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/cvs/Coro/Coro/State.xs

Comparing Coro/Coro/State.xs (file contents):
Revision 1.163 by root, Mon Sep 24 18:30:58 2007 UTC vs.
Revision 1.209 by root, Wed Oct 10 02:58:17 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
…		…
98	#define IN_DESTRUCT (PL_main_cv == Nullcv)	108	#define IN_DESTRUCT (PL_main_cv == Nullcv)
99		109
100	#if __GNUC__ >= 3	110	#if __GNUC__ >= 3
101	# define attribute(x) __attribute__(x)	111	# define attribute(x) __attribute__(x)
102	# define BARRIER __asm__ __volatile__ ("" : : : "memory")	112	# define BARRIER __asm__ __volatile__ ("" : : : "memory")
		113	# define expect(expr,value) __builtin_expect ((expr),(value))
103	#else	114	#else
104	# define attribute(x)	115	# define attribute(x)
105	# define BARRIER	116	# define BARRIER
		117	# define expect(expr,value) (expr)
106	#endif	118	#endif
		119
		120	#define expect_false(expr) expect ((expr) != 0, 0)
		121	#define expect_true(expr) expect ((expr) != 0, 1)
107		122
108	#define NOINLINE attribute ((noinline))	123	#define NOINLINE attribute ((noinline))
109		124
110	#include "CoroAPI.h"	125	#include "CoroAPI.h"
111		126
…		…
116	#else	131	#else
117	# define LOCK (void)0	132	# define LOCK (void)0
118	# define UNLOCK (void)0	133	# define UNLOCK (void)0
119	#endif	134	#endif
120		135
		136	#define strpair(const) const, sizeof (const) - 1
		137
121	/* helper storage struct for Coro::AIO */	138	/* helper storage struct for Coro::AIO */
122	struct io_state	139	struct io_state
123	{	140	{
124	int errorno;	141	int errorno;
125	I32 laststype;	142	I32 laststype;
…		…
132	static AV *main_mainstack; /* used to differentiate between $main and others */	149	static AV *main_mainstack; /* used to differentiate between $main and others */
133	static JMPENV *main_top_env;	150	static JMPENV *main_top_env;
134	static HV *coro_state_stash, *coro_stash;	151	static HV *coro_state_stash, *coro_stash;
135	static SV *coro_mortal; /* will be freed after next transfer */	152	static SV *coro_mortal; /* will be freed after next transfer */
136		153
		154	static GV *irsgv; /* $/ */
		155	static GV *stdoutgv; /* *STDOUT */
		156
		157	static HV *hv_sig; /* %SIG */
		158	static SV *sv_diehook;
		159	static SV *sv_warnhook;
		160
137	/* async_pool helper stuff */	161	/* async_pool helper stuff */
138	static SV *sv_pool_rss;	162	static SV *sv_pool_rss;
139	static SV *sv_pool_size;	163	static SV *sv_pool_size;
140	static AV *av_async_pool;	164	static AV *av_async_pool;
141		165
142	static struct coro_cctx *cctx_first;	166	static struct coro_cctx *cctx_first[3]; /* index by GIMME_V type, void, scalar, array */
143	static int cctx_count, cctx_idle;	167	static int cctx_count, cctx_idle[3];
		168
		169	enum {
		170	CC_MAPPED = 0x01,
		171	CC_NOREUSE = 0x02, /* throw this away after tracing */
		172	CC_TRACE = 0x04,
		173	CC_TRACE_SUB = 0x08, /* trace sub calls */
		174	CC_TRACE_LINE = 0x10, /* trace each statement */
		175	CC_TRACE_ALL = CC_TRACE_SUB | CC_TRACE_LINE,
		176	};
144		177
145	/* this is a structure representing a c-level coroutine */	178	/* this is a structure representing a c-level coroutine */
146	typedef struct coro_cctx {	179	typedef struct coro_cctx {
147	struct coro_cctx *next;	180	struct coro_cctx *next;
148		181
…		…
157	coro_context cctx;	190	coro_context cctx;
158		191
159	#if CORO_USE_VALGRIND	192	#if CORO_USE_VALGRIND
160	int valgrind_id;	193	int valgrind_id;
161	#endif	194	#endif
162	char inuse, mapped;	195	unsigned char flags;
163	} coro_cctx;	196	} coro_cctx;
164		197
165	enum {	198	enum {
166	CF_RUNNING = 0x0001, /* coroutine is running */	199	CF_RUNNING = 0x0001, /* coroutine is running */
167	CF_READY = 0x0002, /* coroutine is ready */	200	CF_READY = 0x0002, /* coroutine is ready */
168	CF_NEW = 0x0004, /* has never been switched to */	201	CF_NEW = 0x0004, /* has never been switched to */
169	CF_DESTROYED = 0x0008, /* coroutine data has been freed */	202	CF_DESTROYED = 0x0008, /* coroutine data has been freed */
170	};	203	};
171		204
		205	/* the structure where most of the perl state is stored, overlaid on the cxstack */
		206	typedef struct {
		207	SV *defsv;
		208	AV *defav;
		209	SV *errsv;
		210	SV *irsgv;
		211	#define VAR(name,type) type name;
		212	# include "state.h"
		213	#undef VAR
		214	} perl_slots;
		215
		216	#define SLOT_COUNT ((sizeof (perl_slots) + sizeof (PERL_CONTEXT) - 1) / sizeof (PERL_CONTEXT))
		217
172	/* this is a structure representing a perl-level coroutine */	218	/* this is a structure representing a perl-level coroutine */
173	struct coro {	219	struct coro {
174	/* the c coroutine allocated to this perl coroutine, if any */	220	/* the c coroutine allocated to this perl coroutine, if any */
175	coro_cctx *cctx;	221	coro_cctx *cctx;
		222	int gimme;
176		223
		224	/* process data */
		225	AV *mainstack;
		226	perl_slots *slot; /* basically the saved sp */
		227
177	/* data associated with this coroutine (initial args) */	228	AV *args; /* data associated with this coroutine (initial args) */
178	AV *args;	229	int refcnt; /* coroutines are refcounted, yes */
179	int refcnt;
180	int save; /* CORO_SAVE flags */
181	int flags; /* CF_ flags */	230	int flags; /* CF_ flags */
		231	HV *hv; /* the perl hash associated with this coro, if any */
182		232
183	/* optionally saved, might be zero */	233	/* statistics */
184	AV *defav; /* @_ */	234	int usecount; /* number of transfers to this coro */
185	SV *defsv; /* $_ */
186	SV *errsv; /* $@ */
187	GV *deffh; /* default filehandle */
188	SV *irssv; /* $/ */
189	SV *irssv_sv; /* real $/ cache */
190
191	#define VAR(name,type) type name;
192	# include "state.h"
193	#undef VAR
194		235
195	/* coro process data */	236	/* coro process data */
196	int prio;	237	int prio;
		238	SV *throw; /* exception to be thrown */
		239
		240	/* async_pool */
		241	SV *saved_deffh;
197		242
198	/* linked list */	243	/* linked list */
199	struct coro *next, *prev;	244	struct coro *next, *prev;
200	HV *hv; /* the perl hash associated with this coro, if any */
201	};	245	};
202		246
203	typedef struct coro *Coro__State;	247	typedef struct coro *Coro__State;
204	typedef struct coro *Coro__State_or_hashref;	248	typedef struct coro *Coro__State_or_hashref;
205		249
…		…
217	static AV *coro_ready [PRIO_MAX-PRIO_MIN+1];	261	static AV *coro_ready [PRIO_MAX-PRIO_MIN+1];
218	static int coro_nready;	262	static int coro_nready;
219	static struct coro *coro_first;	263	static struct coro *coro_first;
220		264
221	/** lowlevel stuff **********************************************************/	265	/** lowlevel stuff **********************************************************/
		266
		267	static SV *
		268	coro_get_sv (const char *name, int create)
		269	{
		270	#if PERL_VERSION_ATLEAST (5,9,0)
		271	/* silence stupid and wrong 5.10 warning that I am unable to switch off */
		272	get_sv (name, create);
		273	#endif
		274	return get_sv (name, create);
		275	}
		276
		277	static AV *
		278	coro_get_av (const char *name, int create)
		279	{
		280	#if PERL_VERSION_ATLEAST (5,9,0)
		281	/* silence stupid and wrong 5.10 warning that I am unable to switch off */
		282	get_av (name, create);
		283	#endif
		284	return get_av (name, create);
		285	}
		286
		287	static HV *
		288	coro_get_hv (const char *name, int create)
		289	{
		290	#if PERL_VERSION_ATLEAST (5,9,0)
		291	/* silence stupid and wrong 5.10 warning that I am unable to switch off */
		292	get_hv (name, create);
		293	#endif
		294	return get_hv (name, create);
		295	}
222		296
223	static AV *	297	static AV *
224	coro_clone_padlist (pTHX_ CV *cv)	298	coro_clone_padlist (pTHX_ CV *cv)
225	{	299	{
226	AV *padlist = CvPADLIST (cv);	300	AV *padlist = CvPADLIST (cv);
…		…
290	? SvMAGIC (cv)->mg_type == PERL_MAGIC_coro \	364	? SvMAGIC (cv)->mg_type == PERL_MAGIC_coro \
291	? SvMAGIC (cv) \	365	? SvMAGIC (cv) \
292	: mg_find ((SV *)cv, PERL_MAGIC_coro) \	366	: mg_find ((SV *)cv, PERL_MAGIC_coro) \
293	: 0	367	: 0
294		368
		369	static struct coro *
		370	SvSTATE_ (pTHX_ SV *coro)
		371	{
		372	HV *stash;
		373	MAGIC *mg;
		374
		375	if (SvROK (coro))
		376	coro = SvRV (coro);
		377
		378	if (expect_false (SvTYPE (coro) != SVt_PVHV))
		379	croak ("Coro::State object required");
		380
		381	stash = SvSTASH (coro);
		382	if (expect_false (stash != coro_stash && stash != coro_state_stash))
		383	{
		384	/* very slow, but rare, check */
		385	if (!sv_derived_from (sv_2mortal (newRV_inc (coro)), "Coro::State"))
		386	croak ("Coro::State object required");
		387	}
		388
		389	mg = CORO_MAGIC (coro);
		390	return (struct coro *)mg->mg_ptr;
		391	}
		392
		393	#define SvSTATE(sv) SvSTATE_ (aTHX_ (sv))
		394
295	/* the next two functions merely cache the padlists */	395	/* the next two functions merely cache the padlists */
296	static void	396	static void
297	get_padlist (pTHX_ CV *cv)	397	get_padlist (pTHX_ CV *cv)
298	{	398	{
299	MAGIC *mg = CORO_MAGIC (cv);	399	MAGIC *mg = CORO_MAGIC (cv);
300	AV *av;	400	AV *av;
301		401
302	if (mg && AvFILLp ((av = (AV *)mg->mg_obj)) >= 0)	402	if (expect_true (mg && AvFILLp ((av = (AV *)mg->mg_obj)) >= 0))
303	CvPADLIST (cv) = (AV *)AvARRAY (av)[AvFILLp (av)--];	403	CvPADLIST (cv) = (AV *)AvARRAY (av)[AvFILLp (av)--];
304	else	404	else
305	{	405	{
306	#if CORO_PREFER_PERL_FUNCTIONS	406	#if CORO_PREFER_PERL_FUNCTIONS
307	/* this is probably cleaner, but also slower? */	407	/* this is probably cleaner, but also slower? */
…		…
319	put_padlist (pTHX_ CV *cv)	419	put_padlist (pTHX_ CV *cv)
320	{	420	{
321	MAGIC *mg = CORO_MAGIC (cv);	421	MAGIC *mg = CORO_MAGIC (cv);
322	AV *av;	422	AV *av;
323		423
324	if (!mg)	424	if (expect_false (!mg))
325	{	425	{
326	sv_magic ((SV *)cv, 0, PERL_MAGIC_coro, 0, 0);	426	sv_magic ((SV *)cv, 0, PERL_MAGIC_coro, 0, 0);
327	mg = mg_find ((SV *)cv, PERL_MAGIC_coro);	427	mg = mg_find ((SV *)cv, PERL_MAGIC_coro);
328	mg->mg_virtual = &vtbl_coro;	428	mg->mg_virtual = &vtbl_coro;
329	mg->mg_obj = (SV *)newAV ();	429	mg->mg_obj = (SV *)newAV ();
330	}	430	}
331		431
332	av = (AV *)mg->mg_obj;	432	av = (AV *)mg->mg_obj;
333		433
334	if (AvFILLp (av) >= AvMAX (av))	434	if (expect_false (AvFILLp (av) >= AvMAX (av)))
335	av_extend (av, AvMAX (av) + 1);	435	av_extend (av, AvMAX (av) + 1);
336		436
337	AvARRAY (av)[++AvFILLp (av)] = (SV *)CvPADLIST (cv);	437	AvARRAY (av)[++AvFILLp (av)] = (SV *)CvPADLIST (cv);
338	}	438	}
339		439
340	/** load & save, init *******************************************************/	440	/** load & save, init *******************************************************/
341
342	#define SB do {
343	#define SE } while (0)
344
345	#define REPLACE_SV(sv,val) SB SvREFCNT_dec (sv); (sv) = (val); (val) = 0; SE
346		441
347	static void	442	static void
348	load_perl (pTHX_ Coro__State c)	443	load_perl (pTHX_ Coro__State c)
349	{	444	{
		445	perl_slots *slot = c->slot;
		446	c->slot = 0;
		447
		448	PL_mainstack = c->mainstack;
		449
		450	GvSV (PL_defgv) = slot->defsv;
		451	GvAV (PL_defgv) = slot->defav;
		452	GvSV (PL_errgv) = slot->errsv;
		453	GvSV (irsgv) = slot->irsgv;
		454
350	#define VAR(name,type) PL_ ## name = c->name;	455	#define VAR(name,type) PL_ ## name = slot->name;
351	# include "state.h"	456	# include "state.h"
352	#undef VAR	457	#undef VAR
353		458
354	if (c->defav) REPLACE_SV (GvAV (PL_defgv), c->defav);	459	/*hv_store (hv_sig, strpair ("__DIE__" ), SvREFCNT_inc (sv_diehook ), 0);*/
355	if (c->defsv) REPLACE_SV (DEFSV , c->defsv);	460	/*hv_store (hv_sig, strpair ("__WARN__"), SvREFCNT_inc (sv_warnhook), 0);*/
356	if (c->errsv) REPLACE_SV (ERRSV , c->errsv);
357	if (c->deffh) REPLACE_SV (PL_defoutgv , c->deffh);
358
359	if (c->irssv)
360	{
361	if (c->irssv == PL_rs || sv_eq (PL_rs, c->irssv))
362	{
363	SvREFCNT_dec (c->irssv);
364	c->irssv = 0;
365	}
366	else
367	{
368	REPLACE_SV (PL_rs, c->irssv);
369	if (!c->irssv_sv) c->irssv_sv = get_sv ("/", 0);
370	sv_setsv (c->irssv_sv, PL_rs);
371	}
372	}
373		461
374	{	462	{
375	dSP;	463	dSP;
		464
376	CV *cv;	465	CV *cv;
377		466
378	/* now do the ugly restore mess */	467	/* now do the ugly restore mess */
379	while ((cv = (CV *)POPs))	468	while (expect_true (cv = (CV *)POPs))
380	{	469	{
381	put_padlist (aTHX_ cv); /* mark this padlist as available */	470	put_padlist (aTHX_ cv); /* mark this padlist as available */
382	CvDEPTH (cv) = PTR2IV (POPs);	471	CvDEPTH (cv) = PTR2IV (POPs);
383	CvPADLIST (cv) = (AV *)POPs;	472	CvPADLIST (cv) = (AV *)POPs;
384	}	473	}
…		…
403		492
404	XPUSHs (Nullsv);	493	XPUSHs (Nullsv);
405	/* this loop was inspired by pp_caller */	494	/* this loop was inspired by pp_caller */
406	for (;;)	495	for (;;)
407	{	496	{
408	while (cxix >= 0)	497	while (expect_true (cxix >= 0))
409	{	498	{
410	PERL_CONTEXT *cx = &ccstk[cxix--];	499	PERL_CONTEXT *cx = &ccstk[cxix--];
411		500
412	if (CxTYPE (cx) == CXt_SUB || CxTYPE (cx) == CXt_FORMAT)	501	if (expect_true (CxTYPE (cx) == CXt_SUB || CxTYPE (cx) == CXt_FORMAT))
413	{	502	{
414	CV *cv = cx->blk_sub.cv;	503	CV *cv = cx->blk_sub.cv;
415		504
416	if (CvDEPTH (cv))	505	if (expect_true (CvDEPTH (cv)))
417	{	506	{
418	EXTEND (SP, 3);	507	EXTEND (SP, 3);
419	PUSHs ((SV *)CvPADLIST (cv));	508	PUSHs ((SV *)CvPADLIST (cv));
420	PUSHs (INT2PTR (SV *, CvDEPTH (cv)));	509	PUSHs (INT2PTR (SV *, CvDEPTH (cv)));
421	PUSHs ((SV *)cv);	510	PUSHs ((SV *)cv);
…		…
424	get_padlist (aTHX_ cv);	513	get_padlist (aTHX_ cv);
425	}	514	}
426	}	515	}
427	}	516	}
428		517
429	if (top_si->si_type == PERLSI_MAIN)	518	if (expect_true (top_si->si_type == PERLSI_MAIN))
430	break;	519	break;
431		520
432	top_si = top_si->si_prev;	521	top_si = top_si->si_prev;
433	ccstk = top_si->si_cxstack;	522	ccstk = top_si->si_cxstack;
434	cxix = top_si->si_cxix;	523	cxix = top_si->si_cxix;
435	}	524	}
436		525
437	PUTBACK;	526	PUTBACK;
438	}	527	}
439		528
440	c->defav = c->save & CORO_SAVE_DEFAV ? (AV *)SvREFCNT_inc (GvAV (PL_defgv)) : 0;	529	/* allocate some space on the context stack for our purposes */
441	c->defsv = c->save & CORO_SAVE_DEFSV ? SvREFCNT_inc (DEFSV) : 0;	530	/* we manually unroll here, as usually 2 slots is enough */
442	c->errsv = c->save & CORO_SAVE_ERRSV ? SvREFCNT_inc (ERRSV) : 0;	531	if (SLOT_COUNT >= 1) CXINC;
443	c->deffh = c->save & CORO_SAVE_DEFFH ? (GV *)SvREFCNT_inc (PL_defoutgv) : 0;	532	if (SLOT_COUNT >= 2) CXINC;
444	c->irssv = c->save & CORO_SAVE_IRSSV ? SvREFCNT_inc (PL_rs) : 0;	533	if (SLOT_COUNT >= 3) CXINC;
		534	{
		535	int i;
		536	for (i = 3; i < SLOT_COUNT; ++i)
		537	CXINC;
		538	}
		539	cxstack_ix -= SLOT_COUNT; /* undo allocation */
445		540
		541	c->mainstack = PL_mainstack;
		542
		543	{
		544	perl_slots *slot = c->slot = (perl_slots *)(cxstack + cxstack_ix + 1);
		545
		546	slot->defav = GvAV (PL_defgv);
		547	slot->defsv = DEFSV;
		548	slot->errsv = ERRSV;
		549	slot->irsgv = GvSV (irsgv);
		550
446	#define VAR(name,type)c->name = PL_ ## name;	551	#define VAR(name,type) slot->name = PL_ ## name;
447	# include "state.h"	552	# include "state.h"
448	#undef VAR	553	#undef VAR
		554	}
449	}	555	}
450		556
451	/*	557	/*
452	* allocate various perl stacks. This is an exact copy	558	* allocate various perl stacks. This is an exact copy
453	* of perl.c:init_stacks, except that it uses less memory	559	* of perl.c:init_stacks, except that it uses less memory
…		…
458	# define coro_init_stacks init_stacks	564	# define coro_init_stacks init_stacks
459	#else	565	#else
460	static void	566	static void
461	coro_init_stacks (pTHX)	567	coro_init_stacks (pTHX)
462	{	568	{
463	PL_curstackinfo = new_stackinfo(64, 6);	569	PL_curstackinfo = new_stackinfo(32, 8);
464	PL_curstackinfo->si_type = PERLSI_MAIN;	570	PL_curstackinfo->si_type = PERLSI_MAIN;
465	PL_curstack = PL_curstackinfo->si_stack;	571	PL_curstack = PL_curstackinfo->si_stack;
466	PL_mainstack = PL_curstack; /* remember in case we switch stacks */	572	PL_mainstack = PL_curstack; /* remember in case we switch stacks */
467		573
468	PL_stack_base = AvARRAY(PL_curstack);	574	PL_stack_base = AvARRAY(PL_curstack);
469	PL_stack_sp = PL_stack_base;	575	PL_stack_sp = PL_stack_base;
470	PL_stack_max = PL_stack_base + AvMAX(PL_curstack);	576	PL_stack_max = PL_stack_base + AvMAX(PL_curstack);
471		577
472	New(50,PL_tmps_stack,64,SV*);	578	New(50,PL_tmps_stack,32,SV*);
473	PL_tmps_floor = -1;	579	PL_tmps_floor = -1;
474	PL_tmps_ix = -1;	580	PL_tmps_ix = -1;
475	PL_tmps_max = 64;	581	PL_tmps_max = 32;
476		582
477	New(54,PL_markstack,16,I32);	583	New(54,PL_markstack,16,I32);
478	PL_markstack_ptr = PL_markstack;	584	PL_markstack_ptr = PL_markstack;
479	PL_markstack_max = PL_markstack + 16;	585	PL_markstack_max = PL_markstack + 16;
480		586
481	#ifdef SET_MARK_OFFSET	587	#ifdef SET_MARK_OFFSET
482	SET_MARK_OFFSET;	588	SET_MARK_OFFSET;
483	#endif	589	#endif
484		590
485	New(54,PL_scopestack,16,I32);	591	New(54,PL_scopestack,8,I32);
486	PL_scopestack_ix = 0;	592	PL_scopestack_ix = 0;
487	PL_scopestack_max = 16;	593	PL_scopestack_max = 8;
488		594
489	New(54,PL_savestack,64,ANY);	595	New(54,PL_savestack,24,ANY);
490	PL_savestack_ix = 0;	596	PL_savestack_ix = 0;
491	PL_savestack_max = 64;	597	PL_savestack_max = 24;
492		598
493	#if !PERL_VERSION_ATLEAST (5,9,0)	599	#if !PERL_VERSION_ATLEAST (5,9,0)
494	New(54,PL_retstack,4,OP*);	600	New(54,PL_retstack,4,OP*);
495	PL_retstack_ix = 0;	601	PL_retstack_ix = 0;
496	PL_retstack_max = 4;	602	PL_retstack_max = 4;
…		…
502	* destroy the stacks, the callchain etc...	608	* destroy the stacks, the callchain etc...
503	*/	609	*/
504	static void	610	static void
505	coro_destroy_stacks (pTHX)	611	coro_destroy_stacks (pTHX)
506	{	612	{
507	if (!IN_DESTRUCT)
508	{
509	/* restore all saved variables and stuff */
510	LEAVE_SCOPE (0);
511	assert (PL_tmps_floor == -1);
512
513	/* free all temporaries */
514	FREETMPS;
515	assert (PL_tmps_ix == -1);
516
517	/* unwind all extra stacks */
518	POPSTACK_TO (PL_mainstack);
519
520	/* unwind main stack */
521	dounwind (-1);
522	}
523
524	while (PL_curstackinfo->si_next)	613	while (PL_curstackinfo->si_next)
525	PL_curstackinfo = PL_curstackinfo->si_next;	614	PL_curstackinfo = PL_curstackinfo->si_next;
526		615
527	while (PL_curstackinfo)	616	while (PL_curstackinfo)
528	{	617	{
…		…
544	Safefree (PL_retstack);	633	Safefree (PL_retstack);
545	#endif	634	#endif
546	}	635	}
547		636
548	static size_t	637	static size_t
549	coro_rss (struct coro *coro)	638	coro_rss (pTHX_ struct coro *coro)
550	{	639	{
551	size_t rss = sizeof (coro);	640	size_t rss = sizeof (*coro);
552		641
553	if (coro->mainstack)	642	if (coro->mainstack)
554	{	643	{
		644	perl_slots tmp_slot;
		645	perl_slots *slot;
		646
555	if (coro->flags & CF_RUNNING)	647	if (coro->flags & CF_RUNNING)
556	{	648	{
		649	slot = &tmp_slot;
		650
557	#define VAR(name,type)coro->name = PL_ ## name;	651	#define VAR(name,type) slot->name = PL_ ## name;
558	# include "state.h"	652	# include "state.h"
559	#undef VAR	653	#undef VAR
560	}	654	}
		655	else
		656	slot = coro->slot;
561		657
562	rss += sizeof (coro->curstackinfo);	658	rss += sizeof (slot->curstackinfo);
563	rss += sizeof (struct xpvav) + (1 + AvFILL (coro->curstackinfo->si_stack)) * sizeof (SV *);
564	rss += (coro->curstackinfo->si_cxmax + 1) * sizeof (PERL_CONTEXT);	659	rss += (slot->curstackinfo->si_cxmax + 1) * sizeof (PERL_CONTEXT);
565	rss += sizeof (struct xpvav) + (1 + AvFILL (coro->curstack)) * sizeof (SV *);	660	rss += sizeof (SV) + sizeof (struct xpvav) + (1 + AvMAX (slot->curstack)) * sizeof (SV *);
566	rss += coro->tmps_max * sizeof (SV *);	661	rss += slot->tmps_max * sizeof (SV *);
567	rss += (coro->markstack_max - coro->markstack_ptr) * sizeof (I32);	662	rss += (slot->markstack_max - slot->markstack_ptr) * sizeof (I32);
568	rss += coro->scopestack_max * sizeof (I32);	663	rss += slot->scopestack_max * sizeof (I32);
569	rss += coro->savestack_max * sizeof (ANY);	664	rss += slot->savestack_max * sizeof (ANY);
570		665
571	#if !PERL_VERSION_ATLEAST (5,9,0)	666	#if !PERL_VERSION_ATLEAST (5,9,0)
572	rss += coro->retstack_max * sizeof (OP *);	667	rss += slot->retstack_max * sizeof (OP *);
573	#endif	668	#endif
574	}	669	}
575		670
576	return rss;	671	return rss;
577	}	672	}
578		673
579	/** coroutine stack handling ************************************************/	674	/** coroutine stack handling ************************************************/
580		675
581	static void	676	static void
582	setup_coro (pTHX_ struct coro *coro)	677	coro_setup (pTHX_ struct coro *coro)
583	{	678	{
584	/*	679	/*
585	* emulate part of the perl startup here.	680	* emulate part of the perl startup here.
586	*/	681	*/
587	coro_init_stacks (aTHX);	682	coro_init_stacks (aTHX);
588		683
		684	PL_runops = RUNOPS_DEFAULT;
589	PL_curcop = &PL_compiling;	685	PL_curcop = &PL_compiling;
590	PL_in_eval = EVAL_NULL;	686	PL_in_eval = EVAL_NULL;
591	PL_comppad = 0;	687	PL_comppad = 0;
592	PL_curpm = 0;	688	PL_curpm = 0;
		689	PL_curpad = 0;
593	PL_localizing = 0;	690	PL_localizing = 0;
594	PL_dirty = 0;	691	PL_dirty = 0;
595	PL_restartop = 0;	692	PL_restartop = 0;
		693	PL_diehook = 0; hv_store (hv_sig, strpair ("__DIE__" ), SvREFCNT_inc (sv_diehook ), 0);
		694	PL_warnhook = 0; hv_store (hv_sig, strpair ("__WARN__"), SvREFCNT_inc (sv_warnhook), 0);
		695
		696	GvSV (PL_defgv) = newSV (0);
		697	GvAV (PL_defgv) = coro->args; coro->args = 0;
		698	GvSV (PL_errgv) = newSV (0);
		699	GvSV (irsgv) = newSVpvn ("\n", 1); sv_magic (GvSV (irsgv), (SV *)irsgv, PERL_MAGIC_sv, "/", 0);
		700	PL_rs = newSVsv (GvSV (irsgv));
		701	PL_defoutgv = (GV *)SvREFCNT_inc (stdoutgv);
596		702
597	{	703	{
598	dSP;	704	dSP;
599	LOGOP myop;	705	LOGOP myop;
600		706
601	SvREFCNT_dec (GvAV (PL_defgv));
602	GvAV (PL_defgv) = coro->args; coro->args = 0;
603
604	Zero (&myop, 1, LOGOP);	707	Zero (&myop, 1, LOGOP);
605	myop.op_next = Nullop;	708	myop.op_next = Nullop;
606	myop.op_flags = OPf_WANT_VOID;	709	myop.op_flags = OPf_WANT_VOID;
607		710
608	PUSHMARK (SP);	711	PUSHMARK (SP);
609	XPUSHs (av_shift (GvAV (PL_defgv)));	712	XPUSHs (sv_2mortal (av_shift (GvAV (PL_defgv))));
610	PUTBACK;	713	PUTBACK;
611	PL_op = (OP *)&myop;	714	PL_op = (OP *)&myop;
612	PL_op = PL_ppaddr[OP_ENTERSUB](aTHX);	715	PL_op = PL_ppaddr[OP_ENTERSUB](aTHX);
613	SPAGAIN;	716	SPAGAIN;
		717
		718	/*
		719	* now its very tricky. the "tail" of the next transfer might end up
		720	* either in a new cctx, or an existing one.
		721	* in case of an existing one we have to take care of whatever
		722	* entersub and transfer do to the perl stack.
		723	*/
		724	ENTER;
		725	EXTEND (SP, 4);
		726	PUSHs ((SV *)0); /* items */
		727	PUSHs ((SV *)0); /* ix, set_stacklevel */
		728	PUSHs ((SV *)(sp - PL_stack_base + 1)); /* ax */
		729	PUSHs ((SV *)0); /* again */
		730	PUTBACK;
614	}	731	}
		732	}
615		733
616	ENTER; /* necessary e.g. for dounwind */	734	static void
		735	coro_destroy (pTHX_ struct coro *coro)
		736	{
		737	if (!IN_DESTRUCT)
		738	{
		739	/* restore all saved variables and stuff */
		740	LEAVE_SCOPE (0);
		741	assert (PL_tmps_floor == -1);
		742
		743	/* free all temporaries */
		744	FREETMPS;
		745	assert (PL_tmps_ix == -1);
		746
		747	/* unwind all extra stacks */
		748	POPSTACK_TO (PL_mainstack);
		749
		750	/* unwind main stack */
		751	dounwind (-1);
		752	}
		753
		754	SvREFCNT_dec (GvSV (PL_defgv));
		755	SvREFCNT_dec (GvAV (PL_defgv));
		756	SvREFCNT_dec (GvSV (PL_errgv));
		757	SvREFCNT_dec (PL_defoutgv);
		758	SvREFCNT_dec (PL_rs);
		759	SvREFCNT_dec (GvSV (irsgv));
		760
		761	SvREFCNT_dec (PL_diehook);
		762	SvREFCNT_dec (PL_warnhook);
		763
		764	SvREFCNT_dec (coro->saved_deffh);
		765	SvREFCNT_dec (coro->throw);
		766
		767	coro_destroy_stacks (aTHX);
617	}	768	}
618		769
619	static void	770	static void
620	free_coro_mortal (pTHX)	771	free_coro_mortal (pTHX)
621	{	772	{
622	if (coro_mortal)	773	if (expect_true (coro_mortal))
623	{	774	{
624	SvREFCNT_dec (coro_mortal);	775	SvREFCNT_dec (coro_mortal);
625	coro_mortal = 0;	776	coro_mortal = 0;
626	}	777	}
		778	}
		779
		780	static int
		781	runops_trace (pTHX)
		782	{
		783	COP *oldcop = 0;
		784	int oldcxix = -2;
		785	struct coro *coro = SvSTATE (coro_current); /* trace cctx is tied to specific coro */
		786	coro_cctx *cctx = coro->cctx;
		787
		788	while ((PL_op = CALL_FPTR (PL_op->op_ppaddr) (aTHX)))
		789	{
		790	PERL_ASYNC_CHECK ();
		791
		792	if (cctx->flags & CC_TRACE_ALL)
		793	{
		794	if (PL_op->op_type == OP_LEAVESUB && cctx->flags & CC_TRACE_SUB)
		795	{
		796	PERL_CONTEXT *cx = &cxstack[cxstack_ix];
		797	SV **bot, **top;
		798	AV *av = newAV (); /* return values */
		799	SV **cb;
		800	dSP;
		801
		802	GV *gv = CvGV (cx->blk_sub.cv);
		803	SV *fullname = sv_2mortal (newSV (0));
		804	if (isGV (gv))
		805	gv_efullname3 (fullname, gv, 0);
		806
		807	bot = PL_stack_base + cx->blk_oldsp + 1;
		808	top = cx->blk_gimme == G_ARRAY ? SP + 1
		809	: cx->blk_gimme == G_SCALAR ? bot + 1
		810	: bot;
		811
		812	av_extend (av, top - bot);
		813	while (bot < top)
		814	av_push (av, SvREFCNT_inc (*bot++));
		815
		816	PL_runops = RUNOPS_DEFAULT;
		817	ENTER;
		818	SAVETMPS;
		819	EXTEND (SP, 3);
		820	PUSHMARK (SP);
		821	PUSHs (&PL_sv_no);
		822	PUSHs (fullname);
		823	PUSHs (sv_2mortal (newRV_noinc ((SV *)av)));
		824	PUTBACK;
		825	cb = hv_fetch ((HV *)SvRV (coro_current), strpair ("_trace_sub_cb"), 0);
		826	if (cb) call_sv (*cb, G_KEEPERR | G_EVAL | G_VOID | G_DISCARD);
		827	SPAGAIN;
		828	FREETMPS;
		829	LEAVE;
		830	PL_runops = runops_trace;
		831	}
		832
		833	if (oldcop != PL_curcop)
		834	{
		835	oldcop = PL_curcop;
		836
		837	if (PL_curcop != &PL_compiling)
		838	{
		839	SV **cb;
		840
		841	if (oldcxix != cxstack_ix && cctx->flags & CC_TRACE_SUB)
		842	{
		843	PERL_CONTEXT *cx = &cxstack[cxstack_ix];
		844
		845	if (CxTYPE (cx) == CXt_SUB && oldcxix < cxstack_ix)
		846	{
		847	runops_proc_t old_runops = PL_runops;
		848	dSP;
		849	GV *gv = CvGV (cx->blk_sub.cv);
		850	SV *fullname = sv_2mortal (newSV (0));
		851
		852	if (isGV (gv))
		853	gv_efullname3 (fullname, gv, 0);
		854
		855	PL_runops = RUNOPS_DEFAULT;
		856	ENTER;
		857	SAVETMPS;
		858	EXTEND (SP, 3);
		859	PUSHMARK (SP);
		860	PUSHs (&PL_sv_yes);
		861	PUSHs (fullname);
		862	PUSHs (cx->blk_sub.hasargs ? sv_2mortal (newRV_inc ((SV *)cx->blk_sub.argarray)) : &PL_sv_undef);
		863	PUTBACK;
		864	cb = hv_fetch ((HV *)SvRV (coro_current), strpair ("_trace_sub_cb"), 0);
		865	if (cb) call_sv (*cb, G_KEEPERR | G_EVAL | G_VOID | G_DISCARD);
		866	SPAGAIN;
		867	FREETMPS;
		868	LEAVE;
		869	PL_runops = runops_trace;
		870	}
		871
		872	oldcxix = cxstack_ix;
		873	}
		874
		875	if (cctx->flags & CC_TRACE_LINE)
		876	{
		877	dSP;
		878
		879	PL_runops = RUNOPS_DEFAULT;
		880	ENTER;
		881	SAVETMPS;
		882	EXTEND (SP, 3);
		883	PL_runops = RUNOPS_DEFAULT;
		884	PUSHMARK (SP);
		885	PUSHs (sv_2mortal (newSVpv (OutCopFILE (oldcop), 0)));
		886	PUSHs (sv_2mortal (newSViv (CopLINE (oldcop))));
		887	PUTBACK;
		888	cb = hv_fetch ((HV *)SvRV (coro_current), strpair ("_trace_line_cb"), 0);
		889	if (cb) call_sv (*cb, G_KEEPERR | G_EVAL | G_VOID | G_DISCARD);
		890	SPAGAIN;
		891	FREETMPS;
		892	LEAVE;
		893	PL_runops = runops_trace;
		894	}
		895	}
		896	}
		897	}
		898	}
		899
		900	TAINT_NOT;
		901	return 0;
627	}	902	}
628		903
629	/* inject a fake call to Coro::State::_cctx_init into the execution */	904	/* inject a fake call to Coro::State::_cctx_init into the execution */
630	/* _cctx_init should be careful, as it could be called at almost any time */	905	/* _cctx_init should be careful, as it could be called at almost any time */
631	/* during execution of a perl program */	906	/* during execution of a perl program */
632	static void NOINLINE	907	static void NOINLINE
633	prepare_cctx (pTHX_ coro_cctx *cctx)	908	cctx_prepare (pTHX_ coro_cctx *cctx)
634	{	909	{
635	dSP;	910	dSP;
636	LOGOP myop;	911	LOGOP myop;
		912
		913	PL_top_env = &PL_start_env;
		914
		915	if (cctx->flags & CC_TRACE)
		916	PL_runops = runops_trace;
637		917
638	Zero (&myop, 1, LOGOP);	918	Zero (&myop, 1, LOGOP);
639	myop.op_next = PL_op;	919	myop.op_next = PL_op;
640	myop.op_flags = OPf_WANT_VOID | OPf_STACKED;	920	myop.op_flags = OPf_WANT_VOID | OPf_STACKED;
641		921
…		…
651		931
652	/*	932	/*
653	* this is a _very_ stripped down perl interpreter ;)	933	* this is a _very_ stripped down perl interpreter ;)
654	*/	934	*/
655	static void	935	static void
656	coro_run (void *arg)	936	cctx_run (void *arg)
657	{	937	{
658	dTHX;	938	dTHX;
659		939
660	/* coro_run is the alternative tail of transfer(), so unlock here. */	940	/* cctx_run is the alternative tail of transfer(), so unlock here. */
661	UNLOCK;	941	UNLOCK;
662		942
663	PL_top_env = &PL_start_env;	943	/* we now skip the entersub that lead to transfer() */
		944	PL_op = PL_op->op_next;
664		945
665	/* inject a fake subroutine call to cctx_init */	946	/* inject a fake subroutine call to cctx_init */
666	prepare_cctx (aTHX_ (coro_cctx *)arg);	947	cctx_prepare (aTHX_ (coro_cctx *)arg);
667		948
668	/* somebody or something will hit me for both perl_run and PL_restartop */	949	/* somebody or something will hit me for both perl_run and PL_restartop */
669	PL_restartop = PL_op;	950	PL_restartop = PL_op;
670	perl_run (PL_curinterp);	951	perl_run (PL_curinterp);
671		952
…		…
690	++cctx_count;	971	++cctx_count;
691		972
692	Newz (0, cctx, 1, coro_cctx);	973	Newz (0, cctx, 1, coro_cctx);
693		974
694	#if HAVE_MMAP	975	#if HAVE_MMAP
695
696	cctx->ssize = ((coro_stacksize * sizeof (long) + PAGESIZE - 1) / PAGESIZE + CORO_STACKGUARD) * PAGESIZE;	976	cctx->ssize = ((coro_stacksize * sizeof (long) + PAGESIZE - 1) / PAGESIZE + CORO_STACKGUARD) * PAGESIZE;
697	/* mmap supposedly does allocate-on-write for us */	977	/* mmap supposedly does allocate-on-write for us */
698	cctx->sptr = mmap (0, cctx->ssize, PROT_EXEC|PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, 0, 0);	978	cctx->sptr = mmap (0, cctx->ssize, PROT_EXEC|PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, 0, 0);
699		979
700	if (cctx->sptr != (void *)-1)	980	if (cctx->sptr != (void *)-1)
…		…
702	# if CORO_STACKGUARD	982	# if CORO_STACKGUARD
703	mprotect (cctx->sptr, CORO_STACKGUARD * PAGESIZE, PROT_NONE);	983	mprotect (cctx->sptr, CORO_STACKGUARD * PAGESIZE, PROT_NONE);
704	# endif	984	# endif
705	stack_start = CORO_STACKGUARD * PAGESIZE + (char *)cctx->sptr;	985	stack_start = CORO_STACKGUARD * PAGESIZE + (char *)cctx->sptr;
706	stack_size = cctx->ssize - CORO_STACKGUARD * PAGESIZE;	986	stack_size = cctx->ssize - CORO_STACKGUARD * PAGESIZE;
707	cctx->mapped = 1;	987	cctx->flags |= CC_MAPPED;
708	}	988	}
709	else	989	else
710	#endif	990	#endif
711	{	991	{
712	cctx->ssize = coro_stacksize * (long)sizeof (long);	992	cctx->ssize = coro_stacksize * (long)sizeof (long);
…		…
721	stack_start = cctx->sptr;	1001	stack_start = cctx->sptr;
722	stack_size = cctx->ssize;	1002	stack_size = cctx->ssize;
723	}	1003	}
724		1004
725	REGISTER_STACK (cctx, (char *)stack_start, (char *)stack_start + stack_size);	1005	REGISTER_STACK (cctx, (char *)stack_start, (char *)stack_start + stack_size);
726	coro_create (&cctx->cctx, coro_run, (void *)cctx, stack_start, stack_size);	1006	coro_create (&cctx->cctx, cctx_run, (void *)cctx, stack_start, stack_size);
727		1007
728	return cctx;	1008	return cctx;
729	}	1009	}
730		1010
731	static void	1011	static void
…		…
739	#if CORO_USE_VALGRIND	1019	#if CORO_USE_VALGRIND
740	VALGRIND_STACK_DEREGISTER (cctx->valgrind_id);	1020	VALGRIND_STACK_DEREGISTER (cctx->valgrind_id);
741	#endif	1021	#endif
742		1022
743	#if HAVE_MMAP	1023	#if HAVE_MMAP
744	if (cctx->mapped)	1024	if (cctx->flags & CC_MAPPED)
745	munmap (cctx->sptr, cctx->ssize);	1025	munmap (cctx->sptr, cctx->ssize);
746	else	1026	else
747	#endif	1027	#endif
748	Safefree (cctx->sptr);	1028	Safefree (cctx->sptr);
749		1029
750	Safefree (cctx);	1030	Safefree (cctx);
751	}	1031	}
752		1032
		1033	/* wether this cctx should be destructed */
		1034	#define CCTX_EXPIRED(cctx) ((cctx)->ssize < coro_stacksize || ((cctx)->flags & CC_NOREUSE))
		1035
753	static coro_cctx *	1036	static coro_cctx *
754	cctx_get (pTHX)	1037	cctx_get (pTHX_ int gimme)
755	{	1038	{
756	while (cctx_first)	1039	while (expect_true (cctx_first[gimme]))
757	{	1040	{
758	coro_cctx *cctx = cctx_first;	1041	coro_cctx *cctx = cctx_first[gimme];
759	cctx_first = cctx->next;	1042	cctx_first[gimme] = cctx->next;
760	--cctx_idle;	1043	--cctx_idle[gimme];
761		1044
762	if (cctx->ssize >= coro_stacksize)	1045	if (expect_true (!CCTX_EXPIRED (cctx)))
763	return cctx;	1046	return cctx;
764		1047
765	cctx_destroy (cctx);	1048	cctx_destroy (cctx);
766	}	1049	}
767		1050
768	PL_op = PL_op->op_next;	1051	assert (!gimme);
769	return cctx_new ();	1052	return cctx_new ();
770	}	1053	}
771		1054
772	static void	1055	static void
773	cctx_put (coro_cctx *cctx)	1056	cctx_put (coro_cctx *cctx, int gimme)
774	{	1057	{
775	/* free another cctx if overlimit */	1058	/* free another cctx if overlimit */
776	if (cctx_idle >= MAX_IDLE_CCTX)	1059	if (expect_false (cctx_idle[gimme] >= MAX_IDLE_CCTX))
777	{	1060	{
778	coro_cctx *first = cctx_first;	1061	coro_cctx *first = cctx_first[gimme];
779	cctx_first = first->next;	1062	cctx_first[gimme] = first->next;
780	--cctx_idle;	1063	--cctx_idle[gimme];
781		1064
782	assert (!first->inuse);
783	cctx_destroy (first);	1065	cctx_destroy (first);
784	}	1066	}
785		1067
786	++cctx_idle;	1068	++cctx_idle[gimme];
787	cctx->next = cctx_first;	1069	cctx->next = cctx_first[gimme];
788	cctx_first = cctx;	1070	cctx_first[gimme] = cctx;
789	}	1071	}
790		1072
791	/** coroutine switching *****************************************************/	1073	/** coroutine switching *****************************************************/
792		1074
793	/* never call directly, always through the coro_state_transfer global variable */	1075	static void
		1076	transfer_check (pTHX_ struct coro *prev, struct coro *next)
		1077	{
		1078	if (expect_true (prev != next))
		1079	{
		1080	if (expect_false (!(prev->flags & (CF_RUNNING | CF_NEW))))
		1081	croak ("Coro::State::transfer called with non-running/new prev Coro::State, but can only transfer from running or new states");
		1082
		1083	if (expect_false (next->flags & CF_RUNNING))
		1084	croak ("Coro::State::transfer called with running next Coro::State, but can only transfer to inactive states");
		1085
		1086	if (expect_false (next->flags & CF_DESTROYED))
		1087	croak ("Coro::State::transfer called with destroyed next Coro::State, but can only transfer to inactive states");
		1088
		1089	if (
		1090	#if PERL_VERSION_ATLEAST (5,9,0)
		1091	expect_false (PL_parser)
		1092	#else
		1093	expect_false (PL_lex_state != LEX_NOTPARSING)
		1094	#endif
		1095	)
		1096	croak ("Coro::State::transfer called while parsing, but this is not supported");
		1097	}
		1098	}
		1099
		1100	/* always use the TRANSFER macro */
794	static void NOINLINE	1101	static void NOINLINE
795	transfer (pTHX_ struct coro *prev, struct coro *next)	1102	transfer (pTHX_ struct coro *prev, struct coro *next)
796	{	1103	{
797	dSTACKLEVEL;	1104	dSTACKLEVEL;
798		1105
799	/* sometimes transfer is only called to set idle_sp */	1106	/* sometimes transfer is only called to set idle_sp */
800	if (!next)	1107	if (expect_false (!next))
801	{	1108	{
802	((coro_cctx *)prev)->idle_sp = STACKLEVEL;	1109	((coro_cctx *)prev)->idle_sp = STACKLEVEL;
803	assert (((coro_cctx *)prev)->idle_te = PL_top_env); /* just for the side-effect when asserts are enabled */	1110	assert (((coro_cctx *)prev)->idle_te = PL_top_env); /* just for the side-effect when asserts are enabled */
804	}	1111	}
805	else if (prev != next)	1112	else if (expect_true (prev != next))
806	{	1113	{
807	coro_cctx *prev__cctx;	1114	coro_cctx *prev__cctx;
808		1115
809	if (prev->flags & CF_NEW)	1116	if (expect_false (prev->flags & CF_NEW))
810	{	1117	{
811	/* create a new empty context */	1118	/* create a new empty context */
812	Newz (0, prev->cctx, 1, coro_cctx);	1119	Newz (0, prev->cctx, 1, coro_cctx);
813	prev->cctx->inuse = 1;
814	prev->flags &= ~CF_NEW;	1120	prev->flags &= ~CF_NEW;
815	prev->flags |= CF_RUNNING;	1121	prev->flags |= CF_RUNNING;
816	}	1122	}
817		1123
818	/*TODO: must not croak here */
819	if (!prev->flags & CF_RUNNING)
820	croak ("Coro::State::transfer called with non-running prev Coro::State, but can only transfer from running states");
821
822	if (next->flags & CF_RUNNING)
823	croak ("Coro::State::transfer called with running next Coro::State, but can only transfer to inactive states");
824
825	if (next->flags & CF_DESTROYED)
826	croak ("Coro::State::transfer called with destroyed next Coro::State, but can only transfer to inactive states");
827
828	prev->flags &= ~CF_RUNNING;	1124	prev->flags &= ~CF_RUNNING;
829	next->flags |= CF_RUNNING;	1125	next->flags |= CF_RUNNING;
830		1126
831	LOCK;	1127	LOCK;
832		1128
833	if (next->flags & CF_NEW)	1129	if (expect_false (next->flags & CF_NEW))
834	{	1130	{
835	/* need to start coroutine */	1131	/* need to start coroutine */
836	next->flags &= ~CF_NEW;	1132	next->flags &= ~CF_NEW;
837	/* first get rid of the old state */	1133	/* first get rid of the old state */
838	save_perl (aTHX_ prev);	1134	save_perl (aTHX_ prev);
839	/* setup coroutine call */	1135	/* setup coroutine call */
840	setup_coro (aTHX_ next);	1136	coro_setup (aTHX_ next);
841	/* need a new stack */
842	assert (!next->cctx);
843	}	1137	}
844	else	1138	else
845	{	1139	{
846	/* coroutine already started */	1140	/* coroutine already started */
847	save_perl (aTHX_ prev);	1141	save_perl (aTHX_ prev);
…		…
849	}	1143	}
850		1144
851	prev__cctx = prev->cctx;	1145	prev__cctx = prev->cctx;
852		1146
853	/* possibly "free" the cctx */	1147	/* possibly "free" the cctx */
854	if (prev__cctx->idle_sp == STACKLEVEL)	1148	if (expect_true (prev__cctx->idle_sp == STACKLEVEL && !(prev__cctx->flags & CC_TRACE)))
855	{	1149	{
856	/* I assume that STACKLEVEL is a stronger indicator than PL_top_env changes */	1150	/* I assume that STACKLEVEL is a stronger indicator than PL_top_env changes */
857	assert (("ERROR: current top_env must equal previous top_env", PL_top_env == prev__cctx->idle_te));	1151	assert (("ERROR: current top_env must equal previous top_env", PL_top_env == prev__cctx->idle_te));
858		1152
859	prev->cctx = 0;	1153	prev->cctx = 0;
860		1154
		1155	/* if the cctx is about to be destroyed we need to make sure we won't see it in cctx_get */
		1156	/* without this the next cctx_get might destroy the prev__cctx while still in use */
		1157	if (expect_false (CCTX_EXPIRED (prev__cctx)))
		1158	if (!next->cctx)
		1159	next->cctx = cctx_get (aTHX_ next->gimme);
		1160
861	cctx_put (prev__cctx);	1161	cctx_put (prev__cctx, prev->gimme);
862	prev__cctx->inuse = 0;
863	}	1162	}
864		1163
		1164	++next->usecount;
		1165
865	if (!next->cctx)	1166	if (expect_true (!next->cctx))
866	{
867	next->cctx = cctx_get (aTHX);	1167	next->cctx = cctx_get (aTHX_ next->gimme);
868	assert (!next->cctx->inuse);
869	next->cctx->inuse = 1;
870	}
871		1168
872	if (prev__cctx != next->cctx)	1169	if (expect_false (prev__cctx != next->cctx))
873	{	1170	{
874	prev__cctx->top_env = PL_top_env;	1171	prev__cctx->top_env = PL_top_env;
875	PL_top_env = next->cctx->top_env;	1172	PL_top_env = next->cctx->top_env;
876	coro_transfer (&prev__cctx->cctx, &next->cctx->cctx);	1173	coro_transfer (&prev__cctx->cctx, &next->cctx->cctx);
877	}	1174	}
878		1175
879	free_coro_mortal (aTHX);	1176	free_coro_mortal (aTHX);
880	UNLOCK;	1177	UNLOCK;
		1178
		1179	if (expect_false (prev->throw || next->throw))
		1180	{
		1181	struct coro *coro = SvSTATE (coro_current);
		1182
		1183	if (coro->throw)
		1184	{
		1185	SV *exception = coro->throw;
		1186	coro->throw = 0;
		1187	sv_setsv (ERRSV, exception);
		1188	croak (0);
		1189	}
		1190	}
881	}	1191	}
882	}	1192	}
883		1193
884	struct transfer_args	1194	struct transfer_args
885	{	1195	{
886	struct coro *prev, *next;	1196	struct coro *prev, *next;
887	};	1197	};
888		1198
889	#define TRANSFER(ta) transfer (aTHX_ (ta).prev, (ta).next)	1199	#define TRANSFER(ta) transfer (aTHX_ (ta).prev, (ta).next)
		1200	#define TRANSFER_CHECK(ta) transfer_check (aTHX_ (ta).prev, (ta).next)
890		1201
891	/** high level stuff ********************************************************/	1202	/** high level stuff ********************************************************/
892		1203
893	static int	1204	static int
894	coro_state_destroy (pTHX_ struct coro *coro)	1205	coro_state_destroy (pTHX_ struct coro *coro)
…		…
911		1222
912	if (coro->mainstack && coro->mainstack != main_mainstack)	1223	if (coro->mainstack && coro->mainstack != main_mainstack)
913	{	1224	{
914	struct coro temp;	1225	struct coro temp;
915		1226
916	assert (!(coro->flags & CF_RUNNING));
917
918	Zero (&temp, 1, struct coro);
919	temp.save = CORO_SAVE_ALL;
920
921	if (coro->flags & CF_RUNNING)	1227	if (coro->flags & CF_RUNNING)
922	croak ("FATAL: tried to destroy currently running coroutine");	1228	croak ("FATAL: tried to destroy currently running coroutine");
923		1229
924	save_perl (aTHX_ &temp);	1230	save_perl (aTHX_ &temp);
925	load_perl (aTHX_ coro);	1231	load_perl (aTHX_ coro);
926		1232
927	coro_destroy_stacks (aTHX);	1233	coro_destroy (aTHX_ coro);
928		1234
929	load_perl (aTHX_ &temp); /* this will get rid of defsv etc.. */	1235	load_perl (aTHX_ &temp);
930		1236
931	coro->mainstack = 0;	1237	coro->slot = 0;
932	}	1238	}
933		1239
934	cctx_destroy (coro->cctx);	1240	cctx_destroy (coro->cctx);
935	SvREFCNT_dec (coro->args);	1241	SvREFCNT_dec (coro->args);
936		1242
…		…
977	#else	1283	#else
978	# define MGf_DUP 0	1284	# define MGf_DUP 0
979	#endif	1285	#endif
980	};	1286	};
981		1287
982	static struct coro *
983	SvSTATE_ (pTHX_ SV *coro)
984	{
985	HV *stash;
986	MAGIC *mg;
987
988	if (SvROK (coro))
989	coro = SvRV (coro);
990
991	stash = SvSTASH (coro);
992	if (stash != coro_stash && stash != coro_state_stash)
993	{
994	/* very slow, but rare, check */
995	if (!sv_derived_from (sv_2mortal (newRV_inc (coro)), "Coro::State"))
996	croak ("Coro::State object required");
997	}
998
999	mg = CORO_MAGIC (coro);
1000	return (struct coro *)mg->mg_ptr;
1001	}
1002
1003	#define SvSTATE(sv) SvSTATE_ (aTHX_ (sv))
1004
1005	static void	1288	static void
1006	prepare_transfer (pTHX_ struct transfer_args *ta, SV *prev_sv, SV *next_sv)	1289	prepare_transfer (pTHX_ struct transfer_args *ta, SV *prev_sv, SV *next_sv)
1007	{	1290	{
1008	ta->prev = SvSTATE (prev_sv);	1291	ta->prev = SvSTATE (prev_sv);
1009	ta->next = SvSTATE (next_sv);	1292	ta->next = SvSTATE (next_sv);
		1293	TRANSFER_CHECK (*ta);
1010	}	1294	}
1011		1295
1012	static void	1296	static void
1013	api_transfer (SV *prev_sv, SV *next_sv)	1297	api_transfer (SV *prev_sv, SV *next_sv)
1014	{	1298	{
1015	dTHX;	1299	dTHX;
1016	struct transfer_args ta;	1300	struct transfer_args ta;
1017		1301
1018	prepare_transfer (aTHX_ &ta, prev_sv, next_sv);	1302	prepare_transfer (aTHX_ &ta, prev_sv, next_sv);
1019	TRANSFER (ta);	1303	TRANSFER (ta);
1020	}
1021
1022	static int
1023	api_save (SV *coro_sv, int new_save)
1024	{
1025	dTHX;
1026	struct coro *coro = SvSTATE (coro_sv);
1027	int old_save = coro->save;
1028
1029	if (new_save >= 0)
1030	coro->save = new_save;
1031
1032	return old_save;
1033	}	1304	}
1034		1305
1035	/** Coro ********************************************************************/	1306	/** Coro ********************************************************************/
1036		1307
1037	static void	1308	static void
…		…
1096	{	1367	{
1097	LOCK;	1368	LOCK;
1098	next_sv = coro_deq (aTHX_ PRIO_MIN);	1369	next_sv = coro_deq (aTHX_ PRIO_MIN);
1099		1370
1100	/* nothing to schedule: call the idle handler */	1371	/* nothing to schedule: call the idle handler */
1101	if (!next_sv)	1372	if (expect_false (!next_sv))
1102	{	1373	{
1103	dSP;	1374	dSP;
1104	UNLOCK;	1375	UNLOCK;
1105		1376
1106	ENTER;	1377	ENTER;
…		…
1116	}	1387	}
1117		1388
1118	ta->next = SvSTATE (next_sv);	1389	ta->next = SvSTATE (next_sv);
1119		1390
1120	/* cannot transfer to destroyed coros, skip and look for next */	1391	/* cannot transfer to destroyed coros, skip and look for next */
1121	if (ta->next->flags & CF_DESTROYED)	1392	if (expect_false (ta->next->flags & CF_DESTROYED))
1122	{	1393	{
1123	UNLOCK;	1394	UNLOCK;
1124	SvREFCNT_dec (next_sv);	1395	SvREFCNT_dec (next_sv);
1125	/* coro_nready is already taken care of by destroy */	1396	/* coro_nready is already taken care of by destroy */
1126	continue;	1397	continue;
…		…
1131	break;	1402	break;
1132	}	1403	}
1133		1404
1134	/* free this only after the transfer */	1405	/* free this only after the transfer */
1135	prev_sv = SvRV (coro_current);	1406	prev_sv = SvRV (coro_current);
1136	SvRV_set (coro_current, next_sv);
1137	ta->prev = SvSTATE (prev_sv);	1407	ta->prev = SvSTATE (prev_sv);
1138		1408	TRANSFER_CHECK (*ta);
1139	assert (ta->next->flags & CF_READY);	1409	assert (ta->next->flags & CF_READY);
1140	ta->next->flags &= ~CF_READY;	1410	ta->next->flags &= ~CF_READY;
		1411	SvRV_set (coro_current, next_sv);
1141		1412
1142	LOCK;	1413	LOCK;
1143	free_coro_mortal (aTHX);	1414	free_coro_mortal (aTHX);
1144	coro_mortal = prev_sv;	1415	coro_mortal = prev_sv;
1145	UNLOCK;	1416	UNLOCK;
…		…
1182	dTHX;	1453	dTHX;
1183	struct transfer_args ta;	1454	struct transfer_args ta;
1184		1455
1185	prepare_cede (aTHX_ &ta);	1456	prepare_cede (aTHX_ &ta);
1186		1457
1187	if (ta.prev != ta.next)	1458	if (expect_true (ta.prev != ta.next))
1188	{	1459	{
1189	TRANSFER (ta);	1460	TRANSFER (ta);
1190	return 1;	1461	return 1;
1191	}	1462	}
1192	else	1463	else
…		…
1206	}	1477	}
1207	else	1478	else
1208	return 0;	1479	return 0;
1209	}	1480	}
1210		1481
		1482	static void
		1483	api_trace (SV *coro_sv, int flags)
		1484	{
		1485	dTHX;
		1486	struct coro *coro = SvSTATE (coro_sv);
		1487
		1488	if (flags & CC_TRACE)
		1489	{
		1490	if (!coro->cctx)
		1491	coro->cctx = cctx_new ();
		1492	else if (!(coro->cctx->flags & CC_TRACE))
		1493	croak ("cannot enable tracing on coroutine with custom stack");
		1494
		1495	coro->cctx->flags |= CC_NOREUSE | (flags & (CC_TRACE | CC_TRACE_ALL));
		1496	}
		1497	else if (coro->cctx && coro->cctx->flags & CC_TRACE)
		1498	{
		1499	coro->cctx->flags &= ~(CC_TRACE | CC_TRACE_ALL);
		1500
		1501	if (coro->flags & CF_RUNNING)
		1502	PL_runops = RUNOPS_DEFAULT;
		1503	else
		1504	coro->slot->runops = RUNOPS_DEFAULT;
		1505	}
		1506	}
		1507
1211	MODULE = Coro::State PACKAGE = Coro::State	1508	MODULE = Coro::State PACKAGE = Coro::State PREFIX = api_
1212		1509
1213	PROTOTYPES: DISABLE	1510	PROTOTYPES: DISABLE
1214		1511
1215	BOOT:	1512	BOOT:
1216	{	1513	{
1217	#ifdef USE_ITHREADS	1514	#ifdef USE_ITHREADS
1218	MUTEX_INIT (&coro_mutex);	1515	MUTEX_INIT (&coro_mutex);
1219	#endif	1516	#endif
1220	BOOT_PAGESIZE;	1517	BOOT_PAGESIZE;
1221		1518
		1519	irsgv = gv_fetchpv ("/" , GV_ADD|GV_NOTQUAL, SVt_PV);
		1520	stdoutgv = gv_fetchpv ("STDOUT", GV_ADD|GV_NOTQUAL, SVt_PVIO);
		1521
		1522	hv_sig = coro_get_hv ("SIG", TRUE);
		1523	sv_diehook = coro_get_sv ("Coro::State::DIEHOOK" , TRUE);
		1524	sv_warnhook = coro_get_sv ("Coro::State::WARNHOOK", TRUE);
		1525
		1526	if (!PL_diehook ) hv_store (hv_sig, strpair ("__DIE__" ), SvREFCNT_inc (sv_diehook ), 0);
		1527	if (!PL_warnhook) hv_store (hv_sig, strpair ("__WARN__"), SvREFCNT_inc (sv_warnhook), 0);
		1528
1222	coro_state_stash = gv_stashpv ("Coro::State", TRUE);	1529	coro_state_stash = gv_stashpv ("Coro::State", TRUE);
1223		1530
1224	newCONSTSUB (coro_state_stash, "SAVE_DEFAV", newSViv (CORO_SAVE_DEFAV));	1531	newCONSTSUB (coro_state_stash, "CC_TRACE" , newSViv (CC_TRACE));
1225	newCONSTSUB (coro_state_stash, "SAVE_DEFSV", newSViv (CORO_SAVE_DEFSV));	1532	newCONSTSUB (coro_state_stash, "CC_TRACE_SUB" , newSViv (CC_TRACE_SUB));
1226	newCONSTSUB (coro_state_stash, "SAVE_ERRSV", newSViv (CORO_SAVE_ERRSV));
1227	newCONSTSUB (coro_state_stash, "SAVE_IRSSV", newSViv (CORO_SAVE_IRSSV));
1228	newCONSTSUB (coro_state_stash, "SAVE_DEFFH", newSViv (CORO_SAVE_DEFFH));
1229	newCONSTSUB (coro_state_stash, "SAVE_DEF", newSViv (CORO_SAVE_DEF));	1533	newCONSTSUB (coro_state_stash, "CC_TRACE_LINE", newSViv (CC_TRACE_LINE));
1230	newCONSTSUB (coro_state_stash, "SAVE_ALL", newSViv (CORO_SAVE_ALL));	1534	newCONSTSUB (coro_state_stash, "CC_TRACE_ALL" , newSViv (CC_TRACE_ALL));
1231		1535
1232	main_mainstack = PL_mainstack;	1536	main_mainstack = PL_mainstack;
1233	main_top_env = PL_top_env;	1537	main_top_env = PL_top_env;
1234		1538
1235	while (main_top_env->je_prev)	1539	while (main_top_env->je_prev)
…		…
1248	struct coro *coro;	1552	struct coro *coro;
1249	HV *hv;	1553	HV *hv;
1250	int i;	1554	int i;
1251		1555
1252	Newz (0, coro, 1, struct coro);	1556	Newz (0, coro, 1, struct coro);
1253	coro->args = newAV ();	1557	coro->args = newAV ();
1254	coro->save = CORO_SAVE_DEF;
1255	coro->flags = CF_NEW;	1558	coro->flags = CF_NEW;
1256		1559
1257	if (coro_first) coro_first->prev = coro;	1560	if (coro_first) coro_first->prev = coro;
1258	coro->next = coro_first;	1561	coro->next = coro_first;
1259	coro_first = coro;	1562	coro_first = coro;
1260		1563
1261	coro->hv = hv = newHV ();	1564	coro->hv = hv = newHV ();
1262	sv_magicext ((SV *)hv, 0, PERL_MAGIC_ext, &coro_state_vtbl, (char *)coro, 0)->mg_flags |= MGf_DUP;	1565	sv_magicext ((SV *)hv, 0, PERL_MAGIC_ext, &coro_state_vtbl, (char *)coro, 0)->mg_flags |= MGf_DUP;
1263	RETVAL = sv_bless (newRV_noinc ((SV *)hv), gv_stashpv (klass, 1));	1566	RETVAL = sv_bless (newRV_noinc ((SV *)hv), gv_stashpv (klass, 1));
1264		1567
		1568	av_extend (coro->args, items - 1);
1265	for (i = 1; i < items; i++)	1569	for (i = 1; i < items; i++)
1266	av_push (coro->args, newSVsv (ST (i)));	1570	av_push (coro->args, newSVsv (ST (i)));
1267	}	1571	}
1268	OUTPUT:	1572	OUTPUT:
1269	RETVAL	1573	RETVAL
1270		1574
1271	int	1575	# these not obviously related functions are all rolled into the same xs
1272	save (SV *coro, int new_save = -1)	1576	# function to increase chances that they all will call transfer with the same
1273	CODE:	1577	# stack offset
1274	RETVAL = api_save (coro, new_save);
1275	OUTPUT:
1276	RETVAL
1277
1278	int
1279	save_also (SV *coro_sv, int save_also)
1280	CODE:
1281	{
1282	struct coro *coro = SvSTATE (coro_sv);
1283	RETVAL = coro->save;
1284	coro->save |= save_also;
1285	}
1286	OUTPUT:
1287	RETVAL
1288
1289	void	1578	void
1290	_set_stacklevel (...)	1579	_set_stacklevel (...)
1291	ALIAS:	1580	ALIAS:
1292	Coro::State::transfer = 1	1581	Coro::State::transfer = 1
1293	Coro::schedule = 2	1582	Coro::schedule = 2
1294	Coro::cede = 3	1583	Coro::cede = 3
1295	Coro::cede_notself = 4	1584	Coro::cede_notself = 4
		1585	Coro::Event::next = 5
		1586	Coro::Event::next_cancel = 6
1296	CODE:	1587	PPCODE:
1297	{	1588	{
1298	struct transfer_args ta;	1589	struct transfer_args ta;
		1590	int again = 0;
1299		1591
1300	switch (ix)	1592	do
1301	{	1593	{
		1594	switch (ix)
		1595	{
1302	case 0:	1596	case 0:
1303	ta.prev = (struct coro *)INT2PTR (coro_cctx *, SvIV (ST (0)));	1597	ta.prev = (struct coro *)INT2PTR (coro_cctx *, SvIV (ST (0)));
1304	ta.next = 0;	1598	ta.next = 0;
1305	break;	1599	break;
1306		1600
1307	case 1:	1601	case 1:
1308	if (items != 2)	1602	if (items != 2)
1309	croak ("Coro::State::transfer (prev,next) expects two arguments, not %d", items);	1603	croak ("Coro::State::transfer (prev,next) expects two arguments, not %d", items);
1310		1604
1311	prepare_transfer (aTHX_ &ta, ST (0), ST (1));	1605	prepare_transfer (aTHX_ &ta, ST(0), ST(1));
1312	break;	1606	break;
1313		1607
1314	case 2:	1608	case 2:
1315	prepare_schedule (aTHX_ &ta);	1609	prepare_schedule (aTHX_ &ta);
1316	break;	1610	break;
1317		1611
1318	case 3:	1612	case 3:
1319	prepare_cede (aTHX_ &ta);	1613	prepare_cede (aTHX_ &ta);
1320	break;	1614	break;
1321		1615
1322	case 4:	1616	case 4:
1323	if (!prepare_cede_notself (aTHX_ &ta))	1617	if (!prepare_cede_notself (aTHX_ &ta))
1324	XSRETURN_EMPTY;	1618	XSRETURN_EMPTY;
1325		1619
1326	break;	1620	break;
		1621
		1622	case 5:
		1623	case 6:
		1624	if (items != 1)
		1625	croak ("Coro::Event::next (watcher) expects one argument, not %d", items);
		1626
		1627	{
		1628	SV *ev = coroapi.coro_event_next (ST (0), ix == 6, GIMME_V != G_VOID);
		1629
		1630	if (ev)
		1631	{
		1632	if (GIMME_V != G_VOID)
		1633	{
		1634	XPUSHs (ev);
		1635	XSRETURN (1);
		1636	}
		1637	else
		1638	XSRETURN_EMPTY;
		1639	}
		1640	}
		1641
		1642	prepare_schedule (aTHX_ &ta);
		1643	again = 1;
		1644	break;
		1645	}
		1646
		1647	/* our caller, entersub, caches *only* this value */
		1648	ta.prev->gimme = GIMME_V == G_VOID ? 0
		1649	: GIMME_V == G_SCALAR ? 1
		1650	: 2;
		1651
		1652	/* we need to save all local variables, as we might execute a different coroutine when transfer returns */
		1653	sp += 2; /* save args */
		1654	EXTEND (SP, 4);
		1655	PUSHs ((SV *)(intptr_t)items);
		1656	PUSHs ((SV *)(intptr_t)ix);
		1657	PUSHs ((SV *)(intptr_t)ax);
		1658	PUSHs ((SV *)(intptr_t)again);
		1659	PUTBACK;
		1660	BARRIER;
		1661	TRANSFER (ta);
		1662	BARRIER;
		1663	SPAGAIN;
		1664	again = (intptr_t)POPs;
		1665	ax = (intptr_t)POPs;
		1666	ix = (intptr_t)POPs;
		1667	items = (intptr_t)POPs;
		1668	sp -= 2; /* restore args */
1327	}	1669	}
		1670	while (again);
1328		1671
1329	BARRIER;
1330	TRANSFER (ta);
1331
1332	if (GIMME_V != G_VOID && ta.next != ta.prev)	1672	if (expect_false (GIMME_V != G_VOID && ta.next != ta.prev))
1333	XSRETURN_YES;	1673	XSRETURN_YES;
		1674
		1675	XSRETURN_EMPTY; /* not understood why this is necessary, likely some stack handling bug */
1334	}	1676	}
1335		1677
1336	bool	1678	bool
1337	_destroy (SV *coro_sv)	1679	_destroy (SV *coro_sv)
1338	CODE:	1680	CODE:
…		…
1364	RETVAL	1706	RETVAL
1365		1707
1366	int	1708	int
1367	cctx_idle ()	1709	cctx_idle ()
1368	CODE:	1710	CODE:
1369	RETVAL = cctx_idle;	1711	RETVAL = cctx_idle[0] + cctx_idle[1] + cctx_idle[2];
1370	OUTPUT:	1712	OUTPUT:
1371	RETVAL	1713	RETVAL
1372		1714
1373	void	1715	void
1374	list ()	1716	list ()
…		…
1379	if (coro->hv)	1721	if (coro->hv)
1380	XPUSHs (sv_2mortal (newRV_inc ((SV *)coro->hv)));	1722	XPUSHs (sv_2mortal (newRV_inc ((SV *)coro->hv)));
1381	}	1723	}
1382		1724
1383	void	1725	void
1384	_eval (Coro::State coro, SV *coderef)	1726	call (Coro::State coro, SV *coderef)
		1727	ALIAS:
		1728	eval = 1
1385	CODE:	1729	CODE:
1386	{	1730	{
1387	if (coro->mainstack)	1731	if (coro->mainstack)
1388	{	1732	{
1389	struct coro temp;	1733	struct coro temp;
1390	Zero (&temp, 1, struct coro);
1391	temp.save = CORO_SAVE_ALL;
1392		1734
1393	if (!(coro->flags & CF_RUNNING))	1735	if (!(coro->flags & CF_RUNNING))
1394	{	1736	{
1395	save_perl (aTHX_ &temp);	1737	save_perl (aTHX_ &temp);
1396	load_perl (aTHX_ coro);	1738	load_perl (aTHX_ coro);
…		…
1398		1740
1399	{	1741	{
1400	dSP;	1742	dSP;
1401	ENTER;	1743	ENTER;
1402	SAVETMPS;	1744	SAVETMPS;
		1745	PUTBACK;
		1746	PUSHSTACK;
1403	PUSHMARK (SP);	1747	PUSHMARK (SP);
1404	PUTBACK;	1748
		1749	if (ix)
		1750	eval_sv (coderef, 0);
		1751	else
1405	call_sv (coderef, G_KEEPERR | G_EVAL | G_VOID | G_DISCARD);	1752	call_sv (coderef, G_KEEPERR | G_EVAL | G_VOID | G_DISCARD);
		1753
1406	SPAGAIN;	1754	POPSTACK;
1407	FREETMPS;	1755	FREETMPS;
1408	LEAVE;	1756	LEAVE;
1409	PUTBACK;
1410	}	1757	}
1411		1758
1412	if (!(coro->flags & CF_RUNNING))	1759	if (!(coro->flags & CF_RUNNING))
1413	{	1760	{
1414	save_perl (aTHX_ coro);	1761	save_perl (aTHX_ coro);
1415	load_perl (aTHX_ &temp);	1762	load_perl (aTHX_ &temp);
1416	}	1763	}
1417	}	1764	}
1418	}	1765	}
1419		1766
1420	SV *	1767	SV *
1421	is_ready (Coro::State coro)	1768	is_ready (Coro::State coro)
1422	PROTOTYPE: $	1769	PROTOTYPE: $
1423	ALIAS:	1770	ALIAS:
1424	is_ready = CF_READY	1771	is_ready = CF_READY
…		…
1428	CODE:	1775	CODE:
1429	RETVAL = boolSV (coro->flags & ix);	1776	RETVAL = boolSV (coro->flags & ix);
1430	OUTPUT:	1777	OUTPUT:
1431	RETVAL	1778	RETVAL
1432		1779
		1780	void
		1781	api_trace (SV *coro, int flags = CC_TRACE | CC_TRACE_SUB)
		1782
1433	SV *	1783	SV *
1434	has_stack (Coro::State coro)	1784	has_stack (Coro::State coro)
1435	PROTOTYPE: $	1785	PROTOTYPE: $
1436	CODE:	1786	CODE:
1437	RETVAL = boolSV (!!coro->cctx);	1787	RETVAL = boolSV (!!coro->cctx);
1438	OUTPUT:	1788	OUTPUT:
1439	RETVAL	1789	RETVAL
1440		1790
		1791	int
		1792	is_traced (Coro::State coro)
		1793	PROTOTYPE: $
		1794	CODE:
		1795	RETVAL = (coro->cctx ? coro->cctx->flags : 0) & CC_TRACE_ALL;
		1796	OUTPUT:
		1797	RETVAL
		1798
1441	IV	1799	IV
1442	rss (Coro::State coro)	1800	rss (Coro::State coro)
1443	PROTOTYPE: $	1801	PROTOTYPE: $
		1802	ALIAS:
		1803	usecount = 1
1444	CODE:	1804	CODE:
1445	RETVAL = coro_rss (coro);	1805	switch (ix)
		1806	{
		1807	case 0: RETVAL = coro_rss (aTHX_ coro); break;
		1808	case 1: RETVAL = coro->usecount; break;
		1809	}
1446	OUTPUT:	1810	OUTPUT:
1447	RETVAL	1811	RETVAL
1448		1812
1449		1813
1450	MODULE = Coro::State PACKAGE = Coro	1814	MODULE = Coro::State PACKAGE = Coro
1451		1815
1452	BOOT:	1816	BOOT:
1453	{	1817	{
1454	int i;	1818	int i;
1455		1819
1456	sv_pool_rss = get_sv ("Coro::POOL_RSS" , TRUE);	1820	sv_pool_rss = coro_get_sv ("Coro::POOL_RSS" , TRUE);
1457	sv_pool_size = get_sv ("Coro::POOL_SIZE" , TRUE);	1821	sv_pool_size = coro_get_sv ("Coro::POOL_SIZE" , TRUE);
1458	av_async_pool = get_av ("Coro::async_pool", TRUE);	1822	av_async_pool = coro_get_av ("Coro::async_pool", TRUE);
1459		1823
1460	coro_current = get_sv ("Coro::current", FALSE);	1824	coro_current = coro_get_sv ("Coro::current", FALSE);
1461	SvREADONLY_on (coro_current);	1825	SvREADONLY_on (coro_current);
1462		1826
1463	coro_stash = gv_stashpv ("Coro", TRUE);	1827	coro_stash = gv_stashpv ("Coro", TRUE);
1464		1828
1465	newCONSTSUB (coro_stash, "PRIO_MAX", newSViv (PRIO_MAX));	1829	newCONSTSUB (coro_stash, "PRIO_MAX", newSViv (PRIO_MAX));
1466	newCONSTSUB (coro_stash, "PRIO_HIGH", newSViv (PRIO_HIGH));	1830	newCONSTSUB (coro_stash, "PRIO_HIGH", newSViv (PRIO_HIGH));
1467	newCONSTSUB (coro_stash, "PRIO_NORMAL", newSViv (PRIO_NORMAL));	1831	newCONSTSUB (coro_stash, "PRIO_NORMAL", newSViv (PRIO_NORMAL));
1468	newCONSTSUB (coro_stash, "PRIO_LOW", newSViv (PRIO_LOW));	1832	newCONSTSUB (coro_stash, "PRIO_LOW", newSViv (PRIO_LOW));
…		…
1471		1835
1472	for (i = PRIO_MAX - PRIO_MIN + 1; i--; )	1836	for (i = PRIO_MAX - PRIO_MIN + 1; i--; )
1473	coro_ready[i] = newAV ();	1837	coro_ready[i] = newAV ();
1474		1838
1475	{	1839	{
1476	SV *sv = perl_get_sv("Coro::API", 1);	1840	SV *sv = perl_get_sv ("Coro::API", TRUE);
		1841	perl_get_sv ("Coro::API", TRUE); /* silence 5.10 warning */
1477		1842
1478	coroapi.schedule = api_schedule;	1843	coroapi.schedule = api_schedule;
1479	coroapi.save = api_save;
1480	coroapi.cede = api_cede;	1844	coroapi.cede = api_cede;
1481	coroapi.cede_notself = api_cede_notself;	1845	coroapi.cede_notself = api_cede_notself;
1482	coroapi.ready = api_ready;	1846	coroapi.ready = api_ready;
1483	coroapi.is_ready = api_is_ready;	1847	coroapi.is_ready = api_is_ready;
1484	coroapi.nready = &coro_nready;	1848	coroapi.nready = &coro_nready;
…		…
1533	CODE:	1897	CODE:
1534	RETVAL = coro_nready;	1898	RETVAL = coro_nready;
1535	OUTPUT:	1899	OUTPUT:
1536	RETVAL	1900	RETVAL
1537		1901
		1902	void
		1903	throw (Coro::State self, SV *throw = &PL_sv_undef)
		1904	PROTOTYPE: $;$
		1905	CODE:
		1906	SvREFCNT_dec (self->throw);
		1907	self->throw = SvOK (throw) ? newSVsv (throw) : 0;
		1908
1538	# for async_pool speedup	1909	# for async_pool speedup
1539	void	1910	void
1540	_pool_1 (SV *cb)	1911	_pool_1 (SV *cb)
1541	CODE:	1912	CODE:
1542	{	1913	{
1543	int i, len;	1914	struct coro *coro = SvSTATE (coro_current);
1544	HV *hv = (HV *)SvRV (coro_current);	1915	HV *hv = (HV *)SvRV (coro_current);
1545	AV *defav = GvAV (PL_defgv);	1916	AV *defav = GvAV (PL_defgv);
1546	SV *invoke = hv_delete (hv, "_invoke", sizeof ("_invoke") - 1, 0);	1917	SV *invoke = hv_delete (hv, strpair ("_invoke"), 0);
1547	AV *invoke_av;	1918	AV *invoke_av;
		1919	int i, len;
1548		1920
1549	if (!invoke)	1921	if (!invoke)
1550	croak ("\3terminate\2\n");	1922	croak ("\3async_pool terminate\2\n");
		1923
		1924	SvREFCNT_dec (coro->saved_deffh);
		1925	coro->saved_deffh = SvREFCNT_inc ((SV *)PL_defoutgv);
1551		1926
1552	hv_store (hv, "desc", sizeof ("desc") - 1,	1927	hv_store (hv, "desc", sizeof ("desc") - 1,
1553	newSVpvn ("[async_pool]", sizeof ("[async_pool]") - 1), 0);	1928	newSVpvn (strpair ("[async_pool]")), 0);
1554		1929
1555	invoke_av = (AV *)SvRV (invoke);	1930	invoke_av = (AV *)SvRV (invoke);
1556	len = av_len (invoke_av);	1931	len = av_len (invoke_av);
1557		1932
1558	sv_setsv (cb, AvARRAY (invoke_av)[0]);	1933	sv_setsv (cb, AvARRAY (invoke_av)[0]);
…		…
1573	{	1948	{
1574	struct coro *coro = SvSTATE (coro_current);	1949	struct coro *coro = SvSTATE (coro_current);
1575		1950
1576	sv_setsv (cb, &PL_sv_undef);	1951	sv_setsv (cb, &PL_sv_undef);
1577		1952
		1953	SvREFCNT_dec ((SV *)PL_defoutgv); PL_defoutgv = (GV *)coro->saved_deffh;
		1954	coro->saved_deffh = 0;
		1955
1578	if (coro_rss (coro) > SvIV (sv_pool_rss)	1956	if (coro_rss (aTHX_ coro) > SvIV (sv_pool_rss)
1579	|| av_len (av_async_pool) + 1 >= SvIV (sv_pool_size))	1957	|| av_len (av_async_pool) + 1 >= SvIV (sv_pool_size))
1580	croak ("\3terminate\2\n");	1958	croak ("\3async_pool terminate\2\n");
1581		1959
1582	av_clear (GvAV (PL_defgv));	1960	av_clear (GvAV (PL_defgv));
1583	hv_store ((HV *)SvRV (coro_current), "desc", sizeof ("desc") - 1,	1961	hv_store ((HV *)SvRV (coro_current), strpair ("desc"),
1584	newSVpvn ("[async_pool idle]", sizeof ("[async_pool idle]") - 1), 0);	1962	newSVpvn (strpair ("[async_pool idle]")), 0);
1585	coro->save = CORO_SAVE_DEF;	1963
1586	coro->prio = 0;	1964	coro->prio = 0;
		1965
		1966	if (coro->cctx && (coro->cctx->flags & CC_TRACE))
		1967	api_trace (coro_current, 0);
		1968
1587	av_push (av_async_pool, newSVsv (coro_current));	1969	av_push (av_async_pool, newSVsv (coro_current));
1588	}	1970	}
1589		1971
1590		1972
1591	MODULE = Coro::State PACKAGE = Coro::AIO	1973	MODULE = Coro::State PACKAGE = Coro::AIO

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