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

Comparing Coro/Coro/State.xs (file contents):
Revision 1.94 by root, Sun Nov 26 17:14:15 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; / original stacklevel when coroutine was created */	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;
102		143
103	/* the (fake) coro_stack representing the main program */	144	int inuse;
104	static coro_stack *main_stack;	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	};
105		156
106	/* this is a structure representing a perl-level coroutine */	157	/* this is a structure representing a perl-level coroutine */
107	struct coro {	158	struct coro {
108	/* the c coroutine allocated to this perl coroutine, if any */	159	/* the c coroutine allocated to this perl coroutine, if any */
109	coro_stack *stack;	160	coro_cctx *cctx;
110		161
111	/* data associated with this coroutine (initial args) */	162	/* data associated with this coroutine (initial args) */
112	AV *args;	163	AV *args;
113	int refcnt;	164	int refcnt;
		165	int save; /* CORO_SAVE flags */
		166	int flags; /* CF_ flags */
114		167
115	/* optionally saved, might be zero */	168	/* optionally saved, might be zero */
116	AV *defav;	169	AV defav; / @_ */
117	SV *defsv;	170	SV defsv; / $_ */
118	SV *errsv;	171	SV errsv; / $@ */
		172	SV irssv; / $/ */
		173	SV irssv_sv; / real $/ cache */
119		174
120	/* saved global state not related to stacks */	175	#define VAR(name,type) type name;
121	U8 dowarn;	176	# include "state.h"
122	I32 in_eval;	177	#undef VAR
123
124	/* the stacks and related info (callchain etc..) */
125	PERL_SI *curstackinfo;
126	AV *curstack;
127	AV *mainstack;
128	SV **stack_sp;
129	OP *op;
130	SV **curpad;
131	AV *comppad;
132	CV *compcv;
133	SV **stack_base;
134	SV **stack_max;
135	SV **tmps_stack;
136	I32 tmps_floor;
137	I32 tmps_ix;
138	I32 tmps_max;
139	I32 *markstack;
140	I32 *markstack_ptr;
141	I32 *markstack_max;
142	I32 *scopestack;
143	I32 scopestack_ix;
144	I32 scopestack_max;
145	ANY *savestack;
146	I32 savestack_ix;
147	I32 savestack_max;
148	OP **retstack;
149	I32 retstack_ix;
150	I32 retstack_max;
151	PMOP *curpm;
152	COP *curcop;
153		178
154	/* coro process data */	179	/* coro process data */
155	int prio;	180	int prio;
156	};	181	};
157		182
158	typedef struct coro *Coro__State;	183	typedef struct coro *Coro__State;
159	typedef struct coro *Coro__State_or_hashref;	184	typedef struct coro *Coro__State_or_hashref;
160		185
161	static AV *	186	static AV *
162	coro_clone_padlist (pTHX_ CV *cv)	187	coro_clone_padlist (CV *cv)
163	{	188	{
164	AV *padlist = CvPADLIST (cv);	189	AV *padlist = CvPADLIST (cv);
165	AV newpadlist, newpad;	190	AV newpadlist, newpad;
166		191
167	newpadlist = newAV ();	192	newpadlist = newAV ();
168	AvREAL_off (newpadlist);	193	AvREAL_off (newpadlist);
169	#if PERL_VERSION < 9	194	#if PERL_VERSION_ATLEAST (5,9,0)
		195	Perl_pad_push (aTHX_ padlist, AvFILLp (padlist) + 1);
		196	#else
170	Perl_pad_push (aTHX_ padlist, AvFILLp (padlist) + 1, 1);	197	Perl_pad_push (aTHX_ padlist, AvFILLp (padlist) + 1, 1);
171	#else
172	Perl_pad_push (aTHX_ padlist, AvFILLp (padlist) + 1);
173	#endif	198	#endif
174	newpad = (AV *)AvARRAY (padlist)[AvFILLp (padlist)];	199	newpad = (AV *)AvARRAY (padlist)[AvFILLp (padlist)];
175	--AvFILLp (padlist);	200	--AvFILLp (padlist);
176		201
177	av_store (newpadlist, 0, SvREFCNT_inc (*av_fetch (padlist, 0, FALSE)));	202	av_store (newpadlist, 0, SvREFCNT_inc (*av_fetch (padlist, 0, FALSE)));
…		…
179		204
180	return newpadlist;	205	return newpadlist;
181	}	206	}
182		207
183	static void	208	static void
184	free_padlist (pTHX_ AV *padlist)	209	free_padlist (AV *padlist)
185	{	210	{
186	/* may be during global destruction */	211	/* may be during global destruction */
187	if (SvREFCNT (padlist))	212	if (SvREFCNT (padlist))
188	{	213	{
189	I32 i = AvFILLp (padlist);	214	I32 i = AvFILLp (padlist);
…		…
210	AV *padlist;	235	AV *padlist;
211	AV av = (AV )mg->mg_obj;	236	AV av = (AV )mg->mg_obj;
212		237
213	/* casting is fun. */	238	/* casting is fun. */
214	while (&PL_sv_undef != (SV )(padlist = (AV )av_pop (av)))	239	while (&PL_sv_undef != (SV )(padlist = (AV )av_pop (av)))
215	free_padlist (aTHX_ padlist);	240	free_padlist (padlist);
216		241
217	SvREFCNT_dec (av);	242	SvREFCNT_dec (av);
218		243
219	return 0;	244	return 0;
220	}	245	}
221		246
222	#define PERL_MAGIC_coro PERL_MAGIC_ext	247	#define PERL_MAGIC_coro PERL_MAGIC_ext
223		248
224	static MGVTBL vtbl_coro = {0, 0, 0, 0, coro_cv_free};	249	static MGVTBL vtbl_coro = {0, 0, 0, 0, coro_cv_free};
225		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
226	/* the next two functions merely cache the padlists */	258	/* the next two functions merely cache the padlists */
227	static void	259	static void
228	get_padlist (pTHX_ CV *cv)	260	get_padlist (CV *cv)
229	{	261	{
230	MAGIC mg = mg_find ((SV )cv, PERL_MAGIC_coro);	262	MAGIC *mg = CORO_MAGIC (cv);
		263	AV *av;
231		264
232	if (mg && AvFILLp ((AV *)mg->mg_obj) >= 0)	265	if (mg && AvFILLp ((av = (AV *)mg->mg_obj)) >= 0)
233	CvPADLIST (cv) = (AV )av_pop ((AV )mg->mg_obj);	266	CvPADLIST (cv) = (AV *)AvARRAY (av)[AvFILLp (av)--];
234	else	267	else
235	{	268	{
236	#if 0	269	#if PREFER_PERL_FUNCTIONS
237	/* this should work - but it doesn't :( */	270	/* this is probably cleaner, but also slower? */
238	CV *cp = Perl_cv_clone (aTHX_ cv);	271	CV *cp = Perl_cv_clone (cv);
239	CvPADLIST (cv) = CvPADLIST (cp);	272	CvPADLIST (cv) = CvPADLIST (cp);
240	CvPADLIST (cp) = 0;	273	CvPADLIST (cp) = 0;
241	SvREFCNT_dec (cp);	274	SvREFCNT_dec (cp);
242	#else	275	#else
243	CvPADLIST (cv) = coro_clone_padlist (aTHX_ cv);	276	CvPADLIST (cv) = coro_clone_padlist (cv);
244	#endif	277	#endif
245	}	278	}
246	}	279	}
247		280
248	static void	281	static void
249	put_padlist (pTHX_ CV *cv)	282	put_padlist (CV *cv)
250	{	283	{
251	MAGIC mg = mg_find ((SV )cv, PERL_MAGIC_coro);	284	MAGIC *mg = CORO_MAGIC (cv);
		285	AV *av;
252		286
253	if (!mg)	287	if (!mg)
254	{	288	{
255	sv_magic ((SV *)cv, 0, PERL_MAGIC_coro, 0, 0);	289	sv_magic ((SV *)cv, 0, PERL_MAGIC_coro, 0, 0);
256	mg = mg_find ((SV *)cv, PERL_MAGIC_coro);	290	mg = mg_find ((SV *)cv, PERL_MAGIC_coro);
257	mg->mg_virtual = &vtbl_coro;	291	mg->mg_virtual = &vtbl_coro;
258	mg->mg_obj = (SV *)newAV ();	292	mg->mg_obj = (SV *)newAV ();
259	}	293	}
260		294
261	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);
262	}	301	}
263		302
264	#define SB do {	303	#define SB do {
265	#define SE } while (0)	304	#define SE } while (0)
266		305
267	#define LOAD(state) load_state(aTHX_ (state));
268	#define SAVE(state,flags) save_state(aTHX_ (state),(flags));
269
270	#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
271		307
272	static void	308	static void
273	load_state(pTHX_ Coro__State c)	309	load_perl (Coro__State c)
274	{	310	{
275	PL_dowarn = c->dowarn;	311	#define VAR(name,type) PL_ ## name = c->name;
276	PL_in_eval = c->in_eval;	312	# include "state.h"
277		313	#undef VAR
278	PL_curstackinfo = c->curstackinfo;
279	PL_curstack = c->curstack;
280	PL_mainstack = c->mainstack;
281	PL_stack_sp = c->stack_sp;
282	PL_op = c->op;
283	PL_curpad = c->curpad;
284	PL_comppad = c->comppad;
285	PL_compcv = c->compcv;
286	PL_stack_base = c->stack_base;
287	PL_stack_max = c->stack_max;
288	PL_tmps_stack = c->tmps_stack;
289	PL_tmps_floor = c->tmps_floor;
290	PL_tmps_ix = c->tmps_ix;
291	PL_tmps_max = c->tmps_max;
292	PL_markstack = c->markstack;
293	PL_markstack_ptr = c->markstack_ptr;
294	PL_markstack_max = c->markstack_max;
295	PL_scopestack = c->scopestack;
296	PL_scopestack_ix = c->scopestack_ix;
297	PL_scopestack_max = c->scopestack_max;
298	PL_savestack = c->savestack;
299	PL_savestack_ix = c->savestack_ix;
300	PL_savestack_max = c->savestack_max;
301	#if PERL_VERSION < 9
302	PL_retstack = c->retstack;
303	PL_retstack_ix = c->retstack_ix;
304	PL_retstack_max = c->retstack_max;
305	#endif
306	PL_curpm = c->curpm;
307	PL_curcop = c->curcop;
308		314
309	if (c->defav) REPLACE_SV (GvAV (PL_defgv), c->defav);	315	if (c->defav) REPLACE_SV (GvAV (PL_defgv), c->defav);
310	if (c->defsv) REPLACE_SV (DEFSV , c->defsv);	316	if (c->defsv) REPLACE_SV (DEFSV , c->defsv);
311	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	}
312		329
313	{	330	{
314	dSP;	331	dSP;
315	CV *cv;	332	CV *cv;
316		333
317	/* now do the ugly restore mess */	334	/* now do the ugly restore mess */
318	while ((cv = (CV *)POPs))	335	while ((cv = (CV *)POPs))
319	{	336	{
320	AV padlist = (AV )POPs;
321
322	if (padlist)
323	{
324	put_padlist (aTHX_ cv); /* mark this padlist as available */	337	put_padlist (cv); /* mark this padlist as available */
325	CvPADLIST(cv) = padlist;	338	CvDEPTH (cv) = PTR2IV (POPs);
326	}	339	CvPADLIST (cv) = (AV *)POPs;
327
328	++CvDEPTH(cv);
329	}	340	}
330		341
331	PUTBACK;	342	PUTBACK;
332	}	343	}
333	}	344	}
334		345
335	static void	346	static void
336	save_state(pTHX_ Coro__State c, int flags)	347	save_perl (Coro__State c)
337	{	348	{
338	{	349	{
339	dSP;	350	dSP;
340	I32 cxix = cxstack_ix;	351	I32 cxix = cxstack_ix;
341	PERL_CONTEXT *ccstk = cxstack;	352	PERL_CONTEXT *ccstk = cxstack;
…		…
344	/*	355	/*
345	* 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
346	* (and reinitialize) all cv's in the whole callchain :(	357	* (and reinitialize) all cv's in the whole callchain :(
347	*/	358	*/
348		359
		360	EXTEND (SP, 3 + 1);
349	PUSHs (Nullsv);	361	PUSHs (Nullsv);
350	/* this loop was inspired by pp_caller */	362	/* this loop was inspired by pp_caller */
351	for (;;)	363	for (;;)
352	{	364	{
353	while (cxix >= 0)	365	while (cxix >= 0)
354	{	366	{
355	PERL_CONTEXT *cx = &ccstk[cxix--];	367	PERL_CONTEXT *cx = &ccstk[cxix--];
356		368
357	if (CxTYPE(cx) == CXt_SUB)	369	if (CxTYPE (cx) == CXt_SUB)
358	{	370	{
359	CV *cv = cx->blk_sub.cv;	371	CV *cv = cx->blk_sub.cv;
		372
360	if (CvDEPTH(cv))	373	if (CvDEPTH (cv))
361	{	374	{
362	EXTEND (SP, CvDEPTH(cv)*2);	375	EXTEND (SP, 3);
363
364	while (--CvDEPTH(cv))
365	{
366	/* this tells the restore code to increment CvDEPTH */
367	PUSHs (Nullsv);
368	PUSHs ((SV *)cv);
369	}
370
371	PUSHs ((SV *)CvPADLIST(cv));	376	PUSHs ((SV *)CvPADLIST (cv));
		377	PUSHs (INT2PTR (SV *, CvDEPTH (cv)));
372	PUSHs ((SV *)cv);	378	PUSHs ((SV *)cv);
373		379
		380	CvDEPTH (cv) = 0;
374	get_padlist (aTHX_ cv);	381	get_padlist (cv);
375	}	382	}
376	}	383	}
377	#ifdef CXt_FORMAT
378	else if (CxTYPE(cx) == CXt_FORMAT)
379	{
380	/* I never used formats, so how should I know how these are implemented? */
381	/* my bold guess is as a simple, plain sub... */
382	croak ("CXt_FORMAT not yet handled. Don't switch coroutines from within formats");
383	}
384	#endif
385	}	384	}
386		385
387	if (top_si->si_type == PERLSI_MAIN)	386	if (top_si->si_type == PERLSI_MAIN)
388	break;	387	break;
389		388
…		…
393	}	392	}
394		393
395	PUTBACK;	394	PUTBACK;
396	}	395	}
397		396
398	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;
399	c->defsv = flags & TRANSFER_SAVE_DEFSV ? SvREFCNT_inc (DEFSV) : 0;	398	c->defsv = c->save & CORO_SAVE_DEFSV ? SvREFCNT_inc (DEFSV) : 0;
400	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;
401		401
402	c->dowarn = PL_dowarn;	402	#define VAR(name,type)c->name = PL_ ## name;
403	c->in_eval = PL_in_eval;	403	# include "state.h"
404		404	#undef VAR
405	c->curstackinfo = PL_curstackinfo;
406	c->curstack = PL_curstack;
407	c->mainstack = PL_mainstack;
408	c->stack_sp = PL_stack_sp;
409	c->op = PL_op;
410	c->curpad = PL_curpad;
411	c->comppad = PL_comppad;
412	c->compcv = PL_compcv;
413	c->stack_base = PL_stack_base;
414	c->stack_max = PL_stack_max;
415	c->tmps_stack = PL_tmps_stack;
416	c->tmps_floor = PL_tmps_floor;
417	c->tmps_ix = PL_tmps_ix;
418	c->tmps_max = PL_tmps_max;
419	c->markstack = PL_markstack;
420	c->markstack_ptr = PL_markstack_ptr;
421	c->markstack_max = PL_markstack_max;
422	c->scopestack = PL_scopestack;
423	c->scopestack_ix = PL_scopestack_ix;
424	c->scopestack_max = PL_scopestack_max;
425	c->savestack = PL_savestack;
426	c->savestack_ix = PL_savestack_ix;
427	c->savestack_max = PL_savestack_max;
428	#if PERL_VERSION < 9
429	c->retstack = PL_retstack;
430	c->retstack_ix = PL_retstack_ix;
431	c->retstack_max = PL_retstack_max;
432	#endif
433	c->curpm = PL_curpm;
434	c->curcop = PL_curcop;
435	}	405	}
436		406
437	/*	407	/*
438	* allocate various perl stacks. This is an exact copy	408	* allocate various perl stacks. This is an exact copy
439	* of perl.c:init_stacks, except that it uses less memory	409	* of perl.c:init_stacks, except that it uses less memory
440	* on the (sometimes correct) assumption that coroutines do	410	* on the (sometimes correct) assumption that coroutines do
441	* not usually need a lot of stackspace.	411	* not usually need a lot of stackspace.
442	*/	412	*/
		413	#if PREFER_PERL_FUNCTIONS
		414	# define coro_init_stacks init_stacks
		415	#else
443	static void	416	static void
444	coro_init_stacks (pTHX)	417	coro_init_stacks ()
445	{	418	{
446	LOCK;
447
448	PL_curstackinfo = new_stackinfo(96, 1024/sizeof(PERL_CONTEXT) - 1);	419	PL_curstackinfo = new_stackinfo(128, 1024/sizeof(PERL_CONTEXT));
449	PL_curstackinfo->si_type = PERLSI_MAIN;	420	PL_curstackinfo->si_type = PERLSI_MAIN;
450	PL_curstack = PL_curstackinfo->si_stack;	421	PL_curstack = PL_curstackinfo->si_stack;
451	PL_mainstack = PL_curstack; /* remember in case we switch stacks */	422	PL_mainstack = PL_curstack; /* remember in case we switch stacks */
452		423
453	PL_stack_base = AvARRAY(PL_curstack);	424	PL_stack_base = AvARRAY(PL_curstack);
454	PL_stack_sp = PL_stack_base;	425	PL_stack_sp = PL_stack_base;
455	PL_stack_max = PL_stack_base + AvMAX(PL_curstack);	426	PL_stack_max = PL_stack_base + AvMAX(PL_curstack);
456		427
457	New(50,PL_tmps_stack,96,SV*);	428	New(50,PL_tmps_stack,128,SV*);
458	PL_tmps_floor = -1;	429	PL_tmps_floor = -1;
459	PL_tmps_ix = -1;	430	PL_tmps_ix = -1;
460	PL_tmps_max = 96;	431	PL_tmps_max = 128;
461		432
462	New(54,PL_markstack,16,I32);	433	New(54,PL_markstack,32,I32);
463	PL_markstack_ptr = PL_markstack;	434	PL_markstack_ptr = PL_markstack;
464	PL_markstack_max = PL_markstack + 16;	435	PL_markstack_max = PL_markstack + 32;
465		436
466	#ifdef SET_MARK_OFFSET	437	#ifdef SET_MARK_OFFSET
467	SET_MARK_OFFSET;	438	SET_MARK_OFFSET;
468	#endif	439	#endif
469		440
470	New(54,PL_scopestack,16,I32);	441	New(54,PL_scopestack,32,I32);
471	PL_scopestack_ix = 0;	442	PL_scopestack_ix = 0;
472	PL_scopestack_max = 16;	443	PL_scopestack_max = 32;
473		444
474	New(54,PL_savestack,96,ANY);	445	New(54,PL_savestack,64,ANY);
475	PL_savestack_ix = 0;	446	PL_savestack_ix = 0;
476	PL_savestack_max = 96;	447	PL_savestack_max = 64;
477		448
478	#if PERL_VERSION < 9	449	#if !PERL_VERSION_ATLEAST (5,9,0)
479	New(54,PL_retstack,8,OP*);	450	New(54,PL_retstack,16,OP*);
480	PL_retstack_ix = 0;	451	PL_retstack_ix = 0;
481	PL_retstack_max = 8;	452	PL_retstack_max = 16;
482	#endif	453	#endif
483
484	UNLOCK;
485	}	454	}
		455	#endif
486		456
487	/*	457	/*
488	* destroy the stacks, the callchain etc...	458	* destroy the stacks, the callchain etc...
489	*/	459	*/
490	static void	460	static void
491	destroy_stacks(pTHX)	461	coro_destroy_stacks ()
492	{	462	{
493	if (!IN_DESTRUCT)	463	if (!IN_DESTRUCT)
494	{	464	{
495	/* is this ugly, I ask? */	465	/* restore all saved variables and stuff */
496	LEAVE_SCOPE (0);	466	LEAVE_SCOPE (0);
		467	assert (PL_tmps_floor == -1);
497		468
498	/* sure it is, but more important: is it correct?? :/ */	469	/* free all temporaries */
499	FREETMPS;	470	FREETMPS;
		471	assert (PL_tmps_ix == -1);
500		472
501	/POPSTACK_TO (PL_mainstack);//D//use/	473	POPSTACK_TO (PL_mainstack);
502	}	474	}
503		475
504	while (PL_curstackinfo->si_next)	476	while (PL_curstackinfo->si_next)
505	PL_curstackinfo = PL_curstackinfo->si_next;	477	PL_curstackinfo = PL_curstackinfo->si_next;
506		478
507	while (PL_curstackinfo)	479	while (PL_curstackinfo)
508	{	480	{
509	PERL_SI *p = PL_curstackinfo->si_prev;	481	PERL_SI *p = PL_curstackinfo->si_prev;
510		482
511	{ /D//remove/
512	dSP;
513	SWITCHSTACK (PL_curstack, PL_curstackinfo->si_stack);
514	PUTBACK; /* possibly superfluous */
515	}
516
517	if (!IN_DESTRUCT)	483	if (!IN_DESTRUCT)
518	{
519	dounwind (-1);/D//remove/
520	SvREFCNT_dec (PL_curstackinfo->si_stack);	484	SvREFCNT_dec (PL_curstackinfo->si_stack);
521	}
522		485
523	Safefree (PL_curstackinfo->si_cxstack);	486	Safefree (PL_curstackinfo->si_cxstack);
524	Safefree (PL_curstackinfo);	487	Safefree (PL_curstackinfo);
525	PL_curstackinfo = p;	488	PL_curstackinfo = p;
526	}	489	}
527		490
528	Safefree (PL_tmps_stack);	491	Safefree (PL_tmps_stack);
529	Safefree (PL_markstack);	492	Safefree (PL_markstack);
530	Safefree (PL_scopestack);	493	Safefree (PL_scopestack);
531	Safefree (PL_savestack);	494	Safefree (PL_savestack);
532	#if PERL_VERSION < 9	495	#if !PERL_VERSION_ATLEAST (5,9,0)
533	Safefree (PL_retstack);	496	Safefree (PL_retstack);
534	#endif	497	#endif
535	}	498	}
536		499
537	static void	500	static void
538	setup_coro (struct coro *coro)	501	setup_coro (struct coro *coro)
539	{	502	{
540	/*	503	/*
541	* emulate part of the perl startup here.	504	* emulate part of the perl startup here.
542	*/	505	*/
543	dTHX;
544	dSP;
545	UNOP myop;
546	SV sub_init = (SV )get_cv ("Coro::State::coro_init", FALSE);
547		506
548	coro_init_stacks (aTHX);	507	coro_init_stacks ();
549	/PL_curcop = 0;/	508
550	/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
551	SvREFCNT_dec (GvAV (PL_defgv));	520	SvREFCNT_dec (GvAV (PL_defgv));
552	GvAV (PL_defgv) = coro->args; coro->args = 0;	521	GvAV (PL_defgv) = coro->args; coro->args = 0;
553		522
554	SPAGAIN;
555
556	Zero (&myop, 1, UNOP);	523	Zero (&myop, 1, LOGOP);
557	myop.op_next = Nullop;	524	myop.op_next = Nullop;
558	myop.op_flags = OPf_WANT_VOID;	525	myop.op_flags = OPf_WANT_VOID;
559		526
		527	PUSHMARK (SP);
		528	XPUSHs ((SV *)get_cv ("Coro::State::_coro_init", FALSE));
		529	PUTBACK;
560	PL_op = (OP *)&myop;	530	PL_op = (OP *)&myop;
561
562	PUSHMARK(SP);
563	XPUSHs (sub_init);
564	PUTBACK;
565	PL_op = PL_ppaddr[OP_ENTERSUB](aTHX);	531	PL_op = PL_ppaddr[OP_ENTERSUB](aTHX);
566	SPAGAIN;	532	SPAGAIN;
		533	}
567		534
568	ENTER; /* necessary e.g. for dounwind */	535	ENTER; /* necessary e.g. for dounwind */
569	}	536	}
570		537
571	static void	538	static void
…		…
576	SvREFCNT_dec (coro_mortal);	543	SvREFCNT_dec (coro_mortal);
577	coro_mortal = 0;	544	coro_mortal = 0;
578	}	545	}
579	}	546	}
580		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
581	static void	569	static void
582	coro_run (void *arg)	570	coro_run (void *arg)
583	{	571	{
		572	/* coro_run is the alternative tail of transfer(), so unlock here. */
		573	UNLOCK;
		574
584	/*	575	/*
585	* this is a _very_ stripped down perl interpreter ;)	576	* this is a _very_ stripped down perl interpreter ;)
586	*/	577	*/
587	dTHX;
588	int ret;
589
590	UNLOCK;
591
592	PL_top_env = &PL_start_env;	578	PL_top_env = &PL_start_env;
593		579
594	sv_setiv (get_sv ("Coro::State::cctx_stack", FALSE), PTR2IV ((coro_stack *)arg));	580	/* inject call to cctx_init */
595	sv_setiv (get_sv ("Coro::State::cctx_restartop", FALSE), PTR2IV (PL_op));	581	prepare_cctx ((coro_cctx *)arg);
596
597	/* continue at cctx_init, without entersub */
598	PL_restartop = CvSTART (get_cv ("Coro::State::cctx_init", FALSE));
599		582
600	/* somebody will hit me for both perl_run and PL_restartop */	583	/* somebody will hit me for both perl_run and PL_restartop */
601	ret = perl_run (aTHX_ PERL_GET_CONTEXT);	584	PL_restartop = PL_op;
602	printf ("ret %d\n", ret);//D	585	perl_run (PL_curinterp);
603		586
604	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);
605	abort ();	588	abort ();
606	}	589	}
607		590
608	static coro_stack *	591	static coro_cctx *
609	stack_new ()	592	cctx_new ()
610	{	593	{
611	coro_stack *stack;	594	coro_cctx *cctx;
612		595
		596	++cctx_count;
		597
613	New (0, stack, 1, coro_stack);	598	Newz (0, cctx, 1, coro_cctx);
614		599
615	#if HAVE_MMAP	600	#if HAVE_MMAP
616		601
617	stack->ssize = ((STACKSIZE * sizeof (long) + PAGESIZE - 1) / PAGESIZE + STACKGUARD) * PAGESIZE;	602	cctx->ssize = ((STACKSIZE * sizeof (long) + PAGESIZE - 1) / PAGESIZE + STACKGUARD) * PAGESIZE;
618	/* mmap suppsedly does allocate-on-write for us */	603	/* mmap supposedly does allocate-on-write for us */
619	stack->sptr = mmap (0, stack->ssize, PROT_EXEC\|PROT_READ\|PROT_WRITE, MAP_PRIVATE\|MAP_ANONYMOUS, 0, 0);	604	cctx->sptr = mmap (0, cctx->ssize, PROT_EXEC\|PROT_READ\|PROT_WRITE, MAP_PRIVATE\|MAP_ANONYMOUS, 0, 0);
620		605
621	if (stack->sptr == (void *)-1)	606	if (cctx->sptr == (void *)-1)
622	{	607	{
623	perror ("FATAL: unable to mmap stack for coroutine");	608	perror ("FATAL: unable to mmap stack for coroutine");
624	_exit (EXIT_FAILURE);	609	_exit (EXIT_FAILURE);
625	}	610	}
626		611
627	# if STACKGUARD	612	# if STACKGUARD
628	mprotect (stack->sptr, STACKGUARD * PAGESIZE, PROT_NONE);	613	mprotect (cctx->sptr, STACKGUARD * PAGESIZE, PROT_NONE);
629	# endif	614	# endif
630		615
631	#else	616	#else
632		617
633	stack->ssize = STACKSIZE * (long)sizeof (long);	618	cctx->ssize = STACKSIZE * (long)sizeof (long);
634	New (0, stack->sptr, STACKSIZE, long);	619	New (0, cctx->sptr, STACKSIZE, long);
635		620
636	if (!stack->sptr)	621	if (!cctx->sptr)
637	{	622	{
638	perror (stderr, "FATAL: unable to malloc stack for coroutine");	623	perror ("FATAL: unable to malloc stack for coroutine");
639	_exit (EXIT_FAILURE);	624	_exit (EXIT_FAILURE);
640	}	625	}
641		626
642	#endif	627	#endif
643		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
644	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);
645		637
646	return stack;	638	return cctx;
647	}	639	}
648		640
649	static void	641	static void
650	stack_free (coro_stack *stack)	642	cctx_destroy (coro_cctx *cctx)
651	{	643	{
652	if (!stack \|\| stack == main_stack)	644	if (!cctx)
653	return;	645	return;
654		646
		647	--cctx_count;
		648
		649	#if USE_VALGRIND
		650	VALGRIND_STACK_DEREGISTER (cctx->valgrind_id);
		651	#endif
		652
655	#if HAVE_MMAP	653	#if HAVE_MMAP
656	munmap (stack->sptr, stack->ssize);	654	munmap (cctx->sptr, cctx->ssize);
657	#else	655	#else
658	Safefree (stack->sptr);	656	Safefree (cctx->sptr);
659	#endif	657	#endif
660		658
661	Safefree (stack);	659	Safefree (cctx);
662	}	660	}
663		661
664	static coro_stack *stack_first;
665
666	static coro_stack *	662	static coro_cctx *
667	stack_get ()	663	cctx_get ()
668	{	664	{
669	coro_stack *stack;	665	coro_cctx *cctx;
670		666
671	if (stack_first)	667	if (cctx_first)
672	{	668	{
673	stack = stack_first;	669	cctx = cctx_first;
674	stack_first = stack->next;	670	cctx_first = cctx->next;
		671	--cctx_idle;
675	}	672	}
676	else	673	else
677	{	674	{
678	stack = stack_new ();	675	cctx = cctx_new ();
679	PL_op = PL_op->op_next;	676	PL_op = PL_op->op_next;
680	}	677	}
681		678
682	return stack;	679	return cctx;
683	}	680	}
684		681
685	static void	682	static void
686	stack_put (coro_stack *stack)	683	cctx_put (coro_cctx *cctx)
687	{	684	{
688	stack->next = stack_first;	685	/* free another cctx if overlimit */
689	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;
690	}	699	}
691		700
692	/* never call directly, always through the coro_state_transfer global variable */	701	/* never call directly, always through the coro_state_transfer global variable */
693	static void	702	static void NOINLINE
694	transfer_impl (pTHX_ struct coro prev, struct coro next, int flags)	703	transfer (struct coro prev, struct coro next)
695	{	704	{
696	dSTACKLEVEL;	705	dSTACKLEVEL;
697		706
698	/* sometimes transfer is only called to set idle_sp */	707	/* sometimes transfer is only called to set idle_sp */
699	if (flags == TRANSFER_SET_STACKLEVEL)	708	if (!next)
		709	{
700	((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	}
701	else if (prev != next)	713	else if (prev != next)
702	{	714	{
703	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;
704		735
705	LOCK;	736	LOCK;
706		737
707	if (next->mainstack)	738	if (next->flags & CF_NEW)
708	{	739	{
709	/* coroutine already started */	740	/* need to start coroutine */
710	SAVE (prev, flags);	741	next->flags &= ~CF_NEW;
711	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);
712	}	748	}
713	else	749	else
714	{	750	{
715	/* need to start coroutine */	751	/* coroutine already started */
716	/* first get rid of the old state */	752	save_perl (prev);
717	SAVE (prev, -1);	753	load_perl (next);
718	/* setup coroutine call */
719	setup_coro (next);
720	/* need a stack */
721	next->stack = 0;
722	}	754	}
723		755
724	prev__stack = prev->stack;	756	prev__cctx = prev->cctx;
725		757
726	/* possibly "free" the stack */	758	/* possibly "free" the cctx */
727	if (prev__stack->idle_sp == STACKLEVEL)	759	if (prev__cctx->idle_sp == STACKLEVEL)
728	{	760	{
729	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
730	prev->stack = 0;	764	prev->cctx = 0;
		765
		766	cctx_put (prev__cctx);
		767	prev__cctx->inuse = 0;
731	}	768	}
732		769
733	if (!next->stack)	770	if (!next->cctx)
734	next->stack = stack_get ();
735
736	if (prev__stack != next->stack)
737	{	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	{
738	prev__stack->top_env = PL_top_env;	779	prev__cctx->top_env = PL_top_env;
739	PL_top_env = next->stack->top_env;	780	PL_top_env = next->cctx->top_env;
740	printf ("stacksw %p %p\n", prev__stack->idle_sp, next->stack->idle_sp);//D
741	coro_transfer (&prev__stack->cctx, &next->stack->cctx);	781	coro_transfer (&prev__cctx->cctx, &next->cctx->cctx);
742	}	782	}
743		783
744	free_coro_mortal ();	784	free_coro_mortal ();
745		785
746	UNLOCK;	786	UNLOCK;
747	}	787	}
748	}	788	}
749		789
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	790	struct transfer_args
756	{	791	{
757	struct coro prev, next;	792	struct coro prev, next;
758	int flags;
759	};	793	};
760		794
761	#define TRANSFER(ta) coro_state_transfer ((ta).prev, (ta).next, (ta).flags)	795	#define TRANSFER(ta) transfer ((ta).prev, (ta).next)
762		796
763	static void	797	static void
764	coro_state_destroy (struct coro *coro)	798	coro_state_destroy (struct coro *coro)
765	{	799	{
766	if (coro->refcnt--)	800	if (coro->refcnt--)
767	return;	801	return;
768		802
769	if (coro->mainstack && coro->mainstack != main_mainstack)	803	if (coro->mainstack && coro->mainstack != main_mainstack)
770	{	804	{
771	struct coro temp;	805	struct coro temp;
		806	Zero (&temp, 1, struct coro);
		807	temp.save = CORO_SAVE_ALL;
772		808
773	SAVE (aTHX_ (&temp), TRANSFER_SAVE_ALL);	809	if (coro->flags & CF_RUNNING)
774	LOAD (aTHX_ coro);	810	croak ("FATAL: tried to destroy currently running coroutine");
775		811
		812	save_perl (&temp);
		813	load_perl (coro);
		814
776	destroy_stacks (aTHX);	815	coro_destroy_stacks ();
777		816
778	LOAD ((&temp)); /* this will get rid of defsv etc.. */	817	load_perl (&temp); /* this will get rid of defsv etc.. */
779		818
780	coro->mainstack = 0;	819	coro->mainstack = 0;
781	}	820	}
782		821
783	stack_free (coro->stack);	822	cctx_destroy (coro->cctx);
784	SvREFCNT_dec (coro->args);	823	SvREFCNT_dec (coro->args);
785	Safefree (coro);	824	Safefree (coro);
786	}	825	}
787		826
788	static int	827	static int
789	coro_state_clear (SV sv, MAGIC mg)	828	coro_state_clear (pTHX_ SV sv, MAGIC mg)
790	{	829	{
791	struct coro coro = (struct coro )mg->mg_ptr;	830	struct coro coro = (struct coro )mg->mg_ptr;
792	mg->mg_ptr = 0;	831	mg->mg_ptr = 0;
793		832
794	coro_state_destroy (coro);	833	coro_state_destroy (coro);
795		834
796	return 0;	835	return 0;
797	}	836	}
798		837
799	static int	838	static int
800	coro_state_dup (MAGIC mg, CLONE_PARAMS params)	839	coro_state_dup (pTHX_ MAGIC mg, CLONE_PARAMS params)
801	{	840	{
802	struct coro coro = (struct coro )mg->mg_ptr;	841	struct coro coro = (struct coro )mg->mg_ptr;
803		842
804	++coro->refcnt;	843	++coro->refcnt;
805		844
806	return 0;	845	return 0;
807	}	846	}
808		847
809	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	};
810		858
811	static struct coro *	859	static struct coro *
812	SvSTATE (SV *coro)	860	SvSTATE (SV *coro)
813	{	861	{
814	HV *stash;	862	HV *stash;
…		…
829	assert (mg->mg_type == PERL_MAGIC_ext);	877	assert (mg->mg_type == PERL_MAGIC_ext);
830	return (struct coro *)mg->mg_ptr;	878	return (struct coro *)mg->mg_ptr;
831	}	879	}
832		880
833	static void	881	static void
834	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)
835	{	883	{
836	ta->prev = SvSTATE (prev);	884	ta->prev = SvSTATE (prev_sv);
837	ta->next = SvSTATE (next);	885	ta->next = SvSTATE (next_sv);
838	ta->flags = flags;
839	}	886	}
840		887
841	static void	888	static void
842	api_transfer (SV prev, SV next, int flags)	889	api_transfer (SV prev_sv, SV next_sv)
843	{	890	{
844	dTHX;
845	struct transfer_args ta;	891	struct transfer_args ta;
846		892
847	prepare_transfer (aTHX_ &ta, prev, next, flags);	893	prepare_transfer (&ta, prev_sv, next_sv);
848	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;
849	}	907	}
850		908
851	/ Coro ******************************************************************/	909	/ Coro ******************************************************************/
852		910
853	#define PRIO_MAX 3	911	#define PRIO_MAX 3
…		…
856	#define PRIO_LOW -1	914	#define PRIO_LOW -1
857	#define PRIO_IDLE -3	915	#define PRIO_IDLE -3
858	#define PRIO_MIN -4	916	#define PRIO_MIN -4
859		917
860	/* for Coro.pm */	918	/* for Coro.pm */
861	static GV coro_current, coro_idle;	919	static SV *coro_current;
862	static AV *coro_ready [PRIO_MAX-PRIO_MIN+1];	920	static AV *coro_ready [PRIO_MAX-PRIO_MIN+1];
863	static int coro_nready;	921	static int coro_nready;
864		922
865	static void	923	static void
866	coro_enq (pTHX_ SV *sv)	924	coro_enq (SV *coro_sv)
867	{	925	{
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);	926	av_push (coro_ready [SvSTATE (coro_sv)->prio - PRIO_MIN], coro_sv);
876	coro_nready++;	927	coro_nready++;
877	}	928	}
878		929
879	static SV *	930	static SV *
880	coro_deq (pTHX_ int min_prio)	931	coro_deq (int min_prio)
881	{	932	{
882	int prio = PRIO_MAX - PRIO_MIN;	933	int prio = PRIO_MAX - PRIO_MIN;
883		934
884	min_prio -= PRIO_MIN;	935	min_prio -= PRIO_MIN;
885	if (min_prio < 0)	936	if (min_prio < 0)
…		…
893	}	944	}
894		945
895	return 0;	946	return 0;
896	}	947	}
897		948
898	static void	949	static int
899	api_ready (SV *coro)	950	api_ready (SV *coro_sv)
900	{	951	{
901	dTHX;	952	struct coro *coro;
902		953
903	if (SvROK (coro))	954	if (SvROK (coro_sv))
904	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;
905		963
906	LOCK;	964	LOCK;
907	coro_enq (aTHX_ SvREFCNT_inc (coro));	965	coro_enq (SvREFCNT_inc (coro_sv));
908	UNLOCK;	966	UNLOCK;
909	}
910		967
		968	return 1;
		969	}
		970
911	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
912	prepare_schedule (aTHX_ struct transfer_args *ta)	978	prepare_schedule (struct transfer_args *ta)
913	{	979	{
914	SV current, prev, *next;	980	SV prev, next;
915
916	LOCK;
917
918	current = GvSV (coro_current);
919		981
920	for (;;)	982	for (;;)
921	{	983	{
922	LOCK;	984	LOCK;
923
924	next = coro_deq (aTHX_ PRIO_MIN);	985	next = coro_deq (PRIO_MIN);
		986	UNLOCK;
925		987
926	if (next)	988	if (next)
927	break;	989	break;
928		990
929	UNLOCK;
930
931	{	991	{
932	dSP;	992	dSP;
933		993
934	ENTER;	994	ENTER;
935	SAVETMPS;	995	SAVETMPS;
936		996
937	PUSHMARK (SP);	997	PUSHMARK (SP);
938	PUTBACK;	998	PUTBACK;
939	call_sv (GvSV (coro_idle), G_DISCARD);	999	call_sv (get_sv ("Coro::idle", FALSE), G_DISCARD);
940		1000
941	FREETMPS;	1001	FREETMPS;
942	LEAVE;	1002	LEAVE;
943	}	1003	}
944	}	1004	}
945		1005
946	prev = SvRV (current);	1006	prev = SvRV (coro_current);
947	SvRV (current) = next;	1007	SvRV_set (coro_current, next);
948		1008
949	/* free this only after the transfer */	1009	/* free this only after the transfer */
		1010	LOCK;
950	free_coro_mortal ();	1011	free_coro_mortal ();
		1012	UNLOCK;
951	coro_mortal = prev;	1013	coro_mortal = prev;
952		1014
		1015	assert (!SvROK(prev));//D
		1016	assert (!SvROK(next));//D
		1017
953	ta->prev = SvSTATE (prev);	1018	ta->prev = SvSTATE (prev);
954	ta->next = SvSTATE (next);	1019	ta->next = SvSTATE (next);
955	ta->flags = TRANSFER_SAVE_ALL;
956		1020
957	UNLOCK;	1021	assert (ta->next->flags & CF_READY);
		1022	ta->next->flags &= ~CF_READY;
958	}	1023	}
959		1024
960	static void	1025	static void
961	prepare_cede (aTHX_ struct transfer_args *ta)	1026	prepare_cede (struct transfer_args *ta)
962	{	1027	{
963	LOCK;	1028	api_ready (coro_current);
964	coro_enq (aTHX_ SvREFCNT_inc (SvRV (GvSV (coro_current))));
965	UNLOCK;
966		1029
967	prepare_schedule (ta);	1030	prepare_schedule (ta);
968	}	1031	}
969		1032
970	static void	1033	static void
971	api_schedule (void)	1034	api_schedule (void)
972	{	1035	{
973	dTHX;
974	struct transfer_args ta;	1036	struct transfer_args ta;
975		1037
976	prepare_schedule (&ta);	1038	prepare_schedule (&ta);
977	TRANSFER (ta);	1039	TRANSFER (ta);
978	}	1040	}
979		1041
980	static void	1042	static void
981	api_cede (void)	1043	api_cede (void)
982	{	1044	{
983	dTHX;
984	struct transfer_args ta;	1045	struct transfer_args ta;
985		1046
986	prepare_cede (&ta);	1047	prepare_cede (&ta);
987	TRANSFER (ta);	1048	TRANSFER (ta);
988	}	1049	}
…		…
998	#endif	1059	#endif
999	BOOT_PAGESIZE;	1060	BOOT_PAGESIZE;
1000		1061
1001	coro_state_stash = gv_stashpv ("Coro::State", TRUE);	1062	coro_state_stash = gv_stashpv ("Coro::State", TRUE);
1002		1063
1003	newCONSTSUB (coro_state_stash, "SAVE_DEFAV", newSViv (TRANSFER_SAVE_DEFAV));	1064	newCONSTSUB (coro_state_stash, "SAVE_DEFAV", newSViv (CORO_SAVE_DEFAV));
1004	newCONSTSUB (coro_state_stash, "SAVE_DEFSV", newSViv (TRANSFER_SAVE_DEFSV));	1065	newCONSTSUB (coro_state_stash, "SAVE_DEFSV", newSViv (CORO_SAVE_DEFSV));
1005	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));
1006		1069
1007	main_mainstack = PL_mainstack;	1070	main_mainstack = PL_mainstack;
1008		1071
1009	coroapi.ver = CORO_API_VERSION;	1072	coroapi.ver = CORO_API_VERSION;
1010	coroapi.transfer = api_transfer;	1073	coroapi.transfer = api_transfer;
1011
1012	Newz (0, main_stack, 1, coro_stack);
1013	main_stack->idle_sp = (void *)-1;
1014		1074
1015	assert (("PRIO_NORMAL must be 0", !PRIO_NORMAL));	1075	assert (("PRIO_NORMAL must be 0", !PRIO_NORMAL));
1016	}	1076	}
1017		1077
1018	SV *	1078	SV *
…		…
1023	HV *hv;	1083	HV *hv;
1024	int i;	1084	int i;
1025		1085
1026	Newz (0, coro, 1, struct coro);	1086	Newz (0, coro, 1, struct coro);
1027	coro->args = newAV ();	1087	coro->args = newAV ();
		1088	coro->save = CORO_SAVE_ALL;
		1089	coro->flags = CF_NEW;
1028		1090
1029	hv = newHV ();	1091	hv = newHV ();
1030	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;
1031	RETVAL = sv_bless (newRV_noinc ((SV *)hv), gv_stashpv (klass, 1));	1093	RETVAL = sv_bless (newRV_noinc ((SV *)hv), gv_stashpv (klass, 1));
1032		1094
1033	for (i = 1; i < items; i++)	1095	for (i = 1; i < items; i++)
1034	av_push (coro->args, newSVsv (ST (i)));	1096	av_push (coro->args, newSVsv (ST (i)));
1035
1036	coro->stack = main_stack;
1037	/coro->mainstack = 0; //actual work is done inside transfer /
1038	/coro->stack = 0;/
1039	}	1097	}
1040	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:
1041	RETVAL	1106	RETVAL
1042		1107
1043	void	1108	void
1044	_set_stacklevel (...)	1109	_set_stacklevel (...)
1045	ALIAS:	1110	ALIAS:
1046	Coro::State::transfer = 1	1111	Coro::State::transfer = 1
1047	Coro::schedule = 2	1112	Coro::schedule = 2
1048	Coro::cede = 3	1113	Coro::cede = 3
1049	Coro::Cont::yield = 4
1050	CODE:	1114	CODE:
1051	{	1115	{
1052	struct transfer_args ta;	1116	struct transfer_args ta;
1053		1117
1054	switch (ix)	1118	switch (ix)
1055	{	1119	{
1056	case 0:	1120	case 0:
1057	ta.prev = (struct coro )INT2PTR (coro_stack , SvIV (ST (0)));	1121	ta.prev = (struct coro )INT2PTR (coro_cctx , SvIV (ST (0)));
1058	ta.next = 0;	1122	ta.next = 0;
1059	ta.flags = TRANSFER_SET_STACKLEVEL;
1060	break;	1123	break;
1061		1124
1062	case 1:	1125	case 1:
1063	if (items != 3)	1126	if (items != 2)
1064	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);
1065		1128
1066	prepare_transfer (&ta, ST (0), ST (1), SvIV (ST (2)));	1129	prepare_transfer (&ta, ST (0), ST (1));
1067	break;	1130	break;
1068		1131
1069	case 2:	1132	case 2:
1070	prepare_schedule (&ta);	1133	prepare_schedule (&ta);
1071	break;	1134	break;
1072		1135
1073	case 3:	1136	case 3:
1074	prepare_cede (&ta);	1137	prepare_cede (&ta);
1075	break;	1138	break;
1076
1077	case 4:
1078	{
1079	SV *yieldstack;
1080	SV *sv;
1081	AV *defav = GvAV (PL_defgv);
1082
1083	yieldstack = *hv_fetch (
1084	(HV *)SvRV (GvSV (coro_current)),
1085	"yieldstack", sizeof ("yieldstack") - 1,
1086	0
1087	);
1088
1089	/* set up @_ -- ugly */
1090	av_clear (defav);
1091	av_fill (defav, items - 1);
1092	while (items--)
1093	av_store (defav, items, SvREFCNT_inc (ST(items)));
1094
1095	sv = av_pop ((AV *)SvRV (yieldstack));
1096	ta.prev = SvSTATE (av_fetch ((AV )SvRV (sv), 0, 0));
1097	ta.next = SvSTATE (av_fetch ((AV )SvRV (sv), 1, 0));
1098	ta.flags = 0;
1099	SvREFCNT_dec (sv);
1100	}
1101	break;
1102
1103	}	1139	}
1104		1140
1105	TRANSFER (ta);	1141	TRANSFER (ta);
1106	}	1142	}
1107		1143
…		…
1114	sv_unmagic (SvRV (dst), PERL_MAGIC_ext);	1150	sv_unmagic (SvRV (dst), PERL_MAGIC_ext);
1115		1151
1116	++coro_src->refcnt;	1152	++coro_src->refcnt;
1117	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;
1118	}	1154	}
1119
1120	void
1121	_nonlocal_goto (IV nextop)
1122	CODE:
1123	/* uuh, somebody will kill me again for this */
1124	PL_op->op_next = INT2PTR (OP *, nextop);
1125		1155
1126	void	1156	void
1127	_exit (code)	1157	_exit (code)
1128	int code	1158	int code
1129	PROTOTYPE: $	1159	PROTOTYPE: $
1130	CODE:	1160	CODE:
1131	_exit (code);	1161	_exit (code);
1132		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
1133	MODULE = Coro::State PACKAGE = Coro	1177	MODULE = Coro::State PACKAGE = Coro
1134		1178
1135	BOOT:	1179	BOOT:
1136	{	1180	{
1137	int i;	1181	int i;
…		…
1143	newCONSTSUB (coro_stash, "PRIO_NORMAL", newSViv (PRIO_NORMAL));	1187	newCONSTSUB (coro_stash, "PRIO_NORMAL", newSViv (PRIO_NORMAL));
1144	newCONSTSUB (coro_stash, "PRIO_LOW", newSViv (PRIO_LOW));	1188	newCONSTSUB (coro_stash, "PRIO_LOW", newSViv (PRIO_LOW));
1145	newCONSTSUB (coro_stash, "PRIO_IDLE", newSViv (PRIO_IDLE));	1189	newCONSTSUB (coro_stash, "PRIO_IDLE", newSViv (PRIO_IDLE));
1146	newCONSTSUB (coro_stash, "PRIO_MIN", newSViv (PRIO_MIN));	1190	newCONSTSUB (coro_stash, "PRIO_MIN", newSViv (PRIO_MIN));
1147		1191
1148	coro_current = gv_fetchpv ("Coro::current", TRUE, SVt_PV);	1192	coro_current = get_sv ("Coro::current", FALSE);
1149	coro_idle = gv_fetchpv ("Coro::idle" , TRUE, SVt_PV);	1193	SvREADONLY_on (coro_current);
1150		1194
1151	for (i = PRIO_MAX - PRIO_MIN + 1; i--; )	1195	for (i = PRIO_MAX - PRIO_MIN + 1; i--; )
1152	coro_ready[i] = newAV ();	1196	coro_ready[i] = newAV ();
1153		1197
1154	{	1198	{
1155	SV *sv = perl_get_sv("Coro::API", 1);	1199	SV *sv = perl_get_sv("Coro::API", 1);
1156		1200
1157	coroapi.schedule = api_schedule;	1201	coroapi.schedule = api_schedule;
		1202	coroapi.save = api_save;
1158	coroapi.cede = api_cede;	1203	coroapi.cede = api_cede;
1159	coroapi.ready = api_ready;	1204	coroapi.ready = api_ready;
		1205	coroapi.is_ready = api_is_ready;
1160	coroapi.nready = &coro_nready;	1206	coroapi.nready = &coro_nready;
1161	coroapi.current = coro_current;	1207	coroapi.current = coro_current;
1162		1208
1163	GCoroAPI = &coroapi;	1209	GCoroAPI = &coroapi;
1164	sv_setiv (sv, (IV)&coroapi);	1210	sv_setiv (sv, (IV)&coroapi);
1165	SvREADONLY_on (sv);	1211	SvREADONLY_on (sv);
1166	}	1212	}
1167	}	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)));
1168		1221
1169	int	1222	int
1170	prio (Coro::State coro, int newprio = 0)	1223	prio (Coro::State coro, int newprio = 0)
1171	ALIAS:	1224	ALIAS:
1172	nice = 1	1225	nice = 1
…		…
1175	RETVAL = coro->prio;	1228	RETVAL = coro->prio;
1176		1229
1177	if (items > 1)	1230	if (items > 1)
1178	{	1231	{
1179	if (ix)	1232	if (ix)
1180	newprio += coro->prio;	1233	newprio = coro->prio - newprio;
1181		1234
1182	if (newprio < PRIO_MIN) newprio = PRIO_MIN;	1235	if (newprio < PRIO_MIN) newprio = PRIO_MIN;
1183	if (newprio > PRIO_MAX) newprio = PRIO_MAX;	1236	if (newprio > PRIO_MAX) newprio = PRIO_MAX;
1184		1237
1185	coro->prio = newprio;	1238	coro->prio = newprio;
1186	}	1239	}
1187	}	1240	}
		1241	OUTPUT:
		1242	RETVAL
1188		1243
1189	void	1244	SV *
1190	ready (SV *self)	1245	ready (SV *self)
1191	PROTOTYPE: $	1246	PROTOTYPE: $
1192	CODE:	1247	CODE:
1193	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
1194		1259
1195	int	1260	int
1196	nready (...)	1261	nready (...)
1197	PROTOTYPE:	1262	PROTOTYPE:
1198	CODE:	1263	CODE:
…		…
1204		1269
1205	SV *	1270	SV *
1206	_get_state ()	1271	_get_state ()
1207	CODE:	1272	CODE:
1208	{	1273	{
1209	struct {	1274	struct io_state *data;
1210	int errorno;
1211	int laststype;
1212	int laststatval;
1213	Stat_t statcache;
1214	} data;
1215		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
1216	data.errorno = errno;	1281	data->errorno = errno;
1217	data.laststype = PL_laststype;	1282	data->laststype = PL_laststype;
1218	data.laststatval = PL_laststatval;	1283	data->laststatval = PL_laststatval;
1219	data.statcache = PL_statcache;	1284	data->statcache = PL_statcache;
1220
1221	RETVAL = newSVpvn ((char *)&data, sizeof data);
1222	}	1285	}
1223	OUTPUT:	1286	OUTPUT:
1224	RETVAL	1287	RETVAL
1225		1288
1226	void	1289	void
1227	_set_state (char *data_)	1290	_set_state (char *data_)
1228	PROTOTYPE: $	1291	PROTOTYPE: $
1229	CODE:	1292	CODE:
1230	{	1293	{
1231	struct {	1294	struct io_state data = (void )data_;
1232	int errorno;
1233	int laststype;
1234	int laststatval;
1235	Stat_t statcache;
1236	} data = (void )data_;
1237		1295
1238	errno = data->errorno;	1296	errno = data->errorno;
1239	PL_laststype = data->laststype;	1297	PL_laststype = data->laststype;
1240	PL_laststatval = data->laststatval;	1298	PL_laststatval = data->laststatval;
1241	PL_statcache = data->statcache;	1299	PL_statcache = data->statcache;
1242	}	1300	}
		1301

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Comparing Coro/Coro/State.xs (file contents): Revision 1.94 by root, Sun Nov 26 17:14:15 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 1.94 by root, Sun Nov 26 17:14:15 2006 UTC vs.
Revision 1.130 by root, Mon Dec 25 13:25:55 2006 UTC