[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 1.109 by root, Mon Nov 27 18:45:29 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	#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)
10	# ifndef PL_ppaddr	20	# ifndef PL_ppaddr
11	# define PL_ppaddr ppaddr	21	# define PL_ppaddr ppaddr
12	# endif	22	# endif
13	# ifndef call_sv	23	# ifndef call_sv
14	# define call_sv perl_call_sv	24	# define call_sv perl_call_sv
…		…
52	# ifndef PAGESIZE	62	# ifndef PAGESIZE
53	# define PAGESIZE pagesize	63	# define PAGESIZE pagesize
54	# define BOOT_PAGESIZE pagesize = sysconf (_SC_PAGESIZE)	64	# define BOOT_PAGESIZE pagesize = sysconf (_SC_PAGESIZE)
55	static long pagesize;	65	static long pagesize;
56	# else	66	# else
57	# define BOOT_PAGESIZE	67	# define BOOT_PAGESIZE (void)0
58	# endif	68	# endif
		69	#else
		70	# define PAGESIZE 0
		71	# define BOOT_PAGESIZE (void)0
59	#endif	72	#endif
60		73
61	/* 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
62	* 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
63	* and should be unique. */	76	* and should be unique. */
64	#define dSTACKLEVEL int stacklevel	77	#define dSTACKLEVEL int stacklevel
65	#define STACKLEVEL ((void *)&stacklevel)	78	#define STACKLEVEL ((void *)&stacklevel)
66		79
67	#define IN_DESTRUCT (PL_main_cv == Nullcv)	80	#define IN_DESTRUCT (PL_main_cv == Nullcv)
		81
		82	#if __GNUC__ >= 3
		83	# define attribute(x) __attribute__(x)
		84	#else
		85	# define attribute(x)
		86	#endif
		87
		88	#define NOINLINE attribute ((noinline))
68		89
69	#include "CoroAPI.h"	90	#include "CoroAPI.h"
70		91
71	#define TRANSFER_SET_STACKLEVEL 0x8bfbfbfb /* magic cookie */	92	#define TRANSFER_SET_STACKLEVEL 0x8bfbfbfb /* magic cookie */
72		93
…		…
82	static struct CoroAPI coroapi;	103	static struct CoroAPI coroapi;
83	static AV main_mainstack; / used to differentiate between $main and others */	104	static AV main_mainstack; / used to differentiate between $main and others */
84	static HV coro_state_stash, coro_stash;	105	static HV coro_state_stash, coro_stash;
85	static SV coro_mortal; / will be freed after next transfer */	106	static SV coro_mortal; / will be freed after next transfer */
86		107
		108	static struct coro_cctx *cctx_first;
		109	static int cctx_count, cctx_idle;
		110
87	/* this is a structure representing a c-level coroutine */	111	/* this is a structure representing a c-level coroutine */
88	typedef struct coro_stack {	112	typedef struct coro_cctx {
89	struct coro_stack *next;	113	struct coro_cctx *next;
90		114
91	/* the stack */	115	/* the stack */
92	void *sptr;	116	void *sptr;
93	long ssize; /* positive == mmap, otherwise malloc */	117	long ssize; /* positive == mmap, otherwise malloc */
94		118
95	/* cpu state */	119	/* cpu state */
96	void idle_sp; / sp of top-level transfer/schedule/cede call */	120	void idle_sp; / sp of top-level transfer/schedule/cede call */
97	JMPENV *top_env;	121	JMPENV *top_env;
98	coro_context cctx;	122	coro_context cctx;
99	} coro_stack;	123
		124	#if USE_VALGRIND
		125	int valgrind_id;
		126	#endif
		127	} coro_cctx;
100		128
101	/* this is a structure representing a perl-level coroutine */	129	/* this is a structure representing a perl-level coroutine */
102	struct coro {	130	struct coro {
103	/* the c coroutine allocated to this perl coroutine, if any */	131	/* the c coroutine allocated to this perl coroutine, if any */
104	coro_stack *stack;	132	coro_cctx *cctx;
105		133
106	/* data associated with this coroutine (initial args) */	134	/* data associated with this coroutine (initial args) */
107	AV *args;	135	AV *args;
108	int refcnt;	136	int refcnt;
109		137
110	/* optionally saved, might be zero */	138	/* optionally saved, might be zero */
111	AV *defav;	139	AV *defav;
112	SV *defsv;	140	SV *defsv;
113	SV *errsv;	141	SV *errsv;
114		142
115	/* saved global state not related to stacks */	143	#define VAR(name,type) type name;
116	U8 dowarn;	144	# include "state.h"
117	I32 in_eval;	145	#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		146
149	/* coro process data */	147	/* coro process data */
150	int prio;	148	int prio;
151	};	149	};
152		150
…		…
159	AV *padlist = CvPADLIST (cv);	157	AV *padlist = CvPADLIST (cv);
160	AV newpadlist, newpad;	158	AV newpadlist, newpad;
161		159
162	newpadlist = newAV ();	160	newpadlist = newAV ();
163	AvREAL_off (newpadlist);	161	AvREAL_off (newpadlist);
164	#if PERL_VERSION < 9	162	#if PERL_VERSION_ATLEAST (5,9,0)
		163	Perl_pad_push (aTHX_ padlist, AvFILLp (padlist) + 1);
		164	#else
165	Perl_pad_push (aTHX_ padlist, AvFILLp (padlist) + 1, 1);	165	Perl_pad_push (aTHX_ padlist, AvFILLp (padlist) + 1, 1);
166	#else
167	Perl_pad_push (aTHX_ padlist, AvFILLp (padlist) + 1);
168	#endif	166	#endif
169	newpad = (AV *)AvARRAY (padlist)[AvFILLp (padlist)];	167	newpad = (AV *)AvARRAY (padlist)[AvFILLp (padlist)];
170	--AvFILLp (padlist);	168	--AvFILLp (padlist);
171		169
172	av_store (newpadlist, 0, SvREFCNT_inc (*av_fetch (padlist, 0, FALSE)));	170	av_store (newpadlist, 0, SvREFCNT_inc (*av_fetch (padlist, 0, FALSE)));
…		…
216		214
217	#define PERL_MAGIC_coro PERL_MAGIC_ext	215	#define PERL_MAGIC_coro PERL_MAGIC_ext
218		216
219	static MGVTBL vtbl_coro = {0, 0, 0, 0, coro_cv_free};	217	static MGVTBL vtbl_coro = {0, 0, 0, 0, coro_cv_free};
220		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
221	/* the next two functions merely cache the padlists */	226	/* the next two functions merely cache the padlists */
222	static void	227	static void
223	get_padlist (CV *cv)	228	get_padlist (CV *cv)
224	{	229	{
225	MAGIC mg = mg_find ((SV )cv, PERL_MAGIC_coro);	230	MAGIC *mg = CORO_MAGIC (cv);
		231	AV *av;
226		232
227	if (mg && AvFILLp ((AV *)mg->mg_obj) >= 0)	233	if (mg && AvFILLp ((av = (AV *)mg->mg_obj)) >= 0)
228	CvPADLIST (cv) = (AV )av_pop ((AV )mg->mg_obj);	234	CvPADLIST (cv) = (AV *)AvARRAY (av)[AvFILLp (av)--];
229	else	235	else
230	{	236	{
231	#if 0	237	#if 0
232	/* this is probably cleaner, but also slower? */	238	/* this is probably cleaner, but also slower? */
233	CV *cp = Perl_cv_clone (cv);	239	CV *cp = Perl_cv_clone (cv);
…		…
241	}	247	}
242		248
243	static void	249	static void
244	put_padlist (CV *cv)	250	put_padlist (CV *cv)
245	{	251	{
246	MAGIC mg = mg_find ((SV )cv, PERL_MAGIC_coro);	252	MAGIC *mg = CORO_MAGIC (cv);
		253	AV *av;
247		254
248	if (!mg)	255	if (!mg)
249	{	256	{
250	sv_magic ((SV *)cv, 0, PERL_MAGIC_coro, 0, 0);	257	sv_magic ((SV *)cv, 0, PERL_MAGIC_coro, 0, 0);
251	mg = mg_find ((SV *)cv, PERL_MAGIC_coro);	258	mg = mg_find ((SV *)cv, PERL_MAGIC_coro);
252	mg->mg_virtual = &vtbl_coro;	259	mg->mg_virtual = &vtbl_coro;
253	mg->mg_obj = (SV *)newAV ();	260	mg->mg_obj = (SV *)newAV ();
254	}	261	}
255		262
256	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);
257	}	269	}
258		270
259	#define SB do {	271	#define SB do {
260	#define SE } while (0)	272	#define SE } while (0)
261		273
…		…
265	#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
266		278
267	static void	279	static void
268	load_state(Coro__State c)	280	load_state(Coro__State c)
269	{	281	{
270	PL_dowarn = c->dowarn;	282	#define VAR(name,type) PL_ ## name = c->name;
271	PL_in_eval = c->in_eval;	283	# include "state.h"
272		284	#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		285
304	if (c->defav) REPLACE_SV (GvAV (PL_defgv), c->defav);	286	if (c->defav) REPLACE_SV (GvAV (PL_defgv), c->defav);
305	if (c->defsv) REPLACE_SV (DEFSV , c->defsv);	287	if (c->defsv) REPLACE_SV (DEFSV , c->defsv);
306	if (c->errsv) REPLACE_SV (ERRSV , c->errsv);	288	if (c->errsv) REPLACE_SV (ERRSV , c->errsv);
307		289
…		…
310	CV *cv;	292	CV *cv;
311		293
312	/* now do the ugly restore mess */	294	/* now do the ugly restore mess */
313	while ((cv = (CV *)POPs))	295	while ((cv = (CV *)POPs))
314	{	296	{
315	AV padlist = (AV )POPs;
316
317	if (padlist)
318	{
319	put_padlist (cv); /* mark this padlist as available */	297	put_padlist (cv); /* mark this padlist as available */
320	CvPADLIST(cv) = padlist;	298	CvDEPTH (cv) = PTR2IV (POPs);
321	}	299	CvPADLIST (cv) = (AV *)POPs;
322
323	++CvDEPTH(cv);
324	}	300	}
325		301
326	PUTBACK;	302	PUTBACK;
327	}	303	}
328	}	304	}
…		…
350	PERL_CONTEXT *cx = &ccstk[cxix--];	326	PERL_CONTEXT *cx = &ccstk[cxix--];
351		327
352	if (CxTYPE(cx) == CXt_SUB)	328	if (CxTYPE(cx) == CXt_SUB)
353	{	329	{
354	CV *cv = cx->blk_sub.cv;	330	CV *cv = cx->blk_sub.cv;
		331
355	if (CvDEPTH(cv))	332	if (CvDEPTH (cv))
356	{	333	{
357	EXTEND (SP, CvDEPTH(cv)*2);	334	EXTEND (SP, 3);
358
359	while (--CvDEPTH(cv))
360	{
361	/* this tells the restore code to increment CvDEPTH */
362	PUSHs (Nullsv);
363	PUSHs ((SV *)cv);
364	}
365		335
366	PUSHs ((SV *)CvPADLIST(cv));	336	PUSHs ((SV *)CvPADLIST(cv));
		337	PUSHs (INT2PTR (SV *, CvDEPTH (cv)));
367	PUSHs ((SV *)cv);	338	PUSHs ((SV *)cv);
368		339
		340	CvDEPTH (cv) = 0;
369	get_padlist (cv);	341	get_padlist (cv);
370	}	342	}
371	}	343	}
372	#ifdef CXt_FORMAT	344	#ifdef CXt_FORMAT
373	else if (CxTYPE(cx) == CXt_FORMAT)	345	else if (CxTYPE(cx) == CXt_FORMAT)
…		…
392		364
393	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;
394	c->defsv = flags & TRANSFER_SAVE_DEFSV ? SvREFCNT_inc (DEFSV) : 0;	366	c->defsv = flags & TRANSFER_SAVE_DEFSV ? SvREFCNT_inc (DEFSV) : 0;
395	c->errsv = flags & TRANSFER_SAVE_ERRSV ? SvREFCNT_inc (ERRSV) : 0;	367	c->errsv = flags & TRANSFER_SAVE_ERRSV ? SvREFCNT_inc (ERRSV) : 0;
396		368
397	c->dowarn = PL_dowarn;	369	#define VAR(name,type)c->name = PL_ ## name;
398	c->in_eval = PL_in_eval;	370	# include "state.h"
399		371	#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	}	372	}
431		373
432	/*	374	/*
433	* allocate various perl stacks. This is an exact copy	375	* allocate various perl stacks. This is an exact copy
434	* of perl.c:init_stacks, except that it uses less memory	376	* of perl.c:init_stacks, except that it uses less memory
…		…
436	* not usually need a lot of stackspace.	378	* not usually need a lot of stackspace.
437	*/	379	*/
438	static void	380	static void
439	coro_init_stacks ()	381	coro_init_stacks ()
440	{	382	{
441	LOCK;
442
443	PL_curstackinfo = new_stackinfo(96, 1024/sizeof(PERL_CONTEXT) - 1);	383	PL_curstackinfo = new_stackinfo(96, 1024/sizeof(PERL_CONTEXT) - 1);
444	PL_curstackinfo->si_type = PERLSI_MAIN;	384	PL_curstackinfo->si_type = PERLSI_MAIN;
445	PL_curstack = PL_curstackinfo->si_stack;	385	PL_curstack = PL_curstackinfo->si_stack;
446	PL_mainstack = PL_curstack; /* remember in case we switch stacks */	386	PL_mainstack = PL_curstack; /* remember in case we switch stacks */
447		387
…		…
468		408
469	New(54,PL_savestack,96,ANY);	409	New(54,PL_savestack,96,ANY);
470	PL_savestack_ix = 0;	410	PL_savestack_ix = 0;
471	PL_savestack_max = 96;	411	PL_savestack_max = 96;
472		412
473	#if PERL_VERSION < 9	413	#if !PERL_VERSION_ATLEAST (5,9,0)
474	New(54,PL_retstack,8,OP*);	414	New(54,PL_retstack,8,OP*);
475	PL_retstack_ix = 0;	415	PL_retstack_ix = 0;
476	PL_retstack_max = 8;	416	PL_retstack_max = 8;
477	#endif	417	#endif
478
479	UNLOCK;
480	}	418	}
481		419
482	/*	420	/*
483	* destroy the stacks, the callchain etc...	421	* destroy the stacks, the callchain etc...
484	*/	422	*/
485	static void	423	static void
486	destroy_stacks()	424	coro_destroy_stacks ()
487	{	425	{
488	if (!IN_DESTRUCT)	426	if (!IN_DESTRUCT)
489	{	427	{
490	/* is this ugly, I ask? */	428	/* is this ugly, I ask? */
491	LEAVE_SCOPE (0);	429	LEAVE_SCOPE (0);
…		…
522		460
523	Safefree (PL_tmps_stack);	461	Safefree (PL_tmps_stack);
524	Safefree (PL_markstack);	462	Safefree (PL_markstack);
525	Safefree (PL_scopestack);	463	Safefree (PL_scopestack);
526	Safefree (PL_savestack);	464	Safefree (PL_savestack);
527	#if PERL_VERSION < 9	465	#if !PERL_VERSION_ATLEAST (5,9,0)
528	Safefree (PL_retstack);	466	Safefree (PL_retstack);
529	#endif	467	#endif
530	}	468	}
531		469
532	static void	470	static void
533	setup_coro (struct coro *coro)	471	setup_coro (struct coro *coro)
534	{	472	{
535	/*	473	/*
536	* emulate part of the perl startup here.	474	* emulate part of the perl startup here.
537	*/	475	*/
538	dTHX;
539	dSP;
540	UNOP myop;
541	SV sub_init = (SV )get_cv ("Coro::State::coro_init", FALSE);
542		476
543	coro_init_stacks ();	477	coro_init_stacks ();
		478
544	/PL_curcop = 0;/	479	PL_curcop = 0;
545	/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
546	SvREFCNT_dec (GvAV (PL_defgv));	490	SvREFCNT_dec (GvAV (PL_defgv));
547	GvAV (PL_defgv) = coro->args; coro->args = 0;	491	GvAV (PL_defgv) = coro->args; coro->args = 0;
548		492
549	SPAGAIN;
550
551	Zero (&myop, 1, UNOP);	493	Zero (&myop, 1, LOGOP);
552	myop.op_next = Nullop;	494	myop.op_next = Nullop;
553	myop.op_flags = OPf_WANT_VOID;	495	myop.op_flags = OPf_WANT_VOID;
554		496
555	PL_op = (OP *)&myop;	497	PL_op = (OP *)&myop;
556		498
557	PUSHMARK(SP);	499	PUSHMARK (SP);
558	XPUSHs (sub_init);	500	XPUSHs ((SV *)get_cv ("Coro::State::_coro_init", FALSE));
559	PUTBACK;	501	PUTBACK;
560	PL_op = PL_ppaddr[OP_ENTERSUB](aTHX);	502	PL_op = PL_ppaddr[OP_ENTERSUB](aTHX);
561	SPAGAIN;	503	SPAGAIN;
562		504
563	ENTER; /* necessary e.g. for dounwind */	505	ENTER; /* necessary e.g. for dounwind */
		506	}
564	}	507	}
565		508
566	static void	509	static void
567	free_coro_mortal ()	510	free_coro_mortal ()
568	{	511	{
…		…
571	SvREFCNT_dec (coro_mortal);	514	SvREFCNT_dec (coro_mortal);
572	coro_mortal = 0;	515	coro_mortal = 0;
573	}	516	}
574	}	517	}
575		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
576	static void	538	static void
577	coro_run (void *arg)	539	coro_run (void *arg)
578	{	540	{
		541	/* coro_run is the alternative epilogue of transfer() */
		542	UNLOCK;
		543
579	/*	544	/*
580	* this is a _very_ stripped down perl interpreter ;)	545	* this is a _very_ stripped down perl interpreter ;)
581	*/	546	*/
582	dTHX;
583	int ret;
584
585	UNLOCK;
586
587	PL_top_env = &PL_start_env;	547	PL_top_env = &PL_start_env;
588		548
589	sv_setiv (get_sv ("Coro::State::cctx_stack", FALSE), PTR2IV ((coro_stack *)arg));	549	/* inject call to cctx_init */
590	sv_setiv (get_sv ("Coro::State::cctx_restartop", FALSE), PTR2IV (PL_op));	550	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		551
595	/* somebody will hit me for both perl_run and PL_restartop */	552	/* somebody will hit me for both perl_run and PL_restartop */
596	ret = perl_run (PERL_GET_CONTEXT);	553	perl_run (PL_curinterp);
597	printf ("ret %d\n", ret);//D
598		554
599	fputs ("FATAL: C coroutine fell over the edge of the world, aborting.\n", stderr);	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;	570	cctx->ssize = ((STACKSIZE * sizeof (long) + PAGESIZE - 1) / PAGESIZE + STACKGUARD) * PAGESIZE;
613	/* mmap suppsedly does allocate-on-write for us */	571	/* 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);	572	cctx->sptr = mmap (0, cctx->ssize, PROT_EXEC\|PROT_READ\|PROT_WRITE, MAP_PRIVATE\|MAP_ANONYMOUS, 0, 0);
615		573
616	if (stack->sptr == (void *)-1)	574	if (cctx->sptr == (void *)-1)
617	{	575	{
618	perror ("FATAL: unable to mmap stack for coroutine");	576	perror ("FATAL: unable to mmap stack for coroutine");
619	_exit (EXIT_FAILURE);	577	_exit (EXIT_FAILURE);
620	}	578	}
621		579
622	# if STACKGUARD	580	# if STACKGUARD
623	mprotect (stack->sptr, STACKGUARD * PAGESIZE, PROT_NONE);	581	mprotect (cctx->sptr, STACKGUARD * PAGESIZE, PROT_NONE);
624	# endif	582	# endif
625		583
626	#else	584	#else
627		585
628	stack->ssize = STACKSIZE * (long)sizeof (long);	586	cctx->ssize = STACKSIZE * (long)sizeof (long);
629	New (0, stack->sptr, STACKSIZE, long);	587	New (0, cctx->sptr, STACKSIZE, long);
630		588
631	if (!stack->sptr)	589	if (!cctx->sptr)
632	{	590	{
633	perror (stderr, "FATAL: unable to malloc stack for coroutine");	591	perror ("FATAL: unable to malloc stack for coroutine");
634	_exit (EXIT_FAILURE);	592	_exit (EXIT_FAILURE);
635	}	593	}
636		594
637	#endif	595	#endif
638		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
639	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);
640		605
641	return stack;	606	return cctx;
642	}	607	}
643		608
644	static void	609	static void
645	stack_free (coro_stack *stack)	610	cctx_free (coro_cctx *cctx)
646	{	611	{
647	if (!stack)	612	if (!cctx)
648	return;	613	return;
649		614
		615	--cctx_count;
		616
		617	#if USE_VALGRIND
		618	VALGRIND_STACK_DEREGISTER (cctx->valgrind_id);
		619	#endif
		620
650	#if HAVE_MMAP	621	#if HAVE_MMAP
651	munmap (stack->sptr, stack->ssize);	622	munmap (cctx->sptr, cctx->ssize);
652	#else	623	#else
653	Safefree (stack->sptr);	624	Safefree (cctx->sptr);
654	#endif	625	#endif
655		626
656	Safefree (stack);	627	Safefree (cctx);
657	}	628	}
658		629
659	static coro_stack *stack_first;
660
661	static coro_stack *	630	static coro_cctx *
662	stack_get ()	631	cctx_get ()
663	{	632	{
664	coro_stack *stack;	633	coro_cctx *cctx;
665		634
666	if (stack_first)	635	if (cctx_first)
667	{	636	{
668	stack = stack_first;	637	--cctx_idle;
		638	cctx = cctx_first;
669	stack_first = stack->next;	639	cctx_first = cctx->next;
670	}	640	}
671	else	641	else
672	{	642	{
673	stack = stack_new ();	643	cctx = cctx_new ();
674	PL_op = PL_op->op_next;	644	PL_op = PL_op->op_next;
675	}	645	}
676		646
677	return stack;	647	return cctx;
678	}	648	}
679		649
680	static void	650	static void
681	stack_put (coro_stack *stack)	651	cctx_put (coro_cctx *cctx)
682	{	652	{
683	stack->next = stack_first;	653	++cctx_idle;
684	stack_first = stack;	654	cctx->next = cctx_first;
		655	cctx_first = cctx;
685	}	656	}
686		657
687	/* never call directly, always through the coro_state_transfer global variable */	658	/* never call directly, always through the coro_state_transfer global variable */
688	static void	659	static void NOINLINE
689	transfer_impl (struct coro prev, struct coro next, int flags)	660	transfer (struct coro prev, struct coro next, int flags)
690	{	661	{
691	dSTACKLEVEL;	662	dSTACKLEVEL;
692		663
693	/* sometimes transfer is only called to set idle_sp */	664	/* sometimes transfer is only called to set idle_sp */
694	if (flags == TRANSFER_SET_STACKLEVEL)	665	if (flags == TRANSFER_SET_STACKLEVEL)
695	((coro_stack *)prev)->idle_sp = STACKLEVEL;	666	((coro_cctx *)prev)->idle_sp = STACKLEVEL;
696	else if (prev != next)	667	else if (prev != next)
697	{	668	{
698	coro_stack *prev__stack;	669	coro_cctx *prev__cctx;
699		670
700	LOCK;	671	LOCK;
701		672
702	if (next->mainstack)	673	if (next->mainstack)
703	{	674	{
…		…
711	/* first get rid of the old state */	682	/* first get rid of the old state */
712	SAVE (prev, -1);	683	SAVE (prev, -1);
713	/* setup coroutine call */	684	/* setup coroutine call */
714	setup_coro (next);	685	setup_coro (next);
715	/* need a stack */	686	/* need a stack */
716	next->stack = 0;	687	next->cctx = 0;
717	}	688	}
718		689
719	if (!prev->stack)	690	if (!prev->cctx)
720	/* create a new empty context */	691	/* create a new empty context */
721	Newz (0, prev->stack, 1, coro_stack);	692	Newz (0, prev->cctx, 1, coro_cctx);
722		693
723	prev__stack = prev->stack;	694	prev__cctx = prev->cctx;
724		695
725	/* possibly "free" the stack */	696	/* possibly "free" the cctx */
726	if (prev__stack->idle_sp == STACKLEVEL)	697	if (prev__cctx->idle_sp == STACKLEVEL)
727	{	698	{
728	stack_put (prev__stack);	699	cctx_put (prev__cctx);
729	prev->stack = 0;	700	prev->cctx = 0;
730	}	701	}
731		702
732	if (!next->stack)	703	if (!next->cctx)
733	next->stack = stack_get ();	704	next->cctx = cctx_get ();
734		705
735	if (prev__stack != next->stack)	706	if (prev__cctx != next->cctx)
736	{	707	{
737	prev__stack->top_env = PL_top_env;	708	prev__cctx->top_env = PL_top_env;
738	PL_top_env = next->stack->top_env;	709	PL_top_env = next->cctx->top_env;
739	coro_transfer (&prev__stack->cctx, &next->stack->cctx);	710	coro_transfer (&prev__cctx->cctx, &next->cctx->cctx);
740	}	711	}
741		712
742	free_coro_mortal ();	713	free_coro_mortal ();
743		714
744	UNLOCK;	715	UNLOCK;
745	}	716	}
746	}	717	}
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		718
753	struct transfer_args	719	struct transfer_args
754	{	720	{
755	struct coro prev, next;	721	struct coro prev, next;
756	int flags;	722	int flags;
757	};	723	};
758		724
759	#define TRANSFER(ta) coro_state_transfer ((ta).prev, (ta).next, (ta).flags)	725	#define TRANSFER(ta) transfer ((ta).prev, (ta).next, (ta).flags)
760		726
761	static void	727	static void
762	coro_state_destroy (struct coro *coro)	728	coro_state_destroy (struct coro *coro)
763	{	729	{
764	if (coro->refcnt--)	730	if (coro->refcnt--)
…		…
769	struct coro temp;	735	struct coro temp;
770		736
771	SAVE ((&temp), TRANSFER_SAVE_ALL);	737	SAVE ((&temp), TRANSFER_SAVE_ALL);
772	LOAD (coro);	738	LOAD (coro);
773		739
774	destroy_stacks ();	740	coro_destroy_stacks ();
775		741
776	LOAD ((&temp)); /* this will get rid of defsv etc.. */	742	LOAD ((&temp)); /* this will get rid of defsv etc.. */
777		743
778	coro->mainstack = 0;	744	coro->mainstack = 0;
779	}	745	}
780		746
781	stack_free (coro->stack);	747	cctx_free (coro->cctx);
782	SvREFCNT_dec (coro->args);	748	SvREFCNT_dec (coro->args);
783	Safefree (coro);	749	Safefree (coro);
784	}	750	}
785		751
786	static int	752	static int
…		…
802	++coro->refcnt;	768	++coro->refcnt;
803		769
804	return 0;	770	return 0;
805	}	771	}
806		772
807	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	};
808		783
809	static struct coro *	784	static struct coro *
810	SvSTATE (SV *coro)	785	SvSTATE (SV *coro)
811	{	786	{
812	HV *stash;	787	HV *stash;
…		…
909	static void	884	static void
910	prepare_schedule (struct transfer_args *ta)	885	prepare_schedule (struct transfer_args *ta)
911	{	886	{
912	SV current, prev, *next;	887	SV current, prev, *next;
913		888
914	LOCK;
915
916	current = GvSV (coro_current);	889	current = GvSV (coro_current);
917		890
918	for (;;)	891	for (;;)
919	{	892	{
920	LOCK;	893	LOCK;
921
922	next = coro_deq (PRIO_MIN);	894	next = coro_deq (PRIO_MIN);
		895	UNLOCK;
923		896
924	if (next)	897	if (next)
925	break;	898	break;
926
927	UNLOCK;
928		899
929	{	900	{
930	dSP;	901	dSP;
931		902
932	ENTER;	903	ENTER;
…		…
943		914
944	prev = SvRV (current);	915	prev = SvRV (current);
945	SvRV (current) = next;	916	SvRV (current) = next;
946		917
947	/* free this only after the transfer */	918	/* free this only after the transfer */
		919	LOCK;
948	free_coro_mortal ();	920	free_coro_mortal ();
		921	UNLOCK;
949	coro_mortal = prev;	922	coro_mortal = prev;
950		923
951	ta->prev = SvSTATE (prev);	924	ta->prev = SvSTATE (prev);
952	ta->next = SvSTATE (next);	925	ta->next = SvSTATE (next);
953	ta->flags = TRANSFER_SAVE_ALL;	926	ta->flags = TRANSFER_SAVE_ALL;
954
955	UNLOCK;
956	}	927	}
957		928
958	static void	929	static void
959	prepare_cede (struct transfer_args *ta)	930	prepare_cede (struct transfer_args *ta)
960	{	931	{
…		…
1025	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;
1026	RETVAL = sv_bless (newRV_noinc ((SV *)hv), gv_stashpv (klass, 1));	997	RETVAL = sv_bless (newRV_noinc ((SV *)hv), gv_stashpv (klass, 1));
1027		998
1028	for (i = 1; i < items; i++)	999	for (i = 1; i < items; i++)
1029	av_push (coro->args, newSVsv (ST (i)));	1000	av_push (coro->args, newSVsv (ST (i)));
1030
1031	/coro->mainstack = 0; //actual work is done inside transfer /
1032	/coro->stack = 0;/
1033	}	1001	}
1034	OUTPUT:	1002	OUTPUT:
1035	RETVAL	1003	RETVAL
1036		1004
1037	void	1005	void
…		…
1046	struct transfer_args ta;	1014	struct transfer_args ta;
1047		1015
1048	switch (ix)	1016	switch (ix)
1049	{	1017	{
1050	case 0:	1018	case 0:
1051	ta.prev = (struct coro )INT2PTR (coro_stack , SvIV (ST (0)));	1019	ta.prev = (struct coro )INT2PTR (coro_cctx , SvIV (ST (0)));
1052	ta.next = 0;	1020	ta.next = 0;
1053	ta.flags = TRANSFER_SET_STACKLEVEL;	1021	ta.flags = TRANSFER_SET_STACKLEVEL;
1054	break;	1022	break;
1055		1023
1056	case 1:	1024	case 1:
…		…
1110	++coro_src->refcnt;	1078	++coro_src->refcnt;
1111	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;
1112	}	1080	}
1113		1081
1114	void	1082	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	void
1121	_exit (code)	1083	_exit (code)
1122	int code	1084	int code
1123	PROTOTYPE: $	1085	PROTOTYPE: $
1124	CODE:	1086	CODE:
1125	_exit (code);	1087	_exit (code);
		1088
		1089	int
		1090	cctx_count ()
		1091	CODE:
		1092	RETVAL = cctx_count;
		1093	OUTPUT:
		1094	RETVAL
		1095
		1096	int
		1097	cctx_idle ()
		1098	CODE:
		1099	RETVAL = cctx_idle;
		1100	OUTPUT:
		1101	RETVAL
1126		1102
1127	MODULE = Coro::State PACKAGE = Coro	1103	MODULE = Coro::State PACKAGE = Coro
1128		1104
1129	BOOT:	1105	BOOT:
1130	{	1106	{

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Comparing Coro/Coro/State.xs (file contents): Revision 1.98 by root, Sun Nov 26 21:25:53 2006 UTC vs. Revision 1.109 by root, Mon Nov 27 18:45:29 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 1.109 by root, Mon Nov 27 18:45:29 2006 UTC