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

Comparing Coro/Coro/State.xs (file contents):
Revision 1.101 by root, Mon Nov 27 00:08:18 2006 UTC vs.
Revision 1.126 by root, Tue Dec 12 04:19:56 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	#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
8		15
9	#define PERL_VERSION_ATLEAST(a,b,c) \	16	#define PERL_VERSION_ATLEAST(a,b,c) \
10	(PERL_REVISION > (a) \	17	(PERL_REVISION > (a) \
11	\|\| (PERL_REVISION == (a) \	18	\|\| (PERL_REVISION == (a) \
12	&& (PERL_VERSION > (b) \	19	&& (PERL_VERSION > (b) \
13	\|\| (PERL_VERSION == (b) && PERLSUBVERSION >= (c)))))	20	\|\| (PERL_VERSION == (b) && PERLSUBVERSION >= (c)))))
14		21
15	#if !PERL_VERSION_ATLEAST (5,8,0)	22	#if !PERL_VERSION_ATLEAST (5,6,0)
16	# ifndef PL_ppaddr	23	# ifndef PL_ppaddr
17	# define PL_ppaddr ppaddr	24	# define PL_ppaddr ppaddr
18	# endif	25	# endif
19	# ifndef call_sv	26	# ifndef call_sv
20	# define call_sv perl_call_sv	27	# define call_sv perl_call_sv
…		…
31	# ifndef IS_PADCONST	38	# ifndef IS_PADCONST
32	# define IS_PADCONST(v) 0	39	# define IS_PADCONST(v) 0
33	# endif	40	# endif
34	#endif	41	#endif
35		42
		43	/* 5.8.7 */
		44	#ifndef SvRV_set
		45	# define SvRV_set(s,v) SvRV(s) = (v)
		46	#endif
		47
36	#include <stdio.h>	48	#include <stdio.h>
37	#include <errno.h>	49	#include <errno.h>
		50	#include <assert.h>
38		51
39	#if !__i386 && !__x86_64 && !__powerpc && !__m68k && !__alpha && !__mips && !__sparc64	52	#if !__i386 && !__x86_64 && !__powerpc && !__m68k && !__alpha && !__mips && !__sparc64
40	# undef STACKGUARD	53	# undef STACKGUARD
41	#endif	54	#endif
42		55
…		…
58	# ifndef PAGESIZE	71	# ifndef PAGESIZE
59	# define PAGESIZE pagesize	72	# define PAGESIZE pagesize
60	# define BOOT_PAGESIZE pagesize = sysconf (_SC_PAGESIZE)	73	# define BOOT_PAGESIZE pagesize = sysconf (_SC_PAGESIZE)
61	static long pagesize;	74	static long pagesize;
62	# else	75	# else
63	# define BOOT_PAGESIZE	76	# define BOOT_PAGESIZE (void)0
64	# endif	77	# endif
		78	#else
		79	# define PAGESIZE 0
		80	# define BOOT_PAGESIZE (void)0
65	#endif	81	#endif
66		82
67	/* 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
68	* 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
69	* and should be unique. */	85	* and should be unique. */
…		…
79	#endif	95	#endif
80		96
81	#define NOINLINE attribute ((noinline))	97	#define NOINLINE attribute ((noinline))
82		98
83	#include "CoroAPI.h"	99	#include "CoroAPI.h"
84
85	#define TRANSFER_SET_STACKLEVEL 0x8bfbfbfb /* magic cookie */
86		100
87	#ifdef USE_ITHREADS	101	#ifdef USE_ITHREADS
88	static perl_mutex coro_mutex;	102	static perl_mutex coro_mutex;
89	# define LOCK do { MUTEX_LOCK (&coro_mutex); } while (0)	103	# define LOCK do { MUTEX_LOCK (&coro_mutex); } while (0)
90	# define UNLOCK do { MUTEX_UNLOCK (&coro_mutex); } while (0)	104	# define UNLOCK do { MUTEX_UNLOCK (&coro_mutex); } while (0)
91	#else	105	#else
92	# define LOCK (void)0	106	# define LOCK (void)0
93	# define UNLOCK (void)0	107	# define UNLOCK (void)0
94	#endif	108	#endif
95		109
		110	struct io_state
		111	{
		112	int errorno;
		113	I32 laststype;
		114	int laststatval;
		115	Stat_t statcache;
		116	};
		117
96	static struct CoroAPI coroapi;	118	static struct CoroAPI coroapi;
97	static AV main_mainstack; / used to differentiate between $main and others */	119	static AV main_mainstack; / used to differentiate between $main and others */
98	static HV coro_state_stash, coro_stash;	120	static HV coro_state_stash, coro_stash;
99	static SV coro_mortal; / will be freed after next transfer */	121	static SV coro_mortal; / will be freed after next transfer */
100		122
		123	static struct coro_cctx *cctx_first;
		124	static int cctx_count, cctx_idle;
		125
101	/* this is a structure representing a c-level coroutine */	126	/* this is a structure representing a c-level coroutine */
102	typedef struct coro_stack {	127	typedef struct coro_cctx {
103	struct coro_stack *next;	128	struct coro_cctx *next;
104		129
105	/* the stack */	130	/* the stack */
106	void *sptr;	131	void *sptr;
107	long ssize; /* positive == mmap, otherwise malloc */	132	long ssize; /* positive == mmap, otherwise malloc */
108		133
109	/* cpu state */	134	/* cpu state */
110	void idle_sp; / sp of top-level transfer/schedule/cede call */	135	void idle_sp; / sp of top-level transfer/schedule/cede call */
111	JMPENV *top_env;	136	JMPENV *top_env;
112	coro_context cctx;	137	coro_context cctx;
113	} coro_stack;	138
		139	int inuse;
		140
		141	#if USE_VALGRIND
		142	int valgrind_id;
		143	#endif
		144	} coro_cctx;
		145
		146	enum {
		147	CF_RUNNING = 0x0001, /* coroutine is running */
		148	CF_READY = 0x0002, /* coroutine is ready */
		149	CF_NEW = 0x0004, /* ahs never been switched to */
		150	};
114		151
115	/* this is a structure representing a perl-level coroutine */	152	/* this is a structure representing a perl-level coroutine */
116	struct coro {	153	struct coro {
117	/* the c coroutine allocated to this perl coroutine, if any */	154	/* the c coroutine allocated to this perl coroutine, if any */
118	coro_stack *stack;	155	coro_cctx *cctx;
119		156
120	/* data associated with this coroutine (initial args) */	157	/* data associated with this coroutine (initial args) */
121	AV *args;	158	AV *args;
122	int refcnt;	159	int refcnt;
		160	int save; /* CORO_SAVE flags */
		161	int flags; /* CF_ flags */
123		162
124	/* optionally saved, might be zero */	163	/* optionally saved, might be zero */
125	AV *defav;	164	AV defav; / @_ */
126	SV *defsv;	165	SV defsv; / $_ */
127	SV *errsv;	166	SV errsv; / $@ */
		167	SV irssv; / $/ */
		168	SV irssv_sv; / real $/ cache */
128		169
129	/* saved global state not related to stacks */	170	#define VAR(name,type) type name;
130	U8 dowarn;	171	# include "state.h"
131	I32 in_eval;	172	#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		173
163	/* coro process data */	174	/* coro process data */
164	int prio;	175	int prio;
165	};	176	};
166		177
…		…
230		241
231	#define PERL_MAGIC_coro PERL_MAGIC_ext	242	#define PERL_MAGIC_coro PERL_MAGIC_ext
232		243
233	static MGVTBL vtbl_coro = {0, 0, 0, 0, coro_cv_free};	244	static MGVTBL vtbl_coro = {0, 0, 0, 0, coro_cv_free};
234		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
235	/* the next two functions merely cache the padlists */	253	/* the next two functions merely cache the padlists */
236	static void	254	static void
237	get_padlist (CV *cv)	255	get_padlist (CV *cv)
238	{	256	{
239	MAGIC mg = mg_find ((SV )cv, PERL_MAGIC_coro);	257	MAGIC *mg = CORO_MAGIC (cv);
		258	AV *av;
240		259
241	if (mg && AvFILLp ((AV *)mg->mg_obj) >= 0)	260	if (mg && AvFILLp ((av = (AV *)mg->mg_obj)) >= 0)
242	CvPADLIST (cv) = (AV )av_pop ((AV )mg->mg_obj);	261	CvPADLIST (cv) = (AV *)AvARRAY (av)[AvFILLp (av)--];
243	else	262	else
244	{	263	{
245	#if 0	264	#if 0
246	/* this is probably cleaner, but also slower? */	265	/* this is probably cleaner, but also slower? */
247	CV *cp = Perl_cv_clone (cv);	266	CV *cp = Perl_cv_clone (cv);
…		…
255	}	274	}
256		275
257	static void	276	static void
258	put_padlist (CV *cv)	277	put_padlist (CV *cv)
259	{	278	{
260	MAGIC mg = mg_find ((SV )cv, PERL_MAGIC_coro);	279	MAGIC *mg = CORO_MAGIC (cv);
		280	AV *av;
261		281
262	if (!mg)	282	if (!mg)
263	{	283	{
264	sv_magic ((SV *)cv, 0, PERL_MAGIC_coro, 0, 0);	284	sv_magic ((SV *)cv, 0, PERL_MAGIC_coro, 0, 0);
265	mg = mg_find ((SV *)cv, PERL_MAGIC_coro);	285	mg = mg_find ((SV *)cv, PERL_MAGIC_coro);
266	mg->mg_virtual = &vtbl_coro;	286	mg->mg_virtual = &vtbl_coro;
267	mg->mg_obj = (SV *)newAV ();	287	mg->mg_obj = (SV *)newAV ();
268	}	288	}
269		289
270	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);
271	}	296	}
272		297
273	#define SB do {	298	#define SB do {
274	#define SE } while (0)	299	#define SE } while (0)
275		300
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	301	#define REPLACE_SV(sv,val) SB SvREFCNT_dec (sv); (sv) = (val); (val) = 0; SE
280		302
281	static void	303	static void
282	load_state(Coro__State c)	304	load_perl (Coro__State c)
283	{	305	{
284	PL_dowarn = c->dowarn;	306	#define VAR(name,type) PL_ ## name = c->name;
285	PL_in_eval = c->in_eval;	307	# include "state.h"
286		308	#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		309
318	if (c->defav) REPLACE_SV (GvAV (PL_defgv), c->defav);	310	if (c->defav) REPLACE_SV (GvAV (PL_defgv), c->defav);
319	if (c->defsv) REPLACE_SV (DEFSV , c->defsv);	311	if (c->defsv) REPLACE_SV (DEFSV , c->defsv);
320	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	}
321		324
322	{	325	{
323	dSP;	326	dSP;
324	CV *cv;	327	CV *cv;
325		328
326	/* now do the ugly restore mess */	329	/* now do the ugly restore mess */
327	while ((cv = (CV *)POPs))	330	while ((cv = (CV *)POPs))
328	{	331	{
329	AV padlist = (AV )POPs;
330
331	if (padlist)
332	{
333	put_padlist (cv); /* mark this padlist as available */	332	put_padlist (cv); /* mark this padlist as available */
334	CvPADLIST(cv) = padlist;	333	CvDEPTH (cv) = PTR2IV (POPs);
335	}	334	CvPADLIST (cv) = (AV *)POPs;
336
337	++CvDEPTH(cv);
338	}	335	}
339		336
340	PUTBACK;	337	PUTBACK;
341	}	338	}
342	}	339	}
343		340
344	static void	341	static void
345	save_state(Coro__State c, int flags)	342	save_perl (Coro__State c)
346	{	343	{
347	{	344	{
348	dSP;	345	dSP;
349	I32 cxix = cxstack_ix;	346	I32 cxix = cxstack_ix;
350	PERL_CONTEXT *ccstk = cxstack;	347	PERL_CONTEXT *ccstk = cxstack;
…		…
353	/*	350	/*
354	* the worst thing you can imagine happens first - we have to save	351	* the worst thing you can imagine happens first - we have to save
355	* (and reinitialize) all cv's in the whole callchain :(	352	* (and reinitialize) all cv's in the whole callchain :(
356	*/	353	*/
357		354
		355	EXTEND (SP, 3 + 1);
358	PUSHs (Nullsv);	356	PUSHs (Nullsv);
359	/* this loop was inspired by pp_caller */	357	/* this loop was inspired by pp_caller */
360	for (;;)	358	for (;;)
361	{	359	{
362	while (cxix >= 0)	360	while (cxix >= 0)
363	{	361	{
364	PERL_CONTEXT *cx = &ccstk[cxix--];	362	PERL_CONTEXT *cx = &ccstk[cxix--];
365		363
366	if (CxTYPE(cx) == CXt_SUB)	364	if (CxTYPE (cx) == CXt_SUB)
367	{	365	{
368	CV *cv = cx->blk_sub.cv;	366	CV *cv = cx->blk_sub.cv;
		367
369	if (CvDEPTH(cv))	368	if (CvDEPTH (cv))
370	{	369	{
371	EXTEND (SP, CvDEPTH(cv)*2);	370	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));	371	PUSHs ((SV *)CvPADLIST (cv));
		372	PUSHs (INT2PTR (SV *, CvDEPTH (cv)));
381	PUSHs ((SV *)cv);	373	PUSHs ((SV *)cv);
382		374
		375	CvDEPTH (cv) = 0;
383	get_padlist (cv);	376	get_padlist (cv);
384	}	377	}
385	}	378	}
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	}	379	}
395		380
396	if (top_si->si_type == PERLSI_MAIN)	381	if (top_si->si_type == PERLSI_MAIN)
397	break;	382	break;
398		383
…		…
402	}	387	}
403		388
404	PUTBACK;	389	PUTBACK;
405	}	390	}
406		391
407	c->defav = flags & TRANSFER_SAVE_DEFAV ? (AV *)SvREFCNT_inc (GvAV (PL_defgv)) : 0;	392	c->defav = c->save & CORO_SAVE_DEFAV ? (AV *)SvREFCNT_inc (GvAV (PL_defgv)) : 0;
408	c->defsv = flags & TRANSFER_SAVE_DEFSV ? SvREFCNT_inc (DEFSV) : 0;	393	c->defsv = c->save & CORO_SAVE_DEFSV ? SvREFCNT_inc (DEFSV) : 0;
409	c->errsv = flags & TRANSFER_SAVE_ERRSV ? SvREFCNT_inc (ERRSV) : 0;	394	c->errsv = c->save & CORO_SAVE_ERRSV ? SvREFCNT_inc (ERRSV) : 0;
		395	c->irssv = c->save & CORO_SAVE_IRSSV ? SvREFCNT_inc (PL_rs) : 0;
410		396
411	c->dowarn = PL_dowarn;	397	#define VAR(name,type)c->name = PL_ ## name;
412	c->in_eval = PL_in_eval;	398	# include "state.h"
413		399	#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	}	400	}
445		401
446	/*	402	/*
447	* allocate various perl stacks. This is an exact copy	403	* allocate various perl stacks. This is an exact copy
448	* of perl.c:init_stacks, except that it uses less memory	404	* of perl.c:init_stacks, except that it uses less memory
449	* on the (sometimes correct) assumption that coroutines do	405	* on the (sometimes correct) assumption that coroutines do
450	* not usually need a lot of stackspace.	406	* not usually need a lot of stackspace.
451	*/	407	*/
		408	#if USE_PERL_INIT_STACKS
		409	# define coro_init_stacks init_stacks
		410	#else
		411
452	static void	412	static void
453	coro_init_stacks ()	413	coro_init_stacks ()
454	{	414	{
455	PL_curstackinfo = new_stackinfo(96, 1024/sizeof(PERL_CONTEXT) - 1);	415	PL_curstackinfo = new_stackinfo(128, 1024/sizeof(PERL_CONTEXT));
456	PL_curstackinfo->si_type = PERLSI_MAIN;	416	PL_curstackinfo->si_type = PERLSI_MAIN;
457	PL_curstack = PL_curstackinfo->si_stack;	417	PL_curstack = PL_curstackinfo->si_stack;
458	PL_mainstack = PL_curstack; /* remember in case we switch stacks */	418	PL_mainstack = PL_curstack; /* remember in case we switch stacks */
459		419
460	PL_stack_base = AvARRAY(PL_curstack);	420	PL_stack_base = AvARRAY(PL_curstack);
461	PL_stack_sp = PL_stack_base;	421	PL_stack_sp = PL_stack_base;
462	PL_stack_max = PL_stack_base + AvMAX(PL_curstack);	422	PL_stack_max = PL_stack_base + AvMAX(PL_curstack);
463		423
464	New(50,PL_tmps_stack,96,SV*);	424	New(50,PL_tmps_stack,128,SV*);
465	PL_tmps_floor = -1;	425	PL_tmps_floor = -1;
466	PL_tmps_ix = -1;	426	PL_tmps_ix = -1;
467	PL_tmps_max = 96;	427	PL_tmps_max = 128;
468		428
469	New(54,PL_markstack,16,I32);	429	New(54,PL_markstack,32,I32);
470	PL_markstack_ptr = PL_markstack;	430	PL_markstack_ptr = PL_markstack;
471	PL_markstack_max = PL_markstack + 16;	431	PL_markstack_max = PL_markstack + 32;
472		432
473	#ifdef SET_MARK_OFFSET	433	#ifdef SET_MARK_OFFSET
474	SET_MARK_OFFSET;	434	SET_MARK_OFFSET;
475	#endif	435	#endif
476		436
477	New(54,PL_scopestack,16,I32);	437	New(54,PL_scopestack,32,I32);
478	PL_scopestack_ix = 0;	438	PL_scopestack_ix = 0;
479	PL_scopestack_max = 16;	439	PL_scopestack_max = 32;
480		440
481	New(54,PL_savestack,96,ANY);	441	New(54,PL_savestack,64,ANY);
482	PL_savestack_ix = 0;	442	PL_savestack_ix = 0;
483	PL_savestack_max = 96;	443	PL_savestack_max = 64;
484		444
485	#if !PERL_VERSION_ATLEAST (5,9,0)	445	#if !PERL_VERSION_ATLEAST (5,9,0)
486	New(54,PL_retstack,8,OP*);	446	New(54,PL_retstack,16,OP*);
487	PL_retstack_ix = 0;	447	PL_retstack_ix = 0;
488	PL_retstack_max = 8;	448	PL_retstack_max = 16;
489	#endif	449	#endif
490	}	450	}
491		451
492	/*	452	/*
493	* destroy the stacks, the callchain etc...	453	* destroy the stacks, the callchain etc...
494	*/	454	*/
495	static void	455	static void
496	destroy_stacks()	456	coro_destroy_stacks ()
497	{	457	{
498	if (!IN_DESTRUCT)	458	if (!IN_DESTRUCT)
499	{	459	{
500	/* is this ugly, I ask? */	460	/* restore all saved variables and stuff */
501	LEAVE_SCOPE (0);	461	LEAVE_SCOPE (0);
		462	assert (PL_tmps_floor == -1);
502		463
503	/* sure it is, but more important: is it correct?? :/ */	464	/* free all temporaries */
504	FREETMPS;	465	FREETMPS;
		466	assert (PL_tmps_ix == -1);
505		467
506	/POPSTACK_TO (PL_mainstack);//D//use/	468	POPSTACK_TO (PL_mainstack);
507	}	469	}
508		470
509	while (PL_curstackinfo->si_next)	471	while (PL_curstackinfo->si_next)
510	PL_curstackinfo = PL_curstackinfo->si_next;	472	PL_curstackinfo = PL_curstackinfo->si_next;
511		473
512	while (PL_curstackinfo)	474	while (PL_curstackinfo)
513	{	475	{
514	PERL_SI *p = PL_curstackinfo->si_prev;	476	PERL_SI *p = PL_curstackinfo->si_prev;
515		477
516	{ /D//remove/
517	dSP;
518	SWITCHSTACK (PL_curstack, PL_curstackinfo->si_stack);
519	PUTBACK; /* possibly superfluous */
520	}
521
522	if (!IN_DESTRUCT)	478	if (!IN_DESTRUCT)
523	{
524	dounwind (-1);/D//remove/
525	SvREFCNT_dec (PL_curstackinfo->si_stack);	479	SvREFCNT_dec (PL_curstackinfo->si_stack);
526	}
527		480
528	Safefree (PL_curstackinfo->si_cxstack);	481	Safefree (PL_curstackinfo->si_cxstack);
529	Safefree (PL_curstackinfo);	482	Safefree (PL_curstackinfo);
530	PL_curstackinfo = p;	483	PL_curstackinfo = p;
531	}	484	}
…		…
536	Safefree (PL_savestack);	489	Safefree (PL_savestack);
537	#if !PERL_VERSION_ATLEAST (5,9,0)	490	#if !PERL_VERSION_ATLEAST (5,9,0)
538	Safefree (PL_retstack);	491	Safefree (PL_retstack);
539	#endif	492	#endif
540	}	493	}
		494	#endif
541		495
542	static void	496	static void
543	setup_coro (struct coro *coro)	497	setup_coro (struct coro *coro)
544	{	498	{
545	/*	499	/*
546	* emulate part of the perl startup here.	500	* emulate part of the perl startup here.
547	*/	501	*/
548	dTHX;
549	dSP;
550	UNOP myop;
551	SV sub_init = (SV )get_cv ("Coro::State::coro_init", FALSE);
552		502
553	coro_init_stacks ();	503	coro_init_stacks ();
554	/PL_curcop = 0;/	504
555	/PL_in_eval = PL_in_eval;/ /* inherit */	505	PL_curcop = &PL_compiling;
		506	PL_in_eval = EVAL_NULL;
		507	PL_curpm = 0;
		508	PL_localizing = 0;
		509	PL_dirty = 0;
		510	PL_restartop = 0;
		511
		512	{
		513	dSP;
		514	LOGOP myop;
		515
556	SvREFCNT_dec (GvAV (PL_defgv));	516	SvREFCNT_dec (GvAV (PL_defgv));
557	GvAV (PL_defgv) = coro->args; coro->args = 0;	517	GvAV (PL_defgv) = coro->args; coro->args = 0;
558		518
559	SPAGAIN;
560
561	Zero (&myop, 1, UNOP);	519	Zero (&myop, 1, LOGOP);
562	myop.op_next = Nullop;	520	myop.op_next = Nullop;
563	myop.op_flags = OPf_WANT_VOID;	521	myop.op_flags = OPf_WANT_VOID;
564		522
		523	PUSHMARK (SP);
		524	XPUSHs ((SV *)get_cv ("Coro::State::_coro_init", FALSE));
		525	PUTBACK;
565	PL_op = (OP *)&myop;	526	PL_op = (OP *)&myop;
566
567	PUSHMARK(SP);
568	XPUSHs (sub_init);
569	PUTBACK;
570	PL_op = PL_ppaddr[OP_ENTERSUB](aTHX);	527	PL_op = PL_ppaddr[OP_ENTERSUB](aTHX);
571	SPAGAIN;	528	SPAGAIN;
		529	}
572		530
573	ENTER; /* necessary e.g. for dounwind */	531	ENTER; /* necessary e.g. for dounwind */
574	}	532	}
575		533
576	static void	534	static void
…		…
581	SvREFCNT_dec (coro_mortal);	539	SvREFCNT_dec (coro_mortal);
582	coro_mortal = 0;	540	coro_mortal = 0;
583	}	541	}
584	}	542	}
585		543
		544	/* inject a fake call to Coro::State::_cctx_init into the execution */
586	static void NOINLINE	545	static void NOINLINE
587	prepare_cctx (coro_stack *cctx)	546	prepare_cctx (coro_cctx *cctx)
588	{	547	{
589	dSP;	548	dSP;
590	UNOP myop;	549	LOGOP myop;
591		550
592	Zero (&myop, 1, UNOP);	551	Zero (&myop, 1, LOGOP);
593	myop.op_next = PL_op;	552	myop.op_next = PL_op;
594	myop.op_flags = OPf_WANT_VOID \| OPf_STACKED;	553	myop.op_flags = OPf_WANT_VOID \| OPf_STACKED;
595		554
596	PUSHMARK(SP);	555	PUSHMARK (SP);
597	EXTEND (SP, 2);	556	EXTEND (SP, 2);
598	PUSHs (newSViv (PTR2IV (cctx)));	557	PUSHs (sv_2mortal (newSViv (PTR2IV (cctx))));
599	PUSHs ((SV *)get_cv ("Coro::State::cctx_init", FALSE));	558	PUSHs ((SV *)get_cv ("Coro::State::_cctx_init", FALSE));
600	PUTBACK;	559	PUTBACK;
		560	PL_op = (OP *)&myop;
601	PL_restartop = PL_ppaddr[OP_ENTERSUB](aTHX);	561	PL_op = PL_ppaddr[OP_ENTERSUB](aTHX);
602	SPAGAIN;	562	SPAGAIN;
603	}	563	}
604		564
605	static void	565	static void
606	coro_run (void *arg)	566	coro_run (void *arg)
607	{	567	{
		568	/* coro_run is the alternative tail of transfer(), so unlock here. */
		569	UNLOCK;
		570
608	/*	571	/*
609	* this is a _very_ stripped down perl interpreter ;)	572	* this is a _very_ stripped down perl interpreter ;)
610	*/	573	*/
611	UNLOCK;
612
613	PL_top_env = &PL_start_env;	574	PL_top_env = &PL_start_env;
		575
		576	/* inject call to cctx_init */
614	prepare_cctx ((coro_stack *)arg);	577	prepare_cctx ((coro_cctx *)arg);
615		578
616	/* somebody will hit me for both perl_run and PL_restartop */	579	/* somebody will hit me for both perl_run and PL_restartop */
617	perl_run (PERL_GET_CONTEXT);	580	PL_restartop = PL_op;
		581	perl_run (PL_curinterp);
618		582
619	fputs ("FATAL: C coroutine fell over the edge of the world, aborting.\n", stderr);	583	fputs ("FATAL: C coroutine fell over the edge of the world, aborting. Did you call exit in a coroutine?\n", stderr);
620	abort ();	584	abort ();
621	}	585	}
622		586
623	static coro_stack *	587	static coro_cctx *
624	stack_new ()	588	cctx_new ()
625	{	589	{
626	coro_stack *stack;	590	coro_cctx *cctx;
627		591
		592	++cctx_count;
		593
628	New (0, stack, 1, coro_stack);	594	Newz (0, cctx, 1, coro_cctx);
629		595
630	#if HAVE_MMAP	596	#if HAVE_MMAP
631		597
632	stack->ssize = ((STACKSIZE * sizeof (long) + PAGESIZE - 1) / PAGESIZE + STACKGUARD) * PAGESIZE;	598	cctx->ssize = ((STACKSIZE * sizeof (long) + PAGESIZE - 1) / PAGESIZE + STACKGUARD) * PAGESIZE;
633	/* mmap suppsedly does allocate-on-write for us */	599	/* mmap supposedly does allocate-on-write for us */
634	stack->sptr = mmap (0, stack->ssize, PROT_EXEC\|PROT_READ\|PROT_WRITE, MAP_PRIVATE\|MAP_ANONYMOUS, 0, 0);	600	cctx->sptr = mmap (0, cctx->ssize, PROT_EXEC\|PROT_READ\|PROT_WRITE, MAP_PRIVATE\|MAP_ANONYMOUS, 0, 0);
635		601
636	if (stack->sptr == (void *)-1)	602	if (cctx->sptr == (void *)-1)
637	{	603	{
638	perror ("FATAL: unable to mmap stack for coroutine");	604	perror ("FATAL: unable to mmap stack for coroutine");
639	_exit (EXIT_FAILURE);	605	_exit (EXIT_FAILURE);
640	}	606	}
641		607
642	# if STACKGUARD	608	# if STACKGUARD
643	mprotect (stack->sptr, STACKGUARD * PAGESIZE, PROT_NONE);	609	mprotect (cctx->sptr, STACKGUARD * PAGESIZE, PROT_NONE);
644	# endif	610	# endif
645		611
646	#else	612	#else
647		613
648	stack->ssize = STACKSIZE * (long)sizeof (long);	614	cctx->ssize = STACKSIZE * (long)sizeof (long);
649	New (0, stack->sptr, STACKSIZE, long);	615	New (0, cctx->sptr, STACKSIZE, long);
650		616
651	if (!stack->sptr)	617	if (!cctx->sptr)
652	{	618	{
653	perror (stderr, "FATAL: unable to malloc stack for coroutine");	619	perror ("FATAL: unable to malloc stack for coroutine");
654	_exit (EXIT_FAILURE);	620	_exit (EXIT_FAILURE);
655	}	621	}
656		622
657	#endif	623	#endif
658		624
		625	#if USE_VALGRIND
		626	cctx->valgrind_id = VALGRIND_STACK_REGISTER (
		627	STACKGUARD * PAGESIZE + (char *)cctx->sptr,
		628	cctx->ssize + (char *)cctx->sptr
		629	);
		630	#endif
		631
659	coro_create (&stack->cctx, coro_run, (void *)stack, stack->sptr, stack->ssize);	632	coro_create (&cctx->cctx, coro_run, (void *)cctx, cctx->sptr, cctx->ssize);
660		633
661	return stack;	634	return cctx;
662	}	635	}
663		636
664	static void	637	static void
665	stack_free (coro_stack *stack)	638	cctx_destroy (coro_cctx *cctx)
666	{	639	{
667	if (!stack)	640	if (!cctx)
668	return;	641	return;
669		642
		643	--cctx_count;
		644
		645	#if USE_VALGRIND
		646	VALGRIND_STACK_DEREGISTER (cctx->valgrind_id);
		647	#endif
		648
670	#if HAVE_MMAP	649	#if HAVE_MMAP
671	munmap (stack->sptr, stack->ssize);	650	munmap (cctx->sptr, cctx->ssize);
672	#else	651	#else
673	Safefree (stack->sptr);	652	Safefree (cctx->sptr);
674	#endif	653	#endif
675		654
676	Safefree (stack);	655	Safefree (cctx);
677	}	656	}
678		657
679	static coro_stack *stack_first;
680
681	static coro_stack *	658	static coro_cctx *
682	stack_get ()	659	cctx_get ()
683	{	660	{
684	coro_stack *stack;	661	coro_cctx *cctx;
685		662
686	if (stack_first)	663	if (cctx_first)
687	{	664	{
688	stack = stack_first;	665	cctx = cctx_first;
689	stack_first = stack->next;	666	cctx_first = cctx->next;
		667	--cctx_idle;
690	}	668	}
691	else	669	else
692	{	670	{
693	stack = stack_new ();	671	cctx = cctx_new ();
694	PL_op = PL_op->op_next;	672	PL_op = PL_op->op_next;
695	}	673	}
696		674
697	return stack;	675	return cctx;
698	}	676	}
699		677
700	static void	678	static void
701	stack_put (coro_stack *stack)	679	cctx_put (coro_cctx *cctx)
702	{	680	{
703	stack->next = stack_first;	681	/* free another cctx if overlimit */
704	stack_first = stack;	682	if (cctx_idle >= MAX_IDLE_CCTX)
		683	{
		684	coro_cctx *first = cctx_first;
		685	cctx_first = first->next;
		686	--cctx_idle;
		687
		688	assert (!first->inuse);
		689	cctx_destroy (first);
		690	}
		691
		692	++cctx_idle;
		693	cctx->next = cctx_first;
		694	cctx_first = cctx;
705	}	695	}
706		696
707	/* never call directly, always through the coro_state_transfer global variable */	697	/* never call directly, always through the coro_state_transfer global variable */
708	static void NOINLINE	698	static void NOINLINE
709	transfer (struct coro prev, struct coro next, int flags)	699	transfer (struct coro prev, struct coro next)
710	{	700	{
711	dSTACKLEVEL;	701	dSTACKLEVEL;
712		702
713	/* sometimes transfer is only called to set idle_sp */	703	/* sometimes transfer is only called to set idle_sp */
714	if (flags == TRANSFER_SET_STACKLEVEL)	704	if (!next)
		705	{
715	((coro_stack *)prev)->idle_sp = STACKLEVEL;	706	((coro_cctx *)prev)->idle_sp = STACKLEVEL;
		707	assert (((coro_cctx )prev)->top_env = PL_top_env); / just for the side effetc when assert is enabled */
		708	}
716	else if (prev != next)	709	else if (prev != next)
717	{	710	{
718	coro_stack *prev__stack;	711	coro_cctx *prev__cctx;
		712
		713	if (prev->flags & CF_NEW)
		714	{
		715	/* create a new empty context */
		716	Newz (0, prev->cctx, 1, coro_cctx);
		717	prev->cctx->inuse = 1;
		718	prev->flags &= ~CF_NEW;
		719	prev->flags \|= CF_RUNNING;
		720	}
		721
		722	/TODO: must not croak here /
		723	if (!prev->flags & CF_RUNNING)
		724	croak ("Coro::State::transfer called with non-running prev Coro::State, but can only transfer from running states");
		725
		726	if (next->flags & CF_RUNNING)
		727	croak ("Coro::State::transfer called with running next Coro::State, but can only transfer to inactive states");
		728
		729	prev->flags &= ~CF_RUNNING;
		730	next->flags \|= CF_RUNNING;
719		731
720	LOCK;	732	LOCK;
721		733
722	if (next->mainstack)	734	if (next->flags & CF_NEW)
723	{	735	{
724	/* coroutine already started */	736	/* need to start coroutine */
725	SAVE (prev, flags);	737	next->flags &= ~CF_NEW;
726	LOAD (next);	738	/* first get rid of the old state */
		739	save_perl (prev);
		740	/* setup coroutine call */
		741	setup_coro (next);
		742	/* need a new stack */
		743	assert (!next->cctx);
727	}	744	}
728	else	745	else
729	{	746	{
730	/* need to start coroutine */	747	/* coroutine already started */
731	/* first get rid of the old state */	748	save_perl (prev);
732	SAVE (prev, -1);	749	load_perl (next);
733	/* setup coroutine call */
734	setup_coro (next);
735	/* need a stack */
736	next->stack = 0;
737	}	750	}
738		751
739	if (!prev->stack)
740	/* create a new empty context */
741	Newz (0, prev->stack, 1, coro_stack);
742
743	prev__stack = prev->stack;	752	prev__cctx = prev->cctx;
744		753
745	/* possibly "free" the stack */	754	/* possibly "free" the cctx */
746	if (prev__stack->idle_sp == STACKLEVEL)	755	if (prev__cctx->idle_sp == STACKLEVEL)
747	{	756	{
748	stack_put (prev__stack);	757	/* I assume that STACKLEVEL is a stronger indicator than PL_top_env changes */
		758	assert (PL_top_env == prev__cctx->top_env);
		759
749	prev->stack = 0;	760	prev->cctx = 0;
		761
		762	cctx_put (prev__cctx);
		763	prev__cctx->inuse = 0;
750	}	764	}
751		765
752	if (!next->stack)	766	if (!next->cctx)
753	next->stack = stack_get ();
754
755	if (prev__stack != next->stack)
756	{	767	{
		768	next->cctx = cctx_get ();
		769	assert (!next->cctx->inuse);
		770	next->cctx->inuse = 1;
		771	}
		772
		773	if (prev__cctx != next->cctx)
		774	{
757	prev__stack->top_env = PL_top_env;	775	prev__cctx->top_env = PL_top_env;
758	PL_top_env = next->stack->top_env;	776	PL_top_env = next->cctx->top_env;
759	coro_transfer (&prev__stack->cctx, &next->stack->cctx);	777	coro_transfer (&prev__cctx->cctx, &next->cctx->cctx);
760	}	778	}
761		779
762	free_coro_mortal ();	780	free_coro_mortal ();
763		781
764	UNLOCK;	782	UNLOCK;
…		…
766	}	784	}
767		785
768	struct transfer_args	786	struct transfer_args
769	{	787	{
770	struct coro prev, next;	788	struct coro prev, next;
771	int flags;
772	};	789	};
773		790
774	#define TRANSFER(ta) transfer ((ta).prev, (ta).next, (ta).flags)	791	#define TRANSFER(ta) transfer ((ta).prev, (ta).next)
775		792
776	static void	793	static void
777	coro_state_destroy (struct coro *coro)	794	coro_state_destroy (struct coro *coro)
778	{	795	{
779	if (coro->refcnt--)	796	if (coro->refcnt--)
780	return;	797	return;
781		798
782	if (coro->mainstack && coro->mainstack != main_mainstack)	799	if (coro->mainstack && coro->mainstack != main_mainstack)
783	{	800	{
784	struct coro temp;	801	struct coro temp;
		802	Zero (&temp, 1, struct coro);
		803	temp.save = CORO_SAVE_ALL;
785		804
786	SAVE ((&temp), TRANSFER_SAVE_ALL);	805	if (coro->flags & CF_RUNNING)
787	LOAD (coro);	806	croak ("FATAL: tried to destroy currently running coroutine");
788		807
		808	save_perl (&temp);
		809	load_perl (coro);
		810
789	destroy_stacks ();	811	coro_destroy_stacks ();
790		812
791	LOAD ((&temp)); /* this will get rid of defsv etc.. */	813	load_perl (&temp); /* this will get rid of defsv etc.. */
792		814
793	coro->mainstack = 0;	815	coro->mainstack = 0;
794	}	816	}
795		817
796	stack_free (coro->stack);	818	cctx_destroy (coro->cctx);
797	SvREFCNT_dec (coro->args);	819	SvREFCNT_dec (coro->args);
798	Safefree (coro);	820	Safefree (coro);
799	}	821	}
800		822
801	static int	823	static int
…		…
823	0, 0, 0, 0,	845	0, 0, 0, 0,
824	coro_state_clear,	846	coro_state_clear,
825	0,	847	0,
826	#ifdef MGf_DUP	848	#ifdef MGf_DUP
827	coro_state_dup,	849	coro_state_dup,
		850	#else
		851	# define MGf_DUP 0
828	#endif	852	#endif
829	};	853	};
830		854
831	static struct coro *	855	static struct coro *
832	SvSTATE (SV *coro)	856	SvSTATE (SV *coro)
…		…
849	assert (mg->mg_type == PERL_MAGIC_ext);	873	assert (mg->mg_type == PERL_MAGIC_ext);
850	return (struct coro *)mg->mg_ptr;	874	return (struct coro *)mg->mg_ptr;
851	}	875	}
852		876
853	static void	877	static void
854	prepare_transfer (struct transfer_args ta, SV prev, SV *next, int flags)	878	prepare_transfer (struct transfer_args ta, SV prev_sv, SV *next_sv)
855	{	879	{
856	ta->prev = SvSTATE (prev);	880	ta->prev = SvSTATE (prev_sv);
857	ta->next = SvSTATE (next);	881	ta->next = SvSTATE (next_sv);
858	ta->flags = flags;
859	}	882	}
860		883
861	static void	884	static void
862	api_transfer (SV prev, SV next, int flags)	885	api_transfer (SV prev_sv, SV next_sv)
863	{	886	{
864	dTHX;
865	struct transfer_args ta;	887	struct transfer_args ta;
866		888
867	prepare_transfer (&ta, prev, next, flags);	889	prepare_transfer (&ta, prev_sv, next_sv);
868	TRANSFER (ta);	890	TRANSFER (ta);
		891	}
		892
		893	static int
		894	api_save (SV *coro_sv, int new_save)
		895	{
		896	struct coro *coro = SvSTATE (coro_sv);
		897	int old_save = coro->save;
		898
		899	if (new_save >= 0)
		900	coro->save = new_save;
		901
		902	return old_save;
869	}	903	}
870		904
871	/ Coro ******************************************************************/	905	/ Coro ******************************************************************/
872		906
873	#define PRIO_MAX 3	907	#define PRIO_MAX 3
…		…
876	#define PRIO_LOW -1	910	#define PRIO_LOW -1
877	#define PRIO_IDLE -3	911	#define PRIO_IDLE -3
878	#define PRIO_MIN -4	912	#define PRIO_MIN -4
879		913
880	/* for Coro.pm */	914	/* for Coro.pm */
881	static GV coro_current, coro_idle;	915	static SV *coro_current;
882	static AV *coro_ready [PRIO_MAX-PRIO_MIN+1];	916	static AV *coro_ready [PRIO_MAX-PRIO_MIN+1];
883	static int coro_nready;	917	static int coro_nready;
884		918
885	static void	919	static void
886	coro_enq (SV *sv)	920	coro_enq (SV *coro_sv)
887	{	921	{
888	int prio;
889
890	if (SvTYPE (sv) != SVt_PVHV)
891	croak ("Coro::ready tried to enqueue something that is not a coroutine");
892
893	prio = SvSTATE (sv)->prio;
894
895	av_push (coro_ready [prio - PRIO_MIN], sv);	922	av_push (coro_ready [SvSTATE (coro_sv)->prio - PRIO_MIN], coro_sv);
896	coro_nready++;	923	coro_nready++;
897	}	924	}
898		925
899	static SV *	926	static SV *
900	coro_deq (int min_prio)	927	coro_deq (int min_prio)
…		…
913	}	940	}
914		941
915	return 0;	942	return 0;
916	}	943	}
917		944
918	static void	945	static int
919	api_ready (SV *coro)	946	api_ready (SV *coro_sv)
920	{	947	{
921	dTHX;	948	struct coro *coro;
922		949
923	if (SvROK (coro))	950	if (SvROK (coro_sv))
924	coro = SvRV (coro);	951	coro_sv = SvRV (coro_sv);
		952
		953	coro = SvSTATE (coro_sv);
		954
		955	if (coro->flags & CF_READY)
		956	return 0;
		957
		958	#if 0 /* this is actually harmless */
		959	if (coro->flags & CF_RUNNING)
		960	croak ("Coro::ready called on currently running coroutine");
		961	#endif
		962
		963	coro->flags \|= CF_READY;
925		964
926	LOCK;	965	LOCK;
927	coro_enq (SvREFCNT_inc (coro));	966	coro_enq (SvREFCNT_inc (coro_sv));
928	UNLOCK;	967	UNLOCK;
		968
		969	return 1;
		970	}
		971
		972	static int
		973	api_is_ready (SV *coro_sv)
		974	{
		975	return !!SvSTATE (coro_sv)->flags & CF_READY;
929	}	976	}
930		977
931	static void	978	static void
932	prepare_schedule (struct transfer_args *ta)	979	prepare_schedule (struct transfer_args *ta)
933	{	980	{
934	SV current, prev, *next;	981	SV prev, next;
935
936	current = GvSV (coro_current);
937		982
938	for (;;)	983	for (;;)
939	{	984	{
940	LOCK;	985	LOCK;
941	next = coro_deq (PRIO_MIN);	986	next = coro_deq (PRIO_MIN);
…		…
950	ENTER;	995	ENTER;
951	SAVETMPS;	996	SAVETMPS;
952		997
953	PUSHMARK (SP);	998	PUSHMARK (SP);
954	PUTBACK;	999	PUTBACK;
955	call_sv (GvSV (coro_idle), G_DISCARD);	1000	call_sv (get_sv ("Coro::idle", FALSE), G_DISCARD);
956		1001
957	FREETMPS;	1002	FREETMPS;
958	LEAVE;	1003	LEAVE;
959	}	1004	}
960	}	1005	}
961		1006
962	prev = SvRV (current);	1007	prev = SvRV (coro_current);
963	SvRV (current) = next;	1008	SvRV_set (coro_current, next);
964		1009
965	/* free this only after the transfer */	1010	/* free this only after the transfer */
966	LOCK;	1011	LOCK;
967	free_coro_mortal ();	1012	free_coro_mortal ();
968	UNLOCK;	1013	UNLOCK;
969	coro_mortal = prev;	1014	coro_mortal = prev;
970		1015
		1016	assert (!SvROK(prev));//D
		1017	assert (!SvROK(next));//D
		1018
971	ta->prev = SvSTATE (prev);	1019	ta->prev = SvSTATE (prev);
972	ta->next = SvSTATE (next);	1020	ta->next = SvSTATE (next);
973	ta->flags = TRANSFER_SAVE_ALL;	1021
		1022	assert (ta->next->flags & CF_READY);
		1023	ta->next->flags &= ~CF_READY;
974	}	1024	}
975		1025
976	static void	1026	static void
977	prepare_cede (struct transfer_args *ta)	1027	prepare_cede (struct transfer_args *ta)
978	{	1028	{
979	LOCK;	1029	api_ready (coro_current);
980	coro_enq (SvREFCNT_inc (SvRV (GvSV (coro_current))));
981	UNLOCK;
982		1030
983	prepare_schedule (ta);	1031	prepare_schedule (ta);
984	}	1032	}
985		1033
986	static void	1034	static void
987	api_schedule (void)	1035	api_schedule (void)
988	{	1036	{
989	dTHX;
990	struct transfer_args ta;	1037	struct transfer_args ta;
991		1038
992	prepare_schedule (&ta);	1039	prepare_schedule (&ta);
993	TRANSFER (ta);	1040	TRANSFER (ta);
994	}	1041	}
995		1042
996	static void	1043	static void
997	api_cede (void)	1044	api_cede (void)
998	{	1045	{
999	dTHX;
1000	struct transfer_args ta;	1046	struct transfer_args ta;
1001		1047
1002	prepare_cede (&ta);	1048	prepare_cede (&ta);
1003	TRANSFER (ta);	1049	TRANSFER (ta);
1004	}	1050	}
…		…
1014	#endif	1060	#endif
1015	BOOT_PAGESIZE;	1061	BOOT_PAGESIZE;
1016		1062
1017	coro_state_stash = gv_stashpv ("Coro::State", TRUE);	1063	coro_state_stash = gv_stashpv ("Coro::State", TRUE);
1018		1064
1019	newCONSTSUB (coro_state_stash, "SAVE_DEFAV", newSViv (TRANSFER_SAVE_DEFAV));	1065	newCONSTSUB (coro_state_stash, "SAVE_DEFAV", newSViv (CORO_SAVE_DEFAV));
1020	newCONSTSUB (coro_state_stash, "SAVE_DEFSV", newSViv (TRANSFER_SAVE_DEFSV));	1066	newCONSTSUB (coro_state_stash, "SAVE_DEFSV", newSViv (CORO_SAVE_DEFSV));
1021	newCONSTSUB (coro_state_stash, "SAVE_ERRSV", newSViv (TRANSFER_SAVE_ERRSV));	1067	newCONSTSUB (coro_state_stash, "SAVE_ERRSV", newSViv (CORO_SAVE_ERRSV));
		1068	newCONSTSUB (coro_state_stash, "SAVE_IRSSV", newSViv (CORO_SAVE_IRSSV));
		1069	newCONSTSUB (coro_state_stash, "SAVE_ALL", newSViv (CORO_SAVE_ALL));
1022		1070
1023	main_mainstack = PL_mainstack;	1071	main_mainstack = PL_mainstack;
1024		1072
1025	coroapi.ver = CORO_API_VERSION;	1073	coroapi.ver = CORO_API_VERSION;
1026	coroapi.transfer = api_transfer;	1074	coroapi.transfer = api_transfer;
…		…
1036	HV *hv;	1084	HV *hv;
1037	int i;	1085	int i;
1038		1086
1039	Newz (0, coro, 1, struct coro);	1087	Newz (0, coro, 1, struct coro);
1040	coro->args = newAV ();	1088	coro->args = newAV ();
		1089	coro->save = CORO_SAVE_ALL;
		1090	coro->flags = CF_NEW;
1041		1091
1042	hv = newHV ();	1092	hv = newHV ();
1043	sv_magicext ((SV )hv, 0, PERL_MAGIC_ext, &coro_state_vtbl, (char )coro, 0)->mg_flags \|= MGf_DUP;	1093	sv_magicext ((SV )hv, 0, PERL_MAGIC_ext, &coro_state_vtbl, (char )coro, 0)->mg_flags \|= MGf_DUP;
1044	RETVAL = sv_bless (newRV_noinc ((SV *)hv), gv_stashpv (klass, 1));	1094	RETVAL = sv_bless (newRV_noinc ((SV *)hv), gv_stashpv (klass, 1));
1045		1095
1046	for (i = 1; i < items; i++)	1096	for (i = 1; i < items; i++)
1047	av_push (coro->args, newSVsv (ST (i)));	1097	av_push (coro->args, newSVsv (ST (i)));
1048
1049	/coro->mainstack = 0; //actual work is done inside transfer /
1050	/coro->stack = 0;/
1051	}	1098	}
1052	OUTPUT:	1099	OUTPUT:
		1100	RETVAL
		1101
		1102	int
		1103	save (SV *coro, int new_save = -1)
		1104	CODE:
		1105	RETVAL = api_save (coro, new_save);
		1106	OUTPUT:
1053	RETVAL	1107	RETVAL
1054		1108
1055	void	1109	void
1056	_set_stacklevel (...)	1110	_set_stacklevel (...)
1057	ALIAS:	1111	ALIAS:
1058	Coro::State::transfer = 1	1112	Coro::State::transfer = 1
1059	Coro::schedule = 2	1113	Coro::schedule = 2
1060	Coro::cede = 3	1114	Coro::cede = 3
1061	Coro::Cont::yield = 4
1062	CODE:	1115	CODE:
1063	{	1116	{
1064	struct transfer_args ta;	1117	struct transfer_args ta;
1065		1118
1066	switch (ix)	1119	switch (ix)
1067	{	1120	{
1068	case 0:	1121	case 0:
1069	ta.prev = (struct coro )INT2PTR (coro_stack , SvIV (ST (0)));	1122	ta.prev = (struct coro )INT2PTR (coro_cctx , SvIV (ST (0)));
1070	ta.next = 0;	1123	ta.next = 0;
1071	ta.flags = TRANSFER_SET_STACKLEVEL;
1072	break;	1124	break;
1073		1125
1074	case 1:	1126	case 1:
1075	if (items != 3)	1127	if (items != 2)
1076	croak ("Coro::State::transfer(prev,next,flags) expects three arguments, not %d", items);	1128	croak ("Coro::State::transfer (prev,next) expects two arguments, not %d", items);
1077		1129
1078	prepare_transfer (&ta, ST (0), ST (1), SvIV (ST (2)));	1130	prepare_transfer (&ta, ST (0), ST (1));
1079	break;	1131	break;
1080		1132
1081	case 2:	1133	case 2:
1082	prepare_schedule (&ta);	1134	prepare_schedule (&ta);
1083	break;	1135	break;
1084		1136
1085	case 3:	1137	case 3:
1086	prepare_cede (&ta);	1138	prepare_cede (&ta);
1087	break;	1139	break;
1088
1089	case 4:
1090	{
1091	SV *yieldstack;
1092	SV *sv;
1093	AV *defav = GvAV (PL_defgv);
1094
1095	yieldstack = *hv_fetch (
1096	(HV *)SvRV (GvSV (coro_current)),
1097	"yieldstack", sizeof ("yieldstack") - 1,
1098	0
1099	);
1100
1101	/* set up @_ -- ugly */
1102	av_clear (defav);
1103	av_fill (defav, items - 1);
1104	while (items--)
1105	av_store (defav, items, SvREFCNT_inc (ST(items)));
1106
1107	sv = av_pop ((AV *)SvRV (yieldstack));
1108	ta.prev = SvSTATE (av_fetch ((AV )SvRV (sv), 0, 0));
1109	ta.next = SvSTATE (av_fetch ((AV )SvRV (sv), 1, 0));
1110	ta.flags = 0;
1111	SvREFCNT_dec (sv);
1112	}
1113	break;
1114
1115	}	1140	}
1116		1141
1117	TRANSFER (ta);	1142	TRANSFER (ta);
1118	}	1143	}
1119		1144
…		…
1134	int code	1159	int code
1135	PROTOTYPE: $	1160	PROTOTYPE: $
1136	CODE:	1161	CODE:
1137	_exit (code);	1162	_exit (code);
1138		1163
		1164	int
		1165	cctx_count ()
		1166	CODE:
		1167	RETVAL = cctx_count;
		1168	OUTPUT:
		1169	RETVAL
		1170
		1171	int
		1172	cctx_idle ()
		1173	CODE:
		1174	RETVAL = cctx_idle;
		1175	OUTPUT:
		1176	RETVAL
		1177
1139	MODULE = Coro::State PACKAGE = Coro	1178	MODULE = Coro::State PACKAGE = Coro
1140		1179
1141	BOOT:	1180	BOOT:
1142	{	1181	{
1143	int i;	1182	int i;
…		…
1149	newCONSTSUB (coro_stash, "PRIO_NORMAL", newSViv (PRIO_NORMAL));	1188	newCONSTSUB (coro_stash, "PRIO_NORMAL", newSViv (PRIO_NORMAL));
1150	newCONSTSUB (coro_stash, "PRIO_LOW", newSViv (PRIO_LOW));	1189	newCONSTSUB (coro_stash, "PRIO_LOW", newSViv (PRIO_LOW));
1151	newCONSTSUB (coro_stash, "PRIO_IDLE", newSViv (PRIO_IDLE));	1190	newCONSTSUB (coro_stash, "PRIO_IDLE", newSViv (PRIO_IDLE));
1152	newCONSTSUB (coro_stash, "PRIO_MIN", newSViv (PRIO_MIN));	1191	newCONSTSUB (coro_stash, "PRIO_MIN", newSViv (PRIO_MIN));
1153		1192
1154	coro_current = gv_fetchpv ("Coro::current", TRUE, SVt_PV);	1193	coro_current = get_sv ("Coro::current", FALSE);
1155	coro_idle = gv_fetchpv ("Coro::idle" , TRUE, SVt_PV);	1194	SvREADONLY_on (coro_current);
1156		1195
1157	for (i = PRIO_MAX - PRIO_MIN + 1; i--; )	1196	for (i = PRIO_MAX - PRIO_MIN + 1; i--; )
1158	coro_ready[i] = newAV ();	1197	coro_ready[i] = newAV ();
1159		1198
1160	{	1199	{
1161	SV *sv = perl_get_sv("Coro::API", 1);	1200	SV *sv = perl_get_sv("Coro::API", 1);
1162		1201
1163	coroapi.schedule = api_schedule;	1202	coroapi.schedule = api_schedule;
		1203	coroapi.save = api_save;
1164	coroapi.cede = api_cede;	1204	coroapi.cede = api_cede;
1165	coroapi.ready = api_ready;	1205	coroapi.ready = api_ready;
		1206	coroapi.is_ready = api_is_ready;
1166	coroapi.nready = &coro_nready;	1207	coroapi.nready = &coro_nready;
1167	coroapi.current = coro_current;	1208	coroapi.current = coro_current;
1168		1209
1169	GCoroAPI = &coroapi;	1210	GCoroAPI = &coroapi;
1170	sv_setiv (sv, (IV)&coroapi);	1211	sv_setiv (sv, (IV)&coroapi);
1171	SvREADONLY_on (sv);	1212	SvREADONLY_on (sv);
1172	}	1213	}
1173	}	1214	}
		1215
		1216	void
		1217	_set_current (SV *current)
		1218	PROTOTYPE: $
		1219	CODE:
		1220	SvREFCNT_dec (SvRV (coro_current));
		1221	SvRV_set (coro_current, SvREFCNT_inc (SvRV (current)));
1174		1222
1175	int	1223	int
1176	prio (Coro::State coro, int newprio = 0)	1224	prio (Coro::State coro, int newprio = 0)
1177	ALIAS:	1225	ALIAS:
1178	nice = 1	1226	nice = 1
…		…
1190		1238
1191	coro->prio = newprio;	1239	coro->prio = newprio;
1192	}	1240	}
1193	}	1241	}
1194		1242
1195	void	1243	SV *
1196	ready (SV *self)	1244	ready (SV *self)
1197	PROTOTYPE: $	1245	PROTOTYPE: $
1198	CODE:	1246	CODE:
1199	api_ready (self);	1247	RETVAL = boolSV (api_ready (self));
		1248	OUTPUT:
		1249	RETVAL
		1250
		1251	SV *
		1252	is_ready (SV *self)
		1253	PROTOTYPE: $
		1254	CODE:
		1255	RETVAL = boolSV (api_is_ready (self));
		1256	OUTPUT:
		1257	RETVAL
1200		1258
1201	int	1259	int
1202	nready (...)	1260	nready (...)
1203	PROTOTYPE:	1261	PROTOTYPE:
1204	CODE:	1262	CODE:
…		…
1210		1268
1211	SV *	1269	SV *
1212	_get_state ()	1270	_get_state ()
1213	CODE:	1271	CODE:
1214	{	1272	{
1215	struct {	1273	struct io_state *data;
1216	int errorno;
1217	int laststype;
1218	int laststatval;
1219	Stat_t statcache;
1220	} data;
1221		1274
		1275	RETVAL = newSV (sizeof (struct io_state));
		1276	data = (struct io_state *)SvPVX (RETVAL);
		1277	SvCUR_set (RETVAL, sizeof (struct io_state));
		1278	SvPOK_only (RETVAL);
		1279
1222	data.errorno = errno;	1280	data->errorno = errno;
1223	data.laststype = PL_laststype;	1281	data->laststype = PL_laststype;
1224	data.laststatval = PL_laststatval;	1282	data->laststatval = PL_laststatval;
1225	data.statcache = PL_statcache;	1283	data->statcache = PL_statcache;
1226
1227	RETVAL = newSVpvn ((char *)&data, sizeof data);
1228	}	1284	}
1229	OUTPUT:	1285	OUTPUT:
1230	RETVAL	1286	RETVAL
1231		1287
1232	void	1288	void
1233	_set_state (char *data_)	1289	_set_state (char *data_)
1234	PROTOTYPE: $	1290	PROTOTYPE: $
1235	CODE:	1291	CODE:
1236	{	1292	{
1237	struct {	1293	struct io_state data = (void )data_;
1238	int errorno;
1239	int laststype;
1240	int laststatval;
1241	Stat_t statcache;
1242	} data = (void )data_;
1243		1294
1244	errno = data->errorno;	1295	errno = data->errorno;
1245	PL_laststype = data->laststype;	1296	PL_laststype = data->laststype;
1246	PL_laststatval = data->laststatval;	1297	PL_laststatval = data->laststatval;
1247	PL_statcache = data->statcache;	1298	PL_statcache = data->statcache;
1248	}	1299	}
		1300

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Comparing Coro/Coro/State.xs (file contents): Revision 1.101 by root, Mon Nov 27 00:08:18 2006 UTC vs. Revision 1.126 by root, Tue Dec 12 04:19:56 2006 UTC

Diff Legend

Comparing Coro/Coro/State.xs (file contents):
Revision 1.101 by root, Mon Nov 27 00:08:18 2006 UTC vs.
Revision 1.126 by root, Tue Dec 12 04:19:56 2006 UTC