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

Comparing Coro/Coro/State.xs (file contents):
Revision 1.73 by root, Sat Feb 4 06:01:13 2006 UTC vs.
Revision 1.172 by root, Sun Sep 30 13:15:01 2007 UTC

…		…
		1	#include "libcoro/coro.c"
		2
1	#define PERL_NO_GET_CONTEXT	3	#define PERL_NO_GET_CONTEXT
2
3	#include "libcoro/coro.c"
4		4
5	#include "EXTERN.h"	5	#include "EXTERN.h"
6	#include "perl.h"	6	#include "perl.h"
7	#include "XSUB.h"	7	#include "XSUB.h"
8		8
9	#include "patchlevel.h"	9	#include "patchlevel.h"
10		10
11	#if PERL_VERSION < 6	11	#include <stdio.h>
		12	#include <errno.h>
		13	#include <assert.h>
		14
		15	#ifdef HAVE_MMAP
		16	# include <unistd.h>
		17	# include <sys/mman.h>
		18	# ifndef MAP_ANONYMOUS
		19	# ifdef MAP_ANON
		20	# define MAP_ANONYMOUS MAP_ANON
		21	# else
		22	# undef HAVE_MMAP
		23	# endif
		24	# endif
		25	# include <limits.h>
		26	# ifndef PAGESIZE
		27	# define PAGESIZE pagesize
		28	# define BOOT_PAGESIZE pagesize = sysconf (_SC_PAGESIZE)
		29	static long pagesize;
		30	# else
		31	# define BOOT_PAGESIZE (void)0
		32	# endif
		33	#else
		34	# define PAGESIZE 0
		35	# define BOOT_PAGESIZE (void)0
		36	#endif
		37
		38	#if CORO_USE_VALGRIND
		39	# include <valgrind/valgrind.h>
		40	# define REGISTER_STACK(cctx,start,end) (cctx)->valgrind_id = VALGRIND_STACK_REGISTER ((start), (end))
		41	#else
		42	# define REGISTER_STACK(cctx,start,end)
		43	#endif
		44
		45	/* the maximum number of idle cctx that will be pooled */
		46	#define MAX_IDLE_CCTX 8
		47
		48	#define PERL_VERSION_ATLEAST(a,b,c) \
		49	(PERL_REVISION > (a) \
		50	\|\| (PERL_REVISION == (a) \
		51	&& (PERL_VERSION > (b) \
		52	\|\| (PERL_VERSION == (b) && PERLSUBVERSION >= (c)))))
		53
		54	#if !PERL_VERSION_ATLEAST (5,6,0)
12	# ifndef PL_ppaddr	55	# ifndef PL_ppaddr
13	# define PL_ppaddr ppaddr	56	# define PL_ppaddr ppaddr
14	# endif	57	# endif
15	# ifndef call_sv	58	# ifndef call_sv
16	# define call_sv perl_call_sv	59	# define call_sv perl_call_sv
27	# ifndef IS_PADCONST	70	# ifndef IS_PADCONST
28	# define IS_PADCONST(v) 0	71	# define IS_PADCONST(v) 0
29	# endif	72	# endif
30	#endif	73	#endif
31		74
32	#include <errno.h>	75	/* 5.8.7 */
33	#include <signal.h>	76	#ifndef SvRV_set
34		77	# define SvRV_set(s,v) SvRV(s) = (v)
35	#ifdef HAVE_MMAP
36	# include <unistd.h>
37	# include <sys/mman.h>
38	# ifndef MAP_ANONYMOUS
39	# ifdef MAP_ANON
40	# define MAP_ANONYMOUS MAP_ANON
41	# else
42	# undef HAVE_MMAP
43	# endif
44	# endif	78	#endif
45	#endif
46		79
47	#define SUB_INIT "Coro::State::initialize"	80	#if !__i386 && !__x86_64 && !__powerpc && !__m68k && !__alpha && !__mips && !__sparc64
48	#define UCORO_STATE "_coro_state"	81	# undef CORO_STACKGUARD
		82	#endif
49		83
50	/* The next macro should declare a variable stacklevel that contains and approximation	84	#ifndef CORO_STACKGUARD
51	* to the current C stack pointer. Its property is that it changes with each call	85	# define CORO_STACKGUARD 0
52	* and should be unique. */	86	#endif
		87
		88	/* prefer perl internal functions over our own? */
		89	#ifndef CORO_PREFER_PERL_FUNCTIONS
		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. */
		95	#define dSTACKLEVEL volatile char stacklevel
53	#define dSTACKLEVEL void *stacklevel = &stacklevel	96	#define STACKLEVEL ((void *)&stacklevel)
54		97
55	#define IN_DESTRUCT (PL_main_cv == Nullcv)	98	#define IN_DESTRUCT (PL_main_cv == Nullcv)
56		99
57	#define labs(l) ((l) >= 0 ? (l) : -(l))	100	#if __GNUC__ >= 3
		101	# define attribute(x) __attribute__(x)
		102	# define BARRIER __asm__ __volatile__ ("" : : : "memory")
		103	#else
		104	# define attribute(x)
		105	# define BARRIER
		106	#endif
		107
		108	#define NOINLINE attribute ((noinline))
58		109
59	#include "CoroAPI.h"	110	#include "CoroAPI.h"
60		111
61	#ifdef USE_ITHREADS	112	#ifdef USE_ITHREADS
62	static perl_mutex coro_mutex;	113	static perl_mutex coro_mutex;
…		…
65	#else	116	#else
66	# define LOCK (void)0	117	# define LOCK (void)0
67	# define UNLOCK (void)0	118	# define UNLOCK (void)0
68	#endif	119	#endif
69		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;
70	static struct CoroAPI coroapi;	131	static struct CoroAPI coroapi;
71	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;
72	static HV *coro_state_stash;	134	static HV coro_state_stash, coro_stash;
73	static SV *ucoro_state_sv;
74	static U32 ucoro_state_hash;
75	static SV coro_mortal; / will be freed after next transfer */	135	static SV coro_mortal; / will be freed after next transfer */
76		136
77	/* this is actually not only the c stack but also c registers etc... */	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
		154	/* this is a structure representing a c-level coroutine */
78	typedef struct {	155	typedef struct coro_cctx {
79	int refcnt; /* pointer reference counter */	156	struct coro_cctx *next;
80	int usecnt; /* shared by how many coroutines */
81	int gencnt; /* generation counter */
82		157
		158	/* the stack */
		159	void *sptr;
		160	size_t ssize;
		161
		162	/* cpu state */
		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 */
		165	JMPENV *top_env;
83	coro_context cctx;	166	coro_context cctx;
84		167
85	void *sptr;	168	#if CORO_USE_VALGRIND
86	long ssize; /* positive == mmap, otherwise malloc */	169	int valgrind_id;
87	} coro_stack;	170	#endif
		171	unsigned char flags;
		172	} coro_cctx;
88		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	};
		180
		181	/* this is a structure representing a perl-level coroutine */
89	struct coro {	182	struct coro {
90	/* the top-level JMPENV for each coroutine, needed to catch dies. */	183	/* the c coroutine allocated to this perl coroutine, if any */
91	JMPENV start_env;	184	coro_cctx *cctx;
92
93	/* the optional C context */
94	coro_stack *stack;
95	void *cursp;
96	int gencnt;
97
98	/* optionally saved, might be zero */
99	AV *defav;
100	SV *defsv;
101	SV *errsv;
102
103	/* saved global state not related to stacks */
104	U8 dowarn;
105	I32 in_eval;
106
107	/* the stacks and related info (callchain etc..) */
108	PERL_SI *curstackinfo;
109	AV *curstack;
110	AV *mainstack;
111	SV **stack_sp;
112	OP *op;
113	SV **curpad;
114	AV *comppad;
115	CV *compcv;
116	SV **stack_base;
117	SV **stack_max;
118	SV **tmps_stack;
119	I32 tmps_floor;
120	I32 tmps_ix;
121	I32 tmps_max;
122	I32 *markstack;
123	I32 *markstack_ptr;
124	I32 *markstack_max;
125	I32 *scopestack;
126	I32 scopestack_ix;
127	I32 scopestack_max;
128	ANY *savestack;
129	I32 savestack_ix;
130	I32 savestack_max;
131	OP **retstack;
132	I32 retstack_ix;
133	I32 retstack_max;
134	PMOP *curpm;
135	COP *curcop;
136	JMPENV *top_env;
137		185
138	/* data associated with this coroutine (initial args) */	186	/* data associated with this coroutine (initial args) */
139	AV *args;	187	AV *args;
		188	int refcnt;
		189	int save; /* CORO_SAVE flags */
		190	int flags; /* CF_ flags */
		191
		192	/* optionally saved, might be zero */
		193	AV defav; / @_ */
		194	SV defsv; / $_ */
		195	SV errsv; / $@ */
		196	GV deffh; / default filehandle */
		197	SV irssv; / $/ */
		198	SV irssv_sv; / real $/ cache */
		199
		200	#define VAR(name,type) type name;
		201	# include "state.h"
		202	#undef VAR
		203
		204	/* statistics */
		205	int usecount; /* number of switches to this coro */
		206
		207	/* coro process data */
		208	int prio;
		209
		210	/* linked list */
		211	struct coro next, prev;
		212	HV hv; / the perl hash associated with this coro, if any */
140	};	213	};
141		214
142	typedef struct coro *Coro__State;	215	typedef struct coro *Coro__State;
143	typedef struct coro *Coro__State_or_hashref;	216	typedef struct coro *Coro__State_or_hashref;
144		217
145	/* mostly copied from op.c:cv_clone2 */	218	/ Coro ******************************************************************/
146	STATIC AV *	219
147	clone_padlist (pTHX_ AV *protopadlist)	220	#define PRIO_MAX 3
		221	#define PRIO_HIGH 1
		222	#define PRIO_NORMAL 0
		223	#define PRIO_LOW -1
		224	#define PRIO_IDLE -3
		225	#define PRIO_MIN -4
		226
		227	/* for Coro.pm */
		228	static SV *coro_current;
		229	static AV *coro_ready [PRIO_MAX-PRIO_MIN+1];
		230	static int coro_nready;
		231	static struct coro *coro_first;
		232
		233	/ lowlevel stuff ********************************************************/
		234
		235	static AV *
		236	coro_clone_padlist (pTHX_ CV *cv)
148	{	237	{
149	AV *av;	238	AV *padlist = CvPADLIST (cv);
150	I32 ix;
151	AV protopad_name = (AV ) * av_fetch (protopadlist, 0, FALSE);
152	AV protopad = (AV ) * av_fetch (protopadlist, 1, FALSE);
153	SV **pname = AvARRAY (protopad_name);
154	SV **ppad = AvARRAY (protopad);
155	I32 fname = AvFILLp (protopad_name);
156	I32 fpad = AvFILLp (protopad);
157	AV newpadlist, newpad_name, *newpad;	239	AV newpadlist, newpad;
158	SV **npad;
159
160	newpad_name = newAV ();
161	for (ix = fname; ix >= 0; ix--)
162	av_store (newpad_name, ix, SvREFCNT_inc (pname[ix]));
163
164	newpad = newAV ();
165	av_fill (newpad, AvFILLp (protopad));
166	npad = AvARRAY (newpad);
167		240
168	newpadlist = newAV ();	241	newpadlist = newAV ();
169	AvREAL_off (newpadlist);	242	AvREAL_off (newpadlist);
170	av_store (newpadlist, 0, (SV *) newpad_name);	243	#if PERL_VERSION_ATLEAST (5,9,0)
		244	Perl_pad_push (aTHX_ padlist, AvFILLp (padlist) + 1);
		245	#else
		246	Perl_pad_push (aTHX_ padlist, AvFILLp (padlist) + 1, 1);
		247	#endif
		248	newpad = (AV *)AvARRAY (padlist)[AvFILLp (padlist)];
		249	--AvFILLp (padlist);
		250
		251	av_store (newpadlist, 0, SvREFCNT_inc (*av_fetch (padlist, 0, FALSE)));
171	av_store (newpadlist, 1, (SV *) newpad);	252	av_store (newpadlist, 1, (SV *)newpad);
172
173	av = newAV (); /* will be @_ */
174	av_extend (av, 0);
175	av_store (newpad, 0, (SV *) av);
176	AvREIFY_on (av);
177
178	for (ix = fpad; ix > 0; ix--)
179	{
180	SV *namesv = (ix <= fname) ? pname[ix] : Nullsv;
181
182	if (namesv && namesv != &PL_sv_undef)
183	{
184	char name = SvPVX (namesv); / XXX */
185
186	if (SvFLAGS (namesv) & SVf_FAKE \|\| *name == '&')
187	{ /* lexical from outside? */
188	npad[ix] = SvREFCNT_inc (ppad[ix]);
189	}
190	else
191	{ /* our own lexical */
192	SV *sv;
193	if (*name == '&')
194	sv = SvREFCNT_inc (ppad[ix]);
195	else if (*name == '@')
196	sv = (SV *) newAV ();
197	else if (*name == '%')
198	sv = (SV *) newHV ();
199	else
200	sv = NEWSV (0, 0);
201
202	#ifdef SvPADBUSY
203	if (!SvPADBUSY (sv))
204	#endif
205	SvPADMY_on (sv);
206
207	npad[ix] = sv;
208	}
209	}
210	else if (IS_PADGV (ppad[ix]) \|\| IS_PADCONST (ppad[ix]))
211	{
212	npad[ix] = SvREFCNT_inc (ppad[ix]);
213	}
214	else
215	{
216	SV *sv = NEWSV (0, 0);
217	SvPADTMP_on (sv);
218	npad[ix] = sv;
219	}
220	}
221
222	#if 0 /* return -ENOTUNDERSTOOD */
223	/* Now that vars are all in place, clone nested closures. */
224
225	for (ix = fpad; ix > 0; ix--) {
226	SV* namesv = (ix <= fname) ? pname[ix] : Nullsv;
227	if (namesv
228	&& namesv != &PL_sv_undef
229	&& !(SvFLAGS(namesv) & SVf_FAKE)
230	&& *SvPVX(namesv) == '&'
231	&& CvCLONE(ppad[ix]))
232	{
233	CV kid = cv_clone((CV)ppad[ix]);
234	SvREFCNT_dec(ppad[ix]);
235	CvCLONE_on(kid);
236	SvPADMY_on(kid);
237	npad[ix] = (SV*)kid;
238	}
239	}
240	#endif
241		253
242	return newpadlist;	254	return newpadlist;
243	}	255	}
244		256
245	STATIC void	257	static void
246	free_padlist (pTHX_ AV *padlist)	258	free_padlist (pTHX_ AV *padlist)
247	{	259	{
248	/* may be during global destruction */	260	/* may be during global destruction */
249	if (SvREFCNT (padlist))	261	if (SvREFCNT (padlist))
250	{	262	{
…		…
264		276
265	SvREFCNT_dec ((SV*)padlist);	277	SvREFCNT_dec ((SV*)padlist);
266	}	278	}
267	}	279	}
268		280
269	STATIC int	281	static int
270	coro_cv_free (pTHX_ SV sv, MAGIC mg)	282	coro_cv_free (pTHX_ SV sv, MAGIC mg)
271	{	283	{
272	AV *padlist;	284	AV *padlist;
273	AV av = (AV )mg->mg_obj;	285	AV av = (AV )mg->mg_obj;
274		286
275	/* casting is fun. */	287	/* casting is fun. */
276	while (&PL_sv_undef != (SV )(padlist = (AV )av_pop (av)))	288	while (&PL_sv_undef != (SV )(padlist = (AV )av_pop (av)))
277	free_padlist (aTHX_ padlist);	289	free_padlist (aTHX_ padlist);
278		290
279	SvREFCNT_dec (av);	291	SvREFCNT_dec (av);
		292
		293	return 0;
280	}	294	}
281		295
282	#define PERL_MAGIC_coro PERL_MAGIC_ext	296	#define PERL_MAGIC_coro PERL_MAGIC_ext
283		297
284	static MGVTBL vtbl_coro = {0, 0, 0, 0, coro_cv_free};	298	static MGVTBL vtbl_coro = {0, 0, 0, 0, coro_cv_free};
285		299
		300	#define CORO_MAGIC(cv) \
		301	SvMAGIC (cv) \
		302	? SvMAGIC (cv)->mg_type == PERL_MAGIC_coro \
		303	? SvMAGIC (cv) \
		304	: mg_find ((SV *)cv, PERL_MAGIC_coro) \
		305	: 0
		306
		307	static struct coro *
		308	SvSTATE_ (pTHX_ SV *coro)
		309	{
		310	HV *stash;
		311	MAGIC *mg;
		312
		313	if (SvROK (coro))
		314	coro = SvRV (coro);
		315
		316	if (SvTYPE (coro) != SVt_PVHV)
		317	croak ("Coro::State object required");
		318
		319	stash = SvSTASH (coro);
		320	if (stash != coro_stash && stash != coro_state_stash)
		321	{
		322	/* very slow, but rare, check */
		323	if (!sv_derived_from (sv_2mortal (newRV_inc (coro)), "Coro::State"))
		324	croak ("Coro::State object required");
		325	}
		326
		327	mg = CORO_MAGIC (coro);
		328	return (struct coro *)mg->mg_ptr;
		329	}
		330
		331	#define SvSTATE(sv) SvSTATE_ (aTHX_ (sv))
		332
286	/* the next two functions merely cache the padlists */	333	/* the next two functions merely cache the padlists */
287	STATIC void	334	static void
288	get_padlist (pTHX_ CV *cv)	335	get_padlist (pTHX_ CV *cv)
289	{	336	{
290	MAGIC mg = mg_find ((SV )cv, PERL_MAGIC_coro);	337	MAGIC *mg = CORO_MAGIC (cv);
		338	AV *av;
291		339
292	if (mg && AvFILLp ((AV *)mg->mg_obj) >= 0)	340	if (mg && AvFILLp ((av = (AV *)mg->mg_obj)) >= 0)
293	CvPADLIST (cv) = (AV )av_pop ((AV )mg->mg_obj);	341	CvPADLIST (cv) = (AV *)AvARRAY (av)[AvFILLp (av)--];
294	else	342	else
		343	{
		344	#if CORO_PREFER_PERL_FUNCTIONS
		345	/* this is probably cleaner, but also slower? */
		346	CV *cp = Perl_cv_clone (cv);
		347	CvPADLIST (cv) = CvPADLIST (cp);
		348	CvPADLIST (cp) = 0;
		349	SvREFCNT_dec (cp);
		350	#else
295	CvPADLIST (cv) = clone_padlist (aTHX_ CvPADLIST (cv));	351	CvPADLIST (cv) = coro_clone_padlist (aTHX_ cv);
		352	#endif
		353	}
296	}	354	}
297		355
298	STATIC void	356	static void
299	put_padlist (pTHX_ CV *cv)	357	put_padlist (pTHX_ CV *cv)
300	{	358	{
301	MAGIC mg = mg_find ((SV )cv, PERL_MAGIC_coro);	359	MAGIC *mg = CORO_MAGIC (cv);
		360	AV *av;
302		361
303	if (!mg)	362	if (!mg)
304	{	363	{
305	sv_magic ((SV *)cv, 0, PERL_MAGIC_coro, 0, 0);	364	sv_magic ((SV *)cv, 0, PERL_MAGIC_coro, 0, 0);
306	mg = mg_find ((SV *)cv, PERL_MAGIC_coro);	365	mg = mg_find ((SV *)cv, PERL_MAGIC_coro);
307	mg->mg_virtual = &vtbl_coro;	366	mg->mg_virtual = &vtbl_coro;
308	mg->mg_obj = (SV *)newAV ();	367	mg->mg_obj = (SV *)newAV ();
309	}	368	}
310		369
311	av_push ((AV )mg->mg_obj, (SV )CvPADLIST (cv));	370	av = (AV *)mg->mg_obj;
		371
		372	if (AvFILLp (av) >= AvMAX (av))
		373	av_extend (av, AvMAX (av) + 1);
		374
		375	AvARRAY (av)[++AvFILLp (av)] = (SV *)CvPADLIST (cv);
312	}	376	}
		377
		378	/ load & save, init *****************************************************/
313		379
314	#define SB do {	380	#define SB do {
315	#define SE } while (0)	381	#define SE } while (0)
316		382
317	#define LOAD(state) load_state(aTHX_ (state));
318	#define SAVE(state,flags) save_state(aTHX_ (state),(flags));
319
320	#define REPLACE_SV(sv,val) SB SvREFCNT_dec(sv); (sv) = (val); (val) = 0; SE	383	#define REPLACE_SV(sv,val) SB SvREFCNT_dec (sv); (sv) = (val); (val) = 0; SE
321		384
322	static void	385	static void
323	load_state(pTHX_ Coro__State c)	386	load_perl (pTHX_ Coro__State c)
324	{	387	{
325	PL_dowarn = c->dowarn;	388	#define VAR(name,type) PL_ ## name = c->name;
326	PL_in_eval = c->in_eval;	389	# include "state.h"
327		390	#undef VAR
328	PL_curstackinfo = c->curstackinfo;
329	PL_curstack = c->curstack;
330	PL_mainstack = c->mainstack;
331	PL_stack_sp = c->stack_sp;
332	PL_op = c->op;
333	PL_curpad = c->curpad;
334	PL_comppad = c->comppad;
335	PL_compcv = c->compcv;
336	PL_stack_base = c->stack_base;
337	PL_stack_max = c->stack_max;
338	PL_tmps_stack = c->tmps_stack;
339	PL_tmps_floor = c->tmps_floor;
340	PL_tmps_ix = c->tmps_ix;
341	PL_tmps_max = c->tmps_max;
342	PL_markstack = c->markstack;
343	PL_markstack_ptr = c->markstack_ptr;
344	PL_markstack_max = c->markstack_max;
345	PL_scopestack = c->scopestack;
346	PL_scopestack_ix = c->scopestack_ix;
347	PL_scopestack_max = c->scopestack_max;
348	PL_savestack = c->savestack;
349	PL_savestack_ix = c->savestack_ix;
350	PL_savestack_max = c->savestack_max;
351	#if PERL_VERSION < 9
352	PL_retstack = c->retstack;
353	PL_retstack_ix = c->retstack_ix;
354	PL_retstack_max = c->retstack_max;
355	#endif
356	PL_curpm = c->curpm;
357	PL_curcop = c->curcop;
358	PL_top_env = c->top_env;
359		391
360	if (c->defav) REPLACE_SV (GvAV (PL_defgv), c->defav);	392	if (c->defav) REPLACE_SV (GvAV (PL_defgv), c->defav);
361	if (c->defsv) REPLACE_SV (DEFSV , c->defsv);	393	if (c->defsv) REPLACE_SV (DEFSV , c->defsv);
362	if (c->errsv) REPLACE_SV (ERRSV , c->errsv);	394	if (c->errsv) REPLACE_SV (ERRSV , c->errsv);
		395	if (c->deffh) REPLACE_SV (PL_defoutgv , c->deffh);
		396
		397	if (c->irssv)
		398	{
		399	if (c->irssv == PL_rs \|\| sv_eq (PL_rs, c->irssv))
		400	{
		401	SvREFCNT_dec (c->irssv);
		402	c->irssv = 0;
		403	}
		404	else
		405	{
		406	REPLACE_SV (PL_rs, c->irssv);
		407	if (!c->irssv_sv) c->irssv_sv = get_sv ("/", 0);
		408	sv_setsv (c->irssv_sv, PL_rs);
		409	}
		410	}
363		411
364	{	412	{
365	dSP;	413	dSP;
366	CV *cv;	414	CV *cv;
367		415
368	/* now do the ugly restore mess */	416	/* now do the ugly restore mess */
369	while ((cv = (CV *)POPs))	417	while ((cv = (CV *)POPs))
370	{	418	{
371	AV padlist = (AV )POPs;
372
373	if (padlist)
374	{
375	put_padlist (aTHX_ cv); /* mark this padlist as available */	419	put_padlist (aTHX_ cv); /* mark this padlist as available */
376	CvPADLIST(cv) = padlist;	420	CvDEPTH (cv) = PTR2IV (POPs);
377	}	421	CvPADLIST (cv) = (AV *)POPs;
378
379	++CvDEPTH(cv);
380	}	422	}
381		423
382	PUTBACK;	424	PUTBACK;
383	}	425	}
384	}	426	}
385		427
386	static void	428	static void
387	save_state(pTHX_ Coro__State c, int flags)	429	save_perl (pTHX_ Coro__State c)
388	{	430	{
389	{	431	{
390	dSP;	432	dSP;
391	I32 cxix = cxstack_ix;	433	I32 cxix = cxstack_ix;
392	PERL_CONTEXT *ccstk = cxstack;	434	PERL_CONTEXT *ccstk = cxstack;
…		…
395	/*	437	/*
396	* the worst thing you can imagine happens first - we have to save	438	* the worst thing you can imagine happens first - we have to save
397	* (and reinitialize) all cv's in the whole callchain :(	439	* (and reinitialize) all cv's in the whole callchain :(
398	*/	440	*/
399		441
400	PUSHs (Nullsv);	442	XPUSHs (Nullsv);
401	/* this loop was inspired by pp_caller */	443	/* this loop was inspired by pp_caller */
402	for (;;)	444	for (;;)
403	{	445	{
404	while (cxix >= 0)	446	while (cxix >= 0)
405	{	447	{
406	PERL_CONTEXT *cx = &ccstk[cxix--];	448	PERL_CONTEXT *cx = &ccstk[cxix--];
407		449
408	if (CxTYPE(cx) == CXt_SUB)	450	if (CxTYPE (cx) == CXt_SUB \|\| CxTYPE (cx) == CXt_FORMAT)
409	{	451	{
410	CV *cv = cx->blk_sub.cv;	452	CV *cv = cx->blk_sub.cv;
		453
411	if (CvDEPTH(cv))	454	if (CvDEPTH (cv))
412	{	455	{
413	EXTEND (SP, CvDEPTH(cv)*2);	456	EXTEND (SP, 3);
414
415	while (--CvDEPTH(cv))
416	{
417	/* this tells the restore code to increment CvDEPTH */
418	PUSHs (Nullsv);
419	PUSHs ((SV *)cv);
420	}
421
422	PUSHs ((SV *)CvPADLIST(cv));	457	PUSHs ((SV *)CvPADLIST (cv));
		458	PUSHs (INT2PTR (SV *, CvDEPTH (cv)));
423	PUSHs ((SV *)cv);	459	PUSHs ((SV *)cv);
424		460
		461	CvDEPTH (cv) = 0;
425	get_padlist (aTHX_ cv); /* this is a monster */	462	get_padlist (aTHX_ cv);
426	}	463	}
427	}	464	}
428	#ifdef CXt_FORMAT
429	else if (CxTYPE(cx) == CXt_FORMAT)
430	{
431	/* I never used formats, so how should I know how these are implemented? */
432	/* my bold guess is as a simple, plain sub... */
433	croak ("CXt_FORMAT not yet handled. Don't switch coroutines from within formats");
434	}
435	#endif
436	}	465	}
437		466
438	if (top_si->si_type == PERLSI_MAIN)	467	if (top_si->si_type == PERLSI_MAIN)
439	break;	468	break;
440		469
441	top_si = top_si->si_prev;	470	top_si = top_si->si_prev;
442	ccstk = top_si->si_cxstack;	471	ccstk = top_si->si_cxstack;
443	cxix = top_si->si_cxix;	472	cxix = top_si->si_cxix;
444	}	473	}
445		474
446	PUTBACK;	475	PUTBACK;
447	}	476	}
448		477
449	c->defav = flags & TRANSFER_SAVE_DEFAV ? (AV *)SvREFCNT_inc (GvAV (PL_defgv)) : 0;	478	c->defav = c->save & CORO_SAVE_DEFAV ? (AV *)SvREFCNT_inc (GvAV (PL_defgv)) : 0;
450	c->defsv = flags & TRANSFER_SAVE_DEFSV ? SvREFCNT_inc (DEFSV) : 0;	479	c->defsv = c->save & CORO_SAVE_DEFSV ? SvREFCNT_inc (DEFSV) : 0;
451	c->errsv = flags & TRANSFER_SAVE_ERRSV ? SvREFCNT_inc (ERRSV) : 0;	480	c->errsv = c->save & CORO_SAVE_ERRSV ? SvREFCNT_inc (ERRSV) : 0;
		481	c->deffh = c->save & CORO_SAVE_DEFFH ? (GV *)SvREFCNT_inc (PL_defoutgv) : 0;
		482	c->irssv = c->save & CORO_SAVE_IRSSV ? SvREFCNT_inc (PL_rs) : 0;
452		483
453	c->dowarn = PL_dowarn;	484	#define VAR(name,type)c->name = PL_ ## name;
454	c->in_eval = PL_in_eval;	485	# include "state.h"
455		486	#undef VAR
456	c->curstackinfo = PL_curstackinfo;
457	c->curstack = PL_curstack;
458	c->mainstack = PL_mainstack;
459	c->stack_sp = PL_stack_sp;
460	c->op = PL_op;
461	c->curpad = PL_curpad;
462	c->comppad = PL_comppad;
463	c->compcv = PL_compcv;
464	c->stack_base = PL_stack_base;
465	c->stack_max = PL_stack_max;
466	c->tmps_stack = PL_tmps_stack;
467	c->tmps_floor = PL_tmps_floor;
468	c->tmps_ix = PL_tmps_ix;
469	c->tmps_max = PL_tmps_max;
470	c->markstack = PL_markstack;
471	c->markstack_ptr = PL_markstack_ptr;
472	c->markstack_max = PL_markstack_max;
473	c->scopestack = PL_scopestack;
474	c->scopestack_ix = PL_scopestack_ix;
475	c->scopestack_max = PL_scopestack_max;
476	c->savestack = PL_savestack;
477	c->savestack_ix = PL_savestack_ix;
478	c->savestack_max = PL_savestack_max;
479	#if PERL_VERSION < 9
480	c->retstack = PL_retstack;
481	c->retstack_ix = PL_retstack_ix;
482	c->retstack_max = PL_retstack_max;
483	#endif
484	c->curpm = PL_curpm;
485	c->curcop = PL_curcop;
486	c->top_env = PL_top_env;
487	}	487	}
488		488
489	/*	489	/*
490	* allocate various perl stacks. This is an exact copy	490	* allocate various perl stacks. This is an exact copy
491	* of perl.c:init_stacks, except that it uses less memory	491	* of perl.c:init_stacks, except that it uses less memory
492	* on the (sometimes correct) assumption that coroutines do	492	* on the (sometimes correct) assumption that coroutines do
493	* not usually need a lot of stackspace.	493	* not usually need a lot of stackspace.
494	*/	494	*/
495	STATIC void	495	#if CORO_PREFER_PERL_FUNCTIONS
		496	# define coro_init_stacks init_stacks
		497	#else
		498	static void
496	coro_init_stacks (pTHX)	499	coro_init_stacks (pTHX)
497	{	500	{
498	LOCK;	501	PL_curstackinfo = new_stackinfo(64, 6);
499
500	PL_curstackinfo = new_stackinfo(96, 1024/sizeof(PERL_CONTEXT) - 1);
501	PL_curstackinfo->si_type = PERLSI_MAIN;	502	PL_curstackinfo->si_type = PERLSI_MAIN;
502	PL_curstack = PL_curstackinfo->si_stack;	503	PL_curstack = PL_curstackinfo->si_stack;
503	PL_mainstack = PL_curstack; /* remember in case we switch stacks */	504	PL_mainstack = PL_curstack; /* remember in case we switch stacks */
504		505
505	PL_stack_base = AvARRAY(PL_curstack);	506	PL_stack_base = AvARRAY(PL_curstack);
506	PL_stack_sp = PL_stack_base;	507	PL_stack_sp = PL_stack_base;
507	PL_stack_max = PL_stack_base + AvMAX(PL_curstack);	508	PL_stack_max = PL_stack_base + AvMAX(PL_curstack);
508		509
509	New(50,PL_tmps_stack,96,SV*);	510	New(50,PL_tmps_stack,64,SV*);
510	PL_tmps_floor = -1;	511	PL_tmps_floor = -1;
511	PL_tmps_ix = -1;	512	PL_tmps_ix = -1;
512	PL_tmps_max = 96;	513	PL_tmps_max = 64;
513		514
514	New(54,PL_markstack,16,I32);	515	New(54,PL_markstack,16,I32);
515	PL_markstack_ptr = PL_markstack;	516	PL_markstack_ptr = PL_markstack;
516	PL_markstack_max = PL_markstack + 16;	517	PL_markstack_max = PL_markstack + 16;
517		518
…		…
521		522
522	New(54,PL_scopestack,16,I32);	523	New(54,PL_scopestack,16,I32);
523	PL_scopestack_ix = 0;	524	PL_scopestack_ix = 0;
524	PL_scopestack_max = 16;	525	PL_scopestack_max = 16;
525		526
526	New(54,PL_savestack,96,ANY);	527	New(54,PL_savestack,64,ANY);
527	PL_savestack_ix = 0;	528	PL_savestack_ix = 0;
528	PL_savestack_max = 96;	529	PL_savestack_max = 64;
529		530
530	#if PERL_VERSION < 9	531	#if !PERL_VERSION_ATLEAST (5,9,0)
531	New(54,PL_retstack,8,OP*);	532	New(54,PL_retstack,4,OP*);
532	PL_retstack_ix = 0;	533	PL_retstack_ix = 0;
533	PL_retstack_max = 8;	534	PL_retstack_max = 4;
534	#endif	535	#endif
535
536	UNLOCK;
537	}	536	}
		537	#endif
538		538
539	/*	539	/*
540	* destroy the stacks, the callchain etc...	540	* destroy the stacks, the callchain etc...
541	*/	541	*/
542	STATIC void	542	static void
543	destroy_stacks(pTHX)	543	coro_destroy_stacks (pTHX)
544	{	544	{
545	if (!IN_DESTRUCT)	545	if (!IN_DESTRUCT)
546	{	546	{
547	/* is this ugly, I ask? */	547	/* restore all saved variables and stuff */
548	LEAVE_SCOPE (0);	548	LEAVE_SCOPE (0);
		549	assert (PL_tmps_floor == -1);
549		550
550	/* sure it is, but more important: is it correct?? :/ */	551	/* free all temporaries */
551	FREETMPS;	552	FREETMPS;
		553	assert (PL_tmps_ix == -1);
552		554
		555	/* unwind all extra stacks */
553	/POPSTACK_TO (PL_mainstack);//D//use/	556	POPSTACK_TO (PL_mainstack);
		557
		558	/* unwind main stack */
		559	dounwind (-1);
554	}	560	}
555		561
556	while (PL_curstackinfo->si_next)	562	while (PL_curstackinfo->si_next)
557	PL_curstackinfo = PL_curstackinfo->si_next;	563	PL_curstackinfo = PL_curstackinfo->si_next;
558		564
559	while (PL_curstackinfo)	565	while (PL_curstackinfo)
560	{	566	{
561	PERL_SI *p = PL_curstackinfo->si_prev;	567	PERL_SI *p = PL_curstackinfo->si_prev;
562		568
563	{ /D//remove/
564	dSP;
565	SWITCHSTACK (PL_curstack, PL_curstackinfo->si_stack);
566	PUTBACK; /* possibly superfluous */
567	}
568
569	if (!IN_DESTRUCT)	569	if (!IN_DESTRUCT)
570	{
571	dounwind (-1);/D//remove/
572	SvREFCNT_dec (PL_curstackinfo->si_stack);	570	SvREFCNT_dec (PL_curstackinfo->si_stack);
573	}
574		571
575	Safefree (PL_curstackinfo->si_cxstack);	572	Safefree (PL_curstackinfo->si_cxstack);
576	Safefree (PL_curstackinfo);	573	Safefree (PL_curstackinfo);
577	PL_curstackinfo = p;	574	PL_curstackinfo = p;
578	}	575	}
579		576
580	Safefree (PL_tmps_stack);	577	Safefree (PL_tmps_stack);
581	Safefree (PL_markstack);	578	Safefree (PL_markstack);
582	Safefree (PL_scopestack);	579	Safefree (PL_scopestack);
583	Safefree (PL_savestack);	580	Safefree (PL_savestack);
584	#if PERL_VERSION < 9	581	#if !PERL_VERSION_ATLEAST (5,9,0)
585	Safefree (PL_retstack);	582	Safefree (PL_retstack);
586	#endif	583	#endif
587	}	584	}
588		585
		586	static size_t
		587	coro_rss (pTHX_ struct coro *coro)
		588	{
		589	size_t rss = sizeof (coro);
		590
		591	if (coro->mainstack)
		592	{
		593	if (coro->flags & CF_RUNNING)
		594	{
		595	#define VAR(name,type)coro->name = PL_ ## name;
		596	# include "state.h"
		597	#undef VAR
		598	}
		599
		600	rss += sizeof (coro->curstackinfo);
		601	rss += sizeof (struct xpvav) + (1 + AvFILL (coro->curstackinfo->si_stack)) * sizeof (SV *);
		602	rss += (coro->curstackinfo->si_cxmax + 1) * sizeof (PERL_CONTEXT);
		603	rss += sizeof (struct xpvav) + (1 + AvFILL (coro->curstack)) * sizeof (SV *);
		604	rss += coro->tmps_max * sizeof (SV *);
		605	rss += (coro->markstack_max - coro->markstack_ptr) * sizeof (I32);
		606	rss += coro->scopestack_max * sizeof (I32);
		607	rss += coro->savestack_max * sizeof (ANY);
		608
		609	#if !PERL_VERSION_ATLEAST (5,9,0)
		610	rss += coro->retstack_max * sizeof (OP *);
		611	#endif
		612	}
		613
		614	return rss;
		615	}
		616
		617	/ coroutine stack handling **********************************************/
		618
589	static void	619	static void
590	allocate_stack (Coro__State ctx, int alloc)	620	setup_coro (pTHX_ struct coro *coro)
591	{
592	coro_stack *stack;
593
594	New (0, stack, 1, coro_stack);
595
596	stack->refcnt = 1;
597	stack->usecnt = 1;
598	stack->gencnt = ctx->gencnt = 0;
599
600	if (alloc)
601	{
602	#if HAVE_MMAP
603	stack->ssize = STACKSIZE * sizeof (long); /* mmap should do allocate-on-write for us */
604	stack->sptr = mmap (0, stack->ssize, PROT_EXEC\|PROT_READ\|PROT_WRITE, MAP_PRIVATE\|MAP_ANONYMOUS, 0, 0);
605	if (stack->sptr == (void *)-1)
606	#endif
607	{
608	/FIXME//D//* reasonable stack size! */
609	stack->ssize = - (STACKSIZE * sizeof (long));
610	New (0, stack->sptr, STACKSIZE, long);
611	}
612	}
613	else
614	stack->sptr = 0;
615
616	ctx->stack = stack;
617	}
618
619	static void
620	deallocate_stack (Coro__State ctx)
621	{
622	coro_stack *stack = ctx->stack;
623
624	ctx->stack = 0;
625
626	if (stack)
627	{
628	if (!--stack->refcnt)
629	{
630	#ifdef HAVE_MMAP
631	if (stack->ssize > 0 && stack->sptr)
632	munmap (stack->sptr, stack->ssize);
633	else
634	#endif
635	Safefree (stack->sptr);
636
637	Safefree (stack);
638	}
639	else if (ctx->gencnt == stack->gencnt)
640	--stack->usecnt;
641	}
642	}
643
644	static void
645	setup_coro (void *arg)
646	{	621	{
647	/*	622	/*
648	* emulate part of the perl startup here.	623	* emulate part of the perl startup here.
649	*/	624	*/
		625	coro_init_stacks (aTHX);
		626
		627	PL_runops = RUNOPS_DEFAULT;
		628	PL_curcop = &PL_compiling;
		629	PL_in_eval = EVAL_NULL;
		630	PL_comppad = 0;
		631	PL_curpm = 0;
		632	PL_localizing = 0;
		633	PL_dirty = 0;
		634	PL_restartop = 0;
		635
		636	{
		637	dSP;
		638	LOGOP myop;
		639
		640	SvREFCNT_dec (GvAV (PL_defgv));
		641	GvAV (PL_defgv) = coro->args; coro->args = 0;
		642
		643	Zero (&myop, 1, LOGOP);
		644	myop.op_next = Nullop;
		645	myop.op_flags = OPf_WANT_VOID;
		646
		647	PUSHMARK (SP);
		648	XPUSHs (av_shift (GvAV (PL_defgv)));
		649	PUTBACK;
		650	PL_op = (OP *)&myop;
		651	PL_op = PL_ppaddr[OP_ENTERSUB](aTHX);
		652	SPAGAIN;
		653	}
		654
		655	ENTER; /* necessary e.g. for dounwind */
		656	}
		657
		658	static void
		659	free_coro_mortal (pTHX)
		660	{
		661	if (coro_mortal)
		662	{
		663	SvREFCNT_dec (coro_mortal);
		664	coro_mortal = 0;
		665	}
		666	}
		667
		668	static int
		669	runops_trace (pTHX)
		670	{
		671	COP *oldcop = 0;
		672	int oldcxix = -2;
		673	struct coro coro = SvSTATE (coro_current); / trace cctx is tied to specific coro */
		674	coro_cctx *cctx = coro->cctx;
		675
		676	while ((PL_op = CALL_FPTR (PL_op->op_ppaddr) (aTHX)))
		677	{
		678	PERL_ASYNC_CHECK ();
		679
		680	if (PL_op->op_type == OP_LEAVESUB && cctx->flags & CC_TRACE_SUB)
		681	{
		682	PERL_CONTEXT *cx = &cxstack[cxstack_ix];
		683	SV bot, top;
		684	AV av = newAV (); / return values */
		685	SV **cb;
		686	runops_proc_t old_runops = PL_runops;
		687	dSP;
		688	ENTER;
		689	SAVETMPS;
		690	EXTEND (SP, 3);
		691	PL_runops = RUNOPS_DEFAULT;
		692
		693	GV *gv = CvGV (cx->blk_sub.cv);
		694	SV *fullname = sv_2mortal (newSV (0));
		695	if (isGV (gv))
		696	gv_efullname3 (fullname, gv, 0);
		697
		698	bot = PL_stack_base + cx->blk_oldsp + 1;
		699	top = cx->blk_gimme == G_ARRAY ? SP + 1
		700	: cx->blk_gimme == G_SCALAR ? bot + 1
		701	: bot;
		702
		703	while (bot < top)
		704	av_push (av, SvREFCNT_inc (*bot++));
		705
		706	PUSHMARK (SP);
		707	PUSHs (&PL_sv_no);
		708	PUSHs (fullname);
		709	PUSHs (sv_2mortal (newRV_noinc ((SV *)av)));
		710	PUTBACK;
		711	cb = hv_fetch ((HV *)SvRV (coro_current), "_trace_sub_cb", sizeof ("_trace_sub_cb") - 1, 0);
		712	if (cb) call_sv (*cb, G_KEEPERR \| G_EVAL \| G_VOID \| G_DISCARD);
		713	SPAGAIN;
		714
		715	FREETMPS;
		716	LEAVE;
		717	PL_runops = old_runops;
		718	}
		719
		720	if (oldcop != PL_curcop)
		721	{
		722	oldcop = PL_curcop;
		723
		724	if (PL_curcop != &PL_compiling)
		725	{
		726	SV **cb;
		727	runops_proc_t old_runops = PL_runops;
		728	dSP;
		729	ENTER;
		730	SAVETMPS;
		731	EXTEND (SP, 3);
		732	PL_runops = RUNOPS_DEFAULT;
		733
		734	if (oldcxix != cxstack_ix && cctx->flags & CC_TRACE_SUB)
		735	{
		736	PERL_CONTEXT *cx = &cxstack[cxstack_ix];
		737
		738	if (CxTYPE (cx) == CXt_SUB && oldcxix < cxstack_ix)
		739	{
		740	GV *gv = CvGV (cx->blk_sub.cv);
		741	SV *fullname = sv_2mortal (newSV (0));
		742	if (isGV (gv))
		743	gv_efullname3 (fullname, gv, 0);
		744
		745	PUSHMARK (SP);
		746	PUSHs (&PL_sv_yes);
		747	PUSHs (fullname);
		748	PUSHs (cx->blk_sub.hasargs ? sv_2mortal (newRV_inc ((SV *)cx->blk_sub.argarray)) : &PL_sv_undef);
		749	PUTBACK;
		750	cb = hv_fetch ((HV *)SvRV (coro_current), "_trace_sub_cb", sizeof ("_trace_sub_cb") - 1, 0);
		751	if (cb) call_sv (*cb, G_KEEPERR \| G_EVAL \| G_VOID \| G_DISCARD);
		752	SPAGAIN;
		753	}
		754
		755	oldcxix = cxstack_ix;
		756	}
		757
		758	if (cctx->flags & CC_TRACE_LINE)
		759	{
		760	PUSHMARK (SP);
		761	PUSHs (sv_2mortal (newSVpv (OutCopFILE (oldcop), 0)));
		762	PUSHs (sv_2mortal (newSViv (CopLINE (oldcop))));
		763	PUTBACK;
		764	cb = hv_fetch ((HV *)SvRV (coro_current), "_trace_line_cb", sizeof ("_trace_line_cb") - 1, 0);
		765	if (cb) call_sv (*cb, G_KEEPERR \| G_EVAL \| G_VOID \| G_DISCARD);
		766	SPAGAIN;
		767	}
		768
		769	FREETMPS;
		770	LEAVE;
		771	PL_runops = old_runops;
		772	}
		773	}
		774	}
		775
		776	TAINT_NOT;
		777	return 0;
		778	}
		779
		780	/* inject a fake call to Coro::State::_cctx_init into the execution */
		781	/* _cctx_init should be careful, as it could be called at almost any time */
		782	/* during execution of a perl program */
		783	static void NOINLINE
		784	prepare_cctx (pTHX_ coro_cctx *cctx)
		785	{
		786	dSP;
		787	LOGOP myop;
		788
		789	PL_top_env = &PL_start_env;
		790
		791	if (cctx->flags & CC_TRACE)
		792	PL_runops = runops_trace;
		793
		794	Zero (&myop, 1, LOGOP);
		795	myop.op_next = PL_op;
		796	myop.op_flags = OPf_WANT_VOID \| OPf_STACKED;
		797
		798	PUSHMARK (SP);
		799	EXTEND (SP, 2);
		800	PUSHs (sv_2mortal (newSViv (PTR2IV (cctx))));
		801	PUSHs ((SV *)get_cv ("Coro::State::_cctx_init", FALSE));
		802	PUTBACK;
		803	PL_op = (OP *)&myop;
		804	PL_op = PL_ppaddr[OP_ENTERSUB](aTHX);
		805	SPAGAIN;
		806	}
		807
		808	/*
		809	* this is a _very_ stripped down perl interpreter ;)
		810	*/
		811	static void
		812	coro_run (void *arg)
		813	{
650	dTHX;	814	dTHX;
651	dSP;
652	Coro__State ctx = (Coro__State)arg;
653	SV sub_init = (SV )get_cv (SUB_INIT, FALSE);
654		815
655	coro_init_stacks (aTHX);	816	/* coro_run is the alternative tail of transfer(), so unlock here. */
656	/PL_curcop = 0;/	817	UNLOCK;
657	/PL_in_eval = PL_in_eval;/ /* inherit */
658	SvREFCNT_dec (GvAV (PL_defgv));
659	GvAV (PL_defgv) = ctx->args; ctx->args = 0;
660		818
661	SPAGAIN;	819	/* we now skip the entersub that lead to transfer() */
		820	PL_op = PL_op->op_next;
662		821
663	if (ctx->stack)	822	/* inject a fake subroutine call to cctx_init */
664	{	823	prepare_cctx (aTHX_ (coro_cctx *)arg);
665	ctx->cursp = 0;
666		824
667	PUSHMARK(SP);	825	/* somebody or something will hit me for both perl_run and PL_restartop */
668	PUTBACK;	826	PL_restartop = PL_op;
669	(void) call_sv (sub_init, G_VOID\|G_NOARGS\|G_EVAL);	827	perl_run (PL_curinterp);
670		828
671	if (SvTRUE (ERRSV))	829	/*
672	croak (NULL);	830	* If perl-run returns we assume exit() was being called or the coro
673	else	831	* fell off the end, which seems to be the only valid (non-bug)
674	croak ("FATAL: CCTXT coroutine returned!");	832	* reason for perl_run to return. We try to exit by jumping to the
		833	* bootstrap-time "top" top_env, as we cannot restore the "main"
		834	* coroutine as Coro has no such concept
		835	*/
		836	PL_top_env = main_top_env;
		837	JMPENV_JUMP (2); /* I do not feel well about the hardcoded 2 at all */
		838	}
		839
		840	static coro_cctx *
		841	cctx_new ()
		842	{
		843	coro_cctx *cctx;
		844	void *stack_start;
		845	size_t stack_size;
		846
		847	++cctx_count;
		848
		849	Newz (0, cctx, 1, coro_cctx);
		850
		851	#if HAVE_MMAP
		852
		853	cctx->ssize = ((coro_stacksize * sizeof (long) + PAGESIZE - 1) / PAGESIZE + CORO_STACKGUARD) * PAGESIZE;
		854	/* mmap supposedly does allocate-on-write for us */
		855	cctx->sptr = mmap (0, cctx->ssize, PROT_EXEC\|PROT_READ\|PROT_WRITE, MAP_PRIVATE\|MAP_ANONYMOUS, 0, 0);
		856
		857	if (cctx->sptr != (void *)-1)
		858	{
		859	# if CORO_STACKGUARD
		860	mprotect (cctx->sptr, CORO_STACKGUARD * PAGESIZE, PROT_NONE);
		861	# endif
		862	stack_start = CORO_STACKGUARD * PAGESIZE + (char *)cctx->sptr;
		863	stack_size = cctx->ssize - CORO_STACKGUARD * PAGESIZE;
		864	cctx->flags \|= CC_MAPPED;
675	}	865	}
676	else	866	else
677	{	867	#endif
678	UNOP myop;
679
680	PL_op = (OP *)&myop;
681
682	Zero(&myop, 1, UNOP);
683	myop.op_next = Nullop;
684	myop.op_flags = OPf_WANT_VOID;
685
686	PUSHMARK(SP);
687	XPUSHs (sub_init);
688	/*
689	* the next line is slightly wrong, as PL_op->op_next
690	* is actually being executed so we skip the first op.
691	* that doesn't matter, though, since it is only
692	* pp_nextstate and we never return...
693	* ah yes, and I don't care anyways ;)
694	*/
695	PUTBACK;
696	PL_op = PL_ppaddr[OP_ENTERSUB](aTHX);
697	SPAGAIN;
698
699	ENTER; /* necessary e.g. for dounwind */
700	}	868	{
		869	cctx->ssize = coro_stacksize * (long)sizeof (long);
		870	New (0, cctx->sptr, coro_stacksize, long);
		871
		872	if (!cctx->sptr)
		873	{
		874	perror ("FATAL: unable to allocate stack for coroutine");
		875	_exit (EXIT_FAILURE);
		876	}
		877
		878	stack_start = cctx->sptr;
		879	stack_size = cctx->ssize;
		880	}
		881
		882	REGISTER_STACK (cctx, (char )stack_start, (char )stack_start + stack_size);
		883	coro_create (&cctx->cctx, coro_run, (void *)cctx, stack_start, stack_size);
		884
		885	return cctx;
701	}	886	}
702		887
703	static void	888	static void
704	continue_coro (void *arg)	889	cctx_destroy (coro_cctx *cctx)
705	{	890	{
706	/*	891	if (!cctx)
707	* this is a _very_ stripped down perl interpreter ;)	892	return;
708	*/
709	dTHX;
710	Coro__State ctx = (Coro__State)arg;
711	JMPENV coro_start_env;
712		893
713	PL_top_env = &ctx->start_env;	894	--cctx_count;
714		895
715	ctx->cursp = 0;	896	#if CORO_USE_VALGRIND
716	PL_op = PL_op->op_next;	897	VALGRIND_STACK_DEREGISTER (cctx->valgrind_id);
717	CALLRUNOPS(aTHX);	898	#endif
718		899
719	abort ();	900	#if HAVE_MMAP
720	}	901	if (cctx->flags & CC_MAPPED)
		902	munmap (cctx->sptr, cctx->ssize);
		903	else
		904	#endif
		905	Safefree (cctx->sptr);
721		906
722	STATIC void	907	Safefree (cctx);
		908	}
		909
		910	static coro_cctx *
		911	cctx_get (pTHX)
		912	{
		913	while (cctx_first)
		914	{
		915	coro_cctx *cctx = cctx_first;
		916	cctx_first = cctx->next;
		917	--cctx_idle;
		918
		919	if (cctx->ssize >= coro_stacksize && !(cctx->flags & CC_NOREUSE))
		920	return cctx;
		921
		922	cctx_destroy (cctx);
		923	}
		924
		925	return cctx_new ();
		926	}
		927
		928	static void
		929	cctx_put (coro_cctx *cctx)
		930	{
		931	/* free another cctx if overlimit */
		932	if (cctx_idle >= MAX_IDLE_CCTX)
		933	{
		934	coro_cctx *first = cctx_first;
		935	cctx_first = first->next;
		936	--cctx_idle;
		937
		938	cctx_destroy (first);
		939	}
		940
		941	++cctx_idle;
		942	cctx->next = cctx_first;
		943	cctx_first = cctx;
		944	}
		945
		946	/ coroutine switching ***************************************************/
		947
		948	static void NOINLINE
		949	transfer_check (pTHX_ struct coro prev, struct coro next)
		950	{
		951	if (prev != next)
		952	{
		953	if (!(prev->flags & (CF_RUNNING \| CF_NEW)))
		954	croak ("Coro::State::transfer called with non-running/new prev Coro::State, but can only transfer from running or new states");
		955
		956	if (next->flags & CF_RUNNING)
		957	croak ("Coro::State::transfer called with running next Coro::State, but can only transfer to inactive states");
		958
		959	if (next->flags & CF_DESTROYED)
		960	croak ("Coro::State::transfer called with destroyed next Coro::State, but can only transfer to inactive states");
		961
		962	if (PL_lex_state != LEX_NOTPARSING)
		963	croak ("Coro::State::transfer called while parsing, but this is not supported");
		964	}
		965	}
		966
		967	/* always use the TRANSFER macro */
		968	static void NOINLINE
723	transfer (pTHX_ struct coro prev, struct coro next, int flags)	969	transfer (pTHX_ struct coro prev, struct coro next)
724	{	970	{
725	dSTACKLEVEL;	971	dSTACKLEVEL;
726		972
		973	/* sometimes transfer is only called to set idle_sp */
		974	if (!next)
		975	{
		976	((coro_cctx *)prev)->idle_sp = STACKLEVEL;
		977	assert (((coro_cctx )prev)->idle_te = PL_top_env); / just for the side-effect when asserts are enabled */
		978	}
727	if (prev != next)	979	else if (prev != next)
728	{	980	{
729	if (next->mainstack)	981	coro_cctx *prev__cctx;
		982
		983	if (prev->flags & CF_NEW)
730	{	984	{
731	LOCK;	985	/* create a new empty context */
732	SAVE (prev, flags);	986	Newz (0, prev->cctx, 1, coro_cctx);
733	LOAD (next);	987	prev->flags &= ~CF_NEW;
734	UNLOCK;	988	prev->flags \|= CF_RUNNING;
735
736	/* mark this state as in-use */
737	next->mainstack = 0;
738	next->tmps_ix = -2;
739
740	/* stacklevel changed? if yes, grab the stack for us! */
741	if (flags & TRANSFER_SAVE_CCTXT)
742	{
743	if (!prev->stack)
744	allocate_stack (prev, 0);
745	else if (prev->cursp != stacklevel
746	&& prev->stack->usecnt > 1)
747	{
748	prev->gencnt = ++prev->stack->gencnt;
749	prev->stack->usecnt = 1;
750	}
751
752	/* has our stack been invalidated? */
753	if (next->stack && next->stack->gencnt != next->gencnt)
754	{
755	deallocate_stack (next);
756	allocate_stack (next, 1);
757	coro_create (&(next->stack->cctx),
758	continue_coro, (void *)next,
759	next->stack->sptr, labs (next->stack->ssize));
760	}
761
762	coro_transfer (&(prev->stack->cctx), &(next->stack->cctx));
763	prev->cursp = stacklevel;
764	/* don't add any code here */
765	}
766	else
767	next->cursp = stacklevel;
768	}	989	}
769	else if (next->tmps_ix == -2)	990
770	croak ("tried to transfer to running coroutine");	991	prev->flags &= ~CF_RUNNING;
		992	next->flags \|= CF_RUNNING;
		993
		994	LOCK;
		995
		996	if (next->flags & CF_NEW)
		997	{
		998	/* need to start coroutine */
		999	next->flags &= ~CF_NEW;
		1000	/* first get rid of the old state */
		1001	save_perl (aTHX_ prev);
		1002	/* setup coroutine call */
		1003	setup_coro (aTHX_ next);
		1004	}
771	else	1005	else
772	{	1006	{
773	LOCK;	1007	/* coroutine already started */
774	SAVE (prev, -1); /* first get rid of the old state */	1008	save_perl (aTHX_ prev);
775	UNLOCK;	1009	load_perl (aTHX_ next);
776
777	if (flags & TRANSFER_SAVE_CCTXT)
778	{
779	if (!prev->stack)
780	allocate_stack (prev, 0);
781
782	if (prev->stack->sptr && flags & TRANSFER_LAZY_STACK)
783	{
784	PL_top_env = &next->start_env;
785
786	setup_coro (next);
787	next->cursp = stacklevel;
788
789	prev->stack->refcnt++;
790	prev->stack->usecnt++;
791	next->stack = prev->stack;
792	next->gencnt = prev->gencnt;
793	}
794	else
795	{
796	assert (!next->stack);
797	allocate_stack (next, 1);
798	coro_create (&(next->stack->cctx),
799	setup_coro, (void *)next,
800	next->stack->sptr, labs (next->stack->ssize));
801	coro_transfer (&(prev->stack->cctx), &(next->stack->cctx));
802	prev->cursp = stacklevel;
803	/* don't add any code here */
804	}
805	}
806	else
807	{
808	setup_coro (next);
809	next->cursp = stacklevel;
810	}
811	}	1010	}
812	}
813		1011
814	LOCK;	1012	prev__cctx = prev->cctx;
815	if (coro_mortal)	1013
816	{	1014	/* possibly "free" the cctx */
817	SvREFCNT_dec (coro_mortal);	1015	if (prev__cctx->idle_sp == STACKLEVEL && !(prev__cctx->flags & CC_TRACE))
818	coro_mortal = 0;	1016	{
819	}	1017	/* I assume that STACKLEVEL is a stronger indicator than PL_top_env changes */
		1018	assert (("ERROR: current top_env must equal previous top_env", PL_top_env == prev__cctx->idle_te));
		1019
		1020	prev->cctx = 0;
		1021
		1022	cctx_put (prev__cctx);
		1023	}
		1024
		1025	++next->usecount;
		1026
		1027	if (!next->cctx)
		1028	next->cctx = cctx_get (aTHX);
		1029
		1030	if (prev__cctx != next->cctx)
		1031	{
		1032	prev__cctx->top_env = PL_top_env;
		1033	PL_top_env = next->cctx->top_env;
		1034	coro_transfer (&prev__cctx->cctx, &next->cctx->cctx);
		1035	}
		1036
		1037	free_coro_mortal (aTHX);
820	UNLOCK;	1038	UNLOCK;
		1039	}
821	}	1040	}
822		1041
823	#define SV_CORO(sv,func) \	1042	struct transfer_args
824	do { \	1043	{
825	if (SvROK (sv)) \	1044	struct coro prev, next;
826	sv = SvRV (sv); \	1045	};
827	\
828	if (SvTYPE (sv) == SVt_PVHV) \
829	{ \
830	HE he = hv_fetch_ent ((HV )sv, ucoro_state_sv, 0, ucoro_state_hash); \
831	\
832	if (!he) \
833	croak ("%s() -- %s is a hashref but lacks the " UCORO_STATE " key", func, # sv); \
834	\
835	(sv) = SvRV (HeVAL(he)); \
836	} \
837	\
838	/* must also be changed inside Coro::Cont::yield */ \
839	if (!SvOBJECT (sv) \|\| SvSTASH (sv) != coro_state_stash) \
840	croak ("%s() -- %s is not (and contains not) a Coro::State object", func, # sv); \
841	\
842	} while(0)
843		1046
844	#define SvSTATE(sv) (struct coro *)SvIV (sv)	1047	#define TRANSFER(ta) transfer (aTHX_ (ta).prev, (ta).next)
		1048	#define TRANSFER_CHECK(ta) transfer_check (aTHX_ (ta).prev, (ta).next)
		1049
		1050	/ high level stuff ******************************************************/
		1051
		1052	static int
		1053	coro_state_destroy (pTHX_ struct coro *coro)
		1054	{
		1055	if (coro->flags & CF_DESTROYED)
		1056	return 0;
		1057
		1058	coro->flags \|= CF_DESTROYED;
		1059
		1060	if (coro->flags & CF_READY)
		1061	{
		1062	/* reduce nready, as destroying a ready coro effectively unreadies it */
		1063	/* alternative: look through all ready queues and remove the coro */
		1064	LOCK;
		1065	--coro_nready;
		1066	UNLOCK;
		1067	}
		1068	else
		1069	coro->flags \|= CF_READY; /* make sure it is NOT put into the readyqueue */
		1070
		1071	if (coro->mainstack && coro->mainstack != main_mainstack)
		1072	{
		1073	struct coro temp;
		1074
		1075	assert (!(coro->flags & CF_RUNNING));
		1076
		1077	Zero (&temp, 1, struct coro);
		1078	temp.save = CORO_SAVE_ALL;
		1079
		1080	if (coro->flags & CF_RUNNING)
		1081	croak ("FATAL: tried to destroy currently running coroutine");
		1082
		1083	save_perl (aTHX_ &temp);
		1084	load_perl (aTHX_ coro);
		1085
		1086	coro_destroy_stacks (aTHX);
		1087
		1088	load_perl (aTHX_ &temp); /* this will get rid of defsv etc.. */
		1089
		1090	coro->mainstack = 0;
		1091	}
		1092
		1093	cctx_destroy (coro->cctx);
		1094	SvREFCNT_dec (coro->args);
		1095
		1096	if (coro->next) coro->next->prev = coro->prev;
		1097	if (coro->prev) coro->prev->next = coro->next;
		1098	if (coro == coro_first) coro_first = coro->next;
		1099
		1100	return 1;
		1101	}
		1102
		1103	static int
		1104	coro_state_free (pTHX_ SV sv, MAGIC mg)
		1105	{
		1106	struct coro coro = (struct coro )mg->mg_ptr;
		1107	mg->mg_ptr = 0;
		1108
		1109	coro->hv = 0;
		1110
		1111	if (--coro->refcnt < 0)
		1112	{
		1113	coro_state_destroy (aTHX_ coro);
		1114	Safefree (coro);
		1115	}
		1116
		1117	return 0;
		1118	}
		1119
		1120	static int
		1121	coro_state_dup (pTHX_ MAGIC mg, CLONE_PARAMS params)
		1122	{
		1123	struct coro coro = (struct coro )mg->mg_ptr;
		1124
		1125	++coro->refcnt;
		1126
		1127	return 0;
		1128	}
		1129
		1130	static MGVTBL coro_state_vtbl = {
		1131	0, 0, 0, 0,
		1132	coro_state_free,
		1133	0,
		1134	#ifdef MGf_DUP
		1135	coro_state_dup,
		1136	#else
		1137	# define MGf_DUP 0
		1138	#endif
		1139	};
845		1140
846	static void	1141	static void
		1142	prepare_transfer (pTHX_ struct transfer_args ta, SV prev_sv, SV *next_sv)
		1143	{
		1144	ta->prev = SvSTATE (prev_sv);
		1145	ta->next = SvSTATE (next_sv);
		1146	TRANSFER_CHECK (*ta);
		1147	}
		1148
		1149	static void
847	api_transfer(pTHX_ SV prev, SV next, int flags)	1150	api_transfer (SV prev_sv, SV next_sv)
848	{	1151	{
849	SV_CORO (prev, "Coro::transfer");	1152	dTHX;
850	SV_CORO (next, "Coro::transfer");	1153	struct transfer_args ta;
851		1154
852	transfer (aTHX_ SvSTATE (prev), SvSTATE (next), flags);	1155	prepare_transfer (aTHX_ &ta, prev_sv, next_sv);
		1156	TRANSFER (ta);
		1157	}
		1158
		1159	static int
		1160	api_save (SV *coro_sv, int new_save)
		1161	{
		1162	dTHX;
		1163	struct coro *coro = SvSTATE (coro_sv);
		1164	int old_save = coro->save;
		1165
		1166	if (new_save >= 0)
		1167	coro->save = new_save;
		1168
		1169	return old_save;
853	}	1170	}
854		1171
855	/ Coro ******************************************************************/	1172	/ Coro ******************************************************************/
856		1173
857	#define PRIO_MAX 3
858	#define PRIO_HIGH 1
859	#define PRIO_NORMAL 0
860	#define PRIO_LOW -1
861	#define PRIO_IDLE -3
862	#define PRIO_MIN -4
863
864	/* for Coro.pm */
865	static GV coro_current, coro_idle;
866	static AV *coro_ready[PRIO_MAX-PRIO_MIN+1];
867	static int coro_nready;
868
869	static void	1174	static void
870	coro_enq (pTHX_ SV *sv)	1175	coro_enq (pTHX_ SV *coro_sv)
871	{	1176	{
872	if (SvTYPE (sv) != SVt_PVHV)
873	croak ("Coro::ready tried to enqueue something that is not a coroutine");
874
875	SV *xprio = hv_fetch ((HV )sv, "prio", 4, 0);
876	int prio = xprio ? SvIV (*xprio) : PRIO_NORMAL;
877
878	prio = prio > PRIO_MAX ? PRIO_MAX
879	: prio < PRIO_MIN ? PRIO_MIN
880	: prio;
881
882	av_push (coro_ready [prio - PRIO_MIN], sv);	1177	av_push (coro_ready [SvSTATE (coro_sv)->prio - PRIO_MIN], coro_sv);
883	coro_nready++;
884	}	1178	}
885		1179
886	static SV *	1180	static SV *
887	coro_deq (pTHX_ int min_prio)	1181	coro_deq (pTHX_ int min_prio)
888	{	1182	{
…		…
891	min_prio -= PRIO_MIN;	1185	min_prio -= PRIO_MIN;
892	if (min_prio < 0)	1186	if (min_prio < 0)
893	min_prio = 0;	1187	min_prio = 0;
894		1188
895	for (prio = PRIO_MAX - PRIO_MIN + 1; --prio >= min_prio; )	1189	for (prio = PRIO_MAX - PRIO_MIN + 1; --prio >= min_prio; )
896	if (av_len (coro_ready[prio]) >= 0)	1190	if (AvFILLp (coro_ready [prio]) >= 0)
897	{
898	coro_nready--;
899	return av_shift (coro_ready[prio]);	1191	return av_shift (coro_ready [prio]);
900	}
901		1192
902	return 0;	1193	return 0;
903	}	1194	}
904		1195
		1196	static int
		1197	api_ready (SV *coro_sv)
		1198	{
		1199	dTHX;
		1200	struct coro *coro;
		1201
		1202	if (SvROK (coro_sv))
		1203	coro_sv = SvRV (coro_sv);
		1204
		1205	coro = SvSTATE (coro_sv);
		1206
		1207	if (coro->flags & CF_READY)
		1208	return 0;
		1209
		1210	coro->flags \|= CF_READY;
		1211
		1212	LOCK;
		1213	coro_enq (aTHX_ SvREFCNT_inc (coro_sv));
		1214	++coro_nready;
		1215	UNLOCK;
		1216
		1217	return 1;
		1218	}
		1219
		1220	static int
		1221	api_is_ready (SV *coro_sv)
		1222	{
		1223	dTHX;
		1224	return !!(SvSTATE (coro_sv)->flags & CF_READY);
		1225	}
		1226
905	static void	1227	static void
906	api_ready (SV *coro)	1228	prepare_schedule (pTHX_ struct transfer_args *ta)
907	{	1229	{
908	dTHX;	1230	SV prev_sv, next_sv;
909		1231
910	if (SvROK (coro))	1232	for (;;)
911	coro = SvRV (coro);	1233	{
		1234	LOCK;
		1235	next_sv = coro_deq (aTHX_ PRIO_MIN);
		1236
		1237	/* nothing to schedule: call the idle handler */
		1238	if (!next_sv)
		1239	{
		1240	dSP;
		1241	UNLOCK;
		1242
		1243	ENTER;
		1244	SAVETMPS;
		1245
		1246	PUSHMARK (SP);
		1247	PUTBACK;
		1248	call_sv (get_sv ("Coro::idle", FALSE), G_DISCARD);
		1249
		1250	FREETMPS;
		1251	LEAVE;
		1252	continue;
		1253	}
		1254
		1255	ta->next = SvSTATE (next_sv);
		1256
		1257	/* cannot transfer to destroyed coros, skip and look for next */
		1258	if (ta->next->flags & CF_DESTROYED)
		1259	{
		1260	UNLOCK;
		1261	SvREFCNT_dec (next_sv);
		1262	/* coro_nready is already taken care of by destroy */
		1263	continue;
		1264	}
		1265
		1266	--coro_nready;
		1267	UNLOCK;
		1268	break;
		1269	}
		1270
		1271	/* free this only after the transfer */
		1272	prev_sv = SvRV (coro_current);
		1273	ta->prev = SvSTATE (prev_sv);
		1274	TRANSFER_CHECK (*ta);
		1275	assert (ta->next->flags & CF_READY);
		1276	ta->next->flags &= ~CF_READY;
		1277	SvRV_set (coro_current, next_sv);
912		1278
913	LOCK;	1279	LOCK;
914	coro_enq (aTHX_ SvREFCNT_inc (coro));	1280	free_coro_mortal (aTHX);
		1281	coro_mortal = prev_sv;
915	UNLOCK;	1282	UNLOCK;
		1283	}
		1284
		1285	static void
		1286	prepare_cede (pTHX_ struct transfer_args *ta)
		1287	{
		1288	api_ready (coro_current);
		1289	prepare_schedule (aTHX_ ta);
		1290	}
		1291
		1292	static int
		1293	prepare_cede_notself (pTHX_ struct transfer_args *ta)
		1294	{
		1295	if (coro_nready)
		1296	{
		1297	SV *prev = SvRV (coro_current);
		1298	prepare_schedule (aTHX_ ta);
		1299	api_ready (prev);
		1300	return 1;
		1301	}
		1302	else
		1303	return 0;
916	}	1304	}
917		1305
918	static void	1306	static void
919	api_schedule (void)	1307	api_schedule (void)
920	{	1308	{
921	dTHX;	1309	dTHX;
		1310	struct transfer_args ta;
922		1311
923	SV prev, next;	1312	prepare_schedule (aTHX_ &ta);
924		1313	TRANSFER (ta);
925	LOCK;
926
927	prev = SvRV (GvSV (coro_current));
928	next = coro_deq (aTHX_ PRIO_MIN);
929
930	if (!next)
931	next = SvREFCNT_inc (SvRV (GvSV (coro_idle)));
932
933	/* free this only after the transfer */
934	coro_mortal = prev;
935	SV_CORO (prev, "Coro::schedule");
936
937	SvRV (GvSV (coro_current)) = next;
938
939	SV_CORO (next, "Coro::schedule");
940
941	UNLOCK;
942
943	transfer (aTHX_ SvSTATE (prev), SvSTATE (next),
944	TRANSFER_SAVE_ALL \| TRANSFER_LAZY_STACK);
945	}	1314	}
946		1315
947	static void	1316	static int
948	api_cede (void)	1317	api_cede (void)
949	{	1318	{
950	dTHX;	1319	dTHX;
		1320	struct transfer_args ta;
951		1321
952	LOCK;	1322	prepare_cede (aTHX_ &ta);
953	coro_enq (aTHX_ SvREFCNT_inc (SvRV (GvSV (coro_current))));
954	UNLOCK;
955		1323
956	api_schedule ();	1324	if (ta.prev != ta.next)
		1325	{
		1326	TRANSFER (ta);
		1327	return 1;
		1328	}
		1329	else
		1330	return 0;
		1331	}
		1332
		1333	static int
		1334	api_cede_notself (void)
		1335	{
		1336	dTHX;
		1337	struct transfer_args ta;
		1338
		1339	if (prepare_cede_notself (aTHX_ &ta))
		1340	{
		1341	TRANSFER (ta);
		1342	return 1;
		1343	}
		1344	else
		1345	return 0;
957	}	1346	}
958		1347
959	MODULE = Coro::State PACKAGE = Coro::State	1348	MODULE = Coro::State PACKAGE = Coro::State
960		1349
961	PROTOTYPES: ENABLE	1350	PROTOTYPES: DISABLE
962		1351
963	BOOT:	1352	BOOT:
964	{ /* {} necessary for stoopid perl-5.6.x */	1353	{
965	#ifdef USE_ITHREADS	1354	#ifdef USE_ITHREADS
966	MUTEX_INIT (&coro_mutex);	1355	MUTEX_INIT (&coro_mutex);
967	#endif	1356	#endif
		1357	BOOT_PAGESIZE;
968		1358
969	ucoro_state_sv = newSVpv (UCORO_STATE, sizeof(UCORO_STATE) - 1);
970	PERL_HASH(ucoro_state_hash, UCORO_STATE, sizeof(UCORO_STATE) - 1);
971	coro_state_stash = gv_stashpv ("Coro::State", TRUE);	1359	coro_state_stash = gv_stashpv ("Coro::State", TRUE);
972		1360
		1361	newCONSTSUB (coro_state_stash, "CC_TRACE" , newSViv (CC_TRACE));
		1362	newCONSTSUB (coro_state_stash, "CC_TRACE_SUB" , newSViv (CC_TRACE_SUB));
		1363	newCONSTSUB (coro_state_stash, "CC_TRACE_LINE", newSViv (CC_TRACE_LINE));
		1364	newCONSTSUB (coro_state_stash, "CC_TRACE_ALL" , newSViv (CC_TRACE_ALL));
		1365
973	newCONSTSUB (coro_state_stash, "SAVE_DEFAV", newSViv (TRANSFER_SAVE_DEFAV));	1366	newCONSTSUB (coro_state_stash, "SAVE_DEFAV", newSViv (CORO_SAVE_DEFAV));
974	newCONSTSUB (coro_state_stash, "SAVE_DEFSV", newSViv (TRANSFER_SAVE_DEFSV));	1367	newCONSTSUB (coro_state_stash, "SAVE_DEFSV", newSViv (CORO_SAVE_DEFSV));
975	newCONSTSUB (coro_state_stash, "SAVE_ERRSV", newSViv (TRANSFER_SAVE_ERRSV));	1368	newCONSTSUB (coro_state_stash, "SAVE_ERRSV", newSViv (CORO_SAVE_ERRSV));
		1369	newCONSTSUB (coro_state_stash, "SAVE_IRSSV", newSViv (CORO_SAVE_IRSSV));
		1370	newCONSTSUB (coro_state_stash, "SAVE_DEFFH", newSViv (CORO_SAVE_DEFFH));
976	newCONSTSUB (coro_state_stash, "SAVE_CCTXT", newSViv (TRANSFER_SAVE_CCTXT));	1371	newCONSTSUB (coro_state_stash, "SAVE_DEF", newSViv (CORO_SAVE_DEF));
		1372	newCONSTSUB (coro_state_stash, "SAVE_ALL", newSViv (CORO_SAVE_ALL));
977		1373
978	main_mainstack = PL_mainstack;	1374	main_mainstack = PL_mainstack;
		1375	main_top_env = PL_top_env;
		1376
		1377	while (main_top_env->je_prev)
		1378	main_top_env = main_top_env->je_prev;
979		1379
980	coroapi.ver = CORO_API_VERSION;	1380	coroapi.ver = CORO_API_VERSION;
981	coroapi.transfer = api_transfer;	1381	coroapi.transfer = api_transfer;
982	}
983		1382
984	Coro::State	1383	assert (("PRIO_NORMAL must be 0", !PRIO_NORMAL));
985	_newprocess(args)	1384	}
986	SV * args	1385
987	PROTOTYPE: $	1386	SV *
		1387	new (char *klass, ...)
988	CODE:	1388	CODE:
989	Coro__State coro;	1389	{
		1390	struct coro *coro;
		1391	HV *hv;
		1392	int i;
990		1393
991	if (!SvROK (args) \|\| SvTYPE (SvRV (args)) != SVt_PVAV)
992	croak ("Coro::State::_newprocess expects an arrayref");
993
994	Newz (0, coro, 1, struct coro);	1394	Newz (0, coro, 1, struct coro);
		1395	coro->args = newAV ();
		1396	coro->save = CORO_SAVE_DEF;
		1397	coro->flags = CF_NEW;
995		1398
996	coro->args = (AV *)SvREFCNT_inc (SvRV (args));	1399	if (coro_first) coro_first->prev = coro;
997	/coro->mainstack = 0; //actual work is done inside transfer /	1400	coro->next = coro_first;
998	/coro->stack = 0;/	1401	coro_first = coro;
999		1402
1000	/* same as JMPENV_BOOTSTRAP */	1403	coro->hv = hv = newHV ();
1001	/* we might be able to recycle start_env, but safe is safe */	1404	sv_magicext ((SV )hv, 0, PERL_MAGIC_ext, &coro_state_vtbl, (char )coro, 0)->mg_flags \|= MGf_DUP;
1002	/Zero(&coro->start_env, 1, JMPENV);/	1405	RETVAL = sv_bless (newRV_noinc ((SV *)hv), gv_stashpv (klass, 1));
1003	coro->start_env.je_ret = -1;
1004	coro->start_env.je_mustcatch = TRUE;
1005		1406
1006	RETVAL = coro;	1407	for (i = 1; i < items; i++)
		1408	av_push (coro->args, newSVsv (ST (i)));
		1409	}
1007	OUTPUT:	1410	OUTPUT:
1008	RETVAL	1411	RETVAL
1009		1412
		1413	int
		1414	save (SV *coro, int new_save = -1)
		1415	CODE:
		1416	RETVAL = api_save (coro, new_save);
		1417	OUTPUT:
		1418	RETVAL
		1419
		1420	int
		1421	save_also (SV *coro_sv, int save_also)
		1422	CODE:
		1423	{
		1424	struct coro *coro = SvSTATE (coro_sv);
		1425	RETVAL = coro->save;
		1426	coro->save \|= save_also;
		1427	}
		1428	OUTPUT:
		1429	RETVAL
		1430
1010	void	1431	void
1011	transfer(prev, next, flags)	1432	_set_stacklevel (...)
1012	SV *prev	1433	ALIAS:
1013	SV *next	1434	Coro::State::transfer = 1
1014	int flags	1435	Coro::schedule = 2
1015	PROTOTYPE: @	1436	Coro::cede = 3
		1437	Coro::cede_notself = 4
1016	CODE:	1438	CODE:
1017	PUTBACK;	1439	{
1018	SV_CORO (next, "Coro::transfer");	1440	struct transfer_args ta;
1019	SV_CORO (prev, "Coro::transfer");	1441
1020	transfer (aTHX_ SvSTATE (prev), SvSTATE (next), flags);	1442	switch (ix)
1021	SPAGAIN;	1443	{
		1444	case 0:
		1445	ta.prev = (struct coro )INT2PTR (coro_cctx , SvIV (ST (0)));
		1446	ta.next = 0;
		1447	break;
		1448
		1449	case 1:
		1450	if (items != 2)
		1451	croak ("Coro::State::transfer (prev,next) expects two arguments, not %d", items);
		1452
		1453	prepare_transfer (aTHX_ &ta, ST (0), ST (1));
		1454	break;
		1455
		1456	case 2:
		1457	prepare_schedule (aTHX_ &ta);
		1458	break;
		1459
		1460	case 3:
		1461	prepare_cede (aTHX_ &ta);
		1462	break;
		1463
		1464	case 4:
		1465	if (!prepare_cede_notself (aTHX_ &ta))
		1466	XSRETURN_EMPTY;
		1467
		1468	break;
		1469	}
		1470
		1471	BARRIER;
		1472	TRANSFER (ta);
		1473
		1474	if (GIMME_V != G_VOID && ta.next != ta.prev)
		1475	XSRETURN_YES;
		1476	}
		1477
		1478	bool
		1479	_destroy (SV *coro_sv)
		1480	CODE:
		1481	RETVAL = coro_state_destroy (aTHX_ SvSTATE (coro_sv));
		1482	OUTPUT:
		1483	RETVAL
1022		1484
1023	void	1485	void
1024	DESTROY(coro)
1025	Coro::State coro
1026	CODE:
1027
1028	if (coro->mainstack && coro->mainstack != main_mainstack)
1029	{
1030	struct coro temp;
1031
1032	PUTBACK;
1033	SAVE (aTHX_ (&temp), TRANSFER_SAVE_ALL);
1034	LOAD (aTHX_ coro);
1035	SPAGAIN;
1036
1037	destroy_stacks (aTHX);
1038
1039	LOAD ((&temp)); /* this will get rid of defsv etc.. */
1040	SPAGAIN;
1041
1042	coro->mainstack = 0;
1043	}
1044
1045	deallocate_stack (coro);
1046	SvREFCNT_dec (coro->args);
1047	Safefree (coro);
1048
1049	void
1050	_exit(code)	1486	_exit (code)
1051	int code	1487	int code
1052	PROTOTYPE: $	1488	PROTOTYPE: $
1053	CODE:	1489	CODE:
1054	_exit (code);	1490	_exit (code);
1055		1491
1056	MODULE = Coro::State PACKAGE = Coro::Cont	1492	int
		1493	cctx_stacksize (int new_stacksize = 0)
		1494	CODE:
		1495	RETVAL = coro_stacksize;
		1496	if (new_stacksize)
		1497	coro_stacksize = new_stacksize;
		1498	OUTPUT:
		1499	RETVAL
1057		1500
1058	# this is slightly dirty (should expose a c-level api)	1501	int
		1502	cctx_count ()
		1503	CODE:
		1504	RETVAL = cctx_count;
		1505	OUTPUT:
		1506	RETVAL
		1507
		1508	int
		1509	cctx_idle ()
		1510	CODE:
		1511	RETVAL = cctx_idle;
		1512	OUTPUT:
		1513	RETVAL
1059		1514
1060	void	1515	void
1061	yield(...)	1516	list ()
1062	PROTOTYPE: @	1517	PPCODE:
		1518	{
		1519	struct coro *coro;
		1520	for (coro = coro_first; coro; coro = coro->next)
		1521	if (coro->hv)
		1522	XPUSHs (sv_2mortal (newRV_inc ((SV *)coro->hv)));
		1523	}
		1524
		1525	void
		1526	call (Coro::State coro, SV *coderef)
		1527	ALIAS:
		1528	eval = 1
		1529	CODE:
		1530	{
		1531	if (coro->mainstack)
		1532	{
		1533	struct coro temp;
		1534	Zero (&temp, 1, struct coro);
		1535	temp.save = CORO_SAVE_ALL;
		1536
		1537	if (!(coro->flags & CF_RUNNING))
		1538	{
		1539	save_perl (aTHX_ &temp);
		1540	load_perl (aTHX_ coro);
		1541	}
		1542
		1543	{
		1544	dSP;
		1545	ENTER;
		1546	SAVETMPS;
		1547	PUSHMARK (SP);
		1548	PUTBACK;
		1549	if (ix)
		1550	eval_sv (coderef, 0);
		1551	else
		1552	call_sv (coderef, G_KEEPERR \| G_EVAL \| G_VOID \| G_DISCARD);
		1553	SPAGAIN;
		1554	FREETMPS;
		1555	LEAVE;
		1556	PUTBACK;
		1557	}
		1558
		1559	if (!(coro->flags & CF_RUNNING))
		1560	{
		1561	save_perl (aTHX_ coro);
		1562	load_perl (aTHX_ &temp);
		1563	}
		1564	}
		1565	}
		1566
		1567	SV *
		1568	is_ready (Coro::State coro)
		1569	PROTOTYPE: $
		1570	ALIAS:
		1571	is_ready = CF_READY
		1572	is_running = CF_RUNNING
		1573	is_new = CF_NEW
		1574	is_destroyed = CF_DESTROYED
		1575	CODE:
		1576	RETVAL = boolSV (coro->flags & ix);
		1577	OUTPUT:
		1578	RETVAL
		1579
		1580	void
		1581	trace (Coro::State coro, int flags = CC_TRACE \| CC_TRACE_SUB)
		1582	CODE:
		1583	if (flags & CC_TRACE)
		1584	{
		1585	if (!coro->cctx)
		1586	coro->cctx = cctx_new ();
		1587	else if (!(coro->cctx->flags & CC_TRACE))
		1588	croak ("cannot enable tracing on coroutine with custom stack");
		1589
		1590	coro->cctx->flags \|= flags & (CC_TRACE \| CC_TRACE_ALL);
		1591	}
		1592	else
		1593	if (coro->cctx && coro->cctx->flags & CC_TRACE)
		1594	{
		1595	coro->cctx->flags &= ~(CC_TRACE \| CC_TRACE_ALL);
		1596	coro->cctx->flags \|= CC_NOREUSE;
		1597
		1598	if (coro->flags & CF_RUNNING)
		1599	PL_runops = RUNOPS_DEFAULT;
		1600	else
		1601	coro->runops = RUNOPS_DEFAULT;
		1602	}
		1603
		1604	SV *
		1605	has_stack (Coro::State coro)
		1606	PROTOTYPE: $
		1607	CODE:
		1608	RETVAL = boolSV (!!coro->cctx);
		1609	OUTPUT:
		1610	RETVAL
		1611
		1612	int
		1613	is_traced (Coro::State coro)
		1614	PROTOTYPE: $
		1615	CODE:
		1616	RETVAL = (coro->cctx ? coro->cctx->flags : 0) & CC_TRACE_ALL;
		1617	OUTPUT:
		1618	RETVAL
		1619
		1620	IV
		1621	rss (Coro::State coro)
		1622	PROTOTYPE: $
		1623	ALIAS:
		1624	usecount = 1
1063	CODE:	1625	CODE:
1064	SV *yieldstack;	1626	switch (ix)
1065	SV *sv;	1627	{
1066	AV *defav = GvAV (PL_defgv);	1628	case 0: RETVAL = coro_rss (aTHX_ coro); break;
1067	struct coro prev, next;	1629	case 1: RETVAL = coro->usecount; break;
1068
1069	yieldstack = *hv_fetch (
1070	(HV *)SvRV (GvSV (coro_current)),
1071	"yieldstack", sizeof ("yieldstack") - 1,
1072	0	1630	}
1073	);	1631	OUTPUT:
		1632	RETVAL
1074		1633
1075	/* set up @_ -- ugly */
1076	av_clear (defav);
1077	av_fill (defav, items - 1);
1078	while (items--)
1079	av_store (defav, items, SvREFCNT_inc (ST(items)));
1080
1081	sv = av_pop ((AV *)SvRV (yieldstack));
1082	prev = (struct coro )SvIV ((SV)SvRV (av_fetch ((AV )SvRV (sv), 0, 0)));
1083	next = (struct coro )SvIV ((SV)SvRV (av_fetch ((AV )SvRV (sv), 1, 0)));
1084	SvREFCNT_dec (sv);
1085
1086	transfer (aTHX_ prev, next, 0);
1087		1634
1088	MODULE = Coro::State PACKAGE = Coro	1635	MODULE = Coro::State PACKAGE = Coro
1089		1636
1090	# this is slightly dirty (should expose a c-level api)
1091
1092	BOOT:	1637	BOOT:
1093	{	1638	{
1094	int i;	1639	int i;
		1640
		1641	sv_pool_rss = get_sv ("Coro::POOL_RSS" , TRUE);
		1642	sv_pool_size = get_sv ("Coro::POOL_SIZE" , TRUE);
		1643	av_async_pool = get_av ("Coro::async_pool", TRUE);
		1644
		1645	coro_current = get_sv ("Coro::current", FALSE);
		1646	SvREADONLY_on (coro_current);
		1647
1095	HV *stash = gv_stashpv ("Coro", TRUE);	1648	coro_stash = gv_stashpv ("Coro", TRUE);
1096		1649
1097	newCONSTSUB (stash, "PRIO_MAX", newSViv (PRIO_MAX));	1650	newCONSTSUB (coro_stash, "PRIO_MAX", newSViv (PRIO_MAX));
1098	newCONSTSUB (stash, "PRIO_HIGH", newSViv (PRIO_HIGH));	1651	newCONSTSUB (coro_stash, "PRIO_HIGH", newSViv (PRIO_HIGH));
1099	newCONSTSUB (stash, "PRIO_NORMAL", newSViv (PRIO_NORMAL));	1652	newCONSTSUB (coro_stash, "PRIO_NORMAL", newSViv (PRIO_NORMAL));
1100	newCONSTSUB (stash, "PRIO_LOW", newSViv (PRIO_LOW));	1653	newCONSTSUB (coro_stash, "PRIO_LOW", newSViv (PRIO_LOW));
1101	newCONSTSUB (stash, "PRIO_IDLE", newSViv (PRIO_IDLE));	1654	newCONSTSUB (coro_stash, "PRIO_IDLE", newSViv (PRIO_IDLE));
1102	newCONSTSUB (stash, "PRIO_MIN", newSViv (PRIO_MIN));	1655	newCONSTSUB (coro_stash, "PRIO_MIN", newSViv (PRIO_MIN));
1103
1104	coro_current = gv_fetchpv ("Coro::current", TRUE, SVt_PV);
1105	coro_idle = gv_fetchpv ("Coro::idle" , TRUE, SVt_PV);
1106		1656
1107	for (i = PRIO_MAX - PRIO_MIN + 1; i--; )	1657	for (i = PRIO_MAX - PRIO_MIN + 1; i--; )
1108	coro_ready[i] = newAV ();	1658	coro_ready[i] = newAV ();
1109		1659
1110	{	1660	{
1111	SV *sv = perl_get_sv("Coro::API", 1);	1661	SV *sv = perl_get_sv("Coro::API", 1);
1112		1662
1113	coroapi.schedule = api_schedule;	1663	coroapi.schedule = api_schedule;
		1664	coroapi.save = api_save;
1114	coroapi.cede = api_cede;	1665	coroapi.cede = api_cede;
		1666	coroapi.cede_notself = api_cede_notself;
1115	coroapi.ready = api_ready;	1667	coroapi.ready = api_ready;
		1668	coroapi.is_ready = api_is_ready;
1116	coroapi.nready = &coro_nready;	1669	coroapi.nready = &coro_nready;
1117	coroapi.current = coro_current;	1670	coroapi.current = coro_current;
1118		1671
1119	GCoroAPI = &coroapi;	1672	GCoroAPI = &coroapi;
1120	sv_setiv(sv, (IV)&coroapi);	1673	sv_setiv (sv, (IV)&coroapi);
1121	SvREADONLY_on(sv);	1674	SvREADONLY_on (sv);
1122	}	1675	}
1123	}	1676	}
1124		1677
1125	#if !PERL_MICRO
1126
1127	void	1678	void
1128	ready(self)	1679	_set_current (SV *current)
1129	SV * self
1130	PROTOTYPE: $	1680	PROTOTYPE: $
1131	CODE:	1681	CODE:
1132	api_ready (self);	1682	SvREFCNT_dec (SvRV (coro_current));
1133		1683	SvRV_set (coro_current, SvREFCNT_inc (SvRV (current)));
1134	#endif
1135		1684
1136	int	1685	int
		1686	prio (Coro::State coro, int newprio = 0)
		1687	ALIAS:
		1688	nice = 1
		1689	CODE:
		1690	{
		1691	RETVAL = coro->prio;
		1692
		1693	if (items > 1)
		1694	{
		1695	if (ix)
		1696	newprio = coro->prio - newprio;
		1697
		1698	if (newprio < PRIO_MIN) newprio = PRIO_MIN;
		1699	if (newprio > PRIO_MAX) newprio = PRIO_MAX;
		1700
		1701	coro->prio = newprio;
		1702	}
		1703	}
		1704	OUTPUT:
		1705	RETVAL
		1706
		1707	SV *
		1708	ready (SV *self)
		1709	PROTOTYPE: $
		1710	CODE:
		1711	RETVAL = boolSV (api_ready (self));
		1712	OUTPUT:
		1713	RETVAL
		1714
		1715	int
1137	nready(...)	1716	nready (...)
1138	PROTOTYPE:	1717	PROTOTYPE:
1139	CODE:	1718	CODE:
1140	RETVAL = coro_nready;	1719	RETVAL = coro_nready;
1141	OUTPUT:	1720	OUTPUT:
1142	RETVAL	1721	RETVAL
1143		1722
		1723	# for async_pool speedup
1144	void	1724	void
1145	schedule(...)	1725	_pool_1 (SV *cb)
1146	PROTOTYPE:
1147	CODE:	1726	CODE:
1148	api_schedule ();	1727	{
		1728	int i, len;
		1729	HV hv = (HV )SvRV (coro_current);
		1730	AV *defav = GvAV (PL_defgv);
		1731	SV *invoke = hv_delete (hv, "_invoke", sizeof ("_invoke") - 1, 0);
		1732	AV *invoke_av;
		1733
		1734	if (!invoke)
		1735	croak ("\3terminate\2\n");
		1736
		1737	hv_store (hv, "desc", sizeof ("desc") - 1,
		1738	newSVpvn ("[async_pool]", sizeof ("[async_pool]") - 1), 0);
		1739
		1740	invoke_av = (AV *)SvRV (invoke);
		1741	len = av_len (invoke_av);
		1742
		1743	sv_setsv (cb, AvARRAY (invoke_av)[0]);
		1744
		1745	if (len > 0)
		1746	{
		1747	av_fill (defav, len - 1);
		1748	for (i = 0; i < len; ++i)
		1749	av_store (defav, i, SvREFCNT_inc (AvARRAY (invoke_av)[i + 1]));
		1750	}
		1751
		1752	SvREFCNT_dec (invoke);
		1753	}
1149		1754
1150	void	1755	void
1151	cede(...)	1756	_pool_2 (SV *cb)
1152	PROTOTYPE:
1153	CODE:	1757	CODE:
1154	api_cede ();	1758	{
		1759	struct coro *coro = SvSTATE (coro_current);
1155		1760
1156	# and these are hacks	1761	sv_setsv (cb, &PL_sv_undef);
		1762
		1763	if (coro_rss (aTHX_ coro) > SvIV (sv_pool_rss)
		1764	\|\| av_len (av_async_pool) + 1 >= SvIV (sv_pool_size))
		1765	croak ("\3terminate\2\n");
		1766
		1767	av_clear (GvAV (PL_defgv));
		1768	hv_store ((HV *)SvRV (coro_current), "desc", sizeof ("desc") - 1,
		1769	newSVpvn ("[async_pool idle]", sizeof ("[async_pool idle]") - 1), 0);
		1770	coro->save = CORO_SAVE_DEF;
		1771	coro->prio = 0;
		1772	av_push (av_async_pool, newSVsv (coro_current));
		1773	}
		1774
		1775
		1776	MODULE = Coro::State PACKAGE = Coro::AIO
		1777
1157	SV *	1778	SV *
1158	_aio_get_state ()	1779	_get_state ()
1159	CODE:	1780	CODE:
1160	{	1781	{
1161	struct {	1782	struct io_state *data;
1162	int errorno;
1163	int laststype;
1164	int laststatval;
1165	Stat_t statcache;
1166	} data;
1167		1783
		1784	RETVAL = newSV (sizeof (struct io_state));
		1785	data = (struct io_state *)SvPVX (RETVAL);
		1786	SvCUR_set (RETVAL, sizeof (struct io_state));
		1787	SvPOK_only (RETVAL);
		1788
1168	data.errorno = errno;	1789	data->errorno = errno;
1169	data.laststype = PL_laststype;	1790	data->laststype = PL_laststype;
1170	data.laststatval = PL_laststatval;	1791	data->laststatval = PL_laststatval;
1171	data.statcache = PL_statcache;	1792	data->statcache = PL_statcache;
1172
1173	RETVAL = newSVpvn ((char *)&data, sizeof data);
1174	}	1793	}
1175	OUTPUT:	1794	OUTPUT:
1176	RETVAL	1795	RETVAL
1177		1796
1178	void	1797	void
1179	_aio_set_state (char *data_)	1798	_set_state (char *data_)
1180	PROTOTYPE: $	1799	PROTOTYPE: $
1181	CODE:	1800	CODE:
1182	{	1801	{
1183	struct {	1802	struct io_state data = (void )data_;
1184	int errorno;
1185	int laststype;
1186	int laststatval;
1187	Stat_t statcache;
1188	} data = (void )data_;
1189		1803
1190	errno = data->errorno;	1804	errno = data->errorno;
1191	PL_laststype = data->laststype;	1805	PL_laststype = data->laststype;
1192	PL_laststatval = data->laststatval;	1806	PL_laststatval = data->laststatval;
1193	PL_statcache = data->statcache;	1807	PL_statcache = data->statcache;
1194	}	1808	}
		1809

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Comparing Coro/Coro/State.xs (file contents): Revision 1.73 by root, Sat Feb 4 06:01:13 2006 UTC vs. Revision 1.172 by root, Sun Sep 30 13:15:01 2007 UTC

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Comparing Coro/Coro/State.xs (file contents):
Revision 1.73 by root, Sat Feb 4 06:01:13 2006 UTC vs.
Revision 1.172 by root, Sun Sep 30 13:15:01 2007 UTC