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

Comparing Coro/Coro/State.xs (file contents):
Revision 1.132 by root, Fri Dec 29 13:03:05 2006 UTC vs.
Revision 1.237 by root, Fri May 23 00:27:06 2008 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
7	#include "patchlevel.h"	10	#include "patchlevel.h"
8		11
9	#include <stdio.h>	12	#include <stdio.h>
10	#include <errno.h>	13	#include <errno.h>
11	#include <assert.h>	14	#include <assert.h>
		15
		16	#ifdef WIN32
		17	# undef setjmp
		18	# undef longjmp
		19	# undef _exit
		20	# define setjmp _setjmp // deep magic, don't ask
		21	#else
		22	# include <inttypes.h> /* most portable stdint.h */
		23	#endif
12		24
13	#ifdef HAVE_MMAP	25	#ifdef HAVE_MMAP
14	# include <unistd.h>	26	# include <unistd.h>
15	# include <sys/mman.h>	27	# include <sys/mman.h>
16	# ifndef MAP_ANONYMOUS	28	# ifndef MAP_ANONYMOUS
31	#else	43	#else
32	# define PAGESIZE 0	44	# define PAGESIZE 0
33	# define BOOT_PAGESIZE (void)0	45	# define BOOT_PAGESIZE (void)0
34	#endif	46	#endif
35		47
36	#if USE_VALGRIND	48	#if CORO_USE_VALGRIND
37	# include <valgrind/valgrind.h>	49	# include <valgrind/valgrind.h>
		50	# define REGISTER_STACK(cctx,start,end) (cctx)->valgrind_id = VALGRIND_STACK_REGISTER ((start), (end))
		51	#else
		52	# define REGISTER_STACK(cctx,start,end)
38	#endif	53	#endif
39		54
40	/* the maximum number of idle cctx that will be pooled */	55	/* the maximum number of idle cctx that will be pooled */
41	#define MAX_IDLE_CCTX 8	56	#define MAX_IDLE_CCTX 8
42		57
…		…
65	# ifndef IS_PADCONST	80	# ifndef IS_PADCONST
66	# define IS_PADCONST(v) 0	81	# define IS_PADCONST(v) 0
67	# endif	82	# endif
68	#endif	83	#endif
69		84
		85	/* 5.8.8 */
		86	#ifndef GV_NOTQUAL
		87	# define GV_NOTQUAL 0
		88	#endif
		89	#ifndef newSV
		90	# define newSV(l) NEWSV(0,l)
		91	#endif
		92
		93	/* 5.11 */
		94	#ifndef CxHASARGS
		95	# define CxHASARGS(cx) (cx)->blk_sub.hasargs
		96	#endif
		97
70	/* 5.8.7 */	98	/* 5.8.7 */
71	#ifndef SvRV_set	99	#ifndef SvRV_set
72	# define SvRV_set(s,v) SvRV(s) = (v)	100	# define SvRV_set(s,v) SvRV(s) = (v)
73	#endif	101	#endif
74		102
75	#if !__i386 && !__x86_64 && !__powerpc && !__m68k && !__alpha && !__mips && !__sparc64	103	#if !__i386 && !__x86_64 && !__powerpc && !__m68k && !__alpha && !__mips && !__sparc64
76	# undef STACKGUARD	104	# undef CORO_STACKGUARD
77	#endif	105	#endif
78		106
79	#ifndef STACKGUARD	107	#ifndef CORO_STACKGUARD
80	# define STACKGUARD 0	108	# define CORO_STACKGUARD 0
81	#endif	109	#endif
82		110
83	/* prefer perl internal functions over our own? */	111	/* prefer perl internal functions over our own? */
84	#ifndef PREFER_PERL_FUNCTIONS	112	#ifndef CORO_PREFER_PERL_FUNCTIONS
85	# define PREFER_PERL_FUNCTIONS 0	113	# define CORO_PREFER_PERL_FUNCTIONS 0
86	#endif	114	#endif
87		115
88	/* The next macro should declare a variable stacklevel that contains and approximation	116	/* 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	117	* portable way as possible. */
90	* and should be unique. */
91	#define dSTACKLEVEL int stacklevel	118	#define dSTACKLEVEL volatile char stacklevel
92	#define STACKLEVEL ((void *)&stacklevel)	119	#define STACKLEVEL ((void *)&stacklevel)
93		120
94	#define IN_DESTRUCT (PL_main_cv == Nullcv)	121	#define IN_DESTRUCT (PL_main_cv == Nullcv)
95		122
96	#if __GNUC__ >= 3	123	#if __GNUC__ >= 3
97	# define attribute(x) __attribute__(x)	124	# define attribute(x) __attribute__(x)
98	# define BARRIER __asm__ __volatile__ ("" : : : "memory")	125	# define BARRIER __asm__ __volatile__ ("" : : : "memory")
		126	# define expect(expr,value) __builtin_expect ((expr),(value))
99	#else	127	#else
100	# define attribute(x)	128	# define attribute(x)
101	# define BARRIER	129	# define BARRIER
		130	# define expect(expr,value) (expr)
102	#endif	131	#endif
		132
		133	#define expect_false(expr) expect ((expr) != 0, 0)
		134	#define expect_true(expr) expect ((expr) != 0, 1)
103		135
104	#define NOINLINE attribute ((noinline))	136	#define NOINLINE attribute ((noinline))
105		137
106	#include "CoroAPI.h"	138	#include "CoroAPI.h"
107		139
…		…
112	#else	144	#else
113	# define LOCK (void)0	145	# define LOCK (void)0
114	# define UNLOCK (void)0	146	# define UNLOCK (void)0
115	#endif	147	#endif
116		148
		149	/* helper storage struct for Coro::AIO */
117	struct io_state	150	struct io_state
118	{	151	{
119	int errorno;	152	int errorno;
120	I32 laststype;	153	I32 laststype;
121	int laststatval;	154	int laststatval;
122	Stat_t statcache;	155	Stat_t statcache;
123	};	156	};
124		157
		158	static size_t coro_stacksize = CORO_STACKSIZE;
125	static struct CoroAPI coroapi;	159	static struct CoroAPI coroapi;
126	static AV main_mainstack; / used to differentiate between $main and others */	160	static AV main_mainstack; / used to differentiate between $main and others */
		161	static JMPENV *main_top_env;
127	static HV coro_state_stash, coro_stash;	162	static HV coro_state_stash, coro_stash;
128	static SV coro_mortal; / will be freed after next transfer */	163	static volatile SV coro_mortal; / will be freed after next transfer */
		164
		165	static GV irsgv; / $/ */
		166	static GV stdoutgv; / STDOUT /
		167	static SV *rv_diehook;
		168	static SV *rv_warnhook;
		169	static HV hv_sig; / %SIG */
		170
		171	/* async_pool helper stuff */
		172	static SV *sv_pool_rss;
		173	static SV *sv_pool_size;
		174	static AV *av_async_pool;
		175
		176	/* Coro::AnyEvent */
		177	static SV *sv_activity;
129		178
130	static struct coro_cctx *cctx_first;	179	static struct coro_cctx *cctx_first;
131	static int cctx_count, cctx_idle;	180	static int cctx_count, cctx_idle;
		181
		182	enum {
		183	CC_MAPPED = 0x01,
		184	CC_NOREUSE = 0x02, /* throw this away after tracing */
		185	CC_TRACE = 0x04,
		186	CC_TRACE_SUB = 0x08, /* trace sub calls */
		187	CC_TRACE_LINE = 0x10, /* trace each statement */
		188	CC_TRACE_ALL = CC_TRACE_SUB \| CC_TRACE_LINE,
		189	};
132		190
133	/* this is a structure representing a c-level coroutine */	191	/* this is a structure representing a c-level coroutine */
134	typedef struct coro_cctx {	192	typedef struct coro_cctx {
135	struct coro_cctx *next;	193	struct coro_cctx *next;
136		194
137	/* the stack */	195	/* the stack */
138	void *sptr;	196	void *sptr;
139	long ssize; /* positive == mmap, otherwise malloc */	197	size_t ssize;
140		198
141	/* cpu state */	199	/* cpu state */
142	void idle_sp; / sp of top-level transfer/schedule/cede call */	200	void idle_sp; / sp of top-level transfer/schedule/cede call */
143	JMPENV idle_te; / same as idle_sp, but for top_env, TODO: remove once stable */	201	JMPENV idle_te; / same as idle_sp, but for top_env, TODO: remove once stable */
144	JMPENV *top_env;	202	JMPENV *top_env;
145	coro_context cctx;	203	coro_context cctx;
146		204
147	int inuse;
148
149	#if USE_VALGRIND	205	#if CORO_USE_VALGRIND
150	int valgrind_id;	206	int valgrind_id;
151	#endif	207	#endif
		208	unsigned char flags;
152	} coro_cctx;	209	} coro_cctx;
153		210
154	enum {	211	enum {
155	CF_RUNNING = 0x0001, /* coroutine is running */	212	CF_RUNNING = 0x0001, /* coroutine is running */
156	CF_READY = 0x0002, /* coroutine is ready */	213	CF_READY = 0x0002, /* coroutine is ready */
157	CF_NEW = 0x0004, /* ahs never been switched to */	214	CF_NEW = 0x0004, /* has never been switched to */
		215	CF_DESTROYED = 0x0008, /* coroutine data has been freed */
158	};	216	};
		217
		218	/* the structure where most of the perl state is stored, overlaid on the cxstack */
		219	typedef struct {
		220	SV *defsv;
		221	AV *defav;
		222	SV *errsv;
		223	SV *irsgv;
		224	#define VAR(name,type) type name;
		225	# include "state.h"
		226	#undef VAR
		227	} perl_slots;
		228
		229	#define SLOT_COUNT ((sizeof (perl_slots) + sizeof (PERL_CONTEXT) - 1) / sizeof (PERL_CONTEXT))
159		230
160	/* this is a structure representing a perl-level coroutine */	231	/* this is a structure representing a perl-level coroutine */
161	struct coro {	232	struct coro {
162	/* the c coroutine allocated to this perl coroutine, if any */	233	/* the c coroutine allocated to this perl coroutine, if any */
163	coro_cctx *cctx;	234	coro_cctx *cctx;
164		235
		236	/* process data */
		237	AV *mainstack;
		238	perl_slots slot; / basically the saved sp */
		239
165	/* data associated with this coroutine (initial args) */	240	AV args; / data associated with this coroutine (initial args) */
166	AV *args;	241	int refcnt; /* coroutines are refcounted, yes */
167	int refcnt;
168	int save; /* CORO_SAVE flags */
169	int flags; /* CF_ flags */	242	int flags; /* CF_ flags */
		243	HV hv; / the perl hash associated with this coro, if any */
170		244
171	/* optionally saved, might be zero */	245	/* statistics */
172	AV defav; / @_ */	246	int usecount; /* number of transfers to this coro */
173	SV defsv; / $_ */
174	SV errsv; / $@ */
175	SV irssv; / $/ */
176	SV irssv_sv; / real $/ cache */
177
178	#define VAR(name,type) type name;
179	# include "state.h"
180	#undef VAR
181		247
182	/* coro process data */	248	/* coro process data */
183	int prio;	249	int prio;
		250	SV throw; / exception to be thrown */
		251
		252	/* async_pool */
		253	SV *saved_deffh;
		254
		255	/* linked list */
		256	struct coro next, prev;
184	};	257	};
185		258
186	typedef struct coro *Coro__State;	259	typedef struct coro *Coro__State;
187	typedef struct coro *Coro__State_or_hashref;	260	typedef struct coro *Coro__State_or_hashref;
188		261
		262	/ Coro ******************************************************************/
		263
		264	#define PRIO_MAX 3
		265	#define PRIO_HIGH 1
		266	#define PRIO_NORMAL 0
		267	#define PRIO_LOW -1
		268	#define PRIO_IDLE -3
		269	#define PRIO_MIN -4
		270
		271	/* for Coro.pm */
		272	static SV *coro_current;
		273	static SV *coro_readyhook;
		274	static AV *coro_ready [PRIO_MAX-PRIO_MIN+1];
		275	static int coro_nready;
		276	static struct coro *coro_first;
		277
		278	/ lowlevel stuff ********************************************************/
		279
		280	static SV *
		281	coro_get_sv (pTHX_ const char *name, int create)
		282	{
		283	#if PERL_VERSION_ATLEAST (5,10,0)
		284	/* silence stupid and wrong 5.10 warning that I am unable to switch off */
		285	get_sv (name, create);
		286	#endif
		287	return get_sv (name, create);
		288	}
		289
189	static AV *	290	static AV *
		291	coro_get_av (pTHX_ const char *name, int create)
		292	{
		293	#if PERL_VERSION_ATLEAST (5,10,0)
		294	/* silence stupid and wrong 5.10 warning that I am unable to switch off */
		295	get_av (name, create);
		296	#endif
		297	return get_av (name, create);
		298	}
		299
		300	static HV *
		301	coro_get_hv (pTHX_ const char *name, int create)
		302	{
		303	#if PERL_VERSION_ATLEAST (5,10,0)
		304	/* silence stupid and wrong 5.10 warning that I am unable to switch off */
		305	get_hv (name, create);
		306	#endif
		307	return get_hv (name, create);
		308	}
		309
		310	static AV *
190	coro_clone_padlist (CV *cv)	311	coro_clone_padlist (pTHX_ CV *cv)
191	{	312	{
192	AV *padlist = CvPADLIST (cv);	313	AV *padlist = CvPADLIST (cv);
193	AV newpadlist, newpad;	314	AV newpadlist, newpad;
194		315
195	newpadlist = newAV ();	316	newpadlist = newAV ();
196	AvREAL_off (newpadlist);	317	AvREAL_off (newpadlist);
197	#if PERL_VERSION_ATLEAST (5,9,0)	318	#if PERL_VERSION_ATLEAST (5,10,0)
198	Perl_pad_push (aTHX_ padlist, AvFILLp (padlist) + 1);	319	Perl_pad_push (aTHX_ padlist, AvFILLp (padlist) + 1);
199	#else	320	#else
200	Perl_pad_push (aTHX_ padlist, AvFILLp (padlist) + 1, 1);	321	Perl_pad_push (aTHX_ padlist, AvFILLp (padlist) + 1, 1);
201	#endif	322	#endif
202	newpad = (AV *)AvARRAY (padlist)[AvFILLp (padlist)];	323	newpad = (AV *)AvARRAY (padlist)[AvFILLp (padlist)];
…		…
207		328
208	return newpadlist;	329	return newpadlist;
209	}	330	}
210		331
211	static void	332	static void
212	free_padlist (AV *padlist)	333	free_padlist (pTHX_ AV *padlist)
213	{	334	{
214	/* may be during global destruction */	335	/* may be during global destruction */
215	if (SvREFCNT (padlist))	336	if (SvREFCNT (padlist))
216	{	337	{
217	I32 i = AvFILLp (padlist);	338	I32 i = AvFILLp (padlist);
…		…
238	AV *padlist;	359	AV *padlist;
239	AV av = (AV )mg->mg_obj;	360	AV av = (AV )mg->mg_obj;
240		361
241	/* casting is fun. */	362	/* casting is fun. */
242	while (&PL_sv_undef != (SV )(padlist = (AV )av_pop (av)))	363	while (&PL_sv_undef != (SV )(padlist = (AV )av_pop (av)))
243	free_padlist (padlist);	364	free_padlist (aTHX_ padlist);
244
245	SvREFCNT_dec (av);
246		365
247	return 0;	366	return 0;
248	}	367	}
249		368
250	#define PERL_MAGIC_coro PERL_MAGIC_ext	369	#define CORO_MAGIC_type_cv PERL_MAGIC_ext
		370	#define CORO_MAGIC_type_state PERL_MAGIC_ext
251		371
252	static MGVTBL vtbl_coro = {0, 0, 0, 0, coro_cv_free};	372	static MGVTBL coro_cv_vtbl = {
		373	0, 0, 0, 0,
		374	coro_cv_free
		375	};
253		376
254	#define CORO_MAGIC(cv) \	377	#define CORO_MAGIC(sv,type) \
255	SvMAGIC (cv) \	378	SvMAGIC (sv) \
256	? SvMAGIC (cv)->mg_type == PERL_MAGIC_coro \	379	? SvMAGIC (sv)->mg_type == type \
257	? SvMAGIC (cv) \	380	? SvMAGIC (sv) \
258	: mg_find ((SV *)cv, PERL_MAGIC_coro) \	381	: mg_find (sv, type) \
259	: 0	382	: 0
		383
		384	#define CORO_MAGIC_cv(cv) CORO_MAGIC (((SV *)(cv)), CORO_MAGIC_type_cv)
		385	#define CORO_MAGIC_state(sv) CORO_MAGIC (((SV *)(sv)), CORO_MAGIC_type_state)
		386
		387	static struct coro *
		388	SvSTATE_ (pTHX_ SV *coro)
		389	{
		390	HV *stash;
		391	MAGIC *mg;
		392
		393	if (SvROK (coro))
		394	coro = SvRV (coro);
		395
		396	if (expect_false (SvTYPE (coro) != SVt_PVHV))
		397	croak ("Coro::State object required");
		398
		399	stash = SvSTASH (coro);
		400	if (expect_false (stash != coro_stash && stash != coro_state_stash))
		401	{
		402	/* very slow, but rare, check */
		403	if (!sv_derived_from (sv_2mortal (newRV_inc (coro)), "Coro::State"))
		404	croak ("Coro::State object required");
		405	}
		406
		407	mg = CORO_MAGIC_state (coro);
		408	return (struct coro *)mg->mg_ptr;
		409	}
		410
		411	#define SvSTATE(sv) SvSTATE_ (aTHX_ (sv))
260		412
261	/* the next two functions merely cache the padlists */	413	/* the next two functions merely cache the padlists */
262	static void	414	static void
263	get_padlist (CV *cv)	415	get_padlist (pTHX_ CV *cv)
264	{	416	{
265	MAGIC *mg = CORO_MAGIC (cv);	417	MAGIC *mg = CORO_MAGIC_cv (cv);
266	AV *av;	418	AV *av;
267		419
268	if (mg && AvFILLp ((av = (AV *)mg->mg_obj)) >= 0)	420	if (expect_true (mg && AvFILLp ((av = (AV *)mg->mg_obj)) >= 0))
269	CvPADLIST (cv) = (AV *)AvARRAY (av)[AvFILLp (av)--];	421	CvPADLIST (cv) = (AV *)AvARRAY (av)[AvFILLp (av)--];
270	else	422	else
271	{	423	{
272	#if PREFER_PERL_FUNCTIONS	424	#if CORO_PREFER_PERL_FUNCTIONS
273	/* this is probably cleaner, but also slower? */	425	/* this is probably cleaner, but also slower? */
274	CV *cp = Perl_cv_clone (cv);	426	CV *cp = Perl_cv_clone (cv);
275	CvPADLIST (cv) = CvPADLIST (cp);	427	CvPADLIST (cv) = CvPADLIST (cp);
276	CvPADLIST (cp) = 0;	428	CvPADLIST (cp) = 0;
277	SvREFCNT_dec (cp);	429	SvREFCNT_dec (cp);
278	#else	430	#else
279	CvPADLIST (cv) = coro_clone_padlist (cv);	431	CvPADLIST (cv) = coro_clone_padlist (aTHX_ cv);
280	#endif	432	#endif
281	}	433	}
282	}	434	}
283		435
284	static void	436	static void
285	put_padlist (CV *cv)	437	put_padlist (pTHX_ CV *cv)
286	{	438	{
287	MAGIC *mg = CORO_MAGIC (cv);	439	MAGIC *mg = CORO_MAGIC_cv (cv);
288	AV *av;	440	AV *av;
289		441
290	if (!mg)	442	if (expect_false (!mg))
291	{	443	mg = sv_magicext ((SV )cv, (SV )newAV (), CORO_MAGIC_type_cv, &coro_cv_vtbl, 0, 0);
292	sv_magic ((SV *)cv, 0, PERL_MAGIC_coro, 0, 0);
293	mg = mg_find ((SV *)cv, PERL_MAGIC_coro);
294	mg->mg_virtual = &vtbl_coro;
295	mg->mg_obj = (SV *)newAV ();
296	}
297		444
298	av = (AV *)mg->mg_obj;	445	av = (AV *)mg->mg_obj;
299		446
300	if (AvFILLp (av) >= AvMAX (av))	447	if (expect_false (AvFILLp (av) >= AvMAX (av)))
301	av_extend (av, AvMAX (av) + 1);	448	av_extend (av, AvMAX (av) + 1);
302		449
303	AvARRAY (av)[++AvFILLp (av)] = (SV *)CvPADLIST (cv);	450	AvARRAY (av)[++AvFILLp (av)] = (SV *)CvPADLIST (cv);
304	}	451	}
305		452
306	#define SB do {	453	/ load & save, init *****************************************************/
307	#define SE } while (0)
308
309	#define REPLACE_SV(sv,val) SB SvREFCNT_dec (sv); (sv) = (val); (val) = 0; SE
310		454
311	static void	455	static void
312	load_perl (Coro__State c)	456	load_perl (pTHX_ Coro__State c)
313	{	457	{
		458	perl_slots *slot = c->slot;
		459	c->slot = 0;
		460
		461	PL_mainstack = c->mainstack;
		462
		463	GvSV (PL_defgv) = slot->defsv;
		464	GvAV (PL_defgv) = slot->defav;
		465	GvSV (PL_errgv) = slot->errsv;
		466	GvSV (irsgv) = slot->irsgv;
		467
314	#define VAR(name,type) PL_ ## name = c->name;	468	#define VAR(name,type) PL_ ## name = slot->name;
315	# include "state.h"	469	# include "state.h"
316	#undef VAR	470	#undef VAR
317
318	if (c->defav) REPLACE_SV (GvAV (PL_defgv), c->defav);
319	if (c->defsv) REPLACE_SV (DEFSV , c->defsv);
320	if (c->errsv) REPLACE_SV (ERRSV , c->errsv);
321	if (c->irssv)
322	{
323	if (c->irssv == PL_rs \|\| sv_eq (PL_rs, c->irssv))
324	SvREFCNT_dec (c->irssv);
325	else
326	{
327	REPLACE_SV (PL_rs, c->irssv);
328	if (!c->irssv_sv) c->irssv_sv = get_sv ("/", 0);
329	sv_setsv (c->irssv_sv, PL_rs);
330	}
331	}
332		471
333	{	472	{
334	dSP;	473	dSP;
		474
335	CV *cv;	475	CV *cv;
336		476
337	/* now do the ugly restore mess */	477	/* now do the ugly restore mess */
338	while ((cv = (CV *)POPs))	478	while (expect_true (cv = (CV *)POPs))
339	{	479	{
340	put_padlist (cv); /* mark this padlist as available */	480	put_padlist (aTHX_ cv); /* mark this padlist as available */
341	CvDEPTH (cv) = PTR2IV (POPs);	481	CvDEPTH (cv) = PTR2IV (POPs);
342	CvPADLIST (cv) = (AV *)POPs;	482	CvPADLIST (cv) = (AV *)POPs;
343	}	483	}
344		484
345	PUTBACK;	485	PUTBACK;
346	}	486	}
347	}	487	}
348		488
349	static void	489	static void
350	save_perl (Coro__State c)	490	save_perl (pTHX_ Coro__State c)
351	{	491	{
352	{	492	{
353	dSP;	493	dSP;
354	I32 cxix = cxstack_ix;	494	I32 cxix = cxstack_ix;
355	PERL_CONTEXT *ccstk = cxstack;	495	PERL_CONTEXT *ccstk = cxstack;
…		…
358	/*	498	/*
359	* the worst thing you can imagine happens first - we have to save	499	* the worst thing you can imagine happens first - we have to save
360	* (and reinitialize) all cv's in the whole callchain :(	500	* (and reinitialize) all cv's in the whole callchain :(
361	*/	501	*/
362		502
363	EXTEND (SP, 3 + 1);
364	PUSHs (Nullsv);	503	XPUSHs (Nullsv);
365	/* this loop was inspired by pp_caller */	504	/* this loop was inspired by pp_caller */
366	for (;;)	505	for (;;)
367	{	506	{
368	while (cxix >= 0)	507	while (expect_true (cxix >= 0))
369	{	508	{
370	PERL_CONTEXT *cx = &ccstk[cxix--];	509	PERL_CONTEXT *cx = &ccstk[cxix--];
371		510
372	if (CxTYPE (cx) == CXt_SUB)	511	if (expect_true (CxTYPE (cx) == CXt_SUB \|\| CxTYPE (cx) == CXt_FORMAT))
373	{	512	{
374	CV *cv = cx->blk_sub.cv;	513	CV *cv = cx->blk_sub.cv;
375		514
376	if (CvDEPTH (cv))	515	if (expect_true (CvDEPTH (cv)))
377	{	516	{
378	EXTEND (SP, 3);	517	EXTEND (SP, 3);
379	PUSHs ((SV *)CvPADLIST (cv));	518	PUSHs ((SV *)CvPADLIST (cv));
380	PUSHs (INT2PTR (SV *, CvDEPTH (cv)));	519	PUSHs (INT2PTR (SV *, (IV)CvDEPTH (cv)));
381	PUSHs ((SV *)cv);	520	PUSHs ((SV *)cv);
382		521
383	CvDEPTH (cv) = 0;	522	CvDEPTH (cv) = 0;
384	get_padlist (cv);	523	get_padlist (aTHX_ cv);
385	}	524	}
386	}	525	}
387	}	526	}
388		527
389	if (top_si->si_type == PERLSI_MAIN)	528	if (expect_true (top_si->si_type == PERLSI_MAIN))
390	break;	529	break;
391		530
392	top_si = top_si->si_prev;	531	top_si = top_si->si_prev;
393	ccstk = top_si->si_cxstack;	532	ccstk = top_si->si_cxstack;
394	cxix = top_si->si_cxix;	533	cxix = top_si->si_cxix;
395	}	534	}
396		535
397	PUTBACK;	536	PUTBACK;
398	}	537	}
399		538
400	c->defav = c->save & CORO_SAVE_DEFAV ? (AV *)SvREFCNT_inc (GvAV (PL_defgv)) : 0;	539	/* allocate some space on the context stack for our purposes */
401	c->defsv = c->save & CORO_SAVE_DEFSV ? SvREFCNT_inc (DEFSV) : 0;	540	/* we manually unroll here, as usually 2 slots is enough */
402	c->errsv = c->save & CORO_SAVE_ERRSV ? SvREFCNT_inc (ERRSV) : 0;	541	if (SLOT_COUNT >= 1) CXINC;
403	c->irssv = c->save & CORO_SAVE_IRSSV ? SvREFCNT_inc (PL_rs) : 0;	542	if (SLOT_COUNT >= 2) CXINC;
		543	if (SLOT_COUNT >= 3) CXINC;
		544	{
		545	int i;
		546	for (i = 3; i < SLOT_COUNT; ++i)
		547	CXINC;
		548	}
		549	cxstack_ix -= SLOT_COUNT; /* undo allocation */
404		550
		551	c->mainstack = PL_mainstack;
		552
		553	{
		554	perl_slots slot = c->slot = (perl_slots )(cxstack + cxstack_ix + 1);
		555
		556	slot->defav = GvAV (PL_defgv);
		557	slot->defsv = DEFSV;
		558	slot->errsv = ERRSV;
		559	slot->irsgv = GvSV (irsgv);
		560
405	#define VAR(name,type)c->name = PL_ ## name;	561	#define VAR(name,type) slot->name = PL_ ## name;
406	# include "state.h"	562	# include "state.h"
407	#undef VAR	563	#undef VAR
		564	}
408	}	565	}
409		566
410	/*	567	/*
411	* allocate various perl stacks. This is an exact copy	568	* allocate various perl stacks. This is an exact copy
412	* of perl.c:init_stacks, except that it uses less memory	569	* of perl.c:init_stacks, except that it uses less memory
413	* on the (sometimes correct) assumption that coroutines do	570	* on the (sometimes correct) assumption that coroutines do
414	* not usually need a lot of stackspace.	571	* not usually need a lot of stackspace.
415	*/	572	*/
416	#if PREFER_PERL_FUNCTIONS	573	#if CORO_PREFER_PERL_FUNCTIONS
417	# define coro_init_stacks init_stacks	574	# define coro_init_stacks init_stacks
418	#else	575	#else
419	static void	576	static void
420	coro_init_stacks ()	577	coro_init_stacks (pTHX)
421	{	578	{
422	PL_curstackinfo = new_stackinfo(128, 1024/sizeof(PERL_CONTEXT));	579	PL_curstackinfo = new_stackinfo(32, 8);
423	PL_curstackinfo->si_type = PERLSI_MAIN;	580	PL_curstackinfo->si_type = PERLSI_MAIN;
424	PL_curstack = PL_curstackinfo->si_stack;	581	PL_curstack = PL_curstackinfo->si_stack;
425	PL_mainstack = PL_curstack; /* remember in case we switch stacks */	582	PL_mainstack = PL_curstack; /* remember in case we switch stacks */
426		583
427	PL_stack_base = AvARRAY(PL_curstack);	584	PL_stack_base = AvARRAY(PL_curstack);
428	PL_stack_sp = PL_stack_base;	585	PL_stack_sp = PL_stack_base;
429	PL_stack_max = PL_stack_base + AvMAX(PL_curstack);	586	PL_stack_max = PL_stack_base + AvMAX(PL_curstack);
430		587
431	New(50,PL_tmps_stack,128,SV*);	588	New(50,PL_tmps_stack,32,SV*);
432	PL_tmps_floor = -1;	589	PL_tmps_floor = -1;
433	PL_tmps_ix = -1;	590	PL_tmps_ix = -1;
434	PL_tmps_max = 128;	591	PL_tmps_max = 32;
435		592
436	New(54,PL_markstack,32,I32);	593	New(54,PL_markstack,16,I32);
437	PL_markstack_ptr = PL_markstack;	594	PL_markstack_ptr = PL_markstack;
438	PL_markstack_max = PL_markstack + 32;	595	PL_markstack_max = PL_markstack + 16;
439		596
440	#ifdef SET_MARK_OFFSET	597	#ifdef SET_MARK_OFFSET
441	SET_MARK_OFFSET;	598	SET_MARK_OFFSET;
442	#endif	599	#endif
443		600
444	New(54,PL_scopestack,32,I32);	601	New(54,PL_scopestack,8,I32);
445	PL_scopestack_ix = 0;	602	PL_scopestack_ix = 0;
446	PL_scopestack_max = 32;	603	PL_scopestack_max = 8;
447		604
448	New(54,PL_savestack,64,ANY);	605	New(54,PL_savestack,24,ANY);
449	PL_savestack_ix = 0;	606	PL_savestack_ix = 0;
450	PL_savestack_max = 64;	607	PL_savestack_max = 24;
451		608
452	#if !PERL_VERSION_ATLEAST (5,9,0)	609	#if !PERL_VERSION_ATLEAST (5,10,0)
453	New(54,PL_retstack,16,OP*);	610	New(54,PL_retstack,4,OP*);
454	PL_retstack_ix = 0;	611	PL_retstack_ix = 0;
455	PL_retstack_max = 16;	612	PL_retstack_max = 4;
456	#endif	613	#endif
457	}	614	}
458	#endif	615	#endif
459		616
460	/*	617	/*
461	* destroy the stacks, the callchain etc...	618	* destroy the stacks, the callchain etc...
462	*/	619	*/
463	static void	620	static void
464	coro_destroy_stacks ()	621	coro_destroy_stacks (pTHX)
465	{	622	{
466	if (!IN_DESTRUCT)
467	{
468	/* restore all saved variables and stuff */
469	LEAVE_SCOPE (0);
470	assert (PL_tmps_floor == -1);
471
472	/* free all temporaries */
473	FREETMPS;
474	assert (PL_tmps_ix == -1);
475
476	POPSTACK_TO (PL_mainstack);
477	}
478
479	while (PL_curstackinfo->si_next)	623	while (PL_curstackinfo->si_next)
480	PL_curstackinfo = PL_curstackinfo->si_next;	624	PL_curstackinfo = PL_curstackinfo->si_next;
481		625
482	while (PL_curstackinfo)	626	while (PL_curstackinfo)
483	{	627	{
…		…
493		637
494	Safefree (PL_tmps_stack);	638	Safefree (PL_tmps_stack);
495	Safefree (PL_markstack);	639	Safefree (PL_markstack);
496	Safefree (PL_scopestack);	640	Safefree (PL_scopestack);
497	Safefree (PL_savestack);	641	Safefree (PL_savestack);
498	#if !PERL_VERSION_ATLEAST (5,9,0)	642	#if !PERL_VERSION_ATLEAST (5,10,0)
499	Safefree (PL_retstack);	643	Safefree (PL_retstack);
500	#endif	644	#endif
501	}	645	}
502		646
		647	static size_t
		648	coro_rss (pTHX_ struct coro *coro)
		649	{
		650	size_t rss = sizeof (*coro);
		651
		652	if (coro->mainstack)
		653	{
		654	perl_slots tmp_slot;
		655	perl_slots *slot;
		656
		657	if (coro->flags & CF_RUNNING)
		658	{
		659	slot = &tmp_slot;
		660
		661	#define VAR(name,type) slot->name = PL_ ## name;
		662	# include "state.h"
		663	#undef VAR
		664	}
		665	else
		666	slot = coro->slot;
		667
		668	rss += sizeof (slot->curstackinfo);
		669	rss += (slot->curstackinfo->si_cxmax + 1) * sizeof (PERL_CONTEXT);
		670	rss += sizeof (SV) + sizeof (struct xpvav) + (1 + AvMAX (slot->curstack)) * sizeof (SV *);
		671	rss += slot->tmps_max * sizeof (SV *);
		672	rss += (slot->markstack_max - slot->markstack_ptr) * sizeof (I32);
		673	rss += slot->scopestack_max * sizeof (I32);
		674	rss += slot->savestack_max * sizeof (ANY);
		675
		676	#if !PERL_VERSION_ATLEAST (5,10,0)
		677	rss += slot->retstack_max * sizeof (OP *);
		678	#endif
		679	}
		680
		681	return rss;
		682	}
		683
		684	/ coroutine stack handling **********************************************/
		685
		686	static int (orig_sigelem_get) (pTHX_ SV sv, MAGIC *mg);
		687	static int (orig_sigelem_set) (pTHX_ SV sv, MAGIC *mg);
		688
		689	/*
		690	* This overrides the default magic get method of %SIG elements.
		691	* The original one doesn't provide for reading back of PL_diehook/PL_warnhook
		692	* and instead of tryign to save and restore the hash elements, we just provide
		693	* readback here.
		694	* We only do this when the hook is != 0, as they are often set to 0 temporarily,
		695	* not expecting this to actually change the hook. This is a potential problem
		696	* when a schedule happens then, but we ignore this.
		697	*/
		698	static int
		699	coro_sigelem_get (pTHX_ SV sv, MAGIC mg)
		700	{
		701	const char *s = MgPV_nolen_const (mg);
		702
		703	if (*s == '_')
		704	{
		705	if (strEQ (s, "__DIE__" ) && PL_diehook ) return sv_setsv (sv, PL_diehook ), 0;
		706	if (strEQ (s, "__WARN__") && PL_warnhook) return sv_setsv (sv, PL_warnhook), 0;
		707	}
		708
		709	return orig_sigelem_get ? orig_sigelem_get (aTHX_ sv, mg) : 0;
		710	}
		711
		712	static int
		713	coro_sigelem_set (pTHX_ SV sv, MAGIC mg)
		714	{
		715	const char *s = MgPV_nolen_const (mg);
		716
		717	if (*s == '_')
		718	{
		719	SV **svp = 0;
		720
		721	if (strEQ (s, "__DIE__" )) svp = &PL_diehook;
		722	if (strEQ (s, "__WARN__")) svp = &PL_warnhook;
		723
		724	if (svp)
		725	{
		726	SV old = svp;
		727	*svp = newSVsv (sv);
		728	SvREFCNT_dec (old);
		729	return 0;
		730	}
		731	}
		732
		733	return orig_sigelem_set ? orig_sigelem_set (aTHX_ sv, mg) : 0;
		734	}
		735
503	static void	736	static void
504	setup_coro (struct coro *coro)	737	coro_setup (pTHX_ struct coro *coro)
505	{	738	{
506	/*	739	/*
507	* emulate part of the perl startup here.	740	* emulate part of the perl startup here.
508	*/	741	*/
509
510	coro_init_stacks ();	742	coro_init_stacks (aTHX);
511		743
		744	PL_runops = RUNOPS_DEFAULT;
512	PL_curcop = &PL_compiling;	745	PL_curcop = &PL_compiling;
513	PL_in_eval = EVAL_NULL;	746	PL_in_eval = EVAL_NULL;
		747	PL_comppad = 0;
514	PL_curpm = 0;	748	PL_curpm = 0;
		749	PL_curpad = 0;
515	PL_localizing = 0;	750	PL_localizing = 0;
516	PL_dirty = 0;	751	PL_dirty = 0;
517	PL_restartop = 0;	752	PL_restartop = 0;
		753	#if PERL_VERSION_ATLEAST (5,10,0)
		754	PL_parser = 0;
		755	#endif
		756
		757	/* recreate the die/warn hooks */
		758	PL_diehook = 0; SvSetMagicSV (*hv_fetch (hv_sig, "__DIE__" , sizeof ("__DIE__" ) - 1, 1), rv_diehook );
		759	PL_warnhook = 0; SvSetMagicSV (*hv_fetch (hv_sig, "__WARN__", sizeof ("__WARN__") - 1, 1), rv_warnhook);
		760
		761	GvSV (PL_defgv) = newSV (0);
		762	GvAV (PL_defgv) = coro->args; coro->args = 0;
		763	GvSV (PL_errgv) = newSV (0);
		764	GvSV (irsgv) = newSVpvn ("\n", 1); sv_magic (GvSV (irsgv), (SV *)irsgv, PERL_MAGIC_sv, "/", 0);
		765	PL_rs = newSVsv (GvSV (irsgv));
		766	PL_defoutgv = (GV *)SvREFCNT_inc (stdoutgv);
518		767
519	{	768	{
520	dSP;	769	dSP;
521	LOGOP myop;	770	LOGOP myop;
522		771
523	SvREFCNT_dec (GvAV (PL_defgv));
524	GvAV (PL_defgv) = coro->args; coro->args = 0;
525
526	Zero (&myop, 1, LOGOP);	772	Zero (&myop, 1, LOGOP);
527	myop.op_next = Nullop;	773	myop.op_next = Nullop;
528	myop.op_flags = OPf_WANT_VOID;	774	myop.op_flags = OPf_WANT_VOID;
529		775
530	PUSHMARK (SP);	776	PUSHMARK (SP);
531	XPUSHs ((SV *)get_cv ("Coro::State::_coro_init", FALSE));	777	XPUSHs (sv_2mortal (av_shift (GvAV (PL_defgv))));
532	PUTBACK;	778	PUTBACK;
533	PL_op = (OP *)&myop;	779	PL_op = (OP *)&myop;
534	PL_op = PL_ppaddr[OP_ENTERSUB](aTHX);	780	PL_op = PL_ppaddr[OP_ENTERSUB](aTHX);
535	SPAGAIN;	781	SPAGAIN;
536	}	782	}
537		783
538	ENTER; /* necessary e.g. for dounwind */	784	/* this newly created coroutine might be run on an existing cctx which most
		785	* likely was suspended in set_stacklevel, called from entersub.
		786	* set_stacklevl doesn't do anything on return, but entersub does LEAVE,
		787	* so we ENTER here for symmetry
		788	*/
		789	ENTER;
539	}	790	}
540		791
541	static void	792	static void
		793	coro_destroy (pTHX_ struct coro *coro)
		794	{
		795	if (!IN_DESTRUCT)
		796	{
		797	/* restore all saved variables and stuff */
		798	LEAVE_SCOPE (0);
		799	assert (PL_tmps_floor == -1);
		800
		801	/* free all temporaries */
		802	FREETMPS;
		803	assert (PL_tmps_ix == -1);
		804
		805	/* unwind all extra stacks */
		806	POPSTACK_TO (PL_mainstack);
		807
		808	/* unwind main stack */
		809	dounwind (-1);
		810	}
		811
		812	SvREFCNT_dec (GvSV (PL_defgv));
		813	SvREFCNT_dec (GvAV (PL_defgv));
		814	SvREFCNT_dec (GvSV (PL_errgv));
		815	SvREFCNT_dec (PL_defoutgv);
		816	SvREFCNT_dec (PL_rs);
		817	SvREFCNT_dec (GvSV (irsgv));
		818
		819	SvREFCNT_dec (PL_diehook);
		820	SvREFCNT_dec (PL_warnhook);
		821
		822	SvREFCNT_dec (coro->saved_deffh);
		823	SvREFCNT_dec (coro->throw);
		824
		825	coro_destroy_stacks (aTHX);
		826	}
		827
		828	static void
542	free_coro_mortal ()	829	free_coro_mortal (pTHX)
543	{	830	{
544	if (coro_mortal)	831	if (expect_true (coro_mortal))
545	{	832	{
546	SvREFCNT_dec (coro_mortal);	833	SvREFCNT_dec (coro_mortal);
547	coro_mortal = 0;	834	coro_mortal = 0;
548	}	835	}
549	}	836	}
550		837
		838	static int
		839	runops_trace (pTHX)
		840	{
		841	COP *oldcop = 0;
		842	int oldcxix = -2;
		843	struct coro coro = SvSTATE (coro_current); / trace cctx is tied to specific coro */
		844	coro_cctx *cctx = coro->cctx;
		845
		846	while ((PL_op = CALL_FPTR (PL_op->op_ppaddr) (aTHX)))
		847	{
		848	PERL_ASYNC_CHECK ();
		849
		850	if (cctx->flags & CC_TRACE_ALL)
		851	{
		852	if (PL_op->op_type == OP_LEAVESUB && cctx->flags & CC_TRACE_SUB)
		853	{
		854	PERL_CONTEXT *cx = &cxstack[cxstack_ix];
		855	SV bot, top;
		856	AV av = newAV (); / return values */
		857	SV **cb;
		858	dSP;
		859
		860	GV *gv = CvGV (cx->blk_sub.cv);
		861	SV *fullname = sv_2mortal (newSV (0));
		862	if (isGV (gv))
		863	gv_efullname3 (fullname, gv, 0);
		864
		865	bot = PL_stack_base + cx->blk_oldsp + 1;
		866	top = cx->blk_gimme == G_ARRAY ? SP + 1
		867	: cx->blk_gimme == G_SCALAR ? bot + 1
		868	: bot;
		869
		870	av_extend (av, top - bot);
		871	while (bot < top)
		872	av_push (av, SvREFCNT_inc (*bot++));
		873
		874	PL_runops = RUNOPS_DEFAULT;
		875	ENTER;
		876	SAVETMPS;
		877	EXTEND (SP, 3);
		878	PUSHMARK (SP);
		879	PUSHs (&PL_sv_no);
		880	PUSHs (fullname);
		881	PUSHs (sv_2mortal (newRV_noinc ((SV *)av)));
		882	PUTBACK;
		883	cb = hv_fetch ((HV *)SvRV (coro_current), "_trace_sub_cb", sizeof ("_trace_sub_cb") - 1, 0);
		884	if (cb) call_sv (*cb, G_KEEPERR \| G_EVAL \| G_VOID \| G_DISCARD);
		885	SPAGAIN;
		886	FREETMPS;
		887	LEAVE;
		888	PL_runops = runops_trace;
		889	}
		890
		891	if (oldcop != PL_curcop)
		892	{
		893	oldcop = PL_curcop;
		894
		895	if (PL_curcop != &PL_compiling)
		896	{
		897	SV **cb;
		898
		899	if (oldcxix != cxstack_ix && cctx->flags & CC_TRACE_SUB)
		900	{
		901	PERL_CONTEXT *cx = &cxstack[cxstack_ix];
		902
		903	if (CxTYPE (cx) == CXt_SUB && oldcxix < cxstack_ix)
		904	{
		905	runops_proc_t old_runops = PL_runops;
		906	dSP;
		907	GV *gv = CvGV (cx->blk_sub.cv);
		908	SV *fullname = sv_2mortal (newSV (0));
		909
		910	if (isGV (gv))
		911	gv_efullname3 (fullname, gv, 0);
		912
		913	PL_runops = RUNOPS_DEFAULT;
		914	ENTER;
		915	SAVETMPS;
		916	EXTEND (SP, 3);
		917	PUSHMARK (SP);
		918	PUSHs (&PL_sv_yes);
		919	PUSHs (fullname);
		920	PUSHs (CxHASARGS (cx) ? sv_2mortal (newRV_inc ((SV *)cx->blk_sub.argarray)) : &PL_sv_undef);
		921	PUTBACK;
		922	cb = hv_fetch ((HV *)SvRV (coro_current), "_trace_sub_cb", sizeof ("_trace_sub_cb") - 1, 0);
		923	if (cb) call_sv (*cb, G_KEEPERR \| G_EVAL \| G_VOID \| G_DISCARD);
		924	SPAGAIN;
		925	FREETMPS;
		926	LEAVE;
		927	PL_runops = runops_trace;
		928	}
		929
		930	oldcxix = cxstack_ix;
		931	}
		932
		933	if (cctx->flags & CC_TRACE_LINE)
		934	{
		935	dSP;
		936
		937	PL_runops = RUNOPS_DEFAULT;
		938	ENTER;
		939	SAVETMPS;
		940	EXTEND (SP, 3);
		941	PL_runops = RUNOPS_DEFAULT;
		942	PUSHMARK (SP);
		943	PUSHs (sv_2mortal (newSVpv (OutCopFILE (oldcop), 0)));
		944	PUSHs (sv_2mortal (newSViv (CopLINE (oldcop))));
		945	PUTBACK;
		946	cb = hv_fetch ((HV *)SvRV (coro_current), "_trace_line_cb", sizeof ("_trace_line_cb") - 1, 0);
		947	if (cb) call_sv (*cb, G_KEEPERR \| G_EVAL \| G_VOID \| G_DISCARD);
		948	SPAGAIN;
		949	FREETMPS;
		950	LEAVE;
		951	PL_runops = runops_trace;
		952	}
		953	}
		954	}
		955	}
		956	}
		957
		958	TAINT_NOT;
		959	return 0;
		960	}
		961
551	/* inject a fake call to Coro::State::_cctx_init into the execution */	962	/* inject a fake call to Coro::State::_cctx_init into the execution */
		963	/* _cctx_init should be careful, as it could be called at almost any time */
		964	/* during execution of a perl program */
552	static void NOINLINE	965	static void NOINLINE
553	prepare_cctx (coro_cctx *cctx)	966	cctx_prepare (pTHX_ coro_cctx *cctx)
554	{	967	{
555	dSP;	968	dSP;
556	LOGOP myop;	969	LOGOP myop;
		970
		971	PL_top_env = &PL_start_env;
		972
		973	if (cctx->flags & CC_TRACE)
		974	PL_runops = runops_trace;
557		975
558	Zero (&myop, 1, LOGOP);	976	Zero (&myop, 1, LOGOP);
559	myop.op_next = PL_op;	977	myop.op_next = PL_op;
560	myop.op_flags = OPf_WANT_VOID \| OPf_STACKED;	978	myop.op_flags = OPf_WANT_VOID \| OPf_STACKED;
561		979
…		…
567	PL_op = (OP *)&myop;	985	PL_op = (OP *)&myop;
568	PL_op = PL_ppaddr[OP_ENTERSUB](aTHX);	986	PL_op = PL_ppaddr[OP_ENTERSUB](aTHX);
569	SPAGAIN;	987	SPAGAIN;
570	}	988	}
571		989
		990	/*
		991	* this is a _very_ stripped down perl interpreter ;)
		992	*/
572	static void	993	static void
573	coro_run (void *arg)	994	cctx_run (void *arg)
574	{	995	{
		996	dTHX;
		997
575	/* coro_run is the alternative tail of transfer(), so unlock here. */	998	/* cctx_run is the alternative tail of transfer(), so unlock here. */
576	UNLOCK;	999	UNLOCK;
577		1000
578	/*	1001	/* we now skip the entersub that lead to transfer() */
579	* this is a _very_ stripped down perl interpreter ;)	1002	PL_op = PL_op->op_next;
580	*/
581	PL_top_env = &PL_start_env;
582		1003
583	/* inject call to cctx_init */	1004	/* inject a fake subroutine call to cctx_init */
584	prepare_cctx ((coro_cctx *)arg);	1005	cctx_prepare (aTHX_ (coro_cctx *)arg);
585		1006
586	/* somebody will hit me for both perl_run and PL_restartop */	1007	/* somebody or something will hit me for both perl_run and PL_restartop */
587	PL_restartop = PL_op;	1008	PL_restartop = PL_op;
588	perl_run (PL_curinterp);	1009	perl_run (PL_curinterp);
589		1010
590	fputs ("FATAL: C coroutine fell over the edge of the world, aborting. Did you call exit in a coroutine?\n", stderr);	1011	/*
591	abort ();	1012	* If perl-run returns we assume exit() was being called or the coro
		1013	* fell off the end, which seems to be the only valid (non-bug)
		1014	* reason for perl_run to return. We try to exit by jumping to the
		1015	* bootstrap-time "top" top_env, as we cannot restore the "main"
		1016	* coroutine as Coro has no such concept
		1017	*/
		1018	PL_top_env = main_top_env;
		1019	JMPENV_JUMP (2); /* I do not feel well about the hardcoded 2 at all */
592	}	1020	}
593		1021
594	static coro_cctx *	1022	static coro_cctx *
595	cctx_new ()	1023	cctx_new ()
596	{	1024	{
597	coro_cctx *cctx;	1025	coro_cctx *cctx;
		1026	void *stack_start;
		1027	size_t stack_size;
598		1028
599	++cctx_count;	1029	++cctx_count;
600		1030
601	Newz (0, cctx, 1, coro_cctx);	1031	Newz (0, cctx, 1, coro_cctx);
602		1032
603	#if HAVE_MMAP	1033	#if HAVE_MMAP
604
605	cctx->ssize = ((STACKSIZE * sizeof (long) + PAGESIZE - 1) / PAGESIZE + STACKGUARD) * PAGESIZE;	1034	cctx->ssize = ((coro_stacksize * sizeof (long) + PAGESIZE - 1) / PAGESIZE + CORO_STACKGUARD) * PAGESIZE;
606	/* mmap supposedly does allocate-on-write for us */	1035	/* mmap supposedly does allocate-on-write for us */
607	cctx->sptr = mmap (0, cctx->ssize, PROT_EXEC\|PROT_READ\|PROT_WRITE, MAP_PRIVATE\|MAP_ANONYMOUS, 0, 0);	1036	cctx->sptr = mmap (0, cctx->ssize, PROT_EXEC\|PROT_READ\|PROT_WRITE, MAP_PRIVATE\|MAP_ANONYMOUS, 0, 0);
608		1037
609	if (cctx->sptr == (void *)-1)	1038	if (cctx->sptr != (void *)-1)
610	{
611	perror ("FATAL: unable to mmap stack for coroutine");
612	_exit (EXIT_FAILURE);
613	}	1039	{
614
615	# if STACKGUARD	1040	# if CORO_STACKGUARD
616	mprotect (cctx->sptr, STACKGUARD * PAGESIZE, PROT_NONE);	1041	mprotect (cctx->sptr, CORO_STACKGUARD * PAGESIZE, PROT_NONE);
617	# endif	1042	# endif
		1043	stack_start = CORO_STACKGUARD * PAGESIZE + (char *)cctx->sptr;
		1044	stack_size = cctx->ssize - CORO_STACKGUARD * PAGESIZE;
		1045	cctx->flags \|= CC_MAPPED;
		1046	}
		1047	else
		1048	#endif
		1049	{
		1050	cctx->ssize = coro_stacksize * (long)sizeof (long);
		1051	New (0, cctx->sptr, coro_stacksize, long);
618		1052
619	#else
620
621	cctx->ssize = STACKSIZE * (long)sizeof (long);
622	New (0, cctx->sptr, STACKSIZE, long);
623
624	if (!cctx->sptr)	1053	if (!cctx->sptr)
625	{	1054	{
626	perror ("FATAL: unable to malloc stack for coroutine");	1055	perror ("FATAL: unable to allocate stack for coroutine");
627	_exit (EXIT_FAILURE);	1056	_exit (EXIT_FAILURE);
628	}	1057	}
629		1058
630	#endif	1059	stack_start = cctx->sptr;
		1060	stack_size = cctx->ssize;
		1061	}
631		1062
632	#if USE_VALGRIND	1063	REGISTER_STACK (cctx, (char )stack_start, (char )stack_start + stack_size);
633	cctx->valgrind_id = VALGRIND_STACK_REGISTER (	1064	coro_create (&cctx->cctx, cctx_run, (void *)cctx, stack_start, stack_size);
634	STACKGUARD * PAGESIZE + (char *)cctx->sptr,
635	cctx->ssize + (char *)cctx->sptr
636	);
637	#endif
638
639	coro_create (&cctx->cctx, coro_run, (void *)cctx, cctx->sptr, cctx->ssize);
640		1065
641	return cctx;	1066	return cctx;
642	}	1067	}
643		1068
644	static void	1069	static void
…		…
647	if (!cctx)	1072	if (!cctx)
648	return;	1073	return;
649		1074
650	--cctx_count;	1075	--cctx_count;
651		1076
652	#if USE_VALGRIND	1077	#if CORO_USE_VALGRIND
653	VALGRIND_STACK_DEREGISTER (cctx->valgrind_id);	1078	VALGRIND_STACK_DEREGISTER (cctx->valgrind_id);
654	#endif	1079	#endif
655		1080
656	#if HAVE_MMAP	1081	#if HAVE_MMAP
		1082	if (cctx->flags & CC_MAPPED)
657	munmap (cctx->sptr, cctx->ssize);	1083	munmap (cctx->sptr, cctx->ssize);
658	#else	1084	else
		1085	#endif
659	Safefree (cctx->sptr);	1086	Safefree (cctx->sptr);
660	#endif
661		1087
662	Safefree (cctx);	1088	Safefree (cctx);
663	}	1089	}
664		1090
		1091	/* wether this cctx should be destructed */
		1092	#define CCTX_EXPIRED(cctx) ((cctx)->ssize < coro_stacksize \|\| ((cctx)->flags & CC_NOREUSE))
		1093
665	static coro_cctx *	1094	static coro_cctx *
666	cctx_get ()	1095	cctx_get (pTHX)
667	{	1096	{
668	coro_cctx *cctx;	1097	while (expect_true (cctx_first))
669
670	if (cctx_first)
671	{	1098	{
672	cctx = cctx_first;	1099	coro_cctx *cctx = cctx_first;
673	cctx_first = cctx->next;	1100	cctx_first = cctx->next;
674	--cctx_idle;	1101	--cctx_idle;
675	}	1102
676	else	1103	if (expect_true (!CCTX_EXPIRED (cctx)))
677	{	1104	return cctx;
678	cctx = cctx_new ();	1105
679	PL_op = PL_op->op_next;	1106	cctx_destroy (cctx);
680	}	1107	}
681		1108
682	return cctx;	1109	return cctx_new ();
683	}	1110	}
684		1111
685	static void	1112	static void
686	cctx_put (coro_cctx *cctx)	1113	cctx_put (coro_cctx *cctx)
687	{	1114	{
688	/* free another cctx if overlimit */	1115	/* free another cctx if overlimit */
689	if (cctx_idle >= MAX_IDLE_CCTX)	1116	if (expect_false (cctx_idle >= MAX_IDLE_CCTX))
690	{	1117	{
691	coro_cctx *first = cctx_first;	1118	coro_cctx *first = cctx_first;
692	cctx_first = first->next;	1119	cctx_first = first->next;
693	--cctx_idle;	1120	--cctx_idle;
694		1121
695	assert (!first->inuse);
696	cctx_destroy (first);	1122	cctx_destroy (first);
697	}	1123	}
698		1124
699	++cctx_idle;	1125	++cctx_idle;
700	cctx->next = cctx_first;	1126	cctx->next = cctx_first;
701	cctx_first = cctx;	1127	cctx_first = cctx;
702	}	1128	}
703		1129
704	/* never call directly, always through the coro_state_transfer global variable */	1130	/ coroutine switching ***************************************************/
		1131
		1132	static void
		1133	transfer_check (pTHX_ struct coro prev, struct coro next)
		1134	{
		1135	if (expect_true (prev != next))
		1136	{
		1137	if (expect_false (!(prev->flags & (CF_RUNNING \| CF_NEW))))
		1138	croak ("Coro::State::transfer called with non-running/new prev Coro::State, but can only transfer from running or new states");
		1139
		1140	if (expect_false (next->flags & CF_RUNNING))
		1141	croak ("Coro::State::transfer called with running next Coro::State, but can only transfer to inactive states");
		1142
		1143	if (expect_false (next->flags & CF_DESTROYED))
		1144	croak ("Coro::State::transfer called with destroyed next Coro::State, but can only transfer to inactive states");
		1145
		1146	#if !PERL_VERSION_ATLEAST (5,10,0)
		1147	if (expect_false (PL_lex_state != LEX_NOTPARSING))
		1148	croak ("Coro::State::transfer called while parsing, but this is not supported in your perl version");
		1149	#endif
		1150	}
		1151	}
		1152
		1153	/* always use the TRANSFER macro */
705	static void NOINLINE	1154	static void NOINLINE
706	transfer (struct coro prev, struct coro next)	1155	transfer (pTHX_ struct coro prev, struct coro next, int force_cctx)
707	{	1156	{
708	dSTACKLEVEL;	1157	dSTACKLEVEL;
		1158	static volatile int has_throw;
709		1159
710	/* sometimes transfer is only called to set idle_sp */	1160	/* sometimes transfer is only called to set idle_sp */
711	if (!next)	1161	if (expect_false (!next))
712	{	1162	{
713	((coro_cctx *)prev)->idle_sp = STACKLEVEL;	1163	((coro_cctx *)prev)->idle_sp = STACKLEVEL;
714	assert (((coro_cctx )prev)->idle_te = PL_top_env); / just for the side-effect when asserts are enabled */	1164	assert (((coro_cctx )prev)->idle_te = PL_top_env); / just for the side-effect when asserts are enabled */
715	}	1165	}
716	else if (prev != next)	1166	else if (expect_true (prev != next))
717	{	1167	{
718	coro_cctx *prev__cctx;	1168	coro_cctx *prev__cctx;
719		1169
720	if (prev->flags & CF_NEW)	1170	if (expect_false (prev->flags & CF_NEW))
721	{	1171	{
722	/* create a new empty context */	1172	/* create a new empty context */
723	Newz (0, prev->cctx, 1, coro_cctx);	1173	Newz (0, prev->cctx, 1, coro_cctx);
724	prev->cctx->inuse = 1;
725	prev->flags &= ~CF_NEW;	1174	prev->flags &= ~CF_NEW;
726	prev->flags \|= CF_RUNNING;	1175	prev->flags \|= CF_RUNNING;
727	}	1176	}
728		1177
729	/TODO: must not croak here /
730	if (!prev->flags & CF_RUNNING)
731	croak ("Coro::State::transfer called with non-running prev Coro::State, but can only transfer from running states");
732
733	if (next->flags & CF_RUNNING)
734	croak ("Coro::State::transfer called with running next Coro::State, but can only transfer to inactive states");
735
736	prev->flags &= ~CF_RUNNING;	1178	prev->flags &= ~CF_RUNNING;
737	next->flags \|= CF_RUNNING;	1179	next->flags \|= CF_RUNNING;
738		1180
739	LOCK;	1181	LOCK;
740		1182
		1183	/* first get rid of the old state */
		1184	save_perl (aTHX_ prev);
		1185
741	if (next->flags & CF_NEW)	1186	if (expect_false (next->flags & CF_NEW))
742	{	1187	{
743	/* need to start coroutine */	1188	/* need to start coroutine */
744	next->flags &= ~CF_NEW;	1189	next->flags &= ~CF_NEW;
745	/* first get rid of the old state */
746	save_perl (prev);
747	/* setup coroutine call */	1190	/* setup coroutine call */
748	setup_coro (next);	1191	coro_setup (aTHX_ next);
749	/* need a new stack */
750	assert (!next->cctx);
751	}	1192	}
752	else	1193	else
753	{
754	/* coroutine already started */
755	save_perl (prev);
756	load_perl (next);	1194	load_perl (aTHX_ next);
757	}
758		1195
759	prev__cctx = prev->cctx;	1196	prev__cctx = prev->cctx;
760		1197
761	/* possibly "free" the cctx */	1198	/* possibly "free" the cctx */
		1199	if (expect_true (
762	if (prev__cctx->idle_sp == STACKLEVEL)	1200	prev__cctx->idle_sp == STACKLEVEL
		1201	&& !(prev__cctx->flags & CC_TRACE)
		1202	&& !force_cctx
		1203	))
763	{	1204	{
764	/* I assume that STACKLEVEL is a stronger indicator than PL_top_env changes */	1205	/* I assume that STACKLEVEL is a stronger indicator than PL_top_env changes */
765	assert (("ERROR: current top_env must equal previous top_env", PL_top_env == prev__cctx->idle_te));	1206	assert (("ERROR: current top_env must equal previous top_env", PL_top_env == prev__cctx->idle_te));
766		1207
767	prev->cctx = 0;	1208	prev->cctx = 0;
768		1209
		1210	/* if the cctx is about to be destroyed we need to make sure we won't see it in cctx_get */
		1211	/* without this the next cctx_get might destroy the prev__cctx while still in use */
		1212	if (expect_false (CCTX_EXPIRED (prev__cctx)))
		1213	if (!next->cctx)
		1214	next->cctx = cctx_get (aTHX);
		1215
769	cctx_put (prev__cctx);	1216	cctx_put (prev__cctx);
770	prev__cctx->inuse = 0;
771	}	1217	}
772		1218
		1219	++next->usecount;
		1220
773	if (!next->cctx)	1221	if (expect_true (!next->cctx))
774	{
775	next->cctx = cctx_get ();	1222	next->cctx = cctx_get (aTHX);
776	assert (!next->cctx->inuse);
777	next->cctx->inuse = 1;
778	}
779		1223
		1224	has_throw = !!next->throw;
		1225
780	if (prev__cctx != next->cctx)	1226	if (expect_false (prev__cctx != next->cctx))
781	{	1227	{
782	prev__cctx->top_env = PL_top_env;	1228	prev__cctx->top_env = PL_top_env;
783	PL_top_env = next->cctx->top_env;	1229	PL_top_env = next->cctx->top_env;
784	coro_transfer (&prev__cctx->cctx, &next->cctx->cctx);	1230	coro_transfer (&prev__cctx->cctx, &next->cctx->cctx);
785	}	1231	}
786		1232
787	free_coro_mortal ();	1233	free_coro_mortal (aTHX);
788
789	UNLOCK;	1234	UNLOCK;
		1235
		1236	if (expect_false (has_throw))
		1237	{
		1238	struct coro *coro = SvSTATE (coro_current);
		1239
		1240	if (coro->throw)
		1241	{
		1242	SV *exception = coro->throw;
		1243	coro->throw = 0;
		1244	sv_setsv (ERRSV, exception);
		1245	croak (0);
		1246	}
		1247	}
790	}	1248	}
791	}	1249	}
792		1250
793	struct transfer_args	1251	struct transfer_args
794	{	1252	{
795	struct coro prev, next;	1253	struct coro prev, next;
796	};	1254	};
797		1255
		1256	#define TRANSFER(ta, force_cctx) transfer (aTHX_ (ta).prev, (ta).next, (force_cctx))
798	#define TRANSFER(ta) transfer ((ta).prev, (ta).next)	1257	#define TRANSFER_CHECK(ta) transfer_check (aTHX_ (ta).prev, (ta).next)
799		1258
		1259	/ high level stuff ******************************************************/
		1260
800	static void	1261	static int
801	coro_state_destroy (struct coro *coro)	1262	coro_state_destroy (pTHX_ struct coro *coro)
802	{	1263	{
803	if (coro->refcnt--)	1264	if (coro->flags & CF_DESTROYED)
804	return;	1265	return 0;
		1266
		1267	coro->flags \|= CF_DESTROYED;
		1268
		1269	if (coro->flags & CF_READY)
		1270	{
		1271	/* reduce nready, as destroying a ready coro effectively unreadies it */
		1272	/* alternative: look through all ready queues and remove the coro */
		1273	LOCK;
		1274	--coro_nready;
		1275	UNLOCK;
		1276	}
		1277	else
		1278	coro->flags \|= CF_READY; /* make sure it is NOT put into the readyqueue */
805		1279
806	if (coro->mainstack && coro->mainstack != main_mainstack)	1280	if (coro->mainstack && coro->mainstack != main_mainstack)
807	{	1281	{
808	struct coro temp;	1282	struct coro temp;
809	Zero (&temp, 1, struct coro);
810	temp.save = CORO_SAVE_ALL;
811		1283
812	if (coro->flags & CF_RUNNING)	1284	if (coro->flags & CF_RUNNING)
813	croak ("FATAL: tried to destroy currently running coroutine");	1285	croak ("FATAL: tried to destroy currently running coroutine");
814		1286
815	save_perl (&temp);	1287	save_perl (aTHX_ &temp);
816	load_perl (coro);	1288	load_perl (aTHX_ coro);
817		1289
818	coro_destroy_stacks ();	1290	coro_destroy (aTHX_ coro);
819		1291
820	load_perl (&temp); /* this will get rid of defsv etc.. */	1292	load_perl (aTHX_ &temp);
821		1293
822	coro->mainstack = 0;	1294	coro->slot = 0;
823	}	1295	}
824		1296
825	cctx_destroy (coro->cctx);	1297	cctx_destroy (coro->cctx);
826	SvREFCNT_dec (coro->args);	1298	SvREFCNT_dec (coro->args);
827	Safefree (coro);	1299
		1300	if (coro->next) coro->next->prev = coro->prev;
		1301	if (coro->prev) coro->prev->next = coro->next;
		1302	if (coro == coro_first) coro_first = coro->next;
		1303
		1304	return 1;
828	}	1305	}
829		1306
830	static int	1307	static int
831	coro_state_clear (pTHX_ SV sv, MAGIC mg)	1308	coro_state_free (pTHX_ SV sv, MAGIC mg)
832	{	1309	{
833	struct coro coro = (struct coro )mg->mg_ptr;	1310	struct coro coro = (struct coro )mg->mg_ptr;
834	mg->mg_ptr = 0;	1311	mg->mg_ptr = 0;
835		1312
		1313	coro->hv = 0;
		1314
		1315	if (--coro->refcnt < 0)
		1316	{
836	coro_state_destroy (coro);	1317	coro_state_destroy (aTHX_ coro);
		1318	Safefree (coro);
		1319	}
837		1320
838	return 0;	1321	return 0;
839	}	1322	}
840		1323
841	static int	1324	static int
…		…
848	return 0;	1331	return 0;
849	}	1332	}
850		1333
851	static MGVTBL coro_state_vtbl = {	1334	static MGVTBL coro_state_vtbl = {
852	0, 0, 0, 0,	1335	0, 0, 0, 0,
853	coro_state_clear,	1336	coro_state_free,
854	0,	1337	0,
855	#ifdef MGf_DUP	1338	#ifdef MGf_DUP
856	coro_state_dup,	1339	coro_state_dup,
857	#else	1340	#else
858	# define MGf_DUP 0	1341	# define MGf_DUP 0
859	#endif	1342	#endif
860	};	1343	};
861		1344
862	static struct coro *
863	SvSTATE (SV *coro)
864	{
865	HV *stash;
866	MAGIC *mg;
867
868	if (SvROK (coro))
869	coro = SvRV (coro);
870
871	stash = SvSTASH (coro);
872	if (stash != coro_stash && stash != coro_state_stash)
873	{
874	/* very slow, but rare, check */
875	if (!sv_derived_from (sv_2mortal (newRV_inc (coro)), "Coro::State"))
876	croak ("Coro::State object required");
877	}
878
879	mg = SvMAGIC (coro);
880	assert (mg->mg_type == PERL_MAGIC_ext);
881	return (struct coro *)mg->mg_ptr;
882	}
883
884	static void	1345	static void
885	prepare_transfer (struct transfer_args ta, SV prev_sv, SV *next_sv)	1346	prepare_transfer (pTHX_ struct transfer_args ta, SV prev_sv, SV *next_sv)
886	{	1347	{
887	ta->prev = SvSTATE (prev_sv);	1348	ta->prev = SvSTATE (prev_sv);
888	ta->next = SvSTATE (next_sv);	1349	ta->next = SvSTATE (next_sv);
		1350	TRANSFER_CHECK (*ta);
889	}	1351	}
890		1352
891	static void	1353	static void
892	api_transfer (SV prev_sv, SV next_sv)	1354	api_transfer (SV prev_sv, SV next_sv)
893	{	1355	{
		1356	dTHX;
894	struct transfer_args ta;	1357	struct transfer_args ta;
895		1358
896	prepare_transfer (&ta, prev_sv, next_sv);	1359	prepare_transfer (aTHX_ &ta, prev_sv, next_sv);
897	TRANSFER (ta);	1360	TRANSFER (ta, 1);
898	}
899
900	static int
901	api_save (SV *coro_sv, int new_save)
902	{
903	struct coro *coro = SvSTATE (coro_sv);
904	int old_save = coro->save;
905
906	if (new_save >= 0)
907	coro->save = new_save;
908
909	return old_save;
910	}	1361	}
911		1362
912	/ Coro ******************************************************************/	1363	/ Coro ******************************************************************/
913		1364
914	#define PRIO_MAX 3
915	#define PRIO_HIGH 1
916	#define PRIO_NORMAL 0
917	#define PRIO_LOW -1
918	#define PRIO_IDLE -3
919	#define PRIO_MIN -4
920
921	/* for Coro.pm */
922	static SV *coro_current;
923	static AV *coro_ready [PRIO_MAX-PRIO_MIN+1];
924	static int coro_nready;
925
926	static void	1365	static void
927	coro_enq (SV *coro_sv)	1366	coro_enq (pTHX_ SV *coro_sv)
928	{	1367	{
929	av_push (coro_ready [SvSTATE (coro_sv)->prio - PRIO_MIN], coro_sv);	1368	av_push (coro_ready [SvSTATE (coro_sv)->prio - PRIO_MIN], coro_sv);
930	coro_nready++;
931	}	1369	}
932		1370
933	static SV *	1371	static SV *
934	coro_deq (int min_prio)	1372	coro_deq (pTHX)
935	{	1373	{
936	int prio = PRIO_MAX - PRIO_MIN;	1374	int prio;
937		1375
938	min_prio -= PRIO_MIN;
939	if (min_prio < 0)
940	min_prio = 0;
941
942	for (prio = PRIO_MAX - PRIO_MIN + 1; --prio >= min_prio; )	1376	for (prio = PRIO_MAX - PRIO_MIN + 1; --prio >= 0; )
943	if (AvFILLp (coro_ready [prio]) >= 0)	1377	if (AvFILLp (coro_ready [prio]) >= 0)
944	{
945	coro_nready--;
946	return av_shift (coro_ready [prio]);	1378	return av_shift (coro_ready [prio]);
947	}
948		1379
949	return 0;	1380	return 0;
950	}	1381	}
951		1382
952	static int	1383	static int
953	api_ready (SV *coro_sv)	1384	api_ready (SV *coro_sv)
954	{	1385	{
		1386	dTHX;
955	struct coro *coro;	1387	struct coro *coro;
		1388	SV *sv_hook;
		1389	void (*xs_hook)(void);
956		1390
957	if (SvROK (coro_sv))	1391	if (SvROK (coro_sv))
958	coro_sv = SvRV (coro_sv);	1392	coro_sv = SvRV (coro_sv);
959		1393
960	coro = SvSTATE (coro_sv);	1394	coro = SvSTATE (coro_sv);
…		…
963	return 0;	1397	return 0;
964		1398
965	coro->flags \|= CF_READY;	1399	coro->flags \|= CF_READY;
966		1400
967	LOCK;	1401	LOCK;
		1402
		1403	sv_hook = coro_nready ? 0 : coro_readyhook;
		1404	xs_hook = coro_nready ? 0 : coroapi.readyhook;
		1405
968	coro_enq (SvREFCNT_inc (coro_sv));	1406	coro_enq (aTHX_ SvREFCNT_inc (coro_sv));
		1407	++coro_nready;
		1408
969	UNLOCK;	1409	UNLOCK;
		1410
		1411	if (sv_hook)
		1412	{
		1413	dSP;
		1414
		1415	ENTER;
		1416	SAVETMPS;
		1417
		1418	PUSHMARK (SP);
		1419	PUTBACK;
		1420	call_sv (sv_hook, G_DISCARD);
		1421	SPAGAIN;
		1422
		1423	FREETMPS;
		1424	LEAVE;
		1425	}
		1426
		1427	if (xs_hook)
		1428	xs_hook ();
970		1429
971	return 1;	1430	return 1;
972	}	1431	}
973		1432
974	static int	1433	static int
975	api_is_ready (SV *coro_sv)	1434	api_is_ready (SV *coro_sv)
976	{	1435	{
		1436	dTHX;
977	return !!(SvSTATE (coro_sv)->flags & CF_READY);	1437	return !!(SvSTATE (coro_sv)->flags & CF_READY);
978	}	1438	}
979		1439
980	static void	1440	static void
981	prepare_schedule (struct transfer_args *ta)	1441	prepare_schedule (pTHX_ struct transfer_args *ta)
982	{	1442	{
983	SV prev, next;	1443	SV prev_sv, next_sv;
984		1444
985	for (;;)	1445	for (;;)
986	{	1446	{
987	LOCK;	1447	LOCK;
988	next = coro_deq (PRIO_MIN);	1448	next_sv = coro_deq (aTHX);
		1449
		1450	/* nothing to schedule: call the idle handler */
		1451	if (expect_false (!next_sv))
		1452	{
		1453	dSP;
		1454	UNLOCK;
		1455
		1456	ENTER;
		1457	SAVETMPS;
		1458
		1459	PUSHMARK (SP);
		1460	PUTBACK;
		1461	call_sv (get_sv ("Coro::idle", FALSE), G_DISCARD);
		1462	SPAGAIN;
		1463
		1464	FREETMPS;
		1465	LEAVE;
		1466	continue;
		1467	}
		1468
		1469	ta->next = SvSTATE (next_sv);
		1470
		1471	/* cannot transfer to destroyed coros, skip and look for next */
		1472	if (expect_false (ta->next->flags & CF_DESTROYED))
		1473	{
		1474	UNLOCK;
		1475	SvREFCNT_dec (next_sv);
		1476	/* coro_nready is already taken care of by destroy */
		1477	continue;
		1478	}
		1479
		1480	--coro_nready;
989	UNLOCK;	1481	UNLOCK;
990
991	if (next)
992	break;	1482	break;
993
994	{
995	dSP;
996
997	ENTER;
998	SAVETMPS;
999
1000	PUSHMARK (SP);
1001	PUTBACK;
1002	call_sv (get_sv ("Coro::idle", FALSE), G_DISCARD);
1003
1004	FREETMPS;
1005	LEAVE;
1006	}	1483	}
1007	}
1008
1009	prev = SvRV (coro_current);
1010	SvRV_set (coro_current, next);
1011		1484
1012	/* free this only after the transfer */	1485	/* free this only after the transfer */
1013	LOCK;	1486	prev_sv = SvRV (coro_current);
1014	free_coro_mortal ();
1015	UNLOCK;
1016	coro_mortal = prev;
1017
1018	assert (!SvROK(prev));//D
1019	assert (!SvROK(next));//D
1020
1021	ta->prev = SvSTATE (prev);	1487	ta->prev = SvSTATE (prev_sv);
1022	ta->next = SvSTATE (next);	1488	TRANSFER_CHECK (*ta);
1023
1024	assert (ta->next->flags & CF_READY);	1489	assert (ta->next->flags & CF_READY);
1025	ta->next->flags &= ~CF_READY;	1490	ta->next->flags &= ~CF_READY;
		1491	SvRV_set (coro_current, next_sv);
		1492
		1493	LOCK;
		1494	free_coro_mortal (aTHX);
		1495	coro_mortal = prev_sv;
		1496	UNLOCK;
1026	}	1497	}
1027		1498
1028	static void	1499	static void
1029	prepare_cede (struct transfer_args *ta)	1500	prepare_cede (pTHX_ struct transfer_args *ta)
1030	{	1501	{
1031	api_ready (coro_current);	1502	api_ready (coro_current);
1032	prepare_schedule (ta);	1503	prepare_schedule (aTHX_ ta);
1033	}	1504	}
1034		1505
1035	static int	1506	static int
1036	prepare_cede_notself (struct transfer_args *ta)	1507	prepare_cede_notself (pTHX_ struct transfer_args *ta)
1037	{	1508	{
1038	if (coro_nready)	1509	if (coro_nready)
1039	{	1510	{
1040	SV *prev = SvRV (coro_current);	1511	SV *prev = SvRV (coro_current);
1041	prepare_schedule (ta);	1512	prepare_schedule (aTHX_ ta);
1042	api_ready (prev);	1513	api_ready (prev);
1043	return 1;	1514	return 1;
1044	}	1515	}
1045	else	1516	else
1046	return 0;	1517	return 0;
1047	}	1518	}
1048		1519
1049	static void	1520	static void
1050	api_schedule (void)	1521	api_schedule (void)
1051	{	1522	{
		1523	dTHX;
1052	struct transfer_args ta;	1524	struct transfer_args ta;
1053		1525
1054	prepare_schedule (&ta);	1526	prepare_schedule (aTHX_ &ta);
1055	TRANSFER (ta);	1527	TRANSFER (ta, 1);
1056	}	1528	}
1057		1529
1058	static int	1530	static int
1059	api_cede (void)	1531	api_cede (void)
1060	{	1532	{
		1533	dTHX;
1061	struct transfer_args ta;	1534	struct transfer_args ta;
1062		1535
1063	prepare_cede (&ta);	1536	prepare_cede (aTHX_ &ta);
1064		1537
1065	if (ta.prev != ta.next)	1538	if (expect_true (ta.prev != ta.next))
1066	{	1539	{
1067	TRANSFER (ta);	1540	TRANSFER (ta, 1);
1068	return 1;	1541	return 1;
1069	}	1542	}
1070	else	1543	else
1071	return 0;	1544	return 0;
1072	}	1545	}
1073		1546
1074	static int	1547	static int
1075	api_cede_notself (void)	1548	api_cede_notself (void)
1076	{	1549	{
		1550	dTHX;
1077	struct transfer_args ta;	1551	struct transfer_args ta;
1078		1552
1079	if (prepare_cede_notself (&ta))	1553	if (prepare_cede_notself (aTHX_ &ta))
1080	{	1554	{
1081	TRANSFER (ta);	1555	TRANSFER (ta, 1);
1082	return 1;	1556	return 1;
1083	}	1557	}
1084	else	1558	else
1085	return 0;	1559	return 0;
1086	}	1560	}
1087		1561
		1562	static void
		1563	api_trace (SV *coro_sv, int flags)
		1564	{
		1565	dTHX;
		1566	struct coro *coro = SvSTATE (coro_sv);
		1567
		1568	if (flags & CC_TRACE)
		1569	{
		1570	if (!coro->cctx)
		1571	coro->cctx = cctx_new ();
		1572	else if (!(coro->cctx->flags & CC_TRACE))
		1573	croak ("cannot enable tracing on coroutine with custom stack");
		1574
		1575	coro->cctx->flags \|= CC_NOREUSE \| (flags & (CC_TRACE \| CC_TRACE_ALL));
		1576	}
		1577	else if (coro->cctx && coro->cctx->flags & CC_TRACE)
		1578	{
		1579	coro->cctx->flags &= ~(CC_TRACE \| CC_TRACE_ALL);
		1580
		1581	if (coro->flags & CF_RUNNING)
		1582	PL_runops = RUNOPS_DEFAULT;
		1583	else
		1584	coro->slot->runops = RUNOPS_DEFAULT;
		1585	}
		1586	}
		1587
1088	MODULE = Coro::State PACKAGE = Coro::State	1588	MODULE = Coro::State PACKAGE = Coro::State PREFIX = api_
1089		1589
1090	PROTOTYPES: DISABLE	1590	PROTOTYPES: DISABLE
1091		1591
1092	BOOT:	1592	BOOT:
1093	{	1593	{
1094	#ifdef USE_ITHREADS	1594	#ifdef USE_ITHREADS
1095	MUTEX_INIT (&coro_mutex);	1595	MUTEX_INIT (&coro_mutex);
1096	#endif	1596	#endif
1097	BOOT_PAGESIZE;	1597	BOOT_PAGESIZE;
1098		1598
		1599	irsgv = gv_fetchpv ("/" , GV_ADD\|GV_NOTQUAL, SVt_PV);
		1600	stdoutgv = gv_fetchpv ("STDOUT", GV_ADD\|GV_NOTQUAL, SVt_PVIO);
		1601
		1602	orig_sigelem_get = PL_vtbl_sigelem.svt_get;
		1603	PL_vtbl_sigelem.svt_get = coro_sigelem_get;
		1604	orig_sigelem_set = PL_vtbl_sigelem.svt_set;
		1605	PL_vtbl_sigelem.svt_set = coro_sigelem_set;
		1606
		1607	hv_sig = coro_get_hv (aTHX_ "SIG", TRUE);
		1608	rv_diehook = newRV_inc ((SV *)gv_fetchpv ("Coro::State::diehook" , 0, SVt_PVCV));
		1609	rv_warnhook = newRV_inc ((SV *)gv_fetchpv ("Coro::State::warnhook", 0, SVt_PVCV));
		1610
1099	coro_state_stash = gv_stashpv ("Coro::State", TRUE);	1611	coro_state_stash = gv_stashpv ("Coro::State", TRUE);
1100		1612
		1613	newCONSTSUB (coro_state_stash, "CC_TRACE" , newSViv (CC_TRACE));
		1614	newCONSTSUB (coro_state_stash, "CC_TRACE_SUB" , newSViv (CC_TRACE_SUB));
1101	newCONSTSUB (coro_state_stash, "SAVE_DEFAV", newSViv (CORO_SAVE_DEFAV));	1615	newCONSTSUB (coro_state_stash, "CC_TRACE_LINE", newSViv (CC_TRACE_LINE));
1102	newCONSTSUB (coro_state_stash, "SAVE_DEFSV", newSViv (CORO_SAVE_DEFSV));
1103	newCONSTSUB (coro_state_stash, "SAVE_ERRSV", newSViv (CORO_SAVE_ERRSV));
1104	newCONSTSUB (coro_state_stash, "SAVE_IRSSV", newSViv (CORO_SAVE_IRSSV));
1105	newCONSTSUB (coro_state_stash, "SAVE_ALL", newSViv (CORO_SAVE_ALL));	1616	newCONSTSUB (coro_state_stash, "CC_TRACE_ALL" , newSViv (CC_TRACE_ALL));
1106		1617
1107	main_mainstack = PL_mainstack;	1618	main_mainstack = PL_mainstack;
		1619	main_top_env = PL_top_env;
1108		1620
		1621	while (main_top_env->je_prev)
		1622	main_top_env = main_top_env->je_prev;
		1623
1109	coroapi.ver = CORO_API_VERSION;	1624	coroapi.ver = CORO_API_VERSION;
		1625	coroapi.rev = CORO_API_REVISION;
1110	coroapi.transfer = api_transfer;	1626	coroapi.transfer = api_transfer;
1111		1627
1112	assert (("PRIO_NORMAL must be 0", !PRIO_NORMAL));	1628	assert (("PRIO_NORMAL must be 0", !PRIO_NORMAL));
1113	}	1629	}
1114		1630
1115	SV *	1631	SV *
1116	new (char *klass, ...)	1632	new (char *klass, ...)
1117	CODE:	1633	CODE:
1118	{	1634	{
1119	struct coro *coro;	1635	struct coro *coro;
		1636	MAGIC *mg;
1120	HV *hv;	1637	HV *hv;
1121	int i;	1638	int i;
1122		1639
1123	Newz (0, coro, 1, struct coro);	1640	Newz (0, coro, 1, struct coro);
1124	coro->args = newAV ();	1641	coro->args = newAV ();
1125	coro->save = CORO_SAVE_ALL;
1126	coro->flags = CF_NEW;	1642	coro->flags = CF_NEW;
1127		1643
		1644	if (coro_first) coro_first->prev = coro;
		1645	coro->next = coro_first;
		1646	coro_first = coro;
		1647
1128	hv = newHV ();	1648	coro->hv = hv = newHV ();
1129	sv_magicext ((SV )hv, 0, PERL_MAGIC_ext, &coro_state_vtbl, (char )coro, 0)->mg_flags \|= MGf_DUP;	1649	mg = sv_magicext ((SV )hv, 0, CORO_MAGIC_type_state, &coro_state_vtbl, (char )coro, 0);
		1650	mg->mg_flags \|= MGf_DUP;
1130	RETVAL = sv_bless (newRV_noinc ((SV *)hv), gv_stashpv (klass, 1));	1651	RETVAL = sv_bless (newRV_noinc ((SV *)hv), gv_stashpv (klass, 1));
1131		1652
		1653	av_extend (coro->args, items - 1);
1132	for (i = 1; i < items; i++)	1654	for (i = 1; i < items; i++)
1133	av_push (coro->args, newSVsv (ST (i)));	1655	av_push (coro->args, newSVsv (ST (i)));
1134	}	1656	}
1135	OUTPUT:	1657	OUTPUT:
1136	RETVAL	1658	RETVAL
1137		1659
1138	int	1660	# these not obviously related functions are all rolled into the same xs
1139	save (SV *coro, int new_save = -1)	1661	# function to increase chances that they all will call transfer with the same
1140	CODE:	1662	# stack offset
1141	RETVAL = api_save (coro, new_save);
1142	OUTPUT:
1143	RETVAL
1144
1145	void	1663	void
1146	_set_stacklevel (...)	1664	_set_stacklevel (...)
1147	ALIAS:	1665	ALIAS:
1148	Coro::State::transfer = 1	1666	Coro::State::transfer = 1
1149	Coro::schedule = 2	1667	Coro::schedule = 2
…		…
1151	Coro::cede_notself = 4	1669	Coro::cede_notself = 4
1152	CODE:	1670	CODE:
1153	{	1671	{
1154	struct transfer_args ta;	1672	struct transfer_args ta;
1155		1673
		1674	PUTBACK;
1156	switch (ix)	1675	switch (ix)
1157	{	1676	{
1158	case 0:	1677	case 0:
1159	ta.prev = (struct coro )INT2PTR (coro_cctx , SvIV (ST (0)));	1678	ta.prev = (struct coro )INT2PTR (coro_cctx , SvIV (ST (0)));
1160	ta.next = 0;	1679	ta.next = 0;
…		…
1162		1681
1163	case 1:	1682	case 1:
1164	if (items != 2)	1683	if (items != 2)
1165	croak ("Coro::State::transfer (prev,next) expects two arguments, not %d", items);	1684	croak ("Coro::State::transfer (prev,next) expects two arguments, not %d", items);
1166		1685
1167	prepare_transfer (&ta, ST (0), ST (1));	1686	prepare_transfer (aTHX_ &ta, ST (0), ST (1));
1168	break;	1687	break;
1169		1688
1170	case 2:	1689	case 2:
1171	prepare_schedule (&ta);	1690	prepare_schedule (aTHX_ &ta);
1172	break;	1691	break;
1173		1692
1174	case 3:	1693	case 3:
1175	prepare_cede (&ta);	1694	prepare_cede (aTHX_ &ta);
1176	break;	1695	break;
1177		1696
1178	case 4:	1697	case 4:
1179	if (!prepare_cede_notself (&ta))	1698	if (!prepare_cede_notself (aTHX_ &ta))
1180	XSRETURN_EMPTY;	1699	XSRETURN_EMPTY;
1181		1700
1182	break;	1701	break;
1183	}	1702	}
		1703	SPAGAIN;
1184		1704
1185	BARRIER;	1705	BARRIER;
		1706	PUTBACK;
1186	TRANSFER (ta);	1707	TRANSFER (ta, 0);
		1708	SPAGAIN; /* might be the sp of a different coroutine now */
		1709	/* be extra careful not to ever do anything after TRANSFER */
1187	}	1710	}
		1711
		1712	bool
		1713	_destroy (SV *coro_sv)
		1714	CODE:
		1715	RETVAL = coro_state_destroy (aTHX_ SvSTATE (coro_sv));
		1716	OUTPUT:
		1717	RETVAL
1188		1718
1189	void	1719	void
1190	_clone_state_from (SV dst, SV src)
1191	CODE:
1192	{
1193	struct coro *coro_src = SvSTATE (src);
1194
1195	sv_unmagic (SvRV (dst), PERL_MAGIC_ext);
1196
1197	++coro_src->refcnt;
1198	sv_magicext (SvRV (dst), 0, PERL_MAGIC_ext, &coro_state_vtbl, (char *)coro_src, 0)->mg_flags \|= MGf_DUP;
1199	}
1200
1201	void
1202	_exit (code)	1720	_exit (int code)
1203	int code
1204	PROTOTYPE: $	1721	PROTOTYPE: $
1205	CODE:	1722	CODE:
1206	_exit (code);	1723	_exit (code);
		1724
		1725	int
		1726	cctx_stacksize (int new_stacksize = 0)
		1727	CODE:
		1728	RETVAL = coro_stacksize;
		1729	if (new_stacksize)
		1730	coro_stacksize = new_stacksize;
		1731	OUTPUT:
		1732	RETVAL
1207		1733
1208	int	1734	int
1209	cctx_count ()	1735	cctx_count ()
1210	CODE:	1736	CODE:
1211	RETVAL = cctx_count;	1737	RETVAL = cctx_count;
…		…
1217	CODE:	1743	CODE:
1218	RETVAL = cctx_idle;	1744	RETVAL = cctx_idle;
1219	OUTPUT:	1745	OUTPUT:
1220	RETVAL	1746	RETVAL
1221		1747
		1748	void
		1749	list ()
		1750	PPCODE:
		1751	{
		1752	struct coro *coro;
		1753	for (coro = coro_first; coro; coro = coro->next)
		1754	if (coro->hv)
		1755	XPUSHs (sv_2mortal (newRV_inc ((SV *)coro->hv)));
		1756	}
		1757
		1758	void
		1759	call (Coro::State coro, SV *coderef)
		1760	ALIAS:
		1761	eval = 1
		1762	CODE:
		1763	{
		1764	if (coro->mainstack)
		1765	{
		1766	struct coro temp;
		1767
		1768	if (!(coro->flags & CF_RUNNING))
		1769	{
		1770	PUTBACK;
		1771	save_perl (aTHX_ &temp);
		1772	load_perl (aTHX_ coro);
		1773	}
		1774
		1775	{
		1776	dSP;
		1777	ENTER;
		1778	SAVETMPS;
		1779	PUTBACK;
		1780	PUSHSTACK;
		1781	PUSHMARK (SP);
		1782
		1783	if (ix)
		1784	eval_sv (coderef, 0);
		1785	else
		1786	call_sv (coderef, G_KEEPERR \| G_EVAL \| G_VOID \| G_DISCARD);
		1787
		1788	POPSTACK;
		1789	SPAGAIN;
		1790	FREETMPS;
		1791	LEAVE;
		1792	PUTBACK;
		1793	}
		1794
		1795	if (!(coro->flags & CF_RUNNING))
		1796	{
		1797	save_perl (aTHX_ coro);
		1798	load_perl (aTHX_ &temp);
		1799	SPAGAIN;
		1800	}
		1801	}
		1802	}
		1803
		1804	SV *
		1805	is_ready (Coro::State coro)
		1806	PROTOTYPE: $
		1807	ALIAS:
		1808	is_ready = CF_READY
		1809	is_running = CF_RUNNING
		1810	is_new = CF_NEW
		1811	is_destroyed = CF_DESTROYED
		1812	CODE:
		1813	RETVAL = boolSV (coro->flags & ix);
		1814	OUTPUT:
		1815	RETVAL
		1816
		1817	void
		1818	api_trace (SV *coro, int flags = CC_TRACE \| CC_TRACE_SUB)
		1819
		1820	SV *
		1821	has_cctx (Coro::State coro)
		1822	PROTOTYPE: $
		1823	CODE:
		1824	RETVAL = boolSV (!!coro->cctx);
		1825	OUTPUT:
		1826	RETVAL
		1827
		1828	int
		1829	is_traced (Coro::State coro)
		1830	PROTOTYPE: $
		1831	CODE:
		1832	RETVAL = (coro->cctx ? coro->cctx->flags : 0) & CC_TRACE_ALL;
		1833	OUTPUT:
		1834	RETVAL
		1835
		1836	IV
		1837	rss (Coro::State coro)
		1838	PROTOTYPE: $
		1839	ALIAS:
		1840	usecount = 1
		1841	CODE:
		1842	switch (ix)
		1843	{
		1844	case 0: RETVAL = coro_rss (aTHX_ coro); break;
		1845	case 1: RETVAL = coro->usecount; break;
		1846	}
		1847	OUTPUT:
		1848	RETVAL
		1849
		1850	void
		1851	force_cctx ()
		1852	CODE:
		1853	struct coro *coro = SvSTATE (coro_current);
		1854	coro->cctx->idle_sp = 0;
		1855
1222	MODULE = Coro::State PACKAGE = Coro	1856	MODULE = Coro::State PACKAGE = Coro
1223		1857
1224	BOOT:	1858	BOOT:
1225	{	1859	{
1226	int i;	1860	int i;
1227		1861
		1862	av_async_pool = coro_get_av (aTHX_ "Coro::async_pool", TRUE);
		1863	sv_pool_rss = coro_get_sv (aTHX_ "Coro::POOL_RSS" , TRUE);
		1864	sv_pool_size = coro_get_sv (aTHX_ "Coro::POOL_SIZE" , TRUE);
		1865
		1866	coro_current = coro_get_sv (aTHX_ "Coro::current", FALSE);
		1867	SvREADONLY_on (coro_current);
		1868
1228	coro_stash = gv_stashpv ("Coro", TRUE);	1869	coro_stash = gv_stashpv ("Coro", TRUE);
1229		1870
1230	newCONSTSUB (coro_stash, "PRIO_MAX", newSViv (PRIO_MAX));	1871	newCONSTSUB (coro_stash, "PRIO_MAX", newSViv (PRIO_MAX));
1231	newCONSTSUB (coro_stash, "PRIO_HIGH", newSViv (PRIO_HIGH));	1872	newCONSTSUB (coro_stash, "PRIO_HIGH", newSViv (PRIO_HIGH));
1232	newCONSTSUB (coro_stash, "PRIO_NORMAL", newSViv (PRIO_NORMAL));	1873	newCONSTSUB (coro_stash, "PRIO_NORMAL", newSViv (PRIO_NORMAL));
1233	newCONSTSUB (coro_stash, "PRIO_LOW", newSViv (PRIO_LOW));	1874	newCONSTSUB (coro_stash, "PRIO_LOW", newSViv (PRIO_LOW));
1234	newCONSTSUB (coro_stash, "PRIO_IDLE", newSViv (PRIO_IDLE));	1875	newCONSTSUB (coro_stash, "PRIO_IDLE", newSViv (PRIO_IDLE));
1235	newCONSTSUB (coro_stash, "PRIO_MIN", newSViv (PRIO_MIN));	1876	newCONSTSUB (coro_stash, "PRIO_MIN", newSViv (PRIO_MIN));
1236		1877
1237	coro_current = get_sv ("Coro::current", FALSE);
1238	SvREADONLY_on (coro_current);
1239
1240	for (i = PRIO_MAX - PRIO_MIN + 1; i--; )	1878	for (i = PRIO_MAX - PRIO_MIN + 1; i--; )
1241	coro_ready[i] = newAV ();	1879	coro_ready[i] = newAV ();
1242		1880
1243	{	1881	{
1244	SV *sv = perl_get_sv("Coro::API", 1);	1882	SV *sv = perl_get_sv ("Coro::API", TRUE);
		1883	perl_get_sv ("Coro::API", TRUE); /* silence 5.10 warning */
1245		1884
1246	coroapi.schedule = api_schedule;	1885	coroapi.schedule = api_schedule;
1247	coroapi.save = api_save;
1248	coroapi.cede = api_cede;	1886	coroapi.cede = api_cede;
1249	coroapi.cede_notself = api_cede_notself;	1887	coroapi.cede_notself = api_cede_notself;
1250	coroapi.ready = api_ready;	1888	coroapi.ready = api_ready;
1251	coroapi.is_ready = api_is_ready;	1889	coroapi.is_ready = api_is_ready;
1252	coroapi.nready = &coro_nready;	1890	coroapi.nready = &coro_nready;
…		…
1262	_set_current (SV *current)	1900	_set_current (SV *current)
1263	PROTOTYPE: $	1901	PROTOTYPE: $
1264	CODE:	1902	CODE:
1265	SvREFCNT_dec (SvRV (coro_current));	1903	SvREFCNT_dec (SvRV (coro_current));
1266	SvRV_set (coro_current, SvREFCNT_inc (SvRV (current)));	1904	SvRV_set (coro_current, SvREFCNT_inc (SvRV (current)));
		1905
		1906	void
		1907	_set_readyhook (SV *hook)
		1908	PROTOTYPE: $
		1909	CODE:
		1910	LOCK;
		1911	SvREFCNT_dec (coro_readyhook);
		1912	coro_readyhook = SvOK (hook) ? newSVsv (hook) : 0;
		1913	UNLOCK;
1267		1914
1268	int	1915	int
1269	prio (Coro::State coro, int newprio = 0)	1916	prio (Coro::State coro, int newprio = 0)
1270	ALIAS:	1917	ALIAS:
1271	nice = 1	1918	nice = 1
…		…
1293	CODE:	1940	CODE:
1294	RETVAL = boolSV (api_ready (self));	1941	RETVAL = boolSV (api_ready (self));
1295	OUTPUT:	1942	OUTPUT:
1296	RETVAL	1943	RETVAL
1297		1944
1298	SV *
1299	is_ready (SV *self)
1300	PROTOTYPE: $
1301	CODE:
1302	RETVAL = boolSV (api_is_ready (self));
1303	OUTPUT:
1304	RETVAL
1305
1306	int	1945	int
1307	nready (...)	1946	nready (...)
1308	PROTOTYPE:	1947	PROTOTYPE:
1309	CODE:	1948	CODE:
1310	RETVAL = coro_nready;	1949	RETVAL = coro_nready;
1311	OUTPUT:	1950	OUTPUT:
1312	RETVAL	1951	RETVAL
1313		1952
		1953	void
		1954	throw (Coro::State self, SV *throw = &PL_sv_undef)
		1955	PROTOTYPE: $;$
		1956	CODE:
		1957	SvREFCNT_dec (self->throw);
		1958	self->throw = SvOK (throw) ? newSVsv (throw) : 0;
		1959
		1960	void
		1961	swap_defsv (Coro::State self)
		1962	PROTOTYPE: $
		1963	ALIAS:
		1964	swap_defav = 1
		1965	CODE:
		1966	if (!self->slot)
		1967	croak ("cannot swap state with coroutine that has no saved state");
		1968	else
		1969	{
		1970	SV src = ix ? (SV )&GvAV (PL_defgv) : &GvSV (PL_defgv);
		1971	SV dst = ix ? (SV )&self->slot->defav : (SV **)&self->slot->defsv;
		1972
		1973	SV tmp = src; src = dst; *dst = tmp;
		1974	}
		1975
		1976	# for async_pool speedup
		1977	void
		1978	_pool_1 (SV *cb)
		1979	CODE:
		1980	{
		1981	struct coro *coro = SvSTATE (coro_current);
		1982	HV hv = (HV )SvRV (coro_current);
		1983	AV *defav = GvAV (PL_defgv);
		1984	SV *invoke = hv_delete (hv, "_invoke", sizeof ("_invoke") - 1, 0);
		1985	AV *invoke_av;
		1986	int i, len;
		1987
		1988	if (!invoke)
		1989	{
		1990	SvREFCNT_dec (PL_diehook); PL_diehook = 0;
		1991	croak ("\3async_pool terminate\2\n");
		1992	}
		1993
		1994	SvREFCNT_dec (coro->saved_deffh);
		1995	coro->saved_deffh = SvREFCNT_inc ((SV *)PL_defoutgv);
		1996
		1997	hv_store (hv, "desc", sizeof ("desc") - 1,
		1998	newSVpvn ("[async_pool]", sizeof ("[async_pool]") - 1), 0);
		1999
		2000	invoke_av = (AV *)SvRV (invoke);
		2001	len = av_len (invoke_av);
		2002
		2003	sv_setsv (cb, AvARRAY (invoke_av)[0]);
		2004
		2005	if (len > 0)
		2006	{
		2007	av_fill (defav, len - 1);
		2008	for (i = 0; i < len; ++i)
		2009	av_store (defav, i, SvREFCNT_inc (AvARRAY (invoke_av)[i + 1]));
		2010	}
		2011
		2012	SvREFCNT_dec (invoke);
		2013	}
		2014
		2015	void
		2016	_pool_2 (SV *cb)
		2017	CODE:
		2018	{
		2019	struct coro *coro = SvSTATE (coro_current);
		2020
		2021	sv_setsv (cb, &PL_sv_undef);
		2022
		2023	SvREFCNT_dec ((SV )PL_defoutgv); PL_defoutgv = (GV )coro->saved_deffh;
		2024	coro->saved_deffh = 0;
		2025
		2026	if (coro_rss (aTHX_ coro) > SvIV (sv_pool_rss)
		2027	\|\| av_len (av_async_pool) + 1 >= SvIV (sv_pool_size))
		2028	{
		2029	SvREFCNT_dec (PL_diehook); PL_diehook = 0;
		2030	croak ("\3async_pool terminate\2\n");
		2031	}
		2032
		2033	av_clear (GvAV (PL_defgv));
		2034	hv_store ((HV *)SvRV (coro_current), "desc", sizeof ("desc") - 1,
		2035	newSVpvn ("[async_pool idle]", sizeof ("[async_pool idle]") - 1), 0);
		2036
		2037	coro->prio = 0;
		2038
		2039	if (coro->cctx && (coro->cctx->flags & CC_TRACE))
		2040	api_trace (coro_current, 0);
		2041
		2042	av_push (av_async_pool, newSVsv (coro_current));
		2043	}
		2044
		2045
1314	MODULE = Coro::State PACKAGE = Coro::AIO	2046	MODULE = Coro::State PACKAGE = Coro::AIO
1315		2047
1316	SV *	2048	SV *
1317	_get_state ()	2049	_get_state ()
1318	CODE:	2050	CODE:
…		…
1343	PL_laststype = data->laststype;	2075	PL_laststype = data->laststype;
1344	PL_laststatval = data->laststatval;	2076	PL_laststatval = data->laststatval;
1345	PL_statcache = data->statcache;	2077	PL_statcache = data->statcache;
1346	}	2078	}
1347		2079
		2080
		2081	MODULE = Coro::State PACKAGE = Coro::AnyEvent
		2082
		2083	BOOT:
		2084	sv_activity = coro_get_sv (aTHX_ "Coro::AnyEvent::ACTIVITY", TRUE);
		2085
		2086	SV *
		2087	_schedule (...)
		2088	PROTOTYPE: @
		2089	CODE:
		2090	{
		2091	static int incede;
		2092
		2093	api_cede_notself ();
		2094
		2095	++incede;
		2096	while (coro_nready >= incede && api_cede ())
		2097	;
		2098
		2099	sv_setsv (sv_activity, &PL_sv_undef);
		2100	if (coro_nready >= incede)
		2101	{
		2102	PUSHMARK (SP);
		2103	PUTBACK;
		2104	call_pv ("Coro::AnyEvent::_activity", G_DISCARD \| G_EVAL);
		2105	SPAGAIN;
		2106	}
		2107
		2108	--incede;
		2109	}
		2110

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Comparing Coro/Coro/State.xs (file contents): Revision 1.132 by root, Fri Dec 29 13:03:05 2006 UTC vs. Revision 1.237 by root, Fri May 23 00:27:06 2008 UTC

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Comparing Coro/Coro/State.xs (file contents):
Revision 1.132 by root, Fri Dec 29 13:03:05 2006 UTC vs.
Revision 1.237 by root, Fri May 23 00:27:06 2008 UTC