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

Comparing Coro/Coro/State.xs (file contents):
Revision 1.103 by root, Mon Nov 27 01:33:30 2006 UTC vs.
Revision 1.128 by root, Fri Dec 22 04:22:28 2006 UTC

…		…
3	#include "EXTERN.h"	3	#include "EXTERN.h"
4	#include "perl.h"	4	#include "perl.h"
5	#include "XSUB.h"	5	#include "XSUB.h"
6		6
7	#include "patchlevel.h"	7	#include "patchlevel.h"
		8
		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
8		42
9	#define PERL_VERSION_ATLEAST(a,b,c) \	43	#define PERL_VERSION_ATLEAST(a,b,c) \
10	(PERL_REVISION > (a) \	44	(PERL_REVISION > (a) \
11	\|\| (PERL_REVISION == (a) \	45	\|\| (PERL_REVISION == (a) \
12	&& (PERL_VERSION > (b) \	46	&& (PERL_VERSION > (b) \
…		…
31	# ifndef IS_PADCONST	65	# ifndef IS_PADCONST
32	# define IS_PADCONST(v) 0	66	# define IS_PADCONST(v) 0
33	# endif	67	# endif
34	#endif	68	#endif
35		69
36	#include <stdio.h>	70	/* 5.8.7 */
37	#include <errno.h>	71	#ifndef SvRV_set
		72	# define SvRV_set(s,v) SvRV(s) = (v)
		73	#endif
38		74
39	#if !__i386 && !__x86_64 && !__powerpc && !__m68k && !__alpha && !__mips && !__sparc64	75	#if !__i386 && !__x86_64 && !__powerpc && !__m68k && !__alpha && !__mips && !__sparc64
40	# undef STACKGUARD	76	# undef STACKGUARD
41	#endif	77	#endif
42		78
43	#ifndef STACKGUARD	79	#ifndef STACKGUARD
44	# define STACKGUARD 0	80	# define STACKGUARD 0
45	#endif	81	#endif
46		82
47	#ifdef HAVE_MMAP	83	/* prefer perl internal functions over our own? */
48	# include <unistd.h>	84	#ifndef PREFER_PERL_FUNCTIONS
49	# include <sys/mman.h>	85	# define PREFER_PERL_FUNCTIONS 0
50	# ifndef MAP_ANONYMOUS
51	# ifdef MAP_ANON
52	# define MAP_ANONYMOUS MAP_ANON
53	# else
54	# undef HAVE_MMAP
55	# endif
56	# endif
57	# include <limits.h>
58	# ifndef PAGESIZE
59	# define PAGESIZE pagesize
60	# define BOOT_PAGESIZE pagesize = sysconf (_SC_PAGESIZE)
61	static long pagesize;
62	# else
63	# define BOOT_PAGESIZE
64	# endif
65	#endif	86	#endif
66		87
67	/* 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
68	* 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
69	* and should be unique. */	90	* and should be unique. */
…		…
79	#endif	100	#endif
80		101
81	#define NOINLINE attribute ((noinline))	102	#define NOINLINE attribute ((noinline))
82		103
83	#include "CoroAPI.h"	104	#include "CoroAPI.h"
84
85	#define TRANSFER_SET_STACKLEVEL 0x8bfbfbfb /* magic cookie */
86		105
87	#ifdef USE_ITHREADS	106	#ifdef USE_ITHREADS
88	static perl_mutex coro_mutex;	107	static perl_mutex coro_mutex;
89	# define LOCK do { MUTEX_LOCK (&coro_mutex); } while (0)	108	# define LOCK do { MUTEX_LOCK (&coro_mutex); } while (0)
90	# define UNLOCK do { MUTEX_UNLOCK (&coro_mutex); } while (0)	109	# define UNLOCK do { MUTEX_UNLOCK (&coro_mutex); } while (0)
91	#else	110	#else
92	# define LOCK (void)0	111	# define LOCK (void)0
93	# define UNLOCK (void)0	112	# define UNLOCK (void)0
94	#endif	113	#endif
95		114
		115	struct io_state
		116	{
		117	int errorno;
		118	I32 laststype;
		119	int laststatval;
		120	Stat_t statcache;
		121	};
		122
96	static struct CoroAPI coroapi;	123	static struct CoroAPI coroapi;
97	static AV main_mainstack; / used to differentiate between $main and others */	124	static AV main_mainstack; / used to differentiate between $main and others */
98	static HV coro_state_stash, coro_stash;	125	static HV coro_state_stash, coro_stash;
99	static SV coro_mortal; / will be freed after next transfer */	126	static SV coro_mortal; / will be freed after next transfer */
100		127
		128	static struct coro_cctx *cctx_first;
		129	static int cctx_count, cctx_idle;
		130
101	/* this is a structure representing a c-level coroutine */	131	/* this is a structure representing a c-level coroutine */
102	typedef struct coro_stack {	132	typedef struct coro_cctx {
103	struct coro_stack *next;	133	struct coro_cctx *next;
104		134
105	/* the stack */	135	/* the stack */
106	void *sptr;	136	void *sptr;
107	long ssize; /* positive == mmap, otherwise malloc */	137	long ssize; /* positive == mmap, otherwise malloc */
108		138
109	/* cpu state */	139	/* cpu state */
110	void idle_sp; / sp of top-level transfer/schedule/cede call */	140	void idle_sp; / sp of top-level transfer/schedule/cede call */
111	JMPENV *top_env;	141	JMPENV *top_env;
112	coro_context cctx;	142	coro_context cctx;
113	} coro_stack;	143
		144	int inuse;
		145
		146	#if USE_VALGRIND
		147	int valgrind_id;
		148	#endif
		149	} coro_cctx;
		150
		151	enum {
		152	CF_RUNNING = 0x0001, /* coroutine is running */
		153	CF_READY = 0x0002, /* coroutine is ready */
		154	CF_NEW = 0x0004, /* ahs never been switched to */
		155	};
114		156
115	/* this is a structure representing a perl-level coroutine */	157	/* this is a structure representing a perl-level coroutine */
116	struct coro {	158	struct coro {
117	/* the c coroutine allocated to this perl coroutine, if any */	159	/* the c coroutine allocated to this perl coroutine, if any */
118	coro_stack *stack;	160	coro_cctx *cctx;
119		161
120	/* data associated with this coroutine (initial args) */	162	/* data associated with this coroutine (initial args) */
121	AV *args;	163	AV *args;
122	int refcnt;	164	int refcnt;
		165	int save; /* CORO_SAVE flags */
		166	int flags; /* CF_ flags */
123		167
124	/* optionally saved, might be zero */	168	/* optionally saved, might be zero */
125	AV *defav;	169	AV defav; / @_ */
126	SV *defsv;	170	SV defsv; / $_ */
127	SV *errsv;	171	SV errsv; / $@ */
		172	SV irssv; / $/ */
		173	SV irssv_sv; / real $/ cache */
128		174
129	/* saved global state not related to stacks */	175	#define VAR(name,type) type name;
130	U8 dowarn;	176	# include "state.h"
131	I32 in_eval;	177	#undef VAR
132
133	/* the stacks and related info (callchain etc..) */
134	PERL_SI *curstackinfo;
135	AV *curstack;
136	AV *mainstack;
137	SV **stack_sp;
138	OP *op;
139	SV **curpad;
140	AV *comppad;
141	CV *compcv;
142	SV **stack_base;
143	SV **stack_max;
144	SV **tmps_stack;
145	I32 tmps_floor;
146	I32 tmps_ix;
147	I32 tmps_max;
148	I32 *markstack;
149	I32 *markstack_ptr;
150	I32 *markstack_max;
151	I32 *scopestack;
152	I32 scopestack_ix;
153	I32 scopestack_max;
154	ANY *savestack;
155	I32 savestack_ix;
156	I32 savestack_max;
157	OP **retstack;
158	I32 retstack_ix;
159	I32 retstack_max;
160	PMOP *curpm;
161	COP *curcop;
162		178
163	/* coro process data */	179	/* coro process data */
164	int prio;	180	int prio;
165	};	181	};
166		182
…		…
230		246
231	#define PERL_MAGIC_coro PERL_MAGIC_ext	247	#define PERL_MAGIC_coro PERL_MAGIC_ext
232		248
233	static MGVTBL vtbl_coro = {0, 0, 0, 0, coro_cv_free};	249	static MGVTBL vtbl_coro = {0, 0, 0, 0, coro_cv_free};
234		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
235	/* the next two functions merely cache the padlists */	258	/* the next two functions merely cache the padlists */
236	static void	259	static void
237	get_padlist (CV *cv)	260	get_padlist (CV *cv)
238	{	261	{
239	MAGIC mg = mg_find ((SV )cv, PERL_MAGIC_coro);	262	MAGIC *mg = CORO_MAGIC (cv);
		263	AV *av;
240		264
241	if (mg && AvFILLp ((AV *)mg->mg_obj) >= 0)	265	if (mg && AvFILLp ((av = (AV *)mg->mg_obj)) >= 0)
242	CvPADLIST (cv) = (AV )av_pop ((AV )mg->mg_obj);	266	CvPADLIST (cv) = (AV *)AvARRAY (av)[AvFILLp (av)--];
243	else	267	else
244	{	268	{
245	#if 0	269	#if PREFER_PERL_FUNCTIONS
246	/* this is probably cleaner, but also slower? */	270	/* this is probably cleaner, but also slower? */
247	CV *cp = Perl_cv_clone (cv);	271	CV *cp = Perl_cv_clone (cv);
248	CvPADLIST (cv) = CvPADLIST (cp);	272	CvPADLIST (cv) = CvPADLIST (cp);
249	CvPADLIST (cp) = 0;	273	CvPADLIST (cp) = 0;
250	SvREFCNT_dec (cp);	274	SvREFCNT_dec (cp);
…		…
255	}	279	}
256		280
257	static void	281	static void
258	put_padlist (CV *cv)	282	put_padlist (CV *cv)
259	{	283	{
260	MAGIC mg = mg_find ((SV )cv, PERL_MAGIC_coro);	284	MAGIC *mg = CORO_MAGIC (cv);
		285	AV *av;
261		286
262	if (!mg)	287	if (!mg)
263	{	288	{
264	sv_magic ((SV *)cv, 0, PERL_MAGIC_coro, 0, 0);	289	sv_magic ((SV *)cv, 0, PERL_MAGIC_coro, 0, 0);
265	mg = mg_find ((SV *)cv, PERL_MAGIC_coro);	290	mg = mg_find ((SV *)cv, PERL_MAGIC_coro);
266	mg->mg_virtual = &vtbl_coro;	291	mg->mg_virtual = &vtbl_coro;
267	mg->mg_obj = (SV *)newAV ();	292	mg->mg_obj = (SV *)newAV ();
268	}	293	}
269		294
270	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);
271	}	301	}
272		302
273	#define SB do {	303	#define SB do {
274	#define SE } while (0)	304	#define SE } while (0)
275		305
276	#define LOAD(state) load_state((state));
277	#define SAVE(state,flags) save_state((state),(flags));
278
279	#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
280		307
281	static void	308	static void
282	load_state(Coro__State c)	309	load_perl (Coro__State c)
283	{	310	{
284	PL_dowarn = c->dowarn;	311	#define VAR(name,type) PL_ ## name = c->name;
285	PL_in_eval = c->in_eval;	312	# include "state.h"
286		313	#undef VAR
287	PL_curstackinfo = c->curstackinfo;
288	PL_curstack = c->curstack;
289	PL_mainstack = c->mainstack;
290	PL_stack_sp = c->stack_sp;
291	PL_op = c->op;
292	PL_curpad = c->curpad;
293	PL_comppad = c->comppad;
294	PL_compcv = c->compcv;
295	PL_stack_base = c->stack_base;
296	PL_stack_max = c->stack_max;
297	PL_tmps_stack = c->tmps_stack;
298	PL_tmps_floor = c->tmps_floor;
299	PL_tmps_ix = c->tmps_ix;
300	PL_tmps_max = c->tmps_max;
301	PL_markstack = c->markstack;
302	PL_markstack_ptr = c->markstack_ptr;
303	PL_markstack_max = c->markstack_max;
304	PL_scopestack = c->scopestack;
305	PL_scopestack_ix = c->scopestack_ix;
306	PL_scopestack_max = c->scopestack_max;
307	PL_savestack = c->savestack;
308	PL_savestack_ix = c->savestack_ix;
309	PL_savestack_max = c->savestack_max;
310	#if !PERL_VERSION_ATLEAST (5,9,0)
311	PL_retstack = c->retstack;
312	PL_retstack_ix = c->retstack_ix;
313	PL_retstack_max = c->retstack_max;
314	#endif
315	PL_curpm = c->curpm;
316	PL_curcop = c->curcop;
317		314
318	if (c->defav) REPLACE_SV (GvAV (PL_defgv), c->defav);	315	if (c->defav) REPLACE_SV (GvAV (PL_defgv), c->defav);
319	if (c->defsv) REPLACE_SV (DEFSV , c->defsv);	316	if (c->defsv) REPLACE_SV (DEFSV , c->defsv);
320	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	}
321		329
322	{	330	{
323	dSP;	331	dSP;
324	CV *cv;	332	CV *cv;
325		333
326	/* now do the ugly restore mess */	334	/* now do the ugly restore mess */
327	while ((cv = (CV *)POPs))	335	while ((cv = (CV *)POPs))
328	{	336	{
329	AV padlist = (AV )POPs;
330
331	if (padlist)
332	{
333	put_padlist (cv); /* mark this padlist as available */	337	put_padlist (cv); /* mark this padlist as available */
334	CvPADLIST(cv) = padlist;	338	CvDEPTH (cv) = PTR2IV (POPs);
335	}	339	CvPADLIST (cv) = (AV *)POPs;
336
337	++CvDEPTH(cv);
338	}	340	}
339		341
340	PUTBACK;	342	PUTBACK;
341	}	343	}
342	}	344	}
343		345
344	static void	346	static void
345	save_state(Coro__State c, int flags)	347	save_perl (Coro__State c)
346	{	348	{
347	{	349	{
348	dSP;	350	dSP;
349	I32 cxix = cxstack_ix;	351	I32 cxix = cxstack_ix;
350	PERL_CONTEXT *ccstk = cxstack;	352	PERL_CONTEXT *ccstk = cxstack;
…		…
353	/*	355	/*
354	* 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
355	* (and reinitialize) all cv's in the whole callchain :(	357	* (and reinitialize) all cv's in the whole callchain :(
356	*/	358	*/
357		359
		360	EXTEND (SP, 3 + 1);
358	PUSHs (Nullsv);	361	PUSHs (Nullsv);
359	/* this loop was inspired by pp_caller */	362	/* this loop was inspired by pp_caller */
360	for (;;)	363	for (;;)
361	{	364	{
362	while (cxix >= 0)	365	while (cxix >= 0)
363	{	366	{
364	PERL_CONTEXT *cx = &ccstk[cxix--];	367	PERL_CONTEXT *cx = &ccstk[cxix--];
365		368
366	if (CxTYPE(cx) == CXt_SUB)	369	if (CxTYPE (cx) == CXt_SUB)
367	{	370	{
368	CV *cv = cx->blk_sub.cv;	371	CV *cv = cx->blk_sub.cv;
		372
369	if (CvDEPTH(cv))	373	if (CvDEPTH (cv))
370	{	374	{
371	EXTEND (SP, CvDEPTH(cv)*2);	375	EXTEND (SP, 3);
372
373	while (--CvDEPTH(cv))
374	{
375	/* this tells the restore code to increment CvDEPTH */
376	PUSHs (Nullsv);
377	PUSHs ((SV *)cv);
378	}
379
380	PUSHs ((SV *)CvPADLIST(cv));	376	PUSHs ((SV *)CvPADLIST (cv));
		377	PUSHs (INT2PTR (SV *, CvDEPTH (cv)));
381	PUSHs ((SV *)cv);	378	PUSHs ((SV *)cv);
382		379
		380	CvDEPTH (cv) = 0;
383	get_padlist (cv);	381	get_padlist (cv);
384	}	382	}
385	}	383	}
386	#ifdef CXt_FORMAT
387	else if (CxTYPE(cx) == CXt_FORMAT)
388	{
389	/* I never used formats, so how should I know how these are implemented? */
390	/* my bold guess is as a simple, plain sub... */
391	croak ("CXt_FORMAT not yet handled. Don't switch coroutines from within formats");
392	}
393	#endif
394	}	384	}
395		385
396	if (top_si->si_type == PERLSI_MAIN)	386	if (top_si->si_type == PERLSI_MAIN)
397	break;	387	break;
398		388
…		…
402	}	392	}
403		393
404	PUTBACK;	394	PUTBACK;
405	}	395	}
406		396
407	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;
408	c->defsv = flags & TRANSFER_SAVE_DEFSV ? SvREFCNT_inc (DEFSV) : 0;	398	c->defsv = c->save & CORO_SAVE_DEFSV ? SvREFCNT_inc (DEFSV) : 0;
409	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;
410		401
411	c->dowarn = PL_dowarn;	402	#define VAR(name,type)c->name = PL_ ## name;
412	c->in_eval = PL_in_eval;	403	# include "state.h"
413		404	#undef VAR
414	c->curstackinfo = PL_curstackinfo;
415	c->curstack = PL_curstack;
416	c->mainstack = PL_mainstack;
417	c->stack_sp = PL_stack_sp;
418	c->op = PL_op;
419	c->curpad = PL_curpad;
420	c->comppad = PL_comppad;
421	c->compcv = PL_compcv;
422	c->stack_base = PL_stack_base;
423	c->stack_max = PL_stack_max;
424	c->tmps_stack = PL_tmps_stack;
425	c->tmps_floor = PL_tmps_floor;
426	c->tmps_ix = PL_tmps_ix;
427	c->tmps_max = PL_tmps_max;
428	c->markstack = PL_markstack;
429	c->markstack_ptr = PL_markstack_ptr;
430	c->markstack_max = PL_markstack_max;
431	c->scopestack = PL_scopestack;
432	c->scopestack_ix = PL_scopestack_ix;
433	c->scopestack_max = PL_scopestack_max;
434	c->savestack = PL_savestack;
435	c->savestack_ix = PL_savestack_ix;
436	c->savestack_max = PL_savestack_max;
437	#if !PERL_VERSION_ATLEAST (5,9,0)
438	c->retstack = PL_retstack;
439	c->retstack_ix = PL_retstack_ix;
440	c->retstack_max = PL_retstack_max;
441	#endif
442	c->curpm = PL_curpm;
443	c->curcop = PL_curcop;
444	}	405	}
445		406
446	/*	407	/*
447	* allocate various perl stacks. This is an exact copy	408	* allocate various perl stacks. This is an exact copy
448	* of perl.c:init_stacks, except that it uses less memory	409	* of perl.c:init_stacks, except that it uses less memory
449	* on the (sometimes correct) assumption that coroutines do	410	* on the (sometimes correct) assumption that coroutines do
450	* not usually need a lot of stackspace.	411	* not usually need a lot of stackspace.
451	*/	412	*/
		413	#if PREFER_PERL_FUNCTIONS
		414	# define coro_init_stacks init_stacks
		415	#else
452	static void	416	static void
453	coro_init_stacks ()	417	coro_init_stacks ()
454	{	418	{
455	PL_curstackinfo = new_stackinfo(96, 1024/sizeof(PERL_CONTEXT) - 1);	419	PL_curstackinfo = new_stackinfo(128, 1024/sizeof(PERL_CONTEXT));
456	PL_curstackinfo->si_type = PERLSI_MAIN;	420	PL_curstackinfo->si_type = PERLSI_MAIN;
457	PL_curstack = PL_curstackinfo->si_stack;	421	PL_curstack = PL_curstackinfo->si_stack;
458	PL_mainstack = PL_curstack; /* remember in case we switch stacks */	422	PL_mainstack = PL_curstack; /* remember in case we switch stacks */
459		423
460	PL_stack_base = AvARRAY(PL_curstack);	424	PL_stack_base = AvARRAY(PL_curstack);
461	PL_stack_sp = PL_stack_base;	425	PL_stack_sp = PL_stack_base;
462	PL_stack_max = PL_stack_base + AvMAX(PL_curstack);	426	PL_stack_max = PL_stack_base + AvMAX(PL_curstack);
463		427
464	New(50,PL_tmps_stack,96,SV*);	428	New(50,PL_tmps_stack,128,SV*);
465	PL_tmps_floor = -1;	429	PL_tmps_floor = -1;
466	PL_tmps_ix = -1;	430	PL_tmps_ix = -1;
467	PL_tmps_max = 96;	431	PL_tmps_max = 128;
468		432
469	New(54,PL_markstack,16,I32);	433	New(54,PL_markstack,32,I32);
470	PL_markstack_ptr = PL_markstack;	434	PL_markstack_ptr = PL_markstack;
471	PL_markstack_max = PL_markstack + 16;	435	PL_markstack_max = PL_markstack + 32;
472		436
473	#ifdef SET_MARK_OFFSET	437	#ifdef SET_MARK_OFFSET
474	SET_MARK_OFFSET;	438	SET_MARK_OFFSET;
475	#endif	439	#endif
476		440
477	New(54,PL_scopestack,16,I32);	441	New(54,PL_scopestack,32,I32);
478	PL_scopestack_ix = 0;	442	PL_scopestack_ix = 0;
479	PL_scopestack_max = 16;	443	PL_scopestack_max = 32;
480		444
481	New(54,PL_savestack,96,ANY);	445	New(54,PL_savestack,64,ANY);
482	PL_savestack_ix = 0;	446	PL_savestack_ix = 0;
483	PL_savestack_max = 96;	447	PL_savestack_max = 64;
484		448
485	#if !PERL_VERSION_ATLEAST (5,9,0)	449	#if !PERL_VERSION_ATLEAST (5,9,0)
486	New(54,PL_retstack,8,OP*);	450	New(54,PL_retstack,16,OP*);
487	PL_retstack_ix = 0;	451	PL_retstack_ix = 0;
488	PL_retstack_max = 8;	452	PL_retstack_max = 16;
489	#endif	453	#endif
490	}	454	}
		455	#endif
491		456
492	/*	457	/*
493	* destroy the stacks, the callchain etc...	458	* destroy the stacks, the callchain etc...
494	*/	459	*/
495	static void	460	static void
496	coro_destroy_stacks()	461	coro_destroy_stacks ()
497	{	462	{
498	if (!IN_DESTRUCT)	463	if (!IN_DESTRUCT)
499	{	464	{
500	/* is this ugly, I ask? */	465	/* restore all saved variables and stuff */
501	LEAVE_SCOPE (0);	466	LEAVE_SCOPE (0);
		467	assert (PL_tmps_floor == -1);
502		468
503	/* sure it is, but more important: is it correct?? :/ */	469	/* free all temporaries */
504	FREETMPS;	470	FREETMPS;
		471	assert (PL_tmps_ix == -1);
505		472
506	/POPSTACK_TO (PL_mainstack);//D//use/	473	POPSTACK_TO (PL_mainstack);
507	}	474	}
508		475
509	while (PL_curstackinfo->si_next)	476	while (PL_curstackinfo->si_next)
510	PL_curstackinfo = PL_curstackinfo->si_next;	477	PL_curstackinfo = PL_curstackinfo->si_next;
511		478
512	while (PL_curstackinfo)	479	while (PL_curstackinfo)
513	{	480	{
514	PERL_SI *p = PL_curstackinfo->si_prev;	481	PERL_SI *p = PL_curstackinfo->si_prev;
515		482
516	{ /D//remove/
517	dSP;
518	SWITCHSTACK (PL_curstack, PL_curstackinfo->si_stack);
519	PUTBACK; /* possibly superfluous */
520	}
521
522	if (!IN_DESTRUCT)	483	if (!IN_DESTRUCT)
523	{
524	dounwind (-1);/D//remove/
525	SvREFCNT_dec (PL_curstackinfo->si_stack);	484	SvREFCNT_dec (PL_curstackinfo->si_stack);
526	}
527		485
528	Safefree (PL_curstackinfo->si_cxstack);	486	Safefree (PL_curstackinfo->si_cxstack);
529	Safefree (PL_curstackinfo);	487	Safefree (PL_curstackinfo);
530	PL_curstackinfo = p;	488	PL_curstackinfo = p;
531	}	489	}
…		…
546	* emulate part of the perl startup here.	504	* emulate part of the perl startup here.
547	*/	505	*/
548		506
549	coro_init_stacks ();	507	coro_init_stacks ();
550		508
551	PL_curcop = 0;	509	PL_curcop = &PL_compiling;
552	PL_in_eval = 0;	510	PL_in_eval = EVAL_NULL;
553	PL_curpm = 0;	511	PL_curpm = 0;
		512	PL_localizing = 0;
		513	PL_dirty = 0;
		514	PL_restartop = 0;
554		515
555	{	516	{
556	dSP;	517	dSP;
557	LOGOP myop;	518	LOGOP myop;
558		519
559	/* I have no idea why this is needed, but it is */
560	PUSHMARK (SP);
561
562	SvREFCNT_dec (GvAV (PL_defgv));	520	SvREFCNT_dec (GvAV (PL_defgv));
563	GvAV (PL_defgv) = coro->args; coro->args = 0;	521	GvAV (PL_defgv) = coro->args; coro->args = 0;
564		522
565	Zero (&myop, 1, LOGOP);	523	Zero (&myop, 1, LOGOP);
566	myop.op_next = Nullop;	524	myop.op_next = Nullop;
567	myop.op_flags = OPf_WANT_VOID;	525	myop.op_flags = OPf_WANT_VOID;
568		526
		527	PUSHMARK (SP);
		528	XPUSHs ((SV *)get_cv ("Coro::State::_coro_init", FALSE));
		529	PUTBACK;
569	PL_op = (OP *)&myop;	530	PL_op = (OP *)&myop;
570
571	PUSHMARK (SP);
572	XPUSHs ((SV *)get_cv ("Coro::State::coro_init", FALSE));
573	PUTBACK;
574	PL_op = PL_ppaddr[OP_ENTERSUB](aTHX);	531	PL_op = PL_ppaddr[OP_ENTERSUB](aTHX);
575	SPAGAIN;	532	SPAGAIN;
576
577	ENTER; /* necessary e.g. for dounwind */
578	}	533	}
		534
		535	ENTER; /* necessary e.g. for dounwind */
579	}	536	}
580		537
581	static void	538	static void
582	free_coro_mortal ()	539	free_coro_mortal ()
583	{	540	{
…		…
586	SvREFCNT_dec (coro_mortal);	543	SvREFCNT_dec (coro_mortal);
587	coro_mortal = 0;	544	coro_mortal = 0;
588	}	545	}
589	}	546	}
590		547
		548	/* inject a fake call to Coro::State::_cctx_init into the execution */
591	static void NOINLINE	549	static void NOINLINE
592	prepare_cctx (coro_stack *cctx)	550	prepare_cctx (coro_cctx *cctx)
593	{	551	{
594	dSP;	552	dSP;
595	LOGOP myop;	553	LOGOP myop;
596		554
597	Zero (&myop, 1, LOGOP);	555	Zero (&myop, 1, LOGOP);
598	myop.op_next = PL_op;	556	myop.op_next = PL_op;
599	myop.op_flags = OPf_WANT_VOID;	557	myop.op_flags = OPf_WANT_VOID \| OPf_STACKED;
600
601	sv_setiv (get_sv ("Coro::State::cctx_stack", FALSE), PTR2IV (cctx));
602		558
603	PUSHMARK (SP);	559	PUSHMARK (SP);
		560	EXTEND (SP, 2);
		561	PUSHs (sv_2mortal (newSViv (PTR2IV (cctx))));
604	XPUSHs ((SV *)get_cv ("Coro::State::cctx_init", FALSE));	562	PUSHs ((SV *)get_cv ("Coro::State::_cctx_init", FALSE));
605	PUTBACK;	563	PUTBACK;
		564	PL_op = (OP *)&myop;
606	PL_restartop = PL_ppaddr[OP_ENTERSUB](aTHX);	565	PL_op = PL_ppaddr[OP_ENTERSUB](aTHX);
607	SPAGAIN;	566	SPAGAIN;
608	}	567	}
609		568
610	static void	569	static void
611	coro_run (void *arg)	570	coro_run (void *arg)
612	{	571	{
613	/* coro_run is the alternative epilogue of transfer() */	572	/* coro_run is the alternative tail of transfer(), so unlock here. */
614	UNLOCK;	573	UNLOCK;
615		574
616	/*	575	/*
617	* this is a _very_ stripped down perl interpreter ;)	576	* this is a _very_ stripped down perl interpreter ;)
618	*/	577	*/
619	PL_top_env = &PL_start_env;	578	PL_top_env = &PL_start_env;
		579
620	/* inject call to cctx_init */	580	/* inject call to cctx_init */
621	prepare_cctx ((coro_stack *)arg);	581	prepare_cctx ((coro_cctx *)arg);
622		582
623	/* somebody will hit me for both perl_run and PL_restartop */	583	/* somebody will hit me for both perl_run and PL_restartop */
		584	PL_restartop = PL_op;
624	perl_run (PL_curinterp);	585	perl_run (PL_curinterp);
625		586
626	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);
627	abort ();	588	abort ();
628	}	589	}
629		590
630	static coro_stack *	591	static coro_cctx *
631	stack_new ()	592	cctx_new ()
632	{	593	{
633	coro_stack *stack;	594	coro_cctx *cctx;
634		595
		596	++cctx_count;
		597
635	New (0, stack, 1, coro_stack);	598	Newz (0, cctx, 1, coro_cctx);
636		599
637	#if HAVE_MMAP	600	#if HAVE_MMAP
638		601
639	stack->ssize = ((STACKSIZE * sizeof (long) + PAGESIZE - 1) / PAGESIZE + STACKGUARD) * PAGESIZE;	602	cctx->ssize = ((STACKSIZE * sizeof (long) + PAGESIZE - 1) / PAGESIZE + STACKGUARD) * PAGESIZE;
640	/* mmap suppsedly does allocate-on-write for us */	603	/* mmap supposedly does allocate-on-write for us */
641	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);
642		605
643	if (stack->sptr == (void *)-1)	606	if (cctx->sptr == (void *)-1)
644	{	607	{
645	perror ("FATAL: unable to mmap stack for coroutine");	608	perror ("FATAL: unable to mmap stack for coroutine");
646	_exit (EXIT_FAILURE);	609	_exit (EXIT_FAILURE);
647	}	610	}
648		611
649	# if STACKGUARD	612	# if STACKGUARD
650	mprotect (stack->sptr, STACKGUARD * PAGESIZE, PROT_NONE);	613	mprotect (cctx->sptr, STACKGUARD * PAGESIZE, PROT_NONE);
651	# endif	614	# endif
652		615
653	#else	616	#else
654		617
655	stack->ssize = STACKSIZE * (long)sizeof (long);	618	cctx->ssize = STACKSIZE * (long)sizeof (long);
656	New (0, stack->sptr, STACKSIZE, long);	619	New (0, cctx->sptr, STACKSIZE, long);
657		620
658	if (!stack->sptr)	621	if (!cctx->sptr)
659	{	622	{
660	perror (stderr, "FATAL: unable to malloc stack for coroutine");	623	perror ("FATAL: unable to malloc stack for coroutine");
661	_exit (EXIT_FAILURE);	624	_exit (EXIT_FAILURE);
662	}	625	}
663		626
664	#endif	627	#endif
665		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
666	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);
667		637
668	return stack;	638	return cctx;
669	}	639	}
670		640
671	static void	641	static void
672	stack_free (coro_stack *stack)	642	cctx_destroy (coro_cctx *cctx)
673	{	643	{
674	if (!stack)	644	if (!cctx)
675	return;	645	return;
676		646
		647	--cctx_count;
		648
		649	#if USE_VALGRIND
		650	VALGRIND_STACK_DEREGISTER (cctx->valgrind_id);
		651	#endif
		652
677	#if HAVE_MMAP	653	#if HAVE_MMAP
678	munmap (stack->sptr, stack->ssize);	654	munmap (cctx->sptr, cctx->ssize);
679	#else	655	#else
680	Safefree (stack->sptr);	656	Safefree (cctx->sptr);
681	#endif	657	#endif
682		658
683	Safefree (stack);	659	Safefree (cctx);
684	}	660	}
685		661
686	static coro_stack *stack_first;
687	static int cctx_count, cctx_idle;
688
689	static coro_stack *	662	static coro_cctx *
690	stack_get ()	663	cctx_get ()
691	{	664	{
692	coro_stack *stack;	665	coro_cctx *cctx;
693		666
694	if (stack_first)	667	if (cctx_first)
695	{	668	{
		669	cctx = cctx_first;
		670	cctx_first = cctx->next;
696	--cctx_idle;	671	--cctx_idle;
697	stack = stack_first;
698	stack_first = stack->next;
699	}	672	}
700	else	673	else
701	{	674	{
702	++cctx_count;	675	cctx = cctx_new ();
703	stack = stack_new ();
704	PL_op = PL_op->op_next;	676	PL_op = PL_op->op_next;
705	}	677	}
706		678
707	return stack;	679	return cctx;
708	}	680	}
709		681
710	static void	682	static void
711	stack_put (coro_stack *stack)	683	cctx_put (coro_cctx *cctx)
712	{	684	{
		685	/* free another cctx if overlimit */
		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
713	++cctx_idle;	696	++cctx_idle;
714	stack->next = stack_first;	697	cctx->next = cctx_first;
715	stack_first = stack;	698	cctx_first = cctx;
716	}	699	}
717		700
718	/* never call directly, always through the coro_state_transfer global variable */	701	/* never call directly, always through the coro_state_transfer global variable */
719	static void NOINLINE	702	static void NOINLINE
720	transfer (struct coro prev, struct coro next, int flags)	703	transfer (struct coro prev, struct coro next)
721	{	704	{
722	dSTACKLEVEL;	705	dSTACKLEVEL;
723		706
724	/* sometimes transfer is only called to set idle_sp */	707	/* sometimes transfer is only called to set idle_sp */
725	if (flags == TRANSFER_SET_STACKLEVEL)	708	if (!next)
		709	{
726	((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	}
727	else if (prev != next)	713	else if (prev != next)
728	{	714	{
729	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;
730		735
731	LOCK;	736	LOCK;
732		737
733	if (next->mainstack)	738	if (next->flags & CF_NEW)
734	{	739	{
735	/* coroutine already started */	740	/* need to start coroutine */
736	SAVE (prev, flags);	741	next->flags &= ~CF_NEW;
737	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);
738	}	748	}
739	else	749	else
740	{	750	{
741	/* need to start coroutine */	751	/* coroutine already started */
742	/* first get rid of the old state */	752	save_perl (prev);
743	SAVE (prev, -1);	753	load_perl (next);
744	/* setup coroutine call */
745	setup_coro (next);
746	/* need a stack */
747	next->stack = 0;
748	}	754	}
749		755
750	if (!prev->stack)
751	/* create a new empty context */
752	Newz (0, prev->stack, 1, coro_stack);
753
754	prev__stack = prev->stack;	756	prev__cctx = prev->cctx;
755		757
756	/* possibly "free" the stack */	758	/* possibly "free" the cctx */
757	if (prev__stack->idle_sp == STACKLEVEL)	759	if (prev__cctx->idle_sp == STACKLEVEL)
758	{	760	{
759	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
760	prev->stack = 0;	764	prev->cctx = 0;
		765
		766	cctx_put (prev__cctx);
		767	prev__cctx->inuse = 0;
761	}	768	}
762		769
763	if (!next->stack)	770	if (!next->cctx)
764	next->stack = stack_get ();
765
766	if (prev__stack != next->stack)
767	{	771	{
768	prev__stack->top_env = PL_top_env;	772	next->cctx = cctx_get ();
769	PL_top_env = next->stack->top_env;	773	assert (!next->cctx->inuse);
770	coro_transfer (&prev__stack->cctx, &next->stack->cctx);	774	next->cctx->inuse = 1;
771	}	775	}
772		776
		777	if (prev__cctx != next->cctx)
		778	{
		779	prev__cctx->top_env = PL_top_env;
		780	PL_top_env = next->cctx->top_env;
		781	coro_transfer (&prev__cctx->cctx, &next->cctx->cctx);
		782	}
		783
773	free_coro_mortal ();	784	free_coro_mortal ();
774		785
775	UNLOCK;	786	UNLOCK;
776	}	787	}
777	}	788	}
778		789
779	struct transfer_args	790	struct transfer_args
780	{	791	{
781	struct coro prev, next;	792	struct coro prev, next;
782	int flags;
783	};	793	};
784		794
785	#define TRANSFER(ta) transfer ((ta).prev, (ta).next, (ta).flags)	795	#define TRANSFER(ta) transfer ((ta).prev, (ta).next)
786		796
787	static void	797	static void
788	coro_state_destroy (struct coro *coro)	798	coro_state_destroy (struct coro *coro)
789	{	799	{
790	if (coro->refcnt--)	800	if (coro->refcnt--)
791	return;	801	return;
792		802
793	if (coro->mainstack && coro->mainstack != main_mainstack)	803	if (coro->mainstack && coro->mainstack != main_mainstack)
794	{	804	{
795	struct coro temp;	805	struct coro temp;
		806	Zero (&temp, 1, struct coro);
		807	temp.save = CORO_SAVE_ALL;
796		808
797	SAVE ((&temp), TRANSFER_SAVE_ALL);	809	if (coro->flags & CF_RUNNING)
798	LOAD (coro);	810	croak ("FATAL: tried to destroy currently running coroutine");
		811
		812	save_perl (&temp);
		813	load_perl (coro);
799		814
800	coro_destroy_stacks ();	815	coro_destroy_stacks ();
801		816
802	LOAD ((&temp)); /* this will get rid of defsv etc.. */	817	load_perl (&temp); /* this will get rid of defsv etc.. */
803		818
804	coro->mainstack = 0;	819	coro->mainstack = 0;
805	}	820	}
806		821
807	stack_free (coro->stack);	822	cctx_destroy (coro->cctx);
808	SvREFCNT_dec (coro->args);	823	SvREFCNT_dec (coro->args);
809	Safefree (coro);	824	Safefree (coro);
810	}	825	}
811		826
812	static int	827	static int
…		…
862	assert (mg->mg_type == PERL_MAGIC_ext);	877	assert (mg->mg_type == PERL_MAGIC_ext);
863	return (struct coro *)mg->mg_ptr;	878	return (struct coro *)mg->mg_ptr;
864	}	879	}
865		880
866	static void	881	static void
867	prepare_transfer (struct transfer_args ta, SV prev, SV *next, int flags)	882	prepare_transfer (struct transfer_args ta, SV prev_sv, SV *next_sv)
868	{	883	{
869	ta->prev = SvSTATE (prev);	884	ta->prev = SvSTATE (prev_sv);
870	ta->next = SvSTATE (next);	885	ta->next = SvSTATE (next_sv);
871	ta->flags = flags;
872	}	886	}
873		887
874	static void	888	static void
875	api_transfer (SV prev, SV next, int flags)	889	api_transfer (SV prev_sv, SV next_sv)
876	{	890	{
877	dTHX;
878	struct transfer_args ta;	891	struct transfer_args ta;
879		892
880	prepare_transfer (&ta, prev, next, flags);	893	prepare_transfer (&ta, prev_sv, next_sv);
881	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;
882	}	907	}
883		908
884	/ Coro ******************************************************************/	909	/ Coro ******************************************************************/
885		910
886	#define PRIO_MAX 3	911	#define PRIO_MAX 3
…		…
889	#define PRIO_LOW -1	914	#define PRIO_LOW -1
890	#define PRIO_IDLE -3	915	#define PRIO_IDLE -3
891	#define PRIO_MIN -4	916	#define PRIO_MIN -4
892		917
893	/* for Coro.pm */	918	/* for Coro.pm */
894	static GV coro_current, coro_idle;	919	static SV *coro_current;
895	static AV *coro_ready [PRIO_MAX-PRIO_MIN+1];	920	static AV *coro_ready [PRIO_MAX-PRIO_MIN+1];
896	static int coro_nready;	921	static int coro_nready;
897		922
898	static void	923	static void
899	coro_enq (SV *sv)	924	coro_enq (SV *coro_sv)
900	{	925	{
901	int prio;
902
903	if (SvTYPE (sv) != SVt_PVHV)
904	croak ("Coro::ready tried to enqueue something that is not a coroutine");
905
906	prio = SvSTATE (sv)->prio;
907
908	av_push (coro_ready [prio - PRIO_MIN], sv);	926	av_push (coro_ready [SvSTATE (coro_sv)->prio - PRIO_MIN], coro_sv);
909	coro_nready++;	927	coro_nready++;
910	}	928	}
911		929
912	static SV *	930	static SV *
913	coro_deq (int min_prio)	931	coro_deq (int min_prio)
…		…
926	}	944	}
927		945
928	return 0;	946	return 0;
929	}	947	}
930		948
931	static void	949	static int
932	api_ready (SV *coro)	950	api_ready (SV *coro_sv)
933	{	951	{
934	dTHX;	952	struct coro *coro;
935		953
936	if (SvROK (coro))	954	if (SvROK (coro_sv))
937	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;
938		963
939	LOCK;	964	LOCK;
940	coro_enq (SvREFCNT_inc (coro));	965	coro_enq (SvREFCNT_inc (coro_sv));
941	UNLOCK;	966	UNLOCK;
		967
		968	return 1;
		969	}
		970
		971	static int
		972	api_is_ready (SV *coro_sv)
		973	{
		974	return !!SvSTATE (coro_sv)->flags & CF_READY;
942	}	975	}
943		976
944	static void	977	static void
945	prepare_schedule (struct transfer_args *ta)	978	prepare_schedule (struct transfer_args *ta)
946	{	979	{
947	SV current, prev, *next;	980	SV prev, next;
948
949	current = GvSV (coro_current);
950		981
951	for (;;)	982	for (;;)
952	{	983	{
953	LOCK;	984	LOCK;
954	next = coro_deq (PRIO_MIN);	985	next = coro_deq (PRIO_MIN);
…		…
963	ENTER;	994	ENTER;
964	SAVETMPS;	995	SAVETMPS;
965		996
966	PUSHMARK (SP);	997	PUSHMARK (SP);
967	PUTBACK;	998	PUTBACK;
968	call_sv (GvSV (coro_idle), G_DISCARD);	999	call_sv (get_sv ("Coro::idle", FALSE), G_DISCARD);
969		1000
970	FREETMPS;	1001	FREETMPS;
971	LEAVE;	1002	LEAVE;
972	}	1003	}
973	}	1004	}
974		1005
975	prev = SvRV (current);	1006	prev = SvRV (coro_current);
976	SvRV (current) = next;	1007	SvRV_set (coro_current, next);
977		1008
978	/* free this only after the transfer */	1009	/* free this only after the transfer */
979	LOCK;	1010	LOCK;
980	free_coro_mortal ();	1011	free_coro_mortal ();
981	UNLOCK;	1012	UNLOCK;
982	coro_mortal = prev;	1013	coro_mortal = prev;
983		1014
		1015	assert (!SvROK(prev));//D
		1016	assert (!SvROK(next));//D
		1017
984	ta->prev = SvSTATE (prev);	1018	ta->prev = SvSTATE (prev);
985	ta->next = SvSTATE (next);	1019	ta->next = SvSTATE (next);
986	ta->flags = TRANSFER_SAVE_ALL;	1020
		1021	assert (ta->next->flags & CF_READY);
		1022	ta->next->flags &= ~CF_READY;
987	}	1023	}
988		1024
989	static void	1025	static void
990	prepare_cede (struct transfer_args *ta)	1026	prepare_cede (struct transfer_args *ta)
991	{	1027	{
992	LOCK;	1028	api_ready (coro_current);
993	coro_enq (SvREFCNT_inc (SvRV (GvSV (coro_current))));
994	UNLOCK;
995		1029
996	prepare_schedule (ta);	1030	prepare_schedule (ta);
997	}	1031	}
998		1032
999	static void	1033	static void
1000	api_schedule (void)	1034	api_schedule (void)
1001	{	1035	{
1002	dTHX;
1003	struct transfer_args ta;	1036	struct transfer_args ta;
1004		1037
1005	prepare_schedule (&ta);	1038	prepare_schedule (&ta);
1006	TRANSFER (ta);	1039	TRANSFER (ta);
1007	}	1040	}
1008		1041
1009	static void	1042	static void
1010	api_cede (void)	1043	api_cede (void)
1011	{	1044	{
1012	dTHX;
1013	struct transfer_args ta;	1045	struct transfer_args ta;
1014		1046
1015	prepare_cede (&ta);	1047	prepare_cede (&ta);
1016	TRANSFER (ta);	1048	TRANSFER (ta);
1017	}	1049	}
…		…
1027	#endif	1059	#endif
1028	BOOT_PAGESIZE;	1060	BOOT_PAGESIZE;
1029		1061
1030	coro_state_stash = gv_stashpv ("Coro::State", TRUE);	1062	coro_state_stash = gv_stashpv ("Coro::State", TRUE);
1031		1063
1032	newCONSTSUB (coro_state_stash, "SAVE_DEFAV", newSViv (TRANSFER_SAVE_DEFAV));	1064	newCONSTSUB (coro_state_stash, "SAVE_DEFAV", newSViv (CORO_SAVE_DEFAV));
1033	newCONSTSUB (coro_state_stash, "SAVE_DEFSV", newSViv (TRANSFER_SAVE_DEFSV));	1065	newCONSTSUB (coro_state_stash, "SAVE_DEFSV", newSViv (CORO_SAVE_DEFSV));
1034	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));
1035		1069
1036	main_mainstack = PL_mainstack;	1070	main_mainstack = PL_mainstack;
1037		1071
1038	coroapi.ver = CORO_API_VERSION;	1072	coroapi.ver = CORO_API_VERSION;
1039	coroapi.transfer = api_transfer;	1073	coroapi.transfer = api_transfer;
…		…
1049	HV *hv;	1083	HV *hv;
1050	int i;	1084	int i;
1051		1085
1052	Newz (0, coro, 1, struct coro);	1086	Newz (0, coro, 1, struct coro);
1053	coro->args = newAV ();	1087	coro->args = newAV ();
		1088	coro->save = CORO_SAVE_ALL;
		1089	coro->flags = CF_NEW;
1054		1090
1055	hv = newHV ();	1091	hv = newHV ();
1056	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;
1057	RETVAL = sv_bless (newRV_noinc ((SV *)hv), gv_stashpv (klass, 1));	1093	RETVAL = sv_bless (newRV_noinc ((SV *)hv), gv_stashpv (klass, 1));
1058		1094
1059	for (i = 1; i < items; i++)	1095	for (i = 1; i < items; i++)
1060	av_push (coro->args, newSVsv (ST (i)));	1096	av_push (coro->args, newSVsv (ST (i)));
1061
1062	/coro->mainstack = 0; //actual work is done inside transfer /
1063	/coro->stack = 0;/
1064	}	1097	}
1065	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:
1066	RETVAL	1106	RETVAL
1067		1107
1068	void	1108	void
1069	_set_stacklevel (...)	1109	_set_stacklevel (...)
1070	ALIAS:	1110	ALIAS:
1071	Coro::State::transfer = 1	1111	Coro::State::transfer = 1
1072	Coro::schedule = 2	1112	Coro::schedule = 2
1073	Coro::cede = 3	1113	Coro::cede = 3
1074	Coro::Cont::yield = 4
1075	CODE:	1114	CODE:
1076	{	1115	{
1077	struct transfer_args ta;	1116	struct transfer_args ta;
1078		1117
1079	switch (ix)	1118	switch (ix)
1080	{	1119	{
1081	case 0:	1120	case 0:
1082	ta.prev = (struct coro )INT2PTR (coro_stack , SvIV (ST (0)));	1121	ta.prev = (struct coro )INT2PTR (coro_cctx , SvIV (ST (0)));
1083	ta.next = 0;	1122	ta.next = 0;
1084	ta.flags = TRANSFER_SET_STACKLEVEL;
1085	break;	1123	break;
1086		1124
1087	case 1:	1125	case 1:
1088	if (items != 3)	1126	if (items != 2)
1089	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);
1090		1128
1091	prepare_transfer (&ta, ST (0), ST (1), SvIV (ST (2)));	1129	prepare_transfer (&ta, ST (0), ST (1));
1092	break;	1130	break;
1093		1131
1094	case 2:	1132	case 2:
1095	prepare_schedule (&ta);	1133	prepare_schedule (&ta);
1096	break;	1134	break;
1097		1135
1098	case 3:	1136	case 3:
1099	prepare_cede (&ta);	1137	prepare_cede (&ta);
1100	break;	1138	break;
1101
1102	case 4:
1103	{
1104	SV *yieldstack;
1105	SV *sv;
1106	AV *defav = GvAV (PL_defgv);
1107
1108	yieldstack = *hv_fetch (
1109	(HV *)SvRV (GvSV (coro_current)),
1110	"yieldstack", sizeof ("yieldstack") - 1,
1111	0
1112	);
1113
1114	/* set up @_ -- ugly */
1115	av_clear (defav);
1116	av_fill (defav, items - 1);
1117	while (items--)
1118	av_store (defav, items, SvREFCNT_inc (ST(items)));
1119
1120	sv = av_pop ((AV *)SvRV (yieldstack));
1121	ta.prev = SvSTATE (av_fetch ((AV )SvRV (sv), 0, 0));
1122	ta.next = SvSTATE (av_fetch ((AV )SvRV (sv), 1, 0));
1123	ta.flags = 0;
1124	SvREFCNT_dec (sv);
1125	}
1126	break;
1127
1128	}	1139	}
1129		1140
1130	TRANSFER (ta);	1141	TRANSFER (ta);
1131	}	1142	}
1132		1143
…		…
1147	int code	1158	int code
1148	PROTOTYPE: $	1159	PROTOTYPE: $
1149	CODE:	1160	CODE:
1150	_exit (code);	1161	_exit (code);
1151		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
1152	MODULE = Coro::State PACKAGE = Coro	1177	MODULE = Coro::State PACKAGE = Coro
1153		1178
1154	BOOT:	1179	BOOT:
1155	{	1180	{
1156	int i;	1181	int i;
…		…
1162	newCONSTSUB (coro_stash, "PRIO_NORMAL", newSViv (PRIO_NORMAL));	1187	newCONSTSUB (coro_stash, "PRIO_NORMAL", newSViv (PRIO_NORMAL));
1163	newCONSTSUB (coro_stash, "PRIO_LOW", newSViv (PRIO_LOW));	1188	newCONSTSUB (coro_stash, "PRIO_LOW", newSViv (PRIO_LOW));
1164	newCONSTSUB (coro_stash, "PRIO_IDLE", newSViv (PRIO_IDLE));	1189	newCONSTSUB (coro_stash, "PRIO_IDLE", newSViv (PRIO_IDLE));
1165	newCONSTSUB (coro_stash, "PRIO_MIN", newSViv (PRIO_MIN));	1190	newCONSTSUB (coro_stash, "PRIO_MIN", newSViv (PRIO_MIN));
1166		1191
1167	coro_current = gv_fetchpv ("Coro::current", TRUE, SVt_PV);	1192	coro_current = get_sv ("Coro::current", FALSE);
1168	coro_idle = gv_fetchpv ("Coro::idle" , TRUE, SVt_PV);	1193	SvREADONLY_on (coro_current);
1169		1194
1170	for (i = PRIO_MAX - PRIO_MIN + 1; i--; )	1195	for (i = PRIO_MAX - PRIO_MIN + 1; i--; )
1171	coro_ready[i] = newAV ();	1196	coro_ready[i] = newAV ();
1172		1197
1173	{	1198	{
1174	SV *sv = perl_get_sv("Coro::API", 1);	1199	SV *sv = perl_get_sv("Coro::API", 1);
1175		1200
1176	coroapi.schedule = api_schedule;	1201	coroapi.schedule = api_schedule;
		1202	coroapi.save = api_save;
1177	coroapi.cede = api_cede;	1203	coroapi.cede = api_cede;
1178	coroapi.ready = api_ready;	1204	coroapi.ready = api_ready;
		1205	coroapi.is_ready = api_is_ready;
1179	coroapi.nready = &coro_nready;	1206	coroapi.nready = &coro_nready;
1180	coroapi.current = coro_current;	1207	coroapi.current = coro_current;
1181		1208
1182	GCoroAPI = &coroapi;	1209	GCoroAPI = &coroapi;
1183	sv_setiv (sv, (IV)&coroapi);	1210	sv_setiv (sv, (IV)&coroapi);
1184	SvREADONLY_on (sv);	1211	SvREADONLY_on (sv);
1185	}	1212	}
1186	}	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)));
1187		1221
1188	int	1222	int
1189	prio (Coro::State coro, int newprio = 0)	1223	prio (Coro::State coro, int newprio = 0)
1190	ALIAS:	1224	ALIAS:
1191	nice = 1	1225	nice = 1
…		…
1203		1237
1204	coro->prio = newprio;	1238	coro->prio = newprio;
1205	}	1239	}
1206	}	1240	}
1207		1241
1208	void	1242	SV *
1209	ready (SV *self)	1243	ready (SV *self)
1210	PROTOTYPE: $	1244	PROTOTYPE: $
1211	CODE:	1245	CODE:
1212	api_ready (self);	1246	RETVAL = boolSV (api_ready (self));
		1247	OUTPUT:
		1248	RETVAL
		1249
		1250	SV *
		1251	is_ready (SV *self)
		1252	PROTOTYPE: $
		1253	CODE:
		1254	RETVAL = boolSV (api_is_ready (self));
		1255	OUTPUT:
		1256	RETVAL
1213		1257
1214	int	1258	int
1215	nready (...)	1259	nready (...)
1216	PROTOTYPE:	1260	PROTOTYPE:
1217	CODE:	1261	CODE:
…		…
1223		1267
1224	SV *	1268	SV *
1225	_get_state ()	1269	_get_state ()
1226	CODE:	1270	CODE:
1227	{	1271	{
1228	struct {	1272	struct io_state *data;
1229	int errorno;
1230	int laststype;
1231	int laststatval;
1232	Stat_t statcache;
1233	} data;
1234		1273
		1274	RETVAL = newSV (sizeof (struct io_state));
		1275	data = (struct io_state *)SvPVX (RETVAL);
		1276	SvCUR_set (RETVAL, sizeof (struct io_state));
		1277	SvPOK_only (RETVAL);
		1278
1235	data.errorno = errno;	1279	data->errorno = errno;
1236	data.laststype = PL_laststype;	1280	data->laststype = PL_laststype;
1237	data.laststatval = PL_laststatval;	1281	data->laststatval = PL_laststatval;
1238	data.statcache = PL_statcache;	1282	data->statcache = PL_statcache;
1239
1240	RETVAL = newSVpvn ((char *)&data, sizeof data);
1241	}	1283	}
1242	OUTPUT:	1284	OUTPUT:
1243	RETVAL	1285	RETVAL
1244		1286
1245	void	1287	void
1246	_set_state (char *data_)	1288	_set_state (char *data_)
1247	PROTOTYPE: $	1289	PROTOTYPE: $
1248	CODE:	1290	CODE:
1249	{	1291	{
1250	struct {	1292	struct io_state data = (void )data_;
1251	int errorno;
1252	int laststype;
1253	int laststatval;
1254	Stat_t statcache;
1255	} data = (void )data_;
1256		1293
1257	errno = data->errorno;	1294	errno = data->errorno;
1258	PL_laststype = data->laststype;	1295	PL_laststype = data->laststype;
1259	PL_laststatval = data->laststatval;	1296	PL_laststatval = data->laststatval;
1260	PL_statcache = data->statcache;	1297	PL_statcache = data->statcache;
1261	}	1298	}
		1299

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Comparing Coro/Coro/State.xs (file contents): Revision 1.103 by root, Mon Nov 27 01:33:30 2006 UTC vs. Revision 1.128 by root, Fri Dec 22 04:22:28 2006 UTC

Diff Legend

Comparing Coro/Coro/State.xs (file contents):
Revision 1.103 by root, Mon Nov 27 01:33:30 2006 UTC vs.
Revision 1.128 by root, Fri Dec 22 04:22:28 2006 UTC