ViewVC Help

View File | Revision Log | Show Annotations | Download File

/cvs/Coro/Coro/State.xs

Comparing Coro/Coro/State.xs (file contents):
Revision 1.146 by root, Sat Mar 17 19:51:57 2007 UTC vs.
Revision 1.250 by root, Wed Oct 22 16:34:07 2008 UTC

1	#include "libcoro/coro.c"	1	#include "libcoro/coro.c"
2		2
3	#define PERL_NO_GET_CONTEXT	3	#define PERL_NO_GET_CONTEXT
		4	#define PERL_EXT
4		5
5	#include "EXTERN.h"	6	#include "EXTERN.h"
6	#include "perl.h"	7	#include "perl.h"
7	#include "XSUB.h"	8	#include "XSUB.h"
		9	#include "perliol.h"
8		10
9	#include "patchlevel.h"	11	#include "patchlevel.h"
10		12
11	#include <stdio.h>	13	#include <stdio.h>
12	#include <errno.h>	14	#include <errno.h>
13	#include <assert.h>	15	#include <assert.h>
		16
		17	#ifdef WIN32
		18	# undef setjmp
		19	# undef longjmp
		20	# undef _exit
		21	# define setjmp _setjmp // deep magic, don't ask
		22	#else
		23	# include <inttypes.h> /* most portable stdint.h */
		24	#endif
14		25
15	#ifdef HAVE_MMAP	26	#ifdef HAVE_MMAP
16	# include <unistd.h>	27	# include <unistd.h>
17	# include <sys/mman.h>	28	# include <sys/mman.h>
18	# ifndef MAP_ANONYMOUS	29	# ifndef MAP_ANONYMOUS
…		…
70	# ifndef IS_PADCONST	81	# ifndef IS_PADCONST
71	# define IS_PADCONST(v) 0	82	# define IS_PADCONST(v) 0
72	# endif	83	# endif
73	#endif	84	#endif
74		85
		86	/* 5.8.8 */
		87	#ifndef GV_NOTQUAL
		88	# define GV_NOTQUAL 0
		89	#endif
		90	#ifndef newSV
		91	# define newSV(l) NEWSV(0,l)
		92	#endif
		93	#ifndef SvREFCNT_inc_NN
		94	# define SvREFCNT_inc_NN(sv) SvREFCNT_inc (sv)
		95	#endif
		96
		97	/* 5.11 */
		98	#ifndef CxHASARGS
		99	# define CxHASARGS(cx) (cx)->blk_sub.hasargs
		100	#endif
		101
75	/* 5.8.7 */	102	/* 5.8.7 */
76	#ifndef SvRV_set	103	#ifndef SvRV_set
77	# define SvRV_set(s,v) SvRV(s) = (v)	104	# define SvRV_set(s,v) SvRV(s) = (v)
78	#endif	105	#endif
79		106
…		…
88	/* prefer perl internal functions over our own? */	115	/* prefer perl internal functions over our own? */
89	#ifndef CORO_PREFER_PERL_FUNCTIONS	116	#ifndef CORO_PREFER_PERL_FUNCTIONS
90	# define CORO_PREFER_PERL_FUNCTIONS 0	117	# define CORO_PREFER_PERL_FUNCTIONS 0
91	#endif	118	#endif
92		119
93	/* The next macro should declare a variable stacklevel that contains and approximation	120	/* The next macros try to return the current stack pointer, in an as
94	* to the current C stack pointer. Its property is that it changes with each call	121	* portable way as possible. */
95	* and should be unique. */
96	#define dSTACKLEVEL int stacklevel	122	#define dSTACKLEVEL volatile char stacklevel
97	#define STACKLEVEL ((void *)&stacklevel)	123	#define STACKLEVEL ((void *)&stacklevel)
98		124
99	#define IN_DESTRUCT (PL_main_cv == Nullcv)	125	#define IN_DESTRUCT (PL_main_cv == Nullcv)
100		126
101	#if __GNUC__ >= 3	127	#if __GNUC__ >= 3
102	# define attribute(x) __attribute__(x)	128	# define attribute(x) __attribute__(x)
103	# define BARRIER __asm__ __volatile__ ("" : : : "memory")	129	# define BARRIER __asm__ __volatile__ ("" : : : "memory")
		130	# define expect(expr,value) __builtin_expect ((expr),(value))
104	#else	131	#else
105	# define attribute(x)	132	# define attribute(x)
106	# define BARRIER	133	# define BARRIER
		134	# define expect(expr,value) (expr)
107	#endif	135	#endif
		136
		137	#define expect_false(expr) expect ((expr) != 0, 0)
		138	#define expect_true(expr) expect ((expr) != 0, 1)
108		139
109	#define NOINLINE attribute ((noinline))	140	#define NOINLINE attribute ((noinline))
110		141
111	#include "CoroAPI.h"	142	#include "CoroAPI.h"
112		143
…		…
120	#endif	151	#endif
121		152
122	/* helper storage struct for Coro::AIO */	153	/* helper storage struct for Coro::AIO */
123	struct io_state	154	struct io_state
124	{	155	{
		156	AV *res;
125	int errorno;	157	int errorno;
126	I32 laststype;	158	I32 laststype;
127	int laststatval;	159	int laststatval;
128	Stat_t statcache;	160	Stat_t statcache;
129	};	161	};
130		162
		163	static double (*nvtime)(); /* so why doesn't it take void? */
		164
131	static size_t coro_stacksize = CORO_STACKSIZE;	165	static size_t coro_stacksize = CORO_STACKSIZE;
132	static struct CoroAPI coroapi;	166	static struct CoroAPI coroapi;
133	static AV *main_mainstack; /* used to differentiate between $main and others */	167	static AV *main_mainstack; /* used to differentiate between $main and others */
		168	static JMPENV *main_top_env;
134	static HV *coro_state_stash, *coro_stash;	169	static HV *coro_state_stash, *coro_stash;
135	static SV *coro_mortal; /* will be freed after next transfer */	170	static volatile SV *coro_mortal; /* will be freed after next transfer */
		171
		172	static GV *irsgv; /* $/ */
		173	static GV *stdoutgv; /* *STDOUT */
		174	static SV *rv_diehook;
		175	static SV *rv_warnhook;
		176	static HV *hv_sig; /* %SIG */
		177
		178	/* async_pool helper stuff */
		179	static SV *sv_pool_rss;
		180	static SV *sv_pool_size;
		181	static AV *av_async_pool;
		182
		183	/* Coro::AnyEvent */
		184	static SV *sv_activity;
136		185
137	static struct coro_cctx *cctx_first;	186	static struct coro_cctx *cctx_first;
138	static int cctx_count, cctx_idle;	187	static int cctx_count, cctx_idle;
		188
		189	enum {
		190	CC_MAPPED = 0x01,
		191	CC_NOREUSE = 0x02, /* throw this away after tracing */
		192	CC_TRACE = 0x04,
		193	CC_TRACE_SUB = 0x08, /* trace sub calls */
		194	CC_TRACE_LINE = 0x10, /* trace each statement */
		195	CC_TRACE_ALL = CC_TRACE_SUB | CC_TRACE_LINE,
		196	};
139		197
140	/* this is a structure representing a c-level coroutine */	198	/* this is a structure representing a c-level coroutine */
141	typedef struct coro_cctx {	199	typedef struct coro_cctx {
142	struct coro_cctx *next;	200	struct coro_cctx *next;
143		201
…		…
152	coro_context cctx;	210	coro_context cctx;
153		211
154	#if CORO_USE_VALGRIND	212	#if CORO_USE_VALGRIND
155	int valgrind_id;	213	int valgrind_id;
156	#endif	214	#endif
157	char inuse, mapped;	215	unsigned char flags;
158	} coro_cctx;	216	} coro_cctx;
159		217
160	enum {	218	enum {
161	CF_RUNNING = 0x0001, /* coroutine is running */	219	CF_RUNNING = 0x0001, /* coroutine is running */
162	CF_READY = 0x0002, /* coroutine is ready */	220	CF_READY = 0x0002, /* coroutine is ready */
163	CF_NEW = 0x0004, /* has never been switched to */	221	CF_NEW = 0x0004, /* has never been switched to */
164	CF_DESTROYED = 0x0008, /* coroutine data has been freed */	222	CF_DESTROYED = 0x0008, /* coroutine data has been freed */
165	};	223	};
166		224
		225	/* the structure where most of the perl state is stored, overlaid on the cxstack */
		226	typedef struct {
		227	SV *defsv;
		228	AV *defav;
		229	SV *errsv;
		230	SV *irsgv;
		231	#define VAR(name,type) type name;
		232	# include "state.h"
		233	#undef VAR
		234	} perl_slots;
		235
		236	#define SLOT_COUNT ((sizeof (perl_slots) + sizeof (PERL_CONTEXT) - 1) / sizeof (PERL_CONTEXT))
		237
167	/* this is a structure representing a perl-level coroutine */	238	/* this is a structure representing a perl-level coroutine */
168	struct coro {	239	struct coro {
169	/* the c coroutine allocated to this perl coroutine, if any */	240	/* the c coroutine allocated to this perl coroutine, if any */
170	coro_cctx *cctx;	241	coro_cctx *cctx;
171		242
		243	/* process data */
		244	AV *mainstack;
		245	perl_slots *slot; /* basically the saved sp */
		246
172	/* data associated with this coroutine (initial args) */	247	AV *args; /* data associated with this coroutine (initial args) */
173	AV *args;	248	int refcnt; /* coroutines are refcounted, yes */
174	int refcnt;
175	int save; /* CORO_SAVE flags */
176	int flags; /* CF_ flags */	249	int flags; /* CF_ flags */
		250	HV *hv; /* the perl hash associated with this coro, if any */
177		251
178	/* optionally saved, might be zero */	252	/* statistics */
179	AV *defav; /* @_ */	253	int usecount; /* number of transfers to this coro */
180	SV *defsv; /* $_ */
181	SV *errsv; /* $@ */
182	SV *irssv; /* $/ */
183	SV *irssv_sv; /* real $/ cache */
184
185	#define VAR(name,type) type name;
186	# include "state.h"
187	#undef VAR
188		254
189	/* coro process data */	255	/* coro process data */
190	int prio;	256	int prio;
		257	SV *throw; /* exception to be thrown */
		258
		259	/* async_pool */
		260	SV *saved_deffh;
		261
		262	/* linked list */
		263	struct coro *next, *prev;
191	};	264	};
192		265
193	typedef struct coro *Coro__State;	266	typedef struct coro *Coro__State;
194	typedef struct coro *Coro__State_or_hashref;	267	typedef struct coro *Coro__State_or_hashref;
195		268
…		…
202	#define PRIO_IDLE -3	275	#define PRIO_IDLE -3
203	#define PRIO_MIN -4	276	#define PRIO_MIN -4
204		277
205	/* for Coro.pm */	278	/* for Coro.pm */
206	static SV *coro_current;	279	static SV *coro_current;
		280	static SV *coro_readyhook;
207	static AV *coro_ready [PRIO_MAX-PRIO_MIN+1];	281	static AV *coro_ready [PRIO_MAX-PRIO_MIN+1];
208	static int coro_nready;	282	static int coro_nready;
		283	static struct coro *coro_first;
209		284
210	/** lowlevel stuff **********************************************************/	285	/** lowlevel stuff **********************************************************/
		286
		287	static SV *
		288	coro_get_sv (pTHX_ const char *name, int create)
		289	{
		290	#if PERL_VERSION_ATLEAST (5,10,0)
		291	/* silence stupid and wrong 5.10 warning that I am unable to switch off */
		292	get_sv (name, create);
		293	#endif
		294	return get_sv (name, create);
		295	}
		296
		297	static AV *
		298	coro_get_av (pTHX_ const char *name, int create)
		299	{
		300	#if PERL_VERSION_ATLEAST (5,10,0)
		301	/* silence stupid and wrong 5.10 warning that I am unable to switch off */
		302	get_av (name, create);
		303	#endif
		304	return get_av (name, create);
		305	}
		306
		307	static HV *
		308	coro_get_hv (pTHX_ const char *name, int create)
		309	{
		310	#if PERL_VERSION_ATLEAST (5,10,0)
		311	/* silence stupid and wrong 5.10 warning that I am unable to switch off */
		312	get_hv (name, create);
		313	#endif
		314	return get_hv (name, create);
		315	}
211		316
212	static AV *	317	static AV *
213	coro_clone_padlist (pTHX_ CV *cv)	318	coro_clone_padlist (pTHX_ CV *cv)
214	{	319	{
215	AV *padlist = CvPADLIST (cv);	320	AV *padlist = CvPADLIST (cv);
216	AV *newpadlist, *newpad;	321	AV *newpadlist, *newpad;
217		322
218	newpadlist = newAV ();	323	newpadlist = newAV ();
219	AvREAL_off (newpadlist);	324	AvREAL_off (newpadlist);
220	#if PERL_VERSION_ATLEAST (5,9,0)	325	#if PERL_VERSION_ATLEAST (5,10,0)
221	Perl_pad_push (aTHX_ padlist, AvFILLp (padlist) + 1);	326	Perl_pad_push (aTHX_ padlist, AvFILLp (padlist) + 1);
222	#else	327	#else
223	Perl_pad_push (aTHX_ padlist, AvFILLp (padlist) + 1, 1);	328	Perl_pad_push (aTHX_ padlist, AvFILLp (padlist) + 1, 1);
224	#endif	329	#endif
225	newpad = (AV *)AvARRAY (padlist)[AvFILLp (padlist)];	330	newpad = (AV *)AvARRAY (padlist)[AvFILLp (padlist)];
226	--AvFILLp (padlist);	331	--AvFILLp (padlist);
227		332
228	av_store (newpadlist, 0, SvREFCNT_inc (*av_fetch (padlist, 0, FALSE)));	333	av_store (newpadlist, 0, SvREFCNT_inc_NN (*av_fetch (padlist, 0, FALSE)));
229	av_store (newpadlist, 1, (SV *)newpad);	334	av_store (newpadlist, 1, (SV *)newpad);
230		335
231	return newpadlist;	336	return newpadlist;
232	}	337	}
233		338
…		…
263		368
264	/* casting is fun. */	369	/* casting is fun. */
265	while (&PL_sv_undef != (SV *)(padlist = (AV *)av_pop (av)))	370	while (&PL_sv_undef != (SV *)(padlist = (AV *)av_pop (av)))
266	free_padlist (aTHX_ padlist);	371	free_padlist (aTHX_ padlist);
267		372
268	SvREFCNT_dec (av);	373	SvREFCNT_dec (av); /* sv_magicext increased the refcount */
269		374
270	return 0;	375	return 0;
271	}	376	}
272		377
273	#define PERL_MAGIC_coro PERL_MAGIC_ext	378	#define CORO_MAGIC_type_cv PERL_MAGIC_ext
		379	#define CORO_MAGIC_type_state PERL_MAGIC_ext
274		380
275	static MGVTBL vtbl_coro = {0, 0, 0, 0, coro_cv_free};	381	static MGVTBL coro_cv_vtbl = {
		382	0, 0, 0, 0,
		383	coro_cv_free
		384	};
276		385
277	#define CORO_MAGIC(cv) \	386	#define CORO_MAGIC(sv,type) \
278	SvMAGIC (cv) \	387	SvMAGIC (sv) \
279	? SvMAGIC (cv)->mg_type == PERL_MAGIC_coro \	388	? SvMAGIC (sv)->mg_type == type \
280	? SvMAGIC (cv) \	389	? SvMAGIC (sv) \
281	: mg_find ((SV *)cv, PERL_MAGIC_coro) \	390	: mg_find (sv, type) \
282	: 0	391	: 0
		392
		393	#define CORO_MAGIC_cv(cv) CORO_MAGIC (((SV *)(cv)), CORO_MAGIC_type_cv)
		394	#define CORO_MAGIC_state(sv) CORO_MAGIC (((SV *)(sv)), CORO_MAGIC_type_state)
		395
		396	static struct coro *
		397	SvSTATE_ (pTHX_ SV *coro)
		398	{
		399	HV *stash;
		400	MAGIC *mg;
		401
		402	if (SvROK (coro))
		403	coro = SvRV (coro);
		404
		405	if (expect_false (SvTYPE (coro) != SVt_PVHV))
		406	croak ("Coro::State object required");
		407
		408	stash = SvSTASH (coro);
		409	if (expect_false (stash != coro_stash && stash != coro_state_stash))
		410	{
		411	/* very slow, but rare, check */
		412	if (!sv_derived_from (sv_2mortal (newRV_inc (coro)), "Coro::State"))
		413	croak ("Coro::State object required");
		414	}
		415
		416	mg = CORO_MAGIC_state (coro);
		417	return (struct coro *)mg->mg_ptr;
		418	}
		419
		420	#define SvSTATE(sv) SvSTATE_ (aTHX_ (sv))
283		421
284	/* the next two functions merely cache the padlists */	422	/* the next two functions merely cache the padlists */
285	static void	423	static void
286	get_padlist (pTHX_ CV *cv)	424	get_padlist (pTHX_ CV *cv)
287	{	425	{
288	MAGIC *mg = CORO_MAGIC (cv);	426	MAGIC *mg = CORO_MAGIC_cv (cv);
289	AV *av;	427	AV *av;
290		428
291	if (mg && AvFILLp ((av = (AV *)mg->mg_obj)) >= 0)	429	if (expect_true (mg && AvFILLp ((av = (AV *)mg->mg_obj)) >= 0))
292	CvPADLIST (cv) = (AV *)AvARRAY (av)[AvFILLp (av)--];	430	CvPADLIST (cv) = (AV *)AvARRAY (av)[AvFILLp (av)--];
293	else	431	else
294	{	432	{
295	#if CORO_PREFER_PERL_FUNCTIONS	433	#if CORO_PREFER_PERL_FUNCTIONS
296	/* this is probably cleaner, but also slower? */	434	/* this is probably cleaner? but also slower! */
		435	/* in practise, it seems to be less stable */
297	CV *cp = Perl_cv_clone (cv);	436	CV *cp = Perl_cv_clone (cv);
298	CvPADLIST (cv) = CvPADLIST (cp);	437	CvPADLIST (cv) = CvPADLIST (cp);
299	CvPADLIST (cp) = 0;	438	CvPADLIST (cp) = 0;
300	SvREFCNT_dec (cp);	439	SvREFCNT_dec (cp);
301	#else	440	#else
…		…
305	}	444	}
306		445
307	static void	446	static void
308	put_padlist (pTHX_ CV *cv)	447	put_padlist (pTHX_ CV *cv)
309	{	448	{
310	MAGIC *mg = CORO_MAGIC (cv);	449	MAGIC *mg = CORO_MAGIC_cv (cv);
311	AV *av;	450	AV *av;
312		451
313	if (!mg)	452	if (expect_false (!mg))
314	{	453	mg = sv_magicext ((SV *)cv, (SV *)newAV (), CORO_MAGIC_type_cv, &coro_cv_vtbl, 0, 0);
315	sv_magic ((SV *)cv, 0, PERL_MAGIC_coro, 0, 0);
316	mg = mg_find ((SV *)cv, PERL_MAGIC_coro);
317	mg->mg_virtual = &vtbl_coro;
318	mg->mg_obj = (SV *)newAV ();
319	}
320		454
321	av = (AV *)mg->mg_obj;	455	av = (AV *)mg->mg_obj;
322		456
323	if (AvFILLp (av) >= AvMAX (av))	457	if (expect_false (AvFILLp (av) >= AvMAX (av)))
324	av_extend (av, AvMAX (av) + 1);	458	av_extend (av, AvMAX (av) + 1);
325		459
326	AvARRAY (av)[++AvFILLp (av)] = (SV *)CvPADLIST (cv);	460	AvARRAY (av)[++AvFILLp (av)] = (SV *)CvPADLIST (cv);
327	}	461	}
328		462
329	/** load & save, init *******************************************************/	463	/** load & save, init *******************************************************/
330
331	#define SB do {
332	#define SE } while (0)
333
334	#define REPLACE_SV(sv,val) SB SvREFCNT_dec (sv); (sv) = (val); (val) = 0; SE
335		464
336	static void	465	static void
337	load_perl (pTHX_ Coro__State c)	466	load_perl (pTHX_ Coro__State c)
338	{	467	{
		468	perl_slots *slot = c->slot;
		469	c->slot = 0;
		470
		471	PL_mainstack = c->mainstack;
		472
		473	GvSV (PL_defgv) = slot->defsv;
		474	GvAV (PL_defgv) = slot->defav;
		475	GvSV (PL_errgv) = slot->errsv;
		476	GvSV (irsgv) = slot->irsgv;
		477
339	#define VAR(name,type) PL_ ## name = c->name;	478	#define VAR(name,type) PL_ ## name = slot->name;
340	# include "state.h"	479	# include "state.h"
341	#undef VAR	480	#undef VAR
342
343	if (c->defav) REPLACE_SV (GvAV (PL_defgv), c->defav);
344	if (c->defsv) REPLACE_SV (DEFSV , c->defsv);
345	if (c->errsv) REPLACE_SV (ERRSV , c->errsv);
346	if (c->irssv)
347	{
348	if (c->irssv == PL_rs || sv_eq (PL_rs, c->irssv))
349	SvREFCNT_dec (c->irssv);
350	else
351	{
352	REPLACE_SV (PL_rs, c->irssv);
353	if (!c->irssv_sv) c->irssv_sv = get_sv ("/", 0);
354	sv_setsv (c->irssv_sv, PL_rs);
355	}
356	}
357		481
358	{	482	{
359	dSP;	483	dSP;
		484
360	CV *cv;	485	CV *cv;
361		486
362	/* now do the ugly restore mess */	487	/* now do the ugly restore mess */
363	while ((cv = (CV *)POPs))	488	while (expect_true (cv = (CV *)POPs))
364	{	489	{
365	put_padlist (aTHX_ cv); /* mark this padlist as available */	490	put_padlist (aTHX_ cv); /* mark this padlist as available */
366	CvDEPTH (cv) = PTR2IV (POPs);	491	CvDEPTH (cv) = PTR2IV (POPs);
367	CvPADLIST (cv) = (AV *)POPs;	492	CvPADLIST (cv) = (AV *)POPs;
368	}	493	}
369		494
370	PUTBACK;	495	PUTBACK;
371	}	496	}
372	assert (!PL_comppad || AvARRAY (PL_comppad));//D
373	}	497	}
374		498
375	static void	499	static void
376	save_perl (pTHX_ Coro__State c)	500	save_perl (pTHX_ Coro__State c)
377	{	501	{
378	assert (!PL_comppad || AvARRAY (PL_comppad));//D
379	{	502	{
380	dSP;	503	dSP;
381	I32 cxix = cxstack_ix;	504	I32 cxix = cxstack_ix;
382	PERL_CONTEXT *ccstk = cxstack;	505	PERL_CONTEXT *ccstk = cxstack;
383	PERL_SI *top_si = PL_curstackinfo;	506	PERL_SI *top_si = PL_curstackinfo;
…		…
385	/*	508	/*
386	* the worst thing you can imagine happens first - we have to save	509	* the worst thing you can imagine happens first - we have to save
387	* (and reinitialize) all cv's in the whole callchain :(	510	* (and reinitialize) all cv's in the whole callchain :(
388	*/	511	*/
389		512
390	EXTEND (SP, 3 + 1);
391	PUSHs (Nullsv);	513	XPUSHs (Nullsv);
392	/* this loop was inspired by pp_caller */	514	/* this loop was inspired by pp_caller */
393	for (;;)	515	for (;;)
394	{	516	{
395	while (cxix >= 0)	517	while (expect_true (cxix >= 0))
396	{	518	{
397	PERL_CONTEXT *cx = &ccstk[cxix--];	519	PERL_CONTEXT *cx = &ccstk[cxix--];
398		520
399	if (CxTYPE (cx) == CXt_SUB)	521	if (expect_true (CxTYPE (cx) == CXt_SUB || CxTYPE (cx) == CXt_FORMAT))
400	{	522	{
401	CV *cv = cx->blk_sub.cv;	523	CV *cv = cx->blk_sub.cv;
402		524
403	if (CvDEPTH (cv))	525	if (expect_true (CvDEPTH (cv)))
404	{	526	{
405	EXTEND (SP, 3);	527	EXTEND (SP, 3);
406	PUSHs ((SV *)CvPADLIST (cv));	528	PUSHs ((SV *)CvPADLIST (cv));
407	PUSHs (INT2PTR (SV *, CvDEPTH (cv)));	529	PUSHs (INT2PTR (SV *, (IV)CvDEPTH (cv)));
408	PUSHs ((SV *)cv);	530	PUSHs ((SV *)cv);
409		531
410	CvDEPTH (cv) = 0;	532	CvDEPTH (cv) = 0;
411	get_padlist (aTHX_ cv);	533	get_padlist (aTHX_ cv);
412	}	534	}
413	}	535	}
414	}	536	}
415		537
416	if (top_si->si_type == PERLSI_MAIN)	538	if (expect_true (top_si->si_type == PERLSI_MAIN))
417	break;	539	break;
418		540
419	top_si = top_si->si_prev;	541	top_si = top_si->si_prev;
420	ccstk = top_si->si_cxstack;	542	ccstk = top_si->si_cxstack;
421	cxix = top_si->si_cxix;	543	cxix = top_si->si_cxix;
422	}	544	}
423		545
424	PUTBACK;	546	PUTBACK;
425	}	547	}
426		548
427	c->defav = c->save & CORO_SAVE_DEFAV ? (AV *)SvREFCNT_inc (GvAV (PL_defgv)) : 0;	549	/* allocate some space on the context stack for our purposes */
428	c->defsv = c->save & CORO_SAVE_DEFSV ? SvREFCNT_inc (DEFSV) : 0;	550	/* we manually unroll here, as usually 2 slots is enough */
429	c->errsv = c->save & CORO_SAVE_ERRSV ? SvREFCNT_inc (ERRSV) : 0;	551	if (SLOT_COUNT >= 1) CXINC;
430	c->irssv = c->save & CORO_SAVE_IRSSV ? SvREFCNT_inc (PL_rs) : 0;	552	if (SLOT_COUNT >= 2) CXINC;
		553	if (SLOT_COUNT >= 3) CXINC;
		554	{
		555	int i;
		556	for (i = 3; i < SLOT_COUNT; ++i)
		557	CXINC;
		558	}
		559	cxstack_ix -= SLOT_COUNT; /* undo allocation */
431		560
		561	c->mainstack = PL_mainstack;
		562
		563	{
		564	perl_slots *slot = c->slot = (perl_slots *)(cxstack + cxstack_ix + 1);
		565
		566	slot->defav = GvAV (PL_defgv);
		567	slot->defsv = DEFSV;
		568	slot->errsv = ERRSV;
		569	slot->irsgv = GvSV (irsgv);
		570
432	#define VAR(name,type)c->name = PL_ ## name;	571	#define VAR(name,type) slot->name = PL_ ## name;
433	# include "state.h"	572	# include "state.h"
434	#undef VAR	573	#undef VAR
		574	}
435	}	575	}
436		576
437	/*	577	/*
438	* allocate various perl stacks. This is an exact copy	578	* allocate various perl stacks. This is an exact copy
439	* of perl.c:init_stacks, except that it uses less memory	579	* of perl.c:init_stacks, except that it uses less memory
…		…
444	# define coro_init_stacks init_stacks	584	# define coro_init_stacks init_stacks
445	#else	585	#else
446	static void	586	static void
447	coro_init_stacks (pTHX)	587	coro_init_stacks (pTHX)
448	{	588	{
449	PL_curstackinfo = new_stackinfo(128, 1024/sizeof(PERL_CONTEXT));	589	PL_curstackinfo = new_stackinfo(32, 8);
450	PL_curstackinfo->si_type = PERLSI_MAIN;	590	PL_curstackinfo->si_type = PERLSI_MAIN;
451	PL_curstack = PL_curstackinfo->si_stack;	591	PL_curstack = PL_curstackinfo->si_stack;
452	PL_mainstack = PL_curstack; /* remember in case we switch stacks */	592	PL_mainstack = PL_curstack; /* remember in case we switch stacks */
453		593
454	PL_stack_base = AvARRAY(PL_curstack);	594	PL_stack_base = AvARRAY(PL_curstack);
455	PL_stack_sp = PL_stack_base;	595	PL_stack_sp = PL_stack_base;
456	PL_stack_max = PL_stack_base + AvMAX(PL_curstack);	596	PL_stack_max = PL_stack_base + AvMAX(PL_curstack);
457		597
458	New(50,PL_tmps_stack,128,SV*);	598	New(50,PL_tmps_stack,32,SV*);
459	PL_tmps_floor = -1;	599	PL_tmps_floor = -1;
460	PL_tmps_ix = -1;	600	PL_tmps_ix = -1;
461	PL_tmps_max = 128;	601	PL_tmps_max = 32;
462		602
463	New(54,PL_markstack,32,I32);	603	New(54,PL_markstack,16,I32);
464	PL_markstack_ptr = PL_markstack;	604	PL_markstack_ptr = PL_markstack;
465	PL_markstack_max = PL_markstack + 32;	605	PL_markstack_max = PL_markstack + 16;
466		606
467	#ifdef SET_MARK_OFFSET	607	#ifdef SET_MARK_OFFSET
468	SET_MARK_OFFSET;	608	SET_MARK_OFFSET;
469	#endif	609	#endif
470		610
471	New(54,PL_scopestack,32,I32);	611	New(54,PL_scopestack,8,I32);
472	PL_scopestack_ix = 0;	612	PL_scopestack_ix = 0;
473	PL_scopestack_max = 32;	613	PL_scopestack_max = 8;
474		614
475	New(54,PL_savestack,64,ANY);	615	New(54,PL_savestack,24,ANY);
476	PL_savestack_ix = 0;	616	PL_savestack_ix = 0;
477	PL_savestack_max = 64;	617	PL_savestack_max = 24;
478		618
479	#if !PERL_VERSION_ATLEAST (5,9,0)	619	#if !PERL_VERSION_ATLEAST (5,10,0)
480	New(54,PL_retstack,16,OP*);	620	New(54,PL_retstack,4,OP*);
481	PL_retstack_ix = 0;	621	PL_retstack_ix = 0;
482	PL_retstack_max = 16;	622	PL_retstack_max = 4;
483	#endif	623	#endif
484	}	624	}
485	#endif	625	#endif
486		626
487	/*	627	/*
488	* destroy the stacks, the callchain etc...	628	* destroy the stacks, the callchain etc...
489	*/	629	*/
490	static void	630	static void
491	coro_destroy_stacks (pTHX)	631	coro_destroy_stacks (pTHX)
492	{	632	{
493	if (!IN_DESTRUCT)
494	{
495	/* restore all saved variables and stuff */
496	LEAVE_SCOPE (0);
497	assert (PL_tmps_floor == -1);
498
499	/* free all temporaries */
500	FREETMPS;
501	assert (PL_tmps_ix == -1);
502
503	/* unwind all extra stacks */
504	POPSTACK_TO (PL_mainstack);
505
506	/* unwind main stack */
507	dounwind (-1);
508	}
509
510	while (PL_curstackinfo->si_next)	633	while (PL_curstackinfo->si_next)
511	PL_curstackinfo = PL_curstackinfo->si_next;	634	PL_curstackinfo = PL_curstackinfo->si_next;
512		635
513	while (PL_curstackinfo)	636	while (PL_curstackinfo)
514	{	637	{
…		…
524		647
525	Safefree (PL_tmps_stack);	648	Safefree (PL_tmps_stack);
526	Safefree (PL_markstack);	649	Safefree (PL_markstack);
527	Safefree (PL_scopestack);	650	Safefree (PL_scopestack);
528	Safefree (PL_savestack);	651	Safefree (PL_savestack);
529	#if !PERL_VERSION_ATLEAST (5,9,0)	652	#if !PERL_VERSION_ATLEAST (5,10,0)
530	Safefree (PL_retstack);	653	Safefree (PL_retstack);
531	#endif	654	#endif
532	}	655	}
533		656
		657	static size_t
		658	coro_rss (pTHX_ struct coro *coro)
		659	{
		660	size_t rss = sizeof (*coro);
		661
		662	if (coro->mainstack)
		663	{
		664	perl_slots tmp_slot;
		665	perl_slots *slot;
		666
		667	if (coro->flags & CF_RUNNING)
		668	{
		669	slot = &tmp_slot;
		670
		671	#define VAR(name,type) slot->name = PL_ ## name;
		672	# include "state.h"
		673	#undef VAR
		674	}
		675	else
		676	slot = coro->slot;
		677
		678	if (slot)
		679	{
		680	rss += sizeof (slot->curstackinfo);
		681	rss += (slot->curstackinfo->si_cxmax + 1) * sizeof (PERL_CONTEXT);
		682	rss += sizeof (SV) + sizeof (struct xpvav) + (1 + AvMAX (slot->curstack)) * sizeof (SV *);
		683	rss += slot->tmps_max * sizeof (SV *);
		684	rss += (slot->markstack_max - slot->markstack_ptr) * sizeof (I32);
		685	rss += slot->scopestack_max * sizeof (I32);
		686	rss += slot->savestack_max * sizeof (ANY);
		687
		688	#if !PERL_VERSION_ATLEAST (5,10,0)
		689	rss += slot->retstack_max * sizeof (OP *);
		690	#endif
		691	}
		692	}
		693
		694	return rss;
		695	}
		696
534	/** coroutine stack handling ************************************************/	697	/** coroutine stack handling ************************************************/
535		698
		699	static int (*orig_sigelem_get) (pTHX_ SV *sv, MAGIC *mg);
		700	static int (*orig_sigelem_set) (pTHX_ SV *sv, MAGIC *mg);
		701	static int (*orig_sigelem_clr) (pTHX_ SV *sv, MAGIC *mg);
		702
		703	/* apparently < 5.8.8 */
		704	#ifndef MgPV_nolen_const
		705	#define MgPV_nolen_const(mg) (((((int)(mg)->mg_len)) == HEf_SVKEY) ? \
		706	SvPV_nolen((SV*)((mg)->mg_ptr)) : \
		707	(const char*)(mg)->mg_ptr)
		708	#endif
		709
		710	/*
		711	* This overrides the default magic get method of %SIG elements.
		712	* The original one doesn't provide for reading back of PL_diehook/PL_warnhook
		713	* and instead of tryign to save and restore the hash elements, we just provide
		714	* readback here.
		715	* We only do this when the hook is != 0, as they are often set to 0 temporarily,
		716	* not expecting this to actually change the hook. This is a potential problem
		717	* when a schedule happens then, but we ignore this.
		718	*/
		719	static int
		720	coro_sigelem_get (pTHX_ SV *sv, MAGIC *mg)
		721	{
		722	const char *s = MgPV_nolen_const (mg);
		723
		724	if (*s == '_')
		725	{
		726	SV **svp = 0;
		727
		728	if (strEQ (s, "__DIE__" )) svp = &PL_diehook;
		729	if (strEQ (s, "__WARN__")) svp = &PL_warnhook;
		730
		731	if (svp)
		732	{
		733	sv_setsv (sv, *svp ? *svp : &PL_sv_undef);
		734	return 0;
		735	}
		736	}
		737
		738	return orig_sigelem_get ? orig_sigelem_get (aTHX_ sv, mg) : 0;
		739	}
		740
		741	static int
		742	coro_sigelem_clr (pTHX_ SV *sv, MAGIC *mg)
		743	{
		744	const char *s = MgPV_nolen_const (mg);
		745
		746	if (*s == '_')
		747	{
		748	SV **svp = 0;
		749
		750	if (strEQ (s, "__DIE__" )) svp = &PL_diehook;
		751	if (strEQ (s, "__WARN__")) svp = &PL_warnhook;
		752
		753	if (svp)
		754	{
		755	SV *old = *svp;
		756	*svp = 0;
		757	SvREFCNT_dec (old);
		758	return 0;
		759	}
		760	}
		761
		762	return orig_sigelem_clr ? orig_sigelem_clr (aTHX_ sv, mg) : 0;
		763	}
		764
		765	static int
		766	coro_sigelem_set (pTHX_ SV *sv, MAGIC *mg)
		767	{
		768	const char *s = MgPV_nolen_const (mg);
		769
		770	if (*s == '_')
		771	{
		772	SV **svp = 0;
		773
		774	if (strEQ (s, "__DIE__" )) svp = &PL_diehook;
		775	if (strEQ (s, "__WARN__")) svp = &PL_warnhook;
		776
		777	if (svp)
		778	{
		779	SV *old = *svp;
		780	*svp = newSVsv (sv);
		781	SvREFCNT_dec (old);
		782	return 0;
		783	}
		784	}
		785
		786	return orig_sigelem_set ? orig_sigelem_set (aTHX_ sv, mg) : 0;
		787	}
		788
536	static void	789	static void
537	setup_coro (pTHX_ struct coro *coro)	790	coro_setup (pTHX_ struct coro *coro)
538	{	791	{
539	/*	792	/*
540	* emulate part of the perl startup here.	793	* emulate part of the perl startup here.
541	*/	794	*/
542	coro_init_stacks (aTHX);	795	coro_init_stacks (aTHX);
543		796
		797	PL_runops = RUNOPS_DEFAULT;
544	PL_curcop = &PL_compiling;	798	PL_curcop = &PL_compiling;
545	PL_in_eval = EVAL_NULL;	799	PL_in_eval = EVAL_NULL;
546	PL_comppad = 0;	800	PL_comppad = 0;
547	PL_curpm = 0;	801	PL_curpm = 0;
		802	PL_curpad = 0;
548	PL_localizing = 0;	803	PL_localizing = 0;
549	PL_dirty = 0;	804	PL_dirty = 0;
550	PL_restartop = 0;	805	PL_restartop = 0;
		806	#if PERL_VERSION_ATLEAST (5,10,0)
		807	PL_parser = 0;
		808	#endif
		809
		810	/* recreate the die/warn hooks */
		811	PL_diehook = 0; SvSetMagicSV (*hv_fetch (hv_sig, "__DIE__" , sizeof ("__DIE__" ) - 1, 1), rv_diehook );
		812	PL_warnhook = 0; SvSetMagicSV (*hv_fetch (hv_sig, "__WARN__", sizeof ("__WARN__") - 1, 1), rv_warnhook);
		813
		814	GvSV (PL_defgv) = newSV (0);
		815	GvAV (PL_defgv) = coro->args; coro->args = 0;
		816	GvSV (PL_errgv) = newSV (0);
		817	GvSV (irsgv) = newSVpvn ("\n", 1); sv_magic (GvSV (irsgv), (SV *)irsgv, PERL_MAGIC_sv, "/", 0);
		818	PL_rs = newSVsv (GvSV (irsgv));
		819	PL_defoutgv = (GV *)SvREFCNT_inc_NN (stdoutgv);
551		820
552	{	821	{
553	dSP;	822	dSP;
554	LOGOP myop;	823	LOGOP myop;
555		824
556	SvREFCNT_dec (GvAV (PL_defgv));
557	GvAV (PL_defgv) = coro->args; coro->args = 0;
558
559	Zero (&myop, 1, LOGOP);	825	Zero (&myop, 1, LOGOP);
560	myop.op_next = Nullop;	826	myop.op_next = Nullop;
561	myop.op_flags = OPf_WANT_VOID;	827	myop.op_flags = OPf_WANT_VOID;
562		828
563	PUSHMARK (SP);	829	PUSHMARK (SP);
564	XPUSHs ((SV *)get_cv ("Coro::State::_coro_init", FALSE));	830	XPUSHs (sv_2mortal (av_shift (GvAV (PL_defgv))));
565	PUTBACK;	831	PUTBACK;
566	PL_op = (OP *)&myop;	832	PL_op = (OP *)&myop;
567	PL_op = PL_ppaddr[OP_ENTERSUB](aTHX);	833	PL_op = PL_ppaddr[OP_ENTERSUB](aTHX);
568	SPAGAIN;	834	SPAGAIN;
569	}	835	}
570		836
571	ENTER; /* necessary e.g. for dounwind */	837	/* this newly created coroutine might be run on an existing cctx which most
		838	* likely was suspended in set_stacklevel, called from entersub.
		839	* set_stacklevl doesn't do anything on return, but entersub does LEAVE,
		840	* so we ENTER here for symmetry
		841	*/
		842	ENTER;
		843	}
		844
		845	static void
		846	coro_destroy (pTHX_ struct coro *coro)
		847	{
		848	if (!IN_DESTRUCT)
		849	{
		850	/* restore all saved variables and stuff */
		851	LEAVE_SCOPE (0);
		852	assert (PL_tmps_floor == -1);
		853
		854	/* free all temporaries */
		855	FREETMPS;
		856	assert (PL_tmps_ix == -1);
		857
		858	/* unwind all extra stacks */
		859	POPSTACK_TO (PL_mainstack);
		860
		861	/* unwind main stack */
		862	dounwind (-1);
		863	}
		864
		865	SvREFCNT_dec (GvSV (PL_defgv));
		866	SvREFCNT_dec (GvAV (PL_defgv));
		867	SvREFCNT_dec (GvSV (PL_errgv));
		868	SvREFCNT_dec (PL_defoutgv);
		869	SvREFCNT_dec (PL_rs);
		870	SvREFCNT_dec (GvSV (irsgv));
		871
		872	SvREFCNT_dec (PL_diehook);
		873	SvREFCNT_dec (PL_warnhook);
		874
		875	SvREFCNT_dec (coro->saved_deffh);
		876	SvREFCNT_dec (coro->throw);
		877
		878	coro_destroy_stacks (aTHX);
572	}	879	}
573		880
574	static void	881	static void
575	free_coro_mortal (pTHX)	882	free_coro_mortal (pTHX)
576	{	883	{
577	if (coro_mortal)	884	if (expect_true (coro_mortal))
578	{	885	{
579	SvREFCNT_dec (coro_mortal);	886	SvREFCNT_dec (coro_mortal);
580	coro_mortal = 0;	887	coro_mortal = 0;
581	}	888	}
582	}	889	}
583		890
		891	static int
		892	runops_trace (pTHX)
		893	{
		894	COP *oldcop = 0;
		895	int oldcxix = -2;
		896	struct coro *coro = SvSTATE (coro_current); /* trace cctx is tied to specific coro */
		897	coro_cctx *cctx = coro->cctx;
		898
		899	while ((PL_op = CALL_FPTR (PL_op->op_ppaddr) (aTHX)))
		900	{
		901	PERL_ASYNC_CHECK ();
		902
		903	if (cctx->flags & CC_TRACE_ALL)
		904	{
		905	if (PL_op->op_type == OP_LEAVESUB && cctx->flags & CC_TRACE_SUB)
		906	{
		907	PERL_CONTEXT *cx = &cxstack[cxstack_ix];
		908	SV **bot, **top;
		909	AV *av = newAV (); /* return values */
		910	SV **cb;
		911	dSP;
		912
		913	GV *gv = CvGV (cx->blk_sub.cv);
		914	SV *fullname = sv_2mortal (newSV (0));
		915	if (isGV (gv))
		916	gv_efullname3 (fullname, gv, 0);
		917
		918	bot = PL_stack_base + cx->blk_oldsp + 1;
		919	top = cx->blk_gimme == G_ARRAY ? SP + 1
		920	: cx->blk_gimme == G_SCALAR ? bot + 1
		921	: bot;
		922
		923	av_extend (av, top - bot);
		924	while (bot < top)
		925	av_push (av, SvREFCNT_inc_NN (*bot++));
		926
		927	PL_runops = RUNOPS_DEFAULT;
		928	ENTER;
		929	SAVETMPS;
		930	EXTEND (SP, 3);
		931	PUSHMARK (SP);
		932	PUSHs (&PL_sv_no);
		933	PUSHs (fullname);
		934	PUSHs (sv_2mortal (newRV_noinc ((SV *)av)));
		935	PUTBACK;
		936	cb = hv_fetch ((HV *)SvRV (coro_current), "_trace_sub_cb", sizeof ("_trace_sub_cb") - 1, 0);
		937	if (cb) call_sv (*cb, G_KEEPERR | G_EVAL | G_VOID | G_DISCARD);
		938	SPAGAIN;
		939	FREETMPS;
		940	LEAVE;
		941	PL_runops = runops_trace;
		942	}
		943
		944	if (oldcop != PL_curcop)
		945	{
		946	oldcop = PL_curcop;
		947
		948	if (PL_curcop != &PL_compiling)
		949	{
		950	SV **cb;
		951
		952	if (oldcxix != cxstack_ix && cctx->flags & CC_TRACE_SUB)
		953	{
		954	PERL_CONTEXT *cx = &cxstack[cxstack_ix];
		955
		956	if (CxTYPE (cx) == CXt_SUB && oldcxix < cxstack_ix)
		957	{
		958	runops_proc_t old_runops = PL_runops;
		959	dSP;
		960	GV *gv = CvGV (cx->blk_sub.cv);
		961	SV *fullname = sv_2mortal (newSV (0));
		962
		963	if (isGV (gv))
		964	gv_efullname3 (fullname, gv, 0);
		965
		966	PL_runops = RUNOPS_DEFAULT;
		967	ENTER;
		968	SAVETMPS;
		969	EXTEND (SP, 3);
		970	PUSHMARK (SP);
		971	PUSHs (&PL_sv_yes);
		972	PUSHs (fullname);
		973	PUSHs (CxHASARGS (cx) ? sv_2mortal (newRV_inc ((SV *)cx->blk_sub.argarray)) : &PL_sv_undef);
		974	PUTBACK;
		975	cb = hv_fetch ((HV *)SvRV (coro_current), "_trace_sub_cb", sizeof ("_trace_sub_cb") - 1, 0);
		976	if (cb) call_sv (*cb, G_KEEPERR | G_EVAL | G_VOID | G_DISCARD);
		977	SPAGAIN;
		978	FREETMPS;
		979	LEAVE;
		980	PL_runops = runops_trace;
		981	}
		982
		983	oldcxix = cxstack_ix;
		984	}
		985
		986	if (cctx->flags & CC_TRACE_LINE)
		987	{
		988	dSP;
		989
		990	PL_runops = RUNOPS_DEFAULT;
		991	ENTER;
		992	SAVETMPS;
		993	EXTEND (SP, 3);
		994	PL_runops = RUNOPS_DEFAULT;
		995	PUSHMARK (SP);
		996	PUSHs (sv_2mortal (newSVpv (OutCopFILE (oldcop), 0)));
		997	PUSHs (sv_2mortal (newSViv (CopLINE (oldcop))));
		998	PUTBACK;
		999	cb = hv_fetch ((HV *)SvRV (coro_current), "_trace_line_cb", sizeof ("_trace_line_cb") - 1, 0);
		1000	if (cb) call_sv (*cb, G_KEEPERR | G_EVAL | G_VOID | G_DISCARD);
		1001	SPAGAIN;
		1002	FREETMPS;
		1003	LEAVE;
		1004	PL_runops = runops_trace;
		1005	}
		1006	}
		1007	}
		1008	}
		1009	}
		1010
		1011	TAINT_NOT;
		1012	return 0;
		1013	}
		1014
584	/* inject a fake call to Coro::State::_cctx_init into the execution */	1015	/* inject a fake call to Coro::State::_cctx_init into the execution */
		1016	/* _cctx_init should be careful, as it could be called at almost any time */
		1017	/* during execution of a perl program */
585	static void NOINLINE	1018	static void NOINLINE
586	prepare_cctx (pTHX_ coro_cctx *cctx)	1019	cctx_prepare (pTHX_ coro_cctx *cctx)
587	{	1020	{
588	dSP;	1021	dSP;
589	LOGOP myop;	1022	LOGOP myop;
		1023
		1024	PL_top_env = &PL_start_env;
		1025
		1026	if (cctx->flags & CC_TRACE)
		1027	PL_runops = runops_trace;
590		1028
591	Zero (&myop, 1, LOGOP);	1029	Zero (&myop, 1, LOGOP);
592	myop.op_next = PL_op;	1030	myop.op_next = PL_op;
593	myop.op_flags = OPf_WANT_VOID | OPf_STACKED;	1031	myop.op_flags = OPf_WANT_VOID | OPf_STACKED;
594		1032
…		…
600	PL_op = (OP *)&myop;	1038	PL_op = (OP *)&myop;
601	PL_op = PL_ppaddr[OP_ENTERSUB](aTHX);	1039	PL_op = PL_ppaddr[OP_ENTERSUB](aTHX);
602	SPAGAIN;	1040	SPAGAIN;
603	}	1041	}
604		1042
		1043	/*
		1044	* this is a _very_ stripped down perl interpreter ;)
		1045	*/
605	static void	1046	static void
606	coro_run (void *arg)	1047	cctx_run (void *arg)
607	{	1048	{
608	dTHX;	1049	dTHX;
609		1050
610	/* coro_run is the alternative tail of transfer(), so unlock here. */	1051	/* cctx_run is the alternative tail of transfer(), so unlock here. */
611	UNLOCK;	1052	UNLOCK;
612		1053
613	/*	1054	/* we now skip the entersub that lead to transfer() */
614	* this is a _very_ stripped down perl interpreter ;)	1055	PL_op = PL_op->op_next;
615	*/
616	PL_top_env = &PL_start_env;
617		1056
618	/* inject call to cctx_init */	1057	/* inject a fake subroutine call to cctx_init */
619	prepare_cctx (aTHX_ (coro_cctx *)arg);	1058	cctx_prepare (aTHX_ (coro_cctx *)arg);
620		1059
621	/* somebody will hit me for both perl_run and PL_restartop */	1060	/* somebody or something will hit me for both perl_run and PL_restartop */
622	PL_restartop = PL_op;	1061	PL_restartop = PL_op;
623	perl_run (PL_curinterp);	1062	perl_run (PL_curinterp);
624		1063
625	fputs ("FATAL: C coroutine fell over the edge of the world, aborting. Did you call exit in a coroutine?\n", stderr);	1064	/*
626	abort ();	1065	* If perl-run returns we assume exit() was being called or the coro
		1066	* fell off the end, which seems to be the only valid (non-bug)
		1067	* reason for perl_run to return. We try to exit by jumping to the
		1068	* bootstrap-time "top" top_env, as we cannot restore the "main"
		1069	* coroutine as Coro has no such concept
		1070	*/
		1071	PL_top_env = main_top_env;
		1072	JMPENV_JUMP (2); /* I do not feel well about the hardcoded 2 at all */
627	}	1073	}
628		1074
629	static coro_cctx *	1075	static coro_cctx *
630	cctx_new ()	1076	cctx_new ()
631	{	1077	{
…		…
636	++cctx_count;	1082	++cctx_count;
637		1083
638	Newz (0, cctx, 1, coro_cctx);	1084	Newz (0, cctx, 1, coro_cctx);
639		1085
640	#if HAVE_MMAP	1086	#if HAVE_MMAP
641
642	cctx->ssize = ((coro_stacksize * sizeof (long) + PAGESIZE - 1) / PAGESIZE + CORO_STACKGUARD) * PAGESIZE;	1087	cctx->ssize = ((coro_stacksize * sizeof (long) + PAGESIZE - 1) / PAGESIZE + CORO_STACKGUARD) * PAGESIZE;
643	/* mmap supposedly does allocate-on-write for us */	1088	/* mmap supposedly does allocate-on-write for us */
644	cctx->sptr = mmap (0, cctx->ssize, PROT_EXEC|PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, 0, 0);	1089	cctx->sptr = mmap (0, cctx->ssize, PROT_EXEC|PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, 0, 0);
645		1090
646	if (cctx->sptr != (void *)-1)	1091	if (cctx->sptr != (void *)-1)
…		…
648	# if CORO_STACKGUARD	1093	# if CORO_STACKGUARD
649	mprotect (cctx->sptr, CORO_STACKGUARD * PAGESIZE, PROT_NONE);	1094	mprotect (cctx->sptr, CORO_STACKGUARD * PAGESIZE, PROT_NONE);
650	# endif	1095	# endif
651	stack_start = CORO_STACKGUARD * PAGESIZE + (char *)cctx->sptr;	1096	stack_start = CORO_STACKGUARD * PAGESIZE + (char *)cctx->sptr;
652	stack_size = cctx->ssize - CORO_STACKGUARD * PAGESIZE;	1097	stack_size = cctx->ssize - CORO_STACKGUARD * PAGESIZE;
653	cctx->mapped = 1;	1098	cctx->flags |= CC_MAPPED;
654	}	1099	}
655	else	1100	else
656	#endif	1101	#endif
657	{	1102	{
658	cctx->ssize = coro_stacksize * (long)sizeof (long);	1103	cctx->ssize = coro_stacksize * (long)sizeof (long);
…		…
667	stack_start = cctx->sptr;	1112	stack_start = cctx->sptr;
668	stack_size = cctx->ssize;	1113	stack_size = cctx->ssize;
669	}	1114	}
670		1115
671	REGISTER_STACK (cctx, (char *)stack_start, (char *)stack_start + stack_size);	1116	REGISTER_STACK (cctx, (char *)stack_start, (char *)stack_start + stack_size);
672	coro_create (&cctx->cctx, coro_run, (void *)cctx, stack_start, stack_size);	1117	coro_create (&cctx->cctx, cctx_run, (void *)cctx, stack_start, stack_size);
673		1118
674	return cctx;	1119	return cctx;
675	}	1120	}
676		1121
677	static void	1122	static void
…		…
685	#if CORO_USE_VALGRIND	1130	#if CORO_USE_VALGRIND
686	VALGRIND_STACK_DEREGISTER (cctx->valgrind_id);	1131	VALGRIND_STACK_DEREGISTER (cctx->valgrind_id);
687	#endif	1132	#endif
688		1133
689	#if HAVE_MMAP	1134	#if HAVE_MMAP
690	if (cctx->mapped)	1135	if (cctx->flags & CC_MAPPED)
691	munmap (cctx->sptr, cctx->ssize);	1136	munmap (cctx->sptr, cctx->ssize);
692	else	1137	else
693	#endif	1138	#endif
694	Safefree (cctx->sptr);	1139	Safefree (cctx->sptr);
695		1140
696	Safefree (cctx);	1141	Safefree (cctx);
697	}	1142	}
698		1143
		1144	/* wether this cctx should be destructed */
		1145	#define CCTX_EXPIRED(cctx) ((cctx)->ssize < coro_stacksize || ((cctx)->flags & CC_NOREUSE))
		1146
699	static coro_cctx *	1147	static coro_cctx *
700	cctx_get (pTHX)	1148	cctx_get (pTHX)
701	{	1149	{
702	while (cctx_first)	1150	while (expect_true (cctx_first))
703	{	1151	{
704	coro_cctx *cctx = cctx_first;	1152	coro_cctx *cctx = cctx_first;
705	cctx_first = cctx->next;	1153	cctx_first = cctx->next;
706	--cctx_idle;	1154	--cctx_idle;
707		1155
708	if (cctx->ssize >= coro_stacksize)	1156	if (expect_true (!CCTX_EXPIRED (cctx)))
709	return cctx;	1157	return cctx;
710		1158
711	cctx_destroy (cctx);	1159	cctx_destroy (cctx);
712	}	1160	}
713		1161
714	PL_op = PL_op->op_next;
715	return cctx_new ();	1162	return cctx_new ();
716	}	1163	}
717		1164
718	static void	1165	static void
719	cctx_put (coro_cctx *cctx)	1166	cctx_put (coro_cctx *cctx)
720	{	1167	{
721	/* free another cctx if overlimit */	1168	/* free another cctx if overlimit */
722	if (cctx_idle >= MAX_IDLE_CCTX)	1169	if (expect_false (cctx_idle >= MAX_IDLE_CCTX))
723	{	1170	{
724	coro_cctx *first = cctx_first;	1171	coro_cctx *first = cctx_first;
725	cctx_first = first->next;	1172	cctx_first = first->next;
726	--cctx_idle;	1173	--cctx_idle;
727		1174
728	assert (!first->inuse);
729	cctx_destroy (first);	1175	cctx_destroy (first);
730	}	1176	}
731		1177
732	++cctx_idle;	1178	++cctx_idle;
733	cctx->next = cctx_first;	1179	cctx->next = cctx_first;
734	cctx_first = cctx;	1180	cctx_first = cctx;
735	}	1181	}
736		1182
737	/** coroutine switching *****************************************************/	1183	/** coroutine switching *****************************************************/
738		1184
739	/* never call directly, always through the coro_state_transfer global variable */	1185	static void
		1186	transfer_check (pTHX_ struct coro *prev, struct coro *next)
		1187	{
		1188	if (expect_true (prev != next))
		1189	{
		1190	if (expect_false (!(prev->flags & (CF_RUNNING | CF_NEW))))
		1191	croak ("Coro::State::transfer called with non-running/new prev Coro::State, but can only transfer from running or new states");
		1192
		1193	if (expect_false (next->flags & CF_RUNNING))
		1194	croak ("Coro::State::transfer called with running next Coro::State, but can only transfer to inactive states");
		1195
		1196	if (expect_false (next->flags & CF_DESTROYED))
		1197	croak ("Coro::State::transfer called with destroyed next Coro::State, but can only transfer to inactive states");
		1198
		1199	#if !PERL_VERSION_ATLEAST (5,10,0)
		1200	if (expect_false (PL_lex_state != LEX_NOTPARSING))
		1201	croak ("Coro::State::transfer called while parsing, but this is not supported in your perl version");
		1202	#endif
		1203	}
		1204	}
		1205
		1206	/* always use the TRANSFER macro */
740	static void NOINLINE	1207	static void NOINLINE
741	transfer (pTHX_ struct coro *prev, struct coro *next)	1208	transfer (pTHX_ struct coro *prev, struct coro *next, int force_cctx)
742	{	1209	{
743	dSTACKLEVEL;	1210	dSTACKLEVEL;
		1211	static volatile int has_throw;
744		1212
745	/* sometimes transfer is only called to set idle_sp */	1213	/* sometimes transfer is only called to set idle_sp */
746	if (!next)	1214	if (expect_false (!next))
747	{	1215	{
748	((coro_cctx *)prev)->idle_sp = STACKLEVEL;	1216	((coro_cctx *)prev)->idle_sp = STACKLEVEL;
749	assert (((coro_cctx *)prev)->idle_te = PL_top_env); /* just for the side-effect when asserts are enabled */	1217	assert (((coro_cctx *)prev)->idle_te = PL_top_env); /* just for the side-effect when asserts are enabled */
750	}	1218	}
751	else if (prev != next)	1219	else if (expect_true (prev != next))
752	{	1220	{
753	coro_cctx *prev__cctx;	1221	coro_cctx *prev__cctx;
754		1222
755	if (prev->flags & CF_NEW)	1223	if (expect_false (prev->flags & CF_NEW))
756	{	1224	{
757	/* create a new empty context */	1225	/* create a new empty context */
758	Newz (0, prev->cctx, 1, coro_cctx);	1226	Newz (0, prev->cctx, 1, coro_cctx);
759	prev->cctx->inuse = 1;
760	prev->flags &= ~CF_NEW;	1227	prev->flags &= ~CF_NEW;
761	prev->flags |= CF_RUNNING;	1228	prev->flags |= CF_RUNNING;
762	}	1229	}
763		1230
764	/*TODO: must not croak here */
765	if (!prev->flags & CF_RUNNING)
766	croak ("Coro::State::transfer called with non-running prev Coro::State, but can only transfer from running states");
767
768	if (next->flags & CF_RUNNING)
769	croak ("Coro::State::transfer called with running next Coro::State, but can only transfer to inactive states");
770
771	if (next->flags & CF_DESTROYED)
772	croak ("Coro::State::transfer called with destroyed next Coro::State, but can only transfer to inactive states");
773
774	prev->flags &= ~CF_RUNNING;	1231	prev->flags &= ~CF_RUNNING;
775	next->flags |= CF_RUNNING;	1232	next->flags |= CF_RUNNING;
776		1233
777	LOCK;	1234	LOCK;
778		1235
		1236	/* first get rid of the old state */
		1237	save_perl (aTHX_ prev);
		1238
779	if (next->flags & CF_NEW)	1239	if (expect_false (next->flags & CF_NEW))
780	{	1240	{
781	/* need to start coroutine */	1241	/* need to start coroutine */
782	next->flags &= ~CF_NEW;	1242	next->flags &= ~CF_NEW;
783	/* first get rid of the old state */
784	save_perl (aTHX_ prev);
785	/* setup coroutine call */	1243	/* setup coroutine call */
786	setup_coro (aTHX_ next);	1244	coro_setup (aTHX_ next);
787	/* need a new stack */
788	assert (!next->cctx);
789	}	1245	}
790	else	1246	else
791	{
792	/* coroutine already started */
793	save_perl (aTHX_ prev);
794	load_perl (aTHX_ next);	1247	load_perl (aTHX_ next);
795	}
796		1248
797	prev__cctx = prev->cctx;	1249	prev__cctx = prev->cctx;
798		1250
799	/* possibly "free" the cctx */	1251	/* possibly "free" the cctx */
		1252	if (expect_true (
800	if (prev__cctx->idle_sp == STACKLEVEL)	1253	prev__cctx->idle_sp == STACKLEVEL
		1254	&& !(prev__cctx->flags & CC_TRACE)
		1255	&& !force_cctx
		1256	))
801	{	1257	{
802	/* I assume that STACKLEVEL is a stronger indicator than PL_top_env changes */	1258	/* I assume that STACKLEVEL is a stronger indicator than PL_top_env changes */
803	assert (("ERROR: current top_env must equal previous top_env", PL_top_env == prev__cctx->idle_te));	1259	assert (("ERROR: current top_env must equal previous top_env", PL_top_env == prev__cctx->idle_te));
804		1260
805	prev->cctx = 0;	1261	prev->cctx = 0;
806		1262
		1263	/* if the cctx is about to be destroyed we need to make sure we won't see it in cctx_get */
		1264	/* without this the next cctx_get might destroy the prev__cctx while still in use */
		1265	if (expect_false (CCTX_EXPIRED (prev__cctx)))
		1266	if (!next->cctx)
		1267	next->cctx = cctx_get (aTHX);
		1268
807	cctx_put (prev__cctx);	1269	cctx_put (prev__cctx);
808	prev__cctx->inuse = 0;
809	}	1270	}
810		1271
		1272	++next->usecount;
		1273
811	if (!next->cctx)	1274	if (expect_true (!next->cctx))
812	{
813	next->cctx = cctx_get (aTHX);	1275	next->cctx = cctx_get (aTHX);
814	assert (!next->cctx->inuse);
815	next->cctx->inuse = 1;
816	}
817		1276
		1277	has_throw = !!next->throw;
		1278
818	if (prev__cctx != next->cctx)	1279	if (expect_false (prev__cctx != next->cctx))
819	{	1280	{
820	prev__cctx->top_env = PL_top_env;	1281	prev__cctx->top_env = PL_top_env;
821	PL_top_env = next->cctx->top_env;	1282	PL_top_env = next->cctx->top_env;
822	coro_transfer (&prev__cctx->cctx, &next->cctx->cctx);	1283	coro_transfer (&prev__cctx->cctx, &next->cctx->cctx);
823	}	1284	}
824		1285
825	free_coro_mortal (aTHX);	1286	free_coro_mortal (aTHX);
826	UNLOCK;	1287	UNLOCK;
		1288
		1289	if (expect_false (has_throw))
		1290	{
		1291	struct coro *coro = SvSTATE (coro_current);
		1292
		1293	if (coro->throw)
		1294	{
		1295	SV *exception = coro->throw;
		1296	coro->throw = 0;
		1297	sv_setsv (ERRSV, exception);
		1298	croak (0);
		1299	}
		1300	}
827	}	1301	}
828	}	1302	}
829		1303
830	struct transfer_args	1304	struct transfer_args
831	{	1305	{
832	struct coro *prev, *next;	1306	struct coro *prev, *next;
833	};	1307	};
834		1308
		1309	#define TRANSFER(ta, force_cctx) transfer (aTHX_ (ta).prev, (ta).next, (force_cctx))
835	#define TRANSFER(ta) transfer (aTHX_ (ta).prev, (ta).next)	1310	#define TRANSFER_CHECK(ta) transfer_check (aTHX_ (ta).prev, (ta).next)
836		1311
837	/** high level stuff ********************************************************/	1312	/** high level stuff ********************************************************/
838		1313
839	static int	1314	static int
840	coro_state_destroy (pTHX_ struct coro *coro)	1315	coro_state_destroy (pTHX_ struct coro *coro)
…		…
857		1332
858	if (coro->mainstack && coro->mainstack != main_mainstack)	1333	if (coro->mainstack && coro->mainstack != main_mainstack)
859	{	1334	{
860	struct coro temp;	1335	struct coro temp;
861		1336
862	assert (!(coro->flags & CF_RUNNING));
863
864	Zero (&temp, 1, struct coro);
865	temp.save = CORO_SAVE_ALL;
866
867	if (coro->flags & CF_RUNNING)	1337	if (coro->flags & CF_RUNNING)
868	croak ("FATAL: tried to destroy currently running coroutine");	1338	croak ("FATAL: tried to destroy currently running coroutine");
869		1339
870	save_perl (aTHX_ &temp);	1340	save_perl (aTHX_ &temp);
871	load_perl (aTHX_ coro);	1341	load_perl (aTHX_ coro);
872		1342
873	coro_destroy_stacks (aTHX);	1343	coro_destroy (aTHX_ coro);
874		1344
875	load_perl (aTHX_ &temp); /* this will get rid of defsv etc.. */	1345	load_perl (aTHX_ &temp);
876		1346
877	coro->mainstack = 0;	1347	coro->slot = 0;
878	}	1348	}
879		1349
880	cctx_destroy (coro->cctx);	1350	cctx_destroy (coro->cctx);
881	SvREFCNT_dec (coro->args);	1351	SvREFCNT_dec (coro->args);
882		1352
		1353	if (coro->next) coro->next->prev = coro->prev;
		1354	if (coro->prev) coro->prev->next = coro->next;
		1355	if (coro == coro_first) coro_first = coro->next;
		1356
883	return 1;	1357	return 1;
884	}	1358	}
885		1359
886	static int	1360	static int
887	coro_state_free (pTHX_ SV *sv, MAGIC *mg)	1361	coro_state_free (pTHX_ SV *sv, MAGIC *mg)
888	{	1362	{
889	struct coro *coro = (struct coro *)mg->mg_ptr;	1363	struct coro *coro = (struct coro *)mg->mg_ptr;
890	mg->mg_ptr = 0;	1364	mg->mg_ptr = 0;
		1365
		1366	coro->hv = 0;
891		1367
892	if (--coro->refcnt < 0)	1368	if (--coro->refcnt < 0)
893	{	1369	{
894	coro_state_destroy (aTHX_ coro);	1370	coro_state_destroy (aTHX_ coro);
895	Safefree (coro);	1371	Safefree (coro);
…		…
917	#else	1393	#else
918	# define MGf_DUP 0	1394	# define MGf_DUP 0
919	#endif	1395	#endif
920	};	1396	};
921		1397
922	static struct coro *
923	SvSTATE_ (pTHX_ SV *coro)
924	{
925	HV *stash;
926	MAGIC *mg;
927
928	if (SvROK (coro))
929	coro = SvRV (coro);
930
931	stash = SvSTASH (coro);
932	if (stash != coro_stash && stash != coro_state_stash)
933	{
934	/* very slow, but rare, check */
935	if (!sv_derived_from (sv_2mortal (newRV_inc (coro)), "Coro::State"))
936	croak ("Coro::State object required");
937	}
938
939	mg = CORO_MAGIC (coro);
940	return (struct coro *)mg->mg_ptr;
941	}
942
943	#define SvSTATE(sv) SvSTATE_ (aTHX_ (sv))
944
945	static void	1398	static void
946	prepare_transfer (pTHX_ struct transfer_args *ta, SV *prev_sv, SV *next_sv)	1399	prepare_transfer (pTHX_ struct transfer_args *ta, SV *prev_sv, SV *next_sv)
947	{	1400	{
948	ta->prev = SvSTATE (prev_sv);	1401	ta->prev = SvSTATE (prev_sv);
949	ta->next = SvSTATE (next_sv);	1402	ta->next = SvSTATE (next_sv);
		1403	TRANSFER_CHECK (*ta);
950	}	1404	}
951		1405
952	static void	1406	static void
953	api_transfer (SV *prev_sv, SV *next_sv)	1407	api_transfer (SV *prev_sv, SV *next_sv)
954	{	1408	{
955	dTHX;	1409	dTHX;
956	struct transfer_args ta;	1410	struct transfer_args ta;
957		1411
958	prepare_transfer (aTHX_ &ta, prev_sv, next_sv);	1412	prepare_transfer (aTHX_ &ta, prev_sv, next_sv);
959	TRANSFER (ta);	1413	TRANSFER (ta, 1);
960	}
961
962	static int
963	api_save (SV *coro_sv, int new_save)
964	{
965	dTHX;
966	struct coro *coro = SvSTATE (coro_sv);
967	int old_save = coro->save;
968
969	if (new_save >= 0)
970	coro->save = new_save;
971
972	return old_save;
973	}	1414	}
974		1415
975	/** Coro ********************************************************************/	1416	/** Coro ********************************************************************/
976		1417
977	static void	1418	static void
…		…
979	{	1420	{
980	av_push (coro_ready [SvSTATE (coro_sv)->prio - PRIO_MIN], coro_sv);	1421	av_push (coro_ready [SvSTATE (coro_sv)->prio - PRIO_MIN], coro_sv);
981	}	1422	}
982		1423
983	static SV *	1424	static SV *
984	coro_deq (pTHX_ int min_prio)	1425	coro_deq (pTHX)
985	{	1426	{
986	int prio = PRIO_MAX - PRIO_MIN;	1427	int prio;
987		1428
988	min_prio -= PRIO_MIN;
989	if (min_prio < 0)
990	min_prio = 0;
991
992	for (prio = PRIO_MAX - PRIO_MIN + 1; --prio >= min_prio; )	1429	for (prio = PRIO_MAX - PRIO_MIN + 1; --prio >= 0; )
993	if (AvFILLp (coro_ready [prio]) >= 0)	1430	if (AvFILLp (coro_ready [prio]) >= 0)
994	return av_shift (coro_ready [prio]);	1431	return av_shift (coro_ready [prio]);
995		1432
996	return 0;	1433	return 0;
997	}	1434	}
…		…
999	static int	1436	static int
1000	api_ready (SV *coro_sv)	1437	api_ready (SV *coro_sv)
1001	{	1438	{
1002	dTHX;	1439	dTHX;
1003	struct coro *coro;	1440	struct coro *coro;
		1441	SV *sv_hook;
		1442	void (*xs_hook)(void);
1004		1443
1005	if (SvROK (coro_sv))	1444	if (SvROK (coro_sv))
1006	coro_sv = SvRV (coro_sv);	1445	coro_sv = SvRV (coro_sv);
1007		1446
1008	coro = SvSTATE (coro_sv);	1447	coro = SvSTATE (coro_sv);
…		…
1011	return 0;	1450	return 0;
1012		1451
1013	coro->flags |= CF_READY;	1452	coro->flags |= CF_READY;
1014		1453
1015	LOCK;	1454	LOCK;
		1455
		1456	sv_hook = coro_nready ? 0 : coro_readyhook;
		1457	xs_hook = coro_nready ? 0 : coroapi.readyhook;
		1458
1016	coro_enq (aTHX_ SvREFCNT_inc (coro_sv));	1459	coro_enq (aTHX_ SvREFCNT_inc_NN (coro_sv));
1017	++coro_nready;	1460	++coro_nready;
		1461
1018	UNLOCK;	1462	UNLOCK;
		1463
		1464	if (sv_hook)
		1465	{
		1466	dSP;
		1467
		1468	ENTER;
		1469	SAVETMPS;
		1470
		1471	PUSHMARK (SP);
		1472	PUTBACK;
		1473	call_sv (sv_hook, G_DISCARD);
		1474	SPAGAIN;
		1475
		1476	FREETMPS;
		1477	LEAVE;
		1478	}
		1479
		1480	if (xs_hook)
		1481	xs_hook ();
1019		1482
1020	return 1;	1483	return 1;
1021	}	1484	}
1022		1485
1023	static int	1486	static int
…		…
1033	SV *prev_sv, *next_sv;	1496	SV *prev_sv, *next_sv;
1034		1497
1035	for (;;)	1498	for (;;)
1036	{	1499	{
1037	LOCK;	1500	LOCK;
1038	next_sv = coro_deq (aTHX_ PRIO_MIN);	1501	next_sv = coro_deq (aTHX);
1039		1502
1040	/* nothing to schedule: call the idle handler */	1503	/* nothing to schedule: call the idle handler */
1041	if (!next_sv)	1504	if (expect_false (!next_sv))
1042	{	1505	{
1043	dSP;	1506	dSP;
1044	UNLOCK;	1507	UNLOCK;
1045		1508
1046	ENTER;	1509	ENTER;
1047	SAVETMPS;	1510	SAVETMPS;
1048		1511
1049	PUSHMARK (SP);	1512	PUSHMARK (SP);
1050	PUTBACK;	1513	PUTBACK;
1051	call_sv (get_sv ("Coro::idle", FALSE), G_DISCARD);	1514	call_sv (get_sv ("Coro::idle", FALSE), G_DISCARD);
		1515	SPAGAIN;
1052		1516
1053	FREETMPS;	1517	FREETMPS;
1054	LEAVE;	1518	LEAVE;
1055	continue;	1519	continue;
1056	}	1520	}
1057		1521
1058	ta->next = SvSTATE (next_sv);	1522	ta->next = SvSTATE (next_sv);
1059		1523
1060	/* cannot transfer to destroyed coros, skip and look for next */	1524	/* cannot transfer to destroyed coros, skip and look for next */
1061	if (ta->next->flags & CF_DESTROYED)	1525	if (expect_false (ta->next->flags & CF_DESTROYED))
1062	{	1526	{
1063	UNLOCK;	1527	UNLOCK;
1064	SvREFCNT_dec (next_sv);	1528	SvREFCNT_dec (next_sv);
1065	/* coro_nready is already taken care of by destroy */	1529	/* coro_nready is already taken care of by destroy */
1066	continue;	1530	continue;
…		…
1071	break;	1535	break;
1072	}	1536	}
1073		1537
1074	/* free this only after the transfer */	1538	/* free this only after the transfer */
1075	prev_sv = SvRV (coro_current);	1539	prev_sv = SvRV (coro_current);
1076	SvRV_set (coro_current, next_sv);
1077	ta->prev = SvSTATE (prev_sv);	1540	ta->prev = SvSTATE (prev_sv);
1078		1541	TRANSFER_CHECK (*ta);
1079	assert (ta->next->flags & CF_READY);	1542	assert (ta->next->flags & CF_READY);
1080	ta->next->flags &= ~CF_READY;	1543	ta->next->flags &= ~CF_READY;
		1544	SvRV_set (coro_current, next_sv);
1081		1545
1082	LOCK;	1546	LOCK;
1083	free_coro_mortal (aTHX);	1547	free_coro_mortal (aTHX);
1084	coro_mortal = prev_sv;	1548	coro_mortal = prev_sv;
1085	UNLOCK;	1549	UNLOCK;
…		…
1111	{	1575	{
1112	dTHX;	1576	dTHX;
1113	struct transfer_args ta;	1577	struct transfer_args ta;
1114		1578
1115	prepare_schedule (aTHX_ &ta);	1579	prepare_schedule (aTHX_ &ta);
1116	TRANSFER (ta);	1580	TRANSFER (ta, 1);
1117	}	1581	}
1118		1582
1119	static int	1583	static int
1120	api_cede (void)	1584	api_cede (void)
1121	{	1585	{
1122	dTHX;	1586	dTHX;
1123	struct transfer_args ta;	1587	struct transfer_args ta;
1124		1588
1125	prepare_cede (aTHX_ &ta);	1589	prepare_cede (aTHX_ &ta);
1126		1590
1127	if (ta.prev != ta.next)	1591	if (expect_true (ta.prev != ta.next))
1128	{	1592	{
1129	TRANSFER (ta);	1593	TRANSFER (ta, 1);
1130	return 1;	1594	return 1;
1131	}	1595	}
1132	else	1596	else
1133	return 0;	1597	return 0;
1134	}	1598	}
…		…
1139	dTHX;	1603	dTHX;
1140	struct transfer_args ta;	1604	struct transfer_args ta;
1141		1605
1142	if (prepare_cede_notself (aTHX_ &ta))	1606	if (prepare_cede_notself (aTHX_ &ta))
1143	{	1607	{
1144	TRANSFER (ta);	1608	TRANSFER (ta, 1);
1145	return 1;	1609	return 1;
1146	}	1610	}
1147	else	1611	else
1148	return 0;	1612	return 0;
1149	}	1613	}
1150		1614
		1615	static void
		1616	api_trace (SV *coro_sv, int flags)
		1617	{
		1618	dTHX;
		1619	struct coro *coro = SvSTATE (coro_sv);
		1620
		1621	if (flags & CC_TRACE)
		1622	{
		1623	if (!coro->cctx)
		1624	coro->cctx = cctx_new ();
		1625	else if (!(coro->cctx->flags & CC_TRACE))
		1626	croak ("cannot enable tracing on coroutine with custom stack");
		1627
		1628	coro->cctx->flags |= CC_NOREUSE | (flags & (CC_TRACE | CC_TRACE_ALL));
		1629	}
		1630	else if (coro->cctx && coro->cctx->flags & CC_TRACE)
		1631	{
		1632	coro->cctx->flags &= ~(CC_TRACE | CC_TRACE_ALL);
		1633
		1634	if (coro->flags & CF_RUNNING)
		1635	PL_runops = RUNOPS_DEFAULT;
		1636	else
		1637	coro->slot->runops = RUNOPS_DEFAULT;
		1638	}
		1639	}
		1640
		1641	static int
		1642	coro_gensub_free (pTHX_ SV *sv, MAGIC *mg)
		1643	{
		1644	AV *padlist;
		1645	AV *av = (AV *)mg->mg_obj;
		1646
		1647	abort ();
		1648
		1649	return 0;
		1650	}
		1651
		1652	static MGVTBL coro_gensub_vtbl = {
		1653	0, 0, 0, 0,
		1654	coro_gensub_free
		1655	};
		1656
		1657	/*****************************************************************************/
		1658	/* PerlIO::cede */
		1659
		1660	typedef struct
		1661	{
		1662	PerlIOBuf base;
		1663	NV next, every;
		1664	} PerlIOCede;
		1665
		1666	static IV
		1667	PerlIOCede_pushed (pTHX_ PerlIO *f, const char *mode, SV *arg, PerlIO_funcs *tab)
		1668	{
		1669	PerlIOCede *self = PerlIOSelf (f, PerlIOCede);
		1670
		1671	self->every = SvCUR (arg) ? SvNV (arg) : 0.01;
		1672	self->next = nvtime () + self->every;
		1673
		1674	return PerlIOBuf_pushed (aTHX_ f, mode, Nullsv, tab);
		1675	}
		1676
		1677	static SV *
		1678	PerlIOCede_getarg (pTHX_ PerlIO *f, CLONE_PARAMS *param, int flags)
		1679	{
		1680	PerlIOCede *self = PerlIOSelf (f, PerlIOCede);
		1681
		1682	return newSVnv (self->every);
		1683	}
		1684
		1685	static IV
		1686	PerlIOCede_flush (pTHX_ PerlIO *f)
		1687	{
		1688	PerlIOCede *self = PerlIOSelf (f, PerlIOCede);
		1689	double now = nvtime ();
		1690
		1691	if (now >= self->next)
		1692	{
		1693	api_cede ();
		1694	self->next = now + self->every;
		1695	}
		1696
		1697	return PerlIOBuf_flush (aTHX_ f);
		1698	}
		1699
		1700	static PerlIO_funcs PerlIO_cede =
		1701	{
		1702	sizeof(PerlIO_funcs),
		1703	"cede",
		1704	sizeof(PerlIOCede),
		1705	PERLIO_K_DESTRUCT | PERLIO_K_RAW,
		1706	PerlIOCede_pushed,
		1707	PerlIOBuf_popped,
		1708	PerlIOBuf_open,
		1709	PerlIOBase_binmode,
		1710	PerlIOCede_getarg,
		1711	PerlIOBase_fileno,
		1712	PerlIOBuf_dup,
		1713	PerlIOBuf_read,
		1714	PerlIOBuf_unread,
		1715	PerlIOBuf_write,
		1716	PerlIOBuf_seek,
		1717	PerlIOBuf_tell,
		1718	PerlIOBuf_close,
		1719	PerlIOCede_flush,
		1720	PerlIOBuf_fill,
		1721	PerlIOBase_eof,
		1722	PerlIOBase_error,
		1723	PerlIOBase_clearerr,
		1724	PerlIOBase_setlinebuf,
		1725	PerlIOBuf_get_base,
		1726	PerlIOBuf_bufsiz,
		1727	PerlIOBuf_get_ptr,
		1728	PerlIOBuf_get_cnt,
		1729	PerlIOBuf_set_ptrcnt,
		1730	};
		1731
		1732
1151	MODULE = Coro::State PACKAGE = Coro::State	1733	MODULE = Coro::State PACKAGE = Coro::State PREFIX = api_
1152		1734
1153	PROTOTYPES: DISABLE	1735	PROTOTYPES: DISABLE
1154		1736
1155	BOOT:	1737	BOOT:
1156	{	1738	{
1157	#ifdef USE_ITHREADS	1739	#ifdef USE_ITHREADS
1158	MUTEX_INIT (&coro_mutex);	1740	MUTEX_INIT (&coro_mutex);
1159	#endif	1741	#endif
1160	BOOT_PAGESIZE;	1742	BOOT_PAGESIZE;
1161		1743
		1744	irsgv = gv_fetchpv ("/" , GV_ADD|GV_NOTQUAL, SVt_PV);
		1745	stdoutgv = gv_fetchpv ("STDOUT", GV_ADD|GV_NOTQUAL, SVt_PVIO);
		1746
		1747	orig_sigelem_get = PL_vtbl_sigelem.svt_get; PL_vtbl_sigelem.svt_get = coro_sigelem_get;
		1748	orig_sigelem_set = PL_vtbl_sigelem.svt_set; PL_vtbl_sigelem.svt_set = coro_sigelem_set;
		1749	orig_sigelem_clr = PL_vtbl_sigelem.svt_clear; PL_vtbl_sigelem.svt_clear = coro_sigelem_clr;
		1750
		1751	hv_sig = coro_get_hv (aTHX_ "SIG", TRUE);
		1752	rv_diehook = newRV_inc ((SV *)gv_fetchpv ("Coro::State::diehook" , 0, SVt_PVCV));
		1753	rv_warnhook = newRV_inc ((SV *)gv_fetchpv ("Coro::State::warnhook", 0, SVt_PVCV));
		1754
1162	coro_state_stash = gv_stashpv ("Coro::State", TRUE);	1755	coro_state_stash = gv_stashpv ("Coro::State", TRUE);
1163		1756
		1757	newCONSTSUB (coro_state_stash, "CC_TRACE" , newSViv (CC_TRACE));
		1758	newCONSTSUB (coro_state_stash, "CC_TRACE_SUB" , newSViv (CC_TRACE_SUB));
1164	newCONSTSUB (coro_state_stash, "SAVE_DEFAV", newSViv (CORO_SAVE_DEFAV));	1759	newCONSTSUB (coro_state_stash, "CC_TRACE_LINE", newSViv (CC_TRACE_LINE));
1165	newCONSTSUB (coro_state_stash, "SAVE_DEFSV", newSViv (CORO_SAVE_DEFSV));
1166	newCONSTSUB (coro_state_stash, "SAVE_ERRSV", newSViv (CORO_SAVE_ERRSV));
1167	newCONSTSUB (coro_state_stash, "SAVE_IRSSV", newSViv (CORO_SAVE_IRSSV));
1168	newCONSTSUB (coro_state_stash, "SAVE_ALL", newSViv (CORO_SAVE_ALL));	1760	newCONSTSUB (coro_state_stash, "CC_TRACE_ALL" , newSViv (CC_TRACE_ALL));
1169		1761
1170	main_mainstack = PL_mainstack;	1762	main_mainstack = PL_mainstack;
		1763	main_top_env = PL_top_env;
1171		1764
		1765	while (main_top_env->je_prev)
		1766	main_top_env = main_top_env->je_prev;
		1767
1172	coroapi.ver = CORO_API_VERSION;	1768	coroapi.ver = CORO_API_VERSION;
		1769	coroapi.rev = CORO_API_REVISION;
1173	coroapi.transfer = api_transfer;	1770	coroapi.transfer = api_transfer;
		1771
		1772	{
		1773	SV **svp = hv_fetch (PL_modglobal, "Time::NVtime", 12, 0);
		1774
		1775	if (!svp) croak ("Time::HiRes is required");
		1776	if (!SvIOK (*svp)) croak ("Time::NVtime isn't a function pointer");
		1777
		1778	nvtime = INT2PTR (double (*)(), SvIV (*svp));
		1779	}
1174		1780
1175	assert (("PRIO_NORMAL must be 0", !PRIO_NORMAL));	1781	assert (("PRIO_NORMAL must be 0", !PRIO_NORMAL));
1176	}	1782	}
1177		1783
1178	SV *	1784	SV *
1179	new (char *klass, ...)	1785	new (char *klass, ...)
1180	CODE:	1786	CODE:
1181	{	1787	{
1182	struct coro *coro;	1788	struct coro *coro;
		1789	MAGIC *mg;
1183	HV *hv;	1790	HV *hv;
1184	int i;	1791	int i;
1185		1792
1186	Newz (0, coro, 1, struct coro);	1793	Newz (0, coro, 1, struct coro);
1187	coro->args = newAV ();	1794	coro->args = newAV ();
1188	coro->save = CORO_SAVE_ALL;
1189	coro->flags = CF_NEW;	1795	coro->flags = CF_NEW;
1190		1796
		1797	if (coro_first) coro_first->prev = coro;
		1798	coro->next = coro_first;
		1799	coro_first = coro;
		1800
1191	hv = newHV ();	1801	coro->hv = hv = newHV ();
1192	sv_magicext ((SV *)hv, 0, PERL_MAGIC_ext, &coro_state_vtbl, (char *)coro, 0)->mg_flags |= MGf_DUP;	1802	mg = sv_magicext ((SV *)hv, 0, CORO_MAGIC_type_state, &coro_state_vtbl, (char *)coro, 0);
		1803	mg->mg_flags |= MGf_DUP;
1193	RETVAL = sv_bless (newRV_noinc ((SV *)hv), gv_stashpv (klass, 1));	1804	RETVAL = sv_bless (newRV_noinc ((SV *)hv), gv_stashpv (klass, 1));
1194		1805
		1806	av_extend (coro->args, items - 1);
1195	for (i = 1; i < items; i++)	1807	for (i = 1; i < items; i++)
1196	av_push (coro->args, newSVsv (ST (i)));	1808	av_push (coro->args, newSVsv (ST (i)));
1197	}	1809	}
1198	OUTPUT:	1810	OUTPUT:
1199	RETVAL	1811	RETVAL
1200		1812
1201	int	1813	# these not obviously related functions are all rolled into the same xs
1202	save (SV *coro, int new_save = -1)	1814	# function to increase chances that they all will call transfer with the same
1203	CODE:	1815	# stack offset
1204	RETVAL = api_save (coro, new_save);
1205	OUTPUT:
1206	RETVAL
1207
1208	void	1816	void
1209	_set_stacklevel (...)	1817	_set_stacklevel (...)
1210	ALIAS:	1818	ALIAS:
1211	Coro::State::transfer = 1	1819	Coro::State::transfer = 1
1212	Coro::schedule = 2	1820	Coro::schedule = 2
…		…
1214	Coro::cede_notself = 4	1822	Coro::cede_notself = 4
1215	CODE:	1823	CODE:
1216	{	1824	{
1217	struct transfer_args ta;	1825	struct transfer_args ta;
1218		1826
		1827	PUTBACK;
1219	switch (ix)	1828	switch (ix)
1220	{	1829	{
1221	case 0:	1830	case 0:
1222	ta.prev = (struct coro *)INT2PTR (coro_cctx *, SvIV (ST (0)));	1831	ta.prev = (struct coro *)INT2PTR (coro_cctx *, SvIV (ST (0)));
1223	ta.next = 0;	1832	ta.next = 0;
…		…
1242	if (!prepare_cede_notself (aTHX_ &ta))	1851	if (!prepare_cede_notself (aTHX_ &ta))
1243	XSRETURN_EMPTY;	1852	XSRETURN_EMPTY;
1244		1853
1245	break;	1854	break;
1246	}	1855	}
		1856	SPAGAIN;
1247		1857
1248	BARRIER;	1858	BARRIER;
		1859	PUTBACK;
1249	TRANSFER (ta);	1860	TRANSFER (ta, 0);
1250		1861	SPAGAIN; /* might be the sp of a different coroutine now */
1251	if (GIMME_V != G_VOID && ta.next != ta.prev)	1862	/* be extra careful not to ever do anything after TRANSFER */
1252	XSRETURN_YES;
1253	}	1863	}
1254		1864
1255	bool	1865	bool
1256	_destroy (SV *coro_sv)	1866	_destroy (SV *coro_sv)
1257	CODE:	1867	CODE:
1258	RETVAL = coro_state_destroy (aTHX_ SvSTATE (coro_sv));	1868	RETVAL = coro_state_destroy (aTHX_ SvSTATE (coro_sv));
1259	OUTPUT:	1869	OUTPUT:
1260	RETVAL	1870	RETVAL
1261		1871
1262	void	1872	void
1263	_exit (code)	1873	_exit (int code)
1264	int code
1265	PROTOTYPE: $	1874	PROTOTYPE: $
1266	CODE:	1875	CODE:
1267	_exit (code);	1876	_exit (code);
1268		1877
1269	int	1878	int
…		…
1287	CODE:	1896	CODE:
1288	RETVAL = cctx_idle;	1897	RETVAL = cctx_idle;
1289	OUTPUT:	1898	OUTPUT:
1290	RETVAL	1899	RETVAL
1291		1900
		1901	void
		1902	list ()
		1903	PPCODE:
		1904	{
		1905	struct coro *coro;
		1906	for (coro = coro_first; coro; coro = coro->next)
		1907	if (coro->hv)
		1908	XPUSHs (sv_2mortal (newRV_inc ((SV *)coro->hv)));
		1909	}
		1910
		1911	void
		1912	call (Coro::State coro, SV *coderef)
		1913	ALIAS:
		1914	eval = 1
		1915	CODE:
		1916	{
		1917	if (coro->mainstack && ((coro->flags & CF_RUNNING) || coro->slot))
		1918	{
		1919	struct coro temp;
		1920
		1921	if (!(coro->flags & CF_RUNNING))
		1922	{
		1923	PUTBACK;
		1924	save_perl (aTHX_ &temp);
		1925	load_perl (aTHX_ coro);
		1926	}
		1927
		1928	{
		1929	dSP;
		1930	ENTER;
		1931	SAVETMPS;
		1932	PUTBACK;
		1933	PUSHSTACK;
		1934	PUSHMARK (SP);
		1935
		1936	if (ix)
		1937	eval_sv (coderef, 0);
		1938	else
		1939	call_sv (coderef, G_KEEPERR | G_EVAL | G_VOID | G_DISCARD);
		1940
		1941	POPSTACK;
		1942	SPAGAIN;
		1943	FREETMPS;
		1944	LEAVE;
		1945	PUTBACK;
		1946	}
		1947
		1948	if (!(coro->flags & CF_RUNNING))
		1949	{
		1950	save_perl (aTHX_ coro);
		1951	load_perl (aTHX_ &temp);
		1952	SPAGAIN;
		1953	}
		1954	}
		1955	}
		1956
		1957	SV *
		1958	is_ready (Coro::State coro)
		1959	PROTOTYPE: $
		1960	ALIAS:
		1961	is_ready = CF_READY
		1962	is_running = CF_RUNNING
		1963	is_new = CF_NEW
		1964	is_destroyed = CF_DESTROYED
		1965	CODE:
		1966	RETVAL = boolSV (coro->flags & ix);
		1967	OUTPUT:
		1968	RETVAL
		1969
		1970	void
		1971	api_trace (SV *coro, int flags = CC_TRACE | CC_TRACE_SUB)
		1972
		1973	SV *
		1974	has_cctx (Coro::State coro)
		1975	PROTOTYPE: $
		1976	CODE:
		1977	RETVAL = boolSV (!!coro->cctx);
		1978	OUTPUT:
		1979	RETVAL
		1980
		1981	int
		1982	is_traced (Coro::State coro)
		1983	PROTOTYPE: $
		1984	CODE:
		1985	RETVAL = (coro->cctx ? coro->cctx->flags : 0) & CC_TRACE_ALL;
		1986	OUTPUT:
		1987	RETVAL
		1988
		1989	IV
		1990	rss (Coro::State coro)
		1991	PROTOTYPE: $
		1992	ALIAS:
		1993	usecount = 1
		1994	CODE:
		1995	switch (ix)
		1996	{
		1997	case 0: RETVAL = coro_rss (aTHX_ coro); break;
		1998	case 1: RETVAL = coro->usecount; break;
		1999	}
		2000	OUTPUT:
		2001	RETVAL
		2002
		2003	void
		2004	force_cctx ()
		2005	CODE:
		2006	struct coro *coro = SvSTATE (coro_current);
		2007	coro->cctx->idle_sp = 0;
		2008
		2009	void
		2010	throw (Coro::State self, SV *throw = &PL_sv_undef)
		2011	PROTOTYPE: $;$
		2012	CODE:
		2013	SvREFCNT_dec (self->throw);
		2014	self->throw = SvOK (throw) ? newSVsv (throw) : 0;
		2015
		2016	void
		2017	swap_defsv (Coro::State self)
		2018	PROTOTYPE: $
		2019	ALIAS:
		2020	swap_defav = 1
		2021	CODE:
		2022	if (!self->slot)
		2023	croak ("cannot swap state with coroutine that has no saved state");
		2024	else
		2025	{
		2026	SV **src = ix ? (SV **)&GvAV (PL_defgv) : &GvSV (PL_defgv);
		2027	SV **dst = ix ? (SV **)&self->slot->defav : (SV **)&self->slot->defsv;
		2028
		2029	SV *tmp = *src; *src = *dst; *dst = tmp;
		2030	}
		2031
1292	MODULE = Coro::State PACKAGE = Coro	2032	MODULE = Coro::State PACKAGE = Coro
1293		2033
1294	BOOT:	2034	BOOT:
1295	{	2035	{
1296	int i;	2036	int i;
1297		2037
		2038	av_async_pool = coro_get_av (aTHX_ "Coro::async_pool", TRUE);
		2039	sv_pool_rss = coro_get_sv (aTHX_ "Coro::POOL_RSS" , TRUE);
		2040	sv_pool_size = coro_get_sv (aTHX_ "Coro::POOL_SIZE" , TRUE);
		2041
		2042	coro_current = coro_get_sv (aTHX_ "Coro::current", FALSE);
		2043	SvREADONLY_on (coro_current);
		2044
1298	coro_stash = gv_stashpv ("Coro", TRUE);	2045	coro_stash = gv_stashpv ("Coro", TRUE);
1299		2046
1300	newCONSTSUB (coro_stash, "PRIO_MAX", newSViv (PRIO_MAX));	2047	newCONSTSUB (coro_stash, "PRIO_MAX", newSViv (PRIO_MAX));
1301	newCONSTSUB (coro_stash, "PRIO_HIGH", newSViv (PRIO_HIGH));	2048	newCONSTSUB (coro_stash, "PRIO_HIGH", newSViv (PRIO_HIGH));
1302	newCONSTSUB (coro_stash, "PRIO_NORMAL", newSViv (PRIO_NORMAL));	2049	newCONSTSUB (coro_stash, "PRIO_NORMAL", newSViv (PRIO_NORMAL));
1303	newCONSTSUB (coro_stash, "PRIO_LOW", newSViv (PRIO_LOW));	2050	newCONSTSUB (coro_stash, "PRIO_LOW", newSViv (PRIO_LOW));
1304	newCONSTSUB (coro_stash, "PRIO_IDLE", newSViv (PRIO_IDLE));	2051	newCONSTSUB (coro_stash, "PRIO_IDLE", newSViv (PRIO_IDLE));
1305	newCONSTSUB (coro_stash, "PRIO_MIN", newSViv (PRIO_MIN));	2052	newCONSTSUB (coro_stash, "PRIO_MIN", newSViv (PRIO_MIN));
1306		2053
1307	coro_current = get_sv ("Coro::current", FALSE);
1308	SvREADONLY_on (coro_current);
1309
1310	for (i = PRIO_MAX - PRIO_MIN + 1; i--; )	2054	for (i = PRIO_MAX - PRIO_MIN + 1; i--; )
1311	coro_ready[i] = newAV ();	2055	coro_ready[i] = newAV ();
1312		2056
1313	{	2057	{
1314	SV *sv = perl_get_sv("Coro::API", 1);	2058	SV *sv = perl_get_sv ("Coro::API", TRUE);
		2059	perl_get_sv ("Coro::API", TRUE); /* silence 5.10 warning */
1315		2060
1316	coroapi.schedule = api_schedule;	2061	coroapi.schedule = api_schedule;
1317	coroapi.save = api_save;
1318	coroapi.cede = api_cede;	2062	coroapi.cede = api_cede;
1319	coroapi.cede_notself = api_cede_notself;	2063	coroapi.cede_notself = api_cede_notself;
1320	coroapi.ready = api_ready;	2064	coroapi.ready = api_ready;
1321	coroapi.is_ready = api_is_ready;	2065	coroapi.is_ready = api_is_ready;
1322	coroapi.nready = &coro_nready;	2066	coroapi.nready = &coro_nready;
…		…
1331	void	2075	void
1332	_set_current (SV *current)	2076	_set_current (SV *current)
1333	PROTOTYPE: $	2077	PROTOTYPE: $
1334	CODE:	2078	CODE:
1335	SvREFCNT_dec (SvRV (coro_current));	2079	SvREFCNT_dec (SvRV (coro_current));
1336	SvRV_set (coro_current, SvREFCNT_inc (SvRV (current)));	2080	SvRV_set (coro_current, SvREFCNT_inc_NN (SvRV (current)));
		2081
		2082	void
		2083	_set_readyhook (SV *hook)
		2084	PROTOTYPE: $
		2085	CODE:
		2086	LOCK;
		2087	SvREFCNT_dec (coro_readyhook);
		2088	coro_readyhook = SvOK (hook) ? newSVsv (hook) : 0;
		2089	UNLOCK;
1337		2090
1338	int	2091	int
1339	prio (Coro::State coro, int newprio = 0)	2092	prio (Coro::State coro, int newprio = 0)
1340	ALIAS:	2093	ALIAS:
1341	nice = 1	2094	nice = 1
…		…
1363	CODE:	2116	CODE:
1364	RETVAL = boolSV (api_ready (self));	2117	RETVAL = boolSV (api_ready (self));
1365	OUTPUT:	2118	OUTPUT:
1366	RETVAL	2119	RETVAL
1367		2120
1368	SV *
1369	is_ready (SV *self)
1370	PROTOTYPE: $
1371	CODE:
1372	RETVAL = boolSV (api_is_ready (self));
1373	OUTPUT:
1374	RETVAL
1375
1376	int	2121	int
1377	nready (...)	2122	nready (...)
1378	PROTOTYPE:	2123	PROTOTYPE:
1379	CODE:	2124	CODE:
1380	RETVAL = coro_nready;	2125	RETVAL = coro_nready;
1381	OUTPUT:	2126	OUTPUT:
1382	RETVAL	2127	RETVAL
1383		2128
		2129	# for async_pool speedup
		2130	void
		2131	_pool_1 (SV *cb)
		2132	CODE:
		2133	{
		2134	struct coro *coro = SvSTATE (coro_current);
		2135	HV *hv = (HV *)SvRV (coro_current);
		2136	AV *defav = GvAV (PL_defgv);
		2137	SV *invoke = hv_delete (hv, "_invoke", sizeof ("_invoke") - 1, 0);
		2138	AV *invoke_av;
		2139	int i, len;
		2140
		2141	if (!invoke)
		2142	{
		2143	SV *old = PL_diehook;
		2144	PL_diehook = 0;
		2145	SvREFCNT_dec (old);
		2146	croak ("\3async_pool terminate\2\n");
		2147	}
		2148
		2149	SvREFCNT_dec (coro->saved_deffh);
		2150	coro->saved_deffh = SvREFCNT_inc_NN ((SV *)PL_defoutgv);
		2151
		2152	hv_store (hv, "desc", sizeof ("desc") - 1,
		2153	newSVpvn ("[async_pool]", sizeof ("[async_pool]") - 1), 0);
		2154
		2155	invoke_av = (AV *)SvRV (invoke);
		2156	len = av_len (invoke_av);
		2157
		2158	sv_setsv (cb, AvARRAY (invoke_av)[0]);
		2159
		2160	if (len > 0)
		2161	{
		2162	av_fill (defav, len - 1);
		2163	for (i = 0; i < len; ++i)
		2164	av_store (defav, i, SvREFCNT_inc_NN (AvARRAY (invoke_av)[i + 1]));
		2165	}
		2166
		2167	SvREFCNT_dec (invoke);
		2168	}
		2169
		2170	void
		2171	_pool_2 (SV *cb)
		2172	CODE:
		2173	{
		2174	struct coro *coro = SvSTATE (coro_current);
		2175
		2176	sv_setsv (cb, &PL_sv_undef);
		2177
		2178	SvREFCNT_dec ((SV *)PL_defoutgv); PL_defoutgv = (GV *)coro->saved_deffh;
		2179	coro->saved_deffh = 0;
		2180
		2181	if (coro_rss (aTHX_ coro) > SvIV (sv_pool_rss)
		2182	|| av_len (av_async_pool) + 1 >= SvIV (sv_pool_size))
		2183	{
		2184	SV *old = PL_diehook;
		2185	PL_diehook = 0;
		2186	SvREFCNT_dec (old);
		2187	croak ("\3async_pool terminate\2\n");
		2188	}
		2189
		2190	av_clear (GvAV (PL_defgv));
		2191	hv_store ((HV *)SvRV (coro_current), "desc", sizeof ("desc") - 1,
		2192	newSVpvn ("[async_pool idle]", sizeof ("[async_pool idle]") - 1), 0);
		2193
		2194	coro->prio = 0;
		2195
		2196	if (coro->cctx && (coro->cctx->flags & CC_TRACE))
		2197	api_trace (coro_current, 0);
		2198
		2199	av_push (av_async_pool, newSVsv (coro_current));
		2200	}
		2201
		2202	#if 0
		2203
		2204	void
		2205	_generator_call (...)
		2206	PROTOTYPE: @
		2207	PPCODE:
		2208	fprintf (stderr, "call %p\n", CvXSUBANY(cv).any_ptr);
		2209	xxxx
		2210	abort ();
		2211
		2212	SV *
		2213	gensub (SV *sub, ...)
		2214	PROTOTYPE: &;@
		2215	CODE:
		2216	{
		2217	struct coro *coro;
		2218	MAGIC *mg;
		2219	CV *xcv;
		2220	CV *ncv = (CV *)newSV_type (SVt_PVCV);
		2221	int i;
		2222
		2223	CvGV (ncv) = CvGV (cv);
		2224	CvFILE (ncv) = CvFILE (cv);
		2225
		2226	Newz (0, coro, 1, struct coro);
		2227	coro->args = newAV ();
		2228	coro->flags = CF_NEW;
		2229
		2230	av_extend (coro->args, items - 1);
		2231	for (i = 1; i < items; i++)
		2232	av_push (coro->args, newSVsv (ST (i)));
		2233
		2234	CvISXSUB_on (ncv);
		2235	CvXSUBANY (ncv).any_ptr = (void *)coro;
		2236
		2237	xcv = GvCV (gv_fetchpv ("Coro::_generator_call", 0, SVt_PVCV));
		2238
		2239	CvXSUB (ncv) = CvXSUB (xcv);
		2240	CvANON_on (ncv);
		2241
		2242	mg = sv_magicext ((SV *)ncv, 0, CORO_MAGIC_type_state, &coro_gensub_vtbl, (char *)coro, 0);
		2243	RETVAL = newRV_noinc ((SV *)ncv);
		2244	}
		2245	OUTPUT:
		2246	RETVAL
		2247
		2248	#endif
		2249
		2250
1384	MODULE = Coro::State PACKAGE = Coro::AIO	2251	MODULE = Coro::State PACKAGE = Coro::AIO
1385		2252
1386	SV *	2253	void
1387	_get_state ()	2254	_get_state (SV *self)
1388	CODE:	2255	PPCODE:
1389	{	2256	{
1390	struct io_state *data;	2257	AV *defav = GvAV (PL_defgv);
1391		2258	AV *av = newAV ();
		2259	int i;
1392	RETVAL = newSV (sizeof (struct io_state));	2260	SV *data_sv = newSV (sizeof (struct io_state));
1393	data = (struct io_state *)SvPVX (RETVAL);	2261	struct io_state *data = (struct io_state *)SvPVX (data_sv);
1394	SvCUR_set (RETVAL, sizeof (struct io_state));	2262	SvCUR_set (data_sv, sizeof (struct io_state));
1395	SvPOK_only (RETVAL);	2263	SvPOK_only (data_sv);
1396		2264
1397	data->errorno = errno;	2265	data->errorno = errno;
1398	data->laststype = PL_laststype;	2266	data->laststype = PL_laststype;
1399	data->laststatval = PL_laststatval;	2267	data->laststatval = PL_laststatval;
1400	data->statcache = PL_statcache;	2268	data->statcache = PL_statcache;
		2269
		2270	av_extend (av, AvFILLp (defav) + 1 + 1);
		2271
		2272	for (i = 0; i <= AvFILLp (defav); ++i)
		2273	av_push (av, SvREFCNT_inc_NN (AvARRAY (defav)[i]));
		2274
		2275	av_push (av, data_sv);
		2276
		2277	XPUSHs (sv_2mortal (newRV_noinc ((SV *)av)));
		2278
		2279	api_ready (self);
1401	}	2280	}
1402	OUTPUT:
1403	RETVAL
1404		2281
1405	void	2282	void
1406	_set_state (char *data_)	2283	_set_state (SV *state)
1407	PROTOTYPE: $	2284	PROTOTYPE: $
1408	CODE:	2285	PPCODE:
1409	{	2286	{
1410	struct io_state *data = (void *)data_;	2287	AV *av = (AV *)SvRV (state);
		2288	struct io_state *data = (struct io_state *)SvPVX (AvARRAY (av)[AvFILLp (av)]);
		2289	int i;
1411		2290
1412	errno = data->errorno;	2291	errno = data->errorno;
1413	PL_laststype = data->laststype;	2292	PL_laststype = data->laststype;
1414	PL_laststatval = data->laststatval;	2293	PL_laststatval = data->laststatval;
1415	PL_statcache = data->statcache;	2294	PL_statcache = data->statcache;
1416	}
1417		2295
		2296	EXTEND (SP, AvFILLp (av));
		2297	for (i = 0; i < AvFILLp (av); ++i)
		2298	PUSHs (sv_2mortal (SvREFCNT_inc_NN (AvARRAY (av)[i])));
		2299	}
		2300
		2301
		2302	MODULE = Coro::State PACKAGE = Coro::AnyEvent
		2303
		2304	BOOT:
		2305	sv_activity = coro_get_sv (aTHX_ "Coro::AnyEvent::ACTIVITY", TRUE);
		2306
		2307	SV *
		2308	_schedule (...)
		2309	PROTOTYPE: @
		2310	CODE:
		2311	{
		2312	static int incede;
		2313
		2314	api_cede_notself ();
		2315
		2316	++incede;
		2317	while (coro_nready >= incede && api_cede ())
		2318	;
		2319
		2320	sv_setsv (sv_activity, &PL_sv_undef);
		2321	if (coro_nready >= incede)
		2322	{
		2323	PUSHMARK (SP);
		2324	PUTBACK;
		2325	call_pv ("Coro::AnyEvent::_activity", G_DISCARD | G_EVAL);
		2326	SPAGAIN;
		2327	}
		2328
		2329	--incede;
		2330	}
		2331
		2332
		2333	MODULE = Coro::State PACKAGE = PerlIO::cede
		2334
		2335	BOOT:
		2336	PerlIO_define_layer (aTHX_ &PerlIO_cede);

Diff Legend

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