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

Comparing Coro/Coro/State.xs (file contents):
Revision 1.61 by root, Tue Aug 10 01:56:30 2004 UTC vs.
Revision 1.87 by root, Fri Nov 24 13:40:36 2006 UTC

…		…
1	#define PERL_NO_GET_CONTEXT	1	#define PERL_NO_GET_CONTEXT
		2
		3	#include "libcoro/coro.c"
2		4
3	#include "EXTERN.h"	5	#include "EXTERN.h"
4	#include "perl.h"	6	#include "perl.h"
5	#include "XSUB.h"	7	#include "XSUB.h"
6		8
7	#include "patchlevel.h"	9	#include "patchlevel.h"
8		10
9	#if PATCHLEVEL < 6	11	#if PERL_VERSION < 6
10	# ifndef PL_ppaddr	12	# ifndef PL_ppaddr
11	# define PL_ppaddr ppaddr	13	# define PL_ppaddr ppaddr
12	# endif	14	# endif
13	# ifndef call_sv	15	# ifndef call_sv
14	# define call_sv perl_call_sv	16	# define call_sv perl_call_sv
25	# ifndef IS_PADCONST	27	# ifndef IS_PADCONST
26	# define IS_PADCONST(v) 0	28	# define IS_PADCONST(v) 0
27	# endif	29	# endif
28	#endif	30	#endif
29		31
30	#include "libcoro/coro.c"
31
32	#include <signal.h>	32	#include <errno.h>
		33
		34	#if !__i386 && !__x86_64 && !__powerpc && !__m68k && !__alpha && !__mips && !__sparc64
		35	# undef STACKGUARD
		36	#endif
		37
		38	#ifndef STACKGUARD
		39	# define STACKGUARD 0
		40	#endif
33		41
34	#ifdef HAVE_MMAP	42	#ifdef HAVE_MMAP
35	# include <unistd.h>	43	# include <unistd.h>
36	# include <sys/mman.h>	44	# include <sys/mman.h>
37	# ifndef MAP_ANONYMOUS	45	# ifndef MAP_ANONYMOUS
…		…
39	# define MAP_ANONYMOUS MAP_ANON	47	# define MAP_ANONYMOUS MAP_ANON
40	# else	48	# else
41	# undef HAVE_MMAP	49	# undef HAVE_MMAP
42	# endif	50	# endif
43	# endif	51	# endif
		52	# include <limits.h>
		53	# ifndef PAGESIZE
		54	# define PAGESIZE pagesize
		55	# define BOOT_PAGESIZE pagesize = sysconf (_SC_PAGESIZE)
		56	static long pagesize;
		57	# else
		58	# define BOOT_PAGESIZE
		59	# endif
44	#endif	60	#endif
45		61
46	#define SUB_INIT "Coro::State::initialize"	62	#define SUB_INIT "Coro::State::initialize"
47	#define UCORO_STATE "_coro_state"	63	#define UCORO_STATE "_coro_state"
48		64
…		…
57		73
58	#include "CoroAPI.h"	74	#include "CoroAPI.h"
59		75
60	#ifdef USE_ITHREADS	76	#ifdef USE_ITHREADS
61	static perl_mutex coro_mutex;	77	static perl_mutex coro_mutex;
62	# define LOCK do { MUTEX_LOCK (&coro_mutex); } while (0)	78	# define LOCK do { MUTEX_LOCK (&coro_mutex); } while (0)
63	# define UNLOCK do { MUTEX_UNLOCK (&coro_mutex); } while (0)	79	# define UNLOCK do { MUTEX_UNLOCK (&coro_mutex); } while (0)
64	#else	80	#else
65	# define LOCK 0	81	# define LOCK (void)0
66	# define UNLOCK 0	82	# define UNLOCK (void)0
67	#endif	83	#endif
68		84
69	static struct CoroAPI coroapi;	85	static struct CoroAPI coroapi;
70	static AV main_mainstack; / used to differentiate between $main and others */	86	static AV main_mainstack; / used to differentiate between $main and others */
71	static HV *coro_state_stash;	87	static HV *coro_state_stash;
…		…
84	void *sptr;	100	void *sptr;
85	long ssize; /* positive == mmap, otherwise malloc */	101	long ssize; /* positive == mmap, otherwise malloc */
86	} coro_stack;	102	} coro_stack;
87		103
88	struct coro {	104	struct coro {
89	/* the top-level JMPENV for each coroutine, needed to catch dies. */
90	JMPENV start_env;
91
92	/* the optional C context */	105	/* the optional C context */
93	coro_stack *stack;	106	coro_stack *stack;
94	void *cursp;	107	void *cursp;
95	int gencnt;	108	int gencnt;
96		109
…		…
109	AV *mainstack;	122	AV *mainstack;
110	SV **stack_sp;	123	SV **stack_sp;
111	OP *op;	124	OP *op;
112	SV **curpad;	125	SV **curpad;
113	AV *comppad;	126	AV *comppad;
		127	CV *compcv;
114	SV **stack_base;	128	SV **stack_base;
115	SV **stack_max;	129	SV **stack_max;
116	SV **tmps_stack;	130	SV **tmps_stack;
117	I32 tmps_floor;	131	I32 tmps_floor;
118	I32 tmps_ix;	132	I32 tmps_ix;
…		…
127	I32 savestack_ix;	141	I32 savestack_ix;
128	I32 savestack_max;	142	I32 savestack_max;
129	OP **retstack;	143	OP **retstack;
130	I32 retstack_ix;	144	I32 retstack_ix;
131	I32 retstack_max;	145	I32 retstack_max;
		146	PMOP *curpm;
132	COP *curcop;	147	COP *curcop;
133	JMPENV *top_env;	148	JMPENV *top_env;
134		149
		150	/* coro process data */
		151	int prio;
		152
135	/* data associated with this coroutine (initial args) */	153	/* data associated with this coroutine (initial args) */
136	AV *args;	154	AV *args;
		155	int refcnt;
137	};	156	};
138		157
139	typedef struct coro *Coro__State;	158	typedef struct coro *Coro__State;
140	typedef struct coro *Coro__State_or_hashref;	159	typedef struct coro *Coro__State_or_hashref;
141		160
142	/* mostly copied from op.c:cv_clone2 */	161	static AV *
143	STATIC AV *	162	coro_clone_padlist (pTHX_ CV *cv)
144	clone_padlist (pTHX_ AV *protopadlist)
145	{	163	{
146	AV *av;	164	AV *padlist = CvPADLIST (cv);
147	I32 ix;
148	AV protopad_name = (AV ) * av_fetch (protopadlist, 0, FALSE);
149	AV protopad = (AV ) * av_fetch (protopadlist, 1, FALSE);
150	SV **pname = AvARRAY (protopad_name);
151	SV **ppad = AvARRAY (protopad);
152	I32 fname = AvFILLp (protopad_name);
153	I32 fpad = AvFILLp (protopad);
154	AV newpadlist, newpad_name, *newpad;	165	AV newpadlist, newpad;
155	SV **npad;
156
157	newpad_name = newAV ();
158	for (ix = fname; ix >= 0; ix--)
159	av_store (newpad_name, ix, SvREFCNT_inc (pname[ix]));
160
161	newpad = newAV ();
162	av_fill (newpad, AvFILLp (protopad));
163	npad = AvARRAY (newpad);
164		166
165	newpadlist = newAV ();	167	newpadlist = newAV ();
166	AvREAL_off (newpadlist);	168	AvREAL_off (newpadlist);
167	av_store (newpadlist, 0, (SV *) newpad_name);	169	#if PERL_VERSION < 9
		170	Perl_pad_push (aTHX_ padlist, AvFILLp (padlist) + 1, 1);
		171	#else
		172	Perl_pad_push (aTHX_ padlist, AvFILLp (padlist) + 1);
		173	#endif
		174	newpad = (AV *)AvARRAY (padlist)[AvFILLp (padlist)];
		175	--AvFILLp (padlist);
		176
		177	av_store (newpadlist, 0, SvREFCNT_inc (*av_fetch (padlist, 0, FALSE)));
168	av_store (newpadlist, 1, (SV *) newpad);	178	av_store (newpadlist, 1, (SV *)newpad);
169
170	av = newAV (); /* will be @_ */
171	av_extend (av, 0);
172	av_store (newpad, 0, (SV *) av);
173	AvFLAGS (av) = AVf_REIFY;
174
175	for (ix = fpad; ix > 0; ix--)
176	{
177	SV *namesv = (ix <= fname) ? pname[ix] : Nullsv;
178
179	if (namesv && namesv != &PL_sv_undef)
180	{
181	char name = SvPVX (namesv); / XXX */
182
183	if (SvFLAGS (namesv) & SVf_FAKE \|\| *name == '&')
184	{ /* lexical from outside? */
185	npad[ix] = SvREFCNT_inc (ppad[ix]);
186	}
187	else
188	{ /* our own lexical */
189	SV *sv;
190	if (*name == '&')
191	sv = SvREFCNT_inc (ppad[ix]);
192	else if (*name == '@')
193	sv = (SV *) newAV ();
194	else if (*name == '%')
195	sv = (SV *) newHV ();
196	else
197	sv = NEWSV (0, 0);
198
199	#ifdef SvPADBUSY
200	if (!SvPADBUSY (sv))
201	#endif
202	SvPADMY_on (sv);
203
204	npad[ix] = sv;
205	}
206	}
207	else if (IS_PADGV (ppad[ix]) \|\| IS_PADCONST (ppad[ix]))
208	{
209	npad[ix] = SvREFCNT_inc (ppad[ix]);
210	}
211	else
212	{
213	SV *sv = NEWSV (0, 0);
214	SvPADTMP_on (sv);
215	npad[ix] = sv;
216	}
217	}
218
219	#if 0 /* return -ENOTUNDERSTOOD */
220	/* Now that vars are all in place, clone nested closures. */
221
222	for (ix = fpad; ix > 0; ix--) {
223	SV* namesv = (ix <= fname) ? pname[ix] : Nullsv;
224	if (namesv
225	&& namesv != &PL_sv_undef
226	&& !(SvFLAGS(namesv) & SVf_FAKE)
227	&& *SvPVX(namesv) == '&'
228	&& CvCLONE(ppad[ix]))
229	{
230	CV kid = cv_clone((CV)ppad[ix]);
231	SvREFCNT_dec(ppad[ix]);
232	CvCLONE_on(kid);
233	SvPADMY_on(kid);
234	npad[ix] = (SV*)kid;
235	}
236	}
237	#endif
238		179
239	return newpadlist;	180	return newpadlist;
240	}	181	}
241		182
242	STATIC void	183	static void
243	free_padlist (pTHX_ AV *padlist)	184	free_padlist (pTHX_ AV *padlist)
244	{	185	{
245	/* may be during global destruction */	186	/* may be during global destruction */
246	if (SvREFCNT (padlist))	187	if (SvREFCNT (padlist))
247	{	188	{
…		…
261		202
262	SvREFCNT_dec ((SV*)padlist);	203	SvREFCNT_dec ((SV*)padlist);
263	}	204	}
264	}	205	}
265		206
266	STATIC int	207	static int
267	coro_cv_free (pTHX_ SV sv, MAGIC mg)	208	coro_cv_free (pTHX_ SV sv, MAGIC mg)
268	{	209	{
269	AV *padlist;	210	AV *padlist;
270	AV av = (AV )mg->mg_obj;	211	AV av = (AV )mg->mg_obj;
271		212
272	/* casting is fun. */	213	/* casting is fun. */
273	while (&PL_sv_undef != (SV )(padlist = (AV )av_pop (av)))	214	while (&PL_sv_undef != (SV )(padlist = (AV )av_pop (av)))
274	free_padlist (aTHX_ padlist);	215	free_padlist (aTHX_ padlist);
275		216
276	SvREFCNT_dec (av);	217	SvREFCNT_dec (av);
		218
		219	return 0;
277	}	220	}
278		221
279	#define PERL_MAGIC_coro PERL_MAGIC_ext	222	#define PERL_MAGIC_coro PERL_MAGIC_ext
280		223
281	static MGVTBL vtbl_coro = {0, 0, 0, 0, coro_cv_free};	224	static MGVTBL vtbl_coro = {0, 0, 0, 0, coro_cv_free};
282		225
283	/* the next two functions merely cache the padlists */	226	/* the next two functions merely cache the padlists */
284	STATIC void	227	static void
285	get_padlist (pTHX_ CV *cv)	228	get_padlist (pTHX_ CV *cv)
286	{	229	{
287	MAGIC mg = mg_find ((SV )cv, PERL_MAGIC_coro);	230	MAGIC mg = mg_find ((SV )cv, PERL_MAGIC_coro);
288		231
289	if (mg && AvFILLp ((AV *)mg->mg_obj) >= 0)	232	if (mg && AvFILLp ((AV *)mg->mg_obj) >= 0)
290	CvPADLIST (cv) = (AV )av_pop ((AV )mg->mg_obj);	233	CvPADLIST (cv) = (AV )av_pop ((AV )mg->mg_obj);
291	else	234	else
		235	{
		236	#if 0
		237	/* this should work - but it doesn't :( */
		238	CV *cp = Perl_cv_clone (aTHX_ cv);
		239	CvPADLIST (cv) = CvPADLIST (cp);
		240	CvPADLIST (cp) = 0;
		241	SvREFCNT_dec (cp);
		242	#else
292	CvPADLIST (cv) = clone_padlist (aTHX_ CvPADLIST (cv));	243	CvPADLIST (cv) = coro_clone_padlist (aTHX_ cv);
		244	#endif
		245	}
293	}	246	}
294		247
295	STATIC void	248	static void
296	put_padlist (pTHX_ CV *cv)	249	put_padlist (pTHX_ CV *cv)
297	{	250	{
298	MAGIC mg = mg_find ((SV )cv, PERL_MAGIC_coro);	251	MAGIC mg = mg_find ((SV )cv, PERL_MAGIC_coro);
299		252
300	if (!mg)	253	if (!mg)
…		…
327	PL_mainstack = c->mainstack;	280	PL_mainstack = c->mainstack;
328	PL_stack_sp = c->stack_sp;	281	PL_stack_sp = c->stack_sp;
329	PL_op = c->op;	282	PL_op = c->op;
330	PL_curpad = c->curpad;	283	PL_curpad = c->curpad;
331	PL_comppad = c->comppad;	284	PL_comppad = c->comppad;
		285	PL_compcv = c->compcv;
332	PL_stack_base = c->stack_base;	286	PL_stack_base = c->stack_base;
333	PL_stack_max = c->stack_max;	287	PL_stack_max = c->stack_max;
334	PL_tmps_stack = c->tmps_stack;	288	PL_tmps_stack = c->tmps_stack;
335	PL_tmps_floor = c->tmps_floor;	289	PL_tmps_floor = c->tmps_floor;
336	PL_tmps_ix = c->tmps_ix;	290	PL_tmps_ix = c->tmps_ix;
…		…
342	PL_scopestack_ix = c->scopestack_ix;	296	PL_scopestack_ix = c->scopestack_ix;
343	PL_scopestack_max = c->scopestack_max;	297	PL_scopestack_max = c->scopestack_max;
344	PL_savestack = c->savestack;	298	PL_savestack = c->savestack;
345	PL_savestack_ix = c->savestack_ix;	299	PL_savestack_ix = c->savestack_ix;
346	PL_savestack_max = c->savestack_max;	300	PL_savestack_max = c->savestack_max;
		301	#if PERL_VERSION < 9
347	PL_retstack = c->retstack;	302	PL_retstack = c->retstack;
348	PL_retstack_ix = c->retstack_ix;	303	PL_retstack_ix = c->retstack_ix;
349	PL_retstack_max = c->retstack_max;	304	PL_retstack_max = c->retstack_max;
		305	#endif
		306	PL_curpm = c->curpm;
350	PL_curcop = c->curcop;	307	PL_curcop = c->curcop;
351	PL_top_env = c->top_env;	308	PL_top_env = c->top_env;
352		309
353	if (c->defav) REPLACE_SV (GvAV (PL_defgv), c->defav);	310	if (c->defav) REPLACE_SV (GvAV (PL_defgv), c->defav);
354	if (c->defsv) REPLACE_SV (DEFSV , c->defsv);	311	if (c->defsv) REPLACE_SV (DEFSV , c->defsv);
…		…
413	}	370	}
414		371
415	PUSHs ((SV *)CvPADLIST(cv));	372	PUSHs ((SV *)CvPADLIST(cv));
416	PUSHs ((SV *)cv);	373	PUSHs ((SV *)cv);
417		374
418	get_padlist (aTHX_ cv); /* this is a monster */	375	get_padlist (aTHX_ cv);
419	}	376	}
420	}	377	}
421	#ifdef CXt_FORMAT	378	#ifdef CXt_FORMAT
422	else if (CxTYPE(cx) == CXt_FORMAT)	379	else if (CxTYPE(cx) == CXt_FORMAT)
423	{	380	{
…		…
451	c->mainstack = PL_mainstack;	408	c->mainstack = PL_mainstack;
452	c->stack_sp = PL_stack_sp;	409	c->stack_sp = PL_stack_sp;
453	c->op = PL_op;	410	c->op = PL_op;
454	c->curpad = PL_curpad;	411	c->curpad = PL_curpad;
455	c->comppad = PL_comppad;	412	c->comppad = PL_comppad;
		413	c->compcv = PL_compcv;
456	c->stack_base = PL_stack_base;	414	c->stack_base = PL_stack_base;
457	c->stack_max = PL_stack_max;	415	c->stack_max = PL_stack_max;
458	c->tmps_stack = PL_tmps_stack;	416	c->tmps_stack = PL_tmps_stack;
459	c->tmps_floor = PL_tmps_floor;	417	c->tmps_floor = PL_tmps_floor;
460	c->tmps_ix = PL_tmps_ix;	418	c->tmps_ix = PL_tmps_ix;
…		…
466	c->scopestack_ix = PL_scopestack_ix;	424	c->scopestack_ix = PL_scopestack_ix;
467	c->scopestack_max = PL_scopestack_max;	425	c->scopestack_max = PL_scopestack_max;
468	c->savestack = PL_savestack;	426	c->savestack = PL_savestack;
469	c->savestack_ix = PL_savestack_ix;	427	c->savestack_ix = PL_savestack_ix;
470	c->savestack_max = PL_savestack_max;	428	c->savestack_max = PL_savestack_max;
		429	#if PERL_VERSION < 9
471	c->retstack = PL_retstack;	430	c->retstack = PL_retstack;
472	c->retstack_ix = PL_retstack_ix;	431	c->retstack_ix = PL_retstack_ix;
473	c->retstack_max = PL_retstack_max;	432	c->retstack_max = PL_retstack_max;
		433	#endif
		434	c->curpm = PL_curpm;
474	c->curcop = PL_curcop;	435	c->curcop = PL_curcop;
475	c->top_env = PL_top_env;	436	c->top_env = PL_top_env;
476	}	437	}
477		438
478	/*	439	/*
479	* allocate various perl stacks. This is an exact copy	440	* allocate various perl stacks. This is an exact copy
480	* of perl.c:init_stacks, except that it uses less memory	441	* of perl.c:init_stacks, except that it uses less memory
481	* on the (sometimes correct) assumption that coroutines do	442	* on the (sometimes correct) assumption that coroutines do
482	* not usually need a lot of stackspace.	443	* not usually need a lot of stackspace.
483	*/	444	*/
484	STATIC void	445	static void
485	coro_init_stacks (pTHX)	446	coro_init_stacks (pTHX)
486	{	447	{
487	LOCK;	448	LOCK;
488		449
489	PL_curstackinfo = new_stackinfo(96, 1024/sizeof(PERL_CONTEXT) - 1);	450	PL_curstackinfo = new_stackinfo(96, 1024/sizeof(PERL_CONTEXT) - 1);
…		…
514		475
515	New(54,PL_savestack,96,ANY);	476	New(54,PL_savestack,96,ANY);
516	PL_savestack_ix = 0;	477	PL_savestack_ix = 0;
517	PL_savestack_max = 96;	478	PL_savestack_max = 96;
518		479
		480	#if PERL_VERSION < 9
519	New(54,PL_retstack,8,OP*);	481	New(54,PL_retstack,8,OP*);
520	PL_retstack_ix = 0;	482	PL_retstack_ix = 0;
521	PL_retstack_max = 8;	483	PL_retstack_max = 8;
		484	#endif
522		485
523	UNLOCK;	486	UNLOCK;
524	}	487	}
525		488
526	/*	489	/*
527	* destroy the stacks, the callchain etc...	490	* destroy the stacks, the callchain etc...
528	*/	491	*/
529	STATIC void	492	static void
530	destroy_stacks(pTHX)	493	destroy_stacks(pTHX)
531	{	494	{
532	if (!IN_DESTRUCT)	495	if (!IN_DESTRUCT)
533	{	496	{
534	/* is this ugly, I ask? */	497	/* is this ugly, I ask? */
…		…
566		529
567	Safefree (PL_tmps_stack);	530	Safefree (PL_tmps_stack);
568	Safefree (PL_markstack);	531	Safefree (PL_markstack);
569	Safefree (PL_scopestack);	532	Safefree (PL_scopestack);
570	Safefree (PL_savestack);	533	Safefree (PL_savestack);
		534	#if PERL_VERSION < 9
571	Safefree (PL_retstack);	535	Safefree (PL_retstack);
		536	#endif
572	}	537	}
573		538
574	static void	539	static void
575	allocate_stack (Coro__State ctx, int alloc)	540	allocate_stack (Coro__State ctx, int alloc)
576	{	541	{
…		…
583	stack->gencnt = ctx->gencnt = 0;	548	stack->gencnt = ctx->gencnt = 0;
584		549
585	if (alloc)	550	if (alloc)
586	{	551	{
587	#if HAVE_MMAP	552	#if HAVE_MMAP
588	stack->ssize = 16384 * sizeof (long); /* mmap should do allocate-on-write for us */	553	stack->ssize = ((STACKSIZE * sizeof (long) + PAGESIZE - 1) / PAGESIZE + STACKGUARD) * PAGESIZE; /* mmap should do allocate-on-write for us */
589	stack->sptr = mmap (0, stack->ssize, PROT_EXEC\|PROT_READ\|PROT_WRITE, MAP_PRIVATE\|MAP_ANONYMOUS, 0, 0);	554	stack->sptr = mmap (0, stack->ssize, PROT_EXEC\|PROT_READ\|PROT_WRITE, MAP_PRIVATE\|MAP_ANONYMOUS, 0, 0);
590	if (stack->sptr == (void *)-1)	555	if (stack->sptr != (void *)-1)
591	#endif
592	{	556	{
593	/FIXME//D//* reasonable stack size! */	557	# if STACKGUARD
		558	mprotect (stack->sptr, STACKGUARD * PAGESIZE, PROT_NONE);
		559	# endif
		560	}
		561	else
		562	#endif
		563	{
594	stack->ssize = - (8192 * sizeof (long));	564	stack->ssize = - (STACKSIZE * (long)sizeof (long));
595	New (0, stack->sptr, 8192, long);	565	New (0, stack->sptr, STACKSIZE, long);
596	}	566	}
597	}	567	}
598	else	568	else
599	stack->sptr = 0;	569	stack->sptr = 0;
600		570
…		…
660	}	630	}
661	else	631	else
662	{	632	{
663	UNOP myop;	633	UNOP myop;
664		634
665	PL_op = (OP *)&myop;
666
667	Zero(&myop, 1, UNOP);	635	Zero(&myop, 1, UNOP);
668	myop.op_next = Nullop;	636	myop.op_next = Nullop;
669	myop.op_flags = OPf_WANT_VOID;	637	myop.op_flags = OPf_WANT_VOID;
		638
		639	PL_op = (OP *)&myop;
670		640
671	PUSHMARK(SP);	641	PUSHMARK(SP);
672	XPUSHs (sub_init);	642	XPUSHs (sub_init);
673	/*	643	/*
674	* the next line is slightly wrong, as PL_op->op_next	644	* the next line is slightly wrong, as PL_op->op_next
…		…
691	/*	661	/*
692	* this is a _very_ stripped down perl interpreter ;)	662	* this is a _very_ stripped down perl interpreter ;)
693	*/	663	*/
694	dTHX;	664	dTHX;
695	Coro__State ctx = (Coro__State)arg;	665	Coro__State ctx = (Coro__State)arg;
696	JMPENV coro_start_env;
697		666
698	PL_top_env = &ctx->start_env;	667	PL_top_env = &PL_start_env;
699		668
700	ctx->cursp = 0;	669	ctx->cursp = 0;
701	PL_op = PL_op->op_next;	670	PL_op = PL_op->op_next;
702	CALLRUNOPS(aTHX);	671	CALLRUNOPS(aTHX);
703		672
704	abort ();	673	abort ();
705	}	674	}
706		675
707	STATIC void	676	/* never call directly, always through the coro_state_transfer global variable */
		677	static void
708	transfer (pTHX_ struct coro prev, struct coro next, int flags)	678	transfer_impl (pTHX_ struct coro prev, struct coro next, int flags)
709	{	679	{
710	dSTACKLEVEL;	680	dSTACKLEVEL;
711		681
712	if (prev != next)	682	if (prev != next)
713	{	683	{
		684	/* has this coro been created yet? */
714	if (next->mainstack)	685	if (next->mainstack)
715	{	686	{
716	LOCK;	687	LOCK;
717	SAVE (prev, flags);	688	SAVE (prev, flags);
718	LOAD (next);	689	LOAD (next);
…		…
757	{	728	{
758	LOCK;	729	LOCK;
759	SAVE (prev, -1); /* first get rid of the old state */	730	SAVE (prev, -1); /* first get rid of the old state */
760	UNLOCK;	731	UNLOCK;
761		732
		733	/* create the coroutine for the first time */
762	if (flags & TRANSFER_SAVE_CCTXT)	734	if (flags & TRANSFER_SAVE_CCTXT)
763	{	735	{
764	if (!prev->stack)	736	if (!prev->stack)
765	allocate_stack (prev, 0);	737	allocate_stack (prev, 0);
766		738
		739	/* the new coroutine starts with start_env again */
		740	PL_top_env = &PL_start_env;
		741
767	if (prev->stack->sptr && flags & TRANSFER_LAZY_STACK)	742	if (prev->stack->sptr && flags & TRANSFER_LAZY_STACK)
768	{	743	{
769	PL_top_env = &next->start_env;
770
771	setup_coro (next);	744	setup_coro (next);
772	next->cursp = stacklevel;	745	next->cursp = stacklevel;
773		746
774	prev->stack->refcnt++;	747	prev->stack->refcnt++;
775	prev->stack->usecnt++;	748	prev->stack->usecnt++;
…		…
803	coro_mortal = 0;	776	coro_mortal = 0;
804	}	777	}
805	UNLOCK;	778	UNLOCK;
806	}	779	}
807		780
		781	/* use this function pointer to call the above function */
		782	/* this is done to increase chances of the compiler not inlining the call */
		783	void (coro_state_transfer)(pTHX_ struct coro prev, struct coro *next, int flags) = transfer_impl;
		784
808	#define SV_CORO(sv,func) \	785	#define SV_CORO(sv,func) \
809	do { \	786	do { \
810	if (SvROK (sv)) \	787	if (SvROK (sv)) \
811	sv = SvRV (sv); \	788	sv = SvRV (sv); \
812	\	789	\
813	if (SvTYPE (sv) == SVt_PVHV) \	790	if (SvTYPE (sv) == SVt_PVHV && SvSTASH (sv) != coro_state_stash) \
814	{ \	791	{ \
815	HE he = hv_fetch_ent ((HV )sv, ucoro_state_sv, 0, ucoro_state_hash); \	792	HE he = hv_fetch_ent ((HV )sv, ucoro_state_sv, 0, ucoro_state_hash); \
816	\	793	\
817	if (!he) \	794	if (!he) \
818	croak ("%s() -- %s is a hashref but lacks the " UCORO_STATE " key", func, # sv); \	795	croak ("%s() -- %s is a hashref but lacks the " UCORO_STATE " key", func, # sv); \
…		…
824	if (!SvOBJECT (sv) \|\| SvSTASH (sv) != coro_state_stash) \	801	if (!SvOBJECT (sv) \|\| SvSTASH (sv) != coro_state_stash) \
825	croak ("%s() -- %s is not (and contains not) a Coro::State object", func, # sv); \	802	croak ("%s() -- %s is not (and contains not) a Coro::State object", func, # sv); \
826	\	803	\
827	} while(0)	804	} while(0)
828		805
829	#define SvSTATE(sv) (struct coro *)SvIV (sv)	806	static void
		807	coro_state_destroy (struct coro *coro)
		808	{
		809	if (coro->refcnt--)
		810	return;
830		811
		812	if (coro->mainstack && coro->mainstack != main_mainstack)
		813	{
		814	struct coro temp;
		815
		816	SAVE (aTHX_ (&temp), TRANSFER_SAVE_ALL);
		817	LOAD (aTHX_ coro);
		818
		819	destroy_stacks (aTHX);
		820
		821	LOAD ((&temp)); /* this will get rid of defsv etc.. */
		822
		823	coro->mainstack = 0;
		824	}
		825
		826	deallocate_stack (coro);
		827	SvREFCNT_dec (coro->args);
		828	Safefree (coro);
		829	}
		830
831	static void	831	static int
		832	coro_state_clear (SV sv, MAGIC mg)
		833	{
		834	struct coro coro = (struct coro )mg->mg_ptr;
		835	mg->mg_ptr = 0;
		836
		837	coro_state_destroy (coro);
		838
		839	return 0;
		840	}
		841
		842	static int
		843	coro_state_dup (MAGIC mg, CLONE_PARAMS params)
		844	{
		845	struct coro coro = (struct coro )mg->mg_ptr;
		846
		847	++coro->refcnt;
		848
		849	return 0;
		850	}
		851
		852	static MGVTBL coro_state_vtbl = { 0, 0, 0, 0, coro_state_clear, 0, coro_state_dup, 0 };
		853
		854	static struct coro *
		855	SvSTATE (SV *coro)
		856	{
		857	MAGIC *mg = SvMAGIC (SvROK (coro) ? SvRV (coro) : coro);
		858	assert (mg->mg_type == PERL_MAGIC_ext);
		859	return (struct coro *)mg->mg_ptr;
		860	}
		861
		862	static void
832	api_transfer(pTHX_ SV prev, SV next, int flags)	863	api_transfer (pTHX_ SV prev, SV next, int flags)
833	{	864	{
834	SV_CORO (prev, "Coro::transfer");	865	SV_CORO (prev, "Coro::transfer");
835	SV_CORO (next, "Coro::transfer");	866	SV_CORO (next, "Coro::transfer");
836		867
837	transfer (aTHX_ SvSTATE (prev), SvSTATE (next), flags);	868	coro_state_transfer (aTHX_ SvSTATE (prev), SvSTATE (next), flags);
838	}	869	}
839		870
840	/ Coro ******************************************************************/	871	/ Coro ******************************************************************/
841		872
842	#define PRIO_MAX 3	873	#define PRIO_MAX 3
…		…
846	#define PRIO_IDLE -3	877	#define PRIO_IDLE -3
847	#define PRIO_MIN -4	878	#define PRIO_MIN -4
848		879
849	/* for Coro.pm */	880	/* for Coro.pm */
850	static GV coro_current, coro_idle;	881	static GV coro_current, coro_idle;
851	static AV *coro_ready[PRIO_MAX-PRIO_MIN+1];	882	static AV *coro_ready [PRIO_MAX-PRIO_MIN+1];
852	static int coro_nready;	883	static int coro_nready;
853		884
854	static void	885	static void
855	coro_enq (pTHX_ SV *sv)	886	coro_enq (pTHX_ SV *sv)
856	{	887	{
		888	int prio;
		889
857	if (SvTYPE (sv) == SVt_PVHV)	890	if (SvTYPE (sv) != SVt_PVHV)
858	{
859	SV *xprio = hv_fetch ((HV )sv, "prio", 4, 0);
860	int prio = xprio ? SvIV (*xprio) : PRIO_NORMAL;
861
862	prio = prio > PRIO_MAX ? PRIO_MAX
863	: prio < PRIO_MIN ? PRIO_MIN
864	: prio;
865
866	av_push (coro_ready [prio - PRIO_MIN], sv);
867	coro_nready++;
868
869	return;
870	}
871
872	croak ("Coro::ready tried to enqueue something that is not a coroutine");	891	croak ("Coro::ready tried to enqueue something that is not a coroutine");
		892
		893	{
		894	SV *coro = sv;
		895	SV_CORO (coro, "omg");
		896	prio = SvSTATE (coro)->prio;
		897	}
		898
		899	av_push (coro_ready [prio - PRIO_MIN], sv);
		900	coro_nready++;
873	}	901	}
874		902
875	static SV *	903	static SV *
876	coro_deq (pTHX_ int min_prio)	904	coro_deq (pTHX_ int min_prio)
877	{	905	{
…		…
880	min_prio -= PRIO_MIN;	908	min_prio -= PRIO_MIN;
881	if (min_prio < 0)	909	if (min_prio < 0)
882	min_prio = 0;	910	min_prio = 0;
883		911
884	for (prio = PRIO_MAX - PRIO_MIN + 1; --prio >= min_prio; )	912	for (prio = PRIO_MAX - PRIO_MIN + 1; --prio >= min_prio; )
885	if (av_len (coro_ready[prio]) >= 0)	913	if (AvFILLp (coro_ready [prio]) >= 0)
886	{	914	{
887	coro_nready--;	915	coro_nready--;
888	return av_shift (coro_ready[prio]);	916	return av_shift (coro_ready [prio]);
889	}	917	}
890		918
891	return 0;	919	return 0;
892	}	920	}
893		921
…		…
927		955
928	SV_CORO (next, "Coro::schedule");	956	SV_CORO (next, "Coro::schedule");
929		957
930	UNLOCK;	958	UNLOCK;
931		959
932	transfer (aTHX_ SvSTATE (prev), SvSTATE (next),	960	coro_state_transfer (aTHX_ SvSTATE (prev), SvSTATE (next),
933	TRANSFER_SAVE_ALL \| TRANSFER_LAZY_STACK);	961	TRANSFER_SAVE_ALL \| TRANSFER_LAZY_STACK);
934	}	962	}
935		963
936	static void	964	static void
937	api_cede (void)	965	api_cede (void)
938	{	966	{
…		…
945	api_schedule ();	973	api_schedule ();
946	}	974	}
947		975
948	MODULE = Coro::State PACKAGE = Coro::State	976	MODULE = Coro::State PACKAGE = Coro::State
949		977
950	PROTOTYPES: ENABLE	978	PROTOTYPES: DISABLE
951		979
952	BOOT:	980	BOOT:
953	{ /* {} necessary for stoopid perl-5.6.x */	981	{ /* {} necessary for stoopid perl-5.6.x */
954	#ifdef USE_ITHREADS	982	#ifdef USE_ITHREADS
955	MUTEX_INIT (&coro_mutex);	983	MUTEX_INIT (&coro_mutex);
956	#endif	984	#endif
		985	BOOT_PAGESIZE;
957		986
958	ucoro_state_sv = newSVpv (UCORO_STATE, sizeof(UCORO_STATE) - 1);	987	ucoro_state_sv = newSVpv (UCORO_STATE, sizeof(UCORO_STATE) - 1);
959	PERL_HASH(ucoro_state_hash, UCORO_STATE, sizeof(UCORO_STATE) - 1);	988	PERL_HASH(ucoro_state_hash, UCORO_STATE, sizeof(UCORO_STATE) - 1);
960	coro_state_stash = gv_stashpv ("Coro::State", TRUE);	989	coro_state_stash = gv_stashpv ("Coro::State", TRUE);
961		990
…		…
966		995
967	main_mainstack = PL_mainstack;	996	main_mainstack = PL_mainstack;
968		997
969	coroapi.ver = CORO_API_VERSION;	998	coroapi.ver = CORO_API_VERSION;
970	coroapi.transfer = api_transfer;	999	coroapi.transfer = api_transfer;
971	}
972		1000
973	Coro::State	1001	assert (("PRIO_NORMAL must be 0", !PRIO_NORMAL));
974	_newprocess(args)	1002	}
975	SV * args	1003
976	PROTOTYPE: $	1004	SV *
		1005	new (char *klass, ...)
977	CODE:	1006	CODE:
978	Coro__State coro;	1007	{
		1008	struct coro *coro;
		1009	HV *hv;
		1010	int i;
979		1011
980	if (!SvROK (args) \|\| SvTYPE (SvRV (args)) != SVt_PVAV)
981	croak ("Coro::State::_newprocess expects an arrayref");
982
983	Newz (0, coro, 1, struct coro);	1012	Newz (0, coro, 1, struct coro);
		1013	coro->args = newAV ();
984		1014
985	coro->args = (AV *)SvREFCNT_inc (SvRV (args));	1015	for (i = 1; i < items; i++)
		1016	av_push (coro->args, newSVsv (ST (i)));
		1017
986	/coro->mainstack = 0; //actual work is done inside transfer /	1018	/coro->mainstack = 0; //actual work is done inside transfer /
987	/coro->stack = 0;/	1019	/coro->stack = 0;/
988		1020
989	/* same as JMPENV_BOOTSTRAP */	1021	hv = newHV ();
990	/* we might be able to recycle start_env, but safe is safe */	1022	sv_magicext ((SV )hv, 0, PERL_MAGIC_ext, &coro_state_vtbl, (char )coro, 0)->mg_flags \|= MGf_DUP;
991	/Zero(&coro->start_env, 1, JMPENV);/	1023	RETVAL = sv_bless (newRV_noinc ((SV *)hv), gv_stashpv (klass, 1));
992	coro->start_env.je_ret = -1;	1024	}
993	coro->start_env.je_mustcatch = TRUE;
994
995	RETVAL = coro;
996	OUTPUT:	1025	OUTPUT:
997	RETVAL	1026	RETVAL
998		1027
999	void	1028	void
1000	transfer(prev, next, flags)	1029	transfer(prev, next, flags)
1001	SV *prev	1030	SV *prev
1002	SV *next	1031	SV *next
1003	int flags	1032	int flags
1004	PROTOTYPE: @
1005	CODE:	1033	CODE:
1006	PUTBACK;	1034	PUTBACK;
1007	SV_CORO (next, "Coro::transfer");	1035	SV_CORO (next, "Coro::transfer");
1008	SV_CORO (prev, "Coro::transfer");	1036	SV_CORO (prev, "Coro::transfer");
1009	transfer (aTHX_ SvSTATE (prev), SvSTATE (next), flags);	1037	coro_state_transfer (aTHX_ SvSTATE (prev), SvSTATE (next), flags);
1010	SPAGAIN;	1038	SPAGAIN;
1011		1039
		1040	int
		1041	prio (Coro::State coro, int newprio = 0)
		1042	ALIAS:
		1043	nice = 1
		1044	CODE:
		1045	{
		1046	RETVAL = coro->prio;
		1047
		1048	if (items > 1)
		1049	{
		1050	if (ix)
		1051	newprio += coro->prio;
		1052
		1053	if (newprio < PRIO_MIN) newprio = PRIO_MIN;
		1054	if (newprio > PRIO_MAX) newprio = PRIO_MAX;
		1055
		1056	coro->prio = newprio;
		1057	}
		1058	}
		1059
1012	void	1060	void
1013	DESTROY(coro)	1061	_clone_state_from (SV dst, SV src)
1014	Coro::State coro	1062	CODE:
1015	CODE:	1063	{
		1064	struct coro *coro_src = SvSTATE (src);
1016		1065
1017	if (coro->mainstack && coro->mainstack != main_mainstack)	1066	sv_unmagic (SvRV (dst), PERL_MAGIC_ext);
1018	{
1019	struct coro temp;
1020		1067
1021	PUTBACK;	1068	++coro_src->refcnt;
1022	SAVE (aTHX_ (&temp), TRANSFER_SAVE_ALL);	1069	sv_magicext (SvRV (dst), 0, PERL_MAGIC_ext, &coro_state_vtbl, (char *)coro_src, 0)->mg_flags \|= MGf_DUP;
1023	LOAD (aTHX_ coro);	1070	}
1024	SPAGAIN;
1025
1026	destroy_stacks (aTHX);
1027
1028	LOAD ((&temp)); /* this will get rid of defsv etc.. */
1029	SPAGAIN;
1030
1031	coro->mainstack = 0;
1032	}
1033
1034	deallocate_stack (coro);
1035	SvREFCNT_dec (coro->args);
1036	Safefree (coro);
1037		1071
1038	void	1072	void
1039	_exit(code)	1073	_exit (code)
1040	int code	1074	int code
1041	PROTOTYPE: $	1075	PROTOTYPE: $
1042	CODE:	1076	CODE:
1043	_exit (code);	1077	_exit (code);
1044		1078
1045	MODULE = Coro::State PACKAGE = Coro::Cont	1079	MODULE = Coro::State PACKAGE = Coro::Cont
1046		1080
1047	# this is slightly dirty (should expose a c-level api)
1048
1049	void	1081	void
1050	yield(...)	1082	yield (...)
1051	PROTOTYPE: @	1083	PROTOTYPE: @
1052	CODE:	1084	CODE:
1053	static SV *returnstk;	1085	SV *yieldstack;
1054	SV *sv;	1086	SV *sv;
1055	AV *defav = GvAV (PL_defgv);	1087	AV *defav = GvAV (PL_defgv);
1056	struct coro prev, next;	1088	struct coro prev, next;
1057		1089
1058	if (!returnstk)	1090	yieldstack = *hv_fetch (
1059	returnstk = SvRV ((SV *)get_sv ("Coro::Cont::return", FALSE));	1091	(HV *)SvRV (GvSV (coro_current)),
		1092	"yieldstack", sizeof ("yieldstack") - 1,
		1093	0
		1094	);
1060		1095
1061	/* set up @_ -- ugly */	1096	/* set up @_ -- ugly */
1062	av_clear (defav);	1097	av_clear (defav);
1063	av_fill (defav, items - 1);	1098	av_fill (defav, items - 1);
1064	while (items--)	1099	while (items--)
1065	av_store (defav, items, SvREFCNT_inc (ST(items)));	1100	av_store (defav, items, SvREFCNT_inc (ST(items)));
1066		1101
1067	SvGETMAGIC (returnstk); /* isn't documentation wrong for mg_get? */
1068	sv = av_pop ((AV *)SvRV (returnstk));	1102	sv = av_pop ((AV *)SvRV (yieldstack));
1069	prev = (struct coro )SvIV ((SV)SvRV (av_fetch ((AV )SvRV (sv), 0, 0)));	1103	prev = SvSTATE ((SV)SvRV (av_fetch ((AV *)SvRV (sv), 0, 0)));
1070	next = (struct coro )SvIV ((SV)SvRV (av_fetch ((AV )SvRV (sv), 1, 0)));	1104	next = SvSTATE ((SV)SvRV (av_fetch ((AV *)SvRV (sv), 1, 0)));
1071	SvREFCNT_dec (sv);	1105	SvREFCNT_dec (sv);
1072		1106
1073	transfer (aTHX_ prev, next, 0);	1107	coro_state_transfer (aTHX_ prev, next, 0);
1074		1108
1075	MODULE = Coro::State PACKAGE = Coro	1109	MODULE = Coro::State PACKAGE = Coro
1076
1077	# this is slightly dirty (should expose a c-level api)
1078		1110
1079	BOOT:	1111	BOOT:
1080	{	1112	{
1081	int i;	1113	int i;
1082	HV *stash = gv_stashpv ("Coro", TRUE);	1114	HV *stash = gv_stashpv ("Coro", TRUE);
…		…
1102	coroapi.ready = api_ready;	1134	coroapi.ready = api_ready;
1103	coroapi.nready = &coro_nready;	1135	coroapi.nready = &coro_nready;
1104	coroapi.current = coro_current;	1136	coroapi.current = coro_current;
1105		1137
1106	GCoroAPI = &coroapi;	1138	GCoroAPI = &coroapi;
1107	sv_setiv(sv, (IV)&coroapi);	1139	sv_setiv (sv, (IV)&coroapi);
1108	SvREADONLY_on(sv);	1140	SvREADONLY_on (sv);
1109	}	1141	}
1110	}	1142	}
1111		1143
1112	#if !PERL_MICRO	1144	#if !PERL_MICRO
1113		1145
1114	void	1146	void
1115	ready(self)	1147	ready (self)
1116	SV * self	1148	SV * self
1117	PROTOTYPE: $	1149	PROTOTYPE: $
1118	CODE:	1150	CODE:
1119	api_ready (self);	1151	api_ready (self);
1120		1152
1121	#endif	1153	#endif
1122		1154
1123	int	1155	int
1124	nready(...)	1156	nready (...)
1125	PROTOTYPE:	1157	PROTOTYPE:
1126	CODE:	1158	CODE:
1127	RETVAL = coro_nready;	1159	RETVAL = coro_nready;
1128	OUTPUT:	1160	OUTPUT:
1129	RETVAL	1161	RETVAL
1130		1162
1131	void	1163	void
1132	schedule(...)	1164	schedule (...)
1133	PROTOTYPE:	1165	PROTOTYPE:
1134	CODE:	1166	CODE:
1135	api_schedule ();	1167	api_schedule ();
1136		1168
1137	void	1169	void
1138	cede(...)	1170	cede (...)
1139	PROTOTYPE:	1171	PROTOTYPE:
1140	CODE:	1172	CODE:
1141	api_cede ();	1173	api_cede ();
1142		1174
		1175	# and these are hacks
		1176	SV *
		1177	_aio_get_state ()
		1178	CODE:
		1179	{
		1180	struct {
		1181	int errorno;
		1182	int laststype;
		1183	int laststatval;
		1184	Stat_t statcache;
		1185	} data;
		1186
		1187	data.errorno = errno;
		1188	data.laststype = PL_laststype;
		1189	data.laststatval = PL_laststatval;
		1190	data.statcache = PL_statcache;
		1191
		1192	RETVAL = newSVpvn ((char *)&data, sizeof data);
		1193	}
		1194	OUTPUT:
		1195	RETVAL
		1196
		1197	void
		1198	_aio_set_state (char *data_)
		1199	PROTOTYPE: $
		1200	CODE:
		1201	{
		1202	struct {
		1203	int errorno;
		1204	int laststype;
		1205	int laststatval;
		1206	Stat_t statcache;
		1207	} data = (void )data_;
		1208
		1209	errno = data->errorno;
		1210	PL_laststype = data->laststype;
		1211	PL_laststatval = data->laststatval;
		1212	PL_statcache = data->statcache;
		1213	}

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Comparing Coro/Coro/State.xs (file contents): Revision 1.61 by root, Tue Aug 10 01:56:30 2004 UTC vs. Revision 1.87 by root, Fri Nov 24 13:40:36 2006 UTC

Diff Legend

Comparing Coro/Coro/State.xs (file contents):
Revision 1.61 by root, Tue Aug 10 01:56:30 2004 UTC vs.
Revision 1.87 by root, Fri Nov 24 13:40:36 2006 UTC