFSET
475	SET_MARK_OFFSET;	586	SET_MARK_OFFSET;
476	#endif	587	#endif
477		588
478	New(54,PL_scopestack,32,I32);	589	New(54,PL_scopestack,8,I32);
479	PL_scopestack_ix = 0;	590	PL_scopestack_ix = 0;
480	PL_scopestack_max = 32;	591	PL_scopestack_max = 8;
481		592
482	New(54,PL_savestack,64,ANY);	593	New(54,PL_savestack,24,ANY);
483	PL_savestack_ix = 0;	594	PL_savestack_ix = 0;
484	PL_savestack_max = 64;	595	PL_savestack_max = 24;
485		596
486	#if !PERL_VERSION_ATLEAST (5,9,0)	597	#if !PERL_VERSION_ATLEAST (5,9,0)
487	New(54,PL_retstack,16,OP*);	598	New(54,PL_retstack,4,OP*);
488	PL_retstack_ix = 0;	599	PL_retstack_ix = 0;
489	PL_retstack_max = 16;	600	PL_retstack_max = 4;
490	#endif	601	#endif
491	}	602	}
492	#endif	603	#endif
493		604
494	/*	605	/*
495	* destroy the stacks, the callchain etc...	606	* destroy the stacks, the callchain etc...
496	*/	607	*/
497	static void	608	static void
498	coro_destroy_stacks (pTHX)	609	coro_destroy_stacks (pTHX)
499	{	610	{
500	if (!IN_DESTRUCT)
501	{
502	/* restore all saved variables and stuff */
503	LEAVE_SCOPE (0);
504	assert (PL_tmps_floor == -1);
505
506	/* free all temporaries */
507	FREETMPS;
508	assert (PL_tmps_ix == -1);
509
510	/* unwind all extra stacks */
511	POPSTACK_TO (PL_mainstack);
512
513	/* unwind main stack */
514	dounwind (-1);
515	}
516
517	while (PL_curstackinfo->si_next)	611	while (PL_curstackinfo->si_next)
518	PL_curstackinfo = PL_curstackinfo->si_next;	612	PL_curstackinfo = PL_curstackinfo->si_next;
519		613
520	while (PL_curstackinfo)	614	while (PL_curstackinfo)
521	{	615	{
…		…
536	#if !PERL_VERSION_ATLEAST (5,9,0)	630	#if !PERL_VERSION_ATLEAST (5,9,0)
537	Safefree (PL_retstack);	631	Safefree (PL_retstack);
538	#endif	632	#endif
539	}	633	}
540		634
		635	static size_t
		636	coro_rss (pTHX_ struct coro *coro)
		637	{
		638	size_t rss = sizeof (*coro);
		639
		640	if (coro->mainstack)
		641	{
		642	perl_slots tmp_slot;
		643	perl_slots *slot;
		644
		645	if (coro->flags & CF_RUNNING)
		646	{
		647	slot = &tmp_slot;
		648
		649	#define VAR(name,type) slot->name = PL_ ## name;
		650	# include "state.h"
		651	#undef VAR
		652	}
		653	else
		654	slot = coro->slot;
		655
		656	rss += sizeof (slot->curstackinfo);
		657	rss += (slot->curstackinfo->si_cxmax + 1) * sizeof (PERL_CONTEXT);
		658	rss += sizeof (SV) + sizeof (struct xpvav) + (1 + AvMAX (slot->curstack)) * sizeof (SV *);
		659	rss += slot->tmps_max * sizeof (SV *);
		660	rss += (slot->markstack_max - slot->markstack_ptr) * sizeof (I32);
		661	rss += slot->scopestack_max * sizeof (I32);
		662	rss += slot->savestack_max * sizeof (ANY);
		663
		664	#if !PERL_VERSION_ATLEAST (5,9,0)
		665	rss += slot->retstack_max * sizeof (OP *);
		666	#endif
		667	}
		668
		669	return rss;
		670	}
		671
541	/ coroutine stack handling **********************************************/	672	/ coroutine stack handling **********************************************/
542		673
		674	static int (orig_sigelem_get) (pTHX_ SV sv, MAGIC *mg);
		675	static int (orig_sigelem_set) (pTHX_ SV sv, MAGIC *mg);
		676
		677	/*
		678	* This overrides the default magic get method of %SIG elements.
		679	* The original one doesn't provide for reading back of PL_diehook/PL_warnhook
		680	* and instead of tryign to save and restore the hash elements, we just provide
		681	* readback here.
		682	* We only do this when the hook is != 0, as they are often set to 0 temporarily,
		683	* not expecting this to actually change the hook. This is a potential problem
		684	* when a schedule happens then, but we ignore this.
		685	*/
		686	static int
		687	coro_sigelem_get (pTHX_ SV sv, MAGIC mg)
		688	{
		689	const char *s = MgPV_nolen_const (mg);
		690
		691	if (*s == '_')
		692	{
		693	if (strEQ (s, "__DIE__" ) && PL_diehook ) return sv_setsv (sv, PL_diehook ), 0;
		694	if (strEQ (s, "__WARN__") && PL_warnhook) return sv_setsv (sv, PL_warnhook), 0;
		695	}
		696
		697	return orig_sigelem_get ? orig_sigelem_get (aTHX_ sv, mg) : 0;
		698	}
		699
		700	static int
		701	coro_sigelem_set (pTHX_ SV sv, MAGIC mg)
		702	{
		703	const char *s = MgPV_nolen_const (mg);
		704
		705	if (*s == '_')
		706	{
		707	SV **svp = 0;
		708
		709	if (strEQ (s, "__DIE__" )) svp = &PL_diehook;
		710	if (strEQ (s, "__WARN__")) svp = &PL_warnhook;
		711
		712	if (svp)
		713	{
		714	SV old = svp;
		715	*svp = newSVsv (sv);
		716	SvREFCNT_dec (old);
		717	return;
		718	}
		719	}
		720
		721	return orig_sigelem_set ? orig_sigelem_set (aTHX_ sv, mg) : 0;
		722	}
		723
543	static void	724	static void
544	setup_coro (pTHX_ struct coro *coro)	725	coro_setup (pTHX_ struct coro *coro)
545	{	726	{
546	/*	727	/*
547	* emulate part of the perl startup here.	728	* emulate part of the perl startup here.
548	*/	729	*/
549	coro_init_stacks (aTHX);	730	coro_init_stacks (aTHX);
550		731
		732	PL_runops = RUNOPS_DEFAULT;
551	PL_curcop = &PL_compiling;	733	PL_curcop = &PL_compiling;
552	PL_in_eval = EVAL_NULL;	734	PL_in_eval = EVAL_NULL;
553	PL_comppad = 0;	735	PL_comppad = 0;
554	PL_curpm = 0;	736	PL_curpm = 0;
		737	PL_curpad = 0;
555	PL_localizing = 0;	738	PL_localizing = 0;
556	PL_dirty = 0;	739	PL_dirty = 0;
557	PL_restartop = 0;	740	PL_restartop = 0;
558		741
		742	/* recreate the die/warn hooks */
		743	PL_diehook = 0; SvSetMagicSV (*hv_fetch (hv_sig, "__DIE__" , sizeof ("__DIE__" ) - 1, 1), rv_diehook );
		744	PL_warnhook = 0; SvSetMagicSV (*hv_fetch (hv_sig, "__WARN__", sizeof ("__WARN__") - 1, 1), rv_warnhook);
		745
		746	GvSV (PL_defgv) = newSV (0);
		747	GvAV (PL_defgv) = coro->args; coro->args = 0;
		748	GvSV (PL_errgv) = newSV (0);
		749	GvSV (irsgv) = newSVpvn ("\n", 1); sv_magic (GvSV (irsgv), (SV *)irsgv, PERL_MAGIC_sv, "/", 0);
		750	PL_rs = newSVsv (GvSV (irsgv));
		751	PL_defoutgv = (GV *)SvREFCNT_inc (stdoutgv);
		752
559	{	753	{
560	dSP;	754	dSP;
561	LOGOP myop;	755	LOGOP myop;
562		756
563	SvREFCNT_dec (GvAV (PL_defgv));
564	GvAV (PL_defgv) = coro->args; coro->args = 0;
565
566	Zero (&myop, 1, LOGOP);	757	Zero (&myop, 1, LOGOP);
567	myop.op_next = Nullop;	758	myop.op_next = Nullop;
568	myop.op_flags = OPf_WANT_VOID;	759	myop.op_flags = OPf_WANT_VOID;
569		760
570	PUSHMARK (SP);	761	PUSHMARK (SP);
571	XPUSHs ((SV *)get_cv ("Coro::State::_coro_init", FALSE));	762	XPUSHs (sv_2mortal (av_shift (GvAV (PL_defgv))));
572	PUTBACK;	763	PUTBACK;
573	PL_op = (OP *)&myop;	764	PL_op = (OP *)&myop;
574	PL_op = PL_ppaddr[OP_ENTERSUB](aTHX);	765	PL_op = PL_ppaddr[OP_ENTERSUB](aTHX);
575	SPAGAIN;	766	SPAGAIN;
576	}	767	}
577		768
578	ENTER; /* necessary e.g. for dounwind */	769	/* this newly created coroutine might be run on an existing cctx which most
		770	* likely was suspended in set_stacklevel, called from entersub.
		771	* set_stacklevl doesn't do anything on return, but entersub does LEAVE,
		772	* so we ENTER here for symmetry
		773	*/
		774	ENTER;
		775	}
		776
		777	static void
		778	coro_destroy (pTHX_ struct coro *coro)
		779	{
		780	if (!IN_DESTRUCT)
		781	{
		782	/* restore all saved variables and stuff */
		783	LEAVE_SCOPE (0);
		784	assert (PL_tmps_floor == -1);
		785
		786	/* free all temporaries */
		787	FREETMPS;
		788	assert (PL_tmps_ix == -1);
		789
		790	/* unwind all extra stacks */
		791	POPSTACK_TO (PL_mainstack);
		792
		793	/* unwind main stack */
		794	dounwind (-1);
		795	}
		796
		797	SvREFCNT_dec (GvSV (PL_defgv));
		798	SvREFCNT_dec (GvAV (PL_defgv));
		799	SvREFCNT_dec (GvSV (PL_errgv));
		800	SvREFCNT_dec (PL_defoutgv);
		801	SvREFCNT_dec (PL_rs);
		802	SvREFCNT_dec (GvSV (irsgv));
		803
		804	SvREFCNT_dec (PL_diehook);
		805	SvREFCNT_dec (PL_warnhook);
		806
		807	SvREFCNT_dec (coro->saved_deffh);
		808	SvREFCNT_dec (coro->throw);
		809
		810	coro_destroy_stacks (aTHX);
579	}	811	}
580		812
581	static void	813	static void
582	free_coro_mortal (pTHX)	814	free_coro_mortal (pTHX)
583	{	815	{
584	if (coro_mortal)	816	if (expect_true (coro_mortal))
585	{	817	{
586	SvREFCNT_dec (coro_mortal);	818	SvREFCNT_dec (coro_mortal);
587	coro_mortal = 0;	819	coro_mortal = 0;
588	}	820	}
589	}	821	}
590		822
		823	static int
		824	runops_trace (pTHX)
		825	{
		826	COP *oldcop = 0;
		827	int oldcxix = -2;
		828	struct coro coro = SvSTATE (coro_current); / trace cctx is tied to specific coro */
		829	coro_cctx *cctx = coro->cctx;
		830
		831	while ((PL_op = CALL_FPTR (PL_op->op_ppaddr) (aTHX)))
		832	{
		833	PERL_ASYNC_CHECK ();
		834
		835	if (cctx->flags & CC_TRACE_ALL)
		836	{
		837	if (PL_op->op_type == OP_LEAVESUB && cctx->flags & CC_TRACE_SUB)
		838	{
		839	PERL_CONTEXT *cx = &cxstack[cxstack_ix];
		840	SV bot, top;
		841	AV av = newAV (); / return values */
		842	SV **cb;
		843	dSP;
		844
		845	GV *gv = CvGV (cx->blk_sub.cv);
		846	SV *fullname = sv_2mortal (newSV (0));
		847	if (isGV (gv))
		848	gv_efullname3 (fullname, gv, 0);
		849
		850	bot = PL_stack_base + cx->blk_oldsp + 1;
		851	top = cx->blk_gimme == G_ARRAY ? SP + 1
		852	: cx->blk_gimme == G_SCALAR ? bot + 1
		853	: bot;
		854
		855	av_extend (av, top - bot);
		856	while (bot < top)
		857	av_push (av, SvREFCNT_inc (*bot++));
		858
		859	PL_runops = RUNOPS_DEFAULT;
		860	ENTER;
		861	SAVETMPS;
		862	EXTEND (SP, 3);
		863	PUSHMARK (SP);
		864	PUSHs (&PL_sv_no);
		865	PUSHs (fullname);
		866	PUSHs (sv_2mortal (newRV_noinc ((SV *)av)));
		867	PUTBACK;
		868	cb = hv_fetch ((HV *)SvRV (coro_current), "_trace_sub_cb", sizeof ("_trace_sub_cb") - 1, 0);
		869	if (cb) call_sv (*cb, G_KEEPERR \| G_EVAL \| G_VOID \| G_DISCARD);
		870	SPAGAIN;
		871	FREETMPS;
		872	LEAVE;
		873	PL_runops = runops_trace;
		874	}
		875
		876	if (oldcop != PL_curcop)
		877	{
		878	oldcop = PL_curcop;
		879
		880	if (PL_curcop != &PL_compiling)
		881	{
		882	SV **cb;
		883
		884	if (oldcxix != cxstack_ix && cctx->flags & CC_TRACE_SUB)
		885	{
		886	PERL_CONTEXT *cx = &cxstack[cxstack_ix];
		887
		888	if (CxTYPE (cx) == CXt_SUB && oldcxix < cxstack_ix)
		889	{
		890	runops_proc_t old_runops = PL_runops;
		891	dSP;
		892	GV *gv = CvGV (cx->blk_sub.cv);
		893	SV *fullname = sv_2mortal (newSV (0));
		894
		895	if (isGV (gv))
		896	gv_efullname3 (fullname, gv, 0);
		897
		898	PL_runops = RUNOPS_DEFAULT;
		899	ENTER;
		900	SAVETMPS;
		901	EXTEND (SP, 3);
		902	PUSHMARK (SP);
		903	PUSHs (&PL_sv_yes);
		904	PUSHs (fullname);
		905	PUSHs (CxHASARGS (cx) ? sv_2mortal (newRV_inc ((SV *)cx->blk_sub.argarray)) : &PL_sv_undef);
		906	PUTBACK;
		907	cb = hv_fetch ((HV *)SvRV (coro_current), "_trace_sub_cb", sizeof ("_trace_sub_cb") - 1, 0);
		908	if (cb) call_sv (*cb, G_KEEPERR \| G_EVAL \| G_VOID \| G_DISCARD);
		909	SPAGAIN;
		910	FREETMPS;
		911	LEAVE;
		912	PL_runops = runops_trace;
		913	}
		914
		915	oldcxix = cxstack_ix;
		916	}
		917
		918	if (cctx->flags & CC_TRACE_LINE)
		919	{
		920	dSP;
		921
		922	PL_runops = RUNOPS_DEFAULT;
		923	ENTER;
		924	SAVETMPS;
		925	EXTEND (SP, 3);
		926	PL_runops = RUNOPS_DEFAULT;
		927	PUSHMARK (SP);
		928	PUSHs (sv_2mortal (newSVpv (OutCopFILE (oldcop), 0)));
		929	PUSHs (sv_2mortal (newSViv (CopLINE (oldcop))));
		930	PUTBACK;
		931	cb = hv_fetch ((HV *)SvRV (coro_current), "_trace_line_cb", sizeof ("_trace_line_cb") - 1, 0);
		932	if (cb) call_sv (*cb, G_KEEPERR \| G_EVAL \| G_VOID \| G_DISCARD);
		933	SPAGAIN;
		934	FREETMPS;
		935	LEAVE;
		936	PL_runops = runops_trace;
		937	}
		938	}
		939	}
		940	}
		941	}
		942
		943	TAINT_NOT;
		944	return 0;
		945	}
		946
591	/* inject a fake call to Coro::State::_cctx_init into the execution */	947	/* inject a fake call to Coro::State::_cctx_init into the execution */
		948	/* _cctx_init should be careful, as it could be called at almost any time */
		949	/* during execution of a perl program */
592	static void NOINLINE	950	static void NOINLINE
593	prepare_cctx (pTHX_ coro_cctx *cctx)	951	cctx_prepare (pTHX_ coro_cctx *cctx)
594	{	952	{
595	dSP;	953	dSP;
596	LOGOP myop;	954	LOGOP myop;
		955
		956	PL_top_env = &PL_start_env;
		957
		958	if (cctx->flags & CC_TRACE)
		959	PL_runops = runops_trace;
597		960
598	Zero (&myop, 1, LOGOP);	961	Zero (&myop, 1, LOGOP);
599	myop.op_next = PL_op;	962	myop.op_next = PL_op;
600	myop.op_flags = OPf_WANT_VOID \| OPf_STACKED;	963	myop.op_flags = OPf_WANT_VOID \| OPf_STACKED;
601		964
…		…
607	PL_op = (OP *)&myop;	970	PL_op = (OP *)&myop;
608	PL_op = PL_ppaddr[OP_ENTERSUB](aTHX);	971	PL_op = PL_ppaddr[OP_ENTERSUB](aTHX);
609	SPAGAIN;	972	SPAGAIN;
610	}	973	}
611		974
		975	/*
		976	* this is a _very_ stripped down perl interpreter ;)
		977	*/
612	static void	978	static void
613	coro_run (void *arg)	979	cctx_run (void *arg)
614	{	980	{
615	dTHX;	981	dTHX;
616		982
617	/* coro_run is the alternative tail of transfer(), so unlock here. */	983	/* cctx_run is the alternative tail of transfer(), so unlock here. */
618	UNLOCK;	984	UNLOCK;
619		985
620	/*	986	/* we now skip the entersub that lead to transfer() */
621	* this is a _very_ stripped down perl interpreter ;)	987	PL_op = PL_op->op_next;
622	*/
623	PL_top_env = &PL_start_env;
624		988
625	/* inject call to cctx_init */	989	/* inject a fake subroutine call to cctx_init */
626	prepare_cctx (aTHX_ (coro_cctx *)arg);	990	cctx_prepare (aTHX_ (coro_cctx *)arg);
627		991
628	/* somebody will hit me for both perl_run and PL_restartop */	992	/* somebody or something will hit me for both perl_run and PL_restartop */
629	PL_restartop = PL_op;	993	PL_restartop = PL_op;
630	perl_run (PL_curinterp);	994	perl_run (PL_curinterp);
631		995
632	fputs ("FATAL: C coroutine fell over the edge of the world, aborting. Did you call exit in a coroutine?\n", stderr);	996	/*
633	abort ();	997	* If perl-run returns we assume exit() was being called or the coro
		998	* fell off the end, which seems to be the only valid (non-bug)
		999	* reason for perl_run to return. We try to exit by jumping to the
		1000	* bootstrap-time "top" top_env, as we cannot restore the "main"
		1001	* coroutine as Coro has no such concept
		1002	*/
		1003	PL_top_env = main_top_env;
		1004	JMPENV_JUMP (2); /* I do not feel well about the hardcoded 2 at all */
634	}	1005	}
635		1006
636	static coro_cctx *	1007	static coro_cctx *
637	cctx_new ()	1008	cctx_new ()
638	{	1009	{
…		…
643	++cctx_count;	1014	++cctx_count;
644		1015
645	Newz (0, cctx, 1, coro_cctx);	1016	Newz (0, cctx, 1, coro_cctx);
646		1017
647	#if HAVE_MMAP	1018	#if HAVE_MMAP
648
649	cctx->ssize = ((coro_stacksize * sizeof (long) + PAGESIZE - 1) / PAGESIZE + CORO_STACKGUARD) * PAGESIZE;	1019	cctx->ssize = ((coro_stacksize * sizeof (long) + PAGESIZE - 1) / PAGESIZE + CORO_STACKGUARD) * PAGESIZE;
650	/* mmap supposedly does allocate-on-write for us */	1020	/* mmap supposedly does allocate-on-write for us */
651	cctx->sptr = mmap (0, cctx->ssize, PROT_EXEC\|PROT_READ\|PROT_WRITE, MAP_PRIVATE\|MAP_ANONYMOUS, 0, 0);	1021	cctx->sptr = mmap (0, cctx->ssize, PROT_EXEC\|PROT_READ\|PROT_WRITE, MAP_PRIVATE\|MAP_ANONYMOUS, 0, 0);
652		1022
653	if (cctx->sptr != (void *)-1)	1023	if (cctx->sptr != (void *)-1)
…		…
655	# if CORO_STACKGUARD	1025	# if CORO_STACKGUARD
656	mprotect (cctx->sptr, CORO_STACKGUARD * PAGESIZE, PROT_NONE);	1026	mprotect (cctx->sptr, CORO_STACKGUARD * PAGESIZE, PROT_NONE);
657	# endif	1027	# endif
658	stack_start = CORO_STACKGUARD * PAGESIZE + (char *)cctx->sptr;	1028	stack_start = CORO_STACKGUARD * PAGESIZE + (char *)cctx->sptr;
659	stack_size = cctx->ssize - CORO_STACKGUARD * PAGESIZE;	1029	stack_size = cctx->ssize - CORO_STACKGUARD * PAGESIZE;
660	cctx->mapped = 1;	1030	cctx->flags \|= CC_MAPPED;
661	}	1031	}
662	else	1032	else
663	#endif	1033	#endif
664	{	1034	{
665	cctx->ssize = coro_stacksize * (long)sizeof (long);	1035	cctx->ssize = coro_stacksize * (long)sizeof (long);
…		…
674	stack_start = cctx->sptr;	1044	stack_start = cctx->sptr;
675	stack_size = cctx->ssize;	1045	stack_size = cctx->ssize;
676	}	1046	}
677		1047
678	REGISTER_STACK (cctx, (char )stack_start, (char )stack_start + stack_size);	1048	REGISTER_STACK (cctx, (char )stack_start, (char )stack_start + stack_size);
679	coro_create (&cctx->cctx, coro_run, (void *)cctx, stack_start, stack_size);	1049	coro_create (&cctx->cctx, cctx_run, (void *)cctx, stack_start, stack_size);
680		1050
681	return cctx;	1051	return cctx;
682	}	1052	}
683		1053
684	static void	1054	static void
…		…
692	#if CORO_USE_VALGRIND	1062	#if CORO_USE_VALGRIND
693	VALGRIND_STACK_DEREGISTER (cctx->valgrind_id);	1063	VALGRIND_STACK_DEREGISTER (cctx->valgrind_id);
694	#endif	1064	#endif
695		1065
696	#if HAVE_MMAP	1066	#if HAVE_MMAP
697	if (cctx->mapped)	1067	if (cctx->flags & CC_MAPPED)
698	munmap (cctx->sptr, cctx->ssize);	1068	munmap (cctx->sptr, cctx->ssize);
699	else	1069	else
700	#endif	1070	#endif
701	Safefree (cctx->sptr);	1071	Safefree (cctx->sptr);
702		1072
703	Safefree (cctx);	1073	Safefree (cctx);
704	}	1074	}
705		1075
		1076	/* wether this cctx should be destructed */
		1077	#define CCTX_EXPIRED(cctx) ((cctx)->ssize < coro_stacksize \|\| ((cctx)->flags & CC_NOREUSE))
		1078
706	static coro_cctx *	1079	static coro_cctx *
707	cctx_get (pTHX)	1080	cctx_get (pTHX)
708	{	1081	{
709	while (cctx_first)	1082	while (expect_true (cctx_first))
710	{	1083	{
711	coro_cctx *cctx = cctx_first;	1084	coro_cctx *cctx = cctx_first;
712	cctx_first = cctx->next;	1085	cctx_first = cctx->next;
713	--cctx_idle;	1086	--cctx_idle;
714		1087
715	if (cctx->ssize >= coro_stacksize)	1088	if (expect_true (!CCTX_EXPIRED (cctx)))
716	return cctx;	1089	return cctx;
717		1090
718	cctx_destroy (cctx);	1091	cctx_destroy (cctx);
719	}	1092	}
720		1093
721	PL_op = PL_op->op_next;
722	return cctx_new ();	1094	return cctx_new ();
723	}	1095	}
724		1096
725	static void	1097	static void
726	cctx_put (coro_cctx *cctx)	1098	cctx_put (coro_cctx *cctx)
727	{	1099	{
728	/* free another cctx if overlimit */	1100	/* free another cctx if overlimit */
729	if (cctx_idle >= MAX_IDLE_CCTX)	1101	if (expect_false (cctx_idle >= MAX_IDLE_CCTX))
730	{	1102	{
731	coro_cctx *first = cctx_first;	1103	coro_cctx *first = cctx_first;
732	cctx_first = first->next;	1104	cctx_first = first->next;
733	--cctx_idle;	1105	--cctx_idle;
734		1106
735	assert (!first->inuse);
736	cctx_destroy (first);	1107	cctx_destroy (first);
737	}	1108	}
738		1109
739	++cctx_idle;	1110	++cctx_idle;
740	cctx->next = cctx_first;	1111	cctx->next = cctx_first;
741	cctx_first = cctx;	1112	cctx_first = cctx;
742	}	1113	}
743		1114
744	/ coroutine switching ***************************************************/	1115	/ coroutine switching ***************************************************/
745		1116
746	/* never call directly, always through the coro_state_transfer global variable */	1117	static void
		1118	transfer_check (pTHX_ struct coro prev, struct coro next)
		1119	{
		1120	if (expect_true (prev != next))
		1121	{
		1122	if (expect_false (!(prev->flags & (CF_RUNNING \| CF_NEW))))
		1123	croak ("Coro::State::transfer called with non-running/new prev Coro::State, but can only transfer from running or new states");
		1124
		1125	if (expect_false (next->flags & CF_RUNNING))
		1126	croak ("Coro::State::transfer called with running next Coro::State, but can only transfer to inactive states");
		1127
		1128	if (expect_false (next->flags & CF_DESTROYED))
		1129	croak ("Coro::State::transfer called with destroyed next Coro::State, but can only transfer to inactive states");
		1130
		1131	if (
		1132	#if PERL_VERSION_ATLEAST (5,9,0)
		1133	expect_false (PL_parser && PL_parser->lex_state != LEX_NOTPARSING)
		1134	#else
		1135	expect_false (PL_lex_state != LEX_NOTPARSING)
		1136	#endif
		1137	)
		1138	croak ("Coro::State::transfer called while parsing, but this is not supported");
		1139	}
		1140	}
		1141
		1142	/* always use the TRANSFER macro */
747	static void NOINLINE	1143	static void NOINLINE
748	transfer (pTHX_ struct coro prev, struct coro next)	1144	transfer (pTHX_ struct coro prev, struct coro next, int force_cctx)
749	{	1145	{
750	dSTACKLEVEL;	1146	dSTACKLEVEL;
		1147	static volatile int has_throw;
751		1148
752	/* sometimes transfer is only called to set idle_sp */	1149	/* sometimes transfer is only called to set idle_sp */
753	if (!next)	1150	if (expect_false (!next))
754	{	1151	{
755	((coro_cctx *)prev)->idle_sp = STACKLEVEL;	1152	((coro_cctx *)prev)->idle_sp = STACKLEVEL;
756	assert (((coro_cctx )prev)->idle_te = PL_top_env); / just for the side-effect when asserts are enabled */	1153	assert (((coro_cctx )prev)->idle_te = PL_top_env); / just for the side-effect when asserts are enabled */
757	}	1154	}
758	else if (prev != next)	1155	else if (expect_true (prev != next))
759	{	1156	{
760	coro_cctx *prev__cctx;	1157	coro_cctx *prev__cctx;
761		1158
762	if (prev->flags & CF_NEW)	1159	if (expect_false (prev->flags & CF_NEW))
763	{	1160	{
764	/* create a new empty context */	1161	/* create a new empty context */
765	Newz (0, prev->cctx, 1, coro_cctx);	1162	Newz (0, prev->cctx, 1, coro_cctx);
766	prev->cctx->inuse = 1;
767	prev->flags &= ~CF_NEW;	1163	prev->flags &= ~CF_NEW;
768	prev->flags \|= CF_RUNNING;	1164	prev->flags \|= CF_RUNNING;
769	}	1165	}
770		1166
771	/TODO: must not croak here /
772	if (!prev->flags & CF_RUNNING)
773	croak ("Coro::State::transfer called with non-running prev Coro::State, but can only transfer from running states");
774
775	if (next->flags & CF_RUNNING)
776	croak ("Coro::State::transfer called with running next Coro::State, but can only transfer to inactive states");
777
778	if (next->flags & CF_DESTROYED)
779	croak ("Coro::State::transfer called with destroyed next Coro::State, but can only transfer to inactive states");
780
781	prev->flags &= ~CF_RUNNING;	1167	prev->flags &= ~CF_RUNNING;
782	next->flags \|= CF_RUNNING;	1168	next->flags \|= CF_RUNNING;
783		1169
784	LOCK;	1170	LOCK;
785		1171
		1172	/* first get rid of the old state */
		1173	save_perl (aTHX_ prev);
		1174
786	if (next->flags & CF_NEW)	1175	if (expect_false (next->flags & CF_NEW))
787	{	1176	{
788	/* need to start coroutine */	1177	/* need to start coroutine */
789	next->flags &= ~CF_NEW;	1178	next->flags &= ~CF_NEW;
790	/* first get rid of the old state */
791	save_perl (aTHX_ prev);
792	/* setup coroutine call */	1179	/* setup coroutine call */
793	setup_coro (aTHX_ next);	1180	coro_setup (aTHX_ next);
794	/* need a new stack */
795	assert (!next->cctx);
796	}	1181	}
797	else	1182	else
798	{
799	/* coroutine already started */
800	save_perl (aTHX_ prev);
801	load_perl (aTHX_ next);	1183	load_perl (aTHX_ next);
802	}
803		1184
804	prev__cctx = prev->cctx;	1185	prev__cctx = prev->cctx;
805		1186
806	/* possibly "free" the cctx */	1187	/* possibly "free" the cctx */
		1188	if (expect_true (
807	if (prev__cctx->idle_sp == STACKLEVEL)	1189	prev__cctx->idle_sp == STACKLEVEL
		1190	&& !(prev__cctx->flags & CC_TRACE)
		1191	&& !force_cctx
		1192	))
808	{	1193	{
809	/* I assume that STACKLEVEL is a stronger indicator than PL_top_env changes */	1194	/* I assume that STACKLEVEL is a stronger indicator than PL_top_env changes */
810	assert (("ERROR: current top_env must equal previous top_env", PL_top_env == prev__cctx->idle_te));	1195	assert (("ERROR: current top_env must equal previous top_env", PL_top_env == prev__cctx->idle_te));
811		1196
812	prev->cctx = 0;	1197	prev->cctx = 0;
813		1198
		1199	/* if the cctx is about to be destroyed we need to make sure we won't see it in cctx_get */
		1200	/* without this the next cctx_get might destroy the prev__cctx while still in use */
		1201	if (expect_false (CCTX_EXPIRED (prev__cctx)))
		1202	if (!next->cctx)
		1203	next->cctx = cctx_get (aTHX);
		1204
814	cctx_put (prev__cctx);	1205	cctx_put (prev__cctx);
815	prev__cctx->inuse = 0;
816	}	1206	}
817		1207
		1208	++next->usecount;
		1209
818	if (!next->cctx)	1210	if (expect_true (!next->cctx))
819	{
820	next->cctx = cctx_get (aTHX);	1211	next->cctx = cctx_get (aTHX);
821	assert (!next->cctx->inuse);
822	next->cctx->inuse = 1;
823	}
824		1212
		1213	has_throw = !!next->throw;
		1214
825	if (prev__cctx != next->cctx)	1215	if (expect_false (prev__cctx != next->cctx))
826	{	1216	{
827	prev__cctx->top_env = PL_top_env;	1217	prev__cctx->top_env = PL_top_env;
828	PL_top_env = next->cctx->top_env;	1218	PL_top_env = next->cctx->top_env;
829	coro_transfer (&prev__cctx->cctx, &next->cctx->cctx);	1219	coro_transfer (&prev__cctx->cctx, &next->cctx->cctx);
830	}	1220	}
831		1221
832	free_coro_mortal (aTHX);	1222	free_coro_mortal (aTHX);
833	UNLOCK;	1223	UNLOCK;
		1224
		1225	if (expect_false (has_throw))
		1226	{
		1227	struct coro *coro = SvSTATE (coro_current);
		1228
		1229	if (coro->throw)
		1230	{
		1231	SV *exception = coro->throw;
		1232	coro->throw = 0;
		1233	sv_setsv (ERRSV, exception);
		1234	croak (0);
		1235	}
		1236	}
834	}	1237	}
835	}	1238	}
836		1239
837	struct transfer_args	1240	struct transfer_args
838	{	1241	{
839	struct coro prev, next;	1242	struct coro prev, next;
840	};	1243	};
841		1244
		1245	#define TRANSFER(ta, force_cctx) transfer (aTHX_ (ta).prev, (ta).next, (force_cctx))
842	#define TRANSFER(ta) transfer (aTHX_ (ta).prev, (ta).next)	1246	#define TRANSFER_CHECK(ta) transfer_check (aTHX_ (ta).prev, (ta).next)
843		1247
844	/ high level stuff ******************************************************/	1248	/ high level stuff ******************************************************/
845		1249
846	static int	1250	static int
847	coro_state_destroy (pTHX_ struct coro *coro)	1251	coro_state_destroy (pTHX_ struct coro *coro)
…		…
864		1268
865	if (coro->mainstack && coro->mainstack != main_mainstack)	1269	if (coro->mainstack && coro->mainstack != main_mainstack)
866	{	1270	{
867	struct coro temp;	1271	struct coro temp;
868		1272
869	assert (!(coro->flags & CF_RUNNING));
870
871	Zero (&temp, 1, struct coro);
872	temp.save = CORO_SAVE_DEF;
873
874	if (coro->flags & CF_RUNNING)	1273	if (coro->flags & CF_RUNNING)
875	croak ("FATAL: tried to destroy currently running coroutine");	1274	croak ("FATAL: tried to destroy currently running coroutine");
876		1275
877	save_perl (aTHX_ &temp);	1276	save_perl (aTHX_ &temp);
878	load_perl (aTHX_ coro);	1277	load_perl (aTHX_ coro);
879		1278
880	coro_destroy_stacks (aTHX);	1279	coro_destroy (aTHX_ coro);
881		1280
882	load_perl (aTHX_ &temp); /* this will get rid of defsv etc.. */	1281	load_perl (aTHX_ &temp);
883		1282
884	coro->mainstack = 0;	1283	coro->slot = 0;
885	}	1284	}
886		1285
887	cctx_destroy (coro->cctx);	1286	cctx_destroy (coro->cctx);
888	SvREFCNT_dec (coro->args);	1287	SvREFCNT_dec (coro->args);
889		1288
		1289	if (coro->next) coro->next->prev = coro->prev;
		1290	if (coro->prev) coro->prev->next = coro->next;
		1291	if (coro == coro_first) coro_first = coro->next;
		1292
890	return 1;	1293	return 1;
891	}	1294	}
892		1295
893	static int	1296	static int
894	coro_state_free (pTHX_ SV sv, MAGIC mg)	1297	coro_state_free (pTHX_ SV sv, MAGIC mg)
895	{	1298	{
896	struct coro coro = (struct coro )mg->mg_ptr;	1299	struct coro coro = (struct coro )mg->mg_ptr;
897	mg->mg_ptr = 0;	1300	mg->mg_ptr = 0;
		1301
		1302	coro->hv = 0;
898		1303
899	if (--coro->refcnt < 0)	1304	if (--coro->refcnt < 0)
900	{	1305	{
901	coro_state_destroy (aTHX_ coro);	1306	coro_state_destroy (aTHX_ coro);
902	Safefree (coro);	1307	Safefree (coro);
…		…
924	#else	1329	#else
925	# define MGf_DUP 0	1330	# define MGf_DUP 0
926	#endif	1331	#endif
927	};	1332	};
928		1333
929	static struct coro *
930	SvSTATE_ (pTHX_ SV *coro)
931	{
932	HV *stash;
933	MAGIC *mg;
934
935	if (SvROK (coro))
936	coro = SvRV (coro);
937
938	stash = SvSTASH (coro);
939	if (stash != coro_stash && stash != coro_state_stash)
940	{
941	/* very slow, but rare, check */
942	if (!sv_derived_from (sv_2mortal (newRV_inc (coro)), "Coro::State"))
943	croak ("Coro::State object required");
944	}
945
946	mg = CORO_MAGIC (coro);
947	return (struct coro *)mg->mg_ptr;
948	}
949
950	#define SvSTATE(sv) SvSTATE_ (aTHX_ (sv))
951
952	static void	1334	static void
953	prepare_transfer (pTHX_ struct transfer_args ta, SV prev_sv, SV *next_sv)	1335	prepare_transfer (pTHX_ struct transfer_args ta, SV prev_sv, SV *next_sv)
954	{	1336	{
955	ta->prev = SvSTATE (prev_sv);	1337	ta->prev = SvSTATE (prev_sv);
956	ta->next = SvSTATE (next_sv);	1338	ta->next = SvSTATE (next_sv);
		1339	TRANSFER_CHECK (*ta);
957	}	1340	}
958		1341
959	static void	1342	static void
960	api_transfer (SV prev_sv, SV next_sv)	1343	api_transfer (SV prev_sv, SV next_sv)
961	{	1344	{
962	dTHX;	1345	dTHX;
963	struct transfer_args ta;	1346	struct transfer_args ta;
964		1347
965	prepare_transfer (aTHX_ &ta, prev_sv, next_sv);	1348	prepare_transfer (aTHX_ &ta, prev_sv, next_sv);
966	TRANSFER (ta);	1349	TRANSFER (ta, 1);
967	}
968
969	static int
970	api_save (SV *coro_sv, int new_save)
971	{
972	dTHX;
973	struct coro *coro = SvSTATE (coro_sv);
974	int old_save = coro->save;
975
976	if (new_save >= 0)
977	coro->save = new_save;
978
979	return old_save;
980	}	1350	}
981		1351
982	/ Coro ******************************************************************/	1352	/ Coro ******************************************************************/
983		1353
984	static void	1354	static void
…		…
986	{	1356	{
987	av_push (coro_ready [SvSTATE (coro_sv)->prio - PRIO_MIN], coro_sv);	1357	av_push (coro_ready [SvSTATE (coro_sv)->prio - PRIO_MIN], coro_sv);
988	}	1358	}
989		1359
990	static SV *	1360	static SV *
991	coro_deq (pTHX_ int min_prio)	1361	coro_deq (pTHX)
992	{	1362	{
993	int prio = PRIO_MAX - PRIO_MIN;	1363	int prio;
994		1364
995	min_prio -= PRIO_MIN;
996	if (min_prio < 0)
997	min_prio = 0;
998
999	for (prio = PRIO_MAX - PRIO_MIN + 1; --prio >= min_prio; )	1365	for (prio = PRIO_MAX - PRIO_MIN + 1; --prio >= 0; )
1000	if (AvFILLp (coro_ready [prio]) >= 0)	1366	if (AvFILLp (coro_ready [prio]) >= 0)
1001	return av_shift (coro_ready [prio]);	1367	return av_shift (coro_ready [prio]);
1002		1368
1003	return 0;	1369	return 0;
1004	}	1370	}
…		…
1040	SV prev_sv, next_sv;	1406	SV prev_sv, next_sv;
1041		1407
1042	for (;;)	1408	for (;;)
1043	{	1409	{
1044	LOCK;	1410	LOCK;
1045	next_sv = coro_deq (aTHX_ PRIO_MIN);	1411	next_sv = coro_deq (aTHX);
1046		1412
1047	/* nothing to schedule: call the idle handler */	1413	/* nothing to schedule: call the idle handler */
1048	if (!next_sv)	1414	if (expect_false (!next_sv))
1049	{	1415	{
1050	dSP;	1416	dSP;
1051	UNLOCK;	1417	UNLOCK;
1052		1418
1053	ENTER;	1419	ENTER;
1054	SAVETMPS;	1420	SAVETMPS;
1055		1421
1056	PUSHMARK (SP);	1422	PUSHMARK (SP);
1057	PUTBACK;	1423	PUTBACK;
1058	call_sv (get_sv ("Coro::idle", FALSE), G_DISCARD);	1424	call_sv (get_sv ("Coro::idle", FALSE), G_DISCARD);
		1425	SPAGAIN;
1059		1426
1060	FREETMPS;	1427	FREETMPS;
1061	LEAVE;	1428	LEAVE;
1062	continue;	1429	continue;
1063	}	1430	}
1064		1431
1065	ta->next = SvSTATE (next_sv);	1432	ta->next = SvSTATE (next_sv);
1066		1433
1067	/* cannot transfer to destroyed coros, skip and look for next */	1434	/* cannot transfer to destroyed coros, skip and look for next */
1068	if (ta->next->flags & CF_DESTROYED)	1435	if (expect_false (ta->next->flags & CF_DESTROYED))
1069	{	1436	{
1070	UNLOCK;	1437	UNLOCK;
1071	SvREFCNT_dec (next_sv);	1438	SvREFCNT_dec (next_sv);
1072	/* coro_nready is already taken care of by destroy */	1439	/* coro_nready is already taken care of by destroy */
1073	continue;	1440	continue;
…		…
1078	break;	1445	break;
1079	}	1446	}
1080		1447
1081	/* free this only after the transfer */	1448	/* free this only after the transfer */
1082	prev_sv = SvRV (coro_current);	1449	prev_sv = SvRV (coro_current);
1083	SvRV_set (coro_current, next_sv);
1084	ta->prev = SvSTATE (prev_sv);	1450	ta->prev = SvSTATE (prev_sv);
1085		1451	TRANSFER_CHECK (*ta);
1086	assert (ta->next->flags & CF_READY);	1452	assert (ta->next->flags & CF_READY);
1087	ta->next->flags &= ~CF_READY;	1453	ta->next->flags &= ~CF_READY;
		1454	SvRV_set (coro_current, next_sv);
1088		1455
1089	LOCK;	1456	LOCK;
1090	free_coro_mortal (aTHX);	1457	free_coro_mortal (aTHX);
1091	coro_mortal = prev_sv;	1458	coro_mortal = prev_sv;
1092	UNLOCK;	1459	UNLOCK;
…		…
1118	{	1485	{
1119	dTHX;	1486	dTHX;
1120	struct transfer_args ta;	1487	struct transfer_args ta;
1121		1488
1122	prepare_schedule (aTHX_ &ta);	1489	prepare_schedule (aTHX_ &ta);
1123	TRANSFER (ta);	1490	TRANSFER (ta, 1);
1124	}	1491	}
1125		1492
1126	static int	1493	static int
1127	api_cede (void)	1494	api_cede (void)
1128	{	1495	{
1129	dTHX;	1496	dTHX;
1130	struct transfer_args ta;	1497	struct transfer_args ta;
1131		1498
1132	prepare_cede (aTHX_ &ta);	1499	prepare_cede (aTHX_ &ta);
1133		1500
1134	if (ta.prev != ta.next)	1501	if (expect_true (ta.prev != ta.next))
1135	{	1502	{
1136	TRANSFER (ta);	1503	TRANSFER (ta, 1);
1137	return 1;	1504	return 1;
1138	}	1505	}
1139	else	1506	else
1140	return 0;	1507	return 0;
1141	}	1508	}
…		…
1146	dTHX;	1513	dTHX;
1147	struct transfer_args ta;	1514	struct transfer_args ta;
1148		1515
1149	if (prepare_cede_notself (aTHX_ &ta))	1516	if (prepare_cede_notself (aTHX_ &ta))
1150	{	1517	{
1151	TRANSFER (ta);	1518	TRANSFER (ta, 1);
1152	return 1;	1519	return 1;
1153	}	1520	}
1154	else	1521	else
1155	return 0;	1522	return 0;
1156	}	1523	}
1157		1524
		1525	static void
		1526	api_trace (SV *coro_sv, int flags)
		1527	{
		1528	dTHX;
		1529	struct coro *coro = SvSTATE (coro_sv);
		1530
		1531	if (flags & CC_TRACE)
		1532	{
		1533	if (!coro->cctx)
		1534	coro->cctx = cctx_new ();
		1535	else if (!(coro->cctx->flags & CC_TRACE))
		1536	croak ("cannot enable tracing on coroutine with custom stack");
		1537
		1538	coro->cctx->flags \|= CC_NOREUSE \| (flags & (CC_TRACE \| CC_TRACE_ALL));
		1539	}
		1540	else if (coro->cctx && coro->cctx->flags & CC_TRACE)
		1541	{
		1542	coro->cctx->flags &= ~(CC_TRACE \| CC_TRACE_ALL);
		1543
		1544	if (coro->flags & CF_RUNNING)
		1545	PL_runops = RUNOPS_DEFAULT;
		1546	else
		1547	coro->slot->runops = RUNOPS_DEFAULT;
		1548	}
		1549	}
		1550
1158	MODULE = Coro::State PACKAGE = Coro::State	1551	MODULE = Coro::State PACKAGE = Coro::State PREFIX = api_
1159		1552
1160	PROTOTYPES: DISABLE	1553	PROTOTYPES: DISABLE
1161		1554
1162	BOOT:	1555	BOOT:
1163	{	1556	{
1164	#ifdef USE_ITHREADS	1557	#ifdef USE_ITHREADS
1165	MUTEX_INIT (&coro_mutex);	1558	MUTEX_INIT (&coro_mutex);
1166	#endif	1559	#endif
1167	BOOT_PAGESIZE;	1560	BOOT_PAGESIZE;
1168		1561
		1562	irsgv = gv_fetchpv ("/" , GV_ADD\|GV_NOTQUAL, SVt_PV);
		1563	stdoutgv = gv_fetchpv ("STDOUT", GV_ADD\|GV_NOTQUAL, SVt_PVIO);
		1564
		1565	orig_sigelem_get = PL_vtbl_sigelem.svt_get;
		1566	PL_vtbl_sigelem.svt_get = coro_sigelem_get;
		1567	orig_sigelem_set = PL_vtbl_sigelem.svt_set;
		1568	PL_vtbl_sigelem.svt_set = coro_sigelem_set;
		1569
		1570	hv_sig = coro_get_hv (aTHX_ "SIG", TRUE);
		1571	rv_diehook = newRV_inc ((SV *)gv_fetchpv ("Coro::State::diehook" , 0, SVt_PVCV));
		1572	rv_warnhook = newRV_inc ((SV *)gv_fetchpv ("Coro::State::warnhook", 0, SVt_PVCV));
		1573
1169	coro_state_stash = gv_stashpv ("Coro::State", TRUE);	1574	coro_state_stash = gv_stashpv ("Coro::State", TRUE);
1170		1575
1171	newCONSTSUB (coro_state_stash, "SAVE_DEFAV", newSViv (CORO_SAVE_DEFAV));	1576	newCONSTSUB (coro_state_stash, "CC_TRACE" , newSViv (CC_TRACE));
1172	newCONSTSUB (coro_state_stash, "SAVE_DEFSV", newSViv (CORO_SAVE_DEFSV));	1577	newCONSTSUB (coro_state_stash, "CC_TRACE_SUB" , newSViv (CC_TRACE_SUB));
1173	newCONSTSUB (coro_state_stash, "SAVE_ERRSV", newSViv (CORO_SAVE_ERRSV));
1174	newCONSTSUB (coro_state_stash, "SAVE_IRSSV", newSViv (CORO_SAVE_IRSSV));
1175	newCONSTSUB (coro_state_stash, "SAVE_DEFFH", newSViv (CORO_SAVE_DEFFH));
1176	newCONSTSUB (coro_state_stash, "SAVE_DEF", newSViv (CORO_SAVE_DEF));	1578	newCONSTSUB (coro_state_stash, "CC_TRACE_LINE", newSViv (CC_TRACE_LINE));
1177	newCONSTSUB (coro_state_stash, "SAVE_ALL", newSViv (CORO_SAVE_ALL));	1579	newCONSTSUB (coro_state_stash, "CC_TRACE_ALL" , newSViv (CC_TRACE_ALL));
1178		1580
1179	main_mainstack = PL_mainstack;	1581	main_mainstack = PL_mainstack;
		1582	main_top_env = PL_top_env;
		1583
		1584	while (main_top_env->je_prev)
		1585	main_top_env = main_top_env->je_prev;
1180		1586
1181	coroapi.ver = CORO_API_VERSION;	1587	coroapi.ver = CORO_API_VERSION;
		1588	coroapi.rev = CORO_API_REVISION;
1182	coroapi.transfer = api_transfer;	1589	coroapi.transfer = api_transfer;
1183		1590
1184	assert (("PRIO_NORMAL must be 0", !PRIO_NORMAL));	1591	assert (("PRIO_NORMAL must be 0", !PRIO_NORMAL));
1185	}	1592	}
1186		1593
1187	SV *	1594	SV *
1188	new (char *klass, ...)	1595	new (char *klass, ...)
1189	CODE:	1596	CODE:
1190	{	1597	{
1191	struct coro *coro;	1598	struct coro *coro;
		1599	MAGIC *mg;
1192	HV *hv;	1600	HV *hv;
1193	int i;	1601	int i;
1194		1602
1195	Newz (0, coro, 1, struct coro);	1603	Newz (0, coro, 1, struct coro);
1196	coro->args = newAV ();	1604	coro->args = newAV ();
1197	coro->save = CORO_SAVE_DEF;
1198	coro->flags = CF_NEW;	1605	coro->flags = CF_NEW;
1199		1606
		1607	if (coro_first) coro_first->prev = coro;
		1608	coro->next = coro_first;
		1609	coro_first = coro;
		1610
1200	hv = newHV ();	1611	coro->hv = hv = newHV ();
1201	sv_magicext ((SV )hv, 0, PERL_MAGIC_ext, &coro_state_vtbl, (char )coro, 0)->mg_flags \|= MGf_DUP;	1612	mg = sv_magicext ((SV )hv, 0, CORO_MAGIC_type_state, &coro_state_vtbl, (char )coro, 0);
		1613	mg->mg_flags \|= MGf_DUP;
1202	RETVAL = sv_bless (newRV_noinc ((SV *)hv), gv_stashpv (klass, 1));	1614	RETVAL = sv_bless (newRV_noinc ((SV *)hv), gv_stashpv (klass, 1));
1203		1615
		1616	av_extend (coro->args, items - 1);
1204	for (i = 1; i < items; i++)	1617	for (i = 1; i < items; i++)
1205	av_push (coro->args, newSVsv (ST (i)));	1618	av_push (coro->args, newSVsv (ST (i)));
1206	}	1619	}
1207	OUTPUT:	1620	OUTPUT:
1208	RETVAL	1621	RETVAL
1209		1622
1210	int	1623	# these not obviously related functions are all rolled into the same xs
1211	save (SV *coro, int new_save = -1)	1624	# function to increase chances that they all will call transfer with the same
1212	CODE:	1625	# stack offset
1213	RETVAL = api_save (coro, new_save);
1214	OUTPUT:
1215	RETVAL
1216
1217	int
1218	save_also (SV *coro_sv, int save_also)
1219	CODE:
1220	{
1221	struct coro *coro = SvSTATE (coro_sv);
1222	RETVAL = coro->save;
1223	coro->save \|= save_also;
1224	}
1225	OUTPUT:
1226	RETVAL
1227
1228	void	1626	void
1229	_set_stacklevel (...)	1627	_set_stacklevel (...)
1230	ALIAS:	1628	ALIAS:
1231	Coro::State::transfer = 1	1629	Coro::State::transfer = 1
1232	Coro::schedule = 2	1630	Coro::schedule = 2
…		…
1234	Coro::cede_notself = 4	1632	Coro::cede_notself = 4
1235	CODE:	1633	CODE:
1236	{	1634	{
1237	struct transfer_args ta;	1635	struct transfer_args ta;
1238		1636
		1637	PUTBACK;
1239	switch (ix)	1638	switch (ix)
1240	{	1639	{
1241	case 0:	1640	case 0:
1242	ta.prev = (struct coro )INT2PTR (coro_cctx , SvIV (ST (0)));	1641	ta.prev = (struct coro )INT2PTR (coro_cctx , SvIV (ST (0)));
1243	ta.next = 0;	1642	ta.next = 0;
…		…
1262	if (!prepare_cede_notself (aTHX_ &ta))	1661	if (!prepare_cede_notself (aTHX_ &ta))
1263	XSRETURN_EMPTY;	1662	XSRETURN_EMPTY;
1264		1663
1265	break;	1664	break;
1266	}	1665	}
		1666	SPAGAIN;
1267		1667
1268	BARRIER;	1668	BARRIER;
		1669	PUTBACK;
1269	TRANSFER (ta);	1670	TRANSFER (ta, 0);
1270		1671	SPAGAIN; /* might be the sp of a different coroutine now */
1271	if (GIMME_V != G_VOID && ta.next != ta.prev)	1672	/* be extra careful not to ever do anything after TRANSFER */
1272	XSRETURN_YES;
1273	}	1673	}
1274		1674
1275	bool	1675	bool
1276	_destroy (SV *coro_sv)	1676	_destroy (SV *coro_sv)
1277	CODE:	1677	CODE:
…		…
1307	CODE:	1707	CODE:
1308	RETVAL = cctx_idle;	1708	RETVAL = cctx_idle;
1309	OUTPUT:	1709	OUTPUT:
1310	RETVAL	1710	RETVAL
1311		1711
		1712	void
		1713	list ()
		1714	PPCODE:
		1715	{
		1716	struct coro *coro;
		1717	for (coro = coro_first; coro; coro = coro->next)
		1718	if (coro->hv)
		1719	XPUSHs (sv_2mortal (newRV_inc ((SV *)coro->hv)));
		1720	}
		1721
		1722	void
		1723	call (Coro::State coro, SV *coderef)
		1724	ALIAS:
		1725	eval = 1
		1726	CODE:
		1727	{
		1728	if (coro->mainstack)
		1729	{
		1730	struct coro temp;
		1731
		1732	if (!(coro->flags & CF_RUNNING))
		1733	{
		1734	PUTBACK;
		1735	save_perl (aTHX_ &temp);
		1736	load_perl (aTHX_ coro);
		1737	}
		1738
		1739	{
		1740	dSP;
		1741	ENTER;
		1742	SAVETMPS;
		1743	PUTBACK;
		1744	PUSHSTACK;
		1745	PUSHMARK (SP);
		1746
		1747	if (ix)
		1748	eval_sv (coderef, 0);
		1749	else
		1750	call_sv (coderef, G_KEEPERR \| G_EVAL \| G_VOID \| G_DISCARD);
		1751
		1752	POPSTACK;
		1753	SPAGAIN;
		1754	FREETMPS;
		1755	LEAVE;
		1756	PUTBACK;
		1757	}
		1758
		1759	if (!(coro->flags & CF_RUNNING))
		1760	{
		1761	save_perl (aTHX_ coro);
		1762	load_perl (aTHX_ &temp);
		1763	SPAGAIN;
		1764	}
		1765	}
		1766	}
		1767
		1768	SV *
		1769	is_ready (Coro::State coro)
		1770	PROTOTYPE: $
		1771	ALIAS:
		1772	is_ready = CF_READY
		1773	is_running = CF_RUNNING
		1774	is_new = CF_NEW
		1775	is_destroyed = CF_DESTROYED
		1776	CODE:
		1777	RETVAL = boolSV (coro->flags & ix);
		1778	OUTPUT:
		1779	RETVAL
		1780
		1781	void
		1782	api_trace (SV *coro, int flags = CC_TRACE \| CC_TRACE_SUB)
		1783
		1784	SV *
		1785	has_stack (Coro::State coro)
		1786	PROTOTYPE: $
		1787	CODE:
		1788	RETVAL = boolSV (!!coro->cctx);
		1789	OUTPUT:
		1790	RETVAL
		1791
		1792	int
		1793	is_traced (Coro::State coro)
		1794	PROTOTYPE: $
		1795	CODE:
		1796	RETVAL = (coro->cctx ? coro->cctx->flags : 0) & CC_TRACE_ALL;
		1797	OUTPUT:
		1798	RETVAL
		1799
		1800	IV
		1801	rss (Coro::State coro)
		1802	PROTOTYPE: $
		1803	ALIAS:
		1804	usecount = 1
		1805	CODE:
		1806	switch (ix)
		1807	{
		1808	case 0: RETVAL = coro_rss (aTHX_ coro); break;
		1809	case 1: RETVAL = coro->usecount; break;
		1810	}
		1811	OUTPUT:
		1812	RETVAL
		1813
		1814	void
		1815	force_cctx ()
		1816	CODE:
		1817	struct coro *coro = SvSTATE (coro_current);
		1818	coro->cctx->idle_sp = 0;
		1819
1312	MODULE = Coro::State PACKAGE = Coro	1820	MODULE = Coro::State PACKAGE = Coro
1313		1821
1314	BOOT:	1822	BOOT:
1315	{	1823	{
1316	int i;	1824	int i;
1317		1825
		1826	sv_pool_rss = coro_get_sv (aTHX_ "Coro::POOL_RSS" , TRUE);
		1827	sv_pool_size = coro_get_sv (aTHX_ "Coro::POOL_SIZE" , TRUE);
		1828	av_async_pool = coro_get_av (aTHX_ "Coro::async_pool", TRUE);
		1829
		1830	coro_current = coro_get_sv (aTHX_ "Coro::current", FALSE);
		1831	SvREADONLY_on (coro_current);
		1832
1318	coro_stash = gv_stashpv ("Coro", TRUE);	1833	coro_stash = gv_stashpv ("Coro", TRUE);
1319		1834
1320	newCONSTSUB (coro_stash, "PRIO_MAX", newSViv (PRIO_MAX));	1835	newCONSTSUB (coro_stash, "PRIO_MAX", newSViv (PRIO_MAX));
1321	newCONSTSUB (coro_stash, "PRIO_HIGH", newSViv (PRIO_HIGH));	1836	newCONSTSUB (coro_stash, "PRIO_HIGH", newSViv (PRIO_HIGH));
1322	newCONSTSUB (coro_stash, "PRIO_NORMAL", newSViv (PRIO_NORMAL));	1837	newCONSTSUB (coro_stash, "PRIO_NORMAL", newSViv (PRIO_NORMAL));
1323	newCONSTSUB (coro_stash, "PRIO_LOW", newSViv (PRIO_LOW));	1838	newCONSTSUB (coro_stash, "PRIO_LOW", newSViv (PRIO_LOW));
1324	newCONSTSUB (coro_stash, "PRIO_IDLE", newSViv (PRIO_IDLE));	1839	newCONSTSUB (coro_stash, "PRIO_IDLE", newSViv (PRIO_IDLE));
1325	newCONSTSUB (coro_stash, "PRIO_MIN", newSViv (PRIO_MIN));	1840	newCONSTSUB (coro_stash, "PRIO_MIN", newSViv (PRIO_MIN));
1326		1841
1327	coro_current = get_sv ("Coro::current", FALSE);
1328	SvREADONLY_on (coro_current);
1329
1330	for (i = PRIO_MAX - PRIO_MIN + 1; i--; )	1842	for (i = PRIO_MAX - PRIO_MIN + 1; i--; )
1331	coro_ready[i] = newAV ();	1843	coro_ready[i] = newAV ();
1332		1844
1333	{	1845	{
1334	SV *sv = perl_get_sv("Coro::API", 1);	1846	SV *sv = perl_get_sv ("Coro::API", TRUE);
		1847	perl_get_sv ("Coro::API", TRUE); /* silence 5.10 warning */
1335		1848
1336	coroapi.schedule = api_schedule;	1849	coroapi.schedule = api_schedule;
1337	coroapi.save = api_save;
1338	coroapi.cede = api_cede;	1850	coroapi.cede = api_cede;
1339	coroapi.cede_notself = api_cede_notself;	1851	coroapi.cede_notself = api_cede_notself;
1340	coroapi.ready = api_ready;	1852	coroapi.ready = api_ready;
1341	coroapi.is_ready = api_is_ready;	1853	coroapi.is_ready = api_is_ready;
1342	coroapi.nready = &coro_nready;	1854	coroapi.nready = &coro_nready;
…		…
1383	CODE:	1895	CODE:
1384	RETVAL = boolSV (api_ready (self));	1896	RETVAL = boolSV (api_ready (self));
1385	OUTPUT:	1897	OUTPUT:
1386	RETVAL	1898	RETVAL
1387		1899
1388	SV *
1389	is_ready (SV *self)
1390	PROTOTYPE: $
1391	CODE:
1392	RETVAL = boolSV (api_is_ready (self));
1393	OUTPUT:
1394	RETVAL
1395
1396	int	1900	int
1397	nready (...)	1901	nready (...)
1398	PROTOTYPE:	1902	PROTOTYPE:
1399	CODE:	1903	CODE:
1400	RETVAL = coro_nready;	1904	RETVAL = coro_nready;
1401	OUTPUT:	1905	OUTPUT:
1402	RETVAL	1906	RETVAL
1403		1907
		1908	void
		1909	throw (Coro::State self, SV *throw = &PL_sv_undef)
		1910	PROTOTYPE: $;$
		1911	CODE:
		1912	SvREFCNT_dec (self->throw);
		1913	self->throw = SvOK (throw) ? newSVsv (throw) : 0;
		1914
		1915	void
		1916	swap_defsv (Coro::State self)
		1917	PROTOTYPE: $
		1918	ALIAS:
		1919	swap_defav = 1
		1920	CODE:
		1921	if (!self->slot)
		1922	croak ("cannot swap state with coroutine that has no saved state");
		1923	else
		1924	{
		1925	SV src = ix ? (SV )&GvAV (PL_defgv) : &GvSV (PL_defgv);
		1926	SV dst = ix ? (SV )&self->slot->defav : (SV **)&self->slot->defsv;
		1927
		1928	SV tmp = src; src = dst; *dst = tmp;
		1929	}
		1930
		1931	# for async_pool speedup
		1932	void
		1933	_pool_1 (SV *cb)
		1934	CODE:
		1935	{
		1936	struct coro *coro = SvSTATE (coro_current);
		1937	HV hv = (HV )SvRV (coro_current);
		1938	AV *defav = GvAV (PL_defgv);
		1939	SV *invoke = hv_delete (hv, "_invoke", sizeof ("_invoke") - 1, 0);
		1940	AV *invoke_av;
		1941	int i, len;
		1942
		1943	if (!invoke)
		1944	{
		1945	SvREFCNT_dec (PL_diehook); PL_diehook = 0;
		1946	croak ("\3async_pool terminate\2\n");
		1947	}
		1948
		1949	SvREFCNT_dec (coro->saved_deffh);
		1950	coro->saved_deffh = SvREFCNT_inc ((SV *)PL_defoutgv);
		1951
		1952	hv_store (hv, "desc", sizeof ("desc") - 1,
		1953	newSVpvn ("[async_pool]", sizeof ("[async_pool]") - 1), 0);
		1954
		1955	invoke_av = (AV *)SvRV (invoke);
		1956	len = av_len (invoke_av);
		1957
		1958	sv_setsv (cb, AvARRAY (invoke_av)[0]);
		1959
		1960	if (len > 0)
		1961	{
		1962	av_fill (defav, len - 1);
		1963	for (i = 0; i < len; ++i)
		1964	av_store (defav, i, SvREFCNT_inc (AvARRAY (invoke_av)[i + 1]));
		1965	}
		1966
		1967	SvREFCNT_dec (invoke);
		1968	}
		1969
		1970	void
		1971	_pool_2 (SV *cb)
		1972	CODE:
		1973	{
		1974	struct coro *coro = SvSTATE (coro_current);
		1975
		1976	sv_setsv (cb, &PL_sv_undef);
		1977
		1978	SvREFCNT_dec ((SV )PL_defoutgv); PL_defoutgv = (GV )coro->saved_deffh;
		1979	coro->saved_deffh = 0;
		1980
		1981	if (coro_rss (aTHX_ coro) > SvIV (sv_pool_rss)
		1982	\|\| av_len (av_async_pool) + 1 >= SvIV (sv_pool_size))
		1983	{
		1984	SvREFCNT_dec (PL_diehook); PL_diehook = 0;
		1985	croak ("\3async_pool terminate\2\n");
		1986	}
		1987
		1988	av_clear (GvAV (PL_defgv));
		1989	hv_store ((HV *)SvRV (coro_current), "desc", sizeof ("desc") - 1,
		1990	newSVpvn ("[async_pool idle]", sizeof ("[async_pool idle]") - 1), 0);
		1991
		1992	coro->prio = 0;
		1993
		1994	if (coro->cctx && (coro->cctx->flags & CC_TRACE))
		1995	api_trace (coro_current, 0);
		1996
		1997	av_push (av_async_pool, newSVsv (coro_current));
		1998	}
		1999
		2000
1404	MODULE = Coro::State PACKAGE = Coro::AIO	2001	MODULE = Coro::State PACKAGE = Coro::AIO
1405		2002
1406	SV *	2003	SV *
1407	_get_state ()	2004	_get_state ()
1408	CODE:	2005	CODE:

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Comparing Coro/Coro/State.xs (file contents): Revision 1.147 by root, Mon Mar 19 15:50:48 2007 UTC vs. Revision 1.227 by root, Sat Apr 5 22:29:54 2008 UTC

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Comparing Coro/Coro/State.xs (file contents):
Revision 1.147 by root, Mon Mar 19 15:50:48 2007 UTC vs.
Revision 1.227 by root, Sat Apr 5 22:29:54 2008 UTC