[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 1.136 by root, Fri Jan 12 01:05:55 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	/* helper storage struct for Coro::AIO */
		118	struct io_state
		119	{
		120	int errorno;
		121	I32 laststype;
		122	int laststatval;
		123	Stat_t statcache;
		124	};
		125
103	static struct CoroAPI coroapi;	126	static struct CoroAPI coroapi;
104	static AV main_mainstack; / used to differentiate between $main and others */	127	static AV main_mainstack; / used to differentiate between $main and others */
105	static HV coro_state_stash, coro_stash;	128	static HV coro_state_stash, coro_stash;
106	static SV coro_mortal; / will be freed after next transfer */	129	static SV coro_mortal; / will be freed after next transfer */
107		130
…		…
115	/* the stack */	138	/* the stack */
116	void *sptr;	139	void *sptr;
117	long ssize; /* positive == mmap, otherwise malloc */	140	long ssize; /* positive == mmap, otherwise malloc */
118		141
119	/* cpu state */	142	/* cpu state */
120	void idle_sp; / sp of top-level transfer/schedule/cede call */	143	void idle_sp; / sp of top-level transfer/schedule/cede call */
		144	JMPENV idle_te; / same as idle_sp, but for top_env, TODO: remove once stable */
121	JMPENV *top_env;	145	JMPENV *top_env;
122	coro_context cctx;	146	coro_context cctx;
123		147
		148	int inuse;
		149
124	#if USE_VALGRIND	150	#if USE_VALGRIND
125	int valgrind_id;	151	int valgrind_id;
126	#endif	152	#endif
127	} coro_cctx;	153	} coro_cctx;
		154
		155	enum {
		156	CF_RUNNING = 0x0001, /* coroutine is running */
		157	CF_READY = 0x0002, /* coroutine is ready */
		158	CF_NEW = 0x0004, /* has never been switched to */
		159	CF_DESTROYED = 0x0008, /* coroutine data has been freed */
		160	};
128		161
129	/* this is a structure representing a perl-level coroutine */	162	/* this is a structure representing a perl-level coroutine */
130	struct coro {	163	struct coro {
131	/* the c coroutine allocated to this perl coroutine, if any */	164	/* the c coroutine allocated to this perl coroutine, if any */
132	coro_cctx *cctx;	165	coro_cctx *cctx;
133		166
134	/* data associated with this coroutine (initial args) */	167	/* data associated with this coroutine (initial args) */
135	AV *args;	168	AV *args;
136	int refcnt;	169	int refcnt;
		170	int save; /* CORO_SAVE flags */
		171	int flags; /* CF_ flags */
137		172
138	/* optionally saved, might be zero */	173	/* optionally saved, might be zero */
139	AV *defav;	174	AV defav; / @_ */
140	SV *defsv;	175	SV defsv; / $_ */
141	SV *errsv;	176	SV errsv; / $@ */
		177	SV irssv; / $/ */
		178	SV irssv_sv; / real $/ cache */
142		179
143	/* saved global state not related to stacks */	180	#define VAR(name,type) type name;
144	U8 dowarn;	181	# include "state.h"
145	I32 in_eval;	182	#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		183
177	/* coro process data */	184	/* coro process data */
178	int prio;	185	int prio;
179	};	186	};
180		187
…		…
244		251
245	#define PERL_MAGIC_coro PERL_MAGIC_ext	252	#define PERL_MAGIC_coro PERL_MAGIC_ext
246		253
247	static MGVTBL vtbl_coro = {0, 0, 0, 0, coro_cv_free};	254	static MGVTBL vtbl_coro = {0, 0, 0, 0, coro_cv_free};
248		255
		256	#define CORO_MAGIC(cv) \
		257	SvMAGIC (cv) \
		258	? SvMAGIC (cv)->mg_type == PERL_MAGIC_coro \
		259	? SvMAGIC (cv) \
		260	: mg_find ((SV *)cv, PERL_MAGIC_coro) \
		261	: 0
		262
249	/* the next two functions merely cache the padlists */	263	/* the next two functions merely cache the padlists */
250	static void	264	static void
251	get_padlist (CV *cv)	265	get_padlist (CV *cv)
252	{	266	{
253	MAGIC mg = mg_find ((SV )cv, PERL_MAGIC_coro);	267	MAGIC *mg = CORO_MAGIC (cv);
		268	AV *av;
254		269
255	if (mg && AvFILLp ((AV *)mg->mg_obj) >= 0)	270	if (mg && AvFILLp ((av = (AV *)mg->mg_obj)) >= 0)
256	CvPADLIST (cv) = (AV )av_pop ((AV )mg->mg_obj);	271	CvPADLIST (cv) = (AV *)AvARRAY (av)[AvFILLp (av)--];
257	else	272	else
258	{	273	{
259	#if 0	274	#if PREFER_PERL_FUNCTIONS
260	/* this is probably cleaner, but also slower? */	275	/* this is probably cleaner, but also slower? */
261	CV *cp = Perl_cv_clone (cv);	276	CV *cp = Perl_cv_clone (cv);
262	CvPADLIST (cv) = CvPADLIST (cp);	277	CvPADLIST (cv) = CvPADLIST (cp);
263	CvPADLIST (cp) = 0;	278	CvPADLIST (cp) = 0;
264	SvREFCNT_dec (cp);	279	SvREFCNT_dec (cp);
…		…
269	}	284	}
270		285
271	static void	286	static void
272	put_padlist (CV *cv)	287	put_padlist (CV *cv)
273	{	288	{
274	MAGIC mg = mg_find ((SV )cv, PERL_MAGIC_coro);	289	MAGIC *mg = CORO_MAGIC (cv);
		290	AV *av;
275		291
276	if (!mg)	292	if (!mg)
277	{	293	{
278	sv_magic ((SV *)cv, 0, PERL_MAGIC_coro, 0, 0);	294	sv_magic ((SV *)cv, 0, PERL_MAGIC_coro, 0, 0);
279	mg = mg_find ((SV *)cv, PERL_MAGIC_coro);	295	mg = mg_find ((SV *)cv, PERL_MAGIC_coro);
280	mg->mg_virtual = &vtbl_coro;	296	mg->mg_virtual = &vtbl_coro;
281	mg->mg_obj = (SV *)newAV ();	297	mg->mg_obj = (SV *)newAV ();
282	}	298	}
283		299
284	av_push ((AV )mg->mg_obj, (SV )CvPADLIST (cv));	300	av = (AV *)mg->mg_obj;
		301
		302	if (AvFILLp (av) >= AvMAX (av))
		303	av_extend (av, AvMAX (av) + 1);
		304
		305	AvARRAY (av)[++AvFILLp (av)] = (SV *)CvPADLIST (cv);
285	}	306	}
286		307
287	#define SB do {	308	#define SB do {
288	#define SE } while (0)	309	#define SE } while (0)
289		310
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	311	#define REPLACE_SV(sv,val) SB SvREFCNT_dec (sv); (sv) = (val); (val) = 0; SE
294		312
295	static void	313	static void
296	load_state(Coro__State c)	314	load_perl (Coro__State c)
297	{	315	{
298	PL_dowarn = c->dowarn;	316	#define VAR(name,type) PL_ ## name = c->name;
299	PL_in_eval = c->in_eval;	317	# include "state.h"
300		318	#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		319
332	if (c->defav) REPLACE_SV (GvAV (PL_defgv), c->defav);	320	if (c->defav) REPLACE_SV (GvAV (PL_defgv), c->defav);
333	if (c->defsv) REPLACE_SV (DEFSV , c->defsv);	321	if (c->defsv) REPLACE_SV (DEFSV , c->defsv);
334	if (c->errsv) REPLACE_SV (ERRSV , c->errsv);	322	if (c->errsv) REPLACE_SV (ERRSV , c->errsv);
		323	if (c->irssv)
		324	{
		325	if (c->irssv == PL_rs \|\| sv_eq (PL_rs, c->irssv))
		326	SvREFCNT_dec (c->irssv);
		327	else
		328	{
		329	REPLACE_SV (PL_rs, c->irssv);
		330	if (!c->irssv_sv) c->irssv_sv = get_sv ("/", 0);
		331	sv_setsv (c->irssv_sv, PL_rs);
		332	}
		333	}
335		334
336	{	335	{
337	dSP;	336	dSP;
338	CV *cv;	337	CV *cv;
339		338
340	/* now do the ugly restore mess */	339	/* now do the ugly restore mess */
341	while ((cv = (CV *)POPs))	340	while ((cv = (CV *)POPs))
342	{	341	{
343	AV padlist = (AV )POPs;
344
345	if (padlist)
346	{
347	put_padlist (cv); /* mark this padlist as available */	342	put_padlist (cv); /* mark this padlist as available */
348	CvPADLIST(cv) = padlist;	343	CvDEPTH (cv) = PTR2IV (POPs);
349	}	344	CvPADLIST (cv) = (AV *)POPs;
350
351	++CvDEPTH(cv);
352	}	345	}
353		346
354	PUTBACK;	347	PUTBACK;
355	}	348	}
356	}	349	}
357		350
358	static void	351	static void
359	save_state(Coro__State c, int flags)	352	save_perl (Coro__State c)
360	{	353	{
361	{	354	{
362	dSP;	355	dSP;
363	I32 cxix = cxstack_ix;	356	I32 cxix = cxstack_ix;
364	PERL_CONTEXT *ccstk = cxstack;	357	PERL_CONTEXT *ccstk = cxstack;
…		…
367	/*	360	/*
368	* the worst thing you can imagine happens first - we have to save	361	* the worst thing you can imagine happens first - we have to save
369	* (and reinitialize) all cv's in the whole callchain :(	362	* (and reinitialize) all cv's in the whole callchain :(
370	*/	363	*/
371		364
		365	EXTEND (SP, 3 + 1);
372	PUSHs (Nullsv);	366	PUSHs (Nullsv);
373	/* this loop was inspired by pp_caller */	367	/* this loop was inspired by pp_caller */
374	for (;;)	368	for (;;)
375	{	369	{
376	while (cxix >= 0)	370	while (cxix >= 0)
377	{	371	{
378	PERL_CONTEXT *cx = &ccstk[cxix--];	372	PERL_CONTEXT *cx = &ccstk[cxix--];
379		373
380	if (CxTYPE(cx) == CXt_SUB)	374	if (CxTYPE (cx) == CXt_SUB)
381	{	375	{
382	CV *cv = cx->blk_sub.cv;	376	CV *cv = cx->blk_sub.cv;
		377
383	if (CvDEPTH(cv))	378	if (CvDEPTH (cv))
384	{	379	{
385	EXTEND (SP, CvDEPTH(cv)*2);	380	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));	381	PUSHs ((SV *)CvPADLIST (cv));
		382	PUSHs (INT2PTR (SV *, CvDEPTH (cv)));
395	PUSHs ((SV *)cv);	383	PUSHs ((SV *)cv);
396		384
		385	CvDEPTH (cv) = 0;
397	get_padlist (cv);	386	get_padlist (cv);
398	}	387	}
399	}	388	}
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	}	389	}
409		390
410	if (top_si->si_type == PERLSI_MAIN)	391	if (top_si->si_type == PERLSI_MAIN)
411	break;	392	break;
412		393
…		…
416	}	397	}
417		398
418	PUTBACK;	399	PUTBACK;
419	}	400	}
420		401
421	c->defav = flags & TRANSFER_SAVE_DEFAV ? (AV *)SvREFCNT_inc (GvAV (PL_defgv)) : 0;	402	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;	403	c->defsv = c->save & CORO_SAVE_DEFSV ? SvREFCNT_inc (DEFSV) : 0;
423	c->errsv = flags & TRANSFER_SAVE_ERRSV ? SvREFCNT_inc (ERRSV) : 0;	404	c->errsv = c->save & CORO_SAVE_ERRSV ? SvREFCNT_inc (ERRSV) : 0;
		405	c->irssv = c->save & CORO_SAVE_IRSSV ? SvREFCNT_inc (PL_rs) : 0;
424		406
425	c->dowarn = PL_dowarn;	407	#define VAR(name,type)c->name = PL_ ## name;
426	c->in_eval = PL_in_eval;	408	# include "state.h"
427		409	#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	}	410	}
459		411
460	/*	412	/*
461	* allocate various perl stacks. This is an exact copy	413	* allocate various perl stacks. This is an exact copy
462	* of perl.c:init_stacks, except that it uses less memory	414	* of perl.c:init_stacks, except that it uses less memory
463	* on the (sometimes correct) assumption that coroutines do	415	* on the (sometimes correct) assumption that coroutines do
464	* not usually need a lot of stackspace.	416	* not usually need a lot of stackspace.
465	*/	417	*/
		418	#if PREFER_PERL_FUNCTIONS
		419	# define coro_init_stacks init_stacks
		420	#else
466	static void	421	static void
467	coro_init_stacks ()	422	coro_init_stacks ()
468	{	423	{
469	PL_curstackinfo = new_stackinfo(96, 1024/sizeof(PERL_CONTEXT) - 1);	424	PL_curstackinfo = new_stackinfo(128, 1024/sizeof(PERL_CONTEXT));
470	PL_curstackinfo->si_type = PERLSI_MAIN;	425	PL_curstackinfo->si_type = PERLSI_MAIN;
471	PL_curstack = PL_curstackinfo->si_stack;	426	PL_curstack = PL_curstackinfo->si_stack;
472	PL_mainstack = PL_curstack; /* remember in case we switch stacks */	427	PL_mainstack = PL_curstack; /* remember in case we switch stacks */
473		428
474	PL_stack_base = AvARRAY(PL_curstack);	429	PL_stack_base = AvARRAY(PL_curstack);
475	PL_stack_sp = PL_stack_base;	430	PL_stack_sp = PL_stack_base;
476	PL_stack_max = PL_stack_base + AvMAX(PL_curstack);	431	PL_stack_max = PL_stack_base + AvMAX(PL_curstack);
477		432
478	New(50,PL_tmps_stack,96,SV*);	433	New(50,PL_tmps_stack,128,SV*);
479	PL_tmps_floor = -1;	434	PL_tmps_floor = -1;
480	PL_tmps_ix = -1;	435	PL_tmps_ix = -1;
481	PL_tmps_max = 96;	436	PL_tmps_max = 128;
482		437
483	New(54,PL_markstack,16,I32);	438	New(54,PL_markstack,32,I32);
484	PL_markstack_ptr = PL_markstack;	439	PL_markstack_ptr = PL_markstack;
485	PL_markstack_max = PL_markstack + 16;	440	PL_markstack_max = PL_markstack + 32;
486		441
487	#ifdef SET_MARK_OFFSET	442	#ifdef SET_MARK_OFFSET
488	SET_MARK_OFFSET;	443	SET_MARK_OFFSET;
489	#endif	444	#endif
490		445
491	New(54,PL_scopestack,16,I32);	446	New(54,PL_scopestack,32,I32);
492	PL_scopestack_ix = 0;	447	PL_scopestack_ix = 0;
493	PL_scopestack_max = 16;	448	PL_scopestack_max = 32;
494		449
495	New(54,PL_savestack,96,ANY);	450	New(54,PL_savestack,64,ANY);
496	PL_savestack_ix = 0;	451	PL_savestack_ix = 0;
497	PL_savestack_max = 96;	452	PL_savestack_max = 64;
498		453
499	#if !PERL_VERSION_ATLEAST (5,9,0)	454	#if !PERL_VERSION_ATLEAST (5,9,0)
500	New(54,PL_retstack,8,OP*);	455	New(54,PL_retstack,16,OP*);
501	PL_retstack_ix = 0;	456	PL_retstack_ix = 0;
502	PL_retstack_max = 8;	457	PL_retstack_max = 16;
503	#endif	458	#endif
504	}	459	}
		460	#endif
505		461
506	/*	462	/*
507	* destroy the stacks, the callchain etc...	463	* destroy the stacks, the callchain etc...
508	*/	464	*/
509	static void	465	static void
510	coro_destroy_stacks ()	466	coro_destroy_stacks ()
511	{	467	{
512	if (!IN_DESTRUCT)	468	if (!IN_DESTRUCT)
513	{	469	{
514	/* is this ugly, I ask? */	470	/* restore all saved variables and stuff */
515	LEAVE_SCOPE (0);	471	LEAVE_SCOPE (0);
		472	assert (PL_tmps_floor == -1);
516		473
517	/* sure it is, but more important: is it correct?? :/ */	474	/* free all temporaries */
518	FREETMPS;	475	FREETMPS;
		476	assert (PL_tmps_ix == -1);
519		477
		478	/* unwind all extra stacks */
520	/POPSTACK_TO (PL_mainstack);//D//use/	479	POPSTACK_TO (PL_mainstack);
		480
		481	/* unwind main stack */
		482	dounwind (-1);
521	}	483	}
522		484
523	while (PL_curstackinfo->si_next)	485	while (PL_curstackinfo->si_next)
524	PL_curstackinfo = PL_curstackinfo->si_next;	486	PL_curstackinfo = PL_curstackinfo->si_next;
525		487
526	while (PL_curstackinfo)	488	while (PL_curstackinfo)
527	{	489	{
528	PERL_SI *p = PL_curstackinfo->si_prev;	490	PERL_SI *p = PL_curstackinfo->si_prev;
529		491
530	{ /D//remove/
531	dSP;
532	SWITCHSTACK (PL_curstack, PL_curstackinfo->si_stack);
533	PUTBACK; /* possibly superfluous */
534	}
535
536	if (!IN_DESTRUCT)	492	if (!IN_DESTRUCT)
537	{
538	dounwind (-1);/D//remove/
539	SvREFCNT_dec (PL_curstackinfo->si_stack);	493	SvREFCNT_dec (PL_curstackinfo->si_stack);
540	}
541		494
542	Safefree (PL_curstackinfo->si_cxstack);	495	Safefree (PL_curstackinfo->si_cxstack);
543	Safefree (PL_curstackinfo);	496	Safefree (PL_curstackinfo);
544	PL_curstackinfo = p;	497	PL_curstackinfo = p;
545	}	498	}
…		…
560	* emulate part of the perl startup here.	513	* emulate part of the perl startup here.
561	*/	514	*/
562		515
563	coro_init_stacks ();	516	coro_init_stacks ();
564		517
565	PL_curcop = 0;	518	PL_curcop = &PL_compiling;
566	PL_in_eval = 0;	519	PL_in_eval = EVAL_NULL;
567	PL_curpm = 0;	520	PL_curpm = 0;
		521	PL_localizing = 0;
		522	PL_dirty = 0;
		523	PL_restartop = 0;
568		524
569	{	525	{
570	dSP;	526	dSP;
571	LOGOP myop;	527	LOGOP myop;
572		528
573	/* I have no idea why this is needed, but it is */
574	PUSHMARK (SP);
575
576	SvREFCNT_dec (GvAV (PL_defgv));	529	SvREFCNT_dec (GvAV (PL_defgv));
577	GvAV (PL_defgv) = coro->args; coro->args = 0;	530	GvAV (PL_defgv) = coro->args; coro->args = 0;
578		531
579	Zero (&myop, 1, LOGOP);	532	Zero (&myop, 1, LOGOP);
580	myop.op_next = Nullop;	533	myop.op_next = Nullop;
581	myop.op_flags = OPf_WANT_VOID;	534	myop.op_flags = OPf_WANT_VOID;
582		535
583	PL_op = (OP *)&myop;
584
585	PUSHMARK (SP);	536	PUSHMARK (SP);
586	XPUSHs ((SV *)get_cv ("Coro::State::_coro_init", FALSE));	537	XPUSHs ((SV *)get_cv ("Coro::State::_coro_init", FALSE));
587	PUTBACK;	538	PUTBACK;
		539	PL_op = (OP *)&myop;
588	PL_op = PL_ppaddr[OP_ENTERSUB](aTHX);	540	PL_op = PL_ppaddr[OP_ENTERSUB](aTHX);
589	SPAGAIN;	541	SPAGAIN;
590
591	ENTER; /* necessary e.g. for dounwind */
592	}	542	}
		543
		544	ENTER; /* necessary e.g. for dounwind */
593	}	545	}
594		546
595	static void	547	static void
596	free_coro_mortal ()	548	free_coro_mortal ()
597	{	549	{
…		…
600	SvREFCNT_dec (coro_mortal);	552	SvREFCNT_dec (coro_mortal);
601	coro_mortal = 0;	553	coro_mortal = 0;
602	}	554	}
603	}	555	}
604		556
		557	/* inject a fake call to Coro::State::_cctx_init into the execution */
605	static void NOINLINE	558	static void NOINLINE
606	prepare_cctx (coro_cctx *cctx)	559	prepare_cctx (coro_cctx *cctx)
607	{	560	{
608	dSP;	561	dSP;
609	LOGOP myop;	562	LOGOP myop;
610		563
611	Zero (&myop, 1, LOGOP);	564	Zero (&myop, 1, LOGOP);
612	myop.op_next = PL_op;	565	myop.op_next = PL_op;
613	myop.op_flags = OPf_WANT_VOID;	566	myop.op_flags = OPf_WANT_VOID \| OPf_STACKED;
614
615	sv_setiv (get_sv ("Coro::State::_cctx", FALSE), PTR2IV (cctx));
616		567
617	PUSHMARK (SP);	568	PUSHMARK (SP);
		569	EXTEND (SP, 2);
		570	PUSHs (sv_2mortal (newSViv (PTR2IV (cctx))));
618	XPUSHs ((SV *)get_cv ("Coro::State::_cctx_init", FALSE));	571	PUSHs ((SV *)get_cv ("Coro::State::_cctx_init", FALSE));
619	PUTBACK;	572	PUTBACK;
		573	PL_op = (OP *)&myop;
620	PL_restartop = PL_ppaddr[OP_ENTERSUB](aTHX);	574	PL_op = PL_ppaddr[OP_ENTERSUB](aTHX);
621	SPAGAIN;	575	SPAGAIN;
622	}	576	}
623		577
624	static void	578	static void
625	coro_run (void *arg)	579	coro_run (void *arg)
626	{	580	{
627	/* coro_run is the alternative epilogue of transfer() */	581	/* coro_run is the alternative tail of transfer(), so unlock here. */
628	UNLOCK;	582	UNLOCK;
629		583
630	/*	584	/*
631	* this is a _very_ stripped down perl interpreter ;)	585	* this is a _very_ stripped down perl interpreter ;)
632	*/	586	*/
…		…
634		588
635	/* inject call to cctx_init */	589	/* inject call to cctx_init */
636	prepare_cctx ((coro_cctx *)arg);	590	prepare_cctx ((coro_cctx *)arg);
637		591
638	/* somebody will hit me for both perl_run and PL_restartop */	592	/* somebody will hit me for both perl_run and PL_restartop */
		593	PL_restartop = PL_op;
639	perl_run (PL_curinterp);	594	perl_run (PL_curinterp);
640		595
641	fputs ("FATAL: C coroutine fell over the edge of the world, aborting. Did you call exit in a coroutine?\n", stderr);	596	fputs ("FATAL: C coroutine fell over the edge of the world, aborting. Did you call exit in a coroutine?\n", stderr);
642	abort ();	597	abort ();
643	}	598	}
…		…
647	{	602	{
648	coro_cctx *cctx;	603	coro_cctx *cctx;
649		604
650	++cctx_count;	605	++cctx_count;
651		606
652	New (0, cctx, 1, coro_cctx);	607	Newz (0, cctx, 1, coro_cctx);
653		608
654	#if HAVE_MMAP	609	#if HAVE_MMAP
655		610
656	cctx->ssize = ((STACKSIZE * sizeof (long) + PAGESIZE - 1) / PAGESIZE + STACKGUARD) * PAGESIZE;	611	cctx->ssize = ((STACKSIZE * sizeof (long) + PAGESIZE - 1) / PAGESIZE + STACKGUARD) * PAGESIZE;
657	/* mmap suppsedly does allocate-on-write for us */	612	/* 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);	613	cctx->sptr = mmap (0, cctx->ssize, PROT_EXEC\|PROT_READ\|PROT_WRITE, MAP_PRIVATE\|MAP_ANONYMOUS, 0, 0);
659		614
660	if (cctx->sptr == (void *)-1)	615	if (cctx->sptr == (void *)-1)
661	{	616	{
662	perror ("FATAL: unable to mmap stack for coroutine");	617	perror ("FATAL: unable to mmap stack for coroutine");
…		…
691		646
692	return cctx;	647	return cctx;
693	}	648	}
694		649
695	static void	650	static void
696	cctx_free (coro_cctx *cctx)	651	cctx_destroy (coro_cctx *cctx)
697	{	652	{
698	if (!cctx)	653	if (!cctx)
699	return;	654	return;
700		655
701	--cctx_count;	656	--cctx_count;
…		…
718	{	673	{
719	coro_cctx *cctx;	674	coro_cctx *cctx;
720		675
721	if (cctx_first)	676	if (cctx_first)
722	{	677	{
723	--cctx_idle;
724	cctx = cctx_first;	678	cctx = cctx_first;
725	cctx_first = cctx->next;	679	cctx_first = cctx->next;
		680	--cctx_idle;
726	}	681	}
727	else	682	else
728	{	683	{
729	cctx = cctx_new ();	684	cctx = cctx_new ();
730	PL_op = PL_op->op_next;	685	PL_op = PL_op->op_next;
…		…
734	}	689	}
735		690
736	static void	691	static void
737	cctx_put (coro_cctx *cctx)	692	cctx_put (coro_cctx *cctx)
738	{	693	{
		694	/* free another cctx if overlimit */
		695	if (cctx_idle >= MAX_IDLE_CCTX)
		696	{
		697	coro_cctx *first = cctx_first;
		698	cctx_first = first->next;
		699	--cctx_idle;
		700
		701	assert (!first->inuse);
		702	cctx_destroy (first);
		703	}
		704
739	++cctx_idle;	705	++cctx_idle;
740	cctx->next = cctx_first;	706	cctx->next = cctx_first;
741	cctx_first = cctx;	707	cctx_first = cctx;
742	}	708	}
743		709
744	/* never call directly, always through the coro_state_transfer global variable */	710	/* never call directly, always through the coro_state_transfer global variable */
745	static void NOINLINE	711	static void NOINLINE
746	transfer (struct coro prev, struct coro next, int flags)	712	transfer (struct coro prev, struct coro next)
747	{	713	{
748	dSTACKLEVEL;	714	dSTACKLEVEL;
749		715
750	/* sometimes transfer is only called to set idle_sp */	716	/* sometimes transfer is only called to set idle_sp */
751	if (flags == TRANSFER_SET_STACKLEVEL)	717	if (!next)
		718	{
752	((coro_cctx *)prev)->idle_sp = STACKLEVEL;	719	((coro_cctx *)prev)->idle_sp = STACKLEVEL;
		720	assert (((coro_cctx )prev)->idle_te = PL_top_env); / just for the side-effect when asserts are enabled */
		721	}
753	else if (prev != next)	722	else if (prev != next)
754	{	723	{
755	coro_cctx *prev__cctx;	724	coro_cctx *prev__cctx;
756		725
		726	if (prev->flags & CF_NEW)
		727	{
		728	/* create a new empty context */
		729	Newz (0, prev->cctx, 1, coro_cctx);
		730	prev->cctx->inuse = 1;
		731	prev->flags &= ~CF_NEW;
		732	prev->flags \|= CF_RUNNING;
		733	}
		734
		735	/TODO: must not croak here /
		736	if (!prev->flags & CF_RUNNING)
		737	croak ("Coro::State::transfer called with non-running prev Coro::State, but can only transfer from running states");
		738
		739	if (next->flags & CF_RUNNING)
		740	croak ("Coro::State::transfer called with running next Coro::State, but can only transfer to inactive states");
		741
		742	if (next->flags & CF_DESTROYED)
		743	croak ("Coro::State::transfer called with destroyed next Coro::State, but can only transfer to inactive states");
		744
		745	prev->flags &= ~CF_RUNNING;
		746	next->flags \|= CF_RUNNING;
		747
757	LOCK;	748	LOCK;
758		749
759	if (next->mainstack)	750	if (next->flags & CF_NEW)
760	{	751	{
761	/* coroutine already started */	752	/* need to start coroutine */
762	SAVE (prev, flags);	753	next->flags &= ~CF_NEW;
763	LOAD (next);	754	/* first get rid of the old state */
		755	save_perl (prev);
		756	/* setup coroutine call */
		757	setup_coro (next);
		758	/* need a new stack */
		759	assert (!next->cctx);
764	}	760	}
765	else	761	else
766	{	762	{
767	/* need to start coroutine */	763	/* coroutine already started */
768	/* first get rid of the old state */	764	save_perl (prev);
769	SAVE (prev, -1);	765	load_perl (next);
770	/* setup coroutine call */
771	setup_coro (next);
772	/* need a stack */
773	next->cctx = 0;
774	}	766	}
775
776	if (!prev->cctx)
777	/* create a new empty context */
778	Newz (0, prev->cctx, 1, coro_cctx);
779		767
780	prev__cctx = prev->cctx;	768	prev__cctx = prev->cctx;
781		769
782	/* possibly "free" the cctx */	770	/* possibly "free" the cctx */
783	if (prev__cctx->idle_sp == STACKLEVEL)	771	if (prev__cctx->idle_sp == STACKLEVEL)
784	{	772	{
		773	/* I assume that STACKLEVEL is a stronger indicator than PL_top_env changes */
		774	assert (("ERROR: current top_env must equal previous top_env", PL_top_env == prev__cctx->idle_te));
		775
		776	prev->cctx = 0;
		777
785	cctx_put (prev__cctx);	778	cctx_put (prev__cctx);
786	prev->cctx = 0;	779	prev__cctx->inuse = 0;
787	}	780	}
788		781
789	if (!next->cctx)	782	if (!next->cctx)
		783	{
790	next->cctx = cctx_get ();	784	next->cctx = cctx_get ();
		785	assert (!next->cctx->inuse);
		786	next->cctx->inuse = 1;
		787	}
791		788
792	if (prev__cctx != next->cctx)	789	if (prev__cctx != next->cctx)
793	{	790	{
794	prev__cctx->top_env = PL_top_env;	791	prev__cctx->top_env = PL_top_env;
795	PL_top_env = next->cctx->top_env;	792	PL_top_env = next->cctx->top_env;
796	coro_transfer (&prev__cctx->cctx, &next->cctx->cctx);	793	coro_transfer (&prev__cctx->cctx, &next->cctx->cctx);
797	}	794	}
798		795
799	free_coro_mortal ();	796	free_coro_mortal ();
800
801	UNLOCK;	797	UNLOCK;
802	}	798	}
803	}	799	}
804		800
805	struct transfer_args	801	struct transfer_args
806	{	802	{
807	struct coro prev, next;	803	struct coro prev, next;
808	int flags;
809	};	804	};
810		805
811	#define TRANSFER(ta) transfer ((ta).prev, (ta).next, (ta).flags)	806	#define TRANSFER(ta) transfer ((ta).prev, (ta).next)
812		807
813	static void	808	static int
814	coro_state_destroy (struct coro *coro)	809	coro_state_destroy (struct coro *coro)
815	{	810	{
816	if (coro->refcnt--)	811	if (coro->flags & CF_DESTROYED)
817	return;	812	return 0;
		813
		814	coro->flags \|= CF_DESTROYED;
818		815
819	if (coro->mainstack && coro->mainstack != main_mainstack)	816	if (coro->mainstack && coro->mainstack != main_mainstack)
820	{	817	{
		818	assert (!(coro->flags & CF_RUNNING));
		819
821	struct coro temp;	820	struct coro temp;
		821	Zero (&temp, 1, struct coro);
		822	temp.save = CORO_SAVE_ALL;
822		823
823	SAVE ((&temp), TRANSFER_SAVE_ALL);	824	if (coro->flags & CF_RUNNING)
824	LOAD (coro);	825	croak ("FATAL: tried to destroy currently running coroutine");
		826
		827	save_perl (&temp);
		828	load_perl (coro);
825		829
826	coro_destroy_stacks ();	830	coro_destroy_stacks ();
827		831
828	LOAD ((&temp)); /* this will get rid of defsv etc.. */	832	load_perl (&temp); /* this will get rid of defsv etc.. */
829		833
830	coro->mainstack = 0;	834	coro->mainstack = 0;
831	}	835	}
832		836
833	cctx_free (coro->cctx);	837	cctx_destroy (coro->cctx);
834	SvREFCNT_dec (coro->args);	838	SvREFCNT_dec (coro->args);
835	Safefree (coro);	839
		840	return 1;
836	}	841	}
837		842
838	static int	843	static int
839	coro_state_clear (pTHX_ SV sv, MAGIC mg)	844	coro_state_free (pTHX_ SV sv, MAGIC mg)
840	{	845	{
841	struct coro coro = (struct coro )mg->mg_ptr;	846	struct coro coro = (struct coro )mg->mg_ptr;
842	mg->mg_ptr = 0;	847	mg->mg_ptr = 0;
843		848
		849	if (--coro->refcnt < 0)
		850	{
844	coro_state_destroy (coro);	851	coro_state_destroy (coro);
		852	Safefree (coro);
		853	}
845		854
846	return 0;	855	return 0;
847	}	856	}
848		857
849	static int	858	static int
…		…
856	return 0;	865	return 0;
857	}	866	}
858		867
859	static MGVTBL coro_state_vtbl = {	868	static MGVTBL coro_state_vtbl = {
860	0, 0, 0, 0,	869	0, 0, 0, 0,
861	coro_state_clear,	870	coro_state_free,
862	0,	871	0,
863	#ifdef MGf_DUP	872	#ifdef MGf_DUP
864	coro_state_dup,	873	coro_state_dup,
865	#else	874	#else
866	# define MGf_DUP 0	875	# define MGf_DUP 0
…		…
888	assert (mg->mg_type == PERL_MAGIC_ext);	897	assert (mg->mg_type == PERL_MAGIC_ext);
889	return (struct coro *)mg->mg_ptr;	898	return (struct coro *)mg->mg_ptr;
890	}	899	}
891		900
892	static void	901	static void
893	prepare_transfer (struct transfer_args ta, SV prev, SV *next, int flags)	902	prepare_transfer (struct transfer_args ta, SV prev_sv, SV *next_sv)
894	{	903	{
895	ta->prev = SvSTATE (prev);	904	ta->prev = SvSTATE (prev_sv);
896	ta->next = SvSTATE (next);	905	ta->next = SvSTATE (next_sv);
897	ta->flags = flags;
898	}	906	}
899		907
900	static void	908	static void
901	api_transfer (SV prev, SV next, int flags)	909	api_transfer (SV prev_sv, SV next_sv)
902	{	910	{
903	dTHX;
904	struct transfer_args ta;	911	struct transfer_args ta;
905		912
906	prepare_transfer (&ta, prev, next, flags);	913	prepare_transfer (&ta, prev_sv, next_sv);
907	TRANSFER (ta);	914	TRANSFER (ta);
		915	}
		916
		917	static int
		918	api_save (SV *coro_sv, int new_save)
		919	{
		920	struct coro *coro = SvSTATE (coro_sv);
		921	int old_save = coro->save;
		922
		923	if (new_save >= 0)
		924	coro->save = new_save;
		925
		926	return old_save;
908	}	927	}
909		928
910	/ Coro ******************************************************************/	929	/ Coro ******************************************************************/
911		930
912	#define PRIO_MAX 3	931	#define PRIO_MAX 3
…		…
915	#define PRIO_LOW -1	934	#define PRIO_LOW -1
916	#define PRIO_IDLE -3	935	#define PRIO_IDLE -3
917	#define PRIO_MIN -4	936	#define PRIO_MIN -4
918		937
919	/* for Coro.pm */	938	/* for Coro.pm */
920	static GV coro_current, coro_idle;	939	static SV *coro_current;
921	static AV *coro_ready [PRIO_MAX-PRIO_MIN+1];	940	static AV *coro_ready [PRIO_MAX-PRIO_MIN+1];
922	static int coro_nready;	941	static int coro_nready;
923		942
924	static void	943	static void
925	coro_enq (SV *sv)	944	coro_enq (SV *coro_sv)
926	{	945	{
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);	946	av_push (coro_ready [SvSTATE (coro_sv)->prio - PRIO_MIN], coro_sv);
935	coro_nready++;	947	coro_nready++;
936	}	948	}
937		949
938	static SV *	950	static SV *
939	coro_deq (int min_prio)	951	coro_deq (int min_prio)
…		…
952	}	964	}
953		965
954	return 0;	966	return 0;
955	}	967	}
956		968
957	static void	969	static int
958	api_ready (SV *coro)	970	api_ready (SV *coro_sv)
959	{	971	{
960	dTHX;	972	struct coro *coro;
961		973
962	if (SvROK (coro))	974	if (SvROK (coro_sv))
963	coro = SvRV (coro);	975	coro_sv = SvRV (coro_sv);
		976
		977	coro = SvSTATE (coro_sv);
		978
		979	if (coro->flags & CF_READY)
		980	return 0;
		981
		982	coro->flags \|= CF_READY;
964		983
965	LOCK;	984	LOCK;
966	coro_enq (SvREFCNT_inc (coro));	985	coro_enq (SvREFCNT_inc (coro_sv));
967	UNLOCK;	986	UNLOCK;
		987
		988	return 1;
		989	}
		990
		991	static int
		992	api_is_ready (SV *coro_sv)
		993	{
		994	return !!(SvSTATE (coro_sv)->flags & CF_READY);
968	}	995	}
969		996
970	static void	997	static void
971	prepare_schedule (struct transfer_args *ta)	998	prepare_schedule (struct transfer_args *ta)
972	{	999	{
973	SV current, prev, *next;	1000	SV prev_sv, next_sv;
974
975	current = GvSV (coro_current);
976		1001
977	for (;;)	1002	for (;;)
978	{	1003	{
979	LOCK;	1004	LOCK;
980	next = coro_deq (PRIO_MIN);	1005	next_sv = coro_deq (PRIO_MIN);
981	UNLOCK;	1006	UNLOCK;
982		1007
		1008	/* nothing to schedule: call the idle handler */
983	if (next)	1009	if (!next_sv)
984	break;
985
986	{	1010	{
987	dSP;	1011	dSP;
988		1012
989	ENTER;	1013	ENTER;
990	SAVETMPS;	1014	SAVETMPS;
991		1015
992	PUSHMARK (SP);	1016	PUSHMARK (SP);
993	PUTBACK;	1017	PUTBACK;
994	call_sv (GvSV (coro_idle), G_DISCARD);	1018	call_sv (get_sv ("Coro::idle", FALSE), G_DISCARD);
995		1019
996	FREETMPS;	1020	FREETMPS;
997	LEAVE;	1021	LEAVE;
		1022	continue;
998	}	1023	}
999	}
1000		1024
1001	prev = SvRV (current);	1025	ta->next = SvSTATE (next_sv);
1002	SvRV (current) = next;	1026
		1027	/* cannot transfer to destroyed coros, skip and look for next */
		1028	if (ta->next->flags & CF_DESTROYED)
		1029	{
		1030	SvREFCNT_dec (next_sv);
		1031	continue;
		1032	}
		1033
		1034	break;
		1035	}
1003		1036
1004	/* free this only after the transfer */	1037	/* free this only after the transfer */
		1038	prev_sv = SvRV (coro_current);
		1039	SvRV_set (coro_current, next_sv);
		1040	ta->prev = SvSTATE (prev_sv);
		1041
		1042	assert (ta->next->flags & CF_READY);
		1043	ta->next->flags &= ~CF_READY;
		1044
1005	LOCK;	1045	LOCK;
1006	free_coro_mortal ();	1046	free_coro_mortal ();
		1047	coro_mortal = prev_sv;
1007	UNLOCK;	1048	UNLOCK;
1008	coro_mortal = prev;
1009
1010	ta->prev = SvSTATE (prev);
1011	ta->next = SvSTATE (next);
1012	ta->flags = TRANSFER_SAVE_ALL;
1013	}	1049	}
1014		1050
1015	static void	1051	static void
1016	prepare_cede (struct transfer_args *ta)	1052	prepare_cede (struct transfer_args *ta)
1017	{	1053	{
1018	LOCK;	1054	api_ready (coro_current);
1019	coro_enq (SvREFCNT_inc (SvRV (GvSV (coro_current))));
1020	UNLOCK;
1021
1022	prepare_schedule (ta);	1055	prepare_schedule (ta);
1023	}	1056	}
1024		1057
		1058	static int
		1059	prepare_cede_notself (struct transfer_args *ta)
		1060	{
		1061	if (coro_nready)
		1062	{
		1063	SV *prev = SvRV (coro_current);
		1064	prepare_schedule (ta);
		1065	api_ready (prev);
		1066	return 1;
		1067	}
		1068	else
		1069	return 0;
		1070	}
		1071
1025	static void	1072	static void
1026	api_schedule (void)	1073	api_schedule (void)
1027	{	1074	{
1028	dTHX;
1029	struct transfer_args ta;	1075	struct transfer_args ta;
1030		1076
1031	prepare_schedule (&ta);	1077	prepare_schedule (&ta);
1032	TRANSFER (ta);	1078	TRANSFER (ta);
1033	}	1079	}
1034		1080
1035	static void	1081	static int
1036	api_cede (void)	1082	api_cede (void)
1037	{	1083	{
1038	dTHX;
1039	struct transfer_args ta;	1084	struct transfer_args ta;
1040		1085
1041	prepare_cede (&ta);	1086	prepare_cede (&ta);
		1087
		1088	if (ta.prev != ta.next)
		1089	{
1042	TRANSFER (ta);	1090	TRANSFER (ta);
		1091	return 1;
		1092	}
		1093	else
		1094	return 0;
		1095	}
		1096
		1097	static int
		1098	api_cede_notself (void)
		1099	{
		1100	struct transfer_args ta;
		1101
		1102	if (prepare_cede_notself (&ta))
		1103	{
		1104	TRANSFER (ta);
		1105	return 1;
		1106	}
		1107	else
		1108	return 0;
1043	}	1109	}
1044		1110
1045	MODULE = Coro::State PACKAGE = Coro::State	1111	MODULE = Coro::State PACKAGE = Coro::State
1046		1112
1047	PROTOTYPES: DISABLE	1113	PROTOTYPES: DISABLE
…		…
1053	#endif	1119	#endif
1054	BOOT_PAGESIZE;	1120	BOOT_PAGESIZE;
1055		1121
1056	coro_state_stash = gv_stashpv ("Coro::State", TRUE);	1122	coro_state_stash = gv_stashpv ("Coro::State", TRUE);
1057		1123
1058	newCONSTSUB (coro_state_stash, "SAVE_DEFAV", newSViv (TRANSFER_SAVE_DEFAV));	1124	newCONSTSUB (coro_state_stash, "SAVE_DEFAV", newSViv (CORO_SAVE_DEFAV));
1059	newCONSTSUB (coro_state_stash, "SAVE_DEFSV", newSViv (TRANSFER_SAVE_DEFSV));	1125	newCONSTSUB (coro_state_stash, "SAVE_DEFSV", newSViv (CORO_SAVE_DEFSV));
1060	newCONSTSUB (coro_state_stash, "SAVE_ERRSV", newSViv (TRANSFER_SAVE_ERRSV));	1126	newCONSTSUB (coro_state_stash, "SAVE_ERRSV", newSViv (CORO_SAVE_ERRSV));
		1127	newCONSTSUB (coro_state_stash, "SAVE_IRSSV", newSViv (CORO_SAVE_IRSSV));
		1128	newCONSTSUB (coro_state_stash, "SAVE_ALL", newSViv (CORO_SAVE_ALL));
1061		1129
1062	main_mainstack = PL_mainstack;	1130	main_mainstack = PL_mainstack;
1063		1131
1064	coroapi.ver = CORO_API_VERSION;	1132	coroapi.ver = CORO_API_VERSION;
1065	coroapi.transfer = api_transfer;	1133	coroapi.transfer = api_transfer;
…		…
1075	HV *hv;	1143	HV *hv;
1076	int i;	1144	int i;
1077		1145
1078	Newz (0, coro, 1, struct coro);	1146	Newz (0, coro, 1, struct coro);
1079	coro->args = newAV ();	1147	coro->args = newAV ();
		1148	coro->save = CORO_SAVE_ALL;
		1149	coro->flags = CF_NEW;
1080		1150
1081	hv = newHV ();	1151	hv = newHV ();
1082	sv_magicext ((SV )hv, 0, PERL_MAGIC_ext, &coro_state_vtbl, (char )coro, 0)->mg_flags \|= MGf_DUP;	1152	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));	1153	RETVAL = sv_bless (newRV_noinc ((SV *)hv), gv_stashpv (klass, 1));
1084		1154
1085	for (i = 1; i < items; i++)	1155	for (i = 1; i < items; i++)
1086	av_push (coro->args, newSVsv (ST (i)));	1156	av_push (coro->args, newSVsv (ST (i)));
1087	}	1157	}
1088	OUTPUT:	1158	OUTPUT:
		1159	RETVAL
		1160
		1161	int
		1162	save (SV *coro, int new_save = -1)
		1163	CODE:
		1164	RETVAL = api_save (coro, new_save);
		1165	OUTPUT:
1089	RETVAL	1166	RETVAL
1090		1167
1091	void	1168	void
1092	_set_stacklevel (...)	1169	_set_stacklevel (...)
1093	ALIAS:	1170	ALIAS:
1094	Coro::State::transfer = 1	1171	Coro::State::transfer = 1
1095	Coro::schedule = 2	1172	Coro::schedule = 2
1096	Coro::cede = 3	1173	Coro::cede = 3
1097	Coro::Cont::yield = 4	1174	Coro::cede_notself = 4
1098	CODE:	1175	CODE:
1099	{	1176	{
1100	struct transfer_args ta;	1177	struct transfer_args ta;
1101		1178
1102	switch (ix)	1179	switch (ix)
1103	{	1180	{
1104	case 0:	1181	case 0:
1105	ta.prev = (struct coro )INT2PTR (coro_cctx , SvIV (ST (0)));	1182	ta.prev = (struct coro )INT2PTR (coro_cctx , SvIV (ST (0)));
1106	ta.next = 0;	1183	ta.next = 0;
1107	ta.flags = TRANSFER_SET_STACKLEVEL;
1108	break;	1184	break;
1109		1185
1110	case 1:	1186	case 1:
1111	if (items != 3)	1187	if (items != 2)
1112	croak ("Coro::State::transfer(prev,next,flags) expects three arguments, not %d", items);	1188	croak ("Coro::State::transfer (prev,next) expects two arguments, not %d", items);
1113		1189
1114	prepare_transfer (&ta, ST (0), ST (1), SvIV (ST (2)));	1190	prepare_transfer (&ta, ST (0), ST (1));
1115	break;	1191	break;
1116		1192
1117	case 2:	1193	case 2:
1118	prepare_schedule (&ta);	1194	prepare_schedule (&ta);
1119	break;	1195	break;
…		…
1121	case 3:	1197	case 3:
1122	prepare_cede (&ta);	1198	prepare_cede (&ta);
1123	break;	1199	break;
1124		1200
1125	case 4:	1201	case 4:
1126	{	1202	if (!prepare_cede_notself (&ta))
1127	SV *yieldstack;	1203	XSRETURN_EMPTY;
1128	SV *sv;
1129	AV *defav = GvAV (PL_defgv);
1130		1204
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;	1205	break;
1150
1151	}	1206	}
1152		1207
		1208	BARRIER;
1153	TRANSFER (ta);	1209	TRANSFER (ta);
1154	}
1155		1210
1156	void	1211	if (GIMME_V != G_VOID && ta.next != ta.prev)
1157	_clone_state_from (SV dst, SV src)	1212	XSRETURN_YES;
		1213	}
		1214
		1215	bool
		1216	_destroy (SV *coro_sv)
1158	CODE:	1217	CODE:
1159	{	1218	RETVAL = coro_state_destroy (SvSTATE (coro_sv));
1160	struct coro *coro_src = SvSTATE (src);	1219	OUTPUT:
1161		1220	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		1221
1168	void	1222	void
1169	_exit (code)	1223	_exit (code)
1170	int code	1224	int code
1171	PROTOTYPE: $	1225	PROTOTYPE: $
…		…
1199	newCONSTSUB (coro_stash, "PRIO_NORMAL", newSViv (PRIO_NORMAL));	1253	newCONSTSUB (coro_stash, "PRIO_NORMAL", newSViv (PRIO_NORMAL));
1200	newCONSTSUB (coro_stash, "PRIO_LOW", newSViv (PRIO_LOW));	1254	newCONSTSUB (coro_stash, "PRIO_LOW", newSViv (PRIO_LOW));
1201	newCONSTSUB (coro_stash, "PRIO_IDLE", newSViv (PRIO_IDLE));	1255	newCONSTSUB (coro_stash, "PRIO_IDLE", newSViv (PRIO_IDLE));
1202	newCONSTSUB (coro_stash, "PRIO_MIN", newSViv (PRIO_MIN));	1256	newCONSTSUB (coro_stash, "PRIO_MIN", newSViv (PRIO_MIN));
1203		1257
1204	coro_current = gv_fetchpv ("Coro::current", TRUE, SVt_PV);	1258	coro_current = get_sv ("Coro::current", FALSE);
1205	coro_idle = gv_fetchpv ("Coro::idle" , TRUE, SVt_PV);	1259	SvREADONLY_on (coro_current);
1206		1260
1207	for (i = PRIO_MAX - PRIO_MIN + 1; i--; )	1261	for (i = PRIO_MAX - PRIO_MIN + 1; i--; )
1208	coro_ready[i] = newAV ();	1262	coro_ready[i] = newAV ();
1209		1263
1210	{	1264	{
1211	SV *sv = perl_get_sv("Coro::API", 1);	1265	SV *sv = perl_get_sv("Coro::API", 1);
1212		1266
1213	coroapi.schedule = api_schedule;	1267	coroapi.schedule = api_schedule;
		1268	coroapi.save = api_save;
1214	coroapi.cede = api_cede;	1269	coroapi.cede = api_cede;
		1270	coroapi.cede_notself = api_cede_notself;
1215	coroapi.ready = api_ready;	1271	coroapi.ready = api_ready;
		1272	coroapi.is_ready = api_is_ready;
1216	coroapi.nready = &coro_nready;	1273	coroapi.nready = &coro_nready;
1217	coroapi.current = coro_current;	1274	coroapi.current = coro_current;
1218		1275
1219	GCoroAPI = &coroapi;	1276	GCoroAPI = &coroapi;
1220	sv_setiv (sv, (IV)&coroapi);	1277	sv_setiv (sv, (IV)&coroapi);
1221	SvREADONLY_on (sv);	1278	SvREADONLY_on (sv);
1222	}	1279	}
1223	}	1280	}
		1281
		1282	void
		1283	_set_current (SV *current)
		1284	PROTOTYPE: $
		1285	CODE:
		1286	SvREFCNT_dec (SvRV (coro_current));
		1287	SvRV_set (coro_current, SvREFCNT_inc (SvRV (current)));
1224		1288
1225	int	1289	int
1226	prio (Coro::State coro, int newprio = 0)	1290	prio (Coro::State coro, int newprio = 0)
1227	ALIAS:	1291	ALIAS:
1228	nice = 1	1292	nice = 1
…		…
1231	RETVAL = coro->prio;	1295	RETVAL = coro->prio;
1232		1296
1233	if (items > 1)	1297	if (items > 1)
1234	{	1298	{
1235	if (ix)	1299	if (ix)
1236	newprio += coro->prio;	1300	newprio = coro->prio - newprio;
1237		1301
1238	if (newprio < PRIO_MIN) newprio = PRIO_MIN;	1302	if (newprio < PRIO_MIN) newprio = PRIO_MIN;
1239	if (newprio > PRIO_MAX) newprio = PRIO_MAX;	1303	if (newprio > PRIO_MAX) newprio = PRIO_MAX;
1240		1304
1241	coro->prio = newprio;	1305	coro->prio = newprio;
1242	}	1306	}
1243	}	1307	}
		1308	OUTPUT:
		1309	RETVAL
1244		1310
1245	void	1311	SV *
1246	ready (SV *self)	1312	ready (SV *self)
1247	PROTOTYPE: $	1313	PROTOTYPE: $
1248	CODE:	1314	CODE:
1249	api_ready (self);	1315	RETVAL = boolSV (api_ready (self));
		1316	OUTPUT:
		1317	RETVAL
		1318
		1319	SV *
		1320	is_ready (SV *self)
		1321	PROTOTYPE: $
		1322	CODE:
		1323	RETVAL = boolSV (api_is_ready (self));
		1324	OUTPUT:
		1325	RETVAL
1250		1326
1251	int	1327	int
1252	nready (...)	1328	nready (...)
1253	PROTOTYPE:	1329	PROTOTYPE:
1254	CODE:	1330	CODE:
…		…
1260		1336
1261	SV *	1337	SV *
1262	_get_state ()	1338	_get_state ()
1263	CODE:	1339	CODE:
1264	{	1340	{
1265	struct {	1341	struct io_state *data;
1266	int errorno;
1267	int laststype;
1268	int laststatval;
1269	Stat_t statcache;
1270	} data;
1271		1342
		1343	RETVAL = newSV (sizeof (struct io_state));
		1344	data = (struct io_state *)SvPVX (RETVAL);
		1345	SvCUR_set (RETVAL, sizeof (struct io_state));
		1346	SvPOK_only (RETVAL);
		1347
1272	data.errorno = errno;	1348	data->errorno = errno;
1273	data.laststype = PL_laststype;	1349	data->laststype = PL_laststype;
1274	data.laststatval = PL_laststatval;	1350	data->laststatval = PL_laststatval;
1275	data.statcache = PL_statcache;	1351	data->statcache = PL_statcache;
1276
1277	RETVAL = newSVpvn ((char *)&data, sizeof data);
1278	}	1352	}
1279	OUTPUT:	1353	OUTPUT:
1280	RETVAL	1354	RETVAL
1281		1355
1282	void	1356	void
1283	_set_state (char *data_)	1357	_set_state (char *data_)
1284	PROTOTYPE: $	1358	PROTOTYPE: $
1285	CODE:	1359	CODE:
1286	{	1360	{
1287	struct {	1361	struct io_state data = (void )data_;
1288	int errorno;
1289	int laststype;
1290	int laststatval;
1291	Stat_t statcache;
1292	} data = (void )data_;
1293		1362
1294	errno = data->errorno;	1363	errno = data->errorno;
1295	PL_laststype = data->laststype;	1364	PL_laststype = data->laststype;
1296	PL_laststatval = data->laststatval;	1365	PL_laststatval = data->laststatval;
1297	PL_statcache = data->statcache;	1366	PL_statcache = data->statcache;
1298	}	1367	}
		1368

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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 1.136 by root, Fri Jan 12 01:05:55 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 1.136 by root, Fri Jan 12 01:05:55 2007 UTC