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/cvs/Coro/Coro/State.xs

Comparing Coro/Coro/State.xs (file contents):
Revision 1.152 by root, Thu Sep 20 12:02:25 2007 UTC vs.
Revision 1.212 by root, Wed Oct 10 04:21:33 2007 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
…		…
75	/* 5.8.7 */	77	/* 5.8.7 */
76	#ifndef SvRV_set	78	#ifndef SvRV_set
77	# define SvRV_set(s,v) SvRV(s) = (v)	79	# define SvRV_set(s,v) SvRV(s) = (v)
78	#endif	80	#endif
79		81
		82	/* 5.8.8 */
		83	#ifndef GV_NOTQUAL
		84	# define GV_NOTQUAL 0
		85	#endif
		86	#ifndef newSV
		87	# define newSV(l) NEWSV(0,l)
		88	#endif
		89
80	#if !__i386 && !__x86_64 && !__powerpc && !__m68k && !__alpha && !__mips && !__sparc64	90	#if !__i386 && !__x86_64 && !__powerpc && !__m68k && !__alpha && !__mips && !__sparc64
81	# undef CORO_STACKGUARD	91	# undef CORO_STACKGUARD
82	#endif	92	#endif
83		93
84	#ifndef CORO_STACKGUARD	94	#ifndef CORO_STACKGUARD
…		…
88	/* prefer perl internal functions over our own? */	98	/* prefer perl internal functions over our own? */
89	#ifndef CORO_PREFER_PERL_FUNCTIONS	99	#ifndef CORO_PREFER_PERL_FUNCTIONS
90	# define CORO_PREFER_PERL_FUNCTIONS 0	100	# define CORO_PREFER_PERL_FUNCTIONS 0
91	#endif	101	#endif
92		102
93	/* The next macro should declare a variable stacklevel that contains and approximation	103	/* 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	104	* portable way as possible. */
95	* and should be unique. */
96	#define dSTACKLEVEL int stacklevel	105	#define dSTACKLEVEL volatile char stacklevel
97	#define STACKLEVEL ((void *)&stacklevel)	106	#define STACKLEVEL ((void *)&stacklevel)
98		107
99	#define IN_DESTRUCT (PL_main_cv == Nullcv)	108	#define IN_DESTRUCT (PL_main_cv == Nullcv)
100		109
101	#if __GNUC__ >= 3	110	#if __GNUC__ >= 3
102	# define attribute(x) __attribute__(x)	111	# define attribute(x) __attribute__(x)
103	# define BARRIER __asm__ __volatile__ ("" : : : "memory")	112	# define BARRIER __asm__ __volatile__ ("" : : : "memory")
		113	# define expect(expr,value) __builtin_expect ((expr),(value))
104	#else	114	#else
105	# define attribute(x)	115	# define attribute(x)
106	# define BARRIER	116	# define BARRIER
		117	# define expect(expr,value) (expr)
107	#endif	118	#endif
		119
		120	#define expect_false(expr) expect ((expr) != 0, 0)
		121	#define expect_true(expr) expect ((expr) != 0, 1)
108		122
109	#define NOINLINE attribute ((noinline))	123	#define NOINLINE attribute ((noinline))
110		124
111	#include "CoroAPI.h"	125	#include "CoroAPI.h"
112		126
…		…
133	static AV *main_mainstack; /* used to differentiate between $main and others */	147	static AV *main_mainstack; /* used to differentiate between $main and others */
134	static JMPENV *main_top_env;	148	static JMPENV *main_top_env;
135	static HV *coro_state_stash, *coro_stash;	149	static HV *coro_state_stash, *coro_stash;
136	static SV *coro_mortal; /* will be freed after next transfer */	150	static SV *coro_mortal; /* will be freed after next transfer */
137		151
		152	static GV *irsgv; /* $/ */
		153	static GV *stdoutgv; /* *STDOUT */
		154
		155	static HV *hv_sig; /* %SIG */
		156	static SV *sv_diehook;
		157	static SV *sv_warnhook;
		158
		159	/* async_pool helper stuff */
		160	static SV *sv_pool_rss;
		161	static SV *sv_pool_size;
		162	static AV *av_async_pool;
		163
138	static struct coro_cctx *cctx_first;	164	static struct coro_cctx *cctx_first;
139	static int cctx_count, cctx_idle;	165	static int cctx_count, cctx_idle;
		166
		167	enum {
		168	CC_MAPPED = 0x01,
		169	CC_NOREUSE = 0x02, /* throw this away after tracing */
		170	CC_TRACE = 0x04,
		171	CC_TRACE_SUB = 0x08, /* trace sub calls */
		172	CC_TRACE_LINE = 0x10, /* trace each statement */
		173	CC_TRACE_ALL = CC_TRACE_SUB | CC_TRACE_LINE,
		174	};
140		175
141	/* this is a structure representing a c-level coroutine */	176	/* this is a structure representing a c-level coroutine */
142	typedef struct coro_cctx {	177	typedef struct coro_cctx {
143	struct coro_cctx *next;	178	struct coro_cctx *next;
144		179
…		…
153	coro_context cctx;	188	coro_context cctx;
154		189
155	#if CORO_USE_VALGRIND	190	#if CORO_USE_VALGRIND
156	int valgrind_id;	191	int valgrind_id;
157	#endif	192	#endif
158	char inuse, mapped;	193	unsigned char flags;
159	} coro_cctx;	194	} coro_cctx;
160		195
161	enum {	196	enum {
162	CF_RUNNING = 0x0001, /* coroutine is running */	197	CF_RUNNING = 0x0001, /* coroutine is running */
163	CF_READY = 0x0002, /* coroutine is ready */	198	CF_READY = 0x0002, /* coroutine is ready */
164	CF_NEW = 0x0004, /* has never been switched to */	199	CF_NEW = 0x0004, /* has never been switched to */
165	CF_DESTROYED = 0x0008, /* coroutine data has been freed */	200	CF_DESTROYED = 0x0008, /* coroutine data has been freed */
166	};	201	};
167		202
		203	/* the structure where most of the perl state is stored, overlaid on the cxstack */
		204	typedef struct {
		205	SV *defsv;
		206	AV *defav;
		207	SV *errsv;
		208	SV *irsgv;
		209	#define VAR(name,type) type name;
		210	# include "state.h"
		211	#undef VAR
		212	} perl_slots;
		213
		214	#define SLOT_COUNT ((sizeof (perl_slots) + sizeof (PERL_CONTEXT) - 1) / sizeof (PERL_CONTEXT))
		215
168	/* this is a structure representing a perl-level coroutine */	216	/* this is a structure representing a perl-level coroutine */
169	struct coro {	217	struct coro {
170	/* the c coroutine allocated to this perl coroutine, if any */	218	/* the c coroutine allocated to this perl coroutine, if any */
171	coro_cctx *cctx;	219	coro_cctx *cctx;
172		220
		221	/* process data */
		222	AV *mainstack;
		223	perl_slots *slot; /* basically the saved sp */
		224
173	/* data associated with this coroutine (initial args) */	225	AV *args; /* data associated with this coroutine (initial args) */
174	AV *args;	226	int refcnt; /* coroutines are refcounted, yes */
175	int refcnt;
176	int save; /* CORO_SAVE flags */
177	int flags; /* CF_ flags */	227	int flags; /* CF_ flags */
		228	HV *hv; /* the perl hash associated with this coro, if any */
178		229
179	/* optionally saved, might be zero */	230	/* statistics */
180	AV *defav; /* @_ */	231	int usecount; /* number of transfers to this coro */
181	SV *defsv; /* $_ */
182	SV *errsv; /* $@ */
183	GV *deffh; /* default filehandle */
184	SV *irssv; /* $/ */
185	SV *irssv_sv; /* real $/ cache */
186
187	#define VAR(name,type) type name;
188	# include "state.h"
189	#undef VAR
190		232
191	/* coro process data */	233	/* coro process data */
192	int prio;	234	int prio;
		235	SV *throw; /* exception to be thrown */
		236
		237	/* async_pool */
		238	SV *saved_deffh;
193		239
194	/* linked list */	240	/* linked list */
195	struct coro *next, *prev;	241	struct coro *next, *prev;
196	HV *hv; /* the perl hash associated with this coro, if any */
197	};	242	};
198		243
199	typedef struct coro *Coro__State;	244	typedef struct coro *Coro__State;
200	typedef struct coro *Coro__State_or_hashref;	245	typedef struct coro *Coro__State_or_hashref;
201		246
…		…
210		255
211	/* for Coro.pm */	256	/* for Coro.pm */
212	static SV *coro_current;	257	static SV *coro_current;
213	static AV *coro_ready [PRIO_MAX-PRIO_MIN+1];	258	static AV *coro_ready [PRIO_MAX-PRIO_MIN+1];
214	static int coro_nready;	259	static int coro_nready;
215	static struct coro *first;	260	static struct coro *coro_first;
216		261
217	/** lowlevel stuff **********************************************************/	262	/** lowlevel stuff **********************************************************/
		263
		264	static SV *
		265	coro_get_sv (const char *name, int create)
		266	{
		267	#if PERL_VERSION_ATLEAST (5,9,0)
		268	/* silence stupid and wrong 5.10 warning that I am unable to switch off */
		269	get_sv (name, create);
		270	#endif
		271	return get_sv (name, create);
		272	}
		273
		274	static AV *
		275	coro_get_av (const char *name, int create)
		276	{
		277	#if PERL_VERSION_ATLEAST (5,9,0)
		278	/* silence stupid and wrong 5.10 warning that I am unable to switch off */
		279	get_av (name, create);
		280	#endif
		281	return get_av (name, create);
		282	}
		283
		284	static HV *
		285	coro_get_hv (const char *name, int create)
		286	{
		287	#if PERL_VERSION_ATLEAST (5,9,0)
		288	/* silence stupid and wrong 5.10 warning that I am unable to switch off */
		289	get_hv (name, create);
		290	#endif
		291	return get_hv (name, create);
		292	}
218		293
219	static AV *	294	static AV *
220	coro_clone_padlist (pTHX_ CV *cv)	295	coro_clone_padlist (pTHX_ CV *cv)
221	{	296	{
222	AV *padlist = CvPADLIST (cv);	297	AV *padlist = CvPADLIST (cv);
…		…
286	? SvMAGIC (cv)->mg_type == PERL_MAGIC_coro \	361	? SvMAGIC (cv)->mg_type == PERL_MAGIC_coro \
287	? SvMAGIC (cv) \	362	? SvMAGIC (cv) \
288	: mg_find ((SV *)cv, PERL_MAGIC_coro) \	363	: mg_find ((SV *)cv, PERL_MAGIC_coro) \
289	: 0	364	: 0
290		365
		366	static struct coro *
		367	SvSTATE_ (pTHX_ SV *coro)
		368	{
		369	HV *stash;
		370	MAGIC *mg;
		371
		372	if (SvROK (coro))
		373	coro = SvRV (coro);
		374
		375	if (expect_false (SvTYPE (coro) != SVt_PVHV))
		376	croak ("Coro::State object required");
		377
		378	stash = SvSTASH (coro);
		379	if (expect_false (stash != coro_stash && stash != coro_state_stash))
		380	{
		381	/* very slow, but rare, check */
		382	if (!sv_derived_from (sv_2mortal (newRV_inc (coro)), "Coro::State"))
		383	croak ("Coro::State object required");
		384	}
		385
		386	mg = CORO_MAGIC (coro);
		387	return (struct coro *)mg->mg_ptr;
		388	}
		389
		390	#define SvSTATE(sv) SvSTATE_ (aTHX_ (sv))
		391
291	/* the next two functions merely cache the padlists */	392	/* the next two functions merely cache the padlists */
292	static void	393	static void
293	get_padlist (pTHX_ CV *cv)	394	get_padlist (pTHX_ CV *cv)
294	{	395	{
295	MAGIC *mg = CORO_MAGIC (cv);	396	MAGIC *mg = CORO_MAGIC (cv);
296	AV *av;	397	AV *av;
297		398
298	if (mg && AvFILLp ((av = (AV *)mg->mg_obj)) >= 0)	399	if (expect_true (mg && AvFILLp ((av = (AV *)mg->mg_obj)) >= 0))
299	CvPADLIST (cv) = (AV *)AvARRAY (av)[AvFILLp (av)--];	400	CvPADLIST (cv) = (AV *)AvARRAY (av)[AvFILLp (av)--];
300	else	401	else
301	{	402	{
302	#if CORO_PREFER_PERL_FUNCTIONS	403	#if CORO_PREFER_PERL_FUNCTIONS
303	/* this is probably cleaner, but also slower? */	404	/* this is probably cleaner, but also slower? */
…		…
315	put_padlist (pTHX_ CV *cv)	416	put_padlist (pTHX_ CV *cv)
316	{	417	{
317	MAGIC *mg = CORO_MAGIC (cv);	418	MAGIC *mg = CORO_MAGIC (cv);
318	AV *av;	419	AV *av;
319		420
320	if (!mg)	421	if (expect_false (!mg))
321	{	422	{
322	sv_magic ((SV *)cv, 0, PERL_MAGIC_coro, 0, 0);	423	sv_magic ((SV *)cv, 0, PERL_MAGIC_coro, 0, 0);
323	mg = mg_find ((SV *)cv, PERL_MAGIC_coro);	424	mg = mg_find ((SV *)cv, PERL_MAGIC_coro);
324	mg->mg_virtual = &vtbl_coro;	425	mg->mg_virtual = &vtbl_coro;
325	mg->mg_obj = (SV *)newAV ();	426	mg->mg_obj = (SV *)newAV ();
326	}	427	}
327		428
328	av = (AV *)mg->mg_obj;	429	av = (AV *)mg->mg_obj;
329		430
330	if (AvFILLp (av) >= AvMAX (av))	431	if (expect_false (AvFILLp (av) >= AvMAX (av)))
331	av_extend (av, AvMAX (av) + 1);	432	av_extend (av, AvMAX (av) + 1);
332		433
333	AvARRAY (av)[++AvFILLp (av)] = (SV *)CvPADLIST (cv);	434	AvARRAY (av)[++AvFILLp (av)] = (SV *)CvPADLIST (cv);
334	}	435	}
335		436
336	/** load & save, init *******************************************************/	437	/** load & save, init *******************************************************/
337		438
338	#define SB do {
339	#define SE } while (0)
340
341	#define REPLACE_SV(sv,val) SB SvREFCNT_dec (sv); (sv) = (val); (val) = 0; SE
342
343	static void	439	static void
344	load_perl (pTHX_ Coro__State c)	440	load_perl (pTHX_ Coro__State c)
345	{	441	{
		442	perl_slots *slot = c->slot;
		443	c->slot = 0;
		444
		445	PL_mainstack = c->mainstack;
		446
		447	GvSV (PL_defgv) = slot->defsv;
		448	GvAV (PL_defgv) = slot->defav;
		449	GvSV (PL_errgv) = slot->errsv;
		450	GvSV (irsgv) = slot->irsgv;
		451
346	#define VAR(name,type) PL_ ## name = c->name;	452	#define VAR(name,type) PL_ ## name = slot->name;
347	# include "state.h"	453	# include "state.h"
348	#undef VAR	454	#undef VAR
349		455
350	if (c->defav) REPLACE_SV (GvAV (PL_defgv), c->defav);	456	/*hv_store (hv_sig, "__DIE__" , sizeof ("__DIE__" ) - 1, SvREFCNT_inc (sv_diehook ), 0);*/
351	if (c->defsv) REPLACE_SV (DEFSV , c->defsv);	457	/*hv_store (hv_sig, "__WARN__", sizeof ("__WARN__") - 1, SvREFCNT_inc (sv_warnhook), 0);*/
352	if (c->errsv) REPLACE_SV (ERRSV , c->errsv);
353	if (c->deffh) REPLACE_SV (PL_defoutgv , c->deffh);
354
355	if (c->irssv)
356	{
357	if (c->irssv == PL_rs || sv_eq (PL_rs, c->irssv))
358	{
359	SvREFCNT_dec (c->irssv);
360	c->irssv = 0;
361	}
362	else
363	{
364	REPLACE_SV (PL_rs, c->irssv);
365	if (!c->irssv_sv) c->irssv_sv = get_sv ("/", 0);
366	sv_setsv (c->irssv_sv, PL_rs);
367	}
368	}
369		458
370	{	459	{
371	dSP;	460	dSP;
		461
372	CV *cv;	462	CV *cv;
373		463
374	/* now do the ugly restore mess */	464	/* now do the ugly restore mess */
375	while ((cv = (CV *)POPs))	465	while (expect_true (cv = (CV *)POPs))
376	{	466	{
377	put_padlist (aTHX_ cv); /* mark this padlist as available */	467	put_padlist (aTHX_ cv); /* mark this padlist as available */
378	CvDEPTH (cv) = PTR2IV (POPs);	468	CvDEPTH (cv) = PTR2IV (POPs);
379	CvPADLIST (cv) = (AV *)POPs;	469	CvPADLIST (cv) = (AV *)POPs;
380	}	470	}
…		…
395	/*	485	/*
396	* the worst thing you can imagine happens first - we have to save	486	* the worst thing you can imagine happens first - we have to save
397	* (and reinitialize) all cv's in the whole callchain :(	487	* (and reinitialize) all cv's in the whole callchain :(
398	*/	488	*/
399		489
400	EXTEND (SP, 3 + 1);
401	PUSHs (Nullsv);	490	XPUSHs (Nullsv);
402	/* this loop was inspired by pp_caller */	491	/* this loop was inspired by pp_caller */
403	for (;;)	492	for (;;)
404	{	493	{
405	while (cxix >= 0)	494	while (expect_true (cxix >= 0))
406	{	495	{
407	PERL_CONTEXT *cx = &ccstk[cxix--];	496	PERL_CONTEXT *cx = &ccstk[cxix--];
408		497
409	if (CxTYPE (cx) == CXt_SUB || CxTYPE (cx) == CXt_FORMAT)	498	if (expect_true (CxTYPE (cx) == CXt_SUB || CxTYPE (cx) == CXt_FORMAT))
410	{	499	{
411	CV *cv = cx->blk_sub.cv;	500	CV *cv = cx->blk_sub.cv;
412		501
413	if (CvDEPTH (cv))	502	if (expect_true (CvDEPTH (cv)))
414	{	503	{
415	EXTEND (SP, 3);	504	EXTEND (SP, 3);
416	PUSHs ((SV *)CvPADLIST (cv));	505	PUSHs ((SV *)CvPADLIST (cv));
417	PUSHs (INT2PTR (SV *, CvDEPTH (cv)));	506	PUSHs (INT2PTR (SV *, CvDEPTH (cv)));
418	PUSHs ((SV *)cv);	507	PUSHs ((SV *)cv);
…		…
421	get_padlist (aTHX_ cv);	510	get_padlist (aTHX_ cv);
422	}	511	}
423	}	512	}
424	}	513	}
425		514
426	if (top_si->si_type == PERLSI_MAIN)	515	if (expect_true (top_si->si_type == PERLSI_MAIN))
427	break;	516	break;
428		517
429	top_si = top_si->si_prev;	518	top_si = top_si->si_prev;
430	ccstk = top_si->si_cxstack;	519	ccstk = top_si->si_cxstack;
431	cxix = top_si->si_cxix;	520	cxix = top_si->si_cxix;
432	}	521	}
433		522
434	PUTBACK;	523	PUTBACK;
435	}	524	}
436		525
437	c->defav = c->save & CORO_SAVE_DEFAV ? (AV *)SvREFCNT_inc (GvAV (PL_defgv)) : 0;	526	/* allocate some space on the context stack for our purposes */
438	c->defsv = c->save & CORO_SAVE_DEFSV ? SvREFCNT_inc (DEFSV) : 0;	527	/* we manually unroll here, as usually 2 slots is enough */
439	c->errsv = c->save & CORO_SAVE_ERRSV ? SvREFCNT_inc (ERRSV) : 0;	528	if (SLOT_COUNT >= 1) CXINC;
440	c->deffh = c->save & CORO_SAVE_DEFFH ? (GV *)SvREFCNT_inc (PL_defoutgv) : 0;	529	if (SLOT_COUNT >= 2) CXINC;
441	c->irssv = c->save & CORO_SAVE_IRSSV ? SvREFCNT_inc (PL_rs) : 0;	530	if (SLOT_COUNT >= 3) CXINC;
		531	{
		532	int i;
		533	for (i = 3; i < SLOT_COUNT; ++i)
		534	CXINC;
		535	}
		536	cxstack_ix -= SLOT_COUNT; /* undo allocation */
442		537
		538	c->mainstack = PL_mainstack;
		539
		540	{
		541	perl_slots *slot = c->slot = (perl_slots *)(cxstack + cxstack_ix + 1);
		542
		543	slot->defav = GvAV (PL_defgv);
		544	slot->defsv = DEFSV;
		545	slot->errsv = ERRSV;
		546	slot->irsgv = GvSV (irsgv);
		547
443	#define VAR(name,type)c->name = PL_ ## name;	548	#define VAR(name,type) slot->name = PL_ ## name;
444	# include "state.h"	549	# include "state.h"
445	#undef VAR	550	#undef VAR
		551	}
446	}	552	}
447		553
448	/*	554	/*
449	* allocate various perl stacks. This is an exact copy	555	* allocate various perl stacks. This is an exact copy
450	* of perl.c:init_stacks, except that it uses less memory	556	* of perl.c:init_stacks, except that it uses less memory
…		…
455	# define coro_init_stacks init_stacks	561	# define coro_init_stacks init_stacks
456	#else	562	#else
457	static void	563	static void
458	coro_init_stacks (pTHX)	564	coro_init_stacks (pTHX)
459	{	565	{
460	PL_curstackinfo = new_stackinfo(128, 1024/sizeof(PERL_CONTEXT));	566	PL_curstackinfo = new_stackinfo(32, 8);
461	PL_curstackinfo->si_type = PERLSI_MAIN;	567	PL_curstackinfo->si_type = PERLSI_MAIN;
462	PL_curstack = PL_curstackinfo->si_stack;	568	PL_curstack = PL_curstackinfo->si_stack;
463	PL_mainstack = PL_curstack; /* remember in case we switch stacks */	569	PL_mainstack = PL_curstack; /* remember in case we switch stacks */
464		570
465	PL_stack_base = AvARRAY(PL_curstack);	571	PL_stack_base = AvARRAY(PL_curstack);
466	PL_stack_sp = PL_stack_base;	572	PL_stack_sp = PL_stack_base;
467	PL_stack_max = PL_stack_base + AvMAX(PL_curstack);	573	PL_stack_max = PL_stack_base + AvMAX(PL_curstack);
468		574
469	New(50,PL_tmps_stack,128,SV*);	575	New(50,PL_tmps_stack,32,SV*);
470	PL_tmps_floor = -1;	576	PL_tmps_floor = -1;
471	PL_tmps_ix = -1;	577	PL_tmps_ix = -1;
472	PL_tmps_max = 128;	578	PL_tmps_max = 32;
473		579
474	New(54,PL_markstack,32,I32);	580	New(54,PL_markstack,16,I32);
475	PL_markstack_ptr = PL_markstack;	581	PL_markstack_ptr = PL_markstack;
476	PL_markstack_max = PL_markstack + 32;	582	PL_markstack_max = PL_markstack + 16;
477		583
478	#ifdef SET_MARK_OFFSET	584	#ifdef SET_MARK_OFFSET
479	SET_MARK_OFFSET;	585	SET_MARK_OFFSET;
480	#endif	586	#endif
481		587
482	New(54,PL_scopestack,32,I32);	588	New(54,PL_scopestack,8,I32);
483	PL_scopestack_ix = 0;	589	PL_scopestack_ix = 0;
484	PL_scopestack_max = 32;	590	PL_scopestack_max = 8;
485		591
486	New(54,PL_savestack,64,ANY);	592	New(54,PL_savestack,24,ANY);
487	PL_savestack_ix = 0;	593	PL_savestack_ix = 0;
488	PL_savestack_max = 64;	594	PL_savestack_max = 24;
489		595
490	#if !PERL_VERSION_ATLEAST (5,9,0)	596	#if !PERL_VERSION_ATLEAST (5,9,0)
491	New(54,PL_retstack,16,OP*);	597	New(54,PL_retstack,4,OP*);
492	PL_retstack_ix = 0;	598	PL_retstack_ix = 0;
493	PL_retstack_max = 16;	599	PL_retstack_max = 4;
494	#endif	600	#endif
495	}	601	}
496	#endif	602	#endif
497		603
498	/*	604	/*
499	* destroy the stacks, the callchain etc...	605	* destroy the stacks, the callchain etc...
500	*/	606	*/
501	static void	607	static void
502	coro_destroy_stacks (pTHX)	608	coro_destroy_stacks (pTHX)
503	{	609	{
504	if (!IN_DESTRUCT)
505	{
506	/* restore all saved variables and stuff */
507	LEAVE_SCOPE (0);
508	assert (PL_tmps_floor == -1);
509
510	/* free all temporaries */
511	FREETMPS;
512	assert (PL_tmps_ix == -1);
513
514	/* unwind all extra stacks */
515	POPSTACK_TO (PL_mainstack);
516
517	/* unwind main stack */
518	dounwind (-1);
519	}
520
521	while (PL_curstackinfo->si_next)	610	while (PL_curstackinfo->si_next)
522	PL_curstackinfo = PL_curstackinfo->si_next;	611	PL_curstackinfo = PL_curstackinfo->si_next;
523		612
524	while (PL_curstackinfo)	613	while (PL_curstackinfo)
525	{	614	{
…		…
541	Safefree (PL_retstack);	630	Safefree (PL_retstack);
542	#endif	631	#endif
543	}	632	}
544		633
545	static size_t	634	static size_t
546	coro_rss (struct coro *coro)	635	coro_rss (pTHX_ struct coro *coro)
547	{	636	{
548	size_t rss = sizeof (coro);	637	size_t rss = sizeof (*coro);
549		638
550	if (coro->mainstack)	639	if (coro->mainstack)
551	{	640	{
		641	perl_slots tmp_slot;
		642	perl_slots *slot;
		643
		644	if (coro->flags & CF_RUNNING)
		645	{
		646	slot = &tmp_slot;
		647
		648	#define VAR(name,type) slot->name = PL_ ## name;
		649	# include "state.h"
		650	#undef VAR
		651	}
		652	else
		653	slot = coro->slot;
		654
552	rss += sizeof (coro->curstackinfo);	655	rss += sizeof (slot->curstackinfo);
553	rss += sizeof (struct xpvav) + (1 + AvFILL (coro->curstackinfo->si_stack)) * sizeof (SV *);
554	rss += (coro->curstackinfo->si_cxmax + 1) * sizeof (PERL_CONTEXT);	656	rss += (slot->curstackinfo->si_cxmax + 1) * sizeof (PERL_CONTEXT);
555
556	rss += sizeof (struct xpvav) + (1 + AvFILL (coro->curstack)) * sizeof (SV *);	657	rss += sizeof (SV) + sizeof (struct xpvav) + (1 + AvMAX (slot->curstack)) * sizeof (SV *);
557
558	rss += coro->tmps_max * sizeof (SV *);	658	rss += slot->tmps_max * sizeof (SV *);
559
560	rss += (coro->markstack_max - coro->markstack_ptr) * sizeof (I32);	659	rss += (slot->markstack_max - slot->markstack_ptr) * sizeof (I32);
561
562	rss += coro->scopestack_max * sizeof (I32);	660	rss += slot->scopestack_max * sizeof (I32);
563
564	rss += coro->savestack_max * sizeof (ANY);	661	rss += slot->savestack_max * sizeof (ANY);
565		662
566	#if !PERL_VERSION_ATLEAST (5,9,0)	663	#if !PERL_VERSION_ATLEAST (5,9,0)
567	rss += coro->retstack_max * sizeof (OP *);	664	rss += slot->retstack_max * sizeof (OP *);
568	#endif	665	#endif
569	}	666	}
570		667
571	return rss;	668	return rss;
572	}	669	}
573		670
574	/** coroutine stack handling ************************************************/	671	/** coroutine stack handling ************************************************/
575		672
576	static void	673	static void
577	setup_coro (pTHX_ struct coro *coro)	674	coro_setup (pTHX_ struct coro *coro)
578	{	675	{
579	/*	676	/*
580	* emulate part of the perl startup here.	677	* emulate part of the perl startup here.
581	*/	678	*/
582	coro_init_stacks (aTHX);	679	coro_init_stacks (aTHX);
583		680
		681	PL_runops = RUNOPS_DEFAULT;
584	PL_curcop = &PL_compiling;	682	PL_curcop = &PL_compiling;
585	PL_in_eval = EVAL_NULL;	683	PL_in_eval = EVAL_NULL;
586	PL_comppad = 0;	684	PL_comppad = 0;
587	PL_curpm = 0;	685	PL_curpm = 0;
		686	PL_curpad = 0;
588	PL_localizing = 0;	687	PL_localizing = 0;
589	PL_dirty = 0;	688	PL_dirty = 0;
590	PL_restartop = 0;	689	PL_restartop = 0;
		690	PL_diehook = 0; hv_store (hv_sig, "__DIE__" , sizeof ("__DIE__" ) - 1, SvREFCNT_inc (sv_diehook ), 0);
		691	PL_warnhook = 0; hv_store (hv_sig, "__WARN__", sizeof ("__WARN__") - 1, SvREFCNT_inc (sv_warnhook), 0);
		692
		693	GvSV (PL_defgv) = newSV (0);
		694	GvAV (PL_defgv) = coro->args; coro->args = 0;
		695	GvSV (PL_errgv) = newSV (0);
		696	GvSV (irsgv) = newSVpvn ("\n", 1); sv_magic (GvSV (irsgv), (SV *)irsgv, PERL_MAGIC_sv, "/", 0);
		697	PL_rs = newSVsv (GvSV (irsgv));
		698	PL_defoutgv = (GV *)SvREFCNT_inc (stdoutgv);
591		699
592	{	700	{
593	dSP;	701	dSP;
594	LOGOP myop;	702	LOGOP myop;
595		703
596	SvREFCNT_dec (GvAV (PL_defgv));
597	GvAV (PL_defgv) = coro->args; coro->args = 0;
598
599	Zero (&myop, 1, LOGOP);	704	Zero (&myop, 1, LOGOP);
600	myop.op_next = Nullop;	705	myop.op_next = Nullop;
601	myop.op_flags = OPf_WANT_VOID;	706	myop.op_flags = OPf_WANT_VOID;
602		707
603	PUSHMARK (SP);	708	PUSHMARK (SP);
604	XPUSHs (av_shift (GvAV (PL_defgv)));	709	XPUSHs (sv_2mortal (av_shift (GvAV (PL_defgv))));
605	PUTBACK;	710	PUTBACK;
606	PL_op = (OP *)&myop;	711	PL_op = (OP *)&myop;
607	PL_op = PL_ppaddr[OP_ENTERSUB](aTHX);	712	PL_op = PL_ppaddr[OP_ENTERSUB](aTHX);
608	SPAGAIN;	713	SPAGAIN;
609	}	714	}
610		715
611	ENTER; /* necessary e.g. for dounwind */	716	/* this newly created coroutine might be run on an existing cctx which most
		717	* likely was suspended in set_stacklevel, called from entersub.
		718	* set_stacklevl doesn't do anything on return, but entersub does LEAVE,
		719	* so we ENTER here for symmetry
		720	*/
		721	ENTER;
		722	}
		723
		724	static void
		725	coro_destroy (pTHX_ struct coro *coro)
		726	{
		727	if (!IN_DESTRUCT)
		728	{
		729	/* restore all saved variables and stuff */
		730	LEAVE_SCOPE (0);
		731	assert (PL_tmps_floor == -1);
		732
		733	/* free all temporaries */
		734	FREETMPS;
		735	assert (PL_tmps_ix == -1);
		736
		737	/* unwind all extra stacks */
		738	POPSTACK_TO (PL_mainstack);
		739
		740	/* unwind main stack */
		741	dounwind (-1);
		742	}
		743
		744	SvREFCNT_dec (GvSV (PL_defgv));
		745	SvREFCNT_dec (GvAV (PL_defgv));
		746	SvREFCNT_dec (GvSV (PL_errgv));
		747	SvREFCNT_dec (PL_defoutgv);
		748	SvREFCNT_dec (PL_rs);
		749	SvREFCNT_dec (GvSV (irsgv));
		750
		751	SvREFCNT_dec (PL_diehook);
		752	SvREFCNT_dec (PL_warnhook);
		753
		754	SvREFCNT_dec (coro->saved_deffh);
		755	SvREFCNT_dec (coro->throw);
		756
		757	coro_destroy_stacks (aTHX);
612	}	758	}
613		759
614	static void	760	static void
615	free_coro_mortal (pTHX)	761	free_coro_mortal (pTHX)
616	{	762	{
617	if (coro_mortal)	763	if (expect_true (coro_mortal))
618	{	764	{
619	SvREFCNT_dec (coro_mortal);	765	SvREFCNT_dec (coro_mortal);
620	coro_mortal = 0;	766	coro_mortal = 0;
621	}	767	}
		768	}
		769
		770	static int
		771	runops_trace (pTHX)
		772	{
		773	COP *oldcop = 0;
		774	int oldcxix = -2;
		775	struct coro *coro = SvSTATE (coro_current); /* trace cctx is tied to specific coro */
		776	coro_cctx *cctx = coro->cctx;
		777
		778	while ((PL_op = CALL_FPTR (PL_op->op_ppaddr) (aTHX)))
		779	{
		780	PERL_ASYNC_CHECK ();
		781
		782	if (cctx->flags & CC_TRACE_ALL)
		783	{
		784	if (PL_op->op_type == OP_LEAVESUB && cctx->flags & CC_TRACE_SUB)
		785	{
		786	PERL_CONTEXT *cx = &cxstack[cxstack_ix];
		787	SV **bot, **top;
		788	AV *av = newAV (); /* return values */
		789	SV **cb;
		790	dSP;
		791
		792	GV *gv = CvGV (cx->blk_sub.cv);
		793	SV *fullname = sv_2mortal (newSV (0));
		794	if (isGV (gv))
		795	gv_efullname3 (fullname, gv, 0);
		796
		797	bot = PL_stack_base + cx->blk_oldsp + 1;
		798	top = cx->blk_gimme == G_ARRAY ? SP + 1
		799	: cx->blk_gimme == G_SCALAR ? bot + 1
		800	: bot;
		801
		802	av_extend (av, top - bot);
		803	while (bot < top)
		804	av_push (av, SvREFCNT_inc (*bot++));
		805
		806	PL_runops = RUNOPS_DEFAULT;
		807	ENTER;
		808	SAVETMPS;
		809	EXTEND (SP, 3);
		810	PUSHMARK (SP);
		811	PUSHs (&PL_sv_no);
		812	PUSHs (fullname);
		813	PUSHs (sv_2mortal (newRV_noinc ((SV *)av)));
		814	PUTBACK;
		815	cb = hv_fetch ((HV *)SvRV (coro_current), "_trace_sub_cb", sizeof ("_trace_sub_cb") - 1, 0);
		816	if (cb) call_sv (*cb, G_KEEPERR | G_EVAL | G_VOID | G_DISCARD);
		817	SPAGAIN;
		818	FREETMPS;
		819	LEAVE;
		820	PL_runops = runops_trace;
		821	}
		822
		823	if (oldcop != PL_curcop)
		824	{
		825	oldcop = PL_curcop;
		826
		827	if (PL_curcop != &PL_compiling)
		828	{
		829	SV **cb;
		830
		831	if (oldcxix != cxstack_ix && cctx->flags & CC_TRACE_SUB)
		832	{
		833	PERL_CONTEXT *cx = &cxstack[cxstack_ix];
		834
		835	if (CxTYPE (cx) == CXt_SUB && oldcxix < cxstack_ix)
		836	{
		837	runops_proc_t old_runops = PL_runops;
		838	dSP;
		839	GV *gv = CvGV (cx->blk_sub.cv);
		840	SV *fullname = sv_2mortal (newSV (0));
		841
		842	if (isGV (gv))
		843	gv_efullname3 (fullname, gv, 0);
		844
		845	PL_runops = RUNOPS_DEFAULT;
		846	ENTER;
		847	SAVETMPS;
		848	EXTEND (SP, 3);
		849	PUSHMARK (SP);
		850	PUSHs (&PL_sv_yes);
		851	PUSHs (fullname);
		852	PUSHs (cx->blk_sub.hasargs ? sv_2mortal (newRV_inc ((SV *)cx->blk_sub.argarray)) : &PL_sv_undef);
		853	PUTBACK;
		854	cb = hv_fetch ((HV *)SvRV (coro_current), "_trace_sub_cb", sizeof ("_trace_sub_cb") - 1, 0);
		855	if (cb) call_sv (*cb, G_KEEPERR | G_EVAL | G_VOID | G_DISCARD);
		856	SPAGAIN;
		857	FREETMPS;
		858	LEAVE;
		859	PL_runops = runops_trace;
		860	}
		861
		862	oldcxix = cxstack_ix;
		863	}
		864
		865	if (cctx->flags & CC_TRACE_LINE)
		866	{
		867	dSP;
		868
		869	PL_runops = RUNOPS_DEFAULT;
		870	ENTER;
		871	SAVETMPS;
		872	EXTEND (SP, 3);
		873	PL_runops = RUNOPS_DEFAULT;
		874	PUSHMARK (SP);
		875	PUSHs (sv_2mortal (newSVpv (OutCopFILE (oldcop), 0)));
		876	PUSHs (sv_2mortal (newSViv (CopLINE (oldcop))));
		877	PUTBACK;
		878	cb = hv_fetch ((HV *)SvRV (coro_current), "_trace_line_cb", sizeof ("_trace_line_cb") - 1, 0);
		879	if (cb) call_sv (*cb, G_KEEPERR | G_EVAL | G_VOID | G_DISCARD);
		880	SPAGAIN;
		881	FREETMPS;
		882	LEAVE;
		883	PL_runops = runops_trace;
		884	}
		885	}
		886	}
		887	}
		888	}
		889
		890	TAINT_NOT;
		891	return 0;
622	}	892	}
623		893
624	/* inject a fake call to Coro::State::_cctx_init into the execution */	894	/* inject a fake call to Coro::State::_cctx_init into the execution */
625	/* _cctx_init should be careful, as it could be called at almost any time */	895	/* _cctx_init should be careful, as it could be called at almost any time */
626	/* during execution of a perl program */	896	/* during execution of a perl program */
627	static void NOINLINE	897	static void NOINLINE
628	prepare_cctx (pTHX_ coro_cctx *cctx)	898	cctx_prepare (pTHX_ coro_cctx *cctx)
629	{	899	{
630	dSP;	900	dSP;
631	LOGOP myop;	901	LOGOP myop;
		902
		903	PL_top_env = &PL_start_env;
		904
		905	if (cctx->flags & CC_TRACE)
		906	PL_runops = runops_trace;
632		907
633	Zero (&myop, 1, LOGOP);	908	Zero (&myop, 1, LOGOP);
634	myop.op_next = PL_op;	909	myop.op_next = PL_op;
635	myop.op_flags = OPf_WANT_VOID | OPf_STACKED;	910	myop.op_flags = OPf_WANT_VOID | OPf_STACKED;
636		911
…		…
646		921
647	/*	922	/*
648	* this is a _very_ stripped down perl interpreter ;)	923	* this is a _very_ stripped down perl interpreter ;)
649	*/	924	*/
650	static void	925	static void
651	coro_run (void *arg)	926	cctx_run (void *arg)
652	{	927	{
653	dTHX;	928	dTHX;
654		929
655	/* coro_run is the alternative tail of transfer(), so unlock here. */	930	/* cctx_run is the alternative tail of transfer(), so unlock here. */
656	UNLOCK;	931	UNLOCK;
657		932
658	PL_top_env = &PL_start_env;	933	/* we now skip the entersub that lead to transfer() */
		934	PL_op = PL_op->op_next;
659		935
660	/* inject a fake subroutine call to cctx_init */	936	/* inject a fake subroutine call to cctx_init */
661	prepare_cctx (aTHX_ (coro_cctx *)arg);	937	cctx_prepare (aTHX_ (coro_cctx *)arg);
662		938
663	/* somebody or something will hit me for both perl_run and PL_restartop */	939	/* somebody or something will hit me for both perl_run and PL_restartop */
664	PL_restartop = PL_op;	940	PL_restartop = PL_op;
665	perl_run (PL_curinterp);	941	perl_run (PL_curinterp);
666		942
…		…
685	++cctx_count;	961	++cctx_count;
686		962
687	Newz (0, cctx, 1, coro_cctx);	963	Newz (0, cctx, 1, coro_cctx);
688		964
689	#if HAVE_MMAP	965	#if HAVE_MMAP
690
691	cctx->ssize = ((coro_stacksize * sizeof (long) + PAGESIZE - 1) / PAGESIZE + CORO_STACKGUARD) * PAGESIZE;	966	cctx->ssize = ((coro_stacksize * sizeof (long) + PAGESIZE - 1) / PAGESIZE + CORO_STACKGUARD) * PAGESIZE;
692	/* mmap supposedly does allocate-on-write for us */	967	/* mmap supposedly does allocate-on-write for us */
693	cctx->sptr = mmap (0, cctx->ssize, PROT_EXEC|PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, 0, 0);	968	cctx->sptr = mmap (0, cctx->ssize, PROT_EXEC|PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, 0, 0);
694		969
695	if (cctx->sptr != (void *)-1)	970	if (cctx->sptr != (void *)-1)
…		…
697	# if CORO_STACKGUARD	972	# if CORO_STACKGUARD
698	mprotect (cctx->sptr, CORO_STACKGUARD * PAGESIZE, PROT_NONE);	973	mprotect (cctx->sptr, CORO_STACKGUARD * PAGESIZE, PROT_NONE);
699	# endif	974	# endif
700	stack_start = CORO_STACKGUARD * PAGESIZE + (char *)cctx->sptr;	975	stack_start = CORO_STACKGUARD * PAGESIZE + (char *)cctx->sptr;
701	stack_size = cctx->ssize - CORO_STACKGUARD * PAGESIZE;	976	stack_size = cctx->ssize - CORO_STACKGUARD * PAGESIZE;
702	cctx->mapped = 1;	977	cctx->flags |= CC_MAPPED;
703	}	978	}
704	else	979	else
705	#endif	980	#endif
706	{	981	{
707	cctx->ssize = coro_stacksize * (long)sizeof (long);	982	cctx->ssize = coro_stacksize * (long)sizeof (long);
…		…
716	stack_start = cctx->sptr;	991	stack_start = cctx->sptr;
717	stack_size = cctx->ssize;	992	stack_size = cctx->ssize;
718	}	993	}
719		994
720	REGISTER_STACK (cctx, (char *)stack_start, (char *)stack_start + stack_size);	995	REGISTER_STACK (cctx, (char *)stack_start, (char *)stack_start + stack_size);
721	coro_create (&cctx->cctx, coro_run, (void *)cctx, stack_start, stack_size);	996	coro_create (&cctx->cctx, cctx_run, (void *)cctx, stack_start, stack_size);
722		997
723	return cctx;	998	return cctx;
724	}	999	}
725		1000
726	static void	1001	static void
…		…
734	#if CORO_USE_VALGRIND	1009	#if CORO_USE_VALGRIND
735	VALGRIND_STACK_DEREGISTER (cctx->valgrind_id);	1010	VALGRIND_STACK_DEREGISTER (cctx->valgrind_id);
736	#endif	1011	#endif
737		1012
738	#if HAVE_MMAP	1013	#if HAVE_MMAP
739	if (cctx->mapped)	1014	if (cctx->flags & CC_MAPPED)
740	munmap (cctx->sptr, cctx->ssize);	1015	munmap (cctx->sptr, cctx->ssize);
741	else	1016	else
742	#endif	1017	#endif
743	Safefree (cctx->sptr);	1018	Safefree (cctx->sptr);
744		1019
745	Safefree (cctx);	1020	Safefree (cctx);
746	}	1021	}
747		1022
		1023	/* wether this cctx should be destructed */
		1024	#define CCTX_EXPIRED(cctx) ((cctx)->ssize < coro_stacksize || ((cctx)->flags & CC_NOREUSE))
		1025
748	static coro_cctx *	1026	static coro_cctx *
749	cctx_get (pTHX)	1027	cctx_get (pTHX)
750	{	1028	{
751	while (cctx_first)	1029	while (expect_true (cctx_first))
752	{	1030	{
753	coro_cctx *cctx = cctx_first;	1031	coro_cctx *cctx = cctx_first;
754	cctx_first = cctx->next;	1032	cctx_first = cctx->next;
755	--cctx_idle;	1033	--cctx_idle;
756		1034
757	if (cctx->ssize >= coro_stacksize)	1035	if (expect_true (!CCTX_EXPIRED (cctx)))
758	return cctx;	1036	return cctx;
759		1037
760	cctx_destroy (cctx);	1038	cctx_destroy (cctx);
761	}	1039	}
762		1040
763	PL_op = PL_op->op_next;
764	return cctx_new ();	1041	return cctx_new ();
765	}	1042	}
766		1043
767	static void	1044	static void
768	cctx_put (coro_cctx *cctx)	1045	cctx_put (coro_cctx *cctx)
769	{	1046	{
770	/* free another cctx if overlimit */	1047	/* free another cctx if overlimit */
771	if (cctx_idle >= MAX_IDLE_CCTX)	1048	if (expect_false (cctx_idle >= MAX_IDLE_CCTX))
772	{	1049	{
773	coro_cctx *first = cctx_first;	1050	coro_cctx *first = cctx_first;
774	cctx_first = first->next;	1051	cctx_first = first->next;
775	--cctx_idle;	1052	--cctx_idle;
776		1053
777	assert (!first->inuse);
778	cctx_destroy (first);	1054	cctx_destroy (first);
779	}	1055	}
780		1056
781	++cctx_idle;	1057	++cctx_idle;
782	cctx->next = cctx_first;	1058	cctx->next = cctx_first;
783	cctx_first = cctx;	1059	cctx_first = cctx;
784	}	1060	}
785		1061
786	/** coroutine switching *****************************************************/	1062	/** coroutine switching *****************************************************/
787		1063
788	/* never call directly, always through the coro_state_transfer global variable */	1064	static void
		1065	transfer_check (pTHX_ struct coro *prev, struct coro *next)
		1066	{
		1067	if (expect_true (prev != next))
		1068	{
		1069	if (expect_false (!(prev->flags & (CF_RUNNING | CF_NEW))))
		1070	croak ("Coro::State::transfer called with non-running/new prev Coro::State, but can only transfer from running or new states");
		1071
		1072	if (expect_false (next->flags & CF_RUNNING))
		1073	croak ("Coro::State::transfer called with running next Coro::State, but can only transfer to inactive states");
		1074
		1075	if (expect_false (next->flags & CF_DESTROYED))
		1076	croak ("Coro::State::transfer called with destroyed next Coro::State, but can only transfer to inactive states");
		1077
		1078	if (
		1079	#if PERL_VERSION_ATLEAST (5,9,0)
		1080	expect_false (PL_parser)
		1081	#else
		1082	expect_false (PL_lex_state != LEX_NOTPARSING)
		1083	#endif
		1084	)
		1085	croak ("Coro::State::transfer called while parsing, but this is not supported");
		1086	}
		1087	}
		1088
		1089	/* always use the TRANSFER macro */
789	static void NOINLINE	1090	static void NOINLINE
790	transfer (pTHX_ struct coro *prev, struct coro *next)	1091	transfer (pTHX_ struct coro *prev, struct coro *next)
791	{	1092	{
792	dSTACKLEVEL;	1093	dSTACKLEVEL;
793		1094
794	/* sometimes transfer is only called to set idle_sp */	1095	/* sometimes transfer is only called to set idle_sp */
795	if (!next)	1096	if (expect_false (!next))
796	{	1097	{
797	((coro_cctx *)prev)->idle_sp = STACKLEVEL;	1098	((coro_cctx *)prev)->idle_sp = STACKLEVEL;
798	assert (((coro_cctx *)prev)->idle_te = PL_top_env); /* just for the side-effect when asserts are enabled */	1099	assert (((coro_cctx *)prev)->idle_te = PL_top_env); /* just for the side-effect when asserts are enabled */
799	}	1100	}
800	else if (prev != next)	1101	else if (expect_true (prev != next))
801	{	1102	{
802	coro_cctx *prev__cctx;	1103	coro_cctx *prev__cctx;
803		1104
804	if (prev->flags & CF_NEW)	1105	if (expect_false (prev->flags & CF_NEW))
805	{	1106	{
806	/* create a new empty context */	1107	/* create a new empty context */
807	Newz (0, prev->cctx, 1, coro_cctx);	1108	Newz (0, prev->cctx, 1, coro_cctx);
808	prev->cctx->inuse = 1;
809	prev->flags &= ~CF_NEW;	1109	prev->flags &= ~CF_NEW;
810	prev->flags |= CF_RUNNING;	1110	prev->flags |= CF_RUNNING;
811	}	1111	}
812		1112
813	/*TODO: must not croak here */
814	if (!prev->flags & CF_RUNNING)
815	croak ("Coro::State::transfer called with non-running prev Coro::State, but can only transfer from running states");
816
817	if (next->flags & CF_RUNNING)
818	croak ("Coro::State::transfer called with running next Coro::State, but can only transfer to inactive states");
819
820	if (next->flags & CF_DESTROYED)
821	croak ("Coro::State::transfer called with destroyed next Coro::State, but can only transfer to inactive states");
822
823	prev->flags &= ~CF_RUNNING;	1113	prev->flags &= ~CF_RUNNING;
824	next->flags |= CF_RUNNING;	1114	next->flags |= CF_RUNNING;
825		1115
826	LOCK;	1116	LOCK;
827		1117
828	if (next->flags & CF_NEW)	1118	if (expect_false (next->flags & CF_NEW))
829	{	1119	{
830	/* need to start coroutine */	1120	/* need to start coroutine */
831	next->flags &= ~CF_NEW;	1121	next->flags &= ~CF_NEW;
832	/* first get rid of the old state */	1122	/* first get rid of the old state */
833	save_perl (aTHX_ prev);	1123	save_perl (aTHX_ prev);
834	/* setup coroutine call */	1124	/* setup coroutine call */
835	setup_coro (aTHX_ next);	1125	coro_setup (aTHX_ next);
836	/* need a new stack */
837	assert (!next->cctx);
838	}	1126	}
839	else	1127	else
840	{	1128	{
841	/* coroutine already started */	1129	/* coroutine already started */
842	save_perl (aTHX_ prev);	1130	save_perl (aTHX_ prev);
…		…
844	}	1132	}
845		1133
846	prev__cctx = prev->cctx;	1134	prev__cctx = prev->cctx;
847		1135
848	/* possibly "free" the cctx */	1136	/* possibly "free" the cctx */
849	if (prev__cctx->idle_sp == STACKLEVEL)	1137	if (expect_true (prev__cctx->idle_sp == STACKLEVEL && !(prev__cctx->flags & CC_TRACE)))
850	{	1138	{
851	/* I assume that STACKLEVEL is a stronger indicator than PL_top_env changes */	1139	/* I assume that STACKLEVEL is a stronger indicator than PL_top_env changes */
852	assert (("ERROR: current top_env must equal previous top_env", PL_top_env == prev__cctx->idle_te));	1140	assert (("ERROR: current top_env must equal previous top_env", PL_top_env == prev__cctx->idle_te));
853		1141
854	prev->cctx = 0;	1142	prev->cctx = 0;
855		1143
		1144	/* if the cctx is about to be destroyed we need to make sure we won't see it in cctx_get */
		1145	/* without this the next cctx_get might destroy the prev__cctx while still in use */
		1146	if (expect_false (CCTX_EXPIRED (prev__cctx)))
		1147	if (!next->cctx)
		1148	next->cctx = cctx_get (aTHX);
		1149
856	cctx_put (prev__cctx);	1150	cctx_put (prev__cctx);
857	prev__cctx->inuse = 0;
858	}	1151	}
859		1152
		1153	++next->usecount;
		1154
860	if (!next->cctx)	1155	if (expect_true (!next->cctx))
861	{
862	next->cctx = cctx_get (aTHX);	1156	next->cctx = cctx_get (aTHX);
863	assert (!next->cctx->inuse);
864	next->cctx->inuse = 1;
865	}
866		1157
867	if (prev__cctx != next->cctx)	1158	if (expect_false (prev__cctx != next->cctx))
868	{	1159	{
869	prev__cctx->top_env = PL_top_env;	1160	prev__cctx->top_env = PL_top_env;
870	PL_top_env = next->cctx->top_env;	1161	PL_top_env = next->cctx->top_env;
871	coro_transfer (&prev__cctx->cctx, &next->cctx->cctx);	1162	coro_transfer (&prev__cctx->cctx, &next->cctx->cctx);
872	}	1163	}
873		1164
874	free_coro_mortal (aTHX);	1165	free_coro_mortal (aTHX);
875	UNLOCK;	1166	UNLOCK;
		1167
		1168	if (expect_false (prev->throw || next->throw))
		1169	{
		1170	struct coro *coro = SvSTATE (coro_current);
		1171
		1172	if (coro->throw)
		1173	{
		1174	SV *exception = coro->throw;
		1175	coro->throw = 0;
		1176	sv_setsv (ERRSV, exception);
		1177	croak (0);
		1178	}
		1179	}
876	}	1180	}
877	}	1181	}
878		1182
879	struct transfer_args	1183	struct transfer_args
880	{	1184	{
881	struct coro *prev, *next;	1185	struct coro *prev, *next;
882	};	1186	};
883		1187
884	#define TRANSFER(ta) transfer (aTHX_ (ta).prev, (ta).next)	1188	#define TRANSFER(ta) transfer (aTHX_ (ta).prev, (ta).next)
		1189	#define TRANSFER_CHECK(ta) transfer_check (aTHX_ (ta).prev, (ta).next)
885		1190
886	/** high level stuff ********************************************************/	1191	/** high level stuff ********************************************************/
887		1192
888	static int	1193	static int
889	coro_state_destroy (pTHX_ struct coro *coro)	1194	coro_state_destroy (pTHX_ struct coro *coro)
…		…
906		1211
907	if (coro->mainstack && coro->mainstack != main_mainstack)	1212	if (coro->mainstack && coro->mainstack != main_mainstack)
908	{	1213	{
909	struct coro temp;	1214	struct coro temp;
910		1215
911	assert (!(coro->flags & CF_RUNNING));
912
913	Zero (&temp, 1, struct coro);
914	temp.save = CORO_SAVE_ALL;
915
916	if (coro->flags & CF_RUNNING)	1216	if (coro->flags & CF_RUNNING)
917	croak ("FATAL: tried to destroy currently running coroutine");	1217	croak ("FATAL: tried to destroy currently running coroutine");
918		1218
919	save_perl (aTHX_ &temp);	1219	save_perl (aTHX_ &temp);
920	load_perl (aTHX_ coro);	1220	load_perl (aTHX_ coro);
921		1221
922	coro_destroy_stacks (aTHX);	1222	coro_destroy (aTHX_ coro);
923		1223
924	load_perl (aTHX_ &temp); /* this will get rid of defsv etc.. */	1224	load_perl (aTHX_ &temp);
925		1225
926	coro->mainstack = 0;	1226	coro->slot = 0;
927	}	1227	}
928		1228
929	cctx_destroy (coro->cctx);	1229	cctx_destroy (coro->cctx);
930	SvREFCNT_dec (coro->args);	1230	SvREFCNT_dec (coro->args);
931		1231
932	if (coro->next) coro->next->prev = coro->prev;	1232	if (coro->next) coro->next->prev = coro->prev;
933	if (coro->prev) coro->prev->next = coro->next;	1233	if (coro->prev) coro->prev->next = coro->next;
934	if (coro == first) first = coro->next;	1234	if (coro == coro_first) coro_first = coro->next;
935		1235
936	return 1;	1236	return 1;
937	}	1237	}
938		1238
939	static int	1239	static int
…		…
972	#else	1272	#else
973	# define MGf_DUP 0	1273	# define MGf_DUP 0
974	#endif	1274	#endif
975	};	1275	};
976		1276
977	static struct coro *
978	SvSTATE_ (pTHX_ SV *coro)
979	{
980	HV *stash;
981	MAGIC *mg;
982
983	if (SvROK (coro))
984	coro = SvRV (coro);
985
986	stash = SvSTASH (coro);
987	if (stash != coro_stash && stash != coro_state_stash)
988	{
989	/* very slow, but rare, check */
990	if (!sv_derived_from (sv_2mortal (newRV_inc (coro)), "Coro::State"))
991	croak ("Coro::State object required");
992	}
993
994	mg = CORO_MAGIC (coro);
995	return (struct coro *)mg->mg_ptr;
996	}
997
998	#define SvSTATE(sv) SvSTATE_ (aTHX_ (sv))
999
1000	static void	1277	static void
1001	prepare_transfer (pTHX_ struct transfer_args *ta, SV *prev_sv, SV *next_sv)	1278	prepare_transfer (pTHX_ struct transfer_args *ta, SV *prev_sv, SV *next_sv)
1002	{	1279	{
1003	ta->prev = SvSTATE (prev_sv);	1280	ta->prev = SvSTATE (prev_sv);
1004	ta->next = SvSTATE (next_sv);	1281	ta->next = SvSTATE (next_sv);
		1282	TRANSFER_CHECK (*ta);
1005	}	1283	}
1006		1284
1007	static void	1285	static void
1008	api_transfer (SV *prev_sv, SV *next_sv)	1286	api_transfer (SV *prev_sv, SV *next_sv)
1009	{	1287	{
1010	dTHX;	1288	dTHX;
1011	struct transfer_args ta;	1289	struct transfer_args ta;
1012		1290
1013	prepare_transfer (aTHX_ &ta, prev_sv, next_sv);	1291	prepare_transfer (aTHX_ &ta, prev_sv, next_sv);
1014	TRANSFER (ta);	1292	TRANSFER (ta);
1015	}
1016
1017	static int
1018	api_save (SV *coro_sv, int new_save)
1019	{
1020	dTHX;
1021	struct coro *coro = SvSTATE (coro_sv);
1022	int old_save = coro->save;
1023
1024	if (new_save >= 0)
1025	coro->save = new_save;
1026
1027	return old_save;
1028	}	1293	}
1029		1294
1030	/** Coro ********************************************************************/	1295	/** Coro ********************************************************************/
1031		1296
1032	static void	1297	static void
…		…
1091	{	1356	{
1092	LOCK;	1357	LOCK;
1093	next_sv = coro_deq (aTHX_ PRIO_MIN);	1358	next_sv = coro_deq (aTHX_ PRIO_MIN);
1094		1359
1095	/* nothing to schedule: call the idle handler */	1360	/* nothing to schedule: call the idle handler */
1096	if (!next_sv)	1361	if (expect_false (!next_sv))
1097	{	1362	{
1098	dSP;	1363	dSP;
1099	UNLOCK;	1364	UNLOCK;
1100		1365
1101	ENTER;	1366	ENTER;
…		…
1111	}	1376	}
1112		1377
1113	ta->next = SvSTATE (next_sv);	1378	ta->next = SvSTATE (next_sv);
1114		1379
1115	/* cannot transfer to destroyed coros, skip and look for next */	1380	/* cannot transfer to destroyed coros, skip and look for next */
1116	if (ta->next->flags & CF_DESTROYED)	1381	if (expect_false (ta->next->flags & CF_DESTROYED))
1117	{	1382	{
1118	UNLOCK;	1383	UNLOCK;
1119	SvREFCNT_dec (next_sv);	1384	SvREFCNT_dec (next_sv);
1120	/* coro_nready is already taken care of by destroy */	1385	/* coro_nready is already taken care of by destroy */
1121	continue;	1386	continue;
…		…
1126	break;	1391	break;
1127	}	1392	}
1128		1393
1129	/* free this only after the transfer */	1394	/* free this only after the transfer */
1130	prev_sv = SvRV (coro_current);	1395	prev_sv = SvRV (coro_current);
1131	SvRV_set (coro_current, next_sv);
1132	ta->prev = SvSTATE (prev_sv);	1396	ta->prev = SvSTATE (prev_sv);
1133		1397	TRANSFER_CHECK (*ta);
1134	assert (ta->next->flags & CF_READY);	1398	assert (ta->next->flags & CF_READY);
1135	ta->next->flags &= ~CF_READY;	1399	ta->next->flags &= ~CF_READY;
		1400	SvRV_set (coro_current, next_sv);
1136		1401
1137	LOCK;	1402	LOCK;
1138	free_coro_mortal (aTHX);	1403	free_coro_mortal (aTHX);
1139	coro_mortal = prev_sv;	1404	coro_mortal = prev_sv;
1140	UNLOCK;	1405	UNLOCK;
…		…
1177	dTHX;	1442	dTHX;
1178	struct transfer_args ta;	1443	struct transfer_args ta;
1179		1444
1180	prepare_cede (aTHX_ &ta);	1445	prepare_cede (aTHX_ &ta);
1181		1446
1182	if (ta.prev != ta.next)	1447	if (expect_true (ta.prev != ta.next))
1183	{	1448	{
1184	TRANSFER (ta);	1449	TRANSFER (ta);
1185	return 1;	1450	return 1;
1186	}	1451	}
1187	else	1452	else
…		…
1201	}	1466	}
1202	else	1467	else
1203	return 0;	1468	return 0;
1204	}	1469	}
1205		1470
		1471	static void
		1472	api_trace (SV *coro_sv, int flags)
		1473	{
		1474	dTHX;
		1475	struct coro *coro = SvSTATE (coro_sv);
		1476
		1477	if (flags & CC_TRACE)
		1478	{
		1479	if (!coro->cctx)
		1480	coro->cctx = cctx_new ();
		1481	else if (!(coro->cctx->flags & CC_TRACE))
		1482	croak ("cannot enable tracing on coroutine with custom stack");
		1483
		1484	coro->cctx->flags |= CC_NOREUSE | (flags & (CC_TRACE | CC_TRACE_ALL));
		1485	}
		1486	else if (coro->cctx && coro->cctx->flags & CC_TRACE)
		1487	{
		1488	coro->cctx->flags &= ~(CC_TRACE | CC_TRACE_ALL);
		1489
		1490	if (coro->flags & CF_RUNNING)
		1491	PL_runops = RUNOPS_DEFAULT;
		1492	else
		1493	coro->slot->runops = RUNOPS_DEFAULT;
		1494	}
		1495	}
		1496
1206	MODULE = Coro::State PACKAGE = Coro::State	1497	MODULE = Coro::State PACKAGE = Coro::State PREFIX = api_
1207		1498
1208	PROTOTYPES: DISABLE	1499	PROTOTYPES: DISABLE
1209		1500
1210	BOOT:	1501	BOOT:
1211	{	1502	{
1212	#ifdef USE_ITHREADS	1503	#ifdef USE_ITHREADS
1213	MUTEX_INIT (&coro_mutex);	1504	MUTEX_INIT (&coro_mutex);
1214	#endif	1505	#endif
1215	BOOT_PAGESIZE;	1506	BOOT_PAGESIZE;
1216		1507
		1508	irsgv = gv_fetchpv ("/" , GV_ADD|GV_NOTQUAL, SVt_PV);
		1509	stdoutgv = gv_fetchpv ("STDOUT", GV_ADD|GV_NOTQUAL, SVt_PVIO);
		1510
		1511	hv_sig = coro_get_hv ("SIG", TRUE);
		1512	sv_diehook = coro_get_sv ("Coro::State::DIEHOOK" , TRUE);
		1513	sv_warnhook = coro_get_sv ("Coro::State::WARNHOOK", TRUE);
		1514
		1515	if (!PL_diehook ) hv_store (hv_sig, "__DIE__" , sizeof ("__DIE__" ) - 1, SvREFCNT_inc (sv_diehook ), 0);
		1516	if (!PL_warnhook) hv_store (hv_sig, "__WARN__", sizeof ("__WARN__") - 1, SvREFCNT_inc (sv_warnhook), 0);
		1517
1217	coro_state_stash = gv_stashpv ("Coro::State", TRUE);	1518	coro_state_stash = gv_stashpv ("Coro::State", TRUE);
1218		1519
1219	newCONSTSUB (coro_state_stash, "SAVE_DEFAV", newSViv (CORO_SAVE_DEFAV));	1520	newCONSTSUB (coro_state_stash, "CC_TRACE" , newSViv (CC_TRACE));
1220	newCONSTSUB (coro_state_stash, "SAVE_DEFSV", newSViv (CORO_SAVE_DEFSV));	1521	newCONSTSUB (coro_state_stash, "CC_TRACE_SUB" , newSViv (CC_TRACE_SUB));
1221	newCONSTSUB (coro_state_stash, "SAVE_ERRSV", newSViv (CORO_SAVE_ERRSV));
1222	newCONSTSUB (coro_state_stash, "SAVE_IRSSV", newSViv (CORO_SAVE_IRSSV));
1223	newCONSTSUB (coro_state_stash, "SAVE_DEFFH", newSViv (CORO_SAVE_DEFFH));
1224	newCONSTSUB (coro_state_stash, "SAVE_DEF", newSViv (CORO_SAVE_DEF));	1522	newCONSTSUB (coro_state_stash, "CC_TRACE_LINE", newSViv (CC_TRACE_LINE));
1225	newCONSTSUB (coro_state_stash, "SAVE_ALL", newSViv (CORO_SAVE_ALL));	1523	newCONSTSUB (coro_state_stash, "CC_TRACE_ALL" , newSViv (CC_TRACE_ALL));
1226		1524
1227	main_mainstack = PL_mainstack;	1525	main_mainstack = PL_mainstack;
1228	main_top_env = PL_top_env;	1526	main_top_env = PL_top_env;
1229		1527
1230	while (main_top_env->je_prev)	1528	while (main_top_env->je_prev)
1231	main_top_env = main_top_env->je_prev;	1529	main_top_env = main_top_env->je_prev;
1232		1530
1233	coroapi.ver = CORO_API_VERSION;	1531	coroapi.ver = CORO_API_VERSION;
		1532	coroapi.rev = CORO_API_REVISION;
1234	coroapi.transfer = api_transfer;	1533	coroapi.transfer = api_transfer;
1235		1534
1236	assert (("PRIO_NORMAL must be 0", !PRIO_NORMAL));	1535	assert (("PRIO_NORMAL must be 0", !PRIO_NORMAL));
1237	}	1536	}
1238		1537
…		…
1243	struct coro *coro;	1542	struct coro *coro;
1244	HV *hv;	1543	HV *hv;
1245	int i;	1544	int i;
1246		1545
1247	Newz (0, coro, 1, struct coro);	1546	Newz (0, coro, 1, struct coro);
1248	coro->args = newAV ();	1547	coro->args = newAV ();
1249	coro->save = CORO_SAVE_DEF;
1250	coro->flags = CF_NEW;	1548	coro->flags = CF_NEW;
1251		1549
1252	if (first) first->prev = coro;	1550	if (coro_first) coro_first->prev = coro;
1253	coro->next = first;	1551	coro->next = coro_first;
1254	first = coro;	1552	coro_first = coro;
1255		1553
1256	coro->hv = hv = newHV ();	1554	coro->hv = hv = newHV ();
1257	sv_magicext ((SV *)hv, 0, PERL_MAGIC_ext, &coro_state_vtbl, (char *)coro, 0)->mg_flags |= MGf_DUP;	1555	sv_magicext ((SV *)hv, 0, PERL_MAGIC_ext, &coro_state_vtbl, (char *)coro, 0)->mg_flags |= MGf_DUP;
1258	RETVAL = sv_bless (newRV_noinc ((SV *)hv), gv_stashpv (klass, 1));	1556	RETVAL = sv_bless (newRV_noinc ((SV *)hv), gv_stashpv (klass, 1));
1259		1557
		1558	av_extend (coro->args, items - 1);
1260	for (i = 1; i < items; i++)	1559	for (i = 1; i < items; i++)
1261	av_push (coro->args, newSVsv (ST (i)));	1560	av_push (coro->args, newSVsv (ST (i)));
1262	}	1561	}
1263	OUTPUT:	1562	OUTPUT:
1264	RETVAL	1563	RETVAL
1265		1564
1266	int	1565	# these not obviously related functions are all rolled into the same xs
1267	save (SV *coro, int new_save = -1)	1566	# function to increase chances that they all will call transfer with the same
1268	CODE:	1567	# stack offset
1269	RETVAL = api_save (coro, new_save);
1270	OUTPUT:
1271	RETVAL
1272
1273	int
1274	save_also (SV *coro_sv, int save_also)
1275	CODE:
1276	{
1277	struct coro *coro = SvSTATE (coro_sv);
1278	RETVAL = coro->save;
1279	coro->save |= save_also;
1280	}
1281	OUTPUT:
1282	RETVAL
1283
1284	void	1568	void
1285	_set_stacklevel (...)	1569	_set_stacklevel (...)
1286	ALIAS:	1570	ALIAS:
1287	Coro::State::transfer = 1	1571	Coro::State::transfer = 1
1288	Coro::schedule = 2	1572	Coro::schedule = 2
…		…
1320		1604
1321	break;	1605	break;
1322	}	1606	}
1323		1607
1324	BARRIER;	1608	BARRIER;
		1609	PUTBACK;
1325	TRANSFER (ta);	1610	TRANSFER (ta);
1326		1611	SPAGAIN; /* might be the sp of a different coroutine now */
1327	if (GIMME_V != G_VOID && ta.next != ta.prev)	1612	/* be extra careful not to ever do anything after TRANSFER */
1328	XSRETURN_YES;
1329	}	1613	}
1330		1614
1331	bool	1615	bool
1332	_destroy (SV *coro_sv)	1616	_destroy (SV *coro_sv)
1333	CODE:	1617	CODE:
…		…
1368	void	1652	void
1369	list ()	1653	list ()
1370	PPCODE:	1654	PPCODE:
1371	{	1655	{
1372	struct coro *coro;	1656	struct coro *coro;
1373	for (coro = first; coro; coro = coro->next)	1657	for (coro = coro_first; coro; coro = coro->next)
1374	if (coro->hv)	1658	if (coro->hv)
1375	XPUSHs (sv_2mortal (newRV_inc ((SV *)coro->hv)));	1659	XPUSHs (sv_2mortal (newRV_inc ((SV *)coro->hv)));
1376	}	1660	}
1377		1661
1378	void	1662	void
1379	_eval (Coro::State coro, SV *coderef)	1663	call (Coro::State coro, SV *coderef)
		1664	ALIAS:
		1665	eval = 1
1380	CODE:	1666	CODE:
1381	{	1667	{
1382	if (coro->mainstack)	1668	if (coro->mainstack)
1383	{	1669	{
1384	struct coro temp;	1670	struct coro temp;
1385	Zero (&temp, 1, struct coro);
1386	temp.save = CORO_SAVE_ALL;
1387		1671
1388	if (!(coro->flags & CF_RUNNING))	1672	if (!(coro->flags & CF_RUNNING))
1389	{	1673	{
1390	save_perl (aTHX_ &temp);	1674	save_perl (aTHX_ &temp);
1391	load_perl (aTHX_ coro);	1675	load_perl (aTHX_ coro);
…		…
1393		1677
1394	{	1678	{
1395	dSP;	1679	dSP;
1396	ENTER;	1680	ENTER;
1397	SAVETMPS;	1681	SAVETMPS;
		1682	PUTBACK;
		1683	PUSHSTACK;
1398	PUSHMARK (SP);	1684	PUSHMARK (SP);
1399	PUTBACK;	1685
		1686	if (ix)
		1687	eval_sv (coderef, 0);
		1688	else
1400	call_sv (coderef, G_KEEPERR | G_EVAL | G_VOID | G_DISCARD);	1689	call_sv (coderef, G_KEEPERR | G_EVAL | G_VOID | G_DISCARD);
		1690
		1691	POPSTACK;
1401	SPAGAIN;	1692	SPAGAIN;
1402	FREETMPS;	1693	FREETMPS;
1403	LEAVE;	1694	LEAVE;
1404	PUTBACK;	1695	PUTBACK;
1405	}	1696	}
…		…
1409	save_perl (aTHX_ coro);	1700	save_perl (aTHX_ coro);
1410	load_perl (aTHX_ &temp);	1701	load_perl (aTHX_ &temp);
1411	}	1702	}
1412	}	1703	}
1413	}	1704	}
1414		1705
1415	SV *	1706	SV *
1416	is_ready (Coro::State coro)	1707	is_ready (Coro::State coro)
1417	PROTOTYPE: $	1708	PROTOTYPE: $
1418	ALIAS:	1709	ALIAS:
1419	is_ready = CF_READY	1710	is_ready = CF_READY
…		…
1423	CODE:	1714	CODE:
1424	RETVAL = boolSV (coro->flags & ix);	1715	RETVAL = boolSV (coro->flags & ix);
1425	OUTPUT:	1716	OUTPUT:
1426	RETVAL	1717	RETVAL
1427		1718
		1719	void
		1720	api_trace (SV *coro, int flags = CC_TRACE | CC_TRACE_SUB)
		1721
		1722	SV *
		1723	has_stack (Coro::State coro)
		1724	PROTOTYPE: $
		1725	CODE:
		1726	RETVAL = boolSV (!!coro->cctx);
		1727	OUTPUT:
		1728	RETVAL
		1729
		1730	int
		1731	is_traced (Coro::State coro)
		1732	PROTOTYPE: $
		1733	CODE:
		1734	RETVAL = (coro->cctx ? coro->cctx->flags : 0) & CC_TRACE_ALL;
		1735	OUTPUT:
		1736	RETVAL
		1737
1428	IV	1738	IV
1429	rss (Coro::State coro)	1739	rss (Coro::State coro)
1430	PROTOTYPE: $	1740	PROTOTYPE: $
		1741	ALIAS:
		1742	usecount = 1
1431	CODE:	1743	CODE:
1432	RETVAL = coro_rss (coro);	1744	switch (ix)
		1745	{
		1746	case 0: RETVAL = coro_rss (aTHX_ coro); break;
		1747	case 1: RETVAL = coro->usecount; break;
		1748	}
1433	OUTPUT:	1749	OUTPUT:
1434	RETVAL	1750	RETVAL
1435		1751
1436		1752
1437	MODULE = Coro::State PACKAGE = Coro	1753	MODULE = Coro::State PACKAGE = Coro
1438		1754
1439	BOOT:	1755	BOOT:
1440	{	1756	{
1441	int i;	1757	int i;
1442		1758
		1759	sv_pool_rss = coro_get_sv ("Coro::POOL_RSS" , TRUE);
		1760	sv_pool_size = coro_get_sv ("Coro::POOL_SIZE" , TRUE);
		1761	av_async_pool = coro_get_av ("Coro::async_pool", TRUE);
		1762
		1763	coro_current = coro_get_sv ("Coro::current", FALSE);
		1764	SvREADONLY_on (coro_current);
		1765
1443	coro_stash = gv_stashpv ("Coro", TRUE);	1766	coro_stash = gv_stashpv ("Coro", TRUE);
1444		1767
1445	newCONSTSUB (coro_stash, "PRIO_MAX", newSViv (PRIO_MAX));	1768	newCONSTSUB (coro_stash, "PRIO_MAX", newSViv (PRIO_MAX));
1446	newCONSTSUB (coro_stash, "PRIO_HIGH", newSViv (PRIO_HIGH));	1769	newCONSTSUB (coro_stash, "PRIO_HIGH", newSViv (PRIO_HIGH));
1447	newCONSTSUB (coro_stash, "PRIO_NORMAL", newSViv (PRIO_NORMAL));	1770	newCONSTSUB (coro_stash, "PRIO_NORMAL", newSViv (PRIO_NORMAL));
1448	newCONSTSUB (coro_stash, "PRIO_LOW", newSViv (PRIO_LOW));	1771	newCONSTSUB (coro_stash, "PRIO_LOW", newSViv (PRIO_LOW));
1449	newCONSTSUB (coro_stash, "PRIO_IDLE", newSViv (PRIO_IDLE));	1772	newCONSTSUB (coro_stash, "PRIO_IDLE", newSViv (PRIO_IDLE));
1450	newCONSTSUB (coro_stash, "PRIO_MIN", newSViv (PRIO_MIN));	1773	newCONSTSUB (coro_stash, "PRIO_MIN", newSViv (PRIO_MIN));
1451		1774
1452	coro_current = get_sv ("Coro::current", FALSE);
1453	SvREADONLY_on (coro_current);
1454
1455	for (i = PRIO_MAX - PRIO_MIN + 1; i--; )	1775	for (i = PRIO_MAX - PRIO_MIN + 1; i--; )
1456	coro_ready[i] = newAV ();	1776	coro_ready[i] = newAV ();
1457		1777
1458	{	1778	{
1459	SV *sv = perl_get_sv("Coro::API", 1);	1779	SV *sv = perl_get_sv ("Coro::API", TRUE);
		1780	perl_get_sv ("Coro::API", TRUE); /* silence 5.10 warning */
1460		1781
1461	coroapi.schedule = api_schedule;	1782	coroapi.schedule = api_schedule;
1462	coroapi.save = api_save;
1463	coroapi.cede = api_cede;	1783	coroapi.cede = api_cede;
1464	coroapi.cede_notself = api_cede_notself;	1784	coroapi.cede_notself = api_cede_notself;
1465	coroapi.ready = api_ready;	1785	coroapi.ready = api_ready;
1466	coroapi.is_ready = api_is_ready;	1786	coroapi.is_ready = api_is_ready;
1467	coroapi.nready = &coro_nready;	1787	coroapi.nready = &coro_nready;
…		…
1516	CODE:	1836	CODE:
1517	RETVAL = coro_nready;	1837	RETVAL = coro_nready;
1518	OUTPUT:	1838	OUTPUT:
1519	RETVAL	1839	RETVAL
1520		1840
		1841	void
		1842	throw (Coro::State self, SV *throw = &PL_sv_undef)
		1843	PROTOTYPE: $;$
		1844	CODE:
		1845	SvREFCNT_dec (self->throw);
		1846	self->throw = SvOK (throw) ? newSVsv (throw) : 0;
		1847
		1848	# for async_pool speedup
		1849	void
		1850	_pool_1 (SV *cb)
		1851	CODE:
		1852	{
		1853	struct coro *coro = SvSTATE (coro_current);
		1854	HV *hv = (HV *)SvRV (coro_current);
		1855	AV *defav = GvAV (PL_defgv);
		1856	SV *invoke = hv_delete (hv, "_invoke", sizeof ("_invoke") - 1, 0);
		1857	AV *invoke_av;
		1858	int i, len;
		1859
		1860	if (!invoke)
		1861	croak ("\3async_pool terminate\2\n");
		1862
		1863	SvREFCNT_dec (coro->saved_deffh);
		1864	coro->saved_deffh = SvREFCNT_inc ((SV *)PL_defoutgv);
		1865
		1866	hv_store (hv, "desc", sizeof ("desc") - 1,
		1867	newSVpvn ("[async_pool]", sizeof ("[async_pool]") - 1), 0);
		1868
		1869	invoke_av = (AV *)SvRV (invoke);
		1870	len = av_len (invoke_av);
		1871
		1872	sv_setsv (cb, AvARRAY (invoke_av)[0]);
		1873
		1874	if (len > 0)
		1875	{
		1876	av_fill (defav, len - 1);
		1877	for (i = 0; i < len; ++i)
		1878	av_store (defav, i, SvREFCNT_inc (AvARRAY (invoke_av)[i + 1]));
		1879	}
		1880
		1881	SvREFCNT_dec (invoke);
		1882	}
		1883
		1884	void
		1885	_pool_2 (SV *cb)
		1886	CODE:
		1887	{
		1888	struct coro *coro = SvSTATE (coro_current);
		1889
		1890	sv_setsv (cb, &PL_sv_undef);
		1891
		1892	SvREFCNT_dec ((SV *)PL_defoutgv); PL_defoutgv = (GV *)coro->saved_deffh;
		1893	coro->saved_deffh = 0;
		1894
		1895	if (coro_rss (aTHX_ coro) > SvIV (sv_pool_rss)
		1896	|| av_len (av_async_pool) + 1 >= SvIV (sv_pool_size))
		1897	croak ("\3async_pool terminate\2\n");
		1898
		1899	av_clear (GvAV (PL_defgv));
		1900	hv_store ((HV *)SvRV (coro_current), "desc", sizeof ("desc") - 1,
		1901	newSVpvn ("[async_pool idle]", sizeof ("[async_pool idle]") - 1), 0);
		1902
		1903	coro->prio = 0;
		1904
		1905	if (coro->cctx && (coro->cctx->flags & CC_TRACE))
		1906	api_trace (coro_current, 0);
		1907
		1908	av_push (av_async_pool, newSVsv (coro_current));
		1909	}
		1910
		1911
1521	MODULE = Coro::State PACKAGE = Coro::AIO	1912	MODULE = Coro::State PACKAGE = Coro::AIO
1522		1913
1523	SV *	1914	SV *
1524	_get_state ()	1915	_get_state ()
1525	CODE:	1916	CODE:

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