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

Comparing Coro/Coro/State.xs (file contents):
Revision 1.59 by root, Mon Jul 19 01:32:27 2004 UTC vs.
Revision 1.90 by root, Sat Nov 25 00:56:35 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);
		213
		214	SvREFCNT_dec (av);
		215
		216	return 0;
275	}	217	}
276		218
277	#define PERL_MAGIC_coro PERL_MAGIC_ext	219	#define PERL_MAGIC_coro PERL_MAGIC_ext
278		220
279	static MGVTBL vtbl_coro = {0, 0, 0, 0, coro_cv_free};	221	static MGVTBL vtbl_coro = {0, 0, 0, 0, coro_cv_free};
280		222
281	/* the next two functions merely cache the padlists */	223	/* the next two functions merely cache the padlists */
282	STATIC void	224	static void
283	get_padlist (pTHX_ CV *cv)	225	get_padlist (pTHX_ CV *cv)
284	{	226	{
285	MAGIC mg = mg_find ((SV )cv, PERL_MAGIC_coro);	227	MAGIC mg = mg_find ((SV )cv, PERL_MAGIC_coro);
286		228
287	if (mg && AvFILLp ((AV *)mg->mg_obj) >= 0)	229	if (mg && AvFILLp ((AV *)mg->mg_obj) >= 0)
288	CvPADLIST (cv) = (AV )av_pop ((AV )mg->mg_obj);	230	CvPADLIST (cv) = (AV )av_pop ((AV )mg->mg_obj);
289	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
290	CvPADLIST (cv) = clone_padlist (aTHX_ CvPADLIST (cv));	240	CvPADLIST (cv) = coro_clone_padlist (aTHX_ cv);
		241	#endif
		242	}
291	}	243	}
292		244
293	STATIC void	245	static void
294	put_padlist (pTHX_ CV *cv)	246	put_padlist (pTHX_ CV *cv)
295	{	247	{
296	MAGIC mg = mg_find ((SV )cv, PERL_MAGIC_coro);	248	MAGIC mg = mg_find ((SV )cv, PERL_MAGIC_coro);
297		249
298	if (!mg)	250	if (!mg)
…		…
325	PL_mainstack = c->mainstack;	277	PL_mainstack = c->mainstack;
326	PL_stack_sp = c->stack_sp;	278	PL_stack_sp = c->stack_sp;
327	PL_op = c->op;	279	PL_op = c->op;
328	PL_curpad = c->curpad;	280	PL_curpad = c->curpad;
329	PL_comppad = c->comppad;	281	PL_comppad = c->comppad;
		282	PL_compcv = c->compcv;
330	PL_stack_base = c->stack_base;	283	PL_stack_base = c->stack_base;
331	PL_stack_max = c->stack_max;	284	PL_stack_max = c->stack_max;
332	PL_tmps_stack = c->tmps_stack;	285	PL_tmps_stack = c->tmps_stack;
333	PL_tmps_floor = c->tmps_floor;	286	PL_tmps_floor = c->tmps_floor;
334	PL_tmps_ix = c->tmps_ix;	287	PL_tmps_ix = c->tmps_ix;
…		…
340	PL_scopestack_ix = c->scopestack_ix;	293	PL_scopestack_ix = c->scopestack_ix;
341	PL_scopestack_max = c->scopestack_max;	294	PL_scopestack_max = c->scopestack_max;
342	PL_savestack = c->savestack;	295	PL_savestack = c->savestack;
343	PL_savestack_ix = c->savestack_ix;	296	PL_savestack_ix = c->savestack_ix;
344	PL_savestack_max = c->savestack_max;	297	PL_savestack_max = c->savestack_max;
		298	#if PERL_VERSION < 9
345	PL_retstack = c->retstack;	299	PL_retstack = c->retstack;
346	PL_retstack_ix = c->retstack_ix;	300	PL_retstack_ix = c->retstack_ix;
347	PL_retstack_max = c->retstack_max;	301	PL_retstack_max = c->retstack_max;
		302	#endif
		303	PL_curpm = c->curpm;
348	PL_curcop = c->curcop;	304	PL_curcop = c->curcop;
349	PL_top_env = c->top_env;	305	PL_top_env = c->top_env;
350		306
351	if (c->defav) REPLACE_SV (GvAV (PL_defgv), c->defav);	307	if (c->defav) REPLACE_SV (GvAV (PL_defgv), c->defav);
352	if (c->defsv) REPLACE_SV (DEFSV , c->defsv);	308	if (c->defsv) REPLACE_SV (DEFSV , c->defsv);
…		…
411	}	367	}
412		368
413	PUSHs ((SV *)CvPADLIST(cv));	369	PUSHs ((SV *)CvPADLIST(cv));
414	PUSHs ((SV *)cv);	370	PUSHs ((SV *)cv);
415		371
416	get_padlist (aTHX_ cv); /* this is a monster */	372	get_padlist (aTHX_ cv);
417	}	373	}
418	}	374	}
419	#ifdef CXt_FORMAT	375	#ifdef CXt_FORMAT
420	else if (CxTYPE(cx) == CXt_FORMAT)	376	else if (CxTYPE(cx) == CXt_FORMAT)
421	{	377	{
…		…
449	c->mainstack = PL_mainstack;	405	c->mainstack = PL_mainstack;
450	c->stack_sp = PL_stack_sp;	406	c->stack_sp = PL_stack_sp;
451	c->op = PL_op;	407	c->op = PL_op;
452	c->curpad = PL_curpad;	408	c->curpad = PL_curpad;
453	c->comppad = PL_comppad;	409	c->comppad = PL_comppad;
		410	c->compcv = PL_compcv;
454	c->stack_base = PL_stack_base;	411	c->stack_base = PL_stack_base;
455	c->stack_max = PL_stack_max;	412	c->stack_max = PL_stack_max;
456	c->tmps_stack = PL_tmps_stack;	413	c->tmps_stack = PL_tmps_stack;
457	c->tmps_floor = PL_tmps_floor;	414	c->tmps_floor = PL_tmps_floor;
458	c->tmps_ix = PL_tmps_ix;	415	c->tmps_ix = PL_tmps_ix;
…		…
464	c->scopestack_ix = PL_scopestack_ix;	421	c->scopestack_ix = PL_scopestack_ix;
465	c->scopestack_max = PL_scopestack_max;	422	c->scopestack_max = PL_scopestack_max;
466	c->savestack = PL_savestack;	423	c->savestack = PL_savestack;
467	c->savestack_ix = PL_savestack_ix;	424	c->savestack_ix = PL_savestack_ix;
468	c->savestack_max = PL_savestack_max;	425	c->savestack_max = PL_savestack_max;
		426	#if PERL_VERSION < 9
469	c->retstack = PL_retstack;	427	c->retstack = PL_retstack;
470	c->retstack_ix = PL_retstack_ix;	428	c->retstack_ix = PL_retstack_ix;
471	c->retstack_max = PL_retstack_max;	429	c->retstack_max = PL_retstack_max;
		430	#endif
		431	c->curpm = PL_curpm;
472	c->curcop = PL_curcop;	432	c->curcop = PL_curcop;
473	c->top_env = PL_top_env;	433	c->top_env = PL_top_env;
474	}	434	}
475		435
476	/*	436	/*
477	* allocate various perl stacks. This is an exact copy	437	* allocate various perl stacks. This is an exact copy
478	* of perl.c:init_stacks, except that it uses less memory	438	* of perl.c:init_stacks, except that it uses less memory
479	* on the (sometimes correct) assumption that coroutines do	439	* on the (sometimes correct) assumption that coroutines do
480	* not usually need a lot of stackspace.	440	* not usually need a lot of stackspace.
481	*/	441	*/
482	STATIC void	442	static void
483	coro_init_stacks (pTHX)	443	coro_init_stacks (pTHX)
484	{	444	{
485	LOCK;	445	LOCK;
486		446
487	PL_curstackinfo = new_stackinfo(96, 1024/sizeof(PERL_CONTEXT) - 1);	447	PL_curstackinfo = new_stackinfo(96, 1024/sizeof(PERL_CONTEXT) - 1);
…		…
512		472
513	New(54,PL_savestack,96,ANY);	473	New(54,PL_savestack,96,ANY);
514	PL_savestack_ix = 0;	474	PL_savestack_ix = 0;
515	PL_savestack_max = 96;	475	PL_savestack_max = 96;
516		476
		477	#if PERL_VERSION < 9
517	New(54,PL_retstack,8,OP*);	478	New(54,PL_retstack,8,OP*);
518	PL_retstack_ix = 0;	479	PL_retstack_ix = 0;
519	PL_retstack_max = 8;	480	PL_retstack_max = 8;
		481	#endif
520		482
521	UNLOCK;	483	UNLOCK;
522	}	484	}
523		485
524	/*	486	/*
525	* destroy the stacks, the callchain etc...	487	* destroy the stacks, the callchain etc...
526	*/	488	*/
527	STATIC void	489	static void
528	destroy_stacks(pTHX)	490	destroy_stacks(pTHX)
529	{	491	{
530	if (!IN_DESTRUCT)	492	if (!IN_DESTRUCT)
531	{	493	{
532	/* is this ugly, I ask? */	494	/* is this ugly, I ask? */
…		…
564		526
565	Safefree (PL_tmps_stack);	527	Safefree (PL_tmps_stack);
566	Safefree (PL_markstack);	528	Safefree (PL_markstack);
567	Safefree (PL_scopestack);	529	Safefree (PL_scopestack);
568	Safefree (PL_savestack);	530	Safefree (PL_savestack);
		531	#if PERL_VERSION < 9
569	Safefree (PL_retstack);	532	Safefree (PL_retstack);
570	}
571
572	static void
573	allocate_stack (Coro__State ctx, int alloc)
574	{
575	coro_stack *stack;
576
577	New (0, stack, 1, coro_stack);
578
579	stack->refcnt = 1;
580	stack->usecnt = 1;
581	stack->gencnt = ctx->gencnt = 0;
582
583	if (alloc)
584	{
585	#if HAVE_MMAP
586	stack->ssize = 16384 * sizeof (long); /* mmap should do allocate-on-write for us */
587	stack->sptr = mmap (0, stack->ssize, PROT_EXEC\|PROT_READ\|PROT_WRITE, MAP_PRIVATE\|MAP_ANONYMOUS, 0, 0);
588	if (stack->sptr == (void *)-1)
589	#endif	533	#endif
590	{
591	/FIXME//D//* reasonable stack size! */
592	stack->ssize = - (8192 * sizeof (long));
593	New (0, stack->sptr, 8192, long);
594	}
595	}
596	else
597	stack->sptr = 0;
598
599	ctx->stack = stack;
600	}	534	}
601		535
602	static void	536	static void
603	deallocate_stack (Coro__State ctx)	537	setup_coro (struct coro *coro)
604	{
605	coro_stack *stack = ctx->stack;
606
607	ctx->stack = 0;
608
609	if (stack)
610	{
611	if (!--stack->refcnt)
612	{
613	#ifdef HAVE_MMAP
614	if (stack->ssize > 0 && stack->sptr)
615	munmap (stack->sptr, stack->ssize);
616	else
617	#endif
618	Safefree (stack->sptr);
619
620	Safefree (stack);
621	}
622	else if (ctx->gencnt == stack->gencnt)
623	--stack->usecnt;
624	}
625	}
626
627	static void
628	setup_coro (void *arg)
629	{	538	{
630	/*	539	/*
631	* emulate part of the perl startup here.	540	* emulate part of the perl startup here.
632	*/	541	*/
633	dTHX;	542	dTHX;
634	dSP;	543	dSP;
635	Coro__State ctx = (Coro__State)arg;	544	UNOP myop;
636	SV sub_init = (SV )get_cv (SUB_INIT, FALSE);	545	SV sub_init = (SV )get_cv (SUB_INIT, FALSE);
637		546
638	coro_init_stacks (aTHX);	547	coro_init_stacks (aTHX);
639	/PL_curcop = 0;/	548	/PL_curcop = 0;/
640	/PL_in_eval = PL_in_eval;/ /* inherit */	549	/PL_in_eval = PL_in_eval;/ /* inherit */
641	SvREFCNT_dec (GvAV (PL_defgv));	550	SvREFCNT_dec (GvAV (PL_defgv));
642	GvAV (PL_defgv) = ctx->args; ctx->args = 0;	551	GvAV (PL_defgv) = coro->args; coro->args = 0;
643		552
644	SPAGAIN;	553	SPAGAIN;
645		554
646	if (ctx->stack)	555	Zero (&myop, 1, UNOP);
647	{	556	myop.op_next = Nullop;
648	ctx->cursp = 0;	557	myop.op_flags = OPf_WANT_VOID;
649		558
		559	PL_op = (OP *)&myop;
		560
650	PUSHMARK(SP);	561	PUSHMARK(SP);
		562	XPUSHs (sub_init);
651	PUTBACK;	563	PUTBACK;
652	(void) call_sv (sub_init, G_VOID\|G_NOARGS\|G_EVAL);	564	PL_op = PL_ppaddr[OP_ENTERSUB](aTHX);
		565	SPAGAIN;
653		566
654	if (SvTRUE (ERRSV))	567	ENTER; /* necessary e.g. for dounwind */
655	croak (NULL);	568	}
656	else	569
657	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;
658	}	577	}
659	else
660	{
661	UNOP myop;
662		578
663	PL_op = (OP *)&myop;	579	UNLOCK;
664
665	Zero(&myop, 1, UNOP);
666	myop.op_next = Nullop;
667	myop.op_flags = OPf_WANT_VOID;
668
669	PUSHMARK(SP);
670	XPUSHs (sub_init);
671	/*
672	* the next line is slightly wrong, as PL_op->op_next
673	* is actually being executed so we skip the first op.
674	* that doesn't matter, though, since it is only
675	* pp_nextstate and we never return...
676	* ah yes, and I don't care anyways ;)
677	*/
678	PUTBACK;
679	PL_op = PL_ppaddr[OP_ENTERSUB](aTHX);
680	SPAGAIN;
681
682	ENTER; /* necessary e.g. for dounwind */
683	}
684	}	580	}
685		581
686	static void	582	static void
687	continue_coro (void *arg)	583	coro_run (void *arg)
688	{	584	{
689	/*	585	/*
690	* this is a _very_ stripped down perl interpreter ;)	586	* this is a _very_ stripped down perl interpreter ;)
691	*/	587	*/
692	dTHX;	588	dTHX;
693	Coro__State ctx = (Coro__State)arg;
694	JMPENV coro_start_env;
695		589
		590	transfer_tail ();
		591
696	PL_top_env = &ctx->start_env;	592	PL_top_env = &PL_start_env;
697
698	ctx->cursp = 0;
699	PL_op = PL_op->op_next;	593	PL_restartop = PL_op->op_next;
700	CALLRUNOPS(aTHX);	594	/* somebody will hit me for both perl_run and PL_restart_top */
		595	perl_run (aTHX_ PERL_GET_CONTEXT);
701		596
702	abort ();	597	abort ();
703	}	598	}
704		599
705	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
706	transfer (pTHX_ struct coro prev, struct coro next, int flags)	676	transfer_impl (pTHX_ struct coro prev, struct coro next, int flags)
707	{	677	{
708	dSTACKLEVEL;	678	dSTACKLEVEL;
709		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
710	if (prev != next)	686	if (prev != next)
711	{	687	{
		688	coro_stack *prev_stack = prev->stack;
		689
		690	/* possibly "free" the stack */
		691	if (prev_stack->idle_sp == stacklevel)
		692	{
		693	stack_put (prev_stack);
		694	prev->stack = 0;
		695	}
		696
712	if (next->mainstack)	697	if (next->mainstack)
713	{	698	{
714	LOCK;	699	/* coroutine already started */
715	SAVE (prev, flags);	700	SAVE (prev, flags);
716	LOAD (next);	701	LOAD (next);
717	UNLOCK;
718
719	/* mark this state as in-use */
720	next->mainstack = 0;
721	next->tmps_ix = -2;
722
723	/* stacklevel changed? if yes, grab the stack for us! */
724	if (flags & TRANSFER_SAVE_CCTXT)
725	{
726	if (!prev->stack)
727	allocate_stack (prev, 0);
728	else if (prev->cursp != stacklevel
729	&& prev->stack->usecnt > 1)
730	{
731	prev->gencnt = ++prev->stack->gencnt;
732	prev->stack->usecnt = 1;
733	}
734
735	/* has our stack been invalidated? */
736	if (next->stack && next->stack->gencnt != next->gencnt)
737	{
738	deallocate_stack (next);
739	allocate_stack (next, 1);
740	coro_create (&(next->stack->cctx),
741	continue_coro, (void *)next,
742	next->stack->sptr, labs (next->stack->ssize));
743	}
744
745	coro_transfer (&(prev->stack->cctx), &(next->stack->cctx));
746	prev->cursp = stacklevel;
747	/* don't add any code here */
748	}
749	else
750	next->cursp = stacklevel;
751	}	702	}
752	else if (next->tmps_ix == -2)
753	croak ("tried to transfer to running coroutine");
754	else	703	else
755	{	704	{
756	LOCK;	705	/* need to start coroutine */
757	SAVE (prev, -1); /* first get rid of the old state */	706	/* first get rid of the old state */
758	UNLOCK;	707	SAVE (prev, -1);
759		708	/* setup coroutine call */
760	if (flags & TRANSFER_SAVE_CCTXT)
761	{
762	if (!prev->stack)
763	allocate_stack (prev, 0);
764
765	if (prev->stack->sptr && flags & TRANSFER_LAZY_STACK)
766	{
767	PL_top_env = &next->start_env;
768
769	setup_coro (next);
770	next->cursp = stacklevel;
771
772	prev->stack->refcnt++;
773	prev->stack->usecnt++;
774	next->stack = prev->stack;
775	next->gencnt = prev->gencnt;
776	}
777	else
778	{
779	assert (!next->stack);
780	allocate_stack (next, 1);
781	coro_create (&(next->stack->cctx),
782	setup_coro, (void *)next,
783	next->stack->sptr, labs (next->stack->ssize));
784	coro_transfer (&(prev->stack->cctx), &(next->stack->cctx));
785	prev->cursp = stacklevel;
786	/* don't add any code here */
787	}
788	}
789	else
790	{
791	setup_coro (next);	709	setup_coro (next);
792	next->cursp = stacklevel;	710	/* need to change stack from main_stack to real one */
793	}	711	next->stack = 0;
794	}	712	}
		713
		714	if (!next->stack)
		715	stack_get (next);
		716
		717	if (prev_stack != next->stack)
		718	coro_transfer (&prev_stack->cctx, &next->stack->cctx);
795	}	719	}
796		720
797	LOCK;	721	transfer_tail ();
798	if (coro_mortal)	722	}
		723
		724	/* use this function pointer to call the above function */
		725	/* this is done to increase chances of the compiler not inlining the call */
		726	void (coro_state_transfer)(pTHX_ struct coro prev, struct coro *next, int flags) = transfer_impl;
		727
		728	static void
		729	coro_state_destroy (struct coro *coro)
		730	{
		731	if (coro->refcnt--)
		732	return;
		733
		734	if (coro->mainstack && coro->mainstack != main_mainstack)
799	{	735	{
800	SvREFCNT_dec (coro_mortal);	736	struct coro temp;
		737
		738	SAVE (aTHX_ (&temp), TRANSFER_SAVE_ALL);
		739	LOAD (aTHX_ coro);
		740
		741	destroy_stacks (aTHX);
		742
		743	LOAD ((&temp)); /* this will get rid of defsv etc.. */
		744
801	coro_mortal = 0;	745	coro->mainstack = 0;
802	}	746	}
803	UNLOCK;
804	}
805		747
806	#define SV_CORO(sv,func) \	748	stack_free (coro->stack);
807	do { \	749	SvREFCNT_dec (coro->args);
808	if (SvROK (sv)) \	750	Safefree (coro);
809	sv = SvRV (sv); \	751	}
810	\
811	if (SvTYPE (sv) == SVt_PVHV) \
812	{ \
813	HE he = hv_fetch_ent ((HV )sv, ucoro_state_sv, 0, ucoro_state_hash); \
814	\
815	if (!he) \
816	croak ("%s() -- %s is a hashref but lacks the " UCORO_STATE " key", func, # sv); \
817	\
818	(sv) = SvRV (HeVAL(he)); \
819	} \
820	\
821	/* must also be changed inside Coro::Cont::yield */ \
822	if (!SvOBJECT (sv) \|\| SvSTASH (sv) != coro_state_stash) \
823	croak ("%s() -- %s is not (and contains not) a Coro::State object", func, # sv); \
824	\
825	} while(0)
826		752
827	#define SvSTATE(sv) (struct coro *)SvIV (sv)
828
829	static void	753	static int
		754	coro_state_clear (SV sv, MAGIC mg)
		755	{
		756	struct coro coro = (struct coro )mg->mg_ptr;
		757	mg->mg_ptr = 0;
		758
		759	coro_state_destroy (coro);
		760
		761	return 0;
		762	}
		763
		764	static int
		765	coro_state_dup (MAGIC mg, CLONE_PARAMS params)
		766	{
		767	struct coro coro = (struct coro )mg->mg_ptr;
		768
		769	++coro->refcnt;
		770
		771	return 0;
		772	}
		773
		774	static MGVTBL coro_state_vtbl = { 0, 0, 0, 0, coro_state_clear, 0, coro_state_dup, 0 };
		775
		776	static struct coro *
		777	SvSTATE (SV *coro)
		778	{
		779	HV *stash;
		780	MAGIC *mg;
		781
		782	if (SvROK (coro))
		783	coro = SvRV (coro);
		784
		785	stash = SvSTASH (coro);
		786	if (stash != coro_stash && stash != coro_state_stash)
		787	{
		788	/* very slow, but rare, check */
		789	if (!sv_derived_from (sv_2mortal (newRV_inc (coro)), "Coro::State"))
		790	croak ("Coro::State object required");
		791	}
		792
		793	mg = SvMAGIC (coro);
		794	assert (mg->mg_type == PERL_MAGIC_ext);
		795	return (struct coro *)mg->mg_ptr;
		796	}
		797
		798	static void
830	api_transfer(pTHX_ SV prev, SV next, int flags)	799	api_transfer (pTHX_ SV prev, SV next, int flags)
831	{	800	{
832	SV_CORO (prev, "Coro::transfer");
833	SV_CORO (next, "Coro::transfer");
834
835	transfer (aTHX_ SvSTATE (prev), SvSTATE (next), flags);	801	coro_state_transfer (aTHX_ SvSTATE (prev), SvSTATE (next), flags);
836	}	802	}
837		803
838	/ Coro ******************************************************************/	804	/ Coro ******************************************************************/
839		805
840	#define PRIO_MAX 3	806	#define PRIO_MAX 3
…		…
844	#define PRIO_IDLE -3	810	#define PRIO_IDLE -3
845	#define PRIO_MIN -4	811	#define PRIO_MIN -4
846		812
847	/* for Coro.pm */	813	/* for Coro.pm */
848	static GV coro_current, coro_idle;	814	static GV coro_current, coro_idle;
849	static AV *coro_ready[PRIO_MAX-PRIO_MIN+1];	815	static AV *coro_ready [PRIO_MAX-PRIO_MIN+1];
850	static int coro_nready;	816	static int coro_nready;
851		817
852	static void	818	static void
853	coro_enq (pTHX_ SV *sv)	819	coro_enq (pTHX_ SV *sv)
854	{	820	{
		821	int prio;
		822
855	if (SvTYPE (sv) == SVt_PVHV)	823	if (SvTYPE (sv) != SVt_PVHV)
856	{
857	SV *xprio = hv_fetch ((HV )sv, "prio", 4, 0);
858	int prio = xprio ? SvIV (*xprio) : PRIO_NORMAL;
859
860	prio = prio > PRIO_MAX ? PRIO_MAX
861	: prio < PRIO_MIN ? PRIO_MIN
862	: prio;
863
864	av_push (coro_ready [prio - PRIO_MIN], sv);
865	coro_nready++;
866
867	return;
868	}
869
870	croak ("Coro::ready tried to enqueue something that is not a coroutine");	824	croak ("Coro::ready tried to enqueue something that is not a coroutine");
		825
		826	prio = SvSTATE (sv)->prio;
		827
		828	av_push (coro_ready [prio - PRIO_MIN], sv);
		829	coro_nready++;
871	}	830	}
872		831
873	static SV *	832	static SV *
874	coro_deq (pTHX_ int min_prio)	833	coro_deq (pTHX_ int min_prio)
875	{	834	{
…		…
878	min_prio -= PRIO_MIN;	837	min_prio -= PRIO_MIN;
879	if (min_prio < 0)	838	if (min_prio < 0)
880	min_prio = 0;	839	min_prio = 0;
881		840
882	for (prio = PRIO_MAX - PRIO_MIN + 1; --prio >= min_prio; )	841	for (prio = PRIO_MAX - PRIO_MIN + 1; --prio >= min_prio; )
883	if (av_len (coro_ready[prio]) >= 0)	842	if (AvFILLp (coro_ready [prio]) >= 0)
884	{	843	{
885	coro_nready--;	844	coro_nready--;
886	return av_shift (coro_ready[prio]);	845	return av_shift (coro_ready [prio]);
887	}	846	}
888		847
889	return 0;	848	return 0;
890	}	849	}
891		850
…		…
906	api_schedule (void)	865	api_schedule (void)
907	{	866	{
908	dTHX;	867	dTHX;
909		868
910	SV prev, next;	869	SV prev, next;
		870	SV *current = GvSV (coro_current);
911		871
		872	for (;;)
		873	{
912	LOCK;	874	LOCK;
913		875
914	prev = SvRV (GvSV (coro_current));
915	next = coro_deq (aTHX_ PRIO_MIN);	876	next = coro_deq (aTHX_ PRIO_MIN);
916		877
917	if (!next)	878	if (next)
918	next = SvREFCNT_inc (SvRV (GvSV (coro_idle)));	879	break;
		880
		881	UNLOCK;
		882
		883	{
		884	dSP;
		885
		886	ENTER;
		887	SAVETMPS;
		888
		889	PUSHMARK (SP);
		890	PUTBACK;
		891	call_sv (GvSV (coro_idle), G_DISCARD);
		892
		893	FREETMPS;
		894	LEAVE;
		895	}
		896	}
		897
		898	prev = SvRV (current);
		899	SvRV (current) = next;
919		900
920	/* free this only after the transfer */	901	/* free this only after the transfer */
921	coro_mortal = prev;	902	coro_mortal = prev;
922	SV_CORO (prev, "Coro::schedule");
923
924	SvRV (GvSV (coro_current)) = next;
925
926	SV_CORO (next, "Coro::schedule");
927		903
928	UNLOCK;	904	UNLOCK;
929		905
930	transfer (aTHX_ SvSTATE (prev), SvSTATE (next),	906	coro_state_transfer (aTHX_ SvSTATE (prev), SvSTATE (next), TRANSFER_SAVE_ALL);
931	TRANSFER_SAVE_ALL \| TRANSFER_LAZY_STACK);
932	}	907	}
		908
		909	static int coro_cede_self;
933		910
934	static void	911	static void
935	api_cede (void)	912	api_cede (void)
936	{	913	{
937	dTHX;	914	dTHX;
		915	SV *current = SvREFCNT_inc (SvRV (GvSV (coro_current)));
938		916
939	LOCK;	917	LOCK;
940	coro_enq (aTHX_ SvREFCNT_inc (SvRV (GvSV (coro_current))));	918
		919	if (coro_cede_self)
		920	{
		921	AV *runqueue = coro_ready [PRIO_MAX - PRIO_MIN];
		922	av_unshift (runqueue, 1);
		923	av_store (runqueue, 0, current);
		924	coro_nready++;
		925	coro_cede_self = 0;
		926	}
		927	else
		928	coro_enq (aTHX_ current);
		929
941	UNLOCK;	930	UNLOCK;
942		931
943	api_schedule ();	932	api_schedule ();
944	}	933	}
945		934
946	MODULE = Coro::State PACKAGE = Coro::State	935	MODULE = Coro::State PACKAGE = Coro::State
947		936
948	PROTOTYPES: ENABLE	937	PROTOTYPES: DISABLE
949		938
950	BOOT:	939	BOOT:
951	{ /* {} necessary for stoopid perl-5.6.x */	940	{
952	#ifdef USE_ITHREADS	941	#ifdef USE_ITHREADS
953	MUTEX_INIT (&coro_mutex);	942	MUTEX_INIT (&coro_mutex);
954	#endif	943	#endif
		944	BOOT_PAGESIZE;
955		945
956	ucoro_state_sv = newSVpv (UCORO_STATE, sizeof(UCORO_STATE) - 1);
957	PERL_HASH(ucoro_state_hash, UCORO_STATE, sizeof(UCORO_STATE) - 1);
958	coro_state_stash = gv_stashpv ("Coro::State", TRUE);	946	coro_state_stash = gv_stashpv ("Coro::State", TRUE);
959		947
960	newCONSTSUB (coro_state_stash, "SAVE_DEFAV", newSViv (TRANSFER_SAVE_DEFAV));	948	newCONSTSUB (coro_state_stash, "SAVE_DEFAV", newSViv (TRANSFER_SAVE_DEFAV));
961	newCONSTSUB (coro_state_stash, "SAVE_DEFSV", newSViv (TRANSFER_SAVE_DEFSV));	949	newCONSTSUB (coro_state_stash, "SAVE_DEFSV", newSViv (TRANSFER_SAVE_DEFSV));
962	newCONSTSUB (coro_state_stash, "SAVE_ERRSV", newSViv (TRANSFER_SAVE_ERRSV));	950	newCONSTSUB (coro_state_stash, "SAVE_ERRSV", newSViv (TRANSFER_SAVE_ERRSV));
963	newCONSTSUB (coro_state_stash, "SAVE_CCTXT", newSViv (TRANSFER_SAVE_CCTXT));
964		951
965	main_mainstack = PL_mainstack;	952	main_mainstack = PL_mainstack;
966		953
967	coroapi.ver = CORO_API_VERSION;	954	coroapi.ver = CORO_API_VERSION;
968	coroapi.transfer = api_transfer;	955	coroapi.transfer = api_transfer;
969	}
970		956
971	Coro::State	957	Newz (0, main_stack, 1, coro_stack);
972	_newprocess(args)	958	main_stack->idle_sp = (void *)-1;
973	SV * args	959
974	PROTOTYPE: $	960	assert (("PRIO_NORMAL must be 0", !PRIO_NORMAL));
		961	}
		962
		963	SV *
		964	new (char *klass, ...)
975	CODE:	965	CODE:
976	Coro__State coro;	966	{
		967	struct coro *coro;
		968	HV *hv;
		969	int i;
977		970
978	if (!SvROK (args) \|\| SvTYPE (SvRV (args)) != SVt_PVAV)
979	croak ("Coro::State::_newprocess expects an arrayref");
980
981	Newz (0, coro, 1, struct coro);	971	Newz (0, coro, 1, struct coro);
		972	coro->args = newAV ();
982		973
983	coro->args = (AV *)SvREFCNT_inc (SvRV (args));	974	hv = newHV ();
		975	sv_magicext ((SV )hv, 0, PERL_MAGIC_ext, &coro_state_vtbl, (char )coro, 0)->mg_flags \|= MGf_DUP;
		976	RETVAL = sv_bless (newRV_noinc ((SV *)hv), gv_stashpv (klass, 1));
		977
		978	av_push (coro->args, newSVsv (RETVAL));
		979	for (i = 1; i < items; i++)
		980	av_push (coro->args, newSVsv (ST (i)));
		981
		982	coro->stack = main_stack;
984	/coro->mainstack = 0; //actual work is done inside transfer /	983	/coro->mainstack = 0; //actual work is done inside transfer /
985	/coro->stack = 0;/	984	/coro->stack = 0;/
986		985	}
987	/* same as JMPENV_BOOTSTRAP */
988	/* we might be able to recycle start_env, but safe is safe */
989	/Zero(&coro->start_env, 1, JMPENV);/
990	coro->start_env.je_ret = -1;
991	coro->start_env.je_mustcatch = TRUE;
992
993	RETVAL = coro;
994	OUTPUT:	986	OUTPUT:
995	RETVAL	987	RETVAL
996		988
997	void	989	void
998	transfer(prev, next, flags)	990	transfer (prev, next, flags)
999	SV *prev	991	SV *prev
1000	SV *next	992	SV *next
1001	int flags	993	int flags
1002	PROTOTYPE: @
1003	CODE:	994	CODE:
1004	PUTBACK;	995	PUTBACK;
1005	SV_CORO (next, "Coro::transfer");
1006	SV_CORO (prev, "Coro::transfer");
1007	transfer (aTHX_ SvSTATE (prev), SvSTATE (next), flags);	996	coro_state_transfer (aTHX_ SvSTATE (prev), SvSTATE (next), flags);
1008	SPAGAIN;	997	SPAGAIN;
1009		998
		999	int
		1000	prio (Coro::State coro, int newprio = 0)
		1001	ALIAS:
		1002	nice = 1
		1003	CODE:
		1004	{
		1005	RETVAL = coro->prio;
		1006
		1007	if (items > 1)
		1008	{
		1009	if (ix)
		1010	newprio += coro->prio;
		1011
		1012	if (newprio < PRIO_MIN) newprio = PRIO_MIN;
		1013	if (newprio > PRIO_MAX) newprio = PRIO_MAX;
		1014
		1015	coro->prio = newprio;
		1016	}
		1017	}
		1018
1010	void	1019	void
1011	DESTROY(coro)	1020	_clear_idle_sp (Coro::State self)
1012	Coro::State coro	1021	CODE:
1013	CODE:	1022	self->stack->idle_sp = 0;
1014
1015	if (coro->mainstack && coro->mainstack != main_mainstack)
1016	{
1017	struct coro temp;
1018
1019	PUTBACK;
1020	SAVE(aTHX_ (&temp), TRANSFER_SAVE_ALL);
1021	LOAD(aTHX_ coro);
1022	SPAGAIN;
1023
1024	destroy_stacks (aTHX);
1025
1026	LOAD((&temp)); /* this will get rid of defsv etc.. */
1027	SPAGAIN;
1028
1029	coro->mainstack = 0;
1030	}
1031
1032	deallocate_stack (coro);
1033	SvREFCNT_dec (coro->args);
1034	Safefree (coro);
1035		1023
1036	void	1024	void
		1025	_clone_state_from (SV dst, SV src)
		1026	CODE:
		1027	{
		1028	struct coro *coro_src = SvSTATE (src);
		1029
		1030	sv_unmagic (SvRV (dst), PERL_MAGIC_ext);
		1031
		1032	++coro_src->refcnt;
		1033	sv_magicext (SvRV (dst), 0, PERL_MAGIC_ext, &coro_state_vtbl, (char *)coro_src, 0)->mg_flags \|= MGf_DUP;
		1034	}
		1035
		1036	void
1037	_exit(code)	1037	_exit (code)
1038	int code	1038	int code
1039	PROTOTYPE: $	1039	PROTOTYPE: $
1040	CODE:	1040	CODE:
1041	_exit (code);	1041	_exit (code);
1042		1042
1043	MODULE = Coro::State PACKAGE = Coro::Cont	1043	MODULE = Coro::State PACKAGE = Coro::Cont
1044		1044
1045	# this is slightly dirty (should expose a c-level api)
1046
1047	void	1045	void
1048	yield(...)	1046	yield (...)
1049	PROTOTYPE: @	1047	PROTOTYPE: @
1050	CODE:	1048	CODE:
1051	static SV *returnstk;	1049	{
		1050	SV *yieldstack;
1052	SV *sv;	1051	SV *sv;
1053	AV *defav = GvAV (PL_defgv);	1052	AV *defav = GvAV (PL_defgv);
1054	struct coro prev, next;	1053	struct coro prev, next;
1055		1054
1056	if (!returnstk)	1055	yieldstack = *hv_fetch (
1057	returnstk = SvRV ((SV *)get_sv ("Coro::Cont::return", FALSE));	1056	(HV *)SvRV (GvSV (coro_current)),
		1057	"yieldstack", sizeof ("yieldstack") - 1,
		1058	0
		1059	);
1058		1060
1059	/* set up @_ -- ugly */	1061	/* set up @_ -- ugly */
1060	av_clear (defav);	1062	av_clear (defav);
1061	av_fill (defav, items - 1);	1063	av_fill (defav, items - 1);
1062	while (items--)	1064	while (items--)
1063	av_store (defav, items, SvREFCNT_inc (ST(items)));	1065	av_store (defav, items, SvREFCNT_inc (ST(items)));
1064		1066
1065	mg_get (returnstk); /* isn't documentation wrong for mg_get? */
1066	sv = av_pop ((AV *)SvRV (returnstk));	1067	sv = av_pop ((AV *)SvRV (yieldstack));
1067	prev = (struct coro )SvIV ((SV)SvRV (av_fetch ((AV )SvRV (sv), 0, 0)));	1068	prev = SvSTATE (av_fetch ((AV )SvRV (sv), 0, 0));
1068	next = (struct coro )SvIV ((SV)SvRV (av_fetch ((AV )SvRV (sv), 1, 0)));	1069	next = SvSTATE (av_fetch ((AV )SvRV (sv), 1, 0));
1069	SvREFCNT_dec (sv);	1070	SvREFCNT_dec (sv);
1070		1071
1071	transfer(aTHX_ prev, next, 0);	1072	coro_state_transfer (aTHX_ prev, next, 0);
		1073	}
1072		1074
1073	MODULE = Coro::State PACKAGE = Coro	1075	MODULE = Coro::State PACKAGE = Coro
1074		1076
1075	# this is slightly dirty (should expose a c-level api)
1076
1077	BOOT:	1077	BOOT:
1078	{	1078	{
1079	int i;	1079	int i;
		1080
1080	HV *stash = gv_stashpv ("Coro", TRUE);	1081	coro_stash = gv_stashpv ("Coro", TRUE);
1081		1082
1082	newCONSTSUB (stash, "PRIO_MAX", newSViv (PRIO_MAX));	1083	newCONSTSUB (coro_stash, "PRIO_MAX", newSViv (PRIO_MAX));
1083	newCONSTSUB (stash, "PRIO_HIGH", newSViv (PRIO_HIGH));	1084	newCONSTSUB (coro_stash, "PRIO_HIGH", newSViv (PRIO_HIGH));
1084	newCONSTSUB (stash, "PRIO_NORMAL", newSViv (PRIO_NORMAL));	1085	newCONSTSUB (coro_stash, "PRIO_NORMAL", newSViv (PRIO_NORMAL));
1085	newCONSTSUB (stash, "PRIO_LOW", newSViv (PRIO_LOW));	1086	newCONSTSUB (coro_stash, "PRIO_LOW", newSViv (PRIO_LOW));
1086	newCONSTSUB (stash, "PRIO_IDLE", newSViv (PRIO_IDLE));	1087	newCONSTSUB (coro_stash, "PRIO_IDLE", newSViv (PRIO_IDLE));
1087	newCONSTSUB (stash, "PRIO_MIN", newSViv (PRIO_MIN));	1088	newCONSTSUB (coro_stash, "PRIO_MIN", newSViv (PRIO_MIN));
1088		1089
1089	coro_current = gv_fetchpv ("Coro::current", TRUE, SVt_PV);	1090	coro_current = gv_fetchpv ("Coro::current", TRUE, SVt_PV);
1090	coro_idle = gv_fetchpv ("Coro::idle" , TRUE, SVt_PV);	1091	coro_idle = gv_fetchpv ("Coro::idle" , TRUE, SVt_PV);
1091		1092
1092	for (i = PRIO_MAX - PRIO_MIN + 1; i--; )	1093	for (i = PRIO_MAX - PRIO_MIN + 1; i--; )
…		…
1100	coroapi.ready = api_ready;	1101	coroapi.ready = api_ready;
1101	coroapi.nready = &coro_nready;	1102	coroapi.nready = &coro_nready;
1102	coroapi.current = coro_current;	1103	coroapi.current = coro_current;
1103		1104
1104	GCoroAPI = &coroapi;	1105	GCoroAPI = &coroapi;
1105	sv_setiv(sv, (IV)&coroapi);	1106	sv_setiv (sv, (IV)&coroapi);
1106	SvREADONLY_on(sv);	1107	SvREADONLY_on (sv);
1107	}	1108	}
1108	}	1109	}
1109		1110
1110	#if !PERL_MICRO
1111
1112	void	1111	void
1113	ready(self)	1112	ready (SV *self)
1114	SV * self
1115	PROTOTYPE: $	1113	PROTOTYPE: $
1116	CODE:	1114	CODE:
1117	api_ready (self);	1115	api_ready (self);
1118		1116
1119	#endif
1120
1121	int	1117	int
1122	nready(...)	1118	nready (...)
1123	PROTOTYPE:	1119	PROTOTYPE:
1124	CODE:	1120	CODE:
1125	RETVAL = coro_nready;	1121	RETVAL = coro_nready;
1126	OUTPUT:	1122	OUTPUT:
1127	RETVAL	1123	RETVAL
1128		1124
1129	void	1125	void
1130	schedule(...)	1126	schedule (...)
1131	PROTOTYPE:	1127	PROTOTYPE:
1132	CODE:	1128	CODE:
1133	api_schedule ();	1129	api_schedule ();
1134		1130
1135	void	1131	void
		1132	_set_cede_self ()
		1133	CODE:
		1134	coro_cede_self = 1;
		1135
		1136	void
1136	cede(...)	1137	cede (...)
1137	PROTOTYPE:	1138	PROTOTYPE:
1138	CODE:	1139	CODE:
1139	api_cede ();	1140	api_cede ();
1140		1141
		1142	MODULE = Coro::State PACKAGE = Coro::AIO
		1143
		1144	SV *
		1145	_get_state ()
		1146	CODE:
		1147	{
		1148	struct {
		1149	int errorno;
		1150	int laststype;
		1151	int laststatval;
		1152	Stat_t statcache;
		1153	} data;
		1154
		1155	data.errorno = errno;
		1156	data.laststype = PL_laststype;
		1157	data.laststatval = PL_laststatval;
		1158	data.statcache = PL_statcache;
		1159
		1160	RETVAL = newSVpvn ((char *)&data, sizeof data);
		1161	}
		1162	OUTPUT:
		1163	RETVAL
		1164
		1165	void
		1166	_set_state (char *data_)
		1167	PROTOTYPE: $
		1168	CODE:
		1169	{
		1170	struct {
		1171	int errorno;
		1172	int laststype;
		1173	int laststatval;
		1174	Stat_t statcache;
		1175	} data = (void )data_;
		1176
		1177	errno = data->errorno;
		1178	PL_laststype = data->laststype;
		1179	PL_laststatval = data->laststatval;
		1180	PL_statcache = data->statcache;
		1181	}

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Comparing Coro/Coro/State.xs (file contents): Revision 1.59 by root, Mon Jul 19 01:32:27 2004 UTC vs. Revision 1.90 by root, Sat Nov 25 00:56:35 2006 UTC

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Comparing Coro/Coro/State.xs (file contents):
Revision 1.59 by root, Mon Jul 19 01:32:27 2004 UTC vs.
Revision 1.90 by root, Sat Nov 25 00:56:35 2006 UTC