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Comparing Coro/Coro/State.xs (file contents):
Revision 1.105 by root, Mon Nov 27 02:01:33 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
		11	#include <stdio.h>
		12	#include <errno.h>
		13	#include <assert.h>
		14
		15	#ifdef HAVE_MMAP
		16	# include <unistd.h>
		17	# include <sys/mman.h>
		18	# ifndef MAP_ANONYMOUS
		19	# ifdef MAP_ANON
		20	# define MAP_ANONYMOUS MAP_ANON
		21	# else
		22	# undef HAVE_MMAP
		23	# endif
		24	# endif
		25	# include <limits.h>
		26	# ifndef PAGESIZE
		27	# define PAGESIZE pagesize
		28	# define BOOT_PAGESIZE pagesize = sysconf (_SC_PAGESIZE)
		29	static long pagesize;
		30	# else
		31	# define BOOT_PAGESIZE (void)0
		32	# endif
		33	#else
		34	# define PAGESIZE 0
		35	# define BOOT_PAGESIZE (void)0
		36	#endif
		37
9	#if USE_VALGRIND	38	#if CORO_USE_VALGRIND
10	# include <valgrind/valgrind.h>	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)
11	#endif	43	#endif
		44
		45	/* the maximum number of idle cctx that will be pooled */
		46	#define MAX_IDLE_CCTX 8
12		47
13	#define PERL_VERSION_ATLEAST(a,b,c) \	48	#define PERL_VERSION_ATLEAST(a,b,c) \
14	(PERL_REVISION > (a) \	49	(PERL_REVISION > (a) \
15	|| (PERL_REVISION == (a) \	50	|| (PERL_REVISION == (a) \
16	&& (PERL_VERSION > (b) \	51	&& (PERL_VERSION > (b) \
…		…
35	# ifndef IS_PADCONST	70	# ifndef IS_PADCONST
36	# define IS_PADCONST(v) 0	71	# define IS_PADCONST(v) 0
37	# endif	72	# endif
38	#endif	73	#endif
39		74
40	#include <stdio.h>	75	/* 5.8.7 */
41	#include <errno.h>	76	#ifndef SvRV_set
		77	# define SvRV_set(s,v) SvRV(s) = (v)
		78	#endif
42		79
43	#if !__i386 && !__x86_64 && !__powerpc && !__m68k && !__alpha && !__mips && !__sparc64	80	#if !__i386 && !__x86_64 && !__powerpc && !__m68k && !__alpha && !__mips && !__sparc64
44	# undef STACKGUARD	81	# undef CORO_STACKGUARD
45	#endif
46
47	#ifndef STACKGUARD
48	# define STACKGUARD 0
49	#endif
50
51	#ifdef HAVE_MMAP
52	# include <unistd.h>
53	# include <sys/mman.h>
54	# ifndef MAP_ANONYMOUS
55	# ifdef MAP_ANON
56	# define MAP_ANONYMOUS MAP_ANON
57	# else
58	# undef HAVE_MMAP
59	# endif
60	# endif	82	#endif
61	# include <limits.h>	83
62	# ifndef PAGESIZE	84	#ifndef CORO_STACKGUARD
63	# define PAGESIZE pagesize	85	# define CORO_STACKGUARD 0
64	# define BOOT_PAGESIZE pagesize = sysconf (_SC_PAGESIZE)
65	static long pagesize;
66	# else
67	# define BOOT_PAGESIZE
68	# endif	86	#endif
69	#endif
70		87
71	/* The next macro should declare a variable stacklevel that contains and approximation	88	/* prefer perl internal functions over our own? */
72	* to the current C stack pointer. Its property is that it changes with each call	89	#ifndef CORO_PREFER_PERL_FUNCTIONS
73	* and should be unique. */	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. */
74	#define dSTACKLEVEL int stacklevel	95	#define dSTACKLEVEL volatile char stacklevel
75	#define STACKLEVEL ((void *)&stacklevel)	96	#define STACKLEVEL ((void *)&stacklevel)
76		97
77	#define IN_DESTRUCT (PL_main_cv == Nullcv)	98	#define IN_DESTRUCT (PL_main_cv == Nullcv)
78		99
79	#if __GNUC__ >= 3	100	#if __GNUC__ >= 3
80	# define attribute(x) __attribute__(x)	101	# define attribute(x) __attribute__(x)
		102	# define BARRIER __asm__ __volatile__ ("" : : : "memory")
81	#else	103	#else
82	# define attribute(x)	104	# define attribute(x)
		105	# define BARRIER
83	#endif	106	#endif
84		107
85	#define NOINLINE attribute ((noinline))	108	#define NOINLINE attribute ((noinline))
86		109
87	#include "CoroAPI.h"	110	#include "CoroAPI.h"
88
89	#define TRANSFER_SET_STACKLEVEL 0x8bfbfbfb /* magic cookie */
90		111
91	#ifdef USE_ITHREADS	112	#ifdef USE_ITHREADS
92	static perl_mutex coro_mutex;	113	static perl_mutex coro_mutex;
93	# define LOCK do { MUTEX_LOCK (&coro_mutex); } while (0)	114	# define LOCK do { MUTEX_LOCK (&coro_mutex); } while (0)
94	# define UNLOCK do { MUTEX_UNLOCK (&coro_mutex); } while (0)	115	# define UNLOCK do { MUTEX_UNLOCK (&coro_mutex); } while (0)
95	#else	116	#else
96	# define LOCK (void)0	117	# define LOCK (void)0
97	# define UNLOCK (void)0	118	# define UNLOCK (void)0
98	#endif	119	#endif
99		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;
100	static struct CoroAPI coroapi;	131	static struct CoroAPI coroapi;
101	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;
102	static HV *coro_state_stash, *coro_stash;	134	static HV *coro_state_stash, *coro_stash;
103	static SV *coro_mortal; /* will be freed after next transfer */	135	static SV *coro_mortal; /* will be freed after next transfer */
104		136
		137	static struct coro_cctx *cctx_first;
		138	static int cctx_count, cctx_idle;
		139
105	/* this is a structure representing a c-level coroutine */	140	/* this is a structure representing a c-level coroutine */
106	typedef struct coro_stack {	141	typedef struct coro_cctx {
107	struct coro_stack *next;	142	struct coro_cctx *next;
108		143
109	/* the stack */	144	/* the stack */
110	void *sptr;	145	void *sptr;
111	long ssize; /* positive == mmap, otherwise malloc */	146	size_t ssize;
112		147
113	/* cpu state */	148	/* cpu state */
114	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 */
115	JMPENV *top_env;	151	JMPENV *top_env;
116	coro_context cctx;	152	coro_context cctx;
117		153
118	#if USE_VALGRIND	154	#if CORO_USE_VALGRIND
119	int valgrind_id;	155	int valgrind_id;
120	#endif	156	#endif
121	} coro_stack;	157	char inuse, mapped;
		158	} coro_cctx;
		159
		160	enum {
		161	CF_RUNNING = 0x0001, /* coroutine is running */
		162	CF_READY = 0x0002, /* coroutine is ready */
		163	CF_NEW = 0x0004, /* has never been switched to */
		164	CF_DESTROYED = 0x0008, /* coroutine data has been freed */
		165	};
122		166
123	/* this is a structure representing a perl-level coroutine */	167	/* this is a structure representing a perl-level coroutine */
124	struct coro {	168	struct coro {
125	/* the c coroutine allocated to this perl coroutine, if any */	169	/* the c coroutine allocated to this perl coroutine, if any */
126	coro_stack *stack;	170	coro_cctx *cctx;
127		171
128	/* data associated with this coroutine (initial args) */	172	/* data associated with this coroutine (initial args) */
129	AV *args;	173	AV *args;
130	int refcnt;	174	int refcnt;
		175	int save; /* CORO_SAVE flags */
		176	int flags; /* CF_ flags */
131		177
132	/* optionally saved, might be zero */	178	/* optionally saved, might be zero */
133	AV *defav;	179	AV *defav; /* @_ */
134	SV *defsv;	180	SV *defsv; /* $_ */
135	SV *errsv;	181	SV *errsv; /* $@ */
		182	GV *deffh; /* default filehandle */
		183	SV *irssv; /* $/ */
		184	SV *irssv_sv; /* real $/ cache */
136		185
137	/* saved global state not related to stacks */	186	#define VAR(name,type) type name;
138	U8 dowarn;	187	# include "state.h"
139	I32 in_eval;	188	#undef VAR
140
141	/* the stacks and related info (callchain etc..) */
142	PERL_SI *curstackinfo;
143	AV *curstack;
144	AV *mainstack;
145	SV **stack_sp;
146	OP *op;
147	SV **curpad;
148	AV *comppad;
149	CV *compcv;
150	SV **stack_base;
151	SV **stack_max;
152	SV **tmps_stack;
153	I32 tmps_floor;
154	I32 tmps_ix;
155	I32 tmps_max;
156	I32 *markstack;
157	I32 *markstack_ptr;
158	I32 *markstack_max;
159	I32 *scopestack;
160	I32 scopestack_ix;
161	I32 scopestack_max;
162	ANY *savestack;
163	I32 savestack_ix;
164	I32 savestack_max;
165	OP **retstack;
166	I32 retstack_ix;
167	I32 retstack_max;
168	PMOP *curpm;
169	COP *curcop;
170		189
171	/* coro process data */	190	/* coro process data */
172	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 */
173	};	196	};
174		197
175	typedef struct coro *Coro__State;	198	typedef struct coro *Coro__State;
176	typedef struct coro *Coro__State_or_hashref;	199	typedef struct coro *Coro__State_or_hashref;
177		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
178	static AV *	218	static AV *
179	coro_clone_padlist (CV *cv)	219	coro_clone_padlist (pTHX_ CV *cv)
180	{	220	{
181	AV *padlist = CvPADLIST (cv);	221	AV *padlist = CvPADLIST (cv);
182	AV *newpadlist, *newpad;	222	AV *newpadlist, *newpad;
183		223
184	newpadlist = newAV ();	224	newpadlist = newAV ();
…		…
196		236
197	return newpadlist;	237	return newpadlist;
198	}	238	}
199		239
200	static void	240	static void
201	free_padlist (AV *padlist)	241	free_padlist (pTHX_ AV *padlist)
202	{	242	{
203	/* may be during global destruction */	243	/* may be during global destruction */
204	if (SvREFCNT (padlist))	244	if (SvREFCNT (padlist))
205	{	245	{
206	I32 i = AvFILLp (padlist);	246	I32 i = AvFILLp (padlist);
…		…
227	AV *padlist;	267	AV *padlist;
228	AV *av = (AV *)mg->mg_obj;	268	AV *av = (AV *)mg->mg_obj;
229		269
230	/* casting is fun. */	270	/* casting is fun. */
231	while (&PL_sv_undef != (SV *)(padlist = (AV *)av_pop (av)))	271	while (&PL_sv_undef != (SV *)(padlist = (AV *)av_pop (av)))
232	free_padlist (padlist);	272	free_padlist (aTHX_ padlist);
233		273
234	SvREFCNT_dec (av);	274	SvREFCNT_dec (av);
235		275
236	return 0;	276	return 0;
237	}	277	}
238		278
239	#define PERL_MAGIC_coro PERL_MAGIC_ext	279	#define PERL_MAGIC_coro PERL_MAGIC_ext
240		280
241	static MGVTBL vtbl_coro = {0, 0, 0, 0, coro_cv_free};	281	static MGVTBL vtbl_coro = {0, 0, 0, 0, coro_cv_free};
242		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
243	/* the next two functions merely cache the padlists */	290	/* the next two functions merely cache the padlists */
244	static void	291	static void
245	get_padlist (CV *cv)	292	get_padlist (pTHX_ CV *cv)
246	{	293	{
247	MAGIC *mg = mg_find ((SV *)cv, PERL_MAGIC_coro);	294	MAGIC *mg = CORO_MAGIC (cv);
		295	AV *av;
248		296
249	if (mg && AvFILLp ((AV *)mg->mg_obj) >= 0)	297	if (mg && AvFILLp ((av = (AV *)mg->mg_obj)) >= 0)
250	CvPADLIST (cv) = (AV *)av_pop ((AV *)mg->mg_obj);	298	CvPADLIST (cv) = (AV *)AvARRAY (av)[AvFILLp (av)--];
251	else	299	else
252	{	300	{
253	#if 0	301	#if CORO_PREFER_PERL_FUNCTIONS
254	/* this is probably cleaner, but also slower? */	302	/* this is probably cleaner, but also slower? */
255	CV *cp = Perl_cv_clone (cv);	303	CV *cp = Perl_cv_clone (cv);
256	CvPADLIST (cv) = CvPADLIST (cp);	304	CvPADLIST (cv) = CvPADLIST (cp);
257	CvPADLIST (cp) = 0;	305	CvPADLIST (cp) = 0;
258	SvREFCNT_dec (cp);	306	SvREFCNT_dec (cp);
259	#else	307	#else
260	CvPADLIST (cv) = coro_clone_padlist (cv);	308	CvPADLIST (cv) = coro_clone_padlist (aTHX_ cv);
261	#endif	309	#endif
262	}	310	}
263	}	311	}
264		312
265	static void	313	static void
266	put_padlist (CV *cv)	314	put_padlist (pTHX_ CV *cv)
267	{	315	{
268	MAGIC *mg = mg_find ((SV *)cv, PERL_MAGIC_coro);	316	MAGIC *mg = CORO_MAGIC (cv);
		317	AV *av;
269		318
270	if (!mg)	319	if (!mg)
271	{	320	{
272	sv_magic ((SV *)cv, 0, PERL_MAGIC_coro, 0, 0);	321	sv_magic ((SV *)cv, 0, PERL_MAGIC_coro, 0, 0);
273	mg = mg_find ((SV *)cv, PERL_MAGIC_coro);	322	mg = mg_find ((SV *)cv, PERL_MAGIC_coro);
274	mg->mg_virtual = &vtbl_coro;	323	mg->mg_virtual = &vtbl_coro;
275	mg->mg_obj = (SV *)newAV ();	324	mg->mg_obj = (SV *)newAV ();
276	}	325	}
277		326
278	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);
279	}	333	}
		334
		335	/** load & save, init *******************************************************/
280		336
281	#define SB do {	337	#define SB do {
282	#define SE } while (0)	338	#define SE } while (0)
283		339
284	#define LOAD(state) load_state((state));
285	#define SAVE(state,flags) save_state((state),(flags));
286
287	#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
288		341
289	static void	342	static void
290	load_state(Coro__State c)	343	load_perl (pTHX_ Coro__State c)
291	{	344	{
292	PL_dowarn = c->dowarn;	345	#define VAR(name,type) PL_ ## name = c->name;
293	PL_in_eval = c->in_eval;	346	# include "state.h"
294		347	#undef VAR
295	PL_curstackinfo = c->curstackinfo;
296	PL_curstack = c->curstack;
297	PL_mainstack = c->mainstack;
298	PL_stack_sp = c->stack_sp;
299	PL_op = c->op;
300	PL_curpad = c->curpad;
301	PL_comppad = c->comppad;
302	PL_compcv = c->compcv;
303	PL_stack_base = c->stack_base;
304	PL_stack_max = c->stack_max;
305	PL_tmps_stack = c->tmps_stack;
306	PL_tmps_floor = c->tmps_floor;
307	PL_tmps_ix = c->tmps_ix;
308	PL_tmps_max = c->tmps_max;
309	PL_markstack = c->markstack;
310	PL_markstack_ptr = c->markstack_ptr;
311	PL_markstack_max = c->markstack_max;
312	PL_scopestack = c->scopestack;
313	PL_scopestack_ix = c->scopestack_ix;
314	PL_scopestack_max = c->scopestack_max;
315	PL_savestack = c->savestack;
316	PL_savestack_ix = c->savestack_ix;
317	PL_savestack_max = c->savestack_max;
318	#if !PERL_VERSION_ATLEAST (5,9,0)
319	PL_retstack = c->retstack;
320	PL_retstack_ix = c->retstack_ix;
321	PL_retstack_max = c->retstack_max;
322	#endif
323	PL_curpm = c->curpm;
324	PL_curcop = c->curcop;
325		348
326	if (c->defav) REPLACE_SV (GvAV (PL_defgv), c->defav);	349	if (c->defav) REPLACE_SV (GvAV (PL_defgv), c->defav);
327	if (c->defsv) REPLACE_SV (DEFSV , c->defsv);	350	if (c->defsv) REPLACE_SV (DEFSV , c->defsv);
328	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	}
329		368
330	{	369	{
331	dSP;	370	dSP;
332	CV *cv;	371	CV *cv;
333		372
334	/* now do the ugly restore mess */	373	/* now do the ugly restore mess */
335	while ((cv = (CV *)POPs))	374	while ((cv = (CV *)POPs))
336	{	375	{
337	AV *padlist = (AV *)POPs;
338
339	if (padlist)
340	{
341	put_padlist (cv); /* mark this padlist as available */	376	put_padlist (aTHX_ cv); /* mark this padlist as available */
342	CvPADLIST(cv) = padlist;	377	CvDEPTH (cv) = PTR2IV (POPs);
343	}	378	CvPADLIST (cv) = (AV *)POPs;
344
345	++CvDEPTH(cv);
346	}	379	}
347		380
348	PUTBACK;	381	PUTBACK;
349	}	382	}
350	}	383	}
351		384
352	static void	385	static void
353	save_state(Coro__State c, int flags)	386	save_perl (pTHX_ Coro__State c)
354	{	387	{
355	{	388	{
356	dSP;	389	dSP;
357	I32 cxix = cxstack_ix;	390	I32 cxix = cxstack_ix;
358	PERL_CONTEXT *ccstk = cxstack;	391	PERL_CONTEXT *ccstk = cxstack;
…		…
361	/*	394	/*
362	* 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
363	* (and reinitialize) all cv's in the whole callchain :(	396	* (and reinitialize) all cv's in the whole callchain :(
364	*/	397	*/
365		398
366	PUSHs (Nullsv);	399	XPUSHs (Nullsv);
367	/* this loop was inspired by pp_caller */	400	/* this loop was inspired by pp_caller */
368	for (;;)	401	for (;;)
369	{	402	{
370	while (cxix >= 0)	403	while (cxix >= 0)
371	{	404	{
372	PERL_CONTEXT *cx = &ccstk[cxix--];	405	PERL_CONTEXT *cx = &ccstk[cxix--];
373		406
374	if (CxTYPE(cx) == CXt_SUB)	407	if (CxTYPE (cx) == CXt_SUB || CxTYPE (cx) == CXt_FORMAT)
375	{	408	{
376	CV *cv = cx->blk_sub.cv;	409	CV *cv = cx->blk_sub.cv;
		410
377	if (CvDEPTH(cv))	411	if (CvDEPTH (cv))
378	{	412	{
379	EXTEND (SP, CvDEPTH(cv)*2);	413	EXTEND (SP, 3);
380
381	while (--CvDEPTH(cv))
382	{
383	/* this tells the restore code to increment CvDEPTH */
384	PUSHs (Nullsv);
385	PUSHs ((SV *)cv);
386	}
387
388	PUSHs ((SV *)CvPADLIST(cv));	414	PUSHs ((SV *)CvPADLIST (cv));
		415	PUSHs (INT2PTR (SV *, CvDEPTH (cv)));
389	PUSHs ((SV *)cv);	416	PUSHs ((SV *)cv);
390		417
		418	CvDEPTH (cv) = 0;
391	get_padlist (cv);	419	get_padlist (aTHX_ cv);
392	}	420	}
393	}	421	}
394	#ifdef CXt_FORMAT
395	else if (CxTYPE(cx) == CXt_FORMAT)
396	{
397	/* I never used formats, so how should I know how these are implemented? */
398	/* my bold guess is as a simple, plain sub... */
399	croak ("CXt_FORMAT not yet handled. Don't switch coroutines from within formats");
400	}
401	#endif
402	}	422	}
403		423
404	if (top_si->si_type == PERLSI_MAIN)	424	if (top_si->si_type == PERLSI_MAIN)
405	break;	425	break;
406		426
407	top_si = top_si->si_prev;	427	top_si = top_si->si_prev;
408	ccstk = top_si->si_cxstack;	428	ccstk = top_si->si_cxstack;
409	cxix = top_si->si_cxix;	429	cxix = top_si->si_cxix;
410	}	430	}
411		431
412	PUTBACK;	432	PUTBACK;
413	}	433	}
414		434
415	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;
416	c->defsv = flags & TRANSFER_SAVE_DEFSV ? SvREFCNT_inc (DEFSV) : 0;	436	c->defsv = c->save & CORO_SAVE_DEFSV ? SvREFCNT_inc (DEFSV) : 0;
417	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;
418		440
419	c->dowarn = PL_dowarn;	441	#define VAR(name,type)c->name = PL_ ## name;
420	c->in_eval = PL_in_eval;	442	# include "state.h"
421		443	#undef VAR
422	c->curstackinfo = PL_curstackinfo;
423	c->curstack = PL_curstack;
424	c->mainstack = PL_mainstack;
425	c->stack_sp = PL_stack_sp;
426	c->op = PL_op;
427	c->curpad = PL_curpad;
428	c->comppad = PL_comppad;
429	c->compcv = PL_compcv;
430	c->stack_base = PL_stack_base;
431	c->stack_max = PL_stack_max;
432	c->tmps_stack = PL_tmps_stack;
433	c->tmps_floor = PL_tmps_floor;
434	c->tmps_ix = PL_tmps_ix;
435	c->tmps_max = PL_tmps_max;
436	c->markstack = PL_markstack;
437	c->markstack_ptr = PL_markstack_ptr;
438	c->markstack_max = PL_markstack_max;
439	c->scopestack = PL_scopestack;
440	c->scopestack_ix = PL_scopestack_ix;
441	c->scopestack_max = PL_scopestack_max;
442	c->savestack = PL_savestack;
443	c->savestack_ix = PL_savestack_ix;
444	c->savestack_max = PL_savestack_max;
445	#if !PERL_VERSION_ATLEAST (5,9,0)
446	c->retstack = PL_retstack;
447	c->retstack_ix = PL_retstack_ix;
448	c->retstack_max = PL_retstack_max;
449	#endif
450	c->curpm = PL_curpm;
451	c->curcop = PL_curcop;
452	}	444	}
453		445
454	/*	446	/*
455	* allocate various perl stacks. This is an exact copy	447	* allocate various perl stacks. This is an exact copy
456	* of perl.c:init_stacks, except that it uses less memory	448	* of perl.c:init_stacks, except that it uses less memory
457	* on the (sometimes correct) assumption that coroutines do	449	* on the (sometimes correct) assumption that coroutines do
458	* not usually need a lot of stackspace.	450	* not usually need a lot of stackspace.
459	*/	451	*/
		452	#if CORO_PREFER_PERL_FUNCTIONS
		453	# define coro_init_stacks init_stacks
		454	#else
460	static void	455	static void
461	coro_init_stacks ()	456	coro_init_stacks (pTHX)
462	{	457	{
463	PL_curstackinfo = new_stackinfo(96, 1024/sizeof(PERL_CONTEXT) - 1);	458	PL_curstackinfo = new_stackinfo(64, 6);
464	PL_curstackinfo->si_type = PERLSI_MAIN;	459	PL_curstackinfo->si_type = PERLSI_MAIN;
465	PL_curstack = PL_curstackinfo->si_stack;	460	PL_curstack = PL_curstackinfo->si_stack;
466	PL_mainstack = PL_curstack; /* remember in case we switch stacks */	461	PL_mainstack = PL_curstack; /* remember in case we switch stacks */
467		462
468	PL_stack_base = AvARRAY(PL_curstack);	463	PL_stack_base = AvARRAY(PL_curstack);
469	PL_stack_sp = PL_stack_base;	464	PL_stack_sp = PL_stack_base;
470	PL_stack_max = PL_stack_base + AvMAX(PL_curstack);	465	PL_stack_max = PL_stack_base + AvMAX(PL_curstack);
471		466
472	New(50,PL_tmps_stack,96,SV*);	467	New(50,PL_tmps_stack,64,SV*);
473	PL_tmps_floor = -1;	468	PL_tmps_floor = -1;
474	PL_tmps_ix = -1;	469	PL_tmps_ix = -1;
475	PL_tmps_max = 96;	470	PL_tmps_max = 64;
476		471
477	New(54,PL_markstack,16,I32);	472	New(54,PL_markstack,16,I32);
478	PL_markstack_ptr = PL_markstack;	473	PL_markstack_ptr = PL_markstack;
479	PL_markstack_max = PL_markstack + 16;	474	PL_markstack_max = PL_markstack + 16;
480		475
…		…
484		479
485	New(54,PL_scopestack,16,I32);	480	New(54,PL_scopestack,16,I32);
486	PL_scopestack_ix = 0;	481	PL_scopestack_ix = 0;
487	PL_scopestack_max = 16;	482	PL_scopestack_max = 16;
488		483
489	New(54,PL_savestack,96,ANY);	484	New(54,PL_savestack,64,ANY);
490	PL_savestack_ix = 0;	485	PL_savestack_ix = 0;
491	PL_savestack_max = 96;	486	PL_savestack_max = 64;
492		487
493	#if !PERL_VERSION_ATLEAST (5,9,0)	488	#if !PERL_VERSION_ATLEAST (5,9,0)
494	New(54,PL_retstack,8,OP*);	489	New(54,PL_retstack,4,OP*);
495	PL_retstack_ix = 0;	490	PL_retstack_ix = 0;
496	PL_retstack_max = 8;	491	PL_retstack_max = 4;
497	#endif	492	#endif
498	}	493	}
		494	#endif
499		495
500	/*	496	/*
501	* destroy the stacks, the callchain etc...	497	* destroy the stacks, the callchain etc...
502	*/	498	*/
503	static void	499	static void
504	coro_destroy_stacks()	500	coro_destroy_stacks (pTHX)
505	{	501	{
506	if (!IN_DESTRUCT)	502	if (!IN_DESTRUCT)
507	{	503	{
508	/* is this ugly, I ask? */	504	/* restore all saved variables and stuff */
509	LEAVE_SCOPE (0);	505	LEAVE_SCOPE (0);
		506	assert (PL_tmps_floor == -1);
510		507
511	/* sure it is, but more important: is it correct?? :/ */	508	/* free all temporaries */
512	FREETMPS;	509	FREETMPS;
		510	assert (PL_tmps_ix == -1);
513		511
		512	/* unwind all extra stacks */
514	/*POPSTACK_TO (PL_mainstack);*//*D*//*use*/	513	POPSTACK_TO (PL_mainstack);
		514
		515	/* unwind main stack */
		516	dounwind (-1);
515	}	517	}
516		518
517	while (PL_curstackinfo->si_next)	519	while (PL_curstackinfo->si_next)
518	PL_curstackinfo = PL_curstackinfo->si_next;	520	PL_curstackinfo = PL_curstackinfo->si_next;
519		521
520	while (PL_curstackinfo)	522	while (PL_curstackinfo)
521	{	523	{
522	PERL_SI *p = PL_curstackinfo->si_prev;	524	PERL_SI *p = PL_curstackinfo->si_prev;
523		525
524	{ /*D*//*remove*/
525	dSP;
526	SWITCHSTACK (PL_curstack, PL_curstackinfo->si_stack);
527	PUTBACK; /* possibly superfluous */
528	}
529
530	if (!IN_DESTRUCT)	526	if (!IN_DESTRUCT)
531	{
532	dounwind (-1);/*D*//*remove*/
533	SvREFCNT_dec (PL_curstackinfo->si_stack);	527	SvREFCNT_dec (PL_curstackinfo->si_stack);
534	}
535		528
536	Safefree (PL_curstackinfo->si_cxstack);	529	Safefree (PL_curstackinfo->si_cxstack);
537	Safefree (PL_curstackinfo);	530	Safefree (PL_curstackinfo);
538	PL_curstackinfo = p;	531	PL_curstackinfo = p;
539	}	532	}
…		…
545	#if !PERL_VERSION_ATLEAST (5,9,0)	538	#if !PERL_VERSION_ATLEAST (5,9,0)
546	Safefree (PL_retstack);	539	Safefree (PL_retstack);
547	#endif	540	#endif
548	}	541	}
549		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
550	static void	576	static void
551	setup_coro (struct coro *coro)	577	setup_coro (pTHX_ struct coro *coro)
552	{	578	{
553	/*	579	/*
554	* emulate part of the perl startup here.	580	* emulate part of the perl startup here.
555	*/	581	*/
556
557	coro_init_stacks ();	582	coro_init_stacks (aTHX);
558		583
		584	PL_curcop = &PL_compiling;
		585	PL_in_eval = EVAL_NULL;
559	PL_curcop = 0;	586	PL_comppad = 0;
560	PL_in_eval = 0;
561	PL_curpm = 0;	587	PL_curpm = 0;
		588	PL_localizing = 0;
		589	PL_dirty = 0;
		590	PL_restartop = 0;
562		591
563	{	592	{
564	dSP;	593	dSP;
565	LOGOP myop;	594	LOGOP myop;
566		595
567	/* I have no idea why this is needed, but it is */
568	PUSHMARK (SP);
569
570	SvREFCNT_dec (GvAV (PL_defgv));	596	SvREFCNT_dec (GvAV (PL_defgv));
571	GvAV (PL_defgv) = coro->args; coro->args = 0;	597	GvAV (PL_defgv) = coro->args; coro->args = 0;
572		598
573	Zero (&myop, 1, LOGOP);	599	Zero (&myop, 1, LOGOP);
574	myop.op_next = Nullop;	600	myop.op_next = Nullop;
575	myop.op_flags = OPf_WANT_VOID;	601	myop.op_flags = OPf_WANT_VOID;
576		602
		603	PUSHMARK (SP);
		604	XPUSHs (av_shift (GvAV (PL_defgv)));
		605	PUTBACK;
577	PL_op = (OP *)&myop;	606	PL_op = (OP *)&myop;
578
579	PUSHMARK (SP);
580	XPUSHs ((SV *)get_cv ("Coro::State::coro_init", FALSE));
581	PUTBACK;
582	PL_op = PL_ppaddr[OP_ENTERSUB](aTHX);	607	PL_op = PL_ppaddr[OP_ENTERSUB](aTHX);
583	SPAGAIN;	608	SPAGAIN;
584
585	ENTER; /* necessary e.g. for dounwind */
586	}	609	}
587	}
588		610
		611	ENTER; /* necessary e.g. for dounwind */
		612	}
		613
589	static void	614	static void
590	free_coro_mortal ()	615	free_coro_mortal (pTHX)
591	{	616	{
592	if (coro_mortal)	617	if (coro_mortal)
593	{	618	{
594	SvREFCNT_dec (coro_mortal);	619	SvREFCNT_dec (coro_mortal);
595	coro_mortal = 0;	620	coro_mortal = 0;
596	}	621	}
597	}	622	}
598		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 */
599	static void NOINLINE	627	static void NOINLINE
600	prepare_cctx (coro_stack *cctx)	628	prepare_cctx (pTHX_ coro_cctx *cctx)
601	{	629	{
602	dSP;	630	dSP;
603	LOGOP myop;	631	LOGOP myop;
604		632
605	Zero (&myop, 1, LOGOP);	633	Zero (&myop, 1, LOGOP);
606	myop.op_next = PL_op;	634	myop.op_next = PL_op;
607	myop.op_flags = OPf_WANT_VOID;	635	myop.op_flags = OPf_WANT_VOID | OPf_STACKED;
608
609	sv_setiv (get_sv ("Coro::State::cctx_stack", FALSE), PTR2IV (cctx));
610		636
611	PUSHMARK (SP);	637	PUSHMARK (SP);
		638	EXTEND (SP, 2);
		639	PUSHs (sv_2mortal (newSViv (PTR2IV (cctx))));
612	XPUSHs ((SV *)get_cv ("Coro::State::cctx_init", FALSE));	640	PUSHs ((SV *)get_cv ("Coro::State::_cctx_init", FALSE));
613	PUTBACK;	641	PUTBACK;
		642	PL_op = (OP *)&myop;
614	PL_restartop = PL_ppaddr[OP_ENTERSUB](aTHX);	643	PL_op = PL_ppaddr[OP_ENTERSUB](aTHX);
615	SPAGAIN;	644	SPAGAIN;
616	}	645	}
617		646
		647	/*
		648	* this is a _very_ stripped down perl interpreter ;)
		649	*/
618	static void	650	static void
619	coro_run (void *arg)	651	coro_run (void *arg)
620	{	652	{
		653	dTHX;
		654
621	/* coro_run is the alternative epilogue of transfer() */	655	/* coro_run is the alternative tail of transfer(), so unlock here. */
622	UNLOCK;	656	UNLOCK;
623		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
624	/*	667	/*
625	* 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
626	*/	673	*/
627	PL_top_env = &PL_start_env;	674	PL_top_env = main_top_env;
628	/* inject call to cctx_init */	675	JMPENV_JUMP (2); /* I do not feel well about the hardcoded 2 at all */
629	prepare_cctx ((coro_stack *)arg);
630
631	/* somebody will hit me for both perl_run and PL_restartop */
632	perl_run (PL_curinterp);
633
634	fputs ("FATAL: C coroutine fell over the edge of the world, aborting. Did you call exit in a coroutine?\n", stderr);
635	abort ();
636	}	676	}
637		677
638	static coro_stack *	678	static coro_cctx *
639	stack_new ()	679	cctx_new ()
640	{	680	{
641	coro_stack *stack;	681	coro_cctx *cctx;
		682	void *stack_start;
		683	size_t stack_size;
642		684
		685	++cctx_count;
		686
643	New (0, stack, 1, coro_stack);	687	Newz (0, cctx, 1, coro_cctx);
644		688
645	#if HAVE_MMAP	689	#if HAVE_MMAP
646		690
647	stack->ssize = ((STACKSIZE * sizeof (long) + PAGESIZE - 1) / PAGESIZE + STACKGUARD) * PAGESIZE;	691	cctx->ssize = ((coro_stacksize * sizeof (long) + PAGESIZE - 1) / PAGESIZE + CORO_STACKGUARD) * PAGESIZE;
648	/* mmap suppsedly does allocate-on-write for us */	692	/* mmap supposedly does allocate-on-write for us */
649	stack->sptr = mmap (0, stack->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);
650		694
651	if (stack->sptr == (void *)-1)	695	if (cctx->sptr != (void *)-1)
652	{
653	perror ("FATAL: unable to mmap stack for coroutine");
654	_exit (EXIT_FAILURE);
655	}	696	{
656
657	# if STACKGUARD	697	# if CORO_STACKGUARD
658	mprotect (stack->sptr, STACKGUARD * PAGESIZE, PROT_NONE);	698	mprotect (cctx->sptr, CORO_STACKGUARD * PAGESIZE, PROT_NONE);
659	# endif	699	# endif
660		700	stack_start = CORO_STACKGUARD * PAGESIZE + (char *)cctx->sptr;
661	#else	701	stack_size = cctx->ssize - CORO_STACKGUARD * PAGESIZE;
662		702	cctx->mapped = 1;
663	stack->ssize = STACKSIZE * (long)sizeof (long);
664	New (0, stack->sptr, STACKSIZE, long);
665
666	if (!stack->sptr)
667	{	703	}
		704	else
		705	#endif
		706	{
		707	cctx->ssize = coro_stacksize * (long)sizeof (long);
		708	New (0, cctx->sptr, coro_stacksize, long);
		709
		710	if (!cctx->sptr)
		711	{
668	perror (stderr, "FATAL: unable to malloc stack for coroutine");	712	perror ("FATAL: unable to allocate stack for coroutine");
669	_exit (EXIT_FAILURE);	713	_exit (EXIT_FAILURE);
670	}	714	}
671		715
672	#endif	716	stack_start = cctx->sptr;
		717	stack_size = cctx->ssize;
		718	}
673		719
674	#if USE_VALGRIND	720	REGISTER_STACK (cctx, (char *)stack_start, (char *)stack_start + stack_size);
675	stack->valgrind_id = VALGRIND_STACK_REGISTER (
676	STACKGUARD * PAGESIZE + (char *)stack->sptr,
677	stack->ssize + (char *)stack->sptr
678	);
679	#endif
680
681	coro_create (&stack->cctx, coro_run, (void *)stack, stack->sptr, stack->ssize);	721	coro_create (&cctx->cctx, coro_run, (void *)cctx, stack_start, stack_size);
682		722
683	return stack;	723	return cctx;
684	}	724	}
685		725
686	static void	726	static void
687	stack_free (coro_stack *stack)	727	cctx_destroy (coro_cctx *cctx)
688	{	728	{
689	if (!stack)	729	if (!cctx)
690	return;	730	return;
691		731
		732	--cctx_count;
		733
692	#if USE_VALGRIND	734	#if CORO_USE_VALGRIND
693	VALGRIND_STACK_DEREGISTER (stack->valgrind_id);	735	VALGRIND_STACK_DEREGISTER (cctx->valgrind_id);
694	#endif	736	#endif
695		737
696	#if HAVE_MMAP	738	#if HAVE_MMAP
		739	if (cctx->mapped)
697	munmap (stack->sptr, stack->ssize);	740	munmap (cctx->sptr, cctx->ssize);
698	#else	741	else
		742	#endif
699	Safefree (stack->sptr);	743	Safefree (cctx->sptr);
700	#endif
701		744
702	Safefree (stack);	745	Safefree (cctx);
703	}	746	}
704		747
705	static coro_stack *stack_first;
706	static int cctx_count, cctx_idle;
707
708	static coro_stack *	748	static coro_cctx *
709	stack_get ()	749	cctx_get (pTHX)
710	{	750	{
711	coro_stack *stack;	751	while (cctx_first)
712
713	if (stack_first)
714	{	752	{
		753	coro_cctx *cctx = cctx_first;
		754	cctx_first = cctx->next;
715	--cctx_idle;	755	--cctx_idle;
716	stack = stack_first;	756
717	stack_first = stack->next;	757	if (cctx->ssize >= coro_stacksize)
		758	return cctx;
		759
		760	cctx_destroy (cctx);
718	}	761	}
719	else	762
720	{
721	++cctx_count;
722	stack = stack_new ();
723	PL_op = PL_op->op_next;	763	PL_op = PL_op->op_next;
		764	return cctx_new ();
		765	}
		766
		767	static void
		768	cctx_put (coro_cctx *cctx)
		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);
724	}	779	}
725		780
726	return stack;
727	}
728
729	static void
730	stack_put (coro_stack *stack)
731	{
732	++cctx_idle;	781	++cctx_idle;
733	stack->next = stack_first;	782	cctx->next = cctx_first;
734	stack_first = stack;	783	cctx_first = cctx;
735	}	784	}
		785
		786	/** coroutine switching *****************************************************/
736		787
737	/* never call directly, always through the coro_state_transfer global variable */	788	/* never call directly, always through the coro_state_transfer global variable */
738	static void NOINLINE	789	static void NOINLINE
739	transfer (struct coro *prev, struct coro *next, int flags)	790	transfer (pTHX_ struct coro *prev, struct coro *next)
740	{	791	{
741	dSTACKLEVEL;	792	dSTACKLEVEL;
742		793
743	/* sometimes transfer is only called to set idle_sp */	794	/* sometimes transfer is only called to set idle_sp */
744	if (flags == TRANSFER_SET_STACKLEVEL)	795	if (!next)
		796	{
745	((coro_stack *)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	}
746	else if (prev != next)	800	else if (prev != next)
747	{	801	{
748	coro_stack *prev__stack;	802	coro_cctx *prev__cctx;
		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;
749		825
750	LOCK;	826	LOCK;
751		827
752	if (next->mainstack)	828	if (next->flags & CF_NEW)
753	{	829	{
754	/* coroutine already started */	830	/* need to start coroutine */
755	SAVE (prev, flags);	831	next->flags &= ~CF_NEW;
756	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);
757	}	838	}
758	else	839	else
759	{	840	{
760	/* need to start coroutine */	841	/* coroutine already started */
761	/* first get rid of the old state */	842	save_perl (aTHX_ prev);
762	SAVE (prev, -1);	843	load_perl (aTHX_ next);
763	/* setup coroutine call */
764	setup_coro (next);
765	/* need a stack */
766	next->stack = 0;
767	}	844	}
768		845
769	if (!prev->stack)
770	/* create a new empty context */
771	Newz (0, prev->stack, 1, coro_stack);
772
773	prev__stack = prev->stack;	846	prev__cctx = prev->cctx;
774		847
775	/* possibly "free" the stack */	848	/* possibly "free" the cctx */
776	if (prev__stack->idle_sp == STACKLEVEL)	849	if (prev__cctx->idle_sp == STACKLEVEL)
777	{	850	{
778	stack_put (prev__stack);	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
779	prev->stack = 0;	854	prev->cctx = 0;
		855
		856	cctx_put (prev__cctx);
		857	prev__cctx->inuse = 0;
780	}	858	}
781		859
782	if (!next->stack)	860	if (!next->cctx)
783	next->stack = stack_get ();
784
785	if (prev__stack != next->stack)
786	{	861	{
787	prev__stack->top_env = PL_top_env;	862	next->cctx = cctx_get (aTHX);
788	PL_top_env = next->stack->top_env;	863	assert (!next->cctx->inuse);
789	coro_transfer (&prev__stack->cctx, &next->stack->cctx);	864	next->cctx->inuse = 1;
790	}	865	}
791		866
		867	if (prev__cctx != next->cctx)
		868	{
		869	prev__cctx->top_env = PL_top_env;
		870	PL_top_env = next->cctx->top_env;
		871	coro_transfer (&prev__cctx->cctx, &next->cctx->cctx);
		872	}
		873
792	free_coro_mortal ();	874	free_coro_mortal (aTHX);
793
794	UNLOCK;	875	UNLOCK;
795	}	876	}
796	}	877	}
797		878
798	struct transfer_args	879	struct transfer_args
799	{	880	{
800	struct coro *prev, *next;	881	struct coro *prev, *next;
801	int flags;
802	};	882	};
803		883
804	#define TRANSFER(ta) transfer ((ta).prev, (ta).next, (ta).flags)	884	#define TRANSFER(ta) transfer (aTHX_ (ta).prev, (ta).next)
805		885
		886	/** high level stuff ********************************************************/
		887
806	static void	888	static int
807	coro_state_destroy (struct coro *coro)	889	coro_state_destroy (pTHX_ struct coro *coro)
808	{	890	{
809	if (coro->refcnt--)	891	if (coro->flags & CF_DESTROYED)
810	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 */
811		906
812	if (coro->mainstack && coro->mainstack != main_mainstack)	907	if (coro->mainstack && coro->mainstack != main_mainstack)
813	{	908	{
814	struct coro temp;	909	struct coro temp;
815		910
816	SAVE ((&temp), TRANSFER_SAVE_ALL);	911	assert (!(coro->flags & CF_RUNNING));
817	LOAD (coro);
818		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
819	coro_destroy_stacks ();	922	coro_destroy_stacks (aTHX);
820		923
821	LOAD ((&temp)); /* this will get rid of defsv etc.. */	924	load_perl (aTHX_ &temp); /* this will get rid of defsv etc.. */
822		925
823	coro->mainstack = 0;	926	coro->mainstack = 0;
824	}	927	}
825		928
826	stack_free (coro->stack);	929	cctx_destroy (coro->cctx);
827	SvREFCNT_dec (coro->args);	930	SvREFCNT_dec (coro->args);
828	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;
829	}	937	}
830		938
831	static int	939	static int
832	coro_state_clear (pTHX_ SV *sv, MAGIC *mg)	940	coro_state_free (pTHX_ SV *sv, MAGIC *mg)
833	{	941	{
834	struct coro *coro = (struct coro *)mg->mg_ptr;	942	struct coro *coro = (struct coro *)mg->mg_ptr;
835	mg->mg_ptr = 0;	943	mg->mg_ptr = 0;
836		944
		945	coro->hv = 0;
		946
		947	if (--coro->refcnt < 0)
		948	{
837	coro_state_destroy (coro);	949	coro_state_destroy (aTHX_ coro);
		950	Safefree (coro);
		951	}
838		952
839	return 0;	953	return 0;
840	}	954	}
841		955
842	static int	956	static int
…		…
849	return 0;	963	return 0;
850	}	964	}
851		965
852	static MGVTBL coro_state_vtbl = {	966	static MGVTBL coro_state_vtbl = {
853	0, 0, 0, 0,	967	0, 0, 0, 0,
854	coro_state_clear,	968	coro_state_free,
855	0,	969	0,
856	#ifdef MGf_DUP	970	#ifdef MGf_DUP
857	coro_state_dup,	971	coro_state_dup,
858	#else	972	#else
859	# define MGf_DUP 0	973	# define MGf_DUP 0
860	#endif	974	#endif
861	};	975	};
862		976
863	static struct coro *	977	static struct coro *
864	SvSTATE (SV *coro)	978	SvSTATE_ (pTHX_ SV *coro)
865	{	979	{
866	HV *stash;	980	HV *stash;
867	MAGIC *mg;	981	MAGIC *mg;
868		982
869	if (SvROK (coro))	983	if (SvROK (coro))
…		…
875	/* very slow, but rare, check */	989	/* very slow, but rare, check */
876	if (!sv_derived_from (sv_2mortal (newRV_inc (coro)), "Coro::State"))	990	if (!sv_derived_from (sv_2mortal (newRV_inc (coro)), "Coro::State"))
877	croak ("Coro::State object required");	991	croak ("Coro::State object required");
878	}	992	}
879		993
880	mg = SvMAGIC (coro);	994	mg = CORO_MAGIC (coro);
881	assert (mg->mg_type == PERL_MAGIC_ext);
882	return (struct coro *)mg->mg_ptr;	995	return (struct coro *)mg->mg_ptr;
883	}	996	}
884		997
		998	#define SvSTATE(sv) SvSTATE_ (aTHX_ (sv))
		999
885	static void	1000	static void
886	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)
887	{	1002	{
888	ta->prev = SvSTATE (prev);	1003	ta->prev = SvSTATE (prev_sv);
889	ta->next = SvSTATE (next);	1004	ta->next = SvSTATE (next_sv);
890	ta->flags = flags;
891	}	1005	}
892		1006
893	static void	1007	static void
894	api_transfer (SV *prev, SV *next, int flags)	1008	api_transfer (SV *prev_sv, SV *next_sv)
895	{	1009	{
896	dTHX;	1010	dTHX;
897	struct transfer_args ta;	1011	struct transfer_args ta;
898		1012
899	prepare_transfer (&ta, prev, next, flags);	1013	prepare_transfer (aTHX_ &ta, prev_sv, next_sv);
900	TRANSFER (ta);	1014	TRANSFER (ta);
901	}	1015	}
902		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
903	/** Coro ********************************************************************/	1030	/** Coro ********************************************************************/
904		1031
905	#define PRIO_MAX 3
906	#define PRIO_HIGH 1
907	#define PRIO_NORMAL 0
908	#define PRIO_LOW -1
909	#define PRIO_IDLE -3
910	#define PRIO_MIN -4
911
912	/* for Coro.pm */
913	static GV *coro_current, *coro_idle;
914	static AV *coro_ready [PRIO_MAX-PRIO_MIN+1];
915	static int coro_nready;
916
917	static void	1032	static void
918	coro_enq (SV *sv)	1033	coro_enq (pTHX_ SV *coro_sv)
919	{	1034	{
920	int prio;
921
922	if (SvTYPE (sv) != SVt_PVHV)
923	croak ("Coro::ready tried to enqueue something that is not a coroutine");
924
925	prio = SvSTATE (sv)->prio;
926
927	av_push (coro_ready [prio - PRIO_MIN], sv);	1035	av_push (coro_ready [SvSTATE (coro_sv)->prio - PRIO_MIN], coro_sv);
928	coro_nready++;
929	}	1036	}
930		1037
931	static SV *	1038	static SV *
932	coro_deq (int min_prio)	1039	coro_deq (pTHX_ int min_prio)
933	{	1040	{
934	int prio = PRIO_MAX - PRIO_MIN;	1041	int prio = PRIO_MAX - PRIO_MIN;
935		1042
936	min_prio -= PRIO_MIN;	1043	min_prio -= PRIO_MIN;
937	if (min_prio < 0)	1044	if (min_prio < 0)
938	min_prio = 0;	1045	min_prio = 0;
939		1046
940	for (prio = PRIO_MAX - PRIO_MIN + 1; --prio >= min_prio; )	1047	for (prio = PRIO_MAX - PRIO_MIN + 1; --prio >= min_prio; )
941	if (AvFILLp (coro_ready [prio]) >= 0)	1048	if (AvFILLp (coro_ready [prio]) >= 0)
942	{
943	coro_nready--;
944	return av_shift (coro_ready [prio]);	1049	return av_shift (coro_ready [prio]);
945	}
946		1050
947	return 0;	1051	return 0;
948	}	1052	}
949		1053
950	static void	1054	static int
951	api_ready (SV *coro)	1055	api_ready (SV *coro_sv)
952	{	1056	{
953	dTHX;	1057	dTHX;
		1058	struct coro *coro;
954		1059
955	if (SvROK (coro))	1060	if (SvROK (coro_sv))
956	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;
957		1069
958	LOCK;	1070	LOCK;
959	coro_enq (SvREFCNT_inc (coro));	1071	coro_enq (aTHX_ SvREFCNT_inc (coro_sv));
		1072	++coro_nready;
960	UNLOCK;	1073	UNLOCK;
961	}
962		1074
		1075	return 1;
		1076	}
		1077
963	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
964	prepare_schedule (struct transfer_args *ta)	1086	prepare_schedule (pTHX_ struct transfer_args *ta)
965	{	1087	{
966	SV *current, *prev, *next;	1088	SV *prev_sv, *next_sv;
967
968	current = GvSV (coro_current);
969		1089
970	for (;;)	1090	for (;;)
971	{	1091	{
972	LOCK;	1092	LOCK;
973	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;
974	UNLOCK;	1125	UNLOCK;
975
976	if (next)
977	break;	1126	break;
978
979	{
980	dSP;
981
982	ENTER;
983	SAVETMPS;
984
985	PUSHMARK (SP);
986	PUTBACK;
987	call_sv (GvSV (coro_idle), G_DISCARD);
988
989	FREETMPS;
990	LEAVE;
991	}	1127	}
992	}
993
994	prev = SvRV (current);
995	SvRV (current) = next;
996		1128
997	/* 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
998	LOCK;	1137	LOCK;
999	free_coro_mortal ();	1138	free_coro_mortal (aTHX);
		1139	coro_mortal = prev_sv;
1000	UNLOCK;	1140	UNLOCK;
1001	coro_mortal = prev;
1002
1003	ta->prev = SvSTATE (prev);
1004	ta->next = SvSTATE (next);
1005	ta->flags = TRANSFER_SAVE_ALL;
1006	}	1141	}
1007		1142
1008	static void	1143	static void
1009	prepare_cede (struct transfer_args *ta)	1144	prepare_cede (pTHX_ struct transfer_args *ta)
1010	{	1145	{
1011	LOCK;	1146	api_ready (coro_current);
1012	coro_enq (SvREFCNT_inc (SvRV (GvSV (coro_current))));
1013	UNLOCK;
1014
1015	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;
1016	}	1162	}
1017		1163
1018	static void	1164	static void
1019	api_schedule (void)	1165	api_schedule (void)
1020	{	1166	{
1021	dTHX;	1167	dTHX;
1022	struct transfer_args ta;	1168	struct transfer_args ta;
1023		1169
1024	prepare_schedule (&ta);	1170	prepare_schedule (aTHX_ &ta);
1025	TRANSFER (ta);	1171	TRANSFER (ta);
1026	}	1172	}
1027		1173
1028	static void	1174	static int
1029	api_cede (void)	1175	api_cede (void)
1030	{	1176	{
1031	dTHX;	1177	dTHX;
1032	struct transfer_args ta;	1178	struct transfer_args ta;
1033		1179
1034	prepare_cede (&ta);	1180	prepare_cede (aTHX_ &ta);
		1181
		1182	if (ta.prev != ta.next)
		1183	{
1035	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;
1036	}	1204	}
1037		1205
1038	MODULE = Coro::State PACKAGE = Coro::State	1206	MODULE = Coro::State PACKAGE = Coro::State
1039		1207
1040	PROTOTYPES: DISABLE	1208	PROTOTYPES: DISABLE
…		…
1046	#endif	1214	#endif
1047	BOOT_PAGESIZE;	1215	BOOT_PAGESIZE;
1048		1216
1049	coro_state_stash = gv_stashpv ("Coro::State", TRUE);	1217	coro_state_stash = gv_stashpv ("Coro::State", TRUE);
1050		1218
1051	newCONSTSUB (coro_state_stash, "SAVE_DEFAV", newSViv (TRANSFER_SAVE_DEFAV));	1219	newCONSTSUB (coro_state_stash, "SAVE_DEFAV", newSViv (CORO_SAVE_DEFAV));
1052	newCONSTSUB (coro_state_stash, "SAVE_DEFSV", newSViv (TRANSFER_SAVE_DEFSV));	1220	newCONSTSUB (coro_state_stash, "SAVE_DEFSV", newSViv (CORO_SAVE_DEFSV));
1053	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));
1054		1226
1055	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;
1056		1232
1057	coroapi.ver = CORO_API_VERSION;	1233	coroapi.ver = CORO_API_VERSION;
1058	coroapi.transfer = api_transfer;	1234	coroapi.transfer = api_transfer;
1059		1235
1060	assert (("PRIO_NORMAL must be 0", !PRIO_NORMAL));	1236	assert (("PRIO_NORMAL must be 0", !PRIO_NORMAL));
…		…
1068	HV *hv;	1244	HV *hv;
1069	int i;	1245	int i;
1070		1246
1071	Newz (0, coro, 1, struct coro);	1247	Newz (0, coro, 1, struct coro);
1072	coro->args = newAV ();	1248	coro->args = newAV ();
		1249	coro->save = CORO_SAVE_DEF;
		1250	coro->flags = CF_NEW;
1073		1251
		1252	if (coro_first) coro_first->prev = coro;
		1253	coro->next = coro_first;
		1254	coro_first = coro;
		1255
1074	hv = newHV ();	1256	coro->hv = hv = newHV ();
1075	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;
1076	RETVAL = sv_bless (newRV_noinc ((SV *)hv), gv_stashpv (klass, 1));	1258	RETVAL = sv_bless (newRV_noinc ((SV *)hv), gv_stashpv (klass, 1));
1077		1259
1078	for (i = 1; i < items; i++)	1260	for (i = 1; i < items; i++)
1079	av_push (coro->args, newSVsv (ST (i)));	1261	av_push (coro->args, newSVsv (ST (i)));
1080
1081	/*coro->mainstack = 0; *//*actual work is done inside transfer */
1082	/*coro->stack = 0;*/
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_stack *, 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
		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
		1355	cctx_count ()
		1356	CODE:
		1357	RETVAL = cctx_count;
		1358	OUTPUT:
		1359	RETVAL
		1360
		1361	int
		1362	cctx_idle ()
		1363	CODE:
		1364	RETVAL = cctx_idle;
		1365	OUTPUT:
		1366	RETVAL
		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
1171	MODULE = Coro::State PACKAGE = Coro	1437	MODULE = Coro::State PACKAGE = Coro
1172		1438
1173	BOOT:	1439	BOOT:
1174	{	1440	{
1175	int i;	1441	int i;
…		…
1181	newCONSTSUB (coro_stash, "PRIO_NORMAL", newSViv (PRIO_NORMAL));	1447	newCONSTSUB (coro_stash, "PRIO_NORMAL", newSViv (PRIO_NORMAL));
1182	newCONSTSUB (coro_stash, "PRIO_LOW", newSViv (PRIO_LOW));	1448	newCONSTSUB (coro_stash, "PRIO_LOW", newSViv (PRIO_LOW));
1183	newCONSTSUB (coro_stash, "PRIO_IDLE", newSViv (PRIO_IDLE));	1449	newCONSTSUB (coro_stash, "PRIO_IDLE", newSViv (PRIO_IDLE));
1184	newCONSTSUB (coro_stash, "PRIO_MIN", newSViv (PRIO_MIN));	1450	newCONSTSUB (coro_stash, "PRIO_MIN", newSViv (PRIO_MIN));
1185		1451
1186	coro_current = gv_fetchpv ("Coro::current", TRUE, SVt_PV);	1452	coro_current = get_sv ("Coro::current", FALSE);
1187	coro_idle = gv_fetchpv ("Coro::idle" , TRUE, SVt_PV);	1453	SvREADONLY_on (coro_current);
1188		1454
1189	for (i = PRIO_MAX - PRIO_MIN + 1; i--; )	1455	for (i = PRIO_MAX - PRIO_MIN + 1; i--; )
1190	coro_ready[i] = newAV ();	1456	coro_ready[i] = newAV ();
1191		1457
1192	{	1458	{
1193	SV *sv = perl_get_sv("Coro::API", 1);	1459	SV *sv = perl_get_sv("Coro::API", 1);
1194		1460
1195	coroapi.schedule = api_schedule;	1461	coroapi.schedule = api_schedule;
		1462	coroapi.save = api_save;
1196	coroapi.cede = api_cede;	1463	coroapi.cede = api_cede;
		1464	coroapi.cede_notself = api_cede_notself;
1197	coroapi.ready = api_ready;	1465	coroapi.ready = api_ready;
		1466	coroapi.is_ready = api_is_ready;
1198	coroapi.nready = &coro_nready;	1467	coroapi.nready = &coro_nready;
1199	coroapi.current = coro_current;	1468	coroapi.current = coro_current;
1200		1469
1201	GCoroAPI = &coroapi;	1470	GCoroAPI = &coroapi;
1202	sv_setiv (sv, (IV)&coroapi);	1471	sv_setiv (sv, (IV)&coroapi);
1203	SvREADONLY_on (sv);	1472	SvREADONLY_on (sv);
1204	}	1473	}
1205	}	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)));
1206		1482
1207	int	1483	int
1208	prio (Coro::State coro, int newprio = 0)	1484	prio (Coro::State coro, int newprio = 0)
1209	ALIAS:	1485	ALIAS:
1210	nice = 1	1486	nice = 1
…		…
1213	RETVAL = coro->prio;	1489	RETVAL = coro->prio;
1214		1490
1215	if (items > 1)	1491	if (items > 1)
1216	{	1492	{
1217	if (ix)	1493	if (ix)
1218	newprio += coro->prio;	1494	newprio = coro->prio - newprio;
1219		1495
1220	if (newprio < PRIO_MIN) newprio = PRIO_MIN;	1496	if (newprio < PRIO_MIN) newprio = PRIO_MIN;
1221	if (newprio > PRIO_MAX) newprio = PRIO_MAX;	1497	if (newprio > PRIO_MAX) newprio = PRIO_MAX;
1222		1498
1223	coro->prio = newprio;	1499	coro->prio = newprio;
1224	}	1500	}
1225	}	1501	}
		1502	OUTPUT:
		1503	RETVAL
1226		1504
1227	void	1505	SV *
1228	ready (SV *self)	1506	ready (SV *self)
1229	PROTOTYPE: $	1507	PROTOTYPE: $
1230	CODE:	1508	CODE:
1231	api_ready (self);	1509	RETVAL = boolSV (api_ready (self));
		1510	OUTPUT:
		1511	RETVAL
1232		1512
1233	int	1513	int
1234	nready (...)	1514	nready (...)
1235	PROTOTYPE:	1515	PROTOTYPE:
1236	CODE:	1516	CODE:
…		…
1242		1522
1243	SV *	1523	SV *
1244	_get_state ()	1524	_get_state ()
1245	CODE:	1525	CODE:
1246	{	1526	{
1247	struct {	1527	struct io_state *data;
1248	int errorno;
1249	int laststype;
1250	int laststatval;
1251	Stat_t statcache;
1252	} data;
1253		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
1254	data.errorno = errno;	1534	data->errorno = errno;
1255	data.laststype = PL_laststype;	1535	data->laststype = PL_laststype;
1256	data.laststatval = PL_laststatval;	1536	data->laststatval = PL_laststatval;
1257	data.statcache = PL_statcache;	1537	data->statcache = PL_statcache;
1258
1259	RETVAL = newSVpvn ((char *)&data, sizeof data);
1260	}	1538	}
1261	OUTPUT:	1539	OUTPUT:
1262	RETVAL	1540	RETVAL
1263		1541
1264	void	1542	void
1265	_set_state (char *data_)	1543	_set_state (char *data_)
1266	PROTOTYPE: $	1544	PROTOTYPE: $
1267	CODE:	1545	CODE:
1268	{	1546	{
1269	struct {	1547	struct io_state *data = (void *)data_;
1270	int errorno;
1271	int laststype;
1272	int laststatval;
1273	Stat_t statcache;
1274	} *data = (void *)data_;
1275		1548
1276	errno = data->errorno;	1549	errno = data->errorno;
1277	PL_laststype = data->laststype;	1550	PL_laststype = data->laststype;
1278	PL_laststatval = data->laststatval;	1551	PL_laststatval = data->laststatval;
1279	PL_statcache = data->statcache;	1552	PL_statcache = data->statcache;
1280	}	1553	}
		1554

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