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

Comparing Coro/Coro/State.xs (file contents):
Revision 1.152 by root, Thu Sep 20 12:02:25 2007 UTC vs.
Revision 1.215 by root, Sun Oct 14 19:34:09 2007 UTC

…		…
1	#include "libcoro/coro.c"	1	#include "libcoro/coro.c"
2		2
3	#define PERL_NO_GET_CONTEXT	3	#define PERL_NO_GET_CONTEXT
		4	#define PERL_EXT
4		5
5	#include "EXTERN.h"	6	#include "EXTERN.h"
6	#include "perl.h"	7	#include "perl.h"
7	#include "XSUB.h"	8	#include "XSUB.h"
8		9
9	#include "patchlevel.h"	10	#include "patchlevel.h"
10		11
11	#include <stdio.h>	12	#include <stdio.h>
12	#include <errno.h>	13	#include <errno.h>
13	#include <assert.h>	14	#include <assert.h>
		15	#include <inttypes.h> /* portable stdint.h */
14		16
15	#ifdef HAVE_MMAP	17	#ifdef HAVE_MMAP
16	# include <unistd.h>	18	# include <unistd.h>
17	# include <sys/mman.h>	19	# include <sys/mman.h>
18	# ifndef MAP_ANONYMOUS	20	# ifndef MAP_ANONYMOUS
75	/* 5.8.7 */	77	/* 5.8.7 */
76	#ifndef SvRV_set	78	#ifndef SvRV_set
77	# define SvRV_set(s,v) SvRV(s) = (v)	79	# define SvRV_set(s,v) SvRV(s) = (v)
78	#endif	80	#endif
79		81
		82	/* 5.8.8 */
		83	#ifndef GV_NOTQUAL
		84	# define GV_NOTQUAL 0
		85	#endif
		86	#ifndef newSV
		87	# define newSV(l) NEWSV(0,l)
		88	#endif
		89
80	#if !__i386 && !__x86_64 && !__powerpc && !__m68k && !__alpha && !__mips && !__sparc64	90	#if !__i386 && !__x86_64 && !__powerpc && !__m68k && !__alpha && !__mips && !__sparc64
81	# undef CORO_STACKGUARD	91	# undef CORO_STACKGUARD
82	#endif	92	#endif
83		93
84	#ifndef CORO_STACKGUARD	94	#ifndef CORO_STACKGUARD
…		…
88	/* prefer perl internal functions over our own? */	98	/* prefer perl internal functions over our own? */
89	#ifndef CORO_PREFER_PERL_FUNCTIONS	99	#ifndef CORO_PREFER_PERL_FUNCTIONS
90	# define CORO_PREFER_PERL_FUNCTIONS 0	100	# define CORO_PREFER_PERL_FUNCTIONS 0
91	#endif	101	#endif
92		102
93	/* The next macro should declare a variable stacklevel that contains and approximation	103	/* The next macros try to return the current stack pointer, in an as
94	* to the current C stack pointer. Its property is that it changes with each call	104	* portable way as possible. */
95	* and should be unique. */
96	#define dSTACKLEVEL int stacklevel	105	#define dSTACKLEVEL volatile char stacklevel
97	#define STACKLEVEL ((void *)&stacklevel)	106	#define STACKLEVEL ((void *)&stacklevel)
98		107
99	#define IN_DESTRUCT (PL_main_cv == Nullcv)	108	#define IN_DESTRUCT (PL_main_cv == Nullcv)
100		109
101	#if __GNUC__ >= 3	110	#if __GNUC__ >= 3
102	# define attribute(x) __attribute__(x)	111	# define attribute(x) __attribute__(x)
103	# define BARRIER __asm__ __volatile__ ("" : : : "memory")	112	# define BARRIER __asm__ __volatile__ ("" : : : "memory")
		113	# define expect(expr,value) __builtin_expect ((expr),(value))
104	#else	114	#else
105	# define attribute(x)	115	# define attribute(x)
106	# define BARRIER	116	# define BARRIER
		117	# define expect(expr,value) (expr)
107	#endif	118	#endif
		119
		120	#define expect_false(expr) expect ((expr) != 0, 0)
		121	#define expect_true(expr) expect ((expr) != 0, 1)
108		122
109	#define NOINLINE attribute ((noinline))	123	#define NOINLINE attribute ((noinline))
110		124
111	#include "CoroAPI.h"	125	#include "CoroAPI.h"
112		126
…		…
133	static AV main_mainstack; / used to differentiate between $main and others */	147	static AV main_mainstack; / used to differentiate between $main and others */
134	static JMPENV *main_top_env;	148	static JMPENV *main_top_env;
135	static HV coro_state_stash, coro_stash;	149	static HV coro_state_stash, coro_stash;
136	static SV coro_mortal; / will be freed after next transfer */	150	static SV coro_mortal; / will be freed after next transfer */
137		151
		152	static GV irsgv; / $/ */
		153	static GV stdoutgv; / STDOUT /
		154	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;
		162
138	static struct coro_cctx *cctx_first;	163	static struct coro_cctx *cctx_first;
139	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	};
140		174
141	/* this is a structure representing a c-level coroutine */	175	/* this is a structure representing a c-level coroutine */
142	typedef struct coro_cctx {	176	typedef struct coro_cctx {
143	struct coro_cctx *next;	177	struct coro_cctx *next;
144		178
…		…
153	coro_context cctx;	187	coro_context cctx;
154		188
155	#if CORO_USE_VALGRIND	189	#if CORO_USE_VALGRIND
156	int valgrind_id;	190	int valgrind_id;
157	#endif	191	#endif
158	char inuse, mapped;	192	unsigned char flags;
159	} coro_cctx;	193	} coro_cctx;
160		194
161	enum {	195	enum {
162	CF_RUNNING = 0x0001, /* coroutine is running */	196	CF_RUNNING = 0x0001, /* coroutine is running */
163	CF_READY = 0x0002, /* coroutine is ready */	197	CF_READY = 0x0002, /* coroutine is ready */
164	CF_NEW = 0x0004, /* has never been switched to */	198	CF_NEW = 0x0004, /* has never been switched to */
165	CF_DESTROYED = 0x0008, /* coroutine data has been freed */	199	CF_DESTROYED = 0x0008, /* coroutine data has been freed */
166	};	200	};
167		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
168	/* this is a structure representing a perl-level coroutine */	215	/* this is a structure representing a perl-level coroutine */
169	struct coro {	216	struct coro {
170	/* the c coroutine allocated to this perl coroutine, if any */	217	/* the c coroutine allocated to this perl coroutine, if any */
171	coro_cctx *cctx;	218	coro_cctx *cctx;
172		219
		220	/* process data */
		221	AV *mainstack;
		222	perl_slots slot; / basically the saved sp */
		223
173	/* data associated with this coroutine (initial args) */	224	AV args; / data associated with this coroutine (initial args) */
174	AV *args;	225	int refcnt; /* coroutines are refcounted, yes */
175	int refcnt;
176	int save; /* CORO_SAVE flags */
177	int flags; /* CF_ flags */	226	int flags; /* CF_ flags */
		227	HV hv; / the perl hash associated with this coro, if any */
178		228
179	/* optionally saved, might be zero */	229	/* statistics */
180	AV defav; / @_ */	230	int usecount; /* number of transfers to this coro */
181	SV defsv; / $_ */
182	SV errsv; / $@ */
183	GV deffh; / default filehandle */
184	SV irssv; / $/ */
185	SV irssv_sv; / real $/ cache */
186
187	#define VAR(name,type) type name;
188	# include "state.h"
189	#undef VAR
190		231
191	/* coro process data */	232	/* coro process data */
192	int prio;	233	int prio;
		234	SV throw; / exception to be thrown */
		235
		236	/* async_pool */
		237	SV *saved_deffh;
193		238
194	/* linked list */	239	/* linked list */
195	struct coro next, prev;	240	struct coro next, prev;
196	HV hv; / the perl hash associated with this coro, if any */
197	};	241	};
198		242
199	typedef struct coro *Coro__State;	243	typedef struct coro *Coro__State;
200	typedef struct coro *Coro__State_or_hashref;	244	typedef struct coro *Coro__State_or_hashref;
201		245
…		…
210		254
211	/* for Coro.pm */	255	/* for Coro.pm */
212	static SV *coro_current;	256	static SV *coro_current;
213	static AV *coro_ready [PRIO_MAX-PRIO_MIN+1];	257	static AV *coro_ready [PRIO_MAX-PRIO_MIN+1];
214	static int coro_nready;	258	static int coro_nready;
215	static struct coro *first;	259	static struct coro *coro_first;
216		260
217	/ 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	}
218		292
219	static AV *	293	static AV *
220	coro_clone_padlist (pTHX_ CV *cv)	294	coro_clone_padlist (pTHX_ CV *cv)
221	{	295	{
222	AV *padlist = CvPADLIST (cv);	296	AV *padlist = CvPADLIST (cv);
…		…
270		344
271	/* casting is fun. */	345	/* casting is fun. */
272	while (&PL_sv_undef != (SV )(padlist = (AV )av_pop (av)))	346	while (&PL_sv_undef != (SV )(padlist = (AV )av_pop (av)))
273	free_padlist (aTHX_ padlist);	347	free_padlist (aTHX_ padlist);
274		348
275	SvREFCNT_dec (av);
276
277	return 0;	349	return 0;
278	}	350	}
279		351
280	#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
281		354
282	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	};
283		359
284	#define CORO_MAGIC(cv) \	360	#define CORO_MAGIC(sv,type) \
285	SvMAGIC (cv) \	361	SvMAGIC (sv) \
286	? SvMAGIC (cv)->mg_type == PERL_MAGIC_coro \	362	? SvMAGIC (sv)->mg_type == type \
287	? SvMAGIC (cv) \	363	? SvMAGIC (sv) \
288	: mg_find ((SV *)cv, PERL_MAGIC_coro) \	364	: mg_find (sv, type) \
289	: 0	365	: 0
290		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
291	/* the next two functions merely cache the padlists */	396	/* the next two functions merely cache the padlists */
292	static void	397	static void
293	get_padlist (pTHX_ CV *cv)	398	get_padlist (pTHX_ CV *cv)
294	{	399	{
295	MAGIC *mg = CORO_MAGIC (cv);	400	MAGIC *mg = CORO_MAGIC_cv (cv);
296	AV *av;	401	AV *av;
297		402
298	if (mg && AvFILLp ((av = (AV *)mg->mg_obj)) >= 0)	403	if (expect_true (mg && AvFILLp ((av = (AV *)mg->mg_obj)) >= 0))
299	CvPADLIST (cv) = (AV *)AvARRAY (av)[AvFILLp (av)--];	404	CvPADLIST (cv) = (AV *)AvARRAY (av)[AvFILLp (av)--];
300	else	405	else
301	{	406	{
302	#if CORO_PREFER_PERL_FUNCTIONS	407	#if CORO_PREFER_PERL_FUNCTIONS
303	/* this is probably cleaner, but also slower? */	408	/* this is probably cleaner, but also slower? */
…		…
312	}	417	}
313		418
314	static void	419	static void
315	put_padlist (pTHX_ CV *cv)	420	put_padlist (pTHX_ CV *cv)
316	{	421	{
317	MAGIC *mg = CORO_MAGIC (cv);	422	MAGIC *mg = CORO_MAGIC_cv (cv);
318	AV *av;	423	AV *av;
319		424
320	if (!mg)	425	if (expect_false (!mg))
321	{	426	mg = sv_magicext ((SV )cv, (SV )newAV (), CORO_MAGIC_type_cv, &coro_cv_vtbl, 0, 0);
322	sv_magic ((SV *)cv, 0, PERL_MAGIC_coro, 0, 0);
323	mg = mg_find ((SV *)cv, PERL_MAGIC_coro);
324	mg->mg_virtual = &vtbl_coro;
325	mg->mg_obj = (SV *)newAV ();
326	}
327		427
328	av = (AV *)mg->mg_obj;	428	av = (AV *)mg->mg_obj;
329		429
330	if (AvFILLp (av) >= AvMAX (av))	430	if (expect_false (AvFILLp (av) >= AvMAX (av)))
331	av_extend (av, AvMAX (av) + 1);	431	av_extend (av, AvMAX (av) + 1);
332		432
333	AvARRAY (av)[++AvFILLp (av)] = (SV *)CvPADLIST (cv);	433	AvARRAY (av)[++AvFILLp (av)] = (SV *)CvPADLIST (cv);
334	}	434	}
335		435
336	/ load & save, init *****************************************************/	436	/ load & save, init *****************************************************/
337		437
338	#define SB do {
339	#define SE } while (0)
340
341	#define REPLACE_SV(sv,val) SB SvREFCNT_dec (sv); (sv) = (val); (val) = 0; SE
342
343	static void	438	static void
344	load_perl (pTHX_ Coro__State c)	439	load_perl (pTHX_ Coro__State c)
345	{	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
346	#define VAR(name,type) PL_ ## name = c->name;	451	#define VAR(name,type) PL_ ## name = slot->name;
347	# include "state.h"	452	# include "state.h"
348	#undef VAR	453	#undef VAR
349
350	if (c->defav) REPLACE_SV (GvAV (PL_defgv), c->defav);
351	if (c->defsv) REPLACE_SV (DEFSV , c->defsv);
352	if (c->errsv) REPLACE_SV (ERRSV , c->errsv);
353	if (c->deffh) REPLACE_SV (PL_defoutgv , c->deffh);
354
355	if (c->irssv)
356	{
357	if (c->irssv == PL_rs \|\| sv_eq (PL_rs, c->irssv))
358	{
359	SvREFCNT_dec (c->irssv);
360	c->irssv = 0;
361	}
362	else
363	{
364	REPLACE_SV (PL_rs, c->irssv);
365	if (!c->irssv_sv) c->irssv_sv = get_sv ("/", 0);
366	sv_setsv (c->irssv_sv, PL_rs);
367	}
368	}
369		454
370	{	455	{
371	dSP;	456	dSP;
		457
372	CV *cv;	458	CV *cv;
373		459
374	/* now do the ugly restore mess */	460	/* now do the ugly restore mess */
375	while ((cv = (CV *)POPs))	461	while (expect_true (cv = (CV *)POPs))
376	{	462	{
377	put_padlist (aTHX_ cv); /* mark this padlist as available */	463	put_padlist (aTHX_ cv); /* mark this padlist as available */
378	CvDEPTH (cv) = PTR2IV (POPs);	464	CvDEPTH (cv) = PTR2IV (POPs);
379	CvPADLIST (cv) = (AV *)POPs;	465	CvPADLIST (cv) = (AV *)POPs;
380	}	466	}
…		…
395	/*	481	/*
396	* the worst thing you can imagine happens first - we have to save	482	* the worst thing you can imagine happens first - we have to save
397	* (and reinitialize) all cv's in the whole callchain :(	483	* (and reinitialize) all cv's in the whole callchain :(
398	*/	484	*/
399		485
400	EXTEND (SP, 3 + 1);
401	PUSHs (Nullsv);	486	XPUSHs (Nullsv);
402	/* this loop was inspired by pp_caller */	487	/* this loop was inspired by pp_caller */
403	for (;;)	488	for (;;)
404	{	489	{
405	while (cxix >= 0)	490	while (expect_true (cxix >= 0))
406	{	491	{
407	PERL_CONTEXT *cx = &ccstk[cxix--];	492	PERL_CONTEXT *cx = &ccstk[cxix--];
408		493
409	if (CxTYPE (cx) == CXt_SUB \|\| CxTYPE (cx) == CXt_FORMAT)	494	if (expect_true (CxTYPE (cx) == CXt_SUB \|\| CxTYPE (cx) == CXt_FORMAT))
410	{	495	{
411	CV *cv = cx->blk_sub.cv;	496	CV *cv = cx->blk_sub.cv;
412		497
413	if (CvDEPTH (cv))	498	if (expect_true (CvDEPTH (cv)))
414	{	499	{
415	EXTEND (SP, 3);	500	EXTEND (SP, 3);
416	PUSHs ((SV *)CvPADLIST (cv));	501	PUSHs ((SV *)CvPADLIST (cv));
417	PUSHs (INT2PTR (SV *, CvDEPTH (cv)));	502	PUSHs (INT2PTR (SV *, CvDEPTH (cv)));
418	PUSHs ((SV *)cv);	503	PUSHs ((SV *)cv);
…		…
421	get_padlist (aTHX_ cv);	506	get_padlist (aTHX_ cv);
422	}	507	}
423	}	508	}
424	}	509	}
425		510
426	if (top_si->si_type == PERLSI_MAIN)	511	if (expect_true (top_si->si_type == PERLSI_MAIN))
427	break;	512	break;
428		513
429	top_si = top_si->si_prev;	514	top_si = top_si->si_prev;
430	ccstk = top_si->si_cxstack;	515	ccstk = top_si->si_cxstack;
431	cxix = top_si->si_cxix;	516	cxix = top_si->si_cxix;
432	}	517	}
433		518
434	PUTBACK;	519	PUTBACK;
435	}	520	}
436		521
437	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 */
438	c->defsv = c->save & CORO_SAVE_DEFSV ? SvREFCNT_inc (DEFSV) : 0;	523	/* we manually unroll here, as usually 2 slots is enough */
439	c->errsv = c->save & CORO_SAVE_ERRSV ? SvREFCNT_inc (ERRSV) : 0;	524	if (SLOT_COUNT >= 1) CXINC;
440	c->deffh = c->save & CORO_SAVE_DEFFH ? (GV *)SvREFCNT_inc (PL_defoutgv) : 0;	525	if (SLOT_COUNT >= 2) CXINC;
441	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 */
442		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
443	#define VAR(name,type)c->name = PL_ ## name;	544	#define VAR(name,type) slot->name = PL_ ## name;
444	# include "state.h"	545	# include "state.h"
445	#undef VAR	546	#undef VAR
		547	}
446	}	548	}
447		549
448	/*	550	/*
449	* allocate various perl stacks. This is an exact copy	551	* allocate various perl stacks. This is an exact copy
450	* of perl.c:init_stacks, except that it uses less memory	552	* of perl.c:init_stacks, except that it uses less memory
…		…
455	# define coro_init_stacks init_stacks	557	# define coro_init_stacks init_stacks
456	#else	558	#else
457	static void	559	static void
458	coro_init_stacks (pTHX)	560	coro_init_stacks (pTHX)
459	{	561	{
460	PL_curstackinfo = new_stackinfo(128, 1024/sizeof(PERL_CONTEXT));	562	PL_curstackinfo = new_stackinfo(32, 8);
461	PL_curstackinfo->si_type = PERLSI_MAIN;	563	PL_curstackinfo->si_type = PERLSI_MAIN;
462	PL_curstack = PL_curstackinfo->si_stack;	564	PL_curstack = PL_curstackinfo->si_stack;
463	PL_mainstack = PL_curstack; /* remember in case we switch stacks */	565	PL_mainstack = PL_curstack; /* remember in case we switch stacks */
464		566
465	PL_stack_base = AvARRAY(PL_curstack);	567	PL_stack_base = AvARRAY(PL_curstack);
466	PL_stack_sp = PL_stack_base;	568	PL_stack_sp = PL_stack_base;
467	PL_stack_max = PL_stack_base + AvMAX(PL_curstack);	569	PL_stack_max = PL_stack_base + AvMAX(PL_curstack);
468		570
469	New(50,PL_tmps_stack,128,SV*);	571	New(50,PL_tmps_stack,32,SV*);
470	PL_tmps_floor = -1;	572	PL_tmps_floor = -1;
471	PL_tmps_ix = -1;	573	PL_tmps_ix = -1;
472	PL_tmps_max = 128;	574	PL_tmps_max = 32;
473		575
474	New(54,PL_markstack,32,I32);	576	New(54,PL_markstack,16,I32);
475	PL_markstack_ptr = PL_markstack;	577	PL_markstack_ptr = PL_markstack;
476	PL_markstack_max = PL_markstack + 32;	578	PL_markstack_max = PL_markstack + 16;
477		579
478	#ifdef SET_MARK_OFFSET	580	#ifdef SET_MARK_OFFSET
479	SET_MARK_OFFSET;	581	SET_MARK_OFFSET;
480	#endif	582	#endif
481		583
482	New(54,PL_scopestack,32,I32);	584	New(54,PL_scopestack,8,I32);
483	PL_scopestack_ix = 0;	585	PL_scopestack_ix = 0;
484	PL_scopestack_max = 32;	586	PL_scopestack_max = 8;
485		587
486	New(54,PL_savestack,64,ANY);	588	New(54,PL_savestack,24,ANY);
487	PL_savestack_ix = 0;	589	PL_savestack_ix = 0;
488	PL_savestack_max = 64;	590	PL_savestack_max = 24;
489		591
490	#if !PERL_VERSION_ATLEAST (5,9,0)	592	#if !PERL_VERSION_ATLEAST (5,9,0)
491	New(54,PL_retstack,16,OP*);	593	New(54,PL_retstack,4,OP*);
492	PL_retstack_ix = 0;	594	PL_retstack_ix = 0;
493	PL_retstack_max = 16;	595	PL_retstack_max = 4;
494	#endif	596	#endif
495	}	597	}
496	#endif	598	#endif
497		599
498	/*	600	/*
499	* destroy the stacks, the callchain etc...	601	* destroy the stacks, the callchain etc...
500	*/	602	*/
501	static void	603	static void
502	coro_destroy_stacks (pTHX)	604	coro_destroy_stacks (pTHX)
503	{	605	{
504	if (!IN_DESTRUCT)
505	{
506	/* restore all saved variables and stuff */
507	LEAVE_SCOPE (0);
508	assert (PL_tmps_floor == -1);
509
510	/* free all temporaries */
511	FREETMPS;
512	assert (PL_tmps_ix == -1);
513
514	/* unwind all extra stacks */
515	POPSTACK_TO (PL_mainstack);
516
517	/* unwind main stack */
518	dounwind (-1);
519	}
520
521	while (PL_curstackinfo->si_next)	606	while (PL_curstackinfo->si_next)
522	PL_curstackinfo = PL_curstackinfo->si_next;	607	PL_curstackinfo = PL_curstackinfo->si_next;
523		608
524	while (PL_curstackinfo)	609	while (PL_curstackinfo)
525	{	610	{
…		…
541	Safefree (PL_retstack);	626	Safefree (PL_retstack);
542	#endif	627	#endif
543	}	628	}
544		629
545	static size_t	630	static size_t
546	coro_rss (struct coro *coro)	631	coro_rss (pTHX_ struct coro *coro)
547	{	632	{
548	size_t rss = sizeof (coro);	633	size_t rss = sizeof (*coro);
549		634
550	if (coro->mainstack)	635	if (coro->mainstack)
551	{	636	{
		637	perl_slots tmp_slot;
		638	perl_slots *slot;
		639
		640	if (coro->flags & CF_RUNNING)
		641	{
		642	slot = &tmp_slot;
		643
		644	#define VAR(name,type) slot->name = PL_ ## name;
		645	# include "state.h"
		646	#undef VAR
		647	}
		648	else
		649	slot = coro->slot;
		650
552	rss += sizeof (coro->curstackinfo);	651	rss += sizeof (slot->curstackinfo);
553	rss += sizeof (struct xpvav) + (1 + AvFILL (coro->curstackinfo->si_stack)) * sizeof (SV *);
554	rss += (coro->curstackinfo->si_cxmax + 1) * sizeof (PERL_CONTEXT);	652	rss += (slot->curstackinfo->si_cxmax + 1) * sizeof (PERL_CONTEXT);
555
556	rss += sizeof (struct xpvav) + (1 + AvFILL (coro->curstack)) * sizeof (SV *);	653	rss += sizeof (SV) + sizeof (struct xpvav) + (1 + AvMAX (slot->curstack)) * sizeof (SV *);
557
558	rss += coro->tmps_max * sizeof (SV *);	654	rss += slot->tmps_max * sizeof (SV *);
559
560	rss += (coro->markstack_max - coro->markstack_ptr) * sizeof (I32);	655	rss += (slot->markstack_max - slot->markstack_ptr) * sizeof (I32);
561
562	rss += coro->scopestack_max * sizeof (I32);	656	rss += slot->scopestack_max * sizeof (I32);
563
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;
793		1125
794	/* sometimes transfer is only called to set idle_sp */	1126	/* sometimes transfer is only called to set idle_sp */
795	if (!next)	1127	if (expect_false (!next))
796	{	1128	{
797	((coro_cctx *)prev)->idle_sp = STACKLEVEL;	1129	((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 */	1130	assert (((coro_cctx )prev)->idle_te = PL_top_env); / just for the side-effect when asserts are enabled */
799	}	1131	}
800	else if (prev != next)	1132	else if (expect_true (prev != next))
801	{	1133	{
802	coro_cctx *prev__cctx;	1134	coro_cctx *prev__cctx;
803		1135
804	if (prev->flags & CF_NEW)	1136	if (expect_false (prev->flags & CF_NEW))
805	{	1137	{
806	/* create a new empty context */	1138	/* create a new empty context */
807	Newz (0, prev->cctx, 1, coro_cctx);	1139	Newz (0, prev->cctx, 1, coro_cctx);
808	prev->cctx->inuse = 1;
809	prev->flags &= ~CF_NEW;	1140	prev->flags &= ~CF_NEW;
810	prev->flags \|= CF_RUNNING;	1141	prev->flags \|= CF_RUNNING;
811	}	1142	}
812		1143
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;	1144	prev->flags &= ~CF_RUNNING;
824	next->flags \|= CF_RUNNING;	1145	next->flags \|= CF_RUNNING;
825		1146
826	LOCK;	1147	LOCK;
827		1148
		1149	/* first get rid of the old state */
		1150	save_perl (aTHX_ prev);
		1151
828	if (next->flags & CF_NEW)	1152	if (expect_false (next->flags & CF_NEW))
829	{	1153	{
830	/* need to start coroutine */	1154	/* need to start coroutine */
831	next->flags &= ~CF_NEW;	1155	next->flags &= ~CF_NEW;
832	/* first get rid of the old state */
833	save_perl (aTHX_ prev);
834	/* setup coroutine call */	1156	/* setup coroutine call */
835	setup_coro (aTHX_ next);	1157	coro_setup (aTHX_ next);
836	/* need a new stack */
837	assert (!next->cctx);
838	}	1158	}
839	else	1159	else
840	{
841	/* coroutine already started */
842	save_perl (aTHX_ prev);
843	load_perl (aTHX_ next);	1160	load_perl (aTHX_ next);
844	}
845		1161
846	prev__cctx = prev->cctx;	1162	prev__cctx = prev->cctx;
847		1163
848	/* possibly "free" the cctx */	1164	/* possibly "free" the cctx */
849	if (prev__cctx->idle_sp == STACKLEVEL)	1165	if (expect_true (prev__cctx->idle_sp == STACKLEVEL && !(prev__cctx->flags & CC_TRACE)))
850	{	1166	{
851	/* I assume that STACKLEVEL is a stronger indicator than PL_top_env changes */	1167	/* 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));	1168	assert (("ERROR: current top_env must equal previous top_env", PL_top_env == prev__cctx->idle_te));
853		1169
854	prev->cctx = 0;	1170	prev->cctx = 0;
855		1171
		1172	/* if the cctx is about to be destroyed we need to make sure we won't see it in cctx_get */
		1173	/* without this the next cctx_get might destroy the prev__cctx while still in use */
		1174	if (expect_false (CCTX_EXPIRED (prev__cctx)))
		1175	if (!next->cctx)
		1176	next->cctx = cctx_get (aTHX);
		1177
856	cctx_put (prev__cctx);	1178	cctx_put (prev__cctx);
857	prev__cctx->inuse = 0;
858	}	1179	}
859		1180
		1181	++next->usecount;
		1182
860	if (!next->cctx)	1183	if (expect_true (!next->cctx))
861	{
862	next->cctx = cctx_get (aTHX);	1184	next->cctx = cctx_get (aTHX);
863	assert (!next->cctx->inuse);
864	next->cctx->inuse = 1;
865	}
866		1185
867	if (prev__cctx != next->cctx)	1186	if (expect_false (prev__cctx != next->cctx))
868	{	1187	{
869	prev__cctx->top_env = PL_top_env;	1188	prev__cctx->top_env = PL_top_env;
870	PL_top_env = next->cctx->top_env;	1189	PL_top_env = next->cctx->top_env;
871	coro_transfer (&prev__cctx->cctx, &next->cctx->cctx);	1190	coro_transfer (&prev__cctx->cctx, &next->cctx->cctx);
872	}	1191	}
873		1192
874	free_coro_mortal (aTHX);	1193	free_coro_mortal (aTHX);
875	UNLOCK;	1194	UNLOCK;
		1195
		1196	if (expect_false (prev->throw \|\| next->throw))
		1197	{
		1198	struct coro *coro = SvSTATE (coro_current);
		1199
		1200	if (coro->throw)
		1201	{
		1202	SV *exception = coro->throw;
		1203	coro->throw = 0;
		1204	sv_setsv (ERRSV, exception);
		1205	croak (0);
		1206	}
		1207	}
876	}	1208	}
877	}	1209	}
878		1210
879	struct transfer_args	1211	struct transfer_args
880	{	1212	{
881	struct coro prev, next;	1213	struct coro prev, next;
882	};	1214	};
883		1215
884	#define TRANSFER(ta) transfer (aTHX_ (ta).prev, (ta).next)	1216	#define TRANSFER(ta) transfer (aTHX_ (ta).prev, (ta).next)
		1217	#define TRANSFER_CHECK(ta) transfer_check (aTHX_ (ta).prev, (ta).next)
885		1218
886	/ high level stuff ******************************************************/	1219	/ high level stuff ******************************************************/
887		1220
888	static int	1221	static int
889	coro_state_destroy (pTHX_ struct coro *coro)	1222	coro_state_destroy (pTHX_ struct coro *coro)
…		…
906		1239
907	if (coro->mainstack && coro->mainstack != main_mainstack)	1240	if (coro->mainstack && coro->mainstack != main_mainstack)
908	{	1241	{
909	struct coro temp;	1242	struct coro temp;
910		1243
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)	1244	if (coro->flags & CF_RUNNING)
917	croak ("FATAL: tried to destroy currently running coroutine");	1245	croak ("FATAL: tried to destroy currently running coroutine");
918		1246
919	save_perl (aTHX_ &temp);	1247	save_perl (aTHX_ &temp);
920	load_perl (aTHX_ coro);	1248	load_perl (aTHX_ coro);
921		1249
922	coro_destroy_stacks (aTHX);	1250	coro_destroy (aTHX_ coro);
923		1251
924	load_perl (aTHX_ &temp); /* this will get rid of defsv etc.. */	1252	load_perl (aTHX_ &temp);
925		1253
926	coro->mainstack = 0;	1254	coro->slot = 0;
927	}	1255	}
928		1256
929	cctx_destroy (coro->cctx);	1257	cctx_destroy (coro->cctx);
930	SvREFCNT_dec (coro->args);	1258	SvREFCNT_dec (coro->args);
931		1259
932	if (coro->next) coro->next->prev = coro->prev;	1260	if (coro->next) coro->next->prev = coro->prev;
933	if (coro->prev) coro->prev->next = coro->next;	1261	if (coro->prev) coro->prev->next = coro->next;
934	if (coro == first) first = coro->next;	1262	if (coro == coro_first) coro_first = coro->next;
935		1263
936	return 1;	1264	return 1;
937	}	1265	}
938		1266
939	static int	1267	static int
…		…
972	#else	1300	#else
973	# define MGf_DUP 0	1301	# define MGf_DUP 0
974	#endif	1302	#endif
975	};	1303	};
976		1304
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	1305	static void
1001	prepare_transfer (pTHX_ struct transfer_args ta, SV prev_sv, SV *next_sv)	1306	prepare_transfer (pTHX_ struct transfer_args ta, SV prev_sv, SV *next_sv)
1002	{	1307	{
1003	ta->prev = SvSTATE (prev_sv);	1308	ta->prev = SvSTATE (prev_sv);
1004	ta->next = SvSTATE (next_sv);	1309	ta->next = SvSTATE (next_sv);
		1310	TRANSFER_CHECK (*ta);
1005	}	1311	}
1006		1312
1007	static void	1313	static void
1008	api_transfer (SV prev_sv, SV next_sv)	1314	api_transfer (SV prev_sv, SV next_sv)
1009	{	1315	{
1010	dTHX;	1316	dTHX;
1011	struct transfer_args ta;	1317	struct transfer_args ta;
1012		1318
1013	prepare_transfer (aTHX_ &ta, prev_sv, next_sv);	1319	prepare_transfer (aTHX_ &ta, prev_sv, next_sv);
1014	TRANSFER (ta);	1320	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	}	1321	}
1029		1322
1030	/ Coro ******************************************************************/	1323	/ Coro ******************************************************************/
1031		1324
1032	static void	1325	static void
…		…
1091	{	1384	{
1092	LOCK;	1385	LOCK;
1093	next_sv = coro_deq (aTHX_ PRIO_MIN);	1386	next_sv = coro_deq (aTHX_ PRIO_MIN);
1094		1387
1095	/* nothing to schedule: call the idle handler */	1388	/* nothing to schedule: call the idle handler */
1096	if (!next_sv)	1389	if (expect_false (!next_sv))
1097	{	1390	{
1098	dSP;	1391	dSP;
1099	UNLOCK;	1392	UNLOCK;
1100		1393
1101	ENTER;	1394	ENTER;
…		…
1111	}	1404	}
1112		1405
1113	ta->next = SvSTATE (next_sv);	1406	ta->next = SvSTATE (next_sv);
1114		1407
1115	/* cannot transfer to destroyed coros, skip and look for next */	1408	/* cannot transfer to destroyed coros, skip and look for next */
1116	if (ta->next->flags & CF_DESTROYED)	1409	if (expect_false (ta->next->flags & CF_DESTROYED))
1117	{	1410	{
1118	UNLOCK;	1411	UNLOCK;
1119	SvREFCNT_dec (next_sv);	1412	SvREFCNT_dec (next_sv);
1120	/* coro_nready is already taken care of by destroy */	1413	/* coro_nready is already taken care of by destroy */
1121	continue;	1414	continue;
…		…
1126	break;	1419	break;
1127	}	1420	}
1128		1421
1129	/* free this only after the transfer */	1422	/* free this only after the transfer */
1130	prev_sv = SvRV (coro_current);	1423	prev_sv = SvRV (coro_current);
1131	SvRV_set (coro_current, next_sv);
1132	ta->prev = SvSTATE (prev_sv);	1424	ta->prev = SvSTATE (prev_sv);
1133		1425	TRANSFER_CHECK (*ta);
1134	assert (ta->next->flags & CF_READY);	1426	assert (ta->next->flags & CF_READY);
1135	ta->next->flags &= ~CF_READY;	1427	ta->next->flags &= ~CF_READY;
		1428	SvRV_set (coro_current, next_sv);
1136		1429
1137	LOCK;	1430	LOCK;
1138	free_coro_mortal (aTHX);	1431	free_coro_mortal (aTHX);
1139	coro_mortal = prev_sv;	1432	coro_mortal = prev_sv;
1140	UNLOCK;	1433	UNLOCK;
…		…
1177	dTHX;	1470	dTHX;
1178	struct transfer_args ta;	1471	struct transfer_args ta;
1179		1472
1180	prepare_cede (aTHX_ &ta);	1473	prepare_cede (aTHX_ &ta);
1181		1474
1182	if (ta.prev != ta.next)	1475	if (expect_true (ta.prev != ta.next))
1183	{	1476	{
1184	TRANSFER (ta);	1477	TRANSFER (ta);
1185	return 1;	1478	return 1;
1186	}	1479	}
1187	else	1480	else
…		…
1201	}	1494	}
1202	else	1495	else
1203	return 0;	1496	return 0;
1204	}	1497	}
1205		1498
		1499	static void
		1500	api_trace (SV *coro_sv, int flags)
		1501	{
		1502	dTHX;
		1503	struct coro *coro = SvSTATE (coro_sv);
		1504
		1505	if (flags & CC_TRACE)
		1506	{
		1507	if (!coro->cctx)
		1508	coro->cctx = cctx_new ();
		1509	else if (!(coro->cctx->flags & CC_TRACE))
		1510	croak ("cannot enable tracing on coroutine with custom stack");
		1511
		1512	coro->cctx->flags \|= CC_NOREUSE \| (flags & (CC_TRACE \| CC_TRACE_ALL));
		1513	}
		1514	else if (coro->cctx && coro->cctx->flags & CC_TRACE)
		1515	{
		1516	coro->cctx->flags &= ~(CC_TRACE \| CC_TRACE_ALL);
		1517
		1518	if (coro->flags & CF_RUNNING)
		1519	PL_runops = RUNOPS_DEFAULT;
		1520	else
		1521	coro->slot->runops = RUNOPS_DEFAULT;
		1522	}
		1523	}
		1524
1206	MODULE = Coro::State PACKAGE = Coro::State	1525	MODULE = Coro::State PACKAGE = Coro::State PREFIX = api_
1207		1526
1208	PROTOTYPES: DISABLE	1527	PROTOTYPES: DISABLE
1209		1528
1210	BOOT:	1529	BOOT:
1211	{	1530	{
1212	#ifdef USE_ITHREADS	1531	#ifdef USE_ITHREADS
1213	MUTEX_INIT (&coro_mutex);	1532	MUTEX_INIT (&coro_mutex);
1214	#endif	1533	#endif
1215	BOOT_PAGESIZE;	1534	BOOT_PAGESIZE;
1216		1535
		1536	irsgv = gv_fetchpv ("/" , GV_ADD\|GV_NOTQUAL, SVt_PV);
		1537	stdoutgv = gv_fetchpv ("STDOUT", GV_ADD\|GV_NOTQUAL, SVt_PVIO);
		1538	#if 0
		1539	orig_sigelem_get = PL_vtbl_sigelem.svt_get;
		1540	PL_vtbl_sigelem.svt_get = coro_sigelem_get;
		1541	#endif
		1542	hv_sig = coro_get_hv (aTHX_ "SIG", TRUE);
		1543	rv_diehook = SvREFCNT_inc ((SV *)gv_fetchpv ("Coro::State::diehook" , 0, SVt_PVCV));
		1544	rv_warnhook = SvREFCNT_inc ((SV *)gv_fetchpv ("Coro::State::warnhook", 0, SVt_PVCV));
		1545
1217	coro_state_stash = gv_stashpv ("Coro::State", TRUE);	1546	coro_state_stash = gv_stashpv ("Coro::State", TRUE);
1218		1547
1219	newCONSTSUB (coro_state_stash, "SAVE_DEFAV", newSViv (CORO_SAVE_DEFAV));	1548	newCONSTSUB (coro_state_stash, "CC_TRACE" , newSViv (CC_TRACE));
1220	newCONSTSUB (coro_state_stash, "SAVE_DEFSV", newSViv (CORO_SAVE_DEFSV));	1549	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));	1550	newCONSTSUB (coro_state_stash, "CC_TRACE_LINE", newSViv (CC_TRACE_LINE));
1225	newCONSTSUB (coro_state_stash, "SAVE_ALL", newSViv (CORO_SAVE_ALL));	1551	newCONSTSUB (coro_state_stash, "CC_TRACE_ALL" , newSViv (CC_TRACE_ALL));
1226		1552
1227	main_mainstack = PL_mainstack;	1553	main_mainstack = PL_mainstack;
1228	main_top_env = PL_top_env;	1554	main_top_env = PL_top_env;
1229		1555
1230	while (main_top_env->je_prev)	1556	while (main_top_env->je_prev)
1231	main_top_env = main_top_env->je_prev;	1557	main_top_env = main_top_env->je_prev;
1232		1558
1233	coroapi.ver = CORO_API_VERSION;	1559	coroapi.ver = CORO_API_VERSION;
		1560	coroapi.rev = CORO_API_REVISION;
1234	coroapi.transfer = api_transfer;	1561	coroapi.transfer = api_transfer;
1235		1562
1236	assert (("PRIO_NORMAL must be 0", !PRIO_NORMAL));	1563	assert (("PRIO_NORMAL must be 0", !PRIO_NORMAL));
1237	}	1564	}
1238		1565
1239	SV *	1566	SV *
1240	new (char *klass, ...)	1567	new (char *klass, ...)
1241	CODE:	1568	CODE:
1242	{	1569	{
1243	struct coro *coro;	1570	struct coro *coro;
		1571	MAGIC *mg;
1244	HV *hv;	1572	HV *hv;
1245	int i;	1573	int i;
1246		1574
1247	Newz (0, coro, 1, struct coro);	1575	Newz (0, coro, 1, struct coro);
1248	coro->args = newAV ();	1576	coro->args = newAV ();
1249	coro->save = CORO_SAVE_DEF;
1250	coro->flags = CF_NEW;	1577	coro->flags = CF_NEW;
1251		1578
1252	if (first) first->prev = coro;	1579	if (coro_first) coro_first->prev = coro;
1253	coro->next = first;	1580	coro->next = coro_first;
1254	first = coro;	1581	coro_first = coro;
1255		1582
1256	coro->hv = hv = newHV ();	1583	coro->hv = hv = newHV ();
1257	sv_magicext ((SV )hv, 0, PERL_MAGIC_ext, &coro_state_vtbl, (char )coro, 0)->mg_flags \|= MGf_DUP;	1584	mg = sv_magicext ((SV )hv, 0, CORO_MAGIC_type_state, &coro_state_vtbl, (char )coro, 0);
		1585	mg->mg_flags \|= MGf_DUP;
1258	RETVAL = sv_bless (newRV_noinc ((SV *)hv), gv_stashpv (klass, 1));	1586	RETVAL = sv_bless (newRV_noinc ((SV *)hv), gv_stashpv (klass, 1));
1259		1587
		1588	av_extend (coro->args, items - 1);
1260	for (i = 1; i < items; i++)	1589	for (i = 1; i < items; i++)
1261	av_push (coro->args, newSVsv (ST (i)));	1590	av_push (coro->args, newSVsv (ST (i)));
1262	}	1591	}
1263	OUTPUT:	1592	OUTPUT:
1264	RETVAL	1593	RETVAL
1265		1594
1266	int	1595	# these not obviously related functions are all rolled into the same xs
1267	save (SV *coro, int new_save = -1)	1596	# function to increase chances that they all will call transfer with the same
1268	CODE:	1597	# 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	1598	void
1285	_set_stacklevel (...)	1599	_set_stacklevel (...)
1286	ALIAS:	1600	ALIAS:
1287	Coro::State::transfer = 1	1601	Coro::State::transfer = 1
1288	Coro::schedule = 2	1602	Coro::schedule = 2
…		…
1320		1634
1321	break;	1635	break;
1322	}	1636	}
1323		1637
1324	BARRIER;	1638	BARRIER;
		1639	PUTBACK;
1325	TRANSFER (ta);	1640	TRANSFER (ta);
1326		1641	SPAGAIN; /* might be the sp of a different coroutine now */
1327	if (GIMME_V != G_VOID && ta.next != ta.prev)	1642	/* be extra careful not to ever do anything after TRANSFER */
1328	XSRETURN_YES;
1329	}	1643	}
1330		1644
1331	bool	1645	bool
1332	_destroy (SV *coro_sv)	1646	_destroy (SV *coro_sv)
1333	CODE:	1647	CODE:
…		…
1368	void	1682	void
1369	list ()	1683	list ()
1370	PPCODE:	1684	PPCODE:
1371	{	1685	{
1372	struct coro *coro;	1686	struct coro *coro;
1373	for (coro = first; coro; coro = coro->next)	1687	for (coro = coro_first; coro; coro = coro->next)
1374	if (coro->hv)	1688	if (coro->hv)
1375	XPUSHs (sv_2mortal (newRV_inc ((SV *)coro->hv)));	1689	XPUSHs (sv_2mortal (newRV_inc ((SV *)coro->hv)));
1376	}	1690	}
1377		1691
1378	void	1692	void
1379	_eval (Coro::State coro, SV *coderef)	1693	call (Coro::State coro, SV *coderef)
		1694	ALIAS:
		1695	eval = 1
1380	CODE:	1696	CODE:
1381	{	1697	{
1382	if (coro->mainstack)	1698	if (coro->mainstack)
1383	{	1699	{
1384	struct coro temp;	1700	struct coro temp;
1385	Zero (&temp, 1, struct coro);
1386	temp.save = CORO_SAVE_ALL;
1387		1701
1388	if (!(coro->flags & CF_RUNNING))	1702	if (!(coro->flags & CF_RUNNING))
1389	{	1703	{
1390	save_perl (aTHX_ &temp);	1704	save_perl (aTHX_ &temp);
1391	load_perl (aTHX_ coro);	1705	load_perl (aTHX_ coro);
…		…
1393		1707
1394	{	1708	{
1395	dSP;	1709	dSP;
1396	ENTER;	1710	ENTER;
1397	SAVETMPS;	1711	SAVETMPS;
		1712	PUTBACK;
		1713	PUSHSTACK;
1398	PUSHMARK (SP);	1714	PUSHMARK (SP);
1399	PUTBACK;	1715
		1716	if (ix)
		1717	eval_sv (coderef, 0);
		1718	else
1400	call_sv (coderef, G_KEEPERR \| G_EVAL \| G_VOID \| G_DISCARD);	1719	call_sv (coderef, G_KEEPERR \| G_EVAL \| G_VOID \| G_DISCARD);
		1720
		1721	POPSTACK;
1401	SPAGAIN;	1722	SPAGAIN;
1402	FREETMPS;	1723	FREETMPS;
1403	LEAVE;	1724	LEAVE;
1404	PUTBACK;	1725	PUTBACK;
1405	}	1726	}
…		…
1409	save_perl (aTHX_ coro);	1730	save_perl (aTHX_ coro);
1410	load_perl (aTHX_ &temp);	1731	load_perl (aTHX_ &temp);
1411	}	1732	}
1412	}	1733	}
1413	}	1734	}
1414		1735
1415	SV *	1736	SV *
1416	is_ready (Coro::State coro)	1737	is_ready (Coro::State coro)
1417	PROTOTYPE: $	1738	PROTOTYPE: $
1418	ALIAS:	1739	ALIAS:
1419	is_ready = CF_READY	1740	is_ready = CF_READY
…		…
1423	CODE:	1744	CODE:
1424	RETVAL = boolSV (coro->flags & ix);	1745	RETVAL = boolSV (coro->flags & ix);
1425	OUTPUT:	1746	OUTPUT:
1426	RETVAL	1747	RETVAL
1427		1748
		1749	void
		1750	api_trace (SV *coro, int flags = CC_TRACE \| CC_TRACE_SUB)
		1751
		1752	SV *
		1753	has_stack (Coro::State coro)
		1754	PROTOTYPE: $
		1755	CODE:
		1756	RETVAL = boolSV (!!coro->cctx);
		1757	OUTPUT:
		1758	RETVAL
		1759
		1760	int
		1761	is_traced (Coro::State coro)
		1762	PROTOTYPE: $
		1763	CODE:
		1764	RETVAL = (coro->cctx ? coro->cctx->flags : 0) & CC_TRACE_ALL;
		1765	OUTPUT:
		1766	RETVAL
		1767
1428	IV	1768	IV
1429	rss (Coro::State coro)	1769	rss (Coro::State coro)
1430	PROTOTYPE: $	1770	PROTOTYPE: $
		1771	ALIAS:
		1772	usecount = 1
1431	CODE:	1773	CODE:
1432	RETVAL = coro_rss (coro);	1774	switch (ix)
		1775	{
		1776	case 0: RETVAL = coro_rss (aTHX_ coro); break;
		1777	case 1: RETVAL = coro->usecount; break;
		1778	}
1433	OUTPUT:	1779	OUTPUT:
1434	RETVAL	1780	RETVAL
1435		1781
1436		1782
1437	MODULE = Coro::State PACKAGE = Coro	1783	MODULE = Coro::State PACKAGE = Coro
1438		1784
1439	BOOT:	1785	BOOT:
1440	{	1786	{
1441	int i;	1787	int i;
1442		1788
		1789	sv_pool_rss = coro_get_sv (aTHX_ "Coro::POOL_RSS" , TRUE);
		1790	sv_pool_size = coro_get_sv (aTHX_ "Coro::POOL_SIZE" , TRUE);
		1791	av_async_pool = coro_get_av (aTHX_ "Coro::async_pool", TRUE);
		1792
		1793	coro_current = coro_get_sv (aTHX_ "Coro::current", FALSE);
		1794	SvREADONLY_on (coro_current);
		1795
1443	coro_stash = gv_stashpv ("Coro", TRUE);	1796	coro_stash = gv_stashpv ("Coro", TRUE);
1444		1797
1445	newCONSTSUB (coro_stash, "PRIO_MAX", newSViv (PRIO_MAX));	1798	newCONSTSUB (coro_stash, "PRIO_MAX", newSViv (PRIO_MAX));
1446	newCONSTSUB (coro_stash, "PRIO_HIGH", newSViv (PRIO_HIGH));	1799	newCONSTSUB (coro_stash, "PRIO_HIGH", newSViv (PRIO_HIGH));
1447	newCONSTSUB (coro_stash, "PRIO_NORMAL", newSViv (PRIO_NORMAL));	1800	newCONSTSUB (coro_stash, "PRIO_NORMAL", newSViv (PRIO_NORMAL));
1448	newCONSTSUB (coro_stash, "PRIO_LOW", newSViv (PRIO_LOW));	1801	newCONSTSUB (coro_stash, "PRIO_LOW", newSViv (PRIO_LOW));
1449	newCONSTSUB (coro_stash, "PRIO_IDLE", newSViv (PRIO_IDLE));	1802	newCONSTSUB (coro_stash, "PRIO_IDLE", newSViv (PRIO_IDLE));
1450	newCONSTSUB (coro_stash, "PRIO_MIN", newSViv (PRIO_MIN));	1803	newCONSTSUB (coro_stash, "PRIO_MIN", newSViv (PRIO_MIN));
1451		1804
1452	coro_current = get_sv ("Coro::current", FALSE);
1453	SvREADONLY_on (coro_current);
1454
1455	for (i = PRIO_MAX - PRIO_MIN + 1; i--; )	1805	for (i = PRIO_MAX - PRIO_MIN + 1; i--; )
1456	coro_ready[i] = newAV ();	1806	coro_ready[i] = newAV ();
1457		1807
1458	{	1808	{
1459	SV *sv = perl_get_sv("Coro::API", 1);	1809	SV *sv = perl_get_sv ("Coro::API", TRUE);
		1810	perl_get_sv ("Coro::API", TRUE); /* silence 5.10 warning */
1460		1811
1461	coroapi.schedule = api_schedule;	1812	coroapi.schedule = api_schedule;
1462	coroapi.save = api_save;
1463	coroapi.cede = api_cede;	1813	coroapi.cede = api_cede;
1464	coroapi.cede_notself = api_cede_notself;	1814	coroapi.cede_notself = api_cede_notself;
1465	coroapi.ready = api_ready;	1815	coroapi.ready = api_ready;
1466	coroapi.is_ready = api_is_ready;	1816	coroapi.is_ready = api_is_ready;
1467	coroapi.nready = &coro_nready;	1817	coroapi.nready = &coro_nready;
…		…
1516	CODE:	1866	CODE:
1517	RETVAL = coro_nready;	1867	RETVAL = coro_nready;
1518	OUTPUT:	1868	OUTPUT:
1519	RETVAL	1869	RETVAL
1520		1870
		1871	void
		1872	throw (Coro::State self, SV *throw = &PL_sv_undef)
		1873	PROTOTYPE: $;$
		1874	CODE:
		1875	SvREFCNT_dec (self->throw);
		1876	self->throw = SvOK (throw) ? newSVsv (throw) : 0;
		1877
		1878	# for async_pool speedup
		1879	void
		1880	_pool_1 (SV *cb)
		1881	CODE:
		1882	{
		1883	struct coro *coro = SvSTATE (coro_current);
		1884	HV hv = (HV )SvRV (coro_current);
		1885	AV *defav = GvAV (PL_defgv);
		1886	SV *invoke = hv_delete (hv, "_invoke", sizeof ("_invoke") - 1, 0);
		1887	AV *invoke_av;
		1888	int i, len;
		1889
		1890	if (!invoke)
		1891	croak ("\3async_pool terminate\2\n");
		1892
		1893	SvREFCNT_dec (coro->saved_deffh);
		1894	coro->saved_deffh = SvREFCNT_inc ((SV *)PL_defoutgv);
		1895
		1896	hv_store (hv, "desc", sizeof ("desc") - 1,
		1897	newSVpvn ("[async_pool]", sizeof ("[async_pool]") - 1), 0);
		1898
		1899	invoke_av = (AV *)SvRV (invoke);
		1900	len = av_len (invoke_av);
		1901
		1902	sv_setsv (cb, AvARRAY (invoke_av)[0]);
		1903
		1904	if (len > 0)
		1905	{
		1906	av_fill (defav, len - 1);
		1907	for (i = 0; i < len; ++i)
		1908	av_store (defav, i, SvREFCNT_inc (AvARRAY (invoke_av)[i + 1]));
		1909	}
		1910
		1911	SvREFCNT_dec (invoke);
		1912	}
		1913
		1914	void
		1915	_pool_2 (SV *cb)
		1916	CODE:
		1917	{
		1918	struct coro *coro = SvSTATE (coro_current);
		1919
		1920	sv_setsv (cb, &PL_sv_undef);
		1921
		1922	SvREFCNT_dec ((SV )PL_defoutgv); PL_defoutgv = (GV )coro->saved_deffh;
		1923	coro->saved_deffh = 0;
		1924
		1925	if (coro_rss (aTHX_ coro) > SvIV (sv_pool_rss)
		1926	\|\| av_len (av_async_pool) + 1 >= SvIV (sv_pool_size))
		1927	croak ("\3async_pool terminate\2\n");
		1928
		1929	av_clear (GvAV (PL_defgv));
		1930	hv_store ((HV *)SvRV (coro_current), "desc", sizeof ("desc") - 1,
		1931	newSVpvn ("[async_pool idle]", sizeof ("[async_pool idle]") - 1), 0);
		1932
		1933	coro->prio = 0;
		1934
		1935	if (coro->cctx && (coro->cctx->flags & CC_TRACE))
		1936	api_trace (coro_current, 0);
		1937
		1938	av_push (av_async_pool, newSVsv (coro_current));
		1939	}
		1940
		1941
1521	MODULE = Coro::State PACKAGE = Coro::AIO	1942	MODULE = Coro::State PACKAGE = Coro::AIO
1522		1943
1523	SV *	1944	SV *
1524	_get_state ()	1945	_get_state ()
1525	CODE:	1946	CODE:

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Comparing Coro/Coro/State.xs (file contents): Revision 1.152 by root, Thu Sep 20 12:02:25 2007 UTC vs. Revision 1.215 by root, Sun Oct 14 19:34:09 2007 UTC

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Comparing Coro/Coro/State.xs (file contents):
Revision 1.152 by root, Thu Sep 20 12:02:25 2007 UTC vs.
Revision 1.215 by root, Sun Oct 14 19:34:09 2007 UTC