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

Comparing Coro/Coro/State.xs (file contents):
Revision 1.92 by root, Sun Nov 26 02:16:19 2006 UTC vs.
Revision 1.109 by root, Mon Nov 27 18:45:29 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	void idle_sp; / original stacklevel when coroutine was created */	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 */
		120	void idle_sp; / sp of top-level transfer/schedule/cede call */
		121	JMPENV *top_env;
100	coro_context cctx;	122	coro_context cctx;
101	JMPENV *top_env;
102	} coro_stack;
103		123
104	/* the (fake) coro_stack representing the main program */	124	#if USE_VALGRIND
105	static coro_stack *main_stack;	125	int valgrind_id;
		126	#endif
		127	} coro_cctx;
106		128
107	/* this is a structure representing a perl-level coroutine */	129	/* this is a structure representing a perl-level coroutine */
108	struct coro {	130	struct coro {
109	/* the c coroutine allocated to this perl coroutine, if any */	131	/* the c coroutine allocated to this perl coroutine, if any */
110	coro_stack *stack;	132	coro_cctx *cctx;
111		133
112	/* data associated with this coroutine (initial args) */	134	/* data associated with this coroutine (initial args) */
113	AV *args;	135	AV *args;
114	int refcnt;	136	int refcnt;
115		137
116	/* optionally saved, might be zero */	138	/* optionally saved, might be zero */
117	AV *defav;	139	AV *defav;
118	SV *defsv;	140	SV *defsv;
119	SV *errsv;	141	SV *errsv;
120		142
121	/* saved global state not related to stacks */	143	#define VAR(name,type) type name;
122	U8 dowarn;	144	# include "state.h"
123	I32 in_eval;	145	#undef VAR
124
125	/* the stacks and related info (callchain etc..) */
126	PERL_SI *curstackinfo;
127	AV *curstack;
128	AV *mainstack;
129	SV **stack_sp;
130	OP *op;
131	SV **curpad;
132	AV *comppad;
133	CV *compcv;
134	SV **stack_base;
135	SV **stack_max;
136	SV **tmps_stack;
137	I32 tmps_floor;
138	I32 tmps_ix;
139	I32 tmps_max;
140	I32 *markstack;
141	I32 *markstack_ptr;
142	I32 *markstack_max;
143	I32 *scopestack;
144	I32 scopestack_ix;
145	I32 scopestack_max;
146	ANY *savestack;
147	I32 savestack_ix;
148	I32 savestack_max;
149	OP **retstack;
150	I32 retstack_ix;
151	I32 retstack_max;
152	PMOP *curpm;
153	COP *curcop;
154		146
155	/* coro process data */	147	/* coro process data */
156	int prio;	148	int prio;
157	};	149	};
158		150
159	typedef struct coro *Coro__State;	151	typedef struct coro *Coro__State;
160	typedef struct coro *Coro__State_or_hashref;	152	typedef struct coro *Coro__State_or_hashref;
161		153
162	static AV *	154	static AV *
163	coro_clone_padlist (pTHX_ CV *cv)	155	coro_clone_padlist (CV *cv)
164	{	156	{
165	AV *padlist = CvPADLIST (cv);	157	AV *padlist = CvPADLIST (cv);
166	AV newpadlist, newpad;	158	AV newpadlist, newpad;
167		159
168	newpadlist = newAV ();	160	newpadlist = newAV ();
169	AvREAL_off (newpadlist);	161	AvREAL_off (newpadlist);
170	#if PERL_VERSION < 9	162	#if PERL_VERSION_ATLEAST (5,9,0)
		163	Perl_pad_push (aTHX_ padlist, AvFILLp (padlist) + 1);
		164	#else
171	Perl_pad_push (aTHX_ padlist, AvFILLp (padlist) + 1, 1);	165	Perl_pad_push (aTHX_ padlist, AvFILLp (padlist) + 1, 1);
172	#else
173	Perl_pad_push (aTHX_ padlist, AvFILLp (padlist) + 1);
174	#endif	166	#endif
175	newpad = (AV *)AvARRAY (padlist)[AvFILLp (padlist)];	167	newpad = (AV *)AvARRAY (padlist)[AvFILLp (padlist)];
176	--AvFILLp (padlist);	168	--AvFILLp (padlist);
177		169
178	av_store (newpadlist, 0, SvREFCNT_inc (*av_fetch (padlist, 0, FALSE)));	170	av_store (newpadlist, 0, SvREFCNT_inc (*av_fetch (padlist, 0, FALSE)));
…		…
180		172
181	return newpadlist;	173	return newpadlist;
182	}	174	}
183		175
184	static void	176	static void
185	free_padlist (pTHX_ AV *padlist)	177	free_padlist (AV *padlist)
186	{	178	{
187	/* may be during global destruction */	179	/* may be during global destruction */
188	if (SvREFCNT (padlist))	180	if (SvREFCNT (padlist))
189	{	181	{
190	I32 i = AvFILLp (padlist);	182	I32 i = AvFILLp (padlist);
…		…
211	AV *padlist;	203	AV *padlist;
212	AV av = (AV )mg->mg_obj;	204	AV av = (AV )mg->mg_obj;
213		205
214	/* casting is fun. */	206	/* casting is fun. */
215	while (&PL_sv_undef != (SV )(padlist = (AV )av_pop (av)))	207	while (&PL_sv_undef != (SV )(padlist = (AV )av_pop (av)))
216	free_padlist (aTHX_ padlist);	208	free_padlist (padlist);
217		209
218	SvREFCNT_dec (av);	210	SvREFCNT_dec (av);
219		211
220	return 0;	212	return 0;
221	}	213	}
222		214
223	#define PERL_MAGIC_coro PERL_MAGIC_ext	215	#define PERL_MAGIC_coro PERL_MAGIC_ext
224		216
225	static MGVTBL vtbl_coro = {0, 0, 0, 0, coro_cv_free};	217	static MGVTBL vtbl_coro = {0, 0, 0, 0, coro_cv_free};
226		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
227	/* the next two functions merely cache the padlists */	226	/* the next two functions merely cache the padlists */
228	static void	227	static void
229	get_padlist (pTHX_ CV *cv)	228	get_padlist (CV *cv)
230	{	229	{
231	MAGIC mg = mg_find ((SV )cv, PERL_MAGIC_coro);	230	MAGIC *mg = CORO_MAGIC (cv);
		231	AV *av;
232		232
233	if (mg && AvFILLp ((AV *)mg->mg_obj) >= 0)	233	if (mg && AvFILLp ((av = (AV *)mg->mg_obj)) >= 0)
234	CvPADLIST (cv) = (AV )av_pop ((AV )mg->mg_obj);	234	CvPADLIST (cv) = (AV *)AvARRAY (av)[AvFILLp (av)--];
235	else	235	else
236	{	236	{
237	#if 0	237	#if 0
238	/* this should work - but it doesn't :( */	238	/* this is probably cleaner, but also slower? */
239	CV *cp = Perl_cv_clone (aTHX_ cv);	239	CV *cp = Perl_cv_clone (cv);
240	CvPADLIST (cv) = CvPADLIST (cp);	240	CvPADLIST (cv) = CvPADLIST (cp);
241	CvPADLIST (cp) = 0;	241	CvPADLIST (cp) = 0;
242	SvREFCNT_dec (cp);	242	SvREFCNT_dec (cp);
243	#else	243	#else
244	CvPADLIST (cv) = coro_clone_padlist (aTHX_ cv);	244	CvPADLIST (cv) = coro_clone_padlist (cv);
245	#endif	245	#endif
246	}	246	}
247	}	247	}
248		248
249	static void	249	static void
250	put_padlist (pTHX_ CV *cv)	250	put_padlist (CV *cv)
251	{	251	{
252	MAGIC mg = mg_find ((SV )cv, PERL_MAGIC_coro);	252	MAGIC *mg = CORO_MAGIC (cv);
		253	AV *av;
253		254
254	if (!mg)	255	if (!mg)
255	{	256	{
256	sv_magic ((SV *)cv, 0, PERL_MAGIC_coro, 0, 0);	257	sv_magic ((SV *)cv, 0, PERL_MAGIC_coro, 0, 0);
257	mg = mg_find ((SV *)cv, PERL_MAGIC_coro);	258	mg = mg_find ((SV *)cv, PERL_MAGIC_coro);
258	mg->mg_virtual = &vtbl_coro;	259	mg->mg_virtual = &vtbl_coro;
259	mg->mg_obj = (SV *)newAV ();	260	mg->mg_obj = (SV *)newAV ();
260	}	261	}
261		262
262	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);
263	}	269	}
264		270
265	#define SB do {	271	#define SB do {
266	#define SE } while (0)	272	#define SE } while (0)
267		273
268	#define LOAD(state) load_state(aTHX_ (state));	274	#define LOAD(state) load_state((state));
269	#define SAVE(state,flags) save_state(aTHX_ (state),(flags));	275	#define SAVE(state,flags) save_state((state),(flags));
270		276
271	#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
272		278
273	static void	279	static void
274	load_state(pTHX_ Coro__State c)	280	load_state(Coro__State c)
275	{	281	{
276	PL_dowarn = c->dowarn;	282	#define VAR(name,type) PL_ ## name = c->name;
277	PL_in_eval = c->in_eval;	283	# include "state.h"
278		284	#undef VAR
279	PL_curstackinfo = c->curstackinfo;
280	PL_curstack = c->curstack;
281	PL_mainstack = c->mainstack;
282	PL_stack_sp = c->stack_sp;
283	PL_op = c->op;
284	PL_curpad = c->curpad;
285	PL_comppad = c->comppad;
286	PL_compcv = c->compcv;
287	PL_stack_base = c->stack_base;
288	PL_stack_max = c->stack_max;
289	PL_tmps_stack = c->tmps_stack;
290	PL_tmps_floor = c->tmps_floor;
291	PL_tmps_ix = c->tmps_ix;
292	PL_tmps_max = c->tmps_max;
293	PL_markstack = c->markstack;
294	PL_markstack_ptr = c->markstack_ptr;
295	PL_markstack_max = c->markstack_max;
296	PL_scopestack = c->scopestack;
297	PL_scopestack_ix = c->scopestack_ix;
298	PL_scopestack_max = c->scopestack_max;
299	PL_savestack = c->savestack;
300	PL_savestack_ix = c->savestack_ix;
301	PL_savestack_max = c->savestack_max;
302	#if PERL_VERSION < 9
303	PL_retstack = c->retstack;
304	PL_retstack_ix = c->retstack_ix;
305	PL_retstack_max = c->retstack_max;
306	#endif
307	PL_curpm = c->curpm;
308	PL_curcop = c->curcop;
309		285
310	if (c->defav) REPLACE_SV (GvAV (PL_defgv), c->defav);	286	if (c->defav) REPLACE_SV (GvAV (PL_defgv), c->defav);
311	if (c->defsv) REPLACE_SV (DEFSV , c->defsv);	287	if (c->defsv) REPLACE_SV (DEFSV , c->defsv);
312	if (c->errsv) REPLACE_SV (ERRSV , c->errsv);	288	if (c->errsv) REPLACE_SV (ERRSV , c->errsv);
313		289
…		…
316	CV *cv;	292	CV *cv;
317		293
318	/* now do the ugly restore mess */	294	/* now do the ugly restore mess */
319	while ((cv = (CV *)POPs))	295	while ((cv = (CV *)POPs))
320	{	296	{
321	AV padlist = (AV )POPs;
322
323	if (padlist)
324	{
325	put_padlist (aTHX_ cv); /* mark this padlist as available */	297	put_padlist (cv); /* mark this padlist as available */
326	CvPADLIST(cv) = padlist;	298	CvDEPTH (cv) = PTR2IV (POPs);
327	}	299	CvPADLIST (cv) = (AV *)POPs;
328
329	++CvDEPTH(cv);
330	}	300	}
331		301
332	PUTBACK;	302	PUTBACK;
333	}	303	}
334	}	304	}
335		305
336	static void	306	static void
337	save_state(pTHX_ Coro__State c, int flags)	307	save_state(Coro__State c, int flags)
338	{	308	{
339	{	309	{
340	dSP;	310	dSP;
341	I32 cxix = cxstack_ix;	311	I32 cxix = cxstack_ix;
342	PERL_CONTEXT *ccstk = cxstack;	312	PERL_CONTEXT *ccstk = cxstack;
…		…
356	PERL_CONTEXT *cx = &ccstk[cxix--];	326	PERL_CONTEXT *cx = &ccstk[cxix--];
357		327
358	if (CxTYPE(cx) == CXt_SUB)	328	if (CxTYPE(cx) == CXt_SUB)
359	{	329	{
360	CV *cv = cx->blk_sub.cv;	330	CV *cv = cx->blk_sub.cv;
		331
361	if (CvDEPTH(cv))	332	if (CvDEPTH (cv))
362	{	333	{
363	EXTEND (SP, CvDEPTH(cv)*2);	334	EXTEND (SP, 3);
364
365	while (--CvDEPTH(cv))
366	{
367	/* this tells the restore code to increment CvDEPTH */
368	PUSHs (Nullsv);
369	PUSHs ((SV *)cv);
370	}
371		335
372	PUSHs ((SV *)CvPADLIST(cv));	336	PUSHs ((SV *)CvPADLIST(cv));
		337	PUSHs (INT2PTR (SV *, CvDEPTH (cv)));
373	PUSHs ((SV *)cv);	338	PUSHs ((SV *)cv);
374		339
		340	CvDEPTH (cv) = 0;
375	get_padlist (aTHX_ cv);	341	get_padlist (cv);
376	}	342	}
377	}	343	}
378	#ifdef CXt_FORMAT	344	#ifdef CXt_FORMAT
379	else if (CxTYPE(cx) == CXt_FORMAT)	345	else if (CxTYPE(cx) == CXt_FORMAT)
380	{	346	{
…		…
398		364
399	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;
400	c->defsv = flags & TRANSFER_SAVE_DEFSV ? SvREFCNT_inc (DEFSV) : 0;	366	c->defsv = flags & TRANSFER_SAVE_DEFSV ? SvREFCNT_inc (DEFSV) : 0;
401	c->errsv = flags & TRANSFER_SAVE_ERRSV ? SvREFCNT_inc (ERRSV) : 0;	367	c->errsv = flags & TRANSFER_SAVE_ERRSV ? SvREFCNT_inc (ERRSV) : 0;
402		368
403	c->dowarn = PL_dowarn;	369	#define VAR(name,type)c->name = PL_ ## name;
404	c->in_eval = PL_in_eval;	370	# include "state.h"
405		371	#undef VAR
406	c->curstackinfo = PL_curstackinfo;
407	c->curstack = PL_curstack;
408	c->mainstack = PL_mainstack;
409	c->stack_sp = PL_stack_sp;
410	c->op = PL_op;
411	c->curpad = PL_curpad;
412	c->comppad = PL_comppad;
413	c->compcv = PL_compcv;
414	c->stack_base = PL_stack_base;
415	c->stack_max = PL_stack_max;
416	c->tmps_stack = PL_tmps_stack;
417	c->tmps_floor = PL_tmps_floor;
418	c->tmps_ix = PL_tmps_ix;
419	c->tmps_max = PL_tmps_max;
420	c->markstack = PL_markstack;
421	c->markstack_ptr = PL_markstack_ptr;
422	c->markstack_max = PL_markstack_max;
423	c->scopestack = PL_scopestack;
424	c->scopestack_ix = PL_scopestack_ix;
425	c->scopestack_max = PL_scopestack_max;
426	c->savestack = PL_savestack;
427	c->savestack_ix = PL_savestack_ix;
428	c->savestack_max = PL_savestack_max;
429	#if PERL_VERSION < 9
430	c->retstack = PL_retstack;
431	c->retstack_ix = PL_retstack_ix;
432	c->retstack_max = PL_retstack_max;
433	#endif
434	c->curpm = PL_curpm;
435	c->curcop = PL_curcop;
436	}	372	}
437		373
438	/*	374	/*
439	* allocate various perl stacks. This is an exact copy	375	* allocate various perl stacks. This is an exact copy
440	* of perl.c:init_stacks, except that it uses less memory	376	* of perl.c:init_stacks, except that it uses less memory
441	* on the (sometimes correct) assumption that coroutines do	377	* on the (sometimes correct) assumption that coroutines do
442	* not usually need a lot of stackspace.	378	* not usually need a lot of stackspace.
443	*/	379	*/
444	static void	380	static void
445	coro_init_stacks (pTHX)	381	coro_init_stacks ()
446	{	382	{
447	LOCK;
448
449	PL_curstackinfo = new_stackinfo(96, 1024/sizeof(PERL_CONTEXT) - 1);	383	PL_curstackinfo = new_stackinfo(96, 1024/sizeof(PERL_CONTEXT) - 1);
450	PL_curstackinfo->si_type = PERLSI_MAIN;	384	PL_curstackinfo->si_type = PERLSI_MAIN;
451	PL_curstack = PL_curstackinfo->si_stack;	385	PL_curstack = PL_curstackinfo->si_stack;
452	PL_mainstack = PL_curstack; /* remember in case we switch stacks */	386	PL_mainstack = PL_curstack; /* remember in case we switch stacks */
453		387
…		…
474		408
475	New(54,PL_savestack,96,ANY);	409	New(54,PL_savestack,96,ANY);
476	PL_savestack_ix = 0;	410	PL_savestack_ix = 0;
477	PL_savestack_max = 96;	411	PL_savestack_max = 96;
478		412
479	#if PERL_VERSION < 9	413	#if !PERL_VERSION_ATLEAST (5,9,0)
480	New(54,PL_retstack,8,OP*);	414	New(54,PL_retstack,8,OP*);
481	PL_retstack_ix = 0;	415	PL_retstack_ix = 0;
482	PL_retstack_max = 8;	416	PL_retstack_max = 8;
483	#endif	417	#endif
484
485	UNLOCK;
486	}	418	}
487		419
488	/*	420	/*
489	* destroy the stacks, the callchain etc...	421	* destroy the stacks, the callchain etc...
490	*/	422	*/
491	static void	423	static void
492	destroy_stacks(pTHX)	424	coro_destroy_stacks ()
493	{	425	{
494	if (!IN_DESTRUCT)	426	if (!IN_DESTRUCT)
495	{	427	{
496	/* is this ugly, I ask? */	428	/* is this ugly, I ask? */
497	LEAVE_SCOPE (0);	429	LEAVE_SCOPE (0);
…		…
528		460
529	Safefree (PL_tmps_stack);	461	Safefree (PL_tmps_stack);
530	Safefree (PL_markstack);	462	Safefree (PL_markstack);
531	Safefree (PL_scopestack);	463	Safefree (PL_scopestack);
532	Safefree (PL_savestack);	464	Safefree (PL_savestack);
533	#if PERL_VERSION < 9	465	#if !PERL_VERSION_ATLEAST (5,9,0)
534	Safefree (PL_retstack);	466	Safefree (PL_retstack);
535	#endif	467	#endif
536	}	468	}
537		469
538	static void	470	static void
539	setup_coro (struct coro *coro)	471	setup_coro (struct coro *coro)
540	{	472	{
541	/*	473	/*
542	* emulate part of the perl startup here.	474	* emulate part of the perl startup here.
543	*/	475	*/
544	dTHX;
545	dSP;
546	UNOP myop;
547	SV sub_init = (SV )get_cv ("Coro::State::coro_init", FALSE);
548		476
549	coro_init_stacks (aTHX);	477	coro_init_stacks ();
		478
550	/PL_curcop = 0;/	479	PL_curcop = 0;
551	/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
552	SvREFCNT_dec (GvAV (PL_defgv));	490	SvREFCNT_dec (GvAV (PL_defgv));
553	GvAV (PL_defgv) = coro->args; coro->args = 0;	491	GvAV (PL_defgv) = coro->args; coro->args = 0;
554		492
555	SPAGAIN;
556
557	Zero (&myop, 1, UNOP);	493	Zero (&myop, 1, LOGOP);
558	myop.op_next = Nullop;	494	myop.op_next = Nullop;
559	myop.op_flags = OPf_WANT_VOID;	495	myop.op_flags = OPf_WANT_VOID;
560		496
561	PL_op = (OP *)&myop;	497	PL_op = (OP *)&myop;
562		498
563	PUSHMARK(SP);	499	PUSHMARK (SP);
564	XPUSHs (sub_init);	500	XPUSHs ((SV *)get_cv ("Coro::State::_coro_init", FALSE));
565	PUTBACK;	501	PUTBACK;
566	PL_op = PL_ppaddr[OP_ENTERSUB](aTHX);	502	PL_op = PL_ppaddr[OP_ENTERSUB](aTHX);
567	SPAGAIN;	503	SPAGAIN;
568		504
569	ENTER; /* necessary e.g. for dounwind */	505	ENTER; /* necessary e.g. for dounwind */
		506	}
570	}	507	}
571		508
572	static void	509	static void
573	free_coro_mortal ()	510	free_coro_mortal ()
574	{	511	{
…		…
577	SvREFCNT_dec (coro_mortal);	514	SvREFCNT_dec (coro_mortal);
578	coro_mortal = 0;	515	coro_mortal = 0;
579	}	516	}
580	}	517	}
581		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
582	static void	538	static void
583	coro_run (void *arg)	539	coro_run (void *arg)
584	{	540	{
		541	/* coro_run is the alternative epilogue of transfer() */
		542	UNLOCK;
		543
585	/*	544	/*
586	* this is a _very_ stripped down perl interpreter ;)	545	* this is a _very_ stripped down perl interpreter ;)
587	*/	546	*/
588	dTHX;
589	PL_top_env = &PL_start_env;	547	PL_top_env = &PL_start_env;
590		548
591	UNLOCK;	549	/* inject call to cctx_init */
		550	prepare_cctx ((coro_cctx *)arg);
592		551
593	sv_setiv (get_sv ("Coro::State::cctx_stack", FALSE), PTR2IV ((coro_stack *)arg));
594	sv_setiv (get_sv ("Coro::State::cctx_restartop", FALSE), PTR2IV (PL_op));
595	PL_restartop = CvSTART (get_cv ("Coro::State::cctx_init", FALSE));
596
597	/* somebody will hit me for both perl_run and PL_restart_op */	552	/* somebody will hit me for both perl_run and PL_restartop */
598	perl_run (aTHX_ PERL_GET_CONTEXT);	553	perl_run (PL_curinterp);
599		554
		555	fputs ("FATAL: C coroutine fell over the edge of the world, aborting. Did you call exit in a coroutine?\n", stderr);
600	abort ();	556	abort ();
601	}	557	}
602		558
603	static coro_stack *	559	static coro_cctx *
604	stack_new ()	560	cctx_new ()
605	{	561	{
606	coro_stack *stack;	562	coro_cctx *cctx;
607		563
		564	++cctx_count;
		565
608	New (0, stack, 1, coro_stack);	566	New (0, cctx, 1, coro_cctx);
609		567
610	#if HAVE_MMAP	568	#if HAVE_MMAP
611		569
612	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 */
613	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);
614		573
615	if (stack->sptr == (void *)-1)	574	if (cctx->sptr == (void *)-1)
616	{	575	{
617	perror ("FATAL: unable to mmap stack for coroutine");	576	perror ("FATAL: unable to mmap stack for coroutine");
618	_exit (EXIT_FAILURE);	577	_exit (EXIT_FAILURE);
619	}	578	}
620		579
		580	# if STACKGUARD
621	mprotect (stack->sptr, STACKGUARD * PAGESIZE, PROT_NONE);	581	mprotect (cctx->sptr, STACKGUARD * PAGESIZE, PROT_NONE);
		582	# endif
622		583
623	#else	584	#else
624		585
625	stack->ssize = STACKSIZE * (long)sizeof (long);	586	cctx->ssize = STACKSIZE * (long)sizeof (long);
626	New (0, stack->sptr, STACKSIZE, long);	587	New (0, cctx->sptr, STACKSIZE, long);
627		588
628	if (!stack->sptr)	589	if (!cctx->sptr)
629	{	590	{
630	perror (stderr, "FATAL: unable to malloc stack for coroutine");	591	perror ("FATAL: unable to malloc stack for coroutine");
631	_exit (EXIT_FAILURE);	592	_exit (EXIT_FAILURE);
632	}	593	}
633		594
634	#endif	595	#endif
635		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
636	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);
637		605
638	return stack;	606	return cctx;
639	}	607	}
640		608
641	static void	609	static void
642	stack_free (coro_stack *stack)	610	cctx_free (coro_cctx *cctx)
643	{	611	{
644	if (!stack \|\| stack == main_stack)	612	if (!cctx)
645	return;	613	return;
646		614
		615	--cctx_count;
		616
		617	#if USE_VALGRIND
		618	VALGRIND_STACK_DEREGISTER (cctx->valgrind_id);
		619	#endif
		620
647	#if HAVE_MMAP	621	#if HAVE_MMAP
648	munmap (stack->sptr, stack->ssize);	622	munmap (cctx->sptr, cctx->ssize);
649	#else	623	#else
650	Safefree (stack->sptr);	624	Safefree (cctx->sptr);
651	#endif	625	#endif
652		626
653	Safefree (stack);	627	Safefree (cctx);
654	}	628	}
655		629
656	static coro_stack *stack_first;
657
658	static coro_stack *	630	static coro_cctx *
659	stack_get ()	631	cctx_get ()
660	{	632	{
661	coro_stack *stack;	633	coro_cctx *cctx;
662		634
663	if (stack_first)	635	if (cctx_first)
664	{	636	{
665	stack = stack_first;	637	--cctx_idle;
		638	cctx = cctx_first;
666	stack_first = stack->next;	639	cctx_first = cctx->next;
667	}	640	}
668	else	641	else
669	{	642	{
670	stack = stack_new ();	643	cctx = cctx_new ();
671	PL_op = PL_op->op_next;	644	PL_op = PL_op->op_next;
672	}	645	}
673		646
674	return stack;	647	return cctx;
675	}	648	}
676		649
677	static void	650	static void
678	stack_put (coro_stack *stack)	651	cctx_put (coro_cctx *cctx)
679	{	652	{
680	stack->next = stack_first;	653	++cctx_idle;
681	stack_first = stack;	654	cctx->next = cctx_first;
		655	cctx_first = cctx;
682	}	656	}
683		657
684	/* never call directly, always through the coro_state_transfer global variable */	658	/* never call directly, always through the coro_state_transfer global variable */
685	static void	659	static void NOINLINE
686	transfer_impl (pTHX_ struct coro prev, struct coro next, int flags)	660	transfer (struct coro prev, struct coro next, int flags)
687	{	661	{
688	dSTACKLEVEL;	662	dSTACKLEVEL;
689		663
690	/* sometimes transfer is only called to set idle_sp */	664	/* sometimes transfer is only called to set idle_sp */
691	if (flags == TRANSFER_SET_STACKLEVEL)	665	if (flags == TRANSFER_SET_STACKLEVEL)
692	((coro_stack *)prev)->idle_sp = STACKLEVEL;	666	((coro_cctx *)prev)->idle_sp = STACKLEVEL;
693	else if (prev != next)	667	else if (prev != next)
694	{	668	{
695	coro_stack *prev__stack;	669	coro_cctx *prev__cctx;
696		670
697	LOCK;	671	LOCK;
698		672
699	if (next->mainstack)	673	if (next->mainstack)
700	{	674	{
…		…
708	/* first get rid of the old state */	682	/* first get rid of the old state */
709	SAVE (prev, -1);	683	SAVE (prev, -1);
710	/* setup coroutine call */	684	/* setup coroutine call */
711	setup_coro (next);	685	setup_coro (next);
712	/* need a stack */	686	/* need a stack */
713	next->stack = 0;	687	next->cctx = 0;
714	}	688	}
715		689
		690	if (!prev->cctx)
		691	/* create a new empty context */
		692	Newz (0, prev->cctx, 1, coro_cctx);
		693
716	prev__stack = prev->stack;	694	prev__cctx = prev->cctx;
717		695
718	/* possibly "free" the stack */	696	/* possibly "free" the cctx */
719	if (prev__stack->idle_sp == STACKLEVEL)	697	if (prev__cctx->idle_sp == STACKLEVEL)
720	{	698	{
721	stack_put (prev__stack);	699	cctx_put (prev__cctx);
722	prev->stack = 0;	700	prev->cctx = 0;
723	}	701	}
724		702
725	if (!next->stack)	703	if (!next->cctx)
726	next->stack = stack_get ();	704	next->cctx = cctx_get ();
727		705
728	if (prev__stack != next->stack)	706	if (prev__cctx != next->cctx)
729	{	707	{
730	prev__stack->top_env = PL_top_env;	708	prev__cctx->top_env = PL_top_env;
731	PL_top_env = next->stack->top_env;	709	PL_top_env = next->cctx->top_env;
732	coro_transfer (&prev__stack->cctx, &next->stack->cctx);	710	coro_transfer (&prev__cctx->cctx, &next->cctx->cctx);
733	}	711	}
734		712
735	free_coro_mortal ();	713	free_coro_mortal ();
736		714
737	UNLOCK;	715	UNLOCK;
738	}	716	}
739	}	717	}
740
741	/* use this function pointer to call the above function */
742	/* this is done to increase chances of the compiler not inlining the call */
743	/* not static to make it even harder for the compiler (and theoretically impossible in most cases */
744	void (coro_state_transfer)(pTHX_ struct coro prev, struct coro *next, int flags) = transfer_impl;
745		718
746	struct transfer_args	719	struct transfer_args
747	{	720	{
748	struct coro prev, next;	721	struct coro prev, next;
749	int flags;	722	int flags;
750	};	723	};
751		724
752	#define TRANSFER(ta) coro_state_transfer ((ta).prev, (ta).next, (ta).flags)	725	#define TRANSFER(ta) transfer ((ta).prev, (ta).next, (ta).flags)
753		726
754	static void	727	static void
755	coro_state_destroy (struct coro *coro)	728	coro_state_destroy (struct coro *coro)
756	{	729	{
757	if (coro->refcnt--)	730	if (coro->refcnt--)
…		…
759		732
760	if (coro->mainstack && coro->mainstack != main_mainstack)	733	if (coro->mainstack && coro->mainstack != main_mainstack)
761	{	734	{
762	struct coro temp;	735	struct coro temp;
763		736
764	SAVE (aTHX_ (&temp), TRANSFER_SAVE_ALL);	737	SAVE ((&temp), TRANSFER_SAVE_ALL);
765	LOAD (aTHX_ coro);	738	LOAD (coro);
766		739
767	destroy_stacks (aTHX);	740	coro_destroy_stacks ();
768		741
769	LOAD ((&temp)); /* this will get rid of defsv etc.. */	742	LOAD ((&temp)); /* this will get rid of defsv etc.. */
770		743
771	coro->mainstack = 0;	744	coro->mainstack = 0;
772	}	745	}
773		746
774	stack_free (coro->stack);	747	cctx_free (coro->cctx);
775	SvREFCNT_dec (coro->args);	748	SvREFCNT_dec (coro->args);
776	Safefree (coro);	749	Safefree (coro);
777	}	750	}
778		751
779	static int	752	static int
780	coro_state_clear (SV sv, MAGIC mg)	753	coro_state_clear (pTHX_ SV sv, MAGIC mg)
781	{	754	{
782	struct coro coro = (struct coro )mg->mg_ptr;	755	struct coro coro = (struct coro )mg->mg_ptr;
783	mg->mg_ptr = 0;	756	mg->mg_ptr = 0;
784		757
785	coro_state_destroy (coro);	758	coro_state_destroy (coro);
786		759
787	return 0;	760	return 0;
788	}	761	}
789		762
790	static int	763	static int
791	coro_state_dup (MAGIC mg, CLONE_PARAMS params)	764	coro_state_dup (pTHX_ MAGIC mg, CLONE_PARAMS params)
792	{	765	{
793	struct coro coro = (struct coro )mg->mg_ptr;	766	struct coro coro = (struct coro )mg->mg_ptr;
794		767
795	++coro->refcnt;	768	++coro->refcnt;
796		769
797	return 0;	770	return 0;
798	}	771	}
799		772
800	static MGVTBL coro_state_vtbl = { 0, 0, 0, 0, coro_state_clear, 0, coro_state_dup, 0 };	773	static MGVTBL coro_state_vtbl = {
		774	0, 0, 0, 0,
		775	coro_state_clear,
		776	0,
		777	#ifdef MGf_DUP
		778	coro_state_dup,
		779	#else
		780	# define MGf_DUP 0
		781	#endif
		782	};
801		783
802	static struct coro *	784	static struct coro *
803	SvSTATE (SV *coro)	785	SvSTATE (SV *coro)
804	{	786	{
805	HV *stash;	787	HV *stash;
…		…
820	assert (mg->mg_type == PERL_MAGIC_ext);	802	assert (mg->mg_type == PERL_MAGIC_ext);
821	return (struct coro *)mg->mg_ptr;	803	return (struct coro *)mg->mg_ptr;
822	}	804	}
823		805
824	static void	806	static void
825	prepare_transfer (pTHX_ struct transfer_args ta, SV prev, SV *next, int flags)	807	prepare_transfer (struct transfer_args ta, SV prev, SV *next, int flags)
826	{	808	{
827	ta->prev = SvSTATE (prev);	809	ta->prev = SvSTATE (prev);
828	ta->next = SvSTATE (next);	810	ta->next = SvSTATE (next);
829	ta->flags = flags;	811	ta->flags = flags;
830	}	812	}
…		…
833	api_transfer (SV prev, SV next, int flags)	815	api_transfer (SV prev, SV next, int flags)
834	{	816	{
835	dTHX;	817	dTHX;
836	struct transfer_args ta;	818	struct transfer_args ta;
837		819
838	prepare_transfer (aTHX_ &ta, prev, next, flags);	820	prepare_transfer (&ta, prev, next, flags);
839	TRANSFER (ta);	821	TRANSFER (ta);
840	}	822	}
841		823
842	/ Coro ******************************************************************/	824	/ Coro ******************************************************************/
843		825
…		…
852	static GV coro_current, coro_idle;	834	static GV coro_current, coro_idle;
853	static AV *coro_ready [PRIO_MAX-PRIO_MIN+1];	835	static AV *coro_ready [PRIO_MAX-PRIO_MIN+1];
854	static int coro_nready;	836	static int coro_nready;
855		837
856	static void	838	static void
857	coro_enq (pTHX_ SV *sv)	839	coro_enq (SV *sv)
858	{	840	{
859	int prio;	841	int prio;
860		842
861	if (SvTYPE (sv) != SVt_PVHV)	843	if (SvTYPE (sv) != SVt_PVHV)
862	croak ("Coro::ready tried to enqueue something that is not a coroutine");	844	croak ("Coro::ready tried to enqueue something that is not a coroutine");
…		…
866	av_push (coro_ready [prio - PRIO_MIN], sv);	848	av_push (coro_ready [prio - PRIO_MIN], sv);
867	coro_nready++;	849	coro_nready++;
868	}	850	}
869		851
870	static SV *	852	static SV *
871	coro_deq (pTHX_ int min_prio)	853	coro_deq (int min_prio)
872	{	854	{
873	int prio = PRIO_MAX - PRIO_MIN;	855	int prio = PRIO_MAX - PRIO_MIN;
874		856
875	min_prio -= PRIO_MIN;	857	min_prio -= PRIO_MIN;
876	if (min_prio < 0)	858	if (min_prio < 0)
…		…
893		875
894	if (SvROK (coro))	876	if (SvROK (coro))
895	coro = SvRV (coro);	877	coro = SvRV (coro);
896		878
897	LOCK;	879	LOCK;
898	coro_enq (aTHX_ SvREFCNT_inc (coro));	880	coro_enq (SvREFCNT_inc (coro));
899	UNLOCK;	881	UNLOCK;
900	}	882	}
901		883
902	static void	884	static void
903	prepare_schedule (aTHX_ struct transfer_args *ta)	885	prepare_schedule (struct transfer_args *ta)
904	{	886	{
905	SV current, prev, *next;	887	SV current, prev, *next;
906
907	LOCK;
908		888
909	current = GvSV (coro_current);	889	current = GvSV (coro_current);
910		890
911	for (;;)	891	for (;;)
912	{	892	{
913	LOCK;	893	LOCK;
914
915	next = coro_deq (aTHX_ PRIO_MIN);	894	next = coro_deq (PRIO_MIN);
		895	UNLOCK;
916		896
917	if (next)	897	if (next)
918	break;	898	break;
919
920	UNLOCK;
921		899
922	{	900	{
923	dSP;	901	dSP;
924		902
925	ENTER;	903	ENTER;
…		…
936		914
937	prev = SvRV (current);	915	prev = SvRV (current);
938	SvRV (current) = next;	916	SvRV (current) = next;
939		917
940	/* free this only after the transfer */	918	/* free this only after the transfer */
		919	LOCK;
941	free_coro_mortal ();	920	free_coro_mortal ();
		921	UNLOCK;
942	coro_mortal = prev;	922	coro_mortal = prev;
943		923
944	ta->prev = SvSTATE (prev);	924	ta->prev = SvSTATE (prev);
945	ta->next = SvSTATE (next);	925	ta->next = SvSTATE (next);
946	ta->flags = TRANSFER_SAVE_ALL;	926	ta->flags = TRANSFER_SAVE_ALL;
947
948	UNLOCK;
949	}	927	}
950		928
951	static void	929	static void
952	prepare_cede (aTHX_ struct transfer_args *ta)	930	prepare_cede (struct transfer_args *ta)
953	{	931	{
954	LOCK;	932	LOCK;
955	coro_enq (aTHX_ SvREFCNT_inc (SvRV (GvSV (coro_current))));	933	coro_enq (SvREFCNT_inc (SvRV (GvSV (coro_current))));
956	UNLOCK;	934	UNLOCK;
957		935
958	prepare_schedule (ta);	936	prepare_schedule (ta);
959	}	937	}
960		938
…		…
998	main_mainstack = PL_mainstack;	976	main_mainstack = PL_mainstack;
999		977
1000	coroapi.ver = CORO_API_VERSION;	978	coroapi.ver = CORO_API_VERSION;
1001	coroapi.transfer = api_transfer;	979	coroapi.transfer = api_transfer;
1002		980
1003	Newz (0, main_stack, 1, coro_stack);
1004	main_stack->idle_sp = (void *)-1;
1005
1006	assert (("PRIO_NORMAL must be 0", !PRIO_NORMAL));	981	assert (("PRIO_NORMAL must be 0", !PRIO_NORMAL));
1007	}	982	}
1008		983
1009	SV *	984	SV *
1010	new (char *klass, ...)	985	new (char *klass, ...)
…		…
1021	sv_magicext ((SV )hv, 0, PERL_MAGIC_ext, &coro_state_vtbl, (char )coro, 0)->mg_flags \|= MGf_DUP;	996	sv_magicext ((SV )hv, 0, PERL_MAGIC_ext, &coro_state_vtbl, (char )coro, 0)->mg_flags \|= MGf_DUP;
1022	RETVAL = sv_bless (newRV_noinc ((SV *)hv), gv_stashpv (klass, 1));	997	RETVAL = sv_bless (newRV_noinc ((SV *)hv), gv_stashpv (klass, 1));
1023		998
1024	for (i = 1; i < items; i++)	999	for (i = 1; i < items; i++)
1025	av_push (coro->args, newSVsv (ST (i)));	1000	av_push (coro->args, newSVsv (ST (i)));
1026
1027	coro->stack = main_stack;
1028	/coro->mainstack = 0; //actual work is done inside transfer /
1029	/coro->stack = 0;/
1030	}	1001	}
1031	OUTPUT:	1002	OUTPUT:
1032	RETVAL	1003	RETVAL
1033		1004
1034	void	1005	void
1035	transfer (...)	1006	_set_stacklevel (...)
1036	ALIAS:	1007	ALIAS:
1037	Coro::schedule = 1	1008	Coro::State::transfer = 1
1038	Coro::cede = 2	1009	Coro::schedule = 2
1039	_set_stacklevel = 3	1010	Coro::cede = 3
		1011	Coro::Cont::yield = 4
1040	CODE:	1012	CODE:
1041	{	1013	{
1042	struct transfer_args ta;	1014	struct transfer_args ta;
1043		1015
1044	switch (ix)	1016	switch (ix)
1045	{	1017	{
1046	case 0:	1018	case 0:
1047	if (items != 3)
1048	croak ("Coro::State::transfer(prev,next,flags) expects three arguments, not %d", items);
1049
1050	prepare_transfer (&ta, ST (0), ST (1), SvIV (ST (2)));
1051	break;
1052
1053	case 1:
1054	prepare_schedule (&ta);
1055	break;
1056
1057	case 2:
1058	prepare_cede (&ta);
1059	break;
1060
1061	case 3:
1062	ta.prev = (struct coro )INT2PTR (coro_stack , SvIV (ST (0)));	1019	ta.prev = (struct coro )INT2PTR (coro_cctx , SvIV (ST (0)));
1063	ta.next = 0;	1020	ta.next = 0;
1064	ta.flags = TRANSFER_SET_STACKLEVEL;	1021	ta.flags = TRANSFER_SET_STACKLEVEL;
1065	break;	1022	break;
		1023
		1024	case 1:
		1025	if (items != 3)
		1026	croak ("Coro::State::transfer(prev,next,flags) expects three arguments, not %d", items);
		1027
		1028	prepare_transfer (&ta, ST (0), ST (1), SvIV (ST (2)));
		1029	break;
		1030
		1031	case 2:
		1032	prepare_schedule (&ta);
		1033	break;
		1034
		1035	case 3:
		1036	prepare_cede (&ta);
		1037	break;
		1038
		1039	case 4:
		1040	{
		1041	SV *yieldstack;
		1042	SV *sv;
		1043	AV *defav = GvAV (PL_defgv);
		1044
		1045	yieldstack = *hv_fetch (
		1046	(HV *)SvRV (GvSV (coro_current)),
		1047	"yieldstack", sizeof ("yieldstack") - 1,
		1048	0
		1049	);
		1050
		1051	/* set up @_ -- ugly */
		1052	av_clear (defav);
		1053	av_fill (defav, items - 1);
		1054	while (items--)
		1055	av_store (defav, items, SvREFCNT_inc (ST(items)));
		1056
		1057	sv = av_pop ((AV *)SvRV (yieldstack));
		1058	ta.prev = SvSTATE (av_fetch ((AV )SvRV (sv), 0, 0));
		1059	ta.next = SvSTATE (av_fetch ((AV )SvRV (sv), 1, 0));
		1060	ta.flags = 0;
		1061	SvREFCNT_dec (sv);
		1062	}
		1063	break;
		1064
1066	}	1065	}
1067		1066
1068	TRANSFER (ta);	1067	TRANSFER (ta);
1069	}	1068	}
1070		1069
…		…
1077	sv_unmagic (SvRV (dst), PERL_MAGIC_ext);	1076	sv_unmagic (SvRV (dst), PERL_MAGIC_ext);
1078		1077
1079	++coro_src->refcnt;	1078	++coro_src->refcnt;
1080	sv_magicext (SvRV (dst), 0, PERL_MAGIC_ext, &coro_state_vtbl, (char *)coro_src, 0)->mg_flags \|= MGf_DUP;	1079	sv_magicext (SvRV (dst), 0, PERL_MAGIC_ext, &coro_state_vtbl, (char *)coro_src, 0)->mg_flags \|= MGf_DUP;
1081	}	1080	}
1082
1083	void
1084	_nonlocal_goto (IV nextop)
1085	CODE:
1086	/* uuh, somebody will kill me again for this */
1087	PL_op->op_next = INT2PTR (OP *, nextop);
1088		1081
1089	void	1082	void
1090	_exit (code)	1083	_exit (code)
1091	int code	1084	int code
1092	PROTOTYPE: $	1085	PROTOTYPE: $
1093	CODE:	1086	CODE:
1094	_exit (code);	1087	_exit (code);
1095		1088
1096	MODULE = Coro::State PACKAGE = Coro::Cont	1089	int
		1090	cctx_count ()
		1091	CODE:
		1092	RETVAL = cctx_count;
		1093	OUTPUT:
		1094	RETVAL
1097		1095
1098	void	1096	int
1099	yield (...)	1097	cctx_idle ()
1100	PROTOTYPE: @	1098	CODE:
1101	CODE:	1099	RETVAL = cctx_idle;
1102	{	1100	OUTPUT:
1103	SV *yieldstack;	1101	RETVAL
1104	SV *sv;
1105	AV *defav = GvAV (PL_defgv);
1106	struct coro prev, next;
1107
1108	yieldstack = *hv_fetch (
1109	(HV *)SvRV (GvSV (coro_current)),
1110	"yieldstack", sizeof ("yieldstack") - 1,
1111	0
1112	);
1113
1114	/* set up @_ -- ugly */
1115	av_clear (defav);
1116	av_fill (defav, items - 1);
1117	while (items--)
1118	av_store (defav, items, SvREFCNT_inc (ST(items)));
1119
1120	sv = av_pop ((AV *)SvRV (yieldstack));
1121	prev = SvSTATE (av_fetch ((AV )SvRV (sv), 0, 0));
1122	next = SvSTATE (av_fetch ((AV )SvRV (sv), 1, 0));
1123	SvREFCNT_dec (sv);
1124
1125	coro_state_transfer (aTHX_ prev, next, 0);
1126	}
1127		1102
1128	MODULE = Coro::State PACKAGE = Coro	1103	MODULE = Coro::State PACKAGE = Coro
1129		1104
1130	BOOT:	1105	BOOT:
1131	{	1106	{

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Comparing Coro/Coro/State.xs (file contents): Revision 1.92 by root, Sun Nov 26 02:16:19 2006 UTC vs. Revision 1.109 by root, Mon Nov 27 18:45:29 2006 UTC

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Comparing Coro/Coro/State.xs (file contents):
Revision 1.92 by root, Sun Nov 26 02:16:19 2006 UTC vs.
Revision 1.109 by root, Mon Nov 27 18:45:29 2006 UTC