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

Comparing Coro/Coro/State.xs (file contents):
Revision 1.95 by root, Sun Nov 26 17:35:42 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 <stdio.h>	75	/* 5.8.7 */
33	#include <errno.h>	76	#ifndef SvRV_set
		77	# define SvRV_set(s,v) SvRV(s) = (v)
		78	#endif
34		79
35	#if !__i386 && !__x86_64 && !__powerpc && !__m68k && !__alpha && !__mips && !__sparc64	80	#if !__i386 && !__x86_64 && !__powerpc && !__m68k && !__alpha && !__mips && !__sparc64
36	# undef STACKGUARD	81	# undef CORO_STACKGUARD
37	#endif
38
39	#ifndef STACKGUARD
40	# define STACKGUARD 0
41	#endif
42
43	#ifdef HAVE_MMAP
44	# include <unistd.h>
45	# include <sys/mman.h>
46	# ifndef MAP_ANONYMOUS
47	# ifdef MAP_ANON
48	# define MAP_ANONYMOUS MAP_ANON
49	# else
50	# undef HAVE_MMAP
51	# endif
52	# endif	82	#endif
53	# include <limits.h>	83
54	# ifndef PAGESIZE	84	#ifndef CORO_STACKGUARD
55	# define PAGESIZE pagesize	85	# define CORO_STACKGUARD 0
56	# define BOOT_PAGESIZE pagesize = sysconf (_SC_PAGESIZE)
57	static long pagesize;
58	# else
59	# define BOOT_PAGESIZE
60	# endif	86	#endif
61	#endif
62		87
63	/* The next macro should declare a variable stacklevel that contains and approximation	88	/* prefer perl internal functions over our own? */
64	* to the current C stack pointer. Its property is that it changes with each call	89	#ifndef CORO_PREFER_PERL_FUNCTIONS
65	* and should be unique. */	90	# define CORO_PREFER_PERL_FUNCTIONS 0
		91	#endif
		92
		93	/* The next macros try to return the current stack pointer, in an as
		94	* portable way as possible. */
66	#define dSTACKLEVEL int stacklevel	95	#define dSTACKLEVEL volatile char stacklevel
67	#define STACKLEVEL ((void *)&stacklevel)	96	#define STACKLEVEL ((void *)&stacklevel)
68		97
69	#define IN_DESTRUCT (PL_main_cv == Nullcv)	98	#define IN_DESTRUCT (PL_main_cv == Nullcv)
70		99
		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))
		109
71	#include "CoroAPI.h"	110	#include "CoroAPI.h"
72
73	#define TRANSFER_SET_STACKLEVEL 0x8bfbfbfb /* magic cookie */
74		111
75	#ifdef USE_ITHREADS	112	#ifdef USE_ITHREADS
76	static perl_mutex coro_mutex;	113	static perl_mutex coro_mutex;
77	# define LOCK do { MUTEX_LOCK (&coro_mutex); } while (0)	114	# define LOCK do { MUTEX_LOCK (&coro_mutex); } while (0)
78	# define UNLOCK do { MUTEX_UNLOCK (&coro_mutex); } while (0)	115	# define UNLOCK do { MUTEX_UNLOCK (&coro_mutex); } while (0)
79	#else	116	#else
80	# define LOCK (void)0	117	# define LOCK (void)0
81	# define UNLOCK (void)0	118	# define UNLOCK (void)0
82	#endif	119	#endif
83		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;
84	static struct CoroAPI coroapi;	131	static struct CoroAPI coroapi;
85	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;
86	static HV coro_state_stash, coro_stash;	134	static HV coro_state_stash, coro_stash;
87	static SV coro_mortal; / will be freed after next transfer */	135	static SV coro_mortal; / will be freed after next transfer */
88		136
		137	/* async_pool helper stuff */
		138	static SV *sv_pool_rss;
		139	static SV *sv_pool_size;
		140	static AV *av_async_pool;
		141
		142	static struct coro_cctx *cctx_first;
		143	static int cctx_count, cctx_idle;
		144
		145	enum {
		146	CC_MAPPED = 0x01,
		147	CC_NOREUSE = 0x02, /* throw this away after tracing */
		148	CC_TRACE = 0x04,
		149	CC_TRACE_SUB = 0x08, /* trace sub calls */
		150	CC_TRACE_LINE = 0x10, /* trace each statement */
		151	CC_TRACE_ALL = CC_TRACE_SUB \| CC_TRACE_LINE,
		152	};
		153
89	/* this is a structure representing a c-level coroutine */	154	/* this is a structure representing a c-level coroutine */
90	typedef struct coro_stack {	155	typedef struct coro_cctx {
91	struct coro_stack *next;	156	struct coro_cctx *next;
92		157
93	/* the stack */	158	/* the stack */
94	void *sptr;	159	void *sptr;
95	long ssize; /* positive == mmap, otherwise malloc */	160	size_t ssize;
96		161
97	/* cpu state */	162	/* cpu state */
98	void idle_sp; / original stacklevel when coroutine was created */	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 */
99	JMPENV *top_env;	165	JMPENV *top_env;
100	coro_context cctx;	166	coro_context cctx;
101	} coro_stack;	167
		168	#if CORO_USE_VALGRIND
		169	int valgrind_id;
		170	#endif
		171	unsigned char flags;
		172	} coro_cctx;
		173
		174	enum {
		175	CF_RUNNING = 0x0001, /* coroutine is running */
		176	CF_READY = 0x0002, /* coroutine is ready */
		177	CF_NEW = 0x0004, /* has never been switched to */
		178	CF_DESTROYED = 0x0008, /* coroutine data has been freed */
		179	};
102		180
103	/* this is a structure representing a perl-level coroutine */	181	/* this is a structure representing a perl-level coroutine */
104	struct coro {	182	struct coro {
105	/* the c coroutine allocated to this perl coroutine, if any */	183	/* the c coroutine allocated to this perl coroutine, if any */
106	coro_stack *stack;	184	coro_cctx *cctx;
107		185
108	/* data associated with this coroutine (initial args) */	186	/* data associated with this coroutine (initial args) */
109	AV *args;	187	AV *args;
110	int refcnt;	188	int refcnt;
		189	int save; /* CORO_SAVE flags */
		190	int flags; /* CF_ flags */
111		191
112	/* optionally saved, might be zero */	192	/* optionally saved, might be zero */
113	AV *defav;	193	AV defav; / @_ */
114	SV *defsv;	194	SV defsv; / $_ */
115	SV *errsv;	195	SV errsv; / $@ */
		196	GV deffh; / default filehandle */
		197	SV irssv; / $/ */
		198	SV irssv_sv; / real $/ cache */
116		199
117	/* saved global state not related to stacks */	200	#define VAR(name,type) type name;
118	U8 dowarn;	201	# include "state.h"
119	I32 in_eval;	202	#undef VAR
120		203
121	/* the stacks and related info (callchain etc..) */	204	/* statistics */
122	PERL_SI *curstackinfo;	205	int usecount; /* number of switches to this coro */
123	AV *curstack;
124	AV *mainstack;
125	SV **stack_sp;
126	OP *op;
127	SV **curpad;
128	AV *comppad;
129	CV *compcv;
130	SV **stack_base;
131	SV **stack_max;
132	SV **tmps_stack;
133	I32 tmps_floor;
134	I32 tmps_ix;
135	I32 tmps_max;
136	I32 *markstack;
137	I32 *markstack_ptr;
138	I32 *markstack_max;
139	I32 *scopestack;
140	I32 scopestack_ix;
141	I32 scopestack_max;
142	ANY *savestack;
143	I32 savestack_ix;
144	I32 savestack_max;
145	OP **retstack;
146	I32 retstack_ix;
147	I32 retstack_max;
148	PMOP *curpm;
149	COP *curcop;
150		206
151	/* coro process data */	207	/* coro process data */
152	int prio;	208	int prio;
		209
		210	/* linked list */
		211	struct coro next, prev;
		212	HV hv; / the perl hash associated with this coro, if any */
153	};	213	};
154		214
155	typedef struct coro *Coro__State;	215	typedef struct coro *Coro__State;
156	typedef struct coro *Coro__State_or_hashref;	216	typedef struct coro *Coro__State_or_hashref;
157		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
158	static AV *	235	static AV *
159	coro_clone_padlist (pTHX_ CV *cv)	236	coro_clone_padlist (pTHX_ CV *cv)
160	{	237	{
161	AV *padlist = CvPADLIST (cv);	238	AV *padlist = CvPADLIST (cv);
162	AV newpadlist, newpad;	239	AV newpadlist, newpad;
163		240
164	newpadlist = newAV ();	241	newpadlist = newAV ();
165	AvREAL_off (newpadlist);	242	AvREAL_off (newpadlist);
166	#if PERL_VERSION < 9	243	#if PERL_VERSION_ATLEAST (5,9,0)
		244	Perl_pad_push (aTHX_ padlist, AvFILLp (padlist) + 1);
		245	#else
167	Perl_pad_push (aTHX_ padlist, AvFILLp (padlist) + 1, 1);	246	Perl_pad_push (aTHX_ padlist, AvFILLp (padlist) + 1, 1);
168	#else
169	Perl_pad_push (aTHX_ padlist, AvFILLp (padlist) + 1);
170	#endif	247	#endif
171	newpad = (AV *)AvARRAY (padlist)[AvFILLp (padlist)];	248	newpad = (AV *)AvARRAY (padlist)[AvFILLp (padlist)];
172	--AvFILLp (padlist);	249	--AvFILLp (padlist);
173		250
174	av_store (newpadlist, 0, SvREFCNT_inc (*av_fetch (padlist, 0, FALSE)));	251	av_store (newpadlist, 0, SvREFCNT_inc (*av_fetch (padlist, 0, FALSE)));
…		…
218		295
219	#define PERL_MAGIC_coro PERL_MAGIC_ext	296	#define PERL_MAGIC_coro PERL_MAGIC_ext
220		297
221	static MGVTBL vtbl_coro = {0, 0, 0, 0, coro_cv_free};	298	static MGVTBL vtbl_coro = {0, 0, 0, 0, coro_cv_free};
222		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
223	/* the next two functions merely cache the padlists */	333	/* the next two functions merely cache the padlists */
224	static void	334	static void
225	get_padlist (pTHX_ CV *cv)	335	get_padlist (pTHX_ CV *cv)
226	{	336	{
227	MAGIC mg = mg_find ((SV )cv, PERL_MAGIC_coro);	337	MAGIC *mg = CORO_MAGIC (cv);
		338	AV *av;
228		339
229	if (mg && AvFILLp ((AV *)mg->mg_obj) >= 0)	340	if (mg && AvFILLp ((av = (AV *)mg->mg_obj)) >= 0)
230	CvPADLIST (cv) = (AV )av_pop ((AV )mg->mg_obj);	341	CvPADLIST (cv) = (AV *)AvARRAY (av)[AvFILLp (av)--];
231	else	342	else
232	{	343	{
233	#if 0	344	#if CORO_PREFER_PERL_FUNCTIONS
234	/* this should work - but it doesn't :( */	345	/* this is probably cleaner, but also slower? */
235	CV *cp = Perl_cv_clone (aTHX_ cv);	346	CV *cp = Perl_cv_clone (cv);
236	CvPADLIST (cv) = CvPADLIST (cp);	347	CvPADLIST (cv) = CvPADLIST (cp);
237	CvPADLIST (cp) = 0;	348	CvPADLIST (cp) = 0;
238	SvREFCNT_dec (cp);	349	SvREFCNT_dec (cp);
239	#else	350	#else
240	CvPADLIST (cv) = coro_clone_padlist (aTHX_ cv);	351	CvPADLIST (cv) = coro_clone_padlist (aTHX_ cv);
…		…
243	}	354	}
244		355
245	static void	356	static void
246	put_padlist (pTHX_ CV *cv)	357	put_padlist (pTHX_ CV *cv)
247	{	358	{
248	MAGIC mg = mg_find ((SV )cv, PERL_MAGIC_coro);	359	MAGIC *mg = CORO_MAGIC (cv);
		360	AV *av;
249		361
250	if (!mg)	362	if (!mg)
251	{	363	{
252	sv_magic ((SV *)cv, 0, PERL_MAGIC_coro, 0, 0);	364	sv_magic ((SV *)cv, 0, PERL_MAGIC_coro, 0, 0);
253	mg = mg_find ((SV *)cv, PERL_MAGIC_coro);	365	mg = mg_find ((SV *)cv, PERL_MAGIC_coro);
254	mg->mg_virtual = &vtbl_coro;	366	mg->mg_virtual = &vtbl_coro;
255	mg->mg_obj = (SV *)newAV ();	367	mg->mg_obj = (SV *)newAV ();
256	}	368	}
257		369
258	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);
259	}	376	}
		377
		378	/ load & save, init *****************************************************/
260		379
261	#define SB do {	380	#define SB do {
262	#define SE } while (0)	381	#define SE } while (0)
263		382
264	#define LOAD(state) load_state(aTHX_ (state));
265	#define SAVE(state,flags) save_state(aTHX_ (state),(flags));
266
267	#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
268		384
269	static void	385	static void
270	load_state(pTHX_ Coro__State c)	386	load_perl (pTHX_ Coro__State c)
271	{	387	{
272	PL_dowarn = c->dowarn;	388	#define VAR(name,type) PL_ ## name = c->name;
273	PL_in_eval = c->in_eval;	389	# include "state.h"
274		390	#undef VAR
275	PL_curstackinfo = c->curstackinfo;
276	PL_curstack = c->curstack;
277	PL_mainstack = c->mainstack;
278	PL_stack_sp = c->stack_sp;
279	PL_op = c->op;
280	PL_curpad = c->curpad;
281	PL_comppad = c->comppad;
282	PL_compcv = c->compcv;
283	PL_stack_base = c->stack_base;
284	PL_stack_max = c->stack_max;
285	PL_tmps_stack = c->tmps_stack;
286	PL_tmps_floor = c->tmps_floor;
287	PL_tmps_ix = c->tmps_ix;
288	PL_tmps_max = c->tmps_max;
289	PL_markstack = c->markstack;
290	PL_markstack_ptr = c->markstack_ptr;
291	PL_markstack_max = c->markstack_max;
292	PL_scopestack = c->scopestack;
293	PL_scopestack_ix = c->scopestack_ix;
294	PL_scopestack_max = c->scopestack_max;
295	PL_savestack = c->savestack;
296	PL_savestack_ix = c->savestack_ix;
297	PL_savestack_max = c->savestack_max;
298	#if PERL_VERSION < 9
299	PL_retstack = c->retstack;
300	PL_retstack_ix = c->retstack_ix;
301	PL_retstack_max = c->retstack_max;
302	#endif
303	PL_curpm = c->curpm;
304	PL_curcop = c->curcop;
305		391
306	if (c->defav) REPLACE_SV (GvAV (PL_defgv), c->defav);	392	if (c->defav) REPLACE_SV (GvAV (PL_defgv), c->defav);
307	if (c->defsv) REPLACE_SV (DEFSV , c->defsv);	393	if (c->defsv) REPLACE_SV (DEFSV , c->defsv);
308	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	}
309		411
310	{	412	{
311	dSP;	413	dSP;
312	CV *cv;	414	CV *cv;
313		415
314	/* now do the ugly restore mess */	416	/* now do the ugly restore mess */
315	while ((cv = (CV *)POPs))	417	while ((cv = (CV *)POPs))
316	{	418	{
317	AV padlist = (AV )POPs;
318
319	if (padlist)
320	{
321	put_padlist (aTHX_ cv); /* mark this padlist as available */	419	put_padlist (aTHX_ cv); /* mark this padlist as available */
322	CvPADLIST(cv) = padlist;	420	CvDEPTH (cv) = PTR2IV (POPs);
323	}	421	CvPADLIST (cv) = (AV *)POPs;
324
325	++CvDEPTH(cv);
326	}	422	}
327		423
328	PUTBACK;	424	PUTBACK;
329	}	425	}
330	}	426	}
331		427
332	static void	428	static void
333	save_state(pTHX_ Coro__State c, int flags)	429	save_perl (pTHX_ Coro__State c)
334	{	430	{
335	{	431	{
336	dSP;	432	dSP;
337	I32 cxix = cxstack_ix;	433	I32 cxix = cxstack_ix;
338	PERL_CONTEXT *ccstk = cxstack;	434	PERL_CONTEXT *ccstk = cxstack;
…		…
341	/*	437	/*
342	* 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
343	* (and reinitialize) all cv's in the whole callchain :(	439	* (and reinitialize) all cv's in the whole callchain :(
344	*/	440	*/
345		441
346	PUSHs (Nullsv);	442	XPUSHs (Nullsv);
347	/* this loop was inspired by pp_caller */	443	/* this loop was inspired by pp_caller */
348	for (;;)	444	for (;;)
349	{	445	{
350	while (cxix >= 0)	446	while (cxix >= 0)
351	{	447	{
352	PERL_CONTEXT *cx = &ccstk[cxix--];	448	PERL_CONTEXT *cx = &ccstk[cxix--];
353		449
354	if (CxTYPE(cx) == CXt_SUB)	450	if (CxTYPE (cx) == CXt_SUB \|\| CxTYPE (cx) == CXt_FORMAT)
355	{	451	{
356	CV *cv = cx->blk_sub.cv;	452	CV *cv = cx->blk_sub.cv;
		453
357	if (CvDEPTH(cv))	454	if (CvDEPTH (cv))
358	{	455	{
359	EXTEND (SP, CvDEPTH(cv)*2);	456	EXTEND (SP, 3);
360
361	while (--CvDEPTH(cv))
362	{
363	/* this tells the restore code to increment CvDEPTH */
364	PUSHs (Nullsv);
365	PUSHs ((SV *)cv);
366	}
367
368	PUSHs ((SV *)CvPADLIST(cv));	457	PUSHs ((SV *)CvPADLIST (cv));
		458	PUSHs (INT2PTR (SV *, CvDEPTH (cv)));
369	PUSHs ((SV *)cv);	459	PUSHs ((SV *)cv);
370		460
		461	CvDEPTH (cv) = 0;
371	get_padlist (aTHX_ cv);	462	get_padlist (aTHX_ cv);
372	}	463	}
373	}	464	}
374	#ifdef CXt_FORMAT
375	else if (CxTYPE(cx) == CXt_FORMAT)
376	{
377	/* I never used formats, so how should I know how these are implemented? */
378	/* my bold guess is as a simple, plain sub... */
379	croak ("CXt_FORMAT not yet handled. Don't switch coroutines from within formats");
380	}
381	#endif
382	}	465	}
383		466
384	if (top_si->si_type == PERLSI_MAIN)	467	if (top_si->si_type == PERLSI_MAIN)
385	break;	468	break;
386		469
387	top_si = top_si->si_prev;	470	top_si = top_si->si_prev;
388	ccstk = top_si->si_cxstack;	471	ccstk = top_si->si_cxstack;
389	cxix = top_si->si_cxix;	472	cxix = top_si->si_cxix;
390	}	473	}
391		474
392	PUTBACK;	475	PUTBACK;
393	}	476	}
394		477
395	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;
396	c->defsv = flags & TRANSFER_SAVE_DEFSV ? SvREFCNT_inc (DEFSV) : 0;	479	c->defsv = c->save & CORO_SAVE_DEFSV ? SvREFCNT_inc (DEFSV) : 0;
397	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;
398		483
399	c->dowarn = PL_dowarn;	484	#define VAR(name,type)c->name = PL_ ## name;
400	c->in_eval = PL_in_eval;	485	# include "state.h"
401		486	#undef VAR
402	c->curstackinfo = PL_curstackinfo;
403	c->curstack = PL_curstack;
404	c->mainstack = PL_mainstack;
405	c->stack_sp = PL_stack_sp;
406	c->op = PL_op;
407	c->curpad = PL_curpad;
408	c->comppad = PL_comppad;
409	c->compcv = PL_compcv;
410	c->stack_base = PL_stack_base;
411	c->stack_max = PL_stack_max;
412	c->tmps_stack = PL_tmps_stack;
413	c->tmps_floor = PL_tmps_floor;
414	c->tmps_ix = PL_tmps_ix;
415	c->tmps_max = PL_tmps_max;
416	c->markstack = PL_markstack;
417	c->markstack_ptr = PL_markstack_ptr;
418	c->markstack_max = PL_markstack_max;
419	c->scopestack = PL_scopestack;
420	c->scopestack_ix = PL_scopestack_ix;
421	c->scopestack_max = PL_scopestack_max;
422	c->savestack = PL_savestack;
423	c->savestack_ix = PL_savestack_ix;
424	c->savestack_max = PL_savestack_max;
425	#if PERL_VERSION < 9
426	c->retstack = PL_retstack;
427	c->retstack_ix = PL_retstack_ix;
428	c->retstack_max = PL_retstack_max;
429	#endif
430	c->curpm = PL_curpm;
431	c->curcop = PL_curcop;
432	}	487	}
433		488
434	/*	489	/*
435	* allocate various perl stacks. This is an exact copy	490	* allocate various perl stacks. This is an exact copy
436	* of perl.c:init_stacks, except that it uses less memory	491	* of perl.c:init_stacks, except that it uses less memory
437	* on the (sometimes correct) assumption that coroutines do	492	* on the (sometimes correct) assumption that coroutines do
438	* not usually need a lot of stackspace.	493	* not usually need a lot of stackspace.
439	*/	494	*/
		495	#if CORO_PREFER_PERL_FUNCTIONS
		496	# define coro_init_stacks init_stacks
		497	#else
440	static void	498	static void
441	coro_init_stacks (pTHX)	499	coro_init_stacks (pTHX)
442	{	500	{
443	LOCK;	501	PL_curstackinfo = new_stackinfo(64, 6);
444
445	PL_curstackinfo = new_stackinfo(96, 1024/sizeof(PERL_CONTEXT) - 1);
446	PL_curstackinfo->si_type = PERLSI_MAIN;	502	PL_curstackinfo->si_type = PERLSI_MAIN;
447	PL_curstack = PL_curstackinfo->si_stack;	503	PL_curstack = PL_curstackinfo->si_stack;
448	PL_mainstack = PL_curstack; /* remember in case we switch stacks */	504	PL_mainstack = PL_curstack; /* remember in case we switch stacks */
449		505
450	PL_stack_base = AvARRAY(PL_curstack);	506	PL_stack_base = AvARRAY(PL_curstack);
451	PL_stack_sp = PL_stack_base;	507	PL_stack_sp = PL_stack_base;
452	PL_stack_max = PL_stack_base + AvMAX(PL_curstack);	508	PL_stack_max = PL_stack_base + AvMAX(PL_curstack);
453		509
454	New(50,PL_tmps_stack,96,SV*);	510	New(50,PL_tmps_stack,64,SV*);
455	PL_tmps_floor = -1;	511	PL_tmps_floor = -1;
456	PL_tmps_ix = -1;	512	PL_tmps_ix = -1;
457	PL_tmps_max = 96;	513	PL_tmps_max = 64;
458		514
459	New(54,PL_markstack,16,I32);	515	New(54,PL_markstack,16,I32);
460	PL_markstack_ptr = PL_markstack;	516	PL_markstack_ptr = PL_markstack;
461	PL_markstack_max = PL_markstack + 16;	517	PL_markstack_max = PL_markstack + 16;
462		518
…		…
466		522
467	New(54,PL_scopestack,16,I32);	523	New(54,PL_scopestack,16,I32);
468	PL_scopestack_ix = 0;	524	PL_scopestack_ix = 0;
469	PL_scopestack_max = 16;	525	PL_scopestack_max = 16;
470		526
471	New(54,PL_savestack,96,ANY);	527	New(54,PL_savestack,64,ANY);
472	PL_savestack_ix = 0;	528	PL_savestack_ix = 0;
473	PL_savestack_max = 96;	529	PL_savestack_max = 64;
474		530
475	#if PERL_VERSION < 9	531	#if !PERL_VERSION_ATLEAST (5,9,0)
476	New(54,PL_retstack,8,OP*);	532	New(54,PL_retstack,4,OP*);
477	PL_retstack_ix = 0;	533	PL_retstack_ix = 0;
478	PL_retstack_max = 8;	534	PL_retstack_max = 4;
479	#endif	535	#endif
480
481	UNLOCK;
482	}	536	}
		537	#endif
483		538
484	/*	539	/*
485	* destroy the stacks, the callchain etc...	540	* destroy the stacks, the callchain etc...
486	*/	541	*/
487	static void	542	static void
488	destroy_stacks(pTHX)	543	coro_destroy_stacks (pTHX)
489	{	544	{
490	if (!IN_DESTRUCT)	545	if (!IN_DESTRUCT)
491	{	546	{
492	/* is this ugly, I ask? */	547	/* restore all saved variables and stuff */
493	LEAVE_SCOPE (0);	548	LEAVE_SCOPE (0);
		549	assert (PL_tmps_floor == -1);
494		550
495	/* sure it is, but more important: is it correct?? :/ */	551	/* free all temporaries */
496	FREETMPS;	552	FREETMPS;
		553	assert (PL_tmps_ix == -1);
497		554
		555	/* unwind all extra stacks */
498	/POPSTACK_TO (PL_mainstack);//D//use/	556	POPSTACK_TO (PL_mainstack);
		557
		558	/* unwind main stack */
		559	dounwind (-1);
499	}	560	}
500		561
501	while (PL_curstackinfo->si_next)	562	while (PL_curstackinfo->si_next)
502	PL_curstackinfo = PL_curstackinfo->si_next;	563	PL_curstackinfo = PL_curstackinfo->si_next;
503		564
504	while (PL_curstackinfo)	565	while (PL_curstackinfo)
505	{	566	{
506	PERL_SI *p = PL_curstackinfo->si_prev;	567	PERL_SI *p = PL_curstackinfo->si_prev;
507		568
508	{ /D//remove/
509	dSP;
510	SWITCHSTACK (PL_curstack, PL_curstackinfo->si_stack);
511	PUTBACK; /* possibly superfluous */
512	}
513
514	if (!IN_DESTRUCT)	569	if (!IN_DESTRUCT)
515	{
516	dounwind (-1);/D//remove/
517	SvREFCNT_dec (PL_curstackinfo->si_stack);	570	SvREFCNT_dec (PL_curstackinfo->si_stack);
518	}
519		571
520	Safefree (PL_curstackinfo->si_cxstack);	572	Safefree (PL_curstackinfo->si_cxstack);
521	Safefree (PL_curstackinfo);	573	Safefree (PL_curstackinfo);
522	PL_curstackinfo = p;	574	PL_curstackinfo = p;
523	}	575	}
524		576
525	Safefree (PL_tmps_stack);	577	Safefree (PL_tmps_stack);
526	Safefree (PL_markstack);	578	Safefree (PL_markstack);
527	Safefree (PL_scopestack);	579	Safefree (PL_scopestack);
528	Safefree (PL_savestack);	580	Safefree (PL_savestack);
529	#if PERL_VERSION < 9	581	#if !PERL_VERSION_ATLEAST (5,9,0)
530	Safefree (PL_retstack);	582	Safefree (PL_retstack);
531	#endif	583	#endif
532	}	584	}
533		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
534	static void	619	static void
535	setup_coro (struct coro *coro)	620	setup_coro (pTHX_ struct coro *coro)
536	{	621	{
537	/*	622	/*
538	* emulate part of the perl startup here.	623	* emulate part of the perl startup here.
539	*/	624	*/
540	dTHX;	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	{
541	dSP;	786	dSP;
542	UNOP myop;	787	LOGOP myop;
543	SV sub_init = (SV )get_cv ("Coro::State::coro_init", FALSE);
544		788
545	coro_init_stacks (aTHX);	789	PL_top_env = &PL_start_env;
546	/PL_curcop = 0;/
547	/PL_in_eval = PL_in_eval;/ /* inherit */
548	SvREFCNT_dec (GvAV (PL_defgv));
549	GvAV (PL_defgv) = coro->args; coro->args = 0;
550		790
551	SPAGAIN;	791	if (cctx->flags & CC_TRACE)
		792	PL_runops = runops_trace;
552		793
553	Zero (&myop, 1, UNOP);	794	Zero (&myop, 1, LOGOP);
554	myop.op_next = Nullop;	795	myop.op_next = PL_op;
555	myop.op_flags = OPf_WANT_VOID;	796	myop.op_flags = OPf_WANT_VOID \| OPf_STACKED;
556		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;
557	PL_op = (OP *)&myop;	803	PL_op = (OP *)&myop;
558
559	PUSHMARK(SP);
560	XPUSHs (sub_init);
561	PUTBACK;
562	PL_op = PL_ppaddr[OP_ENTERSUB](aTHX);	804	PL_op = PL_ppaddr[OP_ENTERSUB](aTHX);
563	SPAGAIN;	805	SPAGAIN;
564
565	ENTER; /* necessary e.g. for dounwind */
566	}	806	}
567		807
568	static void	808	/*
569	free_coro_mortal ()	809	* this is a _very_ stripped down perl interpreter ;)
570	{	810	*/
571	if (coro_mortal)
572	{
573	SvREFCNT_dec (coro_mortal);
574	coro_mortal = 0;
575	}
576	}
577
578	static void	811	static void
579	coro_run (void *arg)	812	coro_run (void *arg)
580	{	813	{
		814	dTHX;
		815
		816	/* coro_run is the alternative tail of transfer(), so unlock here. */
		817	UNLOCK;
		818
		819	/* we now skip the entersub that lead to transfer() */
		820	PL_op = PL_op->op_next;
		821
		822	/* inject a fake subroutine call to cctx_init */
		823	prepare_cctx (aTHX_ (coro_cctx *)arg);
		824
		825	/* somebody or something will hit me for both perl_run and PL_restartop */
		826	PL_restartop = PL_op;
		827	perl_run (PL_curinterp);
		828
581	/*	829	/*
582	* this is a _very_ stripped down perl interpreter ;)	830	* If perl-run returns we assume exit() was being called or the coro
		831	* fell off the end, which seems to be the only valid (non-bug)
		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
583	*/	835	*/
584	dTHX;
585	int ret;
586
587	UNLOCK;
588
589	PL_top_env = &PL_start_env;	836	PL_top_env = main_top_env;
590		837	JMPENV_JUMP (2); /* I do not feel well about the hardcoded 2 at all */
591	sv_setiv (get_sv ("Coro::State::cctx_stack", FALSE), PTR2IV ((coro_stack *)arg));
592	sv_setiv (get_sv ("Coro::State::cctx_restartop", FALSE), PTR2IV (PL_op));
593
594	/* continue at cctx_init, without entersub */
595	PL_restartop = CvSTART (get_cv ("Coro::State::cctx_init", FALSE));
596
597	/* somebody will hit me for both perl_run and PL_restartop */
598	ret = perl_run (aTHX_ PERL_GET_CONTEXT);
599	printf ("ret %d\n", ret);//D
600
601	fputs ("FATAL: C coroutine fell over the edge of the world, aborting.\n", stderr);
602	abort ();
603	}	838	}
604		839
605	static coro_stack *	840	static coro_cctx *
606	stack_new ()	841	cctx_new ()
607	{	842	{
608	coro_stack *stack;	843	coro_cctx *cctx;
		844	void *stack_start;
		845	size_t stack_size;
609		846
		847	++cctx_count;
		848
610	New (0, stack, 1, coro_stack);	849	Newz (0, cctx, 1, coro_cctx);
611		850
612	#if HAVE_MMAP	851	#if HAVE_MMAP
613		852
614	stack->ssize = ((STACKSIZE * sizeof (long) + PAGESIZE - 1) / PAGESIZE + STACKGUARD) * PAGESIZE;	853	cctx->ssize = ((coro_stacksize * sizeof (long) + PAGESIZE - 1) / PAGESIZE + CORO_STACKGUARD) * PAGESIZE;
615	/* mmap suppsedly does allocate-on-write for us */	854	/* mmap supposedly does allocate-on-write for us */
616	stack->sptr = mmap (0, stack->ssize, PROT_EXEC\|PROT_READ\|PROT_WRITE, MAP_PRIVATE\|MAP_ANONYMOUS, 0, 0);	855	cctx->sptr = mmap (0, cctx->ssize, PROT_EXEC\|PROT_READ\|PROT_WRITE, MAP_PRIVATE\|MAP_ANONYMOUS, 0, 0);
617		856
618	if (stack->sptr == (void *)-1)	857	if (cctx->sptr != (void *)-1)
619	{
620	perror ("FATAL: unable to mmap stack for coroutine");
621	_exit (EXIT_FAILURE);
622	}	858	{
623
624	# if STACKGUARD	859	# if CORO_STACKGUARD
625	mprotect (stack->sptr, STACKGUARD * PAGESIZE, PROT_NONE);	860	mprotect (cctx->sptr, CORO_STACKGUARD * PAGESIZE, PROT_NONE);
626	# endif	861	# endif
627		862	stack_start = CORO_STACKGUARD * PAGESIZE + (char *)cctx->sptr;
628	#else	863	stack_size = cctx->ssize - CORO_STACKGUARD * PAGESIZE;
629		864	cctx->flags \|= CC_MAPPED;
630	stack->ssize = STACKSIZE * (long)sizeof (long);
631	New (0, stack->sptr, STACKSIZE, long);
632
633	if (!stack->sptr)
634	{	865	}
		866	else
		867	#endif
		868	{
		869	cctx->ssize = coro_stacksize * (long)sizeof (long);
		870	New (0, cctx->sptr, coro_stacksize, long);
		871
		872	if (!cctx->sptr)
		873	{
635	perror (stderr, "FATAL: unable to malloc stack for coroutine");	874	perror ("FATAL: unable to allocate stack for coroutine");
636	_exit (EXIT_FAILURE);	875	_exit (EXIT_FAILURE);
637	}	876	}
638		877
639	#endif	878	stack_start = cctx->sptr;
		879	stack_size = cctx->ssize;
		880	}
640		881
		882	REGISTER_STACK (cctx, (char )stack_start, (char )stack_start + stack_size);
641	coro_create (&stack->cctx, coro_run, (void *)stack, stack->sptr, stack->ssize);	883	coro_create (&cctx->cctx, coro_run, (void *)cctx, stack_start, stack_size);
642		884
643	return stack;	885	return cctx;
644	}	886	}
645		887
646	static void	888	static void
647	stack_free (coro_stack *stack)	889	cctx_destroy (coro_cctx *cctx)
648	{	890	{
649	if (!stack)	891	if (!cctx)
650	return;	892	return;
651		893
		894	--cctx_count;
		895
		896	#if CORO_USE_VALGRIND
		897	VALGRIND_STACK_DEREGISTER (cctx->valgrind_id);
		898	#endif
		899
652	#if HAVE_MMAP	900	#if HAVE_MMAP
		901	if (cctx->flags & CC_MAPPED)
653	munmap (stack->sptr, stack->ssize);	902	munmap (cctx->sptr, cctx->ssize);
654	#else
655	Safefree (stack->sptr);
656	#endif
657
658	Safefree (stack);
659	}
660
661	static coro_stack *stack_first;
662
663	static coro_stack *
664	stack_get ()
665	{
666	coro_stack *stack;
667
668	if (stack_first)
669	{
670	stack = stack_first;
671	stack_first = stack->next;
672	}
673	else	903	else
		904	#endif
		905	Safefree (cctx->sptr);
		906
		907	Safefree (cctx);
		908	}
		909
		910	static coro_cctx *
		911	cctx_get (pTHX)
		912	{
		913	while (cctx_first)
674	{	914	{
675	stack = stack_new ();	915	coro_cctx *cctx = cctx_first;
676	PL_op = PL_op->op_next;	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);
677	}	923	}
678		924
679	return stack;	925	return cctx_new ();
680	}	926	}
681		927
682	static void	928	static void
683	stack_put (coro_stack *stack)	929	cctx_put (coro_cctx *cctx)
684	{	930	{
685	stack->next = stack_first;	931	/* free another cctx if overlimit */
686	stack_first = stack;	932	if (cctx_idle >= MAX_IDLE_CCTX)
687	}	933	{
		934	coro_cctx *first = cctx_first;
		935	cctx_first = first->next;
		936	--cctx_idle;
688		937
689	/* never call directly, always through the coro_state_transfer global variable */	938	cctx_destroy (first);
690	static void	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
691	transfer_impl (pTHX_ struct coro prev, struct coro next, int flags)	969	transfer (pTHX_ struct coro prev, struct coro next)
692	{	970	{
693	dSTACKLEVEL;	971	dSTACKLEVEL;
694		972
695	/* sometimes transfer is only called to set idle_sp */	973	/* sometimes transfer is only called to set idle_sp */
696	if (flags == TRANSFER_SET_STACKLEVEL)	974	if (!next)
		975	{
697	((coro_stack *)prev)->idle_sp = STACKLEVEL;	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	}
698	else if (prev != next)	979	else if (prev != next)
699	{	980	{
700	coro_stack *prev__stack;	981	coro_cctx *prev__cctx;
		982
		983	if (prev->flags & CF_NEW)
		984	{
		985	/* create a new empty context */
		986	Newz (0, prev->cctx, 1, coro_cctx);
		987	prev->flags &= ~CF_NEW;
		988	prev->flags \|= CF_RUNNING;
		989	}
		990
		991	prev->flags &= ~CF_RUNNING;
		992	next->flags \|= CF_RUNNING;
701		993
702	LOCK;	994	LOCK;
703		995
704	if (next->mainstack)	996	if (next->flags & CF_NEW)
705	{	997	{
706	/* coroutine already started */	998	/* need to start coroutine */
707	SAVE (prev, flags);	999	next->flags &= ~CF_NEW;
708	LOAD (next);	1000	/* first get rid of the old state */
		1001	save_perl (aTHX_ prev);
		1002	/* setup coroutine call */
		1003	setup_coro (aTHX_ next);
709	}	1004	}
710	else	1005	else
711	{	1006	{
712	/* need to start coroutine */	1007	/* coroutine already started */
713	/* first get rid of the old state */	1008	save_perl (aTHX_ prev);
714	SAVE (prev, -1);	1009	load_perl (aTHX_ next);
715	/* setup coroutine call */
716	setup_coro (next);
717	/* need a stack */
718	next->stack = 0;
719	}	1010	}
720		1011
721	if (!prev->stack)
722	/* create a new empty context */
723	Newz (0, prev->stack, 1, coro_stack);
724
725	prev__stack = prev->stack;	1012	prev__cctx = prev->cctx;
726		1013
727	/* possibly "free" the stack */	1014	/* possibly "free" the cctx */
728	if (prev__stack->idle_sp == STACKLEVEL)	1015	if (prev__cctx->idle_sp == STACKLEVEL && !(prev__cctx->flags & CC_TRACE))
729	{	1016	{
730	stack_put (prev__stack);	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
731	prev->stack = 0;	1020	prev->cctx = 0;
		1021
		1022	cctx_put (prev__cctx);
732	}	1023	}
733		1024
		1025	++next->usecount;
		1026
734	if (!next->stack)	1027	if (!next->cctx)
735	next->stack = stack_get ();	1028	next->cctx = cctx_get (aTHX);
736		1029
737	if (prev__stack != next->stack)	1030	if (prev__cctx != next->cctx)
738	{	1031	{
739	prev__stack->top_env = PL_top_env;	1032	prev__cctx->top_env = PL_top_env;
740	PL_top_env = next->stack->top_env;	1033	PL_top_env = next->cctx->top_env;
741	coro_transfer (&prev__stack->cctx, &next->stack->cctx);	1034	coro_transfer (&prev__cctx->cctx, &next->cctx->cctx);
742	}	1035	}
743		1036
744	free_coro_mortal ();	1037	free_coro_mortal (aTHX);
745
746	UNLOCK;	1038	UNLOCK;
747	}	1039	}
748	}	1040	}
749		1041
750	/* use this function pointer to call the above function */
751	/* this is done to increase chances of the compiler not inlining the call */
752	/* not static to make it even harder for the compiler (and theoretically impossible in most cases */
753	void (coro_state_transfer)(pTHX_ struct coro prev, struct coro *next, int flags) = transfer_impl;
754
755	struct transfer_args	1042	struct transfer_args
756	{	1043	{
757	struct coro prev, next;	1044	struct coro prev, next;
758	int flags;
759	};	1045	};
760		1046
761	#define TRANSFER(ta) coro_state_transfer ((ta).prev, (ta).next, (ta).flags)	1047	#define TRANSFER(ta) transfer (aTHX_ (ta).prev, (ta).next)
		1048	#define TRANSFER_CHECK(ta) transfer_check (aTHX_ (ta).prev, (ta).next)
762		1049
		1050	/ high level stuff ******************************************************/
		1051
763	static void	1052	static int
764	coro_state_destroy (struct coro *coro)	1053	coro_state_destroy (pTHX_ struct coro *coro)
765	{	1054	{
766	if (coro->refcnt--)	1055	if (coro->flags & CF_DESTROYED)
767	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 */
768		1070
769	if (coro->mainstack && coro->mainstack != main_mainstack)	1071	if (coro->mainstack && coro->mainstack != main_mainstack)
770	{	1072	{
771	struct coro temp;	1073	struct coro temp;
772		1074
773	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);
774	LOAD (aTHX_ coro);	1084	load_perl (aTHX_ coro);
775		1085
776	destroy_stacks (aTHX);	1086	coro_destroy_stacks (aTHX);
777		1087
778	LOAD ((&temp)); /* this will get rid of defsv etc.. */	1088	load_perl (aTHX_ &temp); /* this will get rid of defsv etc.. */
779		1089
780	coro->mainstack = 0;	1090	coro->mainstack = 0;
781	}	1091	}
782		1092
783	stack_free (coro->stack);	1093	cctx_destroy (coro->cctx);
784	SvREFCNT_dec (coro->args);	1094	SvREFCNT_dec (coro->args);
785	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;
786	}	1101	}
787		1102
788	static int	1103	static int
789	coro_state_clear (SV sv, MAGIC mg)	1104	coro_state_free (pTHX_ SV sv, MAGIC mg)
790	{	1105	{
791	struct coro coro = (struct coro )mg->mg_ptr;	1106	struct coro coro = (struct coro )mg->mg_ptr;
792	mg->mg_ptr = 0;	1107	mg->mg_ptr = 0;
793		1108
		1109	coro->hv = 0;
		1110
		1111	if (--coro->refcnt < 0)
		1112	{
794	coro_state_destroy (coro);	1113	coro_state_destroy (aTHX_ coro);
		1114	Safefree (coro);
		1115	}
795		1116
796	return 0;	1117	return 0;
797	}	1118	}
798		1119
799	static int	1120	static int
800	coro_state_dup (MAGIC mg, CLONE_PARAMS params)	1121	coro_state_dup (pTHX_ MAGIC mg, CLONE_PARAMS params)
801	{	1122	{
802	struct coro coro = (struct coro )mg->mg_ptr;	1123	struct coro coro = (struct coro )mg->mg_ptr;
803		1124
804	++coro->refcnt;	1125	++coro->refcnt;
805		1126
806	return 0;	1127	return 0;
807	}	1128	}
808		1129
809	static MGVTBL coro_state_vtbl = { 0, 0, 0, 0, coro_state_clear, 0, coro_state_dup, 0 };	1130	static MGVTBL coro_state_vtbl = {
810		1131	0, 0, 0, 0,
811	static struct coro *	1132	coro_state_free,
812	SvSTATE (SV *coro)	1133	0,
813	{	1134	#ifdef MGf_DUP
814	HV *stash;	1135	coro_state_dup,
815	MAGIC *mg;	1136	#else
816		1137	# define MGf_DUP 0
817	if (SvROK (coro))	1138	#endif
818	coro = SvRV (coro);	1139	};
819
820	stash = SvSTASH (coro);
821	if (stash != coro_stash && stash != coro_state_stash)
822	{
823	/* very slow, but rare, check */
824	if (!sv_derived_from (sv_2mortal (newRV_inc (coro)), "Coro::State"))
825	croak ("Coro::State object required");
826	}
827
828	mg = SvMAGIC (coro);
829	assert (mg->mg_type == PERL_MAGIC_ext);
830	return (struct coro *)mg->mg_ptr;
831	}
832		1140
833	static void	1141	static void
834	prepare_transfer (pTHX_ struct transfer_args ta, SV prev, SV *next, int flags)	1142	prepare_transfer (pTHX_ struct transfer_args ta, SV prev_sv, SV *next_sv)
835	{	1143	{
836	ta->prev = SvSTATE (prev);	1144	ta->prev = SvSTATE (prev_sv);
837	ta->next = SvSTATE (next);	1145	ta->next = SvSTATE (next_sv);
838	ta->flags = flags;	1146	TRANSFER_CHECK (*ta);
839	}	1147	}
840		1148
841	static void	1149	static void
842	api_transfer (SV prev, SV next, int flags)	1150	api_transfer (SV prev_sv, SV next_sv)
843	{	1151	{
844	dTHX;	1152	dTHX;
845	struct transfer_args ta;	1153	struct transfer_args ta;
846		1154
847	prepare_transfer (aTHX_ &ta, prev, next, flags);	1155	prepare_transfer (aTHX_ &ta, prev_sv, next_sv);
848	TRANSFER (ta);	1156	TRANSFER (ta);
849	}	1157	}
850		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;
		1170	}
		1171
851	/ Coro ******************************************************************/	1172	/ Coro ******************************************************************/
852		1173
853	#define PRIO_MAX 3
854	#define PRIO_HIGH 1
855	#define PRIO_NORMAL 0
856	#define PRIO_LOW -1
857	#define PRIO_IDLE -3
858	#define PRIO_MIN -4
859
860	/* for Coro.pm */
861	static GV coro_current, coro_idle;
862	static AV *coro_ready [PRIO_MAX-PRIO_MIN+1];
863	static int coro_nready;
864
865	static void	1174	static void
866	coro_enq (pTHX_ SV *sv)	1175	coro_enq (pTHX_ SV *coro_sv)
867	{	1176	{
868	int prio;
869
870	if (SvTYPE (sv) != SVt_PVHV)
871	croak ("Coro::ready tried to enqueue something that is not a coroutine");
872
873	prio = SvSTATE (sv)->prio;
874
875	av_push (coro_ready [prio - PRIO_MIN], sv);	1177	av_push (coro_ready [SvSTATE (coro_sv)->prio - PRIO_MIN], coro_sv);
876	coro_nready++;
877	}	1178	}
878		1179
879	static SV *	1180	static SV *
880	coro_deq (pTHX_ int min_prio)	1181	coro_deq (pTHX_ int min_prio)
881	{	1182	{
…		…
885	if (min_prio < 0)	1186	if (min_prio < 0)
886	min_prio = 0;	1187	min_prio = 0;
887		1188
888	for (prio = PRIO_MAX - PRIO_MIN + 1; --prio >= min_prio; )	1189	for (prio = PRIO_MAX - PRIO_MIN + 1; --prio >= min_prio; )
889	if (AvFILLp (coro_ready [prio]) >= 0)	1190	if (AvFILLp (coro_ready [prio]) >= 0)
890	{
891	coro_nready--;
892	return av_shift (coro_ready [prio]);	1191	return av_shift (coro_ready [prio]);
893	}
894		1192
895	return 0;	1193	return 0;
896	}	1194	}
897		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
898	static void	1227	static void
899	api_ready (SV *coro)	1228	prepare_schedule (pTHX_ struct transfer_args *ta)
900	{	1229	{
901	dTHX;	1230	SV prev_sv, next_sv;
902		1231
903	if (SvROK (coro))	1232	for (;;)
904	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);
905		1278
906	LOCK;	1279	LOCK;
907	coro_enq (aTHX_ SvREFCNT_inc (coro));	1280	free_coro_mortal (aTHX);
		1281	coro_mortal = prev_sv;
908	UNLOCK;	1282	UNLOCK;
909	}	1283	}
910		1284
911	static void	1285	static void
912	prepare_schedule (aTHX_ struct transfer_args *ta)
913	{
914	SV current, prev, *next;
915
916	LOCK;
917
918	current = GvSV (coro_current);
919
920	for (;;)
921	{
922	LOCK;
923
924	next = coro_deq (aTHX_ PRIO_MIN);
925
926	if (next)
927	break;
928
929	UNLOCK;
930
931	{
932	dSP;
933
934	ENTER;
935	SAVETMPS;
936
937	PUSHMARK (SP);
938	PUTBACK;
939	call_sv (GvSV (coro_idle), G_DISCARD);
940
941	FREETMPS;
942	LEAVE;
943	}
944	}
945
946	prev = SvRV (current);
947	SvRV (current) = next;
948
949	/* free this only after the transfer */
950	free_coro_mortal ();
951	coro_mortal = prev;
952
953	ta->prev = SvSTATE (prev);
954	ta->next = SvSTATE (next);
955	ta->flags = TRANSFER_SAVE_ALL;
956
957	UNLOCK;
958	}
959
960	static void
961	prepare_cede (aTHX_ struct transfer_args *ta)	1286	prepare_cede (pTHX_ struct transfer_args *ta)
962	{	1287	{
963	LOCK;	1288	api_ready (coro_current);
964	coro_enq (aTHX_ SvREFCNT_inc (SvRV (GvSV (coro_current))));
965	UNLOCK;
966
967	prepare_schedule (ta);	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;
968	}	1304	}
969		1305
970	static void	1306	static void
971	api_schedule (void)	1307	api_schedule (void)
972	{	1308	{
973	dTHX;	1309	dTHX;
974	struct transfer_args ta;	1310	struct transfer_args ta;
975		1311
976	prepare_schedule (&ta);	1312	prepare_schedule (aTHX_ &ta);
977	TRANSFER (ta);	1313	TRANSFER (ta);
978	}	1314	}
979		1315
980	static void	1316	static int
981	api_cede (void)	1317	api_cede (void)
982	{	1318	{
983	dTHX;	1319	dTHX;
984	struct transfer_args ta;	1320	struct transfer_args ta;
985		1321
986	prepare_cede (&ta);	1322	prepare_cede (aTHX_ &ta);
		1323
		1324	if (ta.prev != ta.next)
		1325	{
987	TRANSFER (ta);	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;
988	}	1346	}
989		1347
990	MODULE = Coro::State PACKAGE = Coro::State	1348	MODULE = Coro::State PACKAGE = Coro::State
991		1349
992	PROTOTYPES: DISABLE	1350	PROTOTYPES: DISABLE
…		…
998	#endif	1356	#endif
999	BOOT_PAGESIZE;	1357	BOOT_PAGESIZE;
1000		1358
1001	coro_state_stash = gv_stashpv ("Coro::State", TRUE);	1359	coro_state_stash = gv_stashpv ("Coro::State", TRUE);
1002		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
1003	newCONSTSUB (coro_state_stash, "SAVE_DEFAV", newSViv (TRANSFER_SAVE_DEFAV));	1366	newCONSTSUB (coro_state_stash, "SAVE_DEFAV", newSViv (CORO_SAVE_DEFAV));
1004	newCONSTSUB (coro_state_stash, "SAVE_DEFSV", newSViv (TRANSFER_SAVE_DEFSV));	1367	newCONSTSUB (coro_state_stash, "SAVE_DEFSV", newSViv (CORO_SAVE_DEFSV));
1005	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));
		1371	newCONSTSUB (coro_state_stash, "SAVE_DEF", newSViv (CORO_SAVE_DEF));
		1372	newCONSTSUB (coro_state_stash, "SAVE_ALL", newSViv (CORO_SAVE_ALL));
1006		1373
1007	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;
1008		1379
1009	coroapi.ver = CORO_API_VERSION;	1380	coroapi.ver = CORO_API_VERSION;
1010	coroapi.transfer = api_transfer;	1381	coroapi.transfer = api_transfer;
1011		1382
1012	assert (("PRIO_NORMAL must be 0", !PRIO_NORMAL));	1383	assert (("PRIO_NORMAL must be 0", !PRIO_NORMAL));
…		…
1020	HV *hv;	1391	HV *hv;
1021	int i;	1392	int i;
1022		1393
1023	Newz (0, coro, 1, struct coro);	1394	Newz (0, coro, 1, struct coro);
1024	coro->args = newAV ();	1395	coro->args = newAV ();
		1396	coro->save = CORO_SAVE_DEF;
		1397	coro->flags = CF_NEW;
1025		1398
		1399	if (coro_first) coro_first->prev = coro;
		1400	coro->next = coro_first;
		1401	coro_first = coro;
		1402
1026	hv = newHV ();	1403	coro->hv = hv = newHV ();
1027	sv_magicext ((SV )hv, 0, PERL_MAGIC_ext, &coro_state_vtbl, (char )coro, 0)->mg_flags \|= MGf_DUP;	1404	sv_magicext ((SV )hv, 0, PERL_MAGIC_ext, &coro_state_vtbl, (char )coro, 0)->mg_flags \|= MGf_DUP;
1028	RETVAL = sv_bless (newRV_noinc ((SV *)hv), gv_stashpv (klass, 1));	1405	RETVAL = sv_bless (newRV_noinc ((SV *)hv), gv_stashpv (klass, 1));
1029		1406
1030	for (i = 1; i < items; i++)	1407	for (i = 1; i < items; i++)
1031	av_push (coro->args, newSVsv (ST (i)));	1408	av_push (coro->args, newSVsv (ST (i)));
1032
1033	/coro->mainstack = 0; //actual work is done inside transfer /
1034	/coro->stack = 0;/
1035	}	1409	}
1036	OUTPUT:	1410	OUTPUT:
		1411	RETVAL
		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:
1037	RETVAL	1429	RETVAL
1038		1430
1039	void	1431	void
1040	_set_stacklevel (...)	1432	_set_stacklevel (...)
1041	ALIAS:	1433	ALIAS:
1042	Coro::State::transfer = 1	1434	Coro::State::transfer = 1
1043	Coro::schedule = 2	1435	Coro::schedule = 2
1044	Coro::cede = 3	1436	Coro::cede = 3
1045	Coro::Cont::yield = 4	1437	Coro::cede_notself = 4
1046	CODE:	1438	CODE:
1047	{	1439	{
1048	struct transfer_args ta;	1440	struct transfer_args ta;
1049		1441
1050	switch (ix)	1442	switch (ix)
1051	{	1443	{
1052	case 0:	1444	case 0:
1053	ta.prev = (struct coro )INT2PTR (coro_stack , SvIV (ST (0)));	1445	ta.prev = (struct coro )INT2PTR (coro_cctx , SvIV (ST (0)));
1054	ta.next = 0;	1446	ta.next = 0;
1055	ta.flags = TRANSFER_SET_STACKLEVEL;
1056	break;	1447	break;
1057		1448
1058	case 1:	1449	case 1:
1059	if (items != 3)	1450	if (items != 2)
1060	croak ("Coro::State::transfer(prev,next,flags) expects three arguments, not %d", items);	1451	croak ("Coro::State::transfer (prev,next) expects two arguments, not %d", items);
1061		1452
1062	prepare_transfer (&ta, ST (0), ST (1), SvIV (ST (2)));	1453	prepare_transfer (aTHX_ &ta, ST (0), ST (1));
1063	break;	1454	break;
1064		1455
1065	case 2:	1456	case 2:
1066	prepare_schedule (&ta);	1457	prepare_schedule (aTHX_ &ta);
1067	break;	1458	break;
1068		1459
1069	case 3:	1460	case 3:
1070	prepare_cede (&ta);	1461	prepare_cede (aTHX_ &ta);
1071	break;	1462	break;
1072		1463
1073	case 4:	1464	case 4:
1074	{	1465	if (!prepare_cede_notself (aTHX_ &ta))
1075	SV *yieldstack;	1466	XSRETURN_EMPTY;
1076	SV *sv;
1077	AV *defav = GvAV (PL_defgv);
1078		1467
1079	yieldstack = *hv_fetch (
1080	(HV *)SvRV (GvSV (coro_current)),
1081	"yieldstack", sizeof ("yieldstack") - 1,
1082	0
1083	);
1084
1085	/* set up @_ -- ugly */
1086	av_clear (defav);
1087	av_fill (defav, items - 1);
1088	while (items--)
1089	av_store (defav, items, SvREFCNT_inc (ST(items)));
1090
1091	sv = av_pop ((AV *)SvRV (yieldstack));
1092	ta.prev = SvSTATE (av_fetch ((AV )SvRV (sv), 0, 0));
1093	ta.next = SvSTATE (av_fetch ((AV )SvRV (sv), 1, 0));
1094	ta.flags = 0;
1095	SvREFCNT_dec (sv);
1096	}
1097	break;	1468	break;
1098
1099	}	1469	}
1100		1470
		1471	BARRIER;
1101	TRANSFER (ta);	1472	TRANSFER (ta);
1102	}
1103		1473
1104	void	1474	if (GIMME_V != G_VOID && ta.next != ta.prev)
1105	_clone_state_from (SV dst, SV src)	1475	XSRETURN_YES;
		1476	}
		1477
		1478	bool
		1479	_destroy (SV *coro_sv)
1106	CODE:	1480	CODE:
1107	{	1481	RETVAL = coro_state_destroy (aTHX_ SvSTATE (coro_sv));
1108	struct coro *coro_src = SvSTATE (src);	1482	OUTPUT:
1109		1483	RETVAL
1110	sv_unmagic (SvRV (dst), PERL_MAGIC_ext);
1111
1112	++coro_src->refcnt;
1113	sv_magicext (SvRV (dst), 0, PERL_MAGIC_ext, &coro_state_vtbl, (char *)coro_src, 0)->mg_flags \|= MGf_DUP;
1114	}
1115
1116	void
1117	_nonlocal_goto (IV nextop)
1118	CODE:
1119	/* uuh, somebody will kill me again for this */
1120	PL_op->op_next = INT2PTR (OP *, nextop);
1121		1484
1122	void	1485	void
1123	_exit (code)	1486	_exit (code)
1124	int code	1487	int code
1125	PROTOTYPE: $	1488	PROTOTYPE: $
1126	CODE:	1489	CODE:
1127	_exit (code);	1490	_exit (code);
1128		1491
		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
		1514
		1515	void
		1516	list ()
		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
		1625	CODE:
		1626	switch (ix)
		1627	{
		1628	case 0: RETVAL = coro_rss (aTHX_ coro); break;
		1629	case 1: RETVAL = coro->usecount; break;
		1630	}
		1631	OUTPUT:
		1632	RETVAL
		1633
		1634
1129	MODULE = Coro::State PACKAGE = Coro	1635	MODULE = Coro::State PACKAGE = Coro
1130		1636
1131	BOOT:	1637	BOOT:
1132	{	1638	{
1133	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);
1134		1647
1135	coro_stash = gv_stashpv ("Coro", TRUE);	1648	coro_stash = gv_stashpv ("Coro", TRUE);
1136		1649
1137	newCONSTSUB (coro_stash, "PRIO_MAX", newSViv (PRIO_MAX));	1650	newCONSTSUB (coro_stash, "PRIO_MAX", newSViv (PRIO_MAX));
1138	newCONSTSUB (coro_stash, "PRIO_HIGH", newSViv (PRIO_HIGH));	1651	newCONSTSUB (coro_stash, "PRIO_HIGH", newSViv (PRIO_HIGH));
1139	newCONSTSUB (coro_stash, "PRIO_NORMAL", newSViv (PRIO_NORMAL));	1652	newCONSTSUB (coro_stash, "PRIO_NORMAL", newSViv (PRIO_NORMAL));
1140	newCONSTSUB (coro_stash, "PRIO_LOW", newSViv (PRIO_LOW));	1653	newCONSTSUB (coro_stash, "PRIO_LOW", newSViv (PRIO_LOW));
1141	newCONSTSUB (coro_stash, "PRIO_IDLE", newSViv (PRIO_IDLE));	1654	newCONSTSUB (coro_stash, "PRIO_IDLE", newSViv (PRIO_IDLE));
1142	newCONSTSUB (coro_stash, "PRIO_MIN", newSViv (PRIO_MIN));	1655	newCONSTSUB (coro_stash, "PRIO_MIN", newSViv (PRIO_MIN));
1143		1656
1144	coro_current = gv_fetchpv ("Coro::current", TRUE, SVt_PV);
1145	coro_idle = gv_fetchpv ("Coro::idle" , TRUE, SVt_PV);
1146
1147	for (i = PRIO_MAX - PRIO_MIN + 1; i--; )	1657	for (i = PRIO_MAX - PRIO_MIN + 1; i--; )
1148	coro_ready[i] = newAV ();	1658	coro_ready[i] = newAV ();
1149		1659
1150	{	1660	{
1151	SV *sv = perl_get_sv("Coro::API", 1);	1661	SV *sv = perl_get_sv("Coro::API", 1);
1152		1662
1153	coroapi.schedule = api_schedule;	1663	coroapi.schedule = api_schedule;
		1664	coroapi.save = api_save;
1154	coroapi.cede = api_cede;	1665	coroapi.cede = api_cede;
		1666	coroapi.cede_notself = api_cede_notself;
1155	coroapi.ready = api_ready;	1667	coroapi.ready = api_ready;
		1668	coroapi.is_ready = api_is_ready;
1156	coroapi.nready = &coro_nready;	1669	coroapi.nready = &coro_nready;
1157	coroapi.current = coro_current;	1670	coroapi.current = coro_current;
1158		1671
1159	GCoroAPI = &coroapi;	1672	GCoroAPI = &coroapi;
1160	sv_setiv (sv, (IV)&coroapi);	1673	sv_setiv (sv, (IV)&coroapi);
1161	SvREADONLY_on (sv);	1674	SvREADONLY_on (sv);
1162	}	1675	}
1163	}	1676	}
		1677
		1678	void
		1679	_set_current (SV *current)
		1680	PROTOTYPE: $
		1681	CODE:
		1682	SvREFCNT_dec (SvRV (coro_current));
		1683	SvRV_set (coro_current, SvREFCNT_inc (SvRV (current)));
1164		1684
1165	int	1685	int
1166	prio (Coro::State coro, int newprio = 0)	1686	prio (Coro::State coro, int newprio = 0)
1167	ALIAS:	1687	ALIAS:
1168	nice = 1	1688	nice = 1
…		…
1171	RETVAL = coro->prio;	1691	RETVAL = coro->prio;
1172		1692
1173	if (items > 1)	1693	if (items > 1)
1174	{	1694	{
1175	if (ix)	1695	if (ix)
1176	newprio += coro->prio;	1696	newprio = coro->prio - newprio;
1177		1697
1178	if (newprio < PRIO_MIN) newprio = PRIO_MIN;	1698	if (newprio < PRIO_MIN) newprio = PRIO_MIN;
1179	if (newprio > PRIO_MAX) newprio = PRIO_MAX;	1699	if (newprio > PRIO_MAX) newprio = PRIO_MAX;
1180		1700
1181	coro->prio = newprio;	1701	coro->prio = newprio;
1182	}	1702	}
1183	}	1703	}
		1704	OUTPUT:
		1705	RETVAL
1184		1706
1185	void	1707	SV *
1186	ready (SV *self)	1708	ready (SV *self)
1187	PROTOTYPE: $	1709	PROTOTYPE: $
1188	CODE:	1710	CODE:
1189	api_ready (self);	1711	RETVAL = boolSV (api_ready (self));
		1712	OUTPUT:
		1713	RETVAL
1190		1714
1191	int	1715	int
1192	nready (...)	1716	nready (...)
1193	PROTOTYPE:	1717	PROTOTYPE:
1194	CODE:	1718	CODE:
1195	RETVAL = coro_nready;	1719	RETVAL = coro_nready;
1196	OUTPUT:	1720	OUTPUT:
1197	RETVAL	1721	RETVAL
1198		1722
		1723	# for async_pool speedup
		1724	void
		1725	_pool_1 (SV *cb)
		1726	CODE:
		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	}
		1754
		1755	void
		1756	_pool_2 (SV *cb)
		1757	CODE:
		1758	{
		1759	struct coro *coro = SvSTATE (coro_current);
		1760
		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
1199	MODULE = Coro::State PACKAGE = Coro::AIO	1776	MODULE = Coro::State PACKAGE = Coro::AIO
1200		1777
1201	SV *	1778	SV *
1202	_get_state ()	1779	_get_state ()
1203	CODE:	1780	CODE:
1204	{	1781	{
1205	struct {	1782	struct io_state *data;
1206	int errorno;
1207	int laststype;
1208	int laststatval;
1209	Stat_t statcache;
1210	} data;
1211		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
1212	data.errorno = errno;	1789	data->errorno = errno;
1213	data.laststype = PL_laststype;	1790	data->laststype = PL_laststype;
1214	data.laststatval = PL_laststatval;	1791	data->laststatval = PL_laststatval;
1215	data.statcache = PL_statcache;	1792	data->statcache = PL_statcache;
1216
1217	RETVAL = newSVpvn ((char *)&data, sizeof data);
1218	}	1793	}
1219	OUTPUT:	1794	OUTPUT:
1220	RETVAL	1795	RETVAL
1221		1796
1222	void	1797	void
1223	_set_state (char *data_)	1798	_set_state (char *data_)
1224	PROTOTYPE: $	1799	PROTOTYPE: $
1225	CODE:	1800	CODE:
1226	{	1801	{
1227	struct {	1802	struct io_state data = (void )data_;
1228	int errorno;
1229	int laststype;
1230	int laststatval;
1231	Stat_t statcache;
1232	} data = (void )data_;
1233		1803
1234	errno = data->errorno;	1804	errno = data->errorno;
1235	PL_laststype = data->laststype;	1805	PL_laststype = data->laststype;
1236	PL_laststatval = data->laststatval;	1806	PL_laststatval = data->laststatval;
1237	PL_statcache = data->statcache;	1807	PL_statcache = data->statcache;
1238	}	1808	}
		1809

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Comparing Coro/Coro/State.xs (file contents): Revision 1.95 by root, Sun Nov 26 17:35:42 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 1.95 by root, Sun Nov 26 17:35:42 2006 UTC vs.
Revision 1.172 by root, Sun Sep 30 13:15:01 2007 UTC