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

Comparing Coro/Coro/State.xs (file contents):
Revision 1.105 by root, Mon Nov 27 02:01:33 2006 UTC vs.
Revision 1.170 by root, Thu Sep 27 20:14:49 2007 UTC

…		…
1	#include "libcoro/coro.c"	1	#include "libcoro/coro.c"
		2
		3	#define PERL_NO_GET_CONTEXT
2		4
3	#include "EXTERN.h"	5	#include "EXTERN.h"
4	#include "perl.h"	6	#include "perl.h"
5	#include "XSUB.h"	7	#include "XSUB.h"
6		8
7	#include "patchlevel.h"	9	#include "patchlevel.h"
8		10
		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
9	#if USE_VALGRIND	38	#if CORO_USE_VALGRIND
10	# include <valgrind/valgrind.h>	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)
11	#endif	43	#endif
		44
		45	/* the maximum number of idle cctx that will be pooled */
		46	#define MAX_IDLE_CCTX 8
12		47
13	#define PERL_VERSION_ATLEAST(a,b,c) \	48	#define PERL_VERSION_ATLEAST(a,b,c) \
14	(PERL_REVISION > (a) \	49	(PERL_REVISION > (a) \
15	\|\| (PERL_REVISION == (a) \	50	\|\| (PERL_REVISION == (a) \
16	&& (PERL_VERSION > (b) \	51	&& (PERL_VERSION > (b) \
35	# ifndef IS_PADCONST	70	# ifndef IS_PADCONST
36	# define IS_PADCONST(v) 0	71	# define IS_PADCONST(v) 0
37	# endif	72	# endif
38	#endif	73	#endif
39		74
40	#include <stdio.h>	75	/* 5.8.7 */
41	#include <errno.h>	76	#ifndef SvRV_set
		77	# define SvRV_set(s,v) SvRV(s) = (v)
		78	#endif
42		79
43	#if !__i386 && !__x86_64 && !__powerpc && !__m68k && !__alpha && !__mips && !__sparc64	80	#if !__i386 && !__x86_64 && !__powerpc && !__m68k && !__alpha && !__mips && !__sparc64
44	# undef STACKGUARD	81	# undef CORO_STACKGUARD
45	#endif
46
47	#ifndef STACKGUARD
48	# define STACKGUARD 0
49	#endif
50
51	#ifdef HAVE_MMAP
52	# include <unistd.h>
53	# include <sys/mman.h>
54	# ifndef MAP_ANONYMOUS
55	# ifdef MAP_ANON
56	# define MAP_ANONYMOUS MAP_ANON
57	# else
58	# undef HAVE_MMAP
59	# endif
60	# endif	82	#endif
61	# include <limits.h>	83
62	# ifndef PAGESIZE	84	#ifndef CORO_STACKGUARD
63	# define PAGESIZE pagesize	85	# define CORO_STACKGUARD 0
64	# define BOOT_PAGESIZE pagesize = sysconf (_SC_PAGESIZE)
65	static long pagesize;
66	# else
67	# define BOOT_PAGESIZE
68	# endif	86	#endif
69	#endif
70		87
71	/* The next macro should declare a variable stacklevel that contains and approximation	88	/* prefer perl internal functions over our own? */
72	* to the current C stack pointer. Its property is that it changes with each call	89	#ifndef CORO_PREFER_PERL_FUNCTIONS
73	* 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. */
74	#define dSTACKLEVEL int stacklevel	95	#define dSTACKLEVEL volatile char stacklevel
75	#define STACKLEVEL ((void *)&stacklevel)	96	#define STACKLEVEL ((void *)&stacklevel)
76		97
77	#define IN_DESTRUCT (PL_main_cv == Nullcv)	98	#define IN_DESTRUCT (PL_main_cv == Nullcv)
78		99
79	#if __GNUC__ >= 3	100	#if __GNUC__ >= 3
80	# define attribute(x) __attribute__(x)	101	# define attribute(x) __attribute__(x)
		102	# define BARRIER __asm__ __volatile__ ("" : : : "memory")
81	#else	103	#else
82	# define attribute(x)	104	# define attribute(x)
		105	# define BARRIER
83	#endif	106	#endif
84		107
85	#define NOINLINE attribute ((noinline))	108	#define NOINLINE attribute ((noinline))
86		109
87	#include "CoroAPI.h"	110	#include "CoroAPI.h"
88
89	#define TRANSFER_SET_STACKLEVEL 0x8bfbfbfb /* magic cookie */
90		111
91	#ifdef USE_ITHREADS	112	#ifdef USE_ITHREADS
92	static perl_mutex coro_mutex;	113	static perl_mutex coro_mutex;
93	# define LOCK do { MUTEX_LOCK (&coro_mutex); } while (0)	114	# define LOCK do { MUTEX_LOCK (&coro_mutex); } while (0)
94	# define UNLOCK do { MUTEX_UNLOCK (&coro_mutex); } while (0)	115	# define UNLOCK do { MUTEX_UNLOCK (&coro_mutex); } while (0)
95	#else	116	#else
96	# define LOCK (void)0	117	# define LOCK (void)0
97	# define UNLOCK (void)0	118	# define UNLOCK (void)0
98	#endif	119	#endif
99		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;
100	static struct CoroAPI coroapi;	131	static struct CoroAPI coroapi;
101	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;
102	static HV coro_state_stash, coro_stash;	134	static HV coro_state_stash, coro_stash;
103	static SV coro_mortal; / will be freed after next transfer */	135	static SV coro_mortal; / will be freed after next transfer */
104		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
105	/* this is a structure representing a c-level coroutine */	154	/* this is a structure representing a c-level coroutine */
106	typedef struct coro_stack {	155	typedef struct coro_cctx {
107	struct coro_stack *next;	156	struct coro_cctx *next;
108		157
109	/* the stack */	158	/* the stack */
110	void *sptr;	159	void *sptr;
111	long ssize; /* positive == mmap, otherwise malloc */	160	size_t ssize;
112		161
113	/* cpu state */	162	/* cpu state */
114	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 */
115	JMPENV *top_env;	165	JMPENV *top_env;
116	coro_context cctx;	166	coro_context cctx;
117		167
118	#if USE_VALGRIND	168	#if CORO_USE_VALGRIND
119	int valgrind_id;	169	int valgrind_id;
120	#endif	170	#endif
121	} coro_stack;	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	};
122		180
123	/* this is a structure representing a perl-level coroutine */	181	/* this is a structure representing a perl-level coroutine */
124	struct coro {	182	struct coro {
125	/* the c coroutine allocated to this perl coroutine, if any */	183	/* the c coroutine allocated to this perl coroutine, if any */
126	coro_stack *stack;	184	coro_cctx *cctx;
127		185
128	/* data associated with this coroutine (initial args) */	186	/* data associated with this coroutine (initial args) */
129	AV *args;	187	AV *args;
130	int refcnt;	188	int refcnt;
		189	int save; /* CORO_SAVE flags */
		190	int flags; /* CF_ flags */
131		191
132	/* optionally saved, might be zero */	192	/* optionally saved, might be zero */
133	AV *defav;	193	AV defav; / @_ */
134	SV *defsv;	194	SV defsv; / $_ */
135	SV *errsv;	195	SV errsv; / $@ */
		196	GV deffh; / default filehandle */
		197	SV irssv; / $/ */
		198	SV irssv_sv; / real $/ cache */
136		199
137	/* saved global state not related to stacks */	200	#define VAR(name,type) type name;
138	U8 dowarn;	201	# include "state.h"
139	I32 in_eval;	202	#undef VAR
140
141	/* the stacks and related info (callchain etc..) */
142	PERL_SI *curstackinfo;
143	AV *curstack;
144	AV *mainstack;
145	SV **stack_sp;
146	OP *op;
147	SV **curpad;
148	AV *comppad;
149	CV *compcv;
150	SV **stack_base;
151	SV **stack_max;
152	SV **tmps_stack;
153	I32 tmps_floor;
154	I32 tmps_ix;
155	I32 tmps_max;
156	I32 *markstack;
157	I32 *markstack_ptr;
158	I32 *markstack_max;
159	I32 *scopestack;
160	I32 scopestack_ix;
161	I32 scopestack_max;
162	ANY *savestack;
163	I32 savestack_ix;
164	I32 savestack_max;
165	OP **retstack;
166	I32 retstack_ix;
167	I32 retstack_max;
168	PMOP *curpm;
169	COP *curcop;
170		203
171	/* coro process data */	204	/* coro process data */
172	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 */
173	};	210	};
174		211
175	typedef struct coro *Coro__State;	212	typedef struct coro *Coro__State;
176	typedef struct coro *Coro__State_or_hashref;	213	typedef struct coro *Coro__State_or_hashref;
177		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
178	static AV *	232	static AV *
179	coro_clone_padlist (CV *cv)	233	coro_clone_padlist (pTHX_ CV *cv)
180	{	234	{
181	AV *padlist = CvPADLIST (cv);	235	AV *padlist = CvPADLIST (cv);
182	AV newpadlist, newpad;	236	AV newpadlist, newpad;
183		237
184	newpadlist = newAV ();	238	newpadlist = newAV ();
…		…
196		250
197	return newpadlist;	251	return newpadlist;
198	}	252	}
199		253
200	static void	254	static void
201	free_padlist (AV *padlist)	255	free_padlist (pTHX_ AV *padlist)
202	{	256	{
203	/* may be during global destruction */	257	/* may be during global destruction */
204	if (SvREFCNT (padlist))	258	if (SvREFCNT (padlist))
205	{	259	{
206	I32 i = AvFILLp (padlist);	260	I32 i = AvFILLp (padlist);
…		…
227	AV *padlist;	281	AV *padlist;
228	AV av = (AV )mg->mg_obj;	282	AV av = (AV )mg->mg_obj;
229		283
230	/* casting is fun. */	284	/* casting is fun. */
231	while (&PL_sv_undef != (SV )(padlist = (AV )av_pop (av)))	285	while (&PL_sv_undef != (SV )(padlist = (AV )av_pop (av)))
232	free_padlist (padlist);	286	free_padlist (aTHX_ padlist);
233		287
234	SvREFCNT_dec (av);	288	SvREFCNT_dec (av);
235		289
236	return 0;	290	return 0;
237	}	291	}
238		292
239	#define PERL_MAGIC_coro PERL_MAGIC_ext	293	#define PERL_MAGIC_coro PERL_MAGIC_ext
240		294
241	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))
242		326
243	/* the next two functions merely cache the padlists */	327	/* the next two functions merely cache the padlists */
244	static void	328	static void
245	get_padlist (CV *cv)	329	get_padlist (pTHX_ CV *cv)
246	{	330	{
247	MAGIC mg = mg_find ((SV )cv, PERL_MAGIC_coro);	331	MAGIC *mg = CORO_MAGIC (cv);
		332	AV *av;
248		333
249	if (mg && AvFILLp ((AV *)mg->mg_obj) >= 0)	334	if (mg && AvFILLp ((av = (AV *)mg->mg_obj)) >= 0)
250	CvPADLIST (cv) = (AV )av_pop ((AV )mg->mg_obj);	335	CvPADLIST (cv) = (AV *)AvARRAY (av)[AvFILLp (av)--];
251	else	336	else
252	{	337	{
253	#if 0	338	#if CORO_PREFER_PERL_FUNCTIONS
254	/* this is probably cleaner, but also slower? */	339	/* this is probably cleaner, but also slower? */
255	CV *cp = Perl_cv_clone (cv);	340	CV *cp = Perl_cv_clone (cv);
256	CvPADLIST (cv) = CvPADLIST (cp);	341	CvPADLIST (cv) = CvPADLIST (cp);
257	CvPADLIST (cp) = 0;	342	CvPADLIST (cp) = 0;
258	SvREFCNT_dec (cp);	343	SvREFCNT_dec (cp);
259	#else	344	#else
260	CvPADLIST (cv) = coro_clone_padlist (cv);	345	CvPADLIST (cv) = coro_clone_padlist (aTHX_ cv);
261	#endif	346	#endif
262	}	347	}
263	}	348	}
264		349
265	static void	350	static void
266	put_padlist (CV *cv)	351	put_padlist (pTHX_ CV *cv)
267	{	352	{
268	MAGIC mg = mg_find ((SV )cv, PERL_MAGIC_coro);	353	MAGIC *mg = CORO_MAGIC (cv);
		354	AV *av;
269		355
270	if (!mg)	356	if (!mg)
271	{	357	{
272	sv_magic ((SV *)cv, 0, PERL_MAGIC_coro, 0, 0);	358	sv_magic ((SV *)cv, 0, PERL_MAGIC_coro, 0, 0);
273	mg = mg_find ((SV *)cv, PERL_MAGIC_coro);	359	mg = mg_find ((SV *)cv, PERL_MAGIC_coro);
274	mg->mg_virtual = &vtbl_coro;	360	mg->mg_virtual = &vtbl_coro;
275	mg->mg_obj = (SV *)newAV ();	361	mg->mg_obj = (SV *)newAV ();
276	}	362	}
277		363
278	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);
279	}	370	}
		371
		372	/ load & save, init *****************************************************/
280		373
281	#define SB do {	374	#define SB do {
282	#define SE } while (0)	375	#define SE } while (0)
283		376
284	#define LOAD(state) load_state((state));
285	#define SAVE(state,flags) save_state((state),(flags));
286
287	#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
288		378
289	static void	379	static void
290	load_state(Coro__State c)	380	load_perl (pTHX_ Coro__State c)
291	{	381	{
292	PL_dowarn = c->dowarn;	382	#define VAR(name,type) PL_ ## name = c->name;
293	PL_in_eval = c->in_eval;	383	# include "state.h"
294		384	#undef VAR
295	PL_curstackinfo = c->curstackinfo;
296	PL_curstack = c->curstack;
297	PL_mainstack = c->mainstack;
298	PL_stack_sp = c->stack_sp;
299	PL_op = c->op;
300	PL_curpad = c->curpad;
301	PL_comppad = c->comppad;
302	PL_compcv = c->compcv;
303	PL_stack_base = c->stack_base;
304	PL_stack_max = c->stack_max;
305	PL_tmps_stack = c->tmps_stack;
306	PL_tmps_floor = c->tmps_floor;
307	PL_tmps_ix = c->tmps_ix;
308	PL_tmps_max = c->tmps_max;
309	PL_markstack = c->markstack;
310	PL_markstack_ptr = c->markstack_ptr;
311	PL_markstack_max = c->markstack_max;
312	PL_scopestack = c->scopestack;
313	PL_scopestack_ix = c->scopestack_ix;
314	PL_scopestack_max = c->scopestack_max;
315	PL_savestack = c->savestack;
316	PL_savestack_ix = c->savestack_ix;
317	PL_savestack_max = c->savestack_max;
318	#if !PERL_VERSION_ATLEAST (5,9,0)
319	PL_retstack = c->retstack;
320	PL_retstack_ix = c->retstack_ix;
321	PL_retstack_max = c->retstack_max;
322	#endif
323	PL_curpm = c->curpm;
324	PL_curcop = c->curcop;
325		385
326	if (c->defav) REPLACE_SV (GvAV (PL_defgv), c->defav);	386	if (c->defav) REPLACE_SV (GvAV (PL_defgv), c->defav);
327	if (c->defsv) REPLACE_SV (DEFSV , c->defsv);	387	if (c->defsv) REPLACE_SV (DEFSV , c->defsv);
328	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	}
329		405
330	{	406	{
331	dSP;	407	dSP;
332	CV *cv;	408	CV *cv;
333		409
334	/* now do the ugly restore mess */	410	/* now do the ugly restore mess */
335	while ((cv = (CV *)POPs))	411	while ((cv = (CV *)POPs))
336	{	412	{
337	AV padlist = (AV )POPs;
338
339	if (padlist)
340	{
341	put_padlist (cv); /* mark this padlist as available */	413	put_padlist (aTHX_ cv); /* mark this padlist as available */
342	CvPADLIST(cv) = padlist;	414	CvDEPTH (cv) = PTR2IV (POPs);
343	}	415	CvPADLIST (cv) = (AV *)POPs;
344
345	++CvDEPTH(cv);
346	}	416	}
347		417
348	PUTBACK;	418	PUTBACK;
349	}	419	}
350	}	420	}
351		421
352	static void	422	static void
353	save_state(Coro__State c, int flags)	423	save_perl (pTHX_ Coro__State c)
354	{	424	{
355	{	425	{
356	dSP;	426	dSP;
357	I32 cxix = cxstack_ix;	427	I32 cxix = cxstack_ix;
358	PERL_CONTEXT *ccstk = cxstack;	428	PERL_CONTEXT *ccstk = cxstack;
…		…
361	/*	431	/*
362	* 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
363	* (and reinitialize) all cv's in the whole callchain :(	433	* (and reinitialize) all cv's in the whole callchain :(
364	*/	434	*/
365		435
366	PUSHs (Nullsv);	436	XPUSHs (Nullsv);
367	/* this loop was inspired by pp_caller */	437	/* this loop was inspired by pp_caller */
368	for (;;)	438	for (;;)
369	{	439	{
370	while (cxix >= 0)	440	while (cxix >= 0)
371	{	441	{
372	PERL_CONTEXT *cx = &ccstk[cxix--];	442	PERL_CONTEXT *cx = &ccstk[cxix--];
373		443
374	if (CxTYPE(cx) == CXt_SUB)	444	if (CxTYPE (cx) == CXt_SUB \|\| CxTYPE (cx) == CXt_FORMAT)
375	{	445	{
376	CV *cv = cx->blk_sub.cv;	446	CV *cv = cx->blk_sub.cv;
		447
377	if (CvDEPTH(cv))	448	if (CvDEPTH (cv))
378	{	449	{
379	EXTEND (SP, CvDEPTH(cv)*2);	450	EXTEND (SP, 3);
380
381	while (--CvDEPTH(cv))
382	{
383	/* this tells the restore code to increment CvDEPTH */
384	PUSHs (Nullsv);
385	PUSHs ((SV *)cv);
386	}
387
388	PUSHs ((SV *)CvPADLIST(cv));	451	PUSHs ((SV *)CvPADLIST (cv));
		452	PUSHs (INT2PTR (SV *, CvDEPTH (cv)));
389	PUSHs ((SV *)cv);	453	PUSHs ((SV *)cv);
390		454
		455	CvDEPTH (cv) = 0;
391	get_padlist (cv);	456	get_padlist (aTHX_ cv);
392	}	457	}
393	}	458	}
394	#ifdef CXt_FORMAT
395	else if (CxTYPE(cx) == CXt_FORMAT)
396	{
397	/* I never used formats, so how should I know how these are implemented? */
398	/* my bold guess is as a simple, plain sub... */
399	croak ("CXt_FORMAT not yet handled. Don't switch coroutines from within formats");
400	}
401	#endif
402	}	459	}
403		460
404	if (top_si->si_type == PERLSI_MAIN)	461	if (top_si->si_type == PERLSI_MAIN)
405	break;	462	break;
406		463
407	top_si = top_si->si_prev;	464	top_si = top_si->si_prev;
408	ccstk = top_si->si_cxstack;	465	ccstk = top_si->si_cxstack;
409	cxix = top_si->si_cxix;	466	cxix = top_si->si_cxix;
410	}	467	}
411		468
412	PUTBACK;	469	PUTBACK;
413	}	470	}
414		471
415	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;
416	c->defsv = flags & TRANSFER_SAVE_DEFSV ? SvREFCNT_inc (DEFSV) : 0;	473	c->defsv = c->save & CORO_SAVE_DEFSV ? SvREFCNT_inc (DEFSV) : 0;
417	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;
418		477
419	c->dowarn = PL_dowarn;	478	#define VAR(name,type)c->name = PL_ ## name;
420	c->in_eval = PL_in_eval;	479	# include "state.h"
421		480	#undef VAR
422	c->curstackinfo = PL_curstackinfo;
423	c->curstack = PL_curstack;
424	c->mainstack = PL_mainstack;
425	c->stack_sp = PL_stack_sp;
426	c->op = PL_op;
427	c->curpad = PL_curpad;
428	c->comppad = PL_comppad;
429	c->compcv = PL_compcv;
430	c->stack_base = PL_stack_base;
431	c->stack_max = PL_stack_max;
432	c->tmps_stack = PL_tmps_stack;
433	c->tmps_floor = PL_tmps_floor;
434	c->tmps_ix = PL_tmps_ix;
435	c->tmps_max = PL_tmps_max;
436	c->markstack = PL_markstack;
437	c->markstack_ptr = PL_markstack_ptr;
438	c->markstack_max = PL_markstack_max;
439	c->scopestack = PL_scopestack;
440	c->scopestack_ix = PL_scopestack_ix;
441	c->scopestack_max = PL_scopestack_max;
442	c->savestack = PL_savestack;
443	c->savestack_ix = PL_savestack_ix;
444	c->savestack_max = PL_savestack_max;
445	#if !PERL_VERSION_ATLEAST (5,9,0)
446	c->retstack = PL_retstack;
447	c->retstack_ix = PL_retstack_ix;
448	c->retstack_max = PL_retstack_max;
449	#endif
450	c->curpm = PL_curpm;
451	c->curcop = PL_curcop;
452	}	481	}
453		482
454	/*	483	/*
455	* allocate various perl stacks. This is an exact copy	484	* allocate various perl stacks. This is an exact copy
456	* of perl.c:init_stacks, except that it uses less memory	485	* of perl.c:init_stacks, except that it uses less memory
457	* on the (sometimes correct) assumption that coroutines do	486	* on the (sometimes correct) assumption that coroutines do
458	* not usually need a lot of stackspace.	487	* not usually need a lot of stackspace.
459	*/	488	*/
		489	#if CORO_PREFER_PERL_FUNCTIONS
		490	# define coro_init_stacks init_stacks
		491	#else
460	static void	492	static void
461	coro_init_stacks ()	493	coro_init_stacks (pTHX)
462	{	494	{
463	PL_curstackinfo = new_stackinfo(96, 1024/sizeof(PERL_CONTEXT) - 1);	495	PL_curstackinfo = new_stackinfo(64, 6);
464	PL_curstackinfo->si_type = PERLSI_MAIN;	496	PL_curstackinfo->si_type = PERLSI_MAIN;
465	PL_curstack = PL_curstackinfo->si_stack;	497	PL_curstack = PL_curstackinfo->si_stack;
466	PL_mainstack = PL_curstack; /* remember in case we switch stacks */	498	PL_mainstack = PL_curstack; /* remember in case we switch stacks */
467		499
468	PL_stack_base = AvARRAY(PL_curstack);	500	PL_stack_base = AvARRAY(PL_curstack);
469	PL_stack_sp = PL_stack_base;	501	PL_stack_sp = PL_stack_base;
470	PL_stack_max = PL_stack_base + AvMAX(PL_curstack);	502	PL_stack_max = PL_stack_base + AvMAX(PL_curstack);
471		503
472	New(50,PL_tmps_stack,96,SV*);	504	New(50,PL_tmps_stack,64,SV*);
473	PL_tmps_floor = -1;	505	PL_tmps_floor = -1;
474	PL_tmps_ix = -1;	506	PL_tmps_ix = -1;
475	PL_tmps_max = 96;	507	PL_tmps_max = 64;
476		508
477	New(54,PL_markstack,16,I32);	509	New(54,PL_markstack,16,I32);
478	PL_markstack_ptr = PL_markstack;	510	PL_markstack_ptr = PL_markstack;
479	PL_markstack_max = PL_markstack + 16;	511	PL_markstack_max = PL_markstack + 16;
480		512
…		…
484		516
485	New(54,PL_scopestack,16,I32);	517	New(54,PL_scopestack,16,I32);
486	PL_scopestack_ix = 0;	518	PL_scopestack_ix = 0;
487	PL_scopestack_max = 16;	519	PL_scopestack_max = 16;
488		520
489	New(54,PL_savestack,96,ANY);	521	New(54,PL_savestack,64,ANY);
490	PL_savestack_ix = 0;	522	PL_savestack_ix = 0;
491	PL_savestack_max = 96;	523	PL_savestack_max = 64;
492		524
493	#if !PERL_VERSION_ATLEAST (5,9,0)	525	#if !PERL_VERSION_ATLEAST (5,9,0)
494	New(54,PL_retstack,8,OP*);	526	New(54,PL_retstack,4,OP*);
495	PL_retstack_ix = 0;	527	PL_retstack_ix = 0;
496	PL_retstack_max = 8;	528	PL_retstack_max = 4;
497	#endif	529	#endif
498	}	530	}
		531	#endif
499		532
500	/*	533	/*
501	* destroy the stacks, the callchain etc...	534	* destroy the stacks, the callchain etc...
502	*/	535	*/
503	static void	536	static void
504	coro_destroy_stacks()	537	coro_destroy_stacks (pTHX)
505	{	538	{
506	if (!IN_DESTRUCT)	539	if (!IN_DESTRUCT)
507	{	540	{
508	/* is this ugly, I ask? */	541	/* restore all saved variables and stuff */
509	LEAVE_SCOPE (0);	542	LEAVE_SCOPE (0);
		543	assert (PL_tmps_floor == -1);
510		544
511	/* sure it is, but more important: is it correct?? :/ */	545	/* free all temporaries */
512	FREETMPS;	546	FREETMPS;
		547	assert (PL_tmps_ix == -1);
513		548
		549	/* unwind all extra stacks */
514	/POPSTACK_TO (PL_mainstack);//D//use/	550	POPSTACK_TO (PL_mainstack);
		551
		552	/* unwind main stack */
		553	dounwind (-1);
515	}	554	}
516		555
517	while (PL_curstackinfo->si_next)	556	while (PL_curstackinfo->si_next)
518	PL_curstackinfo = PL_curstackinfo->si_next;	557	PL_curstackinfo = PL_curstackinfo->si_next;
519		558
520	while (PL_curstackinfo)	559	while (PL_curstackinfo)
521	{	560	{
522	PERL_SI *p = PL_curstackinfo->si_prev;	561	PERL_SI *p = PL_curstackinfo->si_prev;
523		562
524	{ /D//remove/
525	dSP;
526	SWITCHSTACK (PL_curstack, PL_curstackinfo->si_stack);
527	PUTBACK; /* possibly superfluous */
528	}
529
530	if (!IN_DESTRUCT)	563	if (!IN_DESTRUCT)
531	{
532	dounwind (-1);/D//remove/
533	SvREFCNT_dec (PL_curstackinfo->si_stack);	564	SvREFCNT_dec (PL_curstackinfo->si_stack);
534	}
535		565
536	Safefree (PL_curstackinfo->si_cxstack);	566	Safefree (PL_curstackinfo->si_cxstack);
537	Safefree (PL_curstackinfo);	567	Safefree (PL_curstackinfo);
538	PL_curstackinfo = p;	568	PL_curstackinfo = p;
539	}	569	}
…		…
545	#if !PERL_VERSION_ATLEAST (5,9,0)	575	#if !PERL_VERSION_ATLEAST (5,9,0)
546	Safefree (PL_retstack);	576	Safefree (PL_retstack);
547	#endif	577	#endif
548	}	578	}
549		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
550	static void	613	static void
551	setup_coro (struct coro *coro)	614	setup_coro (pTHX_ struct coro *coro)
552	{	615	{
553	/*	616	/*
554	* emulate part of the perl startup here.	617	* emulate part of the perl startup here.
555	*/	618	*/
556
557	coro_init_stacks ();	619	coro_init_stacks (aTHX);
558		620
		621	PL_runops = RUNOPS_DEFAULT;
		622	PL_curcop = &PL_compiling;
		623	PL_in_eval = EVAL_NULL;
559	PL_curcop = 0;	624	PL_comppad = 0;
560	PL_in_eval = 0;
561	PL_curpm = 0;	625	PL_curpm = 0;
		626	PL_localizing = 0;
		627	PL_dirty = 0;
		628	PL_restartop = 0;
562		629
563	{	630	{
564	dSP;	631	dSP;
565	LOGOP myop;	632	LOGOP myop;
566		633
567	/* I have no idea why this is needed, but it is */
568	PUSHMARK (SP);
569
570	SvREFCNT_dec (GvAV (PL_defgv));	634	SvREFCNT_dec (GvAV (PL_defgv));
571	GvAV (PL_defgv) = coro->args; coro->args = 0;	635	GvAV (PL_defgv) = coro->args; coro->args = 0;
572		636
573	Zero (&myop, 1, LOGOP);	637	Zero (&myop, 1, LOGOP);
574	myop.op_next = Nullop;	638	myop.op_next = Nullop;
575	myop.op_flags = OPf_WANT_VOID;	639	myop.op_flags = OPf_WANT_VOID;
576		640
		641	PUSHMARK (SP);
		642	XPUSHs (av_shift (GvAV (PL_defgv)));
		643	PUTBACK;
577	PL_op = (OP *)&myop;	644	PL_op = (OP *)&myop;
578
579	PUSHMARK (SP);
580	XPUSHs ((SV *)get_cv ("Coro::State::coro_init", FALSE));
581	PUTBACK;
582	PL_op = PL_ppaddr[OP_ENTERSUB](aTHX);	645	PL_op = PL_ppaddr[OP_ENTERSUB](aTHX);
583	SPAGAIN;	646	SPAGAIN;
584
585	ENTER; /* necessary e.g. for dounwind */
586	}	647	}
		648
		649	ENTER; /* necessary e.g. for dounwind */
587	}	650	}
588		651
589	static void	652	static void
590	free_coro_mortal ()	653	free_coro_mortal (pTHX)
591	{	654	{
592	if (coro_mortal)	655	if (coro_mortal)
593	{	656	{
594	SvREFCNT_dec (coro_mortal);	657	SvREFCNT_dec (coro_mortal);
595	coro_mortal = 0;	658	coro_mortal = 0;
596	}	659	}
597	}	660	}
598		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 */
599	static void NOINLINE	777	static void NOINLINE
600	prepare_cctx (coro_stack *cctx)	778	prepare_cctx (pTHX_ coro_cctx *cctx)
601	{	779	{
602	dSP;	780	dSP;
603	LOGOP myop;	781	LOGOP myop;
604		782
		783	PL_top_env = &PL_start_env;
		784
		785	if (cctx->flags & CC_TRACE)
		786	PL_runops = runops_trace;
		787
605	Zero (&myop, 1, LOGOP);	788	Zero (&myop, 1, LOGOP);
606	myop.op_next = PL_op;	789	myop.op_next = PL_op;
607	myop.op_flags = OPf_WANT_VOID;	790	myop.op_flags = OPf_WANT_VOID \| OPf_STACKED;
608
609	sv_setiv (get_sv ("Coro::State::cctx_stack", FALSE), PTR2IV (cctx));
610		791
611	PUSHMARK (SP);	792	PUSHMARK (SP);
		793	EXTEND (SP, 2);
		794	PUSHs (sv_2mortal (newSViv (PTR2IV (cctx))));
612	XPUSHs ((SV *)get_cv ("Coro::State::cctx_init", FALSE));	795	PUSHs ((SV *)get_cv ("Coro::State::_cctx_init", FALSE));
613	PUTBACK;	796	PUTBACK;
		797	PL_op = (OP *)&myop;
614	PL_restartop = PL_ppaddr[OP_ENTERSUB](aTHX);	798	PL_op = PL_ppaddr[OP_ENTERSUB](aTHX);
615	SPAGAIN;	799	SPAGAIN;
616	}	800	}
617		801
		802	/*
		803	* this is a _very_ stripped down perl interpreter ;)
		804	*/
618	static void	805	static void
619	coro_run (void *arg)	806	coro_run (void *arg)
620	{	807	{
		808	dTHX;
		809
621	/* coro_run is the alternative epilogue of transfer() */	810	/* coro_run is the alternative tail of transfer(), so unlock here. */
622	UNLOCK;	811	UNLOCK;
623		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
624	/*	823	/*
625	* 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
626	*/	829	*/
627	PL_top_env = &PL_start_env;	830	PL_top_env = main_top_env;
628	/* inject call to cctx_init */	831	JMPENV_JUMP (2); /* I do not feel well about the hardcoded 2 at all */
629	prepare_cctx ((coro_stack *)arg);
630
631	/* somebody will hit me for both perl_run and PL_restartop */
632	perl_run (PL_curinterp);
633
634	fputs ("FATAL: C coroutine fell over the edge of the world, aborting. Did you call exit in a coroutine?\n", stderr);
635	abort ();
636	}	832	}
637		833
638	static coro_stack *	834	static coro_cctx *
639	stack_new ()	835	cctx_new ()
640	{	836	{
641	coro_stack *stack;	837	coro_cctx *cctx;
		838	void *stack_start;
		839	size_t stack_size;
642		840
		841	++cctx_count;
		842
643	New (0, stack, 1, coro_stack);	843	Newz (0, cctx, 1, coro_cctx);
644		844
645	#if HAVE_MMAP	845	#if HAVE_MMAP
646		846
647	stack->ssize = ((STACKSIZE * sizeof (long) + PAGESIZE - 1) / PAGESIZE + STACKGUARD) * PAGESIZE;	847	cctx->ssize = ((coro_stacksize * sizeof (long) + PAGESIZE - 1) / PAGESIZE + CORO_STACKGUARD) * PAGESIZE;
648	/* mmap suppsedly does allocate-on-write for us */	848	/* mmap supposedly does allocate-on-write for us */
649	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);
650		850
651	if (stack->sptr == (void *)-1)	851	if (cctx->sptr != (void *)-1)
652	{
653	perror ("FATAL: unable to mmap stack for coroutine");
654	_exit (EXIT_FAILURE);
655	}	852	{
656
657	# if STACKGUARD	853	# if CORO_STACKGUARD
658	mprotect (stack->sptr, STACKGUARD * PAGESIZE, PROT_NONE);	854	mprotect (cctx->sptr, CORO_STACKGUARD * PAGESIZE, PROT_NONE);
659	# endif	855	# endif
660		856	stack_start = CORO_STACKGUARD * PAGESIZE + (char *)cctx->sptr;
661	#else	857	stack_size = cctx->ssize - CORO_STACKGUARD * PAGESIZE;
662		858	cctx->flags \|= CC_MAPPED;
663	stack->ssize = STACKSIZE * (long)sizeof (long);
664	New (0, stack->sptr, STACKSIZE, long);
665
666	if (!stack->sptr)
667	{	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	{
668	perror (stderr, "FATAL: unable to malloc stack for coroutine");	868	perror ("FATAL: unable to allocate stack for coroutine");
669	_exit (EXIT_FAILURE);	869	_exit (EXIT_FAILURE);
670	}	870	}
671		871
672	#endif	872	stack_start = cctx->sptr;
		873	stack_size = cctx->ssize;
		874	}
673		875
674	#if USE_VALGRIND	876	REGISTER_STACK (cctx, (char )stack_start, (char )stack_start + stack_size);
675	stack->valgrind_id = VALGRIND_STACK_REGISTER (
676	STACKGUARD * PAGESIZE + (char *)stack->sptr,
677	stack->ssize + (char *)stack->sptr
678	);
679	#endif
680
681	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);
682		878
683	return stack;	879	return cctx;
684	}	880	}
685		881
686	static void	882	static void
687	stack_free (coro_stack *stack)	883	cctx_destroy (coro_cctx *cctx)
688	{	884	{
689	if (!stack)	885	if (!cctx)
690	return;	886	return;
691		887
		888	--cctx_count;
		889
692	#if USE_VALGRIND	890	#if CORO_USE_VALGRIND
693	VALGRIND_STACK_DEREGISTER (stack->valgrind_id);	891	VALGRIND_STACK_DEREGISTER (cctx->valgrind_id);
694	#endif	892	#endif
695		893
696	#if HAVE_MMAP	894	#if HAVE_MMAP
		895	if (cctx->flags & CC_MAPPED)
697	munmap (stack->sptr, stack->ssize);	896	munmap (cctx->sptr, cctx->ssize);
698	#else	897	else
		898	#endif
699	Safefree (stack->sptr);	899	Safefree (cctx->sptr);
700	#endif
701		900
702	Safefree (stack);	901	Safefree (cctx);
703	}	902	}
704		903
705	static coro_stack *stack_first;
706	static int cctx_count, cctx_idle;
707
708	static coro_stack *	904	static coro_cctx *
709	stack_get ()	905	cctx_get (pTHX)
710	{	906	{
711	coro_stack *stack;	907	while (cctx_first)
712
713	if (stack_first)
714	{	908	{
		909	coro_cctx *cctx = cctx_first;
		910	cctx_first = cctx->next;
715	--cctx_idle;	911	--cctx_idle;
716	stack = stack_first;	912
717	stack_first = stack->next;	913	if (cctx->ssize >= coro_stacksize && !(cctx->flags & CC_NOREUSE))
718	}	914	return cctx;
719	else	915
720	{	916	cctx_destroy (cctx);
721	++cctx_count;
722	stack = stack_new ();
723	PL_op = PL_op->op_next;
724	}	917	}
725		918
726	return stack;	919	return cctx_new ();
727	}	920	}
728		921
729	static void	922	static void
730	stack_put (coro_stack *stack)	923	cctx_put (coro_cctx *cctx)
731	{	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
732	++cctx_idle;	935	++cctx_idle;
733	stack->next = stack_first;	936	cctx->next = cctx_first;
734	stack_first = stack;	937	cctx_first = cctx;
735	}	938	}
736		939
737	/* never call directly, always through the coro_state_transfer global variable */	940	/ coroutine switching ***************************************************/
		941
738	static void NOINLINE	942	static void NOINLINE
		943	transfer_check (pTHX_ struct coro prev, struct coro next)
		944	{
		945	if (prev != next)
		946	{
		947	if (!(prev->flags & (CF_RUNNING \| CF_NEW)))
		948	croak ("Coro::State::transfer called with non-running/new prev Coro::State, but can only transfer from running or new states");
		949
		950	if (next->flags & CF_RUNNING)
		951	croak ("Coro::State::transfer called with running next Coro::State, but can only transfer to inactive states");
		952
		953	if (next->flags & CF_DESTROYED)
		954	croak ("Coro::State::transfer called with destroyed next Coro::State, but can only transfer to inactive states");
		955
		956	if (PL_lex_state != LEX_NOTPARSING)
		957	croak ("Coro::State::transfer called while parsing, but this is not supported");
		958	}
		959	}
		960
		961	/* always use the TRANSFER macro */
		962	static void NOINLINE
739	transfer (struct coro prev, struct coro next, int flags)	963	transfer (pTHX_ struct coro prev, struct coro next)
740	{	964	{
741	dSTACKLEVEL;	965	dSTACKLEVEL;
742		966
743	/* sometimes transfer is only called to set idle_sp */	967	/* sometimes transfer is only called to set idle_sp */
744	if (flags == TRANSFER_SET_STACKLEVEL)	968	if (!next)
		969	{
745	((coro_stack *)prev)->idle_sp = STACKLEVEL;	970	((coro_cctx *)prev)->idle_sp = STACKLEVEL;
		971	assert (((coro_cctx )prev)->idle_te = PL_top_env); / just for the side-effect when asserts are enabled */
		972	}
746	else if (prev != next)	973	else if (prev != next)
747	{	974	{
748	coro_stack *prev__stack;	975	coro_cctx *prev__cctx;
		976
		977	if (prev->flags & CF_NEW)
		978	{
		979	/* create a new empty context */
		980	Newz (0, prev->cctx, 1, coro_cctx);
		981	prev->flags &= ~CF_NEW;
		982	prev->flags \|= CF_RUNNING;
		983	}
		984
		985	prev->flags &= ~CF_RUNNING;
		986	next->flags \|= CF_RUNNING;
749		987
750	LOCK;	988	LOCK;
751		989
752	if (next->mainstack)	990	if (next->flags & CF_NEW)
753	{	991	{
754	/* coroutine already started */	992	/* need to start coroutine */
755	SAVE (prev, flags);	993	next->flags &= ~CF_NEW;
756	LOAD (next);	994	/* first get rid of the old state */
		995	save_perl (aTHX_ prev);
		996	/* setup coroutine call */
		997	setup_coro (aTHX_ next);
757	}	998	}
758	else	999	else
759	{	1000	{
760	/* need to start coroutine */	1001	/* coroutine already started */
761	/* first get rid of the old state */	1002	save_perl (aTHX_ prev);
762	SAVE (prev, -1);	1003	load_perl (aTHX_ next);
763	/* setup coroutine call */
764	setup_coro (next);
765	/* need a stack */
766	next->stack = 0;
767	}	1004	}
768		1005
769	if (!prev->stack)
770	/* create a new empty context */
771	Newz (0, prev->stack, 1, coro_stack);
772
773	prev__stack = prev->stack;	1006	prev__cctx = prev->cctx;
774		1007
775	/* possibly "free" the stack */	1008	/* possibly "free" the cctx */
776	if (prev__stack->idle_sp == STACKLEVEL)	1009	if (prev__cctx->idle_sp == STACKLEVEL && !(prev__cctx->flags & CC_TRACE))
777	{	1010	{
778	stack_put (prev__stack);	1011	/* I assume that STACKLEVEL is a stronger indicator than PL_top_env changes */
		1012	assert (("ERROR: current top_env must equal previous top_env", PL_top_env == prev__cctx->idle_te));
		1013
779	prev->stack = 0;	1014	prev->cctx = 0;
		1015
		1016	cctx_put (prev__cctx);
780	}	1017	}
781		1018
782	if (!next->stack)	1019	if (!next->cctx)
783	next->stack = stack_get ();	1020	next->cctx = cctx_get (aTHX);
784		1021
785	if (prev__stack != next->stack)	1022	if (prev__cctx != next->cctx)
786	{	1023	{
787	prev__stack->top_env = PL_top_env;	1024	prev__cctx->top_env = PL_top_env;
788	PL_top_env = next->stack->top_env;	1025	PL_top_env = next->cctx->top_env;
789	coro_transfer (&prev__stack->cctx, &next->stack->cctx);	1026	coro_transfer (&prev__cctx->cctx, &next->cctx->cctx);
790	}	1027	}
791		1028
792	free_coro_mortal ();	1029	free_coro_mortal (aTHX);
793
794	UNLOCK;	1030	UNLOCK;
795	}	1031	}
796	}	1032	}
797		1033
798	struct transfer_args	1034	struct transfer_args
799	{	1035	{
800	struct coro prev, next;	1036	struct coro prev, next;
801	int flags;
802	};	1037	};
803		1038
804	#define TRANSFER(ta) transfer ((ta).prev, (ta).next, (ta).flags)	1039	#define TRANSFER(ta) transfer (aTHX_ (ta).prev, (ta).next)
		1040	#define TRANSFER_CHECK(ta) transfer_check (aTHX_ (ta).prev, (ta).next)
805		1041
		1042	/ high level stuff ******************************************************/
		1043
806	static void	1044	static int
807	coro_state_destroy (struct coro *coro)	1045	coro_state_destroy (pTHX_ struct coro *coro)
808	{	1046	{
809	if (coro->refcnt--)	1047	if (coro->flags & CF_DESTROYED)
810	return;	1048	return 0;
		1049
		1050	coro->flags \|= CF_DESTROYED;
		1051
		1052	if (coro->flags & CF_READY)
		1053	{
		1054	/* reduce nready, as destroying a ready coro effectively unreadies it */
		1055	/* alternative: look through all ready queues and remove the coro */
		1056	LOCK;
		1057	--coro_nready;
		1058	UNLOCK;
		1059	}
		1060	else
		1061	coro->flags \|= CF_READY; /* make sure it is NOT put into the readyqueue */
811		1062
812	if (coro->mainstack && coro->mainstack != main_mainstack)	1063	if (coro->mainstack && coro->mainstack != main_mainstack)
813	{	1064	{
814	struct coro temp;	1065	struct coro temp;
815		1066
816	SAVE ((&temp), TRANSFER_SAVE_ALL);	1067	assert (!(coro->flags & CF_RUNNING));
817	LOAD (coro);
818		1068
		1069	Zero (&temp, 1, struct coro);
		1070	temp.save = CORO_SAVE_ALL;
		1071
		1072	if (coro->flags & CF_RUNNING)
		1073	croak ("FATAL: tried to destroy currently running coroutine");
		1074
		1075	save_perl (aTHX_ &temp);
		1076	load_perl (aTHX_ coro);
		1077
819	coro_destroy_stacks ();	1078	coro_destroy_stacks (aTHX);
820		1079
821	LOAD ((&temp)); /* this will get rid of defsv etc.. */	1080	load_perl (aTHX_ &temp); /* this will get rid of defsv etc.. */
822		1081
823	coro->mainstack = 0;	1082	coro->mainstack = 0;
824	}	1083	}
825		1084
826	stack_free (coro->stack);	1085	cctx_destroy (coro->cctx);
827	SvREFCNT_dec (coro->args);	1086	SvREFCNT_dec (coro->args);
828	Safefree (coro);	1087
		1088	if (coro->next) coro->next->prev = coro->prev;
		1089	if (coro->prev) coro->prev->next = coro->next;
		1090	if (coro == coro_first) coro_first = coro->next;
		1091
		1092	return 1;
829	}	1093	}
830		1094
831	static int	1095	static int
832	coro_state_clear (pTHX_ SV sv, MAGIC mg)	1096	coro_state_free (pTHX_ SV sv, MAGIC mg)
833	{	1097	{
834	struct coro coro = (struct coro )mg->mg_ptr;	1098	struct coro coro = (struct coro )mg->mg_ptr;
835	mg->mg_ptr = 0;	1099	mg->mg_ptr = 0;
836		1100
		1101	coro->hv = 0;
		1102
		1103	if (--coro->refcnt < 0)
		1104	{
837	coro_state_destroy (coro);	1105	coro_state_destroy (aTHX_ coro);
		1106	Safefree (coro);
		1107	}
838		1108
839	return 0;	1109	return 0;
840	}	1110	}
841		1111
842	static int	1112	static int
…		…
849	return 0;	1119	return 0;
850	}	1120	}
851		1121
852	static MGVTBL coro_state_vtbl = {	1122	static MGVTBL coro_state_vtbl = {
853	0, 0, 0, 0,	1123	0, 0, 0, 0,
854	coro_state_clear,	1124	coro_state_free,
855	0,	1125	0,
856	#ifdef MGf_DUP	1126	#ifdef MGf_DUP
857	coro_state_dup,	1127	coro_state_dup,
858	#else	1128	#else
859	# define MGf_DUP 0	1129	# define MGf_DUP 0
860	#endif	1130	#endif
861	};	1131	};
862		1132
863	static struct coro *
864	SvSTATE (SV *coro)
865	{
866	HV *stash;
867	MAGIC *mg;
868
869	if (SvROK (coro))
870	coro = SvRV (coro);
871
872	stash = SvSTASH (coro);
873	if (stash != coro_stash && stash != coro_state_stash)
874	{
875	/* very slow, but rare, check */
876	if (!sv_derived_from (sv_2mortal (newRV_inc (coro)), "Coro::State"))
877	croak ("Coro::State object required");
878	}
879
880	mg = SvMAGIC (coro);
881	assert (mg->mg_type == PERL_MAGIC_ext);
882	return (struct coro *)mg->mg_ptr;
883	}
884
885	static void	1133	static void
886	prepare_transfer (struct transfer_args ta, SV prev, SV *next, int flags)	1134	prepare_transfer (pTHX_ struct transfer_args ta, SV prev_sv, SV *next_sv)
887	{	1135	{
888	ta->prev = SvSTATE (prev);	1136	ta->prev = SvSTATE (prev_sv);
889	ta->next = SvSTATE (next);	1137	ta->next = SvSTATE (next_sv);
890	ta->flags = flags;	1138	TRANSFER_CHECK (*ta);
891	}	1139	}
892		1140
893	static void	1141	static void
894	api_transfer (SV prev, SV next, int flags)	1142	api_transfer (SV prev_sv, SV next_sv)
895	{	1143	{
896	dTHX;	1144	dTHX;
897	struct transfer_args ta;	1145	struct transfer_args ta;
898		1146
899	prepare_transfer (&ta, prev, next, flags);	1147	prepare_transfer (aTHX_ &ta, prev_sv, next_sv);
900	TRANSFER (ta);	1148	TRANSFER (ta);
901	}	1149	}
902		1150
		1151	static int
		1152	api_save (SV *coro_sv, int new_save)
		1153	{
		1154	dTHX;
		1155	struct coro *coro = SvSTATE (coro_sv);
		1156	int old_save = coro->save;
		1157
		1158	if (new_save >= 0)
		1159	coro->save = new_save;
		1160
		1161	return old_save;
		1162	}
		1163
903	/ Coro ******************************************************************/	1164	/ Coro ******************************************************************/
904		1165
905	#define PRIO_MAX 3
906	#define PRIO_HIGH 1
907	#define PRIO_NORMAL 0
908	#define PRIO_LOW -1
909	#define PRIO_IDLE -3
910	#define PRIO_MIN -4
911
912	/* for Coro.pm */
913	static GV coro_current, coro_idle;
914	static AV *coro_ready [PRIO_MAX-PRIO_MIN+1];
915	static int coro_nready;
916
917	static void	1166	static void
918	coro_enq (SV *sv)	1167	coro_enq (pTHX_ SV *coro_sv)
919	{	1168	{
920	int prio;
921
922	if (SvTYPE (sv) != SVt_PVHV)
923	croak ("Coro::ready tried to enqueue something that is not a coroutine");
924
925	prio = SvSTATE (sv)->prio;
926
927	av_push (coro_ready [prio - PRIO_MIN], sv);	1169	av_push (coro_ready [SvSTATE (coro_sv)->prio - PRIO_MIN], coro_sv);
928	coro_nready++;
929	}	1170	}
930		1171
931	static SV *	1172	static SV *
932	coro_deq (int min_prio)	1173	coro_deq (pTHX_ int min_prio)
933	{	1174	{
934	int prio = PRIO_MAX - PRIO_MIN;	1175	int prio = PRIO_MAX - PRIO_MIN;
935		1176
936	min_prio -= PRIO_MIN;	1177	min_prio -= PRIO_MIN;
937	if (min_prio < 0)	1178	if (min_prio < 0)
938	min_prio = 0;	1179	min_prio = 0;
939		1180
940	for (prio = PRIO_MAX - PRIO_MIN + 1; --prio >= min_prio; )	1181	for (prio = PRIO_MAX - PRIO_MIN + 1; --prio >= min_prio; )
941	if (AvFILLp (coro_ready [prio]) >= 0)	1182	if (AvFILLp (coro_ready [prio]) >= 0)
942	{
943	coro_nready--;
944	return av_shift (coro_ready [prio]);	1183	return av_shift (coro_ready [prio]);
945	}
946		1184
947	return 0;	1185	return 0;
948	}	1186	}
949		1187
		1188	static int
		1189	api_ready (SV *coro_sv)
		1190	{
		1191	dTHX;
		1192	struct coro *coro;
		1193
		1194	if (SvROK (coro_sv))
		1195	coro_sv = SvRV (coro_sv);
		1196
		1197	coro = SvSTATE (coro_sv);
		1198
		1199	if (coro->flags & CF_READY)
		1200	return 0;
		1201
		1202	coro->flags \|= CF_READY;
		1203
		1204	LOCK;
		1205	coro_enq (aTHX_ SvREFCNT_inc (coro_sv));
		1206	++coro_nready;
		1207	UNLOCK;
		1208
		1209	return 1;
		1210	}
		1211
		1212	static int
		1213	api_is_ready (SV *coro_sv)
		1214	{
		1215	dTHX;
		1216	return !!(SvSTATE (coro_sv)->flags & CF_READY);
		1217	}
		1218
950	static void	1219	static void
951	api_ready (SV *coro)	1220	prepare_schedule (pTHX_ struct transfer_args *ta)
952	{	1221	{
953	dTHX;	1222	SV prev_sv, next_sv;
954		1223
955	if (SvROK (coro))	1224	for (;;)
956	coro = SvRV (coro);	1225	{
		1226	LOCK;
		1227	next_sv = coro_deq (aTHX_ PRIO_MIN);
		1228
		1229	/* nothing to schedule: call the idle handler */
		1230	if (!next_sv)
		1231	{
		1232	dSP;
		1233	UNLOCK;
		1234
		1235	ENTER;
		1236	SAVETMPS;
		1237
		1238	PUSHMARK (SP);
		1239	PUTBACK;
		1240	call_sv (get_sv ("Coro::idle", FALSE), G_DISCARD);
		1241
		1242	FREETMPS;
		1243	LEAVE;
		1244	continue;
		1245	}
		1246
		1247	ta->next = SvSTATE (next_sv);
		1248
		1249	/* cannot transfer to destroyed coros, skip and look for next */
		1250	if (ta->next->flags & CF_DESTROYED)
		1251	{
		1252	UNLOCK;
		1253	SvREFCNT_dec (next_sv);
		1254	/* coro_nready is already taken care of by destroy */
		1255	continue;
		1256	}
		1257
		1258	--coro_nready;
		1259	UNLOCK;
		1260	break;
		1261	}
		1262
		1263	/* free this only after the transfer */
		1264	prev_sv = SvRV (coro_current);
		1265	ta->prev = SvSTATE (prev_sv);
		1266	TRANSFER_CHECK (*ta);
		1267	assert (ta->next->flags & CF_READY);
		1268	ta->next->flags &= ~CF_READY;
		1269	SvRV_set (coro_current, next_sv);
957		1270
958	LOCK;	1271	LOCK;
959	coro_enq (SvREFCNT_inc (coro));	1272	free_coro_mortal (aTHX);
		1273	coro_mortal = prev_sv;
960	UNLOCK;	1274	UNLOCK;
961	}	1275	}
962		1276
963	static void	1277	static void
964	prepare_schedule (struct transfer_args *ta)
965	{
966	SV current, prev, *next;
967
968	current = GvSV (coro_current);
969
970	for (;;)
971	{
972	LOCK;
973	next = coro_deq (PRIO_MIN);
974	UNLOCK;
975
976	if (next)
977	break;
978
979	{
980	dSP;
981
982	ENTER;
983	SAVETMPS;
984
985	PUSHMARK (SP);
986	PUTBACK;
987	call_sv (GvSV (coro_idle), G_DISCARD);
988
989	FREETMPS;
990	LEAVE;
991	}
992	}
993
994	prev = SvRV (current);
995	SvRV (current) = next;
996
997	/* free this only after the transfer */
998	LOCK;
999	free_coro_mortal ();
1000	UNLOCK;
1001	coro_mortal = prev;
1002
1003	ta->prev = SvSTATE (prev);
1004	ta->next = SvSTATE (next);
1005	ta->flags = TRANSFER_SAVE_ALL;
1006	}
1007
1008	static void
1009	prepare_cede (struct transfer_args *ta)	1278	prepare_cede (pTHX_ struct transfer_args *ta)
1010	{	1279	{
1011	LOCK;	1280	api_ready (coro_current);
1012	coro_enq (SvREFCNT_inc (SvRV (GvSV (coro_current))));
1013	UNLOCK;
1014
1015	prepare_schedule (ta);	1281	prepare_schedule (aTHX_ ta);
		1282	}
		1283
		1284	static int
		1285	prepare_cede_notself (pTHX_ struct transfer_args *ta)
		1286	{
		1287	if (coro_nready)
		1288	{
		1289	SV *prev = SvRV (coro_current);
		1290	prepare_schedule (aTHX_ ta);
		1291	api_ready (prev);
		1292	return 1;
		1293	}
		1294	else
		1295	return 0;
1016	}	1296	}
1017		1297
1018	static void	1298	static void
1019	api_schedule (void)	1299	api_schedule (void)
1020	{	1300	{
1021	dTHX;	1301	dTHX;
1022	struct transfer_args ta;	1302	struct transfer_args ta;
1023		1303
1024	prepare_schedule (&ta);	1304	prepare_schedule (aTHX_ &ta);
1025	TRANSFER (ta);	1305	TRANSFER (ta);
1026	}	1306	}
1027		1307
1028	static void	1308	static int
1029	api_cede (void)	1309	api_cede (void)
1030	{	1310	{
1031	dTHX;	1311	dTHX;
1032	struct transfer_args ta;	1312	struct transfer_args ta;
1033		1313
1034	prepare_cede (&ta);	1314	prepare_cede (aTHX_ &ta);
		1315
		1316	if (ta.prev != ta.next)
		1317	{
1035	TRANSFER (ta);	1318	TRANSFER (ta);
		1319	return 1;
		1320	}
		1321	else
		1322	return 0;
		1323	}
		1324
		1325	static int
		1326	api_cede_notself (void)
		1327	{
		1328	dTHX;
		1329	struct transfer_args ta;
		1330
		1331	if (prepare_cede_notself (aTHX_ &ta))
		1332	{
		1333	TRANSFER (ta);
		1334	return 1;
		1335	}
		1336	else
		1337	return 0;
1036	}	1338	}
1037		1339
1038	MODULE = Coro::State PACKAGE = Coro::State	1340	MODULE = Coro::State PACKAGE = Coro::State
1039		1341
1040	PROTOTYPES: DISABLE	1342	PROTOTYPES: DISABLE
…		…
1046	#endif	1348	#endif
1047	BOOT_PAGESIZE;	1349	BOOT_PAGESIZE;
1048		1350
1049	coro_state_stash = gv_stashpv ("Coro::State", TRUE);	1351	coro_state_stash = gv_stashpv ("Coro::State", TRUE);
1050		1352
		1353	newCONSTSUB (coro_state_stash, "CC_TRACE" , newSViv (CC_TRACE));
		1354	newCONSTSUB (coro_state_stash, "CC_TRACE_SUB" , newSViv (CC_TRACE_SUB));
		1355	newCONSTSUB (coro_state_stash, "CC_TRACE_LINE", newSViv (CC_TRACE_LINE));
		1356	newCONSTSUB (coro_state_stash, "CC_TRACE_ALL" , newSViv (CC_TRACE_ALL));
		1357
1051	newCONSTSUB (coro_state_stash, "SAVE_DEFAV", newSViv (TRANSFER_SAVE_DEFAV));	1358	newCONSTSUB (coro_state_stash, "SAVE_DEFAV", newSViv (CORO_SAVE_DEFAV));
1052	newCONSTSUB (coro_state_stash, "SAVE_DEFSV", newSViv (TRANSFER_SAVE_DEFSV));	1359	newCONSTSUB (coro_state_stash, "SAVE_DEFSV", newSViv (CORO_SAVE_DEFSV));
1053	newCONSTSUB (coro_state_stash, "SAVE_ERRSV", newSViv (TRANSFER_SAVE_ERRSV));	1360	newCONSTSUB (coro_state_stash, "SAVE_ERRSV", newSViv (CORO_SAVE_ERRSV));
		1361	newCONSTSUB (coro_state_stash, "SAVE_IRSSV", newSViv (CORO_SAVE_IRSSV));
		1362	newCONSTSUB (coro_state_stash, "SAVE_DEFFH", newSViv (CORO_SAVE_DEFFH));
		1363	newCONSTSUB (coro_state_stash, "SAVE_DEF", newSViv (CORO_SAVE_DEF));
		1364	newCONSTSUB (coro_state_stash, "SAVE_ALL", newSViv (CORO_SAVE_ALL));
1054		1365
1055	main_mainstack = PL_mainstack;	1366	main_mainstack = PL_mainstack;
		1367	main_top_env = PL_top_env;
		1368
		1369	while (main_top_env->je_prev)
		1370	main_top_env = main_top_env->je_prev;
1056		1371
1057	coroapi.ver = CORO_API_VERSION;	1372	coroapi.ver = CORO_API_VERSION;
1058	coroapi.transfer = api_transfer;	1373	coroapi.transfer = api_transfer;
1059		1374
1060	assert (("PRIO_NORMAL must be 0", !PRIO_NORMAL));	1375	assert (("PRIO_NORMAL must be 0", !PRIO_NORMAL));
…		…
1068	HV *hv;	1383	HV *hv;
1069	int i;	1384	int i;
1070		1385
1071	Newz (0, coro, 1, struct coro);	1386	Newz (0, coro, 1, struct coro);
1072	coro->args = newAV ();	1387	coro->args = newAV ();
		1388	coro->save = CORO_SAVE_DEF;
		1389	coro->flags = CF_NEW;
1073		1390
		1391	if (coro_first) coro_first->prev = coro;
		1392	coro->next = coro_first;
		1393	coro_first = coro;
		1394
1074	hv = newHV ();	1395	coro->hv = hv = newHV ();
1075	sv_magicext ((SV )hv, 0, PERL_MAGIC_ext, &coro_state_vtbl, (char )coro, 0)->mg_flags \|= MGf_DUP;	1396	sv_magicext ((SV )hv, 0, PERL_MAGIC_ext, &coro_state_vtbl, (char )coro, 0)->mg_flags \|= MGf_DUP;
1076	RETVAL = sv_bless (newRV_noinc ((SV *)hv), gv_stashpv (klass, 1));	1397	RETVAL = sv_bless (newRV_noinc ((SV *)hv), gv_stashpv (klass, 1));
1077		1398
1078	for (i = 1; i < items; i++)	1399	for (i = 1; i < items; i++)
1079	av_push (coro->args, newSVsv (ST (i)));	1400	av_push (coro->args, newSVsv (ST (i)));
1080
1081	/coro->mainstack = 0; //actual work is done inside transfer /
1082	/coro->stack = 0;/
1083	}	1401	}
1084	OUTPUT:	1402	OUTPUT:
		1403	RETVAL
		1404
		1405	int
		1406	save (SV *coro, int new_save = -1)
		1407	CODE:
		1408	RETVAL = api_save (coro, new_save);
		1409	OUTPUT:
		1410	RETVAL
		1411
		1412	int
		1413	save_also (SV *coro_sv, int save_also)
		1414	CODE:
		1415	{
		1416	struct coro *coro = SvSTATE (coro_sv);
		1417	RETVAL = coro->save;
		1418	coro->save \|= save_also;
		1419	}
		1420	OUTPUT:
1085	RETVAL	1421	RETVAL
1086		1422
1087	void	1423	void
1088	_set_stacklevel (...)	1424	_set_stacklevel (...)
1089	ALIAS:	1425	ALIAS:
1090	Coro::State::transfer = 1	1426	Coro::State::transfer = 1
1091	Coro::schedule = 2	1427	Coro::schedule = 2
1092	Coro::cede = 3	1428	Coro::cede = 3
1093	Coro::Cont::yield = 4	1429	Coro::cede_notself = 4
1094	CODE:	1430	CODE:
1095	{	1431	{
1096	struct transfer_args ta;	1432	struct transfer_args ta;
1097		1433
1098	switch (ix)	1434	switch (ix)
1099	{	1435	{
1100	case 0:	1436	case 0:
1101	ta.prev = (struct coro )INT2PTR (coro_stack , SvIV (ST (0)));	1437	ta.prev = (struct coro )INT2PTR (coro_cctx , SvIV (ST (0)));
1102	ta.next = 0;	1438	ta.next = 0;
1103	ta.flags = TRANSFER_SET_STACKLEVEL;
1104	break;	1439	break;
1105		1440
1106	case 1:	1441	case 1:
1107	if (items != 3)	1442	if (items != 2)
1108	croak ("Coro::State::transfer(prev,next,flags) expects three arguments, not %d", items);	1443	croak ("Coro::State::transfer (prev,next) expects two arguments, not %d", items);
1109		1444
1110	prepare_transfer (&ta, ST (0), ST (1), SvIV (ST (2)));	1445	prepare_transfer (aTHX_ &ta, ST (0), ST (1));
1111	break;	1446	break;
1112		1447
1113	case 2:	1448	case 2:
1114	prepare_schedule (&ta);	1449	prepare_schedule (aTHX_ &ta);
1115	break;	1450	break;
1116		1451
1117	case 3:	1452	case 3:
1118	prepare_cede (&ta);	1453	prepare_cede (aTHX_ &ta);
1119	break;	1454	break;
1120		1455
1121	case 4:	1456	case 4:
1122	{	1457	if (!prepare_cede_notself (aTHX_ &ta))
1123	SV *yieldstack;	1458	XSRETURN_EMPTY;
1124	SV *sv;
1125	AV *defav = GvAV (PL_defgv);
1126		1459
1127	yieldstack = *hv_fetch (
1128	(HV *)SvRV (GvSV (coro_current)),
1129	"yieldstack", sizeof ("yieldstack") - 1,
1130	0
1131	);
1132
1133	/* set up @_ -- ugly */
1134	av_clear (defav);
1135	av_fill (defav, items - 1);
1136	while (items--)
1137	av_store (defav, items, SvREFCNT_inc (ST(items)));
1138
1139	sv = av_pop ((AV *)SvRV (yieldstack));
1140	ta.prev = SvSTATE (av_fetch ((AV )SvRV (sv), 0, 0));
1141	ta.next = SvSTATE (av_fetch ((AV )SvRV (sv), 1, 0));
1142	ta.flags = 0;
1143	SvREFCNT_dec (sv);
1144	}
1145	break;	1460	break;
1146
1147	}	1461	}
1148		1462
		1463	BARRIER;
1149	TRANSFER (ta);	1464	TRANSFER (ta);
1150	}
1151		1465
1152	void	1466	if (GIMME_V != G_VOID && ta.next != ta.prev)
1153	_clone_state_from (SV dst, SV src)	1467	XSRETURN_YES;
		1468	}
		1469
		1470	bool
		1471	_destroy (SV *coro_sv)
1154	CODE:	1472	CODE:
1155	{	1473	RETVAL = coro_state_destroy (aTHX_ SvSTATE (coro_sv));
1156	struct coro *coro_src = SvSTATE (src);	1474	OUTPUT:
1157		1475	RETVAL
1158	sv_unmagic (SvRV (dst), PERL_MAGIC_ext);
1159
1160	++coro_src->refcnt;
1161	sv_magicext (SvRV (dst), 0, PERL_MAGIC_ext, &coro_state_vtbl, (char *)coro_src, 0)->mg_flags \|= MGf_DUP;
1162	}
1163		1476
1164	void	1477	void
1165	_exit (code)	1478	_exit (code)
1166	int code	1479	int code
1167	PROTOTYPE: $	1480	PROTOTYPE: $
1168	CODE:	1481	CODE:
1169	_exit (code);	1482	_exit (code);
1170		1483
		1484	int
		1485	cctx_stacksize (int new_stacksize = 0)
		1486	CODE:
		1487	RETVAL = coro_stacksize;
		1488	if (new_stacksize)
		1489	coro_stacksize = new_stacksize;
		1490	OUTPUT:
		1491	RETVAL
		1492
		1493	int
		1494	cctx_count ()
		1495	CODE:
		1496	RETVAL = cctx_count;
		1497	OUTPUT:
		1498	RETVAL
		1499
		1500	int
		1501	cctx_idle ()
		1502	CODE:
		1503	RETVAL = cctx_idle;
		1504	OUTPUT:
		1505	RETVAL
		1506
		1507	void
		1508	list ()
		1509	PPCODE:
		1510	{
		1511	struct coro *coro;
		1512	for (coro = coro_first; coro; coro = coro->next)
		1513	if (coro->hv)
		1514	XPUSHs (sv_2mortal (newRV_inc ((SV *)coro->hv)));
		1515	}
		1516
		1517	void
		1518	call (Coro::State coro, SV *coderef)
		1519	ALIAS:
		1520	eval = 1
		1521	CODE:
		1522	{
		1523	if (coro->mainstack)
		1524	{
		1525	struct coro temp;
		1526	Zero (&temp, 1, struct coro);
		1527	temp.save = CORO_SAVE_ALL;
		1528
		1529	if (!(coro->flags & CF_RUNNING))
		1530	{
		1531	save_perl (aTHX_ &temp);
		1532	load_perl (aTHX_ coro);
		1533	}
		1534
		1535	{
		1536	dSP;
		1537	ENTER;
		1538	SAVETMPS;
		1539	PUSHMARK (SP);
		1540	PUTBACK;
		1541	if (ix)
		1542	eval_sv (coderef, 0);
		1543	else
		1544	call_sv (coderef, G_KEEPERR \| G_EVAL \| G_VOID \| G_DISCARD);
		1545	SPAGAIN;
		1546	FREETMPS;
		1547	LEAVE;
		1548	PUTBACK;
		1549	}
		1550
		1551	if (!(coro->flags & CF_RUNNING))
		1552	{
		1553	save_perl (aTHX_ coro);
		1554	load_perl (aTHX_ &temp);
		1555	}
		1556	}
		1557	}
		1558
		1559	SV *
		1560	is_ready (Coro::State coro)
		1561	PROTOTYPE: $
		1562	ALIAS:
		1563	is_ready = CF_READY
		1564	is_running = CF_RUNNING
		1565	is_new = CF_NEW
		1566	is_destroyed = CF_DESTROYED
		1567	CODE:
		1568	RETVAL = boolSV (coro->flags & ix);
		1569	OUTPUT:
		1570	RETVAL
		1571
		1572	void
		1573	trace (Coro::State coro, int flags = CC_TRACE \| CC_TRACE_SUB)
		1574	CODE:
		1575	if (flags & CC_TRACE)
		1576	{
		1577	if (!coro->cctx)
		1578	coro->cctx = cctx_new ();
		1579	else if (!(coro->cctx->flags & CC_TRACE))
		1580	croak ("cannot enable tracing on coroutine with custom stack");
		1581
		1582	coro->cctx->flags \|= flags & (CC_TRACE \| CC_TRACE_ALL);
		1583	}
		1584	else
		1585	if (coro->cctx && coro->cctx->flags & CC_TRACE)
		1586	{
		1587	coro->cctx->flags &= ~(CC_TRACE \| CC_TRACE_ALL);
		1588	coro->cctx->flags \|= CC_NOREUSE;
		1589
		1590	if (coro->flags & CF_RUNNING)
		1591	PL_runops = RUNOPS_DEFAULT;
		1592	else
		1593	coro->runops = RUNOPS_DEFAULT;
		1594	}
		1595
		1596	SV *
		1597	has_stack (Coro::State coro)
		1598	PROTOTYPE: $
		1599	CODE:
		1600	RETVAL = boolSV (!!coro->cctx);
		1601	OUTPUT:
		1602	RETVAL
		1603
		1604	int
		1605	is_traced (Coro::State coro)
		1606	PROTOTYPE: $
		1607	CODE:
		1608	RETVAL = (coro->cctx ? coro->cctx->flags : 0) & CC_TRACE_ALL;
		1609	OUTPUT:
		1610	RETVAL
		1611
		1612	IV
		1613	rss (Coro::State coro)
		1614	PROTOTYPE: $
		1615	CODE:
		1616	RETVAL = coro_rss (coro);
		1617	OUTPUT:
		1618	RETVAL
		1619
		1620
1171	MODULE = Coro::State PACKAGE = Coro	1621	MODULE = Coro::State PACKAGE = Coro
1172		1622
1173	BOOT:	1623	BOOT:
1174	{	1624	{
1175	int i;	1625	int i;
		1626
		1627	sv_pool_rss = get_sv ("Coro::POOL_RSS" , TRUE);
		1628	sv_pool_size = get_sv ("Coro::POOL_SIZE" , TRUE);
		1629	av_async_pool = get_av ("Coro::async_pool", TRUE);
		1630
		1631	coro_current = get_sv ("Coro::current", FALSE);
		1632	SvREADONLY_on (coro_current);
1176		1633
1177	coro_stash = gv_stashpv ("Coro", TRUE);	1634	coro_stash = gv_stashpv ("Coro", TRUE);
1178		1635
1179	newCONSTSUB (coro_stash, "PRIO_MAX", newSViv (PRIO_MAX));	1636	newCONSTSUB (coro_stash, "PRIO_MAX", newSViv (PRIO_MAX));
1180	newCONSTSUB (coro_stash, "PRIO_HIGH", newSViv (PRIO_HIGH));	1637	newCONSTSUB (coro_stash, "PRIO_HIGH", newSViv (PRIO_HIGH));
1181	newCONSTSUB (coro_stash, "PRIO_NORMAL", newSViv (PRIO_NORMAL));	1638	newCONSTSUB (coro_stash, "PRIO_NORMAL", newSViv (PRIO_NORMAL));
1182	newCONSTSUB (coro_stash, "PRIO_LOW", newSViv (PRIO_LOW));	1639	newCONSTSUB (coro_stash, "PRIO_LOW", newSViv (PRIO_LOW));
1183	newCONSTSUB (coro_stash, "PRIO_IDLE", newSViv (PRIO_IDLE));	1640	newCONSTSUB (coro_stash, "PRIO_IDLE", newSViv (PRIO_IDLE));
1184	newCONSTSUB (coro_stash, "PRIO_MIN", newSViv (PRIO_MIN));	1641	newCONSTSUB (coro_stash, "PRIO_MIN", newSViv (PRIO_MIN));
1185		1642
1186	coro_current = gv_fetchpv ("Coro::current", TRUE, SVt_PV);
1187	coro_idle = gv_fetchpv ("Coro::idle" , TRUE, SVt_PV);
1188
1189	for (i = PRIO_MAX - PRIO_MIN + 1; i--; )	1643	for (i = PRIO_MAX - PRIO_MIN + 1; i--; )
1190	coro_ready[i] = newAV ();	1644	coro_ready[i] = newAV ();
1191		1645
1192	{	1646	{
1193	SV *sv = perl_get_sv("Coro::API", 1);	1647	SV *sv = perl_get_sv("Coro::API", 1);
1194		1648
1195	coroapi.schedule = api_schedule;	1649	coroapi.schedule = api_schedule;
		1650	coroapi.save = api_save;
1196	coroapi.cede = api_cede;	1651	coroapi.cede = api_cede;
		1652	coroapi.cede_notself = api_cede_notself;
1197	coroapi.ready = api_ready;	1653	coroapi.ready = api_ready;
		1654	coroapi.is_ready = api_is_ready;
1198	coroapi.nready = &coro_nready;	1655	coroapi.nready = &coro_nready;
1199	coroapi.current = coro_current;	1656	coroapi.current = coro_current;
1200		1657
1201	GCoroAPI = &coroapi;	1658	GCoroAPI = &coroapi;
1202	sv_setiv (sv, (IV)&coroapi);	1659	sv_setiv (sv, (IV)&coroapi);
1203	SvREADONLY_on (sv);	1660	SvREADONLY_on (sv);
1204	}	1661	}
1205	}	1662	}
		1663
		1664	void
		1665	_set_current (SV *current)
		1666	PROTOTYPE: $
		1667	CODE:
		1668	SvREFCNT_dec (SvRV (coro_current));
		1669	SvRV_set (coro_current, SvREFCNT_inc (SvRV (current)));
1206		1670
1207	int	1671	int
1208	prio (Coro::State coro, int newprio = 0)	1672	prio (Coro::State coro, int newprio = 0)
1209	ALIAS:	1673	ALIAS:
1210	nice = 1	1674	nice = 1
…		…
1213	RETVAL = coro->prio;	1677	RETVAL = coro->prio;
1214		1678
1215	if (items > 1)	1679	if (items > 1)
1216	{	1680	{
1217	if (ix)	1681	if (ix)
1218	newprio += coro->prio;	1682	newprio = coro->prio - newprio;
1219		1683
1220	if (newprio < PRIO_MIN) newprio = PRIO_MIN;	1684	if (newprio < PRIO_MIN) newprio = PRIO_MIN;
1221	if (newprio > PRIO_MAX) newprio = PRIO_MAX;	1685	if (newprio > PRIO_MAX) newprio = PRIO_MAX;
1222		1686
1223	coro->prio = newprio;	1687	coro->prio = newprio;
1224	}	1688	}
1225	}	1689	}
		1690	OUTPUT:
		1691	RETVAL
1226		1692
1227	void	1693	SV *
1228	ready (SV *self)	1694	ready (SV *self)
1229	PROTOTYPE: $	1695	PROTOTYPE: $
1230	CODE:	1696	CODE:
1231	api_ready (self);	1697	RETVAL = boolSV (api_ready (self));
		1698	OUTPUT:
		1699	RETVAL
1232		1700
1233	int	1701	int
1234	nready (...)	1702	nready (...)
1235	PROTOTYPE:	1703	PROTOTYPE:
1236	CODE:	1704	CODE:
1237	RETVAL = coro_nready;	1705	RETVAL = coro_nready;
1238	OUTPUT:	1706	OUTPUT:
1239	RETVAL	1707	RETVAL
1240		1708
		1709	# for async_pool speedup
		1710	void
		1711	_pool_1 (SV *cb)
		1712	CODE:
		1713	{
		1714	int i, len;
		1715	HV hv = (HV )SvRV (coro_current);
		1716	AV *defav = GvAV (PL_defgv);
		1717	SV *invoke = hv_delete (hv, "_invoke", sizeof ("_invoke") - 1, 0);
		1718	AV *invoke_av;
		1719
		1720	if (!invoke)
		1721	croak ("\3terminate\2\n");
		1722
		1723	hv_store (hv, "desc", sizeof ("desc") - 1,
		1724	newSVpvn ("[async_pool]", sizeof ("[async_pool]") - 1), 0);
		1725
		1726	invoke_av = (AV *)SvRV (invoke);
		1727	len = av_len (invoke_av);
		1728
		1729	sv_setsv (cb, AvARRAY (invoke_av)[0]);
		1730
		1731	if (len > 0)
		1732	{
		1733	av_fill (defav, len - 1);
		1734	for (i = 0; i < len; ++i)
		1735	av_store (defav, i, SvREFCNT_inc (AvARRAY (invoke_av)[i + 1]));
		1736	}
		1737
		1738	SvREFCNT_dec (invoke);
		1739	}
		1740
		1741	void
		1742	_pool_2 (SV *cb)
		1743	CODE:
		1744	{
		1745	struct coro *coro = SvSTATE (coro_current);
		1746
		1747	sv_setsv (cb, &PL_sv_undef);
		1748
		1749	if (coro_rss (coro) > SvIV (sv_pool_rss)
		1750	\|\| av_len (av_async_pool) + 1 >= SvIV (sv_pool_size))
		1751	croak ("\3terminate\2\n");
		1752
		1753	av_clear (GvAV (PL_defgv));
		1754	hv_store ((HV *)SvRV (coro_current), "desc", sizeof ("desc") - 1,
		1755	newSVpvn ("[async_pool idle]", sizeof ("[async_pool idle]") - 1), 0);
		1756	coro->save = CORO_SAVE_DEF;
		1757	coro->prio = 0;
		1758	av_push (av_async_pool, newSVsv (coro_current));
		1759	}
		1760
		1761
1241	MODULE = Coro::State PACKAGE = Coro::AIO	1762	MODULE = Coro::State PACKAGE = Coro::AIO
1242		1763
1243	SV *	1764	SV *
1244	_get_state ()	1765	_get_state ()
1245	CODE:	1766	CODE:
1246	{	1767	{
1247	struct {	1768	struct io_state *data;
1248	int errorno;
1249	int laststype;
1250	int laststatval;
1251	Stat_t statcache;
1252	} data;
1253		1769
		1770	RETVAL = newSV (sizeof (struct io_state));
		1771	data = (struct io_state *)SvPVX (RETVAL);
		1772	SvCUR_set (RETVAL, sizeof (struct io_state));
		1773	SvPOK_only (RETVAL);
		1774
1254	data.errorno = errno;	1775	data->errorno = errno;
1255	data.laststype = PL_laststype;	1776	data->laststype = PL_laststype;
1256	data.laststatval = PL_laststatval;	1777	data->laststatval = PL_laststatval;
1257	data.statcache = PL_statcache;	1778	data->statcache = PL_statcache;
1258
1259	RETVAL = newSVpvn ((char *)&data, sizeof data);
1260	}	1779	}
1261	OUTPUT:	1780	OUTPUT:
1262	RETVAL	1781	RETVAL
1263		1782
1264	void	1783	void
1265	_set_state (char *data_)	1784	_set_state (char *data_)
1266	PROTOTYPE: $	1785	PROTOTYPE: $
1267	CODE:	1786	CODE:
1268	{	1787	{
1269	struct {	1788	struct io_state data = (void )data_;
1270	int errorno;
1271	int laststype;
1272	int laststatval;
1273	Stat_t statcache;
1274	} data = (void )data_;
1275		1789
1276	errno = data->errorno;	1790	errno = data->errorno;
1277	PL_laststype = data->laststype;	1791	PL_laststype = data->laststype;
1278	PL_laststatval = data->laststatval;	1792	PL_laststatval = data->laststatval;
1279	PL_statcache = data->statcache;	1793	PL_statcache = data->statcache;
1280	}	1794	}
		1795

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Comparing Coro/Coro/State.xs (file contents): Revision 1.105 by root, Mon Nov 27 02:01:33 2006 UTC vs. Revision 1.170 by root, Thu Sep 27 20:14:49 2007 UTC

Diff Legend

Comparing Coro/Coro/State.xs (file contents):
Revision 1.105 by root, Mon Nov 27 02:01:33 2006 UTC vs.
Revision 1.170 by root, Thu Sep 27 20:14:49 2007 UTC