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

Comparing Coro/Coro/State.xs (file contents):
Revision 1.103 by root, Mon Nov 27 01:33:30 2006 UTC vs.
Revision 1.124 by root, Tue Dec 5 12:50:04 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) \
…		…
33	# endif	40	# endif
34	#endif	41	#endif
35		42
36	#include <stdio.h>	43	#include <stdio.h>
37	#include <errno.h>	44	#include <errno.h>
		45	#include <assert.h>
38		46
39	#if !__i386 && !__x86_64 && !__powerpc && !__m68k && !__alpha && !__mips && !__sparc64	47	#if !__i386 && !__x86_64 && !__powerpc && !__m68k && !__alpha && !__mips && !__sparc64
40	# undef STACKGUARD	48	# undef STACKGUARD
41	#endif	49	#endif
42		50
…		…
58	# ifndef PAGESIZE	66	# ifndef PAGESIZE
59	# define PAGESIZE pagesize	67	# define PAGESIZE pagesize
60	# define BOOT_PAGESIZE pagesize = sysconf (_SC_PAGESIZE)	68	# define BOOT_PAGESIZE pagesize = sysconf (_SC_PAGESIZE)
61	static long pagesize;	69	static long pagesize;
62	# else	70	# else
63	# define BOOT_PAGESIZE	71	# define BOOT_PAGESIZE (void)0
64	# endif	72	# endif
		73	#else
		74	# define PAGESIZE 0
		75	# define BOOT_PAGESIZE (void)0
65	#endif	76	#endif
66		77
67	/* The next macro should declare a variable stacklevel that contains and approximation	78	/* 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	79	* to the current C stack pointer. Its property is that it changes with each call
69	* and should be unique. */	80	* and should be unique. */
…		…
79	#endif	90	#endif
80		91
81	#define NOINLINE attribute ((noinline))	92	#define NOINLINE attribute ((noinline))
82		93
83	#include "CoroAPI.h"	94	#include "CoroAPI.h"
84
85	#define TRANSFER_SET_STACKLEVEL 0x8bfbfbfb /* magic cookie */
86		95
87	#ifdef USE_ITHREADS	96	#ifdef USE_ITHREADS
88	static perl_mutex coro_mutex;	97	static perl_mutex coro_mutex;
89	# define LOCK do { MUTEX_LOCK (&coro_mutex); } while (0)	98	# define LOCK do { MUTEX_LOCK (&coro_mutex); } while (0)
90	# define UNLOCK do { MUTEX_UNLOCK (&coro_mutex); } while (0)	99	# define UNLOCK do { MUTEX_UNLOCK (&coro_mutex); } while (0)
91	#else	100	#else
92	# define LOCK (void)0	101	# define LOCK (void)0
93	# define UNLOCK (void)0	102	# define UNLOCK (void)0
94	#endif	103	#endif
95		104
		105	struct io_state
		106	{
		107	int errorno;
		108	I32 laststype;
		109	int laststatval;
		110	Stat_t statcache;
		111	};
		112
96	static struct CoroAPI coroapi;	113	static struct CoroAPI coroapi;
97	static AV main_mainstack; / used to differentiate between $main and others */	114	static AV main_mainstack; / used to differentiate between $main and others */
98	static HV coro_state_stash, coro_stash;	115	static HV coro_state_stash, coro_stash;
99	static SV coro_mortal; / will be freed after next transfer */	116	static SV coro_mortal; / will be freed after next transfer */
100		117
		118	static struct coro_cctx *cctx_first;
		119	static int cctx_count, cctx_idle;
		120
101	/* this is a structure representing a c-level coroutine */	121	/* this is a structure representing a c-level coroutine */
102	typedef struct coro_stack {	122	typedef struct coro_cctx {
103	struct coro_stack *next;	123	struct coro_cctx *next;
104		124
105	/* the stack */	125	/* the stack */
106	void *sptr;	126	void *sptr;
107	long ssize; /* positive == mmap, otherwise malloc */	127	long ssize; /* positive == mmap, otherwise malloc */
108		128
109	/* cpu state */	129	/* cpu state */
110	void idle_sp; / sp of top-level transfer/schedule/cede call */	130	void idle_sp; / sp of top-level transfer/schedule/cede call */
111	JMPENV *top_env;	131	JMPENV *top_env;
112	coro_context cctx;	132	coro_context cctx;
113	} coro_stack;	133
		134	int inuse;
		135
		136	#if USE_VALGRIND
		137	int valgrind_id;
		138	#endif
		139	} coro_cctx;
		140
		141	enum {
		142	CF_RUNNING = 0x0001, /* coroutine is running */
		143	CF_READY = 0x0002, /* coroutine is ready */
		144	CF_NEW = 0x0004, /* ahs never been switched to */
		145	};
114		146
115	/* this is a structure representing a perl-level coroutine */	147	/* this is a structure representing a perl-level coroutine */
116	struct coro {	148	struct coro {
117	/* the c coroutine allocated to this perl coroutine, if any */	149	/* the c coroutine allocated to this perl coroutine, if any */
118	coro_stack *stack;	150	coro_cctx *cctx;
119		151
120	/* data associated with this coroutine (initial args) */	152	/* data associated with this coroutine (initial args) */
121	AV *args;	153	AV *args;
122	int refcnt;	154	int refcnt;
		155	int save; /* CORO_SAVE flags */
		156	int flags; /* CF_ flags */
123		157
124	/* optionally saved, might be zero */	158	/* optionally saved, might be zero */
125	AV *defav;	159	AV defav; / @_ */
126	SV *defsv;	160	SV defsv; / $_ */
127	SV *errsv;	161	SV errsv; / $@ */
		162	SV irssv; / $/ */
		163	SV irssv_sv; / real $/ cache */
128		164
129	/* saved global state not related to stacks */	165	#define VAR(name,type) type name;
130	U8 dowarn;	166	# include "state.h"
131	I32 in_eval;	167	#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		168
163	/* coro process data */	169	/* coro process data */
164	int prio;	170	int prio;
165	};	171	};
166		172
…		…
230		236
231	#define PERL_MAGIC_coro PERL_MAGIC_ext	237	#define PERL_MAGIC_coro PERL_MAGIC_ext
232		238
233	static MGVTBL vtbl_coro = {0, 0, 0, 0, coro_cv_free};	239	static MGVTBL vtbl_coro = {0, 0, 0, 0, coro_cv_free};
234		240
		241	#define CORO_MAGIC(cv) \
		242	SvMAGIC (cv) \
		243	? SvMAGIC (cv)->mg_type == PERL_MAGIC_coro \
		244	? SvMAGIC (cv) \
		245	: mg_find ((SV *)cv, PERL_MAGIC_coro) \
		246	: 0
		247
235	/* the next two functions merely cache the padlists */	248	/* the next two functions merely cache the padlists */
236	static void	249	static void
237	get_padlist (CV *cv)	250	get_padlist (CV *cv)
238	{	251	{
239	MAGIC mg = mg_find ((SV )cv, PERL_MAGIC_coro);	252	MAGIC *mg = CORO_MAGIC (cv);
		253	AV *av;
240		254
241	if (mg && AvFILLp ((AV *)mg->mg_obj) >= 0)	255	if (mg && AvFILLp ((av = (AV *)mg->mg_obj)) >= 0)
242	CvPADLIST (cv) = (AV )av_pop ((AV )mg->mg_obj);	256	CvPADLIST (cv) = (AV *)AvARRAY (av)[AvFILLp (av)--];
243	else	257	else
244	{	258	{
245	#if 0	259	#if 0
246	/* this is probably cleaner, but also slower? */	260	/* this is probably cleaner, but also slower? */
247	CV *cp = Perl_cv_clone (cv);	261	CV *cp = Perl_cv_clone (cv);
…		…
255	}	269	}
256		270
257	static void	271	static void
258	put_padlist (CV *cv)	272	put_padlist (CV *cv)
259	{	273	{
260	MAGIC mg = mg_find ((SV )cv, PERL_MAGIC_coro);	274	MAGIC *mg = CORO_MAGIC (cv);
		275	AV *av;
261		276
262	if (!mg)	277	if (!mg)
263	{	278	{
264	sv_magic ((SV *)cv, 0, PERL_MAGIC_coro, 0, 0);	279	sv_magic ((SV *)cv, 0, PERL_MAGIC_coro, 0, 0);
265	mg = mg_find ((SV *)cv, PERL_MAGIC_coro);	280	mg = mg_find ((SV *)cv, PERL_MAGIC_coro);
266	mg->mg_virtual = &vtbl_coro;	281	mg->mg_virtual = &vtbl_coro;
267	mg->mg_obj = (SV *)newAV ();	282	mg->mg_obj = (SV *)newAV ();
268	}	283	}
269		284
270	av_push ((AV )mg->mg_obj, (SV )CvPADLIST (cv));	285	av = (AV *)mg->mg_obj;
		286
		287	if (AvFILLp (av) >= AvMAX (av))
		288	av_extend (av, AvMAX (av) + 1);
		289
		290	AvARRAY (av)[++AvFILLp (av)] = (SV *)CvPADLIST (cv);
271	}	291	}
272		292
273	#define SB do {	293	#define SB do {
274	#define SE } while (0)	294	#define SE } while (0)
275		295
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	296	#define REPLACE_SV(sv,val) SB SvREFCNT_dec (sv); (sv) = (val); (val) = 0; SE
280		297
281	static void	298	static void
282	load_state(Coro__State c)	299	load_perl (Coro__State c)
283	{	300	{
284	PL_dowarn = c->dowarn;	301	#define VAR(name,type) PL_ ## name = c->name;
285	PL_in_eval = c->in_eval;	302	# include "state.h"
286		303	#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		304
318	if (c->defav) REPLACE_SV (GvAV (PL_defgv), c->defav);	305	if (c->defav) REPLACE_SV (GvAV (PL_defgv), c->defav);
319	if (c->defsv) REPLACE_SV (DEFSV , c->defsv);	306	if (c->defsv) REPLACE_SV (DEFSV , c->defsv);
320	if (c->errsv) REPLACE_SV (ERRSV , c->errsv);	307	if (c->errsv) REPLACE_SV (ERRSV , c->errsv);
		308	if (c->irssv)
		309	{
		310	if (c->irssv == PL_rs \|\| sv_eq (PL_rs, c->irssv))
		311	SvREFCNT_dec (c->irssv);
		312	else
		313	{
		314	REPLACE_SV (PL_rs, c->irssv);
		315	if (!c->irssv_sv) c->irssv_sv = get_sv ("/", 0);
		316	sv_setsv (c->irssv_sv, PL_rs);
		317	}
		318	}
321		319
322	{	320	{
323	dSP;	321	dSP;
324	CV *cv;	322	CV *cv;
325		323
326	/* now do the ugly restore mess */	324	/* now do the ugly restore mess */
327	while ((cv = (CV *)POPs))	325	while ((cv = (CV *)POPs))
328	{	326	{
329	AV padlist = (AV )POPs;
330
331	if (padlist)
332	{
333	put_padlist (cv); /* mark this padlist as available */	327	put_padlist (cv); /* mark this padlist as available */
334	CvPADLIST(cv) = padlist;	328	CvDEPTH (cv) = PTR2IV (POPs);
335	}	329	CvPADLIST (cv) = (AV *)POPs;
336
337	++CvDEPTH(cv);
338	}	330	}
339		331
340	PUTBACK;	332	PUTBACK;
341	}	333	}
342	}	334	}
343		335
344	static void	336	static void
345	save_state(Coro__State c, int flags)	337	save_perl (Coro__State c)
346	{	338	{
347	{	339	{
348	dSP;	340	dSP;
349	I32 cxix = cxstack_ix;	341	I32 cxix = cxstack_ix;
350	PERL_CONTEXT *ccstk = cxstack;	342	PERL_CONTEXT *ccstk = cxstack;
…		…
361	{	353	{
362	while (cxix >= 0)	354	while (cxix >= 0)
363	{	355	{
364	PERL_CONTEXT *cx = &ccstk[cxix--];	356	PERL_CONTEXT *cx = &ccstk[cxix--];
365		357
366	if (CxTYPE(cx) == CXt_SUB)	358	if (CxTYPE (cx) == CXt_SUB)
367	{	359	{
368	CV *cv = cx->blk_sub.cv;	360	CV *cv = cx->blk_sub.cv;
		361
369	if (CvDEPTH(cv))	362	if (CvDEPTH (cv))
370	{	363	{
371	EXTEND (SP, CvDEPTH(cv)*2);	364	EXTEND (SP, 3);
372		365
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));	366	PUSHs ((SV *)CvPADLIST (cv));
		367	PUSHs (INT2PTR (SV *, CvDEPTH (cv)));
381	PUSHs ((SV *)cv);	368	PUSHs ((SV *)cv);
382		369
		370	CvDEPTH (cv) = 0;
383	get_padlist (cv);	371	get_padlist (cv);
384	}	372	}
385	}	373	}
386	#ifdef CXt_FORMAT	374	#ifdef CXt_FORMAT
387	else if (CxTYPE(cx) == CXt_FORMAT)	375	else if (CxTYPE (cx) == CXt_FORMAT)
388	{	376	{
389	/* I never used formats, so how should I know how these are implemented? */	377	/* I never used formats, so how should I know how these are implemented? */
390	/* my bold guess is as a simple, plain sub... */	378	/* my bold guess is as a simple, plain sub... */
391	croak ("CXt_FORMAT not yet handled. Don't switch coroutines from within formats");	379	croak ("CXt_FORMAT not yet handled. Don't switch coroutines from within formats");
392	}	380	}
…		…
402	}	390	}
403		391
404	PUTBACK;	392	PUTBACK;
405	}	393	}
406		394
407	c->defav = flags & TRANSFER_SAVE_DEFAV ? (AV *)SvREFCNT_inc (GvAV (PL_defgv)) : 0;	395	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;	396	c->defsv = c->save & CORO_SAVE_DEFSV ? SvREFCNT_inc (DEFSV) : 0;
409	c->errsv = flags & TRANSFER_SAVE_ERRSV ? SvREFCNT_inc (ERRSV) : 0;	397	c->errsv = c->save & CORO_SAVE_ERRSV ? SvREFCNT_inc (ERRSV) : 0;
		398	c->irssv = c->save & CORO_SAVE_IRSSV ? SvREFCNT_inc (PL_rs) : 0;
410		399
411	c->dowarn = PL_dowarn;	400	#define VAR(name,type)c->name = PL_ ## name;
412	c->in_eval = PL_in_eval;	401	# include "state.h"
413		402	#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	}	403	}
445		404
446	/*	405	/*
447	* allocate various perl stacks. This is an exact copy	406	* allocate various perl stacks. This is an exact copy
448	* of perl.c:init_stacks, except that it uses less memory	407	* of perl.c:init_stacks, except that it uses less memory
…		…
450	* not usually need a lot of stackspace.	409	* not usually need a lot of stackspace.
451	*/	410	*/
452	static void	411	static void
453	coro_init_stacks ()	412	coro_init_stacks ()
454	{	413	{
455	PL_curstackinfo = new_stackinfo(96, 1024/sizeof(PERL_CONTEXT) - 1);	414	PL_curstackinfo = new_stackinfo(128, 1024/sizeof(PERL_CONTEXT));
456	PL_curstackinfo->si_type = PERLSI_MAIN;	415	PL_curstackinfo->si_type = PERLSI_MAIN;
457	PL_curstack = PL_curstackinfo->si_stack;	416	PL_curstack = PL_curstackinfo->si_stack;
458	PL_mainstack = PL_curstack; /* remember in case we switch stacks */	417	PL_mainstack = PL_curstack; /* remember in case we switch stacks */
459		418
460	PL_stack_base = AvARRAY(PL_curstack);	419	PL_stack_base = AvARRAY(PL_curstack);
461	PL_stack_sp = PL_stack_base;	420	PL_stack_sp = PL_stack_base;
462	PL_stack_max = PL_stack_base + AvMAX(PL_curstack);	421	PL_stack_max = PL_stack_base + AvMAX(PL_curstack);
463		422
464	New(50,PL_tmps_stack,96,SV*);	423	New(50,PL_tmps_stack,128,SV*);
465	PL_tmps_floor = -1;	424	PL_tmps_floor = -1;
466	PL_tmps_ix = -1;	425	PL_tmps_ix = -1;
467	PL_tmps_max = 96;	426	PL_tmps_max = 128;
468		427
469	New(54,PL_markstack,16,I32);	428	New(54,PL_markstack,32,I32);
470	PL_markstack_ptr = PL_markstack;	429	PL_markstack_ptr = PL_markstack;
471	PL_markstack_max = PL_markstack + 16;	430	PL_markstack_max = PL_markstack + 32;
472		431
473	#ifdef SET_MARK_OFFSET	432	#ifdef SET_MARK_OFFSET
474	SET_MARK_OFFSET;	433	SET_MARK_OFFSET;
475	#endif	434	#endif
476		435
477	New(54,PL_scopestack,16,I32);	436	New(54,PL_scopestack,32,I32);
478	PL_scopestack_ix = 0;	437	PL_scopestack_ix = 0;
479	PL_scopestack_max = 16;	438	PL_scopestack_max = 32;
480		439
481	New(54,PL_savestack,96,ANY);	440	New(54,PL_savestack,64,ANY);
482	PL_savestack_ix = 0;	441	PL_savestack_ix = 0;
483	PL_savestack_max = 96;	442	PL_savestack_max = 64;
484		443
485	#if !PERL_VERSION_ATLEAST (5,9,0)	444	#if !PERL_VERSION_ATLEAST (5,9,0)
486	New(54,PL_retstack,8,OP*);	445	New(54,PL_retstack,16,OP*);
487	PL_retstack_ix = 0;	446	PL_retstack_ix = 0;
488	PL_retstack_max = 8;	447	PL_retstack_max = 16;
489	#endif	448	#endif
490	}	449	}
491		450
492	/*	451	/*
493	* destroy the stacks, the callchain etc...	452	* destroy the stacks, the callchain etc...
494	*/	453	*/
495	static void	454	static void
496	coro_destroy_stacks()	455	coro_destroy_stacks ()
497	{	456	{
498	if (!IN_DESTRUCT)	457	if (!IN_DESTRUCT)
499	{	458	{
500	/* is this ugly, I ask? */	459	/* is this ugly, I ask? */
501	LEAVE_SCOPE (0);	460	LEAVE_SCOPE (0);
…		…
546	* emulate part of the perl startup here.	505	* emulate part of the perl startup here.
547	*/	506	*/
548		507
549	coro_init_stacks ();	508	coro_init_stacks ();
550		509
551	PL_curcop = 0;	510	PL_curcop = &PL_compiling;
552	PL_in_eval = 0;	511	PL_in_eval = EVAL_NULL;
553	PL_curpm = 0;	512	PL_curpm = 0;
		513	PL_localizing = 0;
		514	PL_dirty = 0;
		515	PL_restartop = 0;
554		516
555	{	517	{
556	dSP;	518	dSP;
557	LOGOP myop;	519	LOGOP myop;
558		520
559	/* I have no idea why this is needed, but it is */
560	PUSHMARK (SP);
561
562	SvREFCNT_dec (GvAV (PL_defgv));	521	SvREFCNT_dec (GvAV (PL_defgv));
563	GvAV (PL_defgv) = coro->args; coro->args = 0;	522	GvAV (PL_defgv) = coro->args; coro->args = 0;
564		523
565	Zero (&myop, 1, LOGOP);	524	Zero (&myop, 1, LOGOP);
566	myop.op_next = Nullop;	525	myop.op_next = Nullop;
567	myop.op_flags = OPf_WANT_VOID;	526	myop.op_flags = OPf_WANT_VOID;
568		527
		528	PUSHMARK (SP);
		529	XPUSHs ((SV *)get_cv ("Coro::State::_coro_init", FALSE));
		530	PUTBACK;
569	PL_op = (OP *)&myop;	531	PL_op = (OP *)&myop;
570
571	PUSHMARK (SP);
572	XPUSHs ((SV *)get_cv ("Coro::State::coro_init", FALSE));
573	PUTBACK;
574	PL_op = PL_ppaddr[OP_ENTERSUB](aTHX);	532	PL_op = PL_ppaddr[OP_ENTERSUB](aTHX);
575	SPAGAIN;	533	SPAGAIN;
576
577	ENTER; /* necessary e.g. for dounwind */
578	}	534	}
		535
		536	ENTER; /* necessary e.g. for dounwind */
579	}	537	}
580		538
581	static void	539	static void
582	free_coro_mortal ()	540	free_coro_mortal ()
583	{	541	{
…		…
586	SvREFCNT_dec (coro_mortal);	544	SvREFCNT_dec (coro_mortal);
587	coro_mortal = 0;	545	coro_mortal = 0;
588	}	546	}
589	}	547	}
590		548
		549	/* inject a fake call to Coro::State::_cctx_init into the execution */
591	static void NOINLINE	550	static void NOINLINE
592	prepare_cctx (coro_stack *cctx)	551	prepare_cctx (coro_cctx *cctx)
593	{	552	{
594	dSP;	553	dSP;
595	LOGOP myop;	554	LOGOP myop;
596		555
597	Zero (&myop, 1, LOGOP);	556	Zero (&myop, 1, LOGOP);
598	myop.op_next = PL_op;	557	myop.op_next = PL_op;
599	myop.op_flags = OPf_WANT_VOID;	558	myop.op_flags = OPf_WANT_VOID \| OPf_STACKED;
600
601	sv_setiv (get_sv ("Coro::State::cctx_stack", FALSE), PTR2IV (cctx));
602		559
603	PUSHMARK (SP);	560	PUSHMARK (SP);
		561	EXTEND (SP, 2);
		562	PUSHs (sv_2mortal (newSViv (PTR2IV (cctx))));
604	XPUSHs ((SV *)get_cv ("Coro::State::cctx_init", FALSE));	563	PUSHs ((SV *)get_cv ("Coro::State::_cctx_init", FALSE));
605	PUTBACK;	564	PUTBACK;
		565	PL_op = (OP *)&myop;
606	PL_restartop = PL_ppaddr[OP_ENTERSUB](aTHX);	566	PL_op = PL_ppaddr[OP_ENTERSUB](aTHX);
607	SPAGAIN;	567	SPAGAIN;
608	}	568	}
609		569
610	static void	570	static void
611	coro_run (void *arg)	571	coro_run (void *arg)
612	{	572	{
613	/* coro_run is the alternative epilogue of transfer() */	573	/* coro_run is the alternative tail of transfer(), so unlock here. */
614	UNLOCK;	574	UNLOCK;
615		575
616	/*	576	/*
617	* this is a _very_ stripped down perl interpreter ;)	577	* this is a _very_ stripped down perl interpreter ;)
618	*/	578	*/
619	PL_top_env = &PL_start_env;	579	PL_top_env = &PL_start_env;
		580
620	/* inject call to cctx_init */	581	/* inject call to cctx_init */
621	prepare_cctx ((coro_stack *)arg);	582	prepare_cctx ((coro_cctx *)arg);
622		583
623	/* somebody will hit me for both perl_run and PL_restartop */	584	/* somebody will hit me for both perl_run and PL_restartop */
		585	PL_restartop = PL_op;
624	perl_run (PL_curinterp);	586	perl_run (PL_curinterp);
625		587
626	fputs ("FATAL: C coroutine fell over the edge of the world, aborting.\n", stderr);	588	fputs ("FATAL: C coroutine fell over the edge of the world, aborting. Did you call exit in a coroutine?\n", stderr);
627	abort ();	589	abort ();
628	}	590	}
629		591
630	static coro_stack *	592	static coro_cctx *
631	stack_new ()	593	cctx_new ()
632	{	594	{
633	coro_stack *stack;	595	coro_cctx *cctx;
634		596
		597	++cctx_count;
		598
635	New (0, stack, 1, coro_stack);	599	Newz (0, cctx, 1, coro_cctx);
636		600
637	#if HAVE_MMAP	601	#if HAVE_MMAP
638		602
639	stack->ssize = ((STACKSIZE * sizeof (long) + PAGESIZE - 1) / PAGESIZE + STACKGUARD) * PAGESIZE;	603	cctx->ssize = ((STACKSIZE * sizeof (long) + PAGESIZE - 1) / PAGESIZE + STACKGUARD) * PAGESIZE;
640	/* mmap suppsedly does allocate-on-write for us */	604	/* mmap supposedly does allocate-on-write for us */
641	stack->sptr = mmap (0, stack->ssize, PROT_EXEC\|PROT_READ\|PROT_WRITE, MAP_PRIVATE\|MAP_ANONYMOUS, 0, 0);	605	cctx->sptr = mmap (0, cctx->ssize, PROT_EXEC\|PROT_READ\|PROT_WRITE, MAP_PRIVATE\|MAP_ANONYMOUS, 0, 0);
642		606
643	if (stack->sptr == (void *)-1)	607	if (cctx->sptr == (void *)-1)
644	{	608	{
645	perror ("FATAL: unable to mmap stack for coroutine");	609	perror ("FATAL: unable to mmap stack for coroutine");
646	_exit (EXIT_FAILURE);	610	_exit (EXIT_FAILURE);
647	}	611	}
648		612
649	# if STACKGUARD	613	# if STACKGUARD
650	mprotect (stack->sptr, STACKGUARD * PAGESIZE, PROT_NONE);	614	mprotect (cctx->sptr, STACKGUARD * PAGESIZE, PROT_NONE);
651	# endif	615	# endif
652		616
653	#else	617	#else
654		618
655	stack->ssize = STACKSIZE * (long)sizeof (long);	619	cctx->ssize = STACKSIZE * (long)sizeof (long);
656	New (0, stack->sptr, STACKSIZE, long);	620	New (0, cctx->sptr, STACKSIZE, long);
657		621
658	if (!stack->sptr)	622	if (!cctx->sptr)
659	{	623	{
660	perror (stderr, "FATAL: unable to malloc stack for coroutine");	624	perror ("FATAL: unable to malloc stack for coroutine");
661	_exit (EXIT_FAILURE);	625	_exit (EXIT_FAILURE);
662	}	626	}
663		627
664	#endif	628	#endif
665		629
		630	#if USE_VALGRIND
		631	cctx->valgrind_id = VALGRIND_STACK_REGISTER (
		632	STACKGUARD * PAGESIZE + (char *)cctx->sptr,
		633	cctx->ssize + (char *)cctx->sptr
		634	);
		635	#endif
		636
666	coro_create (&stack->cctx, coro_run, (void *)stack, stack->sptr, stack->ssize);	637	coro_create (&cctx->cctx, coro_run, (void *)cctx, cctx->sptr, cctx->ssize);
667		638
668	return stack;	639	return cctx;
669	}	640	}
670		641
671	static void	642	static void
672	stack_free (coro_stack *stack)	643	cctx_destroy (coro_cctx *cctx)
673	{	644	{
674	if (!stack)	645	if (!cctx)
675	return;	646	return;
676		647
		648	--cctx_count;
		649
		650	#if USE_VALGRIND
		651	VALGRIND_STACK_DEREGISTER (cctx->valgrind_id);
		652	#endif
		653
677	#if HAVE_MMAP	654	#if HAVE_MMAP
678	munmap (stack->sptr, stack->ssize);	655	munmap (cctx->sptr, cctx->ssize);
679	#else	656	#else
680	Safefree (stack->sptr);	657	Safefree (cctx->sptr);
681	#endif	658	#endif
682		659
683	Safefree (stack);	660	Safefree (cctx);
684	}	661	}
685		662
686	static coro_stack *stack_first;
687	static int cctx_count, cctx_idle;
688
689	static coro_stack *	663	static coro_cctx *
690	stack_get ()	664	cctx_get ()
691	{	665	{
692	coro_stack *stack;	666	coro_cctx *cctx;
693		667
694	if (stack_first)	668	if (cctx_first)
695	{	669	{
		670	cctx = cctx_first;
		671	cctx_first = cctx->next;
696	--cctx_idle;	672	--cctx_idle;
697	stack = stack_first;
698	stack_first = stack->next;
699	}	673	}
700	else	674	else
701	{	675	{
702	++cctx_count;	676	cctx = cctx_new ();
703	stack = stack_new ();
704	PL_op = PL_op->op_next;	677	PL_op = PL_op->op_next;
705	}	678	}
706		679
707	return stack;	680	return cctx;
708	}	681	}
709		682
710	static void	683	static void
711	stack_put (coro_stack *stack)	684	cctx_put (coro_cctx *cctx)
712	{	685	{
		686	/* free another cctx if overlimit */
		687	if (cctx_idle >= MAX_IDLE_CCTX)
		688	{
		689	coro_cctx *first = cctx_first;
		690	cctx_first = first->next;
		691	--cctx_idle;
		692
		693	assert (!first->inuse);
		694	cctx_destroy (first);
		695	}
		696
713	++cctx_idle;	697	++cctx_idle;
714	stack->next = stack_first;	698	cctx->next = cctx_first;
715	stack_first = stack;	699	cctx_first = cctx;
716	}	700	}
717		701
718	/* never call directly, always through the coro_state_transfer global variable */	702	/* never call directly, always through the coro_state_transfer global variable */
719	static void NOINLINE	703	static void NOINLINE
720	transfer (struct coro prev, struct coro next, int flags)	704	transfer (struct coro prev, struct coro next)
721	{	705	{
722	dSTACKLEVEL;	706	dSTACKLEVEL;
723		707
724	/* sometimes transfer is only called to set idle_sp */	708	/* sometimes transfer is only called to set idle_sp */
725	if (flags == TRANSFER_SET_STACKLEVEL)	709	if (!next)
		710	{
726	((coro_stack *)prev)->idle_sp = STACKLEVEL;	711	((coro_cctx *)prev)->idle_sp = STACKLEVEL;
		712	assert (((coro_cctx )prev)->top_env = PL_top_env); / just for the side effetc when assert is enabled */
		713	}
727	else if (prev != next)	714	else if (prev != next)
728	{	715	{
729	coro_stack *prev__stack;	716	coro_cctx *prev__cctx;
		717
		718	if (prev->flags & CF_NEW)
		719	{
		720	/* create a new empty context */
		721	Newz (0, prev->cctx, 1, coro_cctx);
		722	prev->cctx->inuse = 1;
		723	prev->flags &= ~CF_NEW;
		724	prev->flags \|= CF_RUNNING;
		725	}
		726
		727	/TODO: must not croak here /
		728	if (!prev->flags & CF_RUNNING)
		729	croak ("Coro::State::transfer called with non-running prev Coro::State, but can only transfer from running states");
		730
		731	if (next->flags & CF_RUNNING)
		732	croak ("Coro::State::transfer called with running next Coro::State, but can only transfer to inactive states");
		733
		734	prev->flags &= ~CF_RUNNING;
		735	next->flags \|= CF_RUNNING;
730		736
731	LOCK;	737	LOCK;
732		738
733	if (next->mainstack)	739	if (next->flags & CF_NEW)
734	{	740	{
735	/* coroutine already started */	741	/* need to start coroutine */
736	SAVE (prev, flags);	742	next->flags &= ~CF_NEW;
737	LOAD (next);	743	/* first get rid of the old state */
		744	save_perl (prev);
		745	/* setup coroutine call */
		746	setup_coro (next);
		747	/* need a new stack */
		748	assert (!next->cctx);
738	}	749	}
739	else	750	else
740	{	751	{
741	/* need to start coroutine */	752	/* coroutine already started */
742	/* first get rid of the old state */	753	save_perl (prev);
743	SAVE (prev, -1);	754	load_perl (next);
744	/* setup coroutine call */
745	setup_coro (next);
746	/* need a stack */
747	next->stack = 0;
748	}	755	}
749		756
750	if (!prev->stack)
751	/* create a new empty context */
752	Newz (0, prev->stack, 1, coro_stack);
753
754	prev__stack = prev->stack;	757	prev__cctx = prev->cctx;
755		758
756	/* possibly "free" the stack */	759	/* possibly "free" the cctx */
757	if (prev__stack->idle_sp == STACKLEVEL)	760	if (prev__cctx->idle_sp == STACKLEVEL)
758	{	761	{
759	stack_put (prev__stack);	762	/* I assume that STACKLEVEL is a stronger indicator than PL_top_env changes */
		763	assert (PL_top_env == prev__cctx->top_env);
		764
760	prev->stack = 0;	765	prev->cctx = 0;
		766
		767	cctx_put (prev__cctx);
		768	prev__cctx->inuse = 0;
761	}	769	}
762		770
763	if (!next->stack)	771	if (!next->cctx)
764	next->stack = stack_get ();
765
766	if (prev__stack != next->stack)
767	{	772	{
		773	next->cctx = cctx_get ();
		774	assert (!next->cctx->inuse);
		775	next->cctx->inuse = 1;
		776	}
		777
		778	if (prev__cctx != next->cctx)
		779	{
768	prev__stack->top_env = PL_top_env;	780	prev__cctx->top_env = PL_top_env;
769	PL_top_env = next->stack->top_env;	781	PL_top_env = next->cctx->top_env;
770	coro_transfer (&prev__stack->cctx, &next->stack->cctx);	782	coro_transfer (&prev__cctx->cctx, &next->cctx->cctx);
771	}	783	}
772		784
773	free_coro_mortal ();	785	free_coro_mortal ();
774		786
775	UNLOCK;	787	UNLOCK;
…		…
777	}	789	}
778		790
779	struct transfer_args	791	struct transfer_args
780	{	792	{
781	struct coro prev, next;	793	struct coro prev, next;
782	int flags;
783	};	794	};
784		795
785	#define TRANSFER(ta) transfer ((ta).prev, (ta).next, (ta).flags)	796	#define TRANSFER(ta) transfer ((ta).prev, (ta).next)
786		797
787	static void	798	static void
788	coro_state_destroy (struct coro *coro)	799	coro_state_destroy (struct coro *coro)
789	{	800	{
790	if (coro->refcnt--)	801	if (coro->refcnt--)
791	return;	802	return;
792		803
793	if (coro->mainstack && coro->mainstack != main_mainstack)	804	if (coro->mainstack && coro->mainstack != main_mainstack)
794	{	805	{
795	struct coro temp;	806	struct coro temp;
		807	Zero (&temp, 1, struct coro);
		808	temp.save = CORO_SAVE_ALL;
796		809
797	SAVE ((&temp), TRANSFER_SAVE_ALL);	810	if (coro->flags & CF_RUNNING)
798	LOAD (coro);	811	croak ("FATAL: tried to destroy currently running coroutine");
		812
		813	save_perl (&temp);
		814	load_perl (coro);
799		815
800	coro_destroy_stacks ();	816	coro_destroy_stacks ();
801		817
802	LOAD ((&temp)); /* this will get rid of defsv etc.. */	818	load_perl (&temp); /* this will get rid of defsv etc.. */
803		819
804	coro->mainstack = 0;	820	coro->mainstack = 0;
805	}	821	}
806		822
807	stack_free (coro->stack);	823	cctx_destroy (coro->cctx);
808	SvREFCNT_dec (coro->args);	824	SvREFCNT_dec (coro->args);
809	Safefree (coro);	825	Safefree (coro);
810	}	826	}
811		827
812	static int	828	static int
…		…
862	assert (mg->mg_type == PERL_MAGIC_ext);	878	assert (mg->mg_type == PERL_MAGIC_ext);
863	return (struct coro *)mg->mg_ptr;	879	return (struct coro *)mg->mg_ptr;
864	}	880	}
865		881
866	static void	882	static void
867	prepare_transfer (struct transfer_args ta, SV prev, SV *next, int flags)	883	prepare_transfer (struct transfer_args ta, SV prev_sv, SV *next_sv)
868	{	884	{
869	ta->prev = SvSTATE (prev);	885	ta->prev = SvSTATE (prev_sv);
870	ta->next = SvSTATE (next);	886	ta->next = SvSTATE (next_sv);
871	ta->flags = flags;
872	}	887	}
873		888
874	static void	889	static void
875	api_transfer (SV prev, SV next, int flags)	890	api_transfer (SV prev_sv, SV next_sv)
876	{	891	{
877	dTHX;
878	struct transfer_args ta;	892	struct transfer_args ta;
879		893
880	prepare_transfer (&ta, prev, next, flags);	894	prepare_transfer (&ta, prev_sv, next_sv);
881	TRANSFER (ta);	895	TRANSFER (ta);
		896	}
		897
		898	static int
		899	api_save (SV *coro_sv, int new_save)
		900	{
		901	struct coro *coro = SvSTATE (coro_sv);
		902	int old_save = coro->save;
		903
		904	if (new_save >= 0)
		905	coro->save = new_save;
		906
		907	return old_save;
882	}	908	}
883		909
884	/ Coro ******************************************************************/	910	/ Coro ******************************************************************/
885		911
886	#define PRIO_MAX 3	912	#define PRIO_MAX 3
…		…
889	#define PRIO_LOW -1	915	#define PRIO_LOW -1
890	#define PRIO_IDLE -3	916	#define PRIO_IDLE -3
891	#define PRIO_MIN -4	917	#define PRIO_MIN -4
892		918
893	/* for Coro.pm */	919	/* for Coro.pm */
894	static GV coro_current, coro_idle;	920	static SV *coro_current;
895	static AV *coro_ready [PRIO_MAX-PRIO_MIN+1];	921	static AV *coro_ready [PRIO_MAX-PRIO_MIN+1];
896	static int coro_nready;	922	static int coro_nready;
897		923
898	static void	924	static void
899	coro_enq (SV *sv)	925	coro_enq (SV *coro_sv)
900	{	926	{
901	int prio;
902
903	if (SvTYPE (sv) != SVt_PVHV)
904	croak ("Coro::ready tried to enqueue something that is not a coroutine");
905
906	prio = SvSTATE (sv)->prio;
907
908	av_push (coro_ready [prio - PRIO_MIN], sv);	927	av_push (coro_ready [SvSTATE (coro_sv)->prio - PRIO_MIN], coro_sv);
909	coro_nready++;	928	coro_nready++;
910	}	929	}
911		930
912	static SV *	931	static SV *
913	coro_deq (int min_prio)	932	coro_deq (int min_prio)
…		…
926	}	945	}
927		946
928	return 0;	947	return 0;
929	}	948	}
930		949
931	static void	950	static int
932	api_ready (SV *coro)	951	api_ready (SV *coro_sv)
933	{	952	{
934	dTHX;	953	struct coro *coro;
935		954
936	if (SvROK (coro))	955	if (SvROK (coro_sv))
937	coro = SvRV (coro);	956	coro_sv = SvRV (coro_sv);
		957
		958	coro = SvSTATE (coro_sv);
		959
		960	if (coro->flags & CF_READY)
		961	return 0;
		962
		963	#if 0 /* this is actually harmless */
		964	if (coro->flags & CF_RUNNING)
		965	croak ("Coro::ready called on currently running coroutine");
		966	#endif
		967
		968	coro->flags \|= CF_READY;
938		969
939	LOCK;	970	LOCK;
940	coro_enq (SvREFCNT_inc (coro));	971	coro_enq (SvREFCNT_inc (coro_sv));
941	UNLOCK;	972	UNLOCK;
		973
		974	return 1;
		975	}
		976
		977	static int
		978	api_is_ready (SV *coro_sv)
		979	{
		980	return !!SvSTATE (coro_sv)->flags & CF_READY;
942	}	981	}
943		982
944	static void	983	static void
945	prepare_schedule (struct transfer_args *ta)	984	prepare_schedule (struct transfer_args *ta)
946	{	985	{
947	SV current, prev, *next;	986	SV prev, next;
948
949	current = GvSV (coro_current);
950		987
951	for (;;)	988	for (;;)
952	{	989	{
953	LOCK;	990	LOCK;
954	next = coro_deq (PRIO_MIN);	991	next = coro_deq (PRIO_MIN);
…		…
963	ENTER;	1000	ENTER;
964	SAVETMPS;	1001	SAVETMPS;
965		1002
966	PUSHMARK (SP);	1003	PUSHMARK (SP);
967	PUTBACK;	1004	PUTBACK;
968	call_sv (GvSV (coro_idle), G_DISCARD);	1005	call_sv (get_sv ("Coro::idle", FALSE), G_DISCARD);
969		1006
970	FREETMPS;	1007	FREETMPS;
971	LEAVE;	1008	LEAVE;
972	}	1009	}
973	}	1010	}
974		1011
975	prev = SvRV (current);	1012	prev = SvRV (coro_current);
976	SvRV (current) = next;	1013	SvRV_set (coro_current, next);
977		1014
978	/* free this only after the transfer */	1015	/* free this only after the transfer */
979	LOCK;	1016	LOCK;
980	free_coro_mortal ();	1017	free_coro_mortal ();
981	UNLOCK;	1018	UNLOCK;
982	coro_mortal = prev;	1019	coro_mortal = prev;
983		1020
		1021	assert (!SvROK(prev));//D
		1022	assert (!SvROK(next));//D
		1023
984	ta->prev = SvSTATE (prev);	1024	ta->prev = SvSTATE (prev);
985	ta->next = SvSTATE (next);	1025	ta->next = SvSTATE (next);
986	ta->flags = TRANSFER_SAVE_ALL;	1026
		1027	assert (ta->next->flags & CF_READY);
		1028	ta->next->flags &= ~CF_READY;
987	}	1029	}
988		1030
989	static void	1031	static void
990	prepare_cede (struct transfer_args *ta)	1032	prepare_cede (struct transfer_args *ta)
991	{	1033	{
992	LOCK;	1034	api_ready (coro_current);
993	coro_enq (SvREFCNT_inc (SvRV (GvSV (coro_current))));
994	UNLOCK;
995		1035
996	prepare_schedule (ta);	1036	prepare_schedule (ta);
997	}	1037	}
998		1038
999	static void	1039	static void
1000	api_schedule (void)	1040	api_schedule (void)
1001	{	1041	{
1002	dTHX;
1003	struct transfer_args ta;	1042	struct transfer_args ta;
1004		1043
1005	prepare_schedule (&ta);	1044	prepare_schedule (&ta);
1006	TRANSFER (ta);	1045	TRANSFER (ta);
1007	}	1046	}
1008		1047
1009	static void	1048	static void
1010	api_cede (void)	1049	api_cede (void)
1011	{	1050	{
1012	dTHX;
1013	struct transfer_args ta;	1051	struct transfer_args ta;
1014		1052
1015	prepare_cede (&ta);	1053	prepare_cede (&ta);
1016	TRANSFER (ta);	1054	TRANSFER (ta);
1017	}	1055	}
…		…
1027	#endif	1065	#endif
1028	BOOT_PAGESIZE;	1066	BOOT_PAGESIZE;
1029		1067
1030	coro_state_stash = gv_stashpv ("Coro::State", TRUE);	1068	coro_state_stash = gv_stashpv ("Coro::State", TRUE);
1031		1069
1032	newCONSTSUB (coro_state_stash, "SAVE_DEFAV", newSViv (TRANSFER_SAVE_DEFAV));	1070	newCONSTSUB (coro_state_stash, "SAVE_DEFAV", newSViv (CORO_SAVE_DEFAV));
1033	newCONSTSUB (coro_state_stash, "SAVE_DEFSV", newSViv (TRANSFER_SAVE_DEFSV));	1071	newCONSTSUB (coro_state_stash, "SAVE_DEFSV", newSViv (CORO_SAVE_DEFSV));
1034	newCONSTSUB (coro_state_stash, "SAVE_ERRSV", newSViv (TRANSFER_SAVE_ERRSV));	1072	newCONSTSUB (coro_state_stash, "SAVE_ERRSV", newSViv (CORO_SAVE_ERRSV));
		1073	newCONSTSUB (coro_state_stash, "SAVE_IRSSV", newSViv (CORO_SAVE_IRSSV));
		1074	newCONSTSUB (coro_state_stash, "SAVE_ALL", newSViv (CORO_SAVE_ALL));
1035		1075
1036	main_mainstack = PL_mainstack;	1076	main_mainstack = PL_mainstack;
1037		1077
1038	coroapi.ver = CORO_API_VERSION;	1078	coroapi.ver = CORO_API_VERSION;
1039	coroapi.transfer = api_transfer;	1079	coroapi.transfer = api_transfer;
…		…
1049	HV *hv;	1089	HV *hv;
1050	int i;	1090	int i;
1051		1091
1052	Newz (0, coro, 1, struct coro);	1092	Newz (0, coro, 1, struct coro);
1053	coro->args = newAV ();	1093	coro->args = newAV ();
		1094	coro->save = CORO_SAVE_ALL;
		1095	coro->flags = CF_NEW;
1054		1096
1055	hv = newHV ();	1097	hv = newHV ();
1056	sv_magicext ((SV )hv, 0, PERL_MAGIC_ext, &coro_state_vtbl, (char )coro, 0)->mg_flags \|= MGf_DUP;	1098	sv_magicext ((SV )hv, 0, PERL_MAGIC_ext, &coro_state_vtbl, (char )coro, 0)->mg_flags \|= MGf_DUP;
1057	RETVAL = sv_bless (newRV_noinc ((SV *)hv), gv_stashpv (klass, 1));	1099	RETVAL = sv_bless (newRV_noinc ((SV *)hv), gv_stashpv (klass, 1));
1058		1100
1059	for (i = 1; i < items; i++)	1101	for (i = 1; i < items; i++)
1060	av_push (coro->args, newSVsv (ST (i)));	1102	av_push (coro->args, newSVsv (ST (i)));
1061
1062	/coro->mainstack = 0; //actual work is done inside transfer /
1063	/coro->stack = 0;/
1064	}	1103	}
1065	OUTPUT:	1104	OUTPUT:
		1105	RETVAL
		1106
		1107	int
		1108	save (SV *coro, int new_save = -1)
		1109	CODE:
		1110	RETVAL = api_save (coro, new_save);
		1111	OUTPUT:
1066	RETVAL	1112	RETVAL
1067		1113
1068	void	1114	void
1069	_set_stacklevel (...)	1115	_set_stacklevel (...)
1070	ALIAS:	1116	ALIAS:
1071	Coro::State::transfer = 1	1117	Coro::State::transfer = 1
1072	Coro::schedule = 2	1118	Coro::schedule = 2
1073	Coro::cede = 3	1119	Coro::cede = 3
1074	Coro::Cont::yield = 4
1075	CODE:	1120	CODE:
1076	{	1121	{
1077	struct transfer_args ta;	1122	struct transfer_args ta;
1078		1123
1079	switch (ix)	1124	switch (ix)
1080	{	1125	{
1081	case 0:	1126	case 0:
1082	ta.prev = (struct coro )INT2PTR (coro_stack , SvIV (ST (0)));	1127	ta.prev = (struct coro )INT2PTR (coro_cctx , SvIV (ST (0)));
1083	ta.next = 0;	1128	ta.next = 0;
1084	ta.flags = TRANSFER_SET_STACKLEVEL;
1085	break;	1129	break;
1086		1130
1087	case 1:	1131	case 1:
1088	if (items != 3)	1132	if (items != 2)
1089	croak ("Coro::State::transfer(prev,next,flags) expects three arguments, not %d", items);	1133	croak ("Coro::State::transfer (prev,next) expects two arguments, not %d", items);
1090		1134
1091	prepare_transfer (&ta, ST (0), ST (1), SvIV (ST (2)));	1135	prepare_transfer (&ta, ST (0), ST (1));
1092	break;	1136	break;
1093		1137
1094	case 2:	1138	case 2:
1095	prepare_schedule (&ta);	1139	prepare_schedule (&ta);
1096	break;	1140	break;
1097		1141
1098	case 3:	1142	case 3:
1099	prepare_cede (&ta);	1143	prepare_cede (&ta);
1100	break;	1144	break;
1101
1102	case 4:
1103	{
1104	SV *yieldstack;
1105	SV *sv;
1106	AV *defav = GvAV (PL_defgv);
1107
1108	yieldstack = *hv_fetch (
1109	(HV *)SvRV (GvSV (coro_current)),
1110	"yieldstack", sizeof ("yieldstack") - 1,
1111	0
1112	);
1113
1114	/* set up @_ -- ugly */
1115	av_clear (defav);
1116	av_fill (defav, items - 1);
1117	while (items--)
1118	av_store (defav, items, SvREFCNT_inc (ST(items)));
1119
1120	sv = av_pop ((AV *)SvRV (yieldstack));
1121	ta.prev = SvSTATE (av_fetch ((AV )SvRV (sv), 0, 0));
1122	ta.next = SvSTATE (av_fetch ((AV )SvRV (sv), 1, 0));
1123	ta.flags = 0;
1124	SvREFCNT_dec (sv);
1125	}
1126	break;
1127
1128	}	1145	}
1129		1146
1130	TRANSFER (ta);	1147	TRANSFER (ta);
1131	}	1148	}
1132		1149
…		…
1147	int code	1164	int code
1148	PROTOTYPE: $	1165	PROTOTYPE: $
1149	CODE:	1166	CODE:
1150	_exit (code);	1167	_exit (code);
1151		1168
		1169	int
		1170	cctx_count ()
		1171	CODE:
		1172	RETVAL = cctx_count;
		1173	OUTPUT:
		1174	RETVAL
		1175
		1176	int
		1177	cctx_idle ()
		1178	CODE:
		1179	RETVAL = cctx_idle;
		1180	OUTPUT:
		1181	RETVAL
		1182
1152	MODULE = Coro::State PACKAGE = Coro	1183	MODULE = Coro::State PACKAGE = Coro
1153		1184
1154	BOOT:	1185	BOOT:
1155	{	1186	{
1156	int i;	1187	int i;
…		…
1162	newCONSTSUB (coro_stash, "PRIO_NORMAL", newSViv (PRIO_NORMAL));	1193	newCONSTSUB (coro_stash, "PRIO_NORMAL", newSViv (PRIO_NORMAL));
1163	newCONSTSUB (coro_stash, "PRIO_LOW", newSViv (PRIO_LOW));	1194	newCONSTSUB (coro_stash, "PRIO_LOW", newSViv (PRIO_LOW));
1164	newCONSTSUB (coro_stash, "PRIO_IDLE", newSViv (PRIO_IDLE));	1195	newCONSTSUB (coro_stash, "PRIO_IDLE", newSViv (PRIO_IDLE));
1165	newCONSTSUB (coro_stash, "PRIO_MIN", newSViv (PRIO_MIN));	1196	newCONSTSUB (coro_stash, "PRIO_MIN", newSViv (PRIO_MIN));
1166		1197
1167	coro_current = gv_fetchpv ("Coro::current", TRUE, SVt_PV);	1198	coro_current = get_sv ("Coro::current", FALSE);
1168	coro_idle = gv_fetchpv ("Coro::idle" , TRUE, SVt_PV);	1199	SvREADONLY_on (coro_current);
1169		1200
1170	for (i = PRIO_MAX - PRIO_MIN + 1; i--; )	1201	for (i = PRIO_MAX - PRIO_MIN + 1; i--; )
1171	coro_ready[i] = newAV ();	1202	coro_ready[i] = newAV ();
1172		1203
1173	{	1204	{
1174	SV *sv = perl_get_sv("Coro::API", 1);	1205	SV *sv = perl_get_sv("Coro::API", 1);
1175		1206
1176	coroapi.schedule = api_schedule;	1207	coroapi.schedule = api_schedule;
		1208	coroapi.save = api_save;
1177	coroapi.cede = api_cede;	1209	coroapi.cede = api_cede;
1178	coroapi.ready = api_ready;	1210	coroapi.ready = api_ready;
		1211	coroapi.is_ready = api_is_ready;
1179	coroapi.nready = &coro_nready;	1212	coroapi.nready = &coro_nready;
1180	coroapi.current = coro_current;	1213	coroapi.current = coro_current;
1181		1214
1182	GCoroAPI = &coroapi;	1215	GCoroAPI = &coroapi;
1183	sv_setiv (sv, (IV)&coroapi);	1216	sv_setiv (sv, (IV)&coroapi);
1184	SvREADONLY_on (sv);	1217	SvREADONLY_on (sv);
1185	}	1218	}
1186	}	1219	}
		1220
		1221	void
		1222	_set_current (SV *current)
		1223	PROTOTYPE: $
		1224	CODE:
		1225	SvREFCNT_dec (SvRV (coro_current));
		1226	SvRV_set (coro_current, SvREFCNT_inc (SvRV (current)));
1187		1227
1188	int	1228	int
1189	prio (Coro::State coro, int newprio = 0)	1229	prio (Coro::State coro, int newprio = 0)
1190	ALIAS:	1230	ALIAS:
1191	nice = 1	1231	nice = 1
…		…
1203		1243
1204	coro->prio = newprio;	1244	coro->prio = newprio;
1205	}	1245	}
1206	}	1246	}
1207		1247
1208	void	1248	SV *
1209	ready (SV *self)	1249	ready (SV *self)
1210	PROTOTYPE: $	1250	PROTOTYPE: $
1211	CODE:	1251	CODE:
1212	api_ready (self);	1252	RETVAL = boolSV (api_ready (self));
		1253	OUTPUT:
		1254	RETVAL
		1255
		1256	SV *
		1257	is_ready (SV *self)
		1258	PROTOTYPE: $
		1259	CODE:
		1260	RETVAL = boolSV (api_is_ready (self));
		1261	OUTPUT:
		1262	RETVAL
1213		1263
1214	int	1264	int
1215	nready (...)	1265	nready (...)
1216	PROTOTYPE:	1266	PROTOTYPE:
1217	CODE:	1267	CODE:
…		…
1223		1273
1224	SV *	1274	SV *
1225	_get_state ()	1275	_get_state ()
1226	CODE:	1276	CODE:
1227	{	1277	{
1228	struct {	1278	struct io_state *data;
1229	int errorno;
1230	int laststype;
1231	int laststatval;
1232	Stat_t statcache;
1233	} data;
1234		1279
		1280	RETVAL = newSV (sizeof (struct io_state));
		1281	data = (struct io_state *)SvPVX (RETVAL);
		1282	SvCUR_set (RETVAL, sizeof (struct io_state));
		1283	SvPOK_only (RETVAL);
		1284
1235	data.errorno = errno;	1285	data->errorno = errno;
1236	data.laststype = PL_laststype;	1286	data->laststype = PL_laststype;
1237	data.laststatval = PL_laststatval;	1287	data->laststatval = PL_laststatval;
1238	data.statcache = PL_statcache;	1288	data->statcache = PL_statcache;
1239
1240	RETVAL = newSVpvn ((char *)&data, sizeof data);
1241	}	1289	}
1242	OUTPUT:	1290	OUTPUT:
1243	RETVAL	1291	RETVAL
1244		1292
1245	void	1293	void
1246	_set_state (char *data_)	1294	_set_state (char *data_)
1247	PROTOTYPE: $	1295	PROTOTYPE: $
1248	CODE:	1296	CODE:
1249	{	1297	{
1250	struct {	1298	struct io_state data = (void )data_;
1251	int errorno;
1252	int laststype;
1253	int laststatval;
1254	Stat_t statcache;
1255	} data = (void )data_;
1256		1299
1257	errno = data->errorno;	1300	errno = data->errorno;
1258	PL_laststype = data->laststype;	1301	PL_laststype = data->laststype;
1259	PL_laststatval = data->laststatval;	1302	PL_laststatval = data->laststatval;
1260	PL_statcache = data->statcache;	1303	PL_statcache = data->statcache;
1261	}	1304	}
		1305

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Comparing Coro/Coro/State.xs (file contents): Revision 1.103 by root, Mon Nov 27 01:33:30 2006 UTC vs. Revision 1.124 by root, Tue Dec 5 12:50:04 2006 UTC

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Comparing Coro/Coro/State.xs (file contents):
Revision 1.103 by root, Mon Nov 27 01:33:30 2006 UTC vs.
Revision 1.124 by root, Tue Dec 5 12:50:04 2006 UTC