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

Comparing Coro/Coro/State.xs (file contents):
Revision 1.155 by root, Fri Sep 21 01:09:36 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 */
134	static JMPENV *main_top_env;	168	static JMPENV *main_top_env;
135	static HV coro_state_stash, coro_stash;	169	static HV coro_state_stash, coro_stash;
136	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;
137		185
138	static struct coro_cctx *cctx_first;	186	static struct coro_cctx *cctx_first;
139	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	};
140		197
141	/* this is a structure representing a c-level coroutine */	198	/* this is a structure representing a c-level coroutine */
142	typedef struct coro_cctx {	199	typedef struct coro_cctx {
143	struct coro_cctx *next;	200	struct coro_cctx *next;
144		201
…		…
153	coro_context cctx;	210	coro_context cctx;
154		211
155	#if CORO_USE_VALGRIND	212	#if CORO_USE_VALGRIND
156	int valgrind_id;	213	int valgrind_id;
157	#endif	214	#endif
158	char inuse, mapped;	215	unsigned char flags;
159	} coro_cctx;	216	} coro_cctx;
160		217
161	enum {	218	enum {
162	CF_RUNNING = 0x0001, /* coroutine is running */	219	CF_RUNNING = 0x0001, /* coroutine is running */
163	CF_READY = 0x0002, /* coroutine is ready */	220	CF_READY = 0x0002, /* coroutine is ready */
164	CF_NEW = 0x0004, /* has never been switched to */	221	CF_NEW = 0x0004, /* has never been switched to */
165	CF_DESTROYED = 0x0008, /* coroutine data has been freed */	222	CF_DESTROYED = 0x0008, /* coroutine data has been freed */
166	};	223	};
167		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
168	/* this is a structure representing a perl-level coroutine */	238	/* this is a structure representing a perl-level coroutine */
169	struct coro {	239	struct coro {
170	/* the c coroutine allocated to this perl coroutine, if any */	240	/* the c coroutine allocated to this perl coroutine, if any */
171	coro_cctx *cctx;	241	coro_cctx *cctx;
172		242
		243	/* process data */
		244	AV *mainstack;
		245	perl_slots slot; / basically the saved sp */
		246
173	/* data associated with this coroutine (initial args) */	247	AV args; / data associated with this coroutine (initial args) */
174	AV *args;	248	int refcnt; /* coroutines are refcounted, yes */
175	int refcnt;
176	int save; /* CORO_SAVE flags */
177	int flags; /* CF_ flags */	249	int flags; /* CF_ flags */
		250	HV hv; / the perl hash associated with this coro, if any */
178		251
179	/* optionally saved, might be zero */	252	/* statistics */
180	AV defav; / @_ */	253	int usecount; /* number of transfers to this coro */
181	SV defsv; / $_ */
182	SV errsv; / $@ */
183	GV deffh; / default filehandle */
184	SV irssv; / $/ */
185	SV irssv_sv; / real $/ cache */
186
187	#define VAR(name,type) type name;
188	# include "state.h"
189	#undef VAR
190		254
191	/* coro process data */	255	/* coro process data */
192	int prio;	256	int prio;
		257	SV throw; / exception to be thrown */
		258
		259	/* async_pool */
		260	SV *saved_deffh;
193		261
194	/* linked list */	262	/* linked list */
195	struct coro next, prev;	263	struct coro next, prev;
196	HV hv; / the perl hash associated with this coro, if any */
197	};	264	};
198		265
199	typedef struct coro *Coro__State;	266	typedef struct coro *Coro__State;
200	typedef struct coro *Coro__State_or_hashref;	267	typedef struct coro *Coro__State_or_hashref;
201		268
…		…
208	#define PRIO_IDLE -3	275	#define PRIO_IDLE -3
209	#define PRIO_MIN -4	276	#define PRIO_MIN -4
210		277
211	/* for Coro.pm */	278	/* for Coro.pm */
212	static SV *coro_current;	279	static SV *coro_current;
		280	static SV *coro_readyhook;
213	static AV *coro_ready [PRIO_MAX-PRIO_MIN+1];	281	static AV *coro_ready [PRIO_MAX-PRIO_MIN+1];
214	static int coro_nready;	282	static int coro_nready;
215	static struct coro *coro_first;	283	static struct coro *coro_first;
216		284
217	/ lowlevel stuff ********************************************************/	285	/ lowlevel stuff ********************************************************/
218		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	}
		316
219	static AV *	317	static AV *
220	coro_clone_padlist (pTHX_ CV *cv)	318	coro_clone_padlist (pTHX_ CV *cv)
221	{	319	{
222	AV *padlist = CvPADLIST (cv);	320	AV *padlist = CvPADLIST (cv);
223	AV newpadlist, newpad;	321	AV newpadlist, newpad;
224		322
225	newpadlist = newAV ();	323	newpadlist = newAV ();
226	AvREAL_off (newpadlist);	324	AvREAL_off (newpadlist);
227	#if PERL_VERSION_ATLEAST (5,9,0)	325	#if PERL_VERSION_ATLEAST (5,10,0)
228	Perl_pad_push (aTHX_ padlist, AvFILLp (padlist) + 1);	326	Perl_pad_push (aTHX_ padlist, AvFILLp (padlist) + 1);
229	#else	327	#else
230	Perl_pad_push (aTHX_ padlist, AvFILLp (padlist) + 1, 1);	328	Perl_pad_push (aTHX_ padlist, AvFILLp (padlist) + 1, 1);
231	#endif	329	#endif
232	newpad = (AV *)AvARRAY (padlist)[AvFILLp (padlist)];	330	newpad = (AV *)AvARRAY (padlist)[AvFILLp (padlist)];
233	--AvFILLp (padlist);	331	--AvFILLp (padlist);
234		332
235	av_store (newpadlist, 0, SvREFCNT_inc (*av_fetch (padlist, 0, FALSE)));	333	av_store (newpadlist, 0, SvREFCNT_inc_NN (*av_fetch (padlist, 0, FALSE)));
236	av_store (newpadlist, 1, (SV *)newpad);	334	av_store (newpadlist, 1, (SV *)newpad);
237		335
238	return newpadlist;	336	return newpadlist;
239	}	337	}
240		338
…		…
270		368
271	/* casting is fun. */	369	/* casting is fun. */
272	while (&PL_sv_undef != (SV )(padlist = (AV )av_pop (av)))	370	while (&PL_sv_undef != (SV )(padlist = (AV )av_pop (av)))
273	free_padlist (aTHX_ padlist);	371	free_padlist (aTHX_ padlist);
274		372
275	SvREFCNT_dec (av);	373	SvREFCNT_dec (av); /* sv_magicext increased the refcount */
276		374
277	return 0;	375	return 0;
278	}	376	}
279		377
280	#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
281		380
282	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	};
283		385
284	#define CORO_MAGIC(cv) \	386	#define CORO_MAGIC(sv,type) \
285	SvMAGIC (cv) \	387	SvMAGIC (sv) \
286	? SvMAGIC (cv)->mg_type == PERL_MAGIC_coro \	388	? SvMAGIC (sv)->mg_type == type \
287	? SvMAGIC (cv) \	389	? SvMAGIC (sv) \
288	: mg_find ((SV *)cv, PERL_MAGIC_coro) \	390	: mg_find (sv, type) \
289	: 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))
290		421
291	/* the next two functions merely cache the padlists */	422	/* the next two functions merely cache the padlists */
292	static void	423	static void
293	get_padlist (pTHX_ CV *cv)	424	get_padlist (pTHX_ CV *cv)
294	{	425	{
295	MAGIC *mg = CORO_MAGIC (cv);	426	MAGIC *mg = CORO_MAGIC_cv (cv);
296	AV *av;	427	AV *av;
297		428
298	if (mg && AvFILLp ((av = (AV *)mg->mg_obj)) >= 0)	429	if (expect_true (mg && AvFILLp ((av = (AV *)mg->mg_obj)) >= 0))
299	CvPADLIST (cv) = (AV *)AvARRAY (av)[AvFILLp (av)--];	430	CvPADLIST (cv) = (AV *)AvARRAY (av)[AvFILLp (av)--];
300	else	431	else
301	{	432	{
302	#if CORO_PREFER_PERL_FUNCTIONS	433	#if CORO_PREFER_PERL_FUNCTIONS
303	/* this is probably cleaner, but also slower? */	434	/* this is probably cleaner? but also slower! */
		435	/* in practise, it seems to be less stable */
304	CV *cp = Perl_cv_clone (cv);	436	CV *cp = Perl_cv_clone (cv);
305	CvPADLIST (cv) = CvPADLIST (cp);	437	CvPADLIST (cv) = CvPADLIST (cp);
306	CvPADLIST (cp) = 0;	438	CvPADLIST (cp) = 0;
307	SvREFCNT_dec (cp);	439	SvREFCNT_dec (cp);
308	#else	440	#else
…		…
312	}	444	}
313		445
314	static void	446	static void
315	put_padlist (pTHX_ CV *cv)	447	put_padlist (pTHX_ CV *cv)
316	{	448	{
317	MAGIC *mg = CORO_MAGIC (cv);	449	MAGIC *mg = CORO_MAGIC_cv (cv);
318	AV *av;	450	AV *av;
319		451
320	if (!mg)	452	if (expect_false (!mg))
321	{	453	mg = sv_magicext ((SV )cv, (SV )newAV (), CORO_MAGIC_type_cv, &coro_cv_vtbl, 0, 0);
322	sv_magic ((SV *)cv, 0, PERL_MAGIC_coro, 0, 0);
323	mg = mg_find ((SV *)cv, PERL_MAGIC_coro);
324	mg->mg_virtual = &vtbl_coro;
325	mg->mg_obj = (SV *)newAV ();
326	}
327		454
328	av = (AV *)mg->mg_obj;	455	av = (AV *)mg->mg_obj;
329		456
330	if (AvFILLp (av) >= AvMAX (av))	457	if (expect_false (AvFILLp (av) >= AvMAX (av)))
331	av_extend (av, AvMAX (av) + 1);	458	av_extend (av, AvMAX (av) + 1);
332		459
333	AvARRAY (av)[++AvFILLp (av)] = (SV *)CvPADLIST (cv);	460	AvARRAY (av)[++AvFILLp (av)] = (SV *)CvPADLIST (cv);
334	}	461	}
335		462
336	/ load & save, init *****************************************************/	463	/ load & save, init *****************************************************/
337
338	#define SB do {
339	#define SE } while (0)
340
341	#define REPLACE_SV(sv,val) SB SvREFCNT_dec (sv); (sv) = (val); (val) = 0; SE
342		464
343	static void	465	static void
344	load_perl (pTHX_ Coro__State c)	466	load_perl (pTHX_ Coro__State c)
345	{	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
346	#define VAR(name,type) PL_ ## name = c->name;	478	#define VAR(name,type) PL_ ## name = slot->name;
347	# include "state.h"	479	# include "state.h"
348	#undef VAR	480	#undef VAR
349
350	if (c->defav) REPLACE_SV (GvAV (PL_defgv), c->defav);
351	if (c->defsv) REPLACE_SV (DEFSV , c->defsv);
352	if (c->errsv) REPLACE_SV (ERRSV , c->errsv);
353	if (c->deffh) REPLACE_SV (PL_defoutgv , c->deffh);
354
355	if (c->irssv)
356	{
357	if (c->irssv == PL_rs \|\| sv_eq (PL_rs, c->irssv))
358	{
359	SvREFCNT_dec (c->irssv);
360	c->irssv = 0;
361	}
362	else
363	{
364	REPLACE_SV (PL_rs, c->irssv);
365	if (!c->irssv_sv) c->irssv_sv = get_sv ("/", 0);
366	sv_setsv (c->irssv_sv, PL_rs);
367	}
368	}
369		481
370	{	482	{
371	dSP;	483	dSP;
		484
372	CV *cv;	485	CV *cv;
373		486
374	/* now do the ugly restore mess */	487	/* now do the ugly restore mess */
375	while ((cv = (CV *)POPs))	488	while (expect_true (cv = (CV *)POPs))
376	{	489	{
377	put_padlist (aTHX_ cv); /* mark this padlist as available */	490	put_padlist (aTHX_ cv); /* mark this padlist as available */
378	CvDEPTH (cv) = PTR2IV (POPs);	491	CvDEPTH (cv) = PTR2IV (POPs);
379	CvPADLIST (cv) = (AV *)POPs;	492	CvPADLIST (cv) = (AV *)POPs;
380	}	493	}
…		…
395	/*	508	/*
396	* 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
397	* (and reinitialize) all cv's in the whole callchain :(	510	* (and reinitialize) all cv's in the whole callchain :(
398	*/	511	*/
399		512
400	EXTEND (SP, 3 + 1);
401	PUSHs (Nullsv);	513	XPUSHs (Nullsv);
402	/* this loop was inspired by pp_caller */	514	/* this loop was inspired by pp_caller */
403	for (;;)	515	for (;;)
404	{	516	{
405	while (cxix >= 0)	517	while (expect_true (cxix >= 0))
406	{	518	{
407	PERL_CONTEXT *cx = &ccstk[cxix--];	519	PERL_CONTEXT *cx = &ccstk[cxix--];
408		520
409	if (CxTYPE (cx) == CXt_SUB \|\| CxTYPE (cx) == CXt_FORMAT)	521	if (expect_true (CxTYPE (cx) == CXt_SUB \|\| CxTYPE (cx) == CXt_FORMAT))
410	{	522	{
411	CV *cv = cx->blk_sub.cv;	523	CV *cv = cx->blk_sub.cv;
412		524
413	if (CvDEPTH (cv))	525	if (expect_true (CvDEPTH (cv)))
414	{	526	{
415	EXTEND (SP, 3);	527	EXTEND (SP, 3);
416	PUSHs ((SV *)CvPADLIST (cv));	528	PUSHs ((SV *)CvPADLIST (cv));
417	PUSHs (INT2PTR (SV *, CvDEPTH (cv)));	529	PUSHs (INT2PTR (SV *, (IV)CvDEPTH (cv)));
418	PUSHs ((SV *)cv);	530	PUSHs ((SV *)cv);
419		531
420	CvDEPTH (cv) = 0;	532	CvDEPTH (cv) = 0;
421	get_padlist (aTHX_ cv);	533	get_padlist (aTHX_ cv);
422	}	534	}
423	}	535	}
424	}	536	}
425		537
426	if (top_si->si_type == PERLSI_MAIN)	538	if (expect_true (top_si->si_type == PERLSI_MAIN))
427	break;	539	break;
428		540
429	top_si = top_si->si_prev;	541	top_si = top_si->si_prev;
430	ccstk = top_si->si_cxstack;	542	ccstk = top_si->si_cxstack;
431	cxix = top_si->si_cxix;	543	cxix = top_si->si_cxix;
432	}	544	}
433		545
434	PUTBACK;	546	PUTBACK;
435	}	547	}
436		548
437	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 */
438	c->defsv = c->save & CORO_SAVE_DEFSV ? SvREFCNT_inc (DEFSV) : 0;	550	/* we manually unroll here, as usually 2 slots is enough */
439	c->errsv = c->save & CORO_SAVE_ERRSV ? SvREFCNT_inc (ERRSV) : 0;	551	if (SLOT_COUNT >= 1) CXINC;
440	c->deffh = c->save & CORO_SAVE_DEFFH ? (GV *)SvREFCNT_inc (PL_defoutgv) : 0;	552	if (SLOT_COUNT >= 2) CXINC;
441	c->irssv = c->save & CORO_SAVE_IRSSV ? SvREFCNT_inc (PL_rs) : 0;	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 */
442		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
443	#define VAR(name,type)c->name = PL_ ## name;	571	#define VAR(name,type) slot->name = PL_ ## name;
444	# include "state.h"	572	# include "state.h"
445	#undef VAR	573	#undef VAR
		574	}
446	}	575	}
447		576
448	/*	577	/*
449	* allocate various perl stacks. This is an exact copy	578	* allocate various perl stacks. This is an exact copy
450	* of perl.c:init_stacks, except that it uses less memory	579	* of perl.c:init_stacks, except that it uses less memory
…		…
455	# define coro_init_stacks init_stacks	584	# define coro_init_stacks init_stacks
456	#else	585	#else
457	static void	586	static void
458	coro_init_stacks (pTHX)	587	coro_init_stacks (pTHX)
459	{	588	{
460	PL_curstackinfo = new_stackinfo(64, 4);	589	PL_curstackinfo = new_stackinfo(32, 8);
461	PL_curstackinfo->si_type = PERLSI_MAIN;	590	PL_curstackinfo->si_type = PERLSI_MAIN;
462	PL_curstack = PL_curstackinfo->si_stack;	591	PL_curstack = PL_curstackinfo->si_stack;
463	PL_mainstack = PL_curstack; /* remember in case we switch stacks */	592	PL_mainstack = PL_curstack; /* remember in case we switch stacks */
464		593
465	PL_stack_base = AvARRAY(PL_curstack);	594	PL_stack_base = AvARRAY(PL_curstack);
466	PL_stack_sp = PL_stack_base;	595	PL_stack_sp = PL_stack_base;
467	PL_stack_max = PL_stack_base + AvMAX(PL_curstack);	596	PL_stack_max = PL_stack_base + AvMAX(PL_curstack);
468		597
469	New(50,PL_tmps_stack,64,SV*);	598	New(50,PL_tmps_stack,32,SV*);
470	PL_tmps_floor = -1;	599	PL_tmps_floor = -1;
471	PL_tmps_ix = -1;	600	PL_tmps_ix = -1;
472	PL_tmps_max = 64;	601	PL_tmps_max = 32;
473		602
474	New(54,PL_markstack,16,I32);	603	New(54,PL_markstack,16,I32);
475	PL_markstack_ptr = PL_markstack;	604	PL_markstack_ptr = PL_markstack;
476	PL_markstack_max = PL_markstack + 16;	605	PL_markstack_max = PL_markstack + 16;
477		606
478	#ifdef SET_MARK_OFFSET	607	#ifdef SET_MARK_OFFSET
479	SET_MARK_OFFSET;	608	SET_MARK_OFFSET;
480	#endif	609	#endif
481		610
482	New(54,PL_scopestack,16,I32);	611	New(54,PL_scopestack,8,I32);
483	PL_scopestack_ix = 0;	612	PL_scopestack_ix = 0;
484	PL_scopestack_max = 16;	613	PL_scopestack_max = 8;
485		614
486	New(54,PL_savestack,64,ANY);	615	New(54,PL_savestack,24,ANY);
487	PL_savestack_ix = 0;	616	PL_savestack_ix = 0;
488	PL_savestack_max = 64;	617	PL_savestack_max = 24;
489		618
490	#if !PERL_VERSION_ATLEAST (5,9,0)	619	#if !PERL_VERSION_ATLEAST (5,10,0)
491	New(54,PL_retstack,8,OP*);	620	New(54,PL_retstack,4,OP*);
492	PL_retstack_ix = 0;	621	PL_retstack_ix = 0;
493	PL_retstack_max = 8;	622	PL_retstack_max = 4;
494	#endif	623	#endif
495	}	624	}
496	#endif	625	#endif
497		626
498	/*	627	/*
499	* destroy the stacks, the callchain etc...	628	* destroy the stacks, the callchain etc...
500	*/	629	*/
501	static void	630	static void
502	coro_destroy_stacks (pTHX)	631	coro_destroy_stacks (pTHX)
503	{	632	{
504	if (!IN_DESTRUCT)
505	{
506	/* restore all saved variables and stuff */
507	LEAVE_SCOPE (0);
508	assert (PL_tmps_floor == -1);
509
510	/* free all temporaries */
511	FREETMPS;
512	assert (PL_tmps_ix == -1);
513
514	/* unwind all extra stacks */
515	POPSTACK_TO (PL_mainstack);
516
517	/* unwind main stack */
518	dounwind (-1);
519	}
520
521	while (PL_curstackinfo->si_next)	633	while (PL_curstackinfo->si_next)
522	PL_curstackinfo = PL_curstackinfo->si_next;	634	PL_curstackinfo = PL_curstackinfo->si_next;
523		635
524	while (PL_curstackinfo)	636	while (PL_curstackinfo)
525	{	637	{
…		…
535		647
536	Safefree (PL_tmps_stack);	648	Safefree (PL_tmps_stack);
537	Safefree (PL_markstack);	649	Safefree (PL_markstack);
538	Safefree (PL_scopestack);	650	Safefree (PL_scopestack);
539	Safefree (PL_savestack);	651	Safefree (PL_savestack);
540	#if !PERL_VERSION_ATLEAST (5,9,0)	652	#if !PERL_VERSION_ATLEAST (5,10,0)
541	Safefree (PL_retstack);	653	Safefree (PL_retstack);
542	#endif	654	#endif
543	}	655	}
544		656
545	static size_t	657	static size_t
546	coro_rss (struct coro *coro)	658	coro_rss (pTHX_ struct coro *coro)
547	{	659	{
548	size_t rss = sizeof (coro);	660	size_t rss = sizeof (*coro);
549		661
550	if (coro->mainstack)	662	if (coro->mainstack)
551	{	663	{
		664	perl_slots tmp_slot;
		665	perl_slots *slot;
		666
552	if (coro->flags & CF_RUNNING)	667	if (coro->flags & CF_RUNNING)
553	{	668	{
		669	slot = &tmp_slot;
		670
554	#define VAR(name,type)coro->name = PL_ ## name;	671	#define VAR(name,type) slot->name = PL_ ## name;
555	# include "state.h"	672	# include "state.h"
556	#undef VAR	673	#undef VAR
557	}	674	}
		675	else
		676	slot = coro->slot;
558		677
		678	if (slot)
		679	{
559	rss += sizeof (coro->curstackinfo);	680	rss += sizeof (slot->curstackinfo);
560	rss += sizeof (struct xpvav) + (1 + AvFILL (coro->curstackinfo->si_stack)) * sizeof (SV *);
561	rss += (coro->curstackinfo->si_cxmax + 1) * sizeof (PERL_CONTEXT);	681	rss += (slot->curstackinfo->si_cxmax + 1) * sizeof (PERL_CONTEXT);
562	rss += sizeof (struct xpvav) + (1 + AvFILL (coro->curstack)) * sizeof (SV *);	682	rss += sizeof (SV) + sizeof (struct xpvav) + (1 + AvMAX (slot->curstack)) * sizeof (SV *);
563	rss += coro->tmps_max * sizeof (SV *);	683	rss += slot->tmps_max * sizeof (SV *);
564	rss += (coro->markstack_max - coro->markstack_ptr) * sizeof (I32);	684	rss += (slot->markstack_max - slot->markstack_ptr) * sizeof (I32);
565	rss += coro->scopestack_max * sizeof (I32);	685	rss += slot->scopestack_max * sizeof (I32);
566	rss += coro->savestack_max * sizeof (ANY);	686	rss += slot->savestack_max * sizeof (ANY);
567		687
568	#if !PERL_VERSION_ATLEAST (5,9,0)	688	#if !PERL_VERSION_ATLEAST (5,10,0)
569	rss += coro->retstack_max * sizeof (OP *);	689	rss += slot->retstack_max * sizeof (OP *);
570	#endif	690	#endif
		691	}
571	}	692	}
572		693
573	return rss;	694	return rss;
574	}	695	}
575		696
576	/ coroutine stack handling **********************************************/	697	/ coroutine stack handling **********************************************/
577		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
578	static void	789	static void
579	setup_coro (pTHX_ struct coro *coro)	790	coro_setup (pTHX_ struct coro *coro)
580	{	791	{
581	/*	792	/*
582	* emulate part of the perl startup here.	793	* emulate part of the perl startup here.
583	*/	794	*/
584	coro_init_stacks (aTHX);	795	coro_init_stacks (aTHX);
585		796
		797	PL_runops = RUNOPS_DEFAULT;
586	PL_curcop = &PL_compiling;	798	PL_curcop = &PL_compiling;
587	PL_in_eval = EVAL_NULL;	799	PL_in_eval = EVAL_NULL;
588	PL_comppad = 0;	800	PL_comppad = 0;
589	PL_curpm = 0;	801	PL_curpm = 0;
		802	PL_curpad = 0;
590	PL_localizing = 0;	803	PL_localizing = 0;
591	PL_dirty = 0;	804	PL_dirty = 0;
592	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);
593		820
594	{	821	{
595	dSP;	822	dSP;
596	LOGOP myop;	823	LOGOP myop;
597		824
598	SvREFCNT_dec (GvAV (PL_defgv));
599	GvAV (PL_defgv) = coro->args; coro->args = 0;
600
601	Zero (&myop, 1, LOGOP);	825	Zero (&myop, 1, LOGOP);
602	myop.op_next = Nullop;	826	myop.op_next = Nullop;
603	myop.op_flags = OPf_WANT_VOID;	827	myop.op_flags = OPf_WANT_VOID;
604		828
605	PUSHMARK (SP);	829	PUSHMARK (SP);
606	XPUSHs (av_shift (GvAV (PL_defgv)));	830	XPUSHs (sv_2mortal (av_shift (GvAV (PL_defgv))));
607	PUTBACK;	831	PUTBACK;
608	PL_op = (OP *)&myop;	832	PL_op = (OP *)&myop;
609	PL_op = PL_ppaddr[OP_ENTERSUB](aTHX);	833	PL_op = PL_ppaddr[OP_ENTERSUB](aTHX);
610	SPAGAIN;	834	SPAGAIN;
611	}	835	}
612		836
613	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);
614	}	879	}
615		880
616	static void	881	static void
617	free_coro_mortal (pTHX)	882	free_coro_mortal (pTHX)
618	{	883	{
619	if (coro_mortal)	884	if (expect_true (coro_mortal))
620	{	885	{
621	SvREFCNT_dec (coro_mortal);	886	SvREFCNT_dec (coro_mortal);
622	coro_mortal = 0;	887	coro_mortal = 0;
623	}	888	}
		889	}
		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;
624	}	1013	}
625		1014
626	/* 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 */
627	/* _cctx_init should be careful, as it could be called at almost any time */	1016	/* _cctx_init should be careful, as it could be called at almost any time */
628	/* during execution of a perl program */	1017	/* during execution of a perl program */
629	static void NOINLINE	1018	static void NOINLINE
630	prepare_cctx (pTHX_ coro_cctx *cctx)	1019	cctx_prepare (pTHX_ coro_cctx *cctx)
631	{	1020	{
632	dSP;	1021	dSP;
633	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;
634		1028
635	Zero (&myop, 1, LOGOP);	1029	Zero (&myop, 1, LOGOP);
636	myop.op_next = PL_op;	1030	myop.op_next = PL_op;
637	myop.op_flags = OPf_WANT_VOID \| OPf_STACKED;	1031	myop.op_flags = OPf_WANT_VOID \| OPf_STACKED;
638		1032
…		…
648		1042
649	/*	1043	/*
650	* this is a _very_ stripped down perl interpreter ;)	1044	* this is a _very_ stripped down perl interpreter ;)
651	*/	1045	*/
652	static void	1046	static void
653	coro_run (void *arg)	1047	cctx_run (void *arg)
654	{	1048	{
655	dTHX;	1049	dTHX;
656		1050
657	/* coro_run is the alternative tail of transfer(), so unlock here. */	1051	/* cctx_run is the alternative tail of transfer(), so unlock here. */
658	UNLOCK;	1052	UNLOCK;
659		1053
660	PL_top_env = &PL_start_env;	1054	/* we now skip the entersub that lead to transfer() */
		1055	PL_op = PL_op->op_next;
661		1056
662	/* inject a fake subroutine call to cctx_init */	1057	/* inject a fake subroutine call to cctx_init */
663	prepare_cctx (aTHX_ (coro_cctx *)arg);	1058	cctx_prepare (aTHX_ (coro_cctx *)arg);
664		1059
665	/* somebody or something will hit me for both perl_run and PL_restartop */	1060	/* somebody or something will hit me for both perl_run and PL_restartop */
666	PL_restartop = PL_op;	1061	PL_restartop = PL_op;
667	perl_run (PL_curinterp);	1062	perl_run (PL_curinterp);
668		1063
…		…
687	++cctx_count;	1082	++cctx_count;
688		1083
689	Newz (0, cctx, 1, coro_cctx);	1084	Newz (0, cctx, 1, coro_cctx);
690		1085
691	#if HAVE_MMAP	1086	#if HAVE_MMAP
692
693	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;
694	/* mmap supposedly does allocate-on-write for us */	1088	/* mmap supposedly does allocate-on-write for us */
695	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);
696		1090
697	if (cctx->sptr != (void *)-1)	1091	if (cctx->sptr != (void *)-1)
…		…
699	# if CORO_STACKGUARD	1093	# if CORO_STACKGUARD
700	mprotect (cctx->sptr, CORO_STACKGUARD * PAGESIZE, PROT_NONE);	1094	mprotect (cctx->sptr, CORO_STACKGUARD * PAGESIZE, PROT_NONE);
701	# endif	1095	# endif
702	stack_start = CORO_STACKGUARD * PAGESIZE + (char *)cctx->sptr;	1096	stack_start = CORO_STACKGUARD * PAGESIZE + (char *)cctx->sptr;
703	stack_size = cctx->ssize - CORO_STACKGUARD * PAGESIZE;	1097	stack_size = cctx->ssize - CORO_STACKGUARD * PAGESIZE;
704	cctx->mapped = 1;	1098	cctx->flags \|= CC_MAPPED;
705	}	1099	}
706	else	1100	else
707	#endif	1101	#endif
708	{	1102	{
709	cctx->ssize = coro_stacksize * (long)sizeof (long);	1103	cctx->ssize = coro_stacksize * (long)sizeof (long);
…		…
718	stack_start = cctx->sptr;	1112	stack_start = cctx->sptr;
719	stack_size = cctx->ssize;	1113	stack_size = cctx->ssize;
720	}	1114	}
721		1115
722	REGISTER_STACK (cctx, (char )stack_start, (char )stack_start + stack_size);	1116	REGISTER_STACK (cctx, (char )stack_start, (char )stack_start + stack_size);
723	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);
724		1118
725	return cctx;	1119	return cctx;
726	}	1120	}
727		1121
728	static void	1122	static void
…		…
736	#if CORO_USE_VALGRIND	1130	#if CORO_USE_VALGRIND
737	VALGRIND_STACK_DEREGISTER (cctx->valgrind_id);	1131	VALGRIND_STACK_DEREGISTER (cctx->valgrind_id);
738	#endif	1132	#endif
739		1133
740	#if HAVE_MMAP	1134	#if HAVE_MMAP
741	if (cctx->mapped)	1135	if (cctx->flags & CC_MAPPED)
742	munmap (cctx->sptr, cctx->ssize);	1136	munmap (cctx->sptr, cctx->ssize);
743	else	1137	else
744	#endif	1138	#endif
745	Safefree (cctx->sptr);	1139	Safefree (cctx->sptr);
746		1140
747	Safefree (cctx);	1141	Safefree (cctx);
748	}	1142	}
749		1143
		1144	/* wether this cctx should be destructed */
		1145	#define CCTX_EXPIRED(cctx) ((cctx)->ssize < coro_stacksize \|\| ((cctx)->flags & CC_NOREUSE))
		1146
750	static coro_cctx *	1147	static coro_cctx *
751	cctx_get (pTHX)	1148	cctx_get (pTHX)
752	{	1149	{
753	while (cctx_first)	1150	while (expect_true (cctx_first))
754	{	1151	{
755	coro_cctx *cctx = cctx_first;	1152	coro_cctx *cctx = cctx_first;
756	cctx_first = cctx->next;	1153	cctx_first = cctx->next;
757	--cctx_idle;	1154	--cctx_idle;
758		1155
759	if (cctx->ssize >= coro_stacksize)	1156	if (expect_true (!CCTX_EXPIRED (cctx)))
760	return cctx;	1157	return cctx;
761		1158
762	cctx_destroy (cctx);	1159	cctx_destroy (cctx);
763	}	1160	}
764		1161
765	PL_op = PL_op->op_next;
766	return cctx_new ();	1162	return cctx_new ();
767	}	1163	}
768		1164
769	static void	1165	static void
770	cctx_put (coro_cctx *cctx)	1166	cctx_put (coro_cctx *cctx)
771	{	1167	{
772	/* free another cctx if overlimit */	1168	/* free another cctx if overlimit */
773	if (cctx_idle >= MAX_IDLE_CCTX)	1169	if (expect_false (cctx_idle >= MAX_IDLE_CCTX))
774	{	1170	{
775	coro_cctx *first = cctx_first;	1171	coro_cctx *first = cctx_first;
776	cctx_first = first->next;	1172	cctx_first = first->next;
777	--cctx_idle;	1173	--cctx_idle;
778		1174
779	assert (!first->inuse);
780	cctx_destroy (first);	1175	cctx_destroy (first);
781	}	1176	}
782		1177
783	++cctx_idle;	1178	++cctx_idle;
784	cctx->next = cctx_first;	1179	cctx->next = cctx_first;
785	cctx_first = cctx;	1180	cctx_first = cctx;
786	}	1181	}
787		1182
788	/ coroutine switching ***************************************************/	1183	/ coroutine switching ***************************************************/
789		1184
790	/* 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 */
791	static void NOINLINE	1207	static void NOINLINE
792	transfer (pTHX_ struct coro prev, struct coro next)	1208	transfer (pTHX_ struct coro prev, struct coro next, int force_cctx)
793	{	1209	{
794	dSTACKLEVEL;	1210	dSTACKLEVEL;
		1211	static volatile int has_throw;
795		1212
796	/* sometimes transfer is only called to set idle_sp */	1213	/* sometimes transfer is only called to set idle_sp */
797	if (!next)	1214	if (expect_false (!next))
798	{	1215	{
799	((coro_cctx *)prev)->idle_sp = STACKLEVEL;	1216	((coro_cctx *)prev)->idle_sp = STACKLEVEL;
800	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 */
801	}	1218	}
802	else if (prev != next)	1219	else if (expect_true (prev != next))
803	{	1220	{
804	coro_cctx *prev__cctx;	1221	coro_cctx *prev__cctx;
805		1222
806	if (prev->flags & CF_NEW)	1223	if (expect_false (prev->flags & CF_NEW))
807	{	1224	{
808	/* create a new empty context */	1225	/* create a new empty context */
809	Newz (0, prev->cctx, 1, coro_cctx);	1226	Newz (0, prev->cctx, 1, coro_cctx);
810	prev->cctx->inuse = 1;
811	prev->flags &= ~CF_NEW;	1227	prev->flags &= ~CF_NEW;
812	prev->flags \|= CF_RUNNING;	1228	prev->flags \|= CF_RUNNING;
813	}	1229	}
814		1230
815	/TODO: must not croak here /
816	if (!prev->flags & CF_RUNNING)
817	croak ("Coro::State::transfer called with non-running prev Coro::State, but can only transfer from running states");
818
819	if (next->flags & CF_RUNNING)
820	croak ("Coro::State::transfer called with running next Coro::State, but can only transfer to inactive states");
821
822	if (next->flags & CF_DESTROYED)
823	croak ("Coro::State::transfer called with destroyed next Coro::State, but can only transfer to inactive states");
824
825	prev->flags &= ~CF_RUNNING;	1231	prev->flags &= ~CF_RUNNING;
826	next->flags \|= CF_RUNNING;	1232	next->flags \|= CF_RUNNING;
827		1233
828	LOCK;	1234	LOCK;
829		1235
		1236	/* first get rid of the old state */
		1237	save_perl (aTHX_ prev);
		1238
830	if (next->flags & CF_NEW)	1239	if (expect_false (next->flags & CF_NEW))
831	{	1240	{
832	/* need to start coroutine */	1241	/* need to start coroutine */
833	next->flags &= ~CF_NEW;	1242	next->flags &= ~CF_NEW;
834	/* first get rid of the old state */
835	save_perl (aTHX_ prev);
836	/* setup coroutine call */	1243	/* setup coroutine call */
837	setup_coro (aTHX_ next);	1244	coro_setup (aTHX_ next);
838	/* need a new stack */
839	assert (!next->cctx);
840	}	1245	}
841	else	1246	else
842	{
843	/* coroutine already started */
844	save_perl (aTHX_ prev);
845	load_perl (aTHX_ next);	1247	load_perl (aTHX_ next);
846	}
847		1248
848	prev__cctx = prev->cctx;	1249	prev__cctx = prev->cctx;
849		1250
850	/* possibly "free" the cctx */	1251	/* possibly "free" the cctx */
		1252	if (expect_true (
851	if (prev__cctx->idle_sp == STACKLEVEL)	1253	prev__cctx->idle_sp == STACKLEVEL
		1254	&& !(prev__cctx->flags & CC_TRACE)
		1255	&& !force_cctx
		1256	))
852	{	1257	{
853	/* 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 */
854	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));
855		1260
856	prev->cctx = 0;	1261	prev->cctx = 0;
857		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
858	cctx_put (prev__cctx);	1269	cctx_put (prev__cctx);
859	prev__cctx->inuse = 0;
860	}	1270	}
861		1271
		1272	++next->usecount;
		1273
862	if (!next->cctx)	1274	if (expect_true (!next->cctx))
863	{
864	next->cctx = cctx_get (aTHX);	1275	next->cctx = cctx_get (aTHX);
865	assert (!next->cctx->inuse);
866	next->cctx->inuse = 1;
867	}
868		1276
		1277	has_throw = !!next->throw;
		1278
869	if (prev__cctx != next->cctx)	1279	if (expect_false (prev__cctx != next->cctx))
870	{	1280	{
871	prev__cctx->top_env = PL_top_env;	1281	prev__cctx->top_env = PL_top_env;
872	PL_top_env = next->cctx->top_env;	1282	PL_top_env = next->cctx->top_env;
873	coro_transfer (&prev__cctx->cctx, &next->cctx->cctx);	1283	coro_transfer (&prev__cctx->cctx, &next->cctx->cctx);
874	}	1284	}
875		1285
876	free_coro_mortal (aTHX);	1286	free_coro_mortal (aTHX);
877	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	}
878	}	1301	}
879	}	1302	}
880		1303
881	struct transfer_args	1304	struct transfer_args
882	{	1305	{
883	struct coro prev, next;	1306	struct coro prev, next;
884	};	1307	};
885		1308
		1309	#define TRANSFER(ta, force_cctx) transfer (aTHX_ (ta).prev, (ta).next, (force_cctx))
886	#define TRANSFER(ta) transfer (aTHX_ (ta).prev, (ta).next)	1310	#define TRANSFER_CHECK(ta) transfer_check (aTHX_ (ta).prev, (ta).next)
887		1311
888	/ high level stuff ******************************************************/	1312	/ high level stuff ******************************************************/
889		1313
890	static int	1314	static int
891	coro_state_destroy (pTHX_ struct coro *coro)	1315	coro_state_destroy (pTHX_ struct coro *coro)
…		…
908		1332
909	if (coro->mainstack && coro->mainstack != main_mainstack)	1333	if (coro->mainstack && coro->mainstack != main_mainstack)
910	{	1334	{
911	struct coro temp;	1335	struct coro temp;
912		1336
913	assert (!(coro->flags & CF_RUNNING));
914
915	Zero (&temp, 1, struct coro);
916	temp.save = CORO_SAVE_ALL;
917
918	if (coro->flags & CF_RUNNING)	1337	if (coro->flags & CF_RUNNING)
919	croak ("FATAL: tried to destroy currently running coroutine");	1338	croak ("FATAL: tried to destroy currently running coroutine");
920		1339
921	save_perl (aTHX_ &temp);	1340	save_perl (aTHX_ &temp);
922	load_perl (aTHX_ coro);	1341	load_perl (aTHX_ coro);
923		1342
924	coro_destroy_stacks (aTHX);	1343	coro_destroy (aTHX_ coro);
925		1344
926	load_perl (aTHX_ &temp); /* this will get rid of defsv etc.. */	1345	load_perl (aTHX_ &temp);
927		1346
928	coro->mainstack = 0;	1347	coro->slot = 0;
929	}	1348	}
930		1349
931	cctx_destroy (coro->cctx);	1350	cctx_destroy (coro->cctx);
932	SvREFCNT_dec (coro->args);	1351	SvREFCNT_dec (coro->args);
933		1352
…		…
974	#else	1393	#else
975	# define MGf_DUP 0	1394	# define MGf_DUP 0
976	#endif	1395	#endif
977	};	1396	};
978		1397
979	static struct coro *
980	SvSTATE_ (pTHX_ SV *coro)
981	{
982	HV *stash;
983	MAGIC *mg;
984
985	if (SvROK (coro))
986	coro = SvRV (coro);
987
988	stash = SvSTASH (coro);
989	if (stash != coro_stash && stash != coro_state_stash)
990	{
991	/* very slow, but rare, check */
992	if (!sv_derived_from (sv_2mortal (newRV_inc (coro)), "Coro::State"))
993	croak ("Coro::State object required");
994	}
995
996	mg = CORO_MAGIC (coro);
997	return (struct coro *)mg->mg_ptr;
998	}
999
1000	#define SvSTATE(sv) SvSTATE_ (aTHX_ (sv))
1001
1002	static void	1398	static void
1003	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)
1004	{	1400	{
1005	ta->prev = SvSTATE (prev_sv);	1401	ta->prev = SvSTATE (prev_sv);
1006	ta->next = SvSTATE (next_sv);	1402	ta->next = SvSTATE (next_sv);
		1403	TRANSFER_CHECK (*ta);
1007	}	1404	}
1008		1405
1009	static void	1406	static void
1010	api_transfer (SV prev_sv, SV next_sv)	1407	api_transfer (SV prev_sv, SV next_sv)
1011	{	1408	{
1012	dTHX;	1409	dTHX;
1013	struct transfer_args ta;	1410	struct transfer_args ta;
1014		1411
1015	prepare_transfer (aTHX_ &ta, prev_sv, next_sv);	1412	prepare_transfer (aTHX_ &ta, prev_sv, next_sv);
1016	TRANSFER (ta);	1413	TRANSFER (ta, 1);
1017	}
1018
1019	static int
1020	api_save (SV *coro_sv, int new_save)
1021	{
1022	dTHX;
1023	struct coro *coro = SvSTATE (coro_sv);
1024	int old_save = coro->save;
1025
1026	if (new_save >= 0)
1027	coro->save = new_save;
1028
1029	return old_save;
1030	}	1414	}
1031		1415
1032	/ Coro ******************************************************************/	1416	/ Coro ******************************************************************/
1033		1417
1034	static void	1418	static void
…		…
1036	{	1420	{
1037	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);
1038	}	1422	}
1039		1423
1040	static SV *	1424	static SV *
1041	coro_deq (pTHX_ int min_prio)	1425	coro_deq (pTHX)
1042	{	1426	{
1043	int prio = PRIO_MAX - PRIO_MIN;	1427	int prio;
1044		1428
1045	min_prio -= PRIO_MIN;
1046	if (min_prio < 0)
1047	min_prio = 0;
1048
1049	for (prio = PRIO_MAX - PRIO_MIN + 1; --prio >= min_prio; )	1429	for (prio = PRIO_MAX - PRIO_MIN + 1; --prio >= 0; )
1050	if (AvFILLp (coro_ready [prio]) >= 0)	1430	if (AvFILLp (coro_ready [prio]) >= 0)
1051	return av_shift (coro_ready [prio]);	1431	return av_shift (coro_ready [prio]);
1052		1432
1053	return 0;	1433	return 0;
1054	}	1434	}
…		…
1056	static int	1436	static int
1057	api_ready (SV *coro_sv)	1437	api_ready (SV *coro_sv)
1058	{	1438	{
1059	dTHX;	1439	dTHX;
1060	struct coro *coro;	1440	struct coro *coro;
		1441	SV *sv_hook;
		1442	void (*xs_hook)(void);
1061		1443
1062	if (SvROK (coro_sv))	1444	if (SvROK (coro_sv))
1063	coro_sv = SvRV (coro_sv);	1445	coro_sv = SvRV (coro_sv);
1064		1446
1065	coro = SvSTATE (coro_sv);	1447	coro = SvSTATE (coro_sv);
…		…
1068	return 0;	1450	return 0;
1069		1451
1070	coro->flags \|= CF_READY;	1452	coro->flags \|= CF_READY;
1071		1453
1072	LOCK;	1454	LOCK;
		1455
		1456	sv_hook = coro_nready ? 0 : coro_readyhook;
		1457	xs_hook = coro_nready ? 0 : coroapi.readyhook;
		1458
1073	coro_enq (aTHX_ SvREFCNT_inc (coro_sv));	1459	coro_enq (aTHX_ SvREFCNT_inc_NN (coro_sv));
1074	++coro_nready;	1460	++coro_nready;
		1461
1075	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 ();
1076		1482
1077	return 1;	1483	return 1;
1078	}	1484	}
1079		1485
1080	static int	1486	static int
…		…
1090	SV prev_sv, next_sv;	1496	SV prev_sv, next_sv;
1091		1497
1092	for (;;)	1498	for (;;)
1093	{	1499	{
1094	LOCK;	1500	LOCK;
1095	next_sv = coro_deq (aTHX_ PRIO_MIN);	1501	next_sv = coro_deq (aTHX);
1096		1502
1097	/* nothing to schedule: call the idle handler */	1503	/* nothing to schedule: call the idle handler */
1098	if (!next_sv)	1504	if (expect_false (!next_sv))
1099	{	1505	{
1100	dSP;	1506	dSP;
1101	UNLOCK;	1507	UNLOCK;
1102		1508
1103	ENTER;	1509	ENTER;
1104	SAVETMPS;	1510	SAVETMPS;
1105		1511
1106	PUSHMARK (SP);	1512	PUSHMARK (SP);
1107	PUTBACK;	1513	PUTBACK;
1108	call_sv (get_sv ("Coro::idle", FALSE), G_DISCARD);	1514	call_sv (get_sv ("Coro::idle", FALSE), G_DISCARD);
		1515	SPAGAIN;
1109		1516
1110	FREETMPS;	1517	FREETMPS;
1111	LEAVE;	1518	LEAVE;
1112	continue;	1519	continue;
1113	}	1520	}
1114		1521
1115	ta->next = SvSTATE (next_sv);	1522	ta->next = SvSTATE (next_sv);
1116		1523
1117	/* cannot transfer to destroyed coros, skip and look for next */	1524	/* cannot transfer to destroyed coros, skip and look for next */
1118	if (ta->next->flags & CF_DESTROYED)	1525	if (expect_false (ta->next->flags & CF_DESTROYED))
1119	{	1526	{
1120	UNLOCK;	1527	UNLOCK;
1121	SvREFCNT_dec (next_sv);	1528	SvREFCNT_dec (next_sv);
1122	/* coro_nready is already taken care of by destroy */	1529	/* coro_nready is already taken care of by destroy */
1123	continue;	1530	continue;
…		…
1128	break;	1535	break;
1129	}	1536	}
1130		1537
1131	/* free this only after the transfer */	1538	/* free this only after the transfer */
1132	prev_sv = SvRV (coro_current);	1539	prev_sv = SvRV (coro_current);
1133	SvRV_set (coro_current, next_sv);
1134	ta->prev = SvSTATE (prev_sv);	1540	ta->prev = SvSTATE (prev_sv);
1135		1541	TRANSFER_CHECK (*ta);
1136	assert (ta->next->flags & CF_READY);	1542	assert (ta->next->flags & CF_READY);
1137	ta->next->flags &= ~CF_READY;	1543	ta->next->flags &= ~CF_READY;
		1544	SvRV_set (coro_current, next_sv);
1138		1545
1139	LOCK;	1546	LOCK;
1140	free_coro_mortal (aTHX);	1547	free_coro_mortal (aTHX);
1141	coro_mortal = prev_sv;	1548	coro_mortal = prev_sv;
1142	UNLOCK;	1549	UNLOCK;
…		…
1168	{	1575	{
1169	dTHX;	1576	dTHX;
1170	struct transfer_args ta;	1577	struct transfer_args ta;
1171		1578
1172	prepare_schedule (aTHX_ &ta);	1579	prepare_schedule (aTHX_ &ta);
1173	TRANSFER (ta);	1580	TRANSFER (ta, 1);
1174	}	1581	}
1175		1582
1176	static int	1583	static int
1177	api_cede (void)	1584	api_cede (void)
1178	{	1585	{
1179	dTHX;	1586	dTHX;
1180	struct transfer_args ta;	1587	struct transfer_args ta;
1181		1588
1182	prepare_cede (aTHX_ &ta);	1589	prepare_cede (aTHX_ &ta);
1183		1590
1184	if (ta.prev != ta.next)	1591	if (expect_true (ta.prev != ta.next))
1185	{	1592	{
1186	TRANSFER (ta);	1593	TRANSFER (ta, 1);
1187	return 1;	1594	return 1;
1188	}	1595	}
1189	else	1596	else
1190	return 0;	1597	return 0;
1191	}	1598	}
…		…
1196	dTHX;	1603	dTHX;
1197	struct transfer_args ta;	1604	struct transfer_args ta;
1198		1605
1199	if (prepare_cede_notself (aTHX_ &ta))	1606	if (prepare_cede_notself (aTHX_ &ta))
1200	{	1607	{
1201	TRANSFER (ta);	1608	TRANSFER (ta, 1);
1202	return 1;	1609	return 1;
1203	}	1610	}
1204	else	1611	else
1205	return 0;	1612	return 0;
1206	}	1613	}
1207		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
1208	MODULE = Coro::State PACKAGE = Coro::State	1733	MODULE = Coro::State PACKAGE = Coro::State PREFIX = api_
1209		1734
1210	PROTOTYPES: DISABLE	1735	PROTOTYPES: DISABLE
1211		1736
1212	BOOT:	1737	BOOT:
1213	{	1738	{
1214	#ifdef USE_ITHREADS	1739	#ifdef USE_ITHREADS
1215	MUTEX_INIT (&coro_mutex);	1740	MUTEX_INIT (&coro_mutex);
1216	#endif	1741	#endif
1217	BOOT_PAGESIZE;	1742	BOOT_PAGESIZE;
1218		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
1219	coro_state_stash = gv_stashpv ("Coro::State", TRUE);	1755	coro_state_stash = gv_stashpv ("Coro::State", TRUE);
1220		1756
1221	newCONSTSUB (coro_state_stash, "SAVE_DEFAV", newSViv (CORO_SAVE_DEFAV));	1757	newCONSTSUB (coro_state_stash, "CC_TRACE" , newSViv (CC_TRACE));
1222	newCONSTSUB (coro_state_stash, "SAVE_DEFSV", newSViv (CORO_SAVE_DEFSV));	1758	newCONSTSUB (coro_state_stash, "CC_TRACE_SUB" , newSViv (CC_TRACE_SUB));
1223	newCONSTSUB (coro_state_stash, "SAVE_ERRSV", newSViv (CORO_SAVE_ERRSV));
1224	newCONSTSUB (coro_state_stash, "SAVE_IRSSV", newSViv (CORO_SAVE_IRSSV));
1225	newCONSTSUB (coro_state_stash, "SAVE_DEFFH", newSViv (CORO_SAVE_DEFFH));
1226	newCONSTSUB (coro_state_stash, "SAVE_DEF", newSViv (CORO_SAVE_DEF));	1759	newCONSTSUB (coro_state_stash, "CC_TRACE_LINE", newSViv (CC_TRACE_LINE));
1227	newCONSTSUB (coro_state_stash, "SAVE_ALL", newSViv (CORO_SAVE_ALL));	1760	newCONSTSUB (coro_state_stash, "CC_TRACE_ALL" , newSViv (CC_TRACE_ALL));
1228		1761
1229	main_mainstack = PL_mainstack;	1762	main_mainstack = PL_mainstack;
1230	main_top_env = PL_top_env;	1763	main_top_env = PL_top_env;
1231		1764
1232	while (main_top_env->je_prev)	1765	while (main_top_env->je_prev)
1233	main_top_env = main_top_env->je_prev;	1766	main_top_env = main_top_env->je_prev;
1234		1767
1235	coroapi.ver = CORO_API_VERSION;	1768	coroapi.ver = CORO_API_VERSION;
		1769	coroapi.rev = CORO_API_REVISION;
1236	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	}
1237		1780
1238	assert (("PRIO_NORMAL must be 0", !PRIO_NORMAL));	1781	assert (("PRIO_NORMAL must be 0", !PRIO_NORMAL));
1239	}	1782	}
1240		1783
1241	SV *	1784	SV *
1242	new (char *klass, ...)	1785	new (char *klass, ...)
1243	CODE:	1786	CODE:
1244	{	1787	{
1245	struct coro *coro;	1788	struct coro *coro;
		1789	MAGIC *mg;
1246	HV *hv;	1790	HV *hv;
1247	int i;	1791	int i;
1248		1792
1249	Newz (0, coro, 1, struct coro);	1793	Newz (0, coro, 1, struct coro);
1250	coro->args = newAV ();	1794	coro->args = newAV ();
1251	coro->save = CORO_SAVE_DEF;
1252	coro->flags = CF_NEW;	1795	coro->flags = CF_NEW;
1253		1796
1254	if (coro_first) coro_first->prev = coro;	1797	if (coro_first) coro_first->prev = coro;
1255	coro->next = coro_first;	1798	coro->next = coro_first;
1256	coro_first = coro;	1799	coro_first = coro;
1257		1800
1258	coro->hv = hv = newHV ();	1801	coro->hv = hv = newHV ();
1259	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;
1260	RETVAL = sv_bless (newRV_noinc ((SV *)hv), gv_stashpv (klass, 1));	1804	RETVAL = sv_bless (newRV_noinc ((SV *)hv), gv_stashpv (klass, 1));
1261		1805
		1806	av_extend (coro->args, items - 1);
1262	for (i = 1; i < items; i++)	1807	for (i = 1; i < items; i++)
1263	av_push (coro->args, newSVsv (ST (i)));	1808	av_push (coro->args, newSVsv (ST (i)));
1264	}	1809	}
1265	OUTPUT:	1810	OUTPUT:
1266	RETVAL	1811	RETVAL
1267		1812
1268	int	1813	# these not obviously related functions are all rolled into the same xs
1269	save (SV *coro, int new_save = -1)	1814	# function to increase chances that they all will call transfer with the same
1270	CODE:	1815	# stack offset
1271	RETVAL = api_save (coro, new_save);
1272	OUTPUT:
1273	RETVAL
1274
1275	int
1276	save_also (SV *coro_sv, int save_also)
1277	CODE:
1278	{
1279	struct coro *coro = SvSTATE (coro_sv);
1280	RETVAL = coro->save;
1281	coro->save \|= save_also;
1282	}
1283	OUTPUT:
1284	RETVAL
1285
1286	void	1816	void
1287	_set_stacklevel (...)	1817	_set_stacklevel (...)
1288	ALIAS:	1818	ALIAS:
1289	Coro::State::transfer = 1	1819	Coro::State::transfer = 1
1290	Coro::schedule = 2	1820	Coro::schedule = 2
…		…
1292	Coro::cede_notself = 4	1822	Coro::cede_notself = 4
1293	CODE:	1823	CODE:
1294	{	1824	{
1295	struct transfer_args ta;	1825	struct transfer_args ta;
1296		1826
		1827	PUTBACK;
1297	switch (ix)	1828	switch (ix)
1298	{	1829	{
1299	case 0:	1830	case 0:
1300	ta.prev = (struct coro )INT2PTR (coro_cctx , SvIV (ST (0)));	1831	ta.prev = (struct coro )INT2PTR (coro_cctx , SvIV (ST (0)));
1301	ta.next = 0;	1832	ta.next = 0;
…		…
1320	if (!prepare_cede_notself (aTHX_ &ta))	1851	if (!prepare_cede_notself (aTHX_ &ta))
1321	XSRETURN_EMPTY;	1852	XSRETURN_EMPTY;
1322		1853
1323	break;	1854	break;
1324	}	1855	}
		1856	SPAGAIN;
1325		1857
1326	BARRIER;	1858	BARRIER;
		1859	PUTBACK;
1327	TRANSFER (ta);	1860	TRANSFER (ta, 0);
1328		1861	SPAGAIN; /* might be the sp of a different coroutine now */
1329	if (GIMME_V != G_VOID && ta.next != ta.prev)	1862	/* be extra careful not to ever do anything after TRANSFER */
1330	XSRETURN_YES;
1331	}	1863	}
1332		1864
1333	bool	1865	bool
1334	_destroy (SV *coro_sv)	1866	_destroy (SV *coro_sv)
1335	CODE:	1867	CODE:
1336	RETVAL = coro_state_destroy (aTHX_ SvSTATE (coro_sv));	1868	RETVAL = coro_state_destroy (aTHX_ SvSTATE (coro_sv));
1337	OUTPUT:	1869	OUTPUT:
1338	RETVAL	1870	RETVAL
1339		1871
1340	void	1872	void
1341	_exit (code)	1873	_exit (int code)
1342	int code
1343	PROTOTYPE: $	1874	PROTOTYPE: $
1344	CODE:	1875	CODE:
1345	_exit (code);	1876	_exit (code);
1346		1877
1347	int	1878	int
…		…
1376	if (coro->hv)	1907	if (coro->hv)
1377	XPUSHs (sv_2mortal (newRV_inc ((SV *)coro->hv)));	1908	XPUSHs (sv_2mortal (newRV_inc ((SV *)coro->hv)));
1378	}	1909	}
1379		1910
1380	void	1911	void
1381	_eval (Coro::State coro, SV *coderef)	1912	call (Coro::State coro, SV *coderef)
		1913	ALIAS:
		1914	eval = 1
1382	CODE:	1915	CODE:
1383	{	1916	{
1384	if (coro->mainstack)	1917	if (coro->mainstack && ((coro->flags & CF_RUNNING) \|\| coro->slot))
1385	{	1918	{
1386	struct coro temp;	1919	struct coro temp;
1387	Zero (&temp, 1, struct coro);
1388	temp.save = CORO_SAVE_ALL;
1389		1920
1390	if (!(coro->flags & CF_RUNNING))	1921	if (!(coro->flags & CF_RUNNING))
1391	{	1922	{
		1923	PUTBACK;
1392	save_perl (aTHX_ &temp);	1924	save_perl (aTHX_ &temp);
1393	load_perl (aTHX_ coro);	1925	load_perl (aTHX_ coro);
1394	}	1926	}
1395		1927
1396	{	1928	{
1397	dSP;	1929	dSP;
1398	ENTER;	1930	ENTER;
1399	SAVETMPS;	1931	SAVETMPS;
		1932	PUTBACK;
		1933	PUSHSTACK;
1400	PUSHMARK (SP);	1934	PUSHMARK (SP);
1401	PUTBACK;	1935
		1936	if (ix)
		1937	eval_sv (coderef, 0);
		1938	else
1402	call_sv (coderef, G_KEEPERR \| G_EVAL \| G_VOID \| G_DISCARD);	1939	call_sv (coderef, G_KEEPERR \| G_EVAL \| G_VOID \| G_DISCARD);
		1940
		1941	POPSTACK;
1403	SPAGAIN;	1942	SPAGAIN;
1404	FREETMPS;	1943	FREETMPS;
1405	LEAVE;	1944	LEAVE;
1406	PUTBACK;	1945	PUTBACK;
1407	}	1946	}
1408		1947
1409	if (!(coro->flags & CF_RUNNING))	1948	if (!(coro->flags & CF_RUNNING))
1410	{	1949	{
1411	save_perl (aTHX_ coro);	1950	save_perl (aTHX_ coro);
1412	load_perl (aTHX_ &temp);	1951	load_perl (aTHX_ &temp);
		1952	SPAGAIN;
1413	}	1953	}
1414	}	1954	}
1415	}	1955	}
1416		1956
1417	SV *	1957	SV *
1418	is_ready (Coro::State coro)	1958	is_ready (Coro::State coro)
1419	PROTOTYPE: $	1959	PROTOTYPE: $
1420	ALIAS:	1960	ALIAS:
1421	is_ready = CF_READY	1961	is_ready = CF_READY
…		…
1425	CODE:	1965	CODE:
1426	RETVAL = boolSV (coro->flags & ix);	1966	RETVAL = boolSV (coro->flags & ix);
1427	OUTPUT:	1967	OUTPUT:
1428	RETVAL	1968	RETVAL
1429		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
1430	IV	1989	IV
1431	rss (Coro::State coro)	1990	rss (Coro::State coro)
1432	PROTOTYPE: $	1991	PROTOTYPE: $
		1992	ALIAS:
		1993	usecount = 1
1433	CODE:	1994	CODE:
1434	RETVAL = coro_rss (coro);	1995	switch (ix)
		1996	{
		1997	case 0: RETVAL = coro_rss (aTHX_ coro); break;
		1998	case 1: RETVAL = coro->usecount; break;
		1999	}
1435	OUTPUT:	2000	OUTPUT:
1436	RETVAL	2001	RETVAL
1437		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	}
1438		2031
1439	MODULE = Coro::State PACKAGE = Coro	2032	MODULE = Coro::State PACKAGE = Coro
1440		2033
1441	BOOT:	2034	BOOT:
1442	{	2035	{
1443	int i;	2036	int i;
1444		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
1445	coro_stash = gv_stashpv ("Coro", TRUE);	2045	coro_stash = gv_stashpv ("Coro", TRUE);
1446		2046
1447	newCONSTSUB (coro_stash, "PRIO_MAX", newSViv (PRIO_MAX));	2047	newCONSTSUB (coro_stash, "PRIO_MAX", newSViv (PRIO_MAX));
1448	newCONSTSUB (coro_stash, "PRIO_HIGH", newSViv (PRIO_HIGH));	2048	newCONSTSUB (coro_stash, "PRIO_HIGH", newSViv (PRIO_HIGH));
1449	newCONSTSUB (coro_stash, "PRIO_NORMAL", newSViv (PRIO_NORMAL));	2049	newCONSTSUB (coro_stash, "PRIO_NORMAL", newSViv (PRIO_NORMAL));
1450	newCONSTSUB (coro_stash, "PRIO_LOW", newSViv (PRIO_LOW));	2050	newCONSTSUB (coro_stash, "PRIO_LOW", newSViv (PRIO_LOW));
1451	newCONSTSUB (coro_stash, "PRIO_IDLE", newSViv (PRIO_IDLE));	2051	newCONSTSUB (coro_stash, "PRIO_IDLE", newSViv (PRIO_IDLE));
1452	newCONSTSUB (coro_stash, "PRIO_MIN", newSViv (PRIO_MIN));	2052	newCONSTSUB (coro_stash, "PRIO_MIN", newSViv (PRIO_MIN));
1453		2053
1454	coro_current = get_sv ("Coro::current", FALSE);
1455	SvREADONLY_on (coro_current);
1456
1457	for (i = PRIO_MAX - PRIO_MIN + 1; i--; )	2054	for (i = PRIO_MAX - PRIO_MIN + 1; i--; )
1458	coro_ready[i] = newAV ();	2055	coro_ready[i] = newAV ();
1459		2056
1460	{	2057	{
1461	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 */
1462		2060
1463	coroapi.schedule = api_schedule;	2061	coroapi.schedule = api_schedule;
1464	coroapi.save = api_save;
1465	coroapi.cede = api_cede;	2062	coroapi.cede = api_cede;
1466	coroapi.cede_notself = api_cede_notself;	2063	coroapi.cede_notself = api_cede_notself;
1467	coroapi.ready = api_ready;	2064	coroapi.ready = api_ready;
1468	coroapi.is_ready = api_is_ready;	2065	coroapi.is_ready = api_is_ready;
1469	coroapi.nready = &coro_nready;	2066	coroapi.nready = &coro_nready;
…		…
1478	void	2075	void
1479	_set_current (SV *current)	2076	_set_current (SV *current)
1480	PROTOTYPE: $	2077	PROTOTYPE: $
1481	CODE:	2078	CODE:
1482	SvREFCNT_dec (SvRV (coro_current));	2079	SvREFCNT_dec (SvRV (coro_current));
1483	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;
1484		2090
1485	int	2091	int
1486	prio (Coro::State coro, int newprio = 0)	2092	prio (Coro::State coro, int newprio = 0)
1487	ALIAS:	2093	ALIAS:
1488	nice = 1	2094	nice = 1
…		…
1518	CODE:	2124	CODE:
1519	RETVAL = coro_nready;	2125	RETVAL = coro_nready;
1520	OUTPUT:	2126	OUTPUT:
1521	RETVAL	2127	RETVAL
1522		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
1523	MODULE = Coro::State PACKAGE = Coro::AIO	2251	MODULE = Coro::State PACKAGE = Coro::AIO
1524		2252
1525	SV *	2253	void
1526	_get_state ()	2254	_get_state (SV *self)
1527	CODE:	2255	PPCODE:
1528	{	2256	{
1529	struct io_state *data;	2257	AV *defav = GvAV (PL_defgv);
1530		2258	AV *av = newAV ();
		2259	int i;
1531	RETVAL = newSV (sizeof (struct io_state));	2260	SV *data_sv = newSV (sizeof (struct io_state));
1532	data = (struct io_state *)SvPVX (RETVAL);	2261	struct io_state data = (struct io_state )SvPVX (data_sv);
1533	SvCUR_set (RETVAL, sizeof (struct io_state));	2262	SvCUR_set (data_sv, sizeof (struct io_state));
1534	SvPOK_only (RETVAL);	2263	SvPOK_only (data_sv);
1535		2264
1536	data->errorno = errno;	2265	data->errorno = errno;
1537	data->laststype = PL_laststype;	2266	data->laststype = PL_laststype;
1538	data->laststatval = PL_laststatval;	2267	data->laststatval = PL_laststatval;
1539	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);
1540	}	2280	}
1541	OUTPUT:
1542	RETVAL
1543		2281
1544	void	2282	void
1545	_set_state (char *data_)	2283	_set_state (SV *state)
1546	PROTOTYPE: $	2284	PROTOTYPE: $
1547	CODE:	2285	PPCODE:
1548	{	2286	{
1549	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;
1550		2290
1551	errno = data->errorno;	2291	errno = data->errorno;
1552	PL_laststype = data->laststype;	2292	PL_laststype = data->laststype;
1553	PL_laststatval = data->laststatval;	2293	PL_laststatval = data->laststatval;
1554	PL_statcache = data->statcache;	2294	PL_statcache = data->statcache;
1555	}
1556		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);

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Comparing Coro/Coro/State.xs (file contents): Revision 1.155 by root, Fri Sep 21 01:09:36 2007 UTC vs. Revision 1.250 by root, Wed Oct 22 16:34:07 2008 UTC

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Comparing Coro/Coro/State.xs (file contents):
Revision 1.155 by root, Fri Sep 21 01:09:36 2007 UTC vs.
Revision 1.250 by root, Wed Oct 22 16:34:07 2008 UTC