[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 1.144 by root, Sun Mar 4 11:45:23 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 CORO_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 CORO_STACKGUARD
37	#endif
38
39	#ifndef STACKGUARD
40	# define STACKGUARD 0
41	#endif
42
43	#ifdef HAVE_MMAP
44	# include <unistd.h>
45	# include <sys/mman.h>
46	# ifndef MAP_ANONYMOUS
47	# ifdef MAP_ANON
48	# define MAP_ANONYMOUS MAP_ANON
49	# else
50	# undef HAVE_MMAP
51	# endif
52	# endif	80	#endif
53	# include <limits.h>	81
54	# ifndef PAGESIZE	82	#ifndef CORO_STACKGUARD
55	# define PAGESIZE pagesize	83	# define CORO_STACKGUARD 0
56	# define BOOT_PAGESIZE pagesize = sysconf (_SC_PAGESIZE)
57	static long pagesize;
58	# else
59	# define BOOT_PAGESIZE
60	# endif	84	#endif
		85
		86	/* prefer perl internal functions over our own? */
		87	#ifndef CORO_PREFER_PERL_FUNCTIONS
		88	# define CORO_PREFER_PERL_FUNCTIONS 0
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	void idle_sp; / original stacklevel when coroutine was created */	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 */
		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 */
		148	JMPENV *top_env;
100	coro_context cctx;	149	coro_context cctx;
101	JMPENV *top_env;
102	} coro_stack;
103		150
104	/* the (fake) coro_stack representing the main program */	151	int inuse;
105	static coro_stack *main_stack;	152
		153	#if CORO_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	};
106		164
107	/* this is a structure representing a perl-level coroutine */	165	/* this is a structure representing a perl-level coroutine */
108	struct coro {	166	struct coro {
109	/* the c coroutine allocated to this perl coroutine, if any */	167	/* the c coroutine allocated to this perl coroutine, if any */
110	coro_stack *stack;	168	coro_cctx *cctx;
111		169
112	/* data associated with this coroutine (initial args) */	170	/* data associated with this coroutine (initial args) */
113	AV *args;	171	AV *args;
114	int refcnt;	172	int refcnt;
		173	int save; /* CORO_SAVE flags */
		174	int flags; /* CF_ flags */
115		175
116	/* optionally saved, might be zero */	176	/* optionally saved, might be zero */
117	AV *defav;	177	AV defav; / @_ */
118	SV *defsv;	178	SV defsv; / $_ */
119	SV *errsv;	179	SV errsv; / $@ */
		180	SV irssv; / $/ */
		181	SV irssv_sv; / real $/ cache */
120		182
121	/* saved global state not related to stacks */	183	#define VAR(name,type) type name;
122	U8 dowarn;	184	# include "state.h"
123	I32 in_eval;	185	#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		186
155	/* coro process data */	187	/* coro process data */
156	int prio;	188	int prio;
157	};	189	};
158		190
159	typedef struct coro *Coro__State;	191	typedef struct coro *Coro__State;
160	typedef struct coro *Coro__State_or_hashref;	192	typedef struct coro *Coro__State_or_hashref;
161		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
162	static AV *	210	static AV *
163	coro_clone_padlist (pTHX_ CV *cv)	211	coro_clone_padlist (CV *cv)
164	{	212	{
165	AV *padlist = CvPADLIST (cv);	213	AV *padlist = CvPADLIST (cv);
166	AV newpadlist, newpad;	214	AV newpadlist, newpad;
167		215
168	newpadlist = newAV ();	216	newpadlist = newAV ();
169	AvREAL_off (newpadlist);	217	AvREAL_off (newpadlist);
170	#if PERL_VERSION < 9	218	#if PERL_VERSION_ATLEAST (5,9,0)
		219	Perl_pad_push (aTHX_ padlist, AvFILLp (padlist) + 1);
		220	#else
171	Perl_pad_push (aTHX_ padlist, AvFILLp (padlist) + 1, 1);	221	Perl_pad_push (aTHX_ padlist, AvFILLp (padlist) + 1, 1);
172	#else
173	Perl_pad_push (aTHX_ padlist, AvFILLp (padlist) + 1);
174	#endif	222	#endif
175	newpad = (AV *)AvARRAY (padlist)[AvFILLp (padlist)];	223	newpad = (AV *)AvARRAY (padlist)[AvFILLp (padlist)];
176	--AvFILLp (padlist);	224	--AvFILLp (padlist);
177		225
178	av_store (newpadlist, 0, SvREFCNT_inc (*av_fetch (padlist, 0, FALSE)));	226	av_store (newpadlist, 0, SvREFCNT_inc (*av_fetch (padlist, 0, FALSE)));
…		…
180		228
181	return newpadlist;	229	return newpadlist;
182	}	230	}
183		231
184	static void	232	static void
185	free_padlist (pTHX_ AV *padlist)	233	free_padlist (AV *padlist)
186	{	234	{
187	/* may be during global destruction */	235	/* may be during global destruction */
188	if (SvREFCNT (padlist))	236	if (SvREFCNT (padlist))
189	{	237	{
190	I32 i = AvFILLp (padlist);	238	I32 i = AvFILLp (padlist);
…		…
211	AV *padlist;	259	AV *padlist;
212	AV av = (AV )mg->mg_obj;	260	AV av = (AV )mg->mg_obj;
213		261
214	/* casting is fun. */	262	/* casting is fun. */
215	while (&PL_sv_undef != (SV )(padlist = (AV )av_pop (av)))	263	while (&PL_sv_undef != (SV )(padlist = (AV )av_pop (av)))
216	free_padlist (aTHX_ padlist);	264	free_padlist (padlist);
217		265
218	SvREFCNT_dec (av);	266	SvREFCNT_dec (av);
219		267
220	return 0;	268	return 0;
221	}	269	}
222		270
223	#define PERL_MAGIC_coro PERL_MAGIC_ext	271	#define PERL_MAGIC_coro PERL_MAGIC_ext
224		272
225	static MGVTBL vtbl_coro = {0, 0, 0, 0, coro_cv_free};	273	static MGVTBL vtbl_coro = {0, 0, 0, 0, coro_cv_free};
226		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
227	/* the next two functions merely cache the padlists */	282	/* the next two functions merely cache the padlists */
228	static void	283	static void
229	get_padlist (pTHX_ CV *cv)	284	get_padlist (CV *cv)
230	{	285	{
231	MAGIC mg = mg_find ((SV )cv, PERL_MAGIC_coro);	286	MAGIC *mg = CORO_MAGIC (cv);
		287	AV *av;
232		288
233	if (mg && AvFILLp ((AV *)mg->mg_obj) >= 0)	289	if (mg && AvFILLp ((av = (AV *)mg->mg_obj)) >= 0)
234	CvPADLIST (cv) = (AV )av_pop ((AV )mg->mg_obj);	290	CvPADLIST (cv) = (AV *)AvARRAY (av)[AvFILLp (av)--];
235	else	291	else
236	{	292	{
237	#if 0	293	#if CORO_PREFER_PERL_FUNCTIONS
238	/* this should work - but it doesn't :( */	294	/* this is probably cleaner, but also slower? */
239	CV *cp = Perl_cv_clone (aTHX_ cv);	295	CV *cp = Perl_cv_clone (cv);
240	CvPADLIST (cv) = CvPADLIST (cp);	296	CvPADLIST (cv) = CvPADLIST (cp);
241	CvPADLIST (cp) = 0;	297	CvPADLIST (cp) = 0;
242	SvREFCNT_dec (cp);	298	SvREFCNT_dec (cp);
243	#else	299	#else
244	CvPADLIST (cv) = coro_clone_padlist (aTHX_ cv);	300	CvPADLIST (cv) = coro_clone_padlist (cv);
245	#endif	301	#endif
246	}	302	}
247	}	303	}
248		304
249	static void	305	static void
250	put_padlist (pTHX_ CV *cv)	306	put_padlist (CV *cv)
251	{	307	{
252	MAGIC mg = mg_find ((SV )cv, PERL_MAGIC_coro);	308	MAGIC *mg = CORO_MAGIC (cv);
		309	AV *av;
253		310
254	if (!mg)	311	if (!mg)
255	{	312	{
256	sv_magic ((SV *)cv, 0, PERL_MAGIC_coro, 0, 0);	313	sv_magic ((SV *)cv, 0, PERL_MAGIC_coro, 0, 0);
257	mg = mg_find ((SV *)cv, PERL_MAGIC_coro);	314	mg = mg_find ((SV *)cv, PERL_MAGIC_coro);
258	mg->mg_virtual = &vtbl_coro;	315	mg->mg_virtual = &vtbl_coro;
259	mg->mg_obj = (SV *)newAV ();	316	mg->mg_obj = (SV *)newAV ();
260	}	317	}
261		318
262	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);
263	}	325	}
		326
		327	/ load & save, init *****************************************************/
264		328
265	#define SB do {	329	#define SB do {
266	#define SE } while (0)	330	#define SE } while (0)
267		331
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	332	#define REPLACE_SV(sv,val) SB SvREFCNT_dec (sv); (sv) = (val); (val) = 0; SE
272		333
273	static void	334	static void
274	load_state(pTHX_ Coro__State c)	335	load_perl (Coro__State c)
275	{	336	{
276	PL_dowarn = c->dowarn;	337	#define VAR(name,type) PL_ ## name = c->name;
277	PL_in_eval = c->in_eval;	338	# include "state.h"
278		339	#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		340
310	if (c->defav) REPLACE_SV (GvAV (PL_defgv), c->defav);	341	if (c->defav) REPLACE_SV (GvAV (PL_defgv), c->defav);
311	if (c->defsv) REPLACE_SV (DEFSV , c->defsv);	342	if (c->defsv) REPLACE_SV (DEFSV , c->defsv);
312	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	}
313		355
314	{	356	{
315	dSP;	357	dSP;
316	CV *cv;	358	CV *cv;
317		359
318	/* now do the ugly restore mess */	360	/* now do the ugly restore mess */
319	while ((cv = (CV *)POPs))	361	while ((cv = (CV *)POPs))
320	{	362	{
321	AV padlist = (AV )POPs;
322
323	if (padlist)
324	{
325	put_padlist (aTHX_ cv); /* mark this padlist as available */	363	put_padlist (cv); /* mark this padlist as available */
326	CvPADLIST(cv) = padlist;	364	CvDEPTH (cv) = PTR2IV (POPs);
327	}	365	CvPADLIST (cv) = (AV *)POPs;
328
329	++CvDEPTH(cv);
330	}	366	}
331		367
332	PUTBACK;	368	PUTBACK;
333	}	369	}
		370	assert (!PL_comppad \|\| AvARRAY (PL_comppad));//D
334	}	371	}
335		372
336	static void	373	static void
337	save_state(pTHX_ Coro__State c, int flags)	374	save_perl (Coro__State c)
338	{	375	{
		376	assert (!PL_comppad \|\| AvARRAY (PL_comppad));//D
339	{	377	{
340	dSP;	378	dSP;
341	I32 cxix = cxstack_ix;	379	I32 cxix = cxstack_ix;
342	PERL_CONTEXT *ccstk = cxstack;	380	PERL_CONTEXT *ccstk = cxstack;
343	PERL_SI *top_si = PL_curstackinfo;	381	PERL_SI *top_si = PL_curstackinfo;
…		…
345	/*	383	/*
346	* 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
347	* (and reinitialize) all cv's in the whole callchain :(	385	* (and reinitialize) all cv's in the whole callchain :(
348	*/	386	*/
349		387
		388	EXTEND (SP, 3 + 1);
350	PUSHs (Nullsv);	389	PUSHs (Nullsv);
351	/* this loop was inspired by pp_caller */	390	/* this loop was inspired by pp_caller */
352	for (;;)	391	for (;;)
353	{	392	{
354	while (cxix >= 0)	393	while (cxix >= 0)
355	{	394	{
356	PERL_CONTEXT *cx = &ccstk[cxix--];	395	PERL_CONTEXT *cx = &ccstk[cxix--];
357		396
358	if (CxTYPE(cx) == CXt_SUB)	397	if (CxTYPE (cx) == CXt_SUB)
359	{	398	{
360	CV *cv = cx->blk_sub.cv;	399	CV *cv = cx->blk_sub.cv;
		400
361	if (CvDEPTH(cv))	401	if (CvDEPTH (cv))
362	{	402	{
363	EXTEND (SP, CvDEPTH(cv)*2);	403	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));	404	PUSHs ((SV *)CvPADLIST (cv));
		405	PUSHs (INT2PTR (SV *, CvDEPTH (cv)));
373	PUSHs ((SV *)cv);	406	PUSHs ((SV *)cv);
374		407
		408	CvDEPTH (cv) = 0;
375	get_padlist (aTHX_ cv);	409	get_padlist (cv);
376	}	410	}
377	}	411	}
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	}	412	}
387		413
388	if (top_si->si_type == PERLSI_MAIN)	414	if (top_si->si_type == PERLSI_MAIN)
389	break;	415	break;
390		416
…		…
394	}	420	}
395		421
396	PUTBACK;	422	PUTBACK;
397	}	423	}
398		424
399	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;
400	c->defsv = flags & TRANSFER_SAVE_DEFSV ? SvREFCNT_inc (DEFSV) : 0;	426	c->defsv = c->save & CORO_SAVE_DEFSV ? SvREFCNT_inc (DEFSV) : 0;
401	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;
402		429
403	c->dowarn = PL_dowarn;	430	#define VAR(name,type)c->name = PL_ ## name;
404	c->in_eval = PL_in_eval;	431	# include "state.h"
405		432	#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	}	433	}
437		434
438	/*	435	/*
439	* allocate various perl stacks. This is an exact copy	436	* allocate various perl stacks. This is an exact copy
440	* of perl.c:init_stacks, except that it uses less memory	437	* of perl.c:init_stacks, except that it uses less memory
441	* on the (sometimes correct) assumption that coroutines do	438	* on the (sometimes correct) assumption that coroutines do
442	* not usually need a lot of stackspace.	439	* not usually need a lot of stackspace.
443	*/	440	*/
		441	#if CORO_PREFER_PERL_FUNCTIONS
		442	# define coro_init_stacks init_stacks
		443	#else
444	static void	444	static void
445	coro_init_stacks (pTHX)	445	coro_init_stacks ()
446	{	446	{
447	LOCK;
448
449	PL_curstackinfo = new_stackinfo(96, 1024/sizeof(PERL_CONTEXT) - 1);	447	PL_curstackinfo = new_stackinfo(128, 1024/sizeof(PERL_CONTEXT));
450	PL_curstackinfo->si_type = PERLSI_MAIN;	448	PL_curstackinfo->si_type = PERLSI_MAIN;
451	PL_curstack = PL_curstackinfo->si_stack;	449	PL_curstack = PL_curstackinfo->si_stack;
452	PL_mainstack = PL_curstack; /* remember in case we switch stacks */	450	PL_mainstack = PL_curstack; /* remember in case we switch stacks */
453		451
454	PL_stack_base = AvARRAY(PL_curstack);	452	PL_stack_base = AvARRAY(PL_curstack);
455	PL_stack_sp = PL_stack_base;	453	PL_stack_sp = PL_stack_base;
456	PL_stack_max = PL_stack_base + AvMAX(PL_curstack);	454	PL_stack_max = PL_stack_base + AvMAX(PL_curstack);
457		455
458	New(50,PL_tmps_stack,96,SV*);	456	New(50,PL_tmps_stack,128,SV*);
459	PL_tmps_floor = -1;	457	PL_tmps_floor = -1;
460	PL_tmps_ix = -1;	458	PL_tmps_ix = -1;
461	PL_tmps_max = 96;	459	PL_tmps_max = 128;
462		460
463	New(54,PL_markstack,16,I32);	461	New(54,PL_markstack,32,I32);
464	PL_markstack_ptr = PL_markstack;	462	PL_markstack_ptr = PL_markstack;
465	PL_markstack_max = PL_markstack + 16;	463	PL_markstack_max = PL_markstack + 32;
466		464
467	#ifdef SET_MARK_OFFSET	465	#ifdef SET_MARK_OFFSET
468	SET_MARK_OFFSET;	466	SET_MARK_OFFSET;
469	#endif	467	#endif
470		468
471	New(54,PL_scopestack,16,I32);	469	New(54,PL_scopestack,32,I32);
472	PL_scopestack_ix = 0;	470	PL_scopestack_ix = 0;
473	PL_scopestack_max = 16;	471	PL_scopestack_max = 32;
474		472
475	New(54,PL_savestack,96,ANY);	473	New(54,PL_savestack,64,ANY);
476	PL_savestack_ix = 0;	474	PL_savestack_ix = 0;
477	PL_savestack_max = 96;	475	PL_savestack_max = 64;
478		476
479	#if PERL_VERSION < 9	477	#if !PERL_VERSION_ATLEAST (5,9,0)
480	New(54,PL_retstack,8,OP*);	478	New(54,PL_retstack,16,OP*);
481	PL_retstack_ix = 0;	479	PL_retstack_ix = 0;
482	PL_retstack_max = 8;	480	PL_retstack_max = 16;
483	#endif	481	#endif
484
485	UNLOCK;
486	}	482	}
		483	#endif
487		484
488	/*	485	/*
489	* destroy the stacks, the callchain etc...	486	* destroy the stacks, the callchain etc...
490	*/	487	*/
491	static void	488	static void
492	destroy_stacks(pTHX)	489	coro_destroy_stacks ()
493	{	490	{
494	if (!IN_DESTRUCT)	491	if (!IN_DESTRUCT)
495	{	492	{
496	/* is this ugly, I ask? */	493	/* restore all saved variables and stuff */
497	LEAVE_SCOPE (0);	494	LEAVE_SCOPE (0);
		495	assert (PL_tmps_floor == -1);
498		496
499	/* sure it is, but more important: is it correct?? :/ */	497	/* free all temporaries */
500	FREETMPS;	498	FREETMPS;
		499	assert (PL_tmps_ix == -1);
501		500
		501	/* unwind all extra stacks */
502	/POPSTACK_TO (PL_mainstack);//D//use/	502	POPSTACK_TO (PL_mainstack);
		503
		504	/* unwind main stack */
		505	dounwind (-1);
503	}	506	}
504		507
505	while (PL_curstackinfo->si_next)	508	while (PL_curstackinfo->si_next)
506	PL_curstackinfo = PL_curstackinfo->si_next;	509	PL_curstackinfo = PL_curstackinfo->si_next;
507		510
508	while (PL_curstackinfo)	511	while (PL_curstackinfo)
509	{	512	{
510	PERL_SI *p = PL_curstackinfo->si_prev;	513	PERL_SI *p = PL_curstackinfo->si_prev;
511		514
512	{ /D//remove/
513	dSP;
514	SWITCHSTACK (PL_curstack, PL_curstackinfo->si_stack);
515	PUTBACK; /* possibly superfluous */
516	}
517
518	if (!IN_DESTRUCT)	515	if (!IN_DESTRUCT)
519	{
520	dounwind (-1);/D//remove/
521	SvREFCNT_dec (PL_curstackinfo->si_stack);	516	SvREFCNT_dec (PL_curstackinfo->si_stack);
522	}
523		517
524	Safefree (PL_curstackinfo->si_cxstack);	518	Safefree (PL_curstackinfo->si_cxstack);
525	Safefree (PL_curstackinfo);	519	Safefree (PL_curstackinfo);
526	PL_curstackinfo = p;	520	PL_curstackinfo = p;
527	}	521	}
528		522
529	Safefree (PL_tmps_stack);	523	Safefree (PL_tmps_stack);
530	Safefree (PL_markstack);	524	Safefree (PL_markstack);
531	Safefree (PL_scopestack);	525	Safefree (PL_scopestack);
532	Safefree (PL_savestack);	526	Safefree (PL_savestack);
533	#if PERL_VERSION < 9	527	#if !PERL_VERSION_ATLEAST (5,9,0)
534	Safefree (PL_retstack);	528	Safefree (PL_retstack);
535	#endif	529	#endif
536	}	530	}
		531
		532	/ coroutine stack handling **********************************************/
537		533
538	static void	534	static void
539	setup_coro (struct coro *coro)	535	setup_coro (struct coro *coro)
540	{	536	{
541	/*	537	/*
542	* emulate part of the perl startup here.	538	* emulate part of the perl startup here.
543	*/	539	*/
544	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	{
545	dSP;	587	dSP;
546	UNOP myop;	588	LOGOP myop;
547	SV sub_init = (SV )get_cv ("Coro::State::coro_init", FALSE);
548		589
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);	590	Zero (&myop, 1, LOGOP);
558	myop.op_next = Nullop;	591	myop.op_next = PL_op;
559	myop.op_flags = OPf_WANT_VOID;	592	myop.op_flags = OPf_WANT_VOID \| OPf_STACKED;
560		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;
561	PL_op = (OP *)&myop;	599	PL_op = (OP *)&myop;
562
563	PUSHMARK(SP);
564	XPUSHs (sub_init);
565	PUTBACK;
566	PL_op = PL_ppaddr[OP_ENTERSUB](aTHX);	600	PL_op = PL_ppaddr[OP_ENTERSUB](aTHX);
567	SPAGAIN;	601	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	}	602	}
581		603
582	static void	604	static void
583	coro_run (void *arg)	605	coro_run (void *arg)
584	{	606	{
		607	/* coro_run is the alternative tail of transfer(), so unlock here. */
		608	UNLOCK;
		609
585	/*	610	/*
586	* this is a _very_ stripped down perl interpreter ;)	611	* this is a _very_ stripped down perl interpreter ;)
587	*/	612	*/
588	dTHX;
589	PL_top_env = &PL_start_env;	613	PL_top_env = &PL_start_env;
590		614
591	UNLOCK;	615	/* inject call to cctx_init */
		616	prepare_cctx ((coro_cctx *)arg);
592		617
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 */	618	/* somebody will hit me for both perl_run and PL_restartop */
598	perl_run (aTHX_ PERL_GET_CONTEXT);	619	PL_restartop = PL_op;
		620	perl_run (PL_curinterp);
599		621
		622	fputs ("FATAL: C coroutine fell over the edge of the world, aborting. Did you call exit in a coroutine?\n", stderr);
600	abort ();	623	abort ();
601	}	624	}
602		625
603	static coro_stack *	626	static coro_cctx *
604	stack_new ()	627	cctx_new ()
605	{	628	{
606	coro_stack *stack;	629	coro_cctx *cctx;
607		630
		631	++cctx_count;
		632
608	New (0, stack, 1, coro_stack);	633	Newz (0, cctx, 1, coro_cctx);
609		634
610	#if HAVE_MMAP	635	#if HAVE_MMAP
611		636
612	stack->ssize = ((STACKSIZE * sizeof (long) + PAGESIZE - 1) / PAGESIZE + STACKGUARD) * PAGESIZE; /* mmap should do allocate-on-write for us */	637	cctx->ssize = ((CORO_STACKSIZE * sizeof (long) + PAGESIZE - 1) / PAGESIZE + CORO_STACKGUARD) * PAGESIZE;
		638	/* 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);	639	cctx->sptr = mmap (0, cctx->ssize, PROT_EXEC\|PROT_READ\|PROT_WRITE, MAP_PRIVATE\|MAP_ANONYMOUS, 0, 0);
614		640
615	if (stack->sptr == (void *)-1)	641	if (cctx->sptr != (void *)-1)
		642	{
		643	# if CORO_STACKGUARD
		644	mprotect (cctx->sptr, CORO_STACKGUARD * PAGESIZE, PROT_NONE);
		645	# endif
		646	REGISTER_STACK (
		647	cctx,
		648	CORO_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);
616	{	653	}
		654	else
		655	#endif
		656	{
		657	cctx->ssize = -CORO_STACKSIZE * (long)sizeof (long);
		658	New (0, cctx->sptr, CORO_STACKSIZE, long);
		659
		660	if (!cctx->sptr)
		661	{
617	perror ("FATAL: unable to mmap stack for coroutine");	662	perror ("FATAL: unable to allocate stack for coroutine");
618	_exit (EXIT_FAILURE);	663	_exit (EXIT_FAILURE);
619	}	664	}
620		665
621	mprotect (stack->sptr, STACKGUARD * PAGESIZE, PROT_NONE);	666	REGISTER_STACK (
		667	cctx,
		668	(char *)cctx->sptr,
		669	(char *)cctx->sptr - cctx->ssize
		670	);
622		671
623	#else	672	coro_create (&cctx->cctx, coro_run, (void *)cctx, cctx->sptr, -cctx->ssize);
624
625	stack->ssize = STACKSIZE * (long)sizeof (long);
626	New (0, stack->sptr, STACKSIZE, long);
627
628	if (!stack->sptr)
629	{	673	}
630	perror (stderr, "FATAL: unable to malloc stack for coroutine");
631	_exit (EXIT_FAILURE);
632	}
633		674
634	#endif
635
636	coro_create (&stack->cctx, coro_run, (void *)stack, stack->sptr, stack->ssize);
637
638	return stack;	675	return cctx;
639	}	676	}
640		677
641	static void	678	static void
642	stack_free (coro_stack *stack)	679	cctx_destroy (coro_cctx *cctx)
643	{	680	{
644	if (!stack \|\| stack == main_stack)	681	if (!cctx)
645	return;	682	return;
646		683
		684	--cctx_count;
		685
		686	#if CORO_USE_VALGRIND
		687	VALGRIND_STACK_DEREGISTER (cctx->valgrind_id);
		688	#endif
		689
647	#if HAVE_MMAP	690	#if HAVE_MMAP
		691	if (cctx->ssize > 0)
648	munmap (stack->sptr, stack->ssize);	692	munmap (cctx->sptr, cctx->ssize);
649	#else	693	else
		694	#endif
650	Safefree (stack->sptr);	695	Safefree (cctx->sptr);
651	#endif
652		696
653	Safefree (stack);	697	Safefree (cctx);
654	}	698	}
655		699
656	static coro_stack *stack_first;
657
658	static coro_stack *	700	static coro_cctx *
659	stack_get ()	701	cctx_get ()
660	{	702	{
661	coro_stack *stack;	703	coro_cctx *cctx;
662		704
663	if (stack_first)	705	if (cctx_first)
664	{	706	{
665	stack = stack_first;	707	cctx = cctx_first;
666	stack_first = stack->next;	708	cctx_first = cctx->next;
		709	--cctx_idle;
667	}	710	}
668	else	711	else
669	{	712	{
670	stack = stack_new ();	713	cctx = cctx_new ();
671	PL_op = PL_op->op_next;	714	PL_op = PL_op->op_next;
672	}	715	}
673		716
674	return stack;	717	return cctx;
675	}	718	}
676		719
677	static void	720	static void
678	stack_put (coro_stack *stack)	721	cctx_put (coro_cctx *cctx)
679	{	722	{
680	stack->next = stack_first;	723	/* free another cctx if overlimit */
681	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;
682	}	737	}
		738
		739	/ coroutine switching ***************************************************/
683		740
684	/* never call directly, always through the coro_state_transfer global variable */	741	/* never call directly, always through the coro_state_transfer global variable */
685	static void	742	static void NOINLINE
686	transfer_impl (pTHX_ struct coro prev, struct coro next, int flags)	743	transfer (struct coro prev, struct coro next)
687	{	744	{
688	dSTACKLEVEL;	745	dSTACKLEVEL;
689		746
690	/* sometimes transfer is only called to set idle_sp */	747	/* sometimes transfer is only called to set idle_sp */
691	if (flags == TRANSFER_SET_STACKLEVEL)	748	if (!next)
		749	{
692	((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	}
693	else if (prev != next)	753	else if (prev != next)
694	{	754	{
695	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;
696		778
697	LOCK;	779	LOCK;
698		780
699	if (next->mainstack)	781	if (next->flags & CF_NEW)
700	{	782	{
701	/* coroutine already started */	783	/* need to start coroutine */
702	SAVE (prev, flags);	784	next->flags &= ~CF_NEW;
703	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);
704	}	791	}
705	else	792	else
706	{	793	{
707	/* need to start coroutine */	794	/* coroutine already started */
708	/* first get rid of the old state */	795	save_perl (prev);
709	SAVE (prev, -1);	796	load_perl (next);
710	/* setup coroutine call */
711	setup_coro (next);
712	/* need a stack */
713	next->stack = 0;
714	}	797	}
715		798
716	prev__stack = prev->stack;	799	prev__cctx = prev->cctx;
717		800
718	/* possibly "free" the stack */	801	/* possibly "free" the cctx */
719	if (prev__stack->idle_sp == STACKLEVEL)	802	if (prev__cctx->idle_sp == STACKLEVEL)
720	{	803	{
721	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
722	prev->stack = 0;	807	prev->cctx = 0;
		808
		809	cctx_put (prev__cctx);
		810	prev__cctx->inuse = 0;
723	}	811	}
724		812
725	if (!next->stack)	813	if (!next->cctx)
726	next->stack = stack_get ();
727
728	if (prev__stack != next->stack)
729	{	814	{
730	prev__stack->top_env = PL_top_env;	815	next->cctx = cctx_get ();
731	PL_top_env = next->stack->top_env;	816	assert (!next->cctx->inuse);
732	coro_transfer (&prev__stack->cctx, &next->stack->cctx);	817	next->cctx->inuse = 1;
733	}	818	}
734		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
735	free_coro_mortal ();	827	free_coro_mortal ();
736
737	UNLOCK;	828	UNLOCK;
738	}	829	}
739	}	830	}
740		831
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	832	struct transfer_args
747	{	833	{
748	struct coro prev, next;	834	struct coro prev, next;
749	int flags;
750	};	835	};
751		836
752	#define TRANSFER(ta) coro_state_transfer ((ta).prev, (ta).next, (ta).flags)	837	#define TRANSFER(ta) transfer ((ta).prev, (ta).next)
753		838
		839	/ high level stuff ******************************************************/
		840
754	static void	841	static int
755	coro_state_destroy (struct coro *coro)	842	coro_state_destroy (struct coro *coro)
756	{	843	{
757	if (coro->refcnt--)	844	if (coro->flags & CF_DESTROYED)
758	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 */
759		859
760	if (coro->mainstack && coro->mainstack != main_mainstack)	860	if (coro->mainstack && coro->mainstack != main_mainstack)
761	{	861	{
762	struct coro temp;	862	struct coro temp;
763		863
764	SAVE (aTHX_ (&temp), TRANSFER_SAVE_ALL);	864	assert (!(coro->flags & CF_RUNNING));
765	LOAD (aTHX_ coro);
766		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
767	destroy_stacks (aTHX);	875	coro_destroy_stacks ();
768		876
769	LOAD ((&temp)); /* this will get rid of defsv etc.. */	877	load_perl (&temp); /* this will get rid of defsv etc.. */
770		878
771	coro->mainstack = 0;	879	coro->mainstack = 0;
772	}	880	}
773		881
774	stack_free (coro->stack);	882	cctx_destroy (coro->cctx);
775	SvREFCNT_dec (coro->args);	883	SvREFCNT_dec (coro->args);
776	Safefree (coro);	884
		885	return 1;
777	}	886	}
778		887
779	static int	888	static int
780	coro_state_clear (SV sv, MAGIC mg)	889	coro_state_free (pTHX_ SV sv, MAGIC mg)
781	{	890	{
782	struct coro coro = (struct coro )mg->mg_ptr;	891	struct coro coro = (struct coro )mg->mg_ptr;
783	mg->mg_ptr = 0;	892	mg->mg_ptr = 0;
784		893
		894	if (--coro->refcnt < 0)
		895	{
785	coro_state_destroy (coro);	896	coro_state_destroy (coro);
		897	Safefree (coro);
		898	}
786		899
787	return 0;	900	return 0;
788	}	901	}
789		902
790	static int	903	static int
791	coro_state_dup (MAGIC mg, CLONE_PARAMS params)	904	coro_state_dup (pTHX_ MAGIC mg, CLONE_PARAMS params)
792	{	905	{
793	struct coro coro = (struct coro )mg->mg_ptr;	906	struct coro coro = (struct coro )mg->mg_ptr;
794		907
795	++coro->refcnt;	908	++coro->refcnt;
796		909
797	return 0;	910	return 0;
798	}	911	}
799		912
800	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	};
801		923
802	static struct coro *	924	static struct coro *
803	SvSTATE (SV *coro)	925	SvSTATE (SV *coro)
804	{	926	{
805	HV *stash;	927	HV *stash;
…		…
814	/* very slow, but rare, check */	936	/* very slow, but rare, check */
815	if (!sv_derived_from (sv_2mortal (newRV_inc (coro)), "Coro::State"))	937	if (!sv_derived_from (sv_2mortal (newRV_inc (coro)), "Coro::State"))
816	croak ("Coro::State object required");	938	croak ("Coro::State object required");
817	}	939	}
818		940
819	mg = SvMAGIC (coro);	941	mg = CORO_MAGIC (coro);
820	assert (mg->mg_type == PERL_MAGIC_ext);
821	return (struct coro *)mg->mg_ptr;	942	return (struct coro *)mg->mg_ptr;
822	}	943	}
823		944
824	static void	945	static void
825	prepare_transfer (pTHX_ struct transfer_args ta, SV prev, SV *next, int flags)	946	prepare_transfer (struct transfer_args ta, SV prev_sv, SV *next_sv)
826	{	947	{
827	ta->prev = SvSTATE (prev);	948	ta->prev = SvSTATE (prev_sv);
828	ta->next = SvSTATE (next);	949	ta->next = SvSTATE (next_sv);
829	ta->flags = flags;
830	}	950	}
831		951
832	static void	952	static void
833	api_transfer (SV prev, SV next, int flags)	953	api_transfer (SV prev_sv, SV next_sv)
834	{	954	{
835	dTHX;
836	struct transfer_args ta;	955	struct transfer_args ta;
837		956
838	prepare_transfer (aTHX_ &ta, prev, next, flags);	957	prepare_transfer (&ta, prev_sv, next_sv);
839	TRANSFER (ta);	958	TRANSFER (ta);
840	}	959	}
841		960
		961	static int
		962	api_save (SV *coro_sv, int new_save)
		963	{
		964	struct coro *coro = SvSTATE (coro_sv);
		965	int old_save = coro->save;
		966
		967	if (new_save >= 0)
		968	coro->save = new_save;
		969
		970	return old_save;
		971	}
		972
842	/ Coro ******************************************************************/	973	/ Coro ******************************************************************/
843		974
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	975	static void
857	coro_enq (pTHX_ SV *sv)	976	coro_enq (SV *coro_sv)
858	{	977	{
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);	978	av_push (coro_ready [SvSTATE (coro_sv)->prio - PRIO_MIN], coro_sv);
867	coro_nready++;
868	}	979	}
869		980
870	static SV *	981	static SV *
871	coro_deq (pTHX_ int min_prio)	982	coro_deq (int min_prio)
872	{	983	{
873	int prio = PRIO_MAX - PRIO_MIN;	984	int prio = PRIO_MAX - PRIO_MIN;
874		985
875	min_prio -= PRIO_MIN;	986	min_prio -= PRIO_MIN;
876	if (min_prio < 0)	987	if (min_prio < 0)
877	min_prio = 0;	988	min_prio = 0;
878		989
879	for (prio = PRIO_MAX - PRIO_MIN + 1; --prio >= min_prio; )	990	for (prio = PRIO_MAX - PRIO_MIN + 1; --prio >= min_prio; )
880	if (AvFILLp (coro_ready [prio]) >= 0)	991	if (AvFILLp (coro_ready [prio]) >= 0)
881	{
882	coro_nready--;
883	return av_shift (coro_ready [prio]);	992	return av_shift (coro_ready [prio]);
884	}
885		993
886	return 0;	994	return 0;
887	}	995	}
888		996
889	static void	997	static int
890	api_ready (SV *coro)	998	api_ready (SV *coro_sv)
891	{	999	{
892	dTHX;	1000	struct coro *coro;
893		1001
894	if (SvROK (coro))	1002	if (SvROK (coro_sv))
895	coro = SvRV (coro);	1003	coro_sv = SvRV (coro_sv);
		1004
		1005	coro = SvSTATE (coro_sv);
		1006
		1007	if (coro->flags & CF_READY)
		1008	return 0;
		1009
		1010	coro->flags \|= CF_READY;
896		1011
897	LOCK;	1012	LOCK;
898	coro_enq (aTHX_ SvREFCNT_inc (coro));	1013	coro_enq (SvREFCNT_inc (coro_sv));
		1014	++coro_nready;
899	UNLOCK;	1015	UNLOCK;
900	}
901		1016
		1017	return 1;
		1018	}
		1019
902	static void	1020	static int
		1021	api_is_ready (SV *coro_sv)
		1022	{
		1023	return !!(SvSTATE (coro_sv)->flags & CF_READY);
		1024	}
		1025
		1026	static void
903	prepare_schedule (aTHX_ struct transfer_args *ta)	1027	prepare_schedule (struct transfer_args *ta)
904	{	1028	{
905	SV current, prev, *next;	1029	SV prev_sv, next_sv;
		1030
		1031	for (;;)
		1032	{
		1033	LOCK;
		1034	next_sv = coro_deq (PRIO_MIN);
		1035
		1036	/* nothing to schedule: call the idle handler */
		1037	if (!next_sv)
		1038	{
		1039	dSP;
		1040	UNLOCK;
		1041
		1042	ENTER;
		1043	SAVETMPS;
		1044
		1045	PUSHMARK (SP);
		1046	PUTBACK;
		1047	call_sv (get_sv ("Coro::idle", FALSE), G_DISCARD);
		1048
		1049	FREETMPS;
		1050	LEAVE;
		1051	continue;
		1052	}
		1053
		1054	ta->next = SvSTATE (next_sv);
		1055
		1056	/* cannot transfer to destroyed coros, skip and look for next */
		1057	if (ta->next->flags & CF_DESTROYED)
		1058	{
		1059	UNLOCK;
		1060	SvREFCNT_dec (next_sv);
		1061	/* coro_nready is already taken care of by destroy */
		1062	continue;
		1063	}
		1064
		1065	--coro_nready;
		1066	UNLOCK;
		1067	break;
		1068	}
		1069
		1070	/* free this only after the transfer */
		1071	prev_sv = SvRV (coro_current);
		1072	SvRV_set (coro_current, next_sv);
		1073	ta->prev = SvSTATE (prev_sv);
		1074
		1075	assert (ta->next->flags & CF_READY);
		1076	ta->next->flags &= ~CF_READY;
906		1077
907	LOCK;	1078	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 ();	1079	free_coro_mortal ();
942	coro_mortal = prev;	1080	coro_mortal = prev_sv;
943
944	ta->prev = SvSTATE (prev);
945	ta->next = SvSTATE (next);
946	ta->flags = TRANSFER_SAVE_ALL;
947
948	UNLOCK;	1081	UNLOCK;
949	}	1082	}
950		1083
951	static void	1084	static void
952	prepare_cede (aTHX_ struct transfer_args *ta)	1085	prepare_cede (struct transfer_args *ta)
953	{	1086	{
954	LOCK;	1087	api_ready (coro_current);
955	coro_enq (aTHX_ SvREFCNT_inc (SvRV (GvSV (coro_current))));
956	UNLOCK;
957
958	prepare_schedule (ta);	1088	prepare_schedule (ta);
959	}	1089	}
960		1090
		1091	static int
		1092	prepare_cede_notself (struct transfer_args *ta)
		1093	{
		1094	if (coro_nready)
		1095	{
		1096	SV *prev = SvRV (coro_current);
		1097	prepare_schedule (ta);
		1098	api_ready (prev);
		1099	return 1;
		1100	}
		1101	else
		1102	return 0;
		1103	}
		1104
961	static void	1105	static void
962	api_schedule (void)	1106	api_schedule (void)
963	{	1107	{
964	dTHX;
965	struct transfer_args ta;	1108	struct transfer_args ta;
966		1109
967	prepare_schedule (&ta);	1110	prepare_schedule (&ta);
968	TRANSFER (ta);	1111	TRANSFER (ta);
969	}	1112	}
970		1113
971	static void	1114	static int
972	api_cede (void)	1115	api_cede (void)
973	{	1116	{
974	dTHX;
975	struct transfer_args ta;	1117	struct transfer_args ta;
976		1118
977	prepare_cede (&ta);	1119	prepare_cede (&ta);
		1120
		1121	if (ta.prev != ta.next)
		1122	{
978	TRANSFER (ta);	1123	TRANSFER (ta);
		1124	return 1;
		1125	}
		1126	else
		1127	return 0;
		1128	}
		1129
		1130	static int
		1131	api_cede_notself (void)
		1132	{
		1133	struct transfer_args ta;
		1134
		1135	if (prepare_cede_notself (&ta))
		1136	{
		1137	TRANSFER (ta);
		1138	return 1;
		1139	}
		1140	else
		1141	return 0;
979	}	1142	}
980		1143
981	MODULE = Coro::State PACKAGE = Coro::State	1144	MODULE = Coro::State PACKAGE = Coro::State
982		1145
983	PROTOTYPES: DISABLE	1146	PROTOTYPES: DISABLE
…		…
989	#endif	1152	#endif
990	BOOT_PAGESIZE;	1153	BOOT_PAGESIZE;
991		1154
992	coro_state_stash = gv_stashpv ("Coro::State", TRUE);	1155	coro_state_stash = gv_stashpv ("Coro::State", TRUE);
993		1156
994	newCONSTSUB (coro_state_stash, "SAVE_DEFAV", newSViv (TRANSFER_SAVE_DEFAV));	1157	newCONSTSUB (coro_state_stash, "SAVE_DEFAV", newSViv (CORO_SAVE_DEFAV));
995	newCONSTSUB (coro_state_stash, "SAVE_DEFSV", newSViv (TRANSFER_SAVE_DEFSV));	1158	newCONSTSUB (coro_state_stash, "SAVE_DEFSV", newSViv (CORO_SAVE_DEFSV));
996	newCONSTSUB (coro_state_stash, "SAVE_ERRSV", newSViv (TRANSFER_SAVE_ERRSV));	1159	newCONSTSUB (coro_state_stash, "SAVE_ERRSV", newSViv (CORO_SAVE_ERRSV));
		1160	newCONSTSUB (coro_state_stash, "SAVE_IRSSV", newSViv (CORO_SAVE_IRSSV));
		1161	newCONSTSUB (coro_state_stash, "SAVE_ALL", newSViv (CORO_SAVE_ALL));
997		1162
998	main_mainstack = PL_mainstack;	1163	main_mainstack = PL_mainstack;
999		1164
1000	coroapi.ver = CORO_API_VERSION;	1165	coroapi.ver = CORO_API_VERSION;
1001	coroapi.transfer = api_transfer;	1166	coroapi.transfer = api_transfer;
1002
1003	Newz (0, main_stack, 1, coro_stack);
1004	main_stack->idle_sp = (void *)-1;
1005		1167
1006	assert (("PRIO_NORMAL must be 0", !PRIO_NORMAL));	1168	assert (("PRIO_NORMAL must be 0", !PRIO_NORMAL));
1007	}	1169	}
1008		1170
1009	SV *	1171	SV *
…		…
1014	HV *hv;	1176	HV *hv;
1015	int i;	1177	int i;
1016		1178
1017	Newz (0, coro, 1, struct coro);	1179	Newz (0, coro, 1, struct coro);
1018	coro->args = newAV ();	1180	coro->args = newAV ();
		1181	coro->save = CORO_SAVE_ALL;
		1182	coro->flags = CF_NEW;
1019		1183
1020	hv = newHV ();	1184	hv = newHV ();
1021	sv_magicext ((SV )hv, 0, PERL_MAGIC_ext, &coro_state_vtbl, (char )coro, 0)->mg_flags \|= MGf_DUP;	1185	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));	1186	RETVAL = sv_bless (newRV_noinc ((SV *)hv), gv_stashpv (klass, 1));
1023		1187
1024	for (i = 1; i < items; i++)	1188	for (i = 1; i < items; i++)
1025	av_push (coro->args, newSVsv (ST (i)));	1189	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	}	1190	}
1031	OUTPUT:	1191	OUTPUT:
1032	RETVAL	1192	RETVAL
1033		1193
		1194	int
		1195	save (SV *coro, int new_save = -1)
		1196	CODE:
		1197	RETVAL = api_save (coro, new_save);
		1198	OUTPUT:
		1199	RETVAL
		1200
1034	void	1201	void
1035	transfer (...)	1202	_set_stacklevel (...)
1036	ALIAS:	1203	ALIAS:
1037	Coro::schedule = 1	1204	Coro::State::transfer = 1
1038	Coro::cede = 2	1205	Coro::schedule = 2
1039	_set_stacklevel = 3	1206	Coro::cede = 3
		1207	Coro::cede_notself = 4
1040	CODE:	1208	CODE:
1041	{	1209	{
1042	struct transfer_args ta;	1210	struct transfer_args ta;
1043		1211
1044	switch (ix)	1212	switch (ix)
1045	{	1213	{
1046	case 0:	1214	case 0:
1047	if (items != 3)	1215	ta.prev = (struct coro )INT2PTR (coro_cctx , SvIV (ST (0)));
1048	croak ("Coro::State::transfer(prev,next,flags) expects three arguments, not %d", items);	1216	ta.next = 0;
1049
1050	prepare_transfer (&ta, ST (0), ST (1), SvIV (ST (2)));
1051	break;	1217	break;
1052		1218
1053	case 1:	1219	case 1:
		1220	if (items != 2)
		1221	croak ("Coro::State::transfer (prev,next) expects two arguments, not %d", items);
		1222
		1223	prepare_transfer (&ta, ST (0), ST (1));
		1224	break;
		1225
		1226	case 2:
1054	prepare_schedule (&ta);	1227	prepare_schedule (&ta);
1055	break;	1228	break;
1056		1229
1057	case 2:	1230	case 3:
1058	prepare_cede (&ta);	1231	prepare_cede (&ta);
1059	break;	1232	break;
1060		1233
1061	case 3:	1234	case 4:
1062	ta.prev = (struct coro )INT2PTR (coro_stack , SvIV (ST (0)));	1235	if (!prepare_cede_notself (&ta))
1063	ta.next = 0;	1236	XSRETURN_EMPTY;
1064	ta.flags = TRANSFER_SET_STACKLEVEL;	1237
1065	break;	1238	break;
1066	}	1239	}
1067		1240
		1241	BARRIER;
1068	TRANSFER (ta);	1242	TRANSFER (ta);
1069	}
1070		1243
1071	void	1244	if (GIMME_V != G_VOID && ta.next != ta.prev)
1072	_clone_state_from (SV dst, SV src)	1245	XSRETURN_YES;
		1246	}
		1247
		1248	bool
		1249	_destroy (SV *coro_sv)
1073	CODE:	1250	CODE:
1074	{	1251	RETVAL = coro_state_destroy (SvSTATE (coro_sv));
1075	struct coro *coro_src = SvSTATE (src);	1252	OUTPUT:
1076		1253	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		1254
1089	void	1255	void
1090	_exit (code)	1256	_exit (code)
1091	int code	1257	int code
1092	PROTOTYPE: $	1258	PROTOTYPE: $
1093	CODE:	1259	CODE:
1094	_exit (code);	1260	_exit (code);
1095		1261
1096	MODULE = Coro::State PACKAGE = Coro::Cont	1262	int
		1263	cctx_count ()
		1264	CODE:
		1265	RETVAL = cctx_count;
		1266	OUTPUT:
		1267	RETVAL
1097		1268
1098	void	1269	int
1099	yield (...)	1270	cctx_idle ()
1100	PROTOTYPE: @	1271	CODE:
1101	CODE:	1272	RETVAL = cctx_idle;
1102	{	1273	OUTPUT:
1103	SV *yieldstack;	1274	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		1275
1128	MODULE = Coro::State PACKAGE = Coro	1276	MODULE = Coro::State PACKAGE = Coro
1129		1277
1130	BOOT:	1278	BOOT:
1131	{	1279	{
…		…
1138	newCONSTSUB (coro_stash, "PRIO_NORMAL", newSViv (PRIO_NORMAL));	1286	newCONSTSUB (coro_stash, "PRIO_NORMAL", newSViv (PRIO_NORMAL));
1139	newCONSTSUB (coro_stash, "PRIO_LOW", newSViv (PRIO_LOW));	1287	newCONSTSUB (coro_stash, "PRIO_LOW", newSViv (PRIO_LOW));
1140	newCONSTSUB (coro_stash, "PRIO_IDLE", newSViv (PRIO_IDLE));	1288	newCONSTSUB (coro_stash, "PRIO_IDLE", newSViv (PRIO_IDLE));
1141	newCONSTSUB (coro_stash, "PRIO_MIN", newSViv (PRIO_MIN));	1289	newCONSTSUB (coro_stash, "PRIO_MIN", newSViv (PRIO_MIN));
1142		1290
1143	coro_current = gv_fetchpv ("Coro::current", TRUE, SVt_PV);	1291	coro_current = get_sv ("Coro::current", FALSE);
1144	coro_idle = gv_fetchpv ("Coro::idle" , TRUE, SVt_PV);	1292	SvREADONLY_on (coro_current);
1145		1293
1146	for (i = PRIO_MAX - PRIO_MIN + 1; i--; )	1294	for (i = PRIO_MAX - PRIO_MIN + 1; i--; )
1147	coro_ready[i] = newAV ();	1295	coro_ready[i] = newAV ();
1148		1296
1149	{	1297	{
1150	SV *sv = perl_get_sv("Coro::API", 1);	1298	SV *sv = perl_get_sv("Coro::API", 1);
1151		1299
1152	coroapi.schedule = api_schedule;	1300	coroapi.schedule = api_schedule;
		1301	coroapi.save = api_save;
1153	coroapi.cede = api_cede;	1302	coroapi.cede = api_cede;
		1303	coroapi.cede_notself = api_cede_notself;
1154	coroapi.ready = api_ready;	1304	coroapi.ready = api_ready;
		1305	coroapi.is_ready = api_is_ready;
1155	coroapi.nready = &coro_nready;	1306	coroapi.nready = &coro_nready;
1156	coroapi.current = coro_current;	1307	coroapi.current = coro_current;
1157		1308
1158	GCoroAPI = &coroapi;	1309	GCoroAPI = &coroapi;
1159	sv_setiv (sv, (IV)&coroapi);	1310	sv_setiv (sv, (IV)&coroapi);
1160	SvREADONLY_on (sv);	1311	SvREADONLY_on (sv);
1161	}	1312	}
1162	}	1313	}
		1314
		1315	void
		1316	_set_current (SV *current)
		1317	PROTOTYPE: $
		1318	CODE:
		1319	SvREFCNT_dec (SvRV (coro_current));
		1320	SvRV_set (coro_current, SvREFCNT_inc (SvRV (current)));
1163		1321
1164	int	1322	int
1165	prio (Coro::State coro, int newprio = 0)	1323	prio (Coro::State coro, int newprio = 0)
1166	ALIAS:	1324	ALIAS:
1167	nice = 1	1325	nice = 1
…		…
1170	RETVAL = coro->prio;	1328	RETVAL = coro->prio;
1171		1329
1172	if (items > 1)	1330	if (items > 1)
1173	{	1331	{
1174	if (ix)	1332	if (ix)
1175	newprio += coro->prio;	1333	newprio = coro->prio - newprio;
1176		1334
1177	if (newprio < PRIO_MIN) newprio = PRIO_MIN;	1335	if (newprio < PRIO_MIN) newprio = PRIO_MIN;
1178	if (newprio > PRIO_MAX) newprio = PRIO_MAX;	1336	if (newprio > PRIO_MAX) newprio = PRIO_MAX;
1179		1337
1180	coro->prio = newprio;	1338	coro->prio = newprio;
1181	}	1339	}
1182	}	1340	}
		1341	OUTPUT:
		1342	RETVAL
1183		1343
1184	void	1344	SV *
1185	ready (SV *self)	1345	ready (SV *self)
1186	PROTOTYPE: $	1346	PROTOTYPE: $
1187	CODE:	1347	CODE:
1188	api_ready (self);	1348	RETVAL = boolSV (api_ready (self));
		1349	OUTPUT:
		1350	RETVAL
		1351
		1352	SV *
		1353	is_ready (SV *self)
		1354	PROTOTYPE: $
		1355	CODE:
		1356	RETVAL = boolSV (api_is_ready (self));
		1357	OUTPUT:
		1358	RETVAL
1189		1359
1190	int	1360	int
1191	nready (...)	1361	nready (...)
1192	PROTOTYPE:	1362	PROTOTYPE:
1193	CODE:	1363	CODE:
…		…
1199		1369
1200	SV *	1370	SV *
1201	_get_state ()	1371	_get_state ()
1202	CODE:	1372	CODE:
1203	{	1373	{
1204	struct {	1374	struct io_state *data;
1205	int errorno;
1206	int laststype;
1207	int laststatval;
1208	Stat_t statcache;
1209	} data;
1210		1375
		1376	RETVAL = newSV (sizeof (struct io_state));
		1377	data = (struct io_state *)SvPVX (RETVAL);
		1378	SvCUR_set (RETVAL, sizeof (struct io_state));
		1379	SvPOK_only (RETVAL);
		1380
1211	data.errorno = errno;	1381	data->errorno = errno;
1212	data.laststype = PL_laststype;	1382	data->laststype = PL_laststype;
1213	data.laststatval = PL_laststatval;	1383	data->laststatval = PL_laststatval;
1214	data.statcache = PL_statcache;	1384	data->statcache = PL_statcache;
1215
1216	RETVAL = newSVpvn ((char *)&data, sizeof data);
1217	}	1385	}
1218	OUTPUT:	1386	OUTPUT:
1219	RETVAL	1387	RETVAL
1220		1388
1221	void	1389	void
1222	_set_state (char *data_)	1390	_set_state (char *data_)
1223	PROTOTYPE: $	1391	PROTOTYPE: $
1224	CODE:	1392	CODE:
1225	{	1393	{
1226	struct {	1394	struct io_state data = (void )data_;
1227	int errorno;
1228	int laststype;
1229	int laststatval;
1230	Stat_t statcache;
1231	} data = (void )data_;
1232		1395
1233	errno = data->errorno;	1396	errno = data->errorno;
1234	PL_laststype = data->laststype;	1397	PL_laststype = data->laststype;
1235	PL_laststatval = data->laststatval;	1398	PL_laststatval = data->laststatval;
1236	PL_statcache = data->statcache;	1399	PL_statcache = data->statcache;
1237	}	1400	}
		1401

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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 1.144 by root, Sun Mar 4 11:45:23 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 1.144 by root, Sun Mar 4 11:45:23 2007 UTC