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

Comparing Coro/Coro/State.xs (file contents):
Revision 1.91 by root, Sat Nov 25 01:14:11 2006 UTC vs.
Revision 1.121 by root, Sat Dec 2 20:40:25 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	/* the maximum number of idle cctx that will be pooled */
		14	#define MAX_IDLE_CCTX 8
		15
		16	#define PERL_VERSION_ATLEAST(a,b,c) \
		17	(PERL_REVISION > (a) \
		18	\|\| (PERL_REVISION == (a) \
		19	&& (PERL_VERSION > (b) \
		20	\|\| (PERL_VERSION == (b) && PERLSUBVERSION >= (c)))))
		21
		22	#if !PERL_VERSION_ATLEAST (5,6,0)
12	# ifndef PL_ppaddr	23	# ifndef PL_ppaddr
13	# define PL_ppaddr ppaddr	24	# define PL_ppaddr ppaddr
14	# endif	25	# endif
15	# ifndef call_sv	26	# ifndef call_sv
16	# define call_sv perl_call_sv	27	# define call_sv perl_call_sv
27	# ifndef IS_PADCONST	38	# ifndef IS_PADCONST
28	# define IS_PADCONST(v) 0	39	# define IS_PADCONST(v) 0
29	# endif	40	# endif
30	#endif	41	#endif
31		42
		43	#include <stdio.h>
32	#include <errno.h>	44	#include <errno.h>
33		45
34	#if !__i386 && !__x86_64 && !__powerpc && !__m68k && !__alpha && !__mips && !__sparc64	46	#if !__i386 && !__x86_64 && !__powerpc && !__m68k && !__alpha && !__mips && !__sparc64
35	# undef STACKGUARD	47	# undef STACKGUARD
36	#endif	48	#endif
…		…
53	# ifndef PAGESIZE	65	# ifndef PAGESIZE
54	# define PAGESIZE pagesize	66	# define PAGESIZE pagesize
55	# define BOOT_PAGESIZE pagesize = sysconf (_SC_PAGESIZE)	67	# define BOOT_PAGESIZE pagesize = sysconf (_SC_PAGESIZE)
56	static long pagesize;	68	static long pagesize;
57	# else	69	# else
58	# define BOOT_PAGESIZE	70	# define BOOT_PAGESIZE (void)0
59	# endif	71	# endif
		72	#else
		73	# define PAGESIZE 0
		74	# define BOOT_PAGESIZE (void)0
60	#endif	75	#endif
61
62	#define SUB_INIT "Coro::State::initialize"
63		76
64	/* The next macro should declare a variable stacklevel that contains and approximation	77	/* 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	78	* to the current C stack pointer. Its property is that it changes with each call
66	* and should be unique. */	79	* and should be unique. */
		80	#define dSTACKLEVEL int stacklevel
67	#define dSTACKLEVEL void *stacklevel = &stacklevel	81	#define STACKLEVEL ((void *)&stacklevel)
68		82
69	#define IN_DESTRUCT (PL_main_cv == Nullcv)	83	#define IN_DESTRUCT (PL_main_cv == Nullcv)
70		84
71	#define labs(l) ((l) >= 0 ? (l) : -(l))	85	#if __GNUC__ >= 3
		86	# define attribute(x) __attribute__(x)
		87	#else
		88	# define attribute(x)
		89	#endif
		90
		91	#define NOINLINE attribute ((noinline))
72		92
73	#include "CoroAPI.h"	93	#include "CoroAPI.h"
		94
		95	#define TRANSFER_SET_STACKLEVEL 0x8bfbfbfb /* magic cookie */
74		96
75	#ifdef USE_ITHREADS	97	#ifdef USE_ITHREADS
76	static perl_mutex coro_mutex;	98	static perl_mutex coro_mutex;
77	# define LOCK do { MUTEX_LOCK (&coro_mutex); } while (0)	99	# define LOCK do { MUTEX_LOCK (&coro_mutex); } while (0)
78	# define UNLOCK do { MUTEX_UNLOCK (&coro_mutex); } while (0)	100	# define UNLOCK do { MUTEX_UNLOCK (&coro_mutex); } while (0)
79	#else	101	#else
80	# define LOCK (void)0	102	# define LOCK (void)0
81	# define UNLOCK (void)0	103	# define UNLOCK (void)0
82	#endif	104	#endif
83		105
		106	struct io_state
		107	{
		108	int errorno;
		109	I32 laststype;
		110	int laststatval;
		111	Stat_t statcache;
		112	};
		113
84	static struct CoroAPI coroapi;	114	static struct CoroAPI coroapi;
85	static AV main_mainstack; / used to differentiate between $main and others */	115	static AV main_mainstack; / used to differentiate between $main and others */
86	static HV coro_state_stash, coro_stash;	116	static HV coro_state_stash, coro_stash;
87	static SV coro_mortal; / will be freed after next transfer */	117	static SV coro_mortal; / will be freed after next transfer */
88		118
89	/* this is actually not just the c stack but also c registers etc... */	119	static struct coro_cctx *cctx_first;
		120	static int cctx_count, cctx_idle;
		121
		122	/* this is a structure representing a c-level coroutine */
90	typedef struct coro_stack {	123	typedef struct coro_cctx {
91	struct coro_stack *next;	124	struct coro_cctx *next;
92		125
93	void *idle_sp;	126	/* the stack */
94	void *sptr;	127	void *sptr;
95	long ssize; /* positive == mmap, otherwise malloc */	128	long ssize; /* positive == mmap, otherwise malloc */
96		129
97	/* cpu state */	130	/* cpu state */
		131	void idle_sp; / sp of top-level transfer/schedule/cede call */
		132	JMPENV *top_env;
98	coro_context cctx;	133	coro_context cctx;
99	} coro_stack;
100		134
101	static coro_stack *main_stack;	135	int inuse;
102		136
		137	#if USE_VALGRIND
		138	int valgrind_id;
		139	#endif
		140	} coro_cctx;
		141
		142	enum {
		143	CF_RUNNING = 0x0001, /* coroutine is running */
		144	CF_READY = 0x0002, /* coroutine is ready */
		145	CF_NEW = 0x0004, /* ahs never been switched to */
		146	};
		147
		148	/* this is a structure representing a perl-level coroutine */
103	struct coro {	149	struct coro {
		150	/* the c coroutine allocated to this perl coroutine, if any */
		151	coro_cctx *cctx;
		152
		153	/* data associated with this coroutine (initial args) */
		154	AV *args;
		155	int refcnt;
		156	int flags;
		157
104	/* optionally saved, might be zero */	158	/* optionally saved, might be zero */
105	AV *defav;	159	AV *defav;
106	SV *defsv;	160	SV *defsv;
107	SV *errsv;	161	SV *errsv;
108		162
109	/* saved global state not related to stacks */	163	#define VAR(name,type) type name;
110	U8 dowarn;	164	# include "state.h"
111	I32 in_eval;	165	#undef VAR
112
113	/* the c stack, if any */
114	coro_stack *stack;
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		166
147	/* coro process data */	167	/* coro process data */
148	int prio;	168	int prio;
149
150	/* data associated with this coroutine (initial args) */
151	AV *args;
152	int refcnt;
153	};	169	};
154		170
155	typedef struct coro *Coro__State;	171	typedef struct coro *Coro__State;
156	typedef struct coro *Coro__State_or_hashref;	172	typedef struct coro *Coro__State_or_hashref;
157		173
158	static AV *	174	static AV *
159	coro_clone_padlist (pTHX_ CV *cv)	175	coro_clone_padlist (CV *cv)
160	{	176	{
161	AV *padlist = CvPADLIST (cv);	177	AV *padlist = CvPADLIST (cv);
162	AV newpadlist, newpad;	178	AV newpadlist, newpad;
163		179
164	newpadlist = newAV ();	180	newpadlist = newAV ();
165	AvREAL_off (newpadlist);	181	AvREAL_off (newpadlist);
166	#if PERL_VERSION < 9	182	#if PERL_VERSION_ATLEAST (5,9,0)
		183	Perl_pad_push (aTHX_ padlist, AvFILLp (padlist) + 1);
		184	#else
167	Perl_pad_push (aTHX_ padlist, AvFILLp (padlist) + 1, 1);	185	Perl_pad_push (aTHX_ padlist, AvFILLp (padlist) + 1, 1);
168	#else
169	Perl_pad_push (aTHX_ padlist, AvFILLp (padlist) + 1);
170	#endif	186	#endif
171	newpad = (AV *)AvARRAY (padlist)[AvFILLp (padlist)];	187	newpad = (AV *)AvARRAY (padlist)[AvFILLp (padlist)];
172	--AvFILLp (padlist);	188	--AvFILLp (padlist);
173		189
174	av_store (newpadlist, 0, SvREFCNT_inc (*av_fetch (padlist, 0, FALSE)));	190	av_store (newpadlist, 0, SvREFCNT_inc (*av_fetch (padlist, 0, FALSE)));
…		…
176		192
177	return newpadlist;	193	return newpadlist;
178	}	194	}
179		195
180	static void	196	static void
181	free_padlist (pTHX_ AV *padlist)	197	free_padlist (AV *padlist)
182	{	198	{
183	/* may be during global destruction */	199	/* may be during global destruction */
184	if (SvREFCNT (padlist))	200	if (SvREFCNT (padlist))
185	{	201	{
186	I32 i = AvFILLp (padlist);	202	I32 i = AvFILLp (padlist);
…		…
207	AV *padlist;	223	AV *padlist;
208	AV av = (AV )mg->mg_obj;	224	AV av = (AV )mg->mg_obj;
209		225
210	/* casting is fun. */	226	/* casting is fun. */
211	while (&PL_sv_undef != (SV )(padlist = (AV )av_pop (av)))	227	while (&PL_sv_undef != (SV )(padlist = (AV )av_pop (av)))
212	free_padlist (aTHX_ padlist);	228	free_padlist (padlist);
213		229
214	SvREFCNT_dec (av);	230	SvREFCNT_dec (av);
215		231
216	return 0;	232	return 0;
217	}	233	}
218		234
219	#define PERL_MAGIC_coro PERL_MAGIC_ext	235	#define PERL_MAGIC_coro PERL_MAGIC_ext
220		236
221	static MGVTBL vtbl_coro = {0, 0, 0, 0, coro_cv_free};	237	static MGVTBL vtbl_coro = {0, 0, 0, 0, coro_cv_free};
222		238
		239	#define CORO_MAGIC(cv) \
		240	SvMAGIC (cv) \
		241	? SvMAGIC (cv)->mg_type == PERL_MAGIC_coro \
		242	? SvMAGIC (cv) \
		243	: mg_find ((SV *)cv, PERL_MAGIC_coro) \
		244	: 0
		245
223	/* the next two functions merely cache the padlists */	246	/* the next two functions merely cache the padlists */
224	static void	247	static void
225	get_padlist (pTHX_ CV *cv)	248	get_padlist (CV *cv)
226	{	249	{
227	MAGIC mg = mg_find ((SV )cv, PERL_MAGIC_coro);	250	MAGIC *mg = CORO_MAGIC (cv);
		251	AV *av;
228		252
229	if (mg && AvFILLp ((AV *)mg->mg_obj) >= 0)	253	if (mg && AvFILLp ((av = (AV *)mg->mg_obj)) >= 0)
230	CvPADLIST (cv) = (AV )av_pop ((AV )mg->mg_obj);	254	CvPADLIST (cv) = (AV *)AvARRAY (av)[AvFILLp (av)--];
231	else	255	else
232	{	256	{
233	#if 0	257	#if 0
234	/* this should work - but it doesn't :( */	258	/* this is probably cleaner, but also slower? */
235	CV *cp = Perl_cv_clone (aTHX_ cv);	259	CV *cp = Perl_cv_clone (cv);
236	CvPADLIST (cv) = CvPADLIST (cp);	260	CvPADLIST (cv) = CvPADLIST (cp);
237	CvPADLIST (cp) = 0;	261	CvPADLIST (cp) = 0;
238	SvREFCNT_dec (cp);	262	SvREFCNT_dec (cp);
239	#else	263	#else
240	CvPADLIST (cv) = coro_clone_padlist (aTHX_ cv);	264	CvPADLIST (cv) = coro_clone_padlist (cv);
241	#endif	265	#endif
242	}	266	}
243	}	267	}
244		268
245	static void	269	static void
246	put_padlist (pTHX_ CV *cv)	270	put_padlist (CV *cv)
247	{	271	{
248	MAGIC mg = mg_find ((SV )cv, PERL_MAGIC_coro);	272	MAGIC *mg = CORO_MAGIC (cv);
		273	AV *av;
249		274
250	if (!mg)	275	if (!mg)
251	{	276	{
252	sv_magic ((SV *)cv, 0, PERL_MAGIC_coro, 0, 0);	277	sv_magic ((SV *)cv, 0, PERL_MAGIC_coro, 0, 0);
253	mg = mg_find ((SV *)cv, PERL_MAGIC_coro);	278	mg = mg_find ((SV *)cv, PERL_MAGIC_coro);
254	mg->mg_virtual = &vtbl_coro;	279	mg->mg_virtual = &vtbl_coro;
255	mg->mg_obj = (SV *)newAV ();	280	mg->mg_obj = (SV *)newAV ();
256	}	281	}
257		282
258	av_push ((AV )mg->mg_obj, (SV )CvPADLIST (cv));	283	av = (AV *)mg->mg_obj;
		284
		285	if (AvFILLp (av) >= AvMAX (av))
		286	av_extend (av, AvMAX (av) + 1);
		287
		288	AvARRAY (av)[++AvFILLp (av)] = (SV *)CvPADLIST (cv);
259	}	289	}
260		290
261	#define SB do {	291	#define SB do {
262	#define SE } while (0)	292	#define SE } while (0)
263		293
264	#define LOAD(state) load_state(aTHX_ (state));	294	#define LOAD(state) load_state ((state))
265	#define SAVE(state,flags) save_state(aTHX_ (state),(flags));	295	#define SAVE(state,flags) save_state ((state),(flags))
266		296
267	#define REPLACE_SV(sv,val) SB SvREFCNT_dec(sv); (sv) = (val); (val) = 0; SE	297	#define REPLACE_SV(sv,val) SB SvREFCNT_dec (sv); (sv) = (val); (val) = 0; SE
268		298
269	static void	299	static void
270	load_state(pTHX_ Coro__State c)	300	load_state (Coro__State c)
271	{	301	{
272	PL_dowarn = c->dowarn;	302	#define VAR(name,type) PL_ ## name = c->name;
273	PL_in_eval = c->in_eval;	303	# include "state.h"
274		304	#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		305
307	if (c->defav) REPLACE_SV (GvAV (PL_defgv), c->defav);	306	if (c->defav) REPLACE_SV (GvAV (PL_defgv), c->defav);
308	if (c->defsv) REPLACE_SV (DEFSV , c->defsv);	307	if (c->defsv) REPLACE_SV (DEFSV , c->defsv);
309	if (c->errsv) REPLACE_SV (ERRSV , c->errsv);	308	if (c->errsv) REPLACE_SV (ERRSV , c->errsv);
310		309
…		…
313	CV *cv;	312	CV *cv;
314		313
315	/* now do the ugly restore mess */	314	/* now do the ugly restore mess */
316	while ((cv = (CV *)POPs))	315	while ((cv = (CV *)POPs))
317	{	316	{
318	AV padlist = (AV )POPs;
319
320	if (padlist)
321	{
322	put_padlist (aTHX_ cv); /* mark this padlist as available */	317	put_padlist (cv); /* mark this padlist as available */
323	CvPADLIST(cv) = padlist;	318	CvDEPTH (cv) = PTR2IV (POPs);
324	}	319	CvPADLIST (cv) = (AV *)POPs;
325
326	++CvDEPTH(cv);
327	}	320	}
328		321
329	PUTBACK;	322	PUTBACK;
330	}	323	}
331	}	324	}
332		325
333	static void	326	static void
334	save_state(pTHX_ Coro__State c, int flags)	327	save_state (Coro__State c, int flags)
335	{	328	{
336	{	329	{
337	dSP;	330	dSP;
338	I32 cxix = cxstack_ix;	331	I32 cxix = cxstack_ix;
339	PERL_CONTEXT *ccstk = cxstack;	332	PERL_CONTEXT *ccstk = cxstack;
…		…
350	{	343	{
351	while (cxix >= 0)	344	while (cxix >= 0)
352	{	345	{
353	PERL_CONTEXT *cx = &ccstk[cxix--];	346	PERL_CONTEXT *cx = &ccstk[cxix--];
354		347
355	if (CxTYPE(cx) == CXt_SUB)	348	if (CxTYPE (cx) == CXt_SUB)
356	{	349	{
357	CV *cv = cx->blk_sub.cv;	350	CV *cv = cx->blk_sub.cv;
		351
358	if (CvDEPTH(cv))	352	if (CvDEPTH (cv))
359	{	353	{
360	EXTEND (SP, CvDEPTH(cv)*2);	354	EXTEND (SP, 3);
361		355
362	while (--CvDEPTH(cv))
363	{
364	/* this tells the restore code to increment CvDEPTH */
365	PUSHs (Nullsv);
366	PUSHs ((SV *)cv);
367	}
368
369	PUSHs ((SV *)CvPADLIST(cv));	356	PUSHs ((SV *)CvPADLIST (cv));
		357	PUSHs (INT2PTR (SV *, CvDEPTH (cv)));
370	PUSHs ((SV *)cv);	358	PUSHs ((SV *)cv);
371		359
		360	CvDEPTH (cv) = 0;
372	get_padlist (aTHX_ cv);	361	get_padlist (cv);
373	}	362	}
374	}	363	}
375	#ifdef CXt_FORMAT	364	#ifdef CXt_FORMAT
376	else if (CxTYPE(cx) == CXt_FORMAT)	365	else if (CxTYPE (cx) == CXt_FORMAT)
377	{	366	{
378	/* I never used formats, so how should I know how these are implemented? */	367	/* I never used formats, so how should I know how these are implemented? */
379	/* my bold guess is as a simple, plain sub... */	368	/* my bold guess is as a simple, plain sub... */
380	croak ("CXt_FORMAT not yet handled. Don't switch coroutines from within formats");	369	croak ("CXt_FORMAT not yet handled. Don't switch coroutines from within formats");
381	}	370	}
…		…
395		384
396	c->defav = flags & TRANSFER_SAVE_DEFAV ? (AV *)SvREFCNT_inc (GvAV (PL_defgv)) : 0;	385	c->defav = flags & TRANSFER_SAVE_DEFAV ? (AV *)SvREFCNT_inc (GvAV (PL_defgv)) : 0;
397	c->defsv = flags & TRANSFER_SAVE_DEFSV ? SvREFCNT_inc (DEFSV) : 0;	386	c->defsv = flags & TRANSFER_SAVE_DEFSV ? SvREFCNT_inc (DEFSV) : 0;
398	c->errsv = flags & TRANSFER_SAVE_ERRSV ? SvREFCNT_inc (ERRSV) : 0;	387	c->errsv = flags & TRANSFER_SAVE_ERRSV ? SvREFCNT_inc (ERRSV) : 0;
399		388
400	c->dowarn = PL_dowarn;	389	#define VAR(name,type)c->name = PL_ ## name;
401	c->in_eval = PL_in_eval;	390	# include "state.h"
402		391	#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	}	392	}
435		393
436	/*	394	/*
437	* allocate various perl stacks. This is an exact copy	395	* allocate various perl stacks. This is an exact copy
438	* of perl.c:init_stacks, except that it uses less memory	396	* of perl.c:init_stacks, except that it uses less memory
439	* on the (sometimes correct) assumption that coroutines do	397	* on the (sometimes correct) assumption that coroutines do
440	* not usually need a lot of stackspace.	398	* not usually need a lot of stackspace.
441	*/	399	*/
442	static void	400	static void
443	coro_init_stacks (pTHX)	401	coro_init_stacks ()
444	{	402	{
445	LOCK;
446
447	PL_curstackinfo = new_stackinfo(96, 1024/sizeof(PERL_CONTEXT) - 1);	403	PL_curstackinfo = new_stackinfo(128, 1024/sizeof(PERL_CONTEXT));
448	PL_curstackinfo->si_type = PERLSI_MAIN;	404	PL_curstackinfo->si_type = PERLSI_MAIN;
449	PL_curstack = PL_curstackinfo->si_stack;	405	PL_curstack = PL_curstackinfo->si_stack;
450	PL_mainstack = PL_curstack; /* remember in case we switch stacks */	406	PL_mainstack = PL_curstack; /* remember in case we switch stacks */
451		407
452	PL_stack_base = AvARRAY(PL_curstack);	408	PL_stack_base = AvARRAY(PL_curstack);
453	PL_stack_sp = PL_stack_base;	409	PL_stack_sp = PL_stack_base;
454	PL_stack_max = PL_stack_base + AvMAX(PL_curstack);	410	PL_stack_max = PL_stack_base + AvMAX(PL_curstack);
455		411
456	New(50,PL_tmps_stack,96,SV*);	412	New(50,PL_tmps_stack,128,SV*);
457	PL_tmps_floor = -1;	413	PL_tmps_floor = -1;
458	PL_tmps_ix = -1;	414	PL_tmps_ix = -1;
459	PL_tmps_max = 96;	415	PL_tmps_max = 128;
460		416
461	New(54,PL_markstack,16,I32);	417	New(54,PL_markstack,32,I32);
462	PL_markstack_ptr = PL_markstack;	418	PL_markstack_ptr = PL_markstack;
463	PL_markstack_max = PL_markstack + 16;	419	PL_markstack_max = PL_markstack + 32;
464		420
465	#ifdef SET_MARK_OFFSET	421	#ifdef SET_MARK_OFFSET
466	SET_MARK_OFFSET;	422	SET_MARK_OFFSET;
467	#endif	423	#endif
468		424
469	New(54,PL_scopestack,16,I32);	425	New(54,PL_scopestack,32,I32);
470	PL_scopestack_ix = 0;	426	PL_scopestack_ix = 0;
471	PL_scopestack_max = 16;	427	PL_scopestack_max = 32;
472		428
473	New(54,PL_savestack,96,ANY);	429	New(54,PL_savestack,64,ANY);
474	PL_savestack_ix = 0;	430	PL_savestack_ix = 0;
475	PL_savestack_max = 96;	431	PL_savestack_max = 64;
476		432
477	#if PERL_VERSION < 9	433	#if !PERL_VERSION_ATLEAST (5,9,0)
478	New(54,PL_retstack,8,OP*);	434	New(54,PL_retstack,16,OP*);
479	PL_retstack_ix = 0;	435	PL_retstack_ix = 0;
480	PL_retstack_max = 8;	436	PL_retstack_max = 16;
481	#endif	437	#endif
482
483	UNLOCK;
484	}	438	}
485		439
486	/*	440	/*
487	* destroy the stacks, the callchain etc...	441	* destroy the stacks, the callchain etc...
488	*/	442	*/
489	static void	443	static void
490	destroy_stacks(pTHX)	444	coro_destroy_stacks ()
491	{	445	{
492	if (!IN_DESTRUCT)	446	if (!IN_DESTRUCT)
493	{	447	{
494	/* is this ugly, I ask? */	448	/* is this ugly, I ask? */
495	LEAVE_SCOPE (0);	449	LEAVE_SCOPE (0);
…		…
526		480
527	Safefree (PL_tmps_stack);	481	Safefree (PL_tmps_stack);
528	Safefree (PL_markstack);	482	Safefree (PL_markstack);
529	Safefree (PL_scopestack);	483	Safefree (PL_scopestack);
530	Safefree (PL_savestack);	484	Safefree (PL_savestack);
531	#if PERL_VERSION < 9	485	#if !PERL_VERSION_ATLEAST (5,9,0)
532	Safefree (PL_retstack);	486	Safefree (PL_retstack);
533	#endif	487	#endif
534	}	488	}
535		489
536	static void	490	static void
537	setup_coro (struct coro *coro)	491	setup_coro (struct coro *coro)
538	{	492	{
539	/*	493	/*
540	* emulate part of the perl startup here.	494	* emulate part of the perl startup here.
541	*/	495	*/
542	dTHX;
543	dSP;
544	UNOP myop;
545	SV sub_init = (SV )get_cv (SUB_INIT, FALSE);
546		496
547	coro_init_stacks (aTHX);	497	coro_init_stacks ();
548	/PL_curcop = 0;/	498
549	/PL_in_eval = PL_in_eval;/ /* inherit */	499	PL_curcop = &PL_compiling;
		500	PL_in_eval = EVAL_NULL;
		501	PL_curpm = 0;
		502	PL_localizing = 0;
		503	PL_dirty = 0;
		504	PL_restartop = 0;
		505
		506	{
		507	dSP;
		508	LOGOP myop;
		509
550	SvREFCNT_dec (GvAV (PL_defgv));	510	SvREFCNT_dec (GvAV (PL_defgv));
551	GvAV (PL_defgv) = coro->args; coro->args = 0;	511	GvAV (PL_defgv) = coro->args; coro->args = 0;
552		512
553	SPAGAIN;
554
555	Zero (&myop, 1, UNOP);	513	Zero (&myop, 1, LOGOP);
556	myop.op_next = Nullop;	514	myop.op_next = Nullop;
557	myop.op_flags = OPf_WANT_VOID;	515	myop.op_flags = OPf_WANT_VOID;
558		516
		517	PUSHMARK (SP);
		518	XPUSHs ((SV *)get_cv ("Coro::State::_coro_init", FALSE));
		519	PUTBACK;
559	PL_op = (OP *)&myop;	520	PL_op = (OP *)&myop;
560
561	PUSHMARK(SP);
562	XPUSHs (sub_init);
563	PUTBACK;
564	PL_op = PL_ppaddr[OP_ENTERSUB](aTHX);	521	PL_op = PL_ppaddr[OP_ENTERSUB](aTHX);
565	SPAGAIN;	522	SPAGAIN;
		523	}
566		524
567	ENTER; /* necessary e.g. for dounwind */	525	ENTER; /* necessary e.g. for dounwind */
568	}	526	}
569		527
570	static void	528	static void
571	transfer_tail ()	529	free_coro_mortal ()
572	{	530	{
573	if (coro_mortal)	531	if (coro_mortal)
574	{	532	{
575	SvREFCNT_dec (coro_mortal);	533	SvREFCNT_dec (coro_mortal);
576	coro_mortal = 0;	534	coro_mortal = 0;
577	}	535	}
		536	}
578		537
		538	/* inject a fake call to Coro::State::_cctx_init into the execution */
		539	static void NOINLINE
		540	prepare_cctx (coro_cctx *cctx)
		541	{
		542	dSP;
		543	LOGOP myop;
		544
		545	Zero (&myop, 1, LOGOP);
		546	myop.op_next = PL_op;
		547	myop.op_flags = OPf_WANT_VOID \| OPf_STACKED;
		548
		549	PUSHMARK (SP);
		550	EXTEND (SP, 2);
		551	PUSHs (sv_2mortal (newSViv (PTR2IV (cctx))));
		552	PUSHs ((SV *)get_cv ("Coro::State::_cctx_init", FALSE));
		553	PUTBACK;
		554	PL_op = (OP *)&myop;
		555	PL_op = PL_ppaddr[OP_ENTERSUB](aTHX);
		556	SPAGAIN;
		557	}
		558
		559	static void
		560	coro_run (void *arg)
		561	{
		562	/* coro_run is the alternative tail of transfer(), so unlock here. */
579	UNLOCK;	563	UNLOCK;
580	}
581		564
582	static void
583	coro_run (void *arg)
584	{
585	/*	565	/*
586	* this is a _very_ stripped down perl interpreter ;)	566	* this is a _very_ stripped down perl interpreter ;)
587	*/	567	*/
588	dTHX;
589
590	transfer_tail ();
591
592	PL_top_env = &PL_start_env;	568	PL_top_env = &PL_start_env;
		569
		570	/* inject call to cctx_init */
		571	prepare_cctx ((coro_cctx *)arg);
		572
		573	/* somebody will hit me for both perl_run and PL_restartop */
593	PL_restartop = PL_op;	574	PL_restartop = PL_op;
594	/* somebody will hit me for both perl_run and PL_restart_top */	575	perl_run (PL_curinterp);
595	perl_run (aTHX_ PERL_GET_CONTEXT);
596		576
		577	fputs ("FATAL: C coroutine fell over the edge of the world, aborting. Did you call exit in a coroutine?\n", stderr);
597	abort ();	578	abort ();
598	}	579	}
599		580
600	static coro_stack *	581	static coro_cctx *
601	stack_new ()	582	cctx_new ()
602	{	583	{
603	coro_stack *stack;	584	coro_cctx *cctx;
604		585
		586	++cctx_count;
		587
605	New (0, stack, 1, coro_stack);	588	New (0, cctx, 1, coro_cctx);
606		589
607	#if HAVE_MMAP	590	#if HAVE_MMAP
608		591
609	stack->ssize = ((STACKSIZE * sizeof (long) + PAGESIZE - 1) / PAGESIZE + STACKGUARD) * PAGESIZE; /* mmap should do allocate-on-write for us */	592	cctx->ssize = ((STACKSIZE * sizeof (long) + PAGESIZE - 1) / PAGESIZE + STACKGUARD) * PAGESIZE;
		593	/* mmap supposedly does allocate-on-write for us */
610	stack->sptr = mmap (0, stack->ssize, PROT_EXEC\|PROT_READ\|PROT_WRITE, MAP_PRIVATE\|MAP_ANONYMOUS, 0, 0);	594	cctx->sptr = mmap (0, cctx->ssize, PROT_EXEC\|PROT_READ\|PROT_WRITE, MAP_PRIVATE\|MAP_ANONYMOUS, 0, 0);
611		595
612	if (stack->sptr == (void *)-1)	596	if (cctx->sptr == (void *)-1)
613	{	597	{
614	fprintf (stderr, "FATAL: unable to mmap stack for coroutine\n");	598	perror ("FATAL: unable to mmap stack for coroutine");
615	_exit (EXIT_FAILURE);	599	_exit (EXIT_FAILURE);
616	}	600	}
617		601
		602	# if STACKGUARD
618	mprotect (stack->sptr, STACKGUARD * PAGESIZE, PROT_NONE);	603	mprotect (cctx->sptr, STACKGUARD * PAGESIZE, PROT_NONE);
		604	# endif
619		605
620	#else	606	#else
621		607
622	stack->ssize = STACKSIZE * (long)sizeof (long);	608	cctx->ssize = STACKSIZE * (long)sizeof (long);
623	New (0, stack->sptr, STACKSIZE, long);	609	New (0, cctx->sptr, STACKSIZE, long);
624		610
625	if (!stack->sptr)	611	if (!cctx->sptr)
626	{	612	{
627	fprintf (stderr, "FATAL: unable to malloc stack for coroutine\n");	613	perror ("FATAL: unable to malloc stack for coroutine");
628	_exit (EXIT_FAILURE);	614	_exit (EXIT_FAILURE);
629	}	615	}
630		616
631	#endif	617	#endif
632		618
		619	#if USE_VALGRIND
		620	cctx->valgrind_id = VALGRIND_STACK_REGISTER (
		621	STACKGUARD * PAGESIZE + (char *)cctx->sptr,
		622	cctx->ssize + (char *)cctx->sptr
		623	);
		624	#endif
		625
633	coro_create (&stack->cctx, coro_run, 0, stack->sptr, stack->ssize);	626	coro_create (&cctx->cctx, coro_run, (void *)cctx, cctx->sptr, cctx->ssize);
634		627
635	return stack;	628	return cctx;
636	}	629	}
637		630
638	static void	631	static void
639	stack_free (coro_stack *stack)	632	cctx_destroy (coro_cctx *cctx)
640	{	633	{
641	if (!stack \|\| stack == main_stack)	634	if (!cctx)
642	return;	635	return;
643		636
		637	--cctx_count;
		638
		639	#if USE_VALGRIND
		640	VALGRIND_STACK_DEREGISTER (cctx->valgrind_id);
		641	#endif
		642
644	#if HAVE_MMAP	643	#if HAVE_MMAP
645	munmap (stack->sptr, stack->ssize);	644	munmap (cctx->sptr, cctx->ssize);
646	#else	645	#else
647	Safefree (stack->sptr);	646	Safefree (cctx->sptr);
648	#endif	647	#endif
649		648
650	Safefree (stack);	649	Safefree (cctx);
651	}	650	}
652		651
653	static coro_stack *stack_first;
654
655	static coro_stack *	652	static coro_cctx *
656	stack_get ()	653	cctx_get ()
657	{	654	{
658	coro_stack *stack;	655	coro_cctx *cctx;
659		656
660	if (stack_first)	657	if (cctx_first)
661	{	658	{
662	stack = stack_first;	659	cctx = cctx_first;
663	stack_first = stack->next;	660	cctx_first = cctx->next;
		661	--cctx_idle;
664	}	662	}
665	else	663	else
666	{	664	{
667	stack = stack_new ();	665	cctx = cctx_new ();
668	PL_op = PL_op->op_next;	666	PL_op = PL_op->op_next;
669	}	667	}
670		668
671	return stack;	669	return cctx;
672	}	670	}
673		671
674	static void	672	static void
675	stack_put (coro_stack *stack)	673	cctx_put (coro_cctx *cctx)
676	{	674	{
677	stack->next = stack_first;	675	/* free another cctx if overlimit */
678	stack_first = stack;	676	if (cctx_idle >= MAX_IDLE_CCTX)
		677	{
		678	coro_cctx *first = cctx_first;
		679	cctx_first = first->next;
		680	--cctx_idle;
		681
		682	assert (!first->inuse);
		683	cctx_destroy (first);
		684	}
		685
		686	++cctx_idle;
		687	cctx->next = cctx_first;
		688	cctx_first = cctx;
679	}	689	}
680		690
681	/* never call directly, always through the coro_state_transfer global variable */	691	/* never call directly, always through the coro_state_transfer global variable */
682	static void	692	static void NOINLINE
683	transfer_impl (pTHX_ struct coro prev, struct coro next, int flags)	693	transfer (struct coro prev, struct coro next, int flags)
684	{	694	{
685	dSTACKLEVEL;	695	dSTACKLEVEL;
686		696
687	/* sometimes transfer is only called to set idle_sp */	697	/* sometimes transfer is only called to set idle_sp */
688	if (!prev->stack->idle_sp)	698	if (flags == TRANSFER_SET_STACKLEVEL)
689	prev->stack->idle_sp = stacklevel;	699	((coro_cctx *)prev)->idle_sp = STACKLEVEL;
690
691	LOCK;
692
693	if (prev != next)	700	else if (prev != next)
694	{	701	{
695	coro_stack *prev_stack = prev->stack;	702	coro_cctx *prev__cctx;
696		703
697	/* possibly "free" the stack */	704	if (prev->flags & CF_NEW)
698	if (0 && prev_stack->idle_sp == stacklevel)
699	{	705	{
700	stack_put (prev_stack);	706	/* create a new empty context */
701	prev->stack = 0;	707	Newz (0, prev->cctx, 1, coro_cctx);
		708	prev->cctx->inuse = 1;
		709	prev->flags &= ~CF_NEW;
		710	prev->flags \|= CF_RUNNING;
702	}	711	}
703		712
704	if (next->mainstack)	713	/TODO: must not croak here /
		714	if (!prev->flags & CF_RUNNING)
		715	croak ("Coro::State::transfer called with non-running prev Coro::State, but can only transfer from running states");
		716
		717	if (next->flags & CF_RUNNING)
		718	croak ("Coro::State::transfer called with running next Coro::State, but can only transfer to inactive states");
		719
		720	prev->flags &= ~CF_RUNNING;
		721	next->flags \|= CF_RUNNING;
		722
		723	LOCK;
		724
		725	if (next->flags & CF_NEW)
		726	{
		727	/* need to start coroutine */
		728	next->flags &= ~CF_NEW;
		729	/* first get rid of the old state */
		730	SAVE (prev, -1);
		731	/* setup coroutine call */
		732	setup_coro (next);
		733	/* need a new stack */
		734	assert (!next->stack);
		735	}
		736	else
705	{	737	{
706	/* coroutine already started */	738	/* coroutine already started */
707	SAVE (prev, flags);	739	SAVE (prev, flags);
708	LOAD (next);	740	LOAD (next);
709	}	741	}
710	else	742
		743	prev__cctx = prev->cctx;
		744
		745	/* possibly "free" the cctx */
		746	if (prev__cctx->idle_sp == STACKLEVEL)
711	{	747	{
712	/* need to start coroutine */	748	/* I assume that STACKLEVEL is a stronger indicator than PL_top_env changes */
713	/* first get rid of the old state */	749	assert (PL_top_env == prev__cctx->top_env);
714	SAVE (prev, -1);	750
715	/* setup coroutine call */	751	prev->cctx = 0;
716	setup_coro (next);	752
717	/* need to change stack from main_stack to real one */	753	cctx_put (prev__cctx);
718	next->stack = 0;	754	prev__cctx->inuse = 0;
719	}	755	}
720		756
721	if (!next->stack)	757	if (!next->cctx)
722	next->stack = stack_get ();	758	{
		759	next->cctx = cctx_get ();
		760	assert (!next->cctx->inuse);
		761	next->cctx->inuse = 1;
		762	}
723		763
724	if (prev_stack != next->stack)	764	if (prev__cctx != next->cctx)
		765	{
		766	prev__cctx->top_env = PL_top_env;
		767	PL_top_env = next->cctx->top_env;
725	coro_transfer (&prev_stack->cctx, &next->stack->cctx);	768	coro_transfer (&prev__cctx->cctx, &next->cctx->cctx);
		769	}
		770
		771	free_coro_mortal ();
		772
		773	UNLOCK;
726	}	774	}
727
728	transfer_tail ();
729	}	775	}
730		776
731	/* use this function pointer to call the above function */	777	struct transfer_args
732	/* this is done to increase chances of the compiler not inlining the call */	778	{
733	void (coro_state_transfer)(pTHX_ struct coro prev, struct coro *next, int flags) = transfer_impl;	779	struct coro prev, next;
		780	int flags;
		781	};
		782
		783	#define TRANSFER(ta) transfer ((ta).prev, (ta).next, (ta).flags)
734		784
735	static void	785	static void
736	coro_state_destroy (struct coro *coro)	786	coro_state_destroy (struct coro *coro)
737	{	787	{
738	if (coro->refcnt--)	788	if (coro->refcnt--)
…		…
740		790
741	if (coro->mainstack && coro->mainstack != main_mainstack)	791	if (coro->mainstack && coro->mainstack != main_mainstack)
742	{	792	{
743	struct coro temp;	793	struct coro temp;
744		794
		795	if (coro->flags & CF_RUNNING)
		796	croak ("FATAL: tried to destroy currently running coroutine");
		797
745	SAVE (aTHX_ (&temp), TRANSFER_SAVE_ALL);	798	SAVE ((&temp), TRANSFER_SAVE_ALL);
746	LOAD (aTHX_ coro);	799	LOAD (coro);
747		800
748	destroy_stacks (aTHX);	801	coro_destroy_stacks ();
749		802
750	LOAD ((&temp)); /* this will get rid of defsv etc.. */	803	LOAD ((&temp)); /* this will get rid of defsv etc.. */
751		804
752	coro->mainstack = 0;	805	coro->mainstack = 0;
753	}	806	}
754		807
755	stack_free (coro->stack);	808	cctx_destroy (coro->cctx);
756	SvREFCNT_dec (coro->args);	809	SvREFCNT_dec (coro->args);
757	Safefree (coro);	810	Safefree (coro);
758	}	811	}
759		812
760	static int	813	static int
761	coro_state_clear (SV sv, MAGIC mg)	814	coro_state_clear (pTHX_ SV sv, MAGIC mg)
762	{	815	{
763	struct coro coro = (struct coro )mg->mg_ptr;	816	struct coro coro = (struct coro )mg->mg_ptr;
764	mg->mg_ptr = 0;	817	mg->mg_ptr = 0;
765		818
766	coro_state_destroy (coro);	819	coro_state_destroy (coro);
767		820
768	return 0;	821	return 0;
769	}	822	}
770		823
771	static int	824	static int
772	coro_state_dup (MAGIC mg, CLONE_PARAMS params)	825	coro_state_dup (pTHX_ MAGIC mg, CLONE_PARAMS params)
773	{	826	{
774	struct coro coro = (struct coro )mg->mg_ptr;	827	struct coro coro = (struct coro )mg->mg_ptr;
775		828
776	++coro->refcnt;	829	++coro->refcnt;
777		830
778	return 0;	831	return 0;
779	}	832	}
780		833
781	static MGVTBL coro_state_vtbl = { 0, 0, 0, 0, coro_state_clear, 0, coro_state_dup, 0 };	834	static MGVTBL coro_state_vtbl = {
		835	0, 0, 0, 0,
		836	coro_state_clear,
		837	0,
		838	#ifdef MGf_DUP
		839	coro_state_dup,
		840	#else
		841	# define MGf_DUP 0
		842	#endif
		843	};
782		844
783	static struct coro *	845	static struct coro *
784	SvSTATE (SV *coro)	846	SvSTATE (SV *coro)
785	{	847	{
786	HV *stash;	848	HV *stash;
…		…
801	assert (mg->mg_type == PERL_MAGIC_ext);	863	assert (mg->mg_type == PERL_MAGIC_ext);
802	return (struct coro *)mg->mg_ptr;	864	return (struct coro *)mg->mg_ptr;
803	}	865	}
804		866
805	static void	867	static void
		868	prepare_transfer (struct transfer_args ta, SV prev, SV *next, int flags)
		869	{
		870	ta->prev = SvSTATE (prev);
		871	ta->next = SvSTATE (next);
		872	ta->flags = flags;
		873	}
		874
		875	static void
806	api_transfer (pTHX_ SV prev, SV next, int flags)	876	api_transfer (SV prev, SV next, int flags)
807	{	877	{
808	coro_state_transfer (aTHX_ SvSTATE (prev), SvSTATE (next), flags);	878	struct transfer_args ta;
		879
		880	prepare_transfer (&ta, prev, next, flags);
		881	TRANSFER (ta);
809	}	882	}
810		883
811	/ Coro ******************************************************************/	884	/ Coro ******************************************************************/
812		885
813	#define PRIO_MAX 3	886	#define PRIO_MAX 3
…		…
816	#define PRIO_LOW -1	889	#define PRIO_LOW -1
817	#define PRIO_IDLE -3	890	#define PRIO_IDLE -3
818	#define PRIO_MIN -4	891	#define PRIO_MIN -4
819		892
820	/* for Coro.pm */	893	/* for Coro.pm */
821	static GV coro_current, coro_idle;	894	static SV *coro_current;
822	static AV *coro_ready [PRIO_MAX-PRIO_MIN+1];	895	static AV *coro_ready [PRIO_MAX-PRIO_MIN+1];
823	static int coro_nready;	896	static int coro_nready;
824		897
825	static void	898	static void
826	coro_enq (pTHX_ SV *sv)	899	coro_enq (SV *coro_sv)
827	{	900	{
828	int prio;
829
830	if (SvTYPE (sv) != SVt_PVHV)
831	croak ("Coro::ready tried to enqueue something that is not a coroutine");
832
833	prio = SvSTATE (sv)->prio;
834
835	av_push (coro_ready [prio - PRIO_MIN], sv);	901	av_push (coro_ready [SvSTATE (coro_sv)->prio - PRIO_MIN], coro_sv);
836	coro_nready++;	902	coro_nready++;
837	}	903	}
838		904
839	static SV *	905	static SV *
840	coro_deq (pTHX_ int min_prio)	906	coro_deq (int min_prio)
841	{	907	{
842	int prio = PRIO_MAX - PRIO_MIN;	908	int prio = PRIO_MAX - PRIO_MIN;
843		909
844	min_prio -= PRIO_MIN;	910	min_prio -= PRIO_MIN;
845	if (min_prio < 0)	911	if (min_prio < 0)
…		…
853	}	919	}
854		920
855	return 0;	921	return 0;
856	}	922	}
857		923
858	static void	924	static int
859	api_ready (SV *coro)	925	api_ready (SV *coro_sv)
860	{	926	{
861	dTHX;	927	struct coro *coro;
862		928
863	if (SvROK (coro))	929	if (SvROK (coro_sv))
864	coro = SvRV (coro);	930	coro_sv = SvRV (coro_sv);
		931
		932	coro = SvSTATE (coro_sv);
		933
		934	if (coro->flags & CF_READY)
		935	return 0;
		936
		937	#if 0 /* this is actually harmless */
		938	if (coro->flags & CF_RUNNING)
		939	croak ("Coro::ready called on currently running coroutine");
		940	#endif
		941
		942	coro->flags \|= CF_READY;
865		943
866	LOCK;	944	LOCK;
867	coro_enq (aTHX_ SvREFCNT_inc (coro));	945	coro_enq (SvREFCNT_inc (coro_sv));
868	UNLOCK;	946	UNLOCK;
869	}
870		947
		948	return 1;
		949	}
		950
871	static void	951	static int
872	api_schedule (void)	952	api_is_ready (SV *coro_sv)
873	{	953	{
874	dTHX;	954	return !!SvSTATE (coro_sv)->flags & CF_READY;
		955	}
875		956
		957	static void
		958	prepare_schedule (struct transfer_args *ta)
		959	{
876	SV prev, next;	960	SV prev, next;
877	SV *current = GvSV (coro_current);
878		961
879	for (;;)	962	for (;;)
880	{	963	{
881	LOCK;	964	LOCK;
882
883	next = coro_deq (aTHX_ PRIO_MIN);	965	next = coro_deq (PRIO_MIN);
		966	UNLOCK;
884		967
885	if (next)	968	if (next)
886	break;	969	break;
887		970
888	UNLOCK;
889
890	{	971	{
891	dSP;	972	dSP;
892		973
893	ENTER;	974	ENTER;
894	SAVETMPS;	975	SAVETMPS;
895		976
896	PUSHMARK (SP);	977	PUSHMARK (SP);
897	PUTBACK;	978	PUTBACK;
898	call_sv (GvSV (coro_idle), G_DISCARD);	979	call_sv (get_sv ("Coro::idle", FALSE), G_DISCARD);
899		980
900	FREETMPS;	981	FREETMPS;
901	LEAVE;	982	LEAVE;
902	}	983	}
903	}	984	}
904		985
905	prev = SvRV (current);	986	prev = SvRV (coro_current);
906	SvRV (current) = next;	987	SvRV_set (coro_current, next);
907		988
908	/* free this only after the transfer */	989	/* free this only after the transfer */
		990	LOCK;
		991	free_coro_mortal ();
		992	UNLOCK;
909	coro_mortal = prev;	993	coro_mortal = prev;
910		994
911	UNLOCK;	995	assert (!SvROK(prev));//D
		996	assert (!SvROK(next));//D
912		997
913	coro_state_transfer (aTHX_ SvSTATE (prev), SvSTATE (next), TRANSFER_SAVE_ALL);	998	ta->prev = SvSTATE (prev);
914	}	999	ta->next = SvSTATE (next);
		1000	ta->flags = TRANSFER_SAVE_ALL;
915		1001
916	static int coro_cede_self;	1002	assert (ta->flags & CF_READY);
		1003	ta->next->flags &= ~CF_READY;
		1004	}
		1005
		1006	static void
		1007	prepare_cede (struct transfer_args *ta)
		1008	{
		1009	api_ready (coro_current);
		1010
		1011	prepare_schedule (ta);
		1012	}
		1013
		1014	static void
		1015	api_schedule (void)
		1016	{
		1017	struct transfer_args ta;
		1018
		1019	prepare_schedule (&ta);
		1020	TRANSFER (ta);
		1021	}
917		1022
918	static void	1023	static void
919	api_cede (void)	1024	api_cede (void)
920	{	1025	{
921	dTHX;	1026	struct transfer_args ta;
922	SV *current = SvREFCNT_inc (SvRV (GvSV (coro_current)));
923		1027
924	LOCK;	1028	prepare_cede (&ta);
925		1029	TRANSFER (ta);
926	if (coro_cede_self)
927	{
928	AV *runqueue = coro_ready [PRIO_MAX - PRIO_MIN];
929	av_unshift (runqueue, 1);
930	av_store (runqueue, 0, current);
931	coro_nready++;
932	coro_cede_self = 0;
933	}
934	else
935	coro_enq (aTHX_ current);
936
937	UNLOCK;
938
939	api_schedule ();
940	}	1030	}
941		1031
942	MODULE = Coro::State PACKAGE = Coro::State	1032	MODULE = Coro::State PACKAGE = Coro::State
943		1033
944	PROTOTYPES: DISABLE	1034	PROTOTYPES: DISABLE
…		…
959	main_mainstack = PL_mainstack;	1049	main_mainstack = PL_mainstack;
960		1050
961	coroapi.ver = CORO_API_VERSION;	1051	coroapi.ver = CORO_API_VERSION;
962	coroapi.transfer = api_transfer;	1052	coroapi.transfer = api_transfer;
963		1053
964	Newz (0, main_stack, 1, coro_stack);
965	main_stack->idle_sp = (void *)-1;
966
967	assert (("PRIO_NORMAL must be 0", !PRIO_NORMAL));	1054	assert (("PRIO_NORMAL must be 0", !PRIO_NORMAL));
968	}	1055	}
969		1056
970	SV *	1057	SV *
971	new (char *klass, ...)	1058	new (char *klass, ...)
…		…
975	HV *hv;	1062	HV *hv;
976	int i;	1063	int i;
977		1064
978	Newz (0, coro, 1, struct coro);	1065	Newz (0, coro, 1, struct coro);
979	coro->args = newAV ();	1066	coro->args = newAV ();
		1067	coro->flags = CF_NEW;
980		1068
981	hv = newHV ();	1069	hv = newHV ();
982	sv_magicext ((SV )hv, 0, PERL_MAGIC_ext, &coro_state_vtbl, (char )coro, 0)->mg_flags \|= MGf_DUP;	1070	sv_magicext ((SV )hv, 0, PERL_MAGIC_ext, &coro_state_vtbl, (char )coro, 0)->mg_flags \|= MGf_DUP;
983	RETVAL = sv_bless (newRV_noinc ((SV *)hv), gv_stashpv (klass, 1));	1071	RETVAL = sv_bless (newRV_noinc ((SV *)hv), gv_stashpv (klass, 1));
984		1072
985	av_push (coro->args, newSVsv (RETVAL));
986	for (i = 1; i < items; i++)	1073	for (i = 1; i < items; i++)
987	av_push (coro->args, newSVsv (ST (i)));	1074	av_push (coro->args, newSVsv (ST (i)));
988
989	coro->stack = main_stack;
990	/coro->mainstack = 0; //actual work is done inside transfer /
991	/coro->stack = 0;/
992	}	1075	}
993	OUTPUT:	1076	OUTPUT:
994	RETVAL	1077	RETVAL
995		1078
996	void	1079	void
997	transfer (prev, next, flags)	1080	_set_stacklevel (...)
998	SV *prev	1081	ALIAS:
999	SV *next	1082	Coro::State::transfer = 1
1000	int flags	1083	Coro::schedule = 2
		1084	Coro::cede = 3
1001	CODE:	1085	CODE:
1002	PUTBACK;
1003	coro_state_transfer (aTHX_ SvSTATE (prev), SvSTATE (next), flags);
1004	SPAGAIN;
1005
1006	int
1007	prio (Coro::State coro, int newprio = 0)
1008	ALIAS:
1009	nice = 1
1010	CODE:
1011	{	1086	{
1012	RETVAL = coro->prio;	1087	struct transfer_args ta;
1013		1088
1014	if (items > 1)	1089	switch (ix)
1015	{	1090	{
		1091	case 0:
		1092	ta.prev = (struct coro )INT2PTR (coro_cctx , SvIV (ST (0)));
		1093	ta.next = 0;
		1094	ta.flags = TRANSFER_SET_STACKLEVEL;
		1095	break;
		1096
		1097	case 1:
1016	if (ix)	1098	if (items != 3)
1017	newprio += coro->prio;	1099	croak ("Coro::State::transfer (prev,next,flags) expects three arguments, not %d", items);
1018		1100
1019	if (newprio < PRIO_MIN) newprio = PRIO_MIN;	1101	prepare_transfer (&ta, ST (0), ST (1), SvIV (ST (2)));
1020	if (newprio > PRIO_MAX) newprio = PRIO_MAX;	1102	break;
1021		1103
1022	coro->prio = newprio;	1104	case 2:
		1105	prepare_schedule (&ta);
		1106	break;
		1107
		1108	case 3:
		1109	prepare_cede (&ta);
		1110	break;
1023	}	1111	}
1024	}
1025		1112
1026	void	1113	TRANSFER (ta);
1027	_clear_idle_sp (Coro::State self)	1114	}
1028	CODE:
1029	self->stack->idle_sp = 0;
1030		1115
1031	void	1116	void
1032	_clone_state_from (SV dst, SV src)	1117	_clone_state_from (SV dst, SV src)
1033	CODE:	1118	CODE:
1034	{	1119	{
…		…
1045	int code	1130	int code
1046	PROTOTYPE: $	1131	PROTOTYPE: $
1047	CODE:	1132	CODE:
1048	_exit (code);	1133	_exit (code);
1049		1134
1050	MODULE = Coro::State PACKAGE = Coro::Cont	1135	int
		1136	cctx_count ()
		1137	CODE:
		1138	RETVAL = cctx_count;
		1139	OUTPUT:
		1140	RETVAL
1051		1141
1052	void	1142	int
1053	yield (...)	1143	cctx_idle ()
1054	PROTOTYPE: @	1144	CODE:
1055	CODE:	1145	RETVAL = cctx_idle;
1056	{	1146	OUTPUT:
1057	SV *yieldstack;	1147	RETVAL
1058	SV *sv;
1059	AV *defav = GvAV (PL_defgv);
1060	struct coro prev, next;
1061
1062	yieldstack = *hv_fetch (
1063	(HV *)SvRV (GvSV (coro_current)),
1064	"yieldstack", sizeof ("yieldstack") - 1,
1065	0
1066	);
1067
1068	/* set up @_ -- ugly */
1069	av_clear (defav);
1070	av_fill (defav, items - 1);
1071	while (items--)
1072	av_store (defav, items, SvREFCNT_inc (ST(items)));
1073
1074	sv = av_pop ((AV *)SvRV (yieldstack));
1075	prev = SvSTATE (av_fetch ((AV )SvRV (sv), 0, 0));
1076	next = SvSTATE (av_fetch ((AV )SvRV (sv), 1, 0));
1077	SvREFCNT_dec (sv);
1078
1079	coro_state_transfer (aTHX_ prev, next, 0);
1080	}
1081		1148
1082	MODULE = Coro::State PACKAGE = Coro	1149	MODULE = Coro::State PACKAGE = Coro
1083		1150
1084	BOOT:	1151	BOOT:
1085	{	1152	{
…		…
1092	newCONSTSUB (coro_stash, "PRIO_NORMAL", newSViv (PRIO_NORMAL));	1159	newCONSTSUB (coro_stash, "PRIO_NORMAL", newSViv (PRIO_NORMAL));
1093	newCONSTSUB (coro_stash, "PRIO_LOW", newSViv (PRIO_LOW));	1160	newCONSTSUB (coro_stash, "PRIO_LOW", newSViv (PRIO_LOW));
1094	newCONSTSUB (coro_stash, "PRIO_IDLE", newSViv (PRIO_IDLE));	1161	newCONSTSUB (coro_stash, "PRIO_IDLE", newSViv (PRIO_IDLE));
1095	newCONSTSUB (coro_stash, "PRIO_MIN", newSViv (PRIO_MIN));	1162	newCONSTSUB (coro_stash, "PRIO_MIN", newSViv (PRIO_MIN));
1096		1163
1097	coro_current = gv_fetchpv ("Coro::current", TRUE, SVt_PV);	1164	coro_current = get_sv ("Coro::current", FALSE);
1098	coro_idle = gv_fetchpv ("Coro::idle" , TRUE, SVt_PV);	1165	SvREADONLY_on (coro_current);
1099		1166
1100	for (i = PRIO_MAX - PRIO_MIN + 1; i--; )	1167	for (i = PRIO_MAX - PRIO_MIN + 1; i--; )
1101	coro_ready[i] = newAV ();	1168	coro_ready[i] = newAV ();
1102		1169
1103	{	1170	{
1104	SV *sv = perl_get_sv("Coro::API", 1);	1171	SV *sv = perl_get_sv("Coro::API", 1);
1105		1172
1106	coroapi.schedule = api_schedule;	1173	coroapi.schedule = api_schedule;
1107	coroapi.cede = api_cede;	1174	coroapi.cede = api_cede;
1108	coroapi.ready = api_ready;	1175	coroapi.ready = api_ready;
		1176	coroapi.is_ready = api_is_ready;
1109	coroapi.nready = &coro_nready;	1177	coroapi.nready = &coro_nready;
1110	coroapi.current = coro_current;	1178	coroapi.current = coro_current;
1111		1179
1112	GCoroAPI = &coroapi;	1180	GCoroAPI = &coroapi;
1113	sv_setiv (sv, (IV)&coroapi);	1181	sv_setiv (sv, (IV)&coroapi);
1114	SvREADONLY_on (sv);	1182	SvREADONLY_on (sv);
1115	}	1183	}
1116	}	1184	}
1117		1185
1118	void	1186	int
		1187	prio (Coro::State coro, int newprio = 0)
		1188	ALIAS:
		1189	nice = 1
		1190	CODE:
		1191	{
		1192	RETVAL = coro->prio;
		1193
		1194	if (items > 1)
		1195	{
		1196	if (ix)
		1197	newprio += coro->prio;
		1198
		1199	if (newprio < PRIO_MIN) newprio = PRIO_MIN;
		1200	if (newprio > PRIO_MAX) newprio = PRIO_MAX;
		1201
		1202	coro->prio = newprio;
		1203	}
		1204	}
		1205
		1206	SV *
1119	ready (SV *self)	1207	ready (SV *self)
1120	PROTOTYPE: $	1208	PROTOTYPE: $
1121	CODE:	1209	CODE:
1122	api_ready (self);	1210	RETVAL = boolSV (api_ready (self));
		1211	OUTPUT:
		1212	RETVAL
		1213
		1214	SV *
		1215	is_ready (SV *self)
		1216	PROTOTYPE: $
		1217	CODE:
		1218	RETVAL = boolSV (api_is_ready (self));
		1219	OUTPUT:
		1220	RETVAL
1123		1221
1124	int	1222	int
1125	nready (...)	1223	nready (...)
1126	PROTOTYPE:	1224	PROTOTYPE:
1127	CODE:	1225	CODE:
1128	RETVAL = coro_nready;	1226	RETVAL = coro_nready;
1129	OUTPUT:	1227	OUTPUT:
1130	RETVAL	1228	RETVAL
1131		1229
1132	void	1230	void
1133	schedule (...)	1231	_set_current (SV *current)
1134	PROTOTYPE:	1232	PROTOTYPE: $
1135	CODE:	1233	CODE:
1136	api_schedule ();	1234	SvREFCNT_dec (SvRV (coro_current));
1137		1235	SvRV_set (coro_current, SvREFCNT_inc (SvRV (current)));
1138	void
1139	_set_cede_self ()
1140	CODE:
1141	coro_cede_self = 1;
1142
1143	void
1144	cede (...)
1145	PROTOTYPE:
1146	CODE:
1147	api_cede ();
1148		1236
1149	MODULE = Coro::State PACKAGE = Coro::AIO	1237	MODULE = Coro::State PACKAGE = Coro::AIO
1150		1238
1151	SV *	1239	SV *
1152	_get_state ()	1240	_get_state ()
1153	CODE:	1241	CODE:
1154	{	1242	{
1155	struct {	1243	struct io_state *data;
1156	int errorno;
1157	int laststype;
1158	int laststatval;
1159	Stat_t statcache;
1160	} data;
1161		1244
		1245	RETVAL = newSV (sizeof (struct io_state));
		1246	data = (struct io_state *)SvPVX (RETVAL);
		1247	SvCUR_set (RETVAL, sizeof (struct io_state));
		1248	SvPOK_only (RETVAL);
		1249
1162	data.errorno = errno;	1250	data->errorno = errno;
1163	data.laststype = PL_laststype;	1251	data->laststype = PL_laststype;
1164	data.laststatval = PL_laststatval;	1252	data->laststatval = PL_laststatval;
1165	data.statcache = PL_statcache;	1253	data->statcache = PL_statcache;
1166
1167	RETVAL = newSVpvn ((char *)&data, sizeof data);
1168	}	1254	}
1169	OUTPUT:	1255	OUTPUT:
1170	RETVAL	1256	RETVAL
1171		1257
1172	void	1258	void
1173	_set_state (char *data_)	1259	_set_state (char *data_)
1174	PROTOTYPE: $	1260	PROTOTYPE: $
1175	CODE:	1261	CODE:
1176	{	1262	{
1177	struct {	1263	struct io_state data = (void )data_;
1178	int errorno;
1179	int laststype;
1180	int laststatval;
1181	Stat_t statcache;
1182	} data = (void )data_;
1183		1264
1184	errno = data->errorno;	1265	errno = data->errorno;
1185	PL_laststype = data->laststype;	1266	PL_laststype = data->laststype;
1186	PL_laststatval = data->laststatval;	1267	PL_laststatval = data->laststatval;
1187	PL_statcache = data->statcache;	1268	PL_statcache = data->statcache;
1188	}	1269	}
		1270

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Comparing Coro/Coro/State.xs (file contents): Revision 1.91 by root, Sat Nov 25 01:14:11 2006 UTC vs. Revision 1.121 by root, Sat Dec 2 20:40:25 2006 UTC

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Comparing Coro/Coro/State.xs (file contents):
Revision 1.91 by root, Sat Nov 25 01:14:11 2006 UTC vs.
Revision 1.121 by root, Sat Dec 2 20:40:25 2006 UTC