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

Comparing Coro/Coro/State.xs (file contents):
Revision 1.76 by root, Thu Oct 26 08:45:56 2006 UTC vs.
Revision 1.202 by root, Mon Oct 8 02:50:23 2007 UTC

…		…
		1	#include "libcoro/coro.c"
		2
1	#define PERL_NO_GET_CONTEXT	3	#define PERL_NO_GET_CONTEXT
2		4	#define PERL_EXT
3	#include "libcoro/coro.c"
4		5
5	#include "EXTERN.h"	6	#include "EXTERN.h"
6	#include "perl.h"	7	#include "perl.h"
7	#include "XSUB.h"	8	#include "XSUB.h"
8		9
9	#include "patchlevel.h"	10	#include "patchlevel.h"
10		11
11	#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)
12	# ifndef PL_ppaddr	56	# ifndef PL_ppaddr
13	# define PL_ppaddr ppaddr	57	# define PL_ppaddr ppaddr
14	# endif	58	# endif
15	# ifndef call_sv	59	# ifndef call_sv
16	# define call_sv perl_call_sv	60	# define call_sv perl_call_sv
27	# ifndef IS_PADCONST	71	# ifndef IS_PADCONST
28	# define IS_PADCONST(v) 0	72	# define IS_PADCONST(v) 0
29	# endif	73	# endif
30	#endif	74	#endif
31		75
32	#include <errno.h>	76	/* 5.8.7 */
33		77	#ifndef SvRV_set
34	#ifdef HAVE_MMAP	78	# define SvRV_set(s,v) SvRV(s) = (v)
35	# include <unistd.h>
36	# include <sys/mman.h>
37	# ifndef MAP_ANONYMOUS
38	# ifdef MAP_ANON
39	# define MAP_ANONYMOUS MAP_ANON
40	# else
41	# undef HAVE_MMAP
42	# endif
43	# endif	79	#endif
44	#endif
45		80
46	#define SUB_INIT "Coro::State::initialize"	81	/* 5.8.8 */
47	#define UCORO_STATE "_coro_state"	82	#ifndef GV_NOTQUAL
		83	# define GV_NOTQUAL 0
		84	#endif
		85	#ifndef newSV
		86	# define newSV(l) NEWSV(0,l)
		87	#endif
48		88
49	/* The next macro should declare a variable stacklevel that contains and approximation	89	#if !__i386 && !__x86_64 && !__powerpc && !__m68k && !__alpha && !__mips && !__sparc64
50	* to the current C stack pointer. Its property is that it changes with each call	90	# undef CORO_STACKGUARD
51	* and should be unique. */	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. */
		104	#define dSTACKLEVEL volatile char stacklevel
52	#define dSTACKLEVEL void *stacklevel = &stacklevel	105	#define STACKLEVEL ((void *)&stacklevel)
53		106
54	#define IN_DESTRUCT (PL_main_cv == Nullcv)	107	#define IN_DESTRUCT (PL_main_cv == Nullcv)
55		108
56	#define labs(l) ((l) >= 0 ? (l) : -(l))	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))
57		123
58	#include "CoroAPI.h"	124	#include "CoroAPI.h"
59		125
60	#ifdef USE_ITHREADS	126	#ifdef USE_ITHREADS
61	static perl_mutex coro_mutex;	127	static perl_mutex coro_mutex;
…		…
64	#else	130	#else
65	# define LOCK (void)0	131	# define LOCK (void)0
66	# define UNLOCK (void)0	132	# define UNLOCK (void)0
67	#endif	133	#endif
68		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;
69	static struct CoroAPI coroapi;	147	static struct CoroAPI coroapi;
70	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;
71	static HV *coro_state_stash;	150	static HV coro_state_stash, coro_stash;
72	static SV *ucoro_state_sv;
73	static U32 ucoro_state_hash;
74	static SV coro_mortal; / will be freed after next transfer */	151	static SV coro_mortal; / will be freed after next transfer */
75		152
76	/* this is actually not only the c stack but also c registers etc... */	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
		177	/* this is a structure representing a c-level coroutine */
		178	typedef struct coro_cctx {
		179	struct coro_cctx *next;
		180
		181	/* the stack */
		182	void *sptr;
		183	size_t ssize;
		184
		185	/* cpu state */
		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 */
		188	JMPENV *top_env;
		189	coro_context cctx;
		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 */
77	typedef struct {	205	typedef struct {
78	int refcnt; /* pointer reference counter */	206	SV *defsv;
79	int usecnt; /* shared by how many coroutines */	207	AV *defav;
80	int gencnt; /* generation counter */	208	SV *errsv;
		209	SV *irsgv;
		210	#define VAR(name,type) type name;
		211	# include "state.h"
		212	#undef VAR
		213	} perl_slots;
81		214
82	coro_context cctx;	215	#define SLOT_COUNT ((sizeof (perl_slots) + sizeof (PERL_CONTEXT) - 1) / sizeof (PERL_CONTEXT))
83		216
84	void *sptr;	217	/* this is a structure representing a perl-level coroutine */
85	long ssize; /* positive == mmap, otherwise malloc */
86	} coro_stack;
87
88	struct coro {	218	struct coro {
89	/* the top-level JMPENV for each coroutine, needed to catch dies. */	219	/* the c coroutine allocated to this perl coroutine, if any */
90	JMPENV start_env;	220	coro_cctx *cctx;
91		221
92	/* the optional C context */	222	/* process data */
93	coro_stack *stack;
94	void *cursp;
95	int gencnt;
96
97	/* optionally saved, might be zero */
98	AV *defav;
99	SV *defsv;
100	SV *errsv;
101
102	/* saved global state not related to stacks */
103	U8 dowarn;
104	I32 in_eval;
105
106	/* the stacks and related info (callchain etc..) */
107	PERL_SI *curstackinfo;
108	AV *curstack;
109	AV *mainstack;	223	AV *mainstack;
110	SV **stack_sp;	224	perl_slots slot; / basically the saved sp */
111	OP *op;
112	SV **curpad;
113	AV *comppad;
114	CV *compcv;
115	SV **stack_base;
116	SV **stack_max;
117	SV **tmps_stack;
118	I32 tmps_floor;
119	I32 tmps_ix;
120	I32 tmps_max;
121	I32 *markstack;
122	I32 *markstack_ptr;
123	I32 *markstack_max;
124	I32 *scopestack;
125	I32 scopestack_ix;
126	I32 scopestack_max;
127	ANY *savestack;
128	I32 savestack_ix;
129	I32 savestack_max;
130	OP **retstack;
131	I32 retstack_ix;
132	I32 retstack_max;
133	PMOP *curpm;
134	COP *curcop;
135	JMPENV *top_env;
136		225
137	/* data associated with this coroutine (initial args) */	226	/* data associated with this coroutine (initial args) */
138	AV *args;	227	AV *args;
		228	int refcnt;
		229	int flags; /* CF_ flags */
		230
		231	/* statistics */
		232	int usecount; /* number of transfers to this coro */
		233
		234	/* coro process data */
		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 */
139	};	244	};
140		245
141	typedef struct coro *Coro__State;	246	typedef struct coro *Coro__State;
142	typedef struct coro *Coro__State_or_hashref;	247	typedef struct coro *Coro__State_or_hashref;
143		248
144	/* mostly copied from op.c:cv_clone2 */	249	/ Coro ******************************************************************/
145	STATIC AV *	250
146	clone_padlist (pTHX_ AV *protopadlist)	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)
147	{	268	{
148	AV *av;	269	#if PERL_VERSION_ATLEAST (5,9,0)
149	I32 ix;	270	/* silence stupid and wrong 5.10 warning that I am unable to switch off */
150	AV protopad_name = (AV ) * av_fetch (protopadlist, 0, FALSE);	271	get_sv (name, create);
151	AV protopad = (AV ) * av_fetch (protopadlist, 1, FALSE);	272	#endif
152	SV **pname = AvARRAY (protopad_name);	273	return get_sv (name, create);
153	SV **ppad = AvARRAY (protopad);	274	}
154	I32 fname = AvFILLp (protopad_name);	275
155	I32 fpad = AvFILLp (protopad);	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 *
		297	coro_clone_padlist (pTHX_ CV *cv)
		298	{
		299	AV *padlist = CvPADLIST (cv);
156	AV newpadlist, newpad_name, *newpad;	300	AV newpadlist, newpad;
157	SV **npad;
158
159	newpad_name = newAV ();
160	for (ix = fname; ix >= 0; ix--)
161	av_store (newpad_name, ix, SvREFCNT_inc (pname[ix]));
162
163	newpad = newAV ();
164	av_fill (newpad, AvFILLp (protopad));
165	npad = AvARRAY (newpad);
166		301
167	newpadlist = newAV ();	302	newpadlist = newAV ();
168	AvREAL_off (newpadlist);	303	AvREAL_off (newpadlist);
169	av_store (newpadlist, 0, (SV *) newpad_name);	304	#if PERL_VERSION_ATLEAST (5,9,0)
		305	Perl_pad_push (aTHX_ padlist, AvFILLp (padlist) + 1);
		306	#else
		307	Perl_pad_push (aTHX_ padlist, AvFILLp (padlist) + 1, 1);
		308	#endif
		309	newpad = (AV *)AvARRAY (padlist)[AvFILLp (padlist)];
		310	--AvFILLp (padlist);
		311
		312	av_store (newpadlist, 0, SvREFCNT_inc (*av_fetch (padlist, 0, FALSE)));
170	av_store (newpadlist, 1, (SV *) newpad);	313	av_store (newpadlist, 1, (SV *)newpad);
171
172	av = newAV (); /* will be @_ */
173	av_extend (av, 0);
174	av_store (newpad, 0, (SV *) av);
175	AvREIFY_on (av);
176
177	for (ix = fpad; ix > 0; ix--)
178	{
179	SV *namesv = (ix <= fname) ? pname[ix] : Nullsv;
180
181	if (namesv && namesv != &PL_sv_undef)
182	{
183	char name = SvPVX (namesv); / XXX */
184
185	if (SvFLAGS (namesv) & SVf_FAKE \|\| *name == '&')
186	{ /* lexical from outside? */
187	npad[ix] = SvREFCNT_inc (ppad[ix]);
188	}
189	else
190	{ /* our own lexical */
191	SV *sv;
192	if (*name == '&')
193	sv = SvREFCNT_inc (ppad[ix]);
194	else if (*name == '@')
195	sv = (SV *) newAV ();
196	else if (*name == '%')
197	sv = (SV *) newHV ();
198	else
199	sv = NEWSV (0, 0);
200
201	#ifdef SvPADBUSY
202	if (!SvPADBUSY (sv))
203	#endif
204	SvPADMY_on (sv);
205
206	npad[ix] = sv;
207	}
208	}
209	else if (IS_PADGV (ppad[ix]) \|\| IS_PADCONST (ppad[ix]))
210	{
211	npad[ix] = SvREFCNT_inc (ppad[ix]);
212	}
213	else
214	{
215	SV *sv = NEWSV (0, 0);
216	SvPADTMP_on (sv);
217	npad[ix] = sv;
218	}
219	}
220
221	#if 0 /* return -ENOTUNDERSTOOD */
222	/* Now that vars are all in place, clone nested closures. */
223
224	for (ix = fpad; ix > 0; ix--) {
225	SV* namesv = (ix <= fname) ? pname[ix] : Nullsv;
226	if (namesv
227	&& namesv != &PL_sv_undef
228	&& !(SvFLAGS(namesv) & SVf_FAKE)
229	&& *SvPVX(namesv) == '&'
230	&& CvCLONE(ppad[ix]))
231	{
232	CV kid = cv_clone((CV)ppad[ix]);
233	SvREFCNT_dec(ppad[ix]);
234	CvCLONE_on(kid);
235	SvPADMY_on(kid);
236	npad[ix] = (SV*)kid;
237	}
238	}
239	#endif
240		314
241	return newpadlist;	315	return newpadlist;
242	}	316	}
243		317
244	STATIC void	318	static void
245	free_padlist (pTHX_ AV *padlist)	319	free_padlist (pTHX_ AV *padlist)
246	{	320	{
247	/* may be during global destruction */	321	/* may be during global destruction */
248	if (SvREFCNT (padlist))	322	if (SvREFCNT (padlist))
249	{	323	{
…		…
263		337
264	SvREFCNT_dec ((SV*)padlist);	338	SvREFCNT_dec ((SV*)padlist);
265	}	339	}
266	}	340	}
267		341
268	STATIC int	342	static int
269	coro_cv_free (pTHX_ SV sv, MAGIC mg)	343	coro_cv_free (pTHX_ SV sv, MAGIC mg)
270	{	344	{
271	AV *padlist;	345	AV *padlist;
272	AV av = (AV )mg->mg_obj;	346	AV av = (AV )mg->mg_obj;
273		347
…		…
282		356
283	#define PERL_MAGIC_coro PERL_MAGIC_ext	357	#define PERL_MAGIC_coro PERL_MAGIC_ext
284		358
285	static MGVTBL vtbl_coro = {0, 0, 0, 0, coro_cv_free};	359	static MGVTBL vtbl_coro = {0, 0, 0, 0, coro_cv_free};
286		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
287	/* the next two functions merely cache the padlists */	394	/* the next two functions merely cache the padlists */
288	STATIC void	395	static void
289	get_padlist (pTHX_ CV *cv)	396	get_padlist (pTHX_ CV *cv)
290	{	397	{
291	MAGIC mg = mg_find ((SV )cv, PERL_MAGIC_coro);	398	MAGIC *mg = CORO_MAGIC (cv);
		399	AV *av;
292		400
293	if (mg && AvFILLp ((AV *)mg->mg_obj) >= 0)	401	if (expect_true (mg && AvFILLp ((av = (AV *)mg->mg_obj)) >= 0))
294	CvPADLIST (cv) = (AV )av_pop ((AV )mg->mg_obj);	402	CvPADLIST (cv) = (AV *)AvARRAY (av)[AvFILLp (av)--];
295	else	403	else
		404	{
		405	#if CORO_PREFER_PERL_FUNCTIONS
		406	/* this is probably cleaner, but also slower? */
		407	CV *cp = Perl_cv_clone (cv);
		408	CvPADLIST (cv) = CvPADLIST (cp);
		409	CvPADLIST (cp) = 0;
		410	SvREFCNT_dec (cp);
		411	#else
296	CvPADLIST (cv) = clone_padlist (aTHX_ CvPADLIST (cv));	412	CvPADLIST (cv) = coro_clone_padlist (aTHX_ cv);
		413	#endif
		414	}
297	}	415	}
298		416
299	STATIC void	417	static void
300	put_padlist (pTHX_ CV *cv)	418	put_padlist (pTHX_ CV *cv)
301	{	419	{
302	MAGIC mg = mg_find ((SV )cv, PERL_MAGIC_coro);	420	MAGIC *mg = CORO_MAGIC (cv);
		421	AV *av;
303		422
304	if (!mg)	423	if (expect_false (!mg))
305	{	424	{
306	sv_magic ((SV *)cv, 0, PERL_MAGIC_coro, 0, 0);	425	sv_magic ((SV *)cv, 0, PERL_MAGIC_coro, 0, 0);
307	mg = mg_find ((SV *)cv, PERL_MAGIC_coro);	426	mg = mg_find ((SV *)cv, PERL_MAGIC_coro);
308	mg->mg_virtual = &vtbl_coro;	427	mg->mg_virtual = &vtbl_coro;
309	mg->mg_obj = (SV *)newAV ();	428	mg->mg_obj = (SV *)newAV ();
310	}	429	}
311		430
312	av_push ((AV )mg->mg_obj, (SV )CvPADLIST (cv));	431	av = (AV *)mg->mg_obj;
313	}
314		432
315	#define SB do {	433	if (expect_false (AvFILLp (av) >= AvMAX (av)))
316	#define SE } while (0)	434	av_extend (av, AvMAX (av) + 1);
317		435
318	#define LOAD(state) load_state(aTHX_ (state));	436	AvARRAY (av)[++AvFILLp (av)] = (SV *)CvPADLIST (cv);
319	#define SAVE(state,flags) save_state(aTHX_ (state),(flags));	437	}
320		438
321	#define REPLACE_SV(sv,val) SB SvREFCNT_dec(sv); (sv) = (val); (val) = 0; SE	439	/ load & save, init *****************************************************/
322		440
323	static void	441	static void
324	load_state(pTHX_ Coro__State c)	442	load_perl (pTHX_ Coro__State c)
325	{	443	{
326	PL_dowarn = c->dowarn;	444	perl_slots *slot = c->slot;
327	PL_in_eval = c->in_eval;	445	c->slot = 0;
328		446
329	PL_curstackinfo = c->curstackinfo;
330	PL_curstack = c->curstack;
331	PL_mainstack = c->mainstack;	447	PL_mainstack = c->mainstack;
332	PL_stack_sp = c->stack_sp;
333	PL_op = c->op;
334	PL_curpad = c->curpad;
335	PL_comppad = c->comppad;
336	PL_compcv = c->compcv;
337	PL_stack_base = c->stack_base;
338	PL_stack_max = c->stack_max;
339	PL_tmps_stack = c->tmps_stack;
340	PL_tmps_floor = c->tmps_floor;
341	PL_tmps_ix = c->tmps_ix;
342	PL_tmps_max = c->tmps_max;
343	PL_markstack = c->markstack;
344	PL_markstack_ptr = c->markstack_ptr;
345	PL_markstack_max = c->markstack_max;
346	PL_scopestack = c->scopestack;
347	PL_scopestack_ix = c->scopestack_ix;
348	PL_scopestack_max = c->scopestack_max;
349	PL_savestack = c->savestack;
350	PL_savestack_ix = c->savestack_ix;
351	PL_savestack_max = c->savestack_max;
352	#if PERL_VERSION < 9
353	PL_retstack = c->retstack;
354	PL_retstack_ix = c->retstack_ix;
355	PL_retstack_max = c->retstack_max;
356	#endif
357	PL_curpm = c->curpm;
358	PL_curcop = c->curcop;
359	PL_top_env = c->top_env;
360		448
361	if (c->defav) REPLACE_SV (GvAV (PL_defgv), c->defav);	449	GvSV (PL_defgv) = slot->defsv;
362	if (c->defsv) REPLACE_SV (DEFSV , c->defsv);	450	GvAV (PL_defgv) = slot->defav;
363	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);/
364		460
365	{	461	{
366	dSP;	462	dSP;
		463
367	CV *cv;	464	CV *cv;
368		465
369	/* now do the ugly restore mess */	466	/* now do the ugly restore mess */
370	while ((cv = (CV *)POPs))	467	while (expect_true (cv = (CV *)POPs))
371	{	468	{
372	AV padlist = (AV )POPs;
373
374	if (padlist)
375	{
376	put_padlist (aTHX_ cv); /* mark this padlist as available */	469	put_padlist (aTHX_ cv); /* mark this padlist as available */
377	CvPADLIST(cv) = padlist;	470	CvDEPTH (cv) = PTR2IV (POPs);
378	}	471	CvPADLIST (cv) = (AV *)POPs;
379
380	++CvDEPTH(cv);
381	}	472	}
382		473
383	PUTBACK;	474	PUTBACK;
384	}	475	}
385	}	476	}
386		477
387	static void	478	static void
388	save_state(pTHX_ Coro__State c, int flags)	479	save_perl (pTHX_ Coro__State c)
389	{	480	{
390	{	481	{
391	dSP;	482	dSP;
392	I32 cxix = cxstack_ix;	483	I32 cxix = cxstack_ix;
393	PERL_CONTEXT *ccstk = cxstack;	484	PERL_CONTEXT *ccstk = cxstack;
…		…
396	/*	487	/*
397	* 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
398	* (and reinitialize) all cv's in the whole callchain :(	489	* (and reinitialize) all cv's in the whole callchain :(
399	*/	490	*/
400		491
401	PUSHs (Nullsv);	492	XPUSHs (Nullsv);
402	/* this loop was inspired by pp_caller */	493	/* this loop was inspired by pp_caller */
403	for (;;)	494	for (;;)
404	{	495	{
405	while (cxix >= 0)	496	while (expect_true (cxix >= 0))
406	{	497	{
407	PERL_CONTEXT *cx = &ccstk[cxix--];	498	PERL_CONTEXT *cx = &ccstk[cxix--];
408		499
409	if (CxTYPE(cx) == CXt_SUB)	500	if (expect_true (CxTYPE (cx) == CXt_SUB \|\| CxTYPE (cx) == CXt_FORMAT))
410	{	501	{
411	CV *cv = cx->blk_sub.cv;	502	CV *cv = cx->blk_sub.cv;
		503
412	if (CvDEPTH(cv))	504	if (expect_true (CvDEPTH (cv)))
413	{	505	{
414	EXTEND (SP, CvDEPTH(cv)*2);	506	EXTEND (SP, 3);
415
416	while (--CvDEPTH(cv))
417	{
418	/* this tells the restore code to increment CvDEPTH */
419	PUSHs (Nullsv);
420	PUSHs ((SV *)cv);
421	}
422
423	PUSHs ((SV *)CvPADLIST(cv));	507	PUSHs ((SV *)CvPADLIST (cv));
		508	PUSHs (INT2PTR (SV *, CvDEPTH (cv)));
424	PUSHs ((SV *)cv);	509	PUSHs ((SV *)cv);
425		510
		511	CvDEPTH (cv) = 0;
426	get_padlist (aTHX_ cv); /* this is a monster */	512	get_padlist (aTHX_ cv);
427	}	513	}
428	}	514	}
429	#ifdef CXt_FORMAT
430	else if (CxTYPE(cx) == CXt_FORMAT)
431	{
432	/* I never used formats, so how should I know how these are implemented? */
433	/* my bold guess is as a simple, plain sub... */
434	croak ("CXt_FORMAT not yet handled. Don't switch coroutines from within formats");
435	}
436	#endif
437	}	515	}
438		516
439	if (top_si->si_type == PERLSI_MAIN)	517	if (expect_true (top_si->si_type == PERLSI_MAIN))
440	break;	518	break;
441		519
442	top_si = top_si->si_prev;	520	top_si = top_si->si_prev;
443	ccstk = top_si->si_cxstack;	521	ccstk = top_si->si_cxstack;
444	cxix = top_si->si_cxix;	522	cxix = top_si->si_cxix;
445	}	523	}
446		524
447	PUTBACK;	525	PUTBACK;
448	}	526	}
449		527
450	c->defav = flags & TRANSFER_SAVE_DEFAV ? (AV *)SvREFCNT_inc (GvAV (PL_defgv)) : 0;	528	/* allocate some space on the context stack for our purposes */
451	c->defsv = flags & TRANSFER_SAVE_DEFSV ? SvREFCNT_inc (DEFSV) : 0;	529	/* we manually unroll here, as usually 2 slots is enough */
452	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 */
453		539
454	c->dowarn = PL_dowarn;
455	c->in_eval = PL_in_eval;
456
457	c->curstackinfo = PL_curstackinfo;
458	c->curstack = PL_curstack;
459	c->mainstack = PL_mainstack;	540	c->mainstack = PL_mainstack;
460	c->stack_sp = PL_stack_sp;	541
461	c->op = PL_op;	542	{
462	c->curpad = PL_curpad;	543	perl_slots slot = c->slot = (perl_slots )(cxstack + cxstack_ix + 1);
463	c->comppad = PL_comppad;	544
464	c->compcv = PL_compcv;	545	slot->defav = GvAV (PL_defgv);
465	c->stack_base = PL_stack_base;	546	slot->defsv = DEFSV;
466	c->stack_max = PL_stack_max;	547	slot->errsv = ERRSV;
467	c->tmps_stack = PL_tmps_stack;	548	slot->irsgv = GvSV (irsgv);
468	c->tmps_floor = PL_tmps_floor;	549
469	c->tmps_ix = PL_tmps_ix;	550	#define VAR(name,type) slot->name = PL_ ## name;
470	c->tmps_max = PL_tmps_max;	551	# include "state.h"
471	c->markstack = PL_markstack;	552	#undef VAR
472	c->markstack_ptr = PL_markstack_ptr;	553	}
473	c->markstack_max = PL_markstack_max;
474	c->scopestack = PL_scopestack;
475	c->scopestack_ix = PL_scopestack_ix;
476	c->scopestack_max = PL_scopestack_max;
477	c->savestack = PL_savestack;
478	c->savestack_ix = PL_savestack_ix;
479	c->savestack_max = PL_savestack_max;
480	#if PERL_VERSION < 9
481	c->retstack = PL_retstack;
482	c->retstack_ix = PL_retstack_ix;
483	c->retstack_max = PL_retstack_max;
484	#endif
485	c->curpm = PL_curpm;
486	c->curcop = PL_curcop;
487	c->top_env = PL_top_env;
488	}	554	}
489		555
490	/*	556	/*
491	* allocate various perl stacks. This is an exact copy	557	* allocate various perl stacks. This is an exact copy
492	* of perl.c:init_stacks, except that it uses less memory	558	* of perl.c:init_stacks, except that it uses less memory
493	* on the (sometimes correct) assumption that coroutines do	559	* on the (sometimes correct) assumption that coroutines do
494	* not usually need a lot of stackspace.	560	* not usually need a lot of stackspace.
495	*/	561	*/
496	STATIC void	562	#if 1
		563	# define coro_init_stacks init_stacks
		564	#else
		565	static void
497	coro_init_stacks (pTHX)	566	coro_init_stacks (pTHX)
498	{	567	{
499	LOCK;	568	PL_curstackinfo = new_stackinfo(32, 8);
500
501	PL_curstackinfo = new_stackinfo(96, 1024/sizeof(PERL_CONTEXT) - 1);
502	PL_curstackinfo->si_type = PERLSI_MAIN;	569	PL_curstackinfo->si_type = PERLSI_MAIN;
503	PL_curstack = PL_curstackinfo->si_stack;	570	PL_curstack = PL_curstackinfo->si_stack;
504	PL_mainstack = PL_curstack; /* remember in case we switch stacks */	571	PL_mainstack = PL_curstack; /* remember in case we switch stacks */
505		572
506	PL_stack_base = AvARRAY(PL_curstack);	573	PL_stack_base = AvARRAY(PL_curstack);
507	PL_stack_sp = PL_stack_base;	574	PL_stack_sp = PL_stack_base;
508	PL_stack_max = PL_stack_base + AvMAX(PL_curstack);	575	PL_stack_max = PL_stack_base + AvMAX(PL_curstack);
509		576
510	New(50,PL_tmps_stack,96,SV*);	577	New(50,PL_tmps_stack,32,SV*);
511	PL_tmps_floor = -1;	578	PL_tmps_floor = -1;
512	PL_tmps_ix = -1;	579	PL_tmps_ix = -1;
513	PL_tmps_max = 96;	580	PL_tmps_max = 32;
514		581
515	New(54,PL_markstack,16,I32);	582	New(54,PL_markstack,16,I32);
516	PL_markstack_ptr = PL_markstack;	583	PL_markstack_ptr = PL_markstack;
517	PL_markstack_max = PL_markstack + 16;	584	PL_markstack_max = PL_markstack + 16;
518		585
519	#ifdef SET_MARK_OFFSET	586	#ifdef SET_MARK_OFFSET
520	SET_MARK_OFFSET;	587	SET_MARK_OFFSET;
521	#endif	588	#endif
522		589
523	New(54,PL_scopestack,16,I32);	590	New(54,PL_scopestack,8,I32);
524	PL_scopestack_ix = 0;	591	PL_scopestack_ix = 0;
525	PL_scopestack_max = 16;	592	PL_scopestack_max = 8;
526		593
527	New(54,PL_savestack,96,ANY);	594	New(54,PL_savestack,24,ANY);
528	PL_savestack_ix = 0;	595	PL_savestack_ix = 0;
529	PL_savestack_max = 96;	596	PL_savestack_max = 24;
530		597
531	#if PERL_VERSION < 9	598	#if !PERL_VERSION_ATLEAST (5,9,0)
532	New(54,PL_retstack,8,OP*);	599	New(54,PL_retstack,4,OP*);
533	PL_retstack_ix = 0;	600	PL_retstack_ix = 0;
534	PL_retstack_max = 8;	601	PL_retstack_max = 4;
535	#endif	602	#endif
536
537	UNLOCK;
538	}	603	}
		604	#endif
539		605
540	/*	606	/*
541	* destroy the stacks, the callchain etc...	607	* destroy the stacks, the callchain etc...
542	*/	608	*/
543	STATIC void	609	static void
544	destroy_stacks(pTHX)	610	coro_destroy_stacks (pTHX)
545	{	611	{
546	if (!IN_DESTRUCT)
547	{
548	/* is this ugly, I ask? */
549	LEAVE_SCOPE (0);
550
551	/* sure it is, but more important: is it correct?? :/ */
552	FREETMPS;
553
554	/POPSTACK_TO (PL_mainstack);//D//use/
555	}
556
557	while (PL_curstackinfo->si_next)	612	while (PL_curstackinfo->si_next)
558	PL_curstackinfo = PL_curstackinfo->si_next;	613	PL_curstackinfo = PL_curstackinfo->si_next;
559		614
560	while (PL_curstackinfo)	615	while (PL_curstackinfo)
561	{	616	{
562	PERL_SI *p = PL_curstackinfo->si_prev;	617	PERL_SI *p = PL_curstackinfo->si_prev;
563		618
564	{ /D//remove/
565	dSP;
566	SWITCHSTACK (PL_curstack, PL_curstackinfo->si_stack);
567	PUTBACK; /* possibly superfluous */
568	}
569
570	if (!IN_DESTRUCT)	619	if (!IN_DESTRUCT)
571	{
572	dounwind (-1);/D//remove/
573	SvREFCNT_dec (PL_curstackinfo->si_stack);	620	SvREFCNT_dec (PL_curstackinfo->si_stack);
574	}
575		621
576	Safefree (PL_curstackinfo->si_cxstack);	622	Safefree (PL_curstackinfo->si_cxstack);
577	Safefree (PL_curstackinfo);	623	Safefree (PL_curstackinfo);
578	PL_curstackinfo = p;	624	PL_curstackinfo = p;
579	}	625	}
580		626
581	Safefree (PL_tmps_stack);	627	Safefree (PL_tmps_stack);
582	Safefree (PL_markstack);	628	Safefree (PL_markstack);
583	Safefree (PL_scopestack);	629	Safefree (PL_scopestack);
584	Safefree (PL_savestack);	630	Safefree (PL_savestack);
585	#if PERL_VERSION < 9	631	#if !PERL_VERSION_ATLEAST (5,9,0)
586	Safefree (PL_retstack);	632	Safefree (PL_retstack);
587	#endif	633	#endif
588	}	634	}
589		635
590	static void	636	static size_t
591	allocate_stack (Coro__State ctx, int alloc)	637	coro_rss (pTHX_ struct coro *coro)
592	{	638	{
593	coro_stack *stack;	639	size_t rss = sizeof (*coro);
594		640
595	New (0, stack, 1, coro_stack);	641	if (coro->mainstack)
596
597	stack->refcnt = 1;
598	stack->usecnt = 1;
599	stack->gencnt = ctx->gencnt = 0;
600
601	if (alloc)
602	{	642	{
603	#if HAVE_MMAP	643	perl_slots tmp_slot;
604	stack->ssize = STACKSIZE * sizeof (long); /* mmap should do allocate-on-write for us */	644	perl_slots *slot;
605	stack->sptr = mmap (0, stack->ssize, PROT_EXEC\|PROT_READ\|PROT_WRITE, MAP_PRIVATE\|MAP_ANONYMOUS, 0, 0);	645
606	if (stack->sptr == (void *)-1)	646	if (coro->flags & CF_RUNNING)
607	#endif
608	{	647	{
609	stack->ssize = - (STACKSIZE * (long)sizeof (long));	648	slot = &tmp_slot;
610	New (0, stack->sptr, STACKSIZE, long);	649
		650	#define VAR(name,type) slot->name = PL_ ## name;
		651	# include "state.h"
		652	#undef VAR
611	}	653	}
612	}
613	else
614	stack->sptr = 0;
615
616	ctx->stack = stack;
617	}
618
619	static void
620	deallocate_stack (Coro__State ctx)
621	{
622	coro_stack *stack = ctx->stack;
623
624	ctx->stack = 0;
625
626	if (stack)
627	{
628	if (!--stack->refcnt)
629	{
630	#ifdef HAVE_MMAP
631	if (stack->ssize > 0 && stack->sptr)
632	munmap (stack->sptr, stack->ssize);
633	else	654	else
634	#endif	655	slot = coro->slot;
635	Safefree (stack->sptr);
636		656
637	Safefree (stack);	657	rss += sizeof (slot->curstackinfo);
638	}	658	rss += (slot->curstackinfo->si_cxmax + 1) * sizeof (PERL_CONTEXT);
639	else if (ctx->gencnt == stack->gencnt)	659	rss += sizeof (SV) + sizeof (struct xpvav) + (1 + AvMAX (slot->curstack)) * sizeof (SV *);
640	--stack->usecnt;	660	rss += slot->tmps_max * sizeof (SV *);
641	}	661	rss += (slot->markstack_max - slot->markstack_ptr) * sizeof (I32);
642	}	662	rss += slot->scopestack_max * sizeof (I32);
		663	rss += slot->savestack_max * sizeof (ANY);
643		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
644	static void	675	static void
645	setup_coro (void *arg)	676	coro_setup (pTHX_ struct coro *coro)
646	{	677	{
647	/*	678	/*
648	* emulate part of the perl startup here.	679	* emulate part of the perl startup here.
649	*/	680	*/
		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	{
		897	dSP;
		898	LOGOP myop;
		899
		900	PL_top_env = &PL_start_env;
		901
		902	if (cctx->flags & CC_TRACE)
		903	PL_runops = runops_trace;
		904
		905	Zero (&myop, 1, LOGOP);
		906	myop.op_next = PL_op;
		907	myop.op_flags = OPf_WANT_VOID \| OPf_STACKED;
		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;
		914	PL_op = (OP *)&myop;
		915	PL_op = PL_ppaddr[OP_ENTERSUB](aTHX);
		916	SPAGAIN;
		917	}
		918
		919	/*
		920	* this is a _very_ stripped down perl interpreter ;)
		921	*/
		922	static void
		923	cctx_run (void *arg)
		924	{
650	dTHX;	925	dTHX;
651	dSP;
652	Coro__State ctx = (Coro__State)arg;
653	SV sub_init = (SV )get_cv (SUB_INIT, FALSE);
654		926
655	coro_init_stacks (aTHX);	927	/* cctx_run is the alternative tail of transfer(), so unlock here. */
656	/PL_curcop = 0;/	928	UNLOCK;
657	/PL_in_eval = PL_in_eval;/ /* inherit */
658	SvREFCNT_dec (GvAV (PL_defgv));
659	GvAV (PL_defgv) = ctx->args; ctx->args = 0;
660		929
661	SPAGAIN;	930	/* we now skip the entersub that lead to transfer() */
		931	PL_op = PL_op->op_next;
662		932
663	if (ctx->stack)	933	/* inject a fake subroutine call to cctx_init */
664	{	934	cctx_prepare (aTHX_ (coro_cctx *)arg);
665	ctx->cursp = 0;
666		935
667	PUSHMARK(SP);	936	/* somebody or something will hit me for both perl_run and PL_restartop */
668	PUTBACK;	937	PL_restartop = PL_op;
669	(void) call_sv (sub_init, G_VOID\|G_NOARGS\|G_EVAL);	938	perl_run (PL_curinterp);
670		939
671	if (SvTRUE (ERRSV))	940	/*
672	croak (NULL);	941	* If perl-run returns we assume exit() was being called or the coro
673	else	942	* fell off the end, which seems to be the only valid (non-bug)
674	croak ("FATAL: CCTXT coroutine returned!");	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
		946	*/
		947	PL_top_env = main_top_env;
		948	JMPENV_JUMP (2); /* I do not feel well about the hardcoded 2 at all */
		949	}
		950
		951	static coro_cctx *
		952	cctx_new ()
		953	{
		954	coro_cctx *cctx;
		955	void *stack_start;
		956	size_t stack_size;
		957
		958	++cctx_count;
		959
		960	Newz (0, cctx, 1, coro_cctx);
		961
		962	#if HAVE_MMAP
		963	cctx->ssize = ((coro_stacksize * sizeof (long) + PAGESIZE - 1) / PAGESIZE + CORO_STACKGUARD) * PAGESIZE;
		964	/* mmap supposedly does allocate-on-write for us */
		965	cctx->sptr = mmap (0, cctx->ssize, PROT_EXEC\|PROT_READ\|PROT_WRITE, MAP_PRIVATE\|MAP_ANONYMOUS, 0, 0);
		966
		967	if (cctx->sptr != (void *)-1)
		968	{
		969	# if CORO_STACKGUARD
		970	mprotect (cctx->sptr, CORO_STACKGUARD * PAGESIZE, PROT_NONE);
		971	# endif
		972	stack_start = CORO_STACKGUARD * PAGESIZE + (char *)cctx->sptr;
		973	stack_size = cctx->ssize - CORO_STACKGUARD * PAGESIZE;
		974	cctx->flags \|= CC_MAPPED;
675	}	975	}
676	else	976	else
677	{	977	#endif
678	UNOP myop;
679
680	PL_op = (OP *)&myop;
681
682	Zero(&myop, 1, UNOP);
683	myop.op_next = Nullop;
684	myop.op_flags = OPf_WANT_VOID;
685
686	PUSHMARK(SP);
687	XPUSHs (sub_init);
688	/*
689	* the next line is slightly wrong, as PL_op->op_next
690	* is actually being executed so we skip the first op.
691	* that doesn't matter, though, since it is only
692	* pp_nextstate and we never return...
693	* ah yes, and I don't care anyways ;)
694	*/
695	PUTBACK;
696	PL_op = PL_ppaddr[OP_ENTERSUB](aTHX);
697	SPAGAIN;
698
699	ENTER; /* necessary e.g. for dounwind */
700	}	978	{
701	}	979	cctx->ssize = coro_stacksize * (long)sizeof (long);
		980	New (0, cctx->sptr, coro_stacksize, long);
702		981
703	static void	982	if (!cctx->sptr)
704	continue_coro (void *arg)	983	{
705	{	984	perror ("FATAL: unable to allocate stack for coroutine");
706	/*	985	_exit (EXIT_FAILURE);
707	* this is a _very_ stripped down perl interpreter ;)	986	}
708	*/
709	dTHX;
710	Coro__State ctx = (Coro__State)arg;
711		987
712	PL_top_env = &ctx->start_env;	988	stack_start = cctx->sptr;
		989	stack_size = cctx->ssize;
		990	}
713		991
714	ctx->cursp = 0;	992	REGISTER_STACK (cctx, (char )stack_start, (char )stack_start + stack_size);
715	PL_op = PL_op->op_next;	993	coro_create (&cctx->cctx, cctx_run, (void *)cctx, stack_start, stack_size);
716	CALLRUNOPS(aTHX);
717		994
718	abort ();	995	return cctx;
719	}	996	}
720		997
721	STATIC void	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)
		1078	#else
		1079	expect_false (PL_lex_state != LEX_NOTPARSING)
		1080	#endif
		1081	)
		1082	croak ("Coro::State::transfer called while parsing, but this is not supported");
		1083	}
		1084	}
		1085
		1086	/* always use the TRANSFER macro */
		1087	static void NOINLINE
722	transfer (pTHX_ struct coro prev, struct coro next, int flags)	1088	transfer (pTHX_ struct coro prev, struct coro next)
723	{	1089	{
724	dSTACKLEVEL;	1090	dSTACKLEVEL;
725		1091
726	if (prev != next)	1092	/* sometimes transfer is only called to set idle_sp */
		1093	if (expect_false (!next))
		1094	{
		1095	((coro_cctx *)prev)->idle_sp = STACKLEVEL;
		1096	assert (((coro_cctx )prev)->idle_te = PL_top_env); / just for the side-effect when asserts are enabled */
727	{	1097	}
728	if (next->mainstack)	1098	else if (expect_true (prev != next))
		1099	{
		1100	coro_cctx *prev__cctx;
		1101
		1102	if (expect_false (prev->flags & CF_NEW))
729	{	1103	{
730	LOCK;	1104	/* create a new empty context */
731	SAVE (prev, flags);	1105	Newz (0, prev->cctx, 1, coro_cctx);
732	LOAD (next);	1106	prev->flags &= ~CF_NEW;
733	UNLOCK;	1107	prev->flags \|= CF_RUNNING;
734
735	/* mark this state as in-use */
736	next->mainstack = 0;
737	next->tmps_ix = -2;
738
739	/* stacklevel changed? if yes, grab the stack for us! */
740	if (flags & TRANSFER_SAVE_CCTXT)
741	{
742	if (!prev->stack)
743	allocate_stack (prev, 0);
744	else if (prev->cursp != stacklevel
745	&& prev->stack->usecnt > 1)
746	{
747	prev->gencnt = ++prev->stack->gencnt;
748	prev->stack->usecnt = 1;
749	}
750
751	/* has our stack been invalidated? */
752	if (next->stack && next->stack->gencnt != next->gencnt)
753	{
754	deallocate_stack (next);
755	allocate_stack (next, 1);
756	coro_create (&(next->stack->cctx),
757	continue_coro, (void *)next,
758	next->stack->sptr, labs (next->stack->ssize));
759	}
760
761	coro_transfer (&(prev->stack->cctx), &(next->stack->cctx));
762	prev->cursp = stacklevel;
763	/* don't add any code here */
764	}
765	else
766	next->cursp = stacklevel;
767	}	1108	}
768	else if (next->tmps_ix == -2)	1109
769	croak ("tried to transfer to running coroutine");	1110	prev->flags &= ~CF_RUNNING;
		1111	next->flags \|= CF_RUNNING;
		1112
		1113	LOCK;
		1114
		1115	if (expect_false (next->flags & CF_NEW))
		1116	{
		1117	/* need to start coroutine */
		1118	next->flags &= ~CF_NEW;
		1119	/* first get rid of the old state */
		1120	save_perl (aTHX_ prev);
		1121	/* setup coroutine call */
		1122	coro_setup (aTHX_ next);
		1123	}
770	else	1124	else
771	{	1125	{
772	LOCK;	1126	/* coroutine already started */
773	SAVE (prev, -1); /* first get rid of the old state */	1127	save_perl (aTHX_ prev);
		1128	load_perl (aTHX_ next);
		1129	}
		1130
		1131	prev__cctx = prev->cctx;
		1132
		1133	/* possibly "free" the cctx */
		1134	if (expect_true (prev__cctx->idle_sp == STACKLEVEL && !(prev__cctx->flags & CC_TRACE)))
		1135	{
		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
		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);
		1148	}
		1149
		1150	++next->usecount;
		1151
		1152	if (expect_true (!next->cctx))
		1153	next->cctx = cctx_get (aTHX);
		1154
		1155	if (expect_false (prev__cctx != next->cctx))
		1156	{
		1157	prev__cctx->top_env = PL_top_env;
		1158	PL_top_env = next->cctx->top_env;
		1159	coro_transfer (&prev__cctx->cctx, &next->cctx->cctx);
		1160	}
		1161
		1162	free_coro_mortal (aTHX);
774	UNLOCK;	1163	UNLOCK;
775		1164
776	if (flags & TRANSFER_SAVE_CCTXT)	1165	if (expect_false (prev->throw \|\| next->throw))
		1166	{
		1167	struct coro *coro = SvSTATE (coro_current);
		1168
		1169	if (coro->throw)
777	{	1170	{
778	if (!prev->stack)	1171	SV *exception = coro->throw;
779	allocate_stack (prev, 0);	1172	coro->throw = 0;
780		1173	sv_setsv (ERRSV, exception);
781	if (prev->stack->sptr && flags & TRANSFER_LAZY_STACK)
782	{
783	PL_top_env = &next->start_env;
784
785	setup_coro (next);
786	next->cursp = stacklevel;
787
788	prev->stack->refcnt++;
789	prev->stack->usecnt++;
790	next->stack = prev->stack;
791	next->gencnt = prev->gencnt;
792	}
793	else
794	{
795	assert (!next->stack);
796	allocate_stack (next, 1);
797	coro_create (&(next->stack->cctx),
798	setup_coro, (void *)next,
799	next->stack->sptr, labs (next->stack->ssize));
800	coro_transfer (&(prev->stack->cctx), &(next->stack->cctx));
801	prev->cursp = stacklevel;
802	/* don't add any code here */
803	}
804	}
805	else
806	{
807	setup_coro (next);	1174	croak (0);
808	next->cursp = stacklevel;
809	}	1175	}
810	}	1176	}
811	}	1177	}
		1178	}
812		1179
813	LOCK;	1180	struct transfer_args
814	if (coro_mortal)	1181	{
815	{	1182	struct coro prev, next;
816	SvREFCNT_dec (coro_mortal);	1183	};
817	coro_mortal = 0;	1184
		1185	#define TRANSFER(ta) transfer (aTHX_ (ta).prev, (ta).next)
		1186	#define TRANSFER_CHECK(ta) transfer_check (aTHX_ (ta).prev, (ta).next)
		1187
		1188	/ high level stuff ******************************************************/
		1189
		1190	static int
		1191	coro_state_destroy (pTHX_ struct coro *coro)
		1192	{
		1193	if (coro->flags & CF_DESTROYED)
		1194	return 0;
		1195
		1196	coro->flags \|= CF_DESTROYED;
		1197
		1198	if (coro->flags & CF_READY)
818	}	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;
819	UNLOCK;	1204	UNLOCK;
820	}	1205	}
		1206	else
		1207	coro->flags \|= CF_READY; /* make sure it is NOT put into the readyqueue */
821		1208
822	#define SV_CORO(sv,func) \	1209	if (coro->mainstack && coro->mainstack != main_mainstack)
823	do { \	1210	{
824	if (SvROK (sv)) \	1211	struct coro temp;
825	sv = SvRV (sv); \
826	\
827	if (SvTYPE (sv) == SVt_PVHV) \
828	{ \
829	HE he = hv_fetch_ent ((HV )sv, ucoro_state_sv, 0, ucoro_state_hash); \
830	\
831	if (!he) \
832	croak ("%s() -- %s is a hashref but lacks the " UCORO_STATE " key", func, # sv); \
833	\
834	(sv) = SvRV (HeVAL(he)); \
835	} \
836	\
837	/* must also be changed inside Coro::Cont::yield */ \
838	if (!SvOBJECT (sv) \|\| SvSTASH (sv) != coro_state_stash) \
839	croak ("%s() -- %s is not (and contains not) a Coro::State object", func, # sv); \
840	\
841	} while(0)
842		1212
843	#define SvSTATE(sv) INT2PTR (struct coro *, SvIV (sv))	1213	if (coro->flags & CF_RUNNING)
		1214	croak ("FATAL: tried to destroy currently running coroutine");
844		1215
		1216	save_perl (aTHX_ &temp);
		1217	load_perl (aTHX_ coro);
		1218
		1219	coro_destroy (aTHX_ coro);
		1220
		1221	load_perl (aTHX_ &temp);
		1222
		1223	coro->slot = 0;
		1224	}
		1225
		1226	cctx_destroy (coro->cctx);
		1227	SvREFCNT_dec (coro->args);
		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;
		1234	}
		1235
845	static void	1236	static int
		1237	coro_state_free (pTHX_ SV sv, MAGIC mg)
		1238	{
		1239	struct coro coro = (struct coro )mg->mg_ptr;
		1240	mg->mg_ptr = 0;
		1241
		1242	coro->hv = 0;
		1243
		1244	if (--coro->refcnt < 0)
		1245	{
		1246	coro_state_destroy (aTHX_ coro);
		1247	Safefree (coro);
		1248	}
		1249
		1250	return 0;
		1251	}
		1252
		1253	static int
		1254	coro_state_dup (pTHX_ MAGIC mg, CLONE_PARAMS params)
		1255	{
		1256	struct coro coro = (struct coro )mg->mg_ptr;
		1257
		1258	++coro->refcnt;
		1259
		1260	return 0;
		1261	}
		1262
		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	};
		1273
		1274	static void
		1275	prepare_transfer (pTHX_ struct transfer_args ta, SV prev_sv, SV *next_sv)
		1276	{
		1277	ta->prev = SvSTATE (prev_sv);
		1278	ta->next = SvSTATE (next_sv);
		1279	TRANSFER_CHECK (*ta);
		1280	}
		1281
		1282	static void
846	api_transfer(pTHX_ SV prev, SV next, int flags)	1283	api_transfer (SV prev_sv, SV next_sv)
847	{	1284	{
848	SV_CORO (prev, "Coro::transfer");	1285	dTHX;
849	SV_CORO (next, "Coro::transfer");	1286	struct transfer_args ta;
850		1287
851	transfer (aTHX_ SvSTATE (prev), SvSTATE (next), flags);	1288	prepare_transfer (aTHX_ &ta, prev_sv, next_sv);
		1289	TRANSFER (ta);
852	}	1290	}
853		1291
854	/ Coro ******************************************************************/	1292	/ Coro ******************************************************************/
855		1293
856	#define PRIO_MAX 3
857	#define PRIO_HIGH 1
858	#define PRIO_NORMAL 0
859	#define PRIO_LOW -1
860	#define PRIO_IDLE -3
861	#define PRIO_MIN -4
862
863	/* for Coro.pm */
864	static GV coro_current, coro_idle;
865	static AV *coro_ready[PRIO_MAX-PRIO_MIN+1];
866	static int coro_nready;
867
868	static void	1294	static void
869	coro_enq (pTHX_ SV *sv)	1295	coro_enq (pTHX_ SV *coro_sv)
870	{	1296	{
871	SV **xprio;
872	int prio;
873
874	if (SvTYPE (sv) != SVt_PVHV)
875	croak ("Coro::ready tried to enqueue something that is not a coroutine");
876
877	xprio = hv_fetch ((HV *)sv, "prio", 4, 0);
878	prio = xprio ? SvIV (*xprio) : PRIO_NORMAL;
879
880	prio = prio > PRIO_MAX ? PRIO_MAX
881	: prio < PRIO_MIN ? PRIO_MIN
882	: prio;
883
884	av_push (coro_ready [prio - PRIO_MIN], sv);	1297	av_push (coro_ready [SvSTATE (coro_sv)->prio - PRIO_MIN], coro_sv);
885	coro_nready++;
886	}	1298	}
887		1299
888	static SV *	1300	static SV *
889	coro_deq (pTHX_ int min_prio)	1301	coro_deq (pTHX_ int min_prio)
890	{	1302	{
…		…
893	min_prio -= PRIO_MIN;	1305	min_prio -= PRIO_MIN;
894	if (min_prio < 0)	1306	if (min_prio < 0)
895	min_prio = 0;	1307	min_prio = 0;
896		1308
897	for (prio = PRIO_MAX - PRIO_MIN + 1; --prio >= min_prio; )	1309	for (prio = PRIO_MAX - PRIO_MIN + 1; --prio >= min_prio; )
898	if (av_len (coro_ready[prio]) >= 0)	1310	if (AvFILLp (coro_ready [prio]) >= 0)
899	{
900	coro_nready--;
901	return av_shift (coro_ready[prio]);	1311	return av_shift (coro_ready [prio]);
902	}
903		1312
904	return 0;	1313	return 0;
905	}	1314	}
906		1315
907	static void	1316	static int
908	api_ready (SV *coro)	1317	api_ready (SV *coro_sv)
909	{	1318	{
910	dTHX;	1319	dTHX;
		1320	struct coro *coro;
911		1321
912	if (SvROK (coro))	1322	if (SvROK (coro_sv))
913	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;
914		1331
915	LOCK;	1332	LOCK;
916	coro_enq (aTHX_ SvREFCNT_inc (coro));	1333	coro_enq (aTHX_ SvREFCNT_inc (coro_sv));
		1334	++coro_nready;
917	UNLOCK;	1335	UNLOCK;
		1336
		1337	return 1;
		1338	}
		1339
		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
		1348	prepare_schedule (pTHX_ struct transfer_args *ta)
		1349	{
		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);
		1398
		1399	LOCK;
		1400	free_coro_mortal (aTHX);
		1401	coro_mortal = prev_sv;
		1402	UNLOCK;
		1403	}
		1404
		1405	static void
		1406	prepare_cede (pTHX_ struct transfer_args *ta)
		1407	{
		1408	api_ready (coro_current);
		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;
918	}	1424	}
919		1425
920	static void	1426	static void
921	api_schedule (void)	1427	api_schedule (void)
922	{	1428	{
923	dTHX;	1429	dTHX;
		1430	struct transfer_args ta;
924		1431
925	SV prev, next;	1432	prepare_schedule (aTHX_ &ta);
926		1433	TRANSFER (ta);
927	LOCK;
928
929	prev = SvRV (GvSV (coro_current));
930	next = coro_deq (aTHX_ PRIO_MIN);
931
932	if (!next)
933	next = SvREFCNT_inc (SvRV (GvSV (coro_idle)));
934
935	/* free this only after the transfer */
936	coro_mortal = prev;
937	SV_CORO (prev, "Coro::schedule");
938
939	SvRV (GvSV (coro_current)) = next;
940
941	SV_CORO (next, "Coro::schedule");
942
943	UNLOCK;
944
945	transfer (aTHX_ SvSTATE (prev), SvSTATE (next),
946	TRANSFER_SAVE_ALL \| TRANSFER_LAZY_STACK);
947	}	1434	}
948		1435
949	static void	1436	static int
950	api_cede (void)	1437	api_cede (void)
951	{	1438	{
952	dTHX;	1439	dTHX;
		1440	struct transfer_args ta;
953		1441
954	LOCK;	1442	prepare_cede (aTHX_ &ta);
955	coro_enq (aTHX_ SvREFCNT_inc (SvRV (GvSV (coro_current))));
956	UNLOCK;
957		1443
958	api_schedule ();	1444	if (expect_true (ta.prev != ta.next))
		1445	{
		1446	TRANSFER (ta);
		1447	return 1;
		1448	}
		1449	else
		1450	return 0;
959	}	1451	}
960		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
961	MODULE = Coro::State PACKAGE = Coro::State	1494	MODULE = Coro::State PACKAGE = Coro::State PREFIX = api_
962		1495
963	PROTOTYPES: ENABLE	1496	PROTOTYPES: DISABLE
964		1497
965	BOOT:	1498	BOOT:
966	{ /* {} necessary for stoopid perl-5.6.x */	1499	{
967	#ifdef USE_ITHREADS	1500	#ifdef USE_ITHREADS
968	MUTEX_INIT (&coro_mutex);	1501	MUTEX_INIT (&coro_mutex);
969	#endif	1502	#endif
		1503	BOOT_PAGESIZE;
970		1504
971	ucoro_state_sv = newSVpv (UCORO_STATE, sizeof(UCORO_STATE) - 1);	1505	irsgv = gv_fetchpv ("/" , GV_ADD\|GV_NOTQUAL, SVt_PV);
972	PERL_HASH(ucoro_state_hash, UCORO_STATE, sizeof(UCORO_STATE) - 1);	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
973	coro_state_stash = gv_stashpv ("Coro::State", TRUE);	1515	coro_state_stash = gv_stashpv ("Coro::State", TRUE);
974		1516
975	newCONSTSUB (coro_state_stash, "SAVE_DEFAV", newSViv (TRANSFER_SAVE_DEFAV));	1517	newCONSTSUB (coro_state_stash, "CC_TRACE" , newSViv (CC_TRACE));
976	newCONSTSUB (coro_state_stash, "SAVE_DEFSV", newSViv (TRANSFER_SAVE_DEFSV));	1518	newCONSTSUB (coro_state_stash, "CC_TRACE_SUB" , newSViv (CC_TRACE_SUB));
977	newCONSTSUB (coro_state_stash, "SAVE_ERRSV", newSViv (TRANSFER_SAVE_ERRSV));	1519	newCONSTSUB (coro_state_stash, "CC_TRACE_LINE", newSViv (CC_TRACE_LINE));
978	newCONSTSUB (coro_state_stash, "SAVE_CCTXT", newSViv (TRANSFER_SAVE_CCTXT));	1520	newCONSTSUB (coro_state_stash, "CC_TRACE_ALL" , newSViv (CC_TRACE_ALL));
979		1521
980	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;
981		1527
982	coroapi.ver = CORO_API_VERSION;	1528	coroapi.ver = CORO_API_VERSION;
983	coroapi.transfer = api_transfer;	1529	coroapi.transfer = api_transfer;
984	}
985		1530
986	Coro::State	1531	assert (("PRIO_NORMAL must be 0", !PRIO_NORMAL));
987	_newprocess(args)	1532	}
988	SV * args	1533
989	PROTOTYPE: $	1534	SV *
		1535	new (char *klass, ...)
990	CODE:	1536	CODE:
991	Coro__State coro;	1537	{
		1538	struct coro *coro;
		1539	HV *hv;
		1540	int i;
992		1541
993	if (!SvROK (args) \|\| SvTYPE (SvRV (args)) != SVt_PVAV)
994	croak ("Coro::State::_newprocess expects an arrayref");
995
996	Newz (0, coro, 1, struct coro);	1542	Newz (0, coro, 1, struct coro);
		1543	coro->args = newAV ();
		1544	coro->flags = CF_NEW;
997		1545
998	coro->args = (AV *)SvREFCNT_inc (SvRV (args));	1546	if (coro_first) coro_first->prev = coro;
999	/coro->mainstack = 0; //actual work is done inside transfer /	1547	coro->next = coro_first;
1000	/coro->stack = 0;/	1548	coro_first = coro;
1001		1549
1002	/* same as JMPENV_BOOTSTRAP */	1550	coro->hv = hv = newHV ();
1003	/* we might be able to recycle start_env, but safe is safe */	1551	sv_magicext ((SV )hv, 0, PERL_MAGIC_ext, &coro_state_vtbl, (char )coro, 0)->mg_flags \|= MGf_DUP;
1004	/Zero(&coro->start_env, 1, JMPENV);/	1552	RETVAL = sv_bless (newRV_noinc ((SV *)hv), gv_stashpv (klass, 1));
1005	coro->start_env.je_ret = -1;
1006	coro->start_env.je_mustcatch = TRUE;
1007		1553
1008	RETVAL = coro;	1554	av_extend (coro->args, items - 1);
		1555	for (i = 1; i < items; i++)
		1556	av_push (coro->args, newSVsv (ST (i)));
		1557	}
1009	OUTPUT:	1558	OUTPUT:
1010	RETVAL	1559	RETVAL
1011		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
1012	void	1564	void
1013	transfer(prev, next, flags)	1565	_set_stacklevel (...)
1014	SV *prev	1566	ALIAS:
1015	SV *next	1567	Coro::State::transfer = 1
1016	int flags	1568	Coro::schedule = 2
1017	PROTOTYPE: @	1569	Coro::cede = 3
		1570	Coro::cede_notself = 4
1018	CODE:	1571	CODE:
1019	PUTBACK;	1572	{
1020	SV_CORO (next, "Coro::transfer");	1573	struct transfer_args ta;
1021	SV_CORO (prev, "Coro::transfer");	1574
1022	transfer (aTHX_ SvSTATE (prev), SvSTATE (next), flags);	1575	switch (ix)
1023	SPAGAIN;	1576	{
		1577	case 0:
		1578	ta.prev = (struct coro )INT2PTR (coro_cctx , SvIV (ST (0)));
		1579	ta.next = 0;
		1580	break;
		1581
		1582	case 1:
		1583	if (items != 2)
		1584	croak ("Coro::State::transfer (prev,next) expects two arguments, not %d", items);
		1585
		1586	prepare_transfer (aTHX_ &ta, ST (0), ST (1));
		1587	break;
		1588
		1589	case 2:
		1590	prepare_schedule (aTHX_ &ta);
		1591	break;
		1592
		1593	case 3:
		1594	prepare_cede (aTHX_ &ta);
		1595	break;
		1596
		1597	case 4:
		1598	if (!prepare_cede_notself (aTHX_ &ta))
		1599	XSRETURN_EMPTY;
		1600
		1601	break;
		1602	}
		1603
		1604	BARRIER;
		1605	TRANSFER (ta);
		1606
		1607	if (expect_false (GIMME_V != G_VOID && ta.next != ta.prev))
		1608	XSRETURN_YES;
		1609	}
		1610
		1611	bool
		1612	_destroy (SV *coro_sv)
		1613	CODE:
		1614	RETVAL = coro_state_destroy (aTHX_ SvSTATE (coro_sv));
		1615	OUTPUT:
		1616	RETVAL
1024		1617
1025	void	1618	void
1026	DESTROY(coro)
1027	Coro::State coro
1028	CODE:
1029
1030	if (coro->mainstack && coro->mainstack != main_mainstack)
1031	{
1032	struct coro temp;
1033
1034	PUTBACK;
1035	SAVE (aTHX_ (&temp), TRANSFER_SAVE_ALL);
1036	LOAD (aTHX_ coro);
1037	SPAGAIN;
1038
1039	destroy_stacks (aTHX);
1040
1041	LOAD ((&temp)); /* this will get rid of defsv etc.. */
1042	SPAGAIN;
1043
1044	coro->mainstack = 0;
1045	}
1046
1047	deallocate_stack (coro);
1048	SvREFCNT_dec (coro->args);
1049	Safefree (coro);
1050
1051	void
1052	_exit(code)	1619	_exit (code)
1053	int code	1620	int code
1054	PROTOTYPE: $	1621	PROTOTYPE: $
1055	CODE:	1622	CODE:
1056	_exit (code);	1623	_exit (code);
1057		1624
1058	MODULE = Coro::State PACKAGE = Coro::Cont	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
1059		1633
1060	# this is slightly dirty (should expose a c-level api)	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
1061		1647
1062	void	1648	void
1063	yield(...)	1649	list ()
1064	PROTOTYPE: @	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
1065	CODE:	1737	CODE:
1066	SV *yieldstack;	1738	switch (ix)
1067	SV *sv;	1739	{
1068	AV *defav = GvAV (PL_defgv);	1740	case 0: RETVAL = coro_rss (aTHX_ coro); break;
1069	struct coro prev, next;	1741	case 1: RETVAL = coro->usecount; break;
1070
1071	yieldstack = *hv_fetch (
1072	(HV *)SvRV (GvSV (coro_current)),
1073	"yieldstack", sizeof ("yieldstack") - 1,
1074	0	1742	}
1075	);	1743	OUTPUT:
		1744	RETVAL
1076		1745
1077	/* set up @_ -- ugly */
1078	av_clear (defav);
1079	av_fill (defav, items - 1);
1080	while (items--)
1081	av_store (defav, items, SvREFCNT_inc (ST(items)));
1082
1083	sv = av_pop ((AV *)SvRV (yieldstack));
1084	prev = INT2PTR (struct coro , SvIV ((SV)SvRV (av_fetch ((AV )SvRV (sv), 0, 0))));
1085	next = INT2PTR (struct coro , SvIV ((SV)SvRV (av_fetch ((AV )SvRV (sv), 1, 0))));
1086	SvREFCNT_dec (sv);
1087
1088	transfer (aTHX_ prev, next, 0);
1089		1746
1090	MODULE = Coro::State PACKAGE = Coro	1747	MODULE = Coro::State PACKAGE = Coro
1091		1748
1092	# this is slightly dirty (should expose a c-level api)
1093
1094	BOOT:	1749	BOOT:
1095	{	1750	{
1096	int i;	1751	int i;
		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
1097	HV *stash = gv_stashpv ("Coro", TRUE);	1760	coro_stash = gv_stashpv ("Coro", TRUE);
1098		1761
1099	newCONSTSUB (stash, "PRIO_MAX", newSViv (PRIO_MAX));	1762	newCONSTSUB (coro_stash, "PRIO_MAX", newSViv (PRIO_MAX));
1100	newCONSTSUB (stash, "PRIO_HIGH", newSViv (PRIO_HIGH));	1763	newCONSTSUB (coro_stash, "PRIO_HIGH", newSViv (PRIO_HIGH));
1101	newCONSTSUB (stash, "PRIO_NORMAL", newSViv (PRIO_NORMAL));	1764	newCONSTSUB (coro_stash, "PRIO_NORMAL", newSViv (PRIO_NORMAL));
1102	newCONSTSUB (stash, "PRIO_LOW", newSViv (PRIO_LOW));	1765	newCONSTSUB (coro_stash, "PRIO_LOW", newSViv (PRIO_LOW));
1103	newCONSTSUB (stash, "PRIO_IDLE", newSViv (PRIO_IDLE));	1766	newCONSTSUB (coro_stash, "PRIO_IDLE", newSViv (PRIO_IDLE));
1104	newCONSTSUB (stash, "PRIO_MIN", newSViv (PRIO_MIN));	1767	newCONSTSUB (coro_stash, "PRIO_MIN", newSViv (PRIO_MIN));
1105
1106	coro_current = gv_fetchpv ("Coro::current", TRUE, SVt_PV);
1107	coro_idle = gv_fetchpv ("Coro::idle" , TRUE, SVt_PV);
1108		1768
1109	for (i = PRIO_MAX - PRIO_MIN + 1; i--; )	1769	for (i = PRIO_MAX - PRIO_MIN + 1; i--; )
1110	coro_ready[i] = newAV ();	1770	coro_ready[i] = newAV ();
1111		1771
1112	{	1772	{
1113	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 */
1114		1775
1115	coroapi.schedule = api_schedule;	1776	coroapi.schedule = api_schedule;
1116	coroapi.cede = api_cede;	1777	coroapi.cede = api_cede;
		1778	coroapi.cede_notself = api_cede_notself;
1117	coroapi.ready = api_ready;	1779	coroapi.ready = api_ready;
		1780	coroapi.is_ready = api_is_ready;
1118	coroapi.nready = &coro_nready;	1781	coroapi.nready = &coro_nready;
1119	coroapi.current = coro_current;	1782	coroapi.current = coro_current;
1120		1783
1121	GCoroAPI = &coroapi;	1784	GCoroAPI = &coroapi;
1122	sv_setiv(sv, (IV)&coroapi);	1785	sv_setiv (sv, (IV)&coroapi);
1123	SvREADONLY_on(sv);	1786	SvREADONLY_on (sv);
1124	}	1787	}
1125	}	1788	}
1126		1789
1127	#if !PERL_MICRO
1128
1129	void	1790	void
1130	ready(self)	1791	_set_current (SV *current)
1131	SV * self
1132	PROTOTYPE: $	1792	PROTOTYPE: $
1133	CODE:	1793	CODE:
1134	api_ready (self);	1794	SvREFCNT_dec (SvRV (coro_current));
1135		1795	SvRV_set (coro_current, SvREFCNT_inc (SvRV (current)));
1136	#endif
1137		1796
1138	int	1797	int
		1798	prio (Coro::State coro, int newprio = 0)
		1799	ALIAS:
		1800	nice = 1
		1801	CODE:
		1802	{
		1803	RETVAL = coro->prio;
		1804
		1805	if (items > 1)
		1806	{
		1807	if (ix)
		1808	newprio = coro->prio - newprio;
		1809
		1810	if (newprio < PRIO_MIN) newprio = PRIO_MIN;
		1811	if (newprio > PRIO_MAX) newprio = PRIO_MAX;
		1812
		1813	coro->prio = newprio;
		1814	}
		1815	}
		1816	OUTPUT:
		1817	RETVAL
		1818
		1819	SV *
		1820	ready (SV *self)
		1821	PROTOTYPE: $
		1822	CODE:
		1823	RETVAL = boolSV (api_ready (self));
		1824	OUTPUT:
		1825	RETVAL
		1826
		1827	int
1139	nready(...)	1828	nready (...)
1140	PROTOTYPE:	1829	PROTOTYPE:
1141	CODE:	1830	CODE:
1142	RETVAL = coro_nready;	1831	RETVAL = coro_nready;
1143	OUTPUT:	1832	OUTPUT:
1144	RETVAL	1833	RETVAL
1145		1834
1146	void	1835	void
1147	schedule(...)	1836	throw (Coro::State self, SV *throw = &PL_sv_undef)
1148	PROTOTYPE:	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)
1149	CODE:	1845	CODE:
1150	api_schedule ();	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	}
1151		1877
1152	void	1878	void
1153	cede(...)	1879	_pool_2 (SV *cb)
1154	PROTOTYPE:
1155	CODE:	1880	CODE:
1156	api_cede ();	1881	{
		1882	struct coro *coro = SvSTATE (coro_current);
1157		1883
1158	# and these are hacks	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
		1906	MODULE = Coro::State PACKAGE = Coro::AIO
		1907
1159	SV *	1908	SV *
1160	_aio_get_state ()	1909	_get_state ()
1161	CODE:	1910	CODE:
1162	{	1911	{
1163	struct {	1912	struct io_state *data;
1164	int errorno;
1165	int laststype;
1166	int laststatval;
1167	Stat_t statcache;
1168	} data;
1169		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
1170	data.errorno = errno;	1919	data->errorno = errno;
1171	data.laststype = PL_laststype;	1920	data->laststype = PL_laststype;
1172	data.laststatval = PL_laststatval;	1921	data->laststatval = PL_laststatval;
1173	data.statcache = PL_statcache;	1922	data->statcache = PL_statcache;
1174
1175	RETVAL = newSVpvn ((char *)&data, sizeof data);
1176	}	1923	}
1177	OUTPUT:	1924	OUTPUT:
1178	RETVAL	1925	RETVAL
1179		1926
1180	void	1927	void
1181	_aio_set_state (char *data_)	1928	_set_state (char *data_)
1182	PROTOTYPE: $	1929	PROTOTYPE: $
1183	CODE:	1930	CODE:
1184	{	1931	{
1185	struct {	1932	struct io_state data = (void )data_;
1186	int errorno;
1187	int laststype;
1188	int laststatval;
1189	Stat_t statcache;
1190	} data = (void )data_;
1191		1933
1192	errno = data->errorno;	1934	errno = data->errorno;
1193	PL_laststype = data->laststype;	1935	PL_laststype = data->laststype;
1194	PL_laststatval = data->laststatval;	1936	PL_laststatval = data->laststatval;
1195	PL_statcache = data->statcache;	1937	PL_statcache = data->statcache;
1196	}	1938	}
		1939

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Comparing Coro/Coro/State.xs (file contents): Revision 1.76 by root, Thu Oct 26 08:45:56 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 1.76 by root, Thu Oct 26 08:45:56 2006 UTC vs.
Revision 1.202 by root, Mon Oct 8 02:50:23 2007 UTC