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/cvs/Coro/Coro/State.xs

Comparing Coro/Coro/State.xs (file contents):
Revision 1.158 by root, Fri Sep 21 02:23:48 2007 UTC vs.
Revision 1.217 by root, Wed Nov 14 11:32:56 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
…		…
130	static size_t coro_stacksize = CORO_STACKSIZE;	145	static size_t coro_stacksize = CORO_STACKSIZE;
131	static struct CoroAPI coroapi;	146	static struct CoroAPI coroapi;
132	static AV *main_mainstack; /* used to differentiate between $main and others */	147	static AV *main_mainstack; /* used to differentiate between $main and others */
133	static JMPENV *main_top_env;	148	static JMPENV *main_top_env;
134	static HV *coro_state_stash, *coro_stash;	149	static HV *coro_state_stash, *coro_stash;
135	static SV *coro_mortal; /* will be freed after next transfer */	150	static volatile SV *coro_mortal; /* will be freed after next transfer */
		151
		152	static GV *irsgv; /* $/ */
		153	static GV *stdoutgv; /* *STDOUT */
		154	static SV *rv_diehook;
		155	static SV *rv_warnhook;
		156	static HV *hv_sig; /* %SIG */
		157
		158	/* async_pool helper stuff */
		159	static SV *sv_pool_rss;
		160	static SV *sv_pool_size;
		161	static AV *av_async_pool;
136		162
137	static struct coro_cctx *cctx_first;	163	static struct coro_cctx *cctx_first;
138	static int cctx_count, cctx_idle;	164	static int cctx_count, cctx_idle;
		165
		166	enum {
		167	CC_MAPPED = 0x01,
		168	CC_NOREUSE = 0x02, /* throw this away after tracing */
		169	CC_TRACE = 0x04,
		170	CC_TRACE_SUB = 0x08, /* trace sub calls */
		171	CC_TRACE_LINE = 0x10, /* trace each statement */
		172	CC_TRACE_ALL = CC_TRACE_SUB | CC_TRACE_LINE,
		173	};
139		174
140	/* this is a structure representing a c-level coroutine */	175	/* this is a structure representing a c-level coroutine */
141	typedef struct coro_cctx {	176	typedef struct coro_cctx {
142	struct coro_cctx *next;	177	struct coro_cctx *next;
143		178
…		…
152	coro_context cctx;	187	coro_context cctx;
153		188
154	#if CORO_USE_VALGRIND	189	#if CORO_USE_VALGRIND
155	int valgrind_id;	190	int valgrind_id;
156	#endif	191	#endif
157	char inuse, mapped;	192	unsigned char flags;
158	} coro_cctx;	193	} coro_cctx;
159		194
160	enum {	195	enum {
161	CF_RUNNING = 0x0001, /* coroutine is running */	196	CF_RUNNING = 0x0001, /* coroutine is running */
162	CF_READY = 0x0002, /* coroutine is ready */	197	CF_READY = 0x0002, /* coroutine is ready */
163	CF_NEW = 0x0004, /* has never been switched to */	198	CF_NEW = 0x0004, /* has never been switched to */
164	CF_DESTROYED = 0x0008, /* coroutine data has been freed */	199	CF_DESTROYED = 0x0008, /* coroutine data has been freed */
165	};	200	};
166		201
		202	/* the structure where most of the perl state is stored, overlaid on the cxstack */
		203	typedef struct {
		204	SV *defsv;
		205	AV *defav;
		206	SV *errsv;
		207	SV *irsgv;
		208	#define VAR(name,type) type name;
		209	# include "state.h"
		210	#undef VAR
		211	} perl_slots;
		212
		213	#define SLOT_COUNT ((sizeof (perl_slots) + sizeof (PERL_CONTEXT) - 1) / sizeof (PERL_CONTEXT))
		214
167	/* this is a structure representing a perl-level coroutine */	215	/* this is a structure representing a perl-level coroutine */
168	struct coro {	216	struct coro {
169	/* the c coroutine allocated to this perl coroutine, if any */	217	/* the c coroutine allocated to this perl coroutine, if any */
170	coro_cctx *cctx;	218	coro_cctx *cctx;
171		219
		220	/* process data */
		221	AV *mainstack;
		222	perl_slots *slot; /* basically the saved sp */
		223
172	/* data associated with this coroutine (initial args) */	224	AV *args; /* data associated with this coroutine (initial args) */
173	AV *args;	225	int refcnt; /* coroutines are refcounted, yes */
174	int refcnt;
175	int save; /* CORO_SAVE flags */
176	int flags; /* CF_ flags */	226	int flags; /* CF_ flags */
		227	HV *hv; /* the perl hash associated with this coro, if any */
177		228
178	/* optionally saved, might be zero */	229	/* statistics */
179	AV *defav; /* @_ */	230	int usecount; /* number of transfers to this coro */
180	SV *defsv; /* $_ */
181	SV *errsv; /* $@ */
182	GV *deffh; /* default filehandle */
183	SV *irssv; /* $/ */
184	SV *irssv_sv; /* real $/ cache */
185
186	#define VAR(name,type) type name;
187	# include "state.h"
188	#undef VAR
189		231
190	/* coro process data */	232	/* coro process data */
191	int prio;	233	int prio;
		234	SV *throw; /* exception to be thrown */
		235
		236	/* async_pool */
		237	SV *saved_deffh;
192		238
193	/* linked list */	239	/* linked list */
194	struct coro *next, *prev;	240	struct coro *next, *prev;
195	HV *hv; /* the perl hash associated with this coro, if any */
196	};	241	};
197		242
198	typedef struct coro *Coro__State;	243	typedef struct coro *Coro__State;
199	typedef struct coro *Coro__State_or_hashref;	244	typedef struct coro *Coro__State_or_hashref;
200		245
…		…
212	static AV *coro_ready [PRIO_MAX-PRIO_MIN+1];	257	static AV *coro_ready [PRIO_MAX-PRIO_MIN+1];
213	static int coro_nready;	258	static int coro_nready;
214	static struct coro *coro_first;	259	static struct coro *coro_first;
215		260
216	/** lowlevel stuff **********************************************************/	261	/** lowlevel stuff **********************************************************/
		262
		263	static SV *
		264	coro_get_sv (pTHX_ const char *name, int create)
		265	{
		266	#if PERL_VERSION_ATLEAST (5,9,0)
		267	/* silence stupid and wrong 5.10 warning that I am unable to switch off */
		268	get_sv (name, create);
		269	#endif
		270	return get_sv (name, create);
		271	}
		272
		273	static AV *
		274	coro_get_av (pTHX_ const char *name, int create)
		275	{
		276	#if PERL_VERSION_ATLEAST (5,9,0)
		277	/* silence stupid and wrong 5.10 warning that I am unable to switch off */
		278	get_av (name, create);
		279	#endif
		280	return get_av (name, create);
		281	}
		282
		283	static HV *
		284	coro_get_hv (pTHX_ const char *name, int create)
		285	{
		286	#if PERL_VERSION_ATLEAST (5,9,0)
		287	/* silence stupid and wrong 5.10 warning that I am unable to switch off */
		288	get_hv (name, create);
		289	#endif
		290	return get_hv (name, create);
		291	}
217		292
218	static AV *	293	static AV *
219	coro_clone_padlist (pTHX_ CV *cv)	294	coro_clone_padlist (pTHX_ CV *cv)
220	{	295	{
221	AV *padlist = CvPADLIST (cv);	296	AV *padlist = CvPADLIST (cv);
…		…
269		344
270	/* casting is fun. */	345	/* casting is fun. */
271	while (&PL_sv_undef != (SV *)(padlist = (AV *)av_pop (av)))	346	while (&PL_sv_undef != (SV *)(padlist = (AV *)av_pop (av)))
272	free_padlist (aTHX_ padlist);	347	free_padlist (aTHX_ padlist);
273		348
274	SvREFCNT_dec (av);
275
276	return 0;	349	return 0;
277	}	350	}
278		351
279	#define PERL_MAGIC_coro PERL_MAGIC_ext	352	#define CORO_MAGIC_type_cv PERL_MAGIC_ext
		353	#define CORO_MAGIC_type_state PERL_MAGIC_ext
280		354
281	static MGVTBL vtbl_coro = {0, 0, 0, 0, coro_cv_free};	355	static MGVTBL coro_cv_vtbl = {
		356	0, 0, 0, 0,
		357	coro_cv_free
		358	};
282		359
283	#define CORO_MAGIC(cv) \	360	#define CORO_MAGIC(sv,type) \
284	SvMAGIC (cv) \	361	SvMAGIC (sv) \
285	? SvMAGIC (cv)->mg_type == PERL_MAGIC_coro \	362	? SvMAGIC (sv)->mg_type == type \
286	? SvMAGIC (cv) \	363	? SvMAGIC (sv) \
287	: mg_find ((SV *)cv, PERL_MAGIC_coro) \	364	: mg_find (sv, type) \
288	: 0	365	: 0
289		366
		367	#define CORO_MAGIC_cv(cv) CORO_MAGIC (((SV *)(cv)), CORO_MAGIC_type_cv)
		368	#define CORO_MAGIC_state(sv) CORO_MAGIC (((SV *)(sv)), CORO_MAGIC_type_state)
		369
		370	static struct coro *
		371	SvSTATE_ (pTHX_ SV *coro)
		372	{
		373	HV *stash;
		374	MAGIC *mg;
		375
		376	if (SvROK (coro))
		377	coro = SvRV (coro);
		378
		379	if (expect_false (SvTYPE (coro) != SVt_PVHV))
		380	croak ("Coro::State object required");
		381
		382	stash = SvSTASH (coro);
		383	if (expect_false (stash != coro_stash && stash != coro_state_stash))
		384	{
		385	/* very slow, but rare, check */
		386	if (!sv_derived_from (sv_2mortal (newRV_inc (coro)), "Coro::State"))
		387	croak ("Coro::State object required");
		388	}
		389
		390	mg = CORO_MAGIC_state (coro);
		391	return (struct coro *)mg->mg_ptr;
		392	}
		393
		394	#define SvSTATE(sv) SvSTATE_ (aTHX_ (sv))
		395
290	/* the next two functions merely cache the padlists */	396	/* the next two functions merely cache the padlists */
291	static void	397	static void
292	get_padlist (pTHX_ CV *cv)	398	get_padlist (pTHX_ CV *cv)
293	{	399	{
294	MAGIC *mg = CORO_MAGIC (cv);	400	MAGIC *mg = CORO_MAGIC_cv (cv);
295	AV *av;	401	AV *av;
296		402
297	if (mg && AvFILLp ((av = (AV *)mg->mg_obj)) >= 0)	403	if (expect_true (mg && AvFILLp ((av = (AV *)mg->mg_obj)) >= 0))
298	CvPADLIST (cv) = (AV *)AvARRAY (av)[AvFILLp (av)--];	404	CvPADLIST (cv) = (AV *)AvARRAY (av)[AvFILLp (av)--];
299	else	405	else
300	{	406	{
301	#if CORO_PREFER_PERL_FUNCTIONS	407	#if CORO_PREFER_PERL_FUNCTIONS
302	/* this is probably cleaner, but also slower? */	408	/* this is probably cleaner, but also slower? */
…		…
311	}	417	}
312		418
313	static void	419	static void
314	put_padlist (pTHX_ CV *cv)	420	put_padlist (pTHX_ CV *cv)
315	{	421	{
316	MAGIC *mg = CORO_MAGIC (cv);	422	MAGIC *mg = CORO_MAGIC_cv (cv);
317	AV *av;	423	AV *av;
318		424
319	if (!mg)	425	if (expect_false (!mg))
320	{	426	mg = sv_magicext ((SV *)cv, (SV *)newAV (), CORO_MAGIC_type_cv, &coro_cv_vtbl, 0, 0);
321	sv_magic ((SV *)cv, 0, PERL_MAGIC_coro, 0, 0);
322	mg = mg_find ((SV *)cv, PERL_MAGIC_coro);
323	mg->mg_virtual = &vtbl_coro;
324	mg->mg_obj = (SV *)newAV ();
325	}
326		427
327	av = (AV *)mg->mg_obj;	428	av = (AV *)mg->mg_obj;
328		429
329	if (AvFILLp (av) >= AvMAX (av))	430	if (expect_false (AvFILLp (av) >= AvMAX (av)))
330	av_extend (av, AvMAX (av) + 1);	431	av_extend (av, AvMAX (av) + 1);
331		432
332	AvARRAY (av)[++AvFILLp (av)] = (SV *)CvPADLIST (cv);	433	AvARRAY (av)[++AvFILLp (av)] = (SV *)CvPADLIST (cv);
333	}	434	}
334		435
335	/** load & save, init *******************************************************/	436	/** load & save, init *******************************************************/
336		437
337	#define SB do {
338	#define SE } while (0)
339
340	#define REPLACE_SV(sv,val) SB SvREFCNT_dec (sv); (sv) = (val); (val) = 0; SE
341
342	static void	438	static void
343	load_perl (pTHX_ Coro__State c)	439	load_perl (pTHX_ Coro__State c)
344	{	440	{
		441	perl_slots *slot = c->slot;
		442	c->slot = 0;
		443
		444	PL_mainstack = c->mainstack;
		445
		446	GvSV (PL_defgv) = slot->defsv;
		447	GvAV (PL_defgv) = slot->defav;
		448	GvSV (PL_errgv) = slot->errsv;
		449	GvSV (irsgv) = slot->irsgv;
		450
345	#define VAR(name,type) PL_ ## name = c->name;	451	#define VAR(name,type) PL_ ## name = slot->name;
346	# include "state.h"	452	# include "state.h"
347	#undef VAR	453	#undef VAR
348
349	if (c->defav) REPLACE_SV (GvAV (PL_defgv), c->defav);
350	if (c->defsv) REPLACE_SV (DEFSV , c->defsv);
351	if (c->errsv) REPLACE_SV (ERRSV , c->errsv);
352	if (c->deffh) REPLACE_SV (PL_defoutgv , c->deffh);
353
354	if (c->irssv)
355	{
356	if (c->irssv == PL_rs || sv_eq (PL_rs, c->irssv))
357	{
358	SvREFCNT_dec (c->irssv);
359	c->irssv = 0;
360	}
361	else
362	{
363	REPLACE_SV (PL_rs, c->irssv);
364	if (!c->irssv_sv) c->irssv_sv = get_sv ("/", 0);
365	sv_setsv (c->irssv_sv, PL_rs);
366	}
367	}
368		454
369	{	455	{
370	dSP;	456	dSP;
		457
371	CV *cv;	458	CV *cv;
372		459
373	/* now do the ugly restore mess */	460	/* now do the ugly restore mess */
374	while ((cv = (CV *)POPs))	461	while (expect_true (cv = (CV *)POPs))
375	{	462	{
376	put_padlist (aTHX_ cv); /* mark this padlist as available */	463	put_padlist (aTHX_ cv); /* mark this padlist as available */
377	CvDEPTH (cv) = PTR2IV (POPs);	464	CvDEPTH (cv) = PTR2IV (POPs);
378	CvPADLIST (cv) = (AV *)POPs;	465	CvPADLIST (cv) = (AV *)POPs;
379	}	466	}
…		…
398		485
399	XPUSHs (Nullsv);	486	XPUSHs (Nullsv);
400	/* this loop was inspired by pp_caller */	487	/* this loop was inspired by pp_caller */
401	for (;;)	488	for (;;)
402	{	489	{
403	while (cxix >= 0)	490	while (expect_true (cxix >= 0))
404	{	491	{
405	PERL_CONTEXT *cx = &ccstk[cxix--];	492	PERL_CONTEXT *cx = &ccstk[cxix--];
406		493
407	if (CxTYPE (cx) == CXt_SUB || CxTYPE (cx) == CXt_FORMAT)	494	if (expect_true (CxTYPE (cx) == CXt_SUB || CxTYPE (cx) == CXt_FORMAT))
408	{	495	{
409	CV *cv = cx->blk_sub.cv;	496	CV *cv = cx->blk_sub.cv;
410		497
411	if (CvDEPTH (cv))	498	if (expect_true (CvDEPTH (cv)))
412	{	499	{
413	EXTEND (SP, 3);	500	EXTEND (SP, 3);
414	PUSHs ((SV *)CvPADLIST (cv));	501	PUSHs ((SV *)CvPADLIST (cv));
415	PUSHs (INT2PTR (SV *, CvDEPTH (cv)));	502	PUSHs (INT2PTR (SV *, CvDEPTH (cv)));
416	PUSHs ((SV *)cv);	503	PUSHs ((SV *)cv);
…		…
419	get_padlist (aTHX_ cv);	506	get_padlist (aTHX_ cv);
420	}	507	}
421	}	508	}
422	}	509	}
423		510
424	if (top_si->si_type == PERLSI_MAIN)	511	if (expect_true (top_si->si_type == PERLSI_MAIN))
425	break;	512	break;
426		513
427	top_si = top_si->si_prev;	514	top_si = top_si->si_prev;
428	ccstk = top_si->si_cxstack;	515	ccstk = top_si->si_cxstack;
429	cxix = top_si->si_cxix;	516	cxix = top_si->si_cxix;
430	}	517	}
431		518
432	PUTBACK;	519	PUTBACK;
433	}	520	}
434		521
435	c->defav = c->save & CORO_SAVE_DEFAV ? (AV *)SvREFCNT_inc (GvAV (PL_defgv)) : 0;	522	/* allocate some space on the context stack for our purposes */
436	c->defsv = c->save & CORO_SAVE_DEFSV ? SvREFCNT_inc (DEFSV) : 0;	523	/* we manually unroll here, as usually 2 slots is enough */
437	c->errsv = c->save & CORO_SAVE_ERRSV ? SvREFCNT_inc (ERRSV) : 0;	524	if (SLOT_COUNT >= 1) CXINC;
438	c->deffh = c->save & CORO_SAVE_DEFFH ? (GV *)SvREFCNT_inc (PL_defoutgv) : 0;	525	if (SLOT_COUNT >= 2) CXINC;
439	c->irssv = c->save & CORO_SAVE_IRSSV ? SvREFCNT_inc (PL_rs) : 0;	526	if (SLOT_COUNT >= 3) CXINC;
		527	{
		528	int i;
		529	for (i = 3; i < SLOT_COUNT; ++i)
		530	CXINC;
		531	}
		532	cxstack_ix -= SLOT_COUNT; /* undo allocation */
440		533
		534	c->mainstack = PL_mainstack;
		535
		536	{
		537	perl_slots *slot = c->slot = (perl_slots *)(cxstack + cxstack_ix + 1);
		538
		539	slot->defav = GvAV (PL_defgv);
		540	slot->defsv = DEFSV;
		541	slot->errsv = ERRSV;
		542	slot->irsgv = GvSV (irsgv);
		543
441	#define VAR(name,type)c->name = PL_ ## name;	544	#define VAR(name,type) slot->name = PL_ ## name;
442	# include "state.h"	545	# include "state.h"
443	#undef VAR	546	#undef VAR
		547	}
444	}	548	}
445		549
446	/*	550	/*
447	* allocate various perl stacks. This is an exact copy	551	* allocate various perl stacks. This is an exact copy
448	* of perl.c:init_stacks, except that it uses less memory	552	* of perl.c:init_stacks, except that it uses less memory
…		…
453	# define coro_init_stacks init_stacks	557	# define coro_init_stacks init_stacks
454	#else	558	#else
455	static void	559	static void
456	coro_init_stacks (pTHX)	560	coro_init_stacks (pTHX)
457	{	561	{
458	PL_curstackinfo = new_stackinfo(64, 6);	562	PL_curstackinfo = new_stackinfo(32, 8);
459	PL_curstackinfo->si_type = PERLSI_MAIN;	563	PL_curstackinfo->si_type = PERLSI_MAIN;
460	PL_curstack = PL_curstackinfo->si_stack;	564	PL_curstack = PL_curstackinfo->si_stack;
461	PL_mainstack = PL_curstack; /* remember in case we switch stacks */	565	PL_mainstack = PL_curstack; /* remember in case we switch stacks */
462		566
463	PL_stack_base = AvARRAY(PL_curstack);	567	PL_stack_base = AvARRAY(PL_curstack);
464	PL_stack_sp = PL_stack_base;	568	PL_stack_sp = PL_stack_base;
465	PL_stack_max = PL_stack_base + AvMAX(PL_curstack);	569	PL_stack_max = PL_stack_base + AvMAX(PL_curstack);
466		570
467	New(50,PL_tmps_stack,64,SV*);	571	New(50,PL_tmps_stack,32,SV*);
468	PL_tmps_floor = -1;	572	PL_tmps_floor = -1;
469	PL_tmps_ix = -1;	573	PL_tmps_ix = -1;
470	PL_tmps_max = 64;	574	PL_tmps_max = 32;
471		575
472	New(54,PL_markstack,16,I32);	576	New(54,PL_markstack,16,I32);
473	PL_markstack_ptr = PL_markstack;	577	PL_markstack_ptr = PL_markstack;
474	PL_markstack_max = PL_markstack + 16;	578	PL_markstack_max = PL_markstack + 16;
475		579
476	#ifdef SET_MARK_OFFSET	580	#ifdef SET_MARK_OFFSET
477	SET_MARK_OFFSET;	581	SET_MARK_OFFSET;
478	#endif	582	#endif
479		583
480	New(54,PL_scopestack,16,I32);	584	New(54,PL_scopestack,8,I32);
481	PL_scopestack_ix = 0;	585	PL_scopestack_ix = 0;
482	PL_scopestack_max = 16;	586	PL_scopestack_max = 8;
483		587
484	New(54,PL_savestack,64,ANY);	588	New(54,PL_savestack,24,ANY);
485	PL_savestack_ix = 0;	589	PL_savestack_ix = 0;
486	PL_savestack_max = 64;	590	PL_savestack_max = 24;
487		591
488	#if !PERL_VERSION_ATLEAST (5,9,0)	592	#if !PERL_VERSION_ATLEAST (5,9,0)
489	New(54,PL_retstack,4,OP*);	593	New(54,PL_retstack,4,OP*);
490	PL_retstack_ix = 0;	594	PL_retstack_ix = 0;
491	PL_retstack_max = 4;	595	PL_retstack_max = 4;
…		…
497	* destroy the stacks, the callchain etc...	601	* destroy the stacks, the callchain etc...
498	*/	602	*/
499	static void	603	static void
500	coro_destroy_stacks (pTHX)	604	coro_destroy_stacks (pTHX)
501	{	605	{
502	if (!IN_DESTRUCT)
503	{
504	/* restore all saved variables and stuff */
505	LEAVE_SCOPE (0);
506	assert (PL_tmps_floor == -1);
507
508	/* free all temporaries */
509	FREETMPS;
510	assert (PL_tmps_ix == -1);
511
512	/* unwind all extra stacks */
513	POPSTACK_TO (PL_mainstack);
514
515	/* unwind main stack */
516	dounwind (-1);
517	}
518
519	while (PL_curstackinfo->si_next)	606	while (PL_curstackinfo->si_next)
520	PL_curstackinfo = PL_curstackinfo->si_next;	607	PL_curstackinfo = PL_curstackinfo->si_next;
521		608
522	while (PL_curstackinfo)	609	while (PL_curstackinfo)
523	{	610	{
…		…
539	Safefree (PL_retstack);	626	Safefree (PL_retstack);
540	#endif	627	#endif
541	}	628	}
542		629
543	static size_t	630	static size_t
544	coro_rss (struct coro *coro)	631	coro_rss (pTHX_ struct coro *coro)
545	{	632	{
546	size_t rss = sizeof (coro);	633	size_t rss = sizeof (*coro);
547		634
548	if (coro->mainstack)	635	if (coro->mainstack)
549	{	636	{
		637	perl_slots tmp_slot;
		638	perl_slots *slot;
		639
550	if (coro->flags & CF_RUNNING)	640	if (coro->flags & CF_RUNNING)
551	{	641	{
		642	slot = &tmp_slot;
		643
552	#define VAR(name,type)coro->name = PL_ ## name;	644	#define VAR(name,type) slot->name = PL_ ## name;
553	# include "state.h"	645	# include "state.h"
554	#undef VAR	646	#undef VAR
555	}	647	}
		648	else
		649	slot = coro->slot;
556		650
557	rss += sizeof (coro->curstackinfo);	651	rss += sizeof (slot->curstackinfo);
558	rss += sizeof (struct xpvav) + (1 + AvFILL (coro->curstackinfo->si_stack)) * sizeof (SV *);
559	rss += (coro->curstackinfo->si_cxmax + 1) * sizeof (PERL_CONTEXT);	652	rss += (slot->curstackinfo->si_cxmax + 1) * sizeof (PERL_CONTEXT);
560	rss += sizeof (struct xpvav) + (1 + AvFILL (coro->curstack)) * sizeof (SV *);	653	rss += sizeof (SV) + sizeof (struct xpvav) + (1 + AvMAX (slot->curstack)) * sizeof (SV *);
561	rss += coro->tmps_max * sizeof (SV *);	654	rss += slot->tmps_max * sizeof (SV *);
562	rss += (coro->markstack_max - coro->markstack_ptr) * sizeof (I32);	655	rss += (slot->markstack_max - slot->markstack_ptr) * sizeof (I32);
563	rss += coro->scopestack_max * sizeof (I32);	656	rss += slot->scopestack_max * sizeof (I32);
564	rss += coro->savestack_max * sizeof (ANY);	657	rss += slot->savestack_max * sizeof (ANY);
565		658
566	#if !PERL_VERSION_ATLEAST (5,9,0)	659	#if !PERL_VERSION_ATLEAST (5,9,0)
567	rss += coro->retstack_max * sizeof (OP *);	660	rss += slot->retstack_max * sizeof (OP *);
568	#endif	661	#endif
569	}	662	}
570		663
571	return rss;	664	return rss;
572	}	665	}
573		666
574	/** coroutine stack handling ************************************************/	667	/** coroutine stack handling ************************************************/
575		668
		669	#if 0
		670	static int (*orig_sigelem_get) (pTHX_ SV *sv, MAGIC *mg);
		671
		672	/*
		673	* This overrides the default magic get method of %SIG elements.
		674	* The original one doesn't provide for reading back of PL_diehook/PL_warnhook
		675	* and instead of tryign to save and restore the hash elements, we just provide
		676	* readback here.
		677	* We only do this when the hook is != 0, as they are often set to 0 temporarily,
		678	* not expecting this to actually change the hook. This is a potential problem
		679	* when a schedule happens then, but we ignore this.
		680	*/
576	static void	681	static int
		682	coro_sigelem_get (pTHX_ SV *sv, MAGIC *mg)
		683	{
		684	return orig_sigelem_get (aTHX_ sv, mg);
		685	const char *s = MgPV_nolen_const (mg);
		686
		687	if (*s == '_')
		688	{
		689	if (strEQ (s, "__DIE__" ) && PL_diehook ) return sv_setsv (sv, PL_diehook ), 0;
		690	if (strEQ (s, "__WARN__") && PL_warnhook) return sv_setsv (sv, PL_warnhook), 0;
		691	}
		692
		693	return orig_sigelem_get (aTHX_ sv, mg);
		694	}
		695	#endif
		696
		697	static void
577	setup_coro (pTHX_ struct coro *coro)	698	coro_setup (pTHX_ struct coro *coro)
578	{	699	{
579	/*	700	/*
580	* emulate part of the perl startup here.	701	* emulate part of the perl startup here.
581	*/	702	*/
582	coro_init_stacks (aTHX);	703	coro_init_stacks (aTHX);
583		704
		705	PL_runops = RUNOPS_DEFAULT;
584	PL_curcop = &PL_compiling;	706	PL_curcop = &PL_compiling;
585	PL_in_eval = EVAL_NULL;	707	PL_in_eval = EVAL_NULL;
586	PL_comppad = 0;	708	PL_comppad = 0;
587	PL_curpm = 0;	709	PL_curpm = 0;
		710	PL_curpad = 0;
588	PL_localizing = 0;	711	PL_localizing = 0;
589	PL_dirty = 0;	712	PL_dirty = 0;
590	PL_restartop = 0;	713	PL_restartop = 0;
591		714
		715	/* recreate the die/warn hooks */
		716	PL_diehook = 0;
		717	hv_store (hv_sig, "__DIE__", sizeof ("__DIE__") - 1, newSV (0), 0);
		718	PL_diehook = SvREFCNT_inc (rv_diehook);
		719
		720	PL_warnhook = 0;
		721	hv_store (hv_sig, "__WARN__", sizeof ("__WARN__") - 1, newSV (0), 0);
		722	PL_warnhook = SvREFCNT_inc (rv_warnhook);
		723
		724	GvSV (PL_defgv) = newSV (0);
		725	GvAV (PL_defgv) = coro->args; coro->args = 0;
		726	GvSV (PL_errgv) = newSV (0);
		727	GvSV (irsgv) = newSVpvn ("\n", 1); sv_magic (GvSV (irsgv), (SV *)irsgv, PERL_MAGIC_sv, "/", 0);
		728	PL_rs = newSVsv (GvSV (irsgv));
		729	PL_defoutgv = (GV *)SvREFCNT_inc (stdoutgv);
		730
592	{	731	{
593	dSP;	732	dSP;
594	LOGOP myop;	733	LOGOP myop;
595		734
596	SvREFCNT_dec (GvAV (PL_defgv));
597	GvAV (PL_defgv) = coro->args; coro->args = 0;
598
599	Zero (&myop, 1, LOGOP);	735	Zero (&myop, 1, LOGOP);
600	myop.op_next = Nullop;	736	myop.op_next = Nullop;
601	myop.op_flags = OPf_WANT_VOID;	737	myop.op_flags = OPf_WANT_VOID;
602		738
603	PUSHMARK (SP);	739	PUSHMARK (SP);
604	XPUSHs (av_shift (GvAV (PL_defgv)));	740	XPUSHs (sv_2mortal (av_shift (GvAV (PL_defgv))));
605	PUTBACK;	741	PUTBACK;
606	PL_op = (OP *)&myop;	742	PL_op = (OP *)&myop;
607	PL_op = PL_ppaddr[OP_ENTERSUB](aTHX);	743	PL_op = PL_ppaddr[OP_ENTERSUB](aTHX);
608	SPAGAIN;	744	SPAGAIN;
609	}	745	}
610		746
611	ENTER; /* necessary e.g. for dounwind */	747	/* this newly created coroutine might be run on an existing cctx which most
		748	* likely was suspended in set_stacklevel, called from entersub.
		749	* set_stacklevl doesn't do anything on return, but entersub does LEAVE,
		750	* so we ENTER here for symmetry
		751	*/
		752	ENTER;
		753	}
		754
		755	static void
		756	coro_destroy (pTHX_ struct coro *coro)
		757	{
		758	if (!IN_DESTRUCT)
		759	{
		760	/* restore all saved variables and stuff */
		761	LEAVE_SCOPE (0);
		762	assert (PL_tmps_floor == -1);
		763
		764	/* free all temporaries */
		765	FREETMPS;
		766	assert (PL_tmps_ix == -1);
		767
		768	/* unwind all extra stacks */
		769	POPSTACK_TO (PL_mainstack);
		770
		771	/* unwind main stack */
		772	dounwind (-1);
		773	}
		774
		775	SvREFCNT_dec (GvSV (PL_defgv));
		776	SvREFCNT_dec (GvAV (PL_defgv));
		777	SvREFCNT_dec (GvSV (PL_errgv));
		778	SvREFCNT_dec (PL_defoutgv);
		779	SvREFCNT_dec (PL_rs);
		780	SvREFCNT_dec (GvSV (irsgv));
		781
		782	SvREFCNT_dec (PL_diehook);
		783	SvREFCNT_dec (PL_warnhook);
		784
		785	SvREFCNT_dec (coro->saved_deffh);
		786	SvREFCNT_dec (coro->throw);
		787
		788	coro_destroy_stacks (aTHX);
612	}	789	}
613		790
614	static void	791	static void
615	free_coro_mortal (pTHX)	792	free_coro_mortal (pTHX)
616	{	793	{
617	if (coro_mortal)	794	if (expect_true (coro_mortal))
618	{	795	{
619	SvREFCNT_dec (coro_mortal);	796	SvREFCNT_dec (coro_mortal);
620	coro_mortal = 0;	797	coro_mortal = 0;
621	}	798	}
		799	}
		800
		801	static int
		802	runops_trace (pTHX)
		803	{
		804	COP *oldcop = 0;
		805	int oldcxix = -2;
		806	struct coro *coro = SvSTATE (coro_current); /* trace cctx is tied to specific coro */
		807	coro_cctx *cctx = coro->cctx;
		808
		809	while ((PL_op = CALL_FPTR (PL_op->op_ppaddr) (aTHX)))
		810	{
		811	PERL_ASYNC_CHECK ();
		812
		813	if (cctx->flags & CC_TRACE_ALL)
		814	{
		815	if (PL_op->op_type == OP_LEAVESUB && cctx->flags & CC_TRACE_SUB)
		816	{
		817	PERL_CONTEXT *cx = &cxstack[cxstack_ix];
		818	SV **bot, **top;
		819	AV *av = newAV (); /* return values */
		820	SV **cb;
		821	dSP;
		822
		823	GV *gv = CvGV (cx->blk_sub.cv);
		824	SV *fullname = sv_2mortal (newSV (0));
		825	if (isGV (gv))
		826	gv_efullname3 (fullname, gv, 0);
		827
		828	bot = PL_stack_base + cx->blk_oldsp + 1;
		829	top = cx->blk_gimme == G_ARRAY ? SP + 1
		830	: cx->blk_gimme == G_SCALAR ? bot + 1
		831	: bot;
		832
		833	av_extend (av, top - bot);
		834	while (bot < top)
		835	av_push (av, SvREFCNT_inc (*bot++));
		836
		837	PL_runops = RUNOPS_DEFAULT;
		838	ENTER;
		839	SAVETMPS;
		840	EXTEND (SP, 3);
		841	PUSHMARK (SP);
		842	PUSHs (&PL_sv_no);
		843	PUSHs (fullname);
		844	PUSHs (sv_2mortal (newRV_noinc ((SV *)av)));
		845	PUTBACK;
		846	cb = hv_fetch ((HV *)SvRV (coro_current), "_trace_sub_cb", sizeof ("_trace_sub_cb") - 1, 0);
		847	if (cb) call_sv (*cb, G_KEEPERR | G_EVAL | G_VOID | G_DISCARD);
		848	SPAGAIN;
		849	FREETMPS;
		850	LEAVE;
		851	PL_runops = runops_trace;
		852	}
		853
		854	if (oldcop != PL_curcop)
		855	{
		856	oldcop = PL_curcop;
		857
		858	if (PL_curcop != &PL_compiling)
		859	{
		860	SV **cb;
		861
		862	if (oldcxix != cxstack_ix && cctx->flags & CC_TRACE_SUB)
		863	{
		864	PERL_CONTEXT *cx = &cxstack[cxstack_ix];
		865
		866	if (CxTYPE (cx) == CXt_SUB && oldcxix < cxstack_ix)
		867	{
		868	runops_proc_t old_runops = PL_runops;
		869	dSP;
		870	GV *gv = CvGV (cx->blk_sub.cv);
		871	SV *fullname = sv_2mortal (newSV (0));
		872
		873	if (isGV (gv))
		874	gv_efullname3 (fullname, gv, 0);
		875
		876	PL_runops = RUNOPS_DEFAULT;
		877	ENTER;
		878	SAVETMPS;
		879	EXTEND (SP, 3);
		880	PUSHMARK (SP);
		881	PUSHs (&PL_sv_yes);
		882	PUSHs (fullname);
		883	PUSHs (cx->blk_sub.hasargs ? sv_2mortal (newRV_inc ((SV *)cx->blk_sub.argarray)) : &PL_sv_undef);
		884	PUTBACK;
		885	cb = hv_fetch ((HV *)SvRV (coro_current), "_trace_sub_cb", sizeof ("_trace_sub_cb") - 1, 0);
		886	if (cb) call_sv (*cb, G_KEEPERR | G_EVAL | G_VOID | G_DISCARD);
		887	SPAGAIN;
		888	FREETMPS;
		889	LEAVE;
		890	PL_runops = runops_trace;
		891	}
		892
		893	oldcxix = cxstack_ix;
		894	}
		895
		896	if (cctx->flags & CC_TRACE_LINE)
		897	{
		898	dSP;
		899
		900	PL_runops = RUNOPS_DEFAULT;
		901	ENTER;
		902	SAVETMPS;
		903	EXTEND (SP, 3);
		904	PL_runops = RUNOPS_DEFAULT;
		905	PUSHMARK (SP);
		906	PUSHs (sv_2mortal (newSVpv (OutCopFILE (oldcop), 0)));
		907	PUSHs (sv_2mortal (newSViv (CopLINE (oldcop))));
		908	PUTBACK;
		909	cb = hv_fetch ((HV *)SvRV (coro_current), "_trace_line_cb", sizeof ("_trace_line_cb") - 1, 0);
		910	if (cb) call_sv (*cb, G_KEEPERR | G_EVAL | G_VOID | G_DISCARD);
		911	SPAGAIN;
		912	FREETMPS;
		913	LEAVE;
		914	PL_runops = runops_trace;
		915	}
		916	}
		917	}
		918	}
		919	}
		920
		921	TAINT_NOT;
		922	return 0;
622	}	923	}
623		924
624	/* inject a fake call to Coro::State::_cctx_init into the execution */	925	/* 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 */	926	/* _cctx_init should be careful, as it could be called at almost any time */
626	/* during execution of a perl program */	927	/* during execution of a perl program */
627	static void NOINLINE	928	static void NOINLINE
628	prepare_cctx (pTHX_ coro_cctx *cctx)	929	cctx_prepare (pTHX_ coro_cctx *cctx)
629	{	930	{
630	dSP;	931	dSP;
631	LOGOP myop;	932	LOGOP myop;
		933
		934	PL_top_env = &PL_start_env;
		935
		936	if (cctx->flags & CC_TRACE)
		937	PL_runops = runops_trace;
632		938
633	Zero (&myop, 1, LOGOP);	939	Zero (&myop, 1, LOGOP);
634	myop.op_next = PL_op;	940	myop.op_next = PL_op;
635	myop.op_flags = OPf_WANT_VOID | OPf_STACKED;	941	myop.op_flags = OPf_WANT_VOID | OPf_STACKED;
636		942
…		…
646		952
647	/*	953	/*
648	* this is a _very_ stripped down perl interpreter ;)	954	* this is a _very_ stripped down perl interpreter ;)
649	*/	955	*/
650	static void	956	static void
651	coro_run (void *arg)	957	cctx_run (void *arg)
652	{	958	{
653	dTHX;	959	dTHX;
654		960
655	/* coro_run is the alternative tail of transfer(), so unlock here. */	961	/* cctx_run is the alternative tail of transfer(), so unlock here. */
656	UNLOCK;	962	UNLOCK;
657		963
658	PL_top_env = &PL_start_env;	964	/* we now skip the entersub that lead to transfer() */
		965	PL_op = PL_op->op_next;
659		966
660	/* inject a fake subroutine call to cctx_init */	967	/* inject a fake subroutine call to cctx_init */
661	prepare_cctx (aTHX_ (coro_cctx *)arg);	968	cctx_prepare (aTHX_ (coro_cctx *)arg);
662		969
663	/* somebody or something will hit me for both perl_run and PL_restartop */	970	/* somebody or something will hit me for both perl_run and PL_restartop */
664	PL_restartop = PL_op;	971	PL_restartop = PL_op;
665	perl_run (PL_curinterp);	972	perl_run (PL_curinterp);
666		973
…		…
685	++cctx_count;	992	++cctx_count;
686		993
687	Newz (0, cctx, 1, coro_cctx);	994	Newz (0, cctx, 1, coro_cctx);
688		995
689	#if HAVE_MMAP	996	#if HAVE_MMAP
690
691	cctx->ssize = ((coro_stacksize * sizeof (long) + PAGESIZE - 1) / PAGESIZE + CORO_STACKGUARD) * PAGESIZE;	997	cctx->ssize = ((coro_stacksize * sizeof (long) + PAGESIZE - 1) / PAGESIZE + CORO_STACKGUARD) * PAGESIZE;
692	/* mmap supposedly does allocate-on-write for us */	998	/* 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);	999	cctx->sptr = mmap (0, cctx->ssize, PROT_EXEC|PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, 0, 0);
694		1000
695	if (cctx->sptr != (void *)-1)	1001	if (cctx->sptr != (void *)-1)
…		…
697	# if CORO_STACKGUARD	1003	# if CORO_STACKGUARD
698	mprotect (cctx->sptr, CORO_STACKGUARD * PAGESIZE, PROT_NONE);	1004	mprotect (cctx->sptr, CORO_STACKGUARD * PAGESIZE, PROT_NONE);
699	# endif	1005	# endif
700	stack_start = CORO_STACKGUARD * PAGESIZE + (char *)cctx->sptr;	1006	stack_start = CORO_STACKGUARD * PAGESIZE + (char *)cctx->sptr;
701	stack_size = cctx->ssize - CORO_STACKGUARD * PAGESIZE;	1007	stack_size = cctx->ssize - CORO_STACKGUARD * PAGESIZE;
702	cctx->mapped = 1;	1008	cctx->flags |= CC_MAPPED;
703	}	1009	}
704	else	1010	else
705	#endif	1011	#endif
706	{	1012	{
707	cctx->ssize = coro_stacksize * (long)sizeof (long);	1013	cctx->ssize = coro_stacksize * (long)sizeof (long);
…		…
716	stack_start = cctx->sptr;	1022	stack_start = cctx->sptr;
717	stack_size = cctx->ssize;	1023	stack_size = cctx->ssize;
718	}	1024	}
719		1025
720	REGISTER_STACK (cctx, (char *)stack_start, (char *)stack_start + stack_size);	1026	REGISTER_STACK (cctx, (char *)stack_start, (char *)stack_start + stack_size);
721	coro_create (&cctx->cctx, coro_run, (void *)cctx, stack_start, stack_size);	1027	coro_create (&cctx->cctx, cctx_run, (void *)cctx, stack_start, stack_size);
722		1028
723	return cctx;	1029	return cctx;
724	}	1030	}
725		1031
726	static void	1032	static void
…		…
734	#if CORO_USE_VALGRIND	1040	#if CORO_USE_VALGRIND
735	VALGRIND_STACK_DEREGISTER (cctx->valgrind_id);	1041	VALGRIND_STACK_DEREGISTER (cctx->valgrind_id);
736	#endif	1042	#endif
737		1043
738	#if HAVE_MMAP	1044	#if HAVE_MMAP
739	if (cctx->mapped)	1045	if (cctx->flags & CC_MAPPED)
740	munmap (cctx->sptr, cctx->ssize);	1046	munmap (cctx->sptr, cctx->ssize);
741	else	1047	else
742	#endif	1048	#endif
743	Safefree (cctx->sptr);	1049	Safefree (cctx->sptr);
744		1050
745	Safefree (cctx);	1051	Safefree (cctx);
746	}	1052	}
747		1053
		1054	/* wether this cctx should be destructed */
		1055	#define CCTX_EXPIRED(cctx) ((cctx)->ssize < coro_stacksize || ((cctx)->flags & CC_NOREUSE))
		1056
748	static coro_cctx *	1057	static coro_cctx *
749	cctx_get (pTHX)	1058	cctx_get (pTHX)
750	{	1059	{
751	while (cctx_first)	1060	while (expect_true (cctx_first))
752	{	1061	{
753	coro_cctx *cctx = cctx_first;	1062	coro_cctx *cctx = cctx_first;
754	cctx_first = cctx->next;	1063	cctx_first = cctx->next;
755	--cctx_idle;	1064	--cctx_idle;
756		1065
757	if (cctx->ssize >= coro_stacksize)	1066	if (expect_true (!CCTX_EXPIRED (cctx)))
758	return cctx;	1067	return cctx;
759		1068
760	cctx_destroy (cctx);	1069	cctx_destroy (cctx);
761	}	1070	}
762		1071
763	PL_op = PL_op->op_next;
764	return cctx_new ();	1072	return cctx_new ();
765	}	1073	}
766		1074
767	static void	1075	static void
768	cctx_put (coro_cctx *cctx)	1076	cctx_put (coro_cctx *cctx)
769	{	1077	{
770	/* free another cctx if overlimit */	1078	/* free another cctx if overlimit */
771	if (cctx_idle >= MAX_IDLE_CCTX)	1079	if (expect_false (cctx_idle >= MAX_IDLE_CCTX))
772	{	1080	{
773	coro_cctx *first = cctx_first;	1081	coro_cctx *first = cctx_first;
774	cctx_first = first->next;	1082	cctx_first = first->next;
775	--cctx_idle;	1083	--cctx_idle;
776		1084
777	assert (!first->inuse);
778	cctx_destroy (first);	1085	cctx_destroy (first);
779	}	1086	}
780		1087
781	++cctx_idle;	1088	++cctx_idle;
782	cctx->next = cctx_first;	1089	cctx->next = cctx_first;
783	cctx_first = cctx;	1090	cctx_first = cctx;
784	}	1091	}
785		1092
786	/** coroutine switching *****************************************************/	1093	/** coroutine switching *****************************************************/
787		1094
788	/* never call directly, always through the coro_state_transfer global variable */	1095	static void
		1096	transfer_check (pTHX_ struct coro *prev, struct coro *next)
		1097	{
		1098	if (expect_true (prev != next))
		1099	{
		1100	if (expect_false (!(prev->flags & (CF_RUNNING | CF_NEW))))
		1101	croak ("Coro::State::transfer called with non-running/new prev Coro::State, but can only transfer from running or new states");
		1102
		1103	if (expect_false (next->flags & CF_RUNNING))
		1104	croak ("Coro::State::transfer called with running next Coro::State, but can only transfer to inactive states");
		1105
		1106	if (expect_false (next->flags & CF_DESTROYED))
		1107	croak ("Coro::State::transfer called with destroyed next Coro::State, but can only transfer to inactive states");
		1108
		1109	if (
		1110	#if PERL_VERSION_ATLEAST (5,9,0)
		1111	expect_false (PL_parser)
		1112	#else
		1113	expect_false (PL_lex_state != LEX_NOTPARSING)
		1114	#endif
		1115	)
		1116	croak ("Coro::State::transfer called while parsing, but this is not supported");
		1117	}
		1118	}
		1119
		1120	/* always use the TRANSFER macro */
789	static void NOINLINE	1121	static void NOINLINE
790	transfer (pTHX_ struct coro *prev, struct coro *next)	1122	transfer (pTHX_ struct coro *prev, struct coro *next)
791	{	1123	{
792	dSTACKLEVEL;	1124	dSTACKLEVEL;
		1125	static volatile int has_throw;
793		1126
794	/* sometimes transfer is only called to set idle_sp */	1127	/* sometimes transfer is only called to set idle_sp */
795	if (!next)	1128	if (expect_false (!next))
796	{	1129	{
797	((coro_cctx *)prev)->idle_sp = STACKLEVEL;	1130	((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 */	1131	assert (((coro_cctx *)prev)->idle_te = PL_top_env); /* just for the side-effect when asserts are enabled */
799	}	1132	}
800	else if (prev != next)	1133	else if (expect_true (prev != next))
801	{	1134	{
802	coro_cctx *prev__cctx;	1135	coro_cctx *prev__cctx;
803		1136
804	if (prev->flags & CF_NEW)	1137	if (expect_false (prev->flags & CF_NEW))
805	{	1138	{
806	/* create a new empty context */	1139	/* create a new empty context */
807	Newz (0, prev->cctx, 1, coro_cctx);	1140	Newz (0, prev->cctx, 1, coro_cctx);
808	prev->cctx->inuse = 1;
809	prev->flags &= ~CF_NEW;	1141	prev->flags &= ~CF_NEW;
810	prev->flags |= CF_RUNNING;	1142	prev->flags |= CF_RUNNING;
811	}	1143	}
812		1144
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;	1145	prev->flags &= ~CF_RUNNING;
824	next->flags |= CF_RUNNING;	1146	next->flags |= CF_RUNNING;
825		1147
826	LOCK;	1148	LOCK;
827		1149
		1150	/* first get rid of the old state */
		1151	save_perl (aTHX_ prev);
		1152
828	if (next->flags & CF_NEW)	1153	if (expect_false (next->flags & CF_NEW))
829	{	1154	{
830	/* need to start coroutine */	1155	/* need to start coroutine */
831	next->flags &= ~CF_NEW;	1156	next->flags &= ~CF_NEW;
832	/* first get rid of the old state */
833	save_perl (aTHX_ prev);
834	/* setup coroutine call */	1157	/* setup coroutine call */
835	setup_coro (aTHX_ next);	1158	coro_setup (aTHX_ next);
836	/* need a new stack */
837	assert (!next->cctx);
838	}	1159	}
839	else	1160	else
840	{
841	/* coroutine already started */
842	save_perl (aTHX_ prev);
843	load_perl (aTHX_ next);	1161	load_perl (aTHX_ next);
844	}
845		1162
846	prev__cctx = prev->cctx;	1163	prev__cctx = prev->cctx;
847		1164
848	/* possibly "free" the cctx */	1165	/* possibly "free" the cctx */
849	if (prev__cctx->idle_sp == STACKLEVEL)	1166	if (expect_true (prev__cctx->idle_sp == STACKLEVEL && !(prev__cctx->flags & CC_TRACE)))
850	{	1167	{
851	/* I assume that STACKLEVEL is a stronger indicator than PL_top_env changes */	1168	/* 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));	1169	assert (("ERROR: current top_env must equal previous top_env", PL_top_env == prev__cctx->idle_te));
853		1170
854	prev->cctx = 0;	1171	prev->cctx = 0;
855		1172
		1173	/* if the cctx is about to be destroyed we need to make sure we won't see it in cctx_get */
		1174	/* without this the next cctx_get might destroy the prev__cctx while still in use */
		1175	if (expect_false (CCTX_EXPIRED (prev__cctx)))
		1176	if (!next->cctx)
		1177	next->cctx = cctx_get (aTHX);
		1178
856	cctx_put (prev__cctx);	1179	cctx_put (prev__cctx);
857	prev__cctx->inuse = 0;
858	}	1180	}
859		1181
		1182	++next->usecount;
		1183
860	if (!next->cctx)	1184	if (expect_true (!next->cctx))
861	{
862	next->cctx = cctx_get (aTHX);	1185	next->cctx = cctx_get (aTHX);
863	assert (!next->cctx->inuse);
864	next->cctx->inuse = 1;
865	}
866		1186
		1187	has_throw = !!next->throw;
		1188
867	if (prev__cctx != next->cctx)	1189	if (expect_false (prev__cctx != next->cctx))
868	{	1190	{
869	prev__cctx->top_env = PL_top_env;	1191	prev__cctx->top_env = PL_top_env;
870	PL_top_env = next->cctx->top_env;	1192	PL_top_env = next->cctx->top_env;
871	coro_transfer (&prev__cctx->cctx, &next->cctx->cctx);	1193	coro_transfer (&prev__cctx->cctx, &next->cctx->cctx);
872	}	1194	}
873		1195
874	free_coro_mortal (aTHX);	1196	free_coro_mortal (aTHX);
875	UNLOCK;	1197	UNLOCK;
		1198
		1199	if (expect_false (has_throw))
		1200	{
		1201	struct coro *coro = SvSTATE (coro_current);
		1202
		1203	if (coro->throw)
		1204	{
		1205	SV *exception = coro->throw;
		1206	coro->throw = 0;
		1207	sv_setsv (ERRSV, exception);
		1208	croak (0);
		1209	}
		1210	}
876	}	1211	}
877	}	1212	}
878		1213
879	struct transfer_args	1214	struct transfer_args
880	{	1215	{
881	struct coro *prev, *next;	1216	struct coro *prev, *next;
882	};	1217	};
883		1218
884	#define TRANSFER(ta) transfer (aTHX_ (ta).prev, (ta).next)	1219	#define TRANSFER(ta) transfer (aTHX_ (ta).prev, (ta).next)
		1220	#define TRANSFER_CHECK(ta) transfer_check (aTHX_ (ta).prev, (ta).next)
885		1221
886	/** high level stuff ********************************************************/	1222	/** high level stuff ********************************************************/
887		1223
888	static int	1224	static int
889	coro_state_destroy (pTHX_ struct coro *coro)	1225	coro_state_destroy (pTHX_ struct coro *coro)
…		…
906		1242
907	if (coro->mainstack && coro->mainstack != main_mainstack)	1243	if (coro->mainstack && coro->mainstack != main_mainstack)
908	{	1244	{
909	struct coro temp;	1245	struct coro temp;
910		1246
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)	1247	if (coro->flags & CF_RUNNING)
917	croak ("FATAL: tried to destroy currently running coroutine");	1248	croak ("FATAL: tried to destroy currently running coroutine");
918		1249
919	save_perl (aTHX_ &temp);	1250	save_perl (aTHX_ &temp);
920	load_perl (aTHX_ coro);	1251	load_perl (aTHX_ coro);
921		1252
922	coro_destroy_stacks (aTHX);	1253	coro_destroy (aTHX_ coro);
923		1254
924	load_perl (aTHX_ &temp); /* this will get rid of defsv etc.. */	1255	load_perl (aTHX_ &temp);
925		1256
926	coro->mainstack = 0;	1257	coro->slot = 0;
927	}	1258	}
928		1259
929	cctx_destroy (coro->cctx);	1260	cctx_destroy (coro->cctx);
930	SvREFCNT_dec (coro->args);	1261	SvREFCNT_dec (coro->args);
931		1262
…		…
972	#else	1303	#else
973	# define MGf_DUP 0	1304	# define MGf_DUP 0
974	#endif	1305	#endif
975	};	1306	};
976		1307
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	1308	static void
1001	prepare_transfer (pTHX_ struct transfer_args *ta, SV *prev_sv, SV *next_sv)	1309	prepare_transfer (pTHX_ struct transfer_args *ta, SV *prev_sv, SV *next_sv)
1002	{	1310	{
1003	ta->prev = SvSTATE (prev_sv);	1311	ta->prev = SvSTATE (prev_sv);
1004	ta->next = SvSTATE (next_sv);	1312	ta->next = SvSTATE (next_sv);
		1313	TRANSFER_CHECK (*ta);
1005	}	1314	}
1006		1315
1007	static void	1316	static void
1008	api_transfer (SV *prev_sv, SV *next_sv)	1317	api_transfer (SV *prev_sv, SV *next_sv)
1009	{	1318	{
1010	dTHX;	1319	dTHX;
1011	struct transfer_args ta;	1320	struct transfer_args ta;
1012		1321
1013	prepare_transfer (aTHX_ &ta, prev_sv, next_sv);	1322	prepare_transfer (aTHX_ &ta, prev_sv, next_sv);
1014	TRANSFER (ta);	1323	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	}	1324	}
1029		1325
1030	/** Coro ********************************************************************/	1326	/** Coro ********************************************************************/
1031		1327
1032	static void	1328	static void
…		…
1091	{	1387	{
1092	LOCK;	1388	LOCK;
1093	next_sv = coro_deq (aTHX_ PRIO_MIN);	1389	next_sv = coro_deq (aTHX_ PRIO_MIN);
1094		1390
1095	/* nothing to schedule: call the idle handler */	1391	/* nothing to schedule: call the idle handler */
1096	if (!next_sv)	1392	if (expect_false (!next_sv))
1097	{	1393	{
1098	dSP;	1394	dSP;
1099	UNLOCK;	1395	UNLOCK;
1100		1396
1101	ENTER;	1397	ENTER;
…		…
1111	}	1407	}
1112		1408
1113	ta->next = SvSTATE (next_sv);	1409	ta->next = SvSTATE (next_sv);
1114		1410
1115	/* cannot transfer to destroyed coros, skip and look for next */	1411	/* cannot transfer to destroyed coros, skip and look for next */
1116	if (ta->next->flags & CF_DESTROYED)	1412	if (expect_false (ta->next->flags & CF_DESTROYED))
1117	{	1413	{
1118	UNLOCK;	1414	UNLOCK;
1119	SvREFCNT_dec (next_sv);	1415	SvREFCNT_dec (next_sv);
1120	/* coro_nready is already taken care of by destroy */	1416	/* coro_nready is already taken care of by destroy */
1121	continue;	1417	continue;
…		…
1126	break;	1422	break;
1127	}	1423	}
1128		1424
1129	/* free this only after the transfer */	1425	/* free this only after the transfer */
1130	prev_sv = SvRV (coro_current);	1426	prev_sv = SvRV (coro_current);
1131	SvRV_set (coro_current, next_sv);
1132	ta->prev = SvSTATE (prev_sv);	1427	ta->prev = SvSTATE (prev_sv);
1133		1428	TRANSFER_CHECK (*ta);
1134	assert (ta->next->flags & CF_READY);	1429	assert (ta->next->flags & CF_READY);
1135	ta->next->flags &= ~CF_READY;	1430	ta->next->flags &= ~CF_READY;
		1431	SvRV_set (coro_current, next_sv);
1136		1432
1137	LOCK;	1433	LOCK;
1138	free_coro_mortal (aTHX);	1434	free_coro_mortal (aTHX);
1139	coro_mortal = prev_sv;	1435	coro_mortal = prev_sv;
1140	UNLOCK;	1436	UNLOCK;
…		…
1177	dTHX;	1473	dTHX;
1178	struct transfer_args ta;	1474	struct transfer_args ta;
1179		1475
1180	prepare_cede (aTHX_ &ta);	1476	prepare_cede (aTHX_ &ta);
1181		1477
1182	if (ta.prev != ta.next)	1478	if (expect_true (ta.prev != ta.next))
1183	{	1479	{
1184	TRANSFER (ta);	1480	TRANSFER (ta);
1185	return 1;	1481	return 1;
1186	}	1482	}
1187	else	1483	else
…		…
1201	}	1497	}
1202	else	1498	else
1203	return 0;	1499	return 0;
1204	}	1500	}
1205		1501
		1502	static void
		1503	api_trace (SV *coro_sv, int flags)
		1504	{
		1505	dTHX;
		1506	struct coro *coro = SvSTATE (coro_sv);
		1507
		1508	if (flags & CC_TRACE)
		1509	{
		1510	if (!coro->cctx)
		1511	coro->cctx = cctx_new ();
		1512	else if (!(coro->cctx->flags & CC_TRACE))
		1513	croak ("cannot enable tracing on coroutine with custom stack");
		1514
		1515	coro->cctx->flags |= CC_NOREUSE | (flags & (CC_TRACE | CC_TRACE_ALL));
		1516	}
		1517	else if (coro->cctx && coro->cctx->flags & CC_TRACE)
		1518	{
		1519	coro->cctx->flags &= ~(CC_TRACE | CC_TRACE_ALL);
		1520
		1521	if (coro->flags & CF_RUNNING)
		1522	PL_runops = RUNOPS_DEFAULT;
		1523	else
		1524	coro->slot->runops = RUNOPS_DEFAULT;
		1525	}
		1526	}
		1527
1206	MODULE = Coro::State PACKAGE = Coro::State	1528	MODULE = Coro::State PACKAGE = Coro::State PREFIX = api_
1207		1529
1208	PROTOTYPES: DISABLE	1530	PROTOTYPES: DISABLE
1209		1531
1210	BOOT:	1532	BOOT:
1211	{	1533	{
1212	#ifdef USE_ITHREADS	1534	#ifdef USE_ITHREADS
1213	MUTEX_INIT (&coro_mutex);	1535	MUTEX_INIT (&coro_mutex);
1214	#endif	1536	#endif
1215	BOOT_PAGESIZE;	1537	BOOT_PAGESIZE;
1216		1538
		1539	irsgv = gv_fetchpv ("/" , GV_ADD|GV_NOTQUAL, SVt_PV);
		1540	stdoutgv = gv_fetchpv ("STDOUT", GV_ADD|GV_NOTQUAL, SVt_PVIO);
		1541	#if 0
		1542	orig_sigelem_get = PL_vtbl_sigelem.svt_get;
		1543	PL_vtbl_sigelem.svt_get = coro_sigelem_get;
		1544	#endif
		1545	hv_sig = coro_get_hv (aTHX_ "SIG", TRUE);
		1546	rv_diehook = SvREFCNT_inc ((SV *)gv_fetchpv ("Coro::State::diehook" , 0, SVt_PVCV));
		1547	rv_warnhook = SvREFCNT_inc ((SV *)gv_fetchpv ("Coro::State::warnhook", 0, SVt_PVCV));
		1548
1217	coro_state_stash = gv_stashpv ("Coro::State", TRUE);	1549	coro_state_stash = gv_stashpv ("Coro::State", TRUE);
1218		1550
1219	newCONSTSUB (coro_state_stash, "SAVE_DEFAV", newSViv (CORO_SAVE_DEFAV));	1551	newCONSTSUB (coro_state_stash, "CC_TRACE" , newSViv (CC_TRACE));
1220	newCONSTSUB (coro_state_stash, "SAVE_DEFSV", newSViv (CORO_SAVE_DEFSV));	1552	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));	1553	newCONSTSUB (coro_state_stash, "CC_TRACE_LINE", newSViv (CC_TRACE_LINE));
1225	newCONSTSUB (coro_state_stash, "SAVE_ALL", newSViv (CORO_SAVE_ALL));	1554	newCONSTSUB (coro_state_stash, "CC_TRACE_ALL" , newSViv (CC_TRACE_ALL));
1226		1555
1227	main_mainstack = PL_mainstack;	1556	main_mainstack = PL_mainstack;
1228	main_top_env = PL_top_env;	1557	main_top_env = PL_top_env;
1229		1558
1230	while (main_top_env->je_prev)	1559	while (main_top_env->je_prev)
1231	main_top_env = main_top_env->je_prev;	1560	main_top_env = main_top_env->je_prev;
1232		1561
1233	coroapi.ver = CORO_API_VERSION;	1562	coroapi.ver = CORO_API_VERSION;
		1563	coroapi.rev = CORO_API_REVISION;
1234	coroapi.transfer = api_transfer;	1564	coroapi.transfer = api_transfer;
1235		1565
1236	assert (("PRIO_NORMAL must be 0", !PRIO_NORMAL));	1566	assert (("PRIO_NORMAL must be 0", !PRIO_NORMAL));
1237	}	1567	}
1238		1568
1239	SV *	1569	SV *
1240	new (char *klass, ...)	1570	new (char *klass, ...)
1241	CODE:	1571	CODE:
1242	{	1572	{
1243	struct coro *coro;	1573	struct coro *coro;
		1574	MAGIC *mg;
1244	HV *hv;	1575	HV *hv;
1245	int i;	1576	int i;
1246		1577
1247	Newz (0, coro, 1, struct coro);	1578	Newz (0, coro, 1, struct coro);
1248	coro->args = newAV ();	1579	coro->args = newAV ();
1249	coro->save = CORO_SAVE_DEF;
1250	coro->flags = CF_NEW;	1580	coro->flags = CF_NEW;
1251		1581
1252	if (coro_first) coro_first->prev = coro;	1582	if (coro_first) coro_first->prev = coro;
1253	coro->next = coro_first;	1583	coro->next = coro_first;
1254	coro_first = coro;	1584	coro_first = coro;
1255		1585
1256	coro->hv = hv = newHV ();	1586	coro->hv = hv = newHV ();
1257	sv_magicext ((SV *)hv, 0, PERL_MAGIC_ext, &coro_state_vtbl, (char *)coro, 0)->mg_flags |= MGf_DUP;	1587	mg = sv_magicext ((SV *)hv, 0, CORO_MAGIC_type_state, &coro_state_vtbl, (char *)coro, 0);
		1588	mg->mg_flags |= MGf_DUP;
1258	RETVAL = sv_bless (newRV_noinc ((SV *)hv), gv_stashpv (klass, 1));	1589	RETVAL = sv_bless (newRV_noinc ((SV *)hv), gv_stashpv (klass, 1));
1259		1590
		1591	av_extend (coro->args, items - 1);
1260	for (i = 1; i < items; i++)	1592	for (i = 1; i < items; i++)
1261	av_push (coro->args, newSVsv (ST (i)));	1593	av_push (coro->args, newSVsv (ST (i)));
1262	}	1594	}
1263	OUTPUT:	1595	OUTPUT:
1264	RETVAL	1596	RETVAL
1265		1597
1266	int	1598	# these not obviously related functions are all rolled into the same xs
1267	save (SV *coro, int new_save = -1)	1599	# function to increase chances that they all will call transfer with the same
1268	CODE:	1600	# 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	1601	void
1285	_set_stacklevel (...)	1602	_set_stacklevel (...)
1286	ALIAS:	1603	ALIAS:
1287	Coro::State::transfer = 1	1604	Coro::State::transfer = 1
1288	Coro::schedule = 2	1605	Coro::schedule = 2
…		…
1320		1637
1321	break;	1638	break;
1322	}	1639	}
1323		1640
1324	BARRIER;	1641	BARRIER;
		1642	PUTBACK;
1325	TRANSFER (ta);	1643	TRANSFER (ta);
1326		1644	SPAGAIN; /* might be the sp of a different coroutine now */
1327	if (GIMME_V != G_VOID && ta.next != ta.prev)	1645	/* be extra careful not to ever do anything after TRANSFER */
1328	XSRETURN_YES;
1329	}	1646	}
1330		1647
1331	bool	1648	bool
1332	_destroy (SV *coro_sv)	1649	_destroy (SV *coro_sv)
1333	CODE:	1650	CODE:
…		…
1374	if (coro->hv)	1691	if (coro->hv)
1375	XPUSHs (sv_2mortal (newRV_inc ((SV *)coro->hv)));	1692	XPUSHs (sv_2mortal (newRV_inc ((SV *)coro->hv)));
1376	}	1693	}
1377		1694
1378	void	1695	void
1379	_eval (Coro::State coro, SV *coderef)	1696	call (Coro::State coro, SV *coderef)
		1697	ALIAS:
		1698	eval = 1
1380	CODE:	1699	CODE:
1381	{	1700	{
1382	if (coro->mainstack)	1701	if (coro->mainstack)
1383	{	1702	{
1384	struct coro temp;	1703	struct coro temp;
1385	Zero (&temp, 1, struct coro);
1386	temp.save = CORO_SAVE_ALL;
1387		1704
1388	if (!(coro->flags & CF_RUNNING))	1705	if (!(coro->flags & CF_RUNNING))
1389	{	1706	{
1390	save_perl (aTHX_ &temp);	1707	save_perl (aTHX_ &temp);
1391	load_perl (aTHX_ coro);	1708	load_perl (aTHX_ coro);
…		…
1393		1710
1394	{	1711	{
1395	dSP;	1712	dSP;
1396	ENTER;	1713	ENTER;
1397	SAVETMPS;	1714	SAVETMPS;
		1715	PUTBACK;
		1716	PUSHSTACK;
1398	PUSHMARK (SP);	1717	PUSHMARK (SP);
1399	PUTBACK;	1718
		1719	if (ix)
		1720	eval_sv (coderef, 0);
		1721	else
1400	call_sv (coderef, G_KEEPERR | G_EVAL | G_VOID | G_DISCARD);	1722	call_sv (coderef, G_KEEPERR | G_EVAL | G_VOID | G_DISCARD);
		1723
		1724	POPSTACK;
1401	SPAGAIN;	1725	SPAGAIN;
1402	FREETMPS;	1726	FREETMPS;
1403	LEAVE;	1727	LEAVE;
1404	PUTBACK;	1728	PUTBACK;
1405	}	1729	}
…		…
1409	save_perl (aTHX_ coro);	1733	save_perl (aTHX_ coro);
1410	load_perl (aTHX_ &temp);	1734	load_perl (aTHX_ &temp);
1411	}	1735	}
1412	}	1736	}
1413	}	1737	}
1414		1738
1415	SV *	1739	SV *
1416	is_ready (Coro::State coro)	1740	is_ready (Coro::State coro)
1417	PROTOTYPE: $	1741	PROTOTYPE: $
1418	ALIAS:	1742	ALIAS:
1419	is_ready = CF_READY	1743	is_ready = CF_READY
…		…
1423	CODE:	1747	CODE:
1424	RETVAL = boolSV (coro->flags & ix);	1748	RETVAL = boolSV (coro->flags & ix);
1425	OUTPUT:	1749	OUTPUT:
1426	RETVAL	1750	RETVAL
1427		1751
		1752	void
		1753	api_trace (SV *coro, int flags = CC_TRACE | CC_TRACE_SUB)
		1754
		1755	SV *
		1756	has_stack (Coro::State coro)
		1757	PROTOTYPE: $
		1758	CODE:
		1759	RETVAL = boolSV (!!coro->cctx);
		1760	OUTPUT:
		1761	RETVAL
		1762
		1763	int
		1764	is_traced (Coro::State coro)
		1765	PROTOTYPE: $
		1766	CODE:
		1767	RETVAL = (coro->cctx ? coro->cctx->flags : 0) & CC_TRACE_ALL;
		1768	OUTPUT:
		1769	RETVAL
		1770
1428	IV	1771	IV
1429	rss (Coro::State coro)	1772	rss (Coro::State coro)
1430	PROTOTYPE: $	1773	PROTOTYPE: $
		1774	ALIAS:
		1775	usecount = 1
1431	CODE:	1776	CODE:
1432	RETVAL = coro_rss (coro);	1777	switch (ix)
		1778	{
		1779	case 0: RETVAL = coro_rss (aTHX_ coro); break;
		1780	case 1: RETVAL = coro->usecount; break;
		1781	}
1433	OUTPUT:	1782	OUTPUT:
1434	RETVAL	1783	RETVAL
1435		1784
1436		1785
1437	MODULE = Coro::State PACKAGE = Coro	1786	MODULE = Coro::State PACKAGE = Coro
1438		1787
1439	BOOT:	1788	BOOT:
1440	{	1789	{
1441	int i;	1790	int i;
1442		1791
		1792	sv_pool_rss = coro_get_sv (aTHX_ "Coro::POOL_RSS" , TRUE);
		1793	sv_pool_size = coro_get_sv (aTHX_ "Coro::POOL_SIZE" , TRUE);
		1794	av_async_pool = coro_get_av (aTHX_ "Coro::async_pool", TRUE);
		1795
		1796	coro_current = coro_get_sv (aTHX_ "Coro::current", FALSE);
		1797	SvREADONLY_on (coro_current);
		1798
1443	coro_stash = gv_stashpv ("Coro", TRUE);	1799	coro_stash = gv_stashpv ("Coro", TRUE);
1444		1800
1445	newCONSTSUB (coro_stash, "PRIO_MAX", newSViv (PRIO_MAX));	1801	newCONSTSUB (coro_stash, "PRIO_MAX", newSViv (PRIO_MAX));
1446	newCONSTSUB (coro_stash, "PRIO_HIGH", newSViv (PRIO_HIGH));	1802	newCONSTSUB (coro_stash, "PRIO_HIGH", newSViv (PRIO_HIGH));
1447	newCONSTSUB (coro_stash, "PRIO_NORMAL", newSViv (PRIO_NORMAL));	1803	newCONSTSUB (coro_stash, "PRIO_NORMAL", newSViv (PRIO_NORMAL));
1448	newCONSTSUB (coro_stash, "PRIO_LOW", newSViv (PRIO_LOW));	1804	newCONSTSUB (coro_stash, "PRIO_LOW", newSViv (PRIO_LOW));
1449	newCONSTSUB (coro_stash, "PRIO_IDLE", newSViv (PRIO_IDLE));	1805	newCONSTSUB (coro_stash, "PRIO_IDLE", newSViv (PRIO_IDLE));
1450	newCONSTSUB (coro_stash, "PRIO_MIN", newSViv (PRIO_MIN));	1806	newCONSTSUB (coro_stash, "PRIO_MIN", newSViv (PRIO_MIN));
1451		1807
1452	coro_current = get_sv ("Coro::current", FALSE);
1453	SvREADONLY_on (coro_current);
1454
1455	for (i = PRIO_MAX - PRIO_MIN + 1; i--; )	1808	for (i = PRIO_MAX - PRIO_MIN + 1; i--; )
1456	coro_ready[i] = newAV ();	1809	coro_ready[i] = newAV ();
1457		1810
1458	{	1811	{
1459	SV *sv = perl_get_sv("Coro::API", 1);	1812	SV *sv = perl_get_sv ("Coro::API", TRUE);
		1813	perl_get_sv ("Coro::API", TRUE); /* silence 5.10 warning */
1460		1814
1461	coroapi.schedule = api_schedule;	1815	coroapi.schedule = api_schedule;
1462	coroapi.save = api_save;
1463	coroapi.cede = api_cede;	1816	coroapi.cede = api_cede;
1464	coroapi.cede_notself = api_cede_notself;	1817	coroapi.cede_notself = api_cede_notself;
1465	coroapi.ready = api_ready;	1818	coroapi.ready = api_ready;
1466	coroapi.is_ready = api_is_ready;	1819	coroapi.is_ready = api_is_ready;
1467	coroapi.nready = &coro_nready;	1820	coroapi.nready = &coro_nready;
…		…
1516	CODE:	1869	CODE:
1517	RETVAL = coro_nready;	1870	RETVAL = coro_nready;
1518	OUTPUT:	1871	OUTPUT:
1519	RETVAL	1872	RETVAL
1520		1873
		1874	void
		1875	throw (Coro::State self, SV *throw = &PL_sv_undef)
		1876	PROTOTYPE: $;$
		1877	CODE:
		1878	SvREFCNT_dec (self->throw);
		1879	self->throw = SvOK (throw) ? newSVsv (throw) : 0;
		1880
		1881	# for async_pool speedup
		1882	void
		1883	_pool_1 (SV *cb)
		1884	CODE:
		1885	{
		1886	struct coro *coro = SvSTATE (coro_current);
		1887	HV *hv = (HV *)SvRV (coro_current);
		1888	AV *defav = GvAV (PL_defgv);
		1889	SV *invoke = hv_delete (hv, "_invoke", sizeof ("_invoke") - 1, 0);
		1890	AV *invoke_av;
		1891	int i, len;
		1892
		1893	if (!invoke)
		1894	croak ("\3async_pool terminate\2\n");
		1895
		1896	SvREFCNT_dec (coro->saved_deffh);
		1897	coro->saved_deffh = SvREFCNT_inc ((SV *)PL_defoutgv);
		1898
		1899	hv_store (hv, "desc", sizeof ("desc") - 1,
		1900	newSVpvn ("[async_pool]", sizeof ("[async_pool]") - 1), 0);
		1901
		1902	invoke_av = (AV *)SvRV (invoke);
		1903	len = av_len (invoke_av);
		1904
		1905	sv_setsv (cb, AvARRAY (invoke_av)[0]);
		1906
		1907	if (len > 0)
		1908	{
		1909	av_fill (defav, len - 1);
		1910	for (i = 0; i < len; ++i)
		1911	av_store (defav, i, SvREFCNT_inc (AvARRAY (invoke_av)[i + 1]));
		1912	}
		1913
		1914	SvREFCNT_dec (invoke);
		1915	}
		1916
		1917	void
		1918	_pool_2 (SV *cb)
		1919	CODE:
		1920	{
		1921	struct coro *coro = SvSTATE (coro_current);
		1922
		1923	sv_setsv (cb, &PL_sv_undef);
		1924
		1925	SvREFCNT_dec ((SV *)PL_defoutgv); PL_defoutgv = (GV *)coro->saved_deffh;
		1926	coro->saved_deffh = 0;
		1927
		1928	if (coro_rss (aTHX_ coro) > SvIV (sv_pool_rss)
		1929	|| av_len (av_async_pool) + 1 >= SvIV (sv_pool_size))
		1930	croak ("\3async_pool terminate\2\n");
		1931
		1932	av_clear (GvAV (PL_defgv));
		1933	hv_store ((HV *)SvRV (coro_current), "desc", sizeof ("desc") - 1,
		1934	newSVpvn ("[async_pool idle]", sizeof ("[async_pool idle]") - 1), 0);
		1935
		1936	coro->prio = 0;
		1937
		1938	if (coro->cctx && (coro->cctx->flags & CC_TRACE))
		1939	api_trace (coro_current, 0);
		1940
		1941	av_push (av_async_pool, newSVsv (coro_current));
		1942	}
		1943
		1944
1521	MODULE = Coro::State PACKAGE = Coro::AIO	1945	MODULE = Coro::State PACKAGE = Coro::AIO
1522		1946
1523	SV *	1947	SV *
1524	_get_state ()	1948	_get_state ()
1525	CODE:	1949	CODE:

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