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

Comparing Coro/Coro/State.xs (file contents):
Revision 1.92 by root, Sun Nov 26 02:16:19 2006 UTC vs.
Revision 1.157 by root, Fri Sep 21 02:01:13 2007 UTC

…		…
		1	#include "libcoro/coro.c"
		2
1	#define PERL_NO_GET_CONTEXT	3	#define PERL_NO_GET_CONTEXT
2
3	#include "libcoro/coro.c"
4		4
5	#include "EXTERN.h"	5	#include "EXTERN.h"
6	#include "perl.h"	6	#include "perl.h"
7	#include "XSUB.h"	7	#include "XSUB.h"
8		8
9	#include "patchlevel.h"	9	#include "patchlevel.h"
10		10
11	#if PERL_VERSION < 6	11	#include <stdio.h>
		12	#include <errno.h>
		13	#include <assert.h>
		14
		15	#ifdef HAVE_MMAP
		16	# include <unistd.h>
		17	# include <sys/mman.h>
		18	# ifndef MAP_ANONYMOUS
		19	# ifdef MAP_ANON
		20	# define MAP_ANONYMOUS MAP_ANON
		21	# else
		22	# undef HAVE_MMAP
		23	# endif
		24	# endif
		25	# include <limits.h>
		26	# ifndef PAGESIZE
		27	# define PAGESIZE pagesize
		28	# define BOOT_PAGESIZE pagesize = sysconf (_SC_PAGESIZE)
		29	static long pagesize;
		30	# else
		31	# define BOOT_PAGESIZE (void)0
		32	# endif
		33	#else
		34	# define PAGESIZE 0
		35	# define BOOT_PAGESIZE (void)0
		36	#endif
		37
		38	#if CORO_USE_VALGRIND
		39	# include <valgrind/valgrind.h>
		40	# define REGISTER_STACK(cctx,start,end) (cctx)->valgrind_id = VALGRIND_STACK_REGISTER ((start), (end))
		41	#else
		42	# define REGISTER_STACK(cctx,start,end)
		43	#endif
		44
		45	/* the maximum number of idle cctx that will be pooled */
		46	#define MAX_IDLE_CCTX 8
		47
		48	#define PERL_VERSION_ATLEAST(a,b,c) \
		49	(PERL_REVISION > (a) \
		50	\|\| (PERL_REVISION == (a) \
		51	&& (PERL_VERSION > (b) \
		52	\|\| (PERL_VERSION == (b) && PERLSUBVERSION >= (c)))))
		53
		54	#if !PERL_VERSION_ATLEAST (5,6,0)
12	# ifndef PL_ppaddr	55	# ifndef PL_ppaddr
13	# define PL_ppaddr ppaddr	56	# define PL_ppaddr ppaddr
14	# endif	57	# endif
15	# ifndef call_sv	58	# ifndef call_sv
16	# define call_sv perl_call_sv	59	# define call_sv perl_call_sv
27	# ifndef IS_PADCONST	70	# ifndef IS_PADCONST
28	# define IS_PADCONST(v) 0	71	# define IS_PADCONST(v) 0
29	# endif	72	# endif
30	#endif	73	#endif
31		74
32	#include <stdio.h>	75	/* 5.8.7 */
33	#include <errno.h>	76	#ifndef SvRV_set
		77	# define SvRV_set(s,v) SvRV(s) = (v)
		78	#endif
34		79
35	#if !__i386 && !__x86_64 && !__powerpc && !__m68k && !__alpha && !__mips && !__sparc64	80	#if !__i386 && !__x86_64 && !__powerpc && !__m68k && !__alpha && !__mips && !__sparc64
36	# undef STACKGUARD	81	# undef CORO_STACKGUARD
37	#endif
38
39	#ifndef STACKGUARD
40	# define STACKGUARD 0
41	#endif
42
43	#ifdef HAVE_MMAP
44	# include <unistd.h>
45	# include <sys/mman.h>
46	# ifndef MAP_ANONYMOUS
47	# ifdef MAP_ANON
48	# define MAP_ANONYMOUS MAP_ANON
49	# else
50	# undef HAVE_MMAP
51	# endif
52	# endif	82	#endif
53	# include <limits.h>	83
54	# ifndef PAGESIZE	84	#ifndef CORO_STACKGUARD
55	# define PAGESIZE pagesize	85	# define CORO_STACKGUARD 0
56	# define BOOT_PAGESIZE pagesize = sysconf (_SC_PAGESIZE)
57	static long pagesize;
58	# else
59	# define BOOT_PAGESIZE
60	# endif	86	#endif
		87
		88	/* prefer perl internal functions over our own? */
		89	#ifndef CORO_PREFER_PERL_FUNCTIONS
		90	# define CORO_PREFER_PERL_FUNCTIONS 0
61	#endif	91	#endif
62		92
63	/* The next macro should declare a variable stacklevel that contains and approximation	93	/* The next macro should declare a variable stacklevel that contains and approximation
64	* to the current C stack pointer. Its property is that it changes with each call	94	* to the current C stack pointer. Its property is that it changes with each call
65	* and should be unique. */	95	* and should be unique. */
66	#define dSTACKLEVEL int stacklevel	96	#define dSTACKLEVEL int stacklevel
67	#define STACKLEVEL ((void *)&stacklevel)	97	#define STACKLEVEL ((void *)&stacklevel)
68		98
69	#define IN_DESTRUCT (PL_main_cv == Nullcv)	99	#define IN_DESTRUCT (PL_main_cv == Nullcv)
70		100
71	#define labs(l) ((l) >= 0 ? (l) : -(l))	101	#if __GNUC__ >= 3
		102	# define attribute(x) __attribute__(x)
		103	# define BARRIER __asm__ __volatile__ ("" : : : "memory")
		104	#else
		105	# define attribute(x)
		106	# define BARRIER
		107	#endif
		108
		109	#define NOINLINE attribute ((noinline))
72		110
73	#include "CoroAPI.h"	111	#include "CoroAPI.h"
74
75	#define TRANSFER_SET_STACKLEVEL 0x8bfbfbfb /* magic cookie */
76		112
77	#ifdef USE_ITHREADS	113	#ifdef USE_ITHREADS
78	static perl_mutex coro_mutex;	114	static perl_mutex coro_mutex;
79	# define LOCK do { MUTEX_LOCK (&coro_mutex); } while (0)	115	# define LOCK do { MUTEX_LOCK (&coro_mutex); } while (0)
80	# define UNLOCK do { MUTEX_UNLOCK (&coro_mutex); } while (0)	116	# define UNLOCK do { MUTEX_UNLOCK (&coro_mutex); } while (0)
81	#else	117	#else
82	# define LOCK (void)0	118	# define LOCK (void)0
83	# define UNLOCK (void)0	119	# define UNLOCK (void)0
84	#endif	120	#endif
85		121
		122	/* helper storage struct for Coro::AIO */
		123	struct io_state
		124	{
		125	int errorno;
		126	I32 laststype;
		127	int laststatval;
		128	Stat_t statcache;
		129	};
		130
		131	static size_t coro_stacksize = CORO_STACKSIZE;
86	static struct CoroAPI coroapi;	132	static struct CoroAPI coroapi;
87	static AV main_mainstack; / used to differentiate between $main and others */	133	static AV main_mainstack; / used to differentiate between $main and others */
		134	static JMPENV *main_top_env;
88	static HV coro_state_stash, coro_stash;	135	static HV coro_state_stash, coro_stash;
89	static SV coro_mortal; / will be freed after next transfer */	136	static SV coro_mortal; / will be freed after next transfer */
90		137
		138	static struct coro_cctx *cctx_first;
		139	static int cctx_count, cctx_idle;
		140
91	/* this is a structure representing a c-level coroutine */	141	/* this is a structure representing a c-level coroutine */
92	typedef struct coro_stack {	142	typedef struct coro_cctx {
93	struct coro_stack *next;	143	struct coro_cctx *next;
94		144
95	void idle_sp; / original stacklevel when coroutine was created */	145	/* the stack */
96	void *sptr;	146	void *sptr;
97	long ssize; /* positive == mmap, otherwise malloc */	147	size_t ssize;
98		148
99	/* cpu state */	149	/* cpu state */
		150	void idle_sp; / sp of top-level transfer/schedule/cede call */
		151	JMPENV idle_te; / same as idle_sp, but for top_env, TODO: remove once stable */
		152	JMPENV *top_env;
100	coro_context cctx;	153	coro_context cctx;
101	JMPENV *top_env;
102	} coro_stack;
103		154
104	/* the (fake) coro_stack representing the main program */	155	#if CORO_USE_VALGRIND
105	static coro_stack *main_stack;	156	int valgrind_id;
		157	#endif
		158	char inuse, mapped;
		159	} coro_cctx;
		160
		161	enum {
		162	CF_RUNNING = 0x0001, /* coroutine is running */
		163	CF_READY = 0x0002, /* coroutine is ready */
		164	CF_NEW = 0x0004, /* has never been switched to */
		165	CF_DESTROYED = 0x0008, /* coroutine data has been freed */
		166	};
106		167
107	/* this is a structure representing a perl-level coroutine */	168	/* this is a structure representing a perl-level coroutine */
108	struct coro {	169	struct coro {
109	/* the c coroutine allocated to this perl coroutine, if any */	170	/* the c coroutine allocated to this perl coroutine, if any */
110	coro_stack *stack;	171	coro_cctx *cctx;
111		172
112	/* data associated with this coroutine (initial args) */	173	/* data associated with this coroutine (initial args) */
113	AV *args;	174	AV *args;
114	int refcnt;	175	int refcnt;
		176	int save; /* CORO_SAVE flags */
		177	int flags; /* CF_ flags */
115		178
116	/* optionally saved, might be zero */	179	/* optionally saved, might be zero */
117	AV *defav;	180	AV defav; / @_ */
118	SV *defsv;	181	SV defsv; / $_ */
119	SV *errsv;	182	SV errsv; / $@ */
		183	GV deffh; / default filehandle */
		184	SV irssv; / $/ */
		185	SV irssv_sv; / real $/ cache */
120		186
121	/* saved global state not related to stacks */	187	#define VAR(name,type) type name;
122	U8 dowarn;	188	# include "state.h"
123	I32 in_eval;	189	#undef VAR
124
125	/* the stacks and related info (callchain etc..) */
126	PERL_SI *curstackinfo;
127	AV *curstack;
128	AV *mainstack;
129	SV **stack_sp;
130	OP *op;
131	SV **curpad;
132	AV *comppad;
133	CV *compcv;
134	SV **stack_base;
135	SV **stack_max;
136	SV **tmps_stack;
137	I32 tmps_floor;
138	I32 tmps_ix;
139	I32 tmps_max;
140	I32 *markstack;
141	I32 *markstack_ptr;
142	I32 *markstack_max;
143	I32 *scopestack;
144	I32 scopestack_ix;
145	I32 scopestack_max;
146	ANY *savestack;
147	I32 savestack_ix;
148	I32 savestack_max;
149	OP **retstack;
150	I32 retstack_ix;
151	I32 retstack_max;
152	PMOP *curpm;
153	COP *curcop;
154		190
155	/* coro process data */	191	/* coro process data */
156	int prio;	192	int prio;
		193
		194	/* linked list */
		195	struct coro next, prev;
		196	HV hv; / the perl hash associated with this coro, if any */
157	};	197	};
158		198
159	typedef struct coro *Coro__State;	199	typedef struct coro *Coro__State;
160	typedef struct coro *Coro__State_or_hashref;	200	typedef struct coro *Coro__State_or_hashref;
161		201
		202	/ Coro ******************************************************************/
		203
		204	#define PRIO_MAX 3
		205	#define PRIO_HIGH 1
		206	#define PRIO_NORMAL 0
		207	#define PRIO_LOW -1
		208	#define PRIO_IDLE -3
		209	#define PRIO_MIN -4
		210
		211	/* for Coro.pm */
		212	static SV *coro_current;
		213	static AV *coro_ready [PRIO_MAX-PRIO_MIN+1];
		214	static int coro_nready;
		215	static struct coro *coro_first;
		216
		217	/ lowlevel stuff ********************************************************/
		218
162	static AV *	219	static AV *
163	coro_clone_padlist (pTHX_ CV *cv)	220	coro_clone_padlist (pTHX_ CV *cv)
164	{	221	{
165	AV *padlist = CvPADLIST (cv);	222	AV *padlist = CvPADLIST (cv);
166	AV newpadlist, newpad;	223	AV newpadlist, newpad;
167		224
168	newpadlist = newAV ();	225	newpadlist = newAV ();
169	AvREAL_off (newpadlist);	226	AvREAL_off (newpadlist);
170	#if PERL_VERSION < 9	227	#if PERL_VERSION_ATLEAST (5,9,0)
		228	Perl_pad_push (aTHX_ padlist, AvFILLp (padlist) + 1);
		229	#else
171	Perl_pad_push (aTHX_ padlist, AvFILLp (padlist) + 1, 1);	230	Perl_pad_push (aTHX_ padlist, AvFILLp (padlist) + 1, 1);
172	#else
173	Perl_pad_push (aTHX_ padlist, AvFILLp (padlist) + 1);
174	#endif	231	#endif
175	newpad = (AV *)AvARRAY (padlist)[AvFILLp (padlist)];	232	newpad = (AV *)AvARRAY (padlist)[AvFILLp (padlist)];
176	--AvFILLp (padlist);	233	--AvFILLp (padlist);
177		234
178	av_store (newpadlist, 0, SvREFCNT_inc (*av_fetch (padlist, 0, FALSE)));	235	av_store (newpadlist, 0, SvREFCNT_inc (*av_fetch (padlist, 0, FALSE)));
…		…
222		279
223	#define PERL_MAGIC_coro PERL_MAGIC_ext	280	#define PERL_MAGIC_coro PERL_MAGIC_ext
224		281
225	static MGVTBL vtbl_coro = {0, 0, 0, 0, coro_cv_free};	282	static MGVTBL vtbl_coro = {0, 0, 0, 0, coro_cv_free};
226		283
		284	#define CORO_MAGIC(cv) \
		285	SvMAGIC (cv) \
		286	? SvMAGIC (cv)->mg_type == PERL_MAGIC_coro \
		287	? SvMAGIC (cv) \
		288	: mg_find ((SV *)cv, PERL_MAGIC_coro) \
		289	: 0
		290
227	/* the next two functions merely cache the padlists */	291	/* the next two functions merely cache the padlists */
228	static void	292	static void
229	get_padlist (pTHX_ CV *cv)	293	get_padlist (pTHX_ CV *cv)
230	{	294	{
231	MAGIC mg = mg_find ((SV )cv, PERL_MAGIC_coro);	295	MAGIC *mg = CORO_MAGIC (cv);
		296	AV *av;
232		297
233	if (mg && AvFILLp ((AV *)mg->mg_obj) >= 0)	298	if (mg && AvFILLp ((av = (AV *)mg->mg_obj)) >= 0)
234	CvPADLIST (cv) = (AV )av_pop ((AV )mg->mg_obj);	299	CvPADLIST (cv) = (AV *)AvARRAY (av)[AvFILLp (av)--];
235	else	300	else
236	{	301	{
237	#if 0	302	#if CORO_PREFER_PERL_FUNCTIONS
238	/* this should work - but it doesn't :( */	303	/* this is probably cleaner, but also slower? */
239	CV *cp = Perl_cv_clone (aTHX_ cv);	304	CV *cp = Perl_cv_clone (cv);
240	CvPADLIST (cv) = CvPADLIST (cp);	305	CvPADLIST (cv) = CvPADLIST (cp);
241	CvPADLIST (cp) = 0;	306	CvPADLIST (cp) = 0;
242	SvREFCNT_dec (cp);	307	SvREFCNT_dec (cp);
243	#else	308	#else
244	CvPADLIST (cv) = coro_clone_padlist (aTHX_ cv);	309	CvPADLIST (cv) = coro_clone_padlist (aTHX_ cv);
…		…
247	}	312	}
248		313
249	static void	314	static void
250	put_padlist (pTHX_ CV *cv)	315	put_padlist (pTHX_ CV *cv)
251	{	316	{
252	MAGIC mg = mg_find ((SV )cv, PERL_MAGIC_coro);	317	MAGIC *mg = CORO_MAGIC (cv);
		318	AV *av;
253		319
254	if (!mg)	320	if (!mg)
255	{	321	{
256	sv_magic ((SV *)cv, 0, PERL_MAGIC_coro, 0, 0);	322	sv_magic ((SV *)cv, 0, PERL_MAGIC_coro, 0, 0);
257	mg = mg_find ((SV *)cv, PERL_MAGIC_coro);	323	mg = mg_find ((SV *)cv, PERL_MAGIC_coro);
258	mg->mg_virtual = &vtbl_coro;	324	mg->mg_virtual = &vtbl_coro;
259	mg->mg_obj = (SV *)newAV ();	325	mg->mg_obj = (SV *)newAV ();
260	}	326	}
261		327
262	av_push ((AV )mg->mg_obj, (SV )CvPADLIST (cv));	328	av = (AV *)mg->mg_obj;
		329
		330	if (AvFILLp (av) >= AvMAX (av))
		331	av_extend (av, AvMAX (av) + 1);
		332
		333	AvARRAY (av)[++AvFILLp (av)] = (SV *)CvPADLIST (cv);
263	}	334	}
		335
		336	/ load & save, init *****************************************************/
264		337
265	#define SB do {	338	#define SB do {
266	#define SE } while (0)	339	#define SE } while (0)
267		340
268	#define LOAD(state) load_state(aTHX_ (state));
269	#define SAVE(state,flags) save_state(aTHX_ (state),(flags));
270
271	#define REPLACE_SV(sv,val) SB SvREFCNT_dec(sv); (sv) = (val); (val) = 0; SE	341	#define REPLACE_SV(sv,val) SB SvREFCNT_dec (sv); (sv) = (val); (val) = 0; SE
272		342
273	static void	343	static void
274	load_state(pTHX_ Coro__State c)	344	load_perl (pTHX_ Coro__State c)
275	{	345	{
276	PL_dowarn = c->dowarn;	346	#define VAR(name,type) PL_ ## name = c->name;
277	PL_in_eval = c->in_eval;	347	# include "state.h"
278		348	#undef VAR
279	PL_curstackinfo = c->curstackinfo;
280	PL_curstack = c->curstack;
281	PL_mainstack = c->mainstack;
282	PL_stack_sp = c->stack_sp;
283	PL_op = c->op;
284	PL_curpad = c->curpad;
285	PL_comppad = c->comppad;
286	PL_compcv = c->compcv;
287	PL_stack_base = c->stack_base;
288	PL_stack_max = c->stack_max;
289	PL_tmps_stack = c->tmps_stack;
290	PL_tmps_floor = c->tmps_floor;
291	PL_tmps_ix = c->tmps_ix;
292	PL_tmps_max = c->tmps_max;
293	PL_markstack = c->markstack;
294	PL_markstack_ptr = c->markstack_ptr;
295	PL_markstack_max = c->markstack_max;
296	PL_scopestack = c->scopestack;
297	PL_scopestack_ix = c->scopestack_ix;
298	PL_scopestack_max = c->scopestack_max;
299	PL_savestack = c->savestack;
300	PL_savestack_ix = c->savestack_ix;
301	PL_savestack_max = c->savestack_max;
302	#if PERL_VERSION < 9
303	PL_retstack = c->retstack;
304	PL_retstack_ix = c->retstack_ix;
305	PL_retstack_max = c->retstack_max;
306	#endif
307	PL_curpm = c->curpm;
308	PL_curcop = c->curcop;
309		349
310	if (c->defav) REPLACE_SV (GvAV (PL_defgv), c->defav);	350	if (c->defav) REPLACE_SV (GvAV (PL_defgv), c->defav);
311	if (c->defsv) REPLACE_SV (DEFSV , c->defsv);	351	if (c->defsv) REPLACE_SV (DEFSV , c->defsv);
312	if (c->errsv) REPLACE_SV (ERRSV , c->errsv);	352	if (c->errsv) REPLACE_SV (ERRSV , c->errsv);
		353	if (c->deffh) REPLACE_SV (PL_defoutgv , c->deffh);
		354
		355	if (c->irssv)
		356	{
		357	if (c->irssv == PL_rs \|\| sv_eq (PL_rs, c->irssv))
		358	{
		359	SvREFCNT_dec (c->irssv);
		360	c->irssv = 0;
		361	}
		362	else
		363	{
		364	REPLACE_SV (PL_rs, c->irssv);
		365	if (!c->irssv_sv) c->irssv_sv = get_sv ("/", 0);
		366	sv_setsv (c->irssv_sv, PL_rs);
		367	}
		368	}
313		369
314	{	370	{
315	dSP;	371	dSP;
316	CV *cv;	372	CV *cv;
317		373
318	/* now do the ugly restore mess */	374	/* now do the ugly restore mess */
319	while ((cv = (CV *)POPs))	375	while ((cv = (CV *)POPs))
320	{	376	{
321	AV padlist = (AV )POPs;
322
323	if (padlist)
324	{
325	put_padlist (aTHX_ cv); /* mark this padlist as available */	377	put_padlist (aTHX_ cv); /* mark this padlist as available */
326	CvPADLIST(cv) = padlist;	378	CvDEPTH (cv) = PTR2IV (POPs);
327	}	379	CvPADLIST (cv) = (AV *)POPs;
328
329	++CvDEPTH(cv);
330	}	380	}
331		381
332	PUTBACK;	382	PUTBACK;
333	}	383	}
334	}	384	}
335		385
336	static void	386	static void
337	save_state(pTHX_ Coro__State c, int flags)	387	save_perl (pTHX_ Coro__State c)
338	{	388	{
339	{	389	{
340	dSP;	390	dSP;
341	I32 cxix = cxstack_ix;	391	I32 cxix = cxstack_ix;
342	PERL_CONTEXT *ccstk = cxstack;	392	PERL_CONTEXT *ccstk = cxstack;
…		…
345	/*	395	/*
346	* the worst thing you can imagine happens first - we have to save	396	* the worst thing you can imagine happens first - we have to save
347	* (and reinitialize) all cv's in the whole callchain :(	397	* (and reinitialize) all cv's in the whole callchain :(
348	*/	398	*/
349		399
350	PUSHs (Nullsv);	400	XPUSHs (Nullsv);
351	/* this loop was inspired by pp_caller */	401	/* this loop was inspired by pp_caller */
352	for (;;)	402	for (;;)
353	{	403	{
354	while (cxix >= 0)	404	while (cxix >= 0)
355	{	405	{
356	PERL_CONTEXT *cx = &ccstk[cxix--];	406	PERL_CONTEXT *cx = &ccstk[cxix--];
357		407
358	if (CxTYPE(cx) == CXt_SUB)	408	if (CxTYPE (cx) == CXt_SUB \|\| CxTYPE (cx) == CXt_FORMAT)
359	{	409	{
360	CV *cv = cx->blk_sub.cv;	410	CV *cv = cx->blk_sub.cv;
		411
361	if (CvDEPTH(cv))	412	if (CvDEPTH (cv))
362	{	413	{
363	EXTEND (SP, CvDEPTH(cv)*2);	414	EXTEND (SP, 3);
364
365	while (--CvDEPTH(cv))
366	{
367	/* this tells the restore code to increment CvDEPTH */
368	PUSHs (Nullsv);
369	PUSHs ((SV *)cv);
370	}
371
372	PUSHs ((SV *)CvPADLIST(cv));	415	PUSHs ((SV *)CvPADLIST (cv));
		416	PUSHs (INT2PTR (SV *, CvDEPTH (cv)));
373	PUSHs ((SV *)cv);	417	PUSHs ((SV *)cv);
374		418
		419	CvDEPTH (cv) = 0;
375	get_padlist (aTHX_ cv);	420	get_padlist (aTHX_ cv);
376	}	421	}
377	}	422	}
378	#ifdef CXt_FORMAT
379	else if (CxTYPE(cx) == CXt_FORMAT)
380	{
381	/* I never used formats, so how should I know how these are implemented? */
382	/* my bold guess is as a simple, plain sub... */
383	croak ("CXt_FORMAT not yet handled. Don't switch coroutines from within formats");
384	}
385	#endif
386	}	423	}
387		424
388	if (top_si->si_type == PERLSI_MAIN)	425	if (top_si->si_type == PERLSI_MAIN)
389	break;	426	break;
390		427
…		…
394	}	431	}
395		432
396	PUTBACK;	433	PUTBACK;
397	}	434	}
398		435
399	c->defav = flags & TRANSFER_SAVE_DEFAV ? (AV *)SvREFCNT_inc (GvAV (PL_defgv)) : 0;	436	c->defav = c->save & CORO_SAVE_DEFAV ? (AV *)SvREFCNT_inc (GvAV (PL_defgv)) : 0;
400	c->defsv = flags & TRANSFER_SAVE_DEFSV ? SvREFCNT_inc (DEFSV) : 0;	437	c->defsv = c->save & CORO_SAVE_DEFSV ? SvREFCNT_inc (DEFSV) : 0;
401	c->errsv = flags & TRANSFER_SAVE_ERRSV ? SvREFCNT_inc (ERRSV) : 0;	438	c->errsv = c->save & CORO_SAVE_ERRSV ? SvREFCNT_inc (ERRSV) : 0;
		439	c->deffh = c->save & CORO_SAVE_DEFFH ? (GV *)SvREFCNT_inc (PL_defoutgv) : 0;
		440	c->irssv = c->save & CORO_SAVE_IRSSV ? SvREFCNT_inc (PL_rs) : 0;
402		441
403	c->dowarn = PL_dowarn;	442	#define VAR(name,type)c->name = PL_ ## name;
404	c->in_eval = PL_in_eval;	443	# include "state.h"
405		444	#undef VAR
406	c->curstackinfo = PL_curstackinfo;
407	c->curstack = PL_curstack;
408	c->mainstack = PL_mainstack;
409	c->stack_sp = PL_stack_sp;
410	c->op = PL_op;
411	c->curpad = PL_curpad;
412	c->comppad = PL_comppad;
413	c->compcv = PL_compcv;
414	c->stack_base = PL_stack_base;
415	c->stack_max = PL_stack_max;
416	c->tmps_stack = PL_tmps_stack;
417	c->tmps_floor = PL_tmps_floor;
418	c->tmps_ix = PL_tmps_ix;
419	c->tmps_max = PL_tmps_max;
420	c->markstack = PL_markstack;
421	c->markstack_ptr = PL_markstack_ptr;
422	c->markstack_max = PL_markstack_max;
423	c->scopestack = PL_scopestack;
424	c->scopestack_ix = PL_scopestack_ix;
425	c->scopestack_max = PL_scopestack_max;
426	c->savestack = PL_savestack;
427	c->savestack_ix = PL_savestack_ix;
428	c->savestack_max = PL_savestack_max;
429	#if PERL_VERSION < 9
430	c->retstack = PL_retstack;
431	c->retstack_ix = PL_retstack_ix;
432	c->retstack_max = PL_retstack_max;
433	#endif
434	c->curpm = PL_curpm;
435	c->curcop = PL_curcop;
436	}	445	}
437		446
438	/*	447	/*
439	* allocate various perl stacks. This is an exact copy	448	* allocate various perl stacks. This is an exact copy
440	* of perl.c:init_stacks, except that it uses less memory	449	* of perl.c:init_stacks, except that it uses less memory
441	* on the (sometimes correct) assumption that coroutines do	450	* on the (sometimes correct) assumption that coroutines do
442	* not usually need a lot of stackspace.	451	* not usually need a lot of stackspace.
443	*/	452	*/
		453	#if CORO_PREFER_PERL_FUNCTIONS
		454	# define coro_init_stacks init_stacks
		455	#else
444	static void	456	static void
445	coro_init_stacks (pTHX)	457	coro_init_stacks (pTHX)
446	{	458	{
447	LOCK;	459	PL_curstackinfo = new_stackinfo(64, 6);
448
449	PL_curstackinfo = new_stackinfo(96, 1024/sizeof(PERL_CONTEXT) - 1);
450	PL_curstackinfo->si_type = PERLSI_MAIN;	460	PL_curstackinfo->si_type = PERLSI_MAIN;
451	PL_curstack = PL_curstackinfo->si_stack;	461	PL_curstack = PL_curstackinfo->si_stack;
452	PL_mainstack = PL_curstack; /* remember in case we switch stacks */	462	PL_mainstack = PL_curstack; /* remember in case we switch stacks */
453		463
454	PL_stack_base = AvARRAY(PL_curstack);	464	PL_stack_base = AvARRAY(PL_curstack);
455	PL_stack_sp = PL_stack_base;	465	PL_stack_sp = PL_stack_base;
456	PL_stack_max = PL_stack_base + AvMAX(PL_curstack);	466	PL_stack_max = PL_stack_base + AvMAX(PL_curstack);
457		467
458	New(50,PL_tmps_stack,96,SV*);	468	New(50,PL_tmps_stack,64,SV*);
459	PL_tmps_floor = -1;	469	PL_tmps_floor = -1;
460	PL_tmps_ix = -1;	470	PL_tmps_ix = -1;
461	PL_tmps_max = 96;	471	PL_tmps_max = 64;
462		472
463	New(54,PL_markstack,16,I32);	473	New(54,PL_markstack,16,I32);
464	PL_markstack_ptr = PL_markstack;	474	PL_markstack_ptr = PL_markstack;
465	PL_markstack_max = PL_markstack + 16;	475	PL_markstack_max = PL_markstack + 16;
466		476
…		…
470		480
471	New(54,PL_scopestack,16,I32);	481	New(54,PL_scopestack,16,I32);
472	PL_scopestack_ix = 0;	482	PL_scopestack_ix = 0;
473	PL_scopestack_max = 16;	483	PL_scopestack_max = 16;
474		484
475	New(54,PL_savestack,96,ANY);	485	New(54,PL_savestack,64,ANY);
476	PL_savestack_ix = 0;	486	PL_savestack_ix = 0;
477	PL_savestack_max = 96;	487	PL_savestack_max = 64;
478		488
479	#if PERL_VERSION < 9	489	#if !PERL_VERSION_ATLEAST (5,9,0)
480	New(54,PL_retstack,8,OP*);	490	New(54,PL_retstack,4,OP*);
481	PL_retstack_ix = 0;	491	PL_retstack_ix = 0;
482	PL_retstack_max = 8;	492	PL_retstack_max = 4;
483	#endif	493	#endif
484
485	UNLOCK;
486	}	494	}
		495	#endif
487		496
488	/*	497	/*
489	* destroy the stacks, the callchain etc...	498	* destroy the stacks, the callchain etc...
490	*/	499	*/
491	static void	500	static void
492	destroy_stacks(pTHX)	501	coro_destroy_stacks (pTHX)
493	{	502	{
494	if (!IN_DESTRUCT)	503	if (!IN_DESTRUCT)
495	{	504	{
496	/* is this ugly, I ask? */	505	/* restore all saved variables and stuff */
497	LEAVE_SCOPE (0);	506	LEAVE_SCOPE (0);
		507	assert (PL_tmps_floor == -1);
498		508
499	/* sure it is, but more important: is it correct?? :/ */	509	/* free all temporaries */
500	FREETMPS;	510	FREETMPS;
		511	assert (PL_tmps_ix == -1);
501		512
		513	/* unwind all extra stacks */
502	/POPSTACK_TO (PL_mainstack);//D//use/	514	POPSTACK_TO (PL_mainstack);
		515
		516	/* unwind main stack */
		517	dounwind (-1);
503	}	518	}
504		519
505	while (PL_curstackinfo->si_next)	520	while (PL_curstackinfo->si_next)
506	PL_curstackinfo = PL_curstackinfo->si_next;	521	PL_curstackinfo = PL_curstackinfo->si_next;
507		522
508	while (PL_curstackinfo)	523	while (PL_curstackinfo)
509	{	524	{
510	PERL_SI *p = PL_curstackinfo->si_prev;	525	PERL_SI *p = PL_curstackinfo->si_prev;
511		526
512	{ /D//remove/
513	dSP;
514	SWITCHSTACK (PL_curstack, PL_curstackinfo->si_stack);
515	PUTBACK; /* possibly superfluous */
516	}
517
518	if (!IN_DESTRUCT)	527	if (!IN_DESTRUCT)
519	{
520	dounwind (-1);/D//remove/
521	SvREFCNT_dec (PL_curstackinfo->si_stack);	528	SvREFCNT_dec (PL_curstackinfo->si_stack);
522	}
523		529
524	Safefree (PL_curstackinfo->si_cxstack);	530	Safefree (PL_curstackinfo->si_cxstack);
525	Safefree (PL_curstackinfo);	531	Safefree (PL_curstackinfo);
526	PL_curstackinfo = p;	532	PL_curstackinfo = p;
527	}	533	}
528		534
529	Safefree (PL_tmps_stack);	535	Safefree (PL_tmps_stack);
530	Safefree (PL_markstack);	536	Safefree (PL_markstack);
531	Safefree (PL_scopestack);	537	Safefree (PL_scopestack);
532	Safefree (PL_savestack);	538	Safefree (PL_savestack);
533	#if PERL_VERSION < 9	539	#if !PERL_VERSION_ATLEAST (5,9,0)
534	Safefree (PL_retstack);	540	Safefree (PL_retstack);
535	#endif	541	#endif
536	}	542	}
537		543
		544	static size_t
		545	coro_rss (struct coro *coro)
		546	{
		547	size_t rss = sizeof (coro);
		548
		549	if (coro->mainstack)
		550	{
		551	if (coro->flags & CF_RUNNING)
		552	{
		553	#define VAR(name,type)coro->name = PL_ ## name;
		554	# include "state.h"
		555	#undef VAR
		556	}
		557
		558	rss += sizeof (coro->curstackinfo);
		559	rss += sizeof (struct xpvav) + (1 + AvFILL (coro->curstackinfo->si_stack)) * sizeof (SV *);
		560	rss += (coro->curstackinfo->si_cxmax + 1) * sizeof (PERL_CONTEXT);
		561	rss += sizeof (struct xpvav) + (1 + AvFILL (coro->curstack)) * sizeof (SV *);
		562	rss += coro->tmps_max * sizeof (SV *);
		563	rss += (coro->markstack_max - coro->markstack_ptr) * sizeof (I32);
		564	rss += coro->scopestack_max * sizeof (I32);
		565	rss += coro->savestack_max * sizeof (ANY);
		566
		567	#if !PERL_VERSION_ATLEAST (5,9,0)
		568	rss += coro->retstack_max * sizeof (OP *);
		569	#endif
		570	}
		571
		572	return rss;
		573	}
		574
		575	/ coroutine stack handling **********************************************/
		576
538	static void	577	static void
539	setup_coro (struct coro *coro)	578	setup_coro (pTHX_ struct coro *coro)
540	{	579	{
541	/*	580	/*
542	* emulate part of the perl startup here.	581	* emulate part of the perl startup here.
543	*/	582	*/
544	dTHX;	583	coro_init_stacks (aTHX);
		584
		585	PL_curcop = &PL_compiling;
		586	PL_in_eval = EVAL_NULL;
		587	PL_comppad = 0;
		588	PL_curpm = 0;
		589	PL_localizing = 0;
		590	PL_dirty = 0;
		591	PL_restartop = 0;
		592
		593	{
		594	dSP;
		595	LOGOP myop;
		596
		597	SvREFCNT_dec (GvAV (PL_defgv));
		598	GvAV (PL_defgv) = coro->args; coro->args = 0;
		599
		600	Zero (&myop, 1, LOGOP);
		601	myop.op_next = Nullop;
		602	myop.op_flags = OPf_WANT_VOID;
		603
		604	PUSHMARK (SP);
		605	XPUSHs (av_shift (GvAV (PL_defgv)));
		606	PUTBACK;
		607	PL_op = (OP *)&myop;
		608	PL_op = PL_ppaddr[OP_ENTERSUB](aTHX);
		609	SPAGAIN;
		610	}
		611
		612	ENTER; /* necessary e.g. for dounwind */
		613	}
		614
		615	static void
		616	free_coro_mortal (pTHX)
		617	{
		618	if (coro_mortal)
		619	{
		620	SvREFCNT_dec (coro_mortal);
		621	coro_mortal = 0;
		622	}
		623	}
		624
		625	/* inject a fake call to Coro::State::_cctx_init into the execution */
		626	/* _cctx_init should be careful, as it could be called at almost any time */
		627	/* during execution of a perl program */
		628	static void NOINLINE
		629	prepare_cctx (pTHX_ coro_cctx *cctx)
		630	{
545	dSP;	631	dSP;
546	UNOP myop;	632	LOGOP myop;
547	SV sub_init = (SV )get_cv ("Coro::State::coro_init", FALSE);
548		633
549	coro_init_stacks (aTHX);
550	/PL_curcop = 0;/
551	/PL_in_eval = PL_in_eval;/ /* inherit */
552	SvREFCNT_dec (GvAV (PL_defgv));
553	GvAV (PL_defgv) = coro->args; coro->args = 0;
554
555	SPAGAIN;
556
557	Zero (&myop, 1, UNOP);	634	Zero (&myop, 1, LOGOP);
558	myop.op_next = Nullop;	635	myop.op_next = PL_op;
559	myop.op_flags = OPf_WANT_VOID;	636	myop.op_flags = OPf_WANT_VOID \| OPf_STACKED;
560		637
		638	PUSHMARK (SP);
		639	EXTEND (SP, 2);
		640	PUSHs (sv_2mortal (newSViv (PTR2IV (cctx))));
		641	PUSHs ((SV *)get_cv ("Coro::State::_cctx_init", FALSE));
		642	PUTBACK;
561	PL_op = (OP *)&myop;	643	PL_op = (OP *)&myop;
562
563	PUSHMARK(SP);
564	XPUSHs (sub_init);
565	PUTBACK;
566	PL_op = PL_ppaddr[OP_ENTERSUB](aTHX);	644	PL_op = PL_ppaddr[OP_ENTERSUB](aTHX);
567	SPAGAIN;	645	SPAGAIN;
568
569	ENTER; /* necessary e.g. for dounwind */
570	}	646	}
571		647
572	static void	648	/*
573	free_coro_mortal ()	649	* this is a _very_ stripped down perl interpreter ;)
574	{	650	*/
575	if (coro_mortal)
576	{
577	SvREFCNT_dec (coro_mortal);
578	coro_mortal = 0;
579	}
580	}
581
582	static void	651	static void
583	coro_run (void *arg)	652	coro_run (void *arg)
584	{	653	{
		654	dTHX;
		655
		656	/* coro_run is the alternative tail of transfer(), so unlock here. */
		657	UNLOCK;
		658
		659	PL_top_env = &PL_start_env;
		660
		661	/* inject a fake subroutine call to cctx_init */
		662	prepare_cctx (aTHX_ (coro_cctx *)arg);
		663
		664	/* somebody or something will hit me for both perl_run and PL_restartop */
		665	PL_restartop = PL_op;
		666	perl_run (PL_curinterp);
		667
585	/*	668	/*
586	* this is a _very_ stripped down perl interpreter ;)	669	* If perl-run returns we assume exit() was being called or the coro
		670	* fell off the end, which seems to be the only valid (non-bug)
		671	* reason for perl_run to return. We try to exit by jumping to the
		672	* bootstrap-time "top" top_env, as we cannot restore the "main"
		673	* coroutine as Coro has no such concept
587	*/	674	*/
588	dTHX;
589	PL_top_env = &PL_start_env;	675	PL_top_env = main_top_env;
590		676	JMPENV_JUMP (2); /* I do not feel well about the hardcoded 2 at all */
591	UNLOCK;
592
593	sv_setiv (get_sv ("Coro::State::cctx_stack", FALSE), PTR2IV ((coro_stack *)arg));
594	sv_setiv (get_sv ("Coro::State::cctx_restartop", FALSE), PTR2IV (PL_op));
595	PL_restartop = CvSTART (get_cv ("Coro::State::cctx_init", FALSE));
596
597	/* somebody will hit me for both perl_run and PL_restart_op */
598	perl_run (aTHX_ PERL_GET_CONTEXT);
599
600	abort ();
601	}	677	}
602		678
603	static coro_stack *	679	static coro_cctx *
604	stack_new ()	680	cctx_new ()
605	{	681	{
606	coro_stack *stack;	682	coro_cctx *cctx;
		683	void *stack_start;
		684	size_t stack_size;
607		685
		686	++cctx_count;
		687
608	New (0, stack, 1, coro_stack);	688	Newz (0, cctx, 1, coro_cctx);
609		689
610	#if HAVE_MMAP	690	#if HAVE_MMAP
611		691
612	stack->ssize = ((STACKSIZE * sizeof (long) + PAGESIZE - 1) / PAGESIZE + STACKGUARD) * PAGESIZE; /* mmap should do allocate-on-write for us */	692	cctx->ssize = ((coro_stacksize * sizeof (long) + PAGESIZE - 1) / PAGESIZE + CORO_STACKGUARD) * PAGESIZE;
		693	/* mmap supposedly does allocate-on-write for us */
613	stack->sptr = mmap (0, stack->ssize, PROT_EXEC\|PROT_READ\|PROT_WRITE, MAP_PRIVATE\|MAP_ANONYMOUS, 0, 0);	694	cctx->sptr = mmap (0, cctx->ssize, PROT_EXEC\|PROT_READ\|PROT_WRITE, MAP_PRIVATE\|MAP_ANONYMOUS, 0, 0);
614		695
615	if (stack->sptr == (void *)-1)	696	if (cctx->sptr != (void *)-1)
		697	{
		698	# if CORO_STACKGUARD
		699	mprotect (cctx->sptr, CORO_STACKGUARD * PAGESIZE, PROT_NONE);
		700	# endif
		701	stack_start = CORO_STACKGUARD * PAGESIZE + (char *)cctx->sptr;
		702	stack_size = cctx->ssize - CORO_STACKGUARD * PAGESIZE;
		703	cctx->mapped = 1;
616	{	704	}
		705	else
		706	#endif
		707	{
		708	cctx->ssize = coro_stacksize * (long)sizeof (long);
		709	New (0, cctx->sptr, coro_stacksize, long);
		710
		711	if (!cctx->sptr)
		712	{
617	perror ("FATAL: unable to mmap stack for coroutine");	713	perror ("FATAL: unable to allocate stack for coroutine");
618	_exit (EXIT_FAILURE);	714	_exit (EXIT_FAILURE);
619	}	715	}
620		716
621	mprotect (stack->sptr, STACKGUARD * PAGESIZE, PROT_NONE);	717	stack_start = cctx->sptr;
622		718	stack_size = cctx->ssize;
623	#else
624
625	stack->ssize = STACKSIZE * (long)sizeof (long);
626	New (0, stack->sptr, STACKSIZE, long);
627
628	if (!stack->sptr)
629	{	719	}
630	perror (stderr, "FATAL: unable to malloc stack for coroutine");
631	_exit (EXIT_FAILURE);
632	}
633		720
634	#endif	721	REGISTER_STACK (cctx, (char )stack_start, (char )stack_start + stack_size);
635
636	coro_create (&stack->cctx, coro_run, (void *)stack, stack->sptr, stack->ssize);	722	coro_create (&cctx->cctx, coro_run, (void *)cctx, stack_start, stack_size);
637		723
638	return stack;	724	return cctx;
639	}	725	}
640		726
641	static void	727	static void
642	stack_free (coro_stack *stack)	728	cctx_destroy (coro_cctx *cctx)
643	{	729	{
644	if (!stack \|\| stack == main_stack)	730	if (!cctx)
645	return;	731	return;
646		732
		733	--cctx_count;
		734
		735	#if CORO_USE_VALGRIND
		736	VALGRIND_STACK_DEREGISTER (cctx->valgrind_id);
		737	#endif
		738
647	#if HAVE_MMAP	739	#if HAVE_MMAP
		740	if (cctx->mapped)
648	munmap (stack->sptr, stack->ssize);	741	munmap (cctx->sptr, cctx->ssize);
649	#else
650	Safefree (stack->sptr);
651	#endif
652
653	Safefree (stack);
654	}
655
656	static coro_stack *stack_first;
657
658	static coro_stack *
659	stack_get ()
660	{
661	coro_stack *stack;
662
663	if (stack_first)
664	{
665	stack = stack_first;
666	stack_first = stack->next;
667	}
668	else	742	else
		743	#endif
		744	Safefree (cctx->sptr);
		745
		746	Safefree (cctx);
		747	}
		748
		749	static coro_cctx *
		750	cctx_get (pTHX)
		751	{
		752	while (cctx_first)
669	{	753	{
670	stack = stack_new ();	754	coro_cctx *cctx = cctx_first;
		755	cctx_first = cctx->next;
		756	--cctx_idle;
		757
		758	if (cctx->ssize >= coro_stacksize)
		759	return cctx;
		760
		761	cctx_destroy (cctx);
		762	}
		763
671	PL_op = PL_op->op_next;	764	PL_op = PL_op->op_next;
		765	return cctx_new ();
		766	}
		767
		768	static void
		769	cctx_put (coro_cctx *cctx)
		770	{
		771	/* free another cctx if overlimit */
		772	if (cctx_idle >= MAX_IDLE_CCTX)
		773	{
		774	coro_cctx *first = cctx_first;
		775	cctx_first = first->next;
		776	--cctx_idle;
		777
		778	assert (!first->inuse);
		779	cctx_destroy (first);
672	}	780	}
673		781
674	return stack;	782	++cctx_idle;
		783	cctx->next = cctx_first;
		784	cctx_first = cctx;
675	}	785	}
676		786
677	static void	787	/ coroutine switching ***************************************************/
678	stack_put (coro_stack *stack)
679	{
680	stack->next = stack_first;
681	stack_first = stack;
682	}
683		788
684	/* never call directly, always through the coro_state_transfer global variable */	789	/* never call directly, always through the coro_state_transfer global variable */
685	static void	790	static void NOINLINE
686	transfer_impl (pTHX_ struct coro prev, struct coro next, int flags)	791	transfer (pTHX_ struct coro prev, struct coro next)
687	{	792	{
688	dSTACKLEVEL;	793	dSTACKLEVEL;
689		794
690	/* sometimes transfer is only called to set idle_sp */	795	/* sometimes transfer is only called to set idle_sp */
691	if (flags == TRANSFER_SET_STACKLEVEL)	796	if (!next)
		797	{
692	((coro_stack *)prev)->idle_sp = STACKLEVEL;	798	((coro_cctx *)prev)->idle_sp = STACKLEVEL;
		799	assert (((coro_cctx )prev)->idle_te = PL_top_env); / just for the side-effect when asserts are enabled */
		800	}
693	else if (prev != next)	801	else if (prev != next)
694	{	802	{
695	coro_stack *prev__stack;	803	coro_cctx *prev__cctx;
		804
		805	if (prev->flags & CF_NEW)
		806	{
		807	/* create a new empty context */
		808	Newz (0, prev->cctx, 1, coro_cctx);
		809	prev->cctx->inuse = 1;
		810	prev->flags &= ~CF_NEW;
		811	prev->flags \|= CF_RUNNING;
		812	}
		813
		814	/TODO: must not croak here /
		815	if (!prev->flags & CF_RUNNING)
		816	croak ("Coro::State::transfer called with non-running prev Coro::State, but can only transfer from running states");
		817
		818	if (next->flags & CF_RUNNING)
		819	croak ("Coro::State::transfer called with running next Coro::State, but can only transfer to inactive states");
		820
		821	if (next->flags & CF_DESTROYED)
		822	croak ("Coro::State::transfer called with destroyed next Coro::State, but can only transfer to inactive states");
		823
		824	prev->flags &= ~CF_RUNNING;
		825	next->flags \|= CF_RUNNING;
696		826
697	LOCK;	827	LOCK;
698		828
699	if (next->mainstack)	829	if (next->flags & CF_NEW)
700	{	830	{
701	/* coroutine already started */	831	/* need to start coroutine */
702	SAVE (prev, flags);	832	next->flags &= ~CF_NEW;
703	LOAD (next);	833	/* first get rid of the old state */
		834	save_perl (aTHX_ prev);
		835	/* setup coroutine call */
		836	setup_coro (aTHX_ next);
		837	/* need a new stack */
		838	assert (!next->cctx);
704	}	839	}
705	else	840	else
706	{	841	{
707	/* need to start coroutine */	842	/* coroutine already started */
708	/* first get rid of the old state */	843	save_perl (aTHX_ prev);
709	SAVE (prev, -1);	844	load_perl (aTHX_ next);
710	/* setup coroutine call */
711	setup_coro (next);
712	/* need a stack */
713	next->stack = 0;
714	}	845	}
715		846
716	prev__stack = prev->stack;	847	prev__cctx = prev->cctx;
717		848
718	/* possibly "free" the stack */	849	/* possibly "free" the cctx */
719	if (prev__stack->idle_sp == STACKLEVEL)	850	if (prev__cctx->idle_sp == STACKLEVEL)
720	{	851	{
721	stack_put (prev__stack);	852	/* I assume that STACKLEVEL is a stronger indicator than PL_top_env changes */
		853	assert (("ERROR: current top_env must equal previous top_env", PL_top_env == prev__cctx->idle_te));
		854
722	prev->stack = 0;	855	prev->cctx = 0;
		856
		857	cctx_put (prev__cctx);
		858	prev__cctx->inuse = 0;
723	}	859	}
724		860
725	if (!next->stack)	861	if (!next->cctx)
726	next->stack = stack_get ();
727
728	if (prev__stack != next->stack)
729	{	862	{
730	prev__stack->top_env = PL_top_env;	863	next->cctx = cctx_get (aTHX);
731	PL_top_env = next->stack->top_env;	864	assert (!next->cctx->inuse);
732	coro_transfer (&prev__stack->cctx, &next->stack->cctx);	865	next->cctx->inuse = 1;
733	}	866	}
734		867
		868	if (prev__cctx != next->cctx)
		869	{
		870	prev__cctx->top_env = PL_top_env;
		871	PL_top_env = next->cctx->top_env;
		872	coro_transfer (&prev__cctx->cctx, &next->cctx->cctx);
		873	}
		874
735	free_coro_mortal ();	875	free_coro_mortal (aTHX);
736
737	UNLOCK;	876	UNLOCK;
738	}	877	}
739	}	878	}
740		879
741	/* use this function pointer to call the above function */
742	/* this is done to increase chances of the compiler not inlining the call */
743	/* not static to make it even harder for the compiler (and theoretically impossible in most cases */
744	void (coro_state_transfer)(pTHX_ struct coro prev, struct coro *next, int flags) = transfer_impl;
745
746	struct transfer_args	880	struct transfer_args
747	{	881	{
748	struct coro prev, next;	882	struct coro prev, next;
749	int flags;
750	};	883	};
751		884
752	#define TRANSFER(ta) coro_state_transfer ((ta).prev, (ta).next, (ta).flags)	885	#define TRANSFER(ta) transfer (aTHX_ (ta).prev, (ta).next)
753		886
		887	/ high level stuff ******************************************************/
		888
754	static void	889	static int
755	coro_state_destroy (struct coro *coro)	890	coro_state_destroy (pTHX_ struct coro *coro)
756	{	891	{
757	if (coro->refcnt--)	892	if (coro->flags & CF_DESTROYED)
758	return;	893	return 0;
		894
		895	coro->flags \|= CF_DESTROYED;
		896
		897	if (coro->flags & CF_READY)
		898	{
		899	/* reduce nready, as destroying a ready coro effectively unreadies it */
		900	/* alternative: look through all ready queues and remove the coro */
		901	LOCK;
		902	--coro_nready;
		903	UNLOCK;
		904	}
		905	else
		906	coro->flags \|= CF_READY; /* make sure it is NOT put into the readyqueue */
759		907
760	if (coro->mainstack && coro->mainstack != main_mainstack)	908	if (coro->mainstack && coro->mainstack != main_mainstack)
761	{	909	{
762	struct coro temp;	910	struct coro temp;
763		911
764	SAVE (aTHX_ (&temp), TRANSFER_SAVE_ALL);	912	assert (!(coro->flags & CF_RUNNING));
		913
		914	Zero (&temp, 1, struct coro);
		915	temp.save = CORO_SAVE_ALL;
		916
		917	if (coro->flags & CF_RUNNING)
		918	croak ("FATAL: tried to destroy currently running coroutine");
		919
		920	save_perl (aTHX_ &temp);
765	LOAD (aTHX_ coro);	921	load_perl (aTHX_ coro);
766		922
767	destroy_stacks (aTHX);	923	coro_destroy_stacks (aTHX);
768		924
769	LOAD ((&temp)); /* this will get rid of defsv etc.. */	925	load_perl (aTHX_ &temp); /* this will get rid of defsv etc.. */
770		926
771	coro->mainstack = 0;	927	coro->mainstack = 0;
772	}	928	}
773		929
774	stack_free (coro->stack);	930	cctx_destroy (coro->cctx);
775	SvREFCNT_dec (coro->args);	931	SvREFCNT_dec (coro->args);
776	Safefree (coro);	932
		933	if (coro->next) coro->next->prev = coro->prev;
		934	if (coro->prev) coro->prev->next = coro->next;
		935	if (coro == coro_first) coro_first = coro->next;
		936
		937	return 1;
777	}	938	}
778		939
779	static int	940	static int
780	coro_state_clear (SV sv, MAGIC mg)	941	coro_state_free (pTHX_ SV sv, MAGIC mg)
781	{	942	{
782	struct coro coro = (struct coro )mg->mg_ptr;	943	struct coro coro = (struct coro )mg->mg_ptr;
783	mg->mg_ptr = 0;	944	mg->mg_ptr = 0;
784		945
		946	coro->hv = 0;
		947
		948	if (--coro->refcnt < 0)
		949	{
785	coro_state_destroy (coro);	950	coro_state_destroy (aTHX_ coro);
		951	Safefree (coro);
		952	}
786		953
787	return 0;	954	return 0;
788	}	955	}
789		956
790	static int	957	static int
791	coro_state_dup (MAGIC mg, CLONE_PARAMS params)	958	coro_state_dup (pTHX_ MAGIC mg, CLONE_PARAMS params)
792	{	959	{
793	struct coro coro = (struct coro )mg->mg_ptr;	960	struct coro coro = (struct coro )mg->mg_ptr;
794		961
795	++coro->refcnt;	962	++coro->refcnt;
796		963
797	return 0;	964	return 0;
798	}	965	}
799		966
800	static MGVTBL coro_state_vtbl = { 0, 0, 0, 0, coro_state_clear, 0, coro_state_dup, 0 };	967	static MGVTBL coro_state_vtbl = {
		968	0, 0, 0, 0,
		969	coro_state_free,
		970	0,
		971	#ifdef MGf_DUP
		972	coro_state_dup,
		973	#else
		974	# define MGf_DUP 0
		975	#endif
		976	};
801		977
802	static struct coro *	978	static struct coro *
803	SvSTATE (SV *coro)	979	SvSTATE_ (pTHX_ SV *coro)
804	{	980	{
805	HV *stash;	981	HV *stash;
806	MAGIC *mg;	982	MAGIC *mg;
807		983
808	if (SvROK (coro))	984	if (SvROK (coro))
…		…
814	/* very slow, but rare, check */	990	/* very slow, but rare, check */
815	if (!sv_derived_from (sv_2mortal (newRV_inc (coro)), "Coro::State"))	991	if (!sv_derived_from (sv_2mortal (newRV_inc (coro)), "Coro::State"))
816	croak ("Coro::State object required");	992	croak ("Coro::State object required");
817	}	993	}
818		994
819	mg = SvMAGIC (coro);	995	mg = CORO_MAGIC (coro);
820	assert (mg->mg_type == PERL_MAGIC_ext);
821	return (struct coro *)mg->mg_ptr;	996	return (struct coro *)mg->mg_ptr;
822	}	997	}
823		998
		999	#define SvSTATE(sv) SvSTATE_ (aTHX_ (sv))
		1000
824	static void	1001	static void
825	prepare_transfer (pTHX_ struct transfer_args ta, SV prev, SV *next, int flags)	1002	prepare_transfer (pTHX_ struct transfer_args ta, SV prev_sv, SV *next_sv)
826	{	1003	{
827	ta->prev = SvSTATE (prev);	1004	ta->prev = SvSTATE (prev_sv);
828	ta->next = SvSTATE (next);	1005	ta->next = SvSTATE (next_sv);
829	ta->flags = flags;
830	}	1006	}
831		1007
832	static void	1008	static void
833	api_transfer (SV prev, SV next, int flags)	1009	api_transfer (SV prev_sv, SV next_sv)
834	{	1010	{
835	dTHX;	1011	dTHX;
836	struct transfer_args ta;	1012	struct transfer_args ta;
837		1013
838	prepare_transfer (aTHX_ &ta, prev, next, flags);	1014	prepare_transfer (aTHX_ &ta, prev_sv, next_sv);
839	TRANSFER (ta);	1015	TRANSFER (ta);
840	}	1016	}
841		1017
		1018	static int
		1019	api_save (SV *coro_sv, int new_save)
		1020	{
		1021	dTHX;
		1022	struct coro *coro = SvSTATE (coro_sv);
		1023	int old_save = coro->save;
		1024
		1025	if (new_save >= 0)
		1026	coro->save = new_save;
		1027
		1028	return old_save;
		1029	}
		1030
842	/ Coro ******************************************************************/	1031	/ Coro ******************************************************************/
843		1032
844	#define PRIO_MAX 3
845	#define PRIO_HIGH 1
846	#define PRIO_NORMAL 0
847	#define PRIO_LOW -1
848	#define PRIO_IDLE -3
849	#define PRIO_MIN -4
850
851	/* for Coro.pm */
852	static GV coro_current, coro_idle;
853	static AV *coro_ready [PRIO_MAX-PRIO_MIN+1];
854	static int coro_nready;
855
856	static void	1033	static void
857	coro_enq (pTHX_ SV *sv)	1034	coro_enq (pTHX_ SV *coro_sv)
858	{	1035	{
859	int prio;
860
861	if (SvTYPE (sv) != SVt_PVHV)
862	croak ("Coro::ready tried to enqueue something that is not a coroutine");
863
864	prio = SvSTATE (sv)->prio;
865
866	av_push (coro_ready [prio - PRIO_MIN], sv);	1036	av_push (coro_ready [SvSTATE (coro_sv)->prio - PRIO_MIN], coro_sv);
867	coro_nready++;
868	}	1037	}
869		1038
870	static SV *	1039	static SV *
871	coro_deq (pTHX_ int min_prio)	1040	coro_deq (pTHX_ int min_prio)
872	{	1041	{
…		…
876	if (min_prio < 0)	1045	if (min_prio < 0)
877	min_prio = 0;	1046	min_prio = 0;
878		1047
879	for (prio = PRIO_MAX - PRIO_MIN + 1; --prio >= min_prio; )	1048	for (prio = PRIO_MAX - PRIO_MIN + 1; --prio >= min_prio; )
880	if (AvFILLp (coro_ready [prio]) >= 0)	1049	if (AvFILLp (coro_ready [prio]) >= 0)
881	{
882	coro_nready--;
883	return av_shift (coro_ready [prio]);	1050	return av_shift (coro_ready [prio]);
884	}
885		1051
886	return 0;	1052	return 0;
887	}	1053	}
888		1054
889	static void	1055	static int
890	api_ready (SV *coro)	1056	api_ready (SV *coro_sv)
891	{	1057	{
892	dTHX;	1058	dTHX;
		1059	struct coro *coro;
893		1060
894	if (SvROK (coro))	1061	if (SvROK (coro_sv))
895	coro = SvRV (coro);	1062	coro_sv = SvRV (coro_sv);
		1063
		1064	coro = SvSTATE (coro_sv);
		1065
		1066	if (coro->flags & CF_READY)
		1067	return 0;
		1068
		1069	coro->flags \|= CF_READY;
896		1070
897	LOCK;	1071	LOCK;
898	coro_enq (aTHX_ SvREFCNT_inc (coro));	1072	coro_enq (aTHX_ SvREFCNT_inc (coro_sv));
		1073	++coro_nready;
899	UNLOCK;	1074	UNLOCK;
900	}
901		1075
		1076	return 1;
		1077	}
		1078
902	static void	1079	static int
		1080	api_is_ready (SV *coro_sv)
		1081	{
		1082	dTHX;
		1083	return !!(SvSTATE (coro_sv)->flags & CF_READY);
		1084	}
		1085
		1086	static void
903	prepare_schedule (aTHX_ struct transfer_args *ta)	1087	prepare_schedule (pTHX_ struct transfer_args *ta)
904	{	1088	{
905	SV current, prev, *next;	1089	SV prev_sv, next_sv;
		1090
		1091	for (;;)
		1092	{
		1093	LOCK;
		1094	next_sv = coro_deq (aTHX_ PRIO_MIN);
		1095
		1096	/* nothing to schedule: call the idle handler */
		1097	if (!next_sv)
		1098	{
		1099	dSP;
		1100	UNLOCK;
		1101
		1102	ENTER;
		1103	SAVETMPS;
		1104
		1105	PUSHMARK (SP);
		1106	PUTBACK;
		1107	call_sv (get_sv ("Coro::idle", FALSE), G_DISCARD);
		1108
		1109	FREETMPS;
		1110	LEAVE;
		1111	continue;
		1112	}
		1113
		1114	ta->next = SvSTATE (next_sv);
		1115
		1116	/* cannot transfer to destroyed coros, skip and look for next */
		1117	if (ta->next->flags & CF_DESTROYED)
		1118	{
		1119	UNLOCK;
		1120	SvREFCNT_dec (next_sv);
		1121	/* coro_nready is already taken care of by destroy */
		1122	continue;
		1123	}
		1124
		1125	--coro_nready;
		1126	UNLOCK;
		1127	break;
		1128	}
		1129
		1130	/* free this only after the transfer */
		1131	prev_sv = SvRV (coro_current);
		1132	SvRV_set (coro_current, next_sv);
		1133	ta->prev = SvSTATE (prev_sv);
		1134
		1135	assert (ta->next->flags & CF_READY);
		1136	ta->next->flags &= ~CF_READY;
906		1137
907	LOCK;	1138	LOCK;
908
909	current = GvSV (coro_current);
910
911	for (;;)
912	{
913	LOCK;
914
915	next = coro_deq (aTHX_ PRIO_MIN);
916
917	if (next)
918	break;
919
920	UNLOCK;
921
922	{
923	dSP;
924
925	ENTER;
926	SAVETMPS;
927
928	PUSHMARK (SP);
929	PUTBACK;
930	call_sv (GvSV (coro_idle), G_DISCARD);
931
932	FREETMPS;
933	LEAVE;
934	}
935	}
936
937	prev = SvRV (current);
938	SvRV (current) = next;
939
940	/* free this only after the transfer */
941	free_coro_mortal ();	1139	free_coro_mortal (aTHX);
942	coro_mortal = prev;	1140	coro_mortal = prev_sv;
943
944	ta->prev = SvSTATE (prev);
945	ta->next = SvSTATE (next);
946	ta->flags = TRANSFER_SAVE_ALL;
947
948	UNLOCK;	1141	UNLOCK;
949	}	1142	}
950		1143
951	static void	1144	static void
952	prepare_cede (aTHX_ struct transfer_args *ta)	1145	prepare_cede (pTHX_ struct transfer_args *ta)
953	{	1146	{
954	LOCK;	1147	api_ready (coro_current);
955	coro_enq (aTHX_ SvREFCNT_inc (SvRV (GvSV (coro_current))));
956	UNLOCK;
957
958	prepare_schedule (ta);	1148	prepare_schedule (aTHX_ ta);
		1149	}
		1150
		1151	static int
		1152	prepare_cede_notself (pTHX_ struct transfer_args *ta)
		1153	{
		1154	if (coro_nready)
		1155	{
		1156	SV *prev = SvRV (coro_current);
		1157	prepare_schedule (aTHX_ ta);
		1158	api_ready (prev);
		1159	return 1;
		1160	}
		1161	else
		1162	return 0;
959	}	1163	}
960		1164
961	static void	1165	static void
962	api_schedule (void)	1166	api_schedule (void)
963	{	1167	{
964	dTHX;	1168	dTHX;
965	struct transfer_args ta;	1169	struct transfer_args ta;
966		1170
967	prepare_schedule (&ta);	1171	prepare_schedule (aTHX_ &ta);
968	TRANSFER (ta);	1172	TRANSFER (ta);
969	}	1173	}
970		1174
971	static void	1175	static int
972	api_cede (void)	1176	api_cede (void)
973	{	1177	{
974	dTHX;	1178	dTHX;
975	struct transfer_args ta;	1179	struct transfer_args ta;
976		1180
977	prepare_cede (&ta);	1181	prepare_cede (aTHX_ &ta);
		1182
		1183	if (ta.prev != ta.next)
		1184	{
978	TRANSFER (ta);	1185	TRANSFER (ta);
		1186	return 1;
		1187	}
		1188	else
		1189	return 0;
		1190	}
		1191
		1192	static int
		1193	api_cede_notself (void)
		1194	{
		1195	dTHX;
		1196	struct transfer_args ta;
		1197
		1198	if (prepare_cede_notself (aTHX_ &ta))
		1199	{
		1200	TRANSFER (ta);
		1201	return 1;
		1202	}
		1203	else
		1204	return 0;
979	}	1205	}
980		1206
981	MODULE = Coro::State PACKAGE = Coro::State	1207	MODULE = Coro::State PACKAGE = Coro::State
982		1208
983	PROTOTYPES: DISABLE	1209	PROTOTYPES: DISABLE
…		…
989	#endif	1215	#endif
990	BOOT_PAGESIZE;	1216	BOOT_PAGESIZE;
991		1217
992	coro_state_stash = gv_stashpv ("Coro::State", TRUE);	1218	coro_state_stash = gv_stashpv ("Coro::State", TRUE);
993		1219
994	newCONSTSUB (coro_state_stash, "SAVE_DEFAV", newSViv (TRANSFER_SAVE_DEFAV));	1220	newCONSTSUB (coro_state_stash, "SAVE_DEFAV", newSViv (CORO_SAVE_DEFAV));
995	newCONSTSUB (coro_state_stash, "SAVE_DEFSV", newSViv (TRANSFER_SAVE_DEFSV));	1221	newCONSTSUB (coro_state_stash, "SAVE_DEFSV", newSViv (CORO_SAVE_DEFSV));
996	newCONSTSUB (coro_state_stash, "SAVE_ERRSV", newSViv (TRANSFER_SAVE_ERRSV));	1222	newCONSTSUB (coro_state_stash, "SAVE_ERRSV", newSViv (CORO_SAVE_ERRSV));
		1223	newCONSTSUB (coro_state_stash, "SAVE_IRSSV", newSViv (CORO_SAVE_IRSSV));
		1224	newCONSTSUB (coro_state_stash, "SAVE_DEFFH", newSViv (CORO_SAVE_DEFFH));
		1225	newCONSTSUB (coro_state_stash, "SAVE_DEF", newSViv (CORO_SAVE_DEF));
		1226	newCONSTSUB (coro_state_stash, "SAVE_ALL", newSViv (CORO_SAVE_ALL));
997		1227
998	main_mainstack = PL_mainstack;	1228	main_mainstack = PL_mainstack;
		1229	main_top_env = PL_top_env;
		1230
		1231	while (main_top_env->je_prev)
		1232	main_top_env = main_top_env->je_prev;
999		1233
1000	coroapi.ver = CORO_API_VERSION;	1234	coroapi.ver = CORO_API_VERSION;
1001	coroapi.transfer = api_transfer;	1235	coroapi.transfer = api_transfer;
1002
1003	Newz (0, main_stack, 1, coro_stack);
1004	main_stack->idle_sp = (void *)-1;
1005		1236
1006	assert (("PRIO_NORMAL must be 0", !PRIO_NORMAL));	1237	assert (("PRIO_NORMAL must be 0", !PRIO_NORMAL));
1007	}	1238	}
1008		1239
1009	SV *	1240	SV *
…		…
1014	HV *hv;	1245	HV *hv;
1015	int i;	1246	int i;
1016		1247
1017	Newz (0, coro, 1, struct coro);	1248	Newz (0, coro, 1, struct coro);
1018	coro->args = newAV ();	1249	coro->args = newAV ();
		1250	coro->save = CORO_SAVE_DEF;
		1251	coro->flags = CF_NEW;
1019		1252
		1253	if (coro_first) coro_first->prev = coro;
		1254	coro->next = coro_first;
		1255	coro_first = coro;
		1256
1020	hv = newHV ();	1257	coro->hv = hv = newHV ();
1021	sv_magicext ((SV )hv, 0, PERL_MAGIC_ext, &coro_state_vtbl, (char )coro, 0)->mg_flags \|= MGf_DUP;	1258	sv_magicext ((SV )hv, 0, PERL_MAGIC_ext, &coro_state_vtbl, (char )coro, 0)->mg_flags \|= MGf_DUP;
1022	RETVAL = sv_bless (newRV_noinc ((SV *)hv), gv_stashpv (klass, 1));	1259	RETVAL = sv_bless (newRV_noinc ((SV *)hv), gv_stashpv (klass, 1));
1023		1260
1024	for (i = 1; i < items; i++)	1261	for (i = 1; i < items; i++)
1025	av_push (coro->args, newSVsv (ST (i)));	1262	av_push (coro->args, newSVsv (ST (i)));
1026
1027	coro->stack = main_stack;
1028	/coro->mainstack = 0; //actual work is done inside transfer /
1029	/coro->stack = 0;/
1030	}	1263	}
1031	OUTPUT:	1264	OUTPUT:
1032	RETVAL	1265	RETVAL
1033		1266
		1267	int
		1268	save (SV *coro, int new_save = -1)
		1269	CODE:
		1270	RETVAL = api_save (coro, new_save);
		1271	OUTPUT:
		1272	RETVAL
		1273
		1274	int
		1275	save_also (SV *coro_sv, int save_also)
		1276	CODE:
		1277	{
		1278	struct coro *coro = SvSTATE (coro_sv);
		1279	RETVAL = coro->save;
		1280	coro->save \|= save_also;
		1281	}
		1282	OUTPUT:
		1283	RETVAL
		1284
1034	void	1285	void
1035	transfer (...)	1286	_set_stacklevel (...)
1036	ALIAS:	1287	ALIAS:
1037	Coro::schedule = 1	1288	Coro::State::transfer = 1
1038	Coro::cede = 2	1289	Coro::schedule = 2
1039	_set_stacklevel = 3	1290	Coro::cede = 3
		1291	Coro::cede_notself = 4
1040	CODE:	1292	CODE:
1041	{	1293	{
1042	struct transfer_args ta;	1294	struct transfer_args ta;
1043		1295
1044	switch (ix)	1296	switch (ix)
1045	{	1297	{
1046	case 0:	1298	case 0:
1047	if (items != 3)	1299	ta.prev = (struct coro )INT2PTR (coro_cctx , SvIV (ST (0)));
1048	croak ("Coro::State::transfer(prev,next,flags) expects three arguments, not %d", items);	1300	ta.next = 0;
1049
1050	prepare_transfer (&ta, ST (0), ST (1), SvIV (ST (2)));
1051	break;	1301	break;
1052		1302
1053	case 1:	1303	case 1:
1054	prepare_schedule (&ta);	1304	if (items != 2)
		1305	croak ("Coro::State::transfer (prev,next) expects two arguments, not %d", items);
		1306
		1307	prepare_transfer (aTHX_ &ta, ST (0), ST (1));
1055	break;	1308	break;
1056		1309
1057	case 2:	1310	case 2:
1058	prepare_cede (&ta);	1311	prepare_schedule (aTHX_ &ta);
1059	break;	1312	break;
1060		1313
1061	case 3:	1314	case 3:
1062	ta.prev = (struct coro )INT2PTR (coro_stack , SvIV (ST (0)));	1315	prepare_cede (aTHX_ &ta);
1063	ta.next = 0;	1316	break;
1064	ta.flags = TRANSFER_SET_STACKLEVEL;	1317
		1318	case 4:
		1319	if (!prepare_cede_notself (aTHX_ &ta))
		1320	XSRETURN_EMPTY;
		1321
1065	break;	1322	break;
1066	}	1323	}
1067		1324
		1325	BARRIER;
1068	TRANSFER (ta);	1326	TRANSFER (ta);
1069	}
1070		1327
1071	void	1328	if (GIMME_V != G_VOID && ta.next != ta.prev)
1072	_clone_state_from (SV dst, SV src)	1329	XSRETURN_YES;
		1330	}
		1331
		1332	bool
		1333	_destroy (SV *coro_sv)
1073	CODE:	1334	CODE:
1074	{	1335	RETVAL = coro_state_destroy (aTHX_ SvSTATE (coro_sv));
1075	struct coro *coro_src = SvSTATE (src);	1336	OUTPUT:
1076		1337	RETVAL
1077	sv_unmagic (SvRV (dst), PERL_MAGIC_ext);
1078
1079	++coro_src->refcnt;
1080	sv_magicext (SvRV (dst), 0, PERL_MAGIC_ext, &coro_state_vtbl, (char *)coro_src, 0)->mg_flags \|= MGf_DUP;
1081	}
1082
1083	void
1084	_nonlocal_goto (IV nextop)
1085	CODE:
1086	/* uuh, somebody will kill me again for this */
1087	PL_op->op_next = INT2PTR (OP *, nextop);
1088		1338
1089	void	1339	void
1090	_exit (code)	1340	_exit (code)
1091	int code	1341	int code
1092	PROTOTYPE: $	1342	PROTOTYPE: $
1093	CODE:	1343	CODE:
1094	_exit (code);	1344	_exit (code);
1095		1345
1096	MODULE = Coro::State PACKAGE = Coro::Cont	1346	int
		1347	cctx_stacksize (int new_stacksize = 0)
		1348	CODE:
		1349	RETVAL = coro_stacksize;
		1350	if (new_stacksize)
		1351	coro_stacksize = new_stacksize;
		1352	OUTPUT:
		1353	RETVAL
		1354
		1355	int
		1356	cctx_count ()
		1357	CODE:
		1358	RETVAL = cctx_count;
		1359	OUTPUT:
		1360	RETVAL
		1361
		1362	int
		1363	cctx_idle ()
		1364	CODE:
		1365	RETVAL = cctx_idle;
		1366	OUTPUT:
		1367	RETVAL
1097		1368
1098	void	1369	void
1099	yield (...)	1370	list ()
1100	PROTOTYPE: @	1371	PPCODE:
		1372	{
		1373	struct coro *coro;
		1374	for (coro = coro_first; coro; coro = coro->next)
		1375	if (coro->hv)
		1376	XPUSHs (sv_2mortal (newRV_inc ((SV *)coro->hv)));
		1377	}
		1378
		1379	void
		1380	_eval (Coro::State coro, SV *coderef)
		1381	CODE:
		1382	{
		1383	if (coro->mainstack)
		1384	{
		1385	struct coro temp;
		1386	Zero (&temp, 1, struct coro);
		1387	temp.save = CORO_SAVE_ALL;
		1388
		1389	if (!(coro->flags & CF_RUNNING))
		1390	{
		1391	save_perl (aTHX_ &temp);
		1392	load_perl (aTHX_ coro);
		1393	}
		1394
		1395	{
		1396	dSP;
		1397	ENTER;
		1398	SAVETMPS;
		1399	PUSHMARK (SP);
		1400	PUTBACK;
		1401	call_sv (coderef, G_KEEPERR \| G_EVAL \| G_VOID \| G_DISCARD);
		1402	SPAGAIN;
		1403	FREETMPS;
		1404	LEAVE;
		1405	PUTBACK;
		1406	}
		1407
		1408	if (!(coro->flags & CF_RUNNING))
		1409	{
		1410	save_perl (aTHX_ coro);
		1411	load_perl (aTHX_ &temp);
		1412	}
		1413	}
		1414	}
		1415
		1416	SV *
		1417	is_ready (Coro::State coro)
		1418	PROTOTYPE: $
		1419	ALIAS:
		1420	is_ready = CF_READY
		1421	is_running = CF_RUNNING
		1422	is_new = CF_NEW
		1423	is_destroyed = CF_DESTROYED
		1424	CODE:
		1425	RETVAL = boolSV (coro->flags & ix);
		1426	OUTPUT:
		1427	RETVAL
		1428
		1429	IV
		1430	rss (Coro::State coro)
		1431	PROTOTYPE: $
1101	CODE:	1432	CODE:
1102	{	1433	RETVAL = coro_rss (coro);
1103	SV *yieldstack;	1434	OUTPUT:
1104	SV *sv;	1435	RETVAL
1105	AV *defav = GvAV (PL_defgv);
1106	struct coro prev, next;
1107		1436
1108	yieldstack = *hv_fetch (
1109	(HV *)SvRV (GvSV (coro_current)),
1110	"yieldstack", sizeof ("yieldstack") - 1,
1111	0
1112	);
1113
1114	/* set up @_ -- ugly */
1115	av_clear (defav);
1116	av_fill (defav, items - 1);
1117	while (items--)
1118	av_store (defav, items, SvREFCNT_inc (ST(items)));
1119
1120	sv = av_pop ((AV *)SvRV (yieldstack));
1121	prev = SvSTATE (av_fetch ((AV )SvRV (sv), 0, 0));
1122	next = SvSTATE (av_fetch ((AV )SvRV (sv), 1, 0));
1123	SvREFCNT_dec (sv);
1124
1125	coro_state_transfer (aTHX_ prev, next, 0);
1126	}
1127		1437
1128	MODULE = Coro::State PACKAGE = Coro	1438	MODULE = Coro::State PACKAGE = Coro
1129		1439
1130	BOOT:	1440	BOOT:
1131	{	1441	{
…		…
1138	newCONSTSUB (coro_stash, "PRIO_NORMAL", newSViv (PRIO_NORMAL));	1448	newCONSTSUB (coro_stash, "PRIO_NORMAL", newSViv (PRIO_NORMAL));
1139	newCONSTSUB (coro_stash, "PRIO_LOW", newSViv (PRIO_LOW));	1449	newCONSTSUB (coro_stash, "PRIO_LOW", newSViv (PRIO_LOW));
1140	newCONSTSUB (coro_stash, "PRIO_IDLE", newSViv (PRIO_IDLE));	1450	newCONSTSUB (coro_stash, "PRIO_IDLE", newSViv (PRIO_IDLE));
1141	newCONSTSUB (coro_stash, "PRIO_MIN", newSViv (PRIO_MIN));	1451	newCONSTSUB (coro_stash, "PRIO_MIN", newSViv (PRIO_MIN));
1142		1452
1143	coro_current = gv_fetchpv ("Coro::current", TRUE, SVt_PV);	1453	coro_current = get_sv ("Coro::current", FALSE);
1144	coro_idle = gv_fetchpv ("Coro::idle" , TRUE, SVt_PV);	1454	SvREADONLY_on (coro_current);
1145		1455
1146	for (i = PRIO_MAX - PRIO_MIN + 1; i--; )	1456	for (i = PRIO_MAX - PRIO_MIN + 1; i--; )
1147	coro_ready[i] = newAV ();	1457	coro_ready[i] = newAV ();
1148		1458
1149	{	1459	{
1150	SV *sv = perl_get_sv("Coro::API", 1);	1460	SV *sv = perl_get_sv("Coro::API", 1);
1151		1461
1152	coroapi.schedule = api_schedule;	1462	coroapi.schedule = api_schedule;
		1463	coroapi.save = api_save;
1153	coroapi.cede = api_cede;	1464	coroapi.cede = api_cede;
		1465	coroapi.cede_notself = api_cede_notself;
1154	coroapi.ready = api_ready;	1466	coroapi.ready = api_ready;
		1467	coroapi.is_ready = api_is_ready;
1155	coroapi.nready = &coro_nready;	1468	coroapi.nready = &coro_nready;
1156	coroapi.current = coro_current;	1469	coroapi.current = coro_current;
1157		1470
1158	GCoroAPI = &coroapi;	1471	GCoroAPI = &coroapi;
1159	sv_setiv (sv, (IV)&coroapi);	1472	sv_setiv (sv, (IV)&coroapi);
1160	SvREADONLY_on (sv);	1473	SvREADONLY_on (sv);
1161	}	1474	}
1162	}	1475	}
		1476
		1477	void
		1478	_set_current (SV *current)
		1479	PROTOTYPE: $
		1480	CODE:
		1481	SvREFCNT_dec (SvRV (coro_current));
		1482	SvRV_set (coro_current, SvREFCNT_inc (SvRV (current)));
1163		1483
1164	int	1484	int
1165	prio (Coro::State coro, int newprio = 0)	1485	prio (Coro::State coro, int newprio = 0)
1166	ALIAS:	1486	ALIAS:
1167	nice = 1	1487	nice = 1
…		…
1170	RETVAL = coro->prio;	1490	RETVAL = coro->prio;
1171		1491
1172	if (items > 1)	1492	if (items > 1)
1173	{	1493	{
1174	if (ix)	1494	if (ix)
1175	newprio += coro->prio;	1495	newprio = coro->prio - newprio;
1176		1496
1177	if (newprio < PRIO_MIN) newprio = PRIO_MIN;	1497	if (newprio < PRIO_MIN) newprio = PRIO_MIN;
1178	if (newprio > PRIO_MAX) newprio = PRIO_MAX;	1498	if (newprio > PRIO_MAX) newprio = PRIO_MAX;
1179		1499
1180	coro->prio = newprio;	1500	coro->prio = newprio;
1181	}	1501	}
1182	}	1502	}
		1503	OUTPUT:
		1504	RETVAL
1183		1505
1184	void	1506	SV *
1185	ready (SV *self)	1507	ready (SV *self)
1186	PROTOTYPE: $	1508	PROTOTYPE: $
1187	CODE:	1509	CODE:
1188	api_ready (self);	1510	RETVAL = boolSV (api_ready (self));
		1511	OUTPUT:
		1512	RETVAL
1189		1513
1190	int	1514	int
1191	nready (...)	1515	nready (...)
1192	PROTOTYPE:	1516	PROTOTYPE:
1193	CODE:	1517	CODE:
…		…
1199		1523
1200	SV *	1524	SV *
1201	_get_state ()	1525	_get_state ()
1202	CODE:	1526	CODE:
1203	{	1527	{
1204	struct {	1528	struct io_state *data;
1205	int errorno;
1206	int laststype;
1207	int laststatval;
1208	Stat_t statcache;
1209	} data;
1210		1529
		1530	RETVAL = newSV (sizeof (struct io_state));
		1531	data = (struct io_state *)SvPVX (RETVAL);
		1532	SvCUR_set (RETVAL, sizeof (struct io_state));
		1533	SvPOK_only (RETVAL);
		1534
1211	data.errorno = errno;	1535	data->errorno = errno;
1212	data.laststype = PL_laststype;	1536	data->laststype = PL_laststype;
1213	data.laststatval = PL_laststatval;	1537	data->laststatval = PL_laststatval;
1214	data.statcache = PL_statcache;	1538	data->statcache = PL_statcache;
1215
1216	RETVAL = newSVpvn ((char *)&data, sizeof data);
1217	}	1539	}
1218	OUTPUT:	1540	OUTPUT:
1219	RETVAL	1541	RETVAL
1220		1542
1221	void	1543	void
1222	_set_state (char *data_)	1544	_set_state (char *data_)
1223	PROTOTYPE: $	1545	PROTOTYPE: $
1224	CODE:	1546	CODE:
1225	{	1547	{
1226	struct {	1548	struct io_state data = (void )data_;
1227	int errorno;
1228	int laststype;
1229	int laststatval;
1230	Stat_t statcache;
1231	} data = (void )data_;
1232		1549
1233	errno = data->errorno;	1550	errno = data->errorno;
1234	PL_laststype = data->laststype;	1551	PL_laststype = data->laststype;
1235	PL_laststatval = data->laststatval;	1552	PL_laststatval = data->laststatval;
1236	PL_statcache = data->statcache;	1553	PL_statcache = data->statcache;
1237	}	1554	}
		1555

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Comparing Coro/Coro/State.xs (file contents): Revision 1.92 by root, Sun Nov 26 02:16:19 2006 UTC vs. Revision 1.157 by root, Fri Sep 21 02:01:13 2007 UTC

Diff Legend

Comparing Coro/Coro/State.xs (file contents):
Revision 1.92 by root, Sun Nov 26 02:16:19 2006 UTC vs.
Revision 1.157 by root, Fri Sep 21 02:01:13 2007 UTC