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

Comparing Coro/Coro/State.xs (file contents):
Revision 1.102 by root, Mon Nov 27 01:28:03 2006 UTC vs.
Revision 1.169 by root, Thu Sep 27 16:25:10 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
		303
		304	static struct coro *
		305	SvSTATE_ (pTHX_ SV *coro)
		306	{
		307	HV *stash;
		308	MAGIC *mg;
		309
		310	if (SvROK (coro))
		311	coro = SvRV (coro);
		312
		313	stash = SvSTASH (coro);
		314	if (stash != coro_stash && stash != coro_state_stash)
		315	{
		316	/* very slow, but rare, check */
		317	if (!sv_derived_from (sv_2mortal (newRV_inc (coro)), "Coro::State"))
		318	croak ("Coro::State object required");
		319	}
		320
		321	mg = CORO_MAGIC (coro);
		322	return (struct coro *)mg->mg_ptr;
		323	}
		324
		325	#define SvSTATE(sv) SvSTATE_ (aTHX_ (sv))
234		326
235	/* the next two functions merely cache the padlists */	327	/* the next two functions merely cache the padlists */
236	static void	328	static void
237	get_padlist (CV *cv)	329	get_padlist (pTHX_ CV *cv)
238	{	330	{
239	MAGIC mg = mg_find ((SV )cv, PERL_MAGIC_coro);	331	MAGIC *mg = CORO_MAGIC (cv);
		332	AV *av;
240		333
241	if (mg && AvFILLp ((AV *)mg->mg_obj) >= 0)	334	if (mg && AvFILLp ((av = (AV *)mg->mg_obj)) >= 0)
242	CvPADLIST (cv) = (AV )av_pop ((AV )mg->mg_obj);	335	CvPADLIST (cv) = (AV *)AvARRAY (av)[AvFILLp (av)--];
243	else	336	else
244	{	337	{
245	#if 0	338	#if CORO_PREFER_PERL_FUNCTIONS
246	/* this is probably cleaner, but also slower? */	339	/* this is probably cleaner, but also slower? */
247	CV *cp = Perl_cv_clone (cv);	340	CV *cp = Perl_cv_clone (cv);
248	CvPADLIST (cv) = CvPADLIST (cp);	341	CvPADLIST (cv) = CvPADLIST (cp);
249	CvPADLIST (cp) = 0;	342	CvPADLIST (cp) = 0;
250	SvREFCNT_dec (cp);	343	SvREFCNT_dec (cp);
251	#else	344	#else
252	CvPADLIST (cv) = coro_clone_padlist (cv);	345	CvPADLIST (cv) = coro_clone_padlist (aTHX_ cv);
253	#endif	346	#endif
254	}	347	}
255	}	348	}
256		349
257	static void	350	static void
258	put_padlist (CV *cv)	351	put_padlist (pTHX_ CV *cv)
259	{	352	{
260	MAGIC mg = mg_find ((SV )cv, PERL_MAGIC_coro);	353	MAGIC *mg = CORO_MAGIC (cv);
		354	AV *av;
261		355
262	if (!mg)	356	if (!mg)
263	{	357	{
264	sv_magic ((SV *)cv, 0, PERL_MAGIC_coro, 0, 0);	358	sv_magic ((SV *)cv, 0, PERL_MAGIC_coro, 0, 0);
265	mg = mg_find ((SV *)cv, PERL_MAGIC_coro);	359	mg = mg_find ((SV *)cv, PERL_MAGIC_coro);
266	mg->mg_virtual = &vtbl_coro;	360	mg->mg_virtual = &vtbl_coro;
267	mg->mg_obj = (SV *)newAV ();	361	mg->mg_obj = (SV *)newAV ();
268	}	362	}
269		363
270	av_push ((AV )mg->mg_obj, (SV )CvPADLIST (cv));	364	av = (AV *)mg->mg_obj;
		365
		366	if (AvFILLp (av) >= AvMAX (av))
		367	av_extend (av, AvMAX (av) + 1);
		368
		369	AvARRAY (av)[++AvFILLp (av)] = (SV *)CvPADLIST (cv);
271	}	370	}
		371
		372	/ load & save, init *****************************************************/
272		373
273	#define SB do {	374	#define SB do {
274	#define SE } while (0)	375	#define SE } while (0)
275		376
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	377	#define REPLACE_SV(sv,val) SB SvREFCNT_dec (sv); (sv) = (val); (val) = 0; SE
280		378
281	static void	379	static void
282	load_state(Coro__State c)	380	load_perl (pTHX_ Coro__State c)
283	{	381	{
284	PL_dowarn = c->dowarn;	382	#define VAR(name,type) PL_ ## name = c->name;
285	PL_in_eval = c->in_eval;	383	# include "state.h"
286		384	#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		385
318	if (c->defav) REPLACE_SV (GvAV (PL_defgv), c->defav);	386	if (c->defav) REPLACE_SV (GvAV (PL_defgv), c->defav);
319	if (c->defsv) REPLACE_SV (DEFSV , c->defsv);	387	if (c->defsv) REPLACE_SV (DEFSV , c->defsv);
320	if (c->errsv) REPLACE_SV (ERRSV , c->errsv);	388	if (c->errsv) REPLACE_SV (ERRSV , c->errsv);
		389	if (c->deffh) REPLACE_SV (PL_defoutgv , c->deffh);
		390
		391	if (c->irssv)
		392	{
		393	if (c->irssv == PL_rs \|\| sv_eq (PL_rs, c->irssv))
		394	{
		395	SvREFCNT_dec (c->irssv);
		396	c->irssv = 0;
		397	}
		398	else
		399	{
		400	REPLACE_SV (PL_rs, c->irssv);
		401	if (!c->irssv_sv) c->irssv_sv = get_sv ("/", 0);
		402	sv_setsv (c->irssv_sv, PL_rs);
		403	}
		404	}
321		405
322	{	406	{
323	dSP;	407	dSP;
324	CV *cv;	408	CV *cv;
325		409
326	/* now do the ugly restore mess */	410	/* now do the ugly restore mess */
327	while ((cv = (CV *)POPs))	411	while ((cv = (CV *)POPs))
328	{	412	{
329	AV padlist = (AV )POPs;
330
331	if (padlist)
332	{
333	put_padlist (cv); /* mark this padlist as available */	413	put_padlist (aTHX_ cv); /* mark this padlist as available */
334	CvPADLIST(cv) = padlist;	414	CvDEPTH (cv) = PTR2IV (POPs);
335	}	415	CvPADLIST (cv) = (AV *)POPs;
336
337	++CvDEPTH(cv);
338	}	416	}
339		417
340	PUTBACK;	418	PUTBACK;
341	}	419	}
342	}	420	}
343		421
344	static void	422	static void
345	save_state(Coro__State c, int flags)	423	save_perl (pTHX_ Coro__State c)
346	{	424	{
347	{	425	{
348	dSP;	426	dSP;
349	I32 cxix = cxstack_ix;	427	I32 cxix = cxstack_ix;
350	PERL_CONTEXT *ccstk = cxstack;	428	PERL_CONTEXT *ccstk = cxstack;
…		…
353	/*	431	/*
354	* the worst thing you can imagine happens first - we have to save	432	* the worst thing you can imagine happens first - we have to save
355	* (and reinitialize) all cv's in the whole callchain :(	433	* (and reinitialize) all cv's in the whole callchain :(
356	*/	434	*/
357		435
358	PUSHs (Nullsv);	436	XPUSHs (Nullsv);
359	/* this loop was inspired by pp_caller */	437	/* this loop was inspired by pp_caller */
360	for (;;)	438	for (;;)
361	{	439	{
362	while (cxix >= 0)	440	while (cxix >= 0)
363	{	441	{
364	PERL_CONTEXT *cx = &ccstk[cxix--];	442	PERL_CONTEXT *cx = &ccstk[cxix--];
365		443
366	if (CxTYPE(cx) == CXt_SUB)	444	if (CxTYPE (cx) == CXt_SUB \|\| CxTYPE (cx) == CXt_FORMAT)
367	{	445	{
368	CV *cv = cx->blk_sub.cv;	446	CV *cv = cx->blk_sub.cv;
		447
369	if (CvDEPTH(cv))	448	if (CvDEPTH (cv))
370	{	449	{
371	EXTEND (SP, CvDEPTH(cv)*2);	450	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));	451	PUSHs ((SV *)CvPADLIST (cv));
		452	PUSHs (INT2PTR (SV *, CvDEPTH (cv)));
381	PUSHs ((SV *)cv);	453	PUSHs ((SV *)cv);
382		454
		455	CvDEPTH (cv) = 0;
383	get_padlist (cv);	456	get_padlist (aTHX_ cv);
384	}	457	}
385	}	458	}
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	}	459	}
395		460
396	if (top_si->si_type == PERLSI_MAIN)	461	if (top_si->si_type == PERLSI_MAIN)
397	break;	462	break;
398		463
399	top_si = top_si->si_prev;	464	top_si = top_si->si_prev;
400	ccstk = top_si->si_cxstack;	465	ccstk = top_si->si_cxstack;
401	cxix = top_si->si_cxix;	466	cxix = top_si->si_cxix;
402	}	467	}
403		468
404	PUTBACK;	469	PUTBACK;
405	}	470	}
406		471
407	c->defav = flags & TRANSFER_SAVE_DEFAV ? (AV *)SvREFCNT_inc (GvAV (PL_defgv)) : 0;	472	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;	473	c->defsv = c->save & CORO_SAVE_DEFSV ? SvREFCNT_inc (DEFSV) : 0;
409	c->errsv = flags & TRANSFER_SAVE_ERRSV ? SvREFCNT_inc (ERRSV) : 0;	474	c->errsv = c->save & CORO_SAVE_ERRSV ? SvREFCNT_inc (ERRSV) : 0;
		475	c->deffh = c->save & CORO_SAVE_DEFFH ? (GV *)SvREFCNT_inc (PL_defoutgv) : 0;
		476	c->irssv = c->save & CORO_SAVE_IRSSV ? SvREFCNT_inc (PL_rs) : 0;
410		477
411	c->dowarn = PL_dowarn;	478	#define VAR(name,type)c->name = PL_ ## name;
412	c->in_eval = PL_in_eval;	479	# include "state.h"
413		480	#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	}	481	}
445		482
446	/*	483	/*
447	* allocate various perl stacks. This is an exact copy	484	* allocate various perl stacks. This is an exact copy
448	* of perl.c:init_stacks, except that it uses less memory	485	* of perl.c:init_stacks, except that it uses less memory
449	* on the (sometimes correct) assumption that coroutines do	486	* on the (sometimes correct) assumption that coroutines do
450	* not usually need a lot of stackspace.	487	* not usually need a lot of stackspace.
451	*/	488	*/
		489	#if CORO_PREFER_PERL_FUNCTIONS
		490	# define coro_init_stacks init_stacks
		491	#else
452	static void	492	static void
453	coro_init_stacks ()	493	coro_init_stacks (pTHX)
454	{	494	{
455	PL_curstackinfo = new_stackinfo(96, 1024/sizeof(PERL_CONTEXT) - 1);	495	PL_curstackinfo = new_stackinfo(64, 6);
456	PL_curstackinfo->si_type = PERLSI_MAIN;	496	PL_curstackinfo->si_type = PERLSI_MAIN;
457	PL_curstack = PL_curstackinfo->si_stack;	497	PL_curstack = PL_curstackinfo->si_stack;
458	PL_mainstack = PL_curstack; /* remember in case we switch stacks */	498	PL_mainstack = PL_curstack; /* remember in case we switch stacks */
459		499
460	PL_stack_base = AvARRAY(PL_curstack);	500	PL_stack_base = AvARRAY(PL_curstack);
461	PL_stack_sp = PL_stack_base;	501	PL_stack_sp = PL_stack_base;
462	PL_stack_max = PL_stack_base + AvMAX(PL_curstack);	502	PL_stack_max = PL_stack_base + AvMAX(PL_curstack);
463		503
464	New(50,PL_tmps_stack,96,SV*);	504	New(50,PL_tmps_stack,64,SV*);
465	PL_tmps_floor = -1;	505	PL_tmps_floor = -1;
466	PL_tmps_ix = -1;	506	PL_tmps_ix = -1;
467	PL_tmps_max = 96;	507	PL_tmps_max = 64;
468		508
469	New(54,PL_markstack,16,I32);	509	New(54,PL_markstack,16,I32);
470	PL_markstack_ptr = PL_markstack;	510	PL_markstack_ptr = PL_markstack;
471	PL_markstack_max = PL_markstack + 16;	511	PL_markstack_max = PL_markstack + 16;
472		512
…		…
476		516
477	New(54,PL_scopestack,16,I32);	517	New(54,PL_scopestack,16,I32);
478	PL_scopestack_ix = 0;	518	PL_scopestack_ix = 0;
479	PL_scopestack_max = 16;	519	PL_scopestack_max = 16;
480		520
481	New(54,PL_savestack,96,ANY);	521	New(54,PL_savestack,64,ANY);
482	PL_savestack_ix = 0;	522	PL_savestack_ix = 0;
483	PL_savestack_max = 96;	523	PL_savestack_max = 64;
484		524
485	#if !PERL_VERSION_ATLEAST (5,9,0)	525	#if !PERL_VERSION_ATLEAST (5,9,0)
486	New(54,PL_retstack,8,OP*);	526	New(54,PL_retstack,4,OP*);
487	PL_retstack_ix = 0;	527	PL_retstack_ix = 0;
488	PL_retstack_max = 8;	528	PL_retstack_max = 4;
489	#endif	529	#endif
490	}	530	}
		531	#endif
491		532
492	/*	533	/*
493	* destroy the stacks, the callchain etc...	534	* destroy the stacks, the callchain etc...
494	*/	535	*/
495	static void	536	static void
496	coro_destroy_stacks()	537	coro_destroy_stacks (pTHX)
497	{	538	{
498	if (!IN_DESTRUCT)	539	if (!IN_DESTRUCT)
499	{	540	{
500	/* is this ugly, I ask? */	541	/* restore all saved variables and stuff */
501	LEAVE_SCOPE (0);	542	LEAVE_SCOPE (0);
		543	assert (PL_tmps_floor == -1);
502		544
503	/* sure it is, but more important: is it correct?? :/ */	545	/* free all temporaries */
504	FREETMPS;	546	FREETMPS;
		547	assert (PL_tmps_ix == -1);
505		548
		549	/* unwind all extra stacks */
506	/POPSTACK_TO (PL_mainstack);//D//use/	550	POPSTACK_TO (PL_mainstack);
		551
		552	/* unwind main stack */
		553	dounwind (-1);
507	}	554	}
508		555
509	while (PL_curstackinfo->si_next)	556	while (PL_curstackinfo->si_next)
510	PL_curstackinfo = PL_curstackinfo->si_next;	557	PL_curstackinfo = PL_curstackinfo->si_next;
511		558
512	while (PL_curstackinfo)	559	while (PL_curstackinfo)
513	{	560	{
514	PERL_SI *p = PL_curstackinfo->si_prev;	561	PERL_SI *p = PL_curstackinfo->si_prev;
515		562
516	{ /D//remove/
517	dSP;
518	SWITCHSTACK (PL_curstack, PL_curstackinfo->si_stack);
519	PUTBACK; /* possibly superfluous */
520	}
521
522	if (!IN_DESTRUCT)	563	if (!IN_DESTRUCT)
523	{
524	dounwind (-1);/D//remove/
525	SvREFCNT_dec (PL_curstackinfo->si_stack);	564	SvREFCNT_dec (PL_curstackinfo->si_stack);
526	}
527		565
528	Safefree (PL_curstackinfo->si_cxstack);	566	Safefree (PL_curstackinfo->si_cxstack);
529	Safefree (PL_curstackinfo);	567	Safefree (PL_curstackinfo);
530	PL_curstackinfo = p;	568	PL_curstackinfo = p;
531	}	569	}
…		…
537	#if !PERL_VERSION_ATLEAST (5,9,0)	575	#if !PERL_VERSION_ATLEAST (5,9,0)
538	Safefree (PL_retstack);	576	Safefree (PL_retstack);
539	#endif	577	#endif
540	}	578	}
541		579
		580	static size_t
		581	coro_rss (struct coro *coro)
		582	{
		583	size_t rss = sizeof (coro);
		584
		585	if (coro->mainstack)
		586	{
		587	if (coro->flags & CF_RUNNING)
		588	{
		589	#define VAR(name,type)coro->name = PL_ ## name;
		590	# include "state.h"
		591	#undef VAR
		592	}
		593
		594	rss += sizeof (coro->curstackinfo);
		595	rss += sizeof (struct xpvav) + (1 + AvFILL (coro->curstackinfo->si_stack)) * sizeof (SV *);
		596	rss += (coro->curstackinfo->si_cxmax + 1) * sizeof (PERL_CONTEXT);
		597	rss += sizeof (struct xpvav) + (1 + AvFILL (coro->curstack)) * sizeof (SV *);
		598	rss += coro->tmps_max * sizeof (SV *);
		599	rss += (coro->markstack_max - coro->markstack_ptr) * sizeof (I32);
		600	rss += coro->scopestack_max * sizeof (I32);
		601	rss += coro->savestack_max * sizeof (ANY);
		602
		603	#if !PERL_VERSION_ATLEAST (5,9,0)
		604	rss += coro->retstack_max * sizeof (OP *);
		605	#endif
		606	}
		607
		608	return rss;
		609	}
		610
		611	/ coroutine stack handling **********************************************/
		612
542	static void	613	static void
543	setup_coro (struct coro *coro)	614	setup_coro (pTHX_ struct coro *coro)
544	{	615	{
545	/*	616	/*
546	* emulate part of the perl startup here.	617	* emulate part of the perl startup here.
547	*/	618	*/
548
549	coro_init_stacks ();	619	coro_init_stacks (aTHX);
		620
		621	PL_runops = RUNOPS_DEFAULT;
		622	PL_curcop = &PL_compiling;
		623	PL_in_eval = EVAL_NULL;
		624	PL_comppad = 0;
		625	PL_curpm = 0;
		626	PL_localizing = 0;
		627	PL_dirty = 0;
		628	PL_restartop = 0;
550		629
551	{	630	{
552	dSP;	631	dSP;
553	LOGOP myop;	632	LOGOP myop;
554		633
555	/PL_curcop = 0;/
556	PL_in_eval = 0;
557	SvREFCNT_dec (GvAV (PL_defgv));	634	SvREFCNT_dec (GvAV (PL_defgv));
558	GvAV (PL_defgv) = coro->args; coro->args = 0;	635	GvAV (PL_defgv) = coro->args; coro->args = 0;
559
560	SPAGAIN;
561		636
562	Zero (&myop, 1, LOGOP);	637	Zero (&myop, 1, LOGOP);
563	myop.op_next = Nullop;	638	myop.op_next = Nullop;
564	myop.op_flags = OPf_WANT_VOID;	639	myop.op_flags = OPf_WANT_VOID;
565		640
		641	PUSHMARK (SP);
		642	XPUSHs (av_shift (GvAV (PL_defgv)));
		643	PUTBACK;
566	PL_op = (OP *)&myop;	644	PL_op = (OP *)&myop;
567
568	PUSHMARK (SP);
569	PUSHMARK (SP);
570	XPUSHs ((SV *)get_cv ("Coro::State::coro_init", FALSE));
571	PUTBACK;
572	PL_op = PL_ppaddr[OP_ENTERSUB](aTHX);	645	PL_op = PL_ppaddr[OP_ENTERSUB](aTHX);
573	SPAGAIN;	646	SPAGAIN;
574
575	ENTER; /* necessary e.g. for dounwind */
576	}	647	}
		648
		649	ENTER; /* necessary e.g. for dounwind */
577	}	650	}
578		651
579	static void	652	static void
580	free_coro_mortal ()	653	free_coro_mortal (pTHX)
581	{	654	{
582	if (coro_mortal)	655	if (coro_mortal)
583	{	656	{
584	SvREFCNT_dec (coro_mortal);	657	SvREFCNT_dec (coro_mortal);
585	coro_mortal = 0;	658	coro_mortal = 0;
586	}	659	}
587	}	660	}
588		661
		662	static int
		663	runops_trace (pTHX)
		664	{
		665	COP *oldcop = 0;
		666	int oldcxix = -2;
		667	struct coro coro = SvSTATE (coro_current); / trace cctx is tied to specific coro */
		668	coro_cctx *cctx = coro->cctx;
		669
		670	while ((PL_op = CALL_FPTR (PL_op->op_ppaddr) (aTHX)))
		671	{
		672	PERL_ASYNC_CHECK ();
		673
		674	if (PL_op->op_type == OP_LEAVESUB && cctx->flags & CC_TRACE_SUB)
		675	{
		676	PERL_CONTEXT *cx = &cxstack[cxstack_ix];
		677	SV bot, top;
		678	AV av = newAV (); / return values */
		679	SV **cb;
		680	runops_proc_t old_runops = PL_runops;
		681	dSP;
		682	ENTER;
		683	SAVETMPS;
		684	EXTEND (SP, 3);
		685	PL_runops = RUNOPS_DEFAULT;
		686
		687	GV *gv = CvGV (cx->blk_sub.cv);
		688	SV *fullname = sv_2mortal (newSV (0));
		689	if (isGV (gv))
		690	gv_efullname3 (fullname, gv, 0);
		691
		692	bot = PL_stack_base + cx->blk_oldsp + 1;
		693	top = cx->blk_gimme == G_ARRAY ? SP + 1
		694	: cx->blk_gimme == G_SCALAR ? bot + 1
		695	: bot;
		696
		697	while (bot < top)
		698	av_push (av, SvREFCNT_inc (*bot++));
		699
		700	PUSHMARK (SP);
		701	PUSHs (&PL_sv_no);
		702	PUSHs (fullname);
		703	PUSHs (sv_2mortal (newRV_noinc ((SV *)av)));
		704	PUTBACK;
		705	cb = hv_fetch ((HV *)SvRV (coro_current), "_trace_sub_cb", sizeof ("_trace_sub_cb") - 1, 0);
		706	if (cb) call_sv (*cb, G_KEEPERR \| G_EVAL \| G_VOID \| G_DISCARD);
		707	SPAGAIN;
		708
		709	FREETMPS;
		710	LEAVE;
		711	PL_runops = old_runops;
		712	}
		713
		714	if (oldcop != PL_curcop)
		715	{
		716	oldcop = PL_curcop;
		717
		718	if (PL_curcop != &PL_compiling)
		719	{
		720	SV **cb;
		721	runops_proc_t old_runops = PL_runops;
		722	dSP;
		723	ENTER;
		724	SAVETMPS;
		725	EXTEND (SP, 3);
		726	PL_runops = RUNOPS_DEFAULT;
		727
		728	if (oldcxix != cxstack_ix && cctx->flags & CC_TRACE_SUB)
		729	{
		730	PERL_CONTEXT *cx = &cxstack[cxstack_ix];
		731
		732	if (CxTYPE (cx) == CXt_SUB && oldcxix < cxstack_ix)
		733	{
		734	GV *gv = CvGV (cx->blk_sub.cv);
		735	SV *fullname = sv_2mortal (newSV (0));
		736	if (isGV (gv))
		737	gv_efullname3 (fullname, gv, 0);
		738
		739	PUSHMARK (SP);
		740	PUSHs (&PL_sv_yes);
		741	PUSHs (fullname);
		742	PUSHs (cx->blk_sub.hasargs ? sv_2mortal (newRV_inc ((SV *)cx->blk_sub.argarray)) : &PL_sv_undef);
		743	PUTBACK;
		744	cb = hv_fetch ((HV *)SvRV (coro_current), "_trace_sub_cb", sizeof ("_trace_sub_cb") - 1, 0);
		745	if (cb) call_sv (*cb, G_KEEPERR \| G_EVAL \| G_VOID \| G_DISCARD);
		746	SPAGAIN;
		747	}
		748
		749	oldcxix = cxstack_ix;
		750	}
		751
		752	if (cctx->flags & CC_TRACE_LINE)
		753	{
		754	PUSHMARK (SP);
		755	PUSHs (sv_2mortal (newSVpv (OutCopFILE (oldcop), 0)));
		756	PUSHs (sv_2mortal (newSViv (CopLINE (oldcop))));
		757	PUTBACK;
		758	cb = hv_fetch ((HV *)SvRV (coro_current), "_trace_line_cb", sizeof ("_trace_line_cb") - 1, 0);
		759	if (cb) call_sv (*cb, G_KEEPERR \| G_EVAL \| G_VOID \| G_DISCARD);
		760	SPAGAIN;
		761	}
		762
		763	FREETMPS;
		764	LEAVE;
		765	PL_runops = old_runops;
		766	}
		767	}
		768	}
		769
		770	TAINT_NOT;
		771	return 0;
		772	}
		773
		774	/* inject a fake call to Coro::State::_cctx_init into the execution */
		775	/* _cctx_init should be careful, as it could be called at almost any time */
		776	/* during execution of a perl program */
589	static void NOINLINE	777	static void NOINLINE
590	prepare_cctx (coro_stack *cctx)	778	prepare_cctx (pTHX_ coro_cctx *cctx)
591	{	779	{
592	dSP;	780	dSP;
593	LOGOP myop;	781	LOGOP myop;
594		782
		783	PL_top_env = &PL_start_env;
		784
		785	if (cctx->flags & CC_TRACE)
		786	PL_runops = runops_trace;
		787
595	Zero (&myop, 1, LOGOP);	788	Zero (&myop, 1, LOGOP);
596	myop.op_next = PL_op;	789	myop.op_next = PL_op;
597	myop.op_flags = OPf_WANT_VOID;	790	myop.op_flags = OPf_WANT_VOID \| OPf_STACKED;
598
599	sv_setiv (get_sv ("Coro::State::cctx_stack", FALSE), PTR2IV (cctx));
600		791
601	PUSHMARK (SP);	792	PUSHMARK (SP);
		793	EXTEND (SP, 2);
		794	PUSHs (sv_2mortal (newSViv (PTR2IV (cctx))));
602	XPUSHs ((SV *)get_cv ("Coro::State::cctx_init", FALSE));	795	PUSHs ((SV *)get_cv ("Coro::State::_cctx_init", FALSE));
603	PUTBACK;	796	PUTBACK;
		797	PL_op = (OP *)&myop;
604	PL_restartop = PL_ppaddr[OP_ENTERSUB](aTHX);	798	PL_op = PL_ppaddr[OP_ENTERSUB](aTHX);
605	SPAGAIN;	799	SPAGAIN;
606	}	800	}
607		801
		802	/*
		803	* this is a _very_ stripped down perl interpreter ;)
		804	*/
608	static void	805	static void
609	coro_run (void *arg)	806	coro_run (void *arg)
610	{	807	{
		808	dTHX;
		809
611	/* coro_run is the alternative epilogue of transfer() */	810	/* coro_run is the alternative tail of transfer(), so unlock here. */
612	UNLOCK;	811	UNLOCK;
613		812
		813	/* we now skip the entersub that lead to transfer() */
		814	PL_op = PL_op->op_next;
		815
		816	/* inject a fake subroutine call to cctx_init */
		817	prepare_cctx (aTHX_ (coro_cctx *)arg);
		818
		819	/* somebody or something will hit me for both perl_run and PL_restartop */
		820	PL_restartop = PL_op;
		821	perl_run (PL_curinterp);
		822
614	/*	823	/*
615	* this is a _very_ stripped down perl interpreter ;)	824	* If perl-run returns we assume exit() was being called or the coro
		825	* fell off the end, which seems to be the only valid (non-bug)
		826	* reason for perl_run to return. We try to exit by jumping to the
		827	* bootstrap-time "top" top_env, as we cannot restore the "main"
		828	* coroutine as Coro has no such concept
616	*/	829	*/
617	PL_top_env = &PL_start_env;	830	PL_top_env = main_top_env;
618	/* inject call to cctx_init */	831	JMPENV_JUMP (2); /* I do not feel well about the hardcoded 2 at all */
619	prepare_cctx ((coro_stack *)arg);
620
621	/* somebody will hit me for both perl_run and PL_restartop */
622	perl_run (PL_curinterp);
623
624	fputs ("FATAL: C coroutine fell over the edge of the world, aborting.\n", stderr);
625	abort ();
626	}	832	}
627		833
628	static coro_stack *	834	static coro_cctx *
629	stack_new ()	835	cctx_new ()
630	{	836	{
631	coro_stack *stack;	837	coro_cctx *cctx;
		838	void *stack_start;
		839	size_t stack_size;
632		840
		841	++cctx_count;
		842
633	New (0, stack, 1, coro_stack);	843	Newz (0, cctx, 1, coro_cctx);
634		844
635	#if HAVE_MMAP	845	#if HAVE_MMAP
636		846
637	stack->ssize = ((STACKSIZE * sizeof (long) + PAGESIZE - 1) / PAGESIZE + STACKGUARD) * PAGESIZE;	847	cctx->ssize = ((coro_stacksize * sizeof (long) + PAGESIZE - 1) / PAGESIZE + CORO_STACKGUARD) * PAGESIZE;
638	/* mmap suppsedly does allocate-on-write for us */	848	/* mmap supposedly does allocate-on-write for us */
639	stack->sptr = mmap (0, stack->ssize, PROT_EXEC\|PROT_READ\|PROT_WRITE, MAP_PRIVATE\|MAP_ANONYMOUS, 0, 0);	849	cctx->sptr = mmap (0, cctx->ssize, PROT_EXEC\|PROT_READ\|PROT_WRITE, MAP_PRIVATE\|MAP_ANONYMOUS, 0, 0);
640		850
641	if (stack->sptr == (void *)-1)	851	if (cctx->sptr != (void *)-1)
642	{
643	perror ("FATAL: unable to mmap stack for coroutine");
644	_exit (EXIT_FAILURE);
645	}	852	{
646
647	# if STACKGUARD	853	# if CORO_STACKGUARD
648	mprotect (stack->sptr, STACKGUARD * PAGESIZE, PROT_NONE);	854	mprotect (cctx->sptr, CORO_STACKGUARD * PAGESIZE, PROT_NONE);
649	# endif	855	# endif
650		856	stack_start = CORO_STACKGUARD * PAGESIZE + (char *)cctx->sptr;
651	#else	857	stack_size = cctx->ssize - CORO_STACKGUARD * PAGESIZE;
652		858	cctx->flags \|= CC_MAPPED;
653	stack->ssize = STACKSIZE * (long)sizeof (long);
654	New (0, stack->sptr, STACKSIZE, long);
655
656	if (!stack->sptr)
657	{	859	}
		860	else
		861	#endif
		862	{
		863	cctx->ssize = coro_stacksize * (long)sizeof (long);
		864	New (0, cctx->sptr, coro_stacksize, long);
		865
		866	if (!cctx->sptr)
		867	{
658	perror (stderr, "FATAL: unable to malloc stack for coroutine");	868	perror ("FATAL: unable to allocate stack for coroutine");
659	_exit (EXIT_FAILURE);	869	_exit (EXIT_FAILURE);
660	}	870	}
661		871
662	#endif	872	stack_start = cctx->sptr;
		873	stack_size = cctx->ssize;
		874	}
663		875
		876	REGISTER_STACK (cctx, (char )stack_start, (char )stack_start + stack_size);
664	coro_create (&stack->cctx, coro_run, (void *)stack, stack->sptr, stack->ssize);	877	coro_create (&cctx->cctx, coro_run, (void *)cctx, stack_start, stack_size);
665		878
666	return stack;	879	return cctx;
667	}	880	}
668		881
669	static void	882	static void
670	stack_free (coro_stack *stack)	883	cctx_destroy (coro_cctx *cctx)
671	{	884	{
672	if (!stack)	885	if (!cctx)
673	return;	886	return;
674		887
		888	--cctx_count;
		889
		890	#if CORO_USE_VALGRIND
		891	VALGRIND_STACK_DEREGISTER (cctx->valgrind_id);
		892	#endif
		893
675	#if HAVE_MMAP	894	#if HAVE_MMAP
		895	if (cctx->flags & CC_MAPPED)
676	munmap (stack->sptr, stack->ssize);	896	munmap (cctx->sptr, cctx->ssize);
677	#else	897	else
		898	#endif
678	Safefree (stack->sptr);	899	Safefree (cctx->sptr);
679	#endif
680		900
681	Safefree (stack);	901	Safefree (cctx);
682	}	902	}
683		903
684	static coro_stack *stack_first;
685	static int cctx_count, cctx_idle;
686
687	static coro_stack *	904	static coro_cctx *
688	stack_get ()	905	cctx_get (pTHX)
689	{	906	{
690	coro_stack *stack;	907	while (cctx_first)
691
692	if (stack_first)
693	{	908	{
		909	coro_cctx *cctx = cctx_first;
		910	cctx_first = cctx->next;
694	--cctx_idle;	911	--cctx_idle;
695	stack = stack_first;	912
696	stack_first = stack->next;	913	if (cctx->ssize >= coro_stacksize && !(cctx->flags & CC_NOREUSE))
697	}	914	return cctx;
698	else	915
699	{	916	cctx_destroy (cctx);
700	++cctx_count;
701	stack = stack_new ();
702	PL_op = PL_op->op_next;
703	}	917	}
704		918
705	return stack;	919	return cctx_new ();
706	}	920	}
707		921
708	static void	922	static void
709	stack_put (coro_stack *stack)	923	cctx_put (coro_cctx *cctx)
710	{	924	{
		925	/* free another cctx if overlimit */
		926	if (cctx_idle >= MAX_IDLE_CCTX)
		927	{
		928	coro_cctx *first = cctx_first;
		929	cctx_first = first->next;
		930	--cctx_idle;
		931
		932	cctx_destroy (first);
		933	}
		934
711	++cctx_idle;	935	++cctx_idle;
712	stack->next = stack_first;	936	cctx->next = cctx_first;
713	stack_first = stack;	937	cctx_first = cctx;
714	}	938	}
		939
		940	/ coroutine switching ***************************************************/
715		941
716	/* never call directly, always through the coro_state_transfer global variable */	942	/* never call directly, always through the coro_state_transfer global variable */
717	static void NOINLINE	943	static void NOINLINE
718	transfer (struct coro prev, struct coro next, int flags)	944	transfer (pTHX_ struct coro prev, struct coro next)
719	{	945	{
720	dSTACKLEVEL;	946	dSTACKLEVEL;
721		947
722	/* sometimes transfer is only called to set idle_sp */	948	/* sometimes transfer is only called to set idle_sp */
723	if (flags == TRANSFER_SET_STACKLEVEL)	949	if (!next)
		950	{
724	((coro_stack *)prev)->idle_sp = STACKLEVEL;	951	((coro_cctx *)prev)->idle_sp = STACKLEVEL;
		952	assert (((coro_cctx )prev)->idle_te = PL_top_env); / just for the side-effect when asserts are enabled */
		953	}
725	else if (prev != next)	954	else if (prev != next)
726	{	955	{
727	coro_stack *prev__stack;	956	coro_cctx *prev__cctx;
		957
		958	if (prev->flags & CF_NEW)
		959	{
		960	/* create a new empty context */
		961	Newz (0, prev->cctx, 1, coro_cctx);
		962	prev->flags &= ~CF_NEW;
		963	prev->flags \|= CF_RUNNING;
		964	}
		965
		966	/TODO: must not croak here /
		967	if (!prev->flags & CF_RUNNING)
		968	croak ("Coro::State::transfer called with non-running prev Coro::State, but can only transfer from running states");
		969
		970	if (next->flags & CF_RUNNING)
		971	croak ("Coro::State::transfer called with running next Coro::State, but can only transfer to inactive states");
		972
		973	if (next->flags & CF_DESTROYED)
		974	croak ("Coro::State::transfer called with destroyed next Coro::State, but can only transfer to inactive states");
		975
		976	prev->flags &= ~CF_RUNNING;
		977	next->flags \|= CF_RUNNING;
728		978
729	LOCK;	979	LOCK;
730		980
731	if (next->mainstack)	981	if (next->flags & CF_NEW)
732	{	982	{
733	/* coroutine already started */	983	/* need to start coroutine */
734	SAVE (prev, flags);	984	next->flags &= ~CF_NEW;
735	LOAD (next);	985	/* first get rid of the old state */
		986	save_perl (aTHX_ prev);
		987	/* setup coroutine call */
		988	setup_coro (aTHX_ next);
736	}	989	}
737	else	990	else
738	{	991	{
739	/* need to start coroutine */	992	/* coroutine already started */
740	/* first get rid of the old state */	993	save_perl (aTHX_ prev);
741	SAVE (prev, -1);	994	load_perl (aTHX_ next);
742	/* setup coroutine call */
743	setup_coro (next);
744	/* need a stack */
745	next->stack = 0;
746	}	995	}
747		996
748	if (!prev->stack)
749	/* create a new empty context */
750	Newz (0, prev->stack, 1, coro_stack);
751
752	prev__stack = prev->stack;	997	prev__cctx = prev->cctx;
753		998
754	/* possibly "free" the stack */	999	/* possibly "free" the cctx */
755	if (prev__stack->idle_sp == STACKLEVEL)	1000	if (prev__cctx->idle_sp == STACKLEVEL && !(prev__cctx->flags & CC_TRACE))
756	{	1001	{
757	stack_put (prev__stack);	1002	/* I assume that STACKLEVEL is a stronger indicator than PL_top_env changes */
		1003	assert (("ERROR: current top_env must equal previous top_env", PL_top_env == prev__cctx->idle_te));
		1004
758	prev->stack = 0;	1005	prev->cctx = 0;
		1006
		1007	cctx_put (prev__cctx);
759	}	1008	}
760		1009
761	if (!next->stack)	1010	if (!next->cctx)
762	next->stack = stack_get ();	1011	next->cctx = cctx_get (aTHX);
763		1012
764	if (prev__stack != next->stack)	1013	if (prev__cctx != next->cctx)
765	{	1014	{
766	prev__stack->top_env = PL_top_env;	1015	prev__cctx->top_env = PL_top_env;
767	PL_top_env = next->stack->top_env;	1016	PL_top_env = next->cctx->top_env;
768	coro_transfer (&prev__stack->cctx, &next->stack->cctx);	1017	coro_transfer (&prev__cctx->cctx, &next->cctx->cctx);
769	}	1018	}
770		1019
771	free_coro_mortal ();	1020	free_coro_mortal (aTHX);
772
773	UNLOCK;	1021	UNLOCK;
774	}	1022	}
775	}	1023	}
776		1024
777	struct transfer_args	1025	struct transfer_args
778	{	1026	{
779	struct coro prev, next;	1027	struct coro prev, next;
780	int flags;
781	};	1028	};
782		1029
783	#define TRANSFER(ta) transfer ((ta).prev, (ta).next, (ta).flags)	1030	#define TRANSFER(ta) transfer (aTHX_ (ta).prev, (ta).next)
784		1031
		1032	/ high level stuff ******************************************************/
		1033
785	static void	1034	static int
786	coro_state_destroy (struct coro *coro)	1035	coro_state_destroy (pTHX_ struct coro *coro)
787	{	1036	{
788	if (coro->refcnt--)	1037	if (coro->flags & CF_DESTROYED)
789	return;	1038	return 0;
		1039
		1040	coro->flags \|= CF_DESTROYED;
		1041
		1042	if (coro->flags & CF_READY)
		1043	{
		1044	/* reduce nready, as destroying a ready coro effectively unreadies it */
		1045	/* alternative: look through all ready queues and remove the coro */
		1046	LOCK;
		1047	--coro_nready;
		1048	UNLOCK;
		1049	}
		1050	else
		1051	coro->flags \|= CF_READY; /* make sure it is NOT put into the readyqueue */
790		1052
791	if (coro->mainstack && coro->mainstack != main_mainstack)	1053	if (coro->mainstack && coro->mainstack != main_mainstack)
792	{	1054	{
793	struct coro temp;	1055	struct coro temp;
794		1056
795	SAVE ((&temp), TRANSFER_SAVE_ALL);	1057	assert (!(coro->flags & CF_RUNNING));
796	LOAD (coro);
797		1058
		1059	Zero (&temp, 1, struct coro);
		1060	temp.save = CORO_SAVE_ALL;
		1061
		1062	if (coro->flags & CF_RUNNING)
		1063	croak ("FATAL: tried to destroy currently running coroutine");
		1064
		1065	save_perl (aTHX_ &temp);
		1066	load_perl (aTHX_ coro);
		1067
798	coro_destroy_stacks ();	1068	coro_destroy_stacks (aTHX);
799		1069
800	LOAD ((&temp)); /* this will get rid of defsv etc.. */	1070	load_perl (aTHX_ &temp); /* this will get rid of defsv etc.. */
801		1071
802	coro->mainstack = 0;	1072	coro->mainstack = 0;
803	}	1073	}
804		1074
805	stack_free (coro->stack);	1075	cctx_destroy (coro->cctx);
806	SvREFCNT_dec (coro->args);	1076	SvREFCNT_dec (coro->args);
807	Safefree (coro);	1077
		1078	if (coro->next) coro->next->prev = coro->prev;
		1079	if (coro->prev) coro->prev->next = coro->next;
		1080	if (coro == coro_first) coro_first = coro->next;
		1081
		1082	return 1;
808	}	1083	}
809		1084
810	static int	1085	static int
811	coro_state_clear (pTHX_ SV sv, MAGIC mg)	1086	coro_state_free (pTHX_ SV sv, MAGIC mg)
812	{	1087	{
813	struct coro coro = (struct coro )mg->mg_ptr;	1088	struct coro coro = (struct coro )mg->mg_ptr;
814	mg->mg_ptr = 0;	1089	mg->mg_ptr = 0;
815		1090
		1091	coro->hv = 0;
		1092
		1093	if (--coro->refcnt < 0)
		1094	{
816	coro_state_destroy (coro);	1095	coro_state_destroy (aTHX_ coro);
		1096	Safefree (coro);
		1097	}
817		1098
818	return 0;	1099	return 0;
819	}	1100	}
820		1101
821	static int	1102	static int
…		…
828	return 0;	1109	return 0;
829	}	1110	}
830		1111
831	static MGVTBL coro_state_vtbl = {	1112	static MGVTBL coro_state_vtbl = {
832	0, 0, 0, 0,	1113	0, 0, 0, 0,
833	coro_state_clear,	1114	coro_state_free,
834	0,	1115	0,
835	#ifdef MGf_DUP	1116	#ifdef MGf_DUP
836	coro_state_dup,	1117	coro_state_dup,
837	#else	1118	#else
838	# define MGf_DUP 0	1119	# define MGf_DUP 0
839	#endif	1120	#endif
840	};	1121	};
841		1122
842	static struct coro *
843	SvSTATE (SV *coro)
844	{
845	HV *stash;
846	MAGIC *mg;
847
848	if (SvROK (coro))
849	coro = SvRV (coro);
850
851	stash = SvSTASH (coro);
852	if (stash != coro_stash && stash != coro_state_stash)
853	{
854	/* very slow, but rare, check */
855	if (!sv_derived_from (sv_2mortal (newRV_inc (coro)), "Coro::State"))
856	croak ("Coro::State object required");
857	}
858
859	mg = SvMAGIC (coro);
860	assert (mg->mg_type == PERL_MAGIC_ext);
861	return (struct coro *)mg->mg_ptr;
862	}
863
864	static void	1123	static void
865	prepare_transfer (struct transfer_args ta, SV prev, SV *next, int flags)	1124	prepare_transfer (pTHX_ struct transfer_args ta, SV prev_sv, SV *next_sv)
866	{	1125	{
867	ta->prev = SvSTATE (prev);	1126	ta->prev = SvSTATE (prev_sv);
868	ta->next = SvSTATE (next);	1127	ta->next = SvSTATE (next_sv);
869	ta->flags = flags;
870	}	1128	}
871		1129
872	static void	1130	static void
873	api_transfer (SV prev, SV next, int flags)	1131	api_transfer (SV prev_sv, SV next_sv)
874	{	1132	{
875	dTHX;	1133	dTHX;
876	struct transfer_args ta;	1134	struct transfer_args ta;
877		1135
878	prepare_transfer (&ta, prev, next, flags);	1136	prepare_transfer (aTHX_ &ta, prev_sv, next_sv);
879	TRANSFER (ta);	1137	TRANSFER (ta);
880	}	1138	}
881		1139
		1140	static int
		1141	api_save (SV *coro_sv, int new_save)
		1142	{
		1143	dTHX;
		1144	struct coro *coro = SvSTATE (coro_sv);
		1145	int old_save = coro->save;
		1146
		1147	if (new_save >= 0)
		1148	coro->save = new_save;
		1149
		1150	return old_save;
		1151	}
		1152
882	/ Coro ******************************************************************/	1153	/ Coro ******************************************************************/
883		1154
884	#define PRIO_MAX 3
885	#define PRIO_HIGH 1
886	#define PRIO_NORMAL 0
887	#define PRIO_LOW -1
888	#define PRIO_IDLE -3
889	#define PRIO_MIN -4
890
891	/* for Coro.pm */
892	static GV coro_current, coro_idle;
893	static AV *coro_ready [PRIO_MAX-PRIO_MIN+1];
894	static int coro_nready;
895
896	static void	1155	static void
897	coro_enq (SV *sv)	1156	coro_enq (pTHX_ SV *coro_sv)
898	{	1157	{
899	int prio;
900
901	if (SvTYPE (sv) != SVt_PVHV)
902	croak ("Coro::ready tried to enqueue something that is not a coroutine");
903
904	prio = SvSTATE (sv)->prio;
905
906	av_push (coro_ready [prio - PRIO_MIN], sv);	1158	av_push (coro_ready [SvSTATE (coro_sv)->prio - PRIO_MIN], coro_sv);
907	coro_nready++;
908	}	1159	}
909		1160
910	static SV *	1161	static SV *
911	coro_deq (int min_prio)	1162	coro_deq (pTHX_ int min_prio)
912	{	1163	{
913	int prio = PRIO_MAX - PRIO_MIN;	1164	int prio = PRIO_MAX - PRIO_MIN;
914		1165
915	min_prio -= PRIO_MIN;	1166	min_prio -= PRIO_MIN;
916	if (min_prio < 0)	1167	if (min_prio < 0)
917	min_prio = 0;	1168	min_prio = 0;
918		1169
919	for (prio = PRIO_MAX - PRIO_MIN + 1; --prio >= min_prio; )	1170	for (prio = PRIO_MAX - PRIO_MIN + 1; --prio >= min_prio; )
920	if (AvFILLp (coro_ready [prio]) >= 0)	1171	if (AvFILLp (coro_ready [prio]) >= 0)
921	{
922	coro_nready--;
923	return av_shift (coro_ready [prio]);	1172	return av_shift (coro_ready [prio]);
924	}
925		1173
926	return 0;	1174	return 0;
927	}	1175	}
928		1176
		1177	static int
		1178	api_ready (SV *coro_sv)
		1179	{
		1180	dTHX;
		1181	struct coro *coro;
		1182
		1183	if (SvROK (coro_sv))
		1184	coro_sv = SvRV (coro_sv);
		1185
		1186	coro = SvSTATE (coro_sv);
		1187
		1188	if (coro->flags & CF_READY)
		1189	return 0;
		1190
		1191	coro->flags \|= CF_READY;
		1192
		1193	LOCK;
		1194	coro_enq (aTHX_ SvREFCNT_inc (coro_sv));
		1195	++coro_nready;
		1196	UNLOCK;
		1197
		1198	return 1;
		1199	}
		1200
		1201	static int
		1202	api_is_ready (SV *coro_sv)
		1203	{
		1204	dTHX;
		1205	return !!(SvSTATE (coro_sv)->flags & CF_READY);
		1206	}
		1207
929	static void	1208	static void
930	api_ready (SV *coro)	1209	prepare_schedule (pTHX_ struct transfer_args *ta)
931	{	1210	{
932	dTHX;	1211	SV prev_sv, next_sv;
933		1212
934	if (SvROK (coro))	1213	for (;;)
935	coro = SvRV (coro);	1214	{
		1215	LOCK;
		1216	next_sv = coro_deq (aTHX_ PRIO_MIN);
		1217
		1218	/* nothing to schedule: call the idle handler */
		1219	if (!next_sv)
		1220	{
		1221	dSP;
		1222	UNLOCK;
		1223
		1224	ENTER;
		1225	SAVETMPS;
		1226
		1227	PUSHMARK (SP);
		1228	PUTBACK;
		1229	call_sv (get_sv ("Coro::idle", FALSE), G_DISCARD);
		1230
		1231	FREETMPS;
		1232	LEAVE;
		1233	continue;
		1234	}
		1235
		1236	ta->next = SvSTATE (next_sv);
		1237
		1238	/* cannot transfer to destroyed coros, skip and look for next */
		1239	if (ta->next->flags & CF_DESTROYED)
		1240	{
		1241	UNLOCK;
		1242	SvREFCNT_dec (next_sv);
		1243	/* coro_nready is already taken care of by destroy */
		1244	continue;
		1245	}
		1246
		1247	--coro_nready;
		1248	UNLOCK;
		1249	break;
		1250	}
		1251
		1252	/* free this only after the transfer */
		1253	prev_sv = SvRV (coro_current);
		1254	SvRV_set (coro_current, next_sv);
		1255	ta->prev = SvSTATE (prev_sv);
		1256
		1257	assert (ta->next->flags & CF_READY);
		1258	ta->next->flags &= ~CF_READY;
936		1259
937	LOCK;	1260	LOCK;
938	coro_enq (SvREFCNT_inc (coro));	1261	free_coro_mortal (aTHX);
		1262	coro_mortal = prev_sv;
939	UNLOCK;	1263	UNLOCK;
940	}	1264	}
941		1265
942	static void	1266	static void
943	prepare_schedule (struct transfer_args *ta)
944	{
945	SV current, prev, *next;
946
947	current = GvSV (coro_current);
948
949	for (;;)
950	{
951	LOCK;
952	next = coro_deq (PRIO_MIN);
953	UNLOCK;
954
955	if (next)
956	break;
957
958	{
959	dSP;
960
961	ENTER;
962	SAVETMPS;
963
964	PUSHMARK (SP);
965	PUTBACK;
966	call_sv (GvSV (coro_idle), G_DISCARD);
967
968	FREETMPS;
969	LEAVE;
970	}
971	}
972
973	prev = SvRV (current);
974	SvRV (current) = next;
975
976	/* free this only after the transfer */
977	LOCK;
978	free_coro_mortal ();
979	UNLOCK;
980	coro_mortal = prev;
981
982	ta->prev = SvSTATE (prev);
983	ta->next = SvSTATE (next);
984	ta->flags = TRANSFER_SAVE_ALL;
985	}
986
987	static void
988	prepare_cede (struct transfer_args *ta)	1267	prepare_cede (pTHX_ struct transfer_args *ta)
989	{	1268	{
990	LOCK;	1269	api_ready (coro_current);
991	coro_enq (SvREFCNT_inc (SvRV (GvSV (coro_current))));
992	UNLOCK;
993
994	prepare_schedule (ta);	1270	prepare_schedule (aTHX_ ta);
		1271	}
		1272
		1273	static int
		1274	prepare_cede_notself (pTHX_ struct transfer_args *ta)
		1275	{
		1276	if (coro_nready)
		1277	{
		1278	SV *prev = SvRV (coro_current);
		1279	prepare_schedule (aTHX_ ta);
		1280	api_ready (prev);
		1281	return 1;
		1282	}
		1283	else
		1284	return 0;
995	}	1285	}
996		1286
997	static void	1287	static void
998	api_schedule (void)	1288	api_schedule (void)
999	{	1289	{
1000	dTHX;	1290	dTHX;
1001	struct transfer_args ta;	1291	struct transfer_args ta;
1002		1292
1003	prepare_schedule (&ta);	1293	prepare_schedule (aTHX_ &ta);
1004	TRANSFER (ta);	1294	TRANSFER (ta);
1005	}	1295	}
1006		1296
1007	static void	1297	static int
1008	api_cede (void)	1298	api_cede (void)
1009	{	1299	{
1010	dTHX;	1300	dTHX;
1011	struct transfer_args ta;	1301	struct transfer_args ta;
1012		1302
1013	prepare_cede (&ta);	1303	prepare_cede (aTHX_ &ta);
		1304
		1305	if (ta.prev != ta.next)
		1306	{
1014	TRANSFER (ta);	1307	TRANSFER (ta);
		1308	return 1;
		1309	}
		1310	else
		1311	return 0;
		1312	}
		1313
		1314	static int
		1315	api_cede_notself (void)
		1316	{
		1317	dTHX;
		1318	struct transfer_args ta;
		1319
		1320	if (prepare_cede_notself (aTHX_ &ta))
		1321	{
		1322	TRANSFER (ta);
		1323	return 1;
		1324	}
		1325	else
		1326	return 0;
1015	}	1327	}
1016		1328
1017	MODULE = Coro::State PACKAGE = Coro::State	1329	MODULE = Coro::State PACKAGE = Coro::State
1018		1330
1019	PROTOTYPES: DISABLE	1331	PROTOTYPES: DISABLE
…		…
1025	#endif	1337	#endif
1026	BOOT_PAGESIZE;	1338	BOOT_PAGESIZE;
1027		1339
1028	coro_state_stash = gv_stashpv ("Coro::State", TRUE);	1340	coro_state_stash = gv_stashpv ("Coro::State", TRUE);
1029		1341
		1342	newCONSTSUB (coro_state_stash, "CC_TRACE" , newSViv (CC_TRACE));
		1343	newCONSTSUB (coro_state_stash, "CC_TRACE_SUB" , newSViv (CC_TRACE_SUB));
		1344	newCONSTSUB (coro_state_stash, "CC_TRACE_LINE", newSViv (CC_TRACE_LINE));
		1345	newCONSTSUB (coro_state_stash, "CC_TRACE_ALL" , newSViv (CC_TRACE_ALL));
		1346
1030	newCONSTSUB (coro_state_stash, "SAVE_DEFAV", newSViv (TRANSFER_SAVE_DEFAV));	1347	newCONSTSUB (coro_state_stash, "SAVE_DEFAV", newSViv (CORO_SAVE_DEFAV));
1031	newCONSTSUB (coro_state_stash, "SAVE_DEFSV", newSViv (TRANSFER_SAVE_DEFSV));	1348	newCONSTSUB (coro_state_stash, "SAVE_DEFSV", newSViv (CORO_SAVE_DEFSV));
1032	newCONSTSUB (coro_state_stash, "SAVE_ERRSV", newSViv (TRANSFER_SAVE_ERRSV));	1349	newCONSTSUB (coro_state_stash, "SAVE_ERRSV", newSViv (CORO_SAVE_ERRSV));
		1350	newCONSTSUB (coro_state_stash, "SAVE_IRSSV", newSViv (CORO_SAVE_IRSSV));
		1351	newCONSTSUB (coro_state_stash, "SAVE_DEFFH", newSViv (CORO_SAVE_DEFFH));
		1352	newCONSTSUB (coro_state_stash, "SAVE_DEF", newSViv (CORO_SAVE_DEF));
		1353	newCONSTSUB (coro_state_stash, "SAVE_ALL", newSViv (CORO_SAVE_ALL));
1033		1354
1034	main_mainstack = PL_mainstack;	1355	main_mainstack = PL_mainstack;
		1356	main_top_env = PL_top_env;
		1357
		1358	while (main_top_env->je_prev)
		1359	main_top_env = main_top_env->je_prev;
1035		1360
1036	coroapi.ver = CORO_API_VERSION;	1361	coroapi.ver = CORO_API_VERSION;
1037	coroapi.transfer = api_transfer;	1362	coroapi.transfer = api_transfer;
1038		1363
1039	assert (("PRIO_NORMAL must be 0", !PRIO_NORMAL));	1364	assert (("PRIO_NORMAL must be 0", !PRIO_NORMAL));
…		…
1047	HV *hv;	1372	HV *hv;
1048	int i;	1373	int i;
1049		1374
1050	Newz (0, coro, 1, struct coro);	1375	Newz (0, coro, 1, struct coro);
1051	coro->args = newAV ();	1376	coro->args = newAV ();
		1377	coro->save = CORO_SAVE_DEF;
		1378	coro->flags = CF_NEW;
1052		1379
		1380	if (coro_first) coro_first->prev = coro;
		1381	coro->next = coro_first;
		1382	coro_first = coro;
		1383
1053	hv = newHV ();	1384	coro->hv = hv = newHV ();
1054	sv_magicext ((SV )hv, 0, PERL_MAGIC_ext, &coro_state_vtbl, (char )coro, 0)->mg_flags \|= MGf_DUP;	1385	sv_magicext ((SV )hv, 0, PERL_MAGIC_ext, &coro_state_vtbl, (char )coro, 0)->mg_flags \|= MGf_DUP;
1055	RETVAL = sv_bless (newRV_noinc ((SV *)hv), gv_stashpv (klass, 1));	1386	RETVAL = sv_bless (newRV_noinc ((SV *)hv), gv_stashpv (klass, 1));
1056		1387
1057	for (i = 1; i < items; i++)	1388	for (i = 1; i < items; i++)
1058	av_push (coro->args, newSVsv (ST (i)));	1389	av_push (coro->args, newSVsv (ST (i)));
1059
1060	/coro->mainstack = 0; //actual work is done inside transfer /
1061	/coro->stack = 0;/
1062	}	1390	}
1063	OUTPUT:	1391	OUTPUT:
		1392	RETVAL
		1393
		1394	int
		1395	save (SV *coro, int new_save = -1)
		1396	CODE:
		1397	RETVAL = api_save (coro, new_save);
		1398	OUTPUT:
		1399	RETVAL
		1400
		1401	int
		1402	save_also (SV *coro_sv, int save_also)
		1403	CODE:
		1404	{
		1405	struct coro *coro = SvSTATE (coro_sv);
		1406	RETVAL = coro->save;
		1407	coro->save \|= save_also;
		1408	}
		1409	OUTPUT:
1064	RETVAL	1410	RETVAL
1065		1411
1066	void	1412	void
1067	_set_stacklevel (...)	1413	_set_stacklevel (...)
1068	ALIAS:	1414	ALIAS:
1069	Coro::State::transfer = 1	1415	Coro::State::transfer = 1
1070	Coro::schedule = 2	1416	Coro::schedule = 2
1071	Coro::cede = 3	1417	Coro::cede = 3
1072	Coro::Cont::yield = 4	1418	Coro::cede_notself = 4
1073	CODE:	1419	CODE:
1074	{	1420	{
1075	struct transfer_args ta;	1421	struct transfer_args ta;
1076		1422
1077	switch (ix)	1423	switch (ix)
1078	{	1424	{
1079	case 0:	1425	case 0:
1080	ta.prev = (struct coro )INT2PTR (coro_stack , SvIV (ST (0)));	1426	ta.prev = (struct coro )INT2PTR (coro_cctx , SvIV (ST (0)));
1081	ta.next = 0;	1427	ta.next = 0;
1082	ta.flags = TRANSFER_SET_STACKLEVEL;
1083	break;	1428	break;
1084		1429
1085	case 1:	1430	case 1:
1086	if (items != 3)	1431	if (items != 2)
1087	croak ("Coro::State::transfer(prev,next,flags) expects three arguments, not %d", items);	1432	croak ("Coro::State::transfer (prev,next) expects two arguments, not %d", items);
1088		1433
1089	prepare_transfer (&ta, ST (0), ST (1), SvIV (ST (2)));	1434	prepare_transfer (aTHX_ &ta, ST (0), ST (1));
1090	break;	1435	break;
1091		1436
1092	case 2:	1437	case 2:
1093	prepare_schedule (&ta);	1438	prepare_schedule (aTHX_ &ta);
1094	break;	1439	break;
1095		1440
1096	case 3:	1441	case 3:
1097	prepare_cede (&ta);	1442	prepare_cede (aTHX_ &ta);
1098	break;	1443	break;
1099		1444
1100	case 4:	1445	case 4:
1101	{	1446	if (!prepare_cede_notself (aTHX_ &ta))
1102	SV *yieldstack;	1447	XSRETURN_EMPTY;
1103	SV *sv;
1104	AV *defav = GvAV (PL_defgv);
1105		1448
1106	yieldstack = *hv_fetch (
1107	(HV *)SvRV (GvSV (coro_current)),
1108	"yieldstack", sizeof ("yieldstack") - 1,
1109	0
1110	);
1111
1112	/* set up @_ -- ugly */
1113	av_clear (defav);
1114	av_fill (defav, items - 1);
1115	while (items--)
1116	av_store (defav, items, SvREFCNT_inc (ST(items)));
1117
1118	sv = av_pop ((AV *)SvRV (yieldstack));
1119	ta.prev = SvSTATE (av_fetch ((AV )SvRV (sv), 0, 0));
1120	ta.next = SvSTATE (av_fetch ((AV )SvRV (sv), 1, 0));
1121	ta.flags = 0;
1122	SvREFCNT_dec (sv);
1123	}
1124	break;	1449	break;
1125
1126	}	1450	}
1127		1451
		1452	BARRIER;
1128	TRANSFER (ta);	1453	TRANSFER (ta);
1129	}
1130		1454
1131	void	1455	if (GIMME_V != G_VOID && ta.next != ta.prev)
1132	_clone_state_from (SV dst, SV src)	1456	XSRETURN_YES;
		1457	}
		1458
		1459	bool
		1460	_destroy (SV *coro_sv)
1133	CODE:	1461	CODE:
1134	{	1462	RETVAL = coro_state_destroy (aTHX_ SvSTATE (coro_sv));
1135	struct coro *coro_src = SvSTATE (src);	1463	OUTPUT:
1136		1464	RETVAL
1137	sv_unmagic (SvRV (dst), PERL_MAGIC_ext);
1138
1139	++coro_src->refcnt;
1140	sv_magicext (SvRV (dst), 0, PERL_MAGIC_ext, &coro_state_vtbl, (char *)coro_src, 0)->mg_flags \|= MGf_DUP;
1141	}
1142		1465
1143	void	1466	void
1144	_exit (code)	1467	_exit (code)
1145	int code	1468	int code
1146	PROTOTYPE: $	1469	PROTOTYPE: $
1147	CODE:	1470	CODE:
1148	_exit (code);	1471	_exit (code);
1149		1472
		1473	int
		1474	cctx_stacksize (int new_stacksize = 0)
		1475	CODE:
		1476	RETVAL = coro_stacksize;
		1477	if (new_stacksize)
		1478	coro_stacksize = new_stacksize;
		1479	OUTPUT:
		1480	RETVAL
		1481
		1482	int
		1483	cctx_count ()
		1484	CODE:
		1485	RETVAL = cctx_count;
		1486	OUTPUT:
		1487	RETVAL
		1488
		1489	int
		1490	cctx_idle ()
		1491	CODE:
		1492	RETVAL = cctx_idle;
		1493	OUTPUT:
		1494	RETVAL
		1495
		1496	void
		1497	list ()
		1498	PPCODE:
		1499	{
		1500	struct coro *coro;
		1501	for (coro = coro_first; coro; coro = coro->next)
		1502	if (coro->hv)
		1503	XPUSHs (sv_2mortal (newRV_inc ((SV *)coro->hv)));
		1504	}
		1505
		1506	void
		1507	call (Coro::State coro, SV *coderef)
		1508	ALIAS:
		1509	eval = 1
		1510	CODE:
		1511	{
		1512	if (coro->mainstack)
		1513	{
		1514	struct coro temp;
		1515	Zero (&temp, 1, struct coro);
		1516	temp.save = CORO_SAVE_ALL;
		1517
		1518	if (!(coro->flags & CF_RUNNING))
		1519	{
		1520	save_perl (aTHX_ &temp);
		1521	load_perl (aTHX_ coro);
		1522	}
		1523
		1524	{
		1525	dSP;
		1526	ENTER;
		1527	SAVETMPS;
		1528	PUSHMARK (SP);
		1529	PUTBACK;
		1530	if (ix)
		1531	eval_sv (coderef, 0);
		1532	else
		1533	call_sv (coderef, G_KEEPERR \| G_EVAL \| G_VOID \| G_DISCARD);
		1534	SPAGAIN;
		1535	FREETMPS;
		1536	LEAVE;
		1537	PUTBACK;
		1538	}
		1539
		1540	if (!(coro->flags & CF_RUNNING))
		1541	{
		1542	save_perl (aTHX_ coro);
		1543	load_perl (aTHX_ &temp);
		1544	}
		1545	}
		1546	}
		1547
		1548	SV *
		1549	is_ready (Coro::State coro)
		1550	PROTOTYPE: $
		1551	ALIAS:
		1552	is_ready = CF_READY
		1553	is_running = CF_RUNNING
		1554	is_new = CF_NEW
		1555	is_destroyed = CF_DESTROYED
		1556	CODE:
		1557	RETVAL = boolSV (coro->flags & ix);
		1558	OUTPUT:
		1559	RETVAL
		1560
		1561	void
		1562	trace (Coro::State coro, int flags = CC_TRACE \| CC_TRACE_SUB)
		1563	CODE:
		1564	if (flags & CC_TRACE)
		1565	{
		1566	if (!coro->cctx)
		1567	coro->cctx = cctx_new ();
		1568	else if (!(coro->cctx->flags & CC_TRACE))
		1569	croak ("cannot enable tracing on coroutine with custom stack");
		1570
		1571	coro->cctx->flags \|= flags & (CC_TRACE \| CC_TRACE_ALL);
		1572	}
		1573	else
		1574	if (coro->cctx && coro->cctx->flags & CC_TRACE)
		1575	{
		1576	coro->cctx->flags &= ~(CC_TRACE \| CC_TRACE_ALL);
		1577	coro->cctx->flags \|= CC_NOREUSE;
		1578
		1579	if (coro->flags & CF_RUNNING)
		1580	PL_runops = RUNOPS_DEFAULT;
		1581	else
		1582	coro->runops = RUNOPS_DEFAULT;
		1583	}
		1584
		1585	SV *
		1586	has_stack (Coro::State coro)
		1587	PROTOTYPE: $
		1588	CODE:
		1589	RETVAL = boolSV (!!coro->cctx);
		1590	OUTPUT:
		1591	RETVAL
		1592
		1593	int
		1594	is_traced (Coro::State coro)
		1595	PROTOTYPE: $
		1596	CODE:
		1597	RETVAL = (coro->cctx ? coro->cctx->flags : 0) & CC_TRACE_ALL;
		1598	OUTPUT:
		1599	RETVAL
		1600
		1601	IV
		1602	rss (Coro::State coro)
		1603	PROTOTYPE: $
		1604	CODE:
		1605	RETVAL = coro_rss (coro);
		1606	OUTPUT:
		1607	RETVAL
		1608
		1609
1150	MODULE = Coro::State PACKAGE = Coro	1610	MODULE = Coro::State PACKAGE = Coro
1151		1611
1152	BOOT:	1612	BOOT:
1153	{	1613	{
1154	int i;	1614	int i;
		1615
		1616	sv_pool_rss = get_sv ("Coro::POOL_RSS" , TRUE);
		1617	sv_pool_size = get_sv ("Coro::POOL_SIZE" , TRUE);
		1618	av_async_pool = get_av ("Coro::async_pool", TRUE);
		1619
		1620	coro_current = get_sv ("Coro::current", FALSE);
		1621	SvREADONLY_on (coro_current);
1155		1622
1156	coro_stash = gv_stashpv ("Coro", TRUE);	1623	coro_stash = gv_stashpv ("Coro", TRUE);
1157		1624
1158	newCONSTSUB (coro_stash, "PRIO_MAX", newSViv (PRIO_MAX));	1625	newCONSTSUB (coro_stash, "PRIO_MAX", newSViv (PRIO_MAX));
1159	newCONSTSUB (coro_stash, "PRIO_HIGH", newSViv (PRIO_HIGH));	1626	newCONSTSUB (coro_stash, "PRIO_HIGH", newSViv (PRIO_HIGH));
1160	newCONSTSUB (coro_stash, "PRIO_NORMAL", newSViv (PRIO_NORMAL));	1627	newCONSTSUB (coro_stash, "PRIO_NORMAL", newSViv (PRIO_NORMAL));
1161	newCONSTSUB (coro_stash, "PRIO_LOW", newSViv (PRIO_LOW));	1628	newCONSTSUB (coro_stash, "PRIO_LOW", newSViv (PRIO_LOW));
1162	newCONSTSUB (coro_stash, "PRIO_IDLE", newSViv (PRIO_IDLE));	1629	newCONSTSUB (coro_stash, "PRIO_IDLE", newSViv (PRIO_IDLE));
1163	newCONSTSUB (coro_stash, "PRIO_MIN", newSViv (PRIO_MIN));	1630	newCONSTSUB (coro_stash, "PRIO_MIN", newSViv (PRIO_MIN));
1164		1631
1165	coro_current = gv_fetchpv ("Coro::current", TRUE, SVt_PV);
1166	coro_idle = gv_fetchpv ("Coro::idle" , TRUE, SVt_PV);
1167
1168	for (i = PRIO_MAX - PRIO_MIN + 1; i--; )	1632	for (i = PRIO_MAX - PRIO_MIN + 1; i--; )
1169	coro_ready[i] = newAV ();	1633	coro_ready[i] = newAV ();
1170		1634
1171	{	1635	{
1172	SV *sv = perl_get_sv("Coro::API", 1);	1636	SV *sv = perl_get_sv("Coro::API", 1);
1173		1637
1174	coroapi.schedule = api_schedule;	1638	coroapi.schedule = api_schedule;
		1639	coroapi.save = api_save;
1175	coroapi.cede = api_cede;	1640	coroapi.cede = api_cede;
		1641	coroapi.cede_notself = api_cede_notself;
1176	coroapi.ready = api_ready;	1642	coroapi.ready = api_ready;
		1643	coroapi.is_ready = api_is_ready;
1177	coroapi.nready = &coro_nready;	1644	coroapi.nready = &coro_nready;
1178	coroapi.current = coro_current;	1645	coroapi.current = coro_current;
1179		1646
1180	GCoroAPI = &coroapi;	1647	GCoroAPI = &coroapi;
1181	sv_setiv (sv, (IV)&coroapi);	1648	sv_setiv (sv, (IV)&coroapi);
1182	SvREADONLY_on (sv);	1649	SvREADONLY_on (sv);
1183	}	1650	}
1184	}	1651	}
		1652
		1653	void
		1654	_set_current (SV *current)
		1655	PROTOTYPE: $
		1656	CODE:
		1657	SvREFCNT_dec (SvRV (coro_current));
		1658	SvRV_set (coro_current, SvREFCNT_inc (SvRV (current)));
1185		1659
1186	int	1660	int
1187	prio (Coro::State coro, int newprio = 0)	1661	prio (Coro::State coro, int newprio = 0)
1188	ALIAS:	1662	ALIAS:
1189	nice = 1	1663	nice = 1
…		…
1192	RETVAL = coro->prio;	1666	RETVAL = coro->prio;
1193		1667
1194	if (items > 1)	1668	if (items > 1)
1195	{	1669	{
1196	if (ix)	1670	if (ix)
1197	newprio += coro->prio;	1671	newprio = coro->prio - newprio;
1198		1672
1199	if (newprio < PRIO_MIN) newprio = PRIO_MIN;	1673	if (newprio < PRIO_MIN) newprio = PRIO_MIN;
1200	if (newprio > PRIO_MAX) newprio = PRIO_MAX;	1674	if (newprio > PRIO_MAX) newprio = PRIO_MAX;
1201		1675
1202	coro->prio = newprio;	1676	coro->prio = newprio;
1203	}	1677	}
1204	}	1678	}
		1679	OUTPUT:
		1680	RETVAL
1205		1681
1206	void	1682	SV *
1207	ready (SV *self)	1683	ready (SV *self)
1208	PROTOTYPE: $	1684	PROTOTYPE: $
1209	CODE:	1685	CODE:
1210	api_ready (self);	1686	RETVAL = boolSV (api_ready (self));
		1687	OUTPUT:
		1688	RETVAL
1211		1689
1212	int	1690	int
1213	nready (...)	1691	nready (...)
1214	PROTOTYPE:	1692	PROTOTYPE:
1215	CODE:	1693	CODE:
1216	RETVAL = coro_nready;	1694	RETVAL = coro_nready;
1217	OUTPUT:	1695	OUTPUT:
1218	RETVAL	1696	RETVAL
1219		1697
		1698	# for async_pool speedup
		1699	void
		1700	_pool_1 (SV *cb)
		1701	CODE:
		1702	{
		1703	int i, len;
		1704	HV hv = (HV )SvRV (coro_current);
		1705	AV *defav = GvAV (PL_defgv);
		1706	SV *invoke = hv_delete (hv, "_invoke", sizeof ("_invoke") - 1, 0);
		1707	AV *invoke_av;
		1708
		1709	if (!invoke)
		1710	croak ("\3terminate\2\n");
		1711
		1712	hv_store (hv, "desc", sizeof ("desc") - 1,
		1713	newSVpvn ("[async_pool]", sizeof ("[async_pool]") - 1), 0);
		1714
		1715	invoke_av = (AV *)SvRV (invoke);
		1716	len = av_len (invoke_av);
		1717
		1718	sv_setsv (cb, AvARRAY (invoke_av)[0]);
		1719
		1720	if (len > 0)
		1721	{
		1722	av_fill (defav, len - 1);
		1723	for (i = 0; i < len; ++i)
		1724	av_store (defav, i, SvREFCNT_inc (AvARRAY (invoke_av)[i + 1]));
		1725	}
		1726
		1727	SvREFCNT_dec (invoke);
		1728	}
		1729
		1730	void
		1731	_pool_2 (SV *cb)
		1732	CODE:
		1733	{
		1734	struct coro *coro = SvSTATE (coro_current);
		1735
		1736	sv_setsv (cb, &PL_sv_undef);
		1737
		1738	if (coro_rss (coro) > SvIV (sv_pool_rss)
		1739	\|\| av_len (av_async_pool) + 1 >= SvIV (sv_pool_size))
		1740	croak ("\3terminate\2\n");
		1741
		1742	av_clear (GvAV (PL_defgv));
		1743	hv_store ((HV *)SvRV (coro_current), "desc", sizeof ("desc") - 1,
		1744	newSVpvn ("[async_pool idle]", sizeof ("[async_pool idle]") - 1), 0);
		1745	coro->save = CORO_SAVE_DEF;
		1746	coro->prio = 0;
		1747	av_push (av_async_pool, newSVsv (coro_current));
		1748	}
		1749
		1750
1220	MODULE = Coro::State PACKAGE = Coro::AIO	1751	MODULE = Coro::State PACKAGE = Coro::AIO
1221		1752
1222	SV *	1753	SV *
1223	_get_state ()	1754	_get_state ()
1224	CODE:	1755	CODE:
1225	{	1756	{
1226	struct {	1757	struct io_state *data;
1227	int errorno;
1228	int laststype;
1229	int laststatval;
1230	Stat_t statcache;
1231	} data;
1232		1758
		1759	RETVAL = newSV (sizeof (struct io_state));
		1760	data = (struct io_state *)SvPVX (RETVAL);
		1761	SvCUR_set (RETVAL, sizeof (struct io_state));
		1762	SvPOK_only (RETVAL);
		1763
1233	data.errorno = errno;	1764	data->errorno = errno;
1234	data.laststype = PL_laststype;	1765	data->laststype = PL_laststype;
1235	data.laststatval = PL_laststatval;	1766	data->laststatval = PL_laststatval;
1236	data.statcache = PL_statcache;	1767	data->statcache = PL_statcache;
1237
1238	RETVAL = newSVpvn ((char *)&data, sizeof data);
1239	}	1768	}
1240	OUTPUT:	1769	OUTPUT:
1241	RETVAL	1770	RETVAL
1242		1771
1243	void	1772	void
1244	_set_state (char *data_)	1773	_set_state (char *data_)
1245	PROTOTYPE: $	1774	PROTOTYPE: $
1246	CODE:	1775	CODE:
1247	{	1776	{
1248	struct {	1777	struct io_state data = (void )data_;
1249	int errorno;
1250	int laststype;
1251	int laststatval;
1252	Stat_t statcache;
1253	} data = (void )data_;
1254		1778
1255	errno = data->errorno;	1779	errno = data->errorno;
1256	PL_laststype = data->laststype;	1780	PL_laststype = data->laststype;
1257	PL_laststatval = data->laststatval;	1781	PL_laststatval = data->laststatval;
1258	PL_statcache = data->statcache;	1782	PL_statcache = data->statcache;
1259	}	1783	}
		1784

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Comparing Coro/Coro/State.xs (file contents): Revision 1.102 by root, Mon Nov 27 01:28:03 2006 UTC vs. Revision 1.169 by root, Thu Sep 27 16:25:10 2007 UTC

Diff Legend

Comparing Coro/Coro/State.xs (file contents):
Revision 1.102 by root, Mon Nov 27 01:28:03 2006 UTC vs.
Revision 1.169 by root, Thu Sep 27 16:25:10 2007 UTC