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

Comparing Coro/Coro/State.xs (file contents):
Revision 1.61 by root, Tue Aug 10 01:56:30 2004 UTC vs.
Revision 1.89 by root, Sat Nov 25 00:40:26 2006 UTC

…		…
1	#define PERL_NO_GET_CONTEXT	1	#define PERL_NO_GET_CONTEXT
		2
		3	#include "libcoro/coro.c"
2		4
3	#include "EXTERN.h"	5	#include "EXTERN.h"
4	#include "perl.h"	6	#include "perl.h"
5	#include "XSUB.h"	7	#include "XSUB.h"
6		8
7	#include "patchlevel.h"	9	#include "patchlevel.h"
8		10
9	#if PATCHLEVEL < 6	11	#if PERL_VERSION < 6
10	# ifndef PL_ppaddr	12	# ifndef PL_ppaddr
11	# define PL_ppaddr ppaddr	13	# define PL_ppaddr ppaddr
12	# endif	14	# endif
13	# ifndef call_sv	15	# ifndef call_sv
14	# define call_sv perl_call_sv	16	# define call_sv perl_call_sv
25	# ifndef IS_PADCONST	27	# ifndef IS_PADCONST
26	# define IS_PADCONST(v) 0	28	# define IS_PADCONST(v) 0
27	# endif	29	# endif
28	#endif	30	#endif
29		31
30	#include "libcoro/coro.c"
31
32	#include <signal.h>	32	#include <errno.h>
		33
		34	#if !__i386 && !__x86_64 && !__powerpc && !__m68k && !__alpha && !__mips && !__sparc64
		35	# undef STACKGUARD
		36	#endif
		37
		38	#ifndef STACKGUARD
		39	# define STACKGUARD 0
		40	#endif
33		41
34	#ifdef HAVE_MMAP	42	#ifdef HAVE_MMAP
35	# include <unistd.h>	43	# include <unistd.h>
36	# include <sys/mman.h>	44	# include <sys/mman.h>
37	# ifndef MAP_ANONYMOUS	45	# ifndef MAP_ANONYMOUS
…		…
39	# define MAP_ANONYMOUS MAP_ANON	47	# define MAP_ANONYMOUS MAP_ANON
40	# else	48	# else
41	# undef HAVE_MMAP	49	# undef HAVE_MMAP
42	# endif	50	# endif
43	# endif	51	# endif
		52	# include <limits.h>
		53	# ifndef PAGESIZE
		54	# define PAGESIZE pagesize
		55	# define BOOT_PAGESIZE pagesize = sysconf (_SC_PAGESIZE)
		56	static long pagesize;
		57	# else
		58	# define BOOT_PAGESIZE
44	#endif	59	# endif
		60	#endif
45		61
46	#define SUB_INIT "Coro::State::initialize"	62	#define SUB_INIT "Coro::State::initialize"
47	#define UCORO_STATE "_coro_state"
48		63
49	/* The next macro should declare a variable stacklevel that contains and approximation	64	/* The next macro should declare a variable stacklevel that contains and approximation
50	* to the current C stack pointer. Its property is that it changes with each call	65	* to the current C stack pointer. Its property is that it changes with each call
51	* and should be unique. */	66	* and should be unique. */
52	#define dSTACKLEVEL void *stacklevel = &stacklevel	67	#define dSTACKLEVEL void *stacklevel = &stacklevel
…		…
57		72
58	#include "CoroAPI.h"	73	#include "CoroAPI.h"
59		74
60	#ifdef USE_ITHREADS	75	#ifdef USE_ITHREADS
61	static perl_mutex coro_mutex;	76	static perl_mutex coro_mutex;
62	# define LOCK do { MUTEX_LOCK (&coro_mutex); } while (0)	77	# define LOCK do { MUTEX_LOCK (&coro_mutex); } while (0)
63	# define UNLOCK do { MUTEX_UNLOCK (&coro_mutex); } while (0)	78	# define UNLOCK do { MUTEX_UNLOCK (&coro_mutex); } while (0)
64	#else	79	#else
65	# define LOCK 0	80	# define LOCK (void)0
66	# define UNLOCK 0	81	# define UNLOCK (void)0
67	#endif	82	#endif
68		83
69	static struct CoroAPI coroapi;	84	static struct CoroAPI coroapi;
70	static AV main_mainstack; / used to differentiate between $main and others */	85	static AV main_mainstack; / used to differentiate between $main and others */
71	static HV *coro_state_stash;	86	static HV coro_state_stash, coro_stash;
72	static SV *ucoro_state_sv;
73	static U32 ucoro_state_hash;
74	static SV coro_mortal; / will be freed after next transfer */	87	static SV coro_mortal; / will be freed after next transfer */
75		88
76	/* this is actually not only the c stack but also c registers etc... */	89	/* this is actually not just the c stack but also c registers etc... */
77	typedef struct {	90	typedef struct coro_stack {
78	int refcnt; /* pointer reference counter */	91	struct coro_stack *next;
79	int usecnt; /* shared by how many coroutines */
80	int gencnt; /* generation counter */
81		92
82	coro_context cctx;	93	void *idle_sp;
83
84	void *sptr;	94	void *sptr;
85	long ssize; /* positive == mmap, otherwise malloc */	95	long ssize; /* positive == mmap, otherwise malloc */
		96
		97	/* cpu state */
		98	coro_context cctx;
86	} coro_stack;	99	} coro_stack;
87		100
		101	static coro_stack *main_stack;
		102
88	struct coro {	103	struct coro {
89	/* the top-level JMPENV for each coroutine, needed to catch dies. */
90	JMPENV start_env;
91
92	/* the optional C context */
93	coro_stack *stack;
94	void *cursp;
95	int gencnt;
96
97	/* optionally saved, might be zero */	104	/* optionally saved, might be zero */
98	AV *defav;	105	AV *defav;
99	SV *defsv;	106	SV *defsv;
100	SV *errsv;	107	SV *errsv;
101		108
102	/* saved global state not related to stacks */	109	/* saved global state not related to stacks */
103	U8 dowarn;	110	U8 dowarn;
104	I32 in_eval;	111	I32 in_eval;
105		112
		113	/* the c stack, if any */
		114	coro_stack *stack;
		115
106	/* the stacks and related info (callchain etc..) */	116	/* the stacks and related info (callchain etc..) */
107	PERL_SI *curstackinfo;	117	PERL_SI *curstackinfo;
108	AV *curstack;	118	AV *curstack;
109	AV *mainstack;	119	AV *mainstack;
110	SV **stack_sp;	120	SV **stack_sp;
111	OP *op;	121	OP *op;
112	SV **curpad;	122	SV **curpad;
113	AV *comppad;	123	AV *comppad;
		124	CV *compcv;
114	SV **stack_base;	125	SV **stack_base;
115	SV **stack_max;	126	SV **stack_max;
116	SV **tmps_stack;	127	SV **tmps_stack;
117	I32 tmps_floor;	128	I32 tmps_floor;
118	I32 tmps_ix;	129	I32 tmps_ix;
…		…
127	I32 savestack_ix;	138	I32 savestack_ix;
128	I32 savestack_max;	139	I32 savestack_max;
129	OP **retstack;	140	OP **retstack;
130	I32 retstack_ix;	141	I32 retstack_ix;
131	I32 retstack_max;	142	I32 retstack_max;
		143	PMOP *curpm;
132	COP *curcop;	144	COP *curcop;
133	JMPENV *top_env;	145	JMPENV *top_env;
134		146
		147	/* coro process data */
		148	int prio;
		149
135	/* data associated with this coroutine (initial args) */	150	/* data associated with this coroutine (initial args) */
136	AV *args;	151	AV *args;
		152	int refcnt;
137	};	153	};
138		154
139	typedef struct coro *Coro__State;	155	typedef struct coro *Coro__State;
140	typedef struct coro *Coro__State_or_hashref;	156	typedef struct coro *Coro__State_or_hashref;
141		157
142	/* mostly copied from op.c:cv_clone2 */	158	static AV *
143	STATIC AV *	159	coro_clone_padlist (pTHX_ CV *cv)
144	clone_padlist (pTHX_ AV *protopadlist)
145	{	160	{
146	AV *av;	161	AV *padlist = CvPADLIST (cv);
147	I32 ix;
148	AV protopad_name = (AV ) * av_fetch (protopadlist, 0, FALSE);
149	AV protopad = (AV ) * av_fetch (protopadlist, 1, FALSE);
150	SV **pname = AvARRAY (protopad_name);
151	SV **ppad = AvARRAY (protopad);
152	I32 fname = AvFILLp (protopad_name);
153	I32 fpad = AvFILLp (protopad);
154	AV newpadlist, newpad_name, *newpad;	162	AV newpadlist, newpad;
155	SV **npad;
156
157	newpad_name = newAV ();
158	for (ix = fname; ix >= 0; ix--)
159	av_store (newpad_name, ix, SvREFCNT_inc (pname[ix]));
160
161	newpad = newAV ();
162	av_fill (newpad, AvFILLp (protopad));
163	npad = AvARRAY (newpad);
164		163
165	newpadlist = newAV ();	164	newpadlist = newAV ();
166	AvREAL_off (newpadlist);	165	AvREAL_off (newpadlist);
167	av_store (newpadlist, 0, (SV *) newpad_name);	166	#if PERL_VERSION < 9
		167	Perl_pad_push (aTHX_ padlist, AvFILLp (padlist) + 1, 1);
		168	#else
		169	Perl_pad_push (aTHX_ padlist, AvFILLp (padlist) + 1);
		170	#endif
		171	newpad = (AV *)AvARRAY (padlist)[AvFILLp (padlist)];
		172	--AvFILLp (padlist);
		173
		174	av_store (newpadlist, 0, SvREFCNT_inc (*av_fetch (padlist, 0, FALSE)));
168	av_store (newpadlist, 1, (SV *) newpad);	175	av_store (newpadlist, 1, (SV *)newpad);
169
170	av = newAV (); /* will be @_ */
171	av_extend (av, 0);
172	av_store (newpad, 0, (SV *) av);
173	AvFLAGS (av) = AVf_REIFY;
174
175	for (ix = fpad; ix > 0; ix--)
176	{
177	SV *namesv = (ix <= fname) ? pname[ix] : Nullsv;
178
179	if (namesv && namesv != &PL_sv_undef)
180	{
181	char name = SvPVX (namesv); / XXX */
182
183	if (SvFLAGS (namesv) & SVf_FAKE \|\| *name == '&')
184	{ /* lexical from outside? */
185	npad[ix] = SvREFCNT_inc (ppad[ix]);
186	}
187	else
188	{ /* our own lexical */
189	SV *sv;
190	if (*name == '&')
191	sv = SvREFCNT_inc (ppad[ix]);
192	else if (*name == '@')
193	sv = (SV *) newAV ();
194	else if (*name == '%')
195	sv = (SV *) newHV ();
196	else
197	sv = NEWSV (0, 0);
198
199	#ifdef SvPADBUSY
200	if (!SvPADBUSY (sv))
201	#endif
202	SvPADMY_on (sv);
203
204	npad[ix] = sv;
205	}
206	}
207	else if (IS_PADGV (ppad[ix]) \|\| IS_PADCONST (ppad[ix]))
208	{
209	npad[ix] = SvREFCNT_inc (ppad[ix]);
210	}
211	else
212	{
213	SV *sv = NEWSV (0, 0);
214	SvPADTMP_on (sv);
215	npad[ix] = sv;
216	}
217	}
218
219	#if 0 /* return -ENOTUNDERSTOOD */
220	/* Now that vars are all in place, clone nested closures. */
221
222	for (ix = fpad; ix > 0; ix--) {
223	SV* namesv = (ix <= fname) ? pname[ix] : Nullsv;
224	if (namesv
225	&& namesv != &PL_sv_undef
226	&& !(SvFLAGS(namesv) & SVf_FAKE)
227	&& *SvPVX(namesv) == '&'
228	&& CvCLONE(ppad[ix]))
229	{
230	CV kid = cv_clone((CV)ppad[ix]);
231	SvREFCNT_dec(ppad[ix]);
232	CvCLONE_on(kid);
233	SvPADMY_on(kid);
234	npad[ix] = (SV*)kid;
235	}
236	}
237	#endif
238		176
239	return newpadlist;	177	return newpadlist;
240	}	178	}
241		179
242	STATIC void	180	static void
243	free_padlist (pTHX_ AV *padlist)	181	free_padlist (pTHX_ AV *padlist)
244	{	182	{
245	/* may be during global destruction */	183	/* may be during global destruction */
246	if (SvREFCNT (padlist))	184	if (SvREFCNT (padlist))
247	{	185	{
…		…
261		199
262	SvREFCNT_dec ((SV*)padlist);	200	SvREFCNT_dec ((SV*)padlist);
263	}	201	}
264	}	202	}
265		203
266	STATIC int	204	static int
267	coro_cv_free (pTHX_ SV sv, MAGIC mg)	205	coro_cv_free (pTHX_ SV sv, MAGIC mg)
268	{	206	{
269	AV *padlist;	207	AV *padlist;
270	AV av = (AV )mg->mg_obj;	208	AV av = (AV )mg->mg_obj;
271		209
272	/* casting is fun. */	210	/* casting is fun. */
273	while (&PL_sv_undef != (SV )(padlist = (AV )av_pop (av)))	211	while (&PL_sv_undef != (SV )(padlist = (AV )av_pop (av)))
274	free_padlist (aTHX_ padlist);	212	free_padlist (aTHX_ padlist);
275		213
276	SvREFCNT_dec (av);	214	SvREFCNT_dec (av);
		215
		216	return 0;
277	}	217	}
278		218
279	#define PERL_MAGIC_coro PERL_MAGIC_ext	219	#define PERL_MAGIC_coro PERL_MAGIC_ext
280		220
281	static MGVTBL vtbl_coro = {0, 0, 0, 0, coro_cv_free};	221	static MGVTBL vtbl_coro = {0, 0, 0, 0, coro_cv_free};
282		222
283	/* the next two functions merely cache the padlists */	223	/* the next two functions merely cache the padlists */
284	STATIC void	224	static void
285	get_padlist (pTHX_ CV *cv)	225	get_padlist (pTHX_ CV *cv)
286	{	226	{
287	MAGIC mg = mg_find ((SV )cv, PERL_MAGIC_coro);	227	MAGIC mg = mg_find ((SV )cv, PERL_MAGIC_coro);
288		228
289	if (mg && AvFILLp ((AV *)mg->mg_obj) >= 0)	229	if (mg && AvFILLp ((AV *)mg->mg_obj) >= 0)
290	CvPADLIST (cv) = (AV )av_pop ((AV )mg->mg_obj);	230	CvPADLIST (cv) = (AV )av_pop ((AV )mg->mg_obj);
291	else	231	else
		232	{
		233	#if 0
		234	/* this should work - but it doesn't :( */
		235	CV *cp = Perl_cv_clone (aTHX_ cv);
		236	CvPADLIST (cv) = CvPADLIST (cp);
		237	CvPADLIST (cp) = 0;
		238	SvREFCNT_dec (cp);
		239	#else
292	CvPADLIST (cv) = clone_padlist (aTHX_ CvPADLIST (cv));	240	CvPADLIST (cv) = coro_clone_padlist (aTHX_ cv);
		241	#endif
		242	}
293	}	243	}
294		244
295	STATIC void	245	static void
296	put_padlist (pTHX_ CV *cv)	246	put_padlist (pTHX_ CV *cv)
297	{	247	{
298	MAGIC mg = mg_find ((SV )cv, PERL_MAGIC_coro);	248	MAGIC mg = mg_find ((SV )cv, PERL_MAGIC_coro);
299		249
300	if (!mg)	250	if (!mg)
…		…
327	PL_mainstack = c->mainstack;	277	PL_mainstack = c->mainstack;
328	PL_stack_sp = c->stack_sp;	278	PL_stack_sp = c->stack_sp;
329	PL_op = c->op;	279	PL_op = c->op;
330	PL_curpad = c->curpad;	280	PL_curpad = c->curpad;
331	PL_comppad = c->comppad;	281	PL_comppad = c->comppad;
		282	PL_compcv = c->compcv;
332	PL_stack_base = c->stack_base;	283	PL_stack_base = c->stack_base;
333	PL_stack_max = c->stack_max;	284	PL_stack_max = c->stack_max;
334	PL_tmps_stack = c->tmps_stack;	285	PL_tmps_stack = c->tmps_stack;
335	PL_tmps_floor = c->tmps_floor;	286	PL_tmps_floor = c->tmps_floor;
336	PL_tmps_ix = c->tmps_ix;	287	PL_tmps_ix = c->tmps_ix;
…		…
342	PL_scopestack_ix = c->scopestack_ix;	293	PL_scopestack_ix = c->scopestack_ix;
343	PL_scopestack_max = c->scopestack_max;	294	PL_scopestack_max = c->scopestack_max;
344	PL_savestack = c->savestack;	295	PL_savestack = c->savestack;
345	PL_savestack_ix = c->savestack_ix;	296	PL_savestack_ix = c->savestack_ix;
346	PL_savestack_max = c->savestack_max;	297	PL_savestack_max = c->savestack_max;
		298	#if PERL_VERSION < 9
347	PL_retstack = c->retstack;	299	PL_retstack = c->retstack;
348	PL_retstack_ix = c->retstack_ix;	300	PL_retstack_ix = c->retstack_ix;
349	PL_retstack_max = c->retstack_max;	301	PL_retstack_max = c->retstack_max;
		302	#endif
		303	PL_curpm = c->curpm;
350	PL_curcop = c->curcop;	304	PL_curcop = c->curcop;
351	PL_top_env = c->top_env;	305	PL_top_env = c->top_env;
352		306
353	if (c->defav) REPLACE_SV (GvAV (PL_defgv), c->defav);	307	if (c->defav) REPLACE_SV (GvAV (PL_defgv), c->defav);
354	if (c->defsv) REPLACE_SV (DEFSV , c->defsv);	308	if (c->defsv) REPLACE_SV (DEFSV , c->defsv);
…		…
413	}	367	}
414		368
415	PUSHs ((SV *)CvPADLIST(cv));	369	PUSHs ((SV *)CvPADLIST(cv));
416	PUSHs ((SV *)cv);	370	PUSHs ((SV *)cv);
417		371
418	get_padlist (aTHX_ cv); /* this is a monster */	372	get_padlist (aTHX_ cv);
419	}	373	}
420	}	374	}
421	#ifdef CXt_FORMAT	375	#ifdef CXt_FORMAT
422	else if (CxTYPE(cx) == CXt_FORMAT)	376	else if (CxTYPE(cx) == CXt_FORMAT)
423	{	377	{
…		…
451	c->mainstack = PL_mainstack;	405	c->mainstack = PL_mainstack;
452	c->stack_sp = PL_stack_sp;	406	c->stack_sp = PL_stack_sp;
453	c->op = PL_op;	407	c->op = PL_op;
454	c->curpad = PL_curpad;	408	c->curpad = PL_curpad;
455	c->comppad = PL_comppad;	409	c->comppad = PL_comppad;
		410	c->compcv = PL_compcv;
456	c->stack_base = PL_stack_base;	411	c->stack_base = PL_stack_base;
457	c->stack_max = PL_stack_max;	412	c->stack_max = PL_stack_max;
458	c->tmps_stack = PL_tmps_stack;	413	c->tmps_stack = PL_tmps_stack;
459	c->tmps_floor = PL_tmps_floor;	414	c->tmps_floor = PL_tmps_floor;
460	c->tmps_ix = PL_tmps_ix;	415	c->tmps_ix = PL_tmps_ix;
…		…
466	c->scopestack_ix = PL_scopestack_ix;	421	c->scopestack_ix = PL_scopestack_ix;
467	c->scopestack_max = PL_scopestack_max;	422	c->scopestack_max = PL_scopestack_max;
468	c->savestack = PL_savestack;	423	c->savestack = PL_savestack;
469	c->savestack_ix = PL_savestack_ix;	424	c->savestack_ix = PL_savestack_ix;
470	c->savestack_max = PL_savestack_max;	425	c->savestack_max = PL_savestack_max;
		426	#if PERL_VERSION < 9
471	c->retstack = PL_retstack;	427	c->retstack = PL_retstack;
472	c->retstack_ix = PL_retstack_ix;	428	c->retstack_ix = PL_retstack_ix;
473	c->retstack_max = PL_retstack_max;	429	c->retstack_max = PL_retstack_max;
		430	#endif
		431	c->curpm = PL_curpm;
474	c->curcop = PL_curcop;	432	c->curcop = PL_curcop;
475	c->top_env = PL_top_env;	433	c->top_env = PL_top_env;
476	}	434	}
477		435
478	/*	436	/*
479	* allocate various perl stacks. This is an exact copy	437	* allocate various perl stacks. This is an exact copy
480	* of perl.c:init_stacks, except that it uses less memory	438	* of perl.c:init_stacks, except that it uses less memory
481	* on the (sometimes correct) assumption that coroutines do	439	* on the (sometimes correct) assumption that coroutines do
482	* not usually need a lot of stackspace.	440	* not usually need a lot of stackspace.
483	*/	441	*/
484	STATIC void	442	static void
485	coro_init_stacks (pTHX)	443	coro_init_stacks (pTHX)
486	{	444	{
487	LOCK;	445	LOCK;
488		446
489	PL_curstackinfo = new_stackinfo(96, 1024/sizeof(PERL_CONTEXT) - 1);	447	PL_curstackinfo = new_stackinfo(96, 1024/sizeof(PERL_CONTEXT) - 1);
…		…
514		472
515	New(54,PL_savestack,96,ANY);	473	New(54,PL_savestack,96,ANY);
516	PL_savestack_ix = 0;	474	PL_savestack_ix = 0;
517	PL_savestack_max = 96;	475	PL_savestack_max = 96;
518		476
		477	#if PERL_VERSION < 9
519	New(54,PL_retstack,8,OP*);	478	New(54,PL_retstack,8,OP*);
520	PL_retstack_ix = 0;	479	PL_retstack_ix = 0;
521	PL_retstack_max = 8;	480	PL_retstack_max = 8;
		481	#endif
522		482
523	UNLOCK;	483	UNLOCK;
524	}	484	}
525		485
526	/*	486	/*
527	* destroy the stacks, the callchain etc...	487	* destroy the stacks, the callchain etc...
528	*/	488	*/
529	STATIC void	489	static void
530	destroy_stacks(pTHX)	490	destroy_stacks(pTHX)
531	{	491	{
532	if (!IN_DESTRUCT)	492	if (!IN_DESTRUCT)
533	{	493	{
534	/* is this ugly, I ask? */	494	/* is this ugly, I ask? */
…		…
566		526
567	Safefree (PL_tmps_stack);	527	Safefree (PL_tmps_stack);
568	Safefree (PL_markstack);	528	Safefree (PL_markstack);
569	Safefree (PL_scopestack);	529	Safefree (PL_scopestack);
570	Safefree (PL_savestack);	530	Safefree (PL_savestack);
		531	#if PERL_VERSION < 9
571	Safefree (PL_retstack);	532	Safefree (PL_retstack);
572	}
573
574	static void
575	allocate_stack (Coro__State ctx, int alloc)
576	{
577	coro_stack *stack;
578
579	New (0, stack, 1, coro_stack);
580
581	stack->refcnt = 1;
582	stack->usecnt = 1;
583	stack->gencnt = ctx->gencnt = 0;
584
585	if (alloc)
586	{
587	#if HAVE_MMAP
588	stack->ssize = 16384 * sizeof (long); /* mmap should do allocate-on-write for us */
589	stack->sptr = mmap (0, stack->ssize, PROT_EXEC\|PROT_READ\|PROT_WRITE, MAP_PRIVATE\|MAP_ANONYMOUS, 0, 0);
590	if (stack->sptr == (void *)-1)
591	#endif	533	#endif
592	{
593	/FIXME//D//* reasonable stack size! */
594	stack->ssize = - (8192 * sizeof (long));
595	New (0, stack->sptr, 8192, long);
596	}
597	}
598	else
599	stack->sptr = 0;
600
601	ctx->stack = stack;
602	}	534	}
603		535
604	static void	536	static void
605	deallocate_stack (Coro__State ctx)	537	setup_coro (struct coro *coro)
606	{
607	coro_stack *stack = ctx->stack;
608
609	ctx->stack = 0;
610
611	if (stack)
612	{
613	if (!--stack->refcnt)
614	{
615	#ifdef HAVE_MMAP
616	if (stack->ssize > 0 && stack->sptr)
617	munmap (stack->sptr, stack->ssize);
618	else
619	#endif
620	Safefree (stack->sptr);
621
622	Safefree (stack);
623	}
624	else if (ctx->gencnt == stack->gencnt)
625	--stack->usecnt;
626	}
627	}
628
629	static void
630	setup_coro (void *arg)
631	{	538	{
632	/*	539	/*
633	* emulate part of the perl startup here.	540	* emulate part of the perl startup here.
634	*/	541	*/
635	dTHX;	542	dTHX;
636	dSP;	543	dSP;
637	Coro__State ctx = (Coro__State)arg;	544	UNOP myop;
638	SV sub_init = (SV )get_cv (SUB_INIT, FALSE);	545	SV sub_init = (SV )get_cv (SUB_INIT, FALSE);
639		546
640	coro_init_stacks (aTHX);	547	coro_init_stacks (aTHX);
641	/PL_curcop = 0;/	548	/PL_curcop = 0;/
642	/PL_in_eval = PL_in_eval;/ /* inherit */	549	/PL_in_eval = PL_in_eval;/ /* inherit */
643	SvREFCNT_dec (GvAV (PL_defgv));	550	SvREFCNT_dec (GvAV (PL_defgv));
644	GvAV (PL_defgv) = ctx->args; ctx->args = 0;	551	GvAV (PL_defgv) = coro->args; coro->args = 0;
645		552
646	SPAGAIN;	553	SPAGAIN;
647		554
648	if (ctx->stack)	555	Zero (&myop, 1, UNOP);
649	{	556	myop.op_next = Nullop;
650	ctx->cursp = 0;	557	myop.op_flags = OPf_WANT_VOID;
651		558
		559	PL_op = (OP *)&myop;
		560
652	PUSHMARK(SP);	561	PUSHMARK(SP);
		562	XPUSHs (sub_init);
653	PUTBACK;	563	PUTBACK;
654	(void) call_sv (sub_init, G_VOID\|G_NOARGS\|G_EVAL);	564	PL_op = PL_ppaddr[OP_ENTERSUB](aTHX);
		565	SPAGAIN;
655		566
656	if (SvTRUE (ERRSV))	567	ENTER; /* necessary e.g. for dounwind */
657	croak (NULL);	568	}
658	else	569
659	croak ("FATAL: CCTXT coroutine returned!");	570	static void
		571	transfer_tail ()
		572	{
		573	if (coro_mortal)
		574	{
		575	SvREFCNT_dec (coro_mortal);
		576	coro_mortal = 0;
660	}	577	}
661	else
662	{
663	UNOP myop;
664		578
665	PL_op = (OP *)&myop;	579	UNLOCK;
666
667	Zero(&myop, 1, UNOP);
668	myop.op_next = Nullop;
669	myop.op_flags = OPf_WANT_VOID;
670
671	PUSHMARK(SP);
672	XPUSHs (sub_init);
673	/*
674	* the next line is slightly wrong, as PL_op->op_next
675	* is actually being executed so we skip the first op.
676	* that doesn't matter, though, since it is only
677	* pp_nextstate and we never return...
678	* ah yes, and I don't care anyways ;)
679	*/
680	PUTBACK;
681	PL_op = PL_ppaddr[OP_ENTERSUB](aTHX);
682	SPAGAIN;
683
684	ENTER; /* necessary e.g. for dounwind */
685	}
686	}	580	}
687		581
688	static void	582	static void
689	continue_coro (void *arg)	583	coro_run (void *arg)
690	{	584	{
691	/*	585	/*
692	* this is a _very_ stripped down perl interpreter ;)	586	* this is a _very_ stripped down perl interpreter ;)
693	*/	587	*/
694	dTHX;	588	dTHX;
695	Coro__State ctx = (Coro__State)arg;
696	JMPENV coro_start_env;
697		589
		590	transfer_tail ();
		591
698	PL_top_env = &ctx->start_env;	592	PL_top_env = &PL_start_env;
699
700	ctx->cursp = 0;
701	PL_op = PL_op->op_next;	593	PL_restartop = PL_op->op_next;
702	CALLRUNOPS(aTHX);	594	/* somebody will hit me for both perl_run and PL_restart_top */
		595	perl_run (aTHX_ PERL_GET_CONTEXT);
703		596
704	abort ();	597	abort ();
705	}	598	}
706		599
707	STATIC void	600	static coro_stack *
		601	stack_new ()
		602	{
		603	coro_stack *stack;
		604
		605	New (0, stack, 1, coro_stack);
		606
		607	#if HAVE_MMAP
		608
		609	stack->ssize = ((STACKSIZE * sizeof (long) + PAGESIZE - 1) / PAGESIZE + STACKGUARD) * PAGESIZE; /* mmap should do allocate-on-write for us */
		610	stack->sptr = mmap (0, stack->ssize, PROT_EXEC\|PROT_READ\|PROT_WRITE, MAP_PRIVATE\|MAP_ANONYMOUS, 0, 0);
		611
		612	if (stack->sptr == (void *)-1)
		613	{
		614	fprintf (stderr, "FATAL: unable to mmap stack for coroutine\n");
		615	_exit (EXIT_FAILURE);
		616	}
		617
		618	mprotect (stack->sptr, STACKGUARD * PAGESIZE, PROT_NONE);
		619
		620	#else
		621
		622	stack->ssize = STACKSIZE * (long)sizeof (long);
		623	New (0, stack->sptr, STACKSIZE, long);
		624
		625	if (!stack->sptr)
		626	{
		627	fprintf (stderr, "FATAL: unable to malloc stack for coroutine\n");
		628	_exit (EXIT_FAILURE);
		629	}
		630
		631	#endif
		632
		633	coro_create (&stack->cctx, coro_run, 0, stack->sptr, stack->ssize);
		634
		635	return stack;
		636	}
		637
		638	static void
		639	stack_free (coro_stack *stack)
		640	{
		641	if (!stack \|\| stack == main_stack)
		642	return;
		643
		644	#if HAVE_MMAP
		645	munmap (stack->sptr, stack->ssize);
		646	#else
		647	Safefree (stack->sptr);
		648	#endif
		649
		650	Safefree (stack);
		651	}
		652
		653	static coro_stack *stack_first;
		654
		655	static void
		656	stack_get (struct coro *coro)
		657	{
		658	if (stack_first)
		659	{
		660	coro->stack = stack_first;
		661	stack_first = stack_first->next;
		662	}
		663	else
		664	coro->stack = stack_new ();
		665	}
		666
		667	static void
		668	stack_put (coro_stack *stack)
		669	{
		670	stack->next = stack_first;
		671	stack_first = stack;
		672	}
		673
		674	/* never call directly, always through the coro_state_transfer global variable */
		675	static void
708	transfer (pTHX_ struct coro prev, struct coro next, int flags)	676	transfer_impl (pTHX_ struct coro prev, struct coro next, int flags)
709	{	677	{
710	dSTACKLEVEL;	678	dSTACKLEVEL;
711		679
		680	/* sometimes transfer is only called to set idle_sp */
		681	if (!prev->stack->idle_sp)
		682	prev->stack->idle_sp = stacklevel;
		683
		684	LOCK;
		685
712	if (prev != next)	686	if (prev != next)
713	{	687	{
714	if (next->mainstack)	688	coro_stack *prev_stack = prev->stack;
		689
		690	/* possibly "free" the stack */
		691	if (prev_stack->idle_sp == stacklevel)
715	{	692	{
716	LOCK;	693	stack_put (prev_stack);
		694	prev->stack = 0;
		695	}
		696
		697	if (!next->mainstack)
		698	{
		699	/* first get rid of the old state */
		700	SAVE (prev, -1);
		701	/* setup coroutine call */
		702	setup_coro (next);
		703	next->stack = 0;
		704	}
		705	else
		706	{
717	SAVE (prev, flags);	707	SAVE (prev, flags);
718	LOAD (next);	708	LOAD (next);
719	UNLOCK;
720
721	/* mark this state as in-use */
722	next->mainstack = 0;
723	next->tmps_ix = -2;
724
725	/* stacklevel changed? if yes, grab the stack for us! */
726	if (flags & TRANSFER_SAVE_CCTXT)
727	{
728	if (!prev->stack)
729	allocate_stack (prev, 0);
730	else if (prev->cursp != stacklevel
731	&& prev->stack->usecnt > 1)
732	{
733	prev->gencnt = ++prev->stack->gencnt;
734	prev->stack->usecnt = 1;
735	}
736
737	/* has our stack been invalidated? */
738	if (next->stack && next->stack->gencnt != next->gencnt)
739	{
740	deallocate_stack (next);
741	allocate_stack (next, 1);
742	coro_create (&(next->stack->cctx),
743	continue_coro, (void *)next,
744	next->stack->sptr, labs (next->stack->ssize));
745	}
746
747	coro_transfer (&(prev->stack->cctx), &(next->stack->cctx));
748	prev->cursp = stacklevel;
749	/* don't add any code here */
750	}
751	else
752	next->cursp = stacklevel;
753	}	709	}
754	else if (next->tmps_ix == -2)
755	croak ("tried to transfer to running coroutine");
756	else
757	{
758	LOCK;
759	SAVE (prev, -1); /* first get rid of the old state */
760	UNLOCK;
761		710
762	if (flags & TRANSFER_SAVE_CCTXT)	711	if (!next->stack)
763	{	712	stack_get (next);
764	if (!prev->stack)
765	allocate_stack (prev, 0);
766		713
767	if (prev->stack->sptr && flags & TRANSFER_LAZY_STACK)	714	if (prev_stack != next->stack)
768	{
769	PL_top_env = &next->start_env;
770
771	setup_coro (next);
772	next->cursp = stacklevel;
773
774	prev->stack->refcnt++;
775	prev->stack->usecnt++;
776	next->stack = prev->stack;
777	next->gencnt = prev->gencnt;
778	}
779	else
780	{
781	assert (!next->stack);
782	allocate_stack (next, 1);
783	coro_create (&(next->stack->cctx),
784	setup_coro, (void *)next,
785	next->stack->sptr, labs (next->stack->ssize));
786	coro_transfer (&(prev->stack->cctx), &(next->stack->cctx));	715	coro_transfer (&prev_stack->cctx, &next->stack->cctx);
787	prev->cursp = stacklevel;
788	/* don't add any code here */
789	}
790	}
791	else
792	{
793	setup_coro (next);
794	next->cursp = stacklevel;
795	}
796	}
797	}	716	}
798		717
799	LOCK;	718	transfer_tail ();
800	if (coro_mortal)	719	}
		720
		721	/* use this function pointer to call the above function */
		722	/* this is done to increase chances of the compiler not inlining the call */
		723	void (coro_state_transfer)(pTHX_ struct coro prev, struct coro *next, int flags) = transfer_impl;
		724
		725	static void
		726	coro_state_destroy (struct coro *coro)
		727	{
		728	if (coro->refcnt--)
		729	return;
		730
		731	if (coro->mainstack && coro->mainstack != main_mainstack)
801	{	732	{
802	SvREFCNT_dec (coro_mortal);	733	struct coro temp;
		734
		735	SAVE (aTHX_ (&temp), TRANSFER_SAVE_ALL);
		736	LOAD (aTHX_ coro);
		737
		738	destroy_stacks (aTHX);
		739
		740	LOAD ((&temp)); /* this will get rid of defsv etc.. */
		741
803	coro_mortal = 0;	742	coro->mainstack = 0;
804	}	743	}
805	UNLOCK;
806	}
807		744
808	#define SV_CORO(sv,func) \	745	stack_free (coro->stack);
809	do { \	746	SvREFCNT_dec (coro->args);
810	if (SvROK (sv)) \	747	Safefree (coro);
811	sv = SvRV (sv); \	748	}
812	\
813	if (SvTYPE (sv) == SVt_PVHV) \
814	{ \
815	HE he = hv_fetch_ent ((HV )sv, ucoro_state_sv, 0, ucoro_state_hash); \
816	\
817	if (!he) \
818	croak ("%s() -- %s is a hashref but lacks the " UCORO_STATE " key", func, # sv); \
819	\
820	(sv) = SvRV (HeVAL(he)); \
821	} \
822	\
823	/* must also be changed inside Coro::Cont::yield */ \
824	if (!SvOBJECT (sv) \|\| SvSTASH (sv) != coro_state_stash) \
825	croak ("%s() -- %s is not (and contains not) a Coro::State object", func, # sv); \
826	\
827	} while(0)
828		749
829	#define SvSTATE(sv) (struct coro *)SvIV (sv)
830
831	static void	750	static int
		751	coro_state_clear (SV sv, MAGIC mg)
		752	{
		753	struct coro coro = (struct coro )mg->mg_ptr;
		754	mg->mg_ptr = 0;
		755
		756	coro_state_destroy (coro);
		757
		758	return 0;
		759	}
		760
		761	static int
		762	coro_state_dup (MAGIC mg, CLONE_PARAMS params)
		763	{
		764	struct coro coro = (struct coro )mg->mg_ptr;
		765
		766	++coro->refcnt;
		767
		768	return 0;
		769	}
		770
		771	static MGVTBL coro_state_vtbl = { 0, 0, 0, 0, coro_state_clear, 0, coro_state_dup, 0 };
		772
		773	static struct coro *
		774	SvSTATE (SV *coro)
		775	{
		776	HV *stash;
		777	MAGIC *mg;
		778
		779	if (SvROK (coro))
		780	coro = SvRV (coro);
		781
		782	stash = SvSTASH (coro);
		783	if (stash != coro_stash && stash != coro_state_stash)
		784	{
		785	/* very slow, but rare, check */
		786	if (!sv_derived_from (sv_2mortal (newRV_inc (coro)), "Coro::State"))
		787	croak ("Coro::State object required");
		788	}
		789
		790	mg = SvMAGIC (coro);
		791	assert (mg->mg_type == PERL_MAGIC_ext);
		792	return (struct coro *)mg->mg_ptr;
		793	}
		794
		795	static void
832	api_transfer(pTHX_ SV prev, SV next, int flags)	796	api_transfer (pTHX_ SV prev, SV next, int flags)
833	{	797	{
834	SV_CORO (prev, "Coro::transfer");
835	SV_CORO (next, "Coro::transfer");
836
837	transfer (aTHX_ SvSTATE (prev), SvSTATE (next), flags);	798	coro_state_transfer (aTHX_ SvSTATE (prev), SvSTATE (next), flags);
838	}	799	}
839		800
840	/ Coro ******************************************************************/	801	/ Coro ******************************************************************/
841		802
842	#define PRIO_MAX 3	803	#define PRIO_MAX 3
…		…
846	#define PRIO_IDLE -3	807	#define PRIO_IDLE -3
847	#define PRIO_MIN -4	808	#define PRIO_MIN -4
848		809
849	/* for Coro.pm */	810	/* for Coro.pm */
850	static GV coro_current, coro_idle;	811	static GV coro_current, coro_idle;
851	static AV *coro_ready[PRIO_MAX-PRIO_MIN+1];	812	static AV *coro_ready [PRIO_MAX-PRIO_MIN+1];
852	static int coro_nready;	813	static int coro_nready;
853		814
854	static void	815	static void
855	coro_enq (pTHX_ SV *sv)	816	coro_enq (pTHX_ SV *sv)
856	{	817	{
		818	int prio;
		819
857	if (SvTYPE (sv) == SVt_PVHV)	820	if (SvTYPE (sv) != SVt_PVHV)
858	{
859	SV *xprio = hv_fetch ((HV )sv, "prio", 4, 0);
860	int prio = xprio ? SvIV (*xprio) : PRIO_NORMAL;
861
862	prio = prio > PRIO_MAX ? PRIO_MAX
863	: prio < PRIO_MIN ? PRIO_MIN
864	: prio;
865
866	av_push (coro_ready [prio - PRIO_MIN], sv);
867	coro_nready++;
868
869	return;
870	}
871
872	croak ("Coro::ready tried to enqueue something that is not a coroutine");	821	croak ("Coro::ready tried to enqueue something that is not a coroutine");
		822
		823	prio = SvSTATE (sv)->prio;
		824
		825	av_push (coro_ready [prio - PRIO_MIN], sv);
		826	coro_nready++;
873	}	827	}
874		828
875	static SV *	829	static SV *
876	coro_deq (pTHX_ int min_prio)	830	coro_deq (pTHX_ int min_prio)
877	{	831	{
…		…
880	min_prio -= PRIO_MIN;	834	min_prio -= PRIO_MIN;
881	if (min_prio < 0)	835	if (min_prio < 0)
882	min_prio = 0;	836	min_prio = 0;
883		837
884	for (prio = PRIO_MAX - PRIO_MIN + 1; --prio >= min_prio; )	838	for (prio = PRIO_MAX - PRIO_MIN + 1; --prio >= min_prio; )
885	if (av_len (coro_ready[prio]) >= 0)	839	if (AvFILLp (coro_ready [prio]) >= 0)
886	{	840	{
887	coro_nready--;	841	coro_nready--;
888	return av_shift (coro_ready[prio]);	842	return av_shift (coro_ready [prio]);
889	}	843	}
890		844
891	return 0;	845	return 0;
892	}	846	}
893		847
…		…
908	api_schedule (void)	862	api_schedule (void)
909	{	863	{
910	dTHX;	864	dTHX;
911		865
912	SV prev, next;	866	SV prev, next;
		867	SV *current = GvSV (coro_current);
913		868
		869	for (;;)
		870	{
914	LOCK;	871	LOCK;
915		872
916	prev = SvRV (GvSV (coro_current));
917	next = coro_deq (aTHX_ PRIO_MIN);	873	next = coro_deq (aTHX_ PRIO_MIN);
918		874
919	if (!next)	875	if (next)
920	next = SvREFCNT_inc (SvRV (GvSV (coro_idle)));	876	break;
		877
		878	UNLOCK;
		879
		880	{
		881	dSP;
		882
		883	ENTER;
		884	SAVETMPS;
		885
		886	PUSHMARK (SP);
		887	PUTBACK;
		888	call_sv (GvSV (coro_idle), G_DISCARD);
		889
		890	FREETMPS;
		891	LEAVE;
		892	}
		893	}
		894
		895	prev = SvRV (current);
		896	SvRV (current) = next;
921		897
922	/* free this only after the transfer */	898	/* free this only after the transfer */
923	coro_mortal = prev;	899	coro_mortal = prev;
924	SV_CORO (prev, "Coro::schedule");
925
926	SvRV (GvSV (coro_current)) = next;
927
928	SV_CORO (next, "Coro::schedule");
929		900
930	UNLOCK;	901	UNLOCK;
931		902
932	transfer (aTHX_ SvSTATE (prev), SvSTATE (next),	903	coro_state_transfer (aTHX_ SvSTATE (prev), SvSTATE (next), TRANSFER_SAVE_ALL);
933	TRANSFER_SAVE_ALL \| TRANSFER_LAZY_STACK);
934	}	904	}
		905
		906	static int coro_cede_self;
935		907
936	static void	908	static void
937	api_cede (void)	909	api_cede (void)
938	{	910	{
939	dTHX;	911	dTHX;
		912	SV *current = SvREFCNT_inc (SvRV (GvSV (coro_current)));
940		913
941	LOCK;	914	LOCK;
942	coro_enq (aTHX_ SvREFCNT_inc (SvRV (GvSV (coro_current))));	915
		916	if (coro_cede_self)
		917	{
		918	AV *runqueue = coro_ready [PRIO_MAX - PRIO_MIN];
		919	av_unshift (runqueue, 1);
		920	av_store (runqueue, 0, current);
		921	coro_nready++;
		922	coro_cede_self = 0;
		923	}
		924	else
		925	coro_enq (aTHX_ current);
		926
943	UNLOCK;	927	UNLOCK;
944		928
945	api_schedule ();	929	api_schedule ();
946	}	930	}
947		931
948	MODULE = Coro::State PACKAGE = Coro::State	932	MODULE = Coro::State PACKAGE = Coro::State
949		933
950	PROTOTYPES: ENABLE	934	PROTOTYPES: DISABLE
951		935
952	BOOT:	936	BOOT:
953	{ /* {} necessary for stoopid perl-5.6.x */	937	{
954	#ifdef USE_ITHREADS	938	#ifdef USE_ITHREADS
955	MUTEX_INIT (&coro_mutex);	939	MUTEX_INIT (&coro_mutex);
956	#endif	940	#endif
		941	BOOT_PAGESIZE;
957		942
958	ucoro_state_sv = newSVpv (UCORO_STATE, sizeof(UCORO_STATE) - 1);
959	PERL_HASH(ucoro_state_hash, UCORO_STATE, sizeof(UCORO_STATE) - 1);
960	coro_state_stash = gv_stashpv ("Coro::State", TRUE);	943	coro_state_stash = gv_stashpv ("Coro::State", TRUE);
961		944
962	newCONSTSUB (coro_state_stash, "SAVE_DEFAV", newSViv (TRANSFER_SAVE_DEFAV));	945	newCONSTSUB (coro_state_stash, "SAVE_DEFAV", newSViv (TRANSFER_SAVE_DEFAV));
963	newCONSTSUB (coro_state_stash, "SAVE_DEFSV", newSViv (TRANSFER_SAVE_DEFSV));	946	newCONSTSUB (coro_state_stash, "SAVE_DEFSV", newSViv (TRANSFER_SAVE_DEFSV));
964	newCONSTSUB (coro_state_stash, "SAVE_ERRSV", newSViv (TRANSFER_SAVE_ERRSV));	947	newCONSTSUB (coro_state_stash, "SAVE_ERRSV", newSViv (TRANSFER_SAVE_ERRSV));
965	newCONSTSUB (coro_state_stash, "SAVE_CCTXT", newSViv (TRANSFER_SAVE_CCTXT));
966		948
967	main_mainstack = PL_mainstack;	949	main_mainstack = PL_mainstack;
968		950
969	coroapi.ver = CORO_API_VERSION;	951	coroapi.ver = CORO_API_VERSION;
970	coroapi.transfer = api_transfer;	952	coroapi.transfer = api_transfer;
971	}
972		953
973	Coro::State	954	Newz (0, main_stack, 1, coro_stack);
974	_newprocess(args)	955	main_stack->idle_sp = (void *)-1;
975	SV * args	956
976	PROTOTYPE: $	957	assert (("PRIO_NORMAL must be 0", !PRIO_NORMAL));
		958	}
		959
		960	SV *
		961	new (char *klass, ...)
977	CODE:	962	CODE:
978	Coro__State coro;	963	{
		964	struct coro *coro;
		965	HV *hv;
		966	int i;
979		967
980	if (!SvROK (args) \|\| SvTYPE (SvRV (args)) != SVt_PVAV)
981	croak ("Coro::State::_newprocess expects an arrayref");
982
983	Newz (0, coro, 1, struct coro);	968	Newz (0, coro, 1, struct coro);
		969	coro->args = newAV ();
984		970
985	coro->args = (AV *)SvREFCNT_inc (SvRV (args));	971	hv = newHV ();
		972	sv_magicext ((SV )hv, 0, PERL_MAGIC_ext, &coro_state_vtbl, (char )coro, 0)->mg_flags \|= MGf_DUP;
		973	RETVAL = sv_bless (newRV_noinc ((SV *)hv), gv_stashpv (klass, 1));
		974
		975	av_push (coro->args, newSVsv (RETVAL));
		976	for (i = 1; i < items; i++)
		977	av_push (coro->args, newSVsv (ST (i)));
		978
		979	coro->stack = main_stack;
986	/coro->mainstack = 0; //actual work is done inside transfer /	980	/coro->mainstack = 0; //actual work is done inside transfer /
987	/coro->stack = 0;/	981	/coro->stack = 0;/
988		982	}
989	/* same as JMPENV_BOOTSTRAP */
990	/* we might be able to recycle start_env, but safe is safe */
991	/Zero(&coro->start_env, 1, JMPENV);/
992	coro->start_env.je_ret = -1;
993	coro->start_env.je_mustcatch = TRUE;
994
995	RETVAL = coro;
996	OUTPUT:	983	OUTPUT:
997	RETVAL	984	RETVAL
998		985
999	void	986	void
1000	transfer(prev, next, flags)	987	transfer (prev, next, flags)
1001	SV *prev	988	SV *prev
1002	SV *next	989	SV *next
1003	int flags	990	int flags
1004	PROTOTYPE: @
1005	CODE:	991	CODE:
1006	PUTBACK;	992	PUTBACK;
1007	SV_CORO (next, "Coro::transfer");
1008	SV_CORO (prev, "Coro::transfer");
1009	transfer (aTHX_ SvSTATE (prev), SvSTATE (next), flags);	993	coro_state_transfer (aTHX_ SvSTATE (prev), SvSTATE (next), flags);
1010	SPAGAIN;	994	SPAGAIN;
1011		995
		996	int
		997	prio (Coro::State coro, int newprio = 0)
		998	ALIAS:
		999	nice = 1
		1000	CODE:
		1001	{
		1002	RETVAL = coro->prio;
		1003
		1004	if (items > 1)
		1005	{
		1006	if (ix)
		1007	newprio += coro->prio;
		1008
		1009	if (newprio < PRIO_MIN) newprio = PRIO_MIN;
		1010	if (newprio > PRIO_MAX) newprio = PRIO_MAX;
		1011
		1012	coro->prio = newprio;
		1013	}
		1014	}
		1015
1012	void	1016	void
1013	DESTROY(coro)	1017	_clear_idle_sp (Coro::State self)
1014	Coro::State coro	1018	CODE:
1015	CODE:	1019	self->stack->idle_sp = 0;
1016
1017	if (coro->mainstack && coro->mainstack != main_mainstack)
1018	{
1019	struct coro temp;
1020
1021	PUTBACK;
1022	SAVE (aTHX_ (&temp), TRANSFER_SAVE_ALL);
1023	LOAD (aTHX_ coro);
1024	SPAGAIN;
1025
1026	destroy_stacks (aTHX);
1027
1028	LOAD ((&temp)); /* this will get rid of defsv etc.. */
1029	SPAGAIN;
1030
1031	coro->mainstack = 0;
1032	}
1033
1034	deallocate_stack (coro);
1035	SvREFCNT_dec (coro->args);
1036	Safefree (coro);
1037		1020
1038	void	1021	void
		1022	_clone_state_from (SV dst, SV src)
		1023	CODE:
		1024	{
		1025	struct coro *coro_src = SvSTATE (src);
		1026
		1027	sv_unmagic (SvRV (dst), PERL_MAGIC_ext);
		1028
		1029	++coro_src->refcnt;
		1030	sv_magicext (SvRV (dst), 0, PERL_MAGIC_ext, &coro_state_vtbl, (char *)coro_src, 0)->mg_flags \|= MGf_DUP;
		1031	}
		1032
		1033	void
1039	_exit(code)	1034	_exit (code)
1040	int code	1035	int code
1041	PROTOTYPE: $	1036	PROTOTYPE: $
1042	CODE:	1037	CODE:
1043	_exit (code);	1038	_exit (code);
1044		1039
1045	MODULE = Coro::State PACKAGE = Coro::Cont	1040	MODULE = Coro::State PACKAGE = Coro::Cont
1046		1041
1047	# this is slightly dirty (should expose a c-level api)
1048
1049	void	1042	void
1050	yield(...)	1043	yield (...)
1051	PROTOTYPE: @	1044	PROTOTYPE: @
1052	CODE:	1045	CODE:
1053	static SV *returnstk;	1046	{
		1047	SV *yieldstack;
1054	SV *sv;	1048	SV *sv;
1055	AV *defav = GvAV (PL_defgv);	1049	AV *defav = GvAV (PL_defgv);
1056	struct coro prev, next;	1050	struct coro prev, next;
1057		1051
1058	if (!returnstk)	1052	yieldstack = *hv_fetch (
1059	returnstk = SvRV ((SV *)get_sv ("Coro::Cont::return", FALSE));	1053	(HV *)SvRV (GvSV (coro_current)),
		1054	"yieldstack", sizeof ("yieldstack") - 1,
		1055	0
		1056	);
1060		1057
1061	/* set up @_ -- ugly */	1058	/* set up @_ -- ugly */
1062	av_clear (defav);	1059	av_clear (defav);
1063	av_fill (defav, items - 1);	1060	av_fill (defav, items - 1);
1064	while (items--)	1061	while (items--)
1065	av_store (defav, items, SvREFCNT_inc (ST(items)));	1062	av_store (defav, items, SvREFCNT_inc (ST(items)));
1066		1063
1067	SvGETMAGIC (returnstk); /* isn't documentation wrong for mg_get? */
1068	sv = av_pop ((AV *)SvRV (returnstk));	1064	sv = av_pop ((AV *)SvRV (yieldstack));
1069	prev = (struct coro )SvIV ((SV)SvRV (av_fetch ((AV )SvRV (sv), 0, 0)));	1065	prev = SvSTATE (av_fetch ((AV )SvRV (sv), 0, 0));
1070	next = (struct coro )SvIV ((SV)SvRV (av_fetch ((AV )SvRV (sv), 1, 0)));	1066	next = SvSTATE (av_fetch ((AV )SvRV (sv), 1, 0));
1071	SvREFCNT_dec (sv);	1067	SvREFCNT_dec (sv);
1072		1068
1073	transfer (aTHX_ prev, next, 0);	1069	coro_state_transfer (aTHX_ prev, next, 0);
		1070	}
1074		1071
1075	MODULE = Coro::State PACKAGE = Coro	1072	MODULE = Coro::State PACKAGE = Coro
1076		1073
1077	# this is slightly dirty (should expose a c-level api)
1078
1079	BOOT:	1074	BOOT:
1080	{	1075	{
1081	int i;	1076	int i;
		1077
1082	HV *stash = gv_stashpv ("Coro", TRUE);	1078	coro_stash = gv_stashpv ("Coro", TRUE);
1083		1079
1084	newCONSTSUB (stash, "PRIO_MAX", newSViv (PRIO_MAX));	1080	newCONSTSUB (coro_stash, "PRIO_MAX", newSViv (PRIO_MAX));
1085	newCONSTSUB (stash, "PRIO_HIGH", newSViv (PRIO_HIGH));	1081	newCONSTSUB (coro_stash, "PRIO_HIGH", newSViv (PRIO_HIGH));
1086	newCONSTSUB (stash, "PRIO_NORMAL", newSViv (PRIO_NORMAL));	1082	newCONSTSUB (coro_stash, "PRIO_NORMAL", newSViv (PRIO_NORMAL));
1087	newCONSTSUB (stash, "PRIO_LOW", newSViv (PRIO_LOW));	1083	newCONSTSUB (coro_stash, "PRIO_LOW", newSViv (PRIO_LOW));
1088	newCONSTSUB (stash, "PRIO_IDLE", newSViv (PRIO_IDLE));	1084	newCONSTSUB (coro_stash, "PRIO_IDLE", newSViv (PRIO_IDLE));
1089	newCONSTSUB (stash, "PRIO_MIN", newSViv (PRIO_MIN));	1085	newCONSTSUB (coro_stash, "PRIO_MIN", newSViv (PRIO_MIN));
1090		1086
1091	coro_current = gv_fetchpv ("Coro::current", TRUE, SVt_PV);	1087	coro_current = gv_fetchpv ("Coro::current", TRUE, SVt_PV);
1092	coro_idle = gv_fetchpv ("Coro::idle" , TRUE, SVt_PV);	1088	coro_idle = gv_fetchpv ("Coro::idle" , TRUE, SVt_PV);
1093		1089
1094	for (i = PRIO_MAX - PRIO_MIN + 1; i--; )	1090	for (i = PRIO_MAX - PRIO_MIN + 1; i--; )
…		…
1102	coroapi.ready = api_ready;	1098	coroapi.ready = api_ready;
1103	coroapi.nready = &coro_nready;	1099	coroapi.nready = &coro_nready;
1104	coroapi.current = coro_current;	1100	coroapi.current = coro_current;
1105		1101
1106	GCoroAPI = &coroapi;	1102	GCoroAPI = &coroapi;
1107	sv_setiv(sv, (IV)&coroapi);	1103	sv_setiv (sv, (IV)&coroapi);
1108	SvREADONLY_on(sv);	1104	SvREADONLY_on (sv);
1109	}	1105	}
1110	}	1106	}
1111		1107
1112	#if !PERL_MICRO
1113
1114	void	1108	void
1115	ready(self)	1109	ready (SV *self)
1116	SV * self
1117	PROTOTYPE: $	1110	PROTOTYPE: $
1118	CODE:	1111	CODE:
1119	api_ready (self);	1112	api_ready (self);
1120		1113
1121	#endif
1122
1123	int	1114	int
1124	nready(...)	1115	nready (...)
1125	PROTOTYPE:	1116	PROTOTYPE:
1126	CODE:	1117	CODE:
1127	RETVAL = coro_nready;	1118	RETVAL = coro_nready;
1128	OUTPUT:	1119	OUTPUT:
1129	RETVAL	1120	RETVAL
1130		1121
1131	void	1122	void
1132	schedule(...)	1123	schedule (...)
1133	PROTOTYPE:	1124	PROTOTYPE:
1134	CODE:	1125	CODE:
1135	api_schedule ();	1126	api_schedule ();
1136		1127
1137	void	1128	void
		1129	_set_cede_self ()
		1130	CODE:
		1131	coro_cede_self = 1;
		1132
		1133	void
1138	cede(...)	1134	cede (...)
1139	PROTOTYPE:	1135	PROTOTYPE:
1140	CODE:	1136	CODE:
1141	api_cede ();	1137	api_cede ();
1142		1138
		1139	MODULE = Coro::State PACKAGE = Coro::AIO
		1140
		1141	SV *
		1142	_get_state ()
		1143	CODE:
		1144	{
		1145	struct {
		1146	int errorno;
		1147	int laststype;
		1148	int laststatval;
		1149	Stat_t statcache;
		1150	} data;
		1151
		1152	data.errorno = errno;
		1153	data.laststype = PL_laststype;
		1154	data.laststatval = PL_laststatval;
		1155	data.statcache = PL_statcache;
		1156
		1157	RETVAL = newSVpvn ((char *)&data, sizeof data);
		1158	}
		1159	OUTPUT:
		1160	RETVAL
		1161
		1162	void
		1163	_set_state (char *data_)
		1164	PROTOTYPE: $
		1165	CODE:
		1166	{
		1167	struct {
		1168	int errorno;
		1169	int laststype;
		1170	int laststatval;
		1171	Stat_t statcache;
		1172	} data = (void )data_;
		1173
		1174	errno = data->errorno;
		1175	PL_laststype = data->laststype;
		1176	PL_laststatval = data->laststatval;
		1177	PL_statcache = data->statcache;
		1178	}

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Comparing Coro/Coro/State.xs (file contents): Revision 1.61 by root, Tue Aug 10 01:56:30 2004 UTC vs. Revision 1.89 by root, Sat Nov 25 00:40:26 2006 UTC

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Comparing Coro/Coro/State.xs (file contents):
Revision 1.61 by root, Tue Aug 10 01:56:30 2004 UTC vs.
Revision 1.89 by root, Sat Nov 25 00:40:26 2006 UTC