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

Comparing Coro/Coro/State.xs (file contents):
Revision 1.57 by pcg, Thu Apr 22 04:14:49 2004 UTC vs.
Revision 1.94 by root, Sun Nov 26 17:14:15 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 <stdio.h>
		33	#include <errno.h>
		34
		35	#if !__i386 && !__x86_64 && !__powerpc && !__m68k && !__alpha && !__mips && !__sparc64
		36	# undef STACKGUARD
		37	#endif
		38
		39	#ifndef STACKGUARD
		40	# define STACKGUARD 0
		41	#endif
33		42
34	#ifdef HAVE_MMAP	43	#ifdef HAVE_MMAP
35	# include <unistd.h>	44	# include <unistd.h>
36	# include <sys/mman.h>	45	# include <sys/mman.h>
37	# ifndef MAP_ANONYMOUS	46	# ifndef MAP_ANONYMOUS
…		…
39	# define MAP_ANONYMOUS MAP_ANON	48	# define MAP_ANONYMOUS MAP_ANON
40	# else	49	# else
41	# undef HAVE_MMAP	50	# undef HAVE_MMAP
42	# endif	51	# endif
43	# endif	52	# endif
		53	# include <limits.h>
		54	# ifndef PAGESIZE
		55	# define PAGESIZE pagesize
		56	# define BOOT_PAGESIZE pagesize = sysconf (_SC_PAGESIZE)
		57	static long pagesize;
		58	# else
		59	# define BOOT_PAGESIZE
44	#endif	60	# endif
45		61	#endif
46	#define SUB_INIT "Coro::State::initialize"
47	#define UCORO_STATE "_coro_state"
48		62
49	/* The next macro should declare a variable stacklevel that contains and approximation	63	/* The next macro should declare a variable stacklevel that contains and approximation
50	* to the current C stack pointer. Its property is that it changes with each call	64	* to the current C stack pointer. Its property is that it changes with each call
51	* and should be unique. */	65	* and should be unique. */
		66	#define dSTACKLEVEL int stacklevel
52	#define dSTACKLEVEL void *stacklevel = &stacklevel	67	#define STACKLEVEL ((void *)&stacklevel)
53		68
54	#define IN_DESTRUCT (PL_main_cv == Nullcv)	69	#define IN_DESTRUCT (PL_main_cv == Nullcv)
55		70
56	#define labs(l) ((l) >= 0 ? (l) : -(l))
57
58	#include "CoroAPI.h"	71	#include "CoroAPI.h"
		72
		73	#define TRANSFER_SET_STACKLEVEL 0x8bfbfbfb /* magic cookie */
59		74
60	#ifdef USE_ITHREADS	75	#ifdef USE_ITHREADS
61	static perl_mutex coro_mutex;	76	static perl_mutex coro_mutex;
62	# define LOCK do { MUTEX_LOCK (&coro_mutex); } while (0)	77	# define LOCK do { MUTEX_LOCK (&coro_mutex); } while (0)
63	# define UNLOCK do { MUTEX_UNLOCK (&coro_mutex); } while (0)	78	# define UNLOCK do { MUTEX_UNLOCK (&coro_mutex); } while (0)
64	#else	79	#else
65	# define LOCK 0	80	# define LOCK (void)0
66	# define UNLOCK 0	81	# define UNLOCK (void)0
67	#endif	82	#endif
68		83
69	static struct CoroAPI coroapi;	84	static struct CoroAPI coroapi;
70	static AV main_mainstack; / used to differentiate between $main and others */	85	static AV main_mainstack; / used to differentiate between $main and others */
71	static HV *coro_state_stash;	86	static HV coro_state_stash, coro_stash;
72	static SV *ucoro_state_sv;
73	static U32 ucoro_state_hash;
74	static __thread SV coro_mortal; / will be freed after next transfer */	87	static SV coro_mortal; / will be freed after next transfer */
75		88
76	/* this is actually not only the c stack but also c registers etc... */	89	/* this is a structure representing a c-level coroutine */
77	typedef struct {	90	typedef struct coro_stack {
78	int refcnt; /* pointer reference counter */	91	struct coro_stack *next;
79	int usecnt; /* shared by how many coroutines */
80	int gencnt; /* generation counter */
81		92
82	coro_context cctx;	93	/* the stack */
83
84	void *sptr;	94	void *sptr;
85	long ssize; /* positive == mmap, otherwise malloc */	95	long ssize; /* positive == mmap, otherwise malloc */
		96
		97	/* cpu state */
		98	void idle_sp; / original stacklevel when coroutine was created */
		99	JMPENV *top_env;
		100	coro_context cctx;
86	} coro_stack;	101	} coro_stack;
87		102
		103	/* the (fake) coro_stack representing the main program */
		104	static coro_stack *main_stack;
		105
		106	/* this is a structure representing a perl-level coroutine */
88	struct coro {	107	struct coro {
89	/* the top-level JMPENV for each coroutine, needed to catch dies. */	108	/* the c coroutine allocated to this perl coroutine, if any */
90	JMPENV start_env;
91
92	/* the optional C context */
93	coro_stack *stack;	109	coro_stack *stack;
94	void *cursp;	110
		111	/* data associated with this coroutine (initial args) */
		112	AV *args;
95	int gencnt;	113	int refcnt;
96		114
97	/* optionally saved, might be zero */	115	/* optionally saved, might be zero */
98	AV *defav;	116	AV *defav;
99	SV *defsv;	117	SV *defsv;
100	SV *errsv;	118	SV *errsv;
…		…
109	AV *mainstack;	127	AV *mainstack;
110	SV **stack_sp;	128	SV **stack_sp;
111	OP *op;	129	OP *op;
112	SV **curpad;	130	SV **curpad;
113	AV *comppad;	131	AV *comppad;
		132	CV *compcv;
114	SV **stack_base;	133	SV **stack_base;
115	SV **stack_max;	134	SV **stack_max;
116	SV **tmps_stack;	135	SV **tmps_stack;
117	I32 tmps_floor;	136	I32 tmps_floor;
118	I32 tmps_ix;	137	I32 tmps_ix;
…		…
127	I32 savestack_ix;	146	I32 savestack_ix;
128	I32 savestack_max;	147	I32 savestack_max;
129	OP **retstack;	148	OP **retstack;
130	I32 retstack_ix;	149	I32 retstack_ix;
131	I32 retstack_max;	150	I32 retstack_max;
		151	PMOP *curpm;
132	COP *curcop;	152	COP *curcop;
133	JMPENV *top_env;
134		153
135	/* data associated with this coroutine (initial args) */	154	/* coro process data */
136	AV *args;	155	int prio;
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);
		216
		217	SvREFCNT_dec (av);
		218
		219	return 0;
275	}	220	}
276		221
277	#define PERL_MAGIC_coro PERL_MAGIC_ext	222	#define PERL_MAGIC_coro PERL_MAGIC_ext
278		223
279	static MGVTBL vtbl_coro = {0, 0, 0, 0, coro_cv_free};	224	static MGVTBL vtbl_coro = {0, 0, 0, 0, coro_cv_free};
280		225
281	/* the next two functions merely cache the padlists */	226	/* the next two functions merely cache the padlists */
282	STATIC void	227	static void
283	get_padlist (pTHX_ CV *cv)	228	get_padlist (pTHX_ CV *cv)
284	{	229	{
285	MAGIC mg = mg_find ((SV )cv, PERL_MAGIC_coro);	230	MAGIC mg = mg_find ((SV )cv, PERL_MAGIC_coro);
286		231
287	if (mg && AvFILLp ((AV *)mg->mg_obj) >= 0)	232	if (mg && AvFILLp ((AV *)mg->mg_obj) >= 0)
288	CvPADLIST (cv) = (AV )av_pop ((AV )mg->mg_obj);	233	CvPADLIST (cv) = (AV )av_pop ((AV )mg->mg_obj);
289	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
290	CvPADLIST (cv) = clone_padlist (aTHX_ CvPADLIST (cv));	243	CvPADLIST (cv) = coro_clone_padlist (aTHX_ cv);
		244	#endif
		245	}
291	}	246	}
292		247
293	STATIC void	248	static void
294	put_padlist (pTHX_ CV *cv)	249	put_padlist (pTHX_ CV *cv)
295	{	250	{
296	MAGIC mg = mg_find ((SV )cv, PERL_MAGIC_coro);	251	MAGIC mg = mg_find ((SV )cv, PERL_MAGIC_coro);
297		252
298	if (!mg)	253	if (!mg)
…		…
325	PL_mainstack = c->mainstack;	280	PL_mainstack = c->mainstack;
326	PL_stack_sp = c->stack_sp;	281	PL_stack_sp = c->stack_sp;
327	PL_op = c->op;	282	PL_op = c->op;
328	PL_curpad = c->curpad;	283	PL_curpad = c->curpad;
329	PL_comppad = c->comppad;	284	PL_comppad = c->comppad;
		285	PL_compcv = c->compcv;
330	PL_stack_base = c->stack_base;	286	PL_stack_base = c->stack_base;
331	PL_stack_max = c->stack_max;	287	PL_stack_max = c->stack_max;
332	PL_tmps_stack = c->tmps_stack;	288	PL_tmps_stack = c->tmps_stack;
333	PL_tmps_floor = c->tmps_floor;	289	PL_tmps_floor = c->tmps_floor;
334	PL_tmps_ix = c->tmps_ix;	290	PL_tmps_ix = c->tmps_ix;
…		…
340	PL_scopestack_ix = c->scopestack_ix;	296	PL_scopestack_ix = c->scopestack_ix;
341	PL_scopestack_max = c->scopestack_max;	297	PL_scopestack_max = c->scopestack_max;
342	PL_savestack = c->savestack;	298	PL_savestack = c->savestack;
343	PL_savestack_ix = c->savestack_ix;	299	PL_savestack_ix = c->savestack_ix;
344	PL_savestack_max = c->savestack_max;	300	PL_savestack_max = c->savestack_max;
		301	#if PERL_VERSION < 9
345	PL_retstack = c->retstack;	302	PL_retstack = c->retstack;
346	PL_retstack_ix = c->retstack_ix;	303	PL_retstack_ix = c->retstack_ix;
347	PL_retstack_max = c->retstack_max;	304	PL_retstack_max = c->retstack_max;
		305	#endif
		306	PL_curpm = c->curpm;
348	PL_curcop = c->curcop;	307	PL_curcop = c->curcop;
349	PL_top_env = c->top_env;
350		308
351	if (c->defav) REPLACE_SV (GvAV (PL_defgv), c->defav);	309	if (c->defav) REPLACE_SV (GvAV (PL_defgv), c->defav);
352	if (c->defsv) REPLACE_SV (DEFSV , c->defsv);	310	if (c->defsv) REPLACE_SV (DEFSV , c->defsv);
353	if (c->errsv) REPLACE_SV (ERRSV , c->errsv);	311	if (c->errsv) REPLACE_SV (ERRSV , c->errsv);
354		312
…		…
411	}	369	}
412		370
413	PUSHs ((SV *)CvPADLIST(cv));	371	PUSHs ((SV *)CvPADLIST(cv));
414	PUSHs ((SV *)cv);	372	PUSHs ((SV *)cv);
415		373
416	get_padlist (aTHX_ cv); /* this is a monster */	374	get_padlist (aTHX_ cv);
417	}	375	}
418	}	376	}
419	#ifdef CXt_FORMAT	377	#ifdef CXt_FORMAT
420	else if (CxTYPE(cx) == CXt_FORMAT)	378	else if (CxTYPE(cx) == CXt_FORMAT)
421	{	379	{
…		…
449	c->mainstack = PL_mainstack;	407	c->mainstack = PL_mainstack;
450	c->stack_sp = PL_stack_sp;	408	c->stack_sp = PL_stack_sp;
451	c->op = PL_op;	409	c->op = PL_op;
452	c->curpad = PL_curpad;	410	c->curpad = PL_curpad;
453	c->comppad = PL_comppad;	411	c->comppad = PL_comppad;
		412	c->compcv = PL_compcv;
454	c->stack_base = PL_stack_base;	413	c->stack_base = PL_stack_base;
455	c->stack_max = PL_stack_max;	414	c->stack_max = PL_stack_max;
456	c->tmps_stack = PL_tmps_stack;	415	c->tmps_stack = PL_tmps_stack;
457	c->tmps_floor = PL_tmps_floor;	416	c->tmps_floor = PL_tmps_floor;
458	c->tmps_ix = PL_tmps_ix;	417	c->tmps_ix = PL_tmps_ix;
…		…
464	c->scopestack_ix = PL_scopestack_ix;	423	c->scopestack_ix = PL_scopestack_ix;
465	c->scopestack_max = PL_scopestack_max;	424	c->scopestack_max = PL_scopestack_max;
466	c->savestack = PL_savestack;	425	c->savestack = PL_savestack;
467	c->savestack_ix = PL_savestack_ix;	426	c->savestack_ix = PL_savestack_ix;
468	c->savestack_max = PL_savestack_max;	427	c->savestack_max = PL_savestack_max;
		428	#if PERL_VERSION < 9
469	c->retstack = PL_retstack;	429	c->retstack = PL_retstack;
470	c->retstack_ix = PL_retstack_ix;	430	c->retstack_ix = PL_retstack_ix;
471	c->retstack_max = PL_retstack_max;	431	c->retstack_max = PL_retstack_max;
		432	#endif
		433	c->curpm = PL_curpm;
472	c->curcop = PL_curcop;	434	c->curcop = PL_curcop;
473	c->top_env = PL_top_env;
474	}	435	}
475		436
476	/*	437	/*
477	* allocate various perl stacks. This is an exact copy	438	* allocate various perl stacks. This is an exact copy
478	* of perl.c:init_stacks, except that it uses less memory	439	* of perl.c:init_stacks, except that it uses less memory
479	* on the (sometimes correct) assumption that coroutines do	440	* on the (sometimes correct) assumption that coroutines do
480	* not usually need a lot of stackspace.	441	* not usually need a lot of stackspace.
481	*/	442	*/
482	STATIC void	443	static void
483	coro_init_stacks (pTHX)	444	coro_init_stacks (pTHX)
484	{	445	{
485	LOCK;	446	LOCK;
486		447
487	PL_curstackinfo = new_stackinfo(96, 1024/sizeof(PERL_CONTEXT) - 1);	448	PL_curstackinfo = new_stackinfo(96, 1024/sizeof(PERL_CONTEXT) - 1);
…		…
512		473
513	New(54,PL_savestack,96,ANY);	474	New(54,PL_savestack,96,ANY);
514	PL_savestack_ix = 0;	475	PL_savestack_ix = 0;
515	PL_savestack_max = 96;	476	PL_savestack_max = 96;
516		477
		478	#if PERL_VERSION < 9
517	New(54,PL_retstack,8,OP*);	479	New(54,PL_retstack,8,OP*);
518	PL_retstack_ix = 0;	480	PL_retstack_ix = 0;
519	PL_retstack_max = 8;	481	PL_retstack_max = 8;
		482	#endif
520		483
521	UNLOCK;	484	UNLOCK;
522	}	485	}
523		486
524	/*	487	/*
525	* destroy the stacks, the callchain etc...	488	* destroy the stacks, the callchain etc...
526	*/	489	*/
527	STATIC void	490	static void
528	destroy_stacks(pTHX)	491	destroy_stacks(pTHX)
529	{	492	{
530	if (!IN_DESTRUCT)	493	if (!IN_DESTRUCT)
531	{	494	{
532	/* is this ugly, I ask? */	495	/* is this ugly, I ask? */
…		…
564		527
565	Safefree (PL_tmps_stack);	528	Safefree (PL_tmps_stack);
566	Safefree (PL_markstack);	529	Safefree (PL_markstack);
567	Safefree (PL_scopestack);	530	Safefree (PL_scopestack);
568	Safefree (PL_savestack);	531	Safefree (PL_savestack);
		532	#if PERL_VERSION < 9
569	Safefree (PL_retstack);	533	Safefree (PL_retstack);
570	}
571
572	static void
573	allocate_stack (Coro__State ctx, int alloc)
574	{
575	coro_stack *stack;
576
577	New (0, stack, 1, coro_stack);
578
579	stack->refcnt = 1;
580	stack->usecnt = 1;
581	stack->gencnt = ctx->gencnt = 0;
582
583	if (alloc)
584	{
585	#if HAVE_MMAP
586	stack->ssize = 16384 * sizeof (long); /* mmap should do allocate-on-write for us */
587	stack->sptr = mmap (0, stack->ssize, PROT_EXEC\|PROT_READ\|PROT_WRITE, MAP_PRIVATE\|MAP_ANONYMOUS, 0, 0);
588	if (stack->sptr == (void *)-1)
589	#endif	534	#endif
590	{
591	/FIXME//D//* reasonable stack size! */
592	stack->ssize = - (8192 * sizeof (long));
593	New (0, stack->sptr, 8192, long);
594	}
595	}
596	else
597	stack->sptr = 0;
598
599	ctx->stack = stack;
600	}	535	}
601		536
602	static void	537	static void
603	deallocate_stack (Coro__State ctx)	538	setup_coro (struct coro *coro)
604	{
605	coro_stack *stack = ctx->stack;
606
607	ctx->stack = 0;
608
609	if (stack)
610	{
611	if (!--stack->refcnt)
612	{
613	#ifdef HAVE_MMAP
614	if (stack->ssize > 0 && stack->sptr)
615	munmap (stack->sptr, stack->ssize);
616	else
617	#endif
618	Safefree (stack->sptr);
619
620	Safefree (stack);
621	}
622	else if (ctx->gencnt == stack->gencnt)
623	--stack->usecnt;
624	}
625	}
626
627	static void
628	setup_coro (void *arg)
629	{	539	{
630	/*	540	/*
631	* emulate part of the perl startup here.	541	* emulate part of the perl startup here.
632	*/	542	*/
633	dTHX;	543	dTHX;
634	dSP;	544	dSP;
635	Coro__State ctx = (Coro__State)arg;	545	UNOP myop;
636	SV sub_init = (SV )get_cv (SUB_INIT, FALSE);	546	SV sub_init = (SV )get_cv ("Coro::State::coro_init", FALSE);
637		547
638	coro_init_stacks (aTHX);	548	coro_init_stacks (aTHX);
639	/PL_curcop = 0;/	549	/PL_curcop = 0;/
640	/PL_in_eval = PL_in_eval;/ /* inherit */	550	/PL_in_eval = PL_in_eval;/ /* inherit */
641	SvREFCNT_dec (GvAV (PL_defgv));	551	SvREFCNT_dec (GvAV (PL_defgv));
642	GvAV (PL_defgv) = ctx->args; ctx->args = 0;	552	GvAV (PL_defgv) = coro->args; coro->args = 0;
643		553
644	SPAGAIN;	554	SPAGAIN;
645		555
646	if (ctx->stack)
647	{
648	ctx->cursp = 0;
649
650	PUSHMARK(SP);
651	PUTBACK;
652	(void) call_sv (sub_init, G_VOID\|G_NOARGS\|G_EVAL);
653
654	if (SvTRUE (ERRSV))
655	croak (NULL);
656	else
657	croak ("FATAL: CCTXT coroutine returned!");
658	}
659	else
660	{
661	UNOP myop;
662
663	PL_op = (OP *)&myop;
664
665	Zero(&myop, 1, UNOP);	556	Zero (&myop, 1, UNOP);
666	myop.op_next = Nullop;	557	myop.op_next = Nullop;
667	myop.op_flags = OPf_WANT_VOID;	558	myop.op_flags = OPf_WANT_VOID;
668		559
		560	PL_op = (OP *)&myop;
		561
669	PUSHMARK(SP);	562	PUSHMARK(SP);
670	XPUSHs (sub_init);	563	XPUSHs (sub_init);
671	/*
672	* the next line is slightly wrong, as PL_op->op_next
673	* is actually being executed so we skip the first op.
674	* that doesn't matter, though, since it is only
675	* pp_nextstate and we never return...
676	* ah yes, and I don't care anyways ;)
677	*/
678	PUTBACK;	564	PUTBACK;
679	PL_op = PL_ppaddr[OP_ENTERSUB](aTHX);	565	PL_op = PL_ppaddr[OP_ENTERSUB](aTHX);
680	SPAGAIN;	566	SPAGAIN;
681		567
682	ENTER; /* necessary e.g. for dounwind */	568	ENTER; /* necessary e.g. for dounwind */
683	}
684	}	569	}
685		570
686	static void	571	static void
687	continue_coro (void *arg)	572	free_coro_mortal ()
688	{	573	{
689	/*
690	* this is a _very_ stripped down perl interpreter ;)
691	*/
692	dTHX;
693	Coro__State ctx = (Coro__State)arg;
694	JMPENV coro_start_env;
695
696	PL_top_env = &ctx->start_env;
697
698	ctx->cursp = 0;
699	PL_op = PL_op->op_next;
700	CALLRUNOPS(aTHX);
701
702	abort ();
703	}
704
705	STATIC void
706	transfer (pTHX_ struct coro prev, struct coro next, int flags)
707	{
708	dSTACKLEVEL;
709
710	if (prev != next)
711	{
712	if (next->mainstack)
713	{
714	LOCK;
715	SAVE (prev, flags);
716	LOAD (next);
717	UNLOCK;
718
719	/* mark this state as in-use */
720	next->mainstack = 0;
721	next->tmps_ix = -2;
722
723	/* stacklevel changed? if yes, grab the stack for us! */
724	if (flags & TRANSFER_SAVE_CCTXT)
725	{
726	if (!prev->stack)
727	allocate_stack (prev, 0);
728	else if (prev->cursp != stacklevel
729	&& prev->stack->usecnt > 1)
730	{
731	prev->gencnt = ++prev->stack->gencnt;
732	prev->stack->usecnt = 1;
733	}
734
735	/* has our stack been invalidated? */
736	if (next->stack && next->stack->gencnt != next->gencnt)
737	{
738	deallocate_stack (next);
739	allocate_stack (next, 1);
740	coro_create (&(next->stack->cctx),
741	continue_coro, (void *)next,
742	next->stack->sptr, labs (next->stack->ssize));
743	}
744
745	coro_transfer (&(prev->stack->cctx), &(next->stack->cctx));
746	prev->cursp = stacklevel;
747	/* don't add any code here */
748	}
749	else
750	next->cursp = stacklevel;
751	}
752	else if (next->tmps_ix == -2)
753	croak ("tried to transfer to running coroutine");
754	else
755	{
756	LOCK;
757	SAVE (prev, -1); /* first get rid of the old state */
758	UNLOCK;
759
760	if (flags & TRANSFER_SAVE_CCTXT)
761	{
762	if (!prev->stack)
763	allocate_stack (prev, 0);
764
765	if (prev->stack->sptr && flags & TRANSFER_LAZY_STACK)
766	{
767	PL_top_env = &next->start_env;
768
769	setup_coro (next);
770	next->cursp = stacklevel;
771
772	prev->stack->refcnt++;
773	prev->stack->usecnt++;
774	next->stack = prev->stack;
775	next->gencnt = prev->gencnt;
776	}
777	else
778	{
779	assert (!next->stack);
780	allocate_stack (next, 1);
781	coro_create (&(next->stack->cctx),
782	setup_coro, (void *)next,
783	next->stack->sptr, labs (next->stack->ssize));
784	coro_transfer (&(prev->stack->cctx), &(next->stack->cctx));
785	prev->cursp = stacklevel;
786	/* don't add any code here */
787	}
788	}
789	else
790	{
791	setup_coro (next);
792	next->cursp = stacklevel;
793	}
794	}
795	}
796
797	LOCK;
798	if (coro_mortal)	574	if (coro_mortal)
799	{	575	{
800	SvREFCNT_dec (coro_mortal);	576	SvREFCNT_dec (coro_mortal);
801	coro_mortal = 0;	577	coro_mortal = 0;
802	}	578	}
		579	}
		580
		581	static void
		582	coro_run (void *arg)
		583	{
		584	/*
		585	* this is a _very_ stripped down perl interpreter ;)
		586	*/
		587	dTHX;
		588	int ret;
		589
803	UNLOCK;	590	UNLOCK;
804	}
805		591
806	#define SV_CORO(sv,func) \	592	PL_top_env = &PL_start_env;
807	do { \
808	if (SvROK (sv)) \
809	sv = SvRV (sv); \
810	\
811	if (SvTYPE (sv) == SVt_PVHV) \
812	{ \
813	HE he = hv_fetch_ent ((HV )sv, ucoro_state_sv, 0, ucoro_state_hash); \
814	\
815	if (!he) \
816	croak ("%s() -- %s is a hashref but lacks the " UCORO_STATE " key", func, # sv); \
817	\
818	(sv) = SvRV (HeVAL(he)); \
819	} \
820	\
821	/* must also be changed inside Coro::Cont::yield */ \
822	if (!SvOBJECT (sv) \|\| SvSTASH (sv) != coro_state_stash) \
823	croak ("%s() -- %s is not (and contains not) a Coro::State object", func, # sv); \
824	\
825	} while(0)
826		593
827	#define SvSTATE(sv) (struct coro *)SvIV (sv)	594	sv_setiv (get_sv ("Coro::State::cctx_stack", FALSE), PTR2IV ((coro_stack *)arg));
		595	sv_setiv (get_sv ("Coro::State::cctx_restartop", FALSE), PTR2IV (PL_op));
828		596
		597	/* continue at cctx_init, without entersub */
		598	PL_restartop = CvSTART (get_cv ("Coro::State::cctx_init", FALSE));
		599
		600	/* somebody will hit me for both perl_run and PL_restartop */
		601	ret = perl_run (aTHX_ PERL_GET_CONTEXT);
		602	printf ("ret %d\n", ret);//D
		603
		604	fputs ("FATAL: C coroutine fell over the edge of the world, aborting.\n", stderr);
		605	abort ();
		606	}
		607
		608	static coro_stack *
		609	stack_new ()
		610	{
		611	coro_stack *stack;
		612
		613	New (0, stack, 1, coro_stack);
		614
		615	#if HAVE_MMAP
		616
		617	stack->ssize = ((STACKSIZE * sizeof (long) + PAGESIZE - 1) / PAGESIZE + STACKGUARD) * PAGESIZE;
		618	/* mmap suppsedly does allocate-on-write for us */
		619	stack->sptr = mmap (0, stack->ssize, PROT_EXEC\|PROT_READ\|PROT_WRITE, MAP_PRIVATE\|MAP_ANONYMOUS, 0, 0);
		620
		621	if (stack->sptr == (void *)-1)
		622	{
		623	perror ("FATAL: unable to mmap stack for coroutine");
		624	_exit (EXIT_FAILURE);
		625	}
		626
		627	# if STACKGUARD
		628	mprotect (stack->sptr, STACKGUARD * PAGESIZE, PROT_NONE);
		629	# endif
		630
		631	#else
		632
		633	stack->ssize = STACKSIZE * (long)sizeof (long);
		634	New (0, stack->sptr, STACKSIZE, long);
		635
		636	if (!stack->sptr)
		637	{
		638	perror (stderr, "FATAL: unable to malloc stack for coroutine");
		639	_exit (EXIT_FAILURE);
		640	}
		641
		642	#endif
		643
		644	coro_create (&stack->cctx, coro_run, (void *)stack, stack->sptr, stack->ssize);
		645
		646	return stack;
		647	}
		648
		649	static void
		650	stack_free (coro_stack *stack)
		651	{
		652	if (!stack \|\| stack == main_stack)
		653	return;
		654
		655	#if HAVE_MMAP
		656	munmap (stack->sptr, stack->ssize);
		657	#else
		658	Safefree (stack->sptr);
		659	#endif
		660
		661	Safefree (stack);
		662	}
		663
		664	static coro_stack *stack_first;
		665
		666	static coro_stack *
		667	stack_get ()
		668	{
		669	coro_stack *stack;
		670
		671	if (stack_first)
		672	{
		673	stack = stack_first;
		674	stack_first = stack->next;
		675	}
		676	else
		677	{
		678	stack = stack_new ();
		679	PL_op = PL_op->op_next;
		680	}
		681
		682	return stack;
		683	}
		684
		685	static void
		686	stack_put (coro_stack *stack)
		687	{
		688	stack->next = stack_first;
		689	stack_first = stack;
		690	}
		691
		692	/* never call directly, always through the coro_state_transfer global variable */
		693	static void
		694	transfer_impl (pTHX_ struct coro prev, struct coro next, int flags)
		695	{
		696	dSTACKLEVEL;
		697
		698	/* sometimes transfer is only called to set idle_sp */
		699	if (flags == TRANSFER_SET_STACKLEVEL)
		700	((coro_stack *)prev)->idle_sp = STACKLEVEL;
		701	else if (prev != next)
		702	{
		703	coro_stack *prev__stack;
		704
		705	LOCK;
		706
		707	if (next->mainstack)
		708	{
		709	/* coroutine already started */
		710	SAVE (prev, flags);
		711	LOAD (next);
		712	}
		713	else
		714	{
		715	/* need to start coroutine */
		716	/* first get rid of the old state */
		717	SAVE (prev, -1);
		718	/* setup coroutine call */
		719	setup_coro (next);
		720	/* need a stack */
		721	next->stack = 0;
		722	}
		723
		724	prev__stack = prev->stack;
		725
		726	/* possibly "free" the stack */
		727	if (prev__stack->idle_sp == STACKLEVEL)
		728	{
		729	stack_put (prev__stack);
		730	prev->stack = 0;
		731	}
		732
		733	if (!next->stack)
		734	next->stack = stack_get ();
		735
		736	if (prev__stack != next->stack)
		737	{
		738	prev__stack->top_env = PL_top_env;
		739	PL_top_env = next->stack->top_env;
		740	printf ("stacksw %p %p\n", prev__stack->idle_sp, next->stack->idle_sp);//D
		741	coro_transfer (&prev__stack->cctx, &next->stack->cctx);
		742	}
		743
		744	free_coro_mortal ();
		745
		746	UNLOCK;
		747	}
		748	}
		749
		750	/* use this function pointer to call the above function */
		751	/* this is done to increase chances of the compiler not inlining the call */
		752	/* not static to make it even harder for the compiler (and theoretically impossible in most cases */
		753	void (coro_state_transfer)(pTHX_ struct coro prev, struct coro *next, int flags) = transfer_impl;
		754
		755	struct transfer_args
		756	{
		757	struct coro prev, next;
		758	int flags;
		759	};
		760
		761	#define TRANSFER(ta) coro_state_transfer ((ta).prev, (ta).next, (ta).flags)
		762
		763	static void
		764	coro_state_destroy (struct coro *coro)
		765	{
		766	if (coro->refcnt--)
		767	return;
		768
		769	if (coro->mainstack && coro->mainstack != main_mainstack)
		770	{
		771	struct coro temp;
		772
		773	SAVE (aTHX_ (&temp), TRANSFER_SAVE_ALL);
		774	LOAD (aTHX_ coro);
		775
		776	destroy_stacks (aTHX);
		777
		778	LOAD ((&temp)); /* this will get rid of defsv etc.. */
		779
		780	coro->mainstack = 0;
		781	}
		782
		783	stack_free (coro->stack);
		784	SvREFCNT_dec (coro->args);
		785	Safefree (coro);
		786	}
		787
829	static void	788	static int
		789	coro_state_clear (SV sv, MAGIC mg)
		790	{
		791	struct coro coro = (struct coro )mg->mg_ptr;
		792	mg->mg_ptr = 0;
		793
		794	coro_state_destroy (coro);
		795
		796	return 0;
		797	}
		798
		799	static int
		800	coro_state_dup (MAGIC mg, CLONE_PARAMS params)
		801	{
		802	struct coro coro = (struct coro )mg->mg_ptr;
		803
		804	++coro->refcnt;
		805
		806	return 0;
		807	}
		808
		809	static MGVTBL coro_state_vtbl = { 0, 0, 0, 0, coro_state_clear, 0, coro_state_dup, 0 };
		810
		811	static struct coro *
		812	SvSTATE (SV *coro)
		813	{
		814	HV *stash;
		815	MAGIC *mg;
		816
		817	if (SvROK (coro))
		818	coro = SvRV (coro);
		819
		820	stash = SvSTASH (coro);
		821	if (stash != coro_stash && stash != coro_state_stash)
		822	{
		823	/* very slow, but rare, check */
		824	if (!sv_derived_from (sv_2mortal (newRV_inc (coro)), "Coro::State"))
		825	croak ("Coro::State object required");
		826	}
		827
		828	mg = SvMAGIC (coro);
		829	assert (mg->mg_type == PERL_MAGIC_ext);
		830	return (struct coro *)mg->mg_ptr;
		831	}
		832
		833	static void
		834	prepare_transfer (pTHX_ struct transfer_args ta, SV prev, SV *next, int flags)
		835	{
		836	ta->prev = SvSTATE (prev);
		837	ta->next = SvSTATE (next);
		838	ta->flags = flags;
		839	}
		840
		841	static void
830	api_transfer(pTHX_ SV prev, SV next, int flags)	842	api_transfer (SV prev, SV next, int flags)
831	{	843	{
832	SV_CORO (prev, "Coro::transfer");	844	dTHX;
833	SV_CORO (next, "Coro::transfer");	845	struct transfer_args ta;
834		846
835	transfer (aTHX_ SvSTATE (prev), SvSTATE (next), flags);	847	prepare_transfer (aTHX_ &ta, prev, next, flags);
		848	TRANSFER (ta);
836	}	849	}
837		850
838	/ Coro ******************************************************************/	851	/ Coro ******************************************************************/
839		852
840	#define PRIO_MAX 3	853	#define PRIO_MAX 3
…		…
844	#define PRIO_IDLE -3	857	#define PRIO_IDLE -3
845	#define PRIO_MIN -4	858	#define PRIO_MIN -4
846		859
847	/* for Coro.pm */	860	/* for Coro.pm */
848	static GV coro_current, coro_idle;	861	static GV coro_current, coro_idle;
849	static AV *coro_ready[PRIO_MAX-PRIO_MIN+1];	862	static AV *coro_ready [PRIO_MAX-PRIO_MIN+1];
850	static int coro_nready;	863	static int coro_nready;
851		864
852	static void	865	static void
853	coro_enq (pTHX_ SV *sv)	866	coro_enq (pTHX_ SV *sv)
854	{	867	{
		868	int prio;
		869
855	if (SvTYPE (sv) == SVt_PVHV)	870	if (SvTYPE (sv) != SVt_PVHV)
856	{
857	SV *xprio = hv_fetch ((HV )sv, "prio", 4, 0);
858	int prio = xprio ? SvIV (*xprio) : PRIO_NORMAL;
859
860	prio = prio > PRIO_MAX ? PRIO_MAX
861	: prio < PRIO_MIN ? PRIO_MIN
862	: prio;
863
864	av_push (coro_ready [prio - PRIO_MIN], sv);
865	coro_nready++;
866
867	return;
868	}
869
870	croak ("Coro::ready tried to enqueue something that is not a coroutine");	871	croak ("Coro::ready tried to enqueue something that is not a coroutine");
		872
		873	prio = SvSTATE (sv)->prio;
		874
		875	av_push (coro_ready [prio - PRIO_MIN], sv);
		876	coro_nready++;
871	}	877	}
872		878
873	static SV *	879	static SV *
874	coro_deq (pTHX_ int min_prio)	880	coro_deq (pTHX_ int min_prio)
875	{	881	{
…		…
878	min_prio -= PRIO_MIN;	884	min_prio -= PRIO_MIN;
879	if (min_prio < 0)	885	if (min_prio < 0)
880	min_prio = 0;	886	min_prio = 0;
881		887
882	for (prio = PRIO_MAX - PRIO_MIN + 1; --prio >= min_prio; )	888	for (prio = PRIO_MAX - PRIO_MIN + 1; --prio >= min_prio; )
883	if (av_len (coro_ready[prio]) >= 0)	889	if (AvFILLp (coro_ready [prio]) >= 0)
884	{	890	{
885	coro_nready--;	891	coro_nready--;
886	return av_shift (coro_ready[prio]);	892	return av_shift (coro_ready [prio]);
887	}	893	}
888		894
889	return 0;	895	return 0;
890	}	896	}
891		897
…		…
901	coro_enq (aTHX_ SvREFCNT_inc (coro));	907	coro_enq (aTHX_ SvREFCNT_inc (coro));
902	UNLOCK;	908	UNLOCK;
903	}	909	}
904		910
905	static void	911	static void
906	api_schedule (void)	912	prepare_schedule (aTHX_ struct transfer_args *ta)
907	{	913	{
908	dTHX;
909
910	SV prev, next;	914	SV current, prev, *next;
911		915
912	LOCK;	916	LOCK;
913		917
914	prev = SvRV (GvSV (coro_current));	918	current = GvSV (coro_current);
		919
		920	for (;;)
		921	{
		922	LOCK;
		923
915	next = coro_deq (aTHX_ PRIO_MIN);	924	next = coro_deq (aTHX_ PRIO_MIN);
916		925
917	if (!next)	926	if (next)
918	next = SvREFCNT_inc (SvRV (GvSV (coro_idle)));	927	break;
		928
		929	UNLOCK;
		930
		931	{
		932	dSP;
		933
		934	ENTER;
		935	SAVETMPS;
		936
		937	PUSHMARK (SP);
		938	PUTBACK;
		939	call_sv (GvSV (coro_idle), G_DISCARD);
		940
		941	FREETMPS;
		942	LEAVE;
		943	}
		944	}
		945
		946	prev = SvRV (current);
		947	SvRV (current) = next;
919		948
920	/* free this only after the transfer */	949	/* free this only after the transfer */
		950	free_coro_mortal ();
921	coro_mortal = prev;	951	coro_mortal = prev;
922	SV_CORO (prev, "Coro::schedule");
923		952
924	SvRV (GvSV (coro_current)) = next;	953	ta->prev = SvSTATE (prev);
925		954	ta->next = SvSTATE (next);
926	SV_CORO (next, "Coro::schedule");	955	ta->flags = TRANSFER_SAVE_ALL;
927		956
928	UNLOCK;	957	UNLOCK;
929
930	transfer (aTHX_ SvSTATE (prev), SvSTATE (next),
931	TRANSFER_SAVE_ALL \| TRANSFER_LAZY_STACK);
932	}	958	}
933		959
934	static void	960	static void
935	api_cede (void)	961	prepare_cede (aTHX_ struct transfer_args *ta)
936	{	962	{
937	dTHX;
938
939	LOCK;	963	LOCK;
940	coro_enq (aTHX_ SvREFCNT_inc (SvRV (GvSV (coro_current))));	964	coro_enq (aTHX_ SvREFCNT_inc (SvRV (GvSV (coro_current))));
941	UNLOCK;	965	UNLOCK;
942		966
		967	prepare_schedule (ta);
		968	}
		969
		970	static void
943	api_schedule ();	971	api_schedule (void)
		972	{
		973	dTHX;
		974	struct transfer_args ta;
		975
		976	prepare_schedule (&ta);
		977	TRANSFER (ta);
		978	}
		979
		980	static void
		981	api_cede (void)
		982	{
		983	dTHX;
		984	struct transfer_args ta;
		985
		986	prepare_cede (&ta);
		987	TRANSFER (ta);
944	}	988	}
945		989
946	MODULE = Coro::State PACKAGE = Coro::State	990	MODULE = Coro::State PACKAGE = Coro::State
947		991
948	PROTOTYPES: ENABLE	992	PROTOTYPES: DISABLE
949		993
950	BOOT:	994	BOOT:
951	{ /* {} necessary for stoopid perl-5.6.x */	995	{
952	#ifdef USE_ITHREADS	996	#ifdef USE_ITHREADS
953	MUTEX_INIT (&coro_mutex);	997	MUTEX_INIT (&coro_mutex);
954	#endif	998	#endif
		999	BOOT_PAGESIZE;
955		1000
956	ucoro_state_sv = newSVpv (UCORO_STATE, sizeof(UCORO_STATE) - 1);
957	PERL_HASH(ucoro_state_hash, UCORO_STATE, sizeof(UCORO_STATE) - 1);
958	coro_state_stash = gv_stashpv ("Coro::State", TRUE);	1001	coro_state_stash = gv_stashpv ("Coro::State", TRUE);
959		1002
960	newCONSTSUB (coro_state_stash, "SAVE_DEFAV", newSViv (TRANSFER_SAVE_DEFAV));	1003	newCONSTSUB (coro_state_stash, "SAVE_DEFAV", newSViv (TRANSFER_SAVE_DEFAV));
961	newCONSTSUB (coro_state_stash, "SAVE_DEFSV", newSViv (TRANSFER_SAVE_DEFSV));	1004	newCONSTSUB (coro_state_stash, "SAVE_DEFSV", newSViv (TRANSFER_SAVE_DEFSV));
962	newCONSTSUB (coro_state_stash, "SAVE_ERRSV", newSViv (TRANSFER_SAVE_ERRSV));	1005	newCONSTSUB (coro_state_stash, "SAVE_ERRSV", newSViv (TRANSFER_SAVE_ERRSV));
963	newCONSTSUB (coro_state_stash, "SAVE_CCTXT", newSViv (TRANSFER_SAVE_CCTXT));
964		1006
965	main_mainstack = PL_mainstack;	1007	main_mainstack = PL_mainstack;
966		1008
967	coroapi.ver = CORO_API_VERSION;	1009	coroapi.ver = CORO_API_VERSION;
968	coroapi.transfer = api_transfer;	1010	coroapi.transfer = api_transfer;
969	}
970		1011
971	Coro::State	1012	Newz (0, main_stack, 1, coro_stack);
972	_newprocess(args)	1013	main_stack->idle_sp = (void *)-1;
973	SV * args	1014
974	PROTOTYPE: $	1015	assert (("PRIO_NORMAL must be 0", !PRIO_NORMAL));
		1016	}
		1017
		1018	SV *
		1019	new (char *klass, ...)
975	CODE:	1020	CODE:
976	Coro__State coro;	1021	{
		1022	struct coro *coro;
		1023	HV *hv;
		1024	int i;
977		1025
978	if (!SvROK (args) \|\| SvTYPE (SvRV (args)) != SVt_PVAV)
979	croak ("Coro::State::_newprocess expects an arrayref");
980
981	Newz (0, coro, 1, struct coro);	1026	Newz (0, coro, 1, struct coro);
		1027	coro->args = newAV ();
982		1028
983	coro->args = (AV *)SvREFCNT_inc (SvRV (args));	1029	hv = newHV ();
		1030	sv_magicext ((SV )hv, 0, PERL_MAGIC_ext, &coro_state_vtbl, (char )coro, 0)->mg_flags \|= MGf_DUP;
		1031	RETVAL = sv_bless (newRV_noinc ((SV *)hv), gv_stashpv (klass, 1));
		1032
		1033	for (i = 1; i < items; i++)
		1034	av_push (coro->args, newSVsv (ST (i)));
		1035
		1036	coro->stack = main_stack;
984	coro->mainstack = 0; /* actual work is done inside transfer */	1037	/coro->mainstack = 0; //actual work is done inside transfer /
985	coro->stack = 0;	1038	/coro->stack = 0;/
986		1039	}
987	/* same as JMPENV_BOOTSTRAP */
988	/* we might be able to recycle start_env, but safe is safe */
989	//Zero(&coro->start_env, 1, JMPENV);
990	coro->start_env.je_ret = -1;
991	coro->start_env.je_mustcatch = TRUE;
992
993	RETVAL = coro;
994	OUTPUT:	1040	OUTPUT:
995	RETVAL	1041	RETVAL
996		1042
997	void	1043	void
998	transfer(prev, next, flags)	1044	_set_stacklevel (...)
999	SV *prev	1045	ALIAS:
1000	SV *next	1046	Coro::State::transfer = 1
1001	int flags	1047	Coro::schedule = 2
1002	PROTOTYPE: @	1048	Coro::cede = 3
		1049	Coro::Cont::yield = 4
1003	CODE:	1050	CODE:
1004	PUTBACK;	1051	{
1005	SV_CORO (next, "Coro::transfer");	1052	struct transfer_args ta;
1006	SV_CORO (prev, "Coro::transfer");	1053
1007	transfer (aTHX_ SvSTATE (prev), SvSTATE (next), flags);	1054	switch (ix)
1008	SPAGAIN;	1055	{
		1056	case 0:
		1057	ta.prev = (struct coro )INT2PTR (coro_stack , SvIV (ST (0)));
		1058	ta.next = 0;
		1059	ta.flags = TRANSFER_SET_STACKLEVEL;
		1060	break;
		1061
		1062	case 1:
		1063	if (items != 3)
		1064	croak ("Coro::State::transfer(prev,next,flags) expects three arguments, not %d", items);
		1065
		1066	prepare_transfer (&ta, ST (0), ST (1), SvIV (ST (2)));
		1067	break;
		1068
		1069	case 2:
		1070	prepare_schedule (&ta);
		1071	break;
		1072
		1073	case 3:
		1074	prepare_cede (&ta);
		1075	break;
		1076
		1077	case 4:
		1078	{
		1079	SV *yieldstack;
		1080	SV *sv;
		1081	AV *defav = GvAV (PL_defgv);
		1082
		1083	yieldstack = *hv_fetch (
		1084	(HV *)SvRV (GvSV (coro_current)),
		1085	"yieldstack", sizeof ("yieldstack") - 1,
		1086	0
		1087	);
		1088
		1089	/* set up @_ -- ugly */
		1090	av_clear (defav);
		1091	av_fill (defav, items - 1);
		1092	while (items--)
		1093	av_store (defav, items, SvREFCNT_inc (ST(items)));
		1094
		1095	sv = av_pop ((AV *)SvRV (yieldstack));
		1096	ta.prev = SvSTATE (av_fetch ((AV )SvRV (sv), 0, 0));
		1097	ta.next = SvSTATE (av_fetch ((AV )SvRV (sv), 1, 0));
		1098	ta.flags = 0;
		1099	SvREFCNT_dec (sv);
		1100	}
		1101	break;
		1102
		1103	}
		1104
		1105	TRANSFER (ta);
		1106	}
1009		1107
1010	void	1108	void
1011	DESTROY(coro)	1109	_clone_state_from (SV dst, SV src)
1012	Coro::State coro	1110	CODE:
1013	CODE:	1111	{
		1112	struct coro *coro_src = SvSTATE (src);
1014		1113
1015	if (coro->mainstack && coro->mainstack != main_mainstack)	1114	sv_unmagic (SvRV (dst), PERL_MAGIC_ext);
1016	{
1017	struct coro temp;
1018		1115
1019	PUTBACK;	1116	++coro_src->refcnt;
1020	SAVE(aTHX_ (&temp), TRANSFER_SAVE_ALL);	1117	sv_magicext (SvRV (dst), 0, PERL_MAGIC_ext, &coro_state_vtbl, (char *)coro_src, 0)->mg_flags \|= MGf_DUP;
1021	LOAD(aTHX_ coro);	1118	}
1022	SPAGAIN;
1023
1024	destroy_stacks (aTHX);
1025
1026	LOAD((&temp)); /* this will get rid of defsv etc.. */
1027	SPAGAIN;
1028
1029	coro->mainstack = 0;
1030	}
1031
1032	deallocate_stack (coro);
1033	SvREFCNT_dec (coro->args);
1034	Safefree (coro);
1035		1119
1036	void	1120	void
		1121	_nonlocal_goto (IV nextop)
		1122	CODE:
		1123	/* uuh, somebody will kill me again for this */
		1124	PL_op->op_next = INT2PTR (OP *, nextop);
		1125
		1126	void
1037	_exit(code)	1127	_exit (code)
1038	int code	1128	int code
1039	PROTOTYPE: $	1129	PROTOTYPE: $
1040	CODE:	1130	CODE:
1041	_exit (code);	1131	_exit (code);
1042		1132
1043	MODULE = Coro::State PACKAGE = Coro::Cont
1044
1045	# this is slightly dirty (should expose a c-level api)
1046
1047	void
1048	yield(...)
1049	PROTOTYPE: @
1050	CODE:
1051	static SV *returnstk;
1052	SV *sv;
1053	AV *defav = GvAV (PL_defgv);
1054	struct coro prev, next;
1055
1056	if (!returnstk)
1057	returnstk = SvRV ((SV *)get_sv ("Coro::Cont::return", FALSE));
1058
1059	/* set up @_ -- ugly */
1060	av_clear (defav);
1061	av_fill (defav, items - 1);
1062	while (items--)
1063	av_store (defav, items, SvREFCNT_inc (ST(items)));
1064
1065	mg_get (returnstk); /* isn't documentation wrong for mg_get? */
1066	sv = av_pop ((AV *)SvRV (returnstk));
1067	prev = (struct coro )SvIV ((SV)SvRV (av_fetch ((AV )SvRV (sv), 0, 0)));
1068	next = (struct coro )SvIV ((SV)SvRV (av_fetch ((AV )SvRV (sv), 1, 0)));
1069	SvREFCNT_dec (sv);
1070
1071	transfer(aTHX_ prev, next, 0);
1072
1073	MODULE = Coro::State PACKAGE = Coro	1133	MODULE = Coro::State PACKAGE = Coro
1074		1134
1075	# this is slightly dirty (should expose a c-level api)
1076
1077	BOOT:	1135	BOOT:
1078	{	1136	{
1079	int i;	1137	int i;
		1138
1080	HV *stash = gv_stashpv ("Coro", TRUE);	1139	coro_stash = gv_stashpv ("Coro", TRUE);
1081		1140
1082	newCONSTSUB (stash, "PRIO_MAX", newSViv (PRIO_MAX));	1141	newCONSTSUB (coro_stash, "PRIO_MAX", newSViv (PRIO_MAX));
1083	newCONSTSUB (stash, "PRIO_HIGH", newSViv (PRIO_HIGH));	1142	newCONSTSUB (coro_stash, "PRIO_HIGH", newSViv (PRIO_HIGH));
1084	newCONSTSUB (stash, "PRIO_NORMAL", newSViv (PRIO_NORMAL));	1143	newCONSTSUB (coro_stash, "PRIO_NORMAL", newSViv (PRIO_NORMAL));
1085	newCONSTSUB (stash, "PRIO_LOW", newSViv (PRIO_LOW));	1144	newCONSTSUB (coro_stash, "PRIO_LOW", newSViv (PRIO_LOW));
1086	newCONSTSUB (stash, "PRIO_IDLE", newSViv (PRIO_IDLE));	1145	newCONSTSUB (coro_stash, "PRIO_IDLE", newSViv (PRIO_IDLE));
1087	newCONSTSUB (stash, "PRIO_MIN", newSViv (PRIO_MIN));	1146	newCONSTSUB (coro_stash, "PRIO_MIN", newSViv (PRIO_MIN));
1088		1147
1089	coro_current = gv_fetchpv ("Coro::current", TRUE, SVt_PV);	1148	coro_current = gv_fetchpv ("Coro::current", TRUE, SVt_PV);
1090	coro_idle = gv_fetchpv ("Coro::idle" , TRUE, SVt_PV);	1149	coro_idle = gv_fetchpv ("Coro::idle" , TRUE, SVt_PV);
1091		1150
1092	for (i = PRIO_MAX - PRIO_MIN + 1; i--; )	1151	for (i = PRIO_MAX - PRIO_MIN + 1; i--; )
…		…
1100	coroapi.ready = api_ready;	1159	coroapi.ready = api_ready;
1101	coroapi.nready = &coro_nready;	1160	coroapi.nready = &coro_nready;
1102	coroapi.current = coro_current;	1161	coroapi.current = coro_current;
1103		1162
1104	GCoroAPI = &coroapi;	1163	GCoroAPI = &coroapi;
1105	sv_setiv(sv, (IV)&coroapi);	1164	sv_setiv (sv, (IV)&coroapi);
1106	SvREADONLY_on(sv);	1165	SvREADONLY_on (sv);
1107	}	1166	}
1108	}	1167	}
1109		1168
1110	#if !PERL_MICRO	1169	int
		1170	prio (Coro::State coro, int newprio = 0)
		1171	ALIAS:
		1172	nice = 1
		1173	CODE:
		1174	{
		1175	RETVAL = coro->prio;
		1176
		1177	if (items > 1)
		1178	{
		1179	if (ix)
		1180	newprio += coro->prio;
		1181
		1182	if (newprio < PRIO_MIN) newprio = PRIO_MIN;
		1183	if (newprio > PRIO_MAX) newprio = PRIO_MAX;
		1184
		1185	coro->prio = newprio;
		1186	}
		1187	}
1111		1188
1112	void	1189	void
1113	ready(self)	1190	ready (SV *self)
1114	SV * self
1115	PROTOTYPE: $	1191	PROTOTYPE: $
1116	CODE:	1192	CODE:
1117	api_ready (self);	1193	api_ready (self);
1118		1194
1119	#endif
1120
1121	int	1195	int
1122	nready(...)	1196	nready (...)
1123	PROTOTYPE:	1197	PROTOTYPE:
1124	CODE:	1198	CODE:
1125	RETVAL = coro_nready;	1199	RETVAL = coro_nready;
1126	OUTPUT:	1200	OUTPUT:
1127	RETVAL	1201	RETVAL
1128		1202
		1203	MODULE = Coro::State PACKAGE = Coro::AIO
		1204
		1205	SV *
		1206	_get_state ()
		1207	CODE:
		1208	{
		1209	struct {
		1210	int errorno;
		1211	int laststype;
		1212	int laststatval;
		1213	Stat_t statcache;
		1214	} data;
		1215
		1216	data.errorno = errno;
		1217	data.laststype = PL_laststype;
		1218	data.laststatval = PL_laststatval;
		1219	data.statcache = PL_statcache;
		1220
		1221	RETVAL = newSVpvn ((char *)&data, sizeof data);
		1222	}
		1223	OUTPUT:
		1224	RETVAL
		1225
1129	void	1226	void
1130	schedule(...)	1227	_set_state (char *data_)
1131	PROTOTYPE:	1228	PROTOTYPE: $
1132	CODE:	1229	CODE:
1133	api_schedule ();	1230	{
		1231	struct {
		1232	int errorno;
		1233	int laststype;
		1234	int laststatval;
		1235	Stat_t statcache;
		1236	} data = (void )data_;
1134		1237
1135	void	1238	errno = data->errorno;
1136	cede(...)	1239	PL_laststype = data->laststype;
1137	PROTOTYPE:	1240	PL_laststatval = data->laststatval;
1138	CODE:	1241	PL_statcache = data->statcache;
1139	api_cede ();	1242	}
1140

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Comparing Coro/Coro/State.xs (file contents): Revision 1.57 by pcg, Thu Apr 22 04:14:49 2004 UTC vs. Revision 1.94 by root, Sun Nov 26 17:14:15 2006 UTC

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Comparing Coro/Coro/State.xs (file contents):
Revision 1.57 by pcg, Thu Apr 22 04:14:49 2004 UTC vs.
Revision 1.94 by root, Sun Nov 26 17:14:15 2006 UTC