[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 1.116 by root, Fri Dec 1 14:01:43 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	/* the maximum number of idle cctx that will be pooled */
		14	#define MAX_IDLE_CCTX 8
		15
		16	#define PERL_VERSION_ATLEAST(a,b,c) \
		17	(PERL_REVISION > (a) \
		18	\|\| (PERL_REVISION == (a) \
		19	&& (PERL_VERSION > (b) \
		20	\|\| (PERL_VERSION == (b) && PERLSUBVERSION >= (c)))))
		21
		22	#if !PERL_VERSION_ATLEAST (5,6,0)
10	# ifndef PL_ppaddr	23	# ifndef PL_ppaddr
11	# define PL_ppaddr ppaddr	24	# define PL_ppaddr ppaddr
12	# endif	25	# endif
13	# ifndef call_sv	26	# ifndef call_sv
14	# define call_sv perl_call_sv	27	# define call_sv perl_call_sv
…		…
52	# ifndef PAGESIZE	65	# ifndef PAGESIZE
53	# define PAGESIZE pagesize	66	# define PAGESIZE pagesize
54	# define BOOT_PAGESIZE pagesize = sysconf (_SC_PAGESIZE)	67	# define BOOT_PAGESIZE pagesize = sysconf (_SC_PAGESIZE)
55	static long pagesize;	68	static long pagesize;
56	# else	69	# else
57	# define BOOT_PAGESIZE	70	# define BOOT_PAGESIZE (void)0
58	# endif	71	# endif
		72	#else
		73	# define PAGESIZE 0
		74	# define BOOT_PAGESIZE (void)0
59	#endif	75	#endif
60		76
61	/* 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
62	* 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
63	* and should be unique. */	79	* and should be unique. */
64	#define dSTACKLEVEL int stacklevel	80	#define dSTACKLEVEL int stacklevel
65	#define STACKLEVEL ((void *)&stacklevel)	81	#define STACKLEVEL ((void *)&stacklevel)
66		82
67	#define IN_DESTRUCT (PL_main_cv == Nullcv)	83	#define IN_DESTRUCT (PL_main_cv == Nullcv)
		84
		85	#if __GNUC__ >= 3
		86	# define attribute(x) __attribute__(x)
		87	#else
		88	# define attribute(x)
		89	#endif
		90
		91	#define NOINLINE attribute ((noinline))
68		92
69	#include "CoroAPI.h"	93	#include "CoroAPI.h"
70		94
71	#define TRANSFER_SET_STACKLEVEL 0x8bfbfbfb /* magic cookie */	95	#define TRANSFER_SET_STACKLEVEL 0x8bfbfbfb /* magic cookie */
72		96
…		…
82	static struct CoroAPI coroapi;	106	static struct CoroAPI coroapi;
83	static AV main_mainstack; / used to differentiate between $main and others */	107	static AV main_mainstack; / used to differentiate between $main and others */
84	static HV coro_state_stash, coro_stash;	108	static HV coro_state_stash, coro_stash;
85	static SV coro_mortal; / will be freed after next transfer */	109	static SV coro_mortal; / will be freed after next transfer */
86		110
		111	static struct coro_cctx *cctx_first;
		112	static int cctx_count, cctx_idle;
		113
87	/* this is a structure representing a c-level coroutine */	114	/* this is a structure representing a c-level coroutine */
88	typedef struct coro_stack {	115	typedef struct coro_cctx {
89	struct coro_stack *next;	116	struct coro_cctx *next;
90		117
91	/* the stack */	118	/* the stack */
92	void *sptr;	119	void *sptr;
93	long ssize; /* positive == mmap, otherwise malloc */	120	long ssize; /* positive == mmap, otherwise malloc */
94		121
95	/* cpu state */	122	/* cpu state */
96	void idle_sp; / sp of top-level transfer/schedule/cede call */	123	void idle_sp; / sp of top-level transfer/schedule/cede call */
97	JMPENV *top_env;	124	JMPENV *top_env;
98	coro_context cctx;	125	coro_context cctx;
99	} coro_stack;	126
		127	int inuse;
		128
		129	#if USE_VALGRIND
		130	int valgrind_id;
		131	#endif
		132	} coro_cctx;
		133
		134	enum {
		135	CF_RUNNING, /* coroutine is running */
		136	CF_READY, /* coroutine is ready */
		137	};
100		138
101	/* this is a structure representing a perl-level coroutine */	139	/* this is a structure representing a perl-level coroutine */
102	struct coro {	140	struct coro {
103	/* the c coroutine allocated to this perl coroutine, if any */	141	/* the c coroutine allocated to this perl coroutine, if any */
104	coro_stack *stack;	142	coro_cctx *cctx;
105		143
106	/* data associated with this coroutine (initial args) */	144	/* data associated with this coroutine (initial args) */
107	AV *args;	145	AV *args;
108	int refcnt;	146	int refcnt;
		147	int flags;
109		148
110	/* optionally saved, might be zero */	149	/* optionally saved, might be zero */
111	AV *defav;	150	AV *defav;
112	SV *defsv;	151	SV *defsv;
113	SV *errsv;	152	SV *errsv;
114		153
115	/* saved global state not related to stacks */	154	#define VAR(name,type) type name;
116	U8 dowarn;	155	# include "state.h"
117	I32 in_eval;	156	#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		157
149	/* coro process data */	158	/* coro process data */
150	int prio;	159	int prio;
151	};	160	};
152		161
…		…
159	AV *padlist = CvPADLIST (cv);	168	AV *padlist = CvPADLIST (cv);
160	AV newpadlist, newpad;	169	AV newpadlist, newpad;
161		170
162	newpadlist = newAV ();	171	newpadlist = newAV ();
163	AvREAL_off (newpadlist);	172	AvREAL_off (newpadlist);
164	#if PERL_VERSION < 9	173	#if PERL_VERSION_ATLEAST (5,9,0)
		174	Perl_pad_push (aTHX_ padlist, AvFILLp (padlist) + 1);
		175	#else
165	Perl_pad_push (aTHX_ padlist, AvFILLp (padlist) + 1, 1);	176	Perl_pad_push (aTHX_ padlist, AvFILLp (padlist) + 1, 1);
166	#else
167	Perl_pad_push (aTHX_ padlist, AvFILLp (padlist) + 1);
168	#endif	177	#endif
169	newpad = (AV *)AvARRAY (padlist)[AvFILLp (padlist)];	178	newpad = (AV *)AvARRAY (padlist)[AvFILLp (padlist)];
170	--AvFILLp (padlist);	179	--AvFILLp (padlist);
171		180
172	av_store (newpadlist, 0, SvREFCNT_inc (*av_fetch (padlist, 0, FALSE)));	181	av_store (newpadlist, 0, SvREFCNT_inc (*av_fetch (padlist, 0, FALSE)));
…		…
216		225
217	#define PERL_MAGIC_coro PERL_MAGIC_ext	226	#define PERL_MAGIC_coro PERL_MAGIC_ext
218		227
219	static MGVTBL vtbl_coro = {0, 0, 0, 0, coro_cv_free};	228	static MGVTBL vtbl_coro = {0, 0, 0, 0, coro_cv_free};
220		229
		230	#define CORO_MAGIC(cv) \
		231	SvMAGIC (cv) \
		232	? SvMAGIC (cv)->mg_type == PERL_MAGIC_coro \
		233	? SvMAGIC (cv) \
		234	: mg_find ((SV *)cv, PERL_MAGIC_coro) \
		235	: 0
		236
221	/* the next two functions merely cache the padlists */	237	/* the next two functions merely cache the padlists */
222	static void	238	static void
223	get_padlist (CV *cv)	239	get_padlist (CV *cv)
224	{	240	{
225	MAGIC mg = mg_find ((SV )cv, PERL_MAGIC_coro);	241	MAGIC *mg = CORO_MAGIC (cv);
		242	AV *av;
226		243
227	if (mg && AvFILLp ((AV *)mg->mg_obj) >= 0)	244	if (mg && AvFILLp ((av = (AV *)mg->mg_obj)) >= 0)
228	CvPADLIST (cv) = (AV )av_pop ((AV )mg->mg_obj);	245	CvPADLIST (cv) = (AV *)AvARRAY (av)[AvFILLp (av)--];
229	else	246	else
230	{	247	{
231	#if 0	248	#if 0
232	/* this is probably cleaner, but also slower? */	249	/* this is probably cleaner, but also slower? */
233	CV *cp = Perl_cv_clone (cv);	250	CV *cp = Perl_cv_clone (cv);
…		…
241	}	258	}
242		259
243	static void	260	static void
244	put_padlist (CV *cv)	261	put_padlist (CV *cv)
245	{	262	{
246	MAGIC mg = mg_find ((SV )cv, PERL_MAGIC_coro);	263	MAGIC *mg = CORO_MAGIC (cv);
		264	AV *av;
247		265
248	if (!mg)	266	if (!mg)
249	{	267	{
250	sv_magic ((SV *)cv, 0, PERL_MAGIC_coro, 0, 0);	268	sv_magic ((SV *)cv, 0, PERL_MAGIC_coro, 0, 0);
251	mg = mg_find ((SV *)cv, PERL_MAGIC_coro);	269	mg = mg_find ((SV *)cv, PERL_MAGIC_coro);
252	mg->mg_virtual = &vtbl_coro;	270	mg->mg_virtual = &vtbl_coro;
253	mg->mg_obj = (SV *)newAV ();	271	mg->mg_obj = (SV *)newAV ();
254	}	272	}
255		273
256	av_push ((AV )mg->mg_obj, (SV )CvPADLIST (cv));	274	av = (AV *)mg->mg_obj;
		275
		276	if (AvFILLp (av) >= AvMAX (av))
		277	av_extend (av, AvMAX (av) + 1);
		278
		279	AvARRAY (av)[++AvFILLp (av)] = (SV *)CvPADLIST (cv);
257	}	280	}
258		281
259	#define SB do {	282	#define SB do {
260	#define SE } while (0)	283	#define SE } while (0)
261		284
…		…
265	#define REPLACE_SV(sv,val) SB SvREFCNT_dec(sv); (sv) = (val); (val) = 0; SE	288	#define REPLACE_SV(sv,val) SB SvREFCNT_dec(sv); (sv) = (val); (val) = 0; SE
266		289
267	static void	290	static void
268	load_state(Coro__State c)	291	load_state(Coro__State c)
269	{	292	{
270	PL_dowarn = c->dowarn;	293	#define VAR(name,type) PL_ ## name = c->name;
271	PL_in_eval = c->in_eval;	294	# include "state.h"
272		295	#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		296
304	if (c->defav) REPLACE_SV (GvAV (PL_defgv), c->defav);	297	if (c->defav) REPLACE_SV (GvAV (PL_defgv), c->defav);
305	if (c->defsv) REPLACE_SV (DEFSV , c->defsv);	298	if (c->defsv) REPLACE_SV (DEFSV , c->defsv);
306	if (c->errsv) REPLACE_SV (ERRSV , c->errsv);	299	if (c->errsv) REPLACE_SV (ERRSV , c->errsv);
307		300
…		…
310	CV *cv;	303	CV *cv;
311		304
312	/* now do the ugly restore mess */	305	/* now do the ugly restore mess */
313	while ((cv = (CV *)POPs))	306	while ((cv = (CV *)POPs))
314	{	307	{
315	AV padlist = (AV )POPs;
316
317	if (padlist)
318	{
319	put_padlist (cv); /* mark this padlist as available */	308	put_padlist (cv); /* mark this padlist as available */
320	CvPADLIST(cv) = padlist;	309	CvDEPTH (cv) = PTR2IV (POPs);
321	}	310	CvPADLIST (cv) = (AV *)POPs;
322
323	++CvDEPTH(cv);
324	}	311	}
325		312
326	PUTBACK;	313	PUTBACK;
327	}	314	}
328	}	315	}
…		…
350	PERL_CONTEXT *cx = &ccstk[cxix--];	337	PERL_CONTEXT *cx = &ccstk[cxix--];
351		338
352	if (CxTYPE(cx) == CXt_SUB)	339	if (CxTYPE(cx) == CXt_SUB)
353	{	340	{
354	CV *cv = cx->blk_sub.cv;	341	CV *cv = cx->blk_sub.cv;
		342
355	if (CvDEPTH(cv))	343	if (CvDEPTH (cv))
356	{	344	{
357	EXTEND (SP, CvDEPTH(cv)*2);	345	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		346
366	PUSHs ((SV *)CvPADLIST(cv));	347	PUSHs ((SV *)CvPADLIST(cv));
		348	PUSHs (INT2PTR (SV *, CvDEPTH (cv)));
367	PUSHs ((SV *)cv);	349	PUSHs ((SV *)cv);
368		350
		351	CvDEPTH (cv) = 0;
369	get_padlist (cv);	352	get_padlist (cv);
370	}	353	}
371	}	354	}
372	#ifdef CXt_FORMAT	355	#ifdef CXt_FORMAT
373	else if (CxTYPE(cx) == CXt_FORMAT)	356	else if (CxTYPE(cx) == CXt_FORMAT)
…		…
392		375
393	c->defav = flags & TRANSFER_SAVE_DEFAV ? (AV *)SvREFCNT_inc (GvAV (PL_defgv)) : 0;	376	c->defav = flags & TRANSFER_SAVE_DEFAV ? (AV *)SvREFCNT_inc (GvAV (PL_defgv)) : 0;
394	c->defsv = flags & TRANSFER_SAVE_DEFSV ? SvREFCNT_inc (DEFSV) : 0;	377	c->defsv = flags & TRANSFER_SAVE_DEFSV ? SvREFCNT_inc (DEFSV) : 0;
395	c->errsv = flags & TRANSFER_SAVE_ERRSV ? SvREFCNT_inc (ERRSV) : 0;	378	c->errsv = flags & TRANSFER_SAVE_ERRSV ? SvREFCNT_inc (ERRSV) : 0;
396		379
397	c->dowarn = PL_dowarn;	380	#define VAR(name,type)c->name = PL_ ## name;
398	c->in_eval = PL_in_eval;	381	# include "state.h"
399		382	#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	}	383	}
431		384
432	/*	385	/*
433	* allocate various perl stacks. This is an exact copy	386	* allocate various perl stacks. This is an exact copy
434	* of perl.c:init_stacks, except that it uses less memory	387	* of perl.c:init_stacks, except that it uses less memory
…		…
436	* not usually need a lot of stackspace.	389	* not usually need a lot of stackspace.
437	*/	390	*/
438	static void	391	static void
439	coro_init_stacks ()	392	coro_init_stacks ()
440	{	393	{
441	LOCK;
442
443	PL_curstackinfo = new_stackinfo(96, 1024/sizeof(PERL_CONTEXT) - 1);	394	PL_curstackinfo = new_stackinfo(128, 1024/sizeof(PERL_CONTEXT));
444	PL_curstackinfo->si_type = PERLSI_MAIN;	395	PL_curstackinfo->si_type = PERLSI_MAIN;
445	PL_curstack = PL_curstackinfo->si_stack;	396	PL_curstack = PL_curstackinfo->si_stack;
446	PL_mainstack = PL_curstack; /* remember in case we switch stacks */	397	PL_mainstack = PL_curstack; /* remember in case we switch stacks */
447		398
448	PL_stack_base = AvARRAY(PL_curstack);	399	PL_stack_base = AvARRAY(PL_curstack);
449	PL_stack_sp = PL_stack_base;	400	PL_stack_sp = PL_stack_base;
450	PL_stack_max = PL_stack_base + AvMAX(PL_curstack);	401	PL_stack_max = PL_stack_base + AvMAX(PL_curstack);
451		402
452	New(50,PL_tmps_stack,96,SV*);	403	New(50,PL_tmps_stack,128,SV*);
453	PL_tmps_floor = -1;	404	PL_tmps_floor = -1;
454	PL_tmps_ix = -1;	405	PL_tmps_ix = -1;
455	PL_tmps_max = 96;	406	PL_tmps_max = 128;
456		407
457	New(54,PL_markstack,16,I32);	408	New(54,PL_markstack,32,I32);
458	PL_markstack_ptr = PL_markstack;	409	PL_markstack_ptr = PL_markstack;
459	PL_markstack_max = PL_markstack + 16;	410	PL_markstack_max = PL_markstack + 32;
460		411
461	#ifdef SET_MARK_OFFSET	412	#ifdef SET_MARK_OFFSET
462	SET_MARK_OFFSET;	413	SET_MARK_OFFSET;
463	#endif	414	#endif
464		415
465	New(54,PL_scopestack,16,I32);	416	New(54,PL_scopestack,32,I32);
466	PL_scopestack_ix = 0;	417	PL_scopestack_ix = 0;
467	PL_scopestack_max = 16;	418	PL_scopestack_max = 32;
468		419
469	New(54,PL_savestack,96,ANY);	420	New(54,PL_savestack,64,ANY);
470	PL_savestack_ix = 0;	421	PL_savestack_ix = 0;
471	PL_savestack_max = 96;	422	PL_savestack_max = 64;
472		423
473	#if PERL_VERSION < 9	424	#if !PERL_VERSION_ATLEAST (5,9,0)
474	New(54,PL_retstack,8,OP*);	425	New(54,PL_retstack,16,OP*);
475	PL_retstack_ix = 0;	426	PL_retstack_ix = 0;
476	PL_retstack_max = 8;	427	PL_retstack_max = 16;
477	#endif	428	#endif
478
479	UNLOCK;
480	}	429	}
481		430
482	/*	431	/*
483	* destroy the stacks, the callchain etc...	432	* destroy the stacks, the callchain etc...
484	*/	433	*/
485	static void	434	static void
486	destroy_stacks()	435	coro_destroy_stacks ()
487	{	436	{
488	if (!IN_DESTRUCT)	437	if (!IN_DESTRUCT)
489	{	438	{
490	/* is this ugly, I ask? */	439	/* is this ugly, I ask? */
491	LEAVE_SCOPE (0);	440	LEAVE_SCOPE (0);
…		…
522		471
523	Safefree (PL_tmps_stack);	472	Safefree (PL_tmps_stack);
524	Safefree (PL_markstack);	473	Safefree (PL_markstack);
525	Safefree (PL_scopestack);	474	Safefree (PL_scopestack);
526	Safefree (PL_savestack);	475	Safefree (PL_savestack);
527	#if PERL_VERSION < 9	476	#if !PERL_VERSION_ATLEAST (5,9,0)
528	Safefree (PL_retstack);	477	Safefree (PL_retstack);
529	#endif	478	#endif
530	}	479	}
531		480
532	static void	481	static void
533	setup_coro (struct coro *coro)	482	setup_coro (struct coro *coro)
534	{	483	{
535	/*	484	/*
536	* emulate part of the perl startup here.	485	* emulate part of the perl startup here.
537	*/	486	*/
538	dTHX;
539	dSP;
540	UNOP myop;
541	SV sub_init = (SV )get_cv ("Coro::State::coro_init", FALSE);
542		487
543	coro_init_stacks ();	488	coro_init_stacks ();
		489
544	/PL_curcop = 0;/	490	PL_curcop = 0;
545	/PL_in_eval = PL_in_eval;/ /* inherit */	491	PL_in_eval = 0;
		492	PL_curpm = 0;
		493
		494	{
		495	dSP;
		496	LOGOP myop;
		497
		498	/* I have no idea why this is needed, but it is */
		499	PUSHMARK (SP);
		500
546	SvREFCNT_dec (GvAV (PL_defgv));	501	SvREFCNT_dec (GvAV (PL_defgv));
547	GvAV (PL_defgv) = coro->args; coro->args = 0;	502	GvAV (PL_defgv) = coro->args; coro->args = 0;
548		503
549	SPAGAIN;
550
551	Zero (&myop, 1, UNOP);	504	Zero (&myop, 1, LOGOP);
552	myop.op_next = Nullop;	505	myop.op_next = Nullop;
553	myop.op_flags = OPf_WANT_VOID;	506	myop.op_flags = OPf_WANT_VOID;
554		507
555	PL_op = (OP *)&myop;	508	PL_op = (OP *)&myop;
556		509
557	PUSHMARK(SP);	510	PUSHMARK (SP);
558	XPUSHs (sub_init);	511	XPUSHs ((SV *)get_cv ("Coro::State::_coro_init", FALSE));
559	PUTBACK;	512	PUTBACK;
560	PL_op = PL_ppaddr[OP_ENTERSUB](aTHX);	513	PL_op = PL_ppaddr[OP_ENTERSUB](aTHX);
561	SPAGAIN;	514	SPAGAIN;
562		515
563	ENTER; /* necessary e.g. for dounwind */	516	ENTER; /* necessary e.g. for dounwind */
		517	}
564	}	518	}
565		519
566	static void	520	static void
567	free_coro_mortal ()	521	free_coro_mortal ()
568	{	522	{
…		…
571	SvREFCNT_dec (coro_mortal);	525	SvREFCNT_dec (coro_mortal);
572	coro_mortal = 0;	526	coro_mortal = 0;
573	}	527	}
574	}	528	}
575		529
		530	static void NOINLINE
		531	prepare_cctx (coro_cctx *cctx)
		532	{
		533	dSP;
		534	LOGOP myop;
		535
		536	Zero (&myop, 1, LOGOP);
		537	myop.op_next = PL_op;
		538	myop.op_flags = OPf_WANT_VOID;
		539
		540	sv_setiv (get_sv ("Coro::State::_cctx", FALSE), PTR2IV (cctx));
		541
		542	PUSHMARK (SP);
		543	XPUSHs ((SV *)get_cv ("Coro::State::_cctx_init", FALSE));
		544	PUTBACK;
		545	PL_restartop = PL_ppaddr[OP_ENTERSUB](aTHX);
		546	SPAGAIN;
		547	}
		548
576	static void	549	static void
577	coro_run (void *arg)	550	coro_run (void *arg)
578	{	551	{
		552	/* coro_run is the alternative epilogue of transfer() */
		553	UNLOCK;
		554
579	/*	555	/*
580	* this is a _very_ stripped down perl interpreter ;)	556	* this is a _very_ stripped down perl interpreter ;)
581	*/	557	*/
582	dTHX;
583	int ret;
584
585	UNLOCK;
586
587	PL_top_env = &PL_start_env;	558	PL_top_env = &PL_start_env;
588		559
589	sv_setiv (get_sv ("Coro::State::cctx_stack", FALSE), PTR2IV ((coro_stack *)arg));	560	/* inject call to cctx_init */
590	sv_setiv (get_sv ("Coro::State::cctx_restartop", FALSE), PTR2IV (PL_op));	561	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		562
595	/* somebody will hit me for both perl_run and PL_restartop */	563	/* somebody will hit me for both perl_run and PL_restartop */
596	ret = perl_run (PERL_GET_CONTEXT);	564	perl_run (PL_curinterp);
597	printf ("ret %d\n", ret);//D
598		565
599	fputs ("FATAL: C coroutine fell over the edge of the world, aborting.\n", stderr);	566	fputs ("FATAL: C coroutine fell over the edge of the world, aborting. Did you call exit in a coroutine?\n", stderr);
600	abort ();	567	abort ();
601	}	568	}
602		569
603	static coro_stack *	570	static coro_cctx *
604	stack_new ()	571	cctx_new ()
605	{	572	{
606	coro_stack *stack;	573	coro_cctx *cctx;
607		574
		575	++cctx_count;
		576
608	New (0, stack, 1, coro_stack);	577	New (0, cctx, 1, coro_cctx);
609		578
610	#if HAVE_MMAP	579	#if HAVE_MMAP
611		580
612	stack->ssize = ((STACKSIZE * sizeof (long) + PAGESIZE - 1) / PAGESIZE + STACKGUARD) * PAGESIZE;	581	cctx->ssize = ((STACKSIZE * sizeof (long) + PAGESIZE - 1) / PAGESIZE + STACKGUARD) * PAGESIZE;
613	/* mmap suppsedly does allocate-on-write for us */	582	/* 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);	583	cctx->sptr = mmap (0, cctx->ssize, PROT_EXEC\|PROT_READ\|PROT_WRITE, MAP_PRIVATE\|MAP_ANONYMOUS, 0, 0);
615		584
616	if (stack->sptr == (void *)-1)	585	if (cctx->sptr == (void *)-1)
617	{	586	{
618	perror ("FATAL: unable to mmap stack for coroutine");	587	perror ("FATAL: unable to mmap stack for coroutine");
619	_exit (EXIT_FAILURE);	588	_exit (EXIT_FAILURE);
620	}	589	}
621		590
622	# if STACKGUARD	591	# if STACKGUARD
623	mprotect (stack->sptr, STACKGUARD * PAGESIZE, PROT_NONE);	592	mprotect (cctx->sptr, STACKGUARD * PAGESIZE, PROT_NONE);
624	# endif	593	# endif
625		594
626	#else	595	#else
627		596
628	stack->ssize = STACKSIZE * (long)sizeof (long);	597	cctx->ssize = STACKSIZE * (long)sizeof (long);
629	New (0, stack->sptr, STACKSIZE, long);	598	New (0, cctx->sptr, STACKSIZE, long);
630		599
631	if (!stack->sptr)	600	if (!cctx->sptr)
632	{	601	{
633	perror (stderr, "FATAL: unable to malloc stack for coroutine");	602	perror ("FATAL: unable to malloc stack for coroutine");
634	_exit (EXIT_FAILURE);	603	_exit (EXIT_FAILURE);
635	}	604	}
636		605
637	#endif	606	#endif
638		607
		608	#if USE_VALGRIND
		609	cctx->valgrind_id = VALGRIND_STACK_REGISTER (
		610	STACKGUARD * PAGESIZE + (char *)cctx->sptr,
		611	cctx->ssize + (char *)cctx->sptr
		612	);
		613	#endif
		614
639	coro_create (&stack->cctx, coro_run, (void *)stack, stack->sptr, stack->ssize);	615	coro_create (&cctx->cctx, coro_run, (void *)cctx, cctx->sptr, cctx->ssize);
640		616
641	return stack;	617	return cctx;
642	}	618	}
643		619
644	static void	620	static void
645	stack_free (coro_stack *stack)	621	cctx_destroy (coro_cctx *cctx)
646	{	622	{
647	if (!stack)	623	if (!cctx)
648	return;	624	return;
649		625
		626	--cctx_count;
		627
		628	#if USE_VALGRIND
		629	VALGRIND_STACK_DEREGISTER (cctx->valgrind_id);
		630	#endif
		631
650	#if HAVE_MMAP	632	#if HAVE_MMAP
651	munmap (stack->sptr, stack->ssize);	633	munmap (cctx->sptr, cctx->ssize);
652	#else	634	#else
653	Safefree (stack->sptr);	635	Safefree (cctx->sptr);
654	#endif	636	#endif
655		637
656	Safefree (stack);	638	Safefree (cctx);
657	}	639	}
658		640
659	static coro_stack *stack_first;
660
661	static coro_stack *	641	static coro_cctx *
662	stack_get ()	642	cctx_get ()
663	{	643	{
664	coro_stack *stack;	644	coro_cctx *cctx;
665		645
666	if (stack_first)	646	if (cctx_first)
667	{	647	{
668	stack = stack_first;	648	cctx = cctx_first;
669	stack_first = stack->next;	649	cctx_first = cctx->next;
		650	--cctx_idle;
670	}	651	}
671	else	652	else
672	{	653	{
673	stack = stack_new ();	654	cctx = cctx_new ();
674	PL_op = PL_op->op_next;	655	PL_op = PL_op->op_next;
675	}	656	}
676		657
677	return stack;	658	return cctx;
678	}	659	}
679		660
680	static void	661	static void
681	stack_put (coro_stack *stack)	662	cctx_put (coro_cctx *cctx)
682	{	663	{
683	stack->next = stack_first;	664	/* free another cctx if overlimit */
684	stack_first = stack;	665	if (cctx_idle >= MAX_IDLE_CCTX)
		666	{
		667	coro_cctx *first = cctx_first;
		668	cctx_first = first->next;
		669	--cctx_idle;
		670
		671	assert (!first->inuse);
		672	cctx_destroy (first);
		673	}
		674
		675	++cctx_idle;
		676	cctx->next = cctx_first;
		677	cctx_first = cctx;
685	}	678	}
686		679
687	/* never call directly, always through the coro_state_transfer global variable */	680	/* never call directly, always through the coro_state_transfer global variable */
688	static void	681	static void NOINLINE
689	transfer_impl (struct coro prev, struct coro next, int flags)	682	transfer (struct coro prev, struct coro next, int flags)
690	{	683	{
691	dSTACKLEVEL;	684	dSTACKLEVEL;
692		685
693	/* sometimes transfer is only called to set idle_sp */	686	/* sometimes transfer is only called to set idle_sp */
694	if (flags == TRANSFER_SET_STACKLEVEL)	687	if (flags == TRANSFER_SET_STACKLEVEL)
695	((coro_stack *)prev)->idle_sp = STACKLEVEL;	688	((coro_cctx *)prev)->idle_sp = STACKLEVEL;
696	else if (prev != next)	689	else if (prev != next)
697	{	690	{
698	coro_stack *prev__stack;	691	coro_cctx *prev__cctx;
		692
		693	if (!prev->cctx)
		694	{
		695	/* create a new empty context */
		696	Newz (0, prev->cctx, 1, coro_cctx);
		697	prev->cctx->inuse = 1;
		698	prev->flags \|= CF_RUNNING;
		699	}
		700
		701	if (!prev->flags & CF_RUNNING)
		702	croak ("Coro::State::transfer called with non-running prev Coro::State, but can only transfer from running states");
		703
		704	if (next->flags & CF_RUNNING)
		705	croak ("Coro::State::transfer called with running next Coro::State, but can only transfer to inactive states");
		706
		707	prev->flags &= ~CF_RUNNING;
		708	next->flags \|= CF_RUNNING;
699		709
700	LOCK;	710	LOCK;
701		711
702	if (next->mainstack)	712	if (next->mainstack)
703	{	713	{
…		…
710	/* need to start coroutine */	720	/* need to start coroutine */
711	/* first get rid of the old state */	721	/* first get rid of the old state */
712	SAVE (prev, -1);	722	SAVE (prev, -1);
713	/* setup coroutine call */	723	/* setup coroutine call */
714	setup_coro (next);	724	setup_coro (next);
715	/* need a stack */	725	/* need a new stack */
716	next->stack = 0;	726	assert (!next->stack);
717	}	727	}
718		728
719	if (!prev->stack)
720	/* create a new empty context */
721	Newz (0, prev->stack, 1, coro_stack);
722
723	prev__stack = prev->stack;	729	prev__cctx = prev->cctx;
724		730
725	/* possibly "free" the stack */	731	/* possibly "free" the cctx */
726	if (prev__stack->idle_sp == STACKLEVEL)	732	if (prev__cctx->idle_sp == STACKLEVEL)
727	{	733	{
		734	/* I assume that STACKLEVEL is a stronger indicator than PL_top_env changes */
		735	assert (PL_top_env == prev__cctx->top_env);
		736
728	stack_put (prev__stack);	737	cctx_put (prev__cctx);
729	prev->stack = 0;	738	prev->cctx = 0;
730	}	739	}
731		740
732	if (!next->stack)	741	if (!next->cctx)
733	next->stack = stack_get ();	742	next->cctx = cctx_get ();
734		743
735	if (prev__stack != next->stack)	744	if (prev__cctx != next->cctx)
736	{	745	{
		746	assert ( prev__cctx->inuse);
		747	assert (!next->cctx->inuse);
		748
		749	prev__cctx->inuse = 0;
		750	next->cctx->inuse = 1;
		751
737	prev__stack->top_env = PL_top_env;	752	prev__cctx->top_env = PL_top_env;
738	PL_top_env = next->stack->top_env;	753	PL_top_env = next->cctx->top_env;
739	coro_transfer (&prev__stack->cctx, &next->stack->cctx);	754	coro_transfer (&prev__cctx->cctx, &next->cctx->cctx);
740	}	755	}
741		756
742	free_coro_mortal ();	757	free_coro_mortal ();
743		758
744	UNLOCK;	759	UNLOCK;
745	}	760	}
746	}	761	}
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		762
753	struct transfer_args	763	struct transfer_args
754	{	764	{
755	struct coro prev, next;	765	struct coro prev, next;
756	int flags;	766	int flags;
757	};	767	};
758		768
759	#define TRANSFER(ta) coro_state_transfer ((ta).prev, (ta).next, (ta).flags)	769	#define TRANSFER(ta) transfer ((ta).prev, (ta).next, (ta).flags)
760		770
761	static void	771	static void
762	coro_state_destroy (struct coro *coro)	772	coro_state_destroy (struct coro *coro)
763	{	773	{
764	if (coro->refcnt--)	774	if (coro->refcnt--)
765	return;	775	return;
		776
		777	if (coro->flags & CF_RUNNING)
		778	croak ("FATAL: tried to destroy currently running coroutine");
766		779
767	if (coro->mainstack && coro->mainstack != main_mainstack)	780	if (coro->mainstack && coro->mainstack != main_mainstack)
768	{	781	{
769	struct coro temp;	782	struct coro temp;
770		783
771	SAVE ((&temp), TRANSFER_SAVE_ALL);	784	SAVE ((&temp), TRANSFER_SAVE_ALL);
772	LOAD (coro);	785	LOAD (coro);
773		786
774	destroy_stacks ();	787	coro_destroy_stacks ();
775		788
776	LOAD ((&temp)); /* this will get rid of defsv etc.. */	789	LOAD ((&temp)); /* this will get rid of defsv etc.. */
777		790
778	coro->mainstack = 0;	791	coro->mainstack = 0;
779	}	792	}
780		793
781	stack_free (coro->stack);	794	cctx_destroy (coro->cctx);
782	SvREFCNT_dec (coro->args);	795	SvREFCNT_dec (coro->args);
783	Safefree (coro);	796	Safefree (coro);
784	}	797	}
785		798
786	static int	799	static int
…		…
802	++coro->refcnt;	815	++coro->refcnt;
803		816
804	return 0;	817	return 0;
805	}	818	}
806		819
807	static MGVTBL coro_state_vtbl = { 0, 0, 0, 0, coro_state_clear, 0, coro_state_dup, 0 };	820	static MGVTBL coro_state_vtbl = {
		821	0, 0, 0, 0,
		822	coro_state_clear,
		823	0,
		824	#ifdef MGf_DUP
		825	coro_state_dup,
		826	#else
		827	# define MGf_DUP 0
		828	#endif
		829	};
808		830
809	static struct coro *	831	static struct coro *
810	SvSTATE (SV *coro)	832	SvSTATE (SV *coro)
811	{	833	{
812	HV *stash;	834	HV *stash;
…		…
859	static GV coro_current, coro_idle;	881	static GV coro_current, coro_idle;
860	static AV *coro_ready [PRIO_MAX-PRIO_MIN+1];	882	static AV *coro_ready [PRIO_MAX-PRIO_MIN+1];
861	static int coro_nready;	883	static int coro_nready;
862		884
863	static void	885	static void
864	coro_enq (SV *sv)	886	coro_enq (SV *coro_sv)
865	{	887	{
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);	888	av_push (coro_ready [SvSTATE (coro_sv)->prio - PRIO_MIN], coro_sv);
874	coro_nready++;	889	coro_nready++;
875	}	890	}
876		891
877	static SV *	892	static SV *
878	coro_deq (int min_prio)	893	coro_deq (int min_prio)
…		…
891	}	906	}
892		907
893	return 0;	908	return 0;
894	}	909	}
895		910
896	static void	911	static int
897	api_ready (SV *coro)	912	api_ready (SV *coro_sv)
898	{	913	{
899	dTHX;	914	struct coro *coro;
900		915
901	if (SvROK (coro))	916	if (SvROK (coro_sv))
902	coro = SvRV (coro);	917	coro_sv = SvRV (coro_sv);
		918
		919	coro = SvSTATE (coro_sv);
		920
		921	if (coro->flags & CF_READY)
		922	return 0;
		923
		924	if (coro->flags & CF_RUNNING)
		925	croak ("Coro::ready called on currently running coroutine");
		926
		927	coro->flags \|= CF_READY;
903		928
904	LOCK;	929	LOCK;
905	coro_enq (SvREFCNT_inc (coro));	930	coro_enq (SvREFCNT_inc (coro_sv));
906	UNLOCK;	931	UNLOCK;
		932
		933	return 1;
		934	}
		935
		936	static int
		937	api_is_ready (SV *coro_sv)
		938	{
		939	return !!SvSTATE (coro_sv)->flags & CF_READY;
907	}	940	}
908		941
909	static void	942	static void
910	prepare_schedule (struct transfer_args *ta)	943	prepare_schedule (struct transfer_args *ta)
911	{	944	{
912	SV current, prev, *next;	945	SV current, prev, *next;
913
914	LOCK;
915		946
916	current = GvSV (coro_current);	947	current = GvSV (coro_current);
917		948
918	for (;;)	949	for (;;)
919	{	950	{
920	LOCK;	951	LOCK;
921
922	next = coro_deq (PRIO_MIN);	952	next = coro_deq (PRIO_MIN);
		953	UNLOCK;
923		954
924	if (next)	955	if (next)
925	break;	956	break;
926
927	UNLOCK;
928		957
929	{	958	{
930	dSP;	959	dSP;
931		960
932	ENTER;	961	ENTER;
…		…
943		972
944	prev = SvRV (current);	973	prev = SvRV (current);
945	SvRV (current) = next;	974	SvRV (current) = next;
946		975
947	/* free this only after the transfer */	976	/* free this only after the transfer */
		977	LOCK;
948	free_coro_mortal ();	978	free_coro_mortal ();
		979	UNLOCK;
949	coro_mortal = prev;	980	coro_mortal = prev;
950		981
951	ta->prev = SvSTATE (prev);	982	ta->prev = SvSTATE (prev);
952	ta->next = SvSTATE (next);	983	ta->next = SvSTATE (next);
953	ta->flags = TRANSFER_SAVE_ALL;	984	ta->flags = TRANSFER_SAVE_ALL;
954		985
955	UNLOCK;	986	ta->next->flags &= ~CF_READY;
956	}	987	}
957		988
958	static void	989	static void
959	prepare_cede (struct transfer_args *ta)	990	prepare_cede (struct transfer_args *ta)
960	{	991	{
961	LOCK;	992	api_ready (GvSV (coro_current));
962	coro_enq (SvREFCNT_inc (SvRV (GvSV (coro_current))));
963	UNLOCK;
964		993
965	prepare_schedule (ta);	994	prepare_schedule (ta);
966	}	995	}
967		996
968	static void	997	static void
…		…
1025	sv_magicext ((SV )hv, 0, PERL_MAGIC_ext, &coro_state_vtbl, (char )coro, 0)->mg_flags \|= MGf_DUP;	1054	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));	1055	RETVAL = sv_bless (newRV_noinc ((SV *)hv), gv_stashpv (klass, 1));
1027		1056
1028	for (i = 1; i < items; i++)	1057	for (i = 1; i < items; i++)
1029	av_push (coro->args, newSVsv (ST (i)));	1058	av_push (coro->args, newSVsv (ST (i)));
1030
1031	/coro->mainstack = 0; //actual work is done inside transfer /
1032	/coro->stack = 0;/
1033	}	1059	}
1034	OUTPUT:	1060	OUTPUT:
1035	RETVAL	1061	RETVAL
1036		1062
1037	void	1063	void
…		…
1046	struct transfer_args ta;	1072	struct transfer_args ta;
1047		1073
1048	switch (ix)	1074	switch (ix)
1049	{	1075	{
1050	case 0:	1076	case 0:
1051	ta.prev = (struct coro )INT2PTR (coro_stack , SvIV (ST (0)));	1077	ta.prev = (struct coro )INT2PTR (coro_cctx , SvIV (ST (0)));
1052	ta.next = 0;	1078	ta.next = 0;
1053	ta.flags = TRANSFER_SET_STACKLEVEL;	1079	ta.flags = TRANSFER_SET_STACKLEVEL;
1054	break;	1080	break;
1055		1081
1056	case 1:	1082	case 1:
…		…
1110	++coro_src->refcnt;	1136	++coro_src->refcnt;
1111	sv_magicext (SvRV (dst), 0, PERL_MAGIC_ext, &coro_state_vtbl, (char *)coro_src, 0)->mg_flags \|= MGf_DUP;	1137	sv_magicext (SvRV (dst), 0, PERL_MAGIC_ext, &coro_state_vtbl, (char *)coro_src, 0)->mg_flags \|= MGf_DUP;
1112	}	1138	}
1113		1139
1114	void	1140	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)	1141	_exit (code)
1122	int code	1142	int code
1123	PROTOTYPE: $	1143	PROTOTYPE: $
1124	CODE:	1144	CODE:
1125	_exit (code);	1145	_exit (code);
		1146
		1147	int
		1148	cctx_count ()
		1149	CODE:
		1150	RETVAL = cctx_count;
		1151	OUTPUT:
		1152	RETVAL
		1153
		1154	int
		1155	cctx_idle ()
		1156	CODE:
		1157	RETVAL = cctx_idle;
		1158	OUTPUT:
		1159	RETVAL
1126		1160
1127	MODULE = Coro::State PACKAGE = Coro	1161	MODULE = Coro::State PACKAGE = Coro
1128		1162
1129	BOOT:	1163	BOOT:
1130	{	1164	{
…		…
1149	SV *sv = perl_get_sv("Coro::API", 1);	1183	SV *sv = perl_get_sv("Coro::API", 1);
1150		1184
1151	coroapi.schedule = api_schedule;	1185	coroapi.schedule = api_schedule;
1152	coroapi.cede = api_cede;	1186	coroapi.cede = api_cede;
1153	coroapi.ready = api_ready;	1187	coroapi.ready = api_ready;
		1188	coroapi.is_ready = api_is_ready;
1154	coroapi.nready = &coro_nready;	1189	coroapi.nready = &coro_nready;
1155	coroapi.current = coro_current;	1190	coroapi.current = coro_current;
1156		1191
1157	GCoroAPI = &coroapi;	1192	GCoroAPI = &coroapi;
1158	sv_setiv (sv, (IV)&coroapi);	1193	sv_setiv (sv, (IV)&coroapi);
…		…
1178		1213
1179	coro->prio = newprio;	1214	coro->prio = newprio;
1180	}	1215	}
1181	}	1216	}
1182		1217
1183	void	1218	SV *
1184	ready (SV *self)	1219	ready (SV *self)
1185	PROTOTYPE: $	1220	PROTOTYPE: $
1186	CODE:	1221	CODE:
1187	api_ready (self);	1222	RETVAL = boolSV (api_ready (self));
		1223	OUTPUT:
		1224	RETVAL
		1225
		1226	SV *
		1227	is_ready (SV *self)
		1228	PROTOTYPE: $
		1229	CODE:
		1230	RETVAL = boolSV (api_is_ready (self));
		1231	OUTPUT:
		1232	RETVAL
1188		1233
1189	int	1234	int
1190	nready (...)	1235	nready (...)
1191	PROTOTYPE:	1236	PROTOTYPE:
1192	CODE:	1237	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 1.116 by root, Fri Dec 1 14:01:43 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 1.116 by root, Fri Dec 1 14:01:43 2006 UTC