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

Comparing Coro/Coro/State.xs (file contents):
Revision 1.103 by root, Mon Nov 27 01:33:30 2006 UTC vs.
Revision 1.116 by root, Fri Dec 1 14:01:43 2006 UTC

…		…
3	#include "EXTERN.h"	3	#include "EXTERN.h"
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
		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
8		15
9	#define PERL_VERSION_ATLEAST(a,b,c) \	16	#define PERL_VERSION_ATLEAST(a,b,c) \
10	(PERL_REVISION > (a) \	17	(PERL_REVISION > (a) \
11	\|\| (PERL_REVISION == (a) \	18	\|\| (PERL_REVISION == (a) \
12	&& (PERL_VERSION > (b) \	19	&& (PERL_VERSION > (b) \
…		…
58	# ifndef PAGESIZE	65	# ifndef PAGESIZE
59	# define PAGESIZE pagesize	66	# define PAGESIZE pagesize
60	# define BOOT_PAGESIZE pagesize = sysconf (_SC_PAGESIZE)	67	# define BOOT_PAGESIZE pagesize = sysconf (_SC_PAGESIZE)
61	static long pagesize;	68	static long pagesize;
62	# else	69	# else
63	# define BOOT_PAGESIZE	70	# define BOOT_PAGESIZE (void)0
64	# endif	71	# endif
		72	#else
		73	# define PAGESIZE 0
		74	# define BOOT_PAGESIZE (void)0
65	#endif	75	#endif
66		76
67	/* 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
68	* 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
69	* and should be unique. */	79	* and should be unique. */
…		…
96	static struct CoroAPI coroapi;	106	static struct CoroAPI coroapi;
97	static AV main_mainstack; / used to differentiate between $main and others */	107	static AV main_mainstack; / used to differentiate between $main and others */
98	static HV coro_state_stash, coro_stash;	108	static HV coro_state_stash, coro_stash;
99	static SV coro_mortal; / will be freed after next transfer */	109	static SV coro_mortal; / will be freed after next transfer */
100		110
		111	static struct coro_cctx *cctx_first;
		112	static int cctx_count, cctx_idle;
		113
101	/* this is a structure representing a c-level coroutine */	114	/* this is a structure representing a c-level coroutine */
102	typedef struct coro_stack {	115	typedef struct coro_cctx {
103	struct coro_stack *next;	116	struct coro_cctx *next;
104		117
105	/* the stack */	118	/* the stack */
106	void *sptr;	119	void *sptr;
107	long ssize; /* positive == mmap, otherwise malloc */	120	long ssize; /* positive == mmap, otherwise malloc */
108		121
109	/* cpu state */	122	/* cpu state */
110	void idle_sp; / sp of top-level transfer/schedule/cede call */	123	void idle_sp; / sp of top-level transfer/schedule/cede call */
111	JMPENV *top_env;	124	JMPENV *top_env;
112	coro_context cctx;	125	coro_context cctx;
113	} 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, /* coroutine is running */
		136	CF_READY, /* coroutine is ready */
		137	};
114		138
115	/* this is a structure representing a perl-level coroutine */	139	/* this is a structure representing a perl-level coroutine */
116	struct coro {	140	struct coro {
117	/* the c coroutine allocated to this perl coroutine, if any */	141	/* the c coroutine allocated to this perl coroutine, if any */
118	coro_stack *stack;	142	coro_cctx *cctx;
119		143
120	/* data associated with this coroutine (initial args) */	144	/* data associated with this coroutine (initial args) */
121	AV *args;	145	AV *args;
122	int refcnt;	146	int refcnt;
		147	int flags;
123		148
124	/* optionally saved, might be zero */	149	/* optionally saved, might be zero */
125	AV *defav;	150	AV *defav;
126	SV *defsv;	151	SV *defsv;
127	SV *errsv;	152	SV *errsv;
128		153
129	/* saved global state not related to stacks */	154	#define VAR(name,type) type name;
130	U8 dowarn;	155	# include "state.h"
131	I32 in_eval;	156	#undef VAR
132
133	/* the stacks and related info (callchain etc..) */
134	PERL_SI *curstackinfo;
135	AV *curstack;
136	AV *mainstack;
137	SV **stack_sp;
138	OP *op;
139	SV **curpad;
140	AV *comppad;
141	CV *compcv;
142	SV **stack_base;
143	SV **stack_max;
144	SV **tmps_stack;
145	I32 tmps_floor;
146	I32 tmps_ix;
147	I32 tmps_max;
148	I32 *markstack;
149	I32 *markstack_ptr;
150	I32 *markstack_max;
151	I32 *scopestack;
152	I32 scopestack_ix;
153	I32 scopestack_max;
154	ANY *savestack;
155	I32 savestack_ix;
156	I32 savestack_max;
157	OP **retstack;
158	I32 retstack_ix;
159	I32 retstack_max;
160	PMOP *curpm;
161	COP *curcop;
162		157
163	/* coro process data */	158	/* coro process data */
164	int prio;	159	int prio;
165	};	160	};
166		161
…		…
230		225
231	#define PERL_MAGIC_coro PERL_MAGIC_ext	226	#define PERL_MAGIC_coro PERL_MAGIC_ext
232		227
233	static MGVTBL vtbl_coro = {0, 0, 0, 0, coro_cv_free};	228	static MGVTBL vtbl_coro = {0, 0, 0, 0, coro_cv_free};
234		229
		230	#define CORO_MAGIC(cv) \
		231	SvMAGIC (cv) \
		232	? SvMAGIC (cv)->mg_type == PERL_MAGIC_coro \
		233	? SvMAGIC (cv) \
		234	: mg_find ((SV *)cv, PERL_MAGIC_coro) \
		235	: 0
		236
235	/* the next two functions merely cache the padlists */	237	/* the next two functions merely cache the padlists */
236	static void	238	static void
237	get_padlist (CV *cv)	239	get_padlist (CV *cv)
238	{	240	{
239	MAGIC mg = mg_find ((SV )cv, PERL_MAGIC_coro);	241	MAGIC *mg = CORO_MAGIC (cv);
		242	AV *av;
240		243
241	if (mg && AvFILLp ((AV *)mg->mg_obj) >= 0)	244	if (mg && AvFILLp ((av = (AV *)mg->mg_obj)) >= 0)
242	CvPADLIST (cv) = (AV )av_pop ((AV )mg->mg_obj);	245	CvPADLIST (cv) = (AV *)AvARRAY (av)[AvFILLp (av)--];
243	else	246	else
244	{	247	{
245	#if 0	248	#if 0
246	/* this is probably cleaner, but also slower? */	249	/* this is probably cleaner, but also slower? */
247	CV *cp = Perl_cv_clone (cv);	250	CV *cp = Perl_cv_clone (cv);
…		…
255	}	258	}
256		259
257	static void	260	static void
258	put_padlist (CV *cv)	261	put_padlist (CV *cv)
259	{	262	{
260	MAGIC mg = mg_find ((SV )cv, PERL_MAGIC_coro);	263	MAGIC *mg = CORO_MAGIC (cv);
		264	AV *av;
261		265
262	if (!mg)	266	if (!mg)
263	{	267	{
264	sv_magic ((SV *)cv, 0, PERL_MAGIC_coro, 0, 0);	268	sv_magic ((SV *)cv, 0, PERL_MAGIC_coro, 0, 0);
265	mg = mg_find ((SV *)cv, PERL_MAGIC_coro);	269	mg = mg_find ((SV *)cv, PERL_MAGIC_coro);
266	mg->mg_virtual = &vtbl_coro;	270	mg->mg_virtual = &vtbl_coro;
267	mg->mg_obj = (SV *)newAV ();	271	mg->mg_obj = (SV *)newAV ();
268	}	272	}
269		273
270	av_push ((AV )mg->mg_obj, (SV )CvPADLIST (cv));	274	av = (AV *)mg->mg_obj;
		275
		276	if (AvFILLp (av) >= AvMAX (av))
		277	av_extend (av, AvMAX (av) + 1);
		278
		279	AvARRAY (av)[++AvFILLp (av)] = (SV *)CvPADLIST (cv);
271	}	280	}
272		281
273	#define SB do {	282	#define SB do {
274	#define SE } while (0)	283	#define SE } while (0)
275		284
…		…
279	#define REPLACE_SV(sv,val) SB SvREFCNT_dec(sv); (sv) = (val); (val) = 0; SE	288	#define REPLACE_SV(sv,val) SB SvREFCNT_dec(sv); (sv) = (val); (val) = 0; SE
280		289
281	static void	290	static void
282	load_state(Coro__State c)	291	load_state(Coro__State c)
283	{	292	{
284	PL_dowarn = c->dowarn;	293	#define VAR(name,type) PL_ ## name = c->name;
285	PL_in_eval = c->in_eval;	294	# include "state.h"
286		295	#undef VAR
287	PL_curstackinfo = c->curstackinfo;
288	PL_curstack = c->curstack;
289	PL_mainstack = c->mainstack;
290	PL_stack_sp = c->stack_sp;
291	PL_op = c->op;
292	PL_curpad = c->curpad;
293	PL_comppad = c->comppad;
294	PL_compcv = c->compcv;
295	PL_stack_base = c->stack_base;
296	PL_stack_max = c->stack_max;
297	PL_tmps_stack = c->tmps_stack;
298	PL_tmps_floor = c->tmps_floor;
299	PL_tmps_ix = c->tmps_ix;
300	PL_tmps_max = c->tmps_max;
301	PL_markstack = c->markstack;
302	PL_markstack_ptr = c->markstack_ptr;
303	PL_markstack_max = c->markstack_max;
304	PL_scopestack = c->scopestack;
305	PL_scopestack_ix = c->scopestack_ix;
306	PL_scopestack_max = c->scopestack_max;
307	PL_savestack = c->savestack;
308	PL_savestack_ix = c->savestack_ix;
309	PL_savestack_max = c->savestack_max;
310	#if !PERL_VERSION_ATLEAST (5,9,0)
311	PL_retstack = c->retstack;
312	PL_retstack_ix = c->retstack_ix;
313	PL_retstack_max = c->retstack_max;
314	#endif
315	PL_curpm = c->curpm;
316	PL_curcop = c->curcop;
317		296
318	if (c->defav) REPLACE_SV (GvAV (PL_defgv), c->defav);	297	if (c->defav) REPLACE_SV (GvAV (PL_defgv), c->defav);
319	if (c->defsv) REPLACE_SV (DEFSV , c->defsv);	298	if (c->defsv) REPLACE_SV (DEFSV , c->defsv);
320	if (c->errsv) REPLACE_SV (ERRSV , c->errsv);	299	if (c->errsv) REPLACE_SV (ERRSV , c->errsv);
321		300
…		…
324	CV *cv;	303	CV *cv;
325		304
326	/* now do the ugly restore mess */	305	/* now do the ugly restore mess */
327	while ((cv = (CV *)POPs))	306	while ((cv = (CV *)POPs))
328	{	307	{
329	AV padlist = (AV )POPs;
330
331	if (padlist)
332	{
333	put_padlist (cv); /* mark this padlist as available */	308	put_padlist (cv); /* mark this padlist as available */
334	CvPADLIST(cv) = padlist;	309	CvDEPTH (cv) = PTR2IV (POPs);
335	}	310	CvPADLIST (cv) = (AV *)POPs;
336
337	++CvDEPTH(cv);
338	}	311	}
339		312
340	PUTBACK;	313	PUTBACK;
341	}	314	}
342	}	315	}
…		…
364	PERL_CONTEXT *cx = &ccstk[cxix--];	337	PERL_CONTEXT *cx = &ccstk[cxix--];
365		338
366	if (CxTYPE(cx) == CXt_SUB)	339	if (CxTYPE(cx) == CXt_SUB)
367	{	340	{
368	CV *cv = cx->blk_sub.cv;	341	CV *cv = cx->blk_sub.cv;
		342
369	if (CvDEPTH(cv))	343	if (CvDEPTH (cv))
370	{	344	{
371	EXTEND (SP, CvDEPTH(cv)*2);	345	EXTEND (SP, 3);
372
373	while (--CvDEPTH(cv))
374	{
375	/* this tells the restore code to increment CvDEPTH */
376	PUSHs (Nullsv);
377	PUSHs ((SV *)cv);
378	}
379		346
380	PUSHs ((SV *)CvPADLIST(cv));	347	PUSHs ((SV *)CvPADLIST(cv));
		348	PUSHs (INT2PTR (SV *, CvDEPTH (cv)));
381	PUSHs ((SV *)cv);	349	PUSHs ((SV *)cv);
382		350
		351	CvDEPTH (cv) = 0;
383	get_padlist (cv);	352	get_padlist (cv);
384	}	353	}
385	}	354	}
386	#ifdef CXt_FORMAT	355	#ifdef CXt_FORMAT
387	else if (CxTYPE(cx) == CXt_FORMAT)	356	else if (CxTYPE(cx) == CXt_FORMAT)
…		…
406		375
407	c->defav = flags & TRANSFER_SAVE_DEFAV ? (AV *)SvREFCNT_inc (GvAV (PL_defgv)) : 0;	376	c->defav = flags & TRANSFER_SAVE_DEFAV ? (AV *)SvREFCNT_inc (GvAV (PL_defgv)) : 0;
408	c->defsv = flags & TRANSFER_SAVE_DEFSV ? SvREFCNT_inc (DEFSV) : 0;	377	c->defsv = flags & TRANSFER_SAVE_DEFSV ? SvREFCNT_inc (DEFSV) : 0;
409	c->errsv = flags & TRANSFER_SAVE_ERRSV ? SvREFCNT_inc (ERRSV) : 0;	378	c->errsv = flags & TRANSFER_SAVE_ERRSV ? SvREFCNT_inc (ERRSV) : 0;
410		379
411	c->dowarn = PL_dowarn;	380	#define VAR(name,type)c->name = PL_ ## name;
412	c->in_eval = PL_in_eval;	381	# include "state.h"
413		382	#undef VAR
414	c->curstackinfo = PL_curstackinfo;
415	c->curstack = PL_curstack;
416	c->mainstack = PL_mainstack;
417	c->stack_sp = PL_stack_sp;
418	c->op = PL_op;
419	c->curpad = PL_curpad;
420	c->comppad = PL_comppad;
421	c->compcv = PL_compcv;
422	c->stack_base = PL_stack_base;
423	c->stack_max = PL_stack_max;
424	c->tmps_stack = PL_tmps_stack;
425	c->tmps_floor = PL_tmps_floor;
426	c->tmps_ix = PL_tmps_ix;
427	c->tmps_max = PL_tmps_max;
428	c->markstack = PL_markstack;
429	c->markstack_ptr = PL_markstack_ptr;
430	c->markstack_max = PL_markstack_max;
431	c->scopestack = PL_scopestack;
432	c->scopestack_ix = PL_scopestack_ix;
433	c->scopestack_max = PL_scopestack_max;
434	c->savestack = PL_savestack;
435	c->savestack_ix = PL_savestack_ix;
436	c->savestack_max = PL_savestack_max;
437	#if !PERL_VERSION_ATLEAST (5,9,0)
438	c->retstack = PL_retstack;
439	c->retstack_ix = PL_retstack_ix;
440	c->retstack_max = PL_retstack_max;
441	#endif
442	c->curpm = PL_curpm;
443	c->curcop = PL_curcop;
444	}	383	}
445		384
446	/*	385	/*
447	* allocate various perl stacks. This is an exact copy	386	* allocate various perl stacks. This is an exact copy
448	* of perl.c:init_stacks, except that it uses less memory	387	* of perl.c:init_stacks, except that it uses less memory
…		…
450	* not usually need a lot of stackspace.	389	* not usually need a lot of stackspace.
451	*/	390	*/
452	static void	391	static void
453	coro_init_stacks ()	392	coro_init_stacks ()
454	{	393	{
455	PL_curstackinfo = new_stackinfo(96, 1024/sizeof(PERL_CONTEXT) - 1);	394	PL_curstackinfo = new_stackinfo(128, 1024/sizeof(PERL_CONTEXT));
456	PL_curstackinfo->si_type = PERLSI_MAIN;	395	PL_curstackinfo->si_type = PERLSI_MAIN;
457	PL_curstack = PL_curstackinfo->si_stack;	396	PL_curstack = PL_curstackinfo->si_stack;
458	PL_mainstack = PL_curstack; /* remember in case we switch stacks */	397	PL_mainstack = PL_curstack; /* remember in case we switch stacks */
459		398
460	PL_stack_base = AvARRAY(PL_curstack);	399	PL_stack_base = AvARRAY(PL_curstack);
461	PL_stack_sp = PL_stack_base;	400	PL_stack_sp = PL_stack_base;
462	PL_stack_max = PL_stack_base + AvMAX(PL_curstack);	401	PL_stack_max = PL_stack_base + AvMAX(PL_curstack);
463		402
464	New(50,PL_tmps_stack,96,SV*);	403	New(50,PL_tmps_stack,128,SV*);
465	PL_tmps_floor = -1;	404	PL_tmps_floor = -1;
466	PL_tmps_ix = -1;	405	PL_tmps_ix = -1;
467	PL_tmps_max = 96;	406	PL_tmps_max = 128;
468		407
469	New(54,PL_markstack,16,I32);	408	New(54,PL_markstack,32,I32);
470	PL_markstack_ptr = PL_markstack;	409	PL_markstack_ptr = PL_markstack;
471	PL_markstack_max = PL_markstack + 16;	410	PL_markstack_max = PL_markstack + 32;
472		411
473	#ifdef SET_MARK_OFFSET	412	#ifdef SET_MARK_OFFSET
474	SET_MARK_OFFSET;	413	SET_MARK_OFFSET;
475	#endif	414	#endif
476		415
477	New(54,PL_scopestack,16,I32);	416	New(54,PL_scopestack,32,I32);
478	PL_scopestack_ix = 0;	417	PL_scopestack_ix = 0;
479	PL_scopestack_max = 16;	418	PL_scopestack_max = 32;
480		419
481	New(54,PL_savestack,96,ANY);	420	New(54,PL_savestack,64,ANY);
482	PL_savestack_ix = 0;	421	PL_savestack_ix = 0;
483	PL_savestack_max = 96;	422	PL_savestack_max = 64;
484		423
485	#if !PERL_VERSION_ATLEAST (5,9,0)	424	#if !PERL_VERSION_ATLEAST (5,9,0)
486	New(54,PL_retstack,8,OP*);	425	New(54,PL_retstack,16,OP*);
487	PL_retstack_ix = 0;	426	PL_retstack_ix = 0;
488	PL_retstack_max = 8;	427	PL_retstack_max = 16;
489	#endif	428	#endif
490	}	429	}
491		430
492	/*	431	/*
493	* destroy the stacks, the callchain etc...	432	* destroy the stacks, the callchain etc...
494	*/	433	*/
495	static void	434	static void
496	coro_destroy_stacks()	435	coro_destroy_stacks ()
497	{	436	{
498	if (!IN_DESTRUCT)	437	if (!IN_DESTRUCT)
499	{	438	{
500	/* is this ugly, I ask? */	439	/* is this ugly, I ask? */
501	LEAVE_SCOPE (0);	440	LEAVE_SCOPE (0);
…		…
567	myop.op_flags = OPf_WANT_VOID;	506	myop.op_flags = OPf_WANT_VOID;
568		507
569	PL_op = (OP *)&myop;	508	PL_op = (OP *)&myop;
570		509
571	PUSHMARK (SP);	510	PUSHMARK (SP);
572	XPUSHs ((SV *)get_cv ("Coro::State::coro_init", FALSE));	511	XPUSHs ((SV *)get_cv ("Coro::State::_coro_init", FALSE));
573	PUTBACK;	512	PUTBACK;
574	PL_op = PL_ppaddr[OP_ENTERSUB](aTHX);	513	PL_op = PL_ppaddr[OP_ENTERSUB](aTHX);
575	SPAGAIN;	514	SPAGAIN;
576		515
577	ENTER; /* necessary e.g. for dounwind */	516	ENTER; /* necessary e.g. for dounwind */
…		…
587	coro_mortal = 0;	526	coro_mortal = 0;
588	}	527	}
589	}	528	}
590		529
591	static void NOINLINE	530	static void NOINLINE
592	prepare_cctx (coro_stack *cctx)	531	prepare_cctx (coro_cctx *cctx)
593	{	532	{
594	dSP;	533	dSP;
595	LOGOP myop;	534	LOGOP myop;
596		535
597	Zero (&myop, 1, LOGOP);	536	Zero (&myop, 1, LOGOP);
598	myop.op_next = PL_op;	537	myop.op_next = PL_op;
599	myop.op_flags = OPf_WANT_VOID;	538	myop.op_flags = OPf_WANT_VOID;
600		539
601	sv_setiv (get_sv ("Coro::State::cctx_stack", FALSE), PTR2IV (cctx));	540	sv_setiv (get_sv ("Coro::State::_cctx", FALSE), PTR2IV (cctx));
602		541
603	PUSHMARK (SP);	542	PUSHMARK (SP);
604	XPUSHs ((SV *)get_cv ("Coro::State::cctx_init", FALSE));	543	XPUSHs ((SV *)get_cv ("Coro::State::_cctx_init", FALSE));
605	PUTBACK;	544	PUTBACK;
606	PL_restartop = PL_ppaddr[OP_ENTERSUB](aTHX);	545	PL_restartop = PL_ppaddr[OP_ENTERSUB](aTHX);
607	SPAGAIN;	546	SPAGAIN;
608	}	547	}
609		548
…		…
615		554
616	/*	555	/*
617	* this is a _very_ stripped down perl interpreter ;)	556	* this is a _very_ stripped down perl interpreter ;)
618	*/	557	*/
619	PL_top_env = &PL_start_env;	558	PL_top_env = &PL_start_env;
		559
620	/* inject call to cctx_init */	560	/* inject call to cctx_init */
621	prepare_cctx ((coro_stack *)arg);	561	prepare_cctx ((coro_cctx *)arg);
622		562
623	/* somebody will hit me for both perl_run and PL_restartop */	563	/* somebody will hit me for both perl_run and PL_restartop */
624	perl_run (PL_curinterp);	564	perl_run (PL_curinterp);
625		565
626	fputs ("FATAL: C coroutine fell over the edge of the world, aborting.\n", stderr);	566	fputs ("FATAL: C coroutine fell over the edge of the world, aborting. Did you call exit in a coroutine?\n", stderr);
627	abort ();	567	abort ();
628	}	568	}
629		569
630	static coro_stack *	570	static coro_cctx *
631	stack_new ()	571	cctx_new ()
632	{	572	{
633	coro_stack *stack;	573	coro_cctx *cctx;
634		574
		575	++cctx_count;
		576
635	New (0, stack, 1, coro_stack);	577	New (0, cctx, 1, coro_cctx);
636		578
637	#if HAVE_MMAP	579	#if HAVE_MMAP
638		580
639	stack->ssize = ((STACKSIZE * sizeof (long) + PAGESIZE - 1) / PAGESIZE + STACKGUARD) * PAGESIZE;	581	cctx->ssize = ((STACKSIZE * sizeof (long) + PAGESIZE - 1) / PAGESIZE + STACKGUARD) * PAGESIZE;
640	/* mmap suppsedly does allocate-on-write for us */	582	/* mmap suppsedly does allocate-on-write for us */
641	stack->sptr = mmap (0, stack->ssize, PROT_EXEC\|PROT_READ\|PROT_WRITE, MAP_PRIVATE\|MAP_ANONYMOUS, 0, 0);	583	cctx->sptr = mmap (0, cctx->ssize, PROT_EXEC\|PROT_READ\|PROT_WRITE, MAP_PRIVATE\|MAP_ANONYMOUS, 0, 0);
642		584
643	if (stack->sptr == (void *)-1)	585	if (cctx->sptr == (void *)-1)
644	{	586	{
645	perror ("FATAL: unable to mmap stack for coroutine");	587	perror ("FATAL: unable to mmap stack for coroutine");
646	_exit (EXIT_FAILURE);	588	_exit (EXIT_FAILURE);
647	}	589	}
648		590
649	# if STACKGUARD	591	# if STACKGUARD
650	mprotect (stack->sptr, STACKGUARD * PAGESIZE, PROT_NONE);	592	mprotect (cctx->sptr, STACKGUARD * PAGESIZE, PROT_NONE);
651	# endif	593	# endif
652		594
653	#else	595	#else
654		596
655	stack->ssize = STACKSIZE * (long)sizeof (long);	597	cctx->ssize = STACKSIZE * (long)sizeof (long);
656	New (0, stack->sptr, STACKSIZE, long);	598	New (0, cctx->sptr, STACKSIZE, long);
657		599
658	if (!stack->sptr)	600	if (!cctx->sptr)
659	{	601	{
660	perror (stderr, "FATAL: unable to malloc stack for coroutine");	602	perror ("FATAL: unable to malloc stack for coroutine");
661	_exit (EXIT_FAILURE);	603	_exit (EXIT_FAILURE);
662	}	604	}
663		605
664	#endif	606	#endif
665		607
		608	#if USE_VALGRIND
		609	cctx->valgrind_id = VALGRIND_STACK_REGISTER (
		610	STACKGUARD * PAGESIZE + (char *)cctx->sptr,
		611	cctx->ssize + (char *)cctx->sptr
		612	);
		613	#endif
		614
666	coro_create (&stack->cctx, coro_run, (void *)stack, stack->sptr, stack->ssize);	615	coro_create (&cctx->cctx, coro_run, (void *)cctx, cctx->sptr, cctx->ssize);
667		616
668	return stack;	617	return cctx;
669	}	618	}
670		619
671	static void	620	static void
672	stack_free (coro_stack *stack)	621	cctx_destroy (coro_cctx *cctx)
673	{	622	{
674	if (!stack)	623	if (!cctx)
675	return;	624	return;
676		625
		626	--cctx_count;
		627
		628	#if USE_VALGRIND
		629	VALGRIND_STACK_DEREGISTER (cctx->valgrind_id);
		630	#endif
		631
677	#if HAVE_MMAP	632	#if HAVE_MMAP
678	munmap (stack->sptr, stack->ssize);	633	munmap (cctx->sptr, cctx->ssize);
679	#else	634	#else
680	Safefree (stack->sptr);	635	Safefree (cctx->sptr);
681	#endif	636	#endif
682		637
683	Safefree (stack);	638	Safefree (cctx);
684	}	639	}
685		640
686	static coro_stack *stack_first;
687	static int cctx_count, cctx_idle;
688
689	static coro_stack *	641	static coro_cctx *
690	stack_get ()	642	cctx_get ()
691	{	643	{
692	coro_stack *stack;	644	coro_cctx *cctx;
693		645
694	if (stack_first)	646	if (cctx_first)
695	{	647	{
		648	cctx = cctx_first;
		649	cctx_first = cctx->next;
696	--cctx_idle;	650	--cctx_idle;
697	stack = stack_first;
698	stack_first = stack->next;
699	}	651	}
700	else	652	else
701	{	653	{
702	++cctx_count;	654	cctx = cctx_new ();
703	stack = stack_new ();
704	PL_op = PL_op->op_next;	655	PL_op = PL_op->op_next;
705	}	656	}
706		657
707	return stack;	658	return cctx;
708	}	659	}
709		660
710	static void	661	static void
711	stack_put (coro_stack *stack)	662	cctx_put (coro_cctx *cctx)
712	{	663	{
		664	/* free another cctx if overlimit */
		665	if (cctx_idle >= MAX_IDLE_CCTX)
		666	{
		667	coro_cctx *first = cctx_first;
		668	cctx_first = first->next;
		669	--cctx_idle;
		670
		671	assert (!first->inuse);
		672	cctx_destroy (first);
		673	}
		674
713	++cctx_idle;	675	++cctx_idle;
714	stack->next = stack_first;	676	cctx->next = cctx_first;
715	stack_first = stack;	677	cctx_first = cctx;
716	}	678	}
717		679
718	/* never call directly, always through the coro_state_transfer global variable */	680	/* never call directly, always through the coro_state_transfer global variable */
719	static void NOINLINE	681	static void NOINLINE
720	transfer (struct coro prev, struct coro next, int flags)	682	transfer (struct coro prev, struct coro next, int flags)
721	{	683	{
722	dSTACKLEVEL;	684	dSTACKLEVEL;
723		685
724	/* sometimes transfer is only called to set idle_sp */	686	/* sometimes transfer is only called to set idle_sp */
725	if (flags == TRANSFER_SET_STACKLEVEL)	687	if (flags == TRANSFER_SET_STACKLEVEL)
726	((coro_stack *)prev)->idle_sp = STACKLEVEL;	688	((coro_cctx *)prev)->idle_sp = STACKLEVEL;
727	else if (prev != next)	689	else if (prev != next)
728	{	690	{
729	coro_stack *prev__stack;	691	coro_cctx *prev__cctx;
		692
		693	if (!prev->cctx)
		694	{
		695	/* create a new empty context */
		696	Newz (0, prev->cctx, 1, coro_cctx);
		697	prev->cctx->inuse = 1;
		698	prev->flags \|= CF_RUNNING;
		699	}
		700
		701	if (!prev->flags & CF_RUNNING)
		702	croak ("Coro::State::transfer called with non-running prev Coro::State, but can only transfer from running states");
		703
		704	if (next->flags & CF_RUNNING)
		705	croak ("Coro::State::transfer called with running next Coro::State, but can only transfer to inactive states");
		706
		707	prev->flags &= ~CF_RUNNING;
		708	next->flags \|= CF_RUNNING;
730		709
731	LOCK;	710	LOCK;
732		711
733	if (next->mainstack)	712	if (next->mainstack)
734	{	713	{
…		…
741	/* need to start coroutine */	720	/* need to start coroutine */
742	/* first get rid of the old state */	721	/* first get rid of the old state */
743	SAVE (prev, -1);	722	SAVE (prev, -1);
744	/* setup coroutine call */	723	/* setup coroutine call */
745	setup_coro (next);	724	setup_coro (next);
746	/* need a stack */	725	/* need a new stack */
747	next->stack = 0;	726	assert (!next->stack);
748	}	727	}
749		728
750	if (!prev->stack)
751	/* create a new empty context */
752	Newz (0, prev->stack, 1, coro_stack);
753
754	prev__stack = prev->stack;	729	prev__cctx = prev->cctx;
755		730
756	/* possibly "free" the stack */	731	/* possibly "free" the cctx */
757	if (prev__stack->idle_sp == STACKLEVEL)	732	if (prev__cctx->idle_sp == STACKLEVEL)
758	{	733	{
		734	/* I assume that STACKLEVEL is a stronger indicator than PL_top_env changes */
		735	assert (PL_top_env == prev__cctx->top_env);
		736
759	stack_put (prev__stack);	737	cctx_put (prev__cctx);
760	prev->stack = 0;	738	prev->cctx = 0;
761	}	739	}
762		740
763	if (!next->stack)	741	if (!next->cctx)
764	next->stack = stack_get ();	742	next->cctx = cctx_get ();
765		743
766	if (prev__stack != next->stack)	744	if (prev__cctx != next->cctx)
767	{	745	{
		746	assert ( prev__cctx->inuse);
		747	assert (!next->cctx->inuse);
		748
		749	prev__cctx->inuse = 0;
		750	next->cctx->inuse = 1;
		751
768	prev__stack->top_env = PL_top_env;	752	prev__cctx->top_env = PL_top_env;
769	PL_top_env = next->stack->top_env;	753	PL_top_env = next->cctx->top_env;
770	coro_transfer (&prev__stack->cctx, &next->stack->cctx);	754	coro_transfer (&prev__cctx->cctx, &next->cctx->cctx);
771	}	755	}
772		756
773	free_coro_mortal ();	757	free_coro_mortal ();
774		758
775	UNLOCK;	759	UNLOCK;
…		…
788	coro_state_destroy (struct coro *coro)	772	coro_state_destroy (struct coro *coro)
789	{	773	{
790	if (coro->refcnt--)	774	if (coro->refcnt--)
791	return;	775	return;
792		776
		777	if (coro->flags & CF_RUNNING)
		778	croak ("FATAL: tried to destroy currently running coroutine");
		779
793	if (coro->mainstack && coro->mainstack != main_mainstack)	780	if (coro->mainstack && coro->mainstack != main_mainstack)
794	{	781	{
795	struct coro temp;	782	struct coro temp;
796		783
797	SAVE ((&temp), TRANSFER_SAVE_ALL);	784	SAVE ((&temp), TRANSFER_SAVE_ALL);
…		…
802	LOAD ((&temp)); /* this will get rid of defsv etc.. */	789	LOAD ((&temp)); /* this will get rid of defsv etc.. */
803		790
804	coro->mainstack = 0;	791	coro->mainstack = 0;
805	}	792	}
806		793
807	stack_free (coro->stack);	794	cctx_destroy (coro->cctx);
808	SvREFCNT_dec (coro->args);	795	SvREFCNT_dec (coro->args);
809	Safefree (coro);	796	Safefree (coro);
810	}	797	}
811		798
812	static int	799	static int
…		…
894	static GV coro_current, coro_idle;	881	static GV coro_current, coro_idle;
895	static AV *coro_ready [PRIO_MAX-PRIO_MIN+1];	882	static AV *coro_ready [PRIO_MAX-PRIO_MIN+1];
896	static int coro_nready;	883	static int coro_nready;
897		884
898	static void	885	static void
899	coro_enq (SV *sv)	886	coro_enq (SV *coro_sv)
900	{	887	{
901	int prio;
902
903	if (SvTYPE (sv) != SVt_PVHV)
904	croak ("Coro::ready tried to enqueue something that is not a coroutine");
905
906	prio = SvSTATE (sv)->prio;
907
908	av_push (coro_ready [prio - PRIO_MIN], sv);	888	av_push (coro_ready [SvSTATE (coro_sv)->prio - PRIO_MIN], coro_sv);
909	coro_nready++;	889	coro_nready++;
910	}	890	}
911		891
912	static SV *	892	static SV *
913	coro_deq (int min_prio)	893	coro_deq (int min_prio)
…		…
926	}	906	}
927		907
928	return 0;	908	return 0;
929	}	909	}
930		910
931	static void	911	static int
932	api_ready (SV *coro)	912	api_ready (SV *coro_sv)
933	{	913	{
934	dTHX;	914	struct coro *coro;
935		915
936	if (SvROK (coro))	916	if (SvROK (coro_sv))
937	coro = SvRV (coro);	917	coro_sv = SvRV (coro_sv);
		918
		919	coro = SvSTATE (coro_sv);
		920
		921	if (coro->flags & CF_READY)
		922	return 0;
		923
		924	if (coro->flags & CF_RUNNING)
		925	croak ("Coro::ready called on currently running coroutine");
		926
		927	coro->flags \|= CF_READY;
938		928
939	LOCK;	929	LOCK;
940	coro_enq (SvREFCNT_inc (coro));	930	coro_enq (SvREFCNT_inc (coro_sv));
941	UNLOCK;	931	UNLOCK;
		932
		933	return 1;
		934	}
		935
		936	static int
		937	api_is_ready (SV *coro_sv)
		938	{
		939	return !!SvSTATE (coro_sv)->flags & CF_READY;
942	}	940	}
943		941
944	static void	942	static void
945	prepare_schedule (struct transfer_args *ta)	943	prepare_schedule (struct transfer_args *ta)
946	{	944	{
…		…
982	coro_mortal = prev;	980	coro_mortal = prev;
983		981
984	ta->prev = SvSTATE (prev);	982	ta->prev = SvSTATE (prev);
985	ta->next = SvSTATE (next);	983	ta->next = SvSTATE (next);
986	ta->flags = TRANSFER_SAVE_ALL;	984	ta->flags = TRANSFER_SAVE_ALL;
		985
		986	ta->next->flags &= ~CF_READY;
987	}	987	}
988		988
989	static void	989	static void
990	prepare_cede (struct transfer_args *ta)	990	prepare_cede (struct transfer_args *ta)
991	{	991	{
992	LOCK;	992	api_ready (GvSV (coro_current));
993	coro_enq (SvREFCNT_inc (SvRV (GvSV (coro_current))));
994	UNLOCK;
995		993
996	prepare_schedule (ta);	994	prepare_schedule (ta);
997	}	995	}
998		996
999	static void	997	static void
…		…
1056	sv_magicext ((SV )hv, 0, PERL_MAGIC_ext, &coro_state_vtbl, (char )coro, 0)->mg_flags \|= MGf_DUP;	1054	sv_magicext ((SV )hv, 0, PERL_MAGIC_ext, &coro_state_vtbl, (char )coro, 0)->mg_flags \|= MGf_DUP;
1057	RETVAL = sv_bless (newRV_noinc ((SV *)hv), gv_stashpv (klass, 1));	1055	RETVAL = sv_bless (newRV_noinc ((SV *)hv), gv_stashpv (klass, 1));
1058		1056
1059	for (i = 1; i < items; i++)	1057	for (i = 1; i < items; i++)
1060	av_push (coro->args, newSVsv (ST (i)));	1058	av_push (coro->args, newSVsv (ST (i)));
1061
1062	/coro->mainstack = 0; //actual work is done inside transfer /
1063	/coro->stack = 0;/
1064	}	1059	}
1065	OUTPUT:	1060	OUTPUT:
1066	RETVAL	1061	RETVAL
1067		1062
1068	void	1063	void
…		…
1077	struct transfer_args ta;	1072	struct transfer_args ta;
1078		1073
1079	switch (ix)	1074	switch (ix)
1080	{	1075	{
1081	case 0:	1076	case 0:
1082	ta.prev = (struct coro )INT2PTR (coro_stack , SvIV (ST (0)));	1077	ta.prev = (struct coro )INT2PTR (coro_cctx , SvIV (ST (0)));
1083	ta.next = 0;	1078	ta.next = 0;
1084	ta.flags = TRANSFER_SET_STACKLEVEL;	1079	ta.flags = TRANSFER_SET_STACKLEVEL;
1085	break;	1080	break;
1086		1081
1087	case 1:	1082	case 1:
…		…
1147	int code	1142	int code
1148	PROTOTYPE: $	1143	PROTOTYPE: $
1149	CODE:	1144	CODE:
1150	_exit (code);	1145	_exit (code);
1151		1146
		1147	int
		1148	cctx_count ()
		1149	CODE:
		1150	RETVAL = cctx_count;
		1151	OUTPUT:
		1152	RETVAL
		1153
		1154	int
		1155	cctx_idle ()
		1156	CODE:
		1157	RETVAL = cctx_idle;
		1158	OUTPUT:
		1159	RETVAL
		1160
1152	MODULE = Coro::State PACKAGE = Coro	1161	MODULE = Coro::State PACKAGE = Coro
1153		1162
1154	BOOT:	1163	BOOT:
1155	{	1164	{
1156	int i;	1165	int i;
…		…
1174	SV *sv = perl_get_sv("Coro::API", 1);	1183	SV *sv = perl_get_sv("Coro::API", 1);
1175		1184
1176	coroapi.schedule = api_schedule;	1185	coroapi.schedule = api_schedule;
1177	coroapi.cede = api_cede;	1186	coroapi.cede = api_cede;
1178	coroapi.ready = api_ready;	1187	coroapi.ready = api_ready;
		1188	coroapi.is_ready = api_is_ready;
1179	coroapi.nready = &coro_nready;	1189	coroapi.nready = &coro_nready;
1180	coroapi.current = coro_current;	1190	coroapi.current = coro_current;
1181		1191
1182	GCoroAPI = &coroapi;	1192	GCoroAPI = &coroapi;
1183	sv_setiv (sv, (IV)&coroapi);	1193	sv_setiv (sv, (IV)&coroapi);
…		…
1203		1213
1204	coro->prio = newprio;	1214	coro->prio = newprio;
1205	}	1215	}
1206	}	1216	}
1207		1217
1208	void	1218	SV *
1209	ready (SV *self)	1219	ready (SV *self)
1210	PROTOTYPE: $	1220	PROTOTYPE: $
1211	CODE:	1221	CODE:
1212	api_ready (self);	1222	RETVAL = boolSV (api_ready (self));
		1223	OUTPUT:
		1224	RETVAL
		1225
		1226	SV *
		1227	is_ready (SV *self)
		1228	PROTOTYPE: $
		1229	CODE:
		1230	RETVAL = boolSV (api_is_ready (self));
		1231	OUTPUT:
		1232	RETVAL
1213		1233
1214	int	1234	int
1215	nready (...)	1235	nready (...)
1216	PROTOTYPE:	1236	PROTOTYPE:
1217	CODE:	1237	CODE:

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Comparing Coro/Coro/State.xs (file contents): Revision 1.103 by root, Mon Nov 27 01:33:30 2006 UTC vs. Revision 1.116 by root, Fri Dec 1 14:01:43 2006 UTC

Diff Legend

Comparing Coro/Coro/State.xs (file contents):
Revision 1.103 by root, Mon Nov 27 01:33:30 2006 UTC vs.
Revision 1.116 by root, Fri Dec 1 14:01:43 2006 UTC