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

Comparing Coro/Coro/State.xs (file contents):
Revision 1.98 by root, Sun Nov 26 21:25:53 2006 UTC vs.
Revision 1.202 by root, Mon Oct 8 02:50:23 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 PERL_VERSION < 6	12	#include <stdio.h>
		13	#include <errno.h>
		14	#include <assert.h>
		15
		16	#ifdef HAVE_MMAP
		17	# include <unistd.h>
		18	# include <sys/mman.h>
		19	# ifndef MAP_ANONYMOUS
		20	# ifdef MAP_ANON
		21	# define MAP_ANONYMOUS MAP_ANON
		22	# else
		23	# undef HAVE_MMAP
		24	# endif
		25	# endif
		26	# include <limits.h>
		27	# ifndef PAGESIZE
		28	# define PAGESIZE pagesize
		29	# define BOOT_PAGESIZE pagesize = sysconf (_SC_PAGESIZE)
		30	static long pagesize;
		31	# else
		32	# define BOOT_PAGESIZE (void)0
		33	# endif
		34	#else
		35	# define PAGESIZE 0
		36	# define BOOT_PAGESIZE (void)0
		37	#endif
		38
		39	#if CORO_USE_VALGRIND
		40	# include <valgrind/valgrind.h>
		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)
10	# ifndef PL_ppaddr	56	# ifndef PL_ppaddr
11	# define PL_ppaddr ppaddr	57	# define PL_ppaddr ppaddr
12	# endif	58	# endif
13	# ifndef call_sv	59	# ifndef call_sv
14	# define call_sv perl_call_sv	60	# define call_sv perl_call_sv
25	# ifndef IS_PADCONST	71	# ifndef IS_PADCONST
26	# define IS_PADCONST(v) 0	72	# define IS_PADCONST(v) 0
27	# endif	73	# endif
28	#endif	74	#endif
29		75
30	#include <stdio.h>	76	/* 5.8.7 */
31	#include <errno.h>	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
32		88
33	#if !__i386 && !__x86_64 && !__powerpc && !__m68k && !__alpha && !__mips && !__sparc64	89	#if !__i386 && !__x86_64 && !__powerpc && !__m68k && !__alpha && !__mips && !__sparc64
34	# undef STACKGUARD	90	# undef CORO_STACKGUARD
35	#endif
36
37	#ifndef STACKGUARD
38	# define STACKGUARD 0
39	#endif
40
41	#ifdef HAVE_MMAP
42	# include <unistd.h>
43	# include <sys/mman.h>
44	# ifndef MAP_ANONYMOUS
45	# ifdef MAP_ANON
46	# define MAP_ANONYMOUS MAP_ANON
47	# else
48	# undef HAVE_MMAP
49	# endif
50	# endif	91	#endif
51	# include <limits.h>	92
52	# ifndef PAGESIZE	93	#ifndef CORO_STACKGUARD
53	# define PAGESIZE pagesize	94	# define CORO_STACKGUARD 0
54	# define BOOT_PAGESIZE pagesize = sysconf (_SC_PAGESIZE)
55	static long pagesize;
56	# else
57	# define BOOT_PAGESIZE
58	# endif	95	#endif
59	#endif
60		96
61	/* The next macro should declare a variable stacklevel that contains and approximation	97	/* prefer perl internal functions over our own? */
62	* to the current C stack pointer. Its property is that it changes with each call	98	#ifndef CORO_PREFER_PERL_FUNCTIONS
63	* and should be unique. */	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. */
64	#define dSTACKLEVEL int stacklevel	104	#define dSTACKLEVEL volatile char stacklevel
65	#define STACKLEVEL ((void *)&stacklevel)	105	#define STACKLEVEL ((void *)&stacklevel)
66		106
67	#define IN_DESTRUCT (PL_main_cv == Nullcv)	107	#define IN_DESTRUCT (PL_main_cv == Nullcv)
68		108
		109	#if __GNUC__ >= 3
		110	# define attribute(x) __attribute__(x)
		111	# define BARRIER __asm__ __volatile__ ("" : : : "memory")
		112	# define expect(expr,value) __builtin_expect ((expr),(value))
		113	#else
		114	# define attribute(x)
		115	# define BARRIER
		116	# define expect(expr,value) (expr)
		117	#endif
		118
		119	#define expect_false(expr) expect ((expr) != 0, 0)
		120	#define expect_true(expr) expect ((expr) != 0, 1)
		121
		122	#define NOINLINE attribute ((noinline))
		123
69	#include "CoroAPI.h"	124	#include "CoroAPI.h"
70
71	#define TRANSFER_SET_STACKLEVEL 0x8bfbfbfb /* magic cookie */
72		125
73	#ifdef USE_ITHREADS	126	#ifdef USE_ITHREADS
74	static perl_mutex coro_mutex;	127	static perl_mutex coro_mutex;
75	# define LOCK do { MUTEX_LOCK (&coro_mutex); } while (0)	128	# define LOCK do { MUTEX_LOCK (&coro_mutex); } while (0)
76	# define UNLOCK do { MUTEX_UNLOCK (&coro_mutex); } while (0)	129	# define UNLOCK do { MUTEX_UNLOCK (&coro_mutex); } while (0)
77	#else	130	#else
78	# define LOCK (void)0	131	# define LOCK (void)0
79	# define UNLOCK (void)0	132	# define UNLOCK (void)0
80	#endif	133	#endif
81		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;
82	static struct CoroAPI coroapi;	147	static struct CoroAPI coroapi;
83	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;
84	static HV coro_state_stash, coro_stash;	150	static HV coro_state_stash, coro_stash;
85	static SV coro_mortal; / will be freed after next transfer */	151	static SV coro_mortal; / will be freed after next transfer */
86		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	};
		176
87	/* this is a structure representing a c-level coroutine */	177	/* this is a structure representing a c-level coroutine */
88	typedef struct coro_stack {	178	typedef struct coro_cctx {
89	struct coro_stack *next;	179	struct coro_cctx *next;
90		180
91	/* the stack */	181	/* the stack */
92	void *sptr;	182	void *sptr;
93	long ssize; /* positive == mmap, otherwise malloc */	183	size_t ssize;
94		184
95	/* cpu state */	185	/* cpu state */
96	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 */
97	JMPENV *top_env;	188	JMPENV *top_env;
98	coro_context cctx;	189	coro_context cctx;
99	} coro_stack;	190
		191	#if CORO_USE_VALGRIND
		192	int valgrind_id;
		193	#endif
		194	unsigned char flags;
		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))
100		216
101	/* this is a structure representing a perl-level coroutine */	217	/* this is a structure representing a perl-level coroutine */
102	struct coro {	218	struct coro {
103	/* the c coroutine allocated to this perl coroutine, if any */	219	/* the c coroutine allocated to this perl coroutine, if any */
104	coro_stack *stack;	220	coro_cctx *cctx;
		221
		222	/* process data */
		223	AV *mainstack;
		224	perl_slots slot; / basically the saved sp */
105		225
106	/* data associated with this coroutine (initial args) */	226	/* data associated with this coroutine (initial args) */
107	AV *args;	227	AV *args;
108	int refcnt;	228	int refcnt;
		229	int flags; /* CF_ flags */
109		230
110	/* optionally saved, might be zero */	231	/* statistics */
111	AV *defav;	232	int usecount; /* number of transfers to this coro */
112	SV *defsv;
113	SV *errsv;
114
115	/* saved global state not related to stacks */
116	U8 dowarn;
117	I32 in_eval;
118
119	/* the stacks and related info (callchain etc..) */
120	PERL_SI *curstackinfo;
121	AV *curstack;
122	AV *mainstack;
123	SV **stack_sp;
124	OP *op;
125	SV **curpad;
126	AV *comppad;
127	CV *compcv;
128	SV **stack_base;
129	SV **stack_max;
130	SV **tmps_stack;
131	I32 tmps_floor;
132	I32 tmps_ix;
133	I32 tmps_max;
134	I32 *markstack;
135	I32 *markstack_ptr;
136	I32 *markstack_max;
137	I32 *scopestack;
138	I32 scopestack_ix;
139	I32 scopestack_max;
140	ANY *savestack;
141	I32 savestack_ix;
142	I32 savestack_max;
143	OP **retstack;
144	I32 retstack_ix;
145	I32 retstack_max;
146	PMOP *curpm;
147	COP *curcop;
148		233
149	/* coro process data */	234	/* coro process data */
150	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 */
151	};	244	};
152		245
153	typedef struct coro *Coro__State;	246	typedef struct coro *Coro__State;
154	typedef struct coro *Coro__State_or_hashref;	247	typedef struct coro *Coro__State_or_hashref;
155		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
156	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 *
157	coro_clone_padlist (CV *cv)	297	coro_clone_padlist (pTHX_ CV *cv)
158	{	298	{
159	AV *padlist = CvPADLIST (cv);	299	AV *padlist = CvPADLIST (cv);
160	AV newpadlist, newpad;	300	AV newpadlist, newpad;
161		301
162	newpadlist = newAV ();	302	newpadlist = newAV ();
163	AvREAL_off (newpadlist);	303	AvREAL_off (newpadlist);
164	#if PERL_VERSION < 9	304	#if PERL_VERSION_ATLEAST (5,9,0)
		305	Perl_pad_push (aTHX_ padlist, AvFILLp (padlist) + 1);
		306	#else
165	Perl_pad_push (aTHX_ padlist, AvFILLp (padlist) + 1, 1);	307	Perl_pad_push (aTHX_ padlist, AvFILLp (padlist) + 1, 1);
166	#else
167	Perl_pad_push (aTHX_ padlist, AvFILLp (padlist) + 1);
168	#endif	308	#endif
169	newpad = (AV *)AvARRAY (padlist)[AvFILLp (padlist)];	309	newpad = (AV *)AvARRAY (padlist)[AvFILLp (padlist)];
170	--AvFILLp (padlist);	310	--AvFILLp (padlist);
171		311
172	av_store (newpadlist, 0, SvREFCNT_inc (*av_fetch (padlist, 0, FALSE)));	312	av_store (newpadlist, 0, SvREFCNT_inc (*av_fetch (padlist, 0, FALSE)));
…		…
174		314
175	return newpadlist;	315	return newpadlist;
176	}	316	}
177		317
178	static void	318	static void
179	free_padlist (AV *padlist)	319	free_padlist (pTHX_ AV *padlist)
180	{	320	{
181	/* may be during global destruction */	321	/* may be during global destruction */
182	if (SvREFCNT (padlist))	322	if (SvREFCNT (padlist))
183	{	323	{
184	I32 i = AvFILLp (padlist);	324	I32 i = AvFILLp (padlist);
…		…
205	AV *padlist;	345	AV *padlist;
206	AV av = (AV )mg->mg_obj;	346	AV av = (AV )mg->mg_obj;
207		347
208	/* casting is fun. */	348	/* casting is fun. */
209	while (&PL_sv_undef != (SV )(padlist = (AV )av_pop (av)))	349	while (&PL_sv_undef != (SV )(padlist = (AV )av_pop (av)))
210	free_padlist (padlist);	350	free_padlist (aTHX_ padlist);
211		351
212	SvREFCNT_dec (av);	352	SvREFCNT_dec (av);
213		353
214	return 0;	354	return 0;
215	}	355	}
216		356
217	#define PERL_MAGIC_coro PERL_MAGIC_ext	357	#define PERL_MAGIC_coro PERL_MAGIC_ext
218		358
219	static MGVTBL vtbl_coro = {0, 0, 0, 0, coro_cv_free};	359	static MGVTBL vtbl_coro = {0, 0, 0, 0, coro_cv_free};
220		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
221	/* the next two functions merely cache the padlists */	394	/* the next two functions merely cache the padlists */
222	static void	395	static void
223	get_padlist (CV *cv)	396	get_padlist (pTHX_ CV *cv)
224	{	397	{
225	MAGIC mg = mg_find ((SV )cv, PERL_MAGIC_coro);	398	MAGIC *mg = CORO_MAGIC (cv);
		399	AV *av;
226		400
227	if (mg && AvFILLp ((AV *)mg->mg_obj) >= 0)	401	if (expect_true (mg && AvFILLp ((av = (AV *)mg->mg_obj)) >= 0))
228	CvPADLIST (cv) = (AV )av_pop ((AV )mg->mg_obj);	402	CvPADLIST (cv) = (AV *)AvARRAY (av)[AvFILLp (av)--];
229	else	403	else
230	{	404	{
231	#if 0	405	#if CORO_PREFER_PERL_FUNCTIONS
232	/* this is probably cleaner, but also slower? */	406	/* this is probably cleaner, but also slower? */
233	CV *cp = Perl_cv_clone (cv);	407	CV *cp = Perl_cv_clone (cv);
234	CvPADLIST (cv) = CvPADLIST (cp);	408	CvPADLIST (cv) = CvPADLIST (cp);
235	CvPADLIST (cp) = 0;	409	CvPADLIST (cp) = 0;
236	SvREFCNT_dec (cp);	410	SvREFCNT_dec (cp);
237	#else	411	#else
238	CvPADLIST (cv) = coro_clone_padlist (cv);	412	CvPADLIST (cv) = coro_clone_padlist (aTHX_ cv);
239	#endif	413	#endif
240	}	414	}
241	}	415	}
242		416
243	static void	417	static void
244	put_padlist (CV *cv)	418	put_padlist (pTHX_ CV *cv)
245	{	419	{
246	MAGIC mg = mg_find ((SV )cv, PERL_MAGIC_coro);	420	MAGIC *mg = CORO_MAGIC (cv);
		421	AV *av;
247		422
248	if (!mg)	423	if (expect_false (!mg))
249	{	424	{
250	sv_magic ((SV *)cv, 0, PERL_MAGIC_coro, 0, 0);	425	sv_magic ((SV *)cv, 0, PERL_MAGIC_coro, 0, 0);
251	mg = mg_find ((SV *)cv, PERL_MAGIC_coro);	426	mg = mg_find ((SV *)cv, PERL_MAGIC_coro);
252	mg->mg_virtual = &vtbl_coro;	427	mg->mg_virtual = &vtbl_coro;
253	mg->mg_obj = (SV *)newAV ();	428	mg->mg_obj = (SV *)newAV ();
254	}	429	}
255		430
256	av_push ((AV )mg->mg_obj, (SV )CvPADLIST (cv));	431	av = (AV *)mg->mg_obj;
257	}
258		432
259	#define SB do {	433	if (expect_false (AvFILLp (av) >= AvMAX (av)))
260	#define SE } while (0)	434	av_extend (av, AvMAX (av) + 1);
261		435
262	#define LOAD(state) load_state((state));	436	AvARRAY (av)[++AvFILLp (av)] = (SV *)CvPADLIST (cv);
263	#define SAVE(state,flags) save_state((state),(flags));	437	}
264		438
265	#define REPLACE_SV(sv,val) SB SvREFCNT_dec(sv); (sv) = (val); (val) = 0; SE	439	/ load & save, init *****************************************************/
266		440
267	static void	441	static void
268	load_state(Coro__State c)	442	load_perl (pTHX_ Coro__State c)
269	{	443	{
270	PL_dowarn = c->dowarn;	444	perl_slots *slot = c->slot;
271	PL_in_eval = c->in_eval;	445	c->slot = 0;
272		446
273	PL_curstackinfo = c->curstackinfo;
274	PL_curstack = c->curstack;
275	PL_mainstack = c->mainstack;	447	PL_mainstack = c->mainstack;
276	PL_stack_sp = c->stack_sp;
277	PL_op = c->op;
278	PL_curpad = c->curpad;
279	PL_comppad = c->comppad;
280	PL_compcv = c->compcv;
281	PL_stack_base = c->stack_base;
282	PL_stack_max = c->stack_max;
283	PL_tmps_stack = c->tmps_stack;
284	PL_tmps_floor = c->tmps_floor;
285	PL_tmps_ix = c->tmps_ix;
286	PL_tmps_max = c->tmps_max;
287	PL_markstack = c->markstack;
288	PL_markstack_ptr = c->markstack_ptr;
289	PL_markstack_max = c->markstack_max;
290	PL_scopestack = c->scopestack;
291	PL_scopestack_ix = c->scopestack_ix;
292	PL_scopestack_max = c->scopestack_max;
293	PL_savestack = c->savestack;
294	PL_savestack_ix = c->savestack_ix;
295	PL_savestack_max = c->savestack_max;
296	#if PERL_VERSION < 9
297	PL_retstack = c->retstack;
298	PL_retstack_ix = c->retstack_ix;
299	PL_retstack_max = c->retstack_max;
300	#endif
301	PL_curpm = c->curpm;
302	PL_curcop = c->curcop;
303		448
304	if (c->defav) REPLACE_SV (GvAV (PL_defgv), c->defav);	449	GvSV (PL_defgv) = slot->defsv;
305	if (c->defsv) REPLACE_SV (DEFSV , c->defsv);	450	GvAV (PL_defgv) = slot->defav;
306	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
		457
		458	/hv_store (hv_sig, strpair ("__DIE__" ), SvREFCNT_inc (sv_diehook ), 0);/
		459	/hv_store (hv_sig, strpair ("__WARN__"), SvREFCNT_inc (sv_warnhook), 0);/
307		460
308	{	461	{
309	dSP;	462	dSP;
		463
310	CV *cv;	464	CV *cv;
311		465
312	/* now do the ugly restore mess */	466	/* now do the ugly restore mess */
313	while ((cv = (CV *)POPs))	467	while (expect_true (cv = (CV *)POPs))
314	{	468	{
315	AV padlist = (AV )POPs;
316
317	if (padlist)
318	{
319	put_padlist (cv); /* mark this padlist as available */	469	put_padlist (aTHX_ cv); /* mark this padlist as available */
320	CvPADLIST(cv) = padlist;	470	CvDEPTH (cv) = PTR2IV (POPs);
321	}	471	CvPADLIST (cv) = (AV *)POPs;
322
323	++CvDEPTH(cv);
324	}	472	}
325		473
326	PUTBACK;	474	PUTBACK;
327	}	475	}
328	}	476	}
329		477
330	static void	478	static void
331	save_state(Coro__State c, int flags)	479	save_perl (pTHX_ Coro__State c)
332	{	480	{
333	{	481	{
334	dSP;	482	dSP;
335	I32 cxix = cxstack_ix;	483	I32 cxix = cxstack_ix;
336	PERL_CONTEXT *ccstk = cxstack;	484	PERL_CONTEXT *ccstk = cxstack;
…		…
339	/*	487	/*
340	* the worst thing you can imagine happens first - we have to save	488	* the worst thing you can imagine happens first - we have to save
341	* (and reinitialize) all cv's in the whole callchain :(	489	* (and reinitialize) all cv's in the whole callchain :(
342	*/	490	*/
343		491
344	PUSHs (Nullsv);	492	XPUSHs (Nullsv);
345	/* this loop was inspired by pp_caller */	493	/* this loop was inspired by pp_caller */
346	for (;;)	494	for (;;)
347	{	495	{
348	while (cxix >= 0)	496	while (expect_true (cxix >= 0))
349	{	497	{
350	PERL_CONTEXT *cx = &ccstk[cxix--];	498	PERL_CONTEXT *cx = &ccstk[cxix--];
351		499
352	if (CxTYPE(cx) == CXt_SUB)	500	if (expect_true (CxTYPE (cx) == CXt_SUB \|\| CxTYPE (cx) == CXt_FORMAT))
353	{	501	{
354	CV *cv = cx->blk_sub.cv;	502	CV *cv = cx->blk_sub.cv;
		503
355	if (CvDEPTH(cv))	504	if (expect_true (CvDEPTH (cv)))
356	{	505	{
357	EXTEND (SP, CvDEPTH(cv)*2);	506	EXTEND (SP, 3);
358
359	while (--CvDEPTH(cv))
360	{
361	/* this tells the restore code to increment CvDEPTH */
362	PUSHs (Nullsv);
363	PUSHs ((SV *)cv);
364	}
365
366	PUSHs ((SV *)CvPADLIST(cv));	507	PUSHs ((SV *)CvPADLIST (cv));
		508	PUSHs (INT2PTR (SV *, CvDEPTH (cv)));
367	PUSHs ((SV *)cv);	509	PUSHs ((SV *)cv);
368		510
		511	CvDEPTH (cv) = 0;
369	get_padlist (cv);	512	get_padlist (aTHX_ cv);
370	}	513	}
371	}	514	}
372	#ifdef CXt_FORMAT
373	else if (CxTYPE(cx) == CXt_FORMAT)
374	{
375	/* I never used formats, so how should I know how these are implemented? */
376	/* my bold guess is as a simple, plain sub... */
377	croak ("CXt_FORMAT not yet handled. Don't switch coroutines from within formats");
378	}
379	#endif
380	}	515	}
381		516
382	if (top_si->si_type == PERLSI_MAIN)	517	if (expect_true (top_si->si_type == PERLSI_MAIN))
383	break;	518	break;
384		519
385	top_si = top_si->si_prev;	520	top_si = top_si->si_prev;
386	ccstk = top_si->si_cxstack;	521	ccstk = top_si->si_cxstack;
387	cxix = top_si->si_cxix;	522	cxix = top_si->si_cxix;
388	}	523	}
389		524
390	PUTBACK;	525	PUTBACK;
391	}	526	}
392		527
393	c->defav = flags & TRANSFER_SAVE_DEFAV ? (AV *)SvREFCNT_inc (GvAV (PL_defgv)) : 0;	528	/* allocate some space on the context stack for our purposes */
394	c->defsv = flags & TRANSFER_SAVE_DEFSV ? SvREFCNT_inc (DEFSV) : 0;	529	/* we manually unroll here, as usually 2 slots is enough */
395	c->errsv = flags & TRANSFER_SAVE_ERRSV ? SvREFCNT_inc (ERRSV) : 0;	530	if (SLOT_COUNT >= 1) CXINC;
		531	if (SLOT_COUNT >= 2) CXINC;
		532	if (SLOT_COUNT >= 3) CXINC;
		533	{
		534	int i;
		535	for (i = 3; i < SLOT_COUNT; ++i)
		536	CXINC;
		537	}
		538	cxstack_ix -= SLOT_COUNT; /* undo allocation */
396		539
397	c->dowarn = PL_dowarn;
398	c->in_eval = PL_in_eval;
399
400	c->curstackinfo = PL_curstackinfo;
401	c->curstack = PL_curstack;
402	c->mainstack = PL_mainstack;	540	c->mainstack = PL_mainstack;
403	c->stack_sp = PL_stack_sp;	541
404	c->op = PL_op;	542	{
405	c->curpad = PL_curpad;	543	perl_slots slot = c->slot = (perl_slots )(cxstack + cxstack_ix + 1);
406	c->comppad = PL_comppad;	544
407	c->compcv = PL_compcv;	545	slot->defav = GvAV (PL_defgv);
408	c->stack_base = PL_stack_base;	546	slot->defsv = DEFSV;
409	c->stack_max = PL_stack_max;	547	slot->errsv = ERRSV;
410	c->tmps_stack = PL_tmps_stack;	548	slot->irsgv = GvSV (irsgv);
411	c->tmps_floor = PL_tmps_floor;	549
412	c->tmps_ix = PL_tmps_ix;	550	#define VAR(name,type) slot->name = PL_ ## name;
413	c->tmps_max = PL_tmps_max;	551	# include "state.h"
414	c->markstack = PL_markstack;	552	#undef VAR
415	c->markstack_ptr = PL_markstack_ptr;	553	}
416	c->markstack_max = PL_markstack_max;
417	c->scopestack = PL_scopestack;
418	c->scopestack_ix = PL_scopestack_ix;
419	c->scopestack_max = PL_scopestack_max;
420	c->savestack = PL_savestack;
421	c->savestack_ix = PL_savestack_ix;
422	c->savestack_max = PL_savestack_max;
423	#if PERL_VERSION < 9
424	c->retstack = PL_retstack;
425	c->retstack_ix = PL_retstack_ix;
426	c->retstack_max = PL_retstack_max;
427	#endif
428	c->curpm = PL_curpm;
429	c->curcop = PL_curcop;
430	}	554	}
431		555
432	/*	556	/*
433	* allocate various perl stacks. This is an exact copy	557	* allocate various perl stacks. This is an exact copy
434	* of perl.c:init_stacks, except that it uses less memory	558	* of perl.c:init_stacks, except that it uses less memory
435	* on the (sometimes correct) assumption that coroutines do	559	* on the (sometimes correct) assumption that coroutines do
436	* not usually need a lot of stackspace.	560	* not usually need a lot of stackspace.
437	*/	561	*/
		562	#if 1
		563	# define coro_init_stacks init_stacks
		564	#else
438	static void	565	static void
439	coro_init_stacks ()	566	coro_init_stacks (pTHX)
440	{	567	{
441	LOCK;	568	PL_curstackinfo = new_stackinfo(32, 8);
442
443	PL_curstackinfo = new_stackinfo(96, 1024/sizeof(PERL_CONTEXT) - 1);
444	PL_curstackinfo->si_type = PERLSI_MAIN;	569	PL_curstackinfo->si_type = PERLSI_MAIN;
445	PL_curstack = PL_curstackinfo->si_stack;	570	PL_curstack = PL_curstackinfo->si_stack;
446	PL_mainstack = PL_curstack; /* remember in case we switch stacks */	571	PL_mainstack = PL_curstack; /* remember in case we switch stacks */
447		572
448	PL_stack_base = AvARRAY(PL_curstack);	573	PL_stack_base = AvARRAY(PL_curstack);
449	PL_stack_sp = PL_stack_base;	574	PL_stack_sp = PL_stack_base;
450	PL_stack_max = PL_stack_base + AvMAX(PL_curstack);	575	PL_stack_max = PL_stack_base + AvMAX(PL_curstack);
451		576
452	New(50,PL_tmps_stack,96,SV*);	577	New(50,PL_tmps_stack,32,SV*);
453	PL_tmps_floor = -1;	578	PL_tmps_floor = -1;
454	PL_tmps_ix = -1;	579	PL_tmps_ix = -1;
455	PL_tmps_max = 96;	580	PL_tmps_max = 32;
456		581
457	New(54,PL_markstack,16,I32);	582	New(54,PL_markstack,16,I32);
458	PL_markstack_ptr = PL_markstack;	583	PL_markstack_ptr = PL_markstack;
459	PL_markstack_max = PL_markstack + 16;	584	PL_markstack_max = PL_markstack + 16;
460		585
461	#ifdef SET_MARK_OFFSET	586	#ifdef SET_MARK_OFFSET
462	SET_MARK_OFFSET;	587	SET_MARK_OFFSET;
463	#endif	588	#endif
464		589
465	New(54,PL_scopestack,16,I32);	590	New(54,PL_scopestack,8,I32);
466	PL_scopestack_ix = 0;	591	PL_scopestack_ix = 0;
467	PL_scopestack_max = 16;	592	PL_scopestack_max = 8;
468		593
469	New(54,PL_savestack,96,ANY);	594	New(54,PL_savestack,24,ANY);
470	PL_savestack_ix = 0;	595	PL_savestack_ix = 0;
471	PL_savestack_max = 96;	596	PL_savestack_max = 24;
472		597
473	#if PERL_VERSION < 9	598	#if !PERL_VERSION_ATLEAST (5,9,0)
474	New(54,PL_retstack,8,OP*);	599	New(54,PL_retstack,4,OP*);
475	PL_retstack_ix = 0;	600	PL_retstack_ix = 0;
476	PL_retstack_max = 8;	601	PL_retstack_max = 4;
477	#endif	602	#endif
478
479	UNLOCK;
480	}	603	}
		604	#endif
481		605
482	/*	606	/*
483	* destroy the stacks, the callchain etc...	607	* destroy the stacks, the callchain etc...
484	*/	608	*/
485	static void	609	static void
486	destroy_stacks()	610	coro_destroy_stacks (pTHX)
487	{	611	{
488	if (!IN_DESTRUCT)
489	{
490	/* is this ugly, I ask? */
491	LEAVE_SCOPE (0);
492
493	/* sure it is, but more important: is it correct?? :/ */
494	FREETMPS;
495
496	/POPSTACK_TO (PL_mainstack);//D//use/
497	}
498
499	while (PL_curstackinfo->si_next)	612	while (PL_curstackinfo->si_next)
500	PL_curstackinfo = PL_curstackinfo->si_next;	613	PL_curstackinfo = PL_curstackinfo->si_next;
501		614
502	while (PL_curstackinfo)	615	while (PL_curstackinfo)
503	{	616	{
504	PERL_SI *p = PL_curstackinfo->si_prev;	617	PERL_SI *p = PL_curstackinfo->si_prev;
505		618
506	{ /D//remove/
507	dSP;
508	SWITCHSTACK (PL_curstack, PL_curstackinfo->si_stack);
509	PUTBACK; /* possibly superfluous */
510	}
511
512	if (!IN_DESTRUCT)	619	if (!IN_DESTRUCT)
513	{
514	dounwind (-1);/D//remove/
515	SvREFCNT_dec (PL_curstackinfo->si_stack);	620	SvREFCNT_dec (PL_curstackinfo->si_stack);
516	}
517		621
518	Safefree (PL_curstackinfo->si_cxstack);	622	Safefree (PL_curstackinfo->si_cxstack);
519	Safefree (PL_curstackinfo);	623	Safefree (PL_curstackinfo);
520	PL_curstackinfo = p;	624	PL_curstackinfo = p;
521	}	625	}
522		626
523	Safefree (PL_tmps_stack);	627	Safefree (PL_tmps_stack);
524	Safefree (PL_markstack);	628	Safefree (PL_markstack);
525	Safefree (PL_scopestack);	629	Safefree (PL_scopestack);
526	Safefree (PL_savestack);	630	Safefree (PL_savestack);
527	#if PERL_VERSION < 9	631	#if !PERL_VERSION_ATLEAST (5,9,0)
528	Safefree (PL_retstack);	632	Safefree (PL_retstack);
529	#endif	633	#endif
530	}	634	}
531		635
532	static void	636	static size_t
533	setup_coro (struct coro *coro)	637	coro_rss (pTHX_ struct coro *coro)
		638	{
		639	size_t rss = sizeof (*coro);
		640
		641	if (coro->mainstack)
		642	{
		643	perl_slots tmp_slot;
		644	perl_slots *slot;
		645
		646	if (coro->flags & CF_RUNNING)
		647	{
		648	slot = &tmp_slot;
		649
		650	#define VAR(name,type) slot->name = PL_ ## name;
		651	# include "state.h"
		652	#undef VAR
		653	}
		654	else
		655	slot = coro->slot;
		656
		657	rss += sizeof (slot->curstackinfo);
		658	rss += (slot->curstackinfo->si_cxmax + 1) * sizeof (PERL_CONTEXT);
		659	rss += sizeof (SV) + sizeof (struct xpvav) + (1 + AvMAX (slot->curstack)) * sizeof (SV *);
		660	rss += slot->tmps_max * sizeof (SV *);
		661	rss += (slot->markstack_max - slot->markstack_ptr) * sizeof (I32);
		662	rss += slot->scopestack_max * sizeof (I32);
		663	rss += slot->savestack_max * sizeof (ANY);
		664
		665	#if !PERL_VERSION_ATLEAST (5,9,0)
		666	rss += slot->retstack_max * sizeof (OP *);
		667	#endif
		668	}
		669
		670	return rss;
		671	}
		672
		673	/ coroutine stack handling **********************************************/
		674
		675	static void
		676	coro_setup (pTHX_ struct coro *coro)
534	{	677	{
535	/*	678	/*
536	* emulate part of the perl startup here.	679	* emulate part of the perl startup here.
537	*/	680	*/
538	dTHX;	681	coro_init_stacks (aTHX);
		682
		683	PL_runops = RUNOPS_DEFAULT;
		684	PL_curcop = &PL_compiling;
		685	PL_in_eval = EVAL_NULL;
		686	PL_comppad = 0;
		687	PL_curpm = 0;
		688	PL_curpad = 0;
		689	PL_localizing = 0;
		690	PL_dirty = 0;
		691	PL_restartop = 0;
		692	PL_diehook = 0; hv_store (hv_sig, strpair ("__DIE__" ), SvREFCNT_inc (sv_diehook ), 0);
		693	PL_warnhook = 0; hv_store (hv_sig, strpair ("__WARN__"), SvREFCNT_inc (sv_warnhook), 0);
		694
		695	GvSV (PL_defgv) = newSV (0);
		696	GvAV (PL_defgv) = coro->args; coro->args = 0;
		697	GvSV (PL_errgv) = newSV (0);
		698	GvSV (irsgv) = newSVpvn ("\n", 1); sv_magic (GvSV (irsgv), (SV *)irsgv, PERL_MAGIC_sv, "/", 0);
		699	PL_rs = newSVsv (GvSV (irsgv));
		700	PL_defoutgv = (GV *)SvREFCNT_inc (stdoutgv);
		701
		702	{
		703	dSP;
		704	LOGOP myop;
		705
		706	Zero (&myop, 1, LOGOP);
		707	myop.op_next = Nullop;
		708	myop.op_flags = OPf_WANT_VOID;
		709
		710	PUSHMARK (SP);
		711	XPUSHs (sv_2mortal (av_shift (GvAV (PL_defgv))));
		712	PUTBACK;
		713	PL_op = (OP *)&myop;
		714	PL_op = PL_ppaddr[OP_ENTERSUB](aTHX);
		715	SPAGAIN;
		716	}
		717
		718	ENTER; /* necessary e.g. for dounwind and to balance the xsub-entersub */
		719	}
		720
		721	static void
		722	coro_destroy (pTHX_ struct coro *coro)
		723	{
		724	if (!IN_DESTRUCT)
		725	{
		726	/* restore all saved variables and stuff */
		727	LEAVE_SCOPE (0);
		728	assert (PL_tmps_floor == -1);
		729
		730	/* free all temporaries */
		731	FREETMPS;
		732	assert (PL_tmps_ix == -1);
		733
		734	/* unwind all extra stacks */
		735	POPSTACK_TO (PL_mainstack);
		736
		737	/* unwind main stack */
		738	dounwind (-1);
		739	}
		740
		741	SvREFCNT_dec (GvSV (PL_defgv));
		742	SvREFCNT_dec (GvAV (PL_defgv));
		743	SvREFCNT_dec (GvSV (PL_errgv));
		744	SvREFCNT_dec (PL_defoutgv);
		745	SvREFCNT_dec (PL_rs);
		746	SvREFCNT_dec (GvSV (irsgv));
		747
		748	SvREFCNT_dec (PL_diehook);
		749	SvREFCNT_dec (PL_warnhook);
		750
		751	SvREFCNT_dec (coro->saved_deffh);
		752	SvREFCNT_dec (coro->throw);
		753
		754	coro_destroy_stacks (aTHX);
		755	}
		756
		757	static void
		758	free_coro_mortal (pTHX)
		759	{
		760	if (expect_true (coro_mortal))
		761	{
		762	SvREFCNT_dec (coro_mortal);
		763	coro_mortal = 0;
		764	}
		765	}
		766
		767	static int
		768	runops_trace (pTHX)
		769	{
		770	COP *oldcop = 0;
		771	int oldcxix = -2;
		772	struct coro coro = SvSTATE (coro_current); / trace cctx is tied to specific coro */
		773	coro_cctx *cctx = coro->cctx;
		774
		775	while ((PL_op = CALL_FPTR (PL_op->op_ppaddr) (aTHX)))
		776	{
		777	PERL_ASYNC_CHECK ();
		778
		779	if (cctx->flags & CC_TRACE_ALL)
		780	{
		781	if (PL_op->op_type == OP_LEAVESUB && cctx->flags & CC_TRACE_SUB)
		782	{
		783	PERL_CONTEXT *cx = &cxstack[cxstack_ix];
		784	SV bot, top;
		785	AV av = newAV (); / return values */
		786	SV **cb;
		787	dSP;
		788
		789	GV *gv = CvGV (cx->blk_sub.cv);
		790	SV *fullname = sv_2mortal (newSV (0));
		791	if (isGV (gv))
		792	gv_efullname3 (fullname, gv, 0);
		793
		794	bot = PL_stack_base + cx->blk_oldsp + 1;
		795	top = cx->blk_gimme == G_ARRAY ? SP + 1
		796	: cx->blk_gimme == G_SCALAR ? bot + 1
		797	: bot;
		798
		799	av_extend (av, top - bot);
		800	while (bot < top)
		801	av_push (av, SvREFCNT_inc (*bot++));
		802
		803	PL_runops = RUNOPS_DEFAULT;
		804	ENTER;
		805	SAVETMPS;
		806	EXTEND (SP, 3);
		807	PUSHMARK (SP);
		808	PUSHs (&PL_sv_no);
		809	PUSHs (fullname);
		810	PUSHs (sv_2mortal (newRV_noinc ((SV *)av)));
		811	PUTBACK;
		812	cb = hv_fetch ((HV *)SvRV (coro_current), strpair ("_trace_sub_cb"), 0);
		813	if (cb) call_sv (*cb, G_KEEPERR \| G_EVAL \| G_VOID \| G_DISCARD);
		814	SPAGAIN;
		815	FREETMPS;
		816	LEAVE;
		817	PL_runops = runops_trace;
		818	}
		819
		820	if (oldcop != PL_curcop)
		821	{
		822	oldcop = PL_curcop;
		823
		824	if (PL_curcop != &PL_compiling)
		825	{
		826	SV **cb;
		827
		828	if (oldcxix != cxstack_ix && cctx->flags & CC_TRACE_SUB)
		829	{
		830	PERL_CONTEXT *cx = &cxstack[cxstack_ix];
		831
		832	if (CxTYPE (cx) == CXt_SUB && oldcxix < cxstack_ix)
		833	{
		834	runops_proc_t old_runops = PL_runops;
		835	dSP;
		836	GV *gv = CvGV (cx->blk_sub.cv);
		837	SV *fullname = sv_2mortal (newSV (0));
		838
		839	if (isGV (gv))
		840	gv_efullname3 (fullname, gv, 0);
		841
		842	PL_runops = RUNOPS_DEFAULT;
		843	ENTER;
		844	SAVETMPS;
		845	EXTEND (SP, 3);
		846	PUSHMARK (SP);
		847	PUSHs (&PL_sv_yes);
		848	PUSHs (fullname);
		849	PUSHs (cx->blk_sub.hasargs ? sv_2mortal (newRV_inc ((SV *)cx->blk_sub.argarray)) : &PL_sv_undef);
		850	PUTBACK;
		851	cb = hv_fetch ((HV *)SvRV (coro_current), strpair ("_trace_sub_cb"), 0);
		852	if (cb) call_sv (*cb, G_KEEPERR \| G_EVAL \| G_VOID \| G_DISCARD);
		853	SPAGAIN;
		854	FREETMPS;
		855	LEAVE;
		856	PL_runops = runops_trace;
		857	}
		858
		859	oldcxix = cxstack_ix;
		860	}
		861
		862	if (cctx->flags & CC_TRACE_LINE)
		863	{
		864	dSP;
		865
		866	PL_runops = RUNOPS_DEFAULT;
		867	ENTER;
		868	SAVETMPS;
		869	EXTEND (SP, 3);
		870	PL_runops = RUNOPS_DEFAULT;
		871	PUSHMARK (SP);
		872	PUSHs (sv_2mortal (newSVpv (OutCopFILE (oldcop), 0)));
		873	PUSHs (sv_2mortal (newSViv (CopLINE (oldcop))));
		874	PUTBACK;
		875	cb = hv_fetch ((HV *)SvRV (coro_current), strpair ("_trace_line_cb"), 0);
		876	if (cb) call_sv (*cb, G_KEEPERR \| G_EVAL \| G_VOID \| G_DISCARD);
		877	SPAGAIN;
		878	FREETMPS;
		879	LEAVE;
		880	PL_runops = runops_trace;
		881	}
		882	}
		883	}
		884	}
		885	}
		886
		887	TAINT_NOT;
		888	return 0;
		889	}
		890
		891	/* inject a fake call to Coro::State::_cctx_init into the execution */
		892	/* _cctx_init should be careful, as it could be called at almost any time */
		893	/* during execution of a perl program */
		894	static void NOINLINE
		895	cctx_prepare (pTHX_ coro_cctx *cctx)
		896	{
539	dSP;	897	dSP;
540	UNOP myop;	898	LOGOP myop;
541	SV sub_init = (SV )get_cv ("Coro::State::coro_init", FALSE);
542		899
543	coro_init_stacks ();	900	PL_top_env = &PL_start_env;
544	/PL_curcop = 0;/
545	/PL_in_eval = PL_in_eval;/ /* inherit */
546	SvREFCNT_dec (GvAV (PL_defgv));
547	GvAV (PL_defgv) = coro->args; coro->args = 0;
548		901
549	SPAGAIN;	902	if (cctx->flags & CC_TRACE)
		903	PL_runops = runops_trace;
550		904
551	Zero (&myop, 1, UNOP);	905	Zero (&myop, 1, LOGOP);
552	myop.op_next = Nullop;	906	myop.op_next = PL_op;
553	myop.op_flags = OPf_WANT_VOID;	907	myop.op_flags = OPf_WANT_VOID \| OPf_STACKED;
554		908
		909	PUSHMARK (SP);
		910	EXTEND (SP, 2);
		911	PUSHs (sv_2mortal (newSViv (PTR2IV (cctx))));
		912	PUSHs ((SV *)get_cv ("Coro::State::_cctx_init", FALSE));
		913	PUTBACK;
555	PL_op = (OP *)&myop;	914	PL_op = (OP *)&myop;
556
557	PUSHMARK(SP);
558	XPUSHs (sub_init);
559	PUTBACK;
560	PL_op = PL_ppaddr[OP_ENTERSUB](aTHX);	915	PL_op = PL_ppaddr[OP_ENTERSUB](aTHX);
561	SPAGAIN;	916	SPAGAIN;
562
563	ENTER; /* necessary e.g. for dounwind */
564	}	917	}
565		918
		919	/*
		920	* this is a _very_ stripped down perl interpreter ;)
		921	*/
566	static void	922	static void
567	free_coro_mortal ()
568	{
569	if (coro_mortal)
570	{
571	SvREFCNT_dec (coro_mortal);
572	coro_mortal = 0;
573	}
574	}
575
576	static void
577	coro_run (void *arg)	923	cctx_run (void *arg)
578	{	924	{
		925	dTHX;
		926
		927	/* cctx_run is the alternative tail of transfer(), so unlock here. */
		928	UNLOCK;
		929
		930	/* we now skip the entersub that lead to transfer() */
		931	PL_op = PL_op->op_next;
		932
		933	/* inject a fake subroutine call to cctx_init */
		934	cctx_prepare (aTHX_ (coro_cctx *)arg);
		935
		936	/* somebody or something will hit me for both perl_run and PL_restartop */
		937	PL_restartop = PL_op;
		938	perl_run (PL_curinterp);
		939
579	/*	940	/*
580	* this is a _very_ stripped down perl interpreter ;)	941	* If perl-run returns we assume exit() was being called or the coro
		942	* fell off the end, which seems to be the only valid (non-bug)
		943	* reason for perl_run to return. We try to exit by jumping to the
		944	* bootstrap-time "top" top_env, as we cannot restore the "main"
		945	* coroutine as Coro has no such concept
581	*/	946	*/
582	dTHX;
583	int ret;
584
585	UNLOCK;
586
587	PL_top_env = &PL_start_env;	947	PL_top_env = main_top_env;
588		948	JMPENV_JUMP (2); /* I do not feel well about the hardcoded 2 at all */
589	sv_setiv (get_sv ("Coro::State::cctx_stack", FALSE), PTR2IV ((coro_stack *)arg));
590	sv_setiv (get_sv ("Coro::State::cctx_restartop", FALSE), PTR2IV (PL_op));
591
592	/* continue at cctx_init, without entersub */
593	PL_restartop = CvSTART (get_cv ("Coro::State::cctx_init", FALSE));
594
595	/* somebody will hit me for both perl_run and PL_restartop */
596	ret = perl_run (PERL_GET_CONTEXT);
597	printf ("ret %d\n", ret);//D
598
599	fputs ("FATAL: C coroutine fell over the edge of the world, aborting.\n", stderr);
600	abort ();
601	}	949	}
602		950
603	static coro_stack *	951	static coro_cctx *
604	stack_new ()	952	cctx_new ()
605	{	953	{
606	coro_stack *stack;	954	coro_cctx *cctx;
		955	void *stack_start;
		956	size_t stack_size;
607		957
		958	++cctx_count;
		959
608	New (0, stack, 1, coro_stack);	960	Newz (0, cctx, 1, coro_cctx);
609		961
610	#if HAVE_MMAP	962	#if HAVE_MMAP
611
612	stack->ssize = ((STACKSIZE * sizeof (long) + PAGESIZE - 1) / PAGESIZE + STACKGUARD) * PAGESIZE;	963	cctx->ssize = ((coro_stacksize * sizeof (long) + PAGESIZE - 1) / PAGESIZE + CORO_STACKGUARD) * PAGESIZE;
613	/* mmap suppsedly does allocate-on-write for us */	964	/* mmap supposedly does allocate-on-write for us */
614	stack->sptr = mmap (0, stack->ssize, PROT_EXEC\|PROT_READ\|PROT_WRITE, MAP_PRIVATE\|MAP_ANONYMOUS, 0, 0);	965	cctx->sptr = mmap (0, cctx->ssize, PROT_EXEC\|PROT_READ\|PROT_WRITE, MAP_PRIVATE\|MAP_ANONYMOUS, 0, 0);
615		966
616	if (stack->sptr == (void *)-1)	967	if (cctx->sptr != (void *)-1)
617	{
618	perror ("FATAL: unable to mmap stack for coroutine");
619	_exit (EXIT_FAILURE);
620	}	968	{
621
622	# if STACKGUARD	969	# if CORO_STACKGUARD
623	mprotect (stack->sptr, STACKGUARD * PAGESIZE, PROT_NONE);	970	mprotect (cctx->sptr, CORO_STACKGUARD * PAGESIZE, PROT_NONE);
624	# endif	971	# endif
		972	stack_start = CORO_STACKGUARD * PAGESIZE + (char *)cctx->sptr;
		973	stack_size = cctx->ssize - CORO_STACKGUARD * PAGESIZE;
		974	cctx->flags \|= CC_MAPPED;
		975	}
		976	else
		977	#endif
		978	{
		979	cctx->ssize = coro_stacksize * (long)sizeof (long);
		980	New (0, cctx->sptr, coro_stacksize, long);
625		981
		982	if (!cctx->sptr)
		983	{
		984	perror ("FATAL: unable to allocate stack for coroutine");
		985	_exit (EXIT_FAILURE);
		986	}
		987
		988	stack_start = cctx->sptr;
		989	stack_size = cctx->ssize;
		990	}
		991
		992	REGISTER_STACK (cctx, (char )stack_start, (char )stack_start + stack_size);
		993	coro_create (&cctx->cctx, cctx_run, (void *)cctx, stack_start, stack_size);
		994
		995	return cctx;
		996	}
		997
		998	static void
		999	cctx_destroy (coro_cctx *cctx)
		1000	{
		1001	if (!cctx)
		1002	return;
		1003
		1004	--cctx_count;
		1005
		1006	#if CORO_USE_VALGRIND
		1007	VALGRIND_STACK_DEREGISTER (cctx->valgrind_id);
		1008	#endif
		1009
		1010	#if HAVE_MMAP
		1011	if (cctx->flags & CC_MAPPED)
		1012	munmap (cctx->sptr, cctx->ssize);
		1013	else
		1014	#endif
		1015	Safefree (cctx->sptr);
		1016
		1017	Safefree (cctx);
		1018	}
		1019
		1020	/* wether this cctx should be destructed */
		1021	#define CCTX_EXPIRED(cctx) ((cctx)->ssize < coro_stacksize \|\| ((cctx)->flags & CC_NOREUSE))
		1022
		1023	static coro_cctx *
		1024	cctx_get (pTHX)
		1025	{
		1026	while (expect_true (cctx_first))
		1027	{
		1028	coro_cctx *cctx = cctx_first;
		1029	cctx_first = cctx->next;
		1030	--cctx_idle;
		1031
		1032	if (expect_true (!CCTX_EXPIRED (cctx)))
		1033	return cctx;
		1034
		1035	cctx_destroy (cctx);
		1036	}
		1037
		1038	return cctx_new ();
		1039	}
		1040
		1041	static void
		1042	cctx_put (coro_cctx *cctx)
		1043	{
		1044	/* free another cctx if overlimit */
		1045	if (expect_false (cctx_idle >= MAX_IDLE_CCTX))
		1046	{
		1047	coro_cctx *first = cctx_first;
		1048	cctx_first = first->next;
		1049	--cctx_idle;
		1050
		1051	cctx_destroy (first);
		1052	}
		1053
		1054	++cctx_idle;
		1055	cctx->next = cctx_first;
		1056	cctx_first = cctx;
		1057	}
		1058
		1059	/ coroutine switching ***************************************************/
		1060
		1061	static void
		1062	transfer_check (pTHX_ struct coro prev, struct coro next)
		1063	{
		1064	if (expect_true (prev != next))
		1065	{
		1066	if (expect_false (!(prev->flags & (CF_RUNNING \| CF_NEW))))
		1067	croak ("Coro::State::transfer called with non-running/new prev Coro::State, but can only transfer from running or new states");
		1068
		1069	if (expect_false (next->flags & CF_RUNNING))
		1070	croak ("Coro::State::transfer called with running next Coro::State, but can only transfer to inactive states");
		1071
		1072	if (expect_false (next->flags & CF_DESTROYED))
		1073	croak ("Coro::State::transfer called with destroyed next Coro::State, but can only transfer to inactive states");
		1074
		1075	if (
		1076	#if PERL_VERSION_ATLEAST (5,9,0)
		1077	expect_false (PL_parser)
626	#else	1078	#else
627		1079	expect_false (PL_lex_state != LEX_NOTPARSING)
628	stack->ssize = STACKSIZE * (long)sizeof (long);
629	New (0, stack->sptr, STACKSIZE, long);
630
631	if (!stack->sptr)
632	{
633	perror (stderr, "FATAL: unable to malloc stack for coroutine");
634	_exit (EXIT_FAILURE);
635	}
636
637	#endif	1080	#endif
638		1081	)
639	coro_create (&stack->cctx, coro_run, (void *)stack, stack->sptr, stack->ssize);	1082	croak ("Coro::State::transfer called while parsing, but this is not supported");
640
641	return stack;
642	}
643
644	static void
645	stack_free (coro_stack *stack)
646	{
647	if (!stack)
648	return;
649
650	#if HAVE_MMAP
651	munmap (stack->sptr, stack->ssize);
652	#else
653	Safefree (stack->sptr);
654	#endif
655
656	Safefree (stack);
657	}
658
659	static coro_stack *stack_first;
660
661	static coro_stack *
662	stack_get ()
663	{
664	coro_stack *stack;
665
666	if (stack_first)
667	{
668	stack = stack_first;
669	stack_first = stack->next;
670	}
671	else
672	{
673	stack = stack_new ();
674	PL_op = PL_op->op_next;
675	}	1083	}
676
677	return stack;
678	}	1084	}
679		1085
680	static void	1086	/* always use the TRANSFER macro */
681	stack_put (coro_stack *stack)	1087	static void NOINLINE
682	{
683	stack->next = stack_first;
684	stack_first = stack;
685	}
686
687	/* never call directly, always through the coro_state_transfer global variable */
688	static void
689	transfer_impl (struct coro prev, struct coro next, int flags)	1088	transfer (pTHX_ struct coro prev, struct coro next)
690	{	1089	{
691	dSTACKLEVEL;	1090	dSTACKLEVEL;
692		1091
693	/* sometimes transfer is only called to set idle_sp */	1092	/* sometimes transfer is only called to set idle_sp */
694	if (flags == TRANSFER_SET_STACKLEVEL)	1093	if (expect_false (!next))
		1094	{
695	((coro_stack *)prev)->idle_sp = STACKLEVEL;	1095	((coro_cctx *)prev)->idle_sp = STACKLEVEL;
696	else if (prev != next)	1096	assert (((coro_cctx )prev)->idle_te = PL_top_env); / just for the side-effect when asserts are enabled */
697	{	1097	}
		1098	else if (expect_true (prev != next))
		1099	{
698	coro_stack *prev__stack;	1100	coro_cctx *prev__cctx;
		1101
		1102	if (expect_false (prev->flags & CF_NEW))
		1103	{
		1104	/* create a new empty context */
		1105	Newz (0, prev->cctx, 1, coro_cctx);
		1106	prev->flags &= ~CF_NEW;
		1107	prev->flags \|= CF_RUNNING;
		1108	}
		1109
		1110	prev->flags &= ~CF_RUNNING;
		1111	next->flags \|= CF_RUNNING;
699		1112
700	LOCK;	1113	LOCK;
701		1114
702	if (next->mainstack)	1115	if (expect_false (next->flags & CF_NEW))
703	{	1116	{
704	/* coroutine already started */	1117	/* need to start coroutine */
705	SAVE (prev, flags);	1118	next->flags &= ~CF_NEW;
706	LOAD (next);	1119	/* first get rid of the old state */
		1120	save_perl (aTHX_ prev);
		1121	/* setup coroutine call */
		1122	coro_setup (aTHX_ next);
707	}	1123	}
708	else	1124	else
709	{	1125	{
710	/* need to start coroutine */	1126	/* coroutine already started */
711	/* first get rid of the old state */	1127	save_perl (aTHX_ prev);
712	SAVE (prev, -1);	1128	load_perl (aTHX_ next);
713	/* setup coroutine call */
714	setup_coro (next);
715	/* need a stack */
716	next->stack = 0;
717	}	1129	}
718		1130
719	if (!prev->stack)
720	/* create a new empty context */
721	Newz (0, prev->stack, 1, coro_stack);
722
723	prev__stack = prev->stack;	1131	prev__cctx = prev->cctx;
724		1132
725	/* possibly "free" the stack */	1133	/* possibly "free" the cctx */
726	if (prev__stack->idle_sp == STACKLEVEL)	1134	if (expect_true (prev__cctx->idle_sp == STACKLEVEL && !(prev__cctx->flags & CC_TRACE)))
727	{	1135	{
728	stack_put (prev__stack);	1136	/* I assume that STACKLEVEL is a stronger indicator than PL_top_env changes */
		1137	assert (("ERROR: current top_env must equal previous top_env", PL_top_env == prev__cctx->idle_te));
		1138
729	prev->stack = 0;	1139	prev->cctx = 0;
		1140
		1141	/* if the cctx is about to be destroyed we need to make sure we won't see it in cctx_get */
		1142	/* without this the next cctx_get might destroy the prev__cctx while still in use */
		1143	if (expect_false (CCTX_EXPIRED (prev__cctx)))
		1144	if (!next->cctx)
		1145	next->cctx = cctx_get (aTHX);
		1146
		1147	cctx_put (prev__cctx);
730	}	1148	}
731		1149
732	if (!next->stack)	1150	++next->usecount;
733	next->stack = stack_get ();
734		1151
735	if (prev__stack != next->stack)	1152	if (expect_true (!next->cctx))
		1153	next->cctx = cctx_get (aTHX);
		1154
		1155	if (expect_false (prev__cctx != next->cctx))
736	{	1156	{
737	prev__stack->top_env = PL_top_env;	1157	prev__cctx->top_env = PL_top_env;
738	PL_top_env = next->stack->top_env;	1158	PL_top_env = next->cctx->top_env;
739	coro_transfer (&prev__stack->cctx, &next->stack->cctx);	1159	coro_transfer (&prev__cctx->cctx, &next->cctx->cctx);
740	}	1160	}
741		1161
742	free_coro_mortal ();	1162	free_coro_mortal (aTHX);
743
744	UNLOCK;	1163	UNLOCK;
745	}
746	}
747		1164
748	/* use this function pointer to call the above function */	1165	if (expect_false (prev->throw \|\| next->throw))
749	/* this is done to increase chances of the compiler not inlining the call */	1166	{
750	/* not static to make it even harder for the compiler (and theoretically impossible in most cases */	1167	struct coro *coro = SvSTATE (coro_current);
751	void (coro_state_transfer)(struct coro prev, struct coro *next, int flags) = transfer_impl;	1168
		1169	if (coro->throw)
		1170	{
		1171	SV *exception = coro->throw;
		1172	coro->throw = 0;
		1173	sv_setsv (ERRSV, exception);
		1174	croak (0);
		1175	}
		1176	}
		1177	}
		1178	}
752		1179
753	struct transfer_args	1180	struct transfer_args
754	{	1181	{
755	struct coro prev, next;	1182	struct coro prev, next;
756	int flags;
757	};	1183	};
758		1184
759	#define TRANSFER(ta) coro_state_transfer ((ta).prev, (ta).next, (ta).flags)	1185	#define TRANSFER(ta) transfer (aTHX_ (ta).prev, (ta).next)
		1186	#define TRANSFER_CHECK(ta) transfer_check (aTHX_ (ta).prev, (ta).next)
760		1187
		1188	/ high level stuff ******************************************************/
		1189
761	static void	1190	static int
762	coro_state_destroy (struct coro *coro)	1191	coro_state_destroy (pTHX_ struct coro *coro)
763	{	1192	{
764	if (coro->refcnt--)	1193	if (coro->flags & CF_DESTROYED)
765	return;	1194	return 0;
		1195
		1196	coro->flags \|= CF_DESTROYED;
		1197
		1198	if (coro->flags & CF_READY)
		1199	{
		1200	/* reduce nready, as destroying a ready coro effectively unreadies it */
		1201	/* alternative: look through all ready queues and remove the coro */
		1202	LOCK;
		1203	--coro_nready;
		1204	UNLOCK;
		1205	}
		1206	else
		1207	coro->flags \|= CF_READY; /* make sure it is NOT put into the readyqueue */
766		1208
767	if (coro->mainstack && coro->mainstack != main_mainstack)	1209	if (coro->mainstack && coro->mainstack != main_mainstack)
768	{	1210	{
769	struct coro temp;	1211	struct coro temp;
770		1212
771	SAVE ((&temp), TRANSFER_SAVE_ALL);	1213	if (coro->flags & CF_RUNNING)
772	LOAD (coro);	1214	croak ("FATAL: tried to destroy currently running coroutine");
773		1215
774	destroy_stacks ();	1216	save_perl (aTHX_ &temp);
		1217	load_perl (aTHX_ coro);
775		1218
776	LOAD ((&temp)); /* this will get rid of defsv etc.. */	1219	coro_destroy (aTHX_ coro);
777		1220
		1221	load_perl (aTHX_ &temp);
		1222
778	coro->mainstack = 0;	1223	coro->slot = 0;
779	}	1224	}
780		1225
781	stack_free (coro->stack);	1226	cctx_destroy (coro->cctx);
782	SvREFCNT_dec (coro->args);	1227	SvREFCNT_dec (coro->args);
783	Safefree (coro);	1228
		1229	if (coro->next) coro->next->prev = coro->prev;
		1230	if (coro->prev) coro->prev->next = coro->next;
		1231	if (coro == coro_first) coro_first = coro->next;
		1232
		1233	return 1;
784	}	1234	}
785		1235
786	static int	1236	static int
787	coro_state_clear (pTHX_ SV sv, MAGIC mg)	1237	coro_state_free (pTHX_ SV sv, MAGIC mg)
788	{	1238	{
789	struct coro coro = (struct coro )mg->mg_ptr;	1239	struct coro coro = (struct coro )mg->mg_ptr;
790	mg->mg_ptr = 0;	1240	mg->mg_ptr = 0;
791		1241
		1242	coro->hv = 0;
		1243
		1244	if (--coro->refcnt < 0)
		1245	{
792	coro_state_destroy (coro);	1246	coro_state_destroy (aTHX_ coro);
		1247	Safefree (coro);
		1248	}
793		1249
794	return 0;	1250	return 0;
795	}	1251	}
796		1252
797	static int	1253	static int
…		…
802	++coro->refcnt;	1258	++coro->refcnt;
803		1259
804	return 0;	1260	return 0;
805	}	1261	}
806		1262
807	static MGVTBL coro_state_vtbl = { 0, 0, 0, 0, coro_state_clear, 0, coro_state_dup, 0 };	1263	static MGVTBL coro_state_vtbl = {
		1264	0, 0, 0, 0,
		1265	coro_state_free,
		1266	0,
		1267	#ifdef MGf_DUP
		1268	coro_state_dup,
		1269	#else
		1270	# define MGf_DUP 0
		1271	#endif
		1272	};
808		1273
809	static struct coro *
810	SvSTATE (SV *coro)
811	{
812	HV *stash;
813	MAGIC *mg;
814
815	if (SvROK (coro))
816	coro = SvRV (coro);
817
818	stash = SvSTASH (coro);
819	if (stash != coro_stash && stash != coro_state_stash)
820	{
821	/* very slow, but rare, check */
822	if (!sv_derived_from (sv_2mortal (newRV_inc (coro)), "Coro::State"))
823	croak ("Coro::State object required");
824	}
825
826	mg = SvMAGIC (coro);
827	assert (mg->mg_type == PERL_MAGIC_ext);
828	return (struct coro *)mg->mg_ptr;
829	}
830
831	static void	1274	static void
832	prepare_transfer (struct transfer_args ta, SV prev, SV *next, int flags)	1275	prepare_transfer (pTHX_ struct transfer_args ta, SV prev_sv, SV *next_sv)
833	{	1276	{
834	ta->prev = SvSTATE (prev);	1277	ta->prev = SvSTATE (prev_sv);
835	ta->next = SvSTATE (next);	1278	ta->next = SvSTATE (next_sv);
836	ta->flags = flags;	1279	TRANSFER_CHECK (*ta);
837	}	1280	}
838		1281
839	static void	1282	static void
840	api_transfer (SV prev, SV next, int flags)	1283	api_transfer (SV prev_sv, SV next_sv)
841	{	1284	{
842	dTHX;	1285	dTHX;
843	struct transfer_args ta;	1286	struct transfer_args ta;
844		1287
845	prepare_transfer (&ta, prev, next, flags);	1288	prepare_transfer (aTHX_ &ta, prev_sv, next_sv);
846	TRANSFER (ta);	1289	TRANSFER (ta);
847	}	1290	}
848		1291
849	/ Coro ******************************************************************/	1292	/ Coro ******************************************************************/
850		1293
851	#define PRIO_MAX 3
852	#define PRIO_HIGH 1
853	#define PRIO_NORMAL 0
854	#define PRIO_LOW -1
855	#define PRIO_IDLE -3
856	#define PRIO_MIN -4
857
858	/* for Coro.pm */
859	static GV coro_current, coro_idle;
860	static AV *coro_ready [PRIO_MAX-PRIO_MIN+1];
861	static int coro_nready;
862
863	static void	1294	static void
864	coro_enq (SV *sv)	1295	coro_enq (pTHX_ SV *coro_sv)
865	{	1296	{
866	int prio;
867
868	if (SvTYPE (sv) != SVt_PVHV)
869	croak ("Coro::ready tried to enqueue something that is not a coroutine");
870
871	prio = SvSTATE (sv)->prio;
872
873	av_push (coro_ready [prio - PRIO_MIN], sv);	1297	av_push (coro_ready [SvSTATE (coro_sv)->prio - PRIO_MIN], coro_sv);
874	coro_nready++;
875	}	1298	}
876		1299
877	static SV *	1300	static SV *
878	coro_deq (int min_prio)	1301	coro_deq (pTHX_ int min_prio)
879	{	1302	{
880	int prio = PRIO_MAX - PRIO_MIN;	1303	int prio = PRIO_MAX - PRIO_MIN;
881		1304
882	min_prio -= PRIO_MIN;	1305	min_prio -= PRIO_MIN;
883	if (min_prio < 0)	1306	if (min_prio < 0)
884	min_prio = 0;	1307	min_prio = 0;
885		1308
886	for (prio = PRIO_MAX - PRIO_MIN + 1; --prio >= min_prio; )	1309	for (prio = PRIO_MAX - PRIO_MIN + 1; --prio >= min_prio; )
887	if (AvFILLp (coro_ready [prio]) >= 0)	1310	if (AvFILLp (coro_ready [prio]) >= 0)
888	{
889	coro_nready--;
890	return av_shift (coro_ready [prio]);	1311	return av_shift (coro_ready [prio]);
891	}
892		1312
893	return 0;	1313	return 0;
894	}	1314	}
895		1315
896	static void	1316	static int
897	api_ready (SV *coro)	1317	api_ready (SV *coro_sv)
898	{	1318	{
899	dTHX;	1319	dTHX;
		1320	struct coro *coro;
900		1321
901	if (SvROK (coro))	1322	if (SvROK (coro_sv))
902	coro = SvRV (coro);	1323	coro_sv = SvRV (coro_sv);
		1324
		1325	coro = SvSTATE (coro_sv);
		1326
		1327	if (coro->flags & CF_READY)
		1328	return 0;
		1329
		1330	coro->flags \|= CF_READY;
903		1331
904	LOCK;	1332	LOCK;
905	coro_enq (SvREFCNT_inc (coro));	1333	coro_enq (aTHX_ SvREFCNT_inc (coro_sv));
		1334	++coro_nready;
906	UNLOCK;	1335	UNLOCK;
907	}
908		1336
		1337	return 1;
		1338	}
		1339
909	static void	1340	static int
		1341	api_is_ready (SV *coro_sv)
		1342	{
		1343	dTHX;
		1344	return !!(SvSTATE (coro_sv)->flags & CF_READY);
		1345	}
		1346
		1347	static void
910	prepare_schedule (struct transfer_args *ta)	1348	prepare_schedule (pTHX_ struct transfer_args *ta)
911	{	1349	{
912	SV current, prev, *next;	1350	SV prev_sv, next_sv;
		1351
		1352	for (;;)
		1353	{
		1354	LOCK;
		1355	next_sv = coro_deq (aTHX_ PRIO_MIN);
		1356
		1357	/* nothing to schedule: call the idle handler */
		1358	if (expect_false (!next_sv))
		1359	{
		1360	dSP;
		1361	UNLOCK;
		1362
		1363	ENTER;
		1364	SAVETMPS;
		1365
		1366	PUSHMARK (SP);
		1367	PUTBACK;
		1368	call_sv (get_sv ("Coro::idle", FALSE), G_DISCARD);
		1369
		1370	FREETMPS;
		1371	LEAVE;
		1372	continue;
		1373	}
		1374
		1375	ta->next = SvSTATE (next_sv);
		1376
		1377	/* cannot transfer to destroyed coros, skip and look for next */
		1378	if (expect_false (ta->next->flags & CF_DESTROYED))
		1379	{
		1380	UNLOCK;
		1381	SvREFCNT_dec (next_sv);
		1382	/* coro_nready is already taken care of by destroy */
		1383	continue;
		1384	}
		1385
		1386	--coro_nready;
		1387	UNLOCK;
		1388	break;
		1389	}
		1390
		1391	/* free this only after the transfer */
		1392	prev_sv = SvRV (coro_current);
		1393	ta->prev = SvSTATE (prev_sv);
		1394	TRANSFER_CHECK (*ta);
		1395	assert (ta->next->flags & CF_READY);
		1396	ta->next->flags &= ~CF_READY;
		1397	SvRV_set (coro_current, next_sv);
913		1398
914	LOCK;	1399	LOCK;
915
916	current = GvSV (coro_current);
917
918	for (;;)
919	{
920	LOCK;
921
922	next = coro_deq (PRIO_MIN);
923
924	if (next)
925	break;
926
927	UNLOCK;
928
929	{
930	dSP;
931
932	ENTER;
933	SAVETMPS;
934
935	PUSHMARK (SP);
936	PUTBACK;
937	call_sv (GvSV (coro_idle), G_DISCARD);
938
939	FREETMPS;
940	LEAVE;
941	}
942	}
943
944	prev = SvRV (current);
945	SvRV (current) = next;
946
947	/* free this only after the transfer */
948	free_coro_mortal ();	1400	free_coro_mortal (aTHX);
949	coro_mortal = prev;	1401	coro_mortal = prev_sv;
950
951	ta->prev = SvSTATE (prev);
952	ta->next = SvSTATE (next);
953	ta->flags = TRANSFER_SAVE_ALL;
954
955	UNLOCK;	1402	UNLOCK;
956	}	1403	}
957		1404
958	static void	1405	static void
959	prepare_cede (struct transfer_args *ta)	1406	prepare_cede (pTHX_ struct transfer_args *ta)
960	{	1407	{
961	LOCK;	1408	api_ready (coro_current);
962	coro_enq (SvREFCNT_inc (SvRV (GvSV (coro_current))));
963	UNLOCK;
964
965	prepare_schedule (ta);	1409	prepare_schedule (aTHX_ ta);
		1410	}
		1411
		1412	static int
		1413	prepare_cede_notself (pTHX_ struct transfer_args *ta)
		1414	{
		1415	if (coro_nready)
		1416	{
		1417	SV *prev = SvRV (coro_current);
		1418	prepare_schedule (aTHX_ ta);
		1419	api_ready (prev);
		1420	return 1;
		1421	}
		1422	else
		1423	return 0;
966	}	1424	}
967		1425
968	static void	1426	static void
969	api_schedule (void)	1427	api_schedule (void)
970	{	1428	{
971	dTHX;	1429	dTHX;
972	struct transfer_args ta;	1430	struct transfer_args ta;
973		1431
974	prepare_schedule (&ta);	1432	prepare_schedule (aTHX_ &ta);
975	TRANSFER (ta);	1433	TRANSFER (ta);
976	}	1434	}
977		1435
978	static void	1436	static int
979	api_cede (void)	1437	api_cede (void)
980	{	1438	{
981	dTHX;	1439	dTHX;
982	struct transfer_args ta;	1440	struct transfer_args ta;
983		1441
984	prepare_cede (&ta);	1442	prepare_cede (aTHX_ &ta);
		1443
		1444	if (expect_true (ta.prev != ta.next))
		1445	{
985	TRANSFER (ta);	1446	TRANSFER (ta);
		1447	return 1;
		1448	}
		1449	else
		1450	return 0;
986	}	1451	}
987		1452
		1453	static int
		1454	api_cede_notself (void)
		1455	{
		1456	dTHX;
		1457	struct transfer_args ta;
		1458
		1459	if (prepare_cede_notself (aTHX_ &ta))
		1460	{
		1461	TRANSFER (ta);
		1462	return 1;
		1463	}
		1464	else
		1465	return 0;
		1466	}
		1467
		1468	static void
		1469	api_trace (SV *coro_sv, int flags)
		1470	{
		1471	dTHX;
		1472	struct coro *coro = SvSTATE (coro_sv);
		1473
		1474	if (flags & CC_TRACE)
		1475	{
		1476	if (!coro->cctx)
		1477	coro->cctx = cctx_new ();
		1478	else if (!(coro->cctx->flags & CC_TRACE))
		1479	croak ("cannot enable tracing on coroutine with custom stack");
		1480
		1481	coro->cctx->flags \|= CC_NOREUSE \| (flags & (CC_TRACE \| CC_TRACE_ALL));
		1482	}
		1483	else if (coro->cctx && coro->cctx->flags & CC_TRACE)
		1484	{
		1485	coro->cctx->flags &= ~(CC_TRACE \| CC_TRACE_ALL);
		1486
		1487	if (coro->flags & CF_RUNNING)
		1488	PL_runops = RUNOPS_DEFAULT;
		1489	else
		1490	coro->slot->runops = RUNOPS_DEFAULT;
		1491	}
		1492	}
		1493
988	MODULE = Coro::State PACKAGE = Coro::State	1494	MODULE = Coro::State PACKAGE = Coro::State PREFIX = api_
989		1495
990	PROTOTYPES: DISABLE	1496	PROTOTYPES: DISABLE
991		1497
992	BOOT:	1498	BOOT:
993	{	1499	{
994	#ifdef USE_ITHREADS	1500	#ifdef USE_ITHREADS
995	MUTEX_INIT (&coro_mutex);	1501	MUTEX_INIT (&coro_mutex);
996	#endif	1502	#endif
997	BOOT_PAGESIZE;	1503	BOOT_PAGESIZE;
998		1504
		1505	irsgv = gv_fetchpv ("/" , GV_ADD\|GV_NOTQUAL, SVt_PV);
		1506	stdoutgv = gv_fetchpv ("STDOUT", GV_ADD\|GV_NOTQUAL, SVt_PVIO);
		1507
		1508	hv_sig = coro_get_hv ("SIG", TRUE);
		1509	sv_diehook = coro_get_sv ("Coro::State::DIEHOOK" , TRUE);
		1510	sv_warnhook = coro_get_sv ("Coro::State::WARNHOOK", TRUE);
		1511
		1512	if (!PL_diehook ) hv_store (hv_sig, strpair ("__DIE__" ), SvREFCNT_inc (sv_diehook ), 0);
		1513	if (!PL_warnhook) hv_store (hv_sig, strpair ("__WARN__"), SvREFCNT_inc (sv_warnhook), 0);
		1514
999	coro_state_stash = gv_stashpv ("Coro::State", TRUE);	1515	coro_state_stash = gv_stashpv ("Coro::State", TRUE);
1000		1516
1001	newCONSTSUB (coro_state_stash, "SAVE_DEFAV", newSViv (TRANSFER_SAVE_DEFAV));	1517	newCONSTSUB (coro_state_stash, "CC_TRACE" , newSViv (CC_TRACE));
1002	newCONSTSUB (coro_state_stash, "SAVE_DEFSV", newSViv (TRANSFER_SAVE_DEFSV));	1518	newCONSTSUB (coro_state_stash, "CC_TRACE_SUB" , newSViv (CC_TRACE_SUB));
1003	newCONSTSUB (coro_state_stash, "SAVE_ERRSV", newSViv (TRANSFER_SAVE_ERRSV));	1519	newCONSTSUB (coro_state_stash, "CC_TRACE_LINE", newSViv (CC_TRACE_LINE));
		1520	newCONSTSUB (coro_state_stash, "CC_TRACE_ALL" , newSViv (CC_TRACE_ALL));
1004		1521
1005	main_mainstack = PL_mainstack;	1522	main_mainstack = PL_mainstack;
		1523	main_top_env = PL_top_env;
		1524
		1525	while (main_top_env->je_prev)
		1526	main_top_env = main_top_env->je_prev;
1006		1527
1007	coroapi.ver = CORO_API_VERSION;	1528	coroapi.ver = CORO_API_VERSION;
1008	coroapi.transfer = api_transfer;	1529	coroapi.transfer = api_transfer;
1009		1530
1010	assert (("PRIO_NORMAL must be 0", !PRIO_NORMAL));	1531	assert (("PRIO_NORMAL must be 0", !PRIO_NORMAL));
…		…
1017	struct coro *coro;	1538	struct coro *coro;
1018	HV *hv;	1539	HV *hv;
1019	int i;	1540	int i;
1020		1541
1021	Newz (0, coro, 1, struct coro);	1542	Newz (0, coro, 1, struct coro);
1022	coro->args = newAV ();	1543	coro->args = newAV ();
		1544	coro->flags = CF_NEW;
1023		1545
		1546	if (coro_first) coro_first->prev = coro;
		1547	coro->next = coro_first;
		1548	coro_first = coro;
		1549
1024	hv = newHV ();	1550	coro->hv = hv = newHV ();
1025	sv_magicext ((SV )hv, 0, PERL_MAGIC_ext, &coro_state_vtbl, (char )coro, 0)->mg_flags \|= MGf_DUP;	1551	sv_magicext ((SV )hv, 0, PERL_MAGIC_ext, &coro_state_vtbl, (char )coro, 0)->mg_flags \|= MGf_DUP;
1026	RETVAL = sv_bless (newRV_noinc ((SV *)hv), gv_stashpv (klass, 1));	1552	RETVAL = sv_bless (newRV_noinc ((SV *)hv), gv_stashpv (klass, 1));
1027		1553
		1554	av_extend (coro->args, items - 1);
1028	for (i = 1; i < items; i++)	1555	for (i = 1; i < items; i++)
1029	av_push (coro->args, newSVsv (ST (i)));	1556	av_push (coro->args, newSVsv (ST (i)));
1030
1031	/coro->mainstack = 0; //actual work is done inside transfer /
1032	/coro->stack = 0;/
1033	}	1557	}
1034	OUTPUT:	1558	OUTPUT:
1035	RETVAL	1559	RETVAL
1036		1560
		1561	# these not obviously related functions are all rolled into the same xs
		1562	# function to increase chances that they all will call transfer with the same
		1563	# stack offset
1037	void	1564	void
1038	_set_stacklevel (...)	1565	_set_stacklevel (...)
1039	ALIAS:	1566	ALIAS:
1040	Coro::State::transfer = 1	1567	Coro::State::transfer = 1
1041	Coro::schedule = 2	1568	Coro::schedule = 2
1042	Coro::cede = 3	1569	Coro::cede = 3
1043	Coro::Cont::yield = 4	1570	Coro::cede_notself = 4
1044	CODE:	1571	CODE:
1045	{	1572	{
1046	struct transfer_args ta;	1573	struct transfer_args ta;
1047		1574
1048	switch (ix)	1575	switch (ix)
1049	{	1576	{
1050	case 0:	1577	case 0:
1051	ta.prev = (struct coro )INT2PTR (coro_stack , SvIV (ST (0)));	1578	ta.prev = (struct coro )INT2PTR (coro_cctx , SvIV (ST (0)));
1052	ta.next = 0;	1579	ta.next = 0;
1053	ta.flags = TRANSFER_SET_STACKLEVEL;
1054	break;	1580	break;
1055		1581
1056	case 1:	1582	case 1:
1057	if (items != 3)	1583	if (items != 2)
1058	croak ("Coro::State::transfer(prev,next,flags) expects three arguments, not %d", items);	1584	croak ("Coro::State::transfer (prev,next) expects two arguments, not %d", items);
1059		1585
1060	prepare_transfer (&ta, ST (0), ST (1), SvIV (ST (2)));	1586	prepare_transfer (aTHX_ &ta, ST (0), ST (1));
1061	break;	1587	break;
1062		1588
1063	case 2:	1589	case 2:
1064	prepare_schedule (&ta);	1590	prepare_schedule (aTHX_ &ta);
1065	break;	1591	break;
1066		1592
1067	case 3:	1593	case 3:
1068	prepare_cede (&ta);	1594	prepare_cede (aTHX_ &ta);
1069	break;	1595	break;
1070		1596
1071	case 4:	1597	case 4:
1072	{	1598	if (!prepare_cede_notself (aTHX_ &ta))
1073	SV *yieldstack;	1599	XSRETURN_EMPTY;
1074	SV *sv;
1075	AV *defav = GvAV (PL_defgv);
1076		1600
1077	yieldstack = *hv_fetch (
1078	(HV *)SvRV (GvSV (coro_current)),
1079	"yieldstack", sizeof ("yieldstack") - 1,
1080	0
1081	);
1082
1083	/* set up @_ -- ugly */
1084	av_clear (defav);
1085	av_fill (defav, items - 1);
1086	while (items--)
1087	av_store (defav, items, SvREFCNT_inc (ST(items)));
1088
1089	sv = av_pop ((AV *)SvRV (yieldstack));
1090	ta.prev = SvSTATE (av_fetch ((AV )SvRV (sv), 0, 0));
1091	ta.next = SvSTATE (av_fetch ((AV )SvRV (sv), 1, 0));
1092	ta.flags = 0;
1093	SvREFCNT_dec (sv);
1094	}
1095	break;	1601	break;
1096
1097	}	1602	}
1098		1603
		1604	BARRIER;
1099	TRANSFER (ta);	1605	TRANSFER (ta);
1100	}
1101		1606
1102	void	1607	if (expect_false (GIMME_V != G_VOID && ta.next != ta.prev))
1103	_clone_state_from (SV dst, SV src)	1608	XSRETURN_YES;
		1609	}
		1610
		1611	bool
		1612	_destroy (SV *coro_sv)
1104	CODE:	1613	CODE:
1105	{	1614	RETVAL = coro_state_destroy (aTHX_ SvSTATE (coro_sv));
1106	struct coro *coro_src = SvSTATE (src);	1615	OUTPUT:
1107		1616	RETVAL
1108	sv_unmagic (SvRV (dst), PERL_MAGIC_ext);
1109
1110	++coro_src->refcnt;
1111	sv_magicext (SvRV (dst), 0, PERL_MAGIC_ext, &coro_state_vtbl, (char *)coro_src, 0)->mg_flags \|= MGf_DUP;
1112	}
1113
1114	void
1115	_nonlocal_goto (IV nextop)
1116	CODE:
1117	/* uuh, somebody will kill me again for this */
1118	PL_op->op_next = INT2PTR (OP *, nextop);
1119		1617
1120	void	1618	void
1121	_exit (code)	1619	_exit (code)
1122	int code	1620	int code
1123	PROTOTYPE: $	1621	PROTOTYPE: $
1124	CODE:	1622	CODE:
1125	_exit (code);	1623	_exit (code);
1126		1624
		1625	int
		1626	cctx_stacksize (int new_stacksize = 0)
		1627	CODE:
		1628	RETVAL = coro_stacksize;
		1629	if (new_stacksize)
		1630	coro_stacksize = new_stacksize;
		1631	OUTPUT:
		1632	RETVAL
		1633
		1634	int
		1635	cctx_count ()
		1636	CODE:
		1637	RETVAL = cctx_count;
		1638	OUTPUT:
		1639	RETVAL
		1640
		1641	int
		1642	cctx_idle ()
		1643	CODE:
		1644	RETVAL = cctx_idle;
		1645	OUTPUT:
		1646	RETVAL
		1647
		1648	void
		1649	list ()
		1650	PPCODE:
		1651	{
		1652	struct coro *coro;
		1653	for (coro = coro_first; coro; coro = coro->next)
		1654	if (coro->hv)
		1655	XPUSHs (sv_2mortal (newRV_inc ((SV *)coro->hv)));
		1656	}
		1657
		1658	void
		1659	call (Coro::State coro, SV *coderef)
		1660	ALIAS:
		1661	eval = 1
		1662	CODE:
		1663	{
		1664	if (coro->mainstack)
		1665	{
		1666	struct coro temp;
		1667
		1668	if (!(coro->flags & CF_RUNNING))
		1669	{
		1670	save_perl (aTHX_ &temp);
		1671	load_perl (aTHX_ coro);
		1672	}
		1673
		1674	{
		1675	dSP;
		1676	ENTER;
		1677	SAVETMPS;
		1678	PUSHMARK (SP);
		1679	PUTBACK;
		1680
		1681	if (ix)
		1682	eval_sv (coderef, 0);
		1683	else
		1684	call_sv (coderef, G_KEEPERR \| G_EVAL \| G_VOID \| G_DISCARD);
		1685
		1686	SPAGAIN;
		1687	FREETMPS;
		1688	LEAVE;
		1689	PUTBACK;
		1690	}
		1691
		1692	if (!(coro->flags & CF_RUNNING))
		1693	{
		1694	save_perl (aTHX_ coro);
		1695	load_perl (aTHX_ &temp);
		1696	}
		1697	}
		1698	}
		1699
		1700	SV *
		1701	is_ready (Coro::State coro)
		1702	PROTOTYPE: $
		1703	ALIAS:
		1704	is_ready = CF_READY
		1705	is_running = CF_RUNNING
		1706	is_new = CF_NEW
		1707	is_destroyed = CF_DESTROYED
		1708	CODE:
		1709	RETVAL = boolSV (coro->flags & ix);
		1710	OUTPUT:
		1711	RETVAL
		1712
		1713	void
		1714	api_trace (SV *coro, int flags = CC_TRACE \| CC_TRACE_SUB)
		1715
		1716	SV *
		1717	has_stack (Coro::State coro)
		1718	PROTOTYPE: $
		1719	CODE:
		1720	RETVAL = boolSV (!!coro->cctx);
		1721	OUTPUT:
		1722	RETVAL
		1723
		1724	int
		1725	is_traced (Coro::State coro)
		1726	PROTOTYPE: $
		1727	CODE:
		1728	RETVAL = (coro->cctx ? coro->cctx->flags : 0) & CC_TRACE_ALL;
		1729	OUTPUT:
		1730	RETVAL
		1731
		1732	IV
		1733	rss (Coro::State coro)
		1734	PROTOTYPE: $
		1735	ALIAS:
		1736	usecount = 1
		1737	CODE:
		1738	switch (ix)
		1739	{
		1740	case 0: RETVAL = coro_rss (aTHX_ coro); break;
		1741	case 1: RETVAL = coro->usecount; break;
		1742	}
		1743	OUTPUT:
		1744	RETVAL
		1745
		1746
1127	MODULE = Coro::State PACKAGE = Coro	1747	MODULE = Coro::State PACKAGE = Coro
1128		1748
1129	BOOT:	1749	BOOT:
1130	{	1750	{
1131	int i;	1751	int i;
1132		1752
		1753	sv_pool_rss = coro_get_sv ("Coro::POOL_RSS" , TRUE);
		1754	sv_pool_size = coro_get_sv ("Coro::POOL_SIZE" , TRUE);
		1755	av_async_pool = coro_get_av ("Coro::async_pool", TRUE);
		1756
		1757	coro_current = coro_get_sv ("Coro::current", FALSE);
		1758	SvREADONLY_on (coro_current);
		1759
1133	coro_stash = gv_stashpv ("Coro", TRUE);	1760	coro_stash = gv_stashpv ("Coro", TRUE);
1134		1761
1135	newCONSTSUB (coro_stash, "PRIO_MAX", newSViv (PRIO_MAX));	1762	newCONSTSUB (coro_stash, "PRIO_MAX", newSViv (PRIO_MAX));
1136	newCONSTSUB (coro_stash, "PRIO_HIGH", newSViv (PRIO_HIGH));	1763	newCONSTSUB (coro_stash, "PRIO_HIGH", newSViv (PRIO_HIGH));
1137	newCONSTSUB (coro_stash, "PRIO_NORMAL", newSViv (PRIO_NORMAL));	1764	newCONSTSUB (coro_stash, "PRIO_NORMAL", newSViv (PRIO_NORMAL));
1138	newCONSTSUB (coro_stash, "PRIO_LOW", newSViv (PRIO_LOW));	1765	newCONSTSUB (coro_stash, "PRIO_LOW", newSViv (PRIO_LOW));
1139	newCONSTSUB (coro_stash, "PRIO_IDLE", newSViv (PRIO_IDLE));	1766	newCONSTSUB (coro_stash, "PRIO_IDLE", newSViv (PRIO_IDLE));
1140	newCONSTSUB (coro_stash, "PRIO_MIN", newSViv (PRIO_MIN));	1767	newCONSTSUB (coro_stash, "PRIO_MIN", newSViv (PRIO_MIN));
1141		1768
1142	coro_current = gv_fetchpv ("Coro::current", TRUE, SVt_PV);
1143	coro_idle = gv_fetchpv ("Coro::idle" , TRUE, SVt_PV);
1144
1145	for (i = PRIO_MAX - PRIO_MIN + 1; i--; )	1769	for (i = PRIO_MAX - PRIO_MIN + 1; i--; )
1146	coro_ready[i] = newAV ();	1770	coro_ready[i] = newAV ();
1147		1771
1148	{	1772	{
1149	SV *sv = perl_get_sv("Coro::API", 1);	1773	SV *sv = perl_get_sv ("Coro::API", TRUE);
		1774	perl_get_sv ("Coro::API", TRUE); /* silence 5.10 warning */
1150		1775
1151	coroapi.schedule = api_schedule;	1776	coroapi.schedule = api_schedule;
1152	coroapi.cede = api_cede;	1777	coroapi.cede = api_cede;
		1778	coroapi.cede_notself = api_cede_notself;
1153	coroapi.ready = api_ready;	1779	coroapi.ready = api_ready;
		1780	coroapi.is_ready = api_is_ready;
1154	coroapi.nready = &coro_nready;	1781	coroapi.nready = &coro_nready;
1155	coroapi.current = coro_current;	1782	coroapi.current = coro_current;
1156		1783
1157	GCoroAPI = &coroapi;	1784	GCoroAPI = &coroapi;
1158	sv_setiv (sv, (IV)&coroapi);	1785	sv_setiv (sv, (IV)&coroapi);
1159	SvREADONLY_on (sv);	1786	SvREADONLY_on (sv);
1160	}	1787	}
1161	}	1788	}
		1789
		1790	void
		1791	_set_current (SV *current)
		1792	PROTOTYPE: $
		1793	CODE:
		1794	SvREFCNT_dec (SvRV (coro_current));
		1795	SvRV_set (coro_current, SvREFCNT_inc (SvRV (current)));
1162		1796
1163	int	1797	int
1164	prio (Coro::State coro, int newprio = 0)	1798	prio (Coro::State coro, int newprio = 0)
1165	ALIAS:	1799	ALIAS:
1166	nice = 1	1800	nice = 1
…		…
1169	RETVAL = coro->prio;	1803	RETVAL = coro->prio;
1170		1804
1171	if (items > 1)	1805	if (items > 1)
1172	{	1806	{
1173	if (ix)	1807	if (ix)
1174	newprio += coro->prio;	1808	newprio = coro->prio - newprio;
1175		1809
1176	if (newprio < PRIO_MIN) newprio = PRIO_MIN;	1810	if (newprio < PRIO_MIN) newprio = PRIO_MIN;
1177	if (newprio > PRIO_MAX) newprio = PRIO_MAX;	1811	if (newprio > PRIO_MAX) newprio = PRIO_MAX;
1178		1812
1179	coro->prio = newprio;	1813	coro->prio = newprio;
1180	}	1814	}
1181	}	1815	}
		1816	OUTPUT:
		1817	RETVAL
1182		1818
1183	void	1819	SV *
1184	ready (SV *self)	1820	ready (SV *self)
1185	PROTOTYPE: $	1821	PROTOTYPE: $
1186	CODE:	1822	CODE:
1187	api_ready (self);	1823	RETVAL = boolSV (api_ready (self));
		1824	OUTPUT:
		1825	RETVAL
1188		1826
1189	int	1827	int
1190	nready (...)	1828	nready (...)
1191	PROTOTYPE:	1829	PROTOTYPE:
1192	CODE:	1830	CODE:
1193	RETVAL = coro_nready;	1831	RETVAL = coro_nready;
1194	OUTPUT:	1832	OUTPUT:
1195	RETVAL	1833	RETVAL
1196		1834
		1835	void
		1836	throw (Coro::State self, SV *throw = &PL_sv_undef)
		1837	PROTOTYPE: $;$
		1838	CODE:
		1839	SvREFCNT_dec (self->throw);
		1840	self->throw = SvOK (throw) ? newSVsv (throw) : 0;
		1841
		1842	# for async_pool speedup
		1843	void
		1844	_pool_1 (SV *cb)
		1845	CODE:
		1846	{
		1847	struct coro *coro = SvSTATE (coro_current);
		1848	HV hv = (HV )SvRV (coro_current);
		1849	AV *defav = GvAV (PL_defgv);
		1850	SV *invoke = hv_delete (hv, strpair ("_invoke"), 0);
		1851	AV *invoke_av;
		1852	int i, len;
		1853
		1854	if (!invoke)
		1855	croak ("\3async_pool terminate\2\n");
		1856
		1857	SvREFCNT_dec (coro->saved_deffh);
		1858	coro->saved_deffh = SvREFCNT_inc ((SV *)PL_defoutgv);
		1859
		1860	hv_store (hv, "desc", sizeof ("desc") - 1,
		1861	newSVpvn (strpair ("[async_pool]")), 0);
		1862
		1863	invoke_av = (AV *)SvRV (invoke);
		1864	len = av_len (invoke_av);
		1865
		1866	sv_setsv (cb, AvARRAY (invoke_av)[0]);
		1867
		1868	if (len > 0)
		1869	{
		1870	av_fill (defav, len - 1);
		1871	for (i = 0; i < len; ++i)
		1872	av_store (defav, i, SvREFCNT_inc (AvARRAY (invoke_av)[i + 1]));
		1873	}
		1874
		1875	SvREFCNT_dec (invoke);
		1876	}
		1877
		1878	void
		1879	_pool_2 (SV *cb)
		1880	CODE:
		1881	{
		1882	struct coro *coro = SvSTATE (coro_current);
		1883
		1884	sv_setsv (cb, &PL_sv_undef);
		1885
		1886	SvREFCNT_dec ((SV )PL_defoutgv); PL_defoutgv = (GV )coro->saved_deffh;
		1887	coro->saved_deffh = 0;
		1888
		1889	if (coro_rss (aTHX_ coro) > SvIV (sv_pool_rss)
		1890	\|\| av_len (av_async_pool) + 1 >= SvIV (sv_pool_size))
		1891	croak ("\3async_pool terminate\2\n");
		1892
		1893	av_clear (GvAV (PL_defgv));
		1894	hv_store ((HV *)SvRV (coro_current), strpair ("desc"),
		1895	newSVpvn (strpair ("[async_pool idle]")), 0);
		1896
		1897	coro->prio = 0;
		1898
		1899	if (coro->cctx && (coro->cctx->flags & CC_TRACE))
		1900	api_trace (coro_current, 0);
		1901
		1902	av_push (av_async_pool, newSVsv (coro_current));
		1903	}
		1904
		1905
1197	MODULE = Coro::State PACKAGE = Coro::AIO	1906	MODULE = Coro::State PACKAGE = Coro::AIO
1198		1907
1199	SV *	1908	SV *
1200	_get_state ()	1909	_get_state ()
1201	CODE:	1910	CODE:
1202	{	1911	{
1203	struct {	1912	struct io_state *data;
1204	int errorno;
1205	int laststype;
1206	int laststatval;
1207	Stat_t statcache;
1208	} data;
1209		1913
		1914	RETVAL = newSV (sizeof (struct io_state));
		1915	data = (struct io_state *)SvPVX (RETVAL);
		1916	SvCUR_set (RETVAL, sizeof (struct io_state));
		1917	SvPOK_only (RETVAL);
		1918
1210	data.errorno = errno;	1919	data->errorno = errno;
1211	data.laststype = PL_laststype;	1920	data->laststype = PL_laststype;
1212	data.laststatval = PL_laststatval;	1921	data->laststatval = PL_laststatval;
1213	data.statcache = PL_statcache;	1922	data->statcache = PL_statcache;
1214
1215	RETVAL = newSVpvn ((char *)&data, sizeof data);
1216	}	1923	}
1217	OUTPUT:	1924	OUTPUT:
1218	RETVAL	1925	RETVAL
1219		1926
1220	void	1927	void
1221	_set_state (char *data_)	1928	_set_state (char *data_)
1222	PROTOTYPE: $	1929	PROTOTYPE: $
1223	CODE:	1930	CODE:
1224	{	1931	{
1225	struct {	1932	struct io_state data = (void )data_;
1226	int errorno;
1227	int laststype;
1228	int laststatval;
1229	Stat_t statcache;
1230	} data = (void )data_;
1231		1933
1232	errno = data->errorno;	1934	errno = data->errorno;
1233	PL_laststype = data->laststype;	1935	PL_laststype = data->laststype;
1234	PL_laststatval = data->laststatval;	1936	PL_laststatval = data->laststatval;
1235	PL_statcache = data->statcache;	1937	PL_statcache = data->statcache;
1236	}	1938	}
		1939

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Comparing Coro/Coro/State.xs (file contents): Revision 1.98 by root, Sun Nov 26 21:25:53 2006 UTC vs. Revision 1.202 by root, Mon Oct 8 02:50:23 2007 UTC

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Comparing Coro/Coro/State.xs (file contents):
Revision 1.98 by root, Sun Nov 26 21:25:53 2006 UTC vs.
Revision 1.202 by root, Mon Oct 8 02:50:23 2007 UTC