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

Comparing Coro/Coro/State.xs (file contents):
Revision 1.104 by root, Mon Nov 27 01:51:02 2006 UTC vs.
Revision 1.130 by root, Mon Dec 25 13:25:55 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. */
…		…
83	#endif	100	#endif
84		101
85	#define NOINLINE attribute ((noinline))	102	#define NOINLINE attribute ((noinline))
86		103
87	#include "CoroAPI.h"	104	#include "CoroAPI.h"
88
89	#define TRANSFER_SET_STACKLEVEL 0x8bfbfbfb /* magic cookie */
90		105
91	#ifdef USE_ITHREADS	106	#ifdef USE_ITHREADS
92	static perl_mutex coro_mutex;	107	static perl_mutex coro_mutex;
93	# define LOCK do { MUTEX_LOCK (&coro_mutex); } while (0)	108	# define LOCK do { MUTEX_LOCK (&coro_mutex); } while (0)
94	# define UNLOCK do { MUTEX_UNLOCK (&coro_mutex); } while (0)	109	# define UNLOCK do { MUTEX_UNLOCK (&coro_mutex); } while (0)
95	#else	110	#else
96	# define LOCK (void)0	111	# define LOCK (void)0
97	# define UNLOCK (void)0	112	# define UNLOCK (void)0
98	#endif	113	#endif
99		114
		115	struct io_state
		116	{
		117	int errorno;
		118	I32 laststype;
		119	int laststatval;
		120	Stat_t statcache;
		121	};
		122
100	static struct CoroAPI coroapi;	123	static struct CoroAPI coroapi;
101	static AV main_mainstack; / used to differentiate between $main and others */	124	static AV main_mainstack; / used to differentiate between $main and others */
102	static HV coro_state_stash, coro_stash;	125	static HV coro_state_stash, coro_stash;
103	static SV coro_mortal; / will be freed after next transfer */	126	static SV coro_mortal; / will be freed after next transfer */
104		127
		128	static struct coro_cctx *cctx_first;
		129	static int cctx_count, cctx_idle;
		130
105	/* this is a structure representing a c-level coroutine */	131	/* this is a structure representing a c-level coroutine */
106	typedef struct coro_stack {	132	typedef struct coro_cctx {
107	struct coro_stack *next;	133	struct coro_cctx *next;
108		134
109	/* the stack */	135	/* the stack */
110	void *sptr;	136	void *sptr;
111	long ssize; /* positive == mmap, otherwise malloc */	137	long ssize; /* positive == mmap, otherwise malloc */
112		138
113	/* cpu state */	139	/* cpu state */
114	void idle_sp; / sp of top-level transfer/schedule/cede call */	140	void idle_sp; / sp of top-level transfer/schedule/cede call */
115	JMPENV *top_env;	141	JMPENV *top_env;
116	coro_context cctx;	142	coro_context cctx;
117		143
		144	int inuse;
		145
118	#if USE_VALGRIND	146	#if USE_VALGRIND
119	int valgrind_id;	147	int valgrind_id;
120	#endif	148	#endif
121	} coro_stack;	149	} coro_cctx;
		150
		151	enum {
		152	CF_RUNNING = 0x0001, /* coroutine is running */
		153	CF_READY = 0x0002, /* coroutine is ready */
		154	CF_NEW = 0x0004, /* ahs never been switched to */
		155	};
122		156
123	/* this is a structure representing a perl-level coroutine */	157	/* this is a structure representing a perl-level coroutine */
124	struct coro {	158	struct coro {
125	/* the c coroutine allocated to this perl coroutine, if any */	159	/* the c coroutine allocated to this perl coroutine, if any */
126	coro_stack *stack;	160	coro_cctx *cctx;
127		161
128	/* data associated with this coroutine (initial args) */	162	/* data associated with this coroutine (initial args) */
129	AV *args;	163	AV *args;
130	int refcnt;	164	int refcnt;
		165	int save; /* CORO_SAVE flags */
		166	int flags; /* CF_ flags */
131		167
132	/* optionally saved, might be zero */	168	/* optionally saved, might be zero */
133	AV *defav;	169	AV defav; / @_ */
134	SV *defsv;	170	SV defsv; / $_ */
135	SV *errsv;	171	SV errsv; / $@ */
		172	SV irssv; / $/ */
		173	SV irssv_sv; / real $/ cache */
136		174
137	/* saved global state not related to stacks */	175	#define VAR(name,type) type name;
138	U8 dowarn;	176	# include "state.h"
139	I32 in_eval;	177	#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		178
171	/* coro process data */	179	/* coro process data */
172	int prio;	180	int prio;
173	};	181	};
174		182
…		…
238		246
239	#define PERL_MAGIC_coro PERL_MAGIC_ext	247	#define PERL_MAGIC_coro PERL_MAGIC_ext
240		248
241	static MGVTBL vtbl_coro = {0, 0, 0, 0, coro_cv_free};	249	static MGVTBL vtbl_coro = {0, 0, 0, 0, coro_cv_free};
242		250
		251	#define CORO_MAGIC(cv) \
		252	SvMAGIC (cv) \
		253	? SvMAGIC (cv)->mg_type == PERL_MAGIC_coro \
		254	? SvMAGIC (cv) \
		255	: mg_find ((SV *)cv, PERL_MAGIC_coro) \
		256	: 0
		257
243	/* the next two functions merely cache the padlists */	258	/* the next two functions merely cache the padlists */
244	static void	259	static void
245	get_padlist (CV *cv)	260	get_padlist (CV *cv)
246	{	261	{
247	MAGIC mg = mg_find ((SV )cv, PERL_MAGIC_coro);	262	MAGIC *mg = CORO_MAGIC (cv);
		263	AV *av;
248		264
249	if (mg && AvFILLp ((AV *)mg->mg_obj) >= 0)	265	if (mg && AvFILLp ((av = (AV *)mg->mg_obj)) >= 0)
250	CvPADLIST (cv) = (AV )av_pop ((AV )mg->mg_obj);	266	CvPADLIST (cv) = (AV *)AvARRAY (av)[AvFILLp (av)--];
251	else	267	else
252	{	268	{
253	#if 0	269	#if PREFER_PERL_FUNCTIONS
254	/* this is probably cleaner, but also slower? */	270	/* this is probably cleaner, but also slower? */
255	CV *cp = Perl_cv_clone (cv);	271	CV *cp = Perl_cv_clone (cv);
256	CvPADLIST (cv) = CvPADLIST (cp);	272	CvPADLIST (cv) = CvPADLIST (cp);
257	CvPADLIST (cp) = 0;	273	CvPADLIST (cp) = 0;
258	SvREFCNT_dec (cp);	274	SvREFCNT_dec (cp);
…		…
263	}	279	}
264		280
265	static void	281	static void
266	put_padlist (CV *cv)	282	put_padlist (CV *cv)
267	{	283	{
268	MAGIC mg = mg_find ((SV )cv, PERL_MAGIC_coro);	284	MAGIC *mg = CORO_MAGIC (cv);
		285	AV *av;
269		286
270	if (!mg)	287	if (!mg)
271	{	288	{
272	sv_magic ((SV *)cv, 0, PERL_MAGIC_coro, 0, 0);	289	sv_magic ((SV *)cv, 0, PERL_MAGIC_coro, 0, 0);
273	mg = mg_find ((SV *)cv, PERL_MAGIC_coro);	290	mg = mg_find ((SV *)cv, PERL_MAGIC_coro);
274	mg->mg_virtual = &vtbl_coro;	291	mg->mg_virtual = &vtbl_coro;
275	mg->mg_obj = (SV *)newAV ();	292	mg->mg_obj = (SV *)newAV ();
276	}	293	}
277		294
278	av_push ((AV )mg->mg_obj, (SV )CvPADLIST (cv));	295	av = (AV *)mg->mg_obj;
		296
		297	if (AvFILLp (av) >= AvMAX (av))
		298	av_extend (av, AvMAX (av) + 1);
		299
		300	AvARRAY (av)[++AvFILLp (av)] = (SV *)CvPADLIST (cv);
279	}	301	}
280		302
281	#define SB do {	303	#define SB do {
282	#define SE } while (0)	304	#define SE } while (0)
283		305
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	306	#define REPLACE_SV(sv,val) SB SvREFCNT_dec (sv); (sv) = (val); (val) = 0; SE
288		307
289	static void	308	static void
290	load_state(Coro__State c)	309	load_perl (Coro__State c)
291	{	310	{
292	PL_dowarn = c->dowarn;	311	#define VAR(name,type) PL_ ## name = c->name;
293	PL_in_eval = c->in_eval;	312	# include "state.h"
294		313	#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		314
326	if (c->defav) REPLACE_SV (GvAV (PL_defgv), c->defav);	315	if (c->defav) REPLACE_SV (GvAV (PL_defgv), c->defav);
327	if (c->defsv) REPLACE_SV (DEFSV , c->defsv);	316	if (c->defsv) REPLACE_SV (DEFSV , c->defsv);
328	if (c->errsv) REPLACE_SV (ERRSV , c->errsv);	317	if (c->errsv) REPLACE_SV (ERRSV , c->errsv);
		318	if (c->irssv)
		319	{
		320	if (c->irssv == PL_rs \|\| sv_eq (PL_rs, c->irssv))
		321	SvREFCNT_dec (c->irssv);
		322	else
		323	{
		324	REPLACE_SV (PL_rs, c->irssv);
		325	if (!c->irssv_sv) c->irssv_sv = get_sv ("/", 0);
		326	sv_setsv (c->irssv_sv, PL_rs);
		327	}
		328	}
329		329
330	{	330	{
331	dSP;	331	dSP;
332	CV *cv;	332	CV *cv;
333		333
334	/* now do the ugly restore mess */	334	/* now do the ugly restore mess */
335	while ((cv = (CV *)POPs))	335	while ((cv = (CV *)POPs))
336	{	336	{
337	AV padlist = (AV )POPs;
338
339	if (padlist)
340	{
341	put_padlist (cv); /* mark this padlist as available */	337	put_padlist (cv); /* mark this padlist as available */
342	CvPADLIST(cv) = padlist;	338	CvDEPTH (cv) = PTR2IV (POPs);
343	}	339	CvPADLIST (cv) = (AV *)POPs;
344
345	++CvDEPTH(cv);
346	}	340	}
347		341
348	PUTBACK;	342	PUTBACK;
349	}	343	}
350	}	344	}
351		345
352	static void	346	static void
353	save_state(Coro__State c, int flags)	347	save_perl (Coro__State c)
354	{	348	{
355	{	349	{
356	dSP;	350	dSP;
357	I32 cxix = cxstack_ix;	351	I32 cxix = cxstack_ix;
358	PERL_CONTEXT *ccstk = cxstack;	352	PERL_CONTEXT *ccstk = cxstack;
…		…
361	/*	355	/*
362	* the worst thing you can imagine happens first - we have to save	356	* the worst thing you can imagine happens first - we have to save
363	* (and reinitialize) all cv's in the whole callchain :(	357	* (and reinitialize) all cv's in the whole callchain :(
364	*/	358	*/
365		359
		360	EXTEND (SP, 3 + 1);
366	PUSHs (Nullsv);	361	PUSHs (Nullsv);
367	/* this loop was inspired by pp_caller */	362	/* this loop was inspired by pp_caller */
368	for (;;)	363	for (;;)
369	{	364	{
370	while (cxix >= 0)	365	while (cxix >= 0)
371	{	366	{
372	PERL_CONTEXT *cx = &ccstk[cxix--];	367	PERL_CONTEXT *cx = &ccstk[cxix--];
373		368
374	if (CxTYPE(cx) == CXt_SUB)	369	if (CxTYPE (cx) == CXt_SUB)
375	{	370	{
376	CV *cv = cx->blk_sub.cv;	371	CV *cv = cx->blk_sub.cv;
		372
377	if (CvDEPTH(cv))	373	if (CvDEPTH (cv))
378	{	374	{
379	EXTEND (SP, CvDEPTH(cv)*2);	375	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));	376	PUSHs ((SV *)CvPADLIST (cv));
		377	PUSHs (INT2PTR (SV *, CvDEPTH (cv)));
389	PUSHs ((SV *)cv);	378	PUSHs ((SV *)cv);
390		379
		380	CvDEPTH (cv) = 0;
391	get_padlist (cv);	381	get_padlist (cv);
392	}	382	}
393	}	383	}
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	}	384	}
403		385
404	if (top_si->si_type == PERLSI_MAIN)	386	if (top_si->si_type == PERLSI_MAIN)
405	break;	387	break;
406		388
…		…
410	}	392	}
411		393
412	PUTBACK;	394	PUTBACK;
413	}	395	}
414		396
415	c->defav = flags & TRANSFER_SAVE_DEFAV ? (AV *)SvREFCNT_inc (GvAV (PL_defgv)) : 0;	397	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;	398	c->defsv = c->save & CORO_SAVE_DEFSV ? SvREFCNT_inc (DEFSV) : 0;
417	c->errsv = flags & TRANSFER_SAVE_ERRSV ? SvREFCNT_inc (ERRSV) : 0;	399	c->errsv = c->save & CORO_SAVE_ERRSV ? SvREFCNT_inc (ERRSV) : 0;
		400	c->irssv = c->save & CORO_SAVE_IRSSV ? SvREFCNT_inc (PL_rs) : 0;
418		401
419	c->dowarn = PL_dowarn;	402	#define VAR(name,type)c->name = PL_ ## name;
420	c->in_eval = PL_in_eval;	403	# include "state.h"
421		404	#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	}	405	}
453		406
454	/*	407	/*
455	* allocate various perl stacks. This is an exact copy	408	* allocate various perl stacks. This is an exact copy
456	* of perl.c:init_stacks, except that it uses less memory	409	* of perl.c:init_stacks, except that it uses less memory
457	* on the (sometimes correct) assumption that coroutines do	410	* on the (sometimes correct) assumption that coroutines do
458	* not usually need a lot of stackspace.	411	* not usually need a lot of stackspace.
459	*/	412	*/
		413	#if PREFER_PERL_FUNCTIONS
		414	# define coro_init_stacks init_stacks
		415	#else
460	static void	416	static void
461	coro_init_stacks ()	417	coro_init_stacks ()
462	{	418	{
463	PL_curstackinfo = new_stackinfo(96, 1024/sizeof(PERL_CONTEXT) - 1);	419	PL_curstackinfo = new_stackinfo(128, 1024/sizeof(PERL_CONTEXT));
464	PL_curstackinfo->si_type = PERLSI_MAIN;	420	PL_curstackinfo->si_type = PERLSI_MAIN;
465	PL_curstack = PL_curstackinfo->si_stack;	421	PL_curstack = PL_curstackinfo->si_stack;
466	PL_mainstack = PL_curstack; /* remember in case we switch stacks */	422	PL_mainstack = PL_curstack; /* remember in case we switch stacks */
467		423
468	PL_stack_base = AvARRAY(PL_curstack);	424	PL_stack_base = AvARRAY(PL_curstack);
469	PL_stack_sp = PL_stack_base;	425	PL_stack_sp = PL_stack_base;
470	PL_stack_max = PL_stack_base + AvMAX(PL_curstack);	426	PL_stack_max = PL_stack_base + AvMAX(PL_curstack);
471		427
472	New(50,PL_tmps_stack,96,SV*);	428	New(50,PL_tmps_stack,128,SV*);
473	PL_tmps_floor = -1;	429	PL_tmps_floor = -1;
474	PL_tmps_ix = -1;	430	PL_tmps_ix = -1;
475	PL_tmps_max = 96;	431	PL_tmps_max = 128;
476		432
477	New(54,PL_markstack,16,I32);	433	New(54,PL_markstack,32,I32);
478	PL_markstack_ptr = PL_markstack;	434	PL_markstack_ptr = PL_markstack;
479	PL_markstack_max = PL_markstack + 16;	435	PL_markstack_max = PL_markstack + 32;
480		436
481	#ifdef SET_MARK_OFFSET	437	#ifdef SET_MARK_OFFSET
482	SET_MARK_OFFSET;	438	SET_MARK_OFFSET;
483	#endif	439	#endif
484		440
485	New(54,PL_scopestack,16,I32);	441	New(54,PL_scopestack,32,I32);
486	PL_scopestack_ix = 0;	442	PL_scopestack_ix = 0;
487	PL_scopestack_max = 16;	443	PL_scopestack_max = 32;
488		444
489	New(54,PL_savestack,96,ANY);	445	New(54,PL_savestack,64,ANY);
490	PL_savestack_ix = 0;	446	PL_savestack_ix = 0;
491	PL_savestack_max = 96;	447	PL_savestack_max = 64;
492		448
493	#if !PERL_VERSION_ATLEAST (5,9,0)	449	#if !PERL_VERSION_ATLEAST (5,9,0)
494	New(54,PL_retstack,8,OP*);	450	New(54,PL_retstack,16,OP*);
495	PL_retstack_ix = 0;	451	PL_retstack_ix = 0;
496	PL_retstack_max = 8;	452	PL_retstack_max = 16;
497	#endif	453	#endif
498	}	454	}
		455	#endif
499		456
500	/*	457	/*
501	* destroy the stacks, the callchain etc...	458	* destroy the stacks, the callchain etc...
502	*/	459	*/
503	static void	460	static void
504	coro_destroy_stacks()	461	coro_destroy_stacks ()
505	{	462	{
506	if (!IN_DESTRUCT)	463	if (!IN_DESTRUCT)
507	{	464	{
508	/* is this ugly, I ask? */	465	/* restore all saved variables and stuff */
509	LEAVE_SCOPE (0);	466	LEAVE_SCOPE (0);
		467	assert (PL_tmps_floor == -1);
510		468
511	/* sure it is, but more important: is it correct?? :/ */	469	/* free all temporaries */
512	FREETMPS;	470	FREETMPS;
		471	assert (PL_tmps_ix == -1);
513		472
514	/POPSTACK_TO (PL_mainstack);//D//use/	473	POPSTACK_TO (PL_mainstack);
515	}	474	}
516		475
517	while (PL_curstackinfo->si_next)	476	while (PL_curstackinfo->si_next)
518	PL_curstackinfo = PL_curstackinfo->si_next;	477	PL_curstackinfo = PL_curstackinfo->si_next;
519		478
520	while (PL_curstackinfo)	479	while (PL_curstackinfo)
521	{	480	{
522	PERL_SI *p = PL_curstackinfo->si_prev;	481	PERL_SI *p = PL_curstackinfo->si_prev;
523		482
524	{ /D//remove/
525	dSP;
526	SWITCHSTACK (PL_curstack, PL_curstackinfo->si_stack);
527	PUTBACK; /* possibly superfluous */
528	}
529
530	if (!IN_DESTRUCT)	483	if (!IN_DESTRUCT)
531	{
532	dounwind (-1);/D//remove/
533	SvREFCNT_dec (PL_curstackinfo->si_stack);	484	SvREFCNT_dec (PL_curstackinfo->si_stack);
534	}
535		485
536	Safefree (PL_curstackinfo->si_cxstack);	486	Safefree (PL_curstackinfo->si_cxstack);
537	Safefree (PL_curstackinfo);	487	Safefree (PL_curstackinfo);
538	PL_curstackinfo = p;	488	PL_curstackinfo = p;
539	}	489	}
…		…
554	* emulate part of the perl startup here.	504	* emulate part of the perl startup here.
555	*/	505	*/
556		506
557	coro_init_stacks ();	507	coro_init_stacks ();
558		508
559	PL_curcop = 0;	509	PL_curcop = &PL_compiling;
560	PL_in_eval = 0;	510	PL_in_eval = EVAL_NULL;
561	PL_curpm = 0;	511	PL_curpm = 0;
		512	PL_localizing = 0;
		513	PL_dirty = 0;
		514	PL_restartop = 0;
562		515
563	{	516	{
564	dSP;	517	dSP;
565	LOGOP myop;	518	LOGOP myop;
566		519
567	/* I have no idea why this is needed, but it is */
568	PUSHMARK (SP);
569
570	SvREFCNT_dec (GvAV (PL_defgv));	520	SvREFCNT_dec (GvAV (PL_defgv));
571	GvAV (PL_defgv) = coro->args; coro->args = 0;	521	GvAV (PL_defgv) = coro->args; coro->args = 0;
572		522
573	Zero (&myop, 1, LOGOP);	523	Zero (&myop, 1, LOGOP);
574	myop.op_next = Nullop;	524	myop.op_next = Nullop;
575	myop.op_flags = OPf_WANT_VOID;	525	myop.op_flags = OPf_WANT_VOID;
576		526
		527	PUSHMARK (SP);
		528	XPUSHs ((SV *)get_cv ("Coro::State::_coro_init", FALSE));
		529	PUTBACK;
577	PL_op = (OP *)&myop;	530	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);	531	PL_op = PL_ppaddr[OP_ENTERSUB](aTHX);
583	SPAGAIN;	532	SPAGAIN;
584
585	ENTER; /* necessary e.g. for dounwind */
586	}	533	}
		534
		535	ENTER; /* necessary e.g. for dounwind */
587	}	536	}
588		537
589	static void	538	static void
590	free_coro_mortal ()	539	free_coro_mortal ()
591	{	540	{
…		…
594	SvREFCNT_dec (coro_mortal);	543	SvREFCNT_dec (coro_mortal);
595	coro_mortal = 0;	544	coro_mortal = 0;
596	}	545	}
597	}	546	}
598		547
		548	/* inject a fake call to Coro::State::_cctx_init into the execution */
599	static void NOINLINE	549	static void NOINLINE
600	prepare_cctx (coro_stack *cctx)	550	prepare_cctx (coro_cctx *cctx)
601	{	551	{
602	dSP;	552	dSP;
603	LOGOP myop;	553	LOGOP myop;
604		554
605	Zero (&myop, 1, LOGOP);	555	Zero (&myop, 1, LOGOP);
606	myop.op_next = PL_op;	556	myop.op_next = PL_op;
607	myop.op_flags = OPf_WANT_VOID;	557	myop.op_flags = OPf_WANT_VOID \| OPf_STACKED;
608
609	sv_setiv (get_sv ("Coro::State::cctx_stack", FALSE), PTR2IV (cctx));
610		558
611	PUSHMARK (SP);	559	PUSHMARK (SP);
		560	EXTEND (SP, 2);
		561	PUSHs (sv_2mortal (newSViv (PTR2IV (cctx))));
612	XPUSHs ((SV *)get_cv ("Coro::State::cctx_init", FALSE));	562	PUSHs ((SV *)get_cv ("Coro::State::_cctx_init", FALSE));
613	PUTBACK;	563	PUTBACK;
		564	PL_op = (OP *)&myop;
614	PL_restartop = PL_ppaddr[OP_ENTERSUB](aTHX);	565	PL_op = PL_ppaddr[OP_ENTERSUB](aTHX);
615	SPAGAIN;	566	SPAGAIN;
616	}	567	}
617		568
618	static void	569	static void
619	coro_run (void *arg)	570	coro_run (void *arg)
620	{	571	{
621	/* coro_run is the alternative epilogue of transfer() */	572	/* coro_run is the alternative tail of transfer(), so unlock here. */
622	UNLOCK;	573	UNLOCK;
623		574
624	/*	575	/*
625	* this is a _very_ stripped down perl interpreter ;)	576	* this is a _very_ stripped down perl interpreter ;)
626	*/	577	*/
627	PL_top_env = &PL_start_env;	578	PL_top_env = &PL_start_env;
		579
628	/* inject call to cctx_init */	580	/* inject call to cctx_init */
629	prepare_cctx ((coro_stack *)arg);	581	prepare_cctx ((coro_cctx *)arg);
630		582
631	/* somebody will hit me for both perl_run and PL_restartop */	583	/* somebody will hit me for both perl_run and PL_restartop */
		584	PL_restartop = PL_op;
632	perl_run (PL_curinterp);	585	perl_run (PL_curinterp);
633		586
634	fputs ("FATAL: C coroutine fell over the edge of the world, aborting.\n", stderr);	587	fputs ("FATAL: C coroutine fell over the edge of the world, aborting. Did you call exit in a coroutine?\n", stderr);
635	abort ();	588	abort ();
636	}	589	}
637		590
638	static coro_stack *	591	static coro_cctx *
639	stack_new ()	592	cctx_new ()
640	{	593	{
641	coro_stack *stack;	594	coro_cctx *cctx;
642		595
		596	++cctx_count;
		597
643	New (0, stack, 1, coro_stack);	598	Newz (0, cctx, 1, coro_cctx);
644		599
645	#if HAVE_MMAP	600	#if HAVE_MMAP
646		601
647	stack->ssize = ((STACKSIZE * sizeof (long) + PAGESIZE - 1) / PAGESIZE + STACKGUARD) * PAGESIZE;	602	cctx->ssize = ((STACKSIZE * sizeof (long) + PAGESIZE - 1) / PAGESIZE + STACKGUARD) * PAGESIZE;
648	/* mmap suppsedly does allocate-on-write for us */	603	/* 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);	604	cctx->sptr = mmap (0, cctx->ssize, PROT_EXEC\|PROT_READ\|PROT_WRITE, MAP_PRIVATE\|MAP_ANONYMOUS, 0, 0);
650		605
651	if (stack->sptr == (void *)-1)	606	if (cctx->sptr == (void *)-1)
652	{	607	{
653	perror ("FATAL: unable to mmap stack for coroutine");	608	perror ("FATAL: unable to mmap stack for coroutine");
654	_exit (EXIT_FAILURE);	609	_exit (EXIT_FAILURE);
655	}	610	}
656		611
657	# if STACKGUARD	612	# if STACKGUARD
658	mprotect (stack->sptr, STACKGUARD * PAGESIZE, PROT_NONE);	613	mprotect (cctx->sptr, STACKGUARD * PAGESIZE, PROT_NONE);
659	# endif	614	# endif
660		615
661	#else	616	#else
662		617
663	stack->ssize = STACKSIZE * (long)sizeof (long);	618	cctx->ssize = STACKSIZE * (long)sizeof (long);
664	New (0, stack->sptr, STACKSIZE, long);	619	New (0, cctx->sptr, STACKSIZE, long);
665		620
666	if (!stack->sptr)	621	if (!cctx->sptr)
667	{	622	{
668	perror (stderr, "FATAL: unable to malloc stack for coroutine");	623	perror ("FATAL: unable to malloc stack for coroutine");
669	_exit (EXIT_FAILURE);	624	_exit (EXIT_FAILURE);
670	}	625	}
671		626
672	#endif	627	#endif
673		628
674	#if USE_VALGRIND	629	#if USE_VALGRIND
675	stack->valgrind_id = VALGRIND_STACK_REGISTER (	630	cctx->valgrind_id = VALGRIND_STACK_REGISTER (
676	STACKGUARD * PAGESIZE + (char *)stack->sptr,	631	STACKGUARD * PAGESIZE + (char *)cctx->sptr,
677	stack->ssize + (char *)stack->sptr	632	cctx->ssize + (char *)cctx->sptr
678	);	633	);
679	#endif	634	#endif
680		635
681	coro_create (&stack->cctx, coro_run, (void *)stack, stack->sptr, stack->ssize);	636	coro_create (&cctx->cctx, coro_run, (void *)cctx, cctx->sptr, cctx->ssize);
682		637
683	return stack;	638	return cctx;
684	}	639	}
685		640
686	static void	641	static void
687	stack_free (coro_stack *stack)	642	cctx_destroy (coro_cctx *cctx)
688	{	643	{
689	if (!stack)	644	if (!cctx)
690	return;	645	return;
691		646
		647	--cctx_count;
		648
692	#if USE_VALGRIND	649	#if USE_VALGRIND
693	VALGRIND_STACK_DEREGISTER (stack->valgrind_id);	650	VALGRIND_STACK_DEREGISTER (cctx->valgrind_id);
694	#endif	651	#endif
695		652
696	#if HAVE_MMAP	653	#if HAVE_MMAP
697	munmap (stack->sptr, stack->ssize);	654	munmap (cctx->sptr, cctx->ssize);
698	#else	655	#else
699	Safefree (stack->sptr);	656	Safefree (cctx->sptr);
700	#endif	657	#endif
701		658
702	Safefree (stack);	659	Safefree (cctx);
703	}	660	}
704		661
705	static coro_stack *stack_first;
706	static int cctx_count, cctx_idle;
707
708	static coro_stack *	662	static coro_cctx *
709	stack_get ()	663	cctx_get ()
710	{	664	{
711	coro_stack *stack;	665	coro_cctx *cctx;
712		666
713	if (stack_first)	667	if (cctx_first)
714	{	668	{
		669	cctx = cctx_first;
		670	cctx_first = cctx->next;
715	--cctx_idle;	671	--cctx_idle;
716	stack = stack_first;
717	stack_first = stack->next;
718	}	672	}
719	else	673	else
720	{	674	{
721	++cctx_count;	675	cctx = cctx_new ();
722	stack = stack_new ();
723	PL_op = PL_op->op_next;	676	PL_op = PL_op->op_next;
724	}	677	}
725		678
726	return stack;	679	return cctx;
727	}	680	}
728		681
729	static void	682	static void
730	stack_put (coro_stack *stack)	683	cctx_put (coro_cctx *cctx)
731	{	684	{
		685	/* free another cctx if overlimit */
		686	if (cctx_idle >= MAX_IDLE_CCTX)
		687	{
		688	coro_cctx *first = cctx_first;
		689	cctx_first = first->next;
		690	--cctx_idle;
		691
		692	assert (!first->inuse);
		693	cctx_destroy (first);
		694	}
		695
732	++cctx_idle;	696	++cctx_idle;
733	stack->next = stack_first;	697	cctx->next = cctx_first;
734	stack_first = stack;	698	cctx_first = cctx;
735	}	699	}
736		700
737	/* never call directly, always through the coro_state_transfer global variable */	701	/* never call directly, always through the coro_state_transfer global variable */
738	static void NOINLINE	702	static void NOINLINE
739	transfer (struct coro prev, struct coro next, int flags)	703	transfer (struct coro prev, struct coro next)
740	{	704	{
741	dSTACKLEVEL;	705	dSTACKLEVEL;
742		706
743	/* sometimes transfer is only called to set idle_sp */	707	/* sometimes transfer is only called to set idle_sp */
744	if (flags == TRANSFER_SET_STACKLEVEL)	708	if (!next)
		709	{
745	((coro_stack *)prev)->idle_sp = STACKLEVEL;	710	((coro_cctx *)prev)->idle_sp = STACKLEVEL;
		711	assert (((coro_cctx )prev)->top_env = PL_top_env); / just for the side effetc when assert is enabled */
		712	}
746	else if (prev != next)	713	else if (prev != next)
747	{	714	{
748	coro_stack *prev__stack;	715	coro_cctx *prev__cctx;
		716
		717	if (prev->flags & CF_NEW)
		718	{
		719	/* create a new empty context */
		720	Newz (0, prev->cctx, 1, coro_cctx);
		721	prev->cctx->inuse = 1;
		722	prev->flags &= ~CF_NEW;
		723	prev->flags \|= CF_RUNNING;
		724	}
		725
		726	/TODO: must not croak here /
		727	if (!prev->flags & CF_RUNNING)
		728	croak ("Coro::State::transfer called with non-running prev Coro::State, but can only transfer from running states");
		729
		730	if (next->flags & CF_RUNNING)
		731	croak ("Coro::State::transfer called with running next Coro::State, but can only transfer to inactive states");
		732
		733	prev->flags &= ~CF_RUNNING;
		734	next->flags \|= CF_RUNNING;
749		735
750	LOCK;	736	LOCK;
751		737
752	if (next->mainstack)	738	if (next->flags & CF_NEW)
753	{	739	{
754	/* coroutine already started */	740	/* need to start coroutine */
755	SAVE (prev, flags);	741	next->flags &= ~CF_NEW;
756	LOAD (next);	742	/* first get rid of the old state */
		743	save_perl (prev);
		744	/* setup coroutine call */
		745	setup_coro (next);
		746	/* need a new stack */
		747	assert (!next->cctx);
757	}	748	}
758	else	749	else
759	{	750	{
760	/* need to start coroutine */	751	/* coroutine already started */
761	/* first get rid of the old state */	752	save_perl (prev);
762	SAVE (prev, -1);	753	load_perl (next);
763	/* setup coroutine call */
764	setup_coro (next);
765	/* need a stack */
766	next->stack = 0;
767	}	754	}
768		755
769	if (!prev->stack)
770	/* create a new empty context */
771	Newz (0, prev->stack, 1, coro_stack);
772
773	prev__stack = prev->stack;	756	prev__cctx = prev->cctx;
774		757
775	/* possibly "free" the stack */	758	/* possibly "free" the cctx */
776	if (prev__stack->idle_sp == STACKLEVEL)	759	if (prev__cctx->idle_sp == STACKLEVEL)
777	{	760	{
778	stack_put (prev__stack);	761	/* I assume that STACKLEVEL is a stronger indicator than PL_top_env changes */
		762	assert (PL_top_env == prev__cctx->top_env);
		763
779	prev->stack = 0;	764	prev->cctx = 0;
		765
		766	cctx_put (prev__cctx);
		767	prev__cctx->inuse = 0;
780	}	768	}
781		769
782	if (!next->stack)	770	if (!next->cctx)
783	next->stack = stack_get ();
784
785	if (prev__stack != next->stack)
786	{	771	{
		772	next->cctx = cctx_get ();
		773	assert (!next->cctx->inuse);
		774	next->cctx->inuse = 1;
		775	}
		776
		777	if (prev__cctx != next->cctx)
		778	{
787	prev__stack->top_env = PL_top_env;	779	prev__cctx->top_env = PL_top_env;
788	PL_top_env = next->stack->top_env;	780	PL_top_env = next->cctx->top_env;
789	coro_transfer (&prev__stack->cctx, &next->stack->cctx);	781	coro_transfer (&prev__cctx->cctx, &next->cctx->cctx);
790	}	782	}
791		783
792	free_coro_mortal ();	784	free_coro_mortal ();
793		785
794	UNLOCK;	786	UNLOCK;
…		…
796	}	788	}
797		789
798	struct transfer_args	790	struct transfer_args
799	{	791	{
800	struct coro prev, next;	792	struct coro prev, next;
801	int flags;
802	};	793	};
803		794
804	#define TRANSFER(ta) transfer ((ta).prev, (ta).next, (ta).flags)	795	#define TRANSFER(ta) transfer ((ta).prev, (ta).next)
805		796
806	static void	797	static void
807	coro_state_destroy (struct coro *coro)	798	coro_state_destroy (struct coro *coro)
808	{	799	{
809	if (coro->refcnt--)	800	if (coro->refcnt--)
810	return;	801	return;
811		802
812	if (coro->mainstack && coro->mainstack != main_mainstack)	803	if (coro->mainstack && coro->mainstack != main_mainstack)
813	{	804	{
814	struct coro temp;	805	struct coro temp;
		806	Zero (&temp, 1, struct coro);
		807	temp.save = CORO_SAVE_ALL;
815		808
816	SAVE ((&temp), TRANSFER_SAVE_ALL);	809	if (coro->flags & CF_RUNNING)
817	LOAD (coro);	810	croak ("FATAL: tried to destroy currently running coroutine");
		811
		812	save_perl (&temp);
		813	load_perl (coro);
818		814
819	coro_destroy_stacks ();	815	coro_destroy_stacks ();
820		816
821	LOAD ((&temp)); /* this will get rid of defsv etc.. */	817	load_perl (&temp); /* this will get rid of defsv etc.. */
822		818
823	coro->mainstack = 0;	819	coro->mainstack = 0;
824	}	820	}
825		821
826	stack_free (coro->stack);	822	cctx_destroy (coro->cctx);
827	SvREFCNT_dec (coro->args);	823	SvREFCNT_dec (coro->args);
828	Safefree (coro);	824	Safefree (coro);
829	}	825	}
830		826
831	static int	827	static int
…		…
881	assert (mg->mg_type == PERL_MAGIC_ext);	877	assert (mg->mg_type == PERL_MAGIC_ext);
882	return (struct coro *)mg->mg_ptr;	878	return (struct coro *)mg->mg_ptr;
883	}	879	}
884		880
885	static void	881	static void
886	prepare_transfer (struct transfer_args ta, SV prev, SV *next, int flags)	882	prepare_transfer (struct transfer_args ta, SV prev_sv, SV *next_sv)
887	{	883	{
888	ta->prev = SvSTATE (prev);	884	ta->prev = SvSTATE (prev_sv);
889	ta->next = SvSTATE (next);	885	ta->next = SvSTATE (next_sv);
890	ta->flags = flags;
891	}	886	}
892		887
893	static void	888	static void
894	api_transfer (SV prev, SV next, int flags)	889	api_transfer (SV prev_sv, SV next_sv)
895	{	890	{
896	dTHX;
897	struct transfer_args ta;	891	struct transfer_args ta;
898		892
899	prepare_transfer (&ta, prev, next, flags);	893	prepare_transfer (&ta, prev_sv, next_sv);
900	TRANSFER (ta);	894	TRANSFER (ta);
		895	}
		896
		897	static int
		898	api_save (SV *coro_sv, int new_save)
		899	{
		900	struct coro *coro = SvSTATE (coro_sv);
		901	int old_save = coro->save;
		902
		903	if (new_save >= 0)
		904	coro->save = new_save;
		905
		906	return old_save;
901	}	907	}
902		908
903	/ Coro ******************************************************************/	909	/ Coro ******************************************************************/
904		910
905	#define PRIO_MAX 3	911	#define PRIO_MAX 3
…		…
908	#define PRIO_LOW -1	914	#define PRIO_LOW -1
909	#define PRIO_IDLE -3	915	#define PRIO_IDLE -3
910	#define PRIO_MIN -4	916	#define PRIO_MIN -4
911		917
912	/* for Coro.pm */	918	/* for Coro.pm */
913	static GV coro_current, coro_idle;	919	static SV *coro_current;
914	static AV *coro_ready [PRIO_MAX-PRIO_MIN+1];	920	static AV *coro_ready [PRIO_MAX-PRIO_MIN+1];
915	static int coro_nready;	921	static int coro_nready;
916		922
917	static void	923	static void
918	coro_enq (SV *sv)	924	coro_enq (SV *coro_sv)
919	{	925	{
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);	926	av_push (coro_ready [SvSTATE (coro_sv)->prio - PRIO_MIN], coro_sv);
928	coro_nready++;	927	coro_nready++;
929	}	928	}
930		929
931	static SV *	930	static SV *
932	coro_deq (int min_prio)	931	coro_deq (int min_prio)
…		…
945	}	944	}
946		945
947	return 0;	946	return 0;
948	}	947	}
949		948
950	static void	949	static int
951	api_ready (SV *coro)	950	api_ready (SV *coro_sv)
952	{	951	{
953	dTHX;	952	struct coro *coro;
954		953
955	if (SvROK (coro))	954	if (SvROK (coro_sv))
956	coro = SvRV (coro);	955	coro_sv = SvRV (coro_sv);
		956
		957	coro = SvSTATE (coro_sv);
		958
		959	if (coro->flags & CF_READY)
		960	return 0;
		961
		962	coro->flags \|= CF_READY;
957		963
958	LOCK;	964	LOCK;
959	coro_enq (SvREFCNT_inc (coro));	965	coro_enq (SvREFCNT_inc (coro_sv));
960	UNLOCK;	966	UNLOCK;
		967
		968	return 1;
		969	}
		970
		971	static int
		972	api_is_ready (SV *coro_sv)
		973	{
		974	return !!(SvSTATE (coro_sv)->flags & CF_READY);
961	}	975	}
962		976
963	static void	977	static void
964	prepare_schedule (struct transfer_args *ta)	978	prepare_schedule (struct transfer_args *ta)
965	{	979	{
966	SV current, prev, *next;	980	SV prev, next;
967
968	current = GvSV (coro_current);
969		981
970	for (;;)	982	for (;;)
971	{	983	{
972	LOCK;	984	LOCK;
973	next = coro_deq (PRIO_MIN);	985	next = coro_deq (PRIO_MIN);
…		…
982	ENTER;	994	ENTER;
983	SAVETMPS;	995	SAVETMPS;
984		996
985	PUSHMARK (SP);	997	PUSHMARK (SP);
986	PUTBACK;	998	PUTBACK;
987	call_sv (GvSV (coro_idle), G_DISCARD);	999	call_sv (get_sv ("Coro::idle", FALSE), G_DISCARD);
988		1000
989	FREETMPS;	1001	FREETMPS;
990	LEAVE;	1002	LEAVE;
991	}	1003	}
992	}	1004	}
993		1005
994	prev = SvRV (current);	1006	prev = SvRV (coro_current);
995	SvRV (current) = next;	1007	SvRV_set (coro_current, next);
996		1008
997	/* free this only after the transfer */	1009	/* free this only after the transfer */
998	LOCK;	1010	LOCK;
999	free_coro_mortal ();	1011	free_coro_mortal ();
1000	UNLOCK;	1012	UNLOCK;
1001	coro_mortal = prev;	1013	coro_mortal = prev;
1002		1014
		1015	assert (!SvROK(prev));//D
		1016	assert (!SvROK(next));//D
		1017
1003	ta->prev = SvSTATE (prev);	1018	ta->prev = SvSTATE (prev);
1004	ta->next = SvSTATE (next);	1019	ta->next = SvSTATE (next);
1005	ta->flags = TRANSFER_SAVE_ALL;	1020
		1021	assert (ta->next->flags & CF_READY);
		1022	ta->next->flags &= ~CF_READY;
1006	}	1023	}
1007		1024
1008	static void	1025	static void
1009	prepare_cede (struct transfer_args *ta)	1026	prepare_cede (struct transfer_args *ta)
1010	{	1027	{
1011	LOCK;	1028	api_ready (coro_current);
1012	coro_enq (SvREFCNT_inc (SvRV (GvSV (coro_current))));
1013	UNLOCK;
1014		1029
1015	prepare_schedule (ta);	1030	prepare_schedule (ta);
1016	}	1031	}
1017		1032
1018	static void	1033	static void
1019	api_schedule (void)	1034	api_schedule (void)
1020	{	1035	{
1021	dTHX;
1022	struct transfer_args ta;	1036	struct transfer_args ta;
1023		1037
1024	prepare_schedule (&ta);	1038	prepare_schedule (&ta);
1025	TRANSFER (ta);	1039	TRANSFER (ta);
1026	}	1040	}
1027		1041
1028	static void	1042	static void
1029	api_cede (void)	1043	api_cede (void)
1030	{	1044	{
1031	dTHX;
1032	struct transfer_args ta;	1045	struct transfer_args ta;
1033		1046
1034	prepare_cede (&ta);	1047	prepare_cede (&ta);
1035	TRANSFER (ta);	1048	TRANSFER (ta);
1036	}	1049	}
…		…
1046	#endif	1059	#endif
1047	BOOT_PAGESIZE;	1060	BOOT_PAGESIZE;
1048		1061
1049	coro_state_stash = gv_stashpv ("Coro::State", TRUE);	1062	coro_state_stash = gv_stashpv ("Coro::State", TRUE);
1050		1063
1051	newCONSTSUB (coro_state_stash, "SAVE_DEFAV", newSViv (TRANSFER_SAVE_DEFAV));	1064	newCONSTSUB (coro_state_stash, "SAVE_DEFAV", newSViv (CORO_SAVE_DEFAV));
1052	newCONSTSUB (coro_state_stash, "SAVE_DEFSV", newSViv (TRANSFER_SAVE_DEFSV));	1065	newCONSTSUB (coro_state_stash, "SAVE_DEFSV", newSViv (CORO_SAVE_DEFSV));
1053	newCONSTSUB (coro_state_stash, "SAVE_ERRSV", newSViv (TRANSFER_SAVE_ERRSV));	1066	newCONSTSUB (coro_state_stash, "SAVE_ERRSV", newSViv (CORO_SAVE_ERRSV));
		1067	newCONSTSUB (coro_state_stash, "SAVE_IRSSV", newSViv (CORO_SAVE_IRSSV));
		1068	newCONSTSUB (coro_state_stash, "SAVE_ALL", newSViv (CORO_SAVE_ALL));
1054		1069
1055	main_mainstack = PL_mainstack;	1070	main_mainstack = PL_mainstack;
1056		1071
1057	coroapi.ver = CORO_API_VERSION;	1072	coroapi.ver = CORO_API_VERSION;
1058	coroapi.transfer = api_transfer;	1073	coroapi.transfer = api_transfer;
…		…
1068	HV *hv;	1083	HV *hv;
1069	int i;	1084	int i;
1070		1085
1071	Newz (0, coro, 1, struct coro);	1086	Newz (0, coro, 1, struct coro);
1072	coro->args = newAV ();	1087	coro->args = newAV ();
		1088	coro->save = CORO_SAVE_ALL;
		1089	coro->flags = CF_NEW;
1073		1090
1074	hv = newHV ();	1091	hv = newHV ();
1075	sv_magicext ((SV )hv, 0, PERL_MAGIC_ext, &coro_state_vtbl, (char )coro, 0)->mg_flags \|= MGf_DUP;	1092	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));	1093	RETVAL = sv_bless (newRV_noinc ((SV *)hv), gv_stashpv (klass, 1));
1077		1094
1078	for (i = 1; i < items; i++)	1095	for (i = 1; i < items; i++)
1079	av_push (coro->args, newSVsv (ST (i)));	1096	av_push (coro->args, newSVsv (ST (i)));
1080
1081	/coro->mainstack = 0; //actual work is done inside transfer /
1082	/coro->stack = 0;/
1083	}	1097	}
1084	OUTPUT:	1098	OUTPUT:
		1099	RETVAL
		1100
		1101	int
		1102	save (SV *coro, int new_save = -1)
		1103	CODE:
		1104	RETVAL = api_save (coro, new_save);
		1105	OUTPUT:
1085	RETVAL	1106	RETVAL
1086		1107
1087	void	1108	void
1088	_set_stacklevel (...)	1109	_set_stacklevel (...)
1089	ALIAS:	1110	ALIAS:
1090	Coro::State::transfer = 1	1111	Coro::State::transfer = 1
1091	Coro::schedule = 2	1112	Coro::schedule = 2
1092	Coro::cede = 3	1113	Coro::cede = 3
1093	Coro::Cont::yield = 4
1094	CODE:	1114	CODE:
1095	{	1115	{
1096	struct transfer_args ta;	1116	struct transfer_args ta;
1097		1117
1098	switch (ix)	1118	switch (ix)
1099	{	1119	{
1100	case 0:	1120	case 0:
1101	ta.prev = (struct coro )INT2PTR (coro_stack , SvIV (ST (0)));	1121	ta.prev = (struct coro )INT2PTR (coro_cctx , SvIV (ST (0)));
1102	ta.next = 0;	1122	ta.next = 0;
1103	ta.flags = TRANSFER_SET_STACKLEVEL;
1104	break;	1123	break;
1105		1124
1106	case 1:	1125	case 1:
1107	if (items != 3)	1126	if (items != 2)
1108	croak ("Coro::State::transfer(prev,next,flags) expects three arguments, not %d", items);	1127	croak ("Coro::State::transfer (prev,next) expects two arguments, not %d", items);
1109		1128
1110	prepare_transfer (&ta, ST (0), ST (1), SvIV (ST (2)));	1129	prepare_transfer (&ta, ST (0), ST (1));
1111	break;	1130	break;
1112		1131
1113	case 2:	1132	case 2:
1114	prepare_schedule (&ta);	1133	prepare_schedule (&ta);
1115	break;	1134	break;
1116		1135
1117	case 3:	1136	case 3:
1118	prepare_cede (&ta);	1137	prepare_cede (&ta);
1119	break;	1138	break;
1120
1121	case 4:
1122	{
1123	SV *yieldstack;
1124	SV *sv;
1125	AV *defav = GvAV (PL_defgv);
1126
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;
1146
1147	}	1139	}
1148		1140
1149	TRANSFER (ta);	1141	TRANSFER (ta);
1150	}	1142	}
1151		1143
…		…
1166	int code	1158	int code
1167	PROTOTYPE: $	1159	PROTOTYPE: $
1168	CODE:	1160	CODE:
1169	_exit (code);	1161	_exit (code);
1170		1162
		1163	int
		1164	cctx_count ()
		1165	CODE:
		1166	RETVAL = cctx_count;
		1167	OUTPUT:
		1168	RETVAL
		1169
		1170	int
		1171	cctx_idle ()
		1172	CODE:
		1173	RETVAL = cctx_idle;
		1174	OUTPUT:
		1175	RETVAL
		1176
1171	MODULE = Coro::State PACKAGE = Coro	1177	MODULE = Coro::State PACKAGE = Coro
1172		1178
1173	BOOT:	1179	BOOT:
1174	{	1180	{
1175	int i;	1181	int i;
…		…
1181	newCONSTSUB (coro_stash, "PRIO_NORMAL", newSViv (PRIO_NORMAL));	1187	newCONSTSUB (coro_stash, "PRIO_NORMAL", newSViv (PRIO_NORMAL));
1182	newCONSTSUB (coro_stash, "PRIO_LOW", newSViv (PRIO_LOW));	1188	newCONSTSUB (coro_stash, "PRIO_LOW", newSViv (PRIO_LOW));
1183	newCONSTSUB (coro_stash, "PRIO_IDLE", newSViv (PRIO_IDLE));	1189	newCONSTSUB (coro_stash, "PRIO_IDLE", newSViv (PRIO_IDLE));
1184	newCONSTSUB (coro_stash, "PRIO_MIN", newSViv (PRIO_MIN));	1190	newCONSTSUB (coro_stash, "PRIO_MIN", newSViv (PRIO_MIN));
1185		1191
1186	coro_current = gv_fetchpv ("Coro::current", TRUE, SVt_PV);	1192	coro_current = get_sv ("Coro::current", FALSE);
1187	coro_idle = gv_fetchpv ("Coro::idle" , TRUE, SVt_PV);	1193	SvREADONLY_on (coro_current);
1188		1194
1189	for (i = PRIO_MAX - PRIO_MIN + 1; i--; )	1195	for (i = PRIO_MAX - PRIO_MIN + 1; i--; )
1190	coro_ready[i] = newAV ();	1196	coro_ready[i] = newAV ();
1191		1197
1192	{	1198	{
1193	SV *sv = perl_get_sv("Coro::API", 1);	1199	SV *sv = perl_get_sv("Coro::API", 1);
1194		1200
1195	coroapi.schedule = api_schedule;	1201	coroapi.schedule = api_schedule;
		1202	coroapi.save = api_save;
1196	coroapi.cede = api_cede;	1203	coroapi.cede = api_cede;
1197	coroapi.ready = api_ready;	1204	coroapi.ready = api_ready;
		1205	coroapi.is_ready = api_is_ready;
1198	coroapi.nready = &coro_nready;	1206	coroapi.nready = &coro_nready;
1199	coroapi.current = coro_current;	1207	coroapi.current = coro_current;
1200		1208
1201	GCoroAPI = &coroapi;	1209	GCoroAPI = &coroapi;
1202	sv_setiv (sv, (IV)&coroapi);	1210	sv_setiv (sv, (IV)&coroapi);
1203	SvREADONLY_on (sv);	1211	SvREADONLY_on (sv);
1204	}	1212	}
1205	}	1213	}
		1214
		1215	void
		1216	_set_current (SV *current)
		1217	PROTOTYPE: $
		1218	CODE:
		1219	SvREFCNT_dec (SvRV (coro_current));
		1220	SvRV_set (coro_current, SvREFCNT_inc (SvRV (current)));
1206		1221
1207	int	1222	int
1208	prio (Coro::State coro, int newprio = 0)	1223	prio (Coro::State coro, int newprio = 0)
1209	ALIAS:	1224	ALIAS:
1210	nice = 1	1225	nice = 1
…		…
1213	RETVAL = coro->prio;	1228	RETVAL = coro->prio;
1214		1229
1215	if (items > 1)	1230	if (items > 1)
1216	{	1231	{
1217	if (ix)	1232	if (ix)
1218	newprio += coro->prio;	1233	newprio = coro->prio - newprio;
1219		1234
1220	if (newprio < PRIO_MIN) newprio = PRIO_MIN;	1235	if (newprio < PRIO_MIN) newprio = PRIO_MIN;
1221	if (newprio > PRIO_MAX) newprio = PRIO_MAX;	1236	if (newprio > PRIO_MAX) newprio = PRIO_MAX;
1222		1237
1223	coro->prio = newprio;	1238	coro->prio = newprio;
1224	}	1239	}
1225	}	1240	}
		1241	OUTPUT:
		1242	RETVAL
1226		1243
1227	void	1244	SV *
1228	ready (SV *self)	1245	ready (SV *self)
1229	PROTOTYPE: $	1246	PROTOTYPE: $
1230	CODE:	1247	CODE:
1231	api_ready (self);	1248	RETVAL = boolSV (api_ready (self));
		1249	OUTPUT:
		1250	RETVAL
		1251
		1252	SV *
		1253	is_ready (SV *self)
		1254	PROTOTYPE: $
		1255	CODE:
		1256	RETVAL = boolSV (api_is_ready (self));
		1257	OUTPUT:
		1258	RETVAL
1232		1259
1233	int	1260	int
1234	nready (...)	1261	nready (...)
1235	PROTOTYPE:	1262	PROTOTYPE:
1236	CODE:	1263	CODE:
…		…
1242		1269
1243	SV *	1270	SV *
1244	_get_state ()	1271	_get_state ()
1245	CODE:	1272	CODE:
1246	{	1273	{
1247	struct {	1274	struct io_state *data;
1248	int errorno;
1249	int laststype;
1250	int laststatval;
1251	Stat_t statcache;
1252	} data;
1253		1275
		1276	RETVAL = newSV (sizeof (struct io_state));
		1277	data = (struct io_state *)SvPVX (RETVAL);
		1278	SvCUR_set (RETVAL, sizeof (struct io_state));
		1279	SvPOK_only (RETVAL);
		1280
1254	data.errorno = errno;	1281	data->errorno = errno;
1255	data.laststype = PL_laststype;	1282	data->laststype = PL_laststype;
1256	data.laststatval = PL_laststatval;	1283	data->laststatval = PL_laststatval;
1257	data.statcache = PL_statcache;	1284	data->statcache = PL_statcache;
1258
1259	RETVAL = newSVpvn ((char *)&data, sizeof data);
1260	}	1285	}
1261	OUTPUT:	1286	OUTPUT:
1262	RETVAL	1287	RETVAL
1263		1288
1264	void	1289	void
1265	_set_state (char *data_)	1290	_set_state (char *data_)
1266	PROTOTYPE: $	1291	PROTOTYPE: $
1267	CODE:	1292	CODE:
1268	{	1293	{
1269	struct {	1294	struct io_state data = (void )data_;
1270	int errorno;
1271	int laststype;
1272	int laststatval;
1273	Stat_t statcache;
1274	} data = (void )data_;
1275		1295
1276	errno = data->errorno;	1296	errno = data->errorno;
1277	PL_laststype = data->laststype;	1297	PL_laststype = data->laststype;
1278	PL_laststatval = data->laststatval;	1298	PL_laststatval = data->laststatval;
1279	PL_statcache = data->statcache;	1299	PL_statcache = data->statcache;
1280	}	1300	}
		1301

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Comparing Coro/Coro/State.xs (file contents): Revision 1.104 by root, Mon Nov 27 01:51:02 2006 UTC vs. Revision 1.130 by root, Mon Dec 25 13:25:55 2006 UTC

Diff Legend

Comparing Coro/Coro/State.xs (file contents):
Revision 1.104 by root, Mon Nov 27 01:51:02 2006 UTC vs.
Revision 1.130 by root, Mon Dec 25 13:25:55 2006 UTC