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

Comparing Coro/Coro/State.xs (file contents):
Revision 1.107 by root, Mon Nov 27 02:15:51 2006 UTC vs.
Revision 1.158 by root, Fri Sep 21 02:23:48 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"
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
74	/* The next macro should declare a variable stacklevel that contains and approximation	38	#if CORO_USE_VALGRIND
75	* to the current C stack pointer. Its property is that it changes with each call	39	# include <valgrind/valgrind.h>
76	* and should be unique. */	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
		93	/* The next macros try to return the current stack pointer, in an as
		94	* portable way as possible. */
77	#define dSTACKLEVEL int stacklevel	95	#define dSTACKLEVEL volatile char stacklevel
78	#define STACKLEVEL ((void *)&stacklevel)	96	#define STACKLEVEL ((void *)&stacklevel)
79		97
80	#define IN_DESTRUCT (PL_main_cv == Nullcv)	98	#define IN_DESTRUCT (PL_main_cv == Nullcv)
81		99
82	#if __GNUC__ >= 3	100	#if __GNUC__ >= 3
83	# define attribute(x) __attribute__(x)	101	# define attribute(x) __attribute__(x)
		102	# define BARRIER __asm__ __volatile__ ("" : : : "memory")
84	#else	103	#else
85	# define attribute(x)	104	# define attribute(x)
		105	# define BARRIER
86	#endif	106	#endif
87		107
88	#define NOINLINE attribute ((noinline))	108	#define NOINLINE attribute ((noinline))
89		109
90	#include "CoroAPI.h"	110	#include "CoroAPI.h"
91
92	#define TRANSFER_SET_STACKLEVEL 0x8bfbfbfb /* magic cookie */
93		111
94	#ifdef USE_ITHREADS	112	#ifdef USE_ITHREADS
95	static perl_mutex coro_mutex;	113	static perl_mutex coro_mutex;
96	# define LOCK do { MUTEX_LOCK (&coro_mutex); } while (0)	114	# define LOCK do { MUTEX_LOCK (&coro_mutex); } while (0)
97	# define UNLOCK do { MUTEX_UNLOCK (&coro_mutex); } while (0)	115	# define UNLOCK do { MUTEX_UNLOCK (&coro_mutex); } while (0)
98	#else	116	#else
99	# define LOCK (void)0	117	# define LOCK (void)0
100	# define UNLOCK (void)0	118	# define UNLOCK (void)0
101	#endif	119	#endif
102		120
		121	/* helper storage struct for Coro::AIO */
		122	struct io_state
		123	{
		124	int errorno;
		125	I32 laststype;
		126	int laststatval;
		127	Stat_t statcache;
		128	};
		129
		130	static size_t coro_stacksize = CORO_STACKSIZE;
103	static struct CoroAPI coroapi;	131	static struct CoroAPI coroapi;
104	static AV main_mainstack; / used to differentiate between $main and others */	132	static AV main_mainstack; / used to differentiate between $main and others */
		133	static JMPENV *main_top_env;
105	static HV coro_state_stash, coro_stash;	134	static HV coro_state_stash, coro_stash;
106	static SV coro_mortal; / will be freed after next transfer */	135	static SV coro_mortal; / will be freed after next transfer */
107		136
108	static struct coro_cctx *cctx_first;	137	static struct coro_cctx *cctx_first;
109	static int cctx_count, cctx_idle;	138	static int cctx_count, cctx_idle;
…		…
112	typedef struct coro_cctx {	141	typedef struct coro_cctx {
113	struct coro_cctx *next;	142	struct coro_cctx *next;
114		143
115	/* the stack */	144	/* the stack */
116	void *sptr;	145	void *sptr;
117	long ssize; /* positive == mmap, otherwise malloc */	146	size_t ssize;
118		147
119	/* cpu state */	148	/* cpu state */
120	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 */
121	JMPENV *top_env;	151	JMPENV *top_env;
122	coro_context cctx;	152	coro_context cctx;
123		153
124	#if USE_VALGRIND	154	#if CORO_USE_VALGRIND
125	int valgrind_id;	155	int valgrind_id;
126	#endif	156	#endif
		157	char inuse, mapped;
127	} coro_cctx;	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	};
128		166
129	/* this is a structure representing a perl-level coroutine */	167	/* this is a structure representing a perl-level coroutine */
130	struct coro {	168	struct coro {
131	/* the c coroutine allocated to this perl coroutine, if any */	169	/* the c coroutine allocated to this perl coroutine, if any */
132	coro_cctx *cctx;	170	coro_cctx *cctx;
133		171
134	/* data associated with this coroutine (initial args) */	172	/* data associated with this coroutine (initial args) */
135	AV *args;	173	AV *args;
136	int refcnt;	174	int refcnt;
		175	int save; /* CORO_SAVE flags */
		176	int flags; /* CF_ flags */
137		177
138	/* optionally saved, might be zero */	178	/* optionally saved, might be zero */
139	AV *defav;	179	AV defav; / @_ */
140	SV *defsv;	180	SV defsv; / $_ */
141	SV *errsv;	181	SV errsv; / $@ */
		182	GV deffh; / default filehandle */
		183	SV irssv; / $/ */
		184	SV irssv_sv; / real $/ cache */
142		185
143	/* saved global state not related to stacks */	186	#define VAR(name,type) type name;
144	U8 dowarn;	187	# include "state.h"
145	I32 in_eval;	188	#undef VAR
146
147	/* the stacks and related info (callchain etc..) */
148	PERL_SI *curstackinfo;
149	AV *curstack;
150	AV *mainstack;
151	SV **stack_sp;
152	OP *op;
153	SV **curpad;
154	AV *comppad;
155	CV *compcv;
156	SV **stack_base;
157	SV **stack_max;
158	SV **tmps_stack;
159	I32 tmps_floor;
160	I32 tmps_ix;
161	I32 tmps_max;
162	I32 *markstack;
163	I32 *markstack_ptr;
164	I32 *markstack_max;
165	I32 *scopestack;
166	I32 scopestack_ix;
167	I32 scopestack_max;
168	ANY *savestack;
169	I32 savestack_ix;
170	I32 savestack_max;
171	OP **retstack;
172	I32 retstack_ix;
173	I32 retstack_max;
174	PMOP *curpm;
175	COP *curcop;
176		189
177	/* coro process data */	190	/* coro process data */
178	int prio;	191	int prio;
		192
		193	/* linked list */
		194	struct coro next, prev;
		195	HV hv; / the perl hash associated with this coro, if any */
179	};	196	};
180		197
181	typedef struct coro *Coro__State;	198	typedef struct coro *Coro__State;
182	typedef struct coro *Coro__State_or_hashref;	199	typedef struct coro *Coro__State_or_hashref;
183		200
		201	/ Coro ******************************************************************/
		202
		203	#define PRIO_MAX 3
		204	#define PRIO_HIGH 1
		205	#define PRIO_NORMAL 0
		206	#define PRIO_LOW -1
		207	#define PRIO_IDLE -3
		208	#define PRIO_MIN -4
		209
		210	/* for Coro.pm */
		211	static SV *coro_current;
		212	static AV *coro_ready [PRIO_MAX-PRIO_MIN+1];
		213	static int coro_nready;
		214	static struct coro *coro_first;
		215
		216	/ lowlevel stuff ********************************************************/
		217
184	static AV *	218	static AV *
185	coro_clone_padlist (CV *cv)	219	coro_clone_padlist (pTHX_ CV *cv)
186	{	220	{
187	AV *padlist = CvPADLIST (cv);	221	AV *padlist = CvPADLIST (cv);
188	AV newpadlist, newpad;	222	AV newpadlist, newpad;
189		223
190	newpadlist = newAV ();	224	newpadlist = newAV ();
…		…
202		236
203	return newpadlist;	237	return newpadlist;
204	}	238	}
205		239
206	static void	240	static void
207	free_padlist (AV *padlist)	241	free_padlist (pTHX_ AV *padlist)
208	{	242	{
209	/* may be during global destruction */	243	/* may be during global destruction */
210	if (SvREFCNT (padlist))	244	if (SvREFCNT (padlist))
211	{	245	{
212	I32 i = AvFILLp (padlist);	246	I32 i = AvFILLp (padlist);
…		…
233	AV *padlist;	267	AV *padlist;
234	AV av = (AV )mg->mg_obj;	268	AV av = (AV )mg->mg_obj;
235		269
236	/* casting is fun. */	270	/* casting is fun. */
237	while (&PL_sv_undef != (SV )(padlist = (AV )av_pop (av)))	271	while (&PL_sv_undef != (SV )(padlist = (AV )av_pop (av)))
238	free_padlist (padlist);	272	free_padlist (aTHX_ padlist);
239		273
240	SvREFCNT_dec (av);	274	SvREFCNT_dec (av);
241		275
242	return 0;	276	return 0;
243	}	277	}
244		278
245	#define PERL_MAGIC_coro PERL_MAGIC_ext	279	#define PERL_MAGIC_coro PERL_MAGIC_ext
246		280
247	static MGVTBL vtbl_coro = {0, 0, 0, 0, coro_cv_free};	281	static MGVTBL vtbl_coro = {0, 0, 0, 0, coro_cv_free};
248		282
		283	#define CORO_MAGIC(cv) \
		284	SvMAGIC (cv) \
		285	? SvMAGIC (cv)->mg_type == PERL_MAGIC_coro \
		286	? SvMAGIC (cv) \
		287	: mg_find ((SV *)cv, PERL_MAGIC_coro) \
		288	: 0
		289
249	/* the next two functions merely cache the padlists */	290	/* the next two functions merely cache the padlists */
250	static void	291	static void
251	get_padlist (CV *cv)	292	get_padlist (pTHX_ CV *cv)
252	{	293	{
253	MAGIC mg = mg_find ((SV )cv, PERL_MAGIC_coro);	294	MAGIC *mg = CORO_MAGIC (cv);
		295	AV *av;
254		296
255	if (mg && AvFILLp ((AV *)mg->mg_obj) >= 0)	297	if (mg && AvFILLp ((av = (AV *)mg->mg_obj)) >= 0)
256	CvPADLIST (cv) = (AV )av_pop ((AV )mg->mg_obj);	298	CvPADLIST (cv) = (AV *)AvARRAY (av)[AvFILLp (av)--];
257	else	299	else
258	{	300	{
259	#if 0	301	#if CORO_PREFER_PERL_FUNCTIONS
260	/* this is probably cleaner, but also slower? */	302	/* this is probably cleaner, but also slower? */
261	CV *cp = Perl_cv_clone (cv);	303	CV *cp = Perl_cv_clone (cv);
262	CvPADLIST (cv) = CvPADLIST (cp);	304	CvPADLIST (cv) = CvPADLIST (cp);
263	CvPADLIST (cp) = 0;	305	CvPADLIST (cp) = 0;
264	SvREFCNT_dec (cp);	306	SvREFCNT_dec (cp);
265	#else	307	#else
266	CvPADLIST (cv) = coro_clone_padlist (cv);	308	CvPADLIST (cv) = coro_clone_padlist (aTHX_ cv);
267	#endif	309	#endif
268	}	310	}
269	}	311	}
270		312
271	static void	313	static void
272	put_padlist (CV *cv)	314	put_padlist (pTHX_ CV *cv)
273	{	315	{
274	MAGIC mg = mg_find ((SV )cv, PERL_MAGIC_coro);	316	MAGIC *mg = CORO_MAGIC (cv);
		317	AV *av;
275		318
276	if (!mg)	319	if (!mg)
277	{	320	{
278	sv_magic ((SV *)cv, 0, PERL_MAGIC_coro, 0, 0);	321	sv_magic ((SV *)cv, 0, PERL_MAGIC_coro, 0, 0);
279	mg = mg_find ((SV *)cv, PERL_MAGIC_coro);	322	mg = mg_find ((SV *)cv, PERL_MAGIC_coro);
280	mg->mg_virtual = &vtbl_coro;	323	mg->mg_virtual = &vtbl_coro;
281	mg->mg_obj = (SV *)newAV ();	324	mg->mg_obj = (SV *)newAV ();
282	}	325	}
283		326
284	av_push ((AV )mg->mg_obj, (SV )CvPADLIST (cv));	327	av = (AV *)mg->mg_obj;
		328
		329	if (AvFILLp (av) >= AvMAX (av))
		330	av_extend (av, AvMAX (av) + 1);
		331
		332	AvARRAY (av)[++AvFILLp (av)] = (SV *)CvPADLIST (cv);
285	}	333	}
		334
		335	/ load & save, init *****************************************************/
286		336
287	#define SB do {	337	#define SB do {
288	#define SE } while (0)	338	#define SE } while (0)
289		339
290	#define LOAD(state) load_state((state));
291	#define SAVE(state,flags) save_state((state),(flags));
292
293	#define REPLACE_SV(sv,val) SB SvREFCNT_dec(sv); (sv) = (val); (val) = 0; SE	340	#define REPLACE_SV(sv,val) SB SvREFCNT_dec (sv); (sv) = (val); (val) = 0; SE
294		341
295	static void	342	static void
296	load_state(Coro__State c)	343	load_perl (pTHX_ Coro__State c)
297	{	344	{
298	PL_dowarn = c->dowarn;	345	#define VAR(name,type) PL_ ## name = c->name;
299	PL_in_eval = c->in_eval;	346	# include "state.h"
300		347	#undef VAR
301	PL_curstackinfo = c->curstackinfo;
302	PL_curstack = c->curstack;
303	PL_mainstack = c->mainstack;
304	PL_stack_sp = c->stack_sp;
305	PL_op = c->op;
306	PL_curpad = c->curpad;
307	PL_comppad = c->comppad;
308	PL_compcv = c->compcv;
309	PL_stack_base = c->stack_base;
310	PL_stack_max = c->stack_max;
311	PL_tmps_stack = c->tmps_stack;
312	PL_tmps_floor = c->tmps_floor;
313	PL_tmps_ix = c->tmps_ix;
314	PL_tmps_max = c->tmps_max;
315	PL_markstack = c->markstack;
316	PL_markstack_ptr = c->markstack_ptr;
317	PL_markstack_max = c->markstack_max;
318	PL_scopestack = c->scopestack;
319	PL_scopestack_ix = c->scopestack_ix;
320	PL_scopestack_max = c->scopestack_max;
321	PL_savestack = c->savestack;
322	PL_savestack_ix = c->savestack_ix;
323	PL_savestack_max = c->savestack_max;
324	#if !PERL_VERSION_ATLEAST (5,9,0)
325	PL_retstack = c->retstack;
326	PL_retstack_ix = c->retstack_ix;
327	PL_retstack_max = c->retstack_max;
328	#endif
329	PL_curpm = c->curpm;
330	PL_curcop = c->curcop;
331		348
332	if (c->defav) REPLACE_SV (GvAV (PL_defgv), c->defav);	349	if (c->defav) REPLACE_SV (GvAV (PL_defgv), c->defav);
333	if (c->defsv) REPLACE_SV (DEFSV , c->defsv);	350	if (c->defsv) REPLACE_SV (DEFSV , c->defsv);
334	if (c->errsv) REPLACE_SV (ERRSV , c->errsv);	351	if (c->errsv) REPLACE_SV (ERRSV , c->errsv);
		352	if (c->deffh) REPLACE_SV (PL_defoutgv , c->deffh);
		353
		354	if (c->irssv)
		355	{
		356	if (c->irssv == PL_rs \|\| sv_eq (PL_rs, c->irssv))
		357	{
		358	SvREFCNT_dec (c->irssv);
		359	c->irssv = 0;
		360	}
		361	else
		362	{
		363	REPLACE_SV (PL_rs, c->irssv);
		364	if (!c->irssv_sv) c->irssv_sv = get_sv ("/", 0);
		365	sv_setsv (c->irssv_sv, PL_rs);
		366	}
		367	}
335		368
336	{	369	{
337	dSP;	370	dSP;
338	CV *cv;	371	CV *cv;
339		372
340	/* now do the ugly restore mess */	373	/* now do the ugly restore mess */
341	while ((cv = (CV *)POPs))	374	while ((cv = (CV *)POPs))
342	{	375	{
343	AV padlist = (AV )POPs;
344
345	if (padlist)
346	{
347	put_padlist (cv); /* mark this padlist as available */	376	put_padlist (aTHX_ cv); /* mark this padlist as available */
348	CvPADLIST(cv) = padlist;	377	CvDEPTH (cv) = PTR2IV (POPs);
349	}	378	CvPADLIST (cv) = (AV *)POPs;
350
351	++CvDEPTH(cv);
352	}	379	}
353		380
354	PUTBACK;	381	PUTBACK;
355	}	382	}
356	}	383	}
357		384
358	static void	385	static void
359	save_state(Coro__State c, int flags)	386	save_perl (pTHX_ Coro__State c)
360	{	387	{
361	{	388	{
362	dSP;	389	dSP;
363	I32 cxix = cxstack_ix;	390	I32 cxix = cxstack_ix;
364	PERL_CONTEXT *ccstk = cxstack;	391	PERL_CONTEXT *ccstk = cxstack;
…		…
367	/*	394	/*
368	* the worst thing you can imagine happens first - we have to save	395	* the worst thing you can imagine happens first - we have to save
369	* (and reinitialize) all cv's in the whole callchain :(	396	* (and reinitialize) all cv's in the whole callchain :(
370	*/	397	*/
371		398
372	PUSHs (Nullsv);	399	XPUSHs (Nullsv);
373	/* this loop was inspired by pp_caller */	400	/* this loop was inspired by pp_caller */
374	for (;;)	401	for (;;)
375	{	402	{
376	while (cxix >= 0)	403	while (cxix >= 0)
377	{	404	{
378	PERL_CONTEXT *cx = &ccstk[cxix--];	405	PERL_CONTEXT *cx = &ccstk[cxix--];
379		406
380	if (CxTYPE(cx) == CXt_SUB)	407	if (CxTYPE (cx) == CXt_SUB \|\| CxTYPE (cx) == CXt_FORMAT)
381	{	408	{
382	CV *cv = cx->blk_sub.cv;	409	CV *cv = cx->blk_sub.cv;
		410
383	if (CvDEPTH(cv))	411	if (CvDEPTH (cv))
384	{	412	{
385	EXTEND (SP, CvDEPTH(cv)*2);	413	EXTEND (SP, 3);
386
387	while (--CvDEPTH(cv))
388	{
389	/* this tells the restore code to increment CvDEPTH */
390	PUSHs (Nullsv);
391	PUSHs ((SV *)cv);
392	}
393
394	PUSHs ((SV *)CvPADLIST(cv));	414	PUSHs ((SV *)CvPADLIST (cv));
		415	PUSHs (INT2PTR (SV *, CvDEPTH (cv)));
395	PUSHs ((SV *)cv);	416	PUSHs ((SV *)cv);
396		417
		418	CvDEPTH (cv) = 0;
397	get_padlist (cv);	419	get_padlist (aTHX_ cv);
398	}	420	}
399	}	421	}
400	#ifdef CXt_FORMAT
401	else if (CxTYPE(cx) == CXt_FORMAT)
402	{
403	/* I never used formats, so how should I know how these are implemented? */
404	/* my bold guess is as a simple, plain sub... */
405	croak ("CXt_FORMAT not yet handled. Don't switch coroutines from within formats");
406	}
407	#endif
408	}	422	}
409		423
410	if (top_si->si_type == PERLSI_MAIN)	424	if (top_si->si_type == PERLSI_MAIN)
411	break;	425	break;
412		426
413	top_si = top_si->si_prev;	427	top_si = top_si->si_prev;
414	ccstk = top_si->si_cxstack;	428	ccstk = top_si->si_cxstack;
415	cxix = top_si->si_cxix;	429	cxix = top_si->si_cxix;
416	}	430	}
417		431
418	PUTBACK;	432	PUTBACK;
419	}	433	}
420		434
421	c->defav = flags & TRANSFER_SAVE_DEFAV ? (AV *)SvREFCNT_inc (GvAV (PL_defgv)) : 0;	435	c->defav = c->save & CORO_SAVE_DEFAV ? (AV *)SvREFCNT_inc (GvAV (PL_defgv)) : 0;
422	c->defsv = flags & TRANSFER_SAVE_DEFSV ? SvREFCNT_inc (DEFSV) : 0;	436	c->defsv = c->save & CORO_SAVE_DEFSV ? SvREFCNT_inc (DEFSV) : 0;
423	c->errsv = flags & TRANSFER_SAVE_ERRSV ? SvREFCNT_inc (ERRSV) : 0;	437	c->errsv = c->save & CORO_SAVE_ERRSV ? SvREFCNT_inc (ERRSV) : 0;
		438	c->deffh = c->save & CORO_SAVE_DEFFH ? (GV *)SvREFCNT_inc (PL_defoutgv) : 0;
		439	c->irssv = c->save & CORO_SAVE_IRSSV ? SvREFCNT_inc (PL_rs) : 0;
424		440
425	c->dowarn = PL_dowarn;	441	#define VAR(name,type)c->name = PL_ ## name;
426	c->in_eval = PL_in_eval;	442	# include "state.h"
427		443	#undef VAR
428	c->curstackinfo = PL_curstackinfo;
429	c->curstack = PL_curstack;
430	c->mainstack = PL_mainstack;
431	c->stack_sp = PL_stack_sp;
432	c->op = PL_op;
433	c->curpad = PL_curpad;
434	c->comppad = PL_comppad;
435	c->compcv = PL_compcv;
436	c->stack_base = PL_stack_base;
437	c->stack_max = PL_stack_max;
438	c->tmps_stack = PL_tmps_stack;
439	c->tmps_floor = PL_tmps_floor;
440	c->tmps_ix = PL_tmps_ix;
441	c->tmps_max = PL_tmps_max;
442	c->markstack = PL_markstack;
443	c->markstack_ptr = PL_markstack_ptr;
444	c->markstack_max = PL_markstack_max;
445	c->scopestack = PL_scopestack;
446	c->scopestack_ix = PL_scopestack_ix;
447	c->scopestack_max = PL_scopestack_max;
448	c->savestack = PL_savestack;
449	c->savestack_ix = PL_savestack_ix;
450	c->savestack_max = PL_savestack_max;
451	#if !PERL_VERSION_ATLEAST (5,9,0)
452	c->retstack = PL_retstack;
453	c->retstack_ix = PL_retstack_ix;
454	c->retstack_max = PL_retstack_max;
455	#endif
456	c->curpm = PL_curpm;
457	c->curcop = PL_curcop;
458	}	444	}
459		445
460	/*	446	/*
461	* allocate various perl stacks. This is an exact copy	447	* allocate various perl stacks. This is an exact copy
462	* of perl.c:init_stacks, except that it uses less memory	448	* of perl.c:init_stacks, except that it uses less memory
463	* on the (sometimes correct) assumption that coroutines do	449	* on the (sometimes correct) assumption that coroutines do
464	* not usually need a lot of stackspace.	450	* not usually need a lot of stackspace.
465	*/	451	*/
		452	#if CORO_PREFER_PERL_FUNCTIONS
		453	# define coro_init_stacks init_stacks
		454	#else
466	static void	455	static void
467	coro_init_stacks ()	456	coro_init_stacks (pTHX)
468	{	457	{
469	PL_curstackinfo = new_stackinfo(96, 1024/sizeof(PERL_CONTEXT) - 1);	458	PL_curstackinfo = new_stackinfo(64, 6);
470	PL_curstackinfo->si_type = PERLSI_MAIN;	459	PL_curstackinfo->si_type = PERLSI_MAIN;
471	PL_curstack = PL_curstackinfo->si_stack;	460	PL_curstack = PL_curstackinfo->si_stack;
472	PL_mainstack = PL_curstack; /* remember in case we switch stacks */	461	PL_mainstack = PL_curstack; /* remember in case we switch stacks */
473		462
474	PL_stack_base = AvARRAY(PL_curstack);	463	PL_stack_base = AvARRAY(PL_curstack);
475	PL_stack_sp = PL_stack_base;	464	PL_stack_sp = PL_stack_base;
476	PL_stack_max = PL_stack_base + AvMAX(PL_curstack);	465	PL_stack_max = PL_stack_base + AvMAX(PL_curstack);
477		466
478	New(50,PL_tmps_stack,96,SV*);	467	New(50,PL_tmps_stack,64,SV*);
479	PL_tmps_floor = -1;	468	PL_tmps_floor = -1;
480	PL_tmps_ix = -1;	469	PL_tmps_ix = -1;
481	PL_tmps_max = 96;	470	PL_tmps_max = 64;
482		471
483	New(54,PL_markstack,16,I32);	472	New(54,PL_markstack,16,I32);
484	PL_markstack_ptr = PL_markstack;	473	PL_markstack_ptr = PL_markstack;
485	PL_markstack_max = PL_markstack + 16;	474	PL_markstack_max = PL_markstack + 16;
486		475
…		…
490		479
491	New(54,PL_scopestack,16,I32);	480	New(54,PL_scopestack,16,I32);
492	PL_scopestack_ix = 0;	481	PL_scopestack_ix = 0;
493	PL_scopestack_max = 16;	482	PL_scopestack_max = 16;
494		483
495	New(54,PL_savestack,96,ANY);	484	New(54,PL_savestack,64,ANY);
496	PL_savestack_ix = 0;	485	PL_savestack_ix = 0;
497	PL_savestack_max = 96;	486	PL_savestack_max = 64;
498		487
499	#if !PERL_VERSION_ATLEAST (5,9,0)	488	#if !PERL_VERSION_ATLEAST (5,9,0)
500	New(54,PL_retstack,8,OP*);	489	New(54,PL_retstack,4,OP*);
501	PL_retstack_ix = 0;	490	PL_retstack_ix = 0;
502	PL_retstack_max = 8;	491	PL_retstack_max = 4;
503	#endif	492	#endif
504	}	493	}
		494	#endif
505		495
506	/*	496	/*
507	* destroy the stacks, the callchain etc...	497	* destroy the stacks, the callchain etc...
508	*/	498	*/
509	static void	499	static void
510	coro_destroy_stacks ()	500	coro_destroy_stacks (pTHX)
511	{	501	{
512	if (!IN_DESTRUCT)	502	if (!IN_DESTRUCT)
513	{	503	{
514	/* is this ugly, I ask? */	504	/* restore all saved variables and stuff */
515	LEAVE_SCOPE (0);	505	LEAVE_SCOPE (0);
		506	assert (PL_tmps_floor == -1);
516		507
517	/* sure it is, but more important: is it correct?? :/ */	508	/* free all temporaries */
518	FREETMPS;	509	FREETMPS;
		510	assert (PL_tmps_ix == -1);
519		511
		512	/* unwind all extra stacks */
520	/POPSTACK_TO (PL_mainstack);//D//use/	513	POPSTACK_TO (PL_mainstack);
		514
		515	/* unwind main stack */
		516	dounwind (-1);
521	}	517	}
522		518
523	while (PL_curstackinfo->si_next)	519	while (PL_curstackinfo->si_next)
524	PL_curstackinfo = PL_curstackinfo->si_next;	520	PL_curstackinfo = PL_curstackinfo->si_next;
525		521
526	while (PL_curstackinfo)	522	while (PL_curstackinfo)
527	{	523	{
528	PERL_SI *p = PL_curstackinfo->si_prev;	524	PERL_SI *p = PL_curstackinfo->si_prev;
529		525
530	{ /D//remove/
531	dSP;
532	SWITCHSTACK (PL_curstack, PL_curstackinfo->si_stack);
533	PUTBACK; /* possibly superfluous */
534	}
535
536	if (!IN_DESTRUCT)	526	if (!IN_DESTRUCT)
537	{
538	dounwind (-1);/D//remove/
539	SvREFCNT_dec (PL_curstackinfo->si_stack);	527	SvREFCNT_dec (PL_curstackinfo->si_stack);
540	}
541		528
542	Safefree (PL_curstackinfo->si_cxstack);	529	Safefree (PL_curstackinfo->si_cxstack);
543	Safefree (PL_curstackinfo);	530	Safefree (PL_curstackinfo);
544	PL_curstackinfo = p;	531	PL_curstackinfo = p;
545	}	532	}
…		…
551	#if !PERL_VERSION_ATLEAST (5,9,0)	538	#if !PERL_VERSION_ATLEAST (5,9,0)
552	Safefree (PL_retstack);	539	Safefree (PL_retstack);
553	#endif	540	#endif
554	}	541	}
555		542
		543	static size_t
		544	coro_rss (struct coro *coro)
		545	{
		546	size_t rss = sizeof (coro);
		547
		548	if (coro->mainstack)
		549	{
		550	if (coro->flags & CF_RUNNING)
		551	{
		552	#define VAR(name,type)coro->name = PL_ ## name;
		553	# include "state.h"
		554	#undef VAR
		555	}
		556
		557	rss += sizeof (coro->curstackinfo);
		558	rss += sizeof (struct xpvav) + (1 + AvFILL (coro->curstackinfo->si_stack)) * sizeof (SV *);
		559	rss += (coro->curstackinfo->si_cxmax + 1) * sizeof (PERL_CONTEXT);
		560	rss += sizeof (struct xpvav) + (1 + AvFILL (coro->curstack)) * sizeof (SV *);
		561	rss += coro->tmps_max * sizeof (SV *);
		562	rss += (coro->markstack_max - coro->markstack_ptr) * sizeof (I32);
		563	rss += coro->scopestack_max * sizeof (I32);
		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
556	static void	576	static void
557	setup_coro (struct coro *coro)	577	setup_coro (pTHX_ struct coro *coro)
558	{	578	{
559	/*	579	/*
560	* emulate part of the perl startup here.	580	* emulate part of the perl startup here.
561	*/	581	*/
562
563	coro_init_stacks ();	582	coro_init_stacks (aTHX);
564		583
		584	PL_curcop = &PL_compiling;
		585	PL_in_eval = EVAL_NULL;
565	PL_curcop = 0;	586	PL_comppad = 0;
566	PL_in_eval = 0;
567	PL_curpm = 0;	587	PL_curpm = 0;
		588	PL_localizing = 0;
		589	PL_dirty = 0;
		590	PL_restartop = 0;
568		591
569	{	592	{
570	dSP;	593	dSP;
571	LOGOP myop;	594	LOGOP myop;
572		595
573	/* I have no idea why this is needed, but it is */
574	PUSHMARK (SP);
575
576	SvREFCNT_dec (GvAV (PL_defgv));	596	SvREFCNT_dec (GvAV (PL_defgv));
577	GvAV (PL_defgv) = coro->args; coro->args = 0;	597	GvAV (PL_defgv) = coro->args; coro->args = 0;
578		598
579	Zero (&myop, 1, LOGOP);	599	Zero (&myop, 1, LOGOP);
580	myop.op_next = Nullop;	600	myop.op_next = Nullop;
581	myop.op_flags = OPf_WANT_VOID;	601	myop.op_flags = OPf_WANT_VOID;
582		602
		603	PUSHMARK (SP);
		604	XPUSHs (av_shift (GvAV (PL_defgv)));
		605	PUTBACK;
583	PL_op = (OP *)&myop;	606	PL_op = (OP *)&myop;
584
585	PUSHMARK (SP);
586	XPUSHs ((SV *)get_cv ("Coro::State::_coro_init", FALSE));
587	PUTBACK;
588	PL_op = PL_ppaddr[OP_ENTERSUB](aTHX);	607	PL_op = PL_ppaddr[OP_ENTERSUB](aTHX);
589	SPAGAIN;	608	SPAGAIN;
590
591	ENTER; /* necessary e.g. for dounwind */
592	}	609	}
593	}
594		610
		611	ENTER; /* necessary e.g. for dounwind */
		612	}
		613
595	static void	614	static void
596	free_coro_mortal ()	615	free_coro_mortal (pTHX)
597	{	616	{
598	if (coro_mortal)	617	if (coro_mortal)
599	{	618	{
600	SvREFCNT_dec (coro_mortal);	619	SvREFCNT_dec (coro_mortal);
601	coro_mortal = 0;	620	coro_mortal = 0;
602	}	621	}
603	}	622	}
604		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 */
605	static void NOINLINE	627	static void NOINLINE
606	prepare_cctx (coro_cctx *cctx)	628	prepare_cctx (pTHX_ coro_cctx *cctx)
607	{	629	{
608	dSP;	630	dSP;
609	LOGOP myop;	631	LOGOP myop;
610		632
611	Zero (&myop, 1, LOGOP);	633	Zero (&myop, 1, LOGOP);
612	myop.op_next = PL_op;	634	myop.op_next = PL_op;
613	myop.op_flags = OPf_WANT_VOID;	635	myop.op_flags = OPf_WANT_VOID \| OPf_STACKED;
614
615	sv_setiv (get_sv ("Coro::State::_cctx", FALSE), PTR2IV (cctx));
616		636
617	PUSHMARK (SP);	637	PUSHMARK (SP);
		638	EXTEND (SP, 2);
		639	PUSHs (sv_2mortal (newSViv (PTR2IV (cctx))));
618	XPUSHs ((SV *)get_cv ("Coro::State::_cctx_init", FALSE));	640	PUSHs ((SV *)get_cv ("Coro::State::_cctx_init", FALSE));
619	PUTBACK;	641	PUTBACK;
		642	PL_op = (OP *)&myop;
620	PL_restartop = PL_ppaddr[OP_ENTERSUB](aTHX);	643	PL_op = PL_ppaddr[OP_ENTERSUB](aTHX);
621	SPAGAIN;	644	SPAGAIN;
622	}	645	}
623		646
		647	/*
		648	* this is a _very_ stripped down perl interpreter ;)
		649	*/
624	static void	650	static void
625	coro_run (void *arg)	651	coro_run (void *arg)
626	{	652	{
		653	dTHX;
		654
627	/* coro_run is the alternative epilogue of transfer() */	655	/* coro_run is the alternative tail of transfer(), so unlock here. */
628	UNLOCK;	656	UNLOCK;
629		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
630	/*	667	/*
631	* 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
632	*/	673	*/
633	PL_top_env = &PL_start_env;	674	PL_top_env = main_top_env;
634		675	JMPENV_JUMP (2); /* I do not feel well about the hardcoded 2 at all */
635	/* inject call to cctx_init */
636	prepare_cctx ((coro_cctx *)arg);
637
638	/* somebody will hit me for both perl_run and PL_restartop */
639	perl_run (PL_curinterp);
640
641	fputs ("FATAL: C coroutine fell over the edge of the world, aborting. Did you call exit in a coroutine?\n", stderr);
642	abort ();
643	}	676	}
644		677
645	static coro_cctx *	678	static coro_cctx *
646	cctx_new ()	679	cctx_new ()
647	{	680	{
648	coro_cctx *cctx;	681	coro_cctx *cctx;
		682	void *stack_start;
		683	size_t stack_size;
649		684
650	++cctx_count;	685	++cctx_count;
651		686
652	New (0, cctx, 1, coro_cctx);	687	Newz (0, cctx, 1, coro_cctx);
653		688
654	#if HAVE_MMAP	689	#if HAVE_MMAP
655		690
656	cctx->ssize = ((STACKSIZE * sizeof (long) + PAGESIZE - 1) / PAGESIZE + STACKGUARD) * PAGESIZE;	691	cctx->ssize = ((coro_stacksize * sizeof (long) + PAGESIZE - 1) / PAGESIZE + CORO_STACKGUARD) * PAGESIZE;
657	/* mmap suppsedly does allocate-on-write for us */	692	/* mmap supposedly does allocate-on-write for us */
658	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);
659		694
660	if (cctx->sptr == (void *)-1)	695	if (cctx->sptr != (void *)-1)
661	{
662	perror ("FATAL: unable to mmap stack for coroutine");
663	_exit (EXIT_FAILURE);
664	}	696	{
665
666	# if STACKGUARD	697	# if CORO_STACKGUARD
667	mprotect (cctx->sptr, STACKGUARD * PAGESIZE, PROT_NONE);	698	mprotect (cctx->sptr, CORO_STACKGUARD * PAGESIZE, PROT_NONE);
668	# 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);
669		709
670	#else
671
672	cctx->ssize = STACKSIZE * (long)sizeof (long);
673	New (0, cctx->sptr, STACKSIZE, long);
674
675	if (!cctx->sptr)	710	if (!cctx->sptr)
676	{	711	{
677	perror ("FATAL: unable to malloc stack for coroutine");	712	perror ("FATAL: unable to allocate stack for coroutine");
678	_exit (EXIT_FAILURE);	713	_exit (EXIT_FAILURE);
679	}	714	}
680		715
681	#endif	716	stack_start = cctx->sptr;
		717	stack_size = cctx->ssize;
		718	}
682		719
683	#if USE_VALGRIND	720	REGISTER_STACK (cctx, (char )stack_start, (char )stack_start + stack_size);
684	cctx->valgrind_id = VALGRIND_STACK_REGISTER (
685	STACKGUARD * PAGESIZE + (char *)cctx->sptr,
686	cctx->ssize + (char *)cctx->sptr
687	);
688	#endif
689
690	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);
691		722
692	return cctx;	723	return cctx;
693	}	724	}
694		725
695	static void	726	static void
696	cctx_free (coro_cctx *cctx)	727	cctx_destroy (coro_cctx *cctx)
697	{	728	{
698	if (!cctx)	729	if (!cctx)
699	return;	730	return;
700		731
701	--cctx_count;	732	--cctx_count;
702		733
703	#if USE_VALGRIND	734	#if CORO_USE_VALGRIND
704	VALGRIND_STACK_DEREGISTER (cctx->valgrind_id);	735	VALGRIND_STACK_DEREGISTER (cctx->valgrind_id);
705	#endif	736	#endif
706		737
707	#if HAVE_MMAP	738	#if HAVE_MMAP
		739	if (cctx->mapped)
708	munmap (cctx->sptr, cctx->ssize);	740	munmap (cctx->sptr, cctx->ssize);
709	#else	741	else
		742	#endif
710	Safefree (cctx->sptr);	743	Safefree (cctx->sptr);
711	#endif
712		744
713	Safefree (cctx);	745	Safefree (cctx);
714	}	746	}
715		747
716	static coro_cctx *	748	static coro_cctx *
717	cctx_get ()	749	cctx_get (pTHX)
718	{	750	{
719	coro_cctx *cctx;
720
721	if (cctx_first)	751	while (cctx_first)
722	{	752	{
		753	coro_cctx *cctx = cctx_first;
		754	cctx_first = cctx->next;
723	--cctx_idle;	755	--cctx_idle;
724	cctx = cctx_first;	756
725	cctx_first = cctx->next;	757	if (cctx->ssize >= coro_stacksize)
		758	return cctx;
		759
		760	cctx_destroy (cctx);
726	}	761	}
727	else	762
728	{
729	cctx = cctx_new ();
730	PL_op = PL_op->op_next;	763	PL_op = PL_op->op_next;
731	}
732
733	return cctx;	764	return cctx_new ();
734	}	765	}
735		766
736	static void	767	static void
737	cctx_put (coro_cctx *cctx)	768	cctx_put (coro_cctx *cctx)
738	{	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
739	++cctx_idle;	781	++cctx_idle;
740	cctx->next = cctx_first;	782	cctx->next = cctx_first;
741	cctx_first = cctx;	783	cctx_first = cctx;
742	}	784	}
743		785
		786	/ coroutine switching ***************************************************/
		787
744	/* never call directly, always through the coro_state_transfer global variable */	788	/* never call directly, always through the coro_state_transfer global variable */
745	static void NOINLINE	789	static void NOINLINE
746	transfer (struct coro prev, struct coro next, int flags)	790	transfer (pTHX_ struct coro prev, struct coro next)
747	{	791	{
748	dSTACKLEVEL;	792	dSTACKLEVEL;
749		793
750	/* sometimes transfer is only called to set idle_sp */	794	/* sometimes transfer is only called to set idle_sp */
751	if (flags == TRANSFER_SET_STACKLEVEL)	795	if (!next)
		796	{
752	((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	}
753	else if (prev != next)	800	else if (prev != next)
754	{	801	{
755	coro_cctx *prev__cctx;	802	coro_cctx *prev__cctx;
756		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
757	LOCK;	826	LOCK;
758		827
759	if (next->mainstack)	828	if (next->flags & CF_NEW)
760	{	829	{
761	/* coroutine already started */	830	/* need to start coroutine */
762	SAVE (prev, flags);	831	next->flags &= ~CF_NEW;
763	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);
764	}	838	}
765	else	839	else
766	{	840	{
767	/* need to start coroutine */	841	/* coroutine already started */
768	/* first get rid of the old state */	842	save_perl (aTHX_ prev);
769	SAVE (prev, -1);	843	load_perl (aTHX_ next);
770	/* setup coroutine call */
771	setup_coro (next);
772	/* need a stack */
773	next->cctx = 0;
774	}	844	}
775
776	if (!prev->cctx)
777	/* create a new empty context */
778	Newz (0, prev->cctx, 1, coro_cctx);
779		845
780	prev__cctx = prev->cctx;	846	prev__cctx = prev->cctx;
781		847
782	/* possibly "free" the cctx */	848	/* possibly "free" the cctx */
783	if (prev__cctx->idle_sp == STACKLEVEL)	849	if (prev__cctx->idle_sp == STACKLEVEL)
784	{	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
785	cctx_put (prev__cctx);	856	cctx_put (prev__cctx);
786	prev->cctx = 0;	857	prev__cctx->inuse = 0;
787	}	858	}
788		859
789	if (!next->cctx)	860	if (!next->cctx)
		861	{
790	next->cctx = cctx_get ();	862	next->cctx = cctx_get (aTHX);
		863	assert (!next->cctx->inuse);
		864	next->cctx->inuse = 1;
		865	}
791		866
792	if (prev__cctx != next->cctx)	867	if (prev__cctx != next->cctx)
793	{	868	{
794	prev__cctx->top_env = PL_top_env;	869	prev__cctx->top_env = PL_top_env;
795	PL_top_env = next->cctx->top_env;	870	PL_top_env = next->cctx->top_env;
796	coro_transfer (&prev__cctx->cctx, &next->cctx->cctx);	871	coro_transfer (&prev__cctx->cctx, &next->cctx->cctx);
797	}	872	}
798		873
799	free_coro_mortal ();	874	free_coro_mortal (aTHX);
800
801	UNLOCK;	875	UNLOCK;
802	}	876	}
803	}	877	}
804		878
805	struct transfer_args	879	struct transfer_args
806	{	880	{
807	struct coro prev, next;	881	struct coro prev, next;
808	int flags;
809	};	882	};
810		883
811	#define TRANSFER(ta) transfer ((ta).prev, (ta).next, (ta).flags)	884	#define TRANSFER(ta) transfer (aTHX_ (ta).prev, (ta).next)
812		885
		886	/ high level stuff ******************************************************/
		887
813	static void	888	static int
814	coro_state_destroy (struct coro *coro)	889	coro_state_destroy (pTHX_ struct coro *coro)
815	{	890	{
816	if (coro->refcnt--)	891	if (coro->flags & CF_DESTROYED)
817	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 */
818		906
819	if (coro->mainstack && coro->mainstack != main_mainstack)	907	if (coro->mainstack && coro->mainstack != main_mainstack)
820	{	908	{
821	struct coro temp;	909	struct coro temp;
822		910
823	SAVE ((&temp), TRANSFER_SAVE_ALL);	911	assert (!(coro->flags & CF_RUNNING));
824	LOAD (coro);
825		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
826	coro_destroy_stacks ();	922	coro_destroy_stacks (aTHX);
827		923
828	LOAD ((&temp)); /* this will get rid of defsv etc.. */	924	load_perl (aTHX_ &temp); /* this will get rid of defsv etc.. */
829		925
830	coro->mainstack = 0;	926	coro->mainstack = 0;
831	}	927	}
832		928
833	cctx_free (coro->cctx);	929	cctx_destroy (coro->cctx);
834	SvREFCNT_dec (coro->args);	930	SvREFCNT_dec (coro->args);
835	Safefree (coro);	931
		932	if (coro->next) coro->next->prev = coro->prev;
		933	if (coro->prev) coro->prev->next = coro->next;
		934	if (coro == coro_first) coro_first = coro->next;
		935
		936	return 1;
836	}	937	}
837		938
838	static int	939	static int
839	coro_state_clear (pTHX_ SV sv, MAGIC mg)	940	coro_state_free (pTHX_ SV sv, MAGIC mg)
840	{	941	{
841	struct coro coro = (struct coro )mg->mg_ptr;	942	struct coro coro = (struct coro )mg->mg_ptr;
842	mg->mg_ptr = 0;	943	mg->mg_ptr = 0;
843		944
		945	coro->hv = 0;
		946
		947	if (--coro->refcnt < 0)
		948	{
844	coro_state_destroy (coro);	949	coro_state_destroy (aTHX_ coro);
		950	Safefree (coro);
		951	}
845		952
846	return 0;	953	return 0;
847	}	954	}
848		955
849	static int	956	static int
…		…
856	return 0;	963	return 0;
857	}	964	}
858		965
859	static MGVTBL coro_state_vtbl = {	966	static MGVTBL coro_state_vtbl = {
860	0, 0, 0, 0,	967	0, 0, 0, 0,
861	coro_state_clear,	968	coro_state_free,
862	0,	969	0,
863	#ifdef MGf_DUP	970	#ifdef MGf_DUP
864	coro_state_dup,	971	coro_state_dup,
865	#else	972	#else
866	# define MGf_DUP 0	973	# define MGf_DUP 0
867	#endif	974	#endif
868	};	975	};
869		976
870	static struct coro *	977	static struct coro *
871	SvSTATE (SV *coro)	978	SvSTATE_ (pTHX_ SV *coro)
872	{	979	{
873	HV *stash;	980	HV *stash;
874	MAGIC *mg;	981	MAGIC *mg;
875		982
876	if (SvROK (coro))	983	if (SvROK (coro))
…		…
882	/* very slow, but rare, check */	989	/* very slow, but rare, check */
883	if (!sv_derived_from (sv_2mortal (newRV_inc (coro)), "Coro::State"))	990	if (!sv_derived_from (sv_2mortal (newRV_inc (coro)), "Coro::State"))
884	croak ("Coro::State object required");	991	croak ("Coro::State object required");
885	}	992	}
886		993
887	mg = SvMAGIC (coro);	994	mg = CORO_MAGIC (coro);
888	assert (mg->mg_type == PERL_MAGIC_ext);
889	return (struct coro *)mg->mg_ptr;	995	return (struct coro *)mg->mg_ptr;
890	}	996	}
891		997
		998	#define SvSTATE(sv) SvSTATE_ (aTHX_ (sv))
		999
892	static void	1000	static void
893	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)
894	{	1002	{
895	ta->prev = SvSTATE (prev);	1003	ta->prev = SvSTATE (prev_sv);
896	ta->next = SvSTATE (next);	1004	ta->next = SvSTATE (next_sv);
897	ta->flags = flags;
898	}	1005	}
899		1006
900	static void	1007	static void
901	api_transfer (SV prev, SV next, int flags)	1008	api_transfer (SV prev_sv, SV next_sv)
902	{	1009	{
903	dTHX;	1010	dTHX;
904	struct transfer_args ta;	1011	struct transfer_args ta;
905		1012
906	prepare_transfer (&ta, prev, next, flags);	1013	prepare_transfer (aTHX_ &ta, prev_sv, next_sv);
907	TRANSFER (ta);	1014	TRANSFER (ta);
908	}	1015	}
909		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
910	/ Coro ******************************************************************/	1030	/ Coro ******************************************************************/
911		1031
912	#define PRIO_MAX 3
913	#define PRIO_HIGH 1
914	#define PRIO_NORMAL 0
915	#define PRIO_LOW -1
916	#define PRIO_IDLE -3
917	#define PRIO_MIN -4
918
919	/* for Coro.pm */
920	static GV coro_current, coro_idle;
921	static AV *coro_ready [PRIO_MAX-PRIO_MIN+1];
922	static int coro_nready;
923
924	static void	1032	static void
925	coro_enq (SV *sv)	1033	coro_enq (pTHX_ SV *coro_sv)
926	{	1034	{
927	int prio;
928
929	if (SvTYPE (sv) != SVt_PVHV)
930	croak ("Coro::ready tried to enqueue something that is not a coroutine");
931
932	prio = SvSTATE (sv)->prio;
933
934	av_push (coro_ready [prio - PRIO_MIN], sv);	1035	av_push (coro_ready [SvSTATE (coro_sv)->prio - PRIO_MIN], coro_sv);
935	coro_nready++;
936	}	1036	}
937		1037
938	static SV *	1038	static SV *
939	coro_deq (int min_prio)	1039	coro_deq (pTHX_ int min_prio)
940	{	1040	{
941	int prio = PRIO_MAX - PRIO_MIN;	1041	int prio = PRIO_MAX - PRIO_MIN;
942		1042
943	min_prio -= PRIO_MIN;	1043	min_prio -= PRIO_MIN;
944	if (min_prio < 0)	1044	if (min_prio < 0)
945	min_prio = 0;	1045	min_prio = 0;
946		1046
947	for (prio = PRIO_MAX - PRIO_MIN + 1; --prio >= min_prio; )	1047	for (prio = PRIO_MAX - PRIO_MIN + 1; --prio >= min_prio; )
948	if (AvFILLp (coro_ready [prio]) >= 0)	1048	if (AvFILLp (coro_ready [prio]) >= 0)
949	{
950	coro_nready--;
951	return av_shift (coro_ready [prio]);	1049	return av_shift (coro_ready [prio]);
952	}
953		1050
954	return 0;	1051	return 0;
955	}	1052	}
956		1053
957	static void	1054	static int
958	api_ready (SV *coro)	1055	api_ready (SV *coro_sv)
959	{	1056	{
960	dTHX;	1057	dTHX;
		1058	struct coro *coro;
961		1059
962	if (SvROK (coro))	1060	if (SvROK (coro_sv))
963	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;
964		1069
965	LOCK;	1070	LOCK;
966	coro_enq (SvREFCNT_inc (coro));	1071	coro_enq (aTHX_ SvREFCNT_inc (coro_sv));
		1072	++coro_nready;
967	UNLOCK;	1073	UNLOCK;
968	}
969		1074
		1075	return 1;
		1076	}
		1077
970	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
971	prepare_schedule (struct transfer_args *ta)	1086	prepare_schedule (pTHX_ struct transfer_args *ta)
972	{	1087	{
973	SV current, prev, *next;	1088	SV prev_sv, next_sv;
974
975	current = GvSV (coro_current);
976		1089
977	for (;;)	1090	for (;;)
978	{	1091	{
979	LOCK;	1092	LOCK;
980	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;
981	UNLOCK;	1125	UNLOCK;
982
983	if (next)
984	break;	1126	break;
985
986	{
987	dSP;
988
989	ENTER;
990	SAVETMPS;
991
992	PUSHMARK (SP);
993	PUTBACK;
994	call_sv (GvSV (coro_idle), G_DISCARD);
995
996	FREETMPS;
997	LEAVE;
998	}	1127	}
999	}
1000
1001	prev = SvRV (current);
1002	SvRV (current) = next;
1003		1128
1004	/* 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
1005	LOCK;	1137	LOCK;
1006	free_coro_mortal ();	1138	free_coro_mortal (aTHX);
		1139	coro_mortal = prev_sv;
1007	UNLOCK;	1140	UNLOCK;
1008	coro_mortal = prev;
1009
1010	ta->prev = SvSTATE (prev);
1011	ta->next = SvSTATE (next);
1012	ta->flags = TRANSFER_SAVE_ALL;
1013	}	1141	}
1014		1142
1015	static void	1143	static void
1016	prepare_cede (struct transfer_args *ta)	1144	prepare_cede (pTHX_ struct transfer_args *ta)
1017	{	1145	{
1018	LOCK;	1146	api_ready (coro_current);
1019	coro_enq (SvREFCNT_inc (SvRV (GvSV (coro_current))));
1020	UNLOCK;
1021
1022	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;
1023	}	1162	}
1024		1163
1025	static void	1164	static void
1026	api_schedule (void)	1165	api_schedule (void)
1027	{	1166	{
1028	dTHX;	1167	dTHX;
1029	struct transfer_args ta;	1168	struct transfer_args ta;
1030		1169
1031	prepare_schedule (&ta);	1170	prepare_schedule (aTHX_ &ta);
1032	TRANSFER (ta);	1171	TRANSFER (ta);
1033	}	1172	}
1034		1173
1035	static void	1174	static int
1036	api_cede (void)	1175	api_cede (void)
1037	{	1176	{
1038	dTHX;	1177	dTHX;
1039	struct transfer_args ta;	1178	struct transfer_args ta;
1040		1179
1041	prepare_cede (&ta);	1180	prepare_cede (aTHX_ &ta);
		1181
		1182	if (ta.prev != ta.next)
		1183	{
1042	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;
1043	}	1204	}
1044		1205
1045	MODULE = Coro::State PACKAGE = Coro::State	1206	MODULE = Coro::State PACKAGE = Coro::State
1046		1207
1047	PROTOTYPES: DISABLE	1208	PROTOTYPES: DISABLE
…		…
1053	#endif	1214	#endif
1054	BOOT_PAGESIZE;	1215	BOOT_PAGESIZE;
1055		1216
1056	coro_state_stash = gv_stashpv ("Coro::State", TRUE);	1217	coro_state_stash = gv_stashpv ("Coro::State", TRUE);
1057		1218
1058	newCONSTSUB (coro_state_stash, "SAVE_DEFAV", newSViv (TRANSFER_SAVE_DEFAV));	1219	newCONSTSUB (coro_state_stash, "SAVE_DEFAV", newSViv (CORO_SAVE_DEFAV));
1059	newCONSTSUB (coro_state_stash, "SAVE_DEFSV", newSViv (TRANSFER_SAVE_DEFSV));	1220	newCONSTSUB (coro_state_stash, "SAVE_DEFSV", newSViv (CORO_SAVE_DEFSV));
1060	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));
1061		1226
1062	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;
1063		1232
1064	coroapi.ver = CORO_API_VERSION;	1233	coroapi.ver = CORO_API_VERSION;
1065	coroapi.transfer = api_transfer;	1234	coroapi.transfer = api_transfer;
1066		1235
1067	assert (("PRIO_NORMAL must be 0", !PRIO_NORMAL));	1236	assert (("PRIO_NORMAL must be 0", !PRIO_NORMAL));
…		…
1075	HV *hv;	1244	HV *hv;
1076	int i;	1245	int i;
1077		1246
1078	Newz (0, coro, 1, struct coro);	1247	Newz (0, coro, 1, struct coro);
1079	coro->args = newAV ();	1248	coro->args = newAV ();
		1249	coro->save = CORO_SAVE_DEF;
		1250	coro->flags = CF_NEW;
1080		1251
		1252	if (coro_first) coro_first->prev = coro;
		1253	coro->next = coro_first;
		1254	coro_first = coro;
		1255
1081	hv = newHV ();	1256	coro->hv = hv = newHV ();
1082	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;
1083	RETVAL = sv_bless (newRV_noinc ((SV *)hv), gv_stashpv (klass, 1));	1258	RETVAL = sv_bless (newRV_noinc ((SV *)hv), gv_stashpv (klass, 1));
1084		1259
1085	for (i = 1; i < items; i++)	1260	for (i = 1; i < items; i++)
1086	av_push (coro->args, newSVsv (ST (i)));	1261	av_push (coro->args, newSVsv (ST (i)));
1087	}	1262	}
1088	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:
1089	RETVAL	1282	RETVAL
1090		1283
1091	void	1284	void
1092	_set_stacklevel (...)	1285	_set_stacklevel (...)
1093	ALIAS:	1286	ALIAS:
1094	Coro::State::transfer = 1	1287	Coro::State::transfer = 1
1095	Coro::schedule = 2	1288	Coro::schedule = 2
1096	Coro::cede = 3	1289	Coro::cede = 3
1097	Coro::Cont::yield = 4	1290	Coro::cede_notself = 4
1098	CODE:	1291	CODE:
1099	{	1292	{
1100	struct transfer_args ta;	1293	struct transfer_args ta;
1101		1294
1102	switch (ix)	1295	switch (ix)
1103	{	1296	{
1104	case 0:	1297	case 0:
1105	ta.prev = (struct coro )INT2PTR (coro_cctx , SvIV (ST (0)));	1298	ta.prev = (struct coro )INT2PTR (coro_cctx , SvIV (ST (0)));
1106	ta.next = 0;	1299	ta.next = 0;
1107	ta.flags = TRANSFER_SET_STACKLEVEL;
1108	break;	1300	break;
1109		1301
1110	case 1:	1302	case 1:
1111	if (items != 3)	1303	if (items != 2)
1112	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);
1113		1305
1114	prepare_transfer (&ta, ST (0), ST (1), SvIV (ST (2)));	1306	prepare_transfer (aTHX_ &ta, ST (0), ST (1));
1115	break;	1307	break;
1116		1308
1117	case 2:	1309	case 2:
1118	prepare_schedule (&ta);	1310	prepare_schedule (aTHX_ &ta);
1119	break;	1311	break;
1120		1312
1121	case 3:	1313	case 3:
1122	prepare_cede (&ta);	1314	prepare_cede (aTHX_ &ta);
1123	break;	1315	break;
1124		1316
1125	case 4:	1317	case 4:
1126	{	1318	if (!prepare_cede_notself (aTHX_ &ta))
1127	SV *yieldstack;	1319	XSRETURN_EMPTY;
1128	SV *sv;
1129	AV *defav = GvAV (PL_defgv);
1130		1320
1131	yieldstack = *hv_fetch (
1132	(HV *)SvRV (GvSV (coro_current)),
1133	"yieldstack", sizeof ("yieldstack") - 1,
1134	0
1135	);
1136
1137	/* set up @_ -- ugly */
1138	av_clear (defav);
1139	av_fill (defav, items - 1);
1140	while (items--)
1141	av_store (defav, items, SvREFCNT_inc (ST(items)));
1142
1143	sv = av_pop ((AV *)SvRV (yieldstack));
1144	ta.prev = SvSTATE (av_fetch ((AV )SvRV (sv), 0, 0));
1145	ta.next = SvSTATE (av_fetch ((AV )SvRV (sv), 1, 0));
1146	ta.flags = 0;
1147	SvREFCNT_dec (sv);
1148	}
1149	break;	1321	break;
1150
1151	}	1322	}
1152		1323
		1324	BARRIER;
1153	TRANSFER (ta);	1325	TRANSFER (ta);
1154	}
1155		1326
1156	void	1327	if (GIMME_V != G_VOID && ta.next != ta.prev)
1157	_clone_state_from (SV dst, SV src)	1328	XSRETURN_YES;
		1329	}
		1330
		1331	bool
		1332	_destroy (SV *coro_sv)
1158	CODE:	1333	CODE:
1159	{	1334	RETVAL = coro_state_destroy (aTHX_ SvSTATE (coro_sv));
1160	struct coro *coro_src = SvSTATE (src);	1335	OUTPUT:
1161		1336	RETVAL
1162	sv_unmagic (SvRV (dst), PERL_MAGIC_ext);
1163
1164	++coro_src->refcnt;
1165	sv_magicext (SvRV (dst), 0, PERL_MAGIC_ext, &coro_state_vtbl, (char *)coro_src, 0)->mg_flags \|= MGf_DUP;
1166	}
1167		1337
1168	void	1338	void
1169	_exit (code)	1339	_exit (code)
1170	int code	1340	int code
1171	PROTOTYPE: $	1341	PROTOTYPE: $
1172	CODE:	1342	CODE:
1173	_exit (code);	1343	_exit (code);
1174		1344
1175	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
1176	cctx_count ()	1355	cctx_count ()
1177	CODE:	1356	CODE:
1178	RETVAL = cctx_count;	1357	RETVAL = cctx_count;
1179	OUTPUT:	1358	OUTPUT:
1180	RETVAL	1359	RETVAL
…		…
1184	CODE:	1363	CODE:
1185	RETVAL = cctx_idle;	1364	RETVAL = cctx_idle;
1186	OUTPUT:	1365	OUTPUT:
1187	RETVAL	1366	RETVAL
1188		1367
		1368	void
		1369	list ()
		1370	PPCODE:
		1371	{
		1372	struct coro *coro;
		1373	for (coro = 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
1189	MODULE = Coro::State PACKAGE = Coro	1437	MODULE = Coro::State PACKAGE = Coro
1190		1438
1191	BOOT:	1439	BOOT:
1192	{	1440	{
1193	int i;	1441	int i;
…		…
1199	newCONSTSUB (coro_stash, "PRIO_NORMAL", newSViv (PRIO_NORMAL));	1447	newCONSTSUB (coro_stash, "PRIO_NORMAL", newSViv (PRIO_NORMAL));
1200	newCONSTSUB (coro_stash, "PRIO_LOW", newSViv (PRIO_LOW));	1448	newCONSTSUB (coro_stash, "PRIO_LOW", newSViv (PRIO_LOW));
1201	newCONSTSUB (coro_stash, "PRIO_IDLE", newSViv (PRIO_IDLE));	1449	newCONSTSUB (coro_stash, "PRIO_IDLE", newSViv (PRIO_IDLE));
1202	newCONSTSUB (coro_stash, "PRIO_MIN", newSViv (PRIO_MIN));	1450	newCONSTSUB (coro_stash, "PRIO_MIN", newSViv (PRIO_MIN));
1203		1451
1204	coro_current = gv_fetchpv ("Coro::current", TRUE, SVt_PV);	1452	coro_current = get_sv ("Coro::current", FALSE);
1205	coro_idle = gv_fetchpv ("Coro::idle" , TRUE, SVt_PV);	1453	SvREADONLY_on (coro_current);
1206		1454
1207	for (i = PRIO_MAX - PRIO_MIN + 1; i--; )	1455	for (i = PRIO_MAX - PRIO_MIN + 1; i--; )
1208	coro_ready[i] = newAV ();	1456	coro_ready[i] = newAV ();
1209		1457
1210	{	1458	{
1211	SV *sv = perl_get_sv("Coro::API", 1);	1459	SV *sv = perl_get_sv("Coro::API", 1);
1212		1460
1213	coroapi.schedule = api_schedule;	1461	coroapi.schedule = api_schedule;
		1462	coroapi.save = api_save;
1214	coroapi.cede = api_cede;	1463	coroapi.cede = api_cede;
		1464	coroapi.cede_notself = api_cede_notself;
1215	coroapi.ready = api_ready;	1465	coroapi.ready = api_ready;
		1466	coroapi.is_ready = api_is_ready;
1216	coroapi.nready = &coro_nready;	1467	coroapi.nready = &coro_nready;
1217	coroapi.current = coro_current;	1468	coroapi.current = coro_current;
1218		1469
1219	GCoroAPI = &coroapi;	1470	GCoroAPI = &coroapi;
1220	sv_setiv (sv, (IV)&coroapi);	1471	sv_setiv (sv, (IV)&coroapi);
1221	SvREADONLY_on (sv);	1472	SvREADONLY_on (sv);
1222	}	1473	}
1223	}	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)));
1224		1482
1225	int	1483	int
1226	prio (Coro::State coro, int newprio = 0)	1484	prio (Coro::State coro, int newprio = 0)
1227	ALIAS:	1485	ALIAS:
1228	nice = 1	1486	nice = 1
…		…
1231	RETVAL = coro->prio;	1489	RETVAL = coro->prio;
1232		1490
1233	if (items > 1)	1491	if (items > 1)
1234	{	1492	{
1235	if (ix)	1493	if (ix)
1236	newprio += coro->prio;	1494	newprio = coro->prio - newprio;
1237		1495
1238	if (newprio < PRIO_MIN) newprio = PRIO_MIN;	1496	if (newprio < PRIO_MIN) newprio = PRIO_MIN;
1239	if (newprio > PRIO_MAX) newprio = PRIO_MAX;	1497	if (newprio > PRIO_MAX) newprio = PRIO_MAX;
1240		1498
1241	coro->prio = newprio;	1499	coro->prio = newprio;
1242	}	1500	}
1243	}	1501	}
		1502	OUTPUT:
		1503	RETVAL
1244		1504
1245	void	1505	SV *
1246	ready (SV *self)	1506	ready (SV *self)
1247	PROTOTYPE: $	1507	PROTOTYPE: $
1248	CODE:	1508	CODE:
1249	api_ready (self);	1509	RETVAL = boolSV (api_ready (self));
		1510	OUTPUT:
		1511	RETVAL
1250		1512
1251	int	1513	int
1252	nready (...)	1514	nready (...)
1253	PROTOTYPE:	1515	PROTOTYPE:
1254	CODE:	1516	CODE:
…		…
1260		1522
1261	SV *	1523	SV *
1262	_get_state ()	1524	_get_state ()
1263	CODE:	1525	CODE:
1264	{	1526	{
1265	struct {	1527	struct io_state *data;
1266	int errorno;
1267	int laststype;
1268	int laststatval;
1269	Stat_t statcache;
1270	} data;
1271		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
1272	data.errorno = errno;	1534	data->errorno = errno;
1273	data.laststype = PL_laststype;	1535	data->laststype = PL_laststype;
1274	data.laststatval = PL_laststatval;	1536	data->laststatval = PL_laststatval;
1275	data.statcache = PL_statcache;	1537	data->statcache = PL_statcache;
1276
1277	RETVAL = newSVpvn ((char *)&data, sizeof data);
1278	}	1538	}
1279	OUTPUT:	1539	OUTPUT:
1280	RETVAL	1540	RETVAL
1281		1541
1282	void	1542	void
1283	_set_state (char *data_)	1543	_set_state (char *data_)
1284	PROTOTYPE: $	1544	PROTOTYPE: $
1285	CODE:	1545	CODE:
1286	{	1546	{
1287	struct {	1547	struct io_state data = (void )data_;
1288	int errorno;
1289	int laststype;
1290	int laststatval;
1291	Stat_t statcache;
1292	} data = (void )data_;
1293		1548
1294	errno = data->errorno;	1549	errno = data->errorno;
1295	PL_laststype = data->laststype;	1550	PL_laststype = data->laststype;
1296	PL_laststatval = data->laststatval;	1551	PL_laststatval = data->laststatval;
1297	PL_statcache = data->statcache;	1552	PL_statcache = data->statcache;
1298	}	1553	}
		1554

Diff Legend

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

Comparing Coro/Coro/State.xs (file contents): Revision 1.107 by root, Mon Nov 27 02:15:51 2006 UTC vs. Revision 1.158 by root, Fri Sep 21 02:23:48 2007 UTC

Diff Legend

Comparing Coro/Coro/State.xs (file contents):
Revision 1.107 by root, Mon Nov 27 02:15:51 2006 UTC vs.
Revision 1.158 by root, Fri Sep 21 02:23:48 2007 UTC