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

Comparing Coro/Coro/State.xs (file contents):
Revision 1.49 by pcg, Sun Nov 23 03:34:13 2003 UTC vs.
Revision 1.88 by root, Fri Nov 24 15:34:33 2006 UTC

…		…
		1	#define PERL_NO_GET_CONTEXT
		2
		3	#include "libcoro/coro.c"
		4
1	#include "EXTERN.h"	5	#include "EXTERN.h"
2	#include "perl.h"	6	#include "perl.h"
3	#include "XSUB.h"	7	#include "XSUB.h"
4		8
5	#include "patchlevel.h"	9	#include "patchlevel.h"
6		10
7	#if PATCHLEVEL < 6	11	#if PERL_VERSION < 6
8	# ifndef PL_ppaddr	12	# ifndef PL_ppaddr
9	# define PL_ppaddr ppaddr	13	# define PL_ppaddr ppaddr
10	# endif	14	# endif
11	# ifndef call_sv	15	# ifndef call_sv
12	# define call_sv perl_call_sv	16	# define call_sv perl_call_sv
23	# ifndef IS_PADCONST	27	# ifndef IS_PADCONST
24	# define IS_PADCONST(v) 0	28	# define IS_PADCONST(v) 0
25	# endif	29	# endif
26	#endif	30	#endif
27		31
28	#include "libcoro/coro.c"
29
30	#include <signal.h>	32	#include <errno.h>
		33
		34	#if !__i386 && !__x86_64 && !__powerpc && !__m68k && !__alpha && !__mips && !__sparc64
		35	# undef STACKGUARD
		36	#endif
		37
		38	#ifndef STACKGUARD
		39	# define STACKGUARD 0
		40	#endif
31		41
32	#ifdef HAVE_MMAP	42	#ifdef HAVE_MMAP
33	# include <unistd.h>	43	# include <unistd.h>
34	# include <sys/mman.h>	44	# include <sys/mman.h>
35	# ifndef MAP_ANONYMOUS	45	# ifndef MAP_ANONYMOUS
…		…
37	# define MAP_ANONYMOUS MAP_ANON	47	# define MAP_ANONYMOUS MAP_ANON
38	# else	48	# else
39	# undef HAVE_MMAP	49	# undef HAVE_MMAP
40	# endif	50	# endif
41	# endif	51	# endif
		52	# include <limits.h>
		53	# ifndef PAGESIZE
		54	# define PAGESIZE pagesize
		55	# define BOOT_PAGESIZE pagesize = sysconf (_SC_PAGESIZE)
		56	static long pagesize;
		57	# else
		58	# define BOOT_PAGESIZE
42	#endif	59	# endif
		60	#endif
43		61
44	#define MAY_FLUSH /* increases codesize and is rarely used */
45
46	#define SUB_INIT "Coro::State::initialize"	62	#define SUB_INIT "Coro::State::initialize"
47	#define UCORO_STATE "_coro_state"
48		63
49	/* The next macro should declare a variable stacklevel that contains and approximation	64	/* The next macro should declare a variable stacklevel that contains and approximation
50	* to the current C stack pointer. Its property is that it changes with each call	65	* to the current C stack pointer. Its property is that it changes with each call
51	* and should be unique. */	66	* and should be unique. */
52	#define dSTACKLEVEL void *stacklevel = &stacklevel	67	#define dSTACKLEVEL void *stacklevel = &stacklevel
…		…
55		70
56	#define labs(l) ((l) >= 0 ? (l) : -(l))	71	#define labs(l) ((l) >= 0 ? (l) : -(l))
57		72
58	#include "CoroAPI.h"	73	#include "CoroAPI.h"
59		74
		75	#ifdef USE_ITHREADS
		76	static perl_mutex coro_mutex;
		77	# define LOCK do { MUTEX_LOCK (&coro_mutex); } while (0)
		78	# define UNLOCK do { MUTEX_UNLOCK (&coro_mutex); } while (0)
		79	#else
		80	# define LOCK (void)0
		81	# define UNLOCK (void)0
		82	#endif
		83
60	static struct CoroAPI coroapi;	84	static struct CoroAPI coroapi;
		85	static AV main_mainstack; / used to differentiate between $main and others */
		86	static HV coro_state_stash, coro_stash;
		87	static SV coro_mortal; / will be freed after next transfer */
61		88
62	/* this is actually not only the c stack but also c registers etc... */	89	/* this is actually not only the c stack but also c registers etc... */
63	typedef struct {	90	typedef struct {
64	int refcnt; /* pointer reference counter */	91	int refcnt; /* pointer reference counter */
65	int usecnt; /* shared by how many coroutines */	92	int usecnt; /* shared by how many coroutines */
…		…
70	void *sptr;	97	void *sptr;
71	long ssize; /* positive == mmap, otherwise malloc */	98	long ssize; /* positive == mmap, otherwise malloc */
72	} coro_stack;	99	} coro_stack;
73		100
74	struct coro {	101	struct coro {
75	/* the top-level JMPENV for each coroutine, needed to catch dies. */
76	JMPENV start_env;
77
78	/* the optional C context */	102	/* the optional C context */
79	coro_stack *stack;	103	coro_stack *stack;
80	void *cursp;	104	void *cursp;
81	int gencnt;	105	int gencnt;
82		106
…		…
95	AV *mainstack;	119	AV *mainstack;
96	SV **stack_sp;	120	SV **stack_sp;
97	OP *op;	121	OP *op;
98	SV **curpad;	122	SV **curpad;
99	AV *comppad;	123	AV *comppad;
		124	CV *compcv;
100	SV **stack_base;	125	SV **stack_base;
101	SV **stack_max;	126	SV **stack_max;
102	SV **tmps_stack;	127	SV **tmps_stack;
103	I32 tmps_floor;	128	I32 tmps_floor;
104	I32 tmps_ix;	129	I32 tmps_ix;
…		…
113	I32 savestack_ix;	138	I32 savestack_ix;
114	I32 savestack_max;	139	I32 savestack_max;
115	OP **retstack;	140	OP **retstack;
116	I32 retstack_ix;	141	I32 retstack_ix;
117	I32 retstack_max;	142	I32 retstack_max;
		143	PMOP *curpm;
118	COP *curcop;	144	COP *curcop;
119	JMPENV *top_env;	145	JMPENV *top_env;
120		146
		147	/* coro process data */
		148	int prio;
		149
121	/* data associated with this coroutine (initial args) */	150	/* data associated with this coroutine (initial args) */
122	AV *args;	151	AV *args;
		152	int refcnt;
123	};	153	};
124		154
125	typedef struct coro *Coro__State;	155	typedef struct coro *Coro__State;
126	typedef struct coro *Coro__State_or_hashref;	156	typedef struct coro *Coro__State_or_hashref;
127		157
128	static AV main_mainstack; / used to differentiate between $main and others */	158	static AV *
129	static HV *coro_state_stash;	159	coro_clone_padlist (pTHX_ CV *cv)
130	static SV *ucoro_state_sv;
131	static U32 ucoro_state_hash;
132	static HV *padlist_cache;
133	static SV coro_mortal; / will be freed after next transfer */
134
135	/* mostly copied from op.c:cv_clone2 */
136	STATIC AV *
137	clone_padlist (AV *protopadlist)
138	{	160	{
139	AV *av;	161	AV *padlist = CvPADLIST (cv);
140	I32 ix;
141	AV protopad_name = (AV ) * av_fetch (protopadlist, 0, FALSE);
142	AV protopad = (AV ) * av_fetch (protopadlist, 1, FALSE);
143	SV **pname = AvARRAY (protopad_name);
144	SV **ppad = AvARRAY (protopad);
145	I32 fname = AvFILLp (protopad_name);
146	I32 fpad = AvFILLp (protopad);
147	AV newpadlist, newpad_name, *newpad;	162	AV newpadlist, newpad;
148	SV **npad;
149
150	newpad_name = newAV ();
151	for (ix = fname; ix >= 0; ix--)
152	av_store (newpad_name, ix, SvREFCNT_inc (pname[ix]));
153
154	newpad = newAV ();
155	av_fill (newpad, AvFILLp (protopad));
156	npad = AvARRAY (newpad);
157		163
158	newpadlist = newAV ();	164	newpadlist = newAV ();
159	AvREAL_off (newpadlist);	165	AvREAL_off (newpadlist);
160	av_store (newpadlist, 0, (SV *) newpad_name);	166	#if PERL_VERSION < 9
		167	Perl_pad_push (aTHX_ padlist, AvFILLp (padlist) + 1, 1);
		168	#else
		169	Perl_pad_push (aTHX_ padlist, AvFILLp (padlist) + 1);
		170	#endif
		171	newpad = (AV *)AvARRAY (padlist)[AvFILLp (padlist)];
		172	--AvFILLp (padlist);
		173
		174	av_store (newpadlist, 0, SvREFCNT_inc (*av_fetch (padlist, 0, FALSE)));
161	av_store (newpadlist, 1, (SV *) newpad);	175	av_store (newpadlist, 1, (SV *)newpad);
162		176
163	av = newAV (); /* will be @_ */	177	return newpadlist;
164	av_extend (av, 0);	178	}
165	av_store (newpad, 0, (SV *) av);
166	AvFLAGS (av) = AVf_REIFY;
167		179
168	for (ix = fpad; ix > 0; ix--)	180	static void
		181	free_padlist (pTHX_ AV *padlist)
		182	{
		183	/* may be during global destruction */
		184	if (SvREFCNT (padlist))
169	{	185	{
170	SV *namesv = (ix <= fname) ? pname[ix] : Nullsv;	186	I32 i = AvFILLp (padlist);
171	if (namesv && namesv != &PL_sv_undef)	187	while (i >= 0)
172	{	188	{
173	char name = SvPVX (namesv); / XXX */	189	SV **svp = av_fetch (padlist, i--, FALSE);
174	if (SvFLAGS (namesv) & SVf_FAKE \|\| *name == '&')	190	if (svp)
175	{ /* lexical from outside? */
176	npad[ix] = SvREFCNT_inc (ppad[ix]);
177	}	191	{
178	else
179	{ /* our own lexical */
180	SV *sv;	192	SV *sv;
181	if (*name == '&')	193	while (&PL_sv_undef != (sv = av_pop ((AV )svp)))
182	sv = SvREFCNT_inc (ppad[ix]);	194	SvREFCNT_dec (sv);
183	else if (*name == '@')	195
184	sv = (SV *) newAV ();	196	SvREFCNT_dec (*svp);
185	else if (*name == '%')
186	sv = (SV *) newHV ();
187	else
188	sv = NEWSV (0, 0);
189	#ifdef SvPADBUSY
190	if (!SvPADBUSY (sv))
191	#endif
192	SvPADMY_on (sv);
193	npad[ix] = sv;
194	}	197	}
195	}	198	}
196	else if (IS_PADGV (ppad[ix]) \|\| IS_PADCONST (ppad[ix]))	199
197	{	200	SvREFCNT_dec ((SV*)padlist);
198	npad[ix] = SvREFCNT_inc (ppad[ix]);
199	}
200	else
201	{
202	SV *sv = NEWSV (0, 0);
203	SvPADTMP_on (sv);
204	npad[ix] = sv;
205	}
206	}	201	}
		202	}
207		203
208	#if 0 /* return -ENOTUNDERSTOOD */	204	static int
209	/* Now that vars are all in place, clone nested closures. */	205	coro_cv_free (pTHX_ SV sv, MAGIC mg)
		206	{
		207	AV *padlist;
		208	AV av = (AV )mg->mg_obj;
210		209
211	for (ix = fpad; ix > 0; ix--) {	210	/* casting is fun. */
212	SV* namesv = (ix <= fname) ? pname[ix] : Nullsv;	211	while (&PL_sv_undef != (SV )(padlist = (AV )av_pop (av)))
213	if (namesv	212	free_padlist (aTHX_ padlist);
214	&& namesv != &PL_sv_undef	213
215	&& !(SvFLAGS(namesv) & SVf_FAKE)	214	SvREFCNT_dec (av);
216	&& *SvPVX(namesv) == '&'	215
217	&& CvCLONE(ppad[ix]))	216	return 0;
218	{	217	}
219	CV kid = cv_clone((CV)ppad[ix]);	218
220	SvREFCNT_dec(ppad[ix]);	219	#define PERL_MAGIC_coro PERL_MAGIC_ext
221	CvCLONE_on(kid);	220
222	SvPADMY_on(kid);	221	static MGVTBL vtbl_coro = {0, 0, 0, 0, coro_cv_free};
223	npad[ix] = (SV*)kid;	222
224	}	223	/* the next two functions merely cache the padlists */
		224	static void
		225	get_padlist (pTHX_ CV *cv)
		226	{
		227	MAGIC mg = mg_find ((SV )cv, PERL_MAGIC_coro);
		228
		229	if (mg && AvFILLp ((AV *)mg->mg_obj) >= 0)
		230	CvPADLIST (cv) = (AV )av_pop ((AV )mg->mg_obj);
		231	else
		232	{
		233	#if 0
		234	/* this should work - but it doesn't :( */
		235	CV *cp = Perl_cv_clone (aTHX_ cv);
		236	CvPADLIST (cv) = CvPADLIST (cp);
		237	CvPADLIST (cp) = 0;
		238	SvREFCNT_dec (cp);
		239	#else
		240	CvPADLIST (cv) = coro_clone_padlist (aTHX_ cv);
		241	#endif
		242	}
		243	}
		244
		245	static void
		246	put_padlist (pTHX_ CV *cv)
		247	{
		248	MAGIC mg = mg_find ((SV )cv, PERL_MAGIC_coro);
		249
		250	if (!mg)
		251	{
		252	sv_magic ((SV *)cv, 0, PERL_MAGIC_coro, 0, 0);
		253	mg = mg_find ((SV *)cv, PERL_MAGIC_coro);
		254	mg->mg_virtual = &vtbl_coro;
		255	mg->mg_obj = (SV *)newAV ();
225	}	256	}
226	#endif
227		257
228	return newpadlist;
229	}
230
231	#ifdef MAY_FLUSH
232	STATIC void
233	free_padlist (AV *padlist)
234	{
235	/* may be during global destruction */
236	if (SvREFCNT(padlist))
237	{
238	I32 i = AvFILLp(padlist);
239	while (i >= 0)
240	{
241	SV **svp = av_fetch(padlist, i--, FALSE);
242	SV sv = svp ? svp : Nullsv;
243	if (sv)
244	SvREFCNT_dec(sv);
245	}
246
247	SvREFCNT_dec((SV*)padlist);
248	}
249	}
250	#endif
251
252	/* the next two functions merely cache the padlists */
253	STATIC void
254	get_padlist (CV *cv)
255	{
256	SV *he = hv_fetch (padlist_cache, (void )&cv, sizeof (CV *), 0);
257
258	if (he && AvFILLp ((AV )he) >= 0)
259	CvPADLIST (cv) = (AV )av_pop ((AV )*he);
260	else
261	CvPADLIST (cv) = clone_padlist (CvPADLIST (cv));
262	}
263
264	STATIC void
265	put_padlist (CV *cv)
266	{
267	SV *he = hv_fetch (padlist_cache, (void )&cv, sizeof (CV *), 1);
268
269	if (SvTYPE (*he) != SVt_PVAV)
270	{
271	SvREFCNT_dec (*he);
272	he = (SV )newAV ();
273	}
274
275	av_push ((AV )he, (SV *)CvPADLIST (cv));	258	av_push ((AV )mg->mg_obj, (SV )CvPADLIST (cv));
276	}	259	}
277
278	#ifdef MAY_FLUSH
279	STATIC void
280	flush_padlist_cache ()
281	{
282	HV *hv = padlist_cache;
283	padlist_cache = newHV ();
284
285	if (hv_iterinit (hv))
286	{
287	HE *he;
288	AV *padlist;
289
290	while (!!(he = hv_iternext (hv)))
291	{
292	AV av = (AV )HeVAL(he);
293
294	/* casting is fun. */
295	while (&PL_sv_undef != (SV )(padlist = (AV )av_pop (av)))
296	free_padlist (padlist);
297	}
298	}
299
300	SvREFCNT_dec (hv);
301	}
302	#endif
303		260
304	#define SB do {	261	#define SB do {
305	#define SE } while (0)	262	#define SE } while (0)
306		263
307	#define LOAD(state) load_state(aTHX_ (state));	264	#define LOAD(state) load_state(aTHX_ (state));
…		…
320	PL_mainstack = c->mainstack;	277	PL_mainstack = c->mainstack;
321	PL_stack_sp = c->stack_sp;	278	PL_stack_sp = c->stack_sp;
322	PL_op = c->op;	279	PL_op = c->op;
323	PL_curpad = c->curpad;	280	PL_curpad = c->curpad;
324	PL_comppad = c->comppad;	281	PL_comppad = c->comppad;
		282	PL_compcv = c->compcv;
325	PL_stack_base = c->stack_base;	283	PL_stack_base = c->stack_base;
326	PL_stack_max = c->stack_max;	284	PL_stack_max = c->stack_max;
327	PL_tmps_stack = c->tmps_stack;	285	PL_tmps_stack = c->tmps_stack;
328	PL_tmps_floor = c->tmps_floor;	286	PL_tmps_floor = c->tmps_floor;
329	PL_tmps_ix = c->tmps_ix;	287	PL_tmps_ix = c->tmps_ix;
…		…
335	PL_scopestack_ix = c->scopestack_ix;	293	PL_scopestack_ix = c->scopestack_ix;
336	PL_scopestack_max = c->scopestack_max;	294	PL_scopestack_max = c->scopestack_max;
337	PL_savestack = c->savestack;	295	PL_savestack = c->savestack;
338	PL_savestack_ix = c->savestack_ix;	296	PL_savestack_ix = c->savestack_ix;
339	PL_savestack_max = c->savestack_max;	297	PL_savestack_max = c->savestack_max;
		298	#if PERL_VERSION < 9
340	PL_retstack = c->retstack;	299	PL_retstack = c->retstack;
341	PL_retstack_ix = c->retstack_ix;	300	PL_retstack_ix = c->retstack_ix;
342	PL_retstack_max = c->retstack_max;	301	PL_retstack_max = c->retstack_max;
		302	#endif
		303	PL_curpm = c->curpm;
343	PL_curcop = c->curcop;	304	PL_curcop = c->curcop;
344	PL_top_env = c->top_env;	305	PL_top_env = c->top_env;
345		306
346	if (c->defav) REPLACE_SV (GvAV (PL_defgv), c->defav);	307	if (c->defav) REPLACE_SV (GvAV (PL_defgv), c->defav);
347	if (c->defsv) REPLACE_SV (DEFSV , c->defsv);	308	if (c->defsv) REPLACE_SV (DEFSV , c->defsv);
…		…
356	{	317	{
357	AV padlist = (AV )POPs;	318	AV padlist = (AV )POPs;
358		319
359	if (padlist)	320	if (padlist)
360	{	321	{
361	put_padlist (cv); /* mark this padlist as available */	322	put_padlist (aTHX_ cv); /* mark this padlist as available */
362	CvPADLIST(cv) = padlist;	323	CvPADLIST(cv) = padlist;
363	#ifdef USE_THREADS
364	/CvOWNER(cv) = (struct perl_thread )POPs;*/
365	#endif
366	}	324	}
367		325
368	++CvDEPTH(cv);	326	++CvDEPTH(cv);
369	}	327	}
370		328
…		…
397	if (CxTYPE(cx) == CXt_SUB)	355	if (CxTYPE(cx) == CXt_SUB)
398	{	356	{
399	CV *cv = cx->blk_sub.cv;	357	CV *cv = cx->blk_sub.cv;
400	if (CvDEPTH(cv))	358	if (CvDEPTH(cv))
401	{	359	{
402	#ifdef USE_THREADS
403	/XPUSHs ((SV )CvOWNER(cv));*/
404	/CvOWNER(cv) = 0;/
405	/error must unlock this cv etc.. etc.../
406	#endif
407	EXTEND (SP, CvDEPTH(cv)*2);	360	EXTEND (SP, CvDEPTH(cv)*2);
408		361
409	while (--CvDEPTH(cv))	362	while (--CvDEPTH(cv))
410	{	363	{
411	/* this tells the restore code to increment CvDEPTH */	364	/* this tells the restore code to increment CvDEPTH */
…		…
414	}	367	}
415		368
416	PUSHs ((SV *)CvPADLIST(cv));	369	PUSHs ((SV *)CvPADLIST(cv));
417	PUSHs ((SV *)cv);	370	PUSHs ((SV *)cv);
418		371
419	get_padlist (cv); /* this is a monster */	372	get_padlist (aTHX_ cv);
420	}	373	}
421	}	374	}
422	#ifdef CXt_FORMAT	375	#ifdef CXt_FORMAT
423	else if (CxTYPE(cx) == CXt_FORMAT)	376	else if (CxTYPE(cx) == CXt_FORMAT)
424	{	377	{
…		…
452	c->mainstack = PL_mainstack;	405	c->mainstack = PL_mainstack;
453	c->stack_sp = PL_stack_sp;	406	c->stack_sp = PL_stack_sp;
454	c->op = PL_op;	407	c->op = PL_op;
455	c->curpad = PL_curpad;	408	c->curpad = PL_curpad;
456	c->comppad = PL_comppad;	409	c->comppad = PL_comppad;
		410	c->compcv = PL_compcv;
457	c->stack_base = PL_stack_base;	411	c->stack_base = PL_stack_base;
458	c->stack_max = PL_stack_max;	412	c->stack_max = PL_stack_max;
459	c->tmps_stack = PL_tmps_stack;	413	c->tmps_stack = PL_tmps_stack;
460	c->tmps_floor = PL_tmps_floor;	414	c->tmps_floor = PL_tmps_floor;
461	c->tmps_ix = PL_tmps_ix;	415	c->tmps_ix = PL_tmps_ix;
…		…
467	c->scopestack_ix = PL_scopestack_ix;	421	c->scopestack_ix = PL_scopestack_ix;
468	c->scopestack_max = PL_scopestack_max;	422	c->scopestack_max = PL_scopestack_max;
469	c->savestack = PL_savestack;	423	c->savestack = PL_savestack;
470	c->savestack_ix = PL_savestack_ix;	424	c->savestack_ix = PL_savestack_ix;
471	c->savestack_max = PL_savestack_max;	425	c->savestack_max = PL_savestack_max;
		426	#if PERL_VERSION < 9
472	c->retstack = PL_retstack;	427	c->retstack = PL_retstack;
473	c->retstack_ix = PL_retstack_ix;	428	c->retstack_ix = PL_retstack_ix;
474	c->retstack_max = PL_retstack_max;	429	c->retstack_max = PL_retstack_max;
		430	#endif
		431	c->curpm = PL_curpm;
475	c->curcop = PL_curcop;	432	c->curcop = PL_curcop;
476	c->top_env = PL_top_env;	433	c->top_env = PL_top_env;
477	}	434	}
478		435
479	/*	436	/*
480	* allocate various perl stacks. This is an exact copy	437	* allocate various perl stacks. This is an exact copy
481	* of perl.c:init_stacks, except that it uses less memory	438	* of perl.c:init_stacks, except that it uses less memory
482	* on the assumption that coroutines do not usually need	439	* on the (sometimes correct) assumption that coroutines do
483	* a lot of stackspace.	440	* not usually need a lot of stackspace.
484	*/	441	*/
485	STATIC void	442	static void
486	coro_init_stacks (pTHX)	443	coro_init_stacks (pTHX)
487	{	444	{
		445	LOCK;
		446
488	PL_curstackinfo = new_stackinfo(96, 1024/sizeof(PERL_CONTEXT) - 1);	447	PL_curstackinfo = new_stackinfo(96, 1024/sizeof(PERL_CONTEXT) - 1);
489	PL_curstackinfo->si_type = PERLSI_MAIN;	448	PL_curstackinfo->si_type = PERLSI_MAIN;
490	PL_curstack = PL_curstackinfo->si_stack;	449	PL_curstack = PL_curstackinfo->si_stack;
491	PL_mainstack = PL_curstack; /* remember in case we switch stacks */	450	PL_mainstack = PL_curstack; /* remember in case we switch stacks */
492		451
…		…
513		472
514	New(54,PL_savestack,96,ANY);	473	New(54,PL_savestack,96,ANY);
515	PL_savestack_ix = 0;	474	PL_savestack_ix = 0;
516	PL_savestack_max = 96;	475	PL_savestack_max = 96;
517		476
		477	#if PERL_VERSION < 9
518	New(54,PL_retstack,8,OP*);	478	New(54,PL_retstack,8,OP*);
519	PL_retstack_ix = 0;	479	PL_retstack_ix = 0;
520	PL_retstack_max = 8;	480	PL_retstack_max = 8;
		481	#endif
		482
		483	UNLOCK;
521	}	484	}
522		485
523	/*	486	/*
524	* destroy the stacks, the callchain etc...	487	* destroy the stacks, the callchain etc...
525	*/	488	*/
526	STATIC void	489	static void
527	destroy_stacks(pTHX)	490	destroy_stacks(pTHX)
528	{	491	{
529	if (!IN_DESTRUCT)	492	if (!IN_DESTRUCT)
530	{	493	{
531	/* is this ugly, I ask? */	494	/* is this ugly, I ask? */
532	while (PL_scopestack_ix)	495	LEAVE_SCOPE (0);
533	LEAVE;
534		496
535	/* sure it is, but more important: is it correct?? :/ */	497	/* sure it is, but more important: is it correct?? :/ */
536	while (PL_tmps_ix > PL_tmps_floor) /* should only ever be one iteration */
537	FREETMPS;	498	FREETMPS;
		499
		500	/POPSTACK_TO (PL_mainstack);//D//use/
538	}	501	}
539		502
540	while (PL_curstackinfo->si_next)	503	while (PL_curstackinfo->si_next)
541	PL_curstackinfo = PL_curstackinfo->si_next;	504	PL_curstackinfo = PL_curstackinfo->si_next;
542		505
543	while (PL_curstackinfo)	506	while (PL_curstackinfo)
544	{	507	{
545	PERL_SI *p = PL_curstackinfo->si_prev;	508	PERL_SI *p = PL_curstackinfo->si_prev;
546		509
547	{	510	{ /D//remove/
548	dSP;	511	dSP;
549	SWITCHSTACK (PL_curstack, PL_curstackinfo->si_stack);	512	SWITCHSTACK (PL_curstack, PL_curstackinfo->si_stack);
550	PUTBACK; /* possibly superfluous */	513	PUTBACK; /* possibly superfluous */
551	}	514	}
552		515
553	if (!IN_DESTRUCT)	516	if (!IN_DESTRUCT)
554	{	517	{
555	dounwind(-1);	518	dounwind (-1);/D//remove/
556	SvREFCNT_dec(PL_curstackinfo->si_stack);	519	SvREFCNT_dec (PL_curstackinfo->si_stack);
557	}	520	}
558		521
559	Safefree(PL_curstackinfo->si_cxstack);	522	Safefree (PL_curstackinfo->si_cxstack);
560	Safefree(PL_curstackinfo);	523	Safefree (PL_curstackinfo);
561	PL_curstackinfo = p;	524	PL_curstackinfo = p;
562	}	525	}
563		526
564	Safefree(PL_tmps_stack);	527	Safefree (PL_tmps_stack);
565	Safefree(PL_markstack);	528	Safefree (PL_markstack);
566	Safefree(PL_scopestack);	529	Safefree (PL_scopestack);
567	Safefree(PL_savestack);	530	Safefree (PL_savestack);
		531	#if PERL_VERSION < 9
568	Safefree(PL_retstack);	532	Safefree (PL_retstack);
		533	#endif
569	}	534	}
570		535
571	static void	536	static void
572	allocate_stack (Coro__State ctx, int alloc)	537	allocate_stack (Coro__State ctx, int alloc)
573	{	538	{
…		…
576	New (0, stack, 1, coro_stack);	541	New (0, stack, 1, coro_stack);
577		542
578	stack->refcnt = 1;	543	stack->refcnt = 1;
579	stack->usecnt = 1;	544	stack->usecnt = 1;
580	stack->gencnt = ctx->gencnt = 0;	545	stack->gencnt = ctx->gencnt = 0;
		546
581	if (alloc)	547	if (alloc)
582	{	548	{
583	#if HAVE_MMAP	549	#if HAVE_MMAP
584	stack->ssize = 128 * 1024 * sizeof (long); /* mmap should do allocate-on-write for us */	550	stack->ssize = ((STACKSIZE * sizeof (long) + PAGESIZE - 1) / PAGESIZE + STACKGUARD) * PAGESIZE; /* mmap should do allocate-on-write for us */
585	stack->sptr = mmap (0, stack->ssize, PROT_EXEC\|PROT_READ\|PROT_WRITE, MAP_PRIVATE\|MAP_ANONYMOUS, 0, 0);	551	stack->sptr = mmap (0, stack->ssize, PROT_EXEC\|PROT_READ\|PROT_WRITE, MAP_PRIVATE\|MAP_ANONYMOUS, 0, 0);
586	if (stack->sptr == (void *)-1)	552	if (stack->sptr != (void *)-1)
587	#endif
588	{	553	{
589	/FIXME//D//* reasonable stack size! */	554	# if STACKGUARD
		555	mprotect (stack->sptr, STACKGUARD * PAGESIZE, PROT_NONE);
		556	# endif
		557	}
		558	else
		559	#endif
		560	{
590	stack->ssize = -4096 * sizeof (long);	561	stack->ssize = - (STACKSIZE * (long)sizeof (long));
591	New (0, stack->sptr, 4096, long);	562	New (0, stack->sptr, STACKSIZE, long);
592	}	563	}
593	}	564	}
594	else	565	else
595	stack->sptr = 0;	566	stack->sptr = 0;
596		567
…		…
626	setup_coro (void *arg)	597	setup_coro (void *arg)
627	{	598	{
628	/*	599	/*
629	* emulate part of the perl startup here.	600	* emulate part of the perl startup here.
630	*/	601	*/
		602	dTHX;
631	dSP;	603	dSP;
632	Coro__State ctx = (Coro__State)arg;	604	Coro__State ctx = (Coro__State)arg;
633	SV sub_init = (SV)get_cv(SUB_INIT, FALSE);	605	SV sub_init = (SV )get_cv (SUB_INIT, FALSE);
634		606
635	coro_init_stacks (aTHX);	607	coro_init_stacks (aTHX);
636	/PL_curcop = 0;/	608	/PL_curcop = 0;/
637	/PL_in_eval = PL_in_eval;/ /* inherit */	609	/PL_in_eval = PL_in_eval;/ /* inherit */
638	SvREFCNT_dec (GvAV (PL_defgv));	610	SvREFCNT_dec (GvAV (PL_defgv));
…		…
655	}	627	}
656	else	628	else
657	{	629	{
658	UNOP myop;	630	UNOP myop;
659		631
660	PL_op = (OP *)&myop;
661
662	Zero(&myop, 1, UNOP);	632	Zero(&myop, 1, UNOP);
663	myop.op_next = Nullop;	633	myop.op_next = Nullop;
664	myop.op_flags = OPf_WANT_VOID;	634	myop.op_flags = OPf_WANT_VOID;
		635
		636	PL_op = (OP *)&myop;
665		637
666	PUSHMARK(SP);	638	PUSHMARK(SP);
667	XPUSHs (sub_init);	639	XPUSHs (sub_init);
668	/*	640	/*
669	* the next line is slightly wrong, as PL_op->op_next	641	* the next line is slightly wrong, as PL_op->op_next
…		…
684	continue_coro (void *arg)	656	continue_coro (void *arg)
685	{	657	{
686	/*	658	/*
687	* this is a _very_ stripped down perl interpreter ;)	659	* this is a _very_ stripped down perl interpreter ;)
688	*/	660	*/
		661	dTHX;
689	Coro__State ctx = (Coro__State)arg;	662	Coro__State ctx = (Coro__State)arg;
690	JMPENV coro_start_env;
691		663
692	PL_top_env = &ctx->start_env;	664	PL_top_env = &PL_start_env;
693		665
694	ctx->cursp = 0;	666	ctx->cursp = 0;
695	PL_op = PL_op->op_next;	667	PL_op = PL_op->op_next;
696	CALLRUNOPS(aTHX);	668	CALLRUNOPS(aTHX);
697		669
698	abort ();	670	abort ();
699	}	671	}
700		672
701	STATIC void	673	/* never call directly, always through the coro_state_transfer global variable */
		674	static void
702	transfer(pTHX_ struct coro prev, struct coro next, int flags)	675	transfer_impl (pTHX_ struct coro prev, struct coro next, int flags)
703	{	676	{
704	dSTACKLEVEL;	677	dSTACKLEVEL;
705	static struct coro *xnext;
706		678
707	if (prev != next)	679	if (prev != next)
708	{	680	{
709	xnext = next;	681	/* has this coro been created yet? */
710
711	if (next->mainstack)	682	if (next->mainstack)
712	{	683	{
		684	LOCK;
713	SAVE (prev, flags);	685	SAVE (prev, flags);
714	LOAD (next);	686	LOAD (next);
		687	UNLOCK;
715		688
716	/* mark this state as in-use */	689	/* mark this state as in-use */
717	next->mainstack = 0;	690	next->mainstack = 0;
718	next->tmps_ix = -2;	691	next->tmps_ix = -2;
719		692
…		…
738	continue_coro, (void *)next,	711	continue_coro, (void *)next,
739	next->stack->sptr, labs (next->stack->ssize));	712	next->stack->sptr, labs (next->stack->ssize));
740	}	713	}
741		714
742	coro_transfer (&(prev->stack->cctx), &(next->stack->cctx));	715	coro_transfer (&(prev->stack->cctx), &(next->stack->cctx));
		716	prev->cursp = stacklevel;
743	/* don't add any code here */	717	/* don't add any code here */
744	}	718	}
745		719	else
		720	next->cursp = stacklevel;
746	}	721	}
747	else if (next->tmps_ix == -2)	722	else if (next->tmps_ix == -2)
748	croak ("tried to transfer to running coroutine");	723	croak ("tried to transfer to running coroutine");
749	else	724	else
750	{	725	{
		726	LOCK;
751	SAVE (prev, -1); /* first get rid of the old state */	727	SAVE (prev, -1); /* first get rid of the old state */
		728	UNLOCK;
752		729
		730	/* create the coroutine for the first time */
753	if (flags & TRANSFER_SAVE_CCTXT)	731	if (flags & TRANSFER_SAVE_CCTXT)
754	{	732	{
755	if (!prev->stack)	733	if (!prev->stack)
756	allocate_stack (prev, 0);	734	allocate_stack (prev, 0);
757		735
		736	/* the new coroutine starts with start_env again */
		737	PL_top_env = &PL_start_env;
		738
758	if (prev->stack->sptr && flags & TRANSFER_LAZY_STACK)	739	if (prev->stack->sptr && flags & TRANSFER_LAZY_STACK)
759	{	740	{
760	PL_top_env = &next->start_env;
761
762	setup_coro (next);	741	setup_coro (next);
		742	next->cursp = stacklevel;
763		743
764	prev->stack->refcnt++;	744	prev->stack->refcnt++;
765	prev->stack->usecnt++;	745	prev->stack->usecnt++;
766	next->stack = prev->stack;	746	next->stack = prev->stack;
767	next->gencnt = prev->gencnt;	747	next->gencnt = prev->gencnt;
…		…
772	allocate_stack (next, 1);	752	allocate_stack (next, 1);
773	coro_create (&(next->stack->cctx),	753	coro_create (&(next->stack->cctx),
774	setup_coro, (void *)next,	754	setup_coro, (void *)next,
775	next->stack->sptr, labs (next->stack->ssize));	755	next->stack->sptr, labs (next->stack->ssize));
776	coro_transfer (&(prev->stack->cctx), &(next->stack->cctx));	756	coro_transfer (&(prev->stack->cctx), &(next->stack->cctx));
		757	prev->cursp = stacklevel;
777	/* don't add any code here */	758	/* don't add any code here */
778	}	759	}
779	}	760	}
780	else	761	else
		762	{
781	setup_coro (next);	763	setup_coro (next);
		764	next->cursp = stacklevel;
		765	}
782	}	766	}
783
784	/*
785	* xnext is now either prev or next, depending on wether
786	* we switched the c stack or not. that's why I use a global
787	* variable, that should become thread-specific at one point.
788	*/
789	xnext->cursp = stacklevel;
790	}	767	}
791		768
		769	LOCK;
792	if (coro_mortal)	770	if (coro_mortal)
793	{	771	{
794	SvREFCNT_dec (coro_mortal);	772	SvREFCNT_dec (coro_mortal);
795	coro_mortal = 0;	773	coro_mortal = 0;
796	}	774	}
		775	UNLOCK;
797	}	776	}
798		777
799	#define SV_CORO(sv,func) \	778	/* use this function pointer to call the above function */
800	do { \	779	/* this is done to increase chances of the compiler not inlining the call */
801	if (SvROK (sv)) \	780	void (coro_state_transfer)(pTHX_ struct coro prev, struct coro *next, int flags) = transfer_impl;
802	sv = SvRV (sv); \
803	\
804	if (SvTYPE(sv) == SVt_PVHV) \
805	{ \
806	HE he = hv_fetch_ent((HV )sv, ucoro_state_sv, 0, ucoro_state_hash); \
807	\
808	if (!he) \
809	croak ("%s() -- %s is a hashref but lacks the " UCORO_STATE " key", func, # sv); \
810	\
811	(sv) = SvRV (HeVAL(he)); \
812	} \
813	\
814	/* must also be changed inside Coro::Cont::yield */ \
815	if (!SvOBJECT(sv) \|\| SvSTASH(sv) != coro_state_stash) \
816	croak ("%s() -- %s is not (and contains not) a Coro::State object", func, # sv); \
817	\
818	} while(0)
819		781
820	#define SvSTATE(sv) (struct coro *)SvIV (sv)	782	static void
		783	coro_state_destroy (struct coro *coro)
		784	{
		785	if (coro->refcnt--)
		786	return;
821		787
		788	if (coro->mainstack && coro->mainstack != main_mainstack)
		789	{
		790	struct coro temp;
		791
		792	SAVE (aTHX_ (&temp), TRANSFER_SAVE_ALL);
		793	LOAD (aTHX_ coro);
		794
		795	destroy_stacks (aTHX);
		796
		797	LOAD ((&temp)); /* this will get rid of defsv etc.. */
		798
		799	coro->mainstack = 0;
		800	}
		801
		802	deallocate_stack (coro);
		803	SvREFCNT_dec (coro->args);
		804	Safefree (coro);
		805	}
		806
822	static void	807	static int
		808	coro_state_clear (SV sv, MAGIC mg)
		809	{
		810	struct coro coro = (struct coro )mg->mg_ptr;
		811	mg->mg_ptr = 0;
		812
		813	coro_state_destroy (coro);
		814
		815	return 0;
		816	}
		817
		818	static int
		819	coro_state_dup (MAGIC mg, CLONE_PARAMS params)
		820	{
		821	struct coro coro = (struct coro )mg->mg_ptr;
		822
		823	++coro->refcnt;
		824
		825	return 0;
		826	}
		827
		828	static MGVTBL coro_state_vtbl = { 0, 0, 0, 0, coro_state_clear, 0, coro_state_dup, 0 };
		829
		830	static struct coro *
		831	SvSTATE (SV *coro)
		832	{
		833	HV *stash;
		834	MAGIC *mg;
		835
		836	if (SvROK (coro))
		837	coro = SvRV (coro);
		838
		839	stash = SvSTASH (coro);
		840	if (stash != coro_stash && stash != coro_state_stash)
		841	{
		842	/* very slow, but rare, check */
		843	if (!sv_derived_from (sv_2mortal (newRV_inc (coro)), "Coro::State"))
		844	croak ("Coro::State object required");
		845	}
		846
		847	mg = SvMAGIC (coro);
		848	assert (mg->mg_type == PERL_MAGIC_ext);
		849	return (struct coro *)mg->mg_ptr;
		850	}
		851
		852	static void
823	api_transfer(pTHX_ SV prev, SV next, int flags)	853	api_transfer (pTHX_ SV prev, SV next, int flags)
824	{	854	{
825	SV_CORO (prev, "Coro::transfer");
826	SV_CORO (next, "Coro::transfer");
827
828	transfer(aTHX_ SvSTATE(prev), SvSTATE(next), flags);	855	coro_state_transfer (aTHX_ SvSTATE (prev), SvSTATE (next), flags);
829	}	856	}
830		857
831	/ Coro ******************************************************************/	858	/ Coro ******************************************************************/
832		859
833	#define PRIO_MAX 3	860	#define PRIO_MAX 3
…		…
837	#define PRIO_IDLE -3	864	#define PRIO_IDLE -3
838	#define PRIO_MIN -4	865	#define PRIO_MIN -4
839		866
840	/* for Coro.pm */	867	/* for Coro.pm */
841	static GV coro_current, coro_idle;	868	static GV coro_current, coro_idle;
842	static AV *coro_ready[PRIO_MAX-PRIO_MIN+1];	869	static AV *coro_ready [PRIO_MAX-PRIO_MIN+1];
843	static int coro_nready;	870	static int coro_nready;
844		871
845	static void	872	static void
846	coro_enq (SV *sv)	873	coro_enq (pTHX_ SV *sv)
847	{	874	{
		875	int prio;
		876
848	if (SvTYPE (sv) == SVt_PVHV)	877	if (SvTYPE (sv) != SVt_PVHV)
849	{
850	SV *xprio = hv_fetch ((HV )sv, "prio", 4, 0);
851	int prio = xprio ? SvIV (*xprio) : PRIO_NORMAL;
852
853	prio = prio > PRIO_MAX ? PRIO_MAX
854	: prio < PRIO_MIN ? PRIO_MIN
855	: prio;
856
857	av_push (coro_ready [prio - PRIO_MIN], sv);
858	coro_nready++;
859
860	return;
861	}
862
863	croak ("Coro::ready tried to enqueue something that is not a coroutine");	878	croak ("Coro::ready tried to enqueue something that is not a coroutine");
		879
		880	prio = SvSTATE (sv)->prio;
		881
		882	av_push (coro_ready [prio - PRIO_MIN], sv);
		883	coro_nready++;
864	}	884	}
865		885
866	static SV *	886	static SV *
867	coro_deq (int min_prio)	887	coro_deq (pTHX_ int min_prio)
868	{	888	{
869	int prio = PRIO_MAX - PRIO_MIN;	889	int prio = PRIO_MAX - PRIO_MIN;
870		890
871	min_prio -= PRIO_MIN;	891	min_prio -= PRIO_MIN;
872	if (min_prio < 0)	892	if (min_prio < 0)
873	min_prio = 0;	893	min_prio = 0;
874		894
875	for (prio = PRIO_MAX - PRIO_MIN + 1; --prio >= min_prio; )	895	for (prio = PRIO_MAX - PRIO_MIN + 1; --prio >= min_prio; )
876	if (av_len (coro_ready[prio]) >= 0)	896	if (AvFILLp (coro_ready [prio]) >= 0)
877	{	897	{
878	coro_nready--;	898	coro_nready--;
879	return av_shift (coro_ready[prio]);	899	return av_shift (coro_ready [prio]);
880	}	900	}
881		901
882	return 0;	902	return 0;
883	}	903	}
884		904
885	static void	905	static void
886	api_ready (SV *coro)	906	api_ready (SV *coro)
887	{	907	{
		908	dTHX;
		909
888	if (SvROK (coro))	910	if (SvROK (coro))
889	coro = SvRV (coro);	911	coro = SvRV (coro);
890		912
		913	LOCK;
891	coro_enq (SvREFCNT_inc (coro));	914	coro_enq (aTHX_ SvREFCNT_inc (coro));
		915	UNLOCK;
892	}	916	}
893		917
894	static void	918	static void
895	api_schedule (void)	919	api_schedule (void)
896	{	920	{
		921	dTHX;
		922
897	SV prev, next;	923	SV prev, next;
898
899	prev = SvRV (GvSV (coro_current));	924	SV *current = GvSV (coro_current);
		925
		926	for (;;)
		927	{
		928	LOCK;
		929
900	next = coro_deq (PRIO_MIN);	930	next = coro_deq (aTHX_ PRIO_MIN);
901		931
902	if (!next)	932	if (next)
903	next = SvREFCNT_inc (SvRV (GvSV (coro_idle)));	933	break;
		934
		935	UNLOCK;
		936
		937	{
		938	dSP;
		939
		940	ENTER;
		941	SAVETMPS;
		942
		943	PUSHMARK (SP);
		944	PUTBACK;
		945	call_sv (GvSV (coro_idle), G_DISCARD);
		946
		947	FREETMPS;
		948	LEAVE;
		949	}
		950	}
		951
		952	prev = SvRV (current);
		953	SvRV (current) = next;
904		954
905	/* free this only after the transfer */	955	/* free this only after the transfer */
906	coro_mortal = prev;	956	coro_mortal = prev;
907	SV_CORO (prev, "Coro::schedule");
908		957
909	SvRV (GvSV (coro_current)) = next;	958	UNLOCK;
910		959
911	SV_CORO (next, "Coro::schedule");
912
913	transfer (aTHX_ SvSTATE (prev), SvSTATE (next),	960	coro_state_transfer (aTHX_ SvSTATE (prev), SvSTATE (next),
914	TRANSFER_SAVE_ALL \| TRANSFER_LAZY_STACK);	961	TRANSFER_SAVE_ALL \| TRANSFER_LAZY_STACK);
915	}	962	}
916		963
917	static void	964	static void
918	api_cede (void)	965	api_cede (void)
919	{	966	{
		967	dTHX;
		968
		969	LOCK;
920	coro_enq (SvREFCNT_inc (SvRV (GvSV (coro_current))));	970	coro_enq (aTHX_ SvREFCNT_inc (SvRV (GvSV (coro_current))));
		971	UNLOCK;
921		972
922	api_schedule ();	973	api_schedule ();
923	}	974	}
924		975
925	MODULE = Coro::State PACKAGE = Coro::State	976	MODULE = Coro::State PACKAGE = Coro::State
926		977
927	PROTOTYPES: ENABLE	978	PROTOTYPES: DISABLE
928		979
929	BOOT:	980	BOOT:
930	{ /* {} necessary for stoopid perl-5.6.x */	981	{
931	ucoro_state_sv = newSVpv (UCORO_STATE, sizeof(UCORO_STATE) - 1);	982	#ifdef USE_ITHREADS
932	PERL_HASH(ucoro_state_hash, UCORO_STATE, sizeof(UCORO_STATE) - 1);	983	MUTEX_INIT (&coro_mutex);
		984	#endif
		985	BOOT_PAGESIZE;
		986
933	coro_state_stash = gv_stashpv ("Coro::State", TRUE);	987	coro_state_stash = gv_stashpv ("Coro::State", TRUE);
934		988
935	newCONSTSUB (coro_state_stash, "SAVE_DEFAV", newSViv (TRANSFER_SAVE_DEFAV));	989	newCONSTSUB (coro_state_stash, "SAVE_DEFAV", newSViv (TRANSFER_SAVE_DEFAV));
936	newCONSTSUB (coro_state_stash, "SAVE_DEFSV", newSViv (TRANSFER_SAVE_DEFSV));	990	newCONSTSUB (coro_state_stash, "SAVE_DEFSV", newSViv (TRANSFER_SAVE_DEFSV));
937	newCONSTSUB (coro_state_stash, "SAVE_ERRSV", newSViv (TRANSFER_SAVE_ERRSV));	991	newCONSTSUB (coro_state_stash, "SAVE_ERRSV", newSViv (TRANSFER_SAVE_ERRSV));
938	newCONSTSUB (coro_state_stash, "SAVE_CCTXT", newSViv (TRANSFER_SAVE_CCTXT));	992	newCONSTSUB (coro_state_stash, "SAVE_CCTXT", newSViv (TRANSFER_SAVE_CCTXT));
939		993
940	if (!padlist_cache)
941	padlist_cache = newHV ();
942
943	main_mainstack = PL_mainstack;	994	main_mainstack = PL_mainstack;
944		995
945	coroapi.ver = CORO_API_VERSION;	996	coroapi.ver = CORO_API_VERSION;
946	coroapi.transfer = api_transfer;	997	coroapi.transfer = api_transfer;
947	}
948		998
949	Coro::State	999	assert (("PRIO_NORMAL must be 0", !PRIO_NORMAL));
950	_newprocess(args)	1000	}
951	SV * args	1001
952	PROTOTYPE: $	1002	SV *
		1003	new (char *klass, ...)
953	CODE:	1004	CODE:
954	Coro__State coro;	1005	{
		1006	struct coro *coro;
		1007	HV *hv;
		1008	int i;
955		1009
956	if (!SvROK (args) \|\| SvTYPE (SvRV (args)) != SVt_PVAV)
957	croak ("Coro::State::_newprocess expects an arrayref");
958
959	Newz (0, coro, 1, struct coro);	1010	Newz (0, coro, 1, struct coro);
		1011	coro->args = newAV ();
960		1012
961	coro->args = (AV *)SvREFCNT_inc (SvRV (args));	1013	for (i = 1; i < items; i++)
		1014	av_push (coro->args, newSVsv (ST (i)));
		1015
962	coro->mainstack = 0; /* actual work is done inside transfer */	1016	/coro->mainstack = 0; //actual work is done inside transfer /
963	coro->stack = 0;	1017	/coro->stack = 0;/
964		1018
965	/* same as JMPENV_BOOTSTRAP */	1019	hv = newHV ();
966	/* we might be able to recycle start_env, but safe is safe */	1020	sv_magicext ((SV )hv, 0, PERL_MAGIC_ext, &coro_state_vtbl, (char )coro, 0)->mg_flags \|= MGf_DUP;
967	//Zero(&coro->start_env, 1, JMPENV);	1021	RETVAL = sv_bless (newRV_noinc ((SV *)hv), gv_stashpv (klass, 1));
968	coro->start_env.je_ret = -1;	1022	}
969	coro->start_env.je_mustcatch = TRUE;
970
971	RETVAL = coro;
972	OUTPUT:	1023	OUTPUT:
973	RETVAL	1024	RETVAL
974		1025
975	void	1026	void
976	transfer(prev, next, flags)	1027	transfer(prev, next, flags)
977	SV *prev	1028	SV *prev
978	SV *next	1029	SV *next
979	int flags	1030	int flags
980	PROTOTYPE: @
981	CODE:	1031	CODE:
982	PUTBACK;	1032	PUTBACK;
983	SV_CORO (next, "Coro::transfer");
984	SV_CORO (prev, "Coro::transfer");
985	transfer (aTHX_ SvSTATE (prev), SvSTATE (next), flags);	1033	coro_state_transfer (aTHX_ SvSTATE (prev), SvSTATE (next), flags);
986	SPAGAIN;	1034	SPAGAIN;
987		1035
		1036	int
		1037	prio (Coro::State coro, int newprio = 0)
		1038	ALIAS:
		1039	nice = 1
		1040	CODE:
		1041	{
		1042	RETVAL = coro->prio;
		1043
		1044	if (items > 1)
		1045	{
		1046	if (ix)
		1047	newprio += coro->prio;
		1048
		1049	if (newprio < PRIO_MIN) newprio = PRIO_MIN;
		1050	if (newprio > PRIO_MAX) newprio = PRIO_MAX;
		1051
		1052	coro->prio = newprio;
		1053	}
		1054	}
		1055
988	void	1056	void
989	DESTROY(coro)	1057	_clone_state_from (SV dst, SV src)
990	Coro::State coro	1058	CODE:
991	CODE:	1059	{
		1060	struct coro *coro_src = SvSTATE (src);
992		1061
993	if (coro->mainstack && coro->mainstack != main_mainstack)	1062	sv_unmagic (SvRV (dst), PERL_MAGIC_ext);
994	{
995	struct coro temp;
996		1063
997	PUTBACK;	1064	++coro_src->refcnt;
998	SAVE(aTHX_ (&temp), TRANSFER_SAVE_ALL);	1065	sv_magicext (SvRV (dst), 0, PERL_MAGIC_ext, &coro_state_vtbl, (char *)coro_src, 0)->mg_flags \|= MGf_DUP;
999	LOAD(aTHX_ coro);	1066	}
1000	SPAGAIN;
1001
1002	destroy_stacks (aTHX);
1003
1004	LOAD((&temp)); /* this will get rid of defsv etc.. */
1005	SPAGAIN;
1006
1007	coro->mainstack = 0;
1008	}
1009
1010	deallocate_stack (coro);
1011	SvREFCNT_dec (coro->args);
1012	Safefree (coro);
1013		1067
1014	void	1068	void
1015	flush()
1016	CODE:
1017	#ifdef MAY_FLUSH
1018	flush_padlist_cache ();
1019	#endif
1020
1021	void
1022	_exit(code)	1069	_exit (code)
1023	int code	1070	int code
1024	PROTOTYPE: $	1071	PROTOTYPE: $
1025	CODE:	1072	CODE:
1026	#if defined(__GLIBC__) \|\| _POSIX_C_SOURCE
1027	_exit (code);	1073	_exit (code);
1028	#else
1029	signal (SIGTERM, SIG_DFL);
1030	raise (SIGTERM);
1031	exit (code);
1032	#endif
1033		1074
1034	MODULE = Coro::State PACKAGE = Coro::Cont	1075	MODULE = Coro::State PACKAGE = Coro::Cont
1035		1076
1036	# this is slightly dirty (should expose a c-level api)
1037
1038	void	1077	void
1039	yield(...)	1078	yield (...)
1040	PROTOTYPE: @	1079	PROTOTYPE: @
1041	CODE:	1080	CODE:
1042	static SV *returnstk;	1081	{
		1082	SV *yieldstack;
1043	SV *sv;	1083	SV *sv;
1044	AV *defav = GvAV (PL_defgv);	1084	AV *defav = GvAV (PL_defgv);
1045	struct coro prev, next;	1085	struct coro prev, next;
1046		1086
1047	if (!returnstk)	1087	yieldstack = *hv_fetch (
1048	returnstk = SvRV ((SV *)get_sv ("Coro::Cont::return", FALSE));	1088	(HV *)SvRV (GvSV (coro_current)),
		1089	"yieldstack", sizeof ("yieldstack") - 1,
		1090	0
		1091	);
1049		1092
1050	/* set up @_ -- ugly */	1093	/* set up @_ -- ugly */
1051	av_clear (defav);	1094	av_clear (defav);
1052	av_fill (defav, items - 1);	1095	av_fill (defav, items - 1);
1053	while (items--)	1096	while (items--)
1054	av_store (defav, items, SvREFCNT_inc (ST(items)));	1097	av_store (defav, items, SvREFCNT_inc (ST(items)));
1055		1098
1056	mg_get (returnstk); /* isn't documentation wrong for mg_get? */
1057	sv = av_pop ((AV *)SvRV (returnstk));	1099	sv = av_pop ((AV *)SvRV (yieldstack));
1058	prev = (struct coro )SvIV ((SV)SvRV (av_fetch ((AV )SvRV (sv), 0, 0)));	1100	prev = SvSTATE (av_fetch ((AV )SvRV (sv), 0, 0));
1059	next = (struct coro )SvIV ((SV)SvRV (av_fetch ((AV )SvRV (sv), 1, 0)));	1101	next = SvSTATE (av_fetch ((AV )SvRV (sv), 1, 0));
1060	SvREFCNT_dec (sv);	1102	SvREFCNT_dec (sv);
1061		1103
1062	transfer(aTHX_ prev, next, 0);	1104	coro_state_transfer (aTHX_ prev, next, 0);
		1105	}
1063		1106
1064	MODULE = Coro::State PACKAGE = Coro	1107	MODULE = Coro::State PACKAGE = Coro
1065		1108
1066	# this is slightly dirty (should expose a c-level api)
1067
1068	BOOT:	1109	BOOT:
1069	{	1110	{
1070	int i;	1111	int i;
		1112
1071	HV *stash = gv_stashpv ("Coro", TRUE);	1113	coro_stash = gv_stashpv ("Coro", TRUE);
1072		1114
1073	newCONSTSUB (stash, "PRIO_MAX", newSViv (PRIO_MAX));	1115	newCONSTSUB (coro_stash, "PRIO_MAX", newSViv (PRIO_MAX));
1074	newCONSTSUB (stash, "PRIO_HIGH", newSViv (PRIO_HIGH));	1116	newCONSTSUB (coro_stash, "PRIO_HIGH", newSViv (PRIO_HIGH));
1075	newCONSTSUB (stash, "PRIO_NORMAL", newSViv (PRIO_NORMAL));	1117	newCONSTSUB (coro_stash, "PRIO_NORMAL", newSViv (PRIO_NORMAL));
1076	newCONSTSUB (stash, "PRIO_LOW", newSViv (PRIO_LOW));	1118	newCONSTSUB (coro_stash, "PRIO_LOW", newSViv (PRIO_LOW));
1077	newCONSTSUB (stash, "PRIO_IDLE", newSViv (PRIO_IDLE));	1119	newCONSTSUB (coro_stash, "PRIO_IDLE", newSViv (PRIO_IDLE));
1078	newCONSTSUB (stash, "PRIO_MIN", newSViv (PRIO_MIN));	1120	newCONSTSUB (coro_stash, "PRIO_MIN", newSViv (PRIO_MIN));
1079		1121
1080	coro_current = gv_fetchpv ("Coro::current", TRUE, SVt_PV);	1122	coro_current = gv_fetchpv ("Coro::current", TRUE, SVt_PV);
1081	coro_idle = gv_fetchpv ("Coro::idle" , TRUE, SVt_PV);	1123	coro_idle = gv_fetchpv ("Coro::idle" , TRUE, SVt_PV);
1082		1124
1083	for (i = PRIO_MAX - PRIO_MIN + 1; i--; )	1125	for (i = PRIO_MAX - PRIO_MIN + 1; i--; )
…		…
1091	coroapi.ready = api_ready;	1133	coroapi.ready = api_ready;
1092	coroapi.nready = &coro_nready;	1134	coroapi.nready = &coro_nready;
1093	coroapi.current = coro_current;	1135	coroapi.current = coro_current;
1094		1136
1095	GCoroAPI = &coroapi;	1137	GCoroAPI = &coroapi;
1096	sv_setiv(sv, (IV)&coroapi);	1138	sv_setiv (sv, (IV)&coroapi);
1097	SvREADONLY_on(sv);	1139	SvREADONLY_on (sv);
1098	}	1140	}
1099	}	1141	}
1100		1142
		1143	#if !PERL_MICRO
		1144
1101	void	1145	void
1102	ready(self)	1146	ready (self)
1103	SV * self	1147	SV * self
1104	PROTOTYPE: $	1148	PROTOTYPE: $
1105	CODE:	1149	CODE:
1106	api_ready (self);	1150	api_ready (self);
1107		1151
		1152	#endif
		1153
1108	int	1154	int
1109	nready(...)	1155	nready (...)
1110	PROTOTYPE:	1156	PROTOTYPE:
1111	CODE:	1157	CODE:
1112	RETVAL = coro_nready;	1158	RETVAL = coro_nready;
1113	OUTPUT:	1159	OUTPUT:
1114	RETVAL	1160	RETVAL
1115		1161
1116	void	1162	void
1117	schedule(...)	1163	schedule (...)
1118	PROTOTYPE:	1164	PROTOTYPE:
1119	CODE:	1165	CODE:
1120	api_schedule ();	1166	api_schedule ();
1121		1167
1122	void	1168	void
1123	cede(...)	1169	cede (...)
1124	PROTOTYPE:	1170	PROTOTYPE:
1125	CODE:	1171	CODE:
1126	api_cede ();	1172	api_cede ();
1127		1173
		1174	# and these are hacks
		1175	SV *
		1176	_aio_get_state ()
		1177	CODE:
		1178	{
		1179	struct {
		1180	int errorno;
		1181	int laststype;
		1182	int laststatval;
		1183	Stat_t statcache;
		1184	} data;
		1185
		1186	data.errorno = errno;
		1187	data.laststype = PL_laststype;
		1188	data.laststatval = PL_laststatval;
		1189	data.statcache = PL_statcache;
		1190
		1191	RETVAL = newSVpvn ((char *)&data, sizeof data);
		1192	}
		1193	OUTPUT:
		1194	RETVAL
		1195
		1196	void
		1197	_aio_set_state (char *data_)
		1198	PROTOTYPE: $
		1199	CODE:
		1200	{
		1201	struct {
		1202	int errorno;
		1203	int laststype;
		1204	int laststatval;
		1205	Stat_t statcache;
		1206	} data = (void )data_;
		1207
		1208	errno = data->errorno;
		1209	PL_laststype = data->laststype;
		1210	PL_laststatval = data->laststatval;
		1211	PL_statcache = data->statcache;
		1212	}

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Comparing Coro/Coro/State.xs (file contents): Revision 1.49 by pcg, Sun Nov 23 03:34:13 2003 UTC vs. Revision 1.88 by root, Fri Nov 24 15:34:33 2006 UTC

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Comparing Coro/Coro/State.xs (file contents):
Revision 1.49 by pcg, Sun Nov 23 03:34:13 2003 UTC vs.
Revision 1.88 by root, Fri Nov 24 15:34:33 2006 UTC