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

Comparing Coro/Coro/State.xs (file contents):
Revision 1.91 by root, Sat Nov 25 01:14:11 2006 UTC vs.
Revision 1.125 by root, Mon Dec 11 20:54:45 2006 UTC

…		…
1	#define PERL_NO_GET_CONTEXT
2
3	#include "libcoro/coro.c"	1	#include "libcoro/coro.c"
4		2
5	#include "EXTERN.h"	3	#include "EXTERN.h"
6	#include "perl.h"	4	#include "perl.h"
7	#include "XSUB.h"	5	#include "XSUB.h"
8		6
9	#include "patchlevel.h"	7	#include "patchlevel.h"
10		8
11	#if PERL_VERSION < 6	9	#if USE_VALGRIND
		10	# include <valgrind/valgrind.h>
		11	#endif
		12
		13	/* the maximum number of idle cctx that will be pooled */
		14	#define MAX_IDLE_CCTX 8
		15
		16	#define PERL_VERSION_ATLEAST(a,b,c) \
		17	(PERL_REVISION > (a) \
		18	\|\| (PERL_REVISION == (a) \
		19	&& (PERL_VERSION > (b) \
		20	\|\| (PERL_VERSION == (b) && PERLSUBVERSION >= (c)))))
		21
		22	#if !PERL_VERSION_ATLEAST (5,6,0)
12	# ifndef PL_ppaddr	23	# ifndef PL_ppaddr
13	# define PL_ppaddr ppaddr	24	# define PL_ppaddr ppaddr
14	# endif	25	# endif
15	# ifndef call_sv	26	# ifndef call_sv
16	# define call_sv perl_call_sv	27	# define call_sv perl_call_sv
27	# ifndef IS_PADCONST	38	# ifndef IS_PADCONST
28	# define IS_PADCONST(v) 0	39	# define IS_PADCONST(v) 0
29	# endif	40	# endif
30	#endif	41	#endif
31		42
		43	/* 5.8.7 */
		44	#ifndef SvRV_set
		45	# define SvRV_set(s,v) SvRV(s) = (v)
		46	#endif
		47
		48	#include <stdio.h>
32	#include <errno.h>	49	#include <errno.h>
		50	#include <assert.h>
33		51
34	#if !__i386 && !__x86_64 && !__powerpc && !__m68k && !__alpha && !__mips && !__sparc64	52	#if !__i386 && !__x86_64 && !__powerpc && !__m68k && !__alpha && !__mips && !__sparc64
35	# undef STACKGUARD	53	# undef STACKGUARD
36	#endif	54	#endif
37		55
…		…
53	# ifndef PAGESIZE	71	# ifndef PAGESIZE
54	# define PAGESIZE pagesize	72	# define PAGESIZE pagesize
55	# define BOOT_PAGESIZE pagesize = sysconf (_SC_PAGESIZE)	73	# define BOOT_PAGESIZE pagesize = sysconf (_SC_PAGESIZE)
56	static long pagesize;	74	static long pagesize;
57	# else	75	# else
58	# define BOOT_PAGESIZE	76	# define BOOT_PAGESIZE (void)0
59	# endif	77	# endif
		78	#else
		79	# define PAGESIZE 0
		80	# define BOOT_PAGESIZE (void)0
60	#endif	81	#endif
61
62	#define SUB_INIT "Coro::State::initialize"
63		82
64	/* The next macro should declare a variable stacklevel that contains and approximation	83	/* The next macro should declare a variable stacklevel that contains and approximation
65	* to the current C stack pointer. Its property is that it changes with each call	84	* to the current C stack pointer. Its property is that it changes with each call
66	* and should be unique. */	85	* and should be unique. */
		86	#define dSTACKLEVEL int stacklevel
67	#define dSTACKLEVEL void *stacklevel = &stacklevel	87	#define STACKLEVEL ((void *)&stacklevel)
68		88
69	#define IN_DESTRUCT (PL_main_cv == Nullcv)	89	#define IN_DESTRUCT (PL_main_cv == Nullcv)
70		90
71	#define labs(l) ((l) >= 0 ? (l) : -(l))	91	#if __GNUC__ >= 3
		92	# define attribute(x) __attribute__(x)
		93	#else
		94	# define attribute(x)
		95	#endif
		96
		97	#define NOINLINE attribute ((noinline))
72		98
73	#include "CoroAPI.h"	99	#include "CoroAPI.h"
74		100
75	#ifdef USE_ITHREADS	101	#ifdef USE_ITHREADS
76	static perl_mutex coro_mutex;	102	static perl_mutex coro_mutex;
…		…
79	#else	105	#else
80	# define LOCK (void)0	106	# define LOCK (void)0
81	# define UNLOCK (void)0	107	# define UNLOCK (void)0
82	#endif	108	#endif
83		109
		110	struct io_state
		111	{
		112	int errorno;
		113	I32 laststype;
		114	int laststatval;
		115	Stat_t statcache;
		116	};
		117
84	static struct CoroAPI coroapi;	118	static struct CoroAPI coroapi;
85	static AV main_mainstack; / used to differentiate between $main and others */	119	static AV main_mainstack; / used to differentiate between $main and others */
86	static HV coro_state_stash, coro_stash;	120	static HV coro_state_stash, coro_stash;
87	static SV coro_mortal; / will be freed after next transfer */	121	static SV coro_mortal; / will be freed after next transfer */
88		122
89	/* this is actually not just the c stack but also c registers etc... */	123	static struct coro_cctx *cctx_first;
		124	static int cctx_count, cctx_idle;
		125
		126	/* this is a structure representing a c-level coroutine */
90	typedef struct coro_stack {	127	typedef struct coro_cctx {
91	struct coro_stack *next;	128	struct coro_cctx *next;
92		129
93	void *idle_sp;	130	/* the stack */
94	void *sptr;	131	void *sptr;
95	long ssize; /* positive == mmap, otherwise malloc */	132	long ssize; /* positive == mmap, otherwise malloc */
96		133
97	/* cpu state */	134	/* cpu state */
		135	void idle_sp; / sp of top-level transfer/schedule/cede call */
		136	JMPENV *top_env;
98	coro_context cctx;	137	coro_context cctx;
99	} coro_stack;
100		138
101	static coro_stack *main_stack;	139	int inuse;
102		140
		141	#if USE_VALGRIND
		142	int valgrind_id;
		143	#endif
		144	} coro_cctx;
		145
		146	enum {
		147	CF_RUNNING = 0x0001, /* coroutine is running */
		148	CF_READY = 0x0002, /* coroutine is ready */
		149	CF_NEW = 0x0004, /* ahs never been switched to */
		150	};
		151
		152	/* this is a structure representing a perl-level coroutine */
103	struct coro {	153	struct coro {
104	/* optionally saved, might be zero */	154	/* the c coroutine allocated to this perl coroutine, if any */
105	AV *defav;	155	coro_cctx *cctx;
106	SV *defsv;
107	SV *errsv;
108
109	/* saved global state not related to stacks */
110	U8 dowarn;
111	I32 in_eval;
112
113	/* the c stack, if any */
114	coro_stack *stack;
115
116	/* the stacks and related info (callchain etc..) */
117	PERL_SI *curstackinfo;
118	AV *curstack;
119	AV *mainstack;
120	SV **stack_sp;
121	OP *op;
122	SV **curpad;
123	AV *comppad;
124	CV *compcv;
125	SV **stack_base;
126	SV **stack_max;
127	SV **tmps_stack;
128	I32 tmps_floor;
129	I32 tmps_ix;
130	I32 tmps_max;
131	I32 *markstack;
132	I32 *markstack_ptr;
133	I32 *markstack_max;
134	I32 *scopestack;
135	I32 scopestack_ix;
136	I32 scopestack_max;
137	ANY *savestack;
138	I32 savestack_ix;
139	I32 savestack_max;
140	OP **retstack;
141	I32 retstack_ix;
142	I32 retstack_max;
143	PMOP *curpm;
144	COP *curcop;
145	JMPENV *top_env;
146
147	/* coro process data */
148	int prio;
149		156
150	/* data associated with this coroutine (initial args) */	157	/* data associated with this coroutine (initial args) */
151	AV *args;	158	AV *args;
152	int refcnt;	159	int refcnt;
		160	int save; /* CORO_SAVE flags */
		161	int flags; /* CF_ flags */
		162
		163	/* optionally saved, might be zero */
		164	AV defav; / @_ */
		165	SV defsv; / $_ */
		166	SV errsv; / $@ */
		167	SV irssv; / $/ */
		168	SV irssv_sv; / real $/ cache */
		169
		170	#define VAR(name,type) type name;
		171	# include "state.h"
		172	#undef VAR
		173
		174	/* coro process data */
		175	int prio;
153	};	176	};
154		177
155	typedef struct coro *Coro__State;	178	typedef struct coro *Coro__State;
156	typedef struct coro *Coro__State_or_hashref;	179	typedef struct coro *Coro__State_or_hashref;
157		180
158	static AV *	181	static AV *
159	coro_clone_padlist (pTHX_ CV *cv)	182	coro_clone_padlist (CV *cv)
160	{	183	{
161	AV *padlist = CvPADLIST (cv);	184	AV *padlist = CvPADLIST (cv);
162	AV newpadlist, newpad;	185	AV newpadlist, newpad;
163		186
164	newpadlist = newAV ();	187	newpadlist = newAV ();
165	AvREAL_off (newpadlist);	188	AvREAL_off (newpadlist);
166	#if PERL_VERSION < 9	189	#if PERL_VERSION_ATLEAST (5,9,0)
		190	Perl_pad_push (aTHX_ padlist, AvFILLp (padlist) + 1);
		191	#else
167	Perl_pad_push (aTHX_ padlist, AvFILLp (padlist) + 1, 1);	192	Perl_pad_push (aTHX_ padlist, AvFILLp (padlist) + 1, 1);
168	#else
169	Perl_pad_push (aTHX_ padlist, AvFILLp (padlist) + 1);
170	#endif	193	#endif
171	newpad = (AV *)AvARRAY (padlist)[AvFILLp (padlist)];	194	newpad = (AV *)AvARRAY (padlist)[AvFILLp (padlist)];
172	--AvFILLp (padlist);	195	--AvFILLp (padlist);
173		196
174	av_store (newpadlist, 0, SvREFCNT_inc (*av_fetch (padlist, 0, FALSE)));	197	av_store (newpadlist, 0, SvREFCNT_inc (*av_fetch (padlist, 0, FALSE)));
…		…
176		199
177	return newpadlist;	200	return newpadlist;
178	}	201	}
179		202
180	static void	203	static void
181	free_padlist (pTHX_ AV *padlist)	204	free_padlist (AV *padlist)
182	{	205	{
183	/* may be during global destruction */	206	/* may be during global destruction */
184	if (SvREFCNT (padlist))	207	if (SvREFCNT (padlist))
185	{	208	{
186	I32 i = AvFILLp (padlist);	209	I32 i = AvFILLp (padlist);
…		…
207	AV *padlist;	230	AV *padlist;
208	AV av = (AV )mg->mg_obj;	231	AV av = (AV )mg->mg_obj;
209		232
210	/* casting is fun. */	233	/* casting is fun. */
211	while (&PL_sv_undef != (SV )(padlist = (AV )av_pop (av)))	234	while (&PL_sv_undef != (SV )(padlist = (AV )av_pop (av)))
212	free_padlist (aTHX_ padlist);	235	free_padlist (padlist);
213		236
214	SvREFCNT_dec (av);	237	SvREFCNT_dec (av);
215		238
216	return 0;	239	return 0;
217	}	240	}
218		241
219	#define PERL_MAGIC_coro PERL_MAGIC_ext	242	#define PERL_MAGIC_coro PERL_MAGIC_ext
220		243
221	static MGVTBL vtbl_coro = {0, 0, 0, 0, coro_cv_free};	244	static MGVTBL vtbl_coro = {0, 0, 0, 0, coro_cv_free};
222		245
		246	#define CORO_MAGIC(cv) \
		247	SvMAGIC (cv) \
		248	? SvMAGIC (cv)->mg_type == PERL_MAGIC_coro \
		249	? SvMAGIC (cv) \
		250	: mg_find ((SV *)cv, PERL_MAGIC_coro) \
		251	: 0
		252
223	/* the next two functions merely cache the padlists */	253	/* the next two functions merely cache the padlists */
224	static void	254	static void
225	get_padlist (pTHX_ CV *cv)	255	get_padlist (CV *cv)
226	{	256	{
227	MAGIC mg = mg_find ((SV )cv, PERL_MAGIC_coro);	257	MAGIC *mg = CORO_MAGIC (cv);
		258	AV *av;
228		259
229	if (mg && AvFILLp ((AV *)mg->mg_obj) >= 0)	260	if (mg && AvFILLp ((av = (AV *)mg->mg_obj)) >= 0)
230	CvPADLIST (cv) = (AV )av_pop ((AV )mg->mg_obj);	261	CvPADLIST (cv) = (AV *)AvARRAY (av)[AvFILLp (av)--];
231	else	262	else
232	{	263	{
233	#if 0	264	#if 0
234	/* this should work - but it doesn't :( */	265	/* this is probably cleaner, but also slower? */
235	CV *cp = Perl_cv_clone (aTHX_ cv);	266	CV *cp = Perl_cv_clone (cv);
236	CvPADLIST (cv) = CvPADLIST (cp);	267	CvPADLIST (cv) = CvPADLIST (cp);
237	CvPADLIST (cp) = 0;	268	CvPADLIST (cp) = 0;
238	SvREFCNT_dec (cp);	269	SvREFCNT_dec (cp);
239	#else	270	#else
240	CvPADLIST (cv) = coro_clone_padlist (aTHX_ cv);	271	CvPADLIST (cv) = coro_clone_padlist (cv);
241	#endif	272	#endif
242	}	273	}
243	}	274	}
244		275
245	static void	276	static void
246	put_padlist (pTHX_ CV *cv)	277	put_padlist (CV *cv)
247	{	278	{
248	MAGIC mg = mg_find ((SV )cv, PERL_MAGIC_coro);	279	MAGIC *mg = CORO_MAGIC (cv);
		280	AV *av;
249		281
250	if (!mg)	282	if (!mg)
251	{	283	{
252	sv_magic ((SV *)cv, 0, PERL_MAGIC_coro, 0, 0);	284	sv_magic ((SV *)cv, 0, PERL_MAGIC_coro, 0, 0);
253	mg = mg_find ((SV *)cv, PERL_MAGIC_coro);	285	mg = mg_find ((SV *)cv, PERL_MAGIC_coro);
254	mg->mg_virtual = &vtbl_coro;	286	mg->mg_virtual = &vtbl_coro;
255	mg->mg_obj = (SV *)newAV ();	287	mg->mg_obj = (SV *)newAV ();
256	}	288	}
257		289
258	av_push ((AV )mg->mg_obj, (SV )CvPADLIST (cv));	290	av = (AV *)mg->mg_obj;
		291
		292	if (AvFILLp (av) >= AvMAX (av))
		293	av_extend (av, AvMAX (av) + 1);
		294
		295	AvARRAY (av)[++AvFILLp (av)] = (SV *)CvPADLIST (cv);
259	}	296	}
260		297
261	#define SB do {	298	#define SB do {
262	#define SE } while (0)	299	#define SE } while (0)
263		300
264	#define LOAD(state) load_state(aTHX_ (state));
265	#define SAVE(state,flags) save_state(aTHX_ (state),(flags));
266
267	#define REPLACE_SV(sv,val) SB SvREFCNT_dec(sv); (sv) = (val); (val) = 0; SE	301	#define REPLACE_SV(sv,val) SB SvREFCNT_dec (sv); (sv) = (val); (val) = 0; SE
268		302
269	static void	303	static void
270	load_state(pTHX_ Coro__State c)	304	load_perl (Coro__State c)
271	{	305	{
272	PL_dowarn = c->dowarn;	306	#define VAR(name,type) PL_ ## name = c->name;
273	PL_in_eval = c->in_eval;	307	# include "state.h"
274		308	#undef VAR
275	PL_curstackinfo = c->curstackinfo;
276	PL_curstack = c->curstack;
277	PL_mainstack = c->mainstack;
278	PL_stack_sp = c->stack_sp;
279	PL_op = c->op;
280	PL_curpad = c->curpad;
281	PL_comppad = c->comppad;
282	PL_compcv = c->compcv;
283	PL_stack_base = c->stack_base;
284	PL_stack_max = c->stack_max;
285	PL_tmps_stack = c->tmps_stack;
286	PL_tmps_floor = c->tmps_floor;
287	PL_tmps_ix = c->tmps_ix;
288	PL_tmps_max = c->tmps_max;
289	PL_markstack = c->markstack;
290	PL_markstack_ptr = c->markstack_ptr;
291	PL_markstack_max = c->markstack_max;
292	PL_scopestack = c->scopestack;
293	PL_scopestack_ix = c->scopestack_ix;
294	PL_scopestack_max = c->scopestack_max;
295	PL_savestack = c->savestack;
296	PL_savestack_ix = c->savestack_ix;
297	PL_savestack_max = c->savestack_max;
298	#if PERL_VERSION < 9
299	PL_retstack = c->retstack;
300	PL_retstack_ix = c->retstack_ix;
301	PL_retstack_max = c->retstack_max;
302	#endif
303	PL_curpm = c->curpm;
304	PL_curcop = c->curcop;
305	PL_top_env = c->top_env;
306		309
307	if (c->defav) REPLACE_SV (GvAV (PL_defgv), c->defav);	310	if (c->defav) REPLACE_SV (GvAV (PL_defgv), c->defav);
308	if (c->defsv) REPLACE_SV (DEFSV , c->defsv);	311	if (c->defsv) REPLACE_SV (DEFSV , c->defsv);
309	if (c->errsv) REPLACE_SV (ERRSV , c->errsv);	312	if (c->errsv) REPLACE_SV (ERRSV , c->errsv);
		313	if (c->irssv)
		314	{
		315	if (c->irssv == PL_rs \|\| sv_eq (PL_rs, c->irssv))
		316	SvREFCNT_dec (c->irssv);
		317	else
		318	{
		319	REPLACE_SV (PL_rs, c->irssv);
		320	if (!c->irssv_sv) c->irssv_sv = get_sv ("/", 0);
		321	sv_setsv (c->irssv_sv, PL_rs);
		322	}
		323	}
310		324
311	{	325	{
312	dSP;	326	dSP;
313	CV *cv;	327	CV *cv;
314		328
315	/* now do the ugly restore mess */	329	/* now do the ugly restore mess */
316	while ((cv = (CV *)POPs))	330	while ((cv = (CV *)POPs))
317	{	331	{
318	AV padlist = (AV )POPs;
319
320	if (padlist)
321	{
322	put_padlist (aTHX_ cv); /* mark this padlist as available */	332	put_padlist (cv); /* mark this padlist as available */
323	CvPADLIST(cv) = padlist;	333	CvDEPTH (cv) = PTR2IV (POPs);
324	}	334	CvPADLIST (cv) = (AV *)POPs;
325
326	++CvDEPTH(cv);
327	}	335	}
328		336
329	PUTBACK;	337	PUTBACK;
330	}	338	}
331	}	339	}
332		340
333	static void	341	static void
334	save_state(pTHX_ Coro__State c, int flags)	342	save_perl (Coro__State c)
335	{	343	{
336	{	344	{
337	dSP;	345	dSP;
338	I32 cxix = cxstack_ix;	346	I32 cxix = cxstack_ix;
339	PERL_CONTEXT *ccstk = cxstack;	347	PERL_CONTEXT *ccstk = cxstack;
…		…
350	{	358	{
351	while (cxix >= 0)	359	while (cxix >= 0)
352	{	360	{
353	PERL_CONTEXT *cx = &ccstk[cxix--];	361	PERL_CONTEXT *cx = &ccstk[cxix--];
354		362
355	if (CxTYPE(cx) == CXt_SUB)	363	if (CxTYPE (cx) == CXt_SUB)
356	{	364	{
357	CV *cv = cx->blk_sub.cv;	365	CV *cv = cx->blk_sub.cv;
		366
358	if (CvDEPTH(cv))	367	if (CvDEPTH (cv))
359	{	368	{
360	EXTEND (SP, CvDEPTH(cv)*2);	369	EXTEND (SP, 3);
361		370
362	while (--CvDEPTH(cv))
363	{
364	/* this tells the restore code to increment CvDEPTH */
365	PUSHs (Nullsv);
366	PUSHs ((SV *)cv);
367	}
368
369	PUSHs ((SV *)CvPADLIST(cv));	371	PUSHs ((SV *)CvPADLIST (cv));
		372	PUSHs (INT2PTR (SV *, CvDEPTH (cv)));
370	PUSHs ((SV *)cv);	373	PUSHs ((SV *)cv);
371		374
		375	CvDEPTH (cv) = 0;
372	get_padlist (aTHX_ cv);	376	get_padlist (cv);
373	}	377	}
374	}	378	}
375	#ifdef CXt_FORMAT	379	#ifdef CXt_FORMAT
376	else if (CxTYPE(cx) == CXt_FORMAT)	380	else if (CxTYPE (cx) == CXt_FORMAT)
377	{	381	{
378	/* I never used formats, so how should I know how these are implemented? */	382	/* I never used formats, so how should I know how these are implemented? */
379	/* my bold guess is as a simple, plain sub... */	383	/* my bold guess is as a simple, plain sub... */
380	croak ("CXt_FORMAT not yet handled. Don't switch coroutines from within formats");	384	croak ("CXt_FORMAT not yet handled. Don't switch coroutines from within formats");
381	}	385	}
…		…
391	}	395	}
392		396
393	PUTBACK;	397	PUTBACK;
394	}	398	}
395		399
396	c->defav = flags & TRANSFER_SAVE_DEFAV ? (AV *)SvREFCNT_inc (GvAV (PL_defgv)) : 0;	400	c->defav = c->save & CORO_SAVE_DEFAV ? (AV *)SvREFCNT_inc (GvAV (PL_defgv)) : 0;
397	c->defsv = flags & TRANSFER_SAVE_DEFSV ? SvREFCNT_inc (DEFSV) : 0;	401	c->defsv = c->save & CORO_SAVE_DEFSV ? SvREFCNT_inc (DEFSV) : 0;
398	c->errsv = flags & TRANSFER_SAVE_ERRSV ? SvREFCNT_inc (ERRSV) : 0;	402	c->errsv = c->save & CORO_SAVE_ERRSV ? SvREFCNT_inc (ERRSV) : 0;
		403	c->irssv = c->save & CORO_SAVE_IRSSV ? SvREFCNT_inc (PL_rs) : 0;
399		404
400	c->dowarn = PL_dowarn;	405	#define VAR(name,type)c->name = PL_ ## name;
401	c->in_eval = PL_in_eval;	406	# include "state.h"
402		407	#undef VAR
403	c->curstackinfo = PL_curstackinfo;
404	c->curstack = PL_curstack;
405	c->mainstack = PL_mainstack;
406	c->stack_sp = PL_stack_sp;
407	c->op = PL_op;
408	c->curpad = PL_curpad;
409	c->comppad = PL_comppad;
410	c->compcv = PL_compcv;
411	c->stack_base = PL_stack_base;
412	c->stack_max = PL_stack_max;
413	c->tmps_stack = PL_tmps_stack;
414	c->tmps_floor = PL_tmps_floor;
415	c->tmps_ix = PL_tmps_ix;
416	c->tmps_max = PL_tmps_max;
417	c->markstack = PL_markstack;
418	c->markstack_ptr = PL_markstack_ptr;
419	c->markstack_max = PL_markstack_max;
420	c->scopestack = PL_scopestack;
421	c->scopestack_ix = PL_scopestack_ix;
422	c->scopestack_max = PL_scopestack_max;
423	c->savestack = PL_savestack;
424	c->savestack_ix = PL_savestack_ix;
425	c->savestack_max = PL_savestack_max;
426	#if PERL_VERSION < 9
427	c->retstack = PL_retstack;
428	c->retstack_ix = PL_retstack_ix;
429	c->retstack_max = PL_retstack_max;
430	#endif
431	c->curpm = PL_curpm;
432	c->curcop = PL_curcop;
433	c->top_env = PL_top_env;
434	}	408	}
435		409
436	/*	410	/*
437	* allocate various perl stacks. This is an exact copy	411	* allocate various perl stacks. This is an exact copy
438	* of perl.c:init_stacks, except that it uses less memory	412	* of perl.c:init_stacks, except that it uses less memory
439	* on the (sometimes correct) assumption that coroutines do	413	* on the (sometimes correct) assumption that coroutines do
440	* not usually need a lot of stackspace.	414	* not usually need a lot of stackspace.
441	*/	415	*/
442	static void	416	static void
443	coro_init_stacks (pTHX)	417	coro_init_stacks ()
444	{	418	{
445	LOCK;
446
447	PL_curstackinfo = new_stackinfo(96, 1024/sizeof(PERL_CONTEXT) - 1);	419	PL_curstackinfo = new_stackinfo(128, 1024/sizeof(PERL_CONTEXT));
448	PL_curstackinfo->si_type = PERLSI_MAIN;	420	PL_curstackinfo->si_type = PERLSI_MAIN;
449	PL_curstack = PL_curstackinfo->si_stack;	421	PL_curstack = PL_curstackinfo->si_stack;
450	PL_mainstack = PL_curstack; /* remember in case we switch stacks */	422	PL_mainstack = PL_curstack; /* remember in case we switch stacks */
451		423
452	PL_stack_base = AvARRAY(PL_curstack);	424	PL_stack_base = AvARRAY(PL_curstack);
453	PL_stack_sp = PL_stack_base;	425	PL_stack_sp = PL_stack_base;
454	PL_stack_max = PL_stack_base + AvMAX(PL_curstack);	426	PL_stack_max = PL_stack_base + AvMAX(PL_curstack);
455		427
456	New(50,PL_tmps_stack,96,SV*);	428	New(50,PL_tmps_stack,128,SV*);
457	PL_tmps_floor = -1;	429	PL_tmps_floor = -1;
458	PL_tmps_ix = -1;	430	PL_tmps_ix = -1;
459	PL_tmps_max = 96;	431	PL_tmps_max = 128;
460		432
461	New(54,PL_markstack,16,I32);	433	New(54,PL_markstack,32,I32);
462	PL_markstack_ptr = PL_markstack;	434	PL_markstack_ptr = PL_markstack;
463	PL_markstack_max = PL_markstack + 16;	435	PL_markstack_max = PL_markstack + 32;
464		436
465	#ifdef SET_MARK_OFFSET	437	#ifdef SET_MARK_OFFSET
466	SET_MARK_OFFSET;	438	SET_MARK_OFFSET;
467	#endif	439	#endif
468		440
469	New(54,PL_scopestack,16,I32);	441	New(54,PL_scopestack,32,I32);
470	PL_scopestack_ix = 0;	442	PL_scopestack_ix = 0;
471	PL_scopestack_max = 16;	443	PL_scopestack_max = 32;
472		444
473	New(54,PL_savestack,96,ANY);	445	New(54,PL_savestack,64,ANY);
474	PL_savestack_ix = 0;	446	PL_savestack_ix = 0;
475	PL_savestack_max = 96;	447	PL_savestack_max = 64;
476		448
477	#if PERL_VERSION < 9	449	#if !PERL_VERSION_ATLEAST (5,9,0)
478	New(54,PL_retstack,8,OP*);	450	New(54,PL_retstack,16,OP*);
479	PL_retstack_ix = 0;	451	PL_retstack_ix = 0;
480	PL_retstack_max = 8;	452	PL_retstack_max = 16;
481	#endif	453	#endif
482
483	UNLOCK;
484	}	454	}
485		455
486	/*	456	/*
487	* destroy the stacks, the callchain etc...	457	* destroy the stacks, the callchain etc...
488	*/	458	*/
489	static void	459	static void
490	destroy_stacks(pTHX)	460	coro_destroy_stacks ()
491	{	461	{
492	if (!IN_DESTRUCT)	462	if (!IN_DESTRUCT)
493	{	463	{
494	/* is this ugly, I ask? */	464	/* is this ugly, I ask? */
495	LEAVE_SCOPE (0);	465	LEAVE_SCOPE (0);
…		…
526		496
527	Safefree (PL_tmps_stack);	497	Safefree (PL_tmps_stack);
528	Safefree (PL_markstack);	498	Safefree (PL_markstack);
529	Safefree (PL_scopestack);	499	Safefree (PL_scopestack);
530	Safefree (PL_savestack);	500	Safefree (PL_savestack);
531	#if PERL_VERSION < 9	501	#if !PERL_VERSION_ATLEAST (5,9,0)
532	Safefree (PL_retstack);	502	Safefree (PL_retstack);
533	#endif	503	#endif
534	}	504	}
535		505
536	static void	506	static void
537	setup_coro (struct coro *coro)	507	setup_coro (struct coro *coro)
538	{	508	{
539	/*	509	/*
540	* emulate part of the perl startup here.	510	* emulate part of the perl startup here.
541	*/	511	*/
542	dTHX;
543	dSP;
544	UNOP myop;
545	SV sub_init = (SV )get_cv (SUB_INIT, FALSE);
546		512
547	coro_init_stacks (aTHX);	513	coro_init_stacks ();
548	/PL_curcop = 0;/	514
549	/PL_in_eval = PL_in_eval;/ /* inherit */	515	PL_curcop = &PL_compiling;
		516	PL_in_eval = EVAL_NULL;
		517	PL_curpm = 0;
		518	PL_localizing = 0;
		519	PL_dirty = 0;
		520	PL_restartop = 0;
		521
		522	{
		523	dSP;
		524	LOGOP myop;
		525
550	SvREFCNT_dec (GvAV (PL_defgv));	526	SvREFCNT_dec (GvAV (PL_defgv));
551	GvAV (PL_defgv) = coro->args; coro->args = 0;	527	GvAV (PL_defgv) = coro->args; coro->args = 0;
552		528
553	SPAGAIN;
554
555	Zero (&myop, 1, UNOP);	529	Zero (&myop, 1, LOGOP);
556	myop.op_next = Nullop;	530	myop.op_next = Nullop;
557	myop.op_flags = OPf_WANT_VOID;	531	myop.op_flags = OPf_WANT_VOID;
558		532
		533	PUSHMARK (SP);
		534	XPUSHs ((SV *)get_cv ("Coro::State::_coro_init", FALSE));
		535	PUTBACK;
559	PL_op = (OP *)&myop;	536	PL_op = (OP *)&myop;
560
561	PUSHMARK(SP);
562	XPUSHs (sub_init);
563	PUTBACK;
564	PL_op = PL_ppaddr[OP_ENTERSUB](aTHX);	537	PL_op = PL_ppaddr[OP_ENTERSUB](aTHX);
565	SPAGAIN;	538	SPAGAIN;
		539	}
566		540
567	ENTER; /* necessary e.g. for dounwind */	541	ENTER; /* necessary e.g. for dounwind */
568	}	542	}
569		543
570	static void	544	static void
571	transfer_tail ()	545	free_coro_mortal ()
572	{	546	{
573	if (coro_mortal)	547	if (coro_mortal)
574	{	548	{
575	SvREFCNT_dec (coro_mortal);	549	SvREFCNT_dec (coro_mortal);
576	coro_mortal = 0;	550	coro_mortal = 0;
577	}	551	}
		552	}
578		553
		554	/* inject a fake call to Coro::State::_cctx_init into the execution */
		555	static void NOINLINE
		556	prepare_cctx (coro_cctx *cctx)
		557	{
		558	dSP;
		559	LOGOP myop;
		560
		561	Zero (&myop, 1, LOGOP);
		562	myop.op_next = PL_op;
		563	myop.op_flags = OPf_WANT_VOID \| OPf_STACKED;
		564
		565	PUSHMARK (SP);
		566	EXTEND (SP, 2);
		567	PUSHs (sv_2mortal (newSViv (PTR2IV (cctx))));
		568	PUSHs ((SV *)get_cv ("Coro::State::_cctx_init", FALSE));
		569	PUTBACK;
		570	PL_op = (OP *)&myop;
		571	PL_op = PL_ppaddr[OP_ENTERSUB](aTHX);
		572	SPAGAIN;
		573	}
		574
		575	static void
		576	coro_run (void *arg)
		577	{
		578	/* coro_run is the alternative tail of transfer(), so unlock here. */
579	UNLOCK;	579	UNLOCK;
580	}
581		580
582	static void
583	coro_run (void *arg)
584	{
585	/*	581	/*
586	* this is a _very_ stripped down perl interpreter ;)	582	* this is a _very_ stripped down perl interpreter ;)
587	*/	583	*/
588	dTHX;
589
590	transfer_tail ();
591
592	PL_top_env = &PL_start_env;	584	PL_top_env = &PL_start_env;
		585
		586	/* inject call to cctx_init */
		587	prepare_cctx ((coro_cctx *)arg);
		588
		589	/* somebody will hit me for both perl_run and PL_restartop */
593	PL_restartop = PL_op;	590	PL_restartop = PL_op;
594	/* somebody will hit me for both perl_run and PL_restart_top */	591	perl_run (PL_curinterp);
595	perl_run (aTHX_ PERL_GET_CONTEXT);
596		592
		593	fputs ("FATAL: C coroutine fell over the edge of the world, aborting. Did you call exit in a coroutine?\n", stderr);
597	abort ();	594	abort ();
598	}	595	}
599		596
600	static coro_stack *	597	static coro_cctx *
601	stack_new ()	598	cctx_new ()
602	{	599	{
603	coro_stack *stack;	600	coro_cctx *cctx;
604		601
		602	++cctx_count;
		603
605	New (0, stack, 1, coro_stack);	604	Newz (0, cctx, 1, coro_cctx);
606		605
607	#if HAVE_MMAP	606	#if HAVE_MMAP
608		607
609	stack->ssize = ((STACKSIZE * sizeof (long) + PAGESIZE - 1) / PAGESIZE + STACKGUARD) * PAGESIZE; /* mmap should do allocate-on-write for us */	608	cctx->ssize = ((STACKSIZE * sizeof (long) + PAGESIZE - 1) / PAGESIZE + STACKGUARD) * PAGESIZE;
		609	/* mmap supposedly does allocate-on-write for us */
610	stack->sptr = mmap (0, stack->ssize, PROT_EXEC\|PROT_READ\|PROT_WRITE, MAP_PRIVATE\|MAP_ANONYMOUS, 0, 0);	610	cctx->sptr = mmap (0, cctx->ssize, PROT_EXEC\|PROT_READ\|PROT_WRITE, MAP_PRIVATE\|MAP_ANONYMOUS, 0, 0);
611		611
612	if (stack->sptr == (void *)-1)	612	if (cctx->sptr == (void *)-1)
613	{	613	{
614	fprintf (stderr, "FATAL: unable to mmap stack for coroutine\n");	614	perror ("FATAL: unable to mmap stack for coroutine");
615	_exit (EXIT_FAILURE);	615	_exit (EXIT_FAILURE);
616	}	616	}
617		617
		618	# if STACKGUARD
618	mprotect (stack->sptr, STACKGUARD * PAGESIZE, PROT_NONE);	619	mprotect (cctx->sptr, STACKGUARD * PAGESIZE, PROT_NONE);
		620	# endif
619		621
620	#else	622	#else
621		623
622	stack->ssize = STACKSIZE * (long)sizeof (long);	624	cctx->ssize = STACKSIZE * (long)sizeof (long);
623	New (0, stack->sptr, STACKSIZE, long);	625	New (0, cctx->sptr, STACKSIZE, long);
624		626
625	if (!stack->sptr)	627	if (!cctx->sptr)
626	{	628	{
627	fprintf (stderr, "FATAL: unable to malloc stack for coroutine\n");	629	perror ("FATAL: unable to malloc stack for coroutine");
628	_exit (EXIT_FAILURE);	630	_exit (EXIT_FAILURE);
629	}	631	}
630		632
631	#endif	633	#endif
632		634
		635	#if USE_VALGRIND
		636	cctx->valgrind_id = VALGRIND_STACK_REGISTER (
		637	STACKGUARD * PAGESIZE + (char *)cctx->sptr,
		638	cctx->ssize + (char *)cctx->sptr
		639	);
		640	#endif
		641
633	coro_create (&stack->cctx, coro_run, 0, stack->sptr, stack->ssize);	642	coro_create (&cctx->cctx, coro_run, (void *)cctx, cctx->sptr, cctx->ssize);
634		643
635	return stack;	644	return cctx;
636	}	645	}
637		646
638	static void	647	static void
639	stack_free (coro_stack *stack)	648	cctx_destroy (coro_cctx *cctx)
640	{	649	{
641	if (!stack \|\| stack == main_stack)	650	if (!cctx)
642	return;	651	return;
643		652
		653	--cctx_count;
		654
		655	#if USE_VALGRIND
		656	VALGRIND_STACK_DEREGISTER (cctx->valgrind_id);
		657	#endif
		658
644	#if HAVE_MMAP	659	#if HAVE_MMAP
645	munmap (stack->sptr, stack->ssize);	660	munmap (cctx->sptr, cctx->ssize);
646	#else	661	#else
647	Safefree (stack->sptr);	662	Safefree (cctx->sptr);
648	#endif	663	#endif
649		664
650	Safefree (stack);	665	Safefree (cctx);
651	}	666	}
652		667
653	static coro_stack *stack_first;
654
655	static coro_stack *	668	static coro_cctx *
656	stack_get ()	669	cctx_get ()
657	{	670	{
658	coro_stack *stack;	671	coro_cctx *cctx;
659		672
660	if (stack_first)	673	if (cctx_first)
661	{	674	{
662	stack = stack_first;	675	cctx = cctx_first;
663	stack_first = stack->next;	676	cctx_first = cctx->next;
		677	--cctx_idle;
664	}	678	}
665	else	679	else
666	{	680	{
667	stack = stack_new ();	681	cctx = cctx_new ();
668	PL_op = PL_op->op_next;	682	PL_op = PL_op->op_next;
669	}	683	}
670		684
671	return stack;	685	return cctx;
672	}	686	}
673		687
674	static void	688	static void
675	stack_put (coro_stack *stack)	689	cctx_put (coro_cctx *cctx)
676	{	690	{
677	stack->next = stack_first;	691	/* free another cctx if overlimit */
678	stack_first = stack;	692	if (cctx_idle >= MAX_IDLE_CCTX)
		693	{
		694	coro_cctx *first = cctx_first;
		695	cctx_first = first->next;
		696	--cctx_idle;
		697
		698	assert (!first->inuse);
		699	cctx_destroy (first);
		700	}
		701
		702	++cctx_idle;
		703	cctx->next = cctx_first;
		704	cctx_first = cctx;
679	}	705	}
680		706
681	/* never call directly, always through the coro_state_transfer global variable */	707	/* never call directly, always through the coro_state_transfer global variable */
682	static void	708	static void NOINLINE
683	transfer_impl (pTHX_ struct coro prev, struct coro next, int flags)	709	transfer (struct coro prev, struct coro next)
684	{	710	{
685	dSTACKLEVEL;	711	dSTACKLEVEL;
686		712
687	/* sometimes transfer is only called to set idle_sp */	713	/* sometimes transfer is only called to set idle_sp */
688	if (!prev->stack->idle_sp)	714	if (!next)
689	prev->stack->idle_sp = stacklevel;	715	{
690		716	((coro_cctx *)prev)->idle_sp = STACKLEVEL;
691	LOCK;	717	assert (((coro_cctx )prev)->top_env = PL_top_env); / just for the side effetc when assert is enabled */
692		718	}
693	if (prev != next)	719	else if (prev != next)
694	{	720	{
695	coro_stack *prev_stack = prev->stack;	721	coro_cctx *prev__cctx;
696		722
697	/* possibly "free" the stack */	723	if (prev->flags & CF_NEW)
698	if (0 && prev_stack->idle_sp == stacklevel)
699	{	724	{
700	stack_put (prev_stack);	725	/* create a new empty context */
701	prev->stack = 0;	726	Newz (0, prev->cctx, 1, coro_cctx);
		727	prev->cctx->inuse = 1;
		728	prev->flags &= ~CF_NEW;
		729	prev->flags \|= CF_RUNNING;
702	}	730	}
703		731
704	if (next->mainstack)	732	/TODO: must not croak here /
		733	if (!prev->flags & CF_RUNNING)
		734	croak ("Coro::State::transfer called with non-running prev Coro::State, but can only transfer from running states");
		735
		736	if (next->flags & CF_RUNNING)
		737	croak ("Coro::State::transfer called with running next Coro::State, but can only transfer to inactive states");
		738
		739	prev->flags &= ~CF_RUNNING;
		740	next->flags \|= CF_RUNNING;
		741
		742	LOCK;
		743
		744	if (next->flags & CF_NEW)
705	{	745	{
706	/* coroutine already started */	746	/* need to start coroutine */
707	SAVE (prev, flags);	747	next->flags &= ~CF_NEW;
708	LOAD (next);	748	/* first get rid of the old state */
		749	save_perl (prev);
		750	/* setup coroutine call */
		751	setup_coro (next);
		752	/* need a new stack */
		753	assert (!next->cctx);
709	}	754	}
710	else	755	else
711	{	756	{
712	/* need to start coroutine */	757	/* coroutine already started */
713	/* first get rid of the old state */	758	save_perl (prev);
714	SAVE (prev, -1);	759	load_perl (next);
715	/* setup coroutine call */
716	setup_coro (next);
717	/* need to change stack from main_stack to real one */
718	next->stack = 0;
719	}	760	}
720		761
		762	prev__cctx = prev->cctx;
		763
		764	/* possibly "free" the cctx */
		765	if (prev__cctx->idle_sp == STACKLEVEL)
		766	{
		767	/* I assume that STACKLEVEL is a stronger indicator than PL_top_env changes */
		768	assert (PL_top_env == prev__cctx->top_env);
		769
		770	prev->cctx = 0;
		771
		772	cctx_put (prev__cctx);
		773	prev__cctx->inuse = 0;
		774	}
		775
721	if (!next->stack)	776	if (!next->cctx)
722	next->stack = stack_get ();	777	{
		778	next->cctx = cctx_get ();
		779	assert (!next->cctx->inuse);
		780	next->cctx->inuse = 1;
		781	}
723		782
724	if (prev_stack != next->stack)	783	if (prev__cctx != next->cctx)
		784	{
		785	prev__cctx->top_env = PL_top_env;
		786	PL_top_env = next->cctx->top_env;
725	coro_transfer (&prev_stack->cctx, &next->stack->cctx);	787	coro_transfer (&prev__cctx->cctx, &next->cctx->cctx);
		788	}
		789
		790	free_coro_mortal ();
		791
		792	UNLOCK;
726	}	793	}
727
728	transfer_tail ();
729	}	794	}
730		795
731	/* use this function pointer to call the above function */	796	struct transfer_args
732	/* this is done to increase chances of the compiler not inlining the call */	797	{
733	void (coro_state_transfer)(pTHX_ struct coro prev, struct coro *next, int flags) = transfer_impl;	798	struct coro prev, next;
		799	};
		800
		801	#define TRANSFER(ta) transfer ((ta).prev, (ta).next)
734		802
735	static void	803	static void
736	coro_state_destroy (struct coro *coro)	804	coro_state_destroy (struct coro *coro)
737	{	805	{
738	if (coro->refcnt--)	806	if (coro->refcnt--)
739	return;	807	return;
740		808
741	if (coro->mainstack && coro->mainstack != main_mainstack)	809	if (coro->mainstack && coro->mainstack != main_mainstack)
742	{	810	{
743	struct coro temp;	811	struct coro temp;
		812	Zero (&temp, 1, struct coro);
		813	temp.save = CORO_SAVE_ALL;
744		814
745	SAVE (aTHX_ (&temp), TRANSFER_SAVE_ALL);	815	if (coro->flags & CF_RUNNING)
746	LOAD (aTHX_ coro);	816	croak ("FATAL: tried to destroy currently running coroutine");
747		817
		818	save_perl (&temp);
		819	load_perl (coro);
		820
748	destroy_stacks (aTHX);	821	coro_destroy_stacks ();
749		822
750	LOAD ((&temp)); /* this will get rid of defsv etc.. */	823	load_perl (&temp); /* this will get rid of defsv etc.. */
751		824
752	coro->mainstack = 0;	825	coro->mainstack = 0;
753	}	826	}
754		827
755	stack_free (coro->stack);	828	cctx_destroy (coro->cctx);
756	SvREFCNT_dec (coro->args);	829	SvREFCNT_dec (coro->args);
757	Safefree (coro);	830	Safefree (coro);
758	}	831	}
759		832
760	static int	833	static int
761	coro_state_clear (SV sv, MAGIC mg)	834	coro_state_clear (pTHX_ SV sv, MAGIC mg)
762	{	835	{
763	struct coro coro = (struct coro )mg->mg_ptr;	836	struct coro coro = (struct coro )mg->mg_ptr;
764	mg->mg_ptr = 0;	837	mg->mg_ptr = 0;
765		838
766	coro_state_destroy (coro);	839	coro_state_destroy (coro);
767		840
768	return 0;	841	return 0;
769	}	842	}
770		843
771	static int	844	static int
772	coro_state_dup (MAGIC mg, CLONE_PARAMS params)	845	coro_state_dup (pTHX_ MAGIC mg, CLONE_PARAMS params)
773	{	846	{
774	struct coro coro = (struct coro )mg->mg_ptr;	847	struct coro coro = (struct coro )mg->mg_ptr;
775		848
776	++coro->refcnt;	849	++coro->refcnt;
777		850
778	return 0;	851	return 0;
779	}	852	}
780		853
781	static MGVTBL coro_state_vtbl = { 0, 0, 0, 0, coro_state_clear, 0, coro_state_dup, 0 };	854	static MGVTBL coro_state_vtbl = {
		855	0, 0, 0, 0,
		856	coro_state_clear,
		857	0,
		858	#ifdef MGf_DUP
		859	coro_state_dup,
		860	#else
		861	# define MGf_DUP 0
		862	#endif
		863	};
782		864
783	static struct coro *	865	static struct coro *
784	SvSTATE (SV *coro)	866	SvSTATE (SV *coro)
785	{	867	{
786	HV *stash;	868	HV *stash;
…		…
801	assert (mg->mg_type == PERL_MAGIC_ext);	883	assert (mg->mg_type == PERL_MAGIC_ext);
802	return (struct coro *)mg->mg_ptr;	884	return (struct coro *)mg->mg_ptr;
803	}	885	}
804		886
805	static void	887	static void
		888	prepare_transfer (struct transfer_args ta, SV prev_sv, SV *next_sv)
		889	{
		890	ta->prev = SvSTATE (prev_sv);
		891	ta->next = SvSTATE (next_sv);
		892	}
		893
		894	static void
806	api_transfer (pTHX_ SV prev, SV next, int flags)	895	api_transfer (SV prev_sv, SV next_sv)
807	{	896	{
808	coro_state_transfer (aTHX_ SvSTATE (prev), SvSTATE (next), flags);	897	struct transfer_args ta;
		898
		899	prepare_transfer (&ta, prev_sv, next_sv);
		900	TRANSFER (ta);
		901	}
		902
		903	static int
		904	api_save (SV *coro_sv, int new_save)
		905	{
		906	struct coro *coro = SvSTATE (coro_sv);
		907	int old_save = coro->save;
		908
		909	if (new_save >= 0)
		910	coro->save = new_save;
		911
		912	return old_save;
809	}	913	}
810		914
811	/ Coro ******************************************************************/	915	/ Coro ******************************************************************/
812		916
813	#define PRIO_MAX 3	917	#define PRIO_MAX 3
…		…
816	#define PRIO_LOW -1	920	#define PRIO_LOW -1
817	#define PRIO_IDLE -3	921	#define PRIO_IDLE -3
818	#define PRIO_MIN -4	922	#define PRIO_MIN -4
819		923
820	/* for Coro.pm */	924	/* for Coro.pm */
821	static GV coro_current, coro_idle;	925	static SV *coro_current;
822	static AV *coro_ready [PRIO_MAX-PRIO_MIN+1];	926	static AV *coro_ready [PRIO_MAX-PRIO_MIN+1];
823	static int coro_nready;	927	static int coro_nready;
824		928
825	static void	929	static void
826	coro_enq (pTHX_ SV *sv)	930	coro_enq (SV *coro_sv)
827	{	931	{
828	int prio;
829
830	if (SvTYPE (sv) != SVt_PVHV)
831	croak ("Coro::ready tried to enqueue something that is not a coroutine");
832
833	prio = SvSTATE (sv)->prio;
834
835	av_push (coro_ready [prio - PRIO_MIN], sv);	932	av_push (coro_ready [SvSTATE (coro_sv)->prio - PRIO_MIN], coro_sv);
836	coro_nready++;	933	coro_nready++;
837	}	934	}
838		935
839	static SV *	936	static SV *
840	coro_deq (pTHX_ int min_prio)	937	coro_deq (int min_prio)
841	{	938	{
842	int prio = PRIO_MAX - PRIO_MIN;	939	int prio = PRIO_MAX - PRIO_MIN;
843		940
844	min_prio -= PRIO_MIN;	941	min_prio -= PRIO_MIN;
845	if (min_prio < 0)	942	if (min_prio < 0)
…		…
853	}	950	}
854		951
855	return 0;	952	return 0;
856	}	953	}
857		954
858	static void	955	static int
859	api_ready (SV *coro)	956	api_ready (SV *coro_sv)
860	{	957	{
861	dTHX;	958	struct coro *coro;
862		959
863	if (SvROK (coro))	960	if (SvROK (coro_sv))
864	coro = SvRV (coro);	961	coro_sv = SvRV (coro_sv);
		962
		963	coro = SvSTATE (coro_sv);
		964
		965	if (coro->flags & CF_READY)
		966	return 0;
		967
		968	#if 0 /* this is actually harmless */
		969	if (coro->flags & CF_RUNNING)
		970	croak ("Coro::ready called on currently running coroutine");
		971	#endif
		972
		973	coro->flags \|= CF_READY;
865		974
866	LOCK;	975	LOCK;
867	coro_enq (aTHX_ SvREFCNT_inc (coro));	976	coro_enq (SvREFCNT_inc (coro_sv));
868	UNLOCK;	977	UNLOCK;
869	}
870		978
		979	return 1;
		980	}
		981
871	static void	982	static int
872	api_schedule (void)	983	api_is_ready (SV *coro_sv)
873	{	984	{
874	dTHX;	985	return !!SvSTATE (coro_sv)->flags & CF_READY;
		986	}
875		987
		988	static void
		989	prepare_schedule (struct transfer_args *ta)
		990	{
876	SV prev, next;	991	SV prev, next;
877	SV *current = GvSV (coro_current);
878		992
879	for (;;)	993	for (;;)
880	{	994	{
881	LOCK;	995	LOCK;
882
883	next = coro_deq (aTHX_ PRIO_MIN);	996	next = coro_deq (PRIO_MIN);
		997	UNLOCK;
884		998
885	if (next)	999	if (next)
886	break;	1000	break;
887		1001
888	UNLOCK;
889
890	{	1002	{
891	dSP;	1003	dSP;
892		1004
893	ENTER;	1005	ENTER;
894	SAVETMPS;	1006	SAVETMPS;
895		1007
896	PUSHMARK (SP);	1008	PUSHMARK (SP);
897	PUTBACK;	1009	PUTBACK;
898	call_sv (GvSV (coro_idle), G_DISCARD);	1010	call_sv (get_sv ("Coro::idle", FALSE), G_DISCARD);
899		1011
900	FREETMPS;	1012	FREETMPS;
901	LEAVE;	1013	LEAVE;
902	}	1014	}
903	}	1015	}
904		1016
905	prev = SvRV (current);	1017	prev = SvRV (coro_current);
906	SvRV (current) = next;	1018	SvRV_set (coro_current, next);
907		1019
908	/* free this only after the transfer */	1020	/* free this only after the transfer */
		1021	LOCK;
		1022	free_coro_mortal ();
		1023	UNLOCK;
909	coro_mortal = prev;	1024	coro_mortal = prev;
910		1025
911	UNLOCK;	1026	assert (!SvROK(prev));//D
		1027	assert (!SvROK(next));//D
912		1028
913	coro_state_transfer (aTHX_ SvSTATE (prev), SvSTATE (next), TRANSFER_SAVE_ALL);	1029	ta->prev = SvSTATE (prev);
914	}	1030	ta->next = SvSTATE (next);
915		1031
916	static int coro_cede_self;	1032	assert (ta->next->flags & CF_READY);
		1033	ta->next->flags &= ~CF_READY;
		1034	}
		1035
		1036	static void
		1037	prepare_cede (struct transfer_args *ta)
		1038	{
		1039	api_ready (coro_current);
		1040
		1041	prepare_schedule (ta);
		1042	}
		1043
		1044	static void
		1045	api_schedule (void)
		1046	{
		1047	struct transfer_args ta;
		1048
		1049	prepare_schedule (&ta);
		1050	TRANSFER (ta);
		1051	}
917		1052
918	static void	1053	static void
919	api_cede (void)	1054	api_cede (void)
920	{	1055	{
921	dTHX;	1056	struct transfer_args ta;
922	SV *current = SvREFCNT_inc (SvRV (GvSV (coro_current)));
923		1057
924	LOCK;	1058	prepare_cede (&ta);
925		1059	TRANSFER (ta);
926	if (coro_cede_self)
927	{
928	AV *runqueue = coro_ready [PRIO_MAX - PRIO_MIN];
929	av_unshift (runqueue, 1);
930	av_store (runqueue, 0, current);
931	coro_nready++;
932	coro_cede_self = 0;
933	}
934	else
935	coro_enq (aTHX_ current);
936
937	UNLOCK;
938
939	api_schedule ();
940	}	1060	}
941		1061
942	MODULE = Coro::State PACKAGE = Coro::State	1062	MODULE = Coro::State PACKAGE = Coro::State
943		1063
944	PROTOTYPES: DISABLE	1064	PROTOTYPES: DISABLE
…		…
950	#endif	1070	#endif
951	BOOT_PAGESIZE;	1071	BOOT_PAGESIZE;
952		1072
953	coro_state_stash = gv_stashpv ("Coro::State", TRUE);	1073	coro_state_stash = gv_stashpv ("Coro::State", TRUE);
954		1074
955	newCONSTSUB (coro_state_stash, "SAVE_DEFAV", newSViv (TRANSFER_SAVE_DEFAV));	1075	newCONSTSUB (coro_state_stash, "SAVE_DEFAV", newSViv (CORO_SAVE_DEFAV));
956	newCONSTSUB (coro_state_stash, "SAVE_DEFSV", newSViv (TRANSFER_SAVE_DEFSV));	1076	newCONSTSUB (coro_state_stash, "SAVE_DEFSV", newSViv (CORO_SAVE_DEFSV));
957	newCONSTSUB (coro_state_stash, "SAVE_ERRSV", newSViv (TRANSFER_SAVE_ERRSV));	1077	newCONSTSUB (coro_state_stash, "SAVE_ERRSV", newSViv (CORO_SAVE_ERRSV));
		1078	newCONSTSUB (coro_state_stash, "SAVE_IRSSV", newSViv (CORO_SAVE_IRSSV));
		1079	newCONSTSUB (coro_state_stash, "SAVE_ALL", newSViv (CORO_SAVE_ALL));
958		1080
959	main_mainstack = PL_mainstack;	1081	main_mainstack = PL_mainstack;
960		1082
961	coroapi.ver = CORO_API_VERSION;	1083	coroapi.ver = CORO_API_VERSION;
962	coroapi.transfer = api_transfer;	1084	coroapi.transfer = api_transfer;
963
964	Newz (0, main_stack, 1, coro_stack);
965	main_stack->idle_sp = (void *)-1;
966		1085
967	assert (("PRIO_NORMAL must be 0", !PRIO_NORMAL));	1086	assert (("PRIO_NORMAL must be 0", !PRIO_NORMAL));
968	}	1087	}
969		1088
970	SV *	1089	SV *
…		…
975	HV *hv;	1094	HV *hv;
976	int i;	1095	int i;
977		1096
978	Newz (0, coro, 1, struct coro);	1097	Newz (0, coro, 1, struct coro);
979	coro->args = newAV ();	1098	coro->args = newAV ();
		1099	coro->save = CORO_SAVE_ALL;
		1100	coro->flags = CF_NEW;
980		1101
981	hv = newHV ();	1102	hv = newHV ();
982	sv_magicext ((SV )hv, 0, PERL_MAGIC_ext, &coro_state_vtbl, (char )coro, 0)->mg_flags \|= MGf_DUP;	1103	sv_magicext ((SV )hv, 0, PERL_MAGIC_ext, &coro_state_vtbl, (char )coro, 0)->mg_flags \|= MGf_DUP;
983	RETVAL = sv_bless (newRV_noinc ((SV *)hv), gv_stashpv (klass, 1));	1104	RETVAL = sv_bless (newRV_noinc ((SV *)hv), gv_stashpv (klass, 1));
984		1105
985	av_push (coro->args, newSVsv (RETVAL));
986	for (i = 1; i < items; i++)	1106	for (i = 1; i < items; i++)
987	av_push (coro->args, newSVsv (ST (i)));	1107	av_push (coro->args, newSVsv (ST (i)));
988
989	coro->stack = main_stack;
990	/coro->mainstack = 0; //actual work is done inside transfer /
991	/coro->stack = 0;/
992	}	1108	}
993	OUTPUT:	1109	OUTPUT:
994	RETVAL	1110	RETVAL
995		1111
		1112	int
		1113	save (SV *coro, int new_save = -1)
		1114	CODE:
		1115	RETVAL = api_save (coro, new_save);
		1116	OUTPUT:
		1117	RETVAL
		1118
996	void	1119	void
997	transfer (prev, next, flags)	1120	_set_stacklevel (...)
998	SV *prev	1121	ALIAS:
999	SV *next	1122	Coro::State::transfer = 1
1000	int flags	1123	Coro::schedule = 2
		1124	Coro::cede = 3
1001	CODE:	1125	CODE:
1002	PUTBACK;
1003	coro_state_transfer (aTHX_ SvSTATE (prev), SvSTATE (next), flags);
1004	SPAGAIN;
1005
1006	int
1007	prio (Coro::State coro, int newprio = 0)
1008	ALIAS:
1009	nice = 1
1010	CODE:
1011	{	1126	{
1012	RETVAL = coro->prio;	1127	struct transfer_args ta;
1013		1128
1014	if (items > 1)	1129	switch (ix)
1015	{	1130	{
		1131	case 0:
		1132	ta.prev = (struct coro )INT2PTR (coro_cctx , SvIV (ST (0)));
		1133	ta.next = 0;
		1134	break;
		1135
		1136	case 1:
1016	if (ix)	1137	if (items != 2)
1017	newprio += coro->prio;	1138	croak ("Coro::State::transfer (prev,next) expects two arguments, not %d", items);
1018		1139
1019	if (newprio < PRIO_MIN) newprio = PRIO_MIN;	1140	prepare_transfer (&ta, ST (0), ST (1));
1020	if (newprio > PRIO_MAX) newprio = PRIO_MAX;	1141	break;
1021		1142
1022	coro->prio = newprio;	1143	case 2:
		1144	prepare_schedule (&ta);
		1145	break;
		1146
		1147	case 3:
		1148	prepare_cede (&ta);
		1149	break;
1023	}	1150	}
1024	}
1025		1151
1026	void	1152	TRANSFER (ta);
1027	_clear_idle_sp (Coro::State self)	1153	}
1028	CODE:
1029	self->stack->idle_sp = 0;
1030		1154
1031	void	1155	void
1032	_clone_state_from (SV dst, SV src)	1156	_clone_state_from (SV dst, SV src)
1033	CODE:	1157	CODE:
1034	{	1158	{
…		…
1045	int code	1169	int code
1046	PROTOTYPE: $	1170	PROTOTYPE: $
1047	CODE:	1171	CODE:
1048	_exit (code);	1172	_exit (code);
1049		1173
1050	MODULE = Coro::State PACKAGE = Coro::Cont	1174	int
		1175	cctx_count ()
		1176	CODE:
		1177	RETVAL = cctx_count;
		1178	OUTPUT:
		1179	RETVAL
1051		1180
1052	void	1181	int
1053	yield (...)	1182	cctx_idle ()
1054	PROTOTYPE: @	1183	CODE:
1055	CODE:	1184	RETVAL = cctx_idle;
1056	{	1185	OUTPUT:
1057	SV *yieldstack;	1186	RETVAL
1058	SV *sv;
1059	AV *defav = GvAV (PL_defgv);
1060	struct coro prev, next;
1061
1062	yieldstack = *hv_fetch (
1063	(HV *)SvRV (GvSV (coro_current)),
1064	"yieldstack", sizeof ("yieldstack") - 1,
1065	0
1066	);
1067
1068	/* set up @_ -- ugly */
1069	av_clear (defav);
1070	av_fill (defav, items - 1);
1071	while (items--)
1072	av_store (defav, items, SvREFCNT_inc (ST(items)));
1073
1074	sv = av_pop ((AV *)SvRV (yieldstack));
1075	prev = SvSTATE (av_fetch ((AV )SvRV (sv), 0, 0));
1076	next = SvSTATE (av_fetch ((AV )SvRV (sv), 1, 0));
1077	SvREFCNT_dec (sv);
1078
1079	coro_state_transfer (aTHX_ prev, next, 0);
1080	}
1081		1187
1082	MODULE = Coro::State PACKAGE = Coro	1188	MODULE = Coro::State PACKAGE = Coro
1083		1189
1084	BOOT:	1190	BOOT:
1085	{	1191	{
…		…
1092	newCONSTSUB (coro_stash, "PRIO_NORMAL", newSViv (PRIO_NORMAL));	1198	newCONSTSUB (coro_stash, "PRIO_NORMAL", newSViv (PRIO_NORMAL));
1093	newCONSTSUB (coro_stash, "PRIO_LOW", newSViv (PRIO_LOW));	1199	newCONSTSUB (coro_stash, "PRIO_LOW", newSViv (PRIO_LOW));
1094	newCONSTSUB (coro_stash, "PRIO_IDLE", newSViv (PRIO_IDLE));	1200	newCONSTSUB (coro_stash, "PRIO_IDLE", newSViv (PRIO_IDLE));
1095	newCONSTSUB (coro_stash, "PRIO_MIN", newSViv (PRIO_MIN));	1201	newCONSTSUB (coro_stash, "PRIO_MIN", newSViv (PRIO_MIN));
1096		1202
1097	coro_current = gv_fetchpv ("Coro::current", TRUE, SVt_PV);	1203	coro_current = get_sv ("Coro::current", FALSE);
1098	coro_idle = gv_fetchpv ("Coro::idle" , TRUE, SVt_PV);	1204	SvREADONLY_on (coro_current);
1099		1205
1100	for (i = PRIO_MAX - PRIO_MIN + 1; i--; )	1206	for (i = PRIO_MAX - PRIO_MIN + 1; i--; )
1101	coro_ready[i] = newAV ();	1207	coro_ready[i] = newAV ();
1102		1208
1103	{	1209	{
1104	SV *sv = perl_get_sv("Coro::API", 1);	1210	SV *sv = perl_get_sv("Coro::API", 1);
1105		1211
1106	coroapi.schedule = api_schedule;	1212	coroapi.schedule = api_schedule;
		1213	coroapi.save = api_save;
1107	coroapi.cede = api_cede;	1214	coroapi.cede = api_cede;
1108	coroapi.ready = api_ready;	1215	coroapi.ready = api_ready;
		1216	coroapi.is_ready = api_is_ready;
1109	coroapi.nready = &coro_nready;	1217	coroapi.nready = &coro_nready;
1110	coroapi.current = coro_current;	1218	coroapi.current = coro_current;
1111		1219
1112	GCoroAPI = &coroapi;	1220	GCoroAPI = &coroapi;
1113	sv_setiv (sv, (IV)&coroapi);	1221	sv_setiv (sv, (IV)&coroapi);
1114	SvREADONLY_on (sv);	1222	SvREADONLY_on (sv);
1115	}	1223	}
1116	}	1224	}
1117		1225
1118	void	1226	void
		1227	_set_current (SV *current)
		1228	PROTOTYPE: $
		1229	CODE:
		1230	SvREFCNT_dec (SvRV (coro_current));
		1231	SvRV_set (coro_current, SvREFCNT_inc (SvRV (current)));
		1232
		1233	int
		1234	prio (Coro::State coro, int newprio = 0)
		1235	ALIAS:
		1236	nice = 1
		1237	CODE:
		1238	{
		1239	RETVAL = coro->prio;
		1240
		1241	if (items > 1)
		1242	{
		1243	if (ix)
		1244	newprio += coro->prio;
		1245
		1246	if (newprio < PRIO_MIN) newprio = PRIO_MIN;
		1247	if (newprio > PRIO_MAX) newprio = PRIO_MAX;
		1248
		1249	coro->prio = newprio;
		1250	}
		1251	}
		1252
		1253	SV *
1119	ready (SV *self)	1254	ready (SV *self)
1120	PROTOTYPE: $	1255	PROTOTYPE: $
1121	CODE:	1256	CODE:
1122	api_ready (self);	1257	RETVAL = boolSV (api_ready (self));
		1258	OUTPUT:
		1259	RETVAL
		1260
		1261	SV *
		1262	is_ready (SV *self)
		1263	PROTOTYPE: $
		1264	CODE:
		1265	RETVAL = boolSV (api_is_ready (self));
		1266	OUTPUT:
		1267	RETVAL
1123		1268
1124	int	1269	int
1125	nready (...)	1270	nready (...)
1126	PROTOTYPE:	1271	PROTOTYPE:
1127	CODE:	1272	CODE:
1128	RETVAL = coro_nready;	1273	RETVAL = coro_nready;
1129	OUTPUT:	1274	OUTPUT:
1130	RETVAL	1275	RETVAL
1131		1276
1132	void
1133	schedule (...)
1134	PROTOTYPE:
1135	CODE:
1136	api_schedule ();
1137
1138	void
1139	_set_cede_self ()
1140	CODE:
1141	coro_cede_self = 1;
1142
1143	void
1144	cede (...)
1145	PROTOTYPE:
1146	CODE:
1147	api_cede ();
1148
1149	MODULE = Coro::State PACKAGE = Coro::AIO	1277	MODULE = Coro::State PACKAGE = Coro::AIO
1150		1278
1151	SV *	1279	SV *
1152	_get_state ()	1280	_get_state ()
1153	CODE:	1281	CODE:
1154	{	1282	{
1155	struct {	1283	struct io_state *data;
1156	int errorno;
1157	int laststype;
1158	int laststatval;
1159	Stat_t statcache;
1160	} data;
1161		1284
		1285	RETVAL = newSV (sizeof (struct io_state));
		1286	data = (struct io_state *)SvPVX (RETVAL);
		1287	SvCUR_set (RETVAL, sizeof (struct io_state));
		1288	SvPOK_only (RETVAL);
		1289
1162	data.errorno = errno;	1290	data->errorno = errno;
1163	data.laststype = PL_laststype;	1291	data->laststype = PL_laststype;
1164	data.laststatval = PL_laststatval;	1292	data->laststatval = PL_laststatval;
1165	data.statcache = PL_statcache;	1293	data->statcache = PL_statcache;
1166
1167	RETVAL = newSVpvn ((char *)&data, sizeof data);
1168	}	1294	}
1169	OUTPUT:	1295	OUTPUT:
1170	RETVAL	1296	RETVAL
1171		1297
1172	void	1298	void
1173	_set_state (char *data_)	1299	_set_state (char *data_)
1174	PROTOTYPE: $	1300	PROTOTYPE: $
1175	CODE:	1301	CODE:
1176	{	1302	{
1177	struct {	1303	struct io_state data = (void )data_;
1178	int errorno;
1179	int laststype;
1180	int laststatval;
1181	Stat_t statcache;
1182	} data = (void )data_;
1183		1304
1184	errno = data->errorno;	1305	errno = data->errorno;
1185	PL_laststype = data->laststype;	1306	PL_laststype = data->laststype;
1186	PL_laststatval = data->laststatval;	1307	PL_laststatval = data->laststatval;
1187	PL_statcache = data->statcache;	1308	PL_statcache = data->statcache;
1188	}	1309	}
		1310

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Comparing Coro/Coro/State.xs (file contents): Revision 1.91 by root, Sat Nov 25 01:14:11 2006 UTC vs. Revision 1.125 by root, Mon Dec 11 20:54:45 2006 UTC

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Comparing Coro/Coro/State.xs (file contents):
Revision 1.91 by root, Sat Nov 25 01:14:11 2006 UTC vs.
Revision 1.125 by root, Mon Dec 11 20:54:45 2006 UTC