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

Comparing Coro/Coro/State.xs (file contents):
Revision 1.97 by root, Sun Nov 26 21:21:14 2006 UTC vs.
Revision 1.122 by root, Mon Dec 4 13:47:56 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
54	# ifndef PAGESIZE	65	# ifndef PAGESIZE
55	# define PAGESIZE pagesize	66	# define PAGESIZE pagesize
56	# define BOOT_PAGESIZE pagesize = sysconf (_SC_PAGESIZE)	67	# define BOOT_PAGESIZE pagesize = sysconf (_SC_PAGESIZE)
57	static long pagesize;	68	static long pagesize;
58	# else	69	# else
59	# define BOOT_PAGESIZE	70	# define BOOT_PAGESIZE (void)0
60	# endif	71	# endif
		72	#else
		73	# define PAGESIZE 0
		74	# define BOOT_PAGESIZE (void)0
61	#endif	75	#endif
62		76
63	/* 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
64	* 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
65	* and should be unique. */	79	* and should be unique. */
66	#define dSTACKLEVEL int stacklevel	80	#define dSTACKLEVEL int stacklevel
67	#define STACKLEVEL ((void *)&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
		85	#if __GNUC__ >= 3
		86	# define attribute(x) __attribute__(x)
		87	#else
		88	# define attribute(x)
		89	#endif
		90
		91	#define NOINLINE attribute ((noinline))
		92
71	#include "CoroAPI.h"	93	#include "CoroAPI.h"
72
73	#define TRANSFER_SET_STACKLEVEL 0x8bfbfbfb /* magic cookie */
74		94
75	#ifdef USE_ITHREADS	95	#ifdef USE_ITHREADS
76	static perl_mutex coro_mutex;	96	static perl_mutex coro_mutex;
77	# define LOCK do { MUTEX_LOCK (&coro_mutex); } while (0)	97	# define LOCK do { MUTEX_LOCK (&coro_mutex); } while (0)
78	# define UNLOCK do { MUTEX_UNLOCK (&coro_mutex); } while (0)	98	# define UNLOCK do { MUTEX_UNLOCK (&coro_mutex); } while (0)
79	#else	99	#else
80	# define LOCK (void)0	100	# define LOCK (void)0
81	# define UNLOCK (void)0	101	# define UNLOCK (void)0
82	#endif	102	#endif
83		103
		104	struct io_state
		105	{
		106	int errorno;
		107	I32 laststype;
		108	int laststatval;
		109	Stat_t statcache;
		110	};
		111
84	static struct CoroAPI coroapi;	112	static struct CoroAPI coroapi;
85	static AV main_mainstack; / used to differentiate between $main and others */	113	static AV main_mainstack; / used to differentiate between $main and others */
86	static HV coro_state_stash, coro_stash;	114	static HV coro_state_stash, coro_stash;
87	static SV coro_mortal; / will be freed after next transfer */	115	static SV coro_mortal; / will be freed after next transfer */
88		116
		117	static struct coro_cctx *cctx_first;
		118	static int cctx_count, cctx_idle;
		119
89	/* this is a structure representing a c-level coroutine */	120	/* this is a structure representing a c-level coroutine */
90	typedef struct coro_stack {	121	typedef struct coro_cctx {
91	struct coro_stack *next;	122	struct coro_cctx *next;
92		123
93	/* the stack */	124	/* the stack */
94	void *sptr;	125	void *sptr;
95	long ssize; /* positive == mmap, otherwise malloc */	126	long ssize; /* positive == mmap, otherwise malloc */
96		127
97	/* cpu state */	128	/* cpu state */
98	void idle_sp; / sp of top-level transfer/schedule/cede call */	129	void idle_sp; / sp of top-level transfer/schedule/cede call */
99	JMPENV *top_env;	130	JMPENV *top_env;
100	coro_context cctx;	131	coro_context cctx;
101	} coro_stack;	132
		133	int inuse;
		134
		135	#if USE_VALGRIND
		136	int valgrind_id;
		137	#endif
		138	} coro_cctx;
		139
		140	enum {
		141	CF_RUNNING = 0x0001, /* coroutine is running */
		142	CF_READY = 0x0002, /* coroutine is ready */
		143	CF_NEW = 0x0004, /* ahs never been switched to */
		144	};
102		145
103	/* this is a structure representing a perl-level coroutine */	146	/* this is a structure representing a perl-level coroutine */
104	struct coro {	147	struct coro {
105	/* the c coroutine allocated to this perl coroutine, if any */	148	/* the c coroutine allocated to this perl coroutine, if any */
106	coro_stack *stack;	149	coro_cctx *cctx;
107		150
108	/* data associated with this coroutine (initial args) */	151	/* data associated with this coroutine (initial args) */
109	AV *args;	152	AV *args;
110	int refcnt;	153	int refcnt;
		154	int save; /* CORO_SAVE flags */
		155	int flags; /* CF_ flags */
111		156
112	/* optionally saved, might be zero */	157	/* optionally saved, might be zero */
113	AV *defav;	158	AV defav; / @_ */
114	SV *defsv;	159	SV defsv; / $_ */
115	SV *errsv;	160	SV errsv; / $@ */
		161	SV irssv; / $/ */
116		162
117	/* saved global state not related to stacks */	163	#define VAR(name,type) type name;
118	U8 dowarn;	164	# include "state.h"
119	I32 in_eval;	165	#undef VAR
120
121	/* the stacks and related info (callchain etc..) */
122	PERL_SI *curstackinfo;
123	AV *curstack;
124	AV *mainstack;
125	SV **stack_sp;
126	OP *op;
127	SV **curpad;
128	AV *comppad;
129	CV *compcv;
130	SV **stack_base;
131	SV **stack_max;
132	SV **tmps_stack;
133	I32 tmps_floor;
134	I32 tmps_ix;
135	I32 tmps_max;
136	I32 *markstack;
137	I32 *markstack_ptr;
138	I32 *markstack_max;
139	I32 *scopestack;
140	I32 scopestack_ix;
141	I32 scopestack_max;
142	ANY *savestack;
143	I32 savestack_ix;
144	I32 savestack_max;
145	OP **retstack;
146	I32 retstack_ix;
147	I32 retstack_max;
148	PMOP *curpm;
149	COP *curcop;
150		166
151	/* coro process data */	167	/* coro process data */
152	int prio;	168	int prio;
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 is probably cleaner, but also slower? */	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));
265	#define SAVE(state,flags) save_state(aTHX_ (state),(flags));
266
267	#define REPLACE_SV(sv,val) SB SvREFCNT_dec(sv); (sv) = (val); (val) = 0; SE	294	#define REPLACE_SV(sv,val) SB SvREFCNT_dec (sv); (sv) = (val); (val) = 0; SE
268		295
269	static void	296	static void
270	load_state(pTHX_ Coro__State c)	297	load_perl (Coro__State c)
271	{	298	{
272	PL_dowarn = c->dowarn;	299	#define VAR(name,type) PL_ ## name = c->name;
273	PL_in_eval = c->in_eval;	300	# include "state.h"
274		301	#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		302
306	if (c->defav) REPLACE_SV (GvAV (PL_defgv), c->defav);	303	if (c->defav) REPLACE_SV (GvAV (PL_defgv), c->defav);
307	if (c->defsv) REPLACE_SV (DEFSV , c->defsv);	304	if (c->defsv) REPLACE_SV (DEFSV , c->defsv);
308	if (c->errsv) REPLACE_SV (ERRSV , c->errsv);	305	if (c->errsv) REPLACE_SV (ERRSV , c->errsv);
		306	if (c->irssv) REPLACE_SV (PL_rs , c->irssv);
309		307
310	{	308	{
311	dSP;	309	dSP;
312	CV *cv;	310	CV *cv;
313		311
314	/* now do the ugly restore mess */	312	/* now do the ugly restore mess */
315	while ((cv = (CV *)POPs))	313	while ((cv = (CV *)POPs))
316	{	314	{
317	AV padlist = (AV )POPs;
318
319	if (padlist)
320	{
321	put_padlist (aTHX_ cv); /* mark this padlist as available */	315	put_padlist (cv); /* mark this padlist as available */
322	CvPADLIST(cv) = padlist;	316	CvDEPTH (cv) = PTR2IV (POPs);
323	}	317	CvPADLIST (cv) = (AV *)POPs;
324
325	++CvDEPTH(cv);
326	}	318	}
327		319
328	PUTBACK;	320	PUTBACK;
329	}	321	}
330	}	322	}
331		323
332	static void	324	static void
333	save_state(pTHX_ Coro__State c, int flags)	325	save_perl (Coro__State c)
334	{	326	{
335	{	327	{
336	dSP;	328	dSP;
337	I32 cxix = cxstack_ix;	329	I32 cxix = cxstack_ix;
338	PERL_CONTEXT *ccstk = cxstack;	330	PERL_CONTEXT *ccstk = cxstack;
…		…
349	{	341	{
350	while (cxix >= 0)	342	while (cxix >= 0)
351	{	343	{
352	PERL_CONTEXT *cx = &ccstk[cxix--];	344	PERL_CONTEXT *cx = &ccstk[cxix--];
353		345
354	if (CxTYPE(cx) == CXt_SUB)	346	if (CxTYPE (cx) == CXt_SUB)
355	{	347	{
356	CV *cv = cx->blk_sub.cv;	348	CV *cv = cx->blk_sub.cv;
		349
357	if (CvDEPTH(cv))	350	if (CvDEPTH (cv))
358	{	351	{
359	EXTEND (SP, CvDEPTH(cv)*2);	352	EXTEND (SP, 3);
360		353
361	while (--CvDEPTH(cv))
362	{
363	/* this tells the restore code to increment CvDEPTH */
364	PUSHs (Nullsv);
365	PUSHs ((SV *)cv);
366	}
367
368	PUSHs ((SV *)CvPADLIST(cv));	354	PUSHs ((SV *)CvPADLIST (cv));
		355	PUSHs (INT2PTR (SV *, CvDEPTH (cv)));
369	PUSHs ((SV *)cv);	356	PUSHs ((SV *)cv);
370		357
		358	CvDEPTH (cv) = 0;
371	get_padlist (aTHX_ cv);	359	get_padlist (cv);
372	}	360	}
373	}	361	}
374	#ifdef CXt_FORMAT	362	#ifdef CXt_FORMAT
375	else if (CxTYPE(cx) == CXt_FORMAT)	363	else if (CxTYPE (cx) == CXt_FORMAT)
376	{	364	{
377	/* I never used formats, so how should I know how these are implemented? */	365	/* I never used formats, so how should I know how these are implemented? */
378	/* my bold guess is as a simple, plain sub... */	366	/* my bold guess is as a simple, plain sub... */
379	croak ("CXt_FORMAT not yet handled. Don't switch coroutines from within formats");	367	croak ("CXt_FORMAT not yet handled. Don't switch coroutines from within formats");
380	}	368	}
…		…
390	}	378	}
391		379
392	PUTBACK;	380	PUTBACK;
393	}	381	}
394		382
395	c->defav = flags & TRANSFER_SAVE_DEFAV ? (AV *)SvREFCNT_inc (GvAV (PL_defgv)) : 0;	383	c->defav = c->save & CORO_SAVE_DEFAV ? (AV *)SvREFCNT_inc (GvAV (PL_defgv)) : 0;
396	c->defsv = flags & TRANSFER_SAVE_DEFSV ? SvREFCNT_inc (DEFSV) : 0;	384	c->defsv = c->save & CORO_SAVE_DEFSV ? SvREFCNT_inc (DEFSV) : 0;
397	c->errsv = flags & TRANSFER_SAVE_ERRSV ? SvREFCNT_inc (ERRSV) : 0;	385	c->errsv = c->save & CORO_SAVE_ERRSV ? SvREFCNT_inc (ERRSV) : 0;
		386	c->irssv = c->save & CORO_SAVE_IRSSV ? SvREFCNT_inc (PL_rs) : 0;
398		387
399	c->dowarn = PL_dowarn;	388	#define VAR(name,type)c->name = PL_ ## name;
400	c->in_eval = PL_in_eval;	389	# include "state.h"
401		390	#undef VAR
402	c->curstackinfo = PL_curstackinfo;
403	c->curstack = PL_curstack;
404	c->mainstack = PL_mainstack;
405	c->stack_sp = PL_stack_sp;
406	c->op = PL_op;
407	c->curpad = PL_curpad;
408	c->comppad = PL_comppad;
409	c->compcv = PL_compcv;
410	c->stack_base = PL_stack_base;
411	c->stack_max = PL_stack_max;
412	c->tmps_stack = PL_tmps_stack;
413	c->tmps_floor = PL_tmps_floor;
414	c->tmps_ix = PL_tmps_ix;
415	c->tmps_max = PL_tmps_max;
416	c->markstack = PL_markstack;
417	c->markstack_ptr = PL_markstack_ptr;
418	c->markstack_max = PL_markstack_max;
419	c->scopestack = PL_scopestack;
420	c->scopestack_ix = PL_scopestack_ix;
421	c->scopestack_max = PL_scopestack_max;
422	c->savestack = PL_savestack;
423	c->savestack_ix = PL_savestack_ix;
424	c->savestack_max = PL_savestack_max;
425	#if PERL_VERSION < 9
426	c->retstack = PL_retstack;
427	c->retstack_ix = PL_retstack_ix;
428	c->retstack_max = PL_retstack_max;
429	#endif
430	c->curpm = PL_curpm;
431	c->curcop = PL_curcop;
432	}	391	}
433		392
434	/*	393	/*
435	* allocate various perl stacks. This is an exact copy	394	* allocate various perl stacks. This is an exact copy
436	* of perl.c:init_stacks, except that it uses less memory	395	* of perl.c:init_stacks, except that it uses less memory
437	* on the (sometimes correct) assumption that coroutines do	396	* on the (sometimes correct) assumption that coroutines do
438	* not usually need a lot of stackspace.	397	* not usually need a lot of stackspace.
439	*/	398	*/
440	static void	399	static void
441	coro_init_stacks (pTHX)	400	coro_init_stacks ()
442	{	401	{
443	LOCK;
444
445	PL_curstackinfo = new_stackinfo(96, 1024/sizeof(PERL_CONTEXT) - 1);	402	PL_curstackinfo = new_stackinfo(128, 1024/sizeof(PERL_CONTEXT));
446	PL_curstackinfo->si_type = PERLSI_MAIN;	403	PL_curstackinfo->si_type = PERLSI_MAIN;
447	PL_curstack = PL_curstackinfo->si_stack;	404	PL_curstack = PL_curstackinfo->si_stack;
448	PL_mainstack = PL_curstack; /* remember in case we switch stacks */	405	PL_mainstack = PL_curstack; /* remember in case we switch stacks */
449		406
450	PL_stack_base = AvARRAY(PL_curstack);	407	PL_stack_base = AvARRAY(PL_curstack);
451	PL_stack_sp = PL_stack_base;	408	PL_stack_sp = PL_stack_base;
452	PL_stack_max = PL_stack_base + AvMAX(PL_curstack);	409	PL_stack_max = PL_stack_base + AvMAX(PL_curstack);
453		410
454	New(50,PL_tmps_stack,96,SV*);	411	New(50,PL_tmps_stack,128,SV*);
455	PL_tmps_floor = -1;	412	PL_tmps_floor = -1;
456	PL_tmps_ix = -1;	413	PL_tmps_ix = -1;
457	PL_tmps_max = 96;	414	PL_tmps_max = 128;
458		415
459	New(54,PL_markstack,16,I32);	416	New(54,PL_markstack,32,I32);
460	PL_markstack_ptr = PL_markstack;	417	PL_markstack_ptr = PL_markstack;
461	PL_markstack_max = PL_markstack + 16;	418	PL_markstack_max = PL_markstack + 32;
462		419
463	#ifdef SET_MARK_OFFSET	420	#ifdef SET_MARK_OFFSET
464	SET_MARK_OFFSET;	421	SET_MARK_OFFSET;
465	#endif	422	#endif
466		423
467	New(54,PL_scopestack,16,I32);	424	New(54,PL_scopestack,32,I32);
468	PL_scopestack_ix = 0;	425	PL_scopestack_ix = 0;
469	PL_scopestack_max = 16;	426	PL_scopestack_max = 32;
470		427
471	New(54,PL_savestack,96,ANY);	428	New(54,PL_savestack,64,ANY);
472	PL_savestack_ix = 0;	429	PL_savestack_ix = 0;
473	PL_savestack_max = 96;	430	PL_savestack_max = 64;
474		431
475	#if PERL_VERSION < 9	432	#if !PERL_VERSION_ATLEAST (5,9,0)
476	New(54,PL_retstack,8,OP*);	433	New(54,PL_retstack,16,OP*);
477	PL_retstack_ix = 0;	434	PL_retstack_ix = 0;
478	PL_retstack_max = 8;	435	PL_retstack_max = 16;
479	#endif	436	#endif
480
481	UNLOCK;
482	}	437	}
483		438
484	/*	439	/*
485	* destroy the stacks, the callchain etc...	440	* destroy the stacks, the callchain etc...
486	*/	441	*/
487	static void	442	static void
488	destroy_stacks(pTHX)	443	coro_destroy_stacks ()
489	{	444	{
490	if (!IN_DESTRUCT)	445	if (!IN_DESTRUCT)
491	{	446	{
492	/* is this ugly, I ask? */	447	/* is this ugly, I ask? */
493	LEAVE_SCOPE (0);	448	LEAVE_SCOPE (0);
…		…
524		479
525	Safefree (PL_tmps_stack);	480	Safefree (PL_tmps_stack);
526	Safefree (PL_markstack);	481	Safefree (PL_markstack);
527	Safefree (PL_scopestack);	482	Safefree (PL_scopestack);
528	Safefree (PL_savestack);	483	Safefree (PL_savestack);
529	#if PERL_VERSION < 9	484	#if !PERL_VERSION_ATLEAST (5,9,0)
530	Safefree (PL_retstack);	485	Safefree (PL_retstack);
531	#endif	486	#endif
532	}	487	}
533		488
534	static void	489	static void
535	setup_coro (struct coro *coro)	490	setup_coro (struct coro *coro)
536	{	491	{
537	/*	492	/*
538	* emulate part of the perl startup here.	493	* emulate part of the perl startup here.
539	*/	494	*/
540	dTHX;
541	dSP;
542	UNOP myop;
543	SV sub_init = (SV )get_cv ("Coro::State::coro_init", FALSE);
544		495
545	coro_init_stacks (aTHX);	496	coro_init_stacks ();
546	/PL_curcop = 0;/	497
547	/PL_in_eval = PL_in_eval;/ /* inherit */	498	PL_curcop = &PL_compiling;
		499	PL_in_eval = EVAL_NULL;
		500	PL_curpm = 0;
		501	PL_localizing = 0;
		502	PL_dirty = 0;
		503	PL_restartop = 0;
		504
		505	{
		506	dSP;
		507	LOGOP myop;
		508
548	SvREFCNT_dec (GvAV (PL_defgv));	509	SvREFCNT_dec (GvAV (PL_defgv));
549	GvAV (PL_defgv) = coro->args; coro->args = 0;	510	GvAV (PL_defgv) = coro->args; coro->args = 0;
550		511
551	SPAGAIN;
552
553	Zero (&myop, 1, UNOP);	512	Zero (&myop, 1, LOGOP);
554	myop.op_next = Nullop;	513	myop.op_next = Nullop;
555	myop.op_flags = OPf_WANT_VOID;	514	myop.op_flags = OPf_WANT_VOID;
556		515
		516	PUSHMARK (SP);
		517	XPUSHs ((SV *)get_cv ("Coro::State::_coro_init", FALSE));
		518	PUTBACK;
557	PL_op = (OP *)&myop;	519	PL_op = (OP *)&myop;
558
559	PUSHMARK(SP);
560	XPUSHs (sub_init);
561	PUTBACK;
562	PL_op = PL_ppaddr[OP_ENTERSUB](aTHX);	520	PL_op = PL_ppaddr[OP_ENTERSUB](aTHX);
563	SPAGAIN;	521	SPAGAIN;
		522	}
564		523
565	ENTER; /* necessary e.g. for dounwind */	524	ENTER; /* necessary e.g. for dounwind */
566	}	525	}
567		526
568	static void	527	static void
569	free_coro_mortal ()	528	free_coro_mortal ()
570	{	529	{
571	if (coro_mortal)	530	if (coro_mortal)
572	{	531	{
573	dTHX;
574
575	SvREFCNT_dec (coro_mortal);	532	SvREFCNT_dec (coro_mortal);
576	coro_mortal = 0;	533	coro_mortal = 0;
577	}	534	}
578	}	535	}
579		536
		537	/* inject a fake call to Coro::State::_cctx_init into the execution */
		538	static void NOINLINE
		539	prepare_cctx (coro_cctx *cctx)
		540	{
		541	dSP;
		542	LOGOP myop;
		543
		544	Zero (&myop, 1, LOGOP);
		545	myop.op_next = PL_op;
		546	myop.op_flags = OPf_WANT_VOID \| OPf_STACKED;
		547
		548	PUSHMARK (SP);
		549	EXTEND (SP, 2);
		550	PUSHs (sv_2mortal (newSViv (PTR2IV (cctx))));
		551	PUSHs ((SV *)get_cv ("Coro::State::_cctx_init", FALSE));
		552	PUTBACK;
		553	PL_op = (OP *)&myop;
		554	PL_op = PL_ppaddr[OP_ENTERSUB](aTHX);
		555	SPAGAIN;
		556	}
		557
580	static void	558	static void
581	coro_run (void *arg)	559	coro_run (void *arg)
582	{	560	{
		561	/* coro_run is the alternative tail of transfer(), so unlock here. */
		562	UNLOCK;
		563
583	/*	564	/*
584	* this is a _very_ stripped down perl interpreter ;)	565	* this is a _very_ stripped down perl interpreter ;)
585	*/	566	*/
586	dTHX;
587	int ret;
588
589	UNLOCK;
590
591	PL_top_env = &PL_start_env;	567	PL_top_env = &PL_start_env;
592		568
593	sv_setiv (get_sv ("Coro::State::cctx_stack", FALSE), PTR2IV ((coro_stack *)arg));	569	/* inject call to cctx_init */
594	sv_setiv (get_sv ("Coro::State::cctx_restartop", FALSE), PTR2IV (PL_op));	570	prepare_cctx ((coro_cctx *)arg);
595
596	/* continue at cctx_init, without entersub */
597	PL_restartop = CvSTART (get_cv ("Coro::State::cctx_init", FALSE));
598		571
599	/* somebody will hit me for both perl_run and PL_restartop */	572	/* somebody will hit me for both perl_run and PL_restartop */
600	ret = perl_run (aTHX_ PERL_GET_CONTEXT);	573	PL_restartop = PL_op;
601	printf ("ret %d\n", ret);//D	574	perl_run (PL_curinterp);
602		575
603	fputs ("FATAL: C coroutine fell over the edge of the world, aborting.\n", stderr);	576	fputs ("FATAL: C coroutine fell over the edge of the world, aborting. Did you call exit in a coroutine?\n", stderr);
604	abort ();	577	abort ();
605	}	578	}
606		579
607	static coro_stack *	580	static coro_cctx *
608	stack_new ()	581	cctx_new ()
609	{	582	{
610	coro_stack *stack;	583	coro_cctx *cctx;
611		584
		585	++cctx_count;
		586
612	New (0, stack, 1, coro_stack);	587	New (0, cctx, 1, coro_cctx);
613		588
614	#if HAVE_MMAP	589	#if HAVE_MMAP
615		590
616	stack->ssize = ((STACKSIZE * sizeof (long) + PAGESIZE - 1) / PAGESIZE + STACKGUARD) * PAGESIZE;	591	cctx->ssize = ((STACKSIZE * sizeof (long) + PAGESIZE - 1) / PAGESIZE + STACKGUARD) * PAGESIZE;
617	/* mmap suppsedly does allocate-on-write for us */	592	/* mmap supposedly does allocate-on-write for us */
618	stack->sptr = mmap (0, stack->ssize, PROT_EXEC\|PROT_READ\|PROT_WRITE, MAP_PRIVATE\|MAP_ANONYMOUS, 0, 0);	593	cctx->sptr = mmap (0, cctx->ssize, PROT_EXEC\|PROT_READ\|PROT_WRITE, MAP_PRIVATE\|MAP_ANONYMOUS, 0, 0);
619		594
620	if (stack->sptr == (void *)-1)	595	if (cctx->sptr == (void *)-1)
621	{	596	{
622	perror ("FATAL: unable to mmap stack for coroutine");	597	perror ("FATAL: unable to mmap stack for coroutine");
623	_exit (EXIT_FAILURE);	598	_exit (EXIT_FAILURE);
624	}	599	}
625		600
626	# if STACKGUARD	601	# if STACKGUARD
627	mprotect (stack->sptr, STACKGUARD * PAGESIZE, PROT_NONE);	602	mprotect (cctx->sptr, STACKGUARD * PAGESIZE, PROT_NONE);
628	# endif	603	# endif
629		604
630	#else	605	#else
631		606
632	stack->ssize = STACKSIZE * (long)sizeof (long);	607	cctx->ssize = STACKSIZE * (long)sizeof (long);
633	New (0, stack->sptr, STACKSIZE, long);	608	New (0, cctx->sptr, STACKSIZE, long);
634		609
635	if (!stack->sptr)	610	if (!cctx->sptr)
636	{	611	{
637	perror (stderr, "FATAL: unable to malloc stack for coroutine");	612	perror ("FATAL: unable to malloc stack for coroutine");
638	_exit (EXIT_FAILURE);	613	_exit (EXIT_FAILURE);
639	}	614	}
640		615
641	#endif	616	#endif
642		617
		618	#if USE_VALGRIND
		619	cctx->valgrind_id = VALGRIND_STACK_REGISTER (
		620	STACKGUARD * PAGESIZE + (char *)cctx->sptr,
		621	cctx->ssize + (char *)cctx->sptr
		622	);
		623	#endif
		624
643	coro_create (&stack->cctx, coro_run, (void *)stack, stack->sptr, stack->ssize);	625	coro_create (&cctx->cctx, coro_run, (void *)cctx, cctx->sptr, cctx->ssize);
644		626
645	return stack;	627	return cctx;
646	}	628	}
647		629
648	static void	630	static void
649	stack_free (coro_stack *stack)	631	cctx_destroy (coro_cctx *cctx)
650	{	632	{
651	if (!stack)	633	if (!cctx)
652	return;	634	return;
653		635
		636	--cctx_count;
		637
		638	#if USE_VALGRIND
		639	VALGRIND_STACK_DEREGISTER (cctx->valgrind_id);
		640	#endif
		641
654	#if HAVE_MMAP	642	#if HAVE_MMAP
655	munmap (stack->sptr, stack->ssize);	643	munmap (cctx->sptr, cctx->ssize);
656	#else	644	#else
657	Safefree (stack->sptr);	645	Safefree (cctx->sptr);
658	#endif	646	#endif
659		647
660	Safefree (stack);	648	Safefree (cctx);
661	}	649	}
662		650
663	static coro_stack *stack_first;
664
665	static coro_stack *	651	static coro_cctx *
666	stack_get ()	652	cctx_get ()
667	{	653	{
668	coro_stack *stack;	654	coro_cctx *cctx;
669		655
670	if (stack_first)	656	if (cctx_first)
671	{	657	{
672	stack = stack_first;	658	cctx = cctx_first;
673	stack_first = stack->next;	659	cctx_first = cctx->next;
		660	--cctx_idle;
674	}	661	}
675	else	662	else
676	{	663	{
677	stack = stack_new ();	664	cctx = cctx_new ();
678	PL_op = PL_op->op_next;	665	PL_op = PL_op->op_next;
679	}	666	}
680		667
681	return stack;	668	return cctx;
682	}	669	}
683		670
684	static void	671	static void
685	stack_put (coro_stack *stack)	672	cctx_put (coro_cctx *cctx)
686	{	673	{
687	stack->next = stack_first;	674	/* free another cctx if overlimit */
688	stack_first = stack;	675	if (cctx_idle >= MAX_IDLE_CCTX)
		676	{
		677	coro_cctx *first = cctx_first;
		678	cctx_first = first->next;
		679	--cctx_idle;
		680
		681	assert (!first->inuse);
		682	cctx_destroy (first);
		683	}
		684
		685	++cctx_idle;
		686	cctx->next = cctx_first;
		687	cctx_first = cctx;
689	}	688	}
690		689
691	/* never call directly, always through the coro_state_transfer global variable */	690	/* never call directly, always through the coro_state_transfer global variable */
692	static void	691	static void NOINLINE
693	transfer_impl (pTHX_ struct coro prev, struct coro next, int flags)	692	transfer (struct coro prev, struct coro next)
694	{	693	{
695	dSTACKLEVEL;	694	dSTACKLEVEL;
696		695
697	/* sometimes transfer is only called to set idle_sp */	696	/* sometimes transfer is only called to set idle_sp */
698	if (flags == TRANSFER_SET_STACKLEVEL)	697	if (!next)
699	((coro_stack *)prev)->idle_sp = STACKLEVEL;	698	((coro_cctx *)prev)->idle_sp = STACKLEVEL;
700	else if (prev != next)	699	else if (prev != next)
701	{	700	{
702	coro_stack *prev__stack;	701	coro_cctx *prev__cctx;
		702
		703	if (prev->flags & CF_NEW)
		704	{
		705	/* create a new empty context */
		706	Newz (0, prev->cctx, 1, coro_cctx);
		707	prev->cctx->inuse = 1;
		708	prev->flags &= ~CF_NEW;
		709	prev->flags \|= CF_RUNNING;
		710	}
		711
		712	/TODO: must not croak here /
		713	if (!prev->flags & CF_RUNNING)
		714	croak ("Coro::State::transfer called with non-running prev Coro::State, but can only transfer from running states");
		715
		716	if (next->flags & CF_RUNNING)
		717	croak ("Coro::State::transfer called with running next Coro::State, but can only transfer to inactive states");
		718
		719	prev->flags &= ~CF_RUNNING;
		720	next->flags \|= CF_RUNNING;
703		721
704	LOCK;	722	LOCK;
705		723
706	if (next->mainstack)	724	if (next->flags & CF_NEW)
707	{	725	{
708	/* coroutine already started */	726	/* need to start coroutine */
709	SAVE (prev, flags);	727	next->flags &= ~CF_NEW;
710	LOAD (next);	728	/* first get rid of the old state */
		729	save_perl (prev);
		730	/* setup coroutine call */
		731	setup_coro (next);
		732	/* need a new stack */
		733	assert (!next->stack);
711	}	734	}
712	else	735	else
713	{	736	{
714	/* need to start coroutine */	737	/* coroutine already started */
715	/* first get rid of the old state */	738	save_perl (prev);
716	SAVE (prev, -1);	739	load_perl (next);
717	/* setup coroutine call */
718	setup_coro (next);
719	/* need a stack */
720	next->stack = 0;
721	}	740	}
722		741
723	if (!prev->stack)
724	/* create a new empty context */
725	Newz (0, prev->stack, 1, coro_stack);
726
727	prev__stack = prev->stack;	742	prev__cctx = prev->cctx;
728		743
729	/* possibly "free" the stack */	744	/* possibly "free" the cctx */
730	if (prev__stack->idle_sp == STACKLEVEL)	745	if (prev__cctx->idle_sp == STACKLEVEL)
731	{	746	{
732	stack_put (prev__stack);	747	/* I assume that STACKLEVEL is a stronger indicator than PL_top_env changes */
		748	assert (PL_top_env == prev__cctx->top_env);
		749
733	prev->stack = 0;	750	prev->cctx = 0;
		751
		752	cctx_put (prev__cctx);
		753	prev__cctx->inuse = 0;
734	}	754	}
735		755
736	if (!next->stack)	756	if (!next->cctx)
737	next->stack = stack_get ();
738
739	if (prev__stack != next->stack)
740	{	757	{
		758	next->cctx = cctx_get ();
		759	assert (!next->cctx->inuse);
		760	next->cctx->inuse = 1;
		761	}
		762
		763	if (prev__cctx != next->cctx)
		764	{
741	prev__stack->top_env = PL_top_env;	765	prev__cctx->top_env = PL_top_env;
742	PL_top_env = next->stack->top_env;	766	PL_top_env = next->cctx->top_env;
743	coro_transfer (&prev__stack->cctx, &next->stack->cctx);	767	coro_transfer (&prev__cctx->cctx, &next->cctx->cctx);
744	}	768	}
745		769
746	free_coro_mortal ();	770	free_coro_mortal ();
747		771
748	UNLOCK;	772	UNLOCK;
749	}	773	}
750	}	774	}
751		775
752	/* use this function pointer to call the above function */
753	/* this is done to increase chances of the compiler not inlining the call */
754	/* not static to make it even harder for the compiler (and theoretically impossible in most cases */
755	void (coro_state_transfer)(pTHX_ struct coro prev, struct coro *next, int flags) = transfer_impl;
756
757	struct transfer_args	776	struct transfer_args
758	{	777	{
759	struct coro prev, next;	778	struct coro prev, next;
760	int flags;
761	};	779	};
762		780
763	#define TRANSFER(ta) coro_state_transfer ((ta).prev, (ta).next, (ta).flags)	781	#define TRANSFER(ta) transfer ((ta).prev, (ta).next)
764		782
765	static void	783	static void
766	coro_state_destroy (struct coro *coro)	784	coro_state_destroy (struct coro *coro)
767	{	785	{
768	if (coro->refcnt--)	786	if (coro->refcnt--)
769	return;	787	return;
770		788
771	if (coro->mainstack && coro->mainstack != main_mainstack)	789	if (coro->mainstack && coro->mainstack != main_mainstack)
772	{	790	{
773	struct coro temp;	791	struct coro temp;
		792	Zero (&temp, 1, struct coro);
		793	temp.save = CORO_SAVE_ALL;
774		794
775	SAVE (aTHX_ (&temp), TRANSFER_SAVE_ALL);	795	if (coro->flags & CF_RUNNING)
776	LOAD (aTHX_ coro);	796	croak ("FATAL: tried to destroy currently running coroutine");
777		797
		798	save_perl (&temp);
		799	load_perl (coro);
		800
778	destroy_stacks (aTHX);	801	coro_destroy_stacks ();
779		802
780	LOAD ((&temp)); /* this will get rid of defsv etc.. */	803	load_perl (&temp); /* this will get rid of defsv etc.. */
781		804
782	coro->mainstack = 0;	805	coro->mainstack = 0;
783	}	806	}
784		807
785	stack_free (coro->stack);	808	cctx_destroy (coro->cctx);
786	SvREFCNT_dec (coro->args);	809	SvREFCNT_dec (coro->args);
787	Safefree (coro);	810	Safefree (coro);
788	}	811	}
789		812
790	static int	813	static int
791	coro_state_clear (SV sv, MAGIC mg)	814	coro_state_clear (pTHX_ SV sv, MAGIC mg)
792	{	815	{
793	struct coro coro = (struct coro )mg->mg_ptr;	816	struct coro coro = (struct coro )mg->mg_ptr;
794	mg->mg_ptr = 0;	817	mg->mg_ptr = 0;
795		818
796	coro_state_destroy (coro);	819	coro_state_destroy (coro);
797		820
798	return 0;	821	return 0;
799	}	822	}
800		823
801	static int	824	static int
802	coro_state_dup (MAGIC mg, CLONE_PARAMS params)	825	coro_state_dup (pTHX_ MAGIC mg, CLONE_PARAMS params)
803	{	826	{
804	struct coro coro = (struct coro )mg->mg_ptr;	827	struct coro coro = (struct coro )mg->mg_ptr;
805		828
806	++coro->refcnt;	829	++coro->refcnt;
807		830
808	return 0;	831	return 0;
809	}	832	}
810		833
811	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	};
812		844
813	static struct coro *	845	static struct coro *
814	SvSTATE (SV *coro)	846	SvSTATE (SV *coro)
815	{	847	{
816	HV *stash;	848	HV *stash;
…		…
831	assert (mg->mg_type == PERL_MAGIC_ext);	863	assert (mg->mg_type == PERL_MAGIC_ext);
832	return (struct coro *)mg->mg_ptr;	864	return (struct coro *)mg->mg_ptr;
833	}	865	}
834		866
835	static void	867	static void
836	prepare_transfer (pTHX_ struct transfer_args ta, SV prev, SV *next, int flags)	868	prepare_transfer (struct transfer_args ta, SV prev_sv, SV *next_sv)
837	{	869	{
838	ta->prev = SvSTATE (prev);	870	ta->prev = SvSTATE (prev_sv);
839	ta->next = SvSTATE (next);	871	ta->next = SvSTATE (next_sv);
840	ta->flags = flags;
841	}	872	}
842		873
843	static void	874	static void
844	api_transfer (SV prev, SV next, int flags)	875	api_transfer (SV prev_sv, SV next_sv)
845	{	876	{
846	dTHX;
847	struct transfer_args ta;	877	struct transfer_args ta;
848		878
849	prepare_transfer (aTHX_ &ta, prev, next, flags);	879	prepare_transfer (&ta, prev_sv, next_sv);
850	TRANSFER (ta);	880	TRANSFER (ta);
		881	}
		882
		883	static int
		884	api_save (SV *coro_sv, int new_save)
		885	{
		886	struct coro *coro = SvSTATE (coro_sv);
		887	int old_save = coro->save;
		888
		889	if (new_save >= 0)
		890	coro->save = new_save;
		891
		892	return old_save;
851	}	893	}
852		894
853	/ Coro ******************************************************************/	895	/ Coro ******************************************************************/
854		896
855	#define PRIO_MAX 3	897	#define PRIO_MAX 3
…		…
858	#define PRIO_LOW -1	900	#define PRIO_LOW -1
859	#define PRIO_IDLE -3	901	#define PRIO_IDLE -3
860	#define PRIO_MIN -4	902	#define PRIO_MIN -4
861		903
862	/* for Coro.pm */	904	/* for Coro.pm */
863	static GV coro_current, coro_idle;	905	static SV *coro_current;
864	static AV *coro_ready [PRIO_MAX-PRIO_MIN+1];	906	static AV *coro_ready [PRIO_MAX-PRIO_MIN+1];
865	static int coro_nready;	907	static int coro_nready;
866		908
867	static void	909	static void
868	coro_enq (pTHX_ SV *sv)	910	coro_enq (SV *coro_sv)
869	{	911	{
870	int prio;
871
872	if (SvTYPE (sv) != SVt_PVHV)
873	croak ("Coro::ready tried to enqueue something that is not a coroutine");
874
875	prio = SvSTATE (sv)->prio;
876
877	av_push (coro_ready [prio - PRIO_MIN], sv);	912	av_push (coro_ready [SvSTATE (coro_sv)->prio - PRIO_MIN], coro_sv);
878	coro_nready++;	913	coro_nready++;
879	}	914	}
880		915
881	static SV *	916	static SV *
882	coro_deq (pTHX_ int min_prio)	917	coro_deq (int min_prio)
883	{	918	{
884	int prio = PRIO_MAX - PRIO_MIN;	919	int prio = PRIO_MAX - PRIO_MIN;
885		920
886	min_prio -= PRIO_MIN;	921	min_prio -= PRIO_MIN;
887	if (min_prio < 0)	922	if (min_prio < 0)
…		…
895	}	930	}
896		931
897	return 0;	932	return 0;
898	}	933	}
899		934
900	static void	935	static int
901	api_ready (SV *coro)	936	api_ready (SV *coro_sv)
902	{	937	{
903	dTHX;	938	struct coro *coro;
904		939
905	if (SvROK (coro))	940	if (SvROK (coro_sv))
906	coro = SvRV (coro);	941	coro_sv = SvRV (coro_sv);
		942
		943	coro = SvSTATE (coro_sv);
		944
		945	if (coro->flags & CF_READY)
		946	return 0;
		947
		948	#if 0 /* this is actually harmless */
		949	if (coro->flags & CF_RUNNING)
		950	croak ("Coro::ready called on currently running coroutine");
		951	#endif
		952
		953	coro->flags \|= CF_READY;
907		954
908	LOCK;	955	LOCK;
909	coro_enq (aTHX_ SvREFCNT_inc (coro));	956	coro_enq (SvREFCNT_inc (coro_sv));
910	UNLOCK;	957	UNLOCK;
911	}
912		958
		959	return 1;
		960	}
		961
913	static void	962	static int
		963	api_is_ready (SV *coro_sv)
		964	{
		965	return !!SvSTATE (coro_sv)->flags & CF_READY;
		966	}
		967
		968	static void
914	prepare_schedule (aTHX_ struct transfer_args *ta)	969	prepare_schedule (struct transfer_args *ta)
915	{	970	{
916	SV current, prev, *next;	971	SV prev, next;
917
918	LOCK;
919
920	current = GvSV (coro_current);
921		972
922	for (;;)	973	for (;;)
923	{	974	{
924	LOCK;	975	LOCK;
925
926	next = coro_deq (aTHX_ PRIO_MIN);	976	next = coro_deq (PRIO_MIN);
		977	UNLOCK;
927		978
928	if (next)	979	if (next)
929	break;	980	break;
930		981
931	UNLOCK;
932
933	{	982	{
934	dSP;	983	dSP;
935		984
936	ENTER;	985	ENTER;
937	SAVETMPS;	986	SAVETMPS;
938		987
939	PUSHMARK (SP);	988	PUSHMARK (SP);
940	PUTBACK;	989	PUTBACK;
941	call_sv (GvSV (coro_idle), G_DISCARD);	990	call_sv (get_sv ("Coro::idle", FALSE), G_DISCARD);
942		991
943	FREETMPS;	992	FREETMPS;
944	LEAVE;	993	LEAVE;
945	}	994	}
946	}	995	}
947		996
948	prev = SvRV (current);	997	prev = SvRV (coro_current);
949	SvRV (current) = next;	998	SvRV_set (coro_current, next);
950		999
951	/* free this only after the transfer */	1000	/* free this only after the transfer */
		1001	LOCK;
952	free_coro_mortal ();	1002	free_coro_mortal ();
		1003	UNLOCK;
953	coro_mortal = prev;	1004	coro_mortal = prev;
954		1005
		1006	assert (!SvROK(prev));//D
		1007	assert (!SvROK(next));//D
		1008
955	ta->prev = SvSTATE (prev);	1009	ta->prev = SvSTATE (prev);
956	ta->next = SvSTATE (next);	1010	ta->next = SvSTATE (next);
957	ta->flags = TRANSFER_SAVE_ALL;
958		1011
959	UNLOCK;	1012	assert (ta->next->flags & CF_READY);
		1013	ta->next->flags &= ~CF_READY;
960	}	1014	}
961		1015
962	static void	1016	static void
963	prepare_cede (aTHX_ struct transfer_args *ta)	1017	prepare_cede (struct transfer_args *ta)
964	{	1018	{
965	LOCK;	1019	api_ready (coro_current);
966	coro_enq (aTHX_ SvREFCNT_inc (SvRV (GvSV (coro_current))));
967	UNLOCK;
968		1020
969	prepare_schedule (ta);	1021	prepare_schedule (ta);
970	}	1022	}
971		1023
972	static void	1024	static void
973	api_schedule (void)	1025	api_schedule (void)
974	{	1026	{
975	dTHX;
976	struct transfer_args ta;	1027	struct transfer_args ta;
977		1028
978	prepare_schedule (&ta);	1029	prepare_schedule (&ta);
979	TRANSFER (ta);	1030	TRANSFER (ta);
980	}	1031	}
981		1032
982	static void	1033	static void
983	api_cede (void)	1034	api_cede (void)
984	{	1035	{
985	dTHX;
986	struct transfer_args ta;	1036	struct transfer_args ta;
987		1037
988	prepare_cede (&ta);	1038	prepare_cede (&ta);
989	TRANSFER (ta);	1039	TRANSFER (ta);
990	}	1040	}
…		…
1000	#endif	1050	#endif
1001	BOOT_PAGESIZE;	1051	BOOT_PAGESIZE;
1002		1052
1003	coro_state_stash = gv_stashpv ("Coro::State", TRUE);	1053	coro_state_stash = gv_stashpv ("Coro::State", TRUE);
1004		1054
1005	newCONSTSUB (coro_state_stash, "SAVE_DEFAV", newSViv (TRANSFER_SAVE_DEFAV));	1055	newCONSTSUB (coro_state_stash, "SAVE_DEFAV", newSViv (CORO_SAVE_DEFAV));
1006	newCONSTSUB (coro_state_stash, "SAVE_DEFSV", newSViv (TRANSFER_SAVE_DEFSV));	1056	newCONSTSUB (coro_state_stash, "SAVE_DEFSV", newSViv (CORO_SAVE_DEFSV));
1007	newCONSTSUB (coro_state_stash, "SAVE_ERRSV", newSViv (TRANSFER_SAVE_ERRSV));	1057	newCONSTSUB (coro_state_stash, "SAVE_ERRSV", newSViv (CORO_SAVE_ERRSV));
		1058	newCONSTSUB (coro_state_stash, "SAVE_IRSSV", newSViv (CORO_SAVE_IRSSV));
		1059	newCONSTSUB (coro_state_stash, "SAVE_ALL", newSViv (CORO_SAVE_ALL));
1008		1060
1009	main_mainstack = PL_mainstack;	1061	main_mainstack = PL_mainstack;
1010		1062
1011	coroapi.ver = CORO_API_VERSION;	1063	coroapi.ver = CORO_API_VERSION;
1012	coroapi.transfer = api_transfer;	1064	coroapi.transfer = api_transfer;
…		…
1022	HV *hv;	1074	HV *hv;
1023	int i;	1075	int i;
1024		1076
1025	Newz (0, coro, 1, struct coro);	1077	Newz (0, coro, 1, struct coro);
1026	coro->args = newAV ();	1078	coro->args = newAV ();
		1079	coro->save = CORO_SAVE_ALL;
		1080	coro->flags = CF_NEW;
1027		1081
1028	hv = newHV ();	1082	hv = newHV ();
1029	sv_magicext ((SV )hv, 0, PERL_MAGIC_ext, &coro_state_vtbl, (char )coro, 0)->mg_flags \|= MGf_DUP;	1083	sv_magicext ((SV )hv, 0, PERL_MAGIC_ext, &coro_state_vtbl, (char )coro, 0)->mg_flags \|= MGf_DUP;
1030	RETVAL = sv_bless (newRV_noinc ((SV *)hv), gv_stashpv (klass, 1));	1084	RETVAL = sv_bless (newRV_noinc ((SV *)hv), gv_stashpv (klass, 1));
1031		1085
1032	for (i = 1; i < items; i++)	1086	for (i = 1; i < items; i++)
1033	av_push (coro->args, newSVsv (ST (i)));	1087	av_push (coro->args, newSVsv (ST (i)));
1034
1035	/coro->mainstack = 0; //actual work is done inside transfer /
1036	/coro->stack = 0;/
1037	}	1088	}
1038	OUTPUT:	1089	OUTPUT:
		1090	RETVAL
		1091
		1092	int
		1093	save (SV *coro, int new_save = -1)
		1094	CODE:
		1095	RETVAL = api_save (coro, new_save);
		1096	OUTPUT:
1039	RETVAL	1097	RETVAL
1040		1098
1041	void	1099	void
1042	_set_stacklevel (...)	1100	_set_stacklevel (...)
1043	ALIAS:	1101	ALIAS:
1044	Coro::State::transfer = 1	1102	Coro::State::transfer = 1
1045	Coro::schedule = 2	1103	Coro::schedule = 2
1046	Coro::cede = 3	1104	Coro::cede = 3
1047	Coro::Cont::yield = 4
1048	CODE:	1105	CODE:
1049	{	1106	{
1050	struct transfer_args ta;	1107	struct transfer_args ta;
1051		1108
1052	switch (ix)	1109	switch (ix)
1053	{	1110	{
1054	case 0:	1111	case 0:
1055	ta.prev = (struct coro )INT2PTR (coro_stack , SvIV (ST (0)));	1112	ta.prev = (struct coro )INT2PTR (coro_cctx , SvIV (ST (0)));
1056	ta.next = 0;	1113	ta.next = 0;
1057	ta.flags = TRANSFER_SET_STACKLEVEL;
1058	break;	1114	break;
1059		1115
1060	case 1:	1116	case 1:
1061	if (items != 3)	1117	if (items != 2)
1062	croak ("Coro::State::transfer(prev,next,flags) expects three arguments, not %d", items);	1118	croak ("Coro::State::transfer (prev,next) expects two arguments, not %d", items);
1063		1119
1064	prepare_transfer (&ta, ST (0), ST (1), SvIV (ST (2)));	1120	prepare_transfer (&ta, ST (0), ST (1));
1065	break;	1121	break;
1066		1122
1067	case 2:	1123	case 2:
1068	prepare_schedule (&ta);	1124	prepare_schedule (&ta);
1069	break;	1125	break;
1070		1126
1071	case 3:	1127	case 3:
1072	prepare_cede (&ta);	1128	prepare_cede (&ta);
1073	break;	1129	break;
1074
1075	case 4:
1076	{
1077	SV *yieldstack;
1078	SV *sv;
1079	AV *defav = GvAV (PL_defgv);
1080
1081	yieldstack = *hv_fetch (
1082	(HV *)SvRV (GvSV (coro_current)),
1083	"yieldstack", sizeof ("yieldstack") - 1,
1084	0
1085	);
1086
1087	/* set up @_ -- ugly */
1088	av_clear (defav);
1089	av_fill (defav, items - 1);
1090	while (items--)
1091	av_store (defav, items, SvREFCNT_inc (ST(items)));
1092
1093	sv = av_pop ((AV *)SvRV (yieldstack));
1094	ta.prev = SvSTATE (av_fetch ((AV )SvRV (sv), 0, 0));
1095	ta.next = SvSTATE (av_fetch ((AV )SvRV (sv), 1, 0));
1096	ta.flags = 0;
1097	SvREFCNT_dec (sv);
1098	}
1099	break;
1100
1101	}	1130	}
1102		1131
1103	TRANSFER (ta);	1132	TRANSFER (ta);
1104	}	1133	}
1105		1134
…		…
1112	sv_unmagic (SvRV (dst), PERL_MAGIC_ext);	1141	sv_unmagic (SvRV (dst), PERL_MAGIC_ext);
1113		1142
1114	++coro_src->refcnt;	1143	++coro_src->refcnt;
1115	sv_magicext (SvRV (dst), 0, PERL_MAGIC_ext, &coro_state_vtbl, (char *)coro_src, 0)->mg_flags \|= MGf_DUP;	1144	sv_magicext (SvRV (dst), 0, PERL_MAGIC_ext, &coro_state_vtbl, (char *)coro_src, 0)->mg_flags \|= MGf_DUP;
1116	}	1145	}
1117
1118	void
1119	_nonlocal_goto (IV nextop)
1120	CODE:
1121	/* uuh, somebody will kill me again for this */
1122	PL_op->op_next = INT2PTR (OP *, nextop);
1123		1146
1124	void	1147	void
1125	_exit (code)	1148	_exit (code)
1126	int code	1149	int code
1127	PROTOTYPE: $	1150	PROTOTYPE: $
1128	CODE:	1151	CODE:
1129	_exit (code);	1152	_exit (code);
1130		1153
		1154	int
		1155	cctx_count ()
		1156	CODE:
		1157	RETVAL = cctx_count;
		1158	OUTPUT:
		1159	RETVAL
		1160
		1161	int
		1162	cctx_idle ()
		1163	CODE:
		1164	RETVAL = cctx_idle;
		1165	OUTPUT:
		1166	RETVAL
		1167
1131	MODULE = Coro::State PACKAGE = Coro	1168	MODULE = Coro::State PACKAGE = Coro
1132		1169
1133	BOOT:	1170	BOOT:
1134	{	1171	{
1135	int i;	1172	int i;
…		…
1141	newCONSTSUB (coro_stash, "PRIO_NORMAL", newSViv (PRIO_NORMAL));	1178	newCONSTSUB (coro_stash, "PRIO_NORMAL", newSViv (PRIO_NORMAL));
1142	newCONSTSUB (coro_stash, "PRIO_LOW", newSViv (PRIO_LOW));	1179	newCONSTSUB (coro_stash, "PRIO_LOW", newSViv (PRIO_LOW));
1143	newCONSTSUB (coro_stash, "PRIO_IDLE", newSViv (PRIO_IDLE));	1180	newCONSTSUB (coro_stash, "PRIO_IDLE", newSViv (PRIO_IDLE));
1144	newCONSTSUB (coro_stash, "PRIO_MIN", newSViv (PRIO_MIN));	1181	newCONSTSUB (coro_stash, "PRIO_MIN", newSViv (PRIO_MIN));
1145		1182
1146	coro_current = gv_fetchpv ("Coro::current", TRUE, SVt_PV);	1183	coro_current = get_sv ("Coro::current", FALSE);
1147	coro_idle = gv_fetchpv ("Coro::idle" , TRUE, SVt_PV);	1184	SvREADONLY_on (coro_current);
1148		1185
1149	for (i = PRIO_MAX - PRIO_MIN + 1; i--; )	1186	for (i = PRIO_MAX - PRIO_MIN + 1; i--; )
1150	coro_ready[i] = newAV ();	1187	coro_ready[i] = newAV ();
1151		1188
1152	{	1189	{
1153	SV *sv = perl_get_sv("Coro::API", 1);	1190	SV *sv = perl_get_sv("Coro::API", 1);
1154		1191
1155	coroapi.schedule = api_schedule;	1192	coroapi.schedule = api_schedule;
		1193	coroapi.save = api_save;
1156	coroapi.cede = api_cede;	1194	coroapi.cede = api_cede;
1157	coroapi.ready = api_ready;	1195	coroapi.ready = api_ready;
		1196	coroapi.is_ready = api_is_ready;
1158	coroapi.nready = &coro_nready;	1197	coroapi.nready = &coro_nready;
1159	coroapi.current = coro_current;	1198	coroapi.current = coro_current;
1160		1199
1161	GCoroAPI = &coroapi;	1200	GCoroAPI = &coroapi;
1162	sv_setiv (sv, (IV)&coroapi);	1201	sv_setiv (sv, (IV)&coroapi);
1163	SvREADONLY_on (sv);	1202	SvREADONLY_on (sv);
1164	}	1203	}
1165	}	1204	}
		1205
		1206	void
		1207	_set_current (SV *current)
		1208	PROTOTYPE: $
		1209	CODE:
		1210	SvREFCNT_dec (SvRV (coro_current));
		1211	SvRV_set (coro_current, SvREFCNT_inc (SvRV (current)));
1166		1212
1167	int	1213	int
1168	prio (Coro::State coro, int newprio = 0)	1214	prio (Coro::State coro, int newprio = 0)
1169	ALIAS:	1215	ALIAS:
1170	nice = 1	1216	nice = 1
…		…
1182		1228
1183	coro->prio = newprio;	1229	coro->prio = newprio;
1184	}	1230	}
1185	}	1231	}
1186		1232
1187	void	1233	SV *
1188	ready (SV *self)	1234	ready (SV *self)
1189	PROTOTYPE: $	1235	PROTOTYPE: $
1190	CODE:	1236	CODE:
1191	api_ready (self);	1237	RETVAL = boolSV (api_ready (self));
		1238	OUTPUT:
		1239	RETVAL
		1240
		1241	SV *
		1242	is_ready (SV *self)
		1243	PROTOTYPE: $
		1244	CODE:
		1245	RETVAL = boolSV (api_is_ready (self));
		1246	OUTPUT:
		1247	RETVAL
1192		1248
1193	int	1249	int
1194	nready (...)	1250	nready (...)
1195	PROTOTYPE:	1251	PROTOTYPE:
1196	CODE:	1252	CODE:
…		…
1202		1258
1203	SV *	1259	SV *
1204	_get_state ()	1260	_get_state ()
1205	CODE:	1261	CODE:
1206	{	1262	{
1207	struct {	1263	struct io_state *data;
1208	int errorno;
1209	int laststype;
1210	int laststatval;
1211	Stat_t statcache;
1212	} data;
1213		1264
		1265	RETVAL = newSV (sizeof (struct io_state));
		1266	data = (struct io_state *)SvPVX (RETVAL);
		1267	SvCUR_set (RETVAL, sizeof (struct io_state));
		1268	SvPOK_only (RETVAL);
		1269
1214	data.errorno = errno;	1270	data->errorno = errno;
1215	data.laststype = PL_laststype;	1271	data->laststype = PL_laststype;
1216	data.laststatval = PL_laststatval;	1272	data->laststatval = PL_laststatval;
1217	data.statcache = PL_statcache;	1273	data->statcache = PL_statcache;
1218
1219	RETVAL = newSVpvn ((char *)&data, sizeof data);
1220	}	1274	}
1221	OUTPUT:	1275	OUTPUT:
1222	RETVAL	1276	RETVAL
1223		1277
1224	void	1278	void
1225	_set_state (char *data_)	1279	_set_state (char *data_)
1226	PROTOTYPE: $	1280	PROTOTYPE: $
1227	CODE:	1281	CODE:
1228	{	1282	{
1229	struct {	1283	struct io_state data = (void )data_;
1230	int errorno;
1231	int laststype;
1232	int laststatval;
1233	Stat_t statcache;
1234	} data = (void )data_;
1235		1284
1236	errno = data->errorno;	1285	errno = data->errorno;
1237	PL_laststype = data->laststype;	1286	PL_laststype = data->laststype;
1238	PL_laststatval = data->laststatval;	1287	PL_laststatval = data->laststatval;
1239	PL_statcache = data->statcache;	1288	PL_statcache = data->statcache;
1240	}	1289	}
		1290

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Comparing Coro/Coro/State.xs (file contents): Revision 1.97 by root, Sun Nov 26 21:21:14 2006 UTC vs. Revision 1.122 by root, Mon Dec 4 13:47:56 2006 UTC

Diff Legend

Comparing Coro/Coro/State.xs (file contents):
Revision 1.97 by root, Sun Nov 26 21:21:14 2006 UTC vs.
Revision 1.122 by root, Mon Dec 4 13:47:56 2006 UTC