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

Comparing Coro/Coro/State.xs (file contents):
Revision 1.98 by root, Sun Nov 26 21:25:53 2006 UTC vs.
Revision 1.113 by root, Thu Nov 30 20:54:24 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	#if PERL_VERSION < 6	9	#if USE_VALGRIND
		10	# include <valgrind/valgrind.h>
		11	#endif
		12
		13	#define PERL_VERSION_ATLEAST(a,b,c) \
		14	(PERL_REVISION > (a) \
		15	\|\| (PERL_REVISION == (a) \
		16	&& (PERL_VERSION > (b) \
		17	\|\| (PERL_VERSION == (b) && PERLSUBVERSION >= (c)))))
		18
		19	#if !PERL_VERSION_ATLEAST (5,6,0)
10	# ifndef PL_ppaddr	20	# ifndef PL_ppaddr
11	# define PL_ppaddr ppaddr	21	# define PL_ppaddr ppaddr
12	# endif	22	# endif
13	# ifndef call_sv	23	# ifndef call_sv
14	# define call_sv perl_call_sv	24	# define call_sv perl_call_sv
…		…
52	# ifndef PAGESIZE	62	# ifndef PAGESIZE
53	# define PAGESIZE pagesize	63	# define PAGESIZE pagesize
54	# define BOOT_PAGESIZE pagesize = sysconf (_SC_PAGESIZE)	64	# define BOOT_PAGESIZE pagesize = sysconf (_SC_PAGESIZE)
55	static long pagesize;	65	static long pagesize;
56	# else	66	# else
57	# define BOOT_PAGESIZE	67	# define BOOT_PAGESIZE (void)0
58	# endif	68	# endif
		69	#else
		70	# define PAGESIZE 0
		71	# define BOOT_PAGESIZE (void)0
59	#endif	72	#endif
60		73
61	/* The next macro should declare a variable stacklevel that contains and approximation	74	/* The next macro should declare a variable stacklevel that contains and approximation
62	* to the current C stack pointer. Its property is that it changes with each call	75	* to the current C stack pointer. Its property is that it changes with each call
63	* and should be unique. */	76	* and should be unique. */
64	#define dSTACKLEVEL int stacklevel	77	#define dSTACKLEVEL int stacklevel
65	#define STACKLEVEL ((void *)&stacklevel)	78	#define STACKLEVEL ((void *)&stacklevel)
66		79
67	#define IN_DESTRUCT (PL_main_cv == Nullcv)	80	#define IN_DESTRUCT (PL_main_cv == Nullcv)
		81
		82	#if __GNUC__ >= 3
		83	# define attribute(x) __attribute__(x)
		84	#else
		85	# define attribute(x)
		86	#endif
		87
		88	#define NOINLINE attribute ((noinline))
68		89
69	#include "CoroAPI.h"	90	#include "CoroAPI.h"
70		91
71	#define TRANSFER_SET_STACKLEVEL 0x8bfbfbfb /* magic cookie */	92	#define TRANSFER_SET_STACKLEVEL 0x8bfbfbfb /* magic cookie */
72		93
…		…
82	static struct CoroAPI coroapi;	103	static struct CoroAPI coroapi;
83	static AV main_mainstack; / used to differentiate between $main and others */	104	static AV main_mainstack; / used to differentiate between $main and others */
84	static HV coro_state_stash, coro_stash;	105	static HV coro_state_stash, coro_stash;
85	static SV coro_mortal; / will be freed after next transfer */	106	static SV coro_mortal; / will be freed after next transfer */
86		107
		108	static struct coro_cctx *cctx_first;
		109	static int cctx_count, cctx_idle;
		110
87	/* this is a structure representing a c-level coroutine */	111	/* this is a structure representing a c-level coroutine */
88	typedef struct coro_stack {	112	typedef struct coro_cctx {
89	struct coro_stack *next;	113	struct coro_cctx *next;
90		114
91	/* the stack */	115	/* the stack */
92	void *sptr;	116	void *sptr;
93	long ssize; /* positive == mmap, otherwise malloc */	117	long ssize; /* positive == mmap, otherwise malloc */
94		118
95	/* cpu state */	119	/* cpu state */
96	void idle_sp; / sp of top-level transfer/schedule/cede call */	120	void idle_sp; / sp of top-level transfer/schedule/cede call */
97	JMPENV *top_env;	121	JMPENV *top_env;
98	coro_context cctx;	122	coro_context cctx;
99	} coro_stack;	123
		124	int inuse;
		125
		126	#if USE_VALGRIND
		127	int valgrind_id;
		128	#endif
		129	} coro_cctx;
		130
		131	enum {
		132	CF_RUNNING, /* coroutine is running */
		133	CF_READY, /* coroutine is ready */
		134	};
100		135
101	/* this is a structure representing a perl-level coroutine */	136	/* this is a structure representing a perl-level coroutine */
102	struct coro {	137	struct coro {
103	/* the c coroutine allocated to this perl coroutine, if any */	138	/* the c coroutine allocated to this perl coroutine, if any */
104	coro_stack *stack;	139	coro_cctx *cctx;
105		140
106	/* data associated with this coroutine (initial args) */	141	/* data associated with this coroutine (initial args) */
107	AV *args;	142	AV *args;
108	int refcnt;	143	int refcnt;
		144	int flags;
109		145
110	/* optionally saved, might be zero */	146	/* optionally saved, might be zero */
111	AV *defav;	147	AV *defav;
112	SV *defsv;	148	SV *defsv;
113	SV *errsv;	149	SV *errsv;
114		150
115	/* saved global state not related to stacks */	151	#define VAR(name,type) type name;
116	U8 dowarn;	152	# include "state.h"
117	I32 in_eval;	153	#undef VAR
118
119	/* the stacks and related info (callchain etc..) */
120	PERL_SI *curstackinfo;
121	AV *curstack;
122	AV *mainstack;
123	SV **stack_sp;
124	OP *op;
125	SV **curpad;
126	AV *comppad;
127	CV *compcv;
128	SV **stack_base;
129	SV **stack_max;
130	SV **tmps_stack;
131	I32 tmps_floor;
132	I32 tmps_ix;
133	I32 tmps_max;
134	I32 *markstack;
135	I32 *markstack_ptr;
136	I32 *markstack_max;
137	I32 *scopestack;
138	I32 scopestack_ix;
139	I32 scopestack_max;
140	ANY *savestack;
141	I32 savestack_ix;
142	I32 savestack_max;
143	OP **retstack;
144	I32 retstack_ix;
145	I32 retstack_max;
146	PMOP *curpm;
147	COP *curcop;
148		154
149	/* coro process data */	155	/* coro process data */
150	int prio;	156	int prio;
151	};	157	};
152		158
…		…
159	AV *padlist = CvPADLIST (cv);	165	AV *padlist = CvPADLIST (cv);
160	AV newpadlist, newpad;	166	AV newpadlist, newpad;
161		167
162	newpadlist = newAV ();	168	newpadlist = newAV ();
163	AvREAL_off (newpadlist);	169	AvREAL_off (newpadlist);
164	#if PERL_VERSION < 9	170	#if PERL_VERSION_ATLEAST (5,9,0)
		171	Perl_pad_push (aTHX_ padlist, AvFILLp (padlist) + 1);
		172	#else
165	Perl_pad_push (aTHX_ padlist, AvFILLp (padlist) + 1, 1);	173	Perl_pad_push (aTHX_ padlist, AvFILLp (padlist) + 1, 1);
166	#else
167	Perl_pad_push (aTHX_ padlist, AvFILLp (padlist) + 1);
168	#endif	174	#endif
169	newpad = (AV *)AvARRAY (padlist)[AvFILLp (padlist)];	175	newpad = (AV *)AvARRAY (padlist)[AvFILLp (padlist)];
170	--AvFILLp (padlist);	176	--AvFILLp (padlist);
171		177
172	av_store (newpadlist, 0, SvREFCNT_inc (*av_fetch (padlist, 0, FALSE)));	178	av_store (newpadlist, 0, SvREFCNT_inc (*av_fetch (padlist, 0, FALSE)));
…		…
216		222
217	#define PERL_MAGIC_coro PERL_MAGIC_ext	223	#define PERL_MAGIC_coro PERL_MAGIC_ext
218		224
219	static MGVTBL vtbl_coro = {0, 0, 0, 0, coro_cv_free};	225	static MGVTBL vtbl_coro = {0, 0, 0, 0, coro_cv_free};
220		226
		227	#define CORO_MAGIC(cv) \
		228	SvMAGIC (cv) \
		229	? SvMAGIC (cv)->mg_type == PERL_MAGIC_coro \
		230	? SvMAGIC (cv) \
		231	: mg_find ((SV *)cv, PERL_MAGIC_coro) \
		232	: 0
		233
221	/* the next two functions merely cache the padlists */	234	/* the next two functions merely cache the padlists */
222	static void	235	static void
223	get_padlist (CV *cv)	236	get_padlist (CV *cv)
224	{	237	{
225	MAGIC mg = mg_find ((SV )cv, PERL_MAGIC_coro);	238	MAGIC *mg = CORO_MAGIC (cv);
		239	AV *av;
226		240
227	if (mg && AvFILLp ((AV *)mg->mg_obj) >= 0)	241	if (mg && AvFILLp ((av = (AV *)mg->mg_obj)) >= 0)
228	CvPADLIST (cv) = (AV )av_pop ((AV )mg->mg_obj);	242	CvPADLIST (cv) = (AV *)AvARRAY (av)[AvFILLp (av)--];
229	else	243	else
230	{	244	{
231	#if 0	245	#if 0
232	/* this is probably cleaner, but also slower? */	246	/* this is probably cleaner, but also slower? */
233	CV *cp = Perl_cv_clone (cv);	247	CV *cp = Perl_cv_clone (cv);
…		…
241	}	255	}
242		256
243	static void	257	static void
244	put_padlist (CV *cv)	258	put_padlist (CV *cv)
245	{	259	{
246	MAGIC mg = mg_find ((SV )cv, PERL_MAGIC_coro);	260	MAGIC *mg = CORO_MAGIC (cv);
		261	AV *av;
247		262
248	if (!mg)	263	if (!mg)
249	{	264	{
250	sv_magic ((SV *)cv, 0, PERL_MAGIC_coro, 0, 0);	265	sv_magic ((SV *)cv, 0, PERL_MAGIC_coro, 0, 0);
251	mg = mg_find ((SV *)cv, PERL_MAGIC_coro);	266	mg = mg_find ((SV *)cv, PERL_MAGIC_coro);
252	mg->mg_virtual = &vtbl_coro;	267	mg->mg_virtual = &vtbl_coro;
253	mg->mg_obj = (SV *)newAV ();	268	mg->mg_obj = (SV *)newAV ();
254	}	269	}
255		270
256	av_push ((AV )mg->mg_obj, (SV )CvPADLIST (cv));	271	av = (AV *)mg->mg_obj;
		272
		273	if (AvFILLp (av) >= AvMAX (av))
		274	av_extend (av, AvMAX (av) + 1);
		275
		276	AvARRAY (av)[++AvFILLp (av)] = (SV *)CvPADLIST (cv);
257	}	277	}
258		278
259	#define SB do {	279	#define SB do {
260	#define SE } while (0)	280	#define SE } while (0)
261		281
…		…
265	#define REPLACE_SV(sv,val) SB SvREFCNT_dec(sv); (sv) = (val); (val) = 0; SE	285	#define REPLACE_SV(sv,val) SB SvREFCNT_dec(sv); (sv) = (val); (val) = 0; SE
266		286
267	static void	287	static void
268	load_state(Coro__State c)	288	load_state(Coro__State c)
269	{	289	{
270	PL_dowarn = c->dowarn;	290	#define VAR(name,type) PL_ ## name = c->name;
271	PL_in_eval = c->in_eval;	291	# include "state.h"
272		292	#undef VAR
273	PL_curstackinfo = c->curstackinfo;
274	PL_curstack = c->curstack;
275	PL_mainstack = c->mainstack;
276	PL_stack_sp = c->stack_sp;
277	PL_op = c->op;
278	PL_curpad = c->curpad;
279	PL_comppad = c->comppad;
280	PL_compcv = c->compcv;
281	PL_stack_base = c->stack_base;
282	PL_stack_max = c->stack_max;
283	PL_tmps_stack = c->tmps_stack;
284	PL_tmps_floor = c->tmps_floor;
285	PL_tmps_ix = c->tmps_ix;
286	PL_tmps_max = c->tmps_max;
287	PL_markstack = c->markstack;
288	PL_markstack_ptr = c->markstack_ptr;
289	PL_markstack_max = c->markstack_max;
290	PL_scopestack = c->scopestack;
291	PL_scopestack_ix = c->scopestack_ix;
292	PL_scopestack_max = c->scopestack_max;
293	PL_savestack = c->savestack;
294	PL_savestack_ix = c->savestack_ix;
295	PL_savestack_max = c->savestack_max;
296	#if PERL_VERSION < 9
297	PL_retstack = c->retstack;
298	PL_retstack_ix = c->retstack_ix;
299	PL_retstack_max = c->retstack_max;
300	#endif
301	PL_curpm = c->curpm;
302	PL_curcop = c->curcop;
303		293
304	if (c->defav) REPLACE_SV (GvAV (PL_defgv), c->defav);	294	if (c->defav) REPLACE_SV (GvAV (PL_defgv), c->defav);
305	if (c->defsv) REPLACE_SV (DEFSV , c->defsv);	295	if (c->defsv) REPLACE_SV (DEFSV , c->defsv);
306	if (c->errsv) REPLACE_SV (ERRSV , c->errsv);	296	if (c->errsv) REPLACE_SV (ERRSV , c->errsv);
307		297
…		…
310	CV *cv;	300	CV *cv;
311		301
312	/* now do the ugly restore mess */	302	/* now do the ugly restore mess */
313	while ((cv = (CV *)POPs))	303	while ((cv = (CV *)POPs))
314	{	304	{
315	AV padlist = (AV )POPs;
316
317	if (padlist)
318	{
319	put_padlist (cv); /* mark this padlist as available */	305	put_padlist (cv); /* mark this padlist as available */
320	CvPADLIST(cv) = padlist;	306	CvDEPTH (cv) = PTR2IV (POPs);
321	}	307	CvPADLIST (cv) = (AV *)POPs;
322
323	++CvDEPTH(cv);
324	}	308	}
325		309
326	PUTBACK;	310	PUTBACK;
327	}	311	}
328	}	312	}
…		…
350	PERL_CONTEXT *cx = &ccstk[cxix--];	334	PERL_CONTEXT *cx = &ccstk[cxix--];
351		335
352	if (CxTYPE(cx) == CXt_SUB)	336	if (CxTYPE(cx) == CXt_SUB)
353	{	337	{
354	CV *cv = cx->blk_sub.cv;	338	CV *cv = cx->blk_sub.cv;
		339
355	if (CvDEPTH(cv))	340	if (CvDEPTH (cv))
356	{	341	{
357	EXTEND (SP, CvDEPTH(cv)*2);	342	EXTEND (SP, 3);
358
359	while (--CvDEPTH(cv))
360	{
361	/* this tells the restore code to increment CvDEPTH */
362	PUSHs (Nullsv);
363	PUSHs ((SV *)cv);
364	}
365		343
366	PUSHs ((SV *)CvPADLIST(cv));	344	PUSHs ((SV *)CvPADLIST(cv));
		345	PUSHs (INT2PTR (SV *, CvDEPTH (cv)));
367	PUSHs ((SV *)cv);	346	PUSHs ((SV *)cv);
368		347
		348	CvDEPTH (cv) = 0;
369	get_padlist (cv);	349	get_padlist (cv);
370	}	350	}
371	}	351	}
372	#ifdef CXt_FORMAT	352	#ifdef CXt_FORMAT
373	else if (CxTYPE(cx) == CXt_FORMAT)	353	else if (CxTYPE(cx) == CXt_FORMAT)
…		…
392		372
393	c->defav = flags & TRANSFER_SAVE_DEFAV ? (AV *)SvREFCNT_inc (GvAV (PL_defgv)) : 0;	373	c->defav = flags & TRANSFER_SAVE_DEFAV ? (AV *)SvREFCNT_inc (GvAV (PL_defgv)) : 0;
394	c->defsv = flags & TRANSFER_SAVE_DEFSV ? SvREFCNT_inc (DEFSV) : 0;	374	c->defsv = flags & TRANSFER_SAVE_DEFSV ? SvREFCNT_inc (DEFSV) : 0;
395	c->errsv = flags & TRANSFER_SAVE_ERRSV ? SvREFCNT_inc (ERRSV) : 0;	375	c->errsv = flags & TRANSFER_SAVE_ERRSV ? SvREFCNT_inc (ERRSV) : 0;
396		376
397	c->dowarn = PL_dowarn;	377	#define VAR(name,type)c->name = PL_ ## name;
398	c->in_eval = PL_in_eval;	378	# include "state.h"
399		379	#undef VAR
400	c->curstackinfo = PL_curstackinfo;
401	c->curstack = PL_curstack;
402	c->mainstack = PL_mainstack;
403	c->stack_sp = PL_stack_sp;
404	c->op = PL_op;
405	c->curpad = PL_curpad;
406	c->comppad = PL_comppad;
407	c->compcv = PL_compcv;
408	c->stack_base = PL_stack_base;
409	c->stack_max = PL_stack_max;
410	c->tmps_stack = PL_tmps_stack;
411	c->tmps_floor = PL_tmps_floor;
412	c->tmps_ix = PL_tmps_ix;
413	c->tmps_max = PL_tmps_max;
414	c->markstack = PL_markstack;
415	c->markstack_ptr = PL_markstack_ptr;
416	c->markstack_max = PL_markstack_max;
417	c->scopestack = PL_scopestack;
418	c->scopestack_ix = PL_scopestack_ix;
419	c->scopestack_max = PL_scopestack_max;
420	c->savestack = PL_savestack;
421	c->savestack_ix = PL_savestack_ix;
422	c->savestack_max = PL_savestack_max;
423	#if PERL_VERSION < 9
424	c->retstack = PL_retstack;
425	c->retstack_ix = PL_retstack_ix;
426	c->retstack_max = PL_retstack_max;
427	#endif
428	c->curpm = PL_curpm;
429	c->curcop = PL_curcop;
430	}	380	}
431		381
432	/*	382	/*
433	* allocate various perl stacks. This is an exact copy	383	* allocate various perl stacks. This is an exact copy
434	* of perl.c:init_stacks, except that it uses less memory	384	* of perl.c:init_stacks, except that it uses less memory
…		…
436	* not usually need a lot of stackspace.	386	* not usually need a lot of stackspace.
437	*/	387	*/
438	static void	388	static void
439	coro_init_stacks ()	389	coro_init_stacks ()
440	{	390	{
441	LOCK;
442
443	PL_curstackinfo = new_stackinfo(96, 1024/sizeof(PERL_CONTEXT) - 1);	391	PL_curstackinfo = new_stackinfo(96, 1024/sizeof(PERL_CONTEXT) - 1);
444	PL_curstackinfo->si_type = PERLSI_MAIN;	392	PL_curstackinfo->si_type = PERLSI_MAIN;
445	PL_curstack = PL_curstackinfo->si_stack;	393	PL_curstack = PL_curstackinfo->si_stack;
446	PL_mainstack = PL_curstack; /* remember in case we switch stacks */	394	PL_mainstack = PL_curstack; /* remember in case we switch stacks */
447		395
…		…
468		416
469	New(54,PL_savestack,96,ANY);	417	New(54,PL_savestack,96,ANY);
470	PL_savestack_ix = 0;	418	PL_savestack_ix = 0;
471	PL_savestack_max = 96;	419	PL_savestack_max = 96;
472		420
473	#if PERL_VERSION < 9	421	#if !PERL_VERSION_ATLEAST (5,9,0)
474	New(54,PL_retstack,8,OP*);	422	New(54,PL_retstack,8,OP*);
475	PL_retstack_ix = 0;	423	PL_retstack_ix = 0;
476	PL_retstack_max = 8;	424	PL_retstack_max = 8;
477	#endif	425	#endif
478
479	UNLOCK;
480	}	426	}
481		427
482	/*	428	/*
483	* destroy the stacks, the callchain etc...	429	* destroy the stacks, the callchain etc...
484	*/	430	*/
485	static void	431	static void
486	destroy_stacks()	432	coro_destroy_stacks ()
487	{	433	{
488	if (!IN_DESTRUCT)	434	if (!IN_DESTRUCT)
489	{	435	{
490	/* is this ugly, I ask? */	436	/* is this ugly, I ask? */
491	LEAVE_SCOPE (0);	437	LEAVE_SCOPE (0);
…		…
522		468
523	Safefree (PL_tmps_stack);	469	Safefree (PL_tmps_stack);
524	Safefree (PL_markstack);	470	Safefree (PL_markstack);
525	Safefree (PL_scopestack);	471	Safefree (PL_scopestack);
526	Safefree (PL_savestack);	472	Safefree (PL_savestack);
527	#if PERL_VERSION < 9	473	#if !PERL_VERSION_ATLEAST (5,9,0)
528	Safefree (PL_retstack);	474	Safefree (PL_retstack);
529	#endif	475	#endif
530	}	476	}
531		477
532	static void	478	static void
533	setup_coro (struct coro *coro)	479	setup_coro (struct coro *coro)
534	{	480	{
535	/*	481	/*
536	* emulate part of the perl startup here.	482	* emulate part of the perl startup here.
537	*/	483	*/
538	dTHX;
539	dSP;
540	UNOP myop;
541	SV sub_init = (SV )get_cv ("Coro::State::coro_init", FALSE);
542		484
543	coro_init_stacks ();	485	coro_init_stacks ();
		486
544	/PL_curcop = 0;/	487	PL_curcop = 0;
545	/PL_in_eval = PL_in_eval;/ /* inherit */	488	PL_in_eval = 0;
		489	PL_curpm = 0;
		490
		491	{
		492	dSP;
		493	LOGOP myop;
		494
		495	/* I have no idea why this is needed, but it is */
		496	PUSHMARK (SP);
		497
546	SvREFCNT_dec (GvAV (PL_defgv));	498	SvREFCNT_dec (GvAV (PL_defgv));
547	GvAV (PL_defgv) = coro->args; coro->args = 0;	499	GvAV (PL_defgv) = coro->args; coro->args = 0;
548		500
549	SPAGAIN;
550
551	Zero (&myop, 1, UNOP);	501	Zero (&myop, 1, LOGOP);
552	myop.op_next = Nullop;	502	myop.op_next = Nullop;
553	myop.op_flags = OPf_WANT_VOID;	503	myop.op_flags = OPf_WANT_VOID;
554		504
555	PL_op = (OP *)&myop;	505	PL_op = (OP *)&myop;
556		506
557	PUSHMARK(SP);	507	PUSHMARK (SP);
558	XPUSHs (sub_init);	508	XPUSHs ((SV *)get_cv ("Coro::State::_coro_init", FALSE));
559	PUTBACK;	509	PUTBACK;
560	PL_op = PL_ppaddr[OP_ENTERSUB](aTHX);	510	PL_op = PL_ppaddr[OP_ENTERSUB](aTHX);
561	SPAGAIN;	511	SPAGAIN;
562		512
563	ENTER; /* necessary e.g. for dounwind */	513	ENTER; /* necessary e.g. for dounwind */
		514	}
564	}	515	}
565		516
566	static void	517	static void
567	free_coro_mortal ()	518	free_coro_mortal ()
568	{	519	{
…		…
571	SvREFCNT_dec (coro_mortal);	522	SvREFCNT_dec (coro_mortal);
572	coro_mortal = 0;	523	coro_mortal = 0;
573	}	524	}
574	}	525	}
575		526
		527	static void NOINLINE
		528	prepare_cctx (coro_cctx *cctx)
		529	{
		530	dSP;
		531	LOGOP myop;
		532
		533	Zero (&myop, 1, LOGOP);
		534	myop.op_next = PL_op;
		535	myop.op_flags = OPf_WANT_VOID;
		536
		537	sv_setiv (get_sv ("Coro::State::_cctx", FALSE), PTR2IV (cctx));
		538
		539	PUSHMARK (SP);
		540	XPUSHs ((SV *)get_cv ("Coro::State::_cctx_init", FALSE));
		541	PUTBACK;
		542	PL_restartop = PL_ppaddr[OP_ENTERSUB](aTHX);
		543	SPAGAIN;
		544	}
		545
576	static void	546	static void
577	coro_run (void *arg)	547	coro_run (void *arg)
578	{	548	{
		549	/* coro_run is the alternative epilogue of transfer() */
		550	UNLOCK;
		551
579	/*	552	/*
580	* this is a _very_ stripped down perl interpreter ;)	553	* this is a _very_ stripped down perl interpreter ;)
581	*/	554	*/
582	dTHX;
583	int ret;
584
585	UNLOCK;
586
587	PL_top_env = &PL_start_env;	555	PL_top_env = &PL_start_env;
588		556
589	sv_setiv (get_sv ("Coro::State::cctx_stack", FALSE), PTR2IV ((coro_stack *)arg));	557	/* inject call to cctx_init */
590	sv_setiv (get_sv ("Coro::State::cctx_restartop", FALSE), PTR2IV (PL_op));	558	prepare_cctx ((coro_cctx *)arg);
591
592	/* continue at cctx_init, without entersub */
593	PL_restartop = CvSTART (get_cv ("Coro::State::cctx_init", FALSE));
594		559
595	/* somebody will hit me for both perl_run and PL_restartop */	560	/* somebody will hit me for both perl_run and PL_restartop */
596	ret = perl_run (PERL_GET_CONTEXT);	561	perl_run (PL_curinterp);
597	printf ("ret %d\n", ret);//D
598		562
599	fputs ("FATAL: C coroutine fell over the edge of the world, aborting.\n", stderr);	563	fputs ("FATAL: C coroutine fell over the edge of the world, aborting. Did you call exit in a coroutine?\n", stderr);
600	abort ();	564	abort ();
601	}	565	}
602		566
603	static coro_stack *	567	static coro_cctx *
604	stack_new ()	568	cctx_new ()
605	{	569	{
606	coro_stack *stack;	570	coro_cctx *cctx;
607		571
		572	++cctx_count;
		573
608	New (0, stack, 1, coro_stack);	574	New (0, cctx, 1, coro_cctx);
609		575
610	#if HAVE_MMAP	576	#if HAVE_MMAP
611		577
612	stack->ssize = ((STACKSIZE * sizeof (long) + PAGESIZE - 1) / PAGESIZE + STACKGUARD) * PAGESIZE;	578	cctx->ssize = ((STACKSIZE * sizeof (long) + PAGESIZE - 1) / PAGESIZE + STACKGUARD) * PAGESIZE;
613	/* mmap suppsedly does allocate-on-write for us */	579	/* mmap suppsedly does allocate-on-write for us */
614	stack->sptr = mmap (0, stack->ssize, PROT_EXEC\|PROT_READ\|PROT_WRITE, MAP_PRIVATE\|MAP_ANONYMOUS, 0, 0);	580	cctx->sptr = mmap (0, cctx->ssize, PROT_EXEC\|PROT_READ\|PROT_WRITE, MAP_PRIVATE\|MAP_ANONYMOUS, 0, 0);
615		581
616	if (stack->sptr == (void *)-1)	582	if (cctx->sptr == (void *)-1)
617	{	583	{
618	perror ("FATAL: unable to mmap stack for coroutine");	584	perror ("FATAL: unable to mmap stack for coroutine");
619	_exit (EXIT_FAILURE);	585	_exit (EXIT_FAILURE);
620	}	586	}
621		587
622	# if STACKGUARD	588	# if STACKGUARD
623	mprotect (stack->sptr, STACKGUARD * PAGESIZE, PROT_NONE);	589	mprotect (cctx->sptr, STACKGUARD * PAGESIZE, PROT_NONE);
624	# endif	590	# endif
625		591
626	#else	592	#else
627		593
628	stack->ssize = STACKSIZE * (long)sizeof (long);	594	cctx->ssize = STACKSIZE * (long)sizeof (long);
629	New (0, stack->sptr, STACKSIZE, long);	595	New (0, cctx->sptr, STACKSIZE, long);
630		596
631	if (!stack->sptr)	597	if (!cctx->sptr)
632	{	598	{
633	perror (stderr, "FATAL: unable to malloc stack for coroutine");	599	perror ("FATAL: unable to malloc stack for coroutine");
634	_exit (EXIT_FAILURE);	600	_exit (EXIT_FAILURE);
635	}	601	}
636		602
637	#endif	603	#endif
638		604
		605	#if USE_VALGRIND
		606	cctx->valgrind_id = VALGRIND_STACK_REGISTER (
		607	STACKGUARD * PAGESIZE + (char *)cctx->sptr,
		608	cctx->ssize + (char *)cctx->sptr
		609	);
		610	#endif
		611
639	coro_create (&stack->cctx, coro_run, (void *)stack, stack->sptr, stack->ssize);	612	coro_create (&cctx->cctx, coro_run, (void *)cctx, cctx->sptr, cctx->ssize);
640		613
641	return stack;	614	return cctx;
642	}	615	}
643		616
644	static void	617	static void
645	stack_free (coro_stack *stack)	618	cctx_free (coro_cctx *cctx)
646	{	619	{
647	if (!stack)	620	if (!cctx)
648	return;	621	return;
649		622
		623	--cctx_count;
		624
		625	#if USE_VALGRIND
		626	VALGRIND_STACK_DEREGISTER (cctx->valgrind_id);
		627	#endif
		628
650	#if HAVE_MMAP	629	#if HAVE_MMAP
651	munmap (stack->sptr, stack->ssize);	630	munmap (cctx->sptr, cctx->ssize);
652	#else	631	#else
653	Safefree (stack->sptr);	632	Safefree (cctx->sptr);
654	#endif	633	#endif
655		634
656	Safefree (stack);	635	Safefree (cctx);
657	}	636	}
658		637
659	static coro_stack *stack_first;
660
661	static coro_stack *	638	static coro_cctx *
662	stack_get ()	639	cctx_get ()
663	{	640	{
664	coro_stack *stack;	641	coro_cctx *cctx;
665		642
666	if (stack_first)	643	if (cctx_first)
667	{	644	{
668	stack = stack_first;	645	--cctx_idle;
		646	cctx = cctx_first;
669	stack_first = stack->next;	647	cctx_first = cctx->next;
670	}	648	}
671	else	649	else
672	{	650	{
673	stack = stack_new ();	651	cctx = cctx_new ();
674	PL_op = PL_op->op_next;	652	PL_op = PL_op->op_next;
675	}	653	}
676		654
677	return stack;	655	return cctx;
678	}	656	}
679		657
680	static void	658	static void
681	stack_put (coro_stack *stack)	659	cctx_put (coro_cctx *cctx)
682	{	660	{
683	stack->next = stack_first;	661	++cctx_idle;
684	stack_first = stack;	662	cctx->next = cctx_first;
		663	cctx_first = cctx;
685	}	664	}
686		665
687	/* never call directly, always through the coro_state_transfer global variable */	666	/* never call directly, always through the coro_state_transfer global variable */
688	static void	667	static void NOINLINE
689	transfer_impl (struct coro prev, struct coro next, int flags)	668	transfer (struct coro prev, struct coro next, int flags)
690	{	669	{
691	dSTACKLEVEL;	670	dSTACKLEVEL;
692		671
693	/* sometimes transfer is only called to set idle_sp */	672	/* sometimes transfer is only called to set idle_sp */
694	if (flags == TRANSFER_SET_STACKLEVEL)	673	if (flags == TRANSFER_SET_STACKLEVEL)
695	((coro_stack *)prev)->idle_sp = STACKLEVEL;	674	((coro_cctx *)prev)->idle_sp = STACKLEVEL;
696	else if (prev != next)	675	else if (prev != next)
697	{	676	{
698	coro_stack *prev__stack;	677	coro_cctx *prev__cctx;
		678
		679	if (!prev->cctx)
		680	{
		681	/* create a new empty context */
		682	Newz (0, prev->cctx, 1, coro_cctx);
		683	prev->cctx->inuse = 1;
		684	prev->flags \|= CF_RUNNING;
		685	}
		686
		687	if (!prev->flags & CF_RUNNING)
		688	croak ("Coro::State::transfer called with non-running prev Coro::State, but can only transfer from running states");
		689
		690	if (next->flags & CF_RUNNING)
		691	croak ("Coro::State::transfer called with running next Coro::State, but can only transfer to inactive states");
		692
		693	prev->flags &= ~CF_RUNNING;
		694	next->flags \|= CF_RUNNING;
699		695
700	LOCK;	696	LOCK;
701		697
702	if (next->mainstack)	698	if (next->mainstack)
703	{	699	{
…		…
710	/* need to start coroutine */	706	/* need to start coroutine */
711	/* first get rid of the old state */	707	/* first get rid of the old state */
712	SAVE (prev, -1);	708	SAVE (prev, -1);
713	/* setup coroutine call */	709	/* setup coroutine call */
714	setup_coro (next);	710	setup_coro (next);
715	/* need a stack */	711	/* need a new stack */
716	next->stack = 0;	712	assert (!next->stack);
717	}	713	}
718		714
719	if (!prev->stack)
720	/* create a new empty context */
721	Newz (0, prev->stack, 1, coro_stack);
722
723	prev__stack = prev->stack;	715	prev__cctx = prev->cctx;
724		716
725	/* possibly "free" the stack */	717	/* possibly "free" the cctx */
726	if (prev__stack->idle_sp == STACKLEVEL)	718	if (prev__cctx->idle_sp == STACKLEVEL)
727	{	719	{
		720	assert (PL_top_env == prev__cctx->top_env);
		721
728	stack_put (prev__stack);	722	cctx_put (prev__cctx);
729	prev->stack = 0;	723	prev->cctx = 0;
730	}	724	}
		725	else if (prev__cctx->idle_sp) //D
		726	fprintf (stderr, "coro %p has own stack %p-%p\n", prev__cctx, prev__cctx->idle_sp, STACKLEVEL);//D
731		727
732	if (!next->stack)	728	if (!next->cctx)
733	next->stack = stack_get ();	729	next->cctx = cctx_get ();
734		730
735	if (prev__stack != next->stack)	731	if (prev__cctx != next->cctx)
736	{	732	{
		733	assert ( prev__cctx->inuse);
		734	assert (!next->cctx->inuse);
		735
		736	prev__cctx->inuse = 0;
		737	next->cctx->inuse = 1;
		738
737	prev__stack->top_env = PL_top_env;	739	prev__cctx->top_env = PL_top_env;
738	PL_top_env = next->stack->top_env;	740	PL_top_env = next->cctx->top_env;
739	coro_transfer (&prev__stack->cctx, &next->stack->cctx);	741	coro_transfer (&prev__cctx->cctx, &next->cctx->cctx);
740	}	742	}
741		743
742	free_coro_mortal ();	744	free_coro_mortal ();
743		745
744	UNLOCK;	746	UNLOCK;
745	}	747	}
746	}	748	}
747
748	/* use this function pointer to call the above function */
749	/* this is done to increase chances of the compiler not inlining the call */
750	/* not static to make it even harder for the compiler (and theoretically impossible in most cases */
751	void (coro_state_transfer)(struct coro prev, struct coro *next, int flags) = transfer_impl;
752		749
753	struct transfer_args	750	struct transfer_args
754	{	751	{
755	struct coro prev, next;	752	struct coro prev, next;
756	int flags;	753	int flags;
757	};	754	};
758		755
759	#define TRANSFER(ta) coro_state_transfer ((ta).prev, (ta).next, (ta).flags)	756	#define TRANSFER(ta) transfer ((ta).prev, (ta).next, (ta).flags)
760		757
761	static void	758	static void
762	coro_state_destroy (struct coro *coro)	759	coro_state_destroy (struct coro *coro)
763	{	760	{
764	if (coro->refcnt--)	761	if (coro->refcnt--)
765	return;	762	return;
		763
		764	if (coro->flags & CF_RUNNING)
		765	croak ("FATAL: tried to destroy currently running coroutine");
766		766
767	if (coro->mainstack && coro->mainstack != main_mainstack)	767	if (coro->mainstack && coro->mainstack != main_mainstack)
768	{	768	{
769	struct coro temp;	769	struct coro temp;
770		770
771	SAVE ((&temp), TRANSFER_SAVE_ALL);	771	SAVE ((&temp), TRANSFER_SAVE_ALL);
772	LOAD (coro);	772	LOAD (coro);
773		773
774	destroy_stacks ();	774	coro_destroy_stacks ();
775		775
776	LOAD ((&temp)); /* this will get rid of defsv etc.. */	776	LOAD ((&temp)); /* this will get rid of defsv etc.. */
777		777
778	coro->mainstack = 0;	778	coro->mainstack = 0;
779	}	779	}
780		780
781	stack_free (coro->stack);	781	cctx_free (coro->cctx);
782	SvREFCNT_dec (coro->args);	782	SvREFCNT_dec (coro->args);
783	Safefree (coro);	783	Safefree (coro);
784	}	784	}
785		785
786	static int	786	static int
…		…
802	++coro->refcnt;	802	++coro->refcnt;
803		803
804	return 0;	804	return 0;
805	}	805	}
806		806
807	static MGVTBL coro_state_vtbl = { 0, 0, 0, 0, coro_state_clear, 0, coro_state_dup, 0 };	807	static MGVTBL coro_state_vtbl = {
		808	0, 0, 0, 0,
		809	coro_state_clear,
		810	0,
		811	#ifdef MGf_DUP
		812	coro_state_dup,
		813	#else
		814	# define MGf_DUP 0
		815	#endif
		816	};
808		817
809	static struct coro *	818	static struct coro *
810	SvSTATE (SV *coro)	819	SvSTATE (SV *coro)
811	{	820	{
812	HV *stash;	821	HV *stash;
…		…
859	static GV coro_current, coro_idle;	868	static GV coro_current, coro_idle;
860	static AV *coro_ready [PRIO_MAX-PRIO_MIN+1];	869	static AV *coro_ready [PRIO_MAX-PRIO_MIN+1];
861	static int coro_nready;	870	static int coro_nready;
862		871
863	static void	872	static void
864	coro_enq (SV *sv)	873	coro_enq (SV *coro_sv)
865	{	874	{
866	int prio;
867
868	if (SvTYPE (sv) != SVt_PVHV)
869	croak ("Coro::ready tried to enqueue something that is not a coroutine");
870
871	prio = SvSTATE (sv)->prio;
872
873	av_push (coro_ready [prio - PRIO_MIN], sv);	875	av_push (coro_ready [SvSTATE (coro_sv)->prio - PRIO_MIN], coro_sv);
874	coro_nready++;	876	coro_nready++;
875	}	877	}
876		878
877	static SV *	879	static SV *
878	coro_deq (int min_prio)	880	coro_deq (int min_prio)
…		…
891	}	893	}
892		894
893	return 0;	895	return 0;
894	}	896	}
895		897
896	static void	898	static int
897	api_ready (SV *coro)	899	api_ready (SV *coro_sv)
898	{	900	{
899	dTHX;	901	struct coro *coro;
900		902
901	if (SvROK (coro))	903	if (SvROK (coro_sv))
902	coro = SvRV (coro);	904	coro_sv = SvRV (coro_sv);
		905
		906	coro = SvSTATE (coro_sv);
		907
		908	if (coro->flags & CF_READY)
		909	return 0;
		910
		911	if (coro->flags & CF_RUNNING)
		912	croak ("Coro::ready called on currently running coroutine");
		913
		914	coro->flags \|= CF_READY;
903		915
904	LOCK;	916	LOCK;
905	coro_enq (SvREFCNT_inc (coro));	917	coro_enq (SvREFCNT_inc (coro_sv));
906	UNLOCK;	918	UNLOCK;
		919
		920	return 1;
		921	}
		922
		923	static int
		924	api_is_ready (SV *coro_sv)
		925	{
		926	return !!SvSTATE (coro_sv)->flags & CF_READY;
907	}	927	}
908		928
909	static void	929	static void
910	prepare_schedule (struct transfer_args *ta)	930	prepare_schedule (struct transfer_args *ta)
911	{	931	{
912	SV current, prev, *next;	932	SV current, prev, *next;
913
914	LOCK;
915		933
916	current = GvSV (coro_current);	934	current = GvSV (coro_current);
917		935
918	for (;;)	936	for (;;)
919	{	937	{
920	LOCK;	938	LOCK;
921
922	next = coro_deq (PRIO_MIN);	939	next = coro_deq (PRIO_MIN);
		940	UNLOCK;
923		941
924	if (next)	942	if (next)
925	break;	943	break;
926
927	UNLOCK;
928		944
929	{	945	{
930	dSP;	946	dSP;
931		947
932	ENTER;	948	ENTER;
…		…
943		959
944	prev = SvRV (current);	960	prev = SvRV (current);
945	SvRV (current) = next;	961	SvRV (current) = next;
946		962
947	/* free this only after the transfer */	963	/* free this only after the transfer */
		964	LOCK;
948	free_coro_mortal ();	965	free_coro_mortal ();
		966	UNLOCK;
949	coro_mortal = prev;	967	coro_mortal = prev;
950		968
951	ta->prev = SvSTATE (prev);	969	ta->prev = SvSTATE (prev);
952	ta->next = SvSTATE (next);	970	ta->next = SvSTATE (next);
953	ta->flags = TRANSFER_SAVE_ALL;	971	ta->flags = TRANSFER_SAVE_ALL;
954		972
955	UNLOCK;	973	ta->next->flags &= ~CF_READY;
956	}	974	}
957		975
958	static void	976	static void
959	prepare_cede (struct transfer_args *ta)	977	prepare_cede (struct transfer_args *ta)
960	{	978	{
961	LOCK;	979	api_ready (GvSV (coro_current));
962	coro_enq (SvREFCNT_inc (SvRV (GvSV (coro_current))));
963	UNLOCK;
964		980
965	prepare_schedule (ta);	981	prepare_schedule (ta);
966	}	982	}
967		983
968	static void	984	static void
…		…
1025	sv_magicext ((SV )hv, 0, PERL_MAGIC_ext, &coro_state_vtbl, (char )coro, 0)->mg_flags \|= MGf_DUP;	1041	sv_magicext ((SV )hv, 0, PERL_MAGIC_ext, &coro_state_vtbl, (char )coro, 0)->mg_flags \|= MGf_DUP;
1026	RETVAL = sv_bless (newRV_noinc ((SV *)hv), gv_stashpv (klass, 1));	1042	RETVAL = sv_bless (newRV_noinc ((SV *)hv), gv_stashpv (klass, 1));
1027		1043
1028	for (i = 1; i < items; i++)	1044	for (i = 1; i < items; i++)
1029	av_push (coro->args, newSVsv (ST (i)));	1045	av_push (coro->args, newSVsv (ST (i)));
1030
1031	/coro->mainstack = 0; //actual work is done inside transfer /
1032	/coro->stack = 0;/
1033	}	1046	}
1034	OUTPUT:	1047	OUTPUT:
1035	RETVAL	1048	RETVAL
1036		1049
1037	void	1050	void
…		…
1046	struct transfer_args ta;	1059	struct transfer_args ta;
1047		1060
1048	switch (ix)	1061	switch (ix)
1049	{	1062	{
1050	case 0:	1063	case 0:
1051	ta.prev = (struct coro )INT2PTR (coro_stack , SvIV (ST (0)));	1064	ta.prev = (struct coro )INT2PTR (coro_cctx , SvIV (ST (0)));
1052	ta.next = 0;	1065	ta.next = 0;
1053	ta.flags = TRANSFER_SET_STACKLEVEL;	1066	ta.flags = TRANSFER_SET_STACKLEVEL;
1054	break;	1067	break;
1055		1068
1056	case 1:	1069	case 1:
…		…
1110	++coro_src->refcnt;	1123	++coro_src->refcnt;
1111	sv_magicext (SvRV (dst), 0, PERL_MAGIC_ext, &coro_state_vtbl, (char *)coro_src, 0)->mg_flags \|= MGf_DUP;	1124	sv_magicext (SvRV (dst), 0, PERL_MAGIC_ext, &coro_state_vtbl, (char *)coro_src, 0)->mg_flags \|= MGf_DUP;
1112	}	1125	}
1113		1126
1114	void	1127	void
1115	_nonlocal_goto (IV nextop)
1116	CODE:
1117	/* uuh, somebody will kill me again for this */
1118	PL_op->op_next = INT2PTR (OP *, nextop);
1119
1120	void
1121	_exit (code)	1128	_exit (code)
1122	int code	1129	int code
1123	PROTOTYPE: $	1130	PROTOTYPE: $
1124	CODE:	1131	CODE:
1125	_exit (code);	1132	_exit (code);
		1133
		1134	int
		1135	cctx_count ()
		1136	CODE:
		1137	RETVAL = cctx_count;
		1138	OUTPUT:
		1139	RETVAL
		1140
		1141	int
		1142	cctx_idle ()
		1143	CODE:
		1144	RETVAL = cctx_idle;
		1145	OUTPUT:
		1146	RETVAL
1126		1147
1127	MODULE = Coro::State PACKAGE = Coro	1148	MODULE = Coro::State PACKAGE = Coro
1128		1149
1129	BOOT:	1150	BOOT:
1130	{	1151	{
…		…
1149	SV *sv = perl_get_sv("Coro::API", 1);	1170	SV *sv = perl_get_sv("Coro::API", 1);
1150		1171
1151	coroapi.schedule = api_schedule;	1172	coroapi.schedule = api_schedule;
1152	coroapi.cede = api_cede;	1173	coroapi.cede = api_cede;
1153	coroapi.ready = api_ready;	1174	coroapi.ready = api_ready;
		1175	coroapi.is_ready = api_is_ready;
1154	coroapi.nready = &coro_nready;	1176	coroapi.nready = &coro_nready;
1155	coroapi.current = coro_current;	1177	coroapi.current = coro_current;
1156		1178
1157	GCoroAPI = &coroapi;	1179	GCoroAPI = &coroapi;
1158	sv_setiv (sv, (IV)&coroapi);	1180	sv_setiv (sv, (IV)&coroapi);
…		…
1178		1200
1179	coro->prio = newprio;	1201	coro->prio = newprio;
1180	}	1202	}
1181	}	1203	}
1182		1204
1183	void	1205	SV *
1184	ready (SV *self)	1206	ready (SV *self)
1185	PROTOTYPE: $	1207	PROTOTYPE: $
1186	CODE:	1208	CODE:
1187	api_ready (self);	1209	RETVAL = boolSV (api_ready (self));
		1210	OUTPUT:
		1211	RETVAL
		1212
		1213	SV *
		1214	is_ready (SV *self)
		1215	PROTOTYPE: $
		1216	CODE:
		1217	RETVAL = boolSV (api_is_ready (self));
		1218	OUTPUT:
		1219	RETVAL
1188		1220
1189	int	1221	int
1190	nready (...)	1222	nready (...)
1191	PROTOTYPE:	1223	PROTOTYPE:
1192	CODE:	1224	CODE:

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Comparing Coro/Coro/State.xs (file contents): Revision 1.98 by root, Sun Nov 26 21:25:53 2006 UTC vs. Revision 1.113 by root, Thu Nov 30 20:54:24 2006 UTC

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Comparing Coro/Coro/State.xs (file contents):
Revision 1.98 by root, Sun Nov 26 21:25:53 2006 UTC vs.
Revision 1.113 by root, Thu Nov 30 20:54:24 2006 UTC