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

Comparing Coro/Coro/State.xs (file contents):
Revision 1.92 by root, Sun Nov 26 02:16:19 2006 UTC vs.
Revision 1.137 by root, Sun Jan 14 20:47:53 2007 UTC

…		…
1	#define PERL_NO_GET_CONTEXT
2
3	#include "libcoro/coro.c"	1	#include "libcoro/coro.c"
4		2
5	#include "EXTERN.h"	3	#include "EXTERN.h"
6	#include "perl.h"	4	#include "perl.h"
7	#include "XSUB.h"	5	#include "XSUB.h"
8		6
9	#include "patchlevel.h"	7	#include "patchlevel.h"
10		8
11	#if PERL_VERSION < 6	9	#include <stdio.h>
		10	#include <errno.h>
		11	#include <assert.h>
		12
		13	#ifdef HAVE_MMAP
		14	# include <unistd.h>
		15	# include <sys/mman.h>
		16	# ifndef MAP_ANONYMOUS
		17	# ifdef MAP_ANON
		18	# define MAP_ANONYMOUS MAP_ANON
		19	# else
		20	# undef HAVE_MMAP
		21	# endif
		22	# endif
		23	# include <limits.h>
		24	# ifndef PAGESIZE
		25	# define PAGESIZE pagesize
		26	# define BOOT_PAGESIZE pagesize = sysconf (_SC_PAGESIZE)
		27	static long pagesize;
		28	# else
		29	# define BOOT_PAGESIZE (void)0
		30	# endif
		31	#else
		32	# define PAGESIZE 0
		33	# define BOOT_PAGESIZE (void)0
		34	#endif
		35
		36	#if USE_VALGRIND
		37	# include <valgrind/valgrind.h>
		38	#endif
		39
		40	/* the maximum number of idle cctx that will be pooled */
		41	#define MAX_IDLE_CCTX 8
		42
		43	#define PERL_VERSION_ATLEAST(a,b,c) \
		44	(PERL_REVISION > (a) \
		45	\|\| (PERL_REVISION == (a) \
		46	&& (PERL_VERSION > (b) \
		47	\|\| (PERL_VERSION == (b) && PERLSUBVERSION >= (c)))))
		48
		49	#if !PERL_VERSION_ATLEAST (5,6,0)
12	# ifndef PL_ppaddr	50	# ifndef PL_ppaddr
13	# define PL_ppaddr ppaddr	51	# define PL_ppaddr ppaddr
14	# endif	52	# endif
15	# ifndef call_sv	53	# ifndef call_sv
16	# define call_sv perl_call_sv	54	# define call_sv perl_call_sv
27	# ifndef IS_PADCONST	65	# ifndef IS_PADCONST
28	# define IS_PADCONST(v) 0	66	# define IS_PADCONST(v) 0
29	# endif	67	# endif
30	#endif	68	#endif
31		69
32	#include <stdio.h>	70	/* 5.8.7 */
33	#include <errno.h>	71	#ifndef SvRV_set
		72	# define SvRV_set(s,v) SvRV(s) = (v)
		73	#endif
34		74
35	#if !__i386 && !__x86_64 && !__powerpc && !__m68k && !__alpha && !__mips && !__sparc64	75	#if !__i386 && !__x86_64 && !__powerpc && !__m68k && !__alpha && !__mips && !__sparc64
36	# undef STACKGUARD	76	# undef STACKGUARD
37	#endif	77	#endif
38		78
39	#ifndef STACKGUARD	79	#ifndef STACKGUARD
40	# define STACKGUARD 0	80	# define STACKGUARD 0
41	#endif	81	#endif
42		82
43	#ifdef HAVE_MMAP	83	/* prefer perl internal functions over our own? */
44	# include <unistd.h>	84	#ifndef PREFER_PERL_FUNCTIONS
45	# include <sys/mman.h>	85	# define PREFER_PERL_FUNCTIONS 0
46	# ifndef MAP_ANONYMOUS
47	# ifdef MAP_ANON
48	# define MAP_ANONYMOUS MAP_ANON
49	# else
50	# undef HAVE_MMAP
51	# endif
52	# endif
53	# include <limits.h>
54	# ifndef PAGESIZE
55	# define PAGESIZE pagesize
56	# define BOOT_PAGESIZE pagesize = sysconf (_SC_PAGESIZE)
57	static long pagesize;
58	# else
59	# define BOOT_PAGESIZE
60	# endif
61	#endif	86	#endif
62		87
63	/* The next macro should declare a variable stacklevel that contains and approximation	88	/* The next macro should declare a variable stacklevel that contains and approximation
64	* to the current C stack pointer. Its property is that it changes with each call	89	* to the current C stack pointer. Its property is that it changes with each call
65	* and should be unique. */	90	* and should be unique. */
66	#define dSTACKLEVEL int stacklevel	91	#define dSTACKLEVEL int stacklevel
67	#define STACKLEVEL ((void *)&stacklevel)	92	#define STACKLEVEL ((void *)&stacklevel)
68		93
69	#define IN_DESTRUCT (PL_main_cv == Nullcv)	94	#define IN_DESTRUCT (PL_main_cv == Nullcv)
70		95
71	#define labs(l) ((l) >= 0 ? (l) : -(l))	96	#if __GNUC__ >= 3
		97	# define attribute(x) __attribute__(x)
		98	# define BARRIER __asm__ __volatile__ ("" : : : "memory")
		99	#else
		100	# define attribute(x)
		101	# define BARRIER
		102	#endif
		103
		104	#define NOINLINE attribute ((noinline))
72		105
73	#include "CoroAPI.h"	106	#include "CoroAPI.h"
74
75	#define TRANSFER_SET_STACKLEVEL 0x8bfbfbfb /* magic cookie */
76		107
77	#ifdef USE_ITHREADS	108	#ifdef USE_ITHREADS
78	static perl_mutex coro_mutex;	109	static perl_mutex coro_mutex;
79	# define LOCK do { MUTEX_LOCK (&coro_mutex); } while (0)	110	# define LOCK do { MUTEX_LOCK (&coro_mutex); } while (0)
80	# define UNLOCK do { MUTEX_UNLOCK (&coro_mutex); } while (0)	111	# define UNLOCK do { MUTEX_UNLOCK (&coro_mutex); } while (0)
81	#else	112	#else
82	# define LOCK (void)0	113	# define LOCK (void)0
83	# define UNLOCK (void)0	114	# define UNLOCK (void)0
84	#endif	115	#endif
85		116
		117	/* helper storage struct for Coro::AIO */
		118	struct io_state
		119	{
		120	int errorno;
		121	I32 laststype;
		122	int laststatval;
		123	Stat_t statcache;
		124	};
		125
86	static struct CoroAPI coroapi;	126	static struct CoroAPI coroapi;
87	static AV main_mainstack; / used to differentiate between $main and others */	127	static AV main_mainstack; / used to differentiate between $main and others */
88	static HV coro_state_stash, coro_stash;	128	static HV coro_state_stash, coro_stash;
89	static SV coro_mortal; / will be freed after next transfer */	129	static SV coro_mortal; / will be freed after next transfer */
90		130
		131	static struct coro_cctx *cctx_first;
		132	static int cctx_count, cctx_idle;
		133
91	/* this is a structure representing a c-level coroutine */	134	/* this is a structure representing a c-level coroutine */
92	typedef struct coro_stack {	135	typedef struct coro_cctx {
93	struct coro_stack *next;	136	struct coro_cctx *next;
94		137
95	void idle_sp; / original stacklevel when coroutine was created */	138	/* the stack */
96	void *sptr;	139	void *sptr;
97	long ssize; /* positive == mmap, otherwise malloc */	140	long ssize; /* positive == mmap, otherwise malloc */
98		141
99	/* cpu state */	142	/* cpu state */
		143	void idle_sp; / sp of top-level transfer/schedule/cede call */
		144	JMPENV idle_te; / same as idle_sp, but for top_env, TODO: remove once stable */
		145	JMPENV *top_env;
100	coro_context cctx;	146	coro_context cctx;
101	JMPENV *top_env;
102	} coro_stack;
103		147
104	/* the (fake) coro_stack representing the main program */	148	int inuse;
105	static coro_stack *main_stack;	149
		150	#if USE_VALGRIND
		151	int valgrind_id;
		152	#endif
		153	} coro_cctx;
		154
		155	enum {
		156	CF_RUNNING = 0x0001, /* coroutine is running */
		157	CF_READY = 0x0002, /* coroutine is ready */
		158	CF_NEW = 0x0004, /* has never been switched to */
		159	CF_DESTROYED = 0x0008, /* coroutine data has been freed */
		160	};
106		161
107	/* this is a structure representing a perl-level coroutine */	162	/* this is a structure representing a perl-level coroutine */
108	struct coro {	163	struct coro {
109	/* the c coroutine allocated to this perl coroutine, if any */	164	/* the c coroutine allocated to this perl coroutine, if any */
110	coro_stack *stack;	165	coro_cctx *cctx;
111		166
112	/* data associated with this coroutine (initial args) */	167	/* data associated with this coroutine (initial args) */
113	AV *args;	168	AV *args;
114	int refcnt;	169	int refcnt;
		170	int save; /* CORO_SAVE flags */
		171	int flags; /* CF_ flags */
115		172
116	/* optionally saved, might be zero */	173	/* optionally saved, might be zero */
117	AV *defav;	174	AV defav; / @_ */
118	SV *defsv;	175	SV defsv; / $_ */
119	SV *errsv;	176	SV errsv; / $@ */
		177	SV irssv; / $/ */
		178	SV irssv_sv; / real $/ cache */
120		179
121	/* saved global state not related to stacks */	180	#define VAR(name,type) type name;
122	U8 dowarn;	181	# include "state.h"
123	I32 in_eval;	182	#undef VAR
124
125	/* the stacks and related info (callchain etc..) */
126	PERL_SI *curstackinfo;
127	AV *curstack;
128	AV *mainstack;
129	SV **stack_sp;
130	OP *op;
131	SV **curpad;
132	AV *comppad;
133	CV *compcv;
134	SV **stack_base;
135	SV **stack_max;
136	SV **tmps_stack;
137	I32 tmps_floor;
138	I32 tmps_ix;
139	I32 tmps_max;
140	I32 *markstack;
141	I32 *markstack_ptr;
142	I32 *markstack_max;
143	I32 *scopestack;
144	I32 scopestack_ix;
145	I32 scopestack_max;
146	ANY *savestack;
147	I32 savestack_ix;
148	I32 savestack_max;
149	OP **retstack;
150	I32 retstack_ix;
151	I32 retstack_max;
152	PMOP *curpm;
153	COP *curcop;
154		183
155	/* coro process data */	184	/* coro process data */
156	int prio;	185	int prio;
157	};	186	};
158		187
159	typedef struct coro *Coro__State;	188	typedef struct coro *Coro__State;
160	typedef struct coro *Coro__State_or_hashref;	189	typedef struct coro *Coro__State_or_hashref;
161		190
		191	/ Coro ******************************************************************/
		192
		193	#define PRIO_MAX 3
		194	#define PRIO_HIGH 1
		195	#define PRIO_NORMAL 0
		196	#define PRIO_LOW -1
		197	#define PRIO_IDLE -3
		198	#define PRIO_MIN -4
		199
		200	/* for Coro.pm */
		201	static SV *coro_current;
		202	static AV *coro_ready [PRIO_MAX-PRIO_MIN+1];
		203	static int coro_nready;
		204
		205	/ lowlevel stuff ********************************************************/
		206
162	static AV *	207	static AV *
163	coro_clone_padlist (pTHX_ CV *cv)	208	coro_clone_padlist (CV *cv)
164	{	209	{
165	AV *padlist = CvPADLIST (cv);	210	AV *padlist = CvPADLIST (cv);
166	AV newpadlist, newpad;	211	AV newpadlist, newpad;
167		212
168	newpadlist = newAV ();	213	newpadlist = newAV ();
169	AvREAL_off (newpadlist);	214	AvREAL_off (newpadlist);
170	#if PERL_VERSION < 9	215	#if PERL_VERSION_ATLEAST (5,9,0)
		216	Perl_pad_push (aTHX_ padlist, AvFILLp (padlist) + 1);
		217	#else
171	Perl_pad_push (aTHX_ padlist, AvFILLp (padlist) + 1, 1);	218	Perl_pad_push (aTHX_ padlist, AvFILLp (padlist) + 1, 1);
172	#else
173	Perl_pad_push (aTHX_ padlist, AvFILLp (padlist) + 1);
174	#endif	219	#endif
175	newpad = (AV *)AvARRAY (padlist)[AvFILLp (padlist)];	220	newpad = (AV *)AvARRAY (padlist)[AvFILLp (padlist)];
176	--AvFILLp (padlist);	221	--AvFILLp (padlist);
177		222
178	av_store (newpadlist, 0, SvREFCNT_inc (*av_fetch (padlist, 0, FALSE)));	223	av_store (newpadlist, 0, SvREFCNT_inc (*av_fetch (padlist, 0, FALSE)));
…		…
180		225
181	return newpadlist;	226	return newpadlist;
182	}	227	}
183		228
184	static void	229	static void
185	free_padlist (pTHX_ AV *padlist)	230	free_padlist (AV *padlist)
186	{	231	{
187	/* may be during global destruction */	232	/* may be during global destruction */
188	if (SvREFCNT (padlist))	233	if (SvREFCNT (padlist))
189	{	234	{
190	I32 i = AvFILLp (padlist);	235	I32 i = AvFILLp (padlist);
…		…
211	AV *padlist;	256	AV *padlist;
212	AV av = (AV )mg->mg_obj;	257	AV av = (AV )mg->mg_obj;
213		258
214	/* casting is fun. */	259	/* casting is fun. */
215	while (&PL_sv_undef != (SV )(padlist = (AV )av_pop (av)))	260	while (&PL_sv_undef != (SV )(padlist = (AV )av_pop (av)))
216	free_padlist (aTHX_ padlist);	261	free_padlist (padlist);
217		262
218	SvREFCNT_dec (av);	263	SvREFCNT_dec (av);
219		264
220	return 0;	265	return 0;
221	}	266	}
222		267
223	#define PERL_MAGIC_coro PERL_MAGIC_ext	268	#define PERL_MAGIC_coro PERL_MAGIC_ext
224		269
225	static MGVTBL vtbl_coro = {0, 0, 0, 0, coro_cv_free};	270	static MGVTBL vtbl_coro = {0, 0, 0, 0, coro_cv_free};
226		271
		272	#define CORO_MAGIC(cv) \
		273	SvMAGIC (cv) \
		274	? SvMAGIC (cv)->mg_type == PERL_MAGIC_coro \
		275	? SvMAGIC (cv) \
		276	: mg_find ((SV *)cv, PERL_MAGIC_coro) \
		277	: 0
		278
227	/* the next two functions merely cache the padlists */	279	/* the next two functions merely cache the padlists */
228	static void	280	static void
229	get_padlist (pTHX_ CV *cv)	281	get_padlist (CV *cv)
230	{	282	{
231	MAGIC mg = mg_find ((SV )cv, PERL_MAGIC_coro);	283	MAGIC *mg = CORO_MAGIC (cv);
		284	AV *av;
232		285
233	if (mg && AvFILLp ((AV *)mg->mg_obj) >= 0)	286	if (mg && AvFILLp ((av = (AV *)mg->mg_obj)) >= 0)
234	CvPADLIST (cv) = (AV )av_pop ((AV )mg->mg_obj);	287	CvPADLIST (cv) = (AV *)AvARRAY (av)[AvFILLp (av)--];
235	else	288	else
236	{	289	{
237	#if 0	290	#if PREFER_PERL_FUNCTIONS
238	/* this should work - but it doesn't :( */	291	/* this is probably cleaner, but also slower? */
239	CV *cp = Perl_cv_clone (aTHX_ cv);	292	CV *cp = Perl_cv_clone (cv);
240	CvPADLIST (cv) = CvPADLIST (cp);	293	CvPADLIST (cv) = CvPADLIST (cp);
241	CvPADLIST (cp) = 0;	294	CvPADLIST (cp) = 0;
242	SvREFCNT_dec (cp);	295	SvREFCNT_dec (cp);
243	#else	296	#else
244	CvPADLIST (cv) = coro_clone_padlist (aTHX_ cv);	297	CvPADLIST (cv) = coro_clone_padlist (cv);
245	#endif	298	#endif
246	}	299	}
247	}	300	}
248		301
249	static void	302	static void
250	put_padlist (pTHX_ CV *cv)	303	put_padlist (CV *cv)
251	{	304	{
252	MAGIC mg = mg_find ((SV )cv, PERL_MAGIC_coro);	305	MAGIC *mg = CORO_MAGIC (cv);
		306	AV *av;
253		307
254	if (!mg)	308	if (!mg)
255	{	309	{
256	sv_magic ((SV *)cv, 0, PERL_MAGIC_coro, 0, 0);	310	sv_magic ((SV *)cv, 0, PERL_MAGIC_coro, 0, 0);
257	mg = mg_find ((SV *)cv, PERL_MAGIC_coro);	311	mg = mg_find ((SV *)cv, PERL_MAGIC_coro);
258	mg->mg_virtual = &vtbl_coro;	312	mg->mg_virtual = &vtbl_coro;
259	mg->mg_obj = (SV *)newAV ();	313	mg->mg_obj = (SV *)newAV ();
260	}	314	}
261		315
262	av_push ((AV )mg->mg_obj, (SV )CvPADLIST (cv));	316	av = (AV *)mg->mg_obj;
		317
		318	if (AvFILLp (av) >= AvMAX (av))
		319	av_extend (av, AvMAX (av) + 1);
		320
		321	AvARRAY (av)[++AvFILLp (av)] = (SV *)CvPADLIST (cv);
263	}	322	}
		323
		324	/ load & save, init *****************************************************/
264		325
265	#define SB do {	326	#define SB do {
266	#define SE } while (0)	327	#define SE } while (0)
267		328
268	#define LOAD(state) load_state(aTHX_ (state));
269	#define SAVE(state,flags) save_state(aTHX_ (state),(flags));
270
271	#define REPLACE_SV(sv,val) SB SvREFCNT_dec(sv); (sv) = (val); (val) = 0; SE	329	#define REPLACE_SV(sv,val) SB SvREFCNT_dec (sv); (sv) = (val); (val) = 0; SE
272		330
273	static void	331	static void
274	load_state(pTHX_ Coro__State c)	332	load_perl (Coro__State c)
275	{	333	{
276	PL_dowarn = c->dowarn;	334	#define VAR(name,type) PL_ ## name = c->name;
277	PL_in_eval = c->in_eval;	335	# include "state.h"
278		336	#undef VAR
279	PL_curstackinfo = c->curstackinfo;
280	PL_curstack = c->curstack;
281	PL_mainstack = c->mainstack;
282	PL_stack_sp = c->stack_sp;
283	PL_op = c->op;
284	PL_curpad = c->curpad;
285	PL_comppad = c->comppad;
286	PL_compcv = c->compcv;
287	PL_stack_base = c->stack_base;
288	PL_stack_max = c->stack_max;
289	PL_tmps_stack = c->tmps_stack;
290	PL_tmps_floor = c->tmps_floor;
291	PL_tmps_ix = c->tmps_ix;
292	PL_tmps_max = c->tmps_max;
293	PL_markstack = c->markstack;
294	PL_markstack_ptr = c->markstack_ptr;
295	PL_markstack_max = c->markstack_max;
296	PL_scopestack = c->scopestack;
297	PL_scopestack_ix = c->scopestack_ix;
298	PL_scopestack_max = c->scopestack_max;
299	PL_savestack = c->savestack;
300	PL_savestack_ix = c->savestack_ix;
301	PL_savestack_max = c->savestack_max;
302	#if PERL_VERSION < 9
303	PL_retstack = c->retstack;
304	PL_retstack_ix = c->retstack_ix;
305	PL_retstack_max = c->retstack_max;
306	#endif
307	PL_curpm = c->curpm;
308	PL_curcop = c->curcop;
309		337
310	if (c->defav) REPLACE_SV (GvAV (PL_defgv), c->defav);	338	if (c->defav) REPLACE_SV (GvAV (PL_defgv), c->defav);
311	if (c->defsv) REPLACE_SV (DEFSV , c->defsv);	339	if (c->defsv) REPLACE_SV (DEFSV , c->defsv);
312	if (c->errsv) REPLACE_SV (ERRSV , c->errsv);	340	if (c->errsv) REPLACE_SV (ERRSV , c->errsv);
		341	if (c->irssv)
		342	{
		343	if (c->irssv == PL_rs \|\| sv_eq (PL_rs, c->irssv))
		344	SvREFCNT_dec (c->irssv);
		345	else
		346	{
		347	REPLACE_SV (PL_rs, c->irssv);
		348	if (!c->irssv_sv) c->irssv_sv = get_sv ("/", 0);
		349	sv_setsv (c->irssv_sv, PL_rs);
		350	}
		351	}
313		352
314	{	353	{
315	dSP;	354	dSP;
316	CV *cv;	355	CV *cv;
317		356
318	/* now do the ugly restore mess */	357	/* now do the ugly restore mess */
319	while ((cv = (CV *)POPs))	358	while ((cv = (CV *)POPs))
320	{	359	{
321	AV padlist = (AV )POPs;
322
323	if (padlist)
324	{
325	put_padlist (aTHX_ cv); /* mark this padlist as available */	360	put_padlist (cv); /* mark this padlist as available */
326	CvPADLIST(cv) = padlist;	361	CvDEPTH (cv) = PTR2IV (POPs);
327	}	362	CvPADLIST (cv) = (AV *)POPs;
328
329	++CvDEPTH(cv);
330	}	363	}
331		364
332	PUTBACK;	365	PUTBACK;
333	}	366	}
334	}	367	}
335		368
336	static void	369	static void
337	save_state(pTHX_ Coro__State c, int flags)	370	save_perl (Coro__State c)
338	{	371	{
339	{	372	{
340	dSP;	373	dSP;
341	I32 cxix = cxstack_ix;	374	I32 cxix = cxstack_ix;
342	PERL_CONTEXT *ccstk = cxstack;	375	PERL_CONTEXT *ccstk = cxstack;
…		…
345	/*	378	/*
346	* the worst thing you can imagine happens first - we have to save	379	* the worst thing you can imagine happens first - we have to save
347	* (and reinitialize) all cv's in the whole callchain :(	380	* (and reinitialize) all cv's in the whole callchain :(
348	*/	381	*/
349		382
		383	EXTEND (SP, 3 + 1);
350	PUSHs (Nullsv);	384	PUSHs (Nullsv);
351	/* this loop was inspired by pp_caller */	385	/* this loop was inspired by pp_caller */
352	for (;;)	386	for (;;)
353	{	387	{
354	while (cxix >= 0)	388	while (cxix >= 0)
355	{	389	{
356	PERL_CONTEXT *cx = &ccstk[cxix--];	390	PERL_CONTEXT *cx = &ccstk[cxix--];
357		391
358	if (CxTYPE(cx) == CXt_SUB)	392	if (CxTYPE (cx) == CXt_SUB)
359	{	393	{
360	CV *cv = cx->blk_sub.cv;	394	CV *cv = cx->blk_sub.cv;
		395
361	if (CvDEPTH(cv))	396	if (CvDEPTH (cv))
362	{	397	{
363	EXTEND (SP, CvDEPTH(cv)*2);	398	EXTEND (SP, 3);
364
365	while (--CvDEPTH(cv))
366	{
367	/* this tells the restore code to increment CvDEPTH */
368	PUSHs (Nullsv);
369	PUSHs ((SV *)cv);
370	}
371
372	PUSHs ((SV *)CvPADLIST(cv));	399	PUSHs ((SV *)CvPADLIST (cv));
		400	PUSHs (INT2PTR (SV *, CvDEPTH (cv)));
373	PUSHs ((SV *)cv);	401	PUSHs ((SV *)cv);
374		402
		403	CvDEPTH (cv) = 0;
375	get_padlist (aTHX_ cv);	404	get_padlist (cv);
376	}	405	}
377	}	406	}
378	#ifdef CXt_FORMAT
379	else if (CxTYPE(cx) == CXt_FORMAT)
380	{
381	/* I never used formats, so how should I know how these are implemented? */
382	/* my bold guess is as a simple, plain sub... */
383	croak ("CXt_FORMAT not yet handled. Don't switch coroutines from within formats");
384	}
385	#endif
386	}	407	}
387		408
388	if (top_si->si_type == PERLSI_MAIN)	409	if (top_si->si_type == PERLSI_MAIN)
389	break;	410	break;
390		411
…		…
394	}	415	}
395		416
396	PUTBACK;	417	PUTBACK;
397	}	418	}
398		419
399	c->defav = flags & TRANSFER_SAVE_DEFAV ? (AV *)SvREFCNT_inc (GvAV (PL_defgv)) : 0;	420	c->defav = c->save & CORO_SAVE_DEFAV ? (AV *)SvREFCNT_inc (GvAV (PL_defgv)) : 0;
400	c->defsv = flags & TRANSFER_SAVE_DEFSV ? SvREFCNT_inc (DEFSV) : 0;	421	c->defsv = c->save & CORO_SAVE_DEFSV ? SvREFCNT_inc (DEFSV) : 0;
401	c->errsv = flags & TRANSFER_SAVE_ERRSV ? SvREFCNT_inc (ERRSV) : 0;	422	c->errsv = c->save & CORO_SAVE_ERRSV ? SvREFCNT_inc (ERRSV) : 0;
		423	c->irssv = c->save & CORO_SAVE_IRSSV ? SvREFCNT_inc (PL_rs) : 0;
402		424
403	c->dowarn = PL_dowarn;	425	#define VAR(name,type)c->name = PL_ ## name;
404	c->in_eval = PL_in_eval;	426	# include "state.h"
405		427	#undef VAR
406	c->curstackinfo = PL_curstackinfo;
407	c->curstack = PL_curstack;
408	c->mainstack = PL_mainstack;
409	c->stack_sp = PL_stack_sp;
410	c->op = PL_op;
411	c->curpad = PL_curpad;
412	c->comppad = PL_comppad;
413	c->compcv = PL_compcv;
414	c->stack_base = PL_stack_base;
415	c->stack_max = PL_stack_max;
416	c->tmps_stack = PL_tmps_stack;
417	c->tmps_floor = PL_tmps_floor;
418	c->tmps_ix = PL_tmps_ix;
419	c->tmps_max = PL_tmps_max;
420	c->markstack = PL_markstack;
421	c->markstack_ptr = PL_markstack_ptr;
422	c->markstack_max = PL_markstack_max;
423	c->scopestack = PL_scopestack;
424	c->scopestack_ix = PL_scopestack_ix;
425	c->scopestack_max = PL_scopestack_max;
426	c->savestack = PL_savestack;
427	c->savestack_ix = PL_savestack_ix;
428	c->savestack_max = PL_savestack_max;
429	#if PERL_VERSION < 9
430	c->retstack = PL_retstack;
431	c->retstack_ix = PL_retstack_ix;
432	c->retstack_max = PL_retstack_max;
433	#endif
434	c->curpm = PL_curpm;
435	c->curcop = PL_curcop;
436	}	428	}
437		429
438	/*	430	/*
439	* allocate various perl stacks. This is an exact copy	431	* allocate various perl stacks. This is an exact copy
440	* of perl.c:init_stacks, except that it uses less memory	432	* of perl.c:init_stacks, except that it uses less memory
441	* on the (sometimes correct) assumption that coroutines do	433	* on the (sometimes correct) assumption that coroutines do
442	* not usually need a lot of stackspace.	434	* not usually need a lot of stackspace.
443	*/	435	*/
		436	#if PREFER_PERL_FUNCTIONS
		437	# define coro_init_stacks init_stacks
		438	#else
444	static void	439	static void
445	coro_init_stacks (pTHX)	440	coro_init_stacks ()
446	{	441	{
447	LOCK;
448
449	PL_curstackinfo = new_stackinfo(96, 1024/sizeof(PERL_CONTEXT) - 1);	442	PL_curstackinfo = new_stackinfo(128, 1024/sizeof(PERL_CONTEXT));
450	PL_curstackinfo->si_type = PERLSI_MAIN;	443	PL_curstackinfo->si_type = PERLSI_MAIN;
451	PL_curstack = PL_curstackinfo->si_stack;	444	PL_curstack = PL_curstackinfo->si_stack;
452	PL_mainstack = PL_curstack; /* remember in case we switch stacks */	445	PL_mainstack = PL_curstack; /* remember in case we switch stacks */
453		446
454	PL_stack_base = AvARRAY(PL_curstack);	447	PL_stack_base = AvARRAY(PL_curstack);
455	PL_stack_sp = PL_stack_base;	448	PL_stack_sp = PL_stack_base;
456	PL_stack_max = PL_stack_base + AvMAX(PL_curstack);	449	PL_stack_max = PL_stack_base + AvMAX(PL_curstack);
457		450
458	New(50,PL_tmps_stack,96,SV*);	451	New(50,PL_tmps_stack,128,SV*);
459	PL_tmps_floor = -1;	452	PL_tmps_floor = -1;
460	PL_tmps_ix = -1;	453	PL_tmps_ix = -1;
461	PL_tmps_max = 96;	454	PL_tmps_max = 128;
462		455
463	New(54,PL_markstack,16,I32);	456	New(54,PL_markstack,32,I32);
464	PL_markstack_ptr = PL_markstack;	457	PL_markstack_ptr = PL_markstack;
465	PL_markstack_max = PL_markstack + 16;	458	PL_markstack_max = PL_markstack + 32;
466		459
467	#ifdef SET_MARK_OFFSET	460	#ifdef SET_MARK_OFFSET
468	SET_MARK_OFFSET;	461	SET_MARK_OFFSET;
469	#endif	462	#endif
470		463
471	New(54,PL_scopestack,16,I32);	464	New(54,PL_scopestack,32,I32);
472	PL_scopestack_ix = 0;	465	PL_scopestack_ix = 0;
473	PL_scopestack_max = 16;	466	PL_scopestack_max = 32;
474		467
475	New(54,PL_savestack,96,ANY);	468	New(54,PL_savestack,64,ANY);
476	PL_savestack_ix = 0;	469	PL_savestack_ix = 0;
477	PL_savestack_max = 96;	470	PL_savestack_max = 64;
478		471
479	#if PERL_VERSION < 9	472	#if !PERL_VERSION_ATLEAST (5,9,0)
480	New(54,PL_retstack,8,OP*);	473	New(54,PL_retstack,16,OP*);
481	PL_retstack_ix = 0;	474	PL_retstack_ix = 0;
482	PL_retstack_max = 8;	475	PL_retstack_max = 16;
483	#endif	476	#endif
484
485	UNLOCK;
486	}	477	}
		478	#endif
487		479
488	/*	480	/*
489	* destroy the stacks, the callchain etc...	481	* destroy the stacks, the callchain etc...
490	*/	482	*/
491	static void	483	static void
492	destroy_stacks(pTHX)	484	coro_destroy_stacks ()
493	{	485	{
494	if (!IN_DESTRUCT)	486	if (!IN_DESTRUCT)
495	{	487	{
496	/* is this ugly, I ask? */	488	/* restore all saved variables and stuff */
497	LEAVE_SCOPE (0);	489	LEAVE_SCOPE (0);
		490	assert (PL_tmps_floor == -1);
498		491
499	/* sure it is, but more important: is it correct?? :/ */	492	/* free all temporaries */
500	FREETMPS;	493	FREETMPS;
		494	assert (PL_tmps_ix == -1);
501		495
		496	/* unwind all extra stacks */
502	/POPSTACK_TO (PL_mainstack);//D//use/	497	POPSTACK_TO (PL_mainstack);
		498
		499	/* unwind main stack */
		500	dounwind (-1);
503	}	501	}
504		502
505	while (PL_curstackinfo->si_next)	503	while (PL_curstackinfo->si_next)
506	PL_curstackinfo = PL_curstackinfo->si_next;	504	PL_curstackinfo = PL_curstackinfo->si_next;
507		505
508	while (PL_curstackinfo)	506	while (PL_curstackinfo)
509	{	507	{
510	PERL_SI *p = PL_curstackinfo->si_prev;	508	PERL_SI *p = PL_curstackinfo->si_prev;
511		509
512	{ /D//remove/
513	dSP;
514	SWITCHSTACK (PL_curstack, PL_curstackinfo->si_stack);
515	PUTBACK; /* possibly superfluous */
516	}
517
518	if (!IN_DESTRUCT)	510	if (!IN_DESTRUCT)
519	{
520	dounwind (-1);/D//remove/
521	SvREFCNT_dec (PL_curstackinfo->si_stack);	511	SvREFCNT_dec (PL_curstackinfo->si_stack);
522	}
523		512
524	Safefree (PL_curstackinfo->si_cxstack);	513	Safefree (PL_curstackinfo->si_cxstack);
525	Safefree (PL_curstackinfo);	514	Safefree (PL_curstackinfo);
526	PL_curstackinfo = p;	515	PL_curstackinfo = p;
527	}	516	}
528		517
529	Safefree (PL_tmps_stack);	518	Safefree (PL_tmps_stack);
530	Safefree (PL_markstack);	519	Safefree (PL_markstack);
531	Safefree (PL_scopestack);	520	Safefree (PL_scopestack);
532	Safefree (PL_savestack);	521	Safefree (PL_savestack);
533	#if PERL_VERSION < 9	522	#if !PERL_VERSION_ATLEAST (5,9,0)
534	Safefree (PL_retstack);	523	Safefree (PL_retstack);
535	#endif	524	#endif
536	}	525	}
		526
		527	/ coroutine stack handling **********************************************/
537		528
538	static void	529	static void
539	setup_coro (struct coro *coro)	530	setup_coro (struct coro *coro)
540	{	531	{
541	/*	532	/*
542	* emulate part of the perl startup here.	533	* emulate part of the perl startup here.
543	*/	534	*/
544	dTHX;	535
		536	coro_init_stacks ();
		537
		538	PL_curcop = &PL_compiling;
		539	PL_in_eval = EVAL_NULL;
		540	PL_curpm = 0;
		541	PL_localizing = 0;
		542	PL_dirty = 0;
		543	PL_restartop = 0;
		544
		545	{
		546	dSP;
		547	LOGOP myop;
		548
		549	SvREFCNT_dec (GvAV (PL_defgv));
		550	GvAV (PL_defgv) = coro->args; coro->args = 0;
		551
		552	Zero (&myop, 1, LOGOP);
		553	myop.op_next = Nullop;
		554	myop.op_flags = OPf_WANT_VOID;
		555
		556	PUSHMARK (SP);
		557	XPUSHs ((SV *)get_cv ("Coro::State::_coro_init", FALSE));
		558	PUTBACK;
		559	PL_op = (OP *)&myop;
		560	PL_op = PL_ppaddr[OP_ENTERSUB](aTHX);
		561	SPAGAIN;
		562	}
		563
		564	ENTER; /* necessary e.g. for dounwind */
		565	}
		566
		567	static void
		568	free_coro_mortal ()
		569	{
		570	if (coro_mortal)
		571	{
		572	SvREFCNT_dec (coro_mortal);
		573	coro_mortal = 0;
		574	}
		575	}
		576
		577	/* inject a fake call to Coro::State::_cctx_init into the execution */
		578	static void NOINLINE
		579	prepare_cctx (coro_cctx *cctx)
		580	{
545	dSP;	581	dSP;
546	UNOP myop;	582	LOGOP myop;
547	SV sub_init = (SV )get_cv ("Coro::State::coro_init", FALSE);
548		583
549	coro_init_stacks (aTHX);
550	/PL_curcop = 0;/
551	/PL_in_eval = PL_in_eval;/ /* inherit */
552	SvREFCNT_dec (GvAV (PL_defgv));
553	GvAV (PL_defgv) = coro->args; coro->args = 0;
554
555	SPAGAIN;
556
557	Zero (&myop, 1, UNOP);	584	Zero (&myop, 1, LOGOP);
558	myop.op_next = Nullop;	585	myop.op_next = PL_op;
559	myop.op_flags = OPf_WANT_VOID;	586	myop.op_flags = OPf_WANT_VOID \| OPf_STACKED;
560		587
		588	PUSHMARK (SP);
		589	EXTEND (SP, 2);
		590	PUSHs (sv_2mortal (newSViv (PTR2IV (cctx))));
		591	PUSHs ((SV *)get_cv ("Coro::State::_cctx_init", FALSE));
		592	PUTBACK;
561	PL_op = (OP *)&myop;	593	PL_op = (OP *)&myop;
562
563	PUSHMARK(SP);
564	XPUSHs (sub_init);
565	PUTBACK;
566	PL_op = PL_ppaddr[OP_ENTERSUB](aTHX);	594	PL_op = PL_ppaddr[OP_ENTERSUB](aTHX);
567	SPAGAIN;	595	SPAGAIN;
568
569	ENTER; /* necessary e.g. for dounwind */
570	}
571
572	static void
573	free_coro_mortal ()
574	{
575	if (coro_mortal)
576	{
577	SvREFCNT_dec (coro_mortal);
578	coro_mortal = 0;
579	}
580	}	596	}
581		597
582	static void	598	static void
583	coro_run (void *arg)	599	coro_run (void *arg)
584	{	600	{
		601	/* coro_run is the alternative tail of transfer(), so unlock here. */
		602	UNLOCK;
		603
585	/*	604	/*
586	* this is a _very_ stripped down perl interpreter ;)	605	* this is a _very_ stripped down perl interpreter ;)
587	*/	606	*/
588	dTHX;
589	PL_top_env = &PL_start_env;	607	PL_top_env = &PL_start_env;
590		608
591	UNLOCK;	609	/* inject call to cctx_init */
		610	prepare_cctx ((coro_cctx *)arg);
592		611
593	sv_setiv (get_sv ("Coro::State::cctx_stack", FALSE), PTR2IV ((coro_stack *)arg));
594	sv_setiv (get_sv ("Coro::State::cctx_restartop", FALSE), PTR2IV (PL_op));
595	PL_restartop = CvSTART (get_cv ("Coro::State::cctx_init", FALSE));
596
597	/* somebody will hit me for both perl_run and PL_restart_op */	612	/* somebody will hit me for both perl_run and PL_restartop */
598	perl_run (aTHX_ PERL_GET_CONTEXT);	613	PL_restartop = PL_op;
		614	perl_run (PL_curinterp);
599		615
		616	fputs ("FATAL: C coroutine fell over the edge of the world, aborting. Did you call exit in a coroutine?\n", stderr);
600	abort ();	617	abort ();
601	}	618	}
602		619
603	static coro_stack *	620	static coro_cctx *
604	stack_new ()	621	cctx_new ()
605	{	622	{
606	coro_stack *stack;	623	coro_cctx *cctx;
607		624
		625	++cctx_count;
		626
608	New (0, stack, 1, coro_stack);	627	Newz (0, cctx, 1, coro_cctx);
609		628
610	#if HAVE_MMAP	629	#if HAVE_MMAP
611		630
612	stack->ssize = ((STACKSIZE * sizeof (long) + PAGESIZE - 1) / PAGESIZE + STACKGUARD) * PAGESIZE; /* mmap should do allocate-on-write for us */	631	cctx->ssize = ((STACKSIZE * sizeof (long) + PAGESIZE - 1) / PAGESIZE + STACKGUARD) * PAGESIZE;
		632	/* mmap supposedly does allocate-on-write for us */
613	stack->sptr = mmap (0, stack->ssize, PROT_EXEC\|PROT_READ\|PROT_WRITE, MAP_PRIVATE\|MAP_ANONYMOUS, 0, 0);	633	cctx->sptr = mmap (0, cctx->ssize, PROT_EXEC\|PROT_READ\|PROT_WRITE, MAP_PRIVATE\|MAP_ANONYMOUS, 0, 0);
614		634
615	if (stack->sptr == (void *)-1)	635	if (cctx->sptr == (void *)-1)
616	{	636	{
617	perror ("FATAL: unable to mmap stack for coroutine");	637	perror ("FATAL: unable to mmap stack for coroutine");
618	_exit (EXIT_FAILURE);	638	_exit (EXIT_FAILURE);
619	}	639	}
620		640
		641	# if STACKGUARD
621	mprotect (stack->sptr, STACKGUARD * PAGESIZE, PROT_NONE);	642	mprotect (cctx->sptr, STACKGUARD * PAGESIZE, PROT_NONE);
		643	# endif
622		644
623	#else	645	#else
624		646
625	stack->ssize = STACKSIZE * (long)sizeof (long);	647	cctx->ssize = STACKSIZE * (long)sizeof (long);
626	New (0, stack->sptr, STACKSIZE, long);	648	New (0, cctx->sptr, STACKSIZE, long);
627		649
628	if (!stack->sptr)	650	if (!cctx->sptr)
629	{	651	{
630	perror (stderr, "FATAL: unable to malloc stack for coroutine");	652	perror ("FATAL: unable to malloc stack for coroutine");
631	_exit (EXIT_FAILURE);	653	_exit (EXIT_FAILURE);
632	}	654	}
633		655
634	#endif	656	#endif
635		657
		658	#if USE_VALGRIND
		659	cctx->valgrind_id = VALGRIND_STACK_REGISTER (
		660	STACKGUARD * PAGESIZE + (char *)cctx->sptr,
		661	cctx->ssize + (char *)cctx->sptr
		662	);
		663	#endif
		664
636	coro_create (&stack->cctx, coro_run, (void *)stack, stack->sptr, stack->ssize);	665	coro_create (&cctx->cctx, coro_run, (void *)cctx, cctx->sptr, cctx->ssize);
637		666
638	return stack;	667	return cctx;
639	}	668	}
640		669
641	static void	670	static void
642	stack_free (coro_stack *stack)	671	cctx_destroy (coro_cctx *cctx)
643	{	672	{
644	if (!stack \|\| stack == main_stack)	673	if (!cctx)
645	return;	674	return;
646		675
		676	--cctx_count;
		677
		678	#if USE_VALGRIND
		679	VALGRIND_STACK_DEREGISTER (cctx->valgrind_id);
		680	#endif
		681
647	#if HAVE_MMAP	682	#if HAVE_MMAP
648	munmap (stack->sptr, stack->ssize);	683	munmap (cctx->sptr, cctx->ssize);
649	#else	684	#else
650	Safefree (stack->sptr);	685	Safefree (cctx->sptr);
651	#endif	686	#endif
652		687
653	Safefree (stack);	688	Safefree (cctx);
654	}	689	}
655		690
656	static coro_stack *stack_first;
657
658	static coro_stack *	691	static coro_cctx *
659	stack_get ()	692	cctx_get ()
660	{	693	{
661	coro_stack *stack;	694	coro_cctx *cctx;
662		695
663	if (stack_first)	696	if (cctx_first)
664	{	697	{
665	stack = stack_first;	698	cctx = cctx_first;
666	stack_first = stack->next;	699	cctx_first = cctx->next;
		700	--cctx_idle;
667	}	701	}
668	else	702	else
669	{	703	{
670	stack = stack_new ();	704	cctx = cctx_new ();
671	PL_op = PL_op->op_next;	705	PL_op = PL_op->op_next;
672	}	706	}
673		707
674	return stack;	708	return cctx;
675	}	709	}
676		710
677	static void	711	static void
678	stack_put (coro_stack *stack)	712	cctx_put (coro_cctx *cctx)
679	{	713	{
680	stack->next = stack_first;	714	/* free another cctx if overlimit */
681	stack_first = stack;	715	if (cctx_idle >= MAX_IDLE_CCTX)
		716	{
		717	coro_cctx *first = cctx_first;
		718	cctx_first = first->next;
		719	--cctx_idle;
		720
		721	assert (!first->inuse);
		722	cctx_destroy (first);
		723	}
		724
		725	++cctx_idle;
		726	cctx->next = cctx_first;
		727	cctx_first = cctx;
682	}	728	}
		729
		730	/ coroutine switching ***************************************************/
683		731
684	/* never call directly, always through the coro_state_transfer global variable */	732	/* never call directly, always through the coro_state_transfer global variable */
685	static void	733	static void NOINLINE
686	transfer_impl (pTHX_ struct coro prev, struct coro next, int flags)	734	transfer (struct coro prev, struct coro next)
687	{	735	{
688	dSTACKLEVEL;	736	dSTACKLEVEL;
689		737
690	/* sometimes transfer is only called to set idle_sp */	738	/* sometimes transfer is only called to set idle_sp */
691	if (flags == TRANSFER_SET_STACKLEVEL)	739	if (!next)
		740	{
692	((coro_stack *)prev)->idle_sp = STACKLEVEL;	741	((coro_cctx *)prev)->idle_sp = STACKLEVEL;
		742	assert (((coro_cctx )prev)->idle_te = PL_top_env); / just for the side-effect when asserts are enabled */
		743	}
693	else if (prev != next)	744	else if (prev != next)
694	{	745	{
695	coro_stack *prev__stack;	746	coro_cctx *prev__cctx;
		747
		748	if (prev->flags & CF_NEW)
		749	{
		750	/* create a new empty context */
		751	Newz (0, prev->cctx, 1, coro_cctx);
		752	prev->cctx->inuse = 1;
		753	prev->flags &= ~CF_NEW;
		754	prev->flags \|= CF_RUNNING;
		755	}
		756
		757	/TODO: must not croak here /
		758	if (!prev->flags & CF_RUNNING)
		759	croak ("Coro::State::transfer called with non-running prev Coro::State, but can only transfer from running states");
		760
		761	if (next->flags & CF_RUNNING)
		762	croak ("Coro::State::transfer called with running next Coro::State, but can only transfer to inactive states");
		763
		764	if (next->flags & CF_DESTROYED)
		765	croak ("Coro::State::transfer called with destroyed next Coro::State, but can only transfer to inactive states");
		766
		767	prev->flags &= ~CF_RUNNING;
		768	next->flags \|= CF_RUNNING;
696		769
697	LOCK;	770	LOCK;
698		771
699	if (next->mainstack)	772	if (next->flags & CF_NEW)
700	{	773	{
701	/* coroutine already started */	774	/* need to start coroutine */
702	SAVE (prev, flags);	775	next->flags &= ~CF_NEW;
703	LOAD (next);	776	/* first get rid of the old state */
		777	save_perl (prev);
		778	/* setup coroutine call */
		779	setup_coro (next);
		780	/* need a new stack */
		781	assert (!next->cctx);
704	}	782	}
705	else	783	else
706	{	784	{
707	/* need to start coroutine */	785	/* coroutine already started */
708	/* first get rid of the old state */	786	save_perl (prev);
709	SAVE (prev, -1);	787	load_perl (next);
710	/* setup coroutine call */
711	setup_coro (next);
712	/* need a stack */
713	next->stack = 0;
714	}	788	}
715		789
716	prev__stack = prev->stack;	790	prev__cctx = prev->cctx;
717		791
718	/* possibly "free" the stack */	792	/* possibly "free" the cctx */
719	if (prev__stack->idle_sp == STACKLEVEL)	793	if (prev__cctx->idle_sp == STACKLEVEL)
720	{	794	{
721	stack_put (prev__stack);	795	/* I assume that STACKLEVEL is a stronger indicator than PL_top_env changes */
		796	assert (("ERROR: current top_env must equal previous top_env", PL_top_env == prev__cctx->idle_te));
		797
722	prev->stack = 0;	798	prev->cctx = 0;
		799
		800	cctx_put (prev__cctx);
		801	prev__cctx->inuse = 0;
723	}	802	}
724		803
725	if (!next->stack)	804	if (!next->cctx)
726	next->stack = stack_get ();
727
728	if (prev__stack != next->stack)
729	{	805	{
730	prev__stack->top_env = PL_top_env;	806	next->cctx = cctx_get ();
731	PL_top_env = next->stack->top_env;	807	assert (!next->cctx->inuse);
732	coro_transfer (&prev__stack->cctx, &next->stack->cctx);	808	next->cctx->inuse = 1;
733	}	809	}
734		810
		811	if (prev__cctx != next->cctx)
		812	{
		813	prev__cctx->top_env = PL_top_env;
		814	PL_top_env = next->cctx->top_env;
		815	coro_transfer (&prev__cctx->cctx, &next->cctx->cctx);
		816	}
		817
735	free_coro_mortal ();	818	free_coro_mortal ();
736
737	UNLOCK;	819	UNLOCK;
738	}	820	}
739	}	821	}
740		822
741	/* use this function pointer to call the above function */
742	/* this is done to increase chances of the compiler not inlining the call */
743	/* not static to make it even harder for the compiler (and theoretically impossible in most cases */
744	void (coro_state_transfer)(pTHX_ struct coro prev, struct coro *next, int flags) = transfer_impl;
745
746	struct transfer_args	823	struct transfer_args
747	{	824	{
748	struct coro prev, next;	825	struct coro prev, next;
749	int flags;
750	};	826	};
751		827
752	#define TRANSFER(ta) coro_state_transfer ((ta).prev, (ta).next, (ta).flags)	828	#define TRANSFER(ta) transfer ((ta).prev, (ta).next)
753		829
		830	/ high level stuff ******************************************************/
		831
754	static void	832	static int
755	coro_state_destroy (struct coro *coro)	833	coro_state_destroy (struct coro *coro)
756	{	834	{
757	if (coro->refcnt--)	835	if (coro->flags & CF_DESTROYED)
758	return;	836	return 0;
		837
		838	coro->flags \|= CF_DESTROYED;
		839
		840	if (coro->flags & CF_READY)
		841	{
		842	/* reduce nready, as destroying a ready coro effectively unreadies it */
		843	/* alternative: look through all ready queues and remove it */
		844	LOCK;
		845	--coro_nready;
		846	UNLOCK;
		847	}
		848	else
		849	coro->flags \|= CF_READY; /* make sure it is NOT put into the readyqueue */
759		850
760	if (coro->mainstack && coro->mainstack != main_mainstack)	851	if (coro->mainstack && coro->mainstack != main_mainstack)
761	{	852	{
		853	assert (!(coro->flags & CF_RUNNING));
		854
762	struct coro temp;	855	struct coro temp;
		856	Zero (&temp, 1, struct coro);
		857	temp.save = CORO_SAVE_ALL;
763		858
764	SAVE (aTHX_ (&temp), TRANSFER_SAVE_ALL);	859	if (coro->flags & CF_RUNNING)
765	LOAD (aTHX_ coro);	860	croak ("FATAL: tried to destroy currently running coroutine");
766		861
		862	save_perl (&temp);
		863	load_perl (coro);
		864
767	destroy_stacks (aTHX);	865	coro_destroy_stacks ();
768		866
769	LOAD ((&temp)); /* this will get rid of defsv etc.. */	867	load_perl (&temp); /* this will get rid of defsv etc.. */
770		868
771	coro->mainstack = 0;	869	coro->mainstack = 0;
772	}	870	}
773		871
774	stack_free (coro->stack);	872	cctx_destroy (coro->cctx);
775	SvREFCNT_dec (coro->args);	873	SvREFCNT_dec (coro->args);
776	Safefree (coro);	874
		875	return 1;
777	}	876	}
778		877
779	static int	878	static int
780	coro_state_clear (SV sv, MAGIC mg)	879	coro_state_free (pTHX_ SV sv, MAGIC mg)
781	{	880	{
782	struct coro coro = (struct coro )mg->mg_ptr;	881	struct coro coro = (struct coro )mg->mg_ptr;
783	mg->mg_ptr = 0;	882	mg->mg_ptr = 0;
784		883
		884	if (--coro->refcnt < 0)
		885	{
785	coro_state_destroy (coro);	886	coro_state_destroy (coro);
		887	Safefree (coro);
		888	}
786		889
787	return 0;	890	return 0;
788	}	891	}
789		892
790	static int	893	static int
791	coro_state_dup (MAGIC mg, CLONE_PARAMS params)	894	coro_state_dup (pTHX_ MAGIC mg, CLONE_PARAMS params)
792	{	895	{
793	struct coro coro = (struct coro )mg->mg_ptr;	896	struct coro coro = (struct coro )mg->mg_ptr;
794		897
795	++coro->refcnt;	898	++coro->refcnt;
796		899
797	return 0;	900	return 0;
798	}	901	}
799		902
800	static MGVTBL coro_state_vtbl = { 0, 0, 0, 0, coro_state_clear, 0, coro_state_dup, 0 };	903	static MGVTBL coro_state_vtbl = {
		904	0, 0, 0, 0,
		905	coro_state_free,
		906	0,
		907	#ifdef MGf_DUP
		908	coro_state_dup,
		909	#else
		910	# define MGf_DUP 0
		911	#endif
		912	};
801		913
802	static struct coro *	914	static struct coro *
803	SvSTATE (SV *coro)	915	SvSTATE (SV *coro)
804	{	916	{
805	HV *stash;	917	HV *stash;
…		…
820	assert (mg->mg_type == PERL_MAGIC_ext);	932	assert (mg->mg_type == PERL_MAGIC_ext);
821	return (struct coro *)mg->mg_ptr;	933	return (struct coro *)mg->mg_ptr;
822	}	934	}
823		935
824	static void	936	static void
825	prepare_transfer (pTHX_ struct transfer_args ta, SV prev, SV *next, int flags)	937	prepare_transfer (struct transfer_args ta, SV prev_sv, SV *next_sv)
826	{	938	{
827	ta->prev = SvSTATE (prev);	939	ta->prev = SvSTATE (prev_sv);
828	ta->next = SvSTATE (next);	940	ta->next = SvSTATE (next_sv);
829	ta->flags = flags;
830	}	941	}
831		942
832	static void	943	static void
833	api_transfer (SV prev, SV next, int flags)	944	api_transfer (SV prev_sv, SV next_sv)
834	{	945	{
835	dTHX;
836	struct transfer_args ta;	946	struct transfer_args ta;
837		947
838	prepare_transfer (aTHX_ &ta, prev, next, flags);	948	prepare_transfer (&ta, prev_sv, next_sv);
839	TRANSFER (ta);	949	TRANSFER (ta);
840	}	950	}
841		951
		952	static int
		953	api_save (SV *coro_sv, int new_save)
		954	{
		955	struct coro *coro = SvSTATE (coro_sv);
		956	int old_save = coro->save;
		957
		958	if (new_save >= 0)
		959	coro->save = new_save;
		960
		961	return old_save;
		962	}
		963
842	/ Coro ******************************************************************/	964	/ Coro ******************************************************************/
843		965
844	#define PRIO_MAX 3
845	#define PRIO_HIGH 1
846	#define PRIO_NORMAL 0
847	#define PRIO_LOW -1
848	#define PRIO_IDLE -3
849	#define PRIO_MIN -4
850
851	/* for Coro.pm */
852	static GV coro_current, coro_idle;
853	static AV *coro_ready [PRIO_MAX-PRIO_MIN+1];
854	static int coro_nready;
855
856	static void	966	static void
857	coro_enq (pTHX_ SV *sv)	967	coro_enq (SV *coro_sv)
858	{	968	{
859	int prio;
860
861	if (SvTYPE (sv) != SVt_PVHV)
862	croak ("Coro::ready tried to enqueue something that is not a coroutine");
863
864	prio = SvSTATE (sv)->prio;
865
866	av_push (coro_ready [prio - PRIO_MIN], sv);	969	av_push (coro_ready [SvSTATE (coro_sv)->prio - PRIO_MIN], coro_sv);
867	coro_nready++;
868	}	970	}
869		971
870	static SV *	972	static SV *
871	coro_deq (pTHX_ int min_prio)	973	coro_deq (int min_prio)
872	{	974	{
873	int prio = PRIO_MAX - PRIO_MIN;	975	int prio = PRIO_MAX - PRIO_MIN;
874		976
875	min_prio -= PRIO_MIN;	977	min_prio -= PRIO_MIN;
876	if (min_prio < 0)	978	if (min_prio < 0)
877	min_prio = 0;	979	min_prio = 0;
878		980
879	for (prio = PRIO_MAX - PRIO_MIN + 1; --prio >= min_prio; )	981	for (prio = PRIO_MAX - PRIO_MIN + 1; --prio >= min_prio; )
880	if (AvFILLp (coro_ready [prio]) >= 0)	982	if (AvFILLp (coro_ready [prio]) >= 0)
881	{
882	coro_nready--;
883	return av_shift (coro_ready [prio]);	983	return av_shift (coro_ready [prio]);
884	}
885		984
886	return 0;	985	return 0;
887	}	986	}
888		987
889	static void	988	static int
890	api_ready (SV *coro)	989	api_ready (SV *coro_sv)
891	{	990	{
892	dTHX;	991	struct coro *coro;
893		992
894	if (SvROK (coro))	993	if (SvROK (coro_sv))
895	coro = SvRV (coro);	994	coro_sv = SvRV (coro_sv);
		995
		996	coro = SvSTATE (coro_sv);
		997
		998	if (coro->flags & CF_READY)
		999	return 0;
		1000
		1001	coro->flags \|= CF_READY;
896		1002
897	LOCK;	1003	LOCK;
898	coro_enq (aTHX_ SvREFCNT_inc (coro));	1004	coro_enq (SvREFCNT_inc (coro_sv));
		1005	++coro_nready;
899	UNLOCK;	1006	UNLOCK;
900	}
901		1007
		1008	return 1;
		1009	}
		1010
902	static void	1011	static int
		1012	api_is_ready (SV *coro_sv)
		1013	{
		1014	return !!(SvSTATE (coro_sv)->flags & CF_READY);
		1015	}
		1016
		1017	static void
903	prepare_schedule (aTHX_ struct transfer_args *ta)	1018	prepare_schedule (struct transfer_args *ta)
904	{	1019	{
905	SV current, prev, *next;	1020	SV prev_sv, next_sv;
		1021
		1022	for (;;)
		1023	{
		1024	LOCK;
		1025	next_sv = coro_deq (PRIO_MIN);
		1026	UNLOCK;
		1027
		1028	/* nothing to schedule: call the idle handler */
		1029	if (!next_sv)
		1030	{
		1031	dSP;
		1032
		1033	ENTER;
		1034	SAVETMPS;
		1035
		1036	PUSHMARK (SP);
		1037	PUTBACK;
		1038	call_sv (get_sv ("Coro::idle", FALSE), G_DISCARD);
		1039
		1040	FREETMPS;
		1041	LEAVE;
		1042	continue;
		1043	}
		1044
		1045	ta->next = SvSTATE (next_sv);
		1046
		1047	/* cannot transfer to destroyed coros, skip and look for next */
		1048	if (ta->next->flags & CF_DESTROYED)
		1049	{
		1050	SvREFCNT_dec (next_sv);
		1051	/* coro_nready is already taken care of by destroy */
		1052	continue;
		1053	}
		1054
		1055	LOCK;
		1056	--coro_nready;
		1057	UNLOCK;
		1058	break;
		1059	}
		1060
		1061	/* free this only after the transfer */
		1062	prev_sv = SvRV (coro_current);
		1063	SvRV_set (coro_current, next_sv);
		1064	ta->prev = SvSTATE (prev_sv);
		1065
		1066	assert (ta->next->flags & CF_READY);
		1067	ta->next->flags &= ~CF_READY;
906		1068
907	LOCK;	1069	LOCK;
908
909	current = GvSV (coro_current);
910
911	for (;;)
912	{
913	LOCK;
914
915	next = coro_deq (aTHX_ PRIO_MIN);
916
917	if (next)
918	break;
919
920	UNLOCK;
921
922	{
923	dSP;
924
925	ENTER;
926	SAVETMPS;
927
928	PUSHMARK (SP);
929	PUTBACK;
930	call_sv (GvSV (coro_idle), G_DISCARD);
931
932	FREETMPS;
933	LEAVE;
934	}
935	}
936
937	prev = SvRV (current);
938	SvRV (current) = next;
939
940	/* free this only after the transfer */
941	free_coro_mortal ();	1070	free_coro_mortal ();
942	coro_mortal = prev;	1071	coro_mortal = prev_sv;
943
944	ta->prev = SvSTATE (prev);
945	ta->next = SvSTATE (next);
946	ta->flags = TRANSFER_SAVE_ALL;
947
948	UNLOCK;	1072	UNLOCK;
949	}	1073	}
950		1074
951	static void	1075	static void
952	prepare_cede (aTHX_ struct transfer_args *ta)	1076	prepare_cede (struct transfer_args *ta)
953	{	1077	{
954	LOCK;	1078	api_ready (coro_current);
955	coro_enq (aTHX_ SvREFCNT_inc (SvRV (GvSV (coro_current))));
956	UNLOCK;
957
958	prepare_schedule (ta);	1079	prepare_schedule (ta);
959	}	1080	}
960		1081
		1082	static int
		1083	prepare_cede_notself (struct transfer_args *ta)
		1084	{
		1085	if (coro_nready)
		1086	{
		1087	SV *prev = SvRV (coro_current);
		1088	prepare_schedule (ta);
		1089	api_ready (prev);
		1090	return 1;
		1091	}
		1092	else
		1093	return 0;
		1094	}
		1095
961	static void	1096	static void
962	api_schedule (void)	1097	api_schedule (void)
963	{	1098	{
964	dTHX;
965	struct transfer_args ta;	1099	struct transfer_args ta;
966		1100
967	prepare_schedule (&ta);	1101	prepare_schedule (&ta);
968	TRANSFER (ta);	1102	TRANSFER (ta);
969	}	1103	}
970		1104
971	static void	1105	static int
972	api_cede (void)	1106	api_cede (void)
973	{	1107	{
974	dTHX;
975	struct transfer_args ta;	1108	struct transfer_args ta;
976		1109
977	prepare_cede (&ta);	1110	prepare_cede (&ta);
		1111
		1112	if (ta.prev != ta.next)
		1113	{
978	TRANSFER (ta);	1114	TRANSFER (ta);
		1115	return 1;
		1116	}
		1117	else
		1118	return 0;
		1119	}
		1120
		1121	static int
		1122	api_cede_notself (void)
		1123	{
		1124	struct transfer_args ta;
		1125
		1126	if (prepare_cede_notself (&ta))
		1127	{
		1128	TRANSFER (ta);
		1129	return 1;
		1130	}
		1131	else
		1132	return 0;
979	}	1133	}
980		1134
981	MODULE = Coro::State PACKAGE = Coro::State	1135	MODULE = Coro::State PACKAGE = Coro::State
982		1136
983	PROTOTYPES: DISABLE	1137	PROTOTYPES: DISABLE
…		…
989	#endif	1143	#endif
990	BOOT_PAGESIZE;	1144	BOOT_PAGESIZE;
991		1145
992	coro_state_stash = gv_stashpv ("Coro::State", TRUE);	1146	coro_state_stash = gv_stashpv ("Coro::State", TRUE);
993		1147
994	newCONSTSUB (coro_state_stash, "SAVE_DEFAV", newSViv (TRANSFER_SAVE_DEFAV));	1148	newCONSTSUB (coro_state_stash, "SAVE_DEFAV", newSViv (CORO_SAVE_DEFAV));
995	newCONSTSUB (coro_state_stash, "SAVE_DEFSV", newSViv (TRANSFER_SAVE_DEFSV));	1149	newCONSTSUB (coro_state_stash, "SAVE_DEFSV", newSViv (CORO_SAVE_DEFSV));
996	newCONSTSUB (coro_state_stash, "SAVE_ERRSV", newSViv (TRANSFER_SAVE_ERRSV));	1150	newCONSTSUB (coro_state_stash, "SAVE_ERRSV", newSViv (CORO_SAVE_ERRSV));
		1151	newCONSTSUB (coro_state_stash, "SAVE_IRSSV", newSViv (CORO_SAVE_IRSSV));
		1152	newCONSTSUB (coro_state_stash, "SAVE_ALL", newSViv (CORO_SAVE_ALL));
997		1153
998	main_mainstack = PL_mainstack;	1154	main_mainstack = PL_mainstack;
999		1155
1000	coroapi.ver = CORO_API_VERSION;	1156	coroapi.ver = CORO_API_VERSION;
1001	coroapi.transfer = api_transfer;	1157	coroapi.transfer = api_transfer;
1002
1003	Newz (0, main_stack, 1, coro_stack);
1004	main_stack->idle_sp = (void *)-1;
1005		1158
1006	assert (("PRIO_NORMAL must be 0", !PRIO_NORMAL));	1159	assert (("PRIO_NORMAL must be 0", !PRIO_NORMAL));
1007	}	1160	}
1008		1161
1009	SV *	1162	SV *
…		…
1014	HV *hv;	1167	HV *hv;
1015	int i;	1168	int i;
1016		1169
1017	Newz (0, coro, 1, struct coro);	1170	Newz (0, coro, 1, struct coro);
1018	coro->args = newAV ();	1171	coro->args = newAV ();
		1172	coro->save = CORO_SAVE_ALL;
		1173	coro->flags = CF_NEW;
1019		1174
1020	hv = newHV ();	1175	hv = newHV ();
1021	sv_magicext ((SV )hv, 0, PERL_MAGIC_ext, &coro_state_vtbl, (char )coro, 0)->mg_flags \|= MGf_DUP;	1176	sv_magicext ((SV )hv, 0, PERL_MAGIC_ext, &coro_state_vtbl, (char )coro, 0)->mg_flags \|= MGf_DUP;
1022	RETVAL = sv_bless (newRV_noinc ((SV *)hv), gv_stashpv (klass, 1));	1177	RETVAL = sv_bless (newRV_noinc ((SV *)hv), gv_stashpv (klass, 1));
1023		1178
1024	for (i = 1; i < items; i++)	1179	for (i = 1; i < items; i++)
1025	av_push (coro->args, newSVsv (ST (i)));	1180	av_push (coro->args, newSVsv (ST (i)));
1026
1027	coro->stack = main_stack;
1028	/coro->mainstack = 0; //actual work is done inside transfer /
1029	/coro->stack = 0;/
1030	}	1181	}
1031	OUTPUT:	1182	OUTPUT:
1032	RETVAL	1183	RETVAL
1033		1184
		1185	int
		1186	save (SV *coro, int new_save = -1)
		1187	CODE:
		1188	RETVAL = api_save (coro, new_save);
		1189	OUTPUT:
		1190	RETVAL
		1191
1034	void	1192	void
1035	transfer (...)	1193	_set_stacklevel (...)
1036	ALIAS:	1194	ALIAS:
1037	Coro::schedule = 1	1195	Coro::State::transfer = 1
1038	Coro::cede = 2	1196	Coro::schedule = 2
1039	_set_stacklevel = 3	1197	Coro::cede = 3
		1198	Coro::cede_notself = 4
1040	CODE:	1199	CODE:
1041	{	1200	{
1042	struct transfer_args ta;	1201	struct transfer_args ta;
1043		1202
1044	switch (ix)	1203	switch (ix)
1045	{	1204	{
1046	case 0:	1205	case 0:
1047	if (items != 3)	1206	ta.prev = (struct coro )INT2PTR (coro_cctx , SvIV (ST (0)));
1048	croak ("Coro::State::transfer(prev,next,flags) expects three arguments, not %d", items);	1207	ta.next = 0;
1049
1050	prepare_transfer (&ta, ST (0), ST (1), SvIV (ST (2)));
1051	break;	1208	break;
1052		1209
1053	case 1:	1210	case 1:
		1211	if (items != 2)
		1212	croak ("Coro::State::transfer (prev,next) expects two arguments, not %d", items);
		1213
		1214	prepare_transfer (&ta, ST (0), ST (1));
		1215	break;
		1216
		1217	case 2:
1054	prepare_schedule (&ta);	1218	prepare_schedule (&ta);
1055	break;	1219	break;
1056		1220
1057	case 2:	1221	case 3:
1058	prepare_cede (&ta);	1222	prepare_cede (&ta);
1059	break;	1223	break;
1060		1224
1061	case 3:	1225	case 4:
1062	ta.prev = (struct coro )INT2PTR (coro_stack , SvIV (ST (0)));	1226	if (!prepare_cede_notself (&ta))
1063	ta.next = 0;	1227	XSRETURN_EMPTY;
1064	ta.flags = TRANSFER_SET_STACKLEVEL;	1228
1065	break;	1229	break;
1066	}	1230	}
1067		1231
		1232	BARRIER;
1068	TRANSFER (ta);	1233	TRANSFER (ta);
1069	}
1070		1234
1071	void	1235	if (GIMME_V != G_VOID && ta.next != ta.prev)
1072	_clone_state_from (SV dst, SV src)	1236	XSRETURN_YES;
		1237	}
		1238
		1239	bool
		1240	_destroy (SV *coro_sv)
1073	CODE:	1241	CODE:
1074	{	1242	RETVAL = coro_state_destroy (SvSTATE (coro_sv));
1075	struct coro *coro_src = SvSTATE (src);	1243	OUTPUT:
1076		1244	RETVAL
1077	sv_unmagic (SvRV (dst), PERL_MAGIC_ext);
1078
1079	++coro_src->refcnt;
1080	sv_magicext (SvRV (dst), 0, PERL_MAGIC_ext, &coro_state_vtbl, (char *)coro_src, 0)->mg_flags \|= MGf_DUP;
1081	}
1082
1083	void
1084	_nonlocal_goto (IV nextop)
1085	CODE:
1086	/* uuh, somebody will kill me again for this */
1087	PL_op->op_next = INT2PTR (OP *, nextop);
1088		1245
1089	void	1246	void
1090	_exit (code)	1247	_exit (code)
1091	int code	1248	int code
1092	PROTOTYPE: $	1249	PROTOTYPE: $
1093	CODE:	1250	CODE:
1094	_exit (code);	1251	_exit (code);
1095		1252
1096	MODULE = Coro::State PACKAGE = Coro::Cont	1253	int
		1254	cctx_count ()
		1255	CODE:
		1256	RETVAL = cctx_count;
		1257	OUTPUT:
		1258	RETVAL
1097		1259
1098	void	1260	int
1099	yield (...)	1261	cctx_idle ()
1100	PROTOTYPE: @	1262	CODE:
1101	CODE:	1263	RETVAL = cctx_idle;
1102	{	1264	OUTPUT:
1103	SV *yieldstack;	1265	RETVAL
1104	SV *sv;
1105	AV *defav = GvAV (PL_defgv);
1106	struct coro prev, next;
1107
1108	yieldstack = *hv_fetch (
1109	(HV *)SvRV (GvSV (coro_current)),
1110	"yieldstack", sizeof ("yieldstack") - 1,
1111	0
1112	);
1113
1114	/* set up @_ -- ugly */
1115	av_clear (defav);
1116	av_fill (defav, items - 1);
1117	while (items--)
1118	av_store (defav, items, SvREFCNT_inc (ST(items)));
1119
1120	sv = av_pop ((AV *)SvRV (yieldstack));
1121	prev = SvSTATE (av_fetch ((AV )SvRV (sv), 0, 0));
1122	next = SvSTATE (av_fetch ((AV )SvRV (sv), 1, 0));
1123	SvREFCNT_dec (sv);
1124
1125	coro_state_transfer (aTHX_ prev, next, 0);
1126	}
1127		1266
1128	MODULE = Coro::State PACKAGE = Coro	1267	MODULE = Coro::State PACKAGE = Coro
1129		1268
1130	BOOT:	1269	BOOT:
1131	{	1270	{
…		…
1138	newCONSTSUB (coro_stash, "PRIO_NORMAL", newSViv (PRIO_NORMAL));	1277	newCONSTSUB (coro_stash, "PRIO_NORMAL", newSViv (PRIO_NORMAL));
1139	newCONSTSUB (coro_stash, "PRIO_LOW", newSViv (PRIO_LOW));	1278	newCONSTSUB (coro_stash, "PRIO_LOW", newSViv (PRIO_LOW));
1140	newCONSTSUB (coro_stash, "PRIO_IDLE", newSViv (PRIO_IDLE));	1279	newCONSTSUB (coro_stash, "PRIO_IDLE", newSViv (PRIO_IDLE));
1141	newCONSTSUB (coro_stash, "PRIO_MIN", newSViv (PRIO_MIN));	1280	newCONSTSUB (coro_stash, "PRIO_MIN", newSViv (PRIO_MIN));
1142		1281
1143	coro_current = gv_fetchpv ("Coro::current", TRUE, SVt_PV);	1282	coro_current = get_sv ("Coro::current", FALSE);
1144	coro_idle = gv_fetchpv ("Coro::idle" , TRUE, SVt_PV);	1283	SvREADONLY_on (coro_current);
1145		1284
1146	for (i = PRIO_MAX - PRIO_MIN + 1; i--; )	1285	for (i = PRIO_MAX - PRIO_MIN + 1; i--; )
1147	coro_ready[i] = newAV ();	1286	coro_ready[i] = newAV ();
1148		1287
1149	{	1288	{
1150	SV *sv = perl_get_sv("Coro::API", 1);	1289	SV *sv = perl_get_sv("Coro::API", 1);
1151		1290
1152	coroapi.schedule = api_schedule;	1291	coroapi.schedule = api_schedule;
		1292	coroapi.save = api_save;
1153	coroapi.cede = api_cede;	1293	coroapi.cede = api_cede;
		1294	coroapi.cede_notself = api_cede_notself;
1154	coroapi.ready = api_ready;	1295	coroapi.ready = api_ready;
		1296	coroapi.is_ready = api_is_ready;
1155	coroapi.nready = &coro_nready;	1297	coroapi.nready = &coro_nready;
1156	coroapi.current = coro_current;	1298	coroapi.current = coro_current;
1157		1299
1158	GCoroAPI = &coroapi;	1300	GCoroAPI = &coroapi;
1159	sv_setiv (sv, (IV)&coroapi);	1301	sv_setiv (sv, (IV)&coroapi);
1160	SvREADONLY_on (sv);	1302	SvREADONLY_on (sv);
1161	}	1303	}
1162	}	1304	}
		1305
		1306	void
		1307	_set_current (SV *current)
		1308	PROTOTYPE: $
		1309	CODE:
		1310	SvREFCNT_dec (SvRV (coro_current));
		1311	SvRV_set (coro_current, SvREFCNT_inc (SvRV (current)));
1163		1312
1164	int	1313	int
1165	prio (Coro::State coro, int newprio = 0)	1314	prio (Coro::State coro, int newprio = 0)
1166	ALIAS:	1315	ALIAS:
1167	nice = 1	1316	nice = 1
…		…
1170	RETVAL = coro->prio;	1319	RETVAL = coro->prio;
1171		1320
1172	if (items > 1)	1321	if (items > 1)
1173	{	1322	{
1174	if (ix)	1323	if (ix)
1175	newprio += coro->prio;	1324	newprio = coro->prio - newprio;
1176		1325
1177	if (newprio < PRIO_MIN) newprio = PRIO_MIN;	1326	if (newprio < PRIO_MIN) newprio = PRIO_MIN;
1178	if (newprio > PRIO_MAX) newprio = PRIO_MAX;	1327	if (newprio > PRIO_MAX) newprio = PRIO_MAX;
1179		1328
1180	coro->prio = newprio;	1329	coro->prio = newprio;
1181	}	1330	}
1182	}	1331	}
		1332	OUTPUT:
		1333	RETVAL
1183		1334
1184	void	1335	SV *
1185	ready (SV *self)	1336	ready (SV *self)
1186	PROTOTYPE: $	1337	PROTOTYPE: $
1187	CODE:	1338	CODE:
1188	api_ready (self);	1339	RETVAL = boolSV (api_ready (self));
		1340	OUTPUT:
		1341	RETVAL
		1342
		1343	SV *
		1344	is_ready (SV *self)
		1345	PROTOTYPE: $
		1346	CODE:
		1347	RETVAL = boolSV (api_is_ready (self));
		1348	OUTPUT:
		1349	RETVAL
1189		1350
1190	int	1351	int
1191	nready (...)	1352	nready (...)
1192	PROTOTYPE:	1353	PROTOTYPE:
1193	CODE:	1354	CODE:
…		…
1199		1360
1200	SV *	1361	SV *
1201	_get_state ()	1362	_get_state ()
1202	CODE:	1363	CODE:
1203	{	1364	{
1204	struct {	1365	struct io_state *data;
1205	int errorno;
1206	int laststype;
1207	int laststatval;
1208	Stat_t statcache;
1209	} data;
1210		1366
		1367	RETVAL = newSV (sizeof (struct io_state));
		1368	data = (struct io_state *)SvPVX (RETVAL);
		1369	SvCUR_set (RETVAL, sizeof (struct io_state));
		1370	SvPOK_only (RETVAL);
		1371
1211	data.errorno = errno;	1372	data->errorno = errno;
1212	data.laststype = PL_laststype;	1373	data->laststype = PL_laststype;
1213	data.laststatval = PL_laststatval;	1374	data->laststatval = PL_laststatval;
1214	data.statcache = PL_statcache;	1375	data->statcache = PL_statcache;
1215
1216	RETVAL = newSVpvn ((char *)&data, sizeof data);
1217	}	1376	}
1218	OUTPUT:	1377	OUTPUT:
1219	RETVAL	1378	RETVAL
1220		1379
1221	void	1380	void
1222	_set_state (char *data_)	1381	_set_state (char *data_)
1223	PROTOTYPE: $	1382	PROTOTYPE: $
1224	CODE:	1383	CODE:
1225	{	1384	{
1226	struct {	1385	struct io_state data = (void )data_;
1227	int errorno;
1228	int laststype;
1229	int laststatval;
1230	Stat_t statcache;
1231	} data = (void )data_;
1232		1386
1233	errno = data->errorno;	1387	errno = data->errorno;
1234	PL_laststype = data->laststype;	1388	PL_laststype = data->laststype;
1235	PL_laststatval = data->laststatval;	1389	PL_laststatval = data->laststatval;
1236	PL_statcache = data->statcache;	1390	PL_statcache = data->statcache;
1237	}	1391	}
		1392

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Comparing Coro/Coro/State.xs (file contents): Revision 1.92 by root, Sun Nov 26 02:16:19 2006 UTC vs. Revision 1.137 by root, Sun Jan 14 20:47:53 2007 UTC

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Comparing Coro/Coro/State.xs (file contents):
Revision 1.92 by root, Sun Nov 26 02:16:19 2006 UTC vs.
Revision 1.137 by root, Sun Jan 14 20:47:53 2007 UTC