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

Comparing Coro/Coro/State.xs (file contents):
Revision 1.102 by root, Mon Nov 27 01:28:03 2006 UTC vs.
Revision 1.123 by root, Mon Dec 4 21:56:00 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	#if USE_VALGRIND
		10	# include <valgrind/valgrind.h>
		11	#endif
		12
		13	/* the maximum number of idle cctx that will be pooled */
		14	#define MAX_IDLE_CCTX 8
8		15
9	#define PERL_VERSION_ATLEAST(a,b,c) \	16	#define PERL_VERSION_ATLEAST(a,b,c) \
10	(PERL_REVISION > (a) \	17	(PERL_REVISION > (a) \
11	\|\| (PERL_REVISION == (a) \	18	\|\| (PERL_REVISION == (a) \
12	&& (PERL_VERSION > (b) \	19	&& (PERL_VERSION > (b) \
…		…
58	# ifndef PAGESIZE	65	# ifndef PAGESIZE
59	# define PAGESIZE pagesize	66	# define PAGESIZE pagesize
60	# define BOOT_PAGESIZE pagesize = sysconf (_SC_PAGESIZE)	67	# define BOOT_PAGESIZE pagesize = sysconf (_SC_PAGESIZE)
61	static long pagesize;	68	static long pagesize;
62	# else	69	# else
63	# define BOOT_PAGESIZE	70	# define BOOT_PAGESIZE (void)0
64	# endif	71	# endif
		72	#else
		73	# define PAGESIZE 0
		74	# define BOOT_PAGESIZE (void)0
65	#endif	75	#endif
66		76
67	/* The next macro should declare a variable stacklevel that contains and approximation	77	/* 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	78	* to the current C stack pointer. Its property is that it changes with each call
69	* and should be unique. */	79	* and should be unique. */
…		…
79	#endif	89	#endif
80		90
81	#define NOINLINE attribute ((noinline))	91	#define NOINLINE attribute ((noinline))
82		92
83	#include "CoroAPI.h"	93	#include "CoroAPI.h"
84
85	#define TRANSFER_SET_STACKLEVEL 0x8bfbfbfb /* magic cookie */
86		94
87	#ifdef USE_ITHREADS	95	#ifdef USE_ITHREADS
88	static perl_mutex coro_mutex;	96	static perl_mutex coro_mutex;
89	# define LOCK do { MUTEX_LOCK (&coro_mutex); } while (0)	97	# define LOCK do { MUTEX_LOCK (&coro_mutex); } while (0)
90	# define UNLOCK do { MUTEX_UNLOCK (&coro_mutex); } while (0)	98	# define UNLOCK do { MUTEX_UNLOCK (&coro_mutex); } while (0)
91	#else	99	#else
92	# define LOCK (void)0	100	# define LOCK (void)0
93	# define UNLOCK (void)0	101	# define UNLOCK (void)0
94	#endif	102	#endif
95		103
		104	struct io_state
		105	{
		106	int errorno;
		107	I32 laststype;
		108	int laststatval;
		109	Stat_t statcache;
		110	};
		111
96	static struct CoroAPI coroapi;	112	static struct CoroAPI coroapi;
97	static AV main_mainstack; / used to differentiate between $main and others */	113	static AV main_mainstack; / used to differentiate between $main and others */
98	static HV coro_state_stash, coro_stash;	114	static HV coro_state_stash, coro_stash;
99	static SV coro_mortal; / will be freed after next transfer */	115	static SV coro_mortal; / will be freed after next transfer */
100		116
		117	static struct coro_cctx *cctx_first;
		118	static int cctx_count, cctx_idle;
		119
101	/* this is a structure representing a c-level coroutine */	120	/* this is a structure representing a c-level coroutine */
102	typedef struct coro_stack {	121	typedef struct coro_cctx {
103	struct coro_stack *next;	122	struct coro_cctx *next;
104		123
105	/* the stack */	124	/* the stack */
106	void *sptr;	125	void *sptr;
107	long ssize; /* positive == mmap, otherwise malloc */	126	long ssize; /* positive == mmap, otherwise malloc */
108		127
109	/* cpu state */	128	/* cpu state */
110	void idle_sp; / sp of top-level transfer/schedule/cede call */	129	void idle_sp; / sp of top-level transfer/schedule/cede call */
111	JMPENV *top_env;	130	JMPENV *top_env;
112	coro_context cctx;	131	coro_context cctx;
113	} coro_stack;	132
		133	int inuse;
		134
		135	#if USE_VALGRIND
		136	int valgrind_id;
		137	#endif
		138	} coro_cctx;
		139
		140	enum {
		141	CF_RUNNING = 0x0001, /* coroutine is running */
		142	CF_READY = 0x0002, /* coroutine is ready */
		143	CF_NEW = 0x0004, /* ahs never been switched to */
		144	};
114		145
115	/* this is a structure representing a perl-level coroutine */	146	/* this is a structure representing a perl-level coroutine */
116	struct coro {	147	struct coro {
117	/* the c coroutine allocated to this perl coroutine, if any */	148	/* the c coroutine allocated to this perl coroutine, if any */
118	coro_stack *stack;	149	coro_cctx *cctx;
119		150
120	/* data associated with this coroutine (initial args) */	151	/* data associated with this coroutine (initial args) */
121	AV *args;	152	AV *args;
122	int refcnt;	153	int refcnt;
		154	int save; /* CORO_SAVE flags */
		155	int flags; /* CF_ flags */
123		156
124	/* optionally saved, might be zero */	157	/* optionally saved, might be zero */
125	AV *defav;	158	AV defav; / @_ */
126	SV *defsv;	159	SV defsv; / $_ */
127	SV *errsv;	160	SV errsv; / $@ */
		161	SV irssv; / $/ */
		162	SV irssv_sv; / real $/ cache */
128		163
129	/* saved global state not related to stacks */	164	#define VAR(name,type) type name;
130	U8 dowarn;	165	# include "state.h"
131	I32 in_eval;	166	#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		167
163	/* coro process data */	168	/* coro process data */
164	int prio;	169	int prio;
165	};	170	};
166		171
…		…
230		235
231	#define PERL_MAGIC_coro PERL_MAGIC_ext	236	#define PERL_MAGIC_coro PERL_MAGIC_ext
232		237
233	static MGVTBL vtbl_coro = {0, 0, 0, 0, coro_cv_free};	238	static MGVTBL vtbl_coro = {0, 0, 0, 0, coro_cv_free};
234		239
		240	#define CORO_MAGIC(cv) \
		241	SvMAGIC (cv) \
		242	? SvMAGIC (cv)->mg_type == PERL_MAGIC_coro \
		243	? SvMAGIC (cv) \
		244	: mg_find ((SV *)cv, PERL_MAGIC_coro) \
		245	: 0
		246
235	/* the next two functions merely cache the padlists */	247	/* the next two functions merely cache the padlists */
236	static void	248	static void
237	get_padlist (CV *cv)	249	get_padlist (CV *cv)
238	{	250	{
239	MAGIC mg = mg_find ((SV )cv, PERL_MAGIC_coro);	251	MAGIC *mg = CORO_MAGIC (cv);
		252	AV *av;
240		253
241	if (mg && AvFILLp ((AV *)mg->mg_obj) >= 0)	254	if (mg && AvFILLp ((av = (AV *)mg->mg_obj)) >= 0)
242	CvPADLIST (cv) = (AV )av_pop ((AV )mg->mg_obj);	255	CvPADLIST (cv) = (AV *)AvARRAY (av)[AvFILLp (av)--];
243	else	256	else
244	{	257	{
245	#if 0	258	#if 0
246	/* this is probably cleaner, but also slower? */	259	/* this is probably cleaner, but also slower? */
247	CV *cp = Perl_cv_clone (cv);	260	CV *cp = Perl_cv_clone (cv);
…		…
255	}	268	}
256		269
257	static void	270	static void
258	put_padlist (CV *cv)	271	put_padlist (CV *cv)
259	{	272	{
260	MAGIC mg = mg_find ((SV )cv, PERL_MAGIC_coro);	273	MAGIC *mg = CORO_MAGIC (cv);
		274	AV *av;
261		275
262	if (!mg)	276	if (!mg)
263	{	277	{
264	sv_magic ((SV *)cv, 0, PERL_MAGIC_coro, 0, 0);	278	sv_magic ((SV *)cv, 0, PERL_MAGIC_coro, 0, 0);
265	mg = mg_find ((SV *)cv, PERL_MAGIC_coro);	279	mg = mg_find ((SV *)cv, PERL_MAGIC_coro);
266	mg->mg_virtual = &vtbl_coro;	280	mg->mg_virtual = &vtbl_coro;
267	mg->mg_obj = (SV *)newAV ();	281	mg->mg_obj = (SV *)newAV ();
268	}	282	}
269		283
270	av_push ((AV )mg->mg_obj, (SV )CvPADLIST (cv));	284	av = (AV *)mg->mg_obj;
		285
		286	if (AvFILLp (av) >= AvMAX (av))
		287	av_extend (av, AvMAX (av) + 1);
		288
		289	AvARRAY (av)[++AvFILLp (av)] = (SV *)CvPADLIST (cv);
271	}	290	}
272		291
273	#define SB do {	292	#define SB do {
274	#define SE } while (0)	293	#define SE } while (0)
275		294
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	295	#define REPLACE_SV(sv,val) SB SvREFCNT_dec (sv); (sv) = (val); (val) = 0; SE
280		296
281	static void	297	static void
282	load_state(Coro__State c)	298	load_perl (Coro__State c)
283	{	299	{
284	PL_dowarn = c->dowarn;	300	#define VAR(name,type) PL_ ## name = c->name;
285	PL_in_eval = c->in_eval;	301	# include "state.h"
286		302	#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		303
318	if (c->defav) REPLACE_SV (GvAV (PL_defgv), c->defav);	304	if (c->defav) REPLACE_SV (GvAV (PL_defgv), c->defav);
319	if (c->defsv) REPLACE_SV (DEFSV , c->defsv);	305	if (c->defsv) REPLACE_SV (DEFSV , c->defsv);
320	if (c->errsv) REPLACE_SV (ERRSV , c->errsv);	306	if (c->errsv) REPLACE_SV (ERRSV , c->errsv);
		307	if (c->irssv)
		308	{
		309	if (c->irssv == PL_rs \|\| sv_eq (PL_rs, c->irssv))
		310	SvREFCNT_dec (c->irssv);
		311	else
		312	{
		313	REPLACE_SV (PL_rs, c->irssv);
		314	if (!c->irssv_sv) c->irssv_sv = get_sv ("/", 0);
		315	sv_setsv (c->irssv_sv, PL_rs);
		316	}
		317	}
321		318
322	{	319	{
323	dSP;	320	dSP;
324	CV *cv;	321	CV *cv;
325		322
326	/* now do the ugly restore mess */	323	/* now do the ugly restore mess */
327	while ((cv = (CV *)POPs))	324	while ((cv = (CV *)POPs))
328	{	325	{
329	AV padlist = (AV )POPs;
330
331	if (padlist)
332	{
333	put_padlist (cv); /* mark this padlist as available */	326	put_padlist (cv); /* mark this padlist as available */
334	CvPADLIST(cv) = padlist;	327	CvDEPTH (cv) = PTR2IV (POPs);
335	}	328	CvPADLIST (cv) = (AV *)POPs;
336
337	++CvDEPTH(cv);
338	}	329	}
339		330
340	PUTBACK;	331	PUTBACK;
341	}	332	}
342	}	333	}
343		334
344	static void	335	static void
345	save_state(Coro__State c, int flags)	336	save_perl (Coro__State c)
346	{	337	{
347	{	338	{
348	dSP;	339	dSP;
349	I32 cxix = cxstack_ix;	340	I32 cxix = cxstack_ix;
350	PERL_CONTEXT *ccstk = cxstack;	341	PERL_CONTEXT *ccstk = cxstack;
…		…
361	{	352	{
362	while (cxix >= 0)	353	while (cxix >= 0)
363	{	354	{
364	PERL_CONTEXT *cx = &ccstk[cxix--];	355	PERL_CONTEXT *cx = &ccstk[cxix--];
365		356
366	if (CxTYPE(cx) == CXt_SUB)	357	if (CxTYPE (cx) == CXt_SUB)
367	{	358	{
368	CV *cv = cx->blk_sub.cv;	359	CV *cv = cx->blk_sub.cv;
		360
369	if (CvDEPTH(cv))	361	if (CvDEPTH (cv))
370	{	362	{
371	EXTEND (SP, CvDEPTH(cv)*2);	363	EXTEND (SP, 3);
372		364
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));	365	PUSHs ((SV *)CvPADLIST (cv));
		366	PUSHs (INT2PTR (SV *, CvDEPTH (cv)));
381	PUSHs ((SV *)cv);	367	PUSHs ((SV *)cv);
382		368
		369	CvDEPTH (cv) = 0;
383	get_padlist (cv);	370	get_padlist (cv);
384	}	371	}
385	}	372	}
386	#ifdef CXt_FORMAT	373	#ifdef CXt_FORMAT
387	else if (CxTYPE(cx) == CXt_FORMAT)	374	else if (CxTYPE (cx) == CXt_FORMAT)
388	{	375	{
389	/* I never used formats, so how should I know how these are implemented? */	376	/* I never used formats, so how should I know how these are implemented? */
390	/* my bold guess is as a simple, plain sub... */	377	/* my bold guess is as a simple, plain sub... */
391	croak ("CXt_FORMAT not yet handled. Don't switch coroutines from within formats");	378	croak ("CXt_FORMAT not yet handled. Don't switch coroutines from within formats");
392	}	379	}
…		…
402	}	389	}
403		390
404	PUTBACK;	391	PUTBACK;
405	}	392	}
406		393
407	c->defav = flags & TRANSFER_SAVE_DEFAV ? (AV *)SvREFCNT_inc (GvAV (PL_defgv)) : 0;	394	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;	395	c->defsv = c->save & CORO_SAVE_DEFSV ? SvREFCNT_inc (DEFSV) : 0;
409	c->errsv = flags & TRANSFER_SAVE_ERRSV ? SvREFCNT_inc (ERRSV) : 0;	396	c->errsv = c->save & CORO_SAVE_ERRSV ? SvREFCNT_inc (ERRSV) : 0;
		397	c->irssv = c->save & CORO_SAVE_IRSSV ? SvREFCNT_inc (PL_rs) : 0;
410		398
411	c->dowarn = PL_dowarn;	399	#define VAR(name,type)c->name = PL_ ## name;
412	c->in_eval = PL_in_eval;	400	# include "state.h"
413		401	#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	}	402	}
445		403
446	/*	404	/*
447	* allocate various perl stacks. This is an exact copy	405	* allocate various perl stacks. This is an exact copy
448	* of perl.c:init_stacks, except that it uses less memory	406	* of perl.c:init_stacks, except that it uses less memory
…		…
450	* not usually need a lot of stackspace.	408	* not usually need a lot of stackspace.
451	*/	409	*/
452	static void	410	static void
453	coro_init_stacks ()	411	coro_init_stacks ()
454	{	412	{
455	PL_curstackinfo = new_stackinfo(96, 1024/sizeof(PERL_CONTEXT) - 1);	413	PL_curstackinfo = new_stackinfo(128, 1024/sizeof(PERL_CONTEXT));
456	PL_curstackinfo->si_type = PERLSI_MAIN;	414	PL_curstackinfo->si_type = PERLSI_MAIN;
457	PL_curstack = PL_curstackinfo->si_stack;	415	PL_curstack = PL_curstackinfo->si_stack;
458	PL_mainstack = PL_curstack; /* remember in case we switch stacks */	416	PL_mainstack = PL_curstack; /* remember in case we switch stacks */
459		417
460	PL_stack_base = AvARRAY(PL_curstack);	418	PL_stack_base = AvARRAY(PL_curstack);
461	PL_stack_sp = PL_stack_base;	419	PL_stack_sp = PL_stack_base;
462	PL_stack_max = PL_stack_base + AvMAX(PL_curstack);	420	PL_stack_max = PL_stack_base + AvMAX(PL_curstack);
463		421
464	New(50,PL_tmps_stack,96,SV*);	422	New(50,PL_tmps_stack,128,SV*);
465	PL_tmps_floor = -1;	423	PL_tmps_floor = -1;
466	PL_tmps_ix = -1;	424	PL_tmps_ix = -1;
467	PL_tmps_max = 96;	425	PL_tmps_max = 128;
468		426
469	New(54,PL_markstack,16,I32);	427	New(54,PL_markstack,32,I32);
470	PL_markstack_ptr = PL_markstack;	428	PL_markstack_ptr = PL_markstack;
471	PL_markstack_max = PL_markstack + 16;	429	PL_markstack_max = PL_markstack + 32;
472		430
473	#ifdef SET_MARK_OFFSET	431	#ifdef SET_MARK_OFFSET
474	SET_MARK_OFFSET;	432	SET_MARK_OFFSET;
475	#endif	433	#endif
476		434
477	New(54,PL_scopestack,16,I32);	435	New(54,PL_scopestack,32,I32);
478	PL_scopestack_ix = 0;	436	PL_scopestack_ix = 0;
479	PL_scopestack_max = 16;	437	PL_scopestack_max = 32;
480		438
481	New(54,PL_savestack,96,ANY);	439	New(54,PL_savestack,64,ANY);
482	PL_savestack_ix = 0;	440	PL_savestack_ix = 0;
483	PL_savestack_max = 96;	441	PL_savestack_max = 64;
484		442
485	#if !PERL_VERSION_ATLEAST (5,9,0)	443	#if !PERL_VERSION_ATLEAST (5,9,0)
486	New(54,PL_retstack,8,OP*);	444	New(54,PL_retstack,16,OP*);
487	PL_retstack_ix = 0;	445	PL_retstack_ix = 0;
488	PL_retstack_max = 8;	446	PL_retstack_max = 16;
489	#endif	447	#endif
490	}	448	}
491		449
492	/*	450	/*
493	* destroy the stacks, the callchain etc...	451	* destroy the stacks, the callchain etc...
494	*/	452	*/
495	static void	453	static void
496	coro_destroy_stacks()	454	coro_destroy_stacks ()
497	{	455	{
498	if (!IN_DESTRUCT)	456	if (!IN_DESTRUCT)
499	{	457	{
500	/* is this ugly, I ask? */	458	/* is this ugly, I ask? */
501	LEAVE_SCOPE (0);	459	LEAVE_SCOPE (0);
…		…
546	* emulate part of the perl startup here.	504	* emulate part of the perl startup here.
547	*/	505	*/
548		506
549	coro_init_stacks ();	507	coro_init_stacks ();
550		508
		509	PL_curcop = &PL_compiling;
		510	PL_in_eval = EVAL_NULL;
		511	PL_curpm = 0;
		512	PL_localizing = 0;
		513	PL_dirty = 0;
		514	PL_restartop = 0;
		515
551	{	516	{
552	dSP;	517	dSP;
553	LOGOP myop;	518	LOGOP myop;
554		519
555	/PL_curcop = 0;/
556	PL_in_eval = 0;
557	SvREFCNT_dec (GvAV (PL_defgv));	520	SvREFCNT_dec (GvAV (PL_defgv));
558	GvAV (PL_defgv) = coro->args; coro->args = 0;	521	GvAV (PL_defgv) = coro->args; coro->args = 0;
559
560	SPAGAIN;
561		522
562	Zero (&myop, 1, LOGOP);	523	Zero (&myop, 1, LOGOP);
563	myop.op_next = Nullop;	524	myop.op_next = Nullop;
564	myop.op_flags = OPf_WANT_VOID;	525	myop.op_flags = OPf_WANT_VOID;
565		526
		527	PUSHMARK (SP);
		528	XPUSHs ((SV *)get_cv ("Coro::State::_coro_init", FALSE));
		529	PUTBACK;
566	PL_op = (OP *)&myop;	530	PL_op = (OP *)&myop;
567
568	PUSHMARK (SP);
569	PUSHMARK (SP);
570	XPUSHs ((SV *)get_cv ("Coro::State::coro_init", FALSE));
571	PUTBACK;
572	PL_op = PL_ppaddr[OP_ENTERSUB](aTHX);	531	PL_op = PL_ppaddr[OP_ENTERSUB](aTHX);
573	SPAGAIN;	532	SPAGAIN;
574
575	ENTER; /* necessary e.g. for dounwind */
576	}	533	}
		534
		535	ENTER; /* necessary e.g. for dounwind */
577	}	536	}
578		537
579	static void	538	static void
580	free_coro_mortal ()	539	free_coro_mortal ()
581	{	540	{
…		…
584	SvREFCNT_dec (coro_mortal);	543	SvREFCNT_dec (coro_mortal);
585	coro_mortal = 0;	544	coro_mortal = 0;
586	}	545	}
587	}	546	}
588		547
		548	/* inject a fake call to Coro::State::_cctx_init into the execution */
589	static void NOINLINE	549	static void NOINLINE
590	prepare_cctx (coro_stack *cctx)	550	prepare_cctx (coro_cctx *cctx)
591	{	551	{
592	dSP;	552	dSP;
593	LOGOP myop;	553	LOGOP myop;
594		554
595	Zero (&myop, 1, LOGOP);	555	Zero (&myop, 1, LOGOP);
596	myop.op_next = PL_op;	556	myop.op_next = PL_op;
597	myop.op_flags = OPf_WANT_VOID;	557	myop.op_flags = OPf_WANT_VOID \| OPf_STACKED;
598
599	sv_setiv (get_sv ("Coro::State::cctx_stack", FALSE), PTR2IV (cctx));
600		558
601	PUSHMARK (SP);	559	PUSHMARK (SP);
		560	EXTEND (SP, 2);
		561	PUSHs (sv_2mortal (newSViv (PTR2IV (cctx))));
602	XPUSHs ((SV *)get_cv ("Coro::State::cctx_init", FALSE));	562	PUSHs ((SV *)get_cv ("Coro::State::_cctx_init", FALSE));
603	PUTBACK;	563	PUTBACK;
		564	PL_op = (OP *)&myop;
604	PL_restartop = PL_ppaddr[OP_ENTERSUB](aTHX);	565	PL_op = PL_ppaddr[OP_ENTERSUB](aTHX);
605	SPAGAIN;	566	SPAGAIN;
606	}	567	}
607		568
608	static void	569	static void
609	coro_run (void *arg)	570	coro_run (void *arg)
610	{	571	{
611	/* coro_run is the alternative epilogue of transfer() */	572	/* coro_run is the alternative tail of transfer(), so unlock here. */
612	UNLOCK;	573	UNLOCK;
613		574
614	/*	575	/*
615	* this is a _very_ stripped down perl interpreter ;)	576	* this is a _very_ stripped down perl interpreter ;)
616	*/	577	*/
617	PL_top_env = &PL_start_env;	578	PL_top_env = &PL_start_env;
		579
618	/* inject call to cctx_init */	580	/* inject call to cctx_init */
619	prepare_cctx ((coro_stack *)arg);	581	prepare_cctx ((coro_cctx *)arg);
620		582
621	/* 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;
622	perl_run (PL_curinterp);	585	perl_run (PL_curinterp);
623		586
624	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);
625	abort ();	588	abort ();
626	}	589	}
627		590
628	static coro_stack *	591	static coro_cctx *
629	stack_new ()	592	cctx_new ()
630	{	593	{
631	coro_stack *stack;	594	coro_cctx *cctx;
632		595
		596	++cctx_count;
		597
633	New (0, stack, 1, coro_stack);	598	New (0, cctx, 1, coro_cctx);
634		599
635	#if HAVE_MMAP	600	#if HAVE_MMAP
636		601
637	stack->ssize = ((STACKSIZE * sizeof (long) + PAGESIZE - 1) / PAGESIZE + STACKGUARD) * PAGESIZE;	602	cctx->ssize = ((STACKSIZE * sizeof (long) + PAGESIZE - 1) / PAGESIZE + STACKGUARD) * PAGESIZE;
638	/* mmap suppsedly does allocate-on-write for us */	603	/* mmap supposedly does allocate-on-write for us */
639	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);
640		605
641	if (stack->sptr == (void *)-1)	606	if (cctx->sptr == (void *)-1)
642	{	607	{
643	perror ("FATAL: unable to mmap stack for coroutine");	608	perror ("FATAL: unable to mmap stack for coroutine");
644	_exit (EXIT_FAILURE);	609	_exit (EXIT_FAILURE);
645	}	610	}
646		611
647	# if STACKGUARD	612	# if STACKGUARD
648	mprotect (stack->sptr, STACKGUARD * PAGESIZE, PROT_NONE);	613	mprotect (cctx->sptr, STACKGUARD * PAGESIZE, PROT_NONE);
649	# endif	614	# endif
650		615
651	#else	616	#else
652		617
653	stack->ssize = STACKSIZE * (long)sizeof (long);	618	cctx->ssize = STACKSIZE * (long)sizeof (long);
654	New (0, stack->sptr, STACKSIZE, long);	619	New (0, cctx->sptr, STACKSIZE, long);
655		620
656	if (!stack->sptr)	621	if (!cctx->sptr)
657	{	622	{
658	perror (stderr, "FATAL: unable to malloc stack for coroutine");	623	perror ("FATAL: unable to malloc stack for coroutine");
659	_exit (EXIT_FAILURE);	624	_exit (EXIT_FAILURE);
660	}	625	}
661		626
662	#endif	627	#endif
663		628
		629	#if USE_VALGRIND
		630	cctx->valgrind_id = VALGRIND_STACK_REGISTER (
		631	STACKGUARD * PAGESIZE + (char *)cctx->sptr,
		632	cctx->ssize + (char *)cctx->sptr
		633	);
		634	#endif
		635
664	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);
665		637
666	return stack;	638	return cctx;
667	}	639	}
668		640
669	static void	641	static void
670	stack_free (coro_stack *stack)	642	cctx_destroy (coro_cctx *cctx)
671	{	643	{
672	if (!stack)	644	if (!cctx)
673	return;	645	return;
674		646
		647	--cctx_count;
		648
		649	#if USE_VALGRIND
		650	VALGRIND_STACK_DEREGISTER (cctx->valgrind_id);
		651	#endif
		652
675	#if HAVE_MMAP	653	#if HAVE_MMAP
676	munmap (stack->sptr, stack->ssize);	654	munmap (cctx->sptr, cctx->ssize);
677	#else	655	#else
678	Safefree (stack->sptr);	656	Safefree (cctx->sptr);
679	#endif	657	#endif
680		658
681	Safefree (stack);	659	Safefree (cctx);
682	}	660	}
683		661
684	static coro_stack *stack_first;
685	static int cctx_count, cctx_idle;
686
687	static coro_stack *	662	static coro_cctx *
688	stack_get ()	663	cctx_get ()
689	{	664	{
690	coro_stack *stack;	665	coro_cctx *cctx;
691		666
692	if (stack_first)	667	if (cctx_first)
693	{	668	{
		669	cctx = cctx_first;
		670	cctx_first = cctx->next;
694	--cctx_idle;	671	--cctx_idle;
695	stack = stack_first;
696	stack_first = stack->next;
697	}	672	}
698	else	673	else
699	{	674	{
700	++cctx_count;	675	cctx = cctx_new ();
701	stack = stack_new ();
702	PL_op = PL_op->op_next;	676	PL_op = PL_op->op_next;
703	}	677	}
704		678
705	return stack;	679	return cctx;
706	}	680	}
707		681
708	static void	682	static void
709	stack_put (coro_stack *stack)	683	cctx_put (coro_cctx *cctx)
710	{	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
711	++cctx_idle;	696	++cctx_idle;
712	stack->next = stack_first;	697	cctx->next = cctx_first;
713	stack_first = stack;	698	cctx_first = cctx;
714	}	699	}
715		700
716	/* never call directly, always through the coro_state_transfer global variable */	701	/* never call directly, always through the coro_state_transfer global variable */
717	static void NOINLINE	702	static void NOINLINE
718	transfer (struct coro prev, struct coro next, int flags)	703	transfer (struct coro prev, struct coro next)
719	{	704	{
720	dSTACKLEVEL;	705	dSTACKLEVEL;
721		706
722	/* sometimes transfer is only called to set idle_sp */	707	/* sometimes transfer is only called to set idle_sp */
723	if (flags == TRANSFER_SET_STACKLEVEL)	708	if (!next)
724	((coro_stack *)prev)->idle_sp = STACKLEVEL;	709	((coro_cctx *)prev)->idle_sp = STACKLEVEL;
725	else if (prev != next)	710	else if (prev != next)
726	{	711	{
727	coro_stack *prev__stack;	712	coro_cctx *prev__cctx;
		713
		714	if (prev->flags & CF_NEW)
		715	{
		716	/* create a new empty context */
		717	Newz (0, prev->cctx, 1, coro_cctx);
		718	prev->cctx->inuse = 1;
		719	prev->flags &= ~CF_NEW;
		720	prev->flags \|= CF_RUNNING;
		721	}
		722
		723	/TODO: must not croak here /
		724	if (!prev->flags & CF_RUNNING)
		725	croak ("Coro::State::transfer called with non-running prev Coro::State, but can only transfer from running states");
		726
		727	if (next->flags & CF_RUNNING)
		728	croak ("Coro::State::transfer called with running next Coro::State, but can only transfer to inactive states");
		729
		730	prev->flags &= ~CF_RUNNING;
		731	next->flags \|= CF_RUNNING;
728		732
729	LOCK;	733	LOCK;
730		734
731	if (next->mainstack)	735	if (next->flags & CF_NEW)
732	{	736	{
733	/* coroutine already started */	737	/* need to start coroutine */
734	SAVE (prev, flags);	738	next->flags &= ~CF_NEW;
735	LOAD (next);	739	/* first get rid of the old state */
		740	save_perl (prev);
		741	/* setup coroutine call */
		742	setup_coro (next);
		743	/* need a new stack */
		744	assert (!next->stack);
736	}	745	}
737	else	746	else
738	{	747	{
739	/* need to start coroutine */	748	/* coroutine already started */
740	/* first get rid of the old state */	749	save_perl (prev);
741	SAVE (prev, -1);	750	load_perl (next);
742	/* setup coroutine call */
743	setup_coro (next);
744	/* need a stack */
745	next->stack = 0;
746	}	751	}
747		752
748	if (!prev->stack)
749	/* create a new empty context */
750	Newz (0, prev->stack, 1, coro_stack);
751
752	prev__stack = prev->stack;	753	prev__cctx = prev->cctx;
753		754
754	/* possibly "free" the stack */	755	/* possibly "free" the cctx */
755	if (prev__stack->idle_sp == STACKLEVEL)	756	if (prev__cctx->idle_sp == STACKLEVEL)
756	{	757	{
757	stack_put (prev__stack);	758	/* I assume that STACKLEVEL is a stronger indicator than PL_top_env changes */
		759	assert (PL_top_env == prev__cctx->top_env);
		760
758	prev->stack = 0;	761	prev->cctx = 0;
		762
		763	cctx_put (prev__cctx);
		764	prev__cctx->inuse = 0;
759	}	765	}
760		766
761	if (!next->stack)	767	if (!next->cctx)
762	next->stack = stack_get ();
763
764	if (prev__stack != next->stack)
765	{	768	{
		769	next->cctx = cctx_get ();
		770	assert (!next->cctx->inuse);
		771	next->cctx->inuse = 1;
		772	}
		773
		774	if (prev__cctx != next->cctx)
		775	{
766	prev__stack->top_env = PL_top_env;	776	prev__cctx->top_env = PL_top_env;
767	PL_top_env = next->stack->top_env;	777	PL_top_env = next->cctx->top_env;
768	coro_transfer (&prev__stack->cctx, &next->stack->cctx);	778	coro_transfer (&prev__cctx->cctx, &next->cctx->cctx);
769	}	779	}
770		780
771	free_coro_mortal ();	781	free_coro_mortal ();
772		782
773	UNLOCK;	783	UNLOCK;
…		…
775	}	785	}
776		786
777	struct transfer_args	787	struct transfer_args
778	{	788	{
779	struct coro prev, next;	789	struct coro prev, next;
780	int flags;
781	};	790	};
782		791
783	#define TRANSFER(ta) transfer ((ta).prev, (ta).next, (ta).flags)	792	#define TRANSFER(ta) transfer ((ta).prev, (ta).next)
784		793
785	static void	794	static void
786	coro_state_destroy (struct coro *coro)	795	coro_state_destroy (struct coro *coro)
787	{	796	{
788	if (coro->refcnt--)	797	if (coro->refcnt--)
789	return;	798	return;
790		799
791	if (coro->mainstack && coro->mainstack != main_mainstack)	800	if (coro->mainstack && coro->mainstack != main_mainstack)
792	{	801	{
793	struct coro temp;	802	struct coro temp;
		803	Zero (&temp, 1, struct coro);
		804	temp.save = CORO_SAVE_ALL;
794		805
795	SAVE ((&temp), TRANSFER_SAVE_ALL);	806	if (coro->flags & CF_RUNNING)
796	LOAD (coro);	807	croak ("FATAL: tried to destroy currently running coroutine");
		808
		809	save_perl (&temp);
		810	load_perl (coro);
797		811
798	coro_destroy_stacks ();	812	coro_destroy_stacks ();
799		813
800	LOAD ((&temp)); /* this will get rid of defsv etc.. */	814	load_perl (&temp); /* this will get rid of defsv etc.. */
801		815
802	coro->mainstack = 0;	816	coro->mainstack = 0;
803	}	817	}
804		818
805	stack_free (coro->stack);	819	cctx_destroy (coro->cctx);
806	SvREFCNT_dec (coro->args);	820	SvREFCNT_dec (coro->args);
807	Safefree (coro);	821	Safefree (coro);
808	}	822	}
809		823
810	static int	824	static int
…		…
860	assert (mg->mg_type == PERL_MAGIC_ext);	874	assert (mg->mg_type == PERL_MAGIC_ext);
861	return (struct coro *)mg->mg_ptr;	875	return (struct coro *)mg->mg_ptr;
862	}	876	}
863		877
864	static void	878	static void
865	prepare_transfer (struct transfer_args ta, SV prev, SV *next, int flags)	879	prepare_transfer (struct transfer_args ta, SV prev_sv, SV *next_sv)
866	{	880	{
867	ta->prev = SvSTATE (prev);	881	ta->prev = SvSTATE (prev_sv);
868	ta->next = SvSTATE (next);	882	ta->next = SvSTATE (next_sv);
869	ta->flags = flags;
870	}	883	}
871		884
872	static void	885	static void
873	api_transfer (SV prev, SV next, int flags)	886	api_transfer (SV prev_sv, SV next_sv)
874	{	887	{
875	dTHX;
876	struct transfer_args ta;	888	struct transfer_args ta;
877		889
878	prepare_transfer (&ta, prev, next, flags);	890	prepare_transfer (&ta, prev_sv, next_sv);
879	TRANSFER (ta);	891	TRANSFER (ta);
		892	}
		893
		894	static int
		895	api_save (SV *coro_sv, int new_save)
		896	{
		897	struct coro *coro = SvSTATE (coro_sv);
		898	int old_save = coro->save;
		899
		900	if (new_save >= 0)
		901	coro->save = new_save;
		902
		903	return old_save;
880	}	904	}
881		905
882	/ Coro ******************************************************************/	906	/ Coro ******************************************************************/
883		907
884	#define PRIO_MAX 3	908	#define PRIO_MAX 3
…		…
887	#define PRIO_LOW -1	911	#define PRIO_LOW -1
888	#define PRIO_IDLE -3	912	#define PRIO_IDLE -3
889	#define PRIO_MIN -4	913	#define PRIO_MIN -4
890		914
891	/* for Coro.pm */	915	/* for Coro.pm */
892	static GV coro_current, coro_idle;	916	static SV *coro_current;
893	static AV *coro_ready [PRIO_MAX-PRIO_MIN+1];	917	static AV *coro_ready [PRIO_MAX-PRIO_MIN+1];
894	static int coro_nready;	918	static int coro_nready;
895		919
896	static void	920	static void
897	coro_enq (SV *sv)	921	coro_enq (SV *coro_sv)
898	{	922	{
899	int prio;
900
901	if (SvTYPE (sv) != SVt_PVHV)
902	croak ("Coro::ready tried to enqueue something that is not a coroutine");
903
904	prio = SvSTATE (sv)->prio;
905
906	av_push (coro_ready [prio - PRIO_MIN], sv);	923	av_push (coro_ready [SvSTATE (coro_sv)->prio - PRIO_MIN], coro_sv);
907	coro_nready++;	924	coro_nready++;
908	}	925	}
909		926
910	static SV *	927	static SV *
911	coro_deq (int min_prio)	928	coro_deq (int min_prio)
…		…
924	}	941	}
925		942
926	return 0;	943	return 0;
927	}	944	}
928		945
929	static void	946	static int
930	api_ready (SV *coro)	947	api_ready (SV *coro_sv)
931	{	948	{
932	dTHX;	949	struct coro *coro;
933		950
934	if (SvROK (coro))	951	if (SvROK (coro_sv))
935	coro = SvRV (coro);	952	coro_sv = SvRV (coro_sv);
		953
		954	coro = SvSTATE (coro_sv);
		955
		956	if (coro->flags & CF_READY)
		957	return 0;
		958
		959	#if 0 /* this is actually harmless */
		960	if (coro->flags & CF_RUNNING)
		961	croak ("Coro::ready called on currently running coroutine");
		962	#endif
		963
		964	coro->flags \|= CF_READY;
936		965
937	LOCK;	966	LOCK;
938	coro_enq (SvREFCNT_inc (coro));	967	coro_enq (SvREFCNT_inc (coro_sv));
939	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;
940	}	977	}
941		978
942	static void	979	static void
943	prepare_schedule (struct transfer_args *ta)	980	prepare_schedule (struct transfer_args *ta)
944	{	981	{
945	SV current, prev, *next;	982	SV prev, next;
946
947	current = GvSV (coro_current);
948		983
949	for (;;)	984	for (;;)
950	{	985	{
951	LOCK;	986	LOCK;
952	next = coro_deq (PRIO_MIN);	987	next = coro_deq (PRIO_MIN);
…		…
961	ENTER;	996	ENTER;
962	SAVETMPS;	997	SAVETMPS;
963		998
964	PUSHMARK (SP);	999	PUSHMARK (SP);
965	PUTBACK;	1000	PUTBACK;
966	call_sv (GvSV (coro_idle), G_DISCARD);	1001	call_sv (get_sv ("Coro::idle", FALSE), G_DISCARD);
967		1002
968	FREETMPS;	1003	FREETMPS;
969	LEAVE;	1004	LEAVE;
970	}	1005	}
971	}	1006	}
972		1007
973	prev = SvRV (current);	1008	prev = SvRV (coro_current);
974	SvRV (current) = next;	1009	SvRV_set (coro_current, next);
975		1010
976	/* free this only after the transfer */	1011	/* free this only after the transfer */
977	LOCK;	1012	LOCK;
978	free_coro_mortal ();	1013	free_coro_mortal ();
979	UNLOCK;	1014	UNLOCK;
980	coro_mortal = prev;	1015	coro_mortal = prev;
981		1016
		1017	assert (!SvROK(prev));//D
		1018	assert (!SvROK(next));//D
		1019
982	ta->prev = SvSTATE (prev);	1020	ta->prev = SvSTATE (prev);
983	ta->next = SvSTATE (next);	1021	ta->next = SvSTATE (next);
984	ta->flags = TRANSFER_SAVE_ALL;	1022
		1023	assert (ta->next->flags & CF_READY);
		1024	ta->next->flags &= ~CF_READY;
985	}	1025	}
986		1026
987	static void	1027	static void
988	prepare_cede (struct transfer_args *ta)	1028	prepare_cede (struct transfer_args *ta)
989	{	1029	{
990	LOCK;	1030	api_ready (coro_current);
991	coro_enq (SvREFCNT_inc (SvRV (GvSV (coro_current))));
992	UNLOCK;
993		1031
994	prepare_schedule (ta);	1032	prepare_schedule (ta);
995	}	1033	}
996		1034
997	static void	1035	static void
998	api_schedule (void)	1036	api_schedule (void)
999	{	1037	{
1000	dTHX;
1001	struct transfer_args ta;	1038	struct transfer_args ta;
1002		1039
1003	prepare_schedule (&ta);	1040	prepare_schedule (&ta);
1004	TRANSFER (ta);	1041	TRANSFER (ta);
1005	}	1042	}
1006		1043
1007	static void	1044	static void
1008	api_cede (void)	1045	api_cede (void)
1009	{	1046	{
1010	dTHX;
1011	struct transfer_args ta;	1047	struct transfer_args ta;
1012		1048
1013	prepare_cede (&ta);	1049	prepare_cede (&ta);
1014	TRANSFER (ta);	1050	TRANSFER (ta);
1015	}	1051	}
…		…
1025	#endif	1061	#endif
1026	BOOT_PAGESIZE;	1062	BOOT_PAGESIZE;
1027		1063
1028	coro_state_stash = gv_stashpv ("Coro::State", TRUE);	1064	coro_state_stash = gv_stashpv ("Coro::State", TRUE);
1029		1065
1030	newCONSTSUB (coro_state_stash, "SAVE_DEFAV", newSViv (TRANSFER_SAVE_DEFAV));	1066	newCONSTSUB (coro_state_stash, "SAVE_DEFAV", newSViv (CORO_SAVE_DEFAV));
1031	newCONSTSUB (coro_state_stash, "SAVE_DEFSV", newSViv (TRANSFER_SAVE_DEFSV));	1067	newCONSTSUB (coro_state_stash, "SAVE_DEFSV", newSViv (CORO_SAVE_DEFSV));
1032	newCONSTSUB (coro_state_stash, "SAVE_ERRSV", newSViv (TRANSFER_SAVE_ERRSV));	1068	newCONSTSUB (coro_state_stash, "SAVE_ERRSV", newSViv (CORO_SAVE_ERRSV));
		1069	newCONSTSUB (coro_state_stash, "SAVE_IRSSV", newSViv (CORO_SAVE_IRSSV));
		1070	newCONSTSUB (coro_state_stash, "SAVE_ALL", newSViv (CORO_SAVE_ALL));
1033		1071
1034	main_mainstack = PL_mainstack;	1072	main_mainstack = PL_mainstack;
1035		1073
1036	coroapi.ver = CORO_API_VERSION;	1074	coroapi.ver = CORO_API_VERSION;
1037	coroapi.transfer = api_transfer;	1075	coroapi.transfer = api_transfer;
…		…
1047	HV *hv;	1085	HV *hv;
1048	int i;	1086	int i;
1049		1087
1050	Newz (0, coro, 1, struct coro);	1088	Newz (0, coro, 1, struct coro);
1051	coro->args = newAV ();	1089	coro->args = newAV ();
		1090	coro->save = CORO_SAVE_ALL;
		1091	coro->flags = CF_NEW;
1052		1092
1053	hv = newHV ();	1093	hv = newHV ();
1054	sv_magicext ((SV )hv, 0, PERL_MAGIC_ext, &coro_state_vtbl, (char )coro, 0)->mg_flags \|= MGf_DUP;	1094	sv_magicext ((SV )hv, 0, PERL_MAGIC_ext, &coro_state_vtbl, (char )coro, 0)->mg_flags \|= MGf_DUP;
1055	RETVAL = sv_bless (newRV_noinc ((SV *)hv), gv_stashpv (klass, 1));	1095	RETVAL = sv_bless (newRV_noinc ((SV *)hv), gv_stashpv (klass, 1));
1056		1096
1057	for (i = 1; i < items; i++)	1097	for (i = 1; i < items; i++)
1058	av_push (coro->args, newSVsv (ST (i)));	1098	av_push (coro->args, newSVsv (ST (i)));
1059
1060	/coro->mainstack = 0; //actual work is done inside transfer /
1061	/coro->stack = 0;/
1062	}	1099	}
1063	OUTPUT:	1100	OUTPUT:
		1101	RETVAL
		1102
		1103	int
		1104	save (SV *coro, int new_save = -1)
		1105	CODE:
		1106	RETVAL = api_save (coro, new_save);
		1107	OUTPUT:
1064	RETVAL	1108	RETVAL
1065		1109
1066	void	1110	void
1067	_set_stacklevel (...)	1111	_set_stacklevel (...)
1068	ALIAS:	1112	ALIAS:
1069	Coro::State::transfer = 1	1113	Coro::State::transfer = 1
1070	Coro::schedule = 2	1114	Coro::schedule = 2
1071	Coro::cede = 3	1115	Coro::cede = 3
1072	Coro::Cont::yield = 4
1073	CODE:	1116	CODE:
1074	{	1117	{
1075	struct transfer_args ta;	1118	struct transfer_args ta;
1076		1119
1077	switch (ix)	1120	switch (ix)
1078	{	1121	{
1079	case 0:	1122	case 0:
1080	ta.prev = (struct coro )INT2PTR (coro_stack , SvIV (ST (0)));	1123	ta.prev = (struct coro )INT2PTR (coro_cctx , SvIV (ST (0)));
1081	ta.next = 0;	1124	ta.next = 0;
1082	ta.flags = TRANSFER_SET_STACKLEVEL;
1083	break;	1125	break;
1084		1126
1085	case 1:	1127	case 1:
1086	if (items != 3)	1128	if (items != 2)
1087	croak ("Coro::State::transfer(prev,next,flags) expects three arguments, not %d", items);	1129	croak ("Coro::State::transfer (prev,next) expects two arguments, not %d", items);
1088		1130
1089	prepare_transfer (&ta, ST (0), ST (1), SvIV (ST (2)));	1131	prepare_transfer (&ta, ST (0), ST (1));
1090	break;	1132	break;
1091		1133
1092	case 2:	1134	case 2:
1093	prepare_schedule (&ta);	1135	prepare_schedule (&ta);
1094	break;	1136	break;
1095		1137
1096	case 3:	1138	case 3:
1097	prepare_cede (&ta);	1139	prepare_cede (&ta);
1098	break;	1140	break;
1099
1100	case 4:
1101	{
1102	SV *yieldstack;
1103	SV *sv;
1104	AV *defav = GvAV (PL_defgv);
1105
1106	yieldstack = *hv_fetch (
1107	(HV *)SvRV (GvSV (coro_current)),
1108	"yieldstack", sizeof ("yieldstack") - 1,
1109	0
1110	);
1111
1112	/* set up @_ -- ugly */
1113	av_clear (defav);
1114	av_fill (defav, items - 1);
1115	while (items--)
1116	av_store (defav, items, SvREFCNT_inc (ST(items)));
1117
1118	sv = av_pop ((AV *)SvRV (yieldstack));
1119	ta.prev = SvSTATE (av_fetch ((AV )SvRV (sv), 0, 0));
1120	ta.next = SvSTATE (av_fetch ((AV )SvRV (sv), 1, 0));
1121	ta.flags = 0;
1122	SvREFCNT_dec (sv);
1123	}
1124	break;
1125
1126	}	1141	}
1127		1142
1128	TRANSFER (ta);	1143	TRANSFER (ta);
1129	}	1144	}
1130		1145
…		…
1145	int code	1160	int code
1146	PROTOTYPE: $	1161	PROTOTYPE: $
1147	CODE:	1162	CODE:
1148	_exit (code);	1163	_exit (code);
1149		1164
		1165	int
		1166	cctx_count ()
		1167	CODE:
		1168	RETVAL = cctx_count;
		1169	OUTPUT:
		1170	RETVAL
		1171
		1172	int
		1173	cctx_idle ()
		1174	CODE:
		1175	RETVAL = cctx_idle;
		1176	OUTPUT:
		1177	RETVAL
		1178
1150	MODULE = Coro::State PACKAGE = Coro	1179	MODULE = Coro::State PACKAGE = Coro
1151		1180
1152	BOOT:	1181	BOOT:
1153	{	1182	{
1154	int i;	1183	int i;
…		…
1160	newCONSTSUB (coro_stash, "PRIO_NORMAL", newSViv (PRIO_NORMAL));	1189	newCONSTSUB (coro_stash, "PRIO_NORMAL", newSViv (PRIO_NORMAL));
1161	newCONSTSUB (coro_stash, "PRIO_LOW", newSViv (PRIO_LOW));	1190	newCONSTSUB (coro_stash, "PRIO_LOW", newSViv (PRIO_LOW));
1162	newCONSTSUB (coro_stash, "PRIO_IDLE", newSViv (PRIO_IDLE));	1191	newCONSTSUB (coro_stash, "PRIO_IDLE", newSViv (PRIO_IDLE));
1163	newCONSTSUB (coro_stash, "PRIO_MIN", newSViv (PRIO_MIN));	1192	newCONSTSUB (coro_stash, "PRIO_MIN", newSViv (PRIO_MIN));
1164		1193
1165	coro_current = gv_fetchpv ("Coro::current", TRUE, SVt_PV);	1194	coro_current = get_sv ("Coro::current", FALSE);
1166	coro_idle = gv_fetchpv ("Coro::idle" , TRUE, SVt_PV);	1195	SvREADONLY_on (coro_current);
1167		1196
1168	for (i = PRIO_MAX - PRIO_MIN + 1; i--; )	1197	for (i = PRIO_MAX - PRIO_MIN + 1; i--; )
1169	coro_ready[i] = newAV ();	1198	coro_ready[i] = newAV ();
1170		1199
1171	{	1200	{
1172	SV *sv = perl_get_sv("Coro::API", 1);	1201	SV *sv = perl_get_sv("Coro::API", 1);
1173		1202
1174	coroapi.schedule = api_schedule;	1203	coroapi.schedule = api_schedule;
		1204	coroapi.save = api_save;
1175	coroapi.cede = api_cede;	1205	coroapi.cede = api_cede;
1176	coroapi.ready = api_ready;	1206	coroapi.ready = api_ready;
		1207	coroapi.is_ready = api_is_ready;
1177	coroapi.nready = &coro_nready;	1208	coroapi.nready = &coro_nready;
1178	coroapi.current = coro_current;	1209	coroapi.current = coro_current;
1179		1210
1180	GCoroAPI = &coroapi;	1211	GCoroAPI = &coroapi;
1181	sv_setiv (sv, (IV)&coroapi);	1212	sv_setiv (sv, (IV)&coroapi);
1182	SvREADONLY_on (sv);	1213	SvREADONLY_on (sv);
1183	}	1214	}
1184	}	1215	}
		1216
		1217	void
		1218	_set_current (SV *current)
		1219	PROTOTYPE: $
		1220	CODE:
		1221	SvREFCNT_dec (SvRV (coro_current));
		1222	SvRV_set (coro_current, SvREFCNT_inc (SvRV (current)));
1185		1223
1186	int	1224	int
1187	prio (Coro::State coro, int newprio = 0)	1225	prio (Coro::State coro, int newprio = 0)
1188	ALIAS:	1226	ALIAS:
1189	nice = 1	1227	nice = 1
…		…
1201		1239
1202	coro->prio = newprio;	1240	coro->prio = newprio;
1203	}	1241	}
1204	}	1242	}
1205		1243
1206	void	1244	SV *
1207	ready (SV *self)	1245	ready (SV *self)
1208	PROTOTYPE: $	1246	PROTOTYPE: $
1209	CODE:	1247	CODE:
1210	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
1211		1259
1212	int	1260	int
1213	nready (...)	1261	nready (...)
1214	PROTOTYPE:	1262	PROTOTYPE:
1215	CODE:	1263	CODE:
…		…
1221		1269
1222	SV *	1270	SV *
1223	_get_state ()	1271	_get_state ()
1224	CODE:	1272	CODE:
1225	{	1273	{
1226	struct {	1274	struct io_state *data;
1227	int errorno;
1228	int laststype;
1229	int laststatval;
1230	Stat_t statcache;
1231	} data;
1232		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
1233	data.errorno = errno;	1281	data->errorno = errno;
1234	data.laststype = PL_laststype;	1282	data->laststype = PL_laststype;
1235	data.laststatval = PL_laststatval;	1283	data->laststatval = PL_laststatval;
1236	data.statcache = PL_statcache;	1284	data->statcache = PL_statcache;
1237
1238	RETVAL = newSVpvn ((char *)&data, sizeof data);
1239	}	1285	}
1240	OUTPUT:	1286	OUTPUT:
1241	RETVAL	1287	RETVAL
1242		1288
1243	void	1289	void
1244	_set_state (char *data_)	1290	_set_state (char *data_)
1245	PROTOTYPE: $	1291	PROTOTYPE: $
1246	CODE:	1292	CODE:
1247	{	1293	{
1248	struct {	1294	struct io_state data = (void )data_;
1249	int errorno;
1250	int laststype;
1251	int laststatval;
1252	Stat_t statcache;
1253	} data = (void )data_;
1254		1295
1255	errno = data->errorno;	1296	errno = data->errorno;
1256	PL_laststype = data->laststype;	1297	PL_laststype = data->laststype;
1257	PL_laststatval = data->laststatval;	1298	PL_laststatval = data->laststatval;
1258	PL_statcache = data->statcache;	1299	PL_statcache = data->statcache;
1259	}	1300	}
		1301

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Comparing Coro/Coro/State.xs (file contents): Revision 1.102 by root, Mon Nov 27 01:28:03 2006 UTC vs. Revision 1.123 by root, Mon Dec 4 21:56:00 2006 UTC

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Comparing Coro/Coro/State.xs (file contents):
Revision 1.102 by root, Mon Nov 27 01:28:03 2006 UTC vs.
Revision 1.123 by root, Mon Dec 4 21:56:00 2006 UTC