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

Comparing Coro/Coro/State.xs (file contents):
Revision 1.106 by root, Mon Nov 27 02:08:55 2006 UTC vs.
Revision 1.132 by root, Fri Dec 29 13:03:05 2006 UTC

…		…
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		8
9	#if USE_VALGRIND
10	# include <valgrind/valgrind.h>
11	#endif
12
13	#define PERL_VERSION_ATLEAST(a,b,c) \
14	(PERL_REVISION > (a) \
15	\|\| (PERL_REVISION == (a) \
16	&& (PERL_VERSION > (b) \
17	\|\| (PERL_VERSION == (b) && PERLSUBVERSION >= (c)))))
18
19	#if !PERL_VERSION_ATLEAST (5,6,0)
20	# ifndef PL_ppaddr
21	# define PL_ppaddr ppaddr
22	# endif
23	# ifndef call_sv
24	# define call_sv perl_call_sv
25	# endif
26	# ifndef get_sv
27	# define get_sv perl_get_sv
28	# endif
29	# ifndef get_cv
30	# define get_cv perl_get_cv
31	# endif
32	# ifndef IS_PADGV
33	# define IS_PADGV(v) 0
34	# endif
35	# ifndef IS_PADCONST
36	# define IS_PADCONST(v) 0
37	# endif
38	#endif
39
40	#include <stdio.h>	9	#include <stdio.h>
41	#include <errno.h>	10	#include <errno.h>
42		11	#include <assert.h>
43	#if !__i386 && !__x86_64 && !__powerpc && !__m68k && !__alpha && !__mips && !__sparc64
44	# undef STACKGUARD
45	#endif
46
47	#ifndef STACKGUARD
48	# define STACKGUARD 0
49	#endif
50		12
51	#ifdef HAVE_MMAP	13	#ifdef HAVE_MMAP
52	# include <unistd.h>	14	# include <unistd.h>
53	# include <sys/mman.h>	15	# include <sys/mman.h>
54	# ifndef MAP_ANONYMOUS	16	# ifndef MAP_ANONYMOUS
…		…
69	#else	31	#else
70	# define PAGESIZE 0	32	# define PAGESIZE 0
71	# define BOOT_PAGESIZE (void)0	33	# define BOOT_PAGESIZE (void)0
72	#endif	34	#endif
73		35
		36	#if USE_VALGRIND
		37	# include <valgrind/valgrind.h>
		38	#endif
		39
		40	/* the maximum number of idle cctx that will be pooled */
		41	#define MAX_IDLE_CCTX 8
		42
		43	#define PERL_VERSION_ATLEAST(a,b,c) \
		44	(PERL_REVISION > (a) \
		45	\|\| (PERL_REVISION == (a) \
		46	&& (PERL_VERSION > (b) \
		47	\|\| (PERL_VERSION == (b) && PERLSUBVERSION >= (c)))))
		48
		49	#if !PERL_VERSION_ATLEAST (5,6,0)
		50	# ifndef PL_ppaddr
		51	# define PL_ppaddr ppaddr
		52	# endif
		53	# ifndef call_sv
		54	# define call_sv perl_call_sv
		55	# endif
		56	# ifndef get_sv
		57	# define get_sv perl_get_sv
		58	# endif
		59	# ifndef get_cv
		60	# define get_cv perl_get_cv
		61	# endif
		62	# ifndef IS_PADGV
		63	# define IS_PADGV(v) 0
		64	# endif
		65	# ifndef IS_PADCONST
		66	# define IS_PADCONST(v) 0
		67	# endif
		68	#endif
		69
		70	/* 5.8.7 */
		71	#ifndef SvRV_set
		72	# define SvRV_set(s,v) SvRV(s) = (v)
		73	#endif
		74
		75	#if !__i386 && !__x86_64 && !__powerpc && !__m68k && !__alpha && !__mips && !__sparc64
		76	# undef STACKGUARD
		77	#endif
		78
		79	#ifndef STACKGUARD
		80	# define STACKGUARD 0
		81	#endif
		82
		83	/* prefer perl internal functions over our own? */
		84	#ifndef PREFER_PERL_FUNCTIONS
		85	# define PREFER_PERL_FUNCTIONS 0
		86	#endif
		87
74	/* 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
75	* 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
76	* and should be unique. */	90	* and should be unique. */
77	#define dSTACKLEVEL int stacklevel	91	#define dSTACKLEVEL int stacklevel
78	#define STACKLEVEL ((void *)&stacklevel)	92	#define STACKLEVEL ((void *)&stacklevel)
79		93
80	#define IN_DESTRUCT (PL_main_cv == Nullcv)	94	#define IN_DESTRUCT (PL_main_cv == Nullcv)
81		95
82	#if __GNUC__ >= 3	96	#if __GNUC__ >= 3
83	# define attribute(x) __attribute__(x)	97	# define attribute(x) __attribute__(x)
		98	# define BARRIER __asm__ __volatile__ ("" : : : "memory")
84	#else	99	#else
85	# define attribute(x)	100	# define attribute(x)
		101	# define BARRIER
86	#endif	102	#endif
87		103
88	#define NOINLINE attribute ((noinline))	104	#define NOINLINE attribute ((noinline))
89		105
90	#include "CoroAPI.h"	106	#include "CoroAPI.h"
91
92	#define TRANSFER_SET_STACKLEVEL 0x8bfbfbfb /* magic cookie */
93		107
94	#ifdef USE_ITHREADS	108	#ifdef USE_ITHREADS
95	static perl_mutex coro_mutex;	109	static perl_mutex coro_mutex;
96	# define LOCK do { MUTEX_LOCK (&coro_mutex); } while (0)	110	# define LOCK do { MUTEX_LOCK (&coro_mutex); } while (0)
97	# define UNLOCK do { MUTEX_UNLOCK (&coro_mutex); } while (0)	111	# define UNLOCK do { MUTEX_UNLOCK (&coro_mutex); } while (0)
98	#else	112	#else
99	# define LOCK (void)0	113	# define LOCK (void)0
100	# define UNLOCK (void)0	114	# define UNLOCK (void)0
101	#endif	115	#endif
102		116
		117	struct io_state
		118	{
		119	int errorno;
		120	I32 laststype;
		121	int laststatval;
		122	Stat_t statcache;
		123	};
		124
103	static struct CoroAPI coroapi;	125	static struct CoroAPI coroapi;
104	static AV main_mainstack; / used to differentiate between $main and others */	126	static AV main_mainstack; / used to differentiate between $main and others */
105	static HV coro_state_stash, coro_stash;	127	static HV coro_state_stash, coro_stash;
106	static SV coro_mortal; / will be freed after next transfer */	128	static SV coro_mortal; / will be freed after next transfer */
107		129
		130	static struct coro_cctx *cctx_first;
		131	static int cctx_count, cctx_idle;
		132
108	/* this is a structure representing a c-level coroutine */	133	/* this is a structure representing a c-level coroutine */
109	typedef struct coro_cctx {	134	typedef struct coro_cctx {
110	struct coro_cctx *next;	135	struct coro_cctx *next;
111		136
112	/* the stack */	137	/* the stack */
113	void *sptr;	138	void *sptr;
114	long ssize; /* positive == mmap, otherwise malloc */	139	long ssize; /* positive == mmap, otherwise malloc */
115		140
116	/* cpu state */	141	/* cpu state */
117	void idle_sp; / sp of top-level transfer/schedule/cede call */	142	void idle_sp; / sp of top-level transfer/schedule/cede call */
		143	JMPENV idle_te; / same as idle_sp, but for top_env, TODO: remove once stable */
118	JMPENV *top_env;	144	JMPENV *top_env;
119	coro_context cctx;	145	coro_context cctx;
120		146
		147	int inuse;
		148
121	#if USE_VALGRIND	149	#if USE_VALGRIND
122	int valgrind_id;	150	int valgrind_id;
123	#endif	151	#endif
124	} coro_cctx;	152	} coro_cctx;
		153
		154	enum {
		155	CF_RUNNING = 0x0001, /* coroutine is running */
		156	CF_READY = 0x0002, /* coroutine is ready */
		157	CF_NEW = 0x0004, /* ahs never been switched to */
		158	};
125		159
126	/* this is a structure representing a perl-level coroutine */	160	/* this is a structure representing a perl-level coroutine */
127	struct coro {	161	struct coro {
128	/* the c coroutine allocated to this perl coroutine, if any */	162	/* the c coroutine allocated to this perl coroutine, if any */
129	coro_cctx *cctx;	163	coro_cctx *cctx;
130		164
131	/* data associated with this coroutine (initial args) */	165	/* data associated with this coroutine (initial args) */
132	AV *args;	166	AV *args;
133	int refcnt;	167	int refcnt;
		168	int save; /* CORO_SAVE flags */
		169	int flags; /* CF_ flags */
134		170
135	/* optionally saved, might be zero */	171	/* optionally saved, might be zero */
136	AV *defav;	172	AV defav; / @_ */
137	SV *defsv;	173	SV defsv; / $_ */
138	SV *errsv;	174	SV errsv; / $@ */
		175	SV irssv; / $/ */
		176	SV irssv_sv; / real $/ cache */
139		177
140	/* saved global state not related to stacks */	178	#define VAR(name,type) type name;
141	U8 dowarn;	179	# include "state.h"
142	I32 in_eval;	180	#undef VAR
143
144	/* the stacks and related info (callchain etc..) */
145	PERL_SI *curstackinfo;
146	AV *curstack;
147	AV *mainstack;
148	SV **stack_sp;
149	OP *op;
150	SV **curpad;
151	AV *comppad;
152	CV *compcv;
153	SV **stack_base;
154	SV **stack_max;
155	SV **tmps_stack;
156	I32 tmps_floor;
157	I32 tmps_ix;
158	I32 tmps_max;
159	I32 *markstack;
160	I32 *markstack_ptr;
161	I32 *markstack_max;
162	I32 *scopestack;
163	I32 scopestack_ix;
164	I32 scopestack_max;
165	ANY *savestack;
166	I32 savestack_ix;
167	I32 savestack_max;
168	OP **retstack;
169	I32 retstack_ix;
170	I32 retstack_max;
171	PMOP *curpm;
172	COP *curcop;
173		181
174	/* coro process data */	182	/* coro process data */
175	int prio;	183	int prio;
176	};	184	};
177		185
…		…
241		249
242	#define PERL_MAGIC_coro PERL_MAGIC_ext	250	#define PERL_MAGIC_coro PERL_MAGIC_ext
243		251
244	static MGVTBL vtbl_coro = {0, 0, 0, 0, coro_cv_free};	252	static MGVTBL vtbl_coro = {0, 0, 0, 0, coro_cv_free};
245		253
		254	#define CORO_MAGIC(cv) \
		255	SvMAGIC (cv) \
		256	? SvMAGIC (cv)->mg_type == PERL_MAGIC_coro \
		257	? SvMAGIC (cv) \
		258	: mg_find ((SV *)cv, PERL_MAGIC_coro) \
		259	: 0
		260
246	/* the next two functions merely cache the padlists */	261	/* the next two functions merely cache the padlists */
247	static void	262	static void
248	get_padlist (CV *cv)	263	get_padlist (CV *cv)
249	{	264	{
250	MAGIC mg = mg_find ((SV )cv, PERL_MAGIC_coro);	265	MAGIC *mg = CORO_MAGIC (cv);
		266	AV *av;
251		267
252	if (mg && AvFILLp ((AV *)mg->mg_obj) >= 0)	268	if (mg && AvFILLp ((av = (AV *)mg->mg_obj)) >= 0)
253	CvPADLIST (cv) = (AV )av_pop ((AV )mg->mg_obj);	269	CvPADLIST (cv) = (AV *)AvARRAY (av)[AvFILLp (av)--];
254	else	270	else
255	{	271	{
256	#if 0	272	#if PREFER_PERL_FUNCTIONS
257	/* this is probably cleaner, but also slower? */	273	/* this is probably cleaner, but also slower? */
258	CV *cp = Perl_cv_clone (cv);	274	CV *cp = Perl_cv_clone (cv);
259	CvPADLIST (cv) = CvPADLIST (cp);	275	CvPADLIST (cv) = CvPADLIST (cp);
260	CvPADLIST (cp) = 0;	276	CvPADLIST (cp) = 0;
261	SvREFCNT_dec (cp);	277	SvREFCNT_dec (cp);
…		…
266	}	282	}
267		283
268	static void	284	static void
269	put_padlist (CV *cv)	285	put_padlist (CV *cv)
270	{	286	{
271	MAGIC mg = mg_find ((SV )cv, PERL_MAGIC_coro);	287	MAGIC *mg = CORO_MAGIC (cv);
		288	AV *av;
272		289
273	if (!mg)	290	if (!mg)
274	{	291	{
275	sv_magic ((SV *)cv, 0, PERL_MAGIC_coro, 0, 0);	292	sv_magic ((SV *)cv, 0, PERL_MAGIC_coro, 0, 0);
276	mg = mg_find ((SV *)cv, PERL_MAGIC_coro);	293	mg = mg_find ((SV *)cv, PERL_MAGIC_coro);
277	mg->mg_virtual = &vtbl_coro;	294	mg->mg_virtual = &vtbl_coro;
278	mg->mg_obj = (SV *)newAV ();	295	mg->mg_obj = (SV *)newAV ();
279	}	296	}
280		297
281	av_push ((AV )mg->mg_obj, (SV )CvPADLIST (cv));	298	av = (AV *)mg->mg_obj;
		299
		300	if (AvFILLp (av) >= AvMAX (av))
		301	av_extend (av, AvMAX (av) + 1);
		302
		303	AvARRAY (av)[++AvFILLp (av)] = (SV *)CvPADLIST (cv);
282	}	304	}
283		305
284	#define SB do {	306	#define SB do {
285	#define SE } while (0)	307	#define SE } while (0)
286		308
287	#define LOAD(state) load_state((state));
288	#define SAVE(state,flags) save_state((state),(flags));
289
290	#define REPLACE_SV(sv,val) SB SvREFCNT_dec(sv); (sv) = (val); (val) = 0; SE	309	#define REPLACE_SV(sv,val) SB SvREFCNT_dec (sv); (sv) = (val); (val) = 0; SE
291		310
292	static void	311	static void
293	load_state(Coro__State c)	312	load_perl (Coro__State c)
294	{	313	{
295	PL_dowarn = c->dowarn;	314	#define VAR(name,type) PL_ ## name = c->name;
296	PL_in_eval = c->in_eval;	315	# include "state.h"
297		316	#undef VAR
298	PL_curstackinfo = c->curstackinfo;
299	PL_curstack = c->curstack;
300	PL_mainstack = c->mainstack;
301	PL_stack_sp = c->stack_sp;
302	PL_op = c->op;
303	PL_curpad = c->curpad;
304	PL_comppad = c->comppad;
305	PL_compcv = c->compcv;
306	PL_stack_base = c->stack_base;
307	PL_stack_max = c->stack_max;
308	PL_tmps_stack = c->tmps_stack;
309	PL_tmps_floor = c->tmps_floor;
310	PL_tmps_ix = c->tmps_ix;
311	PL_tmps_max = c->tmps_max;
312	PL_markstack = c->markstack;
313	PL_markstack_ptr = c->markstack_ptr;
314	PL_markstack_max = c->markstack_max;
315	PL_scopestack = c->scopestack;
316	PL_scopestack_ix = c->scopestack_ix;
317	PL_scopestack_max = c->scopestack_max;
318	PL_savestack = c->savestack;
319	PL_savestack_ix = c->savestack_ix;
320	PL_savestack_max = c->savestack_max;
321	#if !PERL_VERSION_ATLEAST (5,9,0)
322	PL_retstack = c->retstack;
323	PL_retstack_ix = c->retstack_ix;
324	PL_retstack_max = c->retstack_max;
325	#endif
326	PL_curpm = c->curpm;
327	PL_curcop = c->curcop;
328		317
329	if (c->defav) REPLACE_SV (GvAV (PL_defgv), c->defav);	318	if (c->defav) REPLACE_SV (GvAV (PL_defgv), c->defav);
330	if (c->defsv) REPLACE_SV (DEFSV , c->defsv);	319	if (c->defsv) REPLACE_SV (DEFSV , c->defsv);
331	if (c->errsv) REPLACE_SV (ERRSV , c->errsv);	320	if (c->errsv) REPLACE_SV (ERRSV , c->errsv);
		321	if (c->irssv)
		322	{
		323	if (c->irssv == PL_rs \|\| sv_eq (PL_rs, c->irssv))
		324	SvREFCNT_dec (c->irssv);
		325	else
		326	{
		327	REPLACE_SV (PL_rs, c->irssv);
		328	if (!c->irssv_sv) c->irssv_sv = get_sv ("/", 0);
		329	sv_setsv (c->irssv_sv, PL_rs);
		330	}
		331	}
332		332
333	{	333	{
334	dSP;	334	dSP;
335	CV *cv;	335	CV *cv;
336		336
337	/* now do the ugly restore mess */	337	/* now do the ugly restore mess */
338	while ((cv = (CV *)POPs))	338	while ((cv = (CV *)POPs))
339	{	339	{
340	AV padlist = (AV )POPs;
341
342	if (padlist)
343	{
344	put_padlist (cv); /* mark this padlist as available */	340	put_padlist (cv); /* mark this padlist as available */
345	CvPADLIST(cv) = padlist;	341	CvDEPTH (cv) = PTR2IV (POPs);
346	}	342	CvPADLIST (cv) = (AV *)POPs;
347
348	++CvDEPTH(cv);
349	}	343	}
350		344
351	PUTBACK;	345	PUTBACK;
352	}	346	}
353	}	347	}
354		348
355	static void	349	static void
356	save_state(Coro__State c, int flags)	350	save_perl (Coro__State c)
357	{	351	{
358	{	352	{
359	dSP;	353	dSP;
360	I32 cxix = cxstack_ix;	354	I32 cxix = cxstack_ix;
361	PERL_CONTEXT *ccstk = cxstack;	355	PERL_CONTEXT *ccstk = cxstack;
…		…
364	/*	358	/*
365	* the worst thing you can imagine happens first - we have to save	359	* the worst thing you can imagine happens first - we have to save
366	* (and reinitialize) all cv's in the whole callchain :(	360	* (and reinitialize) all cv's in the whole callchain :(
367	*/	361	*/
368		362
		363	EXTEND (SP, 3 + 1);
369	PUSHs (Nullsv);	364	PUSHs (Nullsv);
370	/* this loop was inspired by pp_caller */	365	/* this loop was inspired by pp_caller */
371	for (;;)	366	for (;;)
372	{	367	{
373	while (cxix >= 0)	368	while (cxix >= 0)
374	{	369	{
375	PERL_CONTEXT *cx = &ccstk[cxix--];	370	PERL_CONTEXT *cx = &ccstk[cxix--];
376		371
377	if (CxTYPE(cx) == CXt_SUB)	372	if (CxTYPE (cx) == CXt_SUB)
378	{	373	{
379	CV *cv = cx->blk_sub.cv;	374	CV *cv = cx->blk_sub.cv;
		375
380	if (CvDEPTH(cv))	376	if (CvDEPTH (cv))
381	{	377	{
382	EXTEND (SP, CvDEPTH(cv)*2);	378	EXTEND (SP, 3);
383
384	while (--CvDEPTH(cv))
385	{
386	/* this tells the restore code to increment CvDEPTH */
387	PUSHs (Nullsv);
388	PUSHs ((SV *)cv);
389	}
390
391	PUSHs ((SV *)CvPADLIST(cv));	379	PUSHs ((SV *)CvPADLIST (cv));
		380	PUSHs (INT2PTR (SV *, CvDEPTH (cv)));
392	PUSHs ((SV *)cv);	381	PUSHs ((SV *)cv);
393		382
		383	CvDEPTH (cv) = 0;
394	get_padlist (cv);	384	get_padlist (cv);
395	}	385	}
396	}	386	}
397	#ifdef CXt_FORMAT
398	else if (CxTYPE(cx) == CXt_FORMAT)
399	{
400	/* I never used formats, so how should I know how these are implemented? */
401	/* my bold guess is as a simple, plain sub... */
402	croak ("CXt_FORMAT not yet handled. Don't switch coroutines from within formats");
403	}
404	#endif
405	}	387	}
406		388
407	if (top_si->si_type == PERLSI_MAIN)	389	if (top_si->si_type == PERLSI_MAIN)
408	break;	390	break;
409		391
…		…
413	}	395	}
414		396
415	PUTBACK;	397	PUTBACK;
416	}	398	}
417		399
418	c->defav = flags & TRANSFER_SAVE_DEFAV ? (AV *)SvREFCNT_inc (GvAV (PL_defgv)) : 0;	400	c->defav = c->save & CORO_SAVE_DEFAV ? (AV *)SvREFCNT_inc (GvAV (PL_defgv)) : 0;
419	c->defsv = flags & TRANSFER_SAVE_DEFSV ? SvREFCNT_inc (DEFSV) : 0;	401	c->defsv = c->save & CORO_SAVE_DEFSV ? SvREFCNT_inc (DEFSV) : 0;
420	c->errsv = flags & TRANSFER_SAVE_ERRSV ? SvREFCNT_inc (ERRSV) : 0;	402	c->errsv = c->save & CORO_SAVE_ERRSV ? SvREFCNT_inc (ERRSV) : 0;
		403	c->irssv = c->save & CORO_SAVE_IRSSV ? SvREFCNT_inc (PL_rs) : 0;
421		404
422	c->dowarn = PL_dowarn;	405	#define VAR(name,type)c->name = PL_ ## name;
423	c->in_eval = PL_in_eval;	406	# include "state.h"
424		407	#undef VAR
425	c->curstackinfo = PL_curstackinfo;
426	c->curstack = PL_curstack;
427	c->mainstack = PL_mainstack;
428	c->stack_sp = PL_stack_sp;
429	c->op = PL_op;
430	c->curpad = PL_curpad;
431	c->comppad = PL_comppad;
432	c->compcv = PL_compcv;
433	c->stack_base = PL_stack_base;
434	c->stack_max = PL_stack_max;
435	c->tmps_stack = PL_tmps_stack;
436	c->tmps_floor = PL_tmps_floor;
437	c->tmps_ix = PL_tmps_ix;
438	c->tmps_max = PL_tmps_max;
439	c->markstack = PL_markstack;
440	c->markstack_ptr = PL_markstack_ptr;
441	c->markstack_max = PL_markstack_max;
442	c->scopestack = PL_scopestack;
443	c->scopestack_ix = PL_scopestack_ix;
444	c->scopestack_max = PL_scopestack_max;
445	c->savestack = PL_savestack;
446	c->savestack_ix = PL_savestack_ix;
447	c->savestack_max = PL_savestack_max;
448	#if !PERL_VERSION_ATLEAST (5,9,0)
449	c->retstack = PL_retstack;
450	c->retstack_ix = PL_retstack_ix;
451	c->retstack_max = PL_retstack_max;
452	#endif
453	c->curpm = PL_curpm;
454	c->curcop = PL_curcop;
455	}	408	}
456		409
457	/*	410	/*
458	* allocate various perl stacks. This is an exact copy	411	* allocate various perl stacks. This is an exact copy
459	* of perl.c:init_stacks, except that it uses less memory	412	* of perl.c:init_stacks, except that it uses less memory
460	* on the (sometimes correct) assumption that coroutines do	413	* on the (sometimes correct) assumption that coroutines do
461	* not usually need a lot of stackspace.	414	* not usually need a lot of stackspace.
462	*/	415	*/
		416	#if PREFER_PERL_FUNCTIONS
		417	# define coro_init_stacks init_stacks
		418	#else
463	static void	419	static void
464	coro_init_stacks ()	420	coro_init_stacks ()
465	{	421	{
466	PL_curstackinfo = new_stackinfo(96, 1024/sizeof(PERL_CONTEXT) - 1);	422	PL_curstackinfo = new_stackinfo(128, 1024/sizeof(PERL_CONTEXT));
467	PL_curstackinfo->si_type = PERLSI_MAIN;	423	PL_curstackinfo->si_type = PERLSI_MAIN;
468	PL_curstack = PL_curstackinfo->si_stack;	424	PL_curstack = PL_curstackinfo->si_stack;
469	PL_mainstack = PL_curstack; /* remember in case we switch stacks */	425	PL_mainstack = PL_curstack; /* remember in case we switch stacks */
470		426
471	PL_stack_base = AvARRAY(PL_curstack);	427	PL_stack_base = AvARRAY(PL_curstack);
472	PL_stack_sp = PL_stack_base;	428	PL_stack_sp = PL_stack_base;
473	PL_stack_max = PL_stack_base + AvMAX(PL_curstack);	429	PL_stack_max = PL_stack_base + AvMAX(PL_curstack);
474		430
475	New(50,PL_tmps_stack,96,SV*);	431	New(50,PL_tmps_stack,128,SV*);
476	PL_tmps_floor = -1;	432	PL_tmps_floor = -1;
477	PL_tmps_ix = -1;	433	PL_tmps_ix = -1;
478	PL_tmps_max = 96;	434	PL_tmps_max = 128;
479		435
480	New(54,PL_markstack,16,I32);	436	New(54,PL_markstack,32,I32);
481	PL_markstack_ptr = PL_markstack;	437	PL_markstack_ptr = PL_markstack;
482	PL_markstack_max = PL_markstack + 16;	438	PL_markstack_max = PL_markstack + 32;
483		439
484	#ifdef SET_MARK_OFFSET	440	#ifdef SET_MARK_OFFSET
485	SET_MARK_OFFSET;	441	SET_MARK_OFFSET;
486	#endif	442	#endif
487		443
488	New(54,PL_scopestack,16,I32);	444	New(54,PL_scopestack,32,I32);
489	PL_scopestack_ix = 0;	445	PL_scopestack_ix = 0;
490	PL_scopestack_max = 16;	446	PL_scopestack_max = 32;
491		447
492	New(54,PL_savestack,96,ANY);	448	New(54,PL_savestack,64,ANY);
493	PL_savestack_ix = 0;	449	PL_savestack_ix = 0;
494	PL_savestack_max = 96;	450	PL_savestack_max = 64;
495		451
496	#if !PERL_VERSION_ATLEAST (5,9,0)	452	#if !PERL_VERSION_ATLEAST (5,9,0)
497	New(54,PL_retstack,8,OP*);	453	New(54,PL_retstack,16,OP*);
498	PL_retstack_ix = 0;	454	PL_retstack_ix = 0;
499	PL_retstack_max = 8;	455	PL_retstack_max = 16;
500	#endif	456	#endif
501	}	457	}
		458	#endif
502		459
503	/*	460	/*
504	* destroy the stacks, the callchain etc...	461	* destroy the stacks, the callchain etc...
505	*/	462	*/
506	static void	463	static void
507	coro_destroy_stacks ()	464	coro_destroy_stacks ()
508	{	465	{
509	if (!IN_DESTRUCT)	466	if (!IN_DESTRUCT)
510	{	467	{
511	/* is this ugly, I ask? */	468	/* restore all saved variables and stuff */
512	LEAVE_SCOPE (0);	469	LEAVE_SCOPE (0);
		470	assert (PL_tmps_floor == -1);
513		471
514	/* sure it is, but more important: is it correct?? :/ */	472	/* free all temporaries */
515	FREETMPS;	473	FREETMPS;
		474	assert (PL_tmps_ix == -1);
516		475
517	/POPSTACK_TO (PL_mainstack);//D//use/	476	POPSTACK_TO (PL_mainstack);
518	}	477	}
519		478
520	while (PL_curstackinfo->si_next)	479	while (PL_curstackinfo->si_next)
521	PL_curstackinfo = PL_curstackinfo->si_next;	480	PL_curstackinfo = PL_curstackinfo->si_next;
522		481
523	while (PL_curstackinfo)	482	while (PL_curstackinfo)
524	{	483	{
525	PERL_SI *p = PL_curstackinfo->si_prev;	484	PERL_SI *p = PL_curstackinfo->si_prev;
526		485
527	{ /D//remove/
528	dSP;
529	SWITCHSTACK (PL_curstack, PL_curstackinfo->si_stack);
530	PUTBACK; /* possibly superfluous */
531	}
532
533	if (!IN_DESTRUCT)	486	if (!IN_DESTRUCT)
534	{
535	dounwind (-1);/D//remove/
536	SvREFCNT_dec (PL_curstackinfo->si_stack);	487	SvREFCNT_dec (PL_curstackinfo->si_stack);
537	}
538		488
539	Safefree (PL_curstackinfo->si_cxstack);	489	Safefree (PL_curstackinfo->si_cxstack);
540	Safefree (PL_curstackinfo);	490	Safefree (PL_curstackinfo);
541	PL_curstackinfo = p;	491	PL_curstackinfo = p;
542	}	492	}
…		…
557	* emulate part of the perl startup here.	507	* emulate part of the perl startup here.
558	*/	508	*/
559		509
560	coro_init_stacks ();	510	coro_init_stacks ();
561		511
562	PL_curcop = 0;	512	PL_curcop = &PL_compiling;
563	PL_in_eval = 0;	513	PL_in_eval = EVAL_NULL;
564	PL_curpm = 0;	514	PL_curpm = 0;
		515	PL_localizing = 0;
		516	PL_dirty = 0;
		517	PL_restartop = 0;
565		518
566	{	519	{
567	dSP;	520	dSP;
568	LOGOP myop;	521	LOGOP myop;
569		522
570	/* I have no idea why this is needed, but it is */
571	PUSHMARK (SP);
572
573	SvREFCNT_dec (GvAV (PL_defgv));	523	SvREFCNT_dec (GvAV (PL_defgv));
574	GvAV (PL_defgv) = coro->args; coro->args = 0;	524	GvAV (PL_defgv) = coro->args; coro->args = 0;
575		525
576	Zero (&myop, 1, LOGOP);	526	Zero (&myop, 1, LOGOP);
577	myop.op_next = Nullop;	527	myop.op_next = Nullop;
578	myop.op_flags = OPf_WANT_VOID;	528	myop.op_flags = OPf_WANT_VOID;
579		529
		530	PUSHMARK (SP);
		531	XPUSHs ((SV *)get_cv ("Coro::State::_coro_init", FALSE));
		532	PUTBACK;
580	PL_op = (OP *)&myop;	533	PL_op = (OP *)&myop;
581
582	PUSHMARK (SP);
583	XPUSHs ((SV *)get_cv ("Coro::State::coro_init", FALSE));
584	PUTBACK;
585	PL_op = PL_ppaddr[OP_ENTERSUB](aTHX);	534	PL_op = PL_ppaddr[OP_ENTERSUB](aTHX);
586	SPAGAIN;	535	SPAGAIN;
587
588	ENTER; /* necessary e.g. for dounwind */
589	}	536	}
		537
		538	ENTER; /* necessary e.g. for dounwind */
590	}	539	}
591		540
592	static void	541	static void
593	free_coro_mortal ()	542	free_coro_mortal ()
594	{	543	{
…		…
597	SvREFCNT_dec (coro_mortal);	546	SvREFCNT_dec (coro_mortal);
598	coro_mortal = 0;	547	coro_mortal = 0;
599	}	548	}
600	}	549	}
601		550
		551	/* inject a fake call to Coro::State::_cctx_init into the execution */
602	static void NOINLINE	552	static void NOINLINE
603	prepare_cctx (coro_cctx *cctx)	553	prepare_cctx (coro_cctx *cctx)
604	{	554	{
605	dSP;	555	dSP;
606	LOGOP myop;	556	LOGOP myop;
607		557
608	Zero (&myop, 1, LOGOP);	558	Zero (&myop, 1, LOGOP);
609	myop.op_next = PL_op;	559	myop.op_next = PL_op;
610	myop.op_flags = OPf_WANT_VOID;	560	myop.op_flags = OPf_WANT_VOID \| OPf_STACKED;
611
612	sv_setiv (get_sv ("Coro::State::cctx", FALSE), PTR2IV (cctx));
613		561
614	PUSHMARK (SP);	562	PUSHMARK (SP);
		563	EXTEND (SP, 2);
		564	PUSHs (sv_2mortal (newSViv (PTR2IV (cctx))));
615	XPUSHs ((SV *)get_cv ("Coro::State::cctx_init", FALSE));	565	PUSHs ((SV *)get_cv ("Coro::State::_cctx_init", FALSE));
616	PUTBACK;	566	PUTBACK;
		567	PL_op = (OP *)&myop;
617	PL_restartop = PL_ppaddr[OP_ENTERSUB](aTHX);	568	PL_op = PL_ppaddr[OP_ENTERSUB](aTHX);
618	SPAGAIN;	569	SPAGAIN;
619	}	570	}
620		571
621	static void	572	static void
622	coro_run (void *arg)	573	coro_run (void *arg)
623	{	574	{
624	/* coro_run is the alternative epilogue of transfer() */	575	/* coro_run is the alternative tail of transfer(), so unlock here. */
625	UNLOCK;	576	UNLOCK;
626		577
627	/*	578	/*
628	* this is a _very_ stripped down perl interpreter ;)	579	* this is a _very_ stripped down perl interpreter ;)
629	*/	580	*/
630	PL_top_env = &PL_start_env;	581	PL_top_env = &PL_start_env;
		582
631	/* inject call to cctx_init */	583	/* inject call to cctx_init */
632	prepare_cctx ((coro_cctx *)arg);	584	prepare_cctx ((coro_cctx *)arg);
633		585
634	/* somebody will hit me for both perl_run and PL_restartop */	586	/* somebody will hit me for both perl_run and PL_restartop */
		587	PL_restartop = PL_op;
635	perl_run (PL_curinterp);	588	perl_run (PL_curinterp);
636		589
637	fputs ("FATAL: C coroutine fell over the edge of the world, aborting. Did you call exit in a coroutine?\n", stderr);	590	fputs ("FATAL: C coroutine fell over the edge of the world, aborting. Did you call exit in a coroutine?\n", stderr);
638	abort ();	591	abort ();
639	}	592	}
…		…
641	static coro_cctx *	594	static coro_cctx *
642	cctx_new ()	595	cctx_new ()
643	{	596	{
644	coro_cctx *cctx;	597	coro_cctx *cctx;
645		598
		599	++cctx_count;
		600
646	New (0, cctx, 1, coro_cctx);	601	Newz (0, cctx, 1, coro_cctx);
647		602
648	#if HAVE_MMAP	603	#if HAVE_MMAP
649		604
650	cctx->ssize = ((STACKSIZE * sizeof (long) + PAGESIZE - 1) / PAGESIZE + STACKGUARD) * PAGESIZE;	605	cctx->ssize = ((STACKSIZE * sizeof (long) + PAGESIZE - 1) / PAGESIZE + STACKGUARD) * PAGESIZE;
651	/* mmap suppsedly does allocate-on-write for us */	606	/* mmap supposedly does allocate-on-write for us */
652	cctx->sptr = mmap (0, cctx->ssize, PROT_EXEC\|PROT_READ\|PROT_WRITE, MAP_PRIVATE\|MAP_ANONYMOUS, 0, 0);	607	cctx->sptr = mmap (0, cctx->ssize, PROT_EXEC\|PROT_READ\|PROT_WRITE, MAP_PRIVATE\|MAP_ANONYMOUS, 0, 0);
653		608
654	if (cctx->sptr == (void *)-1)	609	if (cctx->sptr == (void *)-1)
655	{	610	{
656	perror ("FATAL: unable to mmap stack for coroutine");	611	perror ("FATAL: unable to mmap stack for coroutine");
…		…
685		640
686	return cctx;	641	return cctx;
687	}	642	}
688		643
689	static void	644	static void
690	cctx_free (coro_cctx *cctx)	645	cctx_destroy (coro_cctx *cctx)
691	{	646	{
692	if (!cctx)	647	if (!cctx)
693	return;	648	return;
		649
		650	--cctx_count;
694		651
695	#if USE_VALGRIND	652	#if USE_VALGRIND
696	VALGRIND_STACK_DEREGISTER (cctx->valgrind_id);	653	VALGRIND_STACK_DEREGISTER (cctx->valgrind_id);
697	#endif	654	#endif
698		655
…		…
703	#endif	660	#endif
704		661
705	Safefree (cctx);	662	Safefree (cctx);
706	}	663	}
707		664
708	static coro_cctx *cctx_first;
709	static int cctx_count, cctx_idle;
710
711	static coro_cctx *	665	static coro_cctx *
712	cctx_get ()	666	cctx_get ()
713	{	667	{
714	coro_cctx *cctx;	668	coro_cctx *cctx;
715		669
716	if (cctx_first)	670	if (cctx_first)
717	{	671	{
718	--cctx_idle;
719	cctx = cctx_first;	672	cctx = cctx_first;
720	cctx_first = cctx->next;	673	cctx_first = cctx->next;
		674	--cctx_idle;
721	}	675	}
722	else	676	else
723	{	677	{
724	++cctx_count;
725	cctx = cctx_new ();	678	cctx = cctx_new ();
726	PL_op = PL_op->op_next;	679	PL_op = PL_op->op_next;
727	}	680	}
728		681
729	return cctx;	682	return cctx;
730	}	683	}
731		684
732	static void	685	static void
733	cctx_put (coro_cctx *cctx)	686	cctx_put (coro_cctx *cctx)
734	{	687	{
		688	/* free another cctx if overlimit */
		689	if (cctx_idle >= MAX_IDLE_CCTX)
		690	{
		691	coro_cctx *first = cctx_first;
		692	cctx_first = first->next;
		693	--cctx_idle;
		694
		695	assert (!first->inuse);
		696	cctx_destroy (first);
		697	}
		698
735	++cctx_idle;	699	++cctx_idle;
736	cctx->next = cctx_first;	700	cctx->next = cctx_first;
737	cctx_first = cctx;	701	cctx_first = cctx;
738	}	702	}
739		703
740	/* never call directly, always through the coro_state_transfer global variable */	704	/* never call directly, always through the coro_state_transfer global variable */
741	static void NOINLINE	705	static void NOINLINE
742	transfer (struct coro prev, struct coro next, int flags)	706	transfer (struct coro prev, struct coro next)
743	{	707	{
744	dSTACKLEVEL;	708	dSTACKLEVEL;
745		709
746	/* sometimes transfer is only called to set idle_sp */	710	/* sometimes transfer is only called to set idle_sp */
747	if (flags == TRANSFER_SET_STACKLEVEL)	711	if (!next)
		712	{
748	((coro_cctx *)prev)->idle_sp = STACKLEVEL;	713	((coro_cctx *)prev)->idle_sp = STACKLEVEL;
		714	assert (((coro_cctx )prev)->idle_te = PL_top_env); / just for the side-effect when asserts are enabled */
		715	}
749	else if (prev != next)	716	else if (prev != next)
750	{	717	{
751	coro_cctx *prev__cctx;	718	coro_cctx *prev__cctx;
752		719
		720	if (prev->flags & CF_NEW)
		721	{
		722	/* create a new empty context */
		723	Newz (0, prev->cctx, 1, coro_cctx);
		724	prev->cctx->inuse = 1;
		725	prev->flags &= ~CF_NEW;
		726	prev->flags \|= CF_RUNNING;
		727	}
		728
		729	/TODO: must not croak here /
		730	if (!prev->flags & CF_RUNNING)
		731	croak ("Coro::State::transfer called with non-running prev Coro::State, but can only transfer from running states");
		732
		733	if (next->flags & CF_RUNNING)
		734	croak ("Coro::State::transfer called with running next Coro::State, but can only transfer to inactive states");
		735
		736	prev->flags &= ~CF_RUNNING;
		737	next->flags \|= CF_RUNNING;
		738
753	LOCK;	739	LOCK;
754		740
755	if (next->mainstack)	741	if (next->flags & CF_NEW)
756	{	742	{
757	/* coroutine already started */	743	/* need to start coroutine */
758	SAVE (prev, flags);	744	next->flags &= ~CF_NEW;
759	LOAD (next);	745	/* first get rid of the old state */
		746	save_perl (prev);
		747	/* setup coroutine call */
		748	setup_coro (next);
		749	/* need a new stack */
		750	assert (!next->cctx);
760	}	751	}
761	else	752	else
762	{	753	{
763	/* need to start coroutine */	754	/* coroutine already started */
764	/* first get rid of the old state */	755	save_perl (prev);
765	SAVE (prev, -1);	756	load_perl (next);
766	/* setup coroutine call */
767	setup_coro (next);
768	/* need a stack */
769	next->cctx = 0;
770	}	757	}
771
772	if (!prev->cctx)
773	/* create a new empty context */
774	Newz (0, prev->cctx, 1, coro_cctx);
775		758
776	prev__cctx = prev->cctx;	759	prev__cctx = prev->cctx;
777		760
778	/* possibly "free" the cctx */	761	/* possibly "free" the cctx */
779	if (prev__cctx->idle_sp == STACKLEVEL)	762	if (prev__cctx->idle_sp == STACKLEVEL)
780	{	763	{
		764	/* I assume that STACKLEVEL is a stronger indicator than PL_top_env changes */
		765	assert (("ERROR: current top_env must equal previous top_env", PL_top_env == prev__cctx->idle_te));
		766
		767	prev->cctx = 0;
		768
781	cctx_put (prev__cctx);	769	cctx_put (prev__cctx);
782	prev->cctx = 0;	770	prev__cctx->inuse = 0;
783	}	771	}
784		772
785	if (!next->cctx)	773	if (!next->cctx)
		774	{
786	next->cctx = cctx_get ();	775	next->cctx = cctx_get ();
		776	assert (!next->cctx->inuse);
		777	next->cctx->inuse = 1;
		778	}
787		779
788	if (prev__cctx != next->cctx)	780	if (prev__cctx != next->cctx)
789	{	781	{
790	prev__cctx->top_env = PL_top_env;	782	prev__cctx->top_env = PL_top_env;
791	PL_top_env = next->cctx->top_env;	783	PL_top_env = next->cctx->top_env;
…		…
799	}	791	}
800		792
801	struct transfer_args	793	struct transfer_args
802	{	794	{
803	struct coro prev, next;	795	struct coro prev, next;
804	int flags;
805	};	796	};
806		797
807	#define TRANSFER(ta) transfer ((ta).prev, (ta).next, (ta).flags)	798	#define TRANSFER(ta) transfer ((ta).prev, (ta).next)
808		799
809	static void	800	static void
810	coro_state_destroy (struct coro *coro)	801	coro_state_destroy (struct coro *coro)
811	{	802	{
812	if (coro->refcnt--)	803	if (coro->refcnt--)
813	return;	804	return;
814		805
815	if (coro->mainstack && coro->mainstack != main_mainstack)	806	if (coro->mainstack && coro->mainstack != main_mainstack)
816	{	807	{
817	struct coro temp;	808	struct coro temp;
		809	Zero (&temp, 1, struct coro);
		810	temp.save = CORO_SAVE_ALL;
818		811
819	SAVE ((&temp), TRANSFER_SAVE_ALL);	812	if (coro->flags & CF_RUNNING)
820	LOAD (coro);	813	croak ("FATAL: tried to destroy currently running coroutine");
		814
		815	save_perl (&temp);
		816	load_perl (coro);
821		817
822	coro_destroy_stacks ();	818	coro_destroy_stacks ();
823		819
824	LOAD ((&temp)); /* this will get rid of defsv etc.. */	820	load_perl (&temp); /* this will get rid of defsv etc.. */
825		821
826	coro->mainstack = 0;	822	coro->mainstack = 0;
827	}	823	}
828		824
829	cctx_free (coro->cctx);	825	cctx_destroy (coro->cctx);
830	SvREFCNT_dec (coro->args);	826	SvREFCNT_dec (coro->args);
831	Safefree (coro);	827	Safefree (coro);
832	}	828	}
833		829
834	static int	830	static int
…		…
884	assert (mg->mg_type == PERL_MAGIC_ext);	880	assert (mg->mg_type == PERL_MAGIC_ext);
885	return (struct coro *)mg->mg_ptr;	881	return (struct coro *)mg->mg_ptr;
886	}	882	}
887		883
888	static void	884	static void
889	prepare_transfer (struct transfer_args ta, SV prev, SV *next, int flags)	885	prepare_transfer (struct transfer_args ta, SV prev_sv, SV *next_sv)
890	{	886	{
891	ta->prev = SvSTATE (prev);	887	ta->prev = SvSTATE (prev_sv);
892	ta->next = SvSTATE (next);	888	ta->next = SvSTATE (next_sv);
893	ta->flags = flags;
894	}	889	}
895		890
896	static void	891	static void
897	api_transfer (SV prev, SV next, int flags)	892	api_transfer (SV prev_sv, SV next_sv)
898	{	893	{
899	dTHX;
900	struct transfer_args ta;	894	struct transfer_args ta;
901		895
902	prepare_transfer (&ta, prev, next, flags);	896	prepare_transfer (&ta, prev_sv, next_sv);
903	TRANSFER (ta);	897	TRANSFER (ta);
		898	}
		899
		900	static int
		901	api_save (SV *coro_sv, int new_save)
		902	{
		903	struct coro *coro = SvSTATE (coro_sv);
		904	int old_save = coro->save;
		905
		906	if (new_save >= 0)
		907	coro->save = new_save;
		908
		909	return old_save;
904	}	910	}
905		911
906	/ Coro ******************************************************************/	912	/ Coro ******************************************************************/
907		913
908	#define PRIO_MAX 3	914	#define PRIO_MAX 3
…		…
911	#define PRIO_LOW -1	917	#define PRIO_LOW -1
912	#define PRIO_IDLE -3	918	#define PRIO_IDLE -3
913	#define PRIO_MIN -4	919	#define PRIO_MIN -4
914		920
915	/* for Coro.pm */	921	/* for Coro.pm */
916	static GV coro_current, coro_idle;	922	static SV *coro_current;
917	static AV *coro_ready [PRIO_MAX-PRIO_MIN+1];	923	static AV *coro_ready [PRIO_MAX-PRIO_MIN+1];
918	static int coro_nready;	924	static int coro_nready;
919		925
920	static void	926	static void
921	coro_enq (SV *sv)	927	coro_enq (SV *coro_sv)
922	{	928	{
923	int prio;
924
925	if (SvTYPE (sv) != SVt_PVHV)
926	croak ("Coro::ready tried to enqueue something that is not a coroutine");
927
928	prio = SvSTATE (sv)->prio;
929
930	av_push (coro_ready [prio - PRIO_MIN], sv);	929	av_push (coro_ready [SvSTATE (coro_sv)->prio - PRIO_MIN], coro_sv);
931	coro_nready++;	930	coro_nready++;
932	}	931	}
933		932
934	static SV *	933	static SV *
935	coro_deq (int min_prio)	934	coro_deq (int min_prio)
…		…
948	}	947	}
949		948
950	return 0;	949	return 0;
951	}	950	}
952		951
953	static void	952	static int
954	api_ready (SV *coro)	953	api_ready (SV *coro_sv)
955	{	954	{
956	dTHX;	955	struct coro *coro;
957		956
958	if (SvROK (coro))	957	if (SvROK (coro_sv))
959	coro = SvRV (coro);	958	coro_sv = SvRV (coro_sv);
		959
		960	coro = SvSTATE (coro_sv);
		961
		962	if (coro->flags & CF_READY)
		963	return 0;
		964
		965	coro->flags \|= CF_READY;
960		966
961	LOCK;	967	LOCK;
962	coro_enq (SvREFCNT_inc (coro));	968	coro_enq (SvREFCNT_inc (coro_sv));
963	UNLOCK;	969	UNLOCK;
		970
		971	return 1;
		972	}
		973
		974	static int
		975	api_is_ready (SV *coro_sv)
		976	{
		977	return !!(SvSTATE (coro_sv)->flags & CF_READY);
964	}	978	}
965		979
966	static void	980	static void
967	prepare_schedule (struct transfer_args *ta)	981	prepare_schedule (struct transfer_args *ta)
968	{	982	{
969	SV current, prev, *next;	983	SV prev, next;
970
971	current = GvSV (coro_current);
972		984
973	for (;;)	985	for (;;)
974	{	986	{
975	LOCK;	987	LOCK;
976	next = coro_deq (PRIO_MIN);	988	next = coro_deq (PRIO_MIN);
…		…
985	ENTER;	997	ENTER;
986	SAVETMPS;	998	SAVETMPS;
987		999
988	PUSHMARK (SP);	1000	PUSHMARK (SP);
989	PUTBACK;	1001	PUTBACK;
990	call_sv (GvSV (coro_idle), G_DISCARD);	1002	call_sv (get_sv ("Coro::idle", FALSE), G_DISCARD);
991		1003
992	FREETMPS;	1004	FREETMPS;
993	LEAVE;	1005	LEAVE;
994	}	1006	}
995	}	1007	}
996		1008
997	prev = SvRV (current);	1009	prev = SvRV (coro_current);
998	SvRV (current) = next;	1010	SvRV_set (coro_current, next);
999		1011
1000	/* free this only after the transfer */	1012	/* free this only after the transfer */
1001	LOCK;	1013	LOCK;
1002	free_coro_mortal ();	1014	free_coro_mortal ();
1003	UNLOCK;	1015	UNLOCK;
1004	coro_mortal = prev;	1016	coro_mortal = prev;
1005		1017
		1018	assert (!SvROK(prev));//D
		1019	assert (!SvROK(next));//D
		1020
1006	ta->prev = SvSTATE (prev);	1021	ta->prev = SvSTATE (prev);
1007	ta->next = SvSTATE (next);	1022	ta->next = SvSTATE (next);
1008	ta->flags = TRANSFER_SAVE_ALL;	1023
		1024	assert (ta->next->flags & CF_READY);
		1025	ta->next->flags &= ~CF_READY;
1009	}	1026	}
1010		1027
1011	static void	1028	static void
1012	prepare_cede (struct transfer_args *ta)	1029	prepare_cede (struct transfer_args *ta)
1013	{	1030	{
1014	LOCK;	1031	api_ready (coro_current);
1015	coro_enq (SvREFCNT_inc (SvRV (GvSV (coro_current))));
1016	UNLOCK;
1017
1018	prepare_schedule (ta);	1032	prepare_schedule (ta);
1019	}	1033	}
1020		1034
		1035	static int
		1036	prepare_cede_notself (struct transfer_args *ta)
		1037	{
		1038	if (coro_nready)
		1039	{
		1040	SV *prev = SvRV (coro_current);
		1041	prepare_schedule (ta);
		1042	api_ready (prev);
		1043	return 1;
		1044	}
		1045	else
		1046	return 0;
		1047	}
		1048
1021	static void	1049	static void
1022	api_schedule (void)	1050	api_schedule (void)
1023	{	1051	{
1024	dTHX;
1025	struct transfer_args ta;	1052	struct transfer_args ta;
1026		1053
1027	prepare_schedule (&ta);	1054	prepare_schedule (&ta);
1028	TRANSFER (ta);	1055	TRANSFER (ta);
1029	}	1056	}
1030		1057
1031	static void	1058	static int
1032	api_cede (void)	1059	api_cede (void)
1033	{	1060	{
1034	dTHX;
1035	struct transfer_args ta;	1061	struct transfer_args ta;
1036		1062
1037	prepare_cede (&ta);	1063	prepare_cede (&ta);
		1064
		1065	if (ta.prev != ta.next)
		1066	{
1038	TRANSFER (ta);	1067	TRANSFER (ta);
		1068	return 1;
		1069	}
		1070	else
		1071	return 0;
		1072	}
		1073
		1074	static int
		1075	api_cede_notself (void)
		1076	{
		1077	struct transfer_args ta;
		1078
		1079	if (prepare_cede_notself (&ta))
		1080	{
		1081	TRANSFER (ta);
		1082	return 1;
		1083	}
		1084	else
		1085	return 0;
1039	}	1086	}
1040		1087
1041	MODULE = Coro::State PACKAGE = Coro::State	1088	MODULE = Coro::State PACKAGE = Coro::State
1042		1089
1043	PROTOTYPES: DISABLE	1090	PROTOTYPES: DISABLE
…		…
1049	#endif	1096	#endif
1050	BOOT_PAGESIZE;	1097	BOOT_PAGESIZE;
1051		1098
1052	coro_state_stash = gv_stashpv ("Coro::State", TRUE);	1099	coro_state_stash = gv_stashpv ("Coro::State", TRUE);
1053		1100
1054	newCONSTSUB (coro_state_stash, "SAVE_DEFAV", newSViv (TRANSFER_SAVE_DEFAV));	1101	newCONSTSUB (coro_state_stash, "SAVE_DEFAV", newSViv (CORO_SAVE_DEFAV));
1055	newCONSTSUB (coro_state_stash, "SAVE_DEFSV", newSViv (TRANSFER_SAVE_DEFSV));	1102	newCONSTSUB (coro_state_stash, "SAVE_DEFSV", newSViv (CORO_SAVE_DEFSV));
1056	newCONSTSUB (coro_state_stash, "SAVE_ERRSV", newSViv (TRANSFER_SAVE_ERRSV));	1103	newCONSTSUB (coro_state_stash, "SAVE_ERRSV", newSViv (CORO_SAVE_ERRSV));
		1104	newCONSTSUB (coro_state_stash, "SAVE_IRSSV", newSViv (CORO_SAVE_IRSSV));
		1105	newCONSTSUB (coro_state_stash, "SAVE_ALL", newSViv (CORO_SAVE_ALL));
1057		1106
1058	main_mainstack = PL_mainstack;	1107	main_mainstack = PL_mainstack;
1059		1108
1060	coroapi.ver = CORO_API_VERSION;	1109	coroapi.ver = CORO_API_VERSION;
1061	coroapi.transfer = api_transfer;	1110	coroapi.transfer = api_transfer;
…		…
1071	HV *hv;	1120	HV *hv;
1072	int i;	1121	int i;
1073		1122
1074	Newz (0, coro, 1, struct coro);	1123	Newz (0, coro, 1, struct coro);
1075	coro->args = newAV ();	1124	coro->args = newAV ();
		1125	coro->save = CORO_SAVE_ALL;
		1126	coro->flags = CF_NEW;
1076		1127
1077	hv = newHV ();	1128	hv = newHV ();
1078	sv_magicext ((SV )hv, 0, PERL_MAGIC_ext, &coro_state_vtbl, (char )coro, 0)->mg_flags \|= MGf_DUP;	1129	sv_magicext ((SV )hv, 0, PERL_MAGIC_ext, &coro_state_vtbl, (char )coro, 0)->mg_flags \|= MGf_DUP;
1079	RETVAL = sv_bless (newRV_noinc ((SV *)hv), gv_stashpv (klass, 1));	1130	RETVAL = sv_bless (newRV_noinc ((SV *)hv), gv_stashpv (klass, 1));
1080		1131
1081	for (i = 1; i < items; i++)	1132	for (i = 1; i < items; i++)
1082	av_push (coro->args, newSVsv (ST (i)));	1133	av_push (coro->args, newSVsv (ST (i)));
1083	}	1134	}
1084	OUTPUT:	1135	OUTPUT:
		1136	RETVAL
		1137
		1138	int
		1139	save (SV *coro, int new_save = -1)
		1140	CODE:
		1141	RETVAL = api_save (coro, new_save);
		1142	OUTPUT:
1085	RETVAL	1143	RETVAL
1086		1144
1087	void	1145	void
1088	_set_stacklevel (...)	1146	_set_stacklevel (...)
1089	ALIAS:	1147	ALIAS:
1090	Coro::State::transfer = 1	1148	Coro::State::transfer = 1
1091	Coro::schedule = 2	1149	Coro::schedule = 2
1092	Coro::cede = 3	1150	Coro::cede = 3
1093	Coro::Cont::yield = 4	1151	Coro::cede_notself = 4
1094	CODE:	1152	CODE:
1095	{	1153	{
1096	struct transfer_args ta;	1154	struct transfer_args ta;
1097		1155
1098	switch (ix)	1156	switch (ix)
1099	{	1157	{
1100	case 0:	1158	case 0:
1101	ta.prev = (struct coro )INT2PTR (coro_cctx , SvIV (ST (0)));	1159	ta.prev = (struct coro )INT2PTR (coro_cctx , SvIV (ST (0)));
1102	ta.next = 0;	1160	ta.next = 0;
1103	ta.flags = TRANSFER_SET_STACKLEVEL;
1104	break;	1161	break;
1105		1162
1106	case 1:	1163	case 1:
1107	if (items != 3)	1164	if (items != 2)
1108	croak ("Coro::State::transfer(prev,next,flags) expects three arguments, not %d", items);	1165	croak ("Coro::State::transfer (prev,next) expects two arguments, not %d", items);
1109		1166
1110	prepare_transfer (&ta, ST (0), ST (1), SvIV (ST (2)));	1167	prepare_transfer (&ta, ST (0), ST (1));
1111	break;	1168	break;
1112		1169
1113	case 2:	1170	case 2:
1114	prepare_schedule (&ta);	1171	prepare_schedule (&ta);
1115	break;	1172	break;
…		…
1117	case 3:	1174	case 3:
1118	prepare_cede (&ta);	1175	prepare_cede (&ta);
1119	break;	1176	break;
1120		1177
1121	case 4:	1178	case 4:
1122	{	1179	if (!prepare_cede_notself (&ta))
1123	SV *yieldstack;	1180	XSRETURN_EMPTY;
1124	SV *sv;
1125	AV *defav = GvAV (PL_defgv);
1126		1181
1127	yieldstack = *hv_fetch (
1128	(HV *)SvRV (GvSV (coro_current)),
1129	"yieldstack", sizeof ("yieldstack") - 1,
1130	0
1131	);
1132
1133	/* set up @_ -- ugly */
1134	av_clear (defav);
1135	av_fill (defav, items - 1);
1136	while (items--)
1137	av_store (defav, items, SvREFCNT_inc (ST(items)));
1138
1139	sv = av_pop ((AV *)SvRV (yieldstack));
1140	ta.prev = SvSTATE (av_fetch ((AV )SvRV (sv), 0, 0));
1141	ta.next = SvSTATE (av_fetch ((AV )SvRV (sv), 1, 0));
1142	ta.flags = 0;
1143	SvREFCNT_dec (sv);
1144	}
1145	break;	1182	break;
1146
1147	}	1183	}
1148		1184
		1185	BARRIER;
1149	TRANSFER (ta);	1186	TRANSFER (ta);
1150	}	1187	}
1151		1188
1152	void	1189	void
1153	_clone_state_from (SV dst, SV src)	1190	_clone_state_from (SV dst, SV src)
…		…
1195	newCONSTSUB (coro_stash, "PRIO_NORMAL", newSViv (PRIO_NORMAL));	1232	newCONSTSUB (coro_stash, "PRIO_NORMAL", newSViv (PRIO_NORMAL));
1196	newCONSTSUB (coro_stash, "PRIO_LOW", newSViv (PRIO_LOW));	1233	newCONSTSUB (coro_stash, "PRIO_LOW", newSViv (PRIO_LOW));
1197	newCONSTSUB (coro_stash, "PRIO_IDLE", newSViv (PRIO_IDLE));	1234	newCONSTSUB (coro_stash, "PRIO_IDLE", newSViv (PRIO_IDLE));
1198	newCONSTSUB (coro_stash, "PRIO_MIN", newSViv (PRIO_MIN));	1235	newCONSTSUB (coro_stash, "PRIO_MIN", newSViv (PRIO_MIN));
1199		1236
1200	coro_current = gv_fetchpv ("Coro::current", TRUE, SVt_PV);	1237	coro_current = get_sv ("Coro::current", FALSE);
1201	coro_idle = gv_fetchpv ("Coro::idle" , TRUE, SVt_PV);	1238	SvREADONLY_on (coro_current);
1202		1239
1203	for (i = PRIO_MAX - PRIO_MIN + 1; i--; )	1240	for (i = PRIO_MAX - PRIO_MIN + 1; i--; )
1204	coro_ready[i] = newAV ();	1241	coro_ready[i] = newAV ();
1205		1242
1206	{	1243	{
1207	SV *sv = perl_get_sv("Coro::API", 1);	1244	SV *sv = perl_get_sv("Coro::API", 1);
1208		1245
1209	coroapi.schedule = api_schedule;	1246	coroapi.schedule = api_schedule;
		1247	coroapi.save = api_save;
1210	coroapi.cede = api_cede;	1248	coroapi.cede = api_cede;
		1249	coroapi.cede_notself = api_cede_notself;
1211	coroapi.ready = api_ready;	1250	coroapi.ready = api_ready;
		1251	coroapi.is_ready = api_is_ready;
1212	coroapi.nready = &coro_nready;	1252	coroapi.nready = &coro_nready;
1213	coroapi.current = coro_current;	1253	coroapi.current = coro_current;
1214		1254
1215	GCoroAPI = &coroapi;	1255	GCoroAPI = &coroapi;
1216	sv_setiv (sv, (IV)&coroapi);	1256	sv_setiv (sv, (IV)&coroapi);
1217	SvREADONLY_on (sv);	1257	SvREADONLY_on (sv);
1218	}	1258	}
1219	}	1259	}
		1260
		1261	void
		1262	_set_current (SV *current)
		1263	PROTOTYPE: $
		1264	CODE:
		1265	SvREFCNT_dec (SvRV (coro_current));
		1266	SvRV_set (coro_current, SvREFCNT_inc (SvRV (current)));
1220		1267
1221	int	1268	int
1222	prio (Coro::State coro, int newprio = 0)	1269	prio (Coro::State coro, int newprio = 0)
1223	ALIAS:	1270	ALIAS:
1224	nice = 1	1271	nice = 1
…		…
1227	RETVAL = coro->prio;	1274	RETVAL = coro->prio;
1228		1275
1229	if (items > 1)	1276	if (items > 1)
1230	{	1277	{
1231	if (ix)	1278	if (ix)
1232	newprio += coro->prio;	1279	newprio = coro->prio - newprio;
1233		1280
1234	if (newprio < PRIO_MIN) newprio = PRIO_MIN;	1281	if (newprio < PRIO_MIN) newprio = PRIO_MIN;
1235	if (newprio > PRIO_MAX) newprio = PRIO_MAX;	1282	if (newprio > PRIO_MAX) newprio = PRIO_MAX;
1236		1283
1237	coro->prio = newprio;	1284	coro->prio = newprio;
1238	}	1285	}
1239	}	1286	}
		1287	OUTPUT:
		1288	RETVAL
1240		1289
1241	void	1290	SV *
1242	ready (SV *self)	1291	ready (SV *self)
1243	PROTOTYPE: $	1292	PROTOTYPE: $
1244	CODE:	1293	CODE:
1245	api_ready (self);	1294	RETVAL = boolSV (api_ready (self));
		1295	OUTPUT:
		1296	RETVAL
		1297
		1298	SV *
		1299	is_ready (SV *self)
		1300	PROTOTYPE: $
		1301	CODE:
		1302	RETVAL = boolSV (api_is_ready (self));
		1303	OUTPUT:
		1304	RETVAL
1246		1305
1247	int	1306	int
1248	nready (...)	1307	nready (...)
1249	PROTOTYPE:	1308	PROTOTYPE:
1250	CODE:	1309	CODE:
…		…
1256		1315
1257	SV *	1316	SV *
1258	_get_state ()	1317	_get_state ()
1259	CODE:	1318	CODE:
1260	{	1319	{
1261	struct {	1320	struct io_state *data;
1262	int errorno;
1263	int laststype;
1264	int laststatval;
1265	Stat_t statcache;
1266	} data;
1267		1321
		1322	RETVAL = newSV (sizeof (struct io_state));
		1323	data = (struct io_state *)SvPVX (RETVAL);
		1324	SvCUR_set (RETVAL, sizeof (struct io_state));
		1325	SvPOK_only (RETVAL);
		1326
1268	data.errorno = errno;	1327	data->errorno = errno;
1269	data.laststype = PL_laststype;	1328	data->laststype = PL_laststype;
1270	data.laststatval = PL_laststatval;	1329	data->laststatval = PL_laststatval;
1271	data.statcache = PL_statcache;	1330	data->statcache = PL_statcache;
1272
1273	RETVAL = newSVpvn ((char *)&data, sizeof data);
1274	}	1331	}
1275	OUTPUT:	1332	OUTPUT:
1276	RETVAL	1333	RETVAL
1277		1334
1278	void	1335	void
1279	_set_state (char *data_)	1336	_set_state (char *data_)
1280	PROTOTYPE: $	1337	PROTOTYPE: $
1281	CODE:	1338	CODE:
1282	{	1339	{
1283	struct {	1340	struct io_state data = (void )data_;
1284	int errorno;
1285	int laststype;
1286	int laststatval;
1287	Stat_t statcache;
1288	} data = (void )data_;
1289		1341
1290	errno = data->errorno;	1342	errno = data->errorno;
1291	PL_laststype = data->laststype;	1343	PL_laststype = data->laststype;
1292	PL_laststatval = data->laststatval;	1344	PL_laststatval = data->laststatval;
1293	PL_statcache = data->statcache;	1345	PL_statcache = data->statcache;
1294	}	1346	}
		1347

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Comparing Coro/Coro/State.xs (file contents): Revision 1.106 by root, Mon Nov 27 02:08:55 2006 UTC vs. Revision 1.132 by root, Fri Dec 29 13:03:05 2006 UTC

Diff Legend

Comparing Coro/Coro/State.xs (file contents):
Revision 1.106 by root, Mon Nov 27 02:08:55 2006 UTC vs.
Revision 1.132 by root, Fri Dec 29 13:03:05 2006 UTC