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

Comparing Coro/Coro/State.xs (file contents):
Revision 1.20 by root, Fri Aug 3 12:51:56 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 */
22
23	/* perl-related */
24	#define TRANSFER_SAVE_DEFAV 0x00000001
25	#define TRANSFER_SAVE_DEFSV 0x00000002
26	#define TRANSFER_SAVE_ERRSV 0x00000004
27	/* c-related */
28	#define TRANSFER_SAVE_CCTXT 0x00000008
29	#ifdef CORO_LAZY_STACK
30	# define TRANSFER_LAZY_STACK 0x00000010
31	#else
32	# define TRANSFER_LAZY_STACK 0x00000000
33	#endif
34
35	#define TRANSFER_SAVE_ALL (TRANSFER_SAVE_DEFAV\|TRANSFER_SAVE_DEFSV \
36	\|TRANSFER_SAVE_ERRSV\|TRANSFER_SAVE_CCTXT)
37
38	#define SUB_INIT "Coro::State::initialize"	44	#define SUB_INIT "Coro::State::initialize"
39	#define UCORO_STATE "_coro_state"	45	#define UCORO_STATE "_coro_state"
40		46
41	/* The next macro should delcare a variable stacklevel that contains and approximation	47	/* The next macro should declare a variable stacklevel that contains and approximation
42	* to the current C stack pointer. It's property is that it changes with each call	48	* to the current C stack pointer. Its property is that it changes with each call
43	* and should be unique. */	49	* and should be unique. */
44	#define dSTACKLEVEL void *stacklevel = &stacklevel	50	#define dSTACKLEVEL void *stacklevel = &stacklevel
45		51
		52	#define IN_DESTRUCT (PL_main_cv == Nullcv)
		53
46	#define labs(l) ((l) >= 0 ? (l) : -(l))	54	#define labs(l) ((l) >= 0 ? (l) : -(l))
		55
		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
		66
		67	static struct CoroAPI coroapi;
47		68
48	/* 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... */
49	typedef struct {	70	typedef struct {
50	int refcnt; /* pointer reference counter */	71	int refcnt; /* pointer reference counter */
51	int usecnt; /* shared by how many coroutines */	72	int usecnt; /* shared by how many coroutines */
56	void *sptr;	77	void *sptr;
57	long ssize; /* positive == mmap, otherwise malloc */	78	long ssize; /* positive == mmap, otherwise malloc */
58	} coro_stack;	79	} coro_stack;
59		80
60	struct coro {	81	struct coro {
		82	/* the top-level JMPENV for each coroutine, needed to catch dies. */
		83	JMPENV start_env;
		84
61	/* the optional C context */	85	/* the optional C context */
62	coro_stack *stack;	86	coro_stack *stack;
63	void *cursp;	87	void *cursp;
64	int gencnt;	88	int gencnt;
65		89
…		…
77	AV *curstack;	101	AV *curstack;
78	AV *mainstack;	102	AV *mainstack;
79	SV **stack_sp;	103	SV **stack_sp;
80	OP *op;	104	OP *op;
81	SV **curpad;	105	SV **curpad;
		106	AV *comppad;
82	SV **stack_base;	107	SV **stack_base;
83	SV **stack_max;	108	SV **stack_max;
84	SV **tmps_stack;	109	SV **tmps_stack;
85	I32 tmps_floor;	110	I32 tmps_floor;
86	I32 tmps_ix;	111	I32 tmps_ix;
…		…
109		134
110	static AV main_mainstack; / used to differentiate between $main and others */	135	static AV main_mainstack; / used to differentiate between $main and others */
111	static HV *coro_state_stash;	136	static HV *coro_state_stash;
112	static SV *ucoro_state_sv;	137	static SV *ucoro_state_sv;
113	static U32 ucoro_state_hash;	138	static U32 ucoro_state_hash;
114	static HV *padlist_cache;	139	static SV coro_mortal; / will be freed after next transfer */
115		140
116	/* mostly copied from op.c:cv_clone2 */	141	/* mostly copied from op.c:cv_clone2 */
117	STATIC AV *	142	STATIC AV *
118	clone_padlist (AV *protopadlist)	143	clone_padlist (AV *protopadlist)
119	{	144	{
…		…
147	AvFLAGS (av) = AVf_REIFY;	172	AvFLAGS (av) = AVf_REIFY;
148		173
149	for (ix = fpad; ix > 0; ix--)	174	for (ix = fpad; ix > 0; ix--)
150	{	175	{
151	SV *namesv = (ix <= fname) ? pname[ix] : Nullsv;	176	SV *namesv = (ix <= fname) ? pname[ix] : Nullsv;
		177
152	if (namesv && namesv != &PL_sv_undef)	178	if (namesv && namesv != &PL_sv_undef)
153	{	179	{
154	char name = SvPVX (namesv); / XXX */	180	char name = SvPVX (namesv); / XXX */
		181
155	if (SvFLAGS (namesv) & SVf_FAKE \|\| *name == '&')	182	if (SvFLAGS (namesv) & SVf_FAKE \|\| *name == '&')
156	{ /* lexical from outside? */	183	{ /* lexical from outside? */
157	npad[ix] = SvREFCNT_inc (ppad[ix]);	184	npad[ix] = SvREFCNT_inc (ppad[ix]);
158	}	185	}
159	else	186	else
…		…
165	sv = (SV *) newAV ();	192	sv = (SV *) newAV ();
166	else if (*name == '%')	193	else if (*name == '%')
167	sv = (SV *) newHV ();	194	sv = (SV *) newHV ();
168	else	195	else
169	sv = NEWSV (0, 0);	196	sv = NEWSV (0, 0);
		197
		198	#ifdef SvPADBUSY
170	if (!SvPADBUSY (sv))	199	if (!SvPADBUSY (sv))
		200	#endif
171	SvPADMY_on (sv);	201	SvPADMY_on (sv);
		202
172	npad[ix] = sv;	203	npad[ix] = sv;
173	}	204	}
174	}	205	}
175	else if (IS_PADGV (ppad[ix]) \|\| IS_PADCONST (ppad[ix]))	206	else if (IS_PADGV (ppad[ix]) \|\| IS_PADCONST (ppad[ix]))
176	{	207	{
…		…
205	#endif	236	#endif
206		237
207	return newpadlist;	238	return newpadlist;
208	}	239	}
209		240
210	#ifdef MAY_FLUSH	241	STATIC void
211	STATIC AV *
212	free_padlist (AV *padlist)	242	free_padlist (AV *padlist)
213	{	243	{
214	/* may be during global destruction */	244	/* may be during global destruction */
215	if (SvREFCNT(padlist))	245	if (SvREFCNT (padlist))
216	{	246	{
217	I32 i = AvFILLp(padlist);	247	I32 i = AvFILLp (padlist);
218	while (i >= 0)	248	while (i >= 0)
219	{	249	{
220	SV **svp = av_fetch(padlist, i--, FALSE);	250	SV **svp = av_fetch (padlist, i--, FALSE);
221	SV sv = svp ? svp : Nullsv;
222	if (sv)	251	if (svp)
		252	{
		253	SV *sv;
		254	while (&PL_sv_undef != (sv = av_pop ((AV )svp)))
223	SvREFCNT_dec(sv);	255	SvREFCNT_dec (sv);
		256
		257	SvREFCNT_dec (*svp);
		258	}
224	}	259	}
225		260
226	SvREFCNT_dec((SV*)padlist);	261	SvREFCNT_dec ((SV*)padlist);
227	}	262	}
228	}	263	}
229	#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};
230		279
231	/* the next two functions merely cache the padlists */	280	/* the next two functions merely cache the padlists */
232	STATIC void	281	STATIC void
233	get_padlist (CV *cv)	282	get_padlist (CV *cv)
234	{	283	{
235	SV *he = hv_fetch (padlist_cache, (void )&cv, sizeof (CV *), 0);	284	MAGIC mg = mg_find ((SV )cv, PERL_MAGIC_coro);
236		285
237	if (he && AvFILLp ((AV )he) >= 0)	286	if (mg && AvFILLp ((AV *)mg->mg_obj) >= 0)
238	CvPADLIST (cv) = (AV )av_pop ((AV )*he);	287	CvPADLIST (cv) = (AV )av_pop ((AV )mg->mg_obj);
239	else	288	else
240	CvPADLIST (cv) = clone_padlist (CvPADLIST (cv));	289	CvPADLIST (cv) = clone_padlist (CvPADLIST (cv));
241	}	290	}
242		291
243	STATIC void	292	STATIC void
244	put_padlist (CV *cv)	293	put_padlist (CV *cv)
245	{	294	{
246	SV *he = hv_fetch (padlist_cache, (void )&cv, sizeof (CV *), 1);	295	MAGIC mg = mg_find ((SV )cv, PERL_MAGIC_coro);
247		296
248	if (SvTYPE (*he) != SVt_PVAV)	297	if (!mg)
249	{	298	{
250	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;
251	he = (SV )newAV ();	302	mg->mg_obj = (SV *)newAV ();
252	}	303	}
253		304
254	av_push ((AV )he, (SV *)CvPADLIST (cv));	305	av_push ((AV )mg->mg_obj, (SV )CvPADLIST (cv));
255	}	306	}
256
257	#ifdef MAY_FLUSH
258	STATIC void
259	flush_padlist_cache ()
260	{
261	HV *hv = padlist_cache;
262	padlist_cache = newHV ();
263
264	if (hv_iterinit (hv))
265	{
266	HE *he;
267	AV *padlist;
268
269	while (!!(he = hv_iternext (hv)))
270	{
271	AV av = (AV )HeVAL(he);
272
273	/* casting is fun. */
274	while (&PL_sv_undef != (SV )(padlist = (AV )av_pop (av)))
275	free_padlist (padlist);
276	}
277	}
278
279	SvREFCNT_dec (hv);
280	}
281	#endif
282		307
283	#define SB do {	308	#define SB do {
284	#define SE } while (0)	309	#define SE } while (0)
285		310
286	#define LOAD(state) SB load_state(aTHX_ (state)); SPAGAIN; SE	311	#define LOAD(state) load_state(aTHX_ (state));
287	#define SAVE(state,flags) SB PUTBACK; save_state(aTHX_ (state),(flags)); SE	312	#define SAVE(state,flags) save_state(aTHX_ (state),(flags));
288		313
289	#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
290		315
291	static void	316	static void
292	load_state(pTHX_ Coro__State c)	317	load_state(pTHX_ Coro__State c)
293	{	318	{
294	PL_dowarn = c->dowarn;	319	PL_dowarn = c->dowarn;
…		…
298	PL_curstack = c->curstack;	323	PL_curstack = c->curstack;
299	PL_mainstack = c->mainstack;	324	PL_mainstack = c->mainstack;
300	PL_stack_sp = c->stack_sp;	325	PL_stack_sp = c->stack_sp;
301	PL_op = c->op;	326	PL_op = c->op;
302	PL_curpad = c->curpad;	327	PL_curpad = c->curpad;
		328	PL_comppad = c->comppad;
303	PL_stack_base = c->stack_base;	329	PL_stack_base = c->stack_base;
304	PL_stack_max = c->stack_max;	330	PL_stack_max = c->stack_max;
305	PL_tmps_stack = c->tmps_stack;	331	PL_tmps_stack = c->tmps_stack;
306	PL_tmps_floor = c->tmps_floor;	332	PL_tmps_floor = c->tmps_floor;
307	PL_tmps_ix = c->tmps_ix;	333	PL_tmps_ix = c->tmps_ix;
…		…
336		362
337	if (padlist)	363	if (padlist)
338	{	364	{
339	put_padlist (cv); /* mark this padlist as available */	365	put_padlist (cv); /* mark this padlist as available */
340	CvPADLIST(cv) = padlist;	366	CvPADLIST(cv) = padlist;
341	#ifdef USE_THREADS
342	/CvOWNER(cv) = (struct perl_thread )POPs;*/
343	#endif
344	}	367	}
345		368
346	++CvDEPTH(cv);	369	++CvDEPTH(cv);
347	}	370	}
348		371
…		…
366		389
367	PUSHs (Nullsv);	390	PUSHs (Nullsv);
368	/* this loop was inspired by pp_caller */	391	/* this loop was inspired by pp_caller */
369	for (;;)	392	for (;;)
370	{	393	{
371	do	394	while (cxix >= 0)
372	{	395	{
373	PERL_CONTEXT *cx = &ccstk[cxix--];	396	PERL_CONTEXT *cx = &ccstk[cxix--];
374		397
375	if (CxTYPE(cx) == CXt_SUB)	398	if (CxTYPE(cx) == CXt_SUB)
376	{	399	{
377	CV *cv = cx->blk_sub.cv;	400	CV *cv = cx->blk_sub.cv;
378	if (CvDEPTH(cv))	401	if (CvDEPTH(cv))
379	{	402	{
380	#ifdef USE_THREADS
381	/XPUSHs ((SV )CvOWNER(cv));*/
382	/CvOWNER(cv) = 0;/
383	/error must unlock this cv etc.. etc.../
384	#endif
385	EXTEND (SP, CvDEPTH(cv)*2);	403	EXTEND (SP, CvDEPTH(cv)*2);
386		404
387	while (--CvDEPTH(cv))	405	while (--CvDEPTH(cv))
388	{	406	{
389	/* this tells the restore code to increment CvDEPTH */	407	/* this tells the restore code to increment CvDEPTH */
…		…
395	PUSHs ((SV *)cv);	413	PUSHs ((SV *)cv);
396		414
397	get_padlist (cv); /* this is a monster */	415	get_padlist (cv); /* this is a monster */
398	}	416	}
399	}	417	}
		418	#ifdef CXt_FORMAT
400	else if (CxTYPE(cx) == CXt_FORMAT)	419	else if (CxTYPE(cx) == CXt_FORMAT)
401	{	420	{
402	/* 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? */
403	/* my bold guess is as a simple, plain sub... */	422	/* my bold guess is as a simple, plain sub... */
404	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");
405	}	424	}
		425	#endif
406	}	426	}
407	while (cxix >= 0);
408		427
409	if (top_si->si_type == PERLSI_MAIN)	428	if (top_si->si_type == PERLSI_MAIN)
410	break;	429	break;
411		430
412	top_si = top_si->si_prev;	431	top_si = top_si->si_prev;
…		…
418	}	437	}
419		438
420	c->defav = flags & TRANSFER_SAVE_DEFAV ? (AV *)SvREFCNT_inc (GvAV (PL_defgv)) : 0;	439	c->defav = flags & TRANSFER_SAVE_DEFAV ? (AV *)SvREFCNT_inc (GvAV (PL_defgv)) : 0;
421	c->defsv = flags & TRANSFER_SAVE_DEFSV ? SvREFCNT_inc (DEFSV) : 0;	440	c->defsv = flags & TRANSFER_SAVE_DEFSV ? SvREFCNT_inc (DEFSV) : 0;
422	c->errsv = flags & TRANSFER_SAVE_ERRSV ? SvREFCNT_inc (ERRSV) : 0;	441	c->errsv = flags & TRANSFER_SAVE_ERRSV ? SvREFCNT_inc (ERRSV) : 0;
423
424	/* I have not the slightest idea of why av_reify is necessary */
425	/* but if it's missing the defav contents magically get replaced sometimes */
426	if (c->defav)
427	av_reify (c->defav);
428		442
429	c->dowarn = PL_dowarn;	443	c->dowarn = PL_dowarn;
430	c->in_eval = PL_in_eval;	444	c->in_eval = PL_in_eval;
431		445
432	c->curstackinfo = PL_curstackinfo;	446	c->curstackinfo = PL_curstackinfo;
433	c->curstack = PL_curstack;	447	c->curstack = PL_curstack;
434	c->mainstack = PL_mainstack;	448	c->mainstack = PL_mainstack;
435	c->stack_sp = PL_stack_sp;	449	c->stack_sp = PL_stack_sp;
436	c->op = PL_op;	450	c->op = PL_op;
437	c->curpad = PL_curpad;	451	c->curpad = PL_curpad;
		452	c->comppad = PL_comppad;
438	c->stack_base = PL_stack_base;	453	c->stack_base = PL_stack_base;
439	c->stack_max = PL_stack_max;	454	c->stack_max = PL_stack_max;
440	c->tmps_stack = PL_tmps_stack;	455	c->tmps_stack = PL_tmps_stack;
441	c->tmps_floor = PL_tmps_floor;	456	c->tmps_floor = PL_tmps_floor;
442	c->tmps_ix = PL_tmps_ix;	457	c->tmps_ix = PL_tmps_ix;
…		…
458	}	473	}
459		474
460	/*	475	/*
461	* allocate various perl stacks. This is an exact copy	476	* allocate various perl stacks. This is an exact copy
462	* of perl.c:init_stacks, except that it uses less memory	477	* of perl.c:init_stacks, except that it uses less memory
463	* on the assumption that coroutines do not usually need	478	* on the (sometimes correct) assumption that coroutines do
464	* a lot of stackspace.	479	* not usually need a lot of stackspace.
465	*/	480	*/
466	STATIC void	481	STATIC void
467	coro_init_stacks (pTHX)	482	coro_init_stacks (pTHX)
468	{	483	{
		484	LOCK;
		485
469	PL_curstackinfo = new_stackinfo(96, 1024/sizeof(PERL_CONTEXT) - 1);	486	PL_curstackinfo = new_stackinfo(96, 1024/sizeof(PERL_CONTEXT) - 1);
470	PL_curstackinfo->si_type = PERLSI_MAIN;	487	PL_curstackinfo->si_type = PERLSI_MAIN;
471	PL_curstack = PL_curstackinfo->si_stack;	488	PL_curstack = PL_curstackinfo->si_stack;
472	PL_mainstack = PL_curstack; /* remember in case we switch stacks */	489	PL_mainstack = PL_curstack; /* remember in case we switch stacks */
473		490
…		…
482		499
483	New(54,PL_markstack,16,I32);	500	New(54,PL_markstack,16,I32);
484	PL_markstack_ptr = PL_markstack;	501	PL_markstack_ptr = PL_markstack;
485	PL_markstack_max = PL_markstack + 16;	502	PL_markstack_max = PL_markstack + 16;
486		503
		504	#ifdef SET_MARK_OFFSET
487	SET_MARK_OFFSET;	505	SET_MARK_OFFSET;
		506	#endif
488		507
489	New(54,PL_scopestack,16,I32);	508	New(54,PL_scopestack,16,I32);
490	PL_scopestack_ix = 0;	509	PL_scopestack_ix = 0;
491	PL_scopestack_max = 16;	510	PL_scopestack_max = 16;
492		511
…		…
495	PL_savestack_max = 96;	514	PL_savestack_max = 96;
496		515
497	New(54,PL_retstack,8,OP*);	516	New(54,PL_retstack,8,OP*);
498	PL_retstack_ix = 0;	517	PL_retstack_ix = 0;
499	PL_retstack_max = 8;	518	PL_retstack_max = 8;
		519
		520	UNLOCK;
500	}	521	}
501		522
502	/*	523	/*
503	* destroy the stacks, the callchain etc...	524	* destroy the stacks, the callchain etc...
504	* still there is a memleak of 128 bytes...
505	*/	525	*/
506	STATIC void	526	STATIC void
507	destroy_stacks(pTHX)	527	destroy_stacks(pTHX)
508	{	528	{
		529	if (!IN_DESTRUCT)
		530	{
509	/* is this ugly, I ask? */	531	/* is this ugly, I ask? */
510	while (PL_scopestack_ix)	532	LEAVE_SCOPE (0);
511	LEAVE;
512		533
513	/* sure it is, but more important: is it correct?? :/ */	534	/* sure it is, but more important: is it correct?? :/ */
514	while (PL_tmps_ix > PL_tmps_floor) /* should only ever be one iteration */
515	FREETMPS;	535	FREETMPS;
		536	}
516		537
517	while (PL_curstackinfo->si_next)	538	while (PL_curstackinfo->si_next)
518	PL_curstackinfo = PL_curstackinfo->si_next;	539	PL_curstackinfo = PL_curstackinfo->si_next;
519		540
520	while (PL_curstackinfo)	541	while (PL_curstackinfo)
…		…
525	dSP;	546	dSP;
526	SWITCHSTACK (PL_curstack, PL_curstackinfo->si_stack);	547	SWITCHSTACK (PL_curstack, PL_curstackinfo->si_stack);
527	PUTBACK; /* possibly superfluous */	548	PUTBACK; /* possibly superfluous */
528	}	549	}
529		550
		551	if (!IN_DESTRUCT)
		552	{
530	dounwind(-1);	553	dounwind(-1);
531
532	SvREFCNT_dec(PL_curstackinfo->si_stack);	554	SvREFCNT_dec(PL_curstackinfo->si_stack);
		555	}
		556
533	Safefree(PL_curstackinfo->si_cxstack);	557	Safefree(PL_curstackinfo->si_cxstack);
534	Safefree(PL_curstackinfo);	558	Safefree(PL_curstackinfo);
535	PL_curstackinfo = p;	559	PL_curstackinfo = p;
536	}	560	}
537		561
…		…
550	New (0, stack, 1, coro_stack);	574	New (0, stack, 1, coro_stack);
551		575
552	stack->refcnt = 1;	576	stack->refcnt = 1;
553	stack->usecnt = 1;	577	stack->usecnt = 1;
554	stack->gencnt = ctx->gencnt = 0;	578	stack->gencnt = ctx->gencnt = 0;
		579
555	if (alloc)	580	if (alloc)
556	{	581	{
557	#ifdef HAVE_MMAP	582	#if HAVE_MMAP
558	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 */
559	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);
560	if (stack->sptr == (void *)-1)	585	if (stack->sptr == (void *)-1)
561	#endif	586	#endif
562	{	587	{
563	/FIXME//D//* reasonable stack size! */	588	/FIXME//D//* reasonable stack size! */
564	stack->ssize = -4096 * sizeof (long);	589	stack->ssize = - (8192 * sizeof (long));
565	New (0, stack->sptr, 4096, long);	590	New (0, stack->sptr, 8192, long);
566	}	591	}
567	}	592	}
568	else	593	else
569	stack->sptr = 0;	594	stack->sptr = 0;
570		595
…		…
584	{	609	{
585	#ifdef HAVE_MMAP	610	#ifdef HAVE_MMAP
586	if (stack->ssize > 0 && stack->sptr)	611	if (stack->ssize > 0 && stack->sptr)
587	munmap (stack->sptr, stack->ssize);	612	munmap (stack->sptr, stack->ssize);
588	else	613	else
589	#else	614	#endif
590	Safefree (stack->sptr);	615	Safefree (stack->sptr);
591	#endif	616
592	Safefree (stack);	617	Safefree (stack);
593	}	618	}
594	else if (ctx->gencnt == stack->gencnt)	619	else if (ctx->gencnt == stack->gencnt)
595	--stack->usecnt;	620	--stack->usecnt;
596	}	621	}
…		…
602	/*	627	/*
603	* emulate part of the perl startup here.	628	* emulate part of the perl startup here.
604	*/	629	*/
605	dSP;	630	dSP;
606	Coro__State ctx = (Coro__State)arg;	631	Coro__State ctx = (Coro__State)arg;
607	SV sub_init = (SV)get_cv(SUB_INIT, FALSE);	632	SV sub_init = (SV )get_cv (SUB_INIT, FALSE);
608		633
609	coro_init_stacks (aTHX);	634	coro_init_stacks (aTHX);
610	/PL_curcop = 0;/	635	/PL_curcop = 0;/
611	/PL_in_eval = PL_in_eval;/ /* inherit */	636	/PL_in_eval = PL_in_eval;/ /* inherit */
612	SvREFCNT_dec (GvAV (PL_defgv));	637	SvREFCNT_dec (GvAV (PL_defgv));
613	GvAV (PL_defgv) = ctx->args;	638	GvAV (PL_defgv) = ctx->args; ctx->args = 0;
614		639
615	SPAGAIN;	640	SPAGAIN;
616		641
617	if (ctx->stack)	642	if (ctx->stack)
618	{	643	{
…		…
645	* that doesn't matter, though, since it is only	670	* that doesn't matter, though, since it is only
646	* pp_nextstate and we never return...	671	* pp_nextstate and we never return...
647	* ah yes, and I don't care anyways ;)	672	* ah yes, and I don't care anyways ;)
648	*/	673	*/
649	PUTBACK;	674	PUTBACK;
650	PL_op = pp_entersub();	675	PL_op = PL_ppaddr[OP_ENTERSUB](aTHX);
651	SPAGAIN;	676	SPAGAIN;
652		677
653	ENTER; /* necessary e.g. for dounwind */	678	ENTER; /* necessary e.g. for dounwind */
654	}	679	}
655	}	680	}
…		…
659	{	684	{
660	/*	685	/*
661	* this is a _very_ stripped down perl interpreter ;)	686	* this is a _very_ stripped down perl interpreter ;)
662	*/	687	*/
663	Coro__State ctx = (Coro__State)arg;	688	Coro__State ctx = (Coro__State)arg;
		689	JMPENV coro_start_env;
664		690
665	/FIXME//* must set up top_env here */	691	PL_top_env = &ctx->start_env;
		692
666	ctx->cursp = 0;	693	ctx->cursp = 0;
667	PL_op = PL_op->op_next;	694	PL_op = PL_op->op_next;
668	CALLRUNOPS(aTHX);	695	CALLRUNOPS(aTHX);
669		696
670	abort ();	697	abort ();
671	}	698	}
672		699
673	STATIC void	700	STATIC void
674	transfer(pTHX_ struct coro prev, struct coro next, int flags)	701	transfer (pTHX_ struct coro prev, struct coro next, int flags)
675	{	702	{
676	dSP;
677	dSTACKLEVEL;	703	dSTACKLEVEL;
678		704
679	if (prev != next)	705	if (prev != next)
680	{	706	{
681	if (next->mainstack)	707	if (next->mainstack)
682	{	708	{
		709	LOCK;
683	SAVE (prev, flags);	710	SAVE (prev, flags);
684	LOAD (next);	711	LOAD (next);
		712	UNLOCK;
685		713
686	/* mark this state as in-use */	714	/* mark this state as in-use */
687	next->mainstack = 0;	715	next->mainstack = 0;
688	next->tmps_ix = -2;	716	next->tmps_ix = -2;
689		717
…		…
708	continue_coro, (void *)next,	736	continue_coro, (void *)next,
709	next->stack->sptr, labs (next->stack->ssize));	737	next->stack->sptr, labs (next->stack->ssize));
710	}	738	}
711		739
712	coro_transfer (&(prev->stack->cctx), &(next->stack->cctx));	740	coro_transfer (&(prev->stack->cctx), &(next->stack->cctx));
		741	prev->cursp = stacklevel;
		742	/* don't add any code here */
713	}	743	}
714		744	else
		745	next->cursp = stacklevel;
715	}	746	}
716	else if (next->tmps_ix == -2)	747	else if (next->tmps_ix == -2)
717	croak ("tried to transfer to running coroutine");	748	croak ("tried to transfer to running coroutine");
718	else	749	else
719	{	750	{
		751	LOCK;
720	SAVE (prev, -1); /* first get rid of the old state */	752	SAVE (prev, -1); /* first get rid of the old state */
		753	UNLOCK;
721		754
722	if (flags & TRANSFER_SAVE_CCTXT)	755	if (flags & TRANSFER_SAVE_CCTXT)
723	{	756	{
724	if (!prev->stack)	757	if (!prev->stack)
725	allocate_stack (prev, 0);	758	allocate_stack (prev, 0);
726		759
727	if (prev->stack->sptr && flags & TRANSFER_LAZY_STACK)	760	if (prev->stack->sptr && flags & TRANSFER_LAZY_STACK)
728	{	761	{
		762	PL_top_env = &next->start_env;
		763
729	setup_coro (next);	764	setup_coro (next);
		765	next->cursp = stacklevel;
730		766
731	prev->stack->refcnt++;	767	prev->stack->refcnt++;
732	prev->stack->usecnt++;	768	prev->stack->usecnt++;
733	next->stack = prev->stack;	769	next->stack = prev->stack;
734	next->gencnt = prev->gencnt;	770	next->gencnt = prev->gencnt;
735	}	771	}
736	else	772	else
737	{	773	{
		774	assert (!next->stack);
738	allocate_stack (next, 1);	775	allocate_stack (next, 1);
739	coro_create (&(next->stack->cctx),	776	coro_create (&(next->stack->cctx),
740	setup_coro, (void *)next,	777	setup_coro, (void *)next,
741	next->stack->sptr, labs (next->stack->ssize));	778	next->stack->sptr, labs (next->stack->ssize));
742	coro_transfer (&(prev->stack->cctx), &(next->stack->cctx));	779	coro_transfer (&(prev->stack->cctx), &(next->stack->cctx));
		780	prev->cursp = stacklevel;
		781	/* don't add any code here */
743	}	782	}
744	}	783	}
745	else	784	else
		785	{
746	setup_coro (next);	786	setup_coro (next);
		787	next->cursp = stacklevel;
		788	}
747	}	789	}
748	}	790	}
749		791
750	next->cursp = stacklevel;	792	LOCK;
		793	if (coro_mortal)
		794	{
		795	SvREFCNT_dec (coro_mortal);
		796	coro_mortal = 0;
		797	}
		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	\
		816	/* must also be changed inside Coro::Cont::yield */ \
		817	if (!SvOBJECT (sv) \|\| SvSTASH (sv) != coro_state_stash) \
		818	croak ("%s() -- %s is not (and contains not) a Coro::State object", func, # sv); \
		819	\
		820	} while(0)
		821
		822	#define SvSTATE(sv) (struct coro *)SvIV (sv)
		823
		824	static void
		825	api_transfer(pTHX_ SV prev, SV next, int flags)
		826	{
		827	SV_CORO (prev, "Coro::transfer");
		828	SV_CORO (next, "Coro::transfer");
		829
		830	transfer(aTHX_ SvSTATE(prev), SvSTATE(next), flags);
		831	}
		832
		833	/ Coro ******************************************************************/
		834
		835	#define PRIO_MAX 3
		836	#define PRIO_HIGH 1
		837	#define PRIO_NORMAL 0
		838	#define PRIO_LOW -1
		839	#define PRIO_IDLE -3
		840	#define PRIO_MIN -4
		841
		842	/* for Coro.pm */
		843	static GV coro_current, coro_idle;
		844	static AV *coro_ready[PRIO_MAX-PRIO_MIN+1];
		845	static int coro_nready;
		846
		847	static void
		848	coro_enq (SV *sv)
		849	{
		850	if (SvTYPE (sv) == SVt_PVHV)
		851	{
		852	SV *xprio = hv_fetch ((HV )sv, "prio", 4, 0);
		853	int prio = xprio ? SvIV (*xprio) : PRIO_NORMAL;
		854
		855	prio = prio > PRIO_MAX ? PRIO_MAX
		856	: prio < PRIO_MIN ? PRIO_MIN
		857	: prio;
		858
		859	av_push (coro_ready [prio - PRIO_MIN], sv);
		860	coro_nready++;
		861
		862	return;
		863	}
		864
		865	croak ("Coro::ready tried to enqueue something that is not a coroutine");
		866	}
		867
		868	static SV *
		869	coro_deq (int min_prio)
		870	{
		871	int prio = PRIO_MAX - PRIO_MIN;
		872
		873	min_prio -= PRIO_MIN;
		874	if (min_prio < 0)
		875	min_prio = 0;
		876
		877	for (prio = PRIO_MAX - PRIO_MIN + 1; --prio >= min_prio; )
		878	if (av_len (coro_ready[prio]) >= 0)
		879	{
		880	coro_nready--;
		881	return av_shift (coro_ready[prio]);
		882	}
		883
		884	return 0;
		885	}
		886
		887	static void
		888	api_ready (SV *coro)
		889	{
		890	if (SvROK (coro))
		891	coro = SvRV (coro);
		892
		893	LOCK;
		894	coro_enq (SvREFCNT_inc (coro));
		895	UNLOCK;
		896	}
		897
		898	static void
		899	api_schedule (void)
		900	{
		901	SV prev, next;
		902
		903	LOCK;
		904
		905	prev = SvRV (GvSV (coro_current));
		906	next = coro_deq (PRIO_MIN);
		907
		908	if (!next)
		909	next = SvREFCNT_inc (SvRV (GvSV (coro_idle)));
		910
		911	/* free this only after the transfer */
		912	coro_mortal = prev;
		913	SV_CORO (prev, "Coro::schedule");
		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),
		922	TRANSFER_SAVE_ALL \| TRANSFER_LAZY_STACK);
		923	}
		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 ();
751	}	933	}
752		934
753	MODULE = Coro::State PACKAGE = Coro::State	935	MODULE = Coro::State PACKAGE = Coro::State
754		936
755	PROTOTYPES: ENABLE	937	PROTOTYPES: ENABLE
756		938
757	BOOT:	939	BOOT:
758	{ /* {} 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
759	ucoro_state_sv = newSVpv (UCORO_STATE, sizeof(UCORO_STATE) - 1);	945	ucoro_state_sv = newSVpv (UCORO_STATE, sizeof(UCORO_STATE) - 1);
760	PERL_HASH(ucoro_state_hash, UCORO_STATE, sizeof(UCORO_STATE) - 1);	946	PERL_HASH(ucoro_state_hash, UCORO_STATE, sizeof(UCORO_STATE) - 1);
761	coro_state_stash = gv_stashpv ("Coro::State", TRUE);	947	coro_state_stash = gv_stashpv ("Coro::State", TRUE);
762		948
763	newCONSTSUB (coro_state_stash, "SAVE_DEFAV", newSViv (TRANSFER_SAVE_DEFAV));	949	newCONSTSUB (coro_state_stash, "SAVE_DEFAV", newSViv (TRANSFER_SAVE_DEFAV));
764	newCONSTSUB (coro_state_stash, "SAVE_DEFSV", newSViv (TRANSFER_SAVE_DEFSV));	950	newCONSTSUB (coro_state_stash, "SAVE_DEFSV", newSViv (TRANSFER_SAVE_DEFSV));
765	newCONSTSUB (coro_state_stash, "SAVE_ERRSV", newSViv (TRANSFER_SAVE_ERRSV));	951	newCONSTSUB (coro_state_stash, "SAVE_ERRSV", newSViv (TRANSFER_SAVE_ERRSV));
766	newCONSTSUB (coro_state_stash, "SAVE_CCTXT", newSViv (TRANSFER_SAVE_CCTXT));	952	newCONSTSUB (coro_state_stash, "SAVE_CCTXT", newSViv (TRANSFER_SAVE_CCTXT));
767		953
768	if (!padlist_cache)
769	padlist_cache = newHV ();
770
771	main_mainstack = PL_mainstack;	954	main_mainstack = PL_mainstack;
		955
		956	coroapi.ver = CORO_API_VERSION;
		957	coroapi.transfer = api_transfer;
772	}	958	}
773		959
774	Coro::State	960	Coro::State
775	_newprocess(args)	961	_newprocess(args)
776	SV * args	962	SV * args
…		…
779	Coro__State coro;	965	Coro__State coro;
780		966
781	if (!SvROK (args) \|\| SvTYPE (SvRV (args)) != SVt_PVAV)	967	if (!SvROK (args) \|\| SvTYPE (SvRV (args)) != SVt_PVAV)
782	croak ("Coro::State::_newprocess expects an arrayref");	968	croak ("Coro::State::_newprocess expects an arrayref");
783		969
784	New (0, coro, 1, struct coro);	970	Newz (0, coro, 1, struct coro);
785		971
786	coro->args = (AV *)SvREFCNT_inc (SvRV (args));	972	coro->args = (AV *)SvREFCNT_inc (SvRV (args));
787	coro->mainstack = 0; /* actual work is done inside transfer */	973	coro->mainstack = 0; /* actual work is done inside transfer */
788	coro->stack = 0;	974	coro->stack = 0;
789		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
790	RETVAL = coro;	982	RETVAL = coro;
791	OUTPUT:	983	OUTPUT:
792	RETVAL	984	RETVAL
793		985
794	void	986	void
795	transfer(prev, next, flags = TRANSFER_SAVE_ALL \| TRANSFER_LAZY_STACK)	987	transfer(prev, next, flags)
796	Coro::State_or_hashref prev	988	SV *prev
797	Coro::State_or_hashref next	989	SV *next
798	int flags	990	int flags
799	PROTOTYPE: @	991	PROTOTYPE: @
800	CODE:	992	CODE:
801	PUTBACK;	993	PUTBACK;
		994	SV_CORO (next, "Coro::transfer");
		995	SV_CORO (prev, "Coro::transfer");
802	transfer (aTHX_ prev, next, flags);	996	transfer (aTHX_ SvSTATE (prev), SvSTATE (next), flags);
803	SPAGAIN;	997	SPAGAIN;
804		998
805	void	999	void
806	DESTROY(coro)	1000	DESTROY(coro)
807	Coro::State coro	1001	Coro::State coro
…		…
809		1003
810	if (coro->mainstack && coro->mainstack != main_mainstack)	1004	if (coro->mainstack && coro->mainstack != main_mainstack)
811	{	1005	{
812	struct coro temp;	1006	struct coro temp;
813		1007
		1008	PUTBACK;
814	SAVE(aTHX_ (&temp), TRANSFER_SAVE_ALL);	1009	SAVE(aTHX_ (&temp), TRANSFER_SAVE_ALL);
815	LOAD(aTHX_ coro);	1010	LOAD(aTHX_ coro);
		1011	SPAGAIN;
816		1012
817	destroy_stacks (aTHX);	1013	destroy_stacks (aTHX);
818		1014
819	LOAD((&temp)); /* this will get rid of defsv etc.. */	1015	LOAD((&temp)); /* this will get rid of defsv etc.. */
		1016	SPAGAIN;
820		1017
821	coro->mainstack = 0;	1018	coro->mainstack = 0;
822	}	1019	}
823		1020
824	deallocate_stack (coro);	1021	deallocate_stack (coro);
825		1022	SvREFCNT_dec (coro->args);
826	Safefree (coro);	1023	Safefree (coro);
827
828	void
829	flush()
830	CODE:
831	#ifdef MAY_FLUSH
832	flush_padlist_cache ();
833	#endif
834		1024
835	void	1025	void
836	_exit(code)	1026	_exit(code)
837	int code	1027	int code
838	PROTOTYPE: $	1028	PROTOTYPE: $
839	CODE:	1029	CODE:
840	#if defined(__GLIBC__) \|\| _POSIX_C_SOURCE
841	_exit (code);	1030	_exit (code);
842	#else
843	signal (SIGTERM, SIG_DFL);
844	raise (SIGTERM);
845	exit (code);
846	#endif
847		1031
848	MODULE = Coro::State PACKAGE = Coro::Cont	1032	MODULE = Coro::State PACKAGE = Coro::Cont
849		1033
850	# this is slightly dirty	1034	# this is slightly dirty (should expose a c-level api)
851		1035
852	void	1036	void
853	yield(...)	1037	yield(...)
854	PROTOTYPE: @	1038	PROTOTYPE: @
855	CODE:	1039	CODE:
…		…
857	SV *sv;	1041	SV *sv;
858	AV *defav = GvAV (PL_defgv);	1042	AV *defav = GvAV (PL_defgv);
859	struct coro prev, next;	1043	struct coro prev, next;
860		1044
861	if (!returnstk)	1045	if (!returnstk)
862	returnstk = SvRV (get_sv ("Coro::Cont::return", FALSE));	1046	returnstk = SvRV ((SV *)get_sv ("Coro::Cont::return", FALSE));
863		1047
864	/* set up @_ -- ugly */	1048	/* set up @_ -- ugly */
865	av_clear (defav);	1049	av_clear (defav);
866	av_fill (defav, items - 1);	1050	av_fill (defav, items - 1);
867	while (items--)	1051	while (items--)
…		…
873	next = (struct coro )SvIV ((SV)SvRV (av_fetch ((AV )SvRV (sv), 1, 0)));	1057	next = (struct coro )SvIV ((SV)SvRV (av_fetch ((AV )SvRV (sv), 1, 0)));
874	SvREFCNT_dec (sv);	1058	SvREFCNT_dec (sv);
875		1059
876	transfer(aTHX_ prev, next, 0);	1060	transfer(aTHX_ prev, next, 0);
877		1061
		1062	MODULE = Coro::State PACKAGE = Coro
		1063
		1064	# this is slightly dirty (should expose a c-level api)
		1065
		1066	BOOT:
		1067	{
		1068	int i;
		1069	HV *stash = gv_stashpv ("Coro", TRUE);
		1070
		1071	newCONSTSUB (stash, "PRIO_MAX", newSViv (PRIO_MAX));
		1072	newCONSTSUB (stash, "PRIO_HIGH", newSViv (PRIO_HIGH));
		1073	newCONSTSUB (stash, "PRIO_NORMAL", newSViv (PRIO_NORMAL));
		1074	newCONSTSUB (stash, "PRIO_LOW", newSViv (PRIO_LOW));
		1075	newCONSTSUB (stash, "PRIO_IDLE", newSViv (PRIO_IDLE));
		1076	newCONSTSUB (stash, "PRIO_MIN", newSViv (PRIO_MIN));
		1077
		1078	coro_current = gv_fetchpv ("Coro::current", TRUE, SVt_PV);
		1079	coro_idle = gv_fetchpv ("Coro::idle" , TRUE, SVt_PV);
		1080
		1081	for (i = PRIO_MAX - PRIO_MIN + 1; i--; )
		1082	coro_ready[i] = newAV ();
		1083
		1084	{
		1085	SV *sv = perl_get_sv("Coro::API", 1);
		1086
		1087	coroapi.schedule = api_schedule;
		1088	coroapi.cede = api_cede;
		1089	coroapi.ready = api_ready;
		1090	coroapi.nready = &coro_nready;
		1091	coroapi.current = coro_current;
		1092
		1093	GCoroAPI = &coroapi;
		1094	sv_setiv(sv, (IV)&coroapi);
		1095	SvREADONLY_on(sv);
		1096	}
		1097	}
		1098
		1099	#if !PERL_MICRO
		1100
		1101	void
		1102	ready(self)
		1103	SV * self
		1104	PROTOTYPE: $
		1105	CODE:
		1106	api_ready (self);
		1107
		1108	#endif
		1109
		1110	int
		1111	nready(...)
		1112	PROTOTYPE:
		1113	CODE:
		1114	RETVAL = coro_nready;
		1115	OUTPUT:
		1116	RETVAL
		1117
		1118	void
		1119	schedule(...)
		1120	PROTOTYPE:
		1121	CODE:
		1122	api_schedule ();
		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 1.20 by root, Fri Aug 3 12:51:56 2001 UTC vs. Revision 1.55 by pcg, Thu Apr 1 02:29:05 2004 UTC

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Comparing Coro/Coro/State.xs (file contents):
Revision 1.20 by root, Fri Aug 3 12:51:56 2001 UTC vs.
Revision 1.55 by pcg, Thu Apr 1 02:29:05 2004 UTC