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

Comparing Coro/Coro/State.xs (file contents):
Revision 1.97 by root, Sun Nov 26 21:21:14 2006 UTC vs.
Revision 1.130 by root, Mon Dec 25 13:25:55 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	#include <stdio.h>
		10	#include <errno.h>
		11	#include <assert.h>
		12
		13	#ifdef HAVE_MMAP
		14	# include <unistd.h>
		15	# include <sys/mman.h>
		16	# ifndef MAP_ANONYMOUS
		17	# ifdef MAP_ANON
		18	# define MAP_ANONYMOUS MAP_ANON
		19	# else
		20	# undef HAVE_MMAP
		21	# endif
		22	# endif
		23	# include <limits.h>
		24	# ifndef PAGESIZE
		25	# define PAGESIZE pagesize
		26	# define BOOT_PAGESIZE pagesize = sysconf (_SC_PAGESIZE)
		27	static long pagesize;
		28	# else
		29	# define BOOT_PAGESIZE (void)0
		30	# endif
		31	#else
		32	# define PAGESIZE 0
		33	# define BOOT_PAGESIZE (void)0
		34	#endif
		35
		36	#if USE_VALGRIND
		37	# include <valgrind/valgrind.h>
		38	#endif
		39
		40	/* the maximum number of idle cctx that will be pooled */
		41	#define MAX_IDLE_CCTX 8
		42
		43	#define PERL_VERSION_ATLEAST(a,b,c) \
		44	(PERL_REVISION > (a) \
		45	\|\| (PERL_REVISION == (a) \
		46	&& (PERL_VERSION > (b) \
		47	\|\| (PERL_VERSION == (b) && PERLSUBVERSION >= (c)))))
		48
		49	#if !PERL_VERSION_ATLEAST (5,6,0)
12	# ifndef PL_ppaddr	50	# ifndef PL_ppaddr
13	# define PL_ppaddr ppaddr	51	# define PL_ppaddr ppaddr
14	# endif	52	# endif
15	# ifndef call_sv	53	# ifndef call_sv
16	# define call_sv perl_call_sv	54	# define call_sv perl_call_sv
27	# ifndef IS_PADCONST	65	# ifndef IS_PADCONST
28	# define IS_PADCONST(v) 0	66	# define IS_PADCONST(v) 0
29	# endif	67	# endif
30	#endif	68	#endif
31		69
32	#include <stdio.h>	70	/* 5.8.7 */
33	#include <errno.h>	71	#ifndef SvRV_set
		72	# define SvRV_set(s,v) SvRV(s) = (v)
		73	#endif
34		74
35	#if !__i386 && !__x86_64 && !__powerpc && !__m68k && !__alpha && !__mips && !__sparc64	75	#if !__i386 && !__x86_64 && !__powerpc && !__m68k && !__alpha && !__mips && !__sparc64
36	# undef STACKGUARD	76	# undef STACKGUARD
37	#endif	77	#endif
38		78
39	#ifndef STACKGUARD	79	#ifndef STACKGUARD
40	# define STACKGUARD 0	80	# define STACKGUARD 0
41	#endif	81	#endif
42		82
43	#ifdef HAVE_MMAP	83	/* prefer perl internal functions over our own? */
44	# include <unistd.h>	84	#ifndef PREFER_PERL_FUNCTIONS
45	# include <sys/mman.h>	85	# define PREFER_PERL_FUNCTIONS 0
46	# ifndef MAP_ANONYMOUS
47	# ifdef MAP_ANON
48	# define MAP_ANONYMOUS MAP_ANON
49	# else
50	# undef HAVE_MMAP
51	# 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
60	# endif
61	#endif	86	#endif
62		87
63	/* The next macro should declare a variable stacklevel that contains and approximation	88	/* 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	89	* to the current C stack pointer. Its property is that it changes with each call
65	* and should be unique. */	90	* and should be unique. */
66	#define dSTACKLEVEL int stacklevel	91	#define dSTACKLEVEL int stacklevel
67	#define STACKLEVEL ((void *)&stacklevel)	92	#define STACKLEVEL ((void *)&stacklevel)
68		93
69	#define IN_DESTRUCT (PL_main_cv == Nullcv)	94	#define IN_DESTRUCT (PL_main_cv == Nullcv)
70		95
		96	#if __GNUC__ >= 3
		97	# define attribute(x) __attribute__(x)
		98	#else
		99	# define attribute(x)
		100	#endif
		101
		102	#define NOINLINE attribute ((noinline))
		103
71	#include "CoroAPI.h"	104	#include "CoroAPI.h"
72
73	#define TRANSFER_SET_STACKLEVEL 0x8bfbfbfb /* magic cookie */
74		105
75	#ifdef USE_ITHREADS	106	#ifdef USE_ITHREADS
76	static perl_mutex coro_mutex;	107	static perl_mutex coro_mutex;
77	# define LOCK do { MUTEX_LOCK (&coro_mutex); } while (0)	108	# define LOCK do { MUTEX_LOCK (&coro_mutex); } while (0)
78	# define UNLOCK do { MUTEX_UNLOCK (&coro_mutex); } while (0)	109	# define UNLOCK do { MUTEX_UNLOCK (&coro_mutex); } while (0)
79	#else	110	#else
80	# define LOCK (void)0	111	# define LOCK (void)0
81	# define UNLOCK (void)0	112	# define UNLOCK (void)0
82	#endif	113	#endif
83		114
		115	struct io_state
		116	{
		117	int errorno;
		118	I32 laststype;
		119	int laststatval;
		120	Stat_t statcache;
		121	};
		122
84	static struct CoroAPI coroapi;	123	static struct CoroAPI coroapi;
85	static AV main_mainstack; / used to differentiate between $main and others */	124	static AV main_mainstack; / used to differentiate between $main and others */
86	static HV coro_state_stash, coro_stash;	125	static HV coro_state_stash, coro_stash;
87	static SV coro_mortal; / will be freed after next transfer */	126	static SV coro_mortal; / will be freed after next transfer */
88		127
		128	static struct coro_cctx *cctx_first;
		129	static int cctx_count, cctx_idle;
		130
89	/* this is a structure representing a c-level coroutine */	131	/* this is a structure representing a c-level coroutine */
90	typedef struct coro_stack {	132	typedef struct coro_cctx {
91	struct coro_stack *next;	133	struct coro_cctx *next;
92		134
93	/* the stack */	135	/* the stack */
94	void *sptr;	136	void *sptr;
95	long ssize; /* positive == mmap, otherwise malloc */	137	long ssize; /* positive == mmap, otherwise malloc */
96		138
97	/* cpu state */	139	/* cpu state */
98	void idle_sp; / sp of top-level transfer/schedule/cede call */	140	void idle_sp; / sp of top-level transfer/schedule/cede call */
99	JMPENV *top_env;	141	JMPENV *top_env;
100	coro_context cctx;	142	coro_context cctx;
101	} coro_stack;	143
		144	int inuse;
		145
		146	#if USE_VALGRIND
		147	int valgrind_id;
		148	#endif
		149	} coro_cctx;
		150
		151	enum {
		152	CF_RUNNING = 0x0001, /* coroutine is running */
		153	CF_READY = 0x0002, /* coroutine is ready */
		154	CF_NEW = 0x0004, /* ahs never been switched to */
		155	};
102		156
103	/* this is a structure representing a perl-level coroutine */	157	/* this is a structure representing a perl-level coroutine */
104	struct coro {	158	struct coro {
105	/* the c coroutine allocated to this perl coroutine, if any */	159	/* the c coroutine allocated to this perl coroutine, if any */
106	coro_stack *stack;	160	coro_cctx *cctx;
107		161
108	/* data associated with this coroutine (initial args) */	162	/* data associated with this coroutine (initial args) */
109	AV *args;	163	AV *args;
110	int refcnt;	164	int refcnt;
		165	int save; /* CORO_SAVE flags */
		166	int flags; /* CF_ flags */
111		167
112	/* optionally saved, might be zero */	168	/* optionally saved, might be zero */
113	AV *defav;	169	AV defav; / @_ */
114	SV *defsv;	170	SV defsv; / $_ */
115	SV *errsv;	171	SV errsv; / $@ */
		172	SV irssv; / $/ */
		173	SV irssv_sv; / real $/ cache */
116		174
117	/* saved global state not related to stacks */	175	#define VAR(name,type) type name;
118	U8 dowarn;	176	# include "state.h"
119	I32 in_eval;	177	#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		178
151	/* coro process data */	179	/* coro process data */
152	int prio;	180	int prio;
153	};	181	};
154		182
155	typedef struct coro *Coro__State;	183	typedef struct coro *Coro__State;
156	typedef struct coro *Coro__State_or_hashref;	184	typedef struct coro *Coro__State_or_hashref;
157		185
158	static AV *	186	static AV *
159	coro_clone_padlist (pTHX_ CV *cv)	187	coro_clone_padlist (CV *cv)
160	{	188	{
161	AV *padlist = CvPADLIST (cv);	189	AV *padlist = CvPADLIST (cv);
162	AV newpadlist, newpad;	190	AV newpadlist, newpad;
163		191
164	newpadlist = newAV ();	192	newpadlist = newAV ();
165	AvREAL_off (newpadlist);	193	AvREAL_off (newpadlist);
166	#if PERL_VERSION < 9	194	#if PERL_VERSION_ATLEAST (5,9,0)
		195	Perl_pad_push (aTHX_ padlist, AvFILLp (padlist) + 1);
		196	#else
167	Perl_pad_push (aTHX_ padlist, AvFILLp (padlist) + 1, 1);	197	Perl_pad_push (aTHX_ padlist, AvFILLp (padlist) + 1, 1);
168	#else
169	Perl_pad_push (aTHX_ padlist, AvFILLp (padlist) + 1);
170	#endif	198	#endif
171	newpad = (AV *)AvARRAY (padlist)[AvFILLp (padlist)];	199	newpad = (AV *)AvARRAY (padlist)[AvFILLp (padlist)];
172	--AvFILLp (padlist);	200	--AvFILLp (padlist);
173		201
174	av_store (newpadlist, 0, SvREFCNT_inc (*av_fetch (padlist, 0, FALSE)));	202	av_store (newpadlist, 0, SvREFCNT_inc (*av_fetch (padlist, 0, FALSE)));
…		…
176		204
177	return newpadlist;	205	return newpadlist;
178	}	206	}
179		207
180	static void	208	static void
181	free_padlist (pTHX_ AV *padlist)	209	free_padlist (AV *padlist)
182	{	210	{
183	/* may be during global destruction */	211	/* may be during global destruction */
184	if (SvREFCNT (padlist))	212	if (SvREFCNT (padlist))
185	{	213	{
186	I32 i = AvFILLp (padlist);	214	I32 i = AvFILLp (padlist);
…		…
207	AV *padlist;	235	AV *padlist;
208	AV av = (AV )mg->mg_obj;	236	AV av = (AV )mg->mg_obj;
209		237
210	/* casting is fun. */	238	/* casting is fun. */
211	while (&PL_sv_undef != (SV )(padlist = (AV )av_pop (av)))	239	while (&PL_sv_undef != (SV )(padlist = (AV )av_pop (av)))
212	free_padlist (aTHX_ padlist);	240	free_padlist (padlist);
213		241
214	SvREFCNT_dec (av);	242	SvREFCNT_dec (av);
215		243
216	return 0;	244	return 0;
217	}	245	}
218		246
219	#define PERL_MAGIC_coro PERL_MAGIC_ext	247	#define PERL_MAGIC_coro PERL_MAGIC_ext
220		248
221	static MGVTBL vtbl_coro = {0, 0, 0, 0, coro_cv_free};	249	static MGVTBL vtbl_coro = {0, 0, 0, 0, coro_cv_free};
222		250
		251	#define CORO_MAGIC(cv) \
		252	SvMAGIC (cv) \
		253	? SvMAGIC (cv)->mg_type == PERL_MAGIC_coro \
		254	? SvMAGIC (cv) \
		255	: mg_find ((SV *)cv, PERL_MAGIC_coro) \
		256	: 0
		257
223	/* the next two functions merely cache the padlists */	258	/* the next two functions merely cache the padlists */
224	static void	259	static void
225	get_padlist (pTHX_ CV *cv)	260	get_padlist (CV *cv)
226	{	261	{
227	MAGIC mg = mg_find ((SV )cv, PERL_MAGIC_coro);	262	MAGIC *mg = CORO_MAGIC (cv);
		263	AV *av;
228		264
229	if (mg && AvFILLp ((AV *)mg->mg_obj) >= 0)	265	if (mg && AvFILLp ((av = (AV *)mg->mg_obj)) >= 0)
230	CvPADLIST (cv) = (AV )av_pop ((AV )mg->mg_obj);	266	CvPADLIST (cv) = (AV *)AvARRAY (av)[AvFILLp (av)--];
231	else	267	else
232	{	268	{
233	#if 0	269	#if PREFER_PERL_FUNCTIONS
234	/* this is probably cleaner, but also slower? */	270	/* this is probably cleaner, but also slower? */
235	CV *cp = Perl_cv_clone (aTHX_ cv);	271	CV *cp = Perl_cv_clone (cv);
236	CvPADLIST (cv) = CvPADLIST (cp);	272	CvPADLIST (cv) = CvPADLIST (cp);
237	CvPADLIST (cp) = 0;	273	CvPADLIST (cp) = 0;
238	SvREFCNT_dec (cp);	274	SvREFCNT_dec (cp);
239	#else	275	#else
240	CvPADLIST (cv) = coro_clone_padlist (aTHX_ cv);	276	CvPADLIST (cv) = coro_clone_padlist (cv);
241	#endif	277	#endif
242	}	278	}
243	}	279	}
244		280
245	static void	281	static void
246	put_padlist (pTHX_ CV *cv)	282	put_padlist (CV *cv)
247	{	283	{
248	MAGIC mg = mg_find ((SV )cv, PERL_MAGIC_coro);	284	MAGIC *mg = CORO_MAGIC (cv);
		285	AV *av;
249		286
250	if (!mg)	287	if (!mg)
251	{	288	{
252	sv_magic ((SV *)cv, 0, PERL_MAGIC_coro, 0, 0);	289	sv_magic ((SV *)cv, 0, PERL_MAGIC_coro, 0, 0);
253	mg = mg_find ((SV *)cv, PERL_MAGIC_coro);	290	mg = mg_find ((SV *)cv, PERL_MAGIC_coro);
254	mg->mg_virtual = &vtbl_coro;	291	mg->mg_virtual = &vtbl_coro;
255	mg->mg_obj = (SV *)newAV ();	292	mg->mg_obj = (SV *)newAV ();
256	}	293	}
257		294
258	av_push ((AV )mg->mg_obj, (SV )CvPADLIST (cv));	295	av = (AV *)mg->mg_obj;
		296
		297	if (AvFILLp (av) >= AvMAX (av))
		298	av_extend (av, AvMAX (av) + 1);
		299
		300	AvARRAY (av)[++AvFILLp (av)] = (SV *)CvPADLIST (cv);
259	}	301	}
260		302
261	#define SB do {	303	#define SB do {
262	#define SE } while (0)	304	#define SE } while (0)
263		305
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	306	#define REPLACE_SV(sv,val) SB SvREFCNT_dec (sv); (sv) = (val); (val) = 0; SE
268		307
269	static void	308	static void
270	load_state(pTHX_ Coro__State c)	309	load_perl (Coro__State c)
271	{	310	{
272	PL_dowarn = c->dowarn;	311	#define VAR(name,type) PL_ ## name = c->name;
273	PL_in_eval = c->in_eval;	312	# include "state.h"
274		313	#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		314
306	if (c->defav) REPLACE_SV (GvAV (PL_defgv), c->defav);	315	if (c->defav) REPLACE_SV (GvAV (PL_defgv), c->defav);
307	if (c->defsv) REPLACE_SV (DEFSV , c->defsv);	316	if (c->defsv) REPLACE_SV (DEFSV , c->defsv);
308	if (c->errsv) REPLACE_SV (ERRSV , c->errsv);	317	if (c->errsv) REPLACE_SV (ERRSV , c->errsv);
		318	if (c->irssv)
		319	{
		320	if (c->irssv == PL_rs \|\| sv_eq (PL_rs, c->irssv))
		321	SvREFCNT_dec (c->irssv);
		322	else
		323	{
		324	REPLACE_SV (PL_rs, c->irssv);
		325	if (!c->irssv_sv) c->irssv_sv = get_sv ("/", 0);
		326	sv_setsv (c->irssv_sv, PL_rs);
		327	}
		328	}
309		329
310	{	330	{
311	dSP;	331	dSP;
312	CV *cv;	332	CV *cv;
313		333
314	/* now do the ugly restore mess */	334	/* now do the ugly restore mess */
315	while ((cv = (CV *)POPs))	335	while ((cv = (CV *)POPs))
316	{	336	{
317	AV padlist = (AV )POPs;
318
319	if (padlist)
320	{
321	put_padlist (aTHX_ cv); /* mark this padlist as available */	337	put_padlist (cv); /* mark this padlist as available */
322	CvPADLIST(cv) = padlist;	338	CvDEPTH (cv) = PTR2IV (POPs);
323	}	339	CvPADLIST (cv) = (AV *)POPs;
324
325	++CvDEPTH(cv);
326	}	340	}
327		341
328	PUTBACK;	342	PUTBACK;
329	}	343	}
330	}	344	}
331		345
332	static void	346	static void
333	save_state(pTHX_ Coro__State c, int flags)	347	save_perl (Coro__State c)
334	{	348	{
335	{	349	{
336	dSP;	350	dSP;
337	I32 cxix = cxstack_ix;	351	I32 cxix = cxstack_ix;
338	PERL_CONTEXT *ccstk = cxstack;	352	PERL_CONTEXT *ccstk = cxstack;
…		…
341	/*	355	/*
342	* the worst thing you can imagine happens first - we have to save	356	* the worst thing you can imagine happens first - we have to save
343	* (and reinitialize) all cv's in the whole callchain :(	357	* (and reinitialize) all cv's in the whole callchain :(
344	*/	358	*/
345		359
		360	EXTEND (SP, 3 + 1);
346	PUSHs (Nullsv);	361	PUSHs (Nullsv);
347	/* this loop was inspired by pp_caller */	362	/* this loop was inspired by pp_caller */
348	for (;;)	363	for (;;)
349	{	364	{
350	while (cxix >= 0)	365	while (cxix >= 0)
351	{	366	{
352	PERL_CONTEXT *cx = &ccstk[cxix--];	367	PERL_CONTEXT *cx = &ccstk[cxix--];
353		368
354	if (CxTYPE(cx) == CXt_SUB)	369	if (CxTYPE (cx) == CXt_SUB)
355	{	370	{
356	CV *cv = cx->blk_sub.cv;	371	CV *cv = cx->blk_sub.cv;
		372
357	if (CvDEPTH(cv))	373	if (CvDEPTH (cv))
358	{	374	{
359	EXTEND (SP, CvDEPTH(cv)*2);	375	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));	376	PUSHs ((SV *)CvPADLIST (cv));
		377	PUSHs (INT2PTR (SV *, CvDEPTH (cv)));
369	PUSHs ((SV *)cv);	378	PUSHs ((SV *)cv);
370		379
		380	CvDEPTH (cv) = 0;
371	get_padlist (aTHX_ cv);	381	get_padlist (cv);
372	}	382	}
373	}	383	}
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	}	384	}
383		385
384	if (top_si->si_type == PERLSI_MAIN)	386	if (top_si->si_type == PERLSI_MAIN)
385	break;	387	break;
386		388
…		…
390	}	392	}
391		393
392	PUTBACK;	394	PUTBACK;
393	}	395	}
394		396
395	c->defav = flags & TRANSFER_SAVE_DEFAV ? (AV *)SvREFCNT_inc (GvAV (PL_defgv)) : 0;	397	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;	398	c->defsv = c->save & CORO_SAVE_DEFSV ? SvREFCNT_inc (DEFSV) : 0;
397	c->errsv = flags & TRANSFER_SAVE_ERRSV ? SvREFCNT_inc (ERRSV) : 0;	399	c->errsv = c->save & CORO_SAVE_ERRSV ? SvREFCNT_inc (ERRSV) : 0;
		400	c->irssv = c->save & CORO_SAVE_IRSSV ? SvREFCNT_inc (PL_rs) : 0;
398		401
399	c->dowarn = PL_dowarn;	402	#define VAR(name,type)c->name = PL_ ## name;
400	c->in_eval = PL_in_eval;	403	# include "state.h"
401		404	#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	}	405	}
433		406
434	/*	407	/*
435	* allocate various perl stacks. This is an exact copy	408	* allocate various perl stacks. This is an exact copy
436	* of perl.c:init_stacks, except that it uses less memory	409	* of perl.c:init_stacks, except that it uses less memory
437	* on the (sometimes correct) assumption that coroutines do	410	* on the (sometimes correct) assumption that coroutines do
438	* not usually need a lot of stackspace.	411	* not usually need a lot of stackspace.
439	*/	412	*/
		413	#if PREFER_PERL_FUNCTIONS
		414	# define coro_init_stacks init_stacks
		415	#else
440	static void	416	static void
441	coro_init_stacks (pTHX)	417	coro_init_stacks ()
442	{	418	{
443	LOCK;
444
445	PL_curstackinfo = new_stackinfo(96, 1024/sizeof(PERL_CONTEXT) - 1);	419	PL_curstackinfo = new_stackinfo(128, 1024/sizeof(PERL_CONTEXT));
446	PL_curstackinfo->si_type = PERLSI_MAIN;	420	PL_curstackinfo->si_type = PERLSI_MAIN;
447	PL_curstack = PL_curstackinfo->si_stack;	421	PL_curstack = PL_curstackinfo->si_stack;
448	PL_mainstack = PL_curstack; /* remember in case we switch stacks */	422	PL_mainstack = PL_curstack; /* remember in case we switch stacks */
449		423
450	PL_stack_base = AvARRAY(PL_curstack);	424	PL_stack_base = AvARRAY(PL_curstack);
451	PL_stack_sp = PL_stack_base;	425	PL_stack_sp = PL_stack_base;
452	PL_stack_max = PL_stack_base + AvMAX(PL_curstack);	426	PL_stack_max = PL_stack_base + AvMAX(PL_curstack);
453		427
454	New(50,PL_tmps_stack,96,SV*);	428	New(50,PL_tmps_stack,128,SV*);
455	PL_tmps_floor = -1;	429	PL_tmps_floor = -1;
456	PL_tmps_ix = -1;	430	PL_tmps_ix = -1;
457	PL_tmps_max = 96;	431	PL_tmps_max = 128;
458		432
459	New(54,PL_markstack,16,I32);	433	New(54,PL_markstack,32,I32);
460	PL_markstack_ptr = PL_markstack;	434	PL_markstack_ptr = PL_markstack;
461	PL_markstack_max = PL_markstack + 16;	435	PL_markstack_max = PL_markstack + 32;
462		436
463	#ifdef SET_MARK_OFFSET	437	#ifdef SET_MARK_OFFSET
464	SET_MARK_OFFSET;	438	SET_MARK_OFFSET;
465	#endif	439	#endif
466		440
467	New(54,PL_scopestack,16,I32);	441	New(54,PL_scopestack,32,I32);
468	PL_scopestack_ix = 0;	442	PL_scopestack_ix = 0;
469	PL_scopestack_max = 16;	443	PL_scopestack_max = 32;
470		444
471	New(54,PL_savestack,96,ANY);	445	New(54,PL_savestack,64,ANY);
472	PL_savestack_ix = 0;	446	PL_savestack_ix = 0;
473	PL_savestack_max = 96;	447	PL_savestack_max = 64;
474		448
475	#if PERL_VERSION < 9	449	#if !PERL_VERSION_ATLEAST (5,9,0)
476	New(54,PL_retstack,8,OP*);	450	New(54,PL_retstack,16,OP*);
477	PL_retstack_ix = 0;	451	PL_retstack_ix = 0;
478	PL_retstack_max = 8;	452	PL_retstack_max = 16;
479	#endif	453	#endif
480
481	UNLOCK;
482	}	454	}
		455	#endif
483		456
484	/*	457	/*
485	* destroy the stacks, the callchain etc...	458	* destroy the stacks, the callchain etc...
486	*/	459	*/
487	static void	460	static void
488	destroy_stacks(pTHX)	461	coro_destroy_stacks ()
489	{	462	{
490	if (!IN_DESTRUCT)	463	if (!IN_DESTRUCT)
491	{	464	{
492	/* is this ugly, I ask? */	465	/* restore all saved variables and stuff */
493	LEAVE_SCOPE (0);	466	LEAVE_SCOPE (0);
		467	assert (PL_tmps_floor == -1);
494		468
495	/* sure it is, but more important: is it correct?? :/ */	469	/* free all temporaries */
496	FREETMPS;	470	FREETMPS;
		471	assert (PL_tmps_ix == -1);
497		472
498	/POPSTACK_TO (PL_mainstack);//D//use/	473	POPSTACK_TO (PL_mainstack);
499	}	474	}
500		475
501	while (PL_curstackinfo->si_next)	476	while (PL_curstackinfo->si_next)
502	PL_curstackinfo = PL_curstackinfo->si_next;	477	PL_curstackinfo = PL_curstackinfo->si_next;
503		478
504	while (PL_curstackinfo)	479	while (PL_curstackinfo)
505	{	480	{
506	PERL_SI *p = PL_curstackinfo->si_prev;	481	PERL_SI *p = PL_curstackinfo->si_prev;
507		482
508	{ /D//remove/
509	dSP;
510	SWITCHSTACK (PL_curstack, PL_curstackinfo->si_stack);
511	PUTBACK; /* possibly superfluous */
512	}
513
514	if (!IN_DESTRUCT)	483	if (!IN_DESTRUCT)
515	{
516	dounwind (-1);/D//remove/
517	SvREFCNT_dec (PL_curstackinfo->si_stack);	484	SvREFCNT_dec (PL_curstackinfo->si_stack);
518	}
519		485
520	Safefree (PL_curstackinfo->si_cxstack);	486	Safefree (PL_curstackinfo->si_cxstack);
521	Safefree (PL_curstackinfo);	487	Safefree (PL_curstackinfo);
522	PL_curstackinfo = p;	488	PL_curstackinfo = p;
523	}	489	}
524		490
525	Safefree (PL_tmps_stack);	491	Safefree (PL_tmps_stack);
526	Safefree (PL_markstack);	492	Safefree (PL_markstack);
527	Safefree (PL_scopestack);	493	Safefree (PL_scopestack);
528	Safefree (PL_savestack);	494	Safefree (PL_savestack);
529	#if PERL_VERSION < 9	495	#if !PERL_VERSION_ATLEAST (5,9,0)
530	Safefree (PL_retstack);	496	Safefree (PL_retstack);
531	#endif	497	#endif
532	}	498	}
533		499
534	static void	500	static void
535	setup_coro (struct coro *coro)	501	setup_coro (struct coro *coro)
536	{	502	{
537	/*	503	/*
538	* emulate part of the perl startup here.	504	* emulate part of the perl startup here.
539	*/	505	*/
540	dTHX;
541	dSP;
542	UNOP myop;
543	SV sub_init = (SV )get_cv ("Coro::State::coro_init", FALSE);
544		506
545	coro_init_stacks (aTHX);	507	coro_init_stacks ();
546	/PL_curcop = 0;/	508
547	/PL_in_eval = PL_in_eval;/ /* inherit */	509	PL_curcop = &PL_compiling;
		510	PL_in_eval = EVAL_NULL;
		511	PL_curpm = 0;
		512	PL_localizing = 0;
		513	PL_dirty = 0;
		514	PL_restartop = 0;
		515
		516	{
		517	dSP;
		518	LOGOP myop;
		519
548	SvREFCNT_dec (GvAV (PL_defgv));	520	SvREFCNT_dec (GvAV (PL_defgv));
549	GvAV (PL_defgv) = coro->args; coro->args = 0;	521	GvAV (PL_defgv) = coro->args; coro->args = 0;
550		522
551	SPAGAIN;
552
553	Zero (&myop, 1, UNOP);	523	Zero (&myop, 1, LOGOP);
554	myop.op_next = Nullop;	524	myop.op_next = Nullop;
555	myop.op_flags = OPf_WANT_VOID;	525	myop.op_flags = OPf_WANT_VOID;
556		526
		527	PUSHMARK (SP);
		528	XPUSHs ((SV *)get_cv ("Coro::State::_coro_init", FALSE));
		529	PUTBACK;
557	PL_op = (OP *)&myop;	530	PL_op = (OP *)&myop;
558
559	PUSHMARK(SP);
560	XPUSHs (sub_init);
561	PUTBACK;
562	PL_op = PL_ppaddr[OP_ENTERSUB](aTHX);	531	PL_op = PL_ppaddr[OP_ENTERSUB](aTHX);
563	SPAGAIN;	532	SPAGAIN;
		533	}
564		534
565	ENTER; /* necessary e.g. for dounwind */	535	ENTER; /* necessary e.g. for dounwind */
566	}	536	}
567		537
568	static void	538	static void
569	free_coro_mortal ()	539	free_coro_mortal ()
570	{	540	{
571	if (coro_mortal)	541	if (coro_mortal)
572	{	542	{
573	dTHX;
574
575	SvREFCNT_dec (coro_mortal);	543	SvREFCNT_dec (coro_mortal);
576	coro_mortal = 0;	544	coro_mortal = 0;
577	}	545	}
578	}	546	}
579		547
		548	/* inject a fake call to Coro::State::_cctx_init into the execution */
		549	static void NOINLINE
		550	prepare_cctx (coro_cctx *cctx)
		551	{
		552	dSP;
		553	LOGOP myop;
		554
		555	Zero (&myop, 1, LOGOP);
		556	myop.op_next = PL_op;
		557	myop.op_flags = OPf_WANT_VOID \| OPf_STACKED;
		558
		559	PUSHMARK (SP);
		560	EXTEND (SP, 2);
		561	PUSHs (sv_2mortal (newSViv (PTR2IV (cctx))));
		562	PUSHs ((SV *)get_cv ("Coro::State::_cctx_init", FALSE));
		563	PUTBACK;
		564	PL_op = (OP *)&myop;
		565	PL_op = PL_ppaddr[OP_ENTERSUB](aTHX);
		566	SPAGAIN;
		567	}
		568
580	static void	569	static void
581	coro_run (void *arg)	570	coro_run (void *arg)
582	{	571	{
		572	/* coro_run is the alternative tail of transfer(), so unlock here. */
		573	UNLOCK;
		574
583	/*	575	/*
584	* this is a _very_ stripped down perl interpreter ;)	576	* this is a _very_ stripped down perl interpreter ;)
585	*/	577	*/
586	dTHX;
587	int ret;
588
589	UNLOCK;
590
591	PL_top_env = &PL_start_env;	578	PL_top_env = &PL_start_env;
592		579
593	sv_setiv (get_sv ("Coro::State::cctx_stack", FALSE), PTR2IV ((coro_stack *)arg));	580	/* inject call to cctx_init */
594	sv_setiv (get_sv ("Coro::State::cctx_restartop", FALSE), PTR2IV (PL_op));	581	prepare_cctx ((coro_cctx *)arg);
595
596	/* continue at cctx_init, without entersub */
597	PL_restartop = CvSTART (get_cv ("Coro::State::cctx_init", FALSE));
598		582
599	/* somebody will hit me for both perl_run and PL_restartop */	583	/* somebody will hit me for both perl_run and PL_restartop */
600	ret = perl_run (aTHX_ PERL_GET_CONTEXT);	584	PL_restartop = PL_op;
601	printf ("ret %d\n", ret);//D	585	perl_run (PL_curinterp);
602		586
603	fputs ("FATAL: C coroutine fell over the edge of the world, aborting.\n", stderr);	587	fputs ("FATAL: C coroutine fell over the edge of the world, aborting. Did you call exit in a coroutine?\n", stderr);
604	abort ();	588	abort ();
605	}	589	}
606		590
607	static coro_stack *	591	static coro_cctx *
608	stack_new ()	592	cctx_new ()
609	{	593	{
610	coro_stack *stack;	594	coro_cctx *cctx;
611		595
		596	++cctx_count;
		597
612	New (0, stack, 1, coro_stack);	598	Newz (0, cctx, 1, coro_cctx);
613		599
614	#if HAVE_MMAP	600	#if HAVE_MMAP
615		601
616	stack->ssize = ((STACKSIZE * sizeof (long) + PAGESIZE - 1) / PAGESIZE + STACKGUARD) * PAGESIZE;	602	cctx->ssize = ((STACKSIZE * sizeof (long) + PAGESIZE - 1) / PAGESIZE + STACKGUARD) * PAGESIZE;
617	/* mmap suppsedly does allocate-on-write for us */	603	/* mmap supposedly does allocate-on-write for us */
618	stack->sptr = mmap (0, stack->ssize, PROT_EXEC\|PROT_READ\|PROT_WRITE, MAP_PRIVATE\|MAP_ANONYMOUS, 0, 0);	604	cctx->sptr = mmap (0, cctx->ssize, PROT_EXEC\|PROT_READ\|PROT_WRITE, MAP_PRIVATE\|MAP_ANONYMOUS, 0, 0);
619		605
620	if (stack->sptr == (void *)-1)	606	if (cctx->sptr == (void *)-1)
621	{	607	{
622	perror ("FATAL: unable to mmap stack for coroutine");	608	perror ("FATAL: unable to mmap stack for coroutine");
623	_exit (EXIT_FAILURE);	609	_exit (EXIT_FAILURE);
624	}	610	}
625		611
626	# if STACKGUARD	612	# if STACKGUARD
627	mprotect (stack->sptr, STACKGUARD * PAGESIZE, PROT_NONE);	613	mprotect (cctx->sptr, STACKGUARD * PAGESIZE, PROT_NONE);
628	# endif	614	# endif
629		615
630	#else	616	#else
631		617
632	stack->ssize = STACKSIZE * (long)sizeof (long);	618	cctx->ssize = STACKSIZE * (long)sizeof (long);
633	New (0, stack->sptr, STACKSIZE, long);	619	New (0, cctx->sptr, STACKSIZE, long);
634		620
635	if (!stack->sptr)	621	if (!cctx->sptr)
636	{	622	{
637	perror (stderr, "FATAL: unable to malloc stack for coroutine");	623	perror ("FATAL: unable to malloc stack for coroutine");
638	_exit (EXIT_FAILURE);	624	_exit (EXIT_FAILURE);
639	}	625	}
640		626
641	#endif	627	#endif
642		628
		629	#if USE_VALGRIND
		630	cctx->valgrind_id = VALGRIND_STACK_REGISTER (
		631	STACKGUARD * PAGESIZE + (char *)cctx->sptr,
		632	cctx->ssize + (char *)cctx->sptr
		633	);
		634	#endif
		635
643	coro_create (&stack->cctx, coro_run, (void *)stack, stack->sptr, stack->ssize);	636	coro_create (&cctx->cctx, coro_run, (void *)cctx, cctx->sptr, cctx->ssize);
644		637
645	return stack;	638	return cctx;
646	}	639	}
647		640
648	static void	641	static void
649	stack_free (coro_stack *stack)	642	cctx_destroy (coro_cctx *cctx)
650	{	643	{
651	if (!stack)	644	if (!cctx)
652	return;	645	return;
653		646
		647	--cctx_count;
		648
		649	#if USE_VALGRIND
		650	VALGRIND_STACK_DEREGISTER (cctx->valgrind_id);
		651	#endif
		652
654	#if HAVE_MMAP	653	#if HAVE_MMAP
655	munmap (stack->sptr, stack->ssize);	654	munmap (cctx->sptr, cctx->ssize);
656	#else	655	#else
657	Safefree (stack->sptr);	656	Safefree (cctx->sptr);
658	#endif	657	#endif
659		658
660	Safefree (stack);	659	Safefree (cctx);
661	}	660	}
662		661
663	static coro_stack *stack_first;
664
665	static coro_stack *	662	static coro_cctx *
666	stack_get ()	663	cctx_get ()
667	{	664	{
668	coro_stack *stack;	665	coro_cctx *cctx;
669		666
670	if (stack_first)	667	if (cctx_first)
671	{	668	{
672	stack = stack_first;	669	cctx = cctx_first;
673	stack_first = stack->next;	670	cctx_first = cctx->next;
		671	--cctx_idle;
674	}	672	}
675	else	673	else
676	{	674	{
677	stack = stack_new ();	675	cctx = cctx_new ();
678	PL_op = PL_op->op_next;	676	PL_op = PL_op->op_next;
679	}	677	}
680		678
681	return stack;	679	return cctx;
682	}	680	}
683		681
684	static void	682	static void
685	stack_put (coro_stack *stack)	683	cctx_put (coro_cctx *cctx)
686	{	684	{
687	stack->next = stack_first;	685	/* free another cctx if overlimit */
688	stack_first = stack;	686	if (cctx_idle >= MAX_IDLE_CCTX)
		687	{
		688	coro_cctx *first = cctx_first;
		689	cctx_first = first->next;
		690	--cctx_idle;
		691
		692	assert (!first->inuse);
		693	cctx_destroy (first);
		694	}
		695
		696	++cctx_idle;
		697	cctx->next = cctx_first;
		698	cctx_first = cctx;
689	}	699	}
690		700
691	/* never call directly, always through the coro_state_transfer global variable */	701	/* never call directly, always through the coro_state_transfer global variable */
692	static void	702	static void NOINLINE
693	transfer_impl (pTHX_ struct coro prev, struct coro next, int flags)	703	transfer (struct coro prev, struct coro next)
694	{	704	{
695	dSTACKLEVEL;	705	dSTACKLEVEL;
696		706
697	/* sometimes transfer is only called to set idle_sp */	707	/* sometimes transfer is only called to set idle_sp */
698	if (flags == TRANSFER_SET_STACKLEVEL)	708	if (!next)
		709	{
699	((coro_stack *)prev)->idle_sp = STACKLEVEL;	710	((coro_cctx *)prev)->idle_sp = STACKLEVEL;
		711	assert (((coro_cctx )prev)->top_env = PL_top_env); / just for the side effetc when assert is enabled */
		712	}
700	else if (prev != next)	713	else if (prev != next)
701	{	714	{
702	coro_stack *prev__stack;	715	coro_cctx *prev__cctx;
		716
		717	if (prev->flags & CF_NEW)
		718	{
		719	/* create a new empty context */
		720	Newz (0, prev->cctx, 1, coro_cctx);
		721	prev->cctx->inuse = 1;
		722	prev->flags &= ~CF_NEW;
		723	prev->flags \|= CF_RUNNING;
		724	}
		725
		726	/TODO: must not croak here /
		727	if (!prev->flags & CF_RUNNING)
		728	croak ("Coro::State::transfer called with non-running prev Coro::State, but can only transfer from running states");
		729
		730	if (next->flags & CF_RUNNING)
		731	croak ("Coro::State::transfer called with running next Coro::State, but can only transfer to inactive states");
		732
		733	prev->flags &= ~CF_RUNNING;
		734	next->flags \|= CF_RUNNING;
703		735
704	LOCK;	736	LOCK;
705		737
706	if (next->mainstack)	738	if (next->flags & CF_NEW)
707	{	739	{
708	/* coroutine already started */	740	/* need to start coroutine */
709	SAVE (prev, flags);	741	next->flags &= ~CF_NEW;
710	LOAD (next);	742	/* first get rid of the old state */
		743	save_perl (prev);
		744	/* setup coroutine call */
		745	setup_coro (next);
		746	/* need a new stack */
		747	assert (!next->cctx);
711	}	748	}
712	else	749	else
713	{	750	{
714	/* need to start coroutine */	751	/* coroutine already started */
715	/* first get rid of the old state */	752	save_perl (prev);
716	SAVE (prev, -1);	753	load_perl (next);
717	/* setup coroutine call */
718	setup_coro (next);
719	/* need a stack */
720	next->stack = 0;
721	}	754	}
722		755
723	if (!prev->stack)
724	/* create a new empty context */
725	Newz (0, prev->stack, 1, coro_stack);
726
727	prev__stack = prev->stack;	756	prev__cctx = prev->cctx;
728		757
729	/* possibly "free" the stack */	758	/* possibly "free" the cctx */
730	if (prev__stack->idle_sp == STACKLEVEL)	759	if (prev__cctx->idle_sp == STACKLEVEL)
731	{	760	{
732	stack_put (prev__stack);	761	/* I assume that STACKLEVEL is a stronger indicator than PL_top_env changes */
		762	assert (PL_top_env == prev__cctx->top_env);
		763
733	prev->stack = 0;	764	prev->cctx = 0;
		765
		766	cctx_put (prev__cctx);
		767	prev__cctx->inuse = 0;
734	}	768	}
735		769
736	if (!next->stack)	770	if (!next->cctx)
737	next->stack = stack_get ();
738
739	if (prev__stack != next->stack)
740	{	771	{
		772	next->cctx = cctx_get ();
		773	assert (!next->cctx->inuse);
		774	next->cctx->inuse = 1;
		775	}
		776
		777	if (prev__cctx != next->cctx)
		778	{
741	prev__stack->top_env = PL_top_env;	779	prev__cctx->top_env = PL_top_env;
742	PL_top_env = next->stack->top_env;	780	PL_top_env = next->cctx->top_env;
743	coro_transfer (&prev__stack->cctx, &next->stack->cctx);	781	coro_transfer (&prev__cctx->cctx, &next->cctx->cctx);
744	}	782	}
745		783
746	free_coro_mortal ();	784	free_coro_mortal ();
747		785
748	UNLOCK;	786	UNLOCK;
749	}	787	}
750	}	788	}
751		789
752	/* use this function pointer to call the above function */
753	/* this is done to increase chances of the compiler not inlining the call */
754	/* not static to make it even harder for the compiler (and theoretically impossible in most cases */
755	void (coro_state_transfer)(pTHX_ struct coro prev, struct coro *next, int flags) = transfer_impl;
756
757	struct transfer_args	790	struct transfer_args
758	{	791	{
759	struct coro prev, next;	792	struct coro prev, next;
760	int flags;
761	};	793	};
762		794
763	#define TRANSFER(ta) coro_state_transfer ((ta).prev, (ta).next, (ta).flags)	795	#define TRANSFER(ta) transfer ((ta).prev, (ta).next)
764		796
765	static void	797	static void
766	coro_state_destroy (struct coro *coro)	798	coro_state_destroy (struct coro *coro)
767	{	799	{
768	if (coro->refcnt--)	800	if (coro->refcnt--)
769	return;	801	return;
770		802
771	if (coro->mainstack && coro->mainstack != main_mainstack)	803	if (coro->mainstack && coro->mainstack != main_mainstack)
772	{	804	{
773	struct coro temp;	805	struct coro temp;
		806	Zero (&temp, 1, struct coro);
		807	temp.save = CORO_SAVE_ALL;
774		808
775	SAVE (aTHX_ (&temp), TRANSFER_SAVE_ALL);	809	if (coro->flags & CF_RUNNING)
776	LOAD (aTHX_ coro);	810	croak ("FATAL: tried to destroy currently running coroutine");
777		811
		812	save_perl (&temp);
		813	load_perl (coro);
		814
778	destroy_stacks (aTHX);	815	coro_destroy_stacks ();
779		816
780	LOAD ((&temp)); /* this will get rid of defsv etc.. */	817	load_perl (&temp); /* this will get rid of defsv etc.. */
781		818
782	coro->mainstack = 0;	819	coro->mainstack = 0;
783	}	820	}
784		821
785	stack_free (coro->stack);	822	cctx_destroy (coro->cctx);
786	SvREFCNT_dec (coro->args);	823	SvREFCNT_dec (coro->args);
787	Safefree (coro);	824	Safefree (coro);
788	}	825	}
789		826
790	static int	827	static int
791	coro_state_clear (SV sv, MAGIC mg)	828	coro_state_clear (pTHX_ SV sv, MAGIC mg)
792	{	829	{
793	struct coro coro = (struct coro )mg->mg_ptr;	830	struct coro coro = (struct coro )mg->mg_ptr;
794	mg->mg_ptr = 0;	831	mg->mg_ptr = 0;
795		832
796	coro_state_destroy (coro);	833	coro_state_destroy (coro);
797		834
798	return 0;	835	return 0;
799	}	836	}
800		837
801	static int	838	static int
802	coro_state_dup (MAGIC mg, CLONE_PARAMS params)	839	coro_state_dup (pTHX_ MAGIC mg, CLONE_PARAMS params)
803	{	840	{
804	struct coro coro = (struct coro )mg->mg_ptr;	841	struct coro coro = (struct coro )mg->mg_ptr;
805		842
806	++coro->refcnt;	843	++coro->refcnt;
807		844
808	return 0;	845	return 0;
809	}	846	}
810		847
811	static MGVTBL coro_state_vtbl = { 0, 0, 0, 0, coro_state_clear, 0, coro_state_dup, 0 };	848	static MGVTBL coro_state_vtbl = {
		849	0, 0, 0, 0,
		850	coro_state_clear,
		851	0,
		852	#ifdef MGf_DUP
		853	coro_state_dup,
		854	#else
		855	# define MGf_DUP 0
		856	#endif
		857	};
812		858
813	static struct coro *	859	static struct coro *
814	SvSTATE (SV *coro)	860	SvSTATE (SV *coro)
815	{	861	{
816	HV *stash;	862	HV *stash;
…		…
831	assert (mg->mg_type == PERL_MAGIC_ext);	877	assert (mg->mg_type == PERL_MAGIC_ext);
832	return (struct coro *)mg->mg_ptr;	878	return (struct coro *)mg->mg_ptr;
833	}	879	}
834		880
835	static void	881	static void
836	prepare_transfer (pTHX_ struct transfer_args ta, SV prev, SV *next, int flags)	882	prepare_transfer (struct transfer_args ta, SV prev_sv, SV *next_sv)
837	{	883	{
838	ta->prev = SvSTATE (prev);	884	ta->prev = SvSTATE (prev_sv);
839	ta->next = SvSTATE (next);	885	ta->next = SvSTATE (next_sv);
840	ta->flags = flags;
841	}	886	}
842		887
843	static void	888	static void
844	api_transfer (SV prev, SV next, int flags)	889	api_transfer (SV prev_sv, SV next_sv)
845	{	890	{
846	dTHX;
847	struct transfer_args ta;	891	struct transfer_args ta;
848		892
849	prepare_transfer (aTHX_ &ta, prev, next, flags);	893	prepare_transfer (&ta, prev_sv, next_sv);
850	TRANSFER (ta);	894	TRANSFER (ta);
		895	}
		896
		897	static int
		898	api_save (SV *coro_sv, int new_save)
		899	{
		900	struct coro *coro = SvSTATE (coro_sv);
		901	int old_save = coro->save;
		902
		903	if (new_save >= 0)
		904	coro->save = new_save;
		905
		906	return old_save;
851	}	907	}
852		908
853	/ Coro ******************************************************************/	909	/ Coro ******************************************************************/
854		910
855	#define PRIO_MAX 3	911	#define PRIO_MAX 3
…		…
858	#define PRIO_LOW -1	914	#define PRIO_LOW -1
859	#define PRIO_IDLE -3	915	#define PRIO_IDLE -3
860	#define PRIO_MIN -4	916	#define PRIO_MIN -4
861		917
862	/* for Coro.pm */	918	/* for Coro.pm */
863	static GV coro_current, coro_idle;	919	static SV *coro_current;
864	static AV *coro_ready [PRIO_MAX-PRIO_MIN+1];	920	static AV *coro_ready [PRIO_MAX-PRIO_MIN+1];
865	static int coro_nready;	921	static int coro_nready;
866		922
867	static void	923	static void
868	coro_enq (pTHX_ SV *sv)	924	coro_enq (SV *coro_sv)
869	{	925	{
870	int prio;
871
872	if (SvTYPE (sv) != SVt_PVHV)
873	croak ("Coro::ready tried to enqueue something that is not a coroutine");
874
875	prio = SvSTATE (sv)->prio;
876
877	av_push (coro_ready [prio - PRIO_MIN], sv);	926	av_push (coro_ready [SvSTATE (coro_sv)->prio - PRIO_MIN], coro_sv);
878	coro_nready++;	927	coro_nready++;
879	}	928	}
880		929
881	static SV *	930	static SV *
882	coro_deq (pTHX_ int min_prio)	931	coro_deq (int min_prio)
883	{	932	{
884	int prio = PRIO_MAX - PRIO_MIN;	933	int prio = PRIO_MAX - PRIO_MIN;
885		934
886	min_prio -= PRIO_MIN;	935	min_prio -= PRIO_MIN;
887	if (min_prio < 0)	936	if (min_prio < 0)
…		…
895	}	944	}
896		945
897	return 0;	946	return 0;
898	}	947	}
899		948
900	static void	949	static int
901	api_ready (SV *coro)	950	api_ready (SV *coro_sv)
902	{	951	{
903	dTHX;	952	struct coro *coro;
904		953
905	if (SvROK (coro))	954	if (SvROK (coro_sv))
906	coro = SvRV (coro);	955	coro_sv = SvRV (coro_sv);
		956
		957	coro = SvSTATE (coro_sv);
		958
		959	if (coro->flags & CF_READY)
		960	return 0;
		961
		962	coro->flags \|= CF_READY;
907		963
908	LOCK;	964	LOCK;
909	coro_enq (aTHX_ SvREFCNT_inc (coro));	965	coro_enq (SvREFCNT_inc (coro_sv));
910	UNLOCK;	966	UNLOCK;
911	}
912		967
		968	return 1;
		969	}
		970
913	static void	971	static int
		972	api_is_ready (SV *coro_sv)
		973	{
		974	return !!(SvSTATE (coro_sv)->flags & CF_READY);
		975	}
		976
		977	static void
914	prepare_schedule (aTHX_ struct transfer_args *ta)	978	prepare_schedule (struct transfer_args *ta)
915	{	979	{
916	SV current, prev, *next;	980	SV prev, next;
917
918	LOCK;
919
920	current = GvSV (coro_current);
921		981
922	for (;;)	982	for (;;)
923	{	983	{
924	LOCK;	984	LOCK;
925
926	next = coro_deq (aTHX_ PRIO_MIN);	985	next = coro_deq (PRIO_MIN);
		986	UNLOCK;
927		987
928	if (next)	988	if (next)
929	break;	989	break;
930		990
931	UNLOCK;
932
933	{	991	{
934	dSP;	992	dSP;
935		993
936	ENTER;	994	ENTER;
937	SAVETMPS;	995	SAVETMPS;
938		996
939	PUSHMARK (SP);	997	PUSHMARK (SP);
940	PUTBACK;	998	PUTBACK;
941	call_sv (GvSV (coro_idle), G_DISCARD);	999	call_sv (get_sv ("Coro::idle", FALSE), G_DISCARD);
942		1000
943	FREETMPS;	1001	FREETMPS;
944	LEAVE;	1002	LEAVE;
945	}	1003	}
946	}	1004	}
947		1005
948	prev = SvRV (current);	1006	prev = SvRV (coro_current);
949	SvRV (current) = next;	1007	SvRV_set (coro_current, next);
950		1008
951	/* free this only after the transfer */	1009	/* free this only after the transfer */
		1010	LOCK;
952	free_coro_mortal ();	1011	free_coro_mortal ();
		1012	UNLOCK;
953	coro_mortal = prev;	1013	coro_mortal = prev;
954		1014
		1015	assert (!SvROK(prev));//D
		1016	assert (!SvROK(next));//D
		1017
955	ta->prev = SvSTATE (prev);	1018	ta->prev = SvSTATE (prev);
956	ta->next = SvSTATE (next);	1019	ta->next = SvSTATE (next);
957	ta->flags = TRANSFER_SAVE_ALL;
958		1020
959	UNLOCK;	1021	assert (ta->next->flags & CF_READY);
		1022	ta->next->flags &= ~CF_READY;
960	}	1023	}
961		1024
962	static void	1025	static void
963	prepare_cede (aTHX_ struct transfer_args *ta)	1026	prepare_cede (struct transfer_args *ta)
964	{	1027	{
965	LOCK;	1028	api_ready (coro_current);
966	coro_enq (aTHX_ SvREFCNT_inc (SvRV (GvSV (coro_current))));
967	UNLOCK;
968		1029
969	prepare_schedule (ta);	1030	prepare_schedule (ta);
970	}	1031	}
971		1032
972	static void	1033	static void
973	api_schedule (void)	1034	api_schedule (void)
974	{	1035	{
975	dTHX;
976	struct transfer_args ta;	1036	struct transfer_args ta;
977		1037
978	prepare_schedule (&ta);	1038	prepare_schedule (&ta);
979	TRANSFER (ta);	1039	TRANSFER (ta);
980	}	1040	}
981		1041
982	static void	1042	static void
983	api_cede (void)	1043	api_cede (void)
984	{	1044	{
985	dTHX;
986	struct transfer_args ta;	1045	struct transfer_args ta;
987		1046
988	prepare_cede (&ta);	1047	prepare_cede (&ta);
989	TRANSFER (ta);	1048	TRANSFER (ta);
990	}	1049	}
…		…
1000	#endif	1059	#endif
1001	BOOT_PAGESIZE;	1060	BOOT_PAGESIZE;
1002		1061
1003	coro_state_stash = gv_stashpv ("Coro::State", TRUE);	1062	coro_state_stash = gv_stashpv ("Coro::State", TRUE);
1004		1063
1005	newCONSTSUB (coro_state_stash, "SAVE_DEFAV", newSViv (TRANSFER_SAVE_DEFAV));	1064	newCONSTSUB (coro_state_stash, "SAVE_DEFAV", newSViv (CORO_SAVE_DEFAV));
1006	newCONSTSUB (coro_state_stash, "SAVE_DEFSV", newSViv (TRANSFER_SAVE_DEFSV));	1065	newCONSTSUB (coro_state_stash, "SAVE_DEFSV", newSViv (CORO_SAVE_DEFSV));
1007	newCONSTSUB (coro_state_stash, "SAVE_ERRSV", newSViv (TRANSFER_SAVE_ERRSV));	1066	newCONSTSUB (coro_state_stash, "SAVE_ERRSV", newSViv (CORO_SAVE_ERRSV));
		1067	newCONSTSUB (coro_state_stash, "SAVE_IRSSV", newSViv (CORO_SAVE_IRSSV));
		1068	newCONSTSUB (coro_state_stash, "SAVE_ALL", newSViv (CORO_SAVE_ALL));
1008		1069
1009	main_mainstack = PL_mainstack;	1070	main_mainstack = PL_mainstack;
1010		1071
1011	coroapi.ver = CORO_API_VERSION;	1072	coroapi.ver = CORO_API_VERSION;
1012	coroapi.transfer = api_transfer;	1073	coroapi.transfer = api_transfer;
…		…
1022	HV *hv;	1083	HV *hv;
1023	int i;	1084	int i;
1024		1085
1025	Newz (0, coro, 1, struct coro);	1086	Newz (0, coro, 1, struct coro);
1026	coro->args = newAV ();	1087	coro->args = newAV ();
		1088	coro->save = CORO_SAVE_ALL;
		1089	coro->flags = CF_NEW;
1027		1090
1028	hv = newHV ();	1091	hv = newHV ();
1029	sv_magicext ((SV )hv, 0, PERL_MAGIC_ext, &coro_state_vtbl, (char )coro, 0)->mg_flags \|= MGf_DUP;	1092	sv_magicext ((SV )hv, 0, PERL_MAGIC_ext, &coro_state_vtbl, (char )coro, 0)->mg_flags \|= MGf_DUP;
1030	RETVAL = sv_bless (newRV_noinc ((SV *)hv), gv_stashpv (klass, 1));	1093	RETVAL = sv_bless (newRV_noinc ((SV *)hv), gv_stashpv (klass, 1));
1031		1094
1032	for (i = 1; i < items; i++)	1095	for (i = 1; i < items; i++)
1033	av_push (coro->args, newSVsv (ST (i)));	1096	av_push (coro->args, newSVsv (ST (i)));
1034
1035	/coro->mainstack = 0; //actual work is done inside transfer /
1036	/coro->stack = 0;/
1037	}	1097	}
1038	OUTPUT:	1098	OUTPUT:
		1099	RETVAL
		1100
		1101	int
		1102	save (SV *coro, int new_save = -1)
		1103	CODE:
		1104	RETVAL = api_save (coro, new_save);
		1105	OUTPUT:
1039	RETVAL	1106	RETVAL
1040		1107
1041	void	1108	void
1042	_set_stacklevel (...)	1109	_set_stacklevel (...)
1043	ALIAS:	1110	ALIAS:
1044	Coro::State::transfer = 1	1111	Coro::State::transfer = 1
1045	Coro::schedule = 2	1112	Coro::schedule = 2
1046	Coro::cede = 3	1113	Coro::cede = 3
1047	Coro::Cont::yield = 4
1048	CODE:	1114	CODE:
1049	{	1115	{
1050	struct transfer_args ta;	1116	struct transfer_args ta;
1051		1117
1052	switch (ix)	1118	switch (ix)
1053	{	1119	{
1054	case 0:	1120	case 0:
1055	ta.prev = (struct coro )INT2PTR (coro_stack , SvIV (ST (0)));	1121	ta.prev = (struct coro )INT2PTR (coro_cctx , SvIV (ST (0)));
1056	ta.next = 0;	1122	ta.next = 0;
1057	ta.flags = TRANSFER_SET_STACKLEVEL;
1058	break;	1123	break;
1059		1124
1060	case 1:	1125	case 1:
1061	if (items != 3)	1126	if (items != 2)
1062	croak ("Coro::State::transfer(prev,next,flags) expects three arguments, not %d", items);	1127	croak ("Coro::State::transfer (prev,next) expects two arguments, not %d", items);
1063		1128
1064	prepare_transfer (&ta, ST (0), ST (1), SvIV (ST (2)));	1129	prepare_transfer (&ta, ST (0), ST (1));
1065	break;	1130	break;
1066		1131
1067	case 2:	1132	case 2:
1068	prepare_schedule (&ta);	1133	prepare_schedule (&ta);
1069	break;	1134	break;
1070		1135
1071	case 3:	1136	case 3:
1072	prepare_cede (&ta);	1137	prepare_cede (&ta);
1073	break;	1138	break;
1074
1075	case 4:
1076	{
1077	SV *yieldstack;
1078	SV *sv;
1079	AV *defav = GvAV (PL_defgv);
1080
1081	yieldstack = *hv_fetch (
1082	(HV *)SvRV (GvSV (coro_current)),
1083	"yieldstack", sizeof ("yieldstack") - 1,
1084	0
1085	);
1086
1087	/* set up @_ -- ugly */
1088	av_clear (defav);
1089	av_fill (defav, items - 1);
1090	while (items--)
1091	av_store (defav, items, SvREFCNT_inc (ST(items)));
1092
1093	sv = av_pop ((AV *)SvRV (yieldstack));
1094	ta.prev = SvSTATE (av_fetch ((AV )SvRV (sv), 0, 0));
1095	ta.next = SvSTATE (av_fetch ((AV )SvRV (sv), 1, 0));
1096	ta.flags = 0;
1097	SvREFCNT_dec (sv);
1098	}
1099	break;
1100
1101	}	1139	}
1102		1140
1103	TRANSFER (ta);	1141	TRANSFER (ta);
1104	}	1142	}
1105		1143
…		…
1112	sv_unmagic (SvRV (dst), PERL_MAGIC_ext);	1150	sv_unmagic (SvRV (dst), PERL_MAGIC_ext);
1113		1151
1114	++coro_src->refcnt;	1152	++coro_src->refcnt;
1115	sv_magicext (SvRV (dst), 0, PERL_MAGIC_ext, &coro_state_vtbl, (char *)coro_src, 0)->mg_flags \|= MGf_DUP;	1153	sv_magicext (SvRV (dst), 0, PERL_MAGIC_ext, &coro_state_vtbl, (char *)coro_src, 0)->mg_flags \|= MGf_DUP;
1116	}	1154	}
1117
1118	void
1119	_nonlocal_goto (IV nextop)
1120	CODE:
1121	/* uuh, somebody will kill me again for this */
1122	PL_op->op_next = INT2PTR (OP *, nextop);
1123		1155
1124	void	1156	void
1125	_exit (code)	1157	_exit (code)
1126	int code	1158	int code
1127	PROTOTYPE: $	1159	PROTOTYPE: $
1128	CODE:	1160	CODE:
1129	_exit (code);	1161	_exit (code);
1130		1162
		1163	int
		1164	cctx_count ()
		1165	CODE:
		1166	RETVAL = cctx_count;
		1167	OUTPUT:
		1168	RETVAL
		1169
		1170	int
		1171	cctx_idle ()
		1172	CODE:
		1173	RETVAL = cctx_idle;
		1174	OUTPUT:
		1175	RETVAL
		1176
1131	MODULE = Coro::State PACKAGE = Coro	1177	MODULE = Coro::State PACKAGE = Coro
1132		1178
1133	BOOT:	1179	BOOT:
1134	{	1180	{
1135	int i;	1181	int i;
…		…
1141	newCONSTSUB (coro_stash, "PRIO_NORMAL", newSViv (PRIO_NORMAL));	1187	newCONSTSUB (coro_stash, "PRIO_NORMAL", newSViv (PRIO_NORMAL));
1142	newCONSTSUB (coro_stash, "PRIO_LOW", newSViv (PRIO_LOW));	1188	newCONSTSUB (coro_stash, "PRIO_LOW", newSViv (PRIO_LOW));
1143	newCONSTSUB (coro_stash, "PRIO_IDLE", newSViv (PRIO_IDLE));	1189	newCONSTSUB (coro_stash, "PRIO_IDLE", newSViv (PRIO_IDLE));
1144	newCONSTSUB (coro_stash, "PRIO_MIN", newSViv (PRIO_MIN));	1190	newCONSTSUB (coro_stash, "PRIO_MIN", newSViv (PRIO_MIN));
1145		1191
1146	coro_current = gv_fetchpv ("Coro::current", TRUE, SVt_PV);	1192	coro_current = get_sv ("Coro::current", FALSE);
1147	coro_idle = gv_fetchpv ("Coro::idle" , TRUE, SVt_PV);	1193	SvREADONLY_on (coro_current);
1148		1194
1149	for (i = PRIO_MAX - PRIO_MIN + 1; i--; )	1195	for (i = PRIO_MAX - PRIO_MIN + 1; i--; )
1150	coro_ready[i] = newAV ();	1196	coro_ready[i] = newAV ();
1151		1197
1152	{	1198	{
1153	SV *sv = perl_get_sv("Coro::API", 1);	1199	SV *sv = perl_get_sv("Coro::API", 1);
1154		1200
1155	coroapi.schedule = api_schedule;	1201	coroapi.schedule = api_schedule;
		1202	coroapi.save = api_save;
1156	coroapi.cede = api_cede;	1203	coroapi.cede = api_cede;
1157	coroapi.ready = api_ready;	1204	coroapi.ready = api_ready;
		1205	coroapi.is_ready = api_is_ready;
1158	coroapi.nready = &coro_nready;	1206	coroapi.nready = &coro_nready;
1159	coroapi.current = coro_current;	1207	coroapi.current = coro_current;
1160		1208
1161	GCoroAPI = &coroapi;	1209	GCoroAPI = &coroapi;
1162	sv_setiv (sv, (IV)&coroapi);	1210	sv_setiv (sv, (IV)&coroapi);
1163	SvREADONLY_on (sv);	1211	SvREADONLY_on (sv);
1164	}	1212	}
1165	}	1213	}
		1214
		1215	void
		1216	_set_current (SV *current)
		1217	PROTOTYPE: $
		1218	CODE:
		1219	SvREFCNT_dec (SvRV (coro_current));
		1220	SvRV_set (coro_current, SvREFCNT_inc (SvRV (current)));
1166		1221
1167	int	1222	int
1168	prio (Coro::State coro, int newprio = 0)	1223	prio (Coro::State coro, int newprio = 0)
1169	ALIAS:	1224	ALIAS:
1170	nice = 1	1225	nice = 1
…		…
1173	RETVAL = coro->prio;	1228	RETVAL = coro->prio;
1174		1229
1175	if (items > 1)	1230	if (items > 1)
1176	{	1231	{
1177	if (ix)	1232	if (ix)
1178	newprio += coro->prio;	1233	newprio = coro->prio - newprio;
1179		1234
1180	if (newprio < PRIO_MIN) newprio = PRIO_MIN;	1235	if (newprio < PRIO_MIN) newprio = PRIO_MIN;
1181	if (newprio > PRIO_MAX) newprio = PRIO_MAX;	1236	if (newprio > PRIO_MAX) newprio = PRIO_MAX;
1182		1237
1183	coro->prio = newprio;	1238	coro->prio = newprio;
1184	}	1239	}
1185	}	1240	}
		1241	OUTPUT:
		1242	RETVAL
1186		1243
1187	void	1244	SV *
1188	ready (SV *self)	1245	ready (SV *self)
1189	PROTOTYPE: $	1246	PROTOTYPE: $
1190	CODE:	1247	CODE:
1191	api_ready (self);	1248	RETVAL = boolSV (api_ready (self));
		1249	OUTPUT:
		1250	RETVAL
		1251
		1252	SV *
		1253	is_ready (SV *self)
		1254	PROTOTYPE: $
		1255	CODE:
		1256	RETVAL = boolSV (api_is_ready (self));
		1257	OUTPUT:
		1258	RETVAL
1192		1259
1193	int	1260	int
1194	nready (...)	1261	nready (...)
1195	PROTOTYPE:	1262	PROTOTYPE:
1196	CODE:	1263	CODE:
…		…
1202		1269
1203	SV *	1270	SV *
1204	_get_state ()	1271	_get_state ()
1205	CODE:	1272	CODE:
1206	{	1273	{
1207	struct {	1274	struct io_state *data;
1208	int errorno;
1209	int laststype;
1210	int laststatval;
1211	Stat_t statcache;
1212	} data;
1213		1275
		1276	RETVAL = newSV (sizeof (struct io_state));
		1277	data = (struct io_state *)SvPVX (RETVAL);
		1278	SvCUR_set (RETVAL, sizeof (struct io_state));
		1279	SvPOK_only (RETVAL);
		1280
1214	data.errorno = errno;	1281	data->errorno = errno;
1215	data.laststype = PL_laststype;	1282	data->laststype = PL_laststype;
1216	data.laststatval = PL_laststatval;	1283	data->laststatval = PL_laststatval;
1217	data.statcache = PL_statcache;	1284	data->statcache = PL_statcache;
1218
1219	RETVAL = newSVpvn ((char *)&data, sizeof data);
1220	}	1285	}
1221	OUTPUT:	1286	OUTPUT:
1222	RETVAL	1287	RETVAL
1223		1288
1224	void	1289	void
1225	_set_state (char *data_)	1290	_set_state (char *data_)
1226	PROTOTYPE: $	1291	PROTOTYPE: $
1227	CODE:	1292	CODE:
1228	{	1293	{
1229	struct {	1294	struct io_state data = (void )data_;
1230	int errorno;
1231	int laststype;
1232	int laststatval;
1233	Stat_t statcache;
1234	} data = (void )data_;
1235		1295
1236	errno = data->errorno;	1296	errno = data->errorno;
1237	PL_laststype = data->laststype;	1297	PL_laststype = data->laststype;
1238	PL_laststatval = data->laststatval;	1298	PL_laststatval = data->laststatval;
1239	PL_statcache = data->statcache;	1299	PL_statcache = data->statcache;
1240	}	1300	}
		1301

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Comparing Coro/Coro/State.xs (file contents): Revision 1.97 by root, Sun Nov 26 21:21:14 2006 UTC vs. Revision 1.130 by root, Mon Dec 25 13:25:55 2006 UTC

Diff Legend

Comparing Coro/Coro/State.xs (file contents):
Revision 1.97 by root, Sun Nov 26 21:21:14 2006 UTC vs.
Revision 1.130 by root, Mon Dec 25 13:25:55 2006 UTC