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

Comparing Coro/Coro/State.xs (file contents):
Revision 1.98 by root, Sun Nov 26 21:25:53 2006 UTC vs.
Revision 1.165 by root, Wed Sep 26 19:26:48 2007 UTC

…		…
1	#include "libcoro/coro.c"	1	#include "libcoro/coro.c"
		2
		3	#define PERL_NO_GET_CONTEXT
2		4
3	#include "EXTERN.h"	5	#include "EXTERN.h"
4	#include "perl.h"	6	#include "perl.h"
5	#include "XSUB.h"	7	#include "XSUB.h"
6		8
7	#include "patchlevel.h"	9	#include "patchlevel.h"
8		10
9	#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)
10	# ifndef PL_ppaddr	55	# ifndef PL_ppaddr
11	# define PL_ppaddr ppaddr	56	# define PL_ppaddr ppaddr
12	# endif	57	# endif
13	# ifndef call_sv	58	# ifndef call_sv
14	# define call_sv perl_call_sv	59	# define call_sv perl_call_sv
25	# ifndef IS_PADCONST	70	# ifndef IS_PADCONST
26	# define IS_PADCONST(v) 0	71	# define IS_PADCONST(v) 0
27	# endif	72	# endif
28	#endif	73	#endif
29		74
30	#include <stdio.h>	75	/* 5.8.7 */
31	#include <errno.h>	76	#ifndef SvRV_set
		77	# define SvRV_set(s,v) SvRV(s) = (v)
		78	#endif
32		79
33	#if !__i386 && !__x86_64 && !__powerpc && !__m68k && !__alpha && !__mips && !__sparc64	80	#if !__i386 && !__x86_64 && !__powerpc && !__m68k && !__alpha && !__mips && !__sparc64
34	# undef STACKGUARD	81	# undef CORO_STACKGUARD
35	#endif
36
37	#ifndef STACKGUARD
38	# define STACKGUARD 0
39	#endif
40
41	#ifdef HAVE_MMAP
42	# include <unistd.h>
43	# include <sys/mman.h>
44	# ifndef MAP_ANONYMOUS
45	# ifdef MAP_ANON
46	# define MAP_ANONYMOUS MAP_ANON
47	# else
48	# undef HAVE_MMAP
49	# endif
50	# endif	82	#endif
51	# include <limits.h>	83
52	# ifndef PAGESIZE	84	#ifndef CORO_STACKGUARD
53	# define PAGESIZE pagesize	85	# define CORO_STACKGUARD 0
54	# define BOOT_PAGESIZE pagesize = sysconf (_SC_PAGESIZE)
55	static long pagesize;
56	# else
57	# define BOOT_PAGESIZE
58	# endif	86	#endif
59	#endif
60		87
61	/* The next macro should declare a variable stacklevel that contains and approximation	88	/* prefer perl internal functions over our own? */
62	* to the current C stack pointer. Its property is that it changes with each call	89	#ifndef CORO_PREFER_PERL_FUNCTIONS
63	* and should be unique. */	90	# define CORO_PREFER_PERL_FUNCTIONS 0
		91	#endif
		92
		93	/* The next macros try to return the current stack pointer, in an as
		94	* portable way as possible. */
64	#define dSTACKLEVEL int stacklevel	95	#define dSTACKLEVEL volatile char stacklevel
65	#define STACKLEVEL ((void *)&stacklevel)	96	#define STACKLEVEL ((void *)&stacklevel)
66		97
67	#define IN_DESTRUCT (PL_main_cv == Nullcv)	98	#define IN_DESTRUCT (PL_main_cv == Nullcv)
68		99
		100	#if __GNUC__ >= 3
		101	# define attribute(x) __attribute__(x)
		102	# define BARRIER __asm__ __volatile__ ("" : : : "memory")
		103	#else
		104	# define attribute(x)
		105	# define BARRIER
		106	#endif
		107
		108	#define NOINLINE attribute ((noinline))
		109
69	#include "CoroAPI.h"	110	#include "CoroAPI.h"
70
71	#define TRANSFER_SET_STACKLEVEL 0x8bfbfbfb /* magic cookie */
72		111
73	#ifdef USE_ITHREADS	112	#ifdef USE_ITHREADS
74	static perl_mutex coro_mutex;	113	static perl_mutex coro_mutex;
75	# define LOCK do { MUTEX_LOCK (&coro_mutex); } while (0)	114	# define LOCK do { MUTEX_LOCK (&coro_mutex); } while (0)
76	# define UNLOCK do { MUTEX_UNLOCK (&coro_mutex); } while (0)	115	# define UNLOCK do { MUTEX_UNLOCK (&coro_mutex); } while (0)
77	#else	116	#else
78	# define LOCK (void)0	117	# define LOCK (void)0
79	# define UNLOCK (void)0	118	# define UNLOCK (void)0
80	#endif	119	#endif
81		120
		121	/* helper storage struct for Coro::AIO */
		122	struct io_state
		123	{
		124	int errorno;
		125	I32 laststype;
		126	int laststatval;
		127	Stat_t statcache;
		128	};
		129
		130	static size_t coro_stacksize = CORO_STACKSIZE;
82	static struct CoroAPI coroapi;	131	static struct CoroAPI coroapi;
83	static AV main_mainstack; / used to differentiate between $main and others */	132	static AV main_mainstack; / used to differentiate between $main and others */
		133	static JMPENV *main_top_env;
84	static HV coro_state_stash, coro_stash;	134	static HV coro_state_stash, coro_stash;
85	static SV coro_mortal; / will be freed after next transfer */	135	static SV coro_mortal; / will be freed after next transfer */
86		136
		137	/* async_pool helper stuff */
		138	static SV *sv_pool_rss;
		139	static SV *sv_pool_size;
		140	static AV *av_async_pool;
		141
		142	static struct coro_cctx *cctx_first;
		143	static int cctx_count, cctx_idle;
		144
		145	enum {
		146	CC_MAPPED = 0x01,
		147	CC_TRACE = 0x02,
		148	CC_NOREUSE = 0x04, /* throw this away after tracing */
		149	};
		150
87	/* this is a structure representing a c-level coroutine */	151	/* this is a structure representing a c-level coroutine */
88	typedef struct coro_stack {	152	typedef struct coro_cctx {
89	struct coro_stack *next;	153	struct coro_cctx *next;
90		154
91	/* the stack */	155	/* the stack */
92	void *sptr;	156	void *sptr;
93	long ssize; /* positive == mmap, otherwise malloc */	157	size_t ssize;
94		158
95	/* cpu state */	159	/* cpu state */
96	void idle_sp; / sp of top-level transfer/schedule/cede call */	160	void idle_sp; / sp of top-level transfer/schedule/cede call */
		161	JMPENV idle_te; / same as idle_sp, but for top_env, TODO: remove once stable */
97	JMPENV *top_env;	162	JMPENV *top_env;
98	coro_context cctx;	163	coro_context cctx;
99	} coro_stack;	164
		165	#if CORO_USE_VALGRIND
		166	int valgrind_id;
		167	#endif
		168	unsigned char flags;
		169	} coro_cctx;
		170
		171	enum {
		172	CF_RUNNING = 0x0001, /* coroutine is running */
		173	CF_READY = 0x0002, /* coroutine is ready */
		174	CF_NEW = 0x0004, /* has never been switched to */
		175	CF_DESTROYED = 0x0008, /* coroutine data has been freed */
		176	};
100		177
101	/* this is a structure representing a perl-level coroutine */	178	/* this is a structure representing a perl-level coroutine */
102	struct coro {	179	struct coro {
103	/* the c coroutine allocated to this perl coroutine, if any */	180	/* the c coroutine allocated to this perl coroutine, if any */
104	coro_stack *stack;	181	coro_cctx *cctx;
105		182
106	/* data associated with this coroutine (initial args) */	183	/* data associated with this coroutine (initial args) */
107	AV *args;	184	AV *args;
108	int refcnt;	185	int refcnt;
		186	int save; /* CORO_SAVE flags */
		187	int flags; /* CF_ flags */
109		188
110	/* optionally saved, might be zero */	189	/* optionally saved, might be zero */
111	AV *defav;	190	AV defav; / @_ */
112	SV *defsv;	191	SV defsv; / $_ */
113	SV *errsv;	192	SV errsv; / $@ */
		193	GV deffh; / default filehandle */
		194	SV irssv; / $/ */
		195	SV irssv_sv; / real $/ cache */
114		196
115	/* saved global state not related to stacks */	197	#define VAR(name,type) type name;
116	U8 dowarn;	198	# include "state.h"
117	I32 in_eval;	199	#undef VAR
118
119	/* the stacks and related info (callchain etc..) */
120	PERL_SI *curstackinfo;
121	AV *curstack;
122	AV *mainstack;
123	SV **stack_sp;
124	OP *op;
125	SV **curpad;
126	AV *comppad;
127	CV *compcv;
128	SV **stack_base;
129	SV **stack_max;
130	SV **tmps_stack;
131	I32 tmps_floor;
132	I32 tmps_ix;
133	I32 tmps_max;
134	I32 *markstack;
135	I32 *markstack_ptr;
136	I32 *markstack_max;
137	I32 *scopestack;
138	I32 scopestack_ix;
139	I32 scopestack_max;
140	ANY *savestack;
141	I32 savestack_ix;
142	I32 savestack_max;
143	OP **retstack;
144	I32 retstack_ix;
145	I32 retstack_max;
146	PMOP *curpm;
147	COP *curcop;
148		200
149	/* coro process data */	201	/* coro process data */
150	int prio;	202	int prio;
		203
		204	/* linked list */
		205	struct coro next, prev;
		206	HV hv; / the perl hash associated with this coro, if any */
151	};	207	};
152		208
153	typedef struct coro *Coro__State;	209	typedef struct coro *Coro__State;
154	typedef struct coro *Coro__State_or_hashref;	210	typedef struct coro *Coro__State_or_hashref;
155		211
		212	/ Coro ******************************************************************/
		213
		214	#define PRIO_MAX 3
		215	#define PRIO_HIGH 1
		216	#define PRIO_NORMAL 0
		217	#define PRIO_LOW -1
		218	#define PRIO_IDLE -3
		219	#define PRIO_MIN -4
		220
		221	/* for Coro.pm */
		222	static SV *coro_current;
		223	static AV *coro_ready [PRIO_MAX-PRIO_MIN+1];
		224	static int coro_nready;
		225	static struct coro *coro_first;
		226
		227	/ lowlevel stuff ********************************************************/
		228
156	static AV *	229	static AV *
157	coro_clone_padlist (CV *cv)	230	coro_clone_padlist (pTHX_ CV *cv)
158	{	231	{
159	AV *padlist = CvPADLIST (cv);	232	AV *padlist = CvPADLIST (cv);
160	AV newpadlist, newpad;	233	AV newpadlist, newpad;
161		234
162	newpadlist = newAV ();	235	newpadlist = newAV ();
163	AvREAL_off (newpadlist);	236	AvREAL_off (newpadlist);
164	#if PERL_VERSION < 9	237	#if PERL_VERSION_ATLEAST (5,9,0)
		238	Perl_pad_push (aTHX_ padlist, AvFILLp (padlist) + 1);
		239	#else
165	Perl_pad_push (aTHX_ padlist, AvFILLp (padlist) + 1, 1);	240	Perl_pad_push (aTHX_ padlist, AvFILLp (padlist) + 1, 1);
166	#else
167	Perl_pad_push (aTHX_ padlist, AvFILLp (padlist) + 1);
168	#endif	241	#endif
169	newpad = (AV *)AvARRAY (padlist)[AvFILLp (padlist)];	242	newpad = (AV *)AvARRAY (padlist)[AvFILLp (padlist)];
170	--AvFILLp (padlist);	243	--AvFILLp (padlist);
171		244
172	av_store (newpadlist, 0, SvREFCNT_inc (*av_fetch (padlist, 0, FALSE)));	245	av_store (newpadlist, 0, SvREFCNT_inc (*av_fetch (padlist, 0, FALSE)));
…		…
174		247
175	return newpadlist;	248	return newpadlist;
176	}	249	}
177		250
178	static void	251	static void
179	free_padlist (AV *padlist)	252	free_padlist (pTHX_ AV *padlist)
180	{	253	{
181	/* may be during global destruction */	254	/* may be during global destruction */
182	if (SvREFCNT (padlist))	255	if (SvREFCNT (padlist))
183	{	256	{
184	I32 i = AvFILLp (padlist);	257	I32 i = AvFILLp (padlist);
…		…
205	AV *padlist;	278	AV *padlist;
206	AV av = (AV )mg->mg_obj;	279	AV av = (AV )mg->mg_obj;
207		280
208	/* casting is fun. */	281	/* casting is fun. */
209	while (&PL_sv_undef != (SV )(padlist = (AV )av_pop (av)))	282	while (&PL_sv_undef != (SV )(padlist = (AV )av_pop (av)))
210	free_padlist (padlist);	283	free_padlist (aTHX_ padlist);
211		284
212	SvREFCNT_dec (av);	285	SvREFCNT_dec (av);
213		286
214	return 0;	287	return 0;
215	}	288	}
216		289
217	#define PERL_MAGIC_coro PERL_MAGIC_ext	290	#define PERL_MAGIC_coro PERL_MAGIC_ext
218		291
219	static MGVTBL vtbl_coro = {0, 0, 0, 0, coro_cv_free};	292	static MGVTBL vtbl_coro = {0, 0, 0, 0, coro_cv_free};
220		293
		294	#define CORO_MAGIC(cv) \
		295	SvMAGIC (cv) \
		296	? SvMAGIC (cv)->mg_type == PERL_MAGIC_coro \
		297	? SvMAGIC (cv) \
		298	: mg_find ((SV *)cv, PERL_MAGIC_coro) \
		299	: 0
		300
221	/* the next two functions merely cache the padlists */	301	/* the next two functions merely cache the padlists */
222	static void	302	static void
223	get_padlist (CV *cv)	303	get_padlist (pTHX_ CV *cv)
224	{	304	{
225	MAGIC mg = mg_find ((SV )cv, PERL_MAGIC_coro);	305	MAGIC *mg = CORO_MAGIC (cv);
		306	AV *av;
226		307
227	if (mg && AvFILLp ((AV *)mg->mg_obj) >= 0)	308	if (mg && AvFILLp ((av = (AV *)mg->mg_obj)) >= 0)
228	CvPADLIST (cv) = (AV )av_pop ((AV )mg->mg_obj);	309	CvPADLIST (cv) = (AV *)AvARRAY (av)[AvFILLp (av)--];
229	else	310	else
230	{	311	{
231	#if 0	312	#if CORO_PREFER_PERL_FUNCTIONS
232	/* this is probably cleaner, but also slower? */	313	/* this is probably cleaner, but also slower? */
233	CV *cp = Perl_cv_clone (cv);	314	CV *cp = Perl_cv_clone (cv);
234	CvPADLIST (cv) = CvPADLIST (cp);	315	CvPADLIST (cv) = CvPADLIST (cp);
235	CvPADLIST (cp) = 0;	316	CvPADLIST (cp) = 0;
236	SvREFCNT_dec (cp);	317	SvREFCNT_dec (cp);
237	#else	318	#else
238	CvPADLIST (cv) = coro_clone_padlist (cv);	319	CvPADLIST (cv) = coro_clone_padlist (aTHX_ cv);
239	#endif	320	#endif
240	}	321	}
241	}	322	}
242		323
243	static void	324	static void
244	put_padlist (CV *cv)	325	put_padlist (pTHX_ CV *cv)
245	{	326	{
246	MAGIC mg = mg_find ((SV )cv, PERL_MAGIC_coro);	327	MAGIC *mg = CORO_MAGIC (cv);
		328	AV *av;
247		329
248	if (!mg)	330	if (!mg)
249	{	331	{
250	sv_magic ((SV *)cv, 0, PERL_MAGIC_coro, 0, 0);	332	sv_magic ((SV *)cv, 0, PERL_MAGIC_coro, 0, 0);
251	mg = mg_find ((SV *)cv, PERL_MAGIC_coro);	333	mg = mg_find ((SV *)cv, PERL_MAGIC_coro);
252	mg->mg_virtual = &vtbl_coro;	334	mg->mg_virtual = &vtbl_coro;
253	mg->mg_obj = (SV *)newAV ();	335	mg->mg_obj = (SV *)newAV ();
254	}	336	}
255		337
256	av_push ((AV )mg->mg_obj, (SV )CvPADLIST (cv));	338	av = (AV *)mg->mg_obj;
		339
		340	if (AvFILLp (av) >= AvMAX (av))
		341	av_extend (av, AvMAX (av) + 1);
		342
		343	AvARRAY (av)[++AvFILLp (av)] = (SV *)CvPADLIST (cv);
257	}	344	}
		345
		346	/ load & save, init *****************************************************/
258		347
259	#define SB do {	348	#define SB do {
260	#define SE } while (0)	349	#define SE } while (0)
261		350
262	#define LOAD(state) load_state((state));
263	#define SAVE(state,flags) save_state((state),(flags));
264
265	#define REPLACE_SV(sv,val) SB SvREFCNT_dec(sv); (sv) = (val); (val) = 0; SE	351	#define REPLACE_SV(sv,val) SB SvREFCNT_dec (sv); (sv) = (val); (val) = 0; SE
266		352
267	static void	353	static void
268	load_state(Coro__State c)	354	load_perl (pTHX_ Coro__State c)
269	{	355	{
270	PL_dowarn = c->dowarn;	356	#define VAR(name,type) PL_ ## name = c->name;
271	PL_in_eval = c->in_eval;	357	# include "state.h"
272		358	#undef VAR
273	PL_curstackinfo = c->curstackinfo;
274	PL_curstack = c->curstack;
275	PL_mainstack = c->mainstack;
276	PL_stack_sp = c->stack_sp;
277	PL_op = c->op;
278	PL_curpad = c->curpad;
279	PL_comppad = c->comppad;
280	PL_compcv = c->compcv;
281	PL_stack_base = c->stack_base;
282	PL_stack_max = c->stack_max;
283	PL_tmps_stack = c->tmps_stack;
284	PL_tmps_floor = c->tmps_floor;
285	PL_tmps_ix = c->tmps_ix;
286	PL_tmps_max = c->tmps_max;
287	PL_markstack = c->markstack;
288	PL_markstack_ptr = c->markstack_ptr;
289	PL_markstack_max = c->markstack_max;
290	PL_scopestack = c->scopestack;
291	PL_scopestack_ix = c->scopestack_ix;
292	PL_scopestack_max = c->scopestack_max;
293	PL_savestack = c->savestack;
294	PL_savestack_ix = c->savestack_ix;
295	PL_savestack_max = c->savestack_max;
296	#if PERL_VERSION < 9
297	PL_retstack = c->retstack;
298	PL_retstack_ix = c->retstack_ix;
299	PL_retstack_max = c->retstack_max;
300	#endif
301	PL_curpm = c->curpm;
302	PL_curcop = c->curcop;
303		359
304	if (c->defav) REPLACE_SV (GvAV (PL_defgv), c->defav);	360	if (c->defav) REPLACE_SV (GvAV (PL_defgv), c->defav);
305	if (c->defsv) REPLACE_SV (DEFSV , c->defsv);	361	if (c->defsv) REPLACE_SV (DEFSV , c->defsv);
306	if (c->errsv) REPLACE_SV (ERRSV , c->errsv);	362	if (c->errsv) REPLACE_SV (ERRSV , c->errsv);
		363	if (c->deffh) REPLACE_SV (PL_defoutgv , c->deffh);
		364
		365	if (c->irssv)
		366	{
		367	if (c->irssv == PL_rs \|\| sv_eq (PL_rs, c->irssv))
		368	{
		369	SvREFCNT_dec (c->irssv);
		370	c->irssv = 0;
		371	}
		372	else
		373	{
		374	REPLACE_SV (PL_rs, c->irssv);
		375	if (!c->irssv_sv) c->irssv_sv = get_sv ("/", 0);
		376	sv_setsv (c->irssv_sv, PL_rs);
		377	}
		378	}
307		379
308	{	380	{
309	dSP;	381	dSP;
310	CV *cv;	382	CV *cv;
311		383
312	/* now do the ugly restore mess */	384	/* now do the ugly restore mess */
313	while ((cv = (CV *)POPs))	385	while ((cv = (CV *)POPs))
314	{	386	{
315	AV padlist = (AV )POPs;
316
317	if (padlist)
318	{
319	put_padlist (cv); /* mark this padlist as available */	387	put_padlist (aTHX_ cv); /* mark this padlist as available */
320	CvPADLIST(cv) = padlist;	388	CvDEPTH (cv) = PTR2IV (POPs);
321	}	389	CvPADLIST (cv) = (AV *)POPs;
322
323	++CvDEPTH(cv);
324	}	390	}
325		391
326	PUTBACK;	392	PUTBACK;
327	}	393	}
328	}	394	}
329		395
330	static void	396	static void
331	save_state(Coro__State c, int flags)	397	save_perl (pTHX_ Coro__State c)
332	{	398	{
333	{	399	{
334	dSP;	400	dSP;
335	I32 cxix = cxstack_ix;	401	I32 cxix = cxstack_ix;
336	PERL_CONTEXT *ccstk = cxstack;	402	PERL_CONTEXT *ccstk = cxstack;
…		…
339	/*	405	/*
340	* the worst thing you can imagine happens first - we have to save	406	* the worst thing you can imagine happens first - we have to save
341	* (and reinitialize) all cv's in the whole callchain :(	407	* (and reinitialize) all cv's in the whole callchain :(
342	*/	408	*/
343		409
344	PUSHs (Nullsv);	410	XPUSHs (Nullsv);
345	/* this loop was inspired by pp_caller */	411	/* this loop was inspired by pp_caller */
346	for (;;)	412	for (;;)
347	{	413	{
348	while (cxix >= 0)	414	while (cxix >= 0)
349	{	415	{
350	PERL_CONTEXT *cx = &ccstk[cxix--];	416	PERL_CONTEXT *cx = &ccstk[cxix--];
351		417
352	if (CxTYPE(cx) == CXt_SUB)	418	if (CxTYPE (cx) == CXt_SUB \|\| CxTYPE (cx) == CXt_FORMAT)
353	{	419	{
354	CV *cv = cx->blk_sub.cv;	420	CV *cv = cx->blk_sub.cv;
		421
355	if (CvDEPTH(cv))	422	if (CvDEPTH (cv))
356	{	423	{
357	EXTEND (SP, CvDEPTH(cv)*2);	424	EXTEND (SP, 3);
358
359	while (--CvDEPTH(cv))
360	{
361	/* this tells the restore code to increment CvDEPTH */
362	PUSHs (Nullsv);
363	PUSHs ((SV *)cv);
364	}
365
366	PUSHs ((SV *)CvPADLIST(cv));	425	PUSHs ((SV *)CvPADLIST (cv));
		426	PUSHs (INT2PTR (SV *, CvDEPTH (cv)));
367	PUSHs ((SV *)cv);	427	PUSHs ((SV *)cv);
368		428
		429	CvDEPTH (cv) = 0;
369	get_padlist (cv);	430	get_padlist (aTHX_ cv);
370	}	431	}
371	}	432	}
372	#ifdef CXt_FORMAT
373	else if (CxTYPE(cx) == CXt_FORMAT)
374	{
375	/* I never used formats, so how should I know how these are implemented? */
376	/* my bold guess is as a simple, plain sub... */
377	croak ("CXt_FORMAT not yet handled. Don't switch coroutines from within formats");
378	}
379	#endif
380	}	433	}
381		434
382	if (top_si->si_type == PERLSI_MAIN)	435	if (top_si->si_type == PERLSI_MAIN)
383	break;	436	break;
384		437
385	top_si = top_si->si_prev;	438	top_si = top_si->si_prev;
386	ccstk = top_si->si_cxstack;	439	ccstk = top_si->si_cxstack;
387	cxix = top_si->si_cxix;	440	cxix = top_si->si_cxix;
388	}	441	}
389		442
390	PUTBACK;	443	PUTBACK;
391	}	444	}
392		445
393	c->defav = flags & TRANSFER_SAVE_DEFAV ? (AV *)SvREFCNT_inc (GvAV (PL_defgv)) : 0;	446	c->defav = c->save & CORO_SAVE_DEFAV ? (AV *)SvREFCNT_inc (GvAV (PL_defgv)) : 0;
394	c->defsv = flags & TRANSFER_SAVE_DEFSV ? SvREFCNT_inc (DEFSV) : 0;	447	c->defsv = c->save & CORO_SAVE_DEFSV ? SvREFCNT_inc (DEFSV) : 0;
395	c->errsv = flags & TRANSFER_SAVE_ERRSV ? SvREFCNT_inc (ERRSV) : 0;	448	c->errsv = c->save & CORO_SAVE_ERRSV ? SvREFCNT_inc (ERRSV) : 0;
		449	c->deffh = c->save & CORO_SAVE_DEFFH ? (GV *)SvREFCNT_inc (PL_defoutgv) : 0;
		450	c->irssv = c->save & CORO_SAVE_IRSSV ? SvREFCNT_inc (PL_rs) : 0;
396		451
397	c->dowarn = PL_dowarn;	452	#define VAR(name,type)c->name = PL_ ## name;
398	c->in_eval = PL_in_eval;	453	# include "state.h"
399		454	#undef VAR
400	c->curstackinfo = PL_curstackinfo;
401	c->curstack = PL_curstack;
402	c->mainstack = PL_mainstack;
403	c->stack_sp = PL_stack_sp;
404	c->op = PL_op;
405	c->curpad = PL_curpad;
406	c->comppad = PL_comppad;
407	c->compcv = PL_compcv;
408	c->stack_base = PL_stack_base;
409	c->stack_max = PL_stack_max;
410	c->tmps_stack = PL_tmps_stack;
411	c->tmps_floor = PL_tmps_floor;
412	c->tmps_ix = PL_tmps_ix;
413	c->tmps_max = PL_tmps_max;
414	c->markstack = PL_markstack;
415	c->markstack_ptr = PL_markstack_ptr;
416	c->markstack_max = PL_markstack_max;
417	c->scopestack = PL_scopestack;
418	c->scopestack_ix = PL_scopestack_ix;
419	c->scopestack_max = PL_scopestack_max;
420	c->savestack = PL_savestack;
421	c->savestack_ix = PL_savestack_ix;
422	c->savestack_max = PL_savestack_max;
423	#if PERL_VERSION < 9
424	c->retstack = PL_retstack;
425	c->retstack_ix = PL_retstack_ix;
426	c->retstack_max = PL_retstack_max;
427	#endif
428	c->curpm = PL_curpm;
429	c->curcop = PL_curcop;
430	}	455	}
431		456
432	/*	457	/*
433	* allocate various perl stacks. This is an exact copy	458	* allocate various perl stacks. This is an exact copy
434	* of perl.c:init_stacks, except that it uses less memory	459	* of perl.c:init_stacks, except that it uses less memory
435	* on the (sometimes correct) assumption that coroutines do	460	* on the (sometimes correct) assumption that coroutines do
436	* not usually need a lot of stackspace.	461	* not usually need a lot of stackspace.
437	*/	462	*/
		463	#if CORO_PREFER_PERL_FUNCTIONS
		464	# define coro_init_stacks init_stacks
		465	#else
438	static void	466	static void
439	coro_init_stacks ()	467	coro_init_stacks (pTHX)
440	{	468	{
441	LOCK;	469	PL_curstackinfo = new_stackinfo(64, 6);
442
443	PL_curstackinfo = new_stackinfo(96, 1024/sizeof(PERL_CONTEXT) - 1);
444	PL_curstackinfo->si_type = PERLSI_MAIN;	470	PL_curstackinfo->si_type = PERLSI_MAIN;
445	PL_curstack = PL_curstackinfo->si_stack;	471	PL_curstack = PL_curstackinfo->si_stack;
446	PL_mainstack = PL_curstack; /* remember in case we switch stacks */	472	PL_mainstack = PL_curstack; /* remember in case we switch stacks */
447		473
448	PL_stack_base = AvARRAY(PL_curstack);	474	PL_stack_base = AvARRAY(PL_curstack);
449	PL_stack_sp = PL_stack_base;	475	PL_stack_sp = PL_stack_base;
450	PL_stack_max = PL_stack_base + AvMAX(PL_curstack);	476	PL_stack_max = PL_stack_base + AvMAX(PL_curstack);
451		477
452	New(50,PL_tmps_stack,96,SV*);	478	New(50,PL_tmps_stack,64,SV*);
453	PL_tmps_floor = -1;	479	PL_tmps_floor = -1;
454	PL_tmps_ix = -1;	480	PL_tmps_ix = -1;
455	PL_tmps_max = 96;	481	PL_tmps_max = 64;
456		482
457	New(54,PL_markstack,16,I32);	483	New(54,PL_markstack,16,I32);
458	PL_markstack_ptr = PL_markstack;	484	PL_markstack_ptr = PL_markstack;
459	PL_markstack_max = PL_markstack + 16;	485	PL_markstack_max = PL_markstack + 16;
460		486
…		…
464		490
465	New(54,PL_scopestack,16,I32);	491	New(54,PL_scopestack,16,I32);
466	PL_scopestack_ix = 0;	492	PL_scopestack_ix = 0;
467	PL_scopestack_max = 16;	493	PL_scopestack_max = 16;
468		494
469	New(54,PL_savestack,96,ANY);	495	New(54,PL_savestack,64,ANY);
470	PL_savestack_ix = 0;	496	PL_savestack_ix = 0;
471	PL_savestack_max = 96;	497	PL_savestack_max = 64;
472		498
473	#if PERL_VERSION < 9	499	#if !PERL_VERSION_ATLEAST (5,9,0)
474	New(54,PL_retstack,8,OP*);	500	New(54,PL_retstack,4,OP*);
475	PL_retstack_ix = 0;	501	PL_retstack_ix = 0;
476	PL_retstack_max = 8;	502	PL_retstack_max = 4;
477	#endif	503	#endif
478
479	UNLOCK;
480	}	504	}
		505	#endif
481		506
482	/*	507	/*
483	* destroy the stacks, the callchain etc...	508	* destroy the stacks, the callchain etc...
484	*/	509	*/
485	static void	510	static void
486	destroy_stacks()	511	coro_destroy_stacks (pTHX)
487	{	512	{
488	if (!IN_DESTRUCT)	513	if (!IN_DESTRUCT)
489	{	514	{
490	/* is this ugly, I ask? */	515	/* restore all saved variables and stuff */
491	LEAVE_SCOPE (0);	516	LEAVE_SCOPE (0);
		517	assert (PL_tmps_floor == -1);
492		518
493	/* sure it is, but more important: is it correct?? :/ */	519	/* free all temporaries */
494	FREETMPS;	520	FREETMPS;
		521	assert (PL_tmps_ix == -1);
495		522
		523	/* unwind all extra stacks */
496	/POPSTACK_TO (PL_mainstack);//D//use/	524	POPSTACK_TO (PL_mainstack);
		525
		526	/* unwind main stack */
		527	dounwind (-1);
497	}	528	}
498		529
499	while (PL_curstackinfo->si_next)	530	while (PL_curstackinfo->si_next)
500	PL_curstackinfo = PL_curstackinfo->si_next;	531	PL_curstackinfo = PL_curstackinfo->si_next;
501		532
502	while (PL_curstackinfo)	533	while (PL_curstackinfo)
503	{	534	{
504	PERL_SI *p = PL_curstackinfo->si_prev;	535	PERL_SI *p = PL_curstackinfo->si_prev;
505		536
506	{ /D//remove/
507	dSP;
508	SWITCHSTACK (PL_curstack, PL_curstackinfo->si_stack);
509	PUTBACK; /* possibly superfluous */
510	}
511
512	if (!IN_DESTRUCT)	537	if (!IN_DESTRUCT)
513	{
514	dounwind (-1);/D//remove/
515	SvREFCNT_dec (PL_curstackinfo->si_stack);	538	SvREFCNT_dec (PL_curstackinfo->si_stack);
516	}
517		539
518	Safefree (PL_curstackinfo->si_cxstack);	540	Safefree (PL_curstackinfo->si_cxstack);
519	Safefree (PL_curstackinfo);	541	Safefree (PL_curstackinfo);
520	PL_curstackinfo = p;	542	PL_curstackinfo = p;
521	}	543	}
522		544
523	Safefree (PL_tmps_stack);	545	Safefree (PL_tmps_stack);
524	Safefree (PL_markstack);	546	Safefree (PL_markstack);
525	Safefree (PL_scopestack);	547	Safefree (PL_scopestack);
526	Safefree (PL_savestack);	548	Safefree (PL_savestack);
527	#if PERL_VERSION < 9	549	#if !PERL_VERSION_ATLEAST (5,9,0)
528	Safefree (PL_retstack);	550	Safefree (PL_retstack);
529	#endif	551	#endif
530	}	552	}
531		553
		554	static size_t
		555	coro_rss (struct coro *coro)
		556	{
		557	size_t rss = sizeof (coro);
		558
		559	if (coro->mainstack)
		560	{
		561	if (coro->flags & CF_RUNNING)
		562	{
		563	#define VAR(name,type)coro->name = PL_ ## name;
		564	# include "state.h"
		565	#undef VAR
		566	}
		567
		568	rss += sizeof (coro->curstackinfo);
		569	rss += sizeof (struct xpvav) + (1 + AvFILL (coro->curstackinfo->si_stack)) * sizeof (SV *);
		570	rss += (coro->curstackinfo->si_cxmax + 1) * sizeof (PERL_CONTEXT);
		571	rss += sizeof (struct xpvav) + (1 + AvFILL (coro->curstack)) * sizeof (SV *);
		572	rss += coro->tmps_max * sizeof (SV *);
		573	rss += (coro->markstack_max - coro->markstack_ptr) * sizeof (I32);
		574	rss += coro->scopestack_max * sizeof (I32);
		575	rss += coro->savestack_max * sizeof (ANY);
		576
		577	#if !PERL_VERSION_ATLEAST (5,9,0)
		578	rss += coro->retstack_max * sizeof (OP *);
		579	#endif
		580	}
		581
		582	return rss;
		583	}
		584
		585	/ coroutine stack handling **********************************************/
		586
532	static void	587	static void
533	setup_coro (struct coro *coro)	588	setup_coro (pTHX_ struct coro *coro)
534	{	589	{
535	/*	590	/*
536	* emulate part of the perl startup here.	591	* emulate part of the perl startup here.
537	*/	592	*/
538	dTHX;	593	coro_init_stacks (aTHX);
		594
		595	PL_curcop = &PL_compiling;
		596	PL_in_eval = EVAL_NULL;
		597	PL_comppad = 0;
		598	PL_curpm = 0;
		599	PL_localizing = 0;
		600	PL_dirty = 0;
		601	PL_restartop = 0;
		602
		603	{
		604	dSP;
		605	LOGOP myop;
		606
		607	SvREFCNT_dec (GvAV (PL_defgv));
		608	GvAV (PL_defgv) = coro->args; coro->args = 0;
		609
		610	Zero (&myop, 1, LOGOP);
		611	myop.op_next = Nullop;
		612	myop.op_flags = OPf_WANT_VOID;
		613
		614	PUSHMARK (SP);
		615	XPUSHs (av_shift (GvAV (PL_defgv)));
		616	PUTBACK;
		617	PL_op = (OP *)&myop;
		618	PL_op = PL_ppaddr[OP_ENTERSUB](aTHX);
		619	SPAGAIN;
		620	}
		621
		622	ENTER; /* necessary e.g. for dounwind */
		623	}
		624
		625	static void
		626	free_coro_mortal (pTHX)
		627	{
		628	if (coro_mortal)
		629	{
		630	SvREFCNT_dec (coro_mortal);
		631	coro_mortal = 0;
		632	}
		633	}
		634
		635	static void
		636	do_trace (pTHX)
		637	{
		638	if (PL_curcop != &PL_compiling)
		639	{
		640	runops_proc_t old_runops = PL_runops;
		641	dSP;
		642	ENTER;
		643	SAVETMPS;
		644	PUSHMARK (SP);
		645	PUTBACK;
		646	PL_runops = RUNOPS_DEFAULT;
		647	call_pv ("Coro::_do_trace", G_KEEPERR \| G_EVAL \| G_VOID \| G_DISCARD \| G_NOARGS);
		648	PL_runops = old_runops;
		649	SPAGAIN;
		650	FREETMPS;
		651	LEAVE;
		652	PUTBACK;
		653	}
		654	}
		655
		656	static int
		657	runops_coro (pTHX)
		658	{
		659	COP *oldcop = 0;
		660
		661	while ((PL_op = CALL_FPTR (PL_op->op_ppaddr) (aTHX)))
		662	{
		663	PERL_ASYNC_CHECK ();
		664
		665	if (oldcop != PL_curcop)
		666	{
		667	oldcop = PL_curcop;
		668	do_trace (aTHX);
		669	}
		670	}
		671
		672	TAINT_NOT;
		673	return 0;
		674	}
		675
		676	/* inject a fake call to Coro::State::_cctx_init into the execution */
		677	/* _cctx_init should be careful, as it could be called at almost any time */
		678	/* during execution of a perl program */
		679	static void NOINLINE
		680	prepare_cctx (pTHX_ coro_cctx *cctx)
		681	{
539	dSP;	682	dSP;
540	UNOP myop;	683	LOGOP myop;
541	SV sub_init = (SV )get_cv ("Coro::State::coro_init", FALSE);
542		684
543	coro_init_stacks ();	685	PL_top_env = &PL_start_env;
544	/PL_curcop = 0;/
545	/PL_in_eval = PL_in_eval;/ /* inherit */
546	SvREFCNT_dec (GvAV (PL_defgv));
547	GvAV (PL_defgv) = coro->args; coro->args = 0;
548		686
549	SPAGAIN;	687	if (cctx->flags & CC_TRACE)
		688	PL_runops = runops_coro;
550		689
551	Zero (&myop, 1, UNOP);	690	Zero (&myop, 1, LOGOP);
552	myop.op_next = Nullop;	691	myop.op_next = PL_op;
553	myop.op_flags = OPf_WANT_VOID;	692	myop.op_flags = OPf_WANT_VOID \| OPf_STACKED;
554		693
		694	PUSHMARK (SP);
		695	EXTEND (SP, 2);
		696	PUSHs (sv_2mortal (newSViv (PTR2IV (cctx))));
		697	PUSHs ((SV *)get_cv ("Coro::State::_cctx_init", FALSE));
		698	PUTBACK;
555	PL_op = (OP *)&myop;	699	PL_op = (OP *)&myop;
556
557	PUSHMARK(SP);
558	XPUSHs (sub_init);
559	PUTBACK;
560	PL_op = PL_ppaddr[OP_ENTERSUB](aTHX);	700	PL_op = PL_ppaddr[OP_ENTERSUB](aTHX);
561	SPAGAIN;	701	SPAGAIN;
562
563	ENTER; /* necessary e.g. for dounwind */
564	}	702	}
565		703
566	static void	704	/*
567	free_coro_mortal ()	705	* this is a _very_ stripped down perl interpreter ;)
568	{	706	*/
569	if (coro_mortal)
570	{
571	SvREFCNT_dec (coro_mortal);
572	coro_mortal = 0;
573	}
574	}
575
576	static void	707	static void
577	coro_run (void *arg)	708	coro_run (void *arg)
578	{	709	{
		710	dTHX;
		711
		712	/* coro_run is the alternative tail of transfer(), so unlock here. */
		713	UNLOCK;
		714
		715	/* we now skip the entersub that lead to transfer() */
		716	PL_op = PL_op->op_next;
		717
		718	/* inject a fake subroutine call to cctx_init */
		719	prepare_cctx (aTHX_ (coro_cctx *)arg);
		720
		721	/* somebody or something will hit me for both perl_run and PL_restartop */
		722	PL_restartop = PL_op;
		723	perl_run (PL_curinterp);
		724
579	/*	725	/*
580	* this is a _very_ stripped down perl interpreter ;)	726	* If perl-run returns we assume exit() was being called or the coro
		727	* fell off the end, which seems to be the only valid (non-bug)
		728	* reason for perl_run to return. We try to exit by jumping to the
		729	* bootstrap-time "top" top_env, as we cannot restore the "main"
		730	* coroutine as Coro has no such concept
581	*/	731	*/
582	dTHX;
583	int ret;
584
585	UNLOCK;
586
587	PL_top_env = &PL_start_env;	732	PL_top_env = main_top_env;
588		733	JMPENV_JUMP (2); /* I do not feel well about the hardcoded 2 at all */
589	sv_setiv (get_sv ("Coro::State::cctx_stack", FALSE), PTR2IV ((coro_stack *)arg));
590	sv_setiv (get_sv ("Coro::State::cctx_restartop", FALSE), PTR2IV (PL_op));
591
592	/* continue at cctx_init, without entersub */
593	PL_restartop = CvSTART (get_cv ("Coro::State::cctx_init", FALSE));
594
595	/* somebody will hit me for both perl_run and PL_restartop */
596	ret = perl_run (PERL_GET_CONTEXT);
597	printf ("ret %d\n", ret);//D
598
599	fputs ("FATAL: C coroutine fell over the edge of the world, aborting.\n", stderr);
600	abort ();
601	}	734	}
602		735
603	static coro_stack *	736	static coro_cctx *
604	stack_new ()	737	cctx_new ()
605	{	738	{
606	coro_stack *stack;	739	coro_cctx *cctx;
		740	void *stack_start;
		741	size_t stack_size;
607		742
		743	++cctx_count;
		744
608	New (0, stack, 1, coro_stack);	745	Newz (0, cctx, 1, coro_cctx);
609		746
610	#if HAVE_MMAP	747	#if HAVE_MMAP
611		748
612	stack->ssize = ((STACKSIZE * sizeof (long) + PAGESIZE - 1) / PAGESIZE + STACKGUARD) * PAGESIZE;	749	cctx->ssize = ((coro_stacksize * sizeof (long) + PAGESIZE - 1) / PAGESIZE + CORO_STACKGUARD) * PAGESIZE;
613	/* mmap suppsedly does allocate-on-write for us */	750	/* mmap supposedly does allocate-on-write for us */
614	stack->sptr = mmap (0, stack->ssize, PROT_EXEC\|PROT_READ\|PROT_WRITE, MAP_PRIVATE\|MAP_ANONYMOUS, 0, 0);	751	cctx->sptr = mmap (0, cctx->ssize, PROT_EXEC\|PROT_READ\|PROT_WRITE, MAP_PRIVATE\|MAP_ANONYMOUS, 0, 0);
615		752
616	if (stack->sptr == (void *)-1)	753	if (cctx->sptr != (void *)-1)
617	{
618	perror ("FATAL: unable to mmap stack for coroutine");
619	_exit (EXIT_FAILURE);
620	}	754	{
621
622	# if STACKGUARD	755	# if CORO_STACKGUARD
623	mprotect (stack->sptr, STACKGUARD * PAGESIZE, PROT_NONE);	756	mprotect (cctx->sptr, CORO_STACKGUARD * PAGESIZE, PROT_NONE);
624	# endif	757	# endif
625		758	stack_start = CORO_STACKGUARD * PAGESIZE + (char *)cctx->sptr;
626	#else	759	stack_size = cctx->ssize - CORO_STACKGUARD * PAGESIZE;
627		760	cctx->flags \|= CC_MAPPED;
628	stack->ssize = STACKSIZE * (long)sizeof (long);
629	New (0, stack->sptr, STACKSIZE, long);
630
631	if (!stack->sptr)
632	{	761	}
		762	else
		763	#endif
		764	{
		765	cctx->ssize = coro_stacksize * (long)sizeof (long);
		766	New (0, cctx->sptr, coro_stacksize, long);
		767
		768	if (!cctx->sptr)
		769	{
633	perror (stderr, "FATAL: unable to malloc stack for coroutine");	770	perror ("FATAL: unable to allocate stack for coroutine");
634	_exit (EXIT_FAILURE);	771	_exit (EXIT_FAILURE);
635	}	772	}
636		773
637	#endif	774	stack_start = cctx->sptr;
		775	stack_size = cctx->ssize;
		776	}
638		777
		778	REGISTER_STACK (cctx, (char )stack_start, (char )stack_start + stack_size);
639	coro_create (&stack->cctx, coro_run, (void *)stack, stack->sptr, stack->ssize);	779	coro_create (&cctx->cctx, coro_run, (void *)cctx, stack_start, stack_size);
640		780
641	return stack;	781	return cctx;
642	}	782	}
643		783
644	static void	784	static void
645	stack_free (coro_stack *stack)	785	cctx_destroy (coro_cctx *cctx)
646	{	786	{
647	if (!stack)	787	if (!cctx)
648	return;	788	return;
649		789
		790	--cctx_count;
		791
		792	#if CORO_USE_VALGRIND
		793	VALGRIND_STACK_DEREGISTER (cctx->valgrind_id);
		794	#endif
		795
650	#if HAVE_MMAP	796	#if HAVE_MMAP
		797	if (cctx->flags & CC_MAPPED)
651	munmap (stack->sptr, stack->ssize);	798	munmap (cctx->sptr, cctx->ssize);
652	#else
653	Safefree (stack->sptr);
654	#endif
655
656	Safefree (stack);
657	}
658
659	static coro_stack *stack_first;
660
661	static coro_stack *
662	stack_get ()
663	{
664	coro_stack *stack;
665
666	if (stack_first)
667	{
668	stack = stack_first;
669	stack_first = stack->next;
670	}
671	else	799	else
		800	#endif
		801	Safefree (cctx->sptr);
		802
		803	Safefree (cctx);
		804	}
		805
		806	static coro_cctx *
		807	cctx_get (pTHX)
		808	{
		809	while (cctx_first)
672	{	810	{
673	stack = stack_new ();	811	coro_cctx *cctx = cctx_first;
674	PL_op = PL_op->op_next;	812	cctx_first = cctx->next;
		813	--cctx_idle;
		814
		815	if (cctx->ssize >= coro_stacksize && !(cctx->flags & CC_NOREUSE))
		816	return cctx;
		817
		818	cctx_destroy (cctx);
675	}	819	}
676		820
677	return stack;	821	return cctx_new ();
678	}	822	}
679		823
680	static void	824	static void
681	stack_put (coro_stack *stack)	825	cctx_put (coro_cctx *cctx)
682	{	826	{
683	stack->next = stack_first;	827	/* free another cctx if overlimit */
684	stack_first = stack;	828	if (cctx_idle >= MAX_IDLE_CCTX)
		829	{
		830	coro_cctx *first = cctx_first;
		831	cctx_first = first->next;
		832	--cctx_idle;
		833
		834	cctx_destroy (first);
		835	}
		836
		837	++cctx_idle;
		838	cctx->next = cctx_first;
		839	cctx_first = cctx;
685	}	840	}
		841
		842	/ coroutine switching ***************************************************/
686		843
687	/* never call directly, always through the coro_state_transfer global variable */	844	/* never call directly, always through the coro_state_transfer global variable */
688	static void	845	static void NOINLINE
689	transfer_impl (struct coro prev, struct coro next, int flags)	846	transfer (pTHX_ struct coro prev, struct coro next)
690	{	847	{
691	dSTACKLEVEL;	848	dSTACKLEVEL;
692		849
693	/* sometimes transfer is only called to set idle_sp */	850	/* sometimes transfer is only called to set idle_sp */
694	if (flags == TRANSFER_SET_STACKLEVEL)	851	if (!next)
		852	{
695	((coro_stack *)prev)->idle_sp = STACKLEVEL;	853	((coro_cctx *)prev)->idle_sp = STACKLEVEL;
		854	assert (((coro_cctx )prev)->idle_te = PL_top_env); / just for the side-effect when asserts are enabled */
		855	}
696	else if (prev != next)	856	else if (prev != next)
697	{	857	{
698	coro_stack *prev__stack;	858	coro_cctx *prev__cctx;
		859
		860	if (prev->flags & CF_NEW)
		861	{
		862	/* create a new empty context */
		863	Newz (0, prev->cctx, 1, coro_cctx);
		864	prev->flags &= ~CF_NEW;
		865	prev->flags \|= CF_RUNNING;
		866	}
		867
		868	/TODO: must not croak here /
		869	if (!prev->flags & CF_RUNNING)
		870	croak ("Coro::State::transfer called with non-running prev Coro::State, but can only transfer from running states");
		871
		872	if (next->flags & CF_RUNNING)
		873	croak ("Coro::State::transfer called with running next Coro::State, but can only transfer to inactive states");
		874
		875	if (next->flags & CF_DESTROYED)
		876	croak ("Coro::State::transfer called with destroyed next Coro::State, but can only transfer to inactive states");
		877
		878	prev->flags &= ~CF_RUNNING;
		879	next->flags \|= CF_RUNNING;
699		880
700	LOCK;	881	LOCK;
701		882
702	if (next->mainstack)	883	if (next->flags & CF_NEW)
703	{	884	{
704	/* coroutine already started */	885	/* need to start coroutine */
705	SAVE (prev, flags);	886	next->flags &= ~CF_NEW;
706	LOAD (next);	887	/* first get rid of the old state */
		888	save_perl (aTHX_ prev);
		889	/* setup coroutine call */
		890	setup_coro (aTHX_ next);
707	}	891	}
708	else	892	else
709	{	893	{
710	/* need to start coroutine */	894	/* coroutine already started */
711	/* first get rid of the old state */	895	save_perl (aTHX_ prev);
712	SAVE (prev, -1);	896	load_perl (aTHX_ next);
713	/* setup coroutine call */
714	setup_coro (next);
715	/* need a stack */
716	next->stack = 0;
717	}	897	}
718		898
719	if (!prev->stack)
720	/* create a new empty context */
721	Newz (0, prev->stack, 1, coro_stack);
722
723	prev__stack = prev->stack;	899	prev__cctx = prev->cctx;
724		900
725	/* possibly "free" the stack */	901	/* possibly "free" the cctx */
726	if (prev__stack->idle_sp == STACKLEVEL)	902	if (prev__cctx->idle_sp == STACKLEVEL)
727	{	903	{
728	stack_put (prev__stack);	904	/* I assume that STACKLEVEL is a stronger indicator than PL_top_env changes */
		905	assert (("ERROR: current top_env must equal previous top_env", PL_top_env == prev__cctx->idle_te));
		906
729	prev->stack = 0;	907	prev->cctx = 0;
		908
		909	cctx_put (prev__cctx);
730	}	910	}
731		911
732	if (!next->stack)	912	if (!next->cctx)
733	next->stack = stack_get ();	913	next->cctx = cctx_get (aTHX);
734		914
735	if (prev__stack != next->stack)	915	if (prev__cctx != next->cctx)
736	{	916	{
737	prev__stack->top_env = PL_top_env;	917	prev__cctx->top_env = PL_top_env;
738	PL_top_env = next->stack->top_env;	918	PL_top_env = next->cctx->top_env;
739	coro_transfer (&prev__stack->cctx, &next->stack->cctx);	919	coro_transfer (&prev__cctx->cctx, &next->cctx->cctx);
740	}	920	}
741		921
742	free_coro_mortal ();	922	free_coro_mortal (aTHX);
743
744	UNLOCK;	923	UNLOCK;
745	}	924	}
746	}	925	}
747		926
748	/* use this function pointer to call the above function */
749	/* this is done to increase chances of the compiler not inlining the call */
750	/* not static to make it even harder for the compiler (and theoretically impossible in most cases */
751	void (coro_state_transfer)(struct coro prev, struct coro *next, int flags) = transfer_impl;
752
753	struct transfer_args	927	struct transfer_args
754	{	928	{
755	struct coro prev, next;	929	struct coro prev, next;
756	int flags;
757	};	930	};
758		931
759	#define TRANSFER(ta) coro_state_transfer ((ta).prev, (ta).next, (ta).flags)	932	#define TRANSFER(ta) transfer (aTHX_ (ta).prev, (ta).next)
760		933
		934	/ high level stuff ******************************************************/
		935
761	static void	936	static int
762	coro_state_destroy (struct coro *coro)	937	coro_state_destroy (pTHX_ struct coro *coro)
763	{	938	{
764	if (coro->refcnt--)	939	if (coro->flags & CF_DESTROYED)
765	return;	940	return 0;
		941
		942	coro->flags \|= CF_DESTROYED;
		943
		944	if (coro->flags & CF_READY)
		945	{
		946	/* reduce nready, as destroying a ready coro effectively unreadies it */
		947	/* alternative: look through all ready queues and remove the coro */
		948	LOCK;
		949	--coro_nready;
		950	UNLOCK;
		951	}
		952	else
		953	coro->flags \|= CF_READY; /* make sure it is NOT put into the readyqueue */
766		954
767	if (coro->mainstack && coro->mainstack != main_mainstack)	955	if (coro->mainstack && coro->mainstack != main_mainstack)
768	{	956	{
769	struct coro temp;	957	struct coro temp;
770		958
771	SAVE ((&temp), TRANSFER_SAVE_ALL);	959	assert (!(coro->flags & CF_RUNNING));
772	LOAD (coro);
773		960
		961	Zero (&temp, 1, struct coro);
		962	temp.save = CORO_SAVE_ALL;
		963
		964	if (coro->flags & CF_RUNNING)
		965	croak ("FATAL: tried to destroy currently running coroutine");
		966
		967	save_perl (aTHX_ &temp);
		968	load_perl (aTHX_ coro);
		969
774	destroy_stacks ();	970	coro_destroy_stacks (aTHX);
775		971
776	LOAD ((&temp)); /* this will get rid of defsv etc.. */	972	load_perl (aTHX_ &temp); /* this will get rid of defsv etc.. */
777		973
778	coro->mainstack = 0;	974	coro->mainstack = 0;
779	}	975	}
780		976
781	stack_free (coro->stack);	977	cctx_destroy (coro->cctx);
782	SvREFCNT_dec (coro->args);	978	SvREFCNT_dec (coro->args);
783	Safefree (coro);	979
		980	if (coro->next) coro->next->prev = coro->prev;
		981	if (coro->prev) coro->prev->next = coro->next;
		982	if (coro == coro_first) coro_first = coro->next;
		983
		984	return 1;
784	}	985	}
785		986
786	static int	987	static int
787	coro_state_clear (pTHX_ SV sv, MAGIC mg)	988	coro_state_free (pTHX_ SV sv, MAGIC mg)
788	{	989	{
789	struct coro coro = (struct coro )mg->mg_ptr;	990	struct coro coro = (struct coro )mg->mg_ptr;
790	mg->mg_ptr = 0;	991	mg->mg_ptr = 0;
791		992
		993	coro->hv = 0;
		994
		995	if (--coro->refcnt < 0)
		996	{
792	coro_state_destroy (coro);	997	coro_state_destroy (aTHX_ coro);
		998	Safefree (coro);
		999	}
793		1000
794	return 0;	1001	return 0;
795	}	1002	}
796		1003
797	static int	1004	static int
…		…
802	++coro->refcnt;	1009	++coro->refcnt;
803		1010
804	return 0;	1011	return 0;
805	}	1012	}
806		1013
807	static MGVTBL coro_state_vtbl = { 0, 0, 0, 0, coro_state_clear, 0, coro_state_dup, 0 };	1014	static MGVTBL coro_state_vtbl = {
		1015	0, 0, 0, 0,
		1016	coro_state_free,
		1017	0,
		1018	#ifdef MGf_DUP
		1019	coro_state_dup,
		1020	#else
		1021	# define MGf_DUP 0
		1022	#endif
		1023	};
808		1024
809	static struct coro *	1025	static struct coro *
810	SvSTATE (SV *coro)	1026	SvSTATE_ (pTHX_ SV *coro)
811	{	1027	{
812	HV *stash;	1028	HV *stash;
813	MAGIC *mg;	1029	MAGIC *mg;
814		1030
815	if (SvROK (coro))	1031	if (SvROK (coro))
…		…
821	/* very slow, but rare, check */	1037	/* very slow, but rare, check */
822	if (!sv_derived_from (sv_2mortal (newRV_inc (coro)), "Coro::State"))	1038	if (!sv_derived_from (sv_2mortal (newRV_inc (coro)), "Coro::State"))
823	croak ("Coro::State object required");	1039	croak ("Coro::State object required");
824	}	1040	}
825		1041
826	mg = SvMAGIC (coro);	1042	mg = CORO_MAGIC (coro);
827	assert (mg->mg_type == PERL_MAGIC_ext);
828	return (struct coro *)mg->mg_ptr;	1043	return (struct coro *)mg->mg_ptr;
829	}	1044	}
830		1045
		1046	#define SvSTATE(sv) SvSTATE_ (aTHX_ (sv))
		1047
831	static void	1048	static void
832	prepare_transfer (struct transfer_args ta, SV prev, SV *next, int flags)	1049	prepare_transfer (pTHX_ struct transfer_args ta, SV prev_sv, SV *next_sv)
833	{	1050	{
834	ta->prev = SvSTATE (prev);	1051	ta->prev = SvSTATE (prev_sv);
835	ta->next = SvSTATE (next);	1052	ta->next = SvSTATE (next_sv);
836	ta->flags = flags;
837	}	1053	}
838		1054
839	static void	1055	static void
840	api_transfer (SV prev, SV next, int flags)	1056	api_transfer (SV prev_sv, SV next_sv)
841	{	1057	{
842	dTHX;	1058	dTHX;
843	struct transfer_args ta;	1059	struct transfer_args ta;
844		1060
845	prepare_transfer (&ta, prev, next, flags);	1061	prepare_transfer (aTHX_ &ta, prev_sv, next_sv);
846	TRANSFER (ta);	1062	TRANSFER (ta);
847	}	1063	}
848		1064
		1065	static int
		1066	api_save (SV *coro_sv, int new_save)
		1067	{
		1068	dTHX;
		1069	struct coro *coro = SvSTATE (coro_sv);
		1070	int old_save = coro->save;
		1071
		1072	if (new_save >= 0)
		1073	coro->save = new_save;
		1074
		1075	return old_save;
		1076	}
		1077
849	/ Coro ******************************************************************/	1078	/ Coro ******************************************************************/
850		1079
851	#define PRIO_MAX 3
852	#define PRIO_HIGH 1
853	#define PRIO_NORMAL 0
854	#define PRIO_LOW -1
855	#define PRIO_IDLE -3
856	#define PRIO_MIN -4
857
858	/* for Coro.pm */
859	static GV coro_current, coro_idle;
860	static AV *coro_ready [PRIO_MAX-PRIO_MIN+1];
861	static int coro_nready;
862
863	static void	1080	static void
864	coro_enq (SV *sv)	1081	coro_enq (pTHX_ SV *coro_sv)
865	{	1082	{
866	int prio;
867
868	if (SvTYPE (sv) != SVt_PVHV)
869	croak ("Coro::ready tried to enqueue something that is not a coroutine");
870
871	prio = SvSTATE (sv)->prio;
872
873	av_push (coro_ready [prio - PRIO_MIN], sv);	1083	av_push (coro_ready [SvSTATE (coro_sv)->prio - PRIO_MIN], coro_sv);
874	coro_nready++;
875	}	1084	}
876		1085
877	static SV *	1086	static SV *
878	coro_deq (int min_prio)	1087	coro_deq (pTHX_ int min_prio)
879	{	1088	{
880	int prio = PRIO_MAX - PRIO_MIN;	1089	int prio = PRIO_MAX - PRIO_MIN;
881		1090
882	min_prio -= PRIO_MIN;	1091	min_prio -= PRIO_MIN;
883	if (min_prio < 0)	1092	if (min_prio < 0)
884	min_prio = 0;	1093	min_prio = 0;
885		1094
886	for (prio = PRIO_MAX - PRIO_MIN + 1; --prio >= min_prio; )	1095	for (prio = PRIO_MAX - PRIO_MIN + 1; --prio >= min_prio; )
887	if (AvFILLp (coro_ready [prio]) >= 0)	1096	if (AvFILLp (coro_ready [prio]) >= 0)
888	{
889	coro_nready--;
890	return av_shift (coro_ready [prio]);	1097	return av_shift (coro_ready [prio]);
891	}
892		1098
893	return 0;	1099	return 0;
894	}	1100	}
895		1101
896	static void	1102	static int
897	api_ready (SV *coro)	1103	api_ready (SV *coro_sv)
898	{	1104	{
899	dTHX;	1105	dTHX;
		1106	struct coro *coro;
900		1107
901	if (SvROK (coro))	1108	if (SvROK (coro_sv))
902	coro = SvRV (coro);	1109	coro_sv = SvRV (coro_sv);
		1110
		1111	coro = SvSTATE (coro_sv);
		1112
		1113	if (coro->flags & CF_READY)
		1114	return 0;
		1115
		1116	coro->flags \|= CF_READY;
903		1117
904	LOCK;	1118	LOCK;
905	coro_enq (SvREFCNT_inc (coro));	1119	coro_enq (aTHX_ SvREFCNT_inc (coro_sv));
		1120	++coro_nready;
906	UNLOCK;	1121	UNLOCK;
907	}
908		1122
		1123	return 1;
		1124	}
		1125
909	static void	1126	static int
		1127	api_is_ready (SV *coro_sv)
		1128	{
		1129	dTHX;
		1130	return !!(SvSTATE (coro_sv)->flags & CF_READY);
		1131	}
		1132
		1133	static void
910	prepare_schedule (struct transfer_args *ta)	1134	prepare_schedule (pTHX_ struct transfer_args *ta)
911	{	1135	{
912	SV current, prev, *next;	1136	SV prev_sv, next_sv;
		1137
		1138	for (;;)
		1139	{
		1140	LOCK;
		1141	next_sv = coro_deq (aTHX_ PRIO_MIN);
		1142
		1143	/* nothing to schedule: call the idle handler */
		1144	if (!next_sv)
		1145	{
		1146	dSP;
		1147	UNLOCK;
		1148
		1149	ENTER;
		1150	SAVETMPS;
		1151
		1152	PUSHMARK (SP);
		1153	PUTBACK;
		1154	call_sv (get_sv ("Coro::idle", FALSE), G_DISCARD);
		1155
		1156	FREETMPS;
		1157	LEAVE;
		1158	continue;
		1159	}
		1160
		1161	ta->next = SvSTATE (next_sv);
		1162
		1163	/* cannot transfer to destroyed coros, skip and look for next */
		1164	if (ta->next->flags & CF_DESTROYED)
		1165	{
		1166	UNLOCK;
		1167	SvREFCNT_dec (next_sv);
		1168	/* coro_nready is already taken care of by destroy */
		1169	continue;
		1170	}
		1171
		1172	--coro_nready;
		1173	UNLOCK;
		1174	break;
		1175	}
		1176
		1177	/* free this only after the transfer */
		1178	prev_sv = SvRV (coro_current);
		1179	SvRV_set (coro_current, next_sv);
		1180	ta->prev = SvSTATE (prev_sv);
		1181
		1182	assert (ta->next->flags & CF_READY);
		1183	ta->next->flags &= ~CF_READY;
913		1184
914	LOCK;	1185	LOCK;
915
916	current = GvSV (coro_current);
917
918	for (;;)
919	{
920	LOCK;
921
922	next = coro_deq (PRIO_MIN);
923
924	if (next)
925	break;
926
927	UNLOCK;
928
929	{
930	dSP;
931
932	ENTER;
933	SAVETMPS;
934
935	PUSHMARK (SP);
936	PUTBACK;
937	call_sv (GvSV (coro_idle), G_DISCARD);
938
939	FREETMPS;
940	LEAVE;
941	}
942	}
943
944	prev = SvRV (current);
945	SvRV (current) = next;
946
947	/* free this only after the transfer */
948	free_coro_mortal ();	1186	free_coro_mortal (aTHX);
949	coro_mortal = prev;	1187	coro_mortal = prev_sv;
950
951	ta->prev = SvSTATE (prev);
952	ta->next = SvSTATE (next);
953	ta->flags = TRANSFER_SAVE_ALL;
954
955	UNLOCK;	1188	UNLOCK;
956	}	1189	}
957		1190
958	static void	1191	static void
959	prepare_cede (struct transfer_args *ta)	1192	prepare_cede (pTHX_ struct transfer_args *ta)
960	{	1193	{
961	LOCK;	1194	api_ready (coro_current);
962	coro_enq (SvREFCNT_inc (SvRV (GvSV (coro_current))));
963	UNLOCK;
964
965	prepare_schedule (ta);	1195	prepare_schedule (aTHX_ ta);
		1196	}
		1197
		1198	static int
		1199	prepare_cede_notself (pTHX_ struct transfer_args *ta)
		1200	{
		1201	if (coro_nready)
		1202	{
		1203	SV *prev = SvRV (coro_current);
		1204	prepare_schedule (aTHX_ ta);
		1205	api_ready (prev);
		1206	return 1;
		1207	}
		1208	else
		1209	return 0;
966	}	1210	}
967		1211
968	static void	1212	static void
969	api_schedule (void)	1213	api_schedule (void)
970	{	1214	{
971	dTHX;	1215	dTHX;
972	struct transfer_args ta;	1216	struct transfer_args ta;
973		1217
974	prepare_schedule (&ta);	1218	prepare_schedule (aTHX_ &ta);
975	TRANSFER (ta);	1219	TRANSFER (ta);
976	}	1220	}
977		1221
978	static void	1222	static int
979	api_cede (void)	1223	api_cede (void)
980	{	1224	{
981	dTHX;	1225	dTHX;
982	struct transfer_args ta;	1226	struct transfer_args ta;
983		1227
984	prepare_cede (&ta);	1228	prepare_cede (aTHX_ &ta);
		1229
		1230	if (ta.prev != ta.next)
		1231	{
985	TRANSFER (ta);	1232	TRANSFER (ta);
		1233	return 1;
		1234	}
		1235	else
		1236	return 0;
		1237	}
		1238
		1239	static int
		1240	api_cede_notself (void)
		1241	{
		1242	dTHX;
		1243	struct transfer_args ta;
		1244
		1245	if (prepare_cede_notself (aTHX_ &ta))
		1246	{
		1247	TRANSFER (ta);
		1248	return 1;
		1249	}
		1250	else
		1251	return 0;
986	}	1252	}
987		1253
988	MODULE = Coro::State PACKAGE = Coro::State	1254	MODULE = Coro::State PACKAGE = Coro::State
989		1255
990	PROTOTYPES: DISABLE	1256	PROTOTYPES: DISABLE
…		…
996	#endif	1262	#endif
997	BOOT_PAGESIZE;	1263	BOOT_PAGESIZE;
998		1264
999	coro_state_stash = gv_stashpv ("Coro::State", TRUE);	1265	coro_state_stash = gv_stashpv ("Coro::State", TRUE);
1000		1266
1001	newCONSTSUB (coro_state_stash, "SAVE_DEFAV", newSViv (TRANSFER_SAVE_DEFAV));	1267	newCONSTSUB (coro_state_stash, "SAVE_DEFAV", newSViv (CORO_SAVE_DEFAV));
1002	newCONSTSUB (coro_state_stash, "SAVE_DEFSV", newSViv (TRANSFER_SAVE_DEFSV));	1268	newCONSTSUB (coro_state_stash, "SAVE_DEFSV", newSViv (CORO_SAVE_DEFSV));
1003	newCONSTSUB (coro_state_stash, "SAVE_ERRSV", newSViv (TRANSFER_SAVE_ERRSV));	1269	newCONSTSUB (coro_state_stash, "SAVE_ERRSV", newSViv (CORO_SAVE_ERRSV));
		1270	newCONSTSUB (coro_state_stash, "SAVE_IRSSV", newSViv (CORO_SAVE_IRSSV));
		1271	newCONSTSUB (coro_state_stash, "SAVE_DEFFH", newSViv (CORO_SAVE_DEFFH));
		1272	newCONSTSUB (coro_state_stash, "SAVE_DEF", newSViv (CORO_SAVE_DEF));
		1273	newCONSTSUB (coro_state_stash, "SAVE_ALL", newSViv (CORO_SAVE_ALL));
1004		1274
1005	main_mainstack = PL_mainstack;	1275	main_mainstack = PL_mainstack;
		1276	main_top_env = PL_top_env;
		1277
		1278	while (main_top_env->je_prev)
		1279	main_top_env = main_top_env->je_prev;
1006		1280
1007	coroapi.ver = CORO_API_VERSION;	1281	coroapi.ver = CORO_API_VERSION;
1008	coroapi.transfer = api_transfer;	1282	coroapi.transfer = api_transfer;
1009		1283
1010	assert (("PRIO_NORMAL must be 0", !PRIO_NORMAL));	1284	assert (("PRIO_NORMAL must be 0", !PRIO_NORMAL));
…		…
1018	HV *hv;	1292	HV *hv;
1019	int i;	1293	int i;
1020		1294
1021	Newz (0, coro, 1, struct coro);	1295	Newz (0, coro, 1, struct coro);
1022	coro->args = newAV ();	1296	coro->args = newAV ();
		1297	coro->save = CORO_SAVE_DEF;
		1298	coro->flags = CF_NEW;
1023		1299
		1300	if (coro_first) coro_first->prev = coro;
		1301	coro->next = coro_first;
		1302	coro_first = coro;
		1303
1024	hv = newHV ();	1304	coro->hv = hv = newHV ();
1025	sv_magicext ((SV )hv, 0, PERL_MAGIC_ext, &coro_state_vtbl, (char )coro, 0)->mg_flags \|= MGf_DUP;	1305	sv_magicext ((SV )hv, 0, PERL_MAGIC_ext, &coro_state_vtbl, (char )coro, 0)->mg_flags \|= MGf_DUP;
1026	RETVAL = sv_bless (newRV_noinc ((SV *)hv), gv_stashpv (klass, 1));	1306	RETVAL = sv_bless (newRV_noinc ((SV *)hv), gv_stashpv (klass, 1));
1027		1307
1028	for (i = 1; i < items; i++)	1308	for (i = 1; i < items; i++)
1029	av_push (coro->args, newSVsv (ST (i)));	1309	av_push (coro->args, newSVsv (ST (i)));
1030
1031	/coro->mainstack = 0; //actual work is done inside transfer /
1032	/coro->stack = 0;/
1033	}	1310	}
1034	OUTPUT:	1311	OUTPUT:
		1312	RETVAL
		1313
		1314	int
		1315	save (SV *coro, int new_save = -1)
		1316	CODE:
		1317	RETVAL = api_save (coro, new_save);
		1318	OUTPUT:
		1319	RETVAL
		1320
		1321	int
		1322	save_also (SV *coro_sv, int save_also)
		1323	CODE:
		1324	{
		1325	struct coro *coro = SvSTATE (coro_sv);
		1326	RETVAL = coro->save;
		1327	coro->save \|= save_also;
		1328	}
		1329	OUTPUT:
1035	RETVAL	1330	RETVAL
1036		1331
1037	void	1332	void
1038	_set_stacklevel (...)	1333	_set_stacklevel (...)
1039	ALIAS:	1334	ALIAS:
1040	Coro::State::transfer = 1	1335	Coro::State::transfer = 1
1041	Coro::schedule = 2	1336	Coro::schedule = 2
1042	Coro::cede = 3	1337	Coro::cede = 3
1043	Coro::Cont::yield = 4	1338	Coro::cede_notself = 4
1044	CODE:	1339	CODE:
1045	{	1340	{
1046	struct transfer_args ta;	1341	struct transfer_args ta;
1047		1342
1048	switch (ix)	1343	switch (ix)
1049	{	1344	{
1050	case 0:	1345	case 0:
1051	ta.prev = (struct coro )INT2PTR (coro_stack , SvIV (ST (0)));	1346	ta.prev = (struct coro )INT2PTR (coro_cctx , SvIV (ST (0)));
1052	ta.next = 0;	1347	ta.next = 0;
1053	ta.flags = TRANSFER_SET_STACKLEVEL;
1054	break;	1348	break;
1055		1349
1056	case 1:	1350	case 1:
1057	if (items != 3)	1351	if (items != 2)
1058	croak ("Coro::State::transfer(prev,next,flags) expects three arguments, not %d", items);	1352	croak ("Coro::State::transfer (prev,next) expects two arguments, not %d", items);
1059		1353
1060	prepare_transfer (&ta, ST (0), ST (1), SvIV (ST (2)));	1354	prepare_transfer (aTHX_ &ta, ST (0), ST (1));
1061	break;	1355	break;
1062		1356
1063	case 2:	1357	case 2:
1064	prepare_schedule (&ta);	1358	prepare_schedule (aTHX_ &ta);
1065	break;	1359	break;
1066		1360
1067	case 3:	1361	case 3:
1068	prepare_cede (&ta);	1362	prepare_cede (aTHX_ &ta);
1069	break;	1363	break;
1070		1364
1071	case 4:	1365	case 4:
1072	{	1366	if (!prepare_cede_notself (aTHX_ &ta))
1073	SV *yieldstack;	1367	XSRETURN_EMPTY;
1074	SV *sv;
1075	AV *defav = GvAV (PL_defgv);
1076		1368
1077	yieldstack = *hv_fetch (
1078	(HV *)SvRV (GvSV (coro_current)),
1079	"yieldstack", sizeof ("yieldstack") - 1,
1080	0
1081	);
1082
1083	/* set up @_ -- ugly */
1084	av_clear (defav);
1085	av_fill (defav, items - 1);
1086	while (items--)
1087	av_store (defav, items, SvREFCNT_inc (ST(items)));
1088
1089	sv = av_pop ((AV *)SvRV (yieldstack));
1090	ta.prev = SvSTATE (av_fetch ((AV )SvRV (sv), 0, 0));
1091	ta.next = SvSTATE (av_fetch ((AV )SvRV (sv), 1, 0));
1092	ta.flags = 0;
1093	SvREFCNT_dec (sv);
1094	}
1095	break;	1369	break;
1096
1097	}	1370	}
1098		1371
		1372	BARRIER;
1099	TRANSFER (ta);	1373	TRANSFER (ta);
1100	}
1101		1374
1102	void	1375	if (GIMME_V != G_VOID && ta.next != ta.prev)
1103	_clone_state_from (SV dst, SV src)	1376	XSRETURN_YES;
		1377	}
		1378
		1379	bool
		1380	_destroy (SV *coro_sv)
1104	CODE:	1381	CODE:
1105	{	1382	RETVAL = coro_state_destroy (aTHX_ SvSTATE (coro_sv));
1106	struct coro *coro_src = SvSTATE (src);	1383	OUTPUT:
1107		1384	RETVAL
1108	sv_unmagic (SvRV (dst), PERL_MAGIC_ext);
1109
1110	++coro_src->refcnt;
1111	sv_magicext (SvRV (dst), 0, PERL_MAGIC_ext, &coro_state_vtbl, (char *)coro_src, 0)->mg_flags \|= MGf_DUP;
1112	}
1113
1114	void
1115	_nonlocal_goto (IV nextop)
1116	CODE:
1117	/* uuh, somebody will kill me again for this */
1118	PL_op->op_next = INT2PTR (OP *, nextop);
1119		1385
1120	void	1386	void
1121	_exit (code)	1387	_exit (code)
1122	int code	1388	int code
1123	PROTOTYPE: $	1389	PROTOTYPE: $
1124	CODE:	1390	CODE:
1125	_exit (code);	1391	_exit (code);
1126		1392
		1393	int
		1394	cctx_stacksize (int new_stacksize = 0)
		1395	CODE:
		1396	RETVAL = coro_stacksize;
		1397	if (new_stacksize)
		1398	coro_stacksize = new_stacksize;
		1399	OUTPUT:
		1400	RETVAL
		1401
		1402	int
		1403	cctx_count ()
		1404	CODE:
		1405	RETVAL = cctx_count;
		1406	OUTPUT:
		1407	RETVAL
		1408
		1409	int
		1410	cctx_idle ()
		1411	CODE:
		1412	RETVAL = cctx_idle;
		1413	OUTPUT:
		1414	RETVAL
		1415
		1416	void
		1417	list ()
		1418	PPCODE:
		1419	{
		1420	struct coro *coro;
		1421	for (coro = coro_first; coro; coro = coro->next)
		1422	if (coro->hv)
		1423	XPUSHs (sv_2mortal (newRV_inc ((SV *)coro->hv)));
		1424	}
		1425
		1426	void
		1427	call (Coro::State coro, SV *coderef)
		1428	ALIAS:
		1429	eval = 1
		1430	CODE:
		1431	{
		1432	if (coro->mainstack)
		1433	{
		1434	struct coro temp;
		1435	Zero (&temp, 1, struct coro);
		1436	temp.save = CORO_SAVE_ALL;
		1437
		1438	if (!(coro->flags & CF_RUNNING))
		1439	{
		1440	save_perl (aTHX_ &temp);
		1441	load_perl (aTHX_ coro);
		1442	}
		1443
		1444	{
		1445	dSP;
		1446	ENTER;
		1447	SAVETMPS;
		1448	PUSHMARK (SP);
		1449	PUTBACK;
		1450	if (ix)
		1451	eval_sv (coderef, 0);
		1452	else
		1453	call_sv (coderef, G_KEEPERR \| G_EVAL \| G_VOID \| G_DISCARD);
		1454	SPAGAIN;
		1455	FREETMPS;
		1456	LEAVE;
		1457	PUTBACK;
		1458	}
		1459
		1460	if (!(coro->flags & CF_RUNNING))
		1461	{
		1462	save_perl (aTHX_ coro);
		1463	load_perl (aTHX_ &temp);
		1464	}
		1465	}
		1466	}
		1467
		1468	SV *
		1469	is_ready (Coro::State coro)
		1470	PROTOTYPE: $
		1471	ALIAS:
		1472	is_ready = CF_READY
		1473	is_running = CF_RUNNING
		1474	is_new = CF_NEW
		1475	is_destroyed = CF_DESTROYED
		1476	CODE:
		1477	RETVAL = boolSV (coro->flags & ix);
		1478	OUTPUT:
		1479	RETVAL
		1480
		1481	void
		1482	trace (Coro::State coro, int enable = 0)
		1483	CODE:
		1484	if (enable)
		1485	{
		1486	if (coro->flags & CF_RUNNING)
		1487	croak ("cannot enable tracing on running coroutine");
		1488
		1489	if (coro->cctx)
		1490	croak ("cannot enable tracing on coroutine with custom stack");
		1491
		1492	coro->cctx = cctx_new ();
		1493	coro->cctx->flags \|= CC_TRACE;
		1494	}
		1495	else
		1496	if (coro->cctx && coro->cctx->flags & CC_TRACE)
		1497	{
		1498	coro->cctx->flags &= ~CC_TRACE;
		1499	coro->cctx->flags \|= CC_NOREUSE;
		1500	}
		1501
		1502	SV *
		1503	has_stack (Coro::State coro)
		1504	PROTOTYPE: $
		1505	CODE:
		1506	RETVAL = boolSV (!!coro->cctx);
		1507	OUTPUT:
		1508	RETVAL
		1509
		1510	IV
		1511	rss (Coro::State coro)
		1512	PROTOTYPE: $
		1513	CODE:
		1514	RETVAL = coro_rss (coro);
		1515	OUTPUT:
		1516	RETVAL
		1517
		1518
1127	MODULE = Coro::State PACKAGE = Coro	1519	MODULE = Coro::State PACKAGE = Coro
1128		1520
1129	BOOT:	1521	BOOT:
1130	{	1522	{
1131	int i;	1523	int i;
		1524
		1525	sv_pool_rss = get_sv ("Coro::POOL_RSS" , TRUE);
		1526	sv_pool_size = get_sv ("Coro::POOL_SIZE" , TRUE);
		1527	av_async_pool = get_av ("Coro::async_pool", TRUE);
		1528
		1529	coro_current = get_sv ("Coro::current", FALSE);
		1530	SvREADONLY_on (coro_current);
1132		1531
1133	coro_stash = gv_stashpv ("Coro", TRUE);	1532	coro_stash = gv_stashpv ("Coro", TRUE);
1134		1533
1135	newCONSTSUB (coro_stash, "PRIO_MAX", newSViv (PRIO_MAX));	1534	newCONSTSUB (coro_stash, "PRIO_MAX", newSViv (PRIO_MAX));
1136	newCONSTSUB (coro_stash, "PRIO_HIGH", newSViv (PRIO_HIGH));	1535	newCONSTSUB (coro_stash, "PRIO_HIGH", newSViv (PRIO_HIGH));
1137	newCONSTSUB (coro_stash, "PRIO_NORMAL", newSViv (PRIO_NORMAL));	1536	newCONSTSUB (coro_stash, "PRIO_NORMAL", newSViv (PRIO_NORMAL));
1138	newCONSTSUB (coro_stash, "PRIO_LOW", newSViv (PRIO_LOW));	1537	newCONSTSUB (coro_stash, "PRIO_LOW", newSViv (PRIO_LOW));
1139	newCONSTSUB (coro_stash, "PRIO_IDLE", newSViv (PRIO_IDLE));	1538	newCONSTSUB (coro_stash, "PRIO_IDLE", newSViv (PRIO_IDLE));
1140	newCONSTSUB (coro_stash, "PRIO_MIN", newSViv (PRIO_MIN));	1539	newCONSTSUB (coro_stash, "PRIO_MIN", newSViv (PRIO_MIN));
1141		1540
1142	coro_current = gv_fetchpv ("Coro::current", TRUE, SVt_PV);
1143	coro_idle = gv_fetchpv ("Coro::idle" , TRUE, SVt_PV);
1144
1145	for (i = PRIO_MAX - PRIO_MIN + 1; i--; )	1541	for (i = PRIO_MAX - PRIO_MIN + 1; i--; )
1146	coro_ready[i] = newAV ();	1542	coro_ready[i] = newAV ();
1147		1543
1148	{	1544	{
1149	SV *sv = perl_get_sv("Coro::API", 1);	1545	SV *sv = perl_get_sv("Coro::API", 1);
1150		1546
1151	coroapi.schedule = api_schedule;	1547	coroapi.schedule = api_schedule;
		1548	coroapi.save = api_save;
1152	coroapi.cede = api_cede;	1549	coroapi.cede = api_cede;
		1550	coroapi.cede_notself = api_cede_notself;
1153	coroapi.ready = api_ready;	1551	coroapi.ready = api_ready;
		1552	coroapi.is_ready = api_is_ready;
1154	coroapi.nready = &coro_nready;	1553	coroapi.nready = &coro_nready;
1155	coroapi.current = coro_current;	1554	coroapi.current = coro_current;
1156		1555
1157	GCoroAPI = &coroapi;	1556	GCoroAPI = &coroapi;
1158	sv_setiv (sv, (IV)&coroapi);	1557	sv_setiv (sv, (IV)&coroapi);
1159	SvREADONLY_on (sv);	1558	SvREADONLY_on (sv);
1160	}	1559	}
1161	}	1560	}
		1561
		1562	void
		1563	_set_current (SV *current)
		1564	PROTOTYPE: $
		1565	CODE:
		1566	SvREFCNT_dec (SvRV (coro_current));
		1567	SvRV_set (coro_current, SvREFCNT_inc (SvRV (current)));
1162		1568
1163	int	1569	int
1164	prio (Coro::State coro, int newprio = 0)	1570	prio (Coro::State coro, int newprio = 0)
1165	ALIAS:	1571	ALIAS:
1166	nice = 1	1572	nice = 1
…		…
1169	RETVAL = coro->prio;	1575	RETVAL = coro->prio;
1170		1576
1171	if (items > 1)	1577	if (items > 1)
1172	{	1578	{
1173	if (ix)	1579	if (ix)
1174	newprio += coro->prio;	1580	newprio = coro->prio - newprio;
1175		1581
1176	if (newprio < PRIO_MIN) newprio = PRIO_MIN;	1582	if (newprio < PRIO_MIN) newprio = PRIO_MIN;
1177	if (newprio > PRIO_MAX) newprio = PRIO_MAX;	1583	if (newprio > PRIO_MAX) newprio = PRIO_MAX;
1178		1584
1179	coro->prio = newprio;	1585	coro->prio = newprio;
1180	}	1586	}
1181	}	1587	}
		1588	OUTPUT:
		1589	RETVAL
1182		1590
1183	void	1591	SV *
1184	ready (SV *self)	1592	ready (SV *self)
1185	PROTOTYPE: $	1593	PROTOTYPE: $
1186	CODE:	1594	CODE:
1187	api_ready (self);	1595	RETVAL = boolSV (api_ready (self));
		1596	OUTPUT:
		1597	RETVAL
1188		1598
1189	int	1599	int
1190	nready (...)	1600	nready (...)
1191	PROTOTYPE:	1601	PROTOTYPE:
1192	CODE:	1602	CODE:
1193	RETVAL = coro_nready;	1603	RETVAL = coro_nready;
1194	OUTPUT:	1604	OUTPUT:
1195	RETVAL	1605	RETVAL
1196		1606
		1607	# for async_pool speedup
		1608	void
		1609	_pool_1 (SV *cb)
		1610	CODE:
		1611	{
		1612	int i, len;
		1613	HV hv = (HV )SvRV (coro_current);
		1614	AV *defav = GvAV (PL_defgv);
		1615	SV *invoke = hv_delete (hv, "_invoke", sizeof ("_invoke") - 1, 0);
		1616	AV *invoke_av;
		1617
		1618	if (!invoke)
		1619	croak ("\3terminate\2\n");
		1620
		1621	hv_store (hv, "desc", sizeof ("desc") - 1,
		1622	newSVpvn ("[async_pool]", sizeof ("[async_pool]") - 1), 0);
		1623
		1624	invoke_av = (AV *)SvRV (invoke);
		1625	len = av_len (invoke_av);
		1626
		1627	sv_setsv (cb, AvARRAY (invoke_av)[0]);
		1628
		1629	if (len > 0)
		1630	{
		1631	av_fill (defav, len - 1);
		1632	for (i = 0; i < len; ++i)
		1633	av_store (defav, i, SvREFCNT_inc (AvARRAY (invoke_av)[i + 1]));
		1634	}
		1635
		1636	SvREFCNT_dec (invoke);
		1637	}
		1638
		1639	void
		1640	_pool_2 (SV *cb)
		1641	CODE:
		1642	{
		1643	struct coro *coro = SvSTATE (coro_current);
		1644
		1645	sv_setsv (cb, &PL_sv_undef);
		1646
		1647	if (coro_rss (coro) > SvIV (sv_pool_rss)
		1648	\|\| av_len (av_async_pool) + 1 >= SvIV (sv_pool_size))
		1649	croak ("\3terminate\2\n");
		1650
		1651	av_clear (GvAV (PL_defgv));
		1652	hv_store ((HV *)SvRV (coro_current), "desc", sizeof ("desc") - 1,
		1653	newSVpvn ("[async_pool idle]", sizeof ("[async_pool idle]") - 1), 0);
		1654	coro->save = CORO_SAVE_DEF;
		1655	coro->prio = 0;
		1656	av_push (av_async_pool, newSVsv (coro_current));
		1657	}
		1658
		1659
1197	MODULE = Coro::State PACKAGE = Coro::AIO	1660	MODULE = Coro::State PACKAGE = Coro::AIO
1198		1661
1199	SV *	1662	SV *
1200	_get_state ()	1663	_get_state ()
1201	CODE:	1664	CODE:
1202	{	1665	{
1203	struct {	1666	struct io_state *data;
1204	int errorno;
1205	int laststype;
1206	int laststatval;
1207	Stat_t statcache;
1208	} data;
1209		1667
		1668	RETVAL = newSV (sizeof (struct io_state));
		1669	data = (struct io_state *)SvPVX (RETVAL);
		1670	SvCUR_set (RETVAL, sizeof (struct io_state));
		1671	SvPOK_only (RETVAL);
		1672
1210	data.errorno = errno;	1673	data->errorno = errno;
1211	data.laststype = PL_laststype;	1674	data->laststype = PL_laststype;
1212	data.laststatval = PL_laststatval;	1675	data->laststatval = PL_laststatval;
1213	data.statcache = PL_statcache;	1676	data->statcache = PL_statcache;
1214
1215	RETVAL = newSVpvn ((char *)&data, sizeof data);
1216	}	1677	}
1217	OUTPUT:	1678	OUTPUT:
1218	RETVAL	1679	RETVAL
1219		1680
1220	void	1681	void
1221	_set_state (char *data_)	1682	_set_state (char *data_)
1222	PROTOTYPE: $	1683	PROTOTYPE: $
1223	CODE:	1684	CODE:
1224	{	1685	{
1225	struct {	1686	struct io_state data = (void )data_;
1226	int errorno;
1227	int laststype;
1228	int laststatval;
1229	Stat_t statcache;
1230	} data = (void )data_;
1231		1687
1232	errno = data->errorno;	1688	errno = data->errorno;
1233	PL_laststype = data->laststype;	1689	PL_laststype = data->laststype;
1234	PL_laststatval = data->laststatval;	1690	PL_laststatval = data->laststatval;
1235	PL_statcache = data->statcache;	1691	PL_statcache = data->statcache;
1236	}	1692	}
		1693

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Comparing Coro/Coro/State.xs (file contents): Revision 1.98 by root, Sun Nov 26 21:25:53 2006 UTC vs. Revision 1.165 by root, Wed Sep 26 19:26:48 2007 UTC

Diff Legend

Comparing Coro/Coro/State.xs (file contents):
Revision 1.98 by root, Sun Nov 26 21:25:53 2006 UTC vs.
Revision 1.165 by root, Wed Sep 26 19:26:48 2007 UTC