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

Comparing Coro/Coro/State.xs (file contents):
Revision 1.87 by root, Fri Nov 24 13:40:36 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 */
		76	#ifndef SvRV_set
		77	# define SvRV_set(s,v) SvRV(s) = (v)
		78	#endif
33		79
34	#if !__i386 && !__x86_64 && !__powerpc && !__m68k && !__alpha && !__mips && !__sparc64	80	#if !__i386 && !__x86_64 && !__powerpc && !__m68k && !__alpha && !__mips && !__sparc64
35	# undef STACKGUARD	81	# undef CORO_STACKGUARD
36	#endif
37
38	#ifndef STACKGUARD
39	# define STACKGUARD 0
40	#endif
41
42	#ifdef HAVE_MMAP
43	# include <unistd.h>
44	# include <sys/mman.h>
45	# ifndef MAP_ANONYMOUS
46	# ifdef MAP_ANON
47	# define MAP_ANONYMOUS MAP_ANON
48	# else
49	# undef HAVE_MMAP
50	# endif
51	# endif	82	#endif
52	# include <limits.h>	83
53	# ifndef PAGESIZE	84	#ifndef CORO_STACKGUARD
54	# define PAGESIZE pagesize	85	# define CORO_STACKGUARD 0
55	# define BOOT_PAGESIZE pagesize = sysconf (_SC_PAGESIZE)
56	static long pagesize;
57	# else
58	# define BOOT_PAGESIZE
59	# endif	86	#endif
60	#endif
61		87
62	#define SUB_INIT "Coro::State::initialize"	88	/* prefer perl internal functions over our own? */
63	#define UCORO_STATE "_coro_state"	89	#ifndef CORO_PREFER_PERL_FUNCTIONS
		90	# define CORO_PREFER_PERL_FUNCTIONS 0
		91	#endif
64		92
65	/* The next macro should declare a variable stacklevel that contains and approximation	93	/* The next macros try to return the current stack pointer, in an as
66	* to the current C stack pointer. Its property is that it changes with each call	94	* portable way as possible. */
67	* and should be unique. */	95	#define dSTACKLEVEL volatile char stacklevel
68	#define dSTACKLEVEL void *stacklevel = &stacklevel	96	#define STACKLEVEL ((void *)&stacklevel)
69		97
70	#define IN_DESTRUCT (PL_main_cv == Nullcv)	98	#define IN_DESTRUCT (PL_main_cv == Nullcv)
71		99
72	#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))
73		109
74	#include "CoroAPI.h"	110	#include "CoroAPI.h"
75		111
76	#ifdef USE_ITHREADS	112	#ifdef USE_ITHREADS
77	static perl_mutex coro_mutex;	113	static perl_mutex coro_mutex;
…		…
80	#else	116	#else
81	# define LOCK (void)0	117	# define LOCK (void)0
82	# define UNLOCK (void)0	118	# define UNLOCK (void)0
83	#endif	119	#endif
84		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;
85	static struct CoroAPI coroapi;	131	static struct CoroAPI coroapi;
86	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;
87	static HV *coro_state_stash;	134	static HV coro_state_stash, coro_stash;
88	static SV *ucoro_state_sv;
89	static U32 ucoro_state_hash;
90	static SV coro_mortal; / will be freed after next transfer */	135	static SV coro_mortal; / will be freed after next transfer */
91		136
92	/* 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 */
93	typedef struct {	155	typedef struct coro_cctx {
94	int refcnt; /* pointer reference counter */	156	struct coro_cctx *next;
95	int usecnt; /* shared by how many coroutines */
96	int gencnt; /* generation counter */
97		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;
98	coro_context cctx;	166	coro_context cctx;
99		167
100	void *sptr;	168	#if CORO_USE_VALGRIND
101	long ssize; /* positive == mmap, otherwise malloc */	169	int valgrind_id;
102	} coro_stack;	170	#endif
		171	unsigned char flags;
		172	} coro_cctx;
103		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 */
104	struct coro {	182	struct coro {
105	/* the optional C context */	183	/* the c coroutine allocated to this perl coroutine, if any */
106	coro_stack *stack;	184	coro_cctx *cctx;
107	void *cursp;
108	int gencnt;
109
110	/* optionally saved, might be zero */
111	AV *defav;
112	SV *defsv;
113	SV *errsv;
114
115	/* saved global state not related to stacks */
116	U8 dowarn;
117	I32 in_eval;
118
119	/* the stacks and related info (callchain etc..) */
120	PERL_SI *curstackinfo;
121	AV *curstack;
122	AV *mainstack;
123	SV **stack_sp;
124	OP *op;
125	SV **curpad;
126	AV *comppad;
127	CV *compcv;
128	SV **stack_base;
129	SV **stack_max;
130	SV **tmps_stack;
131	I32 tmps_floor;
132	I32 tmps_ix;
133	I32 tmps_max;
134	I32 *markstack;
135	I32 *markstack_ptr;
136	I32 *markstack_max;
137	I32 *scopestack;
138	I32 scopestack_ix;
139	I32 scopestack_max;
140	ANY *savestack;
141	I32 savestack_ix;
142	I32 savestack_max;
143	OP **retstack;
144	I32 retstack_ix;
145	I32 retstack_max;
146	PMOP *curpm;
147	COP *curcop;
148	JMPENV *top_env;
149
150	/* coro process data */
151	int prio;
152		185
153	/* data associated with this coroutine (initial args) */	186	/* data associated with this coroutine (initial args) */
154	AV *args;	187	AV *args;
155	int refcnt;	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 */
156	};	213	};
157		214
158	typedef struct coro *Coro__State;	215	typedef struct coro *Coro__State;
159	typedef struct coro *Coro__State_or_hashref;	216	typedef struct coro *Coro__State_or_hashref;
160		217
		218	/ Coro ******************************************************************/
		219
		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
161	static AV *	235	static AV *
162	coro_clone_padlist (pTHX_ CV *cv)	236	coro_clone_padlist (pTHX_ CV *cv)
163	{	237	{
164	AV *padlist = CvPADLIST (cv);	238	AV *padlist = CvPADLIST (cv);
165	AV newpadlist, newpad;	239	AV newpadlist, newpad;
166		240
167	newpadlist = newAV ();	241	newpadlist = newAV ();
168	AvREAL_off (newpadlist);	242	AvREAL_off (newpadlist);
169	#if PERL_VERSION < 9	243	#if PERL_VERSION_ATLEAST (5,9,0)
		244	Perl_pad_push (aTHX_ padlist, AvFILLp (padlist) + 1);
		245	#else
170	Perl_pad_push (aTHX_ padlist, AvFILLp (padlist) + 1, 1);	246	Perl_pad_push (aTHX_ padlist, AvFILLp (padlist) + 1, 1);
171	#else
172	Perl_pad_push (aTHX_ padlist, AvFILLp (padlist) + 1);
173	#endif	247	#endif
174	newpad = (AV *)AvARRAY (padlist)[AvFILLp (padlist)];	248	newpad = (AV *)AvARRAY (padlist)[AvFILLp (padlist)];
175	--AvFILLp (padlist);	249	--AvFILLp (padlist);
176		250
177	av_store (newpadlist, 0, SvREFCNT_inc (*av_fetch (padlist, 0, FALSE)));	251	av_store (newpadlist, 0, SvREFCNT_inc (*av_fetch (padlist, 0, FALSE)));
…		…
221		295
222	#define PERL_MAGIC_coro PERL_MAGIC_ext	296	#define PERL_MAGIC_coro PERL_MAGIC_ext
223		297
224	static MGVTBL vtbl_coro = {0, 0, 0, 0, coro_cv_free};	298	static MGVTBL vtbl_coro = {0, 0, 0, 0, coro_cv_free};
225		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
226	/* the next two functions merely cache the padlists */	333	/* the next two functions merely cache the padlists */
227	static void	334	static void
228	get_padlist (pTHX_ CV *cv)	335	get_padlist (pTHX_ CV *cv)
229	{	336	{
230	MAGIC mg = mg_find ((SV )cv, PERL_MAGIC_coro);	337	MAGIC *mg = CORO_MAGIC (cv);
		338	AV *av;
231		339
232	if (mg && AvFILLp ((AV *)mg->mg_obj) >= 0)	340	if (mg && AvFILLp ((av = (AV *)mg->mg_obj)) >= 0)
233	CvPADLIST (cv) = (AV )av_pop ((AV )mg->mg_obj);	341	CvPADLIST (cv) = (AV *)AvARRAY (av)[AvFILLp (av)--];
234	else	342	else
235	{	343	{
236	#if 0	344	#if CORO_PREFER_PERL_FUNCTIONS
237	/* this should work - but it doesn't :( */	345	/* this is probably cleaner, but also slower? */
238	CV *cp = Perl_cv_clone (aTHX_ cv);	346	CV *cp = Perl_cv_clone (cv);
239	CvPADLIST (cv) = CvPADLIST (cp);	347	CvPADLIST (cv) = CvPADLIST (cp);
240	CvPADLIST (cp) = 0;	348	CvPADLIST (cp) = 0;
241	SvREFCNT_dec (cp);	349	SvREFCNT_dec (cp);
242	#else	350	#else
243	CvPADLIST (cv) = coro_clone_padlist (aTHX_ cv);	351	CvPADLIST (cv) = coro_clone_padlist (aTHX_ cv);
…		…
246	}	354	}
247		355
248	static void	356	static void
249	put_padlist (pTHX_ CV *cv)	357	put_padlist (pTHX_ CV *cv)
250	{	358	{
251	MAGIC mg = mg_find ((SV )cv, PERL_MAGIC_coro);	359	MAGIC *mg = CORO_MAGIC (cv);
		360	AV *av;
252		361
253	if (!mg)	362	if (!mg)
254	{	363	{
255	sv_magic ((SV *)cv, 0, PERL_MAGIC_coro, 0, 0);	364	sv_magic ((SV *)cv, 0, PERL_MAGIC_coro, 0, 0);
256	mg = mg_find ((SV *)cv, PERL_MAGIC_coro);	365	mg = mg_find ((SV *)cv, PERL_MAGIC_coro);
257	mg->mg_virtual = &vtbl_coro;	366	mg->mg_virtual = &vtbl_coro;
258	mg->mg_obj = (SV *)newAV ();	367	mg->mg_obj = (SV *)newAV ();
259	}	368	}
260		369
261	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);
262	}	376	}
		377
		378	/ load & save, init *****************************************************/
263		379
264	#define SB do {	380	#define SB do {
265	#define SE } while (0)	381	#define SE } while (0)
266		382
267	#define LOAD(state) load_state(aTHX_ (state));
268	#define SAVE(state,flags) save_state(aTHX_ (state),(flags));
269
270	#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
271		384
272	static void	385	static void
273	load_state(pTHX_ Coro__State c)	386	load_perl (pTHX_ Coro__State c)
274	{	387	{
275	PL_dowarn = c->dowarn;	388	#define VAR(name,type) PL_ ## name = c->name;
276	PL_in_eval = c->in_eval;	389	# include "state.h"
277		390	#undef VAR
278	PL_curstackinfo = c->curstackinfo;
279	PL_curstack = c->curstack;
280	PL_mainstack = c->mainstack;
281	PL_stack_sp = c->stack_sp;
282	PL_op = c->op;
283	PL_curpad = c->curpad;
284	PL_comppad = c->comppad;
285	PL_compcv = c->compcv;
286	PL_stack_base = c->stack_base;
287	PL_stack_max = c->stack_max;
288	PL_tmps_stack = c->tmps_stack;
289	PL_tmps_floor = c->tmps_floor;
290	PL_tmps_ix = c->tmps_ix;
291	PL_tmps_max = c->tmps_max;
292	PL_markstack = c->markstack;
293	PL_markstack_ptr = c->markstack_ptr;
294	PL_markstack_max = c->markstack_max;
295	PL_scopestack = c->scopestack;
296	PL_scopestack_ix = c->scopestack_ix;
297	PL_scopestack_max = c->scopestack_max;
298	PL_savestack = c->savestack;
299	PL_savestack_ix = c->savestack_ix;
300	PL_savestack_max = c->savestack_max;
301	#if PERL_VERSION < 9
302	PL_retstack = c->retstack;
303	PL_retstack_ix = c->retstack_ix;
304	PL_retstack_max = c->retstack_max;
305	#endif
306	PL_curpm = c->curpm;
307	PL_curcop = c->curcop;
308	PL_top_env = c->top_env;
309		391
310	if (c->defav) REPLACE_SV (GvAV (PL_defgv), c->defav);	392	if (c->defav) REPLACE_SV (GvAV (PL_defgv), c->defav);
311	if (c->defsv) REPLACE_SV (DEFSV , c->defsv);	393	if (c->defsv) REPLACE_SV (DEFSV , c->defsv);
312	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	}
313		411
314	{	412	{
315	dSP;	413	dSP;
316	CV *cv;	414	CV *cv;
317		415
318	/* now do the ugly restore mess */	416	/* now do the ugly restore mess */
319	while ((cv = (CV *)POPs))	417	while ((cv = (CV *)POPs))
320	{	418	{
321	AV padlist = (AV )POPs;
322
323	if (padlist)
324	{
325	put_padlist (aTHX_ cv); /* mark this padlist as available */	419	put_padlist (aTHX_ cv); /* mark this padlist as available */
326	CvPADLIST(cv) = padlist;	420	CvDEPTH (cv) = PTR2IV (POPs);
327	}	421	CvPADLIST (cv) = (AV *)POPs;
328
329	++CvDEPTH(cv);
330	}	422	}
331		423
332	PUTBACK;	424	PUTBACK;
333	}	425	}
334	}	426	}
335		427
336	static void	428	static void
337	save_state(pTHX_ Coro__State c, int flags)	429	save_perl (pTHX_ Coro__State c)
338	{	430	{
339	{	431	{
340	dSP;	432	dSP;
341	I32 cxix = cxstack_ix;	433	I32 cxix = cxstack_ix;
342	PERL_CONTEXT *ccstk = cxstack;	434	PERL_CONTEXT *ccstk = cxstack;
…		…
345	/*	437	/*
346	* 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
347	* (and reinitialize) all cv's in the whole callchain :(	439	* (and reinitialize) all cv's in the whole callchain :(
348	*/	440	*/
349		441
350	PUSHs (Nullsv);	442	XPUSHs (Nullsv);
351	/* this loop was inspired by pp_caller */	443	/* this loop was inspired by pp_caller */
352	for (;;)	444	for (;;)
353	{	445	{
354	while (cxix >= 0)	446	while (cxix >= 0)
355	{	447	{
356	PERL_CONTEXT *cx = &ccstk[cxix--];	448	PERL_CONTEXT *cx = &ccstk[cxix--];
357		449
358	if (CxTYPE(cx) == CXt_SUB)	450	if (CxTYPE (cx) == CXt_SUB \|\| CxTYPE (cx) == CXt_FORMAT)
359	{	451	{
360	CV *cv = cx->blk_sub.cv;	452	CV *cv = cx->blk_sub.cv;
		453
361	if (CvDEPTH(cv))	454	if (CvDEPTH (cv))
362	{	455	{
363	EXTEND (SP, CvDEPTH(cv)*2);	456	EXTEND (SP, 3);
364
365	while (--CvDEPTH(cv))
366	{
367	/* this tells the restore code to increment CvDEPTH */
368	PUSHs (Nullsv);
369	PUSHs ((SV *)cv);
370	}
371
372	PUSHs ((SV *)CvPADLIST(cv));	457	PUSHs ((SV *)CvPADLIST (cv));
		458	PUSHs (INT2PTR (SV *, CvDEPTH (cv)));
373	PUSHs ((SV *)cv);	459	PUSHs ((SV *)cv);
374		460
		461	CvDEPTH (cv) = 0;
375	get_padlist (aTHX_ cv);	462	get_padlist (aTHX_ cv);
376	}	463	}
377	}	464	}
378	#ifdef CXt_FORMAT
379	else if (CxTYPE(cx) == CXt_FORMAT)
380	{
381	/* I never used formats, so how should I know how these are implemented? */
382	/* my bold guess is as a simple, plain sub... */
383	croak ("CXt_FORMAT not yet handled. Don't switch coroutines from within formats");
384	}
385	#endif
386	}	465	}
387		466
388	if (top_si->si_type == PERLSI_MAIN)	467	if (top_si->si_type == PERLSI_MAIN)
389	break;	468	break;
390		469
391	top_si = top_si->si_prev;	470	top_si = top_si->si_prev;
392	ccstk = top_si->si_cxstack;	471	ccstk = top_si->si_cxstack;
393	cxix = top_si->si_cxix;	472	cxix = top_si->si_cxix;
394	}	473	}
395		474
396	PUTBACK;	475	PUTBACK;
397	}	476	}
398		477
399	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;
400	c->defsv = flags & TRANSFER_SAVE_DEFSV ? SvREFCNT_inc (DEFSV) : 0;	479	c->defsv = c->save & CORO_SAVE_DEFSV ? SvREFCNT_inc (DEFSV) : 0;
401	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;
402		483
403	c->dowarn = PL_dowarn;	484	#define VAR(name,type)c->name = PL_ ## name;
404	c->in_eval = PL_in_eval;	485	# include "state.h"
405		486	#undef VAR
406	c->curstackinfo = PL_curstackinfo;
407	c->curstack = PL_curstack;
408	c->mainstack = PL_mainstack;
409	c->stack_sp = PL_stack_sp;
410	c->op = PL_op;
411	c->curpad = PL_curpad;
412	c->comppad = PL_comppad;
413	c->compcv = PL_compcv;
414	c->stack_base = PL_stack_base;
415	c->stack_max = PL_stack_max;
416	c->tmps_stack = PL_tmps_stack;
417	c->tmps_floor = PL_tmps_floor;
418	c->tmps_ix = PL_tmps_ix;
419	c->tmps_max = PL_tmps_max;
420	c->markstack = PL_markstack;
421	c->markstack_ptr = PL_markstack_ptr;
422	c->markstack_max = PL_markstack_max;
423	c->scopestack = PL_scopestack;
424	c->scopestack_ix = PL_scopestack_ix;
425	c->scopestack_max = PL_scopestack_max;
426	c->savestack = PL_savestack;
427	c->savestack_ix = PL_savestack_ix;
428	c->savestack_max = PL_savestack_max;
429	#if PERL_VERSION < 9
430	c->retstack = PL_retstack;
431	c->retstack_ix = PL_retstack_ix;
432	c->retstack_max = PL_retstack_max;
433	#endif
434	c->curpm = PL_curpm;
435	c->curcop = PL_curcop;
436	c->top_env = PL_top_env;
437	}	487	}
438		488
439	/*	489	/*
440	* allocate various perl stacks. This is an exact copy	490	* allocate various perl stacks. This is an exact copy
441	* of perl.c:init_stacks, except that it uses less memory	491	* of perl.c:init_stacks, except that it uses less memory
442	* on the (sometimes correct) assumption that coroutines do	492	* on the (sometimes correct) assumption that coroutines do
443	* not usually need a lot of stackspace.	493	* not usually need a lot of stackspace.
444	*/	494	*/
		495	#if CORO_PREFER_PERL_FUNCTIONS
		496	# define coro_init_stacks init_stacks
		497	#else
445	static void	498	static void
446	coro_init_stacks (pTHX)	499	coro_init_stacks (pTHX)
447	{	500	{
448	LOCK;	501	PL_curstackinfo = new_stackinfo(64, 6);
449
450	PL_curstackinfo = new_stackinfo(96, 1024/sizeof(PERL_CONTEXT) - 1);
451	PL_curstackinfo->si_type = PERLSI_MAIN;	502	PL_curstackinfo->si_type = PERLSI_MAIN;
452	PL_curstack = PL_curstackinfo->si_stack;	503	PL_curstack = PL_curstackinfo->si_stack;
453	PL_mainstack = PL_curstack; /* remember in case we switch stacks */	504	PL_mainstack = PL_curstack; /* remember in case we switch stacks */
454		505
455	PL_stack_base = AvARRAY(PL_curstack);	506	PL_stack_base = AvARRAY(PL_curstack);
456	PL_stack_sp = PL_stack_base;	507	PL_stack_sp = PL_stack_base;
457	PL_stack_max = PL_stack_base + AvMAX(PL_curstack);	508	PL_stack_max = PL_stack_base + AvMAX(PL_curstack);
458		509
459	New(50,PL_tmps_stack,96,SV*);	510	New(50,PL_tmps_stack,64,SV*);
460	PL_tmps_floor = -1;	511	PL_tmps_floor = -1;
461	PL_tmps_ix = -1;	512	PL_tmps_ix = -1;
462	PL_tmps_max = 96;	513	PL_tmps_max = 64;
463		514
464	New(54,PL_markstack,16,I32);	515	New(54,PL_markstack,16,I32);
465	PL_markstack_ptr = PL_markstack;	516	PL_markstack_ptr = PL_markstack;
466	PL_markstack_max = PL_markstack + 16;	517	PL_markstack_max = PL_markstack + 16;
467		518
…		…
471		522
472	New(54,PL_scopestack,16,I32);	523	New(54,PL_scopestack,16,I32);
473	PL_scopestack_ix = 0;	524	PL_scopestack_ix = 0;
474	PL_scopestack_max = 16;	525	PL_scopestack_max = 16;
475		526
476	New(54,PL_savestack,96,ANY);	527	New(54,PL_savestack,64,ANY);
477	PL_savestack_ix = 0;	528	PL_savestack_ix = 0;
478	PL_savestack_max = 96;	529	PL_savestack_max = 64;
479		530
480	#if PERL_VERSION < 9	531	#if !PERL_VERSION_ATLEAST (5,9,0)
481	New(54,PL_retstack,8,OP*);	532	New(54,PL_retstack,4,OP*);
482	PL_retstack_ix = 0;	533	PL_retstack_ix = 0;
483	PL_retstack_max = 8;	534	PL_retstack_max = 4;
484	#endif	535	#endif
485
486	UNLOCK;
487	}	536	}
		537	#endif
488		538
489	/*	539	/*
490	* destroy the stacks, the callchain etc...	540	* destroy the stacks, the callchain etc...
491	*/	541	*/
492	static void	542	static void
493	destroy_stacks(pTHX)	543	coro_destroy_stacks (pTHX)
494	{	544	{
495	if (!IN_DESTRUCT)	545	if (!IN_DESTRUCT)
496	{	546	{
497	/* is this ugly, I ask? */	547	/* restore all saved variables and stuff */
498	LEAVE_SCOPE (0);	548	LEAVE_SCOPE (0);
		549	assert (PL_tmps_floor == -1);
499		550
500	/* sure it is, but more important: is it correct?? :/ */	551	/* free all temporaries */
501	FREETMPS;	552	FREETMPS;
		553	assert (PL_tmps_ix == -1);
502		554
		555	/* unwind all extra stacks */
503	/POPSTACK_TO (PL_mainstack);//D//use/	556	POPSTACK_TO (PL_mainstack);
		557
		558	/* unwind main stack */
		559	dounwind (-1);
504	}	560	}
505		561
506	while (PL_curstackinfo->si_next)	562	while (PL_curstackinfo->si_next)
507	PL_curstackinfo = PL_curstackinfo->si_next;	563	PL_curstackinfo = PL_curstackinfo->si_next;
508		564
509	while (PL_curstackinfo)	565	while (PL_curstackinfo)
510	{	566	{
511	PERL_SI *p = PL_curstackinfo->si_prev;	567	PERL_SI *p = PL_curstackinfo->si_prev;
512		568
513	{ /D//remove/
514	dSP;
515	SWITCHSTACK (PL_curstack, PL_curstackinfo->si_stack);
516	PUTBACK; /* possibly superfluous */
517	}
518
519	if (!IN_DESTRUCT)	569	if (!IN_DESTRUCT)
520	{
521	dounwind (-1);/D//remove/
522	SvREFCNT_dec (PL_curstackinfo->si_stack);	570	SvREFCNT_dec (PL_curstackinfo->si_stack);
523	}
524		571
525	Safefree (PL_curstackinfo->si_cxstack);	572	Safefree (PL_curstackinfo->si_cxstack);
526	Safefree (PL_curstackinfo);	573	Safefree (PL_curstackinfo);
527	PL_curstackinfo = p;	574	PL_curstackinfo = p;
528	}	575	}
529		576
530	Safefree (PL_tmps_stack);	577	Safefree (PL_tmps_stack);
531	Safefree (PL_markstack);	578	Safefree (PL_markstack);
532	Safefree (PL_scopestack);	579	Safefree (PL_scopestack);
533	Safefree (PL_savestack);	580	Safefree (PL_savestack);
534	#if PERL_VERSION < 9	581	#if !PERL_VERSION_ATLEAST (5,9,0)
535	Safefree (PL_retstack);	582	Safefree (PL_retstack);
536	#endif	583	#endif
537	}	584	}
538		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
539	static void	619	static void
540	allocate_stack (Coro__State ctx, int alloc)	620	setup_coro (pTHX_ struct coro *coro)
541	{
542	coro_stack *stack;
543
544	New (0, stack, 1, coro_stack);
545
546	stack->refcnt = 1;
547	stack->usecnt = 1;
548	stack->gencnt = ctx->gencnt = 0;
549
550	if (alloc)
551	{
552	#if HAVE_MMAP
553	stack->ssize = ((STACKSIZE * sizeof (long) + PAGESIZE - 1) / PAGESIZE + STACKGUARD) * PAGESIZE; /* mmap should do allocate-on-write for us */
554	stack->sptr = mmap (0, stack->ssize, PROT_EXEC\|PROT_READ\|PROT_WRITE, MAP_PRIVATE\|MAP_ANONYMOUS, 0, 0);
555	if (stack->sptr != (void *)-1)
556	{
557	# if STACKGUARD
558	mprotect (stack->sptr, STACKGUARD * PAGESIZE, PROT_NONE);
559	# endif
560	}
561	else
562	#endif
563	{
564	stack->ssize = - (STACKSIZE * (long)sizeof (long));
565	New (0, stack->sptr, STACKSIZE, long);
566	}
567	}
568	else
569	stack->sptr = 0;
570
571	ctx->stack = stack;
572	}
573
574	static void
575	deallocate_stack (Coro__State ctx)
576	{
577	coro_stack *stack = ctx->stack;
578
579	ctx->stack = 0;
580
581	if (stack)
582	{
583	if (!--stack->refcnt)
584	{
585	#ifdef HAVE_MMAP
586	if (stack->ssize > 0 && stack->sptr)
587	munmap (stack->sptr, stack->ssize);
588	else
589	#endif
590	Safefree (stack->sptr);
591
592	Safefree (stack);
593	}
594	else if (ctx->gencnt == stack->gencnt)
595	--stack->usecnt;
596	}
597	}
598
599	static void
600	setup_coro (void *arg)
601	{	621	{
602	/*	622	/*
603	* emulate part of the perl startup here.	623	* emulate part of the perl startup here.
604	*/	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	{
605	dTHX;	814	dTHX;
606	dSP;
607	Coro__State ctx = (Coro__State)arg;
608	SV sub_init = (SV )get_cv (SUB_INIT, FALSE);
609		815
610	coro_init_stacks (aTHX);	816	/* coro_run is the alternative tail of transfer(), so unlock here. */
611	/PL_curcop = 0;/	817	UNLOCK;
612	/PL_in_eval = PL_in_eval;/ /* inherit */
613	SvREFCNT_dec (GvAV (PL_defgv));
614	GvAV (PL_defgv) = ctx->args; ctx->args = 0;
615		818
616	SPAGAIN;	819	/* we now skip the entersub that lead to transfer() */
		820	PL_op = PL_op->op_next;
617		821
618	if (ctx->stack)	822	/* inject a fake subroutine call to cctx_init */
619	{	823	prepare_cctx (aTHX_ (coro_cctx *)arg);
620	ctx->cursp = 0;
621		824
622	PUSHMARK(SP);	825	/* somebody or something will hit me for both perl_run and PL_restartop */
623	PUTBACK;	826	PL_restartop = PL_op;
624	(void) call_sv (sub_init, G_VOID\|G_NOARGS\|G_EVAL);	827	perl_run (PL_curinterp);
625		828
626	if (SvTRUE (ERRSV))	829	/*
627	croak (NULL);	830	* If perl-run returns we assume exit() was being called or the coro
628	else	831	* fell off the end, which seems to be the only valid (non-bug)
629	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;
630	}	865	}
631	else	866	else
632	{	867	#endif
633	UNOP myop;
634
635	Zero(&myop, 1, UNOP);
636	myop.op_next = Nullop;
637	myop.op_flags = OPf_WANT_VOID;
638
639	PL_op = (OP *)&myop;
640
641	PUSHMARK(SP);
642	XPUSHs (sub_init);
643	/*
644	* the next line is slightly wrong, as PL_op->op_next
645	* is actually being executed so we skip the first op.
646	* that doesn't matter, though, since it is only
647	* pp_nextstate and we never return...
648	* ah yes, and I don't care anyways ;)
649	*/
650	PUTBACK;
651	PL_op = PL_ppaddr[OP_ENTERSUB](aTHX);
652	SPAGAIN;
653
654	ENTER; /* necessary e.g. for dounwind */
655	}	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;
656	}	886	}
657		887
658	static void	888	static void
659	continue_coro (void *arg)	889	cctx_destroy (coro_cctx *cctx)
660	{	890	{
661	/*	891	if (!cctx)
662	* this is a _very_ stripped down perl interpreter ;)	892	return;
663	*/
664	dTHX;
665	Coro__State ctx = (Coro__State)arg;
666		893
667	PL_top_env = &PL_start_env;	894	--cctx_count;
668		895
669	ctx->cursp = 0;	896	#if CORO_USE_VALGRIND
670	PL_op = PL_op->op_next;	897	VALGRIND_STACK_DEREGISTER (cctx->valgrind_id);
671	CALLRUNOPS(aTHX);	898	#endif
672		899
673	abort ();	900	#if HAVE_MMAP
674	}	901	if (cctx->flags & CC_MAPPED)
		902	munmap (cctx->sptr, cctx->ssize);
		903	else
		904	#endif
		905	Safefree (cctx->sptr);
675		906
676	/* never call directly, always through the coro_state_transfer global variable */	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
677	static void	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
678	transfer_impl (pTHX_ struct coro prev, struct coro next, int flags)	969	transfer (pTHX_ struct coro prev, struct coro next)
679	{	970	{
680	dSTACKLEVEL;	971	dSTACKLEVEL;
681		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	}
682	if (prev != next)	979	else if (prev != next)
683	{	980	{
684	/* has this coro been created yet? */	981	coro_cctx *prev__cctx;
685	if (next->mainstack)	982
		983	if (prev->flags & CF_NEW)
686	{	984	{
687	LOCK;	985	/* create a new empty context */
688	SAVE (prev, flags);	986	Newz (0, prev->cctx, 1, coro_cctx);
689	LOAD (next);	987	prev->flags &= ~CF_NEW;
690	UNLOCK;	988	prev->flags \|= CF_RUNNING;
691
692	/* mark this state as in-use */
693	next->mainstack = 0;
694	next->tmps_ix = -2;
695
696	/* stacklevel changed? if yes, grab the stack for us! */
697	if (flags & TRANSFER_SAVE_CCTXT)
698	{
699	if (!prev->stack)
700	allocate_stack (prev, 0);
701	else if (prev->cursp != stacklevel
702	&& prev->stack->usecnt > 1)
703	{
704	prev->gencnt = ++prev->stack->gencnt;
705	prev->stack->usecnt = 1;
706	}
707
708	/* has our stack been invalidated? */
709	if (next->stack && next->stack->gencnt != next->gencnt)
710	{
711	deallocate_stack (next);
712	allocate_stack (next, 1);
713	coro_create (&(next->stack->cctx),
714	continue_coro, (void *)next,
715	next->stack->sptr, labs (next->stack->ssize));
716	}
717
718	coro_transfer (&(prev->stack->cctx), &(next->stack->cctx));
719	prev->cursp = stacklevel;
720	/* don't add any code here */
721	}
722	else
723	next->cursp = stacklevel;
724	}	989	}
725	else if (next->tmps_ix == -2)	990
726	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	}
727	else	1005	else
728	{	1006	{
729	LOCK;	1007	/* coroutine already started */
730	SAVE (prev, -1); /* first get rid of the old state */	1008	save_perl (aTHX_ prev);
731	UNLOCK;	1009	load_perl (aTHX_ next);
732
733	/* create the coroutine for the first time */
734	if (flags & TRANSFER_SAVE_CCTXT)
735	{
736	if (!prev->stack)
737	allocate_stack (prev, 0);
738
739	/* the new coroutine starts with start_env again */
740	PL_top_env = &PL_start_env;
741
742	if (prev->stack->sptr && flags & TRANSFER_LAZY_STACK)
743	{
744	setup_coro (next);
745	next->cursp = stacklevel;
746
747	prev->stack->refcnt++;
748	prev->stack->usecnt++;
749	next->stack = prev->stack;
750	next->gencnt = prev->gencnt;
751	}
752	else
753	{
754	assert (!next->stack);
755	allocate_stack (next, 1);
756	coro_create (&(next->stack->cctx),
757	setup_coro, (void *)next,
758	next->stack->sptr, labs (next->stack->ssize));
759	coro_transfer (&(prev->stack->cctx), &(next->stack->cctx));
760	prev->cursp = stacklevel;
761	/* don't add any code here */
762	}
763	}
764	else
765	{
766	setup_coro (next);
767	next->cursp = stacklevel;
768	}
769	}	1010	}
770	}
771		1011
772	LOCK;	1012	prev__cctx = prev->cctx;
773	if (coro_mortal)	1013
774	{	1014	/* possibly "free" the cctx */
775	SvREFCNT_dec (coro_mortal);	1015	if (prev__cctx->idle_sp == STACKLEVEL && !(prev__cctx->flags & CC_TRACE))
776	coro_mortal = 0;	1016	{
777	}	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);
778	UNLOCK;	1038	UNLOCK;
		1039	}
779	}	1040	}
780		1041
781	/* use this function pointer to call the above function */	1042	struct transfer_args
782	/* this is done to increase chances of the compiler not inlining the call */	1043	{
783	void (coro_state_transfer)(pTHX_ struct coro prev, struct coro *next, int flags) = transfer_impl;	1044	struct coro prev, next;
		1045	};
784		1046
785	#define SV_CORO(sv,func) \	1047	#define TRANSFER(ta) transfer (aTHX_ (ta).prev, (ta).next)
786	do { \	1048	#define TRANSFER_CHECK(ta) transfer_check (aTHX_ (ta).prev, (ta).next)
787	if (SvROK (sv)) \
788	sv = SvRV (sv); \
789	\
790	if (SvTYPE (sv) == SVt_PVHV && SvSTASH (sv) != coro_state_stash) \
791	{ \
792	HE he = hv_fetch_ent ((HV )sv, ucoro_state_sv, 0, ucoro_state_hash); \
793	\
794	if (!he) \
795	croak ("%s() -- %s is a hashref but lacks the " UCORO_STATE " key", func, # sv); \
796	\
797	(sv) = SvRV (HeVAL(he)); \
798	} \
799	\
800	/* must also be changed inside Coro::Cont::yield */ \
801	if (!SvOBJECT (sv) \|\| SvSTASH (sv) != coro_state_stash) \
802	croak ("%s() -- %s is not (and contains not) a Coro::State object", func, # sv); \
803	\
804	} while(0)
805		1049
		1050	/ high level stuff ******************************************************/
		1051
806	static void	1052	static int
807	coro_state_destroy (struct coro *coro)	1053	coro_state_destroy (pTHX_ struct coro *coro)
808	{	1054	{
809	if (coro->refcnt--)	1055	if (coro->flags & CF_DESTROYED)
810	return;	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 */
811		1070
812	if (coro->mainstack && coro->mainstack != main_mainstack)	1071	if (coro->mainstack && coro->mainstack != main_mainstack)
813	{	1072	{
814	struct coro temp;	1073	struct coro temp;
815		1074
816	SAVE (aTHX_ (&temp), TRANSFER_SAVE_ALL);	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);
817	LOAD (aTHX_ coro);	1084	load_perl (aTHX_ coro);
818		1085
819	destroy_stacks (aTHX);	1086	coro_destroy_stacks (aTHX);
820		1087
821	LOAD ((&temp)); /* this will get rid of defsv etc.. */	1088	load_perl (aTHX_ &temp); /* this will get rid of defsv etc.. */
822		1089
823	coro->mainstack = 0;	1090	coro->mainstack = 0;
824	}	1091	}
825		1092
826	deallocate_stack (coro);	1093	cctx_destroy (coro->cctx);
827	SvREFCNT_dec (coro->args);	1094	SvREFCNT_dec (coro->args);
828	Safefree (coro);	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;
829	}	1101	}
830		1102
831	static int	1103	static int
832	coro_state_clear (SV sv, MAGIC mg)	1104	coro_state_free (pTHX_ SV sv, MAGIC mg)
833	{	1105	{
834	struct coro coro = (struct coro )mg->mg_ptr;	1106	struct coro coro = (struct coro )mg->mg_ptr;
835	mg->mg_ptr = 0;	1107	mg->mg_ptr = 0;
836		1108
		1109	coro->hv = 0;
		1110
		1111	if (--coro->refcnt < 0)
		1112	{
837	coro_state_destroy (coro);	1113	coro_state_destroy (aTHX_ coro);
		1114	Safefree (coro);
		1115	}
838		1116
839	return 0;	1117	return 0;
840	}	1118	}
841		1119
842	static int	1120	static int
843	coro_state_dup (MAGIC mg, CLONE_PARAMS params)	1121	coro_state_dup (pTHX_ MAGIC mg, CLONE_PARAMS params)
844	{	1122	{
845	struct coro coro = (struct coro )mg->mg_ptr;	1123	struct coro coro = (struct coro )mg->mg_ptr;
846		1124
847	++coro->refcnt;	1125	++coro->refcnt;
848		1126
849	return 0;	1127	return 0;
850	}	1128	}
851		1129
852	static MGVTBL coro_state_vtbl = { 0, 0, 0, 0, coro_state_clear, 0, coro_state_dup, 0 };	1130	static MGVTBL coro_state_vtbl = {
853		1131	0, 0, 0, 0,
854	static struct coro *	1132	coro_state_free,
855	SvSTATE (SV *coro)	1133	0,
856	{	1134	#ifdef MGf_DUP
857	MAGIC *mg = SvMAGIC (SvROK (coro) ? SvRV (coro) : coro);	1135	coro_state_dup,
858	assert (mg->mg_type == PERL_MAGIC_ext);	1136	#else
859	return (struct coro *)mg->mg_ptr;	1137	# define MGf_DUP 0
860	}	1138	#endif
		1139	};
861		1140
862	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
863	api_transfer (pTHX_ SV prev, SV next, int flags)	1150	api_transfer (SV prev_sv, SV next_sv)
864	{	1151	{
865	SV_CORO (prev, "Coro::transfer");	1152	dTHX;
866	SV_CORO (next, "Coro::transfer");	1153	struct transfer_args ta;
867		1154
868	coro_state_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;
869	}	1170	}
870		1171
871	/ Coro ******************************************************************/	1172	/ Coro ******************************************************************/
872		1173
873	#define PRIO_MAX 3
874	#define PRIO_HIGH 1
875	#define PRIO_NORMAL 0
876	#define PRIO_LOW -1
877	#define PRIO_IDLE -3
878	#define PRIO_MIN -4
879
880	/* for Coro.pm */
881	static GV coro_current, coro_idle;
882	static AV *coro_ready [PRIO_MAX-PRIO_MIN+1];
883	static int coro_nready;
884
885	static void	1174	static void
886	coro_enq (pTHX_ SV *sv)	1175	coro_enq (pTHX_ SV *coro_sv)
887	{	1176	{
888	int prio;
889
890	if (SvTYPE (sv) != SVt_PVHV)
891	croak ("Coro::ready tried to enqueue something that is not a coroutine");
892
893	{
894	SV *coro = sv;
895	SV_CORO (coro, "omg");
896	prio = SvSTATE (coro)->prio;
897	}
898
899	av_push (coro_ready [prio - PRIO_MIN], sv);	1177	av_push (coro_ready [SvSTATE (coro_sv)->prio - PRIO_MIN], coro_sv);
900	coro_nready++;
901	}	1178	}
902		1179
903	static SV *	1180	static SV *
904	coro_deq (pTHX_ int min_prio)	1181	coro_deq (pTHX_ int min_prio)
905	{	1182	{
…		…
909	if (min_prio < 0)	1186	if (min_prio < 0)
910	min_prio = 0;	1187	min_prio = 0;
911		1188
912	for (prio = PRIO_MAX - PRIO_MIN + 1; --prio >= min_prio; )	1189	for (prio = PRIO_MAX - PRIO_MIN + 1; --prio >= min_prio; )
913	if (AvFILLp (coro_ready [prio]) >= 0)	1190	if (AvFILLp (coro_ready [prio]) >= 0)
914	{
915	coro_nready--;
916	return av_shift (coro_ready [prio]);	1191	return av_shift (coro_ready [prio]);
917	}
918		1192
919	return 0;	1193	return 0;
920	}	1194	}
921		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
922	static void	1227	static void
923	api_ready (SV *coro)	1228	prepare_schedule (pTHX_ struct transfer_args *ta)
924	{	1229	{
925	dTHX;	1230	SV prev_sv, next_sv;
926		1231
927	if (SvROK (coro))	1232	for (;;)
928	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);
929		1278
930	LOCK;	1279	LOCK;
931	coro_enq (aTHX_ SvREFCNT_inc (coro));	1280	free_coro_mortal (aTHX);
		1281	coro_mortal = prev_sv;
932	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;
933	}	1304	}
934		1305
935	static void	1306	static void
936	api_schedule (void)	1307	api_schedule (void)
937	{	1308	{
938	dTHX;	1309	dTHX;
		1310	struct transfer_args ta;
939		1311
940	SV prev, next;	1312	prepare_schedule (aTHX_ &ta);
941		1313	TRANSFER (ta);
942	LOCK;
943
944	prev = SvRV (GvSV (coro_current));
945	next = coro_deq (aTHX_ PRIO_MIN);
946
947	if (!next)
948	next = SvREFCNT_inc (SvRV (GvSV (coro_idle)));
949
950	/* free this only after the transfer */
951	coro_mortal = prev;
952	SV_CORO (prev, "Coro::schedule");
953
954	SvRV (GvSV (coro_current)) = next;
955
956	SV_CORO (next, "Coro::schedule");
957
958	UNLOCK;
959
960	coro_state_transfer (aTHX_ SvSTATE (prev), SvSTATE (next),
961	TRANSFER_SAVE_ALL \| TRANSFER_LAZY_STACK);
962	}	1314	}
963		1315
964	static void	1316	static int
965	api_cede (void)	1317	api_cede (void)
966	{	1318	{
967	dTHX;	1319	dTHX;
		1320	struct transfer_args ta;
968		1321
969	LOCK;	1322	prepare_cede (aTHX_ &ta);
970	coro_enq (aTHX_ SvREFCNT_inc (SvRV (GvSV (coro_current))));
971	UNLOCK;
972		1323
973	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;
974	}	1346	}
975		1347
976	MODULE = Coro::State PACKAGE = Coro::State	1348	MODULE = Coro::State PACKAGE = Coro::State
977		1349
978	PROTOTYPES: DISABLE	1350	PROTOTYPES: DISABLE
979		1351
980	BOOT:	1352	BOOT:
981	{ /* {} necessary for stoopid perl-5.6.x */	1353	{
982	#ifdef USE_ITHREADS	1354	#ifdef USE_ITHREADS
983	MUTEX_INIT (&coro_mutex);	1355	MUTEX_INIT (&coro_mutex);
984	#endif	1356	#endif
985	BOOT_PAGESIZE;	1357	BOOT_PAGESIZE;
986		1358
987	ucoro_state_sv = newSVpv (UCORO_STATE, sizeof(UCORO_STATE) - 1);
988	PERL_HASH(ucoro_state_hash, UCORO_STATE, sizeof(UCORO_STATE) - 1);
989	coro_state_stash = gv_stashpv ("Coro::State", TRUE);	1359	coro_state_stash = gv_stashpv ("Coro::State", TRUE);
990		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
991	newCONSTSUB (coro_state_stash, "SAVE_DEFAV", newSViv (TRANSFER_SAVE_DEFAV));	1366	newCONSTSUB (coro_state_stash, "SAVE_DEFAV", newSViv (CORO_SAVE_DEFAV));
992	newCONSTSUB (coro_state_stash, "SAVE_DEFSV", newSViv (TRANSFER_SAVE_DEFSV));	1367	newCONSTSUB (coro_state_stash, "SAVE_DEFSV", newSViv (CORO_SAVE_DEFSV));
993	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));
994	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));
995		1373
996	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;
997		1379
998	coroapi.ver = CORO_API_VERSION;	1380	coroapi.ver = CORO_API_VERSION;
999	coroapi.transfer = api_transfer;	1381	coroapi.transfer = api_transfer;
1000		1382
1001	assert (("PRIO_NORMAL must be 0", !PRIO_NORMAL));	1383	assert (("PRIO_NORMAL must be 0", !PRIO_NORMAL));
…		…
1009	HV *hv;	1391	HV *hv;
1010	int i;	1392	int i;
1011		1393
1012	Newz (0, coro, 1, struct coro);	1394	Newz (0, coro, 1, struct coro);
1013	coro->args = newAV ();	1395	coro->args = newAV ();
		1396	coro->save = CORO_SAVE_DEF;
		1397	coro->flags = CF_NEW;
		1398
		1399	if (coro_first) coro_first->prev = coro;
		1400	coro->next = coro_first;
		1401	coro_first = coro;
		1402
		1403	coro->hv = hv = newHV ();
		1404	sv_magicext ((SV )hv, 0, PERL_MAGIC_ext, &coro_state_vtbl, (char )coro, 0)->mg_flags \|= MGf_DUP;
		1405	RETVAL = sv_bless (newRV_noinc ((SV *)hv), gv_stashpv (klass, 1));
1014		1406
1015	for (i = 1; i < items; i++)	1407	for (i = 1; i < items; i++)
1016	av_push (coro->args, newSVsv (ST (i)));	1408	av_push (coro->args, newSVsv (ST (i)));
1017
1018	/coro->mainstack = 0; //actual work is done inside transfer /
1019	/coro->stack = 0;/
1020
1021	hv = newHV ();
1022	sv_magicext ((SV )hv, 0, PERL_MAGIC_ext, &coro_state_vtbl, (char )coro, 0)->mg_flags \|= MGf_DUP;
1023	RETVAL = sv_bless (newRV_noinc ((SV *)hv), gv_stashpv (klass, 1));
1024	}	1409	}
1025	OUTPUT:	1410	OUTPUT:
1026	RETVAL	1411	RETVAL
1027		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
1028	void	1431	void
1029	transfer(prev, next, flags)	1432	_set_stacklevel (...)
1030	SV *prev	1433	ALIAS:
1031	SV *next	1434	Coro::State::transfer = 1
1032	int flags	1435	Coro::schedule = 2
		1436	Coro::cede = 3
		1437	Coro::cede_notself = 4
1033	CODE:	1438	CODE:
1034	PUTBACK;
1035	SV_CORO (next, "Coro::transfer");
1036	SV_CORO (prev, "Coro::transfer");
1037	coro_state_transfer (aTHX_ SvSTATE (prev), SvSTATE (next), flags);
1038	SPAGAIN;
1039
1040	int
1041	prio (Coro::State coro, int newprio = 0)
1042	ALIAS:
1043	nice = 1
1044	CODE:
1045	{	1439	{
1046	RETVAL = coro->prio;	1440	struct transfer_args ta;
1047		1441
1048	if (items > 1)	1442	switch (ix)
1049	{	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:
1050	if (ix)	1450	if (items != 2)
1051	newprio += coro->prio;	1451	croak ("Coro::State::transfer (prev,next) expects two arguments, not %d", items);
1052		1452
1053	if (newprio < PRIO_MIN) newprio = PRIO_MIN;	1453	prepare_transfer (aTHX_ &ta, ST (0), ST (1));
1054	if (newprio > PRIO_MAX) newprio = PRIO_MAX;	1454	break;
1055		1455
1056	coro->prio = newprio;	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;
1057	}	1469	}
1058	}
1059		1470
1060	void	1471	BARRIER;
1061	_clone_state_from (SV dst, SV src)	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)
1062	CODE:	1480	CODE:
1063	{	1481	RETVAL = coro_state_destroy (aTHX_ SvSTATE (coro_sv));
1064	struct coro *coro_src = SvSTATE (src);	1482	OUTPUT:
1065		1483	RETVAL
1066	sv_unmagic (SvRV (dst), PERL_MAGIC_ext);
1067
1068	++coro_src->refcnt;
1069	sv_magicext (SvRV (dst), 0, PERL_MAGIC_ext, &coro_state_vtbl, (char *)coro_src, 0)->mg_flags \|= MGf_DUP;
1070	}
1071		1484
1072	void	1485	void
1073	_exit (code)	1486	_exit (code)
1074	int code	1487	int code
1075	PROTOTYPE: $	1488	PROTOTYPE: $
1076	CODE:	1489	CODE:
1077	_exit (code);	1490	_exit (code);
1078		1491
1079	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
		1500
		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
1080		1514
1081	void	1515	void
1082	yield (...)	1516	list ()
1083	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
1084	CODE:	1625	CODE:
1085	SV *yieldstack;	1626	switch (ix)
1086	SV *sv;	1627	{
1087	AV *defav = GvAV (PL_defgv);	1628	case 0: RETVAL = coro_rss (aTHX_ coro); break;
1088	struct coro prev, next;	1629	case 1: RETVAL = coro->usecount; break;
1089
1090	yieldstack = *hv_fetch (
1091	(HV *)SvRV (GvSV (coro_current)),
1092	"yieldstack", sizeof ("yieldstack") - 1,
1093	0	1630	}
1094	);	1631	OUTPUT:
		1632	RETVAL
1095		1633
1096	/* set up @_ -- ugly */
1097	av_clear (defav);
1098	av_fill (defav, items - 1);
1099	while (items--)
1100	av_store (defav, items, SvREFCNT_inc (ST(items)));
1101
1102	sv = av_pop ((AV *)SvRV (yieldstack));
1103	prev = SvSTATE ((SV)SvRV (av_fetch ((AV *)SvRV (sv), 0, 0)));
1104	next = SvSTATE ((SV)SvRV (av_fetch ((AV *)SvRV (sv), 1, 0)));
1105	SvREFCNT_dec (sv);
1106
1107	coro_state_transfer (aTHX_ prev, next, 0);
1108		1634
1109	MODULE = Coro::State PACKAGE = Coro	1635	MODULE = Coro::State PACKAGE = Coro
1110		1636
1111	BOOT:	1637	BOOT:
1112	{	1638	{
1113	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
1114	HV *stash = gv_stashpv ("Coro", TRUE);	1648	coro_stash = gv_stashpv ("Coro", TRUE);
1115		1649
1116	newCONSTSUB (stash, "PRIO_MAX", newSViv (PRIO_MAX));	1650	newCONSTSUB (coro_stash, "PRIO_MAX", newSViv (PRIO_MAX));
1117	newCONSTSUB (stash, "PRIO_HIGH", newSViv (PRIO_HIGH));	1651	newCONSTSUB (coro_stash, "PRIO_HIGH", newSViv (PRIO_HIGH));
1118	newCONSTSUB (stash, "PRIO_NORMAL", newSViv (PRIO_NORMAL));	1652	newCONSTSUB (coro_stash, "PRIO_NORMAL", newSViv (PRIO_NORMAL));
1119	newCONSTSUB (stash, "PRIO_LOW", newSViv (PRIO_LOW));	1653	newCONSTSUB (coro_stash, "PRIO_LOW", newSViv (PRIO_LOW));
1120	newCONSTSUB (stash, "PRIO_IDLE", newSViv (PRIO_IDLE));	1654	newCONSTSUB (coro_stash, "PRIO_IDLE", newSViv (PRIO_IDLE));
1121	newCONSTSUB (stash, "PRIO_MIN", newSViv (PRIO_MIN));	1655	newCONSTSUB (coro_stash, "PRIO_MIN", newSViv (PRIO_MIN));
1122
1123	coro_current = gv_fetchpv ("Coro::current", TRUE, SVt_PV);
1124	coro_idle = gv_fetchpv ("Coro::idle" , TRUE, SVt_PV);
1125		1656
1126	for (i = PRIO_MAX - PRIO_MIN + 1; i--; )	1657	for (i = PRIO_MAX - PRIO_MIN + 1; i--; )
1127	coro_ready[i] = newAV ();	1658	coro_ready[i] = newAV ();
1128		1659
1129	{	1660	{
1130	SV *sv = perl_get_sv("Coro::API", 1);	1661	SV *sv = perl_get_sv("Coro::API", 1);
1131		1662
1132	coroapi.schedule = api_schedule;	1663	coroapi.schedule = api_schedule;
		1664	coroapi.save = api_save;
1133	coroapi.cede = api_cede;	1665	coroapi.cede = api_cede;
		1666	coroapi.cede_notself = api_cede_notself;
1134	coroapi.ready = api_ready;	1667	coroapi.ready = api_ready;
		1668	coroapi.is_ready = api_is_ready;
1135	coroapi.nready = &coro_nready;	1669	coroapi.nready = &coro_nready;
1136	coroapi.current = coro_current;	1670	coroapi.current = coro_current;
1137		1671
1138	GCoroAPI = &coroapi;	1672	GCoroAPI = &coroapi;
1139	sv_setiv (sv, (IV)&coroapi);	1673	sv_setiv (sv, (IV)&coroapi);
1140	SvREADONLY_on (sv);	1674	SvREADONLY_on (sv);
1141	}	1675	}
1142	}	1676	}
1143		1677
1144	#if !PERL_MICRO
1145
1146	void	1678	void
1147	ready (self)	1679	_set_current (SV *current)
1148	SV * self
1149	PROTOTYPE: $	1680	PROTOTYPE: $
1150	CODE:	1681	CODE:
1151	api_ready (self);	1682	SvREFCNT_dec (SvRV (coro_current));
		1683	SvRV_set (coro_current, SvREFCNT_inc (SvRV (current)));
1152		1684
1153	#endif	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
1154		1714
1155	int	1715	int
1156	nready (...)	1716	nready (...)
1157	PROTOTYPE:	1717	PROTOTYPE:
1158	CODE:	1718	CODE:
1159	RETVAL = coro_nready;	1719	RETVAL = coro_nready;
1160	OUTPUT:	1720	OUTPUT:
1161	RETVAL	1721	RETVAL
1162		1722
		1723	# for async_pool speedup
1163	void	1724	void
1164	schedule (...)	1725	_pool_1 (SV *cb)
1165	PROTOTYPE:
1166	CODE:	1726	CODE:
1167	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	}
1168		1754
1169	void	1755	void
1170	cede (...)	1756	_pool_2 (SV *cb)
1171	PROTOTYPE:
1172	CODE:	1757	CODE:
1173	api_cede ();	1758	{
		1759	struct coro *coro = SvSTATE (coro_current);
1174		1760
1175	# 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
1176	SV *	1778	SV *
1177	_aio_get_state ()	1779	_get_state ()
1178	CODE:	1780	CODE:
1179	{	1781	{
1180	struct {	1782	struct io_state *data;
1181	int errorno;
1182	int laststype;
1183	int laststatval;
1184	Stat_t statcache;
1185	} data;
1186		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
1187	data.errorno = errno;	1789	data->errorno = errno;
1188	data.laststype = PL_laststype;	1790	data->laststype = PL_laststype;
1189	data.laststatval = PL_laststatval;	1791	data->laststatval = PL_laststatval;
1190	data.statcache = PL_statcache;	1792	data->statcache = PL_statcache;
1191
1192	RETVAL = newSVpvn ((char *)&data, sizeof data);
1193	}	1793	}
1194	OUTPUT:	1794	OUTPUT:
1195	RETVAL	1795	RETVAL
1196		1796
1197	void	1797	void
1198	_aio_set_state (char *data_)	1798	_set_state (char *data_)
1199	PROTOTYPE: $	1799	PROTOTYPE: $
1200	CODE:	1800	CODE:
1201	{	1801	{
1202	struct {	1802	struct io_state data = (void )data_;
1203	int errorno;
1204	int laststype;
1205	int laststatval;
1206	Stat_t statcache;
1207	} data = (void )data_;
1208		1803
1209	errno = data->errorno;	1804	errno = data->errorno;
1210	PL_laststype = data->laststype;	1805	PL_laststype = data->laststype;
1211	PL_laststatval = data->laststatval;	1806	PL_laststatval = data->laststatval;
1212	PL_statcache = data->statcache;	1807	PL_statcache = data->statcache;
1213	}	1808	}
		1809

Diff Legend

-–
+Removed lines
-+
+Added lines
-<
+Changed lines
->
+Changed lines

Comparing Coro/Coro/State.xs (file contents): Revision 1.87 by root, Fri Nov 24 13:40:36 2006 UTC vs. Revision 1.172 by root, Sun Sep 30 13:15:01 2007 UTC

Diff Legend

Comparing Coro/Coro/State.xs (file contents):
Revision 1.87 by root, Fri Nov 24 13:40:36 2006 UTC vs.
Revision 1.172 by root, Sun Sep 30 13:15:01 2007 UTC