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

Comparing Coro/Coro/State.xs (file contents):
Revision 1.99 by root, Sun Nov 26 23:53:20 2006 UTC vs.
Revision 1.122 by root, Mon Dec 4 13:47:56 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)
68		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))
		92
69	#include "CoroAPI.h"	93	#include "CoroAPI.h"
70
71	#define TRANSFER_SET_STACKLEVEL 0x8bfbfbfb /* magic cookie */
72		94
73	#ifdef USE_ITHREADS	95	#ifdef USE_ITHREADS
74	static perl_mutex coro_mutex;	96	static perl_mutex coro_mutex;
75	# define LOCK do { MUTEX_LOCK (&coro_mutex); } while (0)	97	# define LOCK do { MUTEX_LOCK (&coro_mutex); } while (0)
76	# define UNLOCK do { MUTEX_UNLOCK (&coro_mutex); } while (0)	98	# define UNLOCK do { MUTEX_UNLOCK (&coro_mutex); } while (0)
77	#else	99	#else
78	# define LOCK (void)0	100	# define LOCK (void)0
79	# define UNLOCK (void)0	101	# define UNLOCK (void)0
80	#endif	102	#endif
81		103
		104	struct io_state
		105	{
		106	int errorno;
		107	I32 laststype;
		108	int laststatval;
		109	Stat_t statcache;
		110	};
		111
82	static struct CoroAPI coroapi;	112	static struct CoroAPI coroapi;
83	static AV main_mainstack; / used to differentiate between $main and others */	113	static AV main_mainstack; / used to differentiate between $main and others */
84	static HV coro_state_stash, coro_stash;	114	static HV coro_state_stash, coro_stash;
85	static SV coro_mortal; / will be freed after next transfer */	115	static SV coro_mortal; / will be freed after next transfer */
86		116
		117	static struct coro_cctx *cctx_first;
		118	static int cctx_count, cctx_idle;
		119
87	/* this is a structure representing a c-level coroutine */	120	/* this is a structure representing a c-level coroutine */
88	typedef struct coro_stack {	121	typedef struct coro_cctx {
89	struct coro_stack *next;	122	struct coro_cctx *next;
90		123
91	/* the stack */	124	/* the stack */
92	void *sptr;	125	void *sptr;
93	long ssize; /* positive == mmap, otherwise malloc */	126	long ssize; /* positive == mmap, otherwise malloc */
94		127
95	/* cpu state */	128	/* cpu state */
96	void idle_sp; / sp of top-level transfer/schedule/cede call */	129	void idle_sp; / sp of top-level transfer/schedule/cede call */
97	JMPENV *top_env;	130	JMPENV *top_env;
98	coro_context cctx;	131	coro_context cctx;
99	} coro_stack;	132
		133	int inuse;
		134
		135	#if USE_VALGRIND
		136	int valgrind_id;
		137	#endif
		138	} coro_cctx;
		139
		140	enum {
		141	CF_RUNNING = 0x0001, /* coroutine is running */
		142	CF_READY = 0x0002, /* coroutine is ready */
		143	CF_NEW = 0x0004, /* ahs never been switched to */
		144	};
100		145
101	/* this is a structure representing a perl-level coroutine */	146	/* this is a structure representing a perl-level coroutine */
102	struct coro {	147	struct coro {
103	/* the c coroutine allocated to this perl coroutine, if any */	148	/* the c coroutine allocated to this perl coroutine, if any */
104	coro_stack *stack;	149	coro_cctx *cctx;
105		150
106	/* data associated with this coroutine (initial args) */	151	/* data associated with this coroutine (initial args) */
107	AV *args;	152	AV *args;
108	int refcnt;	153	int refcnt;
		154	int save; /* CORO_SAVE flags */
		155	int flags; /* CF_ flags */
109		156
110	/* optionally saved, might be zero */	157	/* optionally saved, might be zero */
111	AV *defav;	158	AV defav; / @_ */
112	SV *defsv;	159	SV defsv; / $_ */
113	SV *errsv;	160	SV errsv; / $@ */
		161	SV irssv; / $/ */
114		162
115	/* saved global state not related to stacks */	163	#define VAR(name,type) type name;
116	U8 dowarn;	164	# include "state.h"
117	I32 in_eval;	165	#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		166
149	/* coro process data */	167	/* coro process data */
150	int prio;	168	int prio;
151	};	169	};
152		170
…		…
159	AV *padlist = CvPADLIST (cv);	177	AV *padlist = CvPADLIST (cv);
160	AV newpadlist, newpad;	178	AV newpadlist, newpad;
161		179
162	newpadlist = newAV ();	180	newpadlist = newAV ();
163	AvREAL_off (newpadlist);	181	AvREAL_off (newpadlist);
164	#if PERL_VERSION < 9	182	#if PERL_VERSION_ATLEAST (5,9,0)
		183	Perl_pad_push (aTHX_ padlist, AvFILLp (padlist) + 1);
		184	#else
165	Perl_pad_push (aTHX_ padlist, AvFILLp (padlist) + 1, 1);	185	Perl_pad_push (aTHX_ padlist, AvFILLp (padlist) + 1, 1);
166	#else
167	Perl_pad_push (aTHX_ padlist, AvFILLp (padlist) + 1);
168	#endif	186	#endif
169	newpad = (AV *)AvARRAY (padlist)[AvFILLp (padlist)];	187	newpad = (AV *)AvARRAY (padlist)[AvFILLp (padlist)];
170	--AvFILLp (padlist);	188	--AvFILLp (padlist);
171		189
172	av_store (newpadlist, 0, SvREFCNT_inc (*av_fetch (padlist, 0, FALSE)));	190	av_store (newpadlist, 0, SvREFCNT_inc (*av_fetch (padlist, 0, FALSE)));
…		…
216		234
217	#define PERL_MAGIC_coro PERL_MAGIC_ext	235	#define PERL_MAGIC_coro PERL_MAGIC_ext
218		236
219	static MGVTBL vtbl_coro = {0, 0, 0, 0, coro_cv_free};	237	static MGVTBL vtbl_coro = {0, 0, 0, 0, coro_cv_free};
220		238
		239	#define CORO_MAGIC(cv) \
		240	SvMAGIC (cv) \
		241	? SvMAGIC (cv)->mg_type == PERL_MAGIC_coro \
		242	? SvMAGIC (cv) \
		243	: mg_find ((SV *)cv, PERL_MAGIC_coro) \
		244	: 0
		245
221	/* the next two functions merely cache the padlists */	246	/* the next two functions merely cache the padlists */
222	static void	247	static void
223	get_padlist (CV *cv)	248	get_padlist (CV *cv)
224	{	249	{
225	MAGIC mg = mg_find ((SV )cv, PERL_MAGIC_coro);	250	MAGIC *mg = CORO_MAGIC (cv);
		251	AV *av;
226		252
227	if (mg && AvFILLp ((AV *)mg->mg_obj) >= 0)	253	if (mg && AvFILLp ((av = (AV *)mg->mg_obj)) >= 0)
228	CvPADLIST (cv) = (AV )av_pop ((AV )mg->mg_obj);	254	CvPADLIST (cv) = (AV *)AvARRAY (av)[AvFILLp (av)--];
229	else	255	else
230	{	256	{
231	#if 0	257	#if 0
232	/* this is probably cleaner, but also slower? */	258	/* this is probably cleaner, but also slower? */
233	CV *cp = Perl_cv_clone (cv);	259	CV *cp = Perl_cv_clone (cv);
…		…
241	}	267	}
242		268
243	static void	269	static void
244	put_padlist (CV *cv)	270	put_padlist (CV *cv)
245	{	271	{
246	MAGIC mg = mg_find ((SV )cv, PERL_MAGIC_coro);	272	MAGIC *mg = CORO_MAGIC (cv);
		273	AV *av;
247		274
248	if (!mg)	275	if (!mg)
249	{	276	{
250	sv_magic ((SV *)cv, 0, PERL_MAGIC_coro, 0, 0);	277	sv_magic ((SV *)cv, 0, PERL_MAGIC_coro, 0, 0);
251	mg = mg_find ((SV *)cv, PERL_MAGIC_coro);	278	mg = mg_find ((SV *)cv, PERL_MAGIC_coro);
252	mg->mg_virtual = &vtbl_coro;	279	mg->mg_virtual = &vtbl_coro;
253	mg->mg_obj = (SV *)newAV ();	280	mg->mg_obj = (SV *)newAV ();
254	}	281	}
255		282
256	av_push ((AV )mg->mg_obj, (SV )CvPADLIST (cv));	283	av = (AV *)mg->mg_obj;
		284
		285	if (AvFILLp (av) >= AvMAX (av))
		286	av_extend (av, AvMAX (av) + 1);
		287
		288	AvARRAY (av)[++AvFILLp (av)] = (SV *)CvPADLIST (cv);
257	}	289	}
258		290
259	#define SB do {	291	#define SB do {
260	#define SE } while (0)	292	#define SE } while (0)
261		293
262	#define LOAD(state) load_state((state));
263	#define SAVE(state,flags) save_state((state),(flags));
264
265	#define REPLACE_SV(sv,val) SB SvREFCNT_dec(sv); (sv) = (val); (val) = 0; SE	294	#define REPLACE_SV(sv,val) SB SvREFCNT_dec (sv); (sv) = (val); (val) = 0; SE
266		295
267	static void	296	static void
268	load_state(Coro__State c)	297	load_perl (Coro__State c)
269	{	298	{
270	PL_dowarn = c->dowarn;	299	#define VAR(name,type) PL_ ## name = c->name;
271	PL_in_eval = c->in_eval;	300	# include "state.h"
272		301	#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		302
304	if (c->defav) REPLACE_SV (GvAV (PL_defgv), c->defav);	303	if (c->defav) REPLACE_SV (GvAV (PL_defgv), c->defav);
305	if (c->defsv) REPLACE_SV (DEFSV , c->defsv);	304	if (c->defsv) REPLACE_SV (DEFSV , c->defsv);
306	if (c->errsv) REPLACE_SV (ERRSV , c->errsv);	305	if (c->errsv) REPLACE_SV (ERRSV , c->errsv);
		306	if (c->irssv) REPLACE_SV (PL_rs , c->irssv);
307		307
308	{	308	{
309	dSP;	309	dSP;
310	CV *cv;	310	CV *cv;
311		311
312	/* now do the ugly restore mess */	312	/* now do the ugly restore mess */
313	while ((cv = (CV *)POPs))	313	while ((cv = (CV *)POPs))
314	{	314	{
315	AV padlist = (AV )POPs;
316
317	if (padlist)
318	{
319	put_padlist (cv); /* mark this padlist as available */	315	put_padlist (cv); /* mark this padlist as available */
320	CvPADLIST(cv) = padlist;	316	CvDEPTH (cv) = PTR2IV (POPs);
321	}	317	CvPADLIST (cv) = (AV *)POPs;
322
323	++CvDEPTH(cv);
324	}	318	}
325		319
326	PUTBACK;	320	PUTBACK;
327	}	321	}
328	}	322	}
329		323
330	static void	324	static void
331	save_state(Coro__State c, int flags)	325	save_perl (Coro__State c)
332	{	326	{
333	{	327	{
334	dSP;	328	dSP;
335	I32 cxix = cxstack_ix;	329	I32 cxix = cxstack_ix;
336	PERL_CONTEXT *ccstk = cxstack;	330	PERL_CONTEXT *ccstk = cxstack;
…		…
347	{	341	{
348	while (cxix >= 0)	342	while (cxix >= 0)
349	{	343	{
350	PERL_CONTEXT *cx = &ccstk[cxix--];	344	PERL_CONTEXT *cx = &ccstk[cxix--];
351		345
352	if (CxTYPE(cx) == CXt_SUB)	346	if (CxTYPE (cx) == CXt_SUB)
353	{	347	{
354	CV *cv = cx->blk_sub.cv;	348	CV *cv = cx->blk_sub.cv;
		349
355	if (CvDEPTH(cv))	350	if (CvDEPTH (cv))
356	{	351	{
357	EXTEND (SP, CvDEPTH(cv)*2);	352	EXTEND (SP, 3);
358		353
359	while (--CvDEPTH(cv))
360	{
361	/* this tells the restore code to increment CvDEPTH */
362	PUSHs (Nullsv);
363	PUSHs ((SV *)cv);
364	}
365
366	PUSHs ((SV *)CvPADLIST(cv));	354	PUSHs ((SV *)CvPADLIST (cv));
		355	PUSHs (INT2PTR (SV *, CvDEPTH (cv)));
367	PUSHs ((SV *)cv);	356	PUSHs ((SV *)cv);
368		357
		358	CvDEPTH (cv) = 0;
369	get_padlist (cv);	359	get_padlist (cv);
370	}	360	}
371	}	361	}
372	#ifdef CXt_FORMAT	362	#ifdef CXt_FORMAT
373	else if (CxTYPE(cx) == CXt_FORMAT)	363	else if (CxTYPE (cx) == CXt_FORMAT)
374	{	364	{
375	/* I never used formats, so how should I know how these are implemented? */	365	/* I never used formats, so how should I know how these are implemented? */
376	/* my bold guess is as a simple, plain sub... */	366	/* my bold guess is as a simple, plain sub... */
377	croak ("CXt_FORMAT not yet handled. Don't switch coroutines from within formats");	367	croak ("CXt_FORMAT not yet handled. Don't switch coroutines from within formats");
378	}	368	}
…		…
388	}	378	}
389		379
390	PUTBACK;	380	PUTBACK;
391	}	381	}
392		382
393	c->defav = flags & TRANSFER_SAVE_DEFAV ? (AV *)SvREFCNT_inc (GvAV (PL_defgv)) : 0;	383	c->defav = c->save & CORO_SAVE_DEFAV ? (AV *)SvREFCNT_inc (GvAV (PL_defgv)) : 0;
394	c->defsv = flags & TRANSFER_SAVE_DEFSV ? SvREFCNT_inc (DEFSV) : 0;	384	c->defsv = c->save & CORO_SAVE_DEFSV ? SvREFCNT_inc (DEFSV) : 0;
395	c->errsv = flags & TRANSFER_SAVE_ERRSV ? SvREFCNT_inc (ERRSV) : 0;	385	c->errsv = c->save & CORO_SAVE_ERRSV ? SvREFCNT_inc (ERRSV) : 0;
		386	c->irssv = c->save & CORO_SAVE_IRSSV ? SvREFCNT_inc (PL_rs) : 0;
396		387
397	c->dowarn = PL_dowarn;	388	#define VAR(name,type)c->name = PL_ ## name;
398	c->in_eval = PL_in_eval;	389	# include "state.h"
399		390	#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	}	391	}
431		392
432	/*	393	/*
433	* allocate various perl stacks. This is an exact copy	394	* allocate various perl stacks. This is an exact copy
434	* of perl.c:init_stacks, except that it uses less memory	395	* of perl.c:init_stacks, except that it uses less memory
…		…
436	* not usually need a lot of stackspace.	397	* not usually need a lot of stackspace.
437	*/	398	*/
438	static void	399	static void
439	coro_init_stacks ()	400	coro_init_stacks ()
440	{	401	{
441	PL_curstackinfo = new_stackinfo(96, 1024/sizeof(PERL_CONTEXT) - 1);	402	PL_curstackinfo = new_stackinfo(128, 1024/sizeof(PERL_CONTEXT));
442	PL_curstackinfo->si_type = PERLSI_MAIN;	403	PL_curstackinfo->si_type = PERLSI_MAIN;
443	PL_curstack = PL_curstackinfo->si_stack;	404	PL_curstack = PL_curstackinfo->si_stack;
444	PL_mainstack = PL_curstack; /* remember in case we switch stacks */	405	PL_mainstack = PL_curstack; /* remember in case we switch stacks */
445		406
446	PL_stack_base = AvARRAY(PL_curstack);	407	PL_stack_base = AvARRAY(PL_curstack);
447	PL_stack_sp = PL_stack_base;	408	PL_stack_sp = PL_stack_base;
448	PL_stack_max = PL_stack_base + AvMAX(PL_curstack);	409	PL_stack_max = PL_stack_base + AvMAX(PL_curstack);
449		410
450	New(50,PL_tmps_stack,96,SV*);	411	New(50,PL_tmps_stack,128,SV*);
451	PL_tmps_floor = -1;	412	PL_tmps_floor = -1;
452	PL_tmps_ix = -1;	413	PL_tmps_ix = -1;
453	PL_tmps_max = 96;	414	PL_tmps_max = 128;
454		415
455	New(54,PL_markstack,16,I32);	416	New(54,PL_markstack,32,I32);
456	PL_markstack_ptr = PL_markstack;	417	PL_markstack_ptr = PL_markstack;
457	PL_markstack_max = PL_markstack + 16;	418	PL_markstack_max = PL_markstack + 32;
458		419
459	#ifdef SET_MARK_OFFSET	420	#ifdef SET_MARK_OFFSET
460	SET_MARK_OFFSET;	421	SET_MARK_OFFSET;
461	#endif	422	#endif
462		423
463	New(54,PL_scopestack,16,I32);	424	New(54,PL_scopestack,32,I32);
464	PL_scopestack_ix = 0;	425	PL_scopestack_ix = 0;
465	PL_scopestack_max = 16;	426	PL_scopestack_max = 32;
466		427
467	New(54,PL_savestack,96,ANY);	428	New(54,PL_savestack,64,ANY);
468	PL_savestack_ix = 0;	429	PL_savestack_ix = 0;
469	PL_savestack_max = 96;	430	PL_savestack_max = 64;
470		431
471	#if PERL_VERSION < 9	432	#if !PERL_VERSION_ATLEAST (5,9,0)
472	New(54,PL_retstack,8,OP*);	433	New(54,PL_retstack,16,OP*);
473	PL_retstack_ix = 0;	434	PL_retstack_ix = 0;
474	PL_retstack_max = 8;	435	PL_retstack_max = 16;
475	#endif	436	#endif
476	}	437	}
477		438
478	/*	439	/*
479	* destroy the stacks, the callchain etc...	440	* destroy the stacks, the callchain etc...
480	*/	441	*/
481	static void	442	static void
482	destroy_stacks()	443	coro_destroy_stacks ()
483	{	444	{
484	if (!IN_DESTRUCT)	445	if (!IN_DESTRUCT)
485	{	446	{
486	/* is this ugly, I ask? */	447	/* is this ugly, I ask? */
487	LEAVE_SCOPE (0);	448	LEAVE_SCOPE (0);
…		…
518		479
519	Safefree (PL_tmps_stack);	480	Safefree (PL_tmps_stack);
520	Safefree (PL_markstack);	481	Safefree (PL_markstack);
521	Safefree (PL_scopestack);	482	Safefree (PL_scopestack);
522	Safefree (PL_savestack);	483	Safefree (PL_savestack);
523	#if PERL_VERSION < 9	484	#if !PERL_VERSION_ATLEAST (5,9,0)
524	Safefree (PL_retstack);	485	Safefree (PL_retstack);
525	#endif	486	#endif
526	}	487	}
527		488
528	static void	489	static void
529	setup_coro (struct coro *coro)	490	setup_coro (struct coro *coro)
530	{	491	{
531	/*	492	/*
532	* emulate part of the perl startup here.	493	* emulate part of the perl startup here.
533	*/	494	*/
534	dTHX;
535	dSP;
536	UNOP myop;
537	SV sub_init = (SV )get_cv ("Coro::State::coro_init", FALSE);
538		495
539	coro_init_stacks ();	496	coro_init_stacks ();
540	/PL_curcop = 0;/	497
541	/PL_in_eval = PL_in_eval;/ /* inherit */	498	PL_curcop = &PL_compiling;
		499	PL_in_eval = EVAL_NULL;
		500	PL_curpm = 0;
		501	PL_localizing = 0;
		502	PL_dirty = 0;
		503	PL_restartop = 0;
		504
		505	{
		506	dSP;
		507	LOGOP myop;
		508
542	SvREFCNT_dec (GvAV (PL_defgv));	509	SvREFCNT_dec (GvAV (PL_defgv));
543	GvAV (PL_defgv) = coro->args; coro->args = 0;	510	GvAV (PL_defgv) = coro->args; coro->args = 0;
544		511
545	SPAGAIN;
546
547	Zero (&myop, 1, UNOP);	512	Zero (&myop, 1, LOGOP);
548	myop.op_next = Nullop;	513	myop.op_next = Nullop;
549	myop.op_flags = OPf_WANT_VOID;	514	myop.op_flags = OPf_WANT_VOID;
550		515
		516	PUSHMARK (SP);
		517	XPUSHs ((SV *)get_cv ("Coro::State::_coro_init", FALSE));
		518	PUTBACK;
551	PL_op = (OP *)&myop;	519	PL_op = (OP *)&myop;
552
553	PUSHMARK(SP);
554	XPUSHs (sub_init);
555	PUTBACK;
556	PL_op = PL_ppaddr[OP_ENTERSUB](aTHX);	520	PL_op = PL_ppaddr[OP_ENTERSUB](aTHX);
557	SPAGAIN;	521	SPAGAIN;
		522	}
558		523
559	ENTER; /* necessary e.g. for dounwind */	524	ENTER; /* necessary e.g. for dounwind */
560	}	525	}
561		526
562	static void	527	static void
…		…
567	SvREFCNT_dec (coro_mortal);	532	SvREFCNT_dec (coro_mortal);
568	coro_mortal = 0;	533	coro_mortal = 0;
569	}	534	}
570	}	535	}
571		536
572	static void	537	/* inject a fake call to Coro::State::_cctx_init into the execution */
		538	static void NOINLINE
573	prepare_cctx (coro_stack *cctx)	539	prepare_cctx (coro_cctx *cctx)
574	{	540	{
575	dSP;	541	dSP;
576	UNOP myop;	542	LOGOP myop;
577		543
578	Zero (&myop, 1, UNOP);	544	Zero (&myop, 1, LOGOP);
579	myop.op_next = PL_op;	545	myop.op_next = PL_op;
580	myop.op_flags = OPf_WANT_VOID \| OPf_STACKED;	546	myop.op_flags = OPf_WANT_VOID \| OPf_STACKED;
581		547
582	PUSHMARK(SP);	548	PUSHMARK (SP);
583	EXTEND (SP, 2);	549	EXTEND (SP, 2);
584	PUSHs (newSViv (PTR2IV (cctx)));	550	PUSHs (sv_2mortal (newSViv (PTR2IV (cctx))));
585	PUSHs ((SV *)get_cv ("Coro::State::cctx_init", FALSE));	551	PUSHs ((SV *)get_cv ("Coro::State::_cctx_init", FALSE));
586	PUTBACK;	552	PUTBACK;
		553	PL_op = (OP *)&myop;
587	PL_restartop = PL_ppaddr[OP_ENTERSUB](aTHX);	554	PL_op = PL_ppaddr[OP_ENTERSUB](aTHX);
588	SPAGAIN;	555	SPAGAIN;
589	}	556	}
590		557
591	static void	558	static void
592	coro_run (void *arg)	559	coro_run (void *arg)
593	{	560	{
		561	/* coro_run is the alternative tail of transfer(), so unlock here. */
		562	UNLOCK;
		563
594	/*	564	/*
595	* this is a _very_ stripped down perl interpreter ;)	565	* this is a _very_ stripped down perl interpreter ;)
596	*/	566	*/
597	UNLOCK;
598
599	PL_top_env = &PL_start_env;	567	PL_top_env = &PL_start_env;
		568
		569	/* inject call to cctx_init */
600	prepare_cctx ((coro_stack *)arg);	570	prepare_cctx ((coro_cctx *)arg);
601		571
602	/* somebody will hit me for both perl_run and PL_restartop */	572	/* somebody will hit me for both perl_run and PL_restartop */
603	perl_run (PERL_GET_CONTEXT);	573	PL_restartop = PL_op;
		574	perl_run (PL_curinterp);
604		575
605	fputs ("FATAL: C coroutine fell over the edge of the world, aborting.\n", stderr);	576	fputs ("FATAL: C coroutine fell over the edge of the world, aborting. Did you call exit in a coroutine?\n", stderr);
606	abort ();	577	abort ();
607	}	578	}
608		579
609	static coro_stack *	580	static coro_cctx *
610	stack_new ()	581	cctx_new ()
611	{	582	{
612	coro_stack *stack;	583	coro_cctx *cctx;
613		584
		585	++cctx_count;
		586
614	New (0, stack, 1, coro_stack);	587	New (0, cctx, 1, coro_cctx);
615		588
616	#if HAVE_MMAP	589	#if HAVE_MMAP
617		590
618	stack->ssize = ((STACKSIZE * sizeof (long) + PAGESIZE - 1) / PAGESIZE + STACKGUARD) * PAGESIZE;	591	cctx->ssize = ((STACKSIZE * sizeof (long) + PAGESIZE - 1) / PAGESIZE + STACKGUARD) * PAGESIZE;
619	/* mmap suppsedly does allocate-on-write for us */	592	/* mmap supposedly does allocate-on-write for us */
620	stack->sptr = mmap (0, stack->ssize, PROT_EXEC\|PROT_READ\|PROT_WRITE, MAP_PRIVATE\|MAP_ANONYMOUS, 0, 0);	593	cctx->sptr = mmap (0, cctx->ssize, PROT_EXEC\|PROT_READ\|PROT_WRITE, MAP_PRIVATE\|MAP_ANONYMOUS, 0, 0);
621		594
622	if (stack->sptr == (void *)-1)	595	if (cctx->sptr == (void *)-1)
623	{	596	{
624	perror ("FATAL: unable to mmap stack for coroutine");	597	perror ("FATAL: unable to mmap stack for coroutine");
625	_exit (EXIT_FAILURE);	598	_exit (EXIT_FAILURE);
626	}	599	}
627		600
628	# if STACKGUARD	601	# if STACKGUARD
629	mprotect (stack->sptr, STACKGUARD * PAGESIZE, PROT_NONE);	602	mprotect (cctx->sptr, STACKGUARD * PAGESIZE, PROT_NONE);
630	# endif	603	# endif
631		604
632	#else	605	#else
633		606
634	stack->ssize = STACKSIZE * (long)sizeof (long);	607	cctx->ssize = STACKSIZE * (long)sizeof (long);
635	New (0, stack->sptr, STACKSIZE, long);	608	New (0, cctx->sptr, STACKSIZE, long);
636		609
637	if (!stack->sptr)	610	if (!cctx->sptr)
638	{	611	{
639	perror (stderr, "FATAL: unable to malloc stack for coroutine");	612	perror ("FATAL: unable to malloc stack for coroutine");
640	_exit (EXIT_FAILURE);	613	_exit (EXIT_FAILURE);
641	}	614	}
642		615
643	#endif	616	#endif
644		617
		618	#if USE_VALGRIND
		619	cctx->valgrind_id = VALGRIND_STACK_REGISTER (
		620	STACKGUARD * PAGESIZE + (char *)cctx->sptr,
		621	cctx->ssize + (char *)cctx->sptr
		622	);
		623	#endif
		624
645	coro_create (&stack->cctx, coro_run, (void *)stack, stack->sptr, stack->ssize);	625	coro_create (&cctx->cctx, coro_run, (void *)cctx, cctx->sptr, cctx->ssize);
646		626
647	return stack;	627	return cctx;
648	}	628	}
649		629
650	static void	630	static void
651	stack_free (coro_stack *stack)	631	cctx_destroy (coro_cctx *cctx)
652	{	632	{
653	if (!stack)	633	if (!cctx)
654	return;	634	return;
655		635
		636	--cctx_count;
		637
		638	#if USE_VALGRIND
		639	VALGRIND_STACK_DEREGISTER (cctx->valgrind_id);
		640	#endif
		641
656	#if HAVE_MMAP	642	#if HAVE_MMAP
657	munmap (stack->sptr, stack->ssize);	643	munmap (cctx->sptr, cctx->ssize);
658	#else	644	#else
659	Safefree (stack->sptr);	645	Safefree (cctx->sptr);
660	#endif	646	#endif
661		647
662	Safefree (stack);	648	Safefree (cctx);
663	}	649	}
664		650
665	static coro_stack *stack_first;
666
667	static coro_stack *	651	static coro_cctx *
668	stack_get ()	652	cctx_get ()
669	{	653	{
670	coro_stack *stack;	654	coro_cctx *cctx;
671		655
672	if (stack_first)	656	if (cctx_first)
673	{	657	{
674	stack = stack_first;	658	cctx = cctx_first;
675	stack_first = stack->next;	659	cctx_first = cctx->next;
		660	--cctx_idle;
676	}	661	}
677	else	662	else
678	{	663	{
679	stack = stack_new ();	664	cctx = cctx_new ();
680	PL_op = PL_op->op_next;	665	PL_op = PL_op->op_next;
681	}	666	}
682		667
683	return stack;	668	return cctx;
684	}	669	}
685		670
686	static void	671	static void
687	stack_put (coro_stack *stack)	672	cctx_put (coro_cctx *cctx)
688	{	673	{
689	stack->next = stack_first;	674	/* free another cctx if overlimit */
690	stack_first = stack;	675	if (cctx_idle >= MAX_IDLE_CCTX)
		676	{
		677	coro_cctx *first = cctx_first;
		678	cctx_first = first->next;
		679	--cctx_idle;
		680
		681	assert (!first->inuse);
		682	cctx_destroy (first);
		683	}
		684
		685	++cctx_idle;
		686	cctx->next = cctx_first;
		687	cctx_first = cctx;
691	}	688	}
692		689
693	/* never call directly, always through the coro_state_transfer global variable */	690	/* never call directly, always through the coro_state_transfer global variable */
694	static void	691	static void NOINLINE
695	transfer_impl (struct coro prev, struct coro next, int flags)	692	transfer (struct coro prev, struct coro next)
696	{	693	{
697	dSTACKLEVEL;	694	dSTACKLEVEL;
698		695
699	/* sometimes transfer is only called to set idle_sp */	696	/* sometimes transfer is only called to set idle_sp */
700	if (flags == TRANSFER_SET_STACKLEVEL)	697	if (!next)
701	((coro_stack *)prev)->idle_sp = STACKLEVEL;	698	((coro_cctx *)prev)->idle_sp = STACKLEVEL;
702	else if (prev != next)	699	else if (prev != next)
703	{	700	{
704	coro_stack *prev__stack;	701	coro_cctx *prev__cctx;
		702
		703	if (prev->flags & CF_NEW)
		704	{
		705	/* create a new empty context */
		706	Newz (0, prev->cctx, 1, coro_cctx);
		707	prev->cctx->inuse = 1;
		708	prev->flags &= ~CF_NEW;
		709	prev->flags \|= CF_RUNNING;
		710	}
		711
		712	/TODO: must not croak here /
		713	if (!prev->flags & CF_RUNNING)
		714	croak ("Coro::State::transfer called with non-running prev Coro::State, but can only transfer from running states");
		715
		716	if (next->flags & CF_RUNNING)
		717	croak ("Coro::State::transfer called with running next Coro::State, but can only transfer to inactive states");
		718
		719	prev->flags &= ~CF_RUNNING;
		720	next->flags \|= CF_RUNNING;
705		721
706	LOCK;	722	LOCK;
707		723
708	if (next->mainstack)	724	if (next->flags & CF_NEW)
709	{	725	{
710	/* coroutine already started */	726	/* need to start coroutine */
711	SAVE (prev, flags);	727	next->flags &= ~CF_NEW;
712	LOAD (next);	728	/* first get rid of the old state */
		729	save_perl (prev);
		730	/* setup coroutine call */
		731	setup_coro (next);
		732	/* need a new stack */
		733	assert (!next->stack);
713	}	734	}
714	else	735	else
715	{	736	{
716	/* need to start coroutine */	737	/* coroutine already started */
717	/* first get rid of the old state */	738	save_perl (prev);
718	SAVE (prev, -1);	739	load_perl (next);
719	/* setup coroutine call */
720	setup_coro (next);
721	/* need a stack */
722	next->stack = 0;
723	}	740	}
724		741
725	if (!prev->stack)
726	/* create a new empty context */
727	Newz (0, prev->stack, 1, coro_stack);
728
729	prev__stack = prev->stack;	742	prev__cctx = prev->cctx;
730		743
731	/* possibly "free" the stack */	744	/* possibly "free" the cctx */
732	if (prev__stack->idle_sp == STACKLEVEL)	745	if (prev__cctx->idle_sp == STACKLEVEL)
733	{	746	{
734	stack_put (prev__stack);	747	/* I assume that STACKLEVEL is a stronger indicator than PL_top_env changes */
		748	assert (PL_top_env == prev__cctx->top_env);
		749
735	prev->stack = 0;	750	prev->cctx = 0;
		751
		752	cctx_put (prev__cctx);
		753	prev__cctx->inuse = 0;
736	}	754	}
737		755
738	if (!next->stack)	756	if (!next->cctx)
739	next->stack = stack_get ();
740
741	if (prev__stack != next->stack)
742	{	757	{
		758	next->cctx = cctx_get ();
		759	assert (!next->cctx->inuse);
		760	next->cctx->inuse = 1;
		761	}
		762
		763	if (prev__cctx != next->cctx)
		764	{
743	prev__stack->top_env = PL_top_env;	765	prev__cctx->top_env = PL_top_env;
744	PL_top_env = next->stack->top_env;	766	PL_top_env = next->cctx->top_env;
745	coro_transfer (&prev__stack->cctx, &next->stack->cctx);	767	coro_transfer (&prev__cctx->cctx, &next->cctx->cctx);
746	}	768	}
747		769
748	free_coro_mortal ();	770	free_coro_mortal ();
749		771
750	UNLOCK;	772	UNLOCK;
751	}	773	}
752	}	774	}
753		775
754	/* use this function pointer to call the above function */
755	/* this is done to increase chances of the compiler not inlining the call */
756	/* not static to make it even harder for the compiler (and theoretically impossible in most cases */
757	void (coro_state_transfer)(struct coro prev, struct coro *next, int flags) = transfer_impl;
758
759	struct transfer_args	776	struct transfer_args
760	{	777	{
761	struct coro prev, next;	778	struct coro prev, next;
762	int flags;
763	};	779	};
764		780
765	#define TRANSFER(ta) coro_state_transfer ((ta).prev, (ta).next, (ta).flags)	781	#define TRANSFER(ta) transfer ((ta).prev, (ta).next)
766		782
767	static void	783	static void
768	coro_state_destroy (struct coro *coro)	784	coro_state_destroy (struct coro *coro)
769	{	785	{
770	if (coro->refcnt--)	786	if (coro->refcnt--)
771	return;	787	return;
772		788
773	if (coro->mainstack && coro->mainstack != main_mainstack)	789	if (coro->mainstack && coro->mainstack != main_mainstack)
774	{	790	{
775	struct coro temp;	791	struct coro temp;
		792	Zero (&temp, 1, struct coro);
		793	temp.save = CORO_SAVE_ALL;
776		794
777	SAVE ((&temp), TRANSFER_SAVE_ALL);	795	if (coro->flags & CF_RUNNING)
778	LOAD (coro);	796	croak ("FATAL: tried to destroy currently running coroutine");
779		797
		798	save_perl (&temp);
		799	load_perl (coro);
		800
780	destroy_stacks ();	801	coro_destroy_stacks ();
781		802
782	LOAD ((&temp)); /* this will get rid of defsv etc.. */	803	load_perl (&temp); /* this will get rid of defsv etc.. */
783		804
784	coro->mainstack = 0;	805	coro->mainstack = 0;
785	}	806	}
786		807
787	stack_free (coro->stack);	808	cctx_destroy (coro->cctx);
788	SvREFCNT_dec (coro->args);	809	SvREFCNT_dec (coro->args);
789	Safefree (coro);	810	Safefree (coro);
790	}	811	}
791		812
792	static int	813	static int
…		…
808	++coro->refcnt;	829	++coro->refcnt;
809		830
810	return 0;	831	return 0;
811	}	832	}
812		833
813	static MGVTBL coro_state_vtbl = { 0, 0, 0, 0, coro_state_clear, 0, coro_state_dup, 0 };	834	static MGVTBL coro_state_vtbl = {
		835	0, 0, 0, 0,
		836	coro_state_clear,
		837	0,
		838	#ifdef MGf_DUP
		839	coro_state_dup,
		840	#else
		841	# define MGf_DUP 0
		842	#endif
		843	};
814		844
815	static struct coro *	845	static struct coro *
816	SvSTATE (SV *coro)	846	SvSTATE (SV *coro)
817	{	847	{
818	HV *stash;	848	HV *stash;
…		…
833	assert (mg->mg_type == PERL_MAGIC_ext);	863	assert (mg->mg_type == PERL_MAGIC_ext);
834	return (struct coro *)mg->mg_ptr;	864	return (struct coro *)mg->mg_ptr;
835	}	865	}
836		866
837	static void	867	static void
838	prepare_transfer (struct transfer_args ta, SV prev, SV *next, int flags)	868	prepare_transfer (struct transfer_args ta, SV prev_sv, SV *next_sv)
839	{	869	{
840	ta->prev = SvSTATE (prev);	870	ta->prev = SvSTATE (prev_sv);
841	ta->next = SvSTATE (next);	871	ta->next = SvSTATE (next_sv);
842	ta->flags = flags;
843	}	872	}
844		873
845	static void	874	static void
846	api_transfer (SV prev, SV next, int flags)	875	api_transfer (SV prev_sv, SV next_sv)
847	{	876	{
848	dTHX;
849	struct transfer_args ta;	877	struct transfer_args ta;
850		878
851	prepare_transfer (&ta, prev, next, flags);	879	prepare_transfer (&ta, prev_sv, next_sv);
852	TRANSFER (ta);	880	TRANSFER (ta);
		881	}
		882
		883	static int
		884	api_save (SV *coro_sv, int new_save)
		885	{
		886	struct coro *coro = SvSTATE (coro_sv);
		887	int old_save = coro->save;
		888
		889	if (new_save >= 0)
		890	coro->save = new_save;
		891
		892	return old_save;
853	}	893	}
854		894
855	/ Coro ******************************************************************/	895	/ Coro ******************************************************************/
856		896
857	#define PRIO_MAX 3	897	#define PRIO_MAX 3
…		…
860	#define PRIO_LOW -1	900	#define PRIO_LOW -1
861	#define PRIO_IDLE -3	901	#define PRIO_IDLE -3
862	#define PRIO_MIN -4	902	#define PRIO_MIN -4
863		903
864	/* for Coro.pm */	904	/* for Coro.pm */
865	static GV coro_current, coro_idle;	905	static SV *coro_current;
866	static AV *coro_ready [PRIO_MAX-PRIO_MIN+1];	906	static AV *coro_ready [PRIO_MAX-PRIO_MIN+1];
867	static int coro_nready;	907	static int coro_nready;
868		908
869	static void	909	static void
870	coro_enq (SV *sv)	910	coro_enq (SV *coro_sv)
871	{	911	{
872	int prio;
873
874	if (SvTYPE (sv) != SVt_PVHV)
875	croak ("Coro::ready tried to enqueue something that is not a coroutine");
876
877	prio = SvSTATE (sv)->prio;
878
879	av_push (coro_ready [prio - PRIO_MIN], sv);	912	av_push (coro_ready [SvSTATE (coro_sv)->prio - PRIO_MIN], coro_sv);
880	coro_nready++;	913	coro_nready++;
881	}	914	}
882		915
883	static SV *	916	static SV *
884	coro_deq (int min_prio)	917	coro_deq (int min_prio)
…		…
897	}	930	}
898		931
899	return 0;	932	return 0;
900	}	933	}
901		934
902	static void	935	static int
903	api_ready (SV *coro)	936	api_ready (SV *coro_sv)
904	{	937	{
905	dTHX;	938	struct coro *coro;
906		939
907	if (SvROK (coro))	940	if (SvROK (coro_sv))
908	coro = SvRV (coro);	941	coro_sv = SvRV (coro_sv);
		942
		943	coro = SvSTATE (coro_sv);
		944
		945	if (coro->flags & CF_READY)
		946	return 0;
		947
		948	#if 0 /* this is actually harmless */
		949	if (coro->flags & CF_RUNNING)
		950	croak ("Coro::ready called on currently running coroutine");
		951	#endif
		952
		953	coro->flags \|= CF_READY;
909		954
910	LOCK;	955	LOCK;
911	coro_enq (SvREFCNT_inc (coro));	956	coro_enq (SvREFCNT_inc (coro_sv));
912	UNLOCK;	957	UNLOCK;
		958
		959	return 1;
		960	}
		961
		962	static int
		963	api_is_ready (SV *coro_sv)
		964	{
		965	return !!SvSTATE (coro_sv)->flags & CF_READY;
913	}	966	}
914		967
915	static void	968	static void
916	prepare_schedule (struct transfer_args *ta)	969	prepare_schedule (struct transfer_args *ta)
917	{	970	{
918	SV current, prev, *next;	971	SV prev, next;
919
920	current = GvSV (coro_current);
921		972
922	for (;;)	973	for (;;)
923	{	974	{
924	LOCK;	975	LOCK;
925	next = coro_deq (PRIO_MIN);	976	next = coro_deq (PRIO_MIN);
…		…
934	ENTER;	985	ENTER;
935	SAVETMPS;	986	SAVETMPS;
936		987
937	PUSHMARK (SP);	988	PUSHMARK (SP);
938	PUTBACK;	989	PUTBACK;
939	call_sv (GvSV (coro_idle), G_DISCARD);	990	call_sv (get_sv ("Coro::idle", FALSE), G_DISCARD);
940		991
941	FREETMPS;	992	FREETMPS;
942	LEAVE;	993	LEAVE;
943	}	994	}
944	}	995	}
945		996
946	prev = SvRV (current);	997	prev = SvRV (coro_current);
947	SvRV (current) = next;	998	SvRV_set (coro_current, next);
948		999
949	/* free this only after the transfer */	1000	/* free this only after the transfer */
950	LOCK;	1001	LOCK;
951	free_coro_mortal ();	1002	free_coro_mortal ();
952	UNLOCK;	1003	UNLOCK;
953	coro_mortal = prev;	1004	coro_mortal = prev;
954		1005
		1006	assert (!SvROK(prev));//D
		1007	assert (!SvROK(next));//D
		1008
955	ta->prev = SvSTATE (prev);	1009	ta->prev = SvSTATE (prev);
956	ta->next = SvSTATE (next);	1010	ta->next = SvSTATE (next);
957	ta->flags = TRANSFER_SAVE_ALL;	1011
		1012	assert (ta->next->flags & CF_READY);
		1013	ta->next->flags &= ~CF_READY;
958	}	1014	}
959		1015
960	static void	1016	static void
961	prepare_cede (struct transfer_args *ta)	1017	prepare_cede (struct transfer_args *ta)
962	{	1018	{
963	LOCK;	1019	api_ready (coro_current);
964	coro_enq (SvREFCNT_inc (SvRV (GvSV (coro_current))));
965	UNLOCK;
966		1020
967	prepare_schedule (ta);	1021	prepare_schedule (ta);
968	}	1022	}
969		1023
970	static void	1024	static void
971	api_schedule (void)	1025	api_schedule (void)
972	{	1026	{
973	dTHX;
974	struct transfer_args ta;	1027	struct transfer_args ta;
975		1028
976	prepare_schedule (&ta);	1029	prepare_schedule (&ta);
977	TRANSFER (ta);	1030	TRANSFER (ta);
978	}	1031	}
979		1032
980	static void	1033	static void
981	api_cede (void)	1034	api_cede (void)
982	{	1035	{
983	dTHX;
984	struct transfer_args ta;	1036	struct transfer_args ta;
985		1037
986	prepare_cede (&ta);	1038	prepare_cede (&ta);
987	TRANSFER (ta);	1039	TRANSFER (ta);
988	}	1040	}
…		…
998	#endif	1050	#endif
999	BOOT_PAGESIZE;	1051	BOOT_PAGESIZE;
1000		1052
1001	coro_state_stash = gv_stashpv ("Coro::State", TRUE);	1053	coro_state_stash = gv_stashpv ("Coro::State", TRUE);
1002		1054
1003	newCONSTSUB (coro_state_stash, "SAVE_DEFAV", newSViv (TRANSFER_SAVE_DEFAV));	1055	newCONSTSUB (coro_state_stash, "SAVE_DEFAV", newSViv (CORO_SAVE_DEFAV));
1004	newCONSTSUB (coro_state_stash, "SAVE_DEFSV", newSViv (TRANSFER_SAVE_DEFSV));	1056	newCONSTSUB (coro_state_stash, "SAVE_DEFSV", newSViv (CORO_SAVE_DEFSV));
1005	newCONSTSUB (coro_state_stash, "SAVE_ERRSV", newSViv (TRANSFER_SAVE_ERRSV));	1057	newCONSTSUB (coro_state_stash, "SAVE_ERRSV", newSViv (CORO_SAVE_ERRSV));
		1058	newCONSTSUB (coro_state_stash, "SAVE_IRSSV", newSViv (CORO_SAVE_IRSSV));
		1059	newCONSTSUB (coro_state_stash, "SAVE_ALL", newSViv (CORO_SAVE_ALL));
1006		1060
1007	main_mainstack = PL_mainstack;	1061	main_mainstack = PL_mainstack;
1008		1062
1009	coroapi.ver = CORO_API_VERSION;	1063	coroapi.ver = CORO_API_VERSION;
1010	coroapi.transfer = api_transfer;	1064	coroapi.transfer = api_transfer;
…		…
1020	HV *hv;	1074	HV *hv;
1021	int i;	1075	int i;
1022		1076
1023	Newz (0, coro, 1, struct coro);	1077	Newz (0, coro, 1, struct coro);
1024	coro->args = newAV ();	1078	coro->args = newAV ();
		1079	coro->save = CORO_SAVE_ALL;
		1080	coro->flags = CF_NEW;
1025		1081
1026	hv = newHV ();	1082	hv = newHV ();
1027	sv_magicext ((SV )hv, 0, PERL_MAGIC_ext, &coro_state_vtbl, (char )coro, 0)->mg_flags \|= MGf_DUP;	1083	sv_magicext ((SV )hv, 0, PERL_MAGIC_ext, &coro_state_vtbl, (char )coro, 0)->mg_flags \|= MGf_DUP;
1028	RETVAL = sv_bless (newRV_noinc ((SV *)hv), gv_stashpv (klass, 1));	1084	RETVAL = sv_bless (newRV_noinc ((SV *)hv), gv_stashpv (klass, 1));
1029		1085
1030	for (i = 1; i < items; i++)	1086	for (i = 1; i < items; i++)
1031	av_push (coro->args, newSVsv (ST (i)));	1087	av_push (coro->args, newSVsv (ST (i)));
1032
1033	/coro->mainstack = 0; //actual work is done inside transfer /
1034	/coro->stack = 0;/
1035	}	1088	}
1036	OUTPUT:	1089	OUTPUT:
		1090	RETVAL
		1091
		1092	int
		1093	save (SV *coro, int new_save = -1)
		1094	CODE:
		1095	RETVAL = api_save (coro, new_save);
		1096	OUTPUT:
1037	RETVAL	1097	RETVAL
1038		1098
1039	void	1099	void
1040	_set_stacklevel (...)	1100	_set_stacklevel (...)
1041	ALIAS:	1101	ALIAS:
1042	Coro::State::transfer = 1	1102	Coro::State::transfer = 1
1043	Coro::schedule = 2	1103	Coro::schedule = 2
1044	Coro::cede = 3	1104	Coro::cede = 3
1045	Coro::Cont::yield = 4
1046	CODE:	1105	CODE:
1047	{	1106	{
1048	struct transfer_args ta;	1107	struct transfer_args ta;
1049		1108
1050	switch (ix)	1109	switch (ix)
1051	{	1110	{
1052	case 0:	1111	case 0:
1053	ta.prev = (struct coro )INT2PTR (coro_stack , SvIV (ST (0)));	1112	ta.prev = (struct coro )INT2PTR (coro_cctx , SvIV (ST (0)));
1054	ta.next = 0;	1113	ta.next = 0;
1055	ta.flags = TRANSFER_SET_STACKLEVEL;
1056	break;	1114	break;
1057		1115
1058	case 1:	1116	case 1:
1059	if (items != 3)	1117	if (items != 2)
1060	croak ("Coro::State::transfer(prev,next,flags) expects three arguments, not %d", items);	1118	croak ("Coro::State::transfer (prev,next) expects two arguments, not %d", items);
1061		1119
1062	prepare_transfer (&ta, ST (0), ST (1), SvIV (ST (2)));	1120	prepare_transfer (&ta, ST (0), ST (1));
1063	break;	1121	break;
1064		1122
1065	case 2:	1123	case 2:
1066	prepare_schedule (&ta);	1124	prepare_schedule (&ta);
1067	break;	1125	break;
1068		1126
1069	case 3:	1127	case 3:
1070	prepare_cede (&ta);	1128	prepare_cede (&ta);
1071	break;	1129	break;
1072
1073	case 4:
1074	{
1075	SV *yieldstack;
1076	SV *sv;
1077	AV *defav = GvAV (PL_defgv);
1078
1079	yieldstack = *hv_fetch (
1080	(HV *)SvRV (GvSV (coro_current)),
1081	"yieldstack", sizeof ("yieldstack") - 1,
1082	0
1083	);
1084
1085	/* set up @_ -- ugly */
1086	av_clear (defav);
1087	av_fill (defav, items - 1);
1088	while (items--)
1089	av_store (defav, items, SvREFCNT_inc (ST(items)));
1090
1091	sv = av_pop ((AV *)SvRV (yieldstack));
1092	ta.prev = SvSTATE (av_fetch ((AV )SvRV (sv), 0, 0));
1093	ta.next = SvSTATE (av_fetch ((AV )SvRV (sv), 1, 0));
1094	ta.flags = 0;
1095	SvREFCNT_dec (sv);
1096	}
1097	break;
1098
1099	}	1130	}
1100		1131
1101	TRANSFER (ta);	1132	TRANSFER (ta);
1102	}	1133	}
1103		1134
…		…
1110	sv_unmagic (SvRV (dst), PERL_MAGIC_ext);	1141	sv_unmagic (SvRV (dst), PERL_MAGIC_ext);
1111		1142
1112	++coro_src->refcnt;	1143	++coro_src->refcnt;
1113	sv_magicext (SvRV (dst), 0, PERL_MAGIC_ext, &coro_state_vtbl, (char *)coro_src, 0)->mg_flags \|= MGf_DUP;	1144	sv_magicext (SvRV (dst), 0, PERL_MAGIC_ext, &coro_state_vtbl, (char *)coro_src, 0)->mg_flags \|= MGf_DUP;
1114	}	1145	}
1115
1116	void
1117	_nonlocal_goto (IV nextop)
1118	CODE:
1119	/* uuh, somebody will kill me again for this */
1120	PL_op->op_next = INT2PTR (OP *, nextop);
1121		1146
1122	void	1147	void
1123	_exit (code)	1148	_exit (code)
1124	int code	1149	int code
1125	PROTOTYPE: $	1150	PROTOTYPE: $
1126	CODE:	1151	CODE:
1127	_exit (code);	1152	_exit (code);
1128		1153
		1154	int
		1155	cctx_count ()
		1156	CODE:
		1157	RETVAL = cctx_count;
		1158	OUTPUT:
		1159	RETVAL
		1160
		1161	int
		1162	cctx_idle ()
		1163	CODE:
		1164	RETVAL = cctx_idle;
		1165	OUTPUT:
		1166	RETVAL
		1167
1129	MODULE = Coro::State PACKAGE = Coro	1168	MODULE = Coro::State PACKAGE = Coro
1130		1169
1131	BOOT:	1170	BOOT:
1132	{	1171	{
1133	int i;	1172	int i;
…		…
1139	newCONSTSUB (coro_stash, "PRIO_NORMAL", newSViv (PRIO_NORMAL));	1178	newCONSTSUB (coro_stash, "PRIO_NORMAL", newSViv (PRIO_NORMAL));
1140	newCONSTSUB (coro_stash, "PRIO_LOW", newSViv (PRIO_LOW));	1179	newCONSTSUB (coro_stash, "PRIO_LOW", newSViv (PRIO_LOW));
1141	newCONSTSUB (coro_stash, "PRIO_IDLE", newSViv (PRIO_IDLE));	1180	newCONSTSUB (coro_stash, "PRIO_IDLE", newSViv (PRIO_IDLE));
1142	newCONSTSUB (coro_stash, "PRIO_MIN", newSViv (PRIO_MIN));	1181	newCONSTSUB (coro_stash, "PRIO_MIN", newSViv (PRIO_MIN));
1143		1182
1144	coro_current = gv_fetchpv ("Coro::current", TRUE, SVt_PV);	1183	coro_current = get_sv ("Coro::current", FALSE);
1145	coro_idle = gv_fetchpv ("Coro::idle" , TRUE, SVt_PV);	1184	SvREADONLY_on (coro_current);
1146		1185
1147	for (i = PRIO_MAX - PRIO_MIN + 1; i--; )	1186	for (i = PRIO_MAX - PRIO_MIN + 1; i--; )
1148	coro_ready[i] = newAV ();	1187	coro_ready[i] = newAV ();
1149		1188
1150	{	1189	{
1151	SV *sv = perl_get_sv("Coro::API", 1);	1190	SV *sv = perl_get_sv("Coro::API", 1);
1152		1191
1153	coroapi.schedule = api_schedule;	1192	coroapi.schedule = api_schedule;
		1193	coroapi.save = api_save;
1154	coroapi.cede = api_cede;	1194	coroapi.cede = api_cede;
1155	coroapi.ready = api_ready;	1195	coroapi.ready = api_ready;
		1196	coroapi.is_ready = api_is_ready;
1156	coroapi.nready = &coro_nready;	1197	coroapi.nready = &coro_nready;
1157	coroapi.current = coro_current;	1198	coroapi.current = coro_current;
1158		1199
1159	GCoroAPI = &coroapi;	1200	GCoroAPI = &coroapi;
1160	sv_setiv (sv, (IV)&coroapi);	1201	sv_setiv (sv, (IV)&coroapi);
1161	SvREADONLY_on (sv);	1202	SvREADONLY_on (sv);
1162	}	1203	}
1163	}	1204	}
		1205
		1206	void
		1207	_set_current (SV *current)
		1208	PROTOTYPE: $
		1209	CODE:
		1210	SvREFCNT_dec (SvRV (coro_current));
		1211	SvRV_set (coro_current, SvREFCNT_inc (SvRV (current)));
1164		1212
1165	int	1213	int
1166	prio (Coro::State coro, int newprio = 0)	1214	prio (Coro::State coro, int newprio = 0)
1167	ALIAS:	1215	ALIAS:
1168	nice = 1	1216	nice = 1
…		…
1180		1228
1181	coro->prio = newprio;	1229	coro->prio = newprio;
1182	}	1230	}
1183	}	1231	}
1184		1232
1185	void	1233	SV *
1186	ready (SV *self)	1234	ready (SV *self)
1187	PROTOTYPE: $	1235	PROTOTYPE: $
1188	CODE:	1236	CODE:
1189	api_ready (self);	1237	RETVAL = boolSV (api_ready (self));
		1238	OUTPUT:
		1239	RETVAL
		1240
		1241	SV *
		1242	is_ready (SV *self)
		1243	PROTOTYPE: $
		1244	CODE:
		1245	RETVAL = boolSV (api_is_ready (self));
		1246	OUTPUT:
		1247	RETVAL
1190		1248
1191	int	1249	int
1192	nready (...)	1250	nready (...)
1193	PROTOTYPE:	1251	PROTOTYPE:
1194	CODE:	1252	CODE:
…		…
1200		1258
1201	SV *	1259	SV *
1202	_get_state ()	1260	_get_state ()
1203	CODE:	1261	CODE:
1204	{	1262	{
1205	struct {	1263	struct io_state *data;
1206	int errorno;
1207	int laststype;
1208	int laststatval;
1209	Stat_t statcache;
1210	} data;
1211		1264
		1265	RETVAL = newSV (sizeof (struct io_state));
		1266	data = (struct io_state *)SvPVX (RETVAL);
		1267	SvCUR_set (RETVAL, sizeof (struct io_state));
		1268	SvPOK_only (RETVAL);
		1269
1212	data.errorno = errno;	1270	data->errorno = errno;
1213	data.laststype = PL_laststype;	1271	data->laststype = PL_laststype;
1214	data.laststatval = PL_laststatval;	1272	data->laststatval = PL_laststatval;
1215	data.statcache = PL_statcache;	1273	data->statcache = PL_statcache;
1216
1217	RETVAL = newSVpvn ((char *)&data, sizeof data);
1218	}	1274	}
1219	OUTPUT:	1275	OUTPUT:
1220	RETVAL	1276	RETVAL
1221		1277
1222	void	1278	void
1223	_set_state (char *data_)	1279	_set_state (char *data_)
1224	PROTOTYPE: $	1280	PROTOTYPE: $
1225	CODE:	1281	CODE:
1226	{	1282	{
1227	struct {	1283	struct io_state data = (void )data_;
1228	int errorno;
1229	int laststype;
1230	int laststatval;
1231	Stat_t statcache;
1232	} data = (void )data_;
1233		1284
1234	errno = data->errorno;	1285	errno = data->errorno;
1235	PL_laststype = data->laststype;	1286	PL_laststype = data->laststype;
1236	PL_laststatval = data->laststatval;	1287	PL_laststatval = data->laststatval;
1237	PL_statcache = data->statcache;	1288	PL_statcache = data->statcache;
1238	}	1289	}
		1290

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Comparing Coro/Coro/State.xs (file contents): Revision 1.99 by root, Sun Nov 26 23:53:20 2006 UTC vs. Revision 1.122 by root, Mon Dec 4 13:47:56 2006 UTC

Diff Legend

Comparing Coro/Coro/State.xs (file contents):
Revision 1.99 by root, Sun Nov 26 23:53:20 2006 UTC vs.
Revision 1.122 by root, Mon Dec 4 13:47:56 2006 UTC