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

Comparing Coro/Coro/State.xs (file contents):
Revision 1.29 by root, Sat Aug 25 21:40:34 2001 UTC vs.
Revision 1.55 by pcg, Thu Apr 1 02:29:05 2004 UTC

…		…
1	#include "EXTERN.h"	1	#include "EXTERN.h"
2	#include "perl.h"	2	#include "perl.h"
3	#include "XSUB.h"	3	#include "XSUB.h"
4		4
		5	#include "patchlevel.h"
		6
		7	#if PATCHLEVEL < 6
		8	# ifndef PL_ppaddr
		9	# define PL_ppaddr ppaddr
		10	# endif
		11	# ifndef call_sv
		12	# define call_sv perl_call_sv
		13	# endif
		14	# ifndef get_sv
		15	# define get_sv perl_get_sv
		16	# endif
		17	# ifndef get_cv
		18	# define get_cv perl_get_cv
		19	# endif
		20	# ifndef IS_PADGV
		21	# define IS_PADGV(v) 0
		22	# endif
		23	# ifndef IS_PADCONST
		24	# define IS_PADCONST(v) 0
		25	# endif
		26	#endif
		27
5	#include "libcoro/coro.c"	28	#include "libcoro/coro.c"
6		29
7	#include <signal.h>	30	#include <signal.h>
8		31
9	#ifdef HAVE_MMAP	32	#ifdef HAVE_MMAP
10	# include <unistd.h>	33	# include <unistd.h>
11	# include <sys/mman.h>	34	# include <sys/mman.h>
12	# ifndef MAP_ANON
13	# ifdef MAP_ANONYMOUS	35	# ifndef MAP_ANONYMOUS
14	# define MAP_ANON MAP_ANONYMOUS	36	# ifdef MAP_ANON
		37	# define MAP_ANONYMOUS MAP_ANON
15	# else	38	# else
16	# undef HAVE_MMAP	39	# undef HAVE_MMAP
17	# endif	40	# endif
18	# endif	41	# endif
19	#endif	42	#endif
20		43
21	#define MAY_FLUSH /* increases codesize and is rarely used */
22
23	#define SUB_INIT "Coro::State::initialize"	44	#define SUB_INIT "Coro::State::initialize"
24	#define UCORO_STATE "_coro_state"	45	#define UCORO_STATE "_coro_state"
25		46
26	/* The next macro should declare a variable stacklevel that contains and approximation	47	/* The next macro should declare a variable stacklevel that contains and approximation
27	* to the current C stack pointer. Its property is that it changes with each call	48	* to the current C stack pointer. Its property is that it changes with each call
28	* and should be unique. */	49	* and should be unique. */
29	#define dSTACKLEVEL void *stacklevel = &stacklevel	50	#define dSTACKLEVEL void *stacklevel = &stacklevel
30		51
		52	#define IN_DESTRUCT (PL_main_cv == Nullcv)
		53
31	#define labs(l) ((l) >= 0 ? (l) : -(l))	54	#define labs(l) ((l) >= 0 ? (l) : -(l))
32		55
33	#include "CoroAPI.h"	56	#include "CoroAPI.h"
		57
		58	#ifdef USE_ITHREADS
		59	static perl_mutex coro_mutex;
		60	# define LOCK do { MUTEX_LOCK (&coro_mutex); } while (0)
		61	# define UNLOCK do { MUTEX_UNLOCK (&coro_mutex); } while (0)
		62	#else
		63	# define LOCK 0
		64	# define UNLOCK 0
		65	#endif
34		66
35	static struct CoroAPI coroapi;	67	static struct CoroAPI coroapi;
36		68
37	/* this is actually not only the c stack but also c registers etc... */	69	/* this is actually not only the c stack but also c registers etc... */
38	typedef struct {	70	typedef struct {
45	void *sptr;	77	void *sptr;
46	long ssize; /* positive == mmap, otherwise malloc */	78	long ssize; /* positive == mmap, otherwise malloc */
47	} coro_stack;	79	} coro_stack;
48		80
49	struct coro {	81	struct coro {
		82	/* the top-level JMPENV for each coroutine, needed to catch dies. */
		83	JMPENV start_env;
		84
50	/* the optional C context */	85	/* the optional C context */
51	coro_stack *stack;	86	coro_stack *stack;
52	void *cursp;	87	void *cursp;
53	int gencnt;	88	int gencnt;
54		89
…		…
66	AV *curstack;	101	AV *curstack;
67	AV *mainstack;	102	AV *mainstack;
68	SV **stack_sp;	103	SV **stack_sp;
69	OP *op;	104	OP *op;
70	SV **curpad;	105	SV **curpad;
		106	AV *comppad;
71	SV **stack_base;	107	SV **stack_base;
72	SV **stack_max;	108	SV **stack_max;
73	SV **tmps_stack;	109	SV **tmps_stack;
74	I32 tmps_floor;	110	I32 tmps_floor;
75	I32 tmps_ix;	111	I32 tmps_ix;
…		…
98		134
99	static AV main_mainstack; / used to differentiate between $main and others */	135	static AV main_mainstack; / used to differentiate between $main and others */
100	static HV *coro_state_stash;	136	static HV *coro_state_stash;
101	static SV *ucoro_state_sv;	137	static SV *ucoro_state_sv;
102	static U32 ucoro_state_hash;	138	static U32 ucoro_state_hash;
103	static HV *padlist_cache;	139	static SV coro_mortal; / will be freed after next transfer */
104		140
105	/* mostly copied from op.c:cv_clone2 */	141	/* mostly copied from op.c:cv_clone2 */
106	STATIC AV *	142	STATIC AV *
107	clone_padlist (AV *protopadlist)	143	clone_padlist (AV *protopadlist)
108	{	144	{
…		…
136	AvFLAGS (av) = AVf_REIFY;	172	AvFLAGS (av) = AVf_REIFY;
137		173
138	for (ix = fpad; ix > 0; ix--)	174	for (ix = fpad; ix > 0; ix--)
139	{	175	{
140	SV *namesv = (ix <= fname) ? pname[ix] : Nullsv;	176	SV *namesv = (ix <= fname) ? pname[ix] : Nullsv;
		177
141	if (namesv && namesv != &PL_sv_undef)	178	if (namesv && namesv != &PL_sv_undef)
142	{	179	{
143	char name = SvPVX (namesv); / XXX */	180	char name = SvPVX (namesv); / XXX */
		181
144	if (SvFLAGS (namesv) & SVf_FAKE \|\| *name == '&')	182	if (SvFLAGS (namesv) & SVf_FAKE \|\| *name == '&')
145	{ /* lexical from outside? */	183	{ /* lexical from outside? */
146	npad[ix] = SvREFCNT_inc (ppad[ix]);	184	npad[ix] = SvREFCNT_inc (ppad[ix]);
147	}	185	}
148	else	186	else
…		…
154	sv = (SV *) newAV ();	192	sv = (SV *) newAV ();
155	else if (*name == '%')	193	else if (*name == '%')
156	sv = (SV *) newHV ();	194	sv = (SV *) newHV ();
157	else	195	else
158	sv = NEWSV (0, 0);	196	sv = NEWSV (0, 0);
		197
		198	#ifdef SvPADBUSY
159	if (!SvPADBUSY (sv))	199	if (!SvPADBUSY (sv))
		200	#endif
160	SvPADMY_on (sv);	201	SvPADMY_on (sv);
		202
161	npad[ix] = sv;	203	npad[ix] = sv;
162	}	204	}
163	}	205	}
164	else if (IS_PADGV (ppad[ix]) \|\| IS_PADCONST (ppad[ix]))	206	else if (IS_PADGV (ppad[ix]) \|\| IS_PADCONST (ppad[ix]))
165	{	207	{
…		…
194	#endif	236	#endif
195		237
196	return newpadlist;	238	return newpadlist;
197	}	239	}
198		240
199	#ifdef MAY_FLUSH
200	STATIC void	241	STATIC void
201	free_padlist (AV *padlist)	242	free_padlist (AV *padlist)
202	{	243	{
203	/* may be during global destruction */	244	/* may be during global destruction */
204	if (SvREFCNT(padlist))	245	if (SvREFCNT (padlist))
205	{	246	{
206	I32 i = AvFILLp(padlist);	247	I32 i = AvFILLp (padlist);
207	while (i >= 0)	248	while (i >= 0)
208	{	249	{
209	SV **svp = av_fetch(padlist, i--, FALSE);	250	SV **svp = av_fetch (padlist, i--, FALSE);
210	SV sv = svp ? svp : Nullsv;
211	if (sv)	251	if (svp)
		252	{
		253	SV *sv;
		254	while (&PL_sv_undef != (sv = av_pop ((AV )svp)))
212	SvREFCNT_dec(sv);	255	SvREFCNT_dec (sv);
		256
		257	SvREFCNT_dec (*svp);
		258	}
213	}	259	}
214		260
215	SvREFCNT_dec((SV*)padlist);	261	SvREFCNT_dec ((SV*)padlist);
216	}	262	}
217	}	263	}
218	#endif	264
		265	STATIC int
		266	coro_cv_free (pTHX_ SV sv, MAGIC mg)
		267	{
		268	AV *padlist;
		269	AV av = (AV )mg->mg_obj;
		270
		271	/* casting is fun. */
		272	while (&PL_sv_undef != (SV )(padlist = (AV )av_pop (av)))
		273	free_padlist (padlist);
		274	}
		275
		276	#define PERL_MAGIC_coro PERL_MAGIC_ext
		277
		278	static MGVTBL vtbl_coro = {0, 0, 0, 0, coro_cv_free};
219		279
220	/* the next two functions merely cache the padlists */	280	/* the next two functions merely cache the padlists */
221	STATIC void	281	STATIC void
222	get_padlist (CV *cv)	282	get_padlist (CV *cv)
223	{	283	{
224	SV *he = hv_fetch (padlist_cache, (void )&cv, sizeof (CV *), 0);	284	MAGIC mg = mg_find ((SV )cv, PERL_MAGIC_coro);
225		285
226	if (he && AvFILLp ((AV )he) >= 0)	286	if (mg && AvFILLp ((AV *)mg->mg_obj) >= 0)
227	CvPADLIST (cv) = (AV )av_pop ((AV )*he);	287	CvPADLIST (cv) = (AV )av_pop ((AV )mg->mg_obj);
228	else	288	else
229	CvPADLIST (cv) = clone_padlist (CvPADLIST (cv));	289	CvPADLIST (cv) = clone_padlist (CvPADLIST (cv));
230	}	290	}
231		291
232	STATIC void	292	STATIC void
233	put_padlist (CV *cv)	293	put_padlist (CV *cv)
234	{	294	{
235	SV *he = hv_fetch (padlist_cache, (void )&cv, sizeof (CV *), 1);	295	MAGIC mg = mg_find ((SV )cv, PERL_MAGIC_coro);
236		296
237	if (SvTYPE (*he) != SVt_PVAV)	297	if (!mg)
238	{	298	{
239	SvREFCNT_dec (*he);	299	sv_magic ((SV *)cv, 0, PERL_MAGIC_coro, 0, 0);
		300	mg = mg_find ((SV *)cv, PERL_MAGIC_coro);
		301	mg->mg_virtual = &vtbl_coro;
240	he = (SV )newAV ();	302	mg->mg_obj = (SV *)newAV ();
241	}	303	}
242		304
243	av_push ((AV )he, (SV *)CvPADLIST (cv));	305	av_push ((AV )mg->mg_obj, (SV )CvPADLIST (cv));
244	}	306	}
245
246	#ifdef MAY_FLUSH
247	STATIC void
248	flush_padlist_cache ()
249	{
250	HV *hv = padlist_cache;
251	padlist_cache = newHV ();
252
253	if (hv_iterinit (hv))
254	{
255	HE *he;
256	AV *padlist;
257
258	while (!!(he = hv_iternext (hv)))
259	{
260	AV av = (AV )HeVAL(he);
261
262	/* casting is fun. */
263	while (&PL_sv_undef != (SV )(padlist = (AV )av_pop (av)))
264	free_padlist (padlist);
265	}
266	}
267
268	SvREFCNT_dec (hv);
269	}
270	#endif
271		307
272	#define SB do {	308	#define SB do {
273	#define SE } while (0)	309	#define SE } while (0)
274		310
275	#define LOAD(state) load_state(aTHX_ (state));	311	#define LOAD(state) load_state(aTHX_ (state));
276	#define SAVE(state,flags) save_state(aTHX_ (state),(flags));	312	#define SAVE(state,flags) save_state(aTHX_ (state),(flags));
277		313
278	#define REPLACE_SV(sv,val) SB SvREFCNT_dec(sv); (sv) = (val); SE	314	#define REPLACE_SV(sv,val) SB SvREFCNT_dec(sv); (sv) = (val); (val) = 0; SE
279		315
280	static void	316	static void
281	load_state(pTHX_ Coro__State c)	317	load_state(pTHX_ Coro__State c)
282	{	318	{
283	PL_dowarn = c->dowarn;	319	PL_dowarn = c->dowarn;
…		…
287	PL_curstack = c->curstack;	323	PL_curstack = c->curstack;
288	PL_mainstack = c->mainstack;	324	PL_mainstack = c->mainstack;
289	PL_stack_sp = c->stack_sp;	325	PL_stack_sp = c->stack_sp;
290	PL_op = c->op;	326	PL_op = c->op;
291	PL_curpad = c->curpad;	327	PL_curpad = c->curpad;
		328	PL_comppad = c->comppad;
292	PL_stack_base = c->stack_base;	329	PL_stack_base = c->stack_base;
293	PL_stack_max = c->stack_max;	330	PL_stack_max = c->stack_max;
294	PL_tmps_stack = c->tmps_stack;	331	PL_tmps_stack = c->tmps_stack;
295	PL_tmps_floor = c->tmps_floor;	332	PL_tmps_floor = c->tmps_floor;
296	PL_tmps_ix = c->tmps_ix;	333	PL_tmps_ix = c->tmps_ix;
…		…
325		362
326	if (padlist)	363	if (padlist)
327	{	364	{
328	put_padlist (cv); /* mark this padlist as available */	365	put_padlist (cv); /* mark this padlist as available */
329	CvPADLIST(cv) = padlist;	366	CvPADLIST(cv) = padlist;
330	#ifdef USE_THREADS
331	/CvOWNER(cv) = (struct perl_thread )POPs;*/
332	#endif
333	}	367	}
334		368
335	++CvDEPTH(cv);	369	++CvDEPTH(cv);
336	}	370	}
337		371
…		…
355		389
356	PUSHs (Nullsv);	390	PUSHs (Nullsv);
357	/* this loop was inspired by pp_caller */	391	/* this loop was inspired by pp_caller */
358	for (;;)	392	for (;;)
359	{	393	{
360	do	394	while (cxix >= 0)
361	{	395	{
362	PERL_CONTEXT *cx = &ccstk[cxix--];	396	PERL_CONTEXT *cx = &ccstk[cxix--];
363		397
364	if (CxTYPE(cx) == CXt_SUB)	398	if (CxTYPE(cx) == CXt_SUB)
365	{	399	{
366	CV *cv = cx->blk_sub.cv;	400	CV *cv = cx->blk_sub.cv;
367	if (CvDEPTH(cv))	401	if (CvDEPTH(cv))
368	{	402	{
369	#ifdef USE_THREADS
370	/XPUSHs ((SV )CvOWNER(cv));*/
371	/CvOWNER(cv) = 0;/
372	/error must unlock this cv etc.. etc.../
373	#endif
374	EXTEND (SP, CvDEPTH(cv)*2);	403	EXTEND (SP, CvDEPTH(cv)*2);
375		404
376	while (--CvDEPTH(cv))	405	while (--CvDEPTH(cv))
377	{	406	{
378	/* this tells the restore code to increment CvDEPTH */	407	/* this tells the restore code to increment CvDEPTH */
…		…
384	PUSHs ((SV *)cv);	413	PUSHs ((SV *)cv);
385		414
386	get_padlist (cv); /* this is a monster */	415	get_padlist (cv); /* this is a monster */
387	}	416	}
388	}	417	}
		418	#ifdef CXt_FORMAT
389	else if (CxTYPE(cx) == CXt_FORMAT)	419	else if (CxTYPE(cx) == CXt_FORMAT)
390	{	420	{
391	/* I never used formats, so how should I know how these are implemented? */	421	/* I never used formats, so how should I know how these are implemented? */
392	/* my bold guess is as a simple, plain sub... */	422	/* my bold guess is as a simple, plain sub... */
393	croak ("CXt_FORMAT not yet handled. Don't switch coroutines from within formats");	423	croak ("CXt_FORMAT not yet handled. Don't switch coroutines from within formats");
394	}	424	}
		425	#endif
395	}	426	}
396	while (cxix >= 0);
397		427
398	if (top_si->si_type == PERLSI_MAIN)	428	if (top_si->si_type == PERLSI_MAIN)
399	break;	429	break;
400		430
401	top_si = top_si->si_prev;	431	top_si = top_si->si_prev;
…		…
417	c->curstack = PL_curstack;	447	c->curstack = PL_curstack;
418	c->mainstack = PL_mainstack;	448	c->mainstack = PL_mainstack;
419	c->stack_sp = PL_stack_sp;	449	c->stack_sp = PL_stack_sp;
420	c->op = PL_op;	450	c->op = PL_op;
421	c->curpad = PL_curpad;	451	c->curpad = PL_curpad;
		452	c->comppad = PL_comppad;
422	c->stack_base = PL_stack_base;	453	c->stack_base = PL_stack_base;
423	c->stack_max = PL_stack_max;	454	c->stack_max = PL_stack_max;
424	c->tmps_stack = PL_tmps_stack;	455	c->tmps_stack = PL_tmps_stack;
425	c->tmps_floor = PL_tmps_floor;	456	c->tmps_floor = PL_tmps_floor;
426	c->tmps_ix = PL_tmps_ix;	457	c->tmps_ix = PL_tmps_ix;
…		…
442	}	473	}
443		474
444	/*	475	/*
445	* allocate various perl stacks. This is an exact copy	476	* allocate various perl stacks. This is an exact copy
446	* of perl.c:init_stacks, except that it uses less memory	477	* of perl.c:init_stacks, except that it uses less memory
447	* on the assumption that coroutines do not usually need	478	* on the (sometimes correct) assumption that coroutines do
448	* a lot of stackspace.	479	* not usually need a lot of stackspace.
449	*/	480	*/
450	STATIC void	481	STATIC void
451	coro_init_stacks (pTHX)	482	coro_init_stacks (pTHX)
452	{	483	{
		484	LOCK;
		485
453	PL_curstackinfo = new_stackinfo(96, 1024/sizeof(PERL_CONTEXT) - 1);	486	PL_curstackinfo = new_stackinfo(96, 1024/sizeof(PERL_CONTEXT) - 1);
454	PL_curstackinfo->si_type = PERLSI_MAIN;	487	PL_curstackinfo->si_type = PERLSI_MAIN;
455	PL_curstack = PL_curstackinfo->si_stack;	488	PL_curstack = PL_curstackinfo->si_stack;
456	PL_mainstack = PL_curstack; /* remember in case we switch stacks */	489	PL_mainstack = PL_curstack; /* remember in case we switch stacks */
457		490
…		…
466		499
467	New(54,PL_markstack,16,I32);	500	New(54,PL_markstack,16,I32);
468	PL_markstack_ptr = PL_markstack;	501	PL_markstack_ptr = PL_markstack;
469	PL_markstack_max = PL_markstack + 16;	502	PL_markstack_max = PL_markstack + 16;
470		503
		504	#ifdef SET_MARK_OFFSET
471	SET_MARK_OFFSET;	505	SET_MARK_OFFSET;
		506	#endif
472		507
473	New(54,PL_scopestack,16,I32);	508	New(54,PL_scopestack,16,I32);
474	PL_scopestack_ix = 0;	509	PL_scopestack_ix = 0;
475	PL_scopestack_max = 16;	510	PL_scopestack_max = 16;
476		511
…		…
479	PL_savestack_max = 96;	514	PL_savestack_max = 96;
480		515
481	New(54,PL_retstack,8,OP*);	516	New(54,PL_retstack,8,OP*);
482	PL_retstack_ix = 0;	517	PL_retstack_ix = 0;
483	PL_retstack_max = 8;	518	PL_retstack_max = 8;
		519
		520	UNLOCK;
484	}	521	}
485		522
486	/*	523	/*
487	* destroy the stacks, the callchain etc...	524	* destroy the stacks, the callchain etc...
488	* still there is a memleak of 128 bytes...
489	*/	525	*/
490	STATIC void	526	STATIC void
491	destroy_stacks(pTHX)	527	destroy_stacks(pTHX)
492	{	528	{
		529	if (!IN_DESTRUCT)
		530	{
493	/* is this ugly, I ask? */	531	/* is this ugly, I ask? */
494	while (PL_scopestack_ix)	532	LEAVE_SCOPE (0);
495	LEAVE;
496		533
497	/* sure it is, but more important: is it correct?? :/ */	534	/* sure it is, but more important: is it correct?? :/ */
498	while (PL_tmps_ix > PL_tmps_floor) /* should only ever be one iteration */
499	FREETMPS;	535	FREETMPS;
		536	}
500		537
501	while (PL_curstackinfo->si_next)	538	while (PL_curstackinfo->si_next)
502	PL_curstackinfo = PL_curstackinfo->si_next;	539	PL_curstackinfo = PL_curstackinfo->si_next;
503		540
504	while (PL_curstackinfo)	541	while (PL_curstackinfo)
…		…
509	dSP;	546	dSP;
510	SWITCHSTACK (PL_curstack, PL_curstackinfo->si_stack);	547	SWITCHSTACK (PL_curstack, PL_curstackinfo->si_stack);
511	PUTBACK; /* possibly superfluous */	548	PUTBACK; /* possibly superfluous */
512	}	549	}
513		550
514	if (PL_main_cv != Nullcv) /* don't during destruction. hack? */	551	if (!IN_DESTRUCT)
		552	{
515	dounwind(-1);	553	dounwind(-1);
516
517	SvREFCNT_dec(PL_curstackinfo->si_stack);	554	SvREFCNT_dec(PL_curstackinfo->si_stack);
		555	}
		556
518	Safefree(PL_curstackinfo->si_cxstack);	557	Safefree(PL_curstackinfo->si_cxstack);
519	Safefree(PL_curstackinfo);	558	Safefree(PL_curstackinfo);
520	PL_curstackinfo = p;	559	PL_curstackinfo = p;
521	}	560	}
522		561
…		…
535	New (0, stack, 1, coro_stack);	574	New (0, stack, 1, coro_stack);
536		575
537	stack->refcnt = 1;	576	stack->refcnt = 1;
538	stack->usecnt = 1;	577	stack->usecnt = 1;
539	stack->gencnt = ctx->gencnt = 0;	578	stack->gencnt = ctx->gencnt = 0;
		579
540	if (alloc)	580	if (alloc)
541	{	581	{
542	#ifdef HAVE_MMAP	582	#if HAVE_MMAP
543	stack->ssize = 128 * 1024 * sizeof (long); /* mmap should do allocate-on-write for us */	583	stack->ssize = 16384 * sizeof (long); /* mmap should do allocate-on-write for us */
544	stack->sptr = mmap (0, stack->ssize, PROT_EXEC\|PROT_READ\|PROT_WRITE, MAP_PRIVATE\|MAP_ANON, 0, 0);	584	stack->sptr = mmap (0, stack->ssize, PROT_EXEC\|PROT_READ\|PROT_WRITE, MAP_PRIVATE\|MAP_ANONYMOUS, 0, 0);
545	if (stack->sptr == (void *)-1)	585	if (stack->sptr == (void *)-1)
546	#endif	586	#endif
547	{	587	{
548	/FIXME//D//* reasonable stack size! */	588	/FIXME//D//* reasonable stack size! */
549	stack->ssize = -4096 * sizeof (long);	589	stack->ssize = - (8192 * sizeof (long));
550	New (0, stack->sptr, 4096, long);	590	New (0, stack->sptr, 8192, long);
551	}	591	}
552	}	592	}
553	else	593	else
554	stack->sptr = 0;	594	stack->sptr = 0;
555		595
…		…
569	{	609	{
570	#ifdef HAVE_MMAP	610	#ifdef HAVE_MMAP
571	if (stack->ssize > 0 && stack->sptr)	611	if (stack->ssize > 0 && stack->sptr)
572	munmap (stack->sptr, stack->ssize);	612	munmap (stack->sptr, stack->ssize);
573	else	613	else
574	#else	614	#endif
575	Safefree (stack->sptr);	615	Safefree (stack->sptr);
576	#endif	616
577	Safefree (stack);	617	Safefree (stack);
578	}	618	}
579	else if (ctx->gencnt == stack->gencnt)	619	else if (ctx->gencnt == stack->gencnt)
580	--stack->usecnt;	620	--stack->usecnt;
581	}	621	}
…		…
587	/*	627	/*
588	* emulate part of the perl startup here.	628	* emulate part of the perl startup here.
589	*/	629	*/
590	dSP;	630	dSP;
591	Coro__State ctx = (Coro__State)arg;	631	Coro__State ctx = (Coro__State)arg;
592	SV sub_init = (SV)get_cv(SUB_INIT, FALSE);	632	SV sub_init = (SV )get_cv (SUB_INIT, FALSE);
593		633
594	coro_init_stacks (aTHX);	634	coro_init_stacks (aTHX);
595	/PL_curcop = 0;/	635	/PL_curcop = 0;/
596	/PL_in_eval = PL_in_eval;/ /* inherit */	636	/PL_in_eval = PL_in_eval;/ /* inherit */
597	SvREFCNT_dec (GvAV (PL_defgv));	637	SvREFCNT_dec (GvAV (PL_defgv));
598	GvAV (PL_defgv) = ctx->args;	638	GvAV (PL_defgv) = ctx->args; ctx->args = 0;
599		639
600	SPAGAIN;	640	SPAGAIN;
601		641
602	if (ctx->stack)	642	if (ctx->stack)
603	{	643	{
…		…
630	* that doesn't matter, though, since it is only	670	* that doesn't matter, though, since it is only
631	* pp_nextstate and we never return...	671	* pp_nextstate and we never return...
632	* ah yes, and I don't care anyways ;)	672	* ah yes, and I don't care anyways ;)
633	*/	673	*/
634	PUTBACK;	674	PUTBACK;
635	PL_op = pp_entersub();	675	PL_op = PL_ppaddr[OP_ENTERSUB](aTHX);
636	SPAGAIN;	676	SPAGAIN;
637		677
638	ENTER; /* necessary e.g. for dounwind */	678	ENTER; /* necessary e.g. for dounwind */
639	}	679	}
640	}	680	}
…		…
644	{	684	{
645	/*	685	/*
646	* this is a _very_ stripped down perl interpreter ;)	686	* this is a _very_ stripped down perl interpreter ;)
647	*/	687	*/
648	Coro__State ctx = (Coro__State)arg;	688	Coro__State ctx = (Coro__State)arg;
		689	JMPENV coro_start_env;
649		690
650	/FIXME//* must set up top_env here */	691	PL_top_env = &ctx->start_env;
		692
651	ctx->cursp = 0;	693	ctx->cursp = 0;
652	PL_op = PL_op->op_next;	694	PL_op = PL_op->op_next;
653	CALLRUNOPS(aTHX);	695	CALLRUNOPS(aTHX);
654		696
655	abort ();	697	abort ();
656	}	698	}
657		699
658	STATIC void	700	STATIC void
659	transfer(pTHX_ struct coro prev, struct coro next, int flags)	701	transfer (pTHX_ struct coro prev, struct coro next, int flags)
660	{	702	{
661	dSTACKLEVEL;	703	dSTACKLEVEL;
662	static struct coro *xnext;
663		704
664	if (prev != next)	705	if (prev != next)
665	{	706	{
666	xnext = next;
667
668	if (next->mainstack)	707	if (next->mainstack)
669	{	708	{
		709	LOCK;
670	SAVE (prev, flags);	710	SAVE (prev, flags);
671	LOAD (next);	711	LOAD (next);
		712	UNLOCK;
672		713
673	/* mark this state as in-use */	714	/* mark this state as in-use */
674	next->mainstack = 0;	715	next->mainstack = 0;
675	next->tmps_ix = -2;	716	next->tmps_ix = -2;
676		717
…		…
695	continue_coro, (void *)next,	736	continue_coro, (void *)next,
696	next->stack->sptr, labs (next->stack->ssize));	737	next->stack->sptr, labs (next->stack->ssize));
697	}	738	}
698		739
699	coro_transfer (&(prev->stack->cctx), &(next->stack->cctx));	740	coro_transfer (&(prev->stack->cctx), &(next->stack->cctx));
		741	prev->cursp = stacklevel;
700	/* don't add any code here */	742	/* don't add any code here */
701	}	743	}
702		744	else
		745	next->cursp = stacklevel;
703	}	746	}
704	else if (next->tmps_ix == -2)	747	else if (next->tmps_ix == -2)
705	croak ("tried to transfer to running coroutine");	748	croak ("tried to transfer to running coroutine");
706	else	749	else
707	{	750	{
		751	LOCK;
708	SAVE (prev, -1); /* first get rid of the old state */	752	SAVE (prev, -1); /* first get rid of the old state */
		753	UNLOCK;
709		754
710	if (flags & TRANSFER_SAVE_CCTXT)	755	if (flags & TRANSFER_SAVE_CCTXT)
711	{	756	{
712	if (!prev->stack)	757	if (!prev->stack)
713	allocate_stack (prev, 0);	758	allocate_stack (prev, 0);
714		759
715	if (prev->stack->sptr && flags & TRANSFER_LAZY_STACK)	760	if (prev->stack->sptr && flags & TRANSFER_LAZY_STACK)
716	{	761	{
		762	PL_top_env = &next->start_env;
		763
717	setup_coro (next);	764	setup_coro (next);
		765	next->cursp = stacklevel;
718		766
719	prev->stack->refcnt++;	767	prev->stack->refcnt++;
720	prev->stack->usecnt++;	768	prev->stack->usecnt++;
721	next->stack = prev->stack;	769	next->stack = prev->stack;
722	next->gencnt = prev->gencnt;	770	next->gencnt = prev->gencnt;
723	}	771	}
724	else	772	else
725	{	773	{
		774	assert (!next->stack);
726	allocate_stack (next, 1);	775	allocate_stack (next, 1);
727	coro_create (&(next->stack->cctx),	776	coro_create (&(next->stack->cctx),
728	setup_coro, (void *)next,	777	setup_coro, (void *)next,
729	next->stack->sptr, labs (next->stack->ssize));	778	next->stack->sptr, labs (next->stack->ssize));
730	coro_transfer (&(prev->stack->cctx), &(next->stack->cctx));	779	coro_transfer (&(prev->stack->cctx), &(next->stack->cctx));
		780	prev->cursp = stacklevel;
731	/* don't add any code here */	781	/* don't add any code here */
732	}	782	}
733	}	783	}
734	else	784	else
		785	{
735	setup_coro (next);	786	setup_coro (next);
		787	next->cursp = stacklevel;
		788	}
736	}	789	}
737	}	790	}
738		791
739	/*	792	LOCK;
740	* xnext is now either prev or next, depending on wether	793	if (coro_mortal)
741	* we switched the c stack or not. that's why i use a global
742	* variable, that should become thread-specific at one point.
743	*/
744	xnext->cursp = stacklevel;
745	}
746
747	static struct coro *
748	sv_to_coro (SV arg, const char funcname, const char *varname)
749	{
750	if (SvROK(arg) && SvTYPE(SvRV(arg)) == SVt_PVHV)
751	{	794	{
752	HE he = hv_fetch_ent((HV )SvRV(arg), ucoro_state_sv, 0, ucoro_state_hash);	795	SvREFCNT_dec (coro_mortal);
753		796	coro_mortal = 0;
754	if (!he)
755	croak ("%s() -- %s is a hashref but lacks the " UCORO_STATE " key", funcname, varname);
756
757	arg = HeVAL(he);
758	}	797	}
759		798	UNLOCK;
		799	}
		800
		801	#define SV_CORO(sv,func) \
		802	do { \
		803	if (SvROK (sv)) \
		804	sv = SvRV (sv); \
		805	\
		806	if (SvTYPE (sv) == SVt_PVHV) \
		807	{ \
		808	HE he = hv_fetch_ent ((HV )sv, ucoro_state_sv, 0, ucoro_state_hash); \
		809	\
		810	if (!he) \
		811	croak ("%s() -- %s is a hashref but lacks the " UCORO_STATE " key", func, # sv); \
		812	\
		813	(sv) = SvRV (HeVAL(he)); \
		814	} \
		815	\
760	/* must also be changed inside Coro::Cont::yield */	816	/* must also be changed inside Coro::Cont::yield */ \
761	if (SvROK(arg) && SvSTASH(SvRV(arg)) == coro_state_stash)	817	if (!SvOBJECT (sv) \|\| SvSTASH (sv) != coro_state_stash) \
762	return (struct coro ) SvIV((SV)SvRV(arg));
763
764	croak ("%s() -- %s is not (and contains not) a Coro::State object", funcname, varname);	818	croak ("%s() -- %s is not (and contains not) a Coro::State object", func, # sv); \
765	/NORETURN/	819	\
766	}	820	} while(0)
		821
		822	#define SvSTATE(sv) (struct coro *)SvIV (sv)
767		823
768	static void	824	static void
769	api_transfer(pTHX_ SV prev, SV next, int flags)	825	api_transfer(pTHX_ SV prev, SV next, int flags)
770	{	826	{
771	transfer(aTHX_	827	SV_CORO (prev, "Coro::transfer");
772	sv_to_coro (prev, "Coro::transfer", "prev"),	828	SV_CORO (next, "Coro::transfer");
773	sv_to_coro (next, "Coro::transfer", "next"),	829
774	flags);	830	transfer(aTHX_ SvSTATE(prev), SvSTATE(next), flags);
775	}	831	}
776		832
777	/ Coro ******************************************************************/	833	/ Coro ******************************************************************/
778		834
779	#define PRIO_MAX 3	835	#define PRIO_MAX 3
…		…
789	static int coro_nready;	845	static int coro_nready;
790		846
791	static void	847	static void
792	coro_enq (SV *sv)	848	coro_enq (SV *sv)
793	{	849	{
794	if (SvROK (sv))	850	if (SvTYPE (sv) == SVt_PVHV)
795	{	851	{
796	SV *hv = SvRV (sv);
797	if (SvTYPE (hv) == SVt_PVHV)
798	{
799	SV *xprio = hv_fetch ((HV )hv, "prio", 4, 0);	852	SV *xprio = hv_fetch ((HV )sv, "prio", 4, 0);
800	int prio = xprio ? SvIV (*xprio) : PRIO_NORMAL;	853	int prio = xprio ? SvIV (*xprio) : PRIO_NORMAL;
801		854
802	prio = prio > PRIO_MAX ? PRIO_MAX	855	prio = prio > PRIO_MAX ? PRIO_MAX
803	: prio < PRIO_MIN ? PRIO_MIN	856	: prio < PRIO_MIN ? PRIO_MIN
804	: prio;	857	: prio;
805		858
806	av_push (coro_ready [prio - PRIO_MIN], sv);	859	av_push (coro_ready [prio - PRIO_MIN], sv);
807	coro_nready++;	860	coro_nready++;
808		861
809	return;	862	return;
810	}
811	}	863	}
812		864
813	croak ("Coro::ready tried to enqueue something that is not a coroutine");	865	croak ("Coro::ready tried to enqueue something that is not a coroutine");
814	}	866	}
815		867
…		…
833	}	885	}
834		886
835	static void	887	static void
836	api_ready (SV *coro)	888	api_ready (SV *coro)
837	{	889	{
		890	if (SvROK (coro))
		891	coro = SvRV (coro);
		892
		893	LOCK;
838	coro_enq (SvREFCNT_inc (coro));	894	coro_enq (SvREFCNT_inc (coro));
		895	UNLOCK;
839	}	896	}
840		897
841	static void	898	static void
842	api_schedule (int cede)	899	api_schedule (void)
843	{	900	{
844	SV prev, next;	901	SV prev, next;
845		902
		903	LOCK;
		904
846	prev = GvSV (coro_current);	905	prev = SvRV (GvSV (coro_current));
847
848	if (cede)
849	coro_enq (SvREFCNT_inc (prev));
850
851	next = coro_deq (PRIO_MIN);	906	next = coro_deq (PRIO_MIN);
852		907
853	if (!next)	908	if (!next)
854	next = SvREFCNT_inc (GvSV (coro_idle));	909	next = SvREFCNT_inc (SvRV (GvSV (coro_idle)));
855		910
856	GvSV (coro_current) = SvREFCNT_inc (next);	911	/* free this only after the transfer */
857	transfer (aTHX_	912	coro_mortal = prev;
858	sv_to_coro (prev, "Coro::schedule", "current coroutine"),	913	SV_CORO (prev, "Coro::schedule");
859	sv_to_coro (next, "Coro::schedule", "next coroutine"),	914
		915	SvRV (GvSV (coro_current)) = next;
		916
		917	SV_CORO (next, "Coro::schedule");
		918
		919	UNLOCK;
		920
		921	transfer (aTHX_ SvSTATE (prev), SvSTATE (next),
860	TRANSFER_SAVE_ALL \| TRANSFER_LAZY_STACK);	922	TRANSFER_SAVE_ALL \| TRANSFER_LAZY_STACK);
861	SvREFCNT_dec (next);	923	}
862	SvREFCNT_dec (prev);	924
		925	static void
		926	api_cede (void)
		927	{
		928	LOCK;
		929	coro_enq (SvREFCNT_inc (SvRV (GvSV (coro_current))));
		930	UNLOCK;
		931
		932	api_schedule ();
863	}	933	}
864		934
865	MODULE = Coro::State PACKAGE = Coro::State	935	MODULE = Coro::State PACKAGE = Coro::State
866		936
867	PROTOTYPES: ENABLE	937	PROTOTYPES: ENABLE
868		938
869	BOOT:	939	BOOT:
870	{ /* {} necessary for stoopid perl-5.6.x */	940	{ /* {} necessary for stoopid perl-5.6.x */
		941	#ifdef USE_ITHREADS
		942	MUTEX_INIT (&coro_mutex);
		943	#endif
		944
871	ucoro_state_sv = newSVpv (UCORO_STATE, sizeof(UCORO_STATE) - 1);	945	ucoro_state_sv = newSVpv (UCORO_STATE, sizeof(UCORO_STATE) - 1);
872	PERL_HASH(ucoro_state_hash, UCORO_STATE, sizeof(UCORO_STATE) - 1);	946	PERL_HASH(ucoro_state_hash, UCORO_STATE, sizeof(UCORO_STATE) - 1);
873	coro_state_stash = gv_stashpv ("Coro::State", TRUE);	947	coro_state_stash = gv_stashpv ("Coro::State", TRUE);
874		948
875	newCONSTSUB (coro_state_stash, "SAVE_DEFAV", newSViv (TRANSFER_SAVE_DEFAV));	949	newCONSTSUB (coro_state_stash, "SAVE_DEFAV", newSViv (TRANSFER_SAVE_DEFAV));
876	newCONSTSUB (coro_state_stash, "SAVE_DEFSV", newSViv (TRANSFER_SAVE_DEFSV));	950	newCONSTSUB (coro_state_stash, "SAVE_DEFSV", newSViv (TRANSFER_SAVE_DEFSV));
877	newCONSTSUB (coro_state_stash, "SAVE_ERRSV", newSViv (TRANSFER_SAVE_ERRSV));	951	newCONSTSUB (coro_state_stash, "SAVE_ERRSV", newSViv (TRANSFER_SAVE_ERRSV));
878	newCONSTSUB (coro_state_stash, "SAVE_CCTXT", newSViv (TRANSFER_SAVE_CCTXT));	952	newCONSTSUB (coro_state_stash, "SAVE_CCTXT", newSViv (TRANSFER_SAVE_CCTXT));
879
880	if (!padlist_cache)
881	padlist_cache = newHV ();
882		953
883	main_mainstack = PL_mainstack;	954	main_mainstack = PL_mainstack;
884		955
885	coroapi.ver = CORO_API_VERSION;	956	coroapi.ver = CORO_API_VERSION;
886	coroapi.transfer = api_transfer;	957	coroapi.transfer = api_transfer;
…		…
894	Coro__State coro;	965	Coro__State coro;
895		966
896	if (!SvROK (args) \|\| SvTYPE (SvRV (args)) != SVt_PVAV)	967	if (!SvROK (args) \|\| SvTYPE (SvRV (args)) != SVt_PVAV)
897	croak ("Coro::State::_newprocess expects an arrayref");	968	croak ("Coro::State::_newprocess expects an arrayref");
898		969
899	New (0, coro, 1, struct coro);	970	Newz (0, coro, 1, struct coro);
900		971
901	coro->args = (AV *)SvREFCNT_inc (SvRV (args));	972	coro->args = (AV *)SvREFCNT_inc (SvRV (args));
902	coro->mainstack = 0; /* actual work is done inside transfer */	973	coro->mainstack = 0; /* actual work is done inside transfer */
903	coro->stack = 0;	974	coro->stack = 0;
904		975
		976	/* same as JMPENV_BOOTSTRAP */
		977	/* we might be able to recycle start_env, but safe is safe */
		978	//Zero(&coro->start_env, 1, JMPENV);
		979	coro->start_env.je_ret = -1;
		980	coro->start_env.je_mustcatch = TRUE;
		981
905	RETVAL = coro;	982	RETVAL = coro;
906	OUTPUT:	983	OUTPUT:
907	RETVAL	984	RETVAL
908		985
909	void	986	void
910	transfer(prev, next, flags)	987	transfer(prev, next, flags)
911	Coro::State_or_hashref prev	988	SV *prev
912	Coro::State_or_hashref next	989	SV *next
913	int flags	990	int flags
914	PROTOTYPE: @	991	PROTOTYPE: @
915	CODE:	992	CODE:
916	PUTBACK;	993	PUTBACK;
		994	SV_CORO (next, "Coro::transfer");
		995	SV_CORO (prev, "Coro::transfer");
917	transfer (aTHX_ prev, next, flags);	996	transfer (aTHX_ SvSTATE (prev), SvSTATE (next), flags);
918	SPAGAIN;	997	SPAGAIN;
919		998
920	void	999	void
921	DESTROY(coro)	1000	DESTROY(coro)
922	Coro::State coro	1001	Coro::State coro
…		…
938		1017
939	coro->mainstack = 0;	1018	coro->mainstack = 0;
940	}	1019	}
941		1020
942	deallocate_stack (coro);	1021	deallocate_stack (coro);
943		1022	SvREFCNT_dec (coro->args);
944	Safefree (coro);	1023	Safefree (coro);
945
946	void
947	flush()
948	CODE:
949	#ifdef MAY_FLUSH
950	flush_padlist_cache ();
951	#endif
952		1024
953	void	1025	void
954	_exit(code)	1026	_exit(code)
955	int code	1027	int code
956	PROTOTYPE: $	1028	PROTOTYPE: $
957	CODE:	1029	CODE:
958	#if defined(__GLIBC__) \|\| _POSIX_C_SOURCE
959	_exit (code);	1030	_exit (code);
960	#else
961	signal (SIGTERM, SIG_DFL);
962	raise (SIGTERM);
963	exit (code);
964	#endif
965		1031
966	MODULE = Coro::State PACKAGE = Coro::Cont	1032	MODULE = Coro::State PACKAGE = Coro::Cont
967		1033
968	# this is slightly dirty (should expose a c-level api)	1034	# this is slightly dirty (should expose a c-level api)
969		1035
…		…
975	SV *sv;	1041	SV *sv;
976	AV *defav = GvAV (PL_defgv);	1042	AV *defav = GvAV (PL_defgv);
977	struct coro prev, next;	1043	struct coro prev, next;
978		1044
979	if (!returnstk)	1045	if (!returnstk)
980	returnstk = SvRV (get_sv ("Coro::Cont::return", FALSE));	1046	returnstk = SvRV ((SV *)get_sv ("Coro::Cont::return", FALSE));
981		1047
982	/* set up @_ -- ugly */	1048	/* set up @_ -- ugly */
983	av_clear (defav);	1049	av_clear (defav);
984	av_fill (defav, items - 1);	1050	av_fill (defav, items - 1);
985	while (items--)	1051	while (items--)
…		…
1017		1083
1018	{	1084	{
1019	SV *sv = perl_get_sv("Coro::API", 1);	1085	SV *sv = perl_get_sv("Coro::API", 1);
1020		1086
1021	coroapi.schedule = api_schedule;	1087	coroapi.schedule = api_schedule;
		1088	coroapi.cede = api_cede;
1022	coroapi.ready = api_ready;	1089	coroapi.ready = api_ready;
1023	coroapi.nready = &coro_nready;	1090	coroapi.nready = &coro_nready;
1024	coroapi.current = coro_current;	1091	coroapi.current = coro_current;
1025		1092
1026	GCoroAPI = &coroapi;	1093	GCoroAPI = &coroapi;
1027	sv_setiv(sv, (IV)&coroapi);	1094	sv_setiv(sv, (IV)&coroapi);
1028	SvREADONLY_on(sv);	1095	SvREADONLY_on(sv);
1029	}	1096	}
1030	}	1097	}
1031		1098
		1099	#if !PERL_MICRO
		1100
1032	void	1101	void
1033	ready(self)	1102	ready(self)
1034	SV * self	1103	SV * self
		1104	PROTOTYPE: $
1035	CODE:	1105	CODE:
1036	api_ready (self);	1106	api_ready (self);
		1107
		1108	#endif
1037		1109
1038	int	1110	int
1039	nready(...)	1111	nready(...)
1040	PROTOTYPE:	1112	PROTOTYPE:
1041	CODE:	1113	CODE:
…		…
1044	RETVAL	1116	RETVAL
1045		1117
1046	void	1118	void
1047	schedule(...)	1119	schedule(...)
1048	PROTOTYPE:	1120	PROTOTYPE:
1049	ALIAS:
1050	cede = 1
1051	CODE:	1121	CODE:
1052	api_schedule (ix);	1122	api_schedule ();
1053		1123
		1124	void
		1125	cede(...)
		1126	PROTOTYPE:
		1127	CODE:
		1128	api_cede ();
		1129

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Comparing Coro/Coro/State.xs (file contents): Revision 1.29 by root, Sat Aug 25 21:40:34 2001 UTC vs. Revision 1.55 by pcg, Thu Apr 1 02:29:05 2004 UTC

Diff Legend

Comparing Coro/Coro/State.xs (file contents):
Revision 1.29 by root, Sat Aug 25 21:40:34 2001 UTC vs.
Revision 1.55 by pcg, Thu Apr 1 02:29:05 2004 UTC