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

Comparing Coro/Coro/State.xs (file contents):
Revision 1.96 by root, Sun Nov 26 18:25:11 2006 UTC vs.
Revision 1.126 by root, Tue Dec 12 04:19:56 2006 UTC

…		…
1	#define PERL_NO_GET_CONTEXT
2
3	#include "libcoro/coro.c"	1	#include "libcoro/coro.c"
4		2
5	#include "EXTERN.h"	3	#include "EXTERN.h"
6	#include "perl.h"	4	#include "perl.h"
7	#include "XSUB.h"	5	#include "XSUB.h"
8		6
9	#include "patchlevel.h"	7	#include "patchlevel.h"
10		8
11	#if PERL_VERSION < 6	9	#if USE_VALGRIND
		10	# include <valgrind/valgrind.h>
		11	#endif
		12
		13	/* the maximum number of idle cctx that will be pooled */
		14	#define MAX_IDLE_CCTX 8
		15
		16	#define PERL_VERSION_ATLEAST(a,b,c) \
		17	(PERL_REVISION > (a) \
		18	\|\| (PERL_REVISION == (a) \
		19	&& (PERL_VERSION > (b) \
		20	\|\| (PERL_VERSION == (b) && PERLSUBVERSION >= (c)))))
		21
		22	#if !PERL_VERSION_ATLEAST (5,6,0)
12	# ifndef PL_ppaddr	23	# ifndef PL_ppaddr
13	# define PL_ppaddr ppaddr	24	# define PL_ppaddr ppaddr
14	# endif	25	# endif
15	# ifndef call_sv	26	# ifndef call_sv
16	# define call_sv perl_call_sv	27	# define call_sv perl_call_sv
27	# ifndef IS_PADCONST	38	# ifndef IS_PADCONST
28	# define IS_PADCONST(v) 0	39	# define IS_PADCONST(v) 0
29	# endif	40	# endif
30	#endif	41	#endif
31		42
		43	/* 5.8.7 */
		44	#ifndef SvRV_set
		45	# define SvRV_set(s,v) SvRV(s) = (v)
		46	#endif
		47
32	#include <stdio.h>	48	#include <stdio.h>
33	#include <errno.h>	49	#include <errno.h>
		50	#include <assert.h>
34		51
35	#if !__i386 && !__x86_64 && !__powerpc && !__m68k && !__alpha && !__mips && !__sparc64	52	#if !__i386 && !__x86_64 && !__powerpc && !__m68k && !__alpha && !__mips && !__sparc64
36	# undef STACKGUARD	53	# undef STACKGUARD
37	#endif	54	#endif
38		55
…		…
54	# ifndef PAGESIZE	71	# ifndef PAGESIZE
55	# define PAGESIZE pagesize	72	# define PAGESIZE pagesize
56	# define BOOT_PAGESIZE pagesize = sysconf (_SC_PAGESIZE)	73	# define BOOT_PAGESIZE pagesize = sysconf (_SC_PAGESIZE)
57	static long pagesize;	74	static long pagesize;
58	# else	75	# else
59	# define BOOT_PAGESIZE	76	# define BOOT_PAGESIZE (void)0
60	# endif	77	# endif
		78	#else
		79	# define PAGESIZE 0
		80	# define BOOT_PAGESIZE (void)0
61	#endif	81	#endif
62		82
63	/* The next macro should declare a variable stacklevel that contains and approximation	83	/* The next macro should declare a variable stacklevel that contains and approximation
64	* to the current C stack pointer. Its property is that it changes with each call	84	* to the current C stack pointer. Its property is that it changes with each call
65	* and should be unique. */	85	* and should be unique. */
66	#define dSTACKLEVEL int stacklevel	86	#define dSTACKLEVEL int stacklevel
67	#define STACKLEVEL ((void *)&stacklevel)	87	#define STACKLEVEL ((void *)&stacklevel)
68		88
69	#define IN_DESTRUCT (PL_main_cv == Nullcv)	89	#define IN_DESTRUCT (PL_main_cv == Nullcv)
70		90
		91	#if __GNUC__ >= 3
		92	# define attribute(x) __attribute__(x)
		93	#else
		94	# define attribute(x)
		95	#endif
		96
		97	#define NOINLINE attribute ((noinline))
		98
71	#include "CoroAPI.h"	99	#include "CoroAPI.h"
72
73	#define TRANSFER_SET_STACKLEVEL 0x8bfbfbfb /* magic cookie */
74		100
75	#ifdef USE_ITHREADS	101	#ifdef USE_ITHREADS
76	static perl_mutex coro_mutex;	102	static perl_mutex coro_mutex;
77	# define LOCK do { MUTEX_LOCK (&coro_mutex); } while (0)	103	# define LOCK do { MUTEX_LOCK (&coro_mutex); } while (0)
78	# define UNLOCK do { MUTEX_UNLOCK (&coro_mutex); } while (0)	104	# define UNLOCK do { MUTEX_UNLOCK (&coro_mutex); } while (0)
79	#else	105	#else
80	# define LOCK (void)0	106	# define LOCK (void)0
81	# define UNLOCK (void)0	107	# define UNLOCK (void)0
82	#endif	108	#endif
83		109
		110	struct io_state
		111	{
		112	int errorno;
		113	I32 laststype;
		114	int laststatval;
		115	Stat_t statcache;
		116	};
		117
84	static struct CoroAPI coroapi;	118	static struct CoroAPI coroapi;
85	static AV main_mainstack; / used to differentiate between $main and others */	119	static AV main_mainstack; / used to differentiate between $main and others */
86	static HV coro_state_stash, coro_stash;	120	static HV coro_state_stash, coro_stash;
87	static SV coro_mortal; / will be freed after next transfer */	121	static SV coro_mortal; / will be freed after next transfer */
88		122
		123	static struct coro_cctx *cctx_first;
		124	static int cctx_count, cctx_idle;
		125
89	/* this is a structure representing a c-level coroutine */	126	/* this is a structure representing a c-level coroutine */
90	typedef struct coro_stack {	127	typedef struct coro_cctx {
91	struct coro_stack *next;	128	struct coro_cctx *next;
92		129
93	/* the stack */	130	/* the stack */
94	void *sptr;	131	void *sptr;
95	long ssize; /* positive == mmap, otherwise malloc */	132	long ssize; /* positive == mmap, otherwise malloc */
96		133
97	/* cpu state */	134	/* cpu state */
98	void idle_sp; / sp of top-level transfer/schedule/cede call */	135	void idle_sp; / sp of top-level transfer/schedule/cede call */
99	JMPENV *top_env;	136	JMPENV *top_env;
100	coro_context cctx;	137	coro_context cctx;
101	} coro_stack;	138
		139	int inuse;
		140
		141	#if USE_VALGRIND
		142	int valgrind_id;
		143	#endif
		144	} coro_cctx;
		145
		146	enum {
		147	CF_RUNNING = 0x0001, /* coroutine is running */
		148	CF_READY = 0x0002, /* coroutine is ready */
		149	CF_NEW = 0x0004, /* ahs never been switched to */
		150	};
102		151
103	/* this is a structure representing a perl-level coroutine */	152	/* this is a structure representing a perl-level coroutine */
104	struct coro {	153	struct coro {
105	/* the c coroutine allocated to this perl coroutine, if any */	154	/* the c coroutine allocated to this perl coroutine, if any */
106	coro_stack *stack;	155	coro_cctx *cctx;
107		156
108	/* data associated with this coroutine (initial args) */	157	/* data associated with this coroutine (initial args) */
109	AV *args;	158	AV *args;
110	int refcnt;	159	int refcnt;
		160	int save; /* CORO_SAVE flags */
		161	int flags; /* CF_ flags */
111		162
112	/* optionally saved, might be zero */	163	/* optionally saved, might be zero */
113	AV *defav;	164	AV defav; / @_ */
114	SV *defsv;	165	SV defsv; / $_ */
115	SV *errsv;	166	SV errsv; / $@ */
		167	SV irssv; / $/ */
		168	SV irssv_sv; / real $/ cache */
116		169
117	/* saved global state not related to stacks */	170	#define VAR(name,type) type name;
118	U8 dowarn;	171	# include "state.h"
119	I32 in_eval;	172	#undef VAR
120
121	/* the stacks and related info (callchain etc..) */
122	PERL_SI *curstackinfo;
123	AV *curstack;
124	AV *mainstack;
125	SV **stack_sp;
126	OP *op;
127	SV **curpad;
128	AV *comppad;
129	CV *compcv;
130	SV **stack_base;
131	SV **stack_max;
132	SV **tmps_stack;
133	I32 tmps_floor;
134	I32 tmps_ix;
135	I32 tmps_max;
136	I32 *markstack;
137	I32 *markstack_ptr;
138	I32 *markstack_max;
139	I32 *scopestack;
140	I32 scopestack_ix;
141	I32 scopestack_max;
142	ANY *savestack;
143	I32 savestack_ix;
144	I32 savestack_max;
145	OP **retstack;
146	I32 retstack_ix;
147	I32 retstack_max;
148	PMOP *curpm;
149	COP *curcop;
150		173
151	/* coro process data */	174	/* coro process data */
152	int prio;	175	int prio;
153	};	176	};
154		177
155	typedef struct coro *Coro__State;	178	typedef struct coro *Coro__State;
156	typedef struct coro *Coro__State_or_hashref;	179	typedef struct coro *Coro__State_or_hashref;
157		180
158	static AV *	181	static AV *
159	coro_clone_padlist (pTHX_ CV *cv)	182	coro_clone_padlist (CV *cv)
160	{	183	{
161	AV *padlist = CvPADLIST (cv);	184	AV *padlist = CvPADLIST (cv);
162	AV newpadlist, newpad;	185	AV newpadlist, newpad;
163		186
164	newpadlist = newAV ();	187	newpadlist = newAV ();
165	AvREAL_off (newpadlist);	188	AvREAL_off (newpadlist);
166	#if PERL_VERSION < 9	189	#if PERL_VERSION_ATLEAST (5,9,0)
		190	Perl_pad_push (aTHX_ padlist, AvFILLp (padlist) + 1);
		191	#else
167	Perl_pad_push (aTHX_ padlist, AvFILLp (padlist) + 1, 1);	192	Perl_pad_push (aTHX_ padlist, AvFILLp (padlist) + 1, 1);
168	#else
169	Perl_pad_push (aTHX_ padlist, AvFILLp (padlist) + 1);
170	#endif	193	#endif
171	newpad = (AV *)AvARRAY (padlist)[AvFILLp (padlist)];	194	newpad = (AV *)AvARRAY (padlist)[AvFILLp (padlist)];
172	--AvFILLp (padlist);	195	--AvFILLp (padlist);
173		196
174	av_store (newpadlist, 0, SvREFCNT_inc (*av_fetch (padlist, 0, FALSE)));	197	av_store (newpadlist, 0, SvREFCNT_inc (*av_fetch (padlist, 0, FALSE)));
…		…
176		199
177	return newpadlist;	200	return newpadlist;
178	}	201	}
179		202
180	static void	203	static void
181	free_padlist (pTHX_ AV *padlist)	204	free_padlist (AV *padlist)
182	{	205	{
183	/* may be during global destruction */	206	/* may be during global destruction */
184	if (SvREFCNT (padlist))	207	if (SvREFCNT (padlist))
185	{	208	{
186	I32 i = AvFILLp (padlist);	209	I32 i = AvFILLp (padlist);
…		…
207	AV *padlist;	230	AV *padlist;
208	AV av = (AV )mg->mg_obj;	231	AV av = (AV )mg->mg_obj;
209		232
210	/* casting is fun. */	233	/* casting is fun. */
211	while (&PL_sv_undef != (SV )(padlist = (AV )av_pop (av)))	234	while (&PL_sv_undef != (SV )(padlist = (AV )av_pop (av)))
212	free_padlist (aTHX_ padlist);	235	free_padlist (padlist);
213		236
214	SvREFCNT_dec (av);	237	SvREFCNT_dec (av);
215		238
216	return 0;	239	return 0;
217	}	240	}
218		241
219	#define PERL_MAGIC_coro PERL_MAGIC_ext	242	#define PERL_MAGIC_coro PERL_MAGIC_ext
220		243
221	static MGVTBL vtbl_coro = {0, 0, 0, 0, coro_cv_free};	244	static MGVTBL vtbl_coro = {0, 0, 0, 0, coro_cv_free};
222		245
		246	#define CORO_MAGIC(cv) \
		247	SvMAGIC (cv) \
		248	? SvMAGIC (cv)->mg_type == PERL_MAGIC_coro \
		249	? SvMAGIC (cv) \
		250	: mg_find ((SV *)cv, PERL_MAGIC_coro) \
		251	: 0
		252
223	/* the next two functions merely cache the padlists */	253	/* the next two functions merely cache the padlists */
224	static void	254	static void
225	get_padlist (pTHX_ CV *cv)	255	get_padlist (CV *cv)
226	{	256	{
227	MAGIC mg = mg_find ((SV )cv, PERL_MAGIC_coro);	257	MAGIC *mg = CORO_MAGIC (cv);
		258	AV *av;
228		259
229	if (mg && AvFILLp ((AV *)mg->mg_obj) >= 0)	260	if (mg && AvFILLp ((av = (AV *)mg->mg_obj)) >= 0)
230	CvPADLIST (cv) = (AV )av_pop ((AV )mg->mg_obj);	261	CvPADLIST (cv) = (AV *)AvARRAY (av)[AvFILLp (av)--];
231	else	262	else
232	{	263	{
233	#if 0	264	#if 0
234	/* this is probably cleaner, but also slower? */	265	/* this is probably cleaner, but also slower? */
235	CV *cp = Perl_cv_clone (aTHX_ cv);	266	CV *cp = Perl_cv_clone (cv);
236	CvPADLIST (cv) = CvPADLIST (cp);	267	CvPADLIST (cv) = CvPADLIST (cp);
237	CvPADLIST (cp) = 0;	268	CvPADLIST (cp) = 0;
238	SvREFCNT_dec (cp);	269	SvREFCNT_dec (cp);
239	#else	270	#else
240	CvPADLIST (cv) = coro_clone_padlist (aTHX_ cv);	271	CvPADLIST (cv) = coro_clone_padlist (cv);
241	#endif	272	#endif
242	}	273	}
243	}	274	}
244		275
245	static void	276	static void
246	put_padlist (pTHX_ CV *cv)	277	put_padlist (CV *cv)
247	{	278	{
248	MAGIC mg = mg_find ((SV )cv, PERL_MAGIC_coro);	279	MAGIC *mg = CORO_MAGIC (cv);
		280	AV *av;
249		281
250	if (!mg)	282	if (!mg)
251	{	283	{
252	sv_magic ((SV *)cv, 0, PERL_MAGIC_coro, 0, 0);	284	sv_magic ((SV *)cv, 0, PERL_MAGIC_coro, 0, 0);
253	mg = mg_find ((SV *)cv, PERL_MAGIC_coro);	285	mg = mg_find ((SV *)cv, PERL_MAGIC_coro);
254	mg->mg_virtual = &vtbl_coro;	286	mg->mg_virtual = &vtbl_coro;
255	mg->mg_obj = (SV *)newAV ();	287	mg->mg_obj = (SV *)newAV ();
256	}	288	}
257		289
258	av_push ((AV )mg->mg_obj, (SV )CvPADLIST (cv));	290	av = (AV *)mg->mg_obj;
		291
		292	if (AvFILLp (av) >= AvMAX (av))
		293	av_extend (av, AvMAX (av) + 1);
		294
		295	AvARRAY (av)[++AvFILLp (av)] = (SV *)CvPADLIST (cv);
259	}	296	}
260		297
261	#define SB do {	298	#define SB do {
262	#define SE } while (0)	299	#define SE } while (0)
263		300
264	#define LOAD(state) load_state(aTHX_ (state));
265	#define SAVE(state,flags) save_state(aTHX_ (state),(flags));
266
267	#define REPLACE_SV(sv,val) SB SvREFCNT_dec(sv); (sv) = (val); (val) = 0; SE	301	#define REPLACE_SV(sv,val) SB SvREFCNT_dec (sv); (sv) = (val); (val) = 0; SE
268		302
269	static void	303	static void
270	load_state(pTHX_ Coro__State c)	304	load_perl (Coro__State c)
271	{	305	{
272	PL_dowarn = c->dowarn;	306	#define VAR(name,type) PL_ ## name = c->name;
273	PL_in_eval = c->in_eval;	307	# include "state.h"
274		308	#undef VAR
275	PL_curstackinfo = c->curstackinfo;
276	PL_curstack = c->curstack;
277	PL_mainstack = c->mainstack;
278	PL_stack_sp = c->stack_sp;
279	PL_op = c->op;
280	PL_curpad = c->curpad;
281	PL_comppad = c->comppad;
282	PL_compcv = c->compcv;
283	PL_stack_base = c->stack_base;
284	PL_stack_max = c->stack_max;
285	PL_tmps_stack = c->tmps_stack;
286	PL_tmps_floor = c->tmps_floor;
287	PL_tmps_ix = c->tmps_ix;
288	PL_tmps_max = c->tmps_max;
289	PL_markstack = c->markstack;
290	PL_markstack_ptr = c->markstack_ptr;
291	PL_markstack_max = c->markstack_max;
292	PL_scopestack = c->scopestack;
293	PL_scopestack_ix = c->scopestack_ix;
294	PL_scopestack_max = c->scopestack_max;
295	PL_savestack = c->savestack;
296	PL_savestack_ix = c->savestack_ix;
297	PL_savestack_max = c->savestack_max;
298	#if PERL_VERSION < 9
299	PL_retstack = c->retstack;
300	PL_retstack_ix = c->retstack_ix;
301	PL_retstack_max = c->retstack_max;
302	#endif
303	PL_curpm = c->curpm;
304	PL_curcop = c->curcop;
305		309
306	if (c->defav) REPLACE_SV (GvAV (PL_defgv), c->defav);	310	if (c->defav) REPLACE_SV (GvAV (PL_defgv), c->defav);
307	if (c->defsv) REPLACE_SV (DEFSV , c->defsv);	311	if (c->defsv) REPLACE_SV (DEFSV , c->defsv);
308	if (c->errsv) REPLACE_SV (ERRSV , c->errsv);	312	if (c->errsv) REPLACE_SV (ERRSV , c->errsv);
		313	if (c->irssv)
		314	{
		315	if (c->irssv == PL_rs \|\| sv_eq (PL_rs, c->irssv))
		316	SvREFCNT_dec (c->irssv);
		317	else
		318	{
		319	REPLACE_SV (PL_rs, c->irssv);
		320	if (!c->irssv_sv) c->irssv_sv = get_sv ("/", 0);
		321	sv_setsv (c->irssv_sv, PL_rs);
		322	}
		323	}
309		324
310	{	325	{
311	dSP;	326	dSP;
312	CV *cv;	327	CV *cv;
313		328
314	/* now do the ugly restore mess */	329	/* now do the ugly restore mess */
315	while ((cv = (CV *)POPs))	330	while ((cv = (CV *)POPs))
316	{	331	{
317	AV padlist = (AV )POPs;
318
319	if (padlist)
320	{
321	put_padlist (aTHX_ cv); /* mark this padlist as available */	332	put_padlist (cv); /* mark this padlist as available */
322	CvPADLIST(cv) = padlist;	333	CvDEPTH (cv) = PTR2IV (POPs);
323	}	334	CvPADLIST (cv) = (AV *)POPs;
324
325	++CvDEPTH(cv);
326	}	335	}
327		336
328	PUTBACK;	337	PUTBACK;
329	}	338	}
330	}	339	}
331		340
332	static void	341	static void
333	save_state(pTHX_ Coro__State c, int flags)	342	save_perl (Coro__State c)
334	{	343	{
335	{	344	{
336	dSP;	345	dSP;
337	I32 cxix = cxstack_ix;	346	I32 cxix = cxstack_ix;
338	PERL_CONTEXT *ccstk = cxstack;	347	PERL_CONTEXT *ccstk = cxstack;
…		…
341	/*	350	/*
342	* the worst thing you can imagine happens first - we have to save	351	* the worst thing you can imagine happens first - we have to save
343	* (and reinitialize) all cv's in the whole callchain :(	352	* (and reinitialize) all cv's in the whole callchain :(
344	*/	353	*/
345		354
		355	EXTEND (SP, 3 + 1);
346	PUSHs (Nullsv);	356	PUSHs (Nullsv);
347	/* this loop was inspired by pp_caller */	357	/* this loop was inspired by pp_caller */
348	for (;;)	358	for (;;)
349	{	359	{
350	while (cxix >= 0)	360	while (cxix >= 0)
351	{	361	{
352	PERL_CONTEXT *cx = &ccstk[cxix--];	362	PERL_CONTEXT *cx = &ccstk[cxix--];
353		363
354	if (CxTYPE(cx) == CXt_SUB)	364	if (CxTYPE (cx) == CXt_SUB)
355	{	365	{
356	CV *cv = cx->blk_sub.cv;	366	CV *cv = cx->blk_sub.cv;
		367
357	if (CvDEPTH(cv))	368	if (CvDEPTH (cv))
358	{	369	{
359	EXTEND (SP, CvDEPTH(cv)*2);	370	EXTEND (SP, 3);
360
361	while (--CvDEPTH(cv))
362	{
363	/* this tells the restore code to increment CvDEPTH */
364	PUSHs (Nullsv);
365	PUSHs ((SV *)cv);
366	}
367
368	PUSHs ((SV *)CvPADLIST(cv));	371	PUSHs ((SV *)CvPADLIST (cv));
		372	PUSHs (INT2PTR (SV *, CvDEPTH (cv)));
369	PUSHs ((SV *)cv);	373	PUSHs ((SV *)cv);
370		374
		375	CvDEPTH (cv) = 0;
371	get_padlist (aTHX_ cv);	376	get_padlist (cv);
372	}	377	}
373	}	378	}
374	#ifdef CXt_FORMAT
375	else if (CxTYPE(cx) == CXt_FORMAT)
376	{
377	/* I never used formats, so how should I know how these are implemented? */
378	/* my bold guess is as a simple, plain sub... */
379	croak ("CXt_FORMAT not yet handled. Don't switch coroutines from within formats");
380	}
381	#endif
382	}	379	}
383		380
384	if (top_si->si_type == PERLSI_MAIN)	381	if (top_si->si_type == PERLSI_MAIN)
385	break;	382	break;
386		383
…		…
390	}	387	}
391		388
392	PUTBACK;	389	PUTBACK;
393	}	390	}
394		391
395	c->defav = flags & TRANSFER_SAVE_DEFAV ? (AV *)SvREFCNT_inc (GvAV (PL_defgv)) : 0;	392	c->defav = c->save & CORO_SAVE_DEFAV ? (AV *)SvREFCNT_inc (GvAV (PL_defgv)) : 0;
396	c->defsv = flags & TRANSFER_SAVE_DEFSV ? SvREFCNT_inc (DEFSV) : 0;	393	c->defsv = c->save & CORO_SAVE_DEFSV ? SvREFCNT_inc (DEFSV) : 0;
397	c->errsv = flags & TRANSFER_SAVE_ERRSV ? SvREFCNT_inc (ERRSV) : 0;	394	c->errsv = c->save & CORO_SAVE_ERRSV ? SvREFCNT_inc (ERRSV) : 0;
		395	c->irssv = c->save & CORO_SAVE_IRSSV ? SvREFCNT_inc (PL_rs) : 0;
398		396
399	c->dowarn = PL_dowarn;	397	#define VAR(name,type)c->name = PL_ ## name;
400	c->in_eval = PL_in_eval;	398	# include "state.h"
401		399	#undef VAR
402	c->curstackinfo = PL_curstackinfo;
403	c->curstack = PL_curstack;
404	c->mainstack = PL_mainstack;
405	c->stack_sp = PL_stack_sp;
406	c->op = PL_op;
407	c->curpad = PL_curpad;
408	c->comppad = PL_comppad;
409	c->compcv = PL_compcv;
410	c->stack_base = PL_stack_base;
411	c->stack_max = PL_stack_max;
412	c->tmps_stack = PL_tmps_stack;
413	c->tmps_floor = PL_tmps_floor;
414	c->tmps_ix = PL_tmps_ix;
415	c->tmps_max = PL_tmps_max;
416	c->markstack = PL_markstack;
417	c->markstack_ptr = PL_markstack_ptr;
418	c->markstack_max = PL_markstack_max;
419	c->scopestack = PL_scopestack;
420	c->scopestack_ix = PL_scopestack_ix;
421	c->scopestack_max = PL_scopestack_max;
422	c->savestack = PL_savestack;
423	c->savestack_ix = PL_savestack_ix;
424	c->savestack_max = PL_savestack_max;
425	#if PERL_VERSION < 9
426	c->retstack = PL_retstack;
427	c->retstack_ix = PL_retstack_ix;
428	c->retstack_max = PL_retstack_max;
429	#endif
430	c->curpm = PL_curpm;
431	c->curcop = PL_curcop;
432	}	400	}
433		401
434	/*	402	/*
435	* allocate various perl stacks. This is an exact copy	403	* allocate various perl stacks. This is an exact copy
436	* of perl.c:init_stacks, except that it uses less memory	404	* of perl.c:init_stacks, except that it uses less memory
437	* on the (sometimes correct) assumption that coroutines do	405	* on the (sometimes correct) assumption that coroutines do
438	* not usually need a lot of stackspace.	406	* not usually need a lot of stackspace.
439	*/	407	*/
		408	#if USE_PERL_INIT_STACKS
		409	# define coro_init_stacks init_stacks
		410	#else
		411
440	static void	412	static void
441	coro_init_stacks (pTHX)	413	coro_init_stacks ()
442	{	414	{
443	LOCK;
444
445	PL_curstackinfo = new_stackinfo(96, 1024/sizeof(PERL_CONTEXT) - 1);	415	PL_curstackinfo = new_stackinfo(128, 1024/sizeof(PERL_CONTEXT));
446	PL_curstackinfo->si_type = PERLSI_MAIN;	416	PL_curstackinfo->si_type = PERLSI_MAIN;
447	PL_curstack = PL_curstackinfo->si_stack;	417	PL_curstack = PL_curstackinfo->si_stack;
448	PL_mainstack = PL_curstack; /* remember in case we switch stacks */	418	PL_mainstack = PL_curstack; /* remember in case we switch stacks */
449		419
450	PL_stack_base = AvARRAY(PL_curstack);	420	PL_stack_base = AvARRAY(PL_curstack);
451	PL_stack_sp = PL_stack_base;	421	PL_stack_sp = PL_stack_base;
452	PL_stack_max = PL_stack_base + AvMAX(PL_curstack);	422	PL_stack_max = PL_stack_base + AvMAX(PL_curstack);
453		423
454	New(50,PL_tmps_stack,96,SV*);	424	New(50,PL_tmps_stack,128,SV*);
455	PL_tmps_floor = -1;	425	PL_tmps_floor = -1;
456	PL_tmps_ix = -1;	426	PL_tmps_ix = -1;
457	PL_tmps_max = 96;	427	PL_tmps_max = 128;
458		428
459	New(54,PL_markstack,16,I32);	429	New(54,PL_markstack,32,I32);
460	PL_markstack_ptr = PL_markstack;	430	PL_markstack_ptr = PL_markstack;
461	PL_markstack_max = PL_markstack + 16;	431	PL_markstack_max = PL_markstack + 32;
462		432
463	#ifdef SET_MARK_OFFSET	433	#ifdef SET_MARK_OFFSET
464	SET_MARK_OFFSET;	434	SET_MARK_OFFSET;
465	#endif	435	#endif
466		436
467	New(54,PL_scopestack,16,I32);	437	New(54,PL_scopestack,32,I32);
468	PL_scopestack_ix = 0;	438	PL_scopestack_ix = 0;
469	PL_scopestack_max = 16;	439	PL_scopestack_max = 32;
470		440
471	New(54,PL_savestack,96,ANY);	441	New(54,PL_savestack,64,ANY);
472	PL_savestack_ix = 0;	442	PL_savestack_ix = 0;
473	PL_savestack_max = 96;	443	PL_savestack_max = 64;
474		444
475	#if PERL_VERSION < 9	445	#if !PERL_VERSION_ATLEAST (5,9,0)
476	New(54,PL_retstack,8,OP*);	446	New(54,PL_retstack,16,OP*);
477	PL_retstack_ix = 0;	447	PL_retstack_ix = 0;
478	PL_retstack_max = 8;	448	PL_retstack_max = 16;
479	#endif	449	#endif
480
481	UNLOCK;
482	}	450	}
483		451
484	/*	452	/*
485	* destroy the stacks, the callchain etc...	453	* destroy the stacks, the callchain etc...
486	*/	454	*/
487	static void	455	static void
488	destroy_stacks(pTHX)	456	coro_destroy_stacks ()
489	{	457	{
490	if (!IN_DESTRUCT)	458	if (!IN_DESTRUCT)
491	{	459	{
492	/* is this ugly, I ask? */	460	/* restore all saved variables and stuff */
493	LEAVE_SCOPE (0);	461	LEAVE_SCOPE (0);
		462	assert (PL_tmps_floor == -1);
494		463
495	/* sure it is, but more important: is it correct?? :/ */	464	/* free all temporaries */
496	FREETMPS;	465	FREETMPS;
		466	assert (PL_tmps_ix == -1);
497		467
498	/POPSTACK_TO (PL_mainstack);//D//use/	468	POPSTACK_TO (PL_mainstack);
499	}	469	}
500		470
501	while (PL_curstackinfo->si_next)	471	while (PL_curstackinfo->si_next)
502	PL_curstackinfo = PL_curstackinfo->si_next;	472	PL_curstackinfo = PL_curstackinfo->si_next;
503		473
504	while (PL_curstackinfo)	474	while (PL_curstackinfo)
505	{	475	{
506	PERL_SI *p = PL_curstackinfo->si_prev;	476	PERL_SI *p = PL_curstackinfo->si_prev;
507		477
508	{ /D//remove/
509	dSP;
510	SWITCHSTACK (PL_curstack, PL_curstackinfo->si_stack);
511	PUTBACK; /* possibly superfluous */
512	}
513
514	if (!IN_DESTRUCT)	478	if (!IN_DESTRUCT)
515	{
516	dounwind (-1);/D//remove/
517	SvREFCNT_dec (PL_curstackinfo->si_stack);	479	SvREFCNT_dec (PL_curstackinfo->si_stack);
518	}
519		480
520	Safefree (PL_curstackinfo->si_cxstack);	481	Safefree (PL_curstackinfo->si_cxstack);
521	Safefree (PL_curstackinfo);	482	Safefree (PL_curstackinfo);
522	PL_curstackinfo = p;	483	PL_curstackinfo = p;
523	}	484	}
524		485
525	Safefree (PL_tmps_stack);	486	Safefree (PL_tmps_stack);
526	Safefree (PL_markstack);	487	Safefree (PL_markstack);
527	Safefree (PL_scopestack);	488	Safefree (PL_scopestack);
528	Safefree (PL_savestack);	489	Safefree (PL_savestack);
529	#if PERL_VERSION < 9	490	#if !PERL_VERSION_ATLEAST (5,9,0)
530	Safefree (PL_retstack);	491	Safefree (PL_retstack);
531	#endif	492	#endif
532	}	493	}
		494	#endif
533		495
534	static void	496	static void
535	setup_coro (struct coro *coro)	497	setup_coro (struct coro *coro)
536	{	498	{
537	/*	499	/*
538	* emulate part of the perl startup here.	500	* emulate part of the perl startup here.
539	*/	501	*/
540	dTHX;
541	dSP;
542	UNOP myop;
543	SV sub_init = (SV )get_cv ("Coro::State::coro_init", FALSE);
544		502
545	coro_init_stacks (aTHX);	503	coro_init_stacks ();
546	/PL_curcop = 0;/	504
547	/PL_in_eval = PL_in_eval;/ /* inherit */	505	PL_curcop = &PL_compiling;
		506	PL_in_eval = EVAL_NULL;
		507	PL_curpm = 0;
		508	PL_localizing = 0;
		509	PL_dirty = 0;
		510	PL_restartop = 0;
		511
		512	{
		513	dSP;
		514	LOGOP myop;
		515
548	SvREFCNT_dec (GvAV (PL_defgv));	516	SvREFCNT_dec (GvAV (PL_defgv));
549	GvAV (PL_defgv) = coro->args; coro->args = 0;	517	GvAV (PL_defgv) = coro->args; coro->args = 0;
550		518
551	SPAGAIN;
552
553	Zero (&myop, 1, UNOP);	519	Zero (&myop, 1, LOGOP);
554	myop.op_next = Nullop;	520	myop.op_next = Nullop;
555	myop.op_flags = OPf_WANT_VOID;	521	myop.op_flags = OPf_WANT_VOID;
556		522
		523	PUSHMARK (SP);
		524	XPUSHs ((SV *)get_cv ("Coro::State::_coro_init", FALSE));
		525	PUTBACK;
557	PL_op = (OP *)&myop;	526	PL_op = (OP *)&myop;
558
559	PUSHMARK(SP);
560	XPUSHs (sub_init);
561	PUTBACK;
562	PL_op = PL_ppaddr[OP_ENTERSUB](aTHX);	527	PL_op = PL_ppaddr[OP_ENTERSUB](aTHX);
563	SPAGAIN;	528	SPAGAIN;
		529	}
564		530
565	ENTER; /* necessary e.g. for dounwind */	531	ENTER; /* necessary e.g. for dounwind */
566	}	532	}
567		533
568	static void	534	static void
…		…
573	SvREFCNT_dec (coro_mortal);	539	SvREFCNT_dec (coro_mortal);
574	coro_mortal = 0;	540	coro_mortal = 0;
575	}	541	}
576	}	542	}
577		543
		544	/* inject a fake call to Coro::State::_cctx_init into the execution */
		545	static void NOINLINE
		546	prepare_cctx (coro_cctx *cctx)
		547	{
		548	dSP;
		549	LOGOP myop;
		550
		551	Zero (&myop, 1, LOGOP);
		552	myop.op_next = PL_op;
		553	myop.op_flags = OPf_WANT_VOID \| OPf_STACKED;
		554
		555	PUSHMARK (SP);
		556	EXTEND (SP, 2);
		557	PUSHs (sv_2mortal (newSViv (PTR2IV (cctx))));
		558	PUSHs ((SV *)get_cv ("Coro::State::_cctx_init", FALSE));
		559	PUTBACK;
		560	PL_op = (OP *)&myop;
		561	PL_op = PL_ppaddr[OP_ENTERSUB](aTHX);
		562	SPAGAIN;
		563	}
		564
578	static void	565	static void
579	coro_run (void *arg)	566	coro_run (void *arg)
580	{	567	{
		568	/* coro_run is the alternative tail of transfer(), so unlock here. */
		569	UNLOCK;
		570
581	/*	571	/*
582	* this is a _very_ stripped down perl interpreter ;)	572	* this is a _very_ stripped down perl interpreter ;)
583	*/	573	*/
584	dTHX;
585	int ret;
586
587	UNLOCK;
588
589	PL_top_env = &PL_start_env;	574	PL_top_env = &PL_start_env;
590		575
591	sv_setiv (get_sv ("Coro::State::cctx_stack", FALSE), PTR2IV ((coro_stack *)arg));	576	/* inject call to cctx_init */
592	sv_setiv (get_sv ("Coro::State::cctx_restartop", FALSE), PTR2IV (PL_op));	577	prepare_cctx ((coro_cctx *)arg);
593
594	/* continue at cctx_init, without entersub */
595	PL_restartop = CvSTART (get_cv ("Coro::State::cctx_init", FALSE));
596		578
597	/* somebody will hit me for both perl_run and PL_restartop */	579	/* somebody will hit me for both perl_run and PL_restartop */
598	ret = perl_run (aTHX_ PERL_GET_CONTEXT);	580	PL_restartop = PL_op;
599	printf ("ret %d\n", ret);//D	581	perl_run (PL_curinterp);
600		582
601	fputs ("FATAL: C coroutine fell over the edge of the world, aborting.\n", stderr);	583	fputs ("FATAL: C coroutine fell over the edge of the world, aborting. Did you call exit in a coroutine?\n", stderr);
602	abort ();	584	abort ();
603	}	585	}
604		586
605	static coro_stack *	587	static coro_cctx *
606	stack_new ()	588	cctx_new ()
607	{	589	{
608	coro_stack *stack;	590	coro_cctx *cctx;
609		591
		592	++cctx_count;
		593
610	New (0, stack, 1, coro_stack);	594	Newz (0, cctx, 1, coro_cctx);
611		595
612	#if HAVE_MMAP	596	#if HAVE_MMAP
613		597
614	stack->ssize = ((STACKSIZE * sizeof (long) + PAGESIZE - 1) / PAGESIZE + STACKGUARD) * PAGESIZE;	598	cctx->ssize = ((STACKSIZE * sizeof (long) + PAGESIZE - 1) / PAGESIZE + STACKGUARD) * PAGESIZE;
615	/* mmap suppsedly does allocate-on-write for us */	599	/* mmap supposedly does allocate-on-write for us */
616	stack->sptr = mmap (0, stack->ssize, PROT_EXEC\|PROT_READ\|PROT_WRITE, MAP_PRIVATE\|MAP_ANONYMOUS, 0, 0);	600	cctx->sptr = mmap (0, cctx->ssize, PROT_EXEC\|PROT_READ\|PROT_WRITE, MAP_PRIVATE\|MAP_ANONYMOUS, 0, 0);
617		601
618	if (stack->sptr == (void *)-1)	602	if (cctx->sptr == (void *)-1)
619	{	603	{
620	perror ("FATAL: unable to mmap stack for coroutine");	604	perror ("FATAL: unable to mmap stack for coroutine");
621	_exit (EXIT_FAILURE);	605	_exit (EXIT_FAILURE);
622	}	606	}
623		607
624	# if STACKGUARD	608	# if STACKGUARD
625	mprotect (stack->sptr, STACKGUARD * PAGESIZE, PROT_NONE);	609	mprotect (cctx->sptr, STACKGUARD * PAGESIZE, PROT_NONE);
626	# endif	610	# endif
627		611
628	#else	612	#else
629		613
630	stack->ssize = STACKSIZE * (long)sizeof (long);	614	cctx->ssize = STACKSIZE * (long)sizeof (long);
631	New (0, stack->sptr, STACKSIZE, long);	615	New (0, cctx->sptr, STACKSIZE, long);
632		616
633	if (!stack->sptr)	617	if (!cctx->sptr)
634	{	618	{
635	perror (stderr, "FATAL: unable to malloc stack for coroutine");	619	perror ("FATAL: unable to malloc stack for coroutine");
636	_exit (EXIT_FAILURE);	620	_exit (EXIT_FAILURE);
637	}	621	}
638		622
639	#endif	623	#endif
640		624
		625	#if USE_VALGRIND
		626	cctx->valgrind_id = VALGRIND_STACK_REGISTER (
		627	STACKGUARD * PAGESIZE + (char *)cctx->sptr,
		628	cctx->ssize + (char *)cctx->sptr
		629	);
		630	#endif
		631
641	coro_create (&stack->cctx, coro_run, (void *)stack, stack->sptr, stack->ssize);	632	coro_create (&cctx->cctx, coro_run, (void *)cctx, cctx->sptr, cctx->ssize);
642		633
643	return stack;	634	return cctx;
644	}	635	}
645		636
646	static void	637	static void
647	stack_free (coro_stack *stack)	638	cctx_destroy (coro_cctx *cctx)
648	{	639	{
649	if (!stack)	640	if (!cctx)
650	return;	641	return;
651		642
		643	--cctx_count;
		644
		645	#if USE_VALGRIND
		646	VALGRIND_STACK_DEREGISTER (cctx->valgrind_id);
		647	#endif
		648
652	#if HAVE_MMAP	649	#if HAVE_MMAP
653	munmap (stack->sptr, stack->ssize);	650	munmap (cctx->sptr, cctx->ssize);
654	#else	651	#else
655	Safefree (stack->sptr);	652	Safefree (cctx->sptr);
656	#endif	653	#endif
657		654
658	Safefree (stack);	655	Safefree (cctx);
659	}	656	}
660		657
661	static coro_stack *stack_first;
662
663	static coro_stack *	658	static coro_cctx *
664	stack_get ()	659	cctx_get ()
665	{	660	{
666	coro_stack *stack;	661	coro_cctx *cctx;
667		662
668	if (stack_first)	663	if (cctx_first)
669	{	664	{
670	stack = stack_first;	665	cctx = cctx_first;
671	stack_first = stack->next;	666	cctx_first = cctx->next;
		667	--cctx_idle;
672	}	668	}
673	else	669	else
674	{	670	{
675	stack = stack_new ();	671	cctx = cctx_new ();
676	PL_op = PL_op->op_next;	672	PL_op = PL_op->op_next;
677	}	673	}
678		674
679	return stack;	675	return cctx;
680	}	676	}
681		677
682	static void	678	static void
683	stack_put (coro_stack *stack)	679	cctx_put (coro_cctx *cctx)
684	{	680	{
685	stack->next = stack_first;	681	/* free another cctx if overlimit */
686	stack_first = stack;	682	if (cctx_idle >= MAX_IDLE_CCTX)
		683	{
		684	coro_cctx *first = cctx_first;
		685	cctx_first = first->next;
		686	--cctx_idle;
		687
		688	assert (!first->inuse);
		689	cctx_destroy (first);
		690	}
		691
		692	++cctx_idle;
		693	cctx->next = cctx_first;
		694	cctx_first = cctx;
687	}	695	}
688		696
689	/* never call directly, always through the coro_state_transfer global variable */	697	/* never call directly, always through the coro_state_transfer global variable */
690	static void	698	static void NOINLINE
691	transfer_impl (pTHX_ struct coro prev, struct coro next, int flags)	699	transfer (struct coro prev, struct coro next)
692	{	700	{
693	dSTACKLEVEL;	701	dSTACKLEVEL;
694		702
695	/* sometimes transfer is only called to set idle_sp */	703	/* sometimes transfer is only called to set idle_sp */
696	if (flags == TRANSFER_SET_STACKLEVEL)	704	if (!next)
		705	{
697	((coro_stack *)prev)->idle_sp = STACKLEVEL;	706	((coro_cctx *)prev)->idle_sp = STACKLEVEL;
		707	assert (((coro_cctx )prev)->top_env = PL_top_env); / just for the side effetc when assert is enabled */
		708	}
698	else if (prev != next)	709	else if (prev != next)
699	{	710	{
700	coro_stack *prev__stack;	711	coro_cctx *prev__cctx;
		712
		713	if (prev->flags & CF_NEW)
		714	{
		715	/* create a new empty context */
		716	Newz (0, prev->cctx, 1, coro_cctx);
		717	prev->cctx->inuse = 1;
		718	prev->flags &= ~CF_NEW;
		719	prev->flags \|= CF_RUNNING;
		720	}
		721
		722	/TODO: must not croak here /
		723	if (!prev->flags & CF_RUNNING)
		724	croak ("Coro::State::transfer called with non-running prev Coro::State, but can only transfer from running states");
		725
		726	if (next->flags & CF_RUNNING)
		727	croak ("Coro::State::transfer called with running next Coro::State, but can only transfer to inactive states");
		728
		729	prev->flags &= ~CF_RUNNING;
		730	next->flags \|= CF_RUNNING;
701		731
702	LOCK;	732	LOCK;
703		733
704	if (next->mainstack)	734	if (next->flags & CF_NEW)
705	{	735	{
706	/* coroutine already started */	736	/* need to start coroutine */
707	SAVE (prev, flags);	737	next->flags &= ~CF_NEW;
708	LOAD (next);	738	/* first get rid of the old state */
		739	save_perl (prev);
		740	/* setup coroutine call */
		741	setup_coro (next);
		742	/* need a new stack */
		743	assert (!next->cctx);
709	}	744	}
710	else	745	else
711	{	746	{
712	/* need to start coroutine */	747	/* coroutine already started */
713	/* first get rid of the old state */	748	save_perl (prev);
714	SAVE (prev, -1);	749	load_perl (next);
715	/* setup coroutine call */
716	setup_coro (next);
717	/* need a stack */
718	next->stack = 0;
719	}	750	}
720		751
721	if (!prev->stack)
722	/* create a new empty context */
723	Newz (0, prev->stack, 1, coro_stack);
724
725	prev__stack = prev->stack;	752	prev__cctx = prev->cctx;
726		753
727	/* possibly "free" the stack */	754	/* possibly "free" the cctx */
728	if (prev__stack->idle_sp == STACKLEVEL)	755	if (prev__cctx->idle_sp == STACKLEVEL)
729	{	756	{
730	stack_put (prev__stack);	757	/* I assume that STACKLEVEL is a stronger indicator than PL_top_env changes */
		758	assert (PL_top_env == prev__cctx->top_env);
		759
731	prev->stack = 0;	760	prev->cctx = 0;
		761
		762	cctx_put (prev__cctx);
		763	prev__cctx->inuse = 0;
732	}	764	}
733		765
734	if (!next->stack)	766	if (!next->cctx)
735	next->stack = stack_get ();
736
737	if (prev__stack != next->stack)
738	{	767	{
		768	next->cctx = cctx_get ();
		769	assert (!next->cctx->inuse);
		770	next->cctx->inuse = 1;
		771	}
		772
		773	if (prev__cctx != next->cctx)
		774	{
739	prev__stack->top_env = PL_top_env;	775	prev__cctx->top_env = PL_top_env;
740	PL_top_env = next->stack->top_env;	776	PL_top_env = next->cctx->top_env;
741	coro_transfer (&prev__stack->cctx, &next->stack->cctx);	777	coro_transfer (&prev__cctx->cctx, &next->cctx->cctx);
742	}	778	}
743		779
744	free_coro_mortal ();	780	free_coro_mortal ();
745		781
746	UNLOCK;	782	UNLOCK;
747	}	783	}
748	}	784	}
749		785
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	786	struct transfer_args
756	{	787	{
757	struct coro prev, next;	788	struct coro prev, next;
758	int flags;
759	};	789	};
760		790
761	#define TRANSFER(ta) coro_state_transfer ((ta).prev, (ta).next, (ta).flags)	791	#define TRANSFER(ta) transfer ((ta).prev, (ta).next)
762		792
763	static void	793	static void
764	coro_state_destroy (struct coro *coro)	794	coro_state_destroy (struct coro *coro)
765	{	795	{
766	if (coro->refcnt--)	796	if (coro->refcnt--)
767	return;	797	return;
768		798
769	if (coro->mainstack && coro->mainstack != main_mainstack)	799	if (coro->mainstack && coro->mainstack != main_mainstack)
770	{	800	{
771	struct coro temp;	801	struct coro temp;
		802	Zero (&temp, 1, struct coro);
		803	temp.save = CORO_SAVE_ALL;
772		804
773	SAVE (aTHX_ (&temp), TRANSFER_SAVE_ALL);	805	if (coro->flags & CF_RUNNING)
774	LOAD (aTHX_ coro);	806	croak ("FATAL: tried to destroy currently running coroutine");
775		807
		808	save_perl (&temp);
		809	load_perl (coro);
		810
776	destroy_stacks (aTHX);	811	coro_destroy_stacks ();
777		812
778	LOAD ((&temp)); /* this will get rid of defsv etc.. */	813	load_perl (&temp); /* this will get rid of defsv etc.. */
779		814
780	coro->mainstack = 0;	815	coro->mainstack = 0;
781	}	816	}
782		817
783	stack_free (coro->stack);	818	cctx_destroy (coro->cctx);
784	SvREFCNT_dec (coro->args);	819	SvREFCNT_dec (coro->args);
785	Safefree (coro);	820	Safefree (coro);
786	}	821	}
787		822
788	static int	823	static int
789	coro_state_clear (SV sv, MAGIC mg)	824	coro_state_clear (pTHX_ SV sv, MAGIC mg)
790	{	825	{
791	struct coro coro = (struct coro )mg->mg_ptr;	826	struct coro coro = (struct coro )mg->mg_ptr;
792	mg->mg_ptr = 0;	827	mg->mg_ptr = 0;
793		828
794	coro_state_destroy (coro);	829	coro_state_destroy (coro);
795		830
796	return 0;	831	return 0;
797	}	832	}
798		833
799	static int	834	static int
800	coro_state_dup (MAGIC mg, CLONE_PARAMS params)	835	coro_state_dup (pTHX_ MAGIC mg, CLONE_PARAMS params)
801	{	836	{
802	struct coro coro = (struct coro )mg->mg_ptr;	837	struct coro coro = (struct coro )mg->mg_ptr;
803		838
804	++coro->refcnt;	839	++coro->refcnt;
805		840
806	return 0;	841	return 0;
807	}	842	}
808		843
809	static MGVTBL coro_state_vtbl = { 0, 0, 0, 0, coro_state_clear, 0, coro_state_dup, 0 };	844	static MGVTBL coro_state_vtbl = {
		845	0, 0, 0, 0,
		846	coro_state_clear,
		847	0,
		848	#ifdef MGf_DUP
		849	coro_state_dup,
		850	#else
		851	# define MGf_DUP 0
		852	#endif
		853	};
810		854
811	static struct coro *	855	static struct coro *
812	SvSTATE (SV *coro)	856	SvSTATE (SV *coro)
813	{	857	{
814	HV *stash;	858	HV *stash;
…		…
829	assert (mg->mg_type == PERL_MAGIC_ext);	873	assert (mg->mg_type == PERL_MAGIC_ext);
830	return (struct coro *)mg->mg_ptr;	874	return (struct coro *)mg->mg_ptr;
831	}	875	}
832		876
833	static void	877	static void
834	prepare_transfer (pTHX_ struct transfer_args ta, SV prev, SV *next, int flags)	878	prepare_transfer (struct transfer_args ta, SV prev_sv, SV *next_sv)
835	{	879	{
836	ta->prev = SvSTATE (prev);	880	ta->prev = SvSTATE (prev_sv);
837	ta->next = SvSTATE (next);	881	ta->next = SvSTATE (next_sv);
838	ta->flags = flags;
839	}	882	}
840		883
841	static void	884	static void
842	api_transfer (SV prev, SV next, int flags)	885	api_transfer (SV prev_sv, SV next_sv)
843	{	886	{
844	dTHX;
845	struct transfer_args ta;	887	struct transfer_args ta;
846		888
847	prepare_transfer (aTHX_ &ta, prev, next, flags);	889	prepare_transfer (&ta, prev_sv, next_sv);
848	TRANSFER (ta);	890	TRANSFER (ta);
		891	}
		892
		893	static int
		894	api_save (SV *coro_sv, int new_save)
		895	{
		896	struct coro *coro = SvSTATE (coro_sv);
		897	int old_save = coro->save;
		898
		899	if (new_save >= 0)
		900	coro->save = new_save;
		901
		902	return old_save;
849	}	903	}
850		904
851	/ Coro ******************************************************************/	905	/ Coro ******************************************************************/
852		906
853	#define PRIO_MAX 3	907	#define PRIO_MAX 3
…		…
856	#define PRIO_LOW -1	910	#define PRIO_LOW -1
857	#define PRIO_IDLE -3	911	#define PRIO_IDLE -3
858	#define PRIO_MIN -4	912	#define PRIO_MIN -4
859		913
860	/* for Coro.pm */	914	/* for Coro.pm */
861	static GV coro_current, coro_idle;	915	static SV *coro_current;
862	static AV *coro_ready [PRIO_MAX-PRIO_MIN+1];	916	static AV *coro_ready [PRIO_MAX-PRIO_MIN+1];
863	static int coro_nready;	917	static int coro_nready;
864		918
865	static void	919	static void
866	coro_enq (pTHX_ SV *sv)	920	coro_enq (SV *coro_sv)
867	{	921	{
868	int prio;
869
870	if (SvTYPE (sv) != SVt_PVHV)
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);	922	av_push (coro_ready [SvSTATE (coro_sv)->prio - PRIO_MIN], coro_sv);
876	coro_nready++;	923	coro_nready++;
877	}	924	}
878		925
879	static SV *	926	static SV *
880	coro_deq (pTHX_ int min_prio)	927	coro_deq (int min_prio)
881	{	928	{
882	int prio = PRIO_MAX - PRIO_MIN;	929	int prio = PRIO_MAX - PRIO_MIN;
883		930
884	min_prio -= PRIO_MIN;	931	min_prio -= PRIO_MIN;
885	if (min_prio < 0)	932	if (min_prio < 0)
…		…
893	}	940	}
894		941
895	return 0;	942	return 0;
896	}	943	}
897		944
898	static void	945	static int
899	api_ready (SV *coro)	946	api_ready (SV *coro_sv)
900	{	947	{
901	dTHX;	948	struct coro *coro;
902		949
903	if (SvROK (coro))	950	if (SvROK (coro_sv))
904	coro = SvRV (coro);	951	coro_sv = SvRV (coro_sv);
		952
		953	coro = SvSTATE (coro_sv);
		954
		955	if (coro->flags & CF_READY)
		956	return 0;
		957
		958	#if 0 /* this is actually harmless */
		959	if (coro->flags & CF_RUNNING)
		960	croak ("Coro::ready called on currently running coroutine");
		961	#endif
		962
		963	coro->flags \|= CF_READY;
905		964
906	LOCK;	965	LOCK;
907	coro_enq (aTHX_ SvREFCNT_inc (coro));	966	coro_enq (SvREFCNT_inc (coro_sv));
908	UNLOCK;	967	UNLOCK;
909	}
910		968
		969	return 1;
		970	}
		971
911	static void	972	static int
		973	api_is_ready (SV *coro_sv)
		974	{
		975	return !!SvSTATE (coro_sv)->flags & CF_READY;
		976	}
		977
		978	static void
912	prepare_schedule (aTHX_ struct transfer_args *ta)	979	prepare_schedule (struct transfer_args *ta)
913	{	980	{
914	SV current, prev, *next;	981	SV prev, next;
915
916	LOCK;
917
918	current = GvSV (coro_current);
919		982
920	for (;;)	983	for (;;)
921	{	984	{
922	LOCK;	985	LOCK;
923
924	next = coro_deq (aTHX_ PRIO_MIN);	986	next = coro_deq (PRIO_MIN);
		987	UNLOCK;
925		988
926	if (next)	989	if (next)
927	break;	990	break;
928		991
929	UNLOCK;
930
931	{	992	{
932	dSP;	993	dSP;
933		994
934	ENTER;	995	ENTER;
935	SAVETMPS;	996	SAVETMPS;
936		997
937	PUSHMARK (SP);	998	PUSHMARK (SP);
938	PUTBACK;	999	PUTBACK;
939	call_sv (GvSV (coro_idle), G_DISCARD);	1000	call_sv (get_sv ("Coro::idle", FALSE), G_DISCARD);
940		1001
941	FREETMPS;	1002	FREETMPS;
942	LEAVE;	1003	LEAVE;
943	}	1004	}
944	}	1005	}
945		1006
946	prev = SvRV (current);	1007	prev = SvRV (coro_current);
947	SvRV (current) = next;	1008	SvRV_set (coro_current, next);
948		1009
949	/* free this only after the transfer */	1010	/* free this only after the transfer */
		1011	LOCK;
950	free_coro_mortal ();	1012	free_coro_mortal ();
		1013	UNLOCK;
951	coro_mortal = prev;	1014	coro_mortal = prev;
952		1015
		1016	assert (!SvROK(prev));//D
		1017	assert (!SvROK(next));//D
		1018
953	ta->prev = SvSTATE (prev);	1019	ta->prev = SvSTATE (prev);
954	ta->next = SvSTATE (next);	1020	ta->next = SvSTATE (next);
955	ta->flags = TRANSFER_SAVE_ALL;
956		1021
957	UNLOCK;	1022	assert (ta->next->flags & CF_READY);
		1023	ta->next->flags &= ~CF_READY;
958	}	1024	}
959		1025
960	static void	1026	static void
961	prepare_cede (aTHX_ struct transfer_args *ta)	1027	prepare_cede (struct transfer_args *ta)
962	{	1028	{
963	LOCK;	1029	api_ready (coro_current);
964	coro_enq (aTHX_ SvREFCNT_inc (SvRV (GvSV (coro_current))));
965	UNLOCK;
966		1030
967	prepare_schedule (ta);	1031	prepare_schedule (ta);
968	}	1032	}
969		1033
970	static void	1034	static void
971	api_schedule (void)	1035	api_schedule (void)
972	{	1036	{
973	dTHX;
974	struct transfer_args ta;	1037	struct transfer_args ta;
975		1038
976	prepare_schedule (&ta);	1039	prepare_schedule (&ta);
977	TRANSFER (ta);	1040	TRANSFER (ta);
978	}	1041	}
979		1042
980	static void	1043	static void
981	api_cede (void)	1044	api_cede (void)
982	{	1045	{
983	dTHX;
984	struct transfer_args ta;	1046	struct transfer_args ta;
985		1047
986	prepare_cede (&ta);	1048	prepare_cede (&ta);
987	TRANSFER (ta);	1049	TRANSFER (ta);
988	}	1050	}
…		…
998	#endif	1060	#endif
999	BOOT_PAGESIZE;	1061	BOOT_PAGESIZE;
1000		1062
1001	coro_state_stash = gv_stashpv ("Coro::State", TRUE);	1063	coro_state_stash = gv_stashpv ("Coro::State", TRUE);
1002		1064
1003	newCONSTSUB (coro_state_stash, "SAVE_DEFAV", newSViv (TRANSFER_SAVE_DEFAV));	1065	newCONSTSUB (coro_state_stash, "SAVE_DEFAV", newSViv (CORO_SAVE_DEFAV));
1004	newCONSTSUB (coro_state_stash, "SAVE_DEFSV", newSViv (TRANSFER_SAVE_DEFSV));	1066	newCONSTSUB (coro_state_stash, "SAVE_DEFSV", newSViv (CORO_SAVE_DEFSV));
1005	newCONSTSUB (coro_state_stash, "SAVE_ERRSV", newSViv (TRANSFER_SAVE_ERRSV));	1067	newCONSTSUB (coro_state_stash, "SAVE_ERRSV", newSViv (CORO_SAVE_ERRSV));
		1068	newCONSTSUB (coro_state_stash, "SAVE_IRSSV", newSViv (CORO_SAVE_IRSSV));
		1069	newCONSTSUB (coro_state_stash, "SAVE_ALL", newSViv (CORO_SAVE_ALL));
1006		1070
1007	main_mainstack = PL_mainstack;	1071	main_mainstack = PL_mainstack;
1008		1072
1009	coroapi.ver = CORO_API_VERSION;	1073	coroapi.ver = CORO_API_VERSION;
1010	coroapi.transfer = api_transfer;	1074	coroapi.transfer = api_transfer;
…		…
1020	HV *hv;	1084	HV *hv;
1021	int i;	1085	int i;
1022		1086
1023	Newz (0, coro, 1, struct coro);	1087	Newz (0, coro, 1, struct coro);
1024	coro->args = newAV ();	1088	coro->args = newAV ();
		1089	coro->save = CORO_SAVE_ALL;
		1090	coro->flags = CF_NEW;
1025		1091
1026	hv = newHV ();	1092	hv = newHV ();
1027	sv_magicext ((SV )hv, 0, PERL_MAGIC_ext, &coro_state_vtbl, (char )coro, 0)->mg_flags \|= MGf_DUP;	1093	sv_magicext ((SV )hv, 0, PERL_MAGIC_ext, &coro_state_vtbl, (char )coro, 0)->mg_flags \|= MGf_DUP;
1028	RETVAL = sv_bless (newRV_noinc ((SV *)hv), gv_stashpv (klass, 1));	1094	RETVAL = sv_bless (newRV_noinc ((SV *)hv), gv_stashpv (klass, 1));
1029		1095
1030	for (i = 1; i < items; i++)	1096	for (i = 1; i < items; i++)
1031	av_push (coro->args, newSVsv (ST (i)));	1097	av_push (coro->args, newSVsv (ST (i)));
1032
1033	/coro->mainstack = 0; //actual work is done inside transfer /
1034	/coro->stack = 0;/
1035	}	1098	}
1036	OUTPUT:	1099	OUTPUT:
		1100	RETVAL
		1101
		1102	int
		1103	save (SV *coro, int new_save = -1)
		1104	CODE:
		1105	RETVAL = api_save (coro, new_save);
		1106	OUTPUT:
1037	RETVAL	1107	RETVAL
1038		1108
1039	void	1109	void
1040	_set_stacklevel (...)	1110	_set_stacklevel (...)
1041	ALIAS:	1111	ALIAS:
1042	Coro::State::transfer = 1	1112	Coro::State::transfer = 1
1043	Coro::schedule = 2	1113	Coro::schedule = 2
1044	Coro::cede = 3	1114	Coro::cede = 3
1045	Coro::Cont::yield = 4
1046	CODE:	1115	CODE:
1047	{	1116	{
1048	struct transfer_args ta;	1117	struct transfer_args ta;
1049		1118
1050	switch (ix)	1119	switch (ix)
1051	{	1120	{
1052	case 0:	1121	case 0:
1053	ta.prev = (struct coro )INT2PTR (coro_stack , SvIV (ST (0)));	1122	ta.prev = (struct coro )INT2PTR (coro_cctx , SvIV (ST (0)));
1054	ta.next = 0;	1123	ta.next = 0;
1055	ta.flags = TRANSFER_SET_STACKLEVEL;
1056	break;	1124	break;
1057		1125
1058	case 1:	1126	case 1:
1059	if (items != 3)	1127	if (items != 2)
1060	croak ("Coro::State::transfer(prev,next,flags) expects three arguments, not %d", items);	1128	croak ("Coro::State::transfer (prev,next) expects two arguments, not %d", items);
1061		1129
1062	prepare_transfer (&ta, ST (0), ST (1), SvIV (ST (2)));	1130	prepare_transfer (&ta, ST (0), ST (1));
1063	break;	1131	break;
1064		1132
1065	case 2:	1133	case 2:
1066	prepare_schedule (&ta);	1134	prepare_schedule (&ta);
1067	break;	1135	break;
1068		1136
1069	case 3:	1137	case 3:
1070	prepare_cede (&ta);	1138	prepare_cede (&ta);
1071	break;	1139	break;
1072
1073	case 4:
1074	{
1075	SV *yieldstack;
1076	SV *sv;
1077	AV *defav = GvAV (PL_defgv);
1078
1079	yieldstack = *hv_fetch (
1080	(HV *)SvRV (GvSV (coro_current)),
1081	"yieldstack", sizeof ("yieldstack") - 1,
1082	0
1083	);
1084
1085	/* set up @_ -- ugly */
1086	av_clear (defav);
1087	av_fill (defav, items - 1);
1088	while (items--)
1089	av_store (defav, items, SvREFCNT_inc (ST(items)));
1090
1091	sv = av_pop ((AV *)SvRV (yieldstack));
1092	ta.prev = SvSTATE (av_fetch ((AV )SvRV (sv), 0, 0));
1093	ta.next = SvSTATE (av_fetch ((AV )SvRV (sv), 1, 0));
1094	ta.flags = 0;
1095	SvREFCNT_dec (sv);
1096	}
1097	break;
1098
1099	}	1140	}
1100		1141
1101	TRANSFER (ta);	1142	TRANSFER (ta);
1102	}	1143	}
1103		1144
…		…
1110	sv_unmagic (SvRV (dst), PERL_MAGIC_ext);	1151	sv_unmagic (SvRV (dst), PERL_MAGIC_ext);
1111		1152
1112	++coro_src->refcnt;	1153	++coro_src->refcnt;
1113	sv_magicext (SvRV (dst), 0, PERL_MAGIC_ext, &coro_state_vtbl, (char *)coro_src, 0)->mg_flags \|= MGf_DUP;	1154	sv_magicext (SvRV (dst), 0, PERL_MAGIC_ext, &coro_state_vtbl, (char *)coro_src, 0)->mg_flags \|= MGf_DUP;
1114	}	1155	}
1115
1116	void
1117	_nonlocal_goto (IV nextop)
1118	CODE:
1119	/* uuh, somebody will kill me again for this */
1120	PL_op->op_next = INT2PTR (OP *, nextop);
1121		1156
1122	void	1157	void
1123	_exit (code)	1158	_exit (code)
1124	int code	1159	int code
1125	PROTOTYPE: $	1160	PROTOTYPE: $
1126	CODE:	1161	CODE:
1127	_exit (code);	1162	_exit (code);
1128		1163
		1164	int
		1165	cctx_count ()
		1166	CODE:
		1167	RETVAL = cctx_count;
		1168	OUTPUT:
		1169	RETVAL
		1170
		1171	int
		1172	cctx_idle ()
		1173	CODE:
		1174	RETVAL = cctx_idle;
		1175	OUTPUT:
		1176	RETVAL
		1177
1129	MODULE = Coro::State PACKAGE = Coro	1178	MODULE = Coro::State PACKAGE = Coro
1130		1179
1131	BOOT:	1180	BOOT:
1132	{	1181	{
1133	int i;	1182	int i;
…		…
1139	newCONSTSUB (coro_stash, "PRIO_NORMAL", newSViv (PRIO_NORMAL));	1188	newCONSTSUB (coro_stash, "PRIO_NORMAL", newSViv (PRIO_NORMAL));
1140	newCONSTSUB (coro_stash, "PRIO_LOW", newSViv (PRIO_LOW));	1189	newCONSTSUB (coro_stash, "PRIO_LOW", newSViv (PRIO_LOW));
1141	newCONSTSUB (coro_stash, "PRIO_IDLE", newSViv (PRIO_IDLE));	1190	newCONSTSUB (coro_stash, "PRIO_IDLE", newSViv (PRIO_IDLE));
1142	newCONSTSUB (coro_stash, "PRIO_MIN", newSViv (PRIO_MIN));	1191	newCONSTSUB (coro_stash, "PRIO_MIN", newSViv (PRIO_MIN));
1143		1192
1144	coro_current = gv_fetchpv ("Coro::current", TRUE, SVt_PV);	1193	coro_current = get_sv ("Coro::current", FALSE);
1145	coro_idle = gv_fetchpv ("Coro::idle" , TRUE, SVt_PV);	1194	SvREADONLY_on (coro_current);
1146		1195
1147	for (i = PRIO_MAX - PRIO_MIN + 1; i--; )	1196	for (i = PRIO_MAX - PRIO_MIN + 1; i--; )
1148	coro_ready[i] = newAV ();	1197	coro_ready[i] = newAV ();
1149		1198
1150	{	1199	{
1151	SV *sv = perl_get_sv("Coro::API", 1);	1200	SV *sv = perl_get_sv("Coro::API", 1);
1152		1201
1153	coroapi.schedule = api_schedule;	1202	coroapi.schedule = api_schedule;
		1203	coroapi.save = api_save;
1154	coroapi.cede = api_cede;	1204	coroapi.cede = api_cede;
1155	coroapi.ready = api_ready;	1205	coroapi.ready = api_ready;
		1206	coroapi.is_ready = api_is_ready;
1156	coroapi.nready = &coro_nready;	1207	coroapi.nready = &coro_nready;
1157	coroapi.current = coro_current;	1208	coroapi.current = coro_current;
1158		1209
1159	GCoroAPI = &coroapi;	1210	GCoroAPI = &coroapi;
1160	sv_setiv (sv, (IV)&coroapi);	1211	sv_setiv (sv, (IV)&coroapi);
1161	SvREADONLY_on (sv);	1212	SvREADONLY_on (sv);
1162	}	1213	}
1163	}	1214	}
		1215
		1216	void
		1217	_set_current (SV *current)
		1218	PROTOTYPE: $
		1219	CODE:
		1220	SvREFCNT_dec (SvRV (coro_current));
		1221	SvRV_set (coro_current, SvREFCNT_inc (SvRV (current)));
1164		1222
1165	int	1223	int
1166	prio (Coro::State coro, int newprio = 0)	1224	prio (Coro::State coro, int newprio = 0)
1167	ALIAS:	1225	ALIAS:
1168	nice = 1	1226	nice = 1
…		…
1180		1238
1181	coro->prio = newprio;	1239	coro->prio = newprio;
1182	}	1240	}
1183	}	1241	}
1184		1242
1185	void	1243	SV *
1186	ready (SV *self)	1244	ready (SV *self)
1187	PROTOTYPE: $	1245	PROTOTYPE: $
1188	CODE:	1246	CODE:
1189	api_ready (self);	1247	RETVAL = boolSV (api_ready (self));
		1248	OUTPUT:
		1249	RETVAL
		1250
		1251	SV *
		1252	is_ready (SV *self)
		1253	PROTOTYPE: $
		1254	CODE:
		1255	RETVAL = boolSV (api_is_ready (self));
		1256	OUTPUT:
		1257	RETVAL
1190		1258
1191	int	1259	int
1192	nready (...)	1260	nready (...)
1193	PROTOTYPE:	1261	PROTOTYPE:
1194	CODE:	1262	CODE:
…		…
1200		1268
1201	SV *	1269	SV *
1202	_get_state ()	1270	_get_state ()
1203	CODE:	1271	CODE:
1204	{	1272	{
1205	struct {	1273	struct io_state *data;
1206	int errorno;
1207	int laststype;
1208	int laststatval;
1209	Stat_t statcache;
1210	} data;
1211		1274
		1275	RETVAL = newSV (sizeof (struct io_state));
		1276	data = (struct io_state *)SvPVX (RETVAL);
		1277	SvCUR_set (RETVAL, sizeof (struct io_state));
		1278	SvPOK_only (RETVAL);
		1279
1212	data.errorno = errno;	1280	data->errorno = errno;
1213	data.laststype = PL_laststype;	1281	data->laststype = PL_laststype;
1214	data.laststatval = PL_laststatval;	1282	data->laststatval = PL_laststatval;
1215	data.statcache = PL_statcache;	1283	data->statcache = PL_statcache;
1216
1217	RETVAL = newSVpvn ((char *)&data, sizeof data);
1218	}	1284	}
1219	OUTPUT:	1285	OUTPUT:
1220	RETVAL	1286	RETVAL
1221		1287
1222	void	1288	void
1223	_set_state (char *data_)	1289	_set_state (char *data_)
1224	PROTOTYPE: $	1290	PROTOTYPE: $
1225	CODE:	1291	CODE:
1226	{	1292	{
1227	struct {	1293	struct io_state data = (void )data_;
1228	int errorno;
1229	int laststype;
1230	int laststatval;
1231	Stat_t statcache;
1232	} data = (void )data_;
1233		1294
1234	errno = data->errorno;	1295	errno = data->errorno;
1235	PL_laststype = data->laststype;	1296	PL_laststype = data->laststype;
1236	PL_laststatval = data->laststatval;	1297	PL_laststatval = data->laststatval;
1237	PL_statcache = data->statcache;	1298	PL_statcache = data->statcache;
1238	}	1299	}
		1300

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Comparing Coro/Coro/State.xs (file contents): Revision 1.96 by root, Sun Nov 26 18:25:11 2006 UTC vs. Revision 1.126 by root, Tue Dec 12 04:19:56 2006 UTC

Diff Legend

Comparing Coro/Coro/State.xs (file contents):
Revision 1.96 by root, Sun Nov 26 18:25:11 2006 UTC vs.
Revision 1.126 by root, Tue Dec 12 04:19:56 2006 UTC