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

Comparing Coro/Coro/State.xs (file contents):
Revision 1.86 by root, Fri Nov 24 11:36:57 2006 UTC vs.
Revision 1.211 by root, Wed Oct 10 03:37:58 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	#include <inttypes.h> /* portable stdint.h */
		16
		17	#ifdef HAVE_MMAP
		18	# include <unistd.h>
		19	# include <sys/mman.h>
		20	# ifndef MAP_ANONYMOUS
		21	# ifdef MAP_ANON
		22	# define MAP_ANONYMOUS MAP_ANON
		23	# else
		24	# undef HAVE_MMAP
		25	# endif
		26	# endif
		27	# include <limits.h>
		28	# ifndef PAGESIZE
		29	# define PAGESIZE pagesize
		30	# define BOOT_PAGESIZE pagesize = sysconf (_SC_PAGESIZE)
		31	static long pagesize;
		32	# else
		33	# define BOOT_PAGESIZE (void)0
		34	# endif
		35	#else
		36	# define PAGESIZE 0
		37	# define BOOT_PAGESIZE (void)0
		38	#endif
		39
		40	#if CORO_USE_VALGRIND
		41	# include <valgrind/valgrind.h>
		42	# define REGISTER_STACK(cctx,start,end) (cctx)->valgrind_id = VALGRIND_STACK_REGISTER ((start), (end))
		43	#else
		44	# define REGISTER_STACK(cctx,start,end)
		45	#endif
		46
		47	/* the maximum number of idle cctx that will be pooled */
		48	#define MAX_IDLE_CCTX 8
		49
		50	#define PERL_VERSION_ATLEAST(a,b,c) \
		51	(PERL_REVISION > (a) \
		52	\|\| (PERL_REVISION == (a) \
		53	&& (PERL_VERSION > (b) \
		54	\|\| (PERL_VERSION == (b) && PERLSUBVERSION >= (c)))))
		55
		56	#if !PERL_VERSION_ATLEAST (5,6,0)
12	# ifndef PL_ppaddr	57	# ifndef PL_ppaddr
13	# define PL_ppaddr ppaddr	58	# define PL_ppaddr ppaddr
14	# endif	59	# endif
15	# ifndef call_sv	60	# ifndef call_sv
16	# define call_sv perl_call_sv	61	# define call_sv perl_call_sv
27	# ifndef IS_PADCONST	72	# ifndef IS_PADCONST
28	# define IS_PADCONST(v) 0	73	# define IS_PADCONST(v) 0
29	# endif	74	# endif
30	#endif	75	#endif
31		76
32	#include <errno.h>	77	/* 5.8.7 */
		78	#ifndef SvRV_set
		79	# define SvRV_set(s,v) SvRV(s) = (v)
		80	#endif
		81
		82	/* 5.8.8 */
		83	#ifndef GV_NOTQUAL
		84	# define GV_NOTQUAL 0
		85	#endif
		86	#ifndef newSV
		87	# define newSV(l) NEWSV(0,l)
		88	#endif
33		89
34	#if !__i386 && !__x86_64 && !__powerpc && !__m68k && !__alpha && !__mips && !__sparc64	90	#if !__i386 && !__x86_64 && !__powerpc && !__m68k && !__alpha && !__mips && !__sparc64
35	# undef STACKGUARD	91	# undef CORO_STACKGUARD
36	#endif
37
38	#ifndef STACKGUARD
39	# define STACKGUARD 0
40	#endif
41
42	#ifdef HAVE_MMAP
43	# include <unistd.h>
44	# include <sys/mman.h>
45	# ifndef MAP_ANONYMOUS
46	# ifdef MAP_ANON
47	# define MAP_ANONYMOUS MAP_ANON
48	# else
49	# undef HAVE_MMAP
50	# endif
51	# endif	92	#endif
52	# include <limits.h>	93
53	# ifndef PAGESIZE	94	#ifndef CORO_STACKGUARD
54	# define PAGESIZE pagesize	95	# define CORO_STACKGUARD 0
55	# define BOOT_PAGESIZE pagesize = sysconf (_SC_PAGESIZE)
56	static long pagesize;
57	# else
58	# define BOOT_PAGESIZE
59	# endif	96	#endif
60	#endif
61		97
62	#define SUB_INIT "Coro::State::initialize"	98	/* prefer perl internal functions over our own? */
63	#define UCORO_STATE "_coro_state"	99	#ifndef CORO_PREFER_PERL_FUNCTIONS
		100	# define CORO_PREFER_PERL_FUNCTIONS 0
		101	#endif
64		102
65	/* The next macro should declare a variable stacklevel that contains and approximation	103	/* The next macros try to return the current stack pointer, in an as
66	* to the current C stack pointer. Its property is that it changes with each call	104	* portable way as possible. */
67	* and should be unique. */	105	#define dSTACKLEVEL volatile char stacklevel
68	#define dSTACKLEVEL void *stacklevel = &stacklevel	106	#define STACKLEVEL ((void *)&stacklevel)
69		107
70	#define IN_DESTRUCT (PL_main_cv == Nullcv)	108	#define IN_DESTRUCT (PL_main_cv == Nullcv)
71		109
72	#define labs(l) ((l) >= 0 ? (l) : -(l))	110	#if __GNUC__ >= 3
		111	# define attribute(x) __attribute__(x)
		112	# define BARRIER __asm__ __volatile__ ("" : : : "memory")
		113	# define expect(expr,value) __builtin_expect ((expr),(value))
		114	#else
		115	# define attribute(x)
		116	# define BARRIER
		117	# define expect(expr,value) (expr)
		118	#endif
		119
		120	#define expect_false(expr) expect ((expr) != 0, 0)
		121	#define expect_true(expr) expect ((expr) != 0, 1)
		122
		123	#define NOINLINE attribute ((noinline))
73		124
74	#include "CoroAPI.h"	125	#include "CoroAPI.h"
75		126
76	#ifdef USE_ITHREADS	127	#ifdef USE_ITHREADS
77	static perl_mutex coro_mutex;	128	static perl_mutex coro_mutex;
…		…
80	#else	131	#else
81	# define LOCK (void)0	132	# define LOCK (void)0
82	# define UNLOCK (void)0	133	# define UNLOCK (void)0
83	#endif	134	#endif
84		135
		136	#define strpair(const) const, sizeof (const) - 1
		137
		138	/* helper storage struct for Coro::AIO */
		139	struct io_state
		140	{
		141	int errorno;
		142	I32 laststype;
		143	int laststatval;
		144	Stat_t statcache;
		145	};
		146
		147	static size_t coro_stacksize = CORO_STACKSIZE;
85	static struct CoroAPI coroapi;	148	static struct CoroAPI coroapi;
86	static AV main_mainstack; / used to differentiate between $main and others */	149	static AV main_mainstack; / used to differentiate between $main and others */
		150	static JMPENV *main_top_env;
87	static HV *coro_state_stash;	151	static HV coro_state_stash, coro_stash;
88	static SV *ucoro_state_sv;
89	static U32 ucoro_state_hash;
90	static SV coro_mortal; / will be freed after next transfer */	152	static SV coro_mortal; / will be freed after next transfer */
91		153
92	/* this is actually not only the c stack but also c registers etc... */	154	static GV irsgv; / $/ */
		155	static GV stdoutgv; / STDOUT /
		156
		157	static HV hv_sig; / %SIG */
		158	static SV *sv_diehook;
		159	static SV *sv_warnhook;
		160
		161	/* async_pool helper stuff */
		162	static SV *sv_pool_rss;
		163	static SV *sv_pool_size;
		164	static AV *av_async_pool;
		165
		166	static struct coro_cctx *cctx_first;
		167	static int cctx_count, cctx_idle;
		168
		169	enum {
		170	CC_MAPPED = 0x01,
		171	CC_NOREUSE = 0x02, /* throw this away after tracing */
		172	CC_TRACE = 0x04,
		173	CC_TRACE_SUB = 0x08, /* trace sub calls */
		174	CC_TRACE_LINE = 0x10, /* trace each statement */
		175	CC_TRACE_ALL = CC_TRACE_SUB \| CC_TRACE_LINE,
		176	};
		177
		178	/* this is a structure representing a c-level coroutine */
		179	typedef struct coro_cctx {
		180	struct coro_cctx *next;
		181
		182	/* the stack */
		183	void *sptr;
		184	size_t ssize;
		185
		186	/* cpu state */
		187	void idle_sp; / sp of top-level transfer/schedule/cede call */
		188	JMPENV idle_te; / same as idle_sp, but for top_env, TODO: remove once stable */
		189	JMPENV *top_env;
		190	coro_context cctx;
		191
		192	#if CORO_USE_VALGRIND
		193	int valgrind_id;
		194	#endif
		195	unsigned char flags;
		196	} coro_cctx;
		197
		198	enum {
		199	CF_RUNNING = 0x0001, /* coroutine is running */
		200	CF_READY = 0x0002, /* coroutine is ready */
		201	CF_NEW = 0x0004, /* has never been switched to */
		202	CF_DESTROYED = 0x0008, /* coroutine data has been freed */
		203	};
		204
		205	/* the structure where most of the perl state is stored, overlaid on the cxstack */
93	typedef struct {	206	typedef struct {
94	int refcnt; /* pointer reference counter */	207	SV *defsv;
95	int usecnt; /* shared by how many coroutines */	208	AV *defav;
96	int gencnt; /* generation counter */	209	SV *errsv;
		210	SV *irsgv;
		211	#define VAR(name,type) type name;
		212	# include "state.h"
		213	#undef VAR
		214	} perl_slots;
97		215
98	coro_context cctx;	216	#define SLOT_COUNT ((sizeof (perl_slots) + sizeof (PERL_CONTEXT) - 1) / sizeof (PERL_CONTEXT))
99		217
100	void *sptr;	218	/* this is a structure representing a perl-level coroutine */
101	long ssize; /* positive == mmap, otherwise malloc */
102	} coro_stack;
103
104	struct coro {	219	struct coro {
105	/* the optional C context */	220	/* the c coroutine allocated to this perl coroutine, if any */
106	coro_stack *stack;	221	coro_cctx *cctx;
107	void *cursp;
108	int gencnt;
109		222
110	/* optionally saved, might be zero */	223	/* process data */
111	AV *defav;
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;	224	AV *mainstack;
123	SV **stack_sp;	225	perl_slots slot; / basically the saved 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	JMPENV *top_env;
149		226
150	/* data associated with this coroutine (initial args) */	227	AV args; / data associated with this coroutine (initial args) */
151	AV *args;	228	int refcnt; /* coroutines are refcounted, yes */
		229	int flags; /* CF_ flags */
		230	HV hv; / the perl hash associated with this coro, if any */
		231
		232	/* statistics */
		233	int usecount; /* number of transfers to this coro */
		234
		235	/* coro process data */
		236	int prio;
		237	SV throw; / exception to be thrown */
		238
		239	/* async_pool */
		240	SV *saved_deffh;
		241
		242	/* linked list */
		243	struct coro next, prev;
152	};	244	};
153		245
154	typedef struct coro *Coro__State;	246	typedef struct coro *Coro__State;
155	typedef struct coro *Coro__State_or_hashref;	247	typedef struct coro *Coro__State_or_hashref;
156		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
		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
157	static AV *	296	static AV *
158	coro_clone_padlist (pTHX_ CV *cv)	297	coro_clone_padlist (pTHX_ CV *cv)
159	{	298	{
160	AV *padlist = CvPADLIST (cv);	299	AV *padlist = CvPADLIST (cv);
161	AV newpadlist, newpad;	300	AV newpadlist, newpad;
162		301
163	newpadlist = newAV ();	302	newpadlist = newAV ();
164	AvREAL_off (newpadlist);	303	AvREAL_off (newpadlist);
165	#if PERL_VERSION < 9	304	#if PERL_VERSION_ATLEAST (5,9,0)
		305	Perl_pad_push (aTHX_ padlist, AvFILLp (padlist) + 1);
		306	#else
166	Perl_pad_push (aTHX_ padlist, AvFILLp (padlist) + 1, 1);	307	Perl_pad_push (aTHX_ padlist, AvFILLp (padlist) + 1, 1);
167	#else
168	Perl_pad_push (aTHX_ padlist, AvFILLp (padlist) + 1);
169	#endif	308	#endif
170	newpad = (AV *)AvARRAY (padlist)[AvFILLp (padlist)];	309	newpad = (AV *)AvARRAY (padlist)[AvFILLp (padlist)];
171	--AvFILLp (padlist);	310	--AvFILLp (padlist);
172		311
173	av_store (newpadlist, 0, SvREFCNT_inc (*av_fetch (padlist, 0, FALSE)));	312	av_store (newpadlist, 0, SvREFCNT_inc (*av_fetch (padlist, 0, FALSE)));
…		…
217		356
218	#define PERL_MAGIC_coro PERL_MAGIC_ext	357	#define PERL_MAGIC_coro PERL_MAGIC_ext
219		358
220	static MGVTBL vtbl_coro = {0, 0, 0, 0, coro_cv_free};	359	static MGVTBL vtbl_coro = {0, 0, 0, 0, coro_cv_free};
221		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
222	/* the next two functions merely cache the padlists */	394	/* the next two functions merely cache the padlists */
223	static void	395	static void
224	get_padlist (pTHX_ CV *cv)	396	get_padlist (pTHX_ CV *cv)
225	{	397	{
226	MAGIC mg = mg_find ((SV )cv, PERL_MAGIC_coro);	398	MAGIC *mg = CORO_MAGIC (cv);
		399	AV *av;
227		400
228	if (mg && AvFILLp ((AV *)mg->mg_obj) >= 0)	401	if (expect_true (mg && AvFILLp ((av = (AV *)mg->mg_obj)) >= 0))
229	CvPADLIST (cv) = (AV )av_pop ((AV )mg->mg_obj);	402	CvPADLIST (cv) = (AV *)AvARRAY (av)[AvFILLp (av)--];
230	else	403	else
231	{	404	{
232	#if 0	405	#if CORO_PREFER_PERL_FUNCTIONS
233	/* this should work - but it doesn't :( */	406	/* this is probably cleaner, but also slower? */
234	CV *cp = Perl_cv_clone (aTHX_ cv);	407	CV *cp = Perl_cv_clone (cv);
235	CvPADLIST (cv) = CvPADLIST (cp);	408	CvPADLIST (cv) = CvPADLIST (cp);
236	CvPADLIST (cp) = 0;	409	CvPADLIST (cp) = 0;
237	SvREFCNT_dec (cp);	410	SvREFCNT_dec (cp);
238	#else	411	#else
239	CvPADLIST (cv) = coro_clone_padlist (aTHX_ cv);	412	CvPADLIST (cv) = coro_clone_padlist (aTHX_ cv);
…		…
242	}	415	}
243		416
244	static void	417	static void
245	put_padlist (pTHX_ CV *cv)	418	put_padlist (pTHX_ CV *cv)
246	{	419	{
247	MAGIC mg = mg_find ((SV )cv, PERL_MAGIC_coro);	420	MAGIC *mg = CORO_MAGIC (cv);
		421	AV *av;
248		422
249	if (!mg)	423	if (expect_false (!mg))
250	{	424	{
251	sv_magic ((SV *)cv, 0, PERL_MAGIC_coro, 0, 0);	425	sv_magic ((SV *)cv, 0, PERL_MAGIC_coro, 0, 0);
252	mg = mg_find ((SV *)cv, PERL_MAGIC_coro);	426	mg = mg_find ((SV *)cv, PERL_MAGIC_coro);
253	mg->mg_virtual = &vtbl_coro;	427	mg->mg_virtual = &vtbl_coro;
254	mg->mg_obj = (SV *)newAV ();	428	mg->mg_obj = (SV *)newAV ();
255	}	429	}
256		430
257	av_push ((AV )mg->mg_obj, (SV )CvPADLIST (cv));	431	av = (AV *)mg->mg_obj;
258	}
259		432
260	#define SB do {	433	if (expect_false (AvFILLp (av) >= AvMAX (av)))
261	#define SE } while (0)	434	av_extend (av, AvMAX (av) + 1);
262		435
263	#define LOAD(state) load_state(aTHX_ (state));	436	AvARRAY (av)[++AvFILLp (av)] = (SV *)CvPADLIST (cv);
264	#define SAVE(state,flags) save_state(aTHX_ (state),(flags));	437	}
265		438
266	#define REPLACE_SV(sv,val) SB SvREFCNT_dec(sv); (sv) = (val); (val) = 0; SE	439	/ load & save, init *****************************************************/
267		440
268	static void	441	static void
269	load_state(pTHX_ Coro__State c)	442	load_perl (pTHX_ Coro__State c)
270	{	443	{
271	PL_dowarn = c->dowarn;	444	perl_slots *slot = c->slot;
272	PL_in_eval = c->in_eval;	445	c->slot = 0;
273		446
274	PL_curstackinfo = c->curstackinfo;
275	PL_curstack = c->curstack;
276	PL_mainstack = c->mainstack;	447	PL_mainstack = c->mainstack;
277	PL_stack_sp = c->stack_sp;
278	PL_op = c->op;
279	PL_curpad = c->curpad;
280	PL_comppad = c->comppad;
281	PL_compcv = c->compcv;
282	PL_stack_base = c->stack_base;
283	PL_stack_max = c->stack_max;
284	PL_tmps_stack = c->tmps_stack;
285	PL_tmps_floor = c->tmps_floor;
286	PL_tmps_ix = c->tmps_ix;
287	PL_tmps_max = c->tmps_max;
288	PL_markstack = c->markstack;
289	PL_markstack_ptr = c->markstack_ptr;
290	PL_markstack_max = c->markstack_max;
291	PL_scopestack = c->scopestack;
292	PL_scopestack_ix = c->scopestack_ix;
293	PL_scopestack_max = c->scopestack_max;
294	PL_savestack = c->savestack;
295	PL_savestack_ix = c->savestack_ix;
296	PL_savestack_max = c->savestack_max;
297	#if PERL_VERSION < 9
298	PL_retstack = c->retstack;
299	PL_retstack_ix = c->retstack_ix;
300	PL_retstack_max = c->retstack_max;
301	#endif
302	PL_curpm = c->curpm;
303	PL_curcop = c->curcop;
304	PL_top_env = c->top_env;
305		448
306	if (c->defav) REPLACE_SV (GvAV (PL_defgv), c->defav);	449	GvSV (PL_defgv) = slot->defsv;
307	if (c->defsv) REPLACE_SV (DEFSV , c->defsv);	450	GvAV (PL_defgv) = slot->defav;
308	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);/
309		460
310	{	461	{
311	dSP;	462	dSP;
		463
312	CV *cv;	464	CV *cv;
313		465
314	/* now do the ugly restore mess */	466	/* now do the ugly restore mess */
315	while ((cv = (CV *)POPs))	467	while (expect_true (cv = (CV *)POPs))
316	{	468	{
317	AV padlist = (AV )POPs;
318
319	if (padlist)
320	{
321	put_padlist (aTHX_ cv); /* mark this padlist as available */	469	put_padlist (aTHX_ cv); /* mark this padlist as available */
322	CvPADLIST(cv) = padlist;	470	CvDEPTH (cv) = PTR2IV (POPs);
323	}	471	CvPADLIST (cv) = (AV *)POPs;
324
325	++CvDEPTH(cv);
326	}	472	}
327		473
328	PUTBACK;	474	PUTBACK;
329	}	475	}
330	}	476	}
331		477
332	static void	478	static void
333	save_state(pTHX_ Coro__State c, int flags)	479	save_perl (pTHX_ Coro__State c)
334	{	480	{
335	{	481	{
336	dSP;	482	dSP;
337	I32 cxix = cxstack_ix;	483	I32 cxix = cxstack_ix;
338	PERL_CONTEXT *ccstk = cxstack;	484	PERL_CONTEXT *ccstk = cxstack;
…		…
341	/*	487	/*
342	* 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
343	* (and reinitialize) all cv's in the whole callchain :(	489	* (and reinitialize) all cv's in the whole callchain :(
344	*/	490	*/
345		491
346	PUSHs (Nullsv);	492	XPUSHs (Nullsv);
347	/* this loop was inspired by pp_caller */	493	/* this loop was inspired by pp_caller */
348	for (;;)	494	for (;;)
349	{	495	{
350	while (cxix >= 0)	496	while (expect_true (cxix >= 0))
351	{	497	{
352	PERL_CONTEXT *cx = &ccstk[cxix--];	498	PERL_CONTEXT *cx = &ccstk[cxix--];
353		499
354	if (CxTYPE(cx) == CXt_SUB)	500	if (expect_true (CxTYPE (cx) == CXt_SUB \|\| CxTYPE (cx) == CXt_FORMAT))
355	{	501	{
356	CV *cv = cx->blk_sub.cv;	502	CV *cv = cx->blk_sub.cv;
		503
357	if (CvDEPTH(cv))	504	if (expect_true (CvDEPTH (cv)))
358	{	505	{
359	EXTEND (SP, CvDEPTH(cv)*2);	506	EXTEND (SP, 3);
360
361	while (--CvDEPTH(cv))
362	{
363	/* this tells the restore code to increment CvDEPTH */
364	PUSHs (Nullsv);
365	PUSHs ((SV *)cv);
366	}
367
368	PUSHs ((SV *)CvPADLIST(cv));	507	PUSHs ((SV *)CvPADLIST (cv));
		508	PUSHs (INT2PTR (SV *, CvDEPTH (cv)));
369	PUSHs ((SV *)cv);	509	PUSHs ((SV *)cv);
370		510
		511	CvDEPTH (cv) = 0;
371	get_padlist (aTHX_ cv);	512	get_padlist (aTHX_ cv);
372	}	513	}
373	}	514	}
374	#ifdef CXt_FORMAT
375	else if (CxTYPE(cx) == CXt_FORMAT)
376	{
377	/* I never used formats, so how should I know how these are implemented? */
378	/* my bold guess is as a simple, plain sub... */
379	croak ("CXt_FORMAT not yet handled. Don't switch coroutines from within formats");
380	}
381	#endif
382	}	515	}
383		516
384	if (top_si->si_type == PERLSI_MAIN)	517	if (expect_true (top_si->si_type == PERLSI_MAIN))
385	break;	518	break;
386		519
387	top_si = top_si->si_prev;	520	top_si = top_si->si_prev;
388	ccstk = top_si->si_cxstack;	521	ccstk = top_si->si_cxstack;
389	cxix = top_si->si_cxix;	522	cxix = top_si->si_cxix;
390	}	523	}
391		524
392	PUTBACK;	525	PUTBACK;
393	}	526	}
394		527
395	c->defav = flags & TRANSFER_SAVE_DEFAV ? (AV *)SvREFCNT_inc (GvAV (PL_defgv)) : 0;	528	/* allocate some space on the context stack for our purposes */
396	c->defsv = flags & TRANSFER_SAVE_DEFSV ? SvREFCNT_inc (DEFSV) : 0;	529	/* we manually unroll here, as usually 2 slots is enough */
397	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 */
398		539
399	c->dowarn = PL_dowarn;
400	c->in_eval = PL_in_eval;
401
402	c->curstackinfo = PL_curstackinfo;
403	c->curstack = PL_curstack;
404	c->mainstack = PL_mainstack;	540	c->mainstack = PL_mainstack;
405	c->stack_sp = PL_stack_sp;	541
406	c->op = PL_op;	542	{
407	c->curpad = PL_curpad;	543	perl_slots slot = c->slot = (perl_slots )(cxstack + cxstack_ix + 1);
408	c->comppad = PL_comppad;	544
409	c->compcv = PL_compcv;	545	slot->defav = GvAV (PL_defgv);
410	c->stack_base = PL_stack_base;	546	slot->defsv = DEFSV;
411	c->stack_max = PL_stack_max;	547	slot->errsv = ERRSV;
412	c->tmps_stack = PL_tmps_stack;	548	slot->irsgv = GvSV (irsgv);
413	c->tmps_floor = PL_tmps_floor;	549
414	c->tmps_ix = PL_tmps_ix;	550	#define VAR(name,type) slot->name = PL_ ## name;
415	c->tmps_max = PL_tmps_max;	551	# include "state.h"
416	c->markstack = PL_markstack;	552	#undef VAR
417	c->markstack_ptr = PL_markstack_ptr;	553	}
418	c->markstack_max = PL_markstack_max;
419	c->scopestack = PL_scopestack;
420	c->scopestack_ix = PL_scopestack_ix;
421	c->scopestack_max = PL_scopestack_max;
422	c->savestack = PL_savestack;
423	c->savestack_ix = PL_savestack_ix;
424	c->savestack_max = PL_savestack_max;
425	#if PERL_VERSION < 9
426	c->retstack = PL_retstack;
427	c->retstack_ix = PL_retstack_ix;
428	c->retstack_max = PL_retstack_max;
429	#endif
430	c->curpm = PL_curpm;
431	c->curcop = PL_curcop;
432	c->top_env = PL_top_env;
433	}	554	}
434		555
435	/*	556	/*
436	* allocate various perl stacks. This is an exact copy	557	* allocate various perl stacks. This is an exact copy
437	* of perl.c:init_stacks, except that it uses less memory	558	* of perl.c:init_stacks, except that it uses less memory
438	* on the (sometimes correct) assumption that coroutines do	559	* on the (sometimes correct) assumption that coroutines do
439	* not usually need a lot of stackspace.	560	* not usually need a lot of stackspace.
440	*/	561	*/
		562	#if CORO_PREFER_PERL_FUNCTIONS
		563	# define coro_init_stacks init_stacks
		564	#else
441	static void	565	static void
442	coro_init_stacks (pTHX)	566	coro_init_stacks (pTHX)
443	{	567	{
444	LOCK;	568	PL_curstackinfo = new_stackinfo(32, 8);
445
446	PL_curstackinfo = new_stackinfo(96, 1024/sizeof(PERL_CONTEXT) - 1);
447	PL_curstackinfo->si_type = PERLSI_MAIN;	569	PL_curstackinfo->si_type = PERLSI_MAIN;
448	PL_curstack = PL_curstackinfo->si_stack;	570	PL_curstack = PL_curstackinfo->si_stack;
449	PL_mainstack = PL_curstack; /* remember in case we switch stacks */	571	PL_mainstack = PL_curstack; /* remember in case we switch stacks */
450		572
451	PL_stack_base = AvARRAY(PL_curstack);	573	PL_stack_base = AvARRAY(PL_curstack);
452	PL_stack_sp = PL_stack_base;	574	PL_stack_sp = PL_stack_base;
453	PL_stack_max = PL_stack_base + AvMAX(PL_curstack);	575	PL_stack_max = PL_stack_base + AvMAX(PL_curstack);
454		576
455	New(50,PL_tmps_stack,96,SV*);	577	New(50,PL_tmps_stack,32,SV*);
456	PL_tmps_floor = -1;	578	PL_tmps_floor = -1;
457	PL_tmps_ix = -1;	579	PL_tmps_ix = -1;
458	PL_tmps_max = 96;	580	PL_tmps_max = 32;
459		581
460	New(54,PL_markstack,16,I32);	582	New(54,PL_markstack,16,I32);
461	PL_markstack_ptr = PL_markstack;	583	PL_markstack_ptr = PL_markstack;
462	PL_markstack_max = PL_markstack + 16;	584	PL_markstack_max = PL_markstack + 16;
463		585
464	#ifdef SET_MARK_OFFSET	586	#ifdef SET_MARK_OFFSET
465	SET_MARK_OFFSET;	587	SET_MARK_OFFSET;
466	#endif	588	#endif
467		589
468	New(54,PL_scopestack,16,I32);	590	New(54,PL_scopestack,8,I32);
469	PL_scopestack_ix = 0;	591	PL_scopestack_ix = 0;
470	PL_scopestack_max = 16;	592	PL_scopestack_max = 8;
471		593
472	New(54,PL_savestack,96,ANY);	594	New(54,PL_savestack,24,ANY);
473	PL_savestack_ix = 0;	595	PL_savestack_ix = 0;
474	PL_savestack_max = 96;	596	PL_savestack_max = 24;
475		597
476	#if PERL_VERSION < 9	598	#if !PERL_VERSION_ATLEAST (5,9,0)
477	New(54,PL_retstack,8,OP*);	599	New(54,PL_retstack,4,OP*);
478	PL_retstack_ix = 0;	600	PL_retstack_ix = 0;
479	PL_retstack_max = 8;	601	PL_retstack_max = 4;
480	#endif	602	#endif
481
482	UNLOCK;
483	}	603	}
		604	#endif
484		605
485	/*	606	/*
486	* destroy the stacks, the callchain etc...	607	* destroy the stacks, the callchain etc...
487	*/	608	*/
488	static void	609	static void
489	destroy_stacks(pTHX)	610	coro_destroy_stacks (pTHX)
490	{	611	{
491	if (!IN_DESTRUCT)
492	{
493	/* is this ugly, I ask? */
494	LEAVE_SCOPE (0);
495
496	/* sure it is, but more important: is it correct?? :/ */
497	FREETMPS;
498
499	/POPSTACK_TO (PL_mainstack);//D//use/
500	}
501
502	while (PL_curstackinfo->si_next)	612	while (PL_curstackinfo->si_next)
503	PL_curstackinfo = PL_curstackinfo->si_next;	613	PL_curstackinfo = PL_curstackinfo->si_next;
504		614
505	while (PL_curstackinfo)	615	while (PL_curstackinfo)
506	{	616	{
507	PERL_SI *p = PL_curstackinfo->si_prev;	617	PERL_SI *p = PL_curstackinfo->si_prev;
508		618
509	{ /D//remove/
510	dSP;
511	SWITCHSTACK (PL_curstack, PL_curstackinfo->si_stack);
512	PUTBACK; /* possibly superfluous */
513	}
514
515	if (!IN_DESTRUCT)	619	if (!IN_DESTRUCT)
516	{
517	dounwind (-1);/D//remove/
518	SvREFCNT_dec (PL_curstackinfo->si_stack);	620	SvREFCNT_dec (PL_curstackinfo->si_stack);
519	}
520		621
521	Safefree (PL_curstackinfo->si_cxstack);	622	Safefree (PL_curstackinfo->si_cxstack);
522	Safefree (PL_curstackinfo);	623	Safefree (PL_curstackinfo);
523	PL_curstackinfo = p;	624	PL_curstackinfo = p;
524	}	625	}
525		626
526	Safefree (PL_tmps_stack);	627	Safefree (PL_tmps_stack);
527	Safefree (PL_markstack);	628	Safefree (PL_markstack);
528	Safefree (PL_scopestack);	629	Safefree (PL_scopestack);
529	Safefree (PL_savestack);	630	Safefree (PL_savestack);
530	#if PERL_VERSION < 9	631	#if !PERL_VERSION_ATLEAST (5,9,0)
531	Safefree (PL_retstack);	632	Safefree (PL_retstack);
532	#endif	633	#endif
533	}	634	}
534		635
535	static void	636	static size_t
536	allocate_stack (Coro__State ctx, int alloc)	637	coro_rss (pTHX_ struct coro *coro)
537	{	638	{
538	coro_stack *stack;	639	size_t rss = sizeof (*coro);
539		640
540	New (0, stack, 1, coro_stack);	641	if (coro->mainstack)
541
542	stack->refcnt = 1;
543	stack->usecnt = 1;
544	stack->gencnt = ctx->gencnt = 0;
545
546	if (alloc)
547	{	642	{
548	#if HAVE_MMAP	643	perl_slots tmp_slot;
549	stack->ssize = ((STACKSIZE * sizeof (long) + PAGESIZE - 1) / PAGESIZE + STACKGUARD) * PAGESIZE; /* mmap should do allocate-on-write for us */	644	perl_slots *slot;
550	stack->sptr = mmap (0, stack->ssize, PROT_EXEC\|PROT_READ\|PROT_WRITE, MAP_PRIVATE\|MAP_ANONYMOUS, 0, 0);	645
551	if (stack->sptr != (void *)-1)	646	if (coro->flags & CF_RUNNING)
552	{	647	{
553	# if STACKGUARD	648	slot = &tmp_slot;
554	mprotect (stack->sptr, STACKGUARD * PAGESIZE, PROT_NONE);	649
555	# endif	650	#define VAR(name,type) slot->name = PL_ ## name;
		651	# include "state.h"
		652	#undef VAR
556	}	653	}
557	else	654	else
558	#endif	655	slot = coro->slot;
559	{
560	stack->ssize = - (STACKSIZE * (long)sizeof (long));
561	New (0, stack->sptr, STACKSIZE, long);
562	}
563	}
564	else
565	stack->sptr = 0;
566		656
567	ctx->stack = stack;	657	rss += sizeof (slot->curstackinfo);
568	}	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);
569		664
570	static void	665	#if !PERL_VERSION_ATLEAST (5,9,0)
571	deallocate_stack (Coro__State ctx)	666	rss += slot->retstack_max * sizeof (OP *);
572	{	667	#endif
573	coro_stack *stack = ctx->stack;
574
575	ctx->stack = 0;
576
577	if (stack)
578	{	668	}
579	if (!--stack->refcnt)
580	{
581	#ifdef HAVE_MMAP
582	if (stack->ssize > 0 && stack->sptr)
583	munmap (stack->sptr, stack->ssize);
584	else
585	#endif
586	Safefree (stack->sptr);
587		669
588	Safefree (stack);	670	return rss;
589	}
590	else if (ctx->gencnt == stack->gencnt)
591	--stack->usecnt;
592	}
593	}	671	}
594		672
		673	/ coroutine stack handling **********************************************/
		674
595	static void	675	static void
596	setup_coro (void *arg)	676	coro_setup (pTHX_ struct coro *coro)
597	{	677	{
598	/*	678	/*
599	* emulate part of the perl startup here.	679	* emulate part of the perl startup here.
600	*/	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	/* this newly created coroutine might be run on an existing cctx which most
		719	* likely was suspended in set_stacklevel, called from entersub.
		720	* set_stacklevl doesn't do anything on return, but entersub does LEAVE,
		721	* so we ENTER here for symmetry
		722	*/
		723	ENTER;
		724	}
		725
		726	static void
		727	coro_destroy (pTHX_ struct coro *coro)
		728	{
		729	if (!IN_DESTRUCT)
		730	{
		731	/* restore all saved variables and stuff */
		732	LEAVE_SCOPE (0);
		733	assert (PL_tmps_floor == -1);
		734
		735	/* free all temporaries */
		736	FREETMPS;
		737	assert (PL_tmps_ix == -1);
		738
		739	/* unwind all extra stacks */
		740	POPSTACK_TO (PL_mainstack);
		741
		742	/* unwind main stack */
		743	dounwind (-1);
		744	}
		745
		746	SvREFCNT_dec (GvSV (PL_defgv));
		747	SvREFCNT_dec (GvAV (PL_defgv));
		748	SvREFCNT_dec (GvSV (PL_errgv));
		749	SvREFCNT_dec (PL_defoutgv);
		750	SvREFCNT_dec (PL_rs);
		751	SvREFCNT_dec (GvSV (irsgv));
		752
		753	SvREFCNT_dec (PL_diehook);
		754	SvREFCNT_dec (PL_warnhook);
		755
		756	SvREFCNT_dec (coro->saved_deffh);
		757	SvREFCNT_dec (coro->throw);
		758
		759	coro_destroy_stacks (aTHX);
		760	}
		761
		762	static void
		763	free_coro_mortal (pTHX)
		764	{
		765	if (expect_true (coro_mortal))
		766	{
		767	SvREFCNT_dec (coro_mortal);
		768	coro_mortal = 0;
		769	}
		770	}
		771
		772	static int
		773	runops_trace (pTHX)
		774	{
		775	COP *oldcop = 0;
		776	int oldcxix = -2;
		777	struct coro coro = SvSTATE (coro_current); / trace cctx is tied to specific coro */
		778	coro_cctx *cctx = coro->cctx;
		779
		780	while ((PL_op = CALL_FPTR (PL_op->op_ppaddr) (aTHX)))
		781	{
		782	PERL_ASYNC_CHECK ();
		783
		784	if (cctx->flags & CC_TRACE_ALL)
		785	{
		786	if (PL_op->op_type == OP_LEAVESUB && cctx->flags & CC_TRACE_SUB)
		787	{
		788	PERL_CONTEXT *cx = &cxstack[cxstack_ix];
		789	SV bot, top;
		790	AV av = newAV (); / return values */
		791	SV **cb;
		792	dSP;
		793
		794	GV *gv = CvGV (cx->blk_sub.cv);
		795	SV *fullname = sv_2mortal (newSV (0));
		796	if (isGV (gv))
		797	gv_efullname3 (fullname, gv, 0);
		798
		799	bot = PL_stack_base + cx->blk_oldsp + 1;
		800	top = cx->blk_gimme == G_ARRAY ? SP + 1
		801	: cx->blk_gimme == G_SCALAR ? bot + 1
		802	: bot;
		803
		804	av_extend (av, top - bot);
		805	while (bot < top)
		806	av_push (av, SvREFCNT_inc (*bot++));
		807
		808	PL_runops = RUNOPS_DEFAULT;
		809	ENTER;
		810	SAVETMPS;
		811	EXTEND (SP, 3);
		812	PUSHMARK (SP);
		813	PUSHs (&PL_sv_no);
		814	PUSHs (fullname);
		815	PUSHs (sv_2mortal (newRV_noinc ((SV *)av)));
		816	PUTBACK;
		817	cb = hv_fetch ((HV *)SvRV (coro_current), strpair ("_trace_sub_cb"), 0);
		818	if (cb) call_sv (*cb, G_KEEPERR \| G_EVAL \| G_VOID \| G_DISCARD);
		819	SPAGAIN;
		820	FREETMPS;
		821	LEAVE;
		822	PL_runops = runops_trace;
		823	}
		824
		825	if (oldcop != PL_curcop)
		826	{
		827	oldcop = PL_curcop;
		828
		829	if (PL_curcop != &PL_compiling)
		830	{
		831	SV **cb;
		832
		833	if (oldcxix != cxstack_ix && cctx->flags & CC_TRACE_SUB)
		834	{
		835	PERL_CONTEXT *cx = &cxstack[cxstack_ix];
		836
		837	if (CxTYPE (cx) == CXt_SUB && oldcxix < cxstack_ix)
		838	{
		839	runops_proc_t old_runops = PL_runops;
		840	dSP;
		841	GV *gv = CvGV (cx->blk_sub.cv);
		842	SV *fullname = sv_2mortal (newSV (0));
		843
		844	if (isGV (gv))
		845	gv_efullname3 (fullname, gv, 0);
		846
		847	PL_runops = RUNOPS_DEFAULT;
		848	ENTER;
		849	SAVETMPS;
		850	EXTEND (SP, 3);
		851	PUSHMARK (SP);
		852	PUSHs (&PL_sv_yes);
		853	PUSHs (fullname);
		854	PUSHs (cx->blk_sub.hasargs ? sv_2mortal (newRV_inc ((SV *)cx->blk_sub.argarray)) : &PL_sv_undef);
		855	PUTBACK;
		856	cb = hv_fetch ((HV *)SvRV (coro_current), strpair ("_trace_sub_cb"), 0);
		857	if (cb) call_sv (*cb, G_KEEPERR \| G_EVAL \| G_VOID \| G_DISCARD);
		858	SPAGAIN;
		859	FREETMPS;
		860	LEAVE;
		861	PL_runops = runops_trace;
		862	}
		863
		864	oldcxix = cxstack_ix;
		865	}
		866
		867	if (cctx->flags & CC_TRACE_LINE)
		868	{
		869	dSP;
		870
		871	PL_runops = RUNOPS_DEFAULT;
		872	ENTER;
		873	SAVETMPS;
		874	EXTEND (SP, 3);
		875	PL_runops = RUNOPS_DEFAULT;
		876	PUSHMARK (SP);
		877	PUSHs (sv_2mortal (newSVpv (OutCopFILE (oldcop), 0)));
		878	PUSHs (sv_2mortal (newSViv (CopLINE (oldcop))));
		879	PUTBACK;
		880	cb = hv_fetch ((HV *)SvRV (coro_current), strpair ("_trace_line_cb"), 0);
		881	if (cb) call_sv (*cb, G_KEEPERR \| G_EVAL \| G_VOID \| G_DISCARD);
		882	SPAGAIN;
		883	FREETMPS;
		884	LEAVE;
		885	PL_runops = runops_trace;
		886	}
		887	}
		888	}
		889	}
		890	}
		891
		892	TAINT_NOT;
		893	return 0;
		894	}
		895
		896	/* inject a fake call to Coro::State::_cctx_init into the execution */
		897	/* _cctx_init should be careful, as it could be called at almost any time */
		898	/* during execution of a perl program */
		899	static void NOINLINE
		900	cctx_prepare (pTHX_ coro_cctx *cctx)
		901	{
		902	dSP;
		903	LOGOP myop;
		904
		905	PL_top_env = &PL_start_env;
		906
		907	if (cctx->flags & CC_TRACE)
		908	PL_runops = runops_trace;
		909
		910	Zero (&myop, 1, LOGOP);
		911	myop.op_next = PL_op;
		912	myop.op_flags = OPf_WANT_VOID \| OPf_STACKED;
		913
		914	PUSHMARK (SP);
		915	EXTEND (SP, 2);
		916	PUSHs (sv_2mortal (newSViv (PTR2IV (cctx))));
		917	PUSHs ((SV *)get_cv ("Coro::State::_cctx_init", FALSE));
		918	PUTBACK;
		919	PL_op = (OP *)&myop;
		920	PL_op = PL_ppaddr[OP_ENTERSUB](aTHX);
		921	SPAGAIN;
		922	}
		923
		924	/*
		925	* this is a _very_ stripped down perl interpreter ;)
		926	*/
		927	static void
		928	cctx_run (void *arg)
		929	{
601	dTHX;	930	dTHX;
602	dSP;
603	Coro__State ctx = (Coro__State)arg;
604	SV sub_init = (SV )get_cv (SUB_INIT, FALSE);
605		931
606	coro_init_stacks (aTHX);	932	/* cctx_run is the alternative tail of transfer(), so unlock here. */
607	/PL_curcop = 0;/	933	UNLOCK;
608	/PL_in_eval = PL_in_eval;/ /* inherit */
609	SvREFCNT_dec (GvAV (PL_defgv));
610	GvAV (PL_defgv) = ctx->args; ctx->args = 0;
611		934
612	SPAGAIN;	935	/* we now skip the entersub that lead to transfer() */
		936	PL_op = PL_op->op_next;
613		937
614	if (ctx->stack)	938	/* inject a fake subroutine call to cctx_init */
615	{	939	cctx_prepare (aTHX_ (coro_cctx *)arg);
616	ctx->cursp = 0;
617		940
618	PUSHMARK(SP);	941	/* somebody or something will hit me for both perl_run and PL_restartop */
619	PUTBACK;	942	PL_restartop = PL_op;
620	(void) call_sv (sub_init, G_VOID\|G_NOARGS\|G_EVAL);	943	perl_run (PL_curinterp);
621		944
622	if (SvTRUE (ERRSV))	945	/*
623	croak (NULL);	946	* If perl-run returns we assume exit() was being called or the coro
624	else	947	* fell off the end, which seems to be the only valid (non-bug)
625	croak ("FATAL: CCTXT coroutine returned!");	948	* reason for perl_run to return. We try to exit by jumping to the
		949	* bootstrap-time "top" top_env, as we cannot restore the "main"
		950	* coroutine as Coro has no such concept
		951	*/
		952	PL_top_env = main_top_env;
		953	JMPENV_JUMP (2); /* I do not feel well about the hardcoded 2 at all */
		954	}
		955
		956	static coro_cctx *
		957	cctx_new ()
		958	{
		959	coro_cctx *cctx;
		960	void *stack_start;
		961	size_t stack_size;
		962
		963	++cctx_count;
		964
		965	Newz (0, cctx, 1, coro_cctx);
		966
		967	#if HAVE_MMAP
		968	cctx->ssize = ((coro_stacksize * sizeof (long) + PAGESIZE - 1) / PAGESIZE + CORO_STACKGUARD) * PAGESIZE;
		969	/* mmap supposedly does allocate-on-write for us */
		970	cctx->sptr = mmap (0, cctx->ssize, PROT_EXEC\|PROT_READ\|PROT_WRITE, MAP_PRIVATE\|MAP_ANONYMOUS, 0, 0);
		971
		972	if (cctx->sptr != (void *)-1)
		973	{
		974	# if CORO_STACKGUARD
		975	mprotect (cctx->sptr, CORO_STACKGUARD * PAGESIZE, PROT_NONE);
		976	# endif
		977	stack_start = CORO_STACKGUARD * PAGESIZE + (char *)cctx->sptr;
		978	stack_size = cctx->ssize - CORO_STACKGUARD * PAGESIZE;
		979	cctx->flags \|= CC_MAPPED;
626	}	980	}
627	else	981	else
628	{	982	#endif
629	UNOP myop;
630
631	Zero(&myop, 1, UNOP);
632	myop.op_next = Nullop;
633	myop.op_flags = OPf_WANT_VOID;
634
635	PL_op = (OP *)&myop;
636
637	PUSHMARK(SP);
638	XPUSHs (sub_init);
639	/*
640	* the next line is slightly wrong, as PL_op->op_next
641	* is actually being executed so we skip the first op.
642	* that doesn't matter, though, since it is only
643	* pp_nextstate and we never return...
644	* ah yes, and I don't care anyways ;)
645	*/
646	PUTBACK;
647	PL_op = PL_ppaddr[OP_ENTERSUB](aTHX);
648	SPAGAIN;
649
650	ENTER; /* necessary e.g. for dounwind */
651	}	983	{
652	}	984	cctx->ssize = coro_stacksize * (long)sizeof (long);
		985	New (0, cctx->sptr, coro_stacksize, long);
653		986
654	static void	987	if (!cctx->sptr)
655	continue_coro (void *arg)	988	{
656	{	989	perror ("FATAL: unable to allocate stack for coroutine");
657	/*	990	_exit (EXIT_FAILURE);
658	* this is a _very_ stripped down perl interpreter ;)	991	}
659	*/
660	dTHX;
661	Coro__State ctx = (Coro__State)arg;
662		992
663	PL_top_env = &PL_start_env;	993	stack_start = cctx->sptr;
		994	stack_size = cctx->ssize;
		995	}
664		996
665	ctx->cursp = 0;	997	REGISTER_STACK (cctx, (char )stack_start, (char )stack_start + stack_size);
666	PL_op = PL_op->op_next;	998	coro_create (&cctx->cctx, cctx_run, (void *)cctx, stack_start, stack_size);
667	CALLRUNOPS(aTHX);
668		999
669	abort ();	1000	return cctx;
670	}	1001	}
671		1002
672	/* never call directly, always through the coro_state_transfer global variable */
673	static void	1003	static void
		1004	cctx_destroy (coro_cctx *cctx)
		1005	{
		1006	if (!cctx)
		1007	return;
		1008
		1009	--cctx_count;
		1010
		1011	#if CORO_USE_VALGRIND
		1012	VALGRIND_STACK_DEREGISTER (cctx->valgrind_id);
		1013	#endif
		1014
		1015	#if HAVE_MMAP
		1016	if (cctx->flags & CC_MAPPED)
		1017	munmap (cctx->sptr, cctx->ssize);
		1018	else
		1019	#endif
		1020	Safefree (cctx->sptr);
		1021
		1022	Safefree (cctx);
		1023	}
		1024
		1025	/* wether this cctx should be destructed */
		1026	#define CCTX_EXPIRED(cctx) ((cctx)->ssize < coro_stacksize \|\| ((cctx)->flags & CC_NOREUSE))
		1027
		1028	static coro_cctx *
		1029	cctx_get (pTHX)
		1030	{
		1031	while (expect_true (cctx_first))
		1032	{
		1033	coro_cctx *cctx = cctx_first;
		1034	cctx_first = cctx->next;
		1035	--cctx_idle;
		1036
		1037	if (expect_true (!CCTX_EXPIRED (cctx)))
		1038	return cctx;
		1039
		1040	cctx_destroy (cctx);
		1041	}
		1042
		1043	return cctx_new ();
		1044	}
		1045
		1046	static void
		1047	cctx_put (coro_cctx *cctx)
		1048	{
		1049	/* free another cctx if overlimit */
		1050	if (expect_false (cctx_idle >= MAX_IDLE_CCTX))
		1051	{
		1052	coro_cctx *first = cctx_first;
		1053	cctx_first = first->next;
		1054	--cctx_idle;
		1055
		1056	cctx_destroy (first);
		1057	}
		1058
		1059	++cctx_idle;
		1060	cctx->next = cctx_first;
		1061	cctx_first = cctx;
		1062	}
		1063
		1064	/ coroutine switching ***************************************************/
		1065
		1066	static void
		1067	transfer_check (pTHX_ struct coro prev, struct coro next)
		1068	{
		1069	if (expect_true (prev != next))
		1070	{
		1071	if (expect_false (!(prev->flags & (CF_RUNNING \| CF_NEW))))
		1072	croak ("Coro::State::transfer called with non-running/new prev Coro::State, but can only transfer from running or new states");
		1073
		1074	if (expect_false (next->flags & CF_RUNNING))
		1075	croak ("Coro::State::transfer called with running next Coro::State, but can only transfer to inactive states");
		1076
		1077	if (expect_false (next->flags & CF_DESTROYED))
		1078	croak ("Coro::State::transfer called with destroyed next Coro::State, but can only transfer to inactive states");
		1079
		1080	if (
		1081	#if PERL_VERSION_ATLEAST (5,9,0)
		1082	expect_false (PL_parser)
		1083	#else
		1084	expect_false (PL_lex_state != LEX_NOTPARSING)
		1085	#endif
		1086	)
		1087	croak ("Coro::State::transfer called while parsing, but this is not supported");
		1088	}
		1089	}
		1090
		1091	/* always use the TRANSFER macro */
		1092	static void NOINLINE
674	transfer_impl (pTHX_ struct coro prev, struct coro next, int flags)	1093	transfer (pTHX_ struct coro prev, struct coro next)
675	{	1094	{
676	dSTACKLEVEL;	1095	dSTACKLEVEL;
677		1096
678	if (prev != next)	1097	/* sometimes transfer is only called to set idle_sp */
		1098	if (expect_false (!next))
		1099	{
		1100	((coro_cctx *)prev)->idle_sp = STACKLEVEL;
		1101	assert (((coro_cctx )prev)->idle_te = PL_top_env); / just for the side-effect when asserts are enabled */
679	{	1102	}
680	/* has this coro been created yet? */	1103	else if (expect_true (prev != next))
681	if (next->mainstack)	1104	{
		1105	coro_cctx *prev__cctx;
		1106
		1107	if (expect_false (prev->flags & CF_NEW))
682	{	1108	{
683	LOCK;	1109	/* create a new empty context */
684	SAVE (prev, flags);	1110	Newz (0, prev->cctx, 1, coro_cctx);
685	LOAD (next);	1111	prev->flags &= ~CF_NEW;
686	UNLOCK;	1112	prev->flags \|= CF_RUNNING;
687
688	/* mark this state as in-use */
689	next->mainstack = 0;
690	next->tmps_ix = -2;
691
692	/* stacklevel changed? if yes, grab the stack for us! */
693	if (flags & TRANSFER_SAVE_CCTXT)
694	{
695	if (!prev->stack)
696	allocate_stack (prev, 0);
697	else if (prev->cursp != stacklevel
698	&& prev->stack->usecnt > 1)
699	{
700	prev->gencnt = ++prev->stack->gencnt;
701	prev->stack->usecnt = 1;
702	}
703
704	/* has our stack been invalidated? */
705	if (next->stack && next->stack->gencnt != next->gencnt)
706	{
707	deallocate_stack (next);
708	allocate_stack (next, 1);
709	coro_create (&(next->stack->cctx),
710	continue_coro, (void *)next,
711	next->stack->sptr, labs (next->stack->ssize));
712	}
713
714	coro_transfer (&(prev->stack->cctx), &(next->stack->cctx));
715	prev->cursp = stacklevel;
716	/* don't add any code here */
717	}
718	else
719	next->cursp = stacklevel;
720	}	1113	}
721	else if (next->tmps_ix == -2)	1114
722	croak ("tried to transfer to running coroutine");	1115	prev->flags &= ~CF_RUNNING;
		1116	next->flags \|= CF_RUNNING;
		1117
		1118	LOCK;
		1119
		1120	if (expect_false (next->flags & CF_NEW))
		1121	{
		1122	/* need to start coroutine */
		1123	next->flags &= ~CF_NEW;
		1124	/* first get rid of the old state */
		1125	save_perl (aTHX_ prev);
		1126	/* setup coroutine call */
		1127	coro_setup (aTHX_ next);
		1128	}
723	else	1129	else
724	{	1130	{
725	LOCK;	1131	/* coroutine already started */
726	SAVE (prev, -1); /* first get rid of the old state */	1132	save_perl (aTHX_ prev);
		1133	load_perl (aTHX_ next);
		1134	}
		1135
		1136	prev__cctx = prev->cctx;
		1137
		1138	/* possibly "free" the cctx */
		1139	if (expect_true (prev__cctx->idle_sp == STACKLEVEL && !(prev__cctx->flags & CC_TRACE)))
		1140	{
		1141	/* I assume that STACKLEVEL is a stronger indicator than PL_top_env changes */
		1142	assert (("ERROR: current top_env must equal previous top_env", PL_top_env == prev__cctx->idle_te));
		1143
		1144	prev->cctx = 0;
		1145
		1146	/* if the cctx is about to be destroyed we need to make sure we won't see it in cctx_get */
		1147	/* without this the next cctx_get might destroy the prev__cctx while still in use */
		1148	if (expect_false (CCTX_EXPIRED (prev__cctx)))
		1149	if (!next->cctx)
		1150	next->cctx = cctx_get (aTHX);
		1151
		1152	cctx_put (prev__cctx);
		1153	}
		1154
		1155	++next->usecount;
		1156
		1157	if (expect_true (!next->cctx))
		1158	next->cctx = cctx_get (aTHX);
		1159
		1160	if (expect_false (prev__cctx != next->cctx))
		1161	{
		1162	prev__cctx->top_env = PL_top_env;
		1163	PL_top_env = next->cctx->top_env;
		1164	coro_transfer (&prev__cctx->cctx, &next->cctx->cctx);
		1165	}
		1166
		1167	free_coro_mortal (aTHX);
727	UNLOCK;	1168	UNLOCK;
728		1169
729	/* create the coroutine for the first time */	1170	if (expect_false (prev->throw \|\| next->throw))
730	if (flags & TRANSFER_SAVE_CCTXT)	1171	{
		1172	struct coro *coro = SvSTATE (coro_current);
		1173
		1174	if (coro->throw)
731	{	1175	{
732	if (!prev->stack)	1176	SV *exception = coro->throw;
733	allocate_stack (prev, 0);	1177	coro->throw = 0;
734		1178	sv_setsv (ERRSV, exception);
735	/* the new coroutine starts with start_env again */
736	PL_top_env = &PL_start_env;
737
738	if (prev->stack->sptr && flags & TRANSFER_LAZY_STACK)
739	{
740	setup_coro (next);
741	next->cursp = stacklevel;
742
743	prev->stack->refcnt++;
744	prev->stack->usecnt++;
745	next->stack = prev->stack;
746	next->gencnt = prev->gencnt;
747	}
748	else
749	{
750	assert (!next->stack);
751	allocate_stack (next, 1);
752	coro_create (&(next->stack->cctx),
753	setup_coro, (void *)next,
754	next->stack->sptr, labs (next->stack->ssize));
755	coro_transfer (&(prev->stack->cctx), &(next->stack->cctx));
756	prev->cursp = stacklevel;
757	/* don't add any code here */
758	}
759	}
760	else
761	{
762	setup_coro (next);	1179	croak (0);
763	next->cursp = stacklevel;
764	}	1180	}
765	}	1181	}
766	}	1182	}
		1183	}
767		1184
768	LOCK;	1185	struct transfer_args
769	if (coro_mortal)	1186	{
770	{	1187	struct coro prev, next;
771	SvREFCNT_dec (coro_mortal);	1188	};
772	coro_mortal = 0;	1189
		1190	#define TRANSFER(ta) transfer (aTHX_ (ta).prev, (ta).next)
		1191	#define TRANSFER_CHECK(ta) transfer_check (aTHX_ (ta).prev, (ta).next)
		1192
		1193	/ high level stuff ******************************************************/
		1194
		1195	static int
		1196	coro_state_destroy (pTHX_ struct coro *coro)
		1197	{
		1198	if (coro->flags & CF_DESTROYED)
		1199	return 0;
		1200
		1201	coro->flags \|= CF_DESTROYED;
		1202
		1203	if (coro->flags & CF_READY)
773	}	1204	{
		1205	/* reduce nready, as destroying a ready coro effectively unreadies it */
		1206	/* alternative: look through all ready queues and remove the coro */
		1207	LOCK;
		1208	--coro_nready;
774	UNLOCK;	1209	UNLOCK;
775	}	1210	}
		1211	else
		1212	coro->flags \|= CF_READY; /* make sure it is NOT put into the readyqueue */
776		1213
777	/* use this function pointer to call the above function */	1214	if (coro->mainstack && coro->mainstack != main_mainstack)
778	/* this is done to increase chances of the compiler not inlining the call */	1215	{
779	void (coro_state_transfer)(pTHX_ struct coro prev, struct coro *next, int flags) = transfer_impl;	1216	struct coro temp;
780		1217
781	#define SV_CORO(sv,func) \	1218	if (coro->flags & CF_RUNNING)
782	do { \	1219	croak ("FATAL: tried to destroy currently running coroutine");
783	if (SvROK (sv)) \
784	sv = SvRV (sv); \
785	\
786	if (SvTYPE (sv) == SVt_PVHV) \
787	{ \
788	HE he = hv_fetch_ent ((HV )sv, ucoro_state_sv, 0, ucoro_state_hash); \
789	\
790	if (!he) \
791	croak ("%s() -- %s is a hashref but lacks the " UCORO_STATE " key", func, # sv); \
792	\
793	(sv) = SvRV (HeVAL(he)); \
794	} \
795	\
796	/* must also be changed inside Coro::Cont::yield */ \
797	if (!SvOBJECT (sv) \|\| SvSTASH (sv) != coro_state_stash) \
798	croak ("%s() -- %s is not (and contains not) a Coro::State object", func, # sv); \
799	\
800	} while(0)
801		1220
802	#define SvSTATE(sv) INT2PTR (struct coro *, SvIVX (sv))	1221	save_perl (aTHX_ &temp);
		1222	load_perl (aTHX_ coro);
803		1223
		1224	coro_destroy (aTHX_ coro);
		1225
		1226	load_perl (aTHX_ &temp);
		1227
		1228	coro->slot = 0;
		1229	}
		1230
		1231	cctx_destroy (coro->cctx);
		1232	SvREFCNT_dec (coro->args);
		1233
		1234	if (coro->next) coro->next->prev = coro->prev;
		1235	if (coro->prev) coro->prev->next = coro->next;
		1236	if (coro == coro_first) coro_first = coro->next;
		1237
		1238	return 1;
		1239	}
		1240
804	static void	1241	static int
		1242	coro_state_free (pTHX_ SV sv, MAGIC mg)
		1243	{
		1244	struct coro coro = (struct coro )mg->mg_ptr;
		1245	mg->mg_ptr = 0;
		1246
		1247	coro->hv = 0;
		1248
		1249	if (--coro->refcnt < 0)
		1250	{
		1251	coro_state_destroy (aTHX_ coro);
		1252	Safefree (coro);
		1253	}
		1254
		1255	return 0;
		1256	}
		1257
		1258	static int
		1259	coro_state_dup (pTHX_ MAGIC mg, CLONE_PARAMS params)
		1260	{
		1261	struct coro coro = (struct coro )mg->mg_ptr;
		1262
		1263	++coro->refcnt;
		1264
		1265	return 0;
		1266	}
		1267
		1268	static MGVTBL coro_state_vtbl = {
		1269	0, 0, 0, 0,
		1270	coro_state_free,
		1271	0,
		1272	#ifdef MGf_DUP
		1273	coro_state_dup,
		1274	#else
		1275	# define MGf_DUP 0
		1276	#endif
		1277	};
		1278
		1279	static void
		1280	prepare_transfer (pTHX_ struct transfer_args ta, SV prev_sv, SV *next_sv)
		1281	{
		1282	ta->prev = SvSTATE (prev_sv);
		1283	ta->next = SvSTATE (next_sv);
		1284	TRANSFER_CHECK (*ta);
		1285	}
		1286
		1287	static void
805	api_transfer (pTHX_ SV prev, SV next, int flags)	1288	api_transfer (SV prev_sv, SV next_sv)
806	{	1289	{
807	SV_CORO (prev, "Coro::transfer");	1290	dTHX;
808	SV_CORO (next, "Coro::transfer");	1291	struct transfer_args ta;
809		1292
810	coro_state_transfer (aTHX_ SvSTATE (prev), SvSTATE (next), flags);	1293	prepare_transfer (aTHX_ &ta, prev_sv, next_sv);
		1294	TRANSFER (ta);
811	}	1295	}
812		1296
813	/ Coro ******************************************************************/	1297	/ Coro ******************************************************************/
814		1298
815	#define PRIO_MAX 3
816	#define PRIO_HIGH 1
817	#define PRIO_NORMAL 0
818	#define PRIO_LOW -1
819	#define PRIO_IDLE -3
820	#define PRIO_MIN -4
821
822	/* for Coro.pm */
823	static GV coro_current, coro_idle;
824	static AV *coro_ready [PRIO_MAX-PRIO_MIN+1];
825	static int coro_nready;
826
827	static void	1299	static void
828	coro_enq (pTHX_ SV *sv)	1300	coro_enq (pTHX_ SV *coro_sv)
829	{	1301	{
830	SV **xprio;
831	int prio;
832
833	if (SvTYPE (sv) != SVt_PVHV)
834	croak ("Coro::ready tried to enqueue something that is not a coroutine");
835
836	xprio = hv_fetch ((HV *)sv, "prio", 4, 0);
837	prio = xprio ? SvIV (*xprio) : PRIO_NORMAL;
838
839	prio = prio > PRIO_MAX ? PRIO_MAX
840	: prio < PRIO_MIN ? PRIO_MIN
841	: prio;
842
843	av_push (coro_ready [prio - PRIO_MIN], sv);	1302	av_push (coro_ready [SvSTATE (coro_sv)->prio - PRIO_MIN], coro_sv);
844	coro_nready++;
845	}	1303	}
846		1304
847	static SV *	1305	static SV *
848	coro_deq (pTHX_ int min_prio)	1306	coro_deq (pTHX_ int min_prio)
849	{	1307	{
…		…
853	if (min_prio < 0)	1311	if (min_prio < 0)
854	min_prio = 0;	1312	min_prio = 0;
855		1313
856	for (prio = PRIO_MAX - PRIO_MIN + 1; --prio >= min_prio; )	1314	for (prio = PRIO_MAX - PRIO_MIN + 1; --prio >= min_prio; )
857	if (AvFILLp (coro_ready [prio]) >= 0)	1315	if (AvFILLp (coro_ready [prio]) >= 0)
858	{
859	coro_nready--;
860	return av_shift (coro_ready [prio]);	1316	return av_shift (coro_ready [prio]);
861	}
862		1317
863	return 0;	1318	return 0;
864	}	1319	}
865		1320
866	static void	1321	static int
867	api_ready (SV *coro)	1322	api_ready (SV *coro_sv)
868	{	1323	{
869	dTHX;	1324	dTHX;
		1325	struct coro *coro;
870		1326
871	if (SvROK (coro))	1327	if (SvROK (coro_sv))
872	coro = SvRV (coro);	1328	coro_sv = SvRV (coro_sv);
		1329
		1330	coro = SvSTATE (coro_sv);
		1331
		1332	if (coro->flags & CF_READY)
		1333	return 0;
		1334
		1335	coro->flags \|= CF_READY;
873		1336
874	LOCK;	1337	LOCK;
875	coro_enq (aTHX_ SvREFCNT_inc (coro));	1338	coro_enq (aTHX_ SvREFCNT_inc (coro_sv));
		1339	++coro_nready;
876	UNLOCK;	1340	UNLOCK;
		1341
		1342	return 1;
		1343	}
		1344
		1345	static int
		1346	api_is_ready (SV *coro_sv)
		1347	{
		1348	dTHX;
		1349	return !!(SvSTATE (coro_sv)->flags & CF_READY);
		1350	}
		1351
		1352	static void
		1353	prepare_schedule (pTHX_ struct transfer_args *ta)
		1354	{
		1355	SV prev_sv, next_sv;
		1356
		1357	for (;;)
		1358	{
		1359	LOCK;
		1360	next_sv = coro_deq (aTHX_ PRIO_MIN);
		1361
		1362	/* nothing to schedule: call the idle handler */
		1363	if (expect_false (!next_sv))
		1364	{
		1365	dSP;
		1366	UNLOCK;
		1367
		1368	ENTER;
		1369	SAVETMPS;
		1370
		1371	PUSHMARK (SP);
		1372	PUTBACK;
		1373	call_sv (get_sv ("Coro::idle", FALSE), G_DISCARD);
		1374
		1375	FREETMPS;
		1376	LEAVE;
		1377	continue;
		1378	}
		1379
		1380	ta->next = SvSTATE (next_sv);
		1381
		1382	/* cannot transfer to destroyed coros, skip and look for next */
		1383	if (expect_false (ta->next->flags & CF_DESTROYED))
		1384	{
		1385	UNLOCK;
		1386	SvREFCNT_dec (next_sv);
		1387	/* coro_nready is already taken care of by destroy */
		1388	continue;
		1389	}
		1390
		1391	--coro_nready;
		1392	UNLOCK;
		1393	break;
		1394	}
		1395
		1396	/* free this only after the transfer */
		1397	prev_sv = SvRV (coro_current);
		1398	ta->prev = SvSTATE (prev_sv);
		1399	TRANSFER_CHECK (*ta);
		1400	assert (ta->next->flags & CF_READY);
		1401	ta->next->flags &= ~CF_READY;
		1402	SvRV_set (coro_current, next_sv);
		1403
		1404	LOCK;
		1405	free_coro_mortal (aTHX);
		1406	coro_mortal = prev_sv;
		1407	UNLOCK;
		1408	}
		1409
		1410	static void
		1411	prepare_cede (pTHX_ struct transfer_args *ta)
		1412	{
		1413	api_ready (coro_current);
		1414	prepare_schedule (aTHX_ ta);
		1415	}
		1416
		1417	static int
		1418	prepare_cede_notself (pTHX_ struct transfer_args *ta)
		1419	{
		1420	if (coro_nready)
		1421	{
		1422	SV *prev = SvRV (coro_current);
		1423	prepare_schedule (aTHX_ ta);
		1424	api_ready (prev);
		1425	return 1;
		1426	}
		1427	else
		1428	return 0;
877	}	1429	}
878		1430
879	static void	1431	static void
880	api_schedule (void)	1432	api_schedule (void)
881	{	1433	{
882	dTHX;	1434	dTHX;
		1435	struct transfer_args ta;
883		1436
884	SV prev, next;	1437	prepare_schedule (aTHX_ &ta);
885		1438	TRANSFER (ta);
886	LOCK;
887
888	prev = SvRV (GvSV (coro_current));
889	next = coro_deq (aTHX_ PRIO_MIN);
890
891	if (!next)
892	next = SvREFCNT_inc (SvRV (GvSV (coro_idle)));
893
894	/* free this only after the transfer */
895	coro_mortal = prev;
896	SV_CORO (prev, "Coro::schedule");
897
898	SvRV (GvSV (coro_current)) = next;
899
900	SV_CORO (next, "Coro::schedule");
901
902	UNLOCK;
903
904	coro_state_transfer (aTHX_ SvSTATE (prev), SvSTATE (next),
905	TRANSFER_SAVE_ALL \| TRANSFER_LAZY_STACK);
906	}	1439	}
907		1440
908	static void	1441	static int
909	api_cede (void)	1442	api_cede (void)
910	{	1443	{
911	dTHX;	1444	dTHX;
		1445	struct transfer_args ta;
912		1446
913	LOCK;	1447	prepare_cede (aTHX_ &ta);
914	coro_enq (aTHX_ SvREFCNT_inc (SvRV (GvSV (coro_current))));
915	UNLOCK;
916		1448
917	api_schedule ();	1449	if (expect_true (ta.prev != ta.next))
		1450	{
		1451	TRANSFER (ta);
		1452	return 1;
		1453	}
		1454	else
		1455	return 0;
918	}	1456	}
919		1457
		1458	static int
		1459	api_cede_notself (void)
		1460	{
		1461	dTHX;
		1462	struct transfer_args ta;
		1463
		1464	if (prepare_cede_notself (aTHX_ &ta))
		1465	{
		1466	TRANSFER (ta);
		1467	return 1;
		1468	}
		1469	else
		1470	return 0;
		1471	}
		1472
		1473	static void
		1474	api_trace (SV *coro_sv, int flags)
		1475	{
		1476	dTHX;
		1477	struct coro *coro = SvSTATE (coro_sv);
		1478
		1479	if (flags & CC_TRACE)
		1480	{
		1481	if (!coro->cctx)
		1482	coro->cctx = cctx_new ();
		1483	else if (!(coro->cctx->flags & CC_TRACE))
		1484	croak ("cannot enable tracing on coroutine with custom stack");
		1485
		1486	coro->cctx->flags \|= CC_NOREUSE \| (flags & (CC_TRACE \| CC_TRACE_ALL));
		1487	}
		1488	else if (coro->cctx && coro->cctx->flags & CC_TRACE)
		1489	{
		1490	coro->cctx->flags &= ~(CC_TRACE \| CC_TRACE_ALL);
		1491
		1492	if (coro->flags & CF_RUNNING)
		1493	PL_runops = RUNOPS_DEFAULT;
		1494	else
		1495	coro->slot->runops = RUNOPS_DEFAULT;
		1496	}
		1497	}
		1498
920	MODULE = Coro::State PACKAGE = Coro::State	1499	MODULE = Coro::State PACKAGE = Coro::State PREFIX = api_
921		1500
922	PROTOTYPES: ENABLE	1501	PROTOTYPES: DISABLE
923		1502
924	BOOT:	1503	BOOT:
925	{ /* {} necessary for stoopid perl-5.6.x */	1504	{
926	#ifdef USE_ITHREADS	1505	#ifdef USE_ITHREADS
927	MUTEX_INIT (&coro_mutex);	1506	MUTEX_INIT (&coro_mutex);
928	#endif	1507	#endif
929	BOOT_PAGESIZE;	1508	BOOT_PAGESIZE;
930		1509
931	ucoro_state_sv = newSVpv (UCORO_STATE, sizeof(UCORO_STATE) - 1);	1510	irsgv = gv_fetchpv ("/" , GV_ADD\|GV_NOTQUAL, SVt_PV);
932	PERL_HASH(ucoro_state_hash, UCORO_STATE, sizeof(UCORO_STATE) - 1);	1511	stdoutgv = gv_fetchpv ("STDOUT", GV_ADD\|GV_NOTQUAL, SVt_PVIO);
		1512
		1513	hv_sig = coro_get_hv ("SIG", TRUE);
		1514	sv_diehook = coro_get_sv ("Coro::State::DIEHOOK" , TRUE);
		1515	sv_warnhook = coro_get_sv ("Coro::State::WARNHOOK", TRUE);
		1516
		1517	if (!PL_diehook ) hv_store (hv_sig, strpair ("__DIE__" ), SvREFCNT_inc (sv_diehook ), 0);
		1518	if (!PL_warnhook) hv_store (hv_sig, strpair ("__WARN__"), SvREFCNT_inc (sv_warnhook), 0);
		1519
933	coro_state_stash = gv_stashpv ("Coro::State", TRUE);	1520	coro_state_stash = gv_stashpv ("Coro::State", TRUE);
934		1521
935	newCONSTSUB (coro_state_stash, "SAVE_DEFAV", newSViv (TRANSFER_SAVE_DEFAV));	1522	newCONSTSUB (coro_state_stash, "CC_TRACE" , newSViv (CC_TRACE));
936	newCONSTSUB (coro_state_stash, "SAVE_DEFSV", newSViv (TRANSFER_SAVE_DEFSV));	1523	newCONSTSUB (coro_state_stash, "CC_TRACE_SUB" , newSViv (CC_TRACE_SUB));
937	newCONSTSUB (coro_state_stash, "SAVE_ERRSV", newSViv (TRANSFER_SAVE_ERRSV));	1524	newCONSTSUB (coro_state_stash, "CC_TRACE_LINE", newSViv (CC_TRACE_LINE));
938	newCONSTSUB (coro_state_stash, "SAVE_CCTXT", newSViv (TRANSFER_SAVE_CCTXT));	1525	newCONSTSUB (coro_state_stash, "CC_TRACE_ALL" , newSViv (CC_TRACE_ALL));
939		1526
940	main_mainstack = PL_mainstack;	1527	main_mainstack = PL_mainstack;
		1528	main_top_env = PL_top_env;
		1529
		1530	while (main_top_env->je_prev)
		1531	main_top_env = main_top_env->je_prev;
941		1532
942	coroapi.ver = CORO_API_VERSION;	1533	coroapi.ver = CORO_API_VERSION;
		1534	coroapi.rev = CORO_API_REVISION;
943	coroapi.transfer = api_transfer;	1535	coroapi.transfer = api_transfer;
944	}
945		1536
946	Coro::State	1537	assert (("PRIO_NORMAL must be 0", !PRIO_NORMAL));
		1538	}
		1539
		1540	SV *
947	new (char *klass, ...)	1541	new (char *klass, ...)
948	PROTOTYPE: $@
949	CODE:	1542	CODE:
950	{	1543	{
951	Coro__State coro;	1544	struct coro *coro;
		1545	HV *hv;
952	int i;	1546	int i;
953		1547
954	if (!SvOK (ST (1)))
955	croak ("Coro::State::new needs something callable as first argument");
956
957	Newz (0, coro, 1, struct coro);	1548	Newz (0, coro, 1, struct coro);
958	coro->args = newAV ();	1549	coro->args = newAV ();
		1550	coro->flags = CF_NEW;
959		1551
		1552	if (coro_first) coro_first->prev = coro;
		1553	coro->next = coro_first;
		1554	coro_first = coro;
		1555
		1556	coro->hv = hv = newHV ();
		1557	sv_magicext ((SV )hv, 0, PERL_MAGIC_ext, &coro_state_vtbl, (char )coro, 0)->mg_flags \|= MGf_DUP;
		1558	RETVAL = sv_bless (newRV_noinc ((SV *)hv), gv_stashpv (klass, 1));
		1559
		1560	av_extend (coro->args, items - 1);
960	for (i = 1; i < items; i++)	1561	for (i = 1; i < items; i++)
961	av_push (coro->args, newSVsv (ST (i)));	1562	av_push (coro->args, newSVsv (ST (i)));
962
963	RETVAL = coro;
964
965	/coro->mainstack = 0; //actual work is done inside transfer /
966	/coro->stack = 0;/
967	}	1563	}
968	OUTPUT:	1564	OUTPUT:
969	RETVAL	1565	RETVAL
970		1566
		1567	# these not obviously related functions are all rolled into the same xs
		1568	# function to increase chances that they all will call transfer with the same
		1569	# stack offset
971	void	1570	void
972	transfer(prev, next, flags)	1571	_set_stacklevel (...)
973	SV *prev	1572	ALIAS:
974	SV *next	1573	Coro::State::transfer = 1
975	int flags	1574	Coro::schedule = 2
976	PROTOTYPE: @	1575	Coro::cede = 3
		1576	Coro::cede_notself = 4
977	CODE:	1577	CODE:
		1578	{
		1579	struct transfer_args ta;
		1580
		1581	switch (ix)
		1582	{
		1583	case 0:
		1584	ta.prev = (struct coro )INT2PTR (coro_cctx , SvIV (ST (0)));
		1585	ta.next = 0;
		1586	break;
		1587
		1588	case 1:
		1589	if (items != 2)
		1590	croak ("Coro::State::transfer (prev,next) expects two arguments, not %d", items);
		1591
		1592	prepare_transfer (aTHX_ &ta, ST (0), ST (1));
		1593	break;
		1594
		1595	case 2:
		1596	prepare_schedule (aTHX_ &ta);
		1597	break;
		1598
		1599	case 3:
		1600	prepare_cede (aTHX_ &ta);
		1601	break;
		1602
		1603	case 4:
		1604	if (!prepare_cede_notself (aTHX_ &ta))
		1605	XSRETURN_EMPTY;
		1606
		1607	break;
		1608	}
		1609
		1610	BARRIER;
978	PUTBACK;	1611	PUTBACK;
979	SV_CORO (next, "Coro::transfer");	1612	TRANSFER (ta);
980	SV_CORO (prev, "Coro::transfer");	1613	SPAGAIN; /* might be the sp of a different coroutine now */
981	coro_state_transfer (aTHX_ SvSTATE (prev), SvSTATE (next), flags);	1614	/* be extra careful not to ever do anything after TRANSFER */
982	SPAGAIN;	1615	}
		1616
		1617	bool
		1618	_destroy (SV *coro_sv)
		1619	CODE:
		1620	RETVAL = coro_state_destroy (aTHX_ SvSTATE (coro_sv));
		1621	OUTPUT:
		1622	RETVAL
983		1623
984	void	1624	void
985	DESTROY(coro)
986	Coro::State coro
987	CODE:
988
989	if (coro->mainstack && coro->mainstack != main_mainstack)
990	{
991	struct coro temp;
992
993	PUTBACK;
994	SAVE (aTHX_ (&temp), TRANSFER_SAVE_ALL);
995	LOAD (aTHX_ coro);
996	SPAGAIN;
997
998	destroy_stacks (aTHX);
999
1000	LOAD ((&temp)); /* this will get rid of defsv etc.. */
1001	SPAGAIN;
1002
1003	coro->mainstack = 0;
1004	}
1005
1006	deallocate_stack (coro);
1007	SvREFCNT_dec (coro->args);
1008	Safefree (coro);
1009
1010	void
1011	_exit(code)	1625	_exit (code)
1012	int code	1626	int code
1013	PROTOTYPE: $	1627	PROTOTYPE: $
1014	CODE:	1628	CODE:
1015	_exit (code);	1629	_exit (code);
1016		1630
1017	MODULE = Coro::State PACKAGE = Coro::Cont	1631	int
		1632	cctx_stacksize (int new_stacksize = 0)
		1633	CODE:
		1634	RETVAL = coro_stacksize;
		1635	if (new_stacksize)
		1636	coro_stacksize = new_stacksize;
		1637	OUTPUT:
		1638	RETVAL
		1639
		1640	int
		1641	cctx_count ()
		1642	CODE:
		1643	RETVAL = cctx_count;
		1644	OUTPUT:
		1645	RETVAL
		1646
		1647	int
		1648	cctx_idle ()
		1649	CODE:
		1650	RETVAL = cctx_idle;
		1651	OUTPUT:
		1652	RETVAL
1018		1653
1019	void	1654	void
1020	yield(...)	1655	list ()
1021	PROTOTYPE: @	1656	PPCODE:
		1657	{
		1658	struct coro *coro;
		1659	for (coro = coro_first; coro; coro = coro->next)
		1660	if (coro->hv)
		1661	XPUSHs (sv_2mortal (newRV_inc ((SV *)coro->hv)));
		1662	}
		1663
		1664	void
		1665	call (Coro::State coro, SV *coderef)
		1666	ALIAS:
		1667	eval = 1
		1668	CODE:
		1669	{
		1670	if (coro->mainstack)
		1671	{
		1672	struct coro temp;
		1673
		1674	if (!(coro->flags & CF_RUNNING))
		1675	{
		1676	save_perl (aTHX_ &temp);
		1677	load_perl (aTHX_ coro);
		1678	}
		1679
		1680	{
		1681	dSP;
		1682	ENTER;
		1683	SAVETMPS;
		1684	PUTBACK;
		1685	PUSHSTACK;
		1686	PUSHMARK (SP);
		1687
		1688	if (ix)
		1689	eval_sv (coderef, 0);
		1690	else
		1691	call_sv (coderef, G_KEEPERR \| G_EVAL \| G_VOID \| G_DISCARD);
		1692
		1693	POPSTACK;
		1694	SPAGAIN;
		1695	FREETMPS;
		1696	LEAVE;
		1697	PUTBACK;
		1698	}
		1699
		1700	if (!(coro->flags & CF_RUNNING))
		1701	{
		1702	save_perl (aTHX_ coro);
		1703	load_perl (aTHX_ &temp);
		1704	}
		1705	}
		1706	}
		1707
		1708	SV *
		1709	is_ready (Coro::State coro)
		1710	PROTOTYPE: $
		1711	ALIAS:
		1712	is_ready = CF_READY
		1713	is_running = CF_RUNNING
		1714	is_new = CF_NEW
		1715	is_destroyed = CF_DESTROYED
		1716	CODE:
		1717	RETVAL = boolSV (coro->flags & ix);
		1718	OUTPUT:
		1719	RETVAL
		1720
		1721	void
		1722	api_trace (SV *coro, int flags = CC_TRACE \| CC_TRACE_SUB)
		1723
		1724	SV *
		1725	has_stack (Coro::State coro)
		1726	PROTOTYPE: $
		1727	CODE:
		1728	RETVAL = boolSV (!!coro->cctx);
		1729	OUTPUT:
		1730	RETVAL
		1731
		1732	int
		1733	is_traced (Coro::State coro)
		1734	PROTOTYPE: $
		1735	CODE:
		1736	RETVAL = (coro->cctx ? coro->cctx->flags : 0) & CC_TRACE_ALL;
		1737	OUTPUT:
		1738	RETVAL
		1739
		1740	IV
		1741	rss (Coro::State coro)
		1742	PROTOTYPE: $
		1743	ALIAS:
		1744	usecount = 1
1022	CODE:	1745	CODE:
1023	SV *yieldstack;	1746	switch (ix)
1024	SV *sv;	1747	{
1025	AV *defav = GvAV (PL_defgv);	1748	case 0: RETVAL = coro_rss (aTHX_ coro); break;
1026	struct coro prev, next;	1749	case 1: RETVAL = coro->usecount; break;
1027
1028	yieldstack = *hv_fetch (
1029	(HV *)SvRV (GvSV (coro_current)),
1030	"yieldstack", sizeof ("yieldstack") - 1,
1031	0	1750	}
1032	);	1751	OUTPUT:
		1752	RETVAL
1033		1753
1034	/* set up @_ -- ugly */
1035	av_clear (defav);
1036	av_fill (defav, items - 1);
1037	while (items--)
1038	av_store (defav, items, SvREFCNT_inc (ST(items)));
1039
1040	sv = av_pop ((AV *)SvRV (yieldstack));
1041	prev = SvSTATE ((SV)SvRV (av_fetch ((AV *)SvRV (sv), 0, 0)));
1042	next = SvSTATE ((SV)SvRV (av_fetch ((AV *)SvRV (sv), 1, 0)));
1043	SvREFCNT_dec (sv);
1044
1045	coro_state_transfer (aTHX_ prev, next, 0);
1046		1754
1047	MODULE = Coro::State PACKAGE = Coro	1755	MODULE = Coro::State PACKAGE = Coro
1048		1756
1049	BOOT:	1757	BOOT:
1050	{	1758	{
1051	int i;	1759	int i;
		1760
		1761	sv_pool_rss = coro_get_sv ("Coro::POOL_RSS" , TRUE);
		1762	sv_pool_size = coro_get_sv ("Coro::POOL_SIZE" , TRUE);
		1763	av_async_pool = coro_get_av ("Coro::async_pool", TRUE);
		1764
		1765	coro_current = coro_get_sv ("Coro::current", FALSE);
		1766	SvREADONLY_on (coro_current);
		1767
1052	HV *stash = gv_stashpv ("Coro", TRUE);	1768	coro_stash = gv_stashpv ("Coro", TRUE);
1053		1769
1054	newCONSTSUB (stash, "PRIO_MAX", newSViv (PRIO_MAX));	1770	newCONSTSUB (coro_stash, "PRIO_MAX", newSViv (PRIO_MAX));
1055	newCONSTSUB (stash, "PRIO_HIGH", newSViv (PRIO_HIGH));	1771	newCONSTSUB (coro_stash, "PRIO_HIGH", newSViv (PRIO_HIGH));
1056	newCONSTSUB (stash, "PRIO_NORMAL", newSViv (PRIO_NORMAL));	1772	newCONSTSUB (coro_stash, "PRIO_NORMAL", newSViv (PRIO_NORMAL));
1057	newCONSTSUB (stash, "PRIO_LOW", newSViv (PRIO_LOW));	1773	newCONSTSUB (coro_stash, "PRIO_LOW", newSViv (PRIO_LOW));
1058	newCONSTSUB (stash, "PRIO_IDLE", newSViv (PRIO_IDLE));	1774	newCONSTSUB (coro_stash, "PRIO_IDLE", newSViv (PRIO_IDLE));
1059	newCONSTSUB (stash, "PRIO_MIN", newSViv (PRIO_MIN));	1775	newCONSTSUB (coro_stash, "PRIO_MIN", newSViv (PRIO_MIN));
1060
1061	coro_current = gv_fetchpv ("Coro::current", TRUE, SVt_PV);
1062	coro_idle = gv_fetchpv ("Coro::idle" , TRUE, SVt_PV);
1063		1776
1064	for (i = PRIO_MAX - PRIO_MIN + 1; i--; )	1777	for (i = PRIO_MAX - PRIO_MIN + 1; i--; )
1065	coro_ready[i] = newAV ();	1778	coro_ready[i] = newAV ();
1066		1779
1067	{	1780	{
1068	SV *sv = perl_get_sv("Coro::API", 1);	1781	SV *sv = perl_get_sv ("Coro::API", TRUE);
		1782	perl_get_sv ("Coro::API", TRUE); /* silence 5.10 warning */
1069		1783
1070	coroapi.schedule = api_schedule;	1784	coroapi.schedule = api_schedule;
1071	coroapi.cede = api_cede;	1785	coroapi.cede = api_cede;
		1786	coroapi.cede_notself = api_cede_notself;
1072	coroapi.ready = api_ready;	1787	coroapi.ready = api_ready;
		1788	coroapi.is_ready = api_is_ready;
1073	coroapi.nready = &coro_nready;	1789	coroapi.nready = &coro_nready;
1074	coroapi.current = coro_current;	1790	coroapi.current = coro_current;
1075		1791
1076	GCoroAPI = &coroapi;	1792	GCoroAPI = &coroapi;
1077	sv_setiv (sv, (IV)&coroapi);	1793	sv_setiv (sv, (IV)&coroapi);
1078	SvREADONLY_on (sv);	1794	SvREADONLY_on (sv);
1079	}	1795	}
1080	}	1796	}
1081		1797
1082	#if !PERL_MICRO
1083
1084	void	1798	void
1085	ready(self)	1799	_set_current (SV *current)
1086	SV * self
1087	PROTOTYPE: $	1800	PROTOTYPE: $
1088	CODE:	1801	CODE:
1089	api_ready (self);	1802	SvREFCNT_dec (SvRV (coro_current));
1090		1803	SvRV_set (coro_current, SvREFCNT_inc (SvRV (current)));
1091	#endif
1092		1804
1093	int	1805	int
		1806	prio (Coro::State coro, int newprio = 0)
		1807	ALIAS:
		1808	nice = 1
		1809	CODE:
		1810	{
		1811	RETVAL = coro->prio;
		1812
		1813	if (items > 1)
		1814	{
		1815	if (ix)
		1816	newprio = coro->prio - newprio;
		1817
		1818	if (newprio < PRIO_MIN) newprio = PRIO_MIN;
		1819	if (newprio > PRIO_MAX) newprio = PRIO_MAX;
		1820
		1821	coro->prio = newprio;
		1822	}
		1823	}
		1824	OUTPUT:
		1825	RETVAL
		1826
		1827	SV *
		1828	ready (SV *self)
		1829	PROTOTYPE: $
		1830	CODE:
		1831	RETVAL = boolSV (api_ready (self));
		1832	OUTPUT:
		1833	RETVAL
		1834
		1835	int
1094	nready(...)	1836	nready (...)
1095	PROTOTYPE:	1837	PROTOTYPE:
1096	CODE:	1838	CODE:
1097	RETVAL = coro_nready;	1839	RETVAL = coro_nready;
1098	OUTPUT:	1840	OUTPUT:
1099	RETVAL	1841	RETVAL
1100		1842
1101	void	1843	void
1102	schedule(...)	1844	throw (Coro::State self, SV *throw = &PL_sv_undef)
1103	PROTOTYPE:	1845	PROTOTYPE: $;$
		1846	CODE:
		1847	SvREFCNT_dec (self->throw);
		1848	self->throw = SvOK (throw) ? newSVsv (throw) : 0;
		1849
		1850	# for async_pool speedup
		1851	void
		1852	_pool_1 (SV *cb)
1104	CODE:	1853	CODE:
1105	api_schedule ();	1854	{
		1855	struct coro *coro = SvSTATE (coro_current);
		1856	HV hv = (HV )SvRV (coro_current);
		1857	AV *defav = GvAV (PL_defgv);
		1858	SV *invoke = hv_delete (hv, strpair ("_invoke"), 0);
		1859	AV *invoke_av;
		1860	int i, len;
		1861
		1862	if (!invoke)
		1863	croak ("\3async_pool terminate\2\n");
		1864
		1865	SvREFCNT_dec (coro->saved_deffh);
		1866	coro->saved_deffh = SvREFCNT_inc ((SV *)PL_defoutgv);
		1867
		1868	hv_store (hv, "desc", sizeof ("desc") - 1,
		1869	newSVpvn (strpair ("[async_pool]")), 0);
		1870
		1871	invoke_av = (AV *)SvRV (invoke);
		1872	len = av_len (invoke_av);
		1873
		1874	sv_setsv (cb, AvARRAY (invoke_av)[0]);
		1875
		1876	if (len > 0)
		1877	{
		1878	av_fill (defav, len - 1);
		1879	for (i = 0; i < len; ++i)
		1880	av_store (defav, i, SvREFCNT_inc (AvARRAY (invoke_av)[i + 1]));
		1881	}
		1882
		1883	SvREFCNT_dec (invoke);
		1884	}
1106		1885
1107	void	1886	void
1108	cede(...)	1887	_pool_2 (SV *cb)
1109	PROTOTYPE:
1110	CODE:	1888	CODE:
1111	api_cede ();	1889	{
		1890	struct coro *coro = SvSTATE (coro_current);
1112		1891
1113	# and these are hacks	1892	sv_setsv (cb, &PL_sv_undef);
		1893
		1894	SvREFCNT_dec ((SV )PL_defoutgv); PL_defoutgv = (GV )coro->saved_deffh;
		1895	coro->saved_deffh = 0;
		1896
		1897	if (coro_rss (aTHX_ coro) > SvIV (sv_pool_rss)
		1898	\|\| av_len (av_async_pool) + 1 >= SvIV (sv_pool_size))
		1899	croak ("\3async_pool terminate\2\n");
		1900
		1901	av_clear (GvAV (PL_defgv));
		1902	hv_store ((HV *)SvRV (coro_current), strpair ("desc"),
		1903	newSVpvn (strpair ("[async_pool idle]")), 0);
		1904
		1905	coro->prio = 0;
		1906
		1907	if (coro->cctx && (coro->cctx->flags & CC_TRACE))
		1908	api_trace (coro_current, 0);
		1909
		1910	av_push (av_async_pool, newSVsv (coro_current));
		1911	}
		1912
		1913
		1914	MODULE = Coro::State PACKAGE = Coro::AIO
		1915
1114	SV *	1916	SV *
1115	_aio_get_state ()	1917	_get_state ()
1116	CODE:	1918	CODE:
1117	{	1919	{
1118	struct {	1920	struct io_state *data;
1119	int errorno;
1120	int laststype;
1121	int laststatval;
1122	Stat_t statcache;
1123	} data;
1124		1921
		1922	RETVAL = newSV (sizeof (struct io_state));
		1923	data = (struct io_state *)SvPVX (RETVAL);
		1924	SvCUR_set (RETVAL, sizeof (struct io_state));
		1925	SvPOK_only (RETVAL);
		1926
1125	data.errorno = errno;	1927	data->errorno = errno;
1126	data.laststype = PL_laststype;	1928	data->laststype = PL_laststype;
1127	data.laststatval = PL_laststatval;	1929	data->laststatval = PL_laststatval;
1128	data.statcache = PL_statcache;	1930	data->statcache = PL_statcache;
1129
1130	RETVAL = newSVpvn ((char *)&data, sizeof data);
1131	}	1931	}
1132	OUTPUT:	1932	OUTPUT:
1133	RETVAL	1933	RETVAL
1134		1934
1135	void	1935	void
1136	_aio_set_state (char *data_)	1936	_set_state (char *data_)
1137	PROTOTYPE: $	1937	PROTOTYPE: $
1138	CODE:	1938	CODE:
1139	{	1939	{
1140	struct {	1940	struct io_state data = (void )data_;
1141	int errorno;
1142	int laststype;
1143	int laststatval;
1144	Stat_t statcache;
1145	} data = (void )data_;
1146		1941
1147	errno = data->errorno;	1942	errno = data->errorno;
1148	PL_laststype = data->laststype;	1943	PL_laststype = data->laststype;
1149	PL_laststatval = data->laststatval;	1944	PL_laststatval = data->laststatval;
1150	PL_statcache = data->statcache;	1945	PL_statcache = data->statcache;
1151	}	1946	}
		1947

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Comparing Coro/Coro/State.xs (file contents): Revision 1.86 by root, Fri Nov 24 11:36:57 2006 UTC vs. Revision 1.211 by root, Wed Oct 10 03:37:58 2007 UTC

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Comparing Coro/Coro/State.xs (file contents):
Revision 1.86 by root, Fri Nov 24 11:36:57 2006 UTC vs.
Revision 1.211 by root, Wed Oct 10 03:37:58 2007 UTC