[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 1.136 by root, Fri Jan 12 01:05:55 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	/* helper storage struct for Coro::AIO */
		118	struct io_state
		119	{
		120	int errorno;
		121	I32 laststype;
		122	int laststatval;
		123	Stat_t statcache;
		124	};
		125
85	static struct CoroAPI coroapi;	126	static struct CoroAPI coroapi;
86	static AV main_mainstack; / used to differentiate between $main and others */	127	static AV main_mainstack; / used to differentiate between $main and others */
87	static HV *coro_state_stash;	128	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 */	129	static SV coro_mortal; / will be freed after next transfer */
91		130
92	/* this is actually not only the c stack but also c registers etc... */	131	static struct coro_cctx *cctx_first;
		132	static int cctx_count, cctx_idle;
		133
		134	/* this is a structure representing a c-level coroutine */
93	typedef struct {	135	typedef struct coro_cctx {
94	int refcnt; /* pointer reference counter */	136	struct coro_cctx *next;
95	int usecnt; /* shared by how many coroutines */
96	int gencnt; /* generation counter */
97		137
98	coro_context cctx;	138	/* the stack */
99
100	void *sptr;	139	void *sptr;
101	long ssize; /* positive == mmap, otherwise malloc */	140	long ssize; /* positive == mmap, otherwise malloc */
102	} coro_stack;
103		141
		142	/* cpu state */
		143	void idle_sp; / sp of top-level transfer/schedule/cede call */
		144	JMPENV idle_te; / same as idle_sp, but for top_env, TODO: remove once stable */
		145	JMPENV *top_env;
		146	coro_context cctx;
		147
		148	int inuse;
		149
		150	#if USE_VALGRIND
		151	int valgrind_id;
		152	#endif
		153	} coro_cctx;
		154
		155	enum {
		156	CF_RUNNING = 0x0001, /* coroutine is running */
		157	CF_READY = 0x0002, /* coroutine is ready */
		158	CF_NEW = 0x0004, /* has never been switched to */
		159	CF_DESTROYED = 0x0008, /* coroutine data has been freed */
		160	};
		161
		162	/* this is a structure representing a perl-level coroutine */
104	struct coro {	163	struct coro {
105	/* the optional C context */	164	/* the c coroutine allocated to this perl coroutine, if any */
106	coro_stack *stack;	165	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		166
153	/* data associated with this coroutine (initial args) */	167	/* data associated with this coroutine (initial args) */
154	AV *args;	168	AV *args;
155	int refcnt;	169	int refcnt;
		170	int save; /* CORO_SAVE flags */
		171	int flags; /* CF_ flags */
		172
		173	/* optionally saved, might be zero */
		174	AV defav; / @_ */
		175	SV defsv; / $_ */
		176	SV errsv; / $@ */
		177	SV irssv; / $/ */
		178	SV irssv_sv; / real $/ cache */
		179
		180	#define VAR(name,type) type name;
		181	# include "state.h"
		182	#undef VAR
		183
		184	/* coro process data */
		185	int prio;
156	};	186	};
157		187
158	typedef struct coro *Coro__State;	188	typedef struct coro *Coro__State;
159	typedef struct coro *Coro__State_or_hashref;	189	typedef struct coro *Coro__State_or_hashref;
160		190
161	static AV *	191	static AV *
162	coro_clone_padlist (pTHX_ CV *cv)	192	coro_clone_padlist (CV *cv)
163	{	193	{
164	AV *padlist = CvPADLIST (cv);	194	AV *padlist = CvPADLIST (cv);
165	AV newpadlist, newpad;	195	AV newpadlist, newpad;
166		196
167	newpadlist = newAV ();	197	newpadlist = newAV ();
168	AvREAL_off (newpadlist);	198	AvREAL_off (newpadlist);
169	#if PERL_VERSION < 9	199	#if PERL_VERSION_ATLEAST (5,9,0)
		200	Perl_pad_push (aTHX_ padlist, AvFILLp (padlist) + 1);
		201	#else
170	Perl_pad_push (aTHX_ padlist, AvFILLp (padlist) + 1, 1);	202	Perl_pad_push (aTHX_ padlist, AvFILLp (padlist) + 1, 1);
171	#else
172	Perl_pad_push (aTHX_ padlist, AvFILLp (padlist) + 1);
173	#endif	203	#endif
174	newpad = (AV *)AvARRAY (padlist)[AvFILLp (padlist)];	204	newpad = (AV *)AvARRAY (padlist)[AvFILLp (padlist)];
175	--AvFILLp (padlist);	205	--AvFILLp (padlist);
176		206
177	av_store (newpadlist, 0, SvREFCNT_inc (*av_fetch (padlist, 0, FALSE)));	207	av_store (newpadlist, 0, SvREFCNT_inc (*av_fetch (padlist, 0, FALSE)));
…		…
179		209
180	return newpadlist;	210	return newpadlist;
181	}	211	}
182		212
183	static void	213	static void
184	free_padlist (pTHX_ AV *padlist)	214	free_padlist (AV *padlist)
185	{	215	{
186	/* may be during global destruction */	216	/* may be during global destruction */
187	if (SvREFCNT (padlist))	217	if (SvREFCNT (padlist))
188	{	218	{
189	I32 i = AvFILLp (padlist);	219	I32 i = AvFILLp (padlist);
…		…
210	AV *padlist;	240	AV *padlist;
211	AV av = (AV )mg->mg_obj;	241	AV av = (AV )mg->mg_obj;
212		242
213	/* casting is fun. */	243	/* casting is fun. */
214	while (&PL_sv_undef != (SV )(padlist = (AV )av_pop (av)))	244	while (&PL_sv_undef != (SV )(padlist = (AV )av_pop (av)))
215	free_padlist (aTHX_ padlist);	245	free_padlist (padlist);
216		246
217	SvREFCNT_dec (av);	247	SvREFCNT_dec (av);
218		248
219	return 0;	249	return 0;
220	}	250	}
221		251
222	#define PERL_MAGIC_coro PERL_MAGIC_ext	252	#define PERL_MAGIC_coro PERL_MAGIC_ext
223		253
224	static MGVTBL vtbl_coro = {0, 0, 0, 0, coro_cv_free};	254	static MGVTBL vtbl_coro = {0, 0, 0, 0, coro_cv_free};
225		255
		256	#define CORO_MAGIC(cv) \
		257	SvMAGIC (cv) \
		258	? SvMAGIC (cv)->mg_type == PERL_MAGIC_coro \
		259	? SvMAGIC (cv) \
		260	: mg_find ((SV *)cv, PERL_MAGIC_coro) \
		261	: 0
		262
226	/* the next two functions merely cache the padlists */	263	/* the next two functions merely cache the padlists */
227	static void	264	static void
228	get_padlist (pTHX_ CV *cv)	265	get_padlist (CV *cv)
229	{	266	{
230	MAGIC mg = mg_find ((SV )cv, PERL_MAGIC_coro);	267	MAGIC *mg = CORO_MAGIC (cv);
		268	AV *av;
231		269
232	if (mg && AvFILLp ((AV *)mg->mg_obj) >= 0)	270	if (mg && AvFILLp ((av = (AV *)mg->mg_obj)) >= 0)
233	CvPADLIST (cv) = (AV )av_pop ((AV )mg->mg_obj);	271	CvPADLIST (cv) = (AV *)AvARRAY (av)[AvFILLp (av)--];
234	else	272	else
235	{	273	{
236	#if 0	274	#if PREFER_PERL_FUNCTIONS
237	/* this should work - but it doesn't :( */	275	/* this is probably cleaner, but also slower? */
238	CV *cp = Perl_cv_clone (aTHX_ cv);	276	CV *cp = Perl_cv_clone (cv);
239	CvPADLIST (cv) = CvPADLIST (cp);	277	CvPADLIST (cv) = CvPADLIST (cp);
240	CvPADLIST (cp) = 0;	278	CvPADLIST (cp) = 0;
241	SvREFCNT_dec (cp);	279	SvREFCNT_dec (cp);
242	#else	280	#else
243	CvPADLIST (cv) = coro_clone_padlist (aTHX_ cv);	281	CvPADLIST (cv) = coro_clone_padlist (cv);
244	#endif	282	#endif
245	}	283	}
246	}	284	}
247		285
248	static void	286	static void
249	put_padlist (pTHX_ CV *cv)	287	put_padlist (CV *cv)
250	{	288	{
251	MAGIC mg = mg_find ((SV )cv, PERL_MAGIC_coro);	289	MAGIC *mg = CORO_MAGIC (cv);
		290	AV *av;
252		291
253	if (!mg)	292	if (!mg)
254	{	293	{
255	sv_magic ((SV *)cv, 0, PERL_MAGIC_coro, 0, 0);	294	sv_magic ((SV *)cv, 0, PERL_MAGIC_coro, 0, 0);
256	mg = mg_find ((SV *)cv, PERL_MAGIC_coro);	295	mg = mg_find ((SV *)cv, PERL_MAGIC_coro);
257	mg->mg_virtual = &vtbl_coro;	296	mg->mg_virtual = &vtbl_coro;
258	mg->mg_obj = (SV *)newAV ();	297	mg->mg_obj = (SV *)newAV ();
259	}	298	}
260		299
261	av_push ((AV )mg->mg_obj, (SV )CvPADLIST (cv));	300	av = (AV *)mg->mg_obj;
		301
		302	if (AvFILLp (av) >= AvMAX (av))
		303	av_extend (av, AvMAX (av) + 1);
		304
		305	AvARRAY (av)[++AvFILLp (av)] = (SV *)CvPADLIST (cv);
262	}	306	}
263		307
264	#define SB do {	308	#define SB do {
265	#define SE } while (0)	309	#define SE } while (0)
266		310
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	311	#define REPLACE_SV(sv,val) SB SvREFCNT_dec (sv); (sv) = (val); (val) = 0; SE
271		312
272	static void	313	static void
273	load_state(pTHX_ Coro__State c)	314	load_perl (Coro__State c)
274	{	315	{
275	PL_dowarn = c->dowarn;	316	#define VAR(name,type) PL_ ## name = c->name;
276	PL_in_eval = c->in_eval;	317	# include "state.h"
277		318	#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		319
310	if (c->defav) REPLACE_SV (GvAV (PL_defgv), c->defav);	320	if (c->defav) REPLACE_SV (GvAV (PL_defgv), c->defav);
311	if (c->defsv) REPLACE_SV (DEFSV , c->defsv);	321	if (c->defsv) REPLACE_SV (DEFSV , c->defsv);
312	if (c->errsv) REPLACE_SV (ERRSV , c->errsv);	322	if (c->errsv) REPLACE_SV (ERRSV , c->errsv);
		323	if (c->irssv)
		324	{
		325	if (c->irssv == PL_rs \|\| sv_eq (PL_rs, c->irssv))
		326	SvREFCNT_dec (c->irssv);
		327	else
		328	{
		329	REPLACE_SV (PL_rs, c->irssv);
		330	if (!c->irssv_sv) c->irssv_sv = get_sv ("/", 0);
		331	sv_setsv (c->irssv_sv, PL_rs);
		332	}
		333	}
313		334
314	{	335	{
315	dSP;	336	dSP;
316	CV *cv;	337	CV *cv;
317		338
318	/* now do the ugly restore mess */	339	/* now do the ugly restore mess */
319	while ((cv = (CV *)POPs))	340	while ((cv = (CV *)POPs))
320	{	341	{
321	AV padlist = (AV )POPs;
322
323	if (padlist)
324	{
325	put_padlist (aTHX_ cv); /* mark this padlist as available */	342	put_padlist (cv); /* mark this padlist as available */
326	CvPADLIST(cv) = padlist;	343	CvDEPTH (cv) = PTR2IV (POPs);
327	}	344	CvPADLIST (cv) = (AV *)POPs;
328
329	++CvDEPTH(cv);
330	}	345	}
331		346
332	PUTBACK;	347	PUTBACK;
333	}	348	}
334	}	349	}
335		350
336	static void	351	static void
337	save_state(pTHX_ Coro__State c, int flags)	352	save_perl (Coro__State c)
338	{	353	{
339	{	354	{
340	dSP;	355	dSP;
341	I32 cxix = cxstack_ix;	356	I32 cxix = cxstack_ix;
342	PERL_CONTEXT *ccstk = cxstack;	357	PERL_CONTEXT *ccstk = cxstack;
…		…
345	/*	360	/*
346	* the worst thing you can imagine happens first - we have to save	361	* the worst thing you can imagine happens first - we have to save
347	* (and reinitialize) all cv's in the whole callchain :(	362	* (and reinitialize) all cv's in the whole callchain :(
348	*/	363	*/
349		364
		365	EXTEND (SP, 3 + 1);
350	PUSHs (Nullsv);	366	PUSHs (Nullsv);
351	/* this loop was inspired by pp_caller */	367	/* this loop was inspired by pp_caller */
352	for (;;)	368	for (;;)
353	{	369	{
354	while (cxix >= 0)	370	while (cxix >= 0)
355	{	371	{
356	PERL_CONTEXT *cx = &ccstk[cxix--];	372	PERL_CONTEXT *cx = &ccstk[cxix--];
357		373
358	if (CxTYPE(cx) == CXt_SUB)	374	if (CxTYPE (cx) == CXt_SUB)
359	{	375	{
360	CV *cv = cx->blk_sub.cv;	376	CV *cv = cx->blk_sub.cv;
		377
361	if (CvDEPTH(cv))	378	if (CvDEPTH (cv))
362	{	379	{
363	EXTEND (SP, CvDEPTH(cv)*2);	380	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));	381	PUSHs ((SV *)CvPADLIST (cv));
		382	PUSHs (INT2PTR (SV *, CvDEPTH (cv)));
373	PUSHs ((SV *)cv);	383	PUSHs ((SV *)cv);
374		384
		385	CvDEPTH (cv) = 0;
375	get_padlist (aTHX_ cv);	386	get_padlist (cv);
376	}	387	}
377	}	388	}
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	}	389	}
387		390
388	if (top_si->si_type == PERLSI_MAIN)	391	if (top_si->si_type == PERLSI_MAIN)
389	break;	392	break;
390		393
…		…
394	}	397	}
395		398
396	PUTBACK;	399	PUTBACK;
397	}	400	}
398		401
399	c->defav = flags & TRANSFER_SAVE_DEFAV ? (AV *)SvREFCNT_inc (GvAV (PL_defgv)) : 0;	402	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;	403	c->defsv = c->save & CORO_SAVE_DEFSV ? SvREFCNT_inc (DEFSV) : 0;
401	c->errsv = flags & TRANSFER_SAVE_ERRSV ? SvREFCNT_inc (ERRSV) : 0;	404	c->errsv = c->save & CORO_SAVE_ERRSV ? SvREFCNT_inc (ERRSV) : 0;
		405	c->irssv = c->save & CORO_SAVE_IRSSV ? SvREFCNT_inc (PL_rs) : 0;
402		406
403	c->dowarn = PL_dowarn;	407	#define VAR(name,type)c->name = PL_ ## name;
404	c->in_eval = PL_in_eval;	408	# include "state.h"
405		409	#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	}	410	}
438		411
439	/*	412	/*
440	* allocate various perl stacks. This is an exact copy	413	* allocate various perl stacks. This is an exact copy
441	* of perl.c:init_stacks, except that it uses less memory	414	* of perl.c:init_stacks, except that it uses less memory
442	* on the (sometimes correct) assumption that coroutines do	415	* on the (sometimes correct) assumption that coroutines do
443	* not usually need a lot of stackspace.	416	* not usually need a lot of stackspace.
444	*/	417	*/
		418	#if PREFER_PERL_FUNCTIONS
		419	# define coro_init_stacks init_stacks
		420	#else
445	static void	421	static void
446	coro_init_stacks (pTHX)	422	coro_init_stacks ()
447	{	423	{
448	LOCK;
449
450	PL_curstackinfo = new_stackinfo(96, 1024/sizeof(PERL_CONTEXT) - 1);	424	PL_curstackinfo = new_stackinfo(128, 1024/sizeof(PERL_CONTEXT));
451	PL_curstackinfo->si_type = PERLSI_MAIN;	425	PL_curstackinfo->si_type = PERLSI_MAIN;
452	PL_curstack = PL_curstackinfo->si_stack;	426	PL_curstack = PL_curstackinfo->si_stack;
453	PL_mainstack = PL_curstack; /* remember in case we switch stacks */	427	PL_mainstack = PL_curstack; /* remember in case we switch stacks */
454		428
455	PL_stack_base = AvARRAY(PL_curstack);	429	PL_stack_base = AvARRAY(PL_curstack);
456	PL_stack_sp = PL_stack_base;	430	PL_stack_sp = PL_stack_base;
457	PL_stack_max = PL_stack_base + AvMAX(PL_curstack);	431	PL_stack_max = PL_stack_base + AvMAX(PL_curstack);
458		432
459	New(50,PL_tmps_stack,96,SV*);	433	New(50,PL_tmps_stack,128,SV*);
460	PL_tmps_floor = -1;	434	PL_tmps_floor = -1;
461	PL_tmps_ix = -1;	435	PL_tmps_ix = -1;
462	PL_tmps_max = 96;	436	PL_tmps_max = 128;
463		437
464	New(54,PL_markstack,16,I32);	438	New(54,PL_markstack,32,I32);
465	PL_markstack_ptr = PL_markstack;	439	PL_markstack_ptr = PL_markstack;
466	PL_markstack_max = PL_markstack + 16;	440	PL_markstack_max = PL_markstack + 32;
467		441
468	#ifdef SET_MARK_OFFSET	442	#ifdef SET_MARK_OFFSET
469	SET_MARK_OFFSET;	443	SET_MARK_OFFSET;
470	#endif	444	#endif
471		445
472	New(54,PL_scopestack,16,I32);	446	New(54,PL_scopestack,32,I32);
473	PL_scopestack_ix = 0;	447	PL_scopestack_ix = 0;
474	PL_scopestack_max = 16;	448	PL_scopestack_max = 32;
475		449
476	New(54,PL_savestack,96,ANY);	450	New(54,PL_savestack,64,ANY);
477	PL_savestack_ix = 0;	451	PL_savestack_ix = 0;
478	PL_savestack_max = 96;	452	PL_savestack_max = 64;
479		453
480	#if PERL_VERSION < 9	454	#if !PERL_VERSION_ATLEAST (5,9,0)
481	New(54,PL_retstack,8,OP*);	455	New(54,PL_retstack,16,OP*);
482	PL_retstack_ix = 0;	456	PL_retstack_ix = 0;
483	PL_retstack_max = 8;	457	PL_retstack_max = 16;
484	#endif	458	#endif
485
486	UNLOCK;
487	}	459	}
		460	#endif
488		461
489	/*	462	/*
490	* destroy the stacks, the callchain etc...	463	* destroy the stacks, the callchain etc...
491	*/	464	*/
492	static void	465	static void
493	destroy_stacks(pTHX)	466	coro_destroy_stacks ()
494	{	467	{
495	if (!IN_DESTRUCT)	468	if (!IN_DESTRUCT)
496	{	469	{
497	/* is this ugly, I ask? */	470	/* restore all saved variables and stuff */
498	LEAVE_SCOPE (0);	471	LEAVE_SCOPE (0);
		472	assert (PL_tmps_floor == -1);
499		473
500	/* sure it is, but more important: is it correct?? :/ */	474	/* free all temporaries */
501	FREETMPS;	475	FREETMPS;
		476	assert (PL_tmps_ix == -1);
502		477
		478	/* unwind all extra stacks */
503	/POPSTACK_TO (PL_mainstack);//D//use/	479	POPSTACK_TO (PL_mainstack);
		480
		481	/* unwind main stack */
		482	dounwind (-1);
504	}	483	}
505		484
506	while (PL_curstackinfo->si_next)	485	while (PL_curstackinfo->si_next)
507	PL_curstackinfo = PL_curstackinfo->si_next;	486	PL_curstackinfo = PL_curstackinfo->si_next;
508		487
509	while (PL_curstackinfo)	488	while (PL_curstackinfo)
510	{	489	{
511	PERL_SI *p = PL_curstackinfo->si_prev;	490	PERL_SI *p = PL_curstackinfo->si_prev;
512		491
513	{ /D//remove/
514	dSP;
515	SWITCHSTACK (PL_curstack, PL_curstackinfo->si_stack);
516	PUTBACK; /* possibly superfluous */
517	}
518
519	if (!IN_DESTRUCT)	492	if (!IN_DESTRUCT)
520	{
521	dounwind (-1);/D//remove/
522	SvREFCNT_dec (PL_curstackinfo->si_stack);	493	SvREFCNT_dec (PL_curstackinfo->si_stack);
523	}
524		494
525	Safefree (PL_curstackinfo->si_cxstack);	495	Safefree (PL_curstackinfo->si_cxstack);
526	Safefree (PL_curstackinfo);	496	Safefree (PL_curstackinfo);
527	PL_curstackinfo = p;	497	PL_curstackinfo = p;
528	}	498	}
529		499
530	Safefree (PL_tmps_stack);	500	Safefree (PL_tmps_stack);
531	Safefree (PL_markstack);	501	Safefree (PL_markstack);
532	Safefree (PL_scopestack);	502	Safefree (PL_scopestack);
533	Safefree (PL_savestack);	503	Safefree (PL_savestack);
534	#if PERL_VERSION < 9	504	#if !PERL_VERSION_ATLEAST (5,9,0)
535	Safefree (PL_retstack);	505	Safefree (PL_retstack);
536	#endif	506	#endif
537	}	507	}
538		508
539	static void	509	static void
540	allocate_stack (Coro__State ctx, int alloc)	510	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	{	511	{
602	/*	512	/*
603	* emulate part of the perl startup here.	513	* emulate part of the perl startup here.
604	*/	514	*/
605	dTHX;	515
		516	coro_init_stacks ();
		517
		518	PL_curcop = &PL_compiling;
		519	PL_in_eval = EVAL_NULL;
		520	PL_curpm = 0;
		521	PL_localizing = 0;
		522	PL_dirty = 0;
		523	PL_restartop = 0;
		524
		525	{
		526	dSP;
		527	LOGOP myop;
		528
		529	SvREFCNT_dec (GvAV (PL_defgv));
		530	GvAV (PL_defgv) = coro->args; coro->args = 0;
		531
		532	Zero (&myop, 1, LOGOP);
		533	myop.op_next = Nullop;
		534	myop.op_flags = OPf_WANT_VOID;
		535
		536	PUSHMARK (SP);
		537	XPUSHs ((SV *)get_cv ("Coro::State::_coro_init", FALSE));
		538	PUTBACK;
		539	PL_op = (OP *)&myop;
		540	PL_op = PL_ppaddr[OP_ENTERSUB](aTHX);
		541	SPAGAIN;
		542	}
		543
		544	ENTER; /* necessary e.g. for dounwind */
		545	}
		546
		547	static void
		548	free_coro_mortal ()
		549	{
		550	if (coro_mortal)
		551	{
		552	SvREFCNT_dec (coro_mortal);
		553	coro_mortal = 0;
		554	}
		555	}
		556
		557	/* inject a fake call to Coro::State::_cctx_init into the execution */
		558	static void NOINLINE
		559	prepare_cctx (coro_cctx *cctx)
		560	{
606	dSP;	561	dSP;
607	Coro__State ctx = (Coro__State)arg;	562	LOGOP myop;
608	SV sub_init = (SV )get_cv (SUB_INIT, FALSE);
609		563
610	coro_init_stacks (aTHX);	564	Zero (&myop, 1, LOGOP);
611	/PL_curcop = 0;/	565	myop.op_next = PL_op;
612	/PL_in_eval = PL_in_eval;/ /* inherit */	566	myop.op_flags = OPf_WANT_VOID \| OPf_STACKED;
613	SvREFCNT_dec (GvAV (PL_defgv));
614	GvAV (PL_defgv) = ctx->args; ctx->args = 0;
615		567
		568	PUSHMARK (SP);
		569	EXTEND (SP, 2);
		570	PUSHs (sv_2mortal (newSViv (PTR2IV (cctx))));
		571	PUSHs ((SV *)get_cv ("Coro::State::_cctx_init", FALSE));
		572	PUTBACK;
		573	PL_op = (OP *)&myop;
		574	PL_op = PL_ppaddr[OP_ENTERSUB](aTHX);
616	SPAGAIN;	575	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	}	576	}
657		577
658	static void	578	static void
659	continue_coro (void *arg)	579	coro_run (void *arg)
660	{	580	{
		581	/* coro_run is the alternative tail of transfer(), so unlock here. */
		582	UNLOCK;
		583
661	/*	584	/*
662	* this is a _very_ stripped down perl interpreter ;)	585	* this is a _very_ stripped down perl interpreter ;)
663	*/	586	*/
664	dTHX;
665	Coro__State ctx = (Coro__State)arg;
666
667	PL_top_env = &PL_start_env;	587	PL_top_env = &PL_start_env;
668		588
669	ctx->cursp = 0;	589	/* inject call to cctx_init */
670	PL_op = PL_op->op_next;	590	prepare_cctx ((coro_cctx *)arg);
671	CALLRUNOPS(aTHX);
672		591
		592	/* somebody will hit me for both perl_run and PL_restartop */
		593	PL_restartop = PL_op;
		594	perl_run (PL_curinterp);
		595
		596	fputs ("FATAL: C coroutine fell over the edge of the world, aborting. Did you call exit in a coroutine?\n", stderr);
673	abort ();	597	abort ();
674	}	598	}
675		599
		600	static coro_cctx *
		601	cctx_new ()
		602	{
		603	coro_cctx *cctx;
		604
		605	++cctx_count;
		606
		607	Newz (0, cctx, 1, coro_cctx);
		608
		609	#if HAVE_MMAP
		610
		611	cctx->ssize = ((STACKSIZE * sizeof (long) + PAGESIZE - 1) / PAGESIZE + STACKGUARD) * PAGESIZE;
		612	/* mmap supposedly does allocate-on-write for us */
		613	cctx->sptr = mmap (0, cctx->ssize, PROT_EXEC\|PROT_READ\|PROT_WRITE, MAP_PRIVATE\|MAP_ANONYMOUS, 0, 0);
		614
		615	if (cctx->sptr == (void *)-1)
		616	{
		617	perror ("FATAL: unable to mmap stack for coroutine");
		618	_exit (EXIT_FAILURE);
		619	}
		620
		621	# if STACKGUARD
		622	mprotect (cctx->sptr, STACKGUARD * PAGESIZE, PROT_NONE);
		623	# endif
		624
		625	#else
		626
		627	cctx->ssize = STACKSIZE * (long)sizeof (long);
		628	New (0, cctx->sptr, STACKSIZE, long);
		629
		630	if (!cctx->sptr)
		631	{
		632	perror ("FATAL: unable to malloc stack for coroutine");
		633	_exit (EXIT_FAILURE);
		634	}
		635
		636	#endif
		637
		638	#if USE_VALGRIND
		639	cctx->valgrind_id = VALGRIND_STACK_REGISTER (
		640	STACKGUARD * PAGESIZE + (char *)cctx->sptr,
		641	cctx->ssize + (char *)cctx->sptr
		642	);
		643	#endif
		644
		645	coro_create (&cctx->cctx, coro_run, (void *)cctx, cctx->sptr, cctx->ssize);
		646
		647	return cctx;
		648	}
		649
		650	static void
		651	cctx_destroy (coro_cctx *cctx)
		652	{
		653	if (!cctx)
		654	return;
		655
		656	--cctx_count;
		657
		658	#if USE_VALGRIND
		659	VALGRIND_STACK_DEREGISTER (cctx->valgrind_id);
		660	#endif
		661
		662	#if HAVE_MMAP
		663	munmap (cctx->sptr, cctx->ssize);
		664	#else
		665	Safefree (cctx->sptr);
		666	#endif
		667
		668	Safefree (cctx);
		669	}
		670
		671	static coro_cctx *
		672	cctx_get ()
		673	{
		674	coro_cctx *cctx;
		675
		676	if (cctx_first)
		677	{
		678	cctx = cctx_first;
		679	cctx_first = cctx->next;
		680	--cctx_idle;
		681	}
		682	else
		683	{
		684	cctx = cctx_new ();
		685	PL_op = PL_op->op_next;
		686	}
		687
		688	return cctx;
		689	}
		690
		691	static void
		692	cctx_put (coro_cctx *cctx)
		693	{
		694	/* free another cctx if overlimit */
		695	if (cctx_idle >= MAX_IDLE_CCTX)
		696	{
		697	coro_cctx *first = cctx_first;
		698	cctx_first = first->next;
		699	--cctx_idle;
		700
		701	assert (!first->inuse);
		702	cctx_destroy (first);
		703	}
		704
		705	++cctx_idle;
		706	cctx->next = cctx_first;
		707	cctx_first = cctx;
		708	}
		709
676	/* never call directly, always through the coro_state_transfer global variable */	710	/* never call directly, always through the coro_state_transfer global variable */
677	static void	711	static void NOINLINE
678	transfer_impl (pTHX_ struct coro prev, struct coro next, int flags)	712	transfer (struct coro prev, struct coro next)
679	{	713	{
680	dSTACKLEVEL;	714	dSTACKLEVEL;
681		715
		716	/* sometimes transfer is only called to set idle_sp */
		717	if (!next)
		718	{
		719	((coro_cctx *)prev)->idle_sp = STACKLEVEL;
		720	assert (((coro_cctx )prev)->idle_te = PL_top_env); / just for the side-effect when asserts are enabled */
		721	}
682	if (prev != next)	722	else if (prev != next)
683	{	723	{
684	/* has this coro been created yet? */	724	coro_cctx *prev__cctx;
685	if (next->mainstack)	725
		726	if (prev->flags & CF_NEW)
686	{	727	{
687	LOCK;	728	/* create a new empty context */
688	SAVE (prev, flags);	729	Newz (0, prev->cctx, 1, coro_cctx);
689	LOAD (next);	730	prev->cctx->inuse = 1;
690	UNLOCK;	731	prev->flags &= ~CF_NEW;
691		732	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	}	733	}
725	else if (next->tmps_ix == -2)	734
726	croak ("tried to transfer to running coroutine");	735	/TODO: must not croak here /
		736	if (!prev->flags & CF_RUNNING)
		737	croak ("Coro::State::transfer called with non-running prev Coro::State, but can only transfer from running states");
		738
		739	if (next->flags & CF_RUNNING)
		740	croak ("Coro::State::transfer called with running next Coro::State, but can only transfer to inactive states");
		741
		742	if (next->flags & CF_DESTROYED)
		743	croak ("Coro::State::transfer called with destroyed next Coro::State, but can only transfer to inactive states");
		744
		745	prev->flags &= ~CF_RUNNING;
		746	next->flags \|= CF_RUNNING;
		747
		748	LOCK;
		749
		750	if (next->flags & CF_NEW)
		751	{
		752	/* need to start coroutine */
		753	next->flags &= ~CF_NEW;
		754	/* first get rid of the old state */
		755	save_perl (prev);
		756	/* setup coroutine call */
		757	setup_coro (next);
		758	/* need a new stack */
		759	assert (!next->cctx);
		760	}
727	else	761	else
728	{	762	{
729	LOCK;	763	/* coroutine already started */
730	SAVE (prev, -1); /* first get rid of the old state */	764	save_perl (prev);
731	UNLOCK;	765	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	}	766	}
770	}
771		767
772	LOCK;	768	prev__cctx = prev->cctx;
773	if (coro_mortal)	769
774	{	770	/* possibly "free" the cctx */
775	SvREFCNT_dec (coro_mortal);	771	if (prev__cctx->idle_sp == STACKLEVEL)
		772	{
		773	/* I assume that STACKLEVEL is a stronger indicator than PL_top_env changes */
		774	assert (("ERROR: current top_env must equal previous top_env", PL_top_env == prev__cctx->idle_te));
		775
		776	prev->cctx = 0;
		777
		778	cctx_put (prev__cctx);
		779	prev__cctx->inuse = 0;
		780	}
		781
		782	if (!next->cctx)
		783	{
		784	next->cctx = cctx_get ();
		785	assert (!next->cctx->inuse);
		786	next->cctx->inuse = 1;
		787	}
		788
		789	if (prev__cctx != next->cctx)
		790	{
		791	prev__cctx->top_env = PL_top_env;
		792	PL_top_env = next->cctx->top_env;
		793	coro_transfer (&prev__cctx->cctx, &next->cctx->cctx);
		794	}
		795
776	coro_mortal = 0;	796	free_coro_mortal ();
777	}
778	UNLOCK;	797	UNLOCK;
		798	}
779	}	799	}
780		800
781	/* use this function pointer to call the above function */	801	struct transfer_args
782	/* this is done to increase chances of the compiler not inlining the call */	802	{
783	void (coro_state_transfer)(pTHX_ struct coro prev, struct coro *next, int flags) = transfer_impl;	803	struct coro prev, next;
		804	};
784		805
785	#define SV_CORO(sv,func) \	806	#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		807
806	static void	808	static int
807	coro_state_destroy (struct coro *coro)	809	coro_state_destroy (struct coro *coro)
808	{	810	{
809	if (coro->refcnt--)	811	if (coro->flags & CF_DESTROYED)
810	return;	812	return 0;
		813
		814	coro->flags \|= CF_DESTROYED;
811		815
812	if (coro->mainstack && coro->mainstack != main_mainstack)	816	if (coro->mainstack && coro->mainstack != main_mainstack)
813	{	817	{
		818	assert (!(coro->flags & CF_RUNNING));
		819
814	struct coro temp;	820	struct coro temp;
		821	Zero (&temp, 1, struct coro);
		822	temp.save = CORO_SAVE_ALL;
815		823
816	SAVE (aTHX_ (&temp), TRANSFER_SAVE_ALL);	824	if (coro->flags & CF_RUNNING)
817	LOAD (aTHX_ coro);	825	croak ("FATAL: tried to destroy currently running coroutine");
818		826
		827	save_perl (&temp);
		828	load_perl (coro);
		829
819	destroy_stacks (aTHX);	830	coro_destroy_stacks ();
820		831
821	LOAD ((&temp)); /* this will get rid of defsv etc.. */	832	load_perl (&temp); /* this will get rid of defsv etc.. */
822		833
823	coro->mainstack = 0;	834	coro->mainstack = 0;
824	}	835	}
825		836
826	deallocate_stack (coro);	837	cctx_destroy (coro->cctx);
827	SvREFCNT_dec (coro->args);	838	SvREFCNT_dec (coro->args);
828	Safefree (coro);	839
		840	return 1;
829	}	841	}
830		842
831	static int	843	static int
832	coro_state_clear (SV sv, MAGIC mg)	844	coro_state_free (pTHX_ SV sv, MAGIC mg)
833	{	845	{
834	struct coro coro = (struct coro )mg->mg_ptr;	846	struct coro coro = (struct coro )mg->mg_ptr;
835	mg->mg_ptr = 0;	847	mg->mg_ptr = 0;
836		848
		849	if (--coro->refcnt < 0)
		850	{
837	coro_state_destroy (coro);	851	coro_state_destroy (coro);
		852	Safefree (coro);
		853	}
838		854
839	return 0;	855	return 0;
840	}	856	}
841		857
842	static int	858	static int
843	coro_state_dup (MAGIC mg, CLONE_PARAMS params)	859	coro_state_dup (pTHX_ MAGIC mg, CLONE_PARAMS params)
844	{	860	{
845	struct coro coro = (struct coro )mg->mg_ptr;	861	struct coro coro = (struct coro )mg->mg_ptr;
846		862
847	++coro->refcnt;	863	++coro->refcnt;
848		864
849	return 0;	865	return 0;
850	}	866	}
851		867
852	static MGVTBL coro_state_vtbl = { 0, 0, 0, 0, coro_state_clear, 0, coro_state_dup, 0 };	868	static MGVTBL coro_state_vtbl = {
		869	0, 0, 0, 0,
		870	coro_state_free,
		871	0,
		872	#ifdef MGf_DUP
		873	coro_state_dup,
		874	#else
		875	# define MGf_DUP 0
		876	#endif
		877	};
853		878
854	static struct coro *	879	static struct coro *
855	SvSTATE (SV *coro)	880	SvSTATE (SV *coro)
856	{	881	{
857	MAGIC *mg = SvMAGIC (SvROK (coro) ? SvRV (coro) : coro);	882	HV *stash;
		883	MAGIC *mg;
		884
		885	if (SvROK (coro))
		886	coro = SvRV (coro);
		887
		888	stash = SvSTASH (coro);
		889	if (stash != coro_stash && stash != coro_state_stash)
		890	{
		891	/* very slow, but rare, check */
		892	if (!sv_derived_from (sv_2mortal (newRV_inc (coro)), "Coro::State"))
		893	croak ("Coro::State object required");
		894	}
		895
		896	mg = SvMAGIC (coro);
858	assert (mg->mg_type == PERL_MAGIC_ext);	897	assert (mg->mg_type == PERL_MAGIC_ext);
859	return (struct coro *)mg->mg_ptr;	898	return (struct coro *)mg->mg_ptr;
860	}	899	}
861		900
862	static void	901	static void
		902	prepare_transfer (struct transfer_args ta, SV prev_sv, SV *next_sv)
		903	{
		904	ta->prev = SvSTATE (prev_sv);
		905	ta->next = SvSTATE (next_sv);
		906	}
		907
		908	static void
863	api_transfer (pTHX_ SV prev, SV next, int flags)	909	api_transfer (SV prev_sv, SV next_sv)
864	{	910	{
865	SV_CORO (prev, "Coro::transfer");	911	struct transfer_args ta;
866	SV_CORO (next, "Coro::transfer");
867		912
868	coro_state_transfer (aTHX_ SvSTATE (prev), SvSTATE (next), flags);	913	prepare_transfer (&ta, prev_sv, next_sv);
		914	TRANSFER (ta);
		915	}
		916
		917	static int
		918	api_save (SV *coro_sv, int new_save)
		919	{
		920	struct coro *coro = SvSTATE (coro_sv);
		921	int old_save = coro->save;
		922
		923	if (new_save >= 0)
		924	coro->save = new_save;
		925
		926	return old_save;
869	}	927	}
870		928
871	/ Coro ******************************************************************/	929	/ Coro ******************************************************************/
872		930
873	#define PRIO_MAX 3	931	#define PRIO_MAX 3
…		…
876	#define PRIO_LOW -1	934	#define PRIO_LOW -1
877	#define PRIO_IDLE -3	935	#define PRIO_IDLE -3
878	#define PRIO_MIN -4	936	#define PRIO_MIN -4
879		937
880	/* for Coro.pm */	938	/* for Coro.pm */
881	static GV coro_current, coro_idle;	939	static SV *coro_current;
882	static AV *coro_ready [PRIO_MAX-PRIO_MIN+1];	940	static AV *coro_ready [PRIO_MAX-PRIO_MIN+1];
883	static int coro_nready;	941	static int coro_nready;
884		942
885	static void	943	static void
886	coro_enq (pTHX_ SV *sv)	944	coro_enq (SV *coro_sv)
887	{	945	{
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);	946	av_push (coro_ready [SvSTATE (coro_sv)->prio - PRIO_MIN], coro_sv);
900	coro_nready++;	947	coro_nready++;
901	}	948	}
902		949
903	static SV *	950	static SV *
904	coro_deq (pTHX_ int min_prio)	951	coro_deq (int min_prio)
905	{	952	{
906	int prio = PRIO_MAX - PRIO_MIN;	953	int prio = PRIO_MAX - PRIO_MIN;
907		954
908	min_prio -= PRIO_MIN;	955	min_prio -= PRIO_MIN;
909	if (min_prio < 0)	956	if (min_prio < 0)
…		…
917	}	964	}
918		965
919	return 0;	966	return 0;
920	}	967	}
921		968
922	static void	969	static int
923	api_ready (SV *coro)	970	api_ready (SV *coro_sv)
924	{	971	{
925	dTHX;	972	struct coro *coro;
926		973
927	if (SvROK (coro))	974	if (SvROK (coro_sv))
928	coro = SvRV (coro);	975	coro_sv = SvRV (coro_sv);
		976
		977	coro = SvSTATE (coro_sv);
		978
		979	if (coro->flags & CF_READY)
		980	return 0;
		981
		982	coro->flags \|= CF_READY;
929		983
930	LOCK;	984	LOCK;
931	coro_enq (aTHX_ SvREFCNT_inc (coro));	985	coro_enq (SvREFCNT_inc (coro_sv));
932	UNLOCK;	986	UNLOCK;
		987
		988	return 1;
		989	}
		990
		991	static int
		992	api_is_ready (SV *coro_sv)
		993	{
		994	return !!(SvSTATE (coro_sv)->flags & CF_READY);
		995	}
		996
		997	static void
		998	prepare_schedule (struct transfer_args *ta)
		999	{
		1000	SV prev_sv, next_sv;
		1001
		1002	for (;;)
		1003	{
		1004	LOCK;
		1005	next_sv = coro_deq (PRIO_MIN);
		1006	UNLOCK;
		1007
		1008	/* nothing to schedule: call the idle handler */
		1009	if (!next_sv)
		1010	{
		1011	dSP;
		1012
		1013	ENTER;
		1014	SAVETMPS;
		1015
		1016	PUSHMARK (SP);
		1017	PUTBACK;
		1018	call_sv (get_sv ("Coro::idle", FALSE), G_DISCARD);
		1019
		1020	FREETMPS;
		1021	LEAVE;
		1022	continue;
		1023	}
		1024
		1025	ta->next = SvSTATE (next_sv);
		1026
		1027	/* cannot transfer to destroyed coros, skip and look for next */
		1028	if (ta->next->flags & CF_DESTROYED)
		1029	{
		1030	SvREFCNT_dec (next_sv);
		1031	continue;
		1032	}
		1033
		1034	break;
		1035	}
		1036
		1037	/* free this only after the transfer */
		1038	prev_sv = SvRV (coro_current);
		1039	SvRV_set (coro_current, next_sv);
		1040	ta->prev = SvSTATE (prev_sv);
		1041
		1042	assert (ta->next->flags & CF_READY);
		1043	ta->next->flags &= ~CF_READY;
		1044
		1045	LOCK;
		1046	free_coro_mortal ();
		1047	coro_mortal = prev_sv;
		1048	UNLOCK;
		1049	}
		1050
		1051	static void
		1052	prepare_cede (struct transfer_args *ta)
		1053	{
		1054	api_ready (coro_current);
		1055	prepare_schedule (ta);
		1056	}
		1057
		1058	static int
		1059	prepare_cede_notself (struct transfer_args *ta)
		1060	{
		1061	if (coro_nready)
		1062	{
		1063	SV *prev = SvRV (coro_current);
		1064	prepare_schedule (ta);
		1065	api_ready (prev);
		1066	return 1;
		1067	}
		1068	else
		1069	return 0;
933	}	1070	}
934		1071
935	static void	1072	static void
936	api_schedule (void)	1073	api_schedule (void)
937	{	1074	{
938	dTHX;	1075	struct transfer_args ta;
939		1076
940	SV prev, next;	1077	prepare_schedule (&ta);
941		1078	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	}	1079	}
963		1080
964	static void	1081	static int
965	api_cede (void)	1082	api_cede (void)
966	{	1083	{
967	dTHX;	1084	struct transfer_args ta;
968		1085
969	LOCK;	1086	prepare_cede (&ta);
970	coro_enq (aTHX_ SvREFCNT_inc (SvRV (GvSV (coro_current))));
971	UNLOCK;
972		1087
973	api_schedule ();	1088	if (ta.prev != ta.next)
		1089	{
		1090	TRANSFER (ta);
		1091	return 1;
		1092	}
		1093	else
		1094	return 0;
		1095	}
		1096
		1097	static int
		1098	api_cede_notself (void)
		1099	{
		1100	struct transfer_args ta;
		1101
		1102	if (prepare_cede_notself (&ta))
		1103	{
		1104	TRANSFER (ta);
		1105	return 1;
		1106	}
		1107	else
		1108	return 0;
974	}	1109	}
975		1110
976	MODULE = Coro::State PACKAGE = Coro::State	1111	MODULE = Coro::State PACKAGE = Coro::State
977		1112
978	PROTOTYPES: DISABLE	1113	PROTOTYPES: DISABLE
979		1114
980	BOOT:	1115	BOOT:
981	{ /* {} necessary for stoopid perl-5.6.x */	1116	{
982	#ifdef USE_ITHREADS	1117	#ifdef USE_ITHREADS
983	MUTEX_INIT (&coro_mutex);	1118	MUTEX_INIT (&coro_mutex);
984	#endif	1119	#endif
985	BOOT_PAGESIZE;	1120	BOOT_PAGESIZE;
986		1121
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);	1122	coro_state_stash = gv_stashpv ("Coro::State", TRUE);
990		1123
991	newCONSTSUB (coro_state_stash, "SAVE_DEFAV", newSViv (TRANSFER_SAVE_DEFAV));	1124	newCONSTSUB (coro_state_stash, "SAVE_DEFAV", newSViv (CORO_SAVE_DEFAV));
992	newCONSTSUB (coro_state_stash, "SAVE_DEFSV", newSViv (TRANSFER_SAVE_DEFSV));	1125	newCONSTSUB (coro_state_stash, "SAVE_DEFSV", newSViv (CORO_SAVE_DEFSV));
993	newCONSTSUB (coro_state_stash, "SAVE_ERRSV", newSViv (TRANSFER_SAVE_ERRSV));	1126	newCONSTSUB (coro_state_stash, "SAVE_ERRSV", newSViv (CORO_SAVE_ERRSV));
		1127	newCONSTSUB (coro_state_stash, "SAVE_IRSSV", newSViv (CORO_SAVE_IRSSV));
994	newCONSTSUB (coro_state_stash, "SAVE_CCTXT", newSViv (TRANSFER_SAVE_CCTXT));	1128	newCONSTSUB (coro_state_stash, "SAVE_ALL", newSViv (CORO_SAVE_ALL));
995		1129
996	main_mainstack = PL_mainstack;	1130	main_mainstack = PL_mainstack;
997		1131
998	coroapi.ver = CORO_API_VERSION;	1132	coroapi.ver = CORO_API_VERSION;
999	coroapi.transfer = api_transfer;	1133	coroapi.transfer = api_transfer;
…		…
1009	HV *hv;	1143	HV *hv;
1010	int i;	1144	int i;
1011		1145
1012	Newz (0, coro, 1, struct coro);	1146	Newz (0, coro, 1, struct coro);
1013	coro->args = newAV ();	1147	coro->args = newAV ();
1014		1148	coro->save = CORO_SAVE_ALL;
1015	for (i = 1; i < items; i++)	1149	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		1150
1021	hv = newHV ();	1151	hv = newHV ();
1022	sv_magicext ((SV )hv, 0, PERL_MAGIC_ext, &coro_state_vtbl, (char )coro, 0)->mg_flags \|= MGf_DUP;	1152	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));	1153	RETVAL = sv_bless (newRV_noinc ((SV *)hv), gv_stashpv (klass, 1));
		1154
		1155	for (i = 1; i < items; i++)
		1156	av_push (coro->args, newSVsv (ST (i)));
1024	}	1157	}
1025	OUTPUT:	1158	OUTPUT:
1026	RETVAL	1159	RETVAL
1027		1160
		1161	int
		1162	save (SV *coro, int new_save = -1)
		1163	CODE:
		1164	RETVAL = api_save (coro, new_save);
		1165	OUTPUT:
		1166	RETVAL
		1167
1028	void	1168	void
1029	transfer(prev, next, flags)	1169	_set_stacklevel (...)
1030	SV *prev	1170	ALIAS:
1031	SV *next	1171	Coro::State::transfer = 1
1032	int flags	1172	Coro::schedule = 2
		1173	Coro::cede = 3
		1174	Coro::cede_notself = 4
1033	CODE:	1175	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	{	1176	{
1046	RETVAL = coro->prio;	1177	struct transfer_args ta;
1047		1178
1048	if (items > 1)	1179	switch (ix)
1049	{	1180	{
		1181	case 0:
		1182	ta.prev = (struct coro )INT2PTR (coro_cctx , SvIV (ST (0)));
		1183	ta.next = 0;
		1184	break;
		1185
		1186	case 1:
1050	if (ix)	1187	if (items != 2)
1051	newprio += coro->prio;	1188	croak ("Coro::State::transfer (prev,next) expects two arguments, not %d", items);
1052		1189
1053	if (newprio < PRIO_MIN) newprio = PRIO_MIN;	1190	prepare_transfer (&ta, ST (0), ST (1));
1054	if (newprio > PRIO_MAX) newprio = PRIO_MAX;	1191	break;
1055		1192
1056	coro->prio = newprio;	1193	case 2:
		1194	prepare_schedule (&ta);
		1195	break;
		1196
		1197	case 3:
		1198	prepare_cede (&ta);
		1199	break;
		1200
		1201	case 4:
		1202	if (!prepare_cede_notself (&ta))
		1203	XSRETURN_EMPTY;
		1204
		1205	break;
1057	}	1206	}
1058	}
1059		1207
1060	void	1208	BARRIER;
1061	_clone_state_from (SV dst, SV src)	1209	TRANSFER (ta);
		1210
		1211	if (GIMME_V != G_VOID && ta.next != ta.prev)
		1212	XSRETURN_YES;
		1213	}
		1214
		1215	bool
		1216	_destroy (SV *coro_sv)
1062	CODE:	1217	CODE:
1063	{	1218	RETVAL = coro_state_destroy (SvSTATE (coro_sv));
1064	struct coro *coro_src = SvSTATE (src);	1219	OUTPUT:
1065		1220	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		1221
1072	void	1222	void
1073	_exit (code)	1223	_exit (code)
1074	int code	1224	int code
1075	PROTOTYPE: $	1225	PROTOTYPE: $
1076	CODE:	1226	CODE:
1077	_exit (code);	1227	_exit (code);
1078		1228
1079	MODULE = Coro::State PACKAGE = Coro::Cont	1229	int
		1230	cctx_count ()
		1231	CODE:
		1232	RETVAL = cctx_count;
		1233	OUTPUT:
		1234	RETVAL
1080		1235
1081	void	1236	int
1082	yield (...)	1237	cctx_idle ()
1083	PROTOTYPE: @	1238	CODE:
1084	CODE:	1239	RETVAL = cctx_idle;
1085	SV *yieldstack;	1240	OUTPUT:
1086	SV *sv;	1241	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		1242
1109	MODULE = Coro::State PACKAGE = Coro	1243	MODULE = Coro::State PACKAGE = Coro
1110		1244
1111	BOOT:	1245	BOOT:
1112	{	1246	{
1113	int i;	1247	int i;
		1248
1114	HV *stash = gv_stashpv ("Coro", TRUE);	1249	coro_stash = gv_stashpv ("Coro", TRUE);
1115		1250
1116	newCONSTSUB (stash, "PRIO_MAX", newSViv (PRIO_MAX));	1251	newCONSTSUB (coro_stash, "PRIO_MAX", newSViv (PRIO_MAX));
1117	newCONSTSUB (stash, "PRIO_HIGH", newSViv (PRIO_HIGH));	1252	newCONSTSUB (coro_stash, "PRIO_HIGH", newSViv (PRIO_HIGH));
1118	newCONSTSUB (stash, "PRIO_NORMAL", newSViv (PRIO_NORMAL));	1253	newCONSTSUB (coro_stash, "PRIO_NORMAL", newSViv (PRIO_NORMAL));
1119	newCONSTSUB (stash, "PRIO_LOW", newSViv (PRIO_LOW));	1254	newCONSTSUB (coro_stash, "PRIO_LOW", newSViv (PRIO_LOW));
1120	newCONSTSUB (stash, "PRIO_IDLE", newSViv (PRIO_IDLE));	1255	newCONSTSUB (coro_stash, "PRIO_IDLE", newSViv (PRIO_IDLE));
1121	newCONSTSUB (stash, "PRIO_MIN", newSViv (PRIO_MIN));	1256	newCONSTSUB (coro_stash, "PRIO_MIN", newSViv (PRIO_MIN));
1122		1257
1123	coro_current = gv_fetchpv ("Coro::current", TRUE, SVt_PV);	1258	coro_current = get_sv ("Coro::current", FALSE);
1124	coro_idle = gv_fetchpv ("Coro::idle" , TRUE, SVt_PV);	1259	SvREADONLY_on (coro_current);
1125		1260
1126	for (i = PRIO_MAX - PRIO_MIN + 1; i--; )	1261	for (i = PRIO_MAX - PRIO_MIN + 1; i--; )
1127	coro_ready[i] = newAV ();	1262	coro_ready[i] = newAV ();
1128		1263
1129	{	1264	{
1130	SV *sv = perl_get_sv("Coro::API", 1);	1265	SV *sv = perl_get_sv("Coro::API", 1);
1131		1266
1132	coroapi.schedule = api_schedule;	1267	coroapi.schedule = api_schedule;
		1268	coroapi.save = api_save;
1133	coroapi.cede = api_cede;	1269	coroapi.cede = api_cede;
		1270	coroapi.cede_notself = api_cede_notself;
1134	coroapi.ready = api_ready;	1271	coroapi.ready = api_ready;
		1272	coroapi.is_ready = api_is_ready;
1135	coroapi.nready = &coro_nready;	1273	coroapi.nready = &coro_nready;
1136	coroapi.current = coro_current;	1274	coroapi.current = coro_current;
1137		1275
1138	GCoroAPI = &coroapi;	1276	GCoroAPI = &coroapi;
1139	sv_setiv (sv, (IV)&coroapi);	1277	sv_setiv (sv, (IV)&coroapi);
1140	SvREADONLY_on (sv);	1278	SvREADONLY_on (sv);
1141	}	1279	}
1142	}	1280	}
1143		1281
1144	#if !PERL_MICRO
1145
1146	void	1282	void
1147	ready (self)	1283	_set_current (SV *current)
1148	SV * self
1149	PROTOTYPE: $	1284	PROTOTYPE: $
1150	CODE:	1285	CODE:
1151	api_ready (self);	1286	SvREFCNT_dec (SvRV (coro_current));
		1287	SvRV_set (coro_current, SvREFCNT_inc (SvRV (current)));
1152		1288
1153	#endif	1289	int
		1290	prio (Coro::State coro, int newprio = 0)
		1291	ALIAS:
		1292	nice = 1
		1293	CODE:
		1294	{
		1295	RETVAL = coro->prio;
		1296
		1297	if (items > 1)
		1298	{
		1299	if (ix)
		1300	newprio = coro->prio - newprio;
		1301
		1302	if (newprio < PRIO_MIN) newprio = PRIO_MIN;
		1303	if (newprio > PRIO_MAX) newprio = PRIO_MAX;
		1304
		1305	coro->prio = newprio;
		1306	}
		1307	}
		1308	OUTPUT:
		1309	RETVAL
		1310
		1311	SV *
		1312	ready (SV *self)
		1313	PROTOTYPE: $
		1314	CODE:
		1315	RETVAL = boolSV (api_ready (self));
		1316	OUTPUT:
		1317	RETVAL
		1318
		1319	SV *
		1320	is_ready (SV *self)
		1321	PROTOTYPE: $
		1322	CODE:
		1323	RETVAL = boolSV (api_is_ready (self));
		1324	OUTPUT:
		1325	RETVAL
1154		1326
1155	int	1327	int
1156	nready (...)	1328	nready (...)
1157	PROTOTYPE:	1329	PROTOTYPE:
1158	CODE:	1330	CODE:
1159	RETVAL = coro_nready;	1331	RETVAL = coro_nready;
1160	OUTPUT:	1332	OUTPUT:
1161	RETVAL	1333	RETVAL
1162		1334
1163	void	1335	MODULE = Coro::State PACKAGE = Coro::AIO
1164	schedule (...)	1336
1165	PROTOTYPE:	1337	SV *
		1338	_get_state ()
1166	CODE:	1339	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	{	1340	{
1180	struct {	1341	struct io_state *data;
1181	int errorno;
1182	int laststype;
1183	int laststatval;
1184	Stat_t statcache;
1185	} data;
1186		1342
		1343	RETVAL = newSV (sizeof (struct io_state));
		1344	data = (struct io_state *)SvPVX (RETVAL);
		1345	SvCUR_set (RETVAL, sizeof (struct io_state));
		1346	SvPOK_only (RETVAL);
		1347
1187	data.errorno = errno;	1348	data->errorno = errno;
1188	data.laststype = PL_laststype;	1349	data->laststype = PL_laststype;
1189	data.laststatval = PL_laststatval;	1350	data->laststatval = PL_laststatval;
1190	data.statcache = PL_statcache;	1351	data->statcache = PL_statcache;
1191
1192	RETVAL = newSVpvn ((char *)&data, sizeof data);
1193	}	1352	}
1194	OUTPUT:	1353	OUTPUT:
1195	RETVAL	1354	RETVAL
1196		1355
1197	void	1356	void
1198	_aio_set_state (char *data_)	1357	_set_state (char *data_)
1199	PROTOTYPE: $	1358	PROTOTYPE: $
1200	CODE:	1359	CODE:
1201	{	1360	{
1202	struct {	1361	struct io_state data = (void )data_;
1203	int errorno;
1204	int laststype;
1205	int laststatval;
1206	Stat_t statcache;
1207	} data = (void )data_;
1208		1362
1209	errno = data->errorno;	1363	errno = data->errorno;
1210	PL_laststype = data->laststype;	1364	PL_laststype = data->laststype;
1211	PL_laststatval = data->laststatval;	1365	PL_laststatval = data->laststatval;
1212	PL_statcache = data->statcache;	1366	PL_statcache = data->statcache;
1213	}	1367	}
		1368

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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 1.136 by root, Fri Jan 12 01:05:55 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 1.136 by root, Fri Jan 12 01:05:55 2007 UTC