[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 1.127 by root, Tue Dec 12 13:56:45 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)
…		…
86	#endif	100	#endif
87		101
88	#define NOINLINE attribute ((noinline))	102	#define NOINLINE attribute ((noinline))
89		103
90	#include "CoroAPI.h"	104	#include "CoroAPI.h"
91
92	#define TRANSFER_SET_STACKLEVEL 0x8bfbfbfb /* magic cookie */
93		105
94	#ifdef USE_ITHREADS	106	#ifdef USE_ITHREADS
95	static perl_mutex coro_mutex;	107	static perl_mutex coro_mutex;
96	# define LOCK do { MUTEX_LOCK (&coro_mutex); } while (0)	108	# define LOCK do { MUTEX_LOCK (&coro_mutex); } while (0)
97	# define UNLOCK do { MUTEX_UNLOCK (&coro_mutex); } while (0)	109	# define UNLOCK do { MUTEX_UNLOCK (&coro_mutex); } while (0)
98	#else	110	#else
99	# define LOCK (void)0	111	# define LOCK (void)0
100	# define UNLOCK (void)0	112	# define UNLOCK (void)0
101	#endif	113	#endif
102		114
		115	struct io_state
		116	{
		117	int errorno;
		118	I32 laststype;
		119	int laststatval;
		120	Stat_t statcache;
		121	};
		122
103	static struct CoroAPI coroapi;	123	static struct CoroAPI coroapi;
104	static AV main_mainstack; / used to differentiate between $main and others */	124	static AV main_mainstack; / used to differentiate between $main and others */
105	static HV coro_state_stash, coro_stash;	125	static HV coro_state_stash, coro_stash;
106	static SV coro_mortal; / will be freed after next transfer */	126	static SV coro_mortal; / will be freed after next transfer */
107		127
		128	static struct coro_cctx *cctx_first;
		129	static int cctx_count, cctx_idle;
		130
108	/* this is a structure representing a c-level coroutine */	131	/* this is a structure representing a c-level coroutine */
109	typedef struct coro_cctx {	132	typedef struct coro_cctx {
110	struct coro_cctx *next;	133	struct coro_cctx *next;
111		134
112	/* the stack */	135	/* the stack */
…		…
116	/* cpu state */	139	/* cpu state */
117	void idle_sp; / sp of top-level transfer/schedule/cede call */	140	void idle_sp; / sp of top-level transfer/schedule/cede call */
118	JMPENV *top_env;	141	JMPENV *top_env;
119	coro_context cctx;	142	coro_context cctx;
120		143
		144	int inuse;
		145
121	#if USE_VALGRIND	146	#if USE_VALGRIND
122	int valgrind_id;	147	int valgrind_id;
123	#endif	148	#endif
124	} coro_cctx;	149	} coro_cctx;
		150
		151	enum {
		152	CF_RUNNING = 0x0001, /* coroutine is running */
		153	CF_READY = 0x0002, /* coroutine is ready */
		154	CF_NEW = 0x0004, /* ahs never been switched to */
		155	};
125		156
126	/* this is a structure representing a perl-level coroutine */	157	/* this is a structure representing a perl-level coroutine */
127	struct coro {	158	struct coro {
128	/* the c coroutine allocated to this perl coroutine, if any */	159	/* the c coroutine allocated to this perl coroutine, if any */
129	coro_cctx *cctx;	160	coro_cctx *cctx;
130		161
131	/* data associated with this coroutine (initial args) */	162	/* data associated with this coroutine (initial args) */
132	AV *args;	163	AV *args;
133	int refcnt;	164	int refcnt;
		165	int save; /* CORO_SAVE flags */
		166	int flags; /* CF_ flags */
134		167
135	/* optionally saved, might be zero */	168	/* optionally saved, might be zero */
136	AV *defav;	169	AV defav; / @_ */
137	SV *defsv;	170	SV defsv; / $_ */
138	SV *errsv;	171	SV errsv; / $@ */
		172	SV irssv; / $/ */
		173	SV irssv_sv; / real $/ cache */
139		174
140	/* saved global state not related to stacks */	175	#define VAR(name,type) type name;
141	U8 dowarn;	176	# include "state.h"
142	I32 in_eval;	177	#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		178
174	/* coro process data */	179	/* coro process data */
175	int prio;	180	int prio;
176	};	181	};
177		182
…		…
241		246
242	#define PERL_MAGIC_coro PERL_MAGIC_ext	247	#define PERL_MAGIC_coro PERL_MAGIC_ext
243		248
244	static MGVTBL vtbl_coro = {0, 0, 0, 0, coro_cv_free};	249	static MGVTBL vtbl_coro = {0, 0, 0, 0, coro_cv_free};
245		250
		251	#define CORO_MAGIC(cv) \
		252	SvMAGIC (cv) \
		253	? SvMAGIC (cv)->mg_type == PERL_MAGIC_coro \
		254	? SvMAGIC (cv) \
		255	: mg_find ((SV *)cv, PERL_MAGIC_coro) \
		256	: 0
		257
246	/* the next two functions merely cache the padlists */	258	/* the next two functions merely cache the padlists */
247	static void	259	static void
248	get_padlist (CV *cv)	260	get_padlist (CV *cv)
249	{	261	{
250	MAGIC mg = mg_find ((SV )cv, PERL_MAGIC_coro);	262	MAGIC *mg = CORO_MAGIC (cv);
		263	AV *av;
251		264
252	if (mg && AvFILLp ((AV *)mg->mg_obj) >= 0)	265	if (mg && AvFILLp ((av = (AV *)mg->mg_obj)) >= 0)
253	CvPADLIST (cv) = (AV )av_pop ((AV )mg->mg_obj);	266	CvPADLIST (cv) = (AV *)AvARRAY (av)[AvFILLp (av)--];
254	else	267	else
255	{	268	{
256	#if 0	269	#if PREFER_PERL_FUNCTIONS
257	/* this is probably cleaner, but also slower? */	270	/* this is probably cleaner, but also slower? */
258	CV *cp = Perl_cv_clone (cv);	271	CV *cp = Perl_cv_clone (cv);
259	CvPADLIST (cv) = CvPADLIST (cp);	272	CvPADLIST (cv) = CvPADLIST (cp);
260	CvPADLIST (cp) = 0;	273	CvPADLIST (cp) = 0;
261	SvREFCNT_dec (cp);	274	SvREFCNT_dec (cp);
…		…
266	}	279	}
267		280
268	static void	281	static void
269	put_padlist (CV *cv)	282	put_padlist (CV *cv)
270	{	283	{
271	MAGIC mg = mg_find ((SV )cv, PERL_MAGIC_coro);	284	MAGIC *mg = CORO_MAGIC (cv);
		285	AV *av;
272		286
273	if (!mg)	287	if (!mg)
274	{	288	{
275	sv_magic ((SV *)cv, 0, PERL_MAGIC_coro, 0, 0);	289	sv_magic ((SV *)cv, 0, PERL_MAGIC_coro, 0, 0);
276	mg = mg_find ((SV *)cv, PERL_MAGIC_coro);	290	mg = mg_find ((SV *)cv, PERL_MAGIC_coro);
277	mg->mg_virtual = &vtbl_coro;	291	mg->mg_virtual = &vtbl_coro;
278	mg->mg_obj = (SV *)newAV ();	292	mg->mg_obj = (SV *)newAV ();
279	}	293	}
280		294
281	av_push ((AV )mg->mg_obj, (SV )CvPADLIST (cv));	295	av = (AV *)mg->mg_obj;
		296
		297	if (AvFILLp (av) >= AvMAX (av))
		298	av_extend (av, AvMAX (av) + 1);
		299
		300	AvARRAY (av)[++AvFILLp (av)] = (SV *)CvPADLIST (cv);
282	}	301	}
283		302
284	#define SB do {	303	#define SB do {
285	#define SE } while (0)	304	#define SE } while (0)
286		305
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	306	#define REPLACE_SV(sv,val) SB SvREFCNT_dec (sv); (sv) = (val); (val) = 0; SE
291		307
292	static void	308	static void
293	load_state(Coro__State c)	309	load_perl (Coro__State c)
294	{	310	{
295	PL_dowarn = c->dowarn;	311	#define VAR(name,type) PL_ ## name = c->name;
296	PL_in_eval = c->in_eval;	312	# include "state.h"
297		313	#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		314
329	if (c->defav) REPLACE_SV (GvAV (PL_defgv), c->defav);	315	if (c->defav) REPLACE_SV (GvAV (PL_defgv), c->defav);
330	if (c->defsv) REPLACE_SV (DEFSV , c->defsv);	316	if (c->defsv) REPLACE_SV (DEFSV , c->defsv);
331	if (c->errsv) REPLACE_SV (ERRSV , c->errsv);	317	if (c->errsv) REPLACE_SV (ERRSV , c->errsv);
		318	if (c->irssv)
		319	{
		320	if (c->irssv == PL_rs \|\| sv_eq (PL_rs, c->irssv))
		321	SvREFCNT_dec (c->irssv);
		322	else
		323	{
		324	REPLACE_SV (PL_rs, c->irssv);
		325	if (!c->irssv_sv) c->irssv_sv = get_sv ("/", 0);
		326	sv_setsv (c->irssv_sv, PL_rs);
		327	}
		328	}
332		329
333	{	330	{
334	dSP;	331	dSP;
335	CV *cv;	332	CV *cv;
336		333
337	/* now do the ugly restore mess */	334	/* now do the ugly restore mess */
338	while ((cv = (CV *)POPs))	335	while ((cv = (CV *)POPs))
339	{	336	{
340	AV padlist = (AV )POPs;
341
342	if (padlist)
343	{
344	put_padlist (cv); /* mark this padlist as available */	337	put_padlist (cv); /* mark this padlist as available */
345	CvPADLIST(cv) = padlist;	338	CvDEPTH (cv) = PTR2IV (POPs);
346	}	339	CvPADLIST (cv) = (AV *)POPs;
347
348	++CvDEPTH(cv);
349	}	340	}
350		341
351	PUTBACK;	342	PUTBACK;
352	}	343	}
353	}	344	}
354		345
355	static void	346	static void
356	save_state(Coro__State c, int flags)	347	save_perl (Coro__State c)
357	{	348	{
358	{	349	{
359	dSP;	350	dSP;
360	I32 cxix = cxstack_ix;	351	I32 cxix = cxstack_ix;
361	PERL_CONTEXT *ccstk = cxstack;	352	PERL_CONTEXT *ccstk = cxstack;
…		…
364	/*	355	/*
365	* the worst thing you can imagine happens first - we have to save	356	* the worst thing you can imagine happens first - we have to save
366	* (and reinitialize) all cv's in the whole callchain :(	357	* (and reinitialize) all cv's in the whole callchain :(
367	*/	358	*/
368		359
		360	EXTEND (SP, 3 + 1);
369	PUSHs (Nullsv);	361	PUSHs (Nullsv);
370	/* this loop was inspired by pp_caller */	362	/* this loop was inspired by pp_caller */
371	for (;;)	363	for (;;)
372	{	364	{
373	while (cxix >= 0)	365	while (cxix >= 0)
374	{	366	{
375	PERL_CONTEXT *cx = &ccstk[cxix--];	367	PERL_CONTEXT *cx = &ccstk[cxix--];
376		368
377	if (CxTYPE(cx) == CXt_SUB)	369	if (CxTYPE (cx) == CXt_SUB)
378	{	370	{
379	CV *cv = cx->blk_sub.cv;	371	CV *cv = cx->blk_sub.cv;
		372
380	if (CvDEPTH(cv))	373	if (CvDEPTH (cv))
381	{	374	{
382	EXTEND (SP, CvDEPTH(cv)*2);	375	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));	376	PUSHs ((SV *)CvPADLIST (cv));
		377	PUSHs (INT2PTR (SV *, CvDEPTH (cv)));
392	PUSHs ((SV *)cv);	378	PUSHs ((SV *)cv);
393		379
		380	CvDEPTH (cv) = 0;
394	get_padlist (cv);	381	get_padlist (cv);
395	}	382	}
396	}	383	}
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	}	384	}
406		385
407	if (top_si->si_type == PERLSI_MAIN)	386	if (top_si->si_type == PERLSI_MAIN)
408	break;	387	break;
409		388
…		…
413	}	392	}
414		393
415	PUTBACK;	394	PUTBACK;
416	}	395	}
417		396
418	c->defav = flags & TRANSFER_SAVE_DEFAV ? (AV *)SvREFCNT_inc (GvAV (PL_defgv)) : 0;	397	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;	398	c->defsv = c->save & CORO_SAVE_DEFSV ? SvREFCNT_inc (DEFSV) : 0;
420	c->errsv = flags & TRANSFER_SAVE_ERRSV ? SvREFCNT_inc (ERRSV) : 0;	399	c->errsv = c->save & CORO_SAVE_ERRSV ? SvREFCNT_inc (ERRSV) : 0;
		400	c->irssv = c->save & CORO_SAVE_IRSSV ? SvREFCNT_inc (PL_rs) : 0;
421		401
422	c->dowarn = PL_dowarn;	402	#define VAR(name,type)c->name = PL_ ## name;
423	c->in_eval = PL_in_eval;	403	# include "state.h"
424		404	#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	}	405	}
456		406
457	/*	407	/*
458	* allocate various perl stacks. This is an exact copy	408	* allocate various perl stacks. This is an exact copy
459	* of perl.c:init_stacks, except that it uses less memory	409	* of perl.c:init_stacks, except that it uses less memory
460	* on the (sometimes correct) assumption that coroutines do	410	* on the (sometimes correct) assumption that coroutines do
461	* not usually need a lot of stackspace.	411	* not usually need a lot of stackspace.
462	*/	412	*/
		413	#if PREFER_PERL_FUNCTIONS
		414	# define coro_init_stacks init_stacks
		415	#else
463	static void	416	static void
464	coro_init_stacks ()	417	coro_init_stacks ()
465	{	418	{
466	PL_curstackinfo = new_stackinfo(96, 1024/sizeof(PERL_CONTEXT) - 1);	419	PL_curstackinfo = new_stackinfo(128, 1024/sizeof(PERL_CONTEXT));
467	PL_curstackinfo->si_type = PERLSI_MAIN;	420	PL_curstackinfo->si_type = PERLSI_MAIN;
468	PL_curstack = PL_curstackinfo->si_stack;	421	PL_curstack = PL_curstackinfo->si_stack;
469	PL_mainstack = PL_curstack; /* remember in case we switch stacks */	422	PL_mainstack = PL_curstack; /* remember in case we switch stacks */
470		423
471	PL_stack_base = AvARRAY(PL_curstack);	424	PL_stack_base = AvARRAY(PL_curstack);
472	PL_stack_sp = PL_stack_base;	425	PL_stack_sp = PL_stack_base;
473	PL_stack_max = PL_stack_base + AvMAX(PL_curstack);	426	PL_stack_max = PL_stack_base + AvMAX(PL_curstack);
474		427
475	New(50,PL_tmps_stack,96,SV*);	428	New(50,PL_tmps_stack,128,SV*);
476	PL_tmps_floor = -1;	429	PL_tmps_floor = -1;
477	PL_tmps_ix = -1;	430	PL_tmps_ix = -1;
478	PL_tmps_max = 96;	431	PL_tmps_max = 128;
479		432
480	New(54,PL_markstack,16,I32);	433	New(54,PL_markstack,32,I32);
481	PL_markstack_ptr = PL_markstack;	434	PL_markstack_ptr = PL_markstack;
482	PL_markstack_max = PL_markstack + 16;	435	PL_markstack_max = PL_markstack + 32;
483		436
484	#ifdef SET_MARK_OFFSET	437	#ifdef SET_MARK_OFFSET
485	SET_MARK_OFFSET;	438	SET_MARK_OFFSET;
486	#endif	439	#endif
487		440
488	New(54,PL_scopestack,16,I32);	441	New(54,PL_scopestack,32,I32);
489	PL_scopestack_ix = 0;	442	PL_scopestack_ix = 0;
490	PL_scopestack_max = 16;	443	PL_scopestack_max = 32;
491		444
492	New(54,PL_savestack,96,ANY);	445	New(54,PL_savestack,64,ANY);
493	PL_savestack_ix = 0;	446	PL_savestack_ix = 0;
494	PL_savestack_max = 96;	447	PL_savestack_max = 64;
495		448
496	#if !PERL_VERSION_ATLEAST (5,9,0)	449	#if !PERL_VERSION_ATLEAST (5,9,0)
497	New(54,PL_retstack,8,OP*);	450	New(54,PL_retstack,16,OP*);
498	PL_retstack_ix = 0;	451	PL_retstack_ix = 0;
499	PL_retstack_max = 8;	452	PL_retstack_max = 16;
500	#endif	453	#endif
501	}	454	}
		455	#endif
502		456
503	/*	457	/*
504	* destroy the stacks, the callchain etc...	458	* destroy the stacks, the callchain etc...
505	*/	459	*/
506	static void	460	static void
507	coro_destroy_stacks ()	461	coro_destroy_stacks ()
508	{	462	{
509	if (!IN_DESTRUCT)	463	if (!IN_DESTRUCT)
510	{	464	{
511	/* is this ugly, I ask? */	465	/* restore all saved variables and stuff */
512	LEAVE_SCOPE (0);	466	LEAVE_SCOPE (0);
		467	assert (PL_tmps_floor == -1);
513		468
514	/* sure it is, but more important: is it correct?? :/ */	469	/* free all temporaries */
515	FREETMPS;	470	FREETMPS;
		471	assert (PL_tmps_ix == -1);
516		472
517	/POPSTACK_TO (PL_mainstack);//D//use/	473	POPSTACK_TO (PL_mainstack);
518	}	474	}
519		475
520	while (PL_curstackinfo->si_next)	476	while (PL_curstackinfo->si_next)
521	PL_curstackinfo = PL_curstackinfo->si_next;	477	PL_curstackinfo = PL_curstackinfo->si_next;
522		478
523	while (PL_curstackinfo)	479	while (PL_curstackinfo)
524	{	480	{
525	PERL_SI *p = PL_curstackinfo->si_prev;	481	PERL_SI *p = PL_curstackinfo->si_prev;
526		482
527	{ /D//remove/
528	dSP;
529	SWITCHSTACK (PL_curstack, PL_curstackinfo->si_stack);
530	PUTBACK; /* possibly superfluous */
531	}
532
533	if (!IN_DESTRUCT)	483	if (!IN_DESTRUCT)
534	{
535	dounwind (-1);/D//remove/
536	SvREFCNT_dec (PL_curstackinfo->si_stack);	484	SvREFCNT_dec (PL_curstackinfo->si_stack);
537	}
538		485
539	Safefree (PL_curstackinfo->si_cxstack);	486	Safefree (PL_curstackinfo->si_cxstack);
540	Safefree (PL_curstackinfo);	487	Safefree (PL_curstackinfo);
541	PL_curstackinfo = p;	488	PL_curstackinfo = p;
542	}	489	}
…		…
557	* emulate part of the perl startup here.	504	* emulate part of the perl startup here.
558	*/	505	*/
559		506
560	coro_init_stacks ();	507	coro_init_stacks ();
561		508
562	PL_curcop = 0;	509	PL_curcop = &PL_compiling;
563	PL_in_eval = 0;	510	PL_in_eval = EVAL_NULL;
564	PL_curpm = 0;	511	PL_curpm = 0;
		512	PL_localizing = 0;
		513	PL_dirty = 0;
		514	PL_restartop = 0;
565		515
566	{	516	{
567	dSP;	517	dSP;
568	LOGOP myop;	518	LOGOP myop;
569		519
570	/* I have no idea why this is needed, but it is */
571	PUSHMARK (SP);
572
573	SvREFCNT_dec (GvAV (PL_defgv));	520	SvREFCNT_dec (GvAV (PL_defgv));
574	GvAV (PL_defgv) = coro->args; coro->args = 0;	521	GvAV (PL_defgv) = coro->args; coro->args = 0;
575		522
576	Zero (&myop, 1, LOGOP);	523	Zero (&myop, 1, LOGOP);
577	myop.op_next = Nullop;	524	myop.op_next = Nullop;
578	myop.op_flags = OPf_WANT_VOID;	525	myop.op_flags = OPf_WANT_VOID;
579		526
		527	PUSHMARK (SP);
		528	XPUSHs ((SV *)get_cv ("Coro::State::_coro_init", FALSE));
		529	PUTBACK;
580	PL_op = (OP *)&myop;	530	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);	531	PL_op = PL_ppaddr[OP_ENTERSUB](aTHX);
586	SPAGAIN;	532	SPAGAIN;
587
588	ENTER; /* necessary e.g. for dounwind */
589	}	533	}
		534
		535	ENTER; /* necessary e.g. for dounwind */
590	}	536	}
591		537
592	static void	538	static void
593	free_coro_mortal ()	539	free_coro_mortal ()
594	{	540	{
…		…
597	SvREFCNT_dec (coro_mortal);	543	SvREFCNT_dec (coro_mortal);
598	coro_mortal = 0;	544	coro_mortal = 0;
599	}	545	}
600	}	546	}
601		547
		548	/* inject a fake call to Coro::State::_cctx_init into the execution */
602	static void NOINLINE	549	static void NOINLINE
603	prepare_cctx (coro_cctx *cctx)	550	prepare_cctx (coro_cctx *cctx)
604	{	551	{
605	dSP;	552	dSP;
606	LOGOP myop;	553	LOGOP myop;
607		554
608	Zero (&myop, 1, LOGOP);	555	Zero (&myop, 1, LOGOP);
609	myop.op_next = PL_op;	556	myop.op_next = PL_op;
610	myop.op_flags = OPf_WANT_VOID;	557	myop.op_flags = OPf_WANT_VOID \| OPf_STACKED;
611
612	sv_setiv (get_sv ("Coro::State::cctx", FALSE), PTR2IV (cctx));
613		558
614	PUSHMARK (SP);	559	PUSHMARK (SP);
		560	EXTEND (SP, 2);
		561	PUSHs (sv_2mortal (newSViv (PTR2IV (cctx))));
615	XPUSHs ((SV *)get_cv ("Coro::State::cctx_init", FALSE));	562	PUSHs ((SV *)get_cv ("Coro::State::_cctx_init", FALSE));
616	PUTBACK;	563	PUTBACK;
		564	PL_op = (OP *)&myop;
617	PL_restartop = PL_ppaddr[OP_ENTERSUB](aTHX);	565	PL_op = PL_ppaddr[OP_ENTERSUB](aTHX);
618	SPAGAIN;	566	SPAGAIN;
619	}	567	}
620		568
621	static void	569	static void
622	coro_run (void *arg)	570	coro_run (void *arg)
623	{	571	{
624	/* coro_run is the alternative epilogue of transfer() */	572	/* coro_run is the alternative tail of transfer(), so unlock here. */
625	UNLOCK;	573	UNLOCK;
626		574
627	/*	575	/*
628	* this is a _very_ stripped down perl interpreter ;)	576	* this is a _very_ stripped down perl interpreter ;)
629	*/	577	*/
630	PL_top_env = &PL_start_env;	578	PL_top_env = &PL_start_env;
		579
631	/* inject call to cctx_init */	580	/* inject call to cctx_init */
632	prepare_cctx ((coro_cctx *)arg);	581	prepare_cctx ((coro_cctx *)arg);
633		582
634	/* somebody will hit me for both perl_run and PL_restartop */	583	/* somebody will hit me for both perl_run and PL_restartop */
		584	PL_restartop = PL_op;
635	perl_run (PL_curinterp);	585	perl_run (PL_curinterp);
636		586
637	fputs ("FATAL: C coroutine fell over the edge of the world, aborting. Did you call exit in a coroutine?\n", stderr);	587	fputs ("FATAL: C coroutine fell over the edge of the world, aborting. Did you call exit in a coroutine?\n", stderr);
638	abort ();	588	abort ();
639	}	589	}
…		…
641	static coro_cctx *	591	static coro_cctx *
642	cctx_new ()	592	cctx_new ()
643	{	593	{
644	coro_cctx *cctx;	594	coro_cctx *cctx;
645		595
		596	++cctx_count;
		597
646	New (0, cctx, 1, coro_cctx);	598	Newz (0, cctx, 1, coro_cctx);
647		599
648	#if HAVE_MMAP	600	#if HAVE_MMAP
649		601
650	cctx->ssize = ((STACKSIZE * sizeof (long) + PAGESIZE - 1) / PAGESIZE + STACKGUARD) * PAGESIZE;	602	cctx->ssize = ((STACKSIZE * sizeof (long) + PAGESIZE - 1) / PAGESIZE + STACKGUARD) * PAGESIZE;
651	/* mmap suppsedly does allocate-on-write for us */	603	/* 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);	604	cctx->sptr = mmap (0, cctx->ssize, PROT_EXEC\|PROT_READ\|PROT_WRITE, MAP_PRIVATE\|MAP_ANONYMOUS, 0, 0);
653		605
654	if (cctx->sptr == (void *)-1)	606	if (cctx->sptr == (void *)-1)
655	{	607	{
656	perror ("FATAL: unable to mmap stack for coroutine");	608	perror ("FATAL: unable to mmap stack for coroutine");
…		…
685		637
686	return cctx;	638	return cctx;
687	}	639	}
688		640
689	static void	641	static void
690	cctx_free (coro_cctx *cctx)	642	cctx_destroy (coro_cctx *cctx)
691	{	643	{
692	if (!cctx)	644	if (!cctx)
693	return;	645	return;
		646
		647	--cctx_count;
694		648
695	#if USE_VALGRIND	649	#if USE_VALGRIND
696	VALGRIND_STACK_DEREGISTER (cctx->valgrind_id);	650	VALGRIND_STACK_DEREGISTER (cctx->valgrind_id);
697	#endif	651	#endif
698		652
…		…
703	#endif	657	#endif
704		658
705	Safefree (cctx);	659	Safefree (cctx);
706	}	660	}
707		661
708	static coro_cctx *cctx_first;
709	static int cctx_count, cctx_idle;
710
711	static coro_cctx *	662	static coro_cctx *
712	cctx_get ()	663	cctx_get ()
713	{	664	{
714	coro_cctx *cctx;	665	coro_cctx *cctx;
715		666
716	if (cctx_first)	667	if (cctx_first)
717	{	668	{
718	--cctx_idle;
719	cctx = cctx_first;	669	cctx = cctx_first;
720	cctx_first = cctx->next;	670	cctx_first = cctx->next;
		671	--cctx_idle;
721	}	672	}
722	else	673	else
723	{	674	{
724	++cctx_count;
725	cctx = cctx_new ();	675	cctx = cctx_new ();
726	PL_op = PL_op->op_next;	676	PL_op = PL_op->op_next;
727	}	677	}
728		678
729	return cctx;	679	return cctx;
730	}	680	}
731		681
732	static void	682	static void
733	cctx_put (coro_cctx *cctx)	683	cctx_put (coro_cctx *cctx)
734	{	684	{
		685	/* free another cctx if overlimit */
		686	if (cctx_idle >= MAX_IDLE_CCTX)
		687	{
		688	coro_cctx *first = cctx_first;
		689	cctx_first = first->next;
		690	--cctx_idle;
		691
		692	assert (!first->inuse);
		693	cctx_destroy (first);
		694	}
		695
735	++cctx_idle;	696	++cctx_idle;
736	cctx->next = cctx_first;	697	cctx->next = cctx_first;
737	cctx_first = cctx;	698	cctx_first = cctx;
738	}	699	}
739		700
740	/* never call directly, always through the coro_state_transfer global variable */	701	/* never call directly, always through the coro_state_transfer global variable */
741	static void NOINLINE	702	static void NOINLINE
742	transfer (struct coro prev, struct coro next, int flags)	703	transfer (struct coro prev, struct coro next)
743	{	704	{
744	dSTACKLEVEL;	705	dSTACKLEVEL;
745		706
746	/* sometimes transfer is only called to set idle_sp */	707	/* sometimes transfer is only called to set idle_sp */
747	if (flags == TRANSFER_SET_STACKLEVEL)	708	if (!next)
		709	{
748	((coro_cctx *)prev)->idle_sp = STACKLEVEL;	710	((coro_cctx *)prev)->idle_sp = STACKLEVEL;
		711	assert (((coro_cctx )prev)->top_env = PL_top_env); / just for the side effetc when assert is enabled */
		712	}
749	else if (prev != next)	713	else if (prev != next)
750	{	714	{
751	coro_cctx *prev__cctx;	715	coro_cctx *prev__cctx;
752		716
		717	if (prev->flags & CF_NEW)
		718	{
		719	/* create a new empty context */
		720	Newz (0, prev->cctx, 1, coro_cctx);
		721	prev->cctx->inuse = 1;
		722	prev->flags &= ~CF_NEW;
		723	prev->flags \|= CF_RUNNING;
		724	}
		725
		726	/TODO: must not croak here /
		727	if (!prev->flags & CF_RUNNING)
		728	croak ("Coro::State::transfer called with non-running prev Coro::State, but can only transfer from running states");
		729
		730	if (next->flags & CF_RUNNING)
		731	croak ("Coro::State::transfer called with running next Coro::State, but can only transfer to inactive states");
		732
		733	prev->flags &= ~CF_RUNNING;
		734	next->flags \|= CF_RUNNING;
		735
753	LOCK;	736	LOCK;
754		737
755	if (next->mainstack)	738	if (next->flags & CF_NEW)
756	{	739	{
757	/* coroutine already started */	740	/* need to start coroutine */
758	SAVE (prev, flags);	741	next->flags &= ~CF_NEW;
759	LOAD (next);	742	/* first get rid of the old state */
		743	save_perl (prev);
		744	/* setup coroutine call */
		745	setup_coro (next);
		746	/* need a new stack */
		747	assert (!next->cctx);
760	}	748	}
761	else	749	else
762	{	750	{
763	/* need to start coroutine */	751	/* coroutine already started */
764	/* first get rid of the old state */	752	save_perl (prev);
765	SAVE (prev, -1);	753	load_perl (next);
766	/* setup coroutine call */
767	setup_coro (next);
768	/* need a stack */
769	next->cctx = 0;
770	}	754	}
771
772	if (!prev->cctx)
773	/* create a new empty context */
774	Newz (0, prev->cctx, 1, coro_cctx);
775		755
776	prev__cctx = prev->cctx;	756	prev__cctx = prev->cctx;
777		757
778	/* possibly "free" the cctx */	758	/* possibly "free" the cctx */
779	if (prev__cctx->idle_sp == STACKLEVEL)	759	if (prev__cctx->idle_sp == STACKLEVEL)
780	{	760	{
		761	/* I assume that STACKLEVEL is a stronger indicator than PL_top_env changes */
		762	assert (PL_top_env == prev__cctx->top_env);
		763
		764	prev->cctx = 0;
		765
781	cctx_put (prev__cctx);	766	cctx_put (prev__cctx);
782	prev->cctx = 0;	767	prev__cctx->inuse = 0;
783	}	768	}
784		769
785	if (!next->cctx)	770	if (!next->cctx)
		771	{
786	next->cctx = cctx_get ();	772	next->cctx = cctx_get ();
		773	assert (!next->cctx->inuse);
		774	next->cctx->inuse = 1;
		775	}
787		776
788	if (prev__cctx != next->cctx)	777	if (prev__cctx != next->cctx)
789	{	778	{
790	prev__cctx->top_env = PL_top_env;	779	prev__cctx->top_env = PL_top_env;
791	PL_top_env = next->cctx->top_env;	780	PL_top_env = next->cctx->top_env;
…		…
799	}	788	}
800		789
801	struct transfer_args	790	struct transfer_args
802	{	791	{
803	struct coro prev, next;	792	struct coro prev, next;
804	int flags;
805	};	793	};
806		794
807	#define TRANSFER(ta) transfer ((ta).prev, (ta).next, (ta).flags)	795	#define TRANSFER(ta) transfer ((ta).prev, (ta).next)
808		796
809	static void	797	static void
810	coro_state_destroy (struct coro *coro)	798	coro_state_destroy (struct coro *coro)
811	{	799	{
812	if (coro->refcnt--)	800	if (coro->refcnt--)
813	return;	801	return;
814		802
815	if (coro->mainstack && coro->mainstack != main_mainstack)	803	if (coro->mainstack && coro->mainstack != main_mainstack)
816	{	804	{
817	struct coro temp;	805	struct coro temp;
		806	Zero (&temp, 1, struct coro);
		807	temp.save = CORO_SAVE_ALL;
818		808
819	SAVE ((&temp), TRANSFER_SAVE_ALL);	809	if (coro->flags & CF_RUNNING)
820	LOAD (coro);	810	croak ("FATAL: tried to destroy currently running coroutine");
		811
		812	save_perl (&temp);
		813	load_perl (coro);
821		814
822	coro_destroy_stacks ();	815	coro_destroy_stacks ();
823		816
824	LOAD ((&temp)); /* this will get rid of defsv etc.. */	817	load_perl (&temp); /* this will get rid of defsv etc.. */
825		818
826	coro->mainstack = 0;	819	coro->mainstack = 0;
827	}	820	}
828		821
829	cctx_free (coro->cctx);	822	cctx_destroy (coro->cctx);
830	SvREFCNT_dec (coro->args);	823	SvREFCNT_dec (coro->args);
831	Safefree (coro);	824	Safefree (coro);
832	}	825	}
833		826
834	static int	827	static int
…		…
884	assert (mg->mg_type == PERL_MAGIC_ext);	877	assert (mg->mg_type == PERL_MAGIC_ext);
885	return (struct coro *)mg->mg_ptr;	878	return (struct coro *)mg->mg_ptr;
886	}	879	}
887		880
888	static void	881	static void
889	prepare_transfer (struct transfer_args ta, SV prev, SV *next, int flags)	882	prepare_transfer (struct transfer_args ta, SV prev_sv, SV *next_sv)
890	{	883	{
891	ta->prev = SvSTATE (prev);	884	ta->prev = SvSTATE (prev_sv);
892	ta->next = SvSTATE (next);	885	ta->next = SvSTATE (next_sv);
893	ta->flags = flags;
894	}	886	}
895		887
896	static void	888	static void
897	api_transfer (SV prev, SV next, int flags)	889	api_transfer (SV prev_sv, SV next_sv)
898	{	890	{
899	dTHX;
900	struct transfer_args ta;	891	struct transfer_args ta;
901		892
902	prepare_transfer (&ta, prev, next, flags);	893	prepare_transfer (&ta, prev_sv, next_sv);
903	TRANSFER (ta);	894	TRANSFER (ta);
		895	}
		896
		897	static int
		898	api_save (SV *coro_sv, int new_save)
		899	{
		900	struct coro *coro = SvSTATE (coro_sv);
		901	int old_save = coro->save;
		902
		903	if (new_save >= 0)
		904	coro->save = new_save;
		905
		906	return old_save;
904	}	907	}
905		908
906	/ Coro ******************************************************************/	909	/ Coro ******************************************************************/
907		910
908	#define PRIO_MAX 3	911	#define PRIO_MAX 3
…		…
911	#define PRIO_LOW -1	914	#define PRIO_LOW -1
912	#define PRIO_IDLE -3	915	#define PRIO_IDLE -3
913	#define PRIO_MIN -4	916	#define PRIO_MIN -4
914		917
915	/* for Coro.pm */	918	/* for Coro.pm */
916	static GV coro_current, coro_idle;	919	static SV *coro_current;
917	static AV *coro_ready [PRIO_MAX-PRIO_MIN+1];	920	static AV *coro_ready [PRIO_MAX-PRIO_MIN+1];
918	static int coro_nready;	921	static int coro_nready;
919		922
920	static void	923	static void
921	coro_enq (SV *sv)	924	coro_enq (SV *coro_sv)
922	{	925	{
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);	926	av_push (coro_ready [SvSTATE (coro_sv)->prio - PRIO_MIN], coro_sv);
931	coro_nready++;	927	coro_nready++;
932	}	928	}
933		929
934	static SV *	930	static SV *
935	coro_deq (int min_prio)	931	coro_deq (int min_prio)
…		…
948	}	944	}
949		945
950	return 0;	946	return 0;
951	}	947	}
952		948
953	static void	949	static int
954	api_ready (SV *coro)	950	api_ready (SV *coro_sv)
955	{	951	{
956	dTHX;	952	struct coro *coro;
957		953
958	if (SvROK (coro))	954	if (SvROK (coro_sv))
959	coro = SvRV (coro);	955	coro_sv = SvRV (coro_sv);
		956
		957	coro = SvSTATE (coro_sv);
		958
		959	if (coro->flags & CF_READY)
		960	return 0;
		961
		962	#if 0 /* this is actually harmless */
		963	if (coro->flags & CF_RUNNING)
		964	croak ("Coro::ready called on currently running coroutine");
		965	#endif
		966
		967	coro->flags \|= CF_READY;
960		968
961	LOCK;	969	LOCK;
962	coro_enq (SvREFCNT_inc (coro));	970	coro_enq (SvREFCNT_inc (coro_sv));
963	UNLOCK;	971	UNLOCK;
		972
		973	return 1;
		974	}
		975
		976	static int
		977	api_is_ready (SV *coro_sv)
		978	{
		979	return !!SvSTATE (coro_sv)->flags & CF_READY;
964	}	980	}
965		981
966	static void	982	static void
967	prepare_schedule (struct transfer_args *ta)	983	prepare_schedule (struct transfer_args *ta)
968	{	984	{
969	SV current, prev, *next;	985	SV prev, next;
970
971	current = GvSV (coro_current);
972		986
973	for (;;)	987	for (;;)
974	{	988	{
975	LOCK;	989	LOCK;
976	next = coro_deq (PRIO_MIN);	990	next = coro_deq (PRIO_MIN);
…		…
985	ENTER;	999	ENTER;
986	SAVETMPS;	1000	SAVETMPS;
987		1001
988	PUSHMARK (SP);	1002	PUSHMARK (SP);
989	PUTBACK;	1003	PUTBACK;
990	call_sv (GvSV (coro_idle), G_DISCARD);	1004	call_sv (get_sv ("Coro::idle", FALSE), G_DISCARD);
991		1005
992	FREETMPS;	1006	FREETMPS;
993	LEAVE;	1007	LEAVE;
994	}	1008	}
995	}	1009	}
996		1010
997	prev = SvRV (current);	1011	prev = SvRV (coro_current);
998	SvRV (current) = next;	1012	SvRV_set (coro_current, next);
999		1013
1000	/* free this only after the transfer */	1014	/* free this only after the transfer */
1001	LOCK;	1015	LOCK;
1002	free_coro_mortal ();	1016	free_coro_mortal ();
1003	UNLOCK;	1017	UNLOCK;
1004	coro_mortal = prev;	1018	coro_mortal = prev;
1005		1019
		1020	assert (!SvROK(prev));//D
		1021	assert (!SvROK(next));//D
		1022
1006	ta->prev = SvSTATE (prev);	1023	ta->prev = SvSTATE (prev);
1007	ta->next = SvSTATE (next);	1024	ta->next = SvSTATE (next);
1008	ta->flags = TRANSFER_SAVE_ALL;	1025
		1026	assert (ta->next->flags & CF_READY);
		1027	ta->next->flags &= ~CF_READY;
1009	}	1028	}
1010		1029
1011	static void	1030	static void
1012	prepare_cede (struct transfer_args *ta)	1031	prepare_cede (struct transfer_args *ta)
1013	{	1032	{
1014	LOCK;	1033	api_ready (coro_current);
1015	coro_enq (SvREFCNT_inc (SvRV (GvSV (coro_current))));
1016	UNLOCK;
1017		1034
1018	prepare_schedule (ta);	1035	prepare_schedule (ta);
1019	}	1036	}
1020		1037
1021	static void	1038	static void
1022	api_schedule (void)	1039	api_schedule (void)
1023	{	1040	{
1024	dTHX;
1025	struct transfer_args ta;	1041	struct transfer_args ta;
1026		1042
1027	prepare_schedule (&ta);	1043	prepare_schedule (&ta);
1028	TRANSFER (ta);	1044	TRANSFER (ta);
1029	}	1045	}
1030		1046
1031	static void	1047	static void
1032	api_cede (void)	1048	api_cede (void)
1033	{	1049	{
1034	dTHX;
1035	struct transfer_args ta;	1050	struct transfer_args ta;
1036		1051
1037	prepare_cede (&ta);	1052	prepare_cede (&ta);
1038	TRANSFER (ta);	1053	TRANSFER (ta);
1039	}	1054	}
…		…
1049	#endif	1064	#endif
1050	BOOT_PAGESIZE;	1065	BOOT_PAGESIZE;
1051		1066
1052	coro_state_stash = gv_stashpv ("Coro::State", TRUE);	1067	coro_state_stash = gv_stashpv ("Coro::State", TRUE);
1053		1068
1054	newCONSTSUB (coro_state_stash, "SAVE_DEFAV", newSViv (TRANSFER_SAVE_DEFAV));	1069	newCONSTSUB (coro_state_stash, "SAVE_DEFAV", newSViv (CORO_SAVE_DEFAV));
1055	newCONSTSUB (coro_state_stash, "SAVE_DEFSV", newSViv (TRANSFER_SAVE_DEFSV));	1070	newCONSTSUB (coro_state_stash, "SAVE_DEFSV", newSViv (CORO_SAVE_DEFSV));
1056	newCONSTSUB (coro_state_stash, "SAVE_ERRSV", newSViv (TRANSFER_SAVE_ERRSV));	1071	newCONSTSUB (coro_state_stash, "SAVE_ERRSV", newSViv (CORO_SAVE_ERRSV));
		1072	newCONSTSUB (coro_state_stash, "SAVE_IRSSV", newSViv (CORO_SAVE_IRSSV));
		1073	newCONSTSUB (coro_state_stash, "SAVE_ALL", newSViv (CORO_SAVE_ALL));
1057		1074
1058	main_mainstack = PL_mainstack;	1075	main_mainstack = PL_mainstack;
1059		1076
1060	coroapi.ver = CORO_API_VERSION;	1077	coroapi.ver = CORO_API_VERSION;
1061	coroapi.transfer = api_transfer;	1078	coroapi.transfer = api_transfer;
…		…
1071	HV *hv;	1088	HV *hv;
1072	int i;	1089	int i;
1073		1090
1074	Newz (0, coro, 1, struct coro);	1091	Newz (0, coro, 1, struct coro);
1075	coro->args = newAV ();	1092	coro->args = newAV ();
		1093	coro->save = CORO_SAVE_ALL;
		1094	coro->flags = CF_NEW;
1076		1095
1077	hv = newHV ();	1096	hv = newHV ();
1078	sv_magicext ((SV )hv, 0, PERL_MAGIC_ext, &coro_state_vtbl, (char )coro, 0)->mg_flags \|= MGf_DUP;	1097	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));	1098	RETVAL = sv_bless (newRV_noinc ((SV *)hv), gv_stashpv (klass, 1));
1080		1099
1081	for (i = 1; i < items; i++)	1100	for (i = 1; i < items; i++)
1082	av_push (coro->args, newSVsv (ST (i)));	1101	av_push (coro->args, newSVsv (ST (i)));
1083	}	1102	}
1084	OUTPUT:	1103	OUTPUT:
		1104	RETVAL
		1105
		1106	int
		1107	save (SV *coro, int new_save = -1)
		1108	CODE:
		1109	RETVAL = api_save (coro, new_save);
		1110	OUTPUT:
1085	RETVAL	1111	RETVAL
1086		1112
1087	void	1113	void
1088	_set_stacklevel (...)	1114	_set_stacklevel (...)
1089	ALIAS:	1115	ALIAS:
1090	Coro::State::transfer = 1	1116	Coro::State::transfer = 1
1091	Coro::schedule = 2	1117	Coro::schedule = 2
1092	Coro::cede = 3	1118	Coro::cede = 3
1093	Coro::Cont::yield = 4
1094	CODE:	1119	CODE:
1095	{	1120	{
1096	struct transfer_args ta;	1121	struct transfer_args ta;
1097		1122
1098	switch (ix)	1123	switch (ix)
1099	{	1124	{
1100	case 0:	1125	case 0:
1101	ta.prev = (struct coro )INT2PTR (coro_cctx , SvIV (ST (0)));	1126	ta.prev = (struct coro )INT2PTR (coro_cctx , SvIV (ST (0)));
1102	ta.next = 0;	1127	ta.next = 0;
1103	ta.flags = TRANSFER_SET_STACKLEVEL;
1104	break;	1128	break;
1105		1129
1106	case 1:	1130	case 1:
1107	if (items != 3)	1131	if (items != 2)
1108	croak ("Coro::State::transfer(prev,next,flags) expects three arguments, not %d", items);	1132	croak ("Coro::State::transfer (prev,next) expects two arguments, not %d", items);
1109		1133
1110	prepare_transfer (&ta, ST (0), ST (1), SvIV (ST (2)));	1134	prepare_transfer (&ta, ST (0), ST (1));
1111	break;	1135	break;
1112		1136
1113	case 2:	1137	case 2:
1114	prepare_schedule (&ta);	1138	prepare_schedule (&ta);
1115	break;	1139	break;
1116		1140
1117	case 3:	1141	case 3:
1118	prepare_cede (&ta);	1142	prepare_cede (&ta);
1119	break;	1143	break;
1120
1121	case 4:
1122	{
1123	SV *yieldstack;
1124	SV *sv;
1125	AV *defav = GvAV (PL_defgv);
1126
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;
1146
1147	}	1144	}
1148		1145
1149	TRANSFER (ta);	1146	TRANSFER (ta);
1150	}	1147	}
1151		1148
…		…
1195	newCONSTSUB (coro_stash, "PRIO_NORMAL", newSViv (PRIO_NORMAL));	1192	newCONSTSUB (coro_stash, "PRIO_NORMAL", newSViv (PRIO_NORMAL));
1196	newCONSTSUB (coro_stash, "PRIO_LOW", newSViv (PRIO_LOW));	1193	newCONSTSUB (coro_stash, "PRIO_LOW", newSViv (PRIO_LOW));
1197	newCONSTSUB (coro_stash, "PRIO_IDLE", newSViv (PRIO_IDLE));	1194	newCONSTSUB (coro_stash, "PRIO_IDLE", newSViv (PRIO_IDLE));
1198	newCONSTSUB (coro_stash, "PRIO_MIN", newSViv (PRIO_MIN));	1195	newCONSTSUB (coro_stash, "PRIO_MIN", newSViv (PRIO_MIN));
1199		1196
1200	coro_current = gv_fetchpv ("Coro::current", TRUE, SVt_PV);	1197	coro_current = get_sv ("Coro::current", FALSE);
1201	coro_idle = gv_fetchpv ("Coro::idle" , TRUE, SVt_PV);	1198	SvREADONLY_on (coro_current);
1202		1199
1203	for (i = PRIO_MAX - PRIO_MIN + 1; i--; )	1200	for (i = PRIO_MAX - PRIO_MIN + 1; i--; )
1204	coro_ready[i] = newAV ();	1201	coro_ready[i] = newAV ();
1205		1202
1206	{	1203	{
1207	SV *sv = perl_get_sv("Coro::API", 1);	1204	SV *sv = perl_get_sv("Coro::API", 1);
1208		1205
1209	coroapi.schedule = api_schedule;	1206	coroapi.schedule = api_schedule;
		1207	coroapi.save = api_save;
1210	coroapi.cede = api_cede;	1208	coroapi.cede = api_cede;
1211	coroapi.ready = api_ready;	1209	coroapi.ready = api_ready;
		1210	coroapi.is_ready = api_is_ready;
1212	coroapi.nready = &coro_nready;	1211	coroapi.nready = &coro_nready;
1213	coroapi.current = coro_current;	1212	coroapi.current = coro_current;
1214		1213
1215	GCoroAPI = &coroapi;	1214	GCoroAPI = &coroapi;
1216	sv_setiv (sv, (IV)&coroapi);	1215	sv_setiv (sv, (IV)&coroapi);
1217	SvREADONLY_on (sv);	1216	SvREADONLY_on (sv);
1218	}	1217	}
1219	}	1218	}
		1219
		1220	void
		1221	_set_current (SV *current)
		1222	PROTOTYPE: $
		1223	CODE:
		1224	SvREFCNT_dec (SvRV (coro_current));
		1225	SvRV_set (coro_current, SvREFCNT_inc (SvRV (current)));
1220		1226
1221	int	1227	int
1222	prio (Coro::State coro, int newprio = 0)	1228	prio (Coro::State coro, int newprio = 0)
1223	ALIAS:	1229	ALIAS:
1224	nice = 1	1230	nice = 1
…		…
1236		1242
1237	coro->prio = newprio;	1243	coro->prio = newprio;
1238	}	1244	}
1239	}	1245	}
1240		1246
1241	void	1247	SV *
1242	ready (SV *self)	1248	ready (SV *self)
1243	PROTOTYPE: $	1249	PROTOTYPE: $
1244	CODE:	1250	CODE:
1245	api_ready (self);	1251	RETVAL = boolSV (api_ready (self));
		1252	OUTPUT:
		1253	RETVAL
		1254
		1255	SV *
		1256	is_ready (SV *self)
		1257	PROTOTYPE: $
		1258	CODE:
		1259	RETVAL = boolSV (api_is_ready (self));
		1260	OUTPUT:
		1261	RETVAL
1246		1262
1247	int	1263	int
1248	nready (...)	1264	nready (...)
1249	PROTOTYPE:	1265	PROTOTYPE:
1250	CODE:	1266	CODE:
…		…
1256		1272
1257	SV *	1273	SV *
1258	_get_state ()	1274	_get_state ()
1259	CODE:	1275	CODE:
1260	{	1276	{
1261	struct {	1277	struct io_state *data;
1262	int errorno;
1263	int laststype;
1264	int laststatval;
1265	Stat_t statcache;
1266	} data;
1267		1278
		1279	RETVAL = newSV (sizeof (struct io_state));
		1280	data = (struct io_state *)SvPVX (RETVAL);
		1281	SvCUR_set (RETVAL, sizeof (struct io_state));
		1282	SvPOK_only (RETVAL);
		1283
1268	data.errorno = errno;	1284	data->errorno = errno;
1269	data.laststype = PL_laststype;	1285	data->laststype = PL_laststype;
1270	data.laststatval = PL_laststatval;	1286	data->laststatval = PL_laststatval;
1271	data.statcache = PL_statcache;	1287	data->statcache = PL_statcache;
1272
1273	RETVAL = newSVpvn ((char *)&data, sizeof data);
1274	}	1288	}
1275	OUTPUT:	1289	OUTPUT:
1276	RETVAL	1290	RETVAL
1277		1291
1278	void	1292	void
1279	_set_state (char *data_)	1293	_set_state (char *data_)
1280	PROTOTYPE: $	1294	PROTOTYPE: $
1281	CODE:	1295	CODE:
1282	{	1296	{
1283	struct {	1297	struct io_state data = (void )data_;
1284	int errorno;
1285	int laststype;
1286	int laststatval;
1287	Stat_t statcache;
1288	} data = (void )data_;
1289		1298
1290	errno = data->errorno;	1299	errno = data->errorno;
1291	PL_laststype = data->laststype;	1300	PL_laststype = data->laststype;
1292	PL_laststatval = data->laststatval;	1301	PL_laststatval = data->laststatval;
1293	PL_statcache = data->statcache;	1302	PL_statcache = data->statcache;
1294	}	1303	}
		1304

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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 1.127 by root, Tue Dec 12 13:56:45 2006 UTC

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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 1.127 by root, Tue Dec 12 13:56:45 2006 UTC