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

Comparing Coro/Coro/State.xs (file contents):
Revision 1.87 by root, Fri Nov 24 13:40:36 2006 UTC vs.
Revision 1.133 by root, Thu Jan 4 20:14:19 2007 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	#include <stdio.h>
		10	#include <errno.h>
		11	#include <assert.h>
		12
		13	#ifdef HAVE_MMAP
		14	# include <unistd.h>
		15	# include <sys/mman.h>
		16	# ifndef MAP_ANONYMOUS
		17	# ifdef MAP_ANON
		18	# define MAP_ANONYMOUS MAP_ANON
		19	# else
		20	# undef HAVE_MMAP
		21	# endif
		22	# endif
		23	# include <limits.h>
		24	# ifndef PAGESIZE
		25	# define PAGESIZE pagesize
		26	# define BOOT_PAGESIZE pagesize = sysconf (_SC_PAGESIZE)
		27	static long pagesize;
		28	# else
		29	# define BOOT_PAGESIZE (void)0
		30	# endif
		31	#else
		32	# define PAGESIZE 0
		33	# define BOOT_PAGESIZE (void)0
		34	#endif
		35
		36	#if USE_VALGRIND
		37	# include <valgrind/valgrind.h>
		38	#endif
		39
		40	/* the maximum number of idle cctx that will be pooled */
		41	#define MAX_IDLE_CCTX 8
		42
		43	#define PERL_VERSION_ATLEAST(a,b,c) \
		44	(PERL_REVISION > (a) \
		45	\|\| (PERL_REVISION == (a) \
		46	&& (PERL_VERSION > (b) \
		47	\|\| (PERL_VERSION == (b) && PERLSUBVERSION >= (c)))))
		48
		49	#if !PERL_VERSION_ATLEAST (5,6,0)
12	# ifndef PL_ppaddr	50	# ifndef PL_ppaddr
13	# define PL_ppaddr ppaddr	51	# define PL_ppaddr ppaddr
14	# endif	52	# endif
15	# ifndef call_sv	53	# ifndef call_sv
16	# define call_sv perl_call_sv	54	# define call_sv perl_call_sv
27	# ifndef IS_PADCONST	65	# ifndef IS_PADCONST
28	# define IS_PADCONST(v) 0	66	# define IS_PADCONST(v) 0
29	# endif	67	# endif
30	#endif	68	#endif
31		69
32	#include <errno.h>	70	/* 5.8.7 */
		71	#ifndef SvRV_set
		72	# define SvRV_set(s,v) SvRV(s) = (v)
		73	#endif
33		74
34	#if !__i386 && !__x86_64 && !__powerpc && !__m68k && !__alpha && !__mips && !__sparc64	75	#if !__i386 && !__x86_64 && !__powerpc && !__m68k && !__alpha && !__mips && !__sparc64
35	# undef STACKGUARD	76	# undef STACKGUARD
36	#endif	77	#endif
37		78
38	#ifndef STACKGUARD	79	#ifndef STACKGUARD
39	# define STACKGUARD 0	80	# define STACKGUARD 0
40	#endif	81	#endif
41		82
42	#ifdef HAVE_MMAP	83	/* prefer perl internal functions over our own? */
43	# include <unistd.h>	84	#ifndef PREFER_PERL_FUNCTIONS
44	# include <sys/mman.h>	85	# define PREFER_PERL_FUNCTIONS 0
45	# ifndef MAP_ANONYMOUS
46	# ifdef MAP_ANON
47	# define MAP_ANONYMOUS MAP_ANON
48	# else
49	# undef HAVE_MMAP
50	# endif
51	# endif	86	#endif
52	# include <limits.h>
53	# ifndef PAGESIZE
54	# define PAGESIZE pagesize
55	# define BOOT_PAGESIZE pagesize = sysconf (_SC_PAGESIZE)
56	static long pagesize;
57	# else
58	# define BOOT_PAGESIZE
59	# endif
60	#endif
61
62	#define SUB_INIT "Coro::State::initialize"
63	#define UCORO_STATE "_coro_state"
64		87
65	/* The next macro should declare a variable stacklevel that contains and approximation	88	/* The next macro should declare a variable stacklevel that contains and approximation
66	* to the current C stack pointer. Its property is that it changes with each call	89	* to the current C stack pointer. Its property is that it changes with each call
67	* and should be unique. */	90	* and should be unique. */
		91	#define dSTACKLEVEL int stacklevel
68	#define dSTACKLEVEL void *stacklevel = &stacklevel	92	#define STACKLEVEL ((void *)&stacklevel)
69		93
70	#define IN_DESTRUCT (PL_main_cv == Nullcv)	94	#define IN_DESTRUCT (PL_main_cv == Nullcv)
71		95
72	#define labs(l) ((l) >= 0 ? (l) : -(l))	96	#if __GNUC__ >= 3
		97	# define attribute(x) __attribute__(x)
		98	# define BARRIER __asm__ __volatile__ ("" : : : "memory")
		99	#else
		100	# define attribute(x)
		101	# define BARRIER
		102	#endif
		103
		104	#define NOINLINE attribute ((noinline))
73		105
74	#include "CoroAPI.h"	106	#include "CoroAPI.h"
75		107
76	#ifdef USE_ITHREADS	108	#ifdef USE_ITHREADS
77	static perl_mutex coro_mutex;	109	static perl_mutex coro_mutex;
…		…
80	#else	112	#else
81	# define LOCK (void)0	113	# define LOCK (void)0
82	# define UNLOCK (void)0	114	# define UNLOCK (void)0
83	#endif	115	#endif
84		116
		117	struct io_state
		118	{
		119	int errorno;
		120	I32 laststype;
		121	int laststatval;
		122	Stat_t statcache;
		123	};
		124
85	static struct CoroAPI coroapi;	125	static struct CoroAPI coroapi;
86	static AV main_mainstack; / used to differentiate between $main and others */	126	static AV main_mainstack; / used to differentiate between $main and others */
87	static HV *coro_state_stash;	127	static HV coro_state_stash, coro_stash;
88	static SV *ucoro_state_sv;
89	static U32 ucoro_state_hash;
90	static SV coro_mortal; / will be freed after next transfer */	128	static SV coro_mortal; / will be freed after next transfer */
91		129
92	/* this is actually not only the c stack but also c registers etc... */	130	static struct coro_cctx *cctx_first;
		131	static int cctx_count, cctx_idle;
		132
		133	/* this is a structure representing a c-level coroutine */
93	typedef struct {	134	typedef struct coro_cctx {
94	int refcnt; /* pointer reference counter */	135	struct coro_cctx *next;
95	int usecnt; /* shared by how many coroutines */
96	int gencnt; /* generation counter */
97		136
98	coro_context cctx;	137	/* the stack */
99
100	void *sptr;	138	void *sptr;
101	long ssize; /* positive == mmap, otherwise malloc */	139	long ssize; /* positive == mmap, otherwise malloc */
102	} coro_stack;
103		140
		141	/* cpu state */
		142	void idle_sp; / sp of top-level transfer/schedule/cede call */
		143	JMPENV idle_te; / same as idle_sp, but for top_env, TODO: remove once stable */
		144	JMPENV *top_env;
		145	coro_context cctx;
		146
		147	int inuse;
		148
		149	#if USE_VALGRIND
		150	int valgrind_id;
		151	#endif
		152	} coro_cctx;
		153
		154	enum {
		155	CF_RUNNING = 0x0001, /* coroutine is running */
		156	CF_READY = 0x0002, /* coroutine is ready */
		157	CF_NEW = 0x0004, /* has never been switched to */
		158	CF_DESTROYED = 0x0008, /* coroutine data has been freed */
		159	};
		160
		161	/* this is a structure representing a perl-level coroutine */
104	struct coro {	162	struct coro {
105	/* the optional C context */	163	/* the c coroutine allocated to this perl coroutine, if any */
106	coro_stack *stack;	164	coro_cctx *cctx;
107	void *cursp;
108	int gencnt;
109
110	/* optionally saved, might be zero */
111	AV *defav;
112	SV *defsv;
113	SV *errsv;
114
115	/* saved global state not related to stacks */
116	U8 dowarn;
117	I32 in_eval;
118
119	/* the stacks and related info (callchain etc..) */
120	PERL_SI *curstackinfo;
121	AV *curstack;
122	AV *mainstack;
123	SV **stack_sp;
124	OP *op;
125	SV **curpad;
126	AV *comppad;
127	CV *compcv;
128	SV **stack_base;
129	SV **stack_max;
130	SV **tmps_stack;
131	I32 tmps_floor;
132	I32 tmps_ix;
133	I32 tmps_max;
134	I32 *markstack;
135	I32 *markstack_ptr;
136	I32 *markstack_max;
137	I32 *scopestack;
138	I32 scopestack_ix;
139	I32 scopestack_max;
140	ANY *savestack;
141	I32 savestack_ix;
142	I32 savestack_max;
143	OP **retstack;
144	I32 retstack_ix;
145	I32 retstack_max;
146	PMOP *curpm;
147	COP *curcop;
148	JMPENV *top_env;
149
150	/* coro process data */
151	int prio;
152		165
153	/* data associated with this coroutine (initial args) */	166	/* data associated with this coroutine (initial args) */
154	AV *args;	167	AV *args;
155	int refcnt;	168	int refcnt;
		169	int save; /* CORO_SAVE flags */
		170	int flags; /* CF_ flags */
		171
		172	/* optionally saved, might be zero */
		173	AV defav; / @_ */
		174	SV defsv; / $_ */
		175	SV errsv; / $@ */
		176	SV irssv; / $/ */
		177	SV irssv_sv; / real $/ cache */
		178
		179	#define VAR(name,type) type name;
		180	# include "state.h"
		181	#undef VAR
		182
		183	/* coro process data */
		184	int prio;
156	};	185	};
157		186
158	typedef struct coro *Coro__State;	187	typedef struct coro *Coro__State;
159	typedef struct coro *Coro__State_or_hashref;	188	typedef struct coro *Coro__State_or_hashref;
160		189
161	static AV *	190	static AV *
162	coro_clone_padlist (pTHX_ CV *cv)	191	coro_clone_padlist (CV *cv)
163	{	192	{
164	AV *padlist = CvPADLIST (cv);	193	AV *padlist = CvPADLIST (cv);
165	AV newpadlist, newpad;	194	AV newpadlist, newpad;
166		195
167	newpadlist = newAV ();	196	newpadlist = newAV ();
168	AvREAL_off (newpadlist);	197	AvREAL_off (newpadlist);
169	#if PERL_VERSION < 9	198	#if PERL_VERSION_ATLEAST (5,9,0)
		199	Perl_pad_push (aTHX_ padlist, AvFILLp (padlist) + 1);
		200	#else
170	Perl_pad_push (aTHX_ padlist, AvFILLp (padlist) + 1, 1);	201	Perl_pad_push (aTHX_ padlist, AvFILLp (padlist) + 1, 1);
171	#else
172	Perl_pad_push (aTHX_ padlist, AvFILLp (padlist) + 1);
173	#endif	202	#endif
174	newpad = (AV *)AvARRAY (padlist)[AvFILLp (padlist)];	203	newpad = (AV *)AvARRAY (padlist)[AvFILLp (padlist)];
175	--AvFILLp (padlist);	204	--AvFILLp (padlist);
176		205
177	av_store (newpadlist, 0, SvREFCNT_inc (*av_fetch (padlist, 0, FALSE)));	206	av_store (newpadlist, 0, SvREFCNT_inc (*av_fetch (padlist, 0, FALSE)));
…		…
179		208
180	return newpadlist;	209	return newpadlist;
181	}	210	}
182		211
183	static void	212	static void
184	free_padlist (pTHX_ AV *padlist)	213	free_padlist (AV *padlist)
185	{	214	{
186	/* may be during global destruction */	215	/* may be during global destruction */
187	if (SvREFCNT (padlist))	216	if (SvREFCNT (padlist))
188	{	217	{
189	I32 i = AvFILLp (padlist);	218	I32 i = AvFILLp (padlist);
…		…
210	AV *padlist;	239	AV *padlist;
211	AV av = (AV )mg->mg_obj;	240	AV av = (AV )mg->mg_obj;
212		241
213	/* casting is fun. */	242	/* casting is fun. */
214	while (&PL_sv_undef != (SV )(padlist = (AV )av_pop (av)))	243	while (&PL_sv_undef != (SV )(padlist = (AV )av_pop (av)))
215	free_padlist (aTHX_ padlist);	244	free_padlist (padlist);
216		245
217	SvREFCNT_dec (av);	246	SvREFCNT_dec (av);
218		247
219	return 0;	248	return 0;
220	}	249	}
221		250
222	#define PERL_MAGIC_coro PERL_MAGIC_ext	251	#define PERL_MAGIC_coro PERL_MAGIC_ext
223		252
224	static MGVTBL vtbl_coro = {0, 0, 0, 0, coro_cv_free};	253	static MGVTBL vtbl_coro = {0, 0, 0, 0, coro_cv_free};
225		254
		255	#define CORO_MAGIC(cv) \
		256	SvMAGIC (cv) \
		257	? SvMAGIC (cv)->mg_type == PERL_MAGIC_coro \
		258	? SvMAGIC (cv) \
		259	: mg_find ((SV *)cv, PERL_MAGIC_coro) \
		260	: 0
		261
226	/* the next two functions merely cache the padlists */	262	/* the next two functions merely cache the padlists */
227	static void	263	static void
228	get_padlist (pTHX_ CV *cv)	264	get_padlist (CV *cv)
229	{	265	{
230	MAGIC mg = mg_find ((SV )cv, PERL_MAGIC_coro);	266	MAGIC *mg = CORO_MAGIC (cv);
		267	AV *av;
231		268
232	if (mg && AvFILLp ((AV *)mg->mg_obj) >= 0)	269	if (mg && AvFILLp ((av = (AV *)mg->mg_obj)) >= 0)
233	CvPADLIST (cv) = (AV )av_pop ((AV )mg->mg_obj);	270	CvPADLIST (cv) = (AV *)AvARRAY (av)[AvFILLp (av)--];
234	else	271	else
235	{	272	{
236	#if 0	273	#if PREFER_PERL_FUNCTIONS
237	/* this should work - but it doesn't :( */	274	/* this is probably cleaner, but also slower? */
238	CV *cp = Perl_cv_clone (aTHX_ cv);	275	CV *cp = Perl_cv_clone (cv);
239	CvPADLIST (cv) = CvPADLIST (cp);	276	CvPADLIST (cv) = CvPADLIST (cp);
240	CvPADLIST (cp) = 0;	277	CvPADLIST (cp) = 0;
241	SvREFCNT_dec (cp);	278	SvREFCNT_dec (cp);
242	#else	279	#else
243	CvPADLIST (cv) = coro_clone_padlist (aTHX_ cv);	280	CvPADLIST (cv) = coro_clone_padlist (cv);
244	#endif	281	#endif
245	}	282	}
246	}	283	}
247		284
248	static void	285	static void
249	put_padlist (pTHX_ CV *cv)	286	put_padlist (CV *cv)
250	{	287	{
251	MAGIC mg = mg_find ((SV )cv, PERL_MAGIC_coro);	288	MAGIC *mg = CORO_MAGIC (cv);
		289	AV *av;
252		290
253	if (!mg)	291	if (!mg)
254	{	292	{
255	sv_magic ((SV *)cv, 0, PERL_MAGIC_coro, 0, 0);	293	sv_magic ((SV *)cv, 0, PERL_MAGIC_coro, 0, 0);
256	mg = mg_find ((SV *)cv, PERL_MAGIC_coro);	294	mg = mg_find ((SV *)cv, PERL_MAGIC_coro);
257	mg->mg_virtual = &vtbl_coro;	295	mg->mg_virtual = &vtbl_coro;
258	mg->mg_obj = (SV *)newAV ();	296	mg->mg_obj = (SV *)newAV ();
259	}	297	}
260		298
261	av_push ((AV )mg->mg_obj, (SV )CvPADLIST (cv));	299	av = (AV *)mg->mg_obj;
		300
		301	if (AvFILLp (av) >= AvMAX (av))
		302	av_extend (av, AvMAX (av) + 1);
		303
		304	AvARRAY (av)[++AvFILLp (av)] = (SV *)CvPADLIST (cv);
262	}	305	}
263		306
264	#define SB do {	307	#define SB do {
265	#define SE } while (0)	308	#define SE } while (0)
266		309
267	#define LOAD(state) load_state(aTHX_ (state));
268	#define SAVE(state,flags) save_state(aTHX_ (state),(flags));
269
270	#define REPLACE_SV(sv,val) SB SvREFCNT_dec(sv); (sv) = (val); (val) = 0; SE	310	#define REPLACE_SV(sv,val) SB SvREFCNT_dec (sv); (sv) = (val); (val) = 0; SE
271		311
272	static void	312	static void
273	load_state(pTHX_ Coro__State c)	313	load_perl (Coro__State c)
274	{	314	{
275	PL_dowarn = c->dowarn;	315	#define VAR(name,type) PL_ ## name = c->name;
276	PL_in_eval = c->in_eval;	316	# include "state.h"
277		317	#undef VAR
278	PL_curstackinfo = c->curstackinfo;
279	PL_curstack = c->curstack;
280	PL_mainstack = c->mainstack;
281	PL_stack_sp = c->stack_sp;
282	PL_op = c->op;
283	PL_curpad = c->curpad;
284	PL_comppad = c->comppad;
285	PL_compcv = c->compcv;
286	PL_stack_base = c->stack_base;
287	PL_stack_max = c->stack_max;
288	PL_tmps_stack = c->tmps_stack;
289	PL_tmps_floor = c->tmps_floor;
290	PL_tmps_ix = c->tmps_ix;
291	PL_tmps_max = c->tmps_max;
292	PL_markstack = c->markstack;
293	PL_markstack_ptr = c->markstack_ptr;
294	PL_markstack_max = c->markstack_max;
295	PL_scopestack = c->scopestack;
296	PL_scopestack_ix = c->scopestack_ix;
297	PL_scopestack_max = c->scopestack_max;
298	PL_savestack = c->savestack;
299	PL_savestack_ix = c->savestack_ix;
300	PL_savestack_max = c->savestack_max;
301	#if PERL_VERSION < 9
302	PL_retstack = c->retstack;
303	PL_retstack_ix = c->retstack_ix;
304	PL_retstack_max = c->retstack_max;
305	#endif
306	PL_curpm = c->curpm;
307	PL_curcop = c->curcop;
308	PL_top_env = c->top_env;
309		318
310	if (c->defav) REPLACE_SV (GvAV (PL_defgv), c->defav);	319	if (c->defav) REPLACE_SV (GvAV (PL_defgv), c->defav);
311	if (c->defsv) REPLACE_SV (DEFSV , c->defsv);	320	if (c->defsv) REPLACE_SV (DEFSV , c->defsv);
312	if (c->errsv) REPLACE_SV (ERRSV , c->errsv);	321	if (c->errsv) REPLACE_SV (ERRSV , c->errsv);
		322	if (c->irssv)
		323	{
		324	if (c->irssv == PL_rs \|\| sv_eq (PL_rs, c->irssv))
		325	SvREFCNT_dec (c->irssv);
		326	else
		327	{
		328	REPLACE_SV (PL_rs, c->irssv);
		329	if (!c->irssv_sv) c->irssv_sv = get_sv ("/", 0);
		330	sv_setsv (c->irssv_sv, PL_rs);
		331	}
		332	}
313		333
314	{	334	{
315	dSP;	335	dSP;
316	CV *cv;	336	CV *cv;
317		337
318	/* now do the ugly restore mess */	338	/* now do the ugly restore mess */
319	while ((cv = (CV *)POPs))	339	while ((cv = (CV *)POPs))
320	{	340	{
321	AV padlist = (AV )POPs;
322
323	if (padlist)
324	{
325	put_padlist (aTHX_ cv); /* mark this padlist as available */	341	put_padlist (cv); /* mark this padlist as available */
326	CvPADLIST(cv) = padlist;	342	CvDEPTH (cv) = PTR2IV (POPs);
327	}	343	CvPADLIST (cv) = (AV *)POPs;
328
329	++CvDEPTH(cv);
330	}	344	}
331		345
332	PUTBACK;	346	PUTBACK;
333	}	347	}
334	}	348	}
335		349
336	static void	350	static void
337	save_state(pTHX_ Coro__State c, int flags)	351	save_perl (Coro__State c)
338	{	352	{
339	{	353	{
340	dSP;	354	dSP;
341	I32 cxix = cxstack_ix;	355	I32 cxix = cxstack_ix;
342	PERL_CONTEXT *ccstk = cxstack;	356	PERL_CONTEXT *ccstk = cxstack;
…		…
345	/*	359	/*
346	* the worst thing you can imagine happens first - we have to save	360	* the worst thing you can imagine happens first - we have to save
347	* (and reinitialize) all cv's in the whole callchain :(	361	* (and reinitialize) all cv's in the whole callchain :(
348	*/	362	*/
349		363
		364	EXTEND (SP, 3 + 1);
350	PUSHs (Nullsv);	365	PUSHs (Nullsv);
351	/* this loop was inspired by pp_caller */	366	/* this loop was inspired by pp_caller */
352	for (;;)	367	for (;;)
353	{	368	{
354	while (cxix >= 0)	369	while (cxix >= 0)
355	{	370	{
356	PERL_CONTEXT *cx = &ccstk[cxix--];	371	PERL_CONTEXT *cx = &ccstk[cxix--];
357		372
358	if (CxTYPE(cx) == CXt_SUB)	373	if (CxTYPE (cx) == CXt_SUB)
359	{	374	{
360	CV *cv = cx->blk_sub.cv;	375	CV *cv = cx->blk_sub.cv;
		376
361	if (CvDEPTH(cv))	377	if (CvDEPTH (cv))
362	{	378	{
363	EXTEND (SP, CvDEPTH(cv)*2);	379	EXTEND (SP, 3);
364
365	while (--CvDEPTH(cv))
366	{
367	/* this tells the restore code to increment CvDEPTH */
368	PUSHs (Nullsv);
369	PUSHs ((SV *)cv);
370	}
371
372	PUSHs ((SV *)CvPADLIST(cv));	380	PUSHs ((SV *)CvPADLIST (cv));
		381	PUSHs (INT2PTR (SV *, CvDEPTH (cv)));
373	PUSHs ((SV *)cv);	382	PUSHs ((SV *)cv);
374		383
		384	CvDEPTH (cv) = 0;
375	get_padlist (aTHX_ cv);	385	get_padlist (cv);
376	}	386	}
377	}	387	}
378	#ifdef CXt_FORMAT
379	else if (CxTYPE(cx) == CXt_FORMAT)
380	{
381	/* I never used formats, so how should I know how these are implemented? */
382	/* my bold guess is as a simple, plain sub... */
383	croak ("CXt_FORMAT not yet handled. Don't switch coroutines from within formats");
384	}
385	#endif
386	}	388	}
387		389
388	if (top_si->si_type == PERLSI_MAIN)	390	if (top_si->si_type == PERLSI_MAIN)
389	break;	391	break;
390		392
…		…
394	}	396	}
395		397
396	PUTBACK;	398	PUTBACK;
397	}	399	}
398		400
399	c->defav = flags & TRANSFER_SAVE_DEFAV ? (AV *)SvREFCNT_inc (GvAV (PL_defgv)) : 0;	401	c->defav = c->save & CORO_SAVE_DEFAV ? (AV *)SvREFCNT_inc (GvAV (PL_defgv)) : 0;
400	c->defsv = flags & TRANSFER_SAVE_DEFSV ? SvREFCNT_inc (DEFSV) : 0;	402	c->defsv = c->save & CORO_SAVE_DEFSV ? SvREFCNT_inc (DEFSV) : 0;
401	c->errsv = flags & TRANSFER_SAVE_ERRSV ? SvREFCNT_inc (ERRSV) : 0;	403	c->errsv = c->save & CORO_SAVE_ERRSV ? SvREFCNT_inc (ERRSV) : 0;
		404	c->irssv = c->save & CORO_SAVE_IRSSV ? SvREFCNT_inc (PL_rs) : 0;
402		405
403	c->dowarn = PL_dowarn;	406	#define VAR(name,type)c->name = PL_ ## name;
404	c->in_eval = PL_in_eval;	407	# include "state.h"
405		408	#undef VAR
406	c->curstackinfo = PL_curstackinfo;
407	c->curstack = PL_curstack;
408	c->mainstack = PL_mainstack;
409	c->stack_sp = PL_stack_sp;
410	c->op = PL_op;
411	c->curpad = PL_curpad;
412	c->comppad = PL_comppad;
413	c->compcv = PL_compcv;
414	c->stack_base = PL_stack_base;
415	c->stack_max = PL_stack_max;
416	c->tmps_stack = PL_tmps_stack;
417	c->tmps_floor = PL_tmps_floor;
418	c->tmps_ix = PL_tmps_ix;
419	c->tmps_max = PL_tmps_max;
420	c->markstack = PL_markstack;
421	c->markstack_ptr = PL_markstack_ptr;
422	c->markstack_max = PL_markstack_max;
423	c->scopestack = PL_scopestack;
424	c->scopestack_ix = PL_scopestack_ix;
425	c->scopestack_max = PL_scopestack_max;
426	c->savestack = PL_savestack;
427	c->savestack_ix = PL_savestack_ix;
428	c->savestack_max = PL_savestack_max;
429	#if PERL_VERSION < 9
430	c->retstack = PL_retstack;
431	c->retstack_ix = PL_retstack_ix;
432	c->retstack_max = PL_retstack_max;
433	#endif
434	c->curpm = PL_curpm;
435	c->curcop = PL_curcop;
436	c->top_env = PL_top_env;
437	}	409	}
438		410
439	/*	411	/*
440	* allocate various perl stacks. This is an exact copy	412	* allocate various perl stacks. This is an exact copy
441	* of perl.c:init_stacks, except that it uses less memory	413	* of perl.c:init_stacks, except that it uses less memory
442	* on the (sometimes correct) assumption that coroutines do	414	* on the (sometimes correct) assumption that coroutines do
443	* not usually need a lot of stackspace.	415	* not usually need a lot of stackspace.
444	*/	416	*/
		417	#if PREFER_PERL_FUNCTIONS
		418	# define coro_init_stacks init_stacks
		419	#else
445	static void	420	static void
446	coro_init_stacks (pTHX)	421	coro_init_stacks ()
447	{	422	{
448	LOCK;
449
450	PL_curstackinfo = new_stackinfo(96, 1024/sizeof(PERL_CONTEXT) - 1);	423	PL_curstackinfo = new_stackinfo(128, 1024/sizeof(PERL_CONTEXT));
451	PL_curstackinfo->si_type = PERLSI_MAIN;	424	PL_curstackinfo->si_type = PERLSI_MAIN;
452	PL_curstack = PL_curstackinfo->si_stack;	425	PL_curstack = PL_curstackinfo->si_stack;
453	PL_mainstack = PL_curstack; /* remember in case we switch stacks */	426	PL_mainstack = PL_curstack; /* remember in case we switch stacks */
454		427
455	PL_stack_base = AvARRAY(PL_curstack);	428	PL_stack_base = AvARRAY(PL_curstack);
456	PL_stack_sp = PL_stack_base;	429	PL_stack_sp = PL_stack_base;
457	PL_stack_max = PL_stack_base + AvMAX(PL_curstack);	430	PL_stack_max = PL_stack_base + AvMAX(PL_curstack);
458		431
459	New(50,PL_tmps_stack,96,SV*);	432	New(50,PL_tmps_stack,128,SV*);
460	PL_tmps_floor = -1;	433	PL_tmps_floor = -1;
461	PL_tmps_ix = -1;	434	PL_tmps_ix = -1;
462	PL_tmps_max = 96;	435	PL_tmps_max = 128;
463		436
464	New(54,PL_markstack,16,I32);	437	New(54,PL_markstack,32,I32);
465	PL_markstack_ptr = PL_markstack;	438	PL_markstack_ptr = PL_markstack;
466	PL_markstack_max = PL_markstack + 16;	439	PL_markstack_max = PL_markstack + 32;
467		440
468	#ifdef SET_MARK_OFFSET	441	#ifdef SET_MARK_OFFSET
469	SET_MARK_OFFSET;	442	SET_MARK_OFFSET;
470	#endif	443	#endif
471		444
472	New(54,PL_scopestack,16,I32);	445	New(54,PL_scopestack,32,I32);
473	PL_scopestack_ix = 0;	446	PL_scopestack_ix = 0;
474	PL_scopestack_max = 16;	447	PL_scopestack_max = 32;
475		448
476	New(54,PL_savestack,96,ANY);	449	New(54,PL_savestack,64,ANY);
477	PL_savestack_ix = 0;	450	PL_savestack_ix = 0;
478	PL_savestack_max = 96;	451	PL_savestack_max = 64;
479		452
480	#if PERL_VERSION < 9	453	#if !PERL_VERSION_ATLEAST (5,9,0)
481	New(54,PL_retstack,8,OP*);	454	New(54,PL_retstack,16,OP*);
482	PL_retstack_ix = 0;	455	PL_retstack_ix = 0;
483	PL_retstack_max = 8;	456	PL_retstack_max = 16;
484	#endif	457	#endif
485
486	UNLOCK;
487	}	458	}
		459	#endif
488		460
489	/*	461	/*
490	* destroy the stacks, the callchain etc...	462	* destroy the stacks, the callchain etc...
491	*/	463	*/
492	static void	464	static void
493	destroy_stacks(pTHX)	465	coro_destroy_stacks ()
494	{	466	{
495	if (!IN_DESTRUCT)	467	if (!IN_DESTRUCT)
496	{	468	{
497	/* is this ugly, I ask? */	469	/* restore all saved variables and stuff */
498	LEAVE_SCOPE (0);	470	LEAVE_SCOPE (0);
		471	assert (PL_tmps_floor == -1);
499		472
500	/* sure it is, but more important: is it correct?? :/ */	473	/* free all temporaries */
501	FREETMPS;	474	FREETMPS;
		475	assert (PL_tmps_ix == -1);
502		476
503	/POPSTACK_TO (PL_mainstack);//D//use/	477	POPSTACK_TO (PL_mainstack);
504	}	478	}
505		479
506	while (PL_curstackinfo->si_next)	480	while (PL_curstackinfo->si_next)
507	PL_curstackinfo = PL_curstackinfo->si_next;	481	PL_curstackinfo = PL_curstackinfo->si_next;
508		482
509	while (PL_curstackinfo)	483	while (PL_curstackinfo)
510	{	484	{
511	PERL_SI *p = PL_curstackinfo->si_prev;	485	PERL_SI *p = PL_curstackinfo->si_prev;
512		486
513	{ /D//remove/
514	dSP;
515	SWITCHSTACK (PL_curstack, PL_curstackinfo->si_stack);
516	PUTBACK; /* possibly superfluous */
517	}
518
519	if (!IN_DESTRUCT)	487	if (!IN_DESTRUCT)
520	{
521	dounwind (-1);/D//remove/
522	SvREFCNT_dec (PL_curstackinfo->si_stack);	488	SvREFCNT_dec (PL_curstackinfo->si_stack);
523	}
524		489
525	Safefree (PL_curstackinfo->si_cxstack);	490	Safefree (PL_curstackinfo->si_cxstack);
526	Safefree (PL_curstackinfo);	491	Safefree (PL_curstackinfo);
527	PL_curstackinfo = p;	492	PL_curstackinfo = p;
528	}	493	}
529		494
530	Safefree (PL_tmps_stack);	495	Safefree (PL_tmps_stack);
531	Safefree (PL_markstack);	496	Safefree (PL_markstack);
532	Safefree (PL_scopestack);	497	Safefree (PL_scopestack);
533	Safefree (PL_savestack);	498	Safefree (PL_savestack);
534	#if PERL_VERSION < 9	499	#if !PERL_VERSION_ATLEAST (5,9,0)
535	Safefree (PL_retstack);	500	Safefree (PL_retstack);
536	#endif	501	#endif
537	}	502	}
538		503
539	static void	504	static void
540	allocate_stack (Coro__State ctx, int alloc)	505	setup_coro (struct coro *coro)
541	{
542	coro_stack *stack;
543
544	New (0, stack, 1, coro_stack);
545
546	stack->refcnt = 1;
547	stack->usecnt = 1;
548	stack->gencnt = ctx->gencnt = 0;
549
550	if (alloc)
551	{
552	#if HAVE_MMAP
553	stack->ssize = ((STACKSIZE * sizeof (long) + PAGESIZE - 1) / PAGESIZE + STACKGUARD) * PAGESIZE; /* mmap should do allocate-on-write for us */
554	stack->sptr = mmap (0, stack->ssize, PROT_EXEC\|PROT_READ\|PROT_WRITE, MAP_PRIVATE\|MAP_ANONYMOUS, 0, 0);
555	if (stack->sptr != (void *)-1)
556	{
557	# if STACKGUARD
558	mprotect (stack->sptr, STACKGUARD * PAGESIZE, PROT_NONE);
559	# endif
560	}
561	else
562	#endif
563	{
564	stack->ssize = - (STACKSIZE * (long)sizeof (long));
565	New (0, stack->sptr, STACKSIZE, long);
566	}
567	}
568	else
569	stack->sptr = 0;
570
571	ctx->stack = stack;
572	}
573
574	static void
575	deallocate_stack (Coro__State ctx)
576	{
577	coro_stack *stack = ctx->stack;
578
579	ctx->stack = 0;
580
581	if (stack)
582	{
583	if (!--stack->refcnt)
584	{
585	#ifdef HAVE_MMAP
586	if (stack->ssize > 0 && stack->sptr)
587	munmap (stack->sptr, stack->ssize);
588	else
589	#endif
590	Safefree (stack->sptr);
591
592	Safefree (stack);
593	}
594	else if (ctx->gencnt == stack->gencnt)
595	--stack->usecnt;
596	}
597	}
598
599	static void
600	setup_coro (void *arg)
601	{	506	{
602	/*	507	/*
603	* emulate part of the perl startup here.	508	* emulate part of the perl startup here.
604	*/	509	*/
605	dTHX;	510
		511	coro_init_stacks ();
		512
		513	PL_curcop = &PL_compiling;
		514	PL_in_eval = EVAL_NULL;
		515	PL_curpm = 0;
		516	PL_localizing = 0;
		517	PL_dirty = 0;
		518	PL_restartop = 0;
		519
		520	{
		521	dSP;
		522	LOGOP myop;
		523
		524	SvREFCNT_dec (GvAV (PL_defgv));
		525	GvAV (PL_defgv) = coro->args; coro->args = 0;
		526
		527	Zero (&myop, 1, LOGOP);
		528	myop.op_next = Nullop;
		529	myop.op_flags = OPf_WANT_VOID;
		530
		531	PUSHMARK (SP);
		532	XPUSHs ((SV *)get_cv ("Coro::State::_coro_init", FALSE));
		533	PUTBACK;
		534	PL_op = (OP *)&myop;
		535	PL_op = PL_ppaddr[OP_ENTERSUB](aTHX);
		536	SPAGAIN;
		537	}
		538
		539	ENTER; /* necessary e.g. for dounwind */
		540	}
		541
		542	static void
		543	free_coro_mortal ()
		544	{
		545	if (coro_mortal)
		546	{
		547	SvREFCNT_dec (coro_mortal);
		548	coro_mortal = 0;
		549	}
		550	}
		551
		552	/* inject a fake call to Coro::State::_cctx_init into the execution */
		553	static void NOINLINE
		554	prepare_cctx (coro_cctx *cctx)
		555	{
606	dSP;	556	dSP;
607	Coro__State ctx = (Coro__State)arg;	557	LOGOP myop;
608	SV sub_init = (SV )get_cv (SUB_INIT, FALSE);
609		558
610	coro_init_stacks (aTHX);	559	Zero (&myop, 1, LOGOP);
611	/PL_curcop = 0;/	560	myop.op_next = PL_op;
612	/PL_in_eval = PL_in_eval;/ /* inherit */	561	myop.op_flags = OPf_WANT_VOID \| OPf_STACKED;
613	SvREFCNT_dec (GvAV (PL_defgv));
614	GvAV (PL_defgv) = ctx->args; ctx->args = 0;
615		562
		563	PUSHMARK (SP);
		564	EXTEND (SP, 2);
		565	PUSHs (sv_2mortal (newSViv (PTR2IV (cctx))));
		566	PUSHs ((SV *)get_cv ("Coro::State::_cctx_init", FALSE));
		567	PUTBACK;
		568	PL_op = (OP *)&myop;
		569	PL_op = PL_ppaddr[OP_ENTERSUB](aTHX);
616	SPAGAIN;	570	SPAGAIN;
617
618	if (ctx->stack)
619	{
620	ctx->cursp = 0;
621
622	PUSHMARK(SP);
623	PUTBACK;
624	(void) call_sv (sub_init, G_VOID\|G_NOARGS\|G_EVAL);
625
626	if (SvTRUE (ERRSV))
627	croak (NULL);
628	else
629	croak ("FATAL: CCTXT coroutine returned!");
630	}
631	else
632	{
633	UNOP myop;
634
635	Zero(&myop, 1, UNOP);
636	myop.op_next = Nullop;
637	myop.op_flags = OPf_WANT_VOID;
638
639	PL_op = (OP *)&myop;
640
641	PUSHMARK(SP);
642	XPUSHs (sub_init);
643	/*
644	* the next line is slightly wrong, as PL_op->op_next
645	* is actually being executed so we skip the first op.
646	* that doesn't matter, though, since it is only
647	* pp_nextstate and we never return...
648	* ah yes, and I don't care anyways ;)
649	*/
650	PUTBACK;
651	PL_op = PL_ppaddr[OP_ENTERSUB](aTHX);
652	SPAGAIN;
653
654	ENTER; /* necessary e.g. for dounwind */
655	}
656	}	571	}
657		572
658	static void	573	static void
659	continue_coro (void *arg)	574	coro_run (void *arg)
660	{	575	{
		576	/* coro_run is the alternative tail of transfer(), so unlock here. */
		577	UNLOCK;
		578
661	/*	579	/*
662	* this is a _very_ stripped down perl interpreter ;)	580	* this is a _very_ stripped down perl interpreter ;)
663	*/	581	*/
664	dTHX;
665	Coro__State ctx = (Coro__State)arg;
666
667	PL_top_env = &PL_start_env;	582	PL_top_env = &PL_start_env;
668		583
669	ctx->cursp = 0;	584	/* inject call to cctx_init */
670	PL_op = PL_op->op_next;	585	prepare_cctx ((coro_cctx *)arg);
671	CALLRUNOPS(aTHX);
672		586
		587	/* somebody will hit me for both perl_run and PL_restartop */
		588	PL_restartop = PL_op;
		589	perl_run (PL_curinterp);
		590
		591	fputs ("FATAL: C coroutine fell over the edge of the world, aborting. Did you call exit in a coroutine?\n", stderr);
673	abort ();	592	abort ();
674	}	593	}
675		594
		595	static coro_cctx *
		596	cctx_new ()
		597	{
		598	coro_cctx *cctx;
		599
		600	++cctx_count;
		601
		602	Newz (0, cctx, 1, coro_cctx);
		603
		604	#if HAVE_MMAP
		605
		606	cctx->ssize = ((STACKSIZE * sizeof (long) + PAGESIZE - 1) / PAGESIZE + STACKGUARD) * PAGESIZE;
		607	/* mmap supposedly does allocate-on-write for us */
		608	cctx->sptr = mmap (0, cctx->ssize, PROT_EXEC\|PROT_READ\|PROT_WRITE, MAP_PRIVATE\|MAP_ANONYMOUS, 0, 0);
		609
		610	if (cctx->sptr == (void *)-1)
		611	{
		612	perror ("FATAL: unable to mmap stack for coroutine");
		613	_exit (EXIT_FAILURE);
		614	}
		615
		616	# if STACKGUARD
		617	mprotect (cctx->sptr, STACKGUARD * PAGESIZE, PROT_NONE);
		618	# endif
		619
		620	#else
		621
		622	cctx->ssize = STACKSIZE * (long)sizeof (long);
		623	New (0, cctx->sptr, STACKSIZE, long);
		624
		625	if (!cctx->sptr)
		626	{
		627	perror ("FATAL: unable to malloc stack for coroutine");
		628	_exit (EXIT_FAILURE);
		629	}
		630
		631	#endif
		632
		633	#if USE_VALGRIND
		634	cctx->valgrind_id = VALGRIND_STACK_REGISTER (
		635	STACKGUARD * PAGESIZE + (char *)cctx->sptr,
		636	cctx->ssize + (char *)cctx->sptr
		637	);
		638	#endif
		639
		640	coro_create (&cctx->cctx, coro_run, (void *)cctx, cctx->sptr, cctx->ssize);
		641
		642	return cctx;
		643	}
		644
		645	static void
		646	cctx_destroy (coro_cctx *cctx)
		647	{
		648	if (!cctx)
		649	return;
		650
		651	--cctx_count;
		652
		653	#if USE_VALGRIND
		654	VALGRIND_STACK_DEREGISTER (cctx->valgrind_id);
		655	#endif
		656
		657	#if HAVE_MMAP
		658	munmap (cctx->sptr, cctx->ssize);
		659	#else
		660	Safefree (cctx->sptr);
		661	#endif
		662
		663	Safefree (cctx);
		664	}
		665
		666	static coro_cctx *
		667	cctx_get ()
		668	{
		669	coro_cctx *cctx;
		670
		671	if (cctx_first)
		672	{
		673	cctx = cctx_first;
		674	cctx_first = cctx->next;
		675	--cctx_idle;
		676	}
		677	else
		678	{
		679	cctx = cctx_new ();
		680	PL_op = PL_op->op_next;
		681	}
		682
		683	return cctx;
		684	}
		685
		686	static void
		687	cctx_put (coro_cctx *cctx)
		688	{
		689	/* free another cctx if overlimit */
		690	if (cctx_idle >= MAX_IDLE_CCTX)
		691	{
		692	coro_cctx *first = cctx_first;
		693	cctx_first = first->next;
		694	--cctx_idle;
		695
		696	assert (!first->inuse);
		697	cctx_destroy (first);
		698	}
		699
		700	++cctx_idle;
		701	cctx->next = cctx_first;
		702	cctx_first = cctx;
		703	}
		704
676	/* never call directly, always through the coro_state_transfer global variable */	705	/* never call directly, always through the coro_state_transfer global variable */
677	static void	706	static void NOINLINE
678	transfer_impl (pTHX_ struct coro prev, struct coro next, int flags)	707	transfer (struct coro prev, struct coro next)
679	{	708	{
680	dSTACKLEVEL;	709	dSTACKLEVEL;
681		710
		711	/* sometimes transfer is only called to set idle_sp */
		712	if (!next)
		713	{
		714	((coro_cctx *)prev)->idle_sp = STACKLEVEL;
		715	assert (((coro_cctx )prev)->idle_te = PL_top_env); / just for the side-effect when asserts are enabled */
		716	}
682	if (prev != next)	717	else if (prev != next)
683	{	718	{
684	/* has this coro been created yet? */	719	coro_cctx *prev__cctx;
685	if (next->mainstack)	720
		721	if (prev->flags & CF_NEW)
686	{	722	{
687	LOCK;	723	/* create a new empty context */
688	SAVE (prev, flags);	724	Newz (0, prev->cctx, 1, coro_cctx);
689	LOAD (next);	725	prev->cctx->inuse = 1;
690	UNLOCK;	726	prev->flags &= ~CF_NEW;
691		727	prev->flags \|= CF_RUNNING;
692	/* mark this state as in-use */
693	next->mainstack = 0;
694	next->tmps_ix = -2;
695
696	/* stacklevel changed? if yes, grab the stack for us! */
697	if (flags & TRANSFER_SAVE_CCTXT)
698	{
699	if (!prev->stack)
700	allocate_stack (prev, 0);
701	else if (prev->cursp != stacklevel
702	&& prev->stack->usecnt > 1)
703	{
704	prev->gencnt = ++prev->stack->gencnt;
705	prev->stack->usecnt = 1;
706	}
707
708	/* has our stack been invalidated? */
709	if (next->stack && next->stack->gencnt != next->gencnt)
710	{
711	deallocate_stack (next);
712	allocate_stack (next, 1);
713	coro_create (&(next->stack->cctx),
714	continue_coro, (void *)next,
715	next->stack->sptr, labs (next->stack->ssize));
716	}
717
718	coro_transfer (&(prev->stack->cctx), &(next->stack->cctx));
719	prev->cursp = stacklevel;
720	/* don't add any code here */
721	}
722	else
723	next->cursp = stacklevel;
724	}	728	}
725	else if (next->tmps_ix == -2)	729
726	croak ("tried to transfer to running coroutine");	730	/TODO: must not croak here /
		731	if (!prev->flags & CF_RUNNING)
		732	croak ("Coro::State::transfer called with non-running prev Coro::State, but can only transfer from running states");
		733
		734	if (next->flags & CF_RUNNING)
		735	croak ("Coro::State::transfer called with running next Coro::State, but can only transfer to inactive states");
		736
		737	if (next->flags & CF_DESTROYED)
		738	croak ("Coro::State::transfer called with destroyed next Coro::State, but can only transfer to inactive states");
		739
		740	prev->flags &= ~CF_RUNNING;
		741	next->flags \|= CF_RUNNING;
		742
		743	LOCK;
		744
		745	if (next->flags & CF_NEW)
		746	{
		747	/* need to start coroutine */
		748	next->flags &= ~CF_NEW;
		749	/* first get rid of the old state */
		750	save_perl (prev);
		751	/* setup coroutine call */
		752	setup_coro (next);
		753	/* need a new stack */
		754	assert (!next->cctx);
		755	}
727	else	756	else
728	{	757	{
729	LOCK;	758	/* coroutine already started */
730	SAVE (prev, -1); /* first get rid of the old state */	759	save_perl (prev);
731	UNLOCK;	760	load_perl (next);
732
733	/* create the coroutine for the first time */
734	if (flags & TRANSFER_SAVE_CCTXT)
735	{
736	if (!prev->stack)
737	allocate_stack (prev, 0);
738
739	/* the new coroutine starts with start_env again */
740	PL_top_env = &PL_start_env;
741
742	if (prev->stack->sptr && flags & TRANSFER_LAZY_STACK)
743	{
744	setup_coro (next);
745	next->cursp = stacklevel;
746
747	prev->stack->refcnt++;
748	prev->stack->usecnt++;
749	next->stack = prev->stack;
750	next->gencnt = prev->gencnt;
751	}
752	else
753	{
754	assert (!next->stack);
755	allocate_stack (next, 1);
756	coro_create (&(next->stack->cctx),
757	setup_coro, (void *)next,
758	next->stack->sptr, labs (next->stack->ssize));
759	coro_transfer (&(prev->stack->cctx), &(next->stack->cctx));
760	prev->cursp = stacklevel;
761	/* don't add any code here */
762	}
763	}
764	else
765	{
766	setup_coro (next);
767	next->cursp = stacklevel;
768	}
769	}	761	}
770	}
771		762
772	LOCK;	763	prev__cctx = prev->cctx;
773	if (coro_mortal)	764
774	{	765	/* possibly "free" the cctx */
775	SvREFCNT_dec (coro_mortal);	766	if (prev__cctx->idle_sp == STACKLEVEL)
		767	{
		768	/* I assume that STACKLEVEL is a stronger indicator than PL_top_env changes */
		769	assert (("ERROR: current top_env must equal previous top_env", PL_top_env == prev__cctx->idle_te));
		770
		771	prev->cctx = 0;
		772
		773	cctx_put (prev__cctx);
		774	prev__cctx->inuse = 0;
		775	}
		776
		777	if (!next->cctx)
		778	{
		779	next->cctx = cctx_get ();
		780	assert (!next->cctx->inuse);
		781	next->cctx->inuse = 1;
		782	}
		783
		784	if (prev__cctx != next->cctx)
		785	{
		786	prev__cctx->top_env = PL_top_env;
		787	PL_top_env = next->cctx->top_env;
		788	coro_transfer (&prev__cctx->cctx, &next->cctx->cctx);
		789	}
		790
776	coro_mortal = 0;	791	free_coro_mortal ();
777	}
778	UNLOCK;	792	UNLOCK;
		793	}
779	}	794	}
780		795
781	/* use this function pointer to call the above function */	796	struct transfer_args
782	/* this is done to increase chances of the compiler not inlining the call */	797	{
783	void (coro_state_transfer)(pTHX_ struct coro prev, struct coro *next, int flags) = transfer_impl;	798	struct coro prev, next;
		799	};
784		800
785	#define SV_CORO(sv,func) \	801	#define TRANSFER(ta) transfer ((ta).prev, (ta).next)
786	do { \
787	if (SvROK (sv)) \
788	sv = SvRV (sv); \
789	\
790	if (SvTYPE (sv) == SVt_PVHV && SvSTASH (sv) != coro_state_stash) \
791	{ \
792	HE he = hv_fetch_ent ((HV )sv, ucoro_state_sv, 0, ucoro_state_hash); \
793	\
794	if (!he) \
795	croak ("%s() -- %s is a hashref but lacks the " UCORO_STATE " key", func, # sv); \
796	\
797	(sv) = SvRV (HeVAL(he)); \
798	} \
799	\
800	/* must also be changed inside Coro::Cont::yield */ \
801	if (!SvOBJECT (sv) \|\| SvSTASH (sv) != coro_state_stash) \
802	croak ("%s() -- %s is not (and contains not) a Coro::State object", func, # sv); \
803	\
804	} while(0)
805		802
806	static void	803	static int
807	coro_state_destroy (struct coro *coro)	804	coro_state_destroy (struct coro *coro)
808	{	805	{
809	if (coro->refcnt--)	806	if (coro->refcnt--)
810	return;	807	return 0;
		808
		809	if (coro->flags & CF_DESTROYED)
		810	return 0;
		811
		812	coro->flags \|= CF_DESTROYED;
811		813
812	if (coro->mainstack && coro->mainstack != main_mainstack)	814	if (coro->mainstack && coro->mainstack != main_mainstack)
813	{	815	{
		816	assert (!(coro->flags & CF_RUNNING));
		817
814	struct coro temp;	818	struct coro temp;
		819	Zero (&temp, 1, struct coro);
		820	temp.save = CORO_SAVE_ALL;
815		821
816	SAVE (aTHX_ (&temp), TRANSFER_SAVE_ALL);	822	if (coro->flags & CF_RUNNING)
817	LOAD (aTHX_ coro);	823	croak ("FATAL: tried to destroy currently running coroutine");
818		824
		825	save_perl (&temp);
		826	load_perl (coro);
		827
819	destroy_stacks (aTHX);	828	coro_destroy_stacks ();
820		829
821	LOAD ((&temp)); /* this will get rid of defsv etc.. */	830	load_perl (&temp); /* this will get rid of defsv etc.. */
822		831
823	coro->mainstack = 0;	832	coro->mainstack = 0;
824	}	833	}
825		834
826	deallocate_stack (coro);	835	cctx_destroy (coro->cctx);
827	SvREFCNT_dec (coro->args);	836	SvREFCNT_dec (coro->args);
828	Safefree (coro);	837
		838	return 1;
829	}	839	}
830		840
831	static int	841	static int
832	coro_state_clear (SV sv, MAGIC mg)	842	coro_state_clear (pTHX_ SV sv, MAGIC mg)
833	{	843	{
834	struct coro coro = (struct coro )mg->mg_ptr;	844	struct coro coro = (struct coro )mg->mg_ptr;
835	mg->mg_ptr = 0;	845	mg->mg_ptr = 0;
836		846
837	coro_state_destroy (coro);	847	coro_state_destroy (coro);
838		848
		849	if (!coro->refcnt)
		850	Safefree (coro);
		851
839	return 0;	852	return 0;
840	}	853	}
841		854
842	static int	855	static int
843	coro_state_dup (MAGIC mg, CLONE_PARAMS params)	856	coro_state_dup (pTHX_ MAGIC mg, CLONE_PARAMS params)
844	{	857	{
845	struct coro coro = (struct coro )mg->mg_ptr;	858	struct coro coro = (struct coro )mg->mg_ptr;
846		859
847	++coro->refcnt;	860	++coro->refcnt;
848		861
849	return 0;	862	return 0;
850	}	863	}
851		864
852	static MGVTBL coro_state_vtbl = { 0, 0, 0, 0, coro_state_clear, 0, coro_state_dup, 0 };	865	static MGVTBL coro_state_vtbl = {
		866	0, 0, 0, 0,
		867	coro_state_clear,
		868	0,
		869	#ifdef MGf_DUP
		870	coro_state_dup,
		871	#else
		872	# define MGf_DUP 0
		873	#endif
		874	};
853		875
854	static struct coro *	876	static struct coro *
855	SvSTATE (SV *coro)	877	SvSTATE (SV *coro)
856	{	878	{
857	MAGIC *mg = SvMAGIC (SvROK (coro) ? SvRV (coro) : coro);	879	HV *stash;
		880	MAGIC *mg;
		881
		882	if (SvROK (coro))
		883	coro = SvRV (coro);
		884
		885	stash = SvSTASH (coro);
		886	if (stash != coro_stash && stash != coro_state_stash)
		887	{
		888	/* very slow, but rare, check */
		889	if (!sv_derived_from (sv_2mortal (newRV_inc (coro)), "Coro::State"))
		890	croak ("Coro::State object required");
		891	}
		892
		893	mg = SvMAGIC (coro);
858	assert (mg->mg_type == PERL_MAGIC_ext);	894	assert (mg->mg_type == PERL_MAGIC_ext);
859	return (struct coro *)mg->mg_ptr;	895	return (struct coro *)mg->mg_ptr;
860	}	896	}
861		897
862	static void	898	static void
		899	prepare_transfer (struct transfer_args ta, SV prev_sv, SV *next_sv)
		900	{
		901	ta->prev = SvSTATE (prev_sv);
		902	ta->next = SvSTATE (next_sv);
		903	}
		904
		905	static void
863	api_transfer (pTHX_ SV prev, SV next, int flags)	906	api_transfer (SV prev_sv, SV next_sv)
864	{	907	{
865	SV_CORO (prev, "Coro::transfer");	908	struct transfer_args ta;
866	SV_CORO (next, "Coro::transfer");
867		909
868	coro_state_transfer (aTHX_ SvSTATE (prev), SvSTATE (next), flags);	910	prepare_transfer (&ta, prev_sv, next_sv);
		911	TRANSFER (ta);
		912	}
		913
		914	static int
		915	api_save (SV *coro_sv, int new_save)
		916	{
		917	struct coro *coro = SvSTATE (coro_sv);
		918	int old_save = coro->save;
		919
		920	if (new_save >= 0)
		921	coro->save = new_save;
		922
		923	return old_save;
869	}	924	}
870		925
871	/ Coro ******************************************************************/	926	/ Coro ******************************************************************/
872		927
873	#define PRIO_MAX 3	928	#define PRIO_MAX 3
…		…
876	#define PRIO_LOW -1	931	#define PRIO_LOW -1
877	#define PRIO_IDLE -3	932	#define PRIO_IDLE -3
878	#define PRIO_MIN -4	933	#define PRIO_MIN -4
879		934
880	/* for Coro.pm */	935	/* for Coro.pm */
881	static GV coro_current, coro_idle;	936	static SV *coro_current;
882	static AV *coro_ready [PRIO_MAX-PRIO_MIN+1];	937	static AV *coro_ready [PRIO_MAX-PRIO_MIN+1];
883	static int coro_nready;	938	static int coro_nready;
884		939
885	static void	940	static void
886	coro_enq (pTHX_ SV *sv)	941	coro_enq (SV *coro_sv)
887	{	942	{
888	int prio;
889
890	if (SvTYPE (sv) != SVt_PVHV)
891	croak ("Coro::ready tried to enqueue something that is not a coroutine");
892
893	{
894	SV *coro = sv;
895	SV_CORO (coro, "omg");
896	prio = SvSTATE (coro)->prio;
897	}
898
899	av_push (coro_ready [prio - PRIO_MIN], sv);	943	av_push (coro_ready [SvSTATE (coro_sv)->prio - PRIO_MIN], coro_sv);
900	coro_nready++;	944	coro_nready++;
901	}	945	}
902		946
903	static SV *	947	static SV *
904	coro_deq (pTHX_ int min_prio)	948	coro_deq (int min_prio)
905	{	949	{
906	int prio = PRIO_MAX - PRIO_MIN;	950	int prio = PRIO_MAX - PRIO_MIN;
907		951
908	min_prio -= PRIO_MIN;	952	min_prio -= PRIO_MIN;
909	if (min_prio < 0)	953	if (min_prio < 0)
…		…
917	}	961	}
918		962
919	return 0;	963	return 0;
920	}	964	}
921		965
922	static void	966	static int
923	api_ready (SV *coro)	967	api_ready (SV *coro_sv)
924	{	968	{
925	dTHX;	969	struct coro *coro;
926		970
927	if (SvROK (coro))	971	if (SvROK (coro_sv))
928	coro = SvRV (coro);	972	coro_sv = SvRV (coro_sv);
		973
		974	coro = SvSTATE (coro_sv);
		975
		976	if (coro->flags & CF_READY)
		977	return 0;
		978
		979	coro->flags \|= CF_READY;
929		980
930	LOCK;	981	LOCK;
931	coro_enq (aTHX_ SvREFCNT_inc (coro));	982	coro_enq (SvREFCNT_inc (coro_sv));
932	UNLOCK;	983	UNLOCK;
		984
		985	return 1;
		986	}
		987
		988	static int
		989	api_is_ready (SV *coro_sv)
		990	{
		991	return !!(SvSTATE (coro_sv)->flags & CF_READY);
		992	}
		993
		994	static void
		995	prepare_schedule (struct transfer_args *ta)
		996	{
		997	SV prev_sv, next_sv;
		998
		999	for (;;)
		1000	{
		1001	LOCK;
		1002	next_sv = coro_deq (PRIO_MIN);
		1003	UNLOCK;
		1004
		1005	/* nothing to schedule: call the idle handler */
		1006	if (!next_sv)
		1007	{
		1008	dSP;
		1009
		1010	ENTER;
		1011	SAVETMPS;
		1012
		1013	PUSHMARK (SP);
		1014	PUTBACK;
		1015	call_sv (get_sv ("Coro::idle", FALSE), G_DISCARD);
		1016
		1017	FREETMPS;
		1018	LEAVE;
		1019	continue;
		1020	}
		1021
		1022	ta->next = SvSTATE (next_sv);
		1023
		1024	/* cannot transfer to destroyed coros, skip and look for next */
		1025	if (ta->next->flags & CF_DESTROYED)
		1026	{
		1027	SvREFCNT_dec (next_sv);
		1028	continue;
		1029	}
		1030
		1031	break;
		1032	}
		1033
		1034	/* free this only after the transfer */
		1035	prev_sv = SvRV (coro_current);
		1036	SvRV_set (coro_current, next_sv);
		1037	ta->prev = SvSTATE (prev_sv);
		1038
		1039	assert (ta->next->flags & CF_READY);
		1040	ta->next->flags &= ~CF_READY;
		1041
		1042	LOCK;
		1043	free_coro_mortal ();
		1044	coro_mortal = prev_sv;
		1045	UNLOCK;
		1046	}
		1047
		1048	static void
		1049	prepare_cede (struct transfer_args *ta)
		1050	{
		1051	api_ready (coro_current);
		1052	prepare_schedule (ta);
		1053	}
		1054
		1055	static int
		1056	prepare_cede_notself (struct transfer_args *ta)
		1057	{
		1058	if (coro_nready)
		1059	{
		1060	SV *prev = SvRV (coro_current);
		1061	prepare_schedule (ta);
		1062	api_ready (prev);
		1063	return 1;
		1064	}
		1065	else
		1066	return 0;
933	}	1067	}
934		1068
935	static void	1069	static void
936	api_schedule (void)	1070	api_schedule (void)
937	{	1071	{
938	dTHX;	1072	struct transfer_args ta;
939		1073
940	SV prev, next;	1074	prepare_schedule (&ta);
941		1075	TRANSFER (ta);
942	LOCK;
943
944	prev = SvRV (GvSV (coro_current));
945	next = coro_deq (aTHX_ PRIO_MIN);
946
947	if (!next)
948	next = SvREFCNT_inc (SvRV (GvSV (coro_idle)));
949
950	/* free this only after the transfer */
951	coro_mortal = prev;
952	SV_CORO (prev, "Coro::schedule");
953
954	SvRV (GvSV (coro_current)) = next;
955
956	SV_CORO (next, "Coro::schedule");
957
958	UNLOCK;
959
960	coro_state_transfer (aTHX_ SvSTATE (prev), SvSTATE (next),
961	TRANSFER_SAVE_ALL \| TRANSFER_LAZY_STACK);
962	}	1076	}
963		1077
964	static void	1078	static int
965	api_cede (void)	1079	api_cede (void)
966	{	1080	{
967	dTHX;	1081	struct transfer_args ta;
968		1082
969	LOCK;	1083	prepare_cede (&ta);
970	coro_enq (aTHX_ SvREFCNT_inc (SvRV (GvSV (coro_current))));
971	UNLOCK;
972		1084
973	api_schedule ();	1085	if (ta.prev != ta.next)
		1086	{
		1087	TRANSFER (ta);
		1088	return 1;
		1089	}
		1090	else
		1091	return 0;
		1092	}
		1093
		1094	static int
		1095	api_cede_notself (void)
		1096	{
		1097	struct transfer_args ta;
		1098
		1099	if (prepare_cede_notself (&ta))
		1100	{
		1101	TRANSFER (ta);
		1102	return 1;
		1103	}
		1104	else
		1105	return 0;
974	}	1106	}
975		1107
976	MODULE = Coro::State PACKAGE = Coro::State	1108	MODULE = Coro::State PACKAGE = Coro::State
977		1109
978	PROTOTYPES: DISABLE	1110	PROTOTYPES: DISABLE
979		1111
980	BOOT:	1112	BOOT:
981	{ /* {} necessary for stoopid perl-5.6.x */	1113	{
982	#ifdef USE_ITHREADS	1114	#ifdef USE_ITHREADS
983	MUTEX_INIT (&coro_mutex);	1115	MUTEX_INIT (&coro_mutex);
984	#endif	1116	#endif
985	BOOT_PAGESIZE;	1117	BOOT_PAGESIZE;
986		1118
987	ucoro_state_sv = newSVpv (UCORO_STATE, sizeof(UCORO_STATE) - 1);
988	PERL_HASH(ucoro_state_hash, UCORO_STATE, sizeof(UCORO_STATE) - 1);
989	coro_state_stash = gv_stashpv ("Coro::State", TRUE);	1119	coro_state_stash = gv_stashpv ("Coro::State", TRUE);
990		1120
991	newCONSTSUB (coro_state_stash, "SAVE_DEFAV", newSViv (TRANSFER_SAVE_DEFAV));	1121	newCONSTSUB (coro_state_stash, "SAVE_DEFAV", newSViv (CORO_SAVE_DEFAV));
992	newCONSTSUB (coro_state_stash, "SAVE_DEFSV", newSViv (TRANSFER_SAVE_DEFSV));	1122	newCONSTSUB (coro_state_stash, "SAVE_DEFSV", newSViv (CORO_SAVE_DEFSV));
993	newCONSTSUB (coro_state_stash, "SAVE_ERRSV", newSViv (TRANSFER_SAVE_ERRSV));	1123	newCONSTSUB (coro_state_stash, "SAVE_ERRSV", newSViv (CORO_SAVE_ERRSV));
		1124	newCONSTSUB (coro_state_stash, "SAVE_IRSSV", newSViv (CORO_SAVE_IRSSV));
994	newCONSTSUB (coro_state_stash, "SAVE_CCTXT", newSViv (TRANSFER_SAVE_CCTXT));	1125	newCONSTSUB (coro_state_stash, "SAVE_ALL", newSViv (CORO_SAVE_ALL));
995		1126
996	main_mainstack = PL_mainstack;	1127	main_mainstack = PL_mainstack;
997		1128
998	coroapi.ver = CORO_API_VERSION;	1129	coroapi.ver = CORO_API_VERSION;
999	coroapi.transfer = api_transfer;	1130	coroapi.transfer = api_transfer;
…		…
1009	HV *hv;	1140	HV *hv;
1010	int i;	1141	int i;
1011		1142
1012	Newz (0, coro, 1, struct coro);	1143	Newz (0, coro, 1, struct coro);
1013	coro->args = newAV ();	1144	coro->args = newAV ();
1014		1145	coro->save = CORO_SAVE_ALL;
1015	for (i = 1; i < items; i++)	1146	coro->flags = CF_NEW;
1016	av_push (coro->args, newSVsv (ST (i)));
1017
1018	/coro->mainstack = 0; //actual work is done inside transfer /
1019	/coro->stack = 0;/
1020		1147
1021	hv = newHV ();	1148	hv = newHV ();
1022	sv_magicext ((SV )hv, 0, PERL_MAGIC_ext, &coro_state_vtbl, (char )coro, 0)->mg_flags \|= MGf_DUP;	1149	sv_magicext ((SV )hv, 0, PERL_MAGIC_ext, &coro_state_vtbl, (char )coro, 0)->mg_flags \|= MGf_DUP;
1023	RETVAL = sv_bless (newRV_noinc ((SV *)hv), gv_stashpv (klass, 1));	1150	RETVAL = sv_bless (newRV_noinc ((SV *)hv), gv_stashpv (klass, 1));
		1151
		1152	for (i = 1; i < items; i++)
		1153	av_push (coro->args, newSVsv (ST (i)));
1024	}	1154	}
1025	OUTPUT:	1155	OUTPUT:
1026	RETVAL	1156	RETVAL
1027		1157
		1158	int
		1159	save (SV *coro, int new_save = -1)
		1160	CODE:
		1161	RETVAL = api_save (coro, new_save);
		1162	OUTPUT:
		1163	RETVAL
		1164
1028	void	1165	void
1029	transfer(prev, next, flags)	1166	_set_stacklevel (...)
1030	SV *prev	1167	ALIAS:
1031	SV *next	1168	Coro::State::transfer = 1
1032	int flags	1169	Coro::schedule = 2
		1170	Coro::cede = 3
		1171	Coro::cede_notself = 4
1033	CODE:	1172	CODE:
1034	PUTBACK;
1035	SV_CORO (next, "Coro::transfer");
1036	SV_CORO (prev, "Coro::transfer");
1037	coro_state_transfer (aTHX_ SvSTATE (prev), SvSTATE (next), flags);
1038	SPAGAIN;
1039
1040	int
1041	prio (Coro::State coro, int newprio = 0)
1042	ALIAS:
1043	nice = 1
1044	CODE:
1045	{	1173	{
1046	RETVAL = coro->prio;	1174	struct transfer_args ta;
1047		1175
1048	if (items > 1)	1176	switch (ix)
1049	{	1177	{
		1178	case 0:
		1179	ta.prev = (struct coro )INT2PTR (coro_cctx , SvIV (ST (0)));
		1180	ta.next = 0;
		1181	break;
		1182
		1183	case 1:
1050	if (ix)	1184	if (items != 2)
1051	newprio += coro->prio;	1185	croak ("Coro::State::transfer (prev,next) expects two arguments, not %d", items);
1052		1186
1053	if (newprio < PRIO_MIN) newprio = PRIO_MIN;	1187	prepare_transfer (&ta, ST (0), ST (1));
1054	if (newprio > PRIO_MAX) newprio = PRIO_MAX;	1188	break;
1055		1189
1056	coro->prio = newprio;	1190	case 2:
		1191	prepare_schedule (&ta);
		1192	break;
		1193
		1194	case 3:
		1195	prepare_cede (&ta);
		1196	break;
		1197
		1198	case 4:
		1199	if (!prepare_cede_notself (&ta))
		1200	XSRETURN_EMPTY;
		1201
		1202	break;
1057	}	1203	}
1058	}
1059		1204
1060	void	1205	BARRIER;
1061	_clone_state_from (SV dst, SV src)	1206	TRANSFER (ta);
		1207	}
		1208
		1209	bool
		1210	_destroy (SV *coro_sv)
1062	CODE:	1211	CODE:
1063	{	1212	RETVAL = coro_state_destroy (SvSTATE (coro_sv));
1064	struct coro *coro_src = SvSTATE (src);	1213	OUTPUT:
1065		1214	RETVAL
1066	sv_unmagic (SvRV (dst), PERL_MAGIC_ext);
1067
1068	++coro_src->refcnt;
1069	sv_magicext (SvRV (dst), 0, PERL_MAGIC_ext, &coro_state_vtbl, (char *)coro_src, 0)->mg_flags \|= MGf_DUP;
1070	}
1071		1215
1072	void	1216	void
1073	_exit (code)	1217	_exit (code)
1074	int code	1218	int code
1075	PROTOTYPE: $	1219	PROTOTYPE: $
1076	CODE:	1220	CODE:
1077	_exit (code);	1221	_exit (code);
1078		1222
1079	MODULE = Coro::State PACKAGE = Coro::Cont	1223	int
		1224	cctx_count ()
		1225	CODE:
		1226	RETVAL = cctx_count;
		1227	OUTPUT:
		1228	RETVAL
1080		1229
1081	void	1230	int
1082	yield (...)	1231	cctx_idle ()
1083	PROTOTYPE: @	1232	CODE:
1084	CODE:	1233	RETVAL = cctx_idle;
1085	SV *yieldstack;	1234	OUTPUT:
1086	SV *sv;	1235	RETVAL
1087	AV *defav = GvAV (PL_defgv);
1088	struct coro prev, next;
1089
1090	yieldstack = *hv_fetch (
1091	(HV *)SvRV (GvSV (coro_current)),
1092	"yieldstack", sizeof ("yieldstack") - 1,
1093	0
1094	);
1095
1096	/* set up @_ -- ugly */
1097	av_clear (defav);
1098	av_fill (defav, items - 1);
1099	while (items--)
1100	av_store (defav, items, SvREFCNT_inc (ST(items)));
1101
1102	sv = av_pop ((AV *)SvRV (yieldstack));
1103	prev = SvSTATE ((SV)SvRV (av_fetch ((AV *)SvRV (sv), 0, 0)));
1104	next = SvSTATE ((SV)SvRV (av_fetch ((AV *)SvRV (sv), 1, 0)));
1105	SvREFCNT_dec (sv);
1106
1107	coro_state_transfer (aTHX_ prev, next, 0);
1108		1236
1109	MODULE = Coro::State PACKAGE = Coro	1237	MODULE = Coro::State PACKAGE = Coro
1110		1238
1111	BOOT:	1239	BOOT:
1112	{	1240	{
1113	int i;	1241	int i;
		1242
1114	HV *stash = gv_stashpv ("Coro", TRUE);	1243	coro_stash = gv_stashpv ("Coro", TRUE);
1115		1244
1116	newCONSTSUB (stash, "PRIO_MAX", newSViv (PRIO_MAX));	1245	newCONSTSUB (coro_stash, "PRIO_MAX", newSViv (PRIO_MAX));
1117	newCONSTSUB (stash, "PRIO_HIGH", newSViv (PRIO_HIGH));	1246	newCONSTSUB (coro_stash, "PRIO_HIGH", newSViv (PRIO_HIGH));
1118	newCONSTSUB (stash, "PRIO_NORMAL", newSViv (PRIO_NORMAL));	1247	newCONSTSUB (coro_stash, "PRIO_NORMAL", newSViv (PRIO_NORMAL));
1119	newCONSTSUB (stash, "PRIO_LOW", newSViv (PRIO_LOW));	1248	newCONSTSUB (coro_stash, "PRIO_LOW", newSViv (PRIO_LOW));
1120	newCONSTSUB (stash, "PRIO_IDLE", newSViv (PRIO_IDLE));	1249	newCONSTSUB (coro_stash, "PRIO_IDLE", newSViv (PRIO_IDLE));
1121	newCONSTSUB (stash, "PRIO_MIN", newSViv (PRIO_MIN));	1250	newCONSTSUB (coro_stash, "PRIO_MIN", newSViv (PRIO_MIN));
1122		1251
1123	coro_current = gv_fetchpv ("Coro::current", TRUE, SVt_PV);	1252	coro_current = get_sv ("Coro::current", FALSE);
1124	coro_idle = gv_fetchpv ("Coro::idle" , TRUE, SVt_PV);	1253	SvREADONLY_on (coro_current);
1125		1254
1126	for (i = PRIO_MAX - PRIO_MIN + 1; i--; )	1255	for (i = PRIO_MAX - PRIO_MIN + 1; i--; )
1127	coro_ready[i] = newAV ();	1256	coro_ready[i] = newAV ();
1128		1257
1129	{	1258	{
1130	SV *sv = perl_get_sv("Coro::API", 1);	1259	SV *sv = perl_get_sv("Coro::API", 1);
1131		1260
1132	coroapi.schedule = api_schedule;	1261	coroapi.schedule = api_schedule;
		1262	coroapi.save = api_save;
1133	coroapi.cede = api_cede;	1263	coroapi.cede = api_cede;
		1264	coroapi.cede_notself = api_cede_notself;
1134	coroapi.ready = api_ready;	1265	coroapi.ready = api_ready;
		1266	coroapi.is_ready = api_is_ready;
1135	coroapi.nready = &coro_nready;	1267	coroapi.nready = &coro_nready;
1136	coroapi.current = coro_current;	1268	coroapi.current = coro_current;
1137		1269
1138	GCoroAPI = &coroapi;	1270	GCoroAPI = &coroapi;
1139	sv_setiv (sv, (IV)&coroapi);	1271	sv_setiv (sv, (IV)&coroapi);
1140	SvREADONLY_on (sv);	1272	SvREADONLY_on (sv);
1141	}	1273	}
1142	}	1274	}
1143		1275
1144	#if !PERL_MICRO
1145
1146	void	1276	void
1147	ready (self)	1277	_set_current (SV *current)
1148	SV * self
1149	PROTOTYPE: $	1278	PROTOTYPE: $
1150	CODE:	1279	CODE:
1151	api_ready (self);	1280	SvREFCNT_dec (SvRV (coro_current));
		1281	SvRV_set (coro_current, SvREFCNT_inc (SvRV (current)));
1152		1282
1153	#endif	1283	int
		1284	prio (Coro::State coro, int newprio = 0)
		1285	ALIAS:
		1286	nice = 1
		1287	CODE:
		1288	{
		1289	RETVAL = coro->prio;
		1290
		1291	if (items > 1)
		1292	{
		1293	if (ix)
		1294	newprio = coro->prio - newprio;
		1295
		1296	if (newprio < PRIO_MIN) newprio = PRIO_MIN;
		1297	if (newprio > PRIO_MAX) newprio = PRIO_MAX;
		1298
		1299	coro->prio = newprio;
		1300	}
		1301	}
		1302	OUTPUT:
		1303	RETVAL
		1304
		1305	SV *
		1306	ready (SV *self)
		1307	PROTOTYPE: $
		1308	CODE:
		1309	RETVAL = boolSV (api_ready (self));
		1310	OUTPUT:
		1311	RETVAL
		1312
		1313	SV *
		1314	is_ready (SV *self)
		1315	PROTOTYPE: $
		1316	CODE:
		1317	RETVAL = boolSV (api_is_ready (self));
		1318	OUTPUT:
		1319	RETVAL
1154		1320
1155	int	1321	int
1156	nready (...)	1322	nready (...)
1157	PROTOTYPE:	1323	PROTOTYPE:
1158	CODE:	1324	CODE:
1159	RETVAL = coro_nready;	1325	RETVAL = coro_nready;
1160	OUTPUT:	1326	OUTPUT:
1161	RETVAL	1327	RETVAL
1162		1328
1163	void	1329	MODULE = Coro::State PACKAGE = Coro::AIO
1164	schedule (...)	1330
1165	PROTOTYPE:	1331	SV *
		1332	_get_state ()
1166	CODE:	1333	CODE:
1167	api_schedule ();
1168
1169	void
1170	cede (...)
1171	PROTOTYPE:
1172	CODE:
1173	api_cede ();
1174
1175	# and these are hacks
1176	SV *
1177	_aio_get_state ()
1178	CODE:
1179	{	1334	{
1180	struct {	1335	struct io_state *data;
1181	int errorno;
1182	int laststype;
1183	int laststatval;
1184	Stat_t statcache;
1185	} data;
1186		1336
		1337	RETVAL = newSV (sizeof (struct io_state));
		1338	data = (struct io_state *)SvPVX (RETVAL);
		1339	SvCUR_set (RETVAL, sizeof (struct io_state));
		1340	SvPOK_only (RETVAL);
		1341
1187	data.errorno = errno;	1342	data->errorno = errno;
1188	data.laststype = PL_laststype;	1343	data->laststype = PL_laststype;
1189	data.laststatval = PL_laststatval;	1344	data->laststatval = PL_laststatval;
1190	data.statcache = PL_statcache;	1345	data->statcache = PL_statcache;
1191
1192	RETVAL = newSVpvn ((char *)&data, sizeof data);
1193	}	1346	}
1194	OUTPUT:	1347	OUTPUT:
1195	RETVAL	1348	RETVAL
1196		1349
1197	void	1350	void
1198	_aio_set_state (char *data_)	1351	_set_state (char *data_)
1199	PROTOTYPE: $	1352	PROTOTYPE: $
1200	CODE:	1353	CODE:
1201	{	1354	{
1202	struct {	1355	struct io_state data = (void )data_;
1203	int errorno;
1204	int laststype;
1205	int laststatval;
1206	Stat_t statcache;
1207	} data = (void )data_;
1208		1356
1209	errno = data->errorno;	1357	errno = data->errorno;
1210	PL_laststype = data->laststype;	1358	PL_laststype = data->laststype;
1211	PL_laststatval = data->laststatval;	1359	PL_laststatval = data->laststatval;
1212	PL_statcache = data->statcache;	1360	PL_statcache = data->statcache;
1213	}	1361	}
		1362

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Comparing Coro/Coro/State.xs (file contents): Revision 1.87 by root, Fri Nov 24 13:40:36 2006 UTC vs. Revision 1.133 by root, Thu Jan 4 20:14:19 2007 UTC

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Comparing Coro/Coro/State.xs (file contents):
Revision 1.87 by root, Fri Nov 24 13:40:36 2006 UTC vs.
Revision 1.133 by root, Thu Jan 4 20:14:19 2007 UTC