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

Comparing Coro/Coro/State.xs (file contents):
Revision 1.106 by root, Mon Nov 27 02:08:55 2006 UTC vs.
Revision 1.131 by root, Fri Dec 29 11:37:49 2006 UTC

…		…
4	#include "perl.h"	4	#include "perl.h"
5	#include "XSUB.h"	5	#include "XSUB.h"
6		6
7	#include "patchlevel.h"	7	#include "patchlevel.h"
8		8
9	#if USE_VALGRIND
10	# include <valgrind/valgrind.h>
11	#endif
12
13	#define PERL_VERSION_ATLEAST(a,b,c) \
14	(PERL_REVISION > (a) \
15	\|\| (PERL_REVISION == (a) \
16	&& (PERL_VERSION > (b) \
17	\|\| (PERL_VERSION == (b) && PERLSUBVERSION >= (c)))))
18
19	#if !PERL_VERSION_ATLEAST (5,6,0)
20	# ifndef PL_ppaddr
21	# define PL_ppaddr ppaddr
22	# endif
23	# ifndef call_sv
24	# define call_sv perl_call_sv
25	# endif
26	# ifndef get_sv
27	# define get_sv perl_get_sv
28	# endif
29	# ifndef get_cv
30	# define get_cv perl_get_cv
31	# endif
32	# ifndef IS_PADGV
33	# define IS_PADGV(v) 0
34	# endif
35	# ifndef IS_PADCONST
36	# define IS_PADCONST(v) 0
37	# endif
38	#endif
39
40	#include <stdio.h>	9	#include <stdio.h>
41	#include <errno.h>	10	#include <errno.h>
42		11	#include <assert.h>
43	#if !__i386 && !__x86_64 && !__powerpc && !__m68k && !__alpha && !__mips && !__sparc64
44	# undef STACKGUARD
45	#endif
46
47	#ifndef STACKGUARD
48	# define STACKGUARD 0
49	#endif
50		12
51	#ifdef HAVE_MMAP	13	#ifdef HAVE_MMAP
52	# include <unistd.h>	14	# include <unistd.h>
53	# include <sys/mman.h>	15	# include <sys/mman.h>
54	# ifndef MAP_ANONYMOUS	16	# ifndef MAP_ANONYMOUS
…		…
69	#else	31	#else
70	# define PAGESIZE 0	32	# define PAGESIZE 0
71	# define BOOT_PAGESIZE (void)0	33	# define BOOT_PAGESIZE (void)0
72	#endif	34	#endif
73		35
		36	#if USE_VALGRIND
		37	# include <valgrind/valgrind.h>
		38	#endif
		39
		40	/* the maximum number of idle cctx that will be pooled */
		41	#define MAX_IDLE_CCTX 8
		42
		43	#define PERL_VERSION_ATLEAST(a,b,c) \
		44	(PERL_REVISION > (a) \
		45	\|\| (PERL_REVISION == (a) \
		46	&& (PERL_VERSION > (b) \
		47	\|\| (PERL_VERSION == (b) && PERLSUBVERSION >= (c)))))
		48
		49	#if !PERL_VERSION_ATLEAST (5,6,0)
		50	# ifndef PL_ppaddr
		51	# define PL_ppaddr ppaddr
		52	# endif
		53	# ifndef call_sv
		54	# define call_sv perl_call_sv
		55	# endif
		56	# ifndef get_sv
		57	# define get_sv perl_get_sv
		58	# endif
		59	# ifndef get_cv
		60	# define get_cv perl_get_cv
		61	# endif
		62	# ifndef IS_PADGV
		63	# define IS_PADGV(v) 0
		64	# endif
		65	# ifndef IS_PADCONST
		66	# define IS_PADCONST(v) 0
		67	# endif
		68	#endif
		69
		70	/* 5.8.7 */
		71	#ifndef SvRV_set
		72	# define SvRV_set(s,v) SvRV(s) = (v)
		73	#endif
		74
		75	#if !__i386 && !__x86_64 && !__powerpc && !__m68k && !__alpha && !__mips && !__sparc64
		76	# undef STACKGUARD
		77	#endif
		78
		79	#ifndef STACKGUARD
		80	# define STACKGUARD 0
		81	#endif
		82
		83	/* prefer perl internal functions over our own? */
		84	#ifndef PREFER_PERL_FUNCTIONS
		85	# define PREFER_PERL_FUNCTIONS 0
		86	#endif
		87
74	/* The next macro should declare a variable stacklevel that contains and approximation	88	/* The next macro should declare a variable stacklevel that contains and approximation
75	* to the current C stack pointer. Its property is that it changes with each call	89	* to the current C stack pointer. Its property is that it changes with each call
76	* and should be unique. */	90	* and should be unique. */
77	#define dSTACKLEVEL int stacklevel	91	#define dSTACKLEVEL int stacklevel
78	#define STACKLEVEL ((void *)&stacklevel)	92	#define STACKLEVEL ((void *)&stacklevel)
79		93
80	#define IN_DESTRUCT (PL_main_cv == Nullcv)	94	#define IN_DESTRUCT (PL_main_cv == Nullcv)
81		95
82	#if __GNUC__ >= 3	96	#if __GNUC__ >= 3
83	# define attribute(x) __attribute__(x)	97	# define attribute(x) __attribute__(x)
		98	# define BARRIER __asm__ __volatile__ ("" : : : "memory")
84	#else	99	#else
85	# define attribute(x)	100	# define attribute(x)
		101	# define BARRIER
86	#endif	102	#endif
87		103
88	#define NOINLINE attribute ((noinline))	104	#define NOINLINE attribute ((noinline))
89		105
90	#include "CoroAPI.h"	106	#include "CoroAPI.h"
91
92	#define TRANSFER_SET_STACKLEVEL 0x8bfbfbfb /* magic cookie */
93		107
94	#ifdef USE_ITHREADS	108	#ifdef USE_ITHREADS
95	static perl_mutex coro_mutex;	109	static perl_mutex coro_mutex;
96	# define LOCK do { MUTEX_LOCK (&coro_mutex); } while (0)	110	# define LOCK do { MUTEX_LOCK (&coro_mutex); } while (0)
97	# define UNLOCK do { MUTEX_UNLOCK (&coro_mutex); } while (0)	111	# define UNLOCK do { MUTEX_UNLOCK (&coro_mutex); } while (0)
98	#else	112	#else
99	# define LOCK (void)0	113	# define LOCK (void)0
100	# define UNLOCK (void)0	114	# define UNLOCK (void)0
101	#endif	115	#endif
102		116
		117	struct io_state
		118	{
		119	int errorno;
		120	I32 laststype;
		121	int laststatval;
		122	Stat_t statcache;
		123	};
		124
103	static struct CoroAPI coroapi;	125	static struct CoroAPI coroapi;
104	static AV main_mainstack; / used to differentiate between $main and others */	126	static AV main_mainstack; / used to differentiate between $main and others */
105	static HV coro_state_stash, coro_stash;	127	static HV coro_state_stash, coro_stash;
106	static SV coro_mortal; / will be freed after next transfer */	128	static SV coro_mortal; / will be freed after next transfer */
107		129
		130	static struct coro_cctx *cctx_first;
		131	static int cctx_count, cctx_idle;
		132
108	/* this is a structure representing a c-level coroutine */	133	/* this is a structure representing a c-level coroutine */
109	typedef struct coro_cctx {	134	typedef struct coro_cctx {
110	struct coro_cctx *next;	135	struct coro_cctx *next;
111		136
112	/* the stack */	137	/* the stack */
…		…
116	/* cpu state */	141	/* cpu state */
117	void idle_sp; / sp of top-level transfer/schedule/cede call */	142	void idle_sp; / sp of top-level transfer/schedule/cede call */
118	JMPENV *top_env;	143	JMPENV *top_env;
119	coro_context cctx;	144	coro_context cctx;
120		145
		146	int inuse;
		147
121	#if USE_VALGRIND	148	#if USE_VALGRIND
122	int valgrind_id;	149	int valgrind_id;
123	#endif	150	#endif
124	} coro_cctx;	151	} coro_cctx;
		152
		153	enum {
		154	CF_RUNNING = 0x0001, /* coroutine is running */
		155	CF_READY = 0x0002, /* coroutine is ready */
		156	CF_NEW = 0x0004, /* ahs never been switched to */
		157	};
125		158
126	/* this is a structure representing a perl-level coroutine */	159	/* this is a structure representing a perl-level coroutine */
127	struct coro {	160	struct coro {
128	/* the c coroutine allocated to this perl coroutine, if any */	161	/* the c coroutine allocated to this perl coroutine, if any */
129	coro_cctx *cctx;	162	coro_cctx *cctx;
130		163
131	/* data associated with this coroutine (initial args) */	164	/* data associated with this coroutine (initial args) */
132	AV *args;	165	AV *args;
133	int refcnt;	166	int refcnt;
		167	int save; /* CORO_SAVE flags */
		168	int flags; /* CF_ flags */
134		169
135	/* optionally saved, might be zero */	170	/* optionally saved, might be zero */
136	AV *defav;	171	AV defav; / @_ */
137	SV *defsv;	172	SV defsv; / $_ */
138	SV *errsv;	173	SV errsv; / $@ */
		174	SV irssv; / $/ */
		175	SV irssv_sv; / real $/ cache */
139		176
140	/* saved global state not related to stacks */	177	#define VAR(name,type) type name;
141	U8 dowarn;	178	# include "state.h"
142	I32 in_eval;	179	#undef VAR
143
144	/* the stacks and related info (callchain etc..) */
145	PERL_SI *curstackinfo;
146	AV *curstack;
147	AV *mainstack;
148	SV **stack_sp;
149	OP *op;
150	SV **curpad;
151	AV *comppad;
152	CV *compcv;
153	SV **stack_base;
154	SV **stack_max;
155	SV **tmps_stack;
156	I32 tmps_floor;
157	I32 tmps_ix;
158	I32 tmps_max;
159	I32 *markstack;
160	I32 *markstack_ptr;
161	I32 *markstack_max;
162	I32 *scopestack;
163	I32 scopestack_ix;
164	I32 scopestack_max;
165	ANY *savestack;
166	I32 savestack_ix;
167	I32 savestack_max;
168	OP **retstack;
169	I32 retstack_ix;
170	I32 retstack_max;
171	PMOP *curpm;
172	COP *curcop;
173		180
174	/* coro process data */	181	/* coro process data */
175	int prio;	182	int prio;
176	};	183	};
177		184
…		…
241		248
242	#define PERL_MAGIC_coro PERL_MAGIC_ext	249	#define PERL_MAGIC_coro PERL_MAGIC_ext
243		250
244	static MGVTBL vtbl_coro = {0, 0, 0, 0, coro_cv_free};	251	static MGVTBL vtbl_coro = {0, 0, 0, 0, coro_cv_free};
245		252
		253	#define CORO_MAGIC(cv) \
		254	SvMAGIC (cv) \
		255	? SvMAGIC (cv)->mg_type == PERL_MAGIC_coro \
		256	? SvMAGIC (cv) \
		257	: mg_find ((SV *)cv, PERL_MAGIC_coro) \
		258	: 0
		259
246	/* the next two functions merely cache the padlists */	260	/* the next two functions merely cache the padlists */
247	static void	261	static void
248	get_padlist (CV *cv)	262	get_padlist (CV *cv)
249	{	263	{
250	MAGIC mg = mg_find ((SV )cv, PERL_MAGIC_coro);	264	MAGIC *mg = CORO_MAGIC (cv);
		265	AV *av;
251		266
252	if (mg && AvFILLp ((AV *)mg->mg_obj) >= 0)	267	if (mg && AvFILLp ((av = (AV *)mg->mg_obj)) >= 0)
253	CvPADLIST (cv) = (AV )av_pop ((AV )mg->mg_obj);	268	CvPADLIST (cv) = (AV *)AvARRAY (av)[AvFILLp (av)--];
254	else	269	else
255	{	270	{
256	#if 0	271	#if PREFER_PERL_FUNCTIONS
257	/* this is probably cleaner, but also slower? */	272	/* this is probably cleaner, but also slower? */
258	CV *cp = Perl_cv_clone (cv);	273	CV *cp = Perl_cv_clone (cv);
259	CvPADLIST (cv) = CvPADLIST (cp);	274	CvPADLIST (cv) = CvPADLIST (cp);
260	CvPADLIST (cp) = 0;	275	CvPADLIST (cp) = 0;
261	SvREFCNT_dec (cp);	276	SvREFCNT_dec (cp);
…		…
266	}	281	}
267		282
268	static void	283	static void
269	put_padlist (CV *cv)	284	put_padlist (CV *cv)
270	{	285	{
271	MAGIC mg = mg_find ((SV )cv, PERL_MAGIC_coro);	286	MAGIC *mg = CORO_MAGIC (cv);
		287	AV *av;
272		288
273	if (!mg)	289	if (!mg)
274	{	290	{
275	sv_magic ((SV *)cv, 0, PERL_MAGIC_coro, 0, 0);	291	sv_magic ((SV *)cv, 0, PERL_MAGIC_coro, 0, 0);
276	mg = mg_find ((SV *)cv, PERL_MAGIC_coro);	292	mg = mg_find ((SV *)cv, PERL_MAGIC_coro);
277	mg->mg_virtual = &vtbl_coro;	293	mg->mg_virtual = &vtbl_coro;
278	mg->mg_obj = (SV *)newAV ();	294	mg->mg_obj = (SV *)newAV ();
279	}	295	}
280		296
281	av_push ((AV )mg->mg_obj, (SV )CvPADLIST (cv));	297	av = (AV *)mg->mg_obj;
		298
		299	if (AvFILLp (av) >= AvMAX (av))
		300	av_extend (av, AvMAX (av) + 1);
		301
		302	AvARRAY (av)[++AvFILLp (av)] = (SV *)CvPADLIST (cv);
282	}	303	}
283		304
284	#define SB do {	305	#define SB do {
285	#define SE } while (0)	306	#define SE } while (0)
286		307
287	#define LOAD(state) load_state((state));
288	#define SAVE(state,flags) save_state((state),(flags));
289
290	#define REPLACE_SV(sv,val) SB SvREFCNT_dec(sv); (sv) = (val); (val) = 0; SE	308	#define REPLACE_SV(sv,val) SB SvREFCNT_dec (sv); (sv) = (val); (val) = 0; SE
291		309
292	static void	310	static void
293	load_state(Coro__State c)	311	load_perl (Coro__State c)
294	{	312	{
295	PL_dowarn = c->dowarn;	313	#define VAR(name,type) PL_ ## name = c->name;
296	PL_in_eval = c->in_eval;	314	# include "state.h"
297		315	#undef VAR
298	PL_curstackinfo = c->curstackinfo;
299	PL_curstack = c->curstack;
300	PL_mainstack = c->mainstack;
301	PL_stack_sp = c->stack_sp;
302	PL_op = c->op;
303	PL_curpad = c->curpad;
304	PL_comppad = c->comppad;
305	PL_compcv = c->compcv;
306	PL_stack_base = c->stack_base;
307	PL_stack_max = c->stack_max;
308	PL_tmps_stack = c->tmps_stack;
309	PL_tmps_floor = c->tmps_floor;
310	PL_tmps_ix = c->tmps_ix;
311	PL_tmps_max = c->tmps_max;
312	PL_markstack = c->markstack;
313	PL_markstack_ptr = c->markstack_ptr;
314	PL_markstack_max = c->markstack_max;
315	PL_scopestack = c->scopestack;
316	PL_scopestack_ix = c->scopestack_ix;
317	PL_scopestack_max = c->scopestack_max;
318	PL_savestack = c->savestack;
319	PL_savestack_ix = c->savestack_ix;
320	PL_savestack_max = c->savestack_max;
321	#if !PERL_VERSION_ATLEAST (5,9,0)
322	PL_retstack = c->retstack;
323	PL_retstack_ix = c->retstack_ix;
324	PL_retstack_max = c->retstack_max;
325	#endif
326	PL_curpm = c->curpm;
327	PL_curcop = c->curcop;
328		316
329	if (c->defav) REPLACE_SV (GvAV (PL_defgv), c->defav);	317	if (c->defav) REPLACE_SV (GvAV (PL_defgv), c->defav);
330	if (c->defsv) REPLACE_SV (DEFSV , c->defsv);	318	if (c->defsv) REPLACE_SV (DEFSV , c->defsv);
331	if (c->errsv) REPLACE_SV (ERRSV , c->errsv);	319	if (c->errsv) REPLACE_SV (ERRSV , c->errsv);
		320	if (c->irssv)
		321	{
		322	if (c->irssv == PL_rs \|\| sv_eq (PL_rs, c->irssv))
		323	SvREFCNT_dec (c->irssv);
		324	else
		325	{
		326	REPLACE_SV (PL_rs, c->irssv);
		327	if (!c->irssv_sv) c->irssv_sv = get_sv ("/", 0);
		328	sv_setsv (c->irssv_sv, PL_rs);
		329	}
		330	}
332		331
333	{	332	{
334	dSP;	333	dSP;
335	CV *cv;	334	CV *cv;
336		335
337	/* now do the ugly restore mess */	336	/* now do the ugly restore mess */
338	while ((cv = (CV *)POPs))	337	while ((cv = (CV *)POPs))
339	{	338	{
340	AV padlist = (AV )POPs;
341
342	if (padlist)
343	{
344	put_padlist (cv); /* mark this padlist as available */	339	put_padlist (cv); /* mark this padlist as available */
345	CvPADLIST(cv) = padlist;	340	CvDEPTH (cv) = PTR2IV (POPs);
346	}	341	CvPADLIST (cv) = (AV *)POPs;
347
348	++CvDEPTH(cv);
349	}	342	}
350		343
351	PUTBACK;	344	PUTBACK;
352	}	345	}
353	}	346	}
354		347
355	static void	348	static void
356	save_state(Coro__State c, int flags)	349	save_perl (Coro__State c)
357	{	350	{
358	{	351	{
359	dSP;	352	dSP;
360	I32 cxix = cxstack_ix;	353	I32 cxix = cxstack_ix;
361	PERL_CONTEXT *ccstk = cxstack;	354	PERL_CONTEXT *ccstk = cxstack;
…		…
364	/*	357	/*
365	* the worst thing you can imagine happens first - we have to save	358	* the worst thing you can imagine happens first - we have to save
366	* (and reinitialize) all cv's in the whole callchain :(	359	* (and reinitialize) all cv's in the whole callchain :(
367	*/	360	*/
368		361
		362	EXTEND (SP, 3 + 1);
369	PUSHs (Nullsv);	363	PUSHs (Nullsv);
370	/* this loop was inspired by pp_caller */	364	/* this loop was inspired by pp_caller */
371	for (;;)	365	for (;;)
372	{	366	{
373	while (cxix >= 0)	367	while (cxix >= 0)
374	{	368	{
375	PERL_CONTEXT *cx = &ccstk[cxix--];	369	PERL_CONTEXT *cx = &ccstk[cxix--];
376		370
377	if (CxTYPE(cx) == CXt_SUB)	371	if (CxTYPE (cx) == CXt_SUB)
378	{	372	{
379	CV *cv = cx->blk_sub.cv;	373	CV *cv = cx->blk_sub.cv;
		374
380	if (CvDEPTH(cv))	375	if (CvDEPTH (cv))
381	{	376	{
382	EXTEND (SP, CvDEPTH(cv)*2);	377	EXTEND (SP, 3);
383
384	while (--CvDEPTH(cv))
385	{
386	/* this tells the restore code to increment CvDEPTH */
387	PUSHs (Nullsv);
388	PUSHs ((SV *)cv);
389	}
390
391	PUSHs ((SV *)CvPADLIST(cv));	378	PUSHs ((SV *)CvPADLIST (cv));
		379	PUSHs (INT2PTR (SV *, CvDEPTH (cv)));
392	PUSHs ((SV *)cv);	380	PUSHs ((SV *)cv);
393		381
		382	CvDEPTH (cv) = 0;
394	get_padlist (cv);	383	get_padlist (cv);
395	}	384	}
396	}	385	}
397	#ifdef CXt_FORMAT
398	else if (CxTYPE(cx) == CXt_FORMAT)
399	{
400	/* I never used formats, so how should I know how these are implemented? */
401	/* my bold guess is as a simple, plain sub... */
402	croak ("CXt_FORMAT not yet handled. Don't switch coroutines from within formats");
403	}
404	#endif
405	}	386	}
406		387
407	if (top_si->si_type == PERLSI_MAIN)	388	if (top_si->si_type == PERLSI_MAIN)
408	break;	389	break;
409		390
…		…
413	}	394	}
414		395
415	PUTBACK;	396	PUTBACK;
416	}	397	}
417		398
418	c->defav = flags & TRANSFER_SAVE_DEFAV ? (AV *)SvREFCNT_inc (GvAV (PL_defgv)) : 0;	399	c->defav = c->save & CORO_SAVE_DEFAV ? (AV *)SvREFCNT_inc (GvAV (PL_defgv)) : 0;
419	c->defsv = flags & TRANSFER_SAVE_DEFSV ? SvREFCNT_inc (DEFSV) : 0;	400	c->defsv = c->save & CORO_SAVE_DEFSV ? SvREFCNT_inc (DEFSV) : 0;
420	c->errsv = flags & TRANSFER_SAVE_ERRSV ? SvREFCNT_inc (ERRSV) : 0;	401	c->errsv = c->save & CORO_SAVE_ERRSV ? SvREFCNT_inc (ERRSV) : 0;
		402	c->irssv = c->save & CORO_SAVE_IRSSV ? SvREFCNT_inc (PL_rs) : 0;
421		403
422	c->dowarn = PL_dowarn;	404	#define VAR(name,type)c->name = PL_ ## name;
423	c->in_eval = PL_in_eval;	405	# include "state.h"
424		406	#undef VAR
425	c->curstackinfo = PL_curstackinfo;
426	c->curstack = PL_curstack;
427	c->mainstack = PL_mainstack;
428	c->stack_sp = PL_stack_sp;
429	c->op = PL_op;
430	c->curpad = PL_curpad;
431	c->comppad = PL_comppad;
432	c->compcv = PL_compcv;
433	c->stack_base = PL_stack_base;
434	c->stack_max = PL_stack_max;
435	c->tmps_stack = PL_tmps_stack;
436	c->tmps_floor = PL_tmps_floor;
437	c->tmps_ix = PL_tmps_ix;
438	c->tmps_max = PL_tmps_max;
439	c->markstack = PL_markstack;
440	c->markstack_ptr = PL_markstack_ptr;
441	c->markstack_max = PL_markstack_max;
442	c->scopestack = PL_scopestack;
443	c->scopestack_ix = PL_scopestack_ix;
444	c->scopestack_max = PL_scopestack_max;
445	c->savestack = PL_savestack;
446	c->savestack_ix = PL_savestack_ix;
447	c->savestack_max = PL_savestack_max;
448	#if !PERL_VERSION_ATLEAST (5,9,0)
449	c->retstack = PL_retstack;
450	c->retstack_ix = PL_retstack_ix;
451	c->retstack_max = PL_retstack_max;
452	#endif
453	c->curpm = PL_curpm;
454	c->curcop = PL_curcop;
455	}	407	}
456		408
457	/*	409	/*
458	* allocate various perl stacks. This is an exact copy	410	* allocate various perl stacks. This is an exact copy
459	* of perl.c:init_stacks, except that it uses less memory	411	* of perl.c:init_stacks, except that it uses less memory
460	* on the (sometimes correct) assumption that coroutines do	412	* on the (sometimes correct) assumption that coroutines do
461	* not usually need a lot of stackspace.	413	* not usually need a lot of stackspace.
462	*/	414	*/
		415	#if PREFER_PERL_FUNCTIONS
		416	# define coro_init_stacks init_stacks
		417	#else
463	static void	418	static void
464	coro_init_stacks ()	419	coro_init_stacks ()
465	{	420	{
466	PL_curstackinfo = new_stackinfo(96, 1024/sizeof(PERL_CONTEXT) - 1);	421	PL_curstackinfo = new_stackinfo(128, 1024/sizeof(PERL_CONTEXT));
467	PL_curstackinfo->si_type = PERLSI_MAIN;	422	PL_curstackinfo->si_type = PERLSI_MAIN;
468	PL_curstack = PL_curstackinfo->si_stack;	423	PL_curstack = PL_curstackinfo->si_stack;
469	PL_mainstack = PL_curstack; /* remember in case we switch stacks */	424	PL_mainstack = PL_curstack; /* remember in case we switch stacks */
470		425
471	PL_stack_base = AvARRAY(PL_curstack);	426	PL_stack_base = AvARRAY(PL_curstack);
472	PL_stack_sp = PL_stack_base;	427	PL_stack_sp = PL_stack_base;
473	PL_stack_max = PL_stack_base + AvMAX(PL_curstack);	428	PL_stack_max = PL_stack_base + AvMAX(PL_curstack);
474		429
475	New(50,PL_tmps_stack,96,SV*);	430	New(50,PL_tmps_stack,128,SV*);
476	PL_tmps_floor = -1;	431	PL_tmps_floor = -1;
477	PL_tmps_ix = -1;	432	PL_tmps_ix = -1;
478	PL_tmps_max = 96;	433	PL_tmps_max = 128;
479		434
480	New(54,PL_markstack,16,I32);	435	New(54,PL_markstack,32,I32);
481	PL_markstack_ptr = PL_markstack;	436	PL_markstack_ptr = PL_markstack;
482	PL_markstack_max = PL_markstack + 16;	437	PL_markstack_max = PL_markstack + 32;
483		438
484	#ifdef SET_MARK_OFFSET	439	#ifdef SET_MARK_OFFSET
485	SET_MARK_OFFSET;	440	SET_MARK_OFFSET;
486	#endif	441	#endif
487		442
488	New(54,PL_scopestack,16,I32);	443	New(54,PL_scopestack,32,I32);
489	PL_scopestack_ix = 0;	444	PL_scopestack_ix = 0;
490	PL_scopestack_max = 16;	445	PL_scopestack_max = 32;
491		446
492	New(54,PL_savestack,96,ANY);	447	New(54,PL_savestack,64,ANY);
493	PL_savestack_ix = 0;	448	PL_savestack_ix = 0;
494	PL_savestack_max = 96;	449	PL_savestack_max = 64;
495		450
496	#if !PERL_VERSION_ATLEAST (5,9,0)	451	#if !PERL_VERSION_ATLEAST (5,9,0)
497	New(54,PL_retstack,8,OP*);	452	New(54,PL_retstack,16,OP*);
498	PL_retstack_ix = 0;	453	PL_retstack_ix = 0;
499	PL_retstack_max = 8;	454	PL_retstack_max = 16;
500	#endif	455	#endif
501	}	456	}
		457	#endif
502		458
503	/*	459	/*
504	* destroy the stacks, the callchain etc...	460	* destroy the stacks, the callchain etc...
505	*/	461	*/
506	static void	462	static void
507	coro_destroy_stacks ()	463	coro_destroy_stacks ()
508	{	464	{
509	if (!IN_DESTRUCT)	465	if (!IN_DESTRUCT)
510	{	466	{
511	/* is this ugly, I ask? */	467	/* restore all saved variables and stuff */
512	LEAVE_SCOPE (0);	468	LEAVE_SCOPE (0);
		469	assert (PL_tmps_floor == -1);
513		470
514	/* sure it is, but more important: is it correct?? :/ */	471	/* free all temporaries */
515	FREETMPS;	472	FREETMPS;
		473	assert (PL_tmps_ix == -1);
516		474
517	/POPSTACK_TO (PL_mainstack);//D//use/	475	POPSTACK_TO (PL_mainstack);
518	}	476	}
519		477
520	while (PL_curstackinfo->si_next)	478	while (PL_curstackinfo->si_next)
521	PL_curstackinfo = PL_curstackinfo->si_next;	479	PL_curstackinfo = PL_curstackinfo->si_next;
522		480
523	while (PL_curstackinfo)	481	while (PL_curstackinfo)
524	{	482	{
525	PERL_SI *p = PL_curstackinfo->si_prev;	483	PERL_SI *p = PL_curstackinfo->si_prev;
526		484
527	{ /D//remove/
528	dSP;
529	SWITCHSTACK (PL_curstack, PL_curstackinfo->si_stack);
530	PUTBACK; /* possibly superfluous */
531	}
532
533	if (!IN_DESTRUCT)	485	if (!IN_DESTRUCT)
534	{
535	dounwind (-1);/D//remove/
536	SvREFCNT_dec (PL_curstackinfo->si_stack);	486	SvREFCNT_dec (PL_curstackinfo->si_stack);
537	}
538		487
539	Safefree (PL_curstackinfo->si_cxstack);	488	Safefree (PL_curstackinfo->si_cxstack);
540	Safefree (PL_curstackinfo);	489	Safefree (PL_curstackinfo);
541	PL_curstackinfo = p;	490	PL_curstackinfo = p;
542	}	491	}
…		…
557	* emulate part of the perl startup here.	506	* emulate part of the perl startup here.
558	*/	507	*/
559		508
560	coro_init_stacks ();	509	coro_init_stacks ();
561		510
562	PL_curcop = 0;	511	PL_curcop = &PL_compiling;
563	PL_in_eval = 0;	512	PL_in_eval = EVAL_NULL;
564	PL_curpm = 0;	513	PL_curpm = 0;
		514	PL_localizing = 0;
		515	PL_dirty = 0;
		516	PL_restartop = 0;
565		517
566	{	518	{
567	dSP;	519	dSP;
568	LOGOP myop;	520	LOGOP myop;
569		521
570	/* I have no idea why this is needed, but it is */
571	PUSHMARK (SP);
572
573	SvREFCNT_dec (GvAV (PL_defgv));	522	SvREFCNT_dec (GvAV (PL_defgv));
574	GvAV (PL_defgv) = coro->args; coro->args = 0;	523	GvAV (PL_defgv) = coro->args; coro->args = 0;
575		524
576	Zero (&myop, 1, LOGOP);	525	Zero (&myop, 1, LOGOP);
577	myop.op_next = Nullop;	526	myop.op_next = Nullop;
578	myop.op_flags = OPf_WANT_VOID;	527	myop.op_flags = OPf_WANT_VOID;
579		528
		529	PUSHMARK (SP);
		530	XPUSHs ((SV *)get_cv ("Coro::State::_coro_init", FALSE));
		531	PUTBACK;
580	PL_op = (OP *)&myop;	532	PL_op = (OP *)&myop;
581
582	PUSHMARK (SP);
583	XPUSHs ((SV *)get_cv ("Coro::State::coro_init", FALSE));
584	PUTBACK;
585	PL_op = PL_ppaddr[OP_ENTERSUB](aTHX);	533	PL_op = PL_ppaddr[OP_ENTERSUB](aTHX);
586	SPAGAIN;	534	SPAGAIN;
587
588	ENTER; /* necessary e.g. for dounwind */
589	}	535	}
		536
		537	ENTER; /* necessary e.g. for dounwind */
590	}	538	}
591		539
592	static void	540	static void
593	free_coro_mortal ()	541	free_coro_mortal ()
594	{	542	{
…		…
597	SvREFCNT_dec (coro_mortal);	545	SvREFCNT_dec (coro_mortal);
598	coro_mortal = 0;	546	coro_mortal = 0;
599	}	547	}
600	}	548	}
601		549
		550	/* inject a fake call to Coro::State::_cctx_init into the execution */
602	static void NOINLINE	551	static void NOINLINE
603	prepare_cctx (coro_cctx *cctx)	552	prepare_cctx (coro_cctx *cctx)
604	{	553	{
605	dSP;	554	dSP;
606	LOGOP myop;	555	LOGOP myop;
607		556
608	Zero (&myop, 1, LOGOP);	557	Zero (&myop, 1, LOGOP);
609	myop.op_next = PL_op;	558	myop.op_next = PL_op;
610	myop.op_flags = OPf_WANT_VOID;	559	myop.op_flags = OPf_WANT_VOID \| OPf_STACKED;
611
612	sv_setiv (get_sv ("Coro::State::cctx", FALSE), PTR2IV (cctx));
613		560
614	PUSHMARK (SP);	561	PUSHMARK (SP);
		562	EXTEND (SP, 2);
		563	PUSHs (sv_2mortal (newSViv (PTR2IV (cctx))));
615	XPUSHs ((SV *)get_cv ("Coro::State::cctx_init", FALSE));	564	PUSHs ((SV *)get_cv ("Coro::State::_cctx_init", FALSE));
616	PUTBACK;	565	PUTBACK;
		566	PL_op = (OP *)&myop;
617	PL_restartop = PL_ppaddr[OP_ENTERSUB](aTHX);	567	PL_op = PL_ppaddr[OP_ENTERSUB](aTHX);
618	SPAGAIN;	568	SPAGAIN;
619	}	569	}
620		570
621	static void	571	static void
622	coro_run (void *arg)	572	coro_run (void *arg)
623	{	573	{
624	/* coro_run is the alternative epilogue of transfer() */	574	/* coro_run is the alternative tail of transfer(), so unlock here. */
625	UNLOCK;	575	UNLOCK;
626		576
627	/*	577	/*
628	* this is a _very_ stripped down perl interpreter ;)	578	* this is a _very_ stripped down perl interpreter ;)
629	*/	579	*/
630	PL_top_env = &PL_start_env;	580	PL_top_env = &PL_start_env;
		581
631	/* inject call to cctx_init */	582	/* inject call to cctx_init */
632	prepare_cctx ((coro_cctx *)arg);	583	prepare_cctx ((coro_cctx *)arg);
633		584
634	/* somebody will hit me for both perl_run and PL_restartop */	585	/* somebody will hit me for both perl_run and PL_restartop */
		586	PL_restartop = PL_op;
635	perl_run (PL_curinterp);	587	perl_run (PL_curinterp);
636		588
637	fputs ("FATAL: C coroutine fell over the edge of the world, aborting. Did you call exit in a coroutine?\n", stderr);	589	fputs ("FATAL: C coroutine fell over the edge of the world, aborting. Did you call exit in a coroutine?\n", stderr);
638	abort ();	590	abort ();
639	}	591	}
…		…
641	static coro_cctx *	593	static coro_cctx *
642	cctx_new ()	594	cctx_new ()
643	{	595	{
644	coro_cctx *cctx;	596	coro_cctx *cctx;
645		597
		598	++cctx_count;
		599
646	New (0, cctx, 1, coro_cctx);	600	Newz (0, cctx, 1, coro_cctx);
647		601
648	#if HAVE_MMAP	602	#if HAVE_MMAP
649		603
650	cctx->ssize = ((STACKSIZE * sizeof (long) + PAGESIZE - 1) / PAGESIZE + STACKGUARD) * PAGESIZE;	604	cctx->ssize = ((STACKSIZE * sizeof (long) + PAGESIZE - 1) / PAGESIZE + STACKGUARD) * PAGESIZE;
651	/* mmap suppsedly does allocate-on-write for us */	605	/* mmap supposedly does allocate-on-write for us */
652	cctx->sptr = mmap (0, cctx->ssize, PROT_EXEC\|PROT_READ\|PROT_WRITE, MAP_PRIVATE\|MAP_ANONYMOUS, 0, 0);	606	cctx->sptr = mmap (0, cctx->ssize, PROT_EXEC\|PROT_READ\|PROT_WRITE, MAP_PRIVATE\|MAP_ANONYMOUS, 0, 0);
653		607
654	if (cctx->sptr == (void *)-1)	608	if (cctx->sptr == (void *)-1)
655	{	609	{
656	perror ("FATAL: unable to mmap stack for coroutine");	610	perror ("FATAL: unable to mmap stack for coroutine");
…		…
685		639
686	return cctx;	640	return cctx;
687	}	641	}
688		642
689	static void	643	static void
690	cctx_free (coro_cctx *cctx)	644	cctx_destroy (coro_cctx *cctx)
691	{	645	{
692	if (!cctx)	646	if (!cctx)
693	return;	647	return;
		648
		649	--cctx_count;
694		650
695	#if USE_VALGRIND	651	#if USE_VALGRIND
696	VALGRIND_STACK_DEREGISTER (cctx->valgrind_id);	652	VALGRIND_STACK_DEREGISTER (cctx->valgrind_id);
697	#endif	653	#endif
698		654
…		…
703	#endif	659	#endif
704		660
705	Safefree (cctx);	661	Safefree (cctx);
706	}	662	}
707		663
708	static coro_cctx *cctx_first;
709	static int cctx_count, cctx_idle;
710
711	static coro_cctx *	664	static coro_cctx *
712	cctx_get ()	665	cctx_get ()
713	{	666	{
714	coro_cctx *cctx;	667	coro_cctx *cctx;
715		668
716	if (cctx_first)	669	if (cctx_first)
717	{	670	{
718	--cctx_idle;
719	cctx = cctx_first;	671	cctx = cctx_first;
720	cctx_first = cctx->next;	672	cctx_first = cctx->next;
		673	--cctx_idle;
721	}	674	}
722	else	675	else
723	{	676	{
724	++cctx_count;
725	cctx = cctx_new ();	677	cctx = cctx_new ();
726	PL_op = PL_op->op_next;	678	PL_op = PL_op->op_next;
727	}	679	}
728		680
729	return cctx;	681	return cctx;
730	}	682	}
731		683
732	static void	684	static void
733	cctx_put (coro_cctx *cctx)	685	cctx_put (coro_cctx *cctx)
734	{	686	{
		687	/* free another cctx if overlimit */
		688	if (cctx_idle >= MAX_IDLE_CCTX)
		689	{
		690	coro_cctx *first = cctx_first;
		691	cctx_first = first->next;
		692	--cctx_idle;
		693
		694	assert (!first->inuse);
		695	cctx_destroy (first);
		696	}
		697
735	++cctx_idle;	698	++cctx_idle;
736	cctx->next = cctx_first;	699	cctx->next = cctx_first;
737	cctx_first = cctx;	700	cctx_first = cctx;
738	}	701	}
739		702
740	/* never call directly, always through the coro_state_transfer global variable */	703	/* never call directly, always through the coro_state_transfer global variable */
741	static void NOINLINE	704	static void NOINLINE
742	transfer (struct coro prev, struct coro next, int flags)	705	transfer (struct coro prev, struct coro next)
743	{	706	{
744	dSTACKLEVEL;	707	dSTACKLEVEL;
745		708
746	/* sometimes transfer is only called to set idle_sp */	709	/* sometimes transfer is only called to set idle_sp */
747	if (flags == TRANSFER_SET_STACKLEVEL)	710	if (!next)
		711	{
748	((coro_cctx *)prev)->idle_sp = STACKLEVEL;	712	((coro_cctx *)prev)->idle_sp = STACKLEVEL;
		713	assert (((coro_cctx )prev)->top_env = PL_top_env); / just for the side effetc when assert is enabled */
		714	}
749	else if (prev != next)	715	else if (prev != next)
750	{	716	{
751	coro_cctx *prev__cctx;	717	coro_cctx *prev__cctx;
752		718
		719	if (prev->flags & CF_NEW)
		720	{
		721	/* create a new empty context */
		722	Newz (0, prev->cctx, 1, coro_cctx);
		723	prev->cctx->inuse = 1;
		724	prev->flags &= ~CF_NEW;
		725	prev->flags \|= CF_RUNNING;
		726	}
		727
		728	/TODO: must not croak here /
		729	if (!prev->flags & CF_RUNNING)
		730	croak ("Coro::State::transfer called with non-running prev Coro::State, but can only transfer from running states");
		731
		732	if (next->flags & CF_RUNNING)
		733	croak ("Coro::State::transfer called with running next Coro::State, but can only transfer to inactive states");
		734
		735	prev->flags &= ~CF_RUNNING;
		736	next->flags \|= CF_RUNNING;
		737
753	LOCK;	738	LOCK;
754		739
755	if (next->mainstack)	740	if (next->flags & CF_NEW)
756	{	741	{
757	/* coroutine already started */	742	/* need to start coroutine */
758	SAVE (prev, flags);	743	next->flags &= ~CF_NEW;
759	LOAD (next);	744	/* first get rid of the old state */
		745	save_perl (prev);
		746	/* setup coroutine call */
		747	setup_coro (next);
		748	/* need a new stack */
		749	assert (!next->cctx);
760	}	750	}
761	else	751	else
762	{	752	{
763	/* need to start coroutine */	753	/* coroutine already started */
764	/* first get rid of the old state */	754	save_perl (prev);
765	SAVE (prev, -1);	755	load_perl (next);
766	/* setup coroutine call */
767	setup_coro (next);
768	/* need a stack */
769	next->cctx = 0;
770	}	756	}
771
772	if (!prev->cctx)
773	/* create a new empty context */
774	Newz (0, prev->cctx, 1, coro_cctx);
775		757
776	prev__cctx = prev->cctx;	758	prev__cctx = prev->cctx;
777		759
778	/* possibly "free" the cctx */	760	/* possibly "free" the cctx */
779	if (prev__cctx->idle_sp == STACKLEVEL)	761	if (prev__cctx->idle_sp == STACKLEVEL)
780	{	762	{
		763	/* I assume that STACKLEVEL is a stronger indicator than PL_top_env changes */
		764	assert (PL_top_env == prev__cctx->top_env);
		765
		766	prev->cctx = 0;
		767
781	cctx_put (prev__cctx);	768	cctx_put (prev__cctx);
782	prev->cctx = 0;	769	prev__cctx->inuse = 0;
783	}	770	}
784		771
785	if (!next->cctx)	772	if (!next->cctx)
		773	{
786	next->cctx = cctx_get ();	774	next->cctx = cctx_get ();
		775	assert (!next->cctx->inuse);
		776	next->cctx->inuse = 1;
		777	}
787		778
788	if (prev__cctx != next->cctx)	779	if (prev__cctx != next->cctx)
789	{	780	{
790	prev__cctx->top_env = PL_top_env;	781	prev__cctx->top_env = PL_top_env;
791	PL_top_env = next->cctx->top_env;	782	PL_top_env = next->cctx->top_env;
…		…
799	}	790	}
800		791
801	struct transfer_args	792	struct transfer_args
802	{	793	{
803	struct coro prev, next;	794	struct coro prev, next;
804	int flags;
805	};	795	};
806		796
807	#define TRANSFER(ta) transfer ((ta).prev, (ta).next, (ta).flags)	797	#define TRANSFER(ta) transfer ((ta).prev, (ta).next)
808		798
809	static void	799	static void
810	coro_state_destroy (struct coro *coro)	800	coro_state_destroy (struct coro *coro)
811	{	801	{
812	if (coro->refcnt--)	802	if (coro->refcnt--)
813	return;	803	return;
814		804
815	if (coro->mainstack && coro->mainstack != main_mainstack)	805	if (coro->mainstack && coro->mainstack != main_mainstack)
816	{	806	{
817	struct coro temp;	807	struct coro temp;
		808	Zero (&temp, 1, struct coro);
		809	temp.save = CORO_SAVE_ALL;
818		810
819	SAVE ((&temp), TRANSFER_SAVE_ALL);	811	if (coro->flags & CF_RUNNING)
820	LOAD (coro);	812	croak ("FATAL: tried to destroy currently running coroutine");
		813
		814	save_perl (&temp);
		815	load_perl (coro);
821		816
822	coro_destroy_stacks ();	817	coro_destroy_stacks ();
823		818
824	LOAD ((&temp)); /* this will get rid of defsv etc.. */	819	load_perl (&temp); /* this will get rid of defsv etc.. */
825		820
826	coro->mainstack = 0;	821	coro->mainstack = 0;
827	}	822	}
828		823
829	cctx_free (coro->cctx);	824	cctx_destroy (coro->cctx);
830	SvREFCNT_dec (coro->args);	825	SvREFCNT_dec (coro->args);
831	Safefree (coro);	826	Safefree (coro);
832	}	827	}
833		828
834	static int	829	static int
…		…
884	assert (mg->mg_type == PERL_MAGIC_ext);	879	assert (mg->mg_type == PERL_MAGIC_ext);
885	return (struct coro *)mg->mg_ptr;	880	return (struct coro *)mg->mg_ptr;
886	}	881	}
887		882
888	static void	883	static void
889	prepare_transfer (struct transfer_args ta, SV prev, SV *next, int flags)	884	prepare_transfer (struct transfer_args ta, SV prev_sv, SV *next_sv)
890	{	885	{
891	ta->prev = SvSTATE (prev);	886	ta->prev = SvSTATE (prev_sv);
892	ta->next = SvSTATE (next);	887	ta->next = SvSTATE (next_sv);
893	ta->flags = flags;
894	}	888	}
895		889
896	static void	890	static void
897	api_transfer (SV prev, SV next, int flags)	891	api_transfer (SV prev_sv, SV next_sv)
898	{	892	{
899	dTHX;
900	struct transfer_args ta;	893	struct transfer_args ta;
901		894
902	prepare_transfer (&ta, prev, next, flags);	895	prepare_transfer (&ta, prev_sv, next_sv);
903	TRANSFER (ta);	896	TRANSFER (ta);
		897	}
		898
		899	static int
		900	api_save (SV *coro_sv, int new_save)
		901	{
		902	struct coro *coro = SvSTATE (coro_sv);
		903	int old_save = coro->save;
		904
		905	if (new_save >= 0)
		906	coro->save = new_save;
		907
		908	return old_save;
904	}	909	}
905		910
906	/ Coro ******************************************************************/	911	/ Coro ******************************************************************/
907		912
908	#define PRIO_MAX 3	913	#define PRIO_MAX 3
…		…
911	#define PRIO_LOW -1	916	#define PRIO_LOW -1
912	#define PRIO_IDLE -3	917	#define PRIO_IDLE -3
913	#define PRIO_MIN -4	918	#define PRIO_MIN -4
914		919
915	/* for Coro.pm */	920	/* for Coro.pm */
916	static GV coro_current, coro_idle;	921	static SV *coro_current;
917	static AV *coro_ready [PRIO_MAX-PRIO_MIN+1];	922	static AV *coro_ready [PRIO_MAX-PRIO_MIN+1];
918	static int coro_nready;	923	static int coro_nready;
919		924
920	static void	925	static void
921	coro_enq (SV *sv)	926	coro_enq (SV *coro_sv)
922	{	927	{
923	int prio;
924
925	if (SvTYPE (sv) != SVt_PVHV)
926	croak ("Coro::ready tried to enqueue something that is not a coroutine");
927
928	prio = SvSTATE (sv)->prio;
929
930	av_push (coro_ready [prio - PRIO_MIN], sv);	928	av_push (coro_ready [SvSTATE (coro_sv)->prio - PRIO_MIN], coro_sv);
931	coro_nready++;	929	coro_nready++;
932	}	930	}
933		931
934	static SV *	932	static SV *
935	coro_deq (int min_prio)	933	coro_deq (int min_prio)
…		…
948	}	946	}
949		947
950	return 0;	948	return 0;
951	}	949	}
952		950
953	static void	951	static int
954	api_ready (SV *coro)	952	api_ready (SV *coro_sv)
955	{	953	{
956	dTHX;	954	struct coro *coro;
957		955
958	if (SvROK (coro))	956	if (SvROK (coro_sv))
959	coro = SvRV (coro);	957	coro_sv = SvRV (coro_sv);
		958
		959	coro = SvSTATE (coro_sv);
		960
		961	if (coro->flags & CF_READY)
		962	return 0;
		963
		964	coro->flags \|= CF_READY;
960		965
961	LOCK;	966	LOCK;
962	coro_enq (SvREFCNT_inc (coro));	967	coro_enq (SvREFCNT_inc (coro_sv));
963	UNLOCK;	968	UNLOCK;
		969
		970	return 1;
		971	}
		972
		973	static int
		974	api_is_ready (SV *coro_sv)
		975	{
		976	return !!(SvSTATE (coro_sv)->flags & CF_READY);
964	}	977	}
965		978
966	static void	979	static void
967	prepare_schedule (struct transfer_args *ta)	980	prepare_schedule (struct transfer_args *ta)
968	{	981	{
969	SV current, prev, *next;	982	SV prev, next;
970
971	current = GvSV (coro_current);
972		983
973	for (;;)	984	for (;;)
974	{	985	{
975	LOCK;	986	LOCK;
976	next = coro_deq (PRIO_MIN);	987	next = coro_deq (PRIO_MIN);
…		…
985	ENTER;	996	ENTER;
986	SAVETMPS;	997	SAVETMPS;
987		998
988	PUSHMARK (SP);	999	PUSHMARK (SP);
989	PUTBACK;	1000	PUTBACK;
990	call_sv (GvSV (coro_idle), G_DISCARD);	1001	call_sv (get_sv ("Coro::idle", FALSE), G_DISCARD);
991		1002
992	FREETMPS;	1003	FREETMPS;
993	LEAVE;	1004	LEAVE;
994	}	1005	}
995	}	1006	}
996		1007
997	prev = SvRV (current);	1008	prev = SvRV (coro_current);
998	SvRV (current) = next;	1009	SvRV_set (coro_current, next);
999		1010
1000	/* free this only after the transfer */	1011	/* free this only after the transfer */
1001	LOCK;	1012	LOCK;
1002	free_coro_mortal ();	1013	free_coro_mortal ();
1003	UNLOCK;	1014	UNLOCK;
1004	coro_mortal = prev;	1015	coro_mortal = prev;
1005		1016
		1017	assert (!SvROK(prev));//D
		1018	assert (!SvROK(next));//D
		1019
1006	ta->prev = SvSTATE (prev);	1020	ta->prev = SvSTATE (prev);
1007	ta->next = SvSTATE (next);	1021	ta->next = SvSTATE (next);
1008	ta->flags = TRANSFER_SAVE_ALL;	1022
		1023	assert (ta->next->flags & CF_READY);
		1024	ta->next->flags &= ~CF_READY;
1009	}	1025	}
1010		1026
1011	static void	1027	static void
1012	prepare_cede (struct transfer_args *ta)	1028	prepare_cede (struct transfer_args *ta)
1013	{	1029	{
1014	LOCK;	1030	api_ready (coro_current);
1015	coro_enq (SvREFCNT_inc (SvRV (GvSV (coro_current))));
1016	UNLOCK;
1017
1018	prepare_schedule (ta);	1031	prepare_schedule (ta);
1019	}	1032	}
1020		1033
		1034	static int
		1035	prepare_cede_notself (struct transfer_args *ta)
		1036	{
		1037	if (coro_nready)
		1038	{
		1039	SV *prev = SvRV (coro_current);
		1040	prepare_schedule (ta);
		1041	api_ready (prev);
		1042	return 1;
		1043	}
		1044	else
		1045	return 0;
		1046	}
		1047
1021	static void	1048	static void
1022	api_schedule (void)	1049	api_schedule (void)
1023	{	1050	{
1024	dTHX;
1025	struct transfer_args ta;	1051	struct transfer_args ta;
1026		1052
1027	prepare_schedule (&ta);	1053	prepare_schedule (&ta);
1028	TRANSFER (ta);	1054	TRANSFER (ta);
1029	}	1055	}
1030		1056
1031	static void	1057	static int
1032	api_cede (void)	1058	api_cede (void)
1033	{	1059	{
1034	dTHX;
1035	struct transfer_args ta;	1060	struct transfer_args ta;
1036		1061
1037	prepare_cede (&ta);	1062	prepare_cede (&ta);
		1063
		1064	if (ta.prev != ta.next)
		1065	{
1038	TRANSFER (ta);	1066	TRANSFER (ta);
		1067	return 1;
		1068	}
		1069	else
		1070	return 0;
		1071	}
		1072
		1073	static int
		1074	api_cede_notself (void)
		1075	{
		1076	struct transfer_args ta;
		1077
		1078	if (prepare_cede_notself (&ta))
		1079	{
		1080	TRANSFER (ta);
		1081	return 1;
		1082	}
		1083	else
		1084	return 0;
1039	}	1085	}
1040		1086
1041	MODULE = Coro::State PACKAGE = Coro::State	1087	MODULE = Coro::State PACKAGE = Coro::State
1042		1088
1043	PROTOTYPES: DISABLE	1089	PROTOTYPES: DISABLE
…		…
1049	#endif	1095	#endif
1050	BOOT_PAGESIZE;	1096	BOOT_PAGESIZE;
1051		1097
1052	coro_state_stash = gv_stashpv ("Coro::State", TRUE);	1098	coro_state_stash = gv_stashpv ("Coro::State", TRUE);
1053		1099
1054	newCONSTSUB (coro_state_stash, "SAVE_DEFAV", newSViv (TRANSFER_SAVE_DEFAV));	1100	newCONSTSUB (coro_state_stash, "SAVE_DEFAV", newSViv (CORO_SAVE_DEFAV));
1055	newCONSTSUB (coro_state_stash, "SAVE_DEFSV", newSViv (TRANSFER_SAVE_DEFSV));	1101	newCONSTSUB (coro_state_stash, "SAVE_DEFSV", newSViv (CORO_SAVE_DEFSV));
1056	newCONSTSUB (coro_state_stash, "SAVE_ERRSV", newSViv (TRANSFER_SAVE_ERRSV));	1102	newCONSTSUB (coro_state_stash, "SAVE_ERRSV", newSViv (CORO_SAVE_ERRSV));
		1103	newCONSTSUB (coro_state_stash, "SAVE_IRSSV", newSViv (CORO_SAVE_IRSSV));
		1104	newCONSTSUB (coro_state_stash, "SAVE_ALL", newSViv (CORO_SAVE_ALL));
1057		1105
1058	main_mainstack = PL_mainstack;	1106	main_mainstack = PL_mainstack;
1059		1107
1060	coroapi.ver = CORO_API_VERSION;	1108	coroapi.ver = CORO_API_VERSION;
1061	coroapi.transfer = api_transfer;	1109	coroapi.transfer = api_transfer;
…		…
1071	HV *hv;	1119	HV *hv;
1072	int i;	1120	int i;
1073		1121
1074	Newz (0, coro, 1, struct coro);	1122	Newz (0, coro, 1, struct coro);
1075	coro->args = newAV ();	1123	coro->args = newAV ();
		1124	coro->save = CORO_SAVE_ALL;
		1125	coro->flags = CF_NEW;
1076		1126
1077	hv = newHV ();	1127	hv = newHV ();
1078	sv_magicext ((SV )hv, 0, PERL_MAGIC_ext, &coro_state_vtbl, (char )coro, 0)->mg_flags \|= MGf_DUP;	1128	sv_magicext ((SV )hv, 0, PERL_MAGIC_ext, &coro_state_vtbl, (char )coro, 0)->mg_flags \|= MGf_DUP;
1079	RETVAL = sv_bless (newRV_noinc ((SV *)hv), gv_stashpv (klass, 1));	1129	RETVAL = sv_bless (newRV_noinc ((SV *)hv), gv_stashpv (klass, 1));
1080		1130
1081	for (i = 1; i < items; i++)	1131	for (i = 1; i < items; i++)
1082	av_push (coro->args, newSVsv (ST (i)));	1132	av_push (coro->args, newSVsv (ST (i)));
1083	}	1133	}
1084	OUTPUT:	1134	OUTPUT:
		1135	RETVAL
		1136
		1137	int
		1138	save (SV *coro, int new_save = -1)
		1139	CODE:
		1140	RETVAL = api_save (coro, new_save);
		1141	OUTPUT:
1085	RETVAL	1142	RETVAL
1086		1143
1087	void	1144	void
1088	_set_stacklevel (...)	1145	_set_stacklevel (...)
1089	ALIAS:	1146	ALIAS:
1090	Coro::State::transfer = 1	1147	Coro::State::transfer = 1
1091	Coro::schedule = 2	1148	Coro::schedule = 2
1092	Coro::cede = 3	1149	Coro::cede = 3
1093	Coro::Cont::yield = 4	1150	Coro::cede_notself = 4
1094	CODE:	1151	CODE:
1095	{	1152	{
1096	struct transfer_args ta;	1153	struct transfer_args ta;
1097		1154
1098	switch (ix)	1155	switch (ix)
1099	{	1156	{
1100	case 0:	1157	case 0:
1101	ta.prev = (struct coro )INT2PTR (coro_cctx , SvIV (ST (0)));	1158	ta.prev = (struct coro )INT2PTR (coro_cctx , SvIV (ST (0)));
1102	ta.next = 0;	1159	ta.next = 0;
1103	ta.flags = TRANSFER_SET_STACKLEVEL;
1104	break;	1160	break;
1105		1161
1106	case 1:	1162	case 1:
1107	if (items != 3)	1163	if (items != 2)
1108	croak ("Coro::State::transfer(prev,next,flags) expects three arguments, not %d", items);	1164	croak ("Coro::State::transfer (prev,next) expects two arguments, not %d", items);
1109		1165
1110	prepare_transfer (&ta, ST (0), ST (1), SvIV (ST (2)));	1166	prepare_transfer (&ta, ST (0), ST (1));
1111	break;	1167	break;
1112		1168
1113	case 2:	1169	case 2:
1114	prepare_schedule (&ta);	1170	prepare_schedule (&ta);
1115	break;	1171	break;
…		…
1117	case 3:	1173	case 3:
1118	prepare_cede (&ta);	1174	prepare_cede (&ta);
1119	break;	1175	break;
1120		1176
1121	case 4:	1177	case 4:
1122	{	1178	if (!prepare_cede_notself (&ta))
1123	SV *yieldstack;	1179	XSRETURN_EMPTY;
1124	SV *sv;
1125	AV *defav = GvAV (PL_defgv);
1126		1180
1127	yieldstack = *hv_fetch (
1128	(HV *)SvRV (GvSV (coro_current)),
1129	"yieldstack", sizeof ("yieldstack") - 1,
1130	0
1131	);
1132
1133	/* set up @_ -- ugly */
1134	av_clear (defav);
1135	av_fill (defav, items - 1);
1136	while (items--)
1137	av_store (defav, items, SvREFCNT_inc (ST(items)));
1138
1139	sv = av_pop ((AV *)SvRV (yieldstack));
1140	ta.prev = SvSTATE (av_fetch ((AV )SvRV (sv), 0, 0));
1141	ta.next = SvSTATE (av_fetch ((AV )SvRV (sv), 1, 0));
1142	ta.flags = 0;
1143	SvREFCNT_dec (sv);
1144	}
1145	break;	1181	break;
1146
1147	}	1182	}
1148		1183
		1184	BARRIER;
1149	TRANSFER (ta);	1185	TRANSFER (ta);
1150	}	1186	}
1151		1187
1152	void	1188	void
1153	_clone_state_from (SV dst, SV src)	1189	_clone_state_from (SV dst, SV src)
…		…
1195	newCONSTSUB (coro_stash, "PRIO_NORMAL", newSViv (PRIO_NORMAL));	1231	newCONSTSUB (coro_stash, "PRIO_NORMAL", newSViv (PRIO_NORMAL));
1196	newCONSTSUB (coro_stash, "PRIO_LOW", newSViv (PRIO_LOW));	1232	newCONSTSUB (coro_stash, "PRIO_LOW", newSViv (PRIO_LOW));
1197	newCONSTSUB (coro_stash, "PRIO_IDLE", newSViv (PRIO_IDLE));	1233	newCONSTSUB (coro_stash, "PRIO_IDLE", newSViv (PRIO_IDLE));
1198	newCONSTSUB (coro_stash, "PRIO_MIN", newSViv (PRIO_MIN));	1234	newCONSTSUB (coro_stash, "PRIO_MIN", newSViv (PRIO_MIN));
1199		1235
1200	coro_current = gv_fetchpv ("Coro::current", TRUE, SVt_PV);	1236	coro_current = get_sv ("Coro::current", FALSE);
1201	coro_idle = gv_fetchpv ("Coro::idle" , TRUE, SVt_PV);	1237	SvREADONLY_on (coro_current);
1202		1238
1203	for (i = PRIO_MAX - PRIO_MIN + 1; i--; )	1239	for (i = PRIO_MAX - PRIO_MIN + 1; i--; )
1204	coro_ready[i] = newAV ();	1240	coro_ready[i] = newAV ();
1205		1241
1206	{	1242	{
1207	SV *sv = perl_get_sv("Coro::API", 1);	1243	SV *sv = perl_get_sv("Coro::API", 1);
1208		1244
1209	coroapi.schedule = api_schedule;	1245	coroapi.schedule = api_schedule;
		1246	coroapi.save = api_save;
1210	coroapi.cede = api_cede;	1247	coroapi.cede = api_cede;
		1248	coroapi.cede_notself = api_cede_notself;
1211	coroapi.ready = api_ready;	1249	coroapi.ready = api_ready;
		1250	coroapi.is_ready = api_is_ready;
1212	coroapi.nready = &coro_nready;	1251	coroapi.nready = &coro_nready;
1213	coroapi.current = coro_current;	1252	coroapi.current = coro_current;
1214		1253
1215	GCoroAPI = &coroapi;	1254	GCoroAPI = &coroapi;
1216	sv_setiv (sv, (IV)&coroapi);	1255	sv_setiv (sv, (IV)&coroapi);
1217	SvREADONLY_on (sv);	1256	SvREADONLY_on (sv);
1218	}	1257	}
1219	}	1258	}
		1259
		1260	void
		1261	_set_current (SV *current)
		1262	PROTOTYPE: $
		1263	CODE:
		1264	SvREFCNT_dec (SvRV (coro_current));
		1265	SvRV_set (coro_current, SvREFCNT_inc (SvRV (current)));
1220		1266
1221	int	1267	int
1222	prio (Coro::State coro, int newprio = 0)	1268	prio (Coro::State coro, int newprio = 0)
1223	ALIAS:	1269	ALIAS:
1224	nice = 1	1270	nice = 1
…		…
1227	RETVAL = coro->prio;	1273	RETVAL = coro->prio;
1228		1274
1229	if (items > 1)	1275	if (items > 1)
1230	{	1276	{
1231	if (ix)	1277	if (ix)
1232	newprio += coro->prio;	1278	newprio = coro->prio - newprio;
1233		1279
1234	if (newprio < PRIO_MIN) newprio = PRIO_MIN;	1280	if (newprio < PRIO_MIN) newprio = PRIO_MIN;
1235	if (newprio > PRIO_MAX) newprio = PRIO_MAX;	1281	if (newprio > PRIO_MAX) newprio = PRIO_MAX;
1236		1282
1237	coro->prio = newprio;	1283	coro->prio = newprio;
1238	}	1284	}
1239	}	1285	}
		1286	OUTPUT:
		1287	RETVAL
1240		1288
1241	void	1289	SV *
1242	ready (SV *self)	1290	ready (SV *self)
1243	PROTOTYPE: $	1291	PROTOTYPE: $
1244	CODE:	1292	CODE:
1245	api_ready (self);	1293	RETVAL = boolSV (api_ready (self));
		1294	OUTPUT:
		1295	RETVAL
		1296
		1297	SV *
		1298	is_ready (SV *self)
		1299	PROTOTYPE: $
		1300	CODE:
		1301	RETVAL = boolSV (api_is_ready (self));
		1302	OUTPUT:
		1303	RETVAL
1246		1304
1247	int	1305	int
1248	nready (...)	1306	nready (...)
1249	PROTOTYPE:	1307	PROTOTYPE:
1250	CODE:	1308	CODE:
…		…
1256		1314
1257	SV *	1315	SV *
1258	_get_state ()	1316	_get_state ()
1259	CODE:	1317	CODE:
1260	{	1318	{
1261	struct {	1319	struct io_state *data;
1262	int errorno;
1263	int laststype;
1264	int laststatval;
1265	Stat_t statcache;
1266	} data;
1267		1320
		1321	RETVAL = newSV (sizeof (struct io_state));
		1322	data = (struct io_state *)SvPVX (RETVAL);
		1323	SvCUR_set (RETVAL, sizeof (struct io_state));
		1324	SvPOK_only (RETVAL);
		1325
1268	data.errorno = errno;	1326	data->errorno = errno;
1269	data.laststype = PL_laststype;	1327	data->laststype = PL_laststype;
1270	data.laststatval = PL_laststatval;	1328	data->laststatval = PL_laststatval;
1271	data.statcache = PL_statcache;	1329	data->statcache = PL_statcache;
1272
1273	RETVAL = newSVpvn ((char *)&data, sizeof data);
1274	}	1330	}
1275	OUTPUT:	1331	OUTPUT:
1276	RETVAL	1332	RETVAL
1277		1333
1278	void	1334	void
1279	_set_state (char *data_)	1335	_set_state (char *data_)
1280	PROTOTYPE: $	1336	PROTOTYPE: $
1281	CODE:	1337	CODE:
1282	{	1338	{
1283	struct {	1339	struct io_state data = (void )data_;
1284	int errorno;
1285	int laststype;
1286	int laststatval;
1287	Stat_t statcache;
1288	} data = (void )data_;
1289		1340
1290	errno = data->errorno;	1341	errno = data->errorno;
1291	PL_laststype = data->laststype;	1342	PL_laststype = data->laststype;
1292	PL_laststatval = data->laststatval;	1343	PL_laststatval = data->laststatval;
1293	PL_statcache = data->statcache;	1344	PL_statcache = data->statcache;
1294	}	1345	}
		1346

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Comparing Coro/Coro/State.xs (file contents): Revision 1.106 by root, Mon Nov 27 02:08:55 2006 UTC vs. Revision 1.131 by root, Fri Dec 29 11:37:49 2006 UTC

Diff Legend

Comparing Coro/Coro/State.xs (file contents):
Revision 1.106 by root, Mon Nov 27 02:08:55 2006 UTC vs.
Revision 1.131 by root, Fri Dec 29 11:37:49 2006 UTC