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

Comparing Coro/Coro/State.xs (file contents):
Revision 1.106 by root, Mon Nov 27 02:08:55 2006 UTC vs.
Revision 1.203 by root, Mon Oct 8 03:02:00 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 */
		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
		165	static struct coro_cctx *cctx_first;
		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	};
107		176
108	/* this is a structure representing a c-level coroutine */	177	/* this is a structure representing a c-level coroutine */
109	typedef struct coro_cctx {	178	typedef struct coro_cctx {
110	struct coro_cctx *next;	179	struct coro_cctx *next;
111		180
112	/* the stack */	181	/* the stack */
113	void *sptr;	182	void *sptr;
114	long ssize; /* positive == mmap, otherwise malloc */	183	size_t ssize;
115		184
116	/* cpu state */	185	/* cpu state */
117	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 */
118	JMPENV *top_env;	188	JMPENV *top_env;
119	coro_context cctx;	189	coro_context cctx;
120		190
121	#if USE_VALGRIND	191	#if CORO_USE_VALGRIND
122	int valgrind_id;	192	int valgrind_id;
123	#endif	193	#endif
		194	unsigned char flags;
124	} 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))
125		216
126	/* this is a structure representing a perl-level coroutine */	217	/* this is a structure representing a perl-level coroutine */
127	struct coro {	218	struct coro {
128	/* the c coroutine allocated to this perl coroutine, if any */	219	/* the c coroutine allocated to this perl coroutine, if any */
129	coro_cctx *cctx;	220	coro_cctx *cctx;
130		221
131	/* data associated with this coroutine (initial args) */	222	/* process data */
132	AV *args;
133	int refcnt;
134
135	/* optionally saved, might be zero */
136	AV *defav;
137	SV *defsv;
138	SV *errsv;
139
140	/* saved global state not related to stacks */
141	U8 dowarn;
142	I32 in_eval;
143
144	/* the stacks and related info (callchain etc..) */
145	PERL_SI *curstackinfo;
146	AV *curstack;
147	AV *mainstack;	223	AV *mainstack;
148	SV **stack_sp;	224	perl_slots slot; / basically the saved sp */
149	OP *op;	225
150	SV **curpad;	226	AV args; / data associated with this coroutine (initial args) */
151	AV *comppad;	227	int refcnt; /* coroutines are refcounted, yes */
152	CV *compcv;	228	int flags; /* CF_ flags */
153	SV **stack_base;	229	HV hv; / the perl hash associated with this coro, if any */
154	SV **stack_max;	230
155	SV **tmps_stack;	231	/* statistics */
156	I32 tmps_floor;	232	int usecount; /* number of transfers to this coro */
157	I32 tmps_ix;
158	I32 tmps_max;
159	I32 *markstack;
160	I32 *markstack_ptr;
161	I32 *markstack_max;
162	I32 *scopestack;
163	I32 scopestack_ix;
164	I32 scopestack_max;
165	ANY *savestack;
166	I32 savestack_ix;
167	I32 savestack_max;
168	OP **retstack;
169	I32 retstack_ix;
170	I32 retstack_max;
171	PMOP *curpm;
172	COP *curcop;
173		233
174	/* coro process data */	234	/* coro process data */
175	int prio;	235	int prio;
		236	SV throw; / exception to be thrown */
		237
		238	/* async_pool */
		239	SV *saved_deffh;
		240
		241	/* linked list */
		242	struct coro next, prev;
176	};	243	};
177		244
178	typedef struct coro *Coro__State;	245	typedef struct coro *Coro__State;
179	typedef struct coro *Coro__State_or_hashref;	246	typedef struct coro *Coro__State_or_hashref;
180		247
		248	/ Coro ******************************************************************/
		249
		250	#define PRIO_MAX 3
		251	#define PRIO_HIGH 1
		252	#define PRIO_NORMAL 0
		253	#define PRIO_LOW -1
		254	#define PRIO_IDLE -3
		255	#define PRIO_MIN -4
		256
		257	/* for Coro.pm */
		258	static SV *coro_current;
		259	static AV *coro_ready [PRIO_MAX-PRIO_MIN+1];
		260	static int coro_nready;
		261	static struct coro *coro_first;
		262
		263	/ lowlevel stuff ********************************************************/
		264
		265	static SV *
		266	coro_get_sv (const char *name, int create)
		267	{
		268	#if PERL_VERSION_ATLEAST (5,9,0)
		269	/* silence stupid and wrong 5.10 warning that I am unable to switch off */
		270	get_sv (name, create);
		271	#endif
		272	return get_sv (name, create);
		273	}
		274
181	static AV *	275	static AV *
		276	coro_get_av (const char *name, int create)
		277	{
		278	#if PERL_VERSION_ATLEAST (5,9,0)
		279	/* silence stupid and wrong 5.10 warning that I am unable to switch off */
		280	get_av (name, create);
		281	#endif
		282	return get_av (name, create);
		283	}
		284
		285	static HV *
		286	coro_get_hv (const char *name, int create)
		287	{
		288	#if PERL_VERSION_ATLEAST (5,9,0)
		289	/* silence stupid and wrong 5.10 warning that I am unable to switch off */
		290	get_hv (name, create);
		291	#endif
		292	return get_hv (name, create);
		293	}
		294
		295	static AV *
182	coro_clone_padlist (CV *cv)	296	coro_clone_padlist (pTHX_ CV *cv)
183	{	297	{
184	AV *padlist = CvPADLIST (cv);	298	AV *padlist = CvPADLIST (cv);
185	AV newpadlist, newpad;	299	AV newpadlist, newpad;
186		300
187	newpadlist = newAV ();	301	newpadlist = newAV ();
…		…
199		313
200	return newpadlist;	314	return newpadlist;
201	}	315	}
202		316
203	static void	317	static void
204	free_padlist (AV *padlist)	318	free_padlist (pTHX_ AV *padlist)
205	{	319	{
206	/* may be during global destruction */	320	/* may be during global destruction */
207	if (SvREFCNT (padlist))	321	if (SvREFCNT (padlist))
208	{	322	{
209	I32 i = AvFILLp (padlist);	323	I32 i = AvFILLp (padlist);
…		…
230	AV *padlist;	344	AV *padlist;
231	AV av = (AV )mg->mg_obj;	345	AV av = (AV )mg->mg_obj;
232		346
233	/* casting is fun. */	347	/* casting is fun. */
234	while (&PL_sv_undef != (SV )(padlist = (AV )av_pop (av)))	348	while (&PL_sv_undef != (SV )(padlist = (AV )av_pop (av)))
235	free_padlist (padlist);	349	free_padlist (aTHX_ padlist);
236		350
237	SvREFCNT_dec (av);	351	SvREFCNT_dec (av);
238		352
239	return 0;	353	return 0;
240	}	354	}
241		355
242	#define PERL_MAGIC_coro PERL_MAGIC_ext	356	#define PERL_MAGIC_coro PERL_MAGIC_ext
243		357
244	static MGVTBL vtbl_coro = {0, 0, 0, 0, coro_cv_free};	358	static MGVTBL vtbl_coro = {0, 0, 0, 0, coro_cv_free};
245		359
		360	#define CORO_MAGIC(cv) \
		361	SvMAGIC (cv) \
		362	? SvMAGIC (cv)->mg_type == PERL_MAGIC_coro \
		363	? SvMAGIC (cv) \
		364	: mg_find ((SV *)cv, PERL_MAGIC_coro) \
		365	: 0
		366
		367	static struct coro *
		368	SvSTATE_ (pTHX_ SV *coro)
		369	{
		370	HV *stash;
		371	MAGIC *mg;
		372
		373	if (SvROK (coro))
		374	coro = SvRV (coro);
		375
		376	if (expect_false (SvTYPE (coro) != SVt_PVHV))
		377	croak ("Coro::State object required");
		378
		379	stash = SvSTASH (coro);
		380	if (expect_false (stash != coro_stash && stash != coro_state_stash))
		381	{
		382	/* very slow, but rare, check */
		383	if (!sv_derived_from (sv_2mortal (newRV_inc (coro)), "Coro::State"))
		384	croak ("Coro::State object required");
		385	}
		386
		387	mg = CORO_MAGIC (coro);
		388	return (struct coro *)mg->mg_ptr;
		389	}
		390
		391	#define SvSTATE(sv) SvSTATE_ (aTHX_ (sv))
		392
246	/* the next two functions merely cache the padlists */	393	/* the next two functions merely cache the padlists */
247	static void	394	static void
248	get_padlist (CV *cv)	395	get_padlist (pTHX_ CV *cv)
249	{	396	{
250	MAGIC mg = mg_find ((SV )cv, PERL_MAGIC_coro);	397	MAGIC *mg = CORO_MAGIC (cv);
		398	AV *av;
251		399
252	if (mg && AvFILLp ((AV *)mg->mg_obj) >= 0)	400	if (expect_true (mg && AvFILLp ((av = (AV *)mg->mg_obj)) >= 0))
253	CvPADLIST (cv) = (AV )av_pop ((AV )mg->mg_obj);	401	CvPADLIST (cv) = (AV *)AvARRAY (av)[AvFILLp (av)--];
254	else	402	else
255	{	403	{
256	#if 0	404	#if CORO_PREFER_PERL_FUNCTIONS
257	/* this is probably cleaner, but also slower? */	405	/* this is probably cleaner, but also slower? */
258	CV *cp = Perl_cv_clone (cv);	406	CV *cp = Perl_cv_clone (cv);
259	CvPADLIST (cv) = CvPADLIST (cp);	407	CvPADLIST (cv) = CvPADLIST (cp);
260	CvPADLIST (cp) = 0;	408	CvPADLIST (cp) = 0;
261	SvREFCNT_dec (cp);	409	SvREFCNT_dec (cp);
262	#else	410	#else
263	CvPADLIST (cv) = coro_clone_padlist (cv);	411	CvPADLIST (cv) = coro_clone_padlist (aTHX_ cv);
264	#endif	412	#endif
265	}	413	}
266	}	414	}
267		415
268	static void	416	static void
269	put_padlist (CV *cv)	417	put_padlist (pTHX_ CV *cv)
270	{	418	{
271	MAGIC mg = mg_find ((SV )cv, PERL_MAGIC_coro);	419	MAGIC *mg = CORO_MAGIC (cv);
		420	AV *av;
272		421
273	if (!mg)	422	if (expect_false (!mg))
274	{	423	{
275	sv_magic ((SV *)cv, 0, PERL_MAGIC_coro, 0, 0);	424	sv_magic ((SV *)cv, 0, PERL_MAGIC_coro, 0, 0);
276	mg = mg_find ((SV *)cv, PERL_MAGIC_coro);	425	mg = mg_find ((SV *)cv, PERL_MAGIC_coro);
277	mg->mg_virtual = &vtbl_coro;	426	mg->mg_virtual = &vtbl_coro;
278	mg->mg_obj = (SV *)newAV ();	427	mg->mg_obj = (SV *)newAV ();
279	}	428	}
280		429
281	av_push ((AV )mg->mg_obj, (SV )CvPADLIST (cv));	430	av = (AV *)mg->mg_obj;
282	}
283		431
284	#define SB do {	432	if (expect_false (AvFILLp (av) >= AvMAX (av)))
285	#define SE } while (0)	433	av_extend (av, AvMAX (av) + 1);
286		434
287	#define LOAD(state) load_state((state));	435	AvARRAY (av)[++AvFILLp (av)] = (SV *)CvPADLIST (cv);
288	#define SAVE(state,flags) save_state((state),(flags));	436	}
289		437
290	#define REPLACE_SV(sv,val) SB SvREFCNT_dec(sv); (sv) = (val); (val) = 0; SE	438	/ load & save, init *****************************************************/
291		439
292	static void	440	static void
293	load_state(Coro__State c)	441	load_perl (pTHX_ Coro__State c)
294	{	442	{
295	PL_dowarn = c->dowarn;	443	perl_slots *slot = c->slot;
296	PL_in_eval = c->in_eval;	444	c->slot = 0;
297		445
298	PL_curstackinfo = c->curstackinfo;
299	PL_curstack = c->curstack;
300	PL_mainstack = c->mainstack;	446	PL_mainstack = c->mainstack;
301	PL_stack_sp = c->stack_sp;
302	PL_op = c->op;
303	PL_curpad = c->curpad;
304	PL_comppad = c->comppad;
305	PL_compcv = c->compcv;
306	PL_stack_base = c->stack_base;
307	PL_stack_max = c->stack_max;
308	PL_tmps_stack = c->tmps_stack;
309	PL_tmps_floor = c->tmps_floor;
310	PL_tmps_ix = c->tmps_ix;
311	PL_tmps_max = c->tmps_max;
312	PL_markstack = c->markstack;
313	PL_markstack_ptr = c->markstack_ptr;
314	PL_markstack_max = c->markstack_max;
315	PL_scopestack = c->scopestack;
316	PL_scopestack_ix = c->scopestack_ix;
317	PL_scopestack_max = c->scopestack_max;
318	PL_savestack = c->savestack;
319	PL_savestack_ix = c->savestack_ix;
320	PL_savestack_max = c->savestack_max;
321	#if !PERL_VERSION_ATLEAST (5,9,0)
322	PL_retstack = c->retstack;
323	PL_retstack_ix = c->retstack_ix;
324	PL_retstack_max = c->retstack_max;
325	#endif
326	PL_curpm = c->curpm;
327	PL_curcop = c->curcop;
328		447
329	if (c->defav) REPLACE_SV (GvAV (PL_defgv), c->defav);	448	GvSV (PL_defgv) = slot->defsv;
330	if (c->defsv) REPLACE_SV (DEFSV , c->defsv);	449	GvAV (PL_defgv) = slot->defav;
331	if (c->errsv) REPLACE_SV (ERRSV , c->errsv);	450	GvSV (PL_errgv) = slot->errsv;
		451	GvSV (irsgv) = slot->irsgv;
		452
		453	#define VAR(name,type) PL_ ## name = slot->name;
		454	# include "state.h"
		455	#undef VAR
		456
		457	/hv_store (hv_sig, strpair ("__DIE__" ), SvREFCNT_inc (sv_diehook ), 0);/
		458	/hv_store (hv_sig, strpair ("__WARN__"), SvREFCNT_inc (sv_warnhook), 0);/
332		459
333	{	460	{
334	dSP;	461	dSP;
		462
335	CV *cv;	463	CV *cv;
336		464
337	/* now do the ugly restore mess */	465	/* now do the ugly restore mess */
338	while ((cv = (CV *)POPs))	466	while (expect_true (cv = (CV *)POPs))
339	{	467	{
340	AV padlist = (AV )POPs;
341
342	if (padlist)
343	{
344	put_padlist (cv); /* mark this padlist as available */	468	put_padlist (aTHX_ cv); /* mark this padlist as available */
345	CvPADLIST(cv) = padlist;	469	CvDEPTH (cv) = PTR2IV (POPs);
346	}	470	CvPADLIST (cv) = (AV *)POPs;
347
348	++CvDEPTH(cv);
349	}	471	}
350		472
351	PUTBACK;	473	PUTBACK;
352	}	474	}
353	}	475	}
354		476
355	static void	477	static void
356	save_state(Coro__State c, int flags)	478	save_perl (pTHX_ Coro__State c)
357	{	479	{
358	{	480	{
359	dSP;	481	dSP;
360	I32 cxix = cxstack_ix;	482	I32 cxix = cxstack_ix;
361	PERL_CONTEXT *ccstk = cxstack;	483	PERL_CONTEXT *ccstk = cxstack;
…		…
364	/*	486	/*
365	* the worst thing you can imagine happens first - we have to save	487	* the worst thing you can imagine happens first - we have to save
366	* (and reinitialize) all cv's in the whole callchain :(	488	* (and reinitialize) all cv's in the whole callchain :(
367	*/	489	*/
368		490
369	PUSHs (Nullsv);	491	XPUSHs (Nullsv);
370	/* this loop was inspired by pp_caller */	492	/* this loop was inspired by pp_caller */
371	for (;;)	493	for (;;)
372	{	494	{
373	while (cxix >= 0)	495	while (expect_true (cxix >= 0))
374	{	496	{
375	PERL_CONTEXT *cx = &ccstk[cxix--];	497	PERL_CONTEXT *cx = &ccstk[cxix--];
376		498
377	if (CxTYPE(cx) == CXt_SUB)	499	if (expect_true (CxTYPE (cx) == CXt_SUB \|\| CxTYPE (cx) == CXt_FORMAT))
378	{	500	{
379	CV *cv = cx->blk_sub.cv;	501	CV *cv = cx->blk_sub.cv;
		502
380	if (CvDEPTH(cv))	503	if (expect_true (CvDEPTH (cv)))
381	{	504	{
382	EXTEND (SP, CvDEPTH(cv)*2);	505	EXTEND (SP, 3);
383
384	while (--CvDEPTH(cv))
385	{
386	/* this tells the restore code to increment CvDEPTH */
387	PUSHs (Nullsv);
388	PUSHs ((SV *)cv);
389	}
390
391	PUSHs ((SV *)CvPADLIST(cv));	506	PUSHs ((SV *)CvPADLIST (cv));
		507	PUSHs (INT2PTR (SV *, CvDEPTH (cv)));
392	PUSHs ((SV *)cv);	508	PUSHs ((SV *)cv);
393		509
		510	CvDEPTH (cv) = 0;
394	get_padlist (cv);	511	get_padlist (aTHX_ cv);
395	}	512	}
396	}	513	}
397	#ifdef CXt_FORMAT
398	else if (CxTYPE(cx) == CXt_FORMAT)
399	{
400	/* I never used formats, so how should I know how these are implemented? */
401	/* my bold guess is as a simple, plain sub... */
402	croak ("CXt_FORMAT not yet handled. Don't switch coroutines from within formats");
403	}
404	#endif
405	}	514	}
406		515
407	if (top_si->si_type == PERLSI_MAIN)	516	if (expect_true (top_si->si_type == PERLSI_MAIN))
408	break;	517	break;
409		518
410	top_si = top_si->si_prev;	519	top_si = top_si->si_prev;
411	ccstk = top_si->si_cxstack;	520	ccstk = top_si->si_cxstack;
412	cxix = top_si->si_cxix;	521	cxix = top_si->si_cxix;
413	}	522	}
414		523
415	PUTBACK;	524	PUTBACK;
416	}	525	}
417		526
418	c->defav = flags & TRANSFER_SAVE_DEFAV ? (AV *)SvREFCNT_inc (GvAV (PL_defgv)) : 0;	527	/* allocate some space on the context stack for our purposes */
419	c->defsv = flags & TRANSFER_SAVE_DEFSV ? SvREFCNT_inc (DEFSV) : 0;	528	/* we manually unroll here, as usually 2 slots is enough */
420	c->errsv = flags & TRANSFER_SAVE_ERRSV ? SvREFCNT_inc (ERRSV) : 0;	529	if (SLOT_COUNT >= 1) CXINC;
		530	if (SLOT_COUNT >= 2) CXINC;
		531	if (SLOT_COUNT >= 3) CXINC;
		532	{
		533	int i;
		534	for (i = 3; i < SLOT_COUNT; ++i)
		535	CXINC;
		536	}
		537	cxstack_ix -= SLOT_COUNT; /* undo allocation */
421		538
422	c->dowarn = PL_dowarn;
423	c->in_eval = PL_in_eval;
424
425	c->curstackinfo = PL_curstackinfo;
426	c->curstack = PL_curstack;
427	c->mainstack = PL_mainstack;	539	c->mainstack = PL_mainstack;
428	c->stack_sp = PL_stack_sp;	540
429	c->op = PL_op;	541	{
430	c->curpad = PL_curpad;	542	perl_slots slot = c->slot = (perl_slots )(cxstack + cxstack_ix + 1);
431	c->comppad = PL_comppad;	543
432	c->compcv = PL_compcv;	544	slot->defav = GvAV (PL_defgv);
433	c->stack_base = PL_stack_base;	545	slot->defsv = DEFSV;
434	c->stack_max = PL_stack_max;	546	slot->errsv = ERRSV;
435	c->tmps_stack = PL_tmps_stack;	547	slot->irsgv = GvSV (irsgv);
436	c->tmps_floor = PL_tmps_floor;	548
437	c->tmps_ix = PL_tmps_ix;	549	#define VAR(name,type) slot->name = PL_ ## name;
438	c->tmps_max = PL_tmps_max;	550	# include "state.h"
439	c->markstack = PL_markstack;	551	#undef VAR
440	c->markstack_ptr = PL_markstack_ptr;	552	}
441	c->markstack_max = PL_markstack_max;
442	c->scopestack = PL_scopestack;
443	c->scopestack_ix = PL_scopestack_ix;
444	c->scopestack_max = PL_scopestack_max;
445	c->savestack = PL_savestack;
446	c->savestack_ix = PL_savestack_ix;
447	c->savestack_max = PL_savestack_max;
448	#if !PERL_VERSION_ATLEAST (5,9,0)
449	c->retstack = PL_retstack;
450	c->retstack_ix = PL_retstack_ix;
451	c->retstack_max = PL_retstack_max;
452	#endif
453	c->curpm = PL_curpm;
454	c->curcop = PL_curcop;
455	}	553	}
456		554
457	/*	555	/*
458	* allocate various perl stacks. This is an exact copy	556	* allocate various perl stacks. This is an exact copy
459	* of perl.c:init_stacks, except that it uses less memory	557	* of perl.c:init_stacks, except that it uses less memory
460	* on the (sometimes correct) assumption that coroutines do	558	* on the (sometimes correct) assumption that coroutines do
461	* not usually need a lot of stackspace.	559	* not usually need a lot of stackspace.
462	*/	560	*/
		561	#if 1
		562	# define coro_init_stacks init_stacks
		563	#else
463	static void	564	static void
464	coro_init_stacks ()	565	coro_init_stacks (pTHX)
465	{	566	{
466	PL_curstackinfo = new_stackinfo(96, 1024/sizeof(PERL_CONTEXT) - 1);	567	PL_curstackinfo = new_stackinfo(32, 8);
467	PL_curstackinfo->si_type = PERLSI_MAIN;	568	PL_curstackinfo->si_type = PERLSI_MAIN;
468	PL_curstack = PL_curstackinfo->si_stack;	569	PL_curstack = PL_curstackinfo->si_stack;
469	PL_mainstack = PL_curstack; /* remember in case we switch stacks */	570	PL_mainstack = PL_curstack; /* remember in case we switch stacks */
470		571
471	PL_stack_base = AvARRAY(PL_curstack);	572	PL_stack_base = AvARRAY(PL_curstack);
472	PL_stack_sp = PL_stack_base;	573	PL_stack_sp = PL_stack_base;
473	PL_stack_max = PL_stack_base + AvMAX(PL_curstack);	574	PL_stack_max = PL_stack_base + AvMAX(PL_curstack);
474		575
475	New(50,PL_tmps_stack,96,SV*);	576	New(50,PL_tmps_stack,32,SV*);
476	PL_tmps_floor = -1;	577	PL_tmps_floor = -1;
477	PL_tmps_ix = -1;	578	PL_tmps_ix = -1;
478	PL_tmps_max = 96;	579	PL_tmps_max = 32;
479		580
480	New(54,PL_markstack,16,I32);	581	New(54,PL_markstack,16,I32);
481	PL_markstack_ptr = PL_markstack;	582	PL_markstack_ptr = PL_markstack;
482	PL_markstack_max = PL_markstack + 16;	583	PL_markstack_max = PL_markstack + 16;
483		584
484	#ifdef SET_MARK_OFFSET	585	#ifdef SET_MARK_OFFSET
485	SET_MARK_OFFSET;	586	SET_MARK_OFFSET;
486	#endif	587	#endif
487		588
488	New(54,PL_scopestack,16,I32);	589	New(54,PL_scopestack,8,I32);
489	PL_scopestack_ix = 0;	590	PL_scopestack_ix = 0;
490	PL_scopestack_max = 16;	591	PL_scopestack_max = 8;
491		592
492	New(54,PL_savestack,96,ANY);	593	New(54,PL_savestack,24,ANY);
493	PL_savestack_ix = 0;	594	PL_savestack_ix = 0;
494	PL_savestack_max = 96;	595	PL_savestack_max = 24;
495		596
496	#if !PERL_VERSION_ATLEAST (5,9,0)	597	#if !PERL_VERSION_ATLEAST (5,9,0)
497	New(54,PL_retstack,8,OP*);	598	New(54,PL_retstack,4,OP*);
498	PL_retstack_ix = 0;	599	PL_retstack_ix = 0;
499	PL_retstack_max = 8;	600	PL_retstack_max = 4;
500	#endif	601	#endif
501	}	602	}
		603	#endif
502		604
503	/*	605	/*
504	* destroy the stacks, the callchain etc...	606	* destroy the stacks, the callchain etc...
505	*/	607	*/
506	static void	608	static void
507	coro_destroy_stacks ()	609	coro_destroy_stacks (pTHX)
508	{	610	{
509	if (!IN_DESTRUCT)
510	{
511	/* is this ugly, I ask? */
512	LEAVE_SCOPE (0);
513
514	/* sure it is, but more important: is it correct?? :/ */
515	FREETMPS;
516
517	/POPSTACK_TO (PL_mainstack);//D//use/
518	}
519
520	while (PL_curstackinfo->si_next)	611	while (PL_curstackinfo->si_next)
521	PL_curstackinfo = PL_curstackinfo->si_next;	612	PL_curstackinfo = PL_curstackinfo->si_next;
522		613
523	while (PL_curstackinfo)	614	while (PL_curstackinfo)
524	{	615	{
525	PERL_SI *p = PL_curstackinfo->si_prev;	616	PERL_SI *p = PL_curstackinfo->si_prev;
526		617
527	{ /D//remove/
528	dSP;
529	SWITCHSTACK (PL_curstack, PL_curstackinfo->si_stack);
530	PUTBACK; /* possibly superfluous */
531	}
532
533	if (!IN_DESTRUCT)	618	if (!IN_DESTRUCT)
534	{
535	dounwind (-1);/D//remove/
536	SvREFCNT_dec (PL_curstackinfo->si_stack);	619	SvREFCNT_dec (PL_curstackinfo->si_stack);
537	}
538		620
539	Safefree (PL_curstackinfo->si_cxstack);	621	Safefree (PL_curstackinfo->si_cxstack);
540	Safefree (PL_curstackinfo);	622	Safefree (PL_curstackinfo);
541	PL_curstackinfo = p;	623	PL_curstackinfo = p;
542	}	624	}
…		…
548	#if !PERL_VERSION_ATLEAST (5,9,0)	630	#if !PERL_VERSION_ATLEAST (5,9,0)
549	Safefree (PL_retstack);	631	Safefree (PL_retstack);
550	#endif	632	#endif
551	}	633	}
552		634
553	static void	635	static size_t
554	setup_coro (struct coro *coro)	636	coro_rss (pTHX_ struct coro *coro)
		637	{
		638	size_t rss = sizeof (*coro);
		639
		640	if (coro->mainstack)
		641	{
		642	perl_slots tmp_slot;
		643	perl_slots *slot;
		644
		645	if (coro->flags & CF_RUNNING)
		646	{
		647	slot = &tmp_slot;
		648
		649	#define VAR(name,type) slot->name = PL_ ## name;
		650	# include "state.h"
		651	#undef VAR
		652	}
		653	else
		654	slot = coro->slot;
		655
		656	rss += sizeof (slot->curstackinfo);
		657	rss += (slot->curstackinfo->si_cxmax + 1) * sizeof (PERL_CONTEXT);
		658	rss += sizeof (SV) + sizeof (struct xpvav) + (1 + AvMAX (slot->curstack)) * sizeof (SV *);
		659	rss += slot->tmps_max * sizeof (SV *);
		660	rss += (slot->markstack_max - slot->markstack_ptr) * sizeof (I32);
		661	rss += slot->scopestack_max * sizeof (I32);
		662	rss += slot->savestack_max * sizeof (ANY);
		663
		664	#if !PERL_VERSION_ATLEAST (5,9,0)
		665	rss += slot->retstack_max * sizeof (OP *);
		666	#endif
		667	}
		668
		669	return rss;
		670	}
		671
		672	/ coroutine stack handling **********************************************/
		673
		674	static void
		675	coro_setup (pTHX_ struct coro *coro)
555	{	676	{
556	/*	677	/*
557	* emulate part of the perl startup here.	678	* emulate part of the perl startup here.
558	*/	679	*/
559
560	coro_init_stacks ();	680	coro_init_stacks (aTHX);
561		681
		682	PL_runops = RUNOPS_DEFAULT;
		683	PL_curcop = &PL_compiling;
		684	PL_in_eval = EVAL_NULL;
562	PL_curcop = 0;	685	PL_comppad = 0;
563	PL_in_eval = 0;
564	PL_curpm = 0;	686	PL_curpm = 0;
		687	PL_curpad = 0;
		688	PL_localizing = 0;
		689	PL_dirty = 0;
		690	PL_restartop = 0;
		691	PL_diehook = 0; hv_store (hv_sig, strpair ("__DIE__" ), SvREFCNT_inc (sv_diehook ), 0);
		692	PL_warnhook = 0; hv_store (hv_sig, strpair ("__WARN__"), SvREFCNT_inc (sv_warnhook), 0);
		693
		694	GvSV (PL_defgv) = newSV (0);
		695	GvAV (PL_defgv) = coro->args; coro->args = 0;
		696	GvSV (PL_errgv) = newSV (0);
		697	GvSV (irsgv) = newSVpvn ("\n", 1); sv_magic (GvSV (irsgv), (SV *)irsgv, PERL_MAGIC_sv, "/", 0);
		698	PL_rs = newSVsv (GvSV (irsgv));
		699	PL_defoutgv = (GV *)SvREFCNT_inc (stdoutgv);
565		700
566	{	701	{
567	dSP;	702	dSP;
568	LOGOP myop;	703	LOGOP myop;
569		704
570	/* I have no idea why this is needed, but it is */
571	PUSHMARK (SP);
572
573	SvREFCNT_dec (GvAV (PL_defgv));
574	GvAV (PL_defgv) = coro->args; coro->args = 0;
575
576	Zero (&myop, 1, LOGOP);	705	Zero (&myop, 1, LOGOP);
577	myop.op_next = Nullop;	706	myop.op_next = Nullop;
578	myop.op_flags = OPf_WANT_VOID;	707	myop.op_flags = OPf_WANT_VOID;
579		708
		709	PUSHMARK (SP);
		710	XPUSHs (sv_2mortal (av_shift (GvAV (PL_defgv))));
		711	PUTBACK;
580	PL_op = (OP *)&myop;	712	PL_op = (OP *)&myop;
581
582	PUSHMARK (SP);
583	XPUSHs ((SV *)get_cv ("Coro::State::coro_init", FALSE));
584	PUTBACK;
585	PL_op = PL_ppaddr[OP_ENTERSUB](aTHX);	713	PL_op = PL_ppaddr[OP_ENTERSUB](aTHX);
586	SPAGAIN;	714	SPAGAIN;
587
588	ENTER; /* necessary e.g. for dounwind */
589	}	715	}
590	}
591		716
		717	ENTER; /* necessary e.g. for dounwind and to balance the xsub-entersub */
		718	}
		719
592	static void	720	static void
		721	coro_destroy (pTHX_ struct coro *coro)
		722	{
		723	if (!IN_DESTRUCT)
		724	{
		725	/* restore all saved variables and stuff */
		726	LEAVE_SCOPE (0);
		727	assert (PL_tmps_floor == -1);
		728
		729	/* free all temporaries */
		730	FREETMPS;
		731	assert (PL_tmps_ix == -1);
		732
		733	/* unwind all extra stacks */
		734	POPSTACK_TO (PL_mainstack);
		735
		736	/* unwind main stack */
		737	dounwind (-1);
		738	}
		739
		740	SvREFCNT_dec (GvSV (PL_defgv));
		741	SvREFCNT_dec (GvAV (PL_defgv));
		742	SvREFCNT_dec (GvSV (PL_errgv));
		743	SvREFCNT_dec (PL_defoutgv);
		744	SvREFCNT_dec (PL_rs);
		745	SvREFCNT_dec (GvSV (irsgv));
		746
		747	SvREFCNT_dec (PL_diehook);
		748	SvREFCNT_dec (PL_warnhook);
		749
		750	SvREFCNT_dec (coro->saved_deffh);
		751	SvREFCNT_dec (coro->throw);
		752
		753	coro_destroy_stacks (aTHX);
		754	}
		755
		756	static void
593	free_coro_mortal ()	757	free_coro_mortal (pTHX)
594	{	758	{
595	if (coro_mortal)	759	if (expect_true (coro_mortal))
596	{	760	{
597	SvREFCNT_dec (coro_mortal);	761	SvREFCNT_dec (coro_mortal);
598	coro_mortal = 0;	762	coro_mortal = 0;
599	}	763	}
600	}	764	}
601		765
		766	static int
		767	runops_trace (pTHX)
		768	{
		769	COP *oldcop = 0;
		770	int oldcxix = -2;
		771	struct coro coro = SvSTATE (coro_current); / trace cctx is tied to specific coro */
		772	coro_cctx *cctx = coro->cctx;
		773
		774	while ((PL_op = CALL_FPTR (PL_op->op_ppaddr) (aTHX)))
		775	{
		776	PERL_ASYNC_CHECK ();
		777
		778	if (cctx->flags & CC_TRACE_ALL)
		779	{
		780	if (PL_op->op_type == OP_LEAVESUB && cctx->flags & CC_TRACE_SUB)
		781	{
		782	PERL_CONTEXT *cx = &cxstack[cxstack_ix];
		783	SV bot, top;
		784	AV av = newAV (); / return values */
		785	SV **cb;
		786	dSP;
		787
		788	GV *gv = CvGV (cx->blk_sub.cv);
		789	SV *fullname = sv_2mortal (newSV (0));
		790	if (isGV (gv))
		791	gv_efullname3 (fullname, gv, 0);
		792
		793	bot = PL_stack_base + cx->blk_oldsp + 1;
		794	top = cx->blk_gimme == G_ARRAY ? SP + 1
		795	: cx->blk_gimme == G_SCALAR ? bot + 1
		796	: bot;
		797
		798	av_extend (av, top - bot);
		799	while (bot < top)
		800	av_push (av, SvREFCNT_inc (*bot++));
		801
		802	PL_runops = RUNOPS_DEFAULT;
		803	ENTER;
		804	SAVETMPS;
		805	EXTEND (SP, 3);
		806	PUSHMARK (SP);
		807	PUSHs (&PL_sv_no);
		808	PUSHs (fullname);
		809	PUSHs (sv_2mortal (newRV_noinc ((SV *)av)));
		810	PUTBACK;
		811	cb = hv_fetch ((HV *)SvRV (coro_current), strpair ("_trace_sub_cb"), 0);
		812	if (cb) call_sv (*cb, G_KEEPERR \| G_EVAL \| G_VOID \| G_DISCARD);
		813	SPAGAIN;
		814	FREETMPS;
		815	LEAVE;
		816	PL_runops = runops_trace;
		817	}
		818
		819	if (oldcop != PL_curcop)
		820	{
		821	oldcop = PL_curcop;
		822
		823	if (PL_curcop != &PL_compiling)
		824	{
		825	SV **cb;
		826
		827	if (oldcxix != cxstack_ix && cctx->flags & CC_TRACE_SUB)
		828	{
		829	PERL_CONTEXT *cx = &cxstack[cxstack_ix];
		830
		831	if (CxTYPE (cx) == CXt_SUB && oldcxix < cxstack_ix)
		832	{
		833	runops_proc_t old_runops = PL_runops;
		834	dSP;
		835	GV *gv = CvGV (cx->blk_sub.cv);
		836	SV *fullname = sv_2mortal (newSV (0));
		837
		838	if (isGV (gv))
		839	gv_efullname3 (fullname, gv, 0);
		840
		841	PL_runops = RUNOPS_DEFAULT;
		842	ENTER;
		843	SAVETMPS;
		844	EXTEND (SP, 3);
		845	PUSHMARK (SP);
		846	PUSHs (&PL_sv_yes);
		847	PUSHs (fullname);
		848	PUSHs (cx->blk_sub.hasargs ? sv_2mortal (newRV_inc ((SV *)cx->blk_sub.argarray)) : &PL_sv_undef);
		849	PUTBACK;
		850	cb = hv_fetch ((HV *)SvRV (coro_current), strpair ("_trace_sub_cb"), 0);
		851	if (cb) call_sv (*cb, G_KEEPERR \| G_EVAL \| G_VOID \| G_DISCARD);
		852	SPAGAIN;
		853	FREETMPS;
		854	LEAVE;
		855	PL_runops = runops_trace;
		856	}
		857
		858	oldcxix = cxstack_ix;
		859	}
		860
		861	if (cctx->flags & CC_TRACE_LINE)
		862	{
		863	dSP;
		864
		865	PL_runops = RUNOPS_DEFAULT;
		866	ENTER;
		867	SAVETMPS;
		868	EXTEND (SP, 3);
		869	PL_runops = RUNOPS_DEFAULT;
		870	PUSHMARK (SP);
		871	PUSHs (sv_2mortal (newSVpv (OutCopFILE (oldcop), 0)));
		872	PUSHs (sv_2mortal (newSViv (CopLINE (oldcop))));
		873	PUTBACK;
		874	cb = hv_fetch ((HV *)SvRV (coro_current), strpair ("_trace_line_cb"), 0);
		875	if (cb) call_sv (*cb, G_KEEPERR \| G_EVAL \| G_VOID \| G_DISCARD);
		876	SPAGAIN;
		877	FREETMPS;
		878	LEAVE;
		879	PL_runops = runops_trace;
		880	}
		881	}
		882	}
		883	}
		884	}
		885
		886	TAINT_NOT;
		887	return 0;
		888	}
		889
		890	/* inject a fake call to Coro::State::_cctx_init into the execution */
		891	/* _cctx_init should be careful, as it could be called at almost any time */
		892	/* during execution of a perl program */
602	static void NOINLINE	893	static void NOINLINE
603	prepare_cctx (coro_cctx *cctx)	894	cctx_prepare (pTHX_ coro_cctx *cctx)
604	{	895	{
605	dSP;	896	dSP;
606	LOGOP myop;	897	LOGOP myop;
607		898
		899	PL_top_env = &PL_start_env;
		900
		901	if (cctx->flags & CC_TRACE)
		902	PL_runops = runops_trace;
		903
608	Zero (&myop, 1, LOGOP);	904	Zero (&myop, 1, LOGOP);
609	myop.op_next = PL_op;	905	myop.op_next = PL_op;
610	myop.op_flags = OPf_WANT_VOID;	906	myop.op_flags = OPf_WANT_VOID \| OPf_STACKED;
611
612	sv_setiv (get_sv ("Coro::State::cctx", FALSE), PTR2IV (cctx));
613		907
614	PUSHMARK (SP);	908	PUSHMARK (SP);
		909	EXTEND (SP, 2);
		910	PUSHs (sv_2mortal (newSViv (PTR2IV (cctx))));
615	XPUSHs ((SV *)get_cv ("Coro::State::cctx_init", FALSE));	911	PUSHs ((SV *)get_cv ("Coro::State::_cctx_init", FALSE));
616	PUTBACK;	912	PUTBACK;
		913	PL_op = (OP *)&myop;
617	PL_restartop = PL_ppaddr[OP_ENTERSUB](aTHX);	914	PL_op = PL_ppaddr[OP_ENTERSUB](aTHX);
618	SPAGAIN;	915	SPAGAIN;
619	}	916	}
620		917
		918	/*
		919	* this is a _very_ stripped down perl interpreter ;)
		920	*/
621	static void	921	static void
622	coro_run (void *arg)	922	cctx_run (void *arg)
623	{	923	{
		924	dTHX;
		925
624	/* coro_run is the alternative epilogue of transfer() */	926	/* cctx_run is the alternative tail of transfer(), so unlock here. */
625	UNLOCK;	927	UNLOCK;
626		928
		929	/* we now skip the entersub that lead to transfer() */
		930	PL_op = PL_op->op_next;
		931
		932	/* inject a fake subroutine call to cctx_init */
		933	cctx_prepare (aTHX_ (coro_cctx *)arg);
		934
		935	/* somebody or something will hit me for both perl_run and PL_restartop */
		936	PL_restartop = PL_op;
		937	perl_run (PL_curinterp);
		938
627	/*	939	/*
628	* this is a _very_ stripped down perl interpreter ;)	940	* If perl-run returns we assume exit() was being called or the coro
		941	* fell off the end, which seems to be the only valid (non-bug)
		942	* reason for perl_run to return. We try to exit by jumping to the
		943	* bootstrap-time "top" top_env, as we cannot restore the "main"
		944	* coroutine as Coro has no such concept
629	*/	945	*/
630	PL_top_env = &PL_start_env;	946	PL_top_env = main_top_env;
631	/* inject call to cctx_init */	947	JMPENV_JUMP (2); /* I do not feel well about the hardcoded 2 at all */
632	prepare_cctx ((coro_cctx *)arg);
633
634	/* somebody will hit me for both perl_run and PL_restartop */
635	perl_run (PL_curinterp);
636
637	fputs ("FATAL: C coroutine fell over the edge of the world, aborting. Did you call exit in a coroutine?\n", stderr);
638	abort ();
639	}	948	}
640		949
641	static coro_cctx *	950	static coro_cctx *
642	cctx_new ()	951	cctx_new ()
643	{	952	{
644	coro_cctx *cctx;	953	coro_cctx *cctx;
		954	void *stack_start;
		955	size_t stack_size;
645		956
		957	++cctx_count;
		958
646	New (0, cctx, 1, coro_cctx);	959	Newz (0, cctx, 1, coro_cctx);
647		960
648	#if HAVE_MMAP	961	#if HAVE_MMAP
649
650	cctx->ssize = ((STACKSIZE * sizeof (long) + PAGESIZE - 1) / PAGESIZE + STACKGUARD) * PAGESIZE;	962	cctx->ssize = ((coro_stacksize * sizeof (long) + PAGESIZE - 1) / PAGESIZE + CORO_STACKGUARD) * PAGESIZE;
651	/* mmap suppsedly does allocate-on-write for us */	963	/* mmap supposedly does allocate-on-write for us */
652	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);
653		965
654	if (cctx->sptr == (void *)-1)	966	if (cctx->sptr != (void *)-1)
655	{
656	perror ("FATAL: unable to mmap stack for coroutine");
657	_exit (EXIT_FAILURE);
658	}	967	{
659
660	# if STACKGUARD	968	# if CORO_STACKGUARD
661	mprotect (cctx->sptr, STACKGUARD * PAGESIZE, PROT_NONE);	969	mprotect (cctx->sptr, CORO_STACKGUARD * PAGESIZE, PROT_NONE);
662	# 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);
663		980
664	#else
665
666	cctx->ssize = STACKSIZE * (long)sizeof (long);
667	New (0, cctx->sptr, STACKSIZE, long);
668
669	if (!cctx->sptr)	981	if (!cctx->sptr)
670	{	982	{
671	perror ("FATAL: unable to malloc stack for coroutine");	983	perror ("FATAL: unable to allocate stack for coroutine");
672	_exit (EXIT_FAILURE);	984	_exit (EXIT_FAILURE);
673	}	985	}
674		986
675	#endif	987	stack_start = cctx->sptr;
		988	stack_size = cctx->ssize;
		989	}
676		990
677	#if USE_VALGRIND	991	REGISTER_STACK (cctx, (char )stack_start, (char )stack_start + stack_size);
678	cctx->valgrind_id = VALGRIND_STACK_REGISTER (	992	coro_create (&cctx->cctx, cctx_run, (void *)cctx, stack_start, stack_size);
679	STACKGUARD * PAGESIZE + (char *)cctx->sptr,
680	cctx->ssize + (char *)cctx->sptr
681	);
682	#endif
683
684	coro_create (&cctx->cctx, coro_run, (void *)cctx, cctx->sptr, cctx->ssize);
685		993
686	return cctx;	994	return cctx;
687	}	995	}
688		996
689	static void	997	static void
690	cctx_free (coro_cctx *cctx)	998	cctx_destroy (coro_cctx *cctx)
691	{	999	{
692	if (!cctx)	1000	if (!cctx)
693	return;	1001	return;
694		1002
		1003	--cctx_count;
		1004
695	#if USE_VALGRIND	1005	#if CORO_USE_VALGRIND
696	VALGRIND_STACK_DEREGISTER (cctx->valgrind_id);	1006	VALGRIND_STACK_DEREGISTER (cctx->valgrind_id);
697	#endif	1007	#endif
698		1008
699	#if HAVE_MMAP	1009	#if HAVE_MMAP
		1010	if (cctx->flags & CC_MAPPED)
700	munmap (cctx->sptr, cctx->ssize);	1011	munmap (cctx->sptr, cctx->ssize);
701	#else	1012	else
		1013	#endif
702	Safefree (cctx->sptr);	1014	Safefree (cctx->sptr);
703	#endif
704		1015
705	Safefree (cctx);	1016	Safefree (cctx);
706	}	1017	}
707		1018
708	static coro_cctx *cctx_first;	1019	/* wether this cctx should be destructed */
709	static int cctx_count, cctx_idle;	1020	#define CCTX_EXPIRED(cctx) ((cctx)->ssize < coro_stacksize \|\| ((cctx)->flags & CC_NOREUSE))
710		1021
711	static coro_cctx *	1022	static coro_cctx *
712	cctx_get ()	1023	cctx_get (pTHX)
713	{	1024	{
714	coro_cctx *cctx;	1025	while (expect_true (cctx_first))
715
716	if (cctx_first)
717	{	1026	{
		1027	coro_cctx *cctx = cctx_first;
		1028	cctx_first = cctx->next;
718	--cctx_idle;	1029	--cctx_idle;
719	cctx = cctx_first;	1030
720	cctx_first = cctx->next;	1031	if (expect_true (!CCTX_EXPIRED (cctx)))
721	}	1032	return cctx;
722	else	1033
723	{	1034	cctx_destroy (cctx);
724	++cctx_count;
725	cctx = cctx_new ();
726	PL_op = PL_op->op_next;
727	}	1035	}
728		1036
729	return cctx;	1037	return cctx_new ();
730	}	1038	}
731		1039
732	static void	1040	static void
733	cctx_put (coro_cctx *cctx)	1041	cctx_put (coro_cctx *cctx)
734	{	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
735	++cctx_idle;	1053	++cctx_idle;
736	cctx->next = cctx_first;	1054	cctx->next = cctx_first;
737	cctx_first = cctx;	1055	cctx_first = cctx;
738	}	1056	}
739		1057
740	/* 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 */
741	static void NOINLINE	1086	static void NOINLINE
742	transfer (struct coro prev, struct coro next, int flags)	1087	transfer (pTHX_ struct coro prev, struct coro next)
743	{	1088	{
744	dSTACKLEVEL;	1089	dSTACKLEVEL;
745		1090
746	/* sometimes transfer is only called to set idle_sp */	1091	/* sometimes transfer is only called to set idle_sp */
747	if (flags == TRANSFER_SET_STACKLEVEL)	1092	if (expect_false (!next))
		1093	{
748	((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	}
749	else if (prev != next)	1097	else if (expect_true (prev != next))
750	{	1098	{
751	coro_cctx *prev__cctx;	1099	coro_cctx *prev__cctx;
752		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
753	LOCK;	1112	LOCK;
754		1113
755	if (next->mainstack)	1114	if (expect_false (next->flags & CF_NEW))
756	{	1115	{
757	/* coroutine already started */	1116	/* need to start coroutine */
758	SAVE (prev, flags);	1117	next->flags &= ~CF_NEW;
759	LOAD (next);	1118	/* first get rid of the old state */
		1119	save_perl (aTHX_ prev);
		1120	/* setup coroutine call */
		1121	coro_setup (aTHX_ next);
760	}	1122	}
761	else	1123	else
762	{	1124	{
763	/* need to start coroutine */	1125	/* coroutine already started */
764	/* first get rid of the old state */	1126	save_perl (aTHX_ prev);
765	SAVE (prev, -1);	1127	load_perl (aTHX_ next);
766	/* setup coroutine call */
767	setup_coro (next);
768	/* need a stack */
769	next->cctx = 0;
770	}	1128	}
771		1129
772	if (!prev->cctx)
773	/* create a new empty context */
774	Newz (0, prev->cctx, 1, coro_cctx);
775
776	prev__cctx = prev->cctx;	1130	prev__cctx = prev->cctx;
777		1131
778	/* possibly "free" the cctx */	1132	/* possibly "free" the cctx */
779	if (prev__cctx->idle_sp == STACKLEVEL)	1133	if (expect_true (prev__cctx->idle_sp == STACKLEVEL && !(prev__cctx->flags & CC_TRACE)))
780	{	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	if (!next->cctx)
		1144	next->cctx = cctx_get (aTHX);
		1145
781	cctx_put (prev__cctx);	1146	cctx_put (prev__cctx);
782	prev->cctx = 0;
783	}	1147	}
784		1148
		1149	++next->usecount;
		1150
785	if (!next->cctx)	1151	if (expect_true (!next->cctx))
786	next->cctx = cctx_get ();	1152	next->cctx = cctx_get (aTHX);
787		1153
788	if (prev__cctx != next->cctx)	1154	if (expect_false (prev__cctx != next->cctx))
789	{	1155	{
790	prev__cctx->top_env = PL_top_env;	1156	prev__cctx->top_env = PL_top_env;
791	PL_top_env = next->cctx->top_env;	1157	PL_top_env = next->cctx->top_env;
792	coro_transfer (&prev__cctx->cctx, &next->cctx->cctx);	1158	coro_transfer (&prev__cctx->cctx, &next->cctx->cctx);
793	}	1159	}
794		1160
795	free_coro_mortal ();	1161	free_coro_mortal (aTHX);
796
797	UNLOCK;	1162	UNLOCK;
		1163
		1164	if (expect_false (prev->throw \|\| next->throw))
		1165	{
		1166	struct coro *coro = SvSTATE (coro_current);
		1167
		1168	if (coro->throw)
		1169	{
		1170	SV *exception = coro->throw;
		1171	coro->throw = 0;
		1172	sv_setsv (ERRSV, exception);
		1173	croak (0);
		1174	}
		1175	}
798	}	1176	}
799	}	1177	}
800		1178
801	struct transfer_args	1179	struct transfer_args
802	{	1180	{
803	struct coro prev, next;	1181	struct coro prev, next;
804	int flags;
805	};	1182	};
806		1183
807	#define TRANSFER(ta) transfer ((ta).prev, (ta).next, (ta).flags)	1184	#define TRANSFER(ta) transfer (aTHX_ (ta).prev, (ta).next)
		1185	#define TRANSFER_CHECK(ta) transfer_check (aTHX_ (ta).prev, (ta).next)
808		1186
		1187	/ high level stuff ******************************************************/
		1188
809	static void	1189	static int
810	coro_state_destroy (struct coro *coro)	1190	coro_state_destroy (pTHX_ struct coro *coro)
811	{	1191	{
812	if (coro->refcnt--)	1192	if (coro->flags & CF_DESTROYED)
813	return;	1193	return 0;
		1194
		1195	coro->flags \|= CF_DESTROYED;
		1196
		1197	if (coro->flags & CF_READY)
		1198	{
		1199	/* reduce nready, as destroying a ready coro effectively unreadies it */
		1200	/* alternative: look through all ready queues and remove the coro */
		1201	LOCK;
		1202	--coro_nready;
		1203	UNLOCK;
		1204	}
		1205	else
		1206	coro->flags \|= CF_READY; /* make sure it is NOT put into the readyqueue */
814		1207
815	if (coro->mainstack && coro->mainstack != main_mainstack)	1208	if (coro->mainstack && coro->mainstack != main_mainstack)
816	{	1209	{
817	struct coro temp;	1210	struct coro temp;
818		1211
819	SAVE ((&temp), TRANSFER_SAVE_ALL);	1212	if (coro->flags & CF_RUNNING)
820	LOAD (coro);	1213	croak ("FATAL: tried to destroy currently running coroutine");
821		1214
822	coro_destroy_stacks ();	1215	save_perl (aTHX_ &temp);
		1216	load_perl (aTHX_ coro);
823		1217
824	LOAD ((&temp)); /* this will get rid of defsv etc.. */	1218	coro_destroy (aTHX_ coro);
825		1219
		1220	load_perl (aTHX_ &temp);
		1221
826	coro->mainstack = 0;	1222	coro->slot = 0;
827	}	1223	}
828		1224
829	cctx_free (coro->cctx);	1225	cctx_destroy (coro->cctx);
830	SvREFCNT_dec (coro->args);	1226	SvREFCNT_dec (coro->args);
831	Safefree (coro);	1227
		1228	if (coro->next) coro->next->prev = coro->prev;
		1229	if (coro->prev) coro->prev->next = coro->next;
		1230	if (coro == coro_first) coro_first = coro->next;
		1231
		1232	return 1;
832	}	1233	}
833		1234
834	static int	1235	static int
835	coro_state_clear (pTHX_ SV sv, MAGIC mg)	1236	coro_state_free (pTHX_ SV sv, MAGIC mg)
836	{	1237	{
837	struct coro coro = (struct coro )mg->mg_ptr;	1238	struct coro coro = (struct coro )mg->mg_ptr;
838	mg->mg_ptr = 0;	1239	mg->mg_ptr = 0;
839		1240
		1241	coro->hv = 0;
		1242
		1243	if (--coro->refcnt < 0)
		1244	{
840	coro_state_destroy (coro);	1245	coro_state_destroy (aTHX_ coro);
		1246	Safefree (coro);
		1247	}
841		1248
842	return 0;	1249	return 0;
843	}	1250	}
844		1251
845	static int	1252	static int
…		…
852	return 0;	1259	return 0;
853	}	1260	}
854		1261
855	static MGVTBL coro_state_vtbl = {	1262	static MGVTBL coro_state_vtbl = {
856	0, 0, 0, 0,	1263	0, 0, 0, 0,
857	coro_state_clear,	1264	coro_state_free,
858	0,	1265	0,
859	#ifdef MGf_DUP	1266	#ifdef MGf_DUP
860	coro_state_dup,	1267	coro_state_dup,
861	#else	1268	#else
862	# define MGf_DUP 0	1269	# define MGf_DUP 0
863	#endif	1270	#endif
864	};	1271	};
865		1272
866	static struct coro *
867	SvSTATE (SV *coro)
868	{
869	HV *stash;
870	MAGIC *mg;
871
872	if (SvROK (coro))
873	coro = SvRV (coro);
874
875	stash = SvSTASH (coro);
876	if (stash != coro_stash && stash != coro_state_stash)
877	{
878	/* very slow, but rare, check */
879	if (!sv_derived_from (sv_2mortal (newRV_inc (coro)), "Coro::State"))
880	croak ("Coro::State object required");
881	}
882
883	mg = SvMAGIC (coro);
884	assert (mg->mg_type == PERL_MAGIC_ext);
885	return (struct coro *)mg->mg_ptr;
886	}
887
888	static void	1273	static void
889	prepare_transfer (struct transfer_args ta, SV prev, SV *next, int flags)	1274	prepare_transfer (pTHX_ struct transfer_args ta, SV prev_sv, SV *next_sv)
890	{	1275	{
891	ta->prev = SvSTATE (prev);	1276	ta->prev = SvSTATE (prev_sv);
892	ta->next = SvSTATE (next);	1277	ta->next = SvSTATE (next_sv);
893	ta->flags = flags;	1278	TRANSFER_CHECK (*ta);
894	}	1279	}
895		1280
896	static void	1281	static void
897	api_transfer (SV prev, SV next, int flags)	1282	api_transfer (SV prev_sv, SV next_sv)
898	{	1283	{
899	dTHX;	1284	dTHX;
900	struct transfer_args ta;	1285	struct transfer_args ta;
901		1286
902	prepare_transfer (&ta, prev, next, flags);	1287	prepare_transfer (aTHX_ &ta, prev_sv, next_sv);
903	TRANSFER (ta);	1288	TRANSFER (ta);
904	}	1289	}
905		1290
906	/ Coro ******************************************************************/	1291	/ Coro ******************************************************************/
907		1292
908	#define PRIO_MAX 3
909	#define PRIO_HIGH 1
910	#define PRIO_NORMAL 0
911	#define PRIO_LOW -1
912	#define PRIO_IDLE -3
913	#define PRIO_MIN -4
914
915	/* for Coro.pm */
916	static GV coro_current, coro_idle;
917	static AV *coro_ready [PRIO_MAX-PRIO_MIN+1];
918	static int coro_nready;
919
920	static void	1293	static void
921	coro_enq (SV *sv)	1294	coro_enq (pTHX_ SV *coro_sv)
922	{	1295	{
923	int prio;
924
925	if (SvTYPE (sv) != SVt_PVHV)
926	croak ("Coro::ready tried to enqueue something that is not a coroutine");
927
928	prio = SvSTATE (sv)->prio;
929
930	av_push (coro_ready [prio - PRIO_MIN], sv);	1296	av_push (coro_ready [SvSTATE (coro_sv)->prio - PRIO_MIN], coro_sv);
931	coro_nready++;
932	}	1297	}
933		1298
934	static SV *	1299	static SV *
935	coro_deq (int min_prio)	1300	coro_deq (pTHX_ int min_prio)
936	{	1301	{
937	int prio = PRIO_MAX - PRIO_MIN;	1302	int prio = PRIO_MAX - PRIO_MIN;
938		1303
939	min_prio -= PRIO_MIN;	1304	min_prio -= PRIO_MIN;
940	if (min_prio < 0)	1305	if (min_prio < 0)
941	min_prio = 0;	1306	min_prio = 0;
942		1307
943	for (prio = PRIO_MAX - PRIO_MIN + 1; --prio >= min_prio; )	1308	for (prio = PRIO_MAX - PRIO_MIN + 1; --prio >= min_prio; )
944	if (AvFILLp (coro_ready [prio]) >= 0)	1309	if (AvFILLp (coro_ready [prio]) >= 0)
945	{
946	coro_nready--;
947	return av_shift (coro_ready [prio]);	1310	return av_shift (coro_ready [prio]);
948	}
949		1311
950	return 0;	1312	return 0;
951	}	1313	}
952		1314
953	static void	1315	static int
954	api_ready (SV *coro)	1316	api_ready (SV *coro_sv)
955	{	1317	{
956	dTHX;	1318	dTHX;
		1319	struct coro *coro;
957		1320
958	if (SvROK (coro))	1321	if (SvROK (coro_sv))
959	coro = SvRV (coro);	1322	coro_sv = SvRV (coro_sv);
		1323
		1324	coro = SvSTATE (coro_sv);
		1325
		1326	if (coro->flags & CF_READY)
		1327	return 0;
		1328
		1329	coro->flags \|= CF_READY;
960		1330
961	LOCK;	1331	LOCK;
962	coro_enq (SvREFCNT_inc (coro));	1332	coro_enq (aTHX_ SvREFCNT_inc (coro_sv));
		1333	++coro_nready;
963	UNLOCK;	1334	UNLOCK;
964	}
965		1335
		1336	return 1;
		1337	}
		1338
966	static void	1339	static int
		1340	api_is_ready (SV *coro_sv)
		1341	{
		1342	dTHX;
		1343	return !!(SvSTATE (coro_sv)->flags & CF_READY);
		1344	}
		1345
		1346	static void
967	prepare_schedule (struct transfer_args *ta)	1347	prepare_schedule (pTHX_ struct transfer_args *ta)
968	{	1348	{
969	SV current, prev, *next;	1349	SV prev_sv, next_sv;
970
971	current = GvSV (coro_current);
972		1350
973	for (;;)	1351	for (;;)
974	{	1352	{
975	LOCK;	1353	LOCK;
976	next = coro_deq (PRIO_MIN);	1354	next_sv = coro_deq (aTHX_ PRIO_MIN);
		1355
		1356	/* nothing to schedule: call the idle handler */
		1357	if (expect_false (!next_sv))
		1358	{
		1359	dSP;
		1360	UNLOCK;
		1361
		1362	ENTER;
		1363	SAVETMPS;
		1364
		1365	PUSHMARK (SP);
		1366	PUTBACK;
		1367	call_sv (get_sv ("Coro::idle", FALSE), G_DISCARD);
		1368
		1369	FREETMPS;
		1370	LEAVE;
		1371	continue;
		1372	}
		1373
		1374	ta->next = SvSTATE (next_sv);
		1375
		1376	/* cannot transfer to destroyed coros, skip and look for next */
		1377	if (expect_false (ta->next->flags & CF_DESTROYED))
		1378	{
		1379	UNLOCK;
		1380	SvREFCNT_dec (next_sv);
		1381	/* coro_nready is already taken care of by destroy */
		1382	continue;
		1383	}
		1384
		1385	--coro_nready;
977	UNLOCK;	1386	UNLOCK;
978
979	if (next)
980	break;	1387	break;
981
982	{
983	dSP;
984
985	ENTER;
986	SAVETMPS;
987
988	PUSHMARK (SP);
989	PUTBACK;
990	call_sv (GvSV (coro_idle), G_DISCARD);
991
992	FREETMPS;
993	LEAVE;
994	}	1388	}
995	}
996
997	prev = SvRV (current);
998	SvRV (current) = next;
999		1389
1000	/* free this only after the transfer */	1390	/* free this only after the transfer */
		1391	prev_sv = SvRV (coro_current);
		1392	ta->prev = SvSTATE (prev_sv);
		1393	TRANSFER_CHECK (*ta);
		1394	assert (ta->next->flags & CF_READY);
		1395	ta->next->flags &= ~CF_READY;
		1396	SvRV_set (coro_current, next_sv);
		1397
1001	LOCK;	1398	LOCK;
1002	free_coro_mortal ();	1399	free_coro_mortal (aTHX);
		1400	coro_mortal = prev_sv;
1003	UNLOCK;	1401	UNLOCK;
1004	coro_mortal = prev;
1005
1006	ta->prev = SvSTATE (prev);
1007	ta->next = SvSTATE (next);
1008	ta->flags = TRANSFER_SAVE_ALL;
1009	}	1402	}
1010		1403
1011	static void	1404	static void
1012	prepare_cede (struct transfer_args *ta)	1405	prepare_cede (pTHX_ struct transfer_args *ta)
1013	{	1406	{
1014	LOCK;	1407	api_ready (coro_current);
1015	coro_enq (SvREFCNT_inc (SvRV (GvSV (coro_current))));
1016	UNLOCK;
1017
1018	prepare_schedule (ta);	1408	prepare_schedule (aTHX_ ta);
		1409	}
		1410
		1411	static int
		1412	prepare_cede_notself (pTHX_ struct transfer_args *ta)
		1413	{
		1414	if (coro_nready)
		1415	{
		1416	SV *prev = SvRV (coro_current);
		1417	prepare_schedule (aTHX_ ta);
		1418	api_ready (prev);
		1419	return 1;
		1420	}
		1421	else
		1422	return 0;
1019	}	1423	}
1020		1424
1021	static void	1425	static void
1022	api_schedule (void)	1426	api_schedule (void)
1023	{	1427	{
1024	dTHX;	1428	dTHX;
1025	struct transfer_args ta;	1429	struct transfer_args ta;
1026		1430
1027	prepare_schedule (&ta);	1431	prepare_schedule (aTHX_ &ta);
1028	TRANSFER (ta);	1432	TRANSFER (ta);
1029	}	1433	}
1030		1434
1031	static void	1435	static int
1032	api_cede (void)	1436	api_cede (void)
1033	{	1437	{
1034	dTHX;	1438	dTHX;
1035	struct transfer_args ta;	1439	struct transfer_args ta;
1036		1440
1037	prepare_cede (&ta);	1441	prepare_cede (aTHX_ &ta);
		1442
		1443	if (expect_true (ta.prev != ta.next))
		1444	{
1038	TRANSFER (ta);	1445	TRANSFER (ta);
		1446	return 1;
		1447	}
		1448	else
		1449	return 0;
1039	}	1450	}
1040		1451
		1452	static int
		1453	api_cede_notself (void)
		1454	{
		1455	dTHX;
		1456	struct transfer_args ta;
		1457
		1458	if (prepare_cede_notself (aTHX_ &ta))
		1459	{
		1460	TRANSFER (ta);
		1461	return 1;
		1462	}
		1463	else
		1464	return 0;
		1465	}
		1466
		1467	static void
		1468	api_trace (SV *coro_sv, int flags)
		1469	{
		1470	dTHX;
		1471	struct coro *coro = SvSTATE (coro_sv);
		1472
		1473	if (flags & CC_TRACE)
		1474	{
		1475	if (!coro->cctx)
		1476	coro->cctx = cctx_new ();
		1477	else if (!(coro->cctx->flags & CC_TRACE))
		1478	croak ("cannot enable tracing on coroutine with custom stack");
		1479
		1480	coro->cctx->flags \|= CC_NOREUSE \| (flags & (CC_TRACE \| CC_TRACE_ALL));
		1481	}
		1482	else if (coro->cctx && coro->cctx->flags & CC_TRACE)
		1483	{
		1484	coro->cctx->flags &= ~(CC_TRACE \| CC_TRACE_ALL);
		1485
		1486	if (coro->flags & CF_RUNNING)
		1487	PL_runops = RUNOPS_DEFAULT;
		1488	else
		1489	coro->slot->runops = RUNOPS_DEFAULT;
		1490	}
		1491	}
		1492
1041	MODULE = Coro::State PACKAGE = Coro::State	1493	MODULE = Coro::State PACKAGE = Coro::State PREFIX = api_
1042		1494
1043	PROTOTYPES: DISABLE	1495	PROTOTYPES: DISABLE
1044		1496
1045	BOOT:	1497	BOOT:
1046	{	1498	{
1047	#ifdef USE_ITHREADS	1499	#ifdef USE_ITHREADS
1048	MUTEX_INIT (&coro_mutex);	1500	MUTEX_INIT (&coro_mutex);
1049	#endif	1501	#endif
1050	BOOT_PAGESIZE;	1502	BOOT_PAGESIZE;
1051		1503
		1504	irsgv = gv_fetchpv ("/" , GV_ADD\|GV_NOTQUAL, SVt_PV);
		1505	stdoutgv = gv_fetchpv ("STDOUT", GV_ADD\|GV_NOTQUAL, SVt_PVIO);
		1506
		1507	hv_sig = coro_get_hv ("SIG", TRUE);
		1508	sv_diehook = coro_get_sv ("Coro::State::DIEHOOK" , TRUE);
		1509	sv_warnhook = coro_get_sv ("Coro::State::WARNHOOK", TRUE);
		1510
		1511	if (!PL_diehook ) hv_store (hv_sig, strpair ("__DIE__" ), SvREFCNT_inc (sv_diehook ), 0);
		1512	if (!PL_warnhook) hv_store (hv_sig, strpair ("__WARN__"), SvREFCNT_inc (sv_warnhook), 0);
		1513
1052	coro_state_stash = gv_stashpv ("Coro::State", TRUE);	1514	coro_state_stash = gv_stashpv ("Coro::State", TRUE);
1053		1515
1054	newCONSTSUB (coro_state_stash, "SAVE_DEFAV", newSViv (TRANSFER_SAVE_DEFAV));	1516	newCONSTSUB (coro_state_stash, "CC_TRACE" , newSViv (CC_TRACE));
1055	newCONSTSUB (coro_state_stash, "SAVE_DEFSV", newSViv (TRANSFER_SAVE_DEFSV));	1517	newCONSTSUB (coro_state_stash, "CC_TRACE_SUB" , newSViv (CC_TRACE_SUB));
1056	newCONSTSUB (coro_state_stash, "SAVE_ERRSV", newSViv (TRANSFER_SAVE_ERRSV));	1518	newCONSTSUB (coro_state_stash, "CC_TRACE_LINE", newSViv (CC_TRACE_LINE));
		1519	newCONSTSUB (coro_state_stash, "CC_TRACE_ALL" , newSViv (CC_TRACE_ALL));
1057		1520
1058	main_mainstack = PL_mainstack;	1521	main_mainstack = PL_mainstack;
		1522	main_top_env = PL_top_env;
		1523
		1524	while (main_top_env->je_prev)
		1525	main_top_env = main_top_env->je_prev;
1059		1526
1060	coroapi.ver = CORO_API_VERSION;	1527	coroapi.ver = CORO_API_VERSION;
1061	coroapi.transfer = api_transfer;	1528	coroapi.transfer = api_transfer;
1062		1529
1063	assert (("PRIO_NORMAL must be 0", !PRIO_NORMAL));	1530	assert (("PRIO_NORMAL must be 0", !PRIO_NORMAL));
…		…
1070	struct coro *coro;	1537	struct coro *coro;
1071	HV *hv;	1538	HV *hv;
1072	int i;	1539	int i;
1073		1540
1074	Newz (0, coro, 1, struct coro);	1541	Newz (0, coro, 1, struct coro);
1075	coro->args = newAV ();	1542	coro->args = newAV ();
		1543	coro->flags = CF_NEW;
1076		1544
		1545	if (coro_first) coro_first->prev = coro;
		1546	coro->next = coro_first;
		1547	coro_first = coro;
		1548
1077	hv = newHV ();	1549	coro->hv = hv = newHV ();
1078	sv_magicext ((SV )hv, 0, PERL_MAGIC_ext, &coro_state_vtbl, (char )coro, 0)->mg_flags \|= MGf_DUP;	1550	sv_magicext ((SV )hv, 0, PERL_MAGIC_ext, &coro_state_vtbl, (char )coro, 0)->mg_flags \|= MGf_DUP;
1079	RETVAL = sv_bless (newRV_noinc ((SV *)hv), gv_stashpv (klass, 1));	1551	RETVAL = sv_bless (newRV_noinc ((SV *)hv), gv_stashpv (klass, 1));
1080		1552
		1553	av_extend (coro->args, items - 1);
1081	for (i = 1; i < items; i++)	1554	for (i = 1; i < items; i++)
1082	av_push (coro->args, newSVsv (ST (i)));	1555	av_push (coro->args, newSVsv (ST (i)));
1083	}	1556	}
1084	OUTPUT:	1557	OUTPUT:
1085	RETVAL	1558	RETVAL
1086		1559
		1560	# these not obviously related functions are all rolled into the same xs
		1561	# function to increase chances that they all will call transfer with the same
		1562	# stack offset
1087	void	1563	void
1088	_set_stacklevel (...)	1564	_set_stacklevel (...)
1089	ALIAS:	1565	ALIAS:
1090	Coro::State::transfer = 1	1566	Coro::State::transfer = 1
1091	Coro::schedule = 2	1567	Coro::schedule = 2
1092	Coro::cede = 3	1568	Coro::cede = 3
1093	Coro::Cont::yield = 4	1569	Coro::cede_notself = 4
1094	CODE:	1570	CODE:
1095	{	1571	{
1096	struct transfer_args ta;	1572	struct transfer_args ta;
1097		1573
1098	switch (ix)	1574	switch (ix)
1099	{	1575	{
1100	case 0:	1576	case 0:
1101	ta.prev = (struct coro )INT2PTR (coro_cctx , SvIV (ST (0)));	1577	ta.prev = (struct coro )INT2PTR (coro_cctx , SvIV (ST (0)));
1102	ta.next = 0;	1578	ta.next = 0;
1103	ta.flags = TRANSFER_SET_STACKLEVEL;
1104	break;	1579	break;
1105		1580
1106	case 1:	1581	case 1:
1107	if (items != 3)	1582	if (items != 2)
1108	croak ("Coro::State::transfer(prev,next,flags) expects three arguments, not %d", items);	1583	croak ("Coro::State::transfer (prev,next) expects two arguments, not %d", items);
1109		1584
1110	prepare_transfer (&ta, ST (0), ST (1), SvIV (ST (2)));	1585	prepare_transfer (aTHX_ &ta, ST (0), ST (1));
1111	break;	1586	break;
1112		1587
1113	case 2:	1588	case 2:
1114	prepare_schedule (&ta);	1589	prepare_schedule (aTHX_ &ta);
1115	break;	1590	break;
1116		1591
1117	case 3:	1592	case 3:
1118	prepare_cede (&ta);	1593	prepare_cede (aTHX_ &ta);
1119	break;	1594	break;
1120		1595
1121	case 4:	1596	case 4:
1122	{	1597	if (!prepare_cede_notself (aTHX_ &ta))
1123	SV *yieldstack;	1598	XSRETURN_EMPTY;
1124	SV *sv;
1125	AV *defav = GvAV (PL_defgv);
1126		1599
1127	yieldstack = *hv_fetch (
1128	(HV *)SvRV (GvSV (coro_current)),
1129	"yieldstack", sizeof ("yieldstack") - 1,
1130	0
1131	);
1132
1133	/* set up @_ -- ugly */
1134	av_clear (defav);
1135	av_fill (defav, items - 1);
1136	while (items--)
1137	av_store (defav, items, SvREFCNT_inc (ST(items)));
1138
1139	sv = av_pop ((AV *)SvRV (yieldstack));
1140	ta.prev = SvSTATE (av_fetch ((AV )SvRV (sv), 0, 0));
1141	ta.next = SvSTATE (av_fetch ((AV )SvRV (sv), 1, 0));
1142	ta.flags = 0;
1143	SvREFCNT_dec (sv);
1144	}
1145	break;	1600	break;
1146
1147	}	1601	}
1148		1602
		1603	BARRIER;
1149	TRANSFER (ta);	1604	TRANSFER (ta);
1150	}
1151		1605
1152	void	1606	if (expect_false (GIMME_V != G_VOID && ta.next != ta.prev))
1153	_clone_state_from (SV dst, SV src)	1607	XSRETURN_YES;
		1608	}
		1609
		1610	bool
		1611	_destroy (SV *coro_sv)
1154	CODE:	1612	CODE:
1155	{	1613	RETVAL = coro_state_destroy (aTHX_ SvSTATE (coro_sv));
1156	struct coro *coro_src = SvSTATE (src);	1614	OUTPUT:
1157		1615	RETVAL
1158	sv_unmagic (SvRV (dst), PERL_MAGIC_ext);
1159
1160	++coro_src->refcnt;
1161	sv_magicext (SvRV (dst), 0, PERL_MAGIC_ext, &coro_state_vtbl, (char *)coro_src, 0)->mg_flags \|= MGf_DUP;
1162	}
1163		1616
1164	void	1617	void
1165	_exit (code)	1618	_exit (code)
1166	int code	1619	int code
1167	PROTOTYPE: $	1620	PROTOTYPE: $
1168	CODE:	1621	CODE:
1169	_exit (code);	1622	_exit (code);
1170		1623
1171	int	1624	int
		1625	cctx_stacksize (int new_stacksize = 0)
		1626	CODE:
		1627	RETVAL = coro_stacksize;
		1628	if (new_stacksize)
		1629	coro_stacksize = new_stacksize;
		1630	OUTPUT:
		1631	RETVAL
		1632
		1633	int
1172	cctx_count ()	1634	cctx_count ()
1173	CODE:	1635	CODE:
1174	RETVAL = cctx_count;	1636	RETVAL = cctx_count;
1175	OUTPUT:	1637	OUTPUT:
1176	RETVAL	1638	RETVAL
…		…
1180	CODE:	1642	CODE:
1181	RETVAL = cctx_idle;	1643	RETVAL = cctx_idle;
1182	OUTPUT:	1644	OUTPUT:
1183	RETVAL	1645	RETVAL
1184		1646
		1647	void
		1648	list ()
		1649	PPCODE:
		1650	{
		1651	struct coro *coro;
		1652	for (coro = coro_first; coro; coro = coro->next)
		1653	if (coro->hv)
		1654	XPUSHs (sv_2mortal (newRV_inc ((SV *)coro->hv)));
		1655	}
		1656
		1657	void
		1658	call (Coro::State coro, SV *coderef)
		1659	ALIAS:
		1660	eval = 1
		1661	CODE:
		1662	{
		1663	if (coro->mainstack)
		1664	{
		1665	struct coro temp;
		1666
		1667	if (!(coro->flags & CF_RUNNING))
		1668	{
		1669	save_perl (aTHX_ &temp);
		1670	load_perl (aTHX_ coro);
		1671	}
		1672
		1673	{
		1674	dSP;
		1675	ENTER;
		1676	SAVETMPS;
		1677	PUSHMARK (SP);
		1678	PUTBACK;
		1679
		1680	if (ix)
		1681	eval_sv (coderef, 0);
		1682	else
		1683	call_sv (coderef, G_KEEPERR \| G_EVAL \| G_VOID \| G_DISCARD);
		1684
		1685	SPAGAIN;
		1686	FREETMPS;
		1687	LEAVE;
		1688	PUTBACK;
		1689	}
		1690
		1691	if (!(coro->flags & CF_RUNNING))
		1692	{
		1693	save_perl (aTHX_ coro);
		1694	load_perl (aTHX_ &temp);
		1695	}
		1696	}
		1697	}
		1698
		1699	SV *
		1700	is_ready (Coro::State coro)
		1701	PROTOTYPE: $
		1702	ALIAS:
		1703	is_ready = CF_READY
		1704	is_running = CF_RUNNING
		1705	is_new = CF_NEW
		1706	is_destroyed = CF_DESTROYED
		1707	CODE:
		1708	RETVAL = boolSV (coro->flags & ix);
		1709	OUTPUT:
		1710	RETVAL
		1711
		1712	void
		1713	api_trace (SV *coro, int flags = CC_TRACE \| CC_TRACE_SUB)
		1714
		1715	SV *
		1716	has_stack (Coro::State coro)
		1717	PROTOTYPE: $
		1718	CODE:
		1719	RETVAL = boolSV (!!coro->cctx);
		1720	OUTPUT:
		1721	RETVAL
		1722
		1723	int
		1724	is_traced (Coro::State coro)
		1725	PROTOTYPE: $
		1726	CODE:
		1727	RETVAL = (coro->cctx ? coro->cctx->flags : 0) & CC_TRACE_ALL;
		1728	OUTPUT:
		1729	RETVAL
		1730
		1731	IV
		1732	rss (Coro::State coro)
		1733	PROTOTYPE: $
		1734	ALIAS:
		1735	usecount = 1
		1736	CODE:
		1737	switch (ix)
		1738	{
		1739	case 0: RETVAL = coro_rss (aTHX_ coro); break;
		1740	case 1: RETVAL = coro->usecount; break;
		1741	}
		1742	OUTPUT:
		1743	RETVAL
		1744
		1745
1185	MODULE = Coro::State PACKAGE = Coro	1746	MODULE = Coro::State PACKAGE = Coro
1186		1747
1187	BOOT:	1748	BOOT:
1188	{	1749	{
1189	int i;	1750	int i;
1190		1751
		1752	sv_pool_rss = coro_get_sv ("Coro::POOL_RSS" , TRUE);
		1753	sv_pool_size = coro_get_sv ("Coro::POOL_SIZE" , TRUE);
		1754	av_async_pool = coro_get_av ("Coro::async_pool", TRUE);
		1755
		1756	coro_current = coro_get_sv ("Coro::current", FALSE);
		1757	SvREADONLY_on (coro_current);
		1758
1191	coro_stash = gv_stashpv ("Coro", TRUE);	1759	coro_stash = gv_stashpv ("Coro", TRUE);
1192		1760
1193	newCONSTSUB (coro_stash, "PRIO_MAX", newSViv (PRIO_MAX));	1761	newCONSTSUB (coro_stash, "PRIO_MAX", newSViv (PRIO_MAX));
1194	newCONSTSUB (coro_stash, "PRIO_HIGH", newSViv (PRIO_HIGH));	1762	newCONSTSUB (coro_stash, "PRIO_HIGH", newSViv (PRIO_HIGH));
1195	newCONSTSUB (coro_stash, "PRIO_NORMAL", newSViv (PRIO_NORMAL));	1763	newCONSTSUB (coro_stash, "PRIO_NORMAL", newSViv (PRIO_NORMAL));
1196	newCONSTSUB (coro_stash, "PRIO_LOW", newSViv (PRIO_LOW));	1764	newCONSTSUB (coro_stash, "PRIO_LOW", newSViv (PRIO_LOW));
1197	newCONSTSUB (coro_stash, "PRIO_IDLE", newSViv (PRIO_IDLE));	1765	newCONSTSUB (coro_stash, "PRIO_IDLE", newSViv (PRIO_IDLE));
1198	newCONSTSUB (coro_stash, "PRIO_MIN", newSViv (PRIO_MIN));	1766	newCONSTSUB (coro_stash, "PRIO_MIN", newSViv (PRIO_MIN));
1199		1767
1200	coro_current = gv_fetchpv ("Coro::current", TRUE, SVt_PV);
1201	coro_idle = gv_fetchpv ("Coro::idle" , TRUE, SVt_PV);
1202
1203	for (i = PRIO_MAX - PRIO_MIN + 1; i--; )	1768	for (i = PRIO_MAX - PRIO_MIN + 1; i--; )
1204	coro_ready[i] = newAV ();	1769	coro_ready[i] = newAV ();
1205		1770
1206	{	1771	{
1207	SV *sv = perl_get_sv("Coro::API", 1);	1772	SV *sv = perl_get_sv ("Coro::API", TRUE);
		1773	perl_get_sv ("Coro::API", TRUE); /* silence 5.10 warning */
1208		1774
1209	coroapi.schedule = api_schedule;	1775	coroapi.schedule = api_schedule;
1210	coroapi.cede = api_cede;	1776	coroapi.cede = api_cede;
		1777	coroapi.cede_notself = api_cede_notself;
1211	coroapi.ready = api_ready;	1778	coroapi.ready = api_ready;
		1779	coroapi.is_ready = api_is_ready;
1212	coroapi.nready = &coro_nready;	1780	coroapi.nready = &coro_nready;
1213	coroapi.current = coro_current;	1781	coroapi.current = coro_current;
1214		1782
1215	GCoroAPI = &coroapi;	1783	GCoroAPI = &coroapi;
1216	sv_setiv (sv, (IV)&coroapi);	1784	sv_setiv (sv, (IV)&coroapi);
1217	SvREADONLY_on (sv);	1785	SvREADONLY_on (sv);
1218	}	1786	}
1219	}	1787	}
		1788
		1789	void
		1790	_set_current (SV *current)
		1791	PROTOTYPE: $
		1792	CODE:
		1793	SvREFCNT_dec (SvRV (coro_current));
		1794	SvRV_set (coro_current, SvREFCNT_inc (SvRV (current)));
1220		1795
1221	int	1796	int
1222	prio (Coro::State coro, int newprio = 0)	1797	prio (Coro::State coro, int newprio = 0)
1223	ALIAS:	1798	ALIAS:
1224	nice = 1	1799	nice = 1
…		…
1227	RETVAL = coro->prio;	1802	RETVAL = coro->prio;
1228		1803
1229	if (items > 1)	1804	if (items > 1)
1230	{	1805	{
1231	if (ix)	1806	if (ix)
1232	newprio += coro->prio;	1807	newprio = coro->prio - newprio;
1233		1808
1234	if (newprio < PRIO_MIN) newprio = PRIO_MIN;	1809	if (newprio < PRIO_MIN) newprio = PRIO_MIN;
1235	if (newprio > PRIO_MAX) newprio = PRIO_MAX;	1810	if (newprio > PRIO_MAX) newprio = PRIO_MAX;
1236		1811
1237	coro->prio = newprio;	1812	coro->prio = newprio;
1238	}	1813	}
1239	}	1814	}
		1815	OUTPUT:
		1816	RETVAL
1240		1817
1241	void	1818	SV *
1242	ready (SV *self)	1819	ready (SV *self)
1243	PROTOTYPE: $	1820	PROTOTYPE: $
1244	CODE:	1821	CODE:
1245	api_ready (self);	1822	RETVAL = boolSV (api_ready (self));
		1823	OUTPUT:
		1824	RETVAL
1246		1825
1247	int	1826	int
1248	nready (...)	1827	nready (...)
1249	PROTOTYPE:	1828	PROTOTYPE:
1250	CODE:	1829	CODE:
1251	RETVAL = coro_nready;	1830	RETVAL = coro_nready;
1252	OUTPUT:	1831	OUTPUT:
1253	RETVAL	1832	RETVAL
1254		1833
		1834	void
		1835	throw (Coro::State self, SV *throw = &PL_sv_undef)
		1836	PROTOTYPE: $;$
		1837	CODE:
		1838	SvREFCNT_dec (self->throw);
		1839	self->throw = SvOK (throw) ? newSVsv (throw) : 0;
		1840
		1841	# for async_pool speedup
		1842	void
		1843	_pool_1 (SV *cb)
		1844	CODE:
		1845	{
		1846	struct coro *coro = SvSTATE (coro_current);
		1847	HV hv = (HV )SvRV (coro_current);
		1848	AV *defav = GvAV (PL_defgv);
		1849	SV *invoke = hv_delete (hv, strpair ("_invoke"), 0);
		1850	AV *invoke_av;
		1851	int i, len;
		1852
		1853	if (!invoke)
		1854	croak ("\3async_pool terminate\2\n");
		1855
		1856	SvREFCNT_dec (coro->saved_deffh);
		1857	coro->saved_deffh = SvREFCNT_inc ((SV *)PL_defoutgv);
		1858
		1859	hv_store (hv, "desc", sizeof ("desc") - 1,
		1860	newSVpvn (strpair ("[async_pool]")), 0);
		1861
		1862	invoke_av = (AV *)SvRV (invoke);
		1863	len = av_len (invoke_av);
		1864
		1865	sv_setsv (cb, AvARRAY (invoke_av)[0]);
		1866
		1867	if (len > 0)
		1868	{
		1869	av_fill (defav, len - 1);
		1870	for (i = 0; i < len; ++i)
		1871	av_store (defav, i, SvREFCNT_inc (AvARRAY (invoke_av)[i + 1]));
		1872	}
		1873
		1874	SvREFCNT_dec (invoke);
		1875	}
		1876
		1877	void
		1878	_pool_2 (SV *cb)
		1879	CODE:
		1880	{
		1881	struct coro *coro = SvSTATE (coro_current);
		1882
		1883	sv_setsv (cb, &PL_sv_undef);
		1884
		1885	SvREFCNT_dec ((SV )PL_defoutgv); PL_defoutgv = (GV )coro->saved_deffh;
		1886	coro->saved_deffh = 0;
		1887
		1888	if (coro_rss (aTHX_ coro) > SvIV (sv_pool_rss)
		1889	\|\| av_len (av_async_pool) + 1 >= SvIV (sv_pool_size))
		1890	croak ("\3async_pool terminate\2\n");
		1891
		1892	av_clear (GvAV (PL_defgv));
		1893	hv_store ((HV *)SvRV (coro_current), strpair ("desc"),
		1894	newSVpvn (strpair ("[async_pool idle]")), 0);
		1895
		1896	coro->prio = 0;
		1897
		1898	if (coro->cctx && (coro->cctx->flags & CC_TRACE))
		1899	api_trace (coro_current, 0);
		1900
		1901	av_push (av_async_pool, newSVsv (coro_current));
		1902	}
		1903
		1904
1255	MODULE = Coro::State PACKAGE = Coro::AIO	1905	MODULE = Coro::State PACKAGE = Coro::AIO
1256		1906
1257	SV *	1907	SV *
1258	_get_state ()	1908	_get_state ()
1259	CODE:	1909	CODE:
1260	{	1910	{
1261	struct {	1911	struct io_state *data;
1262	int errorno;
1263	int laststype;
1264	int laststatval;
1265	Stat_t statcache;
1266	} data;
1267		1912
		1913	RETVAL = newSV (sizeof (struct io_state));
		1914	data = (struct io_state *)SvPVX (RETVAL);
		1915	SvCUR_set (RETVAL, sizeof (struct io_state));
		1916	SvPOK_only (RETVAL);
		1917
1268	data.errorno = errno;	1918	data->errorno = errno;
1269	data.laststype = PL_laststype;	1919	data->laststype = PL_laststype;
1270	data.laststatval = PL_laststatval;	1920	data->laststatval = PL_laststatval;
1271	data.statcache = PL_statcache;	1921	data->statcache = PL_statcache;
1272
1273	RETVAL = newSVpvn ((char *)&data, sizeof data);
1274	}	1922	}
1275	OUTPUT:	1923	OUTPUT:
1276	RETVAL	1924	RETVAL
1277		1925
1278	void	1926	void
1279	_set_state (char *data_)	1927	_set_state (char *data_)
1280	PROTOTYPE: $	1928	PROTOTYPE: $
1281	CODE:	1929	CODE:
1282	{	1930	{
1283	struct {	1931	struct io_state data = (void )data_;
1284	int errorno;
1285	int laststype;
1286	int laststatval;
1287	Stat_t statcache;
1288	} data = (void )data_;
1289		1932
1290	errno = data->errorno;	1933	errno = data->errorno;
1291	PL_laststype = data->laststype;	1934	PL_laststype = data->laststype;
1292	PL_laststatval = data->laststatval;	1935	PL_laststatval = data->laststatval;
1293	PL_statcache = data->statcache;	1936	PL_statcache = data->statcache;
1294	}	1937	}
		1938

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Comparing Coro/Coro/State.xs (file contents): Revision 1.106 by root, Mon Nov 27 02:08:55 2006 UTC vs. Revision 1.203 by root, Mon Oct 8 03:02:00 2007 UTC

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Comparing Coro/Coro/State.xs (file contents):
Revision 1.106 by root, Mon Nov 27 02:08:55 2006 UTC vs.
Revision 1.203 by root, Mon Oct 8 03:02:00 2007 UTC