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

Comparing Coro/Coro/State.xs (file contents):
Revision 1.193 by root, Fri Oct 5 23:38:40 2007 UTC vs.
Revision 1.230 by root, Mon Apr 14 11:28:59 2008 UTC

…		…
1	#include "libcoro/coro.c"	1	#include "libcoro/coro.c"
2		2
3	#define PERL_NO_GET_CONTEXT	3	#define PERL_NO_GET_CONTEXT
		4	#define PERL_EXT
4		5
5	#include "EXTERN.h"	6	#include "EXTERN.h"
6	#include "perl.h"	7	#include "perl.h"
7	#include "XSUB.h"	8	#include "XSUB.h"
8		9
9	#include "patchlevel.h"	10	#include "patchlevel.h"
10		11
11	#include <stdio.h>	12	#include <stdio.h>
12	#include <errno.h>	13	#include <errno.h>
13	#include <assert.h>	14	#include <assert.h>
		15	#include <inttypes.h> /* portable stdint.h */
14		16
15	#ifdef HAVE_MMAP	17	#ifdef HAVE_MMAP
16	# include <unistd.h>	18	# include <unistd.h>
17	# include <sys/mman.h>	19	# include <sys/mman.h>
18	# ifndef MAP_ANONYMOUS	20	# ifndef MAP_ANONYMOUS
70	# ifndef IS_PADCONST	72	# ifndef IS_PADCONST
71	# define IS_PADCONST(v) 0	73	# define IS_PADCONST(v) 0
72	# endif	74	# endif
73	#endif	75	#endif
74		76
		77	/* 5.8.8 */
		78	#ifndef GV_NOTQUAL
		79	# define GV_NOTQUAL 0
		80	#endif
		81	#ifndef newSV
		82	# define newSV(l) NEWSV(0,l)
		83	#endif
		84
		85	/* 5.11 */
		86	#ifndef CxHASARGS
		87	# define CxHASARGS(cx) (cx)->blk_sub.hasargs
		88	#endif
		89
75	/* 5.8.7 */	90	/* 5.8.7 */
76	#ifndef SvRV_set	91	#ifndef SvRV_set
77	# define SvRV_set(s,v) SvRV(s) = (v)	92	# define SvRV_set(s,v) SvRV(s) = (v)
78	#endif
79
80	/* 5.8.8 */
81	#ifndef GV_NOTQUAL
82	# define GV_NOTQUAL 0
83	#endif
84	#ifndef newSV
85	# define newSV(l) NEWSV(0,l)
86	#endif	93	#endif
87		94
88	#if !__i386 && !__x86_64 && !__powerpc && !__m68k && !__alpha && !__mips && !__sparc64	95	#if !__i386 && !__x86_64 && !__powerpc && !__m68k && !__alpha && !__mips && !__sparc64
89	# undef CORO_STACKGUARD	96	# undef CORO_STACKGUARD
90	#endif	97	#endif
…		…
106	#define IN_DESTRUCT (PL_main_cv == Nullcv)	113	#define IN_DESTRUCT (PL_main_cv == Nullcv)
107		114
108	#if __GNUC__ >= 3	115	#if __GNUC__ >= 3
109	# define attribute(x) __attribute__(x)	116	# define attribute(x) __attribute__(x)
110	# define BARRIER __asm__ __volatile__ ("" : : : "memory")	117	# define BARRIER __asm__ __volatile__ ("" : : : "memory")
		118	# define expect(expr,value) __builtin_expect ((expr),(value))
111	#else	119	#else
112	# define attribute(x)	120	# define attribute(x)
113	# define BARRIER	121	# define BARRIER
		122	# define expect(expr,value) (expr)
114	#endif	123	#endif
		124
		125	#define expect_false(expr) expect ((expr) != 0, 0)
		126	#define expect_true(expr) expect ((expr) != 0, 1)
115		127
116	#define NOINLINE attribute ((noinline))	128	#define NOINLINE attribute ((noinline))
117		129
118	#include "CoroAPI.h"	130	#include "CoroAPI.h"
119		131
…		…
138	static size_t coro_stacksize = CORO_STACKSIZE;	150	static size_t coro_stacksize = CORO_STACKSIZE;
139	static struct CoroAPI coroapi;	151	static struct CoroAPI coroapi;
140	static AV main_mainstack; / used to differentiate between $main and others */	152	static AV main_mainstack; / used to differentiate between $main and others */
141	static JMPENV *main_top_env;	153	static JMPENV *main_top_env;
142	static HV coro_state_stash, coro_stash;	154	static HV coro_state_stash, coro_stash;
143	static SV coro_mortal; / will be freed after next transfer */	155	static volatile SV coro_mortal; / will be freed after next transfer */
144		156
145	static GV irsgv; / $/ */	157	static GV irsgv; / $/ */
146	static GV stdoutgv; / STDOUT /	158	static GV stdoutgv; / STDOUT /
		159	static SV *rv_diehook;
		160	static SV *rv_warnhook;
		161	static HV hv_sig; / %SIG */
147		162
148	/* async_pool helper stuff */	163	/* async_pool helper stuff */
149	static SV *sv_pool_rss;	164	static SV *sv_pool_rss;
150	static SV *sv_pool_size;	165	static SV *sv_pool_size;
151	static AV *av_async_pool;	166	static AV *av_async_pool;
…		…
187	CF_READY = 0x0002, /* coroutine is ready */	202	CF_READY = 0x0002, /* coroutine is ready */
188	CF_NEW = 0x0004, /* has never been switched to */	203	CF_NEW = 0x0004, /* has never been switched to */
189	CF_DESTROYED = 0x0008, /* coroutine data has been freed */	204	CF_DESTROYED = 0x0008, /* coroutine data has been freed */
190	};	205	};
191		206
		207	/* the structure where most of the perl state is stored, overlaid on the cxstack */
		208	typedef struct {
		209	SV *defsv;
		210	AV *defav;
		211	SV *errsv;
		212	SV *irsgv;
		213	#define VAR(name,type) type name;
		214	# include "state.h"
		215	#undef VAR
		216	} perl_slots;
		217
		218	#define SLOT_COUNT ((sizeof (perl_slots) + sizeof (PERL_CONTEXT) - 1) / sizeof (PERL_CONTEXT))
		219
192	/* this is a structure representing a perl-level coroutine */	220	/* this is a structure representing a perl-level coroutine */
193	struct coro {	221	struct coro {
194	/* the c coroutine allocated to this perl coroutine, if any */	222	/* the c coroutine allocated to this perl coroutine, if any */
195	coro_cctx *cctx;	223	coro_cctx *cctx;
196		224
		225	/* process data */
		226	AV *mainstack;
		227	perl_slots slot; / basically the saved sp */
		228
197	/* data associated with this coroutine (initial args) */	229	AV args; / data associated with this coroutine (initial args) */
198	AV *args;	230	int refcnt; /* coroutines are refcounted, yes */
199	int refcnt;
200	int flags; /* CF_ flags */	231	int flags; /* CF_ flags */
201		232	HV hv; / the perl hash associated with this coro, if any */
202	/* optionally saved, might be zero */
203	AV defav; / @_ */
204	SV defsv; / $_ */
205	SV errsv; / $@ */
206	SV deffh; / default filehandle */
207	SV irssv; / $/ */
208	SV irssv_sv; / real $/ cache */
209
210	#define VAR(name,type) type name;
211	# include "state.h"
212	#undef VAR
213		233
214	/* statistics */	234	/* statistics */
215	int usecount; /* number of transfers to this coro */	235	int usecount; /* number of transfers to this coro */
216		236
217	/* coro process data */	237	/* coro process data */
218	int prio;	238	int prio;
219	//SV *throw;	239	SV throw; / exception to be thrown */
220		240
221	/* async_pool */	241	/* async_pool */
222	SV *saved_deffh;	242	SV *saved_deffh;
223		243
224	/* linked list */	244	/* linked list */
225	struct coro next, prev;	245	struct coro next, prev;
226	HV hv; / the perl hash associated with this coro, if any */
227	};	246	};
228		247
229	typedef struct coro *Coro__State;	248	typedef struct coro *Coro__State;
230	typedef struct coro *Coro__State_or_hashref;	249	typedef struct coro *Coro__State_or_hashref;
231		250
…		…
244	static int coro_nready;	263	static int coro_nready;
245	static struct coro *coro_first;	264	static struct coro *coro_first;
246		265
247	/ lowlevel stuff ********************************************************/	266	/ lowlevel stuff ********************************************************/
248		267
		268	static SV *
		269	coro_get_sv (pTHX_ const char *name, int create)
		270	{
		271	#if PERL_VERSION_ATLEAST (5,10,0)
		272	/* silence stupid and wrong 5.10 warning that I am unable to switch off */
		273	get_sv (name, create);
		274	#endif
		275	return get_sv (name, create);
		276	}
		277
		278	static AV *
		279	coro_get_av (pTHX_ const char *name, int create)
		280	{
		281	#if PERL_VERSION_ATLEAST (5,10,0)
		282	/* silence stupid and wrong 5.10 warning that I am unable to switch off */
		283	get_av (name, create);
		284	#endif
		285	return get_av (name, create);
		286	}
		287
		288	static HV *
		289	coro_get_hv (pTHX_ const char *name, int create)
		290	{
		291	#if PERL_VERSION_ATLEAST (5,10,0)
		292	/* silence stupid and wrong 5.10 warning that I am unable to switch off */
		293	get_hv (name, create);
		294	#endif
		295	return get_hv (name, create);
		296	}
		297
249	static AV *	298	static AV *
250	coro_clone_padlist (pTHX_ CV *cv)	299	coro_clone_padlist (pTHX_ CV *cv)
251	{	300	{
252	AV *padlist = CvPADLIST (cv);	301	AV *padlist = CvPADLIST (cv);
253	AV newpadlist, newpad;	302	AV newpadlist, newpad;
254		303
255	newpadlist = newAV ();	304	newpadlist = newAV ();
256	AvREAL_off (newpadlist);	305	AvREAL_off (newpadlist);
257	#if PERL_VERSION_ATLEAST (5,9,0)	306	#if PERL_VERSION_ATLEAST (5,10,0)
258	Perl_pad_push (aTHX_ padlist, AvFILLp (padlist) + 1);	307	Perl_pad_push (aTHX_ padlist, AvFILLp (padlist) + 1);
259	#else	308	#else
260	Perl_pad_push (aTHX_ padlist, AvFILLp (padlist) + 1, 1);	309	Perl_pad_push (aTHX_ padlist, AvFILLp (padlist) + 1, 1);
261	#endif	310	#endif
262	newpad = (AV *)AvARRAY (padlist)[AvFILLp (padlist)];	311	newpad = (AV *)AvARRAY (padlist)[AvFILLp (padlist)];
…		…
300		349
301	/* casting is fun. */	350	/* casting is fun. */
302	while (&PL_sv_undef != (SV )(padlist = (AV )av_pop (av)))	351	while (&PL_sv_undef != (SV )(padlist = (AV )av_pop (av)))
303	free_padlist (aTHX_ padlist);	352	free_padlist (aTHX_ padlist);
304		353
305	SvREFCNT_dec (av);
306
307	return 0;	354	return 0;
308	}	355	}
309		356
310	#define PERL_MAGIC_coro PERL_MAGIC_ext	357	#define CORO_MAGIC_type_cv PERL_MAGIC_ext
		358	#define CORO_MAGIC_type_state PERL_MAGIC_ext
311		359
312	static MGVTBL vtbl_coro = {0, 0, 0, 0, coro_cv_free};	360	static MGVTBL coro_cv_vtbl = {
		361	0, 0, 0, 0,
		362	coro_cv_free
		363	};
313		364
314	#define CORO_MAGIC(cv) \	365	#define CORO_MAGIC(sv,type) \
315	SvMAGIC (cv) \	366	SvMAGIC (sv) \
316	? SvMAGIC (cv)->mg_type == PERL_MAGIC_coro \	367	? SvMAGIC (sv)->mg_type == type \
317	? SvMAGIC (cv) \	368	? SvMAGIC (sv) \
318	: mg_find ((SV *)cv, PERL_MAGIC_coro) \	369	: mg_find (sv, type) \
319	: 0	370	: 0
		371
		372	#define CORO_MAGIC_cv(cv) CORO_MAGIC (((SV *)(cv)), CORO_MAGIC_type_cv)
		373	#define CORO_MAGIC_state(sv) CORO_MAGIC (((SV *)(sv)), CORO_MAGIC_type_state)
320		374
321	static struct coro *	375	static struct coro *
322	SvSTATE_ (pTHX_ SV *coro)	376	SvSTATE_ (pTHX_ SV *coro)
323	{	377	{
324	HV *stash;	378	HV *stash;
325	MAGIC *mg;	379	MAGIC *mg;
326		380
327	if (SvROK (coro))	381	if (SvROK (coro))
328	coro = SvRV (coro);	382	coro = SvRV (coro);
329		383
330	if (SvTYPE (coro) != SVt_PVHV)	384	if (expect_false (SvTYPE (coro) != SVt_PVHV))
331	croak ("Coro::State object required");	385	croak ("Coro::State object required");
332		386
333	stash = SvSTASH (coro);	387	stash = SvSTASH (coro);
334	if (stash != coro_stash && stash != coro_state_stash)	388	if (expect_false (stash != coro_stash && stash != coro_state_stash))
335	{	389	{
336	/* very slow, but rare, check */	390	/* very slow, but rare, check */
337	if (!sv_derived_from (sv_2mortal (newRV_inc (coro)), "Coro::State"))	391	if (!sv_derived_from (sv_2mortal (newRV_inc (coro)), "Coro::State"))
338	croak ("Coro::State object required");	392	croak ("Coro::State object required");
339	}	393	}
340		394
341	mg = CORO_MAGIC (coro);	395	mg = CORO_MAGIC_state (coro);
342	return (struct coro *)mg->mg_ptr;	396	return (struct coro *)mg->mg_ptr;
343	}	397	}
344		398
345	#define SvSTATE(sv) SvSTATE_ (aTHX_ (sv))	399	#define SvSTATE(sv) SvSTATE_ (aTHX_ (sv))
346		400
347	/* the next two functions merely cache the padlists */	401	/* the next two functions merely cache the padlists */
348	static void	402	static void
349	get_padlist (pTHX_ CV *cv)	403	get_padlist (pTHX_ CV *cv)
350	{	404	{
351	MAGIC *mg = CORO_MAGIC (cv);	405	MAGIC *mg = CORO_MAGIC_cv (cv);
352	AV *av;	406	AV *av;
353		407
354	if (mg && AvFILLp ((av = (AV *)mg->mg_obj)) >= 0)	408	if (expect_true (mg && AvFILLp ((av = (AV *)mg->mg_obj)) >= 0))
355	CvPADLIST (cv) = (AV *)AvARRAY (av)[AvFILLp (av)--];	409	CvPADLIST (cv) = (AV *)AvARRAY (av)[AvFILLp (av)--];
356	else	410	else
357	{	411	{
358	#if CORO_PREFER_PERL_FUNCTIONS	412	#if CORO_PREFER_PERL_FUNCTIONS
359	/* this is probably cleaner, but also slower? */	413	/* this is probably cleaner, but also slower? */
…		…
368	}	422	}
369		423
370	static void	424	static void
371	put_padlist (pTHX_ CV *cv)	425	put_padlist (pTHX_ CV *cv)
372	{	426	{
373	MAGIC *mg = CORO_MAGIC (cv);	427	MAGIC *mg = CORO_MAGIC_cv (cv);
374	AV *av;	428	AV *av;
375		429
376	if (!mg)	430	if (expect_false (!mg))
377	{	431	mg = sv_magicext ((SV )cv, (SV )newAV (), CORO_MAGIC_type_cv, &coro_cv_vtbl, 0, 0);
378	sv_magic ((SV *)cv, 0, PERL_MAGIC_coro, 0, 0);
379	mg = mg_find ((SV *)cv, PERL_MAGIC_coro);
380	mg->mg_virtual = &vtbl_coro;
381	mg->mg_obj = (SV *)newAV ();
382	}
383		432
384	av = (AV *)mg->mg_obj;	433	av = (AV *)mg->mg_obj;
385		434
386	if (AvFILLp (av) >= AvMAX (av))	435	if (expect_false (AvFILLp (av) >= AvMAX (av)))
387	av_extend (av, AvMAX (av) + 1);	436	av_extend (av, AvMAX (av) + 1);
388		437
389	AvARRAY (av)[++AvFILLp (av)] = (SV *)CvPADLIST (cv);	438	AvARRAY (av)[++AvFILLp (av)] = (SV *)CvPADLIST (cv);
390	}	439	}
391		440
392	/ load & save, init *****************************************************/	441	/ load & save, init *****************************************************/
393		442
394	static void	443	static void
395	load_perl (pTHX_ Coro__State c)	444	load_perl (pTHX_ Coro__State c)
396	{	445	{
		446	perl_slots *slot = c->slot;
		447	c->slot = 0;
		448
		449	PL_mainstack = c->mainstack;
		450
		451	GvSV (PL_defgv) = slot->defsv;
		452	GvAV (PL_defgv) = slot->defav;
		453	GvSV (PL_errgv) = slot->errsv;
		454	GvSV (irsgv) = slot->irsgv;
		455
397	#define VAR(name,type) PL_ ## name = c->name;	456	#define VAR(name,type) PL_ ## name = slot->name;
398	# include "state.h"	457	# include "state.h"
399	#undef VAR	458	#undef VAR
400
401	GvSV (PL_defgv) = c->defsv;
402	GvAV (PL_defgv) = c->defav;
403	GvSV (PL_errgv) = c->errsv;
404	GvSV (irsgv) = c->irssv_sv;
405		459
406	{	460	{
407	dSP;	461	dSP;
		462
408	CV *cv;	463	CV *cv;
409		464
410	/* now do the ugly restore mess */	465	/* now do the ugly restore mess */
411	while ((cv = (CV *)POPs))	466	while (expect_true (cv = (CV *)POPs))
412	{	467	{
413	put_padlist (aTHX_ cv); /* mark this padlist as available */	468	put_padlist (aTHX_ cv); /* mark this padlist as available */
414	CvDEPTH (cv) = PTR2IV (POPs);	469	CvDEPTH (cv) = PTR2IV (POPs);
415	CvPADLIST (cv) = (AV *)POPs;	470	CvPADLIST (cv) = (AV *)POPs;
416	}	471	}
…		…
435		490
436	XPUSHs (Nullsv);	491	XPUSHs (Nullsv);
437	/* this loop was inspired by pp_caller */	492	/* this loop was inspired by pp_caller */
438	for (;;)	493	for (;;)
439	{	494	{
440	while (cxix >= 0)	495	while (expect_true (cxix >= 0))
441	{	496	{
442	PERL_CONTEXT *cx = &ccstk[cxix--];	497	PERL_CONTEXT *cx = &ccstk[cxix--];
443		498
444	if (CxTYPE (cx) == CXt_SUB \|\| CxTYPE (cx) == CXt_FORMAT)	499	if (expect_true (CxTYPE (cx) == CXt_SUB \|\| CxTYPE (cx) == CXt_FORMAT))
445	{	500	{
446	CV *cv = cx->blk_sub.cv;	501	CV *cv = cx->blk_sub.cv;
447		502
448	if (CvDEPTH (cv))	503	if (expect_true (CvDEPTH (cv)))
449	{	504	{
450	EXTEND (SP, 3);	505	EXTEND (SP, 3);
451	PUSHs ((SV *)CvPADLIST (cv));	506	PUSHs ((SV *)CvPADLIST (cv));
452	PUSHs (INT2PTR (SV *, CvDEPTH (cv)));	507	PUSHs (INT2PTR (SV *, CvDEPTH (cv)));
453	PUSHs ((SV *)cv);	508	PUSHs ((SV *)cv);
…		…
456	get_padlist (aTHX_ cv);	511	get_padlist (aTHX_ cv);
457	}	512	}
458	}	513	}
459	}	514	}
460		515
461	if (top_si->si_type == PERLSI_MAIN)	516	if (expect_true (top_si->si_type == PERLSI_MAIN))
462	break;	517	break;
463		518
464	top_si = top_si->si_prev;	519	top_si = top_si->si_prev;
465	ccstk = top_si->si_cxstack;	520	ccstk = top_si->si_cxstack;
466	cxix = top_si->si_cxix;	521	cxix = top_si->si_cxix;
467	}	522	}
468		523
469	PUTBACK;	524	PUTBACK;
470	}	525	}
471		526
		527	/* allocate some space on the context stack for our purposes */
		528	/* we manually unroll here, as usually 2 slots is enough */
		529	if (SLOT_COUNT >= 1) CXINC;
		530	if (SLOT_COUNT >= 2) CXINC;
		531	if (SLOT_COUNT >= 3) CXINC;
		532	{
		533	int i;
		534	for (i = 3; i < SLOT_COUNT; ++i)
		535	CXINC;
		536	}
		537	cxstack_ix -= SLOT_COUNT; /* undo allocation */
		538
		539	c->mainstack = PL_mainstack;
		540
		541	{
		542	perl_slots slot = c->slot = (perl_slots )(cxstack + cxstack_ix + 1);
		543
472	c->defav = GvAV (PL_defgv);	544	slot->defav = GvAV (PL_defgv);
473	c->defsv = DEFSV;	545	slot->defsv = DEFSV;
474	c->errsv = ERRSV;	546	slot->errsv = ERRSV;
475	c->irssv_sv = GvSV (irsgv);	547	slot->irsgv = GvSV (irsgv);
476		548
477	#define VAR(name,type)c->name = PL_ ## name;	549	#define VAR(name,type) slot->name = PL_ ## name;
478	# include "state.h"	550	# include "state.h"
479	#undef VAR	551	#undef VAR
		552	}
480	}	553	}
481		554
482	/*	555	/*
483	* allocate various perl stacks. This is an exact copy	556	* allocate various perl stacks. This is an exact copy
484	* of perl.c:init_stacks, except that it uses less memory	557	* of perl.c:init_stacks, except that it uses less memory
…		…
489	# define coro_init_stacks init_stacks	562	# define coro_init_stacks init_stacks
490	#else	563	#else
491	static void	564	static void
492	coro_init_stacks (pTHX)	565	coro_init_stacks (pTHX)
493	{	566	{
494	PL_curstackinfo = new_stackinfo(64, 6);	567	PL_curstackinfo = new_stackinfo(32, 8);
495	PL_curstackinfo->si_type = PERLSI_MAIN;	568	PL_curstackinfo->si_type = PERLSI_MAIN;
496	PL_curstack = PL_curstackinfo->si_stack;	569	PL_curstack = PL_curstackinfo->si_stack;
497	PL_mainstack = PL_curstack; /* remember in case we switch stacks */	570	PL_mainstack = PL_curstack; /* remember in case we switch stacks */
498		571
499	PL_stack_base = AvARRAY(PL_curstack);	572	PL_stack_base = AvARRAY(PL_curstack);
500	PL_stack_sp = PL_stack_base;	573	PL_stack_sp = PL_stack_base;
501	PL_stack_max = PL_stack_base + AvMAX(PL_curstack);	574	PL_stack_max = PL_stack_base + AvMAX(PL_curstack);
502		575
503	New(50,PL_tmps_stack,64,SV*);	576	New(50,PL_tmps_stack,32,SV*);
504	PL_tmps_floor = -1;	577	PL_tmps_floor = -1;
505	PL_tmps_ix = -1;	578	PL_tmps_ix = -1;
506	PL_tmps_max = 64;	579	PL_tmps_max = 32;
507		580
508	New(54,PL_markstack,16,I32);	581	New(54,PL_markstack,16,I32);
509	PL_markstack_ptr = PL_markstack;	582	PL_markstack_ptr = PL_markstack;
510	PL_markstack_max = PL_markstack + 16;	583	PL_markstack_max = PL_markstack + 16;
511		584
512	#ifdef SET_MARK_OFFSET	585	#ifdef SET_MARK_OFFSET
513	SET_MARK_OFFSET;	586	SET_MARK_OFFSET;
514	#endif	587	#endif
515		588
516	New(54,PL_scopestack,16,I32);	589	New(54,PL_scopestack,8,I32);
517	PL_scopestack_ix = 0;	590	PL_scopestack_ix = 0;
518	PL_scopestack_max = 16;	591	PL_scopestack_max = 8;
519		592
520	New(54,PL_savestack,64,ANY);	593	New(54,PL_savestack,24,ANY);
521	PL_savestack_ix = 0;	594	PL_savestack_ix = 0;
522	PL_savestack_max = 64;	595	PL_savestack_max = 24;
523		596
524	#if !PERL_VERSION_ATLEAST (5,9,0)	597	#if !PERL_VERSION_ATLEAST (5,10,0)
525	New(54,PL_retstack,4,OP*);	598	New(54,PL_retstack,4,OP*);
526	PL_retstack_ix = 0;	599	PL_retstack_ix = 0;
527	PL_retstack_max = 4;	600	PL_retstack_max = 4;
528	#endif	601	#endif
529	}	602	}
…		…
552		625
553	Safefree (PL_tmps_stack);	626	Safefree (PL_tmps_stack);
554	Safefree (PL_markstack);	627	Safefree (PL_markstack);
555	Safefree (PL_scopestack);	628	Safefree (PL_scopestack);
556	Safefree (PL_savestack);	629	Safefree (PL_savestack);
557	#if !PERL_VERSION_ATLEAST (5,9,0)	630	#if !PERL_VERSION_ATLEAST (5,10,0)
558	Safefree (PL_retstack);	631	Safefree (PL_retstack);
559	#endif	632	#endif
560	}	633	}
561		634
562	static size_t	635	static size_t
…		…
564	{	637	{
565	size_t rss = sizeof (*coro);	638	size_t rss = sizeof (*coro);
566		639
567	if (coro->mainstack)	640	if (coro->mainstack)
568	{	641	{
		642	perl_slots tmp_slot;
		643	perl_slots *slot;
		644
569	if (coro->flags & CF_RUNNING)	645	if (coro->flags & CF_RUNNING)
570	{	646	{
		647	slot = &tmp_slot;
		648
571	#define VAR(name,type)coro->name = PL_ ## name;	649	#define VAR(name,type) slot->name = PL_ ## name;
572	# include "state.h"	650	# include "state.h"
573	#undef VAR	651	#undef VAR
574	}	652	}
		653	else
		654	slot = coro->slot;
575		655
576	rss += sizeof (coro->curstackinfo);	656	rss += sizeof (slot->curstackinfo);
577	rss += sizeof (SV) + sizeof (struct xpvav) + (1 + AvFILL (coro->curstackinfo->si_stack)) * sizeof (SV *);
578	rss += (coro->curstackinfo->si_cxmax + 1) * sizeof (PERL_CONTEXT);	657	rss += (slot->curstackinfo->si_cxmax + 1) * sizeof (PERL_CONTEXT);
579	rss += sizeof (SV) + sizeof (struct xpvav) + (1 + AvFILL (coro->curstack)) * sizeof (SV *);	658	rss += sizeof (SV) + sizeof (struct xpvav) + (1 + AvMAX (slot->curstack)) * sizeof (SV *);
580	rss += coro->tmps_max * sizeof (SV *);	659	rss += slot->tmps_max * sizeof (SV *);
581	rss += (coro->markstack_max - coro->markstack_ptr) * sizeof (I32);	660	rss += (slot->markstack_max - slot->markstack_ptr) * sizeof (I32);
582	rss += coro->scopestack_max * sizeof (I32);	661	rss += slot->scopestack_max * sizeof (I32);
583	rss += coro->savestack_max * sizeof (ANY);	662	rss += slot->savestack_max * sizeof (ANY);
584		663
585	#if !PERL_VERSION_ATLEAST (5,9,0)	664	#if !PERL_VERSION_ATLEAST (5,10,0)
586	rss += coro->retstack_max * sizeof (OP *);	665	rss += slot->retstack_max * sizeof (OP *);
587	#endif	666	#endif
588	}	667	}
589		668
590	return rss;	669	return rss;
591	}	670	}
592		671
593	/ coroutine stack handling **********************************************/	672	/ coroutine stack handling **********************************************/
		673
		674	static int (orig_sigelem_get) (pTHX_ SV sv, MAGIC *mg);
		675	static int (orig_sigelem_set) (pTHX_ SV sv, MAGIC *mg);
		676
		677	/*
		678	* This overrides the default magic get method of %SIG elements.
		679	* The original one doesn't provide for reading back of PL_diehook/PL_warnhook
		680	* and instead of tryign to save and restore the hash elements, we just provide
		681	* readback here.
		682	* We only do this when the hook is != 0, as they are often set to 0 temporarily,
		683	* not expecting this to actually change the hook. This is a potential problem
		684	* when a schedule happens then, but we ignore this.
		685	*/
		686	static int
		687	coro_sigelem_get (pTHX_ SV sv, MAGIC mg)
		688	{
		689	const char *s = MgPV_nolen_const (mg);
		690
		691	if (*s == '_')
		692	{
		693	if (strEQ (s, "__DIE__" ) && PL_diehook ) return sv_setsv (sv, PL_diehook ), 0;
		694	if (strEQ (s, "__WARN__") && PL_warnhook) return sv_setsv (sv, PL_warnhook), 0;
		695	}
		696
		697	return orig_sigelem_get ? orig_sigelem_get (aTHX_ sv, mg) : 0;
		698	}
		699
		700	static int
		701	coro_sigelem_set (pTHX_ SV sv, MAGIC mg)
		702	{
		703	const char *s = MgPV_nolen_const (mg);
		704
		705	if (*s == '_')
		706	{
		707	SV **svp = 0;
		708
		709	if (strEQ (s, "__DIE__" )) svp = &PL_diehook;
		710	if (strEQ (s, "__WARN__")) svp = &PL_warnhook;
		711
		712	if (svp)
		713	{
		714	SV old = svp;
		715	*svp = newSVsv (sv);
		716	SvREFCNT_dec (old);
		717	return;
		718	}
		719	}
		720
		721	return orig_sigelem_set ? orig_sigelem_set (aTHX_ sv, mg) : 0;
		722	}
594		723
595	static void	724	static void
596	coro_setup (pTHX_ struct coro *coro)	725	coro_setup (pTHX_ struct coro *coro)
597	{	726	{
598	/*	727	/*
…		…
603	PL_runops = RUNOPS_DEFAULT;	732	PL_runops = RUNOPS_DEFAULT;
604	PL_curcop = &PL_compiling;	733	PL_curcop = &PL_compiling;
605	PL_in_eval = EVAL_NULL;	734	PL_in_eval = EVAL_NULL;
606	PL_comppad = 0;	735	PL_comppad = 0;
607	PL_curpm = 0;	736	PL_curpm = 0;
		737	PL_curpad = 0;
608	PL_localizing = 0;	738	PL_localizing = 0;
609	PL_dirty = 0;	739	PL_dirty = 0;
610	PL_restartop = 0;	740	PL_restartop = 0;
		741	#if PERL_VERSION_ATLEAST (5,10,0)
		742	PL_parser = 0;
		743	#endif
		744
		745	/* recreate the die/warn hooks */
		746	PL_diehook = 0; SvSetMagicSV (*hv_fetch (hv_sig, "__DIE__" , sizeof ("__DIE__" ) - 1, 1), rv_diehook );
		747	PL_warnhook = 0; SvSetMagicSV (*hv_fetch (hv_sig, "__WARN__", sizeof ("__WARN__") - 1, 1), rv_warnhook);
611		748
612	GvSV (PL_defgv) = newSV (0);	749	GvSV (PL_defgv) = newSV (0);
613	GvAV (PL_defgv) = coro->args; coro->args = 0;	750	GvAV (PL_defgv) = coro->args; coro->args = 0;
614	GvSV (PL_errgv) = newSV (0);	751	GvSV (PL_errgv) = newSV (0);
615	GvSV (irsgv) = newSVpvn ("\n", 1); sv_magic (GvSV (irsgv), (SV *)irsgv, PERL_MAGIC_sv, "/", 0);	752	GvSV (irsgv) = newSVpvn ("\n", 1); sv_magic (GvSV (irsgv), (SV *)irsgv, PERL_MAGIC_sv, "/", 0);
616	PL_rs = newSVsv (GvSV (irsgv));	753	PL_rs = newSVsv (GvSV (irsgv));
617	PL_defoutgv = SvREFCNT_inc (stdoutgv);	754	PL_defoutgv = (GV *)SvREFCNT_inc (stdoutgv);
618
619	ENTER; /* necessary e.g. for dounwind */
620		755
621	{	756	{
622	dSP;	757	dSP;
623	LOGOP myop;	758	LOGOP myop;
624		759
…		…
631	PUTBACK;	766	PUTBACK;
632	PL_op = (OP *)&myop;	767	PL_op = (OP *)&myop;
633	PL_op = PL_ppaddr[OP_ENTERSUB](aTHX);	768	PL_op = PL_ppaddr[OP_ENTERSUB](aTHX);
634	SPAGAIN;	769	SPAGAIN;
635	}	770	}
		771
		772	/* this newly created coroutine might be run on an existing cctx which most
		773	* likely was suspended in set_stacklevel, called from entersub.
		774	* set_stacklevl doesn't do anything on return, but entersub does LEAVE,
		775	* so we ENTER here for symmetry
		776	*/
		777	ENTER;
636	}	778	}
637		779
638	static void	780	static void
639	coro_destroy (pTHX_ struct coro *coro)	781	coro_destroy (pTHX_ struct coro *coro)
640	{	782	{
…		…
660	SvREFCNT_dec (GvSV (PL_errgv));	802	SvREFCNT_dec (GvSV (PL_errgv));
661	SvREFCNT_dec (PL_defoutgv);	803	SvREFCNT_dec (PL_defoutgv);
662	SvREFCNT_dec (PL_rs);	804	SvREFCNT_dec (PL_rs);
663	SvREFCNT_dec (GvSV (irsgv));	805	SvREFCNT_dec (GvSV (irsgv));
664		806
		807	SvREFCNT_dec (PL_diehook);
		808	SvREFCNT_dec (PL_warnhook);
		809
665	SvREFCNT_dec (coro->saved_deffh);	810	SvREFCNT_dec (coro->saved_deffh);
666	//SvREFCNT_dec (coro->throw);	811	SvREFCNT_dec (coro->throw);
667		812
668	coro_destroy_stacks (aTHX);	813	coro_destroy_stacks (aTHX);
669	}	814	}
670		815
671	static void	816	static void
672	free_coro_mortal (pTHX)	817	free_coro_mortal (pTHX)
673	{	818	{
674	if (coro_mortal)	819	if (expect_true (coro_mortal))
675	{	820	{
676	SvREFCNT_dec (coro_mortal);	821	SvREFCNT_dec (coro_mortal);
677	coro_mortal = 0;	822	coro_mortal = 0;
678	}	823	}
679	}	824	}
…		…
758	SAVETMPS;	903	SAVETMPS;
759	EXTEND (SP, 3);	904	EXTEND (SP, 3);
760	PUSHMARK (SP);	905	PUSHMARK (SP);
761	PUSHs (&PL_sv_yes);	906	PUSHs (&PL_sv_yes);
762	PUSHs (fullname);	907	PUSHs (fullname);
763	PUSHs (cx->blk_sub.hasargs ? sv_2mortal (newRV_inc ((SV *)cx->blk_sub.argarray)) : &PL_sv_undef);	908	PUSHs (CxHASARGS (cx) ? sv_2mortal (newRV_inc ((SV *)cx->blk_sub.argarray)) : &PL_sv_undef);
764	PUTBACK;	909	PUTBACK;
765	cb = hv_fetch ((HV *)SvRV (coro_current), "_trace_sub_cb", sizeof ("_trace_sub_cb") - 1, 0);	910	cb = hv_fetch ((HV *)SvRV (coro_current), "_trace_sub_cb", sizeof ("_trace_sub_cb") - 1, 0);
766	if (cb) call_sv (*cb, G_KEEPERR \| G_EVAL \| G_VOID \| G_DISCARD);	911	if (cb) call_sv (*cb, G_KEEPERR \| G_EVAL \| G_VOID \| G_DISCARD);
767	SPAGAIN;	912	SPAGAIN;
768	FREETMPS;	913	FREETMPS;
…		…
804		949
805	/* inject a fake call to Coro::State::_cctx_init into the execution */	950	/* inject a fake call to Coro::State::_cctx_init into the execution */
806	/* _cctx_init should be careful, as it could be called at almost any time */	951	/* _cctx_init should be careful, as it could be called at almost any time */
807	/* during execution of a perl program */	952	/* during execution of a perl program */
808	static void NOINLINE	953	static void NOINLINE
809	prepare_cctx (pTHX_ coro_cctx *cctx)	954	cctx_prepare (pTHX_ coro_cctx *cctx)
810	{	955	{
811	dSP;	956	dSP;
812	LOGOP myop;	957	LOGOP myop;
813		958
814	PL_top_env = &PL_start_env;	959	PL_top_env = &PL_start_env;
…		…
832		977
833	/*	978	/*
834	* this is a _very_ stripped down perl interpreter ;)	979	* this is a _very_ stripped down perl interpreter ;)
835	*/	980	*/
836	static void	981	static void
837	coro_run (void *arg)	982	cctx_run (void *arg)
838	{	983	{
839	dTHX;	984	dTHX;
840		985
841	/* coro_run is the alternative tail of transfer(), so unlock here. */	986	/* cctx_run is the alternative tail of transfer(), so unlock here. */
842	UNLOCK;	987	UNLOCK;
843		988
844	/* we now skip the entersub that lead to transfer() */	989	/* we now skip the entersub that lead to transfer() */
845	PL_op = PL_op->op_next;	990	PL_op = PL_op->op_next;
846		991
847	/* inject a fake subroutine call to cctx_init */	992	/* inject a fake subroutine call to cctx_init */
848	prepare_cctx (aTHX_ (coro_cctx *)arg);	993	cctx_prepare (aTHX_ (coro_cctx *)arg);
849		994
850	/* somebody or something will hit me for both perl_run and PL_restartop */	995	/* somebody or something will hit me for both perl_run and PL_restartop */
851	PL_restartop = PL_op;	996	PL_restartop = PL_op;
852	perl_run (PL_curinterp);	997	perl_run (PL_curinterp);
853		998
…		…
872	++cctx_count;	1017	++cctx_count;
873		1018
874	Newz (0, cctx, 1, coro_cctx);	1019	Newz (0, cctx, 1, coro_cctx);
875		1020
876	#if HAVE_MMAP	1021	#if HAVE_MMAP
877
878	cctx->ssize = ((coro_stacksize * sizeof (long) + PAGESIZE - 1) / PAGESIZE + CORO_STACKGUARD) * PAGESIZE;	1022	cctx->ssize = ((coro_stacksize * sizeof (long) + PAGESIZE - 1) / PAGESIZE + CORO_STACKGUARD) * PAGESIZE;
879	/* mmap supposedly does allocate-on-write for us */	1023	/* mmap supposedly does allocate-on-write for us */
880	cctx->sptr = mmap (0, cctx->ssize, PROT_EXEC\|PROT_READ\|PROT_WRITE, MAP_PRIVATE\|MAP_ANONYMOUS, 0, 0);	1024	cctx->sptr = mmap (0, cctx->ssize, PROT_EXEC\|PROT_READ\|PROT_WRITE, MAP_PRIVATE\|MAP_ANONYMOUS, 0, 0);
881		1025
882	if (cctx->sptr != (void *)-1)	1026	if (cctx->sptr != (void *)-1)
…		…
903	stack_start = cctx->sptr;	1047	stack_start = cctx->sptr;
904	stack_size = cctx->ssize;	1048	stack_size = cctx->ssize;
905	}	1049	}
906		1050
907	REGISTER_STACK (cctx, (char )stack_start, (char )stack_start + stack_size);	1051	REGISTER_STACK (cctx, (char )stack_start, (char )stack_start + stack_size);
908	coro_create (&cctx->cctx, coro_run, (void *)cctx, stack_start, stack_size);	1052	coro_create (&cctx->cctx, cctx_run, (void *)cctx, stack_start, stack_size);
909		1053
910	return cctx;	1054	return cctx;
911	}	1055	}
912		1056
913	static void	1057	static void
…		…
936	#define CCTX_EXPIRED(cctx) ((cctx)->ssize < coro_stacksize \|\| ((cctx)->flags & CC_NOREUSE))	1080	#define CCTX_EXPIRED(cctx) ((cctx)->ssize < coro_stacksize \|\| ((cctx)->flags & CC_NOREUSE))
937		1081
938	static coro_cctx *	1082	static coro_cctx *
939	cctx_get (pTHX)	1083	cctx_get (pTHX)
940	{	1084	{
941	while (cctx_first)	1085	while (expect_true (cctx_first))
942	{	1086	{
943	coro_cctx *cctx = cctx_first;	1087	coro_cctx *cctx = cctx_first;
944	cctx_first = cctx->next;	1088	cctx_first = cctx->next;
945	--cctx_idle;	1089	--cctx_idle;
946		1090
947	if (!CCTX_EXPIRED (cctx))	1091	if (expect_true (!CCTX_EXPIRED (cctx)))
948	return cctx;	1092	return cctx;
949		1093
950	cctx_destroy (cctx);	1094	cctx_destroy (cctx);
951	}	1095	}
952		1096
…		…
955		1099
956	static void	1100	static void
957	cctx_put (coro_cctx *cctx)	1101	cctx_put (coro_cctx *cctx)
958	{	1102	{
959	/* free another cctx if overlimit */	1103	/* free another cctx if overlimit */
960	if (cctx_idle >= MAX_IDLE_CCTX)	1104	if (expect_false (cctx_idle >= MAX_IDLE_CCTX))
961	{	1105	{
962	coro_cctx *first = cctx_first;	1106	coro_cctx *first = cctx_first;
963	cctx_first = first->next;	1107	cctx_first = first->next;
964	--cctx_idle;	1108	--cctx_idle;
965		1109
…		…
971	cctx_first = cctx;	1115	cctx_first = cctx;
972	}	1116	}
973		1117
974	/ coroutine switching ***************************************************/	1118	/ coroutine switching ***************************************************/
975		1119
976	static void NOINLINE	1120	static void
977	transfer_check (pTHX_ struct coro prev, struct coro next)	1121	transfer_check (pTHX_ struct coro prev, struct coro next)
978	{	1122	{
979	if (prev != next)	1123	if (expect_true (prev != next))
980	{	1124	{
981	if (!(prev->flags & (CF_RUNNING \| CF_NEW)))	1125	if (expect_false (!(prev->flags & (CF_RUNNING \| CF_NEW))))
982	croak ("Coro::State::transfer called with non-running/new prev Coro::State, but can only transfer from running or new states");	1126	croak ("Coro::State::transfer called with non-running/new prev Coro::State, but can only transfer from running or new states");
983		1127
984	if (next->flags & CF_RUNNING)	1128	if (expect_false (next->flags & CF_RUNNING))
985	croak ("Coro::State::transfer called with running next Coro::State, but can only transfer to inactive states");	1129	croak ("Coro::State::transfer called with running next Coro::State, but can only transfer to inactive states");
986		1130
987	if (next->flags & CF_DESTROYED)	1131	if (expect_false (next->flags & CF_DESTROYED))
988	croak ("Coro::State::transfer called with destroyed next Coro::State, but can only transfer to inactive states");	1132	croak ("Coro::State::transfer called with destroyed next Coro::State, but can only transfer to inactive states");
989		1133
		1134	#if !PERL_VERSION_ATLEAST (5,10,0)
990	if (PL_lex_state != LEX_NOTPARSING)	1135	if (expect_false (PL_lex_state != LEX_NOTPARSING))
991	croak ("Coro::State::transfer called while parsing, but this is not supported");	1136	croak ("Coro::State::transfer called while parsing, but this is not supported in your perl version");
		1137	#endif
992	}	1138	}
993	}	1139	}
994		1140
995	/* always use the TRANSFER macro */	1141	/* always use the TRANSFER macro */
996	static void NOINLINE	1142	static void NOINLINE
997	transfer (pTHX_ struct coro prev, struct coro next)	1143	transfer (pTHX_ struct coro prev, struct coro next, int force_cctx)
998	{	1144	{
999	dSTACKLEVEL;	1145	dSTACKLEVEL;
		1146	static volatile int has_throw;
1000		1147
1001	/* sometimes transfer is only called to set idle_sp */	1148	/* sometimes transfer is only called to set idle_sp */
1002	if (!next)	1149	if (expect_false (!next))
1003	{	1150	{
1004	((coro_cctx *)prev)->idle_sp = STACKLEVEL;	1151	((coro_cctx *)prev)->idle_sp = STACKLEVEL;
1005	assert (((coro_cctx )prev)->idle_te = PL_top_env); / just for the side-effect when asserts are enabled */	1152	assert (((coro_cctx )prev)->idle_te = PL_top_env); / just for the side-effect when asserts are enabled */
1006	}	1153	}
1007	else if (prev != next)	1154	else if (expect_true (prev != next))
1008	{	1155	{
1009	coro_cctx *prev__cctx;	1156	coro_cctx *prev__cctx;
1010		1157
1011	if (prev->flags & CF_NEW)	1158	if (expect_false (prev->flags & CF_NEW))
1012	{	1159	{
1013	/* create a new empty context */	1160	/* create a new empty context */
1014	Newz (0, prev->cctx, 1, coro_cctx);	1161	Newz (0, prev->cctx, 1, coro_cctx);
1015	prev->flags &= ~CF_NEW;	1162	prev->flags &= ~CF_NEW;
1016	prev->flags \|= CF_RUNNING;	1163	prev->flags \|= CF_RUNNING;
…		…
1019	prev->flags &= ~CF_RUNNING;	1166	prev->flags &= ~CF_RUNNING;
1020	next->flags \|= CF_RUNNING;	1167	next->flags \|= CF_RUNNING;
1021		1168
1022	LOCK;	1169	LOCK;
1023		1170
		1171	/* first get rid of the old state */
		1172	save_perl (aTHX_ prev);
		1173
1024	if (next->flags & CF_NEW)	1174	if (expect_false (next->flags & CF_NEW))
1025	{	1175	{
1026	/* need to start coroutine */	1176	/* need to start coroutine */
1027	next->flags &= ~CF_NEW;	1177	next->flags &= ~CF_NEW;
1028	/* first get rid of the old state */
1029	save_perl (aTHX_ prev);
1030	/* setup coroutine call */	1178	/* setup coroutine call */
1031	coro_setup (aTHX_ next);	1179	coro_setup (aTHX_ next);
1032	}	1180	}
1033	else	1181	else
1034	{
1035	/* coroutine already started */
1036	save_perl (aTHX_ prev);
1037	load_perl (aTHX_ next);	1182	load_perl (aTHX_ next);
1038	}
1039		1183
1040	prev__cctx = prev->cctx;	1184	prev__cctx = prev->cctx;
1041		1185
1042	/* possibly "free" the cctx */	1186	/* possibly "free" the cctx */
1043	if (prev__cctx->idle_sp == STACKLEVEL && !(prev__cctx->flags & CC_TRACE))	1187	if (expect_true (
		1188	prev__cctx->idle_sp == STACKLEVEL
		1189	&& !(prev__cctx->flags & CC_TRACE)
		1190	&& !force_cctx
		1191	))
1044	{	1192	{
1045	/* I assume that STACKLEVEL is a stronger indicator than PL_top_env changes */	1193	/* I assume that STACKLEVEL is a stronger indicator than PL_top_env changes */
1046	assert (("ERROR: current top_env must equal previous top_env", PL_top_env == prev__cctx->idle_te));	1194	assert (("ERROR: current top_env must equal previous top_env", PL_top_env == prev__cctx->idle_te));
1047		1195
1048	prev->cctx = 0;	1196	prev->cctx = 0;
1049		1197
1050	/* if the cctx is about to be destroyed we need to make sure we won't see it in cctx_get */	1198	/* if the cctx is about to be destroyed we need to make sure we won't see it in cctx_get */
		1199	/* without this the next cctx_get might destroy the prev__cctx while still in use */
1051	if (CCTX_EXPIRED (prev__cctx))	1200	if (expect_false (CCTX_EXPIRED (prev__cctx)))
		1201	if (!next->cctx)
1052	next->cctx = cctx_get (aTHX);	1202	next->cctx = cctx_get (aTHX);
1053		1203
1054	cctx_put (prev__cctx);	1204	cctx_put (prev__cctx);
1055	}	1205	}
1056		1206
1057	++next->usecount;	1207	++next->usecount;
1058		1208
1059	if (!next->cctx)	1209	if (expect_true (!next->cctx))
1060	next->cctx = cctx_get (aTHX);	1210	next->cctx = cctx_get (aTHX);
1061		1211
		1212	has_throw = !!next->throw;
		1213
1062	if (prev__cctx != next->cctx)	1214	if (expect_false (prev__cctx != next->cctx))
1063	{	1215	{
1064	prev__cctx->top_env = PL_top_env;	1216	prev__cctx->top_env = PL_top_env;
1065	PL_top_env = next->cctx->top_env;	1217	PL_top_env = next->cctx->top_env;
1066	coro_transfer (&prev__cctx->cctx, &next->cctx->cctx);	1218	coro_transfer (&prev__cctx->cctx, &next->cctx->cctx);
1067	}	1219	}
1068		1220
1069	free_coro_mortal (aTHX);	1221	free_coro_mortal (aTHX);
1070	UNLOCK;	1222	UNLOCK;
		1223
		1224	if (expect_false (has_throw))
		1225	{
		1226	struct coro *coro = SvSTATE (coro_current);
		1227
		1228	if (coro->throw)
		1229	{
		1230	SV *exception = coro->throw;
		1231	coro->throw = 0;
		1232	sv_setsv (ERRSV, exception);
		1233	croak (0);
		1234	}
		1235	}
1071	}	1236	}
1072	}	1237	}
1073		1238
1074	struct transfer_args	1239	struct transfer_args
1075	{	1240	{
1076	struct coro prev, next;	1241	struct coro prev, next;
1077	};	1242	};
1078		1243
1079	#define TRANSFER(ta) transfer (aTHX_ (ta).prev, (ta).next)	1244	#define TRANSFER(ta, force_cctx) transfer (aTHX_ (ta).prev, (ta).next, (force_cctx))
1080	#define TRANSFER_CHECK(ta) transfer_check (aTHX_ (ta).prev, (ta).next)	1245	#define TRANSFER_CHECK(ta) transfer_check (aTHX_ (ta).prev, (ta).next)
1081		1246
1082	/ high level stuff ******************************************************/	1247	/ high level stuff ******************************************************/
1083		1248
1084	static int	1249	static int
…		…
1110	save_perl (aTHX_ &temp);	1275	save_perl (aTHX_ &temp);
1111	load_perl (aTHX_ coro);	1276	load_perl (aTHX_ coro);
1112		1277
1113	coro_destroy (aTHX_ coro);	1278	coro_destroy (aTHX_ coro);
1114		1279
1115	load_perl (aTHX_ &temp); /* this will get rid of defsv etc.. */	1280	load_perl (aTHX_ &temp);
1116		1281
1117	coro->mainstack = 0;	1282	coro->slot = 0;
1118	}	1283	}
1119		1284
1120	cctx_destroy (coro->cctx);	1285	cctx_destroy (coro->cctx);
1121	SvREFCNT_dec (coro->args);	1286	SvREFCNT_dec (coro->args);
1122		1287
…		…
1178	{	1343	{
1179	dTHX;	1344	dTHX;
1180	struct transfer_args ta;	1345	struct transfer_args ta;
1181		1346
1182	prepare_transfer (aTHX_ &ta, prev_sv, next_sv);	1347	prepare_transfer (aTHX_ &ta, prev_sv, next_sv);
1183	TRANSFER (ta);	1348	TRANSFER (ta, 1);
1184	}	1349	}
1185		1350
1186	/ Coro ******************************************************************/	1351	/ Coro ******************************************************************/
1187		1352
1188	static void	1353	static void
…		…
1190	{	1355	{
1191	av_push (coro_ready [SvSTATE (coro_sv)->prio - PRIO_MIN], coro_sv);	1356	av_push (coro_ready [SvSTATE (coro_sv)->prio - PRIO_MIN], coro_sv);
1192	}	1357	}
1193		1358
1194	static SV *	1359	static SV *
1195	coro_deq (pTHX_ int min_prio)	1360	coro_deq (pTHX)
1196	{	1361	{
1197	int prio = PRIO_MAX - PRIO_MIN;	1362	int prio;
1198		1363
1199	min_prio -= PRIO_MIN;
1200	if (min_prio < 0)
1201	min_prio = 0;
1202
1203	for (prio = PRIO_MAX - PRIO_MIN + 1; --prio >= min_prio; )	1364	for (prio = PRIO_MAX - PRIO_MIN + 1; --prio >= 0; )
1204	if (AvFILLp (coro_ready [prio]) >= 0)	1365	if (AvFILLp (coro_ready [prio]) >= 0)
1205	return av_shift (coro_ready [prio]);	1366	return av_shift (coro_ready [prio]);
1206		1367
1207	return 0;	1368	return 0;
1208	}	1369	}
…		…
1244	SV prev_sv, next_sv;	1405	SV prev_sv, next_sv;
1245		1406
1246	for (;;)	1407	for (;;)
1247	{	1408	{
1248	LOCK;	1409	LOCK;
1249	next_sv = coro_deq (aTHX_ PRIO_MIN);	1410	next_sv = coro_deq (aTHX);
1250		1411
1251	/* nothing to schedule: call the idle handler */	1412	/* nothing to schedule: call the idle handler */
1252	if (!next_sv)	1413	if (expect_false (!next_sv))
1253	{	1414	{
1254	dSP;	1415	dSP;
1255	UNLOCK;	1416	UNLOCK;
1256		1417
1257	ENTER;	1418	ENTER;
1258	SAVETMPS;	1419	SAVETMPS;
1259		1420
1260	PUSHMARK (SP);	1421	PUSHMARK (SP);
1261	PUTBACK;	1422	PUTBACK;
1262	call_sv (get_sv ("Coro::idle", FALSE), G_DISCARD);	1423	call_sv (get_sv ("Coro::idle", FALSE), G_DISCARD);
		1424	SPAGAIN;
1263		1425
1264	FREETMPS;	1426	FREETMPS;
1265	LEAVE;	1427	LEAVE;
1266	continue;	1428	continue;
1267	}	1429	}
1268		1430
1269	ta->next = SvSTATE (next_sv);	1431	ta->next = SvSTATE (next_sv);
1270		1432
1271	/* cannot transfer to destroyed coros, skip and look for next */	1433	/* cannot transfer to destroyed coros, skip and look for next */
1272	if (ta->next->flags & CF_DESTROYED)	1434	if (expect_false (ta->next->flags & CF_DESTROYED))
1273	{	1435	{
1274	UNLOCK;	1436	UNLOCK;
1275	SvREFCNT_dec (next_sv);	1437	SvREFCNT_dec (next_sv);
1276	/* coro_nready is already taken care of by destroy */	1438	/* coro_nready is already taken care of by destroy */
1277	continue;	1439	continue;
…		…
1322	{	1484	{
1323	dTHX;	1485	dTHX;
1324	struct transfer_args ta;	1486	struct transfer_args ta;
1325		1487
1326	prepare_schedule (aTHX_ &ta);	1488	prepare_schedule (aTHX_ &ta);
1327	TRANSFER (ta);	1489	TRANSFER (ta, 1);
1328	}	1490	}
1329		1491
1330	static int	1492	static int
1331	api_cede (void)	1493	api_cede (void)
1332	{	1494	{
1333	dTHX;	1495	dTHX;
1334	struct transfer_args ta;	1496	struct transfer_args ta;
1335		1497
1336	prepare_cede (aTHX_ &ta);	1498	prepare_cede (aTHX_ &ta);
1337		1499
1338	if (ta.prev != ta.next)	1500	if (expect_true (ta.prev != ta.next))
1339	{	1501	{
1340	TRANSFER (ta);	1502	TRANSFER (ta, 1);
1341	return 1;	1503	return 1;
1342	}	1504	}
1343	else	1505	else
1344	return 0;	1506	return 0;
1345	}	1507	}
…		…
1350	dTHX;	1512	dTHX;
1351	struct transfer_args ta;	1513	struct transfer_args ta;
1352		1514
1353	if (prepare_cede_notself (aTHX_ &ta))	1515	if (prepare_cede_notself (aTHX_ &ta))
1354	{	1516	{
1355	TRANSFER (ta);	1517	TRANSFER (ta, 1);
1356	return 1;	1518	return 1;
1357	}	1519	}
1358	else	1520	else
1359	return 0;	1521	return 0;
1360	}	1522	}
…		…
1379	coro->cctx->flags &= ~(CC_TRACE \| CC_TRACE_ALL);	1541	coro->cctx->flags &= ~(CC_TRACE \| CC_TRACE_ALL);
1380		1542
1381	if (coro->flags & CF_RUNNING)	1543	if (coro->flags & CF_RUNNING)
1382	PL_runops = RUNOPS_DEFAULT;	1544	PL_runops = RUNOPS_DEFAULT;
1383	else	1545	else
1384	coro->runops = RUNOPS_DEFAULT;	1546	coro->slot->runops = RUNOPS_DEFAULT;
1385	}	1547	}
1386	}	1548	}
1387		1549
1388	MODULE = Coro::State PACKAGE = Coro::State PREFIX = api_	1550	MODULE = Coro::State PACKAGE = Coro::State PREFIX = api_
1389		1551
…		…
1396	#endif	1558	#endif
1397	BOOT_PAGESIZE;	1559	BOOT_PAGESIZE;
1398		1560
1399	irsgv = gv_fetchpv ("/" , GV_ADD\|GV_NOTQUAL, SVt_PV);	1561	irsgv = gv_fetchpv ("/" , GV_ADD\|GV_NOTQUAL, SVt_PV);
1400	stdoutgv = gv_fetchpv ("STDOUT", GV_ADD\|GV_NOTQUAL, SVt_PVIO);	1562	stdoutgv = gv_fetchpv ("STDOUT", GV_ADD\|GV_NOTQUAL, SVt_PVIO);
		1563
		1564	orig_sigelem_get = PL_vtbl_sigelem.svt_get;
		1565	PL_vtbl_sigelem.svt_get = coro_sigelem_get;
		1566	orig_sigelem_set = PL_vtbl_sigelem.svt_set;
		1567	PL_vtbl_sigelem.svt_set = coro_sigelem_set;
		1568
		1569	hv_sig = coro_get_hv (aTHX_ "SIG", TRUE);
		1570	rv_diehook = newRV_inc ((SV *)gv_fetchpv ("Coro::State::diehook" , 0, SVt_PVCV));
		1571	rv_warnhook = newRV_inc ((SV *)gv_fetchpv ("Coro::State::warnhook", 0, SVt_PVCV));
1401		1572
1402	coro_state_stash = gv_stashpv ("Coro::State", TRUE);	1573	coro_state_stash = gv_stashpv ("Coro::State", TRUE);
1403		1574
1404	newCONSTSUB (coro_state_stash, "CC_TRACE" , newSViv (CC_TRACE));	1575	newCONSTSUB (coro_state_stash, "CC_TRACE" , newSViv (CC_TRACE));
1405	newCONSTSUB (coro_state_stash, "CC_TRACE_SUB" , newSViv (CC_TRACE_SUB));	1576	newCONSTSUB (coro_state_stash, "CC_TRACE_SUB" , newSViv (CC_TRACE_SUB));
…		…
1411		1582
1412	while (main_top_env->je_prev)	1583	while (main_top_env->je_prev)
1413	main_top_env = main_top_env->je_prev;	1584	main_top_env = main_top_env->je_prev;
1414		1585
1415	coroapi.ver = CORO_API_VERSION;	1586	coroapi.ver = CORO_API_VERSION;
		1587	coroapi.rev = CORO_API_REVISION;
1416	coroapi.transfer = api_transfer;	1588	coroapi.transfer = api_transfer;
1417		1589
1418	assert (("PRIO_NORMAL must be 0", !PRIO_NORMAL));	1590	assert (("PRIO_NORMAL must be 0", !PRIO_NORMAL));
1419	}	1591	}
1420		1592
1421	SV *	1593	SV *
1422	new (char *klass, ...)	1594	new (char *klass, ...)
1423	CODE:	1595	CODE:
1424	{	1596	{
1425	struct coro *coro;	1597	struct coro *coro;
		1598	MAGIC *mg;
1426	HV *hv;	1599	HV *hv;
1427	int i;	1600	int i;
1428		1601
1429	Newz (0, coro, 1, struct coro);	1602	Newz (0, coro, 1, struct coro);
1430	coro->args = newAV ();	1603	coro->args = newAV ();
…		…
1433	if (coro_first) coro_first->prev = coro;	1606	if (coro_first) coro_first->prev = coro;
1434	coro->next = coro_first;	1607	coro->next = coro_first;
1435	coro_first = coro;	1608	coro_first = coro;
1436		1609
1437	coro->hv = hv = newHV ();	1610	coro->hv = hv = newHV ();
1438	sv_magicext ((SV )hv, 0, PERL_MAGIC_ext, &coro_state_vtbl, (char )coro, 0)->mg_flags \|= MGf_DUP;	1611	mg = sv_magicext ((SV )hv, 0, CORO_MAGIC_type_state, &coro_state_vtbl, (char )coro, 0);
		1612	mg->mg_flags \|= MGf_DUP;
1439	RETVAL = sv_bless (newRV_noinc ((SV *)hv), gv_stashpv (klass, 1));	1613	RETVAL = sv_bless (newRV_noinc ((SV *)hv), gv_stashpv (klass, 1));
1440		1614
1441	av_extend (coro->args, items - 1);	1615	av_extend (coro->args, items - 1);
1442	for (i = 1; i < items; i++)	1616	for (i = 1; i < items; i++)
1443	av_push (coro->args, newSVsv (ST (i)));	1617	av_push (coro->args, newSVsv (ST (i)));
…		…
1457	Coro::cede_notself = 4	1631	Coro::cede_notself = 4
1458	CODE:	1632	CODE:
1459	{	1633	{
1460	struct transfer_args ta;	1634	struct transfer_args ta;
1461		1635
		1636	PUTBACK;
1462	switch (ix)	1637	switch (ix)
1463	{	1638	{
1464	case 0:	1639	case 0:
1465	ta.prev = (struct coro )INT2PTR (coro_cctx , SvIV (ST (0)));	1640	ta.prev = (struct coro )INT2PTR (coro_cctx , SvIV (ST (0)));
1466	ta.next = 0;	1641	ta.next = 0;
…		…
1485	if (!prepare_cede_notself (aTHX_ &ta))	1660	if (!prepare_cede_notself (aTHX_ &ta))
1486	XSRETURN_EMPTY;	1661	XSRETURN_EMPTY;
1487		1662
1488	break;	1663	break;
1489	}	1664	}
		1665	SPAGAIN;
1490		1666
1491	BARRIER;	1667	BARRIER;
		1668	PUTBACK;
1492	TRANSFER (ta);	1669	TRANSFER (ta, 0);
1493		1670	SPAGAIN; /* might be the sp of a different coroutine now */
1494	if (GIMME_V != G_VOID && ta.next != ta.prev)	1671	/* be extra careful not to ever do anything after TRANSFER */
1495	XSRETURN_YES;
1496	}	1672	}
1497		1673
1498	bool	1674	bool
1499	_destroy (SV *coro_sv)	1675	_destroy (SV *coro_sv)
1500	CODE:	1676	CODE:
…		…
1549	CODE:	1725	CODE:
1550	{	1726	{
1551	if (coro->mainstack)	1727	if (coro->mainstack)
1552	{	1728	{
1553	struct coro temp;	1729	struct coro temp;
1554	Zero (&temp, 1, struct coro);
1555		1730
1556	if (!(coro->flags & CF_RUNNING))	1731	if (!(coro->flags & CF_RUNNING))
1557	{	1732	{
		1733	PUTBACK;
1558	save_perl (aTHX_ &temp);	1734	save_perl (aTHX_ &temp);
1559	load_perl (aTHX_ coro);	1735	load_perl (aTHX_ coro);
1560	}	1736	}
1561		1737
1562	{	1738	{
1563	dSP;	1739	dSP;
1564	ENTER;	1740	ENTER;
1565	SAVETMPS;	1741	SAVETMPS;
		1742	PUTBACK;
		1743	PUSHSTACK;
1566	PUSHMARK (SP);	1744	PUSHMARK (SP);
1567	PUTBACK;	1745
1568	if (ix)	1746	if (ix)
1569	eval_sv (coderef, 0);	1747	eval_sv (coderef, 0);
1570	else	1748	else
1571	call_sv (coderef, G_KEEPERR \| G_EVAL \| G_VOID \| G_DISCARD);	1749	call_sv (coderef, G_KEEPERR \| G_EVAL \| G_VOID \| G_DISCARD);
		1750
		1751	POPSTACK;
1572	SPAGAIN;	1752	SPAGAIN;
1573	FREETMPS;	1753	FREETMPS;
1574	LEAVE;	1754	LEAVE;
1575	PUTBACK;	1755	PUTBACK;
1576	}	1756	}
1577		1757
1578	if (!(coro->flags & CF_RUNNING))	1758	if (!(coro->flags & CF_RUNNING))
1579	{	1759	{
1580	save_perl (aTHX_ coro);	1760	save_perl (aTHX_ coro);
1581	load_perl (aTHX_ &temp);	1761	load_perl (aTHX_ &temp);
		1762	SPAGAIN;
1582	}	1763	}
1583	}	1764	}
1584	}	1765	}
1585		1766
1586	SV *	1767	SV *
…		…
1627	case 1: RETVAL = coro->usecount; break;	1808	case 1: RETVAL = coro->usecount; break;
1628	}	1809	}
1629	OUTPUT:	1810	OUTPUT:
1630	RETVAL	1811	RETVAL
1631		1812
		1813	void
		1814	force_cctx ()
		1815	CODE:
		1816	struct coro *coro = SvSTATE (coro_current);
		1817	coro->cctx->idle_sp = 0;
1632		1818
1633	MODULE = Coro::State PACKAGE = Coro	1819	MODULE = Coro::State PACKAGE = Coro
1634		1820
1635	BOOT:	1821	BOOT:
1636	{	1822	{
1637	int i;	1823	int i;
1638		1824
1639	sv_pool_rss = get_sv ("Coro::POOL_RSS" , TRUE);	1825	sv_pool_rss = coro_get_sv (aTHX_ "Coro::POOL_RSS" , TRUE);
1640	sv_pool_size = get_sv ("Coro::POOL_SIZE" , TRUE);	1826	sv_pool_size = coro_get_sv (aTHX_ "Coro::POOL_SIZE" , TRUE);
1641	av_async_pool = get_av ("Coro::async_pool", TRUE);	1827	av_async_pool = coro_get_av (aTHX_ "Coro::async_pool", TRUE);
1642		1828
1643	coro_current = get_sv ("Coro::current", FALSE);	1829	coro_current = coro_get_sv (aTHX_ "Coro::current", FALSE);
1644	SvREADONLY_on (coro_current);	1830	SvREADONLY_on (coro_current);
1645		1831
1646	coro_stash = gv_stashpv ("Coro", TRUE);	1832	coro_stash = gv_stashpv ("Coro", TRUE);
1647		1833
1648	newCONSTSUB (coro_stash, "PRIO_MAX", newSViv (PRIO_MAX));	1834	newCONSTSUB (coro_stash, "PRIO_MAX", newSViv (PRIO_MAX));
1649	newCONSTSUB (coro_stash, "PRIO_HIGH", newSViv (PRIO_HIGH));	1835	newCONSTSUB (coro_stash, "PRIO_HIGH", newSViv (PRIO_HIGH));
1650	newCONSTSUB (coro_stash, "PRIO_NORMAL", newSViv (PRIO_NORMAL));	1836	newCONSTSUB (coro_stash, "PRIO_NORMAL", newSViv (PRIO_NORMAL));
1651	newCONSTSUB (coro_stash, "PRIO_LOW", newSViv (PRIO_LOW));	1837	newCONSTSUB (coro_stash, "PRIO_LOW", newSViv (PRIO_LOW));
…		…
1654		1840
1655	for (i = PRIO_MAX - PRIO_MIN + 1; i--; )	1841	for (i = PRIO_MAX - PRIO_MIN + 1; i--; )
1656	coro_ready[i] = newAV ();	1842	coro_ready[i] = newAV ();
1657		1843
1658	{	1844	{
1659	SV *sv = perl_get_sv("Coro::API", 1);	1845	SV *sv = perl_get_sv ("Coro::API", TRUE);
		1846	perl_get_sv ("Coro::API", TRUE); /* silence 5.10 warning */
1660		1847
1661	coroapi.schedule = api_schedule;	1848	coroapi.schedule = api_schedule;
1662	coroapi.cede = api_cede;	1849	coroapi.cede = api_cede;
1663	coroapi.cede_notself = api_cede_notself;	1850	coroapi.cede_notself = api_cede_notself;
1664	coroapi.ready = api_ready;	1851	coroapi.ready = api_ready;
…		…
1715	CODE:	1902	CODE:
1716	RETVAL = coro_nready;	1903	RETVAL = coro_nready;
1717	OUTPUT:	1904	OUTPUT:
1718	RETVAL	1905	RETVAL
1719		1906
		1907	void
		1908	throw (Coro::State self, SV *throw = &PL_sv_undef)
		1909	PROTOTYPE: $;$
		1910	CODE:
		1911	SvREFCNT_dec (self->throw);
		1912	self->throw = SvOK (throw) ? newSVsv (throw) : 0;
		1913
		1914	void
		1915	swap_defsv (Coro::State self)
		1916	PROTOTYPE: $
		1917	ALIAS:
		1918	swap_defav = 1
		1919	CODE:
		1920	if (!self->slot)
		1921	croak ("cannot swap state with coroutine that has no saved state");
		1922	else
		1923	{
		1924	SV src = ix ? (SV )&GvAV (PL_defgv) : &GvSV (PL_defgv);
		1925	SV dst = ix ? (SV )&self->slot->defav : (SV **)&self->slot->defsv;
		1926
		1927	SV tmp = src; src = dst; *dst = tmp;
		1928	}
		1929
1720	# for async_pool speedup	1930	# for async_pool speedup
1721	void	1931	void
1722	_pool_1 (SV *cb)	1932	_pool_1 (SV *cb)
1723	CODE:	1933	CODE:
1724	{	1934	{
…		…
1728	SV *invoke = hv_delete (hv, "_invoke", sizeof ("_invoke") - 1, 0);	1938	SV *invoke = hv_delete (hv, "_invoke", sizeof ("_invoke") - 1, 0);
1729	AV *invoke_av;	1939	AV *invoke_av;
1730	int i, len;	1940	int i, len;
1731		1941
1732	if (!invoke)	1942	if (!invoke)
		1943	{
		1944	SvREFCNT_dec (PL_diehook); PL_diehook = 0;
1733	croak ("\3terminate\2\n");	1945	croak ("\3async_pool terminate\2\n");
		1946	}
1734		1947
1735	SvREFCNT_dec (coro->saved_deffh);	1948	SvREFCNT_dec (coro->saved_deffh);
1736	coro->saved_deffh = SvREFCNT_inc ((SV *)PL_defoutgv);	1949	coro->saved_deffh = SvREFCNT_inc ((SV *)PL_defoutgv);
1737		1950
1738	hv_store (hv, "desc", sizeof ("desc") - 1,	1951	hv_store (hv, "desc", sizeof ("desc") - 1,
…		…
1764	SvREFCNT_dec ((SV )PL_defoutgv); PL_defoutgv = (GV )coro->saved_deffh;	1977	SvREFCNT_dec ((SV )PL_defoutgv); PL_defoutgv = (GV )coro->saved_deffh;
1765	coro->saved_deffh = 0;	1978	coro->saved_deffh = 0;
1766		1979
1767	if (coro_rss (aTHX_ coro) > SvIV (sv_pool_rss)	1980	if (coro_rss (aTHX_ coro) > SvIV (sv_pool_rss)
1768	\|\| av_len (av_async_pool) + 1 >= SvIV (sv_pool_size))	1981	\|\| av_len (av_async_pool) + 1 >= SvIV (sv_pool_size))
		1982	{
		1983	SvREFCNT_dec (PL_diehook); PL_diehook = 0;
1769	croak ("\3terminate\2\n");	1984	croak ("\3async_pool terminate\2\n");
		1985	}
1770		1986
1771	av_clear (GvAV (PL_defgv));	1987	av_clear (GvAV (PL_defgv));
1772	hv_store ((HV *)SvRV (coro_current), "desc", sizeof ("desc") - 1,	1988	hv_store ((HV *)SvRV (coro_current), "desc", sizeof ("desc") - 1,
1773	newSVpvn ("[async_pool idle]", sizeof ("[async_pool idle]") - 1), 0);	1989	newSVpvn ("[async_pool idle]", sizeof ("[async_pool idle]") - 1), 0);
1774		1990

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Comparing Coro/Coro/State.xs (file contents): Revision 1.193 by root, Fri Oct 5 23:38:40 2007 UTC vs. Revision 1.230 by root, Mon Apr 14 11:28:59 2008 UTC

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Comparing Coro/Coro/State.xs (file contents):
Revision 1.193 by root, Fri Oct 5 23:38:40 2007 UTC vs.
Revision 1.230 by root, Mon Apr 14 11:28:59 2008 UTC