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

Comparing Coro/Coro/State.xs (file contents):
Revision 1.88 by root, Fri Nov 24 15:34:33 2006 UTC vs.
Revision 1.110 by root, Tue Nov 28 23:08:07 2006 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	#if USE_VALGRIND
		10	# include <valgrind/valgrind.h>
		11	#endif
		12
		13	#define PERL_VERSION_ATLEAST(a,b,c) \
		14	(PERL_REVISION > (a) \
		15	\|\| (PERL_REVISION == (a) \
		16	&& (PERL_VERSION > (b) \
		17	\|\| (PERL_VERSION == (b) && PERLSUBVERSION >= (c)))))
		18
		19	#if !PERL_VERSION_ATLEAST (5,6,0)
12	# ifndef PL_ppaddr	20	# ifndef PL_ppaddr
13	# define PL_ppaddr ppaddr	21	# define PL_ppaddr ppaddr
14	# endif	22	# endif
15	# ifndef call_sv	23	# ifndef call_sv
16	# define call_sv perl_call_sv	24	# define call_sv perl_call_sv
27	# ifndef IS_PADCONST	35	# ifndef IS_PADCONST
28	# define IS_PADCONST(v) 0	36	# define IS_PADCONST(v) 0
29	# endif	37	# endif
30	#endif	38	#endif
31		39
		40	#include <stdio.h>
32	#include <errno.h>	41	#include <errno.h>
33		42
34	#if !__i386 && !__x86_64 && !__powerpc && !__m68k && !__alpha && !__mips && !__sparc64	43	#if !__i386 && !__x86_64 && !__powerpc && !__m68k && !__alpha && !__mips && !__sparc64
35	# undef STACKGUARD	44	# undef STACKGUARD
36	#endif	45	#endif
…		…
53	# ifndef PAGESIZE	62	# ifndef PAGESIZE
54	# define PAGESIZE pagesize	63	# define PAGESIZE pagesize
55	# define BOOT_PAGESIZE pagesize = sysconf (_SC_PAGESIZE)	64	# define BOOT_PAGESIZE pagesize = sysconf (_SC_PAGESIZE)
56	static long pagesize;	65	static long pagesize;
57	# else	66	# else
58	# define BOOT_PAGESIZE	67	# define BOOT_PAGESIZE (void)0
59	# endif	68	# endif
		69	#else
		70	# define PAGESIZE 0
		71	# define BOOT_PAGESIZE (void)0
60	#endif	72	#endif
61
62	#define SUB_INIT "Coro::State::initialize"
63		73
64	/* The next macro should declare a variable stacklevel that contains and approximation	74	/* The next macro should declare a variable stacklevel that contains and approximation
65	* to the current C stack pointer. Its property is that it changes with each call	75	* to the current C stack pointer. Its property is that it changes with each call
66	* and should be unique. */	76	* and should be unique. */
		77	#define dSTACKLEVEL int stacklevel
67	#define dSTACKLEVEL void *stacklevel = &stacklevel	78	#define STACKLEVEL ((void *)&stacklevel)
68		79
69	#define IN_DESTRUCT (PL_main_cv == Nullcv)	80	#define IN_DESTRUCT (PL_main_cv == Nullcv)
70		81
71	#define labs(l) ((l) >= 0 ? (l) : -(l))	82	#if __GNUC__ >= 3
		83	# define attribute(x) __attribute__(x)
		84	#else
		85	# define attribute(x)
		86	#endif
		87
		88	#define NOINLINE attribute ((noinline))
72		89
73	#include "CoroAPI.h"	90	#include "CoroAPI.h"
		91
		92	#define TRANSFER_SET_STACKLEVEL 0x8bfbfbfb /* magic cookie */
74		93
75	#ifdef USE_ITHREADS	94	#ifdef USE_ITHREADS
76	static perl_mutex coro_mutex;	95	static perl_mutex coro_mutex;
77	# define LOCK do { MUTEX_LOCK (&coro_mutex); } while (0)	96	# define LOCK do { MUTEX_LOCK (&coro_mutex); } while (0)
78	# define UNLOCK do { MUTEX_UNLOCK (&coro_mutex); } while (0)	97	# define UNLOCK do { MUTEX_UNLOCK (&coro_mutex); } while (0)
…		…
84	static struct CoroAPI coroapi;	103	static struct CoroAPI coroapi;
85	static AV main_mainstack; / used to differentiate between $main and others */	104	static AV main_mainstack; / used to differentiate between $main and others */
86	static HV coro_state_stash, coro_stash;	105	static HV coro_state_stash, coro_stash;
87	static SV coro_mortal; / will be freed after next transfer */	106	static SV coro_mortal; / will be freed after next transfer */
88		107
89	/* this is actually not only the c stack but also c registers etc... */	108	static struct coro_cctx *cctx_first;
		109	static int cctx_count, cctx_idle;
		110
		111	/* this is a structure representing a c-level coroutine */
90	typedef struct {	112	typedef struct coro_cctx {
91	int refcnt; /* pointer reference counter */	113	struct coro_cctx *next;
92	int usecnt; /* shared by how many coroutines */
93	int gencnt; /* generation counter */
94		114
95	coro_context cctx;	115	/* the stack */
96
97	void *sptr;	116	void *sptr;
98	long ssize; /* positive == mmap, otherwise malloc */	117	long ssize; /* positive == mmap, otherwise malloc */
99	} coro_stack;
100		118
		119	/* cpu state */
		120	void idle_sp; / sp of top-level transfer/schedule/cede call */
		121	JMPENV *top_env;
		122	coro_context cctx;
		123
		124	#if USE_VALGRIND
		125	int valgrind_id;
		126	#endif
		127	} coro_cctx;
		128
		129	/* this is a structure representing a perl-level coroutine */
101	struct coro {	130	struct coro {
102	/* the optional C context */	131	/* the c coroutine allocated to this perl coroutine, if any */
103	coro_stack *stack;	132	coro_cctx *cctx;
104	void *cursp;	133
		134	/* data associated with this coroutine (initial args) */
		135	AV *args;
105	int gencnt;	136	int refcnt;
106		137
107	/* optionally saved, might be zero */	138	/* optionally saved, might be zero */
108	AV *defav;	139	AV *defav;
109	SV *defsv;	140	SV *defsv;
110	SV *errsv;	141	SV *errsv;
111		142
112	/* saved global state not related to stacks */	143	#define VAR(name,type) type name;
113	U8 dowarn;	144	# include "state.h"
114	I32 in_eval;	145	#undef VAR
115
116	/* the stacks and related info (callchain etc..) */
117	PERL_SI *curstackinfo;
118	AV *curstack;
119	AV *mainstack;
120	SV **stack_sp;
121	OP *op;
122	SV **curpad;
123	AV *comppad;
124	CV *compcv;
125	SV **stack_base;
126	SV **stack_max;
127	SV **tmps_stack;
128	I32 tmps_floor;
129	I32 tmps_ix;
130	I32 tmps_max;
131	I32 *markstack;
132	I32 *markstack_ptr;
133	I32 *markstack_max;
134	I32 *scopestack;
135	I32 scopestack_ix;
136	I32 scopestack_max;
137	ANY *savestack;
138	I32 savestack_ix;
139	I32 savestack_max;
140	OP **retstack;
141	I32 retstack_ix;
142	I32 retstack_max;
143	PMOP *curpm;
144	COP *curcop;
145	JMPENV *top_env;
146		146
147	/* coro process data */	147	/* coro process data */
148	int prio;	148	int prio;
149
150	/* data associated with this coroutine (initial args) */
151	AV *args;
152	int refcnt;
153	};	149	};
154		150
155	typedef struct coro *Coro__State;	151	typedef struct coro *Coro__State;
156	typedef struct coro *Coro__State_or_hashref;	152	typedef struct coro *Coro__State_or_hashref;
157		153
158	static AV *	154	static AV *
159	coro_clone_padlist (pTHX_ CV *cv)	155	coro_clone_padlist (CV *cv)
160	{	156	{
161	AV *padlist = CvPADLIST (cv);	157	AV *padlist = CvPADLIST (cv);
162	AV newpadlist, newpad;	158	AV newpadlist, newpad;
163		159
164	newpadlist = newAV ();	160	newpadlist = newAV ();
165	AvREAL_off (newpadlist);	161	AvREAL_off (newpadlist);
166	#if PERL_VERSION < 9	162	#if PERL_VERSION_ATLEAST (5,9,0)
		163	Perl_pad_push (aTHX_ padlist, AvFILLp (padlist) + 1);
		164	#else
167	Perl_pad_push (aTHX_ padlist, AvFILLp (padlist) + 1, 1);	165	Perl_pad_push (aTHX_ padlist, AvFILLp (padlist) + 1, 1);
168	#else
169	Perl_pad_push (aTHX_ padlist, AvFILLp (padlist) + 1);
170	#endif	166	#endif
171	newpad = (AV *)AvARRAY (padlist)[AvFILLp (padlist)];	167	newpad = (AV *)AvARRAY (padlist)[AvFILLp (padlist)];
172	--AvFILLp (padlist);	168	--AvFILLp (padlist);
173		169
174	av_store (newpadlist, 0, SvREFCNT_inc (*av_fetch (padlist, 0, FALSE)));	170	av_store (newpadlist, 0, SvREFCNT_inc (*av_fetch (padlist, 0, FALSE)));
…		…
176		172
177	return newpadlist;	173	return newpadlist;
178	}	174	}
179		175
180	static void	176	static void
181	free_padlist (pTHX_ AV *padlist)	177	free_padlist (AV *padlist)
182	{	178	{
183	/* may be during global destruction */	179	/* may be during global destruction */
184	if (SvREFCNT (padlist))	180	if (SvREFCNT (padlist))
185	{	181	{
186	I32 i = AvFILLp (padlist);	182	I32 i = AvFILLp (padlist);
…		…
207	AV *padlist;	203	AV *padlist;
208	AV av = (AV )mg->mg_obj;	204	AV av = (AV )mg->mg_obj;
209		205
210	/* casting is fun. */	206	/* casting is fun. */
211	while (&PL_sv_undef != (SV )(padlist = (AV )av_pop (av)))	207	while (&PL_sv_undef != (SV )(padlist = (AV )av_pop (av)))
212	free_padlist (aTHX_ padlist);	208	free_padlist (padlist);
213		209
214	SvREFCNT_dec (av);	210	SvREFCNT_dec (av);
215		211
216	return 0;	212	return 0;
217	}	213	}
218		214
219	#define PERL_MAGIC_coro PERL_MAGIC_ext	215	#define PERL_MAGIC_coro PERL_MAGIC_ext
220		216
221	static MGVTBL vtbl_coro = {0, 0, 0, 0, coro_cv_free};	217	static MGVTBL vtbl_coro = {0, 0, 0, 0, coro_cv_free};
222		218
		219	#define CORO_MAGIC(cv) \
		220	SvMAGIC (cv) \
		221	? SvMAGIC (cv)->mg_type == PERL_MAGIC_coro \
		222	? SvMAGIC (cv) \
		223	: mg_find ((SV *)cv, PERL_MAGIC_coro) \
		224	: 0
		225
223	/* the next two functions merely cache the padlists */	226	/* the next two functions merely cache the padlists */
224	static void	227	static void
225	get_padlist (pTHX_ CV *cv)	228	get_padlist (CV *cv)
226	{	229	{
227	MAGIC mg = mg_find ((SV )cv, PERL_MAGIC_coro);	230	MAGIC *mg = CORO_MAGIC (cv);
		231	AV *av;
228		232
229	if (mg && AvFILLp ((AV *)mg->mg_obj) >= 0)	233	if (mg && AvFILLp ((av = (AV *)mg->mg_obj)) >= 0)
230	CvPADLIST (cv) = (AV )av_pop ((AV )mg->mg_obj);	234	CvPADLIST (cv) = (AV *)AvARRAY (av)[AvFILLp (av)--];
231	else	235	else
232	{	236	{
233	#if 0	237	#if 0
234	/* this should work - but it doesn't :( */	238	/* this is probably cleaner, but also slower? */
235	CV *cp = Perl_cv_clone (aTHX_ cv);	239	CV *cp = Perl_cv_clone (cv);
236	CvPADLIST (cv) = CvPADLIST (cp);	240	CvPADLIST (cv) = CvPADLIST (cp);
237	CvPADLIST (cp) = 0;	241	CvPADLIST (cp) = 0;
238	SvREFCNT_dec (cp);	242	SvREFCNT_dec (cp);
239	#else	243	#else
240	CvPADLIST (cv) = coro_clone_padlist (aTHX_ cv);	244	CvPADLIST (cv) = coro_clone_padlist (cv);
241	#endif	245	#endif
242	}	246	}
243	}	247	}
244		248
245	static void	249	static void
246	put_padlist (pTHX_ CV *cv)	250	put_padlist (CV *cv)
247	{	251	{
248	MAGIC mg = mg_find ((SV )cv, PERL_MAGIC_coro);	252	MAGIC *mg = CORO_MAGIC (cv);
		253	AV *av;
249		254
250	if (!mg)	255	if (!mg)
251	{	256	{
252	sv_magic ((SV *)cv, 0, PERL_MAGIC_coro, 0, 0);	257	sv_magic ((SV *)cv, 0, PERL_MAGIC_coro, 0, 0);
253	mg = mg_find ((SV *)cv, PERL_MAGIC_coro);	258	mg = mg_find ((SV *)cv, PERL_MAGIC_coro);
254	mg->mg_virtual = &vtbl_coro;	259	mg->mg_virtual = &vtbl_coro;
255	mg->mg_obj = (SV *)newAV ();	260	mg->mg_obj = (SV *)newAV ();
256	}	261	}
257		262
258	av_push ((AV )mg->mg_obj, (SV )CvPADLIST (cv));	263	av = (AV *)mg->mg_obj;
		264
		265	if (AvFILLp (av) >= AvMAX (av))
		266	av_extend (av, AvMAX (av) + 1);
		267
		268	AvARRAY (av)[++AvFILLp (av)] = (SV *)CvPADLIST (cv);
259	}	269	}
260		270
261	#define SB do {	271	#define SB do {
262	#define SE } while (0)	272	#define SE } while (0)
263		273
264	#define LOAD(state) load_state(aTHX_ (state));	274	#define LOAD(state) load_state((state));
265	#define SAVE(state,flags) save_state(aTHX_ (state),(flags));	275	#define SAVE(state,flags) save_state((state),(flags));
266		276
267	#define REPLACE_SV(sv,val) SB SvREFCNT_dec(sv); (sv) = (val); (val) = 0; SE	277	#define REPLACE_SV(sv,val) SB SvREFCNT_dec(sv); (sv) = (val); (val) = 0; SE
268		278
269	static void	279	static void
270	load_state(pTHX_ Coro__State c)	280	load_state(Coro__State c)
271	{	281	{
272	PL_dowarn = c->dowarn;	282	#define VAR(name,type) PL_ ## name = c->name;
273	PL_in_eval = c->in_eval;	283	# include "state.h"
274		284	#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	PL_top_env = c->top_env;
306		285
307	if (c->defav) REPLACE_SV (GvAV (PL_defgv), c->defav);	286	if (c->defav) REPLACE_SV (GvAV (PL_defgv), c->defav);
308	if (c->defsv) REPLACE_SV (DEFSV , c->defsv);	287	if (c->defsv) REPLACE_SV (DEFSV , c->defsv);
309	if (c->errsv) REPLACE_SV (ERRSV , c->errsv);	288	if (c->errsv) REPLACE_SV (ERRSV , c->errsv);
310		289
…		…
313	CV *cv;	292	CV *cv;
314		293
315	/* now do the ugly restore mess */	294	/* now do the ugly restore mess */
316	while ((cv = (CV *)POPs))	295	while ((cv = (CV *)POPs))
317	{	296	{
318	AV padlist = (AV )POPs;
319
320	if (padlist)
321	{
322	put_padlist (aTHX_ cv); /* mark this padlist as available */	297	put_padlist (cv); /* mark this padlist as available */
323	CvPADLIST(cv) = padlist;	298	CvDEPTH (cv) = PTR2IV (POPs);
324	}	299	CvPADLIST (cv) = (AV *)POPs;
325
326	++CvDEPTH(cv);
327	}	300	}
328		301
329	PUTBACK;	302	PUTBACK;
330	}	303	}
331	}	304	}
332		305
333	static void	306	static void
334	save_state(pTHX_ Coro__State c, int flags)	307	save_state(Coro__State c, int flags)
335	{	308	{
336	{	309	{
337	dSP;	310	dSP;
338	I32 cxix = cxstack_ix;	311	I32 cxix = cxstack_ix;
339	PERL_CONTEXT *ccstk = cxstack;	312	PERL_CONTEXT *ccstk = cxstack;
…		…
353	PERL_CONTEXT *cx = &ccstk[cxix--];	326	PERL_CONTEXT *cx = &ccstk[cxix--];
354		327
355	if (CxTYPE(cx) == CXt_SUB)	328	if (CxTYPE(cx) == CXt_SUB)
356	{	329	{
357	CV *cv = cx->blk_sub.cv;	330	CV *cv = cx->blk_sub.cv;
		331
358	if (CvDEPTH(cv))	332	if (CvDEPTH (cv))
359	{	333	{
360	EXTEND (SP, CvDEPTH(cv)*2);	334	EXTEND (SP, 3);
361
362	while (--CvDEPTH(cv))
363	{
364	/* this tells the restore code to increment CvDEPTH */
365	PUSHs (Nullsv);
366	PUSHs ((SV *)cv);
367	}
368		335
369	PUSHs ((SV *)CvPADLIST(cv));	336	PUSHs ((SV *)CvPADLIST(cv));
		337	PUSHs (INT2PTR (SV *, CvDEPTH (cv)));
370	PUSHs ((SV *)cv);	338	PUSHs ((SV *)cv);
371		339
		340	CvDEPTH (cv) = 0;
372	get_padlist (aTHX_ cv);	341	get_padlist (cv);
373	}	342	}
374	}	343	}
375	#ifdef CXt_FORMAT	344	#ifdef CXt_FORMAT
376	else if (CxTYPE(cx) == CXt_FORMAT)	345	else if (CxTYPE(cx) == CXt_FORMAT)
377	{	346	{
…		…
395		364
396	c->defav = flags & TRANSFER_SAVE_DEFAV ? (AV *)SvREFCNT_inc (GvAV (PL_defgv)) : 0;	365	c->defav = flags & TRANSFER_SAVE_DEFAV ? (AV *)SvREFCNT_inc (GvAV (PL_defgv)) : 0;
397	c->defsv = flags & TRANSFER_SAVE_DEFSV ? SvREFCNT_inc (DEFSV) : 0;	366	c->defsv = flags & TRANSFER_SAVE_DEFSV ? SvREFCNT_inc (DEFSV) : 0;
398	c->errsv = flags & TRANSFER_SAVE_ERRSV ? SvREFCNT_inc (ERRSV) : 0;	367	c->errsv = flags & TRANSFER_SAVE_ERRSV ? SvREFCNT_inc (ERRSV) : 0;
399		368
400	c->dowarn = PL_dowarn;	369	#define VAR(name,type)c->name = PL_ ## name;
401	c->in_eval = PL_in_eval;	370	# include "state.h"
402		371	#undef VAR
403	c->curstackinfo = PL_curstackinfo;
404	c->curstack = PL_curstack;
405	c->mainstack = PL_mainstack;
406	c->stack_sp = PL_stack_sp;
407	c->op = PL_op;
408	c->curpad = PL_curpad;
409	c->comppad = PL_comppad;
410	c->compcv = PL_compcv;
411	c->stack_base = PL_stack_base;
412	c->stack_max = PL_stack_max;
413	c->tmps_stack = PL_tmps_stack;
414	c->tmps_floor = PL_tmps_floor;
415	c->tmps_ix = PL_tmps_ix;
416	c->tmps_max = PL_tmps_max;
417	c->markstack = PL_markstack;
418	c->markstack_ptr = PL_markstack_ptr;
419	c->markstack_max = PL_markstack_max;
420	c->scopestack = PL_scopestack;
421	c->scopestack_ix = PL_scopestack_ix;
422	c->scopestack_max = PL_scopestack_max;
423	c->savestack = PL_savestack;
424	c->savestack_ix = PL_savestack_ix;
425	c->savestack_max = PL_savestack_max;
426	#if PERL_VERSION < 9
427	c->retstack = PL_retstack;
428	c->retstack_ix = PL_retstack_ix;
429	c->retstack_max = PL_retstack_max;
430	#endif
431	c->curpm = PL_curpm;
432	c->curcop = PL_curcop;
433	c->top_env = PL_top_env;
434	}	372	}
435		373
436	/*	374	/*
437	* allocate various perl stacks. This is an exact copy	375	* allocate various perl stacks. This is an exact copy
438	* of perl.c:init_stacks, except that it uses less memory	376	* of perl.c:init_stacks, except that it uses less memory
439	* on the (sometimes correct) assumption that coroutines do	377	* on the (sometimes correct) assumption that coroutines do
440	* not usually need a lot of stackspace.	378	* not usually need a lot of stackspace.
441	*/	379	*/
442	static void	380	static void
443	coro_init_stacks (pTHX)	381	coro_init_stacks ()
444	{	382	{
445	LOCK;
446
447	PL_curstackinfo = new_stackinfo(96, 1024/sizeof(PERL_CONTEXT) - 1);	383	PL_curstackinfo = new_stackinfo(96, 1024/sizeof(PERL_CONTEXT) - 1);
448	PL_curstackinfo->si_type = PERLSI_MAIN;	384	PL_curstackinfo->si_type = PERLSI_MAIN;
449	PL_curstack = PL_curstackinfo->si_stack;	385	PL_curstack = PL_curstackinfo->si_stack;
450	PL_mainstack = PL_curstack; /* remember in case we switch stacks */	386	PL_mainstack = PL_curstack; /* remember in case we switch stacks */
451		387
…		…
472		408
473	New(54,PL_savestack,96,ANY);	409	New(54,PL_savestack,96,ANY);
474	PL_savestack_ix = 0;	410	PL_savestack_ix = 0;
475	PL_savestack_max = 96;	411	PL_savestack_max = 96;
476		412
477	#if PERL_VERSION < 9	413	#if !PERL_VERSION_ATLEAST (5,9,0)
478	New(54,PL_retstack,8,OP*);	414	New(54,PL_retstack,8,OP*);
479	PL_retstack_ix = 0;	415	PL_retstack_ix = 0;
480	PL_retstack_max = 8;	416	PL_retstack_max = 8;
481	#endif	417	#endif
482
483	UNLOCK;
484	}	418	}
485		419
486	/*	420	/*
487	* destroy the stacks, the callchain etc...	421	* destroy the stacks, the callchain etc...
488	*/	422	*/
489	static void	423	static void
490	destroy_stacks(pTHX)	424	coro_destroy_stacks ()
491	{	425	{
492	if (!IN_DESTRUCT)	426	if (!IN_DESTRUCT)
493	{	427	{
494	/* is this ugly, I ask? */	428	/* is this ugly, I ask? */
495	LEAVE_SCOPE (0);	429	LEAVE_SCOPE (0);
…		…
526		460
527	Safefree (PL_tmps_stack);	461	Safefree (PL_tmps_stack);
528	Safefree (PL_markstack);	462	Safefree (PL_markstack);
529	Safefree (PL_scopestack);	463	Safefree (PL_scopestack);
530	Safefree (PL_savestack);	464	Safefree (PL_savestack);
531	#if PERL_VERSION < 9	465	#if !PERL_VERSION_ATLEAST (5,9,0)
532	Safefree (PL_retstack);	466	Safefree (PL_retstack);
533	#endif	467	#endif
534	}	468	}
535		469
536	static void	470	static void
537	allocate_stack (Coro__State ctx, int alloc)	471	setup_coro (struct coro *coro)
538	{
539	coro_stack *stack;
540
541	New (0, stack, 1, coro_stack);
542
543	stack->refcnt = 1;
544	stack->usecnt = 1;
545	stack->gencnt = ctx->gencnt = 0;
546
547	if (alloc)
548	{
549	#if HAVE_MMAP
550	stack->ssize = ((STACKSIZE * sizeof (long) + PAGESIZE - 1) / PAGESIZE + STACKGUARD) * PAGESIZE; /* mmap should do allocate-on-write for us */
551	stack->sptr = mmap (0, stack->ssize, PROT_EXEC\|PROT_READ\|PROT_WRITE, MAP_PRIVATE\|MAP_ANONYMOUS, 0, 0);
552	if (stack->sptr != (void *)-1)
553	{
554	# if STACKGUARD
555	mprotect (stack->sptr, STACKGUARD * PAGESIZE, PROT_NONE);
556	# endif
557	}
558	else
559	#endif
560	{
561	stack->ssize = - (STACKSIZE * (long)sizeof (long));
562	New (0, stack->sptr, STACKSIZE, long);
563	}
564	}
565	else
566	stack->sptr = 0;
567
568	ctx->stack = stack;
569	}
570
571	static void
572	deallocate_stack (Coro__State ctx)
573	{
574	coro_stack *stack = ctx->stack;
575
576	ctx->stack = 0;
577
578	if (stack)
579	{
580	if (!--stack->refcnt)
581	{
582	#ifdef HAVE_MMAP
583	if (stack->ssize > 0 && stack->sptr)
584	munmap (stack->sptr, stack->ssize);
585	else
586	#endif
587	Safefree (stack->sptr);
588
589	Safefree (stack);
590	}
591	else if (ctx->gencnt == stack->gencnt)
592	--stack->usecnt;
593	}
594	}
595
596	static void
597	setup_coro (void *arg)
598	{	472	{
599	/*	473	/*
600	* emulate part of the perl startup here.	474	* emulate part of the perl startup here.
601	*/	475	*/
602	dTHX;
603	dSP;
604	Coro__State ctx = (Coro__State)arg;
605	SV sub_init = (SV )get_cv (SUB_INIT, FALSE);
606		476
607	coro_init_stacks (aTHX);	477	coro_init_stacks ();
		478
608	/PL_curcop = 0;/	479	PL_curcop = 0;
609	/PL_in_eval = PL_in_eval;/ /* inherit */	480	PL_in_eval = 0;
		481	PL_curpm = 0;
		482
		483	{
		484	dSP;
		485	LOGOP myop;
		486
		487	/* I have no idea why this is needed, but it is */
		488	PUSHMARK (SP);
		489
610	SvREFCNT_dec (GvAV (PL_defgv));	490	SvREFCNT_dec (GvAV (PL_defgv));
611	GvAV (PL_defgv) = ctx->args; ctx->args = 0;	491	GvAV (PL_defgv) = coro->args; coro->args = 0;
612		492
613	SPAGAIN;
614
615	if (ctx->stack)
616	{
617	ctx->cursp = 0;
618
619	PUSHMARK(SP);
620	PUTBACK;
621	(void) call_sv (sub_init, G_VOID\|G_NOARGS\|G_EVAL);
622
623	if (SvTRUE (ERRSV))
624	croak (NULL);
625	else
626	croak ("FATAL: CCTXT coroutine returned!");
627	}
628	else
629	{
630	UNOP myop;
631
632	Zero(&myop, 1, UNOP);	493	Zero (&myop, 1, LOGOP);
633	myop.op_next = Nullop;	494	myop.op_next = Nullop;
634	myop.op_flags = OPf_WANT_VOID;	495	myop.op_flags = OPf_WANT_VOID;
635		496
636	PL_op = (OP *)&myop;	497	PL_op = (OP *)&myop;
637		498
638	PUSHMARK(SP);	499	PUSHMARK (SP);
639	XPUSHs (sub_init);	500	XPUSHs ((SV *)get_cv ("Coro::State::_coro_init", FALSE));
640	/*
641	* the next line is slightly wrong, as PL_op->op_next
642	* is actually being executed so we skip the first op.
643	* that doesn't matter, though, since it is only
644	* pp_nextstate and we never return...
645	* ah yes, and I don't care anyways ;)
646	*/
647	PUTBACK;	501	PUTBACK;
648	PL_op = PL_ppaddr[OP_ENTERSUB](aTHX);	502	PL_op = PL_ppaddr[OP_ENTERSUB](aTHX);
649	SPAGAIN;	503	SPAGAIN;
650		504
651	ENTER; /* necessary e.g. for dounwind */	505	ENTER; /* necessary e.g. for dounwind */
652	}	506	}
653	}	507	}
654		508
655	static void	509	static void
656	continue_coro (void *arg)	510	free_coro_mortal ()
657	{	511	{
658	/*
659	* this is a _very_ stripped down perl interpreter ;)
660	*/
661	dTHX;
662	Coro__State ctx = (Coro__State)arg;
663
664	PL_top_env = &PL_start_env;
665
666	ctx->cursp = 0;
667	PL_op = PL_op->op_next;
668	CALLRUNOPS(aTHX);
669
670	abort ();
671	}
672
673	/* never call directly, always through the coro_state_transfer global variable */
674	static void
675	transfer_impl (pTHX_ struct coro prev, struct coro next, int flags)
676	{
677	dSTACKLEVEL;
678
679	if (prev != next)
680	{
681	/* has this coro been created yet? */
682	if (next->mainstack)
683	{
684	LOCK;
685	SAVE (prev, flags);
686	LOAD (next);
687	UNLOCK;
688
689	/* mark this state as in-use */
690	next->mainstack = 0;
691	next->tmps_ix = -2;
692
693	/* stacklevel changed? if yes, grab the stack for us! */
694	if (flags & TRANSFER_SAVE_CCTXT)
695	{
696	if (!prev->stack)
697	allocate_stack (prev, 0);
698	else if (prev->cursp != stacklevel
699	&& prev->stack->usecnt > 1)
700	{
701	prev->gencnt = ++prev->stack->gencnt;
702	prev->stack->usecnt = 1;
703	}
704
705	/* has our stack been invalidated? */
706	if (next->stack && next->stack->gencnt != next->gencnt)
707	{
708	deallocate_stack (next);
709	allocate_stack (next, 1);
710	coro_create (&(next->stack->cctx),
711	continue_coro, (void *)next,
712	next->stack->sptr, labs (next->stack->ssize));
713	}
714
715	coro_transfer (&(prev->stack->cctx), &(next->stack->cctx));
716	prev->cursp = stacklevel;
717	/* don't add any code here */
718	}
719	else
720	next->cursp = stacklevel;
721	}
722	else if (next->tmps_ix == -2)
723	croak ("tried to transfer to running coroutine");
724	else
725	{
726	LOCK;
727	SAVE (prev, -1); /* first get rid of the old state */
728	UNLOCK;
729
730	/* create the coroutine for the first time */
731	if (flags & TRANSFER_SAVE_CCTXT)
732	{
733	if (!prev->stack)
734	allocate_stack (prev, 0);
735
736	/* the new coroutine starts with start_env again */
737	PL_top_env = &PL_start_env;
738
739	if (prev->stack->sptr && flags & TRANSFER_LAZY_STACK)
740	{
741	setup_coro (next);
742	next->cursp = stacklevel;
743
744	prev->stack->refcnt++;
745	prev->stack->usecnt++;
746	next->stack = prev->stack;
747	next->gencnt = prev->gencnt;
748	}
749	else
750	{
751	assert (!next->stack);
752	allocate_stack (next, 1);
753	coro_create (&(next->stack->cctx),
754	setup_coro, (void *)next,
755	next->stack->sptr, labs (next->stack->ssize));
756	coro_transfer (&(prev->stack->cctx), &(next->stack->cctx));
757	prev->cursp = stacklevel;
758	/* don't add any code here */
759	}
760	}
761	else
762	{
763	setup_coro (next);
764	next->cursp = stacklevel;
765	}
766	}
767	}
768
769	LOCK;
770	if (coro_mortal)	512	if (coro_mortal)
771	{	513	{
772	SvREFCNT_dec (coro_mortal);	514	SvREFCNT_dec (coro_mortal);
773	coro_mortal = 0;	515	coro_mortal = 0;
774	}	516	}
		517	}
		518
		519	static void NOINLINE
		520	prepare_cctx (coro_cctx *cctx)
		521	{
		522	dSP;
		523	LOGOP myop;
		524
		525	Zero (&myop, 1, LOGOP);
		526	myop.op_next = PL_op;
		527	myop.op_flags = OPf_WANT_VOID;
		528
		529	sv_setiv (get_sv ("Coro::State::_cctx", FALSE), PTR2IV (cctx));
		530
		531	PUSHMARK (SP);
		532	XPUSHs ((SV *)get_cv ("Coro::State::_cctx_init", FALSE));
		533	PUTBACK;
		534	PL_restartop = PL_ppaddr[OP_ENTERSUB](aTHX);
		535	SPAGAIN;
		536	}
		537
		538	static void
		539	coro_run (void *arg)
		540	{
		541	/* coro_run is the alternative epilogue of transfer() */
775	UNLOCK;	542	UNLOCK;
776	}
777		543
778	/* use this function pointer to call the above function */	544	/*
779	/* this is done to increase chances of the compiler not inlining the call */	545	* this is a _very_ stripped down perl interpreter ;)
780	void (coro_state_transfer)(pTHX_ struct coro prev, struct coro *next, int flags) = transfer_impl;	546	*/
		547	PL_top_env = &PL_start_env;
		548
		549	/* inject call to cctx_init */
		550	prepare_cctx ((coro_cctx *)arg);
		551
		552	/* somebody will hit me for both perl_run and PL_restartop */
		553	perl_run (PL_curinterp);
		554
		555	fputs ("FATAL: C coroutine fell over the edge of the world, aborting. Did you call exit in a coroutine?\n", stderr);
		556	abort ();
		557	}
		558
		559	static coro_cctx *
		560	cctx_new ()
		561	{
		562	coro_cctx *cctx;
		563
		564	++cctx_count;
		565
		566	New (0, cctx, 1, coro_cctx);
		567
		568	#if HAVE_MMAP
		569
		570	cctx->ssize = ((STACKSIZE * sizeof (long) + PAGESIZE - 1) / PAGESIZE + STACKGUARD) * PAGESIZE;
		571	/* mmap suppsedly does allocate-on-write for us */
		572	cctx->sptr = mmap (0, cctx->ssize, PROT_EXEC\|PROT_READ\|PROT_WRITE, MAP_PRIVATE\|MAP_ANONYMOUS, 0, 0);
		573
		574	if (cctx->sptr == (void *)-1)
		575	{
		576	perror ("FATAL: unable to mmap stack for coroutine");
		577	_exit (EXIT_FAILURE);
		578	}
		579
		580	# if STACKGUARD
		581	mprotect (cctx->sptr, STACKGUARD * PAGESIZE, PROT_NONE);
		582	# endif
		583
		584	#else
		585
		586	cctx->ssize = STACKSIZE * (long)sizeof (long);
		587	New (0, cctx->sptr, STACKSIZE, long);
		588
		589	if (!cctx->sptr)
		590	{
		591	perror ("FATAL: unable to malloc stack for coroutine");
		592	_exit (EXIT_FAILURE);
		593	}
		594
		595	#endif
		596
		597	#if USE_VALGRIND
		598	cctx->valgrind_id = VALGRIND_STACK_REGISTER (
		599	STACKGUARD * PAGESIZE + (char *)cctx->sptr,
		600	cctx->ssize + (char *)cctx->sptr
		601	);
		602	#endif
		603
		604	coro_create (&cctx->cctx, coro_run, (void *)cctx, cctx->sptr, cctx->ssize);
		605
		606	return cctx;
		607	}
		608
		609	static void
		610	cctx_free (coro_cctx *cctx)
		611	{
		612	if (!cctx)
		613	return;
		614
		615	--cctx_count;
		616
		617	#if USE_VALGRIND
		618	VALGRIND_STACK_DEREGISTER (cctx->valgrind_id);
		619	#endif
		620
		621	#if HAVE_MMAP
		622	munmap (cctx->sptr, cctx->ssize);
		623	#else
		624	Safefree (cctx->sptr);
		625	#endif
		626
		627	Safefree (cctx);
		628	}
		629
		630	static coro_cctx *
		631	cctx_get ()
		632	{
		633	coro_cctx *cctx;
		634
		635	if (cctx_first)
		636	{
		637	--cctx_idle;
		638	cctx = cctx_first;
		639	cctx_first = cctx->next;
		640	}
		641	else
		642	{
		643	cctx = cctx_new ();
		644	PL_op = PL_op->op_next;
		645	}
		646
		647	return cctx;
		648	}
		649
		650	static void
		651	cctx_put (coro_cctx *cctx)
		652	{
		653	++cctx_idle;
		654	cctx->next = cctx_first;
		655	cctx_first = cctx;
		656	}
		657
		658	/* never call directly, always through the coro_state_transfer global variable */
		659	static void NOINLINE
		660	transfer (struct coro prev, struct coro next, int flags)
		661	{
		662	dSTACKLEVEL;
		663
		664	/* sometimes transfer is only called to set idle_sp */
		665	if (flags == TRANSFER_SET_STACKLEVEL)
		666	((coro_cctx *)prev)->idle_sp = STACKLEVEL;
		667	else if (prev != next)
		668	{
		669	coro_cctx *prev__cctx;
		670
		671	LOCK;
		672
		673	if (next->mainstack)
		674	{
		675	/* coroutine already started */
		676	SAVE (prev, flags);
		677	LOAD (next);
		678	}
		679	else
		680	{
		681	/* need to start coroutine */
		682	/* first get rid of the old state */
		683	SAVE (prev, -1);
		684	/* setup coroutine call */
		685	setup_coro (next);
		686	/* need a stack */
		687	next->cctx = 0;
		688	}
		689
		690	if (!prev->cctx)
		691	/* create a new empty context */
		692	Newz (0, prev->cctx, 1, coro_cctx);
		693
		694	prev__cctx = prev->cctx;
		695
		696	/* possibly "free" the cctx */
		697	if (prev__cctx->idle_sp == STACKLEVEL)
		698	{
		699	assert (PL_top_env == prev__cctx->top_env);//D
		700	cctx_put (prev__cctx);
		701	prev->cctx = 0;
		702	}
		703
		704	if (!next->cctx)
		705	next->cctx = cctx_get ();
		706
		707	if (prev__cctx != next->cctx)
		708	{
		709	prev__cctx->top_env = PL_top_env;
		710	PL_top_env = next->cctx->top_env;
		711	coro_transfer (&prev__cctx->cctx, &next->cctx->cctx);
		712	}
		713
		714	free_coro_mortal ();
		715
		716	UNLOCK;
		717	}
		718	}
		719
		720	struct transfer_args
		721	{
		722	struct coro prev, next;
		723	int flags;
		724	};
		725
		726	#define TRANSFER(ta) transfer ((ta).prev, (ta).next, (ta).flags)
781		727
782	static void	728	static void
783	coro_state_destroy (struct coro *coro)	729	coro_state_destroy (struct coro *coro)
784	{	730	{
785	if (coro->refcnt--)	731	if (coro->refcnt--)
…		…
787		733
788	if (coro->mainstack && coro->mainstack != main_mainstack)	734	if (coro->mainstack && coro->mainstack != main_mainstack)
789	{	735	{
790	struct coro temp;	736	struct coro temp;
791		737
792	SAVE (aTHX_ (&temp), TRANSFER_SAVE_ALL);	738	SAVE ((&temp), TRANSFER_SAVE_ALL);
793	LOAD (aTHX_ coro);	739	LOAD (coro);
794		740
795	destroy_stacks (aTHX);	741	coro_destroy_stacks ();
796		742
797	LOAD ((&temp)); /* this will get rid of defsv etc.. */	743	LOAD ((&temp)); /* this will get rid of defsv etc.. */
798		744
799	coro->mainstack = 0;	745	coro->mainstack = 0;
800	}	746	}
801		747
802	deallocate_stack (coro);	748	cctx_free (coro->cctx);
803	SvREFCNT_dec (coro->args);	749	SvREFCNT_dec (coro->args);
804	Safefree (coro);	750	Safefree (coro);
805	}	751	}
806		752
807	static int	753	static int
808	coro_state_clear (SV sv, MAGIC mg)	754	coro_state_clear (pTHX_ SV sv, MAGIC mg)
809	{	755	{
810	struct coro coro = (struct coro )mg->mg_ptr;	756	struct coro coro = (struct coro )mg->mg_ptr;
811	mg->mg_ptr = 0;	757	mg->mg_ptr = 0;
812		758
813	coro_state_destroy (coro);	759	coro_state_destroy (coro);
814		760
815	return 0;	761	return 0;
816	}	762	}
817		763
818	static int	764	static int
819	coro_state_dup (MAGIC mg, CLONE_PARAMS params)	765	coro_state_dup (pTHX_ MAGIC mg, CLONE_PARAMS params)
820	{	766	{
821	struct coro coro = (struct coro )mg->mg_ptr;	767	struct coro coro = (struct coro )mg->mg_ptr;
822		768
823	++coro->refcnt;	769	++coro->refcnt;
824		770
825	return 0;	771	return 0;
826	}	772	}
827		773
828	static MGVTBL coro_state_vtbl = { 0, 0, 0, 0, coro_state_clear, 0, coro_state_dup, 0 };	774	static MGVTBL coro_state_vtbl = {
		775	0, 0, 0, 0,
		776	coro_state_clear,
		777	0,
		778	#ifdef MGf_DUP
		779	coro_state_dup,
		780	#else
		781	# define MGf_DUP 0
		782	#endif
		783	};
829		784
830	static struct coro *	785	static struct coro *
831	SvSTATE (SV *coro)	786	SvSTATE (SV *coro)
832	{	787	{
833	HV *stash;	788	HV *stash;
…		…
848	assert (mg->mg_type == PERL_MAGIC_ext);	803	assert (mg->mg_type == PERL_MAGIC_ext);
849	return (struct coro *)mg->mg_ptr;	804	return (struct coro *)mg->mg_ptr;
850	}	805	}
851		806
852	static void	807	static void
		808	prepare_transfer (struct transfer_args ta, SV prev, SV *next, int flags)
		809	{
		810	ta->prev = SvSTATE (prev);
		811	ta->next = SvSTATE (next);
		812	ta->flags = flags;
		813	}
		814
		815	static void
853	api_transfer (pTHX_ SV prev, SV next, int flags)	816	api_transfer (SV prev, SV next, int flags)
854	{	817	{
855	coro_state_transfer (aTHX_ SvSTATE (prev), SvSTATE (next), flags);	818	dTHX;
		819	struct transfer_args ta;
		820
		821	prepare_transfer (&ta, prev, next, flags);
		822	TRANSFER (ta);
856	}	823	}
857		824
858	/ Coro ******************************************************************/	825	/ Coro ******************************************************************/
859		826
860	#define PRIO_MAX 3	827	#define PRIO_MAX 3
…		…
868	static GV coro_current, coro_idle;	835	static GV coro_current, coro_idle;
869	static AV *coro_ready [PRIO_MAX-PRIO_MIN+1];	836	static AV *coro_ready [PRIO_MAX-PRIO_MIN+1];
870	static int coro_nready;	837	static int coro_nready;
871		838
872	static void	839	static void
873	coro_enq (pTHX_ SV *sv)	840	coro_enq (SV *sv)
874	{	841	{
875	int prio;	842	int prio;
876		843
877	if (SvTYPE (sv) != SVt_PVHV)	844	if (SvTYPE (sv) != SVt_PVHV)
878	croak ("Coro::ready tried to enqueue something that is not a coroutine");	845	croak ("Coro::ready tried to enqueue something that is not a coroutine");
…		…
882	av_push (coro_ready [prio - PRIO_MIN], sv);	849	av_push (coro_ready [prio - PRIO_MIN], sv);
883	coro_nready++;	850	coro_nready++;
884	}	851	}
885		852
886	static SV *	853	static SV *
887	coro_deq (pTHX_ int min_prio)	854	coro_deq (int min_prio)
888	{	855	{
889	int prio = PRIO_MAX - PRIO_MIN;	856	int prio = PRIO_MAX - PRIO_MIN;
890		857
891	min_prio -= PRIO_MIN;	858	min_prio -= PRIO_MIN;
892	if (min_prio < 0)	859	if (min_prio < 0)
…		…
909		876
910	if (SvROK (coro))	877	if (SvROK (coro))
911	coro = SvRV (coro);	878	coro = SvRV (coro);
912		879
913	LOCK;	880	LOCK;
914	coro_enq (aTHX_ SvREFCNT_inc (coro));	881	coro_enq (SvREFCNT_inc (coro));
915	UNLOCK;	882	UNLOCK;
916	}	883	}
917		884
918	static void	885	static void
919	api_schedule (void)	886	prepare_schedule (struct transfer_args *ta)
920	{	887	{
921	dTHX;
922
923	SV prev, next;	888	SV current, prev, *next;
		889
924	SV *current = GvSV (coro_current);	890	current = GvSV (coro_current);
925		891
926	for (;;)	892	for (;;)
927	{	893	{
928	LOCK;	894	LOCK;
929
930	next = coro_deq (aTHX_ PRIO_MIN);	895	next = coro_deq (PRIO_MIN);
		896	UNLOCK;
931		897
932	if (next)	898	if (next)
933	break;	899	break;
934
935	UNLOCK;
936		900
937	{	901	{
938	dSP;	902	dSP;
939		903
940	ENTER;	904	ENTER;
…		…
951		915
952	prev = SvRV (current);	916	prev = SvRV (current);
953	SvRV (current) = next;	917	SvRV (current) = next;
954		918
955	/* free this only after the transfer */	919	/* free this only after the transfer */
		920	LOCK;
		921	free_coro_mortal ();
		922	UNLOCK;
956	coro_mortal = prev;	923	coro_mortal = prev;
957		924
		925	ta->prev = SvSTATE (prev);
		926	ta->next = SvSTATE (next);
		927	ta->flags = TRANSFER_SAVE_ALL;
		928	}
		929
		930	static void
		931	prepare_cede (struct transfer_args *ta)
		932	{
		933	LOCK;
		934	coro_enq (SvREFCNT_inc (SvRV (GvSV (coro_current))));
958	UNLOCK;	935	UNLOCK;
959		936
960	coro_state_transfer (aTHX_ SvSTATE (prev), SvSTATE (next),	937	prepare_schedule (ta);
961	TRANSFER_SAVE_ALL \| TRANSFER_LAZY_STACK);	938	}
		939
		940	static void
		941	api_schedule (void)
		942	{
		943	dTHX;
		944	struct transfer_args ta;
		945
		946	prepare_schedule (&ta);
		947	TRANSFER (ta);
962	}	948	}
963		949
964	static void	950	static void
965	api_cede (void)	951	api_cede (void)
966	{	952	{
967	dTHX;	953	dTHX;
		954	struct transfer_args ta;
968		955
969	LOCK;	956	prepare_cede (&ta);
970	coro_enq (aTHX_ SvREFCNT_inc (SvRV (GvSV (coro_current))));	957	TRANSFER (ta);
971	UNLOCK;
972
973	api_schedule ();
974	}	958	}
975		959
976	MODULE = Coro::State PACKAGE = Coro::State	960	MODULE = Coro::State PACKAGE = Coro::State
977		961
978	PROTOTYPES: DISABLE	962	PROTOTYPES: DISABLE
…		…
987	coro_state_stash = gv_stashpv ("Coro::State", TRUE);	971	coro_state_stash = gv_stashpv ("Coro::State", TRUE);
988		972
989	newCONSTSUB (coro_state_stash, "SAVE_DEFAV", newSViv (TRANSFER_SAVE_DEFAV));	973	newCONSTSUB (coro_state_stash, "SAVE_DEFAV", newSViv (TRANSFER_SAVE_DEFAV));
990	newCONSTSUB (coro_state_stash, "SAVE_DEFSV", newSViv (TRANSFER_SAVE_DEFSV));	974	newCONSTSUB (coro_state_stash, "SAVE_DEFSV", newSViv (TRANSFER_SAVE_DEFSV));
991	newCONSTSUB (coro_state_stash, "SAVE_ERRSV", newSViv (TRANSFER_SAVE_ERRSV));	975	newCONSTSUB (coro_state_stash, "SAVE_ERRSV", newSViv (TRANSFER_SAVE_ERRSV));
992	newCONSTSUB (coro_state_stash, "SAVE_CCTXT", newSViv (TRANSFER_SAVE_CCTXT));
993		976
994	main_mainstack = PL_mainstack;	977	main_mainstack = PL_mainstack;
995		978
996	coroapi.ver = CORO_API_VERSION;	979	coroapi.ver = CORO_API_VERSION;
997	coroapi.transfer = api_transfer;	980	coroapi.transfer = api_transfer;
…		…
1008	int i;	991	int i;
1009		992
1010	Newz (0, coro, 1, struct coro);	993	Newz (0, coro, 1, struct coro);
1011	coro->args = newAV ();	994	coro->args = newAV ();
1012		995
1013	for (i = 1; i < items; i++)
1014	av_push (coro->args, newSVsv (ST (i)));
1015
1016	/coro->mainstack = 0; //actual work is done inside transfer /
1017	/coro->stack = 0;/
1018
1019	hv = newHV ();	996	hv = newHV ();
1020	sv_magicext ((SV )hv, 0, PERL_MAGIC_ext, &coro_state_vtbl, (char )coro, 0)->mg_flags \|= MGf_DUP;	997	sv_magicext ((SV )hv, 0, PERL_MAGIC_ext, &coro_state_vtbl, (char )coro, 0)->mg_flags \|= MGf_DUP;
1021	RETVAL = sv_bless (newRV_noinc ((SV *)hv), gv_stashpv (klass, 1));	998	RETVAL = sv_bless (newRV_noinc ((SV *)hv), gv_stashpv (klass, 1));
		999
		1000	for (i = 1; i < items; i++)
		1001	av_push (coro->args, newSVsv (ST (i)));
1022	}	1002	}
1023	OUTPUT:	1003	OUTPUT:
1024	RETVAL	1004	RETVAL
1025		1005
1026	void	1006	void
1027	transfer(prev, next, flags)	1007	_set_stacklevel (...)
1028	SV *prev	1008	ALIAS:
1029	SV *next	1009	Coro::State::transfer = 1
1030	int flags	1010	Coro::schedule = 2
		1011	Coro::cede = 3
		1012	Coro::Cont::yield = 4
1031	CODE:	1013	CODE:
1032	PUTBACK;
1033	coro_state_transfer (aTHX_ SvSTATE (prev), SvSTATE (next), flags);
1034	SPAGAIN;
1035
1036	int
1037	prio (Coro::State coro, int newprio = 0)
1038	ALIAS:
1039	nice = 1
1040	CODE:
1041	{	1014	{
1042	RETVAL = coro->prio;	1015	struct transfer_args ta;
1043		1016
1044	if (items > 1)	1017	switch (ix)
1045	{	1018	{
		1019	case 0:
		1020	ta.prev = (struct coro )INT2PTR (coro_cctx , SvIV (ST (0)));
		1021	ta.next = 0;
		1022	ta.flags = TRANSFER_SET_STACKLEVEL;
		1023	break;
		1024
		1025	case 1:
1046	if (ix)	1026	if (items != 3)
1047	newprio += coro->prio;	1027	croak ("Coro::State::transfer(prev,next,flags) expects three arguments, not %d", items);
1048		1028
1049	if (newprio < PRIO_MIN) newprio = PRIO_MIN;	1029	prepare_transfer (&ta, ST (0), ST (1), SvIV (ST (2)));
1050	if (newprio > PRIO_MAX) newprio = PRIO_MAX;	1030	break;
1051		1031
1052	coro->prio = newprio;	1032	case 2:
		1033	prepare_schedule (&ta);
		1034	break;
		1035
		1036	case 3:
		1037	prepare_cede (&ta);
		1038	break;
		1039
		1040	case 4:
		1041	{
		1042	SV *yieldstack;
		1043	SV *sv;
		1044	AV *defav = GvAV (PL_defgv);
		1045
		1046	yieldstack = *hv_fetch (
		1047	(HV *)SvRV (GvSV (coro_current)),
		1048	"yieldstack", sizeof ("yieldstack") - 1,
		1049	0
		1050	);
		1051
		1052	/* set up @_ -- ugly */
		1053	av_clear (defav);
		1054	av_fill (defav, items - 1);
		1055	while (items--)
		1056	av_store (defav, items, SvREFCNT_inc (ST(items)));
		1057
		1058	sv = av_pop ((AV *)SvRV (yieldstack));
		1059	ta.prev = SvSTATE (av_fetch ((AV )SvRV (sv), 0, 0));
		1060	ta.next = SvSTATE (av_fetch ((AV )SvRV (sv), 1, 0));
		1061	ta.flags = 0;
		1062	SvREFCNT_dec (sv);
		1063	}
		1064	break;
		1065
1053	}	1066	}
		1067
		1068	TRANSFER (ta);
1054	}	1069	}
1055		1070
1056	void	1071	void
1057	_clone_state_from (SV dst, SV src)	1072	_clone_state_from (SV dst, SV src)
1058	CODE:	1073	CODE:
…		…
1070	int code	1085	int code
1071	PROTOTYPE: $	1086	PROTOTYPE: $
1072	CODE:	1087	CODE:
1073	_exit (code);	1088	_exit (code);
1074		1089
1075	MODULE = Coro::State PACKAGE = Coro::Cont	1090	int
		1091	cctx_count ()
		1092	CODE:
		1093	RETVAL = cctx_count;
		1094	OUTPUT:
		1095	RETVAL
1076		1096
1077	void	1097	int
1078	yield (...)	1098	cctx_idle ()
1079	PROTOTYPE: @	1099	CODE:
1080	CODE:	1100	RETVAL = cctx_idle;
1081	{	1101	OUTPUT:
1082	SV *yieldstack;	1102	RETVAL
1083	SV *sv;
1084	AV *defav = GvAV (PL_defgv);
1085	struct coro prev, next;
1086
1087	yieldstack = *hv_fetch (
1088	(HV *)SvRV (GvSV (coro_current)),
1089	"yieldstack", sizeof ("yieldstack") - 1,
1090	0
1091	);
1092
1093	/* set up @_ -- ugly */
1094	av_clear (defav);
1095	av_fill (defav, items - 1);
1096	while (items--)
1097	av_store (defav, items, SvREFCNT_inc (ST(items)));
1098
1099	sv = av_pop ((AV *)SvRV (yieldstack));
1100	prev = SvSTATE (av_fetch ((AV )SvRV (sv), 0, 0));
1101	next = SvSTATE (av_fetch ((AV )SvRV (sv), 1, 0));
1102	SvREFCNT_dec (sv);
1103
1104	coro_state_transfer (aTHX_ prev, next, 0);
1105	}
1106		1103
1107	MODULE = Coro::State PACKAGE = Coro	1104	MODULE = Coro::State PACKAGE = Coro
1108		1105
1109	BOOT:	1106	BOOT:
1110	{	1107	{
…		…
1138	sv_setiv (sv, (IV)&coroapi);	1135	sv_setiv (sv, (IV)&coroapi);
1139	SvREADONLY_on (sv);	1136	SvREADONLY_on (sv);
1140	}	1137	}
1141	}	1138	}
1142		1139
1143	#if !PERL_MICRO	1140	int
		1141	prio (Coro::State coro, int newprio = 0)
		1142	ALIAS:
		1143	nice = 1
		1144	CODE:
		1145	{
		1146	RETVAL = coro->prio;
		1147
		1148	if (items > 1)
		1149	{
		1150	if (ix)
		1151	newprio += coro->prio;
		1152
		1153	if (newprio < PRIO_MIN) newprio = PRIO_MIN;
		1154	if (newprio > PRIO_MAX) newprio = PRIO_MAX;
		1155
		1156	coro->prio = newprio;
		1157	}
		1158	}
1144		1159
1145	void	1160	void
1146	ready (self)	1161	ready (SV *self)
1147	SV * self
1148	PROTOTYPE: $	1162	PROTOTYPE: $
1149	CODE:	1163	CODE:
1150	api_ready (self);	1164	api_ready (self);
1151
1152	#endif
1153		1165
1154	int	1166	int
1155	nready (...)	1167	nready (...)
1156	PROTOTYPE:	1168	PROTOTYPE:
1157	CODE:	1169	CODE:
1158	RETVAL = coro_nready;	1170	RETVAL = coro_nready;
1159	OUTPUT:	1171	OUTPUT:
1160	RETVAL	1172	RETVAL
1161		1173
1162	void	1174	MODULE = Coro::State PACKAGE = Coro::AIO
1163	schedule (...)
1164	PROTOTYPE:
1165	CODE:
1166	api_schedule ();
1167		1175
1168	void
1169	cede (...)
1170	PROTOTYPE:
1171	CODE:
1172	api_cede ();
1173
1174	# and these are hacks
1175	SV *	1176	SV *
1176	_aio_get_state ()	1177	_get_state ()
1177	CODE:	1178	CODE:
1178	{	1179	{
1179	struct {	1180	struct {
1180	int errorno;	1181	int errorno;
1181	int laststype;	1182	int laststype;
…		…
1192	}	1193	}
1193	OUTPUT:	1194	OUTPUT:
1194	RETVAL	1195	RETVAL
1195		1196
1196	void	1197	void
1197	_aio_set_state (char *data_)	1198	_set_state (char *data_)
1198	PROTOTYPE: $	1199	PROTOTYPE: $
1199	CODE:	1200	CODE:
1200	{	1201	{
1201	struct {	1202	struct {
1202	int errorno;	1203	int errorno;

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Comparing Coro/Coro/State.xs (file contents): Revision 1.88 by root, Fri Nov 24 15:34:33 2006 UTC vs. Revision 1.110 by root, Tue Nov 28 23:08:07 2006 UTC

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Comparing Coro/Coro/State.xs (file contents):
Revision 1.88 by root, Fri Nov 24 15:34:33 2006 UTC vs.
Revision 1.110 by root, Tue Nov 28 23:08:07 2006 UTC