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

Comparing Coro/Coro/State.xs (file contents):
Revision 1.137 by root, Sun Jan 14 20:47:53 2007 UTC vs.
Revision 1.213 by root, Thu Oct 11 00:40:48 2007 UTC

…		…
1	#include "libcoro/coro.c"	1	#include "libcoro/coro.c"
		2
		3	#define PERL_NO_GET_CONTEXT
		4	#define PERL_EXT
2		5
3	#include "EXTERN.h"	6	#include "EXTERN.h"
4	#include "perl.h"	7	#include "perl.h"
5	#include "XSUB.h"	8	#include "XSUB.h"
6		9
7	#include "patchlevel.h"	10	#include "patchlevel.h"
8		11
9	#include <stdio.h>	12	#include <stdio.h>
10	#include <errno.h>	13	#include <errno.h>
11	#include <assert.h>	14	#include <assert.h>
		15	#include <inttypes.h> /* portable stdint.h */
12		16
13	#ifdef HAVE_MMAP	17	#ifdef HAVE_MMAP
14	# include <unistd.h>	18	# include <unistd.h>
15	# include <sys/mman.h>	19	# include <sys/mman.h>
16	# ifndef MAP_ANONYMOUS	20	# ifndef MAP_ANONYMOUS
31	#else	35	#else
32	# define PAGESIZE 0	36	# define PAGESIZE 0
33	# define BOOT_PAGESIZE (void)0	37	# define BOOT_PAGESIZE (void)0
34	#endif	38	#endif
35		39
36	#if USE_VALGRIND	40	#if CORO_USE_VALGRIND
37	# include <valgrind/valgrind.h>	41	# include <valgrind/valgrind.h>
		42	# define REGISTER_STACK(cctx,start,end) (cctx)->valgrind_id = VALGRIND_STACK_REGISTER ((start), (end))
		43	#else
		44	# define REGISTER_STACK(cctx,start,end)
38	#endif	45	#endif
39		46
40	/* the maximum number of idle cctx that will be pooled */	47	/* the maximum number of idle cctx that will be pooled */
41	#define MAX_IDLE_CCTX 8	48	#define MAX_IDLE_CCTX 8
42		49
…		…
70	/* 5.8.7 */	77	/* 5.8.7 */
71	#ifndef SvRV_set	78	#ifndef SvRV_set
72	# define SvRV_set(s,v) SvRV(s) = (v)	79	# define SvRV_set(s,v) SvRV(s) = (v)
73	#endif	80	#endif
74		81
		82	/* 5.8.8 */
		83	#ifndef GV_NOTQUAL
		84	# define GV_NOTQUAL 0
		85	#endif
		86	#ifndef newSV
		87	# define newSV(l) NEWSV(0,l)
		88	#endif
		89
75	#if !__i386 && !__x86_64 && !__powerpc && !__m68k && !__alpha && !__mips && !__sparc64	90	#if !__i386 && !__x86_64 && !__powerpc && !__m68k && !__alpha && !__mips && !__sparc64
76	# undef STACKGUARD	91	# undef CORO_STACKGUARD
77	#endif	92	#endif
78		93
79	#ifndef STACKGUARD	94	#ifndef CORO_STACKGUARD
80	# define STACKGUARD 0	95	# define CORO_STACKGUARD 0
81	#endif	96	#endif
82		97
83	/* prefer perl internal functions over our own? */	98	/* prefer perl internal functions over our own? */
84	#ifndef PREFER_PERL_FUNCTIONS	99	#ifndef CORO_PREFER_PERL_FUNCTIONS
85	# define PREFER_PERL_FUNCTIONS 0	100	# define CORO_PREFER_PERL_FUNCTIONS 0
86	#endif	101	#endif
87		102
88	/* The next macro should declare a variable stacklevel that contains and approximation	103	/* The next macros try to return the current stack pointer, in an as
89	* to the current C stack pointer. Its property is that it changes with each call	104	* portable way as possible. */
90	* and should be unique. */
91	#define dSTACKLEVEL int stacklevel	105	#define dSTACKLEVEL volatile char stacklevel
92	#define STACKLEVEL ((void *)&stacklevel)	106	#define STACKLEVEL ((void *)&stacklevel)
93		107
94	#define IN_DESTRUCT (PL_main_cv == Nullcv)	108	#define IN_DESTRUCT (PL_main_cv == Nullcv)
95		109
96	#if __GNUC__ >= 3	110	#if __GNUC__ >= 3
97	# define attribute(x) __attribute__(x)	111	# define attribute(x) __attribute__(x)
98	# define BARRIER __asm__ __volatile__ ("" : : : "memory")	112	# define BARRIER __asm__ __volatile__ ("" : : : "memory")
		113	# define expect(expr,value) __builtin_expect ((expr),(value))
99	#else	114	#else
100	# define attribute(x)	115	# define attribute(x)
101	# define BARRIER	116	# define BARRIER
		117	# define expect(expr,value) (expr)
102	#endif	118	#endif
		119
		120	#define expect_false(expr) expect ((expr) != 0, 0)
		121	#define expect_true(expr) expect ((expr) != 0, 1)
103		122
104	#define NOINLINE attribute ((noinline))	123	#define NOINLINE attribute ((noinline))
105		124
106	#include "CoroAPI.h"	125	#include "CoroAPI.h"
107		126
…		…
121	I32 laststype;	140	I32 laststype;
122	int laststatval;	141	int laststatval;
123	Stat_t statcache;	142	Stat_t statcache;
124	};	143	};
125		144
		145	static size_t coro_stacksize = CORO_STACKSIZE;
126	static struct CoroAPI coroapi;	146	static struct CoroAPI coroapi;
127	static AV main_mainstack; / used to differentiate between $main and others */	147	static AV main_mainstack; / used to differentiate between $main and others */
		148	static JMPENV *main_top_env;
128	static HV coro_state_stash, coro_stash;	149	static HV coro_state_stash, coro_stash;
129	static SV coro_mortal; / will be freed after next transfer */	150	static SV coro_mortal; / will be freed after next transfer */
130		151
		152	static GV irsgv; / $/ */
		153	static GV stdoutgv; / STDOUT /
		154
		155	static HV hv_sig; / %SIG */
		156	static SV *sv_diehook;
		157	static SV *sv_warnhook;
		158
		159	/* async_pool helper stuff */
		160	static SV *sv_pool_rss;
		161	static SV *sv_pool_size;
		162	static AV *av_async_pool;
		163
131	static struct coro_cctx *cctx_first;	164	static struct coro_cctx *cctx_first;
132	static int cctx_count, cctx_idle;	165	static int cctx_count, cctx_idle;
		166
		167	enum {
		168	CC_MAPPED = 0x01,
		169	CC_NOREUSE = 0x02, /* throw this away after tracing */
		170	CC_TRACE = 0x04,
		171	CC_TRACE_SUB = 0x08, /* trace sub calls */
		172	CC_TRACE_LINE = 0x10, /* trace each statement */
		173	CC_TRACE_ALL = CC_TRACE_SUB \| CC_TRACE_LINE,
		174	};
133		175
134	/* this is a structure representing a c-level coroutine */	176	/* this is a structure representing a c-level coroutine */
135	typedef struct coro_cctx {	177	typedef struct coro_cctx {
136	struct coro_cctx *next;	178	struct coro_cctx *next;
137		179
138	/* the stack */	180	/* the stack */
139	void *sptr;	181	void *sptr;
140	long ssize; /* positive == mmap, otherwise malloc */	182	size_t ssize;
141		183
142	/* cpu state */	184	/* cpu state */
143	void idle_sp; / sp of top-level transfer/schedule/cede call */	185	void idle_sp; / sp of top-level transfer/schedule/cede call */
144	JMPENV idle_te; / same as idle_sp, but for top_env, TODO: remove once stable */	186	JMPENV idle_te; / same as idle_sp, but for top_env, TODO: remove once stable */
145	JMPENV *top_env;	187	JMPENV *top_env;
146	coro_context cctx;	188	coro_context cctx;
147		189
148	int inuse;
149
150	#if USE_VALGRIND	190	#if CORO_USE_VALGRIND
151	int valgrind_id;	191	int valgrind_id;
152	#endif	192	#endif
		193	unsigned char flags;
153	} coro_cctx;	194	} coro_cctx;
154		195
155	enum {	196	enum {
156	CF_RUNNING = 0x0001, /* coroutine is running */	197	CF_RUNNING = 0x0001, /* coroutine is running */
157	CF_READY = 0x0002, /* coroutine is ready */	198	CF_READY = 0x0002, /* coroutine is ready */
158	CF_NEW = 0x0004, /* has never been switched to */	199	CF_NEW = 0x0004, /* has never been switched to */
159	CF_DESTROYED = 0x0008, /* coroutine data has been freed */	200	CF_DESTROYED = 0x0008, /* coroutine data has been freed */
160	};	201	};
161		202
		203	/* the structure where most of the perl state is stored, overlaid on the cxstack */
		204	typedef struct {
		205	SV *defsv;
		206	AV *defav;
		207	SV *errsv;
		208	SV *irsgv;
		209	#define VAR(name,type) type name;
		210	# include "state.h"
		211	#undef VAR
		212	} perl_slots;
		213
		214	#define SLOT_COUNT ((sizeof (perl_slots) + sizeof (PERL_CONTEXT) - 1) / sizeof (PERL_CONTEXT))
		215
162	/* this is a structure representing a perl-level coroutine */	216	/* this is a structure representing a perl-level coroutine */
163	struct coro {	217	struct coro {
164	/* the c coroutine allocated to this perl coroutine, if any */	218	/* the c coroutine allocated to this perl coroutine, if any */
165	coro_cctx *cctx;	219	coro_cctx *cctx;
166		220
		221	/* process data */
		222	AV *mainstack;
		223	perl_slots slot; / basically the saved sp */
		224
167	/* data associated with this coroutine (initial args) */	225	AV args; / data associated with this coroutine (initial args) */
168	AV *args;	226	int refcnt; /* coroutines are refcounted, yes */
169	int refcnt;
170	int save; /* CORO_SAVE flags */
171	int flags; /* CF_ flags */	227	int flags; /* CF_ flags */
		228	HV hv; / the perl hash associated with this coro, if any */
172		229
173	/* optionally saved, might be zero */	230	/* statistics */
174	AV defav; / @_ */	231	int usecount; /* number of transfers to this coro */
175	SV defsv; / $_ */
176	SV errsv; / $@ */
177	SV irssv; / $/ */
178	SV irssv_sv; / real $/ cache */
179
180	#define VAR(name,type) type name;
181	# include "state.h"
182	#undef VAR
183		232
184	/* coro process data */	233	/* coro process data */
185	int prio;	234	int prio;
		235	SV throw; / exception to be thrown */
		236
		237	/* async_pool */
		238	SV *saved_deffh;
		239
		240	/* linked list */
		241	struct coro next, prev;
186	};	242	};
187		243
188	typedef struct coro *Coro__State;	244	typedef struct coro *Coro__State;
189	typedef struct coro *Coro__State_or_hashref;	245	typedef struct coro *Coro__State_or_hashref;
190		246
…		…
199		255
200	/* for Coro.pm */	256	/* for Coro.pm */
201	static SV *coro_current;	257	static SV *coro_current;
202	static AV *coro_ready [PRIO_MAX-PRIO_MIN+1];	258	static AV *coro_ready [PRIO_MAX-PRIO_MIN+1];
203	static int coro_nready;	259	static int coro_nready;
		260	static struct coro *coro_first;
204		261
205	/ lowlevel stuff ********************************************************/	262	/ lowlevel stuff ********************************************************/
206		263
		264	static SV *
		265	coro_get_sv (pTHX_ const char *name, int create)
		266	{
		267	#if PERL_VERSION_ATLEAST (5,9,0)
		268	/* silence stupid and wrong 5.10 warning that I am unable to switch off */
		269	get_sv (name, create);
		270	#endif
		271	return get_sv (name, create);
		272	}
		273
207	static AV *	274	static AV *
		275	coro_get_av (pTHX_ const char *name, int create)
		276	{
		277	#if PERL_VERSION_ATLEAST (5,9,0)
		278	/* silence stupid and wrong 5.10 warning that I am unable to switch off */
		279	get_av (name, create);
		280	#endif
		281	return get_av (name, create);
		282	}
		283
		284	static HV *
		285	coro_get_hv (pTHX_ const char *name, int create)
		286	{
		287	#if PERL_VERSION_ATLEAST (5,9,0)
		288	/* silence stupid and wrong 5.10 warning that I am unable to switch off */
		289	get_hv (name, create);
		290	#endif
		291	return get_hv (name, create);
		292	}
		293
		294	static AV *
208	coro_clone_padlist (CV *cv)	295	coro_clone_padlist (pTHX_ CV *cv)
209	{	296	{
210	AV *padlist = CvPADLIST (cv);	297	AV *padlist = CvPADLIST (cv);
211	AV newpadlist, newpad;	298	AV newpadlist, newpad;
212		299
213	newpadlist = newAV ();	300	newpadlist = newAV ();
…		…
225		312
226	return newpadlist;	313	return newpadlist;
227	}	314	}
228		315
229	static void	316	static void
230	free_padlist (AV *padlist)	317	free_padlist (pTHX_ AV *padlist)
231	{	318	{
232	/* may be during global destruction */	319	/* may be during global destruction */
233	if (SvREFCNT (padlist))	320	if (SvREFCNT (padlist))
234	{	321	{
235	I32 i = AvFILLp (padlist);	322	I32 i = AvFILLp (padlist);
…		…
256	AV *padlist;	343	AV *padlist;
257	AV av = (AV )mg->mg_obj;	344	AV av = (AV )mg->mg_obj;
258		345
259	/* casting is fun. */	346	/* casting is fun. */
260	while (&PL_sv_undef != (SV )(padlist = (AV )av_pop (av)))	347	while (&PL_sv_undef != (SV )(padlist = (AV )av_pop (av)))
261	free_padlist (padlist);	348	free_padlist (aTHX_ padlist);
262		349
263	SvREFCNT_dec (av);	350	SvREFCNT_dec (av);
264		351
265	return 0;	352	return 0;
266	}	353	}
…		…
274	? SvMAGIC (cv)->mg_type == PERL_MAGIC_coro \	361	? SvMAGIC (cv)->mg_type == PERL_MAGIC_coro \
275	? SvMAGIC (cv) \	362	? SvMAGIC (cv) \
276	: mg_find ((SV *)cv, PERL_MAGIC_coro) \	363	: mg_find ((SV *)cv, PERL_MAGIC_coro) \
277	: 0	364	: 0
278		365
		366	static struct coro *
		367	SvSTATE_ (pTHX_ SV *coro)
		368	{
		369	HV *stash;
		370	MAGIC *mg;
		371
		372	if (SvROK (coro))
		373	coro = SvRV (coro);
		374
		375	if (expect_false (SvTYPE (coro) != SVt_PVHV))
		376	croak ("Coro::State object required");
		377
		378	stash = SvSTASH (coro);
		379	if (expect_false (stash != coro_stash && stash != coro_state_stash))
		380	{
		381	/* very slow, but rare, check */
		382	if (!sv_derived_from (sv_2mortal (newRV_inc (coro)), "Coro::State"))
		383	croak ("Coro::State object required");
		384	}
		385
		386	mg = CORO_MAGIC (coro);
		387	return (struct coro *)mg->mg_ptr;
		388	}
		389
		390	#define SvSTATE(sv) SvSTATE_ (aTHX_ (sv))
		391
279	/* the next two functions merely cache the padlists */	392	/* the next two functions merely cache the padlists */
280	static void	393	static void
281	get_padlist (CV *cv)	394	get_padlist (pTHX_ CV *cv)
282	{	395	{
283	MAGIC *mg = CORO_MAGIC (cv);	396	MAGIC *mg = CORO_MAGIC (cv);
284	AV *av;	397	AV *av;
285		398
286	if (mg && AvFILLp ((av = (AV *)mg->mg_obj)) >= 0)	399	if (expect_true (mg && AvFILLp ((av = (AV *)mg->mg_obj)) >= 0))
287	CvPADLIST (cv) = (AV *)AvARRAY (av)[AvFILLp (av)--];	400	CvPADLIST (cv) = (AV *)AvARRAY (av)[AvFILLp (av)--];
288	else	401	else
289	{	402	{
290	#if PREFER_PERL_FUNCTIONS	403	#if CORO_PREFER_PERL_FUNCTIONS
291	/* this is probably cleaner, but also slower? */	404	/* this is probably cleaner, but also slower? */
292	CV *cp = Perl_cv_clone (cv);	405	CV *cp = Perl_cv_clone (cv);
293	CvPADLIST (cv) = CvPADLIST (cp);	406	CvPADLIST (cv) = CvPADLIST (cp);
294	CvPADLIST (cp) = 0;	407	CvPADLIST (cp) = 0;
295	SvREFCNT_dec (cp);	408	SvREFCNT_dec (cp);
296	#else	409	#else
297	CvPADLIST (cv) = coro_clone_padlist (cv);	410	CvPADLIST (cv) = coro_clone_padlist (aTHX_ cv);
298	#endif	411	#endif
299	}	412	}
300	}	413	}
301		414
302	static void	415	static void
303	put_padlist (CV *cv)	416	put_padlist (pTHX_ CV *cv)
304	{	417	{
305	MAGIC *mg = CORO_MAGIC (cv);	418	MAGIC *mg = CORO_MAGIC (cv);
306	AV *av;	419	AV *av;
307		420
308	if (!mg)	421	if (expect_false (!mg))
309	{	422	{
310	sv_magic ((SV *)cv, 0, PERL_MAGIC_coro, 0, 0);	423	sv_magic ((SV *)cv, 0, PERL_MAGIC_coro, 0, 0);
311	mg = mg_find ((SV *)cv, PERL_MAGIC_coro);	424	mg = mg_find ((SV *)cv, PERL_MAGIC_coro);
312	mg->mg_virtual = &vtbl_coro;	425	mg->mg_virtual = &vtbl_coro;
313	mg->mg_obj = (SV *)newAV ();	426	mg->mg_obj = (SV *)newAV ();
314	}	427	}
315		428
316	av = (AV *)mg->mg_obj;	429	av = (AV *)mg->mg_obj;
317		430
318	if (AvFILLp (av) >= AvMAX (av))	431	if (expect_false (AvFILLp (av) >= AvMAX (av)))
319	av_extend (av, AvMAX (av) + 1);	432	av_extend (av, AvMAX (av) + 1);
320		433
321	AvARRAY (av)[++AvFILLp (av)] = (SV *)CvPADLIST (cv);	434	AvARRAY (av)[++AvFILLp (av)] = (SV *)CvPADLIST (cv);
322	}	435	}
323		436
324	/ load & save, init *****************************************************/	437	/ load & save, init *****************************************************/
325		438
326	#define SB do {
327	#define SE } while (0)
328
329	#define REPLACE_SV(sv,val) SB SvREFCNT_dec (sv); (sv) = (val); (val) = 0; SE
330
331	static void	439	static void
332	load_perl (Coro__State c)	440	load_perl (pTHX_ Coro__State c)
333	{	441	{
		442	perl_slots *slot = c->slot;
		443	c->slot = 0;
		444
		445	PL_mainstack = c->mainstack;
		446
		447	GvSV (PL_defgv) = slot->defsv;
		448	GvAV (PL_defgv) = slot->defav;
		449	GvSV (PL_errgv) = slot->errsv;
		450	GvSV (irsgv) = slot->irsgv;
		451
334	#define VAR(name,type) PL_ ## name = c->name;	452	#define VAR(name,type) PL_ ## name = slot->name;
335	# include "state.h"	453	# include "state.h"
336	#undef VAR	454	#undef VAR
337		455
338	if (c->defav) REPLACE_SV (GvAV (PL_defgv), c->defav);	456	/hv_store (hv_sig, "__DIE__" , sizeof ("__DIE__" ) - 1, SvREFCNT_inc (sv_diehook ), 0);/
339	if (c->defsv) REPLACE_SV (DEFSV , c->defsv);	457	/hv_store (hv_sig, "__WARN__", sizeof ("__WARN__") - 1, SvREFCNT_inc (sv_warnhook), 0);/
340	if (c->errsv) REPLACE_SV (ERRSV , c->errsv);
341	if (c->irssv)
342	{
343	if (c->irssv == PL_rs \|\| sv_eq (PL_rs, c->irssv))
344	SvREFCNT_dec (c->irssv);
345	else
346	{
347	REPLACE_SV (PL_rs, c->irssv);
348	if (!c->irssv_sv) c->irssv_sv = get_sv ("/", 0);
349	sv_setsv (c->irssv_sv, PL_rs);
350	}
351	}
352		458
353	{	459	{
354	dSP;	460	dSP;
		461
355	CV *cv;	462	CV *cv;
356		463
357	/* now do the ugly restore mess */	464	/* now do the ugly restore mess */
358	while ((cv = (CV *)POPs))	465	while (expect_true (cv = (CV *)POPs))
359	{	466	{
360	put_padlist (cv); /* mark this padlist as available */	467	put_padlist (aTHX_ cv); /* mark this padlist as available */
361	CvDEPTH (cv) = PTR2IV (POPs);	468	CvDEPTH (cv) = PTR2IV (POPs);
362	CvPADLIST (cv) = (AV *)POPs;	469	CvPADLIST (cv) = (AV *)POPs;
363	}	470	}
364		471
365	PUTBACK;	472	PUTBACK;
366	}	473	}
367	}	474	}
368		475
369	static void	476	static void
370	save_perl (Coro__State c)	477	save_perl (pTHX_ Coro__State c)
371	{	478	{
372	{	479	{
373	dSP;	480	dSP;
374	I32 cxix = cxstack_ix;	481	I32 cxix = cxstack_ix;
375	PERL_CONTEXT *ccstk = cxstack;	482	PERL_CONTEXT *ccstk = cxstack;
…		…
378	/*	485	/*
379	* the worst thing you can imagine happens first - we have to save	486	* the worst thing you can imagine happens first - we have to save
380	* (and reinitialize) all cv's in the whole callchain :(	487	* (and reinitialize) all cv's in the whole callchain :(
381	*/	488	*/
382		489
383	EXTEND (SP, 3 + 1);
384	PUSHs (Nullsv);	490	XPUSHs (Nullsv);
385	/* this loop was inspired by pp_caller */	491	/* this loop was inspired by pp_caller */
386	for (;;)	492	for (;;)
387	{	493	{
388	while (cxix >= 0)	494	while (expect_true (cxix >= 0))
389	{	495	{
390	PERL_CONTEXT *cx = &ccstk[cxix--];	496	PERL_CONTEXT *cx = &ccstk[cxix--];
391		497
392	if (CxTYPE (cx) == CXt_SUB)	498	if (expect_true (CxTYPE (cx) == CXt_SUB \|\| CxTYPE (cx) == CXt_FORMAT))
393	{	499	{
394	CV *cv = cx->blk_sub.cv;	500	CV *cv = cx->blk_sub.cv;
395		501
396	if (CvDEPTH (cv))	502	if (expect_true (CvDEPTH (cv)))
397	{	503	{
398	EXTEND (SP, 3);	504	EXTEND (SP, 3);
399	PUSHs ((SV *)CvPADLIST (cv));	505	PUSHs ((SV *)CvPADLIST (cv));
400	PUSHs (INT2PTR (SV *, CvDEPTH (cv)));	506	PUSHs (INT2PTR (SV *, CvDEPTH (cv)));
401	PUSHs ((SV *)cv);	507	PUSHs ((SV *)cv);
402		508
403	CvDEPTH (cv) = 0;	509	CvDEPTH (cv) = 0;
404	get_padlist (cv);	510	get_padlist (aTHX_ cv);
405	}	511	}
406	}	512	}
407	}	513	}
408		514
409	if (top_si->si_type == PERLSI_MAIN)	515	if (expect_true (top_si->si_type == PERLSI_MAIN))
410	break;	516	break;
411		517
412	top_si = top_si->si_prev;	518	top_si = top_si->si_prev;
413	ccstk = top_si->si_cxstack;	519	ccstk = top_si->si_cxstack;
414	cxix = top_si->si_cxix;	520	cxix = top_si->si_cxix;
415	}	521	}
416		522
417	PUTBACK;	523	PUTBACK;
418	}	524	}
419		525
420	c->defav = c->save & CORO_SAVE_DEFAV ? (AV *)SvREFCNT_inc (GvAV (PL_defgv)) : 0;	526	/* allocate some space on the context stack for our purposes */
421	c->defsv = c->save & CORO_SAVE_DEFSV ? SvREFCNT_inc (DEFSV) : 0;	527	/* we manually unroll here, as usually 2 slots is enough */
422	c->errsv = c->save & CORO_SAVE_ERRSV ? SvREFCNT_inc (ERRSV) : 0;	528	if (SLOT_COUNT >= 1) CXINC;
423	c->irssv = c->save & CORO_SAVE_IRSSV ? SvREFCNT_inc (PL_rs) : 0;	529	if (SLOT_COUNT >= 2) CXINC;
		530	if (SLOT_COUNT >= 3) CXINC;
		531	{
		532	int i;
		533	for (i = 3; i < SLOT_COUNT; ++i)
		534	CXINC;
		535	}
		536	cxstack_ix -= SLOT_COUNT; /* undo allocation */
424		537
		538	c->mainstack = PL_mainstack;
		539
		540	{
		541	perl_slots slot = c->slot = (perl_slots )(cxstack + cxstack_ix + 1);
		542
		543	slot->defav = GvAV (PL_defgv);
		544	slot->defsv = DEFSV;
		545	slot->errsv = ERRSV;
		546	slot->irsgv = GvSV (irsgv);
		547
425	#define VAR(name,type)c->name = PL_ ## name;	548	#define VAR(name,type) slot->name = PL_ ## name;
426	# include "state.h"	549	# include "state.h"
427	#undef VAR	550	#undef VAR
		551	}
428	}	552	}
429		553
430	/*	554	/*
431	* allocate various perl stacks. This is an exact copy	555	* allocate various perl stacks. This is an exact copy
432	* of perl.c:init_stacks, except that it uses less memory	556	* of perl.c:init_stacks, except that it uses less memory
433	* on the (sometimes correct) assumption that coroutines do	557	* on the (sometimes correct) assumption that coroutines do
434	* not usually need a lot of stackspace.	558	* not usually need a lot of stackspace.
435	*/	559	*/
436	#if PREFER_PERL_FUNCTIONS	560	#if CORO_PREFER_PERL_FUNCTIONS
437	# define coro_init_stacks init_stacks	561	# define coro_init_stacks init_stacks
438	#else	562	#else
439	static void	563	static void
440	coro_init_stacks ()	564	coro_init_stacks (pTHX)
441	{	565	{
442	PL_curstackinfo = new_stackinfo(128, 1024/sizeof(PERL_CONTEXT));	566	PL_curstackinfo = new_stackinfo(32, 8);
443	PL_curstackinfo->si_type = PERLSI_MAIN;	567	PL_curstackinfo->si_type = PERLSI_MAIN;
444	PL_curstack = PL_curstackinfo->si_stack;	568	PL_curstack = PL_curstackinfo->si_stack;
445	PL_mainstack = PL_curstack; /* remember in case we switch stacks */	569	PL_mainstack = PL_curstack; /* remember in case we switch stacks */
446		570
447	PL_stack_base = AvARRAY(PL_curstack);	571	PL_stack_base = AvARRAY(PL_curstack);
448	PL_stack_sp = PL_stack_base;	572	PL_stack_sp = PL_stack_base;
449	PL_stack_max = PL_stack_base + AvMAX(PL_curstack);	573	PL_stack_max = PL_stack_base + AvMAX(PL_curstack);
450		574
451	New(50,PL_tmps_stack,128,SV*);	575	New(50,PL_tmps_stack,32,SV*);
452	PL_tmps_floor = -1;	576	PL_tmps_floor = -1;
453	PL_tmps_ix = -1;	577	PL_tmps_ix = -1;
454	PL_tmps_max = 128;	578	PL_tmps_max = 32;
455		579
456	New(54,PL_markstack,32,I32);	580	New(54,PL_markstack,16,I32);
457	PL_markstack_ptr = PL_markstack;	581	PL_markstack_ptr = PL_markstack;
458	PL_markstack_max = PL_markstack + 32;	582	PL_markstack_max = PL_markstack + 16;
459		583
460	#ifdef SET_MARK_OFFSET	584	#ifdef SET_MARK_OFFSET
461	SET_MARK_OFFSET;	585	SET_MARK_OFFSET;
462	#endif	586	#endif
463		587
464	New(54,PL_scopestack,32,I32);	588	New(54,PL_scopestack,8,I32);
465	PL_scopestack_ix = 0;	589	PL_scopestack_ix = 0;
466	PL_scopestack_max = 32;	590	PL_scopestack_max = 8;
467		591
468	New(54,PL_savestack,64,ANY);	592	New(54,PL_savestack,24,ANY);
469	PL_savestack_ix = 0;	593	PL_savestack_ix = 0;
470	PL_savestack_max = 64;	594	PL_savestack_max = 24;
471		595
472	#if !PERL_VERSION_ATLEAST (5,9,0)	596	#if !PERL_VERSION_ATLEAST (5,9,0)
473	New(54,PL_retstack,16,OP*);	597	New(54,PL_retstack,4,OP*);
474	PL_retstack_ix = 0;	598	PL_retstack_ix = 0;
475	PL_retstack_max = 16;	599	PL_retstack_max = 4;
476	#endif	600	#endif
477	}	601	}
478	#endif	602	#endif
479		603
480	/*	604	/*
481	* destroy the stacks, the callchain etc...	605	* destroy the stacks, the callchain etc...
482	*/	606	*/
483	static void	607	static void
484	coro_destroy_stacks ()	608	coro_destroy_stacks (pTHX)
485	{	609	{
486	if (!IN_DESTRUCT)
487	{
488	/* restore all saved variables and stuff */
489	LEAVE_SCOPE (0);
490	assert (PL_tmps_floor == -1);
491
492	/* free all temporaries */
493	FREETMPS;
494	assert (PL_tmps_ix == -1);
495
496	/* unwind all extra stacks */
497	POPSTACK_TO (PL_mainstack);
498
499	/* unwind main stack */
500	dounwind (-1);
501	}
502
503	while (PL_curstackinfo->si_next)	610	while (PL_curstackinfo->si_next)
504	PL_curstackinfo = PL_curstackinfo->si_next;	611	PL_curstackinfo = PL_curstackinfo->si_next;
505		612
506	while (PL_curstackinfo)	613	while (PL_curstackinfo)
507	{	614	{
…		…
522	#if !PERL_VERSION_ATLEAST (5,9,0)	629	#if !PERL_VERSION_ATLEAST (5,9,0)
523	Safefree (PL_retstack);	630	Safefree (PL_retstack);
524	#endif	631	#endif
525	}	632	}
526		633
		634	static size_t
		635	coro_rss (pTHX_ struct coro *coro)
		636	{
		637	size_t rss = sizeof (*coro);
		638
		639	if (coro->mainstack)
		640	{
		641	perl_slots tmp_slot;
		642	perl_slots *slot;
		643
		644	if (coro->flags & CF_RUNNING)
		645	{
		646	slot = &tmp_slot;
		647
		648	#define VAR(name,type) slot->name = PL_ ## name;
		649	# include "state.h"
		650	#undef VAR
		651	}
		652	else
		653	slot = coro->slot;
		654
		655	rss += sizeof (slot->curstackinfo);
		656	rss += (slot->curstackinfo->si_cxmax + 1) * sizeof (PERL_CONTEXT);
		657	rss += sizeof (SV) + sizeof (struct xpvav) + (1 + AvMAX (slot->curstack)) * sizeof (SV *);
		658	rss += slot->tmps_max * sizeof (SV *);
		659	rss += (slot->markstack_max - slot->markstack_ptr) * sizeof (I32);
		660	rss += slot->scopestack_max * sizeof (I32);
		661	rss += slot->savestack_max * sizeof (ANY);
		662
		663	#if !PERL_VERSION_ATLEAST (5,9,0)
		664	rss += slot->retstack_max * sizeof (OP *);
		665	#endif
		666	}
		667
		668	return rss;
		669	}
		670
527	/ coroutine stack handling **********************************************/	671	/ coroutine stack handling **********************************************/
528		672
529	static void	673	static void
530	setup_coro (struct coro *coro)	674	coro_setup (pTHX_ struct coro *coro)
531	{	675	{
532	/*	676	/*
533	* emulate part of the perl startup here.	677	* emulate part of the perl startup here.
534	*/	678	*/
535
536	coro_init_stacks ();	679	coro_init_stacks (aTHX);
537		680
		681	PL_runops = RUNOPS_DEFAULT;
538	PL_curcop = &PL_compiling;	682	PL_curcop = &PL_compiling;
539	PL_in_eval = EVAL_NULL;	683	PL_in_eval = EVAL_NULL;
		684	PL_comppad = 0;
540	PL_curpm = 0;	685	PL_curpm = 0;
		686	PL_curpad = 0;
541	PL_localizing = 0;	687	PL_localizing = 0;
542	PL_dirty = 0;	688	PL_dirty = 0;
543	PL_restartop = 0;	689	PL_restartop = 0;
		690	PL_diehook = 0; hv_store (hv_sig, "__DIE__" , sizeof ("__DIE__" ) - 1, SvREFCNT_inc (sv_diehook ), 0);
		691	PL_warnhook = 0; hv_store (hv_sig, "__WARN__", sizeof ("__WARN__") - 1, SvREFCNT_inc (sv_warnhook), 0);
		692
		693	GvSV (PL_defgv) = newSV (0);
		694	GvAV (PL_defgv) = coro->args; coro->args = 0;
		695	GvSV (PL_errgv) = newSV (0);
		696	GvSV (irsgv) = newSVpvn ("\n", 1); sv_magic (GvSV (irsgv), (SV *)irsgv, PERL_MAGIC_sv, "/", 0);
		697	PL_rs = newSVsv (GvSV (irsgv));
		698	PL_defoutgv = (GV *)SvREFCNT_inc (stdoutgv);
544		699
545	{	700	{
546	dSP;	701	dSP;
547	LOGOP myop;	702	LOGOP myop;
548		703
549	SvREFCNT_dec (GvAV (PL_defgv));
550	GvAV (PL_defgv) = coro->args; coro->args = 0;
551
552	Zero (&myop, 1, LOGOP);	704	Zero (&myop, 1, LOGOP);
553	myop.op_next = Nullop;	705	myop.op_next = Nullop;
554	myop.op_flags = OPf_WANT_VOID;	706	myop.op_flags = OPf_WANT_VOID;
555		707
556	PUSHMARK (SP);	708	PUSHMARK (SP);
557	XPUSHs ((SV *)get_cv ("Coro::State::_coro_init", FALSE));	709	XPUSHs (sv_2mortal (av_shift (GvAV (PL_defgv))));
558	PUTBACK;	710	PUTBACK;
559	PL_op = (OP *)&myop;	711	PL_op = (OP *)&myop;
560	PL_op = PL_ppaddr[OP_ENTERSUB](aTHX);	712	PL_op = PL_ppaddr[OP_ENTERSUB](aTHX);
561	SPAGAIN;	713	SPAGAIN;
562	}	714	}
563		715
564	ENTER; /* necessary e.g. for dounwind */	716	/* this newly created coroutine might be run on an existing cctx which most
		717	* likely was suspended in set_stacklevel, called from entersub.
		718	* set_stacklevl doesn't do anything on return, but entersub does LEAVE,
		719	* so we ENTER here for symmetry
		720	*/
		721	ENTER;
565	}	722	}
566		723
567	static void	724	static void
		725	coro_destroy (pTHX_ struct coro *coro)
		726	{
		727	if (!IN_DESTRUCT)
		728	{
		729	/* restore all saved variables and stuff */
		730	LEAVE_SCOPE (0);
		731	assert (PL_tmps_floor == -1);
		732
		733	/* free all temporaries */
		734	FREETMPS;
		735	assert (PL_tmps_ix == -1);
		736
		737	/* unwind all extra stacks */
		738	POPSTACK_TO (PL_mainstack);
		739
		740	/* unwind main stack */
		741	dounwind (-1);
		742	}
		743
		744	SvREFCNT_dec (GvSV (PL_defgv));
		745	SvREFCNT_dec (GvAV (PL_defgv));
		746	SvREFCNT_dec (GvSV (PL_errgv));
		747	SvREFCNT_dec (PL_defoutgv);
		748	SvREFCNT_dec (PL_rs);
		749	SvREFCNT_dec (GvSV (irsgv));
		750
		751	SvREFCNT_dec (PL_diehook);
		752	SvREFCNT_dec (PL_warnhook);
		753
		754	SvREFCNT_dec (coro->saved_deffh);
		755	SvREFCNT_dec (coro->throw);
		756
		757	coro_destroy_stacks (aTHX);
		758	}
		759
		760	static void
568	free_coro_mortal ()	761	free_coro_mortal (pTHX)
569	{	762	{
570	if (coro_mortal)	763	if (expect_true (coro_mortal))
571	{	764	{
572	SvREFCNT_dec (coro_mortal);	765	SvREFCNT_dec (coro_mortal);
573	coro_mortal = 0;	766	coro_mortal = 0;
574	}	767	}
575	}	768	}
576		769
		770	static int
		771	runops_trace (pTHX)
		772	{
		773	COP *oldcop = 0;
		774	int oldcxix = -2;
		775	struct coro coro = SvSTATE (coro_current); / trace cctx is tied to specific coro */
		776	coro_cctx *cctx = coro->cctx;
		777
		778	while ((PL_op = CALL_FPTR (PL_op->op_ppaddr) (aTHX)))
		779	{
		780	PERL_ASYNC_CHECK ();
		781
		782	if (cctx->flags & CC_TRACE_ALL)
		783	{
		784	if (PL_op->op_type == OP_LEAVESUB && cctx->flags & CC_TRACE_SUB)
		785	{
		786	PERL_CONTEXT *cx = &cxstack[cxstack_ix];
		787	SV bot, top;
		788	AV av = newAV (); / return values */
		789	SV **cb;
		790	dSP;
		791
		792	GV *gv = CvGV (cx->blk_sub.cv);
		793	SV *fullname = sv_2mortal (newSV (0));
		794	if (isGV (gv))
		795	gv_efullname3 (fullname, gv, 0);
		796
		797	bot = PL_stack_base + cx->blk_oldsp + 1;
		798	top = cx->blk_gimme == G_ARRAY ? SP + 1
		799	: cx->blk_gimme == G_SCALAR ? bot + 1
		800	: bot;
		801
		802	av_extend (av, top - bot);
		803	while (bot < top)
		804	av_push (av, SvREFCNT_inc (*bot++));
		805
		806	PL_runops = RUNOPS_DEFAULT;
		807	ENTER;
		808	SAVETMPS;
		809	EXTEND (SP, 3);
		810	PUSHMARK (SP);
		811	PUSHs (&PL_sv_no);
		812	PUSHs (fullname);
		813	PUSHs (sv_2mortal (newRV_noinc ((SV *)av)));
		814	PUTBACK;
		815	cb = hv_fetch ((HV *)SvRV (coro_current), "_trace_sub_cb", sizeof ("_trace_sub_cb") - 1, 0);
		816	if (cb) call_sv (*cb, G_KEEPERR \| G_EVAL \| G_VOID \| G_DISCARD);
		817	SPAGAIN;
		818	FREETMPS;
		819	LEAVE;
		820	PL_runops = runops_trace;
		821	}
		822
		823	if (oldcop != PL_curcop)
		824	{
		825	oldcop = PL_curcop;
		826
		827	if (PL_curcop != &PL_compiling)
		828	{
		829	SV **cb;
		830
		831	if (oldcxix != cxstack_ix && cctx->flags & CC_TRACE_SUB)
		832	{
		833	PERL_CONTEXT *cx = &cxstack[cxstack_ix];
		834
		835	if (CxTYPE (cx) == CXt_SUB && oldcxix < cxstack_ix)
		836	{
		837	runops_proc_t old_runops = PL_runops;
		838	dSP;
		839	GV *gv = CvGV (cx->blk_sub.cv);
		840	SV *fullname = sv_2mortal (newSV (0));
		841
		842	if (isGV (gv))
		843	gv_efullname3 (fullname, gv, 0);
		844
		845	PL_runops = RUNOPS_DEFAULT;
		846	ENTER;
		847	SAVETMPS;
		848	EXTEND (SP, 3);
		849	PUSHMARK (SP);
		850	PUSHs (&PL_sv_yes);
		851	PUSHs (fullname);
		852	PUSHs (cx->blk_sub.hasargs ? sv_2mortal (newRV_inc ((SV *)cx->blk_sub.argarray)) : &PL_sv_undef);
		853	PUTBACK;
		854	cb = hv_fetch ((HV *)SvRV (coro_current), "_trace_sub_cb", sizeof ("_trace_sub_cb") - 1, 0);
		855	if (cb) call_sv (*cb, G_KEEPERR \| G_EVAL \| G_VOID \| G_DISCARD);
		856	SPAGAIN;
		857	FREETMPS;
		858	LEAVE;
		859	PL_runops = runops_trace;
		860	}
		861
		862	oldcxix = cxstack_ix;
		863	}
		864
		865	if (cctx->flags & CC_TRACE_LINE)
		866	{
		867	dSP;
		868
		869	PL_runops = RUNOPS_DEFAULT;
		870	ENTER;
		871	SAVETMPS;
		872	EXTEND (SP, 3);
		873	PL_runops = RUNOPS_DEFAULT;
		874	PUSHMARK (SP);
		875	PUSHs (sv_2mortal (newSVpv (OutCopFILE (oldcop), 0)));
		876	PUSHs (sv_2mortal (newSViv (CopLINE (oldcop))));
		877	PUTBACK;
		878	cb = hv_fetch ((HV *)SvRV (coro_current), "_trace_line_cb", sizeof ("_trace_line_cb") - 1, 0);
		879	if (cb) call_sv (*cb, G_KEEPERR \| G_EVAL \| G_VOID \| G_DISCARD);
		880	SPAGAIN;
		881	FREETMPS;
		882	LEAVE;
		883	PL_runops = runops_trace;
		884	}
		885	}
		886	}
		887	}
		888	}
		889
		890	TAINT_NOT;
		891	return 0;
		892	}
		893
577	/* inject a fake call to Coro::State::_cctx_init into the execution */	894	/* inject a fake call to Coro::State::_cctx_init into the execution */
		895	/* _cctx_init should be careful, as it could be called at almost any time */
		896	/* during execution of a perl program */
578	static void NOINLINE	897	static void NOINLINE
579	prepare_cctx (coro_cctx *cctx)	898	cctx_prepare (pTHX_ coro_cctx *cctx)
580	{	899	{
581	dSP;	900	dSP;
582	LOGOP myop;	901	LOGOP myop;
		902
		903	PL_top_env = &PL_start_env;
		904
		905	if (cctx->flags & CC_TRACE)
		906	PL_runops = runops_trace;
583		907
584	Zero (&myop, 1, LOGOP);	908	Zero (&myop, 1, LOGOP);
585	myop.op_next = PL_op;	909	myop.op_next = PL_op;
586	myop.op_flags = OPf_WANT_VOID \| OPf_STACKED;	910	myop.op_flags = OPf_WANT_VOID \| OPf_STACKED;
587		911
…		…
593	PL_op = (OP *)&myop;	917	PL_op = (OP *)&myop;
594	PL_op = PL_ppaddr[OP_ENTERSUB](aTHX);	918	PL_op = PL_ppaddr[OP_ENTERSUB](aTHX);
595	SPAGAIN;	919	SPAGAIN;
596	}	920	}
597		921
		922	/*
		923	* this is a _very_ stripped down perl interpreter ;)
		924	*/
598	static void	925	static void
599	coro_run (void *arg)	926	cctx_run (void *arg)
600	{	927	{
		928	dTHX;
		929
601	/* coro_run is the alternative tail of transfer(), so unlock here. */	930	/* cctx_run is the alternative tail of transfer(), so unlock here. */
602	UNLOCK;	931	UNLOCK;
603		932
604	/*	933	/* we now skip the entersub that lead to transfer() */
605	* this is a _very_ stripped down perl interpreter ;)	934	PL_op = PL_op->op_next;
606	*/
607	PL_top_env = &PL_start_env;
608		935
609	/* inject call to cctx_init */	936	/* inject a fake subroutine call to cctx_init */
610	prepare_cctx ((coro_cctx *)arg);	937	cctx_prepare (aTHX_ (coro_cctx *)arg);
611		938
612	/* somebody will hit me for both perl_run and PL_restartop */	939	/* somebody or something will hit me for both perl_run and PL_restartop */
613	PL_restartop = PL_op;	940	PL_restartop = PL_op;
614	perl_run (PL_curinterp);	941	perl_run (PL_curinterp);
615		942
616	fputs ("FATAL: C coroutine fell over the edge of the world, aborting. Did you call exit in a coroutine?\n", stderr);	943	/*
617	abort ();	944	* If perl-run returns we assume exit() was being called or the coro
		945	* fell off the end, which seems to be the only valid (non-bug)
		946	* reason for perl_run to return. We try to exit by jumping to the
		947	* bootstrap-time "top" top_env, as we cannot restore the "main"
		948	* coroutine as Coro has no such concept
		949	*/
		950	PL_top_env = main_top_env;
		951	JMPENV_JUMP (2); /* I do not feel well about the hardcoded 2 at all */
618	}	952	}
619		953
620	static coro_cctx *	954	static coro_cctx *
621	cctx_new ()	955	cctx_new ()
622	{	956	{
623	coro_cctx *cctx;	957	coro_cctx *cctx;
		958	void *stack_start;
		959	size_t stack_size;
624		960
625	++cctx_count;	961	++cctx_count;
626		962
627	Newz (0, cctx, 1, coro_cctx);	963	Newz (0, cctx, 1, coro_cctx);
628		964
629	#if HAVE_MMAP	965	#if HAVE_MMAP
630
631	cctx->ssize = ((STACKSIZE * sizeof (long) + PAGESIZE - 1) / PAGESIZE + STACKGUARD) * PAGESIZE;	966	cctx->ssize = ((coro_stacksize * sizeof (long) + PAGESIZE - 1) / PAGESIZE + CORO_STACKGUARD) * PAGESIZE;
632	/* mmap supposedly does allocate-on-write for us */	967	/* mmap supposedly does allocate-on-write for us */
633	cctx->sptr = mmap (0, cctx->ssize, PROT_EXEC\|PROT_READ\|PROT_WRITE, MAP_PRIVATE\|MAP_ANONYMOUS, 0, 0);	968	cctx->sptr = mmap (0, cctx->ssize, PROT_EXEC\|PROT_READ\|PROT_WRITE, MAP_PRIVATE\|MAP_ANONYMOUS, 0, 0);
634		969
635	if (cctx->sptr == (void *)-1)	970	if (cctx->sptr != (void *)-1)
636	{
637	perror ("FATAL: unable to mmap stack for coroutine");
638	_exit (EXIT_FAILURE);
639	}	971	{
640
641	# if STACKGUARD	972	# if CORO_STACKGUARD
642	mprotect (cctx->sptr, STACKGUARD * PAGESIZE, PROT_NONE);	973	mprotect (cctx->sptr, CORO_STACKGUARD * PAGESIZE, PROT_NONE);
643	# endif	974	# endif
		975	stack_start = CORO_STACKGUARD * PAGESIZE + (char *)cctx->sptr;
		976	stack_size = cctx->ssize - CORO_STACKGUARD * PAGESIZE;
		977	cctx->flags \|= CC_MAPPED;
		978	}
		979	else
		980	#endif
		981	{
		982	cctx->ssize = coro_stacksize * (long)sizeof (long);
		983	New (0, cctx->sptr, coro_stacksize, long);
644		984
645	#else
646
647	cctx->ssize = STACKSIZE * (long)sizeof (long);
648	New (0, cctx->sptr, STACKSIZE, long);
649
650	if (!cctx->sptr)	985	if (!cctx->sptr)
651	{	986	{
652	perror ("FATAL: unable to malloc stack for coroutine");	987	perror ("FATAL: unable to allocate stack for coroutine");
653	_exit (EXIT_FAILURE);	988	_exit (EXIT_FAILURE);
654	}	989	}
655		990
656	#endif	991	stack_start = cctx->sptr;
		992	stack_size = cctx->ssize;
		993	}
657		994
658	#if USE_VALGRIND	995	REGISTER_STACK (cctx, (char )stack_start, (char )stack_start + stack_size);
659	cctx->valgrind_id = VALGRIND_STACK_REGISTER (	996	coro_create (&cctx->cctx, cctx_run, (void *)cctx, stack_start, stack_size);
660	STACKGUARD * PAGESIZE + (char *)cctx->sptr,
661	cctx->ssize + (char *)cctx->sptr
662	);
663	#endif
664
665	coro_create (&cctx->cctx, coro_run, (void *)cctx, cctx->sptr, cctx->ssize);
666		997
667	return cctx;	998	return cctx;
668	}	999	}
669		1000
670	static void	1001	static void
…		…
673	if (!cctx)	1004	if (!cctx)
674	return;	1005	return;
675		1006
676	--cctx_count;	1007	--cctx_count;
677		1008
678	#if USE_VALGRIND	1009	#if CORO_USE_VALGRIND
679	VALGRIND_STACK_DEREGISTER (cctx->valgrind_id);	1010	VALGRIND_STACK_DEREGISTER (cctx->valgrind_id);
680	#endif	1011	#endif
681		1012
682	#if HAVE_MMAP	1013	#if HAVE_MMAP
		1014	if (cctx->flags & CC_MAPPED)
683	munmap (cctx->sptr, cctx->ssize);	1015	munmap (cctx->sptr, cctx->ssize);
684	#else	1016	else
		1017	#endif
685	Safefree (cctx->sptr);	1018	Safefree (cctx->sptr);
686	#endif
687		1019
688	Safefree (cctx);	1020	Safefree (cctx);
689	}	1021	}
690		1022
		1023	/* wether this cctx should be destructed */
		1024	#define CCTX_EXPIRED(cctx) ((cctx)->ssize < coro_stacksize \|\| ((cctx)->flags & CC_NOREUSE))
		1025
691	static coro_cctx *	1026	static coro_cctx *
692	cctx_get ()	1027	cctx_get (pTHX)
693	{	1028	{
694	coro_cctx *cctx;	1029	while (expect_true (cctx_first))
695
696	if (cctx_first)
697	{	1030	{
698	cctx = cctx_first;	1031	coro_cctx *cctx = cctx_first;
699	cctx_first = cctx->next;	1032	cctx_first = cctx->next;
700	--cctx_idle;	1033	--cctx_idle;
701	}	1034
702	else	1035	if (expect_true (!CCTX_EXPIRED (cctx)))
703	{	1036	return cctx;
704	cctx = cctx_new ();	1037
705	PL_op = PL_op->op_next;	1038	cctx_destroy (cctx);
706	}	1039	}
707		1040
708	return cctx;	1041	return cctx_new ();
709	}	1042	}
710		1043
711	static void	1044	static void
712	cctx_put (coro_cctx *cctx)	1045	cctx_put (coro_cctx *cctx)
713	{	1046	{
714	/* free another cctx if overlimit */	1047	/* free another cctx if overlimit */
715	if (cctx_idle >= MAX_IDLE_CCTX)	1048	if (expect_false (cctx_idle >= MAX_IDLE_CCTX))
716	{	1049	{
717	coro_cctx *first = cctx_first;	1050	coro_cctx *first = cctx_first;
718	cctx_first = first->next;	1051	cctx_first = first->next;
719	--cctx_idle;	1052	--cctx_idle;
720		1053
721	assert (!first->inuse);
722	cctx_destroy (first);	1054	cctx_destroy (first);
723	}	1055	}
724		1056
725	++cctx_idle;	1057	++cctx_idle;
726	cctx->next = cctx_first;	1058	cctx->next = cctx_first;
727	cctx_first = cctx;	1059	cctx_first = cctx;
728	}	1060	}
729		1061
730	/ coroutine switching ***************************************************/	1062	/ coroutine switching ***************************************************/
731		1063
732	/* never call directly, always through the coro_state_transfer global variable */	1064	static void
		1065	transfer_check (pTHX_ struct coro prev, struct coro next)
		1066	{
		1067	if (expect_true (prev != next))
		1068	{
		1069	if (expect_false (!(prev->flags & (CF_RUNNING \| CF_NEW))))
		1070	croak ("Coro::State::transfer called with non-running/new prev Coro::State, but can only transfer from running or new states");
		1071
		1072	if (expect_false (next->flags & CF_RUNNING))
		1073	croak ("Coro::State::transfer called with running next Coro::State, but can only transfer to inactive states");
		1074
		1075	if (expect_false (next->flags & CF_DESTROYED))
		1076	croak ("Coro::State::transfer called with destroyed next Coro::State, but can only transfer to inactive states");
		1077
		1078	if (
		1079	#if PERL_VERSION_ATLEAST (5,9,0)
		1080	expect_false (PL_parser)
		1081	#else
		1082	expect_false (PL_lex_state != LEX_NOTPARSING)
		1083	#endif
		1084	)
		1085	croak ("Coro::State::transfer called while parsing, but this is not supported");
		1086	}
		1087	}
		1088
		1089	/* always use the TRANSFER macro */
733	static void NOINLINE	1090	static void NOINLINE
734	transfer (struct coro prev, struct coro next)	1091	transfer (pTHX_ struct coro prev, struct coro next)
735	{	1092	{
736	dSTACKLEVEL;	1093	dSTACKLEVEL;
737		1094
738	/* sometimes transfer is only called to set idle_sp */	1095	/* sometimes transfer is only called to set idle_sp */
739	if (!next)	1096	if (expect_false (!next))
740	{	1097	{
741	((coro_cctx *)prev)->idle_sp = STACKLEVEL;	1098	((coro_cctx *)prev)->idle_sp = STACKLEVEL;
742	assert (((coro_cctx )prev)->idle_te = PL_top_env); / just for the side-effect when asserts are enabled */	1099	assert (((coro_cctx )prev)->idle_te = PL_top_env); / just for the side-effect when asserts are enabled */
743	}	1100	}
744	else if (prev != next)	1101	else if (expect_true (prev != next))
745	{	1102	{
746	coro_cctx *prev__cctx;	1103	coro_cctx *prev__cctx;
747		1104
748	if (prev->flags & CF_NEW)	1105	if (expect_false (prev->flags & CF_NEW))
749	{	1106	{
750	/* create a new empty context */	1107	/* create a new empty context */
751	Newz (0, prev->cctx, 1, coro_cctx);	1108	Newz (0, prev->cctx, 1, coro_cctx);
752	prev->cctx->inuse = 1;
753	prev->flags &= ~CF_NEW;	1109	prev->flags &= ~CF_NEW;
754	prev->flags \|= CF_RUNNING;	1110	prev->flags \|= CF_RUNNING;
755	}	1111	}
756		1112
757	/TODO: must not croak here /
758	if (!prev->flags & CF_RUNNING)
759	croak ("Coro::State::transfer called with non-running prev Coro::State, but can only transfer from running states");
760
761	if (next->flags & CF_RUNNING)
762	croak ("Coro::State::transfer called with running next Coro::State, but can only transfer to inactive states");
763
764	if (next->flags & CF_DESTROYED)
765	croak ("Coro::State::transfer called with destroyed next Coro::State, but can only transfer to inactive states");
766
767	prev->flags &= ~CF_RUNNING;	1113	prev->flags &= ~CF_RUNNING;
768	next->flags \|= CF_RUNNING;	1114	next->flags \|= CF_RUNNING;
769		1115
770	LOCK;	1116	LOCK;
771		1117
772	if (next->flags & CF_NEW)	1118	if (expect_false (next->flags & CF_NEW))
773	{	1119	{
774	/* need to start coroutine */	1120	/* need to start coroutine */
775	next->flags &= ~CF_NEW;	1121	next->flags &= ~CF_NEW;
776	/* first get rid of the old state */	1122	/* first get rid of the old state */
777	save_perl (prev);	1123	save_perl (aTHX_ prev);
778	/* setup coroutine call */	1124	/* setup coroutine call */
779	setup_coro (next);	1125	coro_setup (aTHX_ next);
780	/* need a new stack */
781	assert (!next->cctx);
782	}	1126	}
783	else	1127	else
784	{	1128	{
785	/* coroutine already started */	1129	/* coroutine already started */
786	save_perl (prev);	1130	save_perl (aTHX_ prev);
787	load_perl (next);	1131	load_perl (aTHX_ next);
788	}	1132	}
789		1133
790	prev__cctx = prev->cctx;	1134	prev__cctx = prev->cctx;
791		1135
792	/* possibly "free" the cctx */	1136	/* possibly "free" the cctx */
793	if (prev__cctx->idle_sp == STACKLEVEL)	1137	if (expect_true (prev__cctx->idle_sp == STACKLEVEL && !(prev__cctx->flags & CC_TRACE)))
794	{	1138	{
795	/* I assume that STACKLEVEL is a stronger indicator than PL_top_env changes */	1139	/* I assume that STACKLEVEL is a stronger indicator than PL_top_env changes */
796	assert (("ERROR: current top_env must equal previous top_env", PL_top_env == prev__cctx->idle_te));	1140	assert (("ERROR: current top_env must equal previous top_env", PL_top_env == prev__cctx->idle_te));
797		1141
798	prev->cctx = 0;	1142	prev->cctx = 0;
799		1143
		1144	/* if the cctx is about to be destroyed we need to make sure we won't see it in cctx_get */
		1145	/* without this the next cctx_get might destroy the prev__cctx while still in use */
		1146	if (expect_false (CCTX_EXPIRED (prev__cctx)))
		1147	if (!next->cctx)
		1148	next->cctx = cctx_get (aTHX);
		1149
800	cctx_put (prev__cctx);	1150	cctx_put (prev__cctx);
801	prev__cctx->inuse = 0;
802	}	1151	}
803		1152
		1153	++next->usecount;
		1154
804	if (!next->cctx)	1155	if (expect_true (!next->cctx))
805	{
806	next->cctx = cctx_get ();	1156	next->cctx = cctx_get (aTHX);
807	assert (!next->cctx->inuse);
808	next->cctx->inuse = 1;
809	}
810		1157
811	if (prev__cctx != next->cctx)	1158	if (expect_false (prev__cctx != next->cctx))
812	{	1159	{
813	prev__cctx->top_env = PL_top_env;	1160	prev__cctx->top_env = PL_top_env;
814	PL_top_env = next->cctx->top_env;	1161	PL_top_env = next->cctx->top_env;
815	coro_transfer (&prev__cctx->cctx, &next->cctx->cctx);	1162	coro_transfer (&prev__cctx->cctx, &next->cctx->cctx);
816	}	1163	}
817		1164
818	free_coro_mortal ();	1165	free_coro_mortal (aTHX);
819	UNLOCK;	1166	UNLOCK;
		1167
		1168	if (expect_false (prev->throw \|\| next->throw))
		1169	{
		1170	struct coro *coro = SvSTATE (coro_current);
		1171
		1172	if (coro->throw)
		1173	{
		1174	SV *exception = coro->throw;
		1175	coro->throw = 0;
		1176	sv_setsv (ERRSV, exception);
		1177	croak (0);
		1178	}
		1179	}
820	}	1180	}
821	}	1181	}
822		1182
823	struct transfer_args	1183	struct transfer_args
824	{	1184	{
825	struct coro prev, next;	1185	struct coro prev, next;
826	};	1186	};
827		1187
828	#define TRANSFER(ta) transfer ((ta).prev, (ta).next)	1188	#define TRANSFER(ta) transfer (aTHX_ (ta).prev, (ta).next)
		1189	#define TRANSFER_CHECK(ta) transfer_check (aTHX_ (ta).prev, (ta).next)
829		1190
830	/ high level stuff ******************************************************/	1191	/ high level stuff ******************************************************/
831		1192
832	static int	1193	static int
833	coro_state_destroy (struct coro *coro)	1194	coro_state_destroy (pTHX_ struct coro *coro)
834	{	1195	{
835	if (coro->flags & CF_DESTROYED)	1196	if (coro->flags & CF_DESTROYED)
836	return 0;	1197	return 0;
837		1198
838	coro->flags \|= CF_DESTROYED;	1199	coro->flags \|= CF_DESTROYED;
839		1200
840	if (coro->flags & CF_READY)	1201	if (coro->flags & CF_READY)
841	{	1202	{
842	/* reduce nready, as destroying a ready coro effectively unreadies it */	1203	/* reduce nready, as destroying a ready coro effectively unreadies it */
843	/* alternative: look through all ready queues and remove it */	1204	/* alternative: look through all ready queues and remove the coro */
844	LOCK;	1205	LOCK;
845	--coro_nready;	1206	--coro_nready;
846	UNLOCK;	1207	UNLOCK;
847	}	1208	}
848	else	1209	else
849	coro->flags \|= CF_READY; /* make sure it is NOT put into the readyqueue */	1210	coro->flags \|= CF_READY; /* make sure it is NOT put into the readyqueue */
850		1211
851	if (coro->mainstack && coro->mainstack != main_mainstack)	1212	if (coro->mainstack && coro->mainstack != main_mainstack)
852	{	1213	{
853	assert (!(coro->flags & CF_RUNNING));
854
855	struct coro temp;	1214	struct coro temp;
856	Zero (&temp, 1, struct coro);
857	temp.save = CORO_SAVE_ALL;
858		1215
859	if (coro->flags & CF_RUNNING)	1216	if (coro->flags & CF_RUNNING)
860	croak ("FATAL: tried to destroy currently running coroutine");	1217	croak ("FATAL: tried to destroy currently running coroutine");
861		1218
862	save_perl (&temp);	1219	save_perl (aTHX_ &temp);
863	load_perl (coro);	1220	load_perl (aTHX_ coro);
864		1221
865	coro_destroy_stacks ();	1222	coro_destroy (aTHX_ coro);
866		1223
867	load_perl (&temp); /* this will get rid of defsv etc.. */	1224	load_perl (aTHX_ &temp);
868		1225
869	coro->mainstack = 0;	1226	coro->slot = 0;
870	}	1227	}
871		1228
872	cctx_destroy (coro->cctx);	1229	cctx_destroy (coro->cctx);
873	SvREFCNT_dec (coro->args);	1230	SvREFCNT_dec (coro->args);
874		1231
		1232	if (coro->next) coro->next->prev = coro->prev;
		1233	if (coro->prev) coro->prev->next = coro->next;
		1234	if (coro == coro_first) coro_first = coro->next;
		1235
875	return 1;	1236	return 1;
876	}	1237	}
877		1238
878	static int	1239	static int
879	coro_state_free (pTHX_ SV sv, MAGIC mg)	1240	coro_state_free (pTHX_ SV sv, MAGIC mg)
880	{	1241	{
881	struct coro coro = (struct coro )mg->mg_ptr;	1242	struct coro coro = (struct coro )mg->mg_ptr;
882	mg->mg_ptr = 0;	1243	mg->mg_ptr = 0;
883		1244
		1245	coro->hv = 0;
		1246
884	if (--coro->refcnt < 0)	1247	if (--coro->refcnt < 0)
885	{	1248	{
886	coro_state_destroy (coro);	1249	coro_state_destroy (aTHX_ coro);
887	Safefree (coro);	1250	Safefree (coro);
888	}	1251	}
889		1252
890	return 0;	1253	return 0;
891	}	1254	}
…		…
909	#else	1272	#else
910	# define MGf_DUP 0	1273	# define MGf_DUP 0
911	#endif	1274	#endif
912	};	1275	};
913		1276
914	static struct coro *
915	SvSTATE (SV *coro)
916	{
917	HV *stash;
918	MAGIC *mg;
919
920	if (SvROK (coro))
921	coro = SvRV (coro);
922
923	stash = SvSTASH (coro);
924	if (stash != coro_stash && stash != coro_state_stash)
925	{
926	/* very slow, but rare, check */
927	if (!sv_derived_from (sv_2mortal (newRV_inc (coro)), "Coro::State"))
928	croak ("Coro::State object required");
929	}
930
931	mg = SvMAGIC (coro);
932	assert (mg->mg_type == PERL_MAGIC_ext);
933	return (struct coro *)mg->mg_ptr;
934	}
935
936	static void	1277	static void
937	prepare_transfer (struct transfer_args ta, SV prev_sv, SV *next_sv)	1278	prepare_transfer (pTHX_ struct transfer_args ta, SV prev_sv, SV *next_sv)
938	{	1279	{
939	ta->prev = SvSTATE (prev_sv);	1280	ta->prev = SvSTATE (prev_sv);
940	ta->next = SvSTATE (next_sv);	1281	ta->next = SvSTATE (next_sv);
		1282	TRANSFER_CHECK (*ta);
941	}	1283	}
942		1284
943	static void	1285	static void
944	api_transfer (SV prev_sv, SV next_sv)	1286	api_transfer (SV prev_sv, SV next_sv)
945	{	1287	{
		1288	dTHX;
946	struct transfer_args ta;	1289	struct transfer_args ta;
947		1290
948	prepare_transfer (&ta, prev_sv, next_sv);	1291	prepare_transfer (aTHX_ &ta, prev_sv, next_sv);
949	TRANSFER (ta);	1292	TRANSFER (ta);
950	}	1293	}
951		1294
952	static int
953	api_save (SV *coro_sv, int new_save)
954	{
955	struct coro *coro = SvSTATE (coro_sv);
956	int old_save = coro->save;
957
958	if (new_save >= 0)
959	coro->save = new_save;
960
961	return old_save;
962	}
963
964	/ Coro ******************************************************************/	1295	/ Coro ******************************************************************/
965		1296
966	static void	1297	static void
967	coro_enq (SV *coro_sv)	1298	coro_enq (pTHX_ SV *coro_sv)
968	{	1299	{
969	av_push (coro_ready [SvSTATE (coro_sv)->prio - PRIO_MIN], coro_sv);	1300	av_push (coro_ready [SvSTATE (coro_sv)->prio - PRIO_MIN], coro_sv);
970	}	1301	}
971		1302
972	static SV *	1303	static SV *
973	coro_deq (int min_prio)	1304	coro_deq (pTHX_ int min_prio)
974	{	1305	{
975	int prio = PRIO_MAX - PRIO_MIN;	1306	int prio = PRIO_MAX - PRIO_MIN;
976		1307
977	min_prio -= PRIO_MIN;	1308	min_prio -= PRIO_MIN;
978	if (min_prio < 0)	1309	if (min_prio < 0)
…		…
986	}	1317	}
987		1318
988	static int	1319	static int
989	api_ready (SV *coro_sv)	1320	api_ready (SV *coro_sv)
990	{	1321	{
		1322	dTHX;
991	struct coro *coro;	1323	struct coro *coro;
992		1324
993	if (SvROK (coro_sv))	1325	if (SvROK (coro_sv))
994	coro_sv = SvRV (coro_sv);	1326	coro_sv = SvRV (coro_sv);
995		1327
…		…
999	return 0;	1331	return 0;
1000		1332
1001	coro->flags \|= CF_READY;	1333	coro->flags \|= CF_READY;
1002		1334
1003	LOCK;	1335	LOCK;
1004	coro_enq (SvREFCNT_inc (coro_sv));	1336	coro_enq (aTHX_ SvREFCNT_inc (coro_sv));
1005	++coro_nready;	1337	++coro_nready;
1006	UNLOCK;	1338	UNLOCK;
1007		1339
1008	return 1;	1340	return 1;
1009	}	1341	}
1010		1342
1011	static int	1343	static int
1012	api_is_ready (SV *coro_sv)	1344	api_is_ready (SV *coro_sv)
1013	{	1345	{
		1346	dTHX;
1014	return !!(SvSTATE (coro_sv)->flags & CF_READY);	1347	return !!(SvSTATE (coro_sv)->flags & CF_READY);
1015	}	1348	}
1016		1349
1017	static void	1350	static void
1018	prepare_schedule (struct transfer_args *ta)	1351	prepare_schedule (pTHX_ struct transfer_args *ta)
1019	{	1352	{
1020	SV prev_sv, next_sv;	1353	SV prev_sv, next_sv;
1021		1354
1022	for (;;)	1355	for (;;)
1023	{	1356	{
1024	LOCK;	1357	LOCK;
1025	next_sv = coro_deq (PRIO_MIN);	1358	next_sv = coro_deq (aTHX_ PRIO_MIN);
1026	UNLOCK;
1027		1359
1028	/* nothing to schedule: call the idle handler */	1360	/* nothing to schedule: call the idle handler */
1029	if (!next_sv)	1361	if (expect_false (!next_sv))
1030	{	1362	{
1031	dSP;	1363	dSP;
		1364	UNLOCK;
1032		1365
1033	ENTER;	1366	ENTER;
1034	SAVETMPS;	1367	SAVETMPS;
1035		1368
1036	PUSHMARK (SP);	1369	PUSHMARK (SP);
…		…
1043	}	1376	}
1044		1377
1045	ta->next = SvSTATE (next_sv);	1378	ta->next = SvSTATE (next_sv);
1046		1379
1047	/* cannot transfer to destroyed coros, skip and look for next */	1380	/* cannot transfer to destroyed coros, skip and look for next */
1048	if (ta->next->flags & CF_DESTROYED)	1381	if (expect_false (ta->next->flags & CF_DESTROYED))
1049	{	1382	{
		1383	UNLOCK;
1050	SvREFCNT_dec (next_sv);	1384	SvREFCNT_dec (next_sv);
1051	/* coro_nready is already taken care of by destroy */	1385	/* coro_nready is already taken care of by destroy */
1052	continue;	1386	continue;
1053	}	1387	}
1054		1388
1055	LOCK;
1056	--coro_nready;	1389	--coro_nready;
1057	UNLOCK;	1390	UNLOCK;
1058	break;	1391	break;
1059	}	1392	}
1060		1393
1061	/* free this only after the transfer */	1394	/* free this only after the transfer */
1062	prev_sv = SvRV (coro_current);	1395	prev_sv = SvRV (coro_current);
1063	SvRV_set (coro_current, next_sv);
1064	ta->prev = SvSTATE (prev_sv);	1396	ta->prev = SvSTATE (prev_sv);
1065		1397	TRANSFER_CHECK (*ta);
1066	assert (ta->next->flags & CF_READY);	1398	assert (ta->next->flags & CF_READY);
1067	ta->next->flags &= ~CF_READY;	1399	ta->next->flags &= ~CF_READY;
		1400	SvRV_set (coro_current, next_sv);
1068		1401
1069	LOCK;	1402	LOCK;
1070	free_coro_mortal ();	1403	free_coro_mortal (aTHX);
1071	coro_mortal = prev_sv;	1404	coro_mortal = prev_sv;
1072	UNLOCK;	1405	UNLOCK;
1073	}	1406	}
1074		1407
1075	static void	1408	static void
1076	prepare_cede (struct transfer_args *ta)	1409	prepare_cede (pTHX_ struct transfer_args *ta)
1077	{	1410	{
1078	api_ready (coro_current);	1411	api_ready (coro_current);
1079	prepare_schedule (ta);	1412	prepare_schedule (aTHX_ ta);
1080	}	1413	}
1081		1414
1082	static int	1415	static int
1083	prepare_cede_notself (struct transfer_args *ta)	1416	prepare_cede_notself (pTHX_ struct transfer_args *ta)
1084	{	1417	{
1085	if (coro_nready)	1418	if (coro_nready)
1086	{	1419	{
1087	SV *prev = SvRV (coro_current);	1420	SV *prev = SvRV (coro_current);
1088	prepare_schedule (ta);	1421	prepare_schedule (aTHX_ ta);
1089	api_ready (prev);	1422	api_ready (prev);
1090	return 1;	1423	return 1;
1091	}	1424	}
1092	else	1425	else
1093	return 0;	1426	return 0;
1094	}	1427	}
1095		1428
1096	static void	1429	static void
1097	api_schedule (void)	1430	api_schedule (void)
1098	{	1431	{
		1432	dTHX;
1099	struct transfer_args ta;	1433	struct transfer_args ta;
1100		1434
1101	prepare_schedule (&ta);	1435	prepare_schedule (aTHX_ &ta);
1102	TRANSFER (ta);	1436	TRANSFER (ta);
1103	}	1437	}
1104		1438
1105	static int	1439	static int
1106	api_cede (void)	1440	api_cede (void)
1107	{	1441	{
		1442	dTHX;
1108	struct transfer_args ta;	1443	struct transfer_args ta;
1109		1444
1110	prepare_cede (&ta);	1445	prepare_cede (aTHX_ &ta);
1111		1446
1112	if (ta.prev != ta.next)	1447	if (expect_true (ta.prev != ta.next))
1113	{	1448	{
1114	TRANSFER (ta);	1449	TRANSFER (ta);
1115	return 1;	1450	return 1;
1116	}	1451	}
1117	else	1452	else
…		…
1119	}	1454	}
1120		1455
1121	static int	1456	static int
1122	api_cede_notself (void)	1457	api_cede_notself (void)
1123	{	1458	{
		1459	dTHX;
1124	struct transfer_args ta;	1460	struct transfer_args ta;
1125		1461
1126	if (prepare_cede_notself (&ta))	1462	if (prepare_cede_notself (aTHX_ &ta))
1127	{	1463	{
1128	TRANSFER (ta);	1464	TRANSFER (ta);
1129	return 1;	1465	return 1;
1130	}	1466	}
1131	else	1467	else
1132	return 0;	1468	return 0;
1133	}	1469	}
1134		1470
		1471	static void
		1472	api_trace (SV *coro_sv, int flags)
		1473	{
		1474	dTHX;
		1475	struct coro *coro = SvSTATE (coro_sv);
		1476
		1477	if (flags & CC_TRACE)
		1478	{
		1479	if (!coro->cctx)
		1480	coro->cctx = cctx_new ();
		1481	else if (!(coro->cctx->flags & CC_TRACE))
		1482	croak ("cannot enable tracing on coroutine with custom stack");
		1483
		1484	coro->cctx->flags \|= CC_NOREUSE \| (flags & (CC_TRACE \| CC_TRACE_ALL));
		1485	}
		1486	else if (coro->cctx && coro->cctx->flags & CC_TRACE)
		1487	{
		1488	coro->cctx->flags &= ~(CC_TRACE \| CC_TRACE_ALL);
		1489
		1490	if (coro->flags & CF_RUNNING)
		1491	PL_runops = RUNOPS_DEFAULT;
		1492	else
		1493	coro->slot->runops = RUNOPS_DEFAULT;
		1494	}
		1495	}
		1496
1135	MODULE = Coro::State PACKAGE = Coro::State	1497	MODULE = Coro::State PACKAGE = Coro::State PREFIX = api_
1136		1498
1137	PROTOTYPES: DISABLE	1499	PROTOTYPES: DISABLE
1138		1500
1139	BOOT:	1501	BOOT:
1140	{	1502	{
1141	#ifdef USE_ITHREADS	1503	#ifdef USE_ITHREADS
1142	MUTEX_INIT (&coro_mutex);	1504	MUTEX_INIT (&coro_mutex);
1143	#endif	1505	#endif
1144	BOOT_PAGESIZE;	1506	BOOT_PAGESIZE;
1145		1507
		1508	irsgv = gv_fetchpv ("/" , GV_ADD\|GV_NOTQUAL, SVt_PV);
		1509	stdoutgv = gv_fetchpv ("STDOUT", GV_ADD\|GV_NOTQUAL, SVt_PVIO);
		1510
		1511	hv_sig = coro_get_hv (aTHX_ "SIG", TRUE);
		1512	sv_diehook = coro_get_sv (aTHX_ "Coro::State::DIEHOOK" , TRUE);
		1513	sv_warnhook = coro_get_sv (aTHX_ "Coro::State::WARNHOOK", TRUE);
		1514
		1515	if (!PL_diehook ) hv_store (hv_sig, "__DIE__" , sizeof ("__DIE__" ) - 1, SvREFCNT_inc (sv_diehook ), 0);
		1516	if (!PL_warnhook) hv_store (hv_sig, "__WARN__", sizeof ("__WARN__") - 1, SvREFCNT_inc (sv_warnhook), 0);
		1517
1146	coro_state_stash = gv_stashpv ("Coro::State", TRUE);	1518	coro_state_stash = gv_stashpv ("Coro::State", TRUE);
1147		1519
		1520	newCONSTSUB (coro_state_stash, "CC_TRACE" , newSViv (CC_TRACE));
		1521	newCONSTSUB (coro_state_stash, "CC_TRACE_SUB" , newSViv (CC_TRACE_SUB));
1148	newCONSTSUB (coro_state_stash, "SAVE_DEFAV", newSViv (CORO_SAVE_DEFAV));	1522	newCONSTSUB (coro_state_stash, "CC_TRACE_LINE", newSViv (CC_TRACE_LINE));
1149	newCONSTSUB (coro_state_stash, "SAVE_DEFSV", newSViv (CORO_SAVE_DEFSV));
1150	newCONSTSUB (coro_state_stash, "SAVE_ERRSV", newSViv (CORO_SAVE_ERRSV));
1151	newCONSTSUB (coro_state_stash, "SAVE_IRSSV", newSViv (CORO_SAVE_IRSSV));
1152	newCONSTSUB (coro_state_stash, "SAVE_ALL", newSViv (CORO_SAVE_ALL));	1523	newCONSTSUB (coro_state_stash, "CC_TRACE_ALL" , newSViv (CC_TRACE_ALL));
1153		1524
1154	main_mainstack = PL_mainstack;	1525	main_mainstack = PL_mainstack;
		1526	main_top_env = PL_top_env;
		1527
		1528	while (main_top_env->je_prev)
		1529	main_top_env = main_top_env->je_prev;
1155		1530
1156	coroapi.ver = CORO_API_VERSION;	1531	coroapi.ver = CORO_API_VERSION;
		1532	coroapi.rev = CORO_API_REVISION;
1157	coroapi.transfer = api_transfer;	1533	coroapi.transfer = api_transfer;
1158		1534
1159	assert (("PRIO_NORMAL must be 0", !PRIO_NORMAL));	1535	assert (("PRIO_NORMAL must be 0", !PRIO_NORMAL));
1160	}	1536	}
1161		1537
…		…
1166	struct coro *coro;	1542	struct coro *coro;
1167	HV *hv;	1543	HV *hv;
1168	int i;	1544	int i;
1169		1545
1170	Newz (0, coro, 1, struct coro);	1546	Newz (0, coro, 1, struct coro);
1171	coro->args = newAV ();	1547	coro->args = newAV ();
1172	coro->save = CORO_SAVE_ALL;
1173	coro->flags = CF_NEW;	1548	coro->flags = CF_NEW;
1174		1549
		1550	if (coro_first) coro_first->prev = coro;
		1551	coro->next = coro_first;
		1552	coro_first = coro;
		1553
1175	hv = newHV ();	1554	coro->hv = hv = newHV ();
1176	sv_magicext ((SV )hv, 0, PERL_MAGIC_ext, &coro_state_vtbl, (char )coro, 0)->mg_flags \|= MGf_DUP;	1555	sv_magicext ((SV )hv, 0, PERL_MAGIC_ext, &coro_state_vtbl, (char )coro, 0)->mg_flags \|= MGf_DUP;
1177	RETVAL = sv_bless (newRV_noinc ((SV *)hv), gv_stashpv (klass, 1));	1556	RETVAL = sv_bless (newRV_noinc ((SV *)hv), gv_stashpv (klass, 1));
1178		1557
		1558	av_extend (coro->args, items - 1);
1179	for (i = 1; i < items; i++)	1559	for (i = 1; i < items; i++)
1180	av_push (coro->args, newSVsv (ST (i)));	1560	av_push (coro->args, newSVsv (ST (i)));
1181	}	1561	}
1182	OUTPUT:	1562	OUTPUT:
1183	RETVAL	1563	RETVAL
1184		1564
1185	int	1565	# these not obviously related functions are all rolled into the same xs
1186	save (SV *coro, int new_save = -1)	1566	# function to increase chances that they all will call transfer with the same
1187	CODE:	1567	# stack offset
1188	RETVAL = api_save (coro, new_save);
1189	OUTPUT:
1190	RETVAL
1191
1192	void	1568	void
1193	_set_stacklevel (...)	1569	_set_stacklevel (...)
1194	ALIAS:	1570	ALIAS:
1195	Coro::State::transfer = 1	1571	Coro::State::transfer = 1
1196	Coro::schedule = 2	1572	Coro::schedule = 2
…		…
1209		1585
1210	case 1:	1586	case 1:
1211	if (items != 2)	1587	if (items != 2)
1212	croak ("Coro::State::transfer (prev,next) expects two arguments, not %d", items);	1588	croak ("Coro::State::transfer (prev,next) expects two arguments, not %d", items);
1213		1589
1214	prepare_transfer (&ta, ST (0), ST (1));	1590	prepare_transfer (aTHX_ &ta, ST (0), ST (1));
1215	break;	1591	break;
1216		1592
1217	case 2:	1593	case 2:
1218	prepare_schedule (&ta);	1594	prepare_schedule (aTHX_ &ta);
1219	break;	1595	break;
1220		1596
1221	case 3:	1597	case 3:
1222	prepare_cede (&ta);	1598	prepare_cede (aTHX_ &ta);
1223	break;	1599	break;
1224		1600
1225	case 4:	1601	case 4:
1226	if (!prepare_cede_notself (&ta))	1602	if (!prepare_cede_notself (aTHX_ &ta))
1227	XSRETURN_EMPTY;	1603	XSRETURN_EMPTY;
1228		1604
1229	break;	1605	break;
1230	}	1606	}
1231		1607
1232	BARRIER;	1608	BARRIER;
		1609	PUTBACK;
1233	TRANSFER (ta);	1610	TRANSFER (ta);
1234		1611	SPAGAIN; /* might be the sp of a different coroutine now */
1235	if (GIMME_V != G_VOID && ta.next != ta.prev)	1612	/* be extra careful not to ever do anything after TRANSFER */
1236	XSRETURN_YES;
1237	}	1613	}
1238		1614
1239	bool	1615	bool
1240	_destroy (SV *coro_sv)	1616	_destroy (SV *coro_sv)
1241	CODE:	1617	CODE:
1242	RETVAL = coro_state_destroy (SvSTATE (coro_sv));	1618	RETVAL = coro_state_destroy (aTHX_ SvSTATE (coro_sv));
1243	OUTPUT:	1619	OUTPUT:
1244	RETVAL	1620	RETVAL
1245		1621
1246	void	1622	void
1247	_exit (code)	1623	_exit (code)
…		…
1249	PROTOTYPE: $	1625	PROTOTYPE: $
1250	CODE:	1626	CODE:
1251	_exit (code);	1627	_exit (code);
1252		1628
1253	int	1629	int
		1630	cctx_stacksize (int new_stacksize = 0)
		1631	CODE:
		1632	RETVAL = coro_stacksize;
		1633	if (new_stacksize)
		1634	coro_stacksize = new_stacksize;
		1635	OUTPUT:
		1636	RETVAL
		1637
		1638	int
1254	cctx_count ()	1639	cctx_count ()
1255	CODE:	1640	CODE:
1256	RETVAL = cctx_count;	1641	RETVAL = cctx_count;
1257	OUTPUT:	1642	OUTPUT:
1258	RETVAL	1643	RETVAL
…		…
1262	CODE:	1647	CODE:
1263	RETVAL = cctx_idle;	1648	RETVAL = cctx_idle;
1264	OUTPUT:	1649	OUTPUT:
1265	RETVAL	1650	RETVAL
1266		1651
		1652	void
		1653	list ()
		1654	PPCODE:
		1655	{
		1656	struct coro *coro;
		1657	for (coro = coro_first; coro; coro = coro->next)
		1658	if (coro->hv)
		1659	XPUSHs (sv_2mortal (newRV_inc ((SV *)coro->hv)));
		1660	}
		1661
		1662	void
		1663	call (Coro::State coro, SV *coderef)
		1664	ALIAS:
		1665	eval = 1
		1666	CODE:
		1667	{
		1668	if (coro->mainstack)
		1669	{
		1670	struct coro temp;
		1671
		1672	if (!(coro->flags & CF_RUNNING))
		1673	{
		1674	save_perl (aTHX_ &temp);
		1675	load_perl (aTHX_ coro);
		1676	}
		1677
		1678	{
		1679	dSP;
		1680	ENTER;
		1681	SAVETMPS;
		1682	PUTBACK;
		1683	PUSHSTACK;
		1684	PUSHMARK (SP);
		1685
		1686	if (ix)
		1687	eval_sv (coderef, 0);
		1688	else
		1689	call_sv (coderef, G_KEEPERR \| G_EVAL \| G_VOID \| G_DISCARD);
		1690
		1691	POPSTACK;
		1692	SPAGAIN;
		1693	FREETMPS;
		1694	LEAVE;
		1695	PUTBACK;
		1696	}
		1697
		1698	if (!(coro->flags & CF_RUNNING))
		1699	{
		1700	save_perl (aTHX_ coro);
		1701	load_perl (aTHX_ &temp);
		1702	}
		1703	}
		1704	}
		1705
		1706	SV *
		1707	is_ready (Coro::State coro)
		1708	PROTOTYPE: $
		1709	ALIAS:
		1710	is_ready = CF_READY
		1711	is_running = CF_RUNNING
		1712	is_new = CF_NEW
		1713	is_destroyed = CF_DESTROYED
		1714	CODE:
		1715	RETVAL = boolSV (coro->flags & ix);
		1716	OUTPUT:
		1717	RETVAL
		1718
		1719	void
		1720	api_trace (SV *coro, int flags = CC_TRACE \| CC_TRACE_SUB)
		1721
		1722	SV *
		1723	has_stack (Coro::State coro)
		1724	PROTOTYPE: $
		1725	CODE:
		1726	RETVAL = boolSV (!!coro->cctx);
		1727	OUTPUT:
		1728	RETVAL
		1729
		1730	int
		1731	is_traced (Coro::State coro)
		1732	PROTOTYPE: $
		1733	CODE:
		1734	RETVAL = (coro->cctx ? coro->cctx->flags : 0) & CC_TRACE_ALL;
		1735	OUTPUT:
		1736	RETVAL
		1737
		1738	IV
		1739	rss (Coro::State coro)
		1740	PROTOTYPE: $
		1741	ALIAS:
		1742	usecount = 1
		1743	CODE:
		1744	switch (ix)
		1745	{
		1746	case 0: RETVAL = coro_rss (aTHX_ coro); break;
		1747	case 1: RETVAL = coro->usecount; break;
		1748	}
		1749	OUTPUT:
		1750	RETVAL
		1751
		1752
1267	MODULE = Coro::State PACKAGE = Coro	1753	MODULE = Coro::State PACKAGE = Coro
1268		1754
1269	BOOT:	1755	BOOT:
1270	{	1756	{
1271	int i;	1757	int i;
1272		1758
		1759	sv_pool_rss = coro_get_sv (aTHX_ "Coro::POOL_RSS" , TRUE);
		1760	sv_pool_size = coro_get_sv (aTHX_ "Coro::POOL_SIZE" , TRUE);
		1761	av_async_pool = coro_get_av (aTHX_ "Coro::async_pool", TRUE);
		1762
		1763	coro_current = coro_get_sv (aTHX_ "Coro::current", FALSE);
		1764	SvREADONLY_on (coro_current);
		1765
1273	coro_stash = gv_stashpv ("Coro", TRUE);	1766	coro_stash = gv_stashpv ("Coro", TRUE);
1274		1767
1275	newCONSTSUB (coro_stash, "PRIO_MAX", newSViv (PRIO_MAX));	1768	newCONSTSUB (coro_stash, "PRIO_MAX", newSViv (PRIO_MAX));
1276	newCONSTSUB (coro_stash, "PRIO_HIGH", newSViv (PRIO_HIGH));	1769	newCONSTSUB (coro_stash, "PRIO_HIGH", newSViv (PRIO_HIGH));
1277	newCONSTSUB (coro_stash, "PRIO_NORMAL", newSViv (PRIO_NORMAL));	1770	newCONSTSUB (coro_stash, "PRIO_NORMAL", newSViv (PRIO_NORMAL));
1278	newCONSTSUB (coro_stash, "PRIO_LOW", newSViv (PRIO_LOW));	1771	newCONSTSUB (coro_stash, "PRIO_LOW", newSViv (PRIO_LOW));
1279	newCONSTSUB (coro_stash, "PRIO_IDLE", newSViv (PRIO_IDLE));	1772	newCONSTSUB (coro_stash, "PRIO_IDLE", newSViv (PRIO_IDLE));
1280	newCONSTSUB (coro_stash, "PRIO_MIN", newSViv (PRIO_MIN));	1773	newCONSTSUB (coro_stash, "PRIO_MIN", newSViv (PRIO_MIN));
1281		1774
1282	coro_current = get_sv ("Coro::current", FALSE);
1283	SvREADONLY_on (coro_current);
1284
1285	for (i = PRIO_MAX - PRIO_MIN + 1; i--; )	1775	for (i = PRIO_MAX - PRIO_MIN + 1; i--; )
1286	coro_ready[i] = newAV ();	1776	coro_ready[i] = newAV ();
1287		1777
1288	{	1778	{
1289	SV *sv = perl_get_sv("Coro::API", 1);	1779	SV *sv = perl_get_sv ("Coro::API", TRUE);
		1780	perl_get_sv ("Coro::API", TRUE); /* silence 5.10 warning */
1290		1781
1291	coroapi.schedule = api_schedule;	1782	coroapi.schedule = api_schedule;
1292	coroapi.save = api_save;
1293	coroapi.cede = api_cede;	1783	coroapi.cede = api_cede;
1294	coroapi.cede_notself = api_cede_notself;	1784	coroapi.cede_notself = api_cede_notself;
1295	coroapi.ready = api_ready;	1785	coroapi.ready = api_ready;
1296	coroapi.is_ready = api_is_ready;	1786	coroapi.is_ready = api_is_ready;
1297	coroapi.nready = &coro_nready;	1787	coroapi.nready = &coro_nready;
…		…
1338	CODE:	1828	CODE:
1339	RETVAL = boolSV (api_ready (self));	1829	RETVAL = boolSV (api_ready (self));
1340	OUTPUT:	1830	OUTPUT:
1341	RETVAL	1831	RETVAL
1342		1832
1343	SV *
1344	is_ready (SV *self)
1345	PROTOTYPE: $
1346	CODE:
1347	RETVAL = boolSV (api_is_ready (self));
1348	OUTPUT:
1349	RETVAL
1350
1351	int	1833	int
1352	nready (...)	1834	nready (...)
1353	PROTOTYPE:	1835	PROTOTYPE:
1354	CODE:	1836	CODE:
1355	RETVAL = coro_nready;	1837	RETVAL = coro_nready;
1356	OUTPUT:	1838	OUTPUT:
1357	RETVAL	1839	RETVAL
1358		1840
		1841	void
		1842	throw (Coro::State self, SV *throw = &PL_sv_undef)
		1843	PROTOTYPE: $;$
		1844	CODE:
		1845	SvREFCNT_dec (self->throw);
		1846	self->throw = SvOK (throw) ? newSVsv (throw) : 0;
		1847
		1848	# for async_pool speedup
		1849	void
		1850	_pool_1 (SV *cb)
		1851	CODE:
		1852	{
		1853	struct coro *coro = SvSTATE (coro_current);
		1854	HV hv = (HV )SvRV (coro_current);
		1855	AV *defav = GvAV (PL_defgv);
		1856	SV *invoke = hv_delete (hv, "_invoke", sizeof ("_invoke") - 1, 0);
		1857	AV *invoke_av;
		1858	int i, len;
		1859
		1860	if (!invoke)
		1861	croak ("\3async_pool terminate\2\n");
		1862
		1863	SvREFCNT_dec (coro->saved_deffh);
		1864	coro->saved_deffh = SvREFCNT_inc ((SV *)PL_defoutgv);
		1865
		1866	hv_store (hv, "desc", sizeof ("desc") - 1,
		1867	newSVpvn ("[async_pool]", sizeof ("[async_pool]") - 1), 0);
		1868
		1869	invoke_av = (AV *)SvRV (invoke);
		1870	len = av_len (invoke_av);
		1871
		1872	sv_setsv (cb, AvARRAY (invoke_av)[0]);
		1873
		1874	if (len > 0)
		1875	{
		1876	av_fill (defav, len - 1);
		1877	for (i = 0; i < len; ++i)
		1878	av_store (defav, i, SvREFCNT_inc (AvARRAY (invoke_av)[i + 1]));
		1879	}
		1880
		1881	SvREFCNT_dec (invoke);
		1882	}
		1883
		1884	void
		1885	_pool_2 (SV *cb)
		1886	CODE:
		1887	{
		1888	struct coro *coro = SvSTATE (coro_current);
		1889
		1890	sv_setsv (cb, &PL_sv_undef);
		1891
		1892	SvREFCNT_dec ((SV )PL_defoutgv); PL_defoutgv = (GV )coro->saved_deffh;
		1893	coro->saved_deffh = 0;
		1894
		1895	if (coro_rss (aTHX_ coro) > SvIV (sv_pool_rss)
		1896	\|\| av_len (av_async_pool) + 1 >= SvIV (sv_pool_size))
		1897	croak ("\3async_pool terminate\2\n");
		1898
		1899	av_clear (GvAV (PL_defgv));
		1900	hv_store ((HV *)SvRV (coro_current), "desc", sizeof ("desc") - 1,
		1901	newSVpvn ("[async_pool idle]", sizeof ("[async_pool idle]") - 1), 0);
		1902
		1903	coro->prio = 0;
		1904
		1905	if (coro->cctx && (coro->cctx->flags & CC_TRACE))
		1906	api_trace (coro_current, 0);
		1907
		1908	av_push (av_async_pool, newSVsv (coro_current));
		1909	}
		1910
		1911
1359	MODULE = Coro::State PACKAGE = Coro::AIO	1912	MODULE = Coro::State PACKAGE = Coro::AIO
1360		1913
1361	SV *	1914	SV *
1362	_get_state ()	1915	_get_state ()
1363	CODE:	1916	CODE:

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Comparing Coro/Coro/State.xs (file contents): Revision 1.137 by root, Sun Jan 14 20:47:53 2007 UTC vs. Revision 1.213 by root, Thu Oct 11 00:40:48 2007 UTC

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Comparing Coro/Coro/State.xs (file contents):
Revision 1.137 by root, Sun Jan 14 20:47:53 2007 UTC vs.
Revision 1.213 by root, Thu Oct 11 00:40:48 2007 UTC