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

Comparing Coro/Coro/State.xs (file contents):
Revision 1.100 by root, Mon Nov 27 00:07:49 2006 UTC vs.
Revision 1.167 by root, Thu Sep 27 15:52:31 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"
		10
		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
8		47
9	#define PERL_VERSION_ATLEAST(a,b,c) \	48	#define PERL_VERSION_ATLEAST(a,b,c) \
10	(PERL_REVISION > (a) \	49	(PERL_REVISION > (a) \
11	\|\| (PERL_REVISION == (a) \	50	\|\| (PERL_REVISION == (a) \
12	&& (PERL_VERSION > (b) \	51	&& (PERL_VERSION > (b) \
31	# ifndef IS_PADCONST	70	# ifndef IS_PADCONST
32	# define IS_PADCONST(v) 0	71	# define IS_PADCONST(v) 0
33	# endif	72	# endif
34	#endif	73	#endif
35		74
36	#include <stdio.h>	75	/* 5.8.7 */
37	#include <errno.h>	76	#ifndef SvRV_set
		77	# define SvRV_set(s,v) SvRV(s) = (v)
		78	#endif
38		79
39	#if !__i386 && !__x86_64 && !__powerpc && !__m68k && !__alpha && !__mips && !__sparc64	80	#if !__i386 && !__x86_64 && !__powerpc && !__m68k && !__alpha && !__mips && !__sparc64
40	# undef STACKGUARD	81	# undef CORO_STACKGUARD
41	#endif
42
43	#ifndef STACKGUARD
44	# define STACKGUARD 0
45	#endif
46
47	#ifdef HAVE_MMAP
48	# include <unistd.h>
49	# include <sys/mman.h>
50	# ifndef MAP_ANONYMOUS
51	# ifdef MAP_ANON
52	# define MAP_ANONYMOUS MAP_ANON
53	# else
54	# undef HAVE_MMAP
55	# endif
56	# endif	82	#endif
57	# include <limits.h>	83
58	# ifndef PAGESIZE	84	#ifndef CORO_STACKGUARD
59	# define PAGESIZE pagesize	85	# define CORO_STACKGUARD 0
60	# define BOOT_PAGESIZE pagesize = sysconf (_SC_PAGESIZE)
61	static long pagesize;
62	# else
63	# define BOOT_PAGESIZE
64	# endif	86	#endif
65	#endif
66		87
67	/* The next macro should declare a variable stacklevel that contains and approximation	88	/* prefer perl internal functions over our own? */
68	* to the current C stack pointer. Its property is that it changes with each call	89	#ifndef CORO_PREFER_PERL_FUNCTIONS
69	* 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. */
70	#define dSTACKLEVEL int stacklevel	95	#define dSTACKLEVEL volatile char stacklevel
71	#define STACKLEVEL ((void *)&stacklevel)	96	#define STACKLEVEL ((void *)&stacklevel)
72		97
73	#define IN_DESTRUCT (PL_main_cv == Nullcv)	98	#define IN_DESTRUCT (PL_main_cv == Nullcv)
74		99
75	#if __GNUC__ >= 3	100	#if __GNUC__ >= 3
76	# define attribute(x) __attribute__(x)	101	# define attribute(x) __attribute__(x)
		102	# define BARRIER __asm__ __volatile__ ("" : : : "memory")
77	#else	103	#else
78	# define attribute(x)	104	# define attribute(x)
		105	# define BARRIER
79	#endif	106	#endif
80		107
81	#define NOINLINE attribute ((noinline))	108	#define NOINLINE attribute ((noinline))
82		109
83	#include "CoroAPI.h"	110	#include "CoroAPI.h"
84
85	#define TRANSFER_SET_STACKLEVEL 0x8bfbfbfb /* magic cookie */
86		111
87	#ifdef USE_ITHREADS	112	#ifdef USE_ITHREADS
88	static perl_mutex coro_mutex;	113	static perl_mutex coro_mutex;
89	# define LOCK do { MUTEX_LOCK (&coro_mutex); } while (0)	114	# define LOCK do { MUTEX_LOCK (&coro_mutex); } while (0)
90	# define UNLOCK do { MUTEX_UNLOCK (&coro_mutex); } while (0)	115	# define UNLOCK do { MUTEX_UNLOCK (&coro_mutex); } while (0)
91	#else	116	#else
92	# define LOCK (void)0	117	# define LOCK (void)0
93	# define UNLOCK (void)0	118	# define UNLOCK (void)0
94	#endif	119	#endif
95		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;
96	static struct CoroAPI coroapi;	131	static struct CoroAPI coroapi;
97	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;
98	static HV coro_state_stash, coro_stash;	134	static HV coro_state_stash, coro_stash;
99	static SV coro_mortal; / will be freed after next transfer */	135	static SV coro_mortal; / will be freed after next transfer */
100		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_NOREUSE = 0x02, /* throw this away after tracing */
		148	CC_TRACE = 0x04,
		149	CC_TRACE_SUB = 0x08, /* trace sub calls */
		150	CC_TRACE_LINE = 0x10, /* trace each statement */
		151	CC_TRACE_ALL = CC_TRACE_SUB \| CC_TRACE_LINE,
		152	};
		153
101	/* this is a structure representing a c-level coroutine */	154	/* this is a structure representing a c-level coroutine */
102	typedef struct coro_stack {	155	typedef struct coro_cctx {
103	struct coro_stack *next;	156	struct coro_cctx *next;
104		157
105	/* the stack */	158	/* the stack */
106	void *sptr;	159	void *sptr;
107	long ssize; /* positive == mmap, otherwise malloc */	160	size_t ssize;
108		161
109	/* cpu state */	162	/* cpu state */
110	void idle_sp; / sp of top-level transfer/schedule/cede call */	163	void idle_sp; / sp of top-level transfer/schedule/cede call */
		164	JMPENV idle_te; / same as idle_sp, but for top_env, TODO: remove once stable */
111	JMPENV *top_env;	165	JMPENV *top_env;
112	coro_context cctx;	166	coro_context cctx;
113	} coro_stack;	167
		168	#if CORO_USE_VALGRIND
		169	int valgrind_id;
		170	#endif
		171	unsigned char flags;
		172	} coro_cctx;
		173
		174	enum {
		175	CF_RUNNING = 0x0001, /* coroutine is running */
		176	CF_READY = 0x0002, /* coroutine is ready */
		177	CF_NEW = 0x0004, /* has never been switched to */
		178	CF_DESTROYED = 0x0008, /* coroutine data has been freed */
		179	};
114		180
115	/* this is a structure representing a perl-level coroutine */	181	/* this is a structure representing a perl-level coroutine */
116	struct coro {	182	struct coro {
117	/* the c coroutine allocated to this perl coroutine, if any */	183	/* the c coroutine allocated to this perl coroutine, if any */
118	coro_stack *stack;	184	coro_cctx *cctx;
119		185
120	/* data associated with this coroutine (initial args) */	186	/* data associated with this coroutine (initial args) */
121	AV *args;	187	AV *args;
122	int refcnt;	188	int refcnt;
		189	int save; /* CORO_SAVE flags */
		190	int flags; /* CF_ flags */
123		191
124	/* optionally saved, might be zero */	192	/* optionally saved, might be zero */
125	AV *defav;	193	AV defav; / @_ */
126	SV *defsv;	194	SV defsv; / $_ */
127	SV *errsv;	195	SV errsv; / $@ */
		196	GV deffh; / default filehandle */
		197	SV irssv; / $/ */
		198	SV irssv_sv; / real $/ cache */
128		199
129	/* saved global state not related to stacks */	200	#define VAR(name,type) type name;
130	U8 dowarn;	201	# include "state.h"
131	I32 in_eval;	202	#undef VAR
132
133	/* the stacks and related info (callchain etc..) */
134	PERL_SI *curstackinfo;
135	AV *curstack;
136	AV *mainstack;
137	SV **stack_sp;
138	OP *op;
139	SV **curpad;
140	AV *comppad;
141	CV *compcv;
142	SV **stack_base;
143	SV **stack_max;
144	SV **tmps_stack;
145	I32 tmps_floor;
146	I32 tmps_ix;
147	I32 tmps_max;
148	I32 *markstack;
149	I32 *markstack_ptr;
150	I32 *markstack_max;
151	I32 *scopestack;
152	I32 scopestack_ix;
153	I32 scopestack_max;
154	ANY *savestack;
155	I32 savestack_ix;
156	I32 savestack_max;
157	OP **retstack;
158	I32 retstack_ix;
159	I32 retstack_max;
160	PMOP *curpm;
161	COP *curcop;
162		203
163	/* coro process data */	204	/* coro process data */
164	int prio;	205	int prio;
		206
		207	/* linked list */
		208	struct coro next, prev;
		209	HV hv; / the perl hash associated with this coro, if any */
165	};	210	};
166		211
167	typedef struct coro *Coro__State;	212	typedef struct coro *Coro__State;
168	typedef struct coro *Coro__State_or_hashref;	213	typedef struct coro *Coro__State_or_hashref;
169		214
		215	/ Coro ******************************************************************/
		216
		217	#define PRIO_MAX 3
		218	#define PRIO_HIGH 1
		219	#define PRIO_NORMAL 0
		220	#define PRIO_LOW -1
		221	#define PRIO_IDLE -3
		222	#define PRIO_MIN -4
		223
		224	/* for Coro.pm */
		225	static SV *coro_current;
		226	static AV *coro_ready [PRIO_MAX-PRIO_MIN+1];
		227	static int coro_nready;
		228	static struct coro *coro_first;
		229
		230	/ lowlevel stuff ********************************************************/
		231
170	static AV *	232	static AV *
171	coro_clone_padlist (CV *cv)	233	coro_clone_padlist (pTHX_ CV *cv)
172	{	234	{
173	AV *padlist = CvPADLIST (cv);	235	AV *padlist = CvPADLIST (cv);
174	AV newpadlist, newpad;	236	AV newpadlist, newpad;
175		237
176	newpadlist = newAV ();	238	newpadlist = newAV ();
…		…
188		250
189	return newpadlist;	251	return newpadlist;
190	}	252	}
191		253
192	static void	254	static void
193	free_padlist (AV *padlist)	255	free_padlist (pTHX_ AV *padlist)
194	{	256	{
195	/* may be during global destruction */	257	/* may be during global destruction */
196	if (SvREFCNT (padlist))	258	if (SvREFCNT (padlist))
197	{	259	{
198	I32 i = AvFILLp (padlist);	260	I32 i = AvFILLp (padlist);
…		…
219	AV *padlist;	281	AV *padlist;
220	AV av = (AV )mg->mg_obj;	282	AV av = (AV )mg->mg_obj;
221		283
222	/* casting is fun. */	284	/* casting is fun. */
223	while (&PL_sv_undef != (SV )(padlist = (AV )av_pop (av)))	285	while (&PL_sv_undef != (SV )(padlist = (AV )av_pop (av)))
224	free_padlist (padlist);	286	free_padlist (aTHX_ padlist);
225		287
226	SvREFCNT_dec (av);	288	SvREFCNT_dec (av);
227		289
228	return 0;	290	return 0;
229	}	291	}
230		292
231	#define PERL_MAGIC_coro PERL_MAGIC_ext	293	#define PERL_MAGIC_coro PERL_MAGIC_ext
232		294
233	static MGVTBL vtbl_coro = {0, 0, 0, 0, coro_cv_free};	295	static MGVTBL vtbl_coro = {0, 0, 0, 0, coro_cv_free};
		296
		297	#define CORO_MAGIC(cv) \
		298	SvMAGIC (cv) \
		299	? SvMAGIC (cv)->mg_type == PERL_MAGIC_coro \
		300	? SvMAGIC (cv) \
		301	: mg_find ((SV *)cv, PERL_MAGIC_coro) \
		302	: 0
234		303
235	/* the next two functions merely cache the padlists */	304	/* the next two functions merely cache the padlists */
236	static void	305	static void
237	get_padlist (CV *cv)	306	get_padlist (pTHX_ CV *cv)
238	{	307	{
239	MAGIC mg = mg_find ((SV )cv, PERL_MAGIC_coro);	308	MAGIC *mg = CORO_MAGIC (cv);
		309	AV *av;
240		310
241	if (mg && AvFILLp ((AV *)mg->mg_obj) >= 0)	311	if (mg && AvFILLp ((av = (AV *)mg->mg_obj)) >= 0)
242	CvPADLIST (cv) = (AV )av_pop ((AV )mg->mg_obj);	312	CvPADLIST (cv) = (AV *)AvARRAY (av)[AvFILLp (av)--];
243	else	313	else
244	{	314	{
245	#if 0	315	#if CORO_PREFER_PERL_FUNCTIONS
246	/* this is probably cleaner, but also slower? */	316	/* this is probably cleaner, but also slower? */
247	CV *cp = Perl_cv_clone (cv);	317	CV *cp = Perl_cv_clone (cv);
248	CvPADLIST (cv) = CvPADLIST (cp);	318	CvPADLIST (cv) = CvPADLIST (cp);
249	CvPADLIST (cp) = 0;	319	CvPADLIST (cp) = 0;
250	SvREFCNT_dec (cp);	320	SvREFCNT_dec (cp);
251	#else	321	#else
252	CvPADLIST (cv) = coro_clone_padlist (cv);	322	CvPADLIST (cv) = coro_clone_padlist (aTHX_ cv);
253	#endif	323	#endif
254	}	324	}
255	}	325	}
256		326
257	static void	327	static void
258	put_padlist (CV *cv)	328	put_padlist (pTHX_ CV *cv)
259	{	329	{
260	MAGIC mg = mg_find ((SV )cv, PERL_MAGIC_coro);	330	MAGIC *mg = CORO_MAGIC (cv);
		331	AV *av;
261		332
262	if (!mg)	333	if (!mg)
263	{	334	{
264	sv_magic ((SV *)cv, 0, PERL_MAGIC_coro, 0, 0);	335	sv_magic ((SV *)cv, 0, PERL_MAGIC_coro, 0, 0);
265	mg = mg_find ((SV *)cv, PERL_MAGIC_coro);	336	mg = mg_find ((SV *)cv, PERL_MAGIC_coro);
266	mg->mg_virtual = &vtbl_coro;	337	mg->mg_virtual = &vtbl_coro;
267	mg->mg_obj = (SV *)newAV ();	338	mg->mg_obj = (SV *)newAV ();
268	}	339	}
269		340
270	av_push ((AV )mg->mg_obj, (SV )CvPADLIST (cv));	341	av = (AV *)mg->mg_obj;
		342
		343	if (AvFILLp (av) >= AvMAX (av))
		344	av_extend (av, AvMAX (av) + 1);
		345
		346	AvARRAY (av)[++AvFILLp (av)] = (SV *)CvPADLIST (cv);
271	}	347	}
		348
		349	/ load & save, init *****************************************************/
272		350
273	#define SB do {	351	#define SB do {
274	#define SE } while (0)	352	#define SE } while (0)
275		353
276	#define LOAD(state) load_state((state));
277	#define SAVE(state,flags) save_state((state),(flags));
278
279	#define REPLACE_SV(sv,val) SB SvREFCNT_dec(sv); (sv) = (val); (val) = 0; SE	354	#define REPLACE_SV(sv,val) SB SvREFCNT_dec (sv); (sv) = (val); (val) = 0; SE
280		355
281	static void	356	static void
282	load_state(Coro__State c)	357	load_perl (pTHX_ Coro__State c)
283	{	358	{
284	PL_dowarn = c->dowarn;	359	#define VAR(name,type) PL_ ## name = c->name;
285	PL_in_eval = c->in_eval;	360	# include "state.h"
286		361	#undef VAR
287	PL_curstackinfo = c->curstackinfo;
288	PL_curstack = c->curstack;
289	PL_mainstack = c->mainstack;
290	PL_stack_sp = c->stack_sp;
291	PL_op = c->op;
292	PL_curpad = c->curpad;
293	PL_comppad = c->comppad;
294	PL_compcv = c->compcv;
295	PL_stack_base = c->stack_base;
296	PL_stack_max = c->stack_max;
297	PL_tmps_stack = c->tmps_stack;
298	PL_tmps_floor = c->tmps_floor;
299	PL_tmps_ix = c->tmps_ix;
300	PL_tmps_max = c->tmps_max;
301	PL_markstack = c->markstack;
302	PL_markstack_ptr = c->markstack_ptr;
303	PL_markstack_max = c->markstack_max;
304	PL_scopestack = c->scopestack;
305	PL_scopestack_ix = c->scopestack_ix;
306	PL_scopestack_max = c->scopestack_max;
307	PL_savestack = c->savestack;
308	PL_savestack_ix = c->savestack_ix;
309	PL_savestack_max = c->savestack_max;
310	#if !PERL_VERSION_ATLEAST (5,9,0)
311	PL_retstack = c->retstack;
312	PL_retstack_ix = c->retstack_ix;
313	PL_retstack_max = c->retstack_max;
314	#endif
315	PL_curpm = c->curpm;
316	PL_curcop = c->curcop;
317		362
318	if (c->defav) REPLACE_SV (GvAV (PL_defgv), c->defav);	363	if (c->defav) REPLACE_SV (GvAV (PL_defgv), c->defav);
319	if (c->defsv) REPLACE_SV (DEFSV , c->defsv);	364	if (c->defsv) REPLACE_SV (DEFSV , c->defsv);
320	if (c->errsv) REPLACE_SV (ERRSV , c->errsv);	365	if (c->errsv) REPLACE_SV (ERRSV , c->errsv);
		366	if (c->deffh) REPLACE_SV (PL_defoutgv , c->deffh);
		367
		368	if (c->irssv)
		369	{
		370	if (c->irssv == PL_rs \|\| sv_eq (PL_rs, c->irssv))
		371	{
		372	SvREFCNT_dec (c->irssv);
		373	c->irssv = 0;
		374	}
		375	else
		376	{
		377	REPLACE_SV (PL_rs, c->irssv);
		378	if (!c->irssv_sv) c->irssv_sv = get_sv ("/", 0);
		379	sv_setsv (c->irssv_sv, PL_rs);
		380	}
		381	}
321		382
322	{	383	{
323	dSP;	384	dSP;
324	CV *cv;	385	CV *cv;
325		386
326	/* now do the ugly restore mess */	387	/* now do the ugly restore mess */
327	while ((cv = (CV *)POPs))	388	while ((cv = (CV *)POPs))
328	{	389	{
329	AV padlist = (AV )POPs;
330
331	if (padlist)
332	{
333	put_padlist (cv); /* mark this padlist as available */	390	put_padlist (aTHX_ cv); /* mark this padlist as available */
334	CvPADLIST(cv) = padlist;	391	CvDEPTH (cv) = PTR2IV (POPs);
335	}	392	CvPADLIST (cv) = (AV *)POPs;
336
337	++CvDEPTH(cv);
338	}	393	}
339		394
340	PUTBACK;	395	PUTBACK;
341	}	396	}
342	}	397	}
343		398
344	static void	399	static void
345	save_state(Coro__State c, int flags)	400	save_perl (pTHX_ Coro__State c)
346	{	401	{
347	{	402	{
348	dSP;	403	dSP;
349	I32 cxix = cxstack_ix;	404	I32 cxix = cxstack_ix;
350	PERL_CONTEXT *ccstk = cxstack;	405	PERL_CONTEXT *ccstk = cxstack;
…		…
353	/*	408	/*
354	* the worst thing you can imagine happens first - we have to save	409	* the worst thing you can imagine happens first - we have to save
355	* (and reinitialize) all cv's in the whole callchain :(	410	* (and reinitialize) all cv's in the whole callchain :(
356	*/	411	*/
357		412
358	PUSHs (Nullsv);	413	XPUSHs (Nullsv);
359	/* this loop was inspired by pp_caller */	414	/* this loop was inspired by pp_caller */
360	for (;;)	415	for (;;)
361	{	416	{
362	while (cxix >= 0)	417	while (cxix >= 0)
363	{	418	{
364	PERL_CONTEXT *cx = &ccstk[cxix--];	419	PERL_CONTEXT *cx = &ccstk[cxix--];
365		420
366	if (CxTYPE(cx) == CXt_SUB)	421	if (CxTYPE (cx) == CXt_SUB \|\| CxTYPE (cx) == CXt_FORMAT)
367	{	422	{
368	CV *cv = cx->blk_sub.cv;	423	CV *cv = cx->blk_sub.cv;
		424
369	if (CvDEPTH(cv))	425	if (CvDEPTH (cv))
370	{	426	{
371	EXTEND (SP, CvDEPTH(cv)*2);	427	EXTEND (SP, 3);
372
373	while (--CvDEPTH(cv))
374	{
375	/* this tells the restore code to increment CvDEPTH */
376	PUSHs (Nullsv);
377	PUSHs ((SV *)cv);
378	}
379
380	PUSHs ((SV *)CvPADLIST(cv));	428	PUSHs ((SV *)CvPADLIST (cv));
		429	PUSHs (INT2PTR (SV *, CvDEPTH (cv)));
381	PUSHs ((SV *)cv);	430	PUSHs ((SV *)cv);
382		431
		432	CvDEPTH (cv) = 0;
383	get_padlist (cv);	433	get_padlist (aTHX_ cv);
384	}	434	}
385	}	435	}
386	#ifdef CXt_FORMAT
387	else if (CxTYPE(cx) == CXt_FORMAT)
388	{
389	/* I never used formats, so how should I know how these are implemented? */
390	/* my bold guess is as a simple, plain sub... */
391	croak ("CXt_FORMAT not yet handled. Don't switch coroutines from within formats");
392	}
393	#endif
394	}	436	}
395		437
396	if (top_si->si_type == PERLSI_MAIN)	438	if (top_si->si_type == PERLSI_MAIN)
397	break;	439	break;
398		440
399	top_si = top_si->si_prev;	441	top_si = top_si->si_prev;
400	ccstk = top_si->si_cxstack;	442	ccstk = top_si->si_cxstack;
401	cxix = top_si->si_cxix;	443	cxix = top_si->si_cxix;
402	}	444	}
403		445
404	PUTBACK;	446	PUTBACK;
405	}	447	}
406		448
407	c->defav = flags & TRANSFER_SAVE_DEFAV ? (AV *)SvREFCNT_inc (GvAV (PL_defgv)) : 0;	449	c->defav = c->save & CORO_SAVE_DEFAV ? (AV *)SvREFCNT_inc (GvAV (PL_defgv)) : 0;
408	c->defsv = flags & TRANSFER_SAVE_DEFSV ? SvREFCNT_inc (DEFSV) : 0;	450	c->defsv = c->save & CORO_SAVE_DEFSV ? SvREFCNT_inc (DEFSV) : 0;
409	c->errsv = flags & TRANSFER_SAVE_ERRSV ? SvREFCNT_inc (ERRSV) : 0;	451	c->errsv = c->save & CORO_SAVE_ERRSV ? SvREFCNT_inc (ERRSV) : 0;
		452	c->deffh = c->save & CORO_SAVE_DEFFH ? (GV *)SvREFCNT_inc (PL_defoutgv) : 0;
		453	c->irssv = c->save & CORO_SAVE_IRSSV ? SvREFCNT_inc (PL_rs) : 0;
410		454
411	c->dowarn = PL_dowarn;	455	#define VAR(name,type)c->name = PL_ ## name;
412	c->in_eval = PL_in_eval;	456	# include "state.h"
413		457	#undef VAR
414	c->curstackinfo = PL_curstackinfo;
415	c->curstack = PL_curstack;
416	c->mainstack = PL_mainstack;
417	c->stack_sp = PL_stack_sp;
418	c->op = PL_op;
419	c->curpad = PL_curpad;
420	c->comppad = PL_comppad;
421	c->compcv = PL_compcv;
422	c->stack_base = PL_stack_base;
423	c->stack_max = PL_stack_max;
424	c->tmps_stack = PL_tmps_stack;
425	c->tmps_floor = PL_tmps_floor;
426	c->tmps_ix = PL_tmps_ix;
427	c->tmps_max = PL_tmps_max;
428	c->markstack = PL_markstack;
429	c->markstack_ptr = PL_markstack_ptr;
430	c->markstack_max = PL_markstack_max;
431	c->scopestack = PL_scopestack;
432	c->scopestack_ix = PL_scopestack_ix;
433	c->scopestack_max = PL_scopestack_max;
434	c->savestack = PL_savestack;
435	c->savestack_ix = PL_savestack_ix;
436	c->savestack_max = PL_savestack_max;
437	#if !PERL_VERSION_ATLEAST (5,9,0)
438	c->retstack = PL_retstack;
439	c->retstack_ix = PL_retstack_ix;
440	c->retstack_max = PL_retstack_max;
441	#endif
442	c->curpm = PL_curpm;
443	c->curcop = PL_curcop;
444	}	458	}
445		459
446	/*	460	/*
447	* allocate various perl stacks. This is an exact copy	461	* allocate various perl stacks. This is an exact copy
448	* of perl.c:init_stacks, except that it uses less memory	462	* of perl.c:init_stacks, except that it uses less memory
449	* on the (sometimes correct) assumption that coroutines do	463	* on the (sometimes correct) assumption that coroutines do
450	* not usually need a lot of stackspace.	464	* not usually need a lot of stackspace.
451	*/	465	*/
		466	#if CORO_PREFER_PERL_FUNCTIONS
		467	# define coro_init_stacks init_stacks
		468	#else
452	static void	469	static void
453	coro_init_stacks ()	470	coro_init_stacks (pTHX)
454	{	471	{
455	PL_curstackinfo = new_stackinfo(96, 1024/sizeof(PERL_CONTEXT) - 1);	472	PL_curstackinfo = new_stackinfo(64, 6);
456	PL_curstackinfo->si_type = PERLSI_MAIN;	473	PL_curstackinfo->si_type = PERLSI_MAIN;
457	PL_curstack = PL_curstackinfo->si_stack;	474	PL_curstack = PL_curstackinfo->si_stack;
458	PL_mainstack = PL_curstack; /* remember in case we switch stacks */	475	PL_mainstack = PL_curstack; /* remember in case we switch stacks */
459		476
460	PL_stack_base = AvARRAY(PL_curstack);	477	PL_stack_base = AvARRAY(PL_curstack);
461	PL_stack_sp = PL_stack_base;	478	PL_stack_sp = PL_stack_base;
462	PL_stack_max = PL_stack_base + AvMAX(PL_curstack);	479	PL_stack_max = PL_stack_base + AvMAX(PL_curstack);
463		480
464	New(50,PL_tmps_stack,96,SV*);	481	New(50,PL_tmps_stack,64,SV*);
465	PL_tmps_floor = -1;	482	PL_tmps_floor = -1;
466	PL_tmps_ix = -1;	483	PL_tmps_ix = -1;
467	PL_tmps_max = 96;	484	PL_tmps_max = 64;
468		485
469	New(54,PL_markstack,16,I32);	486	New(54,PL_markstack,16,I32);
470	PL_markstack_ptr = PL_markstack;	487	PL_markstack_ptr = PL_markstack;
471	PL_markstack_max = PL_markstack + 16;	488	PL_markstack_max = PL_markstack + 16;
472		489
…		…
476		493
477	New(54,PL_scopestack,16,I32);	494	New(54,PL_scopestack,16,I32);
478	PL_scopestack_ix = 0;	495	PL_scopestack_ix = 0;
479	PL_scopestack_max = 16;	496	PL_scopestack_max = 16;
480		497
481	New(54,PL_savestack,96,ANY);	498	New(54,PL_savestack,64,ANY);
482	PL_savestack_ix = 0;	499	PL_savestack_ix = 0;
483	PL_savestack_max = 96;	500	PL_savestack_max = 64;
484		501
485	#if !PERL_VERSION_ATLEAST (5,9,0)	502	#if !PERL_VERSION_ATLEAST (5,9,0)
486	New(54,PL_retstack,8,OP*);	503	New(54,PL_retstack,4,OP*);
487	PL_retstack_ix = 0;	504	PL_retstack_ix = 0;
488	PL_retstack_max = 8;	505	PL_retstack_max = 4;
489	#endif	506	#endif
490	}	507	}
		508	#endif
491		509
492	/*	510	/*
493	* destroy the stacks, the callchain etc...	511	* destroy the stacks, the callchain etc...
494	*/	512	*/
495	static void	513	static void
496	destroy_stacks()	514	coro_destroy_stacks (pTHX)
497	{	515	{
498	if (!IN_DESTRUCT)	516	if (!IN_DESTRUCT)
499	{	517	{
500	/* is this ugly, I ask? */	518	/* restore all saved variables and stuff */
501	LEAVE_SCOPE (0);	519	LEAVE_SCOPE (0);
		520	assert (PL_tmps_floor == -1);
502		521
503	/* sure it is, but more important: is it correct?? :/ */	522	/* free all temporaries */
504	FREETMPS;	523	FREETMPS;
		524	assert (PL_tmps_ix == -1);
505		525
		526	/* unwind all extra stacks */
506	/POPSTACK_TO (PL_mainstack);//D//use/	527	POPSTACK_TO (PL_mainstack);
		528
		529	/* unwind main stack */
		530	dounwind (-1);
507	}	531	}
508		532
509	while (PL_curstackinfo->si_next)	533	while (PL_curstackinfo->si_next)
510	PL_curstackinfo = PL_curstackinfo->si_next;	534	PL_curstackinfo = PL_curstackinfo->si_next;
511		535
512	while (PL_curstackinfo)	536	while (PL_curstackinfo)
513	{	537	{
514	PERL_SI *p = PL_curstackinfo->si_prev;	538	PERL_SI *p = PL_curstackinfo->si_prev;
515		539
516	{ /D//remove/
517	dSP;
518	SWITCHSTACK (PL_curstack, PL_curstackinfo->si_stack);
519	PUTBACK; /* possibly superfluous */
520	}
521
522	if (!IN_DESTRUCT)	540	if (!IN_DESTRUCT)
523	{
524	dounwind (-1);/D//remove/
525	SvREFCNT_dec (PL_curstackinfo->si_stack);	541	SvREFCNT_dec (PL_curstackinfo->si_stack);
526	}
527		542
528	Safefree (PL_curstackinfo->si_cxstack);	543	Safefree (PL_curstackinfo->si_cxstack);
529	Safefree (PL_curstackinfo);	544	Safefree (PL_curstackinfo);
530	PL_curstackinfo = p;	545	PL_curstackinfo = p;
531	}	546	}
…		…
537	#if !PERL_VERSION_ATLEAST (5,9,0)	552	#if !PERL_VERSION_ATLEAST (5,9,0)
538	Safefree (PL_retstack);	553	Safefree (PL_retstack);
539	#endif	554	#endif
540	}	555	}
541		556
		557	static size_t
		558	coro_rss (struct coro *coro)
		559	{
		560	size_t rss = sizeof (coro);
		561
		562	if (coro->mainstack)
		563	{
		564	if (coro->flags & CF_RUNNING)
		565	{
		566	#define VAR(name,type)coro->name = PL_ ## name;
		567	# include "state.h"
		568	#undef VAR
		569	}
		570
		571	rss += sizeof (coro->curstackinfo);
		572	rss += sizeof (struct xpvav) + (1 + AvFILL (coro->curstackinfo->si_stack)) * sizeof (SV *);
		573	rss += (coro->curstackinfo->si_cxmax + 1) * sizeof (PERL_CONTEXT);
		574	rss += sizeof (struct xpvav) + (1 + AvFILL (coro->curstack)) * sizeof (SV *);
		575	rss += coro->tmps_max * sizeof (SV *);
		576	rss += (coro->markstack_max - coro->markstack_ptr) * sizeof (I32);
		577	rss += coro->scopestack_max * sizeof (I32);
		578	rss += coro->savestack_max * sizeof (ANY);
		579
		580	#if !PERL_VERSION_ATLEAST (5,9,0)
		581	rss += coro->retstack_max * sizeof (OP *);
		582	#endif
		583	}
		584
		585	return rss;
		586	}
		587
		588	/ coroutine stack handling **********************************************/
		589
542	static void	590	static void
543	setup_coro (struct coro *coro)	591	setup_coro (pTHX_ struct coro *coro)
544	{	592	{
545	/*	593	/*
546	* emulate part of the perl startup here.	594	* emulate part of the perl startup here.
547	*/	595	*/
548	dTHX;	596	coro_init_stacks (aTHX);
		597
		598	PL_curcop = &PL_compiling;
		599	PL_in_eval = EVAL_NULL;
		600	PL_comppad = 0;
		601	PL_curpm = 0;
		602	PL_localizing = 0;
		603	PL_dirty = 0;
		604	PL_restartop = 0;
		605
		606	{
		607	dSP;
		608	LOGOP myop;
		609
		610	SvREFCNT_dec (GvAV (PL_defgv));
		611	GvAV (PL_defgv) = coro->args; coro->args = 0;
		612
		613	Zero (&myop, 1, LOGOP);
		614	myop.op_next = Nullop;
		615	myop.op_flags = OPf_WANT_VOID;
		616
		617	PUSHMARK (SP);
		618	XPUSHs (av_shift (GvAV (PL_defgv)));
		619	PUTBACK;
		620	PL_op = (OP *)&myop;
		621	PL_op = PL_ppaddr[OP_ENTERSUB](aTHX);
		622	SPAGAIN;
		623	}
		624
		625	ENTER; /* necessary e.g. for dounwind */
		626	}
		627
		628	static void
		629	free_coro_mortal (pTHX)
		630	{
		631	if (coro_mortal)
		632	{
		633	SvREFCNT_dec (coro_mortal);
		634	coro_mortal = 0;
		635	}
		636	}
		637
		638	static int
		639	runops_coro (pTHX)
		640	{
		641	COP *oldcop = 0;
		642	int oldcxix = -2;
		643
		644	while ((PL_op = CALL_FPTR (PL_op->op_ppaddr) (aTHX)))
		645	{
		646	PERL_ASYNC_CHECK ();
		647
		648	if (PL_op->op_type == OP_LEAVESUB)
		649	{
		650	PERL_CONTEXT *cx = &cxstack[cxstack_ix];
		651	SV bot, top;
		652	AV av = newAV (); / return values */
		653	runops_proc_t old_runops = PL_runops;
		654	dSP;
		655	ENTER;
		656	SAVETMPS;
		657	EXTEND (SP, 3);
		658	PL_runops = RUNOPS_DEFAULT;
		659
		660	GV *gv = CvGV (cx->blk_sub.cv);
		661	SV *fullname = sv_2mortal (newSV (0));
		662	if (isGV (gv))
		663	gv_efullname3 (fullname, gv, 0);
		664
		665	bot = PL_stack_base + cx->blk_oldsp + 1;
		666	top = cx->blk_gimme == G_ARRAY ? SP + 1
		667	: cx->blk_gimme == G_SCALAR ? bot + 1
		668	: bot;
		669
		670	while (bot < top)
		671	av_push (av, SvREFCNT_inc (*bot++));
		672
		673	PUSHMARK (SP);
		674	PUSHs (&PL_sv_no);
		675	PUSHs (fullname);
		676	PUSHs (sv_2mortal (newRV_noinc ((SV *)av)));
		677	PUTBACK;
		678	call_pv ("Coro::_do_trace_sub", G_KEEPERR \| G_EVAL \| G_VOID \| G_DISCARD);
		679	SPAGAIN;
		680
		681	FREETMPS;
		682	LEAVE;
		683	PL_runops = old_runops;
		684	}
		685
		686	if (oldcop != PL_curcop)
		687	{
		688	oldcop = PL_curcop;
		689
		690	if (PL_curcop != &PL_compiling)
		691	{
		692	runops_proc_t old_runops = PL_runops;
		693	dSP;
		694	ENTER;
		695	SAVETMPS;
		696	EXTEND (SP, 3);
		697	PL_runops = RUNOPS_DEFAULT;
		698
		699	if (oldcxix != cxstack_ix)
		700	{
		701	PERL_CONTEXT *cx = &cxstack[cxstack_ix];
		702
		703	if (CxTYPE (cx) == CXt_SUB && oldcxix < cxstack_ix)
		704	{
		705	GV *gv = CvGV (cx->blk_sub.cv);
		706	SV *fullname = sv_2mortal (newSV (0));
		707	if (isGV (gv))
		708	gv_efullname3 (fullname, gv, 0);
		709
		710	PUSHMARK (SP);
		711	PUSHs (&PL_sv_yes);
		712	PUSHs (fullname);
		713	PUSHs (cx->blk_sub.hasargs ? sv_2mortal (newRV_inc ((SV *)cx->blk_sub.argarray)) : &PL_sv_undef);
		714	PUTBACK;
		715	call_pv ("Coro::_do_trace_sub", G_KEEPERR \| G_EVAL \| G_VOID \| G_DISCARD);
		716	SPAGAIN;
		717	}
		718
		719	oldcxix = cxstack_ix;
		720	}
		721
		722	if (0) {
		723	PUSHMARK (SP);
		724	PUSHs (sv_2mortal (newSVpv (OutCopFILE (oldcop), 0)));
		725	PUSHs (sv_2mortal (newSViv (CopLINE (oldcop))));
		726	PUTBACK;
		727	call_pv ("Coro::_do_trace_line", G_KEEPERR \| G_EVAL \| G_VOID \| G_DISCARD);
		728	SPAGAIN;
		729	}
		730
		731	FREETMPS;
		732	LEAVE;
		733	PL_runops = old_runops;
		734	}
		735	}
		736	}
		737
		738	TAINT_NOT;
		739	return 0;
		740	}
		741
		742	/* inject a fake call to Coro::State::_cctx_init into the execution */
		743	/* _cctx_init should be careful, as it could be called at almost any time */
		744	/* during execution of a perl program */
		745	static void NOINLINE
		746	prepare_cctx (pTHX_ coro_cctx *cctx)
		747	{
549	dSP;	748	dSP;
550	UNOP myop;	749	LOGOP myop;
551	SV sub_init = (SV )get_cv ("Coro::State::coro_init", FALSE);
552		750
553	coro_init_stacks ();	751	PL_top_env = &PL_start_env;
554	/PL_curcop = 0;/
555	/PL_in_eval = PL_in_eval;/ /* inherit */
556	SvREFCNT_dec (GvAV (PL_defgv));
557	GvAV (PL_defgv) = coro->args; coro->args = 0;
558		752
559	SPAGAIN;	753	if (cctx->flags & CC_TRACE)
		754	PL_runops = runops_coro;
560		755
561	Zero (&myop, 1, UNOP);	756	Zero (&myop, 1, LOGOP);
562	myop.op_next = Nullop;	757	myop.op_next = PL_op;
563	myop.op_flags = OPf_WANT_VOID;	758	myop.op_flags = OPf_WANT_VOID \| OPf_STACKED;
564		759
		760	PUSHMARK (SP);
		761	EXTEND (SP, 2);
		762	PUSHs (sv_2mortal (newSViv (PTR2IV (cctx))));
		763	PUSHs ((SV *)get_cv ("Coro::State::_cctx_init", FALSE));
		764	PUTBACK;
565	PL_op = (OP *)&myop;	765	PL_op = (OP *)&myop;
566
567	PUSHMARK(SP);
568	XPUSHs (sub_init);
569	PUTBACK;
570	PL_op = PL_ppaddr[OP_ENTERSUB](aTHX);	766	PL_op = PL_ppaddr[OP_ENTERSUB](aTHX);
571	SPAGAIN;	767	SPAGAIN;
572
573	ENTER; /* necessary e.g. for dounwind */
574	}	768	}
575		769
576	static void	770	/*
577	free_coro_mortal ()	771	* this is a _very_ stripped down perl interpreter ;)
578	{	772	*/
579	if (coro_mortal)
580	{
581	SvREFCNT_dec (coro_mortal);
582	coro_mortal = 0;
583	}
584	}
585
586	static void NOINLINE
587	prepare_cctx (coro_stack *cctx)
588	{
589	dSP;
590	UNOP myop;
591
592	Zero (&myop, 1, UNOP);
593	myop.op_next = PL_op;
594	myop.op_flags = OPf_WANT_VOID \| OPf_STACKED;
595
596	PUSHMARK(SP);
597	EXTEND (SP, 2);
598	PUSHs (newSViv (PTR2IV (cctx)));
599	PUSHs ((SV *)get_cv ("Coro::State::cctx_init", FALSE));
600	PUTBACK;
601	PL_restartop = PL_ppaddr[OP_ENTERSUB](aTHX);
602	SPAGAIN;
603	}
604
605	static void	773	static void
606	coro_run (void *arg)	774	coro_run (void *arg)
607	{	775	{
		776	dTHX;
		777
		778	/* coro_run is the alternative tail of transfer(), so unlock here. */
		779	UNLOCK;
		780
		781	/* we now skip the entersub that lead to transfer() */
		782	PL_op = PL_op->op_next;
		783
		784	/* inject a fake subroutine call to cctx_init */
		785	prepare_cctx (aTHX_ (coro_cctx *)arg);
		786
		787	/* somebody or something will hit me for both perl_run and PL_restartop */
		788	PL_restartop = PL_op;
		789	perl_run (PL_curinterp);
		790
608	/*	791	/*
609	* this is a _very_ stripped down perl interpreter ;)	792	* If perl-run returns we assume exit() was being called or the coro
		793	* fell off the end, which seems to be the only valid (non-bug)
		794	* reason for perl_run to return. We try to exit by jumping to the
		795	* bootstrap-time "top" top_env, as we cannot restore the "main"
		796	* coroutine as Coro has no such concept
610	*/	797	*/
611	UNLOCK;
612
613	PL_top_env = &PL_start_env;	798	PL_top_env = main_top_env;
614	prepare_cctx ((coro_stack *)arg);	799	JMPENV_JUMP (2); /* I do not feel well about the hardcoded 2 at all */
615
616	/* somebody will hit me for both perl_run and PL_restartop */
617	perl_run (PERL_GET_CONTEXT);
618
619	fputs ("FATAL: C coroutine fell over the edge of the world, aborting.\n", stderr);
620	abort ();
621	}	800	}
622		801
623	static coro_stack *	802	static coro_cctx *
624	stack_new ()	803	cctx_new ()
625	{	804	{
626	coro_stack *stack;	805	coro_cctx *cctx;
		806	void *stack_start;
		807	size_t stack_size;
627		808
		809	++cctx_count;
		810
628	New (0, stack, 1, coro_stack);	811	Newz (0, cctx, 1, coro_cctx);
629		812
630	#if HAVE_MMAP	813	#if HAVE_MMAP
631		814
632	stack->ssize = ((STACKSIZE * sizeof (long) + PAGESIZE - 1) / PAGESIZE + STACKGUARD) * PAGESIZE;	815	cctx->ssize = ((coro_stacksize * sizeof (long) + PAGESIZE - 1) / PAGESIZE + CORO_STACKGUARD) * PAGESIZE;
633	/* mmap suppsedly does allocate-on-write for us */	816	/* mmap supposedly does allocate-on-write for us */
634	stack->sptr = mmap (0, stack->ssize, PROT_EXEC\|PROT_READ\|PROT_WRITE, MAP_PRIVATE\|MAP_ANONYMOUS, 0, 0);	817	cctx->sptr = mmap (0, cctx->ssize, PROT_EXEC\|PROT_READ\|PROT_WRITE, MAP_PRIVATE\|MAP_ANONYMOUS, 0, 0);
635		818
636	if (stack->sptr == (void *)-1)	819	if (cctx->sptr != (void *)-1)
637	{
638	perror ("FATAL: unable to mmap stack for coroutine");
639	_exit (EXIT_FAILURE);
640	}	820	{
641
642	# if STACKGUARD	821	# if CORO_STACKGUARD
643	mprotect (stack->sptr, STACKGUARD * PAGESIZE, PROT_NONE);	822	mprotect (cctx->sptr, CORO_STACKGUARD * PAGESIZE, PROT_NONE);
644	# endif	823	# endif
645		824	stack_start = CORO_STACKGUARD * PAGESIZE + (char *)cctx->sptr;
646	#else	825	stack_size = cctx->ssize - CORO_STACKGUARD * PAGESIZE;
647		826	cctx->flags \|= CC_MAPPED;
648	stack->ssize = STACKSIZE * (long)sizeof (long);
649	New (0, stack->sptr, STACKSIZE, long);
650
651	if (!stack->sptr)
652	{	827	}
		828	else
		829	#endif
		830	{
		831	cctx->ssize = coro_stacksize * (long)sizeof (long);
		832	New (0, cctx->sptr, coro_stacksize, long);
		833
		834	if (!cctx->sptr)
		835	{
653	perror (stderr, "FATAL: unable to malloc stack for coroutine");	836	perror ("FATAL: unable to allocate stack for coroutine");
654	_exit (EXIT_FAILURE);	837	_exit (EXIT_FAILURE);
655	}	838	}
656		839
657	#endif	840	stack_start = cctx->sptr;
		841	stack_size = cctx->ssize;
		842	}
658		843
		844	REGISTER_STACK (cctx, (char )stack_start, (char )stack_start + stack_size);
659	coro_create (&stack->cctx, coro_run, (void *)stack, stack->sptr, stack->ssize);	845	coro_create (&cctx->cctx, coro_run, (void *)cctx, stack_start, stack_size);
660		846
661	return stack;	847	return cctx;
662	}	848	}
663		849
664	static void	850	static void
665	stack_free (coro_stack *stack)	851	cctx_destroy (coro_cctx *cctx)
666	{	852	{
667	if (!stack)	853	if (!cctx)
668	return;	854	return;
669		855
		856	--cctx_count;
		857
		858	#if CORO_USE_VALGRIND
		859	VALGRIND_STACK_DEREGISTER (cctx->valgrind_id);
		860	#endif
		861
670	#if HAVE_MMAP	862	#if HAVE_MMAP
		863	if (cctx->flags & CC_MAPPED)
671	munmap (stack->sptr, stack->ssize);	864	munmap (cctx->sptr, cctx->ssize);
672	#else
673	Safefree (stack->sptr);
674	#endif
675
676	Safefree (stack);
677	}
678
679	static coro_stack *stack_first;
680
681	static coro_stack *
682	stack_get ()
683	{
684	coro_stack *stack;
685
686	if (stack_first)
687	{
688	stack = stack_first;
689	stack_first = stack->next;
690	}
691	else	865	else
		866	#endif
		867	Safefree (cctx->sptr);
		868
		869	Safefree (cctx);
		870	}
		871
		872	static coro_cctx *
		873	cctx_get (pTHX)
		874	{
		875	while (cctx_first)
692	{	876	{
693	stack = stack_new ();	877	coro_cctx *cctx = cctx_first;
694	PL_op = PL_op->op_next;	878	cctx_first = cctx->next;
		879	--cctx_idle;
		880
		881	if (cctx->ssize >= coro_stacksize && !(cctx->flags & CC_NOREUSE))
		882	return cctx;
		883
		884	cctx_destroy (cctx);
695	}	885	}
696		886
697	return stack;	887	return cctx_new ();
698	}	888	}
699		889
700	static void	890	static void
701	stack_put (coro_stack *stack)	891	cctx_put (coro_cctx *cctx)
702	{	892	{
703	stack->next = stack_first;	893	/* free another cctx if overlimit */
704	stack_first = stack;	894	if (cctx_idle >= MAX_IDLE_CCTX)
		895	{
		896	coro_cctx *first = cctx_first;
		897	cctx_first = first->next;
		898	--cctx_idle;
		899
		900	cctx_destroy (first);
		901	}
		902
		903	++cctx_idle;
		904	cctx->next = cctx_first;
		905	cctx_first = cctx;
705	}	906	}
		907
		908	/ coroutine switching ***************************************************/
706		909
707	/* never call directly, always through the coro_state_transfer global variable */	910	/* never call directly, always through the coro_state_transfer global variable */
708	static void NOINLINE	911	static void NOINLINE
709	transfer (struct coro prev, struct coro next, int flags)	912	transfer (pTHX_ struct coro prev, struct coro next)
710	{	913	{
711	dSTACKLEVEL;	914	dSTACKLEVEL;
712		915
713	/* sometimes transfer is only called to set idle_sp */	916	/* sometimes transfer is only called to set idle_sp */
714	if (flags == TRANSFER_SET_STACKLEVEL)	917	if (!next)
		918	{
715	((coro_stack *)prev)->idle_sp = STACKLEVEL;	919	((coro_cctx *)prev)->idle_sp = STACKLEVEL;
		920	assert (((coro_cctx )prev)->idle_te = PL_top_env); / just for the side-effect when asserts are enabled */
		921	}
716	else if (prev != next)	922	else if (prev != next)
717	{	923	{
718	coro_stack *prev__stack;	924	coro_cctx *prev__cctx;
		925
		926	if (prev->flags & CF_NEW)
		927	{
		928	/* create a new empty context */
		929	Newz (0, prev->cctx, 1, coro_cctx);
		930	prev->flags &= ~CF_NEW;
		931	prev->flags \|= CF_RUNNING;
		932	}
		933
		934	/TODO: must not croak here /
		935	if (!prev->flags & CF_RUNNING)
		936	croak ("Coro::State::transfer called with non-running prev Coro::State, but can only transfer from running states");
		937
		938	if (next->flags & CF_RUNNING)
		939	croak ("Coro::State::transfer called with running next Coro::State, but can only transfer to inactive states");
		940
		941	if (next->flags & CF_DESTROYED)
		942	croak ("Coro::State::transfer called with destroyed next Coro::State, but can only transfer to inactive states");
		943
		944	prev->flags &= ~CF_RUNNING;
		945	next->flags \|= CF_RUNNING;
719		946
720	LOCK;	947	LOCK;
721		948
722	if (next->mainstack)	949	if (next->flags & CF_NEW)
723	{	950	{
724	/* coroutine already started */	951	/* need to start coroutine */
725	SAVE (prev, flags);	952	next->flags &= ~CF_NEW;
726	LOAD (next);	953	/* first get rid of the old state */
		954	save_perl (aTHX_ prev);
		955	/* setup coroutine call */
		956	setup_coro (aTHX_ next);
727	}	957	}
728	else	958	else
729	{	959	{
730	/* need to start coroutine */	960	/* coroutine already started */
731	/* first get rid of the old state */	961	save_perl (aTHX_ prev);
732	SAVE (prev, -1);	962	load_perl (aTHX_ next);
733	/* setup coroutine call */
734	setup_coro (next);
735	/* need a stack */
736	next->stack = 0;
737	}	963	}
738		964
739	if (!prev->stack)
740	/* create a new empty context */
741	Newz (0, prev->stack, 1, coro_stack);
742
743	prev__stack = prev->stack;	965	prev__cctx = prev->cctx;
744		966
745	/* possibly "free" the stack */	967	/* possibly "free" the cctx */
746	if (prev__stack->idle_sp == STACKLEVEL)	968	if (prev__cctx->idle_sp == STACKLEVEL)
747	{	969	{
748	stack_put (prev__stack);	970	/* I assume that STACKLEVEL is a stronger indicator than PL_top_env changes */
		971	assert (("ERROR: current top_env must equal previous top_env", PL_top_env == prev__cctx->idle_te));
		972
749	prev->stack = 0;	973	prev->cctx = 0;
		974
		975	cctx_put (prev__cctx);
750	}	976	}
751		977
752	if (!next->stack)	978	if (!next->cctx)
753	next->stack = stack_get ();	979	next->cctx = cctx_get (aTHX);
754		980
755	if (prev__stack != next->stack)	981	if (prev__cctx != next->cctx)
756	{	982	{
757	prev__stack->top_env = PL_top_env;	983	prev__cctx->top_env = PL_top_env;
758	PL_top_env = next->stack->top_env;	984	PL_top_env = next->cctx->top_env;
759	coro_transfer (&prev__stack->cctx, &next->stack->cctx);	985	coro_transfer (&prev__cctx->cctx, &next->cctx->cctx);
760	}	986	}
761		987
762	free_coro_mortal ();	988	free_coro_mortal (aTHX);
763
764	UNLOCK;	989	UNLOCK;
765	}	990	}
766	}	991	}
767		992
768	struct transfer_args	993	struct transfer_args
769	{	994	{
770	struct coro prev, next;	995	struct coro prev, next;
771	int flags;
772	};	996	};
773		997
774	#define TRANSFER(ta) transfer ((ta).prev, (ta).next, (ta).flags)	998	#define TRANSFER(ta) transfer (aTHX_ (ta).prev, (ta).next)
775		999
		1000	/ high level stuff ******************************************************/
		1001
776	static void	1002	static int
777	coro_state_destroy (struct coro *coro)	1003	coro_state_destroy (pTHX_ struct coro *coro)
778	{	1004	{
779	if (coro->refcnt--)	1005	if (coro->flags & CF_DESTROYED)
780	return;	1006	return 0;
		1007
		1008	coro->flags \|= CF_DESTROYED;
		1009
		1010	if (coro->flags & CF_READY)
		1011	{
		1012	/* reduce nready, as destroying a ready coro effectively unreadies it */
		1013	/* alternative: look through all ready queues and remove the coro */
		1014	LOCK;
		1015	--coro_nready;
		1016	UNLOCK;
		1017	}
		1018	else
		1019	coro->flags \|= CF_READY; /* make sure it is NOT put into the readyqueue */
781		1020
782	if (coro->mainstack && coro->mainstack != main_mainstack)	1021	if (coro->mainstack && coro->mainstack != main_mainstack)
783	{	1022	{
784	struct coro temp;	1023	struct coro temp;
785		1024
786	SAVE ((&temp), TRANSFER_SAVE_ALL);	1025	assert (!(coro->flags & CF_RUNNING));
787	LOAD (coro);
788		1026
		1027	Zero (&temp, 1, struct coro);
		1028	temp.save = CORO_SAVE_ALL;
		1029
		1030	if (coro->flags & CF_RUNNING)
		1031	croak ("FATAL: tried to destroy currently running coroutine");
		1032
		1033	save_perl (aTHX_ &temp);
		1034	load_perl (aTHX_ coro);
		1035
789	destroy_stacks ();	1036	coro_destroy_stacks (aTHX);
790		1037
791	LOAD ((&temp)); /* this will get rid of defsv etc.. */	1038	load_perl (aTHX_ &temp); /* this will get rid of defsv etc.. */
792		1039
793	coro->mainstack = 0;	1040	coro->mainstack = 0;
794	}	1041	}
795		1042
796	stack_free (coro->stack);	1043	cctx_destroy (coro->cctx);
797	SvREFCNT_dec (coro->args);	1044	SvREFCNT_dec (coro->args);
798	Safefree (coro);	1045
		1046	if (coro->next) coro->next->prev = coro->prev;
		1047	if (coro->prev) coro->prev->next = coro->next;
		1048	if (coro == coro_first) coro_first = coro->next;
		1049
		1050	return 1;
799	}	1051	}
800		1052
801	static int	1053	static int
802	coro_state_clear (pTHX_ SV sv, MAGIC mg)	1054	coro_state_free (pTHX_ SV sv, MAGIC mg)
803	{	1055	{
804	struct coro coro = (struct coro )mg->mg_ptr;	1056	struct coro coro = (struct coro )mg->mg_ptr;
805	mg->mg_ptr = 0;	1057	mg->mg_ptr = 0;
806		1058
		1059	coro->hv = 0;
		1060
		1061	if (--coro->refcnt < 0)
		1062	{
807	coro_state_destroy (coro);	1063	coro_state_destroy (aTHX_ coro);
		1064	Safefree (coro);
		1065	}
808		1066
809	return 0;	1067	return 0;
810	}	1068	}
811		1069
812	static int	1070	static int
…		…
819	return 0;	1077	return 0;
820	}	1078	}
821		1079
822	static MGVTBL coro_state_vtbl = {	1080	static MGVTBL coro_state_vtbl = {
823	0, 0, 0, 0,	1081	0, 0, 0, 0,
824	coro_state_clear,	1082	coro_state_free,
825	0,	1083	0,
826	#ifdef MGf_DUP	1084	#ifdef MGf_DUP
827	coro_state_dup,	1085	coro_state_dup,
		1086	#else
		1087	# define MGf_DUP 0
828	#endif	1088	#endif
829	};	1089	};
830		1090
831	static struct coro *	1091	static struct coro *
832	SvSTATE (SV *coro)	1092	SvSTATE_ (pTHX_ SV *coro)
833	{	1093	{
834	HV *stash;	1094	HV *stash;
835	MAGIC *mg;	1095	MAGIC *mg;
836		1096
837	if (SvROK (coro))	1097	if (SvROK (coro))
…		…
843	/* very slow, but rare, check */	1103	/* very slow, but rare, check */
844	if (!sv_derived_from (sv_2mortal (newRV_inc (coro)), "Coro::State"))	1104	if (!sv_derived_from (sv_2mortal (newRV_inc (coro)), "Coro::State"))
845	croak ("Coro::State object required");	1105	croak ("Coro::State object required");
846	}	1106	}
847		1107
848	mg = SvMAGIC (coro);	1108	mg = CORO_MAGIC (coro);
849	assert (mg->mg_type == PERL_MAGIC_ext);
850	return (struct coro *)mg->mg_ptr;	1109	return (struct coro *)mg->mg_ptr;
851	}	1110	}
852		1111
		1112	#define SvSTATE(sv) SvSTATE_ (aTHX_ (sv))
		1113
853	static void	1114	static void
854	prepare_transfer (struct transfer_args ta, SV prev, SV *next, int flags)	1115	prepare_transfer (pTHX_ struct transfer_args ta, SV prev_sv, SV *next_sv)
855	{	1116	{
856	ta->prev = SvSTATE (prev);	1117	ta->prev = SvSTATE (prev_sv);
857	ta->next = SvSTATE (next);	1118	ta->next = SvSTATE (next_sv);
858	ta->flags = flags;
859	}	1119	}
860		1120
861	static void	1121	static void
862	api_transfer (SV prev, SV next, int flags)	1122	api_transfer (SV prev_sv, SV next_sv)
863	{	1123	{
864	dTHX;	1124	dTHX;
865	struct transfer_args ta;	1125	struct transfer_args ta;
866		1126
867	prepare_transfer (&ta, prev, next, flags);	1127	prepare_transfer (aTHX_ &ta, prev_sv, next_sv);
868	TRANSFER (ta);	1128	TRANSFER (ta);
869	}	1129	}
870		1130
		1131	static int
		1132	api_save (SV *coro_sv, int new_save)
		1133	{
		1134	dTHX;
		1135	struct coro *coro = SvSTATE (coro_sv);
		1136	int old_save = coro->save;
		1137
		1138	if (new_save >= 0)
		1139	coro->save = new_save;
		1140
		1141	return old_save;
		1142	}
		1143
871	/ Coro ******************************************************************/	1144	/ Coro ******************************************************************/
872		1145
873	#define PRIO_MAX 3
874	#define PRIO_HIGH 1
875	#define PRIO_NORMAL 0
876	#define PRIO_LOW -1
877	#define PRIO_IDLE -3
878	#define PRIO_MIN -4
879
880	/* for Coro.pm */
881	static GV coro_current, coro_idle;
882	static AV *coro_ready [PRIO_MAX-PRIO_MIN+1];
883	static int coro_nready;
884
885	static void	1146	static void
886	coro_enq (SV *sv)	1147	coro_enq (pTHX_ SV *coro_sv)
887	{	1148	{
888	int prio;
889
890	if (SvTYPE (sv) != SVt_PVHV)
891	croak ("Coro::ready tried to enqueue something that is not a coroutine");
892
893	prio = SvSTATE (sv)->prio;
894
895	av_push (coro_ready [prio - PRIO_MIN], sv);	1149	av_push (coro_ready [SvSTATE (coro_sv)->prio - PRIO_MIN], coro_sv);
896	coro_nready++;
897	}	1150	}
898		1151
899	static SV *	1152	static SV *
900	coro_deq (int min_prio)	1153	coro_deq (pTHX_ int min_prio)
901	{	1154	{
902	int prio = PRIO_MAX - PRIO_MIN;	1155	int prio = PRIO_MAX - PRIO_MIN;
903		1156
904	min_prio -= PRIO_MIN;	1157	min_prio -= PRIO_MIN;
905	if (min_prio < 0)	1158	if (min_prio < 0)
906	min_prio = 0;	1159	min_prio = 0;
907		1160
908	for (prio = PRIO_MAX - PRIO_MIN + 1; --prio >= min_prio; )	1161	for (prio = PRIO_MAX - PRIO_MIN + 1; --prio >= min_prio; )
909	if (AvFILLp (coro_ready [prio]) >= 0)	1162	if (AvFILLp (coro_ready [prio]) >= 0)
910	{
911	coro_nready--;
912	return av_shift (coro_ready [prio]);	1163	return av_shift (coro_ready [prio]);
913	}
914		1164
915	return 0;	1165	return 0;
916	}	1166	}
917		1167
		1168	static int
		1169	api_ready (SV *coro_sv)
		1170	{
		1171	dTHX;
		1172	struct coro *coro;
		1173
		1174	if (SvROK (coro_sv))
		1175	coro_sv = SvRV (coro_sv);
		1176
		1177	coro = SvSTATE (coro_sv);
		1178
		1179	if (coro->flags & CF_READY)
		1180	return 0;
		1181
		1182	coro->flags \|= CF_READY;
		1183
		1184	LOCK;
		1185	coro_enq (aTHX_ SvREFCNT_inc (coro_sv));
		1186	++coro_nready;
		1187	UNLOCK;
		1188
		1189	return 1;
		1190	}
		1191
		1192	static int
		1193	api_is_ready (SV *coro_sv)
		1194	{
		1195	dTHX;
		1196	return !!(SvSTATE (coro_sv)->flags & CF_READY);
		1197	}
		1198
918	static void	1199	static void
919	api_ready (SV *coro)	1200	prepare_schedule (pTHX_ struct transfer_args *ta)
920	{	1201	{
921	dTHX;	1202	SV prev_sv, next_sv;
922		1203
923	if (SvROK (coro))	1204	for (;;)
924	coro = SvRV (coro);	1205	{
		1206	LOCK;
		1207	next_sv = coro_deq (aTHX_ PRIO_MIN);
		1208
		1209	/* nothing to schedule: call the idle handler */
		1210	if (!next_sv)
		1211	{
		1212	dSP;
		1213	UNLOCK;
		1214
		1215	ENTER;
		1216	SAVETMPS;
		1217
		1218	PUSHMARK (SP);
		1219	PUTBACK;
		1220	call_sv (get_sv ("Coro::idle", FALSE), G_DISCARD);
		1221
		1222	FREETMPS;
		1223	LEAVE;
		1224	continue;
		1225	}
		1226
		1227	ta->next = SvSTATE (next_sv);
		1228
		1229	/* cannot transfer to destroyed coros, skip and look for next */
		1230	if (ta->next->flags & CF_DESTROYED)
		1231	{
		1232	UNLOCK;
		1233	SvREFCNT_dec (next_sv);
		1234	/* coro_nready is already taken care of by destroy */
		1235	continue;
		1236	}
		1237
		1238	--coro_nready;
		1239	UNLOCK;
		1240	break;
		1241	}
		1242
		1243	/* free this only after the transfer */
		1244	prev_sv = SvRV (coro_current);
		1245	SvRV_set (coro_current, next_sv);
		1246	ta->prev = SvSTATE (prev_sv);
		1247
		1248	assert (ta->next->flags & CF_READY);
		1249	ta->next->flags &= ~CF_READY;
925		1250
926	LOCK;	1251	LOCK;
927	coro_enq (SvREFCNT_inc (coro));	1252	free_coro_mortal (aTHX);
		1253	coro_mortal = prev_sv;
928	UNLOCK;	1254	UNLOCK;
929	}	1255	}
930		1256
931	static void	1257	static void
932	prepare_schedule (struct transfer_args *ta)
933	{
934	SV current, prev, *next;
935
936	current = GvSV (coro_current);
937
938	for (;;)
939	{
940	LOCK;
941	next = coro_deq (PRIO_MIN);
942	UNLOCK;
943
944	if (next)
945	break;
946
947	{
948	dSP;
949
950	ENTER;
951	SAVETMPS;
952
953	PUSHMARK (SP);
954	PUTBACK;
955	call_sv (GvSV (coro_idle), G_DISCARD);
956
957	FREETMPS;
958	LEAVE;
959	}
960	}
961
962	prev = SvRV (current);
963	SvRV (current) = next;
964
965	/* free this only after the transfer */
966	LOCK;
967	free_coro_mortal ();
968	UNLOCK;
969	coro_mortal = prev;
970
971	ta->prev = SvSTATE (prev);
972	ta->next = SvSTATE (next);
973	ta->flags = TRANSFER_SAVE_ALL;
974	}
975
976	static void
977	prepare_cede (struct transfer_args *ta)	1258	prepare_cede (pTHX_ struct transfer_args *ta)
978	{	1259	{
979	LOCK;	1260	api_ready (coro_current);
980	coro_enq (SvREFCNT_inc (SvRV (GvSV (coro_current))));
981	UNLOCK;
982
983	prepare_schedule (ta);	1261	prepare_schedule (aTHX_ ta);
		1262	}
		1263
		1264	static int
		1265	prepare_cede_notself (pTHX_ struct transfer_args *ta)
		1266	{
		1267	if (coro_nready)
		1268	{
		1269	SV *prev = SvRV (coro_current);
		1270	prepare_schedule (aTHX_ ta);
		1271	api_ready (prev);
		1272	return 1;
		1273	}
		1274	else
		1275	return 0;
984	}	1276	}
985		1277
986	static void	1278	static void
987	api_schedule (void)	1279	api_schedule (void)
988	{	1280	{
989	dTHX;	1281	dTHX;
990	struct transfer_args ta;	1282	struct transfer_args ta;
991		1283
992	prepare_schedule (&ta);	1284	prepare_schedule (aTHX_ &ta);
993	TRANSFER (ta);	1285	TRANSFER (ta);
994	}	1286	}
995		1287
996	static void	1288	static int
997	api_cede (void)	1289	api_cede (void)
998	{	1290	{
999	dTHX;	1291	dTHX;
1000	struct transfer_args ta;	1292	struct transfer_args ta;
1001		1293
1002	prepare_cede (&ta);	1294	prepare_cede (aTHX_ &ta);
		1295
		1296	if (ta.prev != ta.next)
		1297	{
1003	TRANSFER (ta);	1298	TRANSFER (ta);
		1299	return 1;
		1300	}
		1301	else
		1302	return 0;
		1303	}
		1304
		1305	static int
		1306	api_cede_notself (void)
		1307	{
		1308	dTHX;
		1309	struct transfer_args ta;
		1310
		1311	if (prepare_cede_notself (aTHX_ &ta))
		1312	{
		1313	TRANSFER (ta);
		1314	return 1;
		1315	}
		1316	else
		1317	return 0;
1004	}	1318	}
1005		1319
1006	MODULE = Coro::State PACKAGE = Coro::State	1320	MODULE = Coro::State PACKAGE = Coro::State
1007		1321
1008	PROTOTYPES: DISABLE	1322	PROTOTYPES: DISABLE
…		…
1014	#endif	1328	#endif
1015	BOOT_PAGESIZE;	1329	BOOT_PAGESIZE;
1016		1330
1017	coro_state_stash = gv_stashpv ("Coro::State", TRUE);	1331	coro_state_stash = gv_stashpv ("Coro::State", TRUE);
1018		1332
		1333	newCONSTSUB (coro_state_stash, "CC_TRACE" , newSViv (CC_TRACE));
		1334	newCONSTSUB (coro_state_stash, "CC_TRACE_SUB" , newSViv (CC_TRACE_SUB));
		1335	newCONSTSUB (coro_state_stash, "CC_TRACE_LINE", newSViv (CC_TRACE_LINE));
		1336	newCONSTSUB (coro_state_stash, "CC_TRACE_ALL" , newSViv (CC_TRACE_ALL));
		1337
1019	newCONSTSUB (coro_state_stash, "SAVE_DEFAV", newSViv (TRANSFER_SAVE_DEFAV));	1338	newCONSTSUB (coro_state_stash, "SAVE_DEFAV", newSViv (CORO_SAVE_DEFAV));
1020	newCONSTSUB (coro_state_stash, "SAVE_DEFSV", newSViv (TRANSFER_SAVE_DEFSV));	1339	newCONSTSUB (coro_state_stash, "SAVE_DEFSV", newSViv (CORO_SAVE_DEFSV));
1021	newCONSTSUB (coro_state_stash, "SAVE_ERRSV", newSViv (TRANSFER_SAVE_ERRSV));	1340	newCONSTSUB (coro_state_stash, "SAVE_ERRSV", newSViv (CORO_SAVE_ERRSV));
		1341	newCONSTSUB (coro_state_stash, "SAVE_IRSSV", newSViv (CORO_SAVE_IRSSV));
		1342	newCONSTSUB (coro_state_stash, "SAVE_DEFFH", newSViv (CORO_SAVE_DEFFH));
		1343	newCONSTSUB (coro_state_stash, "SAVE_DEF", newSViv (CORO_SAVE_DEF));
		1344	newCONSTSUB (coro_state_stash, "SAVE_ALL", newSViv (CORO_SAVE_ALL));
1022		1345
1023	main_mainstack = PL_mainstack;	1346	main_mainstack = PL_mainstack;
		1347	main_top_env = PL_top_env;
		1348
		1349	while (main_top_env->je_prev)
		1350	main_top_env = main_top_env->je_prev;
1024		1351
1025	coroapi.ver = CORO_API_VERSION;	1352	coroapi.ver = CORO_API_VERSION;
1026	coroapi.transfer = api_transfer;	1353	coroapi.transfer = api_transfer;
1027		1354
1028	assert (("PRIO_NORMAL must be 0", !PRIO_NORMAL));	1355	assert (("PRIO_NORMAL must be 0", !PRIO_NORMAL));
…		…
1036	HV *hv;	1363	HV *hv;
1037	int i;	1364	int i;
1038		1365
1039	Newz (0, coro, 1, struct coro);	1366	Newz (0, coro, 1, struct coro);
1040	coro->args = newAV ();	1367	coro->args = newAV ();
		1368	coro->save = CORO_SAVE_DEF;
		1369	coro->flags = CF_NEW;
1041		1370
		1371	if (coro_first) coro_first->prev = coro;
		1372	coro->next = coro_first;
		1373	coro_first = coro;
		1374
1042	hv = newHV ();	1375	coro->hv = hv = newHV ();
1043	sv_magicext ((SV )hv, 0, PERL_MAGIC_ext, &coro_state_vtbl, (char )coro, 0)->mg_flags \|= MGf_DUP;	1376	sv_magicext ((SV )hv, 0, PERL_MAGIC_ext, &coro_state_vtbl, (char )coro, 0)->mg_flags \|= MGf_DUP;
1044	RETVAL = sv_bless (newRV_noinc ((SV *)hv), gv_stashpv (klass, 1));	1377	RETVAL = sv_bless (newRV_noinc ((SV *)hv), gv_stashpv (klass, 1));
1045		1378
1046	for (i = 1; i < items; i++)	1379	for (i = 1; i < items; i++)
1047	av_push (coro->args, newSVsv (ST (i)));	1380	av_push (coro->args, newSVsv (ST (i)));
1048
1049	/coro->mainstack = 0; //actual work is done inside transfer /
1050	/coro->stack = 0;/
1051	}	1381	}
1052	OUTPUT:	1382	OUTPUT:
		1383	RETVAL
		1384
		1385	int
		1386	save (SV *coro, int new_save = -1)
		1387	CODE:
		1388	RETVAL = api_save (coro, new_save);
		1389	OUTPUT:
		1390	RETVAL
		1391
		1392	int
		1393	save_also (SV *coro_sv, int save_also)
		1394	CODE:
		1395	{
		1396	struct coro *coro = SvSTATE (coro_sv);
		1397	RETVAL = coro->save;
		1398	coro->save \|= save_also;
		1399	}
		1400	OUTPUT:
1053	RETVAL	1401	RETVAL
1054		1402
1055	void	1403	void
1056	_set_stacklevel (...)	1404	_set_stacklevel (...)
1057	ALIAS:	1405	ALIAS:
1058	Coro::State::transfer = 1	1406	Coro::State::transfer = 1
1059	Coro::schedule = 2	1407	Coro::schedule = 2
1060	Coro::cede = 3	1408	Coro::cede = 3
1061	Coro::Cont::yield = 4	1409	Coro::cede_notself = 4
1062	CODE:	1410	CODE:
1063	{	1411	{
1064	struct transfer_args ta;	1412	struct transfer_args ta;
1065		1413
1066	switch (ix)	1414	switch (ix)
1067	{	1415	{
1068	case 0:	1416	case 0:
1069	ta.prev = (struct coro )INT2PTR (coro_stack , SvIV (ST (0)));	1417	ta.prev = (struct coro )INT2PTR (coro_cctx , SvIV (ST (0)));
1070	ta.next = 0;	1418	ta.next = 0;
1071	ta.flags = TRANSFER_SET_STACKLEVEL;
1072	break;	1419	break;
1073		1420
1074	case 1:	1421	case 1:
1075	if (items != 3)	1422	if (items != 2)
1076	croak ("Coro::State::transfer(prev,next,flags) expects three arguments, not %d", items);	1423	croak ("Coro::State::transfer (prev,next) expects two arguments, not %d", items);
1077		1424
1078	prepare_transfer (&ta, ST (0), ST (1), SvIV (ST (2)));	1425	prepare_transfer (aTHX_ &ta, ST (0), ST (1));
1079	break;	1426	break;
1080		1427
1081	case 2:	1428	case 2:
1082	prepare_schedule (&ta);	1429	prepare_schedule (aTHX_ &ta);
1083	break;	1430	break;
1084		1431
1085	case 3:	1432	case 3:
1086	prepare_cede (&ta);	1433	prepare_cede (aTHX_ &ta);
1087	break;	1434	break;
1088		1435
1089	case 4:	1436	case 4:
1090	{	1437	if (!prepare_cede_notself (aTHX_ &ta))
1091	SV *yieldstack;	1438	XSRETURN_EMPTY;
1092	SV *sv;
1093	AV *defav = GvAV (PL_defgv);
1094		1439
1095	yieldstack = *hv_fetch (
1096	(HV *)SvRV (GvSV (coro_current)),
1097	"yieldstack", sizeof ("yieldstack") - 1,
1098	0
1099	);
1100
1101	/* set up @_ -- ugly */
1102	av_clear (defav);
1103	av_fill (defav, items - 1);
1104	while (items--)
1105	av_store (defav, items, SvREFCNT_inc (ST(items)));
1106
1107	sv = av_pop ((AV *)SvRV (yieldstack));
1108	ta.prev = SvSTATE (av_fetch ((AV )SvRV (sv), 0, 0));
1109	ta.next = SvSTATE (av_fetch ((AV )SvRV (sv), 1, 0));
1110	ta.flags = 0;
1111	SvREFCNT_dec (sv);
1112	}
1113	break;	1440	break;
1114
1115	}	1441	}
1116		1442
		1443	BARRIER;
1117	TRANSFER (ta);	1444	TRANSFER (ta);
1118	}
1119		1445
1120	void	1446	if (GIMME_V != G_VOID && ta.next != ta.prev)
1121	_clone_state_from (SV dst, SV src)	1447	XSRETURN_YES;
		1448	}
		1449
		1450	bool
		1451	_destroy (SV *coro_sv)
1122	CODE:	1452	CODE:
1123	{	1453	RETVAL = coro_state_destroy (aTHX_ SvSTATE (coro_sv));
1124	struct coro *coro_src = SvSTATE (src);	1454	OUTPUT:
1125		1455	RETVAL
1126	sv_unmagic (SvRV (dst), PERL_MAGIC_ext);
1127
1128	++coro_src->refcnt;
1129	sv_magicext (SvRV (dst), 0, PERL_MAGIC_ext, &coro_state_vtbl, (char *)coro_src, 0)->mg_flags \|= MGf_DUP;
1130	}
1131		1456
1132	void	1457	void
1133	_exit (code)	1458	_exit (code)
1134	int code	1459	int code
1135	PROTOTYPE: $	1460	PROTOTYPE: $
1136	CODE:	1461	CODE:
1137	_exit (code);	1462	_exit (code);
1138		1463
		1464	int
		1465	cctx_stacksize (int new_stacksize = 0)
		1466	CODE:
		1467	RETVAL = coro_stacksize;
		1468	if (new_stacksize)
		1469	coro_stacksize = new_stacksize;
		1470	OUTPUT:
		1471	RETVAL
		1472
		1473	int
		1474	cctx_count ()
		1475	CODE:
		1476	RETVAL = cctx_count;
		1477	OUTPUT:
		1478	RETVAL
		1479
		1480	int
		1481	cctx_idle ()
		1482	CODE:
		1483	RETVAL = cctx_idle;
		1484	OUTPUT:
		1485	RETVAL
		1486
		1487	void
		1488	list ()
		1489	PPCODE:
		1490	{
		1491	struct coro *coro;
		1492	for (coro = coro_first; coro; coro = coro->next)
		1493	if (coro->hv)
		1494	XPUSHs (sv_2mortal (newRV_inc ((SV *)coro->hv)));
		1495	}
		1496
		1497	void
		1498	call (Coro::State coro, SV *coderef)
		1499	ALIAS:
		1500	eval = 1
		1501	CODE:
		1502	{
		1503	if (coro->mainstack)
		1504	{
		1505	struct coro temp;
		1506	Zero (&temp, 1, struct coro);
		1507	temp.save = CORO_SAVE_ALL;
		1508
		1509	if (!(coro->flags & CF_RUNNING))
		1510	{
		1511	save_perl (aTHX_ &temp);
		1512	load_perl (aTHX_ coro);
		1513	}
		1514
		1515	{
		1516	dSP;
		1517	ENTER;
		1518	SAVETMPS;
		1519	PUSHMARK (SP);
		1520	PUTBACK;
		1521	if (ix)
		1522	eval_sv (coderef, 0);
		1523	else
		1524	call_sv (coderef, G_KEEPERR \| G_EVAL \| G_VOID \| G_DISCARD);
		1525	SPAGAIN;
		1526	FREETMPS;
		1527	LEAVE;
		1528	PUTBACK;
		1529	}
		1530
		1531	if (!(coro->flags & CF_RUNNING))
		1532	{
		1533	save_perl (aTHX_ coro);
		1534	load_perl (aTHX_ &temp);
		1535	}
		1536	}
		1537	}
		1538
		1539	SV *
		1540	is_ready (Coro::State coro)
		1541	PROTOTYPE: $
		1542	ALIAS:
		1543	is_ready = CF_READY
		1544	is_running = CF_RUNNING
		1545	is_new = CF_NEW
		1546	is_destroyed = CF_DESTROYED
		1547	CODE:
		1548	RETVAL = boolSV (coro->flags & ix);
		1549	OUTPUT:
		1550	RETVAL
		1551
		1552	void
		1553	trace (Coro::State coro, int flags = CC_TRACE \| CC_TRACE_SUB)
		1554	CODE:
		1555	if (flags & CC_TRACE)
		1556	{
		1557	if (!coro->cctx)
		1558	coro->cctx = cctx_new ();
		1559	else if (!(coro->cctx->flags & CC_TRACE))
		1560	croak ("cannot enable tracing on coroutine with custom stack");
		1561
		1562	coro->cctx->flags \|= flags & (CC_TRACE \| CC_TRACE_ALL);
		1563	}
		1564	else
		1565	if (coro->cctx && coro->cctx->flags & CC_TRACE)
		1566	{
		1567	coro->cctx->flags &= ~(CC_TRACE \| CC_TRACE_ALL);
		1568	coro->cctx->flags \|= CC_NOREUSE;
		1569	}
		1570
		1571	SV *
		1572	has_stack (Coro::State coro)
		1573	PROTOTYPE: $
		1574	CODE:
		1575	RETVAL = boolSV (!!coro->cctx);
		1576	OUTPUT:
		1577	RETVAL
		1578
		1579	int
		1580	is_traced (Coro::State coro)
		1581	PROTOTYPE: $
		1582	CODE:
		1583	RETVAL = (coro->cctx ? coro->cctx->flags : 0) & CC_TRACE_ALL;
		1584	OUTPUT:
		1585	RETVAL
		1586
		1587	IV
		1588	rss (Coro::State coro)
		1589	PROTOTYPE: $
		1590	CODE:
		1591	RETVAL = coro_rss (coro);
		1592	OUTPUT:
		1593	RETVAL
		1594
		1595
1139	MODULE = Coro::State PACKAGE = Coro	1596	MODULE = Coro::State PACKAGE = Coro
1140		1597
1141	BOOT:	1598	BOOT:
1142	{	1599	{
1143	int i;	1600	int i;
		1601
		1602	sv_pool_rss = get_sv ("Coro::POOL_RSS" , TRUE);
		1603	sv_pool_size = get_sv ("Coro::POOL_SIZE" , TRUE);
		1604	av_async_pool = get_av ("Coro::async_pool", TRUE);
		1605
		1606	coro_current = get_sv ("Coro::current", FALSE);
		1607	SvREADONLY_on (coro_current);
1144		1608
1145	coro_stash = gv_stashpv ("Coro", TRUE);	1609	coro_stash = gv_stashpv ("Coro", TRUE);
1146		1610
1147	newCONSTSUB (coro_stash, "PRIO_MAX", newSViv (PRIO_MAX));	1611	newCONSTSUB (coro_stash, "PRIO_MAX", newSViv (PRIO_MAX));
1148	newCONSTSUB (coro_stash, "PRIO_HIGH", newSViv (PRIO_HIGH));	1612	newCONSTSUB (coro_stash, "PRIO_HIGH", newSViv (PRIO_HIGH));
1149	newCONSTSUB (coro_stash, "PRIO_NORMAL", newSViv (PRIO_NORMAL));	1613	newCONSTSUB (coro_stash, "PRIO_NORMAL", newSViv (PRIO_NORMAL));
1150	newCONSTSUB (coro_stash, "PRIO_LOW", newSViv (PRIO_LOW));	1614	newCONSTSUB (coro_stash, "PRIO_LOW", newSViv (PRIO_LOW));
1151	newCONSTSUB (coro_stash, "PRIO_IDLE", newSViv (PRIO_IDLE));	1615	newCONSTSUB (coro_stash, "PRIO_IDLE", newSViv (PRIO_IDLE));
1152	newCONSTSUB (coro_stash, "PRIO_MIN", newSViv (PRIO_MIN));	1616	newCONSTSUB (coro_stash, "PRIO_MIN", newSViv (PRIO_MIN));
1153		1617
1154	coro_current = gv_fetchpv ("Coro::current", TRUE, SVt_PV);
1155	coro_idle = gv_fetchpv ("Coro::idle" , TRUE, SVt_PV);
1156
1157	for (i = PRIO_MAX - PRIO_MIN + 1; i--; )	1618	for (i = PRIO_MAX - PRIO_MIN + 1; i--; )
1158	coro_ready[i] = newAV ();	1619	coro_ready[i] = newAV ();
1159		1620
1160	{	1621	{
1161	SV *sv = perl_get_sv("Coro::API", 1);	1622	SV *sv = perl_get_sv("Coro::API", 1);
1162		1623
1163	coroapi.schedule = api_schedule;	1624	coroapi.schedule = api_schedule;
		1625	coroapi.save = api_save;
1164	coroapi.cede = api_cede;	1626	coroapi.cede = api_cede;
		1627	coroapi.cede_notself = api_cede_notself;
1165	coroapi.ready = api_ready;	1628	coroapi.ready = api_ready;
		1629	coroapi.is_ready = api_is_ready;
1166	coroapi.nready = &coro_nready;	1630	coroapi.nready = &coro_nready;
1167	coroapi.current = coro_current;	1631	coroapi.current = coro_current;
1168		1632
1169	GCoroAPI = &coroapi;	1633	GCoroAPI = &coroapi;
1170	sv_setiv (sv, (IV)&coroapi);	1634	sv_setiv (sv, (IV)&coroapi);
1171	SvREADONLY_on (sv);	1635	SvREADONLY_on (sv);
1172	}	1636	}
1173	}	1637	}
		1638
		1639	void
		1640	_set_current (SV *current)
		1641	PROTOTYPE: $
		1642	CODE:
		1643	SvREFCNT_dec (SvRV (coro_current));
		1644	SvRV_set (coro_current, SvREFCNT_inc (SvRV (current)));
1174		1645
1175	int	1646	int
1176	prio (Coro::State coro, int newprio = 0)	1647	prio (Coro::State coro, int newprio = 0)
1177	ALIAS:	1648	ALIAS:
1178	nice = 1	1649	nice = 1
…		…
1181	RETVAL = coro->prio;	1652	RETVAL = coro->prio;
1182		1653
1183	if (items > 1)	1654	if (items > 1)
1184	{	1655	{
1185	if (ix)	1656	if (ix)
1186	newprio += coro->prio;	1657	newprio = coro->prio - newprio;
1187		1658
1188	if (newprio < PRIO_MIN) newprio = PRIO_MIN;	1659	if (newprio < PRIO_MIN) newprio = PRIO_MIN;
1189	if (newprio > PRIO_MAX) newprio = PRIO_MAX;	1660	if (newprio > PRIO_MAX) newprio = PRIO_MAX;
1190		1661
1191	coro->prio = newprio;	1662	coro->prio = newprio;
1192	}	1663	}
1193	}	1664	}
		1665	OUTPUT:
		1666	RETVAL
1194		1667
1195	void	1668	SV *
1196	ready (SV *self)	1669	ready (SV *self)
1197	PROTOTYPE: $	1670	PROTOTYPE: $
1198	CODE:	1671	CODE:
1199	api_ready (self);	1672	RETVAL = boolSV (api_ready (self));
		1673	OUTPUT:
		1674	RETVAL
1200		1675
1201	int	1676	int
1202	nready (...)	1677	nready (...)
1203	PROTOTYPE:	1678	PROTOTYPE:
1204	CODE:	1679	CODE:
1205	RETVAL = coro_nready;	1680	RETVAL = coro_nready;
1206	OUTPUT:	1681	OUTPUT:
1207	RETVAL	1682	RETVAL
1208		1683
		1684	# for async_pool speedup
		1685	void
		1686	_pool_1 (SV *cb)
		1687	CODE:
		1688	{
		1689	int i, len;
		1690	HV hv = (HV )SvRV (coro_current);
		1691	AV *defav = GvAV (PL_defgv);
		1692	SV *invoke = hv_delete (hv, "_invoke", sizeof ("_invoke") - 1, 0);
		1693	AV *invoke_av;
		1694
		1695	if (!invoke)
		1696	croak ("\3terminate\2\n");
		1697
		1698	hv_store (hv, "desc", sizeof ("desc") - 1,
		1699	newSVpvn ("[async_pool]", sizeof ("[async_pool]") - 1), 0);
		1700
		1701	invoke_av = (AV *)SvRV (invoke);
		1702	len = av_len (invoke_av);
		1703
		1704	sv_setsv (cb, AvARRAY (invoke_av)[0]);
		1705
		1706	if (len > 0)
		1707	{
		1708	av_fill (defav, len - 1);
		1709	for (i = 0; i < len; ++i)
		1710	av_store (defav, i, SvREFCNT_inc (AvARRAY (invoke_av)[i + 1]));
		1711	}
		1712
		1713	SvREFCNT_dec (invoke);
		1714	}
		1715
		1716	void
		1717	_pool_2 (SV *cb)
		1718	CODE:
		1719	{
		1720	struct coro *coro = SvSTATE (coro_current);
		1721
		1722	sv_setsv (cb, &PL_sv_undef);
		1723
		1724	if (coro_rss (coro) > SvIV (sv_pool_rss)
		1725	\|\| av_len (av_async_pool) + 1 >= SvIV (sv_pool_size))
		1726	croak ("\3terminate\2\n");
		1727
		1728	av_clear (GvAV (PL_defgv));
		1729	hv_store ((HV *)SvRV (coro_current), "desc", sizeof ("desc") - 1,
		1730	newSVpvn ("[async_pool idle]", sizeof ("[async_pool idle]") - 1), 0);
		1731	coro->save = CORO_SAVE_DEF;
		1732	coro->prio = 0;
		1733	av_push (av_async_pool, newSVsv (coro_current));
		1734	}
		1735
		1736
1209	MODULE = Coro::State PACKAGE = Coro::AIO	1737	MODULE = Coro::State PACKAGE = Coro::AIO
1210		1738
1211	SV *	1739	SV *
1212	_get_state ()	1740	_get_state ()
1213	CODE:	1741	CODE:
1214	{	1742	{
1215	struct {	1743	struct io_state *data;
1216	int errorno;
1217	int laststype;
1218	int laststatval;
1219	Stat_t statcache;
1220	} data;
1221		1744
		1745	RETVAL = newSV (sizeof (struct io_state));
		1746	data = (struct io_state *)SvPVX (RETVAL);
		1747	SvCUR_set (RETVAL, sizeof (struct io_state));
		1748	SvPOK_only (RETVAL);
		1749
1222	data.errorno = errno;	1750	data->errorno = errno;
1223	data.laststype = PL_laststype;	1751	data->laststype = PL_laststype;
1224	data.laststatval = PL_laststatval;	1752	data->laststatval = PL_laststatval;
1225	data.statcache = PL_statcache;	1753	data->statcache = PL_statcache;
1226
1227	RETVAL = newSVpvn ((char *)&data, sizeof data);
1228	}	1754	}
1229	OUTPUT:	1755	OUTPUT:
1230	RETVAL	1756	RETVAL
1231		1757
1232	void	1758	void
1233	_set_state (char *data_)	1759	_set_state (char *data_)
1234	PROTOTYPE: $	1760	PROTOTYPE: $
1235	CODE:	1761	CODE:
1236	{	1762	{
1237	struct {	1763	struct io_state data = (void )data_;
1238	int errorno;
1239	int laststype;
1240	int laststatval;
1241	Stat_t statcache;
1242	} data = (void )data_;
1243		1764
1244	errno = data->errorno;	1765	errno = data->errorno;
1245	PL_laststype = data->laststype;	1766	PL_laststype = data->laststype;
1246	PL_laststatval = data->laststatval;	1767	PL_laststatval = data->laststatval;
1247	PL_statcache = data->statcache;	1768	PL_statcache = data->statcache;
1248	}	1769	}
		1770

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Comparing Coro/Coro/State.xs (file contents): Revision 1.100 by root, Mon Nov 27 00:07:49 2006 UTC vs. Revision 1.167 by root, Thu Sep 27 15:52:31 2007 UTC

Diff Legend

Comparing Coro/Coro/State.xs (file contents):
Revision 1.100 by root, Mon Nov 27 00:07:49 2006 UTC vs.
Revision 1.167 by root, Thu Sep 27 15:52:31 2007 UTC