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

Comparing Coro/Coro/State.xs (file contents):
Revision 1.103 by root, Mon Nov 27 01:33:30 2006 UTC vs.
Revision 1.131 by root, Fri Dec 29 11:37:49 2006 UTC

…		…
3	#include "EXTERN.h"	3	#include "EXTERN.h"
4	#include "perl.h"	4	#include "perl.h"
5	#include "XSUB.h"	5	#include "XSUB.h"
6		6
7	#include "patchlevel.h"	7	#include "patchlevel.h"
		8
		9	#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
		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
8		42
9	#define PERL_VERSION_ATLEAST(a,b,c) \	43	#define PERL_VERSION_ATLEAST(a,b,c) \
10	(PERL_REVISION > (a) \	44	(PERL_REVISION > (a) \
11	\|\| (PERL_REVISION == (a) \	45	\|\| (PERL_REVISION == (a) \
12	&& (PERL_VERSION > (b) \	46	&& (PERL_VERSION > (b) \
…		…
31	# ifndef IS_PADCONST	65	# ifndef IS_PADCONST
32	# define IS_PADCONST(v) 0	66	# define IS_PADCONST(v) 0
33	# endif	67	# endif
34	#endif	68	#endif
35		69
36	#include <stdio.h>	70	/* 5.8.7 */
37	#include <errno.h>	71	#ifndef SvRV_set
		72	# define SvRV_set(s,v) SvRV(s) = (v)
		73	#endif
38		74
39	#if !__i386 && !__x86_64 && !__powerpc && !__m68k && !__alpha && !__mips && !__sparc64	75	#if !__i386 && !__x86_64 && !__powerpc && !__m68k && !__alpha && !__mips && !__sparc64
40	# undef STACKGUARD	76	# undef STACKGUARD
41	#endif	77	#endif
42		78
43	#ifndef STACKGUARD	79	#ifndef STACKGUARD
44	# define STACKGUARD 0	80	# define STACKGUARD 0
45	#endif	81	#endif
46		82
47	#ifdef HAVE_MMAP	83	/* prefer perl internal functions over our own? */
48	# include <unistd.h>	84	#ifndef PREFER_PERL_FUNCTIONS
49	# include <sys/mman.h>	85	# define PREFER_PERL_FUNCTIONS 0
50	# ifndef MAP_ANONYMOUS
51	# ifdef MAP_ANON
52	# define MAP_ANONYMOUS MAP_ANON
53	# else
54	# undef HAVE_MMAP
55	# endif
56	# endif
57	# include <limits.h>
58	# ifndef PAGESIZE
59	# define PAGESIZE pagesize
60	# define BOOT_PAGESIZE pagesize = sysconf (_SC_PAGESIZE)
61	static long pagesize;
62	# else
63	# define BOOT_PAGESIZE
64	# endif
65	#endif	86	#endif
66		87
67	/* 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
68	* 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
69	* and should be unique. */	90	* and should be unique. */
…		…
72		93
73	#define IN_DESTRUCT (PL_main_cv == Nullcv)	94	#define IN_DESTRUCT (PL_main_cv == Nullcv)
74		95
75	#if __GNUC__ >= 3	96	#if __GNUC__ >= 3
76	# define attribute(x) __attribute__(x)	97	# define attribute(x) __attribute__(x)
		98	# define BARRIER __asm__ __volatile__ ("" : : : "memory")
77	#else	99	#else
78	# define attribute(x)	100	# define attribute(x)
		101	# define BARRIER
79	#endif	102	#endif
80		103
81	#define NOINLINE attribute ((noinline))	104	#define NOINLINE attribute ((noinline))
82		105
83	#include "CoroAPI.h"	106	#include "CoroAPI.h"
84
85	#define TRANSFER_SET_STACKLEVEL 0x8bfbfbfb /* magic cookie */
86		107
87	#ifdef USE_ITHREADS	108	#ifdef USE_ITHREADS
88	static perl_mutex coro_mutex;	109	static perl_mutex coro_mutex;
89	# define LOCK do { MUTEX_LOCK (&coro_mutex); } while (0)	110	# define LOCK do { MUTEX_LOCK (&coro_mutex); } while (0)
90	# define UNLOCK do { MUTEX_UNLOCK (&coro_mutex); } while (0)	111	# define UNLOCK do { MUTEX_UNLOCK (&coro_mutex); } while (0)
91	#else	112	#else
92	# define LOCK (void)0	113	# define LOCK (void)0
93	# define UNLOCK (void)0	114	# define UNLOCK (void)0
94	#endif	115	#endif
95		116
		117	struct io_state
		118	{
		119	int errorno;
		120	I32 laststype;
		121	int laststatval;
		122	Stat_t statcache;
		123	};
		124
96	static struct CoroAPI coroapi;	125	static struct CoroAPI coroapi;
97	static AV main_mainstack; / used to differentiate between $main and others */	126	static AV main_mainstack; / used to differentiate between $main and others */
98	static HV coro_state_stash, coro_stash;	127	static HV coro_state_stash, coro_stash;
99	static SV coro_mortal; / will be freed after next transfer */	128	static SV coro_mortal; / will be freed after next transfer */
100		129
		130	static struct coro_cctx *cctx_first;
		131	static int cctx_count, cctx_idle;
		132
101	/* this is a structure representing a c-level coroutine */	133	/* this is a structure representing a c-level coroutine */
102	typedef struct coro_stack {	134	typedef struct coro_cctx {
103	struct coro_stack *next;	135	struct coro_cctx *next;
104		136
105	/* the stack */	137	/* the stack */
106	void *sptr;	138	void *sptr;
107	long ssize; /* positive == mmap, otherwise malloc */	139	long ssize; /* positive == mmap, otherwise malloc */
108		140
109	/* cpu state */	141	/* cpu state */
110	void idle_sp; / sp of top-level transfer/schedule/cede call */	142	void idle_sp; / sp of top-level transfer/schedule/cede call */
111	JMPENV *top_env;	143	JMPENV *top_env;
112	coro_context cctx;	144	coro_context cctx;
113	} coro_stack;	145
		146	int inuse;
		147
		148	#if USE_VALGRIND
		149	int valgrind_id;
		150	#endif
		151	} coro_cctx;
		152
		153	enum {
		154	CF_RUNNING = 0x0001, /* coroutine is running */
		155	CF_READY = 0x0002, /* coroutine is ready */
		156	CF_NEW = 0x0004, /* ahs never been switched to */
		157	};
114		158
115	/* this is a structure representing a perl-level coroutine */	159	/* this is a structure representing a perl-level coroutine */
116	struct coro {	160	struct coro {
117	/* the c coroutine allocated to this perl coroutine, if any */	161	/* the c coroutine allocated to this perl coroutine, if any */
118	coro_stack *stack;	162	coro_cctx *cctx;
119		163
120	/* data associated with this coroutine (initial args) */	164	/* data associated with this coroutine (initial args) */
121	AV *args;	165	AV *args;
122	int refcnt;	166	int refcnt;
		167	int save; /* CORO_SAVE flags */
		168	int flags; /* CF_ flags */
123		169
124	/* optionally saved, might be zero */	170	/* optionally saved, might be zero */
125	AV *defav;	171	AV defav; / @_ */
126	SV *defsv;	172	SV defsv; / $_ */
127	SV *errsv;	173	SV errsv; / $@ */
		174	SV irssv; / $/ */
		175	SV irssv_sv; / real $/ cache */
128		176
129	/* saved global state not related to stacks */	177	#define VAR(name,type) type name;
130	U8 dowarn;	178	# include "state.h"
131	I32 in_eval;	179	#undef VAR
132
133	/* the stacks and related info (callchain etc..) */
134	PERL_SI *curstackinfo;
135	AV *curstack;
136	AV *mainstack;
137	SV **stack_sp;
138	OP *op;
139	SV **curpad;
140	AV *comppad;
141	CV *compcv;
142	SV **stack_base;
143	SV **stack_max;
144	SV **tmps_stack;
145	I32 tmps_floor;
146	I32 tmps_ix;
147	I32 tmps_max;
148	I32 *markstack;
149	I32 *markstack_ptr;
150	I32 *markstack_max;
151	I32 *scopestack;
152	I32 scopestack_ix;
153	I32 scopestack_max;
154	ANY *savestack;
155	I32 savestack_ix;
156	I32 savestack_max;
157	OP **retstack;
158	I32 retstack_ix;
159	I32 retstack_max;
160	PMOP *curpm;
161	COP *curcop;
162		180
163	/* coro process data */	181	/* coro process data */
164	int prio;	182	int prio;
165	};	183	};
166		184
…		…
230		248
231	#define PERL_MAGIC_coro PERL_MAGIC_ext	249	#define PERL_MAGIC_coro PERL_MAGIC_ext
232		250
233	static MGVTBL vtbl_coro = {0, 0, 0, 0, coro_cv_free};	251	static MGVTBL vtbl_coro = {0, 0, 0, 0, coro_cv_free};
234		252
		253	#define CORO_MAGIC(cv) \
		254	SvMAGIC (cv) \
		255	? SvMAGIC (cv)->mg_type == PERL_MAGIC_coro \
		256	? SvMAGIC (cv) \
		257	: mg_find ((SV *)cv, PERL_MAGIC_coro) \
		258	: 0
		259
235	/* the next two functions merely cache the padlists */	260	/* the next two functions merely cache the padlists */
236	static void	261	static void
237	get_padlist (CV *cv)	262	get_padlist (CV *cv)
238	{	263	{
239	MAGIC mg = mg_find ((SV )cv, PERL_MAGIC_coro);	264	MAGIC *mg = CORO_MAGIC (cv);
		265	AV *av;
240		266
241	if (mg && AvFILLp ((AV *)mg->mg_obj) >= 0)	267	if (mg && AvFILLp ((av = (AV *)mg->mg_obj)) >= 0)
242	CvPADLIST (cv) = (AV )av_pop ((AV )mg->mg_obj);	268	CvPADLIST (cv) = (AV *)AvARRAY (av)[AvFILLp (av)--];
243	else	269	else
244	{	270	{
245	#if 0	271	#if PREFER_PERL_FUNCTIONS
246	/* this is probably cleaner, but also slower? */	272	/* this is probably cleaner, but also slower? */
247	CV *cp = Perl_cv_clone (cv);	273	CV *cp = Perl_cv_clone (cv);
248	CvPADLIST (cv) = CvPADLIST (cp);	274	CvPADLIST (cv) = CvPADLIST (cp);
249	CvPADLIST (cp) = 0;	275	CvPADLIST (cp) = 0;
250	SvREFCNT_dec (cp);	276	SvREFCNT_dec (cp);
…		…
255	}	281	}
256		282
257	static void	283	static void
258	put_padlist (CV *cv)	284	put_padlist (CV *cv)
259	{	285	{
260	MAGIC mg = mg_find ((SV )cv, PERL_MAGIC_coro);	286	MAGIC *mg = CORO_MAGIC (cv);
		287	AV *av;
261		288
262	if (!mg)	289	if (!mg)
263	{	290	{
264	sv_magic ((SV *)cv, 0, PERL_MAGIC_coro, 0, 0);	291	sv_magic ((SV *)cv, 0, PERL_MAGIC_coro, 0, 0);
265	mg = mg_find ((SV *)cv, PERL_MAGIC_coro);	292	mg = mg_find ((SV *)cv, PERL_MAGIC_coro);
266	mg->mg_virtual = &vtbl_coro;	293	mg->mg_virtual = &vtbl_coro;
267	mg->mg_obj = (SV *)newAV ();	294	mg->mg_obj = (SV *)newAV ();
268	}	295	}
269		296
270	av_push ((AV )mg->mg_obj, (SV )CvPADLIST (cv));	297	av = (AV *)mg->mg_obj;
		298
		299	if (AvFILLp (av) >= AvMAX (av))
		300	av_extend (av, AvMAX (av) + 1);
		301
		302	AvARRAY (av)[++AvFILLp (av)] = (SV *)CvPADLIST (cv);
271	}	303	}
272		304
273	#define SB do {	305	#define SB do {
274	#define SE } while (0)	306	#define SE } while (0)
275		307
276	#define LOAD(state) load_state((state));
277	#define SAVE(state,flags) save_state((state),(flags));
278
279	#define REPLACE_SV(sv,val) SB SvREFCNT_dec(sv); (sv) = (val); (val) = 0; SE	308	#define REPLACE_SV(sv,val) SB SvREFCNT_dec (sv); (sv) = (val); (val) = 0; SE
280		309
281	static void	310	static void
282	load_state(Coro__State c)	311	load_perl (Coro__State c)
283	{	312	{
284	PL_dowarn = c->dowarn;	313	#define VAR(name,type) PL_ ## name = c->name;
285	PL_in_eval = c->in_eval;	314	# include "state.h"
286		315	#undef VAR
287	PL_curstackinfo = c->curstackinfo;
288	PL_curstack = c->curstack;
289	PL_mainstack = c->mainstack;
290	PL_stack_sp = c->stack_sp;
291	PL_op = c->op;
292	PL_curpad = c->curpad;
293	PL_comppad = c->comppad;
294	PL_compcv = c->compcv;
295	PL_stack_base = c->stack_base;
296	PL_stack_max = c->stack_max;
297	PL_tmps_stack = c->tmps_stack;
298	PL_tmps_floor = c->tmps_floor;
299	PL_tmps_ix = c->tmps_ix;
300	PL_tmps_max = c->tmps_max;
301	PL_markstack = c->markstack;
302	PL_markstack_ptr = c->markstack_ptr;
303	PL_markstack_max = c->markstack_max;
304	PL_scopestack = c->scopestack;
305	PL_scopestack_ix = c->scopestack_ix;
306	PL_scopestack_max = c->scopestack_max;
307	PL_savestack = c->savestack;
308	PL_savestack_ix = c->savestack_ix;
309	PL_savestack_max = c->savestack_max;
310	#if !PERL_VERSION_ATLEAST (5,9,0)
311	PL_retstack = c->retstack;
312	PL_retstack_ix = c->retstack_ix;
313	PL_retstack_max = c->retstack_max;
314	#endif
315	PL_curpm = c->curpm;
316	PL_curcop = c->curcop;
317		316
318	if (c->defav) REPLACE_SV (GvAV (PL_defgv), c->defav);	317	if (c->defav) REPLACE_SV (GvAV (PL_defgv), c->defav);
319	if (c->defsv) REPLACE_SV (DEFSV , c->defsv);	318	if (c->defsv) REPLACE_SV (DEFSV , c->defsv);
320	if (c->errsv) REPLACE_SV (ERRSV , c->errsv);	319	if (c->errsv) REPLACE_SV (ERRSV , c->errsv);
		320	if (c->irssv)
		321	{
		322	if (c->irssv == PL_rs \|\| sv_eq (PL_rs, c->irssv))
		323	SvREFCNT_dec (c->irssv);
		324	else
		325	{
		326	REPLACE_SV (PL_rs, c->irssv);
		327	if (!c->irssv_sv) c->irssv_sv = get_sv ("/", 0);
		328	sv_setsv (c->irssv_sv, PL_rs);
		329	}
		330	}
321		331
322	{	332	{
323	dSP;	333	dSP;
324	CV *cv;	334	CV *cv;
325		335
326	/* now do the ugly restore mess */	336	/* now do the ugly restore mess */
327	while ((cv = (CV *)POPs))	337	while ((cv = (CV *)POPs))
328	{	338	{
329	AV padlist = (AV )POPs;
330
331	if (padlist)
332	{
333	put_padlist (cv); /* mark this padlist as available */	339	put_padlist (cv); /* mark this padlist as available */
334	CvPADLIST(cv) = padlist;	340	CvDEPTH (cv) = PTR2IV (POPs);
335	}	341	CvPADLIST (cv) = (AV *)POPs;
336
337	++CvDEPTH(cv);
338	}	342	}
339		343
340	PUTBACK;	344	PUTBACK;
341	}	345	}
342	}	346	}
343		347
344	static void	348	static void
345	save_state(Coro__State c, int flags)	349	save_perl (Coro__State c)
346	{	350	{
347	{	351	{
348	dSP;	352	dSP;
349	I32 cxix = cxstack_ix;	353	I32 cxix = cxstack_ix;
350	PERL_CONTEXT *ccstk = cxstack;	354	PERL_CONTEXT *ccstk = cxstack;
…		…
353	/*	357	/*
354	* the worst thing you can imagine happens first - we have to save	358	* the worst thing you can imagine happens first - we have to save
355	* (and reinitialize) all cv's in the whole callchain :(	359	* (and reinitialize) all cv's in the whole callchain :(
356	*/	360	*/
357		361
		362	EXTEND (SP, 3 + 1);
358	PUSHs (Nullsv);	363	PUSHs (Nullsv);
359	/* this loop was inspired by pp_caller */	364	/* this loop was inspired by pp_caller */
360	for (;;)	365	for (;;)
361	{	366	{
362	while (cxix >= 0)	367	while (cxix >= 0)
363	{	368	{
364	PERL_CONTEXT *cx = &ccstk[cxix--];	369	PERL_CONTEXT *cx = &ccstk[cxix--];
365		370
366	if (CxTYPE(cx) == CXt_SUB)	371	if (CxTYPE (cx) == CXt_SUB)
367	{	372	{
368	CV *cv = cx->blk_sub.cv;	373	CV *cv = cx->blk_sub.cv;
		374
369	if (CvDEPTH(cv))	375	if (CvDEPTH (cv))
370	{	376	{
371	EXTEND (SP, CvDEPTH(cv)*2);	377	EXTEND (SP, 3);
372
373	while (--CvDEPTH(cv))
374	{
375	/* this tells the restore code to increment CvDEPTH */
376	PUSHs (Nullsv);
377	PUSHs ((SV *)cv);
378	}
379
380	PUSHs ((SV *)CvPADLIST(cv));	378	PUSHs ((SV *)CvPADLIST (cv));
		379	PUSHs (INT2PTR (SV *, CvDEPTH (cv)));
381	PUSHs ((SV *)cv);	380	PUSHs ((SV *)cv);
382		381
		382	CvDEPTH (cv) = 0;
383	get_padlist (cv);	383	get_padlist (cv);
384	}	384	}
385	}	385	}
386	#ifdef CXt_FORMAT
387	else if (CxTYPE(cx) == CXt_FORMAT)
388	{
389	/* I never used formats, so how should I know how these are implemented? */
390	/* my bold guess is as a simple, plain sub... */
391	croak ("CXt_FORMAT not yet handled. Don't switch coroutines from within formats");
392	}
393	#endif
394	}	386	}
395		387
396	if (top_si->si_type == PERLSI_MAIN)	388	if (top_si->si_type == PERLSI_MAIN)
397	break;	389	break;
398		390
…		…
402	}	394	}
403		395
404	PUTBACK;	396	PUTBACK;
405	}	397	}
406		398
407	c->defav = flags & TRANSFER_SAVE_DEFAV ? (AV *)SvREFCNT_inc (GvAV (PL_defgv)) : 0;	399	c->defav = c->save & CORO_SAVE_DEFAV ? (AV *)SvREFCNT_inc (GvAV (PL_defgv)) : 0;
408	c->defsv = flags & TRANSFER_SAVE_DEFSV ? SvREFCNT_inc (DEFSV) : 0;	400	c->defsv = c->save & CORO_SAVE_DEFSV ? SvREFCNT_inc (DEFSV) : 0;
409	c->errsv = flags & TRANSFER_SAVE_ERRSV ? SvREFCNT_inc (ERRSV) : 0;	401	c->errsv = c->save & CORO_SAVE_ERRSV ? SvREFCNT_inc (ERRSV) : 0;
		402	c->irssv = c->save & CORO_SAVE_IRSSV ? SvREFCNT_inc (PL_rs) : 0;
410		403
411	c->dowarn = PL_dowarn;	404	#define VAR(name,type)c->name = PL_ ## name;
412	c->in_eval = PL_in_eval;	405	# include "state.h"
413		406	#undef VAR
414	c->curstackinfo = PL_curstackinfo;
415	c->curstack = PL_curstack;
416	c->mainstack = PL_mainstack;
417	c->stack_sp = PL_stack_sp;
418	c->op = PL_op;
419	c->curpad = PL_curpad;
420	c->comppad = PL_comppad;
421	c->compcv = PL_compcv;
422	c->stack_base = PL_stack_base;
423	c->stack_max = PL_stack_max;
424	c->tmps_stack = PL_tmps_stack;
425	c->tmps_floor = PL_tmps_floor;
426	c->tmps_ix = PL_tmps_ix;
427	c->tmps_max = PL_tmps_max;
428	c->markstack = PL_markstack;
429	c->markstack_ptr = PL_markstack_ptr;
430	c->markstack_max = PL_markstack_max;
431	c->scopestack = PL_scopestack;
432	c->scopestack_ix = PL_scopestack_ix;
433	c->scopestack_max = PL_scopestack_max;
434	c->savestack = PL_savestack;
435	c->savestack_ix = PL_savestack_ix;
436	c->savestack_max = PL_savestack_max;
437	#if !PERL_VERSION_ATLEAST (5,9,0)
438	c->retstack = PL_retstack;
439	c->retstack_ix = PL_retstack_ix;
440	c->retstack_max = PL_retstack_max;
441	#endif
442	c->curpm = PL_curpm;
443	c->curcop = PL_curcop;
444	}	407	}
445		408
446	/*	409	/*
447	* allocate various perl stacks. This is an exact copy	410	* allocate various perl stacks. This is an exact copy
448	* of perl.c:init_stacks, except that it uses less memory	411	* of perl.c:init_stacks, except that it uses less memory
449	* on the (sometimes correct) assumption that coroutines do	412	* on the (sometimes correct) assumption that coroutines do
450	* not usually need a lot of stackspace.	413	* not usually need a lot of stackspace.
451	*/	414	*/
		415	#if PREFER_PERL_FUNCTIONS
		416	# define coro_init_stacks init_stacks
		417	#else
452	static void	418	static void
453	coro_init_stacks ()	419	coro_init_stacks ()
454	{	420	{
455	PL_curstackinfo = new_stackinfo(96, 1024/sizeof(PERL_CONTEXT) - 1);	421	PL_curstackinfo = new_stackinfo(128, 1024/sizeof(PERL_CONTEXT));
456	PL_curstackinfo->si_type = PERLSI_MAIN;	422	PL_curstackinfo->si_type = PERLSI_MAIN;
457	PL_curstack = PL_curstackinfo->si_stack;	423	PL_curstack = PL_curstackinfo->si_stack;
458	PL_mainstack = PL_curstack; /* remember in case we switch stacks */	424	PL_mainstack = PL_curstack; /* remember in case we switch stacks */
459		425
460	PL_stack_base = AvARRAY(PL_curstack);	426	PL_stack_base = AvARRAY(PL_curstack);
461	PL_stack_sp = PL_stack_base;	427	PL_stack_sp = PL_stack_base;
462	PL_stack_max = PL_stack_base + AvMAX(PL_curstack);	428	PL_stack_max = PL_stack_base + AvMAX(PL_curstack);
463		429
464	New(50,PL_tmps_stack,96,SV*);	430	New(50,PL_tmps_stack,128,SV*);
465	PL_tmps_floor = -1;	431	PL_tmps_floor = -1;
466	PL_tmps_ix = -1;	432	PL_tmps_ix = -1;
467	PL_tmps_max = 96;	433	PL_tmps_max = 128;
468		434
469	New(54,PL_markstack,16,I32);	435	New(54,PL_markstack,32,I32);
470	PL_markstack_ptr = PL_markstack;	436	PL_markstack_ptr = PL_markstack;
471	PL_markstack_max = PL_markstack + 16;	437	PL_markstack_max = PL_markstack + 32;
472		438
473	#ifdef SET_MARK_OFFSET	439	#ifdef SET_MARK_OFFSET
474	SET_MARK_OFFSET;	440	SET_MARK_OFFSET;
475	#endif	441	#endif
476		442
477	New(54,PL_scopestack,16,I32);	443	New(54,PL_scopestack,32,I32);
478	PL_scopestack_ix = 0;	444	PL_scopestack_ix = 0;
479	PL_scopestack_max = 16;	445	PL_scopestack_max = 32;
480		446
481	New(54,PL_savestack,96,ANY);	447	New(54,PL_savestack,64,ANY);
482	PL_savestack_ix = 0;	448	PL_savestack_ix = 0;
483	PL_savestack_max = 96;	449	PL_savestack_max = 64;
484		450
485	#if !PERL_VERSION_ATLEAST (5,9,0)	451	#if !PERL_VERSION_ATLEAST (5,9,0)
486	New(54,PL_retstack,8,OP*);	452	New(54,PL_retstack,16,OP*);
487	PL_retstack_ix = 0;	453	PL_retstack_ix = 0;
488	PL_retstack_max = 8;	454	PL_retstack_max = 16;
489	#endif	455	#endif
490	}	456	}
		457	#endif
491		458
492	/*	459	/*
493	* destroy the stacks, the callchain etc...	460	* destroy the stacks, the callchain etc...
494	*/	461	*/
495	static void	462	static void
496	coro_destroy_stacks()	463	coro_destroy_stacks ()
497	{	464	{
498	if (!IN_DESTRUCT)	465	if (!IN_DESTRUCT)
499	{	466	{
500	/* is this ugly, I ask? */	467	/* restore all saved variables and stuff */
501	LEAVE_SCOPE (0);	468	LEAVE_SCOPE (0);
		469	assert (PL_tmps_floor == -1);
502		470
503	/* sure it is, but more important: is it correct?? :/ */	471	/* free all temporaries */
504	FREETMPS;	472	FREETMPS;
		473	assert (PL_tmps_ix == -1);
505		474
506	/POPSTACK_TO (PL_mainstack);//D//use/	475	POPSTACK_TO (PL_mainstack);
507	}	476	}
508		477
509	while (PL_curstackinfo->si_next)	478	while (PL_curstackinfo->si_next)
510	PL_curstackinfo = PL_curstackinfo->si_next;	479	PL_curstackinfo = PL_curstackinfo->si_next;
511		480
512	while (PL_curstackinfo)	481	while (PL_curstackinfo)
513	{	482	{
514	PERL_SI *p = PL_curstackinfo->si_prev;	483	PERL_SI *p = PL_curstackinfo->si_prev;
515		484
516	{ /D//remove/
517	dSP;
518	SWITCHSTACK (PL_curstack, PL_curstackinfo->si_stack);
519	PUTBACK; /* possibly superfluous */
520	}
521
522	if (!IN_DESTRUCT)	485	if (!IN_DESTRUCT)
523	{
524	dounwind (-1);/D//remove/
525	SvREFCNT_dec (PL_curstackinfo->si_stack);	486	SvREFCNT_dec (PL_curstackinfo->si_stack);
526	}
527		487
528	Safefree (PL_curstackinfo->si_cxstack);	488	Safefree (PL_curstackinfo->si_cxstack);
529	Safefree (PL_curstackinfo);	489	Safefree (PL_curstackinfo);
530	PL_curstackinfo = p;	490	PL_curstackinfo = p;
531	}	491	}
…		…
546	* emulate part of the perl startup here.	506	* emulate part of the perl startup here.
547	*/	507	*/
548		508
549	coro_init_stacks ();	509	coro_init_stacks ();
550		510
551	PL_curcop = 0;	511	PL_curcop = &PL_compiling;
552	PL_in_eval = 0;	512	PL_in_eval = EVAL_NULL;
553	PL_curpm = 0;	513	PL_curpm = 0;
		514	PL_localizing = 0;
		515	PL_dirty = 0;
		516	PL_restartop = 0;
554		517
555	{	518	{
556	dSP;	519	dSP;
557	LOGOP myop;	520	LOGOP myop;
558		521
559	/* I have no idea why this is needed, but it is */
560	PUSHMARK (SP);
561
562	SvREFCNT_dec (GvAV (PL_defgv));	522	SvREFCNT_dec (GvAV (PL_defgv));
563	GvAV (PL_defgv) = coro->args; coro->args = 0;	523	GvAV (PL_defgv) = coro->args; coro->args = 0;
564		524
565	Zero (&myop, 1, LOGOP);	525	Zero (&myop, 1, LOGOP);
566	myop.op_next = Nullop;	526	myop.op_next = Nullop;
567	myop.op_flags = OPf_WANT_VOID;	527	myop.op_flags = OPf_WANT_VOID;
568		528
		529	PUSHMARK (SP);
		530	XPUSHs ((SV *)get_cv ("Coro::State::_coro_init", FALSE));
		531	PUTBACK;
569	PL_op = (OP *)&myop;	532	PL_op = (OP *)&myop;
570
571	PUSHMARK (SP);
572	XPUSHs ((SV *)get_cv ("Coro::State::coro_init", FALSE));
573	PUTBACK;
574	PL_op = PL_ppaddr[OP_ENTERSUB](aTHX);	533	PL_op = PL_ppaddr[OP_ENTERSUB](aTHX);
575	SPAGAIN;	534	SPAGAIN;
576
577	ENTER; /* necessary e.g. for dounwind */
578	}	535	}
		536
		537	ENTER; /* necessary e.g. for dounwind */
579	}	538	}
580		539
581	static void	540	static void
582	free_coro_mortal ()	541	free_coro_mortal ()
583	{	542	{
…		…
586	SvREFCNT_dec (coro_mortal);	545	SvREFCNT_dec (coro_mortal);
587	coro_mortal = 0;	546	coro_mortal = 0;
588	}	547	}
589	}	548	}
590		549
		550	/* inject a fake call to Coro::State::_cctx_init into the execution */
591	static void NOINLINE	551	static void NOINLINE
592	prepare_cctx (coro_stack *cctx)	552	prepare_cctx (coro_cctx *cctx)
593	{	553	{
594	dSP;	554	dSP;
595	LOGOP myop;	555	LOGOP myop;
596		556
597	Zero (&myop, 1, LOGOP);	557	Zero (&myop, 1, LOGOP);
598	myop.op_next = PL_op;	558	myop.op_next = PL_op;
599	myop.op_flags = OPf_WANT_VOID;	559	myop.op_flags = OPf_WANT_VOID \| OPf_STACKED;
600
601	sv_setiv (get_sv ("Coro::State::cctx_stack", FALSE), PTR2IV (cctx));
602		560
603	PUSHMARK (SP);	561	PUSHMARK (SP);
		562	EXTEND (SP, 2);
		563	PUSHs (sv_2mortal (newSViv (PTR2IV (cctx))));
604	XPUSHs ((SV *)get_cv ("Coro::State::cctx_init", FALSE));	564	PUSHs ((SV *)get_cv ("Coro::State::_cctx_init", FALSE));
605	PUTBACK;	565	PUTBACK;
		566	PL_op = (OP *)&myop;
606	PL_restartop = PL_ppaddr[OP_ENTERSUB](aTHX);	567	PL_op = PL_ppaddr[OP_ENTERSUB](aTHX);
607	SPAGAIN;	568	SPAGAIN;
608	}	569	}
609		570
610	static void	571	static void
611	coro_run (void *arg)	572	coro_run (void *arg)
612	{	573	{
613	/* coro_run is the alternative epilogue of transfer() */	574	/* coro_run is the alternative tail of transfer(), so unlock here. */
614	UNLOCK;	575	UNLOCK;
615		576
616	/*	577	/*
617	* this is a _very_ stripped down perl interpreter ;)	578	* this is a _very_ stripped down perl interpreter ;)
618	*/	579	*/
619	PL_top_env = &PL_start_env;	580	PL_top_env = &PL_start_env;
		581
620	/* inject call to cctx_init */	582	/* inject call to cctx_init */
621	prepare_cctx ((coro_stack *)arg);	583	prepare_cctx ((coro_cctx *)arg);
622		584
623	/* somebody will hit me for both perl_run and PL_restartop */	585	/* somebody will hit me for both perl_run and PL_restartop */
		586	PL_restartop = PL_op;
624	perl_run (PL_curinterp);	587	perl_run (PL_curinterp);
625		588
626	fputs ("FATAL: C coroutine fell over the edge of the world, aborting.\n", stderr);	589	fputs ("FATAL: C coroutine fell over the edge of the world, aborting. Did you call exit in a coroutine?\n", stderr);
627	abort ();	590	abort ();
628	}	591	}
629		592
630	static coro_stack *	593	static coro_cctx *
631	stack_new ()	594	cctx_new ()
632	{	595	{
633	coro_stack *stack;	596	coro_cctx *cctx;
634		597
		598	++cctx_count;
		599
635	New (0, stack, 1, coro_stack);	600	Newz (0, cctx, 1, coro_cctx);
636		601
637	#if HAVE_MMAP	602	#if HAVE_MMAP
638		603
639	stack->ssize = ((STACKSIZE * sizeof (long) + PAGESIZE - 1) / PAGESIZE + STACKGUARD) * PAGESIZE;	604	cctx->ssize = ((STACKSIZE * sizeof (long) + PAGESIZE - 1) / PAGESIZE + STACKGUARD) * PAGESIZE;
640	/* mmap suppsedly does allocate-on-write for us */	605	/* mmap supposedly does allocate-on-write for us */
641	stack->sptr = mmap (0, stack->ssize, PROT_EXEC\|PROT_READ\|PROT_WRITE, MAP_PRIVATE\|MAP_ANONYMOUS, 0, 0);	606	cctx->sptr = mmap (0, cctx->ssize, PROT_EXEC\|PROT_READ\|PROT_WRITE, MAP_PRIVATE\|MAP_ANONYMOUS, 0, 0);
642		607
643	if (stack->sptr == (void *)-1)	608	if (cctx->sptr == (void *)-1)
644	{	609	{
645	perror ("FATAL: unable to mmap stack for coroutine");	610	perror ("FATAL: unable to mmap stack for coroutine");
646	_exit (EXIT_FAILURE);	611	_exit (EXIT_FAILURE);
647	}	612	}
648		613
649	# if STACKGUARD	614	# if STACKGUARD
650	mprotect (stack->sptr, STACKGUARD * PAGESIZE, PROT_NONE);	615	mprotect (cctx->sptr, STACKGUARD * PAGESIZE, PROT_NONE);
651	# endif	616	# endif
652		617
653	#else	618	#else
654		619
655	stack->ssize = STACKSIZE * (long)sizeof (long);	620	cctx->ssize = STACKSIZE * (long)sizeof (long);
656	New (0, stack->sptr, STACKSIZE, long);	621	New (0, cctx->sptr, STACKSIZE, long);
657		622
658	if (!stack->sptr)	623	if (!cctx->sptr)
659	{	624	{
660	perror (stderr, "FATAL: unable to malloc stack for coroutine");	625	perror ("FATAL: unable to malloc stack for coroutine");
661	_exit (EXIT_FAILURE);	626	_exit (EXIT_FAILURE);
662	}	627	}
663		628
664	#endif	629	#endif
665		630
		631	#if USE_VALGRIND
		632	cctx->valgrind_id = VALGRIND_STACK_REGISTER (
		633	STACKGUARD * PAGESIZE + (char *)cctx->sptr,
		634	cctx->ssize + (char *)cctx->sptr
		635	);
		636	#endif
		637
666	coro_create (&stack->cctx, coro_run, (void *)stack, stack->sptr, stack->ssize);	638	coro_create (&cctx->cctx, coro_run, (void *)cctx, cctx->sptr, cctx->ssize);
667		639
668	return stack;	640	return cctx;
669	}	641	}
670		642
671	static void	643	static void
672	stack_free (coro_stack *stack)	644	cctx_destroy (coro_cctx *cctx)
673	{	645	{
674	if (!stack)	646	if (!cctx)
675	return;	647	return;
676		648
		649	--cctx_count;
		650
		651	#if USE_VALGRIND
		652	VALGRIND_STACK_DEREGISTER (cctx->valgrind_id);
		653	#endif
		654
677	#if HAVE_MMAP	655	#if HAVE_MMAP
678	munmap (stack->sptr, stack->ssize);	656	munmap (cctx->sptr, cctx->ssize);
679	#else	657	#else
680	Safefree (stack->sptr);	658	Safefree (cctx->sptr);
681	#endif	659	#endif
682		660
683	Safefree (stack);	661	Safefree (cctx);
684	}	662	}
685		663
686	static coro_stack *stack_first;
687	static int cctx_count, cctx_idle;
688
689	static coro_stack *	664	static coro_cctx *
690	stack_get ()	665	cctx_get ()
691	{	666	{
692	coro_stack *stack;	667	coro_cctx *cctx;
693		668
694	if (stack_first)	669	if (cctx_first)
695	{	670	{
		671	cctx = cctx_first;
		672	cctx_first = cctx->next;
696	--cctx_idle;	673	--cctx_idle;
697	stack = stack_first;
698	stack_first = stack->next;
699	}	674	}
700	else	675	else
701	{	676	{
702	++cctx_count;	677	cctx = cctx_new ();
703	stack = stack_new ();
704	PL_op = PL_op->op_next;	678	PL_op = PL_op->op_next;
705	}	679	}
706		680
707	return stack;	681	return cctx;
708	}	682	}
709		683
710	static void	684	static void
711	stack_put (coro_stack *stack)	685	cctx_put (coro_cctx *cctx)
712	{	686	{
		687	/* free another cctx if overlimit */
		688	if (cctx_idle >= MAX_IDLE_CCTX)
		689	{
		690	coro_cctx *first = cctx_first;
		691	cctx_first = first->next;
		692	--cctx_idle;
		693
		694	assert (!first->inuse);
		695	cctx_destroy (first);
		696	}
		697
713	++cctx_idle;	698	++cctx_idle;
714	stack->next = stack_first;	699	cctx->next = cctx_first;
715	stack_first = stack;	700	cctx_first = cctx;
716	}	701	}
717		702
718	/* never call directly, always through the coro_state_transfer global variable */	703	/* never call directly, always through the coro_state_transfer global variable */
719	static void NOINLINE	704	static void NOINLINE
720	transfer (struct coro prev, struct coro next, int flags)	705	transfer (struct coro prev, struct coro next)
721	{	706	{
722	dSTACKLEVEL;	707	dSTACKLEVEL;
723		708
724	/* sometimes transfer is only called to set idle_sp */	709	/* sometimes transfer is only called to set idle_sp */
725	if (flags == TRANSFER_SET_STACKLEVEL)	710	if (!next)
		711	{
726	((coro_stack *)prev)->idle_sp = STACKLEVEL;	712	((coro_cctx *)prev)->idle_sp = STACKLEVEL;
		713	assert (((coro_cctx )prev)->top_env = PL_top_env); / just for the side effetc when assert is enabled */
		714	}
727	else if (prev != next)	715	else if (prev != next)
728	{	716	{
729	coro_stack *prev__stack;	717	coro_cctx *prev__cctx;
		718
		719	if (prev->flags & CF_NEW)
		720	{
		721	/* create a new empty context */
		722	Newz (0, prev->cctx, 1, coro_cctx);
		723	prev->cctx->inuse = 1;
		724	prev->flags &= ~CF_NEW;
		725	prev->flags \|= CF_RUNNING;
		726	}
		727
		728	/TODO: must not croak here /
		729	if (!prev->flags & CF_RUNNING)
		730	croak ("Coro::State::transfer called with non-running prev Coro::State, but can only transfer from running states");
		731
		732	if (next->flags & CF_RUNNING)
		733	croak ("Coro::State::transfer called with running next Coro::State, but can only transfer to inactive states");
		734
		735	prev->flags &= ~CF_RUNNING;
		736	next->flags \|= CF_RUNNING;
730		737
731	LOCK;	738	LOCK;
732		739
733	if (next->mainstack)	740	if (next->flags & CF_NEW)
734	{	741	{
735	/* coroutine already started */	742	/* need to start coroutine */
736	SAVE (prev, flags);	743	next->flags &= ~CF_NEW;
737	LOAD (next);	744	/* first get rid of the old state */
		745	save_perl (prev);
		746	/* setup coroutine call */
		747	setup_coro (next);
		748	/* need a new stack */
		749	assert (!next->cctx);
738	}	750	}
739	else	751	else
740	{	752	{
741	/* need to start coroutine */	753	/* coroutine already started */
742	/* first get rid of the old state */	754	save_perl (prev);
743	SAVE (prev, -1);	755	load_perl (next);
744	/* setup coroutine call */
745	setup_coro (next);
746	/* need a stack */
747	next->stack = 0;
748	}	756	}
749		757
750	if (!prev->stack)
751	/* create a new empty context */
752	Newz (0, prev->stack, 1, coro_stack);
753
754	prev__stack = prev->stack;	758	prev__cctx = prev->cctx;
755		759
756	/* possibly "free" the stack */	760	/* possibly "free" the cctx */
757	if (prev__stack->idle_sp == STACKLEVEL)	761	if (prev__cctx->idle_sp == STACKLEVEL)
758	{	762	{
759	stack_put (prev__stack);	763	/* I assume that STACKLEVEL is a stronger indicator than PL_top_env changes */
		764	assert (PL_top_env == prev__cctx->top_env);
		765
760	prev->stack = 0;	766	prev->cctx = 0;
		767
		768	cctx_put (prev__cctx);
		769	prev__cctx->inuse = 0;
761	}	770	}
762		771
763	if (!next->stack)	772	if (!next->cctx)
764	next->stack = stack_get ();
765
766	if (prev__stack != next->stack)
767	{	773	{
768	prev__stack->top_env = PL_top_env;	774	next->cctx = cctx_get ();
769	PL_top_env = next->stack->top_env;	775	assert (!next->cctx->inuse);
770	coro_transfer (&prev__stack->cctx, &next->stack->cctx);	776	next->cctx->inuse = 1;
771	}	777	}
772		778
		779	if (prev__cctx != next->cctx)
		780	{
		781	prev__cctx->top_env = PL_top_env;
		782	PL_top_env = next->cctx->top_env;
		783	coro_transfer (&prev__cctx->cctx, &next->cctx->cctx);
		784	}
		785
773	free_coro_mortal ();	786	free_coro_mortal ();
774		787
775	UNLOCK;	788	UNLOCK;
776	}	789	}
777	}	790	}
778		791
779	struct transfer_args	792	struct transfer_args
780	{	793	{
781	struct coro prev, next;	794	struct coro prev, next;
782	int flags;
783	};	795	};
784		796
785	#define TRANSFER(ta) transfer ((ta).prev, (ta).next, (ta).flags)	797	#define TRANSFER(ta) transfer ((ta).prev, (ta).next)
786		798
787	static void	799	static void
788	coro_state_destroy (struct coro *coro)	800	coro_state_destroy (struct coro *coro)
789	{	801	{
790	if (coro->refcnt--)	802	if (coro->refcnt--)
791	return;	803	return;
792		804
793	if (coro->mainstack && coro->mainstack != main_mainstack)	805	if (coro->mainstack && coro->mainstack != main_mainstack)
794	{	806	{
795	struct coro temp;	807	struct coro temp;
		808	Zero (&temp, 1, struct coro);
		809	temp.save = CORO_SAVE_ALL;
796		810
797	SAVE ((&temp), TRANSFER_SAVE_ALL);	811	if (coro->flags & CF_RUNNING)
798	LOAD (coro);	812	croak ("FATAL: tried to destroy currently running coroutine");
		813
		814	save_perl (&temp);
		815	load_perl (coro);
799		816
800	coro_destroy_stacks ();	817	coro_destroy_stacks ();
801		818
802	LOAD ((&temp)); /* this will get rid of defsv etc.. */	819	load_perl (&temp); /* this will get rid of defsv etc.. */
803		820
804	coro->mainstack = 0;	821	coro->mainstack = 0;
805	}	822	}
806		823
807	stack_free (coro->stack);	824	cctx_destroy (coro->cctx);
808	SvREFCNT_dec (coro->args);	825	SvREFCNT_dec (coro->args);
809	Safefree (coro);	826	Safefree (coro);
810	}	827	}
811		828
812	static int	829	static int
…		…
862	assert (mg->mg_type == PERL_MAGIC_ext);	879	assert (mg->mg_type == PERL_MAGIC_ext);
863	return (struct coro *)mg->mg_ptr;	880	return (struct coro *)mg->mg_ptr;
864	}	881	}
865		882
866	static void	883	static void
867	prepare_transfer (struct transfer_args ta, SV prev, SV *next, int flags)	884	prepare_transfer (struct transfer_args ta, SV prev_sv, SV *next_sv)
868	{	885	{
869	ta->prev = SvSTATE (prev);	886	ta->prev = SvSTATE (prev_sv);
870	ta->next = SvSTATE (next);	887	ta->next = SvSTATE (next_sv);
871	ta->flags = flags;
872	}	888	}
873		889
874	static void	890	static void
875	api_transfer (SV prev, SV next, int flags)	891	api_transfer (SV prev_sv, SV next_sv)
876	{	892	{
877	dTHX;
878	struct transfer_args ta;	893	struct transfer_args ta;
879		894
880	prepare_transfer (&ta, prev, next, flags);	895	prepare_transfer (&ta, prev_sv, next_sv);
881	TRANSFER (ta);	896	TRANSFER (ta);
		897	}
		898
		899	static int
		900	api_save (SV *coro_sv, int new_save)
		901	{
		902	struct coro *coro = SvSTATE (coro_sv);
		903	int old_save = coro->save;
		904
		905	if (new_save >= 0)
		906	coro->save = new_save;
		907
		908	return old_save;
882	}	909	}
883		910
884	/ Coro ******************************************************************/	911	/ Coro ******************************************************************/
885		912
886	#define PRIO_MAX 3	913	#define PRIO_MAX 3
…		…
889	#define PRIO_LOW -1	916	#define PRIO_LOW -1
890	#define PRIO_IDLE -3	917	#define PRIO_IDLE -3
891	#define PRIO_MIN -4	918	#define PRIO_MIN -4
892		919
893	/* for Coro.pm */	920	/* for Coro.pm */
894	static GV coro_current, coro_idle;	921	static SV *coro_current;
895	static AV *coro_ready [PRIO_MAX-PRIO_MIN+1];	922	static AV *coro_ready [PRIO_MAX-PRIO_MIN+1];
896	static int coro_nready;	923	static int coro_nready;
897		924
898	static void	925	static void
899	coro_enq (SV *sv)	926	coro_enq (SV *coro_sv)
900	{	927	{
901	int prio;
902
903	if (SvTYPE (sv) != SVt_PVHV)
904	croak ("Coro::ready tried to enqueue something that is not a coroutine");
905
906	prio = SvSTATE (sv)->prio;
907
908	av_push (coro_ready [prio - PRIO_MIN], sv);	928	av_push (coro_ready [SvSTATE (coro_sv)->prio - PRIO_MIN], coro_sv);
909	coro_nready++;	929	coro_nready++;
910	}	930	}
911		931
912	static SV *	932	static SV *
913	coro_deq (int min_prio)	933	coro_deq (int min_prio)
…		…
926	}	946	}
927		947
928	return 0;	948	return 0;
929	}	949	}
930		950
931	static void	951	static int
932	api_ready (SV *coro)	952	api_ready (SV *coro_sv)
933	{	953	{
934	dTHX;	954	struct coro *coro;
935		955
936	if (SvROK (coro))	956	if (SvROK (coro_sv))
937	coro = SvRV (coro);	957	coro_sv = SvRV (coro_sv);
		958
		959	coro = SvSTATE (coro_sv);
		960
		961	if (coro->flags & CF_READY)
		962	return 0;
		963
		964	coro->flags \|= CF_READY;
938		965
939	LOCK;	966	LOCK;
940	coro_enq (SvREFCNT_inc (coro));	967	coro_enq (SvREFCNT_inc (coro_sv));
941	UNLOCK;	968	UNLOCK;
		969
		970	return 1;
		971	}
		972
		973	static int
		974	api_is_ready (SV *coro_sv)
		975	{
		976	return !!(SvSTATE (coro_sv)->flags & CF_READY);
942	}	977	}
943		978
944	static void	979	static void
945	prepare_schedule (struct transfer_args *ta)	980	prepare_schedule (struct transfer_args *ta)
946	{	981	{
947	SV current, prev, *next;	982	SV prev, next;
948
949	current = GvSV (coro_current);
950		983
951	for (;;)	984	for (;;)
952	{	985	{
953	LOCK;	986	LOCK;
954	next = coro_deq (PRIO_MIN);	987	next = coro_deq (PRIO_MIN);
…		…
963	ENTER;	996	ENTER;
964	SAVETMPS;	997	SAVETMPS;
965		998
966	PUSHMARK (SP);	999	PUSHMARK (SP);
967	PUTBACK;	1000	PUTBACK;
968	call_sv (GvSV (coro_idle), G_DISCARD);	1001	call_sv (get_sv ("Coro::idle", FALSE), G_DISCARD);
969		1002
970	FREETMPS;	1003	FREETMPS;
971	LEAVE;	1004	LEAVE;
972	}	1005	}
973	}	1006	}
974		1007
975	prev = SvRV (current);	1008	prev = SvRV (coro_current);
976	SvRV (current) = next;	1009	SvRV_set (coro_current, next);
977		1010
978	/* free this only after the transfer */	1011	/* free this only after the transfer */
979	LOCK;	1012	LOCK;
980	free_coro_mortal ();	1013	free_coro_mortal ();
981	UNLOCK;	1014	UNLOCK;
982	coro_mortal = prev;	1015	coro_mortal = prev;
983		1016
		1017	assert (!SvROK(prev));//D
		1018	assert (!SvROK(next));//D
		1019
984	ta->prev = SvSTATE (prev);	1020	ta->prev = SvSTATE (prev);
985	ta->next = SvSTATE (next);	1021	ta->next = SvSTATE (next);
986	ta->flags = TRANSFER_SAVE_ALL;	1022
		1023	assert (ta->next->flags & CF_READY);
		1024	ta->next->flags &= ~CF_READY;
987	}	1025	}
988		1026
989	static void	1027	static void
990	prepare_cede (struct transfer_args *ta)	1028	prepare_cede (struct transfer_args *ta)
991	{	1029	{
992	LOCK;	1030	api_ready (coro_current);
993	coro_enq (SvREFCNT_inc (SvRV (GvSV (coro_current))));
994	UNLOCK;
995
996	prepare_schedule (ta);	1031	prepare_schedule (ta);
997	}	1032	}
998		1033
		1034	static int
		1035	prepare_cede_notself (struct transfer_args *ta)
		1036	{
		1037	if (coro_nready)
		1038	{
		1039	SV *prev = SvRV (coro_current);
		1040	prepare_schedule (ta);
		1041	api_ready (prev);
		1042	return 1;
		1043	}
		1044	else
		1045	return 0;
		1046	}
		1047
999	static void	1048	static void
1000	api_schedule (void)	1049	api_schedule (void)
1001	{	1050	{
1002	dTHX;
1003	struct transfer_args ta;	1051	struct transfer_args ta;
1004		1052
1005	prepare_schedule (&ta);	1053	prepare_schedule (&ta);
1006	TRANSFER (ta);	1054	TRANSFER (ta);
1007	}	1055	}
1008		1056
1009	static void	1057	static int
1010	api_cede (void)	1058	api_cede (void)
1011	{	1059	{
1012	dTHX;
1013	struct transfer_args ta;	1060	struct transfer_args ta;
1014		1061
1015	prepare_cede (&ta);	1062	prepare_cede (&ta);
		1063
		1064	if (ta.prev != ta.next)
		1065	{
1016	TRANSFER (ta);	1066	TRANSFER (ta);
		1067	return 1;
		1068	}
		1069	else
		1070	return 0;
		1071	}
		1072
		1073	static int
		1074	api_cede_notself (void)
		1075	{
		1076	struct transfer_args ta;
		1077
		1078	if (prepare_cede_notself (&ta))
		1079	{
		1080	TRANSFER (ta);
		1081	return 1;
		1082	}
		1083	else
		1084	return 0;
1017	}	1085	}
1018		1086
1019	MODULE = Coro::State PACKAGE = Coro::State	1087	MODULE = Coro::State PACKAGE = Coro::State
1020		1088
1021	PROTOTYPES: DISABLE	1089	PROTOTYPES: DISABLE
…		…
1027	#endif	1095	#endif
1028	BOOT_PAGESIZE;	1096	BOOT_PAGESIZE;
1029		1097
1030	coro_state_stash = gv_stashpv ("Coro::State", TRUE);	1098	coro_state_stash = gv_stashpv ("Coro::State", TRUE);
1031		1099
1032	newCONSTSUB (coro_state_stash, "SAVE_DEFAV", newSViv (TRANSFER_SAVE_DEFAV));	1100	newCONSTSUB (coro_state_stash, "SAVE_DEFAV", newSViv (CORO_SAVE_DEFAV));
1033	newCONSTSUB (coro_state_stash, "SAVE_DEFSV", newSViv (TRANSFER_SAVE_DEFSV));	1101	newCONSTSUB (coro_state_stash, "SAVE_DEFSV", newSViv (CORO_SAVE_DEFSV));
1034	newCONSTSUB (coro_state_stash, "SAVE_ERRSV", newSViv (TRANSFER_SAVE_ERRSV));	1102	newCONSTSUB (coro_state_stash, "SAVE_ERRSV", newSViv (CORO_SAVE_ERRSV));
		1103	newCONSTSUB (coro_state_stash, "SAVE_IRSSV", newSViv (CORO_SAVE_IRSSV));
		1104	newCONSTSUB (coro_state_stash, "SAVE_ALL", newSViv (CORO_SAVE_ALL));
1035		1105
1036	main_mainstack = PL_mainstack;	1106	main_mainstack = PL_mainstack;
1037		1107
1038	coroapi.ver = CORO_API_VERSION;	1108	coroapi.ver = CORO_API_VERSION;
1039	coroapi.transfer = api_transfer;	1109	coroapi.transfer = api_transfer;
…		…
1049	HV *hv;	1119	HV *hv;
1050	int i;	1120	int i;
1051		1121
1052	Newz (0, coro, 1, struct coro);	1122	Newz (0, coro, 1, struct coro);
1053	coro->args = newAV ();	1123	coro->args = newAV ();
		1124	coro->save = CORO_SAVE_ALL;
		1125	coro->flags = CF_NEW;
1054		1126
1055	hv = newHV ();	1127	hv = newHV ();
1056	sv_magicext ((SV )hv, 0, PERL_MAGIC_ext, &coro_state_vtbl, (char )coro, 0)->mg_flags \|= MGf_DUP;	1128	sv_magicext ((SV )hv, 0, PERL_MAGIC_ext, &coro_state_vtbl, (char )coro, 0)->mg_flags \|= MGf_DUP;
1057	RETVAL = sv_bless (newRV_noinc ((SV *)hv), gv_stashpv (klass, 1));	1129	RETVAL = sv_bless (newRV_noinc ((SV *)hv), gv_stashpv (klass, 1));
1058		1130
1059	for (i = 1; i < items; i++)	1131	for (i = 1; i < items; i++)
1060	av_push (coro->args, newSVsv (ST (i)));	1132	av_push (coro->args, newSVsv (ST (i)));
1061
1062	/coro->mainstack = 0; //actual work is done inside transfer /
1063	/coro->stack = 0;/
1064	}	1133	}
1065	OUTPUT:	1134	OUTPUT:
		1135	RETVAL
		1136
		1137	int
		1138	save (SV *coro, int new_save = -1)
		1139	CODE:
		1140	RETVAL = api_save (coro, new_save);
		1141	OUTPUT:
1066	RETVAL	1142	RETVAL
1067		1143
1068	void	1144	void
1069	_set_stacklevel (...)	1145	_set_stacklevel (...)
1070	ALIAS:	1146	ALIAS:
1071	Coro::State::transfer = 1	1147	Coro::State::transfer = 1
1072	Coro::schedule = 2	1148	Coro::schedule = 2
1073	Coro::cede = 3	1149	Coro::cede = 3
1074	Coro::Cont::yield = 4	1150	Coro::cede_notself = 4
1075	CODE:	1151	CODE:
1076	{	1152	{
1077	struct transfer_args ta;	1153	struct transfer_args ta;
1078		1154
1079	switch (ix)	1155	switch (ix)
1080	{	1156	{
1081	case 0:	1157	case 0:
1082	ta.prev = (struct coro )INT2PTR (coro_stack , SvIV (ST (0)));	1158	ta.prev = (struct coro )INT2PTR (coro_cctx , SvIV (ST (0)));
1083	ta.next = 0;	1159	ta.next = 0;
1084	ta.flags = TRANSFER_SET_STACKLEVEL;
1085	break;	1160	break;
1086		1161
1087	case 1:	1162	case 1:
1088	if (items != 3)	1163	if (items != 2)
1089	croak ("Coro::State::transfer(prev,next,flags) expects three arguments, not %d", items);	1164	croak ("Coro::State::transfer (prev,next) expects two arguments, not %d", items);
1090		1165
1091	prepare_transfer (&ta, ST (0), ST (1), SvIV (ST (2)));	1166	prepare_transfer (&ta, ST (0), ST (1));
1092	break;	1167	break;
1093		1168
1094	case 2:	1169	case 2:
1095	prepare_schedule (&ta);	1170	prepare_schedule (&ta);
1096	break;	1171	break;
…		…
1098	case 3:	1173	case 3:
1099	prepare_cede (&ta);	1174	prepare_cede (&ta);
1100	break;	1175	break;
1101		1176
1102	case 4:	1177	case 4:
1103	{	1178	if (!prepare_cede_notself (&ta))
1104	SV *yieldstack;	1179	XSRETURN_EMPTY;
1105	SV *sv;
1106	AV *defav = GvAV (PL_defgv);
1107		1180
1108	yieldstack = *hv_fetch (
1109	(HV *)SvRV (GvSV (coro_current)),
1110	"yieldstack", sizeof ("yieldstack") - 1,
1111	0
1112	);
1113
1114	/* set up @_ -- ugly */
1115	av_clear (defav);
1116	av_fill (defav, items - 1);
1117	while (items--)
1118	av_store (defav, items, SvREFCNT_inc (ST(items)));
1119
1120	sv = av_pop ((AV *)SvRV (yieldstack));
1121	ta.prev = SvSTATE (av_fetch ((AV )SvRV (sv), 0, 0));
1122	ta.next = SvSTATE (av_fetch ((AV )SvRV (sv), 1, 0));
1123	ta.flags = 0;
1124	SvREFCNT_dec (sv);
1125	}
1126	break;	1181	break;
1127
1128	}	1182	}
1129		1183
		1184	BARRIER;
1130	TRANSFER (ta);	1185	TRANSFER (ta);
1131	}	1186	}
1132		1187
1133	void	1188	void
1134	_clone_state_from (SV dst, SV src)	1189	_clone_state_from (SV dst, SV src)
…		…
1147	int code	1202	int code
1148	PROTOTYPE: $	1203	PROTOTYPE: $
1149	CODE:	1204	CODE:
1150	_exit (code);	1205	_exit (code);
1151		1206
		1207	int
		1208	cctx_count ()
		1209	CODE:
		1210	RETVAL = cctx_count;
		1211	OUTPUT:
		1212	RETVAL
		1213
		1214	int
		1215	cctx_idle ()
		1216	CODE:
		1217	RETVAL = cctx_idle;
		1218	OUTPUT:
		1219	RETVAL
		1220
1152	MODULE = Coro::State PACKAGE = Coro	1221	MODULE = Coro::State PACKAGE = Coro
1153		1222
1154	BOOT:	1223	BOOT:
1155	{	1224	{
1156	int i;	1225	int i;
…		…
1162	newCONSTSUB (coro_stash, "PRIO_NORMAL", newSViv (PRIO_NORMAL));	1231	newCONSTSUB (coro_stash, "PRIO_NORMAL", newSViv (PRIO_NORMAL));
1163	newCONSTSUB (coro_stash, "PRIO_LOW", newSViv (PRIO_LOW));	1232	newCONSTSUB (coro_stash, "PRIO_LOW", newSViv (PRIO_LOW));
1164	newCONSTSUB (coro_stash, "PRIO_IDLE", newSViv (PRIO_IDLE));	1233	newCONSTSUB (coro_stash, "PRIO_IDLE", newSViv (PRIO_IDLE));
1165	newCONSTSUB (coro_stash, "PRIO_MIN", newSViv (PRIO_MIN));	1234	newCONSTSUB (coro_stash, "PRIO_MIN", newSViv (PRIO_MIN));
1166		1235
1167	coro_current = gv_fetchpv ("Coro::current", TRUE, SVt_PV);	1236	coro_current = get_sv ("Coro::current", FALSE);
1168	coro_idle = gv_fetchpv ("Coro::idle" , TRUE, SVt_PV);	1237	SvREADONLY_on (coro_current);
1169		1238
1170	for (i = PRIO_MAX - PRIO_MIN + 1; i--; )	1239	for (i = PRIO_MAX - PRIO_MIN + 1; i--; )
1171	coro_ready[i] = newAV ();	1240	coro_ready[i] = newAV ();
1172		1241
1173	{	1242	{
1174	SV *sv = perl_get_sv("Coro::API", 1);	1243	SV *sv = perl_get_sv("Coro::API", 1);
1175		1244
1176	coroapi.schedule = api_schedule;	1245	coroapi.schedule = api_schedule;
		1246	coroapi.save = api_save;
1177	coroapi.cede = api_cede;	1247	coroapi.cede = api_cede;
		1248	coroapi.cede_notself = api_cede_notself;
1178	coroapi.ready = api_ready;	1249	coroapi.ready = api_ready;
		1250	coroapi.is_ready = api_is_ready;
1179	coroapi.nready = &coro_nready;	1251	coroapi.nready = &coro_nready;
1180	coroapi.current = coro_current;	1252	coroapi.current = coro_current;
1181		1253
1182	GCoroAPI = &coroapi;	1254	GCoroAPI = &coroapi;
1183	sv_setiv (sv, (IV)&coroapi);	1255	sv_setiv (sv, (IV)&coroapi);
1184	SvREADONLY_on (sv);	1256	SvREADONLY_on (sv);
1185	}	1257	}
1186	}	1258	}
		1259
		1260	void
		1261	_set_current (SV *current)
		1262	PROTOTYPE: $
		1263	CODE:
		1264	SvREFCNT_dec (SvRV (coro_current));
		1265	SvRV_set (coro_current, SvREFCNT_inc (SvRV (current)));
1187		1266
1188	int	1267	int
1189	prio (Coro::State coro, int newprio = 0)	1268	prio (Coro::State coro, int newprio = 0)
1190	ALIAS:	1269	ALIAS:
1191	nice = 1	1270	nice = 1
…		…
1194	RETVAL = coro->prio;	1273	RETVAL = coro->prio;
1195		1274
1196	if (items > 1)	1275	if (items > 1)
1197	{	1276	{
1198	if (ix)	1277	if (ix)
1199	newprio += coro->prio;	1278	newprio = coro->prio - newprio;
1200		1279
1201	if (newprio < PRIO_MIN) newprio = PRIO_MIN;	1280	if (newprio < PRIO_MIN) newprio = PRIO_MIN;
1202	if (newprio > PRIO_MAX) newprio = PRIO_MAX;	1281	if (newprio > PRIO_MAX) newprio = PRIO_MAX;
1203		1282
1204	coro->prio = newprio;	1283	coro->prio = newprio;
1205	}	1284	}
1206	}	1285	}
		1286	OUTPUT:
		1287	RETVAL
1207		1288
1208	void	1289	SV *
1209	ready (SV *self)	1290	ready (SV *self)
1210	PROTOTYPE: $	1291	PROTOTYPE: $
1211	CODE:	1292	CODE:
1212	api_ready (self);	1293	RETVAL = boolSV (api_ready (self));
		1294	OUTPUT:
		1295	RETVAL
		1296
		1297	SV *
		1298	is_ready (SV *self)
		1299	PROTOTYPE: $
		1300	CODE:
		1301	RETVAL = boolSV (api_is_ready (self));
		1302	OUTPUT:
		1303	RETVAL
1213		1304
1214	int	1305	int
1215	nready (...)	1306	nready (...)
1216	PROTOTYPE:	1307	PROTOTYPE:
1217	CODE:	1308	CODE:
…		…
1223		1314
1224	SV *	1315	SV *
1225	_get_state ()	1316	_get_state ()
1226	CODE:	1317	CODE:
1227	{	1318	{
1228	struct {	1319	struct io_state *data;
1229	int errorno;
1230	int laststype;
1231	int laststatval;
1232	Stat_t statcache;
1233	} data;
1234		1320
		1321	RETVAL = newSV (sizeof (struct io_state));
		1322	data = (struct io_state *)SvPVX (RETVAL);
		1323	SvCUR_set (RETVAL, sizeof (struct io_state));
		1324	SvPOK_only (RETVAL);
		1325
1235	data.errorno = errno;	1326	data->errorno = errno;
1236	data.laststype = PL_laststype;	1327	data->laststype = PL_laststype;
1237	data.laststatval = PL_laststatval;	1328	data->laststatval = PL_laststatval;
1238	data.statcache = PL_statcache;	1329	data->statcache = PL_statcache;
1239
1240	RETVAL = newSVpvn ((char *)&data, sizeof data);
1241	}	1330	}
1242	OUTPUT:	1331	OUTPUT:
1243	RETVAL	1332	RETVAL
1244		1333
1245	void	1334	void
1246	_set_state (char *data_)	1335	_set_state (char *data_)
1247	PROTOTYPE: $	1336	PROTOTYPE: $
1248	CODE:	1337	CODE:
1249	{	1338	{
1250	struct {	1339	struct io_state data = (void )data_;
1251	int errorno;
1252	int laststype;
1253	int laststatval;
1254	Stat_t statcache;
1255	} data = (void )data_;
1256		1340
1257	errno = data->errorno;	1341	errno = data->errorno;
1258	PL_laststype = data->laststype;	1342	PL_laststype = data->laststype;
1259	PL_laststatval = data->laststatval;	1343	PL_laststatval = data->laststatval;
1260	PL_statcache = data->statcache;	1344	PL_statcache = data->statcache;
1261	}	1345	}
		1346

Diff Legend

-–
+Removed lines
-+
+Added lines
-<
+Changed lines
->
+Changed lines

Comparing Coro/Coro/State.xs (file contents): Revision 1.103 by root, Mon Nov 27 01:33:30 2006 UTC vs. Revision 1.131 by root, Fri Dec 29 11:37:49 2006 UTC

Diff Legend

Comparing Coro/Coro/State.xs (file contents):
Revision 1.103 by root, Mon Nov 27 01:33:30 2006 UTC vs.
Revision 1.131 by root, Fri Dec 29 11:37:49 2006 UTC