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

Comparing Coro/Coro/State.xs (file contents):
Revision 1.49 by pcg, Sun Nov 23 03:34:13 2003 UTC vs.
Revision 1.143 by root, Wed Feb 28 11:43:03 2007 UTC

…		…
		1	#include "libcoro/coro.c"
		2
1	#include "EXTERN.h"	3	#include "EXTERN.h"
2	#include "perl.h"	4	#include "perl.h"
3	#include "XSUB.h"	5	#include "XSUB.h"
4		6
5	#include "patchlevel.h"	7	#include "patchlevel.h"
6		8
7	#if PATCHLEVEL < 6	9	#include <stdio.h>
		10	#include <errno.h>
		11	#include <assert.h>
		12
		13	#ifdef HAVE_MMAP
		14	# include <unistd.h>
		15	# include <sys/mman.h>
		16	# ifndef MAP_ANONYMOUS
		17	# ifdef MAP_ANON
		18	# define MAP_ANONYMOUS MAP_ANON
		19	# else
		20	# undef HAVE_MMAP
		21	# endif
		22	# endif
		23	# include <limits.h>
		24	# ifndef PAGESIZE
		25	# define PAGESIZE pagesize
		26	# define BOOT_PAGESIZE pagesize = sysconf (_SC_PAGESIZE)
		27	static long pagesize;
		28	# else
		29	# define BOOT_PAGESIZE (void)0
		30	# endif
		31	#else
		32	# define PAGESIZE 0
		33	# define BOOT_PAGESIZE (void)0
		34	#endif
		35
		36	#if CORO_USE_VALGRIND
		37	# include <valgrind/valgrind.h>
		38	# define REGISTER_STACK(cctx,start,end) (cctx)->valgrind_id = VALGRIND_STACK_REGISTER ((start), (end))
		39	#else
		40	# define REGISTER_STACK(cctx,start,end)
		41	#endif
		42
		43	/* the maximum number of idle cctx that will be pooled */
		44	#define MAX_IDLE_CCTX 8
		45
		46	#define PERL_VERSION_ATLEAST(a,b,c) \
		47	(PERL_REVISION > (a) \
		48	\|\| (PERL_REVISION == (a) \
		49	&& (PERL_VERSION > (b) \
		50	\|\| (PERL_VERSION == (b) && PERLSUBVERSION >= (c)))))
		51
		52	#if !PERL_VERSION_ATLEAST (5,6,0)
8	# ifndef PL_ppaddr	53	# ifndef PL_ppaddr
9	# define PL_ppaddr ppaddr	54	# define PL_ppaddr ppaddr
10	# endif	55	# endif
11	# ifndef call_sv	56	# ifndef call_sv
12	# define call_sv perl_call_sv	57	# define call_sv perl_call_sv
23	# ifndef IS_PADCONST	68	# ifndef IS_PADCONST
24	# define IS_PADCONST(v) 0	69	# define IS_PADCONST(v) 0
25	# endif	70	# endif
26	#endif	71	#endif
27		72
28	#include "libcoro/coro.c"	73	/* 5.8.7 */
29		74	#ifndef SvRV_set
30	#include <signal.h>	75	# define SvRV_set(s,v) SvRV(s) = (v)
31
32	#ifdef HAVE_MMAP
33	# include <unistd.h>
34	# include <sys/mman.h>
35	# ifndef MAP_ANONYMOUS
36	# ifdef MAP_ANON
37	# define MAP_ANONYMOUS MAP_ANON
38	# else
39	# undef HAVE_MMAP
40	# endif
41	# endif	76	#endif
42	#endif
43		77
44	#define MAY_FLUSH /* increases codesize and is rarely used */	78	#if !__i386 && !__x86_64 && !__powerpc && !__m68k && !__alpha && !__mips && !__sparc64
		79	# undef CORO_STACKGUARD
		80	#endif
45		81
46	#define SUB_INIT "Coro::State::initialize"	82	#ifndef CORO_STACKGUARD
47	#define UCORO_STATE "_coro_state"	83	# define CORO_STACKGUARD 0
		84	#endif
		85
		86	/* prefer perl internal functions over our own? */
		87	#ifndef CORO_PREFER_PERL_FUNCTIONS
		88	# define CORO_PREFER_PERL_FUNCTIONS 0
		89	#endif
48		90
49	/* The next macro should declare a variable stacklevel that contains and approximation	91	/* The next macro should declare a variable stacklevel that contains and approximation
50	* to the current C stack pointer. Its property is that it changes with each call	92	* to the current C stack pointer. Its property is that it changes with each call
51	* and should be unique. */	93	* and should be unique. */
		94	#define dSTACKLEVEL int stacklevel
52	#define dSTACKLEVEL void *stacklevel = &stacklevel	95	#define STACKLEVEL ((void *)&stacklevel)
53		96
54	#define IN_DESTRUCT (PL_main_cv == Nullcv)	97	#define IN_DESTRUCT (PL_main_cv == Nullcv)
55		98
56	#define labs(l) ((l) >= 0 ? (l) : -(l))	99	#if __GNUC__ >= 3
		100	# define attribute(x) __attribute__(x)
		101	# define BARRIER __asm__ __volatile__ ("" : : : "memory")
		102	#else
		103	# define attribute(x)
		104	# define BARRIER
		105	#endif
		106
		107	#define NOINLINE attribute ((noinline))
57		108
58	#include "CoroAPI.h"	109	#include "CoroAPI.h"
59		110
		111	#ifdef USE_ITHREADS
		112	static perl_mutex coro_mutex;
		113	# define LOCK do { MUTEX_LOCK (&coro_mutex); } while (0)
		114	# define UNLOCK do { MUTEX_UNLOCK (&coro_mutex); } while (0)
		115	#else
		116	# define LOCK (void)0
		117	# define UNLOCK (void)0
		118	#endif
		119
		120	/* helper storage struct for Coro::AIO */
		121	struct io_state
		122	{
		123	int errorno;
		124	I32 laststype;
		125	int laststatval;
		126	Stat_t statcache;
		127	};
		128
60	static struct CoroAPI coroapi;	129	static struct CoroAPI coroapi;
		130	static AV main_mainstack; / used to differentiate between $main and others */
		131	static HV coro_state_stash, coro_stash;
		132	static SV coro_mortal; / will be freed after next transfer */
61		133
62	/* this is actually not only the c stack but also c registers etc... */	134	static struct coro_cctx *cctx_first;
		135	static int cctx_count, cctx_idle;
		136
		137	/* this is a structure representing a c-level coroutine */
63	typedef struct {	138	typedef struct coro_cctx {
64	int refcnt; /* pointer reference counter */	139	struct coro_cctx *next;
65	int usecnt; /* shared by how many coroutines */
66	int gencnt; /* generation counter */
67		140
		141	/* the stack */
		142	void *sptr;
		143	ssize_t ssize; /* positive == mmap, otherwise malloc */
		144
		145	/* cpu state */
		146	void idle_sp; / sp of top-level transfer/schedule/cede call */
		147	JMPENV idle_te; / same as idle_sp, but for top_env, TODO: remove once stable */
		148	JMPENV *top_env;
68	coro_context cctx;	149	coro_context cctx;
69		150
70	void *sptr;	151	int inuse;
71	long ssize; /* positive == mmap, otherwise malloc */
72	} coro_stack;
73		152
		153	#if CORO_USE_VALGRIND
		154	int valgrind_id;
		155	#endif
		156	} coro_cctx;
		157
		158	enum {
		159	CF_RUNNING = 0x0001, /* coroutine is running */
		160	CF_READY = 0x0002, /* coroutine is ready */
		161	CF_NEW = 0x0004, /* has never been switched to */
		162	CF_DESTROYED = 0x0008, /* coroutine data has been freed */
		163	};
		164
		165	/* this is a structure representing a perl-level coroutine */
74	struct coro {	166	struct coro {
75	/* the top-level JMPENV for each coroutine, needed to catch dies. */	167	/* the c coroutine allocated to this perl coroutine, if any */
76	JMPENV start_env;	168	coro_cctx *cctx;
77
78	/* the optional C context */
79	coro_stack *stack;
80	void *cursp;
81	int gencnt;
82
83	/* optionally saved, might be zero */
84	AV *defav;
85	SV *defsv;
86	SV *errsv;
87
88	/* saved global state not related to stacks */
89	U8 dowarn;
90	I32 in_eval;
91
92	/* the stacks and related info (callchain etc..) */
93	PERL_SI *curstackinfo;
94	AV *curstack;
95	AV *mainstack;
96	SV **stack_sp;
97	OP *op;
98	SV **curpad;
99	AV *comppad;
100	SV **stack_base;
101	SV **stack_max;
102	SV **tmps_stack;
103	I32 tmps_floor;
104	I32 tmps_ix;
105	I32 tmps_max;
106	I32 *markstack;
107	I32 *markstack_ptr;
108	I32 *markstack_max;
109	I32 *scopestack;
110	I32 scopestack_ix;
111	I32 scopestack_max;
112	ANY *savestack;
113	I32 savestack_ix;
114	I32 savestack_max;
115	OP **retstack;
116	I32 retstack_ix;
117	I32 retstack_max;
118	COP *curcop;
119	JMPENV *top_env;
120		169
121	/* data associated with this coroutine (initial args) */	170	/* data associated with this coroutine (initial args) */
122	AV *args;	171	AV *args;
		172	int refcnt;
		173	int save; /* CORO_SAVE flags */
		174	int flags; /* CF_ flags */
		175
		176	/* optionally saved, might be zero */
		177	AV defav; / @_ */
		178	SV defsv; / $_ */
		179	SV errsv; / $@ */
		180	SV irssv; / $/ */
		181	SV irssv_sv; / real $/ cache */
		182
		183	#define VAR(name,type) type name;
		184	# include "state.h"
		185	#undef VAR
		186
		187	/* coro process data */
		188	int prio;
123	};	189	};
124		190
125	typedef struct coro *Coro__State;	191	typedef struct coro *Coro__State;
126	typedef struct coro *Coro__State_or_hashref;	192	typedef struct coro *Coro__State_or_hashref;
127		193
128	static AV main_mainstack; / used to differentiate between $main and others */	194	/ Coro ******************************************************************/
129	static HV *coro_state_stash;
130	static SV *ucoro_state_sv;
131	static U32 ucoro_state_hash;
132	static HV *padlist_cache;
133	static SV coro_mortal; / will be freed after next transfer */
134		195
135	/* mostly copied from op.c:cv_clone2 */	196	#define PRIO_MAX 3
136	STATIC AV *	197	#define PRIO_HIGH 1
137	clone_padlist (AV *protopadlist)	198	#define PRIO_NORMAL 0
		199	#define PRIO_LOW -1
		200	#define PRIO_IDLE -3
		201	#define PRIO_MIN -4
		202
		203	/* for Coro.pm */
		204	static SV *coro_current;
		205	static AV *coro_ready [PRIO_MAX-PRIO_MIN+1];
		206	static int coro_nready;
		207
		208	/ lowlevel stuff ********************************************************/
		209
		210	static AV *
		211	coro_clone_padlist (CV *cv)
138	{	212	{
139	AV *av;	213	AV *padlist = CvPADLIST (cv);
140	I32 ix;
141	AV protopad_name = (AV ) * av_fetch (protopadlist, 0, FALSE);
142	AV protopad = (AV ) * av_fetch (protopadlist, 1, FALSE);
143	SV **pname = AvARRAY (protopad_name);
144	SV **ppad = AvARRAY (protopad);
145	I32 fname = AvFILLp (protopad_name);
146	I32 fpad = AvFILLp (protopad);
147	AV newpadlist, newpad_name, *newpad;	214	AV newpadlist, newpad;
148	SV **npad;
149
150	newpad_name = newAV ();
151	for (ix = fname; ix >= 0; ix--)
152	av_store (newpad_name, ix, SvREFCNT_inc (pname[ix]));
153
154	newpad = newAV ();
155	av_fill (newpad, AvFILLp (protopad));
156	npad = AvARRAY (newpad);
157		215
158	newpadlist = newAV ();	216	newpadlist = newAV ();
159	AvREAL_off (newpadlist);	217	AvREAL_off (newpadlist);
160	av_store (newpadlist, 0, (SV *) newpad_name);	218	#if PERL_VERSION_ATLEAST (5,9,0)
		219	Perl_pad_push (aTHX_ padlist, AvFILLp (padlist) + 1);
		220	#else
		221	Perl_pad_push (aTHX_ padlist, AvFILLp (padlist) + 1, 1);
		222	#endif
		223	newpad = (AV *)AvARRAY (padlist)[AvFILLp (padlist)];
		224	--AvFILLp (padlist);
		225
		226	av_store (newpadlist, 0, SvREFCNT_inc (*av_fetch (padlist, 0, FALSE)));
161	av_store (newpadlist, 1, (SV *) newpad);	227	av_store (newpadlist, 1, (SV *)newpad);
162		228
163	av = newAV (); /* will be @_ */	229	return newpadlist;
164	av_extend (av, 0);	230	}
165	av_store (newpad, 0, (SV *) av);
166	AvFLAGS (av) = AVf_REIFY;
167		231
168	for (ix = fpad; ix > 0; ix--)	232	static void
		233	free_padlist (AV *padlist)
		234	{
		235	/* may be during global destruction */
		236	if (SvREFCNT (padlist))
169	{	237	{
170	SV *namesv = (ix <= fname) ? pname[ix] : Nullsv;	238	I32 i = AvFILLp (padlist);
171	if (namesv && namesv != &PL_sv_undef)	239	while (i >= 0)
172	{	240	{
173	char name = SvPVX (namesv); / XXX */	241	SV **svp = av_fetch (padlist, i--, FALSE);
174	if (SvFLAGS (namesv) & SVf_FAKE \|\| *name == '&')	242	if (svp)
175	{ /* lexical from outside? */
176	npad[ix] = SvREFCNT_inc (ppad[ix]);
177	}	243	{
178	else
179	{ /* our own lexical */
180	SV *sv;	244	SV *sv;
181	if (*name == '&')	245	while (&PL_sv_undef != (sv = av_pop ((AV )svp)))
182	sv = SvREFCNT_inc (ppad[ix]);	246	SvREFCNT_dec (sv);
183	else if (*name == '@')	247
184	sv = (SV *) newAV ();	248	SvREFCNT_dec (*svp);
185	else if (*name == '%')
186	sv = (SV *) newHV ();
187	else
188	sv = NEWSV (0, 0);
189	#ifdef SvPADBUSY
190	if (!SvPADBUSY (sv))
191	#endif
192	SvPADMY_on (sv);
193	npad[ix] = sv;
194	}	249	}
195	}	250	}
196	else if (IS_PADGV (ppad[ix]) \|\| IS_PADCONST (ppad[ix]))
197	{
198	npad[ix] = SvREFCNT_inc (ppad[ix]);
199	}
200	else
201	{
202	SV *sv = NEWSV (0, 0);
203	SvPADTMP_on (sv);
204	npad[ix] = sv;
205	}
206	}
207		251
208	#if 0 /* return -ENOTUNDERSTOOD */
209	/* Now that vars are all in place, clone nested closures. */
210
211	for (ix = fpad; ix > 0; ix--) {
212	SV* namesv = (ix <= fname) ? pname[ix] : Nullsv;
213	if (namesv
214	&& namesv != &PL_sv_undef
215	&& !(SvFLAGS(namesv) & SVf_FAKE)
216	&& *SvPVX(namesv) == '&'
217	&& CvCLONE(ppad[ix]))
218	{
219	CV kid = cv_clone((CV)ppad[ix]);
220	SvREFCNT_dec(ppad[ix]);
221	CvCLONE_on(kid);
222	SvPADMY_on(kid);
223	npad[ix] = (SV*)kid;
224	}
225	}
226	#endif
227
228	return newpadlist;
229	}
230
231	#ifdef MAY_FLUSH
232	STATIC void
233	free_padlist (AV *padlist)
234	{
235	/* may be during global destruction */
236	if (SvREFCNT(padlist))
237	{
238	I32 i = AvFILLp(padlist);
239	while (i >= 0)
240	{
241	SV **svp = av_fetch(padlist, i--, FALSE);
242	SV sv = svp ? svp : Nullsv;
243	if (sv)
244	SvREFCNT_dec(sv);
245	}
246
247	SvREFCNT_dec((SV*)padlist);	252	SvREFCNT_dec ((SV*)padlist);
248	}	253	}
249	}	254	}
250	#endif	255
		256	static int
		257	coro_cv_free (pTHX_ SV sv, MAGIC mg)
		258	{
		259	AV *padlist;
		260	AV av = (AV )mg->mg_obj;
		261
		262	/* casting is fun. */
		263	while (&PL_sv_undef != (SV )(padlist = (AV )av_pop (av)))
		264	free_padlist (padlist);
		265
		266	SvREFCNT_dec (av);
		267
		268	return 0;
		269	}
		270
		271	#define PERL_MAGIC_coro PERL_MAGIC_ext
		272
		273	static MGVTBL vtbl_coro = {0, 0, 0, 0, coro_cv_free};
		274
		275	#define CORO_MAGIC(cv) \
		276	SvMAGIC (cv) \
		277	? SvMAGIC (cv)->mg_type == PERL_MAGIC_coro \
		278	? SvMAGIC (cv) \
		279	: mg_find ((SV *)cv, PERL_MAGIC_coro) \
		280	: 0
251		281
252	/* the next two functions merely cache the padlists */	282	/* the next two functions merely cache the padlists */
253	STATIC void	283	static void
254	get_padlist (CV *cv)	284	get_padlist (CV *cv)
255	{	285	{
256	SV *he = hv_fetch (padlist_cache, (void )&cv, sizeof (CV *), 0);	286	MAGIC *mg = CORO_MAGIC (cv);
		287	AV *av;
257		288
258	if (he && AvFILLp ((AV )he) >= 0)	289	if (mg && AvFILLp ((av = (AV *)mg->mg_obj)) >= 0)
259	CvPADLIST (cv) = (AV )av_pop ((AV )*he);	290	CvPADLIST (cv) = (AV *)AvARRAY (av)[AvFILLp (av)--];
260	else	291	else
		292	{
		293	#if CORO_PREFER_PERL_FUNCTIONS
		294	/* this is probably cleaner, but also slower? */
		295	CV *cp = Perl_cv_clone (cv);
		296	CvPADLIST (cv) = CvPADLIST (cp);
		297	CvPADLIST (cp) = 0;
		298	SvREFCNT_dec (cp);
		299	#else
261	CvPADLIST (cv) = clone_padlist (CvPADLIST (cv));	300	CvPADLIST (cv) = coro_clone_padlist (cv);
		301	#endif
		302	}
262	}	303	}
263		304
264	STATIC void	305	static void
265	put_padlist (CV *cv)	306	put_padlist (CV *cv)
266	{	307	{
267	SV *he = hv_fetch (padlist_cache, (void )&cv, sizeof (CV *), 1);	308	MAGIC *mg = CORO_MAGIC (cv);
		309	AV *av;
268		310
269	if (SvTYPE (*he) != SVt_PVAV)	311	if (!mg)
270	{
271	SvREFCNT_dec (*he);
272	he = (SV )newAV ();
273	}	312	{
274		313	sv_magic ((SV *)cv, 0, PERL_MAGIC_coro, 0, 0);
275	av_push ((AV )he, (SV *)CvPADLIST (cv));	314	mg = mg_find ((SV *)cv, PERL_MAGIC_coro);
276	}	315	mg->mg_virtual = &vtbl_coro;
277		316	mg->mg_obj = (SV *)newAV ();
278	#ifdef MAY_FLUSH
279	STATIC void
280	flush_padlist_cache ()
281	{
282	HV *hv = padlist_cache;
283	padlist_cache = newHV ();
284
285	if (hv_iterinit (hv))
286	{	317	}
287	HE *he;
288	AV *padlist;
289		318
290	while (!!(he = hv_iternext (hv)))	319	av = (AV *)mg->mg_obj;
291	{
292	AV av = (AV )HeVAL(he);
293		320
294	/* casting is fun. */	321	if (AvFILLp (av) >= AvMAX (av))
295	while (&PL_sv_undef != (SV )(padlist = (AV )av_pop (av)))	322	av_extend (av, AvMAX (av) + 1);
296	free_padlist (padlist);
297	}
298	}
299		323
300	SvREFCNT_dec (hv);	324	AvARRAY (av)[++AvFILLp (av)] = (SV *)CvPADLIST (cv);
301	}	325	}
302	#endif	326
		327	/ load & save, init *****************************************************/
303		328
304	#define SB do {	329	#define SB do {
305	#define SE } while (0)	330	#define SE } while (0)
306		331
307	#define LOAD(state) load_state(aTHX_ (state));
308	#define SAVE(state,flags) save_state(aTHX_ (state),(flags));
309
310	#define REPLACE_SV(sv,val) SB SvREFCNT_dec(sv); (sv) = (val); (val) = 0; SE	332	#define REPLACE_SV(sv,val) SB SvREFCNT_dec (sv); (sv) = (val); (val) = 0; SE
311		333
312	static void	334	static void
313	load_state(pTHX_ Coro__State c)	335	load_perl (Coro__State c)
314	{	336	{
315	PL_dowarn = c->dowarn;	337	#define VAR(name,type) PL_ ## name = c->name;
316	PL_in_eval = c->in_eval;	338	# include "state.h"
317		339	#undef VAR
318	PL_curstackinfo = c->curstackinfo;
319	PL_curstack = c->curstack;
320	PL_mainstack = c->mainstack;
321	PL_stack_sp = c->stack_sp;
322	PL_op = c->op;
323	PL_curpad = c->curpad;
324	PL_comppad = c->comppad;
325	PL_stack_base = c->stack_base;
326	PL_stack_max = c->stack_max;
327	PL_tmps_stack = c->tmps_stack;
328	PL_tmps_floor = c->tmps_floor;
329	PL_tmps_ix = c->tmps_ix;
330	PL_tmps_max = c->tmps_max;
331	PL_markstack = c->markstack;
332	PL_markstack_ptr = c->markstack_ptr;
333	PL_markstack_max = c->markstack_max;
334	PL_scopestack = c->scopestack;
335	PL_scopestack_ix = c->scopestack_ix;
336	PL_scopestack_max = c->scopestack_max;
337	PL_savestack = c->savestack;
338	PL_savestack_ix = c->savestack_ix;
339	PL_savestack_max = c->savestack_max;
340	PL_retstack = c->retstack;
341	PL_retstack_ix = c->retstack_ix;
342	PL_retstack_max = c->retstack_max;
343	PL_curcop = c->curcop;
344	PL_top_env = c->top_env;
345		340
346	if (c->defav) REPLACE_SV (GvAV (PL_defgv), c->defav);	341	if (c->defav) REPLACE_SV (GvAV (PL_defgv), c->defav);
347	if (c->defsv) REPLACE_SV (DEFSV , c->defsv);	342	if (c->defsv) REPLACE_SV (DEFSV , c->defsv);
348	if (c->errsv) REPLACE_SV (ERRSV , c->errsv);	343	if (c->errsv) REPLACE_SV (ERRSV , c->errsv);
		344	if (c->irssv)
		345	{
		346	if (c->irssv == PL_rs \|\| sv_eq (PL_rs, c->irssv))
		347	SvREFCNT_dec (c->irssv);
		348	else
		349	{
		350	REPLACE_SV (PL_rs, c->irssv);
		351	if (!c->irssv_sv) c->irssv_sv = get_sv ("/", 0);
		352	sv_setsv (c->irssv_sv, PL_rs);
		353	}
		354	}
349		355
350	{	356	{
351	dSP;	357	dSP;
352	CV *cv;	358	CV *cv;
353		359
354	/* now do the ugly restore mess */	360	/* now do the ugly restore mess */
355	while ((cv = (CV *)POPs))	361	while ((cv = (CV *)POPs))
356	{	362	{
357	AV padlist = (AV )POPs;
358
359	if (padlist)
360	{
361	put_padlist (cv); /* mark this padlist as available */	363	put_padlist (cv); /* mark this padlist as available */
362	CvPADLIST(cv) = padlist;	364	CvDEPTH (cv) = PTR2IV (POPs);
363	#ifdef USE_THREADS	365	CvPADLIST (cv) = (AV *)POPs;
364	/CvOWNER(cv) = (struct perl_thread )POPs;*/
365	#endif
366	}
367
368	++CvDEPTH(cv);
369	}	366	}
370		367
371	PUTBACK;	368	PUTBACK;
372	}	369	}
		370	assert (!PL_comppad \|\| AvARRAY (PL_comppad));//D
373	}	371	}
374		372
375	static void	373	static void
376	save_state(pTHX_ Coro__State c, int flags)	374	save_perl (Coro__State c)
377	{	375	{
		376	assert (!PL_comppad \|\| AvARRAY (PL_comppad));//D
378	{	377	{
379	dSP;	378	dSP;
380	I32 cxix = cxstack_ix;	379	I32 cxix = cxstack_ix;
381	PERL_CONTEXT *ccstk = cxstack;	380	PERL_CONTEXT *ccstk = cxstack;
382	PERL_SI *top_si = PL_curstackinfo;	381	PERL_SI *top_si = PL_curstackinfo;
…		…
384	/*	383	/*
385	* the worst thing you can imagine happens first - we have to save	384	* the worst thing you can imagine happens first - we have to save
386	* (and reinitialize) all cv's in the whole callchain :(	385	* (and reinitialize) all cv's in the whole callchain :(
387	*/	386	*/
388		387
		388	EXTEND (SP, 3 + 1);
389	PUSHs (Nullsv);	389	PUSHs (Nullsv);
390	/* this loop was inspired by pp_caller */	390	/* this loop was inspired by pp_caller */
391	for (;;)	391	for (;;)
392	{	392	{
393	while (cxix >= 0)	393	while (cxix >= 0)
394	{	394	{
395	PERL_CONTEXT *cx = &ccstk[cxix--];	395	PERL_CONTEXT *cx = &ccstk[cxix--];
396		396
397	if (CxTYPE(cx) == CXt_SUB)	397	if (CxTYPE (cx) == CXt_SUB)
398	{	398	{
399	CV *cv = cx->blk_sub.cv;	399	CV *cv = cx->blk_sub.cv;
		400
400	if (CvDEPTH(cv))	401	if (CvDEPTH (cv))
401	{	402	{
402	#ifdef USE_THREADS
403	/XPUSHs ((SV )CvOWNER(cv));*/
404	/CvOWNER(cv) = 0;/
405	/error must unlock this cv etc.. etc.../
406	#endif
407	EXTEND (SP, CvDEPTH(cv)*2);	403	EXTEND (SP, 3);
408
409	while (--CvDEPTH(cv))
410	{
411	/* this tells the restore code to increment CvDEPTH */
412	PUSHs (Nullsv);
413	PUSHs ((SV *)cv);
414	}
415
416	PUSHs ((SV *)CvPADLIST(cv));	404	PUSHs ((SV *)CvPADLIST (cv));
		405	PUSHs (INT2PTR (SV *, CvDEPTH (cv)));
417	PUSHs ((SV *)cv);	406	PUSHs ((SV *)cv);
418		407
		408	CvDEPTH (cv) = 0;
419	get_padlist (cv); /* this is a monster */	409	get_padlist (cv);
420	}	410	}
421	}	411	}
422	#ifdef CXt_FORMAT
423	else if (CxTYPE(cx) == CXt_FORMAT)
424	{
425	/* I never used formats, so how should I know how these are implemented? */
426	/* my bold guess is as a simple, plain sub... */
427	croak ("CXt_FORMAT not yet handled. Don't switch coroutines from within formats");
428	}
429	#endif
430	}	412	}
431		413
432	if (top_si->si_type == PERLSI_MAIN)	414	if (top_si->si_type == PERLSI_MAIN)
433	break;	415	break;
434		416
…		…
438	}	420	}
439		421
440	PUTBACK;	422	PUTBACK;
441	}	423	}
442		424
443	c->defav = flags & TRANSFER_SAVE_DEFAV ? (AV *)SvREFCNT_inc (GvAV (PL_defgv)) : 0;	425	c->defav = c->save & CORO_SAVE_DEFAV ? (AV *)SvREFCNT_inc (GvAV (PL_defgv)) : 0;
444	c->defsv = flags & TRANSFER_SAVE_DEFSV ? SvREFCNT_inc (DEFSV) : 0;	426	c->defsv = c->save & CORO_SAVE_DEFSV ? SvREFCNT_inc (DEFSV) : 0;
445	c->errsv = flags & TRANSFER_SAVE_ERRSV ? SvREFCNT_inc (ERRSV) : 0;	427	c->errsv = c->save & CORO_SAVE_ERRSV ? SvREFCNT_inc (ERRSV) : 0;
		428	c->irssv = c->save & CORO_SAVE_IRSSV ? SvREFCNT_inc (PL_rs) : 0;
446		429
447	c->dowarn = PL_dowarn;	430	#define VAR(name,type)c->name = PL_ ## name;
448	c->in_eval = PL_in_eval;	431	# include "state.h"
449		432	#undef VAR
450	c->curstackinfo = PL_curstackinfo;
451	c->curstack = PL_curstack;
452	c->mainstack = PL_mainstack;
453	c->stack_sp = PL_stack_sp;
454	c->op = PL_op;
455	c->curpad = PL_curpad;
456	c->comppad = PL_comppad;
457	c->stack_base = PL_stack_base;
458	c->stack_max = PL_stack_max;
459	c->tmps_stack = PL_tmps_stack;
460	c->tmps_floor = PL_tmps_floor;
461	c->tmps_ix = PL_tmps_ix;
462	c->tmps_max = PL_tmps_max;
463	c->markstack = PL_markstack;
464	c->markstack_ptr = PL_markstack_ptr;
465	c->markstack_max = PL_markstack_max;
466	c->scopestack = PL_scopestack;
467	c->scopestack_ix = PL_scopestack_ix;
468	c->scopestack_max = PL_scopestack_max;
469	c->savestack = PL_savestack;
470	c->savestack_ix = PL_savestack_ix;
471	c->savestack_max = PL_savestack_max;
472	c->retstack = PL_retstack;
473	c->retstack_ix = PL_retstack_ix;
474	c->retstack_max = PL_retstack_max;
475	c->curcop = PL_curcop;
476	c->top_env = PL_top_env;
477	}	433	}
478		434
479	/*	435	/*
480	* allocate various perl stacks. This is an exact copy	436	* allocate various perl stacks. This is an exact copy
481	* of perl.c:init_stacks, except that it uses less memory	437	* of perl.c:init_stacks, except that it uses less memory
482	* on the assumption that coroutines do not usually need	438	* on the (sometimes correct) assumption that coroutines do
483	* a lot of stackspace.	439	* not usually need a lot of stackspace.
484	*/	440	*/
485	STATIC void	441	#if CORO_PREFER_PERL_FUNCTIONS
		442	# define coro_init_stacks init_stacks
		443	#else
		444	static void
486	coro_init_stacks (pTHX)	445	coro_init_stacks ()
487	{	446	{
488	PL_curstackinfo = new_stackinfo(96, 1024/sizeof(PERL_CONTEXT) - 1);	447	PL_curstackinfo = new_stackinfo(128, 1024/sizeof(PERL_CONTEXT));
489	PL_curstackinfo->si_type = PERLSI_MAIN;	448	PL_curstackinfo->si_type = PERLSI_MAIN;
490	PL_curstack = PL_curstackinfo->si_stack;	449	PL_curstack = PL_curstackinfo->si_stack;
491	PL_mainstack = PL_curstack; /* remember in case we switch stacks */	450	PL_mainstack = PL_curstack; /* remember in case we switch stacks */
492		451
493	PL_stack_base = AvARRAY(PL_curstack);	452	PL_stack_base = AvARRAY(PL_curstack);
494	PL_stack_sp = PL_stack_base;	453	PL_stack_sp = PL_stack_base;
495	PL_stack_max = PL_stack_base + AvMAX(PL_curstack);	454	PL_stack_max = PL_stack_base + AvMAX(PL_curstack);
496		455
497	New(50,PL_tmps_stack,96,SV*);	456	New(50,PL_tmps_stack,128,SV*);
498	PL_tmps_floor = -1;	457	PL_tmps_floor = -1;
499	PL_tmps_ix = -1;	458	PL_tmps_ix = -1;
500	PL_tmps_max = 96;	459	PL_tmps_max = 128;
501		460
502	New(54,PL_markstack,16,I32);	461	New(54,PL_markstack,32,I32);
503	PL_markstack_ptr = PL_markstack;	462	PL_markstack_ptr = PL_markstack;
504	PL_markstack_max = PL_markstack + 16;	463	PL_markstack_max = PL_markstack + 32;
505		464
506	#ifdef SET_MARK_OFFSET	465	#ifdef SET_MARK_OFFSET
507	SET_MARK_OFFSET;	466	SET_MARK_OFFSET;
508	#endif	467	#endif
509		468
510	New(54,PL_scopestack,16,I32);	469	New(54,PL_scopestack,32,I32);
511	PL_scopestack_ix = 0;	470	PL_scopestack_ix = 0;
512	PL_scopestack_max = 16;	471	PL_scopestack_max = 32;
513		472
514	New(54,PL_savestack,96,ANY);	473	New(54,PL_savestack,64,ANY);
515	PL_savestack_ix = 0;	474	PL_savestack_ix = 0;
516	PL_savestack_max = 96;	475	PL_savestack_max = 64;
517		476
		477	#if !PERL_VERSION_ATLEAST (5,9,0)
518	New(54,PL_retstack,8,OP*);	478	New(54,PL_retstack,16,OP*);
519	PL_retstack_ix = 0;	479	PL_retstack_ix = 0;
520	PL_retstack_max = 8;	480	PL_retstack_max = 16;
		481	#endif
521	}	482	}
		483	#endif
522		484
523	/*	485	/*
524	* destroy the stacks, the callchain etc...	486	* destroy the stacks, the callchain etc...
525	*/	487	*/
526	STATIC void	488	static void
527	destroy_stacks(pTHX)	489	coro_destroy_stacks ()
528	{	490	{
529	if (!IN_DESTRUCT)	491	if (!IN_DESTRUCT)
530	{	492	{
531	/* is this ugly, I ask? */	493	/* restore all saved variables and stuff */
532	while (PL_scopestack_ix)	494	LEAVE_SCOPE (0);
533	LEAVE;	495	assert (PL_tmps_floor == -1);
534		496
535	/* sure it is, but more important: is it correct?? :/ */	497	/* free all temporaries */
536	while (PL_tmps_ix > PL_tmps_floor) /* should only ever be one iteration */
537	FREETMPS;	498	FREETMPS;
		499	assert (PL_tmps_ix == -1);
		500
		501	/* unwind all extra stacks */
		502	POPSTACK_TO (PL_mainstack);
		503
		504	/* unwind main stack */
		505	dounwind (-1);
538	}	506	}
539		507
540	while (PL_curstackinfo->si_next)	508	while (PL_curstackinfo->si_next)
541	PL_curstackinfo = PL_curstackinfo->si_next;	509	PL_curstackinfo = PL_curstackinfo->si_next;
542		510
543	while (PL_curstackinfo)	511	while (PL_curstackinfo)
544	{	512	{
545	PERL_SI *p = PL_curstackinfo->si_prev;	513	PERL_SI *p = PL_curstackinfo->si_prev;
546		514
547	{
548	dSP;
549	SWITCHSTACK (PL_curstack, PL_curstackinfo->si_stack);
550	PUTBACK; /* possibly superfluous */
551	}
552
553	if (!IN_DESTRUCT)	515	if (!IN_DESTRUCT)
554	{
555	dounwind(-1);
556	SvREFCNT_dec(PL_curstackinfo->si_stack);	516	SvREFCNT_dec (PL_curstackinfo->si_stack);
557	}
558		517
559	Safefree(PL_curstackinfo->si_cxstack);	518	Safefree (PL_curstackinfo->si_cxstack);
560	Safefree(PL_curstackinfo);	519	Safefree (PL_curstackinfo);
561	PL_curstackinfo = p;	520	PL_curstackinfo = p;
562	}	521	}
563		522
564	Safefree(PL_tmps_stack);	523	Safefree (PL_tmps_stack);
565	Safefree(PL_markstack);	524	Safefree (PL_markstack);
566	Safefree(PL_scopestack);	525	Safefree (PL_scopestack);
567	Safefree(PL_savestack);	526	Safefree (PL_savestack);
		527	#if !PERL_VERSION_ATLEAST (5,9,0)
568	Safefree(PL_retstack);	528	Safefree (PL_retstack);
569	}
570
571	static void
572	allocate_stack (Coro__State ctx, int alloc)
573	{
574	coro_stack *stack;
575
576	New (0, stack, 1, coro_stack);
577
578	stack->refcnt = 1;
579	stack->usecnt = 1;
580	stack->gencnt = ctx->gencnt = 0;
581	if (alloc)
582	{
583	#if HAVE_MMAP
584	stack->ssize = 128 * 1024 * sizeof (long); /* mmap should do allocate-on-write for us */
585	stack->sptr = mmap (0, stack->ssize, PROT_EXEC\|PROT_READ\|PROT_WRITE, MAP_PRIVATE\|MAP_ANONYMOUS, 0, 0);
586	if (stack->sptr == (void *)-1)
587	#endif	529	#endif
588	{
589	/FIXME//D//* reasonable stack size! */
590	stack->ssize = -4096 * sizeof (long);
591	New (0, stack->sptr, 4096, long);
592	}
593	}
594	else
595	stack->sptr = 0;
596
597	ctx->stack = stack;
598	}	530	}
599		531
600	static void	532	/ coroutine stack handling **********************************************/
601	deallocate_stack (Coro__State ctx)
602	{
603	coro_stack *stack = ctx->stack;
604		533
605	ctx->stack = 0;
606
607	if (stack)
608	{
609	if (!--stack->refcnt)
610	{
611	#ifdef HAVE_MMAP
612	if (stack->ssize > 0 && stack->sptr)
613	munmap (stack->sptr, stack->ssize);
614	else
615	#endif
616	Safefree (stack->sptr);
617
618	Safefree (stack);
619	}
620	else if (ctx->gencnt == stack->gencnt)
621	--stack->usecnt;
622	}
623	}
624
625	static void	534	static void
626	setup_coro (void *arg)	535	setup_coro (struct coro *coro)
627	{	536	{
628	/*	537	/*
629	* emulate part of the perl startup here.	538	* emulate part of the perl startup here.
630	*/	539	*/
		540
		541	coro_init_stacks ();
		542
		543	PL_curcop = &PL_compiling;
		544	PL_in_eval = EVAL_NULL;
		545	PL_comppad = 0;
		546	PL_curpm = 0;
		547	PL_localizing = 0;
		548	PL_dirty = 0;
		549	PL_restartop = 0;
		550
		551	{
		552	dSP;
		553	LOGOP myop;
		554
		555	SvREFCNT_dec (GvAV (PL_defgv));
		556	GvAV (PL_defgv) = coro->args; coro->args = 0;
		557
		558	Zero (&myop, 1, LOGOP);
		559	myop.op_next = Nullop;
		560	myop.op_flags = OPf_WANT_VOID;
		561
		562	PUSHMARK (SP);
		563	XPUSHs ((SV *)get_cv ("Coro::State::_coro_init", FALSE));
		564	PUTBACK;
		565	PL_op = (OP *)&myop;
		566	PL_op = PL_ppaddr[OP_ENTERSUB](aTHX);
		567	SPAGAIN;
		568	}
		569
		570	ENTER; /* necessary e.g. for dounwind */
		571	}
		572
		573	static void
		574	free_coro_mortal ()
		575	{
		576	if (coro_mortal)
		577	{
		578	SvREFCNT_dec (coro_mortal);
		579	coro_mortal = 0;
		580	}
		581	}
		582
		583	/* inject a fake call to Coro::State::_cctx_init into the execution */
		584	static void NOINLINE
		585	prepare_cctx (coro_cctx *cctx)
		586	{
631	dSP;	587	dSP;
632	Coro__State ctx = (Coro__State)arg;	588	LOGOP myop;
633	SV sub_init = (SV)get_cv(SUB_INIT, FALSE);
634		589
635	coro_init_stacks (aTHX);	590	Zero (&myop, 1, LOGOP);
636	/PL_curcop = 0;/	591	myop.op_next = PL_op;
637	/PL_in_eval = PL_in_eval;/ /* inherit */	592	myop.op_flags = OPf_WANT_VOID \| OPf_STACKED;
638	SvREFCNT_dec (GvAV (PL_defgv));
639	GvAV (PL_defgv) = ctx->args; ctx->args = 0;
640		593
		594	PUSHMARK (SP);
		595	EXTEND (SP, 2);
		596	PUSHs (sv_2mortal (newSViv (PTR2IV (cctx))));
		597	PUSHs ((SV *)get_cv ("Coro::State::_cctx_init", FALSE));
		598	PUTBACK;
		599	PL_op = (OP *)&myop;
		600	PL_op = PL_ppaddr[OP_ENTERSUB](aTHX);
641	SPAGAIN;	601	SPAGAIN;
642
643	if (ctx->stack)
644	{
645	ctx->cursp = 0;
646
647	PUSHMARK(SP);
648	PUTBACK;
649	(void) call_sv (sub_init, G_VOID\|G_NOARGS\|G_EVAL);
650
651	if (SvTRUE (ERRSV))
652	croak (NULL);
653	else
654	croak ("FATAL: CCTXT coroutine returned!");
655	}
656	else
657	{
658	UNOP myop;
659
660	PL_op = (OP *)&myop;
661
662	Zero(&myop, 1, UNOP);
663	myop.op_next = Nullop;
664	myop.op_flags = OPf_WANT_VOID;
665
666	PUSHMARK(SP);
667	XPUSHs (sub_init);
668	/*
669	* the next line is slightly wrong, as PL_op->op_next
670	* is actually being executed so we skip the first op.
671	* that doesn't matter, though, since it is only
672	* pp_nextstate and we never return...
673	* ah yes, and I don't care anyways ;)
674	*/
675	PUTBACK;
676	PL_op = PL_ppaddr[OP_ENTERSUB](aTHX);
677	SPAGAIN;
678
679	ENTER; /* necessary e.g. for dounwind */
680	}
681	}	602	}
682		603
683	static void	604	static void
684	continue_coro (void *arg)	605	coro_run (void *arg)
685	{	606	{
		607	/* coro_run is the alternative tail of transfer(), so unlock here. */
		608	UNLOCK;
		609
686	/*	610	/*
687	* this is a _very_ stripped down perl interpreter ;)	611	* this is a _very_ stripped down perl interpreter ;)
688	*/	612	*/
689	Coro__State ctx = (Coro__State)arg;
690	JMPENV coro_start_env;
691
692	PL_top_env = &ctx->start_env;	613	PL_top_env = &PL_start_env;
693		614
694	ctx->cursp = 0;	615	/* inject call to cctx_init */
695	PL_op = PL_op->op_next;	616	prepare_cctx ((coro_cctx *)arg);
696	CALLRUNOPS(aTHX);
697		617
		618	/* somebody will hit me for both perl_run and PL_restartop */
		619	PL_restartop = PL_op;
		620	perl_run (PL_curinterp);
		621
		622	fputs ("FATAL: C coroutine fell over the edge of the world, aborting. Did you call exit in a coroutine?\n", stderr);
698	abort ();	623	abort ();
699	}	624	}
700		625
701	STATIC void	626	static coro_cctx *
		627	cctx_new ()
		628	{
		629	coro_cctx *cctx;
		630
		631	++cctx_count;
		632
		633	Newz (0, cctx, 1, coro_cctx);
		634
		635	#if HAVE_MMAP
		636
		637	cctx->ssize = ((CORO_STACKSIZE * sizeof (long) + PAGESIZE - 1) / PAGESIZE + CORO_STACKGUARD) * PAGESIZE;
		638	/* mmap supposedly does allocate-on-write for us */
		639	cctx->sptr = mmap (0, cctx->ssize, PROT_EXEC\|PROT_READ\|PROT_WRITE, MAP_PRIVATE\|MAP_ANONYMOUS, 0, 0);
		640
		641	if (cctx->sptr != (void *)-1)
		642	{
		643	# if CORO_STACKGUARD
		644	mprotect (cctx->sptr, CORO_STACKGUARD * PAGESIZE, PROT_NONE);
		645	# endif
		646	REGISTER_STACK (
		647	cctx,
		648	CORO_STACKGUARD * PAGESIZE + (char *)cctx->sptr,
		649	cctx->ssize + (char *)cctx->sptr
		650	);
		651
		652	coro_create (&cctx->cctx, coro_run, (void *)cctx, cctx->sptr, cctx->ssize);
		653	}
		654	else
		655	#endif
		656	{
		657	cctx->ssize = -CORO_STACKSIZE * (long)sizeof (long);
		658	New (0, cctx->sptr, CORO_STACKSIZE, long);
		659
		660	if (!cctx->sptr)
		661	{
		662	perror ("FATAL: unable to allocate stack for coroutine");
		663	_exit (EXIT_FAILURE);
		664	}
		665
		666	REGISTER_STACK (
		667	cctx,
		668	(char *)cctx->sptr,
		669	(char *)cctx->sptr - cctx->ssize
		670	);
		671
		672	coro_create (&cctx->cctx, coro_run, (void *)cctx, cctx->sptr, -cctx->ssize);
		673	}
		674
		675	return cctx;
		676	}
		677
		678	static void
		679	cctx_destroy (coro_cctx *cctx)
		680	{
		681	if (!cctx)
		682	return;
		683
		684	--cctx_count;
		685
		686	#if CORO_USE_VALGRIND
		687	VALGRIND_STACK_DEREGISTER (cctx->valgrind_id);
		688	#endif
		689
		690	#if HAVE_MMAP
		691	if (cctx->ssize > 0)
		692	munmap (cctx->sptr, cctx->ssize);
		693	else
		694	#endif
		695	Safefree (cctx->sptr);
		696
		697	Safefree (cctx);
		698	}
		699
		700	static coro_cctx *
		701	cctx_get ()
		702	{
		703	coro_cctx *cctx;
		704
		705	if (cctx_first)
		706	{
		707	cctx = cctx_first;
		708	cctx_first = cctx->next;
		709	--cctx_idle;
		710	}
		711	else
		712	{
		713	cctx = cctx_new ();
		714	PL_op = PL_op->op_next;
		715	}
		716
		717	return cctx;
		718	}
		719
		720	static void
		721	cctx_put (coro_cctx *cctx)
		722	{
		723	/* free another cctx if overlimit */
		724	if (cctx_idle >= MAX_IDLE_CCTX)
		725	{
		726	coro_cctx *first = cctx_first;
		727	cctx_first = first->next;
		728	--cctx_idle;
		729
		730	assert (!first->inuse);
		731	cctx_destroy (first);
		732	}
		733
		734	++cctx_idle;
		735	cctx->next = cctx_first;
		736	cctx_first = cctx;
		737	}
		738
		739	/ coroutine switching ***************************************************/
		740
		741	/* never call directly, always through the coro_state_transfer global variable */
		742	static void NOINLINE
702	transfer(pTHX_ struct coro prev, struct coro next, int flags)	743	transfer (struct coro prev, struct coro next)
703	{	744	{
704	dSTACKLEVEL;	745	dSTACKLEVEL;
705	static struct coro *xnext;
706		746
		747	/* sometimes transfer is only called to set idle_sp */
		748	if (!next)
		749	{
		750	((coro_cctx *)prev)->idle_sp = STACKLEVEL;
		751	assert (((coro_cctx )prev)->idle_te = PL_top_env); / just for the side-effect when asserts are enabled */
		752	}
707	if (prev != next)	753	else if (prev != next)
708	{	754	{
709	xnext = next;	755	coro_cctx *prev__cctx;
710		756
711	if (next->mainstack)	757	if (prev->flags & CF_NEW)
712	{	758	{
713	SAVE (prev, flags);	759	/* create a new empty context */
714	LOAD (next);	760	Newz (0, prev->cctx, 1, coro_cctx);
715		761	prev->cctx->inuse = 1;
716	/* mark this state as in-use */	762	prev->flags &= ~CF_NEW;
717	next->mainstack = 0;	763	prev->flags \|= CF_RUNNING;
718	next->tmps_ix = -2;
719
720	/* stacklevel changed? if yes, grab the stack for us! */
721	if (flags & TRANSFER_SAVE_CCTXT)
722	{
723	if (!prev->stack)
724	allocate_stack (prev, 0);
725	else if (prev->cursp != stacklevel
726	&& prev->stack->usecnt > 1)
727	{
728	prev->gencnt = ++prev->stack->gencnt;
729	prev->stack->usecnt = 1;
730	}
731
732	/* has our stack been invalidated? */
733	if (next->stack && next->stack->gencnt != next->gencnt)
734	{
735	deallocate_stack (next);
736	allocate_stack (next, 1);
737	coro_create (&(next->stack->cctx),
738	continue_coro, (void *)next,
739	next->stack->sptr, labs (next->stack->ssize));
740	}
741
742	coro_transfer (&(prev->stack->cctx), &(next->stack->cctx));
743	/* don't add any code here */
744	}
745
746	}	764	}
747	else if (next->tmps_ix == -2)	765
748	croak ("tried to transfer to running coroutine");	766	/TODO: must not croak here /
		767	if (!prev->flags & CF_RUNNING)
		768	croak ("Coro::State::transfer called with non-running prev Coro::State, but can only transfer from running states");
		769
		770	if (next->flags & CF_RUNNING)
		771	croak ("Coro::State::transfer called with running next Coro::State, but can only transfer to inactive states");
		772
		773	if (next->flags & CF_DESTROYED)
		774	croak ("Coro::State::transfer called with destroyed next Coro::State, but can only transfer to inactive states");
		775
		776	prev->flags &= ~CF_RUNNING;
		777	next->flags \|= CF_RUNNING;
		778
		779	LOCK;
		780
		781	if (next->flags & CF_NEW)
		782	{
		783	/* need to start coroutine */
		784	next->flags &= ~CF_NEW;
		785	/* first get rid of the old state */
		786	save_perl (prev);
		787	/* setup coroutine call */
		788	setup_coro (next);
		789	/* need a new stack */
		790	assert (!next->cctx);
		791	}
749	else	792	else
750	{	793	{
751	SAVE (prev, -1); /* first get rid of the old state */	794	/* coroutine already started */
752		795	save_perl (prev);
753	if (flags & TRANSFER_SAVE_CCTXT)	796	load_perl (next);
754	{
755	if (!prev->stack)
756	allocate_stack (prev, 0);
757
758	if (prev->stack->sptr && flags & TRANSFER_LAZY_STACK)
759	{
760	PL_top_env = &next->start_env;
761
762	setup_coro (next);
763
764	prev->stack->refcnt++;
765	prev->stack->usecnt++;
766	next->stack = prev->stack;
767	next->gencnt = prev->gencnt;
768	}
769	else
770	{
771	assert (!next->stack);
772	allocate_stack (next, 1);
773	coro_create (&(next->stack->cctx),
774	setup_coro, (void *)next,
775	next->stack->sptr, labs (next->stack->ssize));
776	coro_transfer (&(prev->stack->cctx), &(next->stack->cctx));
777	/* don't add any code here */
778	}
779	}
780	else
781	setup_coro (next);
782	}	797	}
783		798
784	/*	799	prev__cctx = prev->cctx;
785	* xnext is now either prev or next, depending on wether	800
786	* we switched the c stack or not. that's why I use a global	801	/* possibly "free" the cctx */
787	* variable, that should become thread-specific at one point.	802	if (prev__cctx->idle_sp == STACKLEVEL)
788	*/	803	{
789	xnext->cursp = stacklevel;	804	/* I assume that STACKLEVEL is a stronger indicator than PL_top_env changes */
790	}	805	assert (("ERROR: current top_env must equal previous top_env", PL_top_env == prev__cctx->idle_te));
791		806
792	if (coro_mortal)	807	prev->cctx = 0;
		808
		809	cctx_put (prev__cctx);
		810	prev__cctx->inuse = 0;
		811	}
		812
		813	if (!next->cctx)
		814	{
		815	next->cctx = cctx_get ();
		816	assert (!next->cctx->inuse);
		817	next->cctx->inuse = 1;
		818	}
		819
		820	if (prev__cctx != next->cctx)
		821	{
		822	prev__cctx->top_env = PL_top_env;
		823	PL_top_env = next->cctx->top_env;
		824	coro_transfer (&prev__cctx->cctx, &next->cctx->cctx);
		825	}
		826
		827	free_coro_mortal ();
		828	UNLOCK;
793	{	829	}
794	SvREFCNT_dec (coro_mortal);	830	}
795	coro_mortal = 0;	831
		832	struct transfer_args
		833	{
		834	struct coro prev, next;
		835	};
		836
		837	#define TRANSFER(ta) transfer ((ta).prev, (ta).next)
		838
		839	/ high level stuff ******************************************************/
		840
		841	static int
		842	coro_state_destroy (struct coro *coro)
		843	{
		844	if (coro->flags & CF_DESTROYED)
		845	return 0;
		846
		847	coro->flags \|= CF_DESTROYED;
		848
		849	if (coro->flags & CF_READY)
796	}	850	{
797	}	851	/* reduce nready, as destroying a ready coro effectively unreadies it */
		852	/* alternative: look through all ready queues and remove the coro */
		853	LOCK;
		854	--coro_nready;
		855	UNLOCK;
		856	}
		857	else
		858	coro->flags \|= CF_READY; /* make sure it is NOT put into the readyqueue */
798		859
799	#define SV_CORO(sv,func) \	860	if (coro->mainstack && coro->mainstack != main_mainstack)
800	do { \	861	{
801	if (SvROK (sv)) \	862	struct coro temp;
802	sv = SvRV (sv); \
803	\
804	if (SvTYPE(sv) == SVt_PVHV) \
805	{ \
806	HE he = hv_fetch_ent((HV )sv, ucoro_state_sv, 0, ucoro_state_hash); \
807	\
808	if (!he) \
809	croak ("%s() -- %s is a hashref but lacks the " UCORO_STATE " key", func, # sv); \
810	\
811	(sv) = SvRV (HeVAL(he)); \
812	} \
813	\
814	/* must also be changed inside Coro::Cont::yield */ \
815	if (!SvOBJECT(sv) \|\| SvSTASH(sv) != coro_state_stash) \
816	croak ("%s() -- %s is not (and contains not) a Coro::State object", func, # sv); \
817	\
818	} while(0)
819		863
820	#define SvSTATE(sv) (struct coro *)SvIV (sv)	864	assert (!(coro->flags & CF_RUNNING));
821		865
		866	Zero (&temp, 1, struct coro);
		867	temp.save = CORO_SAVE_ALL;
		868
		869	if (coro->flags & CF_RUNNING)
		870	croak ("FATAL: tried to destroy currently running coroutine");
		871
		872	save_perl (&temp);
		873	load_perl (coro);
		874
		875	coro_destroy_stacks ();
		876
		877	load_perl (&temp); /* this will get rid of defsv etc.. */
		878
		879	coro->mainstack = 0;
		880	}
		881
		882	cctx_destroy (coro->cctx);
		883	SvREFCNT_dec (coro->args);
		884
		885	return 1;
		886	}
		887
822	static void	888	static int
		889	coro_state_free (pTHX_ SV sv, MAGIC mg)
		890	{
		891	struct coro coro = (struct coro )mg->mg_ptr;
		892	mg->mg_ptr = 0;
		893
		894	if (--coro->refcnt < 0)
		895	{
		896	coro_state_destroy (coro);
		897	Safefree (coro);
		898	}
		899
		900	return 0;
		901	}
		902
		903	static int
		904	coro_state_dup (pTHX_ MAGIC mg, CLONE_PARAMS params)
		905	{
		906	struct coro coro = (struct coro )mg->mg_ptr;
		907
		908	++coro->refcnt;
		909
		910	return 0;
		911	}
		912
		913	static MGVTBL coro_state_vtbl = {
		914	0, 0, 0, 0,
		915	coro_state_free,
		916	0,
		917	#ifdef MGf_DUP
		918	coro_state_dup,
		919	#else
		920	# define MGf_DUP 0
		921	#endif
		922	};
		923
		924	static struct coro *
		925	SvSTATE (SV *coro)
		926	{
		927	HV *stash;
		928	MAGIC *mg;
		929
		930	if (SvROK (coro))
		931	coro = SvRV (coro);
		932
		933	stash = SvSTASH (coro);
		934	if (stash != coro_stash && stash != coro_state_stash)
		935	{
		936	/* very slow, but rare, check */
		937	if (!sv_derived_from (sv_2mortal (newRV_inc (coro)), "Coro::State"))
		938	croak ("Coro::State object required");
		939	}
		940
		941	mg = SvMAGIC (coro);
		942	assert (mg->mg_type == PERL_MAGIC_ext);
		943	return (struct coro *)mg->mg_ptr;
		944	}
		945
		946	static void
		947	prepare_transfer (struct transfer_args ta, SV prev_sv, SV *next_sv)
		948	{
		949	ta->prev = SvSTATE (prev_sv);
		950	ta->next = SvSTATE (next_sv);
		951	}
		952
		953	static void
823	api_transfer(pTHX_ SV prev, SV next, int flags)	954	api_transfer (SV prev_sv, SV next_sv)
824	{	955	{
825	SV_CORO (prev, "Coro::transfer");	956	struct transfer_args ta;
826	SV_CORO (next, "Coro::transfer");
827		957
828	transfer(aTHX_ SvSTATE(prev), SvSTATE(next), flags);	958	prepare_transfer (&ta, prev_sv, next_sv);
		959	TRANSFER (ta);
		960	}
		961
		962	static int
		963	api_save (SV *coro_sv, int new_save)
		964	{
		965	struct coro *coro = SvSTATE (coro_sv);
		966	int old_save = coro->save;
		967
		968	if (new_save >= 0)
		969	coro->save = new_save;
		970
		971	return old_save;
829	}	972	}
830		973
831	/ Coro ******************************************************************/	974	/ Coro ******************************************************************/
832		975
833	#define PRIO_MAX 3
834	#define PRIO_HIGH 1
835	#define PRIO_NORMAL 0
836	#define PRIO_LOW -1
837	#define PRIO_IDLE -3
838	#define PRIO_MIN -4
839
840	/* for Coro.pm */
841	static GV coro_current, coro_idle;
842	static AV *coro_ready[PRIO_MAX-PRIO_MIN+1];
843	static int coro_nready;
844
845	static void	976	static void
846	coro_enq (SV *sv)	977	coro_enq (SV *coro_sv)
847	{	978	{
848	if (SvTYPE (sv) == SVt_PVHV)
849	{
850	SV *xprio = hv_fetch ((HV )sv, "prio", 4, 0);
851	int prio = xprio ? SvIV (*xprio) : PRIO_NORMAL;
852
853	prio = prio > PRIO_MAX ? PRIO_MAX
854	: prio < PRIO_MIN ? PRIO_MIN
855	: prio;
856
857	av_push (coro_ready [prio - PRIO_MIN], sv);	979	av_push (coro_ready [SvSTATE (coro_sv)->prio - PRIO_MIN], coro_sv);
858	coro_nready++;
859
860	return;
861	}
862
863	croak ("Coro::ready tried to enqueue something that is not a coroutine");
864	}	980	}
865		981
866	static SV *	982	static SV *
867	coro_deq (int min_prio)	983	coro_deq (int min_prio)
868	{	984	{
…		…
871	min_prio -= PRIO_MIN;	987	min_prio -= PRIO_MIN;
872	if (min_prio < 0)	988	if (min_prio < 0)
873	min_prio = 0;	989	min_prio = 0;
874		990
875	for (prio = PRIO_MAX - PRIO_MIN + 1; --prio >= min_prio; )	991	for (prio = PRIO_MAX - PRIO_MIN + 1; --prio >= min_prio; )
876	if (av_len (coro_ready[prio]) >= 0)	992	if (AvFILLp (coro_ready [prio]) >= 0)
877	{
878	coro_nready--;
879	return av_shift (coro_ready[prio]);	993	return av_shift (coro_ready [prio]);
880	}
881		994
882	return 0;	995	return 0;
883	}	996	}
884		997
885	static void	998	static int
886	api_ready (SV *coro)	999	api_ready (SV *coro_sv)
887	{	1000	{
		1001	struct coro *coro;
		1002
888	if (SvROK (coro))	1003	if (SvROK (coro_sv))
889	coro = SvRV (coro);	1004	coro_sv = SvRV (coro_sv);
890		1005
		1006	coro = SvSTATE (coro_sv);
		1007
		1008	if (coro->flags & CF_READY)
		1009	return 0;
		1010
		1011	coro->flags \|= CF_READY;
		1012
		1013	LOCK;
891	coro_enq (SvREFCNT_inc (coro));	1014	coro_enq (SvREFCNT_inc (coro_sv));
		1015	++coro_nready;
		1016	UNLOCK;
		1017
		1018	return 1;
		1019	}
		1020
		1021	static int
		1022	api_is_ready (SV *coro_sv)
		1023	{
		1024	return !!(SvSTATE (coro_sv)->flags & CF_READY);
		1025	}
		1026
		1027	static void
		1028	prepare_schedule (struct transfer_args *ta)
		1029	{
		1030	SV prev_sv, next_sv;
		1031
		1032	for (;;)
		1033	{
		1034	LOCK;
		1035	next_sv = coro_deq (PRIO_MIN);
		1036
		1037	/* nothing to schedule: call the idle handler */
		1038	if (!next_sv)
		1039	{
		1040	dSP;
		1041	UNLOCK;
		1042
		1043	ENTER;
		1044	SAVETMPS;
		1045
		1046	PUSHMARK (SP);
		1047	PUTBACK;
		1048	call_sv (get_sv ("Coro::idle", FALSE), G_DISCARD);
		1049
		1050	FREETMPS;
		1051	LEAVE;
		1052	continue;
		1053	}
		1054
		1055	ta->next = SvSTATE (next_sv);
		1056
		1057	/* cannot transfer to destroyed coros, skip and look for next */
		1058	if (ta->next->flags & CF_DESTROYED)
		1059	{
		1060	UNLOCK;
		1061	SvREFCNT_dec (next_sv);
		1062	/* coro_nready is already taken care of by destroy */
		1063	continue;
		1064	}
		1065
		1066	--coro_nready;
		1067	UNLOCK;
		1068	break;
		1069	}
		1070
		1071	/* free this only after the transfer */
		1072	prev_sv = SvRV (coro_current);
		1073	SvRV_set (coro_current, next_sv);
		1074	ta->prev = SvSTATE (prev_sv);
		1075
		1076	assert (ta->next->flags & CF_READY);
		1077	ta->next->flags &= ~CF_READY;
		1078
		1079	LOCK;
		1080	free_coro_mortal ();
		1081	coro_mortal = prev_sv;
		1082	UNLOCK;
		1083	}
		1084
		1085	static void
		1086	prepare_cede (struct transfer_args *ta)
		1087	{
		1088	api_ready (coro_current);
		1089	prepare_schedule (ta);
		1090	}
		1091
		1092	static int
		1093	prepare_cede_notself (struct transfer_args *ta)
		1094	{
		1095	if (coro_nready)
		1096	{
		1097	SV *prev = SvRV (coro_current);
		1098	prepare_schedule (ta);
		1099	api_ready (prev);
		1100	return 1;
		1101	}
		1102	else
		1103	return 0;
892	}	1104	}
893		1105
894	static void	1106	static void
895	api_schedule (void)	1107	api_schedule (void)
896	{	1108	{
897	SV prev, next;	1109	struct transfer_args ta;
898		1110
899	prev = SvRV (GvSV (coro_current));	1111	prepare_schedule (&ta);
900	next = coro_deq (PRIO_MIN);	1112	TRANSFER (ta);
901
902	if (!next)
903	next = SvREFCNT_inc (SvRV (GvSV (coro_idle)));
904
905	/* free this only after the transfer */
906	coro_mortal = prev;
907	SV_CORO (prev, "Coro::schedule");
908
909	SvRV (GvSV (coro_current)) = next;
910
911	SV_CORO (next, "Coro::schedule");
912
913	transfer (aTHX_ SvSTATE (prev), SvSTATE (next),
914	TRANSFER_SAVE_ALL \| TRANSFER_LAZY_STACK);
915	}	1113	}
916		1114
917	static void	1115	static int
918	api_cede (void)	1116	api_cede (void)
919	{	1117	{
920	coro_enq (SvREFCNT_inc (SvRV (GvSV (coro_current))));	1118	struct transfer_args ta;
921		1119
922	api_schedule ();	1120	prepare_cede (&ta);
		1121
		1122	if (ta.prev != ta.next)
		1123	{
		1124	TRANSFER (ta);
		1125	return 1;
		1126	}
		1127	else
		1128	return 0;
		1129	}
		1130
		1131	static int
		1132	api_cede_notself (void)
		1133	{
		1134	struct transfer_args ta;
		1135
		1136	if (prepare_cede_notself (&ta))
		1137	{
		1138	TRANSFER (ta);
		1139	return 1;
		1140	}
		1141	else
		1142	return 0;
923	}	1143	}
924		1144
925	MODULE = Coro::State PACKAGE = Coro::State	1145	MODULE = Coro::State PACKAGE = Coro::State
926		1146
927	PROTOTYPES: ENABLE	1147	PROTOTYPES: DISABLE
928		1148
929	BOOT:	1149	BOOT:
930	{ /* {} necessary for stoopid perl-5.6.x */	1150	{
931	ucoro_state_sv = newSVpv (UCORO_STATE, sizeof(UCORO_STATE) - 1);	1151	#ifdef USE_ITHREADS
932	PERL_HASH(ucoro_state_hash, UCORO_STATE, sizeof(UCORO_STATE) - 1);	1152	MUTEX_INIT (&coro_mutex);
		1153	#endif
		1154	BOOT_PAGESIZE;
		1155
933	coro_state_stash = gv_stashpv ("Coro::State", TRUE);	1156	coro_state_stash = gv_stashpv ("Coro::State", TRUE);
934		1157
935	newCONSTSUB (coro_state_stash, "SAVE_DEFAV", newSViv (TRANSFER_SAVE_DEFAV));	1158	newCONSTSUB (coro_state_stash, "SAVE_DEFAV", newSViv (CORO_SAVE_DEFAV));
936	newCONSTSUB (coro_state_stash, "SAVE_DEFSV", newSViv (TRANSFER_SAVE_DEFSV));	1159	newCONSTSUB (coro_state_stash, "SAVE_DEFSV", newSViv (CORO_SAVE_DEFSV));
937	newCONSTSUB (coro_state_stash, "SAVE_ERRSV", newSViv (TRANSFER_SAVE_ERRSV));	1160	newCONSTSUB (coro_state_stash, "SAVE_ERRSV", newSViv (CORO_SAVE_ERRSV));
		1161	newCONSTSUB (coro_state_stash, "SAVE_IRSSV", newSViv (CORO_SAVE_IRSSV));
938	newCONSTSUB (coro_state_stash, "SAVE_CCTXT", newSViv (TRANSFER_SAVE_CCTXT));	1162	newCONSTSUB (coro_state_stash, "SAVE_ALL", newSViv (CORO_SAVE_ALL));
939
940	if (!padlist_cache)
941	padlist_cache = newHV ();
942		1163
943	main_mainstack = PL_mainstack;	1164	main_mainstack = PL_mainstack;
944		1165
945	coroapi.ver = CORO_API_VERSION;	1166	coroapi.ver = CORO_API_VERSION;
946	coroapi.transfer = api_transfer;	1167	coroapi.transfer = api_transfer;
947	}
948		1168
949	Coro::State	1169	assert (("PRIO_NORMAL must be 0", !PRIO_NORMAL));
950	_newprocess(args)	1170	}
951	SV * args	1171
952	PROTOTYPE: $	1172	SV *
		1173	new (char *klass, ...)
953	CODE:	1174	CODE:
954	Coro__State coro;	1175	{
		1176	struct coro *coro;
		1177	HV *hv;
		1178	int i;
955		1179
956	if (!SvROK (args) \|\| SvTYPE (SvRV (args)) != SVt_PVAV)
957	croak ("Coro::State::_newprocess expects an arrayref");
958
959	Newz (0, coro, 1, struct coro);	1180	Newz (0, coro, 1, struct coro);
		1181	coro->args = newAV ();
		1182	coro->save = CORO_SAVE_ALL;
		1183	coro->flags = CF_NEW;
960		1184
961	coro->args = (AV *)SvREFCNT_inc (SvRV (args));	1185	hv = newHV ();
962	coro->mainstack = 0; /* actual work is done inside transfer */	1186	sv_magicext ((SV )hv, 0, PERL_MAGIC_ext, &coro_state_vtbl, (char )coro, 0)->mg_flags \|= MGf_DUP;
963	coro->stack = 0;	1187	RETVAL = sv_bless (newRV_noinc ((SV *)hv), gv_stashpv (klass, 1));
964		1188
965	/* same as JMPENV_BOOTSTRAP */	1189	for (i = 1; i < items; i++)
966	/* we might be able to recycle start_env, but safe is safe */	1190	av_push (coro->args, newSVsv (ST (i)));
967	//Zero(&coro->start_env, 1, JMPENV);	1191	}
968	coro->start_env.je_ret = -1;
969	coro->start_env.je_mustcatch = TRUE;
970
971	RETVAL = coro;
972	OUTPUT:	1192	OUTPUT:
973	RETVAL	1193	RETVAL
974		1194
		1195	int
		1196	save (SV *coro, int new_save = -1)
		1197	CODE:
		1198	RETVAL = api_save (coro, new_save);
		1199	OUTPUT:
		1200	RETVAL
		1201
975	void	1202	void
976	transfer(prev, next, flags)	1203	_set_stacklevel (...)
977	SV *prev	1204	ALIAS:
978	SV *next	1205	Coro::State::transfer = 1
979	int flags	1206	Coro::schedule = 2
980	PROTOTYPE: @	1207	Coro::cede = 3
		1208	Coro::cede_notself = 4
981	CODE:	1209	CODE:
982	PUTBACK;	1210	{
983	SV_CORO (next, "Coro::transfer");	1211	struct transfer_args ta;
984	SV_CORO (prev, "Coro::transfer");	1212
985	transfer (aTHX_ SvSTATE (prev), SvSTATE (next), flags);	1213	switch (ix)
986	SPAGAIN;	1214	{
		1215	case 0:
		1216	ta.prev = (struct coro )INT2PTR (coro_cctx , SvIV (ST (0)));
		1217	ta.next = 0;
		1218	break;
		1219
		1220	case 1:
		1221	if (items != 2)
		1222	croak ("Coro::State::transfer (prev,next) expects two arguments, not %d", items);
		1223
		1224	prepare_transfer (&ta, ST (0), ST (1));
		1225	break;
		1226
		1227	case 2:
		1228	prepare_schedule (&ta);
		1229	break;
		1230
		1231	case 3:
		1232	prepare_cede (&ta);
		1233	break;
		1234
		1235	case 4:
		1236	if (!prepare_cede_notself (&ta))
		1237	XSRETURN_EMPTY;
		1238
		1239	break;
		1240	}
		1241
		1242	BARRIER;
		1243	TRANSFER (ta);
		1244
		1245	if (GIMME_V != G_VOID && ta.next != ta.prev)
		1246	XSRETURN_YES;
		1247	}
		1248
		1249	bool
		1250	_destroy (SV *coro_sv)
		1251	CODE:
		1252	RETVAL = coro_state_destroy (SvSTATE (coro_sv));
		1253	OUTPUT:
		1254	RETVAL
987		1255
988	void	1256	void
989	DESTROY(coro)
990	Coro::State coro
991	CODE:
992
993	if (coro->mainstack && coro->mainstack != main_mainstack)
994	{
995	struct coro temp;
996
997	PUTBACK;
998	SAVE(aTHX_ (&temp), TRANSFER_SAVE_ALL);
999	LOAD(aTHX_ coro);
1000	SPAGAIN;
1001
1002	destroy_stacks (aTHX);
1003
1004	LOAD((&temp)); /* this will get rid of defsv etc.. */
1005	SPAGAIN;
1006
1007	coro->mainstack = 0;
1008	}
1009
1010	deallocate_stack (coro);
1011	SvREFCNT_dec (coro->args);
1012	Safefree (coro);
1013
1014	void
1015	flush()
1016	CODE:
1017	#ifdef MAY_FLUSH
1018	flush_padlist_cache ();
1019	#endif
1020
1021	void
1022	_exit(code)	1257	_exit (code)
1023	int code	1258	int code
1024	PROTOTYPE: $	1259	PROTOTYPE: $
1025	CODE:	1260	CODE:
1026	#if defined(__GLIBC__) \|\| _POSIX_C_SOURCE
1027	_exit (code);	1261	_exit (code);
1028	#else
1029	signal (SIGTERM, SIG_DFL);
1030	raise (SIGTERM);
1031	exit (code);
1032	#endif
1033		1262
1034	MODULE = Coro::State PACKAGE = Coro::Cont	1263	int
		1264	cctx_count ()
		1265	CODE:
		1266	RETVAL = cctx_count;
		1267	OUTPUT:
		1268	RETVAL
1035		1269
1036	# this is slightly dirty (should expose a c-level api)	1270	int
1037		1271	cctx_idle ()
1038	void	1272	CODE:
1039	yield(...)	1273	RETVAL = cctx_idle;
1040	PROTOTYPE: @	1274	OUTPUT:
1041	CODE:	1275	RETVAL
1042	static SV *returnstk;
1043	SV *sv;
1044	AV *defav = GvAV (PL_defgv);
1045	struct coro prev, next;
1046
1047	if (!returnstk)
1048	returnstk = SvRV ((SV *)get_sv ("Coro::Cont::return", FALSE));
1049
1050	/* set up @_ -- ugly */
1051	av_clear (defav);
1052	av_fill (defav, items - 1);
1053	while (items--)
1054	av_store (defav, items, SvREFCNT_inc (ST(items)));
1055
1056	mg_get (returnstk); /* isn't documentation wrong for mg_get? */
1057	sv = av_pop ((AV *)SvRV (returnstk));
1058	prev = (struct coro )SvIV ((SV)SvRV (av_fetch ((AV )SvRV (sv), 0, 0)));
1059	next = (struct coro )SvIV ((SV)SvRV (av_fetch ((AV )SvRV (sv), 1, 0)));
1060	SvREFCNT_dec (sv);
1061
1062	transfer(aTHX_ prev, next, 0);
1063		1276
1064	MODULE = Coro::State PACKAGE = Coro	1277	MODULE = Coro::State PACKAGE = Coro
1065		1278
1066	# this is slightly dirty (should expose a c-level api)
1067
1068	BOOT:	1279	BOOT:
1069	{	1280	{
1070	int i;	1281	int i;
		1282
1071	HV *stash = gv_stashpv ("Coro", TRUE);	1283	coro_stash = gv_stashpv ("Coro", TRUE);
1072		1284
1073	newCONSTSUB (stash, "PRIO_MAX", newSViv (PRIO_MAX));	1285	newCONSTSUB (coro_stash, "PRIO_MAX", newSViv (PRIO_MAX));
1074	newCONSTSUB (stash, "PRIO_HIGH", newSViv (PRIO_HIGH));	1286	newCONSTSUB (coro_stash, "PRIO_HIGH", newSViv (PRIO_HIGH));
1075	newCONSTSUB (stash, "PRIO_NORMAL", newSViv (PRIO_NORMAL));	1287	newCONSTSUB (coro_stash, "PRIO_NORMAL", newSViv (PRIO_NORMAL));
1076	newCONSTSUB (stash, "PRIO_LOW", newSViv (PRIO_LOW));	1288	newCONSTSUB (coro_stash, "PRIO_LOW", newSViv (PRIO_LOW));
1077	newCONSTSUB (stash, "PRIO_IDLE", newSViv (PRIO_IDLE));	1289	newCONSTSUB (coro_stash, "PRIO_IDLE", newSViv (PRIO_IDLE));
1078	newCONSTSUB (stash, "PRIO_MIN", newSViv (PRIO_MIN));	1290	newCONSTSUB (coro_stash, "PRIO_MIN", newSViv (PRIO_MIN));
1079		1291
1080	coro_current = gv_fetchpv ("Coro::current", TRUE, SVt_PV);	1292	coro_current = get_sv ("Coro::current", FALSE);
1081	coro_idle = gv_fetchpv ("Coro::idle" , TRUE, SVt_PV);	1293	SvREADONLY_on (coro_current);
1082		1294
1083	for (i = PRIO_MAX - PRIO_MIN + 1; i--; )	1295	for (i = PRIO_MAX - PRIO_MIN + 1; i--; )
1084	coro_ready[i] = newAV ();	1296	coro_ready[i] = newAV ();
1085		1297
1086	{	1298	{
1087	SV *sv = perl_get_sv("Coro::API", 1);	1299	SV *sv = perl_get_sv("Coro::API", 1);
1088		1300
1089	coroapi.schedule = api_schedule;	1301	coroapi.schedule = api_schedule;
		1302	coroapi.save = api_save;
1090	coroapi.cede = api_cede;	1303	coroapi.cede = api_cede;
		1304	coroapi.cede_notself = api_cede_notself;
1091	coroapi.ready = api_ready;	1305	coroapi.ready = api_ready;
		1306	coroapi.is_ready = api_is_ready;
1092	coroapi.nready = &coro_nready;	1307	coroapi.nready = &coro_nready;
1093	coroapi.current = coro_current;	1308	coroapi.current = coro_current;
1094		1309
1095	GCoroAPI = &coroapi;	1310	GCoroAPI = &coroapi;
1096	sv_setiv(sv, (IV)&coroapi);	1311	sv_setiv (sv, (IV)&coroapi);
1097	SvREADONLY_on(sv);	1312	SvREADONLY_on (sv);
1098	}	1313	}
1099	}	1314	}
1100		1315
1101	void	1316	void
1102	ready(self)	1317	_set_current (SV *current)
1103	SV * self
1104	PROTOTYPE: $	1318	PROTOTYPE: $
1105	CODE:	1319	CODE:
1106	api_ready (self);	1320	SvREFCNT_dec (SvRV (coro_current));
		1321	SvRV_set (coro_current, SvREFCNT_inc (SvRV (current)));
1107		1322
1108	int	1323	int
		1324	prio (Coro::State coro, int newprio = 0)
		1325	ALIAS:
		1326	nice = 1
		1327	CODE:
		1328	{
		1329	RETVAL = coro->prio;
		1330
		1331	if (items > 1)
		1332	{
		1333	if (ix)
		1334	newprio = coro->prio - newprio;
		1335
		1336	if (newprio < PRIO_MIN) newprio = PRIO_MIN;
		1337	if (newprio > PRIO_MAX) newprio = PRIO_MAX;
		1338
		1339	coro->prio = newprio;
		1340	}
		1341	}
		1342	OUTPUT:
		1343	RETVAL
		1344
		1345	SV *
		1346	ready (SV *self)
		1347	PROTOTYPE: $
		1348	CODE:
		1349	RETVAL = boolSV (api_ready (self));
		1350	OUTPUT:
		1351	RETVAL
		1352
		1353	SV *
		1354	is_ready (SV *self)
		1355	PROTOTYPE: $
		1356	CODE:
		1357	RETVAL = boolSV (api_is_ready (self));
		1358	OUTPUT:
		1359	RETVAL
		1360
		1361	int
1109	nready(...)	1362	nready (...)
1110	PROTOTYPE:	1363	PROTOTYPE:
1111	CODE:	1364	CODE:
1112	RETVAL = coro_nready;	1365	RETVAL = coro_nready;
1113	OUTPUT:	1366	OUTPUT:
1114	RETVAL	1367	RETVAL
1115		1368
		1369	MODULE = Coro::State PACKAGE = Coro::AIO
		1370
		1371	SV *
		1372	_get_state ()
		1373	CODE:
		1374	{
		1375	struct io_state *data;
		1376
		1377	RETVAL = newSV (sizeof (struct io_state));
		1378	data = (struct io_state *)SvPVX (RETVAL);
		1379	SvCUR_set (RETVAL, sizeof (struct io_state));
		1380	SvPOK_only (RETVAL);
		1381
		1382	data->errorno = errno;
		1383	data->laststype = PL_laststype;
		1384	data->laststatval = PL_laststatval;
		1385	data->statcache = PL_statcache;
		1386	}
		1387	OUTPUT:
		1388	RETVAL
		1389
1116	void	1390	void
1117	schedule(...)	1391	_set_state (char *data_)
1118	PROTOTYPE:	1392	PROTOTYPE: $
1119	CODE:	1393	CODE:
1120	api_schedule ();	1394	{
		1395	struct io_state data = (void )data_;
1121		1396
1122	void	1397	errno = data->errorno;
1123	cede(...)	1398	PL_laststype = data->laststype;
1124	PROTOTYPE:	1399	PL_laststatval = data->laststatval;
1125	CODE:	1400	PL_statcache = data->statcache;
1126	api_cede ();	1401	}
1127		1402

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Comparing Coro/Coro/State.xs (file contents): Revision 1.49 by pcg, Sun Nov 23 03:34:13 2003 UTC vs. Revision 1.143 by root, Wed Feb 28 11:43:03 2007 UTC

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Comparing Coro/Coro/State.xs (file contents):
Revision 1.49 by pcg, Sun Nov 23 03:34:13 2003 UTC vs.
Revision 1.143 by root, Wed Feb 28 11:43:03 2007 UTC