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

Comparing Coro/Coro/State.xs (file contents):
Revision 1.96 by root, Sun Nov 26 18:25:11 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)
		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))
70		92
71	#include "CoroAPI.h"	93	#include "CoroAPI.h"
72		94
73	#define TRANSFER_SET_STACKLEVEL 0x8bfbfbfb /* magic cookie */	95	#define TRANSFER_SET_STACKLEVEL 0x8bfbfbfb /* magic cookie */
74		96
…		…
79	#else	101	#else
80	# define LOCK (void)0	102	# define LOCK (void)0
81	# define UNLOCK (void)0	103	# define UNLOCK (void)0
82	#endif	104	#endif
83		105
		106	struct io_state
		107	{
		108	int errorno;
		109	I32 laststype;
		110	int laststatval;
		111	Stat_t statcache;
		112	};
		113
84	static struct CoroAPI coroapi;	114	static struct CoroAPI coroapi;
85	static AV main_mainstack; / used to differentiate between $main and others */	115	static AV main_mainstack; / used to differentiate between $main and others */
86	static HV coro_state_stash, coro_stash;	116	static HV coro_state_stash, coro_stash;
87	static SV coro_mortal; / will be freed after next transfer */	117	static SV coro_mortal; / will be freed after next transfer */
88		118
		119	static struct coro_cctx *cctx_first;
		120	static int cctx_count, cctx_idle;
		121
89	/* this is a structure representing a c-level coroutine */	122	/* this is a structure representing a c-level coroutine */
90	typedef struct coro_stack {	123	typedef struct coro_cctx {
91	struct coro_stack *next;	124	struct coro_cctx *next;
92		125
93	/* the stack */	126	/* the stack */
94	void *sptr;	127	void *sptr;
95	long ssize; /* positive == mmap, otherwise malloc */	128	long ssize; /* positive == mmap, otherwise malloc */
96		129
97	/* cpu state */	130	/* cpu state */
98	void idle_sp; / sp of top-level transfer/schedule/cede call */	131	void idle_sp; / sp of top-level transfer/schedule/cede call */
99	JMPENV *top_env;	132	JMPENV *top_env;
100	coro_context cctx;	133	coro_context cctx;
101	} coro_stack;	134
		135	int inuse;
		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	};
102		147
103	/* this is a structure representing a perl-level coroutine */	148	/* this is a structure representing a perl-level coroutine */
104	struct coro {	149	struct coro {
105	/* the c coroutine allocated to this perl coroutine, if any */	150	/* the c coroutine allocated to this perl coroutine, if any */
106	coro_stack *stack;	151	coro_cctx *cctx;
107		152
108	/* data associated with this coroutine (initial args) */	153	/* data associated with this coroutine (initial args) */
109	AV *args;	154	AV *args;
110	int refcnt;	155	int refcnt;
		156	int flags;
111		157
112	/* optionally saved, might be zero */	158	/* optionally saved, might be zero */
113	AV *defav;	159	AV *defav;
114	SV *defsv;	160	SV *defsv;
115	SV *errsv;	161	SV *errsv;
116		162
117	/* saved global state not related to stacks */	163	#define VAR(name,type) type name;
118	U8 dowarn;	164	# include "state.h"
119	I32 in_eval;	165	#undef VAR
120
121	/* the stacks and related info (callchain etc..) */
122	PERL_SI *curstackinfo;
123	AV *curstack;
124	AV *mainstack;
125	SV **stack_sp;
126	OP *op;
127	SV **curpad;
128	AV *comppad;
129	CV *compcv;
130	SV **stack_base;
131	SV **stack_max;
132	SV **tmps_stack;
133	I32 tmps_floor;
134	I32 tmps_ix;
135	I32 tmps_max;
136	I32 *markstack;
137	I32 *markstack_ptr;
138	I32 *markstack_max;
139	I32 *scopestack;
140	I32 scopestack_ix;
141	I32 scopestack_max;
142	ANY *savestack;
143	I32 savestack_ix;
144	I32 savestack_max;
145	OP **retstack;
146	I32 retstack_ix;
147	I32 retstack_max;
148	PMOP *curpm;
149	COP *curcop;
150		166
151	/* coro process data */	167	/* coro process data */
152	int prio;	168	int prio;
153	};	169	};
154		170
155	typedef struct coro *Coro__State;	171	typedef struct coro *Coro__State;
156	typedef struct coro *Coro__State_or_hashref;	172	typedef struct coro *Coro__State_or_hashref;
157		173
158	static AV *	174	static AV *
159	coro_clone_padlist (pTHX_ CV *cv)	175	coro_clone_padlist (CV *cv)
160	{	176	{
161	AV *padlist = CvPADLIST (cv);	177	AV *padlist = CvPADLIST (cv);
162	AV newpadlist, newpad;	178	AV newpadlist, newpad;
163		179
164	newpadlist = newAV ();	180	newpadlist = newAV ();
165	AvREAL_off (newpadlist);	181	AvREAL_off (newpadlist);
166	#if PERL_VERSION < 9	182	#if PERL_VERSION_ATLEAST (5,9,0)
		183	Perl_pad_push (aTHX_ padlist, AvFILLp (padlist) + 1);
		184	#else
167	Perl_pad_push (aTHX_ padlist, AvFILLp (padlist) + 1, 1);	185	Perl_pad_push (aTHX_ padlist, AvFILLp (padlist) + 1, 1);
168	#else
169	Perl_pad_push (aTHX_ padlist, AvFILLp (padlist) + 1);
170	#endif	186	#endif
171	newpad = (AV *)AvARRAY (padlist)[AvFILLp (padlist)];	187	newpad = (AV *)AvARRAY (padlist)[AvFILLp (padlist)];
172	--AvFILLp (padlist);	188	--AvFILLp (padlist);
173		189
174	av_store (newpadlist, 0, SvREFCNT_inc (*av_fetch (padlist, 0, FALSE)));	190	av_store (newpadlist, 0, SvREFCNT_inc (*av_fetch (padlist, 0, FALSE)));
…		…
176		192
177	return newpadlist;	193	return newpadlist;
178	}	194	}
179		195
180	static void	196	static void
181	free_padlist (pTHX_ AV *padlist)	197	free_padlist (AV *padlist)
182	{	198	{
183	/* may be during global destruction */	199	/* may be during global destruction */
184	if (SvREFCNT (padlist))	200	if (SvREFCNT (padlist))
185	{	201	{
186	I32 i = AvFILLp (padlist);	202	I32 i = AvFILLp (padlist);
…		…
207	AV *padlist;	223	AV *padlist;
208	AV av = (AV )mg->mg_obj;	224	AV av = (AV )mg->mg_obj;
209		225
210	/* casting is fun. */	226	/* casting is fun. */
211	while (&PL_sv_undef != (SV )(padlist = (AV )av_pop (av)))	227	while (&PL_sv_undef != (SV )(padlist = (AV )av_pop (av)))
212	free_padlist (aTHX_ padlist);	228	free_padlist (padlist);
213		229
214	SvREFCNT_dec (av);	230	SvREFCNT_dec (av);
215		231
216	return 0;	232	return 0;
217	}	233	}
218		234
219	#define PERL_MAGIC_coro PERL_MAGIC_ext	235	#define PERL_MAGIC_coro PERL_MAGIC_ext
220		236
221	static MGVTBL vtbl_coro = {0, 0, 0, 0, coro_cv_free};	237	static MGVTBL vtbl_coro = {0, 0, 0, 0, coro_cv_free};
222		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
223	/* the next two functions merely cache the padlists */	246	/* the next two functions merely cache the padlists */
224	static void	247	static void
225	get_padlist (pTHX_ CV *cv)	248	get_padlist (CV *cv)
226	{	249	{
227	MAGIC mg = mg_find ((SV )cv, PERL_MAGIC_coro);	250	MAGIC *mg = CORO_MAGIC (cv);
		251	AV *av;
228		252
229	if (mg && AvFILLp ((AV *)mg->mg_obj) >= 0)	253	if (mg && AvFILLp ((av = (AV *)mg->mg_obj)) >= 0)
230	CvPADLIST (cv) = (AV )av_pop ((AV )mg->mg_obj);	254	CvPADLIST (cv) = (AV *)AvARRAY (av)[AvFILLp (av)--];
231	else	255	else
232	{	256	{
233	#if 0	257	#if 0
234	/* this is probably cleaner, but also slower? */	258	/* this is probably cleaner, but also slower? */
235	CV *cp = Perl_cv_clone (aTHX_ cv);	259	CV *cp = Perl_cv_clone (cv);
236	CvPADLIST (cv) = CvPADLIST (cp);	260	CvPADLIST (cv) = CvPADLIST (cp);
237	CvPADLIST (cp) = 0;	261	CvPADLIST (cp) = 0;
238	SvREFCNT_dec (cp);	262	SvREFCNT_dec (cp);
239	#else	263	#else
240	CvPADLIST (cv) = coro_clone_padlist (aTHX_ cv);	264	CvPADLIST (cv) = coro_clone_padlist (cv);
241	#endif	265	#endif
242	}	266	}
243	}	267	}
244		268
245	static void	269	static void
246	put_padlist (pTHX_ CV *cv)	270	put_padlist (CV *cv)
247	{	271	{
248	MAGIC mg = mg_find ((SV )cv, PERL_MAGIC_coro);	272	MAGIC *mg = CORO_MAGIC (cv);
		273	AV *av;
249		274
250	if (!mg)	275	if (!mg)
251	{	276	{
252	sv_magic ((SV *)cv, 0, PERL_MAGIC_coro, 0, 0);	277	sv_magic ((SV *)cv, 0, PERL_MAGIC_coro, 0, 0);
253	mg = mg_find ((SV *)cv, PERL_MAGIC_coro);	278	mg = mg_find ((SV *)cv, PERL_MAGIC_coro);
254	mg->mg_virtual = &vtbl_coro;	279	mg->mg_virtual = &vtbl_coro;
255	mg->mg_obj = (SV *)newAV ();	280	mg->mg_obj = (SV *)newAV ();
256	}	281	}
257		282
258	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);
259	}	289	}
260		290
261	#define SB do {	291	#define SB do {
262	#define SE } while (0)	292	#define SE } while (0)
263		293
264	#define LOAD(state) load_state(aTHX_ (state));	294	#define LOAD(state) load_state ((state))
265	#define SAVE(state,flags) save_state(aTHX_ (state),(flags));	295	#define SAVE(state,flags) save_state ((state),(flags))
266		296
267	#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
268		298
269	static void	299	static void
270	load_state(pTHX_ Coro__State c)	300	load_state (Coro__State c)
271	{	301	{
272	PL_dowarn = c->dowarn;	302	#define VAR(name,type) PL_ ## name = c->name;
273	PL_in_eval = c->in_eval;	303	# include "state.h"
274		304	#undef VAR
275	PL_curstackinfo = c->curstackinfo;
276	PL_curstack = c->curstack;
277	PL_mainstack = c->mainstack;
278	PL_stack_sp = c->stack_sp;
279	PL_op = c->op;
280	PL_curpad = c->curpad;
281	PL_comppad = c->comppad;
282	PL_compcv = c->compcv;
283	PL_stack_base = c->stack_base;
284	PL_stack_max = c->stack_max;
285	PL_tmps_stack = c->tmps_stack;
286	PL_tmps_floor = c->tmps_floor;
287	PL_tmps_ix = c->tmps_ix;
288	PL_tmps_max = c->tmps_max;
289	PL_markstack = c->markstack;
290	PL_markstack_ptr = c->markstack_ptr;
291	PL_markstack_max = c->markstack_max;
292	PL_scopestack = c->scopestack;
293	PL_scopestack_ix = c->scopestack_ix;
294	PL_scopestack_max = c->scopestack_max;
295	PL_savestack = c->savestack;
296	PL_savestack_ix = c->savestack_ix;
297	PL_savestack_max = c->savestack_max;
298	#if PERL_VERSION < 9
299	PL_retstack = c->retstack;
300	PL_retstack_ix = c->retstack_ix;
301	PL_retstack_max = c->retstack_max;
302	#endif
303	PL_curpm = c->curpm;
304	PL_curcop = c->curcop;
305		305
306	if (c->defav) REPLACE_SV (GvAV (PL_defgv), c->defav);	306	if (c->defav) REPLACE_SV (GvAV (PL_defgv), c->defav);
307	if (c->defsv) REPLACE_SV (DEFSV , c->defsv);	307	if (c->defsv) REPLACE_SV (DEFSV , c->defsv);
308	if (c->errsv) REPLACE_SV (ERRSV , c->errsv);	308	if (c->errsv) REPLACE_SV (ERRSV , c->errsv);
309		309
…		…
312	CV *cv;	312	CV *cv;
313		313
314	/* now do the ugly restore mess */	314	/* now do the ugly restore mess */
315	while ((cv = (CV *)POPs))	315	while ((cv = (CV *)POPs))
316	{	316	{
317	AV padlist = (AV )POPs;
318
319	if (padlist)
320	{
321	put_padlist (aTHX_ cv); /* mark this padlist as available */	317	put_padlist (cv); /* mark this padlist as available */
322	CvPADLIST(cv) = padlist;	318	CvDEPTH (cv) = PTR2IV (POPs);
323	}	319	CvPADLIST (cv) = (AV *)POPs;
324
325	++CvDEPTH(cv);
326	}	320	}
327		321
328	PUTBACK;	322	PUTBACK;
329	}	323	}
330	}	324	}
331		325
332	static void	326	static void
333	save_state(pTHX_ Coro__State c, int flags)	327	save_state (Coro__State c, int flags)
334	{	328	{
335	{	329	{
336	dSP;	330	dSP;
337	I32 cxix = cxstack_ix;	331	I32 cxix = cxstack_ix;
338	PERL_CONTEXT *ccstk = cxstack;	332	PERL_CONTEXT *ccstk = cxstack;
…		…
349	{	343	{
350	while (cxix >= 0)	344	while (cxix >= 0)
351	{	345	{
352	PERL_CONTEXT *cx = &ccstk[cxix--];	346	PERL_CONTEXT *cx = &ccstk[cxix--];
353		347
354	if (CxTYPE(cx) == CXt_SUB)	348	if (CxTYPE (cx) == CXt_SUB)
355	{	349	{
356	CV *cv = cx->blk_sub.cv;	350	CV *cv = cx->blk_sub.cv;
		351
357	if (CvDEPTH(cv))	352	if (CvDEPTH (cv))
358	{	353	{
359	EXTEND (SP, CvDEPTH(cv)*2);	354	EXTEND (SP, 3);
360		355
361	while (--CvDEPTH(cv))
362	{
363	/* this tells the restore code to increment CvDEPTH */
364	PUSHs (Nullsv);
365	PUSHs ((SV *)cv);
366	}
367
368	PUSHs ((SV *)CvPADLIST(cv));	356	PUSHs ((SV *)CvPADLIST (cv));
		357	PUSHs (INT2PTR (SV *, CvDEPTH (cv)));
369	PUSHs ((SV *)cv);	358	PUSHs ((SV *)cv);
370		359
		360	CvDEPTH (cv) = 0;
371	get_padlist (aTHX_ cv);	361	get_padlist (cv);
372	}	362	}
373	}	363	}
374	#ifdef CXt_FORMAT	364	#ifdef CXt_FORMAT
375	else if (CxTYPE(cx) == CXt_FORMAT)	365	else if (CxTYPE (cx) == CXt_FORMAT)
376	{	366	{
377	/* 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? */
378	/* my bold guess is as a simple, plain sub... */	368	/* my bold guess is as a simple, plain sub... */
379	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");
380	}	370	}
…		…
394		384
395	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;
396	c->defsv = flags & TRANSFER_SAVE_DEFSV ? SvREFCNT_inc (DEFSV) : 0;	386	c->defsv = flags & TRANSFER_SAVE_DEFSV ? SvREFCNT_inc (DEFSV) : 0;
397	c->errsv = flags & TRANSFER_SAVE_ERRSV ? SvREFCNT_inc (ERRSV) : 0;	387	c->errsv = flags & TRANSFER_SAVE_ERRSV ? SvREFCNT_inc (ERRSV) : 0;
398		388
399	c->dowarn = PL_dowarn;	389	#define VAR(name,type)c->name = PL_ ## name;
400	c->in_eval = PL_in_eval;	390	# include "state.h"
401		391	#undef VAR
402	c->curstackinfo = PL_curstackinfo;
403	c->curstack = PL_curstack;
404	c->mainstack = PL_mainstack;
405	c->stack_sp = PL_stack_sp;
406	c->op = PL_op;
407	c->curpad = PL_curpad;
408	c->comppad = PL_comppad;
409	c->compcv = PL_compcv;
410	c->stack_base = PL_stack_base;
411	c->stack_max = PL_stack_max;
412	c->tmps_stack = PL_tmps_stack;
413	c->tmps_floor = PL_tmps_floor;
414	c->tmps_ix = PL_tmps_ix;
415	c->tmps_max = PL_tmps_max;
416	c->markstack = PL_markstack;
417	c->markstack_ptr = PL_markstack_ptr;
418	c->markstack_max = PL_markstack_max;
419	c->scopestack = PL_scopestack;
420	c->scopestack_ix = PL_scopestack_ix;
421	c->scopestack_max = PL_scopestack_max;
422	c->savestack = PL_savestack;
423	c->savestack_ix = PL_savestack_ix;
424	c->savestack_max = PL_savestack_max;
425	#if PERL_VERSION < 9
426	c->retstack = PL_retstack;
427	c->retstack_ix = PL_retstack_ix;
428	c->retstack_max = PL_retstack_max;
429	#endif
430	c->curpm = PL_curpm;
431	c->curcop = PL_curcop;
432	}	392	}
433		393
434	/*	394	/*
435	* allocate various perl stacks. This is an exact copy	395	* allocate various perl stacks. This is an exact copy
436	* of perl.c:init_stacks, except that it uses less memory	396	* of perl.c:init_stacks, except that it uses less memory
437	* on the (sometimes correct) assumption that coroutines do	397	* on the (sometimes correct) assumption that coroutines do
438	* not usually need a lot of stackspace.	398	* not usually need a lot of stackspace.
439	*/	399	*/
440	static void	400	static void
441	coro_init_stacks (pTHX)	401	coro_init_stacks ()
442	{	402	{
443	LOCK;
444
445	PL_curstackinfo = new_stackinfo(96, 1024/sizeof(PERL_CONTEXT) - 1);	403	PL_curstackinfo = new_stackinfo(128, 1024/sizeof(PERL_CONTEXT));
446	PL_curstackinfo->si_type = PERLSI_MAIN;	404	PL_curstackinfo->si_type = PERLSI_MAIN;
447	PL_curstack = PL_curstackinfo->si_stack;	405	PL_curstack = PL_curstackinfo->si_stack;
448	PL_mainstack = PL_curstack; /* remember in case we switch stacks */	406	PL_mainstack = PL_curstack; /* remember in case we switch stacks */
449		407
450	PL_stack_base = AvARRAY(PL_curstack);	408	PL_stack_base = AvARRAY(PL_curstack);
451	PL_stack_sp = PL_stack_base;	409	PL_stack_sp = PL_stack_base;
452	PL_stack_max = PL_stack_base + AvMAX(PL_curstack);	410	PL_stack_max = PL_stack_base + AvMAX(PL_curstack);
453		411
454	New(50,PL_tmps_stack,96,SV*);	412	New(50,PL_tmps_stack,128,SV*);
455	PL_tmps_floor = -1;	413	PL_tmps_floor = -1;
456	PL_tmps_ix = -1;	414	PL_tmps_ix = -1;
457	PL_tmps_max = 96;	415	PL_tmps_max = 128;
458		416
459	New(54,PL_markstack,16,I32);	417	New(54,PL_markstack,32,I32);
460	PL_markstack_ptr = PL_markstack;	418	PL_markstack_ptr = PL_markstack;
461	PL_markstack_max = PL_markstack + 16;	419	PL_markstack_max = PL_markstack + 32;
462		420
463	#ifdef SET_MARK_OFFSET	421	#ifdef SET_MARK_OFFSET
464	SET_MARK_OFFSET;	422	SET_MARK_OFFSET;
465	#endif	423	#endif
466		424
467	New(54,PL_scopestack,16,I32);	425	New(54,PL_scopestack,32,I32);
468	PL_scopestack_ix = 0;	426	PL_scopestack_ix = 0;
469	PL_scopestack_max = 16;	427	PL_scopestack_max = 32;
470		428
471	New(54,PL_savestack,96,ANY);	429	New(54,PL_savestack,64,ANY);
472	PL_savestack_ix = 0;	430	PL_savestack_ix = 0;
473	PL_savestack_max = 96;	431	PL_savestack_max = 64;
474		432
475	#if PERL_VERSION < 9	433	#if !PERL_VERSION_ATLEAST (5,9,0)
476	New(54,PL_retstack,8,OP*);	434	New(54,PL_retstack,16,OP*);
477	PL_retstack_ix = 0;	435	PL_retstack_ix = 0;
478	PL_retstack_max = 8;	436	PL_retstack_max = 16;
479	#endif	437	#endif
480
481	UNLOCK;
482	}	438	}
483		439
484	/*	440	/*
485	* destroy the stacks, the callchain etc...	441	* destroy the stacks, the callchain etc...
486	*/	442	*/
487	static void	443	static void
488	destroy_stacks(pTHX)	444	coro_destroy_stacks ()
489	{	445	{
490	if (!IN_DESTRUCT)	446	if (!IN_DESTRUCT)
491	{	447	{
492	/* is this ugly, I ask? */	448	/* is this ugly, I ask? */
493	LEAVE_SCOPE (0);	449	LEAVE_SCOPE (0);
…		…
524		480
525	Safefree (PL_tmps_stack);	481	Safefree (PL_tmps_stack);
526	Safefree (PL_markstack);	482	Safefree (PL_markstack);
527	Safefree (PL_scopestack);	483	Safefree (PL_scopestack);
528	Safefree (PL_savestack);	484	Safefree (PL_savestack);
529	#if PERL_VERSION < 9	485	#if !PERL_VERSION_ATLEAST (5,9,0)
530	Safefree (PL_retstack);	486	Safefree (PL_retstack);
531	#endif	487	#endif
532	}	488	}
533		489
534	static void	490	static void
535	setup_coro (struct coro *coro)	491	setup_coro (struct coro *coro)
536	{	492	{
537	/*	493	/*
538	* emulate part of the perl startup here.	494	* emulate part of the perl startup here.
539	*/	495	*/
540	dTHX;
541	dSP;
542	UNOP myop;
543	SV sub_init = (SV )get_cv ("Coro::State::coro_init", FALSE);
544		496
545	coro_init_stacks (aTHX);	497	coro_init_stacks ();
546	/PL_curcop = 0;/	498
547	/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
548	SvREFCNT_dec (GvAV (PL_defgv));	510	SvREFCNT_dec (GvAV (PL_defgv));
549	GvAV (PL_defgv) = coro->args; coro->args = 0;	511	GvAV (PL_defgv) = coro->args; coro->args = 0;
550		512
551	SPAGAIN;
552
553	Zero (&myop, 1, UNOP);	513	Zero (&myop, 1, LOGOP);
554	myop.op_next = Nullop;	514	myop.op_next = Nullop;
555	myop.op_flags = OPf_WANT_VOID;	515	myop.op_flags = OPf_WANT_VOID;
556		516
		517	PUSHMARK (SP);
		518	XPUSHs ((SV *)get_cv ("Coro::State::_coro_init", FALSE));
		519	PUTBACK;
557	PL_op = (OP *)&myop;	520	PL_op = (OP *)&myop;
558
559	PUSHMARK(SP);
560	XPUSHs (sub_init);
561	PUTBACK;
562	PL_op = PL_ppaddr[OP_ENTERSUB](aTHX);	521	PL_op = PL_ppaddr[OP_ENTERSUB](aTHX);
563	SPAGAIN;	522	SPAGAIN;
		523	}
564		524
565	ENTER; /* necessary e.g. for dounwind */	525	ENTER; /* necessary e.g. for dounwind */
566	}	526	}
567		527
568	static void	528	static void
…		…
573	SvREFCNT_dec (coro_mortal);	533	SvREFCNT_dec (coro_mortal);
574	coro_mortal = 0;	534	coro_mortal = 0;
575	}	535	}
576	}	536	}
577		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
578	static void	559	static void
579	coro_run (void *arg)	560	coro_run (void *arg)
580	{	561	{
		562	/* coro_run is the alternative tail of transfer(), so unlock here. */
		563	UNLOCK;
		564
581	/*	565	/*
582	* this is a _very_ stripped down perl interpreter ;)	566	* this is a _very_ stripped down perl interpreter ;)
583	*/	567	*/
584	dTHX;
585	int ret;
586
587	UNLOCK;
588
589	PL_top_env = &PL_start_env;	568	PL_top_env = &PL_start_env;
590		569
591	sv_setiv (get_sv ("Coro::State::cctx_stack", FALSE), PTR2IV ((coro_stack *)arg));	570	/* inject call to cctx_init */
592	sv_setiv (get_sv ("Coro::State::cctx_restartop", FALSE), PTR2IV (PL_op));	571	prepare_cctx ((coro_cctx *)arg);
593
594	/* continue at cctx_init, without entersub */
595	PL_restartop = CvSTART (get_cv ("Coro::State::cctx_init", FALSE));
596		572
597	/* somebody will hit me for both perl_run and PL_restartop */	573	/* somebody will hit me for both perl_run and PL_restartop */
598	ret = perl_run (aTHX_ PERL_GET_CONTEXT);	574	PL_restartop = PL_op;
599	printf ("ret %d\n", ret);//D	575	perl_run (PL_curinterp);
600		576
601	fputs ("FATAL: C coroutine fell over the edge of the world, aborting.\n", stderr);	577	fputs ("FATAL: C coroutine fell over the edge of the world, aborting. Did you call exit in a coroutine?\n", stderr);
602	abort ();	578	abort ();
603	}	579	}
604		580
605	static coro_stack *	581	static coro_cctx *
606	stack_new ()	582	cctx_new ()
607	{	583	{
608	coro_stack *stack;	584	coro_cctx *cctx;
609		585
		586	++cctx_count;
		587
610	New (0, stack, 1, coro_stack);	588	New (0, cctx, 1, coro_cctx);
611		589
612	#if HAVE_MMAP	590	#if HAVE_MMAP
613		591
614	stack->ssize = ((STACKSIZE * sizeof (long) + PAGESIZE - 1) / PAGESIZE + STACKGUARD) * PAGESIZE;	592	cctx->ssize = ((STACKSIZE * sizeof (long) + PAGESIZE - 1) / PAGESIZE + STACKGUARD) * PAGESIZE;
615	/* mmap suppsedly does allocate-on-write for us */	593	/* mmap supposedly does allocate-on-write for us */
616	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);
617		595
618	if (stack->sptr == (void *)-1)	596	if (cctx->sptr == (void *)-1)
619	{	597	{
620	perror ("FATAL: unable to mmap stack for coroutine");	598	perror ("FATAL: unable to mmap stack for coroutine");
621	_exit (EXIT_FAILURE);	599	_exit (EXIT_FAILURE);
622	}	600	}
623		601
624	# if STACKGUARD	602	# if STACKGUARD
625	mprotect (stack->sptr, STACKGUARD * PAGESIZE, PROT_NONE);	603	mprotect (cctx->sptr, STACKGUARD * PAGESIZE, PROT_NONE);
626	# endif	604	# endif
627		605
628	#else	606	#else
629		607
630	stack->ssize = STACKSIZE * (long)sizeof (long);	608	cctx->ssize = STACKSIZE * (long)sizeof (long);
631	New (0, stack->sptr, STACKSIZE, long);	609	New (0, cctx->sptr, STACKSIZE, long);
632		610
633	if (!stack->sptr)	611	if (!cctx->sptr)
634	{	612	{
635	perror (stderr, "FATAL: unable to malloc stack for coroutine");	613	perror ("FATAL: unable to malloc stack for coroutine");
636	_exit (EXIT_FAILURE);	614	_exit (EXIT_FAILURE);
637	}	615	}
638		616
639	#endif	617	#endif
640		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
641	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);
642		627
643	return stack;	628	return cctx;
644	}	629	}
645		630
646	static void	631	static void
647	stack_free (coro_stack *stack)	632	cctx_destroy (coro_cctx *cctx)
648	{	633	{
649	if (!stack)	634	if (!cctx)
650	return;	635	return;
651		636
		637	--cctx_count;
		638
		639	#if USE_VALGRIND
		640	VALGRIND_STACK_DEREGISTER (cctx->valgrind_id);
		641	#endif
		642
652	#if HAVE_MMAP	643	#if HAVE_MMAP
653	munmap (stack->sptr, stack->ssize);	644	munmap (cctx->sptr, cctx->ssize);
654	#else	645	#else
655	Safefree (stack->sptr);	646	Safefree (cctx->sptr);
656	#endif	647	#endif
657		648
658	Safefree (stack);	649	Safefree (cctx);
659	}	650	}
660		651
661	static coro_stack *stack_first;
662
663	static coro_stack *	652	static coro_cctx *
664	stack_get ()	653	cctx_get ()
665	{	654	{
666	coro_stack *stack;	655	coro_cctx *cctx;
667		656
668	if (stack_first)	657	if (cctx_first)
669	{	658	{
670	stack = stack_first;	659	cctx = cctx_first;
671	stack_first = stack->next;	660	cctx_first = cctx->next;
		661	--cctx_idle;
672	}	662	}
673	else	663	else
674	{	664	{
675	stack = stack_new ();	665	cctx = cctx_new ();
676	PL_op = PL_op->op_next;	666	PL_op = PL_op->op_next;
677	}	667	}
678		668
679	return stack;	669	return cctx;
680	}	670	}
681		671
682	static void	672	static void
683	stack_put (coro_stack *stack)	673	cctx_put (coro_cctx *cctx)
684	{	674	{
685	stack->next = stack_first;	675	/* free another cctx if overlimit */
686	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;
687	}	689	}
688		690
689	/* never call directly, always through the coro_state_transfer global variable */	691	/* never call directly, always through the coro_state_transfer global variable */
690	static void	692	static void NOINLINE
691	transfer_impl (pTHX_ struct coro prev, struct coro next, int flags)	693	transfer (struct coro prev, struct coro next, int flags)
692	{	694	{
693	dSTACKLEVEL;	695	dSTACKLEVEL;
694		696
695	/* sometimes transfer is only called to set idle_sp */	697	/* sometimes transfer is only called to set idle_sp */
696	if (flags == TRANSFER_SET_STACKLEVEL)	698	if (flags == TRANSFER_SET_STACKLEVEL)
697	((coro_stack *)prev)->idle_sp = STACKLEVEL;	699	((coro_cctx *)prev)->idle_sp = STACKLEVEL;
698	else if (prev != next)	700	else if (prev != next)
699	{	701	{
700	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;
701		722
702	LOCK;	723	LOCK;
703		724
704	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
705	{	737	{
706	/* coroutine already started */	738	/* coroutine already started */
707	SAVE (prev, flags);	739	SAVE (prev, flags);
708	LOAD (next);	740	LOAD (next);
709	}	741	}
710	else	742
		743	prev__cctx = prev->cctx;
		744
		745	/* possibly "free" the cctx */
		746	if (prev__cctx->idle_sp == STACKLEVEL)
711	{	747	{
712	/* need to start coroutine */	748	/* I assume that STACKLEVEL is a stronger indicator than PL_top_env changes */
713	/* first get rid of the old state */	749	assert (PL_top_env == prev__cctx->top_env);
714	SAVE (prev, -1);	750
715	/* setup coroutine call */	751	prev->cctx = 0;
716	setup_coro (next);	752
717	/* need a stack */	753	cctx_put (prev__cctx);
718	next->stack = 0;	754	prev__cctx->inuse = 0;
719	}	755	}
720		756
721	if (!prev->stack)	757	if (!next->cctx)
722	/* create a new empty context */
723	Newz (0, prev->stack, 1, coro_stack);
724
725	prev__stack = prev->stack;
726
727	/* possibly "free" the stack */
728	if (prev__stack->idle_sp == STACKLEVEL)
729	{	758	{
730	stack_put (prev__stack);	759	next->cctx = cctx_get ();
731	prev->stack = 0;	760	assert (!next->cctx->inuse);
		761	next->cctx->inuse = 1;
732	}	762	}
733		763
734	if (!next->stack)
735	next->stack = stack_get ();
736
737	if (prev__stack != next->stack)	764	if (prev__cctx != next->cctx)
738	{	765	{
739	prev__stack->top_env = PL_top_env;	766	prev__cctx->top_env = PL_top_env;
740	PL_top_env = next->stack->top_env;	767	PL_top_env = next->cctx->top_env;
741	coro_transfer (&prev__stack->cctx, &next->stack->cctx);	768	coro_transfer (&prev__cctx->cctx, &next->cctx->cctx);
742	}	769	}
743		770
744	free_coro_mortal ();	771	free_coro_mortal ();
745		772
746	UNLOCK;	773	UNLOCK;
747	}	774	}
748	}	775	}
749
750	/* use this function pointer to call the above function */
751	/* this is done to increase chances of the compiler not inlining the call */
752	/* not static to make it even harder for the compiler (and theoretically impossible in most cases */
753	void (coro_state_transfer)(pTHX_ struct coro prev, struct coro *next, int flags) = transfer_impl;
754		776
755	struct transfer_args	777	struct transfer_args
756	{	778	{
757	struct coro prev, next;	779	struct coro prev, next;
758	int flags;	780	int flags;
759	};	781	};
760		782
761	#define TRANSFER(ta) coro_state_transfer ((ta).prev, (ta).next, (ta).flags)	783	#define TRANSFER(ta) transfer ((ta).prev, (ta).next, (ta).flags)
762		784
763	static void	785	static void
764	coro_state_destroy (struct coro *coro)	786	coro_state_destroy (struct coro *coro)
765	{	787	{
766	if (coro->refcnt--)	788	if (coro->refcnt--)
…		…
768		790
769	if (coro->mainstack && coro->mainstack != main_mainstack)	791	if (coro->mainstack && coro->mainstack != main_mainstack)
770	{	792	{
771	struct coro temp;	793	struct coro temp;
772		794
		795	if (coro->flags & CF_RUNNING)
		796	croak ("FATAL: tried to destroy currently running coroutine");
		797
773	SAVE (aTHX_ (&temp), TRANSFER_SAVE_ALL);	798	SAVE ((&temp), TRANSFER_SAVE_ALL);
774	LOAD (aTHX_ coro);	799	LOAD (coro);
775		800
776	destroy_stacks (aTHX);	801	coro_destroy_stacks ();
777		802
778	LOAD ((&temp)); /* this will get rid of defsv etc.. */	803	LOAD ((&temp)); /* this will get rid of defsv etc.. */
779		804
780	coro->mainstack = 0;	805	coro->mainstack = 0;
781	}	806	}
782		807
783	stack_free (coro->stack);	808	cctx_destroy (coro->cctx);
784	SvREFCNT_dec (coro->args);	809	SvREFCNT_dec (coro->args);
785	Safefree (coro);	810	Safefree (coro);
786	}	811	}
787		812
788	static int	813	static int
789	coro_state_clear (SV sv, MAGIC mg)	814	coro_state_clear (pTHX_ SV sv, MAGIC mg)
790	{	815	{
791	struct coro coro = (struct coro )mg->mg_ptr;	816	struct coro coro = (struct coro )mg->mg_ptr;
792	mg->mg_ptr = 0;	817	mg->mg_ptr = 0;
793		818
794	coro_state_destroy (coro);	819	coro_state_destroy (coro);
795		820
796	return 0;	821	return 0;
797	}	822	}
798		823
799	static int	824	static int
800	coro_state_dup (MAGIC mg, CLONE_PARAMS params)	825	coro_state_dup (pTHX_ MAGIC mg, CLONE_PARAMS params)
801	{	826	{
802	struct coro coro = (struct coro )mg->mg_ptr;	827	struct coro coro = (struct coro )mg->mg_ptr;
803		828
804	++coro->refcnt;	829	++coro->refcnt;
805		830
806	return 0;	831	return 0;
807	}	832	}
808		833
809	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	};
810		844
811	static struct coro *	845	static struct coro *
812	SvSTATE (SV *coro)	846	SvSTATE (SV *coro)
813	{	847	{
814	HV *stash;	848	HV *stash;
…		…
829	assert (mg->mg_type == PERL_MAGIC_ext);	863	assert (mg->mg_type == PERL_MAGIC_ext);
830	return (struct coro *)mg->mg_ptr;	864	return (struct coro *)mg->mg_ptr;
831	}	865	}
832		866
833	static void	867	static void
834	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)
835	{	869	{
836	ta->prev = SvSTATE (prev);	870	ta->prev = SvSTATE (prev);
837	ta->next = SvSTATE (next);	871	ta->next = SvSTATE (next);
838	ta->flags = flags;	872	ta->flags = flags;
839	}	873	}
840		874
841	static void	875	static void
842	api_transfer (SV prev, SV next, int flags)	876	api_transfer (SV prev, SV next, int flags)
843	{	877	{
844	dTHX;
845	struct transfer_args ta;	878	struct transfer_args ta;
846		879
847	prepare_transfer (aTHX_ &ta, prev, next, flags);	880	prepare_transfer (&ta, prev, next, flags);
848	TRANSFER (ta);	881	TRANSFER (ta);
849	}	882	}
850		883
851	/ Coro ******************************************************************/	884	/ Coro ******************************************************************/
852		885
…		…
856	#define PRIO_LOW -1	889	#define PRIO_LOW -1
857	#define PRIO_IDLE -3	890	#define PRIO_IDLE -3
858	#define PRIO_MIN -4	891	#define PRIO_MIN -4
859		892
860	/* for Coro.pm */	893	/* for Coro.pm */
861	static GV coro_current, coro_idle;	894	static SV *coro_current;
862	static AV *coro_ready [PRIO_MAX-PRIO_MIN+1];	895	static AV *coro_ready [PRIO_MAX-PRIO_MIN+1];
863	static int coro_nready;	896	static int coro_nready;
864		897
865	static void	898	static void
866	coro_enq (pTHX_ SV *sv)	899	coro_enq (SV *coro_sv)
867	{	900	{
868	int prio;
869
870	if (SvTYPE (sv) != SVt_PVHV)
871	croak ("Coro::ready tried to enqueue something that is not a coroutine");
872
873	prio = SvSTATE (sv)->prio;
874
875	av_push (coro_ready [prio - PRIO_MIN], sv);	901	av_push (coro_ready [SvSTATE (coro_sv)->prio - PRIO_MIN], coro_sv);
876	coro_nready++;	902	coro_nready++;
877	}	903	}
878		904
879	static SV *	905	static SV *
880	coro_deq (pTHX_ int min_prio)	906	coro_deq (int min_prio)
881	{	907	{
882	int prio = PRIO_MAX - PRIO_MIN;	908	int prio = PRIO_MAX - PRIO_MIN;
883		909
884	min_prio -= PRIO_MIN;	910	min_prio -= PRIO_MIN;
885	if (min_prio < 0)	911	if (min_prio < 0)
…		…
893	}	919	}
894		920
895	return 0;	921	return 0;
896	}	922	}
897		923
898	static void	924	static int
899	api_ready (SV *coro)	925	api_ready (SV *coro_sv)
900	{	926	{
901	dTHX;	927	struct coro *coro;
902		928
903	if (SvROK (coro))	929	if (SvROK (coro_sv))
904	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;
905		943
906	LOCK;	944	LOCK;
907	coro_enq (aTHX_ SvREFCNT_inc (coro));	945	coro_enq (SvREFCNT_inc (coro_sv));
908	UNLOCK;	946	UNLOCK;
909	}
910		947
		948	return 1;
		949	}
		950
911	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
912	prepare_schedule (aTHX_ struct transfer_args *ta)	958	prepare_schedule (struct transfer_args *ta)
913	{	959	{
914	SV current, prev, *next;	960	SV prev, next;
915
916	LOCK;
917
918	current = GvSV (coro_current);
919		961
920	for (;;)	962	for (;;)
921	{	963	{
922	LOCK;	964	LOCK;
923
924	next = coro_deq (aTHX_ PRIO_MIN);	965	next = coro_deq (PRIO_MIN);
		966	UNLOCK;
925		967
926	if (next)	968	if (next)
927	break;	969	break;
928		970
929	UNLOCK;
930
931	{	971	{
932	dSP;	972	dSP;
933		973
934	ENTER;	974	ENTER;
935	SAVETMPS;	975	SAVETMPS;
936		976
937	PUSHMARK (SP);	977	PUSHMARK (SP);
938	PUTBACK;	978	PUTBACK;
939	call_sv (GvSV (coro_idle), G_DISCARD);	979	call_sv (get_sv ("Coro::idle", FALSE), G_DISCARD);
940		980
941	FREETMPS;	981	FREETMPS;
942	LEAVE;	982	LEAVE;
943	}	983	}
944	}	984	}
945		985
946	prev = SvRV (current);	986	prev = SvRV (coro_current);
947	SvRV (current) = next;	987	SvRV_set (coro_current, next);
948		988
949	/* free this only after the transfer */	989	/* free this only after the transfer */
		990	LOCK;
950	free_coro_mortal ();	991	free_coro_mortal ();
		992	UNLOCK;
951	coro_mortal = prev;	993	coro_mortal = prev;
952		994
		995	assert (!SvROK(prev));//D
		996	assert (!SvROK(next));//D
		997
953	ta->prev = SvSTATE (prev);	998	ta->prev = SvSTATE (prev);
954	ta->next = SvSTATE (next);	999	ta->next = SvSTATE (next);
955	ta->flags = TRANSFER_SAVE_ALL;	1000	ta->flags = TRANSFER_SAVE_ALL;
956		1001
957	UNLOCK;	1002	assert (ta->flags & CF_READY);
		1003	ta->next->flags &= ~CF_READY;
958	}	1004	}
959		1005
960	static void	1006	static void
961	prepare_cede (aTHX_ struct transfer_args *ta)	1007	prepare_cede (struct transfer_args *ta)
962	{	1008	{
963	LOCK;	1009	api_ready (coro_current);
964	coro_enq (aTHX_ SvREFCNT_inc (SvRV (GvSV (coro_current))));
965	UNLOCK;
966		1010
967	prepare_schedule (ta);	1011	prepare_schedule (ta);
968	}	1012	}
969		1013
970	static void	1014	static void
971	api_schedule (void)	1015	api_schedule (void)
972	{	1016	{
973	dTHX;
974	struct transfer_args ta;	1017	struct transfer_args ta;
975		1018
976	prepare_schedule (&ta);	1019	prepare_schedule (&ta);
977	TRANSFER (ta);	1020	TRANSFER (ta);
978	}	1021	}
979		1022
980	static void	1023	static void
981	api_cede (void)	1024	api_cede (void)
982	{	1025	{
983	dTHX;
984	struct transfer_args ta;	1026	struct transfer_args ta;
985		1027
986	prepare_cede (&ta);	1028	prepare_cede (&ta);
987	TRANSFER (ta);	1029	TRANSFER (ta);
988	}	1030	}
…		…
1020	HV *hv;	1062	HV *hv;
1021	int i;	1063	int i;
1022		1064
1023	Newz (0, coro, 1, struct coro);	1065	Newz (0, coro, 1, struct coro);
1024	coro->args = newAV ();	1066	coro->args = newAV ();
		1067	coro->flags = CF_NEW;
1025		1068
1026	hv = newHV ();	1069	hv = newHV ();
1027	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;
1028	RETVAL = sv_bless (newRV_noinc ((SV *)hv), gv_stashpv (klass, 1));	1071	RETVAL = sv_bless (newRV_noinc ((SV *)hv), gv_stashpv (klass, 1));
1029		1072
1030	for (i = 1; i < items; i++)	1073	for (i = 1; i < items; i++)
1031	av_push (coro->args, newSVsv (ST (i)));	1074	av_push (coro->args, newSVsv (ST (i)));
1032
1033	/coro->mainstack = 0; //actual work is done inside transfer /
1034	/coro->stack = 0;/
1035	}	1075	}
1036	OUTPUT:	1076	OUTPUT:
1037	RETVAL	1077	RETVAL
1038		1078
1039	void	1079	void
1040	_set_stacklevel (...)	1080	_set_stacklevel (...)
1041	ALIAS:	1081	ALIAS:
1042	Coro::State::transfer = 1	1082	Coro::State::transfer = 1
1043	Coro::schedule = 2	1083	Coro::schedule = 2
1044	Coro::cede = 3	1084	Coro::cede = 3
1045	Coro::Cont::yield = 4
1046	CODE:	1085	CODE:
1047	{	1086	{
1048	struct transfer_args ta;	1087	struct transfer_args ta;
1049		1088
1050	switch (ix)	1089	switch (ix)
1051	{	1090	{
1052	case 0:	1091	case 0:
1053	ta.prev = (struct coro )INT2PTR (coro_stack , SvIV (ST (0)));	1092	ta.prev = (struct coro )INT2PTR (coro_cctx , SvIV (ST (0)));
1054	ta.next = 0;	1093	ta.next = 0;
1055	ta.flags = TRANSFER_SET_STACKLEVEL;	1094	ta.flags = TRANSFER_SET_STACKLEVEL;
1056	break;	1095	break;
1057		1096
1058	case 1:	1097	case 1:
1059	if (items != 3)	1098	if (items != 3)
1060	croak ("Coro::State::transfer(prev,next,flags) expects three arguments, not %d", items);	1099	croak ("Coro::State::transfer (prev,next,flags) expects three arguments, not %d", items);
1061		1100
1062	prepare_transfer (&ta, ST (0), ST (1), SvIV (ST (2)));	1101	prepare_transfer (&ta, ST (0), ST (1), SvIV (ST (2)));
1063	break;	1102	break;
1064		1103
1065	case 2:	1104	case 2:
…		…
1067	break;	1106	break;
1068		1107
1069	case 3:	1108	case 3:
1070	prepare_cede (&ta);	1109	prepare_cede (&ta);
1071	break;	1110	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	}	1111	}
1100		1112
1101	TRANSFER (ta);	1113	TRANSFER (ta);
1102	}	1114	}
1103		1115
…		…
1110	sv_unmagic (SvRV (dst), PERL_MAGIC_ext);	1122	sv_unmagic (SvRV (dst), PERL_MAGIC_ext);
1111		1123
1112	++coro_src->refcnt;	1124	++coro_src->refcnt;
1113	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;
1114	}	1126	}
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		1127
1122	void	1128	void
1123	_exit (code)	1129	_exit (code)
1124	int code	1130	int code
1125	PROTOTYPE: $	1131	PROTOTYPE: $
1126	CODE:	1132	CODE:
1127	_exit (code);	1133	_exit (code);
1128		1134
		1135	int
		1136	cctx_count ()
		1137	CODE:
		1138	RETVAL = cctx_count;
		1139	OUTPUT:
		1140	RETVAL
		1141
		1142	int
		1143	cctx_idle ()
		1144	CODE:
		1145	RETVAL = cctx_idle;
		1146	OUTPUT:
		1147	RETVAL
		1148
1129	MODULE = Coro::State PACKAGE = Coro	1149	MODULE = Coro::State PACKAGE = Coro
1130		1150
1131	BOOT:	1151	BOOT:
1132	{	1152	{
1133	int i;	1153	int i;
…		…
1139	newCONSTSUB (coro_stash, "PRIO_NORMAL", newSViv (PRIO_NORMAL));	1159	newCONSTSUB (coro_stash, "PRIO_NORMAL", newSViv (PRIO_NORMAL));
1140	newCONSTSUB (coro_stash, "PRIO_LOW", newSViv (PRIO_LOW));	1160	newCONSTSUB (coro_stash, "PRIO_LOW", newSViv (PRIO_LOW));
1141	newCONSTSUB (coro_stash, "PRIO_IDLE", newSViv (PRIO_IDLE));	1161	newCONSTSUB (coro_stash, "PRIO_IDLE", newSViv (PRIO_IDLE));
1142	newCONSTSUB (coro_stash, "PRIO_MIN", newSViv (PRIO_MIN));	1162	newCONSTSUB (coro_stash, "PRIO_MIN", newSViv (PRIO_MIN));
1143		1163
1144	coro_current = gv_fetchpv ("Coro::current", TRUE, SVt_PV);	1164	coro_current = get_sv ("Coro::current", FALSE);
1145	coro_idle = gv_fetchpv ("Coro::idle" , TRUE, SVt_PV);	1165	SvREADONLY_on (coro_current);
1146		1166
1147	for (i = PRIO_MAX - PRIO_MIN + 1; i--; )	1167	for (i = PRIO_MAX - PRIO_MIN + 1; i--; )
1148	coro_ready[i] = newAV ();	1168	coro_ready[i] = newAV ();
1149		1169
1150	{	1170	{
1151	SV *sv = perl_get_sv("Coro::API", 1);	1171	SV *sv = perl_get_sv("Coro::API", 1);
1152		1172
1153	coroapi.schedule = api_schedule;	1173	coroapi.schedule = api_schedule;
1154	coroapi.cede = api_cede;	1174	coroapi.cede = api_cede;
1155	coroapi.ready = api_ready;	1175	coroapi.ready = api_ready;
		1176	coroapi.is_ready = api_is_ready;
1156	coroapi.nready = &coro_nready;	1177	coroapi.nready = &coro_nready;
1157	coroapi.current = coro_current;	1178	coroapi.current = coro_current;
1158		1179
1159	GCoroAPI = &coroapi;	1180	GCoroAPI = &coroapi;
1160	sv_setiv (sv, (IV)&coroapi);	1181	sv_setiv (sv, (IV)&coroapi);
…		…
1180		1201
1181	coro->prio = newprio;	1202	coro->prio = newprio;
1182	}	1203	}
1183	}	1204	}
1184		1205
1185	void	1206	SV *
1186	ready (SV *self)	1207	ready (SV *self)
1187	PROTOTYPE: $	1208	PROTOTYPE: $
1188	CODE:	1209	CODE:
1189	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
1190		1221
1191	int	1222	int
1192	nready (...)	1223	nready (...)
1193	PROTOTYPE:	1224	PROTOTYPE:
1194	CODE:	1225	CODE:
1195	RETVAL = coro_nready;	1226	RETVAL = coro_nready;
1196	OUTPUT:	1227	OUTPUT:
1197	RETVAL	1228	RETVAL
1198		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
1199	MODULE = Coro::State PACKAGE = Coro::AIO	1237	MODULE = Coro::State PACKAGE = Coro::AIO
1200		1238
1201	SV *	1239	SV *
1202	_get_state ()	1240	_get_state ()
1203	CODE:	1241	CODE:
1204	{	1242	{
1205	struct {	1243	struct io_state *data;
1206	int errorno;
1207	int laststype;
1208	int laststatval;
1209	Stat_t statcache;
1210	} data;
1211		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
1212	data.errorno = errno;	1250	data->errorno = errno;
1213	data.laststype = PL_laststype;	1251	data->laststype = PL_laststype;
1214	data.laststatval = PL_laststatval;	1252	data->laststatval = PL_laststatval;
1215	data.statcache = PL_statcache;	1253	data->statcache = PL_statcache;
1216
1217	RETVAL = newSVpvn ((char *)&data, sizeof data);
1218	}	1254	}
1219	OUTPUT:	1255	OUTPUT:
1220	RETVAL	1256	RETVAL
1221		1257
1222	void	1258	void
1223	_set_state (char *data_)	1259	_set_state (char *data_)
1224	PROTOTYPE: $	1260	PROTOTYPE: $
1225	CODE:	1261	CODE:
1226	{	1262	{
1227	struct {	1263	struct io_state data = (void )data_;
1228	int errorno;
1229	int laststype;
1230	int laststatval;
1231	Stat_t statcache;
1232	} data = (void )data_;
1233		1264
1234	errno = data->errorno;	1265	errno = data->errorno;
1235	PL_laststype = data->laststype;	1266	PL_laststype = data->laststype;
1236	PL_laststatval = data->laststatval;	1267	PL_laststatval = data->laststatval;
1237	PL_statcache = data->statcache;	1268	PL_statcache = data->statcache;
1238	}	1269	}
		1270

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Comparing Coro/Coro/State.xs (file contents): Revision 1.96 by root, Sun Nov 26 18:25:11 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 1.96 by root, Sun Nov 26 18:25:11 2006 UTC vs.
Revision 1.121 by root, Sat Dec 2 20:40:25 2006 UTC