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

Comparing Coro/Coro/State.xs (file contents):
Revision 1.93 by root, Sun Nov 26 03:22:50 2006 UTC vs.
Revision 1.121 by root, Sat Dec 2 20:40:25 2006 UTC

…		…
1	#define PERL_NO_GET_CONTEXT
2
3	#include "libcoro/coro.c"	1	#include "libcoro/coro.c"
4		2
5	#include "EXTERN.h"	3	#include "EXTERN.h"
6	#include "perl.h"	4	#include "perl.h"
7	#include "XSUB.h"	5	#include "XSUB.h"
8		6
9	#include "patchlevel.h"	7	#include "patchlevel.h"
10		8
11	#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)
12	# ifndef PL_ppaddr	23	# ifndef PL_ppaddr
13	# define PL_ppaddr ppaddr	24	# define PL_ppaddr ppaddr
14	# endif	25	# endif
15	# ifndef call_sv	26	# ifndef call_sv
16	# define call_sv perl_call_sv	27	# define call_sv perl_call_sv
54	# ifndef PAGESIZE	65	# ifndef PAGESIZE
55	# define PAGESIZE pagesize	66	# define PAGESIZE pagesize
56	# define BOOT_PAGESIZE pagesize = sysconf (_SC_PAGESIZE)	67	# define BOOT_PAGESIZE pagesize = sysconf (_SC_PAGESIZE)
57	static long pagesize;	68	static long pagesize;
58	# else	69	# else
59	# define BOOT_PAGESIZE	70	# define BOOT_PAGESIZE (void)0
60	# endif	71	# endif
		72	#else
		73	# define PAGESIZE 0
		74	# define BOOT_PAGESIZE (void)0
61	#endif	75	#endif
62		76
63	/* 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
64	* 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
65	* and should be unique. */	79	* and should be unique. */
66	#define dSTACKLEVEL int stacklevel	80	#define dSTACKLEVEL int stacklevel
67	#define STACKLEVEL ((void *)&stacklevel)	81	#define STACKLEVEL ((void *)&stacklevel)
68		82
69	#define IN_DESTRUCT (PL_main_cv == Nullcv)	83	#define IN_DESTRUCT (PL_main_cv == Nullcv)
70		84
71	#define labs(l) ((l) >= 0 ? (l) : -(l))	85	#if __GNUC__ >= 3
		86	# define attribute(x) __attribute__(x)
		87	#else
		88	# define attribute(x)
		89	#endif
		90
		91	#define NOINLINE attribute ((noinline))
72		92
73	#include "CoroAPI.h"	93	#include "CoroAPI.h"
74		94
75	#define TRANSFER_SET_STACKLEVEL 0x8bfbfbfb /* magic cookie */	95	#define TRANSFER_SET_STACKLEVEL 0x8bfbfbfb /* magic cookie */
76		96
…		…
81	#else	101	#else
82	# define LOCK (void)0	102	# define LOCK (void)0
83	# define UNLOCK (void)0	103	# define UNLOCK (void)0
84	#endif	104	#endif
85		105
		106	struct io_state
		107	{
		108	int errorno;
		109	I32 laststype;
		110	int laststatval;
		111	Stat_t statcache;
		112	};
		113
86	static struct CoroAPI coroapi;	114	static struct CoroAPI coroapi;
87	static AV main_mainstack; / used to differentiate between $main and others */	115	static AV main_mainstack; / used to differentiate between $main and others */
88	static HV coro_state_stash, coro_stash;	116	static HV coro_state_stash, coro_stash;
89	static SV coro_mortal; / will be freed after next transfer */	117	static SV coro_mortal; / will be freed after next transfer */
90		118
		119	static struct coro_cctx *cctx_first;
		120	static int cctx_count, cctx_idle;
		121
91	/* this is a structure representing a c-level coroutine */	122	/* this is a structure representing a c-level coroutine */
92	typedef struct coro_stack {	123	typedef struct coro_cctx {
93	struct coro_stack *next;	124	struct coro_cctx *next;
94		125
95	/* the stack */	126	/* the stack */
96	void *sptr;	127	void *sptr;
97	long ssize; /* positive == mmap, otherwise malloc */	128	long ssize; /* positive == mmap, otherwise malloc */
98		129
99	/* cpu state */	130	/* cpu state */
100	void idle_sp; / original stacklevel when coroutine was created */	131	void idle_sp; / sp of top-level transfer/schedule/cede call */
101	JMPENV *top_env;	132	JMPENV *top_env;
102	coro_context cctx;	133	coro_context cctx;
103	} coro_stack;
104		134
105	/* the (fake) coro_stack representing the main program */	135	int inuse;
106	static coro_stack *main_stack;	136
		137	#if USE_VALGRIND
		138	int valgrind_id;
		139	#endif
		140	} coro_cctx;
		141
		142	enum {
		143	CF_RUNNING = 0x0001, /* coroutine is running */
		144	CF_READY = 0x0002, /* coroutine is ready */
		145	CF_NEW = 0x0004, /* ahs never been switched to */
		146	};
107		147
108	/* this is a structure representing a perl-level coroutine */	148	/* this is a structure representing a perl-level coroutine */
109	struct coro {	149	struct coro {
110	/* the c coroutine allocated to this perl coroutine, if any */	150	/* the c coroutine allocated to this perl coroutine, if any */
111	coro_stack *stack;	151	coro_cctx *cctx;
112		152
113	/* data associated with this coroutine (initial args) */	153	/* data associated with this coroutine (initial args) */
114	AV *args;	154	AV *args;
115	int refcnt;	155	int refcnt;
		156	int flags;
116		157
117	/* optionally saved, might be zero */	158	/* optionally saved, might be zero */
118	AV *defav;	159	AV *defav;
119	SV *defsv;	160	SV *defsv;
120	SV *errsv;	161	SV *errsv;
121		162
122	/* saved global state not related to stacks */	163	#define VAR(name,type) type name;
123	U8 dowarn;	164	# include "state.h"
124	I32 in_eval;	165	#undef VAR
125
126	/* the stacks and related info (callchain etc..) */
127	PERL_SI *curstackinfo;
128	AV *curstack;
129	AV *mainstack;
130	SV **stack_sp;
131	OP *op;
132	SV **curpad;
133	AV *comppad;
134	CV *compcv;
135	SV **stack_base;
136	SV **stack_max;
137	SV **tmps_stack;
138	I32 tmps_floor;
139	I32 tmps_ix;
140	I32 tmps_max;
141	I32 *markstack;
142	I32 *markstack_ptr;
143	I32 *markstack_max;
144	I32 *scopestack;
145	I32 scopestack_ix;
146	I32 scopestack_max;
147	ANY *savestack;
148	I32 savestack_ix;
149	I32 savestack_max;
150	OP **retstack;
151	I32 retstack_ix;
152	I32 retstack_max;
153	PMOP *curpm;
154	COP *curcop;
155		166
156	/* coro process data */	167	/* coro process data */
157	int prio;	168	int prio;
158	};	169	};
159		170
160	typedef struct coro *Coro__State;	171	typedef struct coro *Coro__State;
161	typedef struct coro *Coro__State_or_hashref;	172	typedef struct coro *Coro__State_or_hashref;
162		173
163	static AV *	174	static AV *
164	coro_clone_padlist (pTHX_ CV *cv)	175	coro_clone_padlist (CV *cv)
165	{	176	{
166	AV *padlist = CvPADLIST (cv);	177	AV *padlist = CvPADLIST (cv);
167	AV newpadlist, newpad;	178	AV newpadlist, newpad;
168		179
169	newpadlist = newAV ();	180	newpadlist = newAV ();
170	AvREAL_off (newpadlist);	181	AvREAL_off (newpadlist);
171	#if PERL_VERSION < 9	182	#if PERL_VERSION_ATLEAST (5,9,0)
		183	Perl_pad_push (aTHX_ padlist, AvFILLp (padlist) + 1);
		184	#else
172	Perl_pad_push (aTHX_ padlist, AvFILLp (padlist) + 1, 1);	185	Perl_pad_push (aTHX_ padlist, AvFILLp (padlist) + 1, 1);
173	#else
174	Perl_pad_push (aTHX_ padlist, AvFILLp (padlist) + 1);
175	#endif	186	#endif
176	newpad = (AV *)AvARRAY (padlist)[AvFILLp (padlist)];	187	newpad = (AV *)AvARRAY (padlist)[AvFILLp (padlist)];
177	--AvFILLp (padlist);	188	--AvFILLp (padlist);
178		189
179	av_store (newpadlist, 0, SvREFCNT_inc (*av_fetch (padlist, 0, FALSE)));	190	av_store (newpadlist, 0, SvREFCNT_inc (*av_fetch (padlist, 0, FALSE)));
…		…
181		192
182	return newpadlist;	193	return newpadlist;
183	}	194	}
184		195
185	static void	196	static void
186	free_padlist (pTHX_ AV *padlist)	197	free_padlist (AV *padlist)
187	{	198	{
188	/* may be during global destruction */	199	/* may be during global destruction */
189	if (SvREFCNT (padlist))	200	if (SvREFCNT (padlist))
190	{	201	{
191	I32 i = AvFILLp (padlist);	202	I32 i = AvFILLp (padlist);
…		…
212	AV *padlist;	223	AV *padlist;
213	AV av = (AV )mg->mg_obj;	224	AV av = (AV )mg->mg_obj;
214		225
215	/* casting is fun. */	226	/* casting is fun. */
216	while (&PL_sv_undef != (SV )(padlist = (AV )av_pop (av)))	227	while (&PL_sv_undef != (SV )(padlist = (AV )av_pop (av)))
217	free_padlist (aTHX_ padlist);	228	free_padlist (padlist);
218		229
219	SvREFCNT_dec (av);	230	SvREFCNT_dec (av);
220		231
221	return 0;	232	return 0;
222	}	233	}
223		234
224	#define PERL_MAGIC_coro PERL_MAGIC_ext	235	#define PERL_MAGIC_coro PERL_MAGIC_ext
225		236
226	static MGVTBL vtbl_coro = {0, 0, 0, 0, coro_cv_free};	237	static MGVTBL vtbl_coro = {0, 0, 0, 0, coro_cv_free};
227		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
228	/* the next two functions merely cache the padlists */	246	/* the next two functions merely cache the padlists */
229	static void	247	static void
230	get_padlist (pTHX_ CV *cv)	248	get_padlist (CV *cv)
231	{	249	{
232	MAGIC mg = mg_find ((SV )cv, PERL_MAGIC_coro);	250	MAGIC *mg = CORO_MAGIC (cv);
		251	AV *av;
233		252
234	if (mg && AvFILLp ((AV *)mg->mg_obj) >= 0)	253	if (mg && AvFILLp ((av = (AV *)mg->mg_obj)) >= 0)
235	CvPADLIST (cv) = (AV )av_pop ((AV )mg->mg_obj);	254	CvPADLIST (cv) = (AV *)AvARRAY (av)[AvFILLp (av)--];
236	else	255	else
237	{	256	{
238	#if 0	257	#if 0
239	/* this should work - but it doesn't :( */	258	/* this is probably cleaner, but also slower? */
240	CV *cp = Perl_cv_clone (aTHX_ cv);	259	CV *cp = Perl_cv_clone (cv);
241	CvPADLIST (cv) = CvPADLIST (cp);	260	CvPADLIST (cv) = CvPADLIST (cp);
242	CvPADLIST (cp) = 0;	261	CvPADLIST (cp) = 0;
243	SvREFCNT_dec (cp);	262	SvREFCNT_dec (cp);
244	#else	263	#else
245	CvPADLIST (cv) = coro_clone_padlist (aTHX_ cv);	264	CvPADLIST (cv) = coro_clone_padlist (cv);
246	#endif	265	#endif
247	}	266	}
248	}	267	}
249		268
250	static void	269	static void
251	put_padlist (pTHX_ CV *cv)	270	put_padlist (CV *cv)
252	{	271	{
253	MAGIC mg = mg_find ((SV )cv, PERL_MAGIC_coro);	272	MAGIC *mg = CORO_MAGIC (cv);
		273	AV *av;
254		274
255	if (!mg)	275	if (!mg)
256	{	276	{
257	sv_magic ((SV *)cv, 0, PERL_MAGIC_coro, 0, 0);	277	sv_magic ((SV *)cv, 0, PERL_MAGIC_coro, 0, 0);
258	mg = mg_find ((SV *)cv, PERL_MAGIC_coro);	278	mg = mg_find ((SV *)cv, PERL_MAGIC_coro);
259	mg->mg_virtual = &vtbl_coro;	279	mg->mg_virtual = &vtbl_coro;
260	mg->mg_obj = (SV *)newAV ();	280	mg->mg_obj = (SV *)newAV ();
261	}	281	}
262		282
263	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);
264	}	289	}
265		290
266	#define SB do {	291	#define SB do {
267	#define SE } while (0)	292	#define SE } while (0)
268		293
269	#define LOAD(state) load_state(aTHX_ (state));	294	#define LOAD(state) load_state ((state))
270	#define SAVE(state,flags) save_state(aTHX_ (state),(flags));	295	#define SAVE(state,flags) save_state ((state),(flags))
271		296
272	#define REPLACE_SV(sv,val) SB SvREFCNT_dec(sv); (sv) = (val); (val) = 0; SE	297	#define REPLACE_SV(sv,val) SB SvREFCNT_dec (sv); (sv) = (val); (val) = 0; SE
273		298
274	static void	299	static void
275	load_state(pTHX_ Coro__State c)	300	load_state (Coro__State c)
276	{	301	{
277	PL_dowarn = c->dowarn;	302	#define VAR(name,type) PL_ ## name = c->name;
278	PL_in_eval = c->in_eval;	303	# include "state.h"
279		304	#undef VAR
280	PL_curstackinfo = c->curstackinfo;
281	PL_curstack = c->curstack;
282	PL_mainstack = c->mainstack;
283	PL_stack_sp = c->stack_sp;
284	PL_op = c->op;
285	PL_curpad = c->curpad;
286	PL_comppad = c->comppad;
287	PL_compcv = c->compcv;
288	PL_stack_base = c->stack_base;
289	PL_stack_max = c->stack_max;
290	PL_tmps_stack = c->tmps_stack;
291	PL_tmps_floor = c->tmps_floor;
292	PL_tmps_ix = c->tmps_ix;
293	PL_tmps_max = c->tmps_max;
294	PL_markstack = c->markstack;
295	PL_markstack_ptr = c->markstack_ptr;
296	PL_markstack_max = c->markstack_max;
297	PL_scopestack = c->scopestack;
298	PL_scopestack_ix = c->scopestack_ix;
299	PL_scopestack_max = c->scopestack_max;
300	PL_savestack = c->savestack;
301	PL_savestack_ix = c->savestack_ix;
302	PL_savestack_max = c->savestack_max;
303	#if PERL_VERSION < 9
304	PL_retstack = c->retstack;
305	PL_retstack_ix = c->retstack_ix;
306	PL_retstack_max = c->retstack_max;
307	#endif
308	PL_curpm = c->curpm;
309	PL_curcop = c->curcop;
310		305
311	if (c->defav) REPLACE_SV (GvAV (PL_defgv), c->defav);	306	if (c->defav) REPLACE_SV (GvAV (PL_defgv), c->defav);
312	if (c->defsv) REPLACE_SV (DEFSV , c->defsv);	307	if (c->defsv) REPLACE_SV (DEFSV , c->defsv);
313	if (c->errsv) REPLACE_SV (ERRSV , c->errsv);	308	if (c->errsv) REPLACE_SV (ERRSV , c->errsv);
314		309
…		…
317	CV *cv;	312	CV *cv;
318		313
319	/* now do the ugly restore mess */	314	/* now do the ugly restore mess */
320	while ((cv = (CV *)POPs))	315	while ((cv = (CV *)POPs))
321	{	316	{
322	AV padlist = (AV )POPs;
323
324	if (padlist)
325	{
326	put_padlist (aTHX_ cv); /* mark this padlist as available */	317	put_padlist (cv); /* mark this padlist as available */
327	CvPADLIST(cv) = padlist;	318	CvDEPTH (cv) = PTR2IV (POPs);
328	}	319	CvPADLIST (cv) = (AV *)POPs;
329
330	++CvDEPTH(cv);
331	}	320	}
332		321
333	PUTBACK;	322	PUTBACK;
334	}	323	}
335	}	324	}
336		325
337	static void	326	static void
338	save_state(pTHX_ Coro__State c, int flags)	327	save_state (Coro__State c, int flags)
339	{	328	{
340	{	329	{
341	dSP;	330	dSP;
342	I32 cxix = cxstack_ix;	331	I32 cxix = cxstack_ix;
343	PERL_CONTEXT *ccstk = cxstack;	332	PERL_CONTEXT *ccstk = cxstack;
…		…
354	{	343	{
355	while (cxix >= 0)	344	while (cxix >= 0)
356	{	345	{
357	PERL_CONTEXT *cx = &ccstk[cxix--];	346	PERL_CONTEXT *cx = &ccstk[cxix--];
358		347
359	if (CxTYPE(cx) == CXt_SUB)	348	if (CxTYPE (cx) == CXt_SUB)
360	{	349	{
361	CV *cv = cx->blk_sub.cv;	350	CV *cv = cx->blk_sub.cv;
		351
362	if (CvDEPTH(cv))	352	if (CvDEPTH (cv))
363	{	353	{
364	EXTEND (SP, CvDEPTH(cv)*2);	354	EXTEND (SP, 3);
365		355
366	while (--CvDEPTH(cv))
367	{
368	/* this tells the restore code to increment CvDEPTH */
369	PUSHs (Nullsv);
370	PUSHs ((SV *)cv);
371	}
372
373	PUSHs ((SV *)CvPADLIST(cv));	356	PUSHs ((SV *)CvPADLIST (cv));
		357	PUSHs (INT2PTR (SV *, CvDEPTH (cv)));
374	PUSHs ((SV *)cv);	358	PUSHs ((SV *)cv);
375		359
		360	CvDEPTH (cv) = 0;
376	get_padlist (aTHX_ cv);	361	get_padlist (cv);
377	}	362	}
378	}	363	}
379	#ifdef CXt_FORMAT	364	#ifdef CXt_FORMAT
380	else if (CxTYPE(cx) == CXt_FORMAT)	365	else if (CxTYPE (cx) == CXt_FORMAT)
381	{	366	{
382	/* I never used formats, so how should I know how these are implemented? */	367	/* I never used formats, so how should I know how these are implemented? */
383	/* my bold guess is as a simple, plain sub... */	368	/* my bold guess is as a simple, plain sub... */
384	croak ("CXt_FORMAT not yet handled. Don't switch coroutines from within formats");	369	croak ("CXt_FORMAT not yet handled. Don't switch coroutines from within formats");
385	}	370	}
…		…
399		384
400	c->defav = flags & TRANSFER_SAVE_DEFAV ? (AV *)SvREFCNT_inc (GvAV (PL_defgv)) : 0;	385	c->defav = flags & TRANSFER_SAVE_DEFAV ? (AV *)SvREFCNT_inc (GvAV (PL_defgv)) : 0;
401	c->defsv = flags & TRANSFER_SAVE_DEFSV ? SvREFCNT_inc (DEFSV) : 0;	386	c->defsv = flags & TRANSFER_SAVE_DEFSV ? SvREFCNT_inc (DEFSV) : 0;
402	c->errsv = flags & TRANSFER_SAVE_ERRSV ? SvREFCNT_inc (ERRSV) : 0;	387	c->errsv = flags & TRANSFER_SAVE_ERRSV ? SvREFCNT_inc (ERRSV) : 0;
403		388
404	c->dowarn = PL_dowarn;	389	#define VAR(name,type)c->name = PL_ ## name;
405	c->in_eval = PL_in_eval;	390	# include "state.h"
406		391	#undef VAR
407	c->curstackinfo = PL_curstackinfo;
408	c->curstack = PL_curstack;
409	c->mainstack = PL_mainstack;
410	c->stack_sp = PL_stack_sp;
411	c->op = PL_op;
412	c->curpad = PL_curpad;
413	c->comppad = PL_comppad;
414	c->compcv = PL_compcv;
415	c->stack_base = PL_stack_base;
416	c->stack_max = PL_stack_max;
417	c->tmps_stack = PL_tmps_stack;
418	c->tmps_floor = PL_tmps_floor;
419	c->tmps_ix = PL_tmps_ix;
420	c->tmps_max = PL_tmps_max;
421	c->markstack = PL_markstack;
422	c->markstack_ptr = PL_markstack_ptr;
423	c->markstack_max = PL_markstack_max;
424	c->scopestack = PL_scopestack;
425	c->scopestack_ix = PL_scopestack_ix;
426	c->scopestack_max = PL_scopestack_max;
427	c->savestack = PL_savestack;
428	c->savestack_ix = PL_savestack_ix;
429	c->savestack_max = PL_savestack_max;
430	#if PERL_VERSION < 9
431	c->retstack = PL_retstack;
432	c->retstack_ix = PL_retstack_ix;
433	c->retstack_max = PL_retstack_max;
434	#endif
435	c->curpm = PL_curpm;
436	c->curcop = PL_curcop;
437	}	392	}
438		393
439	/*	394	/*
440	* allocate various perl stacks. This is an exact copy	395	* allocate various perl stacks. This is an exact copy
441	* of perl.c:init_stacks, except that it uses less memory	396	* of perl.c:init_stacks, except that it uses less memory
442	* on the (sometimes correct) assumption that coroutines do	397	* on the (sometimes correct) assumption that coroutines do
443	* not usually need a lot of stackspace.	398	* not usually need a lot of stackspace.
444	*/	399	*/
445	static void	400	static void
446	coro_init_stacks (pTHX)	401	coro_init_stacks ()
447	{	402	{
448	LOCK;
449
450	PL_curstackinfo = new_stackinfo(96, 1024/sizeof(PERL_CONTEXT) - 1);	403	PL_curstackinfo = new_stackinfo(128, 1024/sizeof(PERL_CONTEXT));
451	PL_curstackinfo->si_type = PERLSI_MAIN;	404	PL_curstackinfo->si_type = PERLSI_MAIN;
452	PL_curstack = PL_curstackinfo->si_stack;	405	PL_curstack = PL_curstackinfo->si_stack;
453	PL_mainstack = PL_curstack; /* remember in case we switch stacks */	406	PL_mainstack = PL_curstack; /* remember in case we switch stacks */
454		407
455	PL_stack_base = AvARRAY(PL_curstack);	408	PL_stack_base = AvARRAY(PL_curstack);
456	PL_stack_sp = PL_stack_base;	409	PL_stack_sp = PL_stack_base;
457	PL_stack_max = PL_stack_base + AvMAX(PL_curstack);	410	PL_stack_max = PL_stack_base + AvMAX(PL_curstack);
458		411
459	New(50,PL_tmps_stack,96,SV*);	412	New(50,PL_tmps_stack,128,SV*);
460	PL_tmps_floor = -1;	413	PL_tmps_floor = -1;
461	PL_tmps_ix = -1;	414	PL_tmps_ix = -1;
462	PL_tmps_max = 96;	415	PL_tmps_max = 128;
463		416
464	New(54,PL_markstack,16,I32);	417	New(54,PL_markstack,32,I32);
465	PL_markstack_ptr = PL_markstack;	418	PL_markstack_ptr = PL_markstack;
466	PL_markstack_max = PL_markstack + 16;	419	PL_markstack_max = PL_markstack + 32;
467		420
468	#ifdef SET_MARK_OFFSET	421	#ifdef SET_MARK_OFFSET
469	SET_MARK_OFFSET;	422	SET_MARK_OFFSET;
470	#endif	423	#endif
471		424
472	New(54,PL_scopestack,16,I32);	425	New(54,PL_scopestack,32,I32);
473	PL_scopestack_ix = 0;	426	PL_scopestack_ix = 0;
474	PL_scopestack_max = 16;	427	PL_scopestack_max = 32;
475		428
476	New(54,PL_savestack,96,ANY);	429	New(54,PL_savestack,64,ANY);
477	PL_savestack_ix = 0;	430	PL_savestack_ix = 0;
478	PL_savestack_max = 96;	431	PL_savestack_max = 64;
479		432
480	#if PERL_VERSION < 9	433	#if !PERL_VERSION_ATLEAST (5,9,0)
481	New(54,PL_retstack,8,OP*);	434	New(54,PL_retstack,16,OP*);
482	PL_retstack_ix = 0;	435	PL_retstack_ix = 0;
483	PL_retstack_max = 8;	436	PL_retstack_max = 16;
484	#endif	437	#endif
485
486	UNLOCK;
487	}	438	}
488		439
489	/*	440	/*
490	* destroy the stacks, the callchain etc...	441	* destroy the stacks, the callchain etc...
491	*/	442	*/
492	static void	443	static void
493	destroy_stacks(pTHX)	444	coro_destroy_stacks ()
494	{	445	{
495	if (!IN_DESTRUCT)	446	if (!IN_DESTRUCT)
496	{	447	{
497	/* is this ugly, I ask? */	448	/* is this ugly, I ask? */
498	LEAVE_SCOPE (0);	449	LEAVE_SCOPE (0);
…		…
529		480
530	Safefree (PL_tmps_stack);	481	Safefree (PL_tmps_stack);
531	Safefree (PL_markstack);	482	Safefree (PL_markstack);
532	Safefree (PL_scopestack);	483	Safefree (PL_scopestack);
533	Safefree (PL_savestack);	484	Safefree (PL_savestack);
534	#if PERL_VERSION < 9	485	#if !PERL_VERSION_ATLEAST (5,9,0)
535	Safefree (PL_retstack);	486	Safefree (PL_retstack);
536	#endif	487	#endif
537	}	488	}
538		489
539	static void	490	static void
540	setup_coro (struct coro *coro)	491	setup_coro (struct coro *coro)
541	{	492	{
542	/*	493	/*
543	* emulate part of the perl startup here.	494	* emulate part of the perl startup here.
544	*/	495	*/
545	dTHX;
546	dSP;
547	UNOP myop;
548	SV sub_init = (SV )get_cv ("Coro::State::coro_init", FALSE);
549		496
550	coro_init_stacks (aTHX);	497	coro_init_stacks ();
551	/PL_curcop = 0;/	498
552	/PL_in_eval = PL_in_eval;/ /* inherit */	499	PL_curcop = &PL_compiling;
		500	PL_in_eval = EVAL_NULL;
		501	PL_curpm = 0;
		502	PL_localizing = 0;
		503	PL_dirty = 0;
		504	PL_restartop = 0;
		505
		506	{
		507	dSP;
		508	LOGOP myop;
		509
553	SvREFCNT_dec (GvAV (PL_defgv));	510	SvREFCNT_dec (GvAV (PL_defgv));
554	GvAV (PL_defgv) = coro->args; coro->args = 0;	511	GvAV (PL_defgv) = coro->args; coro->args = 0;
555		512
556	SPAGAIN;
557
558	Zero (&myop, 1, UNOP);	513	Zero (&myop, 1, LOGOP);
559	myop.op_next = Nullop;	514	myop.op_next = Nullop;
560	myop.op_flags = OPf_WANT_VOID;	515	myop.op_flags = OPf_WANT_VOID;
561		516
		517	PUSHMARK (SP);
		518	XPUSHs ((SV *)get_cv ("Coro::State::_coro_init", FALSE));
		519	PUTBACK;
562	PL_op = (OP *)&myop;	520	PL_op = (OP *)&myop;
563
564	PUSHMARK(SP);
565	XPUSHs (sub_init);
566	PUTBACK;
567	PL_op = PL_ppaddr[OP_ENTERSUB](aTHX);	521	PL_op = PL_ppaddr[OP_ENTERSUB](aTHX);
568	SPAGAIN;	522	SPAGAIN;
		523	}
569		524
570	ENTER; /* necessary e.g. for dounwind */	525	ENTER; /* necessary e.g. for dounwind */
571	}	526	}
572		527
573	static void	528	static void
…		…
578	SvREFCNT_dec (coro_mortal);	533	SvREFCNT_dec (coro_mortal);
579	coro_mortal = 0;	534	coro_mortal = 0;
580	}	535	}
581	}	536	}
582		537
		538	/* inject a fake call to Coro::State::_cctx_init into the execution */
		539	static void NOINLINE
		540	prepare_cctx (coro_cctx *cctx)
		541	{
		542	dSP;
		543	LOGOP myop;
		544
		545	Zero (&myop, 1, LOGOP);
		546	myop.op_next = PL_op;
		547	myop.op_flags = OPf_WANT_VOID \| OPf_STACKED;
		548
		549	PUSHMARK (SP);
		550	EXTEND (SP, 2);
		551	PUSHs (sv_2mortal (newSViv (PTR2IV (cctx))));
		552	PUSHs ((SV *)get_cv ("Coro::State::_cctx_init", FALSE));
		553	PUTBACK;
		554	PL_op = (OP *)&myop;
		555	PL_op = PL_ppaddr[OP_ENTERSUB](aTHX);
		556	SPAGAIN;
		557	}
		558
583	static void	559	static void
584	coro_run (void *arg)	560	coro_run (void *arg)
585	{	561	{
		562	/* coro_run is the alternative tail of transfer(), so unlock here. */
		563	UNLOCK;
		564
586	/*	565	/*
587	* this is a _very_ stripped down perl interpreter ;)	566	* this is a _very_ stripped down perl interpreter ;)
588	*/	567	*/
589	dTHX;
590
591	UNLOCK;
592
593	PL_top_env = &PL_start_env;	568	PL_top_env = &PL_start_env;
594		569
595	sv_setiv (get_sv ("Coro::State::cctx_stack", FALSE), PTR2IV ((coro_stack *)arg));	570	/* inject call to cctx_init */
596	sv_setiv (get_sv ("Coro::State::cctx_restartop", FALSE), PTR2IV (PL_op));	571	prepare_cctx ((coro_cctx *)arg);
597		572
598	/* continue at cctx_init, without entersub */
599	PL_restartop = CvSTART (get_cv ("Coro::State::cctx_init", FALSE));
600
601	/* somebody will hit me for both perl_run and PL_restart_op */	573	/* somebody will hit me for both perl_run and PL_restartop */
602	perl_run (aTHX_ PERL_GET_CONTEXT);	574	PL_restartop = PL_op;
		575	perl_run (PL_curinterp);
603		576
		577	fputs ("FATAL: C coroutine fell over the edge of the world, aborting. Did you call exit in a coroutine?\n", stderr);
604	abort ();	578	abort ();
605	}	579	}
606		580
607	static coro_stack *	581	static coro_cctx *
608	stack_new ()	582	cctx_new ()
609	{	583	{
610	coro_stack *stack;	584	coro_cctx *cctx;
611		585
		586	++cctx_count;
		587
612	New (0, stack, 1, coro_stack);	588	New (0, cctx, 1, coro_cctx);
613		589
614	#if HAVE_MMAP	590	#if HAVE_MMAP
615		591
616	stack->ssize = ((STACKSIZE * sizeof (long) + PAGESIZE - 1) / PAGESIZE + STACKGUARD) * PAGESIZE; /* mmap should do allocate-on-write for us */	592	cctx->ssize = ((STACKSIZE * sizeof (long) + PAGESIZE - 1) / PAGESIZE + STACKGUARD) * PAGESIZE;
		593	/* mmap supposedly does allocate-on-write for us */
617	stack->sptr = mmap (0, stack->ssize, PROT_EXEC\|PROT_READ\|PROT_WRITE, MAP_PRIVATE\|MAP_ANONYMOUS, 0, 0);	594	cctx->sptr = mmap (0, cctx->ssize, PROT_EXEC\|PROT_READ\|PROT_WRITE, MAP_PRIVATE\|MAP_ANONYMOUS, 0, 0);
618		595
619	if (stack->sptr == (void *)-1)	596	if (cctx->sptr == (void *)-1)
620	{	597	{
621	perror ("FATAL: unable to mmap stack for coroutine");	598	perror ("FATAL: unable to mmap stack for coroutine");
622	_exit (EXIT_FAILURE);	599	_exit (EXIT_FAILURE);
623	}	600	}
624		601
		602	# if STACKGUARD
625	mprotect (stack->sptr, STACKGUARD * PAGESIZE, PROT_NONE);	603	mprotect (cctx->sptr, STACKGUARD * PAGESIZE, PROT_NONE);
		604	# endif
626		605
627	#else	606	#else
628		607
629	stack->ssize = STACKSIZE * (long)sizeof (long);	608	cctx->ssize = STACKSIZE * (long)sizeof (long);
630	New (0, stack->sptr, STACKSIZE, long);	609	New (0, cctx->sptr, STACKSIZE, long);
631		610
632	if (!stack->sptr)	611	if (!cctx->sptr)
633	{	612	{
634	perror (stderr, "FATAL: unable to malloc stack for coroutine");	613	perror ("FATAL: unable to malloc stack for coroutine");
635	_exit (EXIT_FAILURE);	614	_exit (EXIT_FAILURE);
636	}	615	}
637		616
638	#endif	617	#endif
639		618
		619	#if USE_VALGRIND
		620	cctx->valgrind_id = VALGRIND_STACK_REGISTER (
		621	STACKGUARD * PAGESIZE + (char *)cctx->sptr,
		622	cctx->ssize + (char *)cctx->sptr
		623	);
		624	#endif
		625
640	coro_create (&stack->cctx, coro_run, (void *)stack, stack->sptr, stack->ssize);	626	coro_create (&cctx->cctx, coro_run, (void *)cctx, cctx->sptr, cctx->ssize);
641		627
642	return stack;	628	return cctx;
643	}	629	}
644		630
645	static void	631	static void
646	stack_free (coro_stack *stack)	632	cctx_destroy (coro_cctx *cctx)
647	{	633	{
648	if (!stack \|\| stack == main_stack)	634	if (!cctx)
649	return;	635	return;
650		636
		637	--cctx_count;
		638
		639	#if USE_VALGRIND
		640	VALGRIND_STACK_DEREGISTER (cctx->valgrind_id);
		641	#endif
		642
651	#if HAVE_MMAP	643	#if HAVE_MMAP
652	munmap (stack->sptr, stack->ssize);	644	munmap (cctx->sptr, cctx->ssize);
653	#else	645	#else
654	Safefree (stack->sptr);	646	Safefree (cctx->sptr);
655	#endif	647	#endif
656		648
657	Safefree (stack);	649	Safefree (cctx);
658	}	650	}
659		651
660	static coro_stack *stack_first;
661
662	static coro_stack *	652	static coro_cctx *
663	stack_get ()	653	cctx_get ()
664	{	654	{
665	coro_stack *stack;	655	coro_cctx *cctx;
666		656
667	if (stack_first)	657	if (cctx_first)
668	{	658	{
669	stack = stack_first;	659	cctx = cctx_first;
670	stack_first = stack->next;	660	cctx_first = cctx->next;
		661	--cctx_idle;
671	}	662	}
672	else	663	else
673	{	664	{
674	stack = stack_new ();	665	cctx = cctx_new ();
675	PL_op = PL_op->op_next;	666	PL_op = PL_op->op_next;
676	}	667	}
677		668
678	return stack;	669	return cctx;
679	}	670	}
680		671
681	static void	672	static void
682	stack_put (coro_stack *stack)	673	cctx_put (coro_cctx *cctx)
683	{	674	{
684	stack->next = stack_first;	675	/* free another cctx if overlimit */
685	stack_first = stack;	676	if (cctx_idle >= MAX_IDLE_CCTX)
		677	{
		678	coro_cctx *first = cctx_first;
		679	cctx_first = first->next;
		680	--cctx_idle;
		681
		682	assert (!first->inuse);
		683	cctx_destroy (first);
		684	}
		685
		686	++cctx_idle;
		687	cctx->next = cctx_first;
		688	cctx_first = cctx;
686	}	689	}
687		690
688	/* never call directly, always through the coro_state_transfer global variable */	691	/* never call directly, always through the coro_state_transfer global variable */
689	static void	692	static void NOINLINE
690	transfer_impl (pTHX_ struct coro prev, struct coro next, int flags)	693	transfer (struct coro prev, struct coro next, int flags)
691	{	694	{
692	dSTACKLEVEL;	695	dSTACKLEVEL;
693		696
694	/* sometimes transfer is only called to set idle_sp */	697	/* sometimes transfer is only called to set idle_sp */
695	if (flags == TRANSFER_SET_STACKLEVEL)	698	if (flags == TRANSFER_SET_STACKLEVEL)
696	((coro_stack *)prev)->idle_sp = STACKLEVEL;	699	((coro_cctx *)prev)->idle_sp = STACKLEVEL;
697	else if (prev != next)	700	else if (prev != next)
698	{	701	{
699	coro_stack *prev__stack;	702	coro_cctx *prev__cctx;
		703
		704	if (prev->flags & CF_NEW)
		705	{
		706	/* create a new empty context */
		707	Newz (0, prev->cctx, 1, coro_cctx);
		708	prev->cctx->inuse = 1;
		709	prev->flags &= ~CF_NEW;
		710	prev->flags \|= CF_RUNNING;
		711	}
		712
		713	/TODO: must not croak here /
		714	if (!prev->flags & CF_RUNNING)
		715	croak ("Coro::State::transfer called with non-running prev Coro::State, but can only transfer from running states");
		716
		717	if (next->flags & CF_RUNNING)
		718	croak ("Coro::State::transfer called with running next Coro::State, but can only transfer to inactive states");
		719
		720	prev->flags &= ~CF_RUNNING;
		721	next->flags \|= CF_RUNNING;
700		722
701	LOCK;	723	LOCK;
702		724
703	if (next->mainstack)	725	if (next->flags & CF_NEW)
		726	{
		727	/* need to start coroutine */
		728	next->flags &= ~CF_NEW;
		729	/* first get rid of the old state */
		730	SAVE (prev, -1);
		731	/* setup coroutine call */
		732	setup_coro (next);
		733	/* need a new stack */
		734	assert (!next->stack);
		735	}
		736	else
704	{	737	{
705	/* coroutine already started */	738	/* coroutine already started */
706	SAVE (prev, flags);	739	SAVE (prev, flags);
707	LOAD (next);	740	LOAD (next);
708	}	741	}
709	else	742
		743	prev__cctx = prev->cctx;
		744
		745	/* possibly "free" the cctx */
		746	if (prev__cctx->idle_sp == STACKLEVEL)
710	{	747	{
711	/* need to start coroutine */	748	/* I assume that STACKLEVEL is a stronger indicator than PL_top_env changes */
712	/* first get rid of the old state */	749	assert (PL_top_env == prev__cctx->top_env);
713	SAVE (prev, -1);	750
714	/* setup coroutine call */	751	prev->cctx = 0;
715	setup_coro (next);	752
716	/* need a stack */	753	cctx_put (prev__cctx);
717	next->stack = 0;	754	prev__cctx->inuse = 0;
718	}	755	}
719		756
720	prev__stack = prev->stack;	757	if (!next->cctx)
721
722	/* possibly "free" the stack */
723	if (prev__stack->idle_sp == STACKLEVEL)
724	{	758	{
725	stack_put (prev__stack);	759	next->cctx = cctx_get ();
726	prev->stack = 0;	760	assert (!next->cctx->inuse);
		761	next->cctx->inuse = 1;
727	}	762	}
728		763
729	if (!next->stack)
730	next->stack = stack_get ();
731
732	if (prev__stack != next->stack)	764	if (prev__cctx != next->cctx)
733	{	765	{
734	prev__stack->top_env = PL_top_env;	766	prev__cctx->top_env = PL_top_env;
735	PL_top_env = next->stack->top_env;	767	PL_top_env = next->cctx->top_env;
736	coro_transfer (&prev__stack->cctx, &next->stack->cctx);	768	coro_transfer (&prev__cctx->cctx, &next->cctx->cctx);
737	}	769	}
738		770
739	free_coro_mortal ();	771	free_coro_mortal ();
740		772
741	UNLOCK;	773	UNLOCK;
742	}	774	}
743	}	775	}
744
745	/* use this function pointer to call the above function */
746	/* this is done to increase chances of the compiler not inlining the call */
747	/* not static to make it even harder for the compiler (and theoretically impossible in most cases */
748	void (coro_state_transfer)(pTHX_ struct coro prev, struct coro *next, int flags) = transfer_impl;
749		776
750	struct transfer_args	777	struct transfer_args
751	{	778	{
752	struct coro prev, next;	779	struct coro prev, next;
753	int flags;	780	int flags;
754	};	781	};
755		782
756	#define TRANSFER(ta) coro_state_transfer ((ta).prev, (ta).next, (ta).flags)	783	#define TRANSFER(ta) transfer ((ta).prev, (ta).next, (ta).flags)
757		784
758	static void	785	static void
759	coro_state_destroy (struct coro *coro)	786	coro_state_destroy (struct coro *coro)
760	{	787	{
761	if (coro->refcnt--)	788	if (coro->refcnt--)
…		…
763		790
764	if (coro->mainstack && coro->mainstack != main_mainstack)	791	if (coro->mainstack && coro->mainstack != main_mainstack)
765	{	792	{
766	struct coro temp;	793	struct coro temp;
767		794
		795	if (coro->flags & CF_RUNNING)
		796	croak ("FATAL: tried to destroy currently running coroutine");
		797
768	SAVE (aTHX_ (&temp), TRANSFER_SAVE_ALL);	798	SAVE ((&temp), TRANSFER_SAVE_ALL);
769	LOAD (aTHX_ coro);	799	LOAD (coro);
770		800
771	destroy_stacks (aTHX);	801	coro_destroy_stacks ();
772		802
773	LOAD ((&temp)); /* this will get rid of defsv etc.. */	803	LOAD ((&temp)); /* this will get rid of defsv etc.. */
774		804
775	coro->mainstack = 0;	805	coro->mainstack = 0;
776	}	806	}
777		807
778	stack_free (coro->stack);	808	cctx_destroy (coro->cctx);
779	SvREFCNT_dec (coro->args);	809	SvREFCNT_dec (coro->args);
780	Safefree (coro);	810	Safefree (coro);
781	}	811	}
782		812
783	static int	813	static int
784	coro_state_clear (SV sv, MAGIC mg)	814	coro_state_clear (pTHX_ SV sv, MAGIC mg)
785	{	815	{
786	struct coro coro = (struct coro )mg->mg_ptr;	816	struct coro coro = (struct coro )mg->mg_ptr;
787	mg->mg_ptr = 0;	817	mg->mg_ptr = 0;
788		818
789	coro_state_destroy (coro);	819	coro_state_destroy (coro);
790		820
791	return 0;	821	return 0;
792	}	822	}
793		823
794	static int	824	static int
795	coro_state_dup (MAGIC mg, CLONE_PARAMS params)	825	coro_state_dup (pTHX_ MAGIC mg, CLONE_PARAMS params)
796	{	826	{
797	struct coro coro = (struct coro )mg->mg_ptr;	827	struct coro coro = (struct coro )mg->mg_ptr;
798		828
799	++coro->refcnt;	829	++coro->refcnt;
800		830
801	return 0;	831	return 0;
802	}	832	}
803		833
804	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	};
805		844
806	static struct coro *	845	static struct coro *
807	SvSTATE (SV *coro)	846	SvSTATE (SV *coro)
808	{	847	{
809	HV *stash;	848	HV *stash;
…		…
824	assert (mg->mg_type == PERL_MAGIC_ext);	863	assert (mg->mg_type == PERL_MAGIC_ext);
825	return (struct coro *)mg->mg_ptr;	864	return (struct coro *)mg->mg_ptr;
826	}	865	}
827		866
828	static void	867	static void
829	prepare_transfer (pTHX_ struct transfer_args ta, SV prev, SV *next, int flags)	868	prepare_transfer (struct transfer_args ta, SV prev, SV *next, int flags)
830	{	869	{
831	ta->prev = SvSTATE (prev);	870	ta->prev = SvSTATE (prev);
832	ta->next = SvSTATE (next);	871	ta->next = SvSTATE (next);
833	ta->flags = flags;	872	ta->flags = flags;
834	}	873	}
835		874
836	static void	875	static void
837	api_transfer (SV prev, SV next, int flags)	876	api_transfer (SV prev, SV next, int flags)
838	{	877	{
839	dTHX;
840	struct transfer_args ta;	878	struct transfer_args ta;
841		879
842	prepare_transfer (aTHX_ &ta, prev, next, flags);	880	prepare_transfer (&ta, prev, next, flags);
843	TRANSFER (ta);	881	TRANSFER (ta);
844	}	882	}
845		883
846	/ Coro ******************************************************************/	884	/ Coro ******************************************************************/
847		885
…		…
851	#define PRIO_LOW -1	889	#define PRIO_LOW -1
852	#define PRIO_IDLE -3	890	#define PRIO_IDLE -3
853	#define PRIO_MIN -4	891	#define PRIO_MIN -4
854		892
855	/* for Coro.pm */	893	/* for Coro.pm */
856	static GV coro_current, coro_idle;	894	static SV *coro_current;
857	static AV *coro_ready [PRIO_MAX-PRIO_MIN+1];	895	static AV *coro_ready [PRIO_MAX-PRIO_MIN+1];
858	static int coro_nready;	896	static int coro_nready;
859		897
860	static void	898	static void
861	coro_enq (pTHX_ SV *sv)	899	coro_enq (SV *coro_sv)
862	{	900	{
863	int prio;
864
865	if (SvTYPE (sv) != SVt_PVHV)
866	croak ("Coro::ready tried to enqueue something that is not a coroutine");
867
868	prio = SvSTATE (sv)->prio;
869
870	av_push (coro_ready [prio - PRIO_MIN], sv);	901	av_push (coro_ready [SvSTATE (coro_sv)->prio - PRIO_MIN], coro_sv);
871	coro_nready++;	902	coro_nready++;
872	}	903	}
873		904
874	static SV *	905	static SV *
875	coro_deq (pTHX_ int min_prio)	906	coro_deq (int min_prio)
876	{	907	{
877	int prio = PRIO_MAX - PRIO_MIN;	908	int prio = PRIO_MAX - PRIO_MIN;
878		909
879	min_prio -= PRIO_MIN;	910	min_prio -= PRIO_MIN;
880	if (min_prio < 0)	911	if (min_prio < 0)
…		…
888	}	919	}
889		920
890	return 0;	921	return 0;
891	}	922	}
892		923
893	static void	924	static int
894	api_ready (SV *coro)	925	api_ready (SV *coro_sv)
895	{	926	{
896	dTHX;	927	struct coro *coro;
897		928
898	if (SvROK (coro))	929	if (SvROK (coro_sv))
899	coro = SvRV (coro);	930	coro_sv = SvRV (coro_sv);
		931
		932	coro = SvSTATE (coro_sv);
		933
		934	if (coro->flags & CF_READY)
		935	return 0;
		936
		937	#if 0 /* this is actually harmless */
		938	if (coro->flags & CF_RUNNING)
		939	croak ("Coro::ready called on currently running coroutine");
		940	#endif
		941
		942	coro->flags \|= CF_READY;
900		943
901	LOCK;	944	LOCK;
902	coro_enq (aTHX_ SvREFCNT_inc (coro));	945	coro_enq (SvREFCNT_inc (coro_sv));
903	UNLOCK;	946	UNLOCK;
904	}
905		947
		948	return 1;
		949	}
		950
906	static void	951	static int
		952	api_is_ready (SV *coro_sv)
		953	{
		954	return !!SvSTATE (coro_sv)->flags & CF_READY;
		955	}
		956
		957	static void
907	prepare_schedule (aTHX_ struct transfer_args *ta)	958	prepare_schedule (struct transfer_args *ta)
908	{	959	{
909	SV current, prev, *next;	960	SV prev, next;
910
911	LOCK;
912
913	current = GvSV (coro_current);
914		961
915	for (;;)	962	for (;;)
916	{	963	{
917	LOCK;	964	LOCK;
918
919	next = coro_deq (aTHX_ PRIO_MIN);	965	next = coro_deq (PRIO_MIN);
		966	UNLOCK;
920		967
921	if (next)	968	if (next)
922	break;	969	break;
923		970
924	UNLOCK;
925
926	{	971	{
927	dSP;	972	dSP;
928		973
929	ENTER;	974	ENTER;
930	SAVETMPS;	975	SAVETMPS;
931		976
932	PUSHMARK (SP);	977	PUSHMARK (SP);
933	PUTBACK;	978	PUTBACK;
934	call_sv (GvSV (coro_idle), G_DISCARD);	979	call_sv (get_sv ("Coro::idle", FALSE), G_DISCARD);
935		980
936	FREETMPS;	981	FREETMPS;
937	LEAVE;	982	LEAVE;
938	}	983	}
939	}	984	}
940		985
941	prev = SvRV (current);	986	prev = SvRV (coro_current);
942	SvRV (current) = next;	987	SvRV_set (coro_current, next);
943		988
944	/* free this only after the transfer */	989	/* free this only after the transfer */
		990	LOCK;
945	free_coro_mortal ();	991	free_coro_mortal ();
		992	UNLOCK;
946	coro_mortal = prev;	993	coro_mortal = prev;
947		994
		995	assert (!SvROK(prev));//D
		996	assert (!SvROK(next));//D
		997
948	ta->prev = SvSTATE (prev);	998	ta->prev = SvSTATE (prev);
949	ta->next = SvSTATE (next);	999	ta->next = SvSTATE (next);
950	ta->flags = TRANSFER_SAVE_ALL;	1000	ta->flags = TRANSFER_SAVE_ALL;
951		1001
952	UNLOCK;	1002	assert (ta->flags & CF_READY);
		1003	ta->next->flags &= ~CF_READY;
953	}	1004	}
954		1005
955	static void	1006	static void
956	prepare_cede (aTHX_ struct transfer_args *ta)	1007	prepare_cede (struct transfer_args *ta)
957	{	1008	{
958	LOCK;	1009	api_ready (coro_current);
959	coro_enq (aTHX_ SvREFCNT_inc (SvRV (GvSV (coro_current))));
960	UNLOCK;
961		1010
962	prepare_schedule (ta);	1011	prepare_schedule (ta);
963	}	1012	}
964		1013
965	static void	1014	static void
966	api_schedule (void)	1015	api_schedule (void)
967	{	1016	{
968	dTHX;
969	struct transfer_args ta;	1017	struct transfer_args ta;
970		1018
971	prepare_schedule (&ta);	1019	prepare_schedule (&ta);
972	TRANSFER (ta);	1020	TRANSFER (ta);
973	}	1021	}
974		1022
975	static void	1023	static void
976	api_cede (void)	1024	api_cede (void)
977	{	1025	{
978	dTHX;
979	struct transfer_args ta;	1026	struct transfer_args ta;
980		1027
981	prepare_cede (&ta);	1028	prepare_cede (&ta);
982	TRANSFER (ta);	1029	TRANSFER (ta);
983	}	1030	}
…		…
1002	main_mainstack = PL_mainstack;	1049	main_mainstack = PL_mainstack;
1003		1050
1004	coroapi.ver = CORO_API_VERSION;	1051	coroapi.ver = CORO_API_VERSION;
1005	coroapi.transfer = api_transfer;	1052	coroapi.transfer = api_transfer;
1006		1053
1007	Newz (0, main_stack, 1, coro_stack);
1008	main_stack->idle_sp = (void *)-1;
1009
1010	assert (("PRIO_NORMAL must be 0", !PRIO_NORMAL));	1054	assert (("PRIO_NORMAL must be 0", !PRIO_NORMAL));
1011	}	1055	}
1012		1056
1013	SV *	1057	SV *
1014	new (char *klass, ...)	1058	new (char *klass, ...)
…		…
1018	HV *hv;	1062	HV *hv;
1019	int i;	1063	int i;
1020		1064
1021	Newz (0, coro, 1, struct coro);	1065	Newz (0, coro, 1, struct coro);
1022	coro->args = newAV ();	1066	coro->args = newAV ();
		1067	coro->flags = CF_NEW;
1023		1068
1024	hv = newHV ();	1069	hv = newHV ();
1025	sv_magicext ((SV )hv, 0, PERL_MAGIC_ext, &coro_state_vtbl, (char )coro, 0)->mg_flags \|= MGf_DUP;	1070	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));	1071	RETVAL = sv_bless (newRV_noinc ((SV *)hv), gv_stashpv (klass, 1));
1027		1072
1028	for (i = 1; i < items; i++)	1073	for (i = 1; i < items; i++)
1029	av_push (coro->args, newSVsv (ST (i)));	1074	av_push (coro->args, newSVsv (ST (i)));
1030
1031	coro->stack = main_stack;
1032	/coro->mainstack = 0; //actual work is done inside transfer /
1033	/coro->stack = 0;/
1034	}	1075	}
1035	OUTPUT:	1076	OUTPUT:
1036	RETVAL	1077	RETVAL
1037		1078
1038	void	1079	void
1039	transfer (...)	1080	_set_stacklevel (...)
1040	ALIAS:	1081	ALIAS:
1041	Coro::schedule = 1	1082	Coro::State::transfer = 1
1042	Coro::cede = 2	1083	Coro::schedule = 2
1043	_set_stacklevel = 3	1084	Coro::cede = 3
1044	CODE:	1085	CODE:
1045	{	1086	{
1046	struct transfer_args ta;	1087	struct transfer_args ta;
1047		1088
1048	switch (ix)	1089	switch (ix)
1049	{	1090	{
1050	case 0:	1091	case 0:
1051	if (items != 3)
1052	croak ("Coro::State::transfer(prev,next,flags) expects three arguments, not %d", items);
1053
1054	prepare_transfer (&ta, ST (0), ST (1), SvIV (ST (2)));
1055	break;
1056
1057	case 1:
1058	prepare_schedule (&ta);
1059	break;
1060
1061	case 2:
1062	prepare_cede (&ta);
1063	break;
1064
1065	case 3:
1066	ta.prev = (struct coro )INT2PTR (coro_stack , SvIV (ST (0)));	1092	ta.prev = (struct coro )INT2PTR (coro_cctx , SvIV (ST (0)));
1067	ta.next = 0;	1093	ta.next = 0;
1068	ta.flags = TRANSFER_SET_STACKLEVEL;	1094	ta.flags = TRANSFER_SET_STACKLEVEL;
1069	break;	1095	break;
		1096
		1097	case 1:
		1098	if (items != 3)
		1099	croak ("Coro::State::transfer (prev,next,flags) expects three arguments, not %d", items);
		1100
		1101	prepare_transfer (&ta, ST (0), ST (1), SvIV (ST (2)));
		1102	break;
		1103
		1104	case 2:
		1105	prepare_schedule (&ta);
		1106	break;
		1107
		1108	case 3:
		1109	prepare_cede (&ta);
		1110	break;
1070	}	1111	}
1071		1112
1072	TRANSFER (ta);	1113	TRANSFER (ta);
1073	}	1114	}
1074		1115
…		…
1081	sv_unmagic (SvRV (dst), PERL_MAGIC_ext);	1122	sv_unmagic (SvRV (dst), PERL_MAGIC_ext);
1082		1123
1083	++coro_src->refcnt;	1124	++coro_src->refcnt;
1084	sv_magicext (SvRV (dst), 0, PERL_MAGIC_ext, &coro_state_vtbl, (char *)coro_src, 0)->mg_flags \|= MGf_DUP;	1125	sv_magicext (SvRV (dst), 0, PERL_MAGIC_ext, &coro_state_vtbl, (char *)coro_src, 0)->mg_flags \|= MGf_DUP;
1085	}	1126	}
1086
1087	void
1088	_nonlocal_goto (IV nextop)
1089	CODE:
1090	/* uuh, somebody will kill me again for this */
1091	PL_op->op_next = INT2PTR (OP *, nextop);
1092		1127
1093	void	1128	void
1094	_exit (code)	1129	_exit (code)
1095	int code	1130	int code
1096	PROTOTYPE: $	1131	PROTOTYPE: $
1097	CODE:	1132	CODE:
1098	_exit (code);	1133	_exit (code);
1099		1134
1100	MODULE = Coro::State PACKAGE = Coro::Cont	1135	int
		1136	cctx_count ()
		1137	CODE:
		1138	RETVAL = cctx_count;
		1139	OUTPUT:
		1140	RETVAL
1101		1141
1102	void	1142	int
1103	yield (...)	1143	cctx_idle ()
1104	PROTOTYPE: @	1144	CODE:
1105	CODE:	1145	RETVAL = cctx_idle;
1106	{	1146	OUTPUT:
1107	SV *yieldstack;	1147	RETVAL
1108	SV *sv;
1109	AV *defav = GvAV (PL_defgv);
1110	struct coro prev, next;
1111
1112	yieldstack = *hv_fetch (
1113	(HV *)SvRV (GvSV (coro_current)),
1114	"yieldstack", sizeof ("yieldstack") - 1,
1115	0
1116	);
1117
1118	/* set up @_ -- ugly */
1119	av_clear (defav);
1120	av_fill (defav, items - 1);
1121	while (items--)
1122	av_store (defav, items, SvREFCNT_inc (ST(items)));
1123
1124	sv = av_pop ((AV *)SvRV (yieldstack));
1125	prev = SvSTATE (av_fetch ((AV )SvRV (sv), 0, 0));
1126	next = SvSTATE (av_fetch ((AV )SvRV (sv), 1, 0));
1127	SvREFCNT_dec (sv);
1128
1129	coro_state_transfer (aTHX_ prev, next, 0);
1130	}
1131		1148
1132	MODULE = Coro::State PACKAGE = Coro	1149	MODULE = Coro::State PACKAGE = Coro
1133		1150
1134	BOOT:	1151	BOOT:
1135	{	1152	{
…		…
1142	newCONSTSUB (coro_stash, "PRIO_NORMAL", newSViv (PRIO_NORMAL));	1159	newCONSTSUB (coro_stash, "PRIO_NORMAL", newSViv (PRIO_NORMAL));
1143	newCONSTSUB (coro_stash, "PRIO_LOW", newSViv (PRIO_LOW));	1160	newCONSTSUB (coro_stash, "PRIO_LOW", newSViv (PRIO_LOW));
1144	newCONSTSUB (coro_stash, "PRIO_IDLE", newSViv (PRIO_IDLE));	1161	newCONSTSUB (coro_stash, "PRIO_IDLE", newSViv (PRIO_IDLE));
1145	newCONSTSUB (coro_stash, "PRIO_MIN", newSViv (PRIO_MIN));	1162	newCONSTSUB (coro_stash, "PRIO_MIN", newSViv (PRIO_MIN));
1146		1163
1147	coro_current = gv_fetchpv ("Coro::current", TRUE, SVt_PV);	1164	coro_current = get_sv ("Coro::current", FALSE);
1148	coro_idle = gv_fetchpv ("Coro::idle" , TRUE, SVt_PV);	1165	SvREADONLY_on (coro_current);
1149		1166
1150	for (i = PRIO_MAX - PRIO_MIN + 1; i--; )	1167	for (i = PRIO_MAX - PRIO_MIN + 1; i--; )
1151	coro_ready[i] = newAV ();	1168	coro_ready[i] = newAV ();
1152		1169
1153	{	1170	{
1154	SV *sv = perl_get_sv("Coro::API", 1);	1171	SV *sv = perl_get_sv("Coro::API", 1);
1155		1172
1156	coroapi.schedule = api_schedule;	1173	coroapi.schedule = api_schedule;
1157	coroapi.cede = api_cede;	1174	coroapi.cede = api_cede;
1158	coroapi.ready = api_ready;	1175	coroapi.ready = api_ready;
		1176	coroapi.is_ready = api_is_ready;
1159	coroapi.nready = &coro_nready;	1177	coroapi.nready = &coro_nready;
1160	coroapi.current = coro_current;	1178	coroapi.current = coro_current;
1161		1179
1162	GCoroAPI = &coroapi;	1180	GCoroAPI = &coroapi;
1163	sv_setiv (sv, (IV)&coroapi);	1181	sv_setiv (sv, (IV)&coroapi);
…		…
1183		1201
1184	coro->prio = newprio;	1202	coro->prio = newprio;
1185	}	1203	}
1186	}	1204	}
1187		1205
1188	void	1206	SV *
1189	ready (SV *self)	1207	ready (SV *self)
1190	PROTOTYPE: $	1208	PROTOTYPE: $
1191	CODE:	1209	CODE:
1192	api_ready (self);	1210	RETVAL = boolSV (api_ready (self));
		1211	OUTPUT:
		1212	RETVAL
		1213
		1214	SV *
		1215	is_ready (SV *self)
		1216	PROTOTYPE: $
		1217	CODE:
		1218	RETVAL = boolSV (api_is_ready (self));
		1219	OUTPUT:
		1220	RETVAL
1193		1221
1194	int	1222	int
1195	nready (...)	1223	nready (...)
1196	PROTOTYPE:	1224	PROTOTYPE:
1197	CODE:	1225	CODE:
1198	RETVAL = coro_nready;	1226	RETVAL = coro_nready;
1199	OUTPUT:	1227	OUTPUT:
1200	RETVAL	1228	RETVAL
1201		1229
		1230	void
		1231	_set_current (SV *current)
		1232	PROTOTYPE: $
		1233	CODE:
		1234	SvREFCNT_dec (SvRV (coro_current));
		1235	SvRV_set (coro_current, SvREFCNT_inc (SvRV (current)));
		1236
1202	MODULE = Coro::State PACKAGE = Coro::AIO	1237	MODULE = Coro::State PACKAGE = Coro::AIO
1203		1238
1204	SV *	1239	SV *
1205	_get_state ()	1240	_get_state ()
1206	CODE:	1241	CODE:
1207	{	1242	{
1208	struct {	1243	struct io_state *data;
1209	int errorno;
1210	int laststype;
1211	int laststatval;
1212	Stat_t statcache;
1213	} data;
1214		1244
		1245	RETVAL = newSV (sizeof (struct io_state));
		1246	data = (struct io_state *)SvPVX (RETVAL);
		1247	SvCUR_set (RETVAL, sizeof (struct io_state));
		1248	SvPOK_only (RETVAL);
		1249
1215	data.errorno = errno;	1250	data->errorno = errno;
1216	data.laststype = PL_laststype;	1251	data->laststype = PL_laststype;
1217	data.laststatval = PL_laststatval;	1252	data->laststatval = PL_laststatval;
1218	data.statcache = PL_statcache;	1253	data->statcache = PL_statcache;
1219
1220	RETVAL = newSVpvn ((char *)&data, sizeof data);
1221	}	1254	}
1222	OUTPUT:	1255	OUTPUT:
1223	RETVAL	1256	RETVAL
1224		1257
1225	void	1258	void
1226	_set_state (char *data_)	1259	_set_state (char *data_)
1227	PROTOTYPE: $	1260	PROTOTYPE: $
1228	CODE:	1261	CODE:
1229	{	1262	{
1230	struct {	1263	struct io_state data = (void )data_;
1231	int errorno;
1232	int laststype;
1233	int laststatval;
1234	Stat_t statcache;
1235	} data = (void )data_;
1236		1264
1237	errno = data->errorno;	1265	errno = data->errorno;
1238	PL_laststype = data->laststype;	1266	PL_laststype = data->laststype;
1239	PL_laststatval = data->laststatval;	1267	PL_laststatval = data->laststatval;
1240	PL_statcache = data->statcache;	1268	PL_statcache = data->statcache;
1241	}	1269	}
		1270

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Comparing Coro/Coro/State.xs (file contents): Revision 1.93 by root, Sun Nov 26 03:22:50 2006 UTC vs. Revision 1.121 by root, Sat Dec 2 20:40:25 2006 UTC

Diff Legend

Comparing Coro/Coro/State.xs (file contents):
Revision 1.93 by root, Sun Nov 26 03:22:50 2006 UTC vs.
Revision 1.121 by root, Sat Dec 2 20:40:25 2006 UTC