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

Comparing Coro/Coro/State.xs (file contents):
Revision 1.97 by root, Sun Nov 26 21:21:14 2006 UTC vs.
Revision 1.145 by root, Mon Mar 12 21:40:14 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
		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))
		108
71	#include "CoroAPI.h"	109	#include "CoroAPI.h"
72
73	#define TRANSFER_SET_STACKLEVEL 0x8bfbfbfb /* magic cookie */
74		110
75	#ifdef USE_ITHREADS	111	#ifdef USE_ITHREADS
76	static perl_mutex coro_mutex;	112	static perl_mutex coro_mutex;
77	# define LOCK do { MUTEX_LOCK (&coro_mutex); } while (0)	113	# define LOCK do { MUTEX_LOCK (&coro_mutex); } while (0)
78	# define UNLOCK do { MUTEX_UNLOCK (&coro_mutex); } while (0)	114	# define UNLOCK do { MUTEX_UNLOCK (&coro_mutex); } while (0)
79	#else	115	#else
80	# define LOCK (void)0	116	# define LOCK (void)0
81	# define UNLOCK (void)0	117	# define UNLOCK (void)0
82	#endif	118	#endif
83		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
		129	static size_t coro_stacksize = CORO_STACKSIZE;
84	static struct CoroAPI coroapi;	130	static struct CoroAPI coroapi;
85	static AV main_mainstack; / used to differentiate between $main and others */	131	static AV main_mainstack; / used to differentiate between $main and others */
86	static HV coro_state_stash, coro_stash;	132	static HV coro_state_stash, coro_stash;
87	static SV coro_mortal; / will be freed after next transfer */	133	static SV coro_mortal; / will be freed after next transfer */
88		134
		135	static struct coro_cctx *cctx_first;
		136	static int cctx_count, cctx_idle;
		137
89	/* this is a structure representing a c-level coroutine */	138	/* this is a structure representing a c-level coroutine */
90	typedef struct coro_stack {	139	typedef struct coro_cctx {
91	struct coro_stack *next;	140	struct coro_cctx *next;
92		141
93	/* the stack */	142	/* the stack */
94	void *sptr;	143	void *sptr;
95	long ssize; /* positive == mmap, otherwise malloc */	144	size_t ssize;
96		145
97	/* cpu state */	146	/* cpu state */
98	void idle_sp; / sp of top-level transfer/schedule/cede call */	147	void idle_sp; / sp of top-level transfer/schedule/cede call */
		148	JMPENV idle_te; / same as idle_sp, but for top_env, TODO: remove once stable */
99	JMPENV *top_env;	149	JMPENV *top_env;
100	coro_context cctx;	150	coro_context cctx;
101	} coro_stack;	151
		152	#if CORO_USE_VALGRIND
		153	int valgrind_id;
		154	#endif
		155	char inuse, mapped;
		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	};
102		164
103	/* this is a structure representing a perl-level coroutine */	165	/* this is a structure representing a perl-level coroutine */
104	struct coro {	166	struct coro {
105	/* the c coroutine allocated to this perl coroutine, if any */	167	/* the c coroutine allocated to this perl coroutine, if any */
106	coro_stack *stack;	168	coro_cctx *cctx;
107		169
108	/* data associated with this coroutine (initial args) */	170	/* data associated with this coroutine (initial args) */
109	AV *args;	171	AV *args;
110	int refcnt;	172	int refcnt;
		173	int save; /* CORO_SAVE flags */
		174	int flags; /* CF_ flags */
111		175
112	/* optionally saved, might be zero */	176	/* optionally saved, might be zero */
113	AV *defav;	177	AV defav; / @_ */
114	SV *defsv;	178	SV defsv; / $_ */
115	SV *errsv;	179	SV errsv; / $@ */
		180	SV irssv; / $/ */
		181	SV irssv_sv; / real $/ cache */
116		182
117	/* saved global state not related to stacks */	183	#define VAR(name,type) type name;
118	U8 dowarn;	184	# include "state.h"
119	I32 in_eval;	185	#undef VAR
120
121	/* the stacks and related info (callchain etc..) */
122	PERL_SI *curstackinfo;
123	AV *curstack;
124	AV *mainstack;
125	SV **stack_sp;
126	OP *op;
127	SV **curpad;
128	AV *comppad;
129	CV *compcv;
130	SV **stack_base;
131	SV **stack_max;
132	SV **tmps_stack;
133	I32 tmps_floor;
134	I32 tmps_ix;
135	I32 tmps_max;
136	I32 *markstack;
137	I32 *markstack_ptr;
138	I32 *markstack_max;
139	I32 *scopestack;
140	I32 scopestack_ix;
141	I32 scopestack_max;
142	ANY *savestack;
143	I32 savestack_ix;
144	I32 savestack_max;
145	OP **retstack;
146	I32 retstack_ix;
147	I32 retstack_max;
148	PMOP *curpm;
149	COP *curcop;
150		186
151	/* coro process data */	187	/* coro process data */
152	int prio;	188	int prio;
153	};	189	};
154		190
155	typedef struct coro *Coro__State;	191	typedef struct coro *Coro__State;
156	typedef struct coro *Coro__State_or_hashref;	192	typedef struct coro *Coro__State_or_hashref;
157		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
158	static AV *	210	static AV *
159	coro_clone_padlist (pTHX_ CV *cv)	211	coro_clone_padlist (CV *cv)
160	{	212	{
161	AV *padlist = CvPADLIST (cv);	213	AV *padlist = CvPADLIST (cv);
162	AV newpadlist, newpad;	214	AV newpadlist, newpad;
163		215
164	newpadlist = newAV ();	216	newpadlist = newAV ();
165	AvREAL_off (newpadlist);	217	AvREAL_off (newpadlist);
166	#if PERL_VERSION < 9	218	#if PERL_VERSION_ATLEAST (5,9,0)
		219	Perl_pad_push (aTHX_ padlist, AvFILLp (padlist) + 1);
		220	#else
167	Perl_pad_push (aTHX_ padlist, AvFILLp (padlist) + 1, 1);	221	Perl_pad_push (aTHX_ padlist, AvFILLp (padlist) + 1, 1);
168	#else
169	Perl_pad_push (aTHX_ padlist, AvFILLp (padlist) + 1);
170	#endif	222	#endif
171	newpad = (AV *)AvARRAY (padlist)[AvFILLp (padlist)];	223	newpad = (AV *)AvARRAY (padlist)[AvFILLp (padlist)];
172	--AvFILLp (padlist);	224	--AvFILLp (padlist);
173		225
174	av_store (newpadlist, 0, SvREFCNT_inc (*av_fetch (padlist, 0, FALSE)));	226	av_store (newpadlist, 0, SvREFCNT_inc (*av_fetch (padlist, 0, FALSE)));
…		…
176		228
177	return newpadlist;	229	return newpadlist;
178	}	230	}
179		231
180	static void	232	static void
181	free_padlist (pTHX_ AV *padlist)	233	free_padlist (AV *padlist)
182	{	234	{
183	/* may be during global destruction */	235	/* may be during global destruction */
184	if (SvREFCNT (padlist))	236	if (SvREFCNT (padlist))
185	{	237	{
186	I32 i = AvFILLp (padlist);	238	I32 i = AvFILLp (padlist);
…		…
207	AV *padlist;	259	AV *padlist;
208	AV av = (AV )mg->mg_obj;	260	AV av = (AV )mg->mg_obj;
209		261
210	/* casting is fun. */	262	/* casting is fun. */
211	while (&PL_sv_undef != (SV )(padlist = (AV )av_pop (av)))	263	while (&PL_sv_undef != (SV )(padlist = (AV )av_pop (av)))
212	free_padlist (aTHX_ padlist);	264	free_padlist (padlist);
213		265
214	SvREFCNT_dec (av);	266	SvREFCNT_dec (av);
215		267
216	return 0;	268	return 0;
217	}	269	}
218		270
219	#define PERL_MAGIC_coro PERL_MAGIC_ext	271	#define PERL_MAGIC_coro PERL_MAGIC_ext
220		272
221	static MGVTBL vtbl_coro = {0, 0, 0, 0, coro_cv_free};	273	static MGVTBL vtbl_coro = {0, 0, 0, 0, coro_cv_free};
222		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
223	/* the next two functions merely cache the padlists */	282	/* the next two functions merely cache the padlists */
224	static void	283	static void
225	get_padlist (pTHX_ CV *cv)	284	get_padlist (CV *cv)
226	{	285	{
227	MAGIC mg = mg_find ((SV )cv, PERL_MAGIC_coro);	286	MAGIC *mg = CORO_MAGIC (cv);
		287	AV *av;
228		288
229	if (mg && AvFILLp ((AV *)mg->mg_obj) >= 0)	289	if (mg && AvFILLp ((av = (AV *)mg->mg_obj)) >= 0)
230	CvPADLIST (cv) = (AV )av_pop ((AV )mg->mg_obj);	290	CvPADLIST (cv) = (AV *)AvARRAY (av)[AvFILLp (av)--];
231	else	291	else
232	{	292	{
233	#if 0	293	#if CORO_PREFER_PERL_FUNCTIONS
234	/* this is probably cleaner, but also slower? */	294	/* this is probably cleaner, but also slower? */
235	CV *cp = Perl_cv_clone (aTHX_ cv);	295	CV *cp = Perl_cv_clone (cv);
236	CvPADLIST (cv) = CvPADLIST (cp);	296	CvPADLIST (cv) = CvPADLIST (cp);
237	CvPADLIST (cp) = 0;	297	CvPADLIST (cp) = 0;
238	SvREFCNT_dec (cp);	298	SvREFCNT_dec (cp);
239	#else	299	#else
240	CvPADLIST (cv) = coro_clone_padlist (aTHX_ cv);	300	CvPADLIST (cv) = coro_clone_padlist (cv);
241	#endif	301	#endif
242	}	302	}
243	}	303	}
244		304
245	static void	305	static void
246	put_padlist (pTHX_ CV *cv)	306	put_padlist (CV *cv)
247	{	307	{
248	MAGIC mg = mg_find ((SV )cv, PERL_MAGIC_coro);	308	MAGIC *mg = CORO_MAGIC (cv);
		309	AV *av;
249		310
250	if (!mg)	311	if (!mg)
251	{	312	{
252	sv_magic ((SV *)cv, 0, PERL_MAGIC_coro, 0, 0);	313	sv_magic ((SV *)cv, 0, PERL_MAGIC_coro, 0, 0);
253	mg = mg_find ((SV *)cv, PERL_MAGIC_coro);	314	mg = mg_find ((SV *)cv, PERL_MAGIC_coro);
254	mg->mg_virtual = &vtbl_coro;	315	mg->mg_virtual = &vtbl_coro;
255	mg->mg_obj = (SV *)newAV ();	316	mg->mg_obj = (SV *)newAV ();
256	}	317	}
257		318
258	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);
259	}	325	}
		326
		327	/ load & save, init *****************************************************/
260		328
261	#define SB do {	329	#define SB do {
262	#define SE } while (0)	330	#define SE } while (0)
263		331
264	#define LOAD(state) load_state(aTHX_ (state));
265	#define SAVE(state,flags) save_state(aTHX_ (state),(flags));
266
267	#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
268		333
269	static void	334	static void
270	load_state(pTHX_ Coro__State c)	335	load_perl (Coro__State c)
271	{	336	{
272	PL_dowarn = c->dowarn;	337	#define VAR(name,type) PL_ ## name = c->name;
273	PL_in_eval = c->in_eval;	338	# include "state.h"
274		339	#undef VAR
275	PL_curstackinfo = c->curstackinfo;
276	PL_curstack = c->curstack;
277	PL_mainstack = c->mainstack;
278	PL_stack_sp = c->stack_sp;
279	PL_op = c->op;
280	PL_curpad = c->curpad;
281	PL_comppad = c->comppad;
282	PL_compcv = c->compcv;
283	PL_stack_base = c->stack_base;
284	PL_stack_max = c->stack_max;
285	PL_tmps_stack = c->tmps_stack;
286	PL_tmps_floor = c->tmps_floor;
287	PL_tmps_ix = c->tmps_ix;
288	PL_tmps_max = c->tmps_max;
289	PL_markstack = c->markstack;
290	PL_markstack_ptr = c->markstack_ptr;
291	PL_markstack_max = c->markstack_max;
292	PL_scopestack = c->scopestack;
293	PL_scopestack_ix = c->scopestack_ix;
294	PL_scopestack_max = c->scopestack_max;
295	PL_savestack = c->savestack;
296	PL_savestack_ix = c->savestack_ix;
297	PL_savestack_max = c->savestack_max;
298	#if PERL_VERSION < 9
299	PL_retstack = c->retstack;
300	PL_retstack_ix = c->retstack_ix;
301	PL_retstack_max = c->retstack_max;
302	#endif
303	PL_curpm = c->curpm;
304	PL_curcop = c->curcop;
305		340
306	if (c->defav) REPLACE_SV (GvAV (PL_defgv), c->defav);	341	if (c->defav) REPLACE_SV (GvAV (PL_defgv), c->defav);
307	if (c->defsv) REPLACE_SV (DEFSV , c->defsv);	342	if (c->defsv) REPLACE_SV (DEFSV , c->defsv);
308	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	}
309		355
310	{	356	{
311	dSP;	357	dSP;
312	CV *cv;	358	CV *cv;
313		359
314	/* now do the ugly restore mess */	360	/* now do the ugly restore mess */
315	while ((cv = (CV *)POPs))	361	while ((cv = (CV *)POPs))
316	{	362	{
317	AV padlist = (AV )POPs;
318
319	if (padlist)
320	{
321	put_padlist (aTHX_ cv); /* mark this padlist as available */	363	put_padlist (cv); /* mark this padlist as available */
322	CvPADLIST(cv) = padlist;	364	CvDEPTH (cv) = PTR2IV (POPs);
323	}	365	CvPADLIST (cv) = (AV *)POPs;
324
325	++CvDEPTH(cv);
326	}	366	}
327		367
328	PUTBACK;	368	PUTBACK;
329	}	369	}
		370	assert (!PL_comppad \|\| AvARRAY (PL_comppad));//D
330	}	371	}
331		372
332	static void	373	static void
333	save_state(pTHX_ Coro__State c, int flags)	374	save_perl (Coro__State c)
334	{	375	{
		376	assert (!PL_comppad \|\| AvARRAY (PL_comppad));//D
335	{	377	{
336	dSP;	378	dSP;
337	I32 cxix = cxstack_ix;	379	I32 cxix = cxstack_ix;
338	PERL_CONTEXT *ccstk = cxstack;	380	PERL_CONTEXT *ccstk = cxstack;
339	PERL_SI *top_si = PL_curstackinfo;	381	PERL_SI *top_si = PL_curstackinfo;
…		…
341	/*	383	/*
342	* 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
343	* (and reinitialize) all cv's in the whole callchain :(	385	* (and reinitialize) all cv's in the whole callchain :(
344	*/	386	*/
345		387
		388	EXTEND (SP, 3 + 1);
346	PUSHs (Nullsv);	389	PUSHs (Nullsv);
347	/* this loop was inspired by pp_caller */	390	/* this loop was inspired by pp_caller */
348	for (;;)	391	for (;;)
349	{	392	{
350	while (cxix >= 0)	393	while (cxix >= 0)
351	{	394	{
352	PERL_CONTEXT *cx = &ccstk[cxix--];	395	PERL_CONTEXT *cx = &ccstk[cxix--];
353		396
354	if (CxTYPE(cx) == CXt_SUB)	397	if (CxTYPE (cx) == CXt_SUB)
355	{	398	{
356	CV *cv = cx->blk_sub.cv;	399	CV *cv = cx->blk_sub.cv;
		400
357	if (CvDEPTH(cv))	401	if (CvDEPTH (cv))
358	{	402	{
359	EXTEND (SP, CvDEPTH(cv)*2);	403	EXTEND (SP, 3);
360
361	while (--CvDEPTH(cv))
362	{
363	/* this tells the restore code to increment CvDEPTH */
364	PUSHs (Nullsv);
365	PUSHs ((SV *)cv);
366	}
367
368	PUSHs ((SV *)CvPADLIST(cv));	404	PUSHs ((SV *)CvPADLIST (cv));
		405	PUSHs (INT2PTR (SV *, CvDEPTH (cv)));
369	PUSHs ((SV *)cv);	406	PUSHs ((SV *)cv);
370		407
		408	CvDEPTH (cv) = 0;
371	get_padlist (aTHX_ cv);	409	get_padlist (cv);
372	}	410	}
373	}	411	}
374	#ifdef CXt_FORMAT
375	else if (CxTYPE(cx) == CXt_FORMAT)
376	{
377	/* I never used formats, so how should I know how these are implemented? */
378	/* my bold guess is as a simple, plain sub... */
379	croak ("CXt_FORMAT not yet handled. Don't switch coroutines from within formats");
380	}
381	#endif
382	}	412	}
383		413
384	if (top_si->si_type == PERLSI_MAIN)	414	if (top_si->si_type == PERLSI_MAIN)
385	break;	415	break;
386		416
…		…
390	}	420	}
391		421
392	PUTBACK;	422	PUTBACK;
393	}	423	}
394		424
395	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;
396	c->defsv = flags & TRANSFER_SAVE_DEFSV ? SvREFCNT_inc (DEFSV) : 0;	426	c->defsv = c->save & CORO_SAVE_DEFSV ? SvREFCNT_inc (DEFSV) : 0;
397	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;
398		429
399	c->dowarn = PL_dowarn;	430	#define VAR(name,type)c->name = PL_ ## name;
400	c->in_eval = PL_in_eval;	431	# include "state.h"
401		432	#undef VAR
402	c->curstackinfo = PL_curstackinfo;
403	c->curstack = PL_curstack;
404	c->mainstack = PL_mainstack;
405	c->stack_sp = PL_stack_sp;
406	c->op = PL_op;
407	c->curpad = PL_curpad;
408	c->comppad = PL_comppad;
409	c->compcv = PL_compcv;
410	c->stack_base = PL_stack_base;
411	c->stack_max = PL_stack_max;
412	c->tmps_stack = PL_tmps_stack;
413	c->tmps_floor = PL_tmps_floor;
414	c->tmps_ix = PL_tmps_ix;
415	c->tmps_max = PL_tmps_max;
416	c->markstack = PL_markstack;
417	c->markstack_ptr = PL_markstack_ptr;
418	c->markstack_max = PL_markstack_max;
419	c->scopestack = PL_scopestack;
420	c->scopestack_ix = PL_scopestack_ix;
421	c->scopestack_max = PL_scopestack_max;
422	c->savestack = PL_savestack;
423	c->savestack_ix = PL_savestack_ix;
424	c->savestack_max = PL_savestack_max;
425	#if PERL_VERSION < 9
426	c->retstack = PL_retstack;
427	c->retstack_ix = PL_retstack_ix;
428	c->retstack_max = PL_retstack_max;
429	#endif
430	c->curpm = PL_curpm;
431	c->curcop = PL_curcop;
432	}	433	}
433		434
434	/*	435	/*
435	* allocate various perl stacks. This is an exact copy	436	* allocate various perl stacks. This is an exact copy
436	* of perl.c:init_stacks, except that it uses less memory	437	* of perl.c:init_stacks, except that it uses less memory
437	* on the (sometimes correct) assumption that coroutines do	438	* on the (sometimes correct) assumption that coroutines do
438	* not usually need a lot of stackspace.	439	* not usually need a lot of stackspace.
439	*/	440	*/
		441	#if CORO_PREFER_PERL_FUNCTIONS
		442	# define coro_init_stacks init_stacks
		443	#else
440	static void	444	static void
441	coro_init_stacks (pTHX)	445	coro_init_stacks ()
442	{	446	{
443	LOCK;
444
445	PL_curstackinfo = new_stackinfo(96, 1024/sizeof(PERL_CONTEXT) - 1);	447	PL_curstackinfo = new_stackinfo(128, 1024/sizeof(PERL_CONTEXT));
446	PL_curstackinfo->si_type = PERLSI_MAIN;	448	PL_curstackinfo->si_type = PERLSI_MAIN;
447	PL_curstack = PL_curstackinfo->si_stack;	449	PL_curstack = PL_curstackinfo->si_stack;
448	PL_mainstack = PL_curstack; /* remember in case we switch stacks */	450	PL_mainstack = PL_curstack; /* remember in case we switch stacks */
449		451
450	PL_stack_base = AvARRAY(PL_curstack);	452	PL_stack_base = AvARRAY(PL_curstack);
451	PL_stack_sp = PL_stack_base;	453	PL_stack_sp = PL_stack_base;
452	PL_stack_max = PL_stack_base + AvMAX(PL_curstack);	454	PL_stack_max = PL_stack_base + AvMAX(PL_curstack);
453		455
454	New(50,PL_tmps_stack,96,SV*);	456	New(50,PL_tmps_stack,128,SV*);
455	PL_tmps_floor = -1;	457	PL_tmps_floor = -1;
456	PL_tmps_ix = -1;	458	PL_tmps_ix = -1;
457	PL_tmps_max = 96;	459	PL_tmps_max = 128;
458		460
459	New(54,PL_markstack,16,I32);	461	New(54,PL_markstack,32,I32);
460	PL_markstack_ptr = PL_markstack;	462	PL_markstack_ptr = PL_markstack;
461	PL_markstack_max = PL_markstack + 16;	463	PL_markstack_max = PL_markstack + 32;
462		464
463	#ifdef SET_MARK_OFFSET	465	#ifdef SET_MARK_OFFSET
464	SET_MARK_OFFSET;	466	SET_MARK_OFFSET;
465	#endif	467	#endif
466		468
467	New(54,PL_scopestack,16,I32);	469	New(54,PL_scopestack,32,I32);
468	PL_scopestack_ix = 0;	470	PL_scopestack_ix = 0;
469	PL_scopestack_max = 16;	471	PL_scopestack_max = 32;
470		472
471	New(54,PL_savestack,96,ANY);	473	New(54,PL_savestack,64,ANY);
472	PL_savestack_ix = 0;	474	PL_savestack_ix = 0;
473	PL_savestack_max = 96;	475	PL_savestack_max = 64;
474		476
475	#if PERL_VERSION < 9	477	#if !PERL_VERSION_ATLEAST (5,9,0)
476	New(54,PL_retstack,8,OP*);	478	New(54,PL_retstack,16,OP*);
477	PL_retstack_ix = 0;	479	PL_retstack_ix = 0;
478	PL_retstack_max = 8;	480	PL_retstack_max = 16;
479	#endif	481	#endif
480
481	UNLOCK;
482	}	482	}
		483	#endif
483		484
484	/*	485	/*
485	* destroy the stacks, the callchain etc...	486	* destroy the stacks, the callchain etc...
486	*/	487	*/
487	static void	488	static void
488	destroy_stacks(pTHX)	489	coro_destroy_stacks ()
489	{	490	{
490	if (!IN_DESTRUCT)	491	if (!IN_DESTRUCT)
491	{	492	{
492	/* is this ugly, I ask? */	493	/* restore all saved variables and stuff */
493	LEAVE_SCOPE (0);	494	LEAVE_SCOPE (0);
		495	assert (PL_tmps_floor == -1);
494		496
495	/* sure it is, but more important: is it correct?? :/ */	497	/* free all temporaries */
496	FREETMPS;	498	FREETMPS;
		499	assert (PL_tmps_ix == -1);
497		500
		501	/* unwind all extra stacks */
498	/POPSTACK_TO (PL_mainstack);//D//use/	502	POPSTACK_TO (PL_mainstack);
		503
		504	/* unwind main stack */
		505	dounwind (-1);
499	}	506	}
500		507
501	while (PL_curstackinfo->si_next)	508	while (PL_curstackinfo->si_next)
502	PL_curstackinfo = PL_curstackinfo->si_next;	509	PL_curstackinfo = PL_curstackinfo->si_next;
503		510
504	while (PL_curstackinfo)	511	while (PL_curstackinfo)
505	{	512	{
506	PERL_SI *p = PL_curstackinfo->si_prev;	513	PERL_SI *p = PL_curstackinfo->si_prev;
507		514
508	{ /D//remove/
509	dSP;
510	SWITCHSTACK (PL_curstack, PL_curstackinfo->si_stack);
511	PUTBACK; /* possibly superfluous */
512	}
513
514	if (!IN_DESTRUCT)	515	if (!IN_DESTRUCT)
515	{
516	dounwind (-1);/D//remove/
517	SvREFCNT_dec (PL_curstackinfo->si_stack);	516	SvREFCNT_dec (PL_curstackinfo->si_stack);
518	}
519		517
520	Safefree (PL_curstackinfo->si_cxstack);	518	Safefree (PL_curstackinfo->si_cxstack);
521	Safefree (PL_curstackinfo);	519	Safefree (PL_curstackinfo);
522	PL_curstackinfo = p;	520	PL_curstackinfo = p;
523	}	521	}
524		522
525	Safefree (PL_tmps_stack);	523	Safefree (PL_tmps_stack);
526	Safefree (PL_markstack);	524	Safefree (PL_markstack);
527	Safefree (PL_scopestack);	525	Safefree (PL_scopestack);
528	Safefree (PL_savestack);	526	Safefree (PL_savestack);
529	#if PERL_VERSION < 9	527	#if !PERL_VERSION_ATLEAST (5,9,0)
530	Safefree (PL_retstack);	528	Safefree (PL_retstack);
531	#endif	529	#endif
532	}	530	}
		531
		532	/ coroutine stack handling **********************************************/
533		533
534	static void	534	static void
535	setup_coro (struct coro *coro)	535	setup_coro (struct coro *coro)
536	{	536	{
537	/*	537	/*
538	* emulate part of the perl startup here.	538	* emulate part of the perl startup here.
539	*/	539	*/
540	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	{
541	dSP;	587	dSP;
542	UNOP myop;	588	LOGOP myop;
543	SV sub_init = (SV )get_cv ("Coro::State::coro_init", FALSE);
544		589
545	coro_init_stacks (aTHX);
546	/PL_curcop = 0;/
547	/PL_in_eval = PL_in_eval;/ /* inherit */
548	SvREFCNT_dec (GvAV (PL_defgv));
549	GvAV (PL_defgv) = coro->args; coro->args = 0;
550
551	SPAGAIN;
552
553	Zero (&myop, 1, UNOP);	590	Zero (&myop, 1, LOGOP);
554	myop.op_next = Nullop;	591	myop.op_next = PL_op;
555	myop.op_flags = OPf_WANT_VOID;	592	myop.op_flags = OPf_WANT_VOID \| OPf_STACKED;
556		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;
557	PL_op = (OP *)&myop;	599	PL_op = (OP *)&myop;
558
559	PUSHMARK(SP);
560	XPUSHs (sub_init);
561	PUTBACK;
562	PL_op = PL_ppaddr[OP_ENTERSUB](aTHX);	600	PL_op = PL_ppaddr[OP_ENTERSUB](aTHX);
563	SPAGAIN;	601	SPAGAIN;
564
565	ENTER; /* necessary e.g. for dounwind */
566	}
567
568	static void
569	free_coro_mortal ()
570	{
571	if (coro_mortal)
572	{
573	dTHX;
574
575	SvREFCNT_dec (coro_mortal);
576	coro_mortal = 0;
577	}
578	}	602	}
579		603
580	static void	604	static void
581	coro_run (void *arg)	605	coro_run (void *arg)
582	{	606	{
		607	/* coro_run is the alternative tail of transfer(), so unlock here. */
		608	UNLOCK;
		609
583	/*	610	/*
584	* this is a _very_ stripped down perl interpreter ;)	611	* this is a _very_ stripped down perl interpreter ;)
585	*/	612	*/
586	dTHX;
587	int ret;
588
589	UNLOCK;
590
591	PL_top_env = &PL_start_env;	613	PL_top_env = &PL_start_env;
592		614
593	sv_setiv (get_sv ("Coro::State::cctx_stack", FALSE), PTR2IV ((coro_stack *)arg));	615	/* inject call to cctx_init */
594	sv_setiv (get_sv ("Coro::State::cctx_restartop", FALSE), PTR2IV (PL_op));	616	prepare_cctx ((coro_cctx *)arg);
595
596	/* continue at cctx_init, without entersub */
597	PL_restartop = CvSTART (get_cv ("Coro::State::cctx_init", FALSE));
598		617
599	/* somebody will hit me for both perl_run and PL_restartop */	618	/* somebody will hit me for both perl_run and PL_restartop */
600	ret = perl_run (aTHX_ PERL_GET_CONTEXT);	619	PL_restartop = PL_op;
601	printf ("ret %d\n", ret);//D	620	perl_run (PL_curinterp);
602		621
603	fputs ("FATAL: C coroutine fell over the edge of the world, aborting.\n", stderr);	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;
		630	void *stack_start;
		631	size_t stack_size;
611		632
		633	++cctx_count;
		634
612	New (0, stack, 1, coro_stack);	635	Newz (0, cctx, 1, coro_cctx);
613		636
614	#if HAVE_MMAP	637	#if HAVE_MMAP
615		638
616	stack->ssize = ((STACKSIZE * sizeof (long) + PAGESIZE - 1) / PAGESIZE + STACKGUARD) * PAGESIZE;	639	cctx->ssize = ((coro_stacksize * sizeof (long) + PAGESIZE - 1) / PAGESIZE + CORO_STACKGUARD) * PAGESIZE;
617	/* mmap suppsedly does allocate-on-write for us */	640	/* mmap supposedly does allocate-on-write for us */
618	stack->sptr = mmap (0, stack->ssize, PROT_EXEC\|PROT_READ\|PROT_WRITE, MAP_PRIVATE\|MAP_ANONYMOUS, 0, 0);	641	cctx->sptr = mmap (0, cctx->ssize, PROT_EXEC\|PROT_READ\|PROT_WRITE, MAP_PRIVATE\|MAP_ANONYMOUS, 0, 0);
619		642
620	if (stack->sptr == (void *)-1)	643	if (cctx->sptr != (void *)-1)
621	{
622	perror ("FATAL: unable to mmap stack for coroutine");
623	_exit (EXIT_FAILURE);
624	}	644	{
625
626	# if STACKGUARD	645	# if CORO_STACKGUARD
627	mprotect (stack->sptr, STACKGUARD * PAGESIZE, PROT_NONE);	646	mprotect (cctx->sptr, CORO_STACKGUARD * PAGESIZE, PROT_NONE);
628	# endif	647	# endif
629		648	stack_start = CORO_STACKGUARD * PAGESIZE + (char *)cctx->sptr;
630	#else	649	stack_size = cctx->ssize - CORO_STACKGUARD * PAGESIZE;
631		650	cctx->mapped = 1;
632	stack->ssize = STACKSIZE * (long)sizeof (long);
633	New (0, stack->sptr, STACKSIZE, long);
634
635	if (!stack->sptr)
636	{	651	}
		652	else
		653	#endif
		654	{
		655	cctx->ssize = coro_stacksize * (long)sizeof (long);
		656	New (0, cctx->sptr, coro_stacksize, long);
		657
		658	if (!cctx->sptr)
		659	{
637	perror (stderr, "FATAL: unable to malloc stack for coroutine");	660	perror ("FATAL: unable to allocate stack for coroutine");
638	_exit (EXIT_FAILURE);	661	_exit (EXIT_FAILURE);
639	}	662	}
640		663
641	#endif	664	stack_start = cctx->sptr;
		665	stack_size = cctx->ssize;
		666	}
642		667
		668	REGISTER_STACK (cctx, (char )stack_start, (char )stack_start + stack_size);
643	coro_create (&stack->cctx, coro_run, (void *)stack, stack->sptr, stack->ssize);	669	coro_create (&cctx->cctx, coro_run, (void *)cctx, stack_start, stack_size);
644		670
645	return stack;	671	return cctx;
646	}	672	}
647		673
648	static void	674	static void
649	stack_free (coro_stack *stack)	675	cctx_destroy (coro_cctx *cctx)
650	{	676	{
651	if (!stack)	677	if (!cctx)
652	return;	678	return;
653		679
		680	--cctx_count;
		681
		682	#if CORO_USE_VALGRIND
		683	VALGRIND_STACK_DEREGISTER (cctx->valgrind_id);
		684	#endif
		685
654	#if HAVE_MMAP	686	#if HAVE_MMAP
		687	if (cctx->mapped)
655	munmap (stack->sptr, stack->ssize);	688	munmap (cctx->sptr, cctx->ssize);
656	#else
657	Safefree (stack->sptr);
658	#endif
659
660	Safefree (stack);
661	}
662
663	static coro_stack *stack_first;
664
665	static coro_stack *
666	stack_get ()
667	{
668	coro_stack *stack;
669
670	if (stack_first)
671	{
672	stack = stack_first;
673	stack_first = stack->next;
674	}
675	else	689	else
		690	#endif
		691	Safefree (cctx->sptr);
		692
		693	Safefree (cctx);
		694	}
		695
		696	static coro_cctx *
		697	cctx_get ()
		698	{
		699	while (cctx_first)
676	{	700	{
677	stack = stack_new ();	701	coro_cctx *cctx = cctx_first;
		702	cctx_first = cctx->next;
		703	--cctx_idle;
		704
		705	if (cctx->ssize >= coro_stacksize)
		706	return cctx;
		707
		708	cctx_destroy (cctx);
		709	}
		710
678	PL_op = PL_op->op_next;	711	PL_op = PL_op->op_next;
		712	return cctx_new ();
		713	}
		714
		715	static void
		716	cctx_put (coro_cctx *cctx)
		717	{
		718	/* free another cctx if overlimit */
		719	if (cctx_idle >= MAX_IDLE_CCTX)
		720	{
		721	coro_cctx *first = cctx_first;
		722	cctx_first = first->next;
		723	--cctx_idle;
		724
		725	assert (!first->inuse);
		726	cctx_destroy (first);
679	}	727	}
680		728
681	return stack;	729	++cctx_idle;
		730	cctx->next = cctx_first;
		731	cctx_first = cctx;
682	}	732	}
683		733
684	static void	734	/ coroutine switching ***************************************************/
685	stack_put (coro_stack *stack)
686	{
687	stack->next = stack_first;
688	stack_first = stack;
689	}
690		735
691	/* never call directly, always through the coro_state_transfer global variable */	736	/* never call directly, always through the coro_state_transfer global variable */
692	static void	737	static void NOINLINE
693	transfer_impl (pTHX_ struct coro prev, struct coro next, int flags)	738	transfer (struct coro prev, struct coro next)
694	{	739	{
695	dSTACKLEVEL;	740	dSTACKLEVEL;
696		741
697	/* sometimes transfer is only called to set idle_sp */	742	/* sometimes transfer is only called to set idle_sp */
698	if (flags == TRANSFER_SET_STACKLEVEL)	743	if (!next)
		744	{
699	((coro_stack *)prev)->idle_sp = STACKLEVEL;	745	((coro_cctx *)prev)->idle_sp = STACKLEVEL;
		746	assert (((coro_cctx )prev)->idle_te = PL_top_env); / just for the side-effect when asserts are enabled */
		747	}
700	else if (prev != next)	748	else if (prev != next)
701	{	749	{
702	coro_stack *prev__stack;	750	coro_cctx *prev__cctx;
		751
		752	if (prev->flags & CF_NEW)
		753	{
		754	/* create a new empty context */
		755	Newz (0, prev->cctx, 1, coro_cctx);
		756	prev->cctx->inuse = 1;
		757	prev->flags &= ~CF_NEW;
		758	prev->flags \|= CF_RUNNING;
		759	}
		760
		761	/TODO: must not croak here /
		762	if (!prev->flags & CF_RUNNING)
		763	croak ("Coro::State::transfer called with non-running prev Coro::State, but can only transfer from running states");
		764
		765	if (next->flags & CF_RUNNING)
		766	croak ("Coro::State::transfer called with running next Coro::State, but can only transfer to inactive states");
		767
		768	if (next->flags & CF_DESTROYED)
		769	croak ("Coro::State::transfer called with destroyed next Coro::State, but can only transfer to inactive states");
		770
		771	prev->flags &= ~CF_RUNNING;
		772	next->flags \|= CF_RUNNING;
703		773
704	LOCK;	774	LOCK;
705		775
706	if (next->mainstack)	776	if (next->flags & CF_NEW)
707	{	777	{
708	/* coroutine already started */	778	/* need to start coroutine */
709	SAVE (prev, flags);	779	next->flags &= ~CF_NEW;
710	LOAD (next);	780	/* first get rid of the old state */
		781	save_perl (prev);
		782	/* setup coroutine call */
		783	setup_coro (next);
		784	/* need a new stack */
		785	assert (!next->cctx);
711	}	786	}
712	else	787	else
713	{	788	{
714	/* need to start coroutine */	789	/* coroutine already started */
715	/* first get rid of the old state */	790	save_perl (prev);
716	SAVE (prev, -1);	791	load_perl (next);
717	/* setup coroutine call */
718	setup_coro (next);
719	/* need a stack */
720	next->stack = 0;
721	}	792	}
722		793
723	if (!prev->stack)
724	/* create a new empty context */
725	Newz (0, prev->stack, 1, coro_stack);
726
727	prev__stack = prev->stack;	794	prev__cctx = prev->cctx;
728		795
729	/* possibly "free" the stack */	796	/* possibly "free" the cctx */
730	if (prev__stack->idle_sp == STACKLEVEL)	797	if (prev__cctx->idle_sp == STACKLEVEL)
731	{	798	{
732	stack_put (prev__stack);	799	/* I assume that STACKLEVEL is a stronger indicator than PL_top_env changes */
		800	assert (("ERROR: current top_env must equal previous top_env", PL_top_env == prev__cctx->idle_te));
		801
733	prev->stack = 0;	802	prev->cctx = 0;
		803
		804	cctx_put (prev__cctx);
		805	prev__cctx->inuse = 0;
734	}	806	}
735		807
736	if (!next->stack)	808	if (!next->cctx)
737	next->stack = stack_get ();
738
739	if (prev__stack != next->stack)
740	{	809	{
741	prev__stack->top_env = PL_top_env;	810	next->cctx = cctx_get ();
742	PL_top_env = next->stack->top_env;	811	assert (!next->cctx->inuse);
743	coro_transfer (&prev__stack->cctx, &next->stack->cctx);	812	next->cctx->inuse = 1;
744	}	813	}
745		814
		815	if (prev__cctx != next->cctx)
		816	{
		817	prev__cctx->top_env = PL_top_env;
		818	PL_top_env = next->cctx->top_env;
		819	coro_transfer (&prev__cctx->cctx, &next->cctx->cctx);
		820	}
		821
746	free_coro_mortal ();	822	free_coro_mortal ();
747
748	UNLOCK;	823	UNLOCK;
749	}	824	}
750	}	825	}
751		826
752	/* use this function pointer to call the above function */
753	/* this is done to increase chances of the compiler not inlining the call */
754	/* not static to make it even harder for the compiler (and theoretically impossible in most cases */
755	void (coro_state_transfer)(pTHX_ struct coro prev, struct coro *next, int flags) = transfer_impl;
756
757	struct transfer_args	827	struct transfer_args
758	{	828	{
759	struct coro prev, next;	829	struct coro prev, next;
760	int flags;
761	};	830	};
762		831
763	#define TRANSFER(ta) coro_state_transfer ((ta).prev, (ta).next, (ta).flags)	832	#define TRANSFER(ta) transfer ((ta).prev, (ta).next)
764		833
		834	/ high level stuff ******************************************************/
		835
765	static void	836	static int
766	coro_state_destroy (struct coro *coro)	837	coro_state_destroy (struct coro *coro)
767	{	838	{
768	if (coro->refcnt--)	839	if (coro->flags & CF_DESTROYED)
769	return;	840	return 0;
		841
		842	coro->flags \|= CF_DESTROYED;
		843
		844	if (coro->flags & CF_READY)
		845	{
		846	/* reduce nready, as destroying a ready coro effectively unreadies it */
		847	/* alternative: look through all ready queues and remove the coro */
		848	LOCK;
		849	--coro_nready;
		850	UNLOCK;
		851	}
		852	else
		853	coro->flags \|= CF_READY; /* make sure it is NOT put into the readyqueue */
770		854
771	if (coro->mainstack && coro->mainstack != main_mainstack)	855	if (coro->mainstack && coro->mainstack != main_mainstack)
772	{	856	{
773	struct coro temp;	857	struct coro temp;
774		858
775	SAVE (aTHX_ (&temp), TRANSFER_SAVE_ALL);	859	assert (!(coro->flags & CF_RUNNING));
776	LOAD (aTHX_ coro);
777		860
		861	Zero (&temp, 1, struct coro);
		862	temp.save = CORO_SAVE_ALL;
		863
		864	if (coro->flags & CF_RUNNING)
		865	croak ("FATAL: tried to destroy currently running coroutine");
		866
		867	save_perl (&temp);
		868	load_perl (coro);
		869
778	destroy_stacks (aTHX);	870	coro_destroy_stacks ();
779		871
780	LOAD ((&temp)); /* this will get rid of defsv etc.. */	872	load_perl (&temp); /* this will get rid of defsv etc.. */
781		873
782	coro->mainstack = 0;	874	coro->mainstack = 0;
783	}	875	}
784		876
785	stack_free (coro->stack);	877	cctx_destroy (coro->cctx);
786	SvREFCNT_dec (coro->args);	878	SvREFCNT_dec (coro->args);
787	Safefree (coro);	879
		880	return 1;
788	}	881	}
789		882
790	static int	883	static int
791	coro_state_clear (SV sv, MAGIC mg)	884	coro_state_free (pTHX_ SV sv, MAGIC mg)
792	{	885	{
793	struct coro coro = (struct coro )mg->mg_ptr;	886	struct coro coro = (struct coro )mg->mg_ptr;
794	mg->mg_ptr = 0;	887	mg->mg_ptr = 0;
795		888
		889	if (--coro->refcnt < 0)
		890	{
796	coro_state_destroy (coro);	891	coro_state_destroy (coro);
		892	Safefree (coro);
		893	}
797		894
798	return 0;	895	return 0;
799	}	896	}
800		897
801	static int	898	static int
802	coro_state_dup (MAGIC mg, CLONE_PARAMS params)	899	coro_state_dup (pTHX_ MAGIC mg, CLONE_PARAMS params)
803	{	900	{
804	struct coro coro = (struct coro )mg->mg_ptr;	901	struct coro coro = (struct coro )mg->mg_ptr;
805		902
806	++coro->refcnt;	903	++coro->refcnt;
807		904
808	return 0;	905	return 0;
809	}	906	}
810		907
811	static MGVTBL coro_state_vtbl = { 0, 0, 0, 0, coro_state_clear, 0, coro_state_dup, 0 };	908	static MGVTBL coro_state_vtbl = {
		909	0, 0, 0, 0,
		910	coro_state_free,
		911	0,
		912	#ifdef MGf_DUP
		913	coro_state_dup,
		914	#else
		915	# define MGf_DUP 0
		916	#endif
		917	};
812		918
813	static struct coro *	919	static struct coro *
814	SvSTATE (SV *coro)	920	SvSTATE (SV *coro)
815	{	921	{
816	HV *stash;	922	HV *stash;
…		…
825	/* very slow, but rare, check */	931	/* very slow, but rare, check */
826	if (!sv_derived_from (sv_2mortal (newRV_inc (coro)), "Coro::State"))	932	if (!sv_derived_from (sv_2mortal (newRV_inc (coro)), "Coro::State"))
827	croak ("Coro::State object required");	933	croak ("Coro::State object required");
828	}	934	}
829		935
830	mg = SvMAGIC (coro);	936	mg = CORO_MAGIC (coro);
831	assert (mg->mg_type == PERL_MAGIC_ext);
832	return (struct coro *)mg->mg_ptr;	937	return (struct coro *)mg->mg_ptr;
833	}	938	}
834		939
835	static void	940	static void
836	prepare_transfer (pTHX_ struct transfer_args ta, SV prev, SV *next, int flags)	941	prepare_transfer (struct transfer_args ta, SV prev_sv, SV *next_sv)
837	{	942	{
838	ta->prev = SvSTATE (prev);	943	ta->prev = SvSTATE (prev_sv);
839	ta->next = SvSTATE (next);	944	ta->next = SvSTATE (next_sv);
840	ta->flags = flags;
841	}	945	}
842		946
843	static void	947	static void
844	api_transfer (SV prev, SV next, int flags)	948	api_transfer (SV prev_sv, SV next_sv)
845	{	949	{
846	dTHX;
847	struct transfer_args ta;	950	struct transfer_args ta;
848		951
849	prepare_transfer (aTHX_ &ta, prev, next, flags);	952	prepare_transfer (&ta, prev_sv, next_sv);
850	TRANSFER (ta);	953	TRANSFER (ta);
851	}	954	}
852		955
		956	static int
		957	api_save (SV *coro_sv, int new_save)
		958	{
		959	struct coro *coro = SvSTATE (coro_sv);
		960	int old_save = coro->save;
		961
		962	if (new_save >= 0)
		963	coro->save = new_save;
		964
		965	return old_save;
		966	}
		967
853	/ Coro ******************************************************************/	968	/ Coro ******************************************************************/
854		969
855	#define PRIO_MAX 3
856	#define PRIO_HIGH 1
857	#define PRIO_NORMAL 0
858	#define PRIO_LOW -1
859	#define PRIO_IDLE -3
860	#define PRIO_MIN -4
861
862	/* for Coro.pm */
863	static GV coro_current, coro_idle;
864	static AV *coro_ready [PRIO_MAX-PRIO_MIN+1];
865	static int coro_nready;
866
867	static void	970	static void
868	coro_enq (pTHX_ SV *sv)	971	coro_enq (SV *coro_sv)
869	{	972	{
870	int prio;
871
872	if (SvTYPE (sv) != SVt_PVHV)
873	croak ("Coro::ready tried to enqueue something that is not a coroutine");
874
875	prio = SvSTATE (sv)->prio;
876
877	av_push (coro_ready [prio - PRIO_MIN], sv);	973	av_push (coro_ready [SvSTATE (coro_sv)->prio - PRIO_MIN], coro_sv);
878	coro_nready++;
879	}	974	}
880		975
881	static SV *	976	static SV *
882	coro_deq (pTHX_ int min_prio)	977	coro_deq (int min_prio)
883	{	978	{
884	int prio = PRIO_MAX - PRIO_MIN;	979	int prio = PRIO_MAX - PRIO_MIN;
885		980
886	min_prio -= PRIO_MIN;	981	min_prio -= PRIO_MIN;
887	if (min_prio < 0)	982	if (min_prio < 0)
888	min_prio = 0;	983	min_prio = 0;
889		984
890	for (prio = PRIO_MAX - PRIO_MIN + 1; --prio >= min_prio; )	985	for (prio = PRIO_MAX - PRIO_MIN + 1; --prio >= min_prio; )
891	if (AvFILLp (coro_ready [prio]) >= 0)	986	if (AvFILLp (coro_ready [prio]) >= 0)
892	{
893	coro_nready--;
894	return av_shift (coro_ready [prio]);	987	return av_shift (coro_ready [prio]);
895	}
896		988
897	return 0;	989	return 0;
898	}	990	}
899		991
900	static void	992	static int
901	api_ready (SV *coro)	993	api_ready (SV *coro_sv)
902	{	994	{
903	dTHX;	995	struct coro *coro;
904		996
905	if (SvROK (coro))	997	if (SvROK (coro_sv))
906	coro = SvRV (coro);	998	coro_sv = SvRV (coro_sv);
		999
		1000	coro = SvSTATE (coro_sv);
		1001
		1002	if (coro->flags & CF_READY)
		1003	return 0;
		1004
		1005	coro->flags \|= CF_READY;
907		1006
908	LOCK;	1007	LOCK;
909	coro_enq (aTHX_ SvREFCNT_inc (coro));	1008	coro_enq (SvREFCNT_inc (coro_sv));
		1009	++coro_nready;
910	UNLOCK;	1010	UNLOCK;
911	}
912		1011
		1012	return 1;
		1013	}
		1014
913	static void	1015	static int
		1016	api_is_ready (SV *coro_sv)
		1017	{
		1018	return !!(SvSTATE (coro_sv)->flags & CF_READY);
		1019	}
		1020
		1021	static void
914	prepare_schedule (aTHX_ struct transfer_args *ta)	1022	prepare_schedule (struct transfer_args *ta)
915	{	1023	{
916	SV current, prev, *next;	1024	SV prev_sv, next_sv;
		1025
		1026	for (;;)
		1027	{
		1028	LOCK;
		1029	next_sv = coro_deq (PRIO_MIN);
		1030
		1031	/* nothing to schedule: call the idle handler */
		1032	if (!next_sv)
		1033	{
		1034	dSP;
		1035	UNLOCK;
		1036
		1037	ENTER;
		1038	SAVETMPS;
		1039
		1040	PUSHMARK (SP);
		1041	PUTBACK;
		1042	call_sv (get_sv ("Coro::idle", FALSE), G_DISCARD);
		1043
		1044	FREETMPS;
		1045	LEAVE;
		1046	continue;
		1047	}
		1048
		1049	ta->next = SvSTATE (next_sv);
		1050
		1051	/* cannot transfer to destroyed coros, skip and look for next */
		1052	if (ta->next->flags & CF_DESTROYED)
		1053	{
		1054	UNLOCK;
		1055	SvREFCNT_dec (next_sv);
		1056	/* coro_nready is already taken care of by destroy */
		1057	continue;
		1058	}
		1059
		1060	--coro_nready;
		1061	UNLOCK;
		1062	break;
		1063	}
		1064
		1065	/* free this only after the transfer */
		1066	prev_sv = SvRV (coro_current);
		1067	SvRV_set (coro_current, next_sv);
		1068	ta->prev = SvSTATE (prev_sv);
		1069
		1070	assert (ta->next->flags & CF_READY);
		1071	ta->next->flags &= ~CF_READY;
917		1072
918	LOCK;	1073	LOCK;
919
920	current = GvSV (coro_current);
921
922	for (;;)
923	{
924	LOCK;
925
926	next = coro_deq (aTHX_ PRIO_MIN);
927
928	if (next)
929	break;
930
931	UNLOCK;
932
933	{
934	dSP;
935
936	ENTER;
937	SAVETMPS;
938
939	PUSHMARK (SP);
940	PUTBACK;
941	call_sv (GvSV (coro_idle), G_DISCARD);
942
943	FREETMPS;
944	LEAVE;
945	}
946	}
947
948	prev = SvRV (current);
949	SvRV (current) = next;
950
951	/* free this only after the transfer */
952	free_coro_mortal ();	1074	free_coro_mortal ();
953	coro_mortal = prev;	1075	coro_mortal = prev_sv;
954
955	ta->prev = SvSTATE (prev);
956	ta->next = SvSTATE (next);
957	ta->flags = TRANSFER_SAVE_ALL;
958
959	UNLOCK;	1076	UNLOCK;
960	}	1077	}
961		1078
962	static void	1079	static void
963	prepare_cede (aTHX_ struct transfer_args *ta)	1080	prepare_cede (struct transfer_args *ta)
964	{	1081	{
965	LOCK;	1082	api_ready (coro_current);
966	coro_enq (aTHX_ SvREFCNT_inc (SvRV (GvSV (coro_current))));
967	UNLOCK;
968
969	prepare_schedule (ta);	1083	prepare_schedule (ta);
970	}	1084	}
971		1085
		1086	static int
		1087	prepare_cede_notself (struct transfer_args *ta)
		1088	{
		1089	if (coro_nready)
		1090	{
		1091	SV *prev = SvRV (coro_current);
		1092	prepare_schedule (ta);
		1093	api_ready (prev);
		1094	return 1;
		1095	}
		1096	else
		1097	return 0;
		1098	}
		1099
972	static void	1100	static void
973	api_schedule (void)	1101	api_schedule (void)
974	{	1102	{
975	dTHX;
976	struct transfer_args ta;	1103	struct transfer_args ta;
977		1104
978	prepare_schedule (&ta);	1105	prepare_schedule (&ta);
979	TRANSFER (ta);	1106	TRANSFER (ta);
980	}	1107	}
981		1108
982	static void	1109	static int
983	api_cede (void)	1110	api_cede (void)
984	{	1111	{
985	dTHX;
986	struct transfer_args ta;	1112	struct transfer_args ta;
987		1113
988	prepare_cede (&ta);	1114	prepare_cede (&ta);
		1115
		1116	if (ta.prev != ta.next)
		1117	{
989	TRANSFER (ta);	1118	TRANSFER (ta);
		1119	return 1;
		1120	}
		1121	else
		1122	return 0;
		1123	}
		1124
		1125	static int
		1126	api_cede_notself (void)
		1127	{
		1128	struct transfer_args ta;
		1129
		1130	if (prepare_cede_notself (&ta))
		1131	{
		1132	TRANSFER (ta);
		1133	return 1;
		1134	}
		1135	else
		1136	return 0;
990	}	1137	}
991		1138
992	MODULE = Coro::State PACKAGE = Coro::State	1139	MODULE = Coro::State PACKAGE = Coro::State
993		1140
994	PROTOTYPES: DISABLE	1141	PROTOTYPES: DISABLE
…		…
1000	#endif	1147	#endif
1001	BOOT_PAGESIZE;	1148	BOOT_PAGESIZE;
1002		1149
1003	coro_state_stash = gv_stashpv ("Coro::State", TRUE);	1150	coro_state_stash = gv_stashpv ("Coro::State", TRUE);
1004		1151
1005	newCONSTSUB (coro_state_stash, "SAVE_DEFAV", newSViv (TRANSFER_SAVE_DEFAV));	1152	newCONSTSUB (coro_state_stash, "SAVE_DEFAV", newSViv (CORO_SAVE_DEFAV));
1006	newCONSTSUB (coro_state_stash, "SAVE_DEFSV", newSViv (TRANSFER_SAVE_DEFSV));	1153	newCONSTSUB (coro_state_stash, "SAVE_DEFSV", newSViv (CORO_SAVE_DEFSV));
1007	newCONSTSUB (coro_state_stash, "SAVE_ERRSV", newSViv (TRANSFER_SAVE_ERRSV));	1154	newCONSTSUB (coro_state_stash, "SAVE_ERRSV", newSViv (CORO_SAVE_ERRSV));
		1155	newCONSTSUB (coro_state_stash, "SAVE_IRSSV", newSViv (CORO_SAVE_IRSSV));
		1156	newCONSTSUB (coro_state_stash, "SAVE_ALL", newSViv (CORO_SAVE_ALL));
1008		1157
1009	main_mainstack = PL_mainstack;	1158	main_mainstack = PL_mainstack;
1010		1159
1011	coroapi.ver = CORO_API_VERSION;	1160	coroapi.ver = CORO_API_VERSION;
1012	coroapi.transfer = api_transfer;	1161	coroapi.transfer = api_transfer;
…		…
1022	HV *hv;	1171	HV *hv;
1023	int i;	1172	int i;
1024		1173
1025	Newz (0, coro, 1, struct coro);	1174	Newz (0, coro, 1, struct coro);
1026	coro->args = newAV ();	1175	coro->args = newAV ();
		1176	coro->save = CORO_SAVE_ALL;
		1177	coro->flags = CF_NEW;
1027		1178
1028	hv = newHV ();	1179	hv = newHV ();
1029	sv_magicext ((SV )hv, 0, PERL_MAGIC_ext, &coro_state_vtbl, (char )coro, 0)->mg_flags \|= MGf_DUP;	1180	sv_magicext ((SV )hv, 0, PERL_MAGIC_ext, &coro_state_vtbl, (char )coro, 0)->mg_flags \|= MGf_DUP;
1030	RETVAL = sv_bless (newRV_noinc ((SV *)hv), gv_stashpv (klass, 1));	1181	RETVAL = sv_bless (newRV_noinc ((SV *)hv), gv_stashpv (klass, 1));
1031		1182
1032	for (i = 1; i < items; i++)	1183	for (i = 1; i < items; i++)
1033	av_push (coro->args, newSVsv (ST (i)));	1184	av_push (coro->args, newSVsv (ST (i)));
1034
1035	/coro->mainstack = 0; //actual work is done inside transfer /
1036	/coro->stack = 0;/
1037	}	1185	}
1038	OUTPUT:	1186	OUTPUT:
		1187	RETVAL
		1188
		1189	int
		1190	save (SV *coro, int new_save = -1)
		1191	CODE:
		1192	RETVAL = api_save (coro, new_save);
		1193	OUTPUT:
1039	RETVAL	1194	RETVAL
1040		1195
1041	void	1196	void
1042	_set_stacklevel (...)	1197	_set_stacklevel (...)
1043	ALIAS:	1198	ALIAS:
1044	Coro::State::transfer = 1	1199	Coro::State::transfer = 1
1045	Coro::schedule = 2	1200	Coro::schedule = 2
1046	Coro::cede = 3	1201	Coro::cede = 3
1047	Coro::Cont::yield = 4	1202	Coro::cede_notself = 4
1048	CODE:	1203	CODE:
1049	{	1204	{
1050	struct transfer_args ta;	1205	struct transfer_args ta;
1051		1206
1052	switch (ix)	1207	switch (ix)
1053	{	1208	{
1054	case 0:	1209	case 0:
1055	ta.prev = (struct coro )INT2PTR (coro_stack , SvIV (ST (0)));	1210	ta.prev = (struct coro )INT2PTR (coro_cctx , SvIV (ST (0)));
1056	ta.next = 0;	1211	ta.next = 0;
1057	ta.flags = TRANSFER_SET_STACKLEVEL;
1058	break;	1212	break;
1059		1213
1060	case 1:	1214	case 1:
1061	if (items != 3)	1215	if (items != 2)
1062	croak ("Coro::State::transfer(prev,next,flags) expects three arguments, not %d", items);	1216	croak ("Coro::State::transfer (prev,next) expects two arguments, not %d", items);
1063		1217
1064	prepare_transfer (&ta, ST (0), ST (1), SvIV (ST (2)));	1218	prepare_transfer (&ta, ST (0), ST (1));
1065	break;	1219	break;
1066		1220
1067	case 2:	1221	case 2:
1068	prepare_schedule (&ta);	1222	prepare_schedule (&ta);
1069	break;	1223	break;
…		…
1071	case 3:	1225	case 3:
1072	prepare_cede (&ta);	1226	prepare_cede (&ta);
1073	break;	1227	break;
1074		1228
1075	case 4:	1229	case 4:
1076	{	1230	if (!prepare_cede_notself (&ta))
1077	SV *yieldstack;	1231	XSRETURN_EMPTY;
1078	SV *sv;
1079	AV *defav = GvAV (PL_defgv);
1080		1232
1081	yieldstack = *hv_fetch (
1082	(HV *)SvRV (GvSV (coro_current)),
1083	"yieldstack", sizeof ("yieldstack") - 1,
1084	0
1085	);
1086
1087	/* set up @_ -- ugly */
1088	av_clear (defav);
1089	av_fill (defav, items - 1);
1090	while (items--)
1091	av_store (defav, items, SvREFCNT_inc (ST(items)));
1092
1093	sv = av_pop ((AV *)SvRV (yieldstack));
1094	ta.prev = SvSTATE (av_fetch ((AV )SvRV (sv), 0, 0));
1095	ta.next = SvSTATE (av_fetch ((AV )SvRV (sv), 1, 0));
1096	ta.flags = 0;
1097	SvREFCNT_dec (sv);
1098	}
1099	break;	1233	break;
1100
1101	}	1234	}
1102		1235
		1236	BARRIER;
1103	TRANSFER (ta);	1237	TRANSFER (ta);
1104	}
1105		1238
1106	void	1239	if (GIMME_V != G_VOID && ta.next != ta.prev)
1107	_clone_state_from (SV dst, SV src)	1240	XSRETURN_YES;
		1241	}
		1242
		1243	bool
		1244	_destroy (SV *coro_sv)
1108	CODE:	1245	CODE:
1109	{	1246	RETVAL = coro_state_destroy (SvSTATE (coro_sv));
1110	struct coro *coro_src = SvSTATE (src);	1247	OUTPUT:
1111		1248	RETVAL
1112	sv_unmagic (SvRV (dst), PERL_MAGIC_ext);
1113
1114	++coro_src->refcnt;
1115	sv_magicext (SvRV (dst), 0, PERL_MAGIC_ext, &coro_state_vtbl, (char *)coro_src, 0)->mg_flags \|= MGf_DUP;
1116	}
1117
1118	void
1119	_nonlocal_goto (IV nextop)
1120	CODE:
1121	/* uuh, somebody will kill me again for this */
1122	PL_op->op_next = INT2PTR (OP *, nextop);
1123		1249
1124	void	1250	void
1125	_exit (code)	1251	_exit (code)
1126	int code	1252	int code
1127	PROTOTYPE: $	1253	PROTOTYPE: $
1128	CODE:	1254	CODE:
1129	_exit (code);	1255	_exit (code);
1130		1256
		1257	int
		1258	cctx_stacksize (int new_stacksize = 0)
		1259	CODE:
		1260	RETVAL = coro_stacksize;
		1261	if (new_stacksize)
		1262	coro_stacksize = new_stacksize;
		1263	OUTPUT:
		1264	RETVAL
		1265
		1266	int
		1267	cctx_count ()
		1268	CODE:
		1269	RETVAL = cctx_count;
		1270	OUTPUT:
		1271	RETVAL
		1272
		1273	int
		1274	cctx_idle ()
		1275	CODE:
		1276	RETVAL = cctx_idle;
		1277	OUTPUT:
		1278	RETVAL
		1279
1131	MODULE = Coro::State PACKAGE = Coro	1280	MODULE = Coro::State PACKAGE = Coro
1132		1281
1133	BOOT:	1282	BOOT:
1134	{	1283	{
1135	int i;	1284	int i;
…		…
1141	newCONSTSUB (coro_stash, "PRIO_NORMAL", newSViv (PRIO_NORMAL));	1290	newCONSTSUB (coro_stash, "PRIO_NORMAL", newSViv (PRIO_NORMAL));
1142	newCONSTSUB (coro_stash, "PRIO_LOW", newSViv (PRIO_LOW));	1291	newCONSTSUB (coro_stash, "PRIO_LOW", newSViv (PRIO_LOW));
1143	newCONSTSUB (coro_stash, "PRIO_IDLE", newSViv (PRIO_IDLE));	1292	newCONSTSUB (coro_stash, "PRIO_IDLE", newSViv (PRIO_IDLE));
1144	newCONSTSUB (coro_stash, "PRIO_MIN", newSViv (PRIO_MIN));	1293	newCONSTSUB (coro_stash, "PRIO_MIN", newSViv (PRIO_MIN));
1145		1294
1146	coro_current = gv_fetchpv ("Coro::current", TRUE, SVt_PV);	1295	coro_current = get_sv ("Coro::current", FALSE);
1147	coro_idle = gv_fetchpv ("Coro::idle" , TRUE, SVt_PV);	1296	SvREADONLY_on (coro_current);
1148		1297
1149	for (i = PRIO_MAX - PRIO_MIN + 1; i--; )	1298	for (i = PRIO_MAX - PRIO_MIN + 1; i--; )
1150	coro_ready[i] = newAV ();	1299	coro_ready[i] = newAV ();
1151		1300
1152	{	1301	{
1153	SV *sv = perl_get_sv("Coro::API", 1);	1302	SV *sv = perl_get_sv("Coro::API", 1);
1154		1303
1155	coroapi.schedule = api_schedule;	1304	coroapi.schedule = api_schedule;
		1305	coroapi.save = api_save;
1156	coroapi.cede = api_cede;	1306	coroapi.cede = api_cede;
		1307	coroapi.cede_notself = api_cede_notself;
1157	coroapi.ready = api_ready;	1308	coroapi.ready = api_ready;
		1309	coroapi.is_ready = api_is_ready;
1158	coroapi.nready = &coro_nready;	1310	coroapi.nready = &coro_nready;
1159	coroapi.current = coro_current;	1311	coroapi.current = coro_current;
1160		1312
1161	GCoroAPI = &coroapi;	1313	GCoroAPI = &coroapi;
1162	sv_setiv (sv, (IV)&coroapi);	1314	sv_setiv (sv, (IV)&coroapi);
1163	SvREADONLY_on (sv);	1315	SvREADONLY_on (sv);
1164	}	1316	}
1165	}	1317	}
		1318
		1319	void
		1320	_set_current (SV *current)
		1321	PROTOTYPE: $
		1322	CODE:
		1323	SvREFCNT_dec (SvRV (coro_current));
		1324	SvRV_set (coro_current, SvREFCNT_inc (SvRV (current)));
1166		1325
1167	int	1326	int
1168	prio (Coro::State coro, int newprio = 0)	1327	prio (Coro::State coro, int newprio = 0)
1169	ALIAS:	1328	ALIAS:
1170	nice = 1	1329	nice = 1
…		…
1173	RETVAL = coro->prio;	1332	RETVAL = coro->prio;
1174		1333
1175	if (items > 1)	1334	if (items > 1)
1176	{	1335	{
1177	if (ix)	1336	if (ix)
1178	newprio += coro->prio;	1337	newprio = coro->prio - newprio;
1179		1338
1180	if (newprio < PRIO_MIN) newprio = PRIO_MIN;	1339	if (newprio < PRIO_MIN) newprio = PRIO_MIN;
1181	if (newprio > PRIO_MAX) newprio = PRIO_MAX;	1340	if (newprio > PRIO_MAX) newprio = PRIO_MAX;
1182		1341
1183	coro->prio = newprio;	1342	coro->prio = newprio;
1184	}	1343	}
1185	}	1344	}
		1345	OUTPUT:
		1346	RETVAL
1186		1347
1187	void	1348	SV *
1188	ready (SV *self)	1349	ready (SV *self)
1189	PROTOTYPE: $	1350	PROTOTYPE: $
1190	CODE:	1351	CODE:
1191	api_ready (self);	1352	RETVAL = boolSV (api_ready (self));
		1353	OUTPUT:
		1354	RETVAL
		1355
		1356	SV *
		1357	is_ready (SV *self)
		1358	PROTOTYPE: $
		1359	CODE:
		1360	RETVAL = boolSV (api_is_ready (self));
		1361	OUTPUT:
		1362	RETVAL
1192		1363
1193	int	1364	int
1194	nready (...)	1365	nready (...)
1195	PROTOTYPE:	1366	PROTOTYPE:
1196	CODE:	1367	CODE:
…		…
1202		1373
1203	SV *	1374	SV *
1204	_get_state ()	1375	_get_state ()
1205	CODE:	1376	CODE:
1206	{	1377	{
1207	struct {	1378	struct io_state *data;
1208	int errorno;
1209	int laststype;
1210	int laststatval;
1211	Stat_t statcache;
1212	} data;
1213		1379
		1380	RETVAL = newSV (sizeof (struct io_state));
		1381	data = (struct io_state *)SvPVX (RETVAL);
		1382	SvCUR_set (RETVAL, sizeof (struct io_state));
		1383	SvPOK_only (RETVAL);
		1384
1214	data.errorno = errno;	1385	data->errorno = errno;
1215	data.laststype = PL_laststype;	1386	data->laststype = PL_laststype;
1216	data.laststatval = PL_laststatval;	1387	data->laststatval = PL_laststatval;
1217	data.statcache = PL_statcache;	1388	data->statcache = PL_statcache;
1218
1219	RETVAL = newSVpvn ((char *)&data, sizeof data);
1220	}	1389	}
1221	OUTPUT:	1390	OUTPUT:
1222	RETVAL	1391	RETVAL
1223		1392
1224	void	1393	void
1225	_set_state (char *data_)	1394	_set_state (char *data_)
1226	PROTOTYPE: $	1395	PROTOTYPE: $
1227	CODE:	1396	CODE:
1228	{	1397	{
1229	struct {	1398	struct io_state data = (void )data_;
1230	int errorno;
1231	int laststype;
1232	int laststatval;
1233	Stat_t statcache;
1234	} data = (void )data_;
1235		1399
1236	errno = data->errorno;	1400	errno = data->errorno;
1237	PL_laststype = data->laststype;	1401	PL_laststype = data->laststype;
1238	PL_laststatval = data->laststatval;	1402	PL_laststatval = data->laststatval;
1239	PL_statcache = data->statcache;	1403	PL_statcache = data->statcache;
1240	}	1404	}
		1405

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Comparing Coro/Coro/State.xs (file contents): Revision 1.97 by root, Sun Nov 26 21:21:14 2006 UTC vs. Revision 1.145 by root, Mon Mar 12 21:40:14 2007 UTC

Diff Legend

Comparing Coro/Coro/State.xs (file contents):
Revision 1.97 by root, Sun Nov 26 21:21:14 2006 UTC vs.
Revision 1.145 by root, Mon Mar 12 21:40:14 2007 UTC