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

Comparing Coro/Coro/State.xs (file contents):
Revision 1.93 by root, Sun Nov 26 03:22:50 2006 UTC vs.
Revision 1.142 by root, Tue Feb 13 19:21:29 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	# define REGISTER_STACK(cctx,start,end) (cctx)->valgrind_id = VALGRIND_STACK_REGISTER ((start), (end))
		39	#else
		40	# define REGISTER_STACK(cctx,start,end)
		41	#endif
		42
		43	/* the maximum number of idle cctx that will be pooled */
		44	#define MAX_IDLE_CCTX 8
		45
		46	#define PERL_VERSION_ATLEAST(a,b,c) \
		47	(PERL_REVISION > (a) \
		48	\|\| (PERL_REVISION == (a) \
		49	&& (PERL_VERSION > (b) \
		50	\|\| (PERL_VERSION == (b) && PERLSUBVERSION >= (c)))))
		51
		52	#if !PERL_VERSION_ATLEAST (5,6,0)
12	# ifndef PL_ppaddr	53	# ifndef PL_ppaddr
13	# define PL_ppaddr ppaddr	54	# define PL_ppaddr ppaddr
14	# endif	55	# endif
15	# ifndef call_sv	56	# ifndef call_sv
16	# define call_sv perl_call_sv	57	# define call_sv perl_call_sv
27	# ifndef IS_PADCONST	68	# ifndef IS_PADCONST
28	# define IS_PADCONST(v) 0	69	# define IS_PADCONST(v) 0
29	# endif	70	# endif
30	#endif	71	#endif
31		72
32	#include <stdio.h>	73	/* 5.8.7 */
33	#include <errno.h>	74	#ifndef SvRV_set
		75	# define SvRV_set(s,v) SvRV(s) = (v)
		76	#endif
34		77
35	#if !__i386 && !__x86_64 && !__powerpc && !__m68k && !__alpha && !__mips && !__sparc64	78	#if !__i386 && !__x86_64 && !__powerpc && !__m68k && !__alpha && !__mips && !__sparc64
36	# undef STACKGUARD	79	# undef STACKGUARD
37	#endif	80	#endif
38		81
39	#ifndef STACKGUARD	82	#ifndef STACKGUARD
40	# define STACKGUARD 0	83	# define STACKGUARD 0
41	#endif	84	#endif
42		85
43	#ifdef HAVE_MMAP	86	/* prefer perl internal functions over our own? */
44	# include <unistd.h>	87	#ifndef PREFER_PERL_FUNCTIONS
45	# include <sys/mman.h>	88	# 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	89	#endif
62		90
63	/* The next macro should declare a variable stacklevel that contains and approximation	91	/* 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	92	* to the current C stack pointer. Its property is that it changes with each call
65	* and should be unique. */	93	* and should be unique. */
66	#define dSTACKLEVEL int stacklevel	94	#define dSTACKLEVEL int stacklevel
67	#define STACKLEVEL ((void *)&stacklevel)	95	#define STACKLEVEL ((void *)&stacklevel)
68		96
69	#define IN_DESTRUCT (PL_main_cv == Nullcv)	97	#define IN_DESTRUCT (PL_main_cv == Nullcv)
70		98
71	#define labs(l) ((l) >= 0 ? (l) : -(l))	99	#if __GNUC__ >= 3
		100	# define attribute(x) __attribute__(x)
		101	# define BARRIER __asm__ __volatile__ ("" : : : "memory")
		102	#else
		103	# define attribute(x)
		104	# define BARRIER
		105	#endif
		106
		107	#define NOINLINE attribute ((noinline))
72		108
73	#include "CoroAPI.h"	109	#include "CoroAPI.h"
74
75	#define TRANSFER_SET_STACKLEVEL 0x8bfbfbfb /* magic cookie */
76		110
77	#ifdef USE_ITHREADS	111	#ifdef USE_ITHREADS
78	static perl_mutex coro_mutex;	112	static perl_mutex coro_mutex;
79	# define LOCK do { MUTEX_LOCK (&coro_mutex); } while (0)	113	# define LOCK do { MUTEX_LOCK (&coro_mutex); } while (0)
80	# define UNLOCK do { MUTEX_UNLOCK (&coro_mutex); } while (0)	114	# define UNLOCK do { MUTEX_UNLOCK (&coro_mutex); } while (0)
81	#else	115	#else
82	# define LOCK (void)0	116	# define LOCK (void)0
83	# define UNLOCK (void)0	117	# define UNLOCK (void)0
84	#endif	118	#endif
85		119
		120	/* helper storage struct for Coro::AIO */
		121	struct io_state
		122	{
		123	int errorno;
		124	I32 laststype;
		125	int laststatval;
		126	Stat_t statcache;
		127	};
		128
86	static struct CoroAPI coroapi;	129	static struct CoroAPI coroapi;
87	static AV main_mainstack; / used to differentiate between $main and others */	130	static AV main_mainstack; / used to differentiate between $main and others */
88	static HV coro_state_stash, coro_stash;	131	static HV coro_state_stash, coro_stash;
89	static SV coro_mortal; / will be freed after next transfer */	132	static SV coro_mortal; / will be freed after next transfer */
90		133
		134	static struct coro_cctx *cctx_first;
		135	static int cctx_count, cctx_idle;
		136
91	/* this is a structure representing a c-level coroutine */	137	/* this is a structure representing a c-level coroutine */
92	typedef struct coro_stack {	138	typedef struct coro_cctx {
93	struct coro_stack *next;	139	struct coro_cctx *next;
94		140
95	/* the stack */	141	/* the stack */
96	void *sptr;	142	void *sptr;
97	long ssize; /* positive == mmap, otherwise malloc */	143	ssize_t ssize; /* positive == mmap, otherwise malloc */
98		144
99	/* cpu state */	145	/* cpu state */
100	void idle_sp; / original stacklevel when coroutine was created */	146	void idle_sp; / sp of top-level transfer/schedule/cede call */
		147	JMPENV idle_te; / same as idle_sp, but for top_env, TODO: remove once stable */
101	JMPENV *top_env;	148	JMPENV *top_env;
102	coro_context cctx;	149	coro_context cctx;
103	} coro_stack;
104		150
105	/* the (fake) coro_stack representing the main program */	151	int inuse;
106	static coro_stack *main_stack;	152
		153	#if USE_VALGRIND
		154	int valgrind_id;
		155	#endif
		156	} coro_cctx;
		157
		158	enum {
		159	CF_RUNNING = 0x0001, /* coroutine is running */
		160	CF_READY = 0x0002, /* coroutine is ready */
		161	CF_NEW = 0x0004, /* has never been switched to */
		162	CF_DESTROYED = 0x0008, /* coroutine data has been freed */
		163	};
107		164
108	/* this is a structure representing a perl-level coroutine */	165	/* this is a structure representing a perl-level coroutine */
109	struct coro {	166	struct coro {
110	/* the c coroutine allocated to this perl coroutine, if any */	167	/* the c coroutine allocated to this perl coroutine, if any */
111	coro_stack *stack;	168	coro_cctx *cctx;
112		169
113	/* data associated with this coroutine (initial args) */	170	/* data associated with this coroutine (initial args) */
114	AV *args;	171	AV *args;
115	int refcnt;	172	int refcnt;
		173	int save; /* CORO_SAVE flags */
		174	int flags; /* CF_ flags */
116		175
117	/* optionally saved, might be zero */	176	/* optionally saved, might be zero */
118	AV *defav;	177	AV defav; / @_ */
119	SV *defsv;	178	SV defsv; / $_ */
120	SV *errsv;	179	SV errsv; / $@ */
		180	SV irssv; / $/ */
		181	SV irssv_sv; / real $/ cache */
121		182
122	/* saved global state not related to stacks */	183	#define VAR(name,type) type name;
123	U8 dowarn;	184	# include "state.h"
124	I32 in_eval;	185	#undef VAR
125
126	/* the stacks and related info (callchain etc..) */
127	PERL_SI *curstackinfo;
128	AV *curstack;
129	AV *mainstack;
130	SV **stack_sp;
131	OP *op;
132	SV **curpad;
133	AV *comppad;
134	CV *compcv;
135	SV **stack_base;
136	SV **stack_max;
137	SV **tmps_stack;
138	I32 tmps_floor;
139	I32 tmps_ix;
140	I32 tmps_max;
141	I32 *markstack;
142	I32 *markstack_ptr;
143	I32 *markstack_max;
144	I32 *scopestack;
145	I32 scopestack_ix;
146	I32 scopestack_max;
147	ANY *savestack;
148	I32 savestack_ix;
149	I32 savestack_max;
150	OP **retstack;
151	I32 retstack_ix;
152	I32 retstack_max;
153	PMOP *curpm;
154	COP *curcop;
155		186
156	/* coro process data */	187	/* coro process data */
157	int prio;	188	int prio;
158	};	189	};
159		190
160	typedef struct coro *Coro__State;	191	typedef struct coro *Coro__State;
161	typedef struct coro *Coro__State_or_hashref;	192	typedef struct coro *Coro__State_or_hashref;
162		193
		194	/ Coro ******************************************************************/
		195
		196	#define PRIO_MAX 3
		197	#define PRIO_HIGH 1
		198	#define PRIO_NORMAL 0
		199	#define PRIO_LOW -1
		200	#define PRIO_IDLE -3
		201	#define PRIO_MIN -4
		202
		203	/* for Coro.pm */
		204	static SV *coro_current;
		205	static AV *coro_ready [PRIO_MAX-PRIO_MIN+1];
		206	static int coro_nready;
		207
		208	/ lowlevel stuff ********************************************************/
		209
163	static AV *	210	static AV *
164	coro_clone_padlist (pTHX_ CV *cv)	211	coro_clone_padlist (CV *cv)
165	{	212	{
166	AV *padlist = CvPADLIST (cv);	213	AV *padlist = CvPADLIST (cv);
167	AV newpadlist, newpad;	214	AV newpadlist, newpad;
168		215
169	newpadlist = newAV ();	216	newpadlist = newAV ();
170	AvREAL_off (newpadlist);	217	AvREAL_off (newpadlist);
171	#if PERL_VERSION < 9	218	#if PERL_VERSION_ATLEAST (5,9,0)
		219	Perl_pad_push (aTHX_ padlist, AvFILLp (padlist) + 1);
		220	#else
172	Perl_pad_push (aTHX_ padlist, AvFILLp (padlist) + 1, 1);	221	Perl_pad_push (aTHX_ padlist, AvFILLp (padlist) + 1, 1);
173	#else
174	Perl_pad_push (aTHX_ padlist, AvFILLp (padlist) + 1);
175	#endif	222	#endif
176	newpad = (AV *)AvARRAY (padlist)[AvFILLp (padlist)];	223	newpad = (AV *)AvARRAY (padlist)[AvFILLp (padlist)];
177	--AvFILLp (padlist);	224	--AvFILLp (padlist);
178		225
179	av_store (newpadlist, 0, SvREFCNT_inc (*av_fetch (padlist, 0, FALSE)));	226	av_store (newpadlist, 0, SvREFCNT_inc (*av_fetch (padlist, 0, FALSE)));
…		…
181		228
182	return newpadlist;	229	return newpadlist;
183	}	230	}
184		231
185	static void	232	static void
186	free_padlist (pTHX_ AV *padlist)	233	free_padlist (AV *padlist)
187	{	234	{
188	/* may be during global destruction */	235	/* may be during global destruction */
189	if (SvREFCNT (padlist))	236	if (SvREFCNT (padlist))
190	{	237	{
191	I32 i = AvFILLp (padlist);	238	I32 i = AvFILLp (padlist);
…		…
212	AV *padlist;	259	AV *padlist;
213	AV av = (AV )mg->mg_obj;	260	AV av = (AV )mg->mg_obj;
214		261
215	/* casting is fun. */	262	/* casting is fun. */
216	while (&PL_sv_undef != (SV )(padlist = (AV )av_pop (av)))	263	while (&PL_sv_undef != (SV )(padlist = (AV )av_pop (av)))
217	free_padlist (aTHX_ padlist);	264	free_padlist (padlist);
218		265
219	SvREFCNT_dec (av);	266	SvREFCNT_dec (av);
220		267
221	return 0;	268	return 0;
222	}	269	}
223		270
224	#define PERL_MAGIC_coro PERL_MAGIC_ext	271	#define PERL_MAGIC_coro PERL_MAGIC_ext
225		272
226	static MGVTBL vtbl_coro = {0, 0, 0, 0, coro_cv_free};	273	static MGVTBL vtbl_coro = {0, 0, 0, 0, coro_cv_free};
227		274
		275	#define CORO_MAGIC(cv) \
		276	SvMAGIC (cv) \
		277	? SvMAGIC (cv)->mg_type == PERL_MAGIC_coro \
		278	? SvMAGIC (cv) \
		279	: mg_find ((SV *)cv, PERL_MAGIC_coro) \
		280	: 0
		281
228	/* the next two functions merely cache the padlists */	282	/* the next two functions merely cache the padlists */
229	static void	283	static void
230	get_padlist (pTHX_ CV *cv)	284	get_padlist (CV *cv)
231	{	285	{
232	MAGIC mg = mg_find ((SV )cv, PERL_MAGIC_coro);	286	MAGIC *mg = CORO_MAGIC (cv);
		287	AV *av;
233		288
234	if (mg && AvFILLp ((AV *)mg->mg_obj) >= 0)	289	if (mg && AvFILLp ((av = (AV *)mg->mg_obj)) >= 0)
235	CvPADLIST (cv) = (AV )av_pop ((AV )mg->mg_obj);	290	CvPADLIST (cv) = (AV *)AvARRAY (av)[AvFILLp (av)--];
236	else	291	else
237	{	292	{
238	#if 0	293	#if PREFER_PERL_FUNCTIONS
239	/* this should work - but it doesn't :( */	294	/* this is probably cleaner, but also slower? */
240	CV *cp = Perl_cv_clone (aTHX_ cv);	295	CV *cp = Perl_cv_clone (cv);
241	CvPADLIST (cv) = CvPADLIST (cp);	296	CvPADLIST (cv) = CvPADLIST (cp);
242	CvPADLIST (cp) = 0;	297	CvPADLIST (cp) = 0;
243	SvREFCNT_dec (cp);	298	SvREFCNT_dec (cp);
244	#else	299	#else
245	CvPADLIST (cv) = coro_clone_padlist (aTHX_ cv);	300	CvPADLIST (cv) = coro_clone_padlist (cv);
246	#endif	301	#endif
247	}	302	}
248	}	303	}
249		304
250	static void	305	static void
251	put_padlist (pTHX_ CV *cv)	306	put_padlist (CV *cv)
252	{	307	{
253	MAGIC mg = mg_find ((SV )cv, PERL_MAGIC_coro);	308	MAGIC *mg = CORO_MAGIC (cv);
		309	AV *av;
254		310
255	if (!mg)	311	if (!mg)
256	{	312	{
257	sv_magic ((SV *)cv, 0, PERL_MAGIC_coro, 0, 0);	313	sv_magic ((SV *)cv, 0, PERL_MAGIC_coro, 0, 0);
258	mg = mg_find ((SV *)cv, PERL_MAGIC_coro);	314	mg = mg_find ((SV *)cv, PERL_MAGIC_coro);
259	mg->mg_virtual = &vtbl_coro;	315	mg->mg_virtual = &vtbl_coro;
260	mg->mg_obj = (SV *)newAV ();	316	mg->mg_obj = (SV *)newAV ();
261	}	317	}
262		318
263	av_push ((AV )mg->mg_obj, (SV )CvPADLIST (cv));	319	av = (AV *)mg->mg_obj;
		320
		321	if (AvFILLp (av) >= AvMAX (av))
		322	av_extend (av, AvMAX (av) + 1);
		323
		324	AvARRAY (av)[++AvFILLp (av)] = (SV *)CvPADLIST (cv);
264	}	325	}
		326
		327	/ load & save, init *****************************************************/
265		328
266	#define SB do {	329	#define SB do {
267	#define SE } while (0)	330	#define SE } while (0)
268		331
269	#define LOAD(state) load_state(aTHX_ (state));
270	#define SAVE(state,flags) save_state(aTHX_ (state),(flags));
271
272	#define REPLACE_SV(sv,val) SB SvREFCNT_dec(sv); (sv) = (val); (val) = 0; SE	332	#define REPLACE_SV(sv,val) SB SvREFCNT_dec (sv); (sv) = (val); (val) = 0; SE
273		333
274	static void	334	static void
275	load_state(pTHX_ Coro__State c)	335	load_perl (Coro__State c)
276	{	336	{
277	PL_dowarn = c->dowarn;	337	#define VAR(name,type) PL_ ## name = c->name;
278	PL_in_eval = c->in_eval;	338	# include "state.h"
279		339	#undef VAR
280	PL_curstackinfo = c->curstackinfo;
281	PL_curstack = c->curstack;
282	PL_mainstack = c->mainstack;
283	PL_stack_sp = c->stack_sp;
284	PL_op = c->op;
285	PL_curpad = c->curpad;
286	PL_comppad = c->comppad;
287	PL_compcv = c->compcv;
288	PL_stack_base = c->stack_base;
289	PL_stack_max = c->stack_max;
290	PL_tmps_stack = c->tmps_stack;
291	PL_tmps_floor = c->tmps_floor;
292	PL_tmps_ix = c->tmps_ix;
293	PL_tmps_max = c->tmps_max;
294	PL_markstack = c->markstack;
295	PL_markstack_ptr = c->markstack_ptr;
296	PL_markstack_max = c->markstack_max;
297	PL_scopestack = c->scopestack;
298	PL_scopestack_ix = c->scopestack_ix;
299	PL_scopestack_max = c->scopestack_max;
300	PL_savestack = c->savestack;
301	PL_savestack_ix = c->savestack_ix;
302	PL_savestack_max = c->savestack_max;
303	#if PERL_VERSION < 9
304	PL_retstack = c->retstack;
305	PL_retstack_ix = c->retstack_ix;
306	PL_retstack_max = c->retstack_max;
307	#endif
308	PL_curpm = c->curpm;
309	PL_curcop = c->curcop;
310		340
311	if (c->defav) REPLACE_SV (GvAV (PL_defgv), c->defav);	341	if (c->defav) REPLACE_SV (GvAV (PL_defgv), c->defav);
312	if (c->defsv) REPLACE_SV (DEFSV , c->defsv);	342	if (c->defsv) REPLACE_SV (DEFSV , c->defsv);
313	if (c->errsv) REPLACE_SV (ERRSV , c->errsv);	343	if (c->errsv) REPLACE_SV (ERRSV , c->errsv);
		344	if (c->irssv)
		345	{
		346	if (c->irssv == PL_rs \|\| sv_eq (PL_rs, c->irssv))
		347	SvREFCNT_dec (c->irssv);
		348	else
		349	{
		350	REPLACE_SV (PL_rs, c->irssv);
		351	if (!c->irssv_sv) c->irssv_sv = get_sv ("/", 0);
		352	sv_setsv (c->irssv_sv, PL_rs);
		353	}
		354	}
314		355
315	{	356	{
316	dSP;	357	dSP;
317	CV *cv;	358	CV *cv;
318		359
319	/* now do the ugly restore mess */	360	/* now do the ugly restore mess */
320	while ((cv = (CV *)POPs))	361	while ((cv = (CV *)POPs))
321	{	362	{
322	AV padlist = (AV )POPs;
323
324	if (padlist)
325	{
326	put_padlist (aTHX_ cv); /* mark this padlist as available */	363	put_padlist (cv); /* mark this padlist as available */
327	CvPADLIST(cv) = padlist;	364	CvDEPTH (cv) = PTR2IV (POPs);
328	}	365	CvPADLIST (cv) = (AV *)POPs;
329
330	++CvDEPTH(cv);
331	}	366	}
332		367
333	PUTBACK;	368	PUTBACK;
334	}	369	}
		370	assert (!PL_comppad \|\| AvARRAY (PL_comppad));//D
335	}	371	}
336		372
337	static void	373	static void
338	save_state(pTHX_ Coro__State c, int flags)	374	save_perl (Coro__State c)
339	{	375	{
		376	assert (!PL_comppad \|\| AvARRAY (PL_comppad));//D
340	{	377	{
341	dSP;	378	dSP;
342	I32 cxix = cxstack_ix;	379	I32 cxix = cxstack_ix;
343	PERL_CONTEXT *ccstk = cxstack;	380	PERL_CONTEXT *ccstk = cxstack;
344	PERL_SI *top_si = PL_curstackinfo;	381	PERL_SI *top_si = PL_curstackinfo;
…		…
346	/*	383	/*
347	* the worst thing you can imagine happens first - we have to save	384	* the worst thing you can imagine happens first - we have to save
348	* (and reinitialize) all cv's in the whole callchain :(	385	* (and reinitialize) all cv's in the whole callchain :(
349	*/	386	*/
350		387
		388	EXTEND (SP, 3 + 1);
351	PUSHs (Nullsv);	389	PUSHs (Nullsv);
352	/* this loop was inspired by pp_caller */	390	/* this loop was inspired by pp_caller */
353	for (;;)	391	for (;;)
354	{	392	{
355	while (cxix >= 0)	393	while (cxix >= 0)
356	{	394	{
357	PERL_CONTEXT *cx = &ccstk[cxix--];	395	PERL_CONTEXT *cx = &ccstk[cxix--];
358		396
359	if (CxTYPE(cx) == CXt_SUB)	397	if (CxTYPE (cx) == CXt_SUB)
360	{	398	{
361	CV *cv = cx->blk_sub.cv;	399	CV *cv = cx->blk_sub.cv;
		400
362	if (CvDEPTH(cv))	401	if (CvDEPTH (cv))
363	{	402	{
364	EXTEND (SP, CvDEPTH(cv)*2);	403	EXTEND (SP, 3);
365
366	while (--CvDEPTH(cv))
367	{
368	/* this tells the restore code to increment CvDEPTH */
369	PUSHs (Nullsv);
370	PUSHs ((SV *)cv);
371	}
372
373	PUSHs ((SV *)CvPADLIST(cv));	404	PUSHs ((SV *)CvPADLIST (cv));
		405	PUSHs (INT2PTR (SV *, CvDEPTH (cv)));
374	PUSHs ((SV *)cv);	406	PUSHs ((SV *)cv);
375		407
		408	CvDEPTH (cv) = 0;
376	get_padlist (aTHX_ cv);	409	get_padlist (cv);
377	}	410	}
378	}	411	}
379	#ifdef CXt_FORMAT
380	else if (CxTYPE(cx) == CXt_FORMAT)
381	{
382	/* I never used formats, so how should I know how these are implemented? */
383	/* my bold guess is as a simple, plain sub... */
384	croak ("CXt_FORMAT not yet handled. Don't switch coroutines from within formats");
385	}
386	#endif
387	}	412	}
388		413
389	if (top_si->si_type == PERLSI_MAIN)	414	if (top_si->si_type == PERLSI_MAIN)
390	break;	415	break;
391		416
…		…
395	}	420	}
396		421
397	PUTBACK;	422	PUTBACK;
398	}	423	}
399		424
400	c->defav = flags & TRANSFER_SAVE_DEFAV ? (AV *)SvREFCNT_inc (GvAV (PL_defgv)) : 0;	425	c->defav = c->save & CORO_SAVE_DEFAV ? (AV *)SvREFCNT_inc (GvAV (PL_defgv)) : 0;
401	c->defsv = flags & TRANSFER_SAVE_DEFSV ? SvREFCNT_inc (DEFSV) : 0;	426	c->defsv = c->save & CORO_SAVE_DEFSV ? SvREFCNT_inc (DEFSV) : 0;
402	c->errsv = flags & TRANSFER_SAVE_ERRSV ? SvREFCNT_inc (ERRSV) : 0;	427	c->errsv = c->save & CORO_SAVE_ERRSV ? SvREFCNT_inc (ERRSV) : 0;
		428	c->irssv = c->save & CORO_SAVE_IRSSV ? SvREFCNT_inc (PL_rs) : 0;
403		429
404	c->dowarn = PL_dowarn;	430	#define VAR(name,type)c->name = PL_ ## name;
405	c->in_eval = PL_in_eval;	431	# include "state.h"
406		432	#undef VAR
407	c->curstackinfo = PL_curstackinfo;
408	c->curstack = PL_curstack;
409	c->mainstack = PL_mainstack;
410	c->stack_sp = PL_stack_sp;
411	c->op = PL_op;
412	c->curpad = PL_curpad;
413	c->comppad = PL_comppad;
414	c->compcv = PL_compcv;
415	c->stack_base = PL_stack_base;
416	c->stack_max = PL_stack_max;
417	c->tmps_stack = PL_tmps_stack;
418	c->tmps_floor = PL_tmps_floor;
419	c->tmps_ix = PL_tmps_ix;
420	c->tmps_max = PL_tmps_max;
421	c->markstack = PL_markstack;
422	c->markstack_ptr = PL_markstack_ptr;
423	c->markstack_max = PL_markstack_max;
424	c->scopestack = PL_scopestack;
425	c->scopestack_ix = PL_scopestack_ix;
426	c->scopestack_max = PL_scopestack_max;
427	c->savestack = PL_savestack;
428	c->savestack_ix = PL_savestack_ix;
429	c->savestack_max = PL_savestack_max;
430	#if PERL_VERSION < 9
431	c->retstack = PL_retstack;
432	c->retstack_ix = PL_retstack_ix;
433	c->retstack_max = PL_retstack_max;
434	#endif
435	c->curpm = PL_curpm;
436	c->curcop = PL_curcop;
437	}	433	}
438		434
439	/*	435	/*
440	* allocate various perl stacks. This is an exact copy	436	* allocate various perl stacks. This is an exact copy
441	* of perl.c:init_stacks, except that it uses less memory	437	* of perl.c:init_stacks, except that it uses less memory
442	* on the (sometimes correct) assumption that coroutines do	438	* on the (sometimes correct) assumption that coroutines do
443	* not usually need a lot of stackspace.	439	* not usually need a lot of stackspace.
444	*/	440	*/
		441	#if PREFER_PERL_FUNCTIONS
		442	# define coro_init_stacks init_stacks
		443	#else
445	static void	444	static void
446	coro_init_stacks (pTHX)	445	coro_init_stacks ()
447	{	446	{
448	LOCK;
449
450	PL_curstackinfo = new_stackinfo(96, 1024/sizeof(PERL_CONTEXT) - 1);	447	PL_curstackinfo = new_stackinfo(128, 1024/sizeof(PERL_CONTEXT));
451	PL_curstackinfo->si_type = PERLSI_MAIN;	448	PL_curstackinfo->si_type = PERLSI_MAIN;
452	PL_curstack = PL_curstackinfo->si_stack;	449	PL_curstack = PL_curstackinfo->si_stack;
453	PL_mainstack = PL_curstack; /* remember in case we switch stacks */	450	PL_mainstack = PL_curstack; /* remember in case we switch stacks */
454		451
455	PL_stack_base = AvARRAY(PL_curstack);	452	PL_stack_base = AvARRAY(PL_curstack);
456	PL_stack_sp = PL_stack_base;	453	PL_stack_sp = PL_stack_base;
457	PL_stack_max = PL_stack_base + AvMAX(PL_curstack);	454	PL_stack_max = PL_stack_base + AvMAX(PL_curstack);
458		455
459	New(50,PL_tmps_stack,96,SV*);	456	New(50,PL_tmps_stack,128,SV*);
460	PL_tmps_floor = -1;	457	PL_tmps_floor = -1;
461	PL_tmps_ix = -1;	458	PL_tmps_ix = -1;
462	PL_tmps_max = 96;	459	PL_tmps_max = 128;
463		460
464	New(54,PL_markstack,16,I32);	461	New(54,PL_markstack,32,I32);
465	PL_markstack_ptr = PL_markstack;	462	PL_markstack_ptr = PL_markstack;
466	PL_markstack_max = PL_markstack + 16;	463	PL_markstack_max = PL_markstack + 32;
467		464
468	#ifdef SET_MARK_OFFSET	465	#ifdef SET_MARK_OFFSET
469	SET_MARK_OFFSET;	466	SET_MARK_OFFSET;
470	#endif	467	#endif
471		468
472	New(54,PL_scopestack,16,I32);	469	New(54,PL_scopestack,32,I32);
473	PL_scopestack_ix = 0;	470	PL_scopestack_ix = 0;
474	PL_scopestack_max = 16;	471	PL_scopestack_max = 32;
475		472
476	New(54,PL_savestack,96,ANY);	473	New(54,PL_savestack,64,ANY);
477	PL_savestack_ix = 0;	474	PL_savestack_ix = 0;
478	PL_savestack_max = 96;	475	PL_savestack_max = 64;
479		476
480	#if PERL_VERSION < 9	477	#if !PERL_VERSION_ATLEAST (5,9,0)
481	New(54,PL_retstack,8,OP*);	478	New(54,PL_retstack,16,OP*);
482	PL_retstack_ix = 0;	479	PL_retstack_ix = 0;
483	PL_retstack_max = 8;	480	PL_retstack_max = 16;
484	#endif	481	#endif
485
486	UNLOCK;
487	}	482	}
		483	#endif
488		484
489	/*	485	/*
490	* destroy the stacks, the callchain etc...	486	* destroy the stacks, the callchain etc...
491	*/	487	*/
492	static void	488	static void
493	destroy_stacks(pTHX)	489	coro_destroy_stacks ()
494	{	490	{
495	if (!IN_DESTRUCT)	491	if (!IN_DESTRUCT)
496	{	492	{
497	/* is this ugly, I ask? */	493	/* restore all saved variables and stuff */
498	LEAVE_SCOPE (0);	494	LEAVE_SCOPE (0);
		495	assert (PL_tmps_floor == -1);
499		496
500	/* sure it is, but more important: is it correct?? :/ */	497	/* free all temporaries */
501	FREETMPS;	498	FREETMPS;
		499	assert (PL_tmps_ix == -1);
502		500
		501	/* unwind all extra stacks */
503	/POPSTACK_TO (PL_mainstack);//D//use/	502	POPSTACK_TO (PL_mainstack);
		503
		504	/* unwind main stack */
		505	dounwind (-1);
504	}	506	}
505		507
506	while (PL_curstackinfo->si_next)	508	while (PL_curstackinfo->si_next)
507	PL_curstackinfo = PL_curstackinfo->si_next;	509	PL_curstackinfo = PL_curstackinfo->si_next;
508		510
509	while (PL_curstackinfo)	511	while (PL_curstackinfo)
510	{	512	{
511	PERL_SI *p = PL_curstackinfo->si_prev;	513	PERL_SI *p = PL_curstackinfo->si_prev;
512		514
513	{ /D//remove/
514	dSP;
515	SWITCHSTACK (PL_curstack, PL_curstackinfo->si_stack);
516	PUTBACK; /* possibly superfluous */
517	}
518
519	if (!IN_DESTRUCT)	515	if (!IN_DESTRUCT)
520	{
521	dounwind (-1);/D//remove/
522	SvREFCNT_dec (PL_curstackinfo->si_stack);	516	SvREFCNT_dec (PL_curstackinfo->si_stack);
523	}
524		517
525	Safefree (PL_curstackinfo->si_cxstack);	518	Safefree (PL_curstackinfo->si_cxstack);
526	Safefree (PL_curstackinfo);	519	Safefree (PL_curstackinfo);
527	PL_curstackinfo = p;	520	PL_curstackinfo = p;
528	}	521	}
529		522
530	Safefree (PL_tmps_stack);	523	Safefree (PL_tmps_stack);
531	Safefree (PL_markstack);	524	Safefree (PL_markstack);
532	Safefree (PL_scopestack);	525	Safefree (PL_scopestack);
533	Safefree (PL_savestack);	526	Safefree (PL_savestack);
534	#if PERL_VERSION < 9	527	#if !PERL_VERSION_ATLEAST (5,9,0)
535	Safefree (PL_retstack);	528	Safefree (PL_retstack);
536	#endif	529	#endif
537	}	530	}
		531
		532	/ coroutine stack handling **********************************************/
538		533
539	static void	534	static void
540	setup_coro (struct coro *coro)	535	setup_coro (struct coro *coro)
541	{	536	{
542	/*	537	/*
543	* emulate part of the perl startup here.	538	* emulate part of the perl startup here.
544	*/	539	*/
545	dTHX;	540
		541	coro_init_stacks ();
		542
		543	PL_curcop = &PL_compiling;
		544	PL_in_eval = EVAL_NULL;
		545	PL_comppad = 0;
		546	PL_curpm = 0;
		547	PL_localizing = 0;
		548	PL_dirty = 0;
		549	PL_restartop = 0;
		550
		551	{
		552	dSP;
		553	LOGOP myop;
		554
		555	SvREFCNT_dec (GvAV (PL_defgv));
		556	GvAV (PL_defgv) = coro->args; coro->args = 0;
		557
		558	Zero (&myop, 1, LOGOP);
		559	myop.op_next = Nullop;
		560	myop.op_flags = OPf_WANT_VOID;
		561
		562	PUSHMARK (SP);
		563	XPUSHs ((SV *)get_cv ("Coro::State::_coro_init", FALSE));
		564	PUTBACK;
		565	PL_op = (OP *)&myop;
		566	PL_op = PL_ppaddr[OP_ENTERSUB](aTHX);
		567	SPAGAIN;
		568	}
		569
		570	ENTER; /* necessary e.g. for dounwind */
		571	}
		572
		573	static void
		574	free_coro_mortal ()
		575	{
		576	if (coro_mortal)
		577	{
		578	SvREFCNT_dec (coro_mortal);
		579	coro_mortal = 0;
		580	}
		581	}
		582
		583	/* inject a fake call to Coro::State::_cctx_init into the execution */
		584	static void NOINLINE
		585	prepare_cctx (coro_cctx *cctx)
		586	{
546	dSP;	587	dSP;
547	UNOP myop;	588	LOGOP myop;
548	SV sub_init = (SV )get_cv ("Coro::State::coro_init", FALSE);
549		589
550	coro_init_stacks (aTHX);
551	/PL_curcop = 0;/
552	/PL_in_eval = PL_in_eval;/ /* inherit */
553	SvREFCNT_dec (GvAV (PL_defgv));
554	GvAV (PL_defgv) = coro->args; coro->args = 0;
555
556	SPAGAIN;
557
558	Zero (&myop, 1, UNOP);	590	Zero (&myop, 1, LOGOP);
559	myop.op_next = Nullop;	591	myop.op_next = PL_op;
560	myop.op_flags = OPf_WANT_VOID;	592	myop.op_flags = OPf_WANT_VOID \| OPf_STACKED;
561		593
		594	PUSHMARK (SP);
		595	EXTEND (SP, 2);
		596	PUSHs (sv_2mortal (newSViv (PTR2IV (cctx))));
		597	PUSHs ((SV *)get_cv ("Coro::State::_cctx_init", FALSE));
		598	PUTBACK;
562	PL_op = (OP *)&myop;	599	PL_op = (OP *)&myop;
563
564	PUSHMARK(SP);
565	XPUSHs (sub_init);
566	PUTBACK;
567	PL_op = PL_ppaddr[OP_ENTERSUB](aTHX);	600	PL_op = PL_ppaddr[OP_ENTERSUB](aTHX);
568	SPAGAIN;	601	SPAGAIN;
569
570	ENTER; /* necessary e.g. for dounwind */
571	}
572
573	static void
574	free_coro_mortal ()
575	{
576	if (coro_mortal)
577	{
578	SvREFCNT_dec (coro_mortal);
579	coro_mortal = 0;
580	}
581	}	602	}
582		603
583	static void	604	static void
584	coro_run (void *arg)	605	coro_run (void *arg)
585	{	606	{
		607	/* coro_run is the alternative tail of transfer(), so unlock here. */
		608	UNLOCK;
		609
586	/*	610	/*
587	* this is a _very_ stripped down perl interpreter ;)	611	* this is a _very_ stripped down perl interpreter ;)
588	*/	612	*/
589	dTHX;
590
591	UNLOCK;
592
593	PL_top_env = &PL_start_env;	613	PL_top_env = &PL_start_env;
594		614
595	sv_setiv (get_sv ("Coro::State::cctx_stack", FALSE), PTR2IV ((coro_stack *)arg));	615	/* inject call to cctx_init */
596	sv_setiv (get_sv ("Coro::State::cctx_restartop", FALSE), PTR2IV (PL_op));	616	prepare_cctx ((coro_cctx *)arg);
597		617
598	/* continue at cctx_init, without entersub */
599	PL_restartop = CvSTART (get_cv ("Coro::State::cctx_init", FALSE));
600
601	/* somebody will hit me for both perl_run and PL_restart_op */	618	/* somebody will hit me for both perl_run and PL_restartop */
602	perl_run (aTHX_ PERL_GET_CONTEXT);	619	PL_restartop = PL_op;
		620	perl_run (PL_curinterp);
603		621
		622	fputs ("FATAL: C coroutine fell over the edge of the world, aborting. Did you call exit in a coroutine?\n", stderr);
604	abort ();	623	abort ();
605	}	624	}
606		625
607	static coro_stack *	626	static coro_cctx *
608	stack_new ()	627	cctx_new ()
609	{	628	{
610	coro_stack *stack;	629	coro_cctx *cctx;
611		630
		631	++cctx_count;
		632
612	New (0, stack, 1, coro_stack);	633	Newz (0, cctx, 1, coro_cctx);
613		634
614	#if HAVE_MMAP	635	#if HAVE_MMAP
615		636
616	stack->ssize = ((STACKSIZE * sizeof (long) + PAGESIZE - 1) / PAGESIZE + STACKGUARD) * PAGESIZE; /* mmap should do allocate-on-write for us */	637	cctx->ssize = ((STACKSIZE * sizeof (long) + PAGESIZE - 1) / PAGESIZE + STACKGUARD) * PAGESIZE;
		638	/* mmap supposedly does allocate-on-write for us */
617	stack->sptr = mmap (0, stack->ssize, PROT_EXEC\|PROT_READ\|PROT_WRITE, MAP_PRIVATE\|MAP_ANONYMOUS, 0, 0);	639	cctx->sptr = mmap (0, cctx->ssize, PROT_EXEC\|PROT_READ\|PROT_WRITE, MAP_PRIVATE\|MAP_ANONYMOUS, 0, 0);
618		640
619	if (stack->sptr == (void *)-1)	641	if (cctx->sptr != (void *)-1)
		642	{
		643	# if STACKGUARD
		644	mprotect (cctx->sptr, STACKGUARD * PAGESIZE, PROT_NONE);
		645	# endif
		646	REGISTER_STACK (
		647	cctx,
		648	STACKGUARD * PAGESIZE + (char *)cctx->sptr,
		649	cctx->ssize + (char *)cctx->sptr
		650	);
		651
		652	coro_create (&cctx->cctx, coro_run, (void *)cctx, cctx->sptr, cctx->ssize);
620	{	653	}
		654	else
		655	#endif
		656	{
		657	cctx->ssize = -STACKSIZE * (long)sizeof (long);
		658	New (0, cctx->sptr, STACKSIZE, long);
		659
		660	if (!cctx->sptr)
		661	{
621	perror ("FATAL: unable to mmap stack for coroutine");	662	perror ("FATAL: unable to allocate stack for coroutine");
622	_exit (EXIT_FAILURE);	663	_exit (EXIT_FAILURE);
623	}	664	}
624		665
625	mprotect (stack->sptr, STACKGUARD * PAGESIZE, PROT_NONE);	666	REGISTER_STACK (
		667	cctx,
		668	(char *)cctx->sptr,
		669	(char *)cctx->sptr - cctx->ssize
		670	);
626		671
627	#else	672	coro_create (&cctx->cctx, coro_run, (void *)cctx, cctx->sptr, -cctx->ssize);
628
629	stack->ssize = STACKSIZE * (long)sizeof (long);
630	New (0, stack->sptr, STACKSIZE, long);
631
632	if (!stack->sptr)
633	{	673	}
634	perror (stderr, "FATAL: unable to malloc stack for coroutine");
635	_exit (EXIT_FAILURE);
636	}
637		674
638	#endif
639
640	coro_create (&stack->cctx, coro_run, (void *)stack, stack->sptr, stack->ssize);
641
642	return stack;	675	return cctx;
643	}	676	}
644		677
645	static void	678	static void
646	stack_free (coro_stack *stack)	679	cctx_destroy (coro_cctx *cctx)
647	{	680	{
648	if (!stack \|\| stack == main_stack)	681	if (!cctx)
649	return;	682	return;
650		683
		684	--cctx_count;
		685
		686	#if USE_VALGRIND
		687	VALGRIND_STACK_DEREGISTER (cctx->valgrind_id);
		688	#endif
		689
651	#if HAVE_MMAP	690	#if HAVE_MMAP
		691	if (cctx->ssize > 0)
652	munmap (stack->sptr, stack->ssize);	692	munmap (cctx->sptr, cctx->ssize);
653	#else	693	else
		694	#endif
654	Safefree (stack->sptr);	695	Safefree (cctx->sptr);
655	#endif
656		696
657	Safefree (stack);	697	Safefree (cctx);
658	}	698	}
659		699
660	static coro_stack *stack_first;
661
662	static coro_stack *	700	static coro_cctx *
663	stack_get ()	701	cctx_get ()
664	{	702	{
665	coro_stack *stack;	703	coro_cctx *cctx;
666		704
667	if (stack_first)	705	if (cctx_first)
668	{	706	{
669	stack = stack_first;	707	cctx = cctx_first;
670	stack_first = stack->next;	708	cctx_first = cctx->next;
		709	--cctx_idle;
671	}	710	}
672	else	711	else
673	{	712	{
674	stack = stack_new ();	713	cctx = cctx_new ();
675	PL_op = PL_op->op_next;	714	PL_op = PL_op->op_next;
676	}	715	}
677		716
678	return stack;	717	return cctx;
679	}	718	}
680		719
681	static void	720	static void
682	stack_put (coro_stack *stack)	721	cctx_put (coro_cctx *cctx)
683	{	722	{
684	stack->next = stack_first;	723	/* free another cctx if overlimit */
685	stack_first = stack;	724	if (cctx_idle >= MAX_IDLE_CCTX)
		725	{
		726	coro_cctx *first = cctx_first;
		727	cctx_first = first->next;
		728	--cctx_idle;
		729
		730	assert (!first->inuse);
		731	cctx_destroy (first);
		732	}
		733
		734	++cctx_idle;
		735	cctx->next = cctx_first;
		736	cctx_first = cctx;
686	}	737	}
		738
		739	/ coroutine switching ***************************************************/
687		740
688	/* never call directly, always through the coro_state_transfer global variable */	741	/* never call directly, always through the coro_state_transfer global variable */
689	static void	742	static void NOINLINE
690	transfer_impl (pTHX_ struct coro prev, struct coro next, int flags)	743	transfer (struct coro prev, struct coro next)
691	{	744	{
692	dSTACKLEVEL;	745	dSTACKLEVEL;
693		746
694	/* sometimes transfer is only called to set idle_sp */	747	/* sometimes transfer is only called to set idle_sp */
695	if (flags == TRANSFER_SET_STACKLEVEL)	748	if (!next)
		749	{
696	((coro_stack *)prev)->idle_sp = STACKLEVEL;	750	((coro_cctx *)prev)->idle_sp = STACKLEVEL;
		751	assert (((coro_cctx )prev)->idle_te = PL_top_env); / just for the side-effect when asserts are enabled */
		752	}
697	else if (prev != next)	753	else if (prev != next)
698	{	754	{
699	coro_stack *prev__stack;	755	coro_cctx *prev__cctx;
		756
		757	if (prev->flags & CF_NEW)
		758	{
		759	/* create a new empty context */
		760	Newz (0, prev->cctx, 1, coro_cctx);
		761	prev->cctx->inuse = 1;
		762	prev->flags &= ~CF_NEW;
		763	prev->flags \|= CF_RUNNING;
		764	}
		765
		766	/TODO: must not croak here /
		767	if (!prev->flags & CF_RUNNING)
		768	croak ("Coro::State::transfer called with non-running prev Coro::State, but can only transfer from running states");
		769
		770	if (next->flags & CF_RUNNING)
		771	croak ("Coro::State::transfer called with running next Coro::State, but can only transfer to inactive states");
		772
		773	if (next->flags & CF_DESTROYED)
		774	croak ("Coro::State::transfer called with destroyed next Coro::State, but can only transfer to inactive states");
		775
		776	prev->flags &= ~CF_RUNNING;
		777	next->flags \|= CF_RUNNING;
700		778
701	LOCK;	779	LOCK;
702		780
703	if (next->mainstack)	781	if (next->flags & CF_NEW)
704	{	782	{
705	/* coroutine already started */	783	/* need to start coroutine */
706	SAVE (prev, flags);	784	next->flags &= ~CF_NEW;
707	LOAD (next);	785	/* first get rid of the old state */
		786	save_perl (prev);
		787	/* setup coroutine call */
		788	setup_coro (next);
		789	/* need a new stack */
		790	assert (!next->cctx);
708	}	791	}
709	else	792	else
710	{	793	{
711	/* need to start coroutine */	794	/* coroutine already started */
712	/* first get rid of the old state */	795	save_perl (prev);
713	SAVE (prev, -1);	796	load_perl (next);
714	/* setup coroutine call */
715	setup_coro (next);
716	/* need a stack */
717	next->stack = 0;
718	}	797	}
719		798
720	prev__stack = prev->stack;	799	prev__cctx = prev->cctx;
721		800
722	/* possibly "free" the stack */	801	/* possibly "free" the cctx */
723	if (prev__stack->idle_sp == STACKLEVEL)	802	if (prev__cctx->idle_sp == STACKLEVEL)
724	{	803	{
725	stack_put (prev__stack);	804	/* I assume that STACKLEVEL is a stronger indicator than PL_top_env changes */
		805	assert (("ERROR: current top_env must equal previous top_env", PL_top_env == prev__cctx->idle_te));
		806
726	prev->stack = 0;	807	prev->cctx = 0;
		808
		809	cctx_put (prev__cctx);
		810	prev__cctx->inuse = 0;
727	}	811	}
728		812
729	if (!next->stack)	813	if (!next->cctx)
730	next->stack = stack_get ();
731
732	if (prev__stack != next->stack)
733	{	814	{
734	prev__stack->top_env = PL_top_env;	815	next->cctx = cctx_get ();
735	PL_top_env = next->stack->top_env;	816	assert (!next->cctx->inuse);
736	coro_transfer (&prev__stack->cctx, &next->stack->cctx);	817	next->cctx->inuse = 1;
737	}	818	}
738		819
		820	if (prev__cctx != next->cctx)
		821	{
		822	prev__cctx->top_env = PL_top_env;
		823	PL_top_env = next->cctx->top_env;
		824	coro_transfer (&prev__cctx->cctx, &next->cctx->cctx);
		825	}
		826
739	free_coro_mortal ();	827	free_coro_mortal ();
740
741	UNLOCK;	828	UNLOCK;
742	}	829	}
743	}	830	}
744		831
745	/* use this function pointer to call the above function */
746	/* this is done to increase chances of the compiler not inlining the call */
747	/* not static to make it even harder for the compiler (and theoretically impossible in most cases */
748	void (coro_state_transfer)(pTHX_ struct coro prev, struct coro *next, int flags) = transfer_impl;
749
750	struct transfer_args	832	struct transfer_args
751	{	833	{
752	struct coro prev, next;	834	struct coro prev, next;
753	int flags;
754	};	835	};
755		836
756	#define TRANSFER(ta) coro_state_transfer ((ta).prev, (ta).next, (ta).flags)	837	#define TRANSFER(ta) transfer ((ta).prev, (ta).next)
757		838
		839	/ high level stuff ******************************************************/
		840
758	static void	841	static int
759	coro_state_destroy (struct coro *coro)	842	coro_state_destroy (struct coro *coro)
760	{	843	{
761	if (coro->refcnt--)	844	if (coro->flags & CF_DESTROYED)
762	return;	845	return 0;
		846
		847	coro->flags \|= CF_DESTROYED;
		848
		849	if (coro->flags & CF_READY)
		850	{
		851	/* reduce nready, as destroying a ready coro effectively unreadies it */
		852	/* alternative: look through all ready queues and remove the coro */
		853	LOCK;
		854	--coro_nready;
		855	UNLOCK;
		856	}
		857	else
		858	coro->flags \|= CF_READY; /* make sure it is NOT put into the readyqueue */
763		859
764	if (coro->mainstack && coro->mainstack != main_mainstack)	860	if (coro->mainstack && coro->mainstack != main_mainstack)
765	{	861	{
766	struct coro temp;	862	struct coro temp;
767		863
768	SAVE (aTHX_ (&temp), TRANSFER_SAVE_ALL);	864	assert (!(coro->flags & CF_RUNNING));
769	LOAD (aTHX_ coro);
770		865
		866	Zero (&temp, 1, struct coro);
		867	temp.save = CORO_SAVE_ALL;
		868
		869	if (coro->flags & CF_RUNNING)
		870	croak ("FATAL: tried to destroy currently running coroutine");
		871
		872	save_perl (&temp);
		873	load_perl (coro);
		874
771	destroy_stacks (aTHX);	875	coro_destroy_stacks ();
772		876
773	LOAD ((&temp)); /* this will get rid of defsv etc.. */	877	load_perl (&temp); /* this will get rid of defsv etc.. */
774		878
775	coro->mainstack = 0;	879	coro->mainstack = 0;
776	}	880	}
777		881
778	stack_free (coro->stack);	882	cctx_destroy (coro->cctx);
779	SvREFCNT_dec (coro->args);	883	SvREFCNT_dec (coro->args);
780	Safefree (coro);	884
		885	return 1;
781	}	886	}
782		887
783	static int	888	static int
784	coro_state_clear (SV sv, MAGIC mg)	889	coro_state_free (pTHX_ SV sv, MAGIC mg)
785	{	890	{
786	struct coro coro = (struct coro )mg->mg_ptr;	891	struct coro coro = (struct coro )mg->mg_ptr;
787	mg->mg_ptr = 0;	892	mg->mg_ptr = 0;
788		893
		894	if (--coro->refcnt < 0)
		895	{
789	coro_state_destroy (coro);	896	coro_state_destroy (coro);
		897	Safefree (coro);
		898	}
790		899
791	return 0;	900	return 0;
792	}	901	}
793		902
794	static int	903	static int
795	coro_state_dup (MAGIC mg, CLONE_PARAMS params)	904	coro_state_dup (pTHX_ MAGIC mg, CLONE_PARAMS params)
796	{	905	{
797	struct coro coro = (struct coro )mg->mg_ptr;	906	struct coro coro = (struct coro )mg->mg_ptr;
798		907
799	++coro->refcnt;	908	++coro->refcnt;
800		909
801	return 0;	910	return 0;
802	}	911	}
803		912
804	static MGVTBL coro_state_vtbl = { 0, 0, 0, 0, coro_state_clear, 0, coro_state_dup, 0 };	913	static MGVTBL coro_state_vtbl = {
		914	0, 0, 0, 0,
		915	coro_state_free,
		916	0,
		917	#ifdef MGf_DUP
		918	coro_state_dup,
		919	#else
		920	# define MGf_DUP 0
		921	#endif
		922	};
805		923
806	static struct coro *	924	static struct coro *
807	SvSTATE (SV *coro)	925	SvSTATE (SV *coro)
808	{	926	{
809	HV *stash;	927	HV *stash;
…		…
824	assert (mg->mg_type == PERL_MAGIC_ext);	942	assert (mg->mg_type == PERL_MAGIC_ext);
825	return (struct coro *)mg->mg_ptr;	943	return (struct coro *)mg->mg_ptr;
826	}	944	}
827		945
828	static void	946	static void
829	prepare_transfer (pTHX_ struct transfer_args ta, SV prev, SV *next, int flags)	947	prepare_transfer (struct transfer_args ta, SV prev_sv, SV *next_sv)
830	{	948	{
831	ta->prev = SvSTATE (prev);	949	ta->prev = SvSTATE (prev_sv);
832	ta->next = SvSTATE (next);	950	ta->next = SvSTATE (next_sv);
833	ta->flags = flags;
834	}	951	}
835		952
836	static void	953	static void
837	api_transfer (SV prev, SV next, int flags)	954	api_transfer (SV prev_sv, SV next_sv)
838	{	955	{
839	dTHX;
840	struct transfer_args ta;	956	struct transfer_args ta;
841		957
842	prepare_transfer (aTHX_ &ta, prev, next, flags);	958	prepare_transfer (&ta, prev_sv, next_sv);
843	TRANSFER (ta);	959	TRANSFER (ta);
844	}	960	}
845		961
		962	static int
		963	api_save (SV *coro_sv, int new_save)
		964	{
		965	struct coro *coro = SvSTATE (coro_sv);
		966	int old_save = coro->save;
		967
		968	if (new_save >= 0)
		969	coro->save = new_save;
		970
		971	return old_save;
		972	}
		973
846	/ Coro ******************************************************************/	974	/ Coro ******************************************************************/
847		975
848	#define PRIO_MAX 3
849	#define PRIO_HIGH 1
850	#define PRIO_NORMAL 0
851	#define PRIO_LOW -1
852	#define PRIO_IDLE -3
853	#define PRIO_MIN -4
854
855	/* for Coro.pm */
856	static GV coro_current, coro_idle;
857	static AV *coro_ready [PRIO_MAX-PRIO_MIN+1];
858	static int coro_nready;
859
860	static void	976	static void
861	coro_enq (pTHX_ SV *sv)	977	coro_enq (SV *coro_sv)
862	{	978	{
863	int prio;
864
865	if (SvTYPE (sv) != SVt_PVHV)
866	croak ("Coro::ready tried to enqueue something that is not a coroutine");
867
868	prio = SvSTATE (sv)->prio;
869
870	av_push (coro_ready [prio - PRIO_MIN], sv);	979	av_push (coro_ready [SvSTATE (coro_sv)->prio - PRIO_MIN], coro_sv);
871	coro_nready++;
872	}	980	}
873		981
874	static SV *	982	static SV *
875	coro_deq (pTHX_ int min_prio)	983	coro_deq (int min_prio)
876	{	984	{
877	int prio = PRIO_MAX - PRIO_MIN;	985	int prio = PRIO_MAX - PRIO_MIN;
878		986
879	min_prio -= PRIO_MIN;	987	min_prio -= PRIO_MIN;
880	if (min_prio < 0)	988	if (min_prio < 0)
881	min_prio = 0;	989	min_prio = 0;
882		990
883	for (prio = PRIO_MAX - PRIO_MIN + 1; --prio >= min_prio; )	991	for (prio = PRIO_MAX - PRIO_MIN + 1; --prio >= min_prio; )
884	if (AvFILLp (coro_ready [prio]) >= 0)	992	if (AvFILLp (coro_ready [prio]) >= 0)
885	{
886	coro_nready--;
887	return av_shift (coro_ready [prio]);	993	return av_shift (coro_ready [prio]);
888	}
889		994
890	return 0;	995	return 0;
891	}	996	}
892		997
893	static void	998	static int
894	api_ready (SV *coro)	999	api_ready (SV *coro_sv)
895	{	1000	{
896	dTHX;	1001	struct coro *coro;
897		1002
898	if (SvROK (coro))	1003	if (SvROK (coro_sv))
899	coro = SvRV (coro);	1004	coro_sv = SvRV (coro_sv);
		1005
		1006	coro = SvSTATE (coro_sv);
		1007
		1008	if (coro->flags & CF_READY)
		1009	return 0;
		1010
		1011	coro->flags \|= CF_READY;
900		1012
901	LOCK;	1013	LOCK;
902	coro_enq (aTHX_ SvREFCNT_inc (coro));	1014	coro_enq (SvREFCNT_inc (coro_sv));
		1015	++coro_nready;
903	UNLOCK;	1016	UNLOCK;
904	}
905		1017
		1018	return 1;
		1019	}
		1020
906	static void	1021	static int
		1022	api_is_ready (SV *coro_sv)
		1023	{
		1024	return !!(SvSTATE (coro_sv)->flags & CF_READY);
		1025	}
		1026
		1027	static void
907	prepare_schedule (aTHX_ struct transfer_args *ta)	1028	prepare_schedule (struct transfer_args *ta)
908	{	1029	{
909	SV current, prev, *next;	1030	SV prev_sv, next_sv;
		1031
		1032	for (;;)
		1033	{
		1034	LOCK;
		1035	next_sv = coro_deq (PRIO_MIN);
		1036
		1037	/* nothing to schedule: call the idle handler */
		1038	if (!next_sv)
		1039	{
		1040	dSP;
		1041	UNLOCK;
		1042
		1043	ENTER;
		1044	SAVETMPS;
		1045
		1046	PUSHMARK (SP);
		1047	PUTBACK;
		1048	call_sv (get_sv ("Coro::idle", FALSE), G_DISCARD);
		1049
		1050	FREETMPS;
		1051	LEAVE;
		1052	continue;
		1053	}
		1054
		1055	ta->next = SvSTATE (next_sv);
		1056
		1057	/* cannot transfer to destroyed coros, skip and look for next */
		1058	if (ta->next->flags & CF_DESTROYED)
		1059	{
		1060	UNLOCK;
		1061	SvREFCNT_dec (next_sv);
		1062	/* coro_nready is already taken care of by destroy */
		1063	continue;
		1064	}
		1065
		1066	--coro_nready;
		1067	UNLOCK;
		1068	break;
		1069	}
		1070
		1071	/* free this only after the transfer */
		1072	prev_sv = SvRV (coro_current);
		1073	SvRV_set (coro_current, next_sv);
		1074	ta->prev = SvSTATE (prev_sv);
		1075
		1076	assert (ta->next->flags & CF_READY);
		1077	ta->next->flags &= ~CF_READY;
910		1078
911	LOCK;	1079	LOCK;
912
913	current = GvSV (coro_current);
914
915	for (;;)
916	{
917	LOCK;
918
919	next = coro_deq (aTHX_ PRIO_MIN);
920
921	if (next)
922	break;
923
924	UNLOCK;
925
926	{
927	dSP;
928
929	ENTER;
930	SAVETMPS;
931
932	PUSHMARK (SP);
933	PUTBACK;
934	call_sv (GvSV (coro_idle), G_DISCARD);
935
936	FREETMPS;
937	LEAVE;
938	}
939	}
940
941	prev = SvRV (current);
942	SvRV (current) = next;
943
944	/* free this only after the transfer */
945	free_coro_mortal ();	1080	free_coro_mortal ();
946	coro_mortal = prev;	1081	coro_mortal = prev_sv;
947
948	ta->prev = SvSTATE (prev);
949	ta->next = SvSTATE (next);
950	ta->flags = TRANSFER_SAVE_ALL;
951
952	UNLOCK;	1082	UNLOCK;
953	}	1083	}
954		1084
955	static void	1085	static void
956	prepare_cede (aTHX_ struct transfer_args *ta)	1086	prepare_cede (struct transfer_args *ta)
957	{	1087	{
958	LOCK;	1088	api_ready (coro_current);
959	coro_enq (aTHX_ SvREFCNT_inc (SvRV (GvSV (coro_current))));
960	UNLOCK;
961
962	prepare_schedule (ta);	1089	prepare_schedule (ta);
963	}	1090	}
964		1091
		1092	static int
		1093	prepare_cede_notself (struct transfer_args *ta)
		1094	{
		1095	if (coro_nready)
		1096	{
		1097	SV *prev = SvRV (coro_current);
		1098	prepare_schedule (ta);
		1099	api_ready (prev);
		1100	return 1;
		1101	}
		1102	else
		1103	return 0;
		1104	}
		1105
965	static void	1106	static void
966	api_schedule (void)	1107	api_schedule (void)
967	{	1108	{
968	dTHX;
969	struct transfer_args ta;	1109	struct transfer_args ta;
970		1110
971	prepare_schedule (&ta);	1111	prepare_schedule (&ta);
972	TRANSFER (ta);	1112	TRANSFER (ta);
973	}	1113	}
974		1114
975	static void	1115	static int
976	api_cede (void)	1116	api_cede (void)
977	{	1117	{
978	dTHX;
979	struct transfer_args ta;	1118	struct transfer_args ta;
980		1119
981	prepare_cede (&ta);	1120	prepare_cede (&ta);
		1121
		1122	if (ta.prev != ta.next)
		1123	{
982	TRANSFER (ta);	1124	TRANSFER (ta);
		1125	return 1;
		1126	}
		1127	else
		1128	return 0;
		1129	}
		1130
		1131	static int
		1132	api_cede_notself (void)
		1133	{
		1134	struct transfer_args ta;
		1135
		1136	if (prepare_cede_notself (&ta))
		1137	{
		1138	TRANSFER (ta);
		1139	return 1;
		1140	}
		1141	else
		1142	return 0;
983	}	1143	}
984		1144
985	MODULE = Coro::State PACKAGE = Coro::State	1145	MODULE = Coro::State PACKAGE = Coro::State
986		1146
987	PROTOTYPES: DISABLE	1147	PROTOTYPES: DISABLE
…		…
993	#endif	1153	#endif
994	BOOT_PAGESIZE;	1154	BOOT_PAGESIZE;
995		1155
996	coro_state_stash = gv_stashpv ("Coro::State", TRUE);	1156	coro_state_stash = gv_stashpv ("Coro::State", TRUE);
997		1157
998	newCONSTSUB (coro_state_stash, "SAVE_DEFAV", newSViv (TRANSFER_SAVE_DEFAV));	1158	newCONSTSUB (coro_state_stash, "SAVE_DEFAV", newSViv (CORO_SAVE_DEFAV));
999	newCONSTSUB (coro_state_stash, "SAVE_DEFSV", newSViv (TRANSFER_SAVE_DEFSV));	1159	newCONSTSUB (coro_state_stash, "SAVE_DEFSV", newSViv (CORO_SAVE_DEFSV));
1000	newCONSTSUB (coro_state_stash, "SAVE_ERRSV", newSViv (TRANSFER_SAVE_ERRSV));	1160	newCONSTSUB (coro_state_stash, "SAVE_ERRSV", newSViv (CORO_SAVE_ERRSV));
		1161	newCONSTSUB (coro_state_stash, "SAVE_IRSSV", newSViv (CORO_SAVE_IRSSV));
		1162	newCONSTSUB (coro_state_stash, "SAVE_ALL", newSViv (CORO_SAVE_ALL));
1001		1163
1002	main_mainstack = PL_mainstack;	1164	main_mainstack = PL_mainstack;
1003		1165
1004	coroapi.ver = CORO_API_VERSION;	1166	coroapi.ver = CORO_API_VERSION;
1005	coroapi.transfer = api_transfer;	1167	coroapi.transfer = api_transfer;
1006
1007	Newz (0, main_stack, 1, coro_stack);
1008	main_stack->idle_sp = (void *)-1;
1009		1168
1010	assert (("PRIO_NORMAL must be 0", !PRIO_NORMAL));	1169	assert (("PRIO_NORMAL must be 0", !PRIO_NORMAL));
1011	}	1170	}
1012		1171
1013	SV *	1172	SV *
…		…
1018	HV *hv;	1177	HV *hv;
1019	int i;	1178	int i;
1020		1179
1021	Newz (0, coro, 1, struct coro);	1180	Newz (0, coro, 1, struct coro);
1022	coro->args = newAV ();	1181	coro->args = newAV ();
		1182	coro->save = CORO_SAVE_ALL;
		1183	coro->flags = CF_NEW;
1023		1184
1024	hv = newHV ();	1185	hv = newHV ();
1025	sv_magicext ((SV )hv, 0, PERL_MAGIC_ext, &coro_state_vtbl, (char )coro, 0)->mg_flags \|= MGf_DUP;	1186	sv_magicext ((SV )hv, 0, PERL_MAGIC_ext, &coro_state_vtbl, (char )coro, 0)->mg_flags \|= MGf_DUP;
1026	RETVAL = sv_bless (newRV_noinc ((SV *)hv), gv_stashpv (klass, 1));	1187	RETVAL = sv_bless (newRV_noinc ((SV *)hv), gv_stashpv (klass, 1));
1027		1188
1028	for (i = 1; i < items; i++)	1189	for (i = 1; i < items; i++)
1029	av_push (coro->args, newSVsv (ST (i)));	1190	av_push (coro->args, newSVsv (ST (i)));
1030
1031	coro->stack = main_stack;
1032	/coro->mainstack = 0; //actual work is done inside transfer /
1033	/coro->stack = 0;/
1034	}	1191	}
1035	OUTPUT:	1192	OUTPUT:
1036	RETVAL	1193	RETVAL
1037		1194
		1195	int
		1196	save (SV *coro, int new_save = -1)
		1197	CODE:
		1198	RETVAL = api_save (coro, new_save);
		1199	OUTPUT:
		1200	RETVAL
		1201
1038	void	1202	void
1039	transfer (...)	1203	_set_stacklevel (...)
1040	ALIAS:	1204	ALIAS:
1041	Coro::schedule = 1	1205	Coro::State::transfer = 1
1042	Coro::cede = 2	1206	Coro::schedule = 2
1043	_set_stacklevel = 3	1207	Coro::cede = 3
		1208	Coro::cede_notself = 4
1044	CODE:	1209	CODE:
1045	{	1210	{
1046	struct transfer_args ta;	1211	struct transfer_args ta;
1047		1212
1048	switch (ix)	1213	switch (ix)
1049	{	1214	{
1050	case 0:	1215	case 0:
1051	if (items != 3)	1216	ta.prev = (struct coro )INT2PTR (coro_cctx , SvIV (ST (0)));
1052	croak ("Coro::State::transfer(prev,next,flags) expects three arguments, not %d", items);	1217	ta.next = 0;
1053
1054	prepare_transfer (&ta, ST (0), ST (1), SvIV (ST (2)));
1055	break;	1218	break;
1056		1219
1057	case 1:	1220	case 1:
		1221	if (items != 2)
		1222	croak ("Coro::State::transfer (prev,next) expects two arguments, not %d", items);
		1223
		1224	prepare_transfer (&ta, ST (0), ST (1));
		1225	break;
		1226
		1227	case 2:
1058	prepare_schedule (&ta);	1228	prepare_schedule (&ta);
1059	break;	1229	break;
1060		1230
1061	case 2:	1231	case 3:
1062	prepare_cede (&ta);	1232	prepare_cede (&ta);
1063	break;	1233	break;
1064		1234
1065	case 3:	1235	case 4:
1066	ta.prev = (struct coro )INT2PTR (coro_stack , SvIV (ST (0)));	1236	if (!prepare_cede_notself (&ta))
1067	ta.next = 0;	1237	XSRETURN_EMPTY;
1068	ta.flags = TRANSFER_SET_STACKLEVEL;	1238
1069	break;	1239	break;
1070	}	1240	}
1071		1241
		1242	BARRIER;
1072	TRANSFER (ta);	1243	TRANSFER (ta);
1073	}
1074		1244
1075	void	1245	if (GIMME_V != G_VOID && ta.next != ta.prev)
1076	_clone_state_from (SV dst, SV src)	1246	XSRETURN_YES;
		1247	}
		1248
		1249	bool
		1250	_destroy (SV *coro_sv)
1077	CODE:	1251	CODE:
1078	{	1252	RETVAL = coro_state_destroy (SvSTATE (coro_sv));
1079	struct coro *coro_src = SvSTATE (src);	1253	OUTPUT:
1080		1254	RETVAL
1081	sv_unmagic (SvRV (dst), PERL_MAGIC_ext);
1082
1083	++coro_src->refcnt;
1084	sv_magicext (SvRV (dst), 0, PERL_MAGIC_ext, &coro_state_vtbl, (char *)coro_src, 0)->mg_flags \|= MGf_DUP;
1085	}
1086
1087	void
1088	_nonlocal_goto (IV nextop)
1089	CODE:
1090	/* uuh, somebody will kill me again for this */
1091	PL_op->op_next = INT2PTR (OP *, nextop);
1092		1255
1093	void	1256	void
1094	_exit (code)	1257	_exit (code)
1095	int code	1258	int code
1096	PROTOTYPE: $	1259	PROTOTYPE: $
1097	CODE:	1260	CODE:
1098	_exit (code);	1261	_exit (code);
1099		1262
1100	MODULE = Coro::State PACKAGE = Coro::Cont	1263	int
		1264	cctx_count ()
		1265	CODE:
		1266	RETVAL = cctx_count;
		1267	OUTPUT:
		1268	RETVAL
1101		1269
1102	void	1270	int
1103	yield (...)	1271	cctx_idle ()
1104	PROTOTYPE: @	1272	CODE:
1105	CODE:	1273	RETVAL = cctx_idle;
1106	{	1274	OUTPUT:
1107	SV *yieldstack;	1275	RETVAL
1108	SV *sv;
1109	AV *defav = GvAV (PL_defgv);
1110	struct coro prev, next;
1111
1112	yieldstack = *hv_fetch (
1113	(HV *)SvRV (GvSV (coro_current)),
1114	"yieldstack", sizeof ("yieldstack") - 1,
1115	0
1116	);
1117
1118	/* set up @_ -- ugly */
1119	av_clear (defav);
1120	av_fill (defav, items - 1);
1121	while (items--)
1122	av_store (defav, items, SvREFCNT_inc (ST(items)));
1123
1124	sv = av_pop ((AV *)SvRV (yieldstack));
1125	prev = SvSTATE (av_fetch ((AV )SvRV (sv), 0, 0));
1126	next = SvSTATE (av_fetch ((AV )SvRV (sv), 1, 0));
1127	SvREFCNT_dec (sv);
1128
1129	coro_state_transfer (aTHX_ prev, next, 0);
1130	}
1131		1276
1132	MODULE = Coro::State PACKAGE = Coro	1277	MODULE = Coro::State PACKAGE = Coro
1133		1278
1134	BOOT:	1279	BOOT:
1135	{	1280	{
…		…
1142	newCONSTSUB (coro_stash, "PRIO_NORMAL", newSViv (PRIO_NORMAL));	1287	newCONSTSUB (coro_stash, "PRIO_NORMAL", newSViv (PRIO_NORMAL));
1143	newCONSTSUB (coro_stash, "PRIO_LOW", newSViv (PRIO_LOW));	1288	newCONSTSUB (coro_stash, "PRIO_LOW", newSViv (PRIO_LOW));
1144	newCONSTSUB (coro_stash, "PRIO_IDLE", newSViv (PRIO_IDLE));	1289	newCONSTSUB (coro_stash, "PRIO_IDLE", newSViv (PRIO_IDLE));
1145	newCONSTSUB (coro_stash, "PRIO_MIN", newSViv (PRIO_MIN));	1290	newCONSTSUB (coro_stash, "PRIO_MIN", newSViv (PRIO_MIN));
1146		1291
1147	coro_current = gv_fetchpv ("Coro::current", TRUE, SVt_PV);	1292	coro_current = get_sv ("Coro::current", FALSE);
1148	coro_idle = gv_fetchpv ("Coro::idle" , TRUE, SVt_PV);	1293	SvREADONLY_on (coro_current);
1149		1294
1150	for (i = PRIO_MAX - PRIO_MIN + 1; i--; )	1295	for (i = PRIO_MAX - PRIO_MIN + 1; i--; )
1151	coro_ready[i] = newAV ();	1296	coro_ready[i] = newAV ();
1152		1297
1153	{	1298	{
1154	SV *sv = perl_get_sv("Coro::API", 1);	1299	SV *sv = perl_get_sv("Coro::API", 1);
1155		1300
1156	coroapi.schedule = api_schedule;	1301	coroapi.schedule = api_schedule;
		1302	coroapi.save = api_save;
1157	coroapi.cede = api_cede;	1303	coroapi.cede = api_cede;
		1304	coroapi.cede_notself = api_cede_notself;
1158	coroapi.ready = api_ready;	1305	coroapi.ready = api_ready;
		1306	coroapi.is_ready = api_is_ready;
1159	coroapi.nready = &coro_nready;	1307	coroapi.nready = &coro_nready;
1160	coroapi.current = coro_current;	1308	coroapi.current = coro_current;
1161		1309
1162	GCoroAPI = &coroapi;	1310	GCoroAPI = &coroapi;
1163	sv_setiv (sv, (IV)&coroapi);	1311	sv_setiv (sv, (IV)&coroapi);
1164	SvREADONLY_on (sv);	1312	SvREADONLY_on (sv);
1165	}	1313	}
1166	}	1314	}
		1315
		1316	void
		1317	_set_current (SV *current)
		1318	PROTOTYPE: $
		1319	CODE:
		1320	SvREFCNT_dec (SvRV (coro_current));
		1321	SvRV_set (coro_current, SvREFCNT_inc (SvRV (current)));
1167		1322
1168	int	1323	int
1169	prio (Coro::State coro, int newprio = 0)	1324	prio (Coro::State coro, int newprio = 0)
1170	ALIAS:	1325	ALIAS:
1171	nice = 1	1326	nice = 1
…		…
1174	RETVAL = coro->prio;	1329	RETVAL = coro->prio;
1175		1330
1176	if (items > 1)	1331	if (items > 1)
1177	{	1332	{
1178	if (ix)	1333	if (ix)
1179	newprio += coro->prio;	1334	newprio = coro->prio - newprio;
1180		1335
1181	if (newprio < PRIO_MIN) newprio = PRIO_MIN;	1336	if (newprio < PRIO_MIN) newprio = PRIO_MIN;
1182	if (newprio > PRIO_MAX) newprio = PRIO_MAX;	1337	if (newprio > PRIO_MAX) newprio = PRIO_MAX;
1183		1338
1184	coro->prio = newprio;	1339	coro->prio = newprio;
1185	}	1340	}
1186	}	1341	}
		1342	OUTPUT:
		1343	RETVAL
1187		1344
1188	void	1345	SV *
1189	ready (SV *self)	1346	ready (SV *self)
1190	PROTOTYPE: $	1347	PROTOTYPE: $
1191	CODE:	1348	CODE:
1192	api_ready (self);	1349	RETVAL = boolSV (api_ready (self));
		1350	OUTPUT:
		1351	RETVAL
		1352
		1353	SV *
		1354	is_ready (SV *self)
		1355	PROTOTYPE: $
		1356	CODE:
		1357	RETVAL = boolSV (api_is_ready (self));
		1358	OUTPUT:
		1359	RETVAL
1193		1360
1194	int	1361	int
1195	nready (...)	1362	nready (...)
1196	PROTOTYPE:	1363	PROTOTYPE:
1197	CODE:	1364	CODE:
…		…
1203		1370
1204	SV *	1371	SV *
1205	_get_state ()	1372	_get_state ()
1206	CODE:	1373	CODE:
1207	{	1374	{
1208	struct {	1375	struct io_state *data;
1209	int errorno;
1210	int laststype;
1211	int laststatval;
1212	Stat_t statcache;
1213	} data;
1214		1376
		1377	RETVAL = newSV (sizeof (struct io_state));
		1378	data = (struct io_state *)SvPVX (RETVAL);
		1379	SvCUR_set (RETVAL, sizeof (struct io_state));
		1380	SvPOK_only (RETVAL);
		1381
1215	data.errorno = errno;	1382	data->errorno = errno;
1216	data.laststype = PL_laststype;	1383	data->laststype = PL_laststype;
1217	data.laststatval = PL_laststatval;	1384	data->laststatval = PL_laststatval;
1218	data.statcache = PL_statcache;	1385	data->statcache = PL_statcache;
1219
1220	RETVAL = newSVpvn ((char *)&data, sizeof data);
1221	}	1386	}
1222	OUTPUT:	1387	OUTPUT:
1223	RETVAL	1388	RETVAL
1224		1389
1225	void	1390	void
1226	_set_state (char *data_)	1391	_set_state (char *data_)
1227	PROTOTYPE: $	1392	PROTOTYPE: $
1228	CODE:	1393	CODE:
1229	{	1394	{
1230	struct {	1395	struct io_state data = (void )data_;
1231	int errorno;
1232	int laststype;
1233	int laststatval;
1234	Stat_t statcache;
1235	} data = (void )data_;
1236		1396
1237	errno = data->errorno;	1397	errno = data->errorno;
1238	PL_laststype = data->laststype;	1398	PL_laststype = data->laststype;
1239	PL_laststatval = data->laststatval;	1399	PL_laststatval = data->laststatval;
1240	PL_statcache = data->statcache;	1400	PL_statcache = data->statcache;
1241	}	1401	}
		1402

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Comparing Coro/Coro/State.xs (file contents): Revision 1.93 by root, Sun Nov 26 03:22:50 2006 UTC vs. Revision 1.142 by root, Tue Feb 13 19:21:29 2007 UTC

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Comparing Coro/Coro/State.xs (file contents):
Revision 1.93 by root, Sun Nov 26 03:22:50 2006 UTC vs.
Revision 1.142 by root, Tue Feb 13 19:21:29 2007 UTC