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

Comparing Coro/Coro/State.xs (file contents):
Revision 1.126 by root, Tue Dec 12 04:19:56 2006 UTC vs.
Revision 1.148 by root, Fri Apr 13 12:56:55 2007 UTC

…		…
1	#include "libcoro/coro.c"	1	#include "libcoro/coro.c"
		2
		3	#define PERL_NO_GET_CONTEXT
2		4
3	#include "EXTERN.h"	5	#include "EXTERN.h"
4	#include "perl.h"	6	#include "perl.h"
5	#include "XSUB.h"	7	#include "XSUB.h"
6		8
7	#include "patchlevel.h"	9	#include "patchlevel.h"
8		10
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)
23	# ifndef PL_ppaddr
24	# define PL_ppaddr ppaddr
25	# endif
26	# ifndef call_sv
27	# define call_sv perl_call_sv
28	# endif
29	# ifndef get_sv
30	# define get_sv perl_get_sv
31	# endif
32	# ifndef get_cv
33	# define get_cv perl_get_cv
34	# endif
35	# ifndef IS_PADGV
36	# define IS_PADGV(v) 0
37	# endif
38	# ifndef IS_PADCONST
39	# define IS_PADCONST(v) 0
40	# endif
41	#endif
42
43	/* 5.8.7 */
44	#ifndef SvRV_set
45	# define SvRV_set(s,v) SvRV(s) = (v)
46	#endif
47
48	#include <stdio.h>	11	#include <stdio.h>
49	#include <errno.h>	12	#include <errno.h>
50	#include <assert.h>	13	#include <assert.h>
51
52	#if !__i386 && !__x86_64 && !__powerpc && !__m68k && !__alpha && !__mips && !__sparc64
53	# undef STACKGUARD
54	#endif
55
56	#ifndef STACKGUARD
57	# define STACKGUARD 0
58	#endif
59		14
60	#ifdef HAVE_MMAP	15	#ifdef HAVE_MMAP
61	# include <unistd.h>	16	# include <unistd.h>
62	# include <sys/mman.h>	17	# include <sys/mman.h>
63	# ifndef MAP_ANONYMOUS	18	# ifndef MAP_ANONYMOUS
78	#else	33	#else
79	# define PAGESIZE 0	34	# define PAGESIZE 0
80	# define BOOT_PAGESIZE (void)0	35	# define BOOT_PAGESIZE (void)0
81	#endif	36	#endif
82		37
		38	#if CORO_USE_VALGRIND
		39	# include <valgrind/valgrind.h>
		40	# define REGISTER_STACK(cctx,start,end) (cctx)->valgrind_id = VALGRIND_STACK_REGISTER ((start), (end))
		41	#else
		42	# define REGISTER_STACK(cctx,start,end)
		43	#endif
		44
		45	/* the maximum number of idle cctx that will be pooled */
		46	#define MAX_IDLE_CCTX 8
		47
		48	#define PERL_VERSION_ATLEAST(a,b,c) \
		49	(PERL_REVISION > (a) \
		50	\|\| (PERL_REVISION == (a) \
		51	&& (PERL_VERSION > (b) \
		52	\|\| (PERL_VERSION == (b) && PERLSUBVERSION >= (c)))))
		53
		54	#if !PERL_VERSION_ATLEAST (5,6,0)
		55	# ifndef PL_ppaddr
		56	# define PL_ppaddr ppaddr
		57	# endif
		58	# ifndef call_sv
		59	# define call_sv perl_call_sv
		60	# endif
		61	# ifndef get_sv
		62	# define get_sv perl_get_sv
		63	# endif
		64	# ifndef get_cv
		65	# define get_cv perl_get_cv
		66	# endif
		67	# ifndef IS_PADGV
		68	# define IS_PADGV(v) 0
		69	# endif
		70	# ifndef IS_PADCONST
		71	# define IS_PADCONST(v) 0
		72	# endif
		73	#endif
		74
		75	/* 5.8.7 */
		76	#ifndef SvRV_set
		77	# define SvRV_set(s,v) SvRV(s) = (v)
		78	#endif
		79
		80	#if !__i386 && !__x86_64 && !__powerpc && !__m68k && !__alpha && !__mips && !__sparc64
		81	# undef CORO_STACKGUARD
		82	#endif
		83
		84	#ifndef CORO_STACKGUARD
		85	# define CORO_STACKGUARD 0
		86	#endif
		87
		88	/* prefer perl internal functions over our own? */
		89	#ifndef CORO_PREFER_PERL_FUNCTIONS
		90	# define CORO_PREFER_PERL_FUNCTIONS 0
		91	#endif
		92
83	/* The next macro should declare a variable stacklevel that contains and approximation	93	/* The next macro should declare a variable stacklevel that contains and approximation
84	* to the current C stack pointer. Its property is that it changes with each call	94	* to the current C stack pointer. Its property is that it changes with each call
85	* and should be unique. */	95	* and should be unique. */
86	#define dSTACKLEVEL int stacklevel	96	#define dSTACKLEVEL int stacklevel
87	#define STACKLEVEL ((void *)&stacklevel)	97	#define STACKLEVEL ((void *)&stacklevel)
88		98
89	#define IN_DESTRUCT (PL_main_cv == Nullcv)	99	#define IN_DESTRUCT (PL_main_cv == Nullcv)
90		100
91	#if __GNUC__ >= 3	101	#if __GNUC__ >= 3
92	# define attribute(x) __attribute__(x)	102	# define attribute(x) __attribute__(x)
		103	# define BARRIER __asm__ __volatile__ ("" : : : "memory")
93	#else	104	#else
94	# define attribute(x)	105	# define attribute(x)
		106	# define BARRIER
95	#endif	107	#endif
96		108
97	#define NOINLINE attribute ((noinline))	109	#define NOINLINE attribute ((noinline))
98		110
99	#include "CoroAPI.h"	111	#include "CoroAPI.h"
…		…
105	#else	117	#else
106	# define LOCK (void)0	118	# define LOCK (void)0
107	# define UNLOCK (void)0	119	# define UNLOCK (void)0
108	#endif	120	#endif
109		121
		122	/* helper storage struct for Coro::AIO */
110	struct io_state	123	struct io_state
111	{	124	{
112	int errorno;	125	int errorno;
113	I32 laststype;	126	I32 laststype;
114	int laststatval;	127	int laststatval;
115	Stat_t statcache;	128	Stat_t statcache;
116	};	129	};
117		130
		131	static size_t coro_stacksize = CORO_STACKSIZE;
118	static struct CoroAPI coroapi;	132	static struct CoroAPI coroapi;
119	static AV main_mainstack; / used to differentiate between $main and others */	133	static AV main_mainstack; / used to differentiate between $main and others */
		134	static JMPENV *main_top_env;
120	static HV coro_state_stash, coro_stash;	135	static HV coro_state_stash, coro_stash;
121	static SV coro_mortal; / will be freed after next transfer */	136	static SV coro_mortal; / will be freed after next transfer */
122		137
123	static struct coro_cctx *cctx_first;	138	static struct coro_cctx *cctx_first;
124	static int cctx_count, cctx_idle;	139	static int cctx_count, cctx_idle;
…		…
127	typedef struct coro_cctx {	142	typedef struct coro_cctx {
128	struct coro_cctx *next;	143	struct coro_cctx *next;
129		144
130	/* the stack */	145	/* the stack */
131	void *sptr;	146	void *sptr;
132	long ssize; /* positive == mmap, otherwise malloc */	147	size_t ssize;
133		148
134	/* cpu state */	149	/* cpu state */
135	void idle_sp; / sp of top-level transfer/schedule/cede call */	150	void idle_sp; / sp of top-level transfer/schedule/cede call */
		151	JMPENV idle_te; / same as idle_sp, but for top_env, TODO: remove once stable */
136	JMPENV *top_env;	152	JMPENV *top_env;
137	coro_context cctx;	153	coro_context cctx;
138		154
139	int inuse;
140
141	#if USE_VALGRIND	155	#if CORO_USE_VALGRIND
142	int valgrind_id;	156	int valgrind_id;
143	#endif	157	#endif
		158	char inuse, mapped;
144	} coro_cctx;	159	} coro_cctx;
145		160
146	enum {	161	enum {
147	CF_RUNNING = 0x0001, /* coroutine is running */	162	CF_RUNNING = 0x0001, /* coroutine is running */
148	CF_READY = 0x0002, /* coroutine is ready */	163	CF_READY = 0x0002, /* coroutine is ready */
149	CF_NEW = 0x0004, /* ahs never been switched to */	164	CF_NEW = 0x0004, /* has never been switched to */
		165	CF_DESTROYED = 0x0008, /* coroutine data has been freed */
150	};	166	};
151		167
152	/* this is a structure representing a perl-level coroutine */	168	/* this is a structure representing a perl-level coroutine */
153	struct coro {	169	struct coro {
154	/* the c coroutine allocated to this perl coroutine, if any */	170	/* the c coroutine allocated to this perl coroutine, if any */
…		…
162		178
163	/* optionally saved, might be zero */	179	/* optionally saved, might be zero */
164	AV defav; / @_ */	180	AV defav; / @_ */
165	SV defsv; / $_ */	181	SV defsv; / $_ */
166	SV errsv; / $@ */	182	SV errsv; / $@ */
		183	GV deffh; / default filehandle */
167	SV irssv; / $/ */	184	SV irssv; / $/ */
168	SV irssv_sv; / real $/ cache */	185	SV irssv_sv; / real $/ cache */
169		186
170	#define VAR(name,type) type name;	187	#define VAR(name,type) type name;
171	# include "state.h"	188	# include "state.h"
…		…
176	};	193	};
177		194
178	typedef struct coro *Coro__State;	195	typedef struct coro *Coro__State;
179	typedef struct coro *Coro__State_or_hashref;	196	typedef struct coro *Coro__State_or_hashref;
180		197
		198	/ Coro ******************************************************************/
		199
		200	#define PRIO_MAX 3
		201	#define PRIO_HIGH 1
		202	#define PRIO_NORMAL 0
		203	#define PRIO_LOW -1
		204	#define PRIO_IDLE -3
		205	#define PRIO_MIN -4
		206
		207	/* for Coro.pm */
		208	static SV *coro_current;
		209	static AV *coro_ready [PRIO_MAX-PRIO_MIN+1];
		210	static int coro_nready;
		211
		212	/ lowlevel stuff ********************************************************/
		213
181	static AV *	214	static AV *
182	coro_clone_padlist (CV *cv)	215	coro_clone_padlist (pTHX_ CV *cv)
183	{	216	{
184	AV *padlist = CvPADLIST (cv);	217	AV *padlist = CvPADLIST (cv);
185	AV newpadlist, newpad;	218	AV newpadlist, newpad;
186		219
187	newpadlist = newAV ();	220	newpadlist = newAV ();
…		…
199		232
200	return newpadlist;	233	return newpadlist;
201	}	234	}
202		235
203	static void	236	static void
204	free_padlist (AV *padlist)	237	free_padlist (pTHX_ AV *padlist)
205	{	238	{
206	/* may be during global destruction */	239	/* may be during global destruction */
207	if (SvREFCNT (padlist))	240	if (SvREFCNT (padlist))
208	{	241	{
209	I32 i = AvFILLp (padlist);	242	I32 i = AvFILLp (padlist);
…		…
230	AV *padlist;	263	AV *padlist;
231	AV av = (AV )mg->mg_obj;	264	AV av = (AV )mg->mg_obj;
232		265
233	/* casting is fun. */	266	/* casting is fun. */
234	while (&PL_sv_undef != (SV )(padlist = (AV )av_pop (av)))	267	while (&PL_sv_undef != (SV )(padlist = (AV )av_pop (av)))
235	free_padlist (padlist);	268	free_padlist (aTHX_ padlist);
236		269
237	SvREFCNT_dec (av);	270	SvREFCNT_dec (av);
238		271
239	return 0;	272	return 0;
240	}	273	}
…		…
250	: mg_find ((SV *)cv, PERL_MAGIC_coro) \	283	: mg_find ((SV *)cv, PERL_MAGIC_coro) \
251	: 0	284	: 0
252		285
253	/* the next two functions merely cache the padlists */	286	/* the next two functions merely cache the padlists */
254	static void	287	static void
255	get_padlist (CV *cv)	288	get_padlist (pTHX_ CV *cv)
256	{	289	{
257	MAGIC *mg = CORO_MAGIC (cv);	290	MAGIC *mg = CORO_MAGIC (cv);
258	AV *av;	291	AV *av;
259		292
260	if (mg && AvFILLp ((av = (AV *)mg->mg_obj)) >= 0)	293	if (mg && AvFILLp ((av = (AV *)mg->mg_obj)) >= 0)
261	CvPADLIST (cv) = (AV *)AvARRAY (av)[AvFILLp (av)--];	294	CvPADLIST (cv) = (AV *)AvARRAY (av)[AvFILLp (av)--];
262	else	295	else
263	{	296	{
264	#if 0	297	#if CORO_PREFER_PERL_FUNCTIONS
265	/* this is probably cleaner, but also slower? */	298	/* this is probably cleaner, but also slower? */
266	CV *cp = Perl_cv_clone (cv);	299	CV *cp = Perl_cv_clone (cv);
267	CvPADLIST (cv) = CvPADLIST (cp);	300	CvPADLIST (cv) = CvPADLIST (cp);
268	CvPADLIST (cp) = 0;	301	CvPADLIST (cp) = 0;
269	SvREFCNT_dec (cp);	302	SvREFCNT_dec (cp);
270	#else	303	#else
271	CvPADLIST (cv) = coro_clone_padlist (cv);	304	CvPADLIST (cv) = coro_clone_padlist (aTHX_ cv);
272	#endif	305	#endif
273	}	306	}
274	}	307	}
275		308
276	static void	309	static void
277	put_padlist (CV *cv)	310	put_padlist (pTHX_ CV *cv)
278	{	311	{
279	MAGIC *mg = CORO_MAGIC (cv);	312	MAGIC *mg = CORO_MAGIC (cv);
280	AV *av;	313	AV *av;
281		314
282	if (!mg)	315	if (!mg)
…		…
293	av_extend (av, AvMAX (av) + 1);	326	av_extend (av, AvMAX (av) + 1);
294		327
295	AvARRAY (av)[++AvFILLp (av)] = (SV *)CvPADLIST (cv);	328	AvARRAY (av)[++AvFILLp (av)] = (SV *)CvPADLIST (cv);
296	}	329	}
297		330
		331	/ load & save, init *****************************************************/
		332
298	#define SB do {	333	#define SB do {
299	#define SE } while (0)	334	#define SE } while (0)
300		335
301	#define REPLACE_SV(sv,val) SB SvREFCNT_dec (sv); (sv) = (val); (val) = 0; SE	336	#define REPLACE_SV(sv,val) SB SvREFCNT_dec (sv); (sv) = (val); (val) = 0; SE
302		337
303	static void	338	static void
304	load_perl (Coro__State c)	339	load_perl (pTHX_ Coro__State c)
305	{	340	{
306	#define VAR(name,type) PL_ ## name = c->name;	341	#define VAR(name,type) PL_ ## name = c->name;
307	# include "state.h"	342	# include "state.h"
308	#undef VAR	343	#undef VAR
309		344
310	if (c->defav) REPLACE_SV (GvAV (PL_defgv), c->defav);	345	if (c->defav) REPLACE_SV (GvAV (PL_defgv), c->defav);
311	if (c->defsv) REPLACE_SV (DEFSV , c->defsv);	346	if (c->defsv) REPLACE_SV (DEFSV , c->defsv);
312	if (c->errsv) REPLACE_SV (ERRSV , c->errsv);	347	if (c->errsv) REPLACE_SV (ERRSV , c->errsv);
		348	if (c->deffh) REPLACE_SV (PL_defoutgv , c->deffh);
		349
313	if (c->irssv)	350	if (c->irssv)
314	{	351	{
315	if (c->irssv == PL_rs \|\| sv_eq (PL_rs, c->irssv))	352	if (c->irssv == PL_rs \|\| sv_eq (PL_rs, c->irssv))
		353	{
316	SvREFCNT_dec (c->irssv);	354	SvREFCNT_dec (c->irssv);
		355	c->irssv = 0;
		356	}
317	else	357	else
318	{	358	{
319	REPLACE_SV (PL_rs, c->irssv);	359	REPLACE_SV (PL_rs, c->irssv);
320	if (!c->irssv_sv) c->irssv_sv = get_sv ("/", 0);	360	if (!c->irssv_sv) c->irssv_sv = get_sv ("/", 0);
321	sv_setsv (c->irssv_sv, PL_rs);	361	sv_setsv (c->irssv_sv, PL_rs);
…		…
327	CV *cv;	367	CV *cv;
328		368
329	/* now do the ugly restore mess */	369	/* now do the ugly restore mess */
330	while ((cv = (CV *)POPs))	370	while ((cv = (CV *)POPs))
331	{	371	{
332	put_padlist (cv); /* mark this padlist as available */	372	put_padlist (aTHX_ cv); /* mark this padlist as available */
333	CvDEPTH (cv) = PTR2IV (POPs);	373	CvDEPTH (cv) = PTR2IV (POPs);
334	CvPADLIST (cv) = (AV *)POPs;	374	CvPADLIST (cv) = (AV *)POPs;
335	}	375	}
336		376
337	PUTBACK;	377	PUTBACK;
338	}	378	}
		379	assert (!PL_comppad \|\| AvARRAY (PL_comppad));//D
339	}	380	}
340		381
341	static void	382	static void
342	save_perl (Coro__State c)	383	save_perl (pTHX_ Coro__State c)
343	{	384	{
		385	assert (!PL_comppad \|\| AvARRAY (PL_comppad));//D
344	{	386	{
345	dSP;	387	dSP;
346	I32 cxix = cxstack_ix;	388	I32 cxix = cxstack_ix;
347	PERL_CONTEXT *ccstk = cxstack;	389	PERL_CONTEXT *ccstk = cxstack;
348	PERL_SI *top_si = PL_curstackinfo;	390	PERL_SI *top_si = PL_curstackinfo;
…		…
371	PUSHs ((SV *)CvPADLIST (cv));	413	PUSHs ((SV *)CvPADLIST (cv));
372	PUSHs (INT2PTR (SV *, CvDEPTH (cv)));	414	PUSHs (INT2PTR (SV *, CvDEPTH (cv)));
373	PUSHs ((SV *)cv);	415	PUSHs ((SV *)cv);
374		416
375	CvDEPTH (cv) = 0;	417	CvDEPTH (cv) = 0;
376	get_padlist (cv);	418	get_padlist (aTHX_ cv);
377	}	419	}
378	}	420	}
379	}	421	}
380		422
381	if (top_si->si_type == PERLSI_MAIN)	423	if (top_si->si_type == PERLSI_MAIN)
…		…
390	}	432	}
391		433
392	c->defav = c->save & CORO_SAVE_DEFAV ? (AV *)SvREFCNT_inc (GvAV (PL_defgv)) : 0;	434	c->defav = c->save & CORO_SAVE_DEFAV ? (AV *)SvREFCNT_inc (GvAV (PL_defgv)) : 0;
393	c->defsv = c->save & CORO_SAVE_DEFSV ? SvREFCNT_inc (DEFSV) : 0;	435	c->defsv = c->save & CORO_SAVE_DEFSV ? SvREFCNT_inc (DEFSV) : 0;
394	c->errsv = c->save & CORO_SAVE_ERRSV ? SvREFCNT_inc (ERRSV) : 0;	436	c->errsv = c->save & CORO_SAVE_ERRSV ? SvREFCNT_inc (ERRSV) : 0;
		437	c->deffh = c->save & CORO_SAVE_DEFFH ? (GV *)SvREFCNT_inc (PL_defoutgv) : 0;
395	c->irssv = c->save & CORO_SAVE_IRSSV ? SvREFCNT_inc (PL_rs) : 0;	438	c->irssv = c->save & CORO_SAVE_IRSSV ? SvREFCNT_inc (PL_rs) : 0;
396		439
397	#define VAR(name,type)c->name = PL_ ## name;	440	#define VAR(name,type)c->name = PL_ ## name;
398	# include "state.h"	441	# include "state.h"
399	#undef VAR	442	#undef VAR
…		…
403	* allocate various perl stacks. This is an exact copy	446	* allocate various perl stacks. This is an exact copy
404	* of perl.c:init_stacks, except that it uses less memory	447	* of perl.c:init_stacks, except that it uses less memory
405	* on the (sometimes correct) assumption that coroutines do	448	* on the (sometimes correct) assumption that coroutines do
406	* not usually need a lot of stackspace.	449	* not usually need a lot of stackspace.
407	*/	450	*/
408	#if USE_PERL_INIT_STACKS	451	#if CORO_PREFER_PERL_FUNCTIONS
409	# define coro_init_stacks init_stacks	452	# define coro_init_stacks init_stacks
410	#else	453	#else
411
412	static void	454	static void
413	coro_init_stacks ()	455	coro_init_stacks (pTHX)
414	{	456	{
415	PL_curstackinfo = new_stackinfo(128, 1024/sizeof(PERL_CONTEXT));	457	PL_curstackinfo = new_stackinfo(128, 1024/sizeof(PERL_CONTEXT));
416	PL_curstackinfo->si_type = PERLSI_MAIN;	458	PL_curstackinfo->si_type = PERLSI_MAIN;
417	PL_curstack = PL_curstackinfo->si_stack;	459	PL_curstack = PL_curstackinfo->si_stack;
418	PL_mainstack = PL_curstack; /* remember in case we switch stacks */	460	PL_mainstack = PL_curstack; /* remember in case we switch stacks */
…		…
446	New(54,PL_retstack,16,OP*);	488	New(54,PL_retstack,16,OP*);
447	PL_retstack_ix = 0;	489	PL_retstack_ix = 0;
448	PL_retstack_max = 16;	490	PL_retstack_max = 16;
449	#endif	491	#endif
450	}	492	}
		493	#endif
451		494
452	/*	495	/*
453	* destroy the stacks, the callchain etc...	496	* destroy the stacks, the callchain etc...
454	*/	497	*/
455	static void	498	static void
456	coro_destroy_stacks ()	499	coro_destroy_stacks (pTHX)
457	{	500	{
458	if (!IN_DESTRUCT)	501	if (!IN_DESTRUCT)
459	{	502	{
460	/* restore all saved variables and stuff */	503	/* restore all saved variables and stuff */
461	LEAVE_SCOPE (0);	504	LEAVE_SCOPE (0);
…		…
463		506
464	/* free all temporaries */	507	/* free all temporaries */
465	FREETMPS;	508	FREETMPS;
466	assert (PL_tmps_ix == -1);	509	assert (PL_tmps_ix == -1);
467		510
		511	/* unwind all extra stacks */
468	POPSTACK_TO (PL_mainstack);	512	POPSTACK_TO (PL_mainstack);
		513
		514	/* unwind main stack */
		515	dounwind (-1);
469	}	516	}
470		517
471	while (PL_curstackinfo->si_next)	518	while (PL_curstackinfo->si_next)
472	PL_curstackinfo = PL_curstackinfo->si_next;	519	PL_curstackinfo = PL_curstackinfo->si_next;
473		520
…		…
489	Safefree (PL_savestack);	536	Safefree (PL_savestack);
490	#if !PERL_VERSION_ATLEAST (5,9,0)	537	#if !PERL_VERSION_ATLEAST (5,9,0)
491	Safefree (PL_retstack);	538	Safefree (PL_retstack);
492	#endif	539	#endif
493	}	540	}
494	#endif
495		541
		542	/ coroutine stack handling **********************************************/
		543
496	static void	544	static void
497	setup_coro (struct coro *coro)	545	setup_coro (pTHX_ struct coro *coro)
498	{	546	{
499	/*	547	/*
500	* emulate part of the perl startup here.	548	* emulate part of the perl startup here.
501	*/	549	*/
502
503	coro_init_stacks ();	550	coro_init_stacks (aTHX);
504		551
505	PL_curcop = &PL_compiling;	552	PL_curcop = &PL_compiling;
506	PL_in_eval = EVAL_NULL;	553	PL_in_eval = EVAL_NULL;
		554	PL_comppad = 0;
507	PL_curpm = 0;	555	PL_curpm = 0;
508	PL_localizing = 0;	556	PL_localizing = 0;
509	PL_dirty = 0;	557	PL_dirty = 0;
510	PL_restartop = 0;	558	PL_restartop = 0;
511		559
…		…
530		578
531	ENTER; /* necessary e.g. for dounwind */	579	ENTER; /* necessary e.g. for dounwind */
532	}	580	}
533		581
534	static void	582	static void
535	free_coro_mortal ()	583	free_coro_mortal (pTHX)
536	{	584	{
537	if (coro_mortal)	585	if (coro_mortal)
538	{	586	{
539	SvREFCNT_dec (coro_mortal);	587	SvREFCNT_dec (coro_mortal);
540	coro_mortal = 0;	588	coro_mortal = 0;
541	}	589	}
542	}	590	}
543		591
544	/* inject a fake call to Coro::State::_cctx_init into the execution */	592	/* inject a fake call to Coro::State::_cctx_init into the execution */
		593	/* _cctx_init shoukld be careful, as it could be called at almost any time */
		594	/* during execution of a pelr program */
545	static void NOINLINE	595	static void NOINLINE
546	prepare_cctx (coro_cctx *cctx)	596	prepare_cctx (pTHX_ coro_cctx *cctx)
547	{	597	{
548	dSP;	598	dSP;
549	LOGOP myop;	599	LOGOP myop;
550		600
551	Zero (&myop, 1, LOGOP);	601	Zero (&myop, 1, LOGOP);
…		…
560	PL_op = (OP *)&myop;	610	PL_op = (OP *)&myop;
561	PL_op = PL_ppaddr[OP_ENTERSUB](aTHX);	611	PL_op = PL_ppaddr[OP_ENTERSUB](aTHX);
562	SPAGAIN;	612	SPAGAIN;
563	}	613	}
564		614
		615	/*
		616	* this is a _very_ stripped down perl interpreter ;)
		617	*/
565	static void	618	static void
566	coro_run (void *arg)	619	coro_run (void *arg)
567	{	620	{
		621	dTHX;
		622
568	/* coro_run is the alternative tail of transfer(), so unlock here. */	623	/* coro_run is the alternative tail of transfer(), so unlock here. */
569	UNLOCK;	624	UNLOCK;
570		625
571	/*
572	* this is a _very_ stripped down perl interpreter ;)
573	*/
574	PL_top_env = &PL_start_env;	626	PL_top_env = &PL_start_env;
575		627
576	/* inject call to cctx_init */	628	/* inject a fake subroutine call to cctx_init */
577	prepare_cctx ((coro_cctx *)arg);	629	prepare_cctx (aTHX_ (coro_cctx *)arg);
578		630
579	/* somebody will hit me for both perl_run and PL_restartop */	631	/* somebody or something will hit me for both perl_run and PL_restartop */
580	PL_restartop = PL_op;	632	PL_restartop = PL_op;
581	perl_run (PL_curinterp);	633	perl_run (PL_curinterp);
582		634
583	fputs ("FATAL: C coroutine fell over the edge of the world, aborting. Did you call exit in a coroutine?\n", stderr);	635	/* If perl-run returns we assume exit() was being called, which */
584	abort ();	636	/* seems to be the only valid (non-bug) reason for perl_run to return. */
		637	/* We try to exit by jumping to the bootstrap-time "top" top_env, as */
		638	/* we cannot restore the "main" coroutine as Coro has no such concept */
		639	PL_top_env = main_top_env;
		640	JMPENV_JUMP (2); /* I do not feel well about the hardcoded 2 at all */
585	}	641	}
586		642
587	static coro_cctx *	643	static coro_cctx *
588	cctx_new ()	644	cctx_new ()
589	{	645	{
590	coro_cctx *cctx;	646	coro_cctx *cctx;
		647	void *stack_start;
		648	size_t stack_size;
591		649
592	++cctx_count;	650	++cctx_count;
593		651
594	Newz (0, cctx, 1, coro_cctx);	652	Newz (0, cctx, 1, coro_cctx);
595		653
596	#if HAVE_MMAP	654	#if HAVE_MMAP
597		655
598	cctx->ssize = ((STACKSIZE * sizeof (long) + PAGESIZE - 1) / PAGESIZE + STACKGUARD) * PAGESIZE;	656	cctx->ssize = ((coro_stacksize * sizeof (long) + PAGESIZE - 1) / PAGESIZE + CORO_STACKGUARD) * PAGESIZE;
599	/* mmap supposedly does allocate-on-write for us */	657	/* mmap supposedly does allocate-on-write for us */
600	cctx->sptr = mmap (0, cctx->ssize, PROT_EXEC\|PROT_READ\|PROT_WRITE, MAP_PRIVATE\|MAP_ANONYMOUS, 0, 0);	658	cctx->sptr = mmap (0, cctx->ssize, PROT_EXEC\|PROT_READ\|PROT_WRITE, MAP_PRIVATE\|MAP_ANONYMOUS, 0, 0);
601		659
602	if (cctx->sptr == (void *)-1)	660	if (cctx->sptr != (void *)-1)
603	{
604	perror ("FATAL: unable to mmap stack for coroutine");
605	_exit (EXIT_FAILURE);
606	}	661	{
607
608	# if STACKGUARD	662	# if CORO_STACKGUARD
609	mprotect (cctx->sptr, STACKGUARD * PAGESIZE, PROT_NONE);	663	mprotect (cctx->sptr, CORO_STACKGUARD * PAGESIZE, PROT_NONE);
610	# endif	664	# endif
		665	stack_start = CORO_STACKGUARD * PAGESIZE + (char *)cctx->sptr;
		666	stack_size = cctx->ssize - CORO_STACKGUARD * PAGESIZE;
		667	cctx->mapped = 1;
		668	}
		669	else
		670	#endif
		671	{
		672	cctx->ssize = coro_stacksize * (long)sizeof (long);
		673	New (0, cctx->sptr, coro_stacksize, long);
611		674
612	#else
613
614	cctx->ssize = STACKSIZE * (long)sizeof (long);
615	New (0, cctx->sptr, STACKSIZE, long);
616
617	if (!cctx->sptr)	675	if (!cctx->sptr)
618	{	676	{
619	perror ("FATAL: unable to malloc stack for coroutine");	677	perror ("FATAL: unable to allocate stack for coroutine");
620	_exit (EXIT_FAILURE);	678	_exit (EXIT_FAILURE);
621	}	679	}
622		680
623	#endif	681	stack_start = cctx->sptr;
		682	stack_size = cctx->ssize;
		683	}
624		684
625	#if USE_VALGRIND	685	REGISTER_STACK (cctx, (char )stack_start, (char )stack_start + stack_size);
626	cctx->valgrind_id = VALGRIND_STACK_REGISTER (
627	STACKGUARD * PAGESIZE + (char *)cctx->sptr,
628	cctx->ssize + (char *)cctx->sptr
629	);
630	#endif
631
632	coro_create (&cctx->cctx, coro_run, (void *)cctx, cctx->sptr, cctx->ssize);	686	coro_create (&cctx->cctx, coro_run, (void *)cctx, stack_start, stack_size);
633		687
634	return cctx;	688	return cctx;
635	}	689	}
636		690
637	static void	691	static void
…		…
640	if (!cctx)	694	if (!cctx)
641	return;	695	return;
642		696
643	--cctx_count;	697	--cctx_count;
644		698
645	#if USE_VALGRIND	699	#if CORO_USE_VALGRIND
646	VALGRIND_STACK_DEREGISTER (cctx->valgrind_id);	700	VALGRIND_STACK_DEREGISTER (cctx->valgrind_id);
647	#endif	701	#endif
648		702
649	#if HAVE_MMAP	703	#if HAVE_MMAP
		704	if (cctx->mapped)
650	munmap (cctx->sptr, cctx->ssize);	705	munmap (cctx->sptr, cctx->ssize);
651	#else	706	else
		707	#endif
652	Safefree (cctx->sptr);	708	Safefree (cctx->sptr);
653	#endif
654		709
655	Safefree (cctx);	710	Safefree (cctx);
656	}	711	}
657		712
658	static coro_cctx *	713	static coro_cctx *
659	cctx_get ()	714	cctx_get (pTHX)
660	{	715	{
661	coro_cctx *cctx;
662
663	if (cctx_first)	716	while (cctx_first)
664	{	717	{
665	cctx = cctx_first;	718	coro_cctx *cctx = cctx_first;
666	cctx_first = cctx->next;	719	cctx_first = cctx->next;
667	--cctx_idle;	720	--cctx_idle;
		721
		722	if (cctx->ssize >= coro_stacksize)
		723	return cctx;
		724
		725	cctx_destroy (cctx);
668	}	726	}
669	else	727
670	{
671	cctx = cctx_new ();
672	PL_op = PL_op->op_next;	728	PL_op = PL_op->op_next;
673	}
674
675	return cctx;	729	return cctx_new ();
676	}	730	}
677		731
678	static void	732	static void
679	cctx_put (coro_cctx *cctx)	733	cctx_put (coro_cctx *cctx)
680	{	734	{
…		…
692	++cctx_idle;	746	++cctx_idle;
693	cctx->next = cctx_first;	747	cctx->next = cctx_first;
694	cctx_first = cctx;	748	cctx_first = cctx;
695	}	749	}
696		750
		751	/ coroutine switching ***************************************************/
		752
697	/* never call directly, always through the coro_state_transfer global variable */	753	/* never call directly, always through the coro_state_transfer global variable */
698	static void NOINLINE	754	static void NOINLINE
699	transfer (struct coro prev, struct coro next)	755	transfer (pTHX_ struct coro prev, struct coro next)
700	{	756	{
701	dSTACKLEVEL;	757	dSTACKLEVEL;
702		758
703	/* sometimes transfer is only called to set idle_sp */	759	/* sometimes transfer is only called to set idle_sp */
704	if (!next)	760	if (!next)
705	{	761	{
706	((coro_cctx *)prev)->idle_sp = STACKLEVEL;	762	((coro_cctx *)prev)->idle_sp = STACKLEVEL;
707	assert (((coro_cctx )prev)->top_env = PL_top_env); / just for the side effetc when assert is enabled */	763	assert (((coro_cctx )prev)->idle_te = PL_top_env); / just for the side-effect when asserts are enabled */
708	}	764	}
709	else if (prev != next)	765	else if (prev != next)
710	{	766	{
711	coro_cctx *prev__cctx;	767	coro_cctx *prev__cctx;
712		768
…		…
724	croak ("Coro::State::transfer called with non-running prev Coro::State, but can only transfer from running states");	780	croak ("Coro::State::transfer called with non-running prev Coro::State, but can only transfer from running states");
725		781
726	if (next->flags & CF_RUNNING)	782	if (next->flags & CF_RUNNING)
727	croak ("Coro::State::transfer called with running next Coro::State, but can only transfer to inactive states");	783	croak ("Coro::State::transfer called with running next Coro::State, but can only transfer to inactive states");
728		784
		785	if (next->flags & CF_DESTROYED)
		786	croak ("Coro::State::transfer called with destroyed next Coro::State, but can only transfer to inactive states");
		787
729	prev->flags &= ~CF_RUNNING;	788	prev->flags &= ~CF_RUNNING;
730	next->flags \|= CF_RUNNING;	789	next->flags \|= CF_RUNNING;
731		790
732	LOCK;	791	LOCK;
733		792
734	if (next->flags & CF_NEW)	793	if (next->flags & CF_NEW)
735	{	794	{
736	/* need to start coroutine */	795	/* need to start coroutine */
737	next->flags &= ~CF_NEW;	796	next->flags &= ~CF_NEW;
738	/* first get rid of the old state */	797	/* first get rid of the old state */
739	save_perl (prev);	798	save_perl (aTHX_ prev);
740	/* setup coroutine call */	799	/* setup coroutine call */
741	setup_coro (next);	800	setup_coro (aTHX_ next);
742	/* need a new stack */	801	/* need a new stack */
743	assert (!next->cctx);	802	assert (!next->cctx);
744	}	803	}
745	else	804	else
746	{	805	{
747	/* coroutine already started */	806	/* coroutine already started */
748	save_perl (prev);	807	save_perl (aTHX_ prev);
749	load_perl (next);	808	load_perl (aTHX_ next);
750	}	809	}
751		810
752	prev__cctx = prev->cctx;	811	prev__cctx = prev->cctx;
753		812
754	/* possibly "free" the cctx */	813	/* possibly "free" the cctx */
755	if (prev__cctx->idle_sp == STACKLEVEL)	814	if (prev__cctx->idle_sp == STACKLEVEL)
756	{	815	{
757	/* I assume that STACKLEVEL is a stronger indicator than PL_top_env changes */	816	/* I assume that STACKLEVEL is a stronger indicator than PL_top_env changes */
758	assert (PL_top_env == prev__cctx->top_env);	817	assert (("ERROR: current top_env must equal previous top_env", PL_top_env == prev__cctx->idle_te));
759		818
760	prev->cctx = 0;	819	prev->cctx = 0;
761		820
762	cctx_put (prev__cctx);	821	cctx_put (prev__cctx);
763	prev__cctx->inuse = 0;	822	prev__cctx->inuse = 0;
764	}	823	}
765		824
766	if (!next->cctx)	825	if (!next->cctx)
767	{	826	{
768	next->cctx = cctx_get ();	827	next->cctx = cctx_get (aTHX);
769	assert (!next->cctx->inuse);	828	assert (!next->cctx->inuse);
770	next->cctx->inuse = 1;	829	next->cctx->inuse = 1;
771	}	830	}
772		831
773	if (prev__cctx != next->cctx)	832	if (prev__cctx != next->cctx)
…		…
775	prev__cctx->top_env = PL_top_env;	834	prev__cctx->top_env = PL_top_env;
776	PL_top_env = next->cctx->top_env;	835	PL_top_env = next->cctx->top_env;
777	coro_transfer (&prev__cctx->cctx, &next->cctx->cctx);	836	coro_transfer (&prev__cctx->cctx, &next->cctx->cctx);
778	}	837	}
779		838
780	free_coro_mortal ();	839	free_coro_mortal (aTHX);
781
782	UNLOCK;	840	UNLOCK;
783	}	841	}
784	}	842	}
785		843
786	struct transfer_args	844	struct transfer_args
787	{	845	{
788	struct coro prev, next;	846	struct coro prev, next;
789	};	847	};
790		848
791	#define TRANSFER(ta) transfer ((ta).prev, (ta).next)	849	#define TRANSFER(ta) transfer (aTHX_ (ta).prev, (ta).next)
792		850
		851	/ high level stuff ******************************************************/
		852
793	static void	853	static int
794	coro_state_destroy (struct coro *coro)	854	coro_state_destroy (pTHX_ struct coro *coro)
795	{	855	{
796	if (coro->refcnt--)	856	if (coro->flags & CF_DESTROYED)
797	return;	857	return 0;
		858
		859	coro->flags \|= CF_DESTROYED;
		860
		861	if (coro->flags & CF_READY)
		862	{
		863	/* reduce nready, as destroying a ready coro effectively unreadies it */
		864	/* alternative: look through all ready queues and remove the coro */
		865	LOCK;
		866	--coro_nready;
		867	UNLOCK;
		868	}
		869	else
		870	coro->flags \|= CF_READY; /* make sure it is NOT put into the readyqueue */
798		871
799	if (coro->mainstack && coro->mainstack != main_mainstack)	872	if (coro->mainstack && coro->mainstack != main_mainstack)
800	{	873	{
801	struct coro temp;	874	struct coro temp;
		875
		876	assert (!(coro->flags & CF_RUNNING));
		877
802	Zero (&temp, 1, struct coro);	878	Zero (&temp, 1, struct coro);
803	temp.save = CORO_SAVE_ALL;	879	temp.save = CORO_SAVE_DEF;
804		880
805	if (coro->flags & CF_RUNNING)	881	if (coro->flags & CF_RUNNING)
806	croak ("FATAL: tried to destroy currently running coroutine");	882	croak ("FATAL: tried to destroy currently running coroutine");
807		883
808	save_perl (&temp);	884	save_perl (aTHX_ &temp);
809	load_perl (coro);	885	load_perl (aTHX_ coro);
810		886
811	coro_destroy_stacks ();	887	coro_destroy_stacks (aTHX);
812		888
813	load_perl (&temp); /* this will get rid of defsv etc.. */	889	load_perl (aTHX_ &temp); /* this will get rid of defsv etc.. */
814		890
815	coro->mainstack = 0;	891	coro->mainstack = 0;
816	}	892	}
817		893
818	cctx_destroy (coro->cctx);	894	cctx_destroy (coro->cctx);
819	SvREFCNT_dec (coro->args);	895	SvREFCNT_dec (coro->args);
820	Safefree (coro);	896
		897	return 1;
821	}	898	}
822		899
823	static int	900	static int
824	coro_state_clear (pTHX_ SV sv, MAGIC mg)	901	coro_state_free (pTHX_ SV sv, MAGIC mg)
825	{	902	{
826	struct coro coro = (struct coro )mg->mg_ptr;	903	struct coro coro = (struct coro )mg->mg_ptr;
827	mg->mg_ptr = 0;	904	mg->mg_ptr = 0;
828		905
		906	if (--coro->refcnt < 0)
		907	{
829	coro_state_destroy (coro);	908	coro_state_destroy (aTHX_ coro);
		909	Safefree (coro);
		910	}
830		911
831	return 0;	912	return 0;
832	}	913	}
833		914
834	static int	915	static int
…		…
841	return 0;	922	return 0;
842	}	923	}
843		924
844	static MGVTBL coro_state_vtbl = {	925	static MGVTBL coro_state_vtbl = {
845	0, 0, 0, 0,	926	0, 0, 0, 0,
846	coro_state_clear,	927	coro_state_free,
847	0,	928	0,
848	#ifdef MGf_DUP	929	#ifdef MGf_DUP
849	coro_state_dup,	930	coro_state_dup,
850	#else	931	#else
851	# define MGf_DUP 0	932	# define MGf_DUP 0
852	#endif	933	#endif
853	};	934	};
854		935
855	static struct coro *	936	static struct coro *
856	SvSTATE (SV *coro)	937	SvSTATE_ (pTHX_ SV *coro)
857	{	938	{
858	HV *stash;	939	HV *stash;
859	MAGIC *mg;	940	MAGIC *mg;
860		941
861	if (SvROK (coro))	942	if (SvROK (coro))
…		…
867	/* very slow, but rare, check */	948	/* very slow, but rare, check */
868	if (!sv_derived_from (sv_2mortal (newRV_inc (coro)), "Coro::State"))	949	if (!sv_derived_from (sv_2mortal (newRV_inc (coro)), "Coro::State"))
869	croak ("Coro::State object required");	950	croak ("Coro::State object required");
870	}	951	}
871		952
872	mg = SvMAGIC (coro);	953	mg = CORO_MAGIC (coro);
873	assert (mg->mg_type == PERL_MAGIC_ext);
874	return (struct coro *)mg->mg_ptr;	954	return (struct coro *)mg->mg_ptr;
875	}	955	}
876		956
		957	#define SvSTATE(sv) SvSTATE_ (aTHX_ (sv))
		958
877	static void	959	static void
878	prepare_transfer (struct transfer_args ta, SV prev_sv, SV *next_sv)	960	prepare_transfer (pTHX_ struct transfer_args ta, SV prev_sv, SV *next_sv)
879	{	961	{
880	ta->prev = SvSTATE (prev_sv);	962	ta->prev = SvSTATE (prev_sv);
881	ta->next = SvSTATE (next_sv);	963	ta->next = SvSTATE (next_sv);
882	}	964	}
883		965
884	static void	966	static void
885	api_transfer (SV prev_sv, SV next_sv)	967	api_transfer (SV prev_sv, SV next_sv)
886	{	968	{
		969	dTHX;
887	struct transfer_args ta;	970	struct transfer_args ta;
888		971
889	prepare_transfer (&ta, prev_sv, next_sv);	972	prepare_transfer (aTHX_ &ta, prev_sv, next_sv);
890	TRANSFER (ta);	973	TRANSFER (ta);
891	}	974	}
892		975
893	static int	976	static int
894	api_save (SV *coro_sv, int new_save)	977	api_save (SV *coro_sv, int new_save)
895	{	978	{
		979	dTHX;
896	struct coro *coro = SvSTATE (coro_sv);	980	struct coro *coro = SvSTATE (coro_sv);
897	int old_save = coro->save;	981	int old_save = coro->save;
898		982
899	if (new_save >= 0)	983	if (new_save >= 0)
900	coro->save = new_save;	984	coro->save = new_save;
…		…
902	return old_save;	986	return old_save;
903	}	987	}
904		988
905	/ Coro ******************************************************************/	989	/ Coro ******************************************************************/
906		990
907	#define PRIO_MAX 3
908	#define PRIO_HIGH 1
909	#define PRIO_NORMAL 0
910	#define PRIO_LOW -1
911	#define PRIO_IDLE -3
912	#define PRIO_MIN -4
913
914	/* for Coro.pm */
915	static SV *coro_current;
916	static AV *coro_ready [PRIO_MAX-PRIO_MIN+1];
917	static int coro_nready;
918
919	static void	991	static void
920	coro_enq (SV *coro_sv)	992	coro_enq (pTHX_ SV *coro_sv)
921	{	993	{
922	av_push (coro_ready [SvSTATE (coro_sv)->prio - PRIO_MIN], coro_sv);	994	av_push (coro_ready [SvSTATE (coro_sv)->prio - PRIO_MIN], coro_sv);
923	coro_nready++;
924	}	995	}
925		996
926	static SV *	997	static SV *
927	coro_deq (int min_prio)	998	coro_deq (pTHX_ int min_prio)
928	{	999	{
929	int prio = PRIO_MAX - PRIO_MIN;	1000	int prio = PRIO_MAX - PRIO_MIN;
930		1001
931	min_prio -= PRIO_MIN;	1002	min_prio -= PRIO_MIN;
932	if (min_prio < 0)	1003	if (min_prio < 0)
933	min_prio = 0;	1004	min_prio = 0;
934		1005
935	for (prio = PRIO_MAX - PRIO_MIN + 1; --prio >= min_prio; )	1006	for (prio = PRIO_MAX - PRIO_MIN + 1; --prio >= min_prio; )
936	if (AvFILLp (coro_ready [prio]) >= 0)	1007	if (AvFILLp (coro_ready [prio]) >= 0)
937	{
938	coro_nready--;
939	return av_shift (coro_ready [prio]);	1008	return av_shift (coro_ready [prio]);
940	}
941		1009
942	return 0;	1010	return 0;
943	}	1011	}
944		1012
945	static int	1013	static int
946	api_ready (SV *coro_sv)	1014	api_ready (SV *coro_sv)
947	{	1015	{
		1016	dTHX;
948	struct coro *coro;	1017	struct coro *coro;
949		1018
950	if (SvROK (coro_sv))	1019	if (SvROK (coro_sv))
951	coro_sv = SvRV (coro_sv);	1020	coro_sv = SvRV (coro_sv);
952		1021
953	coro = SvSTATE (coro_sv);	1022	coro = SvSTATE (coro_sv);
954		1023
955	if (coro->flags & CF_READY)	1024	if (coro->flags & CF_READY)
956	return 0;	1025	return 0;
957		1026
958	#if 0 /* this is actually harmless */
959	if (coro->flags & CF_RUNNING)
960	croak ("Coro::ready called on currently running coroutine");
961	#endif
962
963	coro->flags \|= CF_READY;	1027	coro->flags \|= CF_READY;
964		1028
965	LOCK;	1029	LOCK;
966	coro_enq (SvREFCNT_inc (coro_sv));	1030	coro_enq (aTHX_ SvREFCNT_inc (coro_sv));
		1031	++coro_nready;
967	UNLOCK;	1032	UNLOCK;
968		1033
969	return 1;	1034	return 1;
970	}	1035	}
971		1036
972	static int	1037	static int
973	api_is_ready (SV *coro_sv)	1038	api_is_ready (SV *coro_sv)
974	{	1039	{
		1040	dTHX;
975	return !!SvSTATE (coro_sv)->flags & CF_READY;	1041	return !!(SvSTATE (coro_sv)->flags & CF_READY);
976	}	1042	}
977		1043
978	static void	1044	static void
979	prepare_schedule (struct transfer_args *ta)	1045	prepare_schedule (pTHX_ struct transfer_args *ta)
980	{	1046	{
981	SV prev, next;	1047	SV prev_sv, next_sv;
982		1048
983	for (;;)	1049	for (;;)
984	{	1050	{
985	LOCK;	1051	LOCK;
986	next = coro_deq (PRIO_MIN);	1052	next_sv = coro_deq (aTHX_ PRIO_MIN);
		1053
		1054	/* nothing to schedule: call the idle handler */
		1055	if (!next_sv)
		1056	{
		1057	dSP;
		1058	UNLOCK;
		1059
		1060	ENTER;
		1061	SAVETMPS;
		1062
		1063	PUSHMARK (SP);
		1064	PUTBACK;
		1065	call_sv (get_sv ("Coro::idle", FALSE), G_DISCARD);
		1066
		1067	FREETMPS;
		1068	LEAVE;
		1069	continue;
		1070	}
		1071
		1072	ta->next = SvSTATE (next_sv);
		1073
		1074	/* cannot transfer to destroyed coros, skip and look for next */
		1075	if (ta->next->flags & CF_DESTROYED)
		1076	{
		1077	UNLOCK;
		1078	SvREFCNT_dec (next_sv);
		1079	/* coro_nready is already taken care of by destroy */
		1080	continue;
		1081	}
		1082
		1083	--coro_nready;
987	UNLOCK;	1084	UNLOCK;
988
989	if (next)
990	break;	1085	break;
991
992	{
993	dSP;
994
995	ENTER;
996	SAVETMPS;
997
998	PUSHMARK (SP);
999	PUTBACK;
1000	call_sv (get_sv ("Coro::idle", FALSE), G_DISCARD);
1001
1002	FREETMPS;
1003	LEAVE;
1004	}	1086	}
1005	}
1006
1007	prev = SvRV (coro_current);
1008	SvRV_set (coro_current, next);
1009		1087
1010	/* free this only after the transfer */	1088	/* free this only after the transfer */
1011	LOCK;	1089	prev_sv = SvRV (coro_current);
1012	free_coro_mortal ();	1090	SvRV_set (coro_current, next_sv);
1013	UNLOCK;
1014	coro_mortal = prev;
1015
1016	assert (!SvROK(prev));//D
1017	assert (!SvROK(next));//D
1018
1019	ta->prev = SvSTATE (prev);	1091	ta->prev = SvSTATE (prev_sv);
1020	ta->next = SvSTATE (next);
1021		1092
1022	assert (ta->next->flags & CF_READY);	1093	assert (ta->next->flags & CF_READY);
1023	ta->next->flags &= ~CF_READY;	1094	ta->next->flags &= ~CF_READY;
1024	}
1025		1095
		1096	LOCK;
		1097	free_coro_mortal (aTHX);
		1098	coro_mortal = prev_sv;
		1099	UNLOCK;
		1100	}
		1101
1026	static void	1102	static void
1027	prepare_cede (struct transfer_args *ta)	1103	prepare_cede (pTHX_ struct transfer_args *ta)
1028	{	1104	{
1029	api_ready (coro_current);	1105	api_ready (coro_current);
1030
1031	prepare_schedule (ta);	1106	prepare_schedule (aTHX_ ta);
		1107	}
		1108
		1109	static int
		1110	prepare_cede_notself (pTHX_ struct transfer_args *ta)
		1111	{
		1112	if (coro_nready)
		1113	{
		1114	SV *prev = SvRV (coro_current);
		1115	prepare_schedule (aTHX_ ta);
		1116	api_ready (prev);
		1117	return 1;
		1118	}
		1119	else
		1120	return 0;
1032	}	1121	}
1033		1122
1034	static void	1123	static void
1035	api_schedule (void)	1124	api_schedule (void)
1036	{	1125	{
		1126	dTHX;
1037	struct transfer_args ta;	1127	struct transfer_args ta;
1038		1128
1039	prepare_schedule (&ta);	1129	prepare_schedule (aTHX_ &ta);
1040	TRANSFER (ta);	1130	TRANSFER (ta);
1041	}	1131	}
1042		1132
1043	static void	1133	static int
1044	api_cede (void)	1134	api_cede (void)
1045	{	1135	{
		1136	dTHX;
1046	struct transfer_args ta;	1137	struct transfer_args ta;
1047		1138
1048	prepare_cede (&ta);	1139	prepare_cede (aTHX_ &ta);
		1140
		1141	if (ta.prev != ta.next)
		1142	{
1049	TRANSFER (ta);	1143	TRANSFER (ta);
		1144	return 1;
		1145	}
		1146	else
		1147	return 0;
		1148	}
		1149
		1150	static int
		1151	api_cede_notself (void)
		1152	{
		1153	dTHX;
		1154	struct transfer_args ta;
		1155
		1156	if (prepare_cede_notself (aTHX_ &ta))
		1157	{
		1158	TRANSFER (ta);
		1159	return 1;
		1160	}
		1161	else
		1162	return 0;
1050	}	1163	}
1051		1164
1052	MODULE = Coro::State PACKAGE = Coro::State	1165	MODULE = Coro::State PACKAGE = Coro::State
1053		1166
1054	PROTOTYPES: DISABLE	1167	PROTOTYPES: DISABLE
…		…
1064		1177
1065	newCONSTSUB (coro_state_stash, "SAVE_DEFAV", newSViv (CORO_SAVE_DEFAV));	1178	newCONSTSUB (coro_state_stash, "SAVE_DEFAV", newSViv (CORO_SAVE_DEFAV));
1066	newCONSTSUB (coro_state_stash, "SAVE_DEFSV", newSViv (CORO_SAVE_DEFSV));	1179	newCONSTSUB (coro_state_stash, "SAVE_DEFSV", newSViv (CORO_SAVE_DEFSV));
1067	newCONSTSUB (coro_state_stash, "SAVE_ERRSV", newSViv (CORO_SAVE_ERRSV));	1180	newCONSTSUB (coro_state_stash, "SAVE_ERRSV", newSViv (CORO_SAVE_ERRSV));
1068	newCONSTSUB (coro_state_stash, "SAVE_IRSSV", newSViv (CORO_SAVE_IRSSV));	1181	newCONSTSUB (coro_state_stash, "SAVE_IRSSV", newSViv (CORO_SAVE_IRSSV));
		1182	newCONSTSUB (coro_state_stash, "SAVE_DEFFH", newSViv (CORO_SAVE_DEFFH));
		1183	newCONSTSUB (coro_state_stash, "SAVE_DEF", newSViv (CORO_SAVE_DEF));
1069	newCONSTSUB (coro_state_stash, "SAVE_ALL", newSViv (CORO_SAVE_ALL));	1184	newCONSTSUB (coro_state_stash, "SAVE_ALL", newSViv (CORO_SAVE_ALL));
1070		1185
1071	main_mainstack = PL_mainstack;	1186	main_mainstack = PL_mainstack;
		1187	main_top_env = PL_top_env;
		1188
		1189	while (main_top_env->je_prev)
		1190	main_top_env = main_top_env->je_prev;
1072		1191
1073	coroapi.ver = CORO_API_VERSION;	1192	coroapi.ver = CORO_API_VERSION;
1074	coroapi.transfer = api_transfer;	1193	coroapi.transfer = api_transfer;
1075		1194
1076	assert (("PRIO_NORMAL must be 0", !PRIO_NORMAL));	1195	assert (("PRIO_NORMAL must be 0", !PRIO_NORMAL));
…		…
1084	HV *hv;	1203	HV *hv;
1085	int i;	1204	int i;
1086		1205
1087	Newz (0, coro, 1, struct coro);	1206	Newz (0, coro, 1, struct coro);
1088	coro->args = newAV ();	1207	coro->args = newAV ();
1089	coro->save = CORO_SAVE_ALL;	1208	coro->save = CORO_SAVE_DEF;
1090	coro->flags = CF_NEW;	1209	coro->flags = CF_NEW;
1091		1210
1092	hv = newHV ();	1211	hv = newHV ();
1093	sv_magicext ((SV )hv, 0, PERL_MAGIC_ext, &coro_state_vtbl, (char )coro, 0)->mg_flags \|= MGf_DUP;	1212	sv_magicext ((SV )hv, 0, PERL_MAGIC_ext, &coro_state_vtbl, (char )coro, 0)->mg_flags \|= MGf_DUP;
1094	RETVAL = sv_bless (newRV_noinc ((SV *)hv), gv_stashpv (klass, 1));	1213	RETVAL = sv_bless (newRV_noinc ((SV *)hv), gv_stashpv (klass, 1));
…		…
1104	CODE:	1223	CODE:
1105	RETVAL = api_save (coro, new_save);	1224	RETVAL = api_save (coro, new_save);
1106	OUTPUT:	1225	OUTPUT:
1107	RETVAL	1226	RETVAL
1108		1227
		1228	int
		1229	save_also (SV *coro_sv, int save_also)
		1230	CODE:
		1231	{
		1232	struct coro *coro = SvSTATE (coro_sv);
		1233	RETVAL = coro->save;
		1234	coro->save \|= save_also;
		1235	}
		1236	OUTPUT:
		1237	RETVAL
		1238
1109	void	1239	void
1110	_set_stacklevel (...)	1240	_set_stacklevel (...)
1111	ALIAS:	1241	ALIAS:
1112	Coro::State::transfer = 1	1242	Coro::State::transfer = 1
1113	Coro::schedule = 2	1243	Coro::schedule = 2
1114	Coro::cede = 3	1244	Coro::cede = 3
		1245	Coro::cede_notself = 4
1115	CODE:	1246	CODE:
1116	{	1247	{
1117	struct transfer_args ta;	1248	struct transfer_args ta;
1118		1249
1119	switch (ix)	1250	switch (ix)
…		…
1125		1256
1126	case 1:	1257	case 1:
1127	if (items != 2)	1258	if (items != 2)
1128	croak ("Coro::State::transfer (prev,next) expects two arguments, not %d", items);	1259	croak ("Coro::State::transfer (prev,next) expects two arguments, not %d", items);
1129		1260
1130	prepare_transfer (&ta, ST (0), ST (1));	1261	prepare_transfer (aTHX_ &ta, ST (0), ST (1));
1131	break;	1262	break;
1132		1263
1133	case 2:	1264	case 2:
1134	prepare_schedule (&ta);	1265	prepare_schedule (aTHX_ &ta);
1135	break;	1266	break;
1136		1267
1137	case 3:	1268	case 3:
1138	prepare_cede (&ta);	1269	prepare_cede (aTHX_ &ta);
		1270	break;
		1271
		1272	case 4:
		1273	if (!prepare_cede_notself (aTHX_ &ta))
		1274	XSRETURN_EMPTY;
		1275
1139	break;	1276	break;
1140	}	1277	}
1141		1278
		1279	BARRIER;
1142	TRANSFER (ta);	1280	TRANSFER (ta);
1143	}
1144		1281
1145	void	1282	if (GIMME_V != G_VOID && ta.next != ta.prev)
1146	_clone_state_from (SV dst, SV src)	1283	XSRETURN_YES;
		1284	}
		1285
		1286	bool
		1287	_destroy (SV *coro_sv)
1147	CODE:	1288	CODE:
1148	{	1289	RETVAL = coro_state_destroy (aTHX_ SvSTATE (coro_sv));
1149	struct coro *coro_src = SvSTATE (src);	1290	OUTPUT:
1150		1291	RETVAL
1151	sv_unmagic (SvRV (dst), PERL_MAGIC_ext);
1152
1153	++coro_src->refcnt;
1154	sv_magicext (SvRV (dst), 0, PERL_MAGIC_ext, &coro_state_vtbl, (char *)coro_src, 0)->mg_flags \|= MGf_DUP;
1155	}
1156		1292
1157	void	1293	void
1158	_exit (code)	1294	_exit (code)
1159	int code	1295	int code
1160	PROTOTYPE: $	1296	PROTOTYPE: $
1161	CODE:	1297	CODE:
1162	_exit (code);	1298	_exit (code);
1163		1299
1164	int	1300	int
		1301	cctx_stacksize (int new_stacksize = 0)
		1302	CODE:
		1303	RETVAL = coro_stacksize;
		1304	if (new_stacksize)
		1305	coro_stacksize = new_stacksize;
		1306	OUTPUT:
		1307	RETVAL
		1308
		1309	int
1165	cctx_count ()	1310	cctx_count ()
1166	CODE:	1311	CODE:
1167	RETVAL = cctx_count;	1312	RETVAL = cctx_count;
1168	OUTPUT:	1313	OUTPUT:
1169	RETVAL	1314	RETVAL
…		…
1197	coro_ready[i] = newAV ();	1342	coro_ready[i] = newAV ();
1198		1343
1199	{	1344	{
1200	SV *sv = perl_get_sv("Coro::API", 1);	1345	SV *sv = perl_get_sv("Coro::API", 1);
1201		1346
1202	coroapi.schedule = api_schedule;	1347	coroapi.schedule = api_schedule;
1203	coroapi.save = api_save;	1348	coroapi.save = api_save;
1204	coroapi.cede = api_cede;	1349	coroapi.cede = api_cede;
		1350	coroapi.cede_notself = api_cede_notself;
1205	coroapi.ready = api_ready;	1351	coroapi.ready = api_ready;
1206	coroapi.is_ready = api_is_ready;	1352	coroapi.is_ready = api_is_ready;
1207	coroapi.nready = &coro_nready;	1353	coroapi.nready = &coro_nready;
1208	coroapi.current = coro_current;	1354	coroapi.current = coro_current;
1209		1355
1210	GCoroAPI = &coroapi;	1356	GCoroAPI = &coroapi;
1211	sv_setiv (sv, (IV)&coroapi);	1357	sv_setiv (sv, (IV)&coroapi);
1212	SvREADONLY_on (sv);	1358	SvREADONLY_on (sv);
1213	}	1359	}
…		…
1229	RETVAL = coro->prio;	1375	RETVAL = coro->prio;
1230		1376
1231	if (items > 1)	1377	if (items > 1)
1232	{	1378	{
1233	if (ix)	1379	if (ix)
1234	newprio += coro->prio;	1380	newprio = coro->prio - newprio;
1235		1381
1236	if (newprio < PRIO_MIN) newprio = PRIO_MIN;	1382	if (newprio < PRIO_MIN) newprio = PRIO_MIN;
1237	if (newprio > PRIO_MAX) newprio = PRIO_MAX;	1383	if (newprio > PRIO_MAX) newprio = PRIO_MAX;
1238		1384
1239	coro->prio = newprio;	1385	coro->prio = newprio;
1240	}	1386	}
1241	}	1387	}
		1388	OUTPUT:
		1389	RETVAL
1242		1390
1243	SV *	1391	SV *
1244	ready (SV *self)	1392	ready (SV *self)
1245	PROTOTYPE: $	1393	PROTOTYPE: $
1246	CODE:	1394	CODE:

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Comparing Coro/Coro/State.xs (file contents): Revision 1.126 by root, Tue Dec 12 04:19:56 2006 UTC vs. Revision 1.148 by root, Fri Apr 13 12:56:55 2007 UTC

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Comparing Coro/Coro/State.xs (file contents):
Revision 1.126 by root, Tue Dec 12 04:19:56 2006 UTC vs.
Revision 1.148 by root, Fri Apr 13 12:56:55 2007 UTC