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

Comparing Coro/Coro/State.xs (file contents):
Revision 1.78 by root, Wed Nov 1 01:21:21 2006 UTC vs.
Revision 1.146 by root, Sat Mar 17 19:51:57 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? */
63	#define UCORO_STATE "_coro_state"	89	#ifndef CORO_PREFER_PERL_FUNCTIONS
		90	# define CORO_PREFER_PERL_FUNCTIONS 0
		91	#endif
64		92
65	/* 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
66	* 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
67	* and should be unique. */	95	* and should be unique. */
		96	#define dSTACKLEVEL int stacklevel
68	#define dSTACKLEVEL void *stacklevel = &stacklevel	97	#define STACKLEVEL ((void *)&stacklevel)
69		98
70	#define IN_DESTRUCT (PL_main_cv == Nullcv)	99	#define IN_DESTRUCT (PL_main_cv == Nullcv)
71		100
72	#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))
73		110
74	#include "CoroAPI.h"	111	#include "CoroAPI.h"
75		112
76	#ifdef USE_ITHREADS	113	#ifdef USE_ITHREADS
77	static perl_mutex coro_mutex;	114	static perl_mutex coro_mutex;
…		…
80	#else	117	#else
81	# define LOCK (void)0	118	# define LOCK (void)0
82	# define UNLOCK (void)0	119	# define UNLOCK (void)0
83	#endif	120	#endif
84		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;
85	static struct CoroAPI coroapi;	132	static struct CoroAPI coroapi;
86	static AV main_mainstack; / used to differentiate between $main and others */	133	static AV main_mainstack; / used to differentiate between $main and others */
87	static HV *coro_state_stash;	134	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 */	135	static SV coro_mortal; / will be freed after next transfer */
91		136
92	/* this is actually not only 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 */
93	typedef struct {	141	typedef struct coro_cctx {
94	int refcnt; /* pointer reference counter */	142	struct coro_cctx *next;
95	int usecnt; /* shared by how many coroutines */
96	int gencnt; /* generation counter */
97		143
		144	/* the stack */
		145	void *sptr;
		146	size_t ssize;
		147
		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		153
100	void *sptr;	154	#if CORO_USE_VALGRIND
101	long ssize; /* positive == mmap, otherwise malloc */	155	int valgrind_id;
102	} coro_stack;	156	#endif
		157	char inuse, mapped;
		158	} coro_cctx;
103		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 */
104	struct coro {	168	struct coro {
105	/* the top-level JMPENV for each coroutine, needed to catch dies. */	169	/* the c coroutine allocated to this perl coroutine, if any */
106	JMPENV start_env;	170	coro_cctx *cctx;
107
108	/* the optional C context */
109	coro_stack *stack;
110	void *cursp;
111	int gencnt;
112
113	/* optionally saved, might be zero */
114	AV *defav;
115	SV *defsv;
116	SV *errsv;
117
118	/* saved global state not related to stacks */
119	U8 dowarn;
120	I32 in_eval;
121
122	/* the stacks and related info (callchain etc..) */
123	PERL_SI *curstackinfo;
124	AV *curstack;
125	AV *mainstack;
126	SV **stack_sp;
127	OP *op;
128	SV **curpad;
129	AV *comppad;
130	CV *compcv;
131	SV **stack_base;
132	SV **stack_max;
133	SV **tmps_stack;
134	I32 tmps_floor;
135	I32 tmps_ix;
136	I32 tmps_max;
137	I32 *markstack;
138	I32 *markstack_ptr;
139	I32 *markstack_max;
140	I32 *scopestack;
141	I32 scopestack_ix;
142	I32 scopestack_max;
143	ANY *savestack;
144	I32 savestack_ix;
145	I32 savestack_max;
146	OP **retstack;
147	I32 retstack_ix;
148	I32 retstack_max;
149	PMOP *curpm;
150	COP *curcop;
151	JMPENV *top_env;
152		171
153	/* data associated with this coroutine (initial args) */	172	/* data associated with this coroutine (initial args) */
154	AV *args;	173	AV *args;
		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	SV irssv; / $/ */
		183	SV irssv_sv; / real $/ cache */
		184
		185	#define VAR(name,type) type name;
		186	# include "state.h"
		187	#undef VAR
		188
		189	/* coro process data */
		190	int prio;
155	};	191	};
156		192
157	typedef struct coro *Coro__State;	193	typedef struct coro *Coro__State;
158	typedef struct coro *Coro__State_or_hashref;	194	typedef struct coro *Coro__State_or_hashref;
159		195
		196	/ Coro ******************************************************************/
		197
		198	#define PRIO_MAX 3
		199	#define PRIO_HIGH 1
		200	#define PRIO_NORMAL 0
		201	#define PRIO_LOW -1
		202	#define PRIO_IDLE -3
		203	#define PRIO_MIN -4
		204
		205	/* for Coro.pm */
		206	static SV *coro_current;
		207	static AV *coro_ready [PRIO_MAX-PRIO_MIN+1];
		208	static int coro_nready;
		209
		210	/ lowlevel stuff ********************************************************/
		211
160	static AV *	212	static AV *
161	coro_clone_padlist (pTHX_ CV *cv)	213	coro_clone_padlist (pTHX_ CV *cv)
162	{	214	{
163	AV *padlist = CvPADLIST (cv);	215	AV *padlist = CvPADLIST (cv);
164	AV newpadlist, newpad;	216	AV newpadlist, newpad;
165		217
166	newpadlist = newAV ();	218	newpadlist = newAV ();
167	AvREAL_off (newpadlist);	219	AvREAL_off (newpadlist);
		220	#if PERL_VERSION_ATLEAST (5,9,0)
		221	Perl_pad_push (aTHX_ padlist, AvFILLp (padlist) + 1);
		222	#else
168	Perl_pad_push (aTHX_ padlist, AvFILLp (padlist) + 1, 1);	223	Perl_pad_push (aTHX_ padlist, AvFILLp (padlist) + 1, 1);
		224	#endif
169	newpad = (AV *)AvARRAY (padlist)[AvFILLp (padlist)];	225	newpad = (AV *)AvARRAY (padlist)[AvFILLp (padlist)];
170	--AvFILLp (padlist);	226	--AvFILLp (padlist);
171		227
172	av_store (newpadlist, 0, SvREFCNT_inc (*av_fetch (padlist, 0, FALSE)));	228	av_store (newpadlist, 0, SvREFCNT_inc (*av_fetch (padlist, 0, FALSE)));
173	av_store (newpadlist, 1, (SV *)newpad);	229	av_store (newpadlist, 1, (SV *)newpad);
…		…
216		272
217	#define PERL_MAGIC_coro PERL_MAGIC_ext	273	#define PERL_MAGIC_coro PERL_MAGIC_ext
218		274
219	static MGVTBL vtbl_coro = {0, 0, 0, 0, coro_cv_free};	275	static MGVTBL vtbl_coro = {0, 0, 0, 0, coro_cv_free};
220		276
		277	#define CORO_MAGIC(cv) \
		278	SvMAGIC (cv) \
		279	? SvMAGIC (cv)->mg_type == PERL_MAGIC_coro \
		280	? SvMAGIC (cv) \
		281	: mg_find ((SV *)cv, PERL_MAGIC_coro) \
		282	: 0
		283
221	/* the next two functions merely cache the padlists */	284	/* the next two functions merely cache the padlists */
222	static void	285	static void
223	get_padlist (pTHX_ CV *cv)	286	get_padlist (pTHX_ CV *cv)
224	{	287	{
225	MAGIC mg = mg_find ((SV )cv, PERL_MAGIC_coro);	288	MAGIC *mg = CORO_MAGIC (cv);
		289	AV *av;
226		290
227	if (mg && AvFILLp ((AV *)mg->mg_obj) >= 0)	291	if (mg && AvFILLp ((av = (AV *)mg->mg_obj)) >= 0)
228	CvPADLIST (cv) = (AV )av_pop ((AV )mg->mg_obj);	292	CvPADLIST (cv) = (AV *)AvARRAY (av)[AvFILLp (av)--];
229	else	293	else
230	{	294	{
231	#if 0	295	#if CORO_PREFER_PERL_FUNCTIONS
232	/* this should work - but it doesn't :( */	296	/* this is probably cleaner, but also slower? */
233	CV *cp = Perl_cv_clone (aTHX_ cv);	297	CV *cp = Perl_cv_clone (cv);
234	CvPADLIST (cv) = CvPADLIST (cp);	298	CvPADLIST (cv) = CvPADLIST (cp);
235	CvPADLIST (cp) = 0;	299	CvPADLIST (cp) = 0;
236	SvREFCNT_dec (cp);	300	SvREFCNT_dec (cp);
237	#else	301	#else
238	CvPADLIST (cv) = coro_clone_padlist (aTHX_ cv);	302	CvPADLIST (cv) = coro_clone_padlist (aTHX_ cv);
…		…
241	}	305	}
242		306
243	static void	307	static void
244	put_padlist (pTHX_ CV *cv)	308	put_padlist (pTHX_ CV *cv)
245	{	309	{
246	MAGIC mg = mg_find ((SV )cv, PERL_MAGIC_coro);	310	MAGIC *mg = CORO_MAGIC (cv);
		311	AV *av;
247		312
248	if (!mg)	313	if (!mg)
249	{	314	{
250	sv_magic ((SV *)cv, 0, PERL_MAGIC_coro, 0, 0);	315	sv_magic ((SV *)cv, 0, PERL_MAGIC_coro, 0, 0);
251	mg = mg_find ((SV *)cv, PERL_MAGIC_coro);	316	mg = mg_find ((SV *)cv, PERL_MAGIC_coro);
252	mg->mg_virtual = &vtbl_coro;	317	mg->mg_virtual = &vtbl_coro;
253	mg->mg_obj = (SV *)newAV ();	318	mg->mg_obj = (SV *)newAV ();
254	}	319	}
255		320
256	av_push ((AV )mg->mg_obj, (SV )CvPADLIST (cv));	321	av = (AV *)mg->mg_obj;
		322
		323	if (AvFILLp (av) >= AvMAX (av))
		324	av_extend (av, AvMAX (av) + 1);
		325
		326	AvARRAY (av)[++AvFILLp (av)] = (SV *)CvPADLIST (cv);
257	}	327	}
		328
		329	/ load & save, init *****************************************************/
258		330
259	#define SB do {	331	#define SB do {
260	#define SE } while (0)	332	#define SE } while (0)
261		333
262	#define LOAD(state) load_state(aTHX_ (state));
263	#define SAVE(state,flags) save_state(aTHX_ (state),(flags));
264
265	#define REPLACE_SV(sv,val) SB SvREFCNT_dec(sv); (sv) = (val); (val) = 0; SE	334	#define REPLACE_SV(sv,val) SB SvREFCNT_dec (sv); (sv) = (val); (val) = 0; SE
266		335
267	static void	336	static void
268	load_state(pTHX_ Coro__State c)	337	load_perl (pTHX_ Coro__State c)
269	{	338	{
270	PL_dowarn = c->dowarn;	339	#define VAR(name,type) PL_ ## name = c->name;
271	PL_in_eval = c->in_eval;	340	# include "state.h"
272		341	#undef VAR
273	PL_curstackinfo = c->curstackinfo;
274	PL_curstack = c->curstack;
275	PL_mainstack = c->mainstack;
276	PL_stack_sp = c->stack_sp;
277	PL_op = c->op;
278	PL_curpad = c->curpad;
279	PL_comppad = c->comppad;
280	PL_compcv = c->compcv;
281	PL_stack_base = c->stack_base;
282	PL_stack_max = c->stack_max;
283	PL_tmps_stack = c->tmps_stack;
284	PL_tmps_floor = c->tmps_floor;
285	PL_tmps_ix = c->tmps_ix;
286	PL_tmps_max = c->tmps_max;
287	PL_markstack = c->markstack;
288	PL_markstack_ptr = c->markstack_ptr;
289	PL_markstack_max = c->markstack_max;
290	PL_scopestack = c->scopestack;
291	PL_scopestack_ix = c->scopestack_ix;
292	PL_scopestack_max = c->scopestack_max;
293	PL_savestack = c->savestack;
294	PL_savestack_ix = c->savestack_ix;
295	PL_savestack_max = c->savestack_max;
296	#if PERL_VERSION < 9
297	PL_retstack = c->retstack;
298	PL_retstack_ix = c->retstack_ix;
299	PL_retstack_max = c->retstack_max;
300	#endif
301	PL_curpm = c->curpm;
302	PL_curcop = c->curcop;
303	PL_top_env = c->top_env;
304		342
305	if (c->defav) REPLACE_SV (GvAV (PL_defgv), c->defav);	343	if (c->defav) REPLACE_SV (GvAV (PL_defgv), c->defav);
306	if (c->defsv) REPLACE_SV (DEFSV , c->defsv);	344	if (c->defsv) REPLACE_SV (DEFSV , c->defsv);
307	if (c->errsv) REPLACE_SV (ERRSV , c->errsv);	345	if (c->errsv) REPLACE_SV (ERRSV , c->errsv);
		346	if (c->irssv)
		347	{
		348	if (c->irssv == PL_rs \|\| sv_eq (PL_rs, c->irssv))
		349	SvREFCNT_dec (c->irssv);
		350	else
		351	{
		352	REPLACE_SV (PL_rs, c->irssv);
		353	if (!c->irssv_sv) c->irssv_sv = get_sv ("/", 0);
		354	sv_setsv (c->irssv_sv, PL_rs);
		355	}
		356	}
308		357
309	{	358	{
310	dSP;	359	dSP;
311	CV *cv;	360	CV *cv;
312		361
313	/* now do the ugly restore mess */	362	/* now do the ugly restore mess */
314	while ((cv = (CV *)POPs))	363	while ((cv = (CV *)POPs))
315	{	364	{
316	AV padlist = (AV )POPs;
317
318	if (padlist)
319	{
320	put_padlist (aTHX_ cv); /* mark this padlist as available */	365	put_padlist (aTHX_ cv); /* mark this padlist as available */
321	CvPADLIST(cv) = padlist;	366	CvDEPTH (cv) = PTR2IV (POPs);
322	}	367	CvPADLIST (cv) = (AV *)POPs;
323
324	++CvDEPTH(cv);
325	}	368	}
326		369
327	PUTBACK;	370	PUTBACK;
328	}	371	}
		372	assert (!PL_comppad \|\| AvARRAY (PL_comppad));//D
329	}	373	}
330		374
331	static void	375	static void
332	save_state(pTHX_ Coro__State c, int flags)	376	save_perl (pTHX_ Coro__State c)
333	{	377	{
		378	assert (!PL_comppad \|\| AvARRAY (PL_comppad));//D
334	{	379	{
335	dSP;	380	dSP;
336	I32 cxix = cxstack_ix;	381	I32 cxix = cxstack_ix;
337	PERL_CONTEXT *ccstk = cxstack;	382	PERL_CONTEXT *ccstk = cxstack;
338	PERL_SI *top_si = PL_curstackinfo;	383	PERL_SI *top_si = PL_curstackinfo;
…		…
340	/*	385	/*
341	* the worst thing you can imagine happens first - we have to save	386	* the worst thing you can imagine happens first - we have to save
342	* (and reinitialize) all cv's in the whole callchain :(	387	* (and reinitialize) all cv's in the whole callchain :(
343	*/	388	*/
344		389
		390	EXTEND (SP, 3 + 1);
345	PUSHs (Nullsv);	391	PUSHs (Nullsv);
346	/* this loop was inspired by pp_caller */	392	/* this loop was inspired by pp_caller */
347	for (;;)	393	for (;;)
348	{	394	{
349	while (cxix >= 0)	395	while (cxix >= 0)
350	{	396	{
351	PERL_CONTEXT *cx = &ccstk[cxix--];	397	PERL_CONTEXT *cx = &ccstk[cxix--];
352		398
353	if (CxTYPE(cx) == CXt_SUB)	399	if (CxTYPE (cx) == CXt_SUB)
354	{	400	{
355	CV *cv = cx->blk_sub.cv;	401	CV *cv = cx->blk_sub.cv;
		402
356	if (CvDEPTH(cv))	403	if (CvDEPTH (cv))
357	{	404	{
358	EXTEND (SP, CvDEPTH(cv)*2);	405	EXTEND (SP, 3);
359
360	while (--CvDEPTH(cv))
361	{
362	/* this tells the restore code to increment CvDEPTH */
363	PUSHs (Nullsv);
364	PUSHs ((SV *)cv);
365	}
366
367	PUSHs ((SV *)CvPADLIST(cv));	406	PUSHs ((SV *)CvPADLIST (cv));
		407	PUSHs (INT2PTR (SV *, CvDEPTH (cv)));
368	PUSHs ((SV *)cv);	408	PUSHs ((SV *)cv);
369		409
		410	CvDEPTH (cv) = 0;
370	get_padlist (aTHX_ cv);	411	get_padlist (aTHX_ cv);
371	}	412	}
372	}	413	}
373	#ifdef CXt_FORMAT
374	else if (CxTYPE(cx) == CXt_FORMAT)
375	{
376	/* I never used formats, so how should I know how these are implemented? */
377	/* my bold guess is as a simple, plain sub... */
378	croak ("CXt_FORMAT not yet handled. Don't switch coroutines from within formats");
379	}
380	#endif
381	}	414	}
382		415
383	if (top_si->si_type == PERLSI_MAIN)	416	if (top_si->si_type == PERLSI_MAIN)
384	break;	417	break;
385		418
…		…
389	}	422	}
390		423
391	PUTBACK;	424	PUTBACK;
392	}	425	}
393		426
394	c->defav = flags & TRANSFER_SAVE_DEFAV ? (AV *)SvREFCNT_inc (GvAV (PL_defgv)) : 0;	427	c->defav = c->save & CORO_SAVE_DEFAV ? (AV *)SvREFCNT_inc (GvAV (PL_defgv)) : 0;
395	c->defsv = flags & TRANSFER_SAVE_DEFSV ? SvREFCNT_inc (DEFSV) : 0;	428	c->defsv = c->save & CORO_SAVE_DEFSV ? SvREFCNT_inc (DEFSV) : 0;
396	c->errsv = flags & TRANSFER_SAVE_ERRSV ? SvREFCNT_inc (ERRSV) : 0;	429	c->errsv = c->save & CORO_SAVE_ERRSV ? SvREFCNT_inc (ERRSV) : 0;
		430	c->irssv = c->save & CORO_SAVE_IRSSV ? SvREFCNT_inc (PL_rs) : 0;
397		431
398	c->dowarn = PL_dowarn;	432	#define VAR(name,type)c->name = PL_ ## name;
399	c->in_eval = PL_in_eval;	433	# include "state.h"
400		434	#undef VAR
401	c->curstackinfo = PL_curstackinfo;
402	c->curstack = PL_curstack;
403	c->mainstack = PL_mainstack;
404	c->stack_sp = PL_stack_sp;
405	c->op = PL_op;
406	c->curpad = PL_curpad;
407	c->comppad = PL_comppad;
408	c->compcv = PL_compcv;
409	c->stack_base = PL_stack_base;
410	c->stack_max = PL_stack_max;
411	c->tmps_stack = PL_tmps_stack;
412	c->tmps_floor = PL_tmps_floor;
413	c->tmps_ix = PL_tmps_ix;
414	c->tmps_max = PL_tmps_max;
415	c->markstack = PL_markstack;
416	c->markstack_ptr = PL_markstack_ptr;
417	c->markstack_max = PL_markstack_max;
418	c->scopestack = PL_scopestack;
419	c->scopestack_ix = PL_scopestack_ix;
420	c->scopestack_max = PL_scopestack_max;
421	c->savestack = PL_savestack;
422	c->savestack_ix = PL_savestack_ix;
423	c->savestack_max = PL_savestack_max;
424	#if PERL_VERSION < 9
425	c->retstack = PL_retstack;
426	c->retstack_ix = PL_retstack_ix;
427	c->retstack_max = PL_retstack_max;
428	#endif
429	c->curpm = PL_curpm;
430	c->curcop = PL_curcop;
431	c->top_env = PL_top_env;
432	}	435	}
433		436
434	/*	437	/*
435	* allocate various perl stacks. This is an exact copy	438	* allocate various perl stacks. This is an exact copy
436	* of perl.c:init_stacks, except that it uses less memory	439	* of perl.c:init_stacks, except that it uses less memory
437	* on the (sometimes correct) assumption that coroutines do	440	* on the (sometimes correct) assumption that coroutines do
438	* not usually need a lot of stackspace.	441	* not usually need a lot of stackspace.
439	*/	442	*/
		443	#if CORO_PREFER_PERL_FUNCTIONS
		444	# define coro_init_stacks init_stacks
		445	#else
440	static void	446	static void
441	coro_init_stacks (pTHX)	447	coro_init_stacks (pTHX)
442	{	448	{
443	LOCK;
444
445	PL_curstackinfo = new_stackinfo(96, 1024/sizeof(PERL_CONTEXT) - 1);	449	PL_curstackinfo = new_stackinfo(128, 1024/sizeof(PERL_CONTEXT));
446	PL_curstackinfo->si_type = PERLSI_MAIN;	450	PL_curstackinfo->si_type = PERLSI_MAIN;
447	PL_curstack = PL_curstackinfo->si_stack;	451	PL_curstack = PL_curstackinfo->si_stack;
448	PL_mainstack = PL_curstack; /* remember in case we switch stacks */	452	PL_mainstack = PL_curstack; /* remember in case we switch stacks */
449		453
450	PL_stack_base = AvARRAY(PL_curstack);	454	PL_stack_base = AvARRAY(PL_curstack);
451	PL_stack_sp = PL_stack_base;	455	PL_stack_sp = PL_stack_base;
452	PL_stack_max = PL_stack_base + AvMAX(PL_curstack);	456	PL_stack_max = PL_stack_base + AvMAX(PL_curstack);
453		457
454	New(50,PL_tmps_stack,96,SV*);	458	New(50,PL_tmps_stack,128,SV*);
455	PL_tmps_floor = -1;	459	PL_tmps_floor = -1;
456	PL_tmps_ix = -1;	460	PL_tmps_ix = -1;
457	PL_tmps_max = 96;	461	PL_tmps_max = 128;
458		462
459	New(54,PL_markstack,16,I32);	463	New(54,PL_markstack,32,I32);
460	PL_markstack_ptr = PL_markstack;	464	PL_markstack_ptr = PL_markstack;
461	PL_markstack_max = PL_markstack + 16;	465	PL_markstack_max = PL_markstack + 32;
462		466
463	#ifdef SET_MARK_OFFSET	467	#ifdef SET_MARK_OFFSET
464	SET_MARK_OFFSET;	468	SET_MARK_OFFSET;
465	#endif	469	#endif
466		470
467	New(54,PL_scopestack,16,I32);	471	New(54,PL_scopestack,32,I32);
468	PL_scopestack_ix = 0;	472	PL_scopestack_ix = 0;
469	PL_scopestack_max = 16;	473	PL_scopestack_max = 32;
470		474
471	New(54,PL_savestack,96,ANY);	475	New(54,PL_savestack,64,ANY);
472	PL_savestack_ix = 0;	476	PL_savestack_ix = 0;
473	PL_savestack_max = 96;	477	PL_savestack_max = 64;
474		478
475	#if PERL_VERSION < 9	479	#if !PERL_VERSION_ATLEAST (5,9,0)
476	New(54,PL_retstack,8,OP*);	480	New(54,PL_retstack,16,OP*);
477	PL_retstack_ix = 0;	481	PL_retstack_ix = 0;
478	PL_retstack_max = 8;	482	PL_retstack_max = 16;
479	#endif	483	#endif
480
481	UNLOCK;
482	}	484	}
		485	#endif
483		486
484	/*	487	/*
485	* destroy the stacks, the callchain etc...	488	* destroy the stacks, the callchain etc...
486	*/	489	*/
487	static void	490	static void
488	destroy_stacks(pTHX)	491	coro_destroy_stacks (pTHX)
489	{	492	{
490	if (!IN_DESTRUCT)	493	if (!IN_DESTRUCT)
491	{	494	{
492	/* is this ugly, I ask? */	495	/* restore all saved variables and stuff */
493	LEAVE_SCOPE (0);	496	LEAVE_SCOPE (0);
		497	assert (PL_tmps_floor == -1);
494		498
495	/* sure it is, but more important: is it correct?? :/ */	499	/* free all temporaries */
496	FREETMPS;	500	FREETMPS;
		501	assert (PL_tmps_ix == -1);
497		502
		503	/* unwind all extra stacks */
498	/POPSTACK_TO (PL_mainstack);//D//use/	504	POPSTACK_TO (PL_mainstack);
		505
		506	/* unwind main stack */
		507	dounwind (-1);
499	}	508	}
500		509
501	while (PL_curstackinfo->si_next)	510	while (PL_curstackinfo->si_next)
502	PL_curstackinfo = PL_curstackinfo->si_next;	511	PL_curstackinfo = PL_curstackinfo->si_next;
503		512
504	while (PL_curstackinfo)	513	while (PL_curstackinfo)
505	{	514	{
506	PERL_SI *p = PL_curstackinfo->si_prev;	515	PERL_SI *p = PL_curstackinfo->si_prev;
507		516
508	{ /D//remove/
509	dSP;
510	SWITCHSTACK (PL_curstack, PL_curstackinfo->si_stack);
511	PUTBACK; /* possibly superfluous */
512	}
513
514	if (!IN_DESTRUCT)	517	if (!IN_DESTRUCT)
515	{
516	dounwind (-1);/D//remove/
517	SvREFCNT_dec (PL_curstackinfo->si_stack);	518	SvREFCNT_dec (PL_curstackinfo->si_stack);
518	}
519		519
520	Safefree (PL_curstackinfo->si_cxstack);	520	Safefree (PL_curstackinfo->si_cxstack);
521	Safefree (PL_curstackinfo);	521	Safefree (PL_curstackinfo);
522	PL_curstackinfo = p;	522	PL_curstackinfo = p;
523	}	523	}
524		524
525	Safefree (PL_tmps_stack);	525	Safefree (PL_tmps_stack);
526	Safefree (PL_markstack);	526	Safefree (PL_markstack);
527	Safefree (PL_scopestack);	527	Safefree (PL_scopestack);
528	Safefree (PL_savestack);	528	Safefree (PL_savestack);
529	#if PERL_VERSION < 9	529	#if !PERL_VERSION_ATLEAST (5,9,0)
530	Safefree (PL_retstack);	530	Safefree (PL_retstack);
531	#endif	531	#endif
532	}	532	}
533		533
534	static void	534	/ coroutine stack handling **********************************************/
535	allocate_stack (Coro__State ctx, int alloc)
536	{
537	coro_stack *stack;
538		535
539	New (0, stack, 1, coro_stack);
540
541	stack->refcnt = 1;
542	stack->usecnt = 1;
543	stack->gencnt = ctx->gencnt = 0;
544
545	if (alloc)
546	{
547	#if HAVE_MMAP
548	stack->ssize = ((STACKSIZE * sizeof (long) + PAGESIZE - 1) / PAGESIZE + STACKGUARD) * PAGESIZE; /* mmap should do allocate-on-write for us */
549	stack->sptr = mmap (0, stack->ssize, PROT_EXEC\|PROT_READ\|PROT_WRITE, MAP_PRIVATE\|MAP_ANONYMOUS, 0, 0);
550	if (stack->sptr != (void *)-1)
551	{
552	# if STACKGUARD
553	mprotect (stack->sptr, STACKGUARD * PAGESIZE, PROT_NONE);
554	# endif
555	}
556	else
557	#endif
558	{
559	stack->ssize = - (STACKSIZE * (long)sizeof (long));
560	New (0, stack->sptr, STACKSIZE, long);
561	}
562	}
563	else
564	stack->sptr = 0;
565
566	ctx->stack = stack;
567	}
568
569	static void	536	static void
570	deallocate_stack (Coro__State ctx)	537	setup_coro (pTHX_ struct coro *coro)
571	{
572	coro_stack *stack = ctx->stack;
573
574	ctx->stack = 0;
575
576	if (stack)
577	{
578	if (!--stack->refcnt)
579	{
580	#ifdef HAVE_MMAP
581	if (stack->ssize > 0 && stack->sptr)
582	munmap (stack->sptr, stack->ssize);
583	else
584	#endif
585	Safefree (stack->sptr);
586
587	Safefree (stack);
588	}
589	else if (ctx->gencnt == stack->gencnt)
590	--stack->usecnt;
591	}
592	}
593
594	static void
595	setup_coro (void *arg)
596	{	538	{
597	/*	539	/*
598	* emulate part of the perl startup here.	540	* emulate part of the perl startup here.
599	*/	541	*/
		542	coro_init_stacks (aTHX);
		543
		544	PL_curcop = &PL_compiling;
		545	PL_in_eval = EVAL_NULL;
		546	PL_comppad = 0;
		547	PL_curpm = 0;
		548	PL_localizing = 0;
		549	PL_dirty = 0;
		550	PL_restartop = 0;
		551
		552	{
		553	dSP;
		554	LOGOP myop;
		555
		556	SvREFCNT_dec (GvAV (PL_defgv));
		557	GvAV (PL_defgv) = coro->args; coro->args = 0;
		558
		559	Zero (&myop, 1, LOGOP);
		560	myop.op_next = Nullop;
		561	myop.op_flags = OPf_WANT_VOID;
		562
		563	PUSHMARK (SP);
		564	XPUSHs ((SV *)get_cv ("Coro::State::_coro_init", FALSE));
		565	PUTBACK;
		566	PL_op = (OP *)&myop;
		567	PL_op = PL_ppaddr[OP_ENTERSUB](aTHX);
		568	SPAGAIN;
		569	}
		570
		571	ENTER; /* necessary e.g. for dounwind */
		572	}
		573
		574	static void
		575	free_coro_mortal (pTHX)
		576	{
		577	if (coro_mortal)
		578	{
		579	SvREFCNT_dec (coro_mortal);
		580	coro_mortal = 0;
		581	}
		582	}
		583
		584	/* inject a fake call to Coro::State::_cctx_init into the execution */
		585	static void NOINLINE
		586	prepare_cctx (pTHX_ coro_cctx *cctx)
		587	{
		588	dSP;
		589	LOGOP myop;
		590
		591	Zero (&myop, 1, LOGOP);
		592	myop.op_next = PL_op;
		593	myop.op_flags = OPf_WANT_VOID \| OPf_STACKED;
		594
		595	PUSHMARK (SP);
		596	EXTEND (SP, 2);
		597	PUSHs (sv_2mortal (newSViv (PTR2IV (cctx))));
		598	PUSHs ((SV *)get_cv ("Coro::State::_cctx_init", FALSE));
		599	PUTBACK;
		600	PL_op = (OP *)&myop;
		601	PL_op = PL_ppaddr[OP_ENTERSUB](aTHX);
		602	SPAGAIN;
		603	}
		604
		605	static void
		606	coro_run (void *arg)
		607	{
600	dTHX;	608	dTHX;
601	dSP;
602	Coro__State ctx = (Coro__State)arg;
603	SV sub_init = (SV )get_cv (SUB_INIT, FALSE);
604		609
605	coro_init_stacks (aTHX);	610	/* coro_run is the alternative tail of transfer(), so unlock here. */
606	/PL_curcop = 0;/	611	UNLOCK;
607	/PL_in_eval = PL_in_eval;/ /* inherit */
608	SvREFCNT_dec (GvAV (PL_defgv));
609	GvAV (PL_defgv) = ctx->args; ctx->args = 0;
610		612
611	SPAGAIN;
612
613	if (ctx->stack)
614	{
615	ctx->cursp = 0;
616
617	PUSHMARK(SP);
618	PUTBACK;
619	(void) call_sv (sub_init, G_VOID\|G_NOARGS\|G_EVAL);
620
621	if (SvTRUE (ERRSV))
622	croak (NULL);
623	else
624	croak ("FATAL: CCTXT coroutine returned!");
625	}
626	else
627	{
628	UNOP myop;
629
630	PL_op = (OP *)&myop;
631
632	Zero(&myop, 1, UNOP);
633	myop.op_next = Nullop;
634	myop.op_flags = OPf_WANT_VOID;
635
636	PUSHMARK(SP);
637	XPUSHs (sub_init);
638	/*
639	* the next line is slightly wrong, as PL_op->op_next
640	* is actually being executed so we skip the first op.
641	* that doesn't matter, though, since it is only
642	* pp_nextstate and we never return...
643	* ah yes, and I don't care anyways ;)
644	*/
645	PUTBACK;
646	PL_op = PL_ppaddr[OP_ENTERSUB](aTHX);
647	SPAGAIN;
648
649	ENTER; /* necessary e.g. for dounwind */
650	}
651	}
652
653	static void
654	continue_coro (void *arg)
655	{
656	/*	613	/*
657	* this is a _very_ stripped down perl interpreter ;)	614	* this is a _very_ stripped down perl interpreter ;)
658	*/	615	*/
659	dTHX;
660	Coro__State ctx = (Coro__State)arg;
661
662	PL_top_env = &ctx->start_env;	616	PL_top_env = &PL_start_env;
663		617
664	ctx->cursp = 0;	618	/* inject call to cctx_init */
		619	prepare_cctx (aTHX_ (coro_cctx *)arg);
		620
		621	/* somebody will hit me for both perl_run and PL_restartop */
		622	PL_restartop = PL_op;
		623	perl_run (PL_curinterp);
		624
		625	fputs ("FATAL: C coroutine fell over the edge of the world, aborting. Did you call exit in a coroutine?\n", stderr);
		626	abort ();
		627	}
		628
		629	static coro_cctx *
		630	cctx_new ()
		631	{
		632	coro_cctx *cctx;
		633	void *stack_start;
		634	size_t stack_size;
		635
		636	++cctx_count;
		637
		638	Newz (0, cctx, 1, coro_cctx);
		639
		640	#if HAVE_MMAP
		641
		642	cctx->ssize = ((coro_stacksize * sizeof (long) + PAGESIZE - 1) / PAGESIZE + CORO_STACKGUARD) * PAGESIZE;
		643	/* mmap supposedly does allocate-on-write for us */
		644	cctx->sptr = mmap (0, cctx->ssize, PROT_EXEC\|PROT_READ\|PROT_WRITE, MAP_PRIVATE\|MAP_ANONYMOUS, 0, 0);
		645
		646	if (cctx->sptr != (void *)-1)
		647	{
		648	# if CORO_STACKGUARD
		649	mprotect (cctx->sptr, CORO_STACKGUARD * PAGESIZE, PROT_NONE);
		650	# endif
		651	stack_start = CORO_STACKGUARD * PAGESIZE + (char *)cctx->sptr;
		652	stack_size = cctx->ssize - CORO_STACKGUARD * PAGESIZE;
		653	cctx->mapped = 1;
		654	}
		655	else
		656	#endif
		657	{
		658	cctx->ssize = coro_stacksize * (long)sizeof (long);
		659	New (0, cctx->sptr, coro_stacksize, long);
		660
		661	if (!cctx->sptr)
		662	{
		663	perror ("FATAL: unable to allocate stack for coroutine");
		664	_exit (EXIT_FAILURE);
		665	}
		666
		667	stack_start = cctx->sptr;
		668	stack_size = cctx->ssize;
		669	}
		670
		671	REGISTER_STACK (cctx, (char )stack_start, (char )stack_start + stack_size);
		672	coro_create (&cctx->cctx, coro_run, (void *)cctx, stack_start, stack_size);
		673
		674	return cctx;
		675	}
		676
		677	static void
		678	cctx_destroy (coro_cctx *cctx)
		679	{
		680	if (!cctx)
		681	return;
		682
		683	--cctx_count;
		684
		685	#if CORO_USE_VALGRIND
		686	VALGRIND_STACK_DEREGISTER (cctx->valgrind_id);
		687	#endif
		688
		689	#if HAVE_MMAP
		690	if (cctx->mapped)
		691	munmap (cctx->sptr, cctx->ssize);
		692	else
		693	#endif
		694	Safefree (cctx->sptr);
		695
		696	Safefree (cctx);
		697	}
		698
		699	static coro_cctx *
		700	cctx_get (pTHX)
		701	{
		702	while (cctx_first)
		703	{
		704	coro_cctx *cctx = cctx_first;
		705	cctx_first = cctx->next;
		706	--cctx_idle;
		707
		708	if (cctx->ssize >= coro_stacksize)
		709	return cctx;
		710
		711	cctx_destroy (cctx);
		712	}
		713
665	PL_op = PL_op->op_next;	714	PL_op = PL_op->op_next;
666	CALLRUNOPS(aTHX);	715	return cctx_new ();
667
668	abort ();
669	}	716	}
670		717
671	static void	718	static void
		719	cctx_put (coro_cctx *cctx)
		720	{
		721	/* free another cctx if overlimit */
		722	if (cctx_idle >= MAX_IDLE_CCTX)
		723	{
		724	coro_cctx *first = cctx_first;
		725	cctx_first = first->next;
		726	--cctx_idle;
		727
		728	assert (!first->inuse);
		729	cctx_destroy (first);
		730	}
		731
		732	++cctx_idle;
		733	cctx->next = cctx_first;
		734	cctx_first = cctx;
		735	}
		736
		737	/ coroutine switching ***************************************************/
		738
		739	/* never call directly, always through the coro_state_transfer global variable */
		740	static void NOINLINE
672	transfer (pTHX_ struct coro prev, struct coro next, int flags)	741	transfer (pTHX_ struct coro prev, struct coro next)
673	{	742	{
674	dSTACKLEVEL;	743	dSTACKLEVEL;
675		744
		745	/* sometimes transfer is only called to set idle_sp */
		746	if (!next)
		747	{
		748	((coro_cctx *)prev)->idle_sp = STACKLEVEL;
		749	assert (((coro_cctx )prev)->idle_te = PL_top_env); / just for the side-effect when asserts are enabled */
		750	}
676	if (prev != next)	751	else if (prev != next)
677	{	752	{
678	if (next->mainstack)	753	coro_cctx *prev__cctx;
		754
		755	if (prev->flags & CF_NEW)
679	{	756	{
680	LOCK;	757	/* create a new empty context */
681	SAVE (prev, flags);	758	Newz (0, prev->cctx, 1, coro_cctx);
682	LOAD (next);	759	prev->cctx->inuse = 1;
683	UNLOCK;	760	prev->flags &= ~CF_NEW;
684		761	prev->flags \|= CF_RUNNING;
685	/* mark this state as in-use */
686	next->mainstack = 0;
687	next->tmps_ix = -2;
688
689	/* stacklevel changed? if yes, grab the stack for us! */
690	if (flags & TRANSFER_SAVE_CCTXT)
691	{
692	if (!prev->stack)
693	allocate_stack (prev, 0);
694	else if (prev->cursp != stacklevel
695	&& prev->stack->usecnt > 1)
696	{
697	prev->gencnt = ++prev->stack->gencnt;
698	prev->stack->usecnt = 1;
699	}
700
701	/* has our stack been invalidated? */
702	if (next->stack && next->stack->gencnt != next->gencnt)
703	{
704	deallocate_stack (next);
705	allocate_stack (next, 1);
706	coro_create (&(next->stack->cctx),
707	continue_coro, (void *)next,
708	next->stack->sptr, labs (next->stack->ssize));
709	}
710
711	coro_transfer (&(prev->stack->cctx), &(next->stack->cctx));
712	prev->cursp = stacklevel;
713	/* don't add any code here */
714	}
715	else
716	next->cursp = stacklevel;
717	}	762	}
718	else if (next->tmps_ix == -2)	763
719	croak ("tried to transfer to running coroutine");	764	/TODO: must not croak here /
		765	if (!prev->flags & CF_RUNNING)
		766	croak ("Coro::State::transfer called with non-running prev Coro::State, but can only transfer from running states");
		767
		768	if (next->flags & CF_RUNNING)
		769	croak ("Coro::State::transfer called with running next Coro::State, but can only transfer to inactive states");
		770
		771	if (next->flags & CF_DESTROYED)
		772	croak ("Coro::State::transfer called with destroyed next Coro::State, but can only transfer to inactive states");
		773
		774	prev->flags &= ~CF_RUNNING;
		775	next->flags \|= CF_RUNNING;
		776
		777	LOCK;
		778
		779	if (next->flags & CF_NEW)
		780	{
		781	/* need to start coroutine */
		782	next->flags &= ~CF_NEW;
		783	/* first get rid of the old state */
		784	save_perl (aTHX_ prev);
		785	/* setup coroutine call */
		786	setup_coro (aTHX_ next);
		787	/* need a new stack */
		788	assert (!next->cctx);
		789	}
720	else	790	else
721	{	791	{
722	LOCK;	792	/* coroutine already started */
723	SAVE (prev, -1); /* first get rid of the old state */	793	save_perl (aTHX_ prev);
724	UNLOCK;	794	load_perl (aTHX_ next);
725
726	if (flags & TRANSFER_SAVE_CCTXT)
727	{
728	if (!prev->stack)
729	allocate_stack (prev, 0);
730
731	if (prev->stack->sptr && flags & TRANSFER_LAZY_STACK)
732	{
733	PL_top_env = &next->start_env;
734
735	setup_coro (next);
736	next->cursp = stacklevel;
737
738	prev->stack->refcnt++;
739	prev->stack->usecnt++;
740	next->stack = prev->stack;
741	next->gencnt = prev->gencnt;
742	}
743	else
744	{
745	assert (!next->stack);
746	allocate_stack (next, 1);
747	coro_create (&(next->stack->cctx),
748	setup_coro, (void *)next,
749	next->stack->sptr, labs (next->stack->ssize));
750	coro_transfer (&(prev->stack->cctx), &(next->stack->cctx));
751	prev->cursp = stacklevel;
752	/* don't add any code here */
753	}
754	}
755	else
756	{
757	setup_coro (next);
758	next->cursp = stacklevel;
759	}
760	}	795	}
761	}
762		796
763	LOCK;	797	prev__cctx = prev->cctx;
764	if (coro_mortal)	798
765	{	799	/* possibly "free" the cctx */
766	SvREFCNT_dec (coro_mortal);	800	if (prev__cctx->idle_sp == STACKLEVEL)
767	coro_mortal = 0;	801	{
768	}	802	/* I assume that STACKLEVEL is a stronger indicator than PL_top_env changes */
		803	assert (("ERROR: current top_env must equal previous top_env", PL_top_env == prev__cctx->idle_te));
		804
		805	prev->cctx = 0;
		806
		807	cctx_put (prev__cctx);
		808	prev__cctx->inuse = 0;
		809	}
		810
		811	if (!next->cctx)
		812	{
		813	next->cctx = cctx_get (aTHX);
		814	assert (!next->cctx->inuse);
		815	next->cctx->inuse = 1;
		816	}
		817
		818	if (prev__cctx != next->cctx)
		819	{
		820	prev__cctx->top_env = PL_top_env;
		821	PL_top_env = next->cctx->top_env;
		822	coro_transfer (&prev__cctx->cctx, &next->cctx->cctx);
		823	}
		824
		825	free_coro_mortal (aTHX);
769	UNLOCK;	826	UNLOCK;
		827	}
770	}	828	}
771		829
772	#define SV_CORO(sv,func) \	830	struct transfer_args
773	do { \	831	{
774	if (SvROK (sv)) \	832	struct coro prev, next;
775	sv = SvRV (sv); \	833	};
776	\
777	if (SvTYPE (sv) == SVt_PVHV) \
778	{ \
779	HE he = hv_fetch_ent ((HV )sv, ucoro_state_sv, 0, ucoro_state_hash); \
780	\
781	if (!he) \
782	croak ("%s() -- %s is a hashref but lacks the " UCORO_STATE " key", func, # sv); \
783	\
784	(sv) = SvRV (HeVAL(he)); \
785	} \
786	\
787	/* must also be changed inside Coro::Cont::yield */ \
788	if (!SvOBJECT (sv) \|\| SvSTASH (sv) != coro_state_stash) \
789	croak ("%s() -- %s is not (and contains not) a Coro::State object", func, # sv); \
790	\
791	} while(0)
792		834
793	#define SvSTATE(sv) INT2PTR (struct coro *, SvIV (sv))	835	#define TRANSFER(ta) transfer (aTHX_ (ta).prev, (ta).next)
794		836
		837	/ high level stuff ******************************************************/
		838
795	static void	839	static int
		840	coro_state_destroy (pTHX_ struct coro *coro)
		841	{
		842	if (coro->flags & CF_DESTROYED)
		843	return 0;
		844
		845	coro->flags \|= CF_DESTROYED;
		846
		847	if (coro->flags & CF_READY)
		848	{
		849	/* reduce nready, as destroying a ready coro effectively unreadies it */
		850	/* alternative: look through all ready queues and remove the coro */
		851	LOCK;
		852	--coro_nready;
		853	UNLOCK;
		854	}
		855	else
		856	coro->flags \|= CF_READY; /* make sure it is NOT put into the readyqueue */
		857
		858	if (coro->mainstack && coro->mainstack != main_mainstack)
		859	{
		860	struct coro temp;
		861
		862	assert (!(coro->flags & CF_RUNNING));
		863
		864	Zero (&temp, 1, struct coro);
		865	temp.save = CORO_SAVE_ALL;
		866
		867	if (coro->flags & CF_RUNNING)
		868	croak ("FATAL: tried to destroy currently running coroutine");
		869
		870	save_perl (aTHX_ &temp);
		871	load_perl (aTHX_ coro);
		872
		873	coro_destroy_stacks (aTHX);
		874
		875	load_perl (aTHX_ &temp); /* this will get rid of defsv etc.. */
		876
		877	coro->mainstack = 0;
		878	}
		879
		880	cctx_destroy (coro->cctx);
		881	SvREFCNT_dec (coro->args);
		882
		883	return 1;
		884	}
		885
		886	static int
		887	coro_state_free (pTHX_ SV sv, MAGIC mg)
		888	{
		889	struct coro coro = (struct coro )mg->mg_ptr;
		890	mg->mg_ptr = 0;
		891
		892	if (--coro->refcnt < 0)
		893	{
		894	coro_state_destroy (aTHX_ coro);
		895	Safefree (coro);
		896	}
		897
		898	return 0;
		899	}
		900
		901	static int
		902	coro_state_dup (pTHX_ MAGIC mg, CLONE_PARAMS params)
		903	{
		904	struct coro coro = (struct coro )mg->mg_ptr;
		905
		906	++coro->refcnt;
		907
		908	return 0;
		909	}
		910
		911	static MGVTBL coro_state_vtbl = {
		912	0, 0, 0, 0,
		913	coro_state_free,
		914	0,
		915	#ifdef MGf_DUP
		916	coro_state_dup,
		917	#else
		918	# define MGf_DUP 0
		919	#endif
		920	};
		921
		922	static struct coro *
		923	SvSTATE_ (pTHX_ SV *coro)
		924	{
		925	HV *stash;
		926	MAGIC *mg;
		927
		928	if (SvROK (coro))
		929	coro = SvRV (coro);
		930
		931	stash = SvSTASH (coro);
		932	if (stash != coro_stash && stash != coro_state_stash)
		933	{
		934	/* very slow, but rare, check */
		935	if (!sv_derived_from (sv_2mortal (newRV_inc (coro)), "Coro::State"))
		936	croak ("Coro::State object required");
		937	}
		938
		939	mg = CORO_MAGIC (coro);
		940	return (struct coro *)mg->mg_ptr;
		941	}
		942
		943	#define SvSTATE(sv) SvSTATE_ (aTHX_ (sv))
		944
		945	static void
		946	prepare_transfer (pTHX_ struct transfer_args ta, SV prev_sv, SV *next_sv)
		947	{
		948	ta->prev = SvSTATE (prev_sv);
		949	ta->next = SvSTATE (next_sv);
		950	}
		951
		952	static void
796	api_transfer(pTHX_ SV prev, SV next, int flags)	953	api_transfer (SV prev_sv, SV next_sv)
797	{	954	{
798	SV_CORO (prev, "Coro::transfer");	955	dTHX;
799	SV_CORO (next, "Coro::transfer");	956	struct transfer_args ta;
800		957
801	transfer (aTHX_ SvSTATE (prev), SvSTATE (next), flags);	958	prepare_transfer (aTHX_ &ta, prev_sv, next_sv);
		959	TRANSFER (ta);
		960	}
		961
		962	static int
		963	api_save (SV *coro_sv, int new_save)
		964	{
		965	dTHX;
		966	struct coro *coro = SvSTATE (coro_sv);
		967	int old_save = coro->save;
		968
		969	if (new_save >= 0)
		970	coro->save = new_save;
		971
		972	return old_save;
802	}	973	}
803		974
804	/ Coro ******************************************************************/	975	/ Coro ******************************************************************/
805		976
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	977	static void
819	coro_enq (pTHX_ SV *sv)	978	coro_enq (pTHX_ SV *coro_sv)
820	{	979	{
821	SV **xprio;
822	int prio;
823
824	if (SvTYPE (sv) != SVt_PVHV)
825	croak ("Coro::ready tried to enqueue something that is not a coroutine");
826
827	xprio = hv_fetch ((HV *)sv, "prio", 4, 0);
828	prio = xprio ? SvIV (*xprio) : PRIO_NORMAL;
829
830	prio = prio > PRIO_MAX ? PRIO_MAX
831	: prio < PRIO_MIN ? PRIO_MIN
832	: prio;
833
834	av_push (coro_ready [prio - PRIO_MIN], sv);	980	av_push (coro_ready [SvSTATE (coro_sv)->prio - PRIO_MIN], coro_sv);
835	coro_nready++;
836	}	981	}
837		982
838	static SV *	983	static SV *
839	coro_deq (pTHX_ int min_prio)	984	coro_deq (pTHX_ int min_prio)
840	{	985	{
…		…
843	min_prio -= PRIO_MIN;	988	min_prio -= PRIO_MIN;
844	if (min_prio < 0)	989	if (min_prio < 0)
845	min_prio = 0;	990	min_prio = 0;
846		991
847	for (prio = PRIO_MAX - PRIO_MIN + 1; --prio >= min_prio; )	992	for (prio = PRIO_MAX - PRIO_MIN + 1; --prio >= min_prio; )
848	if (av_len (coro_ready[prio]) >= 0)	993	if (AvFILLp (coro_ready [prio]) >= 0)
849	{
850	coro_nready--;
851	return av_shift (coro_ready[prio]);	994	return av_shift (coro_ready [prio]);
852	}
853		995
854	return 0;	996	return 0;
855	}	997	}
856		998
857	static void	999	static int
858	api_ready (SV *coro)	1000	api_ready (SV *coro_sv)
859	{	1001	{
860	dTHX;	1002	dTHX;
		1003	struct coro *coro;
861		1004
862	if (SvROK (coro))	1005	if (SvROK (coro_sv))
863	coro = SvRV (coro);	1006	coro_sv = SvRV (coro_sv);
		1007
		1008	coro = SvSTATE (coro_sv);
		1009
		1010	if (coro->flags & CF_READY)
		1011	return 0;
		1012
		1013	coro->flags \|= CF_READY;
864		1014
865	LOCK;	1015	LOCK;
866	coro_enq (aTHX_ SvREFCNT_inc (coro));	1016	coro_enq (aTHX_ SvREFCNT_inc (coro_sv));
		1017	++coro_nready;
867	UNLOCK;	1018	UNLOCK;
		1019
		1020	return 1;
		1021	}
		1022
		1023	static int
		1024	api_is_ready (SV *coro_sv)
		1025	{
		1026	dTHX;
		1027	return !!(SvSTATE (coro_sv)->flags & CF_READY);
		1028	}
		1029
		1030	static void
		1031	prepare_schedule (pTHX_ struct transfer_args *ta)
		1032	{
		1033	SV prev_sv, next_sv;
		1034
		1035	for (;;)
		1036	{
		1037	LOCK;
		1038	next_sv = coro_deq (aTHX_ PRIO_MIN);
		1039
		1040	/* nothing to schedule: call the idle handler */
		1041	if (!next_sv)
		1042	{
		1043	dSP;
		1044	UNLOCK;
		1045
		1046	ENTER;
		1047	SAVETMPS;
		1048
		1049	PUSHMARK (SP);
		1050	PUTBACK;
		1051	call_sv (get_sv ("Coro::idle", FALSE), G_DISCARD);
		1052
		1053	FREETMPS;
		1054	LEAVE;
		1055	continue;
		1056	}
		1057
		1058	ta->next = SvSTATE (next_sv);
		1059
		1060	/* cannot transfer to destroyed coros, skip and look for next */
		1061	if (ta->next->flags & CF_DESTROYED)
		1062	{
		1063	UNLOCK;
		1064	SvREFCNT_dec (next_sv);
		1065	/* coro_nready is already taken care of by destroy */
		1066	continue;
		1067	}
		1068
		1069	--coro_nready;
		1070	UNLOCK;
		1071	break;
		1072	}
		1073
		1074	/* free this only after the transfer */
		1075	prev_sv = SvRV (coro_current);
		1076	SvRV_set (coro_current, next_sv);
		1077	ta->prev = SvSTATE (prev_sv);
		1078
		1079	assert (ta->next->flags & CF_READY);
		1080	ta->next->flags &= ~CF_READY;
		1081
		1082	LOCK;
		1083	free_coro_mortal (aTHX);
		1084	coro_mortal = prev_sv;
		1085	UNLOCK;
		1086	}
		1087
		1088	static void
		1089	prepare_cede (pTHX_ struct transfer_args *ta)
		1090	{
		1091	api_ready (coro_current);
		1092	prepare_schedule (aTHX_ ta);
		1093	}
		1094
		1095	static int
		1096	prepare_cede_notself (pTHX_ struct transfer_args *ta)
		1097	{
		1098	if (coro_nready)
		1099	{
		1100	SV *prev = SvRV (coro_current);
		1101	prepare_schedule (aTHX_ ta);
		1102	api_ready (prev);
		1103	return 1;
		1104	}
		1105	else
		1106	return 0;
868	}	1107	}
869		1108
870	static void	1109	static void
871	api_schedule (void)	1110	api_schedule (void)
872	{	1111	{
873	dTHX;	1112	dTHX;
		1113	struct transfer_args ta;
874		1114
875	SV prev, next;	1115	prepare_schedule (aTHX_ &ta);
876		1116	TRANSFER (ta);
877	LOCK;
878
879	prev = SvRV (GvSV (coro_current));
880	next = coro_deq (aTHX_ PRIO_MIN);
881
882	if (!next)
883	next = SvREFCNT_inc (SvRV (GvSV (coro_idle)));
884
885	/* free this only after the transfer */
886	coro_mortal = prev;
887	SV_CORO (prev, "Coro::schedule");
888
889	SvRV (GvSV (coro_current)) = next;
890
891	SV_CORO (next, "Coro::schedule");
892
893	UNLOCK;
894
895	transfer (aTHX_ SvSTATE (prev), SvSTATE (next),
896	TRANSFER_SAVE_ALL \| TRANSFER_LAZY_STACK);
897	}	1117	}
898		1118
899	static void	1119	static int
900	api_cede (void)	1120	api_cede (void)
901	{	1121	{
902	dTHX;	1122	dTHX;
		1123	struct transfer_args ta;
903		1124
904	LOCK;	1125	prepare_cede (aTHX_ &ta);
905	coro_enq (aTHX_ SvREFCNT_inc (SvRV (GvSV (coro_current))));
906	UNLOCK;
907		1126
908	api_schedule ();	1127	if (ta.prev != ta.next)
		1128	{
		1129	TRANSFER (ta);
		1130	return 1;
		1131	}
		1132	else
		1133	return 0;
		1134	}
		1135
		1136	static int
		1137	api_cede_notself (void)
		1138	{
		1139	dTHX;
		1140	struct transfer_args ta;
		1141
		1142	if (prepare_cede_notself (aTHX_ &ta))
		1143	{
		1144	TRANSFER (ta);
		1145	return 1;
		1146	}
		1147	else
		1148	return 0;
909	}	1149	}
910		1150
911	MODULE = Coro::State PACKAGE = Coro::State	1151	MODULE = Coro::State PACKAGE = Coro::State
912		1152
913	PROTOTYPES: ENABLE	1153	PROTOTYPES: DISABLE
914		1154
915	BOOT:	1155	BOOT:
916	{ /* {} necessary for stoopid perl-5.6.x */	1156	{
917	#ifdef USE_ITHREADS	1157	#ifdef USE_ITHREADS
918	MUTEX_INIT (&coro_mutex);	1158	MUTEX_INIT (&coro_mutex);
919	#endif	1159	#endif
920	BOOT_PAGESIZE;	1160	BOOT_PAGESIZE;
921		1161
922	ucoro_state_sv = newSVpv (UCORO_STATE, sizeof(UCORO_STATE) - 1);
923	PERL_HASH(ucoro_state_hash, UCORO_STATE, sizeof(UCORO_STATE) - 1);
924	coro_state_stash = gv_stashpv ("Coro::State", TRUE);	1162	coro_state_stash = gv_stashpv ("Coro::State", TRUE);
925		1163
926	newCONSTSUB (coro_state_stash, "SAVE_DEFAV", newSViv (TRANSFER_SAVE_DEFAV));	1164	newCONSTSUB (coro_state_stash, "SAVE_DEFAV", newSViv (CORO_SAVE_DEFAV));
927	newCONSTSUB (coro_state_stash, "SAVE_DEFSV", newSViv (TRANSFER_SAVE_DEFSV));	1165	newCONSTSUB (coro_state_stash, "SAVE_DEFSV", newSViv (CORO_SAVE_DEFSV));
928	newCONSTSUB (coro_state_stash, "SAVE_ERRSV", newSViv (TRANSFER_SAVE_ERRSV));	1166	newCONSTSUB (coro_state_stash, "SAVE_ERRSV", newSViv (CORO_SAVE_ERRSV));
		1167	newCONSTSUB (coro_state_stash, "SAVE_IRSSV", newSViv (CORO_SAVE_IRSSV));
929	newCONSTSUB (coro_state_stash, "SAVE_CCTXT", newSViv (TRANSFER_SAVE_CCTXT));	1168	newCONSTSUB (coro_state_stash, "SAVE_ALL", newSViv (CORO_SAVE_ALL));
930		1169
931	main_mainstack = PL_mainstack;	1170	main_mainstack = PL_mainstack;
932		1171
933	coroapi.ver = CORO_API_VERSION;	1172	coroapi.ver = CORO_API_VERSION;
934	coroapi.transfer = api_transfer;	1173	coroapi.transfer = api_transfer;
935	}
936		1174
937	Coro::State	1175	assert (("PRIO_NORMAL must be 0", !PRIO_NORMAL));
938	_newprocess(args)	1176	}
939	SV * args	1177
940	PROTOTYPE: $	1178	SV *
		1179	new (char *klass, ...)
941	CODE:	1180	CODE:
942	Coro__State coro;	1181	{
		1182	struct coro *coro;
		1183	HV *hv;
		1184	int i;
943		1185
944	if (!SvROK (args) \|\| SvTYPE (SvRV (args)) != SVt_PVAV)
945	croak ("Coro::State::_newprocess expects an arrayref");
946
947	Newz (0, coro, 1, struct coro);	1186	Newz (0, coro, 1, struct coro);
		1187	coro->args = newAV ();
		1188	coro->save = CORO_SAVE_ALL;
		1189	coro->flags = CF_NEW;
948		1190
949	coro->args = (AV *)SvREFCNT_inc (SvRV (args));	1191	hv = newHV ();
950	/coro->mainstack = 0; //actual work is done inside transfer /	1192	sv_magicext ((SV )hv, 0, PERL_MAGIC_ext, &coro_state_vtbl, (char )coro, 0)->mg_flags \|= MGf_DUP;
951	/coro->stack = 0;/	1193	RETVAL = sv_bless (newRV_noinc ((SV *)hv), gv_stashpv (klass, 1));
952		1194
953	/* same as JMPENV_BOOTSTRAP */	1195	for (i = 1; i < items; i++)
954	/* we might be able to recycle start_env, but safe is safe */	1196	av_push (coro->args, newSVsv (ST (i)));
955	/Zero(&coro->start_env, 1, JMPENV);/	1197	}
956	coro->start_env.je_ret = -1;
957	coro->start_env.je_mustcatch = TRUE;
958
959	RETVAL = coro;
960	OUTPUT:	1198	OUTPUT:
961	RETVAL	1199	RETVAL
962		1200
		1201	int
		1202	save (SV *coro, int new_save = -1)
		1203	CODE:
		1204	RETVAL = api_save (coro, new_save);
		1205	OUTPUT:
		1206	RETVAL
		1207
963	void	1208	void
964	transfer(prev, next, flags)	1209	_set_stacklevel (...)
965	SV *prev	1210	ALIAS:
966	SV *next	1211	Coro::State::transfer = 1
967	int flags	1212	Coro::schedule = 2
968	PROTOTYPE: @	1213	Coro::cede = 3
		1214	Coro::cede_notself = 4
969	CODE:	1215	CODE:
970	PUTBACK;	1216	{
971	SV_CORO (next, "Coro::transfer");	1217	struct transfer_args ta;
972	SV_CORO (prev, "Coro::transfer");	1218
973	transfer (aTHX_ SvSTATE (prev), SvSTATE (next), flags);	1219	switch (ix)
974	SPAGAIN;	1220	{
		1221	case 0:
		1222	ta.prev = (struct coro )INT2PTR (coro_cctx , SvIV (ST (0)));
		1223	ta.next = 0;
		1224	break;
		1225
		1226	case 1:
		1227	if (items != 2)
		1228	croak ("Coro::State::transfer (prev,next) expects two arguments, not %d", items);
		1229
		1230	prepare_transfer (aTHX_ &ta, ST (0), ST (1));
		1231	break;
		1232
		1233	case 2:
		1234	prepare_schedule (aTHX_ &ta);
		1235	break;
		1236
		1237	case 3:
		1238	prepare_cede (aTHX_ &ta);
		1239	break;
		1240
		1241	case 4:
		1242	if (!prepare_cede_notself (aTHX_ &ta))
		1243	XSRETURN_EMPTY;
		1244
		1245	break;
		1246	}
		1247
		1248	BARRIER;
		1249	TRANSFER (ta);
		1250
		1251	if (GIMME_V != G_VOID && ta.next != ta.prev)
		1252	XSRETURN_YES;
		1253	}
		1254
		1255	bool
		1256	_destroy (SV *coro_sv)
		1257	CODE:
		1258	RETVAL = coro_state_destroy (aTHX_ SvSTATE (coro_sv));
		1259	OUTPUT:
		1260	RETVAL
975		1261
976	void	1262	void
977	DESTROY(coro)
978	Coro::State coro
979	CODE:
980
981	if (coro->mainstack && coro->mainstack != main_mainstack)
982	{
983	struct coro temp;
984
985	PUTBACK;
986	SAVE (aTHX_ (&temp), TRANSFER_SAVE_ALL);
987	LOAD (aTHX_ coro);
988	SPAGAIN;
989
990	destroy_stacks (aTHX);
991
992	LOAD ((&temp)); /* this will get rid of defsv etc.. */
993	SPAGAIN;
994
995	coro->mainstack = 0;
996	}
997
998	deallocate_stack (coro);
999	SvREFCNT_dec (coro->args);
1000	Safefree (coro);
1001
1002	void
1003	_exit(code)	1263	_exit (code)
1004	int code	1264	int code
1005	PROTOTYPE: $	1265	PROTOTYPE: $
1006	CODE:	1266	CODE:
1007	_exit (code);	1267	_exit (code);
1008		1268
1009	MODULE = Coro::State PACKAGE = Coro::Cont	1269	int
		1270	cctx_stacksize (int new_stacksize = 0)
		1271	CODE:
		1272	RETVAL = coro_stacksize;
		1273	if (new_stacksize)
		1274	coro_stacksize = new_stacksize;
		1275	OUTPUT:
		1276	RETVAL
1010		1277
1011	# this is slightly dirty (should expose a c-level api)	1278	int
		1279	cctx_count ()
		1280	CODE:
		1281	RETVAL = cctx_count;
		1282	OUTPUT:
		1283	RETVAL
1012		1284
1013	void	1285	int
1014	yield(...)	1286	cctx_idle ()
1015	PROTOTYPE: @	1287	CODE:
1016	CODE:	1288	RETVAL = cctx_idle;
1017	SV *yieldstack;	1289	OUTPUT:
1018	SV *sv;	1290	RETVAL
1019	AV *defav = GvAV (PL_defgv);
1020	struct coro prev, next;
1021
1022	yieldstack = *hv_fetch (
1023	(HV *)SvRV (GvSV (coro_current)),
1024	"yieldstack", sizeof ("yieldstack") - 1,
1025	0
1026	);
1027
1028	/* set up @_ -- ugly */
1029	av_clear (defav);
1030	av_fill (defav, items - 1);
1031	while (items--)
1032	av_store (defav, items, SvREFCNT_inc (ST(items)));
1033
1034	sv = av_pop ((AV *)SvRV (yieldstack));
1035	prev = INT2PTR (struct coro , SvIV ((SV)SvRV (av_fetch ((AV )SvRV (sv), 0, 0))));
1036	next = INT2PTR (struct coro , SvIV ((SV)SvRV (av_fetch ((AV )SvRV (sv), 1, 0))));
1037	SvREFCNT_dec (sv);
1038
1039	transfer (aTHX_ prev, next, 0);
1040		1291
1041	MODULE = Coro::State PACKAGE = Coro	1292	MODULE = Coro::State PACKAGE = Coro
1042		1293
1043	# this is slightly dirty (should expose a c-level api)
1044
1045	BOOT:	1294	BOOT:
1046	{	1295	{
1047	int i;	1296	int i;
		1297
1048	HV *stash = gv_stashpv ("Coro", TRUE);	1298	coro_stash = gv_stashpv ("Coro", TRUE);
1049		1299
1050	newCONSTSUB (stash, "PRIO_MAX", newSViv (PRIO_MAX));	1300	newCONSTSUB (coro_stash, "PRIO_MAX", newSViv (PRIO_MAX));
1051	newCONSTSUB (stash, "PRIO_HIGH", newSViv (PRIO_HIGH));	1301	newCONSTSUB (coro_stash, "PRIO_HIGH", newSViv (PRIO_HIGH));
1052	newCONSTSUB (stash, "PRIO_NORMAL", newSViv (PRIO_NORMAL));	1302	newCONSTSUB (coro_stash, "PRIO_NORMAL", newSViv (PRIO_NORMAL));
1053	newCONSTSUB (stash, "PRIO_LOW", newSViv (PRIO_LOW));	1303	newCONSTSUB (coro_stash, "PRIO_LOW", newSViv (PRIO_LOW));
1054	newCONSTSUB (stash, "PRIO_IDLE", newSViv (PRIO_IDLE));	1304	newCONSTSUB (coro_stash, "PRIO_IDLE", newSViv (PRIO_IDLE));
1055	newCONSTSUB (stash, "PRIO_MIN", newSViv (PRIO_MIN));	1305	newCONSTSUB (coro_stash, "PRIO_MIN", newSViv (PRIO_MIN));
1056		1306
1057	coro_current = gv_fetchpv ("Coro::current", TRUE, SVt_PV);	1307	coro_current = get_sv ("Coro::current", FALSE);
1058	coro_idle = gv_fetchpv ("Coro::idle" , TRUE, SVt_PV);	1308	SvREADONLY_on (coro_current);
1059		1309
1060	for (i = PRIO_MAX - PRIO_MIN + 1; i--; )	1310	for (i = PRIO_MAX - PRIO_MIN + 1; i--; )
1061	coro_ready[i] = newAV ();	1311	coro_ready[i] = newAV ();
1062		1312
1063	{	1313	{
1064	SV *sv = perl_get_sv("Coro::API", 1);	1314	SV *sv = perl_get_sv("Coro::API", 1);
1065		1315
1066	coroapi.schedule = api_schedule;	1316	coroapi.schedule = api_schedule;
		1317	coroapi.save = api_save;
1067	coroapi.cede = api_cede;	1318	coroapi.cede = api_cede;
		1319	coroapi.cede_notself = api_cede_notself;
1068	coroapi.ready = api_ready;	1320	coroapi.ready = api_ready;
		1321	coroapi.is_ready = api_is_ready;
1069	coroapi.nready = &coro_nready;	1322	coroapi.nready = &coro_nready;
1070	coroapi.current = coro_current;	1323	coroapi.current = coro_current;
1071		1324
1072	GCoroAPI = &coroapi;	1325	GCoroAPI = &coroapi;
1073	sv_setiv(sv, (IV)&coroapi);	1326	sv_setiv (sv, (IV)&coroapi);
1074	SvREADONLY_on(sv);	1327	SvREADONLY_on (sv);
1075	}	1328	}
1076	}	1329	}
1077		1330
1078	#if !PERL_MICRO
1079
1080	void	1331	void
1081	ready(self)	1332	_set_current (SV *current)
1082	SV * self
1083	PROTOTYPE: $	1333	PROTOTYPE: $
1084	CODE:	1334	CODE:
1085	api_ready (self);	1335	SvREFCNT_dec (SvRV (coro_current));
1086		1336	SvRV_set (coro_current, SvREFCNT_inc (SvRV (current)));
1087	#endif
1088		1337
1089	int	1338	int
		1339	prio (Coro::State coro, int newprio = 0)
		1340	ALIAS:
		1341	nice = 1
		1342	CODE:
		1343	{
		1344	RETVAL = coro->prio;
		1345
		1346	if (items > 1)
		1347	{
		1348	if (ix)
		1349	newprio = coro->prio - newprio;
		1350
		1351	if (newprio < PRIO_MIN) newprio = PRIO_MIN;
		1352	if (newprio > PRIO_MAX) newprio = PRIO_MAX;
		1353
		1354	coro->prio = newprio;
		1355	}
		1356	}
		1357	OUTPUT:
		1358	RETVAL
		1359
		1360	SV *
		1361	ready (SV *self)
		1362	PROTOTYPE: $
		1363	CODE:
		1364	RETVAL = boolSV (api_ready (self));
		1365	OUTPUT:
		1366	RETVAL
		1367
		1368	SV *
		1369	is_ready (SV *self)
		1370	PROTOTYPE: $
		1371	CODE:
		1372	RETVAL = boolSV (api_is_ready (self));
		1373	OUTPUT:
		1374	RETVAL
		1375
		1376	int
1090	nready(...)	1377	nready (...)
1091	PROTOTYPE:	1378	PROTOTYPE:
1092	CODE:	1379	CODE:
1093	RETVAL = coro_nready;	1380	RETVAL = coro_nready;
1094	OUTPUT:	1381	OUTPUT:
1095	RETVAL	1382	RETVAL
1096		1383
1097	void	1384	MODULE = Coro::State PACKAGE = Coro::AIO
1098	schedule(...)	1385
1099	PROTOTYPE:	1386	SV *
		1387	_get_state ()
1100	CODE:	1388	CODE:
1101	api_schedule ();
1102
1103	void
1104	cede(...)
1105	PROTOTYPE:
1106	CODE:
1107	api_cede ();
1108
1109	# and these are hacks
1110	SV *
1111	_aio_get_state ()
1112	CODE:
1113	{	1389	{
1114	struct {	1390	struct io_state *data;
1115	int errorno;
1116	int laststype;
1117	int laststatval;
1118	Stat_t statcache;
1119	} data;
1120		1391
		1392	RETVAL = newSV (sizeof (struct io_state));
		1393	data = (struct io_state *)SvPVX (RETVAL);
		1394	SvCUR_set (RETVAL, sizeof (struct io_state));
		1395	SvPOK_only (RETVAL);
		1396
1121	data.errorno = errno;	1397	data->errorno = errno;
1122	data.laststype = PL_laststype;	1398	data->laststype = PL_laststype;
1123	data.laststatval = PL_laststatval;	1399	data->laststatval = PL_laststatval;
1124	data.statcache = PL_statcache;	1400	data->statcache = PL_statcache;
1125
1126	RETVAL = newSVpvn ((char *)&data, sizeof data);
1127	}	1401	}
1128	OUTPUT:	1402	OUTPUT:
1129	RETVAL	1403	RETVAL
1130		1404
1131	void	1405	void
1132	_aio_set_state (char *data_)	1406	_set_state (char *data_)
1133	PROTOTYPE: $	1407	PROTOTYPE: $
1134	CODE:	1408	CODE:
1135	{	1409	{
1136	struct {	1410	struct io_state data = (void )data_;
1137	int errorno;
1138	int laststype;
1139	int laststatval;
1140	Stat_t statcache;
1141	} data = (void )data_;
1142		1411
1143	errno = data->errorno;	1412	errno = data->errorno;
1144	PL_laststype = data->laststype;	1413	PL_laststype = data->laststype;
1145	PL_laststatval = data->laststatval;	1414	PL_laststatval = data->laststatval;
1146	PL_statcache = data->statcache;	1415	PL_statcache = data->statcache;
1147	}	1416	}
		1417

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Comparing Coro/Coro/State.xs (file contents): Revision 1.78 by root, Wed Nov 1 01:21:21 2006 UTC vs. Revision 1.146 by root, Sat Mar 17 19:51:57 2007 UTC

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Comparing Coro/Coro/State.xs (file contents):
Revision 1.78 by root, Wed Nov 1 01:21:21 2006 UTC vs.
Revision 1.146 by root, Sat Mar 17 19:51:57 2007 UTC