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

Comparing Coro/Coro/State.xs (file contents):
Revision 1.136 by root, Fri Jan 12 01:05:55 2007 UTC vs.
Revision 1.204 by root, Mon Oct 8 03:03:39 2007 UTC

…		…
1	#include "libcoro/coro.c"	1	#include "libcoro/coro.c"
		2
		3	#define PERL_NO_GET_CONTEXT
		4	#define PERL_EXT
2		5
3	#include "EXTERN.h"	6	#include "EXTERN.h"
4	#include "perl.h"	7	#include "perl.h"
5	#include "XSUB.h"	8	#include "XSUB.h"
6		9
31	#else	34	#else
32	# define PAGESIZE 0	35	# define PAGESIZE 0
33	# define BOOT_PAGESIZE (void)0	36	# define BOOT_PAGESIZE (void)0
34	#endif	37	#endif
35		38
36	#if USE_VALGRIND	39	#if CORO_USE_VALGRIND
37	# include <valgrind/valgrind.h>	40	# include <valgrind/valgrind.h>
		41	# define REGISTER_STACK(cctx,start,end) (cctx)->valgrind_id = VALGRIND_STACK_REGISTER ((start), (end))
		42	#else
		43	# define REGISTER_STACK(cctx,start,end)
38	#endif	44	#endif
39		45
40	/* the maximum number of idle cctx that will be pooled */	46	/* the maximum number of idle cctx that will be pooled */
41	#define MAX_IDLE_CCTX 8	47	#define MAX_IDLE_CCTX 8
42		48
…		…
70	/* 5.8.7 */	76	/* 5.8.7 */
71	#ifndef SvRV_set	77	#ifndef SvRV_set
72	# define SvRV_set(s,v) SvRV(s) = (v)	78	# define SvRV_set(s,v) SvRV(s) = (v)
73	#endif	79	#endif
74		80
		81	/* 5.8.8 */
		82	#ifndef GV_NOTQUAL
		83	# define GV_NOTQUAL 0
		84	#endif
		85	#ifndef newSV
		86	# define newSV(l) NEWSV(0,l)
		87	#endif
		88
75	#if !__i386 && !__x86_64 && !__powerpc && !__m68k && !__alpha && !__mips && !__sparc64	89	#if !__i386 && !__x86_64 && !__powerpc && !__m68k && !__alpha && !__mips && !__sparc64
76	# undef STACKGUARD	90	# undef CORO_STACKGUARD
77	#endif	91	#endif
78		92
79	#ifndef STACKGUARD	93	#ifndef CORO_STACKGUARD
80	# define STACKGUARD 0	94	# define CORO_STACKGUARD 0
81	#endif	95	#endif
82		96
83	/* prefer perl internal functions over our own? */	97	/* prefer perl internal functions over our own? */
84	#ifndef PREFER_PERL_FUNCTIONS	98	#ifndef CORO_PREFER_PERL_FUNCTIONS
85	# define PREFER_PERL_FUNCTIONS 0	99	# define CORO_PREFER_PERL_FUNCTIONS 0
86	#endif	100	#endif
87		101
88	/* The next macro should declare a variable stacklevel that contains and approximation	102	/* The next macros try to return the current stack pointer, in an as
89	* to the current C stack pointer. Its property is that it changes with each call	103	* portable way as possible. */
90	* and should be unique. */
91	#define dSTACKLEVEL int stacklevel	104	#define dSTACKLEVEL volatile char stacklevel
92	#define STACKLEVEL ((void *)&stacklevel)	105	#define STACKLEVEL ((void *)&stacklevel)
93		106
94	#define IN_DESTRUCT (PL_main_cv == Nullcv)	107	#define IN_DESTRUCT (PL_main_cv == Nullcv)
95		108
96	#if __GNUC__ >= 3	109	#if __GNUC__ >= 3
97	# define attribute(x) __attribute__(x)	110	# define attribute(x) __attribute__(x)
98	# define BARRIER __asm__ __volatile__ ("" : : : "memory")	111	# define BARRIER __asm__ __volatile__ ("" : : : "memory")
		112	# define expect(expr,value) __builtin_expect ((expr),(value))
99	#else	113	#else
100	# define attribute(x)	114	# define attribute(x)
101	# define BARRIER	115	# define BARRIER
		116	# define expect(expr,value) (expr)
102	#endif	117	#endif
		118
		119	#define expect_false(expr) expect ((expr) != 0, 0)
		120	#define expect_true(expr) expect ((expr) != 0, 1)
103		121
104	#define NOINLINE attribute ((noinline))	122	#define NOINLINE attribute ((noinline))
105		123
106	#include "CoroAPI.h"	124	#include "CoroAPI.h"
107		125
…		…
112	#else	130	#else
113	# define LOCK (void)0	131	# define LOCK (void)0
114	# define UNLOCK (void)0	132	# define UNLOCK (void)0
115	#endif	133	#endif
116		134
		135	#define strpair(const) const, sizeof (const) - 1
		136
117	/* helper storage struct for Coro::AIO */	137	/* helper storage struct for Coro::AIO */
118	struct io_state	138	struct io_state
119	{	139	{
120	int errorno;	140	int errorno;
121	I32 laststype;	141	I32 laststype;
122	int laststatval;	142	int laststatval;
123	Stat_t statcache;	143	Stat_t statcache;
124	};	144	};
125		145
		146	static size_t coro_stacksize = CORO_STACKSIZE;
126	static struct CoroAPI coroapi;	147	static struct CoroAPI coroapi;
127	static AV main_mainstack; / used to differentiate between $main and others */	148	static AV main_mainstack; / used to differentiate between $main and others */
		149	static JMPENV *main_top_env;
128	static HV coro_state_stash, coro_stash;	150	static HV coro_state_stash, coro_stash;
129	static SV coro_mortal; / will be freed after next transfer */	151	static SV coro_mortal; / will be freed after next transfer */
130		152
		153	static GV irsgv; / $/ */
		154	static GV stdoutgv; / STDOUT /
		155
		156	static HV hv_sig; / %SIG */
		157	static SV *sv_diehook;
		158	static SV *sv_warnhook;
		159
		160	/* async_pool helper stuff */
		161	static SV *sv_pool_rss;
		162	static SV *sv_pool_size;
		163	static AV *av_async_pool;
		164
131	static struct coro_cctx *cctx_first;	165	static struct coro_cctx *cctx_first;
132	static int cctx_count, cctx_idle;	166	static int cctx_count, cctx_idle;
		167
		168	enum {
		169	CC_MAPPED = 0x01,
		170	CC_NOREUSE = 0x02, /* throw this away after tracing */
		171	CC_TRACE = 0x04,
		172	CC_TRACE_SUB = 0x08, /* trace sub calls */
		173	CC_TRACE_LINE = 0x10, /* trace each statement */
		174	CC_TRACE_ALL = CC_TRACE_SUB \| CC_TRACE_LINE,
		175	};
133		176
134	/* this is a structure representing a c-level coroutine */	177	/* this is a structure representing a c-level coroutine */
135	typedef struct coro_cctx {	178	typedef struct coro_cctx {
136	struct coro_cctx *next;	179	struct coro_cctx *next;
137		180
138	/* the stack */	181	/* the stack */
139	void *sptr;	182	void *sptr;
140	long ssize; /* positive == mmap, otherwise malloc */	183	size_t ssize;
141		184
142	/* cpu state */	185	/* cpu state */
143	void idle_sp; / sp of top-level transfer/schedule/cede call */	186	void idle_sp; / sp of top-level transfer/schedule/cede call */
144	JMPENV idle_te; / same as idle_sp, but for top_env, TODO: remove once stable */	187	JMPENV idle_te; / same as idle_sp, but for top_env, TODO: remove once stable */
145	JMPENV *top_env;	188	JMPENV *top_env;
146	coro_context cctx;	189	coro_context cctx;
147		190
148	int inuse;
149
150	#if USE_VALGRIND	191	#if CORO_USE_VALGRIND
151	int valgrind_id;	192	int valgrind_id;
152	#endif	193	#endif
		194	unsigned char flags;
153	} coro_cctx;	195	} coro_cctx;
154		196
155	enum {	197	enum {
156	CF_RUNNING = 0x0001, /* coroutine is running */	198	CF_RUNNING = 0x0001, /* coroutine is running */
157	CF_READY = 0x0002, /* coroutine is ready */	199	CF_READY = 0x0002, /* coroutine is ready */
158	CF_NEW = 0x0004, /* has never been switched to */	200	CF_NEW = 0x0004, /* has never been switched to */
159	CF_DESTROYED = 0x0008, /* coroutine data has been freed */	201	CF_DESTROYED = 0x0008, /* coroutine data has been freed */
160	};	202	};
161		203
		204	/* the structure where most of the perl state is stored, overlaid on the cxstack */
		205	typedef struct {
		206	SV *defsv;
		207	AV *defav;
		208	SV *errsv;
		209	SV *irsgv;
		210	#define VAR(name,type) type name;
		211	# include "state.h"
		212	#undef VAR
		213	} perl_slots;
		214
		215	#define SLOT_COUNT ((sizeof (perl_slots) + sizeof (PERL_CONTEXT) - 1) / sizeof (PERL_CONTEXT))
		216
162	/* this is a structure representing a perl-level coroutine */	217	/* this is a structure representing a perl-level coroutine */
163	struct coro {	218	struct coro {
164	/* the c coroutine allocated to this perl coroutine, if any */	219	/* the c coroutine allocated to this perl coroutine, if any */
165	coro_cctx *cctx;	220	coro_cctx *cctx;
166		221
		222	/* process data */
		223	AV *mainstack;
		224	perl_slots slot; / basically the saved sp */
		225
167	/* data associated with this coroutine (initial args) */	226	AV args; / data associated with this coroutine (initial args) */
168	AV *args;	227	int refcnt; /* coroutines are refcounted, yes */
169	int refcnt;
170	int save; /* CORO_SAVE flags */
171	int flags; /* CF_ flags */	228	int flags; /* CF_ flags */
		229	HV hv; / the perl hash associated with this coro, if any */
172		230
173	/* optionally saved, might be zero */	231	/* statistics */
174	AV defav; / @_ */	232	int usecount; /* number of transfers to this coro */
175	SV defsv; / $_ */
176	SV errsv; / $@ */
177	SV irssv; / $/ */
178	SV irssv_sv; / real $/ cache */
179
180	#define VAR(name,type) type name;
181	# include "state.h"
182	#undef VAR
183		233
184	/* coro process data */	234	/* coro process data */
185	int prio;	235	int prio;
		236	SV throw; / exception to be thrown */
		237
		238	/* async_pool */
		239	SV *saved_deffh;
		240
		241	/* linked list */
		242	struct coro next, prev;
186	};	243	};
187		244
188	typedef struct coro *Coro__State;	245	typedef struct coro *Coro__State;
189	typedef struct coro *Coro__State_or_hashref;	246	typedef struct coro *Coro__State_or_hashref;
190		247
		248	/ Coro ******************************************************************/
		249
		250	#define PRIO_MAX 3
		251	#define PRIO_HIGH 1
		252	#define PRIO_NORMAL 0
		253	#define PRIO_LOW -1
		254	#define PRIO_IDLE -3
		255	#define PRIO_MIN -4
		256
		257	/* for Coro.pm */
		258	static SV *coro_current;
		259	static AV *coro_ready [PRIO_MAX-PRIO_MIN+1];
		260	static int coro_nready;
		261	static struct coro *coro_first;
		262
		263	/ lowlevel stuff ********************************************************/
		264
		265	static SV *
		266	coro_get_sv (const char *name, int create)
		267	{
		268	#if PERL_VERSION_ATLEAST (5,9,0)
		269	/* silence stupid and wrong 5.10 warning that I am unable to switch off */
		270	get_sv (name, create);
		271	#endif
		272	return get_sv (name, create);
		273	}
		274
191	static AV *	275	static AV *
		276	coro_get_av (const char *name, int create)
		277	{
		278	#if PERL_VERSION_ATLEAST (5,9,0)
		279	/* silence stupid and wrong 5.10 warning that I am unable to switch off */
		280	get_av (name, create);
		281	#endif
		282	return get_av (name, create);
		283	}
		284
		285	static HV *
		286	coro_get_hv (const char *name, int create)
		287	{
		288	#if PERL_VERSION_ATLEAST (5,9,0)
		289	/* silence stupid and wrong 5.10 warning that I am unable to switch off */
		290	get_hv (name, create);
		291	#endif
		292	return get_hv (name, create);
		293	}
		294
		295	static AV *
192	coro_clone_padlist (CV *cv)	296	coro_clone_padlist (pTHX_ CV *cv)
193	{	297	{
194	AV *padlist = CvPADLIST (cv);	298	AV *padlist = CvPADLIST (cv);
195	AV newpadlist, newpad;	299	AV newpadlist, newpad;
196		300
197	newpadlist = newAV ();	301	newpadlist = newAV ();
…		…
209		313
210	return newpadlist;	314	return newpadlist;
211	}	315	}
212		316
213	static void	317	static void
214	free_padlist (AV *padlist)	318	free_padlist (pTHX_ AV *padlist)
215	{	319	{
216	/* may be during global destruction */	320	/* may be during global destruction */
217	if (SvREFCNT (padlist))	321	if (SvREFCNT (padlist))
218	{	322	{
219	I32 i = AvFILLp (padlist);	323	I32 i = AvFILLp (padlist);
…		…
240	AV *padlist;	344	AV *padlist;
241	AV av = (AV )mg->mg_obj;	345	AV av = (AV )mg->mg_obj;
242		346
243	/* casting is fun. */	347	/* casting is fun. */
244	while (&PL_sv_undef != (SV )(padlist = (AV )av_pop (av)))	348	while (&PL_sv_undef != (SV )(padlist = (AV )av_pop (av)))
245	free_padlist (padlist);	349	free_padlist (aTHX_ padlist);
246		350
247	SvREFCNT_dec (av);	351	SvREFCNT_dec (av);
248		352
249	return 0;	353	return 0;
250	}	354	}
…		…
258	? SvMAGIC (cv)->mg_type == PERL_MAGIC_coro \	362	? SvMAGIC (cv)->mg_type == PERL_MAGIC_coro \
259	? SvMAGIC (cv) \	363	? SvMAGIC (cv) \
260	: mg_find ((SV *)cv, PERL_MAGIC_coro) \	364	: mg_find ((SV *)cv, PERL_MAGIC_coro) \
261	: 0	365	: 0
262		366
		367	static struct coro *
		368	SvSTATE_ (pTHX_ SV *coro)
		369	{
		370	HV *stash;
		371	MAGIC *mg;
		372
		373	if (SvROK (coro))
		374	coro = SvRV (coro);
		375
		376	if (expect_false (SvTYPE (coro) != SVt_PVHV))
		377	croak ("Coro::State object required");
		378
		379	stash = SvSTASH (coro);
		380	if (expect_false (stash != coro_stash && stash != coro_state_stash))
		381	{
		382	/* very slow, but rare, check */
		383	if (!sv_derived_from (sv_2mortal (newRV_inc (coro)), "Coro::State"))
		384	croak ("Coro::State object required");
		385	}
		386
		387	mg = CORO_MAGIC (coro);
		388	return (struct coro *)mg->mg_ptr;
		389	}
		390
		391	#define SvSTATE(sv) SvSTATE_ (aTHX_ (sv))
		392
263	/* the next two functions merely cache the padlists */	393	/* the next two functions merely cache the padlists */
264	static void	394	static void
265	get_padlist (CV *cv)	395	get_padlist (pTHX_ CV *cv)
266	{	396	{
267	MAGIC *mg = CORO_MAGIC (cv);	397	MAGIC *mg = CORO_MAGIC (cv);
268	AV *av;	398	AV *av;
269		399
270	if (mg && AvFILLp ((av = (AV *)mg->mg_obj)) >= 0)	400	if (expect_true (mg && AvFILLp ((av = (AV *)mg->mg_obj)) >= 0))
271	CvPADLIST (cv) = (AV *)AvARRAY (av)[AvFILLp (av)--];	401	CvPADLIST (cv) = (AV *)AvARRAY (av)[AvFILLp (av)--];
272	else	402	else
273	{	403	{
274	#if PREFER_PERL_FUNCTIONS	404	#if CORO_PREFER_PERL_FUNCTIONS
275	/* this is probably cleaner, but also slower? */	405	/* this is probably cleaner, but also slower? */
276	CV *cp = Perl_cv_clone (cv);	406	CV *cp = Perl_cv_clone (cv);
277	CvPADLIST (cv) = CvPADLIST (cp);	407	CvPADLIST (cv) = CvPADLIST (cp);
278	CvPADLIST (cp) = 0;	408	CvPADLIST (cp) = 0;
279	SvREFCNT_dec (cp);	409	SvREFCNT_dec (cp);
280	#else	410	#else
281	CvPADLIST (cv) = coro_clone_padlist (cv);	411	CvPADLIST (cv) = coro_clone_padlist (aTHX_ cv);
282	#endif	412	#endif
283	}	413	}
284	}	414	}
285		415
286	static void	416	static void
287	put_padlist (CV *cv)	417	put_padlist (pTHX_ CV *cv)
288	{	418	{
289	MAGIC *mg = CORO_MAGIC (cv);	419	MAGIC *mg = CORO_MAGIC (cv);
290	AV *av;	420	AV *av;
291		421
292	if (!mg)	422	if (expect_false (!mg))
293	{	423	{
294	sv_magic ((SV *)cv, 0, PERL_MAGIC_coro, 0, 0);	424	sv_magic ((SV *)cv, 0, PERL_MAGIC_coro, 0, 0);
295	mg = mg_find ((SV *)cv, PERL_MAGIC_coro);	425	mg = mg_find ((SV *)cv, PERL_MAGIC_coro);
296	mg->mg_virtual = &vtbl_coro;	426	mg->mg_virtual = &vtbl_coro;
297	mg->mg_obj = (SV *)newAV ();	427	mg->mg_obj = (SV *)newAV ();
298	}	428	}
299		429
300	av = (AV *)mg->mg_obj;	430	av = (AV *)mg->mg_obj;
301		431
302	if (AvFILLp (av) >= AvMAX (av))	432	if (expect_false (AvFILLp (av) >= AvMAX (av)))
303	av_extend (av, AvMAX (av) + 1);	433	av_extend (av, AvMAX (av) + 1);
304		434
305	AvARRAY (av)[++AvFILLp (av)] = (SV *)CvPADLIST (cv);	435	AvARRAY (av)[++AvFILLp (av)] = (SV *)CvPADLIST (cv);
306	}	436	}
307		437
308	#define SB do {	438	/ load & save, init *****************************************************/
309	#define SE } while (0)
310		439
311	#define REPLACE_SV(sv,val) SB SvREFCNT_dec (sv); (sv) = (val); (val) = 0; SE
312
313	static void	440	static void
314	load_perl (Coro__State c)	441	load_perl (pTHX_ Coro__State c)
315	{	442	{
		443	perl_slots *slot = c->slot;
		444	c->slot = 0;
		445
		446	PL_mainstack = c->mainstack;
		447
		448	GvSV (PL_defgv) = slot->defsv;
		449	GvAV (PL_defgv) = slot->defav;
		450	GvSV (PL_errgv) = slot->errsv;
		451	GvSV (irsgv) = slot->irsgv;
		452
316	#define VAR(name,type) PL_ ## name = c->name;	453	#define VAR(name,type) PL_ ## name = slot->name;
317	# include "state.h"	454	# include "state.h"
318	#undef VAR	455	#undef VAR
319		456
320	if (c->defav) REPLACE_SV (GvAV (PL_defgv), c->defav);	457	/hv_store (hv_sig, strpair ("__DIE__" ), SvREFCNT_inc (sv_diehook ), 0);/
321	if (c->defsv) REPLACE_SV (DEFSV , c->defsv);	458	/hv_store (hv_sig, strpair ("__WARN__"), SvREFCNT_inc (sv_warnhook), 0);/
322	if (c->errsv) REPLACE_SV (ERRSV , c->errsv);
323	if (c->irssv)
324	{
325	if (c->irssv == PL_rs \|\| sv_eq (PL_rs, c->irssv))
326	SvREFCNT_dec (c->irssv);
327	else
328	{
329	REPLACE_SV (PL_rs, c->irssv);
330	if (!c->irssv_sv) c->irssv_sv = get_sv ("/", 0);
331	sv_setsv (c->irssv_sv, PL_rs);
332	}
333	}
334		459
335	{	460	{
336	dSP;	461	dSP;
		462
337	CV *cv;	463	CV *cv;
338		464
339	/* now do the ugly restore mess */	465	/* now do the ugly restore mess */
340	while ((cv = (CV *)POPs))	466	while (expect_true (cv = (CV *)POPs))
341	{	467	{
342	put_padlist (cv); /* mark this padlist as available */	468	put_padlist (aTHX_ cv); /* mark this padlist as available */
343	CvDEPTH (cv) = PTR2IV (POPs);	469	CvDEPTH (cv) = PTR2IV (POPs);
344	CvPADLIST (cv) = (AV *)POPs;	470	CvPADLIST (cv) = (AV *)POPs;
345	}	471	}
346		472
347	PUTBACK;	473	PUTBACK;
348	}	474	}
349	}	475	}
350		476
351	static void	477	static void
352	save_perl (Coro__State c)	478	save_perl (pTHX_ Coro__State c)
353	{	479	{
354	{	480	{
355	dSP;	481	dSP;
356	I32 cxix = cxstack_ix;	482	I32 cxix = cxstack_ix;
357	PERL_CONTEXT *ccstk = cxstack;	483	PERL_CONTEXT *ccstk = cxstack;
…		…
360	/*	486	/*
361	* the worst thing you can imagine happens first - we have to save	487	* the worst thing you can imagine happens first - we have to save
362	* (and reinitialize) all cv's in the whole callchain :(	488	* (and reinitialize) all cv's in the whole callchain :(
363	*/	489	*/
364		490
365	EXTEND (SP, 3 + 1);
366	PUSHs (Nullsv);	491	XPUSHs (Nullsv);
367	/* this loop was inspired by pp_caller */	492	/* this loop was inspired by pp_caller */
368	for (;;)	493	for (;;)
369	{	494	{
370	while (cxix >= 0)	495	while (expect_true (cxix >= 0))
371	{	496	{
372	PERL_CONTEXT *cx = &ccstk[cxix--];	497	PERL_CONTEXT *cx = &ccstk[cxix--];
373		498
374	if (CxTYPE (cx) == CXt_SUB)	499	if (expect_true (CxTYPE (cx) == CXt_SUB \|\| CxTYPE (cx) == CXt_FORMAT))
375	{	500	{
376	CV *cv = cx->blk_sub.cv;	501	CV *cv = cx->blk_sub.cv;
377		502
378	if (CvDEPTH (cv))	503	if (expect_true (CvDEPTH (cv)))
379	{	504	{
380	EXTEND (SP, 3);	505	EXTEND (SP, 3);
381	PUSHs ((SV *)CvPADLIST (cv));	506	PUSHs ((SV *)CvPADLIST (cv));
382	PUSHs (INT2PTR (SV *, CvDEPTH (cv)));	507	PUSHs (INT2PTR (SV *, CvDEPTH (cv)));
383	PUSHs ((SV *)cv);	508	PUSHs ((SV *)cv);
384		509
385	CvDEPTH (cv) = 0;	510	CvDEPTH (cv) = 0;
386	get_padlist (cv);	511	get_padlist (aTHX_ cv);
387	}	512	}
388	}	513	}
389	}	514	}
390		515
391	if (top_si->si_type == PERLSI_MAIN)	516	if (expect_true (top_si->si_type == PERLSI_MAIN))
392	break;	517	break;
393		518
394	top_si = top_si->si_prev;	519	top_si = top_si->si_prev;
395	ccstk = top_si->si_cxstack;	520	ccstk = top_si->si_cxstack;
396	cxix = top_si->si_cxix;	521	cxix = top_si->si_cxix;
397	}	522	}
398		523
399	PUTBACK;	524	PUTBACK;
400	}	525	}
401		526
402	c->defav = c->save & CORO_SAVE_DEFAV ? (AV *)SvREFCNT_inc (GvAV (PL_defgv)) : 0;	527	/* allocate some space on the context stack for our purposes */
403	c->defsv = c->save & CORO_SAVE_DEFSV ? SvREFCNT_inc (DEFSV) : 0;	528	/* we manually unroll here, as usually 2 slots is enough */
404	c->errsv = c->save & CORO_SAVE_ERRSV ? SvREFCNT_inc (ERRSV) : 0;	529	if (SLOT_COUNT >= 1) CXINC;
405	c->irssv = c->save & CORO_SAVE_IRSSV ? SvREFCNT_inc (PL_rs) : 0;	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 */
406		538
		539	c->mainstack = PL_mainstack;
		540
		541	{
		542	perl_slots slot = c->slot = (perl_slots )(cxstack + cxstack_ix + 1);
		543
		544	slot->defav = GvAV (PL_defgv);
		545	slot->defsv = DEFSV;
		546	slot->errsv = ERRSV;
		547	slot->irsgv = GvSV (irsgv);
		548
407	#define VAR(name,type)c->name = PL_ ## name;	549	#define VAR(name,type) slot->name = PL_ ## name;
408	# include "state.h"	550	# include "state.h"
409	#undef VAR	551	#undef VAR
		552	}
410	}	553	}
411		554
412	/*	555	/*
413	* allocate various perl stacks. This is an exact copy	556	* allocate various perl stacks. This is an exact copy
414	* of perl.c:init_stacks, except that it uses less memory	557	* of perl.c:init_stacks, except that it uses less memory
415	* on the (sometimes correct) assumption that coroutines do	558	* on the (sometimes correct) assumption that coroutines do
416	* not usually need a lot of stackspace.	559	* not usually need a lot of stackspace.
417	*/	560	*/
418	#if PREFER_PERL_FUNCTIONS	561	#if CORO_PREFER_PERL_FUNCTIONS
419	# define coro_init_stacks init_stacks	562	# define coro_init_stacks init_stacks
420	#else	563	#else
421	static void	564	static void
422	coro_init_stacks ()	565	coro_init_stacks (pTHX)
423	{	566	{
424	PL_curstackinfo = new_stackinfo(128, 1024/sizeof(PERL_CONTEXT));	567	PL_curstackinfo = new_stackinfo(32, 8);
425	PL_curstackinfo->si_type = PERLSI_MAIN;	568	PL_curstackinfo->si_type = PERLSI_MAIN;
426	PL_curstack = PL_curstackinfo->si_stack;	569	PL_curstack = PL_curstackinfo->si_stack;
427	PL_mainstack = PL_curstack; /* remember in case we switch stacks */	570	PL_mainstack = PL_curstack; /* remember in case we switch stacks */
428		571
429	PL_stack_base = AvARRAY(PL_curstack);	572	PL_stack_base = AvARRAY(PL_curstack);
430	PL_stack_sp = PL_stack_base;	573	PL_stack_sp = PL_stack_base;
431	PL_stack_max = PL_stack_base + AvMAX(PL_curstack);	574	PL_stack_max = PL_stack_base + AvMAX(PL_curstack);
432		575
433	New(50,PL_tmps_stack,128,SV*);	576	New(50,PL_tmps_stack,32,SV*);
434	PL_tmps_floor = -1;	577	PL_tmps_floor = -1;
435	PL_tmps_ix = -1;	578	PL_tmps_ix = -1;
436	PL_tmps_max = 128;	579	PL_tmps_max = 32;
437		580
438	New(54,PL_markstack,32,I32);	581	New(54,PL_markstack,16,I32);
439	PL_markstack_ptr = PL_markstack;	582	PL_markstack_ptr = PL_markstack;
440	PL_markstack_max = PL_markstack + 32;	583	PL_markstack_max = PL_markstack + 16;
441		584
442	#ifdef SET_MARK_OFFSET	585	#ifdef SET_MARK_OFFSET
443	SET_MARK_OFFSET;	586	SET_MARK_OFFSET;
444	#endif	587	#endif
445		588
446	New(54,PL_scopestack,32,I32);	589	New(54,PL_scopestack,8,I32);
447	PL_scopestack_ix = 0;	590	PL_scopestack_ix = 0;
448	PL_scopestack_max = 32;	591	PL_scopestack_max = 8;
449		592
450	New(54,PL_savestack,64,ANY);	593	New(54,PL_savestack,24,ANY);
451	PL_savestack_ix = 0;	594	PL_savestack_ix = 0;
452	PL_savestack_max = 64;	595	PL_savestack_max = 24;
453		596
454	#if !PERL_VERSION_ATLEAST (5,9,0)	597	#if !PERL_VERSION_ATLEAST (5,9,0)
455	New(54,PL_retstack,16,OP*);	598	New(54,PL_retstack,4,OP*);
456	PL_retstack_ix = 0;	599	PL_retstack_ix = 0;
457	PL_retstack_max = 16;	600	PL_retstack_max = 4;
458	#endif	601	#endif
459	}	602	}
460	#endif	603	#endif
461		604
462	/*	605	/*
463	* destroy the stacks, the callchain etc...	606	* destroy the stacks, the callchain etc...
464	*/	607	*/
465	static void	608	static void
466	coro_destroy_stacks ()	609	coro_destroy_stacks (pTHX)
467	{	610	{
468	if (!IN_DESTRUCT)
469	{
470	/* restore all saved variables and stuff */
471	LEAVE_SCOPE (0);
472	assert (PL_tmps_floor == -1);
473
474	/* free all temporaries */
475	FREETMPS;
476	assert (PL_tmps_ix == -1);
477
478	/* unwind all extra stacks */
479	POPSTACK_TO (PL_mainstack);
480
481	/* unwind main stack */
482	dounwind (-1);
483	}
484
485	while (PL_curstackinfo->si_next)	611	while (PL_curstackinfo->si_next)
486	PL_curstackinfo = PL_curstackinfo->si_next;	612	PL_curstackinfo = PL_curstackinfo->si_next;
487		613
488	while (PL_curstackinfo)	614	while (PL_curstackinfo)
489	{	615	{
…		…
504	#if !PERL_VERSION_ATLEAST (5,9,0)	630	#if !PERL_VERSION_ATLEAST (5,9,0)
505	Safefree (PL_retstack);	631	Safefree (PL_retstack);
506	#endif	632	#endif
507	}	633	}
508		634
509	static void	635	static size_t
510	setup_coro (struct coro *coro)	636	coro_rss (pTHX_ struct coro *coro)
		637	{
		638	size_t rss = sizeof (*coro);
		639
		640	if (coro->mainstack)
		641	{
		642	perl_slots tmp_slot;
		643	perl_slots *slot;
		644
		645	if (coro->flags & CF_RUNNING)
		646	{
		647	slot = &tmp_slot;
		648
		649	#define VAR(name,type) slot->name = PL_ ## name;
		650	# include "state.h"
		651	#undef VAR
		652	}
		653	else
		654	slot = coro->slot;
		655
		656	rss += sizeof (slot->curstackinfo);
		657	rss += (slot->curstackinfo->si_cxmax + 1) * sizeof (PERL_CONTEXT);
		658	rss += sizeof (SV) + sizeof (struct xpvav) + (1 + AvMAX (slot->curstack)) * sizeof (SV *);
		659	rss += slot->tmps_max * sizeof (SV *);
		660	rss += (slot->markstack_max - slot->markstack_ptr) * sizeof (I32);
		661	rss += slot->scopestack_max * sizeof (I32);
		662	rss += slot->savestack_max * sizeof (ANY);
		663
		664	#if !PERL_VERSION_ATLEAST (5,9,0)
		665	rss += slot->retstack_max * sizeof (OP *);
		666	#endif
		667	}
		668
		669	return rss;
		670	}
		671
		672	/ coroutine stack handling **********************************************/
		673
		674	static void
		675	coro_setup (pTHX_ struct coro *coro)
511	{	676	{
512	/*	677	/*
513	* emulate part of the perl startup here.	678	* emulate part of the perl startup here.
514	*/	679	*/
515
516	coro_init_stacks ();	680	coro_init_stacks (aTHX);
517		681
		682	PL_runops = RUNOPS_DEFAULT;
518	PL_curcop = &PL_compiling;	683	PL_curcop = &PL_compiling;
519	PL_in_eval = EVAL_NULL;	684	PL_in_eval = EVAL_NULL;
		685	PL_comppad = 0;
520	PL_curpm = 0;	686	PL_curpm = 0;
		687	PL_curpad = 0;
521	PL_localizing = 0;	688	PL_localizing = 0;
522	PL_dirty = 0;	689	PL_dirty = 0;
523	PL_restartop = 0;	690	PL_restartop = 0;
		691	PL_diehook = 0; hv_store (hv_sig, strpair ("__DIE__" ), SvREFCNT_inc (sv_diehook ), 0);
		692	PL_warnhook = 0; hv_store (hv_sig, strpair ("__WARN__"), SvREFCNT_inc (sv_warnhook), 0);
		693
		694	GvSV (PL_defgv) = newSV (0);
		695	GvAV (PL_defgv) = coro->args; coro->args = 0;
		696	GvSV (PL_errgv) = newSV (0);
		697	GvSV (irsgv) = newSVpvn ("\n", 1); sv_magic (GvSV (irsgv), (SV *)irsgv, PERL_MAGIC_sv, "/", 0);
		698	PL_rs = newSVsv (GvSV (irsgv));
		699	PL_defoutgv = (GV *)SvREFCNT_inc (stdoutgv);
524		700
525	{	701	{
526	dSP;	702	dSP;
527	LOGOP myop;	703	LOGOP myop;
528		704
529	SvREFCNT_dec (GvAV (PL_defgv));
530	GvAV (PL_defgv) = coro->args; coro->args = 0;
531
532	Zero (&myop, 1, LOGOP);	705	Zero (&myop, 1, LOGOP);
533	myop.op_next = Nullop;	706	myop.op_next = Nullop;
534	myop.op_flags = OPf_WANT_VOID;	707	myop.op_flags = OPf_WANT_VOID;
535		708
536	PUSHMARK (SP);	709	PUSHMARK (SP);
537	XPUSHs ((SV *)get_cv ("Coro::State::_coro_init", FALSE));	710	XPUSHs (sv_2mortal (av_shift (GvAV (PL_defgv))));
538	PUTBACK;	711	PUTBACK;
539	PL_op = (OP *)&myop;	712	PL_op = (OP *)&myop;
540	PL_op = PL_ppaddr[OP_ENTERSUB](aTHX);	713	PL_op = PL_ppaddr[OP_ENTERSUB](aTHX);
541	SPAGAIN;	714	SPAGAIN;
542	}	715	}
543		716
544	ENTER; /* necessary e.g. for dounwind */	717	ENTER; /* necessary e.g. for dounwind and to balance the xsub-entersub */
545	}	718	}
546		719
547	static void	720	static void
		721	coro_destroy (pTHX_ struct coro *coro)
		722	{
		723	if (!IN_DESTRUCT)
		724	{
		725	/* restore all saved variables and stuff */
		726	LEAVE_SCOPE (0);
		727	assert (PL_tmps_floor == -1);
		728
		729	/* free all temporaries */
		730	FREETMPS;
		731	assert (PL_tmps_ix == -1);
		732
		733	/* unwind all extra stacks */
		734	POPSTACK_TO (PL_mainstack);
		735
		736	/* unwind main stack */
		737	dounwind (-1);
		738	}
		739
		740	SvREFCNT_dec (GvSV (PL_defgv));
		741	SvREFCNT_dec (GvAV (PL_defgv));
		742	SvREFCNT_dec (GvSV (PL_errgv));
		743	SvREFCNT_dec (PL_defoutgv);
		744	SvREFCNT_dec (PL_rs);
		745	SvREFCNT_dec (GvSV (irsgv));
		746
		747	SvREFCNT_dec (PL_diehook);
		748	SvREFCNT_dec (PL_warnhook);
		749
		750	SvREFCNT_dec (coro->saved_deffh);
		751	SvREFCNT_dec (coro->throw);
		752
		753	coro_destroy_stacks (aTHX);
		754	}
		755
		756	static void
548	free_coro_mortal ()	757	free_coro_mortal (pTHX)
549	{	758	{
550	if (coro_mortal)	759	if (expect_true (coro_mortal))
551	{	760	{
552	SvREFCNT_dec (coro_mortal);	761	SvREFCNT_dec (coro_mortal);
553	coro_mortal = 0;	762	coro_mortal = 0;
554	}	763	}
555	}	764	}
556		765
		766	static int
		767	runops_trace (pTHX)
		768	{
		769	COP *oldcop = 0;
		770	int oldcxix = -2;
		771	struct coro coro = SvSTATE (coro_current); / trace cctx is tied to specific coro */
		772	coro_cctx *cctx = coro->cctx;
		773
		774	while ((PL_op = CALL_FPTR (PL_op->op_ppaddr) (aTHX)))
		775	{
		776	PERL_ASYNC_CHECK ();
		777
		778	if (cctx->flags & CC_TRACE_ALL)
		779	{
		780	if (PL_op->op_type == OP_LEAVESUB && cctx->flags & CC_TRACE_SUB)
		781	{
		782	PERL_CONTEXT *cx = &cxstack[cxstack_ix];
		783	SV bot, top;
		784	AV av = newAV (); / return values */
		785	SV **cb;
		786	dSP;
		787
		788	GV *gv = CvGV (cx->blk_sub.cv);
		789	SV *fullname = sv_2mortal (newSV (0));
		790	if (isGV (gv))
		791	gv_efullname3 (fullname, gv, 0);
		792
		793	bot = PL_stack_base + cx->blk_oldsp + 1;
		794	top = cx->blk_gimme == G_ARRAY ? SP + 1
		795	: cx->blk_gimme == G_SCALAR ? bot + 1
		796	: bot;
		797
		798	av_extend (av, top - bot);
		799	while (bot < top)
		800	av_push (av, SvREFCNT_inc (*bot++));
		801
		802	PL_runops = RUNOPS_DEFAULT;
		803	ENTER;
		804	SAVETMPS;
		805	EXTEND (SP, 3);
		806	PUSHMARK (SP);
		807	PUSHs (&PL_sv_no);
		808	PUSHs (fullname);
		809	PUSHs (sv_2mortal (newRV_noinc ((SV *)av)));
		810	PUTBACK;
		811	cb = hv_fetch ((HV *)SvRV (coro_current), strpair ("_trace_sub_cb"), 0);
		812	if (cb) call_sv (*cb, G_KEEPERR \| G_EVAL \| G_VOID \| G_DISCARD);
		813	SPAGAIN;
		814	FREETMPS;
		815	LEAVE;
		816	PL_runops = runops_trace;
		817	}
		818
		819	if (oldcop != PL_curcop)
		820	{
		821	oldcop = PL_curcop;
		822
		823	if (PL_curcop != &PL_compiling)
		824	{
		825	SV **cb;
		826
		827	if (oldcxix != cxstack_ix && cctx->flags & CC_TRACE_SUB)
		828	{
		829	PERL_CONTEXT *cx = &cxstack[cxstack_ix];
		830
		831	if (CxTYPE (cx) == CXt_SUB && oldcxix < cxstack_ix)
		832	{
		833	runops_proc_t old_runops = PL_runops;
		834	dSP;
		835	GV *gv = CvGV (cx->blk_sub.cv);
		836	SV *fullname = sv_2mortal (newSV (0));
		837
		838	if (isGV (gv))
		839	gv_efullname3 (fullname, gv, 0);
		840
		841	PL_runops = RUNOPS_DEFAULT;
		842	ENTER;
		843	SAVETMPS;
		844	EXTEND (SP, 3);
		845	PUSHMARK (SP);
		846	PUSHs (&PL_sv_yes);
		847	PUSHs (fullname);
		848	PUSHs (cx->blk_sub.hasargs ? sv_2mortal (newRV_inc ((SV *)cx->blk_sub.argarray)) : &PL_sv_undef);
		849	PUTBACK;
		850	cb = hv_fetch ((HV *)SvRV (coro_current), strpair ("_trace_sub_cb"), 0);
		851	if (cb) call_sv (*cb, G_KEEPERR \| G_EVAL \| G_VOID \| G_DISCARD);
		852	SPAGAIN;
		853	FREETMPS;
		854	LEAVE;
		855	PL_runops = runops_trace;
		856	}
		857
		858	oldcxix = cxstack_ix;
		859	}
		860
		861	if (cctx->flags & CC_TRACE_LINE)
		862	{
		863	dSP;
		864
		865	PL_runops = RUNOPS_DEFAULT;
		866	ENTER;
		867	SAVETMPS;
		868	EXTEND (SP, 3);
		869	PL_runops = RUNOPS_DEFAULT;
		870	PUSHMARK (SP);
		871	PUSHs (sv_2mortal (newSVpv (OutCopFILE (oldcop), 0)));
		872	PUSHs (sv_2mortal (newSViv (CopLINE (oldcop))));
		873	PUTBACK;
		874	cb = hv_fetch ((HV *)SvRV (coro_current), strpair ("_trace_line_cb"), 0);
		875	if (cb) call_sv (*cb, G_KEEPERR \| G_EVAL \| G_VOID \| G_DISCARD);
		876	SPAGAIN;
		877	FREETMPS;
		878	LEAVE;
		879	PL_runops = runops_trace;
		880	}
		881	}
		882	}
		883	}
		884	}
		885
		886	TAINT_NOT;
		887	return 0;
		888	}
		889
557	/* inject a fake call to Coro::State::_cctx_init into the execution */	890	/* inject a fake call to Coro::State::_cctx_init into the execution */
		891	/* _cctx_init should be careful, as it could be called at almost any time */
		892	/* during execution of a perl program */
558	static void NOINLINE	893	static void NOINLINE
559	prepare_cctx (coro_cctx *cctx)	894	cctx_prepare (pTHX_ coro_cctx *cctx)
560	{	895	{
561	dSP;	896	dSP;
562	LOGOP myop;	897	LOGOP myop;
		898
		899	PL_top_env = &PL_start_env;
		900
		901	if (cctx->flags & CC_TRACE)
		902	PL_runops = runops_trace;
563		903
564	Zero (&myop, 1, LOGOP);	904	Zero (&myop, 1, LOGOP);
565	myop.op_next = PL_op;	905	myop.op_next = PL_op;
566	myop.op_flags = OPf_WANT_VOID \| OPf_STACKED;	906	myop.op_flags = OPf_WANT_VOID \| OPf_STACKED;
567		907
…		…
573	PL_op = (OP *)&myop;	913	PL_op = (OP *)&myop;
574	PL_op = PL_ppaddr[OP_ENTERSUB](aTHX);	914	PL_op = PL_ppaddr[OP_ENTERSUB](aTHX);
575	SPAGAIN;	915	SPAGAIN;
576	}	916	}
577		917
		918	/*
		919	* this is a _very_ stripped down perl interpreter ;)
		920	*/
578	static void	921	static void
579	coro_run (void *arg)	922	cctx_run (void *arg)
580	{	923	{
		924	dTHX;
		925
581	/* coro_run is the alternative tail of transfer(), so unlock here. */	926	/* cctx_run is the alternative tail of transfer(), so unlock here. */
582	UNLOCK;	927	UNLOCK;
583		928
584	/*	929	/* we now skip the entersub that lead to transfer() */
585	* this is a _very_ stripped down perl interpreter ;)	930	PL_op = PL_op->op_next;
586	*/
587	PL_top_env = &PL_start_env;
588		931
589	/* inject call to cctx_init */	932	/* inject a fake subroutine call to cctx_init */
590	prepare_cctx ((coro_cctx *)arg);	933	cctx_prepare (aTHX_ (coro_cctx *)arg);
591		934
592	/* somebody will hit me for both perl_run and PL_restartop */	935	/* somebody or something will hit me for both perl_run and PL_restartop */
593	PL_restartop = PL_op;	936	PL_restartop = PL_op;
594	perl_run (PL_curinterp);	937	perl_run (PL_curinterp);
595		938
596	fputs ("FATAL: C coroutine fell over the edge of the world, aborting. Did you call exit in a coroutine?\n", stderr);	939	/*
597	abort ();	940	* If perl-run returns we assume exit() was being called or the coro
		941	* fell off the end, which seems to be the only valid (non-bug)
		942	* reason for perl_run to return. We try to exit by jumping to the
		943	* bootstrap-time "top" top_env, as we cannot restore the "main"
		944	* coroutine as Coro has no such concept
		945	*/
		946	PL_top_env = main_top_env;
		947	JMPENV_JUMP (2); /* I do not feel well about the hardcoded 2 at all */
598	}	948	}
599		949
600	static coro_cctx *	950	static coro_cctx *
601	cctx_new ()	951	cctx_new ()
602	{	952	{
603	coro_cctx *cctx;	953	coro_cctx *cctx;
		954	void *stack_start;
		955	size_t stack_size;
604		956
605	++cctx_count;	957	++cctx_count;
606		958
607	Newz (0, cctx, 1, coro_cctx);	959	Newz (0, cctx, 1, coro_cctx);
608		960
609	#if HAVE_MMAP	961	#if HAVE_MMAP
610
611	cctx->ssize = ((STACKSIZE * sizeof (long) + PAGESIZE - 1) / PAGESIZE + STACKGUARD) * PAGESIZE;	962	cctx->ssize = ((coro_stacksize * sizeof (long) + PAGESIZE - 1) / PAGESIZE + CORO_STACKGUARD) * PAGESIZE;
612	/* mmap supposedly does allocate-on-write for us */	963	/* mmap supposedly does allocate-on-write for us */
613	cctx->sptr = mmap (0, cctx->ssize, PROT_EXEC\|PROT_READ\|PROT_WRITE, MAP_PRIVATE\|MAP_ANONYMOUS, 0, 0);	964	cctx->sptr = mmap (0, cctx->ssize, PROT_EXEC\|PROT_READ\|PROT_WRITE, MAP_PRIVATE\|MAP_ANONYMOUS, 0, 0);
614		965
615	if (cctx->sptr == (void *)-1)	966	if (cctx->sptr != (void *)-1)
616	{
617	perror ("FATAL: unable to mmap stack for coroutine");
618	_exit (EXIT_FAILURE);
619	}	967	{
620
621	# if STACKGUARD	968	# if CORO_STACKGUARD
622	mprotect (cctx->sptr, STACKGUARD * PAGESIZE, PROT_NONE);	969	mprotect (cctx->sptr, CORO_STACKGUARD * PAGESIZE, PROT_NONE);
623	# endif	970	# endif
		971	stack_start = CORO_STACKGUARD * PAGESIZE + (char *)cctx->sptr;
		972	stack_size = cctx->ssize - CORO_STACKGUARD * PAGESIZE;
		973	cctx->flags \|= CC_MAPPED;
		974	}
		975	else
		976	#endif
		977	{
		978	cctx->ssize = coro_stacksize * (long)sizeof (long);
		979	New (0, cctx->sptr, coro_stacksize, long);
624		980
625	#else
626
627	cctx->ssize = STACKSIZE * (long)sizeof (long);
628	New (0, cctx->sptr, STACKSIZE, long);
629
630	if (!cctx->sptr)	981	if (!cctx->sptr)
631	{	982	{
632	perror ("FATAL: unable to malloc stack for coroutine");	983	perror ("FATAL: unable to allocate stack for coroutine");
633	_exit (EXIT_FAILURE);	984	_exit (EXIT_FAILURE);
634	}	985	}
635		986
636	#endif	987	stack_start = cctx->sptr;
		988	stack_size = cctx->ssize;
		989	}
637		990
638	#if USE_VALGRIND	991	REGISTER_STACK (cctx, (char )stack_start, (char )stack_start + stack_size);
639	cctx->valgrind_id = VALGRIND_STACK_REGISTER (	992	coro_create (&cctx->cctx, cctx_run, (void *)cctx, stack_start, stack_size);
640	STACKGUARD * PAGESIZE + (char *)cctx->sptr,
641	cctx->ssize + (char *)cctx->sptr
642	);
643	#endif
644
645	coro_create (&cctx->cctx, coro_run, (void *)cctx, cctx->sptr, cctx->ssize);
646		993
647	return cctx;	994	return cctx;
648	}	995	}
649		996
650	static void	997	static void
…		…
653	if (!cctx)	1000	if (!cctx)
654	return;	1001	return;
655		1002
656	--cctx_count;	1003	--cctx_count;
657		1004
658	#if USE_VALGRIND	1005	#if CORO_USE_VALGRIND
659	VALGRIND_STACK_DEREGISTER (cctx->valgrind_id);	1006	VALGRIND_STACK_DEREGISTER (cctx->valgrind_id);
660	#endif	1007	#endif
661		1008
662	#if HAVE_MMAP	1009	#if HAVE_MMAP
		1010	if (cctx->flags & CC_MAPPED)
663	munmap (cctx->sptr, cctx->ssize);	1011	munmap (cctx->sptr, cctx->ssize);
664	#else	1012	else
		1013	#endif
665	Safefree (cctx->sptr);	1014	Safefree (cctx->sptr);
666	#endif
667		1015
668	Safefree (cctx);	1016	Safefree (cctx);
669	}	1017	}
670		1018
		1019	/* wether this cctx should be destructed */
		1020	#define CCTX_EXPIRED(cctx) ((cctx)->ssize < coro_stacksize \|\| ((cctx)->flags & CC_NOREUSE))
		1021
671	static coro_cctx *	1022	static coro_cctx *
672	cctx_get ()	1023	cctx_get (pTHX)
673	{	1024	{
674	coro_cctx *cctx;	1025	while (expect_true (cctx_first))
675
676	if (cctx_first)
677	{	1026	{
678	cctx = cctx_first;	1027	coro_cctx *cctx = cctx_first;
679	cctx_first = cctx->next;	1028	cctx_first = cctx->next;
680	--cctx_idle;	1029	--cctx_idle;
681	}	1030
682	else	1031	if (expect_true (!CCTX_EXPIRED (cctx)))
683	{	1032	return cctx;
684	cctx = cctx_new ();	1033
685	PL_op = PL_op->op_next;	1034	cctx_destroy (cctx);
686	}	1035	}
687		1036
688	return cctx;	1037	return cctx_new ();
689	}	1038	}
690		1039
691	static void	1040	static void
692	cctx_put (coro_cctx *cctx)	1041	cctx_put (coro_cctx *cctx)
693	{	1042	{
694	/* free another cctx if overlimit */	1043	/* free another cctx if overlimit */
695	if (cctx_idle >= MAX_IDLE_CCTX)	1044	if (expect_false (cctx_idle >= MAX_IDLE_CCTX))
696	{	1045	{
697	coro_cctx *first = cctx_first;	1046	coro_cctx *first = cctx_first;
698	cctx_first = first->next;	1047	cctx_first = first->next;
699	--cctx_idle;	1048	--cctx_idle;
700		1049
701	assert (!first->inuse);
702	cctx_destroy (first);	1050	cctx_destroy (first);
703	}	1051	}
704		1052
705	++cctx_idle;	1053	++cctx_idle;
706	cctx->next = cctx_first;	1054	cctx->next = cctx_first;
707	cctx_first = cctx;	1055	cctx_first = cctx;
708	}	1056	}
709		1057
710	/* never call directly, always through the coro_state_transfer global variable */	1058	/ coroutine switching ***************************************************/
		1059
		1060	static void
		1061	transfer_check (pTHX_ struct coro prev, struct coro next)
		1062	{
		1063	if (expect_true (prev != next))
		1064	{
		1065	if (expect_false (!(prev->flags & (CF_RUNNING \| CF_NEW))))
		1066	croak ("Coro::State::transfer called with non-running/new prev Coro::State, but can only transfer from running or new states");
		1067
		1068	if (expect_false (next->flags & CF_RUNNING))
		1069	croak ("Coro::State::transfer called with running next Coro::State, but can only transfer to inactive states");
		1070
		1071	if (expect_false (next->flags & CF_DESTROYED))
		1072	croak ("Coro::State::transfer called with destroyed next Coro::State, but can only transfer to inactive states");
		1073
		1074	if (
		1075	#if PERL_VERSION_ATLEAST (5,9,0)
		1076	expect_false (PL_parser)
		1077	#else
		1078	expect_false (PL_lex_state != LEX_NOTPARSING)
		1079	#endif
		1080	)
		1081	croak ("Coro::State::transfer called while parsing, but this is not supported");
		1082	}
		1083	}
		1084
		1085	/* always use the TRANSFER macro */
711	static void NOINLINE	1086	static void NOINLINE
712	transfer (struct coro prev, struct coro next)	1087	transfer (pTHX_ struct coro prev, struct coro next)
713	{	1088	{
714	dSTACKLEVEL;	1089	dSTACKLEVEL;
715		1090
716	/* sometimes transfer is only called to set idle_sp */	1091	/* sometimes transfer is only called to set idle_sp */
717	if (!next)	1092	if (expect_false (!next))
718	{	1093	{
719	((coro_cctx *)prev)->idle_sp = STACKLEVEL;	1094	((coro_cctx *)prev)->idle_sp = STACKLEVEL;
720	assert (((coro_cctx )prev)->idle_te = PL_top_env); / just for the side-effect when asserts are enabled */	1095	assert (((coro_cctx )prev)->idle_te = PL_top_env); / just for the side-effect when asserts are enabled */
721	}	1096	}
722	else if (prev != next)	1097	else if (expect_true (prev != next))
723	{	1098	{
724	coro_cctx *prev__cctx;	1099	coro_cctx *prev__cctx;
725		1100
726	if (prev->flags & CF_NEW)	1101	if (expect_false (prev->flags & CF_NEW))
727	{	1102	{
728	/* create a new empty context */	1103	/* create a new empty context */
729	Newz (0, prev->cctx, 1, coro_cctx);	1104	Newz (0, prev->cctx, 1, coro_cctx);
730	prev->cctx->inuse = 1;
731	prev->flags &= ~CF_NEW;	1105	prev->flags &= ~CF_NEW;
732	prev->flags \|= CF_RUNNING;	1106	prev->flags \|= CF_RUNNING;
733	}	1107	}
734		1108
735	/TODO: must not croak here /
736	if (!prev->flags & CF_RUNNING)
737	croak ("Coro::State::transfer called with non-running prev Coro::State, but can only transfer from running states");
738
739	if (next->flags & CF_RUNNING)
740	croak ("Coro::State::transfer called with running next Coro::State, but can only transfer to inactive states");
741
742	if (next->flags & CF_DESTROYED)
743	croak ("Coro::State::transfer called with destroyed next Coro::State, but can only transfer to inactive states");
744
745	prev->flags &= ~CF_RUNNING;	1109	prev->flags &= ~CF_RUNNING;
746	next->flags \|= CF_RUNNING;	1110	next->flags \|= CF_RUNNING;
747		1111
748	LOCK;	1112	LOCK;
749		1113
750	if (next->flags & CF_NEW)	1114	if (expect_false (next->flags & CF_NEW))
751	{	1115	{
752	/* need to start coroutine */	1116	/* need to start coroutine */
753	next->flags &= ~CF_NEW;	1117	next->flags &= ~CF_NEW;
754	/* first get rid of the old state */	1118	/* first get rid of the old state */
755	save_perl (prev);	1119	save_perl (aTHX_ prev);
756	/* setup coroutine call */	1120	/* setup coroutine call */
757	setup_coro (next);	1121	coro_setup (aTHX_ next);
758	/* need a new stack */
759	assert (!next->cctx);
760	}	1122	}
761	else	1123	else
762	{	1124	{
763	/* coroutine already started */	1125	/* coroutine already started */
764	save_perl (prev);	1126	save_perl (aTHX_ prev);
765	load_perl (next);	1127	load_perl (aTHX_ next);
766	}	1128	}
767		1129
768	prev__cctx = prev->cctx;	1130	prev__cctx = prev->cctx;
769		1131
770	/* possibly "free" the cctx */	1132	/* possibly "free" the cctx */
771	if (prev__cctx->idle_sp == STACKLEVEL)	1133	if (expect_true (prev__cctx->idle_sp == STACKLEVEL && !(prev__cctx->flags & CC_TRACE)))
772	{	1134	{
773	/* I assume that STACKLEVEL is a stronger indicator than PL_top_env changes */	1135	/* I assume that STACKLEVEL is a stronger indicator than PL_top_env changes */
774	assert (("ERROR: current top_env must equal previous top_env", PL_top_env == prev__cctx->idle_te));	1136	assert (("ERROR: current top_env must equal previous top_env", PL_top_env == prev__cctx->idle_te));
775		1137
776	prev->cctx = 0;	1138	prev->cctx = 0;
777		1139
		1140	/* if the cctx is about to be destroyed we need to make sure we won't see it in cctx_get */
		1141	/* without this the next cctx_get might destroy the prev__cctx while still in use */
		1142	if (expect_false (CCTX_EXPIRED (prev__cctx)))
		1143	if (!next->cctx)
		1144	next->cctx = cctx_get (aTHX);
		1145
778	cctx_put (prev__cctx);	1146	cctx_put (prev__cctx);
779	prev__cctx->inuse = 0;
780	}	1147	}
781		1148
		1149	++next->usecount;
		1150
782	if (!next->cctx)	1151	if (expect_true (!next->cctx))
783	{
784	next->cctx = cctx_get ();	1152	next->cctx = cctx_get (aTHX);
785	assert (!next->cctx->inuse);
786	next->cctx->inuse = 1;
787	}
788		1153
789	if (prev__cctx != next->cctx)	1154	if (expect_false (prev__cctx != next->cctx))
790	{	1155	{
791	prev__cctx->top_env = PL_top_env;	1156	prev__cctx->top_env = PL_top_env;
792	PL_top_env = next->cctx->top_env;	1157	PL_top_env = next->cctx->top_env;
793	coro_transfer (&prev__cctx->cctx, &next->cctx->cctx);	1158	coro_transfer (&prev__cctx->cctx, &next->cctx->cctx);
794	}	1159	}
795		1160
796	free_coro_mortal ();	1161	free_coro_mortal (aTHX);
797	UNLOCK;	1162	UNLOCK;
		1163
		1164	if (expect_false (prev->throw \|\| next->throw))
		1165	{
		1166	struct coro *coro = SvSTATE (coro_current);
		1167
		1168	if (coro->throw)
		1169	{
		1170	SV *exception = coro->throw;
		1171	coro->throw = 0;
		1172	sv_setsv (ERRSV, exception);
		1173	croak (0);
		1174	}
		1175	}
798	}	1176	}
799	}	1177	}
800		1178
801	struct transfer_args	1179	struct transfer_args
802	{	1180	{
803	struct coro prev, next;	1181	struct coro prev, next;
804	};	1182	};
805		1183
806	#define TRANSFER(ta) transfer ((ta).prev, (ta).next)	1184	#define TRANSFER(ta) transfer (aTHX_ (ta).prev, (ta).next)
		1185	#define TRANSFER_CHECK(ta) transfer_check (aTHX_ (ta).prev, (ta).next)
		1186
		1187	/ high level stuff ******************************************************/
807		1188
808	static int	1189	static int
809	coro_state_destroy (struct coro *coro)	1190	coro_state_destroy (pTHX_ struct coro *coro)
810	{	1191	{
811	if (coro->flags & CF_DESTROYED)	1192	if (coro->flags & CF_DESTROYED)
812	return 0;	1193	return 0;
813		1194
814	coro->flags \|= CF_DESTROYED;	1195	coro->flags \|= CF_DESTROYED;
		1196
		1197	if (coro->flags & CF_READY)
		1198	{
		1199	/* reduce nready, as destroying a ready coro effectively unreadies it */
		1200	/* alternative: look through all ready queues and remove the coro */
		1201	LOCK;
		1202	--coro_nready;
		1203	UNLOCK;
		1204	}
		1205	else
		1206	coro->flags \|= CF_READY; /* make sure it is NOT put into the readyqueue */
815		1207
816	if (coro->mainstack && coro->mainstack != main_mainstack)	1208	if (coro->mainstack && coro->mainstack != main_mainstack)
817	{	1209	{
818	assert (!(coro->flags & CF_RUNNING));
819
820	struct coro temp;	1210	struct coro temp;
821	Zero (&temp, 1, struct coro);
822	temp.save = CORO_SAVE_ALL;
823		1211
824	if (coro->flags & CF_RUNNING)	1212	if (coro->flags & CF_RUNNING)
825	croak ("FATAL: tried to destroy currently running coroutine");	1213	croak ("FATAL: tried to destroy currently running coroutine");
826		1214
827	save_perl (&temp);	1215	save_perl (aTHX_ &temp);
828	load_perl (coro);	1216	load_perl (aTHX_ coro);
829		1217
830	coro_destroy_stacks ();	1218	coro_destroy (aTHX_ coro);
831		1219
832	load_perl (&temp); /* this will get rid of defsv etc.. */	1220	load_perl (aTHX_ &temp);
833		1221
834	coro->mainstack = 0;	1222	coro->slot = 0;
835	}	1223	}
836		1224
837	cctx_destroy (coro->cctx);	1225	cctx_destroy (coro->cctx);
838	SvREFCNT_dec (coro->args);	1226	SvREFCNT_dec (coro->args);
839		1227
		1228	if (coro->next) coro->next->prev = coro->prev;
		1229	if (coro->prev) coro->prev->next = coro->next;
		1230	if (coro == coro_first) coro_first = coro->next;
		1231
840	return 1;	1232	return 1;
841	}	1233	}
842		1234
843	static int	1235	static int
844	coro_state_free (pTHX_ SV sv, MAGIC mg)	1236	coro_state_free (pTHX_ SV sv, MAGIC mg)
845	{	1237	{
846	struct coro coro = (struct coro )mg->mg_ptr;	1238	struct coro coro = (struct coro )mg->mg_ptr;
847	mg->mg_ptr = 0;	1239	mg->mg_ptr = 0;
848		1240
		1241	coro->hv = 0;
		1242
849	if (--coro->refcnt < 0)	1243	if (--coro->refcnt < 0)
850	{	1244	{
851	coro_state_destroy (coro);	1245	coro_state_destroy (aTHX_ coro);
852	Safefree (coro);	1246	Safefree (coro);
853	}	1247	}
854		1248
855	return 0;	1249	return 0;
856	}	1250	}
…		…
874	#else	1268	#else
875	# define MGf_DUP 0	1269	# define MGf_DUP 0
876	#endif	1270	#endif
877	};	1271	};
878		1272
879	static struct coro *
880	SvSTATE (SV *coro)
881	{
882	HV *stash;
883	MAGIC *mg;
884
885	if (SvROK (coro))
886	coro = SvRV (coro);
887
888	stash = SvSTASH (coro);
889	if (stash != coro_stash && stash != coro_state_stash)
890	{
891	/* very slow, but rare, check */
892	if (!sv_derived_from (sv_2mortal (newRV_inc (coro)), "Coro::State"))
893	croak ("Coro::State object required");
894	}
895
896	mg = SvMAGIC (coro);
897	assert (mg->mg_type == PERL_MAGIC_ext);
898	return (struct coro *)mg->mg_ptr;
899	}
900
901	static void	1273	static void
902	prepare_transfer (struct transfer_args ta, SV prev_sv, SV *next_sv)	1274	prepare_transfer (pTHX_ struct transfer_args ta, SV prev_sv, SV *next_sv)
903	{	1275	{
904	ta->prev = SvSTATE (prev_sv);	1276	ta->prev = SvSTATE (prev_sv);
905	ta->next = SvSTATE (next_sv);	1277	ta->next = SvSTATE (next_sv);
		1278	TRANSFER_CHECK (*ta);
906	}	1279	}
907		1280
908	static void	1281	static void
909	api_transfer (SV prev_sv, SV next_sv)	1282	api_transfer (SV prev_sv, SV next_sv)
910	{	1283	{
		1284	dTHX;
911	struct transfer_args ta;	1285	struct transfer_args ta;
912		1286
913	prepare_transfer (&ta, prev_sv, next_sv);	1287	prepare_transfer (aTHX_ &ta, prev_sv, next_sv);
914	TRANSFER (ta);	1288	TRANSFER (ta);
915	}	1289	}
916		1290
917	static int
918	api_save (SV *coro_sv, int new_save)
919	{
920	struct coro *coro = SvSTATE (coro_sv);
921	int old_save = coro->save;
922
923	if (new_save >= 0)
924	coro->save = new_save;
925
926	return old_save;
927	}
928
929	/ Coro ******************************************************************/	1291	/ Coro ******************************************************************/
930		1292
931	#define PRIO_MAX 3
932	#define PRIO_HIGH 1
933	#define PRIO_NORMAL 0
934	#define PRIO_LOW -1
935	#define PRIO_IDLE -3
936	#define PRIO_MIN -4
937
938	/* for Coro.pm */
939	static SV *coro_current;
940	static AV *coro_ready [PRIO_MAX-PRIO_MIN+1];
941	static int coro_nready;
942
943	static void	1293	static void
944	coro_enq (SV *coro_sv)	1294	coro_enq (pTHX_ SV *coro_sv)
945	{	1295	{
946	av_push (coro_ready [SvSTATE (coro_sv)->prio - PRIO_MIN], coro_sv);	1296	av_push (coro_ready [SvSTATE (coro_sv)->prio - PRIO_MIN], coro_sv);
947	coro_nready++;
948	}	1297	}
949		1298
950	static SV *	1299	static SV *
951	coro_deq (int min_prio)	1300	coro_deq (pTHX_ int min_prio)
952	{	1301	{
953	int prio = PRIO_MAX - PRIO_MIN;	1302	int prio = PRIO_MAX - PRIO_MIN;
954		1303
955	min_prio -= PRIO_MIN;	1304	min_prio -= PRIO_MIN;
956	if (min_prio < 0)	1305	if (min_prio < 0)
957	min_prio = 0;	1306	min_prio = 0;
958		1307
959	for (prio = PRIO_MAX - PRIO_MIN + 1; --prio >= min_prio; )	1308	for (prio = PRIO_MAX - PRIO_MIN + 1; --prio >= min_prio; )
960	if (AvFILLp (coro_ready [prio]) >= 0)	1309	if (AvFILLp (coro_ready [prio]) >= 0)
961	{
962	coro_nready--;
963	return av_shift (coro_ready [prio]);	1310	return av_shift (coro_ready [prio]);
964	}
965		1311
966	return 0;	1312	return 0;
967	}	1313	}
968		1314
969	static int	1315	static int
970	api_ready (SV *coro_sv)	1316	api_ready (SV *coro_sv)
971	{	1317	{
		1318	dTHX;
972	struct coro *coro;	1319	struct coro *coro;
973		1320
974	if (SvROK (coro_sv))	1321	if (SvROK (coro_sv))
975	coro_sv = SvRV (coro_sv);	1322	coro_sv = SvRV (coro_sv);
976		1323
…		…
980	return 0;	1327	return 0;
981		1328
982	coro->flags \|= CF_READY;	1329	coro->flags \|= CF_READY;
983		1330
984	LOCK;	1331	LOCK;
985	coro_enq (SvREFCNT_inc (coro_sv));	1332	coro_enq (aTHX_ SvREFCNT_inc (coro_sv));
		1333	++coro_nready;
986	UNLOCK;	1334	UNLOCK;
987		1335
988	return 1;	1336	return 1;
989	}	1337	}
990		1338
991	static int	1339	static int
992	api_is_ready (SV *coro_sv)	1340	api_is_ready (SV *coro_sv)
993	{	1341	{
		1342	dTHX;
994	return !!(SvSTATE (coro_sv)->flags & CF_READY);	1343	return !!(SvSTATE (coro_sv)->flags & CF_READY);
995	}	1344	}
996		1345
997	static void	1346	static void
998	prepare_schedule (struct transfer_args *ta)	1347	prepare_schedule (pTHX_ struct transfer_args *ta)
999	{	1348	{
1000	SV prev_sv, next_sv;	1349	SV prev_sv, next_sv;
1001		1350
1002	for (;;)	1351	for (;;)
1003	{	1352	{
1004	LOCK;	1353	LOCK;
1005	next_sv = coro_deq (PRIO_MIN);	1354	next_sv = coro_deq (aTHX_ PRIO_MIN);
1006	UNLOCK;
1007		1355
1008	/* nothing to schedule: call the idle handler */	1356	/* nothing to schedule: call the idle handler */
1009	if (!next_sv)	1357	if (expect_false (!next_sv))
1010	{	1358	{
1011	dSP;	1359	dSP;
		1360	UNLOCK;
1012		1361
1013	ENTER;	1362	ENTER;
1014	SAVETMPS;	1363	SAVETMPS;
1015		1364
1016	PUSHMARK (SP);	1365	PUSHMARK (SP);
…		…
1023	}	1372	}
1024		1373
1025	ta->next = SvSTATE (next_sv);	1374	ta->next = SvSTATE (next_sv);
1026		1375
1027	/* cannot transfer to destroyed coros, skip and look for next */	1376	/* cannot transfer to destroyed coros, skip and look for next */
1028	if (ta->next->flags & CF_DESTROYED)	1377	if (expect_false (ta->next->flags & CF_DESTROYED))
1029	{	1378	{
		1379	UNLOCK;
1030	SvREFCNT_dec (next_sv);	1380	SvREFCNT_dec (next_sv);
		1381	/* coro_nready is already taken care of by destroy */
1031	continue;	1382	continue;
1032	}	1383	}
1033		1384
		1385	--coro_nready;
		1386	UNLOCK;
1034	break;	1387	break;
1035	}	1388	}
1036		1389
1037	/* free this only after the transfer */	1390	/* free this only after the transfer */
1038	prev_sv = SvRV (coro_current);	1391	prev_sv = SvRV (coro_current);
1039	SvRV_set (coro_current, next_sv);
1040	ta->prev = SvSTATE (prev_sv);	1392	ta->prev = SvSTATE (prev_sv);
1041		1393	TRANSFER_CHECK (*ta);
1042	assert (ta->next->flags & CF_READY);	1394	assert (ta->next->flags & CF_READY);
1043	ta->next->flags &= ~CF_READY;	1395	ta->next->flags &= ~CF_READY;
		1396	SvRV_set (coro_current, next_sv);
1044		1397
1045	LOCK;	1398	LOCK;
1046	free_coro_mortal ();	1399	free_coro_mortal (aTHX);
1047	coro_mortal = prev_sv;	1400	coro_mortal = prev_sv;
1048	UNLOCK;	1401	UNLOCK;
1049	}	1402	}
1050		1403
1051	static void	1404	static void
1052	prepare_cede (struct transfer_args *ta)	1405	prepare_cede (pTHX_ struct transfer_args *ta)
1053	{	1406	{
1054	api_ready (coro_current);	1407	api_ready (coro_current);
1055	prepare_schedule (ta);	1408	prepare_schedule (aTHX_ ta);
1056	}	1409	}
1057		1410
1058	static int	1411	static int
1059	prepare_cede_notself (struct transfer_args *ta)	1412	prepare_cede_notself (pTHX_ struct transfer_args *ta)
1060	{	1413	{
1061	if (coro_nready)	1414	if (coro_nready)
1062	{	1415	{
1063	SV *prev = SvRV (coro_current);	1416	SV *prev = SvRV (coro_current);
1064	prepare_schedule (ta);	1417	prepare_schedule (aTHX_ ta);
1065	api_ready (prev);	1418	api_ready (prev);
1066	return 1;	1419	return 1;
1067	}	1420	}
1068	else	1421	else
1069	return 0;	1422	return 0;
1070	}	1423	}
1071		1424
1072	static void	1425	static void
1073	api_schedule (void)	1426	api_schedule (void)
1074	{	1427	{
		1428	dTHX;
1075	struct transfer_args ta;	1429	struct transfer_args ta;
1076		1430
1077	prepare_schedule (&ta);	1431	prepare_schedule (aTHX_ &ta);
1078	TRANSFER (ta);	1432	TRANSFER (ta);
1079	}	1433	}
1080		1434
1081	static int	1435	static int
1082	api_cede (void)	1436	api_cede (void)
1083	{	1437	{
		1438	dTHX;
1084	struct transfer_args ta;	1439	struct transfer_args ta;
1085		1440
1086	prepare_cede (&ta);	1441	prepare_cede (aTHX_ &ta);
1087		1442
1088	if (ta.prev != ta.next)	1443	if (expect_true (ta.prev != ta.next))
1089	{	1444	{
1090	TRANSFER (ta);	1445	TRANSFER (ta);
1091	return 1;	1446	return 1;
1092	}	1447	}
1093	else	1448	else
…		…
1095	}	1450	}
1096		1451
1097	static int	1452	static int
1098	api_cede_notself (void)	1453	api_cede_notself (void)
1099	{	1454	{
		1455	dTHX;
1100	struct transfer_args ta;	1456	struct transfer_args ta;
1101		1457
1102	if (prepare_cede_notself (&ta))	1458	if (prepare_cede_notself (aTHX_ &ta))
1103	{	1459	{
1104	TRANSFER (ta);	1460	TRANSFER (ta);
1105	return 1;	1461	return 1;
1106	}	1462	}
1107	else	1463	else
1108	return 0;	1464	return 0;
1109	}	1465	}
1110		1466
		1467	static void
		1468	api_trace (SV *coro_sv, int flags)
		1469	{
		1470	dTHX;
		1471	struct coro *coro = SvSTATE (coro_sv);
		1472
		1473	if (flags & CC_TRACE)
		1474	{
		1475	if (!coro->cctx)
		1476	coro->cctx = cctx_new ();
		1477	else if (!(coro->cctx->flags & CC_TRACE))
		1478	croak ("cannot enable tracing on coroutine with custom stack");
		1479
		1480	coro->cctx->flags \|= CC_NOREUSE \| (flags & (CC_TRACE \| CC_TRACE_ALL));
		1481	}
		1482	else if (coro->cctx && coro->cctx->flags & CC_TRACE)
		1483	{
		1484	coro->cctx->flags &= ~(CC_TRACE \| CC_TRACE_ALL);
		1485
		1486	if (coro->flags & CF_RUNNING)
		1487	PL_runops = RUNOPS_DEFAULT;
		1488	else
		1489	coro->slot->runops = RUNOPS_DEFAULT;
		1490	}
		1491	}
		1492
1111	MODULE = Coro::State PACKAGE = Coro::State	1493	MODULE = Coro::State PACKAGE = Coro::State PREFIX = api_
1112		1494
1113	PROTOTYPES: DISABLE	1495	PROTOTYPES: DISABLE
1114		1496
1115	BOOT:	1497	BOOT:
1116	{	1498	{
1117	#ifdef USE_ITHREADS	1499	#ifdef USE_ITHREADS
1118	MUTEX_INIT (&coro_mutex);	1500	MUTEX_INIT (&coro_mutex);
1119	#endif	1501	#endif
1120	BOOT_PAGESIZE;	1502	BOOT_PAGESIZE;
1121		1503
		1504	irsgv = gv_fetchpv ("/" , GV_ADD\|GV_NOTQUAL, SVt_PV);
		1505	stdoutgv = gv_fetchpv ("STDOUT", GV_ADD\|GV_NOTQUAL, SVt_PVIO);
		1506
		1507	hv_sig = coro_get_hv ("SIG", TRUE);
		1508	sv_diehook = coro_get_sv ("Coro::State::DIEHOOK" , TRUE);
		1509	sv_warnhook = coro_get_sv ("Coro::State::WARNHOOK", TRUE);
		1510
		1511	if (!PL_diehook ) hv_store (hv_sig, strpair ("__DIE__" ), SvREFCNT_inc (sv_diehook ), 0);
		1512	if (!PL_warnhook) hv_store (hv_sig, strpair ("__WARN__"), SvREFCNT_inc (sv_warnhook), 0);
		1513
1122	coro_state_stash = gv_stashpv ("Coro::State", TRUE);	1514	coro_state_stash = gv_stashpv ("Coro::State", TRUE);
1123		1515
		1516	newCONSTSUB (coro_state_stash, "CC_TRACE" , newSViv (CC_TRACE));
		1517	newCONSTSUB (coro_state_stash, "CC_TRACE_SUB" , newSViv (CC_TRACE_SUB));
1124	newCONSTSUB (coro_state_stash, "SAVE_DEFAV", newSViv (CORO_SAVE_DEFAV));	1518	newCONSTSUB (coro_state_stash, "CC_TRACE_LINE", newSViv (CC_TRACE_LINE));
1125	newCONSTSUB (coro_state_stash, "SAVE_DEFSV", newSViv (CORO_SAVE_DEFSV));
1126	newCONSTSUB (coro_state_stash, "SAVE_ERRSV", newSViv (CORO_SAVE_ERRSV));
1127	newCONSTSUB (coro_state_stash, "SAVE_IRSSV", newSViv (CORO_SAVE_IRSSV));
1128	newCONSTSUB (coro_state_stash, "SAVE_ALL", newSViv (CORO_SAVE_ALL));	1519	newCONSTSUB (coro_state_stash, "CC_TRACE_ALL" , newSViv (CC_TRACE_ALL));
1129		1520
1130	main_mainstack = PL_mainstack;	1521	main_mainstack = PL_mainstack;
		1522	main_top_env = PL_top_env;
		1523
		1524	while (main_top_env->je_prev)
		1525	main_top_env = main_top_env->je_prev;
1131		1526
1132	coroapi.ver = CORO_API_VERSION;	1527	coroapi.ver = CORO_API_VERSION;
1133	coroapi.transfer = api_transfer;	1528	coroapi.transfer = api_transfer;
1134		1529
1135	assert (("PRIO_NORMAL must be 0", !PRIO_NORMAL));	1530	assert (("PRIO_NORMAL must be 0", !PRIO_NORMAL));
…		…
1142	struct coro *coro;	1537	struct coro *coro;
1143	HV *hv;	1538	HV *hv;
1144	int i;	1539	int i;
1145		1540
1146	Newz (0, coro, 1, struct coro);	1541	Newz (0, coro, 1, struct coro);
1147	coro->args = newAV ();	1542	coro->args = newAV ();
1148	coro->save = CORO_SAVE_ALL;
1149	coro->flags = CF_NEW;	1543	coro->flags = CF_NEW;
1150		1544
		1545	if (coro_first) coro_first->prev = coro;
		1546	coro->next = coro_first;
		1547	coro_first = coro;
		1548
1151	hv = newHV ();	1549	coro->hv = hv = newHV ();
1152	sv_magicext ((SV )hv, 0, PERL_MAGIC_ext, &coro_state_vtbl, (char )coro, 0)->mg_flags \|= MGf_DUP;	1550	sv_magicext ((SV )hv, 0, PERL_MAGIC_ext, &coro_state_vtbl, (char )coro, 0)->mg_flags \|= MGf_DUP;
1153	RETVAL = sv_bless (newRV_noinc ((SV *)hv), gv_stashpv (klass, 1));	1551	RETVAL = sv_bless (newRV_noinc ((SV *)hv), gv_stashpv (klass, 1));
1154		1552
		1553	av_extend (coro->args, items - 1);
1155	for (i = 1; i < items; i++)	1554	for (i = 1; i < items; i++)
1156	av_push (coro->args, newSVsv (ST (i)));	1555	av_push (coro->args, newSVsv (ST (i)));
1157	}	1556	}
1158	OUTPUT:	1557	OUTPUT:
1159	RETVAL	1558	RETVAL
1160		1559
1161	int	1560	# these not obviously related functions are all rolled into the same xs
1162	save (SV *coro, int new_save = -1)	1561	# function to increase chances that they all will call transfer with the same
1163	CODE:	1562	# stack offset
1164	RETVAL = api_save (coro, new_save);
1165	OUTPUT:
1166	RETVAL
1167
1168	void	1563	void
1169	_set_stacklevel (...)	1564	_set_stacklevel (...)
1170	ALIAS:	1565	ALIAS:
1171	Coro::State::transfer = 1	1566	Coro::State::transfer = 1
1172	Coro::schedule = 2	1567	Coro::schedule = 2
…		…
1185		1580
1186	case 1:	1581	case 1:
1187	if (items != 2)	1582	if (items != 2)
1188	croak ("Coro::State::transfer (prev,next) expects two arguments, not %d", items);	1583	croak ("Coro::State::transfer (prev,next) expects two arguments, not %d", items);
1189		1584
1190	prepare_transfer (&ta, ST (0), ST (1));	1585	prepare_transfer (aTHX_ &ta, ST (0), ST (1));
1191	break;	1586	break;
1192		1587
1193	case 2:	1588	case 2:
1194	prepare_schedule (&ta);	1589	prepare_schedule (aTHX_ &ta);
1195	break;	1590	break;
1196		1591
1197	case 3:	1592	case 3:
1198	prepare_cede (&ta);	1593	prepare_cede (aTHX_ &ta);
1199	break;	1594	break;
1200		1595
1201	case 4:	1596	case 4:
1202	if (!prepare_cede_notself (&ta))	1597	if (!prepare_cede_notself (aTHX_ &ta))
1203	XSRETURN_EMPTY;	1598	XSRETURN_EMPTY;
1204		1599
1205	break;	1600	break;
1206	}	1601	}
1207		1602
1208	BARRIER;	1603	BARRIER;
1209	TRANSFER (ta);	1604	TRANSFER (ta);
1210		1605
1211	if (GIMME_V != G_VOID && ta.next != ta.prev)	1606	if (expect_false (GIMME_V != G_VOID && ta.next != ta.prev))
1212	XSRETURN_YES;	1607	XSRETURN_YES;
1213	}	1608	}
1214		1609
1215	bool	1610	bool
1216	_destroy (SV *coro_sv)	1611	_destroy (SV *coro_sv)
1217	CODE:	1612	CODE:
1218	RETVAL = coro_state_destroy (SvSTATE (coro_sv));	1613	RETVAL = coro_state_destroy (aTHX_ SvSTATE (coro_sv));
1219	OUTPUT:	1614	OUTPUT:
1220	RETVAL	1615	RETVAL
1221		1616
1222	void	1617	void
1223	_exit (code)	1618	_exit (code)
…		…
1225	PROTOTYPE: $	1620	PROTOTYPE: $
1226	CODE:	1621	CODE:
1227	_exit (code);	1622	_exit (code);
1228		1623
1229	int	1624	int
		1625	cctx_stacksize (int new_stacksize = 0)
		1626	CODE:
		1627	RETVAL = coro_stacksize;
		1628	if (new_stacksize)
		1629	coro_stacksize = new_stacksize;
		1630	OUTPUT:
		1631	RETVAL
		1632
		1633	int
1230	cctx_count ()	1634	cctx_count ()
1231	CODE:	1635	CODE:
1232	RETVAL = cctx_count;	1636	RETVAL = cctx_count;
1233	OUTPUT:	1637	OUTPUT:
1234	RETVAL	1638	RETVAL
…		…
1238	CODE:	1642	CODE:
1239	RETVAL = cctx_idle;	1643	RETVAL = cctx_idle;
1240	OUTPUT:	1644	OUTPUT:
1241	RETVAL	1645	RETVAL
1242		1646
		1647	void
		1648	list ()
		1649	PPCODE:
		1650	{
		1651	struct coro *coro;
		1652	for (coro = coro_first; coro; coro = coro->next)
		1653	if (coro->hv)
		1654	XPUSHs (sv_2mortal (newRV_inc ((SV *)coro->hv)));
		1655	}
		1656
		1657	void
		1658	call (Coro::State coro, SV *coderef)
		1659	ALIAS:
		1660	eval = 1
		1661	CODE:
		1662	{
		1663	if (coro->mainstack)
		1664	{
		1665	struct coro temp;
		1666
		1667	if (!(coro->flags & CF_RUNNING))
		1668	{
		1669	save_perl (aTHX_ &temp);
		1670	load_perl (aTHX_ coro);
		1671	}
		1672
		1673	{
		1674	dSP;
		1675	ENTER;
		1676	SAVETMPS;
		1677	PUSHMARK (SP);
		1678	PUTBACK;
		1679
		1680	if (ix)
		1681	eval_sv (coderef, 0);
		1682	else
		1683	call_sv (coderef, G_KEEPERR \| G_EVAL \| G_VOID \| G_DISCARD);
		1684
		1685	SPAGAIN;
		1686	FREETMPS;
		1687	LEAVE;
		1688	PUTBACK;
		1689	}
		1690
		1691	if (!(coro->flags & CF_RUNNING))
		1692	{
		1693	save_perl (aTHX_ coro);
		1694	load_perl (aTHX_ &temp);
		1695	}
		1696	}
		1697	}
		1698
		1699	SV *
		1700	is_ready (Coro::State coro)
		1701	PROTOTYPE: $
		1702	ALIAS:
		1703	is_ready = CF_READY
		1704	is_running = CF_RUNNING
		1705	is_new = CF_NEW
		1706	is_destroyed = CF_DESTROYED
		1707	CODE:
		1708	RETVAL = boolSV (coro->flags & ix);
		1709	OUTPUT:
		1710	RETVAL
		1711
		1712	void
		1713	api_trace (SV *coro, int flags = CC_TRACE \| CC_TRACE_SUB)
		1714
		1715	SV *
		1716	has_stack (Coro::State coro)
		1717	PROTOTYPE: $
		1718	CODE:
		1719	RETVAL = boolSV (!!coro->cctx);
		1720	OUTPUT:
		1721	RETVAL
		1722
		1723	int
		1724	is_traced (Coro::State coro)
		1725	PROTOTYPE: $
		1726	CODE:
		1727	RETVAL = (coro->cctx ? coro->cctx->flags : 0) & CC_TRACE_ALL;
		1728	OUTPUT:
		1729	RETVAL
		1730
		1731	IV
		1732	rss (Coro::State coro)
		1733	PROTOTYPE: $
		1734	ALIAS:
		1735	usecount = 1
		1736	CODE:
		1737	switch (ix)
		1738	{
		1739	case 0: RETVAL = coro_rss (aTHX_ coro); break;
		1740	case 1: RETVAL = coro->usecount; break;
		1741	}
		1742	OUTPUT:
		1743	RETVAL
		1744
		1745
1243	MODULE = Coro::State PACKAGE = Coro	1746	MODULE = Coro::State PACKAGE = Coro
1244		1747
1245	BOOT:	1748	BOOT:
1246	{	1749	{
1247	int i;	1750	int i;
1248		1751
		1752	sv_pool_rss = coro_get_sv ("Coro::POOL_RSS" , TRUE);
		1753	sv_pool_size = coro_get_sv ("Coro::POOL_SIZE" , TRUE);
		1754	av_async_pool = coro_get_av ("Coro::async_pool", TRUE);
		1755
		1756	coro_current = coro_get_sv ("Coro::current", FALSE);
		1757	SvREADONLY_on (coro_current);
		1758
1249	coro_stash = gv_stashpv ("Coro", TRUE);	1759	coro_stash = gv_stashpv ("Coro", TRUE);
1250		1760
1251	newCONSTSUB (coro_stash, "PRIO_MAX", newSViv (PRIO_MAX));	1761	newCONSTSUB (coro_stash, "PRIO_MAX", newSViv (PRIO_MAX));
1252	newCONSTSUB (coro_stash, "PRIO_HIGH", newSViv (PRIO_HIGH));	1762	newCONSTSUB (coro_stash, "PRIO_HIGH", newSViv (PRIO_HIGH));
1253	newCONSTSUB (coro_stash, "PRIO_NORMAL", newSViv (PRIO_NORMAL));	1763	newCONSTSUB (coro_stash, "PRIO_NORMAL", newSViv (PRIO_NORMAL));
1254	newCONSTSUB (coro_stash, "PRIO_LOW", newSViv (PRIO_LOW));	1764	newCONSTSUB (coro_stash, "PRIO_LOW", newSViv (PRIO_LOW));
1255	newCONSTSUB (coro_stash, "PRIO_IDLE", newSViv (PRIO_IDLE));	1765	newCONSTSUB (coro_stash, "PRIO_IDLE", newSViv (PRIO_IDLE));
1256	newCONSTSUB (coro_stash, "PRIO_MIN", newSViv (PRIO_MIN));	1766	newCONSTSUB (coro_stash, "PRIO_MIN", newSViv (PRIO_MIN));
1257		1767
1258	coro_current = get_sv ("Coro::current", FALSE);
1259	SvREADONLY_on (coro_current);
1260
1261	for (i = PRIO_MAX - PRIO_MIN + 1; i--; )	1768	for (i = PRIO_MAX - PRIO_MIN + 1; i--; )
1262	coro_ready[i] = newAV ();	1769	coro_ready[i] = newAV ();
1263		1770
1264	{	1771	{
1265	SV *sv = perl_get_sv("Coro::API", 1);	1772	SV *sv = perl_get_sv ("Coro::API", TRUE);
		1773	perl_get_sv ("Coro::API", TRUE); /* silence 5.10 warning */
1266		1774
1267	coroapi.schedule = api_schedule;	1775	coroapi.schedule = api_schedule;
1268	coroapi.save = api_save;
1269	coroapi.cede = api_cede;	1776	coroapi.cede = api_cede;
1270	coroapi.cede_notself = api_cede_notself;	1777	coroapi.cede_notself = api_cede_notself;
1271	coroapi.ready = api_ready;	1778	coroapi.ready = api_ready;
1272	coroapi.is_ready = api_is_ready;	1779	coroapi.is_ready = api_is_ready;
1273	coroapi.nready = &coro_nready;	1780	coroapi.nready = &coro_nready;
…		…
1314	CODE:	1821	CODE:
1315	RETVAL = boolSV (api_ready (self));	1822	RETVAL = boolSV (api_ready (self));
1316	OUTPUT:	1823	OUTPUT:
1317	RETVAL	1824	RETVAL
1318		1825
1319	SV *
1320	is_ready (SV *self)
1321	PROTOTYPE: $
1322	CODE:
1323	RETVAL = boolSV (api_is_ready (self));
1324	OUTPUT:
1325	RETVAL
1326
1327	int	1826	int
1328	nready (...)	1827	nready (...)
1329	PROTOTYPE:	1828	PROTOTYPE:
1330	CODE:	1829	CODE:
1331	RETVAL = coro_nready;	1830	RETVAL = coro_nready;
1332	OUTPUT:	1831	OUTPUT:
1333	RETVAL	1832	RETVAL
1334		1833
		1834	void
		1835	throw (Coro::State self, SV *throw = &PL_sv_undef)
		1836	PROTOTYPE: $;$
		1837	CODE:
		1838	SvREFCNT_dec (self->throw);
		1839	self->throw = SvOK (throw) ? newSVsv (throw) : 0;
		1840
		1841	# for async_pool speedup
		1842	void
		1843	_pool_1 (SV *cb)
		1844	CODE:
		1845	{
		1846	struct coro *coro = SvSTATE (coro_current);
		1847	HV hv = (HV )SvRV (coro_current);
		1848	AV *defav = GvAV (PL_defgv);
		1849	SV *invoke = hv_delete (hv, strpair ("_invoke"), 0);
		1850	AV *invoke_av;
		1851	int i, len;
		1852
		1853	if (!invoke)
		1854	croak ("\3async_pool terminate\2\n");
		1855
		1856	SvREFCNT_dec (coro->saved_deffh);
		1857	coro->saved_deffh = SvREFCNT_inc ((SV *)PL_defoutgv);
		1858
		1859	hv_store (hv, "desc", sizeof ("desc") - 1,
		1860	newSVpvn (strpair ("[async_pool]")), 0);
		1861
		1862	invoke_av = (AV *)SvRV (invoke);
		1863	len = av_len (invoke_av);
		1864
		1865	sv_setsv (cb, AvARRAY (invoke_av)[0]);
		1866
		1867	if (len > 0)
		1868	{
		1869	av_fill (defav, len - 1);
		1870	for (i = 0; i < len; ++i)
		1871	av_store (defav, i, SvREFCNT_inc (AvARRAY (invoke_av)[i + 1]));
		1872	}
		1873
		1874	SvREFCNT_dec (invoke);
		1875	}
		1876
		1877	void
		1878	_pool_2 (SV *cb)
		1879	CODE:
		1880	{
		1881	struct coro *coro = SvSTATE (coro_current);
		1882
		1883	sv_setsv (cb, &PL_sv_undef);
		1884
		1885	SvREFCNT_dec ((SV )PL_defoutgv); PL_defoutgv = (GV )coro->saved_deffh;
		1886	coro->saved_deffh = 0;
		1887
		1888	if (coro_rss (aTHX_ coro) > SvIV (sv_pool_rss)
		1889	\|\| av_len (av_async_pool) + 1 >= SvIV (sv_pool_size))
		1890	croak ("\3async_pool terminate\2\n");
		1891
		1892	av_clear (GvAV (PL_defgv));
		1893	hv_store ((HV *)SvRV (coro_current), strpair ("desc"),
		1894	newSVpvn (strpair ("[async_pool idle]")), 0);
		1895
		1896	coro->prio = 0;
		1897
		1898	if (coro->cctx && (coro->cctx->flags & CC_TRACE))
		1899	api_trace (coro_current, 0);
		1900
		1901	av_push (av_async_pool, newSVsv (coro_current));
		1902	}
		1903
		1904
1335	MODULE = Coro::State PACKAGE = Coro::AIO	1905	MODULE = Coro::State PACKAGE = Coro::AIO
1336		1906
1337	SV *	1907	SV *
1338	_get_state ()	1908	_get_state ()
1339	CODE:	1909	CODE:

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Comparing Coro/Coro/State.xs (file contents): Revision 1.136 by root, Fri Jan 12 01:05:55 2007 UTC vs. Revision 1.204 by root, Mon Oct 8 03:03:39 2007 UTC

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Comparing Coro/Coro/State.xs (file contents):
Revision 1.136 by root, Fri Jan 12 01:05:55 2007 UTC vs.
Revision 1.204 by root, Mon Oct 8 03:03:39 2007 UTC