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

Comparing Coro/Coro/State.xs (file contents):
Revision 1.105 by root, Mon Nov 27 02:01:33 2006 UTC vs.
Revision 1.132 by root, Fri Dec 29 13:03:05 2006 UTC

…		…
4	#include "perl.h"	4	#include "perl.h"
5	#include "XSUB.h"	5	#include "XSUB.h"
6		6
7	#include "patchlevel.h"	7	#include "patchlevel.h"
8		8
		9	#include <stdio.h>
		10	#include <errno.h>
		11	#include <assert.h>
		12
		13	#ifdef HAVE_MMAP
		14	# include <unistd.h>
		15	# include <sys/mman.h>
		16	# ifndef MAP_ANONYMOUS
		17	# ifdef MAP_ANON
		18	# define MAP_ANONYMOUS MAP_ANON
		19	# else
		20	# undef HAVE_MMAP
		21	# endif
		22	# endif
		23	# include <limits.h>
		24	# ifndef PAGESIZE
		25	# define PAGESIZE pagesize
		26	# define BOOT_PAGESIZE pagesize = sysconf (_SC_PAGESIZE)
		27	static long pagesize;
		28	# else
		29	# define BOOT_PAGESIZE (void)0
		30	# endif
		31	#else
		32	# define PAGESIZE 0
		33	# define BOOT_PAGESIZE (void)0
		34	#endif
		35
9	#if USE_VALGRIND	36	#if USE_VALGRIND
10	# include <valgrind/valgrind.h>	37	# include <valgrind/valgrind.h>
11	#endif	38	#endif
		39
		40	/* the maximum number of idle cctx that will be pooled */
		41	#define MAX_IDLE_CCTX 8
12		42
13	#define PERL_VERSION_ATLEAST(a,b,c) \	43	#define PERL_VERSION_ATLEAST(a,b,c) \
14	(PERL_REVISION > (a) \	44	(PERL_REVISION > (a) \
15	\|\| (PERL_REVISION == (a) \	45	\|\| (PERL_REVISION == (a) \
16	&& (PERL_VERSION > (b) \	46	&& (PERL_VERSION > (b) \
…		…
35	# ifndef IS_PADCONST	65	# ifndef IS_PADCONST
36	# define IS_PADCONST(v) 0	66	# define IS_PADCONST(v) 0
37	# endif	67	# endif
38	#endif	68	#endif
39		69
40	#include <stdio.h>	70	/* 5.8.7 */
41	#include <errno.h>	71	#ifndef SvRV_set
		72	# define SvRV_set(s,v) SvRV(s) = (v)
		73	#endif
42		74
43	#if !__i386 && !__x86_64 && !__powerpc && !__m68k && !__alpha && !__mips && !__sparc64	75	#if !__i386 && !__x86_64 && !__powerpc && !__m68k && !__alpha && !__mips && !__sparc64
44	# undef STACKGUARD	76	# undef STACKGUARD
45	#endif	77	#endif
46		78
47	#ifndef STACKGUARD	79	#ifndef STACKGUARD
48	# define STACKGUARD 0	80	# define STACKGUARD 0
49	#endif	81	#endif
50		82
51	#ifdef HAVE_MMAP	83	/* prefer perl internal functions over our own? */
52	# include <unistd.h>	84	#ifndef PREFER_PERL_FUNCTIONS
53	# include <sys/mman.h>	85	# define PREFER_PERL_FUNCTIONS 0
54	# ifndef MAP_ANONYMOUS
55	# ifdef MAP_ANON
56	# define MAP_ANONYMOUS MAP_ANON
57	# else
58	# undef HAVE_MMAP
59	# endif
60	# endif
61	# include <limits.h>
62	# ifndef PAGESIZE
63	# define PAGESIZE pagesize
64	# define BOOT_PAGESIZE pagesize = sysconf (_SC_PAGESIZE)
65	static long pagesize;
66	# else
67	# define BOOT_PAGESIZE
68	# endif
69	#endif	86	#endif
70		87
71	/* 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
72	* 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
73	* and should be unique. */	90	* and should be unique. */
…		…
76		93
77	#define IN_DESTRUCT (PL_main_cv == Nullcv)	94	#define IN_DESTRUCT (PL_main_cv == Nullcv)
78		95
79	#if __GNUC__ >= 3	96	#if __GNUC__ >= 3
80	# define attribute(x) __attribute__(x)	97	# define attribute(x) __attribute__(x)
		98	# define BARRIER __asm__ __volatile__ ("" : : : "memory")
81	#else	99	#else
82	# define attribute(x)	100	# define attribute(x)
		101	# define BARRIER
83	#endif	102	#endif
84		103
85	#define NOINLINE attribute ((noinline))	104	#define NOINLINE attribute ((noinline))
86		105
87	#include "CoroAPI.h"	106	#include "CoroAPI.h"
88
89	#define TRANSFER_SET_STACKLEVEL 0x8bfbfbfb /* magic cookie */
90		107
91	#ifdef USE_ITHREADS	108	#ifdef USE_ITHREADS
92	static perl_mutex coro_mutex;	109	static perl_mutex coro_mutex;
93	# define LOCK do { MUTEX_LOCK (&coro_mutex); } while (0)	110	# define LOCK do { MUTEX_LOCK (&coro_mutex); } while (0)
94	# define UNLOCK do { MUTEX_UNLOCK (&coro_mutex); } while (0)	111	# define UNLOCK do { MUTEX_UNLOCK (&coro_mutex); } while (0)
95	#else	112	#else
96	# define LOCK (void)0	113	# define LOCK (void)0
97	# define UNLOCK (void)0	114	# define UNLOCK (void)0
98	#endif	115	#endif
99		116
		117	struct io_state
		118	{
		119	int errorno;
		120	I32 laststype;
		121	int laststatval;
		122	Stat_t statcache;
		123	};
		124
100	static struct CoroAPI coroapi;	125	static struct CoroAPI coroapi;
101	static AV main_mainstack; / used to differentiate between $main and others */	126	static AV main_mainstack; / used to differentiate between $main and others */
102	static HV coro_state_stash, coro_stash;	127	static HV coro_state_stash, coro_stash;
103	static SV coro_mortal; / will be freed after next transfer */	128	static SV coro_mortal; / will be freed after next transfer */
104		129
		130	static struct coro_cctx *cctx_first;
		131	static int cctx_count, cctx_idle;
		132
105	/* this is a structure representing a c-level coroutine */	133	/* this is a structure representing a c-level coroutine */
106	typedef struct coro_stack {	134	typedef struct coro_cctx {
107	struct coro_stack *next;	135	struct coro_cctx *next;
108		136
109	/* the stack */	137	/* the stack */
110	void *sptr;	138	void *sptr;
111	long ssize; /* positive == mmap, otherwise malloc */	139	long ssize; /* positive == mmap, otherwise malloc */
112		140
113	/* cpu state */	141	/* cpu state */
114	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 */
115	JMPENV *top_env;	144	JMPENV *top_env;
116	coro_context cctx;	145	coro_context cctx;
117		146
		147	int inuse;
		148
118	#if USE_VALGRIND	149	#if USE_VALGRIND
119	int valgrind_id;	150	int valgrind_id;
120	#endif	151	#endif
121	} coro_stack;	152	} coro_cctx;
		153
		154	enum {
		155	CF_RUNNING = 0x0001, /* coroutine is running */
		156	CF_READY = 0x0002, /* coroutine is ready */
		157	CF_NEW = 0x0004, /* ahs never been switched to */
		158	};
122		159
123	/* this is a structure representing a perl-level coroutine */	160	/* this is a structure representing a perl-level coroutine */
124	struct coro {	161	struct coro {
125	/* the c coroutine allocated to this perl coroutine, if any */	162	/* the c coroutine allocated to this perl coroutine, if any */
126	coro_stack *stack;	163	coro_cctx *cctx;
127		164
128	/* data associated with this coroutine (initial args) */	165	/* data associated with this coroutine (initial args) */
129	AV *args;	166	AV *args;
130	int refcnt;	167	int refcnt;
		168	int save; /* CORO_SAVE flags */
		169	int flags; /* CF_ flags */
131		170
132	/* optionally saved, might be zero */	171	/* optionally saved, might be zero */
133	AV *defav;	172	AV defav; / @_ */
134	SV *defsv;	173	SV defsv; / $_ */
135	SV *errsv;	174	SV errsv; / $@ */
		175	SV irssv; / $/ */
		176	SV irssv_sv; / real $/ cache */
136		177
137	/* saved global state not related to stacks */	178	#define VAR(name,type) type name;
138	U8 dowarn;	179	# include "state.h"
139	I32 in_eval;	180	#undef VAR
140
141	/* the stacks and related info (callchain etc..) */
142	PERL_SI *curstackinfo;
143	AV *curstack;
144	AV *mainstack;
145	SV **stack_sp;
146	OP *op;
147	SV **curpad;
148	AV *comppad;
149	CV *compcv;
150	SV **stack_base;
151	SV **stack_max;
152	SV **tmps_stack;
153	I32 tmps_floor;
154	I32 tmps_ix;
155	I32 tmps_max;
156	I32 *markstack;
157	I32 *markstack_ptr;
158	I32 *markstack_max;
159	I32 *scopestack;
160	I32 scopestack_ix;
161	I32 scopestack_max;
162	ANY *savestack;
163	I32 savestack_ix;
164	I32 savestack_max;
165	OP **retstack;
166	I32 retstack_ix;
167	I32 retstack_max;
168	PMOP *curpm;
169	COP *curcop;
170		181
171	/* coro process data */	182	/* coro process data */
172	int prio;	183	int prio;
173	};	184	};
174		185
…		…
238		249
239	#define PERL_MAGIC_coro PERL_MAGIC_ext	250	#define PERL_MAGIC_coro PERL_MAGIC_ext
240		251
241	static MGVTBL vtbl_coro = {0, 0, 0, 0, coro_cv_free};	252	static MGVTBL vtbl_coro = {0, 0, 0, 0, coro_cv_free};
242		253
		254	#define CORO_MAGIC(cv) \
		255	SvMAGIC (cv) \
		256	? SvMAGIC (cv)->mg_type == PERL_MAGIC_coro \
		257	? SvMAGIC (cv) \
		258	: mg_find ((SV *)cv, PERL_MAGIC_coro) \
		259	: 0
		260
243	/* the next two functions merely cache the padlists */	261	/* the next two functions merely cache the padlists */
244	static void	262	static void
245	get_padlist (CV *cv)	263	get_padlist (CV *cv)
246	{	264	{
247	MAGIC mg = mg_find ((SV )cv, PERL_MAGIC_coro);	265	MAGIC *mg = CORO_MAGIC (cv);
		266	AV *av;
248		267
249	if (mg && AvFILLp ((AV *)mg->mg_obj) >= 0)	268	if (mg && AvFILLp ((av = (AV *)mg->mg_obj)) >= 0)
250	CvPADLIST (cv) = (AV )av_pop ((AV )mg->mg_obj);	269	CvPADLIST (cv) = (AV *)AvARRAY (av)[AvFILLp (av)--];
251	else	270	else
252	{	271	{
253	#if 0	272	#if PREFER_PERL_FUNCTIONS
254	/* this is probably cleaner, but also slower? */	273	/* this is probably cleaner, but also slower? */
255	CV *cp = Perl_cv_clone (cv);	274	CV *cp = Perl_cv_clone (cv);
256	CvPADLIST (cv) = CvPADLIST (cp);	275	CvPADLIST (cv) = CvPADLIST (cp);
257	CvPADLIST (cp) = 0;	276	CvPADLIST (cp) = 0;
258	SvREFCNT_dec (cp);	277	SvREFCNT_dec (cp);
…		…
263	}	282	}
264		283
265	static void	284	static void
266	put_padlist (CV *cv)	285	put_padlist (CV *cv)
267	{	286	{
268	MAGIC mg = mg_find ((SV )cv, PERL_MAGIC_coro);	287	MAGIC *mg = CORO_MAGIC (cv);
		288	AV *av;
269		289
270	if (!mg)	290	if (!mg)
271	{	291	{
272	sv_magic ((SV *)cv, 0, PERL_MAGIC_coro, 0, 0);	292	sv_magic ((SV *)cv, 0, PERL_MAGIC_coro, 0, 0);
273	mg = mg_find ((SV *)cv, PERL_MAGIC_coro);	293	mg = mg_find ((SV *)cv, PERL_MAGIC_coro);
274	mg->mg_virtual = &vtbl_coro;	294	mg->mg_virtual = &vtbl_coro;
275	mg->mg_obj = (SV *)newAV ();	295	mg->mg_obj = (SV *)newAV ();
276	}	296	}
277		297
278	av_push ((AV )mg->mg_obj, (SV )CvPADLIST (cv));	298	av = (AV *)mg->mg_obj;
		299
		300	if (AvFILLp (av) >= AvMAX (av))
		301	av_extend (av, AvMAX (av) + 1);
		302
		303	AvARRAY (av)[++AvFILLp (av)] = (SV *)CvPADLIST (cv);
279	}	304	}
280		305
281	#define SB do {	306	#define SB do {
282	#define SE } while (0)	307	#define SE } while (0)
283		308
284	#define LOAD(state) load_state((state));
285	#define SAVE(state,flags) save_state((state),(flags));
286
287	#define REPLACE_SV(sv,val) SB SvREFCNT_dec(sv); (sv) = (val); (val) = 0; SE	309	#define REPLACE_SV(sv,val) SB SvREFCNT_dec (sv); (sv) = (val); (val) = 0; SE
288		310
289	static void	311	static void
290	load_state(Coro__State c)	312	load_perl (Coro__State c)
291	{	313	{
292	PL_dowarn = c->dowarn;	314	#define VAR(name,type) PL_ ## name = c->name;
293	PL_in_eval = c->in_eval;	315	# include "state.h"
294		316	#undef VAR
295	PL_curstackinfo = c->curstackinfo;
296	PL_curstack = c->curstack;
297	PL_mainstack = c->mainstack;
298	PL_stack_sp = c->stack_sp;
299	PL_op = c->op;
300	PL_curpad = c->curpad;
301	PL_comppad = c->comppad;
302	PL_compcv = c->compcv;
303	PL_stack_base = c->stack_base;
304	PL_stack_max = c->stack_max;
305	PL_tmps_stack = c->tmps_stack;
306	PL_tmps_floor = c->tmps_floor;
307	PL_tmps_ix = c->tmps_ix;
308	PL_tmps_max = c->tmps_max;
309	PL_markstack = c->markstack;
310	PL_markstack_ptr = c->markstack_ptr;
311	PL_markstack_max = c->markstack_max;
312	PL_scopestack = c->scopestack;
313	PL_scopestack_ix = c->scopestack_ix;
314	PL_scopestack_max = c->scopestack_max;
315	PL_savestack = c->savestack;
316	PL_savestack_ix = c->savestack_ix;
317	PL_savestack_max = c->savestack_max;
318	#if !PERL_VERSION_ATLEAST (5,9,0)
319	PL_retstack = c->retstack;
320	PL_retstack_ix = c->retstack_ix;
321	PL_retstack_max = c->retstack_max;
322	#endif
323	PL_curpm = c->curpm;
324	PL_curcop = c->curcop;
325		317
326	if (c->defav) REPLACE_SV (GvAV (PL_defgv), c->defav);	318	if (c->defav) REPLACE_SV (GvAV (PL_defgv), c->defav);
327	if (c->defsv) REPLACE_SV (DEFSV , c->defsv);	319	if (c->defsv) REPLACE_SV (DEFSV , c->defsv);
328	if (c->errsv) REPLACE_SV (ERRSV , c->errsv);	320	if (c->errsv) REPLACE_SV (ERRSV , c->errsv);
		321	if (c->irssv)
		322	{
		323	if (c->irssv == PL_rs \|\| sv_eq (PL_rs, c->irssv))
		324	SvREFCNT_dec (c->irssv);
		325	else
		326	{
		327	REPLACE_SV (PL_rs, c->irssv);
		328	if (!c->irssv_sv) c->irssv_sv = get_sv ("/", 0);
		329	sv_setsv (c->irssv_sv, PL_rs);
		330	}
		331	}
329		332
330	{	333	{
331	dSP;	334	dSP;
332	CV *cv;	335	CV *cv;
333		336
334	/* now do the ugly restore mess */	337	/* now do the ugly restore mess */
335	while ((cv = (CV *)POPs))	338	while ((cv = (CV *)POPs))
336	{	339	{
337	AV padlist = (AV )POPs;
338
339	if (padlist)
340	{
341	put_padlist (cv); /* mark this padlist as available */	340	put_padlist (cv); /* mark this padlist as available */
342	CvPADLIST(cv) = padlist;	341	CvDEPTH (cv) = PTR2IV (POPs);
343	}	342	CvPADLIST (cv) = (AV *)POPs;
344
345	++CvDEPTH(cv);
346	}	343	}
347		344
348	PUTBACK;	345	PUTBACK;
349	}	346	}
350	}	347	}
351		348
352	static void	349	static void
353	save_state(Coro__State c, int flags)	350	save_perl (Coro__State c)
354	{	351	{
355	{	352	{
356	dSP;	353	dSP;
357	I32 cxix = cxstack_ix;	354	I32 cxix = cxstack_ix;
358	PERL_CONTEXT *ccstk = cxstack;	355	PERL_CONTEXT *ccstk = cxstack;
…		…
361	/*	358	/*
362	* the worst thing you can imagine happens first - we have to save	359	* the worst thing you can imagine happens first - we have to save
363	* (and reinitialize) all cv's in the whole callchain :(	360	* (and reinitialize) all cv's in the whole callchain :(
364	*/	361	*/
365		362
		363	EXTEND (SP, 3 + 1);
366	PUSHs (Nullsv);	364	PUSHs (Nullsv);
367	/* this loop was inspired by pp_caller */	365	/* this loop was inspired by pp_caller */
368	for (;;)	366	for (;;)
369	{	367	{
370	while (cxix >= 0)	368	while (cxix >= 0)
371	{	369	{
372	PERL_CONTEXT *cx = &ccstk[cxix--];	370	PERL_CONTEXT *cx = &ccstk[cxix--];
373		371
374	if (CxTYPE(cx) == CXt_SUB)	372	if (CxTYPE (cx) == CXt_SUB)
375	{	373	{
376	CV *cv = cx->blk_sub.cv;	374	CV *cv = cx->blk_sub.cv;
		375
377	if (CvDEPTH(cv))	376	if (CvDEPTH (cv))
378	{	377	{
379	EXTEND (SP, CvDEPTH(cv)*2);	378	EXTEND (SP, 3);
380
381	while (--CvDEPTH(cv))
382	{
383	/* this tells the restore code to increment CvDEPTH */
384	PUSHs (Nullsv);
385	PUSHs ((SV *)cv);
386	}
387
388	PUSHs ((SV *)CvPADLIST(cv));	379	PUSHs ((SV *)CvPADLIST (cv));
		380	PUSHs (INT2PTR (SV *, CvDEPTH (cv)));
389	PUSHs ((SV *)cv);	381	PUSHs ((SV *)cv);
390		382
		383	CvDEPTH (cv) = 0;
391	get_padlist (cv);	384	get_padlist (cv);
392	}	385	}
393	}	386	}
394	#ifdef CXt_FORMAT
395	else if (CxTYPE(cx) == CXt_FORMAT)
396	{
397	/* I never used formats, so how should I know how these are implemented? */
398	/* my bold guess is as a simple, plain sub... */
399	croak ("CXt_FORMAT not yet handled. Don't switch coroutines from within formats");
400	}
401	#endif
402	}	387	}
403		388
404	if (top_si->si_type == PERLSI_MAIN)	389	if (top_si->si_type == PERLSI_MAIN)
405	break;	390	break;
406		391
…		…
410	}	395	}
411		396
412	PUTBACK;	397	PUTBACK;
413	}	398	}
414		399
415	c->defav = flags & TRANSFER_SAVE_DEFAV ? (AV *)SvREFCNT_inc (GvAV (PL_defgv)) : 0;	400	c->defav = c->save & CORO_SAVE_DEFAV ? (AV *)SvREFCNT_inc (GvAV (PL_defgv)) : 0;
416	c->defsv = flags & TRANSFER_SAVE_DEFSV ? SvREFCNT_inc (DEFSV) : 0;	401	c->defsv = c->save & CORO_SAVE_DEFSV ? SvREFCNT_inc (DEFSV) : 0;
417	c->errsv = flags & TRANSFER_SAVE_ERRSV ? SvREFCNT_inc (ERRSV) : 0;	402	c->errsv = c->save & CORO_SAVE_ERRSV ? SvREFCNT_inc (ERRSV) : 0;
		403	c->irssv = c->save & CORO_SAVE_IRSSV ? SvREFCNT_inc (PL_rs) : 0;
418		404
419	c->dowarn = PL_dowarn;	405	#define VAR(name,type)c->name = PL_ ## name;
420	c->in_eval = PL_in_eval;	406	# include "state.h"
421		407	#undef VAR
422	c->curstackinfo = PL_curstackinfo;
423	c->curstack = PL_curstack;
424	c->mainstack = PL_mainstack;
425	c->stack_sp = PL_stack_sp;
426	c->op = PL_op;
427	c->curpad = PL_curpad;
428	c->comppad = PL_comppad;
429	c->compcv = PL_compcv;
430	c->stack_base = PL_stack_base;
431	c->stack_max = PL_stack_max;
432	c->tmps_stack = PL_tmps_stack;
433	c->tmps_floor = PL_tmps_floor;
434	c->tmps_ix = PL_tmps_ix;
435	c->tmps_max = PL_tmps_max;
436	c->markstack = PL_markstack;
437	c->markstack_ptr = PL_markstack_ptr;
438	c->markstack_max = PL_markstack_max;
439	c->scopestack = PL_scopestack;
440	c->scopestack_ix = PL_scopestack_ix;
441	c->scopestack_max = PL_scopestack_max;
442	c->savestack = PL_savestack;
443	c->savestack_ix = PL_savestack_ix;
444	c->savestack_max = PL_savestack_max;
445	#if !PERL_VERSION_ATLEAST (5,9,0)
446	c->retstack = PL_retstack;
447	c->retstack_ix = PL_retstack_ix;
448	c->retstack_max = PL_retstack_max;
449	#endif
450	c->curpm = PL_curpm;
451	c->curcop = PL_curcop;
452	}	408	}
453		409
454	/*	410	/*
455	* allocate various perl stacks. This is an exact copy	411	* allocate various perl stacks. This is an exact copy
456	* of perl.c:init_stacks, except that it uses less memory	412	* of perl.c:init_stacks, except that it uses less memory
457	* on the (sometimes correct) assumption that coroutines do	413	* on the (sometimes correct) assumption that coroutines do
458	* not usually need a lot of stackspace.	414	* not usually need a lot of stackspace.
459	*/	415	*/
		416	#if PREFER_PERL_FUNCTIONS
		417	# define coro_init_stacks init_stacks
		418	#else
460	static void	419	static void
461	coro_init_stacks ()	420	coro_init_stacks ()
462	{	421	{
463	PL_curstackinfo = new_stackinfo(96, 1024/sizeof(PERL_CONTEXT) - 1);	422	PL_curstackinfo = new_stackinfo(128, 1024/sizeof(PERL_CONTEXT));
464	PL_curstackinfo->si_type = PERLSI_MAIN;	423	PL_curstackinfo->si_type = PERLSI_MAIN;
465	PL_curstack = PL_curstackinfo->si_stack;	424	PL_curstack = PL_curstackinfo->si_stack;
466	PL_mainstack = PL_curstack; /* remember in case we switch stacks */	425	PL_mainstack = PL_curstack; /* remember in case we switch stacks */
467		426
468	PL_stack_base = AvARRAY(PL_curstack);	427	PL_stack_base = AvARRAY(PL_curstack);
469	PL_stack_sp = PL_stack_base;	428	PL_stack_sp = PL_stack_base;
470	PL_stack_max = PL_stack_base + AvMAX(PL_curstack);	429	PL_stack_max = PL_stack_base + AvMAX(PL_curstack);
471		430
472	New(50,PL_tmps_stack,96,SV*);	431	New(50,PL_tmps_stack,128,SV*);
473	PL_tmps_floor = -1;	432	PL_tmps_floor = -1;
474	PL_tmps_ix = -1;	433	PL_tmps_ix = -1;
475	PL_tmps_max = 96;	434	PL_tmps_max = 128;
476		435
477	New(54,PL_markstack,16,I32);	436	New(54,PL_markstack,32,I32);
478	PL_markstack_ptr = PL_markstack;	437	PL_markstack_ptr = PL_markstack;
479	PL_markstack_max = PL_markstack + 16;	438	PL_markstack_max = PL_markstack + 32;
480		439
481	#ifdef SET_MARK_OFFSET	440	#ifdef SET_MARK_OFFSET
482	SET_MARK_OFFSET;	441	SET_MARK_OFFSET;
483	#endif	442	#endif
484		443
485	New(54,PL_scopestack,16,I32);	444	New(54,PL_scopestack,32,I32);
486	PL_scopestack_ix = 0;	445	PL_scopestack_ix = 0;
487	PL_scopestack_max = 16;	446	PL_scopestack_max = 32;
488		447
489	New(54,PL_savestack,96,ANY);	448	New(54,PL_savestack,64,ANY);
490	PL_savestack_ix = 0;	449	PL_savestack_ix = 0;
491	PL_savestack_max = 96;	450	PL_savestack_max = 64;
492		451
493	#if !PERL_VERSION_ATLEAST (5,9,0)	452	#if !PERL_VERSION_ATLEAST (5,9,0)
494	New(54,PL_retstack,8,OP*);	453	New(54,PL_retstack,16,OP*);
495	PL_retstack_ix = 0;	454	PL_retstack_ix = 0;
496	PL_retstack_max = 8;	455	PL_retstack_max = 16;
497	#endif	456	#endif
498	}	457	}
		458	#endif
499		459
500	/*	460	/*
501	* destroy the stacks, the callchain etc...	461	* destroy the stacks, the callchain etc...
502	*/	462	*/
503	static void	463	static void
504	coro_destroy_stacks()	464	coro_destroy_stacks ()
505	{	465	{
506	if (!IN_DESTRUCT)	466	if (!IN_DESTRUCT)
507	{	467	{
508	/* is this ugly, I ask? */	468	/* restore all saved variables and stuff */
509	LEAVE_SCOPE (0);	469	LEAVE_SCOPE (0);
		470	assert (PL_tmps_floor == -1);
510		471
511	/* sure it is, but more important: is it correct?? :/ */	472	/* free all temporaries */
512	FREETMPS;	473	FREETMPS;
		474	assert (PL_tmps_ix == -1);
513		475
514	/POPSTACK_TO (PL_mainstack);//D//use/	476	POPSTACK_TO (PL_mainstack);
515	}	477	}
516		478
517	while (PL_curstackinfo->si_next)	479	while (PL_curstackinfo->si_next)
518	PL_curstackinfo = PL_curstackinfo->si_next;	480	PL_curstackinfo = PL_curstackinfo->si_next;
519		481
520	while (PL_curstackinfo)	482	while (PL_curstackinfo)
521	{	483	{
522	PERL_SI *p = PL_curstackinfo->si_prev;	484	PERL_SI *p = PL_curstackinfo->si_prev;
523		485
524	{ /D//remove/
525	dSP;
526	SWITCHSTACK (PL_curstack, PL_curstackinfo->si_stack);
527	PUTBACK; /* possibly superfluous */
528	}
529
530	if (!IN_DESTRUCT)	486	if (!IN_DESTRUCT)
531	{
532	dounwind (-1);/D//remove/
533	SvREFCNT_dec (PL_curstackinfo->si_stack);	487	SvREFCNT_dec (PL_curstackinfo->si_stack);
534	}
535		488
536	Safefree (PL_curstackinfo->si_cxstack);	489	Safefree (PL_curstackinfo->si_cxstack);
537	Safefree (PL_curstackinfo);	490	Safefree (PL_curstackinfo);
538	PL_curstackinfo = p;	491	PL_curstackinfo = p;
539	}	492	}
…		…
554	* emulate part of the perl startup here.	507	* emulate part of the perl startup here.
555	*/	508	*/
556		509
557	coro_init_stacks ();	510	coro_init_stacks ();
558		511
559	PL_curcop = 0;	512	PL_curcop = &PL_compiling;
560	PL_in_eval = 0;	513	PL_in_eval = EVAL_NULL;
561	PL_curpm = 0;	514	PL_curpm = 0;
		515	PL_localizing = 0;
		516	PL_dirty = 0;
		517	PL_restartop = 0;
562		518
563	{	519	{
564	dSP;	520	dSP;
565	LOGOP myop;	521	LOGOP myop;
566		522
567	/* I have no idea why this is needed, but it is */
568	PUSHMARK (SP);
569
570	SvREFCNT_dec (GvAV (PL_defgv));	523	SvREFCNT_dec (GvAV (PL_defgv));
571	GvAV (PL_defgv) = coro->args; coro->args = 0;	524	GvAV (PL_defgv) = coro->args; coro->args = 0;
572		525
573	Zero (&myop, 1, LOGOP);	526	Zero (&myop, 1, LOGOP);
574	myop.op_next = Nullop;	527	myop.op_next = Nullop;
575	myop.op_flags = OPf_WANT_VOID;	528	myop.op_flags = OPf_WANT_VOID;
576		529
		530	PUSHMARK (SP);
		531	XPUSHs ((SV *)get_cv ("Coro::State::_coro_init", FALSE));
		532	PUTBACK;
577	PL_op = (OP *)&myop;	533	PL_op = (OP *)&myop;
578
579	PUSHMARK (SP);
580	XPUSHs ((SV *)get_cv ("Coro::State::coro_init", FALSE));
581	PUTBACK;
582	PL_op = PL_ppaddr[OP_ENTERSUB](aTHX);	534	PL_op = PL_ppaddr[OP_ENTERSUB](aTHX);
583	SPAGAIN;	535	SPAGAIN;
584
585	ENTER; /* necessary e.g. for dounwind */
586	}	536	}
		537
		538	ENTER; /* necessary e.g. for dounwind */
587	}	539	}
588		540
589	static void	541	static void
590	free_coro_mortal ()	542	free_coro_mortal ()
591	{	543	{
…		…
594	SvREFCNT_dec (coro_mortal);	546	SvREFCNT_dec (coro_mortal);
595	coro_mortal = 0;	547	coro_mortal = 0;
596	}	548	}
597	}	549	}
598		550
		551	/* inject a fake call to Coro::State::_cctx_init into the execution */
599	static void NOINLINE	552	static void NOINLINE
600	prepare_cctx (coro_stack *cctx)	553	prepare_cctx (coro_cctx *cctx)
601	{	554	{
602	dSP;	555	dSP;
603	LOGOP myop;	556	LOGOP myop;
604		557
605	Zero (&myop, 1, LOGOP);	558	Zero (&myop, 1, LOGOP);
606	myop.op_next = PL_op;	559	myop.op_next = PL_op;
607	myop.op_flags = OPf_WANT_VOID;	560	myop.op_flags = OPf_WANT_VOID \| OPf_STACKED;
608
609	sv_setiv (get_sv ("Coro::State::cctx_stack", FALSE), PTR2IV (cctx));
610		561
611	PUSHMARK (SP);	562	PUSHMARK (SP);
		563	EXTEND (SP, 2);
		564	PUSHs (sv_2mortal (newSViv (PTR2IV (cctx))));
612	XPUSHs ((SV *)get_cv ("Coro::State::cctx_init", FALSE));	565	PUSHs ((SV *)get_cv ("Coro::State::_cctx_init", FALSE));
613	PUTBACK;	566	PUTBACK;
		567	PL_op = (OP *)&myop;
614	PL_restartop = PL_ppaddr[OP_ENTERSUB](aTHX);	568	PL_op = PL_ppaddr[OP_ENTERSUB](aTHX);
615	SPAGAIN;	569	SPAGAIN;
616	}	570	}
617		571
618	static void	572	static void
619	coro_run (void *arg)	573	coro_run (void *arg)
620	{	574	{
621	/* coro_run is the alternative epilogue of transfer() */	575	/* coro_run is the alternative tail of transfer(), so unlock here. */
622	UNLOCK;	576	UNLOCK;
623		577
624	/*	578	/*
625	* this is a _very_ stripped down perl interpreter ;)	579	* this is a _very_ stripped down perl interpreter ;)
626	*/	580	*/
627	PL_top_env = &PL_start_env;	581	PL_top_env = &PL_start_env;
		582
628	/* inject call to cctx_init */	583	/* inject call to cctx_init */
629	prepare_cctx ((coro_stack *)arg);	584	prepare_cctx ((coro_cctx *)arg);
630		585
631	/* somebody will hit me for both perl_run and PL_restartop */	586	/* somebody will hit me for both perl_run and PL_restartop */
		587	PL_restartop = PL_op;
632	perl_run (PL_curinterp);	588	perl_run (PL_curinterp);
633		589
634	fputs ("FATAL: C coroutine fell over the edge of the world, aborting. Did you call exit in a coroutine?\n", stderr);	590	fputs ("FATAL: C coroutine fell over the edge of the world, aborting. Did you call exit in a coroutine?\n", stderr);
635	abort ();	591	abort ();
636	}	592	}
637		593
638	static coro_stack *	594	static coro_cctx *
639	stack_new ()	595	cctx_new ()
640	{	596	{
641	coro_stack *stack;	597	coro_cctx *cctx;
642		598
		599	++cctx_count;
		600
643	New (0, stack, 1, coro_stack);	601	Newz (0, cctx, 1, coro_cctx);
644		602
645	#if HAVE_MMAP	603	#if HAVE_MMAP
646		604
647	stack->ssize = ((STACKSIZE * sizeof (long) + PAGESIZE - 1) / PAGESIZE + STACKGUARD) * PAGESIZE;	605	cctx->ssize = ((STACKSIZE * sizeof (long) + PAGESIZE - 1) / PAGESIZE + STACKGUARD) * PAGESIZE;
648	/* mmap suppsedly does allocate-on-write for us */	606	/* mmap supposedly does allocate-on-write for us */
649	stack->sptr = mmap (0, stack->ssize, PROT_EXEC\|PROT_READ\|PROT_WRITE, MAP_PRIVATE\|MAP_ANONYMOUS, 0, 0);	607	cctx->sptr = mmap (0, cctx->ssize, PROT_EXEC\|PROT_READ\|PROT_WRITE, MAP_PRIVATE\|MAP_ANONYMOUS, 0, 0);
650		608
651	if (stack->sptr == (void *)-1)	609	if (cctx->sptr == (void *)-1)
652	{	610	{
653	perror ("FATAL: unable to mmap stack for coroutine");	611	perror ("FATAL: unable to mmap stack for coroutine");
654	_exit (EXIT_FAILURE);	612	_exit (EXIT_FAILURE);
655	}	613	}
656		614
657	# if STACKGUARD	615	# if STACKGUARD
658	mprotect (stack->sptr, STACKGUARD * PAGESIZE, PROT_NONE);	616	mprotect (cctx->sptr, STACKGUARD * PAGESIZE, PROT_NONE);
659	# endif	617	# endif
660		618
661	#else	619	#else
662		620
663	stack->ssize = STACKSIZE * (long)sizeof (long);	621	cctx->ssize = STACKSIZE * (long)sizeof (long);
664	New (0, stack->sptr, STACKSIZE, long);	622	New (0, cctx->sptr, STACKSIZE, long);
665		623
666	if (!stack->sptr)	624	if (!cctx->sptr)
667	{	625	{
668	perror (stderr, "FATAL: unable to malloc stack for coroutine");	626	perror ("FATAL: unable to malloc stack for coroutine");
669	_exit (EXIT_FAILURE);	627	_exit (EXIT_FAILURE);
670	}	628	}
671		629
672	#endif	630	#endif
673		631
674	#if USE_VALGRIND	632	#if USE_VALGRIND
675	stack->valgrind_id = VALGRIND_STACK_REGISTER (	633	cctx->valgrind_id = VALGRIND_STACK_REGISTER (
676	STACKGUARD * PAGESIZE + (char *)stack->sptr,	634	STACKGUARD * PAGESIZE + (char *)cctx->sptr,
677	stack->ssize + (char *)stack->sptr	635	cctx->ssize + (char *)cctx->sptr
678	);	636	);
679	#endif	637	#endif
680		638
681	coro_create (&stack->cctx, coro_run, (void *)stack, stack->sptr, stack->ssize);	639	coro_create (&cctx->cctx, coro_run, (void *)cctx, cctx->sptr, cctx->ssize);
682		640
683	return stack;	641	return cctx;
684	}	642	}
685		643
686	static void	644	static void
687	stack_free (coro_stack *stack)	645	cctx_destroy (coro_cctx *cctx)
688	{	646	{
689	if (!stack)	647	if (!cctx)
690	return;	648	return;
691		649
		650	--cctx_count;
		651
692	#if USE_VALGRIND	652	#if USE_VALGRIND
693	VALGRIND_STACK_DEREGISTER (stack->valgrind_id);	653	VALGRIND_STACK_DEREGISTER (cctx->valgrind_id);
694	#endif	654	#endif
695		655
696	#if HAVE_MMAP	656	#if HAVE_MMAP
697	munmap (stack->sptr, stack->ssize);	657	munmap (cctx->sptr, cctx->ssize);
698	#else	658	#else
699	Safefree (stack->sptr);	659	Safefree (cctx->sptr);
700	#endif	660	#endif
701		661
702	Safefree (stack);	662	Safefree (cctx);
703	}	663	}
704		664
705	static coro_stack *stack_first;
706	static int cctx_count, cctx_idle;
707
708	static coro_stack *	665	static coro_cctx *
709	stack_get ()	666	cctx_get ()
710	{	667	{
711	coro_stack *stack;	668	coro_cctx *cctx;
712		669
713	if (stack_first)	670	if (cctx_first)
714	{	671	{
		672	cctx = cctx_first;
		673	cctx_first = cctx->next;
715	--cctx_idle;	674	--cctx_idle;
716	stack = stack_first;
717	stack_first = stack->next;
718	}	675	}
719	else	676	else
720	{	677	{
721	++cctx_count;	678	cctx = cctx_new ();
722	stack = stack_new ();
723	PL_op = PL_op->op_next;	679	PL_op = PL_op->op_next;
724	}	680	}
725		681
726	return stack;	682	return cctx;
727	}	683	}
728		684
729	static void	685	static void
730	stack_put (coro_stack *stack)	686	cctx_put (coro_cctx *cctx)
731	{	687	{
		688	/* free another cctx if overlimit */
		689	if (cctx_idle >= MAX_IDLE_CCTX)
		690	{
		691	coro_cctx *first = cctx_first;
		692	cctx_first = first->next;
		693	--cctx_idle;
		694
		695	assert (!first->inuse);
		696	cctx_destroy (first);
		697	}
		698
732	++cctx_idle;	699	++cctx_idle;
733	stack->next = stack_first;	700	cctx->next = cctx_first;
734	stack_first = stack;	701	cctx_first = cctx;
735	}	702	}
736		703
737	/* never call directly, always through the coro_state_transfer global variable */	704	/* never call directly, always through the coro_state_transfer global variable */
738	static void NOINLINE	705	static void NOINLINE
739	transfer (struct coro prev, struct coro next, int flags)	706	transfer (struct coro prev, struct coro next)
740	{	707	{
741	dSTACKLEVEL;	708	dSTACKLEVEL;
742		709
743	/* sometimes transfer is only called to set idle_sp */	710	/* sometimes transfer is only called to set idle_sp */
744	if (flags == TRANSFER_SET_STACKLEVEL)	711	if (!next)
		712	{
745	((coro_stack *)prev)->idle_sp = STACKLEVEL;	713	((coro_cctx *)prev)->idle_sp = STACKLEVEL;
		714	assert (((coro_cctx )prev)->idle_te = PL_top_env); / just for the side-effect when asserts are enabled */
		715	}
746	else if (prev != next)	716	else if (prev != next)
747	{	717	{
748	coro_stack *prev__stack;	718	coro_cctx *prev__cctx;
		719
		720	if (prev->flags & CF_NEW)
		721	{
		722	/* create a new empty context */
		723	Newz (0, prev->cctx, 1, coro_cctx);
		724	prev->cctx->inuse = 1;
		725	prev->flags &= ~CF_NEW;
		726	prev->flags \|= CF_RUNNING;
		727	}
		728
		729	/TODO: must not croak here /
		730	if (!prev->flags & CF_RUNNING)
		731	croak ("Coro::State::transfer called with non-running prev Coro::State, but can only transfer from running states");
		732
		733	if (next->flags & CF_RUNNING)
		734	croak ("Coro::State::transfer called with running next Coro::State, but can only transfer to inactive states");
		735
		736	prev->flags &= ~CF_RUNNING;
		737	next->flags \|= CF_RUNNING;
749		738
750	LOCK;	739	LOCK;
751		740
752	if (next->mainstack)	741	if (next->flags & CF_NEW)
753	{	742	{
754	/* coroutine already started */	743	/* need to start coroutine */
755	SAVE (prev, flags);	744	next->flags &= ~CF_NEW;
756	LOAD (next);	745	/* first get rid of the old state */
		746	save_perl (prev);
		747	/* setup coroutine call */
		748	setup_coro (next);
		749	/* need a new stack */
		750	assert (!next->cctx);
757	}	751	}
758	else	752	else
759	{	753	{
760	/* need to start coroutine */	754	/* coroutine already started */
761	/* first get rid of the old state */	755	save_perl (prev);
762	SAVE (prev, -1);	756	load_perl (next);
763	/* setup coroutine call */
764	setup_coro (next);
765	/* need a stack */
766	next->stack = 0;
767	}	757	}
768		758
769	if (!prev->stack)
770	/* create a new empty context */
771	Newz (0, prev->stack, 1, coro_stack);
772
773	prev__stack = prev->stack;	759	prev__cctx = prev->cctx;
774		760
775	/* possibly "free" the stack */	761	/* possibly "free" the cctx */
776	if (prev__stack->idle_sp == STACKLEVEL)	762	if (prev__cctx->idle_sp == STACKLEVEL)
777	{	763	{
778	stack_put (prev__stack);	764	/* I assume that STACKLEVEL is a stronger indicator than PL_top_env changes */
		765	assert (("ERROR: current top_env must equal previous top_env", PL_top_env == prev__cctx->idle_te));
		766
779	prev->stack = 0;	767	prev->cctx = 0;
		768
		769	cctx_put (prev__cctx);
		770	prev__cctx->inuse = 0;
780	}	771	}
781		772
782	if (!next->stack)	773	if (!next->cctx)
783	next->stack = stack_get ();
784
785	if (prev__stack != next->stack)
786	{	774	{
787	prev__stack->top_env = PL_top_env;	775	next->cctx = cctx_get ();
788	PL_top_env = next->stack->top_env;	776	assert (!next->cctx->inuse);
789	coro_transfer (&prev__stack->cctx, &next->stack->cctx);	777	next->cctx->inuse = 1;
790	}	778	}
791		779
		780	if (prev__cctx != next->cctx)
		781	{
		782	prev__cctx->top_env = PL_top_env;
		783	PL_top_env = next->cctx->top_env;
		784	coro_transfer (&prev__cctx->cctx, &next->cctx->cctx);
		785	}
		786
792	free_coro_mortal ();	787	free_coro_mortal ();
793		788
794	UNLOCK;	789	UNLOCK;
795	}	790	}
796	}	791	}
797		792
798	struct transfer_args	793	struct transfer_args
799	{	794	{
800	struct coro prev, next;	795	struct coro prev, next;
801	int flags;
802	};	796	};
803		797
804	#define TRANSFER(ta) transfer ((ta).prev, (ta).next, (ta).flags)	798	#define TRANSFER(ta) transfer ((ta).prev, (ta).next)
805		799
806	static void	800	static void
807	coro_state_destroy (struct coro *coro)	801	coro_state_destroy (struct coro *coro)
808	{	802	{
809	if (coro->refcnt--)	803	if (coro->refcnt--)
810	return;	804	return;
811		805
812	if (coro->mainstack && coro->mainstack != main_mainstack)	806	if (coro->mainstack && coro->mainstack != main_mainstack)
813	{	807	{
814	struct coro temp;	808	struct coro temp;
		809	Zero (&temp, 1, struct coro);
		810	temp.save = CORO_SAVE_ALL;
815		811
816	SAVE ((&temp), TRANSFER_SAVE_ALL);	812	if (coro->flags & CF_RUNNING)
817	LOAD (coro);	813	croak ("FATAL: tried to destroy currently running coroutine");
		814
		815	save_perl (&temp);
		816	load_perl (coro);
818		817
819	coro_destroy_stacks ();	818	coro_destroy_stacks ();
820		819
821	LOAD ((&temp)); /* this will get rid of defsv etc.. */	820	load_perl (&temp); /* this will get rid of defsv etc.. */
822		821
823	coro->mainstack = 0;	822	coro->mainstack = 0;
824	}	823	}
825		824
826	stack_free (coro->stack);	825	cctx_destroy (coro->cctx);
827	SvREFCNT_dec (coro->args);	826	SvREFCNT_dec (coro->args);
828	Safefree (coro);	827	Safefree (coro);
829	}	828	}
830		829
831	static int	830	static int
…		…
881	assert (mg->mg_type == PERL_MAGIC_ext);	880	assert (mg->mg_type == PERL_MAGIC_ext);
882	return (struct coro *)mg->mg_ptr;	881	return (struct coro *)mg->mg_ptr;
883	}	882	}
884		883
885	static void	884	static void
886	prepare_transfer (struct transfer_args ta, SV prev, SV *next, int flags)	885	prepare_transfer (struct transfer_args ta, SV prev_sv, SV *next_sv)
887	{	886	{
888	ta->prev = SvSTATE (prev);	887	ta->prev = SvSTATE (prev_sv);
889	ta->next = SvSTATE (next);	888	ta->next = SvSTATE (next_sv);
890	ta->flags = flags;
891	}	889	}
892		890
893	static void	891	static void
894	api_transfer (SV prev, SV next, int flags)	892	api_transfer (SV prev_sv, SV next_sv)
895	{	893	{
896	dTHX;
897	struct transfer_args ta;	894	struct transfer_args ta;
898		895
899	prepare_transfer (&ta, prev, next, flags);	896	prepare_transfer (&ta, prev_sv, next_sv);
900	TRANSFER (ta);	897	TRANSFER (ta);
		898	}
		899
		900	static int
		901	api_save (SV *coro_sv, int new_save)
		902	{
		903	struct coro *coro = SvSTATE (coro_sv);
		904	int old_save = coro->save;
		905
		906	if (new_save >= 0)
		907	coro->save = new_save;
		908
		909	return old_save;
901	}	910	}
902		911
903	/ Coro ******************************************************************/	912	/ Coro ******************************************************************/
904		913
905	#define PRIO_MAX 3	914	#define PRIO_MAX 3
…		…
908	#define PRIO_LOW -1	917	#define PRIO_LOW -1
909	#define PRIO_IDLE -3	918	#define PRIO_IDLE -3
910	#define PRIO_MIN -4	919	#define PRIO_MIN -4
911		920
912	/* for Coro.pm */	921	/* for Coro.pm */
913	static GV coro_current, coro_idle;	922	static SV *coro_current;
914	static AV *coro_ready [PRIO_MAX-PRIO_MIN+1];	923	static AV *coro_ready [PRIO_MAX-PRIO_MIN+1];
915	static int coro_nready;	924	static int coro_nready;
916		925
917	static void	926	static void
918	coro_enq (SV *sv)	927	coro_enq (SV *coro_sv)
919	{	928	{
920	int prio;
921
922	if (SvTYPE (sv) != SVt_PVHV)
923	croak ("Coro::ready tried to enqueue something that is not a coroutine");
924
925	prio = SvSTATE (sv)->prio;
926
927	av_push (coro_ready [prio - PRIO_MIN], sv);	929	av_push (coro_ready [SvSTATE (coro_sv)->prio - PRIO_MIN], coro_sv);
928	coro_nready++;	930	coro_nready++;
929	}	931	}
930		932
931	static SV *	933	static SV *
932	coro_deq (int min_prio)	934	coro_deq (int min_prio)
…		…
945	}	947	}
946		948
947	return 0;	949	return 0;
948	}	950	}
949		951
950	static void	952	static int
951	api_ready (SV *coro)	953	api_ready (SV *coro_sv)
952	{	954	{
953	dTHX;	955	struct coro *coro;
954		956
955	if (SvROK (coro))	957	if (SvROK (coro_sv))
956	coro = SvRV (coro);	958	coro_sv = SvRV (coro_sv);
		959
		960	coro = SvSTATE (coro_sv);
		961
		962	if (coro->flags & CF_READY)
		963	return 0;
		964
		965	coro->flags \|= CF_READY;
957		966
958	LOCK;	967	LOCK;
959	coro_enq (SvREFCNT_inc (coro));	968	coro_enq (SvREFCNT_inc (coro_sv));
960	UNLOCK;	969	UNLOCK;
		970
		971	return 1;
		972	}
		973
		974	static int
		975	api_is_ready (SV *coro_sv)
		976	{
		977	return !!(SvSTATE (coro_sv)->flags & CF_READY);
961	}	978	}
962		979
963	static void	980	static void
964	prepare_schedule (struct transfer_args *ta)	981	prepare_schedule (struct transfer_args *ta)
965	{	982	{
966	SV current, prev, *next;	983	SV prev, next;
967
968	current = GvSV (coro_current);
969		984
970	for (;;)	985	for (;;)
971	{	986	{
972	LOCK;	987	LOCK;
973	next = coro_deq (PRIO_MIN);	988	next = coro_deq (PRIO_MIN);
…		…
982	ENTER;	997	ENTER;
983	SAVETMPS;	998	SAVETMPS;
984		999
985	PUSHMARK (SP);	1000	PUSHMARK (SP);
986	PUTBACK;	1001	PUTBACK;
987	call_sv (GvSV (coro_idle), G_DISCARD);	1002	call_sv (get_sv ("Coro::idle", FALSE), G_DISCARD);
988		1003
989	FREETMPS;	1004	FREETMPS;
990	LEAVE;	1005	LEAVE;
991	}	1006	}
992	}	1007	}
993		1008
994	prev = SvRV (current);	1009	prev = SvRV (coro_current);
995	SvRV (current) = next;	1010	SvRV_set (coro_current, next);
996		1011
997	/* free this only after the transfer */	1012	/* free this only after the transfer */
998	LOCK;	1013	LOCK;
999	free_coro_mortal ();	1014	free_coro_mortal ();
1000	UNLOCK;	1015	UNLOCK;
1001	coro_mortal = prev;	1016	coro_mortal = prev;
1002		1017
		1018	assert (!SvROK(prev));//D
		1019	assert (!SvROK(next));//D
		1020
1003	ta->prev = SvSTATE (prev);	1021	ta->prev = SvSTATE (prev);
1004	ta->next = SvSTATE (next);	1022	ta->next = SvSTATE (next);
1005	ta->flags = TRANSFER_SAVE_ALL;	1023
		1024	assert (ta->next->flags & CF_READY);
		1025	ta->next->flags &= ~CF_READY;
1006	}	1026	}
1007		1027
1008	static void	1028	static void
1009	prepare_cede (struct transfer_args *ta)	1029	prepare_cede (struct transfer_args *ta)
1010	{	1030	{
1011	LOCK;	1031	api_ready (coro_current);
1012	coro_enq (SvREFCNT_inc (SvRV (GvSV (coro_current))));
1013	UNLOCK;
1014
1015	prepare_schedule (ta);	1032	prepare_schedule (ta);
1016	}	1033	}
1017		1034
		1035	static int
		1036	prepare_cede_notself (struct transfer_args *ta)
		1037	{
		1038	if (coro_nready)
		1039	{
		1040	SV *prev = SvRV (coro_current);
		1041	prepare_schedule (ta);
		1042	api_ready (prev);
		1043	return 1;
		1044	}
		1045	else
		1046	return 0;
		1047	}
		1048
1018	static void	1049	static void
1019	api_schedule (void)	1050	api_schedule (void)
1020	{	1051	{
1021	dTHX;
1022	struct transfer_args ta;	1052	struct transfer_args ta;
1023		1053
1024	prepare_schedule (&ta);	1054	prepare_schedule (&ta);
1025	TRANSFER (ta);	1055	TRANSFER (ta);
1026	}	1056	}
1027		1057
1028	static void	1058	static int
1029	api_cede (void)	1059	api_cede (void)
1030	{	1060	{
1031	dTHX;
1032	struct transfer_args ta;	1061	struct transfer_args ta;
1033		1062
1034	prepare_cede (&ta);	1063	prepare_cede (&ta);
		1064
		1065	if (ta.prev != ta.next)
		1066	{
1035	TRANSFER (ta);	1067	TRANSFER (ta);
		1068	return 1;
		1069	}
		1070	else
		1071	return 0;
		1072	}
		1073
		1074	static int
		1075	api_cede_notself (void)
		1076	{
		1077	struct transfer_args ta;
		1078
		1079	if (prepare_cede_notself (&ta))
		1080	{
		1081	TRANSFER (ta);
		1082	return 1;
		1083	}
		1084	else
		1085	return 0;
1036	}	1086	}
1037		1087
1038	MODULE = Coro::State PACKAGE = Coro::State	1088	MODULE = Coro::State PACKAGE = Coro::State
1039		1089
1040	PROTOTYPES: DISABLE	1090	PROTOTYPES: DISABLE
…		…
1046	#endif	1096	#endif
1047	BOOT_PAGESIZE;	1097	BOOT_PAGESIZE;
1048		1098
1049	coro_state_stash = gv_stashpv ("Coro::State", TRUE);	1099	coro_state_stash = gv_stashpv ("Coro::State", TRUE);
1050		1100
1051	newCONSTSUB (coro_state_stash, "SAVE_DEFAV", newSViv (TRANSFER_SAVE_DEFAV));	1101	newCONSTSUB (coro_state_stash, "SAVE_DEFAV", newSViv (CORO_SAVE_DEFAV));
1052	newCONSTSUB (coro_state_stash, "SAVE_DEFSV", newSViv (TRANSFER_SAVE_DEFSV));	1102	newCONSTSUB (coro_state_stash, "SAVE_DEFSV", newSViv (CORO_SAVE_DEFSV));
1053	newCONSTSUB (coro_state_stash, "SAVE_ERRSV", newSViv (TRANSFER_SAVE_ERRSV));	1103	newCONSTSUB (coro_state_stash, "SAVE_ERRSV", newSViv (CORO_SAVE_ERRSV));
		1104	newCONSTSUB (coro_state_stash, "SAVE_IRSSV", newSViv (CORO_SAVE_IRSSV));
		1105	newCONSTSUB (coro_state_stash, "SAVE_ALL", newSViv (CORO_SAVE_ALL));
1054		1106
1055	main_mainstack = PL_mainstack;	1107	main_mainstack = PL_mainstack;
1056		1108
1057	coroapi.ver = CORO_API_VERSION;	1109	coroapi.ver = CORO_API_VERSION;
1058	coroapi.transfer = api_transfer;	1110	coroapi.transfer = api_transfer;
…		…
1068	HV *hv;	1120	HV *hv;
1069	int i;	1121	int i;
1070		1122
1071	Newz (0, coro, 1, struct coro);	1123	Newz (0, coro, 1, struct coro);
1072	coro->args = newAV ();	1124	coro->args = newAV ();
		1125	coro->save = CORO_SAVE_ALL;
		1126	coro->flags = CF_NEW;
1073		1127
1074	hv = newHV ();	1128	hv = newHV ();
1075	sv_magicext ((SV )hv, 0, PERL_MAGIC_ext, &coro_state_vtbl, (char )coro, 0)->mg_flags \|= MGf_DUP;	1129	sv_magicext ((SV )hv, 0, PERL_MAGIC_ext, &coro_state_vtbl, (char )coro, 0)->mg_flags \|= MGf_DUP;
1076	RETVAL = sv_bless (newRV_noinc ((SV *)hv), gv_stashpv (klass, 1));	1130	RETVAL = sv_bless (newRV_noinc ((SV *)hv), gv_stashpv (klass, 1));
1077		1131
1078	for (i = 1; i < items; i++)	1132	for (i = 1; i < items; i++)
1079	av_push (coro->args, newSVsv (ST (i)));	1133	av_push (coro->args, newSVsv (ST (i)));
1080
1081	/coro->mainstack = 0; //actual work is done inside transfer /
1082	/coro->stack = 0;/
1083	}	1134	}
1084	OUTPUT:	1135	OUTPUT:
		1136	RETVAL
		1137
		1138	int
		1139	save (SV *coro, int new_save = -1)
		1140	CODE:
		1141	RETVAL = api_save (coro, new_save);
		1142	OUTPUT:
1085	RETVAL	1143	RETVAL
1086		1144
1087	void	1145	void
1088	_set_stacklevel (...)	1146	_set_stacklevel (...)
1089	ALIAS:	1147	ALIAS:
1090	Coro::State::transfer = 1	1148	Coro::State::transfer = 1
1091	Coro::schedule = 2	1149	Coro::schedule = 2
1092	Coro::cede = 3	1150	Coro::cede = 3
1093	Coro::Cont::yield = 4	1151	Coro::cede_notself = 4
1094	CODE:	1152	CODE:
1095	{	1153	{
1096	struct transfer_args ta;	1154	struct transfer_args ta;
1097		1155
1098	switch (ix)	1156	switch (ix)
1099	{	1157	{
1100	case 0:	1158	case 0:
1101	ta.prev = (struct coro )INT2PTR (coro_stack , SvIV (ST (0)));	1159	ta.prev = (struct coro )INT2PTR (coro_cctx , SvIV (ST (0)));
1102	ta.next = 0;	1160	ta.next = 0;
1103	ta.flags = TRANSFER_SET_STACKLEVEL;
1104	break;	1161	break;
1105		1162
1106	case 1:	1163	case 1:
1107	if (items != 3)	1164	if (items != 2)
1108	croak ("Coro::State::transfer(prev,next,flags) expects three arguments, not %d", items);	1165	croak ("Coro::State::transfer (prev,next) expects two arguments, not %d", items);
1109		1166
1110	prepare_transfer (&ta, ST (0), ST (1), SvIV (ST (2)));	1167	prepare_transfer (&ta, ST (0), ST (1));
1111	break;	1168	break;
1112		1169
1113	case 2:	1170	case 2:
1114	prepare_schedule (&ta);	1171	prepare_schedule (&ta);
1115	break;	1172	break;
…		…
1117	case 3:	1174	case 3:
1118	prepare_cede (&ta);	1175	prepare_cede (&ta);
1119	break;	1176	break;
1120		1177
1121	case 4:	1178	case 4:
1122	{	1179	if (!prepare_cede_notself (&ta))
1123	SV *yieldstack;	1180	XSRETURN_EMPTY;
1124	SV *sv;
1125	AV *defav = GvAV (PL_defgv);
1126		1181
1127	yieldstack = *hv_fetch (
1128	(HV *)SvRV (GvSV (coro_current)),
1129	"yieldstack", sizeof ("yieldstack") - 1,
1130	0
1131	);
1132
1133	/* set up @_ -- ugly */
1134	av_clear (defav);
1135	av_fill (defav, items - 1);
1136	while (items--)
1137	av_store (defav, items, SvREFCNT_inc (ST(items)));
1138
1139	sv = av_pop ((AV *)SvRV (yieldstack));
1140	ta.prev = SvSTATE (av_fetch ((AV )SvRV (sv), 0, 0));
1141	ta.next = SvSTATE (av_fetch ((AV )SvRV (sv), 1, 0));
1142	ta.flags = 0;
1143	SvREFCNT_dec (sv);
1144	}
1145	break;	1182	break;
1146
1147	}	1183	}
1148		1184
		1185	BARRIER;
1149	TRANSFER (ta);	1186	TRANSFER (ta);
1150	}	1187	}
1151		1188
1152	void	1189	void
1153	_clone_state_from (SV dst, SV src)	1190	_clone_state_from (SV dst, SV src)
…		…
1166	int code	1203	int code
1167	PROTOTYPE: $	1204	PROTOTYPE: $
1168	CODE:	1205	CODE:
1169	_exit (code);	1206	_exit (code);
1170		1207
		1208	int
		1209	cctx_count ()
		1210	CODE:
		1211	RETVAL = cctx_count;
		1212	OUTPUT:
		1213	RETVAL
		1214
		1215	int
		1216	cctx_idle ()
		1217	CODE:
		1218	RETVAL = cctx_idle;
		1219	OUTPUT:
		1220	RETVAL
		1221
1171	MODULE = Coro::State PACKAGE = Coro	1222	MODULE = Coro::State PACKAGE = Coro
1172		1223
1173	BOOT:	1224	BOOT:
1174	{	1225	{
1175	int i;	1226	int i;
…		…
1181	newCONSTSUB (coro_stash, "PRIO_NORMAL", newSViv (PRIO_NORMAL));	1232	newCONSTSUB (coro_stash, "PRIO_NORMAL", newSViv (PRIO_NORMAL));
1182	newCONSTSUB (coro_stash, "PRIO_LOW", newSViv (PRIO_LOW));	1233	newCONSTSUB (coro_stash, "PRIO_LOW", newSViv (PRIO_LOW));
1183	newCONSTSUB (coro_stash, "PRIO_IDLE", newSViv (PRIO_IDLE));	1234	newCONSTSUB (coro_stash, "PRIO_IDLE", newSViv (PRIO_IDLE));
1184	newCONSTSUB (coro_stash, "PRIO_MIN", newSViv (PRIO_MIN));	1235	newCONSTSUB (coro_stash, "PRIO_MIN", newSViv (PRIO_MIN));
1185		1236
1186	coro_current = gv_fetchpv ("Coro::current", TRUE, SVt_PV);	1237	coro_current = get_sv ("Coro::current", FALSE);
1187	coro_idle = gv_fetchpv ("Coro::idle" , TRUE, SVt_PV);	1238	SvREADONLY_on (coro_current);
1188		1239
1189	for (i = PRIO_MAX - PRIO_MIN + 1; i--; )	1240	for (i = PRIO_MAX - PRIO_MIN + 1; i--; )
1190	coro_ready[i] = newAV ();	1241	coro_ready[i] = newAV ();
1191		1242
1192	{	1243	{
1193	SV *sv = perl_get_sv("Coro::API", 1);	1244	SV *sv = perl_get_sv("Coro::API", 1);
1194		1245
1195	coroapi.schedule = api_schedule;	1246	coroapi.schedule = api_schedule;
		1247	coroapi.save = api_save;
1196	coroapi.cede = api_cede;	1248	coroapi.cede = api_cede;
		1249	coroapi.cede_notself = api_cede_notself;
1197	coroapi.ready = api_ready;	1250	coroapi.ready = api_ready;
		1251	coroapi.is_ready = api_is_ready;
1198	coroapi.nready = &coro_nready;	1252	coroapi.nready = &coro_nready;
1199	coroapi.current = coro_current;	1253	coroapi.current = coro_current;
1200		1254
1201	GCoroAPI = &coroapi;	1255	GCoroAPI = &coroapi;
1202	sv_setiv (sv, (IV)&coroapi);	1256	sv_setiv (sv, (IV)&coroapi);
1203	SvREADONLY_on (sv);	1257	SvREADONLY_on (sv);
1204	}	1258	}
1205	}	1259	}
		1260
		1261	void
		1262	_set_current (SV *current)
		1263	PROTOTYPE: $
		1264	CODE:
		1265	SvREFCNT_dec (SvRV (coro_current));
		1266	SvRV_set (coro_current, SvREFCNT_inc (SvRV (current)));
1206		1267
1207	int	1268	int
1208	prio (Coro::State coro, int newprio = 0)	1269	prio (Coro::State coro, int newprio = 0)
1209	ALIAS:	1270	ALIAS:
1210	nice = 1	1271	nice = 1
…		…
1213	RETVAL = coro->prio;	1274	RETVAL = coro->prio;
1214		1275
1215	if (items > 1)	1276	if (items > 1)
1216	{	1277	{
1217	if (ix)	1278	if (ix)
1218	newprio += coro->prio;	1279	newprio = coro->prio - newprio;
1219		1280
1220	if (newprio < PRIO_MIN) newprio = PRIO_MIN;	1281	if (newprio < PRIO_MIN) newprio = PRIO_MIN;
1221	if (newprio > PRIO_MAX) newprio = PRIO_MAX;	1282	if (newprio > PRIO_MAX) newprio = PRIO_MAX;
1222		1283
1223	coro->prio = newprio;	1284	coro->prio = newprio;
1224	}	1285	}
1225	}	1286	}
		1287	OUTPUT:
		1288	RETVAL
1226		1289
1227	void	1290	SV *
1228	ready (SV *self)	1291	ready (SV *self)
1229	PROTOTYPE: $	1292	PROTOTYPE: $
1230	CODE:	1293	CODE:
1231	api_ready (self);	1294	RETVAL = boolSV (api_ready (self));
		1295	OUTPUT:
		1296	RETVAL
		1297
		1298	SV *
		1299	is_ready (SV *self)
		1300	PROTOTYPE: $
		1301	CODE:
		1302	RETVAL = boolSV (api_is_ready (self));
		1303	OUTPUT:
		1304	RETVAL
1232		1305
1233	int	1306	int
1234	nready (...)	1307	nready (...)
1235	PROTOTYPE:	1308	PROTOTYPE:
1236	CODE:	1309	CODE:
…		…
1242		1315
1243	SV *	1316	SV *
1244	_get_state ()	1317	_get_state ()
1245	CODE:	1318	CODE:
1246	{	1319	{
1247	struct {	1320	struct io_state *data;
1248	int errorno;
1249	int laststype;
1250	int laststatval;
1251	Stat_t statcache;
1252	} data;
1253		1321
		1322	RETVAL = newSV (sizeof (struct io_state));
		1323	data = (struct io_state *)SvPVX (RETVAL);
		1324	SvCUR_set (RETVAL, sizeof (struct io_state));
		1325	SvPOK_only (RETVAL);
		1326
1254	data.errorno = errno;	1327	data->errorno = errno;
1255	data.laststype = PL_laststype;	1328	data->laststype = PL_laststype;
1256	data.laststatval = PL_laststatval;	1329	data->laststatval = PL_laststatval;
1257	data.statcache = PL_statcache;	1330	data->statcache = PL_statcache;
1258
1259	RETVAL = newSVpvn ((char *)&data, sizeof data);
1260	}	1331	}
1261	OUTPUT:	1332	OUTPUT:
1262	RETVAL	1333	RETVAL
1263		1334
1264	void	1335	void
1265	_set_state (char *data_)	1336	_set_state (char *data_)
1266	PROTOTYPE: $	1337	PROTOTYPE: $
1267	CODE:	1338	CODE:
1268	{	1339	{
1269	struct {	1340	struct io_state data = (void )data_;
1270	int errorno;
1271	int laststype;
1272	int laststatval;
1273	Stat_t statcache;
1274	} data = (void )data_;
1275		1341
1276	errno = data->errorno;	1342	errno = data->errorno;
1277	PL_laststype = data->laststype;	1343	PL_laststype = data->laststype;
1278	PL_laststatval = data->laststatval;	1344	PL_laststatval = data->laststatval;
1279	PL_statcache = data->statcache;	1345	PL_statcache = data->statcache;
1280	}	1346	}
		1347

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Comparing Coro/Coro/State.xs (file contents): Revision 1.105 by root, Mon Nov 27 02:01:33 2006 UTC vs. Revision 1.132 by root, Fri Dec 29 13:03:05 2006 UTC

Diff Legend

Comparing Coro/Coro/State.xs (file contents):
Revision 1.105 by root, Mon Nov 27 02:01:33 2006 UTC vs.
Revision 1.132 by root, Fri Dec 29 13:03:05 2006 UTC