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

Comparing Coro/Coro/State.xs (file contents):
Revision 1.107 by root, Mon Nov 27 02:15:51 2006 UTC vs.
Revision 1.134 by root, Thu Jan 4 23:49:27 2007 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
…		…
115	/* the stack */	137	/* the stack */
116	void *sptr;	138	void *sptr;
117	long ssize; /* positive == mmap, otherwise malloc */	139	long ssize; /* positive == mmap, otherwise malloc */
118		140
119	/* cpu state */	141	/* cpu state */
120	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 */
121	JMPENV *top_env;	144	JMPENV *top_env;
122	coro_context cctx;	145	coro_context cctx;
123		146
		147	int inuse;
		148
124	#if USE_VALGRIND	149	#if USE_VALGRIND
125	int valgrind_id;	150	int valgrind_id;
126	#endif	151	#endif
127	} 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, /* has never been switched to */
		158	CF_DESTROYED = 0x0008, /* coroutine data has been freed */
		159	};
128		160
129	/* this is a structure representing a perl-level coroutine */	161	/* this is a structure representing a perl-level coroutine */
130	struct coro {	162	struct coro {
131	/* the c coroutine allocated to this perl coroutine, if any */	163	/* the c coroutine allocated to this perl coroutine, if any */
132	coro_cctx *cctx;	164	coro_cctx *cctx;
133		165
134	/* data associated with this coroutine (initial args) */	166	/* data associated with this coroutine (initial args) */
135	AV *args;	167	AV *args;
136	int refcnt;	168	int refcnt;
		169	int save; /* CORO_SAVE flags */
		170	int flags; /* CF_ flags */
137		171
138	/* optionally saved, might be zero */	172	/* optionally saved, might be zero */
139	AV *defav;	173	AV defav; / @_ */
140	SV *defsv;	174	SV defsv; / $_ */
141	SV *errsv;	175	SV errsv; / $@ */
		176	SV irssv; / $/ */
		177	SV irssv_sv; / real $/ cache */
142		178
143	/* saved global state not related to stacks */	179	#define VAR(name,type) type name;
144	U8 dowarn;	180	# include "state.h"
145	I32 in_eval;	181	#undef VAR
146
147	/* the stacks and related info (callchain etc..) */
148	PERL_SI *curstackinfo;
149	AV *curstack;
150	AV *mainstack;
151	SV **stack_sp;
152	OP *op;
153	SV **curpad;
154	AV *comppad;
155	CV *compcv;
156	SV **stack_base;
157	SV **stack_max;
158	SV **tmps_stack;
159	I32 tmps_floor;
160	I32 tmps_ix;
161	I32 tmps_max;
162	I32 *markstack;
163	I32 *markstack_ptr;
164	I32 *markstack_max;
165	I32 *scopestack;
166	I32 scopestack_ix;
167	I32 scopestack_max;
168	ANY *savestack;
169	I32 savestack_ix;
170	I32 savestack_max;
171	OP **retstack;
172	I32 retstack_ix;
173	I32 retstack_max;
174	PMOP *curpm;
175	COP *curcop;
176		182
177	/* coro process data */	183	/* coro process data */
178	int prio;	184	int prio;
179	};	185	};
180		186
…		…
244		250
245	#define PERL_MAGIC_coro PERL_MAGIC_ext	251	#define PERL_MAGIC_coro PERL_MAGIC_ext
246		252
247	static MGVTBL vtbl_coro = {0, 0, 0, 0, coro_cv_free};	253	static MGVTBL vtbl_coro = {0, 0, 0, 0, coro_cv_free};
248		254
		255	#define CORO_MAGIC(cv) \
		256	SvMAGIC (cv) \
		257	? SvMAGIC (cv)->mg_type == PERL_MAGIC_coro \
		258	? SvMAGIC (cv) \
		259	: mg_find ((SV *)cv, PERL_MAGIC_coro) \
		260	: 0
		261
249	/* the next two functions merely cache the padlists */	262	/* the next two functions merely cache the padlists */
250	static void	263	static void
251	get_padlist (CV *cv)	264	get_padlist (CV *cv)
252	{	265	{
253	MAGIC mg = mg_find ((SV )cv, PERL_MAGIC_coro);	266	MAGIC *mg = CORO_MAGIC (cv);
		267	AV *av;
254		268
255	if (mg && AvFILLp ((AV *)mg->mg_obj) >= 0)	269	if (mg && AvFILLp ((av = (AV *)mg->mg_obj)) >= 0)
256	CvPADLIST (cv) = (AV )av_pop ((AV )mg->mg_obj);	270	CvPADLIST (cv) = (AV *)AvARRAY (av)[AvFILLp (av)--];
257	else	271	else
258	{	272	{
259	#if 0	273	#if PREFER_PERL_FUNCTIONS
260	/* this is probably cleaner, but also slower? */	274	/* this is probably cleaner, but also slower? */
261	CV *cp = Perl_cv_clone (cv);	275	CV *cp = Perl_cv_clone (cv);
262	CvPADLIST (cv) = CvPADLIST (cp);	276	CvPADLIST (cv) = CvPADLIST (cp);
263	CvPADLIST (cp) = 0;	277	CvPADLIST (cp) = 0;
264	SvREFCNT_dec (cp);	278	SvREFCNT_dec (cp);
…		…
269	}	283	}
270		284
271	static void	285	static void
272	put_padlist (CV *cv)	286	put_padlist (CV *cv)
273	{	287	{
274	MAGIC mg = mg_find ((SV )cv, PERL_MAGIC_coro);	288	MAGIC *mg = CORO_MAGIC (cv);
		289	AV *av;
275		290
276	if (!mg)	291	if (!mg)
277	{	292	{
278	sv_magic ((SV *)cv, 0, PERL_MAGIC_coro, 0, 0);	293	sv_magic ((SV *)cv, 0, PERL_MAGIC_coro, 0, 0);
279	mg = mg_find ((SV *)cv, PERL_MAGIC_coro);	294	mg = mg_find ((SV *)cv, PERL_MAGIC_coro);
280	mg->mg_virtual = &vtbl_coro;	295	mg->mg_virtual = &vtbl_coro;
281	mg->mg_obj = (SV *)newAV ();	296	mg->mg_obj = (SV *)newAV ();
282	}	297	}
283		298
284	av_push ((AV )mg->mg_obj, (SV )CvPADLIST (cv));	299	av = (AV *)mg->mg_obj;
		300
		301	if (AvFILLp (av) >= AvMAX (av))
		302	av_extend (av, AvMAX (av) + 1);
		303
		304	AvARRAY (av)[++AvFILLp (av)] = (SV *)CvPADLIST (cv);
285	}	305	}
286		306
287	#define SB do {	307	#define SB do {
288	#define SE } while (0)	308	#define SE } while (0)
289		309
290	#define LOAD(state) load_state((state));
291	#define SAVE(state,flags) save_state((state),(flags));
292
293	#define REPLACE_SV(sv,val) SB SvREFCNT_dec(sv); (sv) = (val); (val) = 0; SE	310	#define REPLACE_SV(sv,val) SB SvREFCNT_dec (sv); (sv) = (val); (val) = 0; SE
294		311
295	static void	312	static void
296	load_state(Coro__State c)	313	load_perl (Coro__State c)
297	{	314	{
298	PL_dowarn = c->dowarn;	315	#define VAR(name,type) PL_ ## name = c->name;
299	PL_in_eval = c->in_eval;	316	# include "state.h"
300		317	#undef VAR
301	PL_curstackinfo = c->curstackinfo;
302	PL_curstack = c->curstack;
303	PL_mainstack = c->mainstack;
304	PL_stack_sp = c->stack_sp;
305	PL_op = c->op;
306	PL_curpad = c->curpad;
307	PL_comppad = c->comppad;
308	PL_compcv = c->compcv;
309	PL_stack_base = c->stack_base;
310	PL_stack_max = c->stack_max;
311	PL_tmps_stack = c->tmps_stack;
312	PL_tmps_floor = c->tmps_floor;
313	PL_tmps_ix = c->tmps_ix;
314	PL_tmps_max = c->tmps_max;
315	PL_markstack = c->markstack;
316	PL_markstack_ptr = c->markstack_ptr;
317	PL_markstack_max = c->markstack_max;
318	PL_scopestack = c->scopestack;
319	PL_scopestack_ix = c->scopestack_ix;
320	PL_scopestack_max = c->scopestack_max;
321	PL_savestack = c->savestack;
322	PL_savestack_ix = c->savestack_ix;
323	PL_savestack_max = c->savestack_max;
324	#if !PERL_VERSION_ATLEAST (5,9,0)
325	PL_retstack = c->retstack;
326	PL_retstack_ix = c->retstack_ix;
327	PL_retstack_max = c->retstack_max;
328	#endif
329	PL_curpm = c->curpm;
330	PL_curcop = c->curcop;
331		318
332	if (c->defav) REPLACE_SV (GvAV (PL_defgv), c->defav);	319	if (c->defav) REPLACE_SV (GvAV (PL_defgv), c->defav);
333	if (c->defsv) REPLACE_SV (DEFSV , c->defsv);	320	if (c->defsv) REPLACE_SV (DEFSV , c->defsv);
334	if (c->errsv) REPLACE_SV (ERRSV , c->errsv);	321	if (c->errsv) REPLACE_SV (ERRSV , c->errsv);
		322	if (c->irssv)
		323	{
		324	if (c->irssv == PL_rs \|\| sv_eq (PL_rs, c->irssv))
		325	SvREFCNT_dec (c->irssv);
		326	else
		327	{
		328	REPLACE_SV (PL_rs, c->irssv);
		329	if (!c->irssv_sv) c->irssv_sv = get_sv ("/", 0);
		330	sv_setsv (c->irssv_sv, PL_rs);
		331	}
		332	}
335		333
336	{	334	{
337	dSP;	335	dSP;
338	CV *cv;	336	CV *cv;
339		337
340	/* now do the ugly restore mess */	338	/* now do the ugly restore mess */
341	while ((cv = (CV *)POPs))	339	while ((cv = (CV *)POPs))
342	{	340	{
343	AV padlist = (AV )POPs;
344
345	if (padlist)
346	{
347	put_padlist (cv); /* mark this padlist as available */	341	put_padlist (cv); /* mark this padlist as available */
348	CvPADLIST(cv) = padlist;	342	CvDEPTH (cv) = PTR2IV (POPs);
349	}	343	CvPADLIST (cv) = (AV *)POPs;
350
351	++CvDEPTH(cv);
352	}	344	}
353		345
354	PUTBACK;	346	PUTBACK;
355	}	347	}
356	}	348	}
357		349
358	static void	350	static void
359	save_state(Coro__State c, int flags)	351	save_perl (Coro__State c)
360	{	352	{
361	{	353	{
362	dSP;	354	dSP;
363	I32 cxix = cxstack_ix;	355	I32 cxix = cxstack_ix;
364	PERL_CONTEXT *ccstk = cxstack;	356	PERL_CONTEXT *ccstk = cxstack;
…		…
367	/*	359	/*
368	* the worst thing you can imagine happens first - we have to save	360	* the worst thing you can imagine happens first - we have to save
369	* (and reinitialize) all cv's in the whole callchain :(	361	* (and reinitialize) all cv's in the whole callchain :(
370	*/	362	*/
371		363
		364	EXTEND (SP, 3 + 1);
372	PUSHs (Nullsv);	365	PUSHs (Nullsv);
373	/* this loop was inspired by pp_caller */	366	/* this loop was inspired by pp_caller */
374	for (;;)	367	for (;;)
375	{	368	{
376	while (cxix >= 0)	369	while (cxix >= 0)
377	{	370	{
378	PERL_CONTEXT *cx = &ccstk[cxix--];	371	PERL_CONTEXT *cx = &ccstk[cxix--];
379		372
380	if (CxTYPE(cx) == CXt_SUB)	373	if (CxTYPE (cx) == CXt_SUB)
381	{	374	{
382	CV *cv = cx->blk_sub.cv;	375	CV *cv = cx->blk_sub.cv;
		376
383	if (CvDEPTH(cv))	377	if (CvDEPTH (cv))
384	{	378	{
385	EXTEND (SP, CvDEPTH(cv)*2);	379	EXTEND (SP, 3);
386
387	while (--CvDEPTH(cv))
388	{
389	/* this tells the restore code to increment CvDEPTH */
390	PUSHs (Nullsv);
391	PUSHs ((SV *)cv);
392	}
393
394	PUSHs ((SV *)CvPADLIST(cv));	380	PUSHs ((SV *)CvPADLIST (cv));
		381	PUSHs (INT2PTR (SV *, CvDEPTH (cv)));
395	PUSHs ((SV *)cv);	382	PUSHs ((SV *)cv);
396		383
		384	CvDEPTH (cv) = 0;
397	get_padlist (cv);	385	get_padlist (cv);
398	}	386	}
399	}	387	}
400	#ifdef CXt_FORMAT
401	else if (CxTYPE(cx) == CXt_FORMAT)
402	{
403	/* I never used formats, so how should I know how these are implemented? */
404	/* my bold guess is as a simple, plain sub... */
405	croak ("CXt_FORMAT not yet handled. Don't switch coroutines from within formats");
406	}
407	#endif
408	}	388	}
409		389
410	if (top_si->si_type == PERLSI_MAIN)	390	if (top_si->si_type == PERLSI_MAIN)
411	break;	391	break;
412		392
…		…
416	}	396	}
417		397
418	PUTBACK;	398	PUTBACK;
419	}	399	}
420		400
421	c->defav = flags & TRANSFER_SAVE_DEFAV ? (AV *)SvREFCNT_inc (GvAV (PL_defgv)) : 0;	401	c->defav = c->save & CORO_SAVE_DEFAV ? (AV *)SvREFCNT_inc (GvAV (PL_defgv)) : 0;
422	c->defsv = flags & TRANSFER_SAVE_DEFSV ? SvREFCNT_inc (DEFSV) : 0;	402	c->defsv = c->save & CORO_SAVE_DEFSV ? SvREFCNT_inc (DEFSV) : 0;
423	c->errsv = flags & TRANSFER_SAVE_ERRSV ? SvREFCNT_inc (ERRSV) : 0;	403	c->errsv = c->save & CORO_SAVE_ERRSV ? SvREFCNT_inc (ERRSV) : 0;
		404	c->irssv = c->save & CORO_SAVE_IRSSV ? SvREFCNT_inc (PL_rs) : 0;
424		405
425	c->dowarn = PL_dowarn;	406	#define VAR(name,type)c->name = PL_ ## name;
426	c->in_eval = PL_in_eval;	407	# include "state.h"
427		408	#undef VAR
428	c->curstackinfo = PL_curstackinfo;
429	c->curstack = PL_curstack;
430	c->mainstack = PL_mainstack;
431	c->stack_sp = PL_stack_sp;
432	c->op = PL_op;
433	c->curpad = PL_curpad;
434	c->comppad = PL_comppad;
435	c->compcv = PL_compcv;
436	c->stack_base = PL_stack_base;
437	c->stack_max = PL_stack_max;
438	c->tmps_stack = PL_tmps_stack;
439	c->tmps_floor = PL_tmps_floor;
440	c->tmps_ix = PL_tmps_ix;
441	c->tmps_max = PL_tmps_max;
442	c->markstack = PL_markstack;
443	c->markstack_ptr = PL_markstack_ptr;
444	c->markstack_max = PL_markstack_max;
445	c->scopestack = PL_scopestack;
446	c->scopestack_ix = PL_scopestack_ix;
447	c->scopestack_max = PL_scopestack_max;
448	c->savestack = PL_savestack;
449	c->savestack_ix = PL_savestack_ix;
450	c->savestack_max = PL_savestack_max;
451	#if !PERL_VERSION_ATLEAST (5,9,0)
452	c->retstack = PL_retstack;
453	c->retstack_ix = PL_retstack_ix;
454	c->retstack_max = PL_retstack_max;
455	#endif
456	c->curpm = PL_curpm;
457	c->curcop = PL_curcop;
458	}	409	}
459		410
460	/*	411	/*
461	* allocate various perl stacks. This is an exact copy	412	* allocate various perl stacks. This is an exact copy
462	* of perl.c:init_stacks, except that it uses less memory	413	* of perl.c:init_stacks, except that it uses less memory
463	* on the (sometimes correct) assumption that coroutines do	414	* on the (sometimes correct) assumption that coroutines do
464	* not usually need a lot of stackspace.	415	* not usually need a lot of stackspace.
465	*/	416	*/
		417	#if PREFER_PERL_FUNCTIONS
		418	# define coro_init_stacks init_stacks
		419	#else
466	static void	420	static void
467	coro_init_stacks ()	421	coro_init_stacks ()
468	{	422	{
469	PL_curstackinfo = new_stackinfo(96, 1024/sizeof(PERL_CONTEXT) - 1);	423	PL_curstackinfo = new_stackinfo(128, 1024/sizeof(PERL_CONTEXT));
470	PL_curstackinfo->si_type = PERLSI_MAIN;	424	PL_curstackinfo->si_type = PERLSI_MAIN;
471	PL_curstack = PL_curstackinfo->si_stack;	425	PL_curstack = PL_curstackinfo->si_stack;
472	PL_mainstack = PL_curstack; /* remember in case we switch stacks */	426	PL_mainstack = PL_curstack; /* remember in case we switch stacks */
473		427
474	PL_stack_base = AvARRAY(PL_curstack);	428	PL_stack_base = AvARRAY(PL_curstack);
475	PL_stack_sp = PL_stack_base;	429	PL_stack_sp = PL_stack_base;
476	PL_stack_max = PL_stack_base + AvMAX(PL_curstack);	430	PL_stack_max = PL_stack_base + AvMAX(PL_curstack);
477		431
478	New(50,PL_tmps_stack,96,SV*);	432	New(50,PL_tmps_stack,128,SV*);
479	PL_tmps_floor = -1;	433	PL_tmps_floor = -1;
480	PL_tmps_ix = -1;	434	PL_tmps_ix = -1;
481	PL_tmps_max = 96;	435	PL_tmps_max = 128;
482		436
483	New(54,PL_markstack,16,I32);	437	New(54,PL_markstack,32,I32);
484	PL_markstack_ptr = PL_markstack;	438	PL_markstack_ptr = PL_markstack;
485	PL_markstack_max = PL_markstack + 16;	439	PL_markstack_max = PL_markstack + 32;
486		440
487	#ifdef SET_MARK_OFFSET	441	#ifdef SET_MARK_OFFSET
488	SET_MARK_OFFSET;	442	SET_MARK_OFFSET;
489	#endif	443	#endif
490		444
491	New(54,PL_scopestack,16,I32);	445	New(54,PL_scopestack,32,I32);
492	PL_scopestack_ix = 0;	446	PL_scopestack_ix = 0;
493	PL_scopestack_max = 16;	447	PL_scopestack_max = 32;
494		448
495	New(54,PL_savestack,96,ANY);	449	New(54,PL_savestack,64,ANY);
496	PL_savestack_ix = 0;	450	PL_savestack_ix = 0;
497	PL_savestack_max = 96;	451	PL_savestack_max = 64;
498		452
499	#if !PERL_VERSION_ATLEAST (5,9,0)	453	#if !PERL_VERSION_ATLEAST (5,9,0)
500	New(54,PL_retstack,8,OP*);	454	New(54,PL_retstack,16,OP*);
501	PL_retstack_ix = 0;	455	PL_retstack_ix = 0;
502	PL_retstack_max = 8;	456	PL_retstack_max = 16;
503	#endif	457	#endif
504	}	458	}
		459	#endif
505		460
506	/*	461	/*
507	* destroy the stacks, the callchain etc...	462	* destroy the stacks, the callchain etc...
508	*/	463	*/
509	static void	464	static void
510	coro_destroy_stacks ()	465	coro_destroy_stacks ()
511	{	466	{
512	if (!IN_DESTRUCT)	467	if (!IN_DESTRUCT)
513	{	468	{
514	/* is this ugly, I ask? */	469	/* restore all saved variables and stuff */
515	LEAVE_SCOPE (0);	470	LEAVE_SCOPE (0);
		471	assert (PL_tmps_floor == -1);
516		472
517	/* sure it is, but more important: is it correct?? :/ */	473	/* free all temporaries */
518	FREETMPS;	474	FREETMPS;
		475	assert (PL_tmps_ix == -1);
519		476
		477	/* unwind all extra stacks */
520	/POPSTACK_TO (PL_mainstack);//D//use/	478	POPSTACK_TO (PL_mainstack);
		479
		480	/* unwind main stack */
		481	dounwind (-1);
521	}	482	}
522		483
523	while (PL_curstackinfo->si_next)	484	while (PL_curstackinfo->si_next)
524	PL_curstackinfo = PL_curstackinfo->si_next;	485	PL_curstackinfo = PL_curstackinfo->si_next;
525		486
526	while (PL_curstackinfo)	487	while (PL_curstackinfo)
527	{	488	{
528	PERL_SI *p = PL_curstackinfo->si_prev;	489	PERL_SI *p = PL_curstackinfo->si_prev;
529		490
530	{ /D//remove/
531	dSP;
532	SWITCHSTACK (PL_curstack, PL_curstackinfo->si_stack);
533	PUTBACK; /* possibly superfluous */
534	}
535
536	if (!IN_DESTRUCT)	491	if (!IN_DESTRUCT)
537	{
538	dounwind (-1);/D//remove/
539	SvREFCNT_dec (PL_curstackinfo->si_stack);	492	SvREFCNT_dec (PL_curstackinfo->si_stack);
540	}
541		493
542	Safefree (PL_curstackinfo->si_cxstack);	494	Safefree (PL_curstackinfo->si_cxstack);
543	Safefree (PL_curstackinfo);	495	Safefree (PL_curstackinfo);
544	PL_curstackinfo = p;	496	PL_curstackinfo = p;
545	}	497	}
…		…
560	* emulate part of the perl startup here.	512	* emulate part of the perl startup here.
561	*/	513	*/
562		514
563	coro_init_stacks ();	515	coro_init_stacks ();
564		516
565	PL_curcop = 0;	517	PL_curcop = &PL_compiling;
566	PL_in_eval = 0;	518	PL_in_eval = EVAL_NULL;
567	PL_curpm = 0;	519	PL_curpm = 0;
		520	PL_localizing = 0;
		521	PL_dirty = 0;
		522	PL_restartop = 0;
568		523
569	{	524	{
570	dSP;	525	dSP;
571	LOGOP myop;	526	LOGOP myop;
572		527
573	/* I have no idea why this is needed, but it is */
574	PUSHMARK (SP);
575
576	SvREFCNT_dec (GvAV (PL_defgv));	528	SvREFCNT_dec (GvAV (PL_defgv));
577	GvAV (PL_defgv) = coro->args; coro->args = 0;	529	GvAV (PL_defgv) = coro->args; coro->args = 0;
578		530
579	Zero (&myop, 1, LOGOP);	531	Zero (&myop, 1, LOGOP);
580	myop.op_next = Nullop;	532	myop.op_next = Nullop;
581	myop.op_flags = OPf_WANT_VOID;	533	myop.op_flags = OPf_WANT_VOID;
582		534
583	PL_op = (OP *)&myop;
584
585	PUSHMARK (SP);	535	PUSHMARK (SP);
586	XPUSHs ((SV *)get_cv ("Coro::State::_coro_init", FALSE));	536	XPUSHs ((SV *)get_cv ("Coro::State::_coro_init", FALSE));
587	PUTBACK;	537	PUTBACK;
		538	PL_op = (OP *)&myop;
588	PL_op = PL_ppaddr[OP_ENTERSUB](aTHX);	539	PL_op = PL_ppaddr[OP_ENTERSUB](aTHX);
589	SPAGAIN;	540	SPAGAIN;
590
591	ENTER; /* necessary e.g. for dounwind */
592	}	541	}
		542
		543	ENTER; /* necessary e.g. for dounwind */
593	}	544	}
594		545
595	static void	546	static void
596	free_coro_mortal ()	547	free_coro_mortal ()
597	{	548	{
…		…
600	SvREFCNT_dec (coro_mortal);	551	SvREFCNT_dec (coro_mortal);
601	coro_mortal = 0;	552	coro_mortal = 0;
602	}	553	}
603	}	554	}
604		555
		556	/* inject a fake call to Coro::State::_cctx_init into the execution */
605	static void NOINLINE	557	static void NOINLINE
606	prepare_cctx (coro_cctx *cctx)	558	prepare_cctx (coro_cctx *cctx)
607	{	559	{
608	dSP;	560	dSP;
609	LOGOP myop;	561	LOGOP myop;
610		562
611	Zero (&myop, 1, LOGOP);	563	Zero (&myop, 1, LOGOP);
612	myop.op_next = PL_op;	564	myop.op_next = PL_op;
613	myop.op_flags = OPf_WANT_VOID;	565	myop.op_flags = OPf_WANT_VOID \| OPf_STACKED;
614
615	sv_setiv (get_sv ("Coro::State::_cctx", FALSE), PTR2IV (cctx));
616		566
617	PUSHMARK (SP);	567	PUSHMARK (SP);
		568	EXTEND (SP, 2);
		569	PUSHs (sv_2mortal (newSViv (PTR2IV (cctx))));
618	XPUSHs ((SV *)get_cv ("Coro::State::_cctx_init", FALSE));	570	PUSHs ((SV *)get_cv ("Coro::State::_cctx_init", FALSE));
619	PUTBACK;	571	PUTBACK;
		572	PL_op = (OP *)&myop;
620	PL_restartop = PL_ppaddr[OP_ENTERSUB](aTHX);	573	PL_op = PL_ppaddr[OP_ENTERSUB](aTHX);
621	SPAGAIN;	574	SPAGAIN;
622	}	575	}
623		576
624	static void	577	static void
625	coro_run (void *arg)	578	coro_run (void *arg)
626	{	579	{
627	/* coro_run is the alternative epilogue of transfer() */	580	/* coro_run is the alternative tail of transfer(), so unlock here. */
628	UNLOCK;	581	UNLOCK;
629		582
630	/*	583	/*
631	* this is a _very_ stripped down perl interpreter ;)	584	* this is a _very_ stripped down perl interpreter ;)
632	*/	585	*/
…		…
634		587
635	/* inject call to cctx_init */	588	/* inject call to cctx_init */
636	prepare_cctx ((coro_cctx *)arg);	589	prepare_cctx ((coro_cctx *)arg);
637		590
638	/* somebody will hit me for both perl_run and PL_restartop */	591	/* somebody will hit me for both perl_run and PL_restartop */
		592	PL_restartop = PL_op;
639	perl_run (PL_curinterp);	593	perl_run (PL_curinterp);
640		594
641	fputs ("FATAL: C coroutine fell over the edge of the world, aborting. Did you call exit in a coroutine?\n", stderr);	595	fputs ("FATAL: C coroutine fell over the edge of the world, aborting. Did you call exit in a coroutine?\n", stderr);
642	abort ();	596	abort ();
643	}	597	}
…		…
647	{	601	{
648	coro_cctx *cctx;	602	coro_cctx *cctx;
649		603
650	++cctx_count;	604	++cctx_count;
651		605
652	New (0, cctx, 1, coro_cctx);	606	Newz (0, cctx, 1, coro_cctx);
653		607
654	#if HAVE_MMAP	608	#if HAVE_MMAP
655		609
656	cctx->ssize = ((STACKSIZE * sizeof (long) + PAGESIZE - 1) / PAGESIZE + STACKGUARD) * PAGESIZE;	610	cctx->ssize = ((STACKSIZE * sizeof (long) + PAGESIZE - 1) / PAGESIZE + STACKGUARD) * PAGESIZE;
657	/* mmap suppsedly does allocate-on-write for us */	611	/* mmap supposedly does allocate-on-write for us */
658	cctx->sptr = mmap (0, cctx->ssize, PROT_EXEC\|PROT_READ\|PROT_WRITE, MAP_PRIVATE\|MAP_ANONYMOUS, 0, 0);	612	cctx->sptr = mmap (0, cctx->ssize, PROT_EXEC\|PROT_READ\|PROT_WRITE, MAP_PRIVATE\|MAP_ANONYMOUS, 0, 0);
659		613
660	if (cctx->sptr == (void *)-1)	614	if (cctx->sptr == (void *)-1)
661	{	615	{
662	perror ("FATAL: unable to mmap stack for coroutine");	616	perror ("FATAL: unable to mmap stack for coroutine");
…		…
691		645
692	return cctx;	646	return cctx;
693	}	647	}
694		648
695	static void	649	static void
696	cctx_free (coro_cctx *cctx)	650	cctx_destroy (coro_cctx *cctx)
697	{	651	{
698	if (!cctx)	652	if (!cctx)
699	return;	653	return;
700		654
701	--cctx_count;	655	--cctx_count;
…		…
718	{	672	{
719	coro_cctx *cctx;	673	coro_cctx *cctx;
720		674
721	if (cctx_first)	675	if (cctx_first)
722	{	676	{
723	--cctx_idle;
724	cctx = cctx_first;	677	cctx = cctx_first;
725	cctx_first = cctx->next;	678	cctx_first = cctx->next;
		679	--cctx_idle;
726	}	680	}
727	else	681	else
728	{	682	{
729	cctx = cctx_new ();	683	cctx = cctx_new ();
730	PL_op = PL_op->op_next;	684	PL_op = PL_op->op_next;
…		…
734	}	688	}
735		689
736	static void	690	static void
737	cctx_put (coro_cctx *cctx)	691	cctx_put (coro_cctx *cctx)
738	{	692	{
		693	/* free another cctx if overlimit */
		694	if (cctx_idle >= MAX_IDLE_CCTX)
		695	{
		696	coro_cctx *first = cctx_first;
		697	cctx_first = first->next;
		698	--cctx_idle;
		699
		700	assert (!first->inuse);
		701	cctx_destroy (first);
		702	}
		703
739	++cctx_idle;	704	++cctx_idle;
740	cctx->next = cctx_first;	705	cctx->next = cctx_first;
741	cctx_first = cctx;	706	cctx_first = cctx;
742	}	707	}
743		708
744	/* never call directly, always through the coro_state_transfer global variable */	709	/* never call directly, always through the coro_state_transfer global variable */
745	static void NOINLINE	710	static void NOINLINE
746	transfer (struct coro prev, struct coro next, int flags)	711	transfer (struct coro prev, struct coro next)
747	{	712	{
748	dSTACKLEVEL;	713	dSTACKLEVEL;
749		714
750	/* sometimes transfer is only called to set idle_sp */	715	/* sometimes transfer is only called to set idle_sp */
751	if (flags == TRANSFER_SET_STACKLEVEL)	716	if (!next)
		717	{
752	((coro_cctx *)prev)->idle_sp = STACKLEVEL;	718	((coro_cctx *)prev)->idle_sp = STACKLEVEL;
		719	assert (((coro_cctx )prev)->idle_te = PL_top_env); / just for the side-effect when asserts are enabled */
		720	}
753	else if (prev != next)	721	else if (prev != next)
754	{	722	{
755	coro_cctx *prev__cctx;	723	coro_cctx *prev__cctx;
756		724
		725	if (prev->flags & CF_NEW)
		726	{
		727	/* create a new empty context */
		728	Newz (0, prev->cctx, 1, coro_cctx);
		729	prev->cctx->inuse = 1;
		730	prev->flags &= ~CF_NEW;
		731	prev->flags \|= CF_RUNNING;
		732	}
		733
		734	/TODO: must not croak here /
		735	if (!prev->flags & CF_RUNNING)
		736	croak ("Coro::State::transfer called with non-running prev Coro::State, but can only transfer from running states");
		737
		738	if (next->flags & CF_RUNNING)
		739	croak ("Coro::State::transfer called with running next Coro::State, but can only transfer to inactive states");
		740
		741	if (next->flags & CF_DESTROYED)
		742	croak ("Coro::State::transfer called with destroyed next Coro::State, but can only transfer to inactive states");
		743
		744	prev->flags &= ~CF_RUNNING;
		745	next->flags \|= CF_RUNNING;
		746
757	LOCK;	747	LOCK;
758		748
759	if (next->mainstack)	749	if (next->flags & CF_NEW)
760	{	750	{
761	/* coroutine already started */	751	/* need to start coroutine */
762	SAVE (prev, flags);	752	next->flags &= ~CF_NEW;
763	LOAD (next);	753	/* first get rid of the old state */
		754	save_perl (prev);
		755	/* setup coroutine call */
		756	setup_coro (next);
		757	/* need a new stack */
		758	assert (!next->cctx);
764	}	759	}
765	else	760	else
766	{	761	{
767	/* need to start coroutine */	762	/* coroutine already started */
768	/* first get rid of the old state */	763	save_perl (prev);
769	SAVE (prev, -1);	764	load_perl (next);
770	/* setup coroutine call */
771	setup_coro (next);
772	/* need a stack */
773	next->cctx = 0;
774	}	765	}
775
776	if (!prev->cctx)
777	/* create a new empty context */
778	Newz (0, prev->cctx, 1, coro_cctx);
779		766
780	prev__cctx = prev->cctx;	767	prev__cctx = prev->cctx;
781		768
782	/* possibly "free" the cctx */	769	/* possibly "free" the cctx */
783	if (prev__cctx->idle_sp == STACKLEVEL)	770	if (prev__cctx->idle_sp == STACKLEVEL)
784	{	771	{
		772	/* I assume that STACKLEVEL is a stronger indicator than PL_top_env changes */
		773	assert (("ERROR: current top_env must equal previous top_env", PL_top_env == prev__cctx->idle_te));
		774
		775	prev->cctx = 0;
		776
785	cctx_put (prev__cctx);	777	cctx_put (prev__cctx);
786	prev->cctx = 0;	778	prev__cctx->inuse = 0;
787	}	779	}
788		780
789	if (!next->cctx)	781	if (!next->cctx)
		782	{
790	next->cctx = cctx_get ();	783	next->cctx = cctx_get ();
		784	assert (!next->cctx->inuse);
		785	next->cctx->inuse = 1;
		786	}
791		787
792	if (prev__cctx != next->cctx)	788	if (prev__cctx != next->cctx)
793	{	789	{
794	prev__cctx->top_env = PL_top_env;	790	prev__cctx->top_env = PL_top_env;
795	PL_top_env = next->cctx->top_env;	791	PL_top_env = next->cctx->top_env;
796	coro_transfer (&prev__cctx->cctx, &next->cctx->cctx);	792	coro_transfer (&prev__cctx->cctx, &next->cctx->cctx);
797	}	793	}
798		794
799	free_coro_mortal ();	795	free_coro_mortal ();
800
801	UNLOCK;	796	UNLOCK;
802	}	797	}
803	}	798	}
804		799
805	struct transfer_args	800	struct transfer_args
806	{	801	{
807	struct coro prev, next;	802	struct coro prev, next;
808	int flags;
809	};	803	};
810		804
811	#define TRANSFER(ta) transfer ((ta).prev, (ta).next, (ta).flags)	805	#define TRANSFER(ta) transfer ((ta).prev, (ta).next)
812		806
813	static void	807	static int
814	coro_state_destroy (struct coro *coro)	808	coro_state_destroy (struct coro *coro)
815	{	809	{
816	if (coro->refcnt--)	810	if (coro->flags & CF_DESTROYED)
817	return;	811	return 0;
		812
		813	coro->flags \|= CF_DESTROYED;
818		814
819	if (coro->mainstack && coro->mainstack != main_mainstack)	815	if (coro->mainstack && coro->mainstack != main_mainstack)
820	{	816	{
		817	assert (!(coro->flags & CF_RUNNING));
		818
821	struct coro temp;	819	struct coro temp;
		820	Zero (&temp, 1, struct coro);
		821	temp.save = CORO_SAVE_ALL;
822		822
823	SAVE ((&temp), TRANSFER_SAVE_ALL);	823	if (coro->flags & CF_RUNNING)
824	LOAD (coro);	824	croak ("FATAL: tried to destroy currently running coroutine");
		825
		826	save_perl (&temp);
		827	load_perl (coro);
825		828
826	coro_destroy_stacks ();	829	coro_destroy_stacks ();
827		830
828	LOAD ((&temp)); /* this will get rid of defsv etc.. */	831	load_perl (&temp); /* this will get rid of defsv etc.. */
829		832
830	coro->mainstack = 0;	833	coro->mainstack = 0;
831	}	834	}
832		835
833	cctx_free (coro->cctx);	836	cctx_destroy (coro->cctx);
834	SvREFCNT_dec (coro->args);	837	SvREFCNT_dec (coro->args);
835	Safefree (coro);	838
		839	return 1;
836	}	840	}
837		841
838	static int	842	static int
839	coro_state_clear (pTHX_ SV sv, MAGIC mg)	843	coro_state_free (pTHX_ SV sv, MAGIC mg)
840	{	844	{
841	struct coro coro = (struct coro )mg->mg_ptr;	845	struct coro coro = (struct coro )mg->mg_ptr;
842	mg->mg_ptr = 0;	846	mg->mg_ptr = 0;
843		847
		848	if (--coro->refcnt < 0)
		849	{
844	coro_state_destroy (coro);	850	coro_state_destroy (coro);
		851	Safefree (coro);
		852	}
845		853
846	return 0;	854	return 0;
847	}	855	}
848		856
849	static int	857	static int
…		…
856	return 0;	864	return 0;
857	}	865	}
858		866
859	static MGVTBL coro_state_vtbl = {	867	static MGVTBL coro_state_vtbl = {
860	0, 0, 0, 0,	868	0, 0, 0, 0,
861	coro_state_clear,	869	coro_state_free,
862	0,	870	0,
863	#ifdef MGf_DUP	871	#ifdef MGf_DUP
864	coro_state_dup,	872	coro_state_dup,
865	#else	873	#else
866	# define MGf_DUP 0	874	# define MGf_DUP 0
…		…
888	assert (mg->mg_type == PERL_MAGIC_ext);	896	assert (mg->mg_type == PERL_MAGIC_ext);
889	return (struct coro *)mg->mg_ptr;	897	return (struct coro *)mg->mg_ptr;
890	}	898	}
891		899
892	static void	900	static void
893	prepare_transfer (struct transfer_args ta, SV prev, SV *next, int flags)	901	prepare_transfer (struct transfer_args ta, SV prev_sv, SV *next_sv)
894	{	902	{
895	ta->prev = SvSTATE (prev);	903	ta->prev = SvSTATE (prev_sv);
896	ta->next = SvSTATE (next);	904	ta->next = SvSTATE (next_sv);
897	ta->flags = flags;
898	}	905	}
899		906
900	static void	907	static void
901	api_transfer (SV prev, SV next, int flags)	908	api_transfer (SV prev_sv, SV next_sv)
902	{	909	{
903	dTHX;
904	struct transfer_args ta;	910	struct transfer_args ta;
905		911
906	prepare_transfer (&ta, prev, next, flags);	912	prepare_transfer (&ta, prev_sv, next_sv);
907	TRANSFER (ta);	913	TRANSFER (ta);
		914	}
		915
		916	static int
		917	api_save (SV *coro_sv, int new_save)
		918	{
		919	struct coro *coro = SvSTATE (coro_sv);
		920	int old_save = coro->save;
		921
		922	if (new_save >= 0)
		923	coro->save = new_save;
		924
		925	return old_save;
908	}	926	}
909		927
910	/ Coro ******************************************************************/	928	/ Coro ******************************************************************/
911		929
912	#define PRIO_MAX 3	930	#define PRIO_MAX 3
…		…
915	#define PRIO_LOW -1	933	#define PRIO_LOW -1
916	#define PRIO_IDLE -3	934	#define PRIO_IDLE -3
917	#define PRIO_MIN -4	935	#define PRIO_MIN -4
918		936
919	/* for Coro.pm */	937	/* for Coro.pm */
920	static GV coro_current, coro_idle;	938	static SV *coro_current;
921	static AV *coro_ready [PRIO_MAX-PRIO_MIN+1];	939	static AV *coro_ready [PRIO_MAX-PRIO_MIN+1];
922	static int coro_nready;	940	static int coro_nready;
923		941
924	static void	942	static void
925	coro_enq (SV *sv)	943	coro_enq (SV *coro_sv)
926	{	944	{
927	int prio;
928
929	if (SvTYPE (sv) != SVt_PVHV)
930	croak ("Coro::ready tried to enqueue something that is not a coroutine");
931
932	prio = SvSTATE (sv)->prio;
933
934	av_push (coro_ready [prio - PRIO_MIN], sv);	945	av_push (coro_ready [SvSTATE (coro_sv)->prio - PRIO_MIN], coro_sv);
935	coro_nready++;	946	coro_nready++;
936	}	947	}
937		948
938	static SV *	949	static SV *
939	coro_deq (int min_prio)	950	coro_deq (int min_prio)
…		…
952	}	963	}
953		964
954	return 0;	965	return 0;
955	}	966	}
956		967
957	static void	968	static int
958	api_ready (SV *coro)	969	api_ready (SV *coro_sv)
959	{	970	{
960	dTHX;	971	struct coro *coro;
961		972
962	if (SvROK (coro))	973	if (SvROK (coro_sv))
963	coro = SvRV (coro);	974	coro_sv = SvRV (coro_sv);
		975
		976	coro = SvSTATE (coro_sv);
		977
		978	if (coro->flags & CF_READY)
		979	return 0;
		980
		981	coro->flags \|= CF_READY;
964		982
965	LOCK;	983	LOCK;
966	coro_enq (SvREFCNT_inc (coro));	984	coro_enq (SvREFCNT_inc (coro_sv));
967	UNLOCK;	985	UNLOCK;
		986
		987	return 1;
		988	}
		989
		990	static int
		991	api_is_ready (SV *coro_sv)
		992	{
		993	return !!(SvSTATE (coro_sv)->flags & CF_READY);
968	}	994	}
969		995
970	static void	996	static void
971	prepare_schedule (struct transfer_args *ta)	997	prepare_schedule (struct transfer_args *ta)
972	{	998	{
973	SV current, prev, *next;	999	SV prev_sv, next_sv;
974
975	current = GvSV (coro_current);
976		1000
977	for (;;)	1001	for (;;)
978	{	1002	{
979	LOCK;	1003	LOCK;
980	next = coro_deq (PRIO_MIN);	1004	next_sv = coro_deq (PRIO_MIN);
981	UNLOCK;	1005	UNLOCK;
982		1006
		1007	/* nothing to schedule: call the idle handler */
983	if (next)	1008	if (!next_sv)
984	break;
985
986	{	1009	{
987	dSP;	1010	dSP;
988		1011
989	ENTER;	1012	ENTER;
990	SAVETMPS;	1013	SAVETMPS;
991		1014
992	PUSHMARK (SP);	1015	PUSHMARK (SP);
993	PUTBACK;	1016	PUTBACK;
994	call_sv (GvSV (coro_idle), G_DISCARD);	1017	call_sv (get_sv ("Coro::idle", FALSE), G_DISCARD);
995		1018
996	FREETMPS;	1019	FREETMPS;
997	LEAVE;	1020	LEAVE;
		1021	continue;
998	}	1022	}
999	}
1000		1023
1001	prev = SvRV (current);	1024	ta->next = SvSTATE (next_sv);
1002	SvRV (current) = next;	1025
		1026	/* cannot transfer to destroyed coros, skip and look for next */
		1027	if (ta->next->flags & CF_DESTROYED)
		1028	{
		1029	SvREFCNT_dec (next_sv);
		1030	continue;
		1031	}
		1032
		1033	break;
		1034	}
1003		1035
1004	/* free this only after the transfer */	1036	/* free this only after the transfer */
		1037	prev_sv = SvRV (coro_current);
		1038	SvRV_set (coro_current, next_sv);
		1039	ta->prev = SvSTATE (prev_sv);
		1040
		1041	assert (ta->next->flags & CF_READY);
		1042	ta->next->flags &= ~CF_READY;
		1043
1005	LOCK;	1044	LOCK;
1006	free_coro_mortal ();	1045	free_coro_mortal ();
		1046	coro_mortal = prev_sv;
1007	UNLOCK;	1047	UNLOCK;
1008	coro_mortal = prev;
1009
1010	ta->prev = SvSTATE (prev);
1011	ta->next = SvSTATE (next);
1012	ta->flags = TRANSFER_SAVE_ALL;
1013	}	1048	}
1014		1049
1015	static void	1050	static void
1016	prepare_cede (struct transfer_args *ta)	1051	prepare_cede (struct transfer_args *ta)
1017	{	1052	{
1018	LOCK;	1053	api_ready (coro_current);
1019	coro_enq (SvREFCNT_inc (SvRV (GvSV (coro_current))));
1020	UNLOCK;
1021
1022	prepare_schedule (ta);	1054	prepare_schedule (ta);
1023	}	1055	}
1024		1056
		1057	static int
		1058	prepare_cede_notself (struct transfer_args *ta)
		1059	{
		1060	if (coro_nready)
		1061	{
		1062	SV *prev = SvRV (coro_current);
		1063	prepare_schedule (ta);
		1064	api_ready (prev);
		1065	return 1;
		1066	}
		1067	else
		1068	return 0;
		1069	}
		1070
1025	static void	1071	static void
1026	api_schedule (void)	1072	api_schedule (void)
1027	{	1073	{
1028	dTHX;
1029	struct transfer_args ta;	1074	struct transfer_args ta;
1030		1075
1031	prepare_schedule (&ta);	1076	prepare_schedule (&ta);
1032	TRANSFER (ta);	1077	TRANSFER (ta);
1033	}	1078	}
1034		1079
1035	static void	1080	static int
1036	api_cede (void)	1081	api_cede (void)
1037	{	1082	{
1038	dTHX;
1039	struct transfer_args ta;	1083	struct transfer_args ta;
1040		1084
1041	prepare_cede (&ta);	1085	prepare_cede (&ta);
		1086
		1087	if (ta.prev != ta.next)
		1088	{
1042	TRANSFER (ta);	1089	TRANSFER (ta);
		1090	return 1;
		1091	}
		1092	else
		1093	return 0;
		1094	}
		1095
		1096	static int
		1097	api_cede_notself (void)
		1098	{
		1099	struct transfer_args ta;
		1100
		1101	if (prepare_cede_notself (&ta))
		1102	{
		1103	TRANSFER (ta);
		1104	return 1;
		1105	}
		1106	else
		1107	return 0;
1043	}	1108	}
1044		1109
1045	MODULE = Coro::State PACKAGE = Coro::State	1110	MODULE = Coro::State PACKAGE = Coro::State
1046		1111
1047	PROTOTYPES: DISABLE	1112	PROTOTYPES: DISABLE
…		…
1053	#endif	1118	#endif
1054	BOOT_PAGESIZE;	1119	BOOT_PAGESIZE;
1055		1120
1056	coro_state_stash = gv_stashpv ("Coro::State", TRUE);	1121	coro_state_stash = gv_stashpv ("Coro::State", TRUE);
1057		1122
1058	newCONSTSUB (coro_state_stash, "SAVE_DEFAV", newSViv (TRANSFER_SAVE_DEFAV));	1123	newCONSTSUB (coro_state_stash, "SAVE_DEFAV", newSViv (CORO_SAVE_DEFAV));
1059	newCONSTSUB (coro_state_stash, "SAVE_DEFSV", newSViv (TRANSFER_SAVE_DEFSV));	1124	newCONSTSUB (coro_state_stash, "SAVE_DEFSV", newSViv (CORO_SAVE_DEFSV));
1060	newCONSTSUB (coro_state_stash, "SAVE_ERRSV", newSViv (TRANSFER_SAVE_ERRSV));	1125	newCONSTSUB (coro_state_stash, "SAVE_ERRSV", newSViv (CORO_SAVE_ERRSV));
		1126	newCONSTSUB (coro_state_stash, "SAVE_IRSSV", newSViv (CORO_SAVE_IRSSV));
		1127	newCONSTSUB (coro_state_stash, "SAVE_ALL", newSViv (CORO_SAVE_ALL));
1061		1128
1062	main_mainstack = PL_mainstack;	1129	main_mainstack = PL_mainstack;
1063		1130
1064	coroapi.ver = CORO_API_VERSION;	1131	coroapi.ver = CORO_API_VERSION;
1065	coroapi.transfer = api_transfer;	1132	coroapi.transfer = api_transfer;
…		…
1075	HV *hv;	1142	HV *hv;
1076	int i;	1143	int i;
1077		1144
1078	Newz (0, coro, 1, struct coro);	1145	Newz (0, coro, 1, struct coro);
1079	coro->args = newAV ();	1146	coro->args = newAV ();
		1147	coro->save = CORO_SAVE_ALL;
		1148	coro->flags = CF_NEW;
1080		1149
1081	hv = newHV ();	1150	hv = newHV ();
1082	sv_magicext ((SV )hv, 0, PERL_MAGIC_ext, &coro_state_vtbl, (char )coro, 0)->mg_flags \|= MGf_DUP;	1151	sv_magicext ((SV )hv, 0, PERL_MAGIC_ext, &coro_state_vtbl, (char )coro, 0)->mg_flags \|= MGf_DUP;
1083	RETVAL = sv_bless (newRV_noinc ((SV *)hv), gv_stashpv (klass, 1));	1152	RETVAL = sv_bless (newRV_noinc ((SV *)hv), gv_stashpv (klass, 1));
1084		1153
1085	for (i = 1; i < items; i++)	1154	for (i = 1; i < items; i++)
1086	av_push (coro->args, newSVsv (ST (i)));	1155	av_push (coro->args, newSVsv (ST (i)));
1087	}	1156	}
1088	OUTPUT:	1157	OUTPUT:
		1158	RETVAL
		1159
		1160	int
		1161	save (SV *coro, int new_save = -1)
		1162	CODE:
		1163	RETVAL = api_save (coro, new_save);
		1164	OUTPUT:
1089	RETVAL	1165	RETVAL
1090		1166
1091	void	1167	void
1092	_set_stacklevel (...)	1168	_set_stacklevel (...)
1093	ALIAS:	1169	ALIAS:
1094	Coro::State::transfer = 1	1170	Coro::State::transfer = 1
1095	Coro::schedule = 2	1171	Coro::schedule = 2
1096	Coro::cede = 3	1172	Coro::cede = 3
1097	Coro::Cont::yield = 4	1173	Coro::cede_notself = 4
1098	CODE:	1174	CODE:
1099	{	1175	{
1100	struct transfer_args ta;	1176	struct transfer_args ta;
1101		1177
1102	switch (ix)	1178	switch (ix)
1103	{	1179	{
1104	case 0:	1180	case 0:
1105	ta.prev = (struct coro )INT2PTR (coro_cctx , SvIV (ST (0)));	1181	ta.prev = (struct coro )INT2PTR (coro_cctx , SvIV (ST (0)));
1106	ta.next = 0;	1182	ta.next = 0;
1107	ta.flags = TRANSFER_SET_STACKLEVEL;
1108	break;	1183	break;
1109		1184
1110	case 1:	1185	case 1:
1111	if (items != 3)	1186	if (items != 2)
1112	croak ("Coro::State::transfer(prev,next,flags) expects three arguments, not %d", items);	1187	croak ("Coro::State::transfer (prev,next) expects two arguments, not %d", items);
1113		1188
1114	prepare_transfer (&ta, ST (0), ST (1), SvIV (ST (2)));	1189	prepare_transfer (&ta, ST (0), ST (1));
1115	break;	1190	break;
1116		1191
1117	case 2:	1192	case 2:
1118	prepare_schedule (&ta);	1193	prepare_schedule (&ta);
1119	break;	1194	break;
…		…
1121	case 3:	1196	case 3:
1122	prepare_cede (&ta);	1197	prepare_cede (&ta);
1123	break;	1198	break;
1124		1199
1125	case 4:	1200	case 4:
1126	{	1201	if (!prepare_cede_notself (&ta))
1127	SV *yieldstack;	1202	XSRETURN_EMPTY;
1128	SV *sv;
1129	AV *defav = GvAV (PL_defgv);
1130		1203
1131	yieldstack = *hv_fetch (
1132	(HV *)SvRV (GvSV (coro_current)),
1133	"yieldstack", sizeof ("yieldstack") - 1,
1134	0
1135	);
1136
1137	/* set up @_ -- ugly */
1138	av_clear (defav);
1139	av_fill (defav, items - 1);
1140	while (items--)
1141	av_store (defav, items, SvREFCNT_inc (ST(items)));
1142
1143	sv = av_pop ((AV *)SvRV (yieldstack));
1144	ta.prev = SvSTATE (av_fetch ((AV )SvRV (sv), 0, 0));
1145	ta.next = SvSTATE (av_fetch ((AV )SvRV (sv), 1, 0));
1146	ta.flags = 0;
1147	SvREFCNT_dec (sv);
1148	}
1149	break;	1204	break;
1150
1151	}	1205	}
1152		1206
		1207	BARRIER;
1153	TRANSFER (ta);	1208	TRANSFER (ta);
1154	}	1209	}
1155		1210
1156	void	1211	bool
1157	_clone_state_from (SV dst, SV src)	1212	_destroy (SV *coro_sv)
1158	CODE:	1213	CODE:
1159	{	1214	RETVAL = coro_state_destroy (SvSTATE (coro_sv));
1160	struct coro *coro_src = SvSTATE (src);	1215	OUTPUT:
1161		1216	RETVAL
1162	sv_unmagic (SvRV (dst), PERL_MAGIC_ext);
1163
1164	++coro_src->refcnt;
1165	sv_magicext (SvRV (dst), 0, PERL_MAGIC_ext, &coro_state_vtbl, (char *)coro_src, 0)->mg_flags \|= MGf_DUP;
1166	}
1167		1217
1168	void	1218	void
1169	_exit (code)	1219	_exit (code)
1170	int code	1220	int code
1171	PROTOTYPE: $	1221	PROTOTYPE: $
…		…
1199	newCONSTSUB (coro_stash, "PRIO_NORMAL", newSViv (PRIO_NORMAL));	1249	newCONSTSUB (coro_stash, "PRIO_NORMAL", newSViv (PRIO_NORMAL));
1200	newCONSTSUB (coro_stash, "PRIO_LOW", newSViv (PRIO_LOW));	1250	newCONSTSUB (coro_stash, "PRIO_LOW", newSViv (PRIO_LOW));
1201	newCONSTSUB (coro_stash, "PRIO_IDLE", newSViv (PRIO_IDLE));	1251	newCONSTSUB (coro_stash, "PRIO_IDLE", newSViv (PRIO_IDLE));
1202	newCONSTSUB (coro_stash, "PRIO_MIN", newSViv (PRIO_MIN));	1252	newCONSTSUB (coro_stash, "PRIO_MIN", newSViv (PRIO_MIN));
1203		1253
1204	coro_current = gv_fetchpv ("Coro::current", TRUE, SVt_PV);	1254	coro_current = get_sv ("Coro::current", FALSE);
1205	coro_idle = gv_fetchpv ("Coro::idle" , TRUE, SVt_PV);	1255	SvREADONLY_on (coro_current);
1206		1256
1207	for (i = PRIO_MAX - PRIO_MIN + 1; i--; )	1257	for (i = PRIO_MAX - PRIO_MIN + 1; i--; )
1208	coro_ready[i] = newAV ();	1258	coro_ready[i] = newAV ();
1209		1259
1210	{	1260	{
1211	SV *sv = perl_get_sv("Coro::API", 1);	1261	SV *sv = perl_get_sv("Coro::API", 1);
1212		1262
1213	coroapi.schedule = api_schedule;	1263	coroapi.schedule = api_schedule;
		1264	coroapi.save = api_save;
1214	coroapi.cede = api_cede;	1265	coroapi.cede = api_cede;
		1266	coroapi.cede_notself = api_cede_notself;
1215	coroapi.ready = api_ready;	1267	coroapi.ready = api_ready;
		1268	coroapi.is_ready = api_is_ready;
1216	coroapi.nready = &coro_nready;	1269	coroapi.nready = &coro_nready;
1217	coroapi.current = coro_current;	1270	coroapi.current = coro_current;
1218		1271
1219	GCoroAPI = &coroapi;	1272	GCoroAPI = &coroapi;
1220	sv_setiv (sv, (IV)&coroapi);	1273	sv_setiv (sv, (IV)&coroapi);
1221	SvREADONLY_on (sv);	1274	SvREADONLY_on (sv);
1222	}	1275	}
1223	}	1276	}
		1277
		1278	void
		1279	_set_current (SV *current)
		1280	PROTOTYPE: $
		1281	CODE:
		1282	SvREFCNT_dec (SvRV (coro_current));
		1283	SvRV_set (coro_current, SvREFCNT_inc (SvRV (current)));
1224		1284
1225	int	1285	int
1226	prio (Coro::State coro, int newprio = 0)	1286	prio (Coro::State coro, int newprio = 0)
1227	ALIAS:	1287	ALIAS:
1228	nice = 1	1288	nice = 1
…		…
1231	RETVAL = coro->prio;	1291	RETVAL = coro->prio;
1232		1292
1233	if (items > 1)	1293	if (items > 1)
1234	{	1294	{
1235	if (ix)	1295	if (ix)
1236	newprio += coro->prio;	1296	newprio = coro->prio - newprio;
1237		1297
1238	if (newprio < PRIO_MIN) newprio = PRIO_MIN;	1298	if (newprio < PRIO_MIN) newprio = PRIO_MIN;
1239	if (newprio > PRIO_MAX) newprio = PRIO_MAX;	1299	if (newprio > PRIO_MAX) newprio = PRIO_MAX;
1240		1300
1241	coro->prio = newprio;	1301	coro->prio = newprio;
1242	}	1302	}
1243	}	1303	}
		1304	OUTPUT:
		1305	RETVAL
1244		1306
1245	void	1307	SV *
1246	ready (SV *self)	1308	ready (SV *self)
1247	PROTOTYPE: $	1309	PROTOTYPE: $
1248	CODE:	1310	CODE:
1249	api_ready (self);	1311	RETVAL = boolSV (api_ready (self));
		1312	OUTPUT:
		1313	RETVAL
		1314
		1315	SV *
		1316	is_ready (SV *self)
		1317	PROTOTYPE: $
		1318	CODE:
		1319	RETVAL = boolSV (api_is_ready (self));
		1320	OUTPUT:
		1321	RETVAL
1250		1322
1251	int	1323	int
1252	nready (...)	1324	nready (...)
1253	PROTOTYPE:	1325	PROTOTYPE:
1254	CODE:	1326	CODE:
…		…
1260		1332
1261	SV *	1333	SV *
1262	_get_state ()	1334	_get_state ()
1263	CODE:	1335	CODE:
1264	{	1336	{
1265	struct {	1337	struct io_state *data;
1266	int errorno;
1267	int laststype;
1268	int laststatval;
1269	Stat_t statcache;
1270	} data;
1271		1338
		1339	RETVAL = newSV (sizeof (struct io_state));
		1340	data = (struct io_state *)SvPVX (RETVAL);
		1341	SvCUR_set (RETVAL, sizeof (struct io_state));
		1342	SvPOK_only (RETVAL);
		1343
1272	data.errorno = errno;	1344	data->errorno = errno;
1273	data.laststype = PL_laststype;	1345	data->laststype = PL_laststype;
1274	data.laststatval = PL_laststatval;	1346	data->laststatval = PL_laststatval;
1275	data.statcache = PL_statcache;	1347	data->statcache = PL_statcache;
1276
1277	RETVAL = newSVpvn ((char *)&data, sizeof data);
1278	}	1348	}
1279	OUTPUT:	1349	OUTPUT:
1280	RETVAL	1350	RETVAL
1281		1351
1282	void	1352	void
1283	_set_state (char *data_)	1353	_set_state (char *data_)
1284	PROTOTYPE: $	1354	PROTOTYPE: $
1285	CODE:	1355	CODE:
1286	{	1356	{
1287	struct {	1357	struct io_state data = (void )data_;
1288	int errorno;
1289	int laststype;
1290	int laststatval;
1291	Stat_t statcache;
1292	} data = (void )data_;
1293		1358
1294	errno = data->errorno;	1359	errno = data->errorno;
1295	PL_laststype = data->laststype;	1360	PL_laststype = data->laststype;
1296	PL_laststatval = data->laststatval;	1361	PL_laststatval = data->laststatval;
1297	PL_statcache = data->statcache;	1362	PL_statcache = data->statcache;
1298	}	1363	}
		1364

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Comparing Coro/Coro/State.xs (file contents): Revision 1.107 by root, Mon Nov 27 02:15:51 2006 UTC vs. Revision 1.134 by root, Thu Jan 4 23:49:27 2007 UTC

Diff Legend

Comparing Coro/Coro/State.xs (file contents):
Revision 1.107 by root, Mon Nov 27 02:15:51 2006 UTC vs.
Revision 1.134 by root, Thu Jan 4 23:49:27 2007 UTC