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

Comparing Coro/Coro/State.xs (file contents):
Revision 1.107 by root, Mon Nov 27 02:15:51 2006 UTC vs.
Revision 1.200 by root, Sun Oct 7 15:08:23 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	#if USE_VALGRIND
10	# include <valgrind/valgrind.h>
11	#endif
12
13	#define PERL_VERSION_ATLEAST(a,b,c) \
14	(PERL_REVISION > (a) \
15	\|\| (PERL_REVISION == (a) \
16	&& (PERL_VERSION > (b) \
17	\|\| (PERL_VERSION == (b) && PERLSUBVERSION >= (c)))))
18
19	#if !PERL_VERSION_ATLEAST (5,6,0)
20	# ifndef PL_ppaddr
21	# define PL_ppaddr ppaddr
22	# endif
23	# ifndef call_sv
24	# define call_sv perl_call_sv
25	# endif
26	# ifndef get_sv
27	# define get_sv perl_get_sv
28	# endif
29	# ifndef get_cv
30	# define get_cv perl_get_cv
31	# endif
32	# ifndef IS_PADGV
33	# define IS_PADGV(v) 0
34	# endif
35	# ifndef IS_PADCONST
36	# define IS_PADCONST(v) 0
37	# endif
38	#endif
39
40	#include <stdio.h>	12	#include <stdio.h>
41	#include <errno.h>	13	#include <errno.h>
42		14	#include <assert.h>
43	#if !__i386 && !__x86_64 && !__powerpc && !__m68k && !__alpha && !__mips && !__sparc64
44	# undef STACKGUARD
45	#endif
46
47	#ifndef STACKGUARD
48	# define STACKGUARD 0
49	#endif
50		15
51	#ifdef HAVE_MMAP	16	#ifdef HAVE_MMAP
52	# include <unistd.h>	17	# include <unistd.h>
53	# include <sys/mman.h>	18	# include <sys/mman.h>
54	# ifndef MAP_ANONYMOUS	19	# ifndef MAP_ANONYMOUS
69	#else	34	#else
70	# define PAGESIZE 0	35	# define PAGESIZE 0
71	# define BOOT_PAGESIZE (void)0	36	# define BOOT_PAGESIZE (void)0
72	#endif	37	#endif
73		38
74	/* The next macro should declare a variable stacklevel that contains and approximation	39	#if CORO_USE_VALGRIND
75	* to the current C stack pointer. Its property is that it changes with each call	40	# include <valgrind/valgrind.h>
76	* and should be unique. */	41	# define REGISTER_STACK(cctx,start,end) (cctx)->valgrind_id = VALGRIND_STACK_REGISTER ((start), (end))
		42	#else
		43	# define REGISTER_STACK(cctx,start,end)
		44	#endif
		45
		46	/* the maximum number of idle cctx that will be pooled */
		47	#define MAX_IDLE_CCTX 8
		48
		49	#define PERL_VERSION_ATLEAST(a,b,c) \
		50	(PERL_REVISION > (a) \
		51	\|\| (PERL_REVISION == (a) \
		52	&& (PERL_VERSION > (b) \
		53	\|\| (PERL_VERSION == (b) && PERLSUBVERSION >= (c)))))
		54
		55	#if !PERL_VERSION_ATLEAST (5,6,0)
		56	# ifndef PL_ppaddr
		57	# define PL_ppaddr ppaddr
		58	# endif
		59	# ifndef call_sv
		60	# define call_sv perl_call_sv
		61	# endif
		62	# ifndef get_sv
		63	# define get_sv perl_get_sv
		64	# endif
		65	# ifndef get_cv
		66	# define get_cv perl_get_cv
		67	# endif
		68	# ifndef IS_PADGV
		69	# define IS_PADGV(v) 0
		70	# endif
		71	# ifndef IS_PADCONST
		72	# define IS_PADCONST(v) 0
		73	# endif
		74	#endif
		75
		76	/* 5.8.7 */
		77	#ifndef SvRV_set
		78	# define SvRV_set(s,v) SvRV(s) = (v)
		79	#endif
		80
		81	/* 5.8.8 */
		82	#ifndef GV_NOTQUAL
		83	# define GV_NOTQUAL 0
		84	#endif
		85	#ifndef newSV
		86	# define newSV(l) NEWSV(0,l)
		87	#endif
		88
		89	#if !__i386 && !__x86_64 && !__powerpc && !__m68k && !__alpha && !__mips && !__sparc64
		90	# undef CORO_STACKGUARD
		91	#endif
		92
		93	#ifndef CORO_STACKGUARD
		94	# define CORO_STACKGUARD 0
		95	#endif
		96
		97	/* prefer perl internal functions over our own? */
		98	#ifndef CORO_PREFER_PERL_FUNCTIONS
		99	# define CORO_PREFER_PERL_FUNCTIONS 0
		100	#endif
		101
		102	/* The next macros try to return the current stack pointer, in an as
		103	* portable way as possible. */
77	#define dSTACKLEVEL int stacklevel	104	#define dSTACKLEVEL volatile char stacklevel
78	#define STACKLEVEL ((void *)&stacklevel)	105	#define STACKLEVEL ((void *)&stacklevel)
79		106
80	#define IN_DESTRUCT (PL_main_cv == Nullcv)	107	#define IN_DESTRUCT (PL_main_cv == Nullcv)
81		108
82	#if __GNUC__ >= 3	109	#if __GNUC__ >= 3
83	# define attribute(x) __attribute__(x)	110	# define attribute(x) __attribute__(x)
		111	# define BARRIER __asm__ __volatile__ ("" : : : "memory")
		112	# define expect(expr,value) __builtin_expect ((expr),(value))
84	#else	113	#else
85	# define attribute(x)	114	# define attribute(x)
		115	# define BARRIER
		116	# define expect(expr,value) (expr)
86	#endif	117	#endif
		118
		119	#define expect_false(expr) expect ((expr) != 0, 0)
		120	#define expect_true(expr) expect ((expr) != 0, 1)
87		121
88	#define NOINLINE attribute ((noinline))	122	#define NOINLINE attribute ((noinline))
89		123
90	#include "CoroAPI.h"	124	#include "CoroAPI.h"
91
92	#define TRANSFER_SET_STACKLEVEL 0x8bfbfbfb /* magic cookie */
93		125
94	#ifdef USE_ITHREADS	126	#ifdef USE_ITHREADS
95	static perl_mutex coro_mutex;	127	static perl_mutex coro_mutex;
96	# define LOCK do { MUTEX_LOCK (&coro_mutex); } while (0)	128	# define LOCK do { MUTEX_LOCK (&coro_mutex); } while (0)
97	# define UNLOCK do { MUTEX_UNLOCK (&coro_mutex); } while (0)	129	# define UNLOCK do { MUTEX_UNLOCK (&coro_mutex); } while (0)
98	#else	130	#else
99	# define LOCK (void)0	131	# define LOCK (void)0
100	# define UNLOCK (void)0	132	# define UNLOCK (void)0
101	#endif	133	#endif
102		134
		135	#define strpair(const) const, sizeof (const) - 1
		136
		137	/* helper storage struct for Coro::AIO */
		138	struct io_state
		139	{
		140	int errorno;
		141	I32 laststype;
		142	int laststatval;
		143	Stat_t statcache;
		144	};
		145
		146	static size_t coro_stacksize = CORO_STACKSIZE;
103	static struct CoroAPI coroapi;	147	static struct CoroAPI coroapi;
104	static AV main_mainstack; / used to differentiate between $main and others */	148	static AV main_mainstack; / used to differentiate between $main and others */
		149	static JMPENV *main_top_env;
105	static HV coro_state_stash, coro_stash;	150	static HV coro_state_stash, coro_stash;
106	static SV coro_mortal; / will be freed after next transfer */	151	static SV coro_mortal; / will be freed after next transfer */
107		152
		153	static GV irsgv; / $/ */
		154	static GV stdoutgv; / STDOUT /
		155
		156	static HV hv_sig; / %SIG */
		157	static SV *sv_diehook;
		158	static SV *sv_warnhook;
		159
		160	/* async_pool helper stuff */
		161	static SV *sv_pool_rss;
		162	static SV *sv_pool_size;
		163	static AV *av_async_pool;
		164
108	static struct coro_cctx *cctx_first;	165	static struct coro_cctx *cctx_first;
109	static int cctx_count, cctx_idle;	166	static int cctx_count, cctx_idle;
		167
		168	enum {
		169	CC_MAPPED = 0x01,
		170	CC_NOREUSE = 0x02, /* throw this away after tracing */
		171	CC_TRACE = 0x04,
		172	CC_TRACE_SUB = 0x08, /* trace sub calls */
		173	CC_TRACE_LINE = 0x10, /* trace each statement */
		174	CC_TRACE_ALL = CC_TRACE_SUB \| CC_TRACE_LINE,
		175	};
110		176
111	/* this is a structure representing a c-level coroutine */	177	/* this is a structure representing a c-level coroutine */
112	typedef struct coro_cctx {	178	typedef struct coro_cctx {
113	struct coro_cctx *next;	179	struct coro_cctx *next;
114		180
115	/* the stack */	181	/* the stack */
116	void *sptr;	182	void *sptr;
117	long ssize; /* positive == mmap, otherwise malloc */	183	size_t ssize;
118		184
119	/* cpu state */	185	/* cpu state */
120	void idle_sp; / sp of top-level transfer/schedule/cede call */	186	void idle_sp; / sp of top-level transfer/schedule/cede call */
		187	JMPENV idle_te; / same as idle_sp, but for top_env, TODO: remove once stable */
121	JMPENV *top_env;	188	JMPENV *top_env;
122	coro_context cctx;	189	coro_context cctx;
123		190
124	#if USE_VALGRIND	191	#if CORO_USE_VALGRIND
125	int valgrind_id;	192	int valgrind_id;
126	#endif	193	#endif
		194	unsigned char flags;
127	} coro_cctx;	195	} coro_cctx;
		196
		197	enum {
		198	CF_RUNNING = 0x0001, /* coroutine is running */
		199	CF_READY = 0x0002, /* coroutine is ready */
		200	CF_NEW = 0x0004, /* has never been switched to */
		201	CF_DESTROYED = 0x0008, /* coroutine data has been freed */
		202	};
		203
		204	/* the structure where most of the perl state is stored, overlaid on the cxstack */
		205	typedef struct {
		206	SV *defsv;
		207	AV *defav;
		208	SV *errsv;
		209	SV *irsgv;
		210	#define VAR(name,type) type name;
		211	# include "state.h"
		212	#undef VAR
		213	} perl_slots;
		214
		215	#define SLOT_COUNT ((sizeof (perl_slots) + sizeof (PERL_CONTEXT) - 1) / sizeof (PERL_CONTEXT))
128		216
129	/* this is a structure representing a perl-level coroutine */	217	/* this is a structure representing a perl-level coroutine */
130	struct coro {	218	struct coro {
131	/* the c coroutine allocated to this perl coroutine, if any */	219	/* the c coroutine allocated to this perl coroutine, if any */
132	coro_cctx *cctx;	220	coro_cctx *cctx;
133		221
		222	/* process data */
		223	AV *mainstack;
		224	perl_slots slot; / basically the saved sp */
		225
134	/* data associated with this coroutine (initial args) */	226	/* data associated with this coroutine (initial args) */
135	AV *args;	227	AV *args;
136	int refcnt;	228	int refcnt;
		229	int flags; /* CF_ flags */
137		230
138	/* optionally saved, might be zero */	231	/* statistics */
139	AV *defav;	232	int usecount; /* number of transfers to this coro */
140	SV *defsv;
141	SV *errsv;
142
143	/* saved global state not related to stacks */
144	U8 dowarn;
145	I32 in_eval;
146
147	/* the stacks and related info (callchain etc..) */
148	PERL_SI *curstackinfo;
149	AV *curstack;
150	AV *mainstack;
151	SV **stack_sp;
152	OP *op;
153	SV **curpad;
154	AV *comppad;
155	CV *compcv;
156	SV **stack_base;
157	SV **stack_max;
158	SV **tmps_stack;
159	I32 tmps_floor;
160	I32 tmps_ix;
161	I32 tmps_max;
162	I32 *markstack;
163	I32 *markstack_ptr;
164	I32 *markstack_max;
165	I32 *scopestack;
166	I32 scopestack_ix;
167	I32 scopestack_max;
168	ANY *savestack;
169	I32 savestack_ix;
170	I32 savestack_max;
171	OP **retstack;
172	I32 retstack_ix;
173	I32 retstack_max;
174	PMOP *curpm;
175	COP *curcop;
176		233
177	/* coro process data */	234	/* coro process data */
178	int prio;	235	int prio;
		236	SV *throw;
		237
		238	/* async_pool */
		239	SV *saved_deffh;
		240
		241	/* linked list */
		242	struct coro next, prev;
		243	HV hv; / the perl hash associated with this coro, if any */
179	};	244	};
180		245
181	typedef struct coro *Coro__State;	246	typedef struct coro *Coro__State;
182	typedef struct coro *Coro__State_or_hashref;	247	typedef struct coro *Coro__State_or_hashref;
183		248
		249	/ Coro ******************************************************************/
		250
		251	#define PRIO_MAX 3
		252	#define PRIO_HIGH 1
		253	#define PRIO_NORMAL 0
		254	#define PRIO_LOW -1
		255	#define PRIO_IDLE -3
		256	#define PRIO_MIN -4
		257
		258	/* for Coro.pm */
		259	static SV *coro_current;
		260	static AV *coro_ready [PRIO_MAX-PRIO_MIN+1];
		261	static int coro_nready;
		262	static struct coro *coro_first;
		263
		264	/ lowlevel stuff ********************************************************/
		265
		266	static SV *
		267	coro_get_sv (const char *name, int create)
		268	{
		269	#if PERL_VERSION_ATLEAST (5,9,0)
		270	/* silence stupid and wrong 5.10 warning that I am unable to switch off */
		271	get_sv (name, create);
		272	#endif
		273	return get_sv (name, create);
		274	}
		275
184	static AV *	276	static AV *
		277	coro_get_av (const char *name, int create)
		278	{
		279	#if PERL_VERSION_ATLEAST (5,9,0)
		280	/* silence stupid and wrong 5.10 warning that I am unable to switch off */
		281	get_av (name, create);
		282	#endif
		283	return get_av (name, create);
		284	}
		285
		286	static HV *
		287	coro_get_hv (const char *name, int create)
		288	{
		289	#if PERL_VERSION_ATLEAST (5,9,0)
		290	/* silence stupid and wrong 5.10 warning that I am unable to switch off */
		291	get_hv (name, create);
		292	#endif
		293	return get_hv (name, create);
		294	}
		295
		296	static AV *
185	coro_clone_padlist (CV *cv)	297	coro_clone_padlist (pTHX_ CV *cv)
186	{	298	{
187	AV *padlist = CvPADLIST (cv);	299	AV *padlist = CvPADLIST (cv);
188	AV newpadlist, newpad;	300	AV newpadlist, newpad;
189		301
190	newpadlist = newAV ();	302	newpadlist = newAV ();
…		…
202		314
203	return newpadlist;	315	return newpadlist;
204	}	316	}
205		317
206	static void	318	static void
207	free_padlist (AV *padlist)	319	free_padlist (pTHX_ AV *padlist)
208	{	320	{
209	/* may be during global destruction */	321	/* may be during global destruction */
210	if (SvREFCNT (padlist))	322	if (SvREFCNT (padlist))
211	{	323	{
212	I32 i = AvFILLp (padlist);	324	I32 i = AvFILLp (padlist);
…		…
233	AV *padlist;	345	AV *padlist;
234	AV av = (AV )mg->mg_obj;	346	AV av = (AV )mg->mg_obj;
235		347
236	/* casting is fun. */	348	/* casting is fun. */
237	while (&PL_sv_undef != (SV )(padlist = (AV )av_pop (av)))	349	while (&PL_sv_undef != (SV )(padlist = (AV )av_pop (av)))
238	free_padlist (padlist);	350	free_padlist (aTHX_ padlist);
239		351
240	SvREFCNT_dec (av);	352	SvREFCNT_dec (av);
241		353
242	return 0;	354	return 0;
243	}	355	}
244		356
245	#define PERL_MAGIC_coro PERL_MAGIC_ext	357	#define PERL_MAGIC_coro PERL_MAGIC_ext
246		358
247	static MGVTBL vtbl_coro = {0, 0, 0, 0, coro_cv_free};	359	static MGVTBL vtbl_coro = {0, 0, 0, 0, coro_cv_free};
248		360
		361	#define CORO_MAGIC(cv) \
		362	SvMAGIC (cv) \
		363	? SvMAGIC (cv)->mg_type == PERL_MAGIC_coro \
		364	? SvMAGIC (cv) \
		365	: mg_find ((SV *)cv, PERL_MAGIC_coro) \
		366	: 0
		367
		368	static struct coro *
		369	SvSTATE_ (pTHX_ SV *coro)
		370	{
		371	HV *stash;
		372	MAGIC *mg;
		373
		374	if (SvROK (coro))
		375	coro = SvRV (coro);
		376
		377	if (expect_false (SvTYPE (coro) != SVt_PVHV))
		378	croak ("Coro::State object required");
		379
		380	stash = SvSTASH (coro);
		381	if (expect_false (stash != coro_stash && stash != coro_state_stash))
		382	{
		383	/* very slow, but rare, check */
		384	if (!sv_derived_from (sv_2mortal (newRV_inc (coro)), "Coro::State"))
		385	croak ("Coro::State object required");
		386	}
		387
		388	mg = CORO_MAGIC (coro);
		389	return (struct coro *)mg->mg_ptr;
		390	}
		391
		392	#define SvSTATE(sv) SvSTATE_ (aTHX_ (sv))
		393
249	/* the next two functions merely cache the padlists */	394	/* the next two functions merely cache the padlists */
250	static void	395	static void
251	get_padlist (CV *cv)	396	get_padlist (pTHX_ CV *cv)
252	{	397	{
253	MAGIC mg = mg_find ((SV )cv, PERL_MAGIC_coro);	398	MAGIC *mg = CORO_MAGIC (cv);
		399	AV *av;
254		400
255	if (mg && AvFILLp ((AV *)mg->mg_obj) >= 0)	401	if (expect_true (mg && AvFILLp ((av = (AV *)mg->mg_obj)) >= 0))
256	CvPADLIST (cv) = (AV )av_pop ((AV )mg->mg_obj);	402	CvPADLIST (cv) = (AV *)AvARRAY (av)[AvFILLp (av)--];
257	else	403	else
258	{	404	{
259	#if 0	405	#if CORO_PREFER_PERL_FUNCTIONS
260	/* this is probably cleaner, but also slower? */	406	/* this is probably cleaner, but also slower? */
261	CV *cp = Perl_cv_clone (cv);	407	CV *cp = Perl_cv_clone (cv);
262	CvPADLIST (cv) = CvPADLIST (cp);	408	CvPADLIST (cv) = CvPADLIST (cp);
263	CvPADLIST (cp) = 0;	409	CvPADLIST (cp) = 0;
264	SvREFCNT_dec (cp);	410	SvREFCNT_dec (cp);
265	#else	411	#else
266	CvPADLIST (cv) = coro_clone_padlist (cv);	412	CvPADLIST (cv) = coro_clone_padlist (aTHX_ cv);
267	#endif	413	#endif
268	}	414	}
269	}	415	}
270		416
271	static void	417	static void
272	put_padlist (CV *cv)	418	put_padlist (pTHX_ CV *cv)
273	{	419	{
274	MAGIC mg = mg_find ((SV )cv, PERL_MAGIC_coro);	420	MAGIC *mg = CORO_MAGIC (cv);
		421	AV *av;
275		422
276	if (!mg)	423	if (expect_false (!mg))
277	{	424	{
278	sv_magic ((SV *)cv, 0, PERL_MAGIC_coro, 0, 0);	425	sv_magic ((SV *)cv, 0, PERL_MAGIC_coro, 0, 0);
279	mg = mg_find ((SV *)cv, PERL_MAGIC_coro);	426	mg = mg_find ((SV *)cv, PERL_MAGIC_coro);
280	mg->mg_virtual = &vtbl_coro;	427	mg->mg_virtual = &vtbl_coro;
281	mg->mg_obj = (SV *)newAV ();	428	mg->mg_obj = (SV *)newAV ();
282	}	429	}
283		430
284	av_push ((AV )mg->mg_obj, (SV )CvPADLIST (cv));	431	av = (AV *)mg->mg_obj;
285	}
286		432
287	#define SB do {	433	if (expect_false (AvFILLp (av) >= AvMAX (av)))
288	#define SE } while (0)	434	av_extend (av, AvMAX (av) + 1);
289		435
290	#define LOAD(state) load_state((state));	436	AvARRAY (av)[++AvFILLp (av)] = (SV *)CvPADLIST (cv);
291	#define SAVE(state,flags) save_state((state),(flags));	437	}
292		438
293	#define REPLACE_SV(sv,val) SB SvREFCNT_dec(sv); (sv) = (val); (val) = 0; SE	439	/ load & save, init *****************************************************/
294		440
295	static void	441	static void
296	load_state(Coro__State c)	442	load_perl (pTHX_ Coro__State c)
297	{	443	{
298	PL_dowarn = c->dowarn;	444	perl_slots *slot = c->slot;
299	PL_in_eval = c->in_eval;	445	c->slot = 0;
300		446
301	PL_curstackinfo = c->curstackinfo;
302	PL_curstack = c->curstack;
303	PL_mainstack = c->mainstack;	447	PL_mainstack = c->mainstack;
304	PL_stack_sp = c->stack_sp;
305	PL_op = c->op;
306	PL_curpad = c->curpad;
307	PL_comppad = c->comppad;
308	PL_compcv = c->compcv;
309	PL_stack_base = c->stack_base;
310	PL_stack_max = c->stack_max;
311	PL_tmps_stack = c->tmps_stack;
312	PL_tmps_floor = c->tmps_floor;
313	PL_tmps_ix = c->tmps_ix;
314	PL_tmps_max = c->tmps_max;
315	PL_markstack = c->markstack;
316	PL_markstack_ptr = c->markstack_ptr;
317	PL_markstack_max = c->markstack_max;
318	PL_scopestack = c->scopestack;
319	PL_scopestack_ix = c->scopestack_ix;
320	PL_scopestack_max = c->scopestack_max;
321	PL_savestack = c->savestack;
322	PL_savestack_ix = c->savestack_ix;
323	PL_savestack_max = c->savestack_max;
324	#if !PERL_VERSION_ATLEAST (5,9,0)
325	PL_retstack = c->retstack;
326	PL_retstack_ix = c->retstack_ix;
327	PL_retstack_max = c->retstack_max;
328	#endif
329	PL_curpm = c->curpm;
330	PL_curcop = c->curcop;
331		448
332	if (c->defav) REPLACE_SV (GvAV (PL_defgv), c->defav);	449	GvSV (PL_defgv) = slot->defsv;
333	if (c->defsv) REPLACE_SV (DEFSV , c->defsv);	450	GvAV (PL_defgv) = slot->defav;
334	if (c->errsv) REPLACE_SV (ERRSV , c->errsv);	451	GvSV (PL_errgv) = slot->errsv;
		452	GvSV (irsgv) = slot->irsgv;
		453
		454	#define VAR(name,type) PL_ ## name = slot->name;
		455	# include "state.h"
		456	#undef VAR
335		457
336	{	458	{
337	dSP;	459	dSP;
		460
338	CV *cv;	461	CV *cv;
339		462
340	/* now do the ugly restore mess */	463	/* now do the ugly restore mess */
341	while ((cv = (CV *)POPs))	464	while (expect_true (cv = (CV *)POPs))
342	{	465	{
343	AV padlist = (AV )POPs;
344
345	if (padlist)
346	{
347	put_padlist (cv); /* mark this padlist as available */	466	put_padlist (aTHX_ cv); /* mark this padlist as available */
348	CvPADLIST(cv) = padlist;	467	CvDEPTH (cv) = PTR2IV (POPs);
349	}	468	CvPADLIST (cv) = (AV *)POPs;
350
351	++CvDEPTH(cv);
352	}	469	}
353		470
354	PUTBACK;	471	PUTBACK;
355	}	472	}
356	}	473	}
357		474
358	static void	475	static void
359	save_state(Coro__State c, int flags)	476	save_perl (pTHX_ Coro__State c)
360	{	477	{
361	{	478	{
362	dSP;	479	dSP;
363	I32 cxix = cxstack_ix;	480	I32 cxix = cxstack_ix;
364	PERL_CONTEXT *ccstk = cxstack;	481	PERL_CONTEXT *ccstk = cxstack;
…		…
367	/*	484	/*
368	* the worst thing you can imagine happens first - we have to save	485	* the worst thing you can imagine happens first - we have to save
369	* (and reinitialize) all cv's in the whole callchain :(	486	* (and reinitialize) all cv's in the whole callchain :(
370	*/	487	*/
371		488
372	PUSHs (Nullsv);	489	XPUSHs (Nullsv);
373	/* this loop was inspired by pp_caller */	490	/* this loop was inspired by pp_caller */
374	for (;;)	491	for (;;)
375	{	492	{
376	while (cxix >= 0)	493	while (expect_true (cxix >= 0))
377	{	494	{
378	PERL_CONTEXT *cx = &ccstk[cxix--];	495	PERL_CONTEXT *cx = &ccstk[cxix--];
379		496
380	if (CxTYPE(cx) == CXt_SUB)	497	if (expect_true (CxTYPE (cx) == CXt_SUB \|\| CxTYPE (cx) == CXt_FORMAT))
381	{	498	{
382	CV *cv = cx->blk_sub.cv;	499	CV *cv = cx->blk_sub.cv;
		500
383	if (CvDEPTH(cv))	501	if (expect_true (CvDEPTH (cv)))
384	{	502	{
385	EXTEND (SP, CvDEPTH(cv)*2);	503	EXTEND (SP, 3);
386
387	while (--CvDEPTH(cv))
388	{
389	/* this tells the restore code to increment CvDEPTH */
390	PUSHs (Nullsv);
391	PUSHs ((SV *)cv);
392	}
393
394	PUSHs ((SV *)CvPADLIST(cv));	504	PUSHs ((SV *)CvPADLIST (cv));
		505	PUSHs (INT2PTR (SV *, CvDEPTH (cv)));
395	PUSHs ((SV *)cv);	506	PUSHs ((SV *)cv);
396		507
		508	CvDEPTH (cv) = 0;
397	get_padlist (cv);	509	get_padlist (aTHX_ cv);
398	}	510	}
399	}	511	}
400	#ifdef CXt_FORMAT
401	else if (CxTYPE(cx) == CXt_FORMAT)
402	{
403	/* I never used formats, so how should I know how these are implemented? */
404	/* my bold guess is as a simple, plain sub... */
405	croak ("CXt_FORMAT not yet handled. Don't switch coroutines from within formats");
406	}
407	#endif
408	}	512	}
409		513
410	if (top_si->si_type == PERLSI_MAIN)	514	if (expect_true (top_si->si_type == PERLSI_MAIN))
411	break;	515	break;
412		516
413	top_si = top_si->si_prev;	517	top_si = top_si->si_prev;
414	ccstk = top_si->si_cxstack;	518	ccstk = top_si->si_cxstack;
415	cxix = top_si->si_cxix;	519	cxix = top_si->si_cxix;
416	}	520	}
417		521
418	PUTBACK;	522	PUTBACK;
419	}	523	}
420		524
421	c->defav = flags & TRANSFER_SAVE_DEFAV ? (AV *)SvREFCNT_inc (GvAV (PL_defgv)) : 0;	525	/* allocate some space on the context stack for our purposes */
422	c->defsv = flags & TRANSFER_SAVE_DEFSV ? SvREFCNT_inc (DEFSV) : 0;	526	{
423	c->errsv = flags & TRANSFER_SAVE_ERRSV ? SvREFCNT_inc (ERRSV) : 0;	527	/* we manually unroll here, as usually 2 slots is enough */
		528	int i;
		529	if (SLOT_COUNT >= 1) CXINC;
		530	if (SLOT_COUNT >= 2) CXINC;
		531	if (SLOT_COUNT >= 3) CXINC;
		532	for (i = 3; i < SLOT_COUNT; ++i)
		533	CXINC;
424		534
425	c->dowarn = PL_dowarn;	535	cxstack_ix -= SLOT_COUNT; /* undo allocation */
426	c->in_eval = PL_in_eval;	536	}
427		537
428	c->curstackinfo = PL_curstackinfo;
429	c->curstack = PL_curstack;
430	c->mainstack = PL_mainstack;	538	c->mainstack = PL_mainstack;
431	c->stack_sp = PL_stack_sp;	539
432	c->op = PL_op;	540	{
433	c->curpad = PL_curpad;	541	perl_slots slot = c->slot = (perl_slots )(cxstack + cxstack_ix + 1);
434	c->comppad = PL_comppad;	542
435	c->compcv = PL_compcv;	543	slot->defav = GvAV (PL_defgv);
436	c->stack_base = PL_stack_base;	544	slot->defsv = DEFSV;
437	c->stack_max = PL_stack_max;	545	slot->errsv = ERRSV;
438	c->tmps_stack = PL_tmps_stack;	546	slot->irsgv = GvSV (irsgv);
439	c->tmps_floor = PL_tmps_floor;	547
440	c->tmps_ix = PL_tmps_ix;	548	#define VAR(name,type) slot->name = PL_ ## name;
441	c->tmps_max = PL_tmps_max;	549	# include "state.h"
442	c->markstack = PL_markstack;	550	#undef VAR
443	c->markstack_ptr = PL_markstack_ptr;	551	}
444	c->markstack_max = PL_markstack_max;
445	c->scopestack = PL_scopestack;
446	c->scopestack_ix = PL_scopestack_ix;
447	c->scopestack_max = PL_scopestack_max;
448	c->savestack = PL_savestack;
449	c->savestack_ix = PL_savestack_ix;
450	c->savestack_max = PL_savestack_max;
451	#if !PERL_VERSION_ATLEAST (5,9,0)
452	c->retstack = PL_retstack;
453	c->retstack_ix = PL_retstack_ix;
454	c->retstack_max = PL_retstack_max;
455	#endif
456	c->curpm = PL_curpm;
457	c->curcop = PL_curcop;
458	}	552	}
459		553
460	/*	554	/*
461	* allocate various perl stacks. This is an exact copy	555	* allocate various perl stacks. This is an exact copy
462	* of perl.c:init_stacks, except that it uses less memory	556	* of perl.c:init_stacks, except that it uses less memory
463	* on the (sometimes correct) assumption that coroutines do	557	* on the (sometimes correct) assumption that coroutines do
464	* not usually need a lot of stackspace.	558	* not usually need a lot of stackspace.
465	*/	559	*/
		560	#if CORO_PREFER_PERL_FUNCTIONS
		561	# define coro_init_stacks init_stacks
		562	#else
466	static void	563	static void
467	coro_init_stacks ()	564	coro_init_stacks (pTHX)
468	{	565	{
469	PL_curstackinfo = new_stackinfo(96, 1024/sizeof(PERL_CONTEXT) - 1);	566	PL_curstackinfo = new_stackinfo(32, 8);
470	PL_curstackinfo->si_type = PERLSI_MAIN;	567	PL_curstackinfo->si_type = PERLSI_MAIN;
471	PL_curstack = PL_curstackinfo->si_stack;	568	PL_curstack = PL_curstackinfo->si_stack;
472	PL_mainstack = PL_curstack; /* remember in case we switch stacks */	569	PL_mainstack = PL_curstack; /* remember in case we switch stacks */
473		570
474	PL_stack_base = AvARRAY(PL_curstack);	571	PL_stack_base = AvARRAY(PL_curstack);
475	PL_stack_sp = PL_stack_base;	572	PL_stack_sp = PL_stack_base;
476	PL_stack_max = PL_stack_base + AvMAX(PL_curstack);	573	PL_stack_max = PL_stack_base + AvMAX(PL_curstack);
477		574
478	New(50,PL_tmps_stack,96,SV*);	575	New(50,PL_tmps_stack,32,SV*);
479	PL_tmps_floor = -1;	576	PL_tmps_floor = -1;
480	PL_tmps_ix = -1;	577	PL_tmps_ix = -1;
481	PL_tmps_max = 96;	578	PL_tmps_max = 32;
482		579
483	New(54,PL_markstack,16,I32);	580	New(54,PL_markstack,16,I32);
484	PL_markstack_ptr = PL_markstack;	581	PL_markstack_ptr = PL_markstack;
485	PL_markstack_max = PL_markstack + 16;	582	PL_markstack_max = PL_markstack + 16;
486		583
487	#ifdef SET_MARK_OFFSET	584	#ifdef SET_MARK_OFFSET
488	SET_MARK_OFFSET;	585	SET_MARK_OFFSET;
489	#endif	586	#endif
490		587
491	New(54,PL_scopestack,16,I32);	588	New(54,PL_scopestack,8,I32);
492	PL_scopestack_ix = 0;	589	PL_scopestack_ix = 0;
493	PL_scopestack_max = 16;	590	PL_scopestack_max = 8;
494		591
495	New(54,PL_savestack,96,ANY);	592	New(54,PL_savestack,24,ANY);
496	PL_savestack_ix = 0;	593	PL_savestack_ix = 0;
497	PL_savestack_max = 96;	594	PL_savestack_max = 24;
498		595
499	#if !PERL_VERSION_ATLEAST (5,9,0)	596	#if !PERL_VERSION_ATLEAST (5,9,0)
500	New(54,PL_retstack,8,OP*);	597	New(54,PL_retstack,4,OP*);
501	PL_retstack_ix = 0;	598	PL_retstack_ix = 0;
502	PL_retstack_max = 8;	599	PL_retstack_max = 4;
503	#endif	600	#endif
504	}	601	}
		602	#endif
505		603
506	/*	604	/*
507	* destroy the stacks, the callchain etc...	605	* destroy the stacks, the callchain etc...
508	*/	606	*/
509	static void	607	static void
510	coro_destroy_stacks ()	608	coro_destroy_stacks (pTHX)
511	{	609	{
512	if (!IN_DESTRUCT)
513	{
514	/* is this ugly, I ask? */
515	LEAVE_SCOPE (0);
516
517	/* sure it is, but more important: is it correct?? :/ */
518	FREETMPS;
519
520	/POPSTACK_TO (PL_mainstack);//D//use/
521	}
522
523	while (PL_curstackinfo->si_next)	610	while (PL_curstackinfo->si_next)
524	PL_curstackinfo = PL_curstackinfo->si_next;	611	PL_curstackinfo = PL_curstackinfo->si_next;
525		612
526	while (PL_curstackinfo)	613	while (PL_curstackinfo)
527	{	614	{
528	PERL_SI *p = PL_curstackinfo->si_prev;	615	PERL_SI *p = PL_curstackinfo->si_prev;
529		616
530	{ /D//remove/
531	dSP;
532	SWITCHSTACK (PL_curstack, PL_curstackinfo->si_stack);
533	PUTBACK; /* possibly superfluous */
534	}
535
536	if (!IN_DESTRUCT)	617	if (!IN_DESTRUCT)
537	{
538	dounwind (-1);/D//remove/
539	SvREFCNT_dec (PL_curstackinfo->si_stack);	618	SvREFCNT_dec (PL_curstackinfo->si_stack);
540	}
541		619
542	Safefree (PL_curstackinfo->si_cxstack);	620	Safefree (PL_curstackinfo->si_cxstack);
543	Safefree (PL_curstackinfo);	621	Safefree (PL_curstackinfo);
544	PL_curstackinfo = p;	622	PL_curstackinfo = p;
545	}	623	}
…		…
551	#if !PERL_VERSION_ATLEAST (5,9,0)	629	#if !PERL_VERSION_ATLEAST (5,9,0)
552	Safefree (PL_retstack);	630	Safefree (PL_retstack);
553	#endif	631	#endif
554	}	632	}
555		633
556	static void	634	static size_t
557	setup_coro (struct coro *coro)	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
		671	/ coroutine stack handling **********************************************/
		672
		673	static void
		674	coro_setup (pTHX_ struct coro *coro)
558	{	675	{
559	/*	676	/*
560	* emulate part of the perl startup here.	677	* emulate part of the perl startup here.
561	*/	678	*/
562
563	coro_init_stacks ();	679	coro_init_stacks (aTHX);
564		680
		681	PL_runops = RUNOPS_DEFAULT;
		682	PL_curcop = &PL_compiling;
		683	PL_in_eval = EVAL_NULL;
565	PL_curcop = 0;	684	PL_comppad = 0;
566	PL_in_eval = 0;
567	PL_curpm = 0;	685	PL_curpm = 0;
		686	PL_curpad = 0;
		687	PL_localizing = 0;
		688	PL_dirty = 0;
		689	PL_restartop = 0;
		690	SvREFCNT_inc (PL_diehook ); hv_store (hv_sig, strpair ("__DIE__" ), SvREFCNT_inc (sv_diehook ), 0);
		691	SvREFCNT_inc (PL_warnhook); hv_store (hv_sig, strpair ("__WARN__"), 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);
568		699
569	{	700	{
570	dSP;	701	dSP;
571	LOGOP myop;	702	LOGOP myop;
572		703
573	/* I have no idea why this is needed, but it is */
574	PUSHMARK (SP);
575
576	SvREFCNT_dec (GvAV (PL_defgv));
577	GvAV (PL_defgv) = coro->args; coro->args = 0;
578
579	Zero (&myop, 1, LOGOP);	704	Zero (&myop, 1, LOGOP);
580	myop.op_next = Nullop;	705	myop.op_next = Nullop;
581	myop.op_flags = OPf_WANT_VOID;	706	myop.op_flags = OPf_WANT_VOID;
582		707
		708	PUSHMARK (SP);
		709	XPUSHs (sv_2mortal (av_shift (GvAV (PL_defgv))));
		710	PUTBACK;
583	PL_op = (OP *)&myop;	711	PL_op = (OP *)&myop;
584
585	PUSHMARK (SP);
586	XPUSHs ((SV *)get_cv ("Coro::State::_coro_init", FALSE));
587	PUTBACK;
588	PL_op = PL_ppaddr[OP_ENTERSUB](aTHX);	712	PL_op = PL_ppaddr[OP_ENTERSUB](aTHX);
589	SPAGAIN;	713	SPAGAIN;
590
591	ENTER; /* necessary e.g. for dounwind */
592	}	714	}
593	}
594		715
		716	ENTER; /* necessary e.g. for dounwind and to balance the xsub-entersub */
		717	}
		718
595	static void	719	static void
		720	coro_destroy (pTHX_ struct coro *coro)
		721	{
		722	if (!IN_DESTRUCT)
		723	{
		724	/* restore all saved variables and stuff */
		725	LEAVE_SCOPE (0);
		726	assert (PL_tmps_floor == -1);
		727
		728	/* free all temporaries */
		729	FREETMPS;
		730	assert (PL_tmps_ix == -1);
		731
		732	/* unwind all extra stacks */
		733	POPSTACK_TO (PL_mainstack);
		734
		735	/* unwind main stack */
		736	dounwind (-1);
		737	}
		738
		739	SvREFCNT_dec (GvSV (PL_defgv));
		740	SvREFCNT_dec (GvAV (PL_defgv));
		741	SvREFCNT_dec (GvSV (PL_errgv));
		742	SvREFCNT_dec (PL_defoutgv);
		743	SvREFCNT_dec (PL_rs);
		744	SvREFCNT_dec (GvSV (irsgv));
		745
		746	SvREFCNT_dec (PL_diehook);
		747	SvREFCNT_dec (PL_warnhook);
		748
		749	SvREFCNT_dec (coro->saved_deffh);
		750	SvREFCNT_dec (coro->throw);
		751
		752	coro_destroy_stacks (aTHX);
		753	}
		754
		755	static void
596	free_coro_mortal ()	756	free_coro_mortal (pTHX)
597	{	757	{
598	if (coro_mortal)	758	if (expect_true (coro_mortal))
599	{	759	{
600	SvREFCNT_dec (coro_mortal);	760	SvREFCNT_dec (coro_mortal);
601	coro_mortal = 0;	761	coro_mortal = 0;
602	}	762	}
603	}	763	}
604		764
		765	static int
		766	runops_trace (pTHX)
		767	{
		768	COP *oldcop = 0;
		769	int oldcxix = -2;
		770	struct coro coro = SvSTATE (coro_current); / trace cctx is tied to specific coro */
		771	coro_cctx *cctx = coro->cctx;
		772
		773	while ((PL_op = CALL_FPTR (PL_op->op_ppaddr) (aTHX)))
		774	{
		775	PERL_ASYNC_CHECK ();
		776
		777	if (cctx->flags & CC_TRACE_ALL)
		778	{
		779	if (PL_op->op_type == OP_LEAVESUB && cctx->flags & CC_TRACE_SUB)
		780	{
		781	PERL_CONTEXT *cx = &cxstack[cxstack_ix];
		782	SV bot, top;
		783	AV av = newAV (); / return values */
		784	SV **cb;
		785	dSP;
		786
		787	GV *gv = CvGV (cx->blk_sub.cv);
		788	SV *fullname = sv_2mortal (newSV (0));
		789	if (isGV (gv))
		790	gv_efullname3 (fullname, gv, 0);
		791
		792	bot = PL_stack_base + cx->blk_oldsp + 1;
		793	top = cx->blk_gimme == G_ARRAY ? SP + 1
		794	: cx->blk_gimme == G_SCALAR ? bot + 1
		795	: bot;
		796
		797	av_extend (av, top - bot);
		798	while (bot < top)
		799	av_push (av, SvREFCNT_inc (*bot++));
		800
		801	PL_runops = RUNOPS_DEFAULT;
		802	ENTER;
		803	SAVETMPS;
		804	EXTEND (SP, 3);
		805	PUSHMARK (SP);
		806	PUSHs (&PL_sv_no);
		807	PUSHs (fullname);
		808	PUSHs (sv_2mortal (newRV_noinc ((SV *)av)));
		809	PUTBACK;
		810	cb = hv_fetch ((HV *)SvRV (coro_current), strpair ("_trace_sub_cb"), 0);
		811	if (cb) call_sv (*cb, G_KEEPERR \| G_EVAL \| G_VOID \| G_DISCARD);
		812	SPAGAIN;
		813	FREETMPS;
		814	LEAVE;
		815	PL_runops = runops_trace;
		816	}
		817
		818	if (oldcop != PL_curcop)
		819	{
		820	oldcop = PL_curcop;
		821
		822	if (PL_curcop != &PL_compiling)
		823	{
		824	SV **cb;
		825
		826	if (oldcxix != cxstack_ix && cctx->flags & CC_TRACE_SUB)
		827	{
		828	PERL_CONTEXT *cx = &cxstack[cxstack_ix];
		829
		830	if (CxTYPE (cx) == CXt_SUB && oldcxix < cxstack_ix)
		831	{
		832	runops_proc_t old_runops = PL_runops;
		833	dSP;
		834	GV *gv = CvGV (cx->blk_sub.cv);
		835	SV *fullname = sv_2mortal (newSV (0));
		836
		837	if (isGV (gv))
		838	gv_efullname3 (fullname, gv, 0);
		839
		840	PL_runops = RUNOPS_DEFAULT;
		841	ENTER;
		842	SAVETMPS;
		843	EXTEND (SP, 3);
		844	PUSHMARK (SP);
		845	PUSHs (&PL_sv_yes);
		846	PUSHs (fullname);
		847	PUSHs (cx->blk_sub.hasargs ? sv_2mortal (newRV_inc ((SV *)cx->blk_sub.argarray)) : &PL_sv_undef);
		848	PUTBACK;
		849	cb = hv_fetch ((HV *)SvRV (coro_current), strpair ("_trace_sub_cb"), 0);
		850	if (cb) call_sv (*cb, G_KEEPERR \| G_EVAL \| G_VOID \| G_DISCARD);
		851	SPAGAIN;
		852	FREETMPS;
		853	LEAVE;
		854	PL_runops = runops_trace;
		855	}
		856
		857	oldcxix = cxstack_ix;
		858	}
		859
		860	if (cctx->flags & CC_TRACE_LINE)
		861	{
		862	dSP;
		863
		864	PL_runops = RUNOPS_DEFAULT;
		865	ENTER;
		866	SAVETMPS;
		867	EXTEND (SP, 3);
		868	PL_runops = RUNOPS_DEFAULT;
		869	PUSHMARK (SP);
		870	PUSHs (sv_2mortal (newSVpv (OutCopFILE (oldcop), 0)));
		871	PUSHs (sv_2mortal (newSViv (CopLINE (oldcop))));
		872	PUTBACK;
		873	cb = hv_fetch ((HV *)SvRV (coro_current), strpair ("_trace_line_cb"), 0);
		874	if (cb) call_sv (*cb, G_KEEPERR \| G_EVAL \| G_VOID \| G_DISCARD);
		875	SPAGAIN;
		876	FREETMPS;
		877	LEAVE;
		878	PL_runops = runops_trace;
		879	}
		880	}
		881	}
		882	}
		883	}
		884
		885	TAINT_NOT;
		886	return 0;
		887	}
		888
		889	/* inject a fake call to Coro::State::_cctx_init into the execution */
		890	/* _cctx_init should be careful, as it could be called at almost any time */
		891	/* during execution of a perl program */
605	static void NOINLINE	892	static void NOINLINE
606	prepare_cctx (coro_cctx *cctx)	893	prepare_cctx (pTHX_ coro_cctx *cctx)
607	{	894	{
608	dSP;	895	dSP;
609	LOGOP myop;	896	LOGOP myop;
610		897
		898	PL_top_env = &PL_start_env;
		899
		900	if (cctx->flags & CC_TRACE)
		901	PL_runops = runops_trace;
		902
611	Zero (&myop, 1, LOGOP);	903	Zero (&myop, 1, LOGOP);
612	myop.op_next = PL_op;	904	myop.op_next = PL_op;
613	myop.op_flags = OPf_WANT_VOID;	905	myop.op_flags = OPf_WANT_VOID \| OPf_STACKED;
614
615	sv_setiv (get_sv ("Coro::State::_cctx", FALSE), PTR2IV (cctx));
616		906
617	PUSHMARK (SP);	907	PUSHMARK (SP);
		908	EXTEND (SP, 2);
		909	PUSHs (sv_2mortal (newSViv (PTR2IV (cctx))));
618	XPUSHs ((SV *)get_cv ("Coro::State::_cctx_init", FALSE));	910	PUSHs ((SV *)get_cv ("Coro::State::_cctx_init", FALSE));
619	PUTBACK;	911	PUTBACK;
		912	PL_op = (OP *)&myop;
620	PL_restartop = PL_ppaddr[OP_ENTERSUB](aTHX);	913	PL_op = PL_ppaddr[OP_ENTERSUB](aTHX);
621	SPAGAIN;	914	SPAGAIN;
622	}	915	}
623		916
		917	/*
		918	* this is a _very_ stripped down perl interpreter ;)
		919	*/
624	static void	920	static void
625	coro_run (void *arg)	921	coro_run (void *arg)
626	{	922	{
		923	dTHX;
		924
627	/* coro_run is the alternative epilogue of transfer() */	925	/* coro_run is the alternative tail of transfer(), so unlock here. */
628	UNLOCK;	926	UNLOCK;
629		927
		928	/* we now skip the entersub that lead to transfer() */
		929	PL_op = PL_op->op_next;
		930
		931	/* inject a fake subroutine call to cctx_init */
		932	prepare_cctx (aTHX_ (coro_cctx *)arg);
		933
		934	/* somebody or something will hit me for both perl_run and PL_restartop */
		935	PL_restartop = PL_op;
		936	perl_run (PL_curinterp);
		937
630	/*	938	/*
631	* this is a _very_ stripped down perl interpreter ;)	939	* If perl-run returns we assume exit() was being called or the coro
		940	* fell off the end, which seems to be the only valid (non-bug)
		941	* reason for perl_run to return. We try to exit by jumping to the
		942	* bootstrap-time "top" top_env, as we cannot restore the "main"
		943	* coroutine as Coro has no such concept
632	*/	944	*/
633	PL_top_env = &PL_start_env;	945	PL_top_env = main_top_env;
634		946	JMPENV_JUMP (2); /* I do not feel well about the hardcoded 2 at all */
635	/* inject call to cctx_init */
636	prepare_cctx ((coro_cctx *)arg);
637
638	/* somebody will hit me for both perl_run and PL_restartop */
639	perl_run (PL_curinterp);
640
641	fputs ("FATAL: C coroutine fell over the edge of the world, aborting. Did you call exit in a coroutine?\n", stderr);
642	abort ();
643	}	947	}
644		948
645	static coro_cctx *	949	static coro_cctx *
646	cctx_new ()	950	cctx_new ()
647	{	951	{
648	coro_cctx *cctx;	952	coro_cctx *cctx;
		953	void *stack_start;
		954	size_t stack_size;
649		955
650	++cctx_count;	956	++cctx_count;
651		957
652	New (0, cctx, 1, coro_cctx);	958	Newz (0, cctx, 1, coro_cctx);
653		959
654	#if HAVE_MMAP	960	#if HAVE_MMAP
655		961
656	cctx->ssize = ((STACKSIZE * sizeof (long) + PAGESIZE - 1) / PAGESIZE + STACKGUARD) * PAGESIZE;	962	cctx->ssize = ((coro_stacksize * sizeof (long) + PAGESIZE - 1) / PAGESIZE + CORO_STACKGUARD) * PAGESIZE;
657	/* mmap suppsedly does allocate-on-write for us */	963	/* mmap supposedly does allocate-on-write for us */
658	cctx->sptr = mmap (0, cctx->ssize, PROT_EXEC\|PROT_READ\|PROT_WRITE, MAP_PRIVATE\|MAP_ANONYMOUS, 0, 0);	964	cctx->sptr = mmap (0, cctx->ssize, PROT_EXEC\|PROT_READ\|PROT_WRITE, MAP_PRIVATE\|MAP_ANONYMOUS, 0, 0);
659		965
660	if (cctx->sptr == (void *)-1)	966	if (cctx->sptr != (void *)-1)
661	{
662	perror ("FATAL: unable to mmap stack for coroutine");
663	_exit (EXIT_FAILURE);
664	}	967	{
665
666	# if STACKGUARD	968	# if CORO_STACKGUARD
667	mprotect (cctx->sptr, STACKGUARD * PAGESIZE, PROT_NONE);	969	mprotect (cctx->sptr, CORO_STACKGUARD * PAGESIZE, PROT_NONE);
668	# endif	970	# endif
		971	stack_start = CORO_STACKGUARD * PAGESIZE + (char *)cctx->sptr;
		972	stack_size = cctx->ssize - CORO_STACKGUARD * PAGESIZE;
		973	cctx->flags \|= CC_MAPPED;
		974	}
		975	else
		976	#endif
		977	{
		978	cctx->ssize = coro_stacksize * (long)sizeof (long);
		979	New (0, cctx->sptr, coro_stacksize, long);
669		980
670	#else
671
672	cctx->ssize = STACKSIZE * (long)sizeof (long);
673	New (0, cctx->sptr, STACKSIZE, long);
674
675	if (!cctx->sptr)	981	if (!cctx->sptr)
676	{	982	{
677	perror ("FATAL: unable to malloc stack for coroutine");	983	perror ("FATAL: unable to allocate stack for coroutine");
678	_exit (EXIT_FAILURE);	984	_exit (EXIT_FAILURE);
679	}	985	}
680		986
681	#endif	987	stack_start = cctx->sptr;
		988	stack_size = cctx->ssize;
		989	}
682		990
683	#if USE_VALGRIND	991	REGISTER_STACK (cctx, (char )stack_start, (char )stack_start + stack_size);
684	cctx->valgrind_id = VALGRIND_STACK_REGISTER (
685	STACKGUARD * PAGESIZE + (char *)cctx->sptr,
686	cctx->ssize + (char *)cctx->sptr
687	);
688	#endif
689
690	coro_create (&cctx->cctx, coro_run, (void *)cctx, cctx->sptr, cctx->ssize);	992	coro_create (&cctx->cctx, coro_run, (void *)cctx, stack_start, stack_size);
691		993
692	return cctx;	994	return cctx;
693	}	995	}
694		996
695	static void	997	static void
696	cctx_free (coro_cctx *cctx)	998	cctx_destroy (coro_cctx *cctx)
697	{	999	{
698	if (!cctx)	1000	if (!cctx)
699	return;	1001	return;
700		1002
701	--cctx_count;	1003	--cctx_count;
702		1004
703	#if USE_VALGRIND	1005	#if CORO_USE_VALGRIND
704	VALGRIND_STACK_DEREGISTER (cctx->valgrind_id);	1006	VALGRIND_STACK_DEREGISTER (cctx->valgrind_id);
705	#endif	1007	#endif
706		1008
707	#if HAVE_MMAP	1009	#if HAVE_MMAP
		1010	if (cctx->flags & CC_MAPPED)
708	munmap (cctx->sptr, cctx->ssize);	1011	munmap (cctx->sptr, cctx->ssize);
709	#else	1012	else
		1013	#endif
710	Safefree (cctx->sptr);	1014	Safefree (cctx->sptr);
711	#endif
712		1015
713	Safefree (cctx);	1016	Safefree (cctx);
714	}	1017	}
715		1018
		1019	/* wether this cctx should be destructed */
		1020	#define CCTX_EXPIRED(cctx) ((cctx)->ssize < coro_stacksize \|\| ((cctx)->flags & CC_NOREUSE))
		1021
716	static coro_cctx *	1022	static coro_cctx *
717	cctx_get ()	1023	cctx_get (pTHX)
718	{	1024	{
719	coro_cctx *cctx;	1025	while (expect_true (cctx_first))
720
721	if (cctx_first)
722	{	1026	{
		1027	coro_cctx *cctx = cctx_first;
		1028	cctx_first = cctx->next;
723	--cctx_idle;	1029	--cctx_idle;
724	cctx = cctx_first;	1030
725	cctx_first = cctx->next;	1031	if (expect_true (!CCTX_EXPIRED (cctx)))
726	}	1032	return cctx;
727	else	1033
728	{	1034	cctx_destroy (cctx);
729	cctx = cctx_new ();
730	PL_op = PL_op->op_next;
731	}	1035	}
732		1036
733	return cctx;	1037	return cctx_new ();
734	}	1038	}
735		1039
736	static void	1040	static void
737	cctx_put (coro_cctx *cctx)	1041	cctx_put (coro_cctx *cctx)
738	{	1042	{
		1043	/* free another cctx if overlimit */
		1044	if (expect_false (cctx_idle >= MAX_IDLE_CCTX))
		1045	{
		1046	coro_cctx *first = cctx_first;
		1047	cctx_first = first->next;
		1048	--cctx_idle;
		1049
		1050	cctx_destroy (first);
		1051	}
		1052
739	++cctx_idle;	1053	++cctx_idle;
740	cctx->next = cctx_first;	1054	cctx->next = cctx_first;
741	cctx_first = cctx;	1055	cctx_first = cctx;
742	}	1056	}
743		1057
744	/* never call directly, always through the coro_state_transfer global variable */	1058	/ coroutine switching ***************************************************/
		1059
		1060	static void
		1061	transfer_check (pTHX_ struct coro prev, struct coro next)
		1062	{
		1063	if (expect_true (prev != next))
		1064	{
		1065	if (expect_false (!(prev->flags & (CF_RUNNING \| CF_NEW))))
		1066	croak ("Coro::State::transfer called with non-running/new prev Coro::State, but can only transfer from running or new states");
		1067
		1068	if (expect_false (next->flags & CF_RUNNING))
		1069	croak ("Coro::State::transfer called with running next Coro::State, but can only transfer to inactive states");
		1070
		1071	if (expect_false (next->flags & CF_DESTROYED))
		1072	croak ("Coro::State::transfer called with destroyed next Coro::State, but can only transfer to inactive states");
		1073
		1074	if (
		1075	#if PERL_VERSION_ATLEAST (5,9,0)
		1076	expect_false (PL_parser)
		1077	#else
		1078	expect_false (PL_lex_state != LEX_NOTPARSING)
		1079	#endif
		1080	)
		1081	croak ("Coro::State::transfer called while parsing, but this is not supported");
		1082	}
		1083	}
		1084
		1085	/* always use the TRANSFER macro */
745	static void NOINLINE	1086	static void NOINLINE
746	transfer (struct coro prev, struct coro next, int flags)	1087	transfer (pTHX_ struct coro prev, struct coro next)
747	{	1088	{
748	dSTACKLEVEL;	1089	dSTACKLEVEL;
749		1090
750	/* sometimes transfer is only called to set idle_sp */	1091	/* sometimes transfer is only called to set idle_sp */
751	if (flags == TRANSFER_SET_STACKLEVEL)	1092	if (expect_false (!next))
		1093	{
752	((coro_cctx *)prev)->idle_sp = STACKLEVEL;	1094	((coro_cctx *)prev)->idle_sp = STACKLEVEL;
		1095	assert (((coro_cctx )prev)->idle_te = PL_top_env); / just for the side-effect when asserts are enabled */
		1096	}
753	else if (prev != next)	1097	else if (expect_true (prev != next))
754	{	1098	{
755	coro_cctx *prev__cctx;	1099	coro_cctx *prev__cctx;
756		1100
		1101	if (expect_false (prev->flags & CF_NEW))
		1102	{
		1103	/* create a new empty context */
		1104	Newz (0, prev->cctx, 1, coro_cctx);
		1105	prev->flags &= ~CF_NEW;
		1106	prev->flags \|= CF_RUNNING;
		1107	}
		1108
		1109	prev->flags &= ~CF_RUNNING;
		1110	next->flags \|= CF_RUNNING;
		1111
757	LOCK;	1112	LOCK;
758		1113
759	if (next->mainstack)	1114	if (expect_false (next->flags & CF_NEW))
760	{	1115	{
761	/* coroutine already started */	1116	/* need to start coroutine */
762	SAVE (prev, flags);	1117	next->flags &= ~CF_NEW;
763	LOAD (next);	1118	/* first get rid of the old state */
		1119	save_perl (aTHX_ prev);
		1120	/* setup coroutine call */
		1121	coro_setup (aTHX_ next);
764	}	1122	}
765	else	1123	else
766	{	1124	{
767	/* need to start coroutine */	1125	/* coroutine already started */
768	/* first get rid of the old state */	1126	save_perl (aTHX_ prev);
769	SAVE (prev, -1);	1127	load_perl (aTHX_ next);
770	/* setup coroutine call */
771	setup_coro (next);
772	/* need a stack */
773	next->cctx = 0;
774	}	1128	}
775		1129
776	if (!prev->cctx)
777	/* create a new empty context */
778	Newz (0, prev->cctx, 1, coro_cctx);
779
780	prev__cctx = prev->cctx;	1130	prev__cctx = prev->cctx;
781		1131
782	/* possibly "free" the cctx */	1132	/* possibly "free" the cctx */
783	if (prev__cctx->idle_sp == STACKLEVEL)	1133	if (expect_true (prev__cctx->idle_sp == STACKLEVEL && !(prev__cctx->flags & CC_TRACE)))
784	{	1134	{
		1135	/* I assume that STACKLEVEL is a stronger indicator than PL_top_env changes */
		1136	assert (("ERROR: current top_env must equal previous top_env", PL_top_env == prev__cctx->idle_te));
		1137
		1138	prev->cctx = 0;
		1139
		1140	/* if the cctx is about to be destroyed we need to make sure we won't see it in cctx_get */
		1141	/* without this the next cctx_get might destroy the prev__cctx while still in use */
		1142	if (expect_false (CCTX_EXPIRED (prev__cctx)))
		1143	next->cctx = cctx_get (aTHX);
		1144
785	cctx_put (prev__cctx);	1145	cctx_put (prev__cctx);
786	prev->cctx = 0;
787	}	1146	}
788		1147
		1148	++next->usecount;
		1149
789	if (!next->cctx)	1150	if (expect_true (!next->cctx))
790	next->cctx = cctx_get ();	1151	next->cctx = cctx_get (aTHX);
791		1152
792	if (prev__cctx != next->cctx)	1153	if (expect_false (prev__cctx != next->cctx))
793	{	1154	{
794	prev__cctx->top_env = PL_top_env;	1155	prev__cctx->top_env = PL_top_env;
795	PL_top_env = next->cctx->top_env;	1156	PL_top_env = next->cctx->top_env;
796	coro_transfer (&prev__cctx->cctx, &next->cctx->cctx);	1157	coro_transfer (&prev__cctx->cctx, &next->cctx->cctx);
797	}	1158	}
798		1159
799	free_coro_mortal ();	1160	free_coro_mortal (aTHX);
800
801	UNLOCK;	1161	UNLOCK;
		1162
		1163	if (expect_false (prev->throw \|\| next->throw))
		1164	{
		1165	struct coro *coro = SvSTATE (coro_current);
		1166
		1167	if (coro->throw)
		1168	{
		1169	SV *exception = coro->throw;
		1170	coro->throw = 0;
		1171	sv_setsv (ERRSV, exception);
		1172	croak (0);
		1173	}
		1174	}
802	}	1175	}
803	}	1176	}
804		1177
805	struct transfer_args	1178	struct transfer_args
806	{	1179	{
807	struct coro prev, next;	1180	struct coro prev, next;
808	int flags;
809	};	1181	};
810		1182
811	#define TRANSFER(ta) transfer ((ta).prev, (ta).next, (ta).flags)	1183	#define TRANSFER(ta) transfer (aTHX_ (ta).prev, (ta).next)
		1184	#define TRANSFER_CHECK(ta) transfer_check (aTHX_ (ta).prev, (ta).next)
812		1185
		1186	/ high level stuff ******************************************************/
		1187
813	static void	1188	static int
814	coro_state_destroy (struct coro *coro)	1189	coro_state_destroy (pTHX_ struct coro *coro)
815	{	1190	{
816	if (coro->refcnt--)	1191	if (coro->flags & CF_DESTROYED)
817	return;	1192	return 0;
		1193
		1194	coro->flags \|= CF_DESTROYED;
		1195
		1196	if (coro->flags & CF_READY)
		1197	{
		1198	/* reduce nready, as destroying a ready coro effectively unreadies it */
		1199	/* alternative: look through all ready queues and remove the coro */
		1200	LOCK;
		1201	--coro_nready;
		1202	UNLOCK;
		1203	}
		1204	else
		1205	coro->flags \|= CF_READY; /* make sure it is NOT put into the readyqueue */
818		1206
819	if (coro->mainstack && coro->mainstack != main_mainstack)	1207	if (coro->mainstack && coro->mainstack != main_mainstack)
820	{	1208	{
821	struct coro temp;	1209	struct coro temp;
822		1210
823	SAVE ((&temp), TRANSFER_SAVE_ALL);	1211	if (coro->flags & CF_RUNNING)
824	LOAD (coro);	1212	croak ("FATAL: tried to destroy currently running coroutine");
825		1213
826	coro_destroy_stacks ();	1214	save_perl (aTHX_ &temp);
		1215	load_perl (aTHX_ coro);
827		1216
828	LOAD ((&temp)); /* this will get rid of defsv etc.. */	1217	coro_destroy (aTHX_ coro);
829		1218
		1219	load_perl (aTHX_ &temp);
		1220
830	coro->mainstack = 0;	1221	coro->slot = 0;
831	}	1222	}
832		1223
833	cctx_free (coro->cctx);	1224	cctx_destroy (coro->cctx);
834	SvREFCNT_dec (coro->args);	1225	SvREFCNT_dec (coro->args);
835	Safefree (coro);	1226
		1227	if (coro->next) coro->next->prev = coro->prev;
		1228	if (coro->prev) coro->prev->next = coro->next;
		1229	if (coro == coro_first) coro_first = coro->next;
		1230
		1231	return 1;
836	}	1232	}
837		1233
838	static int	1234	static int
839	coro_state_clear (pTHX_ SV sv, MAGIC mg)	1235	coro_state_free (pTHX_ SV sv, MAGIC mg)
840	{	1236	{
841	struct coro coro = (struct coro )mg->mg_ptr;	1237	struct coro coro = (struct coro )mg->mg_ptr;
842	mg->mg_ptr = 0;	1238	mg->mg_ptr = 0;
843		1239
		1240	coro->hv = 0;
		1241
		1242	if (--coro->refcnt < 0)
		1243	{
844	coro_state_destroy (coro);	1244	coro_state_destroy (aTHX_ coro);
		1245	Safefree (coro);
		1246	}
845		1247
846	return 0;	1248	return 0;
847	}	1249	}
848		1250
849	static int	1251	static int
…		…
856	return 0;	1258	return 0;
857	}	1259	}
858		1260
859	static MGVTBL coro_state_vtbl = {	1261	static MGVTBL coro_state_vtbl = {
860	0, 0, 0, 0,	1262	0, 0, 0, 0,
861	coro_state_clear,	1263	coro_state_free,
862	0,	1264	0,
863	#ifdef MGf_DUP	1265	#ifdef MGf_DUP
864	coro_state_dup,	1266	coro_state_dup,
865	#else	1267	#else
866	# define MGf_DUP 0	1268	# define MGf_DUP 0
867	#endif	1269	#endif
868	};	1270	};
869		1271
870	static struct coro *
871	SvSTATE (SV *coro)
872	{
873	HV *stash;
874	MAGIC *mg;
875
876	if (SvROK (coro))
877	coro = SvRV (coro);
878
879	stash = SvSTASH (coro);
880	if (stash != coro_stash && stash != coro_state_stash)
881	{
882	/* very slow, but rare, check */
883	if (!sv_derived_from (sv_2mortal (newRV_inc (coro)), "Coro::State"))
884	croak ("Coro::State object required");
885	}
886
887	mg = SvMAGIC (coro);
888	assert (mg->mg_type == PERL_MAGIC_ext);
889	return (struct coro *)mg->mg_ptr;
890	}
891
892	static void	1272	static void
893	prepare_transfer (struct transfer_args ta, SV prev, SV *next, int flags)	1273	prepare_transfer (pTHX_ struct transfer_args ta, SV prev_sv, SV *next_sv)
894	{	1274	{
895	ta->prev = SvSTATE (prev);	1275	ta->prev = SvSTATE (prev_sv);
896	ta->next = SvSTATE (next);	1276	ta->next = SvSTATE (next_sv);
897	ta->flags = flags;	1277	TRANSFER_CHECK (*ta);
898	}	1278	}
899		1279
900	static void	1280	static void
901	api_transfer (SV prev, SV next, int flags)	1281	api_transfer (SV prev_sv, SV next_sv)
902	{	1282	{
903	dTHX;	1283	dTHX;
904	struct transfer_args ta;	1284	struct transfer_args ta;
905		1285
906	prepare_transfer (&ta, prev, next, flags);	1286	prepare_transfer (aTHX_ &ta, prev_sv, next_sv);
907	TRANSFER (ta);	1287	TRANSFER (ta);
908	}	1288	}
909		1289
910	/ Coro ******************************************************************/	1290	/ Coro ******************************************************************/
911		1291
912	#define PRIO_MAX 3
913	#define PRIO_HIGH 1
914	#define PRIO_NORMAL 0
915	#define PRIO_LOW -1
916	#define PRIO_IDLE -3
917	#define PRIO_MIN -4
918
919	/* for Coro.pm */
920	static GV coro_current, coro_idle;
921	static AV *coro_ready [PRIO_MAX-PRIO_MIN+1];
922	static int coro_nready;
923
924	static void	1292	static void
925	coro_enq (SV *sv)	1293	coro_enq (pTHX_ SV *coro_sv)
926	{	1294	{
927	int prio;
928
929	if (SvTYPE (sv) != SVt_PVHV)
930	croak ("Coro::ready tried to enqueue something that is not a coroutine");
931
932	prio = SvSTATE (sv)->prio;
933
934	av_push (coro_ready [prio - PRIO_MIN], sv);	1295	av_push (coro_ready [SvSTATE (coro_sv)->prio - PRIO_MIN], coro_sv);
935	coro_nready++;
936	}	1296	}
937		1297
938	static SV *	1298	static SV *
939	coro_deq (int min_prio)	1299	coro_deq (pTHX_ int min_prio)
940	{	1300	{
941	int prio = PRIO_MAX - PRIO_MIN;	1301	int prio = PRIO_MAX - PRIO_MIN;
942		1302
943	min_prio -= PRIO_MIN;	1303	min_prio -= PRIO_MIN;
944	if (min_prio < 0)	1304	if (min_prio < 0)
945	min_prio = 0;	1305	min_prio = 0;
946		1306
947	for (prio = PRIO_MAX - PRIO_MIN + 1; --prio >= min_prio; )	1307	for (prio = PRIO_MAX - PRIO_MIN + 1; --prio >= min_prio; )
948	if (AvFILLp (coro_ready [prio]) >= 0)	1308	if (AvFILLp (coro_ready [prio]) >= 0)
949	{
950	coro_nready--;
951	return av_shift (coro_ready [prio]);	1309	return av_shift (coro_ready [prio]);
952	}
953		1310
954	return 0;	1311	return 0;
955	}	1312	}
956		1313
957	static void	1314	static int
958	api_ready (SV *coro)	1315	api_ready (SV *coro_sv)
959	{	1316	{
960	dTHX;	1317	dTHX;
		1318	struct coro *coro;
961		1319
962	if (SvROK (coro))	1320	if (SvROK (coro_sv))
963	coro = SvRV (coro);	1321	coro_sv = SvRV (coro_sv);
		1322
		1323	coro = SvSTATE (coro_sv);
		1324
		1325	if (coro->flags & CF_READY)
		1326	return 0;
		1327
		1328	coro->flags \|= CF_READY;
964		1329
965	LOCK;	1330	LOCK;
966	coro_enq (SvREFCNT_inc (coro));	1331	coro_enq (aTHX_ SvREFCNT_inc (coro_sv));
		1332	++coro_nready;
967	UNLOCK;	1333	UNLOCK;
968	}
969		1334
		1335	return 1;
		1336	}
		1337
970	static void	1338	static int
		1339	api_is_ready (SV *coro_sv)
		1340	{
		1341	dTHX;
		1342	return !!(SvSTATE (coro_sv)->flags & CF_READY);
		1343	}
		1344
		1345	static void
971	prepare_schedule (struct transfer_args *ta)	1346	prepare_schedule (pTHX_ struct transfer_args *ta)
972	{	1347	{
973	SV current, prev, *next;	1348	SV prev_sv, next_sv;
974
975	current = GvSV (coro_current);
976		1349
977	for (;;)	1350	for (;;)
978	{	1351	{
979	LOCK;	1352	LOCK;
980	next = coro_deq (PRIO_MIN);	1353	next_sv = coro_deq (aTHX_ PRIO_MIN);
		1354
		1355	/* nothing to schedule: call the idle handler */
		1356	if (expect_false (!next_sv))
		1357	{
		1358	dSP;
		1359	UNLOCK;
		1360
		1361	ENTER;
		1362	SAVETMPS;
		1363
		1364	PUSHMARK (SP);
		1365	PUTBACK;
		1366	call_sv (get_sv ("Coro::idle", FALSE), G_DISCARD);
		1367
		1368	FREETMPS;
		1369	LEAVE;
		1370	continue;
		1371	}
		1372
		1373	ta->next = SvSTATE (next_sv);
		1374
		1375	/* cannot transfer to destroyed coros, skip and look for next */
		1376	if (expect_false (ta->next->flags & CF_DESTROYED))
		1377	{
		1378	UNLOCK;
		1379	SvREFCNT_dec (next_sv);
		1380	/* coro_nready is already taken care of by destroy */
		1381	continue;
		1382	}
		1383
		1384	--coro_nready;
981	UNLOCK;	1385	UNLOCK;
982
983	if (next)
984	break;	1386	break;
985
986	{
987	dSP;
988
989	ENTER;
990	SAVETMPS;
991
992	PUSHMARK (SP);
993	PUTBACK;
994	call_sv (GvSV (coro_idle), G_DISCARD);
995
996	FREETMPS;
997	LEAVE;
998	}	1387	}
999	}
1000
1001	prev = SvRV (current);
1002	SvRV (current) = next;
1003		1388
1004	/* free this only after the transfer */	1389	/* free this only after the transfer */
		1390	prev_sv = SvRV (coro_current);
		1391	ta->prev = SvSTATE (prev_sv);
		1392	TRANSFER_CHECK (*ta);
		1393	assert (ta->next->flags & CF_READY);
		1394	ta->next->flags &= ~CF_READY;
		1395	SvRV_set (coro_current, next_sv);
		1396
1005	LOCK;	1397	LOCK;
1006	free_coro_mortal ();	1398	free_coro_mortal (aTHX);
		1399	coro_mortal = prev_sv;
1007	UNLOCK;	1400	UNLOCK;
1008	coro_mortal = prev;
1009
1010	ta->prev = SvSTATE (prev);
1011	ta->next = SvSTATE (next);
1012	ta->flags = TRANSFER_SAVE_ALL;
1013	}	1401	}
1014		1402
1015	static void	1403	static void
1016	prepare_cede (struct transfer_args *ta)	1404	prepare_cede (pTHX_ struct transfer_args *ta)
1017	{	1405	{
1018	LOCK;	1406	api_ready (coro_current);
1019	coro_enq (SvREFCNT_inc (SvRV (GvSV (coro_current))));
1020	UNLOCK;
1021
1022	prepare_schedule (ta);	1407	prepare_schedule (aTHX_ ta);
		1408	}
		1409
		1410	static int
		1411	prepare_cede_notself (pTHX_ struct transfer_args *ta)
		1412	{
		1413	if (coro_nready)
		1414	{
		1415	SV *prev = SvRV (coro_current);
		1416	prepare_schedule (aTHX_ ta);
		1417	api_ready (prev);
		1418	return 1;
		1419	}
		1420	else
		1421	return 0;
1023	}	1422	}
1024		1423
1025	static void	1424	static void
1026	api_schedule (void)	1425	api_schedule (void)
1027	{	1426	{
1028	dTHX;	1427	dTHX;
1029	struct transfer_args ta;	1428	struct transfer_args ta;
1030		1429
1031	prepare_schedule (&ta);	1430	prepare_schedule (aTHX_ &ta);
1032	TRANSFER (ta);	1431	TRANSFER (ta);
1033	}	1432	}
1034		1433
1035	static void	1434	static int
1036	api_cede (void)	1435	api_cede (void)
1037	{	1436	{
1038	dTHX;	1437	dTHX;
1039	struct transfer_args ta;	1438	struct transfer_args ta;
1040		1439
1041	prepare_cede (&ta);	1440	prepare_cede (aTHX_ &ta);
		1441
		1442	if (expect_true (ta.prev != ta.next))
		1443	{
1042	TRANSFER (ta);	1444	TRANSFER (ta);
		1445	return 1;
		1446	}
		1447	else
		1448	return 0;
1043	}	1449	}
1044		1450
		1451	static int
		1452	api_cede_notself (void)
		1453	{
		1454	dTHX;
		1455	struct transfer_args ta;
		1456
		1457	if (prepare_cede_notself (aTHX_ &ta))
		1458	{
		1459	TRANSFER (ta);
		1460	return 1;
		1461	}
		1462	else
		1463	return 0;
		1464	}
		1465
		1466	static void
		1467	api_trace (SV *coro_sv, int flags)
		1468	{
		1469	dTHX;
		1470	struct coro *coro = SvSTATE (coro_sv);
		1471
		1472	if (flags & CC_TRACE)
		1473	{
		1474	if (!coro->cctx)
		1475	coro->cctx = cctx_new ();
		1476	else if (!(coro->cctx->flags & CC_TRACE))
		1477	croak ("cannot enable tracing on coroutine with custom stack");
		1478
		1479	coro->cctx->flags \|= CC_NOREUSE \| (flags & (CC_TRACE \| CC_TRACE_ALL));
		1480	}
		1481	else if (coro->cctx && coro->cctx->flags & CC_TRACE)
		1482	{
		1483	coro->cctx->flags &= ~(CC_TRACE \| CC_TRACE_ALL);
		1484
		1485	if (coro->flags & CF_RUNNING)
		1486	PL_runops = RUNOPS_DEFAULT;
		1487	else
		1488	coro->slot->runops = RUNOPS_DEFAULT;
		1489	}
		1490	}
		1491
1045	MODULE = Coro::State PACKAGE = Coro::State	1492	MODULE = Coro::State PACKAGE = Coro::State PREFIX = api_
1046		1493
1047	PROTOTYPES: DISABLE	1494	PROTOTYPES: DISABLE
1048		1495
1049	BOOT:	1496	BOOT:
1050	{	1497	{
1051	#ifdef USE_ITHREADS	1498	#ifdef USE_ITHREADS
1052	MUTEX_INIT (&coro_mutex);	1499	MUTEX_INIT (&coro_mutex);
1053	#endif	1500	#endif
1054	BOOT_PAGESIZE;	1501	BOOT_PAGESIZE;
1055		1502
		1503	irsgv = gv_fetchpv ("/" , GV_ADD\|GV_NOTQUAL, SVt_PV);
		1504	stdoutgv = gv_fetchpv ("STDOUT", GV_ADD\|GV_NOTQUAL, SVt_PVIO);
		1505
		1506	hv_sig = coro_get_hv ("SIG", TRUE);
		1507	sv_diehook = coro_get_sv ("Coro::State::DIEHOOK" , TRUE);
		1508	sv_warnhook = coro_get_sv ("Coro::State::WARNHOOK", TRUE);
		1509
		1510	if (!PL_diehook ) hv_store (hv_sig, strpair ("__DIE__" ), SvREFCNT_inc (sv_diehook ), 0);
		1511	if (!PL_warnhook) hv_store (hv_sig, strpair ("__WARN__"), SvREFCNT_inc (sv_warnhook), 0);
		1512
1056	coro_state_stash = gv_stashpv ("Coro::State", TRUE);	1513	coro_state_stash = gv_stashpv ("Coro::State", TRUE);
1057		1514
1058	newCONSTSUB (coro_state_stash, "SAVE_DEFAV", newSViv (TRANSFER_SAVE_DEFAV));	1515	newCONSTSUB (coro_state_stash, "CC_TRACE" , newSViv (CC_TRACE));
1059	newCONSTSUB (coro_state_stash, "SAVE_DEFSV", newSViv (TRANSFER_SAVE_DEFSV));	1516	newCONSTSUB (coro_state_stash, "CC_TRACE_SUB" , newSViv (CC_TRACE_SUB));
1060	newCONSTSUB (coro_state_stash, "SAVE_ERRSV", newSViv (TRANSFER_SAVE_ERRSV));	1517	newCONSTSUB (coro_state_stash, "CC_TRACE_LINE", newSViv (CC_TRACE_LINE));
		1518	newCONSTSUB (coro_state_stash, "CC_TRACE_ALL" , newSViv (CC_TRACE_ALL));
1061		1519
1062	main_mainstack = PL_mainstack;	1520	main_mainstack = PL_mainstack;
		1521	main_top_env = PL_top_env;
		1522
		1523	while (main_top_env->je_prev)
		1524	main_top_env = main_top_env->je_prev;
1063		1525
1064	coroapi.ver = CORO_API_VERSION;	1526	coroapi.ver = CORO_API_VERSION;
1065	coroapi.transfer = api_transfer;	1527	coroapi.transfer = api_transfer;
1066		1528
1067	assert (("PRIO_NORMAL must be 0", !PRIO_NORMAL));	1529	assert (("PRIO_NORMAL must be 0", !PRIO_NORMAL));
…		…
1074	struct coro *coro;	1536	struct coro *coro;
1075	HV *hv;	1537	HV *hv;
1076	int i;	1538	int i;
1077		1539
1078	Newz (0, coro, 1, struct coro);	1540	Newz (0, coro, 1, struct coro);
1079	coro->args = newAV ();	1541	coro->args = newAV ();
		1542	coro->flags = CF_NEW;
1080		1543
		1544	if (coro_first) coro_first->prev = coro;
		1545	coro->next = coro_first;
		1546	coro_first = coro;
		1547
1081	hv = newHV ();	1548	coro->hv = hv = newHV ();
1082	sv_magicext ((SV )hv, 0, PERL_MAGIC_ext, &coro_state_vtbl, (char )coro, 0)->mg_flags \|= MGf_DUP;	1549	sv_magicext ((SV )hv, 0, PERL_MAGIC_ext, &coro_state_vtbl, (char )coro, 0)->mg_flags \|= MGf_DUP;
1083	RETVAL = sv_bless (newRV_noinc ((SV *)hv), gv_stashpv (klass, 1));	1550	RETVAL = sv_bless (newRV_noinc ((SV *)hv), gv_stashpv (klass, 1));
1084		1551
		1552	av_extend (coro->args, items - 1);
1085	for (i = 1; i < items; i++)	1553	for (i = 1; i < items; i++)
1086	av_push (coro->args, newSVsv (ST (i)));	1554	av_push (coro->args, newSVsv (ST (i)));
1087	}	1555	}
1088	OUTPUT:	1556	OUTPUT:
1089	RETVAL	1557	RETVAL
1090		1558
		1559	# these not obviously related functions are all rolled into the same xs
		1560	# function to increase chances that they all will call transfer with the same
		1561	# stack offset
1091	void	1562	void
1092	_set_stacklevel (...)	1563	_set_stacklevel (...)
1093	ALIAS:	1564	ALIAS:
1094	Coro::State::transfer = 1	1565	Coro::State::transfer = 1
1095	Coro::schedule = 2	1566	Coro::schedule = 2
1096	Coro::cede = 3	1567	Coro::cede = 3
1097	Coro::Cont::yield = 4	1568	Coro::cede_notself = 4
1098	CODE:	1569	CODE:
1099	{	1570	{
1100	struct transfer_args ta;	1571	struct transfer_args ta;
1101		1572
1102	switch (ix)	1573	switch (ix)
1103	{	1574	{
1104	case 0:	1575	case 0:
1105	ta.prev = (struct coro )INT2PTR (coro_cctx , SvIV (ST (0)));	1576	ta.prev = (struct coro )INT2PTR (coro_cctx , SvIV (ST (0)));
1106	ta.next = 0;	1577	ta.next = 0;
1107	ta.flags = TRANSFER_SET_STACKLEVEL;
1108	break;	1578	break;
1109		1579
1110	case 1:	1580	case 1:
1111	if (items != 3)	1581	if (items != 2)
1112	croak ("Coro::State::transfer(prev,next,flags) expects three arguments, not %d", items);	1582	croak ("Coro::State::transfer (prev,next) expects two arguments, not %d", items);
1113		1583
1114	prepare_transfer (&ta, ST (0), ST (1), SvIV (ST (2)));	1584	prepare_transfer (aTHX_ &ta, ST (0), ST (1));
1115	break;	1585	break;
1116		1586
1117	case 2:	1587	case 2:
1118	prepare_schedule (&ta);	1588	prepare_schedule (aTHX_ &ta);
1119	break;	1589	break;
1120		1590
1121	case 3:	1591	case 3:
1122	prepare_cede (&ta);	1592	prepare_cede (aTHX_ &ta);
1123	break;	1593	break;
1124		1594
1125	case 4:	1595	case 4:
1126	{	1596	if (!prepare_cede_notself (aTHX_ &ta))
1127	SV *yieldstack;	1597	XSRETURN_EMPTY;
1128	SV *sv;
1129	AV *defav = GvAV (PL_defgv);
1130		1598
1131	yieldstack = *hv_fetch (
1132	(HV *)SvRV (GvSV (coro_current)),
1133	"yieldstack", sizeof ("yieldstack") - 1,
1134	0
1135	);
1136
1137	/* set up @_ -- ugly */
1138	av_clear (defav);
1139	av_fill (defav, items - 1);
1140	while (items--)
1141	av_store (defav, items, SvREFCNT_inc (ST(items)));
1142
1143	sv = av_pop ((AV *)SvRV (yieldstack));
1144	ta.prev = SvSTATE (av_fetch ((AV )SvRV (sv), 0, 0));
1145	ta.next = SvSTATE (av_fetch ((AV )SvRV (sv), 1, 0));
1146	ta.flags = 0;
1147	SvREFCNT_dec (sv);
1148	}
1149	break;	1599	break;
1150
1151	}	1600	}
1152		1601
		1602	BARRIER;
1153	TRANSFER (ta);	1603	TRANSFER (ta);
1154	}
1155		1604
1156	void	1605	if (expect_false (GIMME_V != G_VOID && ta.next != ta.prev))
1157	_clone_state_from (SV dst, SV src)	1606	XSRETURN_YES;
		1607	}
		1608
		1609	bool
		1610	_destroy (SV *coro_sv)
1158	CODE:	1611	CODE:
1159	{	1612	RETVAL = coro_state_destroy (aTHX_ SvSTATE (coro_sv));
1160	struct coro *coro_src = SvSTATE (src);	1613	OUTPUT:
1161		1614	RETVAL
1162	sv_unmagic (SvRV (dst), PERL_MAGIC_ext);
1163
1164	++coro_src->refcnt;
1165	sv_magicext (SvRV (dst), 0, PERL_MAGIC_ext, &coro_state_vtbl, (char *)coro_src, 0)->mg_flags \|= MGf_DUP;
1166	}
1167		1615
1168	void	1616	void
1169	_exit (code)	1617	_exit (code)
1170	int code	1618	int code
1171	PROTOTYPE: $	1619	PROTOTYPE: $
1172	CODE:	1620	CODE:
1173	_exit (code);	1621	_exit (code);
1174		1622
1175	int	1623	int
		1624	cctx_stacksize (int new_stacksize = 0)
		1625	CODE:
		1626	RETVAL = coro_stacksize;
		1627	if (new_stacksize)
		1628	coro_stacksize = new_stacksize;
		1629	OUTPUT:
		1630	RETVAL
		1631
		1632	int
1176	cctx_count ()	1633	cctx_count ()
1177	CODE:	1634	CODE:
1178	RETVAL = cctx_count;	1635	RETVAL = cctx_count;
1179	OUTPUT:	1636	OUTPUT:
1180	RETVAL	1637	RETVAL
…		…
1184	CODE:	1641	CODE:
1185	RETVAL = cctx_idle;	1642	RETVAL = cctx_idle;
1186	OUTPUT:	1643	OUTPUT:
1187	RETVAL	1644	RETVAL
1188		1645
		1646	void
		1647	list ()
		1648	PPCODE:
		1649	{
		1650	struct coro *coro;
		1651	for (coro = coro_first; coro; coro = coro->next)
		1652	if (coro->hv)
		1653	XPUSHs (sv_2mortal (newRV_inc ((SV *)coro->hv)));
		1654	}
		1655
		1656	void
		1657	call (Coro::State coro, SV *coderef)
		1658	ALIAS:
		1659	eval = 1
		1660	CODE:
		1661	{
		1662	if (coro->mainstack)
		1663	{
		1664	struct coro temp;
		1665
		1666	if (!(coro->flags & CF_RUNNING))
		1667	{
		1668	save_perl (aTHX_ &temp);
		1669	load_perl (aTHX_ coro);
		1670	}
		1671
		1672	{
		1673	dSP;
		1674	ENTER;
		1675	SAVETMPS;
		1676	PUSHMARK (SP);
		1677	PUTBACK;
		1678
		1679	if (ix)
		1680	eval_sv (coderef, 0);
		1681	else
		1682	call_sv (coderef, G_KEEPERR \| G_EVAL \| G_VOID \| G_DISCARD);
		1683
		1684	SPAGAIN;
		1685	FREETMPS;
		1686	LEAVE;
		1687	PUTBACK;
		1688	}
		1689
		1690	if (!(coro->flags & CF_RUNNING))
		1691	{
		1692	save_perl (aTHX_ coro);
		1693	load_perl (aTHX_ &temp);
		1694	}
		1695	}
		1696	}
		1697
		1698	SV *
		1699	is_ready (Coro::State coro)
		1700	PROTOTYPE: $
		1701	ALIAS:
		1702	is_ready = CF_READY
		1703	is_running = CF_RUNNING
		1704	is_new = CF_NEW
		1705	is_destroyed = CF_DESTROYED
		1706	CODE:
		1707	RETVAL = boolSV (coro->flags & ix);
		1708	OUTPUT:
		1709	RETVAL
		1710
		1711	void
		1712	api_trace (SV *coro, int flags = CC_TRACE \| CC_TRACE_SUB)
		1713
		1714	SV *
		1715	has_stack (Coro::State coro)
		1716	PROTOTYPE: $
		1717	CODE:
		1718	RETVAL = boolSV (!!coro->cctx);
		1719	OUTPUT:
		1720	RETVAL
		1721
		1722	int
		1723	is_traced (Coro::State coro)
		1724	PROTOTYPE: $
		1725	CODE:
		1726	RETVAL = (coro->cctx ? coro->cctx->flags : 0) & CC_TRACE_ALL;
		1727	OUTPUT:
		1728	RETVAL
		1729
		1730	IV
		1731	rss (Coro::State coro)
		1732	PROTOTYPE: $
		1733	ALIAS:
		1734	usecount = 1
		1735	CODE:
		1736	switch (ix)
		1737	{
		1738	case 0: RETVAL = coro_rss (aTHX_ coro); break;
		1739	case 1: RETVAL = coro->usecount; break;
		1740	}
		1741	OUTPUT:
		1742	RETVAL
		1743
		1744
1189	MODULE = Coro::State PACKAGE = Coro	1745	MODULE = Coro::State PACKAGE = Coro
1190		1746
1191	BOOT:	1747	BOOT:
1192	{	1748	{
1193	int i;	1749	int i;
1194		1750
		1751	sv_pool_rss = coro_get_sv ("Coro::POOL_RSS" , TRUE);
		1752	sv_pool_size = coro_get_sv ("Coro::POOL_SIZE" , TRUE);
		1753	av_async_pool = coro_get_av ("Coro::async_pool", TRUE);
		1754
		1755	coro_current = coro_get_sv ("Coro::current", FALSE);
		1756	SvREADONLY_on (coro_current);
		1757
1195	coro_stash = gv_stashpv ("Coro", TRUE);	1758	coro_stash = gv_stashpv ("Coro", TRUE);
1196		1759
1197	newCONSTSUB (coro_stash, "PRIO_MAX", newSViv (PRIO_MAX));	1760	newCONSTSUB (coro_stash, "PRIO_MAX", newSViv (PRIO_MAX));
1198	newCONSTSUB (coro_stash, "PRIO_HIGH", newSViv (PRIO_HIGH));	1761	newCONSTSUB (coro_stash, "PRIO_HIGH", newSViv (PRIO_HIGH));
1199	newCONSTSUB (coro_stash, "PRIO_NORMAL", newSViv (PRIO_NORMAL));	1762	newCONSTSUB (coro_stash, "PRIO_NORMAL", newSViv (PRIO_NORMAL));
1200	newCONSTSUB (coro_stash, "PRIO_LOW", newSViv (PRIO_LOW));	1763	newCONSTSUB (coro_stash, "PRIO_LOW", newSViv (PRIO_LOW));
1201	newCONSTSUB (coro_stash, "PRIO_IDLE", newSViv (PRIO_IDLE));	1764	newCONSTSUB (coro_stash, "PRIO_IDLE", newSViv (PRIO_IDLE));
1202	newCONSTSUB (coro_stash, "PRIO_MIN", newSViv (PRIO_MIN));	1765	newCONSTSUB (coro_stash, "PRIO_MIN", newSViv (PRIO_MIN));
1203		1766
1204	coro_current = gv_fetchpv ("Coro::current", TRUE, SVt_PV);
1205	coro_idle = gv_fetchpv ("Coro::idle" , TRUE, SVt_PV);
1206
1207	for (i = PRIO_MAX - PRIO_MIN + 1; i--; )	1767	for (i = PRIO_MAX - PRIO_MIN + 1; i--; )
1208	coro_ready[i] = newAV ();	1768	coro_ready[i] = newAV ();
1209		1769
1210	{	1770	{
1211	SV *sv = perl_get_sv("Coro::API", 1);	1771	SV *sv = perl_get_sv ("Coro::API", TRUE);
		1772	perl_get_sv ("Coro::API", TRUE); /* silence 5.10 warning */
1212		1773
1213	coroapi.schedule = api_schedule;	1774	coroapi.schedule = api_schedule;
1214	coroapi.cede = api_cede;	1775	coroapi.cede = api_cede;
		1776	coroapi.cede_notself = api_cede_notself;
1215	coroapi.ready = api_ready;	1777	coroapi.ready = api_ready;
		1778	coroapi.is_ready = api_is_ready;
1216	coroapi.nready = &coro_nready;	1779	coroapi.nready = &coro_nready;
1217	coroapi.current = coro_current;	1780	coroapi.current = coro_current;
1218		1781
1219	GCoroAPI = &coroapi;	1782	GCoroAPI = &coroapi;
1220	sv_setiv (sv, (IV)&coroapi);	1783	sv_setiv (sv, (IV)&coroapi);
1221	SvREADONLY_on (sv);	1784	SvREADONLY_on (sv);
1222	}	1785	}
1223	}	1786	}
		1787
		1788	void
		1789	_set_current (SV *current)
		1790	PROTOTYPE: $
		1791	CODE:
		1792	SvREFCNT_dec (SvRV (coro_current));
		1793	SvRV_set (coro_current, SvREFCNT_inc (SvRV (current)));
1224		1794
1225	int	1795	int
1226	prio (Coro::State coro, int newprio = 0)	1796	prio (Coro::State coro, int newprio = 0)
1227	ALIAS:	1797	ALIAS:
1228	nice = 1	1798	nice = 1
…		…
1231	RETVAL = coro->prio;	1801	RETVAL = coro->prio;
1232		1802
1233	if (items > 1)	1803	if (items > 1)
1234	{	1804	{
1235	if (ix)	1805	if (ix)
1236	newprio += coro->prio;	1806	newprio = coro->prio - newprio;
1237		1807
1238	if (newprio < PRIO_MIN) newprio = PRIO_MIN;	1808	if (newprio < PRIO_MIN) newprio = PRIO_MIN;
1239	if (newprio > PRIO_MAX) newprio = PRIO_MAX;	1809	if (newprio > PRIO_MAX) newprio = PRIO_MAX;
1240		1810
1241	coro->prio = newprio;	1811	coro->prio = newprio;
1242	}	1812	}
1243	}	1813	}
		1814	OUTPUT:
		1815	RETVAL
1244		1816
1245	void	1817	SV *
1246	ready (SV *self)	1818	ready (SV *self)
1247	PROTOTYPE: $	1819	PROTOTYPE: $
1248	CODE:	1820	CODE:
1249	api_ready (self);	1821	RETVAL = boolSV (api_ready (self));
		1822	OUTPUT:
		1823	RETVAL
1250		1824
1251	int	1825	int
1252	nready (...)	1826	nready (...)
1253	PROTOTYPE:	1827	PROTOTYPE:
1254	CODE:	1828	CODE:
1255	RETVAL = coro_nready;	1829	RETVAL = coro_nready;
1256	OUTPUT:	1830	OUTPUT:
1257	RETVAL	1831	RETVAL
1258		1832
		1833	void
		1834	throw (Coro::State self, SV *throw = &PL_sv_undef)
		1835	PROTOTYPE: $;$
		1836	CODE:
		1837	SvREFCNT_dec (self->throw);
		1838	self->throw = SvOK (throw) ? newSVsv (throw) : 0;
		1839
		1840	# for async_pool speedup
		1841	void
		1842	_pool_1 (SV *cb)
		1843	CODE:
		1844	{
		1845	struct coro *coro = SvSTATE (coro_current);
		1846	HV hv = (HV )SvRV (coro_current);
		1847	AV *defav = GvAV (PL_defgv);
		1848	SV *invoke = hv_delete (hv, strpair ("_invoke"), 0);
		1849	AV *invoke_av;
		1850	int i, len;
		1851
		1852	if (!invoke)
		1853	croak ("\3async_pool terminate\2\n");
		1854
		1855	SvREFCNT_dec (coro->saved_deffh);
		1856	coro->saved_deffh = SvREFCNT_inc ((SV *)PL_defoutgv);
		1857
		1858	hv_store (hv, "desc", sizeof ("desc") - 1,
		1859	newSVpvn (strpair ("[async_pool]")), 0);
		1860
		1861	invoke_av = (AV *)SvRV (invoke);
		1862	len = av_len (invoke_av);
		1863
		1864	sv_setsv (cb, AvARRAY (invoke_av)[0]);
		1865
		1866	if (len > 0)
		1867	{
		1868	av_fill (defav, len - 1);
		1869	for (i = 0; i < len; ++i)
		1870	av_store (defav, i, SvREFCNT_inc (AvARRAY (invoke_av)[i + 1]));
		1871	}
		1872
		1873	SvREFCNT_dec (invoke);
		1874	}
		1875
		1876	void
		1877	_pool_2 (SV *cb)
		1878	CODE:
		1879	{
		1880	struct coro *coro = SvSTATE (coro_current);
		1881
		1882	sv_setsv (cb, &PL_sv_undef);
		1883
		1884	SvREFCNT_dec ((SV )PL_defoutgv); PL_defoutgv = (GV )coro->saved_deffh;
		1885	coro->saved_deffh = 0;
		1886
		1887	if (coro_rss (aTHX_ coro) > SvIV (sv_pool_rss)
		1888	\|\| av_len (av_async_pool) + 1 >= SvIV (sv_pool_size))
		1889	croak ("\3async_pool terminate\2\n");
		1890
		1891	av_clear (GvAV (PL_defgv));
		1892	hv_store ((HV *)SvRV (coro_current), strpair ("desc"),
		1893	newSVpvn (strpair ("[async_pool idle]")), 0);
		1894
		1895	coro->prio = 0;
		1896
		1897	if (coro->cctx && (coro->cctx->flags & CC_TRACE))
		1898	api_trace (coro_current, 0);
		1899
		1900	av_push (av_async_pool, newSVsv (coro_current));
		1901	}
		1902
		1903
1259	MODULE = Coro::State PACKAGE = Coro::AIO	1904	MODULE = Coro::State PACKAGE = Coro::AIO
1260		1905
1261	SV *	1906	SV *
1262	_get_state ()	1907	_get_state ()
1263	CODE:	1908	CODE:
1264	{	1909	{
1265	struct {	1910	struct io_state *data;
1266	int errorno;
1267	int laststype;
1268	int laststatval;
1269	Stat_t statcache;
1270	} data;
1271		1911
		1912	RETVAL = newSV (sizeof (struct io_state));
		1913	data = (struct io_state *)SvPVX (RETVAL);
		1914	SvCUR_set (RETVAL, sizeof (struct io_state));
		1915	SvPOK_only (RETVAL);
		1916
1272	data.errorno = errno;	1917	data->errorno = errno;
1273	data.laststype = PL_laststype;	1918	data->laststype = PL_laststype;
1274	data.laststatval = PL_laststatval;	1919	data->laststatval = PL_laststatval;
1275	data.statcache = PL_statcache;	1920	data->statcache = PL_statcache;
1276
1277	RETVAL = newSVpvn ((char *)&data, sizeof data);
1278	}	1921	}
1279	OUTPUT:	1922	OUTPUT:
1280	RETVAL	1923	RETVAL
1281		1924
1282	void	1925	void
1283	_set_state (char *data_)	1926	_set_state (char *data_)
1284	PROTOTYPE: $	1927	PROTOTYPE: $
1285	CODE:	1928	CODE:
1286	{	1929	{
1287	struct {	1930	struct io_state data = (void )data_;
1288	int errorno;
1289	int laststype;
1290	int laststatval;
1291	Stat_t statcache;
1292	} data = (void )data_;
1293		1931
1294	errno = data->errorno;	1932	errno = data->errorno;
1295	PL_laststype = data->laststype;	1933	PL_laststype = data->laststype;
1296	PL_laststatval = data->laststatval;	1934	PL_laststatval = data->laststatval;
1297	PL_statcache = data->statcache;	1935	PL_statcache = data->statcache;
1298	}	1936	}
		1937

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Comparing Coro/Coro/State.xs (file contents): Revision 1.107 by root, Mon Nov 27 02:15:51 2006 UTC vs. Revision 1.200 by root, Sun Oct 7 15:08:23 2007 UTC

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Comparing Coro/Coro/State.xs (file contents):
Revision 1.107 by root, Mon Nov 27 02:15:51 2006 UTC vs.
Revision 1.200 by root, Sun Oct 7 15:08:23 2007 UTC