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

Comparing Coro/Coro/State.xs (file contents):
Revision 1.90 by root, Sat Nov 25 00:56:35 2006 UTC vs.
Revision 1.147 by root, Mon Mar 19 15:50:48 2007 UTC

…		…
		1	#include "libcoro/coro.c"
		2
1	#define PERL_NO_GET_CONTEXT	3	#define PERL_NO_GET_CONTEXT
2
3	#include "libcoro/coro.c"
4		4
5	#include "EXTERN.h"	5	#include "EXTERN.h"
6	#include "perl.h"	6	#include "perl.h"
7	#include "XSUB.h"	7	#include "XSUB.h"
8		8
9	#include "patchlevel.h"	9	#include "patchlevel.h"
10		10
11	#if PERL_VERSION < 6	11	#include <stdio.h>
		12	#include <errno.h>
		13	#include <assert.h>
		14
		15	#ifdef HAVE_MMAP
		16	# include <unistd.h>
		17	# include <sys/mman.h>
		18	# ifndef MAP_ANONYMOUS
		19	# ifdef MAP_ANON
		20	# define MAP_ANONYMOUS MAP_ANON
		21	# else
		22	# undef HAVE_MMAP
		23	# endif
		24	# endif
		25	# include <limits.h>
		26	# ifndef PAGESIZE
		27	# define PAGESIZE pagesize
		28	# define BOOT_PAGESIZE pagesize = sysconf (_SC_PAGESIZE)
		29	static long pagesize;
		30	# else
		31	# define BOOT_PAGESIZE (void)0
		32	# endif
		33	#else
		34	# define PAGESIZE 0
		35	# define BOOT_PAGESIZE (void)0
		36	#endif
		37
		38	#if CORO_USE_VALGRIND
		39	# include <valgrind/valgrind.h>
		40	# define REGISTER_STACK(cctx,start,end) (cctx)->valgrind_id = VALGRIND_STACK_REGISTER ((start), (end))
		41	#else
		42	# define REGISTER_STACK(cctx,start,end)
		43	#endif
		44
		45	/* the maximum number of idle cctx that will be pooled */
		46	#define MAX_IDLE_CCTX 8
		47
		48	#define PERL_VERSION_ATLEAST(a,b,c) \
		49	(PERL_REVISION > (a) \
		50	\|\| (PERL_REVISION == (a) \
		51	&& (PERL_VERSION > (b) \
		52	\|\| (PERL_VERSION == (b) && PERLSUBVERSION >= (c)))))
		53
		54	#if !PERL_VERSION_ATLEAST (5,6,0)
12	# ifndef PL_ppaddr	55	# ifndef PL_ppaddr
13	# define PL_ppaddr ppaddr	56	# define PL_ppaddr ppaddr
14	# endif	57	# endif
15	# ifndef call_sv	58	# ifndef call_sv
16	# define call_sv perl_call_sv	59	# define call_sv perl_call_sv
27	# ifndef IS_PADCONST	70	# ifndef IS_PADCONST
28	# define IS_PADCONST(v) 0	71	# define IS_PADCONST(v) 0
29	# endif	72	# endif
30	#endif	73	#endif
31		74
32	#include <errno.h>	75	/* 5.8.7 */
		76	#ifndef SvRV_set
		77	# define SvRV_set(s,v) SvRV(s) = (v)
		78	#endif
33		79
34	#if !__i386 && !__x86_64 && !__powerpc && !__m68k && !__alpha && !__mips && !__sparc64	80	#if !__i386 && !__x86_64 && !__powerpc && !__m68k && !__alpha && !__mips && !__sparc64
35	# undef STACKGUARD	81	# undef CORO_STACKGUARD
36	#endif
37
38	#ifndef STACKGUARD
39	# define STACKGUARD 0
40	#endif
41
42	#ifdef HAVE_MMAP
43	# include <unistd.h>
44	# include <sys/mman.h>
45	# ifndef MAP_ANONYMOUS
46	# ifdef MAP_ANON
47	# define MAP_ANONYMOUS MAP_ANON
48	# else
49	# undef HAVE_MMAP
50	# endif
51	# endif	82	#endif
52	# include <limits.h>	83
53	# ifndef PAGESIZE	84	#ifndef CORO_STACKGUARD
54	# define PAGESIZE pagesize	85	# define CORO_STACKGUARD 0
55	# define BOOT_PAGESIZE pagesize = sysconf (_SC_PAGESIZE)
56	static long pagesize;
57	# else
58	# define BOOT_PAGESIZE
59	# endif	86	#endif
60	#endif
61		87
62	#define SUB_INIT "Coro::State::initialize"	88	/* prefer perl internal functions over our own? */
		89	#ifndef CORO_PREFER_PERL_FUNCTIONS
		90	# define CORO_PREFER_PERL_FUNCTIONS 0
		91	#endif
63		92
64	/* The next macro should declare a variable stacklevel that contains and approximation	93	/* The next macro should declare a variable stacklevel that contains and approximation
65	* to the current C stack pointer. Its property is that it changes with each call	94	* to the current C stack pointer. Its property is that it changes with each call
66	* and should be unique. */	95	* and should be unique. */
		96	#define dSTACKLEVEL int stacklevel
67	#define dSTACKLEVEL void *stacklevel = &stacklevel	97	#define STACKLEVEL ((void *)&stacklevel)
68		98
69	#define IN_DESTRUCT (PL_main_cv == Nullcv)	99	#define IN_DESTRUCT (PL_main_cv == Nullcv)
70		100
71	#define labs(l) ((l) >= 0 ? (l) : -(l))	101	#if __GNUC__ >= 3
		102	# define attribute(x) __attribute__(x)
		103	# define BARRIER __asm__ __volatile__ ("" : : : "memory")
		104	#else
		105	# define attribute(x)
		106	# define BARRIER
		107	#endif
		108
		109	#define NOINLINE attribute ((noinline))
72		110
73	#include "CoroAPI.h"	111	#include "CoroAPI.h"
74		112
75	#ifdef USE_ITHREADS	113	#ifdef USE_ITHREADS
76	static perl_mutex coro_mutex;	114	static perl_mutex coro_mutex;
…		…
79	#else	117	#else
80	# define LOCK (void)0	118	# define LOCK (void)0
81	# define UNLOCK (void)0	119	# define UNLOCK (void)0
82	#endif	120	#endif
83		121
		122	/* helper storage struct for Coro::AIO */
		123	struct io_state
		124	{
		125	int errorno;
		126	I32 laststype;
		127	int laststatval;
		128	Stat_t statcache;
		129	};
		130
		131	static size_t coro_stacksize = CORO_STACKSIZE;
84	static struct CoroAPI coroapi;	132	static struct CoroAPI coroapi;
85	static AV main_mainstack; / used to differentiate between $main and others */	133	static AV main_mainstack; / used to differentiate between $main and others */
86	static HV coro_state_stash, coro_stash;	134	static HV coro_state_stash, coro_stash;
87	static SV coro_mortal; / will be freed after next transfer */	135	static SV coro_mortal; / will be freed after next transfer */
88		136
89	/* this is actually not just the c stack but also c registers etc... */	137	static struct coro_cctx *cctx_first;
		138	static int cctx_count, cctx_idle;
		139
		140	/* this is a structure representing a c-level coroutine */
90	typedef struct coro_stack {	141	typedef struct coro_cctx {
91	struct coro_stack *next;	142	struct coro_cctx *next;
92		143
93	void *idle_sp;	144	/* the stack */
94	void *sptr;	145	void *sptr;
95	long ssize; /* positive == mmap, otherwise malloc */	146	size_t ssize;
96		147
97	/* cpu state */	148	/* cpu state */
		149	void idle_sp; / sp of top-level transfer/schedule/cede call */
		150	JMPENV idle_te; / same as idle_sp, but for top_env, TODO: remove once stable */
		151	JMPENV *top_env;
98	coro_context cctx;	152	coro_context cctx;
99	} coro_stack;
100		153
101	static coro_stack *main_stack;	154	#if CORO_USE_VALGRIND
		155	int valgrind_id;
		156	#endif
		157	char inuse, mapped;
		158	} coro_cctx;
102		159
		160	enum {
		161	CF_RUNNING = 0x0001, /* coroutine is running */
		162	CF_READY = 0x0002, /* coroutine is ready */
		163	CF_NEW = 0x0004, /* has never been switched to */
		164	CF_DESTROYED = 0x0008, /* coroutine data has been freed */
		165	};
		166
		167	/* this is a structure representing a perl-level coroutine */
103	struct coro {	168	struct coro {
104	/* optionally saved, might be zero */	169	/* the c coroutine allocated to this perl coroutine, if any */
105	AV *defav;	170	coro_cctx *cctx;
106	SV *defsv;
107	SV *errsv;
108
109	/* saved global state not related to stacks */
110	U8 dowarn;
111	I32 in_eval;
112
113	/* the c stack, if any */
114	coro_stack *stack;
115
116	/* the stacks and related info (callchain etc..) */
117	PERL_SI *curstackinfo;
118	AV *curstack;
119	AV *mainstack;
120	SV **stack_sp;
121	OP *op;
122	SV **curpad;
123	AV *comppad;
124	CV *compcv;
125	SV **stack_base;
126	SV **stack_max;
127	SV **tmps_stack;
128	I32 tmps_floor;
129	I32 tmps_ix;
130	I32 tmps_max;
131	I32 *markstack;
132	I32 *markstack_ptr;
133	I32 *markstack_max;
134	I32 *scopestack;
135	I32 scopestack_ix;
136	I32 scopestack_max;
137	ANY *savestack;
138	I32 savestack_ix;
139	I32 savestack_max;
140	OP **retstack;
141	I32 retstack_ix;
142	I32 retstack_max;
143	PMOP *curpm;
144	COP *curcop;
145	JMPENV *top_env;
146
147	/* coro process data */
148	int prio;
149		171
150	/* data associated with this coroutine (initial args) */	172	/* data associated with this coroutine (initial args) */
151	AV *args;	173	AV *args;
152	int refcnt;	174	int refcnt;
		175	int save; /* CORO_SAVE flags */
		176	int flags; /* CF_ flags */
		177
		178	/* optionally saved, might be zero */
		179	AV defav; / @_ */
		180	SV defsv; / $_ */
		181	SV errsv; / $@ */
		182	GV deffh; / default filehandle */
		183	SV irssv; / $/ */
		184	SV irssv_sv; / real $/ cache */
		185
		186	#define VAR(name,type) type name;
		187	# include "state.h"
		188	#undef VAR
		189
		190	/* coro process data */
		191	int prio;
153	};	192	};
154		193
155	typedef struct coro *Coro__State;	194	typedef struct coro *Coro__State;
156	typedef struct coro *Coro__State_or_hashref;	195	typedef struct coro *Coro__State_or_hashref;
157		196
		197	/ Coro ******************************************************************/
		198
		199	#define PRIO_MAX 3
		200	#define PRIO_HIGH 1
		201	#define PRIO_NORMAL 0
		202	#define PRIO_LOW -1
		203	#define PRIO_IDLE -3
		204	#define PRIO_MIN -4
		205
		206	/* for Coro.pm */
		207	static SV *coro_current;
		208	static AV *coro_ready [PRIO_MAX-PRIO_MIN+1];
		209	static int coro_nready;
		210
		211	/ lowlevel stuff ********************************************************/
		212
158	static AV *	213	static AV *
159	coro_clone_padlist (pTHX_ CV *cv)	214	coro_clone_padlist (pTHX_ CV *cv)
160	{	215	{
161	AV *padlist = CvPADLIST (cv);	216	AV *padlist = CvPADLIST (cv);
162	AV newpadlist, newpad;	217	AV newpadlist, newpad;
163		218
164	newpadlist = newAV ();	219	newpadlist = newAV ();
165	AvREAL_off (newpadlist);	220	AvREAL_off (newpadlist);
166	#if PERL_VERSION < 9	221	#if PERL_VERSION_ATLEAST (5,9,0)
		222	Perl_pad_push (aTHX_ padlist, AvFILLp (padlist) + 1);
		223	#else
167	Perl_pad_push (aTHX_ padlist, AvFILLp (padlist) + 1, 1);	224	Perl_pad_push (aTHX_ padlist, AvFILLp (padlist) + 1, 1);
168	#else
169	Perl_pad_push (aTHX_ padlist, AvFILLp (padlist) + 1);
170	#endif	225	#endif
171	newpad = (AV *)AvARRAY (padlist)[AvFILLp (padlist)];	226	newpad = (AV *)AvARRAY (padlist)[AvFILLp (padlist)];
172	--AvFILLp (padlist);	227	--AvFILLp (padlist);
173		228
174	av_store (newpadlist, 0, SvREFCNT_inc (*av_fetch (padlist, 0, FALSE)));	229	av_store (newpadlist, 0, SvREFCNT_inc (*av_fetch (padlist, 0, FALSE)));
…		…
218		273
219	#define PERL_MAGIC_coro PERL_MAGIC_ext	274	#define PERL_MAGIC_coro PERL_MAGIC_ext
220		275
221	static MGVTBL vtbl_coro = {0, 0, 0, 0, coro_cv_free};	276	static MGVTBL vtbl_coro = {0, 0, 0, 0, coro_cv_free};
222		277
		278	#define CORO_MAGIC(cv) \
		279	SvMAGIC (cv) \
		280	? SvMAGIC (cv)->mg_type == PERL_MAGIC_coro \
		281	? SvMAGIC (cv) \
		282	: mg_find ((SV *)cv, PERL_MAGIC_coro) \
		283	: 0
		284
223	/* the next two functions merely cache the padlists */	285	/* the next two functions merely cache the padlists */
224	static void	286	static void
225	get_padlist (pTHX_ CV *cv)	287	get_padlist (pTHX_ CV *cv)
226	{	288	{
227	MAGIC mg = mg_find ((SV )cv, PERL_MAGIC_coro);	289	MAGIC *mg = CORO_MAGIC (cv);
		290	AV *av;
228		291
229	if (mg && AvFILLp ((AV *)mg->mg_obj) >= 0)	292	if (mg && AvFILLp ((av = (AV *)mg->mg_obj)) >= 0)
230	CvPADLIST (cv) = (AV )av_pop ((AV )mg->mg_obj);	293	CvPADLIST (cv) = (AV *)AvARRAY (av)[AvFILLp (av)--];
231	else	294	else
232	{	295	{
233	#if 0	296	#if CORO_PREFER_PERL_FUNCTIONS
234	/* this should work - but it doesn't :( */	297	/* this is probably cleaner, but also slower? */
235	CV *cp = Perl_cv_clone (aTHX_ cv);	298	CV *cp = Perl_cv_clone (cv);
236	CvPADLIST (cv) = CvPADLIST (cp);	299	CvPADLIST (cv) = CvPADLIST (cp);
237	CvPADLIST (cp) = 0;	300	CvPADLIST (cp) = 0;
238	SvREFCNT_dec (cp);	301	SvREFCNT_dec (cp);
239	#else	302	#else
240	CvPADLIST (cv) = coro_clone_padlist (aTHX_ cv);	303	CvPADLIST (cv) = coro_clone_padlist (aTHX_ cv);
…		…
243	}	306	}
244		307
245	static void	308	static void
246	put_padlist (pTHX_ CV *cv)	309	put_padlist (pTHX_ CV *cv)
247	{	310	{
248	MAGIC mg = mg_find ((SV )cv, PERL_MAGIC_coro);	311	MAGIC *mg = CORO_MAGIC (cv);
		312	AV *av;
249		313
250	if (!mg)	314	if (!mg)
251	{	315	{
252	sv_magic ((SV *)cv, 0, PERL_MAGIC_coro, 0, 0);	316	sv_magic ((SV *)cv, 0, PERL_MAGIC_coro, 0, 0);
253	mg = mg_find ((SV *)cv, PERL_MAGIC_coro);	317	mg = mg_find ((SV *)cv, PERL_MAGIC_coro);
254	mg->mg_virtual = &vtbl_coro;	318	mg->mg_virtual = &vtbl_coro;
255	mg->mg_obj = (SV *)newAV ();	319	mg->mg_obj = (SV *)newAV ();
256	}	320	}
257		321
258	av_push ((AV )mg->mg_obj, (SV )CvPADLIST (cv));	322	av = (AV *)mg->mg_obj;
		323
		324	if (AvFILLp (av) >= AvMAX (av))
		325	av_extend (av, AvMAX (av) + 1);
		326
		327	AvARRAY (av)[++AvFILLp (av)] = (SV *)CvPADLIST (cv);
259	}	328	}
		329
		330	/ load & save, init *****************************************************/
260		331
261	#define SB do {	332	#define SB do {
262	#define SE } while (0)	333	#define SE } while (0)
263		334
264	#define LOAD(state) load_state(aTHX_ (state));
265	#define SAVE(state,flags) save_state(aTHX_ (state),(flags));
266
267	#define REPLACE_SV(sv,val) SB SvREFCNT_dec(sv); (sv) = (val); (val) = 0; SE	335	#define REPLACE_SV(sv,val) SB SvREFCNT_dec (sv); (sv) = (val); (val) = 0; SE
268		336
269	static void	337	static void
270	load_state(pTHX_ Coro__State c)	338	load_perl (pTHX_ Coro__State c)
271	{	339	{
272	PL_dowarn = c->dowarn;	340	#define VAR(name,type) PL_ ## name = c->name;
273	PL_in_eval = c->in_eval;	341	# include "state.h"
274		342	#undef VAR
275	PL_curstackinfo = c->curstackinfo;
276	PL_curstack = c->curstack;
277	PL_mainstack = c->mainstack;
278	PL_stack_sp = c->stack_sp;
279	PL_op = c->op;
280	PL_curpad = c->curpad;
281	PL_comppad = c->comppad;
282	PL_compcv = c->compcv;
283	PL_stack_base = c->stack_base;
284	PL_stack_max = c->stack_max;
285	PL_tmps_stack = c->tmps_stack;
286	PL_tmps_floor = c->tmps_floor;
287	PL_tmps_ix = c->tmps_ix;
288	PL_tmps_max = c->tmps_max;
289	PL_markstack = c->markstack;
290	PL_markstack_ptr = c->markstack_ptr;
291	PL_markstack_max = c->markstack_max;
292	PL_scopestack = c->scopestack;
293	PL_scopestack_ix = c->scopestack_ix;
294	PL_scopestack_max = c->scopestack_max;
295	PL_savestack = c->savestack;
296	PL_savestack_ix = c->savestack_ix;
297	PL_savestack_max = c->savestack_max;
298	#if PERL_VERSION < 9
299	PL_retstack = c->retstack;
300	PL_retstack_ix = c->retstack_ix;
301	PL_retstack_max = c->retstack_max;
302	#endif
303	PL_curpm = c->curpm;
304	PL_curcop = c->curcop;
305	PL_top_env = c->top_env;
306		343
307	if (c->defav) REPLACE_SV (GvAV (PL_defgv), c->defav);	344	if (c->defav) REPLACE_SV (GvAV (PL_defgv), c->defav);
308	if (c->defsv) REPLACE_SV (DEFSV , c->defsv);	345	if (c->defsv) REPLACE_SV (DEFSV , c->defsv);
309	if (c->errsv) REPLACE_SV (ERRSV , c->errsv);	346	if (c->errsv) REPLACE_SV (ERRSV , c->errsv);
		347	if (c->deffh) REPLACE_SV (PL_defoutgv , c->deffh);
		348
		349	if (c->irssv)
		350	{
		351	if (c->irssv == PL_rs \|\| sv_eq (PL_rs, c->irssv))
		352	{
		353	SvREFCNT_dec (c->irssv);
		354	c->irssv = 0;
		355	}
		356	else
		357	{
		358	REPLACE_SV (PL_rs, c->irssv);
		359	if (!c->irssv_sv) c->irssv_sv = get_sv ("/", 0);
		360	sv_setsv (c->irssv_sv, PL_rs);
		361	}
		362	}
310		363
311	{	364	{
312	dSP;	365	dSP;
313	CV *cv;	366	CV *cv;
314		367
315	/* now do the ugly restore mess */	368	/* now do the ugly restore mess */
316	while ((cv = (CV *)POPs))	369	while ((cv = (CV *)POPs))
317	{	370	{
318	AV padlist = (AV )POPs;
319
320	if (padlist)
321	{
322	put_padlist (aTHX_ cv); /* mark this padlist as available */	371	put_padlist (aTHX_ cv); /* mark this padlist as available */
323	CvPADLIST(cv) = padlist;	372	CvDEPTH (cv) = PTR2IV (POPs);
324	}	373	CvPADLIST (cv) = (AV *)POPs;
325
326	++CvDEPTH(cv);
327	}	374	}
328		375
329	PUTBACK;	376	PUTBACK;
330	}	377	}
		378	assert (!PL_comppad \|\| AvARRAY (PL_comppad));//D
331	}	379	}
332		380
333	static void	381	static void
334	save_state(pTHX_ Coro__State c, int flags)	382	save_perl (pTHX_ Coro__State c)
335	{	383	{
		384	assert (!PL_comppad \|\| AvARRAY (PL_comppad));//D
336	{	385	{
337	dSP;	386	dSP;
338	I32 cxix = cxstack_ix;	387	I32 cxix = cxstack_ix;
339	PERL_CONTEXT *ccstk = cxstack;	388	PERL_CONTEXT *ccstk = cxstack;
340	PERL_SI *top_si = PL_curstackinfo;	389	PERL_SI *top_si = PL_curstackinfo;
…		…
342	/*	391	/*
343	* the worst thing you can imagine happens first - we have to save	392	* the worst thing you can imagine happens first - we have to save
344	* (and reinitialize) all cv's in the whole callchain :(	393	* (and reinitialize) all cv's in the whole callchain :(
345	*/	394	*/
346		395
		396	EXTEND (SP, 3 + 1);
347	PUSHs (Nullsv);	397	PUSHs (Nullsv);
348	/* this loop was inspired by pp_caller */	398	/* this loop was inspired by pp_caller */
349	for (;;)	399	for (;;)
350	{	400	{
351	while (cxix >= 0)	401	while (cxix >= 0)
352	{	402	{
353	PERL_CONTEXT *cx = &ccstk[cxix--];	403	PERL_CONTEXT *cx = &ccstk[cxix--];
354		404
355	if (CxTYPE(cx) == CXt_SUB)	405	if (CxTYPE (cx) == CXt_SUB)
356	{	406	{
357	CV *cv = cx->blk_sub.cv;	407	CV *cv = cx->blk_sub.cv;
		408
358	if (CvDEPTH(cv))	409	if (CvDEPTH (cv))
359	{	410	{
360	EXTEND (SP, CvDEPTH(cv)*2);	411	EXTEND (SP, 3);
361
362	while (--CvDEPTH(cv))
363	{
364	/* this tells the restore code to increment CvDEPTH */
365	PUSHs (Nullsv);
366	PUSHs ((SV *)cv);
367	}
368
369	PUSHs ((SV *)CvPADLIST(cv));	412	PUSHs ((SV *)CvPADLIST (cv));
		413	PUSHs (INT2PTR (SV *, CvDEPTH (cv)));
370	PUSHs ((SV *)cv);	414	PUSHs ((SV *)cv);
371		415
		416	CvDEPTH (cv) = 0;
372	get_padlist (aTHX_ cv);	417	get_padlist (aTHX_ cv);
373	}	418	}
374	}	419	}
375	#ifdef CXt_FORMAT
376	else if (CxTYPE(cx) == CXt_FORMAT)
377	{
378	/* I never used formats, so how should I know how these are implemented? */
379	/* my bold guess is as a simple, plain sub... */
380	croak ("CXt_FORMAT not yet handled. Don't switch coroutines from within formats");
381	}
382	#endif
383	}	420	}
384		421
385	if (top_si->si_type == PERLSI_MAIN)	422	if (top_si->si_type == PERLSI_MAIN)
386	break;	423	break;
387		424
…		…
391	}	428	}
392		429
393	PUTBACK;	430	PUTBACK;
394	}	431	}
395		432
396	c->defav = flags & TRANSFER_SAVE_DEFAV ? (AV *)SvREFCNT_inc (GvAV (PL_defgv)) : 0;	433	c->defav = c->save & CORO_SAVE_DEFAV ? (AV *)SvREFCNT_inc (GvAV (PL_defgv)) : 0;
397	c->defsv = flags & TRANSFER_SAVE_DEFSV ? SvREFCNT_inc (DEFSV) : 0;	434	c->defsv = c->save & CORO_SAVE_DEFSV ? SvREFCNT_inc (DEFSV) : 0;
398	c->errsv = flags & TRANSFER_SAVE_ERRSV ? SvREFCNT_inc (ERRSV) : 0;	435	c->errsv = c->save & CORO_SAVE_ERRSV ? SvREFCNT_inc (ERRSV) : 0;
		436	c->deffh = c->save & CORO_SAVE_DEFFH ? (GV *)SvREFCNT_inc (PL_defoutgv) : 0;
		437	c->irssv = c->save & CORO_SAVE_IRSSV ? SvREFCNT_inc (PL_rs) : 0;
399		438
400	c->dowarn = PL_dowarn;	439	#define VAR(name,type)c->name = PL_ ## name;
401	c->in_eval = PL_in_eval;	440	# include "state.h"
402		441	#undef VAR
403	c->curstackinfo = PL_curstackinfo;
404	c->curstack = PL_curstack;
405	c->mainstack = PL_mainstack;
406	c->stack_sp = PL_stack_sp;
407	c->op = PL_op;
408	c->curpad = PL_curpad;
409	c->comppad = PL_comppad;
410	c->compcv = PL_compcv;
411	c->stack_base = PL_stack_base;
412	c->stack_max = PL_stack_max;
413	c->tmps_stack = PL_tmps_stack;
414	c->tmps_floor = PL_tmps_floor;
415	c->tmps_ix = PL_tmps_ix;
416	c->tmps_max = PL_tmps_max;
417	c->markstack = PL_markstack;
418	c->markstack_ptr = PL_markstack_ptr;
419	c->markstack_max = PL_markstack_max;
420	c->scopestack = PL_scopestack;
421	c->scopestack_ix = PL_scopestack_ix;
422	c->scopestack_max = PL_scopestack_max;
423	c->savestack = PL_savestack;
424	c->savestack_ix = PL_savestack_ix;
425	c->savestack_max = PL_savestack_max;
426	#if PERL_VERSION < 9
427	c->retstack = PL_retstack;
428	c->retstack_ix = PL_retstack_ix;
429	c->retstack_max = PL_retstack_max;
430	#endif
431	c->curpm = PL_curpm;
432	c->curcop = PL_curcop;
433	c->top_env = PL_top_env;
434	}	442	}
435		443
436	/*	444	/*
437	* allocate various perl stacks. This is an exact copy	445	* allocate various perl stacks. This is an exact copy
438	* of perl.c:init_stacks, except that it uses less memory	446	* of perl.c:init_stacks, except that it uses less memory
439	* on the (sometimes correct) assumption that coroutines do	447	* on the (sometimes correct) assumption that coroutines do
440	* not usually need a lot of stackspace.	448	* not usually need a lot of stackspace.
441	*/	449	*/
		450	#if CORO_PREFER_PERL_FUNCTIONS
		451	# define coro_init_stacks init_stacks
		452	#else
442	static void	453	static void
443	coro_init_stacks (pTHX)	454	coro_init_stacks (pTHX)
444	{	455	{
445	LOCK;
446
447	PL_curstackinfo = new_stackinfo(96, 1024/sizeof(PERL_CONTEXT) - 1);	456	PL_curstackinfo = new_stackinfo(128, 1024/sizeof(PERL_CONTEXT));
448	PL_curstackinfo->si_type = PERLSI_MAIN;	457	PL_curstackinfo->si_type = PERLSI_MAIN;
449	PL_curstack = PL_curstackinfo->si_stack;	458	PL_curstack = PL_curstackinfo->si_stack;
450	PL_mainstack = PL_curstack; /* remember in case we switch stacks */	459	PL_mainstack = PL_curstack; /* remember in case we switch stacks */
451		460
452	PL_stack_base = AvARRAY(PL_curstack);	461	PL_stack_base = AvARRAY(PL_curstack);
453	PL_stack_sp = PL_stack_base;	462	PL_stack_sp = PL_stack_base;
454	PL_stack_max = PL_stack_base + AvMAX(PL_curstack);	463	PL_stack_max = PL_stack_base + AvMAX(PL_curstack);
455		464
456	New(50,PL_tmps_stack,96,SV*);	465	New(50,PL_tmps_stack,128,SV*);
457	PL_tmps_floor = -1;	466	PL_tmps_floor = -1;
458	PL_tmps_ix = -1;	467	PL_tmps_ix = -1;
459	PL_tmps_max = 96;	468	PL_tmps_max = 128;
460		469
461	New(54,PL_markstack,16,I32);	470	New(54,PL_markstack,32,I32);
462	PL_markstack_ptr = PL_markstack;	471	PL_markstack_ptr = PL_markstack;
463	PL_markstack_max = PL_markstack + 16;	472	PL_markstack_max = PL_markstack + 32;
464		473
465	#ifdef SET_MARK_OFFSET	474	#ifdef SET_MARK_OFFSET
466	SET_MARK_OFFSET;	475	SET_MARK_OFFSET;
467	#endif	476	#endif
468		477
469	New(54,PL_scopestack,16,I32);	478	New(54,PL_scopestack,32,I32);
470	PL_scopestack_ix = 0;	479	PL_scopestack_ix = 0;
471	PL_scopestack_max = 16;	480	PL_scopestack_max = 32;
472		481
473	New(54,PL_savestack,96,ANY);	482	New(54,PL_savestack,64,ANY);
474	PL_savestack_ix = 0;	483	PL_savestack_ix = 0;
475	PL_savestack_max = 96;	484	PL_savestack_max = 64;
476		485
477	#if PERL_VERSION < 9	486	#if !PERL_VERSION_ATLEAST (5,9,0)
478	New(54,PL_retstack,8,OP*);	487	New(54,PL_retstack,16,OP*);
479	PL_retstack_ix = 0;	488	PL_retstack_ix = 0;
480	PL_retstack_max = 8;	489	PL_retstack_max = 16;
481	#endif	490	#endif
482
483	UNLOCK;
484	}	491	}
		492	#endif
485		493
486	/*	494	/*
487	* destroy the stacks, the callchain etc...	495	* destroy the stacks, the callchain etc...
488	*/	496	*/
489	static void	497	static void
490	destroy_stacks(pTHX)	498	coro_destroy_stacks (pTHX)
491	{	499	{
492	if (!IN_DESTRUCT)	500	if (!IN_DESTRUCT)
493	{	501	{
494	/* is this ugly, I ask? */	502	/* restore all saved variables and stuff */
495	LEAVE_SCOPE (0);	503	LEAVE_SCOPE (0);
		504	assert (PL_tmps_floor == -1);
496		505
497	/* sure it is, but more important: is it correct?? :/ */	506	/* free all temporaries */
498	FREETMPS;	507	FREETMPS;
		508	assert (PL_tmps_ix == -1);
499		509
		510	/* unwind all extra stacks */
500	/POPSTACK_TO (PL_mainstack);//D//use/	511	POPSTACK_TO (PL_mainstack);
		512
		513	/* unwind main stack */
		514	dounwind (-1);
501	}	515	}
502		516
503	while (PL_curstackinfo->si_next)	517	while (PL_curstackinfo->si_next)
504	PL_curstackinfo = PL_curstackinfo->si_next;	518	PL_curstackinfo = PL_curstackinfo->si_next;
505		519
506	while (PL_curstackinfo)	520	while (PL_curstackinfo)
507	{	521	{
508	PERL_SI *p = PL_curstackinfo->si_prev;	522	PERL_SI *p = PL_curstackinfo->si_prev;
509		523
510	{ /D//remove/
511	dSP;
512	SWITCHSTACK (PL_curstack, PL_curstackinfo->si_stack);
513	PUTBACK; /* possibly superfluous */
514	}
515
516	if (!IN_DESTRUCT)	524	if (!IN_DESTRUCT)
517	{
518	dounwind (-1);/D//remove/
519	SvREFCNT_dec (PL_curstackinfo->si_stack);	525	SvREFCNT_dec (PL_curstackinfo->si_stack);
520	}
521		526
522	Safefree (PL_curstackinfo->si_cxstack);	527	Safefree (PL_curstackinfo->si_cxstack);
523	Safefree (PL_curstackinfo);	528	Safefree (PL_curstackinfo);
524	PL_curstackinfo = p;	529	PL_curstackinfo = p;
525	}	530	}
526		531
527	Safefree (PL_tmps_stack);	532	Safefree (PL_tmps_stack);
528	Safefree (PL_markstack);	533	Safefree (PL_markstack);
529	Safefree (PL_scopestack);	534	Safefree (PL_scopestack);
530	Safefree (PL_savestack);	535	Safefree (PL_savestack);
531	#if PERL_VERSION < 9	536	#if !PERL_VERSION_ATLEAST (5,9,0)
532	Safefree (PL_retstack);	537	Safefree (PL_retstack);
533	#endif	538	#endif
534	}	539	}
535		540
		541	/ coroutine stack handling **********************************************/
		542
536	static void	543	static void
537	setup_coro (struct coro *coro)	544	setup_coro (pTHX_ struct coro *coro)
538	{	545	{
539	/*	546	/*
540	* emulate part of the perl startup here.	547	* emulate part of the perl startup here.
541	*/	548	*/
542	dTHX;	549	coro_init_stacks (aTHX);
		550
		551	PL_curcop = &PL_compiling;
		552	PL_in_eval = EVAL_NULL;
		553	PL_comppad = 0;
		554	PL_curpm = 0;
		555	PL_localizing = 0;
		556	PL_dirty = 0;
		557	PL_restartop = 0;
		558
		559	{
		560	dSP;
		561	LOGOP myop;
		562
		563	SvREFCNT_dec (GvAV (PL_defgv));
		564	GvAV (PL_defgv) = coro->args; coro->args = 0;
		565
		566	Zero (&myop, 1, LOGOP);
		567	myop.op_next = Nullop;
		568	myop.op_flags = OPf_WANT_VOID;
		569
		570	PUSHMARK (SP);
		571	XPUSHs ((SV *)get_cv ("Coro::State::_coro_init", FALSE));
		572	PUTBACK;
		573	PL_op = (OP *)&myop;
		574	PL_op = PL_ppaddr[OP_ENTERSUB](aTHX);
		575	SPAGAIN;
		576	}
		577
		578	ENTER; /* necessary e.g. for dounwind */
		579	}
		580
		581	static void
		582	free_coro_mortal (pTHX)
		583	{
		584	if (coro_mortal)
		585	{
		586	SvREFCNT_dec (coro_mortal);
		587	coro_mortal = 0;
		588	}
		589	}
		590
		591	/* inject a fake call to Coro::State::_cctx_init into the execution */
		592	static void NOINLINE
		593	prepare_cctx (pTHX_ coro_cctx *cctx)
		594	{
543	dSP;	595	dSP;
544	UNOP myop;	596	LOGOP myop;
545	SV sub_init = (SV )get_cv (SUB_INIT, FALSE);
546		597
547	coro_init_stacks (aTHX);
548	/PL_curcop = 0;/
549	/PL_in_eval = PL_in_eval;/ /* inherit */
550	SvREFCNT_dec (GvAV (PL_defgv));
551	GvAV (PL_defgv) = coro->args; coro->args = 0;
552
553	SPAGAIN;
554
555	Zero (&myop, 1, UNOP);	598	Zero (&myop, 1, LOGOP);
556	myop.op_next = Nullop;	599	myop.op_next = PL_op;
557	myop.op_flags = OPf_WANT_VOID;	600	myop.op_flags = OPf_WANT_VOID \| OPf_STACKED;
558		601
		602	PUSHMARK (SP);
		603	EXTEND (SP, 2);
		604	PUSHs (sv_2mortal (newSViv (PTR2IV (cctx))));
		605	PUSHs ((SV *)get_cv ("Coro::State::_cctx_init", FALSE));
		606	PUTBACK;
559	PL_op = (OP *)&myop;	607	PL_op = (OP *)&myop;
560
561	PUSHMARK(SP);
562	XPUSHs (sub_init);
563	PUTBACK;
564	PL_op = PL_ppaddr[OP_ENTERSUB](aTHX);	608	PL_op = PL_ppaddr[OP_ENTERSUB](aTHX);
565	SPAGAIN;	609	SPAGAIN;
566
567	ENTER; /* necessary e.g. for dounwind */
568	}	610	}
569		611
570	static void	612	static void
571	transfer_tail ()	613	coro_run (void *arg)
572	{	614	{
573	if (coro_mortal)	615	dTHX;
574	{
575	SvREFCNT_dec (coro_mortal);
576	coro_mortal = 0;
577	}
578		616
		617	/* coro_run is the alternative tail of transfer(), so unlock here. */
579	UNLOCK;	618	UNLOCK;
580	}
581		619
582	static void
583	coro_run (void *arg)
584	{
585	/*	620	/*
586	* this is a _very_ stripped down perl interpreter ;)	621	* this is a _very_ stripped down perl interpreter ;)
587	*/	622	*/
588	dTHX;
589
590	transfer_tail ();
591
592	PL_top_env = &PL_start_env;	623	PL_top_env = &PL_start_env;
593	PL_restartop = PL_op->op_next;	624
		625	/* inject call to cctx_init */
		626	prepare_cctx (aTHX_ (coro_cctx *)arg);
		627
594	/* somebody will hit me for both perl_run and PL_restart_top */	628	/* somebody will hit me for both perl_run and PL_restartop */
595	perl_run (aTHX_ PERL_GET_CONTEXT);	629	PL_restartop = PL_op;
		630	perl_run (PL_curinterp);
596		631
		632	fputs ("FATAL: C coroutine fell over the edge of the world, aborting. Did you call exit in a coroutine?\n", stderr);
597	abort ();	633	abort ();
598	}	634	}
599		635
600	static coro_stack *	636	static coro_cctx *
601	stack_new ()	637	cctx_new ()
602	{	638	{
603	coro_stack *stack;	639	coro_cctx *cctx;
		640	void *stack_start;
		641	size_t stack_size;
604		642
		643	++cctx_count;
		644
605	New (0, stack, 1, coro_stack);	645	Newz (0, cctx, 1, coro_cctx);
606		646
607	#if HAVE_MMAP	647	#if HAVE_MMAP
608		648
609	stack->ssize = ((STACKSIZE * sizeof (long) + PAGESIZE - 1) / PAGESIZE + STACKGUARD) * PAGESIZE; /* mmap should do allocate-on-write for us */	649	cctx->ssize = ((coro_stacksize * sizeof (long) + PAGESIZE - 1) / PAGESIZE + CORO_STACKGUARD) * PAGESIZE;
		650	/* mmap supposedly does allocate-on-write for us */
610	stack->sptr = mmap (0, stack->ssize, PROT_EXEC\|PROT_READ\|PROT_WRITE, MAP_PRIVATE\|MAP_ANONYMOUS, 0, 0);	651	cctx->sptr = mmap (0, cctx->ssize, PROT_EXEC\|PROT_READ\|PROT_WRITE, MAP_PRIVATE\|MAP_ANONYMOUS, 0, 0);
611		652
612	if (stack->sptr == (void *)-1)	653	if (cctx->sptr != (void *)-1)
		654	{
		655	# if CORO_STACKGUARD
		656	mprotect (cctx->sptr, CORO_STACKGUARD * PAGESIZE, PROT_NONE);
		657	# endif
		658	stack_start = CORO_STACKGUARD * PAGESIZE + (char *)cctx->sptr;
		659	stack_size = cctx->ssize - CORO_STACKGUARD * PAGESIZE;
		660	cctx->mapped = 1;
613	{	661	}
		662	else
		663	#endif
		664	{
		665	cctx->ssize = coro_stacksize * (long)sizeof (long);
		666	New (0, cctx->sptr, coro_stacksize, long);
		667
		668	if (!cctx->sptr)
		669	{
614	fprintf (stderr, "FATAL: unable to mmap stack for coroutine\n");	670	perror ("FATAL: unable to allocate stack for coroutine");
615	_exit (EXIT_FAILURE);	671	_exit (EXIT_FAILURE);
616	}	672	}
617		673
618	mprotect (stack->sptr, STACKGUARD * PAGESIZE, PROT_NONE);	674	stack_start = cctx->sptr;
619		675	stack_size = cctx->ssize;
620	#else
621
622	stack->ssize = STACKSIZE * (long)sizeof (long);
623	New (0, stack->sptr, STACKSIZE, long);
624
625	if (!stack->sptr)
626	{	676	}
627	fprintf (stderr, "FATAL: unable to malloc stack for coroutine\n");
628	_exit (EXIT_FAILURE);
629	}
630		677
631	#endif	678	REGISTER_STACK (cctx, (char )stack_start, (char )stack_start + stack_size);
632
633	coro_create (&stack->cctx, coro_run, 0, stack->sptr, stack->ssize);	679	coro_create (&cctx->cctx, coro_run, (void *)cctx, stack_start, stack_size);
634		680
635	return stack;	681	return cctx;
636	}	682	}
637		683
638	static void	684	static void
639	stack_free (coro_stack *stack)	685	cctx_destroy (coro_cctx *cctx)
640	{	686	{
641	if (!stack \|\| stack == main_stack)	687	if (!cctx)
642	return;	688	return;
643		689
		690	--cctx_count;
		691
		692	#if CORO_USE_VALGRIND
		693	VALGRIND_STACK_DEREGISTER (cctx->valgrind_id);
		694	#endif
		695
644	#if HAVE_MMAP	696	#if HAVE_MMAP
		697	if (cctx->mapped)
645	munmap (stack->sptr, stack->ssize);	698	munmap (cctx->sptr, cctx->ssize);
646	#else
647	Safefree (stack->sptr);
648	#endif
649
650	Safefree (stack);
651	}
652
653	static coro_stack *stack_first;
654
655	static void
656	stack_get (struct coro *coro)
657	{
658	if (stack_first)
659	{
660	coro->stack = stack_first;
661	stack_first = stack_first->next;
662	}
663	else	699	else
664	coro->stack = stack_new ();	700	#endif
665	}	701	Safefree (cctx->sptr);
666		702
667	static void	703	Safefree (cctx);
668	stack_put (coro_stack *stack)
669	{
670	stack->next = stack_first;
671	stack_first = stack;
672	}	704	}
		705
		706	static coro_cctx *
		707	cctx_get (pTHX)
		708	{
		709	while (cctx_first)
		710	{
		711	coro_cctx *cctx = cctx_first;
		712	cctx_first = cctx->next;
		713	--cctx_idle;
		714
		715	if (cctx->ssize >= coro_stacksize)
		716	return cctx;
		717
		718	cctx_destroy (cctx);
		719	}
		720
		721	PL_op = PL_op->op_next;
		722	return cctx_new ();
		723	}
		724
		725	static void
		726	cctx_put (coro_cctx *cctx)
		727	{
		728	/* free another cctx if overlimit */
		729	if (cctx_idle >= MAX_IDLE_CCTX)
		730	{
		731	coro_cctx *first = cctx_first;
		732	cctx_first = first->next;
		733	--cctx_idle;
		734
		735	assert (!first->inuse);
		736	cctx_destroy (first);
		737	}
		738
		739	++cctx_idle;
		740	cctx->next = cctx_first;
		741	cctx_first = cctx;
		742	}
		743
		744	/ coroutine switching ***************************************************/
673		745
674	/* never call directly, always through the coro_state_transfer global variable */	746	/* never call directly, always through the coro_state_transfer global variable */
675	static void	747	static void NOINLINE
676	transfer_impl (pTHX_ struct coro prev, struct coro next, int flags)	748	transfer (pTHX_ struct coro prev, struct coro next)
677	{	749	{
678	dSTACKLEVEL;	750	dSTACKLEVEL;
679		751
680	/* sometimes transfer is only called to set idle_sp */	752	/* sometimes transfer is only called to set idle_sp */
681	if (!prev->stack->idle_sp)	753	if (!next)
682	prev->stack->idle_sp = stacklevel;	754	{
683		755	((coro_cctx *)prev)->idle_sp = STACKLEVEL;
684	LOCK;	756	assert (((coro_cctx )prev)->idle_te = PL_top_env); / just for the side-effect when asserts are enabled */
685		757	}
686	if (prev != next)	758	else if (prev != next)
687	{	759	{
688	coro_stack *prev_stack = prev->stack;	760	coro_cctx *prev__cctx;
689		761
690	/* possibly "free" the stack */	762	if (prev->flags & CF_NEW)
691	if (prev_stack->idle_sp == stacklevel)
692	{	763	{
693	stack_put (prev_stack);	764	/* create a new empty context */
694	prev->stack = 0;	765	Newz (0, prev->cctx, 1, coro_cctx);
		766	prev->cctx->inuse = 1;
		767	prev->flags &= ~CF_NEW;
		768	prev->flags \|= CF_RUNNING;
695	}	769	}
696		770
697	if (next->mainstack)	771	/TODO: must not croak here /
		772	if (!prev->flags & CF_RUNNING)
		773	croak ("Coro::State::transfer called with non-running prev Coro::State, but can only transfer from running states");
		774
		775	if (next->flags & CF_RUNNING)
		776	croak ("Coro::State::transfer called with running next Coro::State, but can only transfer to inactive states");
		777
		778	if (next->flags & CF_DESTROYED)
		779	croak ("Coro::State::transfer called with destroyed next Coro::State, but can only transfer to inactive states");
		780
		781	prev->flags &= ~CF_RUNNING;
		782	next->flags \|= CF_RUNNING;
		783
		784	LOCK;
		785
		786	if (next->flags & CF_NEW)
698	{	787	{
699	/* coroutine already started */	788	/* need to start coroutine */
700	SAVE (prev, flags);	789	next->flags &= ~CF_NEW;
701	LOAD (next);	790	/* first get rid of the old state */
		791	save_perl (aTHX_ prev);
		792	/* setup coroutine call */
		793	setup_coro (aTHX_ next);
		794	/* need a new stack */
		795	assert (!next->cctx);
702	}	796	}
703	else	797	else
704	{	798	{
705	/* need to start coroutine */	799	/* coroutine already started */
706	/* first get rid of the old state */	800	save_perl (aTHX_ prev);
707	SAVE (prev, -1);	801	load_perl (aTHX_ next);
708	/* setup coroutine call */
709	setup_coro (next);
710	/* need to change stack from main_stack to real one */
711	next->stack = 0;
712	}	802	}
713		803
		804	prev__cctx = prev->cctx;
		805
		806	/* possibly "free" the cctx */
		807	if (prev__cctx->idle_sp == STACKLEVEL)
		808	{
		809	/* I assume that STACKLEVEL is a stronger indicator than PL_top_env changes */
		810	assert (("ERROR: current top_env must equal previous top_env", PL_top_env == prev__cctx->idle_te));
		811
		812	prev->cctx = 0;
		813
		814	cctx_put (prev__cctx);
		815	prev__cctx->inuse = 0;
		816	}
		817
714	if (!next->stack)	818	if (!next->cctx)
715	stack_get (next);	819	{
		820	next->cctx = cctx_get (aTHX);
		821	assert (!next->cctx->inuse);
		822	next->cctx->inuse = 1;
		823	}
716		824
717	if (prev_stack != next->stack)	825	if (prev__cctx != next->cctx)
		826	{
		827	prev__cctx->top_env = PL_top_env;
		828	PL_top_env = next->cctx->top_env;
718	coro_transfer (&prev_stack->cctx, &next->stack->cctx);	829	coro_transfer (&prev__cctx->cctx, &next->cctx->cctx);
719	}	830	}
720		831
721	transfer_tail ();	832	free_coro_mortal (aTHX);
		833	UNLOCK;
		834	}
722	}	835	}
723		836
724	/* use this function pointer to call the above function */	837	struct transfer_args
725	/* this is done to increase chances of the compiler not inlining the call */	838	{
726	void (coro_state_transfer)(pTHX_ struct coro prev, struct coro *next, int flags) = transfer_impl;	839	struct coro prev, next;
		840	};
727		841
		842	#define TRANSFER(ta) transfer (aTHX_ (ta).prev, (ta).next)
		843
		844	/ high level stuff ******************************************************/
		845
728	static void	846	static int
729	coro_state_destroy (struct coro *coro)	847	coro_state_destroy (pTHX_ struct coro *coro)
730	{	848	{
731	if (coro->refcnt--)	849	if (coro->flags & CF_DESTROYED)
732	return;	850	return 0;
		851
		852	coro->flags \|= CF_DESTROYED;
		853
		854	if (coro->flags & CF_READY)
		855	{
		856	/* reduce nready, as destroying a ready coro effectively unreadies it */
		857	/* alternative: look through all ready queues and remove the coro */
		858	LOCK;
		859	--coro_nready;
		860	UNLOCK;
		861	}
		862	else
		863	coro->flags \|= CF_READY; /* make sure it is NOT put into the readyqueue */
733		864
734	if (coro->mainstack && coro->mainstack != main_mainstack)	865	if (coro->mainstack && coro->mainstack != main_mainstack)
735	{	866	{
736	struct coro temp;	867	struct coro temp;
737		868
738	SAVE (aTHX_ (&temp), TRANSFER_SAVE_ALL);	869	assert (!(coro->flags & CF_RUNNING));
		870
		871	Zero (&temp, 1, struct coro);
		872	temp.save = CORO_SAVE_DEF;
		873
		874	if (coro->flags & CF_RUNNING)
		875	croak ("FATAL: tried to destroy currently running coroutine");
		876
		877	save_perl (aTHX_ &temp);
739	LOAD (aTHX_ coro);	878	load_perl (aTHX_ coro);
740		879
741	destroy_stacks (aTHX);	880	coro_destroy_stacks (aTHX);
742		881
743	LOAD ((&temp)); /* this will get rid of defsv etc.. */	882	load_perl (aTHX_ &temp); /* this will get rid of defsv etc.. */
744		883
745	coro->mainstack = 0;	884	coro->mainstack = 0;
746	}	885	}
747		886
748	stack_free (coro->stack);	887	cctx_destroy (coro->cctx);
749	SvREFCNT_dec (coro->args);	888	SvREFCNT_dec (coro->args);
750	Safefree (coro);	889
		890	return 1;
751	}	891	}
752		892
753	static int	893	static int
754	coro_state_clear (SV sv, MAGIC mg)	894	coro_state_free (pTHX_ SV sv, MAGIC mg)
755	{	895	{
756	struct coro coro = (struct coro )mg->mg_ptr;	896	struct coro coro = (struct coro )mg->mg_ptr;
757	mg->mg_ptr = 0;	897	mg->mg_ptr = 0;
758		898
		899	if (--coro->refcnt < 0)
		900	{
759	coro_state_destroy (coro);	901	coro_state_destroy (aTHX_ coro);
		902	Safefree (coro);
		903	}
760		904
761	return 0;	905	return 0;
762	}	906	}
763		907
764	static int	908	static int
765	coro_state_dup (MAGIC mg, CLONE_PARAMS params)	909	coro_state_dup (pTHX_ MAGIC mg, CLONE_PARAMS params)
766	{	910	{
767	struct coro coro = (struct coro )mg->mg_ptr;	911	struct coro coro = (struct coro )mg->mg_ptr;
768		912
769	++coro->refcnt;	913	++coro->refcnt;
770		914
771	return 0;	915	return 0;
772	}	916	}
773		917
774	static MGVTBL coro_state_vtbl = { 0, 0, 0, 0, coro_state_clear, 0, coro_state_dup, 0 };	918	static MGVTBL coro_state_vtbl = {
		919	0, 0, 0, 0,
		920	coro_state_free,
		921	0,
		922	#ifdef MGf_DUP
		923	coro_state_dup,
		924	#else
		925	# define MGf_DUP 0
		926	#endif
		927	};
775		928
776	static struct coro *	929	static struct coro *
777	SvSTATE (SV *coro)	930	SvSTATE_ (pTHX_ SV *coro)
778	{	931	{
779	HV *stash;	932	HV *stash;
780	MAGIC *mg;	933	MAGIC *mg;
781		934
782	if (SvROK (coro))	935	if (SvROK (coro))
…		…
788	/* very slow, but rare, check */	941	/* very slow, but rare, check */
789	if (!sv_derived_from (sv_2mortal (newRV_inc (coro)), "Coro::State"))	942	if (!sv_derived_from (sv_2mortal (newRV_inc (coro)), "Coro::State"))
790	croak ("Coro::State object required");	943	croak ("Coro::State object required");
791	}	944	}
792		945
793	mg = SvMAGIC (coro);	946	mg = CORO_MAGIC (coro);
794	assert (mg->mg_type == PERL_MAGIC_ext);
795	return (struct coro *)mg->mg_ptr;	947	return (struct coro *)mg->mg_ptr;
796	}	948	}
797		949
		950	#define SvSTATE(sv) SvSTATE_ (aTHX_ (sv))
		951
798	static void	952	static void
		953	prepare_transfer (pTHX_ struct transfer_args ta, SV prev_sv, SV *next_sv)
		954	{
		955	ta->prev = SvSTATE (prev_sv);
		956	ta->next = SvSTATE (next_sv);
		957	}
		958
		959	static void
799	api_transfer (pTHX_ SV prev, SV next, int flags)	960	api_transfer (SV prev_sv, SV next_sv)
800	{	961	{
801	coro_state_transfer (aTHX_ SvSTATE (prev), SvSTATE (next), flags);	962	dTHX;
		963	struct transfer_args ta;
		964
		965	prepare_transfer (aTHX_ &ta, prev_sv, next_sv);
		966	TRANSFER (ta);
		967	}
		968
		969	static int
		970	api_save (SV *coro_sv, int new_save)
		971	{
		972	dTHX;
		973	struct coro *coro = SvSTATE (coro_sv);
		974	int old_save = coro->save;
		975
		976	if (new_save >= 0)
		977	coro->save = new_save;
		978
		979	return old_save;
802	}	980	}
803		981
804	/ Coro ******************************************************************/	982	/ Coro ******************************************************************/
805		983
806	#define PRIO_MAX 3
807	#define PRIO_HIGH 1
808	#define PRIO_NORMAL 0
809	#define PRIO_LOW -1
810	#define PRIO_IDLE -3
811	#define PRIO_MIN -4
812
813	/* for Coro.pm */
814	static GV coro_current, coro_idle;
815	static AV *coro_ready [PRIO_MAX-PRIO_MIN+1];
816	static int coro_nready;
817
818	static void	984	static void
819	coro_enq (pTHX_ SV *sv)	985	coro_enq (pTHX_ SV *coro_sv)
820	{	986	{
821	int prio;
822
823	if (SvTYPE (sv) != SVt_PVHV)
824	croak ("Coro::ready tried to enqueue something that is not a coroutine");
825
826	prio = SvSTATE (sv)->prio;
827
828	av_push (coro_ready [prio - PRIO_MIN], sv);	987	av_push (coro_ready [SvSTATE (coro_sv)->prio - PRIO_MIN], coro_sv);
829	coro_nready++;
830	}	988	}
831		989
832	static SV *	990	static SV *
833	coro_deq (pTHX_ int min_prio)	991	coro_deq (pTHX_ int min_prio)
834	{	992	{
…		…
838	if (min_prio < 0)	996	if (min_prio < 0)
839	min_prio = 0;	997	min_prio = 0;
840		998
841	for (prio = PRIO_MAX - PRIO_MIN + 1; --prio >= min_prio; )	999	for (prio = PRIO_MAX - PRIO_MIN + 1; --prio >= min_prio; )
842	if (AvFILLp (coro_ready [prio]) >= 0)	1000	if (AvFILLp (coro_ready [prio]) >= 0)
843	{
844	coro_nready--;
845	return av_shift (coro_ready [prio]);	1001	return av_shift (coro_ready [prio]);
846	}
847		1002
848	return 0;	1003	return 0;
849	}	1004	}
850		1005
851	static void	1006	static int
852	api_ready (SV *coro)	1007	api_ready (SV *coro_sv)
853	{	1008	{
854	dTHX;	1009	dTHX;
		1010	struct coro *coro;
855		1011
856	if (SvROK (coro))	1012	if (SvROK (coro_sv))
857	coro = SvRV (coro);	1013	coro_sv = SvRV (coro_sv);
		1014
		1015	coro = SvSTATE (coro_sv);
		1016
		1017	if (coro->flags & CF_READY)
		1018	return 0;
		1019
		1020	coro->flags \|= CF_READY;
858		1021
859	LOCK;	1022	LOCK;
860	coro_enq (aTHX_ SvREFCNT_inc (coro));	1023	coro_enq (aTHX_ SvREFCNT_inc (coro_sv));
		1024	++coro_nready;
861	UNLOCK;	1025	UNLOCK;
		1026
		1027	return 1;
		1028	}
		1029
		1030	static int
		1031	api_is_ready (SV *coro_sv)
		1032	{
		1033	dTHX;
		1034	return !!(SvSTATE (coro_sv)->flags & CF_READY);
		1035	}
		1036
		1037	static void
		1038	prepare_schedule (pTHX_ struct transfer_args *ta)
		1039	{
		1040	SV prev_sv, next_sv;
		1041
		1042	for (;;)
		1043	{
		1044	LOCK;
		1045	next_sv = coro_deq (aTHX_ PRIO_MIN);
		1046
		1047	/* nothing to schedule: call the idle handler */
		1048	if (!next_sv)
		1049	{
		1050	dSP;
		1051	UNLOCK;
		1052
		1053	ENTER;
		1054	SAVETMPS;
		1055
		1056	PUSHMARK (SP);
		1057	PUTBACK;
		1058	call_sv (get_sv ("Coro::idle", FALSE), G_DISCARD);
		1059
		1060	FREETMPS;
		1061	LEAVE;
		1062	continue;
		1063	}
		1064
		1065	ta->next = SvSTATE (next_sv);
		1066
		1067	/* cannot transfer to destroyed coros, skip and look for next */
		1068	if (ta->next->flags & CF_DESTROYED)
		1069	{
		1070	UNLOCK;
		1071	SvREFCNT_dec (next_sv);
		1072	/* coro_nready is already taken care of by destroy */
		1073	continue;
		1074	}
		1075
		1076	--coro_nready;
		1077	UNLOCK;
		1078	break;
		1079	}
		1080
		1081	/* free this only after the transfer */
		1082	prev_sv = SvRV (coro_current);
		1083	SvRV_set (coro_current, next_sv);
		1084	ta->prev = SvSTATE (prev_sv);
		1085
		1086	assert (ta->next->flags & CF_READY);
		1087	ta->next->flags &= ~CF_READY;
		1088
		1089	LOCK;
		1090	free_coro_mortal (aTHX);
		1091	coro_mortal = prev_sv;
		1092	UNLOCK;
		1093	}
		1094
		1095	static void
		1096	prepare_cede (pTHX_ struct transfer_args *ta)
		1097	{
		1098	api_ready (coro_current);
		1099	prepare_schedule (aTHX_ ta);
		1100	}
		1101
		1102	static int
		1103	prepare_cede_notself (pTHX_ struct transfer_args *ta)
		1104	{
		1105	if (coro_nready)
		1106	{
		1107	SV *prev = SvRV (coro_current);
		1108	prepare_schedule (aTHX_ ta);
		1109	api_ready (prev);
		1110	return 1;
		1111	}
		1112	else
		1113	return 0;
862	}	1114	}
863		1115
864	static void	1116	static void
865	api_schedule (void)	1117	api_schedule (void)
866	{	1118	{
867	dTHX;	1119	dTHX;
		1120	struct transfer_args ta;
868		1121
869	SV prev, next;	1122	prepare_schedule (aTHX_ &ta);
870	SV *current = GvSV (coro_current);	1123	TRANSFER (ta);
871
872	for (;;)
873	{
874	LOCK;
875
876	next = coro_deq (aTHX_ PRIO_MIN);
877
878	if (next)
879	break;
880
881	UNLOCK;
882
883	{
884	dSP;
885
886	ENTER;
887	SAVETMPS;
888
889	PUSHMARK (SP);
890	PUTBACK;
891	call_sv (GvSV (coro_idle), G_DISCARD);
892
893	FREETMPS;
894	LEAVE;
895	}
896	}
897
898	prev = SvRV (current);
899	SvRV (current) = next;
900
901	/* free this only after the transfer */
902	coro_mortal = prev;
903
904	UNLOCK;
905
906	coro_state_transfer (aTHX_ SvSTATE (prev), SvSTATE (next), TRANSFER_SAVE_ALL);
907	}	1124	}
908		1125
909	static int coro_cede_self;
910
911	static void	1126	static int
912	api_cede (void)	1127	api_cede (void)
913	{	1128	{
914	dTHX;	1129	dTHX;
915	SV *current = SvREFCNT_inc (SvRV (GvSV (coro_current)));	1130	struct transfer_args ta;
916		1131
917	LOCK;	1132	prepare_cede (aTHX_ &ta);
918		1133
919	if (coro_cede_self)	1134	if (ta.prev != ta.next)
920	{	1135	{
921	AV *runqueue = coro_ready [PRIO_MAX - PRIO_MIN];	1136	TRANSFER (ta);
922	av_unshift (runqueue, 1);	1137	return 1;
923	av_store (runqueue, 0, current);
924	coro_nready++;
925	coro_cede_self = 0;
926	}	1138	}
927	else	1139	else
928	coro_enq (aTHX_ current);	1140	return 0;
		1141	}
929		1142
930	UNLOCK;	1143	static int
		1144	api_cede_notself (void)
		1145	{
		1146	dTHX;
		1147	struct transfer_args ta;
931		1148
932	api_schedule ();	1149	if (prepare_cede_notself (aTHX_ &ta))
		1150	{
		1151	TRANSFER (ta);
		1152	return 1;
		1153	}
		1154	else
		1155	return 0;
933	}	1156	}
934		1157
935	MODULE = Coro::State PACKAGE = Coro::State	1158	MODULE = Coro::State PACKAGE = Coro::State
936		1159
937	PROTOTYPES: DISABLE	1160	PROTOTYPES: DISABLE
…		…
943	#endif	1166	#endif
944	BOOT_PAGESIZE;	1167	BOOT_PAGESIZE;
945		1168
946	coro_state_stash = gv_stashpv ("Coro::State", TRUE);	1169	coro_state_stash = gv_stashpv ("Coro::State", TRUE);
947		1170
948	newCONSTSUB (coro_state_stash, "SAVE_DEFAV", newSViv (TRANSFER_SAVE_DEFAV));	1171	newCONSTSUB (coro_state_stash, "SAVE_DEFAV", newSViv (CORO_SAVE_DEFAV));
949	newCONSTSUB (coro_state_stash, "SAVE_DEFSV", newSViv (TRANSFER_SAVE_DEFSV));	1172	newCONSTSUB (coro_state_stash, "SAVE_DEFSV", newSViv (CORO_SAVE_DEFSV));
950	newCONSTSUB (coro_state_stash, "SAVE_ERRSV", newSViv (TRANSFER_SAVE_ERRSV));	1173	newCONSTSUB (coro_state_stash, "SAVE_ERRSV", newSViv (CORO_SAVE_ERRSV));
		1174	newCONSTSUB (coro_state_stash, "SAVE_IRSSV", newSViv (CORO_SAVE_IRSSV));
		1175	newCONSTSUB (coro_state_stash, "SAVE_DEFFH", newSViv (CORO_SAVE_DEFFH));
		1176	newCONSTSUB (coro_state_stash, "SAVE_DEF", newSViv (CORO_SAVE_DEF));
		1177	newCONSTSUB (coro_state_stash, "SAVE_ALL", newSViv (CORO_SAVE_ALL));
951		1178
952	main_mainstack = PL_mainstack;	1179	main_mainstack = PL_mainstack;
953		1180
954	coroapi.ver = CORO_API_VERSION;	1181	coroapi.ver = CORO_API_VERSION;
955	coroapi.transfer = api_transfer;	1182	coroapi.transfer = api_transfer;
956
957	Newz (0, main_stack, 1, coro_stack);
958	main_stack->idle_sp = (void *)-1;
959		1183
960	assert (("PRIO_NORMAL must be 0", !PRIO_NORMAL));	1184	assert (("PRIO_NORMAL must be 0", !PRIO_NORMAL));
961	}	1185	}
962		1186
963	SV *	1187	SV *
…		…
968	HV *hv;	1192	HV *hv;
969	int i;	1193	int i;
970		1194
971	Newz (0, coro, 1, struct coro);	1195	Newz (0, coro, 1, struct coro);
972	coro->args = newAV ();	1196	coro->args = newAV ();
		1197	coro->save = CORO_SAVE_DEF;
		1198	coro->flags = CF_NEW;
973		1199
974	hv = newHV ();	1200	hv = newHV ();
975	sv_magicext ((SV )hv, 0, PERL_MAGIC_ext, &coro_state_vtbl, (char )coro, 0)->mg_flags \|= MGf_DUP;	1201	sv_magicext ((SV )hv, 0, PERL_MAGIC_ext, &coro_state_vtbl, (char )coro, 0)->mg_flags \|= MGf_DUP;
976	RETVAL = sv_bless (newRV_noinc ((SV *)hv), gv_stashpv (klass, 1));	1202	RETVAL = sv_bless (newRV_noinc ((SV *)hv), gv_stashpv (klass, 1));
977		1203
978	av_push (coro->args, newSVsv (RETVAL));
979	for (i = 1; i < items; i++)	1204	for (i = 1; i < items; i++)
980	av_push (coro->args, newSVsv (ST (i)));	1205	av_push (coro->args, newSVsv (ST (i)));
981
982	coro->stack = main_stack;
983	/coro->mainstack = 0; //actual work is done inside transfer /
984	/coro->stack = 0;/
985	}	1206	}
986	OUTPUT:	1207	OUTPUT:
987	RETVAL	1208	RETVAL
988		1209
		1210	int
		1211	save (SV *coro, int new_save = -1)
		1212	CODE:
		1213	RETVAL = api_save (coro, new_save);
		1214	OUTPUT:
		1215	RETVAL
		1216
		1217	int
		1218	save_also (SV *coro_sv, int save_also)
		1219	CODE:
		1220	{
		1221	struct coro *coro = SvSTATE (coro_sv);
		1222	RETVAL = coro->save;
		1223	coro->save \|= save_also;
		1224	}
		1225	OUTPUT:
		1226	RETVAL
		1227
989	void	1228	void
990	transfer (prev, next, flags)	1229	_set_stacklevel (...)
991	SV *prev	1230	ALIAS:
992	SV *next	1231	Coro::State::transfer = 1
993	int flags	1232	Coro::schedule = 2
		1233	Coro::cede = 3
		1234	Coro::cede_notself = 4
994	CODE:	1235	CODE:
995	PUTBACK;
996	coro_state_transfer (aTHX_ SvSTATE (prev), SvSTATE (next), flags);
997	SPAGAIN;
998
999	int
1000	prio (Coro::State coro, int newprio = 0)
1001	ALIAS:
1002	nice = 1
1003	CODE:
1004	{	1236	{
1005	RETVAL = coro->prio;	1237	struct transfer_args ta;
1006		1238
1007	if (items > 1)	1239	switch (ix)
1008	{	1240	{
		1241	case 0:
		1242	ta.prev = (struct coro )INT2PTR (coro_cctx , SvIV (ST (0)));
		1243	ta.next = 0;
		1244	break;
		1245
		1246	case 1:
1009	if (ix)	1247	if (items != 2)
1010	newprio += coro->prio;	1248	croak ("Coro::State::transfer (prev,next) expects two arguments, not %d", items);
1011		1249
1012	if (newprio < PRIO_MIN) newprio = PRIO_MIN;	1250	prepare_transfer (aTHX_ &ta, ST (0), ST (1));
1013	if (newprio > PRIO_MAX) newprio = PRIO_MAX;	1251	break;
1014		1252
1015	coro->prio = newprio;	1253	case 2:
		1254	prepare_schedule (aTHX_ &ta);
		1255	break;
		1256
		1257	case 3:
		1258	prepare_cede (aTHX_ &ta);
		1259	break;
		1260
		1261	case 4:
		1262	if (!prepare_cede_notself (aTHX_ &ta))
		1263	XSRETURN_EMPTY;
		1264
		1265	break;
1016	}	1266	}
1017	}
1018		1267
1019	void	1268	BARRIER;
1020	_clear_idle_sp (Coro::State self)	1269	TRANSFER (ta);
		1270
		1271	if (GIMME_V != G_VOID && ta.next != ta.prev)
		1272	XSRETURN_YES;
		1273	}
		1274
		1275	bool
		1276	_destroy (SV *coro_sv)
1021	CODE:	1277	CODE:
1022	self->stack->idle_sp = 0;	1278	RETVAL = coro_state_destroy (aTHX_ SvSTATE (coro_sv));
1023		1279	OUTPUT:
1024	void	1280	RETVAL
1025	_clone_state_from (SV dst, SV src)
1026	CODE:
1027	{
1028	struct coro *coro_src = SvSTATE (src);
1029
1030	sv_unmagic (SvRV (dst), PERL_MAGIC_ext);
1031
1032	++coro_src->refcnt;
1033	sv_magicext (SvRV (dst), 0, PERL_MAGIC_ext, &coro_state_vtbl, (char *)coro_src, 0)->mg_flags \|= MGf_DUP;
1034	}
1035		1281
1036	void	1282	void
1037	_exit (code)	1283	_exit (code)
1038	int code	1284	int code
1039	PROTOTYPE: $	1285	PROTOTYPE: $
1040	CODE:	1286	CODE:
1041	_exit (code);	1287	_exit (code);
1042		1288
1043	MODULE = Coro::State PACKAGE = Coro::Cont	1289	int
		1290	cctx_stacksize (int new_stacksize = 0)
		1291	CODE:
		1292	RETVAL = coro_stacksize;
		1293	if (new_stacksize)
		1294	coro_stacksize = new_stacksize;
		1295	OUTPUT:
		1296	RETVAL
1044		1297
1045	void	1298	int
1046	yield (...)	1299	cctx_count ()
1047	PROTOTYPE: @	1300	CODE:
1048	CODE:	1301	RETVAL = cctx_count;
1049	{	1302	OUTPUT:
1050	SV *yieldstack;	1303	RETVAL
1051	SV *sv;
1052	AV *defav = GvAV (PL_defgv);
1053	struct coro prev, next;
1054		1304
1055	yieldstack = *hv_fetch (	1305	int
1056	(HV *)SvRV (GvSV (coro_current)),	1306	cctx_idle ()
1057	"yieldstack", sizeof ("yieldstack") - 1,	1307	CODE:
1058	0	1308	RETVAL = cctx_idle;
1059	);	1309	OUTPUT:
1060		1310	RETVAL
1061	/* set up @_ -- ugly */
1062	av_clear (defav);
1063	av_fill (defav, items - 1);
1064	while (items--)
1065	av_store (defav, items, SvREFCNT_inc (ST(items)));
1066
1067	sv = av_pop ((AV *)SvRV (yieldstack));
1068	prev = SvSTATE (av_fetch ((AV )SvRV (sv), 0, 0));
1069	next = SvSTATE (av_fetch ((AV )SvRV (sv), 1, 0));
1070	SvREFCNT_dec (sv);
1071
1072	coro_state_transfer (aTHX_ prev, next, 0);
1073	}
1074		1311
1075	MODULE = Coro::State PACKAGE = Coro	1312	MODULE = Coro::State PACKAGE = Coro
1076		1313
1077	BOOT:	1314	BOOT:
1078	{	1315	{
…		…
1085	newCONSTSUB (coro_stash, "PRIO_NORMAL", newSViv (PRIO_NORMAL));	1322	newCONSTSUB (coro_stash, "PRIO_NORMAL", newSViv (PRIO_NORMAL));
1086	newCONSTSUB (coro_stash, "PRIO_LOW", newSViv (PRIO_LOW));	1323	newCONSTSUB (coro_stash, "PRIO_LOW", newSViv (PRIO_LOW));
1087	newCONSTSUB (coro_stash, "PRIO_IDLE", newSViv (PRIO_IDLE));	1324	newCONSTSUB (coro_stash, "PRIO_IDLE", newSViv (PRIO_IDLE));
1088	newCONSTSUB (coro_stash, "PRIO_MIN", newSViv (PRIO_MIN));	1325	newCONSTSUB (coro_stash, "PRIO_MIN", newSViv (PRIO_MIN));
1089		1326
1090	coro_current = gv_fetchpv ("Coro::current", TRUE, SVt_PV);	1327	coro_current = get_sv ("Coro::current", FALSE);
1091	coro_idle = gv_fetchpv ("Coro::idle" , TRUE, SVt_PV);	1328	SvREADONLY_on (coro_current);
1092		1329
1093	for (i = PRIO_MAX - PRIO_MIN + 1; i--; )	1330	for (i = PRIO_MAX - PRIO_MIN + 1; i--; )
1094	coro_ready[i] = newAV ();	1331	coro_ready[i] = newAV ();
1095		1332
1096	{	1333	{
1097	SV *sv = perl_get_sv("Coro::API", 1);	1334	SV *sv = perl_get_sv("Coro::API", 1);
1098		1335
1099	coroapi.schedule = api_schedule;	1336	coroapi.schedule = api_schedule;
		1337	coroapi.save = api_save;
1100	coroapi.cede = api_cede;	1338	coroapi.cede = api_cede;
		1339	coroapi.cede_notself = api_cede_notself;
1101	coroapi.ready = api_ready;	1340	coroapi.ready = api_ready;
		1341	coroapi.is_ready = api_is_ready;
1102	coroapi.nready = &coro_nready;	1342	coroapi.nready = &coro_nready;
1103	coroapi.current = coro_current;	1343	coroapi.current = coro_current;
1104		1344
1105	GCoroAPI = &coroapi;	1345	GCoroAPI = &coroapi;
1106	sv_setiv (sv, (IV)&coroapi);	1346	sv_setiv (sv, (IV)&coroapi);
1107	SvREADONLY_on (sv);	1347	SvREADONLY_on (sv);
1108	}	1348	}
1109	}	1349	}
1110		1350
1111	void	1351	void
		1352	_set_current (SV *current)
		1353	PROTOTYPE: $
		1354	CODE:
		1355	SvREFCNT_dec (SvRV (coro_current));
		1356	SvRV_set (coro_current, SvREFCNT_inc (SvRV (current)));
		1357
		1358	int
		1359	prio (Coro::State coro, int newprio = 0)
		1360	ALIAS:
		1361	nice = 1
		1362	CODE:
		1363	{
		1364	RETVAL = coro->prio;
		1365
		1366	if (items > 1)
		1367	{
		1368	if (ix)
		1369	newprio = coro->prio - newprio;
		1370
		1371	if (newprio < PRIO_MIN) newprio = PRIO_MIN;
		1372	if (newprio > PRIO_MAX) newprio = PRIO_MAX;
		1373
		1374	coro->prio = newprio;
		1375	}
		1376	}
		1377	OUTPUT:
		1378	RETVAL
		1379
		1380	SV *
1112	ready (SV *self)	1381	ready (SV *self)
1113	PROTOTYPE: $	1382	PROTOTYPE: $
1114	CODE:	1383	CODE:
1115	api_ready (self);	1384	RETVAL = boolSV (api_ready (self));
		1385	OUTPUT:
		1386	RETVAL
		1387
		1388	SV *
		1389	is_ready (SV *self)
		1390	PROTOTYPE: $
		1391	CODE:
		1392	RETVAL = boolSV (api_is_ready (self));
		1393	OUTPUT:
		1394	RETVAL
1116		1395
1117	int	1396	int
1118	nready (...)	1397	nready (...)
1119	PROTOTYPE:	1398	PROTOTYPE:
1120	CODE:	1399	CODE:
1121	RETVAL = coro_nready;	1400	RETVAL = coro_nready;
1122	OUTPUT:	1401	OUTPUT:
1123	RETVAL	1402	RETVAL
1124		1403
1125	void
1126	schedule (...)
1127	PROTOTYPE:
1128	CODE:
1129	api_schedule ();
1130
1131	void
1132	_set_cede_self ()
1133	CODE:
1134	coro_cede_self = 1;
1135
1136	void
1137	cede (...)
1138	PROTOTYPE:
1139	CODE:
1140	api_cede ();
1141
1142	MODULE = Coro::State PACKAGE = Coro::AIO	1404	MODULE = Coro::State PACKAGE = Coro::AIO
1143		1405
1144	SV *	1406	SV *
1145	_get_state ()	1407	_get_state ()
1146	CODE:	1408	CODE:
1147	{	1409	{
1148	struct {	1410	struct io_state *data;
1149	int errorno;
1150	int laststype;
1151	int laststatval;
1152	Stat_t statcache;
1153	} data;
1154		1411
		1412	RETVAL = newSV (sizeof (struct io_state));
		1413	data = (struct io_state *)SvPVX (RETVAL);
		1414	SvCUR_set (RETVAL, sizeof (struct io_state));
		1415	SvPOK_only (RETVAL);
		1416
1155	data.errorno = errno;	1417	data->errorno = errno;
1156	data.laststype = PL_laststype;	1418	data->laststype = PL_laststype;
1157	data.laststatval = PL_laststatval;	1419	data->laststatval = PL_laststatval;
1158	data.statcache = PL_statcache;	1420	data->statcache = PL_statcache;
1159
1160	RETVAL = newSVpvn ((char *)&data, sizeof data);
1161	}	1421	}
1162	OUTPUT:	1422	OUTPUT:
1163	RETVAL	1423	RETVAL
1164		1424
1165	void	1425	void
1166	_set_state (char *data_)	1426	_set_state (char *data_)
1167	PROTOTYPE: $	1427	PROTOTYPE: $
1168	CODE:	1428	CODE:
1169	{	1429	{
1170	struct {	1430	struct io_state data = (void )data_;
1171	int errorno;
1172	int laststype;
1173	int laststatval;
1174	Stat_t statcache;
1175	} data = (void )data_;
1176		1431
1177	errno = data->errorno;	1432	errno = data->errorno;
1178	PL_laststype = data->laststype;	1433	PL_laststype = data->laststype;
1179	PL_laststatval = data->laststatval;	1434	PL_laststatval = data->laststatval;
1180	PL_statcache = data->statcache;	1435	PL_statcache = data->statcache;
1181	}	1436	}
		1437

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Comparing Coro/Coro/State.xs (file contents): Revision 1.90 by root, Sat Nov 25 00:56:35 2006 UTC vs. Revision 1.147 by root, Mon Mar 19 15:50:48 2007 UTC

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Comparing Coro/Coro/State.xs (file contents):
Revision 1.90 by root, Sat Nov 25 00:56:35 2006 UTC vs.
Revision 1.147 by root, Mon Mar 19 15:50:48 2007 UTC