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

Comparing Coro/Coro/State.xs (file contents):
Revision 1.93 by root, Sun Nov 26 03:22:50 2006 UTC vs.
Revision 1.110 by root, Tue Nov 28 23:08:07 2006 UTC

…		…
1	#define PERL_NO_GET_CONTEXT
2
3	#include "libcoro/coro.c"	1	#include "libcoro/coro.c"
4		2
5	#include "EXTERN.h"	3	#include "EXTERN.h"
6	#include "perl.h"	4	#include "perl.h"
7	#include "XSUB.h"	5	#include "XSUB.h"
8		6
9	#include "patchlevel.h"	7	#include "patchlevel.h"
10		8
11	#if PERL_VERSION < 6	9	#if USE_VALGRIND
		10	# include <valgrind/valgrind.h>
		11	#endif
		12
		13	#define PERL_VERSION_ATLEAST(a,b,c) \
		14	(PERL_REVISION > (a) \
		15	\|\| (PERL_REVISION == (a) \
		16	&& (PERL_VERSION > (b) \
		17	\|\| (PERL_VERSION == (b) && PERLSUBVERSION >= (c)))))
		18
		19	#if !PERL_VERSION_ATLEAST (5,6,0)
12	# ifndef PL_ppaddr	20	# ifndef PL_ppaddr
13	# define PL_ppaddr ppaddr	21	# define PL_ppaddr ppaddr
14	# endif	22	# endif
15	# ifndef call_sv	23	# ifndef call_sv
16	# define call_sv perl_call_sv	24	# define call_sv perl_call_sv
54	# ifndef PAGESIZE	62	# ifndef PAGESIZE
55	# define PAGESIZE pagesize	63	# define PAGESIZE pagesize
56	# define BOOT_PAGESIZE pagesize = sysconf (_SC_PAGESIZE)	64	# define BOOT_PAGESIZE pagesize = sysconf (_SC_PAGESIZE)
57	static long pagesize;	65	static long pagesize;
58	# else	66	# else
59	# define BOOT_PAGESIZE	67	# define BOOT_PAGESIZE (void)0
60	# endif	68	# endif
		69	#else
		70	# define PAGESIZE 0
		71	# define BOOT_PAGESIZE (void)0
61	#endif	72	#endif
62		73
63	/* The next macro should declare a variable stacklevel that contains and approximation	74	/* The next macro should declare a variable stacklevel that contains and approximation
64	* to the current C stack pointer. Its property is that it changes with each call	75	* to the current C stack pointer. Its property is that it changes with each call
65	* and should be unique. */	76	* and should be unique. */
66	#define dSTACKLEVEL int stacklevel	77	#define dSTACKLEVEL int stacklevel
67	#define STACKLEVEL ((void *)&stacklevel)	78	#define STACKLEVEL ((void *)&stacklevel)
68		79
69	#define IN_DESTRUCT (PL_main_cv == Nullcv)	80	#define IN_DESTRUCT (PL_main_cv == Nullcv)
70		81
71	#define labs(l) ((l) >= 0 ? (l) : -(l))	82	#if __GNUC__ >= 3
		83	# define attribute(x) __attribute__(x)
		84	#else
		85	# define attribute(x)
		86	#endif
		87
		88	#define NOINLINE attribute ((noinline))
72		89
73	#include "CoroAPI.h"	90	#include "CoroAPI.h"
74		91
75	#define TRANSFER_SET_STACKLEVEL 0x8bfbfbfb /* magic cookie */	92	#define TRANSFER_SET_STACKLEVEL 0x8bfbfbfb /* magic cookie */
76		93
…		…
86	static struct CoroAPI coroapi;	103	static struct CoroAPI coroapi;
87	static AV main_mainstack; / used to differentiate between $main and others */	104	static AV main_mainstack; / used to differentiate between $main and others */
88	static HV coro_state_stash, coro_stash;	105	static HV coro_state_stash, coro_stash;
89	static SV coro_mortal; / will be freed after next transfer */	106	static SV coro_mortal; / will be freed after next transfer */
90		107
		108	static struct coro_cctx *cctx_first;
		109	static int cctx_count, cctx_idle;
		110
91	/* this is a structure representing a c-level coroutine */	111	/* this is a structure representing a c-level coroutine */
92	typedef struct coro_stack {	112	typedef struct coro_cctx {
93	struct coro_stack *next;	113	struct coro_cctx *next;
94		114
95	/* the stack */	115	/* the stack */
96	void *sptr;	116	void *sptr;
97	long ssize; /* positive == mmap, otherwise malloc */	117	long ssize; /* positive == mmap, otherwise malloc */
98		118
99	/* cpu state */	119	/* cpu state */
100	void idle_sp; / original stacklevel when coroutine was created */	120	void idle_sp; / sp of top-level transfer/schedule/cede call */
101	JMPENV *top_env;	121	JMPENV *top_env;
102	coro_context cctx;	122	coro_context cctx;
103	} coro_stack;
104		123
105	/* the (fake) coro_stack representing the main program */	124	#if USE_VALGRIND
106	static coro_stack *main_stack;	125	int valgrind_id;
		126	#endif
		127	} coro_cctx;
107		128
108	/* this is a structure representing a perl-level coroutine */	129	/* this is a structure representing a perl-level coroutine */
109	struct coro {	130	struct coro {
110	/* the c coroutine allocated to this perl coroutine, if any */	131	/* the c coroutine allocated to this perl coroutine, if any */
111	coro_stack *stack;	132	coro_cctx *cctx;
112		133
113	/* data associated with this coroutine (initial args) */	134	/* data associated with this coroutine (initial args) */
114	AV *args;	135	AV *args;
115	int refcnt;	136	int refcnt;
116		137
117	/* optionally saved, might be zero */	138	/* optionally saved, might be zero */
118	AV *defav;	139	AV *defav;
119	SV *defsv;	140	SV *defsv;
120	SV *errsv;	141	SV *errsv;
121		142
122	/* saved global state not related to stacks */	143	#define VAR(name,type) type name;
123	U8 dowarn;	144	# include "state.h"
124	I32 in_eval;	145	#undef VAR
125
126	/* the stacks and related info (callchain etc..) */
127	PERL_SI *curstackinfo;
128	AV *curstack;
129	AV *mainstack;
130	SV **stack_sp;
131	OP *op;
132	SV **curpad;
133	AV *comppad;
134	CV *compcv;
135	SV **stack_base;
136	SV **stack_max;
137	SV **tmps_stack;
138	I32 tmps_floor;
139	I32 tmps_ix;
140	I32 tmps_max;
141	I32 *markstack;
142	I32 *markstack_ptr;
143	I32 *markstack_max;
144	I32 *scopestack;
145	I32 scopestack_ix;
146	I32 scopestack_max;
147	ANY *savestack;
148	I32 savestack_ix;
149	I32 savestack_max;
150	OP **retstack;
151	I32 retstack_ix;
152	I32 retstack_max;
153	PMOP *curpm;
154	COP *curcop;
155		146
156	/* coro process data */	147	/* coro process data */
157	int prio;	148	int prio;
158	};	149	};
159		150
160	typedef struct coro *Coro__State;	151	typedef struct coro *Coro__State;
161	typedef struct coro *Coro__State_or_hashref;	152	typedef struct coro *Coro__State_or_hashref;
162		153
163	static AV *	154	static AV *
164	coro_clone_padlist (pTHX_ CV *cv)	155	coro_clone_padlist (CV *cv)
165	{	156	{
166	AV *padlist = CvPADLIST (cv);	157	AV *padlist = CvPADLIST (cv);
167	AV newpadlist, newpad;	158	AV newpadlist, newpad;
168		159
169	newpadlist = newAV ();	160	newpadlist = newAV ();
170	AvREAL_off (newpadlist);	161	AvREAL_off (newpadlist);
171	#if PERL_VERSION < 9	162	#if PERL_VERSION_ATLEAST (5,9,0)
		163	Perl_pad_push (aTHX_ padlist, AvFILLp (padlist) + 1);
		164	#else
172	Perl_pad_push (aTHX_ padlist, AvFILLp (padlist) + 1, 1);	165	Perl_pad_push (aTHX_ padlist, AvFILLp (padlist) + 1, 1);
173	#else
174	Perl_pad_push (aTHX_ padlist, AvFILLp (padlist) + 1);
175	#endif	166	#endif
176	newpad = (AV *)AvARRAY (padlist)[AvFILLp (padlist)];	167	newpad = (AV *)AvARRAY (padlist)[AvFILLp (padlist)];
177	--AvFILLp (padlist);	168	--AvFILLp (padlist);
178		169
179	av_store (newpadlist, 0, SvREFCNT_inc (*av_fetch (padlist, 0, FALSE)));	170	av_store (newpadlist, 0, SvREFCNT_inc (*av_fetch (padlist, 0, FALSE)));
…		…
181		172
182	return newpadlist;	173	return newpadlist;
183	}	174	}
184		175
185	static void	176	static void
186	free_padlist (pTHX_ AV *padlist)	177	free_padlist (AV *padlist)
187	{	178	{
188	/* may be during global destruction */	179	/* may be during global destruction */
189	if (SvREFCNT (padlist))	180	if (SvREFCNT (padlist))
190	{	181	{
191	I32 i = AvFILLp (padlist);	182	I32 i = AvFILLp (padlist);
…		…
212	AV *padlist;	203	AV *padlist;
213	AV av = (AV )mg->mg_obj;	204	AV av = (AV )mg->mg_obj;
214		205
215	/* casting is fun. */	206	/* casting is fun. */
216	while (&PL_sv_undef != (SV )(padlist = (AV )av_pop (av)))	207	while (&PL_sv_undef != (SV )(padlist = (AV )av_pop (av)))
217	free_padlist (aTHX_ padlist);	208	free_padlist (padlist);
218		209
219	SvREFCNT_dec (av);	210	SvREFCNT_dec (av);
220		211
221	return 0;	212	return 0;
222	}	213	}
223		214
224	#define PERL_MAGIC_coro PERL_MAGIC_ext	215	#define PERL_MAGIC_coro PERL_MAGIC_ext
225		216
226	static MGVTBL vtbl_coro = {0, 0, 0, 0, coro_cv_free};	217	static MGVTBL vtbl_coro = {0, 0, 0, 0, coro_cv_free};
227		218
		219	#define CORO_MAGIC(cv) \
		220	SvMAGIC (cv) \
		221	? SvMAGIC (cv)->mg_type == PERL_MAGIC_coro \
		222	? SvMAGIC (cv) \
		223	: mg_find ((SV *)cv, PERL_MAGIC_coro) \
		224	: 0
		225
228	/* the next two functions merely cache the padlists */	226	/* the next two functions merely cache the padlists */
229	static void	227	static void
230	get_padlist (pTHX_ CV *cv)	228	get_padlist (CV *cv)
231	{	229	{
232	MAGIC mg = mg_find ((SV )cv, PERL_MAGIC_coro);	230	MAGIC *mg = CORO_MAGIC (cv);
		231	AV *av;
233		232
234	if (mg && AvFILLp ((AV *)mg->mg_obj) >= 0)	233	if (mg && AvFILLp ((av = (AV *)mg->mg_obj)) >= 0)
235	CvPADLIST (cv) = (AV )av_pop ((AV )mg->mg_obj);	234	CvPADLIST (cv) = (AV *)AvARRAY (av)[AvFILLp (av)--];
236	else	235	else
237	{	236	{
238	#if 0	237	#if 0
239	/* this should work - but it doesn't :( */	238	/* this is probably cleaner, but also slower? */
240	CV *cp = Perl_cv_clone (aTHX_ cv);	239	CV *cp = Perl_cv_clone (cv);
241	CvPADLIST (cv) = CvPADLIST (cp);	240	CvPADLIST (cv) = CvPADLIST (cp);
242	CvPADLIST (cp) = 0;	241	CvPADLIST (cp) = 0;
243	SvREFCNT_dec (cp);	242	SvREFCNT_dec (cp);
244	#else	243	#else
245	CvPADLIST (cv) = coro_clone_padlist (aTHX_ cv);	244	CvPADLIST (cv) = coro_clone_padlist (cv);
246	#endif	245	#endif
247	}	246	}
248	}	247	}
249		248
250	static void	249	static void
251	put_padlist (pTHX_ CV *cv)	250	put_padlist (CV *cv)
252	{	251	{
253	MAGIC mg = mg_find ((SV )cv, PERL_MAGIC_coro);	252	MAGIC *mg = CORO_MAGIC (cv);
		253	AV *av;
254		254
255	if (!mg)	255	if (!mg)
256	{	256	{
257	sv_magic ((SV *)cv, 0, PERL_MAGIC_coro, 0, 0);	257	sv_magic ((SV *)cv, 0, PERL_MAGIC_coro, 0, 0);
258	mg = mg_find ((SV *)cv, PERL_MAGIC_coro);	258	mg = mg_find ((SV *)cv, PERL_MAGIC_coro);
259	mg->mg_virtual = &vtbl_coro;	259	mg->mg_virtual = &vtbl_coro;
260	mg->mg_obj = (SV *)newAV ();	260	mg->mg_obj = (SV *)newAV ();
261	}	261	}
262		262
263	av_push ((AV )mg->mg_obj, (SV )CvPADLIST (cv));	263	av = (AV *)mg->mg_obj;
		264
		265	if (AvFILLp (av) >= AvMAX (av))
		266	av_extend (av, AvMAX (av) + 1);
		267
		268	AvARRAY (av)[++AvFILLp (av)] = (SV *)CvPADLIST (cv);
264	}	269	}
265		270
266	#define SB do {	271	#define SB do {
267	#define SE } while (0)	272	#define SE } while (0)
268		273
269	#define LOAD(state) load_state(aTHX_ (state));	274	#define LOAD(state) load_state((state));
270	#define SAVE(state,flags) save_state(aTHX_ (state),(flags));	275	#define SAVE(state,flags) save_state((state),(flags));
271		276
272	#define REPLACE_SV(sv,val) SB SvREFCNT_dec(sv); (sv) = (val); (val) = 0; SE	277	#define REPLACE_SV(sv,val) SB SvREFCNT_dec(sv); (sv) = (val); (val) = 0; SE
273		278
274	static void	279	static void
275	load_state(pTHX_ Coro__State c)	280	load_state(Coro__State c)
276	{	281	{
277	PL_dowarn = c->dowarn;	282	#define VAR(name,type) PL_ ## name = c->name;
278	PL_in_eval = c->in_eval;	283	# include "state.h"
279		284	#undef VAR
280	PL_curstackinfo = c->curstackinfo;
281	PL_curstack = c->curstack;
282	PL_mainstack = c->mainstack;
283	PL_stack_sp = c->stack_sp;
284	PL_op = c->op;
285	PL_curpad = c->curpad;
286	PL_comppad = c->comppad;
287	PL_compcv = c->compcv;
288	PL_stack_base = c->stack_base;
289	PL_stack_max = c->stack_max;
290	PL_tmps_stack = c->tmps_stack;
291	PL_tmps_floor = c->tmps_floor;
292	PL_tmps_ix = c->tmps_ix;
293	PL_tmps_max = c->tmps_max;
294	PL_markstack = c->markstack;
295	PL_markstack_ptr = c->markstack_ptr;
296	PL_markstack_max = c->markstack_max;
297	PL_scopestack = c->scopestack;
298	PL_scopestack_ix = c->scopestack_ix;
299	PL_scopestack_max = c->scopestack_max;
300	PL_savestack = c->savestack;
301	PL_savestack_ix = c->savestack_ix;
302	PL_savestack_max = c->savestack_max;
303	#if PERL_VERSION < 9
304	PL_retstack = c->retstack;
305	PL_retstack_ix = c->retstack_ix;
306	PL_retstack_max = c->retstack_max;
307	#endif
308	PL_curpm = c->curpm;
309	PL_curcop = c->curcop;
310		285
311	if (c->defav) REPLACE_SV (GvAV (PL_defgv), c->defav);	286	if (c->defav) REPLACE_SV (GvAV (PL_defgv), c->defav);
312	if (c->defsv) REPLACE_SV (DEFSV , c->defsv);	287	if (c->defsv) REPLACE_SV (DEFSV , c->defsv);
313	if (c->errsv) REPLACE_SV (ERRSV , c->errsv);	288	if (c->errsv) REPLACE_SV (ERRSV , c->errsv);
314		289
…		…
317	CV *cv;	292	CV *cv;
318		293
319	/* now do the ugly restore mess */	294	/* now do the ugly restore mess */
320	while ((cv = (CV *)POPs))	295	while ((cv = (CV *)POPs))
321	{	296	{
322	AV padlist = (AV )POPs;
323
324	if (padlist)
325	{
326	put_padlist (aTHX_ cv); /* mark this padlist as available */	297	put_padlist (cv); /* mark this padlist as available */
327	CvPADLIST(cv) = padlist;	298	CvDEPTH (cv) = PTR2IV (POPs);
328	}	299	CvPADLIST (cv) = (AV *)POPs;
329
330	++CvDEPTH(cv);
331	}	300	}
332		301
333	PUTBACK;	302	PUTBACK;
334	}	303	}
335	}	304	}
336		305
337	static void	306	static void
338	save_state(pTHX_ Coro__State c, int flags)	307	save_state(Coro__State c, int flags)
339	{	308	{
340	{	309	{
341	dSP;	310	dSP;
342	I32 cxix = cxstack_ix;	311	I32 cxix = cxstack_ix;
343	PERL_CONTEXT *ccstk = cxstack;	312	PERL_CONTEXT *ccstk = cxstack;
…		…
357	PERL_CONTEXT *cx = &ccstk[cxix--];	326	PERL_CONTEXT *cx = &ccstk[cxix--];
358		327
359	if (CxTYPE(cx) == CXt_SUB)	328	if (CxTYPE(cx) == CXt_SUB)
360	{	329	{
361	CV *cv = cx->blk_sub.cv;	330	CV *cv = cx->blk_sub.cv;
		331
362	if (CvDEPTH(cv))	332	if (CvDEPTH (cv))
363	{	333	{
364	EXTEND (SP, CvDEPTH(cv)*2);	334	EXTEND (SP, 3);
365
366	while (--CvDEPTH(cv))
367	{
368	/* this tells the restore code to increment CvDEPTH */
369	PUSHs (Nullsv);
370	PUSHs ((SV *)cv);
371	}
372		335
373	PUSHs ((SV *)CvPADLIST(cv));	336	PUSHs ((SV *)CvPADLIST(cv));
		337	PUSHs (INT2PTR (SV *, CvDEPTH (cv)));
374	PUSHs ((SV *)cv);	338	PUSHs ((SV *)cv);
375		339
		340	CvDEPTH (cv) = 0;
376	get_padlist (aTHX_ cv);	341	get_padlist (cv);
377	}	342	}
378	}	343	}
379	#ifdef CXt_FORMAT	344	#ifdef CXt_FORMAT
380	else if (CxTYPE(cx) == CXt_FORMAT)	345	else if (CxTYPE(cx) == CXt_FORMAT)
381	{	346	{
…		…
399		364
400	c->defav = flags & TRANSFER_SAVE_DEFAV ? (AV *)SvREFCNT_inc (GvAV (PL_defgv)) : 0;	365	c->defav = flags & TRANSFER_SAVE_DEFAV ? (AV *)SvREFCNT_inc (GvAV (PL_defgv)) : 0;
401	c->defsv = flags & TRANSFER_SAVE_DEFSV ? SvREFCNT_inc (DEFSV) : 0;	366	c->defsv = flags & TRANSFER_SAVE_DEFSV ? SvREFCNT_inc (DEFSV) : 0;
402	c->errsv = flags & TRANSFER_SAVE_ERRSV ? SvREFCNT_inc (ERRSV) : 0;	367	c->errsv = flags & TRANSFER_SAVE_ERRSV ? SvREFCNT_inc (ERRSV) : 0;
403		368
404	c->dowarn = PL_dowarn;	369	#define VAR(name,type)c->name = PL_ ## name;
405	c->in_eval = PL_in_eval;	370	# include "state.h"
406		371	#undef VAR
407	c->curstackinfo = PL_curstackinfo;
408	c->curstack = PL_curstack;
409	c->mainstack = PL_mainstack;
410	c->stack_sp = PL_stack_sp;
411	c->op = PL_op;
412	c->curpad = PL_curpad;
413	c->comppad = PL_comppad;
414	c->compcv = PL_compcv;
415	c->stack_base = PL_stack_base;
416	c->stack_max = PL_stack_max;
417	c->tmps_stack = PL_tmps_stack;
418	c->tmps_floor = PL_tmps_floor;
419	c->tmps_ix = PL_tmps_ix;
420	c->tmps_max = PL_tmps_max;
421	c->markstack = PL_markstack;
422	c->markstack_ptr = PL_markstack_ptr;
423	c->markstack_max = PL_markstack_max;
424	c->scopestack = PL_scopestack;
425	c->scopestack_ix = PL_scopestack_ix;
426	c->scopestack_max = PL_scopestack_max;
427	c->savestack = PL_savestack;
428	c->savestack_ix = PL_savestack_ix;
429	c->savestack_max = PL_savestack_max;
430	#if PERL_VERSION < 9
431	c->retstack = PL_retstack;
432	c->retstack_ix = PL_retstack_ix;
433	c->retstack_max = PL_retstack_max;
434	#endif
435	c->curpm = PL_curpm;
436	c->curcop = PL_curcop;
437	}	372	}
438		373
439	/*	374	/*
440	* allocate various perl stacks. This is an exact copy	375	* allocate various perl stacks. This is an exact copy
441	* of perl.c:init_stacks, except that it uses less memory	376	* of perl.c:init_stacks, except that it uses less memory
442	* on the (sometimes correct) assumption that coroutines do	377	* on the (sometimes correct) assumption that coroutines do
443	* not usually need a lot of stackspace.	378	* not usually need a lot of stackspace.
444	*/	379	*/
445	static void	380	static void
446	coro_init_stacks (pTHX)	381	coro_init_stacks ()
447	{	382	{
448	LOCK;
449
450	PL_curstackinfo = new_stackinfo(96, 1024/sizeof(PERL_CONTEXT) - 1);	383	PL_curstackinfo = new_stackinfo(96, 1024/sizeof(PERL_CONTEXT) - 1);
451	PL_curstackinfo->si_type = PERLSI_MAIN;	384	PL_curstackinfo->si_type = PERLSI_MAIN;
452	PL_curstack = PL_curstackinfo->si_stack;	385	PL_curstack = PL_curstackinfo->si_stack;
453	PL_mainstack = PL_curstack; /* remember in case we switch stacks */	386	PL_mainstack = PL_curstack; /* remember in case we switch stacks */
454		387
…		…
475		408
476	New(54,PL_savestack,96,ANY);	409	New(54,PL_savestack,96,ANY);
477	PL_savestack_ix = 0;	410	PL_savestack_ix = 0;
478	PL_savestack_max = 96;	411	PL_savestack_max = 96;
479		412
480	#if PERL_VERSION < 9	413	#if !PERL_VERSION_ATLEAST (5,9,0)
481	New(54,PL_retstack,8,OP*);	414	New(54,PL_retstack,8,OP*);
482	PL_retstack_ix = 0;	415	PL_retstack_ix = 0;
483	PL_retstack_max = 8;	416	PL_retstack_max = 8;
484	#endif	417	#endif
485
486	UNLOCK;
487	}	418	}
488		419
489	/*	420	/*
490	* destroy the stacks, the callchain etc...	421	* destroy the stacks, the callchain etc...
491	*/	422	*/
492	static void	423	static void
493	destroy_stacks(pTHX)	424	coro_destroy_stacks ()
494	{	425	{
495	if (!IN_DESTRUCT)	426	if (!IN_DESTRUCT)
496	{	427	{
497	/* is this ugly, I ask? */	428	/* is this ugly, I ask? */
498	LEAVE_SCOPE (0);	429	LEAVE_SCOPE (0);
…		…
529		460
530	Safefree (PL_tmps_stack);	461	Safefree (PL_tmps_stack);
531	Safefree (PL_markstack);	462	Safefree (PL_markstack);
532	Safefree (PL_scopestack);	463	Safefree (PL_scopestack);
533	Safefree (PL_savestack);	464	Safefree (PL_savestack);
534	#if PERL_VERSION < 9	465	#if !PERL_VERSION_ATLEAST (5,9,0)
535	Safefree (PL_retstack);	466	Safefree (PL_retstack);
536	#endif	467	#endif
537	}	468	}
538		469
539	static void	470	static void
540	setup_coro (struct coro *coro)	471	setup_coro (struct coro *coro)
541	{	472	{
542	/*	473	/*
543	* emulate part of the perl startup here.	474	* emulate part of the perl startup here.
544	*/	475	*/
545	dTHX;
546	dSP;
547	UNOP myop;
548	SV sub_init = (SV )get_cv ("Coro::State::coro_init", FALSE);
549		476
550	coro_init_stacks (aTHX);	477	coro_init_stacks ();
		478
551	/PL_curcop = 0;/	479	PL_curcop = 0;
552	/PL_in_eval = PL_in_eval;/ /* inherit */	480	PL_in_eval = 0;
		481	PL_curpm = 0;
		482
		483	{
		484	dSP;
		485	LOGOP myop;
		486
		487	/* I have no idea why this is needed, but it is */
		488	PUSHMARK (SP);
		489
553	SvREFCNT_dec (GvAV (PL_defgv));	490	SvREFCNT_dec (GvAV (PL_defgv));
554	GvAV (PL_defgv) = coro->args; coro->args = 0;	491	GvAV (PL_defgv) = coro->args; coro->args = 0;
555		492
556	SPAGAIN;
557
558	Zero (&myop, 1, UNOP);	493	Zero (&myop, 1, LOGOP);
559	myop.op_next = Nullop;	494	myop.op_next = Nullop;
560	myop.op_flags = OPf_WANT_VOID;	495	myop.op_flags = OPf_WANT_VOID;
561		496
562	PL_op = (OP *)&myop;	497	PL_op = (OP *)&myop;
563		498
564	PUSHMARK(SP);	499	PUSHMARK (SP);
565	XPUSHs (sub_init);	500	XPUSHs ((SV *)get_cv ("Coro::State::_coro_init", FALSE));
566	PUTBACK;	501	PUTBACK;
567	PL_op = PL_ppaddr[OP_ENTERSUB](aTHX);	502	PL_op = PL_ppaddr[OP_ENTERSUB](aTHX);
568	SPAGAIN;	503	SPAGAIN;
569		504
570	ENTER; /* necessary e.g. for dounwind */	505	ENTER; /* necessary e.g. for dounwind */
		506	}
571	}	507	}
572		508
573	static void	509	static void
574	free_coro_mortal ()	510	free_coro_mortal ()
575	{	511	{
…		…
578	SvREFCNT_dec (coro_mortal);	514	SvREFCNT_dec (coro_mortal);
579	coro_mortal = 0;	515	coro_mortal = 0;
580	}	516	}
581	}	517	}
582		518
		519	static void NOINLINE
		520	prepare_cctx (coro_cctx *cctx)
		521	{
		522	dSP;
		523	LOGOP myop;
		524
		525	Zero (&myop, 1, LOGOP);
		526	myop.op_next = PL_op;
		527	myop.op_flags = OPf_WANT_VOID;
		528
		529	sv_setiv (get_sv ("Coro::State::_cctx", FALSE), PTR2IV (cctx));
		530
		531	PUSHMARK (SP);
		532	XPUSHs ((SV *)get_cv ("Coro::State::_cctx_init", FALSE));
		533	PUTBACK;
		534	PL_restartop = PL_ppaddr[OP_ENTERSUB](aTHX);
		535	SPAGAIN;
		536	}
		537
583	static void	538	static void
584	coro_run (void *arg)	539	coro_run (void *arg)
585	{	540	{
		541	/* coro_run is the alternative epilogue of transfer() */
		542	UNLOCK;
		543
586	/*	544	/*
587	* this is a _very_ stripped down perl interpreter ;)	545	* this is a _very_ stripped down perl interpreter ;)
588	*/	546	*/
589	dTHX;
590
591	UNLOCK;
592
593	PL_top_env = &PL_start_env;	547	PL_top_env = &PL_start_env;
594		548
595	sv_setiv (get_sv ("Coro::State::cctx_stack", FALSE), PTR2IV ((coro_stack *)arg));	549	/* inject call to cctx_init */
596	sv_setiv (get_sv ("Coro::State::cctx_restartop", FALSE), PTR2IV (PL_op));	550	prepare_cctx ((coro_cctx *)arg);
597		551
598	/* continue at cctx_init, without entersub */
599	PL_restartop = CvSTART (get_cv ("Coro::State::cctx_init", FALSE));
600
601	/* somebody will hit me for both perl_run and PL_restart_op */	552	/* somebody will hit me for both perl_run and PL_restartop */
602	perl_run (aTHX_ PERL_GET_CONTEXT);	553	perl_run (PL_curinterp);
603		554
		555	fputs ("FATAL: C coroutine fell over the edge of the world, aborting. Did you call exit in a coroutine?\n", stderr);
604	abort ();	556	abort ();
605	}	557	}
606		558
607	static coro_stack *	559	static coro_cctx *
608	stack_new ()	560	cctx_new ()
609	{	561	{
610	coro_stack *stack;	562	coro_cctx *cctx;
611		563
		564	++cctx_count;
		565
612	New (0, stack, 1, coro_stack);	566	New (0, cctx, 1, coro_cctx);
613		567
614	#if HAVE_MMAP	568	#if HAVE_MMAP
615		569
616	stack->ssize = ((STACKSIZE * sizeof (long) + PAGESIZE - 1) / PAGESIZE + STACKGUARD) * PAGESIZE; /* mmap should do allocate-on-write for us */	570	cctx->ssize = ((STACKSIZE * sizeof (long) + PAGESIZE - 1) / PAGESIZE + STACKGUARD) * PAGESIZE;
		571	/* mmap suppsedly does allocate-on-write for us */
617	stack->sptr = mmap (0, stack->ssize, PROT_EXEC\|PROT_READ\|PROT_WRITE, MAP_PRIVATE\|MAP_ANONYMOUS, 0, 0);	572	cctx->sptr = mmap (0, cctx->ssize, PROT_EXEC\|PROT_READ\|PROT_WRITE, MAP_PRIVATE\|MAP_ANONYMOUS, 0, 0);
618		573
619	if (stack->sptr == (void *)-1)	574	if (cctx->sptr == (void *)-1)
620	{	575	{
621	perror ("FATAL: unable to mmap stack for coroutine");	576	perror ("FATAL: unable to mmap stack for coroutine");
622	_exit (EXIT_FAILURE);	577	_exit (EXIT_FAILURE);
623	}	578	}
624		579
		580	# if STACKGUARD
625	mprotect (stack->sptr, STACKGUARD * PAGESIZE, PROT_NONE);	581	mprotect (cctx->sptr, STACKGUARD * PAGESIZE, PROT_NONE);
		582	# endif
626		583
627	#else	584	#else
628		585
629	stack->ssize = STACKSIZE * (long)sizeof (long);	586	cctx->ssize = STACKSIZE * (long)sizeof (long);
630	New (0, stack->sptr, STACKSIZE, long);	587	New (0, cctx->sptr, STACKSIZE, long);
631		588
632	if (!stack->sptr)	589	if (!cctx->sptr)
633	{	590	{
634	perror (stderr, "FATAL: unable to malloc stack for coroutine");	591	perror ("FATAL: unable to malloc stack for coroutine");
635	_exit (EXIT_FAILURE);	592	_exit (EXIT_FAILURE);
636	}	593	}
637		594
638	#endif	595	#endif
639		596
		597	#if USE_VALGRIND
		598	cctx->valgrind_id = VALGRIND_STACK_REGISTER (
		599	STACKGUARD * PAGESIZE + (char *)cctx->sptr,
		600	cctx->ssize + (char *)cctx->sptr
		601	);
		602	#endif
		603
640	coro_create (&stack->cctx, coro_run, (void *)stack, stack->sptr, stack->ssize);	604	coro_create (&cctx->cctx, coro_run, (void *)cctx, cctx->sptr, cctx->ssize);
641		605
642	return stack;	606	return cctx;
643	}	607	}
644		608
645	static void	609	static void
646	stack_free (coro_stack *stack)	610	cctx_free (coro_cctx *cctx)
647	{	611	{
648	if (!stack \|\| stack == main_stack)	612	if (!cctx)
649	return;	613	return;
650		614
		615	--cctx_count;
		616
		617	#if USE_VALGRIND
		618	VALGRIND_STACK_DEREGISTER (cctx->valgrind_id);
		619	#endif
		620
651	#if HAVE_MMAP	621	#if HAVE_MMAP
652	munmap (stack->sptr, stack->ssize);	622	munmap (cctx->sptr, cctx->ssize);
653	#else	623	#else
654	Safefree (stack->sptr);	624	Safefree (cctx->sptr);
655	#endif	625	#endif
656		626
657	Safefree (stack);	627	Safefree (cctx);
658	}	628	}
659		629
660	static coro_stack *stack_first;
661
662	static coro_stack *	630	static coro_cctx *
663	stack_get ()	631	cctx_get ()
664	{	632	{
665	coro_stack *stack;	633	coro_cctx *cctx;
666		634
667	if (stack_first)	635	if (cctx_first)
668	{	636	{
669	stack = stack_first;	637	--cctx_idle;
		638	cctx = cctx_first;
670	stack_first = stack->next;	639	cctx_first = cctx->next;
671	}	640	}
672	else	641	else
673	{	642	{
674	stack = stack_new ();	643	cctx = cctx_new ();
675	PL_op = PL_op->op_next;	644	PL_op = PL_op->op_next;
676	}	645	}
677		646
678	return stack;	647	return cctx;
679	}	648	}
680		649
681	static void	650	static void
682	stack_put (coro_stack *stack)	651	cctx_put (coro_cctx *cctx)
683	{	652	{
684	stack->next = stack_first;	653	++cctx_idle;
685	stack_first = stack;	654	cctx->next = cctx_first;
		655	cctx_first = cctx;
686	}	656	}
687		657
688	/* never call directly, always through the coro_state_transfer global variable */	658	/* never call directly, always through the coro_state_transfer global variable */
689	static void	659	static void NOINLINE
690	transfer_impl (pTHX_ struct coro prev, struct coro next, int flags)	660	transfer (struct coro prev, struct coro next, int flags)
691	{	661	{
692	dSTACKLEVEL;	662	dSTACKLEVEL;
693		663
694	/* sometimes transfer is only called to set idle_sp */	664	/* sometimes transfer is only called to set idle_sp */
695	if (flags == TRANSFER_SET_STACKLEVEL)	665	if (flags == TRANSFER_SET_STACKLEVEL)
696	((coro_stack *)prev)->idle_sp = STACKLEVEL;	666	((coro_cctx *)prev)->idle_sp = STACKLEVEL;
697	else if (prev != next)	667	else if (prev != next)
698	{	668	{
699	coro_stack *prev__stack;	669	coro_cctx *prev__cctx;
700		670
701	LOCK;	671	LOCK;
702		672
703	if (next->mainstack)	673	if (next->mainstack)
704	{	674	{
…		…
712	/* first get rid of the old state */	682	/* first get rid of the old state */
713	SAVE (prev, -1);	683	SAVE (prev, -1);
714	/* setup coroutine call */	684	/* setup coroutine call */
715	setup_coro (next);	685	setup_coro (next);
716	/* need a stack */	686	/* need a stack */
717	next->stack = 0;	687	next->cctx = 0;
718	}	688	}
719		689
		690	if (!prev->cctx)
		691	/* create a new empty context */
		692	Newz (0, prev->cctx, 1, coro_cctx);
		693
720	prev__stack = prev->stack;	694	prev__cctx = prev->cctx;
721		695
722	/* possibly "free" the stack */	696	/* possibly "free" the cctx */
723	if (prev__stack->idle_sp == STACKLEVEL)	697	if (prev__cctx->idle_sp == STACKLEVEL)
724	{	698	{
		699	assert (PL_top_env == prev__cctx->top_env);//D
725	stack_put (prev__stack);	700	cctx_put (prev__cctx);
726	prev->stack = 0;	701	prev->cctx = 0;
727	}	702	}
728		703
729	if (!next->stack)	704	if (!next->cctx)
730	next->stack = stack_get ();	705	next->cctx = cctx_get ();
731		706
732	if (prev__stack != next->stack)	707	if (prev__cctx != next->cctx)
733	{	708	{
734	prev__stack->top_env = PL_top_env;	709	prev__cctx->top_env = PL_top_env;
735	PL_top_env = next->stack->top_env;	710	PL_top_env = next->cctx->top_env;
736	coro_transfer (&prev__stack->cctx, &next->stack->cctx);	711	coro_transfer (&prev__cctx->cctx, &next->cctx->cctx);
737	}	712	}
738		713
739	free_coro_mortal ();	714	free_coro_mortal ();
740		715
741	UNLOCK;	716	UNLOCK;
742	}	717	}
743	}	718	}
744
745	/* use this function pointer to call the above function */
746	/* this is done to increase chances of the compiler not inlining the call */
747	/* not static to make it even harder for the compiler (and theoretically impossible in most cases */
748	void (coro_state_transfer)(pTHX_ struct coro prev, struct coro *next, int flags) = transfer_impl;
749		719
750	struct transfer_args	720	struct transfer_args
751	{	721	{
752	struct coro prev, next;	722	struct coro prev, next;
753	int flags;	723	int flags;
754	};	724	};
755		725
756	#define TRANSFER(ta) coro_state_transfer ((ta).prev, (ta).next, (ta).flags)	726	#define TRANSFER(ta) transfer ((ta).prev, (ta).next, (ta).flags)
757		727
758	static void	728	static void
759	coro_state_destroy (struct coro *coro)	729	coro_state_destroy (struct coro *coro)
760	{	730	{
761	if (coro->refcnt--)	731	if (coro->refcnt--)
…		…
763		733
764	if (coro->mainstack && coro->mainstack != main_mainstack)	734	if (coro->mainstack && coro->mainstack != main_mainstack)
765	{	735	{
766	struct coro temp;	736	struct coro temp;
767		737
768	SAVE (aTHX_ (&temp), TRANSFER_SAVE_ALL);	738	SAVE ((&temp), TRANSFER_SAVE_ALL);
769	LOAD (aTHX_ coro);	739	LOAD (coro);
770		740
771	destroy_stacks (aTHX);	741	coro_destroy_stacks ();
772		742
773	LOAD ((&temp)); /* this will get rid of defsv etc.. */	743	LOAD ((&temp)); /* this will get rid of defsv etc.. */
774		744
775	coro->mainstack = 0;	745	coro->mainstack = 0;
776	}	746	}
777		747
778	stack_free (coro->stack);	748	cctx_free (coro->cctx);
779	SvREFCNT_dec (coro->args);	749	SvREFCNT_dec (coro->args);
780	Safefree (coro);	750	Safefree (coro);
781	}	751	}
782		752
783	static int	753	static int
784	coro_state_clear (SV sv, MAGIC mg)	754	coro_state_clear (pTHX_ SV sv, MAGIC mg)
785	{	755	{
786	struct coro coro = (struct coro )mg->mg_ptr;	756	struct coro coro = (struct coro )mg->mg_ptr;
787	mg->mg_ptr = 0;	757	mg->mg_ptr = 0;
788		758
789	coro_state_destroy (coro);	759	coro_state_destroy (coro);
790		760
791	return 0;	761	return 0;
792	}	762	}
793		763
794	static int	764	static int
795	coro_state_dup (MAGIC mg, CLONE_PARAMS params)	765	coro_state_dup (pTHX_ MAGIC mg, CLONE_PARAMS params)
796	{	766	{
797	struct coro coro = (struct coro )mg->mg_ptr;	767	struct coro coro = (struct coro )mg->mg_ptr;
798		768
799	++coro->refcnt;	769	++coro->refcnt;
800		770
801	return 0;	771	return 0;
802	}	772	}
803		773
804	static MGVTBL coro_state_vtbl = { 0, 0, 0, 0, coro_state_clear, 0, coro_state_dup, 0 };	774	static MGVTBL coro_state_vtbl = {
		775	0, 0, 0, 0,
		776	coro_state_clear,
		777	0,
		778	#ifdef MGf_DUP
		779	coro_state_dup,
		780	#else
		781	# define MGf_DUP 0
		782	#endif
		783	};
805		784
806	static struct coro *	785	static struct coro *
807	SvSTATE (SV *coro)	786	SvSTATE (SV *coro)
808	{	787	{
809	HV *stash;	788	HV *stash;
…		…
824	assert (mg->mg_type == PERL_MAGIC_ext);	803	assert (mg->mg_type == PERL_MAGIC_ext);
825	return (struct coro *)mg->mg_ptr;	804	return (struct coro *)mg->mg_ptr;
826	}	805	}
827		806
828	static void	807	static void
829	prepare_transfer (pTHX_ struct transfer_args ta, SV prev, SV *next, int flags)	808	prepare_transfer (struct transfer_args ta, SV prev, SV *next, int flags)
830	{	809	{
831	ta->prev = SvSTATE (prev);	810	ta->prev = SvSTATE (prev);
832	ta->next = SvSTATE (next);	811	ta->next = SvSTATE (next);
833	ta->flags = flags;	812	ta->flags = flags;
834	}	813	}
…		…
837	api_transfer (SV prev, SV next, int flags)	816	api_transfer (SV prev, SV next, int flags)
838	{	817	{
839	dTHX;	818	dTHX;
840	struct transfer_args ta;	819	struct transfer_args ta;
841		820
842	prepare_transfer (aTHX_ &ta, prev, next, flags);	821	prepare_transfer (&ta, prev, next, flags);
843	TRANSFER (ta);	822	TRANSFER (ta);
844	}	823	}
845		824
846	/ Coro ******************************************************************/	825	/ Coro ******************************************************************/
847		826
…		…
856	static GV coro_current, coro_idle;	835	static GV coro_current, coro_idle;
857	static AV *coro_ready [PRIO_MAX-PRIO_MIN+1];	836	static AV *coro_ready [PRIO_MAX-PRIO_MIN+1];
858	static int coro_nready;	837	static int coro_nready;
859		838
860	static void	839	static void
861	coro_enq (pTHX_ SV *sv)	840	coro_enq (SV *sv)
862	{	841	{
863	int prio;	842	int prio;
864		843
865	if (SvTYPE (sv) != SVt_PVHV)	844	if (SvTYPE (sv) != SVt_PVHV)
866	croak ("Coro::ready tried to enqueue something that is not a coroutine");	845	croak ("Coro::ready tried to enqueue something that is not a coroutine");
…		…
870	av_push (coro_ready [prio - PRIO_MIN], sv);	849	av_push (coro_ready [prio - PRIO_MIN], sv);
871	coro_nready++;	850	coro_nready++;
872	}	851	}
873		852
874	static SV *	853	static SV *
875	coro_deq (pTHX_ int min_prio)	854	coro_deq (int min_prio)
876	{	855	{
877	int prio = PRIO_MAX - PRIO_MIN;	856	int prio = PRIO_MAX - PRIO_MIN;
878		857
879	min_prio -= PRIO_MIN;	858	min_prio -= PRIO_MIN;
880	if (min_prio < 0)	859	if (min_prio < 0)
…		…
897		876
898	if (SvROK (coro))	877	if (SvROK (coro))
899	coro = SvRV (coro);	878	coro = SvRV (coro);
900		879
901	LOCK;	880	LOCK;
902	coro_enq (aTHX_ SvREFCNT_inc (coro));	881	coro_enq (SvREFCNT_inc (coro));
903	UNLOCK;	882	UNLOCK;
904	}	883	}
905		884
906	static void	885	static void
907	prepare_schedule (aTHX_ struct transfer_args *ta)	886	prepare_schedule (struct transfer_args *ta)
908	{	887	{
909	SV current, prev, *next;	888	SV current, prev, *next;
910
911	LOCK;
912		889
913	current = GvSV (coro_current);	890	current = GvSV (coro_current);
914		891
915	for (;;)	892	for (;;)
916	{	893	{
917	LOCK;	894	LOCK;
918
919	next = coro_deq (aTHX_ PRIO_MIN);	895	next = coro_deq (PRIO_MIN);
		896	UNLOCK;
920		897
921	if (next)	898	if (next)
922	break;	899	break;
923
924	UNLOCK;
925		900
926	{	901	{
927	dSP;	902	dSP;
928		903
929	ENTER;	904	ENTER;
…		…
940		915
941	prev = SvRV (current);	916	prev = SvRV (current);
942	SvRV (current) = next;	917	SvRV (current) = next;
943		918
944	/* free this only after the transfer */	919	/* free this only after the transfer */
		920	LOCK;
945	free_coro_mortal ();	921	free_coro_mortal ();
		922	UNLOCK;
946	coro_mortal = prev;	923	coro_mortal = prev;
947		924
948	ta->prev = SvSTATE (prev);	925	ta->prev = SvSTATE (prev);
949	ta->next = SvSTATE (next);	926	ta->next = SvSTATE (next);
950	ta->flags = TRANSFER_SAVE_ALL;	927	ta->flags = TRANSFER_SAVE_ALL;
951
952	UNLOCK;
953	}	928	}
954		929
955	static void	930	static void
956	prepare_cede (aTHX_ struct transfer_args *ta)	931	prepare_cede (struct transfer_args *ta)
957	{	932	{
958	LOCK;	933	LOCK;
959	coro_enq (aTHX_ SvREFCNT_inc (SvRV (GvSV (coro_current))));	934	coro_enq (SvREFCNT_inc (SvRV (GvSV (coro_current))));
960	UNLOCK;	935	UNLOCK;
961		936
962	prepare_schedule (ta);	937	prepare_schedule (ta);
963	}	938	}
964		939
…		…
1002	main_mainstack = PL_mainstack;	977	main_mainstack = PL_mainstack;
1003		978
1004	coroapi.ver = CORO_API_VERSION;	979	coroapi.ver = CORO_API_VERSION;
1005	coroapi.transfer = api_transfer;	980	coroapi.transfer = api_transfer;
1006		981
1007	Newz (0, main_stack, 1, coro_stack);
1008	main_stack->idle_sp = (void *)-1;
1009
1010	assert (("PRIO_NORMAL must be 0", !PRIO_NORMAL));	982	assert (("PRIO_NORMAL must be 0", !PRIO_NORMAL));
1011	}	983	}
1012		984
1013	SV *	985	SV *
1014	new (char *klass, ...)	986	new (char *klass, ...)
…		…
1025	sv_magicext ((SV )hv, 0, PERL_MAGIC_ext, &coro_state_vtbl, (char )coro, 0)->mg_flags \|= MGf_DUP;	997	sv_magicext ((SV )hv, 0, PERL_MAGIC_ext, &coro_state_vtbl, (char )coro, 0)->mg_flags \|= MGf_DUP;
1026	RETVAL = sv_bless (newRV_noinc ((SV *)hv), gv_stashpv (klass, 1));	998	RETVAL = sv_bless (newRV_noinc ((SV *)hv), gv_stashpv (klass, 1));
1027		999
1028	for (i = 1; i < items; i++)	1000	for (i = 1; i < items; i++)
1029	av_push (coro->args, newSVsv (ST (i)));	1001	av_push (coro->args, newSVsv (ST (i)));
1030
1031	coro->stack = main_stack;
1032	/coro->mainstack = 0; //actual work is done inside transfer /
1033	/coro->stack = 0;/
1034	}	1002	}
1035	OUTPUT:	1003	OUTPUT:
1036	RETVAL	1004	RETVAL
1037		1005
1038	void	1006	void
1039	transfer (...)	1007	_set_stacklevel (...)
1040	ALIAS:	1008	ALIAS:
1041	Coro::schedule = 1	1009	Coro::State::transfer = 1
1042	Coro::cede = 2	1010	Coro::schedule = 2
1043	_set_stacklevel = 3	1011	Coro::cede = 3
		1012	Coro::Cont::yield = 4
1044	CODE:	1013	CODE:
1045	{	1014	{
1046	struct transfer_args ta;	1015	struct transfer_args ta;
1047		1016
1048	switch (ix)	1017	switch (ix)
1049	{	1018	{
1050	case 0:	1019	case 0:
1051	if (items != 3)
1052	croak ("Coro::State::transfer(prev,next,flags) expects three arguments, not %d", items);
1053
1054	prepare_transfer (&ta, ST (0), ST (1), SvIV (ST (2)));
1055	break;
1056
1057	case 1:
1058	prepare_schedule (&ta);
1059	break;
1060
1061	case 2:
1062	prepare_cede (&ta);
1063	break;
1064
1065	case 3:
1066	ta.prev = (struct coro )INT2PTR (coro_stack , SvIV (ST (0)));	1020	ta.prev = (struct coro )INT2PTR (coro_cctx , SvIV (ST (0)));
1067	ta.next = 0;	1021	ta.next = 0;
1068	ta.flags = TRANSFER_SET_STACKLEVEL;	1022	ta.flags = TRANSFER_SET_STACKLEVEL;
1069	break;	1023	break;
		1024
		1025	case 1:
		1026	if (items != 3)
		1027	croak ("Coro::State::transfer(prev,next,flags) expects three arguments, not %d", items);
		1028
		1029	prepare_transfer (&ta, ST (0), ST (1), SvIV (ST (2)));
		1030	break;
		1031
		1032	case 2:
		1033	prepare_schedule (&ta);
		1034	break;
		1035
		1036	case 3:
		1037	prepare_cede (&ta);
		1038	break;
		1039
		1040	case 4:
		1041	{
		1042	SV *yieldstack;
		1043	SV *sv;
		1044	AV *defav = GvAV (PL_defgv);
		1045
		1046	yieldstack = *hv_fetch (
		1047	(HV *)SvRV (GvSV (coro_current)),
		1048	"yieldstack", sizeof ("yieldstack") - 1,
		1049	0
		1050	);
		1051
		1052	/* set up @_ -- ugly */
		1053	av_clear (defav);
		1054	av_fill (defav, items - 1);
		1055	while (items--)
		1056	av_store (defav, items, SvREFCNT_inc (ST(items)));
		1057
		1058	sv = av_pop ((AV *)SvRV (yieldstack));
		1059	ta.prev = SvSTATE (av_fetch ((AV )SvRV (sv), 0, 0));
		1060	ta.next = SvSTATE (av_fetch ((AV )SvRV (sv), 1, 0));
		1061	ta.flags = 0;
		1062	SvREFCNT_dec (sv);
		1063	}
		1064	break;
		1065
1070	}	1066	}
1071		1067
1072	TRANSFER (ta);	1068	TRANSFER (ta);
1073	}	1069	}
1074		1070
…		…
1081	sv_unmagic (SvRV (dst), PERL_MAGIC_ext);	1077	sv_unmagic (SvRV (dst), PERL_MAGIC_ext);
1082		1078
1083	++coro_src->refcnt;	1079	++coro_src->refcnt;
1084	sv_magicext (SvRV (dst), 0, PERL_MAGIC_ext, &coro_state_vtbl, (char *)coro_src, 0)->mg_flags \|= MGf_DUP;	1080	sv_magicext (SvRV (dst), 0, PERL_MAGIC_ext, &coro_state_vtbl, (char *)coro_src, 0)->mg_flags \|= MGf_DUP;
1085	}	1081	}
1086
1087	void
1088	_nonlocal_goto (IV nextop)
1089	CODE:
1090	/* uuh, somebody will kill me again for this */
1091	PL_op->op_next = INT2PTR (OP *, nextop);
1092		1082
1093	void	1083	void
1094	_exit (code)	1084	_exit (code)
1095	int code	1085	int code
1096	PROTOTYPE: $	1086	PROTOTYPE: $
1097	CODE:	1087	CODE:
1098	_exit (code);	1088	_exit (code);
1099		1089
1100	MODULE = Coro::State PACKAGE = Coro::Cont	1090	int
		1091	cctx_count ()
		1092	CODE:
		1093	RETVAL = cctx_count;
		1094	OUTPUT:
		1095	RETVAL
1101		1096
1102	void	1097	int
1103	yield (...)	1098	cctx_idle ()
1104	PROTOTYPE: @	1099	CODE:
1105	CODE:	1100	RETVAL = cctx_idle;
1106	{	1101	OUTPUT:
1107	SV *yieldstack;	1102	RETVAL
1108	SV *sv;
1109	AV *defav = GvAV (PL_defgv);
1110	struct coro prev, next;
1111
1112	yieldstack = *hv_fetch (
1113	(HV *)SvRV (GvSV (coro_current)),
1114	"yieldstack", sizeof ("yieldstack") - 1,
1115	0
1116	);
1117
1118	/* set up @_ -- ugly */
1119	av_clear (defav);
1120	av_fill (defav, items - 1);
1121	while (items--)
1122	av_store (defav, items, SvREFCNT_inc (ST(items)));
1123
1124	sv = av_pop ((AV *)SvRV (yieldstack));
1125	prev = SvSTATE (av_fetch ((AV )SvRV (sv), 0, 0));
1126	next = SvSTATE (av_fetch ((AV )SvRV (sv), 1, 0));
1127	SvREFCNT_dec (sv);
1128
1129	coro_state_transfer (aTHX_ prev, next, 0);
1130	}
1131		1103
1132	MODULE = Coro::State PACKAGE = Coro	1104	MODULE = Coro::State PACKAGE = Coro
1133		1105
1134	BOOT:	1106	BOOT:
1135	{	1107	{

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Comparing Coro/Coro/State.xs (file contents): Revision 1.93 by root, Sun Nov 26 03:22:50 2006 UTC vs. Revision 1.110 by root, Tue Nov 28 23:08:07 2006 UTC

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Comparing Coro/Coro/State.xs (file contents):
Revision 1.93 by root, Sun Nov 26 03:22:50 2006 UTC vs.
Revision 1.110 by root, Tue Nov 28 23:08:07 2006 UTC