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

Comparing Coro/Coro/State.xs (file contents):
Revision 1.98 by root, Sun Nov 26 21:25:53 2006 UTC vs.
Revision 1.119 by root, Sat Dec 2 15:41:28 2006 UTC

…		…
4	#include "perl.h"	4	#include "perl.h"
5	#include "XSUB.h"	5	#include "XSUB.h"
6		6
7	#include "patchlevel.h"	7	#include "patchlevel.h"
8		8
9	#if PERL_VERSION < 6	9	#if USE_VALGRIND
		10	# include <valgrind/valgrind.h>
		11	#endif
		12
		13	/* the maximum number of idle cctx that will be pooled */
		14	#define MAX_IDLE_CCTX 8
		15
		16	#define PERL_VERSION_ATLEAST(a,b,c) \
		17	(PERL_REVISION > (a) \
		18	\|\| (PERL_REVISION == (a) \
		19	&& (PERL_VERSION > (b) \
		20	\|\| (PERL_VERSION == (b) && PERLSUBVERSION >= (c)))))
		21
		22	#if !PERL_VERSION_ATLEAST (5,6,0)
10	# ifndef PL_ppaddr	23	# ifndef PL_ppaddr
11	# define PL_ppaddr ppaddr	24	# define PL_ppaddr ppaddr
12	# endif	25	# endif
13	# ifndef call_sv	26	# ifndef call_sv
14	# define call_sv perl_call_sv	27	# define call_sv perl_call_sv
…		…
52	# ifndef PAGESIZE	65	# ifndef PAGESIZE
53	# define PAGESIZE pagesize	66	# define PAGESIZE pagesize
54	# define BOOT_PAGESIZE pagesize = sysconf (_SC_PAGESIZE)	67	# define BOOT_PAGESIZE pagesize = sysconf (_SC_PAGESIZE)
55	static long pagesize;	68	static long pagesize;
56	# else	69	# else
57	# define BOOT_PAGESIZE	70	# define BOOT_PAGESIZE (void)0
58	# endif	71	# endif
		72	#else
		73	# define PAGESIZE 0
		74	# define BOOT_PAGESIZE (void)0
59	#endif	75	#endif
60		76
61	/* The next macro should declare a variable stacklevel that contains and approximation	77	/* The next macro should declare a variable stacklevel that contains and approximation
62	* to the current C stack pointer. Its property is that it changes with each call	78	* to the current C stack pointer. Its property is that it changes with each call
63	* and should be unique. */	79	* and should be unique. */
64	#define dSTACKLEVEL int stacklevel	80	#define dSTACKLEVEL int stacklevel
65	#define STACKLEVEL ((void *)&stacklevel)	81	#define STACKLEVEL ((void *)&stacklevel)
66		82
67	#define IN_DESTRUCT (PL_main_cv == Nullcv)	83	#define IN_DESTRUCT (PL_main_cv == Nullcv)
		84
		85	#if __GNUC__ >= 3
		86	# define attribute(x) __attribute__(x)
		87	#else
		88	# define attribute(x)
		89	#endif
		90
		91	#define NOINLINE attribute ((noinline))
68		92
69	#include "CoroAPI.h"	93	#include "CoroAPI.h"
70		94
71	#define TRANSFER_SET_STACKLEVEL 0x8bfbfbfb /* magic cookie */	95	#define TRANSFER_SET_STACKLEVEL 0x8bfbfbfb /* magic cookie */
72		96
…		…
82	static struct CoroAPI coroapi;	106	static struct CoroAPI coroapi;
83	static AV main_mainstack; / used to differentiate between $main and others */	107	static AV main_mainstack; / used to differentiate between $main and others */
84	static HV coro_state_stash, coro_stash;	108	static HV coro_state_stash, coro_stash;
85	static SV coro_mortal; / will be freed after next transfer */	109	static SV coro_mortal; / will be freed after next transfer */
86		110
		111	static struct coro_cctx *cctx_first;
		112	static int cctx_count, cctx_idle;
		113
87	/* this is a structure representing a c-level coroutine */	114	/* this is a structure representing a c-level coroutine */
88	typedef struct coro_stack {	115	typedef struct coro_cctx {
89	struct coro_stack *next;	116	struct coro_cctx *next;
90		117
91	/* the stack */	118	/* the stack */
92	void *sptr;	119	void *sptr;
93	long ssize; /* positive == mmap, otherwise malloc */	120	long ssize; /* positive == mmap, otherwise malloc */
94		121
95	/* cpu state */	122	/* cpu state */
96	void idle_sp; / sp of top-level transfer/schedule/cede call */	123	void idle_sp; / sp of top-level transfer/schedule/cede call */
97	JMPENV *top_env;	124	JMPENV *top_env;
98	coro_context cctx;	125	coro_context cctx;
99	} coro_stack;	126
		127	int inuse;
		128
		129	#if USE_VALGRIND
		130	int valgrind_id;
		131	#endif
		132	} coro_cctx;
		133
		134	enum {
		135	CF_RUNNING = 0x0001, /* coroutine is running */
		136	CF_READY = 0x0002, /* coroutine is ready */
		137	CF_NEW = 0x0004, /* ahs never been switched to */
		138	};
100		139
101	/* this is a structure representing a perl-level coroutine */	140	/* this is a structure representing a perl-level coroutine */
102	struct coro {	141	struct coro {
103	/* the c coroutine allocated to this perl coroutine, if any */	142	/* the c coroutine allocated to this perl coroutine, if any */
104	coro_stack *stack;	143	coro_cctx *cctx;
105		144
106	/* data associated with this coroutine (initial args) */	145	/* data associated with this coroutine (initial args) */
107	AV *args;	146	AV *args;
108	int refcnt;	147	int refcnt;
		148	int flags;
109		149
110	/* optionally saved, might be zero */	150	/* optionally saved, might be zero */
111	AV *defav;	151	AV *defav;
112	SV *defsv;	152	SV *defsv;
113	SV *errsv;	153	SV *errsv;
114		154
115	/* saved global state not related to stacks */	155	#define VAR(name,type) type name;
116	U8 dowarn;	156	# include "state.h"
117	I32 in_eval;	157	#undef VAR
118
119	/* the stacks and related info (callchain etc..) */
120	PERL_SI *curstackinfo;
121	AV *curstack;
122	AV *mainstack;
123	SV **stack_sp;
124	OP *op;
125	SV **curpad;
126	AV *comppad;
127	CV *compcv;
128	SV **stack_base;
129	SV **stack_max;
130	SV **tmps_stack;
131	I32 tmps_floor;
132	I32 tmps_ix;
133	I32 tmps_max;
134	I32 *markstack;
135	I32 *markstack_ptr;
136	I32 *markstack_max;
137	I32 *scopestack;
138	I32 scopestack_ix;
139	I32 scopestack_max;
140	ANY *savestack;
141	I32 savestack_ix;
142	I32 savestack_max;
143	OP **retstack;
144	I32 retstack_ix;
145	I32 retstack_max;
146	PMOP *curpm;
147	COP *curcop;
148		158
149	/* coro process data */	159	/* coro process data */
150	int prio;	160	int prio;
151	};	161	};
152		162
…		…
159	AV *padlist = CvPADLIST (cv);	169	AV *padlist = CvPADLIST (cv);
160	AV newpadlist, newpad;	170	AV newpadlist, newpad;
161		171
162	newpadlist = newAV ();	172	newpadlist = newAV ();
163	AvREAL_off (newpadlist);	173	AvREAL_off (newpadlist);
164	#if PERL_VERSION < 9	174	#if PERL_VERSION_ATLEAST (5,9,0)
		175	Perl_pad_push (aTHX_ padlist, AvFILLp (padlist) + 1);
		176	#else
165	Perl_pad_push (aTHX_ padlist, AvFILLp (padlist) + 1, 1);	177	Perl_pad_push (aTHX_ padlist, AvFILLp (padlist) + 1, 1);
166	#else
167	Perl_pad_push (aTHX_ padlist, AvFILLp (padlist) + 1);
168	#endif	178	#endif
169	newpad = (AV *)AvARRAY (padlist)[AvFILLp (padlist)];	179	newpad = (AV *)AvARRAY (padlist)[AvFILLp (padlist)];
170	--AvFILLp (padlist);	180	--AvFILLp (padlist);
171		181
172	av_store (newpadlist, 0, SvREFCNT_inc (*av_fetch (padlist, 0, FALSE)));	182	av_store (newpadlist, 0, SvREFCNT_inc (*av_fetch (padlist, 0, FALSE)));
…		…
216		226
217	#define PERL_MAGIC_coro PERL_MAGIC_ext	227	#define PERL_MAGIC_coro PERL_MAGIC_ext
218		228
219	static MGVTBL vtbl_coro = {0, 0, 0, 0, coro_cv_free};	229	static MGVTBL vtbl_coro = {0, 0, 0, 0, coro_cv_free};
220		230
		231	#define CORO_MAGIC(cv) \
		232	SvMAGIC (cv) \
		233	? SvMAGIC (cv)->mg_type == PERL_MAGIC_coro \
		234	? SvMAGIC (cv) \
		235	: mg_find ((SV *)cv, PERL_MAGIC_coro) \
		236	: 0
		237
221	/* the next two functions merely cache the padlists */	238	/* the next two functions merely cache the padlists */
222	static void	239	static void
223	get_padlist (CV *cv)	240	get_padlist (CV *cv)
224	{	241	{
225	MAGIC mg = mg_find ((SV )cv, PERL_MAGIC_coro);	242	MAGIC *mg = CORO_MAGIC (cv);
		243	AV *av;
226		244
227	if (mg && AvFILLp ((AV *)mg->mg_obj) >= 0)	245	if (mg && AvFILLp ((av = (AV *)mg->mg_obj)) >= 0)
228	CvPADLIST (cv) = (AV )av_pop ((AV )mg->mg_obj);	246	CvPADLIST (cv) = (AV *)AvARRAY (av)[AvFILLp (av)--];
229	else	247	else
230	{	248	{
231	#if 0	249	#if 0
232	/* this is probably cleaner, but also slower? */	250	/* this is probably cleaner, but also slower? */
233	CV *cp = Perl_cv_clone (cv);	251	CV *cp = Perl_cv_clone (cv);
…		…
241	}	259	}
242		260
243	static void	261	static void
244	put_padlist (CV *cv)	262	put_padlist (CV *cv)
245	{	263	{
246	MAGIC mg = mg_find ((SV )cv, PERL_MAGIC_coro);	264	MAGIC *mg = CORO_MAGIC (cv);
		265	AV *av;
247		266
248	if (!mg)	267	if (!mg)
249	{	268	{
250	sv_magic ((SV *)cv, 0, PERL_MAGIC_coro, 0, 0);	269	sv_magic ((SV *)cv, 0, PERL_MAGIC_coro, 0, 0);
251	mg = mg_find ((SV *)cv, PERL_MAGIC_coro);	270	mg = mg_find ((SV *)cv, PERL_MAGIC_coro);
252	mg->mg_virtual = &vtbl_coro;	271	mg->mg_virtual = &vtbl_coro;
253	mg->mg_obj = (SV *)newAV ();	272	mg->mg_obj = (SV *)newAV ();
254	}	273	}
255		274
256	av_push ((AV )mg->mg_obj, (SV )CvPADLIST (cv));	275	av = (AV *)mg->mg_obj;
		276
		277	if (AvFILLp (av) >= AvMAX (av))
		278	av_extend (av, AvMAX (av) + 1);
		279
		280	AvARRAY (av)[++AvFILLp (av)] = (SV *)CvPADLIST (cv);
257	}	281	}
258		282
259	#define SB do {	283	#define SB do {
260	#define SE } while (0)	284	#define SE } while (0)
261		285
262	#define LOAD(state) load_state((state));	286	#define LOAD(state) load_state ((state))
263	#define SAVE(state,flags) save_state((state),(flags));	287	#define SAVE(state,flags) save_state ((state),(flags))
264		288
265	#define REPLACE_SV(sv,val) SB SvREFCNT_dec(sv); (sv) = (val); (val) = 0; SE	289	#define REPLACE_SV(sv,val) SB SvREFCNT_dec (sv); (sv) = (val); (val) = 0; SE
266		290
267	static void	291	static void
268	load_state(Coro__State c)	292	load_state (Coro__State c)
269	{	293	{
270	PL_dowarn = c->dowarn;	294	#define VAR(name,type) PL_ ## name = c->name;
271	PL_in_eval = c->in_eval;	295	# include "state.h"
272		296	#undef VAR
273	PL_curstackinfo = c->curstackinfo;
274	PL_curstack = c->curstack;
275	PL_mainstack = c->mainstack;
276	PL_stack_sp = c->stack_sp;
277	PL_op = c->op;
278	PL_curpad = c->curpad;
279	PL_comppad = c->comppad;
280	PL_compcv = c->compcv;
281	PL_stack_base = c->stack_base;
282	PL_stack_max = c->stack_max;
283	PL_tmps_stack = c->tmps_stack;
284	PL_tmps_floor = c->tmps_floor;
285	PL_tmps_ix = c->tmps_ix;
286	PL_tmps_max = c->tmps_max;
287	PL_markstack = c->markstack;
288	PL_markstack_ptr = c->markstack_ptr;
289	PL_markstack_max = c->markstack_max;
290	PL_scopestack = c->scopestack;
291	PL_scopestack_ix = c->scopestack_ix;
292	PL_scopestack_max = c->scopestack_max;
293	PL_savestack = c->savestack;
294	PL_savestack_ix = c->savestack_ix;
295	PL_savestack_max = c->savestack_max;
296	#if PERL_VERSION < 9
297	PL_retstack = c->retstack;
298	PL_retstack_ix = c->retstack_ix;
299	PL_retstack_max = c->retstack_max;
300	#endif
301	PL_curpm = c->curpm;
302	PL_curcop = c->curcop;
303		297
304	if (c->defav) REPLACE_SV (GvAV (PL_defgv), c->defav);	298	if (c->defav) REPLACE_SV (GvAV (PL_defgv), c->defav);
305	if (c->defsv) REPLACE_SV (DEFSV , c->defsv);	299	if (c->defsv) REPLACE_SV (DEFSV , c->defsv);
306	if (c->errsv) REPLACE_SV (ERRSV , c->errsv);	300	if (c->errsv) REPLACE_SV (ERRSV , c->errsv);
307		301
…		…
310	CV *cv;	304	CV *cv;
311		305
312	/* now do the ugly restore mess */	306	/* now do the ugly restore mess */
313	while ((cv = (CV *)POPs))	307	while ((cv = (CV *)POPs))
314	{	308	{
315	AV padlist = (AV )POPs;
316
317	if (padlist)
318	{
319	put_padlist (cv); /* mark this padlist as available */	309	put_padlist (cv); /* mark this padlist as available */
320	CvPADLIST(cv) = padlist;	310	CvDEPTH (cv) = PTR2IV (POPs);
321	}	311	CvPADLIST (cv) = (AV *)POPs;
322
323	++CvDEPTH(cv);
324	}	312	}
325		313
326	PUTBACK;	314	PUTBACK;
327	}	315	}
328	}	316	}
329		317
330	static void	318	static void
331	save_state(Coro__State c, int flags)	319	save_state (Coro__State c, int flags)
332	{	320	{
333	{	321	{
334	dSP;	322	dSP;
335	I32 cxix = cxstack_ix;	323	I32 cxix = cxstack_ix;
336	PERL_CONTEXT *ccstk = cxstack;	324	PERL_CONTEXT *ccstk = cxstack;
…		…
347	{	335	{
348	while (cxix >= 0)	336	while (cxix >= 0)
349	{	337	{
350	PERL_CONTEXT *cx = &ccstk[cxix--];	338	PERL_CONTEXT *cx = &ccstk[cxix--];
351		339
352	if (CxTYPE(cx) == CXt_SUB)	340	if (CxTYPE (cx) == CXt_SUB)
353	{	341	{
354	CV *cv = cx->blk_sub.cv;	342	CV *cv = cx->blk_sub.cv;
		343
355	if (CvDEPTH(cv))	344	if (CvDEPTH (cv))
356	{	345	{
357	EXTEND (SP, CvDEPTH(cv)*2);	346	EXTEND (SP, 3);
358		347
359	while (--CvDEPTH(cv))
360	{
361	/* this tells the restore code to increment CvDEPTH */
362	PUSHs (Nullsv);
363	PUSHs ((SV *)cv);
364	}
365
366	PUSHs ((SV *)CvPADLIST(cv));	348	PUSHs ((SV *)CvPADLIST (cv));
		349	PUSHs (INT2PTR (SV *, CvDEPTH (cv)));
367	PUSHs ((SV *)cv);	350	PUSHs ((SV *)cv);
368		351
		352	CvDEPTH (cv) = 0;
369	get_padlist (cv);	353	get_padlist (cv);
370	}	354	}
371	}	355	}
372	#ifdef CXt_FORMAT	356	#ifdef CXt_FORMAT
373	else if (CxTYPE(cx) == CXt_FORMAT)	357	else if (CxTYPE (cx) == CXt_FORMAT)
374	{	358	{
375	/* I never used formats, so how should I know how these are implemented? */	359	/* I never used formats, so how should I know how these are implemented? */
376	/* my bold guess is as a simple, plain sub... */	360	/* my bold guess is as a simple, plain sub... */
377	croak ("CXt_FORMAT not yet handled. Don't switch coroutines from within formats");	361	croak ("CXt_FORMAT not yet handled. Don't switch coroutines from within formats");
378	}	362	}
…		…
392		376
393	c->defav = flags & TRANSFER_SAVE_DEFAV ? (AV *)SvREFCNT_inc (GvAV (PL_defgv)) : 0;	377	c->defav = flags & TRANSFER_SAVE_DEFAV ? (AV *)SvREFCNT_inc (GvAV (PL_defgv)) : 0;
394	c->defsv = flags & TRANSFER_SAVE_DEFSV ? SvREFCNT_inc (DEFSV) : 0;	378	c->defsv = flags & TRANSFER_SAVE_DEFSV ? SvREFCNT_inc (DEFSV) : 0;
395	c->errsv = flags & TRANSFER_SAVE_ERRSV ? SvREFCNT_inc (ERRSV) : 0;	379	c->errsv = flags & TRANSFER_SAVE_ERRSV ? SvREFCNT_inc (ERRSV) : 0;
396		380
397	c->dowarn = PL_dowarn;	381	#define VAR(name,type)c->name = PL_ ## name;
398	c->in_eval = PL_in_eval;	382	# include "state.h"
399		383	#undef VAR
400	c->curstackinfo = PL_curstackinfo;
401	c->curstack = PL_curstack;
402	c->mainstack = PL_mainstack;
403	c->stack_sp = PL_stack_sp;
404	c->op = PL_op;
405	c->curpad = PL_curpad;
406	c->comppad = PL_comppad;
407	c->compcv = PL_compcv;
408	c->stack_base = PL_stack_base;
409	c->stack_max = PL_stack_max;
410	c->tmps_stack = PL_tmps_stack;
411	c->tmps_floor = PL_tmps_floor;
412	c->tmps_ix = PL_tmps_ix;
413	c->tmps_max = PL_tmps_max;
414	c->markstack = PL_markstack;
415	c->markstack_ptr = PL_markstack_ptr;
416	c->markstack_max = PL_markstack_max;
417	c->scopestack = PL_scopestack;
418	c->scopestack_ix = PL_scopestack_ix;
419	c->scopestack_max = PL_scopestack_max;
420	c->savestack = PL_savestack;
421	c->savestack_ix = PL_savestack_ix;
422	c->savestack_max = PL_savestack_max;
423	#if PERL_VERSION < 9
424	c->retstack = PL_retstack;
425	c->retstack_ix = PL_retstack_ix;
426	c->retstack_max = PL_retstack_max;
427	#endif
428	c->curpm = PL_curpm;
429	c->curcop = PL_curcop;
430	}	384	}
431		385
432	/*	386	/*
433	* allocate various perl stacks. This is an exact copy	387	* allocate various perl stacks. This is an exact copy
434	* of perl.c:init_stacks, except that it uses less memory	388	* of perl.c:init_stacks, except that it uses less memory
…		…
436	* not usually need a lot of stackspace.	390	* not usually need a lot of stackspace.
437	*/	391	*/
438	static void	392	static void
439	coro_init_stacks ()	393	coro_init_stacks ()
440	{	394	{
441	LOCK;
442
443	PL_curstackinfo = new_stackinfo(96, 1024/sizeof(PERL_CONTEXT) - 1);	395	PL_curstackinfo = new_stackinfo(128, 1024/sizeof(PERL_CONTEXT));
444	PL_curstackinfo->si_type = PERLSI_MAIN;	396	PL_curstackinfo->si_type = PERLSI_MAIN;
445	PL_curstack = PL_curstackinfo->si_stack;	397	PL_curstack = PL_curstackinfo->si_stack;
446	PL_mainstack = PL_curstack; /* remember in case we switch stacks */	398	PL_mainstack = PL_curstack; /* remember in case we switch stacks */
447		399
448	PL_stack_base = AvARRAY(PL_curstack);	400	PL_stack_base = AvARRAY(PL_curstack);
449	PL_stack_sp = PL_stack_base;	401	PL_stack_sp = PL_stack_base;
450	PL_stack_max = PL_stack_base + AvMAX(PL_curstack);	402	PL_stack_max = PL_stack_base + AvMAX(PL_curstack);
451		403
452	New(50,PL_tmps_stack,96,SV*);	404	New(50,PL_tmps_stack,128,SV*);
453	PL_tmps_floor = -1;	405	PL_tmps_floor = -1;
454	PL_tmps_ix = -1;	406	PL_tmps_ix = -1;
455	PL_tmps_max = 96;	407	PL_tmps_max = 128;
456		408
457	New(54,PL_markstack,16,I32);	409	New(54,PL_markstack,32,I32);
458	PL_markstack_ptr = PL_markstack;	410	PL_markstack_ptr = PL_markstack;
459	PL_markstack_max = PL_markstack + 16;	411	PL_markstack_max = PL_markstack + 32;
460		412
461	#ifdef SET_MARK_OFFSET	413	#ifdef SET_MARK_OFFSET
462	SET_MARK_OFFSET;	414	SET_MARK_OFFSET;
463	#endif	415	#endif
464		416
465	New(54,PL_scopestack,16,I32);	417	New(54,PL_scopestack,32,I32);
466	PL_scopestack_ix = 0;	418	PL_scopestack_ix = 0;
467	PL_scopestack_max = 16;	419	PL_scopestack_max = 32;
468		420
469	New(54,PL_savestack,96,ANY);	421	New(54,PL_savestack,64,ANY);
470	PL_savestack_ix = 0;	422	PL_savestack_ix = 0;
471	PL_savestack_max = 96;	423	PL_savestack_max = 64;
472		424
473	#if PERL_VERSION < 9	425	#if !PERL_VERSION_ATLEAST (5,9,0)
474	New(54,PL_retstack,8,OP*);	426	New(54,PL_retstack,16,OP*);
475	PL_retstack_ix = 0;	427	PL_retstack_ix = 0;
476	PL_retstack_max = 8;	428	PL_retstack_max = 16;
477	#endif	429	#endif
478
479	UNLOCK;
480	}	430	}
481		431
482	/*	432	/*
483	* destroy the stacks, the callchain etc...	433	* destroy the stacks, the callchain etc...
484	*/	434	*/
485	static void	435	static void
486	destroy_stacks()	436	coro_destroy_stacks ()
487	{	437	{
488	if (!IN_DESTRUCT)	438	if (!IN_DESTRUCT)
489	{	439	{
490	/* is this ugly, I ask? */	440	/* is this ugly, I ask? */
491	LEAVE_SCOPE (0);	441	LEAVE_SCOPE (0);
…		…
522		472
523	Safefree (PL_tmps_stack);	473	Safefree (PL_tmps_stack);
524	Safefree (PL_markstack);	474	Safefree (PL_markstack);
525	Safefree (PL_scopestack);	475	Safefree (PL_scopestack);
526	Safefree (PL_savestack);	476	Safefree (PL_savestack);
527	#if PERL_VERSION < 9	477	#if !PERL_VERSION_ATLEAST (5,9,0)
528	Safefree (PL_retstack);	478	Safefree (PL_retstack);
529	#endif	479	#endif
530	}	480	}
531		481
532	static void	482	static void
533	setup_coro (struct coro *coro)	483	setup_coro (struct coro *coro)
534	{	484	{
535	/*	485	/*
536	* emulate part of the perl startup here.	486	* emulate part of the perl startup here.
537	*/	487	*/
538	dTHX;
539	dSP;
540	UNOP myop;
541	SV sub_init = (SV )get_cv ("Coro::State::coro_init", FALSE);
542		488
543	coro_init_stacks ();	489	coro_init_stacks ();
544	/PL_curcop = 0;/	490
545	/PL_in_eval = PL_in_eval;/ /* inherit */	491	PL_curcop = &PL_compiling;
		492	PL_in_eval = EVAL_NULL;
		493	PL_curpm = 0;
		494	PL_localizing = 0;
		495	PL_dirty = 0;
		496	PL_restartop = 0;
		497
		498	{
		499	dSP;
		500	LOGOP myop;
		501
		502	/* I have no idea why this is needed, but it is */
		503	PUSHMARK (SP);
		504
546	SvREFCNT_dec (GvAV (PL_defgv));	505	SvREFCNT_dec (GvAV (PL_defgv));
547	GvAV (PL_defgv) = coro->args; coro->args = 0;	506	GvAV (PL_defgv) = coro->args; coro->args = 0;
548		507
549	SPAGAIN;
550
551	Zero (&myop, 1, UNOP);	508	Zero (&myop, 1, LOGOP);
552	myop.op_next = Nullop;	509	myop.op_next = Nullop;
553	myop.op_flags = OPf_WANT_VOID;	510	myop.op_flags = OPf_WANT_VOID;
554		511
555	PL_op = (OP *)&myop;	512	PL_op = (OP *)&myop;
556		513
557	PUSHMARK(SP);	514	PUSHMARK (SP);
558	XPUSHs (sub_init);	515	XPUSHs ((SV *)get_cv ("Coro::State::_coro_init", FALSE));
559	PUTBACK;	516	PUTBACK;
560	PL_op = PL_ppaddr[OP_ENTERSUB](aTHX);	517	PL_op = PL_ppaddr[OP_ENTERSUB](aTHX);
561	SPAGAIN;	518	SPAGAIN;
		519	}
562		520
563	ENTER; /* necessary e.g. for dounwind */	521	ENTER; /* necessary e.g. for dounwind */
564	}	522	}
565		523
566	static void	524	static void
…		…
571	SvREFCNT_dec (coro_mortal);	529	SvREFCNT_dec (coro_mortal);
572	coro_mortal = 0;	530	coro_mortal = 0;
573	}	531	}
574	}	532	}
575		533
		534	static void NOINLINE
		535	prepare_cctx (coro_cctx *cctx)
		536	{
		537	dSP;
		538	LOGOP myop;
		539
		540	Zero (&myop, 1, LOGOP);
		541	myop.op_next = PL_op;
		542	myop.op_flags = OPf_WANT_VOID;
		543
		544	sv_setiv (get_sv ("Coro::State::_cctx", FALSE), PTR2IV (cctx));
		545
		546	PUSHMARK (SP);
		547	XPUSHs ((SV *)get_cv ("Coro::State::_cctx_init", FALSE));
		548	PUTBACK;
		549	PL_restartop = PL_ppaddr[OP_ENTERSUB](aTHX);
		550	SPAGAIN;
		551	}
		552
576	static void	553	static void
577	coro_run (void *arg)	554	coro_run (void *arg)
578	{	555	{
		556	/* coro_run is the alternative epilogue of transfer() */
		557	UNLOCK;
		558
579	/*	559	/*
580	* this is a _very_ stripped down perl interpreter ;)	560	* this is a _very_ stripped down perl interpreter ;)
581	*/	561	*/
582	dTHX;
583	int ret;
584
585	UNLOCK;
586
587	PL_top_env = &PL_start_env;	562	PL_top_env = &PL_start_env;
588		563
589	sv_setiv (get_sv ("Coro::State::cctx_stack", FALSE), PTR2IV ((coro_stack *)arg));	564	/* inject call to cctx_init */
590	sv_setiv (get_sv ("Coro::State::cctx_restartop", FALSE), PTR2IV (PL_op));	565	prepare_cctx ((coro_cctx *)arg);
591
592	/* continue at cctx_init, without entersub */
593	PL_restartop = CvSTART (get_cv ("Coro::State::cctx_init", FALSE));
594		566
595	/* somebody will hit me for both perl_run and PL_restartop */	567	/* somebody will hit me for both perl_run and PL_restartop */
596	ret = perl_run (PERL_GET_CONTEXT);	568	perl_run (PL_curinterp);
597	printf ("ret %d\n", ret);//D
598		569
599	fputs ("FATAL: C coroutine fell over the edge of the world, aborting.\n", stderr);	570	fputs ("FATAL: C coroutine fell over the edge of the world, aborting. Did you call exit in a coroutine?\n", stderr);
600	abort ();	571	abort ();
601	}	572	}
602		573
603	static coro_stack *	574	static coro_cctx *
604	stack_new ()	575	cctx_new ()
605	{	576	{
606	coro_stack *stack;	577	coro_cctx *cctx;
607		578
		579	++cctx_count;
		580
608	New (0, stack, 1, coro_stack);	581	New (0, cctx, 1, coro_cctx);
609		582
610	#if HAVE_MMAP	583	#if HAVE_MMAP
611		584
612	stack->ssize = ((STACKSIZE * sizeof (long) + PAGESIZE - 1) / PAGESIZE + STACKGUARD) * PAGESIZE;	585	cctx->ssize = ((STACKSIZE * sizeof (long) + PAGESIZE - 1) / PAGESIZE + STACKGUARD) * PAGESIZE;
613	/* mmap suppsedly does allocate-on-write for us */	586	/* mmap suppsedly does allocate-on-write for us */
614	stack->sptr = mmap (0, stack->ssize, PROT_EXEC\|PROT_READ\|PROT_WRITE, MAP_PRIVATE\|MAP_ANONYMOUS, 0, 0);	587	cctx->sptr = mmap (0, cctx->ssize, PROT_EXEC\|PROT_READ\|PROT_WRITE, MAP_PRIVATE\|MAP_ANONYMOUS, 0, 0);
615		588
616	if (stack->sptr == (void *)-1)	589	if (cctx->sptr == (void *)-1)
617	{	590	{
618	perror ("FATAL: unable to mmap stack for coroutine");	591	perror ("FATAL: unable to mmap stack for coroutine");
619	_exit (EXIT_FAILURE);	592	_exit (EXIT_FAILURE);
620	}	593	}
621		594
622	# if STACKGUARD	595	# if STACKGUARD
623	mprotect (stack->sptr, STACKGUARD * PAGESIZE, PROT_NONE);	596	mprotect (cctx->sptr, STACKGUARD * PAGESIZE, PROT_NONE);
624	# endif	597	# endif
625		598
626	#else	599	#else
627		600
628	stack->ssize = STACKSIZE * (long)sizeof (long);	601	cctx->ssize = STACKSIZE * (long)sizeof (long);
629	New (0, stack->sptr, STACKSIZE, long);	602	New (0, cctx->sptr, STACKSIZE, long);
630		603
631	if (!stack->sptr)	604	if (!cctx->sptr)
632	{	605	{
633	perror (stderr, "FATAL: unable to malloc stack for coroutine");	606	perror ("FATAL: unable to malloc stack for coroutine");
634	_exit (EXIT_FAILURE);	607	_exit (EXIT_FAILURE);
635	}	608	}
636		609
637	#endif	610	#endif
638		611
		612	#if USE_VALGRIND
		613	cctx->valgrind_id = VALGRIND_STACK_REGISTER (
		614	STACKGUARD * PAGESIZE + (char *)cctx->sptr,
		615	cctx->ssize + (char *)cctx->sptr
		616	);
		617	#endif
		618
639	coro_create (&stack->cctx, coro_run, (void *)stack, stack->sptr, stack->ssize);	619	coro_create (&cctx->cctx, coro_run, (void *)cctx, cctx->sptr, cctx->ssize);
640		620
641	return stack;	621	return cctx;
642	}	622	}
643		623
644	static void	624	static void
645	stack_free (coro_stack *stack)	625	cctx_destroy (coro_cctx *cctx)
646	{	626	{
647	if (!stack)	627	if (!cctx)
648	return;	628	return;
649		629
		630	--cctx_count;
		631
		632	#if USE_VALGRIND
		633	VALGRIND_STACK_DEREGISTER (cctx->valgrind_id);
		634	#endif
		635
650	#if HAVE_MMAP	636	#if HAVE_MMAP
651	munmap (stack->sptr, stack->ssize);	637	munmap (cctx->sptr, cctx->ssize);
652	#else	638	#else
653	Safefree (stack->sptr);	639	Safefree (cctx->sptr);
654	#endif	640	#endif
655		641
656	Safefree (stack);	642	Safefree (cctx);
657	}	643	}
658		644
659	static coro_stack *stack_first;
660
661	static coro_stack *	645	static coro_cctx *
662	stack_get ()	646	cctx_get ()
663	{	647	{
664	coro_stack *stack;	648	coro_cctx *cctx;
665		649
666	if (stack_first)	650	if (cctx_first)
667	{	651	{
668	stack = stack_first;	652	cctx = cctx_first;
669	stack_first = stack->next;	653	cctx_first = cctx->next;
		654	--cctx_idle;
670	}	655	}
671	else	656	else
672	{	657	{
673	stack = stack_new ();	658	cctx = cctx_new ();
674	PL_op = PL_op->op_next;	659	PL_op = PL_op->op_next;
675	}	660	}
676		661
677	return stack;	662	return cctx;
678	}	663	}
679		664
680	static void	665	static void
681	stack_put (coro_stack *stack)	666	cctx_put (coro_cctx *cctx)
682	{	667	{
683	stack->next = stack_first;	668	/* free another cctx if overlimit */
684	stack_first = stack;	669	if (cctx_idle >= MAX_IDLE_CCTX)
		670	{
		671	coro_cctx *first = cctx_first;
		672	cctx_first = first->next;
		673	--cctx_idle;
		674
		675	assert (!first->inuse);
		676	cctx_destroy (first);
		677	}
		678
		679	++cctx_idle;
		680	cctx->next = cctx_first;
		681	cctx_first = cctx;
685	}	682	}
686		683
687	/* never call directly, always through the coro_state_transfer global variable */	684	/* never call directly, always through the coro_state_transfer global variable */
688	static void	685	static void NOINLINE
689	transfer_impl (struct coro prev, struct coro next, int flags)	686	transfer (struct coro prev, struct coro next, int flags)
690	{	687	{
691	dSTACKLEVEL;	688	dSTACKLEVEL;
692		689
693	/* sometimes transfer is only called to set idle_sp */	690	/* sometimes transfer is only called to set idle_sp */
694	if (flags == TRANSFER_SET_STACKLEVEL)	691	if (flags == TRANSFER_SET_STACKLEVEL)
695	((coro_stack *)prev)->idle_sp = STACKLEVEL;	692	((coro_cctx *)prev)->idle_sp = STACKLEVEL;
696	else if (prev != next)	693	else if (prev != next)
697	{	694	{
698	coro_stack *prev__stack;	695	coro_cctx *prev__cctx;
		696
		697	if (prev->flags & CF_NEW)
		698	{
		699	/* create a new empty context */
		700	Newz (0, prev->cctx, 1, coro_cctx);
		701	prev->cctx->inuse = 1;
		702	prev->flags &= ~CF_NEW;
		703	prev->flags \|= CF_RUNNING;
		704	}
		705
		706	/TODO: must not croak here /
		707	if (!prev->flags & CF_RUNNING)
		708	croak ("Coro::State::transfer called with non-running prev Coro::State, but can only transfer from running states");
		709
		710	if (next->flags & CF_RUNNING)
		711	croak ("Coro::State::transfer called with running next Coro::State, but can only transfer to inactive states");
		712
		713	prev->flags &= ~CF_RUNNING;
		714	next->flags \|= CF_RUNNING;
699		715
700	LOCK;	716	LOCK;
701		717
702	if (next->mainstack)	718	if (next->flags & CF_NEW)
		719	{
		720	/* need to start coroutine */
		721	next->flags &= ~CF_NEW;
		722	/* first get rid of the old state */
		723	SAVE (prev, -1);
		724	/* setup coroutine call */
		725	setup_coro (next);
		726	/* need a new stack */
		727	assert (!next->stack);
		728	}
		729	else
703	{	730	{
704	/* coroutine already started */	731	/* coroutine already started */
705	SAVE (prev, flags);	732	SAVE (prev, flags);
706	LOAD (next);	733	LOAD (next);
707	}	734	}
708	else	735
		736	prev__cctx = prev->cctx;
		737
		738	/* possibly "free" the cctx */
		739	if (prev__cctx->idle_sp == STACKLEVEL)
709	{	740	{
710	/* need to start coroutine */	741	/* I assume that STACKLEVEL is a stronger indicator than PL_top_env changes */
711	/* first get rid of the old state */	742	assert (PL_top_env == prev__cctx->top_env);
712	SAVE (prev, -1);	743
713	/* setup coroutine call */	744	prev->cctx = 0;
714	setup_coro (next);	745
715	/* need a stack */	746	cctx_put (prev__cctx);
716	next->stack = 0;	747	prev__cctx->inuse = 0;
717	}	748	}
718		749
719	if (!prev->stack)	750	if (!next->cctx)
720	/* create a new empty context */
721	Newz (0, prev->stack, 1, coro_stack);
722
723	prev__stack = prev->stack;
724
725	/* possibly "free" the stack */
726	if (prev__stack->idle_sp == STACKLEVEL)
727	{	751	{
728	stack_put (prev__stack);	752	next->cctx = cctx_get ();
729	prev->stack = 0;	753	assert (!next->cctx->inuse);
		754	next->cctx->inuse = 1;
730	}	755	}
731		756
732	if (!next->stack)
733	next->stack = stack_get ();
734
735	if (prev__stack != next->stack)	757	if (prev__cctx != next->cctx)
736	{	758	{
737	prev__stack->top_env = PL_top_env;	759	prev__cctx->top_env = PL_top_env;
738	PL_top_env = next->stack->top_env;	760	PL_top_env = next->cctx->top_env;
739	coro_transfer (&prev__stack->cctx, &next->stack->cctx);	761	coro_transfer (&prev__cctx->cctx, &next->cctx->cctx);
740	}	762	}
741		763
742	free_coro_mortal ();	764	free_coro_mortal ();
743		765
744	UNLOCK;	766	UNLOCK;
745	}	767	}
746	}	768	}
747
748	/* use this function pointer to call the above function */
749	/* this is done to increase chances of the compiler not inlining the call */
750	/* not static to make it even harder for the compiler (and theoretically impossible in most cases */
751	void (coro_state_transfer)(struct coro prev, struct coro *next, int flags) = transfer_impl;
752		769
753	struct transfer_args	770	struct transfer_args
754	{	771	{
755	struct coro prev, next;	772	struct coro prev, next;
756	int flags;	773	int flags;
757	};	774	};
758		775
759	#define TRANSFER(ta) coro_state_transfer ((ta).prev, (ta).next, (ta).flags)	776	#define TRANSFER(ta) transfer ((ta).prev, (ta).next, (ta).flags)
760		777
761	static void	778	static void
762	coro_state_destroy (struct coro *coro)	779	coro_state_destroy (struct coro *coro)
763	{	780	{
764	if (coro->refcnt--)	781	if (coro->refcnt--)
…		…
766		783
767	if (coro->mainstack && coro->mainstack != main_mainstack)	784	if (coro->mainstack && coro->mainstack != main_mainstack)
768	{	785	{
769	struct coro temp;	786	struct coro temp;
770		787
		788	if (coro->flags & CF_RUNNING)
		789	croak ("FATAL: tried to destroy currently running coroutine");
		790
771	SAVE ((&temp), TRANSFER_SAVE_ALL);	791	SAVE ((&temp), TRANSFER_SAVE_ALL);
772	LOAD (coro);	792	LOAD (coro);
773		793
774	destroy_stacks ();	794	coro_destroy_stacks ();
775		795
776	LOAD ((&temp)); /* this will get rid of defsv etc.. */	796	LOAD ((&temp)); /* this will get rid of defsv etc.. */
777		797
778	coro->mainstack = 0;	798	coro->mainstack = 0;
779	}	799	}
780		800
781	stack_free (coro->stack);	801	cctx_destroy (coro->cctx);
782	SvREFCNT_dec (coro->args);	802	SvREFCNT_dec (coro->args);
783	Safefree (coro);	803	Safefree (coro);
784	}	804	}
785		805
786	static int	806	static int
…		…
802	++coro->refcnt;	822	++coro->refcnt;
803		823
804	return 0;	824	return 0;
805	}	825	}
806		826
807	static MGVTBL coro_state_vtbl = { 0, 0, 0, 0, coro_state_clear, 0, coro_state_dup, 0 };	827	static MGVTBL coro_state_vtbl = {
		828	0, 0, 0, 0,
		829	coro_state_clear,
		830	0,
		831	#ifdef MGf_DUP
		832	coro_state_dup,
		833	#else
		834	# define MGf_DUP 0
		835	#endif
		836	};
808		837
809	static struct coro *	838	static struct coro *
810	SvSTATE (SV *coro)	839	SvSTATE (SV *coro)
811	{	840	{
812	HV *stash;	841	HV *stash;
…		…
837	}	866	}
838		867
839	static void	868	static void
840	api_transfer (SV prev, SV next, int flags)	869	api_transfer (SV prev, SV next, int flags)
841	{	870	{
842	dTHX;
843	struct transfer_args ta;	871	struct transfer_args ta;
844		872
845	prepare_transfer (&ta, prev, next, flags);	873	prepare_transfer (&ta, prev, next, flags);
846	TRANSFER (ta);	874	TRANSFER (ta);
847	}	875	}
…		…
854	#define PRIO_LOW -1	882	#define PRIO_LOW -1
855	#define PRIO_IDLE -3	883	#define PRIO_IDLE -3
856	#define PRIO_MIN -4	884	#define PRIO_MIN -4
857		885
858	/* for Coro.pm */	886	/* for Coro.pm */
859	static GV coro_current, coro_idle;	887	static SV *coro_current;
860	static AV *coro_ready [PRIO_MAX-PRIO_MIN+1];	888	static AV *coro_ready [PRIO_MAX-PRIO_MIN+1];
861	static int coro_nready;	889	static int coro_nready;
862		890
863	static void	891	static void
864	coro_enq (SV *sv)	892	coro_enq (SV *coro_sv)
865	{	893	{
866	int prio;
867
868	if (SvTYPE (sv) != SVt_PVHV)
869	croak ("Coro::ready tried to enqueue something that is not a coroutine");
870
871	prio = SvSTATE (sv)->prio;
872
873	av_push (coro_ready [prio - PRIO_MIN], sv);	894	av_push (coro_ready [SvSTATE (coro_sv)->prio - PRIO_MIN], coro_sv);
874	coro_nready++;	895	coro_nready++;
875	}	896	}
876		897
877	static SV *	898	static SV *
878	coro_deq (int min_prio)	899	coro_deq (int min_prio)
…		…
891	}	912	}
892		913
893	return 0;	914	return 0;
894	}	915	}
895		916
896	static void	917	static int
897	api_ready (SV *coro)	918	api_ready (SV *coro_sv)
898	{	919	{
899	dTHX;	920	struct coro *coro;
900		921
901	if (SvROK (coro))	922	if (SvROK (coro_sv))
902	coro = SvRV (coro);	923	coro_sv = SvRV (coro_sv);
		924
		925	coro = SvSTATE (coro_sv);
		926
		927	if (coro->flags & CF_READY)
		928	return 0;
		929
		930	#if 0 /* this is actually harmless */
		931	if (coro->flags & CF_RUNNING)
		932	croak ("Coro::ready called on currently running coroutine");
		933	#endif
		934
		935	coro->flags \|= CF_READY;
903		936
904	LOCK;	937	LOCK;
905	coro_enq (SvREFCNT_inc (coro));	938	coro_enq (SvREFCNT_inc (coro_sv));
906	UNLOCK;	939	UNLOCK;
		940
		941	return 1;
		942	}
		943
		944	static int
		945	api_is_ready (SV *coro_sv)
		946	{
		947	return !!SvSTATE (coro_sv)->flags & CF_READY;
907	}	948	}
908		949
909	static void	950	static void
910	prepare_schedule (struct transfer_args *ta)	951	prepare_schedule (struct transfer_args *ta)
911	{	952	{
912	SV current, prev, *next;	953	SV prev, next;
913
914	LOCK;
915
916	current = GvSV (coro_current);
917		954
918	for (;;)	955	for (;;)
919	{	956	{
920	LOCK;	957	LOCK;
921
922	next = coro_deq (PRIO_MIN);	958	next = coro_deq (PRIO_MIN);
		959	UNLOCK;
923		960
924	if (next)	961	if (next)
925	break;	962	break;
926		963
927	UNLOCK;
928
929	{	964	{
930	dSP;	965	dSP;
931		966
932	ENTER;	967	ENTER;
933	SAVETMPS;	968	SAVETMPS;
934		969
935	PUSHMARK (SP);	970	PUSHMARK (SP);
936	PUTBACK;	971	PUTBACK;
937	call_sv (GvSV (coro_idle), G_DISCARD);	972	call_sv (get_sv ("Coro::idle", FALSE), G_DISCARD);
938		973
939	FREETMPS;	974	FREETMPS;
940	LEAVE;	975	LEAVE;
941	}	976	}
942	}	977	}
943		978
944	prev = SvRV (current);	979	prev = SvRV (coro_current);
945	SvRV (current) = next;	980	SvRV_set (coro_current, next);
946		981
947	/* free this only after the transfer */	982	/* free this only after the transfer */
		983	LOCK;
948	free_coro_mortal ();	984	free_coro_mortal ();
		985	UNLOCK;
949	coro_mortal = prev;	986	coro_mortal = prev;
950		987
		988	assert (!SvROK(prev));//D
		989	assert (!SvROK(next));//D
		990
951	ta->prev = SvSTATE (prev);	991	ta->prev = SvSTATE (prev);
952	ta->next = SvSTATE (next);	992	ta->next = SvSTATE (next);
953	ta->flags = TRANSFER_SAVE_ALL;	993	ta->flags = TRANSFER_SAVE_ALL;
954		994
955	UNLOCK;	995	assert (ta->flags & CF_READY);
		996	ta->next->flags &= ~CF_READY;
956	}	997	}
957		998
958	static void	999	static void
959	prepare_cede (struct transfer_args *ta)	1000	prepare_cede (struct transfer_args *ta)
960	{	1001	{
961	LOCK;	1002	api_ready (coro_current);
962	coro_enq (SvREFCNT_inc (SvRV (GvSV (coro_current))));
963	UNLOCK;
964		1003
965	prepare_schedule (ta);	1004	prepare_schedule (ta);
966	}	1005	}
967		1006
968	static void	1007	static void
969	api_schedule (void)	1008	api_schedule (void)
970	{	1009	{
971	dTHX;
972	struct transfer_args ta;	1010	struct transfer_args ta;
973		1011
974	prepare_schedule (&ta);	1012	prepare_schedule (&ta);
975	TRANSFER (ta);	1013	TRANSFER (ta);
976	}	1014	}
977		1015
978	static void	1016	static void
979	api_cede (void)	1017	api_cede (void)
980	{	1018	{
981	dTHX;
982	struct transfer_args ta;	1019	struct transfer_args ta;
983		1020
984	prepare_cede (&ta);	1021	prepare_cede (&ta);
985	TRANSFER (ta);	1022	TRANSFER (ta);
986	}	1023	}
…		…
1018	HV *hv;	1055	HV *hv;
1019	int i;	1056	int i;
1020		1057
1021	Newz (0, coro, 1, struct coro);	1058	Newz (0, coro, 1, struct coro);
1022	coro->args = newAV ();	1059	coro->args = newAV ();
		1060	coro->flags = CF_NEW;
1023		1061
1024	hv = newHV ();	1062	hv = newHV ();
1025	sv_magicext ((SV )hv, 0, PERL_MAGIC_ext, &coro_state_vtbl, (char )coro, 0)->mg_flags \|= MGf_DUP;	1063	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));	1064	RETVAL = sv_bless (newRV_noinc ((SV *)hv), gv_stashpv (klass, 1));
1027		1065
1028	for (i = 1; i < items; i++)	1066	for (i = 1; i < items; i++)
1029	av_push (coro->args, newSVsv (ST (i)));	1067	av_push (coro->args, newSVsv (ST (i)));
1030
1031	/coro->mainstack = 0; //actual work is done inside transfer /
1032	/coro->stack = 0;/
1033	}	1068	}
1034	OUTPUT:	1069	OUTPUT:
1035	RETVAL	1070	RETVAL
1036		1071
1037	void	1072	void
1038	_set_stacklevel (...)	1073	_set_stacklevel (...)
1039	ALIAS:	1074	ALIAS:
1040	Coro::State::transfer = 1	1075	Coro::State::transfer = 1
1041	Coro::schedule = 2	1076	Coro::schedule = 2
1042	Coro::cede = 3	1077	Coro::cede = 3
1043	Coro::Cont::yield = 4
1044	CODE:	1078	CODE:
1045	{	1079	{
1046	struct transfer_args ta;	1080	struct transfer_args ta;
1047		1081
1048	switch (ix)	1082	switch (ix)
1049	{	1083	{
1050	case 0:	1084	case 0:
1051	ta.prev = (struct coro )INT2PTR (coro_stack , SvIV (ST (0)));	1085	ta.prev = (struct coro )INT2PTR (coro_cctx , SvIV (ST (0)));
1052	ta.next = 0;	1086	ta.next = 0;
1053	ta.flags = TRANSFER_SET_STACKLEVEL;	1087	ta.flags = TRANSFER_SET_STACKLEVEL;
1054	break;	1088	break;
1055		1089
1056	case 1:	1090	case 1:
1057	if (items != 3)	1091	if (items != 3)
1058	croak ("Coro::State::transfer(prev,next,flags) expects three arguments, not %d", items);	1092	croak ("Coro::State::transfer (prev,next,flags) expects three arguments, not %d", items);
1059		1093
1060	prepare_transfer (&ta, ST (0), ST (1), SvIV (ST (2)));	1094	prepare_transfer (&ta, ST (0), ST (1), SvIV (ST (2)));
1061	break;	1095	break;
1062		1096
1063	case 2:	1097	case 2:
…		…
1065	break;	1099	break;
1066		1100
1067	case 3:	1101	case 3:
1068	prepare_cede (&ta);	1102	prepare_cede (&ta);
1069	break;	1103	break;
1070
1071	case 4:
1072	{
1073	SV *yieldstack;
1074	SV *sv;
1075	AV *defav = GvAV (PL_defgv);
1076
1077	yieldstack = *hv_fetch (
1078	(HV *)SvRV (GvSV (coro_current)),
1079	"yieldstack", sizeof ("yieldstack") - 1,
1080	0
1081	);
1082
1083	/* set up @_ -- ugly */
1084	av_clear (defav);
1085	av_fill (defav, items - 1);
1086	while (items--)
1087	av_store (defav, items, SvREFCNT_inc (ST(items)));
1088
1089	sv = av_pop ((AV *)SvRV (yieldstack));
1090	ta.prev = SvSTATE (av_fetch ((AV )SvRV (sv), 0, 0));
1091	ta.next = SvSTATE (av_fetch ((AV )SvRV (sv), 1, 0));
1092	ta.flags = 0;
1093	SvREFCNT_dec (sv);
1094	}
1095	break;
1096
1097	}	1104	}
1098		1105
1099	TRANSFER (ta);	1106	TRANSFER (ta);
1100	}	1107	}
1101		1108
…		…
1108	sv_unmagic (SvRV (dst), PERL_MAGIC_ext);	1115	sv_unmagic (SvRV (dst), PERL_MAGIC_ext);
1109		1116
1110	++coro_src->refcnt;	1117	++coro_src->refcnt;
1111	sv_magicext (SvRV (dst), 0, PERL_MAGIC_ext, &coro_state_vtbl, (char *)coro_src, 0)->mg_flags \|= MGf_DUP;	1118	sv_magicext (SvRV (dst), 0, PERL_MAGIC_ext, &coro_state_vtbl, (char *)coro_src, 0)->mg_flags \|= MGf_DUP;
1112	}	1119	}
1113
1114	void
1115	_nonlocal_goto (IV nextop)
1116	CODE:
1117	/* uuh, somebody will kill me again for this */
1118	PL_op->op_next = INT2PTR (OP *, nextop);
1119		1120
1120	void	1121	void
1121	_exit (code)	1122	_exit (code)
1122	int code	1123	int code
1123	PROTOTYPE: $	1124	PROTOTYPE: $
1124	CODE:	1125	CODE:
1125	_exit (code);	1126	_exit (code);
1126		1127
		1128	int
		1129	cctx_count ()
		1130	CODE:
		1131	RETVAL = cctx_count;
		1132	OUTPUT:
		1133	RETVAL
		1134
		1135	int
		1136	cctx_idle ()
		1137	CODE:
		1138	RETVAL = cctx_idle;
		1139	OUTPUT:
		1140	RETVAL
		1141
1127	MODULE = Coro::State PACKAGE = Coro	1142	MODULE = Coro::State PACKAGE = Coro
1128		1143
1129	BOOT:	1144	BOOT:
1130	{	1145	{
1131	int i;	1146	int i;
…		…
1137	newCONSTSUB (coro_stash, "PRIO_NORMAL", newSViv (PRIO_NORMAL));	1152	newCONSTSUB (coro_stash, "PRIO_NORMAL", newSViv (PRIO_NORMAL));
1138	newCONSTSUB (coro_stash, "PRIO_LOW", newSViv (PRIO_LOW));	1153	newCONSTSUB (coro_stash, "PRIO_LOW", newSViv (PRIO_LOW));
1139	newCONSTSUB (coro_stash, "PRIO_IDLE", newSViv (PRIO_IDLE));	1154	newCONSTSUB (coro_stash, "PRIO_IDLE", newSViv (PRIO_IDLE));
1140	newCONSTSUB (coro_stash, "PRIO_MIN", newSViv (PRIO_MIN));	1155	newCONSTSUB (coro_stash, "PRIO_MIN", newSViv (PRIO_MIN));
1141		1156
1142	coro_current = gv_fetchpv ("Coro::current", TRUE, SVt_PV);	1157	coro_current = get_sv ("Coro::current", FALSE);
1143	coro_idle = gv_fetchpv ("Coro::idle" , TRUE, SVt_PV);	1158	SvREADONLY_on (coro_current);
1144		1159
1145	for (i = PRIO_MAX - PRIO_MIN + 1; i--; )	1160	for (i = PRIO_MAX - PRIO_MIN + 1; i--; )
1146	coro_ready[i] = newAV ();	1161	coro_ready[i] = newAV ();
1147		1162
1148	{	1163	{
1149	SV *sv = perl_get_sv("Coro::API", 1);	1164	SV *sv = perl_get_sv("Coro::API", 1);
1150		1165
1151	coroapi.schedule = api_schedule;	1166	coroapi.schedule = api_schedule;
1152	coroapi.cede = api_cede;	1167	coroapi.cede = api_cede;
1153	coroapi.ready = api_ready;	1168	coroapi.ready = api_ready;
		1169	coroapi.is_ready = api_is_ready;
1154	coroapi.nready = &coro_nready;	1170	coroapi.nready = &coro_nready;
1155	coroapi.current = coro_current;	1171	coroapi.current = coro_current;
1156		1172
1157	GCoroAPI = &coroapi;	1173	GCoroAPI = &coroapi;
1158	sv_setiv (sv, (IV)&coroapi);	1174	sv_setiv (sv, (IV)&coroapi);
…		…
1178		1194
1179	coro->prio = newprio;	1195	coro->prio = newprio;
1180	}	1196	}
1181	}	1197	}
1182		1198
1183	void	1199	SV *
1184	ready (SV *self)	1200	ready (SV *self)
1185	PROTOTYPE: $	1201	PROTOTYPE: $
1186	CODE:	1202	CODE:
1187	api_ready (self);	1203	RETVAL = boolSV (api_ready (self));
		1204	OUTPUT:
		1205	RETVAL
		1206
		1207	SV *
		1208	is_ready (SV *self)
		1209	PROTOTYPE: $
		1210	CODE:
		1211	RETVAL = boolSV (api_is_ready (self));
		1212	OUTPUT:
		1213	RETVAL
1188		1214
1189	int	1215	int
1190	nready (...)	1216	nready (...)
1191	PROTOTYPE:	1217	PROTOTYPE:
1192	CODE:	1218	CODE:
1193	RETVAL = coro_nready;	1219	RETVAL = coro_nready;
1194	OUTPUT:	1220	OUTPUT:
1195	RETVAL	1221	RETVAL
1196		1222
		1223	void
		1224	_set_current (SV *current)
		1225	PROTOTYPE: $
		1226	CODE:
		1227	SvREFCNT_dec (SvRV (coro_current));
		1228	SvRV_set (coro_current, SvREFCNT_inc (SvRV (current)));
		1229
1197	MODULE = Coro::State PACKAGE = Coro::AIO	1230	MODULE = Coro::State PACKAGE = Coro::AIO
1198		1231
1199	SV *	1232	SV *
1200	_get_state ()	1233	_get_state ()
1201	CODE:	1234	CODE:

Diff Legend

-–
+Removed lines
-+
+Added lines
-<
+Changed lines
->
+Changed lines

Comparing Coro/Coro/State.xs (file contents): Revision 1.98 by root, Sun Nov 26 21:25:53 2006 UTC vs. Revision 1.119 by root, Sat Dec 2 15:41:28 2006 UTC

Diff Legend

Comparing Coro/Coro/State.xs (file contents):
Revision 1.98 by root, Sun Nov 26 21:25:53 2006 UTC vs.
Revision 1.119 by root, Sat Dec 2 15:41:28 2006 UTC