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

Comparing Coro/Coro/State.xs (file contents):
Revision 1.102 by root, Mon Nov 27 01:28:03 2006 UTC vs.
Revision 1.147 by root, Mon Mar 19 15:50:48 2007 UTC

…		…
1	#include "libcoro/coro.c"	1	#include "libcoro/coro.c"
		2
		3	#define PERL_NO_GET_CONTEXT
2		4
3	#include "EXTERN.h"	5	#include "EXTERN.h"
4	#include "perl.h"	6	#include "perl.h"
5	#include "XSUB.h"	7	#include "XSUB.h"
6		8
7	#include "patchlevel.h"	9	#include "patchlevel.h"
		10
		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
8		47
9	#define PERL_VERSION_ATLEAST(a,b,c) \	48	#define PERL_VERSION_ATLEAST(a,b,c) \
10	(PERL_REVISION > (a) \	49	(PERL_REVISION > (a) \
11	\|\| (PERL_REVISION == (a) \	50	\|\| (PERL_REVISION == (a) \
12	&& (PERL_VERSION > (b) \	51	&& (PERL_VERSION > (b) \
31	# ifndef IS_PADCONST	70	# ifndef IS_PADCONST
32	# define IS_PADCONST(v) 0	71	# define IS_PADCONST(v) 0
33	# endif	72	# endif
34	#endif	73	#endif
35		74
36	#include <stdio.h>	75	/* 5.8.7 */
37	#include <errno.h>	76	#ifndef SvRV_set
		77	# define SvRV_set(s,v) SvRV(s) = (v)
		78	#endif
38		79
39	#if !__i386 && !__x86_64 && !__powerpc && !__m68k && !__alpha && !__mips && !__sparc64	80	#if !__i386 && !__x86_64 && !__powerpc && !__m68k && !__alpha && !__mips && !__sparc64
40	# undef STACKGUARD	81	# undef CORO_STACKGUARD
41	#endif
42
43	#ifndef STACKGUARD
44	# define STACKGUARD 0
45	#endif
46
47	#ifdef HAVE_MMAP
48	# include <unistd.h>
49	# include <sys/mman.h>
50	# ifndef MAP_ANONYMOUS
51	# ifdef MAP_ANON
52	# define MAP_ANONYMOUS MAP_ANON
53	# else
54	# undef HAVE_MMAP
55	# endif
56	# endif	82	#endif
57	# include <limits.h>	83
58	# ifndef PAGESIZE	84	#ifndef CORO_STACKGUARD
59	# define PAGESIZE pagesize	85	# define CORO_STACKGUARD 0
60	# define BOOT_PAGESIZE pagesize = sysconf (_SC_PAGESIZE)
61	static long pagesize;
62	# else
63	# define BOOT_PAGESIZE
64	# endif	86	#endif
		87
		88	/* prefer perl internal functions over our own? */
		89	#ifndef CORO_PREFER_PERL_FUNCTIONS
		90	# define CORO_PREFER_PERL_FUNCTIONS 0
65	#endif	91	#endif
66		92
67	/* 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
68	* 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
69	* and should be unique. */	95	* and should be unique. */
…		…
72		98
73	#define IN_DESTRUCT (PL_main_cv == Nullcv)	99	#define IN_DESTRUCT (PL_main_cv == Nullcv)
74		100
75	#if __GNUC__ >= 3	101	#if __GNUC__ >= 3
76	# define attribute(x) __attribute__(x)	102	# define attribute(x) __attribute__(x)
		103	# define BARRIER __asm__ __volatile__ ("" : : : "memory")
77	#else	104	#else
78	# define attribute(x)	105	# define attribute(x)
		106	# define BARRIER
79	#endif	107	#endif
80		108
81	#define NOINLINE attribute ((noinline))	109	#define NOINLINE attribute ((noinline))
82		110
83	#include "CoroAPI.h"	111	#include "CoroAPI.h"
84
85	#define TRANSFER_SET_STACKLEVEL 0x8bfbfbfb /* magic cookie */
86		112
87	#ifdef USE_ITHREADS	113	#ifdef USE_ITHREADS
88	static perl_mutex coro_mutex;	114	static perl_mutex coro_mutex;
89	# define LOCK do { MUTEX_LOCK (&coro_mutex); } while (0)	115	# define LOCK do { MUTEX_LOCK (&coro_mutex); } while (0)
90	# define UNLOCK do { MUTEX_UNLOCK (&coro_mutex); } while (0)	116	# define UNLOCK do { MUTEX_UNLOCK (&coro_mutex); } while (0)
91	#else	117	#else
92	# define LOCK (void)0	118	# define LOCK (void)0
93	# define UNLOCK (void)0	119	# define UNLOCK (void)0
94	#endif	120	#endif
95		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;
96	static struct CoroAPI coroapi;	132	static struct CoroAPI coroapi;
97	static AV main_mainstack; / used to differentiate between $main and others */	133	static AV main_mainstack; / used to differentiate between $main and others */
98	static HV coro_state_stash, coro_stash;	134	static HV coro_state_stash, coro_stash;
99	static SV coro_mortal; / will be freed after next transfer */	135	static SV coro_mortal; / will be freed after next transfer */
100		136
		137	static struct coro_cctx *cctx_first;
		138	static int cctx_count, cctx_idle;
		139
101	/* this is a structure representing a c-level coroutine */	140	/* this is a structure representing a c-level coroutine */
102	typedef struct coro_stack {	141	typedef struct coro_cctx {
103	struct coro_stack *next;	142	struct coro_cctx *next;
104		143
105	/* the stack */	144	/* the stack */
106	void *sptr;	145	void *sptr;
107	long ssize; /* positive == mmap, otherwise malloc */	146	size_t ssize;
108		147
109	/* cpu state */	148	/* cpu state */
110	void idle_sp; / sp of top-level transfer/schedule/cede call */	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 */
111	JMPENV *top_env;	151	JMPENV *top_env;
112	coro_context cctx;	152	coro_context cctx;
113	} coro_stack;	153
		154	#if CORO_USE_VALGRIND
		155	int valgrind_id;
		156	#endif
		157	char inuse, mapped;
		158	} coro_cctx;
		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	};
114		166
115	/* this is a structure representing a perl-level coroutine */	167	/* this is a structure representing a perl-level coroutine */
116	struct coro {	168	struct coro {
117	/* the c coroutine allocated to this perl coroutine, if any */	169	/* the c coroutine allocated to this perl coroutine, if any */
118	coro_stack *stack;	170	coro_cctx *cctx;
119		171
120	/* data associated with this coroutine (initial args) */	172	/* data associated with this coroutine (initial args) */
121	AV *args;	173	AV *args;
122	int refcnt;	174	int refcnt;
		175	int save; /* CORO_SAVE flags */
		176	int flags; /* CF_ flags */
123		177
124	/* optionally saved, might be zero */	178	/* optionally saved, might be zero */
125	AV *defav;	179	AV defav; / @_ */
126	SV *defsv;	180	SV defsv; / $_ */
127	SV *errsv;	181	SV errsv; / $@ */
		182	GV deffh; / default filehandle */
		183	SV irssv; / $/ */
		184	SV irssv_sv; / real $/ cache */
128		185
129	/* saved global state not related to stacks */	186	#define VAR(name,type) type name;
130	U8 dowarn;	187	# include "state.h"
131	I32 in_eval;	188	#undef VAR
132
133	/* the stacks and related info (callchain etc..) */
134	PERL_SI *curstackinfo;
135	AV *curstack;
136	AV *mainstack;
137	SV **stack_sp;
138	OP *op;
139	SV **curpad;
140	AV *comppad;
141	CV *compcv;
142	SV **stack_base;
143	SV **stack_max;
144	SV **tmps_stack;
145	I32 tmps_floor;
146	I32 tmps_ix;
147	I32 tmps_max;
148	I32 *markstack;
149	I32 *markstack_ptr;
150	I32 *markstack_max;
151	I32 *scopestack;
152	I32 scopestack_ix;
153	I32 scopestack_max;
154	ANY *savestack;
155	I32 savestack_ix;
156	I32 savestack_max;
157	OP **retstack;
158	I32 retstack_ix;
159	I32 retstack_max;
160	PMOP *curpm;
161	COP *curcop;
162		189
163	/* coro process data */	190	/* coro process data */
164	int prio;	191	int prio;
165	};	192	};
166		193
167	typedef struct coro *Coro__State;	194	typedef struct coro *Coro__State;
168	typedef struct coro *Coro__State_or_hashref;	195	typedef struct coro *Coro__State_or_hashref;
169		196
		197	/ Coro ******************************************************************/
		198
		199	#define PRIO_MAX 3
		200	#define PRIO_HIGH 1
		201	#define PRIO_NORMAL 0
		202	#define PRIO_LOW -1
		203	#define PRIO_IDLE -3
		204	#define PRIO_MIN -4
		205
		206	/* for Coro.pm */
		207	static SV *coro_current;
		208	static AV *coro_ready [PRIO_MAX-PRIO_MIN+1];
		209	static int coro_nready;
		210
		211	/ lowlevel stuff ********************************************************/
		212
170	static AV *	213	static AV *
171	coro_clone_padlist (CV *cv)	214	coro_clone_padlist (pTHX_ CV *cv)
172	{	215	{
173	AV *padlist = CvPADLIST (cv);	216	AV *padlist = CvPADLIST (cv);
174	AV newpadlist, newpad;	217	AV newpadlist, newpad;
175		218
176	newpadlist = newAV ();	219	newpadlist = newAV ();
…		…
188		231
189	return newpadlist;	232	return newpadlist;
190	}	233	}
191		234
192	static void	235	static void
193	free_padlist (AV *padlist)	236	free_padlist (pTHX_ AV *padlist)
194	{	237	{
195	/* may be during global destruction */	238	/* may be during global destruction */
196	if (SvREFCNT (padlist))	239	if (SvREFCNT (padlist))
197	{	240	{
198	I32 i = AvFILLp (padlist);	241	I32 i = AvFILLp (padlist);
…		…
219	AV *padlist;	262	AV *padlist;
220	AV av = (AV )mg->mg_obj;	263	AV av = (AV )mg->mg_obj;
221		264
222	/* casting is fun. */	265	/* casting is fun. */
223	while (&PL_sv_undef != (SV )(padlist = (AV )av_pop (av)))	266	while (&PL_sv_undef != (SV )(padlist = (AV )av_pop (av)))
224	free_padlist (padlist);	267	free_padlist (aTHX_ padlist);
225		268
226	SvREFCNT_dec (av);	269	SvREFCNT_dec (av);
227		270
228	return 0;	271	return 0;
229	}	272	}
230		273
231	#define PERL_MAGIC_coro PERL_MAGIC_ext	274	#define PERL_MAGIC_coro PERL_MAGIC_ext
232		275
233	static MGVTBL vtbl_coro = {0, 0, 0, 0, coro_cv_free};	276	static MGVTBL vtbl_coro = {0, 0, 0, 0, coro_cv_free};
234		277
		278	#define CORO_MAGIC(cv) \
		279	SvMAGIC (cv) \
		280	? SvMAGIC (cv)->mg_type == PERL_MAGIC_coro \
		281	? SvMAGIC (cv) \
		282	: mg_find ((SV *)cv, PERL_MAGIC_coro) \
		283	: 0
		284
235	/* the next two functions merely cache the padlists */	285	/* the next two functions merely cache the padlists */
236	static void	286	static void
237	get_padlist (CV *cv)	287	get_padlist (pTHX_ CV *cv)
238	{	288	{
239	MAGIC mg = mg_find ((SV )cv, PERL_MAGIC_coro);	289	MAGIC *mg = CORO_MAGIC (cv);
		290	AV *av;
240		291
241	if (mg && AvFILLp ((AV *)mg->mg_obj) >= 0)	292	if (mg && AvFILLp ((av = (AV *)mg->mg_obj)) >= 0)
242	CvPADLIST (cv) = (AV )av_pop ((AV )mg->mg_obj);	293	CvPADLIST (cv) = (AV *)AvARRAY (av)[AvFILLp (av)--];
243	else	294	else
244	{	295	{
245	#if 0	296	#if CORO_PREFER_PERL_FUNCTIONS
246	/* this is probably cleaner, but also slower? */	297	/* this is probably cleaner, but also slower? */
247	CV *cp = Perl_cv_clone (cv);	298	CV *cp = Perl_cv_clone (cv);
248	CvPADLIST (cv) = CvPADLIST (cp);	299	CvPADLIST (cv) = CvPADLIST (cp);
249	CvPADLIST (cp) = 0;	300	CvPADLIST (cp) = 0;
250	SvREFCNT_dec (cp);	301	SvREFCNT_dec (cp);
251	#else	302	#else
252	CvPADLIST (cv) = coro_clone_padlist (cv);	303	CvPADLIST (cv) = coro_clone_padlist (aTHX_ cv);
253	#endif	304	#endif
254	}	305	}
255	}	306	}
256		307
257	static void	308	static void
258	put_padlist (CV *cv)	309	put_padlist (pTHX_ CV *cv)
259	{	310	{
260	MAGIC mg = mg_find ((SV )cv, PERL_MAGIC_coro);	311	MAGIC *mg = CORO_MAGIC (cv);
		312	AV *av;
261		313
262	if (!mg)	314	if (!mg)
263	{	315	{
264	sv_magic ((SV *)cv, 0, PERL_MAGIC_coro, 0, 0);	316	sv_magic ((SV *)cv, 0, PERL_MAGIC_coro, 0, 0);
265	mg = mg_find ((SV *)cv, PERL_MAGIC_coro);	317	mg = mg_find ((SV *)cv, PERL_MAGIC_coro);
266	mg->mg_virtual = &vtbl_coro;	318	mg->mg_virtual = &vtbl_coro;
267	mg->mg_obj = (SV *)newAV ();	319	mg->mg_obj = (SV *)newAV ();
268	}	320	}
269		321
270	av_push ((AV )mg->mg_obj, (SV )CvPADLIST (cv));	322	av = (AV *)mg->mg_obj;
		323
		324	if (AvFILLp (av) >= AvMAX (av))
		325	av_extend (av, AvMAX (av) + 1);
		326
		327	AvARRAY (av)[++AvFILLp (av)] = (SV *)CvPADLIST (cv);
271	}	328	}
		329
		330	/ load & save, init *****************************************************/
272		331
273	#define SB do {	332	#define SB do {
274	#define SE } while (0)	333	#define SE } while (0)
275		334
276	#define LOAD(state) load_state((state));
277	#define SAVE(state,flags) save_state((state),(flags));
278
279	#define REPLACE_SV(sv,val) SB SvREFCNT_dec(sv); (sv) = (val); (val) = 0; SE	335	#define REPLACE_SV(sv,val) SB SvREFCNT_dec (sv); (sv) = (val); (val) = 0; SE
280		336
281	static void	337	static void
282	load_state(Coro__State c)	338	load_perl (pTHX_ Coro__State c)
283	{	339	{
284	PL_dowarn = c->dowarn;	340	#define VAR(name,type) PL_ ## name = c->name;
285	PL_in_eval = c->in_eval;	341	# include "state.h"
286		342	#undef VAR
287	PL_curstackinfo = c->curstackinfo;
288	PL_curstack = c->curstack;
289	PL_mainstack = c->mainstack;
290	PL_stack_sp = c->stack_sp;
291	PL_op = c->op;
292	PL_curpad = c->curpad;
293	PL_comppad = c->comppad;
294	PL_compcv = c->compcv;
295	PL_stack_base = c->stack_base;
296	PL_stack_max = c->stack_max;
297	PL_tmps_stack = c->tmps_stack;
298	PL_tmps_floor = c->tmps_floor;
299	PL_tmps_ix = c->tmps_ix;
300	PL_tmps_max = c->tmps_max;
301	PL_markstack = c->markstack;
302	PL_markstack_ptr = c->markstack_ptr;
303	PL_markstack_max = c->markstack_max;
304	PL_scopestack = c->scopestack;
305	PL_scopestack_ix = c->scopestack_ix;
306	PL_scopestack_max = c->scopestack_max;
307	PL_savestack = c->savestack;
308	PL_savestack_ix = c->savestack_ix;
309	PL_savestack_max = c->savestack_max;
310	#if !PERL_VERSION_ATLEAST (5,9,0)
311	PL_retstack = c->retstack;
312	PL_retstack_ix = c->retstack_ix;
313	PL_retstack_max = c->retstack_max;
314	#endif
315	PL_curpm = c->curpm;
316	PL_curcop = c->curcop;
317		343
318	if (c->defav) REPLACE_SV (GvAV (PL_defgv), c->defav);	344	if (c->defav) REPLACE_SV (GvAV (PL_defgv), c->defav);
319	if (c->defsv) REPLACE_SV (DEFSV , c->defsv);	345	if (c->defsv) REPLACE_SV (DEFSV , c->defsv);
320	if (c->errsv) REPLACE_SV (ERRSV , c->errsv);	346	if (c->errsv) REPLACE_SV (ERRSV , c->errsv);
		347	if (c->deffh) REPLACE_SV (PL_defoutgv , c->deffh);
		348
		349	if (c->irssv)
		350	{
		351	if (c->irssv == PL_rs \|\| sv_eq (PL_rs, c->irssv))
		352	{
		353	SvREFCNT_dec (c->irssv);
		354	c->irssv = 0;
		355	}
		356	else
		357	{
		358	REPLACE_SV (PL_rs, c->irssv);
		359	if (!c->irssv_sv) c->irssv_sv = get_sv ("/", 0);
		360	sv_setsv (c->irssv_sv, PL_rs);
		361	}
		362	}
321		363
322	{	364	{
323	dSP;	365	dSP;
324	CV *cv;	366	CV *cv;
325		367
326	/* now do the ugly restore mess */	368	/* now do the ugly restore mess */
327	while ((cv = (CV *)POPs))	369	while ((cv = (CV *)POPs))
328	{	370	{
329	AV padlist = (AV )POPs;
330
331	if (padlist)
332	{
333	put_padlist (cv); /* mark this padlist as available */	371	put_padlist (aTHX_ cv); /* mark this padlist as available */
334	CvPADLIST(cv) = padlist;	372	CvDEPTH (cv) = PTR2IV (POPs);
335	}	373	CvPADLIST (cv) = (AV *)POPs;
336
337	++CvDEPTH(cv);
338	}	374	}
339		375
340	PUTBACK;	376	PUTBACK;
341	}	377	}
		378	assert (!PL_comppad \|\| AvARRAY (PL_comppad));//D
342	}	379	}
343		380
344	static void	381	static void
345	save_state(Coro__State c, int flags)	382	save_perl (pTHX_ Coro__State c)
346	{	383	{
		384	assert (!PL_comppad \|\| AvARRAY (PL_comppad));//D
347	{	385	{
348	dSP;	386	dSP;
349	I32 cxix = cxstack_ix;	387	I32 cxix = cxstack_ix;
350	PERL_CONTEXT *ccstk = cxstack;	388	PERL_CONTEXT *ccstk = cxstack;
351	PERL_SI *top_si = PL_curstackinfo;	389	PERL_SI *top_si = PL_curstackinfo;
…		…
353	/*	391	/*
354	* the worst thing you can imagine happens first - we have to save	392	* the worst thing you can imagine happens first - we have to save
355	* (and reinitialize) all cv's in the whole callchain :(	393	* (and reinitialize) all cv's in the whole callchain :(
356	*/	394	*/
357		395
		396	EXTEND (SP, 3 + 1);
358	PUSHs (Nullsv);	397	PUSHs (Nullsv);
359	/* this loop was inspired by pp_caller */	398	/* this loop was inspired by pp_caller */
360	for (;;)	399	for (;;)
361	{	400	{
362	while (cxix >= 0)	401	while (cxix >= 0)
363	{	402	{
364	PERL_CONTEXT *cx = &ccstk[cxix--];	403	PERL_CONTEXT *cx = &ccstk[cxix--];
365		404
366	if (CxTYPE(cx) == CXt_SUB)	405	if (CxTYPE (cx) == CXt_SUB)
367	{	406	{
368	CV *cv = cx->blk_sub.cv;	407	CV *cv = cx->blk_sub.cv;
		408
369	if (CvDEPTH(cv))	409	if (CvDEPTH (cv))
370	{	410	{
371	EXTEND (SP, CvDEPTH(cv)*2);	411	EXTEND (SP, 3);
372
373	while (--CvDEPTH(cv))
374	{
375	/* this tells the restore code to increment CvDEPTH */
376	PUSHs (Nullsv);
377	PUSHs ((SV *)cv);
378	}
379
380	PUSHs ((SV *)CvPADLIST(cv));	412	PUSHs ((SV *)CvPADLIST (cv));
		413	PUSHs (INT2PTR (SV *, CvDEPTH (cv)));
381	PUSHs ((SV *)cv);	414	PUSHs ((SV *)cv);
382		415
		416	CvDEPTH (cv) = 0;
383	get_padlist (cv);	417	get_padlist (aTHX_ cv);
384	}	418	}
385	}	419	}
386	#ifdef CXt_FORMAT
387	else if (CxTYPE(cx) == CXt_FORMAT)
388	{
389	/* I never used formats, so how should I know how these are implemented? */
390	/* my bold guess is as a simple, plain sub... */
391	croak ("CXt_FORMAT not yet handled. Don't switch coroutines from within formats");
392	}
393	#endif
394	}	420	}
395		421
396	if (top_si->si_type == PERLSI_MAIN)	422	if (top_si->si_type == PERLSI_MAIN)
397	break;	423	break;
398		424
…		…
402	}	428	}
403		429
404	PUTBACK;	430	PUTBACK;
405	}	431	}
406		432
407	c->defav = flags & TRANSFER_SAVE_DEFAV ? (AV *)SvREFCNT_inc (GvAV (PL_defgv)) : 0;	433	c->defav = c->save & CORO_SAVE_DEFAV ? (AV *)SvREFCNT_inc (GvAV (PL_defgv)) : 0;
408	c->defsv = flags & TRANSFER_SAVE_DEFSV ? SvREFCNT_inc (DEFSV) : 0;	434	c->defsv = c->save & CORO_SAVE_DEFSV ? SvREFCNT_inc (DEFSV) : 0;
409	c->errsv = flags & TRANSFER_SAVE_ERRSV ? SvREFCNT_inc (ERRSV) : 0;	435	c->errsv = c->save & CORO_SAVE_ERRSV ? SvREFCNT_inc (ERRSV) : 0;
		436	c->deffh = c->save & CORO_SAVE_DEFFH ? (GV *)SvREFCNT_inc (PL_defoutgv) : 0;
		437	c->irssv = c->save & CORO_SAVE_IRSSV ? SvREFCNT_inc (PL_rs) : 0;
410		438
411	c->dowarn = PL_dowarn;	439	#define VAR(name,type)c->name = PL_ ## name;
412	c->in_eval = PL_in_eval;	440	# include "state.h"
413		441	#undef VAR
414	c->curstackinfo = PL_curstackinfo;
415	c->curstack = PL_curstack;
416	c->mainstack = PL_mainstack;
417	c->stack_sp = PL_stack_sp;
418	c->op = PL_op;
419	c->curpad = PL_curpad;
420	c->comppad = PL_comppad;
421	c->compcv = PL_compcv;
422	c->stack_base = PL_stack_base;
423	c->stack_max = PL_stack_max;
424	c->tmps_stack = PL_tmps_stack;
425	c->tmps_floor = PL_tmps_floor;
426	c->tmps_ix = PL_tmps_ix;
427	c->tmps_max = PL_tmps_max;
428	c->markstack = PL_markstack;
429	c->markstack_ptr = PL_markstack_ptr;
430	c->markstack_max = PL_markstack_max;
431	c->scopestack = PL_scopestack;
432	c->scopestack_ix = PL_scopestack_ix;
433	c->scopestack_max = PL_scopestack_max;
434	c->savestack = PL_savestack;
435	c->savestack_ix = PL_savestack_ix;
436	c->savestack_max = PL_savestack_max;
437	#if !PERL_VERSION_ATLEAST (5,9,0)
438	c->retstack = PL_retstack;
439	c->retstack_ix = PL_retstack_ix;
440	c->retstack_max = PL_retstack_max;
441	#endif
442	c->curpm = PL_curpm;
443	c->curcop = PL_curcop;
444	}	442	}
445		443
446	/*	444	/*
447	* allocate various perl stacks. This is an exact copy	445	* allocate various perl stacks. This is an exact copy
448	* of perl.c:init_stacks, except that it uses less memory	446	* of perl.c:init_stacks, except that it uses less memory
449	* on the (sometimes correct) assumption that coroutines do	447	* on the (sometimes correct) assumption that coroutines do
450	* not usually need a lot of stackspace.	448	* not usually need a lot of stackspace.
451	*/	449	*/
		450	#if CORO_PREFER_PERL_FUNCTIONS
		451	# define coro_init_stacks init_stacks
		452	#else
452	static void	453	static void
453	coro_init_stacks ()	454	coro_init_stacks (pTHX)
454	{	455	{
455	PL_curstackinfo = new_stackinfo(96, 1024/sizeof(PERL_CONTEXT) - 1);	456	PL_curstackinfo = new_stackinfo(128, 1024/sizeof(PERL_CONTEXT));
456	PL_curstackinfo->si_type = PERLSI_MAIN;	457	PL_curstackinfo->si_type = PERLSI_MAIN;
457	PL_curstack = PL_curstackinfo->si_stack;	458	PL_curstack = PL_curstackinfo->si_stack;
458	PL_mainstack = PL_curstack; /* remember in case we switch stacks */	459	PL_mainstack = PL_curstack; /* remember in case we switch stacks */
459		460
460	PL_stack_base = AvARRAY(PL_curstack);	461	PL_stack_base = AvARRAY(PL_curstack);
461	PL_stack_sp = PL_stack_base;	462	PL_stack_sp = PL_stack_base;
462	PL_stack_max = PL_stack_base + AvMAX(PL_curstack);	463	PL_stack_max = PL_stack_base + AvMAX(PL_curstack);
463		464
464	New(50,PL_tmps_stack,96,SV*);	465	New(50,PL_tmps_stack,128,SV*);
465	PL_tmps_floor = -1;	466	PL_tmps_floor = -1;
466	PL_tmps_ix = -1;	467	PL_tmps_ix = -1;
467	PL_tmps_max = 96;	468	PL_tmps_max = 128;
468		469
469	New(54,PL_markstack,16,I32);	470	New(54,PL_markstack,32,I32);
470	PL_markstack_ptr = PL_markstack;	471	PL_markstack_ptr = PL_markstack;
471	PL_markstack_max = PL_markstack + 16;	472	PL_markstack_max = PL_markstack + 32;
472		473
473	#ifdef SET_MARK_OFFSET	474	#ifdef SET_MARK_OFFSET
474	SET_MARK_OFFSET;	475	SET_MARK_OFFSET;
475	#endif	476	#endif
476		477
477	New(54,PL_scopestack,16,I32);	478	New(54,PL_scopestack,32,I32);
478	PL_scopestack_ix = 0;	479	PL_scopestack_ix = 0;
479	PL_scopestack_max = 16;	480	PL_scopestack_max = 32;
480		481
481	New(54,PL_savestack,96,ANY);	482	New(54,PL_savestack,64,ANY);
482	PL_savestack_ix = 0;	483	PL_savestack_ix = 0;
483	PL_savestack_max = 96;	484	PL_savestack_max = 64;
484		485
485	#if !PERL_VERSION_ATLEAST (5,9,0)	486	#if !PERL_VERSION_ATLEAST (5,9,0)
486	New(54,PL_retstack,8,OP*);	487	New(54,PL_retstack,16,OP*);
487	PL_retstack_ix = 0;	488	PL_retstack_ix = 0;
488	PL_retstack_max = 8;	489	PL_retstack_max = 16;
489	#endif	490	#endif
490	}	491	}
		492	#endif
491		493
492	/*	494	/*
493	* destroy the stacks, the callchain etc...	495	* destroy the stacks, the callchain etc...
494	*/	496	*/
495	static void	497	static void
496	coro_destroy_stacks()	498	coro_destroy_stacks (pTHX)
497	{	499	{
498	if (!IN_DESTRUCT)	500	if (!IN_DESTRUCT)
499	{	501	{
500	/* is this ugly, I ask? */	502	/* restore all saved variables and stuff */
501	LEAVE_SCOPE (0);	503	LEAVE_SCOPE (0);
		504	assert (PL_tmps_floor == -1);
502		505
503	/* sure it is, but more important: is it correct?? :/ */	506	/* free all temporaries */
504	FREETMPS;	507	FREETMPS;
		508	assert (PL_tmps_ix == -1);
505		509
		510	/* unwind all extra stacks */
506	/POPSTACK_TO (PL_mainstack);//D//use/	511	POPSTACK_TO (PL_mainstack);
		512
		513	/* unwind main stack */
		514	dounwind (-1);
507	}	515	}
508		516
509	while (PL_curstackinfo->si_next)	517	while (PL_curstackinfo->si_next)
510	PL_curstackinfo = PL_curstackinfo->si_next;	518	PL_curstackinfo = PL_curstackinfo->si_next;
511		519
512	while (PL_curstackinfo)	520	while (PL_curstackinfo)
513	{	521	{
514	PERL_SI *p = PL_curstackinfo->si_prev;	522	PERL_SI *p = PL_curstackinfo->si_prev;
515		523
516	{ /D//remove/
517	dSP;
518	SWITCHSTACK (PL_curstack, PL_curstackinfo->si_stack);
519	PUTBACK; /* possibly superfluous */
520	}
521
522	if (!IN_DESTRUCT)	524	if (!IN_DESTRUCT)
523	{
524	dounwind (-1);/D//remove/
525	SvREFCNT_dec (PL_curstackinfo->si_stack);	525	SvREFCNT_dec (PL_curstackinfo->si_stack);
526	}
527		526
528	Safefree (PL_curstackinfo->si_cxstack);	527	Safefree (PL_curstackinfo->si_cxstack);
529	Safefree (PL_curstackinfo);	528	Safefree (PL_curstackinfo);
530	PL_curstackinfo = p;	529	PL_curstackinfo = p;
531	}	530	}
…		…
537	#if !PERL_VERSION_ATLEAST (5,9,0)	536	#if !PERL_VERSION_ATLEAST (5,9,0)
538	Safefree (PL_retstack);	537	Safefree (PL_retstack);
539	#endif	538	#endif
540	}	539	}
541		540
		541	/ coroutine stack handling **********************************************/
		542
542	static void	543	static void
543	setup_coro (struct coro *coro)	544	setup_coro (pTHX_ struct coro *coro)
544	{	545	{
545	/*	546	/*
546	* emulate part of the perl startup here.	547	* emulate part of the perl startup here.
547	*/	548	*/
548
549	coro_init_stacks ();	549	coro_init_stacks (aTHX);
		550
		551	PL_curcop = &PL_compiling;
		552	PL_in_eval = EVAL_NULL;
		553	PL_comppad = 0;
		554	PL_curpm = 0;
		555	PL_localizing = 0;
		556	PL_dirty = 0;
		557	PL_restartop = 0;
550		558
551	{	559	{
552	dSP;	560	dSP;
553	LOGOP myop;	561	LOGOP myop;
554		562
555	/PL_curcop = 0;/
556	PL_in_eval = 0;
557	SvREFCNT_dec (GvAV (PL_defgv));	563	SvREFCNT_dec (GvAV (PL_defgv));
558	GvAV (PL_defgv) = coro->args; coro->args = 0;	564	GvAV (PL_defgv) = coro->args; coro->args = 0;
559
560	SPAGAIN;
561		565
562	Zero (&myop, 1, LOGOP);	566	Zero (&myop, 1, LOGOP);
563	myop.op_next = Nullop;	567	myop.op_next = Nullop;
564	myop.op_flags = OPf_WANT_VOID;	568	myop.op_flags = OPf_WANT_VOID;
565		569
		570	PUSHMARK (SP);
		571	XPUSHs ((SV *)get_cv ("Coro::State::_coro_init", FALSE));
		572	PUTBACK;
566	PL_op = (OP *)&myop;	573	PL_op = (OP *)&myop;
567
568	PUSHMARK (SP);
569	PUSHMARK (SP);
570	XPUSHs ((SV *)get_cv ("Coro::State::coro_init", FALSE));
571	PUTBACK;
572	PL_op = PL_ppaddr[OP_ENTERSUB](aTHX);	574	PL_op = PL_ppaddr[OP_ENTERSUB](aTHX);
573	SPAGAIN;	575	SPAGAIN;
574
575	ENTER; /* necessary e.g. for dounwind */
576	}	576	}
577	}
578		577
		578	ENTER; /* necessary e.g. for dounwind */
		579	}
		580
579	static void	581	static void
580	free_coro_mortal ()	582	free_coro_mortal (pTHX)
581	{	583	{
582	if (coro_mortal)	584	if (coro_mortal)
583	{	585	{
584	SvREFCNT_dec (coro_mortal);	586	SvREFCNT_dec (coro_mortal);
585	coro_mortal = 0;	587	coro_mortal = 0;
586	}	588	}
587	}	589	}
588		590
		591	/* inject a fake call to Coro::State::_cctx_init into the execution */
589	static void NOINLINE	592	static void NOINLINE
590	prepare_cctx (coro_stack *cctx)	593	prepare_cctx (pTHX_ coro_cctx *cctx)
591	{	594	{
592	dSP;	595	dSP;
593	LOGOP myop;	596	LOGOP myop;
594		597
595	Zero (&myop, 1, LOGOP);	598	Zero (&myop, 1, LOGOP);
596	myop.op_next = PL_op;	599	myop.op_next = PL_op;
597	myop.op_flags = OPf_WANT_VOID;	600	myop.op_flags = OPf_WANT_VOID \| OPf_STACKED;
598
599	sv_setiv (get_sv ("Coro::State::cctx_stack", FALSE), PTR2IV (cctx));
600		601
601	PUSHMARK (SP);	602	PUSHMARK (SP);
		603	EXTEND (SP, 2);
		604	PUSHs (sv_2mortal (newSViv (PTR2IV (cctx))));
602	XPUSHs ((SV *)get_cv ("Coro::State::cctx_init", FALSE));	605	PUSHs ((SV *)get_cv ("Coro::State::_cctx_init", FALSE));
603	PUTBACK;	606	PUTBACK;
		607	PL_op = (OP *)&myop;
604	PL_restartop = PL_ppaddr[OP_ENTERSUB](aTHX);	608	PL_op = PL_ppaddr[OP_ENTERSUB](aTHX);
605	SPAGAIN;	609	SPAGAIN;
606	}	610	}
607		611
608	static void	612	static void
609	coro_run (void *arg)	613	coro_run (void *arg)
610	{	614	{
		615	dTHX;
		616
611	/* coro_run is the alternative epilogue of transfer() */	617	/* coro_run is the alternative tail of transfer(), so unlock here. */
612	UNLOCK;	618	UNLOCK;
613		619
614	/*	620	/*
615	* this is a _very_ stripped down perl interpreter ;)	621	* this is a _very_ stripped down perl interpreter ;)
616	*/	622	*/
617	PL_top_env = &PL_start_env;	623	PL_top_env = &PL_start_env;
		624
618	/* inject call to cctx_init */	625	/* inject call to cctx_init */
619	prepare_cctx ((coro_stack *)arg);	626	prepare_cctx (aTHX_ (coro_cctx *)arg);
620		627
621	/* somebody will hit me for both perl_run and PL_restartop */	628	/* somebody will hit me for both perl_run and PL_restartop */
		629	PL_restartop = PL_op;
622	perl_run (PL_curinterp);	630	perl_run (PL_curinterp);
623		631
624	fputs ("FATAL: C coroutine fell over the edge of the world, aborting.\n", stderr);	632	fputs ("FATAL: C coroutine fell over the edge of the world, aborting. Did you call exit in a coroutine?\n", stderr);
625	abort ();	633	abort ();
626	}	634	}
627		635
628	static coro_stack *	636	static coro_cctx *
629	stack_new ()	637	cctx_new ()
630	{	638	{
631	coro_stack *stack;	639	coro_cctx *cctx;
		640	void *stack_start;
		641	size_t stack_size;
632		642
		643	++cctx_count;
		644
633	New (0, stack, 1, coro_stack);	645	Newz (0, cctx, 1, coro_cctx);
634		646
635	#if HAVE_MMAP	647	#if HAVE_MMAP
636		648
637	stack->ssize = ((STACKSIZE * sizeof (long) + PAGESIZE - 1) / PAGESIZE + STACKGUARD) * PAGESIZE;	649	cctx->ssize = ((coro_stacksize * sizeof (long) + PAGESIZE - 1) / PAGESIZE + CORO_STACKGUARD) * PAGESIZE;
638	/* mmap suppsedly does allocate-on-write for us */	650	/* mmap supposedly does allocate-on-write for us */
639	stack->sptr = mmap (0, stack->ssize, PROT_EXEC\|PROT_READ\|PROT_WRITE, MAP_PRIVATE\|MAP_ANONYMOUS, 0, 0);	651	cctx->sptr = mmap (0, cctx->ssize, PROT_EXEC\|PROT_READ\|PROT_WRITE, MAP_PRIVATE\|MAP_ANONYMOUS, 0, 0);
640		652
641	if (stack->sptr == (void *)-1)	653	if (cctx->sptr != (void *)-1)
642	{
643	perror ("FATAL: unable to mmap stack for coroutine");
644	_exit (EXIT_FAILURE);
645	}	654	{
646
647	# if STACKGUARD	655	# if CORO_STACKGUARD
648	mprotect (stack->sptr, STACKGUARD * PAGESIZE, PROT_NONE);	656	mprotect (cctx->sptr, CORO_STACKGUARD * PAGESIZE, PROT_NONE);
649	# endif	657	# endif
650		658	stack_start = CORO_STACKGUARD * PAGESIZE + (char *)cctx->sptr;
651	#else	659	stack_size = cctx->ssize - CORO_STACKGUARD * PAGESIZE;
652		660	cctx->mapped = 1;
653	stack->ssize = STACKSIZE * (long)sizeof (long);
654	New (0, stack->sptr, STACKSIZE, long);
655
656	if (!stack->sptr)
657	{	661	}
		662	else
		663	#endif
		664	{
		665	cctx->ssize = coro_stacksize * (long)sizeof (long);
		666	New (0, cctx->sptr, coro_stacksize, long);
		667
		668	if (!cctx->sptr)
		669	{
658	perror (stderr, "FATAL: unable to malloc stack for coroutine");	670	perror ("FATAL: unable to allocate stack for coroutine");
659	_exit (EXIT_FAILURE);	671	_exit (EXIT_FAILURE);
660	}	672	}
661		673
662	#endif	674	stack_start = cctx->sptr;
		675	stack_size = cctx->ssize;
		676	}
663		677
		678	REGISTER_STACK (cctx, (char )stack_start, (char )stack_start + stack_size);
664	coro_create (&stack->cctx, coro_run, (void *)stack, stack->sptr, stack->ssize);	679	coro_create (&cctx->cctx, coro_run, (void *)cctx, stack_start, stack_size);
665		680
666	return stack;	681	return cctx;
667	}	682	}
668		683
669	static void	684	static void
670	stack_free (coro_stack *stack)	685	cctx_destroy (coro_cctx *cctx)
671	{	686	{
672	if (!stack)	687	if (!cctx)
673	return;	688	return;
674		689
		690	--cctx_count;
		691
		692	#if CORO_USE_VALGRIND
		693	VALGRIND_STACK_DEREGISTER (cctx->valgrind_id);
		694	#endif
		695
675	#if HAVE_MMAP	696	#if HAVE_MMAP
		697	if (cctx->mapped)
676	munmap (stack->sptr, stack->ssize);	698	munmap (cctx->sptr, cctx->ssize);
677	#else	699	else
		700	#endif
678	Safefree (stack->sptr);	701	Safefree (cctx->sptr);
679	#endif
680		702
681	Safefree (stack);	703	Safefree (cctx);
682	}	704	}
683		705
684	static coro_stack *stack_first;
685	static int cctx_count, cctx_idle;
686
687	static coro_stack *	706	static coro_cctx *
688	stack_get ()	707	cctx_get (pTHX)
689	{	708	{
690	coro_stack *stack;	709	while (cctx_first)
691
692	if (stack_first)
693	{	710	{
		711	coro_cctx *cctx = cctx_first;
		712	cctx_first = cctx->next;
694	--cctx_idle;	713	--cctx_idle;
695	stack = stack_first;	714
696	stack_first = stack->next;	715	if (cctx->ssize >= coro_stacksize)
		716	return cctx;
		717
		718	cctx_destroy (cctx);
697	}	719	}
698	else	720
699	{
700	++cctx_count;
701	stack = stack_new ();
702	PL_op = PL_op->op_next;	721	PL_op = PL_op->op_next;
		722	return cctx_new ();
		723	}
		724
		725	static void
		726	cctx_put (coro_cctx *cctx)
		727	{
		728	/* free another cctx if overlimit */
		729	if (cctx_idle >= MAX_IDLE_CCTX)
		730	{
		731	coro_cctx *first = cctx_first;
		732	cctx_first = first->next;
		733	--cctx_idle;
		734
		735	assert (!first->inuse);
		736	cctx_destroy (first);
703	}	737	}
704		738
705	return stack;
706	}
707
708	static void
709	stack_put (coro_stack *stack)
710	{
711	++cctx_idle;	739	++cctx_idle;
712	stack->next = stack_first;	740	cctx->next = cctx_first;
713	stack_first = stack;	741	cctx_first = cctx;
714	}	742	}
		743
		744	/ coroutine switching ***************************************************/
715		745
716	/* never call directly, always through the coro_state_transfer global variable */	746	/* never call directly, always through the coro_state_transfer global variable */
717	static void NOINLINE	747	static void NOINLINE
718	transfer (struct coro prev, struct coro next, int flags)	748	transfer (pTHX_ struct coro prev, struct coro next)
719	{	749	{
720	dSTACKLEVEL;	750	dSTACKLEVEL;
721		751
722	/* sometimes transfer is only called to set idle_sp */	752	/* sometimes transfer is only called to set idle_sp */
723	if (flags == TRANSFER_SET_STACKLEVEL)	753	if (!next)
		754	{
724	((coro_stack *)prev)->idle_sp = STACKLEVEL;	755	((coro_cctx *)prev)->idle_sp = STACKLEVEL;
		756	assert (((coro_cctx )prev)->idle_te = PL_top_env); / just for the side-effect when asserts are enabled */
		757	}
725	else if (prev != next)	758	else if (prev != next)
726	{	759	{
727	coro_stack *prev__stack;	760	coro_cctx *prev__cctx;
		761
		762	if (prev->flags & CF_NEW)
		763	{
		764	/* create a new empty context */
		765	Newz (0, prev->cctx, 1, coro_cctx);
		766	prev->cctx->inuse = 1;
		767	prev->flags &= ~CF_NEW;
		768	prev->flags \|= CF_RUNNING;
		769	}
		770
		771	/TODO: must not croak here /
		772	if (!prev->flags & CF_RUNNING)
		773	croak ("Coro::State::transfer called with non-running prev Coro::State, but can only transfer from running states");
		774
		775	if (next->flags & CF_RUNNING)
		776	croak ("Coro::State::transfer called with running next Coro::State, but can only transfer to inactive states");
		777
		778	if (next->flags & CF_DESTROYED)
		779	croak ("Coro::State::transfer called with destroyed next Coro::State, but can only transfer to inactive states");
		780
		781	prev->flags &= ~CF_RUNNING;
		782	next->flags \|= CF_RUNNING;
728		783
729	LOCK;	784	LOCK;
730		785
731	if (next->mainstack)	786	if (next->flags & CF_NEW)
732	{	787	{
733	/* coroutine already started */	788	/* need to start coroutine */
734	SAVE (prev, flags);	789	next->flags &= ~CF_NEW;
735	LOAD (next);	790	/* first get rid of the old state */
		791	save_perl (aTHX_ prev);
		792	/* setup coroutine call */
		793	setup_coro (aTHX_ next);
		794	/* need a new stack */
		795	assert (!next->cctx);
736	}	796	}
737	else	797	else
738	{	798	{
739	/* need to start coroutine */	799	/* coroutine already started */
740	/* first get rid of the old state */	800	save_perl (aTHX_ prev);
741	SAVE (prev, -1);	801	load_perl (aTHX_ next);
742	/* setup coroutine call */
743	setup_coro (next);
744	/* need a stack */
745	next->stack = 0;
746	}	802	}
747		803
748	if (!prev->stack)
749	/* create a new empty context */
750	Newz (0, prev->stack, 1, coro_stack);
751
752	prev__stack = prev->stack;	804	prev__cctx = prev->cctx;
753		805
754	/* possibly "free" the stack */	806	/* possibly "free" the cctx */
755	if (prev__stack->idle_sp == STACKLEVEL)	807	if (prev__cctx->idle_sp == STACKLEVEL)
756	{	808	{
757	stack_put (prev__stack);	809	/* I assume that STACKLEVEL is a stronger indicator than PL_top_env changes */
		810	assert (("ERROR: current top_env must equal previous top_env", PL_top_env == prev__cctx->idle_te));
		811
758	prev->stack = 0;	812	prev->cctx = 0;
		813
		814	cctx_put (prev__cctx);
		815	prev__cctx->inuse = 0;
759	}	816	}
760		817
761	if (!next->stack)	818	if (!next->cctx)
762	next->stack = stack_get ();
763
764	if (prev__stack != next->stack)
765	{	819	{
766	prev__stack->top_env = PL_top_env;	820	next->cctx = cctx_get (aTHX);
767	PL_top_env = next->stack->top_env;	821	assert (!next->cctx->inuse);
768	coro_transfer (&prev__stack->cctx, &next->stack->cctx);	822	next->cctx->inuse = 1;
769	}	823	}
770		824
		825	if (prev__cctx != next->cctx)
		826	{
		827	prev__cctx->top_env = PL_top_env;
		828	PL_top_env = next->cctx->top_env;
		829	coro_transfer (&prev__cctx->cctx, &next->cctx->cctx);
		830	}
		831
771	free_coro_mortal ();	832	free_coro_mortal (aTHX);
772
773	UNLOCK;	833	UNLOCK;
774	}	834	}
775	}	835	}
776		836
777	struct transfer_args	837	struct transfer_args
778	{	838	{
779	struct coro prev, next;	839	struct coro prev, next;
780	int flags;
781	};	840	};
782		841
783	#define TRANSFER(ta) transfer ((ta).prev, (ta).next, (ta).flags)	842	#define TRANSFER(ta) transfer (aTHX_ (ta).prev, (ta).next)
784		843
		844	/ high level stuff ******************************************************/
		845
785	static void	846	static int
786	coro_state_destroy (struct coro *coro)	847	coro_state_destroy (pTHX_ struct coro *coro)
787	{	848	{
788	if (coro->refcnt--)	849	if (coro->flags & CF_DESTROYED)
789	return;	850	return 0;
		851
		852	coro->flags \|= CF_DESTROYED;
		853
		854	if (coro->flags & CF_READY)
		855	{
		856	/* reduce nready, as destroying a ready coro effectively unreadies it */
		857	/* alternative: look through all ready queues and remove the coro */
		858	LOCK;
		859	--coro_nready;
		860	UNLOCK;
		861	}
		862	else
		863	coro->flags \|= CF_READY; /* make sure it is NOT put into the readyqueue */
790		864
791	if (coro->mainstack && coro->mainstack != main_mainstack)	865	if (coro->mainstack && coro->mainstack != main_mainstack)
792	{	866	{
793	struct coro temp;	867	struct coro temp;
794		868
795	SAVE ((&temp), TRANSFER_SAVE_ALL);	869	assert (!(coro->flags & CF_RUNNING));
796	LOAD (coro);
797		870
		871	Zero (&temp, 1, struct coro);
		872	temp.save = CORO_SAVE_DEF;
		873
		874	if (coro->flags & CF_RUNNING)
		875	croak ("FATAL: tried to destroy currently running coroutine");
		876
		877	save_perl (aTHX_ &temp);
		878	load_perl (aTHX_ coro);
		879
798	coro_destroy_stacks ();	880	coro_destroy_stacks (aTHX);
799		881
800	LOAD ((&temp)); /* this will get rid of defsv etc.. */	882	load_perl (aTHX_ &temp); /* this will get rid of defsv etc.. */
801		883
802	coro->mainstack = 0;	884	coro->mainstack = 0;
803	}	885	}
804		886
805	stack_free (coro->stack);	887	cctx_destroy (coro->cctx);
806	SvREFCNT_dec (coro->args);	888	SvREFCNT_dec (coro->args);
807	Safefree (coro);	889
		890	return 1;
808	}	891	}
809		892
810	static int	893	static int
811	coro_state_clear (pTHX_ SV sv, MAGIC mg)	894	coro_state_free (pTHX_ SV sv, MAGIC mg)
812	{	895	{
813	struct coro coro = (struct coro )mg->mg_ptr;	896	struct coro coro = (struct coro )mg->mg_ptr;
814	mg->mg_ptr = 0;	897	mg->mg_ptr = 0;
815		898
		899	if (--coro->refcnt < 0)
		900	{
816	coro_state_destroy (coro);	901	coro_state_destroy (aTHX_ coro);
		902	Safefree (coro);
		903	}
817		904
818	return 0;	905	return 0;
819	}	906	}
820		907
821	static int	908	static int
…		…
828	return 0;	915	return 0;
829	}	916	}
830		917
831	static MGVTBL coro_state_vtbl = {	918	static MGVTBL coro_state_vtbl = {
832	0, 0, 0, 0,	919	0, 0, 0, 0,
833	coro_state_clear,	920	coro_state_free,
834	0,	921	0,
835	#ifdef MGf_DUP	922	#ifdef MGf_DUP
836	coro_state_dup,	923	coro_state_dup,
837	#else	924	#else
838	# define MGf_DUP 0	925	# define MGf_DUP 0
839	#endif	926	#endif
840	};	927	};
841		928
842	static struct coro *	929	static struct coro *
843	SvSTATE (SV *coro)	930	SvSTATE_ (pTHX_ SV *coro)
844	{	931	{
845	HV *stash;	932	HV *stash;
846	MAGIC *mg;	933	MAGIC *mg;
847		934
848	if (SvROK (coro))	935	if (SvROK (coro))
…		…
854	/* very slow, but rare, check */	941	/* very slow, but rare, check */
855	if (!sv_derived_from (sv_2mortal (newRV_inc (coro)), "Coro::State"))	942	if (!sv_derived_from (sv_2mortal (newRV_inc (coro)), "Coro::State"))
856	croak ("Coro::State object required");	943	croak ("Coro::State object required");
857	}	944	}
858		945
859	mg = SvMAGIC (coro);	946	mg = CORO_MAGIC (coro);
860	assert (mg->mg_type == PERL_MAGIC_ext);
861	return (struct coro *)mg->mg_ptr;	947	return (struct coro *)mg->mg_ptr;
862	}	948	}
863		949
		950	#define SvSTATE(sv) SvSTATE_ (aTHX_ (sv))
		951
864	static void	952	static void
865	prepare_transfer (struct transfer_args ta, SV prev, SV *next, int flags)	953	prepare_transfer (pTHX_ struct transfer_args ta, SV prev_sv, SV *next_sv)
866	{	954	{
867	ta->prev = SvSTATE (prev);	955	ta->prev = SvSTATE (prev_sv);
868	ta->next = SvSTATE (next);	956	ta->next = SvSTATE (next_sv);
869	ta->flags = flags;
870	}	957	}
871		958
872	static void	959	static void
873	api_transfer (SV prev, SV next, int flags)	960	api_transfer (SV prev_sv, SV next_sv)
874	{	961	{
875	dTHX;	962	dTHX;
876	struct transfer_args ta;	963	struct transfer_args ta;
877		964
878	prepare_transfer (&ta, prev, next, flags);	965	prepare_transfer (aTHX_ &ta, prev_sv, next_sv);
879	TRANSFER (ta);	966	TRANSFER (ta);
880	}	967	}
881		968
		969	static int
		970	api_save (SV *coro_sv, int new_save)
		971	{
		972	dTHX;
		973	struct coro *coro = SvSTATE (coro_sv);
		974	int old_save = coro->save;
		975
		976	if (new_save >= 0)
		977	coro->save = new_save;
		978
		979	return old_save;
		980	}
		981
882	/ Coro ******************************************************************/	982	/ Coro ******************************************************************/
883		983
884	#define PRIO_MAX 3
885	#define PRIO_HIGH 1
886	#define PRIO_NORMAL 0
887	#define PRIO_LOW -1
888	#define PRIO_IDLE -3
889	#define PRIO_MIN -4
890
891	/* for Coro.pm */
892	static GV coro_current, coro_idle;
893	static AV *coro_ready [PRIO_MAX-PRIO_MIN+1];
894	static int coro_nready;
895
896	static void	984	static void
897	coro_enq (SV *sv)	985	coro_enq (pTHX_ SV *coro_sv)
898	{	986	{
899	int prio;
900
901	if (SvTYPE (sv) != SVt_PVHV)
902	croak ("Coro::ready tried to enqueue something that is not a coroutine");
903
904	prio = SvSTATE (sv)->prio;
905
906	av_push (coro_ready [prio - PRIO_MIN], sv);	987	av_push (coro_ready [SvSTATE (coro_sv)->prio - PRIO_MIN], coro_sv);
907	coro_nready++;
908	}	988	}
909		989
910	static SV *	990	static SV *
911	coro_deq (int min_prio)	991	coro_deq (pTHX_ int min_prio)
912	{	992	{
913	int prio = PRIO_MAX - PRIO_MIN;	993	int prio = PRIO_MAX - PRIO_MIN;
914		994
915	min_prio -= PRIO_MIN;	995	min_prio -= PRIO_MIN;
916	if (min_prio < 0)	996	if (min_prio < 0)
917	min_prio = 0;	997	min_prio = 0;
918		998
919	for (prio = PRIO_MAX - PRIO_MIN + 1; --prio >= min_prio; )	999	for (prio = PRIO_MAX - PRIO_MIN + 1; --prio >= min_prio; )
920	if (AvFILLp (coro_ready [prio]) >= 0)	1000	if (AvFILLp (coro_ready [prio]) >= 0)
921	{
922	coro_nready--;
923	return av_shift (coro_ready [prio]);	1001	return av_shift (coro_ready [prio]);
924	}
925		1002
926	return 0;	1003	return 0;
927	}	1004	}
928		1005
929	static void	1006	static int
930	api_ready (SV *coro)	1007	api_ready (SV *coro_sv)
931	{	1008	{
932	dTHX;	1009	dTHX;
		1010	struct coro *coro;
933		1011
934	if (SvROK (coro))	1012	if (SvROK (coro_sv))
935	coro = SvRV (coro);	1013	coro_sv = SvRV (coro_sv);
		1014
		1015	coro = SvSTATE (coro_sv);
		1016
		1017	if (coro->flags & CF_READY)
		1018	return 0;
		1019
		1020	coro->flags \|= CF_READY;
936		1021
937	LOCK;	1022	LOCK;
938	coro_enq (SvREFCNT_inc (coro));	1023	coro_enq (aTHX_ SvREFCNT_inc (coro_sv));
		1024	++coro_nready;
939	UNLOCK;	1025	UNLOCK;
940	}
941		1026
		1027	return 1;
		1028	}
		1029
942	static void	1030	static int
		1031	api_is_ready (SV *coro_sv)
		1032	{
		1033	dTHX;
		1034	return !!(SvSTATE (coro_sv)->flags & CF_READY);
		1035	}
		1036
		1037	static void
943	prepare_schedule (struct transfer_args *ta)	1038	prepare_schedule (pTHX_ struct transfer_args *ta)
944	{	1039	{
945	SV current, prev, *next;	1040	SV prev_sv, next_sv;
946
947	current = GvSV (coro_current);
948		1041
949	for (;;)	1042	for (;;)
950	{	1043	{
951	LOCK;	1044	LOCK;
952	next = coro_deq (PRIO_MIN);	1045	next_sv = coro_deq (aTHX_ PRIO_MIN);
		1046
		1047	/* nothing to schedule: call the idle handler */
		1048	if (!next_sv)
		1049	{
		1050	dSP;
		1051	UNLOCK;
		1052
		1053	ENTER;
		1054	SAVETMPS;
		1055
		1056	PUSHMARK (SP);
		1057	PUTBACK;
		1058	call_sv (get_sv ("Coro::idle", FALSE), G_DISCARD);
		1059
		1060	FREETMPS;
		1061	LEAVE;
		1062	continue;
		1063	}
		1064
		1065	ta->next = SvSTATE (next_sv);
		1066
		1067	/* cannot transfer to destroyed coros, skip and look for next */
		1068	if (ta->next->flags & CF_DESTROYED)
		1069	{
		1070	UNLOCK;
		1071	SvREFCNT_dec (next_sv);
		1072	/* coro_nready is already taken care of by destroy */
		1073	continue;
		1074	}
		1075
		1076	--coro_nready;
953	UNLOCK;	1077	UNLOCK;
954
955	if (next)
956	break;	1078	break;
957
958	{
959	dSP;
960
961	ENTER;
962	SAVETMPS;
963
964	PUSHMARK (SP);
965	PUTBACK;
966	call_sv (GvSV (coro_idle), G_DISCARD);
967
968	FREETMPS;
969	LEAVE;
970	}	1079	}
971	}
972
973	prev = SvRV (current);
974	SvRV (current) = next;
975		1080
976	/* free this only after the transfer */	1081	/* free this only after the transfer */
		1082	prev_sv = SvRV (coro_current);
		1083	SvRV_set (coro_current, next_sv);
		1084	ta->prev = SvSTATE (prev_sv);
		1085
		1086	assert (ta->next->flags & CF_READY);
		1087	ta->next->flags &= ~CF_READY;
		1088
977	LOCK;	1089	LOCK;
978	free_coro_mortal ();	1090	free_coro_mortal (aTHX);
		1091	coro_mortal = prev_sv;
979	UNLOCK;	1092	UNLOCK;
980	coro_mortal = prev;
981
982	ta->prev = SvSTATE (prev);
983	ta->next = SvSTATE (next);
984	ta->flags = TRANSFER_SAVE_ALL;
985	}	1093	}
986		1094
987	static void	1095	static void
988	prepare_cede (struct transfer_args *ta)	1096	prepare_cede (pTHX_ struct transfer_args *ta)
989	{	1097	{
990	LOCK;	1098	api_ready (coro_current);
991	coro_enq (SvREFCNT_inc (SvRV (GvSV (coro_current))));
992	UNLOCK;
993
994	prepare_schedule (ta);	1099	prepare_schedule (aTHX_ ta);
		1100	}
		1101
		1102	static int
		1103	prepare_cede_notself (pTHX_ struct transfer_args *ta)
		1104	{
		1105	if (coro_nready)
		1106	{
		1107	SV *prev = SvRV (coro_current);
		1108	prepare_schedule (aTHX_ ta);
		1109	api_ready (prev);
		1110	return 1;
		1111	}
		1112	else
		1113	return 0;
995	}	1114	}
996		1115
997	static void	1116	static void
998	api_schedule (void)	1117	api_schedule (void)
999	{	1118	{
1000	dTHX;	1119	dTHX;
1001	struct transfer_args ta;	1120	struct transfer_args ta;
1002		1121
1003	prepare_schedule (&ta);	1122	prepare_schedule (aTHX_ &ta);
1004	TRANSFER (ta);	1123	TRANSFER (ta);
1005	}	1124	}
1006		1125
1007	static void	1126	static int
1008	api_cede (void)	1127	api_cede (void)
1009	{	1128	{
1010	dTHX;	1129	dTHX;
1011	struct transfer_args ta;	1130	struct transfer_args ta;
1012		1131
1013	prepare_cede (&ta);	1132	prepare_cede (aTHX_ &ta);
		1133
		1134	if (ta.prev != ta.next)
		1135	{
1014	TRANSFER (ta);	1136	TRANSFER (ta);
		1137	return 1;
		1138	}
		1139	else
		1140	return 0;
		1141	}
		1142
		1143	static int
		1144	api_cede_notself (void)
		1145	{
		1146	dTHX;
		1147	struct transfer_args ta;
		1148
		1149	if (prepare_cede_notself (aTHX_ &ta))
		1150	{
		1151	TRANSFER (ta);
		1152	return 1;
		1153	}
		1154	else
		1155	return 0;
1015	}	1156	}
1016		1157
1017	MODULE = Coro::State PACKAGE = Coro::State	1158	MODULE = Coro::State PACKAGE = Coro::State
1018		1159
1019	PROTOTYPES: DISABLE	1160	PROTOTYPES: DISABLE
…		…
1025	#endif	1166	#endif
1026	BOOT_PAGESIZE;	1167	BOOT_PAGESIZE;
1027		1168
1028	coro_state_stash = gv_stashpv ("Coro::State", TRUE);	1169	coro_state_stash = gv_stashpv ("Coro::State", TRUE);
1029		1170
1030	newCONSTSUB (coro_state_stash, "SAVE_DEFAV", newSViv (TRANSFER_SAVE_DEFAV));	1171	newCONSTSUB (coro_state_stash, "SAVE_DEFAV", newSViv (CORO_SAVE_DEFAV));
1031	newCONSTSUB (coro_state_stash, "SAVE_DEFSV", newSViv (TRANSFER_SAVE_DEFSV));	1172	newCONSTSUB (coro_state_stash, "SAVE_DEFSV", newSViv (CORO_SAVE_DEFSV));
1032	newCONSTSUB (coro_state_stash, "SAVE_ERRSV", newSViv (TRANSFER_SAVE_ERRSV));	1173	newCONSTSUB (coro_state_stash, "SAVE_ERRSV", newSViv (CORO_SAVE_ERRSV));
		1174	newCONSTSUB (coro_state_stash, "SAVE_IRSSV", newSViv (CORO_SAVE_IRSSV));
		1175	newCONSTSUB (coro_state_stash, "SAVE_DEFFH", newSViv (CORO_SAVE_DEFFH));
		1176	newCONSTSUB (coro_state_stash, "SAVE_DEF", newSViv (CORO_SAVE_DEF));
		1177	newCONSTSUB (coro_state_stash, "SAVE_ALL", newSViv (CORO_SAVE_ALL));
1033		1178
1034	main_mainstack = PL_mainstack;	1179	main_mainstack = PL_mainstack;
1035		1180
1036	coroapi.ver = CORO_API_VERSION;	1181	coroapi.ver = CORO_API_VERSION;
1037	coroapi.transfer = api_transfer;	1182	coroapi.transfer = api_transfer;
…		…
1047	HV *hv;	1192	HV *hv;
1048	int i;	1193	int i;
1049		1194
1050	Newz (0, coro, 1, struct coro);	1195	Newz (0, coro, 1, struct coro);
1051	coro->args = newAV ();	1196	coro->args = newAV ();
		1197	coro->save = CORO_SAVE_DEF;
		1198	coro->flags = CF_NEW;
1052		1199
1053	hv = newHV ();	1200	hv = newHV ();
1054	sv_magicext ((SV )hv, 0, PERL_MAGIC_ext, &coro_state_vtbl, (char )coro, 0)->mg_flags \|= MGf_DUP;	1201	sv_magicext ((SV )hv, 0, PERL_MAGIC_ext, &coro_state_vtbl, (char )coro, 0)->mg_flags \|= MGf_DUP;
1055	RETVAL = sv_bless (newRV_noinc ((SV *)hv), gv_stashpv (klass, 1));	1202	RETVAL = sv_bless (newRV_noinc ((SV *)hv), gv_stashpv (klass, 1));
1056		1203
1057	for (i = 1; i < items; i++)	1204	for (i = 1; i < items; i++)
1058	av_push (coro->args, newSVsv (ST (i)));	1205	av_push (coro->args, newSVsv (ST (i)));
1059
1060	/coro->mainstack = 0; //actual work is done inside transfer /
1061	/coro->stack = 0;/
1062	}	1206	}
1063	OUTPUT:	1207	OUTPUT:
		1208	RETVAL
		1209
		1210	int
		1211	save (SV *coro, int new_save = -1)
		1212	CODE:
		1213	RETVAL = api_save (coro, new_save);
		1214	OUTPUT:
		1215	RETVAL
		1216
		1217	int
		1218	save_also (SV *coro_sv, int save_also)
		1219	CODE:
		1220	{
		1221	struct coro *coro = SvSTATE (coro_sv);
		1222	RETVAL = coro->save;
		1223	coro->save \|= save_also;
		1224	}
		1225	OUTPUT:
1064	RETVAL	1226	RETVAL
1065		1227
1066	void	1228	void
1067	_set_stacklevel (...)	1229	_set_stacklevel (...)
1068	ALIAS:	1230	ALIAS:
1069	Coro::State::transfer = 1	1231	Coro::State::transfer = 1
1070	Coro::schedule = 2	1232	Coro::schedule = 2
1071	Coro::cede = 3	1233	Coro::cede = 3
1072	Coro::Cont::yield = 4	1234	Coro::cede_notself = 4
1073	CODE:	1235	CODE:
1074	{	1236	{
1075	struct transfer_args ta;	1237	struct transfer_args ta;
1076		1238
1077	switch (ix)	1239	switch (ix)
1078	{	1240	{
1079	case 0:	1241	case 0:
1080	ta.prev = (struct coro )INT2PTR (coro_stack , SvIV (ST (0)));	1242	ta.prev = (struct coro )INT2PTR (coro_cctx , SvIV (ST (0)));
1081	ta.next = 0;	1243	ta.next = 0;
1082	ta.flags = TRANSFER_SET_STACKLEVEL;
1083	break;	1244	break;
1084		1245
1085	case 1:	1246	case 1:
1086	if (items != 3)	1247	if (items != 2)
1087	croak ("Coro::State::transfer(prev,next,flags) expects three arguments, not %d", items);	1248	croak ("Coro::State::transfer (prev,next) expects two arguments, not %d", items);
1088		1249
1089	prepare_transfer (&ta, ST (0), ST (1), SvIV (ST (2)));	1250	prepare_transfer (aTHX_ &ta, ST (0), ST (1));
1090	break;	1251	break;
1091		1252
1092	case 2:	1253	case 2:
1093	prepare_schedule (&ta);	1254	prepare_schedule (aTHX_ &ta);
1094	break;	1255	break;
1095		1256
1096	case 3:	1257	case 3:
1097	prepare_cede (&ta);	1258	prepare_cede (aTHX_ &ta);
1098	break;	1259	break;
1099		1260
1100	case 4:	1261	case 4:
1101	{	1262	if (!prepare_cede_notself (aTHX_ &ta))
1102	SV *yieldstack;	1263	XSRETURN_EMPTY;
1103	SV *sv;
1104	AV *defav = GvAV (PL_defgv);
1105		1264
1106	yieldstack = *hv_fetch (
1107	(HV *)SvRV (GvSV (coro_current)),
1108	"yieldstack", sizeof ("yieldstack") - 1,
1109	0
1110	);
1111
1112	/* set up @_ -- ugly */
1113	av_clear (defav);
1114	av_fill (defav, items - 1);
1115	while (items--)
1116	av_store (defav, items, SvREFCNT_inc (ST(items)));
1117
1118	sv = av_pop ((AV *)SvRV (yieldstack));
1119	ta.prev = SvSTATE (av_fetch ((AV )SvRV (sv), 0, 0));
1120	ta.next = SvSTATE (av_fetch ((AV )SvRV (sv), 1, 0));
1121	ta.flags = 0;
1122	SvREFCNT_dec (sv);
1123	}
1124	break;	1265	break;
1125
1126	}	1266	}
1127		1267
		1268	BARRIER;
1128	TRANSFER (ta);	1269	TRANSFER (ta);
1129	}
1130		1270
1131	void	1271	if (GIMME_V != G_VOID && ta.next != ta.prev)
1132	_clone_state_from (SV dst, SV src)	1272	XSRETURN_YES;
		1273	}
		1274
		1275	bool
		1276	_destroy (SV *coro_sv)
1133	CODE:	1277	CODE:
1134	{	1278	RETVAL = coro_state_destroy (aTHX_ SvSTATE (coro_sv));
1135	struct coro *coro_src = SvSTATE (src);	1279	OUTPUT:
1136		1280	RETVAL
1137	sv_unmagic (SvRV (dst), PERL_MAGIC_ext);
1138
1139	++coro_src->refcnt;
1140	sv_magicext (SvRV (dst), 0, PERL_MAGIC_ext, &coro_state_vtbl, (char *)coro_src, 0)->mg_flags \|= MGf_DUP;
1141	}
1142		1281
1143	void	1282	void
1144	_exit (code)	1283	_exit (code)
1145	int code	1284	int code
1146	PROTOTYPE: $	1285	PROTOTYPE: $
1147	CODE:	1286	CODE:
1148	_exit (code);	1287	_exit (code);
1149		1288
		1289	int
		1290	cctx_stacksize (int new_stacksize = 0)
		1291	CODE:
		1292	RETVAL = coro_stacksize;
		1293	if (new_stacksize)
		1294	coro_stacksize = new_stacksize;
		1295	OUTPUT:
		1296	RETVAL
		1297
		1298	int
		1299	cctx_count ()
		1300	CODE:
		1301	RETVAL = cctx_count;
		1302	OUTPUT:
		1303	RETVAL
		1304
		1305	int
		1306	cctx_idle ()
		1307	CODE:
		1308	RETVAL = cctx_idle;
		1309	OUTPUT:
		1310	RETVAL
		1311
1150	MODULE = Coro::State PACKAGE = Coro	1312	MODULE = Coro::State PACKAGE = Coro
1151		1313
1152	BOOT:	1314	BOOT:
1153	{	1315	{
1154	int i;	1316	int i;
…		…
1160	newCONSTSUB (coro_stash, "PRIO_NORMAL", newSViv (PRIO_NORMAL));	1322	newCONSTSUB (coro_stash, "PRIO_NORMAL", newSViv (PRIO_NORMAL));
1161	newCONSTSUB (coro_stash, "PRIO_LOW", newSViv (PRIO_LOW));	1323	newCONSTSUB (coro_stash, "PRIO_LOW", newSViv (PRIO_LOW));
1162	newCONSTSUB (coro_stash, "PRIO_IDLE", newSViv (PRIO_IDLE));	1324	newCONSTSUB (coro_stash, "PRIO_IDLE", newSViv (PRIO_IDLE));
1163	newCONSTSUB (coro_stash, "PRIO_MIN", newSViv (PRIO_MIN));	1325	newCONSTSUB (coro_stash, "PRIO_MIN", newSViv (PRIO_MIN));
1164		1326
1165	coro_current = gv_fetchpv ("Coro::current", TRUE, SVt_PV);	1327	coro_current = get_sv ("Coro::current", FALSE);
1166	coro_idle = gv_fetchpv ("Coro::idle" , TRUE, SVt_PV);	1328	SvREADONLY_on (coro_current);
1167		1329
1168	for (i = PRIO_MAX - PRIO_MIN + 1; i--; )	1330	for (i = PRIO_MAX - PRIO_MIN + 1; i--; )
1169	coro_ready[i] = newAV ();	1331	coro_ready[i] = newAV ();
1170		1332
1171	{	1333	{
1172	SV *sv = perl_get_sv("Coro::API", 1);	1334	SV *sv = perl_get_sv("Coro::API", 1);
1173		1335
1174	coroapi.schedule = api_schedule;	1336	coroapi.schedule = api_schedule;
		1337	coroapi.save = api_save;
1175	coroapi.cede = api_cede;	1338	coroapi.cede = api_cede;
		1339	coroapi.cede_notself = api_cede_notself;
1176	coroapi.ready = api_ready;	1340	coroapi.ready = api_ready;
		1341	coroapi.is_ready = api_is_ready;
1177	coroapi.nready = &coro_nready;	1342	coroapi.nready = &coro_nready;
1178	coroapi.current = coro_current;	1343	coroapi.current = coro_current;
1179		1344
1180	GCoroAPI = &coroapi;	1345	GCoroAPI = &coroapi;
1181	sv_setiv (sv, (IV)&coroapi);	1346	sv_setiv (sv, (IV)&coroapi);
1182	SvREADONLY_on (sv);	1347	SvREADONLY_on (sv);
1183	}	1348	}
1184	}	1349	}
		1350
		1351	void
		1352	_set_current (SV *current)
		1353	PROTOTYPE: $
		1354	CODE:
		1355	SvREFCNT_dec (SvRV (coro_current));
		1356	SvRV_set (coro_current, SvREFCNT_inc (SvRV (current)));
1185		1357
1186	int	1358	int
1187	prio (Coro::State coro, int newprio = 0)	1359	prio (Coro::State coro, int newprio = 0)
1188	ALIAS:	1360	ALIAS:
1189	nice = 1	1361	nice = 1
…		…
1192	RETVAL = coro->prio;	1364	RETVAL = coro->prio;
1193		1365
1194	if (items > 1)	1366	if (items > 1)
1195	{	1367	{
1196	if (ix)	1368	if (ix)
1197	newprio += coro->prio;	1369	newprio = coro->prio - newprio;
1198		1370
1199	if (newprio < PRIO_MIN) newprio = PRIO_MIN;	1371	if (newprio < PRIO_MIN) newprio = PRIO_MIN;
1200	if (newprio > PRIO_MAX) newprio = PRIO_MAX;	1372	if (newprio > PRIO_MAX) newprio = PRIO_MAX;
1201		1373
1202	coro->prio = newprio;	1374	coro->prio = newprio;
1203	}	1375	}
1204	}	1376	}
		1377	OUTPUT:
		1378	RETVAL
1205		1379
1206	void	1380	SV *
1207	ready (SV *self)	1381	ready (SV *self)
1208	PROTOTYPE: $	1382	PROTOTYPE: $
1209	CODE:	1383	CODE:
1210	api_ready (self);	1384	RETVAL = boolSV (api_ready (self));
		1385	OUTPUT:
		1386	RETVAL
		1387
		1388	SV *
		1389	is_ready (SV *self)
		1390	PROTOTYPE: $
		1391	CODE:
		1392	RETVAL = boolSV (api_is_ready (self));
		1393	OUTPUT:
		1394	RETVAL
1211		1395
1212	int	1396	int
1213	nready (...)	1397	nready (...)
1214	PROTOTYPE:	1398	PROTOTYPE:
1215	CODE:	1399	CODE:
…		…
1221		1405
1222	SV *	1406	SV *
1223	_get_state ()	1407	_get_state ()
1224	CODE:	1408	CODE:
1225	{	1409	{
1226	struct {	1410	struct io_state *data;
1227	int errorno;
1228	int laststype;
1229	int laststatval;
1230	Stat_t statcache;
1231	} data;
1232		1411
		1412	RETVAL = newSV (sizeof (struct io_state));
		1413	data = (struct io_state *)SvPVX (RETVAL);
		1414	SvCUR_set (RETVAL, sizeof (struct io_state));
		1415	SvPOK_only (RETVAL);
		1416
1233	data.errorno = errno;	1417	data->errorno = errno;
1234	data.laststype = PL_laststype;	1418	data->laststype = PL_laststype;
1235	data.laststatval = PL_laststatval;	1419	data->laststatval = PL_laststatval;
1236	data.statcache = PL_statcache;	1420	data->statcache = PL_statcache;
1237
1238	RETVAL = newSVpvn ((char *)&data, sizeof data);
1239	}	1421	}
1240	OUTPUT:	1422	OUTPUT:
1241	RETVAL	1423	RETVAL
1242		1424
1243	void	1425	void
1244	_set_state (char *data_)	1426	_set_state (char *data_)
1245	PROTOTYPE: $	1427	PROTOTYPE: $
1246	CODE:	1428	CODE:
1247	{	1429	{
1248	struct {	1430	struct io_state data = (void )data_;
1249	int errorno;
1250	int laststype;
1251	int laststatval;
1252	Stat_t statcache;
1253	} data = (void )data_;
1254		1431
1255	errno = data->errorno;	1432	errno = data->errorno;
1256	PL_laststype = data->laststype;	1433	PL_laststype = data->laststype;
1257	PL_laststatval = data->laststatval;	1434	PL_laststatval = data->laststatval;
1258	PL_statcache = data->statcache;	1435	PL_statcache = data->statcache;
1259	}	1436	}
		1437

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Comparing Coro/Coro/State.xs (file contents): Revision 1.102 by root, Mon Nov 27 01:28:03 2006 UTC vs. Revision 1.147 by root, Mon Mar 19 15:50:48 2007 UTC

Diff Legend

Comparing Coro/Coro/State.xs (file contents):
Revision 1.102 by root, Mon Nov 27 01:28:03 2006 UTC vs.
Revision 1.147 by root, Mon Mar 19 15:50:48 2007 UTC