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

Comparing Coro/Coro/State.xs (file contents):
Revision 1.106 by root, Mon Nov 27 02:08:55 2006 UTC vs.
Revision 1.152 by root, Thu Sep 20 12:02:25 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"
8		10
9	#if USE_VALGRIND
10	# include <valgrind/valgrind.h>
11	#endif
12
13	#define PERL_VERSION_ATLEAST(a,b,c) \
14	(PERL_REVISION > (a) \
15	\|\| (PERL_REVISION == (a) \
16	&& (PERL_VERSION > (b) \
17	\|\| (PERL_VERSION == (b) && PERLSUBVERSION >= (c)))))
18
19	#if !PERL_VERSION_ATLEAST (5,6,0)
20	# ifndef PL_ppaddr
21	# define PL_ppaddr ppaddr
22	# endif
23	# ifndef call_sv
24	# define call_sv perl_call_sv
25	# endif
26	# ifndef get_sv
27	# define get_sv perl_get_sv
28	# endif
29	# ifndef get_cv
30	# define get_cv perl_get_cv
31	# endif
32	# ifndef IS_PADGV
33	# define IS_PADGV(v) 0
34	# endif
35	# ifndef IS_PADCONST
36	# define IS_PADCONST(v) 0
37	# endif
38	#endif
39
40	#include <stdio.h>	11	#include <stdio.h>
41	#include <errno.h>	12	#include <errno.h>
42		13	#include <assert.h>
43	#if !__i386 && !__x86_64 && !__powerpc && !__m68k && !__alpha && !__mips && !__sparc64
44	# undef STACKGUARD
45	#endif
46
47	#ifndef STACKGUARD
48	# define STACKGUARD 0
49	#endif
50		14
51	#ifdef HAVE_MMAP	15	#ifdef HAVE_MMAP
52	# include <unistd.h>	16	# include <unistd.h>
53	# include <sys/mman.h>	17	# include <sys/mman.h>
54	# ifndef MAP_ANONYMOUS	18	# ifndef MAP_ANONYMOUS
69	#else	33	#else
70	# define PAGESIZE 0	34	# define PAGESIZE 0
71	# define BOOT_PAGESIZE (void)0	35	# define BOOT_PAGESIZE (void)0
72	#endif	36	#endif
73		37
		38	#if CORO_USE_VALGRIND
		39	# include <valgrind/valgrind.h>
		40	# define REGISTER_STACK(cctx,start,end) (cctx)->valgrind_id = VALGRIND_STACK_REGISTER ((start), (end))
		41	#else
		42	# define REGISTER_STACK(cctx,start,end)
		43	#endif
		44
		45	/* the maximum number of idle cctx that will be pooled */
		46	#define MAX_IDLE_CCTX 8
		47
		48	#define PERL_VERSION_ATLEAST(a,b,c) \
		49	(PERL_REVISION > (a) \
		50	\|\| (PERL_REVISION == (a) \
		51	&& (PERL_VERSION > (b) \
		52	\|\| (PERL_VERSION == (b) && PERLSUBVERSION >= (c)))))
		53
		54	#if !PERL_VERSION_ATLEAST (5,6,0)
		55	# ifndef PL_ppaddr
		56	# define PL_ppaddr ppaddr
		57	# endif
		58	# ifndef call_sv
		59	# define call_sv perl_call_sv
		60	# endif
		61	# ifndef get_sv
		62	# define get_sv perl_get_sv
		63	# endif
		64	# ifndef get_cv
		65	# define get_cv perl_get_cv
		66	# endif
		67	# ifndef IS_PADGV
		68	# define IS_PADGV(v) 0
		69	# endif
		70	# ifndef IS_PADCONST
		71	# define IS_PADCONST(v) 0
		72	# endif
		73	#endif
		74
		75	/* 5.8.7 */
		76	#ifndef SvRV_set
		77	# define SvRV_set(s,v) SvRV(s) = (v)
		78	#endif
		79
		80	#if !__i386 && !__x86_64 && !__powerpc && !__m68k && !__alpha && !__mips && !__sparc64
		81	# undef CORO_STACKGUARD
		82	#endif
		83
		84	#ifndef CORO_STACKGUARD
		85	# define CORO_STACKGUARD 0
		86	#endif
		87
		88	/* prefer perl internal functions over our own? */
		89	#ifndef CORO_PREFER_PERL_FUNCTIONS
		90	# define CORO_PREFER_PERL_FUNCTIONS 0
		91	#endif
		92
74	/* 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
75	* 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
76	* and should be unique. */	95	* and should be unique. */
77	#define dSTACKLEVEL int stacklevel	96	#define dSTACKLEVEL int stacklevel
78	#define STACKLEVEL ((void *)&stacklevel)	97	#define STACKLEVEL ((void *)&stacklevel)
79		98
80	#define IN_DESTRUCT (PL_main_cv == Nullcv)	99	#define IN_DESTRUCT (PL_main_cv == Nullcv)
81		100
82	#if __GNUC__ >= 3	101	#if __GNUC__ >= 3
83	# define attribute(x) __attribute__(x)	102	# define attribute(x) __attribute__(x)
		103	# define BARRIER __asm__ __volatile__ ("" : : : "memory")
84	#else	104	#else
85	# define attribute(x)	105	# define attribute(x)
		106	# define BARRIER
86	#endif	107	#endif
87		108
88	#define NOINLINE attribute ((noinline))	109	#define NOINLINE attribute ((noinline))
89		110
90	#include "CoroAPI.h"	111	#include "CoroAPI.h"
91
92	#define TRANSFER_SET_STACKLEVEL 0x8bfbfbfb /* magic cookie */
93		112
94	#ifdef USE_ITHREADS	113	#ifdef USE_ITHREADS
95	static perl_mutex coro_mutex;	114	static perl_mutex coro_mutex;
96	# define LOCK do { MUTEX_LOCK (&coro_mutex); } while (0)	115	# define LOCK do { MUTEX_LOCK (&coro_mutex); } while (0)
97	# define UNLOCK do { MUTEX_UNLOCK (&coro_mutex); } while (0)	116	# define UNLOCK do { MUTEX_UNLOCK (&coro_mutex); } while (0)
98	#else	117	#else
99	# define LOCK (void)0	118	# define LOCK (void)0
100	# define UNLOCK (void)0	119	# define UNLOCK (void)0
101	#endif	120	#endif
102		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;
103	static struct CoroAPI coroapi;	132	static struct CoroAPI coroapi;
104	static AV main_mainstack; / used to differentiate between $main and others */	133	static AV main_mainstack; / used to differentiate between $main and others */
		134	static JMPENV *main_top_env;
105	static HV coro_state_stash, coro_stash;	135	static HV coro_state_stash, coro_stash;
106	static SV coro_mortal; / will be freed after next transfer */	136	static SV coro_mortal; / will be freed after next transfer */
		137
		138	static struct coro_cctx *cctx_first;
		139	static int cctx_count, cctx_idle;
107		140
108	/* this is a structure representing a c-level coroutine */	141	/* this is a structure representing a c-level coroutine */
109	typedef struct coro_cctx {	142	typedef struct coro_cctx {
110	struct coro_cctx *next;	143	struct coro_cctx *next;
111		144
112	/* the stack */	145	/* the stack */
113	void *sptr;	146	void *sptr;
114	long ssize; /* positive == mmap, otherwise malloc */	147	size_t ssize;
115		148
116	/* cpu state */	149	/* cpu state */
117	void idle_sp; / sp of top-level transfer/schedule/cede call */	150	void idle_sp; / sp of top-level transfer/schedule/cede call */
		151	JMPENV idle_te; / same as idle_sp, but for top_env, TODO: remove once stable */
118	JMPENV *top_env;	152	JMPENV *top_env;
119	coro_context cctx;	153	coro_context cctx;
120		154
121	#if USE_VALGRIND	155	#if CORO_USE_VALGRIND
122	int valgrind_id;	156	int valgrind_id;
123	#endif	157	#endif
		158	char inuse, mapped;
124	} coro_cctx;	159	} coro_cctx;
		160
		161	enum {
		162	CF_RUNNING = 0x0001, /* coroutine is running */
		163	CF_READY = 0x0002, /* coroutine is ready */
		164	CF_NEW = 0x0004, /* has never been switched to */
		165	CF_DESTROYED = 0x0008, /* coroutine data has been freed */
		166	};
125		167
126	/* this is a structure representing a perl-level coroutine */	168	/* this is a structure representing a perl-level coroutine */
127	struct coro {	169	struct coro {
128	/* the c coroutine allocated to this perl coroutine, if any */	170	/* the c coroutine allocated to this perl coroutine, if any */
129	coro_cctx *cctx;	171	coro_cctx *cctx;
130		172
131	/* data associated with this coroutine (initial args) */	173	/* data associated with this coroutine (initial args) */
132	AV *args;	174	AV *args;
133	int refcnt;	175	int refcnt;
		176	int save; /* CORO_SAVE flags */
		177	int flags; /* CF_ flags */
134		178
135	/* optionally saved, might be zero */	179	/* optionally saved, might be zero */
136	AV *defav;	180	AV defav; / @_ */
137	SV *defsv;	181	SV defsv; / $_ */
138	SV *errsv;	182	SV errsv; / $@ */
		183	GV deffh; / default filehandle */
		184	SV irssv; / $/ */
		185	SV irssv_sv; / real $/ cache */
139		186
140	/* saved global state not related to stacks */	187	#define VAR(name,type) type name;
141	U8 dowarn;	188	# include "state.h"
142	I32 in_eval;	189	#undef VAR
143
144	/* the stacks and related info (callchain etc..) */
145	PERL_SI *curstackinfo;
146	AV *curstack;
147	AV *mainstack;
148	SV **stack_sp;
149	OP *op;
150	SV **curpad;
151	AV *comppad;
152	CV *compcv;
153	SV **stack_base;
154	SV **stack_max;
155	SV **tmps_stack;
156	I32 tmps_floor;
157	I32 tmps_ix;
158	I32 tmps_max;
159	I32 *markstack;
160	I32 *markstack_ptr;
161	I32 *markstack_max;
162	I32 *scopestack;
163	I32 scopestack_ix;
164	I32 scopestack_max;
165	ANY *savestack;
166	I32 savestack_ix;
167	I32 savestack_max;
168	OP **retstack;
169	I32 retstack_ix;
170	I32 retstack_max;
171	PMOP *curpm;
172	COP *curcop;
173		190
174	/* coro process data */	191	/* coro process data */
175	int prio;	192	int prio;
		193
		194	/* linked list */
		195	struct coro next, prev;
		196	HV hv; / the perl hash associated with this coro, if any */
176	};	197	};
177		198
178	typedef struct coro *Coro__State;	199	typedef struct coro *Coro__State;
179	typedef struct coro *Coro__State_or_hashref;	200	typedef struct coro *Coro__State_or_hashref;
180		201
		202	/ Coro ******************************************************************/
		203
		204	#define PRIO_MAX 3
		205	#define PRIO_HIGH 1
		206	#define PRIO_NORMAL 0
		207	#define PRIO_LOW -1
		208	#define PRIO_IDLE -3
		209	#define PRIO_MIN -4
		210
		211	/* for Coro.pm */
		212	static SV *coro_current;
		213	static AV *coro_ready [PRIO_MAX-PRIO_MIN+1];
		214	static int coro_nready;
		215	static struct coro *first;
		216
		217	/ lowlevel stuff ********************************************************/
		218
181	static AV *	219	static AV *
182	coro_clone_padlist (CV *cv)	220	coro_clone_padlist (pTHX_ CV *cv)
183	{	221	{
184	AV *padlist = CvPADLIST (cv);	222	AV *padlist = CvPADLIST (cv);
185	AV newpadlist, newpad;	223	AV newpadlist, newpad;
186		224
187	newpadlist = newAV ();	225	newpadlist = newAV ();
…		…
199		237
200	return newpadlist;	238	return newpadlist;
201	}	239	}
202		240
203	static void	241	static void
204	free_padlist (AV *padlist)	242	free_padlist (pTHX_ AV *padlist)
205	{	243	{
206	/* may be during global destruction */	244	/* may be during global destruction */
207	if (SvREFCNT (padlist))	245	if (SvREFCNT (padlist))
208	{	246	{
209	I32 i = AvFILLp (padlist);	247	I32 i = AvFILLp (padlist);
…		…
230	AV *padlist;	268	AV *padlist;
231	AV av = (AV )mg->mg_obj;	269	AV av = (AV )mg->mg_obj;
232		270
233	/* casting is fun. */	271	/* casting is fun. */
234	while (&PL_sv_undef != (SV )(padlist = (AV )av_pop (av)))	272	while (&PL_sv_undef != (SV )(padlist = (AV )av_pop (av)))
235	free_padlist (padlist);	273	free_padlist (aTHX_ padlist);
236		274
237	SvREFCNT_dec (av);	275	SvREFCNT_dec (av);
238		276
239	return 0;	277	return 0;
240	}	278	}
241		279
242	#define PERL_MAGIC_coro PERL_MAGIC_ext	280	#define PERL_MAGIC_coro PERL_MAGIC_ext
243		281
244	static MGVTBL vtbl_coro = {0, 0, 0, 0, coro_cv_free};	282	static MGVTBL vtbl_coro = {0, 0, 0, 0, coro_cv_free};
245		283
		284	#define CORO_MAGIC(cv) \
		285	SvMAGIC (cv) \
		286	? SvMAGIC (cv)->mg_type == PERL_MAGIC_coro \
		287	? SvMAGIC (cv) \
		288	: mg_find ((SV *)cv, PERL_MAGIC_coro) \
		289	: 0
		290
246	/* the next two functions merely cache the padlists */	291	/* the next two functions merely cache the padlists */
247	static void	292	static void
248	get_padlist (CV *cv)	293	get_padlist (pTHX_ CV *cv)
249	{	294	{
250	MAGIC mg = mg_find ((SV )cv, PERL_MAGIC_coro);	295	MAGIC *mg = CORO_MAGIC (cv);
		296	AV *av;
251		297
252	if (mg && AvFILLp ((AV *)mg->mg_obj) >= 0)	298	if (mg && AvFILLp ((av = (AV *)mg->mg_obj)) >= 0)
253	CvPADLIST (cv) = (AV )av_pop ((AV )mg->mg_obj);	299	CvPADLIST (cv) = (AV *)AvARRAY (av)[AvFILLp (av)--];
254	else	300	else
255	{	301	{
256	#if 0	302	#if CORO_PREFER_PERL_FUNCTIONS
257	/* this is probably cleaner, but also slower? */	303	/* this is probably cleaner, but also slower? */
258	CV *cp = Perl_cv_clone (cv);	304	CV *cp = Perl_cv_clone (cv);
259	CvPADLIST (cv) = CvPADLIST (cp);	305	CvPADLIST (cv) = CvPADLIST (cp);
260	CvPADLIST (cp) = 0;	306	CvPADLIST (cp) = 0;
261	SvREFCNT_dec (cp);	307	SvREFCNT_dec (cp);
262	#else	308	#else
263	CvPADLIST (cv) = coro_clone_padlist (cv);	309	CvPADLIST (cv) = coro_clone_padlist (aTHX_ cv);
264	#endif	310	#endif
265	}	311	}
266	}	312	}
267		313
268	static void	314	static void
269	put_padlist (CV *cv)	315	put_padlist (pTHX_ CV *cv)
270	{	316	{
271	MAGIC mg = mg_find ((SV )cv, PERL_MAGIC_coro);	317	MAGIC *mg = CORO_MAGIC (cv);
		318	AV *av;
272		319
273	if (!mg)	320	if (!mg)
274	{	321	{
275	sv_magic ((SV *)cv, 0, PERL_MAGIC_coro, 0, 0);	322	sv_magic ((SV *)cv, 0, PERL_MAGIC_coro, 0, 0);
276	mg = mg_find ((SV *)cv, PERL_MAGIC_coro);	323	mg = mg_find ((SV *)cv, PERL_MAGIC_coro);
277	mg->mg_virtual = &vtbl_coro;	324	mg->mg_virtual = &vtbl_coro;
278	mg->mg_obj = (SV *)newAV ();	325	mg->mg_obj = (SV *)newAV ();
279	}	326	}
280		327
281	av_push ((AV )mg->mg_obj, (SV )CvPADLIST (cv));	328	av = (AV *)mg->mg_obj;
		329
		330	if (AvFILLp (av) >= AvMAX (av))
		331	av_extend (av, AvMAX (av) + 1);
		332
		333	AvARRAY (av)[++AvFILLp (av)] = (SV *)CvPADLIST (cv);
282	}	334	}
		335
		336	/ load & save, init *****************************************************/
283		337
284	#define SB do {	338	#define SB do {
285	#define SE } while (0)	339	#define SE } while (0)
286		340
287	#define LOAD(state) load_state((state));
288	#define SAVE(state,flags) save_state((state),(flags));
289
290	#define REPLACE_SV(sv,val) SB SvREFCNT_dec(sv); (sv) = (val); (val) = 0; SE	341	#define REPLACE_SV(sv,val) SB SvREFCNT_dec (sv); (sv) = (val); (val) = 0; SE
291		342
292	static void	343	static void
293	load_state(Coro__State c)	344	load_perl (pTHX_ Coro__State c)
294	{	345	{
295	PL_dowarn = c->dowarn;	346	#define VAR(name,type) PL_ ## name = c->name;
296	PL_in_eval = c->in_eval;	347	# include "state.h"
297		348	#undef VAR
298	PL_curstackinfo = c->curstackinfo;
299	PL_curstack = c->curstack;
300	PL_mainstack = c->mainstack;
301	PL_stack_sp = c->stack_sp;
302	PL_op = c->op;
303	PL_curpad = c->curpad;
304	PL_comppad = c->comppad;
305	PL_compcv = c->compcv;
306	PL_stack_base = c->stack_base;
307	PL_stack_max = c->stack_max;
308	PL_tmps_stack = c->tmps_stack;
309	PL_tmps_floor = c->tmps_floor;
310	PL_tmps_ix = c->tmps_ix;
311	PL_tmps_max = c->tmps_max;
312	PL_markstack = c->markstack;
313	PL_markstack_ptr = c->markstack_ptr;
314	PL_markstack_max = c->markstack_max;
315	PL_scopestack = c->scopestack;
316	PL_scopestack_ix = c->scopestack_ix;
317	PL_scopestack_max = c->scopestack_max;
318	PL_savestack = c->savestack;
319	PL_savestack_ix = c->savestack_ix;
320	PL_savestack_max = c->savestack_max;
321	#if !PERL_VERSION_ATLEAST (5,9,0)
322	PL_retstack = c->retstack;
323	PL_retstack_ix = c->retstack_ix;
324	PL_retstack_max = c->retstack_max;
325	#endif
326	PL_curpm = c->curpm;
327	PL_curcop = c->curcop;
328		349
329	if (c->defav) REPLACE_SV (GvAV (PL_defgv), c->defav);	350	if (c->defav) REPLACE_SV (GvAV (PL_defgv), c->defav);
330	if (c->defsv) REPLACE_SV (DEFSV , c->defsv);	351	if (c->defsv) REPLACE_SV (DEFSV , c->defsv);
331	if (c->errsv) REPLACE_SV (ERRSV , c->errsv);	352	if (c->errsv) REPLACE_SV (ERRSV , c->errsv);
		353	if (c->deffh) REPLACE_SV (PL_defoutgv , c->deffh);
		354
		355	if (c->irssv)
		356	{
		357	if (c->irssv == PL_rs \|\| sv_eq (PL_rs, c->irssv))
		358	{
		359	SvREFCNT_dec (c->irssv);
		360	c->irssv = 0;
		361	}
		362	else
		363	{
		364	REPLACE_SV (PL_rs, c->irssv);
		365	if (!c->irssv_sv) c->irssv_sv = get_sv ("/", 0);
		366	sv_setsv (c->irssv_sv, PL_rs);
		367	}
		368	}
332		369
333	{	370	{
334	dSP;	371	dSP;
335	CV *cv;	372	CV *cv;
336		373
337	/* now do the ugly restore mess */	374	/* now do the ugly restore mess */
338	while ((cv = (CV *)POPs))	375	while ((cv = (CV *)POPs))
339	{	376	{
340	AV padlist = (AV )POPs;
341
342	if (padlist)
343	{
344	put_padlist (cv); /* mark this padlist as available */	377	put_padlist (aTHX_ cv); /* mark this padlist as available */
345	CvPADLIST(cv) = padlist;	378	CvDEPTH (cv) = PTR2IV (POPs);
346	}	379	CvPADLIST (cv) = (AV *)POPs;
347
348	++CvDEPTH(cv);
349	}	380	}
350		381
351	PUTBACK;	382	PUTBACK;
352	}	383	}
353	}	384	}
354		385
355	static void	386	static void
356	save_state(Coro__State c, int flags)	387	save_perl (pTHX_ Coro__State c)
357	{	388	{
358	{	389	{
359	dSP;	390	dSP;
360	I32 cxix = cxstack_ix;	391	I32 cxix = cxstack_ix;
361	PERL_CONTEXT *ccstk = cxstack;	392	PERL_CONTEXT *ccstk = cxstack;
…		…
364	/*	395	/*
365	* the worst thing you can imagine happens first - we have to save	396	* the worst thing you can imagine happens first - we have to save
366	* (and reinitialize) all cv's in the whole callchain :(	397	* (and reinitialize) all cv's in the whole callchain :(
367	*/	398	*/
368		399
		400	EXTEND (SP, 3 + 1);
369	PUSHs (Nullsv);	401	PUSHs (Nullsv);
370	/* this loop was inspired by pp_caller */	402	/* this loop was inspired by pp_caller */
371	for (;;)	403	for (;;)
372	{	404	{
373	while (cxix >= 0)	405	while (cxix >= 0)
374	{	406	{
375	PERL_CONTEXT *cx = &ccstk[cxix--];	407	PERL_CONTEXT *cx = &ccstk[cxix--];
376		408
377	if (CxTYPE(cx) == CXt_SUB)	409	if (CxTYPE (cx) == CXt_SUB \|\| CxTYPE (cx) == CXt_FORMAT)
378	{	410	{
379	CV *cv = cx->blk_sub.cv;	411	CV *cv = cx->blk_sub.cv;
		412
380	if (CvDEPTH(cv))	413	if (CvDEPTH (cv))
381	{	414	{
382	EXTEND (SP, CvDEPTH(cv)*2);	415	EXTEND (SP, 3);
383
384	while (--CvDEPTH(cv))
385	{
386	/* this tells the restore code to increment CvDEPTH */
387	PUSHs (Nullsv);
388	PUSHs ((SV *)cv);
389	}
390
391	PUSHs ((SV *)CvPADLIST(cv));	416	PUSHs ((SV *)CvPADLIST (cv));
		417	PUSHs (INT2PTR (SV *, CvDEPTH (cv)));
392	PUSHs ((SV *)cv);	418	PUSHs ((SV *)cv);
393		419
		420	CvDEPTH (cv) = 0;
394	get_padlist (cv);	421	get_padlist (aTHX_ cv);
395	}	422	}
396	}	423	}
397	#ifdef CXt_FORMAT
398	else if (CxTYPE(cx) == CXt_FORMAT)
399	{
400	/* I never used formats, so how should I know how these are implemented? */
401	/* my bold guess is as a simple, plain sub... */
402	croak ("CXt_FORMAT not yet handled. Don't switch coroutines from within formats");
403	}
404	#endif
405	}	424	}
406		425
407	if (top_si->si_type == PERLSI_MAIN)	426	if (top_si->si_type == PERLSI_MAIN)
408	break;	427	break;
409		428
…		…
413	}	432	}
414		433
415	PUTBACK;	434	PUTBACK;
416	}	435	}
417		436
418	c->defav = flags & TRANSFER_SAVE_DEFAV ? (AV *)SvREFCNT_inc (GvAV (PL_defgv)) : 0;	437	c->defav = c->save & CORO_SAVE_DEFAV ? (AV *)SvREFCNT_inc (GvAV (PL_defgv)) : 0;
419	c->defsv = flags & TRANSFER_SAVE_DEFSV ? SvREFCNT_inc (DEFSV) : 0;	438	c->defsv = c->save & CORO_SAVE_DEFSV ? SvREFCNT_inc (DEFSV) : 0;
420	c->errsv = flags & TRANSFER_SAVE_ERRSV ? SvREFCNT_inc (ERRSV) : 0;	439	c->errsv = c->save & CORO_SAVE_ERRSV ? SvREFCNT_inc (ERRSV) : 0;
		440	c->deffh = c->save & CORO_SAVE_DEFFH ? (GV *)SvREFCNT_inc (PL_defoutgv) : 0;
		441	c->irssv = c->save & CORO_SAVE_IRSSV ? SvREFCNT_inc (PL_rs) : 0;
421		442
422	c->dowarn = PL_dowarn;	443	#define VAR(name,type)c->name = PL_ ## name;
423	c->in_eval = PL_in_eval;	444	# include "state.h"
424		445	#undef VAR
425	c->curstackinfo = PL_curstackinfo;
426	c->curstack = PL_curstack;
427	c->mainstack = PL_mainstack;
428	c->stack_sp = PL_stack_sp;
429	c->op = PL_op;
430	c->curpad = PL_curpad;
431	c->comppad = PL_comppad;
432	c->compcv = PL_compcv;
433	c->stack_base = PL_stack_base;
434	c->stack_max = PL_stack_max;
435	c->tmps_stack = PL_tmps_stack;
436	c->tmps_floor = PL_tmps_floor;
437	c->tmps_ix = PL_tmps_ix;
438	c->tmps_max = PL_tmps_max;
439	c->markstack = PL_markstack;
440	c->markstack_ptr = PL_markstack_ptr;
441	c->markstack_max = PL_markstack_max;
442	c->scopestack = PL_scopestack;
443	c->scopestack_ix = PL_scopestack_ix;
444	c->scopestack_max = PL_scopestack_max;
445	c->savestack = PL_savestack;
446	c->savestack_ix = PL_savestack_ix;
447	c->savestack_max = PL_savestack_max;
448	#if !PERL_VERSION_ATLEAST (5,9,0)
449	c->retstack = PL_retstack;
450	c->retstack_ix = PL_retstack_ix;
451	c->retstack_max = PL_retstack_max;
452	#endif
453	c->curpm = PL_curpm;
454	c->curcop = PL_curcop;
455	}	446	}
456		447
457	/*	448	/*
458	* allocate various perl stacks. This is an exact copy	449	* allocate various perl stacks. This is an exact copy
459	* of perl.c:init_stacks, except that it uses less memory	450	* of perl.c:init_stacks, except that it uses less memory
460	* on the (sometimes correct) assumption that coroutines do	451	* on the (sometimes correct) assumption that coroutines do
461	* not usually need a lot of stackspace.	452	* not usually need a lot of stackspace.
462	*/	453	*/
		454	#if CORO_PREFER_PERL_FUNCTIONS
		455	# define coro_init_stacks init_stacks
		456	#else
463	static void	457	static void
464	coro_init_stacks ()	458	coro_init_stacks (pTHX)
465	{	459	{
466	PL_curstackinfo = new_stackinfo(96, 1024/sizeof(PERL_CONTEXT) - 1);	460	PL_curstackinfo = new_stackinfo(128, 1024/sizeof(PERL_CONTEXT));
467	PL_curstackinfo->si_type = PERLSI_MAIN;	461	PL_curstackinfo->si_type = PERLSI_MAIN;
468	PL_curstack = PL_curstackinfo->si_stack;	462	PL_curstack = PL_curstackinfo->si_stack;
469	PL_mainstack = PL_curstack; /* remember in case we switch stacks */	463	PL_mainstack = PL_curstack; /* remember in case we switch stacks */
470		464
471	PL_stack_base = AvARRAY(PL_curstack);	465	PL_stack_base = AvARRAY(PL_curstack);
472	PL_stack_sp = PL_stack_base;	466	PL_stack_sp = PL_stack_base;
473	PL_stack_max = PL_stack_base + AvMAX(PL_curstack);	467	PL_stack_max = PL_stack_base + AvMAX(PL_curstack);
474		468
475	New(50,PL_tmps_stack,96,SV*);	469	New(50,PL_tmps_stack,128,SV*);
476	PL_tmps_floor = -1;	470	PL_tmps_floor = -1;
477	PL_tmps_ix = -1;	471	PL_tmps_ix = -1;
478	PL_tmps_max = 96;	472	PL_tmps_max = 128;
479		473
480	New(54,PL_markstack,16,I32);	474	New(54,PL_markstack,32,I32);
481	PL_markstack_ptr = PL_markstack;	475	PL_markstack_ptr = PL_markstack;
482	PL_markstack_max = PL_markstack + 16;	476	PL_markstack_max = PL_markstack + 32;
483		477
484	#ifdef SET_MARK_OFFSET	478	#ifdef SET_MARK_OFFSET
485	SET_MARK_OFFSET;	479	SET_MARK_OFFSET;
486	#endif	480	#endif
487		481
488	New(54,PL_scopestack,16,I32);	482	New(54,PL_scopestack,32,I32);
489	PL_scopestack_ix = 0;	483	PL_scopestack_ix = 0;
490	PL_scopestack_max = 16;	484	PL_scopestack_max = 32;
491		485
492	New(54,PL_savestack,96,ANY);	486	New(54,PL_savestack,64,ANY);
493	PL_savestack_ix = 0;	487	PL_savestack_ix = 0;
494	PL_savestack_max = 96;	488	PL_savestack_max = 64;
495		489
496	#if !PERL_VERSION_ATLEAST (5,9,0)	490	#if !PERL_VERSION_ATLEAST (5,9,0)
497	New(54,PL_retstack,8,OP*);	491	New(54,PL_retstack,16,OP*);
498	PL_retstack_ix = 0;	492	PL_retstack_ix = 0;
499	PL_retstack_max = 8;	493	PL_retstack_max = 16;
500	#endif	494	#endif
501	}	495	}
		496	#endif
502		497
503	/*	498	/*
504	* destroy the stacks, the callchain etc...	499	* destroy the stacks, the callchain etc...
505	*/	500	*/
506	static void	501	static void
507	coro_destroy_stacks ()	502	coro_destroy_stacks (pTHX)
508	{	503	{
509	if (!IN_DESTRUCT)	504	if (!IN_DESTRUCT)
510	{	505	{
511	/* is this ugly, I ask? */	506	/* restore all saved variables and stuff */
512	LEAVE_SCOPE (0);	507	LEAVE_SCOPE (0);
		508	assert (PL_tmps_floor == -1);
513		509
514	/* sure it is, but more important: is it correct?? :/ */	510	/* free all temporaries */
515	FREETMPS;	511	FREETMPS;
		512	assert (PL_tmps_ix == -1);
516		513
		514	/* unwind all extra stacks */
517	/POPSTACK_TO (PL_mainstack);//D//use/	515	POPSTACK_TO (PL_mainstack);
		516
		517	/* unwind main stack */
		518	dounwind (-1);
518	}	519	}
519		520
520	while (PL_curstackinfo->si_next)	521	while (PL_curstackinfo->si_next)
521	PL_curstackinfo = PL_curstackinfo->si_next;	522	PL_curstackinfo = PL_curstackinfo->si_next;
522		523
523	while (PL_curstackinfo)	524	while (PL_curstackinfo)
524	{	525	{
525	PERL_SI *p = PL_curstackinfo->si_prev;	526	PERL_SI *p = PL_curstackinfo->si_prev;
526		527
527	{ /D//remove/
528	dSP;
529	SWITCHSTACK (PL_curstack, PL_curstackinfo->si_stack);
530	PUTBACK; /* possibly superfluous */
531	}
532
533	if (!IN_DESTRUCT)	528	if (!IN_DESTRUCT)
534	{
535	dounwind (-1);/D//remove/
536	SvREFCNT_dec (PL_curstackinfo->si_stack);	529	SvREFCNT_dec (PL_curstackinfo->si_stack);
537	}
538		530
539	Safefree (PL_curstackinfo->si_cxstack);	531	Safefree (PL_curstackinfo->si_cxstack);
540	Safefree (PL_curstackinfo);	532	Safefree (PL_curstackinfo);
541	PL_curstackinfo = p;	533	PL_curstackinfo = p;
542	}	534	}
…		…
548	#if !PERL_VERSION_ATLEAST (5,9,0)	540	#if !PERL_VERSION_ATLEAST (5,9,0)
549	Safefree (PL_retstack);	541	Safefree (PL_retstack);
550	#endif	542	#endif
551	}	543	}
552		544
		545	static size_t
		546	coro_rss (struct coro *coro)
		547	{
		548	size_t rss = sizeof (coro);
		549
		550	if (coro->mainstack)
		551	{
		552	rss += sizeof (coro->curstackinfo);
		553	rss += sizeof (struct xpvav) + (1 + AvFILL (coro->curstackinfo->si_stack)) * sizeof (SV *);
		554	rss += (coro->curstackinfo->si_cxmax + 1) * sizeof (PERL_CONTEXT);
		555
		556	rss += sizeof (struct xpvav) + (1 + AvFILL (coro->curstack)) * sizeof (SV *);
		557
		558	rss += coro->tmps_max * sizeof (SV *);
		559
		560	rss += (coro->markstack_max - coro->markstack_ptr) * sizeof (I32);
		561
		562	rss += coro->scopestack_max * sizeof (I32);
		563
		564	rss += coro->savestack_max * sizeof (ANY);
		565
		566	#if !PERL_VERSION_ATLEAST (5,9,0)
		567	rss += coro->retstack_max * sizeof (OP *);
		568	#endif
		569	}
		570
		571	return rss;
		572	}
		573
		574	/ coroutine stack handling **********************************************/
		575
553	static void	576	static void
554	setup_coro (struct coro *coro)	577	setup_coro (pTHX_ struct coro *coro)
555	{	578	{
556	/*	579	/*
557	* emulate part of the perl startup here.	580	* emulate part of the perl startup here.
558	*/	581	*/
559
560	coro_init_stacks ();	582	coro_init_stacks (aTHX);
561		583
		584	PL_curcop = &PL_compiling;
		585	PL_in_eval = EVAL_NULL;
562	PL_curcop = 0;	586	PL_comppad = 0;
563	PL_in_eval = 0;
564	PL_curpm = 0;	587	PL_curpm = 0;
		588	PL_localizing = 0;
		589	PL_dirty = 0;
		590	PL_restartop = 0;
565		591
566	{	592	{
567	dSP;	593	dSP;
568	LOGOP myop;	594	LOGOP myop;
569		595
570	/* I have no idea why this is needed, but it is */
571	PUSHMARK (SP);
572
573	SvREFCNT_dec (GvAV (PL_defgv));	596	SvREFCNT_dec (GvAV (PL_defgv));
574	GvAV (PL_defgv) = coro->args; coro->args = 0;	597	GvAV (PL_defgv) = coro->args; coro->args = 0;
575		598
576	Zero (&myop, 1, LOGOP);	599	Zero (&myop, 1, LOGOP);
577	myop.op_next = Nullop;	600	myop.op_next = Nullop;
578	myop.op_flags = OPf_WANT_VOID;	601	myop.op_flags = OPf_WANT_VOID;
579		602
		603	PUSHMARK (SP);
		604	XPUSHs (av_shift (GvAV (PL_defgv)));
		605	PUTBACK;
580	PL_op = (OP *)&myop;	606	PL_op = (OP *)&myop;
581
582	PUSHMARK (SP);
583	XPUSHs ((SV *)get_cv ("Coro::State::coro_init", FALSE));
584	PUTBACK;
585	PL_op = PL_ppaddr[OP_ENTERSUB](aTHX);	607	PL_op = PL_ppaddr[OP_ENTERSUB](aTHX);
586	SPAGAIN;	608	SPAGAIN;
587
588	ENTER; /* necessary e.g. for dounwind */
589	}	609	}
590	}
591		610
		611	ENTER; /* necessary e.g. for dounwind */
		612	}
		613
592	static void	614	static void
593	free_coro_mortal ()	615	free_coro_mortal (pTHX)
594	{	616	{
595	if (coro_mortal)	617	if (coro_mortal)
596	{	618	{
597	SvREFCNT_dec (coro_mortal);	619	SvREFCNT_dec (coro_mortal);
598	coro_mortal = 0;	620	coro_mortal = 0;
599	}	621	}
600	}	622	}
601		623
		624	/* inject a fake call to Coro::State::_cctx_init into the execution */
		625	/* _cctx_init should be careful, as it could be called at almost any time */
		626	/* during execution of a perl program */
602	static void NOINLINE	627	static void NOINLINE
603	prepare_cctx (coro_cctx *cctx)	628	prepare_cctx (pTHX_ coro_cctx *cctx)
604	{	629	{
605	dSP;	630	dSP;
606	LOGOP myop;	631	LOGOP myop;
607		632
608	Zero (&myop, 1, LOGOP);	633	Zero (&myop, 1, LOGOP);
609	myop.op_next = PL_op;	634	myop.op_next = PL_op;
610	myop.op_flags = OPf_WANT_VOID;	635	myop.op_flags = OPf_WANT_VOID \| OPf_STACKED;
611
612	sv_setiv (get_sv ("Coro::State::cctx", FALSE), PTR2IV (cctx));
613		636
614	PUSHMARK (SP);	637	PUSHMARK (SP);
		638	EXTEND (SP, 2);
		639	PUSHs (sv_2mortal (newSViv (PTR2IV (cctx))));
615	XPUSHs ((SV *)get_cv ("Coro::State::cctx_init", FALSE));	640	PUSHs ((SV *)get_cv ("Coro::State::_cctx_init", FALSE));
616	PUTBACK;	641	PUTBACK;
		642	PL_op = (OP *)&myop;
617	PL_restartop = PL_ppaddr[OP_ENTERSUB](aTHX);	643	PL_op = PL_ppaddr[OP_ENTERSUB](aTHX);
618	SPAGAIN;	644	SPAGAIN;
619	}	645	}
620		646
		647	/*
		648	* this is a _very_ stripped down perl interpreter ;)
		649	*/
621	static void	650	static void
622	coro_run (void *arg)	651	coro_run (void *arg)
623	{	652	{
		653	dTHX;
		654
624	/* coro_run is the alternative epilogue of transfer() */	655	/* coro_run is the alternative tail of transfer(), so unlock here. */
625	UNLOCK;	656	UNLOCK;
626		657
		658	PL_top_env = &PL_start_env;
		659
		660	/* inject a fake subroutine call to cctx_init */
		661	prepare_cctx (aTHX_ (coro_cctx *)arg);
		662
		663	/* somebody or something will hit me for both perl_run and PL_restartop */
		664	PL_restartop = PL_op;
		665	perl_run (PL_curinterp);
		666
627	/*	667	/*
628	* this is a _very_ stripped down perl interpreter ;)	668	* If perl-run returns we assume exit() was being called or the coro
		669	* fell off the end, which seems to be the only valid (non-bug)
		670	* reason for perl_run to return. We try to exit by jumping to the
		671	* bootstrap-time "top" top_env, as we cannot restore the "main"
		672	* coroutine as Coro has no such concept
629	*/	673	*/
630	PL_top_env = &PL_start_env;	674	PL_top_env = main_top_env;
631	/* inject call to cctx_init */	675	JMPENV_JUMP (2); /* I do not feel well about the hardcoded 2 at all */
632	prepare_cctx ((coro_cctx *)arg);
633
634	/* somebody will hit me for both perl_run and PL_restartop */
635	perl_run (PL_curinterp);
636
637	fputs ("FATAL: C coroutine fell over the edge of the world, aborting. Did you call exit in a coroutine?\n", stderr);
638	abort ();
639	}	676	}
640		677
641	static coro_cctx *	678	static coro_cctx *
642	cctx_new ()	679	cctx_new ()
643	{	680	{
644	coro_cctx *cctx;	681	coro_cctx *cctx;
		682	void *stack_start;
		683	size_t stack_size;
645		684
		685	++cctx_count;
		686
646	New (0, cctx, 1, coro_cctx);	687	Newz (0, cctx, 1, coro_cctx);
647		688
648	#if HAVE_MMAP	689	#if HAVE_MMAP
649		690
650	cctx->ssize = ((STACKSIZE * sizeof (long) + PAGESIZE - 1) / PAGESIZE + STACKGUARD) * PAGESIZE;	691	cctx->ssize = ((coro_stacksize * sizeof (long) + PAGESIZE - 1) / PAGESIZE + CORO_STACKGUARD) * PAGESIZE;
651	/* mmap suppsedly does allocate-on-write for us */	692	/* mmap supposedly does allocate-on-write for us */
652	cctx->sptr = mmap (0, cctx->ssize, PROT_EXEC\|PROT_READ\|PROT_WRITE, MAP_PRIVATE\|MAP_ANONYMOUS, 0, 0);	693	cctx->sptr = mmap (0, cctx->ssize, PROT_EXEC\|PROT_READ\|PROT_WRITE, MAP_PRIVATE\|MAP_ANONYMOUS, 0, 0);
653		694
654	if (cctx->sptr == (void *)-1)	695	if (cctx->sptr != (void *)-1)
655	{
656	perror ("FATAL: unable to mmap stack for coroutine");
657	_exit (EXIT_FAILURE);
658	}	696	{
659
660	# if STACKGUARD	697	# if CORO_STACKGUARD
661	mprotect (cctx->sptr, STACKGUARD * PAGESIZE, PROT_NONE);	698	mprotect (cctx->sptr, CORO_STACKGUARD * PAGESIZE, PROT_NONE);
662	# endif	699	# endif
		700	stack_start = CORO_STACKGUARD * PAGESIZE + (char *)cctx->sptr;
		701	stack_size = cctx->ssize - CORO_STACKGUARD * PAGESIZE;
		702	cctx->mapped = 1;
		703	}
		704	else
		705	#endif
		706	{
		707	cctx->ssize = coro_stacksize * (long)sizeof (long);
		708	New (0, cctx->sptr, coro_stacksize, long);
663		709
664	#else
665
666	cctx->ssize = STACKSIZE * (long)sizeof (long);
667	New (0, cctx->sptr, STACKSIZE, long);
668
669	if (!cctx->sptr)	710	if (!cctx->sptr)
670	{	711	{
671	perror ("FATAL: unable to malloc stack for coroutine");	712	perror ("FATAL: unable to allocate stack for coroutine");
672	_exit (EXIT_FAILURE);	713	_exit (EXIT_FAILURE);
673	}	714	}
674		715
675	#endif	716	stack_start = cctx->sptr;
		717	stack_size = cctx->ssize;
		718	}
676		719
677	#if USE_VALGRIND	720	REGISTER_STACK (cctx, (char )stack_start, (char )stack_start + stack_size);
678	cctx->valgrind_id = VALGRIND_STACK_REGISTER (
679	STACKGUARD * PAGESIZE + (char *)cctx->sptr,
680	cctx->ssize + (char *)cctx->sptr
681	);
682	#endif
683
684	coro_create (&cctx->cctx, coro_run, (void *)cctx, cctx->sptr, cctx->ssize);	721	coro_create (&cctx->cctx, coro_run, (void *)cctx, stack_start, stack_size);
685		722
686	return cctx;	723	return cctx;
687	}	724	}
688		725
689	static void	726	static void
690	cctx_free (coro_cctx *cctx)	727	cctx_destroy (coro_cctx *cctx)
691	{	728	{
692	if (!cctx)	729	if (!cctx)
693	return;	730	return;
694		731
		732	--cctx_count;
		733
695	#if USE_VALGRIND	734	#if CORO_USE_VALGRIND
696	VALGRIND_STACK_DEREGISTER (cctx->valgrind_id);	735	VALGRIND_STACK_DEREGISTER (cctx->valgrind_id);
697	#endif	736	#endif
698		737
699	#if HAVE_MMAP	738	#if HAVE_MMAP
		739	if (cctx->mapped)
700	munmap (cctx->sptr, cctx->ssize);	740	munmap (cctx->sptr, cctx->ssize);
701	#else	741	else
		742	#endif
702	Safefree (cctx->sptr);	743	Safefree (cctx->sptr);
703	#endif
704		744
705	Safefree (cctx);	745	Safefree (cctx);
706	}	746	}
707		747
708	static coro_cctx *cctx_first;
709	static int cctx_count, cctx_idle;
710
711	static coro_cctx *	748	static coro_cctx *
712	cctx_get ()	749	cctx_get (pTHX)
713	{	750	{
714	coro_cctx *cctx;
715
716	if (cctx_first)	751	while (cctx_first)
717	{	752	{
		753	coro_cctx *cctx = cctx_first;
		754	cctx_first = cctx->next;
718	--cctx_idle;	755	--cctx_idle;
719	cctx = cctx_first;	756
720	cctx_first = cctx->next;	757	if (cctx->ssize >= coro_stacksize)
		758	return cctx;
		759
		760	cctx_destroy (cctx);
721	}	761	}
722	else	762
723	{
724	++cctx_count;
725	cctx = cctx_new ();
726	PL_op = PL_op->op_next;	763	PL_op = PL_op->op_next;
727	}
728
729	return cctx;	764	return cctx_new ();
730	}	765	}
731		766
732	static void	767	static void
733	cctx_put (coro_cctx *cctx)	768	cctx_put (coro_cctx *cctx)
734	{	769	{
		770	/* free another cctx if overlimit */
		771	if (cctx_idle >= MAX_IDLE_CCTX)
		772	{
		773	coro_cctx *first = cctx_first;
		774	cctx_first = first->next;
		775	--cctx_idle;
		776
		777	assert (!first->inuse);
		778	cctx_destroy (first);
		779	}
		780
735	++cctx_idle;	781	++cctx_idle;
736	cctx->next = cctx_first;	782	cctx->next = cctx_first;
737	cctx_first = cctx;	783	cctx_first = cctx;
738	}	784	}
739		785
		786	/ coroutine switching ***************************************************/
		787
740	/* never call directly, always through the coro_state_transfer global variable */	788	/* never call directly, always through the coro_state_transfer global variable */
741	static void NOINLINE	789	static void NOINLINE
742	transfer (struct coro prev, struct coro next, int flags)	790	transfer (pTHX_ struct coro prev, struct coro next)
743	{	791	{
744	dSTACKLEVEL;	792	dSTACKLEVEL;
745		793
746	/* sometimes transfer is only called to set idle_sp */	794	/* sometimes transfer is only called to set idle_sp */
747	if (flags == TRANSFER_SET_STACKLEVEL)	795	if (!next)
		796	{
748	((coro_cctx *)prev)->idle_sp = STACKLEVEL;	797	((coro_cctx *)prev)->idle_sp = STACKLEVEL;
		798	assert (((coro_cctx )prev)->idle_te = PL_top_env); / just for the side-effect when asserts are enabled */
		799	}
749	else if (prev != next)	800	else if (prev != next)
750	{	801	{
751	coro_cctx *prev__cctx;	802	coro_cctx *prev__cctx;
752		803
		804	if (prev->flags & CF_NEW)
		805	{
		806	/* create a new empty context */
		807	Newz (0, prev->cctx, 1, coro_cctx);
		808	prev->cctx->inuse = 1;
		809	prev->flags &= ~CF_NEW;
		810	prev->flags \|= CF_RUNNING;
		811	}
		812
		813	/TODO: must not croak here /
		814	if (!prev->flags & CF_RUNNING)
		815	croak ("Coro::State::transfer called with non-running prev Coro::State, but can only transfer from running states");
		816
		817	if (next->flags & CF_RUNNING)
		818	croak ("Coro::State::transfer called with running next Coro::State, but can only transfer to inactive states");
		819
		820	if (next->flags & CF_DESTROYED)
		821	croak ("Coro::State::transfer called with destroyed next Coro::State, but can only transfer to inactive states");
		822
		823	prev->flags &= ~CF_RUNNING;
		824	next->flags \|= CF_RUNNING;
		825
753	LOCK;	826	LOCK;
754		827
755	if (next->mainstack)	828	if (next->flags & CF_NEW)
756	{	829	{
757	/* coroutine already started */	830	/* need to start coroutine */
758	SAVE (prev, flags);	831	next->flags &= ~CF_NEW;
759	LOAD (next);	832	/* first get rid of the old state */
		833	save_perl (aTHX_ prev);
		834	/* setup coroutine call */
		835	setup_coro (aTHX_ next);
		836	/* need a new stack */
		837	assert (!next->cctx);
760	}	838	}
761	else	839	else
762	{	840	{
763	/* need to start coroutine */	841	/* coroutine already started */
764	/* first get rid of the old state */	842	save_perl (aTHX_ prev);
765	SAVE (prev, -1);	843	load_perl (aTHX_ next);
766	/* setup coroutine call */
767	setup_coro (next);
768	/* need a stack */
769	next->cctx = 0;
770	}	844	}
771
772	if (!prev->cctx)
773	/* create a new empty context */
774	Newz (0, prev->cctx, 1, coro_cctx);
775		845
776	prev__cctx = prev->cctx;	846	prev__cctx = prev->cctx;
777		847
778	/* possibly "free" the cctx */	848	/* possibly "free" the cctx */
779	if (prev__cctx->idle_sp == STACKLEVEL)	849	if (prev__cctx->idle_sp == STACKLEVEL)
780	{	850	{
		851	/* I assume that STACKLEVEL is a stronger indicator than PL_top_env changes */
		852	assert (("ERROR: current top_env must equal previous top_env", PL_top_env == prev__cctx->idle_te));
		853
		854	prev->cctx = 0;
		855
781	cctx_put (prev__cctx);	856	cctx_put (prev__cctx);
782	prev->cctx = 0;	857	prev__cctx->inuse = 0;
783	}	858	}
784		859
785	if (!next->cctx)	860	if (!next->cctx)
		861	{
786	next->cctx = cctx_get ();	862	next->cctx = cctx_get (aTHX);
		863	assert (!next->cctx->inuse);
		864	next->cctx->inuse = 1;
		865	}
787		866
788	if (prev__cctx != next->cctx)	867	if (prev__cctx != next->cctx)
789	{	868	{
790	prev__cctx->top_env = PL_top_env;	869	prev__cctx->top_env = PL_top_env;
791	PL_top_env = next->cctx->top_env;	870	PL_top_env = next->cctx->top_env;
792	coro_transfer (&prev__cctx->cctx, &next->cctx->cctx);	871	coro_transfer (&prev__cctx->cctx, &next->cctx->cctx);
793	}	872	}
794		873
795	free_coro_mortal ();	874	free_coro_mortal (aTHX);
796
797	UNLOCK;	875	UNLOCK;
798	}	876	}
799	}	877	}
800		878
801	struct transfer_args	879	struct transfer_args
802	{	880	{
803	struct coro prev, next;	881	struct coro prev, next;
804	int flags;
805	};	882	};
806		883
807	#define TRANSFER(ta) transfer ((ta).prev, (ta).next, (ta).flags)	884	#define TRANSFER(ta) transfer (aTHX_ (ta).prev, (ta).next)
808		885
		886	/ high level stuff ******************************************************/
		887
809	static void	888	static int
810	coro_state_destroy (struct coro *coro)	889	coro_state_destroy (pTHX_ struct coro *coro)
811	{	890	{
812	if (coro->refcnt--)	891	if (coro->flags & CF_DESTROYED)
813	return;	892	return 0;
		893
		894	coro->flags \|= CF_DESTROYED;
		895
		896	if (coro->flags & CF_READY)
		897	{
		898	/* reduce nready, as destroying a ready coro effectively unreadies it */
		899	/* alternative: look through all ready queues and remove the coro */
		900	LOCK;
		901	--coro_nready;
		902	UNLOCK;
		903	}
		904	else
		905	coro->flags \|= CF_READY; /* make sure it is NOT put into the readyqueue */
814		906
815	if (coro->mainstack && coro->mainstack != main_mainstack)	907	if (coro->mainstack && coro->mainstack != main_mainstack)
816	{	908	{
817	struct coro temp;	909	struct coro temp;
818		910
819	SAVE ((&temp), TRANSFER_SAVE_ALL);	911	assert (!(coro->flags & CF_RUNNING));
820	LOAD (coro);
821		912
		913	Zero (&temp, 1, struct coro);
		914	temp.save = CORO_SAVE_ALL;
		915
		916	if (coro->flags & CF_RUNNING)
		917	croak ("FATAL: tried to destroy currently running coroutine");
		918
		919	save_perl (aTHX_ &temp);
		920	load_perl (aTHX_ coro);
		921
822	coro_destroy_stacks ();	922	coro_destroy_stacks (aTHX);
823		923
824	LOAD ((&temp)); /* this will get rid of defsv etc.. */	924	load_perl (aTHX_ &temp); /* this will get rid of defsv etc.. */
825		925
826	coro->mainstack = 0;	926	coro->mainstack = 0;
827	}	927	}
828		928
829	cctx_free (coro->cctx);	929	cctx_destroy (coro->cctx);
830	SvREFCNT_dec (coro->args);	930	SvREFCNT_dec (coro->args);
831	Safefree (coro);	931
		932	if (coro->next) coro->next->prev = coro->prev;
		933	if (coro->prev) coro->prev->next = coro->next;
		934	if (coro == first) first = coro->next;
		935
		936	return 1;
832	}	937	}
833		938
834	static int	939	static int
835	coro_state_clear (pTHX_ SV sv, MAGIC mg)	940	coro_state_free (pTHX_ SV sv, MAGIC mg)
836	{	941	{
837	struct coro coro = (struct coro )mg->mg_ptr;	942	struct coro coro = (struct coro )mg->mg_ptr;
838	mg->mg_ptr = 0;	943	mg->mg_ptr = 0;
839		944
		945	coro->hv = 0;
		946
		947	if (--coro->refcnt < 0)
		948	{
840	coro_state_destroy (coro);	949	coro_state_destroy (aTHX_ coro);
		950	Safefree (coro);
		951	}
841		952
842	return 0;	953	return 0;
843	}	954	}
844		955
845	static int	956	static int
…		…
852	return 0;	963	return 0;
853	}	964	}
854		965
855	static MGVTBL coro_state_vtbl = {	966	static MGVTBL coro_state_vtbl = {
856	0, 0, 0, 0,	967	0, 0, 0, 0,
857	coro_state_clear,	968	coro_state_free,
858	0,	969	0,
859	#ifdef MGf_DUP	970	#ifdef MGf_DUP
860	coro_state_dup,	971	coro_state_dup,
861	#else	972	#else
862	# define MGf_DUP 0	973	# define MGf_DUP 0
863	#endif	974	#endif
864	};	975	};
865		976
866	static struct coro *	977	static struct coro *
867	SvSTATE (SV *coro)	978	SvSTATE_ (pTHX_ SV *coro)
868	{	979	{
869	HV *stash;	980	HV *stash;
870	MAGIC *mg;	981	MAGIC *mg;
871		982
872	if (SvROK (coro))	983	if (SvROK (coro))
…		…
878	/* very slow, but rare, check */	989	/* very slow, but rare, check */
879	if (!sv_derived_from (sv_2mortal (newRV_inc (coro)), "Coro::State"))	990	if (!sv_derived_from (sv_2mortal (newRV_inc (coro)), "Coro::State"))
880	croak ("Coro::State object required");	991	croak ("Coro::State object required");
881	}	992	}
882		993
883	mg = SvMAGIC (coro);	994	mg = CORO_MAGIC (coro);
884	assert (mg->mg_type == PERL_MAGIC_ext);
885	return (struct coro *)mg->mg_ptr;	995	return (struct coro *)mg->mg_ptr;
886	}	996	}
887		997
		998	#define SvSTATE(sv) SvSTATE_ (aTHX_ (sv))
		999
888	static void	1000	static void
889	prepare_transfer (struct transfer_args ta, SV prev, SV *next, int flags)	1001	prepare_transfer (pTHX_ struct transfer_args ta, SV prev_sv, SV *next_sv)
890	{	1002	{
891	ta->prev = SvSTATE (prev);	1003	ta->prev = SvSTATE (prev_sv);
892	ta->next = SvSTATE (next);	1004	ta->next = SvSTATE (next_sv);
893	ta->flags = flags;
894	}	1005	}
895		1006
896	static void	1007	static void
897	api_transfer (SV prev, SV next, int flags)	1008	api_transfer (SV prev_sv, SV next_sv)
898	{	1009	{
899	dTHX;	1010	dTHX;
900	struct transfer_args ta;	1011	struct transfer_args ta;
901		1012
902	prepare_transfer (&ta, prev, next, flags);	1013	prepare_transfer (aTHX_ &ta, prev_sv, next_sv);
903	TRANSFER (ta);	1014	TRANSFER (ta);
904	}	1015	}
905		1016
		1017	static int
		1018	api_save (SV *coro_sv, int new_save)
		1019	{
		1020	dTHX;
		1021	struct coro *coro = SvSTATE (coro_sv);
		1022	int old_save = coro->save;
		1023
		1024	if (new_save >= 0)
		1025	coro->save = new_save;
		1026
		1027	return old_save;
		1028	}
		1029
906	/ Coro ******************************************************************/	1030	/ Coro ******************************************************************/
907		1031
908	#define PRIO_MAX 3
909	#define PRIO_HIGH 1
910	#define PRIO_NORMAL 0
911	#define PRIO_LOW -1
912	#define PRIO_IDLE -3
913	#define PRIO_MIN -4
914
915	/* for Coro.pm */
916	static GV coro_current, coro_idle;
917	static AV *coro_ready [PRIO_MAX-PRIO_MIN+1];
918	static int coro_nready;
919
920	static void	1032	static void
921	coro_enq (SV *sv)	1033	coro_enq (pTHX_ SV *coro_sv)
922	{	1034	{
923	int prio;
924
925	if (SvTYPE (sv) != SVt_PVHV)
926	croak ("Coro::ready tried to enqueue something that is not a coroutine");
927
928	prio = SvSTATE (sv)->prio;
929
930	av_push (coro_ready [prio - PRIO_MIN], sv);	1035	av_push (coro_ready [SvSTATE (coro_sv)->prio - PRIO_MIN], coro_sv);
931	coro_nready++;
932	}	1036	}
933		1037
934	static SV *	1038	static SV *
935	coro_deq (int min_prio)	1039	coro_deq (pTHX_ int min_prio)
936	{	1040	{
937	int prio = PRIO_MAX - PRIO_MIN;	1041	int prio = PRIO_MAX - PRIO_MIN;
938		1042
939	min_prio -= PRIO_MIN;	1043	min_prio -= PRIO_MIN;
940	if (min_prio < 0)	1044	if (min_prio < 0)
941	min_prio = 0;	1045	min_prio = 0;
942		1046
943	for (prio = PRIO_MAX - PRIO_MIN + 1; --prio >= min_prio; )	1047	for (prio = PRIO_MAX - PRIO_MIN + 1; --prio >= min_prio; )
944	if (AvFILLp (coro_ready [prio]) >= 0)	1048	if (AvFILLp (coro_ready [prio]) >= 0)
945	{
946	coro_nready--;
947	return av_shift (coro_ready [prio]);	1049	return av_shift (coro_ready [prio]);
948	}
949		1050
950	return 0;	1051	return 0;
951	}	1052	}
952		1053
953	static void	1054	static int
954	api_ready (SV *coro)	1055	api_ready (SV *coro_sv)
955	{	1056	{
956	dTHX;	1057	dTHX;
		1058	struct coro *coro;
957		1059
958	if (SvROK (coro))	1060	if (SvROK (coro_sv))
959	coro = SvRV (coro);	1061	coro_sv = SvRV (coro_sv);
		1062
		1063	coro = SvSTATE (coro_sv);
		1064
		1065	if (coro->flags & CF_READY)
		1066	return 0;
		1067
		1068	coro->flags \|= CF_READY;
960		1069
961	LOCK;	1070	LOCK;
962	coro_enq (SvREFCNT_inc (coro));	1071	coro_enq (aTHX_ SvREFCNT_inc (coro_sv));
		1072	++coro_nready;
963	UNLOCK;	1073	UNLOCK;
964	}
965		1074
		1075	return 1;
		1076	}
		1077
966	static void	1078	static int
		1079	api_is_ready (SV *coro_sv)
		1080	{
		1081	dTHX;
		1082	return !!(SvSTATE (coro_sv)->flags & CF_READY);
		1083	}
		1084
		1085	static void
967	prepare_schedule (struct transfer_args *ta)	1086	prepare_schedule (pTHX_ struct transfer_args *ta)
968	{	1087	{
969	SV current, prev, *next;	1088	SV prev_sv, next_sv;
970
971	current = GvSV (coro_current);
972		1089
973	for (;;)	1090	for (;;)
974	{	1091	{
975	LOCK;	1092	LOCK;
976	next = coro_deq (PRIO_MIN);	1093	next_sv = coro_deq (aTHX_ PRIO_MIN);
		1094
		1095	/* nothing to schedule: call the idle handler */
		1096	if (!next_sv)
		1097	{
		1098	dSP;
		1099	UNLOCK;
		1100
		1101	ENTER;
		1102	SAVETMPS;
		1103
		1104	PUSHMARK (SP);
		1105	PUTBACK;
		1106	call_sv (get_sv ("Coro::idle", FALSE), G_DISCARD);
		1107
		1108	FREETMPS;
		1109	LEAVE;
		1110	continue;
		1111	}
		1112
		1113	ta->next = SvSTATE (next_sv);
		1114
		1115	/* cannot transfer to destroyed coros, skip and look for next */
		1116	if (ta->next->flags & CF_DESTROYED)
		1117	{
		1118	UNLOCK;
		1119	SvREFCNT_dec (next_sv);
		1120	/* coro_nready is already taken care of by destroy */
		1121	continue;
		1122	}
		1123
		1124	--coro_nready;
977	UNLOCK;	1125	UNLOCK;
978
979	if (next)
980	break;	1126	break;
981
982	{
983	dSP;
984
985	ENTER;
986	SAVETMPS;
987
988	PUSHMARK (SP);
989	PUTBACK;
990	call_sv (GvSV (coro_idle), G_DISCARD);
991
992	FREETMPS;
993	LEAVE;
994	}	1127	}
995	}
996
997	prev = SvRV (current);
998	SvRV (current) = next;
999		1128
1000	/* free this only after the transfer */	1129	/* free this only after the transfer */
		1130	prev_sv = SvRV (coro_current);
		1131	SvRV_set (coro_current, next_sv);
		1132	ta->prev = SvSTATE (prev_sv);
		1133
		1134	assert (ta->next->flags & CF_READY);
		1135	ta->next->flags &= ~CF_READY;
		1136
1001	LOCK;	1137	LOCK;
1002	free_coro_mortal ();	1138	free_coro_mortal (aTHX);
		1139	coro_mortal = prev_sv;
1003	UNLOCK;	1140	UNLOCK;
1004	coro_mortal = prev;
1005
1006	ta->prev = SvSTATE (prev);
1007	ta->next = SvSTATE (next);
1008	ta->flags = TRANSFER_SAVE_ALL;
1009	}	1141	}
1010		1142
1011	static void	1143	static void
1012	prepare_cede (struct transfer_args *ta)	1144	prepare_cede (pTHX_ struct transfer_args *ta)
1013	{	1145	{
1014	LOCK;	1146	api_ready (coro_current);
1015	coro_enq (SvREFCNT_inc (SvRV (GvSV (coro_current))));
1016	UNLOCK;
1017
1018	prepare_schedule (ta);	1147	prepare_schedule (aTHX_ ta);
		1148	}
		1149
		1150	static int
		1151	prepare_cede_notself (pTHX_ struct transfer_args *ta)
		1152	{
		1153	if (coro_nready)
		1154	{
		1155	SV *prev = SvRV (coro_current);
		1156	prepare_schedule (aTHX_ ta);
		1157	api_ready (prev);
		1158	return 1;
		1159	}
		1160	else
		1161	return 0;
1019	}	1162	}
1020		1163
1021	static void	1164	static void
1022	api_schedule (void)	1165	api_schedule (void)
1023	{	1166	{
1024	dTHX;	1167	dTHX;
1025	struct transfer_args ta;	1168	struct transfer_args ta;
1026		1169
1027	prepare_schedule (&ta);	1170	prepare_schedule (aTHX_ &ta);
1028	TRANSFER (ta);	1171	TRANSFER (ta);
1029	}	1172	}
1030		1173
1031	static void	1174	static int
1032	api_cede (void)	1175	api_cede (void)
1033	{	1176	{
1034	dTHX;	1177	dTHX;
1035	struct transfer_args ta;	1178	struct transfer_args ta;
1036		1179
1037	prepare_cede (&ta);	1180	prepare_cede (aTHX_ &ta);
		1181
		1182	if (ta.prev != ta.next)
		1183	{
1038	TRANSFER (ta);	1184	TRANSFER (ta);
		1185	return 1;
		1186	}
		1187	else
		1188	return 0;
		1189	}
		1190
		1191	static int
		1192	api_cede_notself (void)
		1193	{
		1194	dTHX;
		1195	struct transfer_args ta;
		1196
		1197	if (prepare_cede_notself (aTHX_ &ta))
		1198	{
		1199	TRANSFER (ta);
		1200	return 1;
		1201	}
		1202	else
		1203	return 0;
1039	}	1204	}
1040		1205
1041	MODULE = Coro::State PACKAGE = Coro::State	1206	MODULE = Coro::State PACKAGE = Coro::State
1042		1207
1043	PROTOTYPES: DISABLE	1208	PROTOTYPES: DISABLE
…		…
1049	#endif	1214	#endif
1050	BOOT_PAGESIZE;	1215	BOOT_PAGESIZE;
1051		1216
1052	coro_state_stash = gv_stashpv ("Coro::State", TRUE);	1217	coro_state_stash = gv_stashpv ("Coro::State", TRUE);
1053		1218
1054	newCONSTSUB (coro_state_stash, "SAVE_DEFAV", newSViv (TRANSFER_SAVE_DEFAV));	1219	newCONSTSUB (coro_state_stash, "SAVE_DEFAV", newSViv (CORO_SAVE_DEFAV));
1055	newCONSTSUB (coro_state_stash, "SAVE_DEFSV", newSViv (TRANSFER_SAVE_DEFSV));	1220	newCONSTSUB (coro_state_stash, "SAVE_DEFSV", newSViv (CORO_SAVE_DEFSV));
1056	newCONSTSUB (coro_state_stash, "SAVE_ERRSV", newSViv (TRANSFER_SAVE_ERRSV));	1221	newCONSTSUB (coro_state_stash, "SAVE_ERRSV", newSViv (CORO_SAVE_ERRSV));
		1222	newCONSTSUB (coro_state_stash, "SAVE_IRSSV", newSViv (CORO_SAVE_IRSSV));
		1223	newCONSTSUB (coro_state_stash, "SAVE_DEFFH", newSViv (CORO_SAVE_DEFFH));
		1224	newCONSTSUB (coro_state_stash, "SAVE_DEF", newSViv (CORO_SAVE_DEF));
		1225	newCONSTSUB (coro_state_stash, "SAVE_ALL", newSViv (CORO_SAVE_ALL));
1057		1226
1058	main_mainstack = PL_mainstack;	1227	main_mainstack = PL_mainstack;
		1228	main_top_env = PL_top_env;
		1229
		1230	while (main_top_env->je_prev)
		1231	main_top_env = main_top_env->je_prev;
1059		1232
1060	coroapi.ver = CORO_API_VERSION;	1233	coroapi.ver = CORO_API_VERSION;
1061	coroapi.transfer = api_transfer;	1234	coroapi.transfer = api_transfer;
1062		1235
1063	assert (("PRIO_NORMAL must be 0", !PRIO_NORMAL));	1236	assert (("PRIO_NORMAL must be 0", !PRIO_NORMAL));
…		…
1071	HV *hv;	1244	HV *hv;
1072	int i;	1245	int i;
1073		1246
1074	Newz (0, coro, 1, struct coro);	1247	Newz (0, coro, 1, struct coro);
1075	coro->args = newAV ();	1248	coro->args = newAV ();
		1249	coro->save = CORO_SAVE_DEF;
		1250	coro->flags = CF_NEW;
1076		1251
		1252	if (first) first->prev = coro;
		1253	coro->next = first;
		1254	first = coro;
		1255
1077	hv = newHV ();	1256	coro->hv = hv = newHV ();
1078	sv_magicext ((SV )hv, 0, PERL_MAGIC_ext, &coro_state_vtbl, (char )coro, 0)->mg_flags \|= MGf_DUP;	1257	sv_magicext ((SV )hv, 0, PERL_MAGIC_ext, &coro_state_vtbl, (char )coro, 0)->mg_flags \|= MGf_DUP;
1079	RETVAL = sv_bless (newRV_noinc ((SV *)hv), gv_stashpv (klass, 1));	1258	RETVAL = sv_bless (newRV_noinc ((SV *)hv), gv_stashpv (klass, 1));
1080		1259
1081	for (i = 1; i < items; i++)	1260	for (i = 1; i < items; i++)
1082	av_push (coro->args, newSVsv (ST (i)));	1261	av_push (coro->args, newSVsv (ST (i)));
1083	}	1262	}
1084	OUTPUT:	1263	OUTPUT:
		1264	RETVAL
		1265
		1266	int
		1267	save (SV *coro, int new_save = -1)
		1268	CODE:
		1269	RETVAL = api_save (coro, new_save);
		1270	OUTPUT:
		1271	RETVAL
		1272
		1273	int
		1274	save_also (SV *coro_sv, int save_also)
		1275	CODE:
		1276	{
		1277	struct coro *coro = SvSTATE (coro_sv);
		1278	RETVAL = coro->save;
		1279	coro->save \|= save_also;
		1280	}
		1281	OUTPUT:
1085	RETVAL	1282	RETVAL
1086		1283
1087	void	1284	void
1088	_set_stacklevel (...)	1285	_set_stacklevel (...)
1089	ALIAS:	1286	ALIAS:
1090	Coro::State::transfer = 1	1287	Coro::State::transfer = 1
1091	Coro::schedule = 2	1288	Coro::schedule = 2
1092	Coro::cede = 3	1289	Coro::cede = 3
1093	Coro::Cont::yield = 4	1290	Coro::cede_notself = 4
1094	CODE:	1291	CODE:
1095	{	1292	{
1096	struct transfer_args ta;	1293	struct transfer_args ta;
1097		1294
1098	switch (ix)	1295	switch (ix)
1099	{	1296	{
1100	case 0:	1297	case 0:
1101	ta.prev = (struct coro )INT2PTR (coro_cctx , SvIV (ST (0)));	1298	ta.prev = (struct coro )INT2PTR (coro_cctx , SvIV (ST (0)));
1102	ta.next = 0;	1299	ta.next = 0;
1103	ta.flags = TRANSFER_SET_STACKLEVEL;
1104	break;	1300	break;
1105		1301
1106	case 1:	1302	case 1:
1107	if (items != 3)	1303	if (items != 2)
1108	croak ("Coro::State::transfer(prev,next,flags) expects three arguments, not %d", items);	1304	croak ("Coro::State::transfer (prev,next) expects two arguments, not %d", items);
1109		1305
1110	prepare_transfer (&ta, ST (0), ST (1), SvIV (ST (2)));	1306	prepare_transfer (aTHX_ &ta, ST (0), ST (1));
1111	break;	1307	break;
1112		1308
1113	case 2:	1309	case 2:
1114	prepare_schedule (&ta);	1310	prepare_schedule (aTHX_ &ta);
1115	break;	1311	break;
1116		1312
1117	case 3:	1313	case 3:
1118	prepare_cede (&ta);	1314	prepare_cede (aTHX_ &ta);
1119	break;	1315	break;
1120		1316
1121	case 4:	1317	case 4:
1122	{	1318	if (!prepare_cede_notself (aTHX_ &ta))
1123	SV *yieldstack;	1319	XSRETURN_EMPTY;
1124	SV *sv;
1125	AV *defav = GvAV (PL_defgv);
1126		1320
1127	yieldstack = *hv_fetch (
1128	(HV *)SvRV (GvSV (coro_current)),
1129	"yieldstack", sizeof ("yieldstack") - 1,
1130	0
1131	);
1132
1133	/* set up @_ -- ugly */
1134	av_clear (defav);
1135	av_fill (defav, items - 1);
1136	while (items--)
1137	av_store (defav, items, SvREFCNT_inc (ST(items)));
1138
1139	sv = av_pop ((AV *)SvRV (yieldstack));
1140	ta.prev = SvSTATE (av_fetch ((AV )SvRV (sv), 0, 0));
1141	ta.next = SvSTATE (av_fetch ((AV )SvRV (sv), 1, 0));
1142	ta.flags = 0;
1143	SvREFCNT_dec (sv);
1144	}
1145	break;	1321	break;
1146
1147	}	1322	}
1148		1323
		1324	BARRIER;
1149	TRANSFER (ta);	1325	TRANSFER (ta);
1150	}
1151		1326
1152	void	1327	if (GIMME_V != G_VOID && ta.next != ta.prev)
1153	_clone_state_from (SV dst, SV src)	1328	XSRETURN_YES;
		1329	}
		1330
		1331	bool
		1332	_destroy (SV *coro_sv)
1154	CODE:	1333	CODE:
1155	{	1334	RETVAL = coro_state_destroy (aTHX_ SvSTATE (coro_sv));
1156	struct coro *coro_src = SvSTATE (src);	1335	OUTPUT:
1157		1336	RETVAL
1158	sv_unmagic (SvRV (dst), PERL_MAGIC_ext);
1159
1160	++coro_src->refcnt;
1161	sv_magicext (SvRV (dst), 0, PERL_MAGIC_ext, &coro_state_vtbl, (char *)coro_src, 0)->mg_flags \|= MGf_DUP;
1162	}
1163		1337
1164	void	1338	void
1165	_exit (code)	1339	_exit (code)
1166	int code	1340	int code
1167	PROTOTYPE: $	1341	PROTOTYPE: $
1168	CODE:	1342	CODE:
1169	_exit (code);	1343	_exit (code);
1170		1344
1171	int	1345	int
		1346	cctx_stacksize (int new_stacksize = 0)
		1347	CODE:
		1348	RETVAL = coro_stacksize;
		1349	if (new_stacksize)
		1350	coro_stacksize = new_stacksize;
		1351	OUTPUT:
		1352	RETVAL
		1353
		1354	int
1172	cctx_count ()	1355	cctx_count ()
1173	CODE:	1356	CODE:
1174	RETVAL = cctx_count;	1357	RETVAL = cctx_count;
1175	OUTPUT:	1358	OUTPUT:
1176	RETVAL	1359	RETVAL
…		…
1180	CODE:	1363	CODE:
1181	RETVAL = cctx_idle;	1364	RETVAL = cctx_idle;
1182	OUTPUT:	1365	OUTPUT:
1183	RETVAL	1366	RETVAL
1184		1367
		1368	void
		1369	list ()
		1370	PPCODE:
		1371	{
		1372	struct coro *coro;
		1373	for (coro = first; coro; coro = coro->next)
		1374	if (coro->hv)
		1375	XPUSHs (sv_2mortal (newRV_inc ((SV *)coro->hv)));
		1376	}
		1377
		1378	void
		1379	_eval (Coro::State coro, SV *coderef)
		1380	CODE:
		1381	{
		1382	if (coro->mainstack)
		1383	{
		1384	struct coro temp;
		1385	Zero (&temp, 1, struct coro);
		1386	temp.save = CORO_SAVE_ALL;
		1387
		1388	if (!(coro->flags & CF_RUNNING))
		1389	{
		1390	save_perl (aTHX_ &temp);
		1391	load_perl (aTHX_ coro);
		1392	}
		1393
		1394	{
		1395	dSP;
		1396	ENTER;
		1397	SAVETMPS;
		1398	PUSHMARK (SP);
		1399	PUTBACK;
		1400	call_sv (coderef, G_KEEPERR \| G_EVAL \| G_VOID \| G_DISCARD);
		1401	SPAGAIN;
		1402	FREETMPS;
		1403	LEAVE;
		1404	PUTBACK;
		1405	}
		1406
		1407	if (!(coro->flags & CF_RUNNING))
		1408	{
		1409	save_perl (aTHX_ coro);
		1410	load_perl (aTHX_ &temp);
		1411	}
		1412	}
		1413	}
		1414
		1415	SV *
		1416	is_ready (Coro::State coro)
		1417	PROTOTYPE: $
		1418	ALIAS:
		1419	is_ready = CF_READY
		1420	is_running = CF_RUNNING
		1421	is_new = CF_NEW
		1422	is_destroyed = CF_DESTROYED
		1423	CODE:
		1424	RETVAL = boolSV (coro->flags & ix);
		1425	OUTPUT:
		1426	RETVAL
		1427
		1428	IV
		1429	rss (Coro::State coro)
		1430	PROTOTYPE: $
		1431	CODE:
		1432	RETVAL = coro_rss (coro);
		1433	OUTPUT:
		1434	RETVAL
		1435
		1436
1185	MODULE = Coro::State PACKAGE = Coro	1437	MODULE = Coro::State PACKAGE = Coro
1186		1438
1187	BOOT:	1439	BOOT:
1188	{	1440	{
1189	int i;	1441	int i;
…		…
1195	newCONSTSUB (coro_stash, "PRIO_NORMAL", newSViv (PRIO_NORMAL));	1447	newCONSTSUB (coro_stash, "PRIO_NORMAL", newSViv (PRIO_NORMAL));
1196	newCONSTSUB (coro_stash, "PRIO_LOW", newSViv (PRIO_LOW));	1448	newCONSTSUB (coro_stash, "PRIO_LOW", newSViv (PRIO_LOW));
1197	newCONSTSUB (coro_stash, "PRIO_IDLE", newSViv (PRIO_IDLE));	1449	newCONSTSUB (coro_stash, "PRIO_IDLE", newSViv (PRIO_IDLE));
1198	newCONSTSUB (coro_stash, "PRIO_MIN", newSViv (PRIO_MIN));	1450	newCONSTSUB (coro_stash, "PRIO_MIN", newSViv (PRIO_MIN));
1199		1451
1200	coro_current = gv_fetchpv ("Coro::current", TRUE, SVt_PV);	1452	coro_current = get_sv ("Coro::current", FALSE);
1201	coro_idle = gv_fetchpv ("Coro::idle" , TRUE, SVt_PV);	1453	SvREADONLY_on (coro_current);
1202		1454
1203	for (i = PRIO_MAX - PRIO_MIN + 1; i--; )	1455	for (i = PRIO_MAX - PRIO_MIN + 1; i--; )
1204	coro_ready[i] = newAV ();	1456	coro_ready[i] = newAV ();
1205		1457
1206	{	1458	{
1207	SV *sv = perl_get_sv("Coro::API", 1);	1459	SV *sv = perl_get_sv("Coro::API", 1);
1208		1460
1209	coroapi.schedule = api_schedule;	1461	coroapi.schedule = api_schedule;
		1462	coroapi.save = api_save;
1210	coroapi.cede = api_cede;	1463	coroapi.cede = api_cede;
		1464	coroapi.cede_notself = api_cede_notself;
1211	coroapi.ready = api_ready;	1465	coroapi.ready = api_ready;
		1466	coroapi.is_ready = api_is_ready;
1212	coroapi.nready = &coro_nready;	1467	coroapi.nready = &coro_nready;
1213	coroapi.current = coro_current;	1468	coroapi.current = coro_current;
1214		1469
1215	GCoroAPI = &coroapi;	1470	GCoroAPI = &coroapi;
1216	sv_setiv (sv, (IV)&coroapi);	1471	sv_setiv (sv, (IV)&coroapi);
1217	SvREADONLY_on (sv);	1472	SvREADONLY_on (sv);
1218	}	1473	}
1219	}	1474	}
		1475
		1476	void
		1477	_set_current (SV *current)
		1478	PROTOTYPE: $
		1479	CODE:
		1480	SvREFCNT_dec (SvRV (coro_current));
		1481	SvRV_set (coro_current, SvREFCNT_inc (SvRV (current)));
1220		1482
1221	int	1483	int
1222	prio (Coro::State coro, int newprio = 0)	1484	prio (Coro::State coro, int newprio = 0)
1223	ALIAS:	1485	ALIAS:
1224	nice = 1	1486	nice = 1
…		…
1227	RETVAL = coro->prio;	1489	RETVAL = coro->prio;
1228		1490
1229	if (items > 1)	1491	if (items > 1)
1230	{	1492	{
1231	if (ix)	1493	if (ix)
1232	newprio += coro->prio;	1494	newprio = coro->prio - newprio;
1233		1495
1234	if (newprio < PRIO_MIN) newprio = PRIO_MIN;	1496	if (newprio < PRIO_MIN) newprio = PRIO_MIN;
1235	if (newprio > PRIO_MAX) newprio = PRIO_MAX;	1497	if (newprio > PRIO_MAX) newprio = PRIO_MAX;
1236		1498
1237	coro->prio = newprio;	1499	coro->prio = newprio;
1238	}	1500	}
1239	}	1501	}
		1502	OUTPUT:
		1503	RETVAL
1240		1504
1241	void	1505	SV *
1242	ready (SV *self)	1506	ready (SV *self)
1243	PROTOTYPE: $	1507	PROTOTYPE: $
1244	CODE:	1508	CODE:
1245	api_ready (self);	1509	RETVAL = boolSV (api_ready (self));
		1510	OUTPUT:
		1511	RETVAL
1246		1512
1247	int	1513	int
1248	nready (...)	1514	nready (...)
1249	PROTOTYPE:	1515	PROTOTYPE:
1250	CODE:	1516	CODE:
…		…
1256		1522
1257	SV *	1523	SV *
1258	_get_state ()	1524	_get_state ()
1259	CODE:	1525	CODE:
1260	{	1526	{
1261	struct {	1527	struct io_state *data;
1262	int errorno;
1263	int laststype;
1264	int laststatval;
1265	Stat_t statcache;
1266	} data;
1267		1528
		1529	RETVAL = newSV (sizeof (struct io_state));
		1530	data = (struct io_state *)SvPVX (RETVAL);
		1531	SvCUR_set (RETVAL, sizeof (struct io_state));
		1532	SvPOK_only (RETVAL);
		1533
1268	data.errorno = errno;	1534	data->errorno = errno;
1269	data.laststype = PL_laststype;	1535	data->laststype = PL_laststype;
1270	data.laststatval = PL_laststatval;	1536	data->laststatval = PL_laststatval;
1271	data.statcache = PL_statcache;	1537	data->statcache = PL_statcache;
1272
1273	RETVAL = newSVpvn ((char *)&data, sizeof data);
1274	}	1538	}
1275	OUTPUT:	1539	OUTPUT:
1276	RETVAL	1540	RETVAL
1277		1541
1278	void	1542	void
1279	_set_state (char *data_)	1543	_set_state (char *data_)
1280	PROTOTYPE: $	1544	PROTOTYPE: $
1281	CODE:	1545	CODE:
1282	{	1546	{
1283	struct {	1547	struct io_state data = (void )data_;
1284	int errorno;
1285	int laststype;
1286	int laststatval;
1287	Stat_t statcache;
1288	} data = (void )data_;
1289		1548
1290	errno = data->errorno;	1549	errno = data->errorno;
1291	PL_laststype = data->laststype;	1550	PL_laststype = data->laststype;
1292	PL_laststatval = data->laststatval;	1551	PL_laststatval = data->laststatval;
1293	PL_statcache = data->statcache;	1552	PL_statcache = data->statcache;
1294	}	1553	}
		1554

Diff Legend

-–
+Removed lines
-+
+Added lines
-<
+Changed lines
->
+Changed lines

Comparing Coro/Coro/State.xs (file contents): Revision 1.106 by root, Mon Nov 27 02:08:55 2006 UTC vs. Revision 1.152 by root, Thu Sep 20 12:02:25 2007 UTC

Diff Legend

Comparing Coro/Coro/State.xs (file contents):
Revision 1.106 by root, Mon Nov 27 02:08:55 2006 UTC vs.
Revision 1.152 by root, Thu Sep 20 12:02:25 2007 UTC