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

Comparing Coro/Coro/State.xs (file contents):
Revision 1.97 by root, Sun Nov 26 21:21:14 2006 UTC vs.
Revision 1.198 by root, Sun Oct 7 03:58:37 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 <stdio.h>	76	/* 5.8.7 */
33	#include <errno.h>	77	#ifndef SvRV_set
		78	# define SvRV_set(s,v) SvRV(s) = (v)
		79	#endif
		80
		81	/* 5.8.8 */
		82	#ifndef GV_NOTQUAL
		83	# define GV_NOTQUAL 0
		84	#endif
		85	#ifndef newSV
		86	# define newSV(l) NEWSV(0,l)
		87	#endif
34		88
35	#if !__i386 && !__x86_64 && !__powerpc && !__m68k && !__alpha && !__mips && !__sparc64	89	#if !__i386 && !__x86_64 && !__powerpc && !__m68k && !__alpha && !__mips && !__sparc64
36	# undef STACKGUARD	90	# undef CORO_STACKGUARD
37	#endif
38
39	#ifndef STACKGUARD
40	# define STACKGUARD 0
41	#endif
42
43	#ifdef HAVE_MMAP
44	# include <unistd.h>
45	# include <sys/mman.h>
46	# ifndef MAP_ANONYMOUS
47	# ifdef MAP_ANON
48	# define MAP_ANONYMOUS MAP_ANON
49	# else
50	# undef HAVE_MMAP
51	# endif
52	# endif	91	#endif
53	# include <limits.h>	92
54	# ifndef PAGESIZE	93	#ifndef CORO_STACKGUARD
55	# define PAGESIZE pagesize	94	# define CORO_STACKGUARD 0
56	# define BOOT_PAGESIZE pagesize = sysconf (_SC_PAGESIZE)
57	static long pagesize;
58	# else
59	# define BOOT_PAGESIZE
60	# endif	95	#endif
61	#endif
62		96
63	/* The next macro should declare a variable stacklevel that contains and approximation	97	/* prefer perl internal functions over our own? */
64	* to the current C stack pointer. Its property is that it changes with each call	98	#ifndef CORO_PREFER_PERL_FUNCTIONS
65	* and should be unique. */	99	# define CORO_PREFER_PERL_FUNCTIONS 0
		100	#endif
		101
		102	/* The next macros try to return the current stack pointer, in an as
		103	* portable way as possible. */
66	#define dSTACKLEVEL int stacklevel	104	#define dSTACKLEVEL volatile char stacklevel
67	#define STACKLEVEL ((void *)&stacklevel)	105	#define STACKLEVEL ((void *)&stacklevel)
68		106
69	#define IN_DESTRUCT (PL_main_cv == Nullcv)	107	#define IN_DESTRUCT (PL_main_cv == Nullcv)
70		108
		109	#if __GNUC__ >= 3
		110	# define attribute(x) __attribute__(x)
		111	# define BARRIER __asm__ __volatile__ ("" : : : "memory")
		112	# define expect(expr,value) __builtin_expect ((expr),(value))
		113	#else
		114	# define attribute(x)
		115	# define BARRIER
		116	# define expect(expr,value) (expr)
		117	#endif
		118
		119	#define expect_false(expr) expect ((expr) != 0, 0)
		120	#define expect_true(expr) expect ((expr) != 0, 1)
		121
		122	#define NOINLINE attribute ((noinline))
		123
71	#include "CoroAPI.h"	124	#include "CoroAPI.h"
72
73	#define TRANSFER_SET_STACKLEVEL 0x8bfbfbfb /* magic cookie */
74		125
75	#ifdef USE_ITHREADS	126	#ifdef USE_ITHREADS
76	static perl_mutex coro_mutex;	127	static perl_mutex coro_mutex;
77	# define LOCK do { MUTEX_LOCK (&coro_mutex); } while (0)	128	# define LOCK do { MUTEX_LOCK (&coro_mutex); } while (0)
78	# define UNLOCK do { MUTEX_UNLOCK (&coro_mutex); } while (0)	129	# define UNLOCK do { MUTEX_UNLOCK (&coro_mutex); } while (0)
79	#else	130	#else
80	# define LOCK (void)0	131	# define LOCK (void)0
81	# define UNLOCK (void)0	132	# define UNLOCK (void)0
82	#endif	133	#endif
83		134
		135	/* helper storage struct for Coro::AIO */
		136	struct io_state
		137	{
		138	int errorno;
		139	I32 laststype;
		140	int laststatval;
		141	Stat_t statcache;
		142	};
		143
		144	static size_t coro_stacksize = CORO_STACKSIZE;
84	static struct CoroAPI coroapi;	145	static struct CoroAPI coroapi;
85	static AV main_mainstack; / used to differentiate between $main and others */	146	static AV main_mainstack; / used to differentiate between $main and others */
		147	static JMPENV *main_top_env;
86	static HV coro_state_stash, coro_stash;	148	static HV coro_state_stash, coro_stash;
87	static SV coro_mortal; / will be freed after next transfer */	149	static SV coro_mortal; / will be freed after next transfer */
88		150
		151	static GV irsgv; / $/ */
		152	static GV stdoutgv; / STDOUT /
		153
		154	/* async_pool helper stuff */
		155	static SV *sv_pool_rss;
		156	static SV *sv_pool_size;
		157	static AV *av_async_pool;
		158
		159	static struct coro_cctx *cctx_first;
		160	static int cctx_count, cctx_idle;
		161
		162	enum {
		163	CC_MAPPED = 0x01,
		164	CC_NOREUSE = 0x02, /* throw this away after tracing */
		165	CC_TRACE = 0x04,
		166	CC_TRACE_SUB = 0x08, /* trace sub calls */
		167	CC_TRACE_LINE = 0x10, /* trace each statement */
		168	CC_TRACE_ALL = CC_TRACE_SUB \| CC_TRACE_LINE,
		169	};
		170
89	/* this is a structure representing a c-level coroutine */	171	/* this is a structure representing a c-level coroutine */
90	typedef struct coro_stack {	172	typedef struct coro_cctx {
91	struct coro_stack *next;	173	struct coro_cctx *next;
92		174
93	/* the stack */	175	/* the stack */
94	void *sptr;	176	void *sptr;
95	long ssize; /* positive == mmap, otherwise malloc */	177	size_t ssize;
96		178
97	/* cpu state */	179	/* cpu state */
98	void idle_sp; / sp of top-level transfer/schedule/cede call */	180	void idle_sp; / sp of top-level transfer/schedule/cede call */
		181	JMPENV idle_te; / same as idle_sp, but for top_env, TODO: remove once stable */
99	JMPENV *top_env;	182	JMPENV *top_env;
100	coro_context cctx;	183	coro_context cctx;
101	} coro_stack;	184
		185	#if CORO_USE_VALGRIND
		186	int valgrind_id;
		187	#endif
		188	unsigned char flags;
		189	} coro_cctx;
		190
		191	enum {
		192	CF_RUNNING = 0x0001, /* coroutine is running */
		193	CF_READY = 0x0002, /* coroutine is ready */
		194	CF_NEW = 0x0004, /* has never been switched to */
		195	CF_DESTROYED = 0x0008, /* coroutine data has been freed */
		196	};
		197
		198	/* the structure where most of the perl state is stored, overlaid on the cxstack */
		199	typedef struct {
		200	SV *defsv;
		201	AV *defav;
		202	SV *errsv;
		203	SV *irsgv;
		204	#define VAR(name,type) type name;
		205	# include "state.h"
		206	#undef VAR
		207	} perl_slots;
		208
		209	#define SLOT_COUNT ((sizeof (perl_slots) + sizeof (PERL_CONTEXT) - 1) / sizeof (PERL_CONTEXT))
102		210
103	/* this is a structure representing a perl-level coroutine */	211	/* this is a structure representing a perl-level coroutine */
104	struct coro {	212	struct coro {
105	/* the c coroutine allocated to this perl coroutine, if any */	213	/* the c coroutine allocated to this perl coroutine, if any */
106	coro_stack *stack;	214	coro_cctx *cctx;
		215
		216	/* process data */
		217	AV *mainstack;
		218	perl_slots slot; / basically the saved sp */
107		219
108	/* data associated with this coroutine (initial args) */	220	/* data associated with this coroutine (initial args) */
109	AV *args;	221	AV *args;
110	int refcnt;	222	int refcnt;
		223	int flags; /* CF_ flags */
111		224
112	/* optionally saved, might be zero */	225	/* statistics */
113	AV *defav;	226	int usecount; /* number of transfers to this coro */
114	SV *defsv;
115	SV *errsv;
116
117	/* saved global state not related to stacks */
118	U8 dowarn;
119	I32 in_eval;
120
121	/* the stacks and related info (callchain etc..) */
122	PERL_SI *curstackinfo;
123	AV *curstack;
124	AV *mainstack;
125	SV **stack_sp;
126	OP *op;
127	SV **curpad;
128	AV *comppad;
129	CV *compcv;
130	SV **stack_base;
131	SV **stack_max;
132	SV **tmps_stack;
133	I32 tmps_floor;
134	I32 tmps_ix;
135	I32 tmps_max;
136	I32 *markstack;
137	I32 *markstack_ptr;
138	I32 *markstack_max;
139	I32 *scopestack;
140	I32 scopestack_ix;
141	I32 scopestack_max;
142	ANY *savestack;
143	I32 savestack_ix;
144	I32 savestack_max;
145	OP **retstack;
146	I32 retstack_ix;
147	I32 retstack_max;
148	PMOP *curpm;
149	COP *curcop;
150		227
151	/* coro process data */	228	/* coro process data */
152	int prio;	229	int prio;
		230	SV *throw;
		231
		232	/* async_pool */
		233	SV *saved_deffh;
		234
		235	/* linked list */
		236	struct coro next, prev;
		237	HV hv; / the perl hash associated with this coro, if any */
153	};	238	};
154		239
155	typedef struct coro *Coro__State;	240	typedef struct coro *Coro__State;
156	typedef struct coro *Coro__State_or_hashref;	241	typedef struct coro *Coro__State_or_hashref;
157		242
		243	/ Coro ******************************************************************/
		244
		245	#define PRIO_MAX 3
		246	#define PRIO_HIGH 1
		247	#define PRIO_NORMAL 0
		248	#define PRIO_LOW -1
		249	#define PRIO_IDLE -3
		250	#define PRIO_MIN -4
		251
		252	/* for Coro.pm */
		253	static SV *coro_current;
		254	static AV *coro_ready [PRIO_MAX-PRIO_MIN+1];
		255	static int coro_nready;
		256	static struct coro *coro_first;
		257
		258	/ lowlevel stuff ********************************************************/
		259
158	static AV *	260	static AV *
159	coro_clone_padlist (pTHX_ CV *cv)	261	coro_clone_padlist (pTHX_ CV *cv)
160	{	262	{
161	AV *padlist = CvPADLIST (cv);	263	AV *padlist = CvPADLIST (cv);
162	AV newpadlist, newpad;	264	AV newpadlist, newpad;
163		265
164	newpadlist = newAV ();	266	newpadlist = newAV ();
165	AvREAL_off (newpadlist);	267	AvREAL_off (newpadlist);
166	#if PERL_VERSION < 9	268	#if PERL_VERSION_ATLEAST (5,9,0)
		269	Perl_pad_push (aTHX_ padlist, AvFILLp (padlist) + 1);
		270	#else
167	Perl_pad_push (aTHX_ padlist, AvFILLp (padlist) + 1, 1);	271	Perl_pad_push (aTHX_ padlist, AvFILLp (padlist) + 1, 1);
168	#else
169	Perl_pad_push (aTHX_ padlist, AvFILLp (padlist) + 1);
170	#endif	272	#endif
171	newpad = (AV *)AvARRAY (padlist)[AvFILLp (padlist)];	273	newpad = (AV *)AvARRAY (padlist)[AvFILLp (padlist)];
172	--AvFILLp (padlist);	274	--AvFILLp (padlist);
173		275
174	av_store (newpadlist, 0, SvREFCNT_inc (*av_fetch (padlist, 0, FALSE)));	276	av_store (newpadlist, 0, SvREFCNT_inc (*av_fetch (padlist, 0, FALSE)));
…		…
218		320
219	#define PERL_MAGIC_coro PERL_MAGIC_ext	321	#define PERL_MAGIC_coro PERL_MAGIC_ext
220		322
221	static MGVTBL vtbl_coro = {0, 0, 0, 0, coro_cv_free};	323	static MGVTBL vtbl_coro = {0, 0, 0, 0, coro_cv_free};
222		324
		325	#define CORO_MAGIC(cv) \
		326	SvMAGIC (cv) \
		327	? SvMAGIC (cv)->mg_type == PERL_MAGIC_coro \
		328	? SvMAGIC (cv) \
		329	: mg_find ((SV *)cv, PERL_MAGIC_coro) \
		330	: 0
		331
		332	static struct coro *
		333	SvSTATE_ (pTHX_ SV *coro)
		334	{
		335	HV *stash;
		336	MAGIC *mg;
		337
		338	if (SvROK (coro))
		339	coro = SvRV (coro);
		340
		341	if (expect_false (SvTYPE (coro) != SVt_PVHV))
		342	croak ("Coro::State object required");
		343
		344	stash = SvSTASH (coro);
		345	if (expect_false (stash != coro_stash && stash != coro_state_stash))
		346	{
		347	/* very slow, but rare, check */
		348	if (!sv_derived_from (sv_2mortal (newRV_inc (coro)), "Coro::State"))
		349	croak ("Coro::State object required");
		350	}
		351
		352	mg = CORO_MAGIC (coro);
		353	return (struct coro *)mg->mg_ptr;
		354	}
		355
		356	#define SvSTATE(sv) SvSTATE_ (aTHX_ (sv))
		357
223	/* the next two functions merely cache the padlists */	358	/* the next two functions merely cache the padlists */
224	static void	359	static void
225	get_padlist (pTHX_ CV *cv)	360	get_padlist (pTHX_ CV *cv)
226	{	361	{
227	MAGIC mg = mg_find ((SV )cv, PERL_MAGIC_coro);	362	MAGIC *mg = CORO_MAGIC (cv);
		363	AV *av;
228		364
229	if (mg && AvFILLp ((AV *)mg->mg_obj) >= 0)	365	if (expect_true (mg && AvFILLp ((av = (AV *)mg->mg_obj)) >= 0))
230	CvPADLIST (cv) = (AV )av_pop ((AV )mg->mg_obj);	366	CvPADLIST (cv) = (AV *)AvARRAY (av)[AvFILLp (av)--];
231	else	367	else
232	{	368	{
233	#if 0	369	#if CORO_PREFER_PERL_FUNCTIONS
234	/* this is probably cleaner, but also slower? */	370	/* this is probably cleaner, but also slower? */
235	CV *cp = Perl_cv_clone (aTHX_ cv);	371	CV *cp = Perl_cv_clone (cv);
236	CvPADLIST (cv) = CvPADLIST (cp);	372	CvPADLIST (cv) = CvPADLIST (cp);
237	CvPADLIST (cp) = 0;	373	CvPADLIST (cp) = 0;
238	SvREFCNT_dec (cp);	374	SvREFCNT_dec (cp);
239	#else	375	#else
240	CvPADLIST (cv) = coro_clone_padlist (aTHX_ cv);	376	CvPADLIST (cv) = coro_clone_padlist (aTHX_ cv);
…		…
243	}	379	}
244		380
245	static void	381	static void
246	put_padlist (pTHX_ CV *cv)	382	put_padlist (pTHX_ CV *cv)
247	{	383	{
248	MAGIC mg = mg_find ((SV )cv, PERL_MAGIC_coro);	384	MAGIC *mg = CORO_MAGIC (cv);
		385	AV *av;
249		386
250	if (!mg)	387	if (expect_false (!mg))
251	{	388	{
252	sv_magic ((SV *)cv, 0, PERL_MAGIC_coro, 0, 0);	389	sv_magic ((SV *)cv, 0, PERL_MAGIC_coro, 0, 0);
253	mg = mg_find ((SV *)cv, PERL_MAGIC_coro);	390	mg = mg_find ((SV *)cv, PERL_MAGIC_coro);
254	mg->mg_virtual = &vtbl_coro;	391	mg->mg_virtual = &vtbl_coro;
255	mg->mg_obj = (SV *)newAV ();	392	mg->mg_obj = (SV *)newAV ();
256	}	393	}
257		394
258	av_push ((AV )mg->mg_obj, (SV )CvPADLIST (cv));	395	av = (AV *)mg->mg_obj;
259	}
260		396
261	#define SB do {	397	if (expect_false (AvFILLp (av) >= AvMAX (av)))
262	#define SE } while (0)	398	av_extend (av, AvMAX (av) + 1);
263		399
264	#define LOAD(state) load_state(aTHX_ (state));	400	AvARRAY (av)[++AvFILLp (av)] = (SV *)CvPADLIST (cv);
265	#define SAVE(state,flags) save_state(aTHX_ (state),(flags));	401	}
266		402
267	#define REPLACE_SV(sv,val) SB SvREFCNT_dec(sv); (sv) = (val); (val) = 0; SE	403	/ load & save, init *****************************************************/
268		404
269	static void	405	static void
270	load_state(pTHX_ Coro__State c)	406	load_perl (pTHX_ Coro__State c)
271	{	407	{
272	PL_dowarn = c->dowarn;	408	perl_slots *slot = c->slot;
273	PL_in_eval = c->in_eval;	409	c->slot = 0;
274		410
275	PL_curstackinfo = c->curstackinfo;
276	PL_curstack = c->curstack;
277	PL_mainstack = c->mainstack;	411	PL_mainstack = c->mainstack;
278	PL_stack_sp = c->stack_sp;
279	PL_op = c->op;
280	PL_curpad = c->curpad;
281	PL_comppad = c->comppad;
282	PL_compcv = c->compcv;
283	PL_stack_base = c->stack_base;
284	PL_stack_max = c->stack_max;
285	PL_tmps_stack = c->tmps_stack;
286	PL_tmps_floor = c->tmps_floor;
287	PL_tmps_ix = c->tmps_ix;
288	PL_tmps_max = c->tmps_max;
289	PL_markstack = c->markstack;
290	PL_markstack_ptr = c->markstack_ptr;
291	PL_markstack_max = c->markstack_max;
292	PL_scopestack = c->scopestack;
293	PL_scopestack_ix = c->scopestack_ix;
294	PL_scopestack_max = c->scopestack_max;
295	PL_savestack = c->savestack;
296	PL_savestack_ix = c->savestack_ix;
297	PL_savestack_max = c->savestack_max;
298	#if PERL_VERSION < 9
299	PL_retstack = c->retstack;
300	PL_retstack_ix = c->retstack_ix;
301	PL_retstack_max = c->retstack_max;
302	#endif
303	PL_curpm = c->curpm;
304	PL_curcop = c->curcop;
305		412
306	if (c->defav) REPLACE_SV (GvAV (PL_defgv), c->defav);	413	GvSV (PL_defgv) = slot->defsv;
307	if (c->defsv) REPLACE_SV (DEFSV , c->defsv);	414	GvAV (PL_defgv) = slot->defav;
308	if (c->errsv) REPLACE_SV (ERRSV , c->errsv);	415	GvSV (PL_errgv) = slot->errsv;
		416	GvSV (irsgv) = slot->irsgv;
		417
		418	#define VAR(name,type) PL_ ## name = slot->name;
		419	# include "state.h"
		420	#undef VAR
309		421
310	{	422	{
311	dSP;	423	dSP;
		424
312	CV *cv;	425	CV *cv;
313		426
314	/* now do the ugly restore mess */	427	/* now do the ugly restore mess */
315	while ((cv = (CV *)POPs))	428	while (expect_true (cv = (CV *)POPs))
316	{	429	{
317	AV padlist = (AV )POPs;
318
319	if (padlist)
320	{
321	put_padlist (aTHX_ cv); /* mark this padlist as available */	430	put_padlist (aTHX_ cv); /* mark this padlist as available */
322	CvPADLIST(cv) = padlist;	431	CvDEPTH (cv) = PTR2IV (POPs);
323	}	432	CvPADLIST (cv) = (AV *)POPs;
324
325	++CvDEPTH(cv);
326	}	433	}
327		434
328	PUTBACK;	435	PUTBACK;
329	}	436	}
330	}	437	}
331		438
332	static void	439	static void
333	save_state(pTHX_ Coro__State c, int flags)	440	save_perl (pTHX_ Coro__State c)
334	{	441	{
335	{	442	{
336	dSP;	443	dSP;
337	I32 cxix = cxstack_ix;	444	I32 cxix = cxstack_ix;
338	PERL_CONTEXT *ccstk = cxstack;	445	PERL_CONTEXT *ccstk = cxstack;
…		…
341	/*	448	/*
342	* the worst thing you can imagine happens first - we have to save	449	* the worst thing you can imagine happens first - we have to save
343	* (and reinitialize) all cv's in the whole callchain :(	450	* (and reinitialize) all cv's in the whole callchain :(
344	*/	451	*/
345		452
346	PUSHs (Nullsv);	453	XPUSHs (Nullsv);
347	/* this loop was inspired by pp_caller */	454	/* this loop was inspired by pp_caller */
348	for (;;)	455	for (;;)
349	{	456	{
350	while (cxix >= 0)	457	while (expect_true (cxix >= 0))
351	{	458	{
352	PERL_CONTEXT *cx = &ccstk[cxix--];	459	PERL_CONTEXT *cx = &ccstk[cxix--];
353		460
354	if (CxTYPE(cx) == CXt_SUB)	461	if (expect_true (CxTYPE (cx) == CXt_SUB \|\| CxTYPE (cx) == CXt_FORMAT))
355	{	462	{
356	CV *cv = cx->blk_sub.cv;	463	CV *cv = cx->blk_sub.cv;
		464
357	if (CvDEPTH(cv))	465	if (expect_true (CvDEPTH (cv)))
358	{	466	{
359	EXTEND (SP, CvDEPTH(cv)*2);	467	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));	468	PUSHs ((SV *)CvPADLIST (cv));
		469	PUSHs (INT2PTR (SV *, CvDEPTH (cv)));
369	PUSHs ((SV *)cv);	470	PUSHs ((SV *)cv);
370		471
		472	CvDEPTH (cv) = 0;
371	get_padlist (aTHX_ cv);	473	get_padlist (aTHX_ cv);
372	}	474	}
373	}	475	}
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	}	476	}
383		477
384	if (top_si->si_type == PERLSI_MAIN)	478	if (expect_true (top_si->si_type == PERLSI_MAIN))
385	break;	479	break;
386		480
387	top_si = top_si->si_prev;	481	top_si = top_si->si_prev;
388	ccstk = top_si->si_cxstack;	482	ccstk = top_si->si_cxstack;
389	cxix = top_si->si_cxix;	483	cxix = top_si->si_cxix;
390	}	484	}
391		485
392	PUTBACK;	486	PUTBACK;
393	}	487	}
394		488
395	c->defav = flags & TRANSFER_SAVE_DEFAV ? (AV *)SvREFCNT_inc (GvAV (PL_defgv)) : 0;	489	/* allocate some space on the context stack for our purposes */
396	c->defsv = flags & TRANSFER_SAVE_DEFSV ? SvREFCNT_inc (DEFSV) : 0;	490	{
397	c->errsv = flags & TRANSFER_SAVE_ERRSV ? SvREFCNT_inc (ERRSV) : 0;	491	/* we manually unroll here, as usually 2 slots is enough */
		492	int i;
		493	if (SLOT_COUNT >= 1) CXINC;
		494	if (SLOT_COUNT >= 2) CXINC;
		495	if (SLOT_COUNT >= 3) CXINC;
		496	for (i = 3; i < SLOT_COUNT; ++i)
		497	CXINC;
398		498
399	c->dowarn = PL_dowarn;	499	cxstack_ix -= SLOT_COUNT; /* undo allocation */
400	c->in_eval = PL_in_eval;	500	}
401		501
402	c->curstackinfo = PL_curstackinfo;
403	c->curstack = PL_curstack;
404	c->mainstack = PL_mainstack;	502	c->mainstack = PL_mainstack;
405	c->stack_sp = PL_stack_sp;	503
406	c->op = PL_op;	504	{
407	c->curpad = PL_curpad;	505	perl_slots slot = c->slot = (perl_slots )(cxstack + cxstack_ix + 1);
408	c->comppad = PL_comppad;	506
409	c->compcv = PL_compcv;	507	slot->defav = GvAV (PL_defgv);
410	c->stack_base = PL_stack_base;	508	slot->defsv = DEFSV;
411	c->stack_max = PL_stack_max;	509	slot->errsv = ERRSV;
412	c->tmps_stack = PL_tmps_stack;	510	slot->irsgv = GvSV (irsgv);
413	c->tmps_floor = PL_tmps_floor;	511
414	c->tmps_ix = PL_tmps_ix;	512	#define VAR(name,type) slot->name = PL_ ## name;
415	c->tmps_max = PL_tmps_max;	513	# include "state.h"
416	c->markstack = PL_markstack;	514	#undef VAR
417	c->markstack_ptr = PL_markstack_ptr;	515	}
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	}	516	}
433		517
434	/*	518	/*
435	* allocate various perl stacks. This is an exact copy	519	* allocate various perl stacks. This is an exact copy
436	* of perl.c:init_stacks, except that it uses less memory	520	* of perl.c:init_stacks, except that it uses less memory
437	* on the (sometimes correct) assumption that coroutines do	521	* on the (sometimes correct) assumption that coroutines do
438	* not usually need a lot of stackspace.	522	* not usually need a lot of stackspace.
439	*/	523	*/
		524	#if CORO_PREFER_PERL_FUNCTIONS
		525	# define coro_init_stacks init_stacks
		526	#else
440	static void	527	static void
441	coro_init_stacks (pTHX)	528	coro_init_stacks (pTHX)
442	{	529	{
443	LOCK;	530	PL_curstackinfo = new_stackinfo(32, 8);
444
445	PL_curstackinfo = new_stackinfo(96, 1024/sizeof(PERL_CONTEXT) - 1);
446	PL_curstackinfo->si_type = PERLSI_MAIN;	531	PL_curstackinfo->si_type = PERLSI_MAIN;
447	PL_curstack = PL_curstackinfo->si_stack;	532	PL_curstack = PL_curstackinfo->si_stack;
448	PL_mainstack = PL_curstack; /* remember in case we switch stacks */	533	PL_mainstack = PL_curstack; /* remember in case we switch stacks */
449		534
450	PL_stack_base = AvARRAY(PL_curstack);	535	PL_stack_base = AvARRAY(PL_curstack);
451	PL_stack_sp = PL_stack_base;	536	PL_stack_sp = PL_stack_base;
452	PL_stack_max = PL_stack_base + AvMAX(PL_curstack);	537	PL_stack_max = PL_stack_base + AvMAX(PL_curstack);
453		538
454	New(50,PL_tmps_stack,96,SV*);	539	New(50,PL_tmps_stack,32,SV*);
455	PL_tmps_floor = -1;	540	PL_tmps_floor = -1;
456	PL_tmps_ix = -1;	541	PL_tmps_ix = -1;
457	PL_tmps_max = 96;	542	PL_tmps_max = 32;
458		543
459	New(54,PL_markstack,16,I32);	544	New(54,PL_markstack,16,I32);
460	PL_markstack_ptr = PL_markstack;	545	PL_markstack_ptr = PL_markstack;
461	PL_markstack_max = PL_markstack + 16;	546	PL_markstack_max = PL_markstack + 16;
462		547
463	#ifdef SET_MARK_OFFSET	548	#ifdef SET_MARK_OFFSET
464	SET_MARK_OFFSET;	549	SET_MARK_OFFSET;
465	#endif	550	#endif
466		551
467	New(54,PL_scopestack,16,I32);	552	New(54,PL_scopestack,8,I32);
468	PL_scopestack_ix = 0;	553	PL_scopestack_ix = 0;
469	PL_scopestack_max = 16;	554	PL_scopestack_max = 8;
470		555
471	New(54,PL_savestack,96,ANY);	556	New(54,PL_savestack,24,ANY);
472	PL_savestack_ix = 0;	557	PL_savestack_ix = 0;
473	PL_savestack_max = 96;	558	PL_savestack_max = 24;
474		559
475	#if PERL_VERSION < 9	560	#if !PERL_VERSION_ATLEAST (5,9,0)
476	New(54,PL_retstack,8,OP*);	561	New(54,PL_retstack,4,OP*);
477	PL_retstack_ix = 0;	562	PL_retstack_ix = 0;
478	PL_retstack_max = 8;	563	PL_retstack_max = 4;
479	#endif	564	#endif
480
481	UNLOCK;
482	}	565	}
		566	#endif
483		567
484	/*	568	/*
485	* destroy the stacks, the callchain etc...	569	* destroy the stacks, the callchain etc...
486	*/	570	*/
487	static void	571	static void
488	destroy_stacks(pTHX)	572	coro_destroy_stacks (pTHX)
489	{	573	{
490	if (!IN_DESTRUCT)
491	{
492	/* is this ugly, I ask? */
493	LEAVE_SCOPE (0);
494
495	/* sure it is, but more important: is it correct?? :/ */
496	FREETMPS;
497
498	/POPSTACK_TO (PL_mainstack);//D//use/
499	}
500
501	while (PL_curstackinfo->si_next)	574	while (PL_curstackinfo->si_next)
502	PL_curstackinfo = PL_curstackinfo->si_next;	575	PL_curstackinfo = PL_curstackinfo->si_next;
503		576
504	while (PL_curstackinfo)	577	while (PL_curstackinfo)
505	{	578	{
506	PERL_SI *p = PL_curstackinfo->si_prev;	579	PERL_SI *p = PL_curstackinfo->si_prev;
507		580
508	{ /D//remove/
509	dSP;
510	SWITCHSTACK (PL_curstack, PL_curstackinfo->si_stack);
511	PUTBACK; /* possibly superfluous */
512	}
513
514	if (!IN_DESTRUCT)	581	if (!IN_DESTRUCT)
515	{
516	dounwind (-1);/D//remove/
517	SvREFCNT_dec (PL_curstackinfo->si_stack);	582	SvREFCNT_dec (PL_curstackinfo->si_stack);
518	}
519		583
520	Safefree (PL_curstackinfo->si_cxstack);	584	Safefree (PL_curstackinfo->si_cxstack);
521	Safefree (PL_curstackinfo);	585	Safefree (PL_curstackinfo);
522	PL_curstackinfo = p;	586	PL_curstackinfo = p;
523	}	587	}
524		588
525	Safefree (PL_tmps_stack);	589	Safefree (PL_tmps_stack);
526	Safefree (PL_markstack);	590	Safefree (PL_markstack);
527	Safefree (PL_scopestack);	591	Safefree (PL_scopestack);
528	Safefree (PL_savestack);	592	Safefree (PL_savestack);
529	#if PERL_VERSION < 9	593	#if !PERL_VERSION_ATLEAST (5,9,0)
530	Safefree (PL_retstack);	594	Safefree (PL_retstack);
531	#endif	595	#endif
532	}	596	}
533		597
534	static void	598	static size_t
535	setup_coro (struct coro *coro)	599	coro_rss (pTHX_ struct coro *coro)
		600	{
		601	size_t rss = sizeof (*coro);
		602
		603	if (coro->mainstack)
		604	{
		605	perl_slots tmp_slot;
		606	perl_slots *slot;
		607
		608	if (coro->flags & CF_RUNNING)
		609	{
		610	slot = &tmp_slot;
		611
		612	#define VAR(name,type) slot->name = PL_ ## name;
		613	# include "state.h"
		614	#undef VAR
		615	}
		616	else
		617	slot = coro->slot;
		618
		619	rss += sizeof (slot->curstackinfo);
		620	rss += (slot->curstackinfo->si_cxmax + 1) * sizeof (PERL_CONTEXT);
		621	rss += sizeof (SV) + sizeof (struct xpvav) + (1 + AvMAX (slot->curstack)) * sizeof (SV *);
		622	rss += slot->tmps_max * sizeof (SV *);
		623	rss += (slot->markstack_max - slot->markstack_ptr) * sizeof (I32);
		624	rss += slot->scopestack_max * sizeof (I32);
		625	rss += slot->savestack_max * sizeof (ANY);
		626
		627	#if !PERL_VERSION_ATLEAST (5,9,0)
		628	rss += slot->retstack_max * sizeof (OP *);
		629	#endif
		630	}
		631
		632	return rss;
		633	}
		634
		635	/ coroutine stack handling **********************************************/
		636
		637	static void
		638	coro_setup (pTHX_ struct coro *coro)
536	{	639	{
537	/*	640	/*
538	* emulate part of the perl startup here.	641	* emulate part of the perl startup here.
539	*/	642	*/
540	dTHX;	643	coro_init_stacks (aTHX);
		644
		645	PL_runops = RUNOPS_DEFAULT;
		646	PL_curcop = &PL_compiling;
		647	PL_in_eval = EVAL_NULL;
		648	PL_comppad = 0;
		649	PL_curpm = 0;
		650	PL_curpad = 0;
		651	PL_localizing = 0;
		652	PL_dirty = 0;
		653	PL_restartop = 0;
		654	PL_diehook = 0;
		655	PL_warnhook = 0;
		656
		657	GvSV (PL_defgv) = newSV (0);
		658	GvAV (PL_defgv) = coro->args; coro->args = 0;
		659	GvSV (PL_errgv) = newSV (0);
		660	GvSV (irsgv) = newSVpvn ("\n", 1); sv_magic (GvSV (irsgv), (SV *)irsgv, PERL_MAGIC_sv, "/", 0);
		661	PL_rs = newSVsv (GvSV (irsgv));
		662	PL_defoutgv = (GV *)SvREFCNT_inc (stdoutgv);
		663
		664	{
		665	dSP;
		666	LOGOP myop;
		667
		668	Zero (&myop, 1, LOGOP);
		669	myop.op_next = Nullop;
		670	myop.op_flags = OPf_WANT_VOID;
		671
		672	PUSHMARK (SP);
		673	XPUSHs (sv_2mortal (av_shift (GvAV (PL_defgv))));
		674	PUTBACK;
		675	PL_op = (OP *)&myop;
		676	PL_op = PL_ppaddr[OP_ENTERSUB](aTHX);
		677	SPAGAIN;
		678	}
		679
		680	ENTER; /* necessary e.g. for dounwind and to balance the xsub-entersub */
		681	}
		682
		683	static void
		684	coro_destroy (pTHX_ struct coro *coro)
		685	{
		686	if (!IN_DESTRUCT)
		687	{
		688	/* restore all saved variables and stuff */
		689	LEAVE_SCOPE (0);
		690	assert (PL_tmps_floor == -1);
		691
		692	/* free all temporaries */
		693	FREETMPS;
		694	assert (PL_tmps_ix == -1);
		695
		696	/* unwind all extra stacks */
		697	POPSTACK_TO (PL_mainstack);
		698
		699	/* unwind main stack */
		700	dounwind (-1);
		701	}
		702
		703	SvREFCNT_dec (GvSV (PL_defgv));
		704	SvREFCNT_dec (GvAV (PL_defgv));
		705	SvREFCNT_dec (GvSV (PL_errgv));
		706	SvREFCNT_dec (PL_defoutgv);
		707	SvREFCNT_dec (PL_rs);
		708	SvREFCNT_dec (GvSV (irsgv));
		709
		710	SvREFCNT_dec (PL_diehook);
		711	SvREFCNT_dec (PL_warnhook);
		712
		713	SvREFCNT_dec (coro->saved_deffh);
		714	SvREFCNT_dec (coro->throw);
		715
		716	coro_destroy_stacks (aTHX);
		717	}
		718
		719	static void
		720	free_coro_mortal (pTHX)
		721	{
		722	if (expect_true (coro_mortal))
		723	{
		724	SvREFCNT_dec (coro_mortal);
		725	coro_mortal = 0;
		726	}
		727	}
		728
		729	static int
		730	runops_trace (pTHX)
		731	{
		732	COP *oldcop = 0;
		733	int oldcxix = -2;
		734	struct coro coro = SvSTATE (coro_current); / trace cctx is tied to specific coro */
		735	coro_cctx *cctx = coro->cctx;
		736
		737	while ((PL_op = CALL_FPTR (PL_op->op_ppaddr) (aTHX)))
		738	{
		739	PERL_ASYNC_CHECK ();
		740
		741	if (cctx->flags & CC_TRACE_ALL)
		742	{
		743	if (PL_op->op_type == OP_LEAVESUB && cctx->flags & CC_TRACE_SUB)
		744	{
		745	PERL_CONTEXT *cx = &cxstack[cxstack_ix];
		746	SV bot, top;
		747	AV av = newAV (); / return values */
		748	SV **cb;
		749	dSP;
		750
		751	GV *gv = CvGV (cx->blk_sub.cv);
		752	SV *fullname = sv_2mortal (newSV (0));
		753	if (isGV (gv))
		754	gv_efullname3 (fullname, gv, 0);
		755
		756	bot = PL_stack_base + cx->blk_oldsp + 1;
		757	top = cx->blk_gimme == G_ARRAY ? SP + 1
		758	: cx->blk_gimme == G_SCALAR ? bot + 1
		759	: bot;
		760
		761	av_extend (av, top - bot);
		762	while (bot < top)
		763	av_push (av, SvREFCNT_inc (*bot++));
		764
		765	PL_runops = RUNOPS_DEFAULT;
		766	ENTER;
		767	SAVETMPS;
		768	EXTEND (SP, 3);
		769	PUSHMARK (SP);
		770	PUSHs (&PL_sv_no);
		771	PUSHs (fullname);
		772	PUSHs (sv_2mortal (newRV_noinc ((SV *)av)));
		773	PUTBACK;
		774	cb = hv_fetch ((HV *)SvRV (coro_current), "_trace_sub_cb", sizeof ("_trace_sub_cb") - 1, 0);
		775	if (cb) call_sv (*cb, G_KEEPERR \| G_EVAL \| G_VOID \| G_DISCARD);
		776	SPAGAIN;
		777	FREETMPS;
		778	LEAVE;
		779	PL_runops = runops_trace;
		780	}
		781
		782	if (oldcop != PL_curcop)
		783	{
		784	oldcop = PL_curcop;
		785
		786	if (PL_curcop != &PL_compiling)
		787	{
		788	SV **cb;
		789
		790	if (oldcxix != cxstack_ix && cctx->flags & CC_TRACE_SUB)
		791	{
		792	PERL_CONTEXT *cx = &cxstack[cxstack_ix];
		793
		794	if (CxTYPE (cx) == CXt_SUB && oldcxix < cxstack_ix)
		795	{
		796	runops_proc_t old_runops = PL_runops;
		797	dSP;
		798	GV *gv = CvGV (cx->blk_sub.cv);
		799	SV *fullname = sv_2mortal (newSV (0));
		800
		801	if (isGV (gv))
		802	gv_efullname3 (fullname, gv, 0);
		803
		804	PL_runops = RUNOPS_DEFAULT;
		805	ENTER;
		806	SAVETMPS;
		807	EXTEND (SP, 3);
		808	PUSHMARK (SP);
		809	PUSHs (&PL_sv_yes);
		810	PUSHs (fullname);
		811	PUSHs (cx->blk_sub.hasargs ? sv_2mortal (newRV_inc ((SV *)cx->blk_sub.argarray)) : &PL_sv_undef);
		812	PUTBACK;
		813	cb = hv_fetch ((HV *)SvRV (coro_current), "_trace_sub_cb", sizeof ("_trace_sub_cb") - 1, 0);
		814	if (cb) call_sv (*cb, G_KEEPERR \| G_EVAL \| G_VOID \| G_DISCARD);
		815	SPAGAIN;
		816	FREETMPS;
		817	LEAVE;
		818	PL_runops = runops_trace;
		819	}
		820
		821	oldcxix = cxstack_ix;
		822	}
		823
		824	if (cctx->flags & CC_TRACE_LINE)
		825	{
		826	dSP;
		827
		828	PL_runops = RUNOPS_DEFAULT;
		829	ENTER;
		830	SAVETMPS;
		831	EXTEND (SP, 3);
		832	PL_runops = RUNOPS_DEFAULT;
		833	PUSHMARK (SP);
		834	PUSHs (sv_2mortal (newSVpv (OutCopFILE (oldcop), 0)));
		835	PUSHs (sv_2mortal (newSViv (CopLINE (oldcop))));
		836	PUTBACK;
		837	cb = hv_fetch ((HV *)SvRV (coro_current), "_trace_line_cb", sizeof ("_trace_line_cb") - 1, 0);
		838	if (cb) call_sv (*cb, G_KEEPERR \| G_EVAL \| G_VOID \| G_DISCARD);
		839	SPAGAIN;
		840	FREETMPS;
		841	LEAVE;
		842	PL_runops = runops_trace;
		843	}
		844	}
		845	}
		846	}
		847	}
		848
		849	TAINT_NOT;
		850	return 0;
		851	}
		852
		853	/* inject a fake call to Coro::State::_cctx_init into the execution */
		854	/* _cctx_init should be careful, as it could be called at almost any time */
		855	/* during execution of a perl program */
		856	static void NOINLINE
		857	prepare_cctx (pTHX_ coro_cctx *cctx)
		858	{
541	dSP;	859	dSP;
542	UNOP myop;	860	LOGOP myop;
543	SV sub_init = (SV )get_cv ("Coro::State::coro_init", FALSE);
544		861
545	coro_init_stacks (aTHX);	862	PL_top_env = &PL_start_env;
546	/PL_curcop = 0;/
547	/PL_in_eval = PL_in_eval;/ /* inherit */
548	SvREFCNT_dec (GvAV (PL_defgv));
549	GvAV (PL_defgv) = coro->args; coro->args = 0;
550		863
551	SPAGAIN;	864	if (cctx->flags & CC_TRACE)
		865	PL_runops = runops_trace;
552		866
553	Zero (&myop, 1, UNOP);	867	Zero (&myop, 1, LOGOP);
554	myop.op_next = Nullop;	868	myop.op_next = PL_op;
555	myop.op_flags = OPf_WANT_VOID;	869	myop.op_flags = OPf_WANT_VOID \| OPf_STACKED;
556		870
		871	PUSHMARK (SP);
		872	EXTEND (SP, 2);
		873	PUSHs (sv_2mortal (newSViv (PTR2IV (cctx))));
		874	PUSHs ((SV *)get_cv ("Coro::State::_cctx_init", FALSE));
		875	PUTBACK;
557	PL_op = (OP *)&myop;	876	PL_op = (OP *)&myop;
558
559	PUSHMARK(SP);
560	XPUSHs (sub_init);
561	PUTBACK;
562	PL_op = PL_ppaddr[OP_ENTERSUB](aTHX);	877	PL_op = PL_ppaddr[OP_ENTERSUB](aTHX);
563	SPAGAIN;	878	SPAGAIN;
564
565	ENTER; /* necessary e.g. for dounwind */
566	}	879	}
567		880
568	static void	881	/*
569	free_coro_mortal ()	882	* this is a _very_ stripped down perl interpreter ;)
570	{	883	*/
571	if (coro_mortal)
572	{
573	dTHX;
574
575	SvREFCNT_dec (coro_mortal);
576	coro_mortal = 0;
577	}
578	}
579
580	static void	884	static void
581	coro_run (void *arg)	885	coro_run (void *arg)
582	{	886	{
		887	dTHX;
		888
		889	/* coro_run is the alternative tail of transfer(), so unlock here. */
		890	UNLOCK;
		891
		892	/* we now skip the entersub that lead to transfer() */
		893	PL_op = PL_op->op_next;
		894
		895	/* inject a fake subroutine call to cctx_init */
		896	prepare_cctx (aTHX_ (coro_cctx *)arg);
		897
		898	/* somebody or something will hit me for both perl_run and PL_restartop */
		899	PL_restartop = PL_op;
		900	perl_run (PL_curinterp);
		901
583	/*	902	/*
584	* this is a _very_ stripped down perl interpreter ;)	903	* If perl-run returns we assume exit() was being called or the coro
		904	* fell off the end, which seems to be the only valid (non-bug)
		905	* reason for perl_run to return. We try to exit by jumping to the
		906	* bootstrap-time "top" top_env, as we cannot restore the "main"
		907	* coroutine as Coro has no such concept
585	*/	908	*/
586	dTHX;
587	int ret;
588
589	UNLOCK;
590
591	PL_top_env = &PL_start_env;	909	PL_top_env = main_top_env;
592		910	JMPENV_JUMP (2); /* I do not feel well about the hardcoded 2 at all */
593	sv_setiv (get_sv ("Coro::State::cctx_stack", FALSE), PTR2IV ((coro_stack *)arg));
594	sv_setiv (get_sv ("Coro::State::cctx_restartop", FALSE), PTR2IV (PL_op));
595
596	/* continue at cctx_init, without entersub */
597	PL_restartop = CvSTART (get_cv ("Coro::State::cctx_init", FALSE));
598
599	/* somebody will hit me for both perl_run and PL_restartop */
600	ret = perl_run (aTHX_ PERL_GET_CONTEXT);
601	printf ("ret %d\n", ret);//D
602
603	fputs ("FATAL: C coroutine fell over the edge of the world, aborting.\n", stderr);
604	abort ();
605	}	911	}
606		912
607	static coro_stack *	913	static coro_cctx *
608	stack_new ()	914	cctx_new ()
609	{	915	{
610	coro_stack *stack;	916	coro_cctx *cctx;
		917	void *stack_start;
		918	size_t stack_size;
611		919
		920	++cctx_count;
		921
612	New (0, stack, 1, coro_stack);	922	Newz (0, cctx, 1, coro_cctx);
613		923
614	#if HAVE_MMAP	924	#if HAVE_MMAP
615		925
616	stack->ssize = ((STACKSIZE * sizeof (long) + PAGESIZE - 1) / PAGESIZE + STACKGUARD) * PAGESIZE;	926	cctx->ssize = ((coro_stacksize * sizeof (long) + PAGESIZE - 1) / PAGESIZE + CORO_STACKGUARD) * PAGESIZE;
617	/* mmap suppsedly does allocate-on-write for us */	927	/* mmap supposedly does allocate-on-write for us */
618	stack->sptr = mmap (0, stack->ssize, PROT_EXEC\|PROT_READ\|PROT_WRITE, MAP_PRIVATE\|MAP_ANONYMOUS, 0, 0);	928	cctx->sptr = mmap (0, cctx->ssize, PROT_EXEC\|PROT_READ\|PROT_WRITE, MAP_PRIVATE\|MAP_ANONYMOUS, 0, 0);
619		929
620	if (stack->sptr == (void *)-1)	930	if (cctx->sptr != (void *)-1)
621	{
622	perror ("FATAL: unable to mmap stack for coroutine");
623	_exit (EXIT_FAILURE);
624	}	931	{
625
626	# if STACKGUARD	932	# if CORO_STACKGUARD
627	mprotect (stack->sptr, STACKGUARD * PAGESIZE, PROT_NONE);	933	mprotect (cctx->sptr, CORO_STACKGUARD * PAGESIZE, PROT_NONE);
628	# endif	934	# endif
		935	stack_start = CORO_STACKGUARD * PAGESIZE + (char *)cctx->sptr;
		936	stack_size = cctx->ssize - CORO_STACKGUARD * PAGESIZE;
		937	cctx->flags \|= CC_MAPPED;
		938	}
		939	else
		940	#endif
		941	{
		942	cctx->ssize = coro_stacksize * (long)sizeof (long);
		943	New (0, cctx->sptr, coro_stacksize, long);
629		944
		945	if (!cctx->sptr)
		946	{
		947	perror ("FATAL: unable to allocate stack for coroutine");
		948	_exit (EXIT_FAILURE);
		949	}
		950
		951	stack_start = cctx->sptr;
		952	stack_size = cctx->ssize;
		953	}
		954
		955	REGISTER_STACK (cctx, (char )stack_start, (char )stack_start + stack_size);
		956	coro_create (&cctx->cctx, coro_run, (void *)cctx, stack_start, stack_size);
		957
		958	return cctx;
		959	}
		960
		961	static void
		962	cctx_destroy (coro_cctx *cctx)
		963	{
		964	if (!cctx)
		965	return;
		966
		967	--cctx_count;
		968
		969	#if CORO_USE_VALGRIND
		970	VALGRIND_STACK_DEREGISTER (cctx->valgrind_id);
		971	#endif
		972
		973	#if HAVE_MMAP
		974	if (cctx->flags & CC_MAPPED)
		975	munmap (cctx->sptr, cctx->ssize);
		976	else
		977	#endif
		978	Safefree (cctx->sptr);
		979
		980	Safefree (cctx);
		981	}
		982
		983	/* wether this cctx should be destructed */
		984	#define CCTX_EXPIRED(cctx) ((cctx)->ssize < coro_stacksize \|\| ((cctx)->flags & CC_NOREUSE))
		985
		986	static coro_cctx *
		987	cctx_get (pTHX)
		988	{
		989	while (expect_true (cctx_first))
		990	{
		991	coro_cctx *cctx = cctx_first;
		992	cctx_first = cctx->next;
		993	--cctx_idle;
		994
		995	if (expect_true (!CCTX_EXPIRED (cctx)))
		996	return cctx;
		997
		998	cctx_destroy (cctx);
		999	}
		1000
		1001	return cctx_new ();
		1002	}
		1003
		1004	static void
		1005	cctx_put (coro_cctx *cctx)
		1006	{
		1007	/* free another cctx if overlimit */
		1008	if (expect_false (cctx_idle >= MAX_IDLE_CCTX))
		1009	{
		1010	coro_cctx *first = cctx_first;
		1011	cctx_first = first->next;
		1012	--cctx_idle;
		1013
		1014	cctx_destroy (first);
		1015	}
		1016
		1017	++cctx_idle;
		1018	cctx->next = cctx_first;
		1019	cctx_first = cctx;
		1020	}
		1021
		1022	/ coroutine switching ***************************************************/
		1023
		1024	static void
		1025	transfer_check (pTHX_ struct coro prev, struct coro next)
		1026	{
		1027	if (expect_true (prev != next))
		1028	{
		1029	if (expect_false (!(prev->flags & (CF_RUNNING \| CF_NEW))))
		1030	croak ("Coro::State::transfer called with non-running/new prev Coro::State, but can only transfer from running or new states");
		1031
		1032	if (expect_false (next->flags & CF_RUNNING))
		1033	croak ("Coro::State::transfer called with running next Coro::State, but can only transfer to inactive states");
		1034
		1035	if (expect_false (next->flags & CF_DESTROYED))
		1036	croak ("Coro::State::transfer called with destroyed next Coro::State, but can only transfer to inactive states");
		1037
		1038	if (
		1039	#if PERL_VERSION_ATLEAST (5,9,0)
		1040	expect_false (PL_parser)
630	#else	1041	#else
631		1042	expect_false (PL_lex_state != LEX_NOTPARSING)
632	stack->ssize = STACKSIZE * (long)sizeof (long);
633	New (0, stack->sptr, STACKSIZE, long);
634
635	if (!stack->sptr)
636	{
637	perror (stderr, "FATAL: unable to malloc stack for coroutine");
638	_exit (EXIT_FAILURE);
639	}
640
641	#endif	1043	#endif
642		1044	)
643	coro_create (&stack->cctx, coro_run, (void *)stack, stack->sptr, stack->ssize);	1045	croak ("Coro::State::transfer called while parsing, but this is not supported");
644
645	return stack;
646	}
647
648	static void
649	stack_free (coro_stack *stack)
650	{
651	if (!stack)
652	return;
653
654	#if HAVE_MMAP
655	munmap (stack->sptr, stack->ssize);
656	#else
657	Safefree (stack->sptr);
658	#endif
659
660	Safefree (stack);
661	}
662
663	static coro_stack *stack_first;
664
665	static coro_stack *
666	stack_get ()
667	{
668	coro_stack *stack;
669
670	if (stack_first)
671	{
672	stack = stack_first;
673	stack_first = stack->next;
674	}
675	else
676	{
677	stack = stack_new ();
678	PL_op = PL_op->op_next;
679	}	1046	}
680
681	return stack;
682	}	1047	}
683		1048
684	static void	1049	/* always use the TRANSFER macro */
685	stack_put (coro_stack *stack)	1050	static void NOINLINE
686	{
687	stack->next = stack_first;
688	stack_first = stack;
689	}
690
691	/* never call directly, always through the coro_state_transfer global variable */
692	static void
693	transfer_impl (pTHX_ struct coro prev, struct coro next, int flags)	1051	transfer (pTHX_ struct coro prev, struct coro next)
694	{	1052	{
695	dSTACKLEVEL;	1053	dSTACKLEVEL;
696		1054
697	/* sometimes transfer is only called to set idle_sp */	1055	/* sometimes transfer is only called to set idle_sp */
698	if (flags == TRANSFER_SET_STACKLEVEL)	1056	if (expect_false (!next))
		1057	{
699	((coro_stack *)prev)->idle_sp = STACKLEVEL;	1058	((coro_cctx *)prev)->idle_sp = STACKLEVEL;
700	else if (prev != next)	1059	assert (((coro_cctx )prev)->idle_te = PL_top_env); / just for the side-effect when asserts are enabled */
701	{	1060	}
		1061	else if (expect_true (prev != next))
		1062	{
702	coro_stack *prev__stack;	1063	coro_cctx *prev__cctx;
		1064
		1065	if (expect_false (prev->flags & CF_NEW))
		1066	{
		1067	/* create a new empty context */
		1068	Newz (0, prev->cctx, 1, coro_cctx);
		1069	prev->flags &= ~CF_NEW;
		1070	prev->flags \|= CF_RUNNING;
		1071	}
		1072
		1073	prev->flags &= ~CF_RUNNING;
		1074	next->flags \|= CF_RUNNING;
703		1075
704	LOCK;	1076	LOCK;
705		1077
706	if (next->mainstack)	1078	if (expect_false (next->flags & CF_NEW))
707	{	1079	{
708	/* coroutine already started */	1080	/* need to start coroutine */
709	SAVE (prev, flags);	1081	next->flags &= ~CF_NEW;
710	LOAD (next);	1082	/* first get rid of the old state */
		1083	save_perl (aTHX_ prev);
		1084	/* setup coroutine call */
		1085	coro_setup (aTHX_ next);
711	}	1086	}
712	else	1087	else
713	{	1088	{
714	/* need to start coroutine */	1089	/* coroutine already started */
715	/* first get rid of the old state */	1090	save_perl (aTHX_ prev);
716	SAVE (prev, -1);	1091	load_perl (aTHX_ next);
717	/* setup coroutine call */
718	setup_coro (next);
719	/* need a stack */
720	next->stack = 0;
721	}	1092	}
722		1093
723	if (!prev->stack)
724	/* create a new empty context */
725	Newz (0, prev->stack, 1, coro_stack);
726
727	prev__stack = prev->stack;	1094	prev__cctx = prev->cctx;
728		1095
729	/* possibly "free" the stack */	1096	/* possibly "free" the cctx */
730	if (prev__stack->idle_sp == STACKLEVEL)	1097	if (expect_true (prev__cctx->idle_sp == STACKLEVEL && !(prev__cctx->flags & CC_TRACE)))
731	{	1098	{
732	stack_put (prev__stack);	1099	/* I assume that STACKLEVEL is a stronger indicator than PL_top_env changes */
		1100	assert (("ERROR: current top_env must equal previous top_env", PL_top_env == prev__cctx->idle_te));
		1101
733	prev->stack = 0;	1102	prev->cctx = 0;
		1103
		1104	/* if the cctx is about to be destroyed we need to make sure we won't see it in cctx_get */
		1105	/* without this the next cctx_get might destroy the prev__cctx while still in use */
		1106	if (expect_false (CCTX_EXPIRED (prev__cctx)))
		1107	next->cctx = cctx_get (aTHX);
		1108
		1109	cctx_put (prev__cctx);
734	}	1110	}
735		1111
736	if (!next->stack)	1112	++next->usecount;
737	next->stack = stack_get ();
738		1113
739	if (prev__stack != next->stack)	1114	if (expect_true (!next->cctx))
		1115	next->cctx = cctx_get (aTHX);
		1116
		1117	if (expect_false (prev__cctx != next->cctx))
740	{	1118	{
741	prev__stack->top_env = PL_top_env;	1119	prev__cctx->top_env = PL_top_env;
742	PL_top_env = next->stack->top_env;	1120	PL_top_env = next->cctx->top_env;
743	coro_transfer (&prev__stack->cctx, &next->stack->cctx);	1121	coro_transfer (&prev__cctx->cctx, &next->cctx->cctx);
744	}	1122	}
745		1123
746	free_coro_mortal ();	1124	free_coro_mortal (aTHX);
747
748	UNLOCK;	1125	UNLOCK;
749	}
750	}
751		1126
752	/* use this function pointer to call the above function */	1127	if (expect_false (prev->throw \|\| next->throw))
753	/* this is done to increase chances of the compiler not inlining the call */	1128	{
754	/* not static to make it even harder for the compiler (and theoretically impossible in most cases */	1129	struct coro *coro = SvSTATE (coro_current);
755	void (coro_state_transfer)(pTHX_ struct coro prev, struct coro *next, int flags) = transfer_impl;	1130
		1131	if (coro->throw)
		1132	{
		1133	SV *exception = coro->throw;
		1134	coro->throw = 0;
		1135	sv_setsv (ERRSV, exception);
		1136	croak (0);
		1137	}
		1138	}
		1139	}
		1140	}
756		1141
757	struct transfer_args	1142	struct transfer_args
758	{	1143	{
759	struct coro prev, next;	1144	struct coro prev, next;
760	int flags;
761	};	1145	};
762		1146
763	#define TRANSFER(ta) coro_state_transfer ((ta).prev, (ta).next, (ta).flags)	1147	#define TRANSFER(ta) transfer (aTHX_ (ta).prev, (ta).next)
		1148	#define TRANSFER_CHECK(ta) transfer_check (aTHX_ (ta).prev, (ta).next)
764		1149
		1150	/ high level stuff ******************************************************/
		1151
765	static void	1152	static int
766	coro_state_destroy (struct coro *coro)	1153	coro_state_destroy (pTHX_ struct coro *coro)
767	{	1154	{
768	if (coro->refcnt--)	1155	if (coro->flags & CF_DESTROYED)
769	return;	1156	return 0;
		1157
		1158	coro->flags \|= CF_DESTROYED;
		1159
		1160	if (coro->flags & CF_READY)
		1161	{
		1162	/* reduce nready, as destroying a ready coro effectively unreadies it */
		1163	/* alternative: look through all ready queues and remove the coro */
		1164	LOCK;
		1165	--coro_nready;
		1166	UNLOCK;
		1167	}
		1168	else
		1169	coro->flags \|= CF_READY; /* make sure it is NOT put into the readyqueue */
770		1170
771	if (coro->mainstack && coro->mainstack != main_mainstack)	1171	if (coro->mainstack && coro->mainstack != main_mainstack)
772	{	1172	{
773	struct coro temp;	1173	struct coro temp;
774		1174
775	SAVE (aTHX_ (&temp), TRANSFER_SAVE_ALL);	1175	if (coro->flags & CF_RUNNING)
		1176	croak ("FATAL: tried to destroy currently running coroutine");
		1177
		1178	save_perl (aTHX_ &temp);
776	LOAD (aTHX_ coro);	1179	load_perl (aTHX_ coro);
777		1180
778	destroy_stacks (aTHX);	1181	coro_destroy (aTHX_ coro);
779		1182
780	LOAD ((&temp)); /* this will get rid of defsv etc.. */	1183	load_perl (aTHX_ &temp);
781		1184
782	coro->mainstack = 0;	1185	coro->slot = 0;
783	}	1186	}
784		1187
785	stack_free (coro->stack);	1188	cctx_destroy (coro->cctx);
786	SvREFCNT_dec (coro->args);	1189	SvREFCNT_dec (coro->args);
787	Safefree (coro);	1190
		1191	if (coro->next) coro->next->prev = coro->prev;
		1192	if (coro->prev) coro->prev->next = coro->next;
		1193	if (coro == coro_first) coro_first = coro->next;
		1194
		1195	return 1;
788	}	1196	}
789		1197
790	static int	1198	static int
791	coro_state_clear (SV sv, MAGIC mg)	1199	coro_state_free (pTHX_ SV sv, MAGIC mg)
792	{	1200	{
793	struct coro coro = (struct coro )mg->mg_ptr;	1201	struct coro coro = (struct coro )mg->mg_ptr;
794	mg->mg_ptr = 0;	1202	mg->mg_ptr = 0;
795		1203
		1204	coro->hv = 0;
		1205
		1206	if (--coro->refcnt < 0)
		1207	{
796	coro_state_destroy (coro);	1208	coro_state_destroy (aTHX_ coro);
		1209	Safefree (coro);
		1210	}
797		1211
798	return 0;	1212	return 0;
799	}	1213	}
800		1214
801	static int	1215	static int
802	coro_state_dup (MAGIC mg, CLONE_PARAMS params)	1216	coro_state_dup (pTHX_ MAGIC mg, CLONE_PARAMS params)
803	{	1217	{
804	struct coro coro = (struct coro )mg->mg_ptr;	1218	struct coro coro = (struct coro )mg->mg_ptr;
805		1219
806	++coro->refcnt;	1220	++coro->refcnt;
807		1221
808	return 0;	1222	return 0;
809	}	1223	}
810		1224
811	static MGVTBL coro_state_vtbl = { 0, 0, 0, 0, coro_state_clear, 0, coro_state_dup, 0 };	1225	static MGVTBL coro_state_vtbl = {
		1226	0, 0, 0, 0,
		1227	coro_state_free,
		1228	0,
		1229	#ifdef MGf_DUP
		1230	coro_state_dup,
		1231	#else
		1232	# define MGf_DUP 0
		1233	#endif
		1234	};
812		1235
813	static struct coro *
814	SvSTATE (SV *coro)
815	{
816	HV *stash;
817	MAGIC *mg;
818
819	if (SvROK (coro))
820	coro = SvRV (coro);
821
822	stash = SvSTASH (coro);
823	if (stash != coro_stash && stash != coro_state_stash)
824	{
825	/* very slow, but rare, check */
826	if (!sv_derived_from (sv_2mortal (newRV_inc (coro)), "Coro::State"))
827	croak ("Coro::State object required");
828	}
829
830	mg = SvMAGIC (coro);
831	assert (mg->mg_type == PERL_MAGIC_ext);
832	return (struct coro *)mg->mg_ptr;
833	}
834
835	static void	1236	static void
836	prepare_transfer (pTHX_ struct transfer_args ta, SV prev, SV *next, int flags)	1237	prepare_transfer (pTHX_ struct transfer_args ta, SV prev_sv, SV *next_sv)
837	{	1238	{
838	ta->prev = SvSTATE (prev);	1239	ta->prev = SvSTATE (prev_sv);
839	ta->next = SvSTATE (next);	1240	ta->next = SvSTATE (next_sv);
840	ta->flags = flags;	1241	TRANSFER_CHECK (*ta);
841	}	1242	}
842		1243
843	static void	1244	static void
844	api_transfer (SV prev, SV next, int flags)	1245	api_transfer (SV prev_sv, SV next_sv)
845	{	1246	{
846	dTHX;	1247	dTHX;
847	struct transfer_args ta;	1248	struct transfer_args ta;
848		1249
849	prepare_transfer (aTHX_ &ta, prev, next, flags);	1250	prepare_transfer (aTHX_ &ta, prev_sv, next_sv);
850	TRANSFER (ta);	1251	TRANSFER (ta);
851	}	1252	}
852		1253
853	/ Coro ******************************************************************/	1254	/ Coro ******************************************************************/
854		1255
855	#define PRIO_MAX 3
856	#define PRIO_HIGH 1
857	#define PRIO_NORMAL 0
858	#define PRIO_LOW -1
859	#define PRIO_IDLE -3
860	#define PRIO_MIN -4
861
862	/* for Coro.pm */
863	static GV coro_current, coro_idle;
864	static AV *coro_ready [PRIO_MAX-PRIO_MIN+1];
865	static int coro_nready;
866
867	static void	1256	static void
868	coro_enq (pTHX_ SV *sv)	1257	coro_enq (pTHX_ SV *coro_sv)
869	{	1258	{
870	int prio;
871
872	if (SvTYPE (sv) != SVt_PVHV)
873	croak ("Coro::ready tried to enqueue something that is not a coroutine");
874
875	prio = SvSTATE (sv)->prio;
876
877	av_push (coro_ready [prio - PRIO_MIN], sv);	1259	av_push (coro_ready [SvSTATE (coro_sv)->prio - PRIO_MIN], coro_sv);
878	coro_nready++;
879	}	1260	}
880		1261
881	static SV *	1262	static SV *
882	coro_deq (pTHX_ int min_prio)	1263	coro_deq (pTHX_ int min_prio)
883	{	1264	{
…		…
887	if (min_prio < 0)	1268	if (min_prio < 0)
888	min_prio = 0;	1269	min_prio = 0;
889		1270
890	for (prio = PRIO_MAX - PRIO_MIN + 1; --prio >= min_prio; )	1271	for (prio = PRIO_MAX - PRIO_MIN + 1; --prio >= min_prio; )
891	if (AvFILLp (coro_ready [prio]) >= 0)	1272	if (AvFILLp (coro_ready [prio]) >= 0)
892	{
893	coro_nready--;
894	return av_shift (coro_ready [prio]);	1273	return av_shift (coro_ready [prio]);
895	}
896		1274
897	return 0;	1275	return 0;
898	}	1276	}
899		1277
900	static void	1278	static int
901	api_ready (SV *coro)	1279	api_ready (SV *coro_sv)
902	{	1280	{
903	dTHX;	1281	dTHX;
		1282	struct coro *coro;
904		1283
905	if (SvROK (coro))	1284	if (SvROK (coro_sv))
906	coro = SvRV (coro);	1285	coro_sv = SvRV (coro_sv);
		1286
		1287	coro = SvSTATE (coro_sv);
		1288
		1289	if (coro->flags & CF_READY)
		1290	return 0;
		1291
		1292	coro->flags \|= CF_READY;
907		1293
908	LOCK;	1294	LOCK;
909	coro_enq (aTHX_ SvREFCNT_inc (coro));	1295	coro_enq (aTHX_ SvREFCNT_inc (coro_sv));
		1296	++coro_nready;
910	UNLOCK;	1297	UNLOCK;
911	}
912		1298
		1299	return 1;
		1300	}
		1301
913	static void	1302	static int
		1303	api_is_ready (SV *coro_sv)
		1304	{
		1305	dTHX;
		1306	return !!(SvSTATE (coro_sv)->flags & CF_READY);
		1307	}
		1308
		1309	static void
914	prepare_schedule (aTHX_ struct transfer_args *ta)	1310	prepare_schedule (pTHX_ struct transfer_args *ta)
915	{	1311	{
916	SV current, prev, *next;	1312	SV prev_sv, next_sv;
		1313
		1314	for (;;)
		1315	{
		1316	LOCK;
		1317	next_sv = coro_deq (aTHX_ PRIO_MIN);
		1318
		1319	/* nothing to schedule: call the idle handler */
		1320	if (expect_false (!next_sv))
		1321	{
		1322	dSP;
		1323	UNLOCK;
		1324
		1325	ENTER;
		1326	SAVETMPS;
		1327
		1328	PUSHMARK (SP);
		1329	PUTBACK;
		1330	call_sv (get_sv ("Coro::idle", FALSE), G_DISCARD);
		1331
		1332	FREETMPS;
		1333	LEAVE;
		1334	continue;
		1335	}
		1336
		1337	ta->next = SvSTATE (next_sv);
		1338
		1339	/* cannot transfer to destroyed coros, skip and look for next */
		1340	if (expect_false (ta->next->flags & CF_DESTROYED))
		1341	{
		1342	UNLOCK;
		1343	SvREFCNT_dec (next_sv);
		1344	/* coro_nready is already taken care of by destroy */
		1345	continue;
		1346	}
		1347
		1348	--coro_nready;
		1349	UNLOCK;
		1350	break;
		1351	}
		1352
		1353	/* free this only after the transfer */
		1354	prev_sv = SvRV (coro_current);
		1355	ta->prev = SvSTATE (prev_sv);
		1356	TRANSFER_CHECK (*ta);
		1357	assert (ta->next->flags & CF_READY);
		1358	ta->next->flags &= ~CF_READY;
		1359	SvRV_set (coro_current, next_sv);
917		1360
918	LOCK;	1361	LOCK;
919
920	current = GvSV (coro_current);
921
922	for (;;)
923	{
924	LOCK;
925
926	next = coro_deq (aTHX_ PRIO_MIN);
927
928	if (next)
929	break;
930
931	UNLOCK;
932
933	{
934	dSP;
935
936	ENTER;
937	SAVETMPS;
938
939	PUSHMARK (SP);
940	PUTBACK;
941	call_sv (GvSV (coro_idle), G_DISCARD);
942
943	FREETMPS;
944	LEAVE;
945	}
946	}
947
948	prev = SvRV (current);
949	SvRV (current) = next;
950
951	/* free this only after the transfer */
952	free_coro_mortal ();	1362	free_coro_mortal (aTHX);
953	coro_mortal = prev;	1363	coro_mortal = prev_sv;
954
955	ta->prev = SvSTATE (prev);
956	ta->next = SvSTATE (next);
957	ta->flags = TRANSFER_SAVE_ALL;
958
959	UNLOCK;	1364	UNLOCK;
960	}	1365	}
961		1366
962	static void	1367	static void
963	prepare_cede (aTHX_ struct transfer_args *ta)	1368	prepare_cede (pTHX_ struct transfer_args *ta)
964	{	1369	{
965	LOCK;	1370	api_ready (coro_current);
966	coro_enq (aTHX_ SvREFCNT_inc (SvRV (GvSV (coro_current))));
967	UNLOCK;
968
969	prepare_schedule (ta);	1371	prepare_schedule (aTHX_ ta);
		1372	}
		1373
		1374	static int
		1375	prepare_cede_notself (pTHX_ struct transfer_args *ta)
		1376	{
		1377	if (coro_nready)
		1378	{
		1379	SV *prev = SvRV (coro_current);
		1380	prepare_schedule (aTHX_ ta);
		1381	api_ready (prev);
		1382	return 1;
		1383	}
		1384	else
		1385	return 0;
970	}	1386	}
971		1387
972	static void	1388	static void
973	api_schedule (void)	1389	api_schedule (void)
974	{	1390	{
975	dTHX;	1391	dTHX;
976	struct transfer_args ta;	1392	struct transfer_args ta;
977		1393
978	prepare_schedule (&ta);	1394	prepare_schedule (aTHX_ &ta);
979	TRANSFER (ta);	1395	TRANSFER (ta);
980	}	1396	}
981		1397
982	static void	1398	static int
983	api_cede (void)	1399	api_cede (void)
984	{	1400	{
985	dTHX;	1401	dTHX;
986	struct transfer_args ta;	1402	struct transfer_args ta;
987		1403
988	prepare_cede (&ta);	1404	prepare_cede (aTHX_ &ta);
		1405
		1406	if (expect_true (ta.prev != ta.next))
		1407	{
989	TRANSFER (ta);	1408	TRANSFER (ta);
		1409	return 1;
		1410	}
		1411	else
		1412	return 0;
990	}	1413	}
991		1414
		1415	static int
		1416	api_cede_notself (void)
		1417	{
		1418	dTHX;
		1419	struct transfer_args ta;
		1420
		1421	if (prepare_cede_notself (aTHX_ &ta))
		1422	{
		1423	TRANSFER (ta);
		1424	return 1;
		1425	}
		1426	else
		1427	return 0;
		1428	}
		1429
		1430	static void
		1431	api_trace (SV *coro_sv, int flags)
		1432	{
		1433	dTHX;
		1434	struct coro *coro = SvSTATE (coro_sv);
		1435
		1436	if (flags & CC_TRACE)
		1437	{
		1438	if (!coro->cctx)
		1439	coro->cctx = cctx_new ();
		1440	else if (!(coro->cctx->flags & CC_TRACE))
		1441	croak ("cannot enable tracing on coroutine with custom stack");
		1442
		1443	coro->cctx->flags \|= CC_NOREUSE \| (flags & (CC_TRACE \| CC_TRACE_ALL));
		1444	}
		1445	else if (coro->cctx && coro->cctx->flags & CC_TRACE)
		1446	{
		1447	coro->cctx->flags &= ~(CC_TRACE \| CC_TRACE_ALL);
		1448
		1449	if (coro->flags & CF_RUNNING)
		1450	PL_runops = RUNOPS_DEFAULT;
		1451	else
		1452	coro->slot->runops = RUNOPS_DEFAULT;
		1453	}
		1454	}
		1455
992	MODULE = Coro::State PACKAGE = Coro::State	1456	MODULE = Coro::State PACKAGE = Coro::State PREFIX = api_
993		1457
994	PROTOTYPES: DISABLE	1458	PROTOTYPES: DISABLE
995		1459
996	BOOT:	1460	BOOT:
997	{	1461	{
998	#ifdef USE_ITHREADS	1462	#ifdef USE_ITHREADS
999	MUTEX_INIT (&coro_mutex);	1463	MUTEX_INIT (&coro_mutex);
1000	#endif	1464	#endif
1001	BOOT_PAGESIZE;	1465	BOOT_PAGESIZE;
1002		1466
		1467	irsgv = gv_fetchpv ("/" , GV_ADD\|GV_NOTQUAL, SVt_PV);
		1468	stdoutgv = gv_fetchpv ("STDOUT", GV_ADD\|GV_NOTQUAL, SVt_PVIO);
		1469
1003	coro_state_stash = gv_stashpv ("Coro::State", TRUE);	1470	coro_state_stash = gv_stashpv ("Coro::State", TRUE);
1004		1471
1005	newCONSTSUB (coro_state_stash, "SAVE_DEFAV", newSViv (TRANSFER_SAVE_DEFAV));	1472	newCONSTSUB (coro_state_stash, "CC_TRACE" , newSViv (CC_TRACE));
1006	newCONSTSUB (coro_state_stash, "SAVE_DEFSV", newSViv (TRANSFER_SAVE_DEFSV));	1473	newCONSTSUB (coro_state_stash, "CC_TRACE_SUB" , newSViv (CC_TRACE_SUB));
1007	newCONSTSUB (coro_state_stash, "SAVE_ERRSV", newSViv (TRANSFER_SAVE_ERRSV));	1474	newCONSTSUB (coro_state_stash, "CC_TRACE_LINE", newSViv (CC_TRACE_LINE));
		1475	newCONSTSUB (coro_state_stash, "CC_TRACE_ALL" , newSViv (CC_TRACE_ALL));
1008		1476
1009	main_mainstack = PL_mainstack;	1477	main_mainstack = PL_mainstack;
		1478	main_top_env = PL_top_env;
		1479
		1480	while (main_top_env->je_prev)
		1481	main_top_env = main_top_env->je_prev;
1010		1482
1011	coroapi.ver = CORO_API_VERSION;	1483	coroapi.ver = CORO_API_VERSION;
1012	coroapi.transfer = api_transfer;	1484	coroapi.transfer = api_transfer;
1013		1485
1014	assert (("PRIO_NORMAL must be 0", !PRIO_NORMAL));	1486	assert (("PRIO_NORMAL must be 0", !PRIO_NORMAL));
…		…
1021	struct coro *coro;	1493	struct coro *coro;
1022	HV *hv;	1494	HV *hv;
1023	int i;	1495	int i;
1024		1496
1025	Newz (0, coro, 1, struct coro);	1497	Newz (0, coro, 1, struct coro);
1026	coro->args = newAV ();	1498	coro->args = newAV ();
		1499	coro->flags = CF_NEW;
1027		1500
		1501	if (coro_first) coro_first->prev = coro;
		1502	coro->next = coro_first;
		1503	coro_first = coro;
		1504
1028	hv = newHV ();	1505	coro->hv = hv = newHV ();
1029	sv_magicext ((SV )hv, 0, PERL_MAGIC_ext, &coro_state_vtbl, (char )coro, 0)->mg_flags \|= MGf_DUP;	1506	sv_magicext ((SV )hv, 0, PERL_MAGIC_ext, &coro_state_vtbl, (char )coro, 0)->mg_flags \|= MGf_DUP;
1030	RETVAL = sv_bless (newRV_noinc ((SV *)hv), gv_stashpv (klass, 1));	1507	RETVAL = sv_bless (newRV_noinc ((SV *)hv), gv_stashpv (klass, 1));
1031		1508
		1509	av_extend (coro->args, items - 1);
1032	for (i = 1; i < items; i++)	1510	for (i = 1; i < items; i++)
1033	av_push (coro->args, newSVsv (ST (i)));	1511	av_push (coro->args, newSVsv (ST (i)));
1034
1035	/coro->mainstack = 0; //actual work is done inside transfer /
1036	/coro->stack = 0;/
1037	}	1512	}
1038	OUTPUT:	1513	OUTPUT:
1039	RETVAL	1514	RETVAL
1040		1515
		1516	# these not obviously related functions are all rolled into the same xs
		1517	# function to increase chances that they all will call transfer with the same
		1518	# stack offset
1041	void	1519	void
1042	_set_stacklevel (...)	1520	_set_stacklevel (...)
1043	ALIAS:	1521	ALIAS:
1044	Coro::State::transfer = 1	1522	Coro::State::transfer = 1
1045	Coro::schedule = 2	1523	Coro::schedule = 2
1046	Coro::cede = 3	1524	Coro::cede = 3
1047	Coro::Cont::yield = 4	1525	Coro::cede_notself = 4
1048	CODE:	1526	CODE:
1049	{	1527	{
1050	struct transfer_args ta;	1528	struct transfer_args ta;
1051		1529
1052	switch (ix)	1530	switch (ix)
1053	{	1531	{
1054	case 0:	1532	case 0:
1055	ta.prev = (struct coro )INT2PTR (coro_stack , SvIV (ST (0)));	1533	ta.prev = (struct coro )INT2PTR (coro_cctx , SvIV (ST (0)));
1056	ta.next = 0;	1534	ta.next = 0;
1057	ta.flags = TRANSFER_SET_STACKLEVEL;
1058	break;	1535	break;
1059		1536
1060	case 1:	1537	case 1:
1061	if (items != 3)	1538	if (items != 2)
1062	croak ("Coro::State::transfer(prev,next,flags) expects three arguments, not %d", items);	1539	croak ("Coro::State::transfer (prev,next) expects two arguments, not %d", items);
1063		1540
1064	prepare_transfer (&ta, ST (0), ST (1), SvIV (ST (2)));	1541	prepare_transfer (aTHX_ &ta, ST (0), ST (1));
1065	break;	1542	break;
1066		1543
1067	case 2:	1544	case 2:
1068	prepare_schedule (&ta);	1545	prepare_schedule (aTHX_ &ta);
1069	break;	1546	break;
1070		1547
1071	case 3:	1548	case 3:
1072	prepare_cede (&ta);	1549	prepare_cede (aTHX_ &ta);
1073	break;	1550	break;
1074		1551
1075	case 4:	1552	case 4:
1076	{	1553	if (!prepare_cede_notself (aTHX_ &ta))
1077	SV *yieldstack;	1554	XSRETURN_EMPTY;
1078	SV *sv;
1079	AV *defav = GvAV (PL_defgv);
1080		1555
1081	yieldstack = *hv_fetch (
1082	(HV *)SvRV (GvSV (coro_current)),
1083	"yieldstack", sizeof ("yieldstack") - 1,
1084	0
1085	);
1086
1087	/* set up @_ -- ugly */
1088	av_clear (defav);
1089	av_fill (defav, items - 1);
1090	while (items--)
1091	av_store (defav, items, SvREFCNT_inc (ST(items)));
1092
1093	sv = av_pop ((AV *)SvRV (yieldstack));
1094	ta.prev = SvSTATE (av_fetch ((AV )SvRV (sv), 0, 0));
1095	ta.next = SvSTATE (av_fetch ((AV )SvRV (sv), 1, 0));
1096	ta.flags = 0;
1097	SvREFCNT_dec (sv);
1098	}
1099	break;	1556	break;
1100
1101	}	1557	}
1102		1558
		1559	BARRIER;
1103	TRANSFER (ta);	1560	TRANSFER (ta);
1104	}
1105		1561
1106	void	1562	if (expect_false (GIMME_V != G_VOID && ta.next != ta.prev))
1107	_clone_state_from (SV dst, SV src)	1563	XSRETURN_YES;
		1564	}
		1565
		1566	bool
		1567	_destroy (SV *coro_sv)
1108	CODE:	1568	CODE:
1109	{	1569	RETVAL = coro_state_destroy (aTHX_ SvSTATE (coro_sv));
1110	struct coro *coro_src = SvSTATE (src);	1570	OUTPUT:
1111		1571	RETVAL
1112	sv_unmagic (SvRV (dst), PERL_MAGIC_ext);
1113
1114	++coro_src->refcnt;
1115	sv_magicext (SvRV (dst), 0, PERL_MAGIC_ext, &coro_state_vtbl, (char *)coro_src, 0)->mg_flags \|= MGf_DUP;
1116	}
1117
1118	void
1119	_nonlocal_goto (IV nextop)
1120	CODE:
1121	/* uuh, somebody will kill me again for this */
1122	PL_op->op_next = INT2PTR (OP *, nextop);
1123		1572
1124	void	1573	void
1125	_exit (code)	1574	_exit (code)
1126	int code	1575	int code
1127	PROTOTYPE: $	1576	PROTOTYPE: $
1128	CODE:	1577	CODE:
1129	_exit (code);	1578	_exit (code);
1130		1579
		1580	int
		1581	cctx_stacksize (int new_stacksize = 0)
		1582	CODE:
		1583	RETVAL = coro_stacksize;
		1584	if (new_stacksize)
		1585	coro_stacksize = new_stacksize;
		1586	OUTPUT:
		1587	RETVAL
		1588
		1589	int
		1590	cctx_count ()
		1591	CODE:
		1592	RETVAL = cctx_count;
		1593	OUTPUT:
		1594	RETVAL
		1595
		1596	int
		1597	cctx_idle ()
		1598	CODE:
		1599	RETVAL = cctx_idle;
		1600	OUTPUT:
		1601	RETVAL
		1602
		1603	void
		1604	list ()
		1605	PPCODE:
		1606	{
		1607	struct coro *coro;
		1608	for (coro = coro_first; coro; coro = coro->next)
		1609	if (coro->hv)
		1610	XPUSHs (sv_2mortal (newRV_inc ((SV *)coro->hv)));
		1611	}
		1612
		1613	void
		1614	call (Coro::State coro, SV *coderef)
		1615	ALIAS:
		1616	eval = 1
		1617	CODE:
		1618	{
		1619	if (coro->mainstack)
		1620	{
		1621	struct coro temp;
		1622
		1623	if (!(coro->flags & CF_RUNNING))
		1624	{
		1625	save_perl (aTHX_ &temp);
		1626	load_perl (aTHX_ coro);
		1627	}
		1628
		1629	{
		1630	dSP;
		1631	ENTER;
		1632	SAVETMPS;
		1633	PUSHMARK (SP);
		1634	PUTBACK;
		1635
		1636	if (ix)
		1637	eval_sv (coderef, 0);
		1638	else
		1639	call_sv (coderef, G_KEEPERR \| G_EVAL \| G_VOID \| G_DISCARD);
		1640
		1641	SPAGAIN;
		1642	FREETMPS;
		1643	LEAVE;
		1644	PUTBACK;
		1645	}
		1646
		1647	if (!(coro->flags & CF_RUNNING))
		1648	{
		1649	save_perl (aTHX_ coro);
		1650	load_perl (aTHX_ &temp);
		1651	}
		1652	}
		1653	}
		1654
		1655	SV *
		1656	is_ready (Coro::State coro)
		1657	PROTOTYPE: $
		1658	ALIAS:
		1659	is_ready = CF_READY
		1660	is_running = CF_RUNNING
		1661	is_new = CF_NEW
		1662	is_destroyed = CF_DESTROYED
		1663	CODE:
		1664	RETVAL = boolSV (coro->flags & ix);
		1665	OUTPUT:
		1666	RETVAL
		1667
		1668	void
		1669	api_trace (SV *coro, int flags = CC_TRACE \| CC_TRACE_SUB)
		1670
		1671	SV *
		1672	has_stack (Coro::State coro)
		1673	PROTOTYPE: $
		1674	CODE:
		1675	RETVAL = boolSV (!!coro->cctx);
		1676	OUTPUT:
		1677	RETVAL
		1678
		1679	int
		1680	is_traced (Coro::State coro)
		1681	PROTOTYPE: $
		1682	CODE:
		1683	RETVAL = (coro->cctx ? coro->cctx->flags : 0) & CC_TRACE_ALL;
		1684	OUTPUT:
		1685	RETVAL
		1686
		1687	IV
		1688	rss (Coro::State coro)
		1689	PROTOTYPE: $
		1690	ALIAS:
		1691	usecount = 1
		1692	CODE:
		1693	switch (ix)
		1694	{
		1695	case 0: RETVAL = coro_rss (aTHX_ coro); break;
		1696	case 1: RETVAL = coro->usecount; break;
		1697	}
		1698	OUTPUT:
		1699	RETVAL
		1700
		1701
1131	MODULE = Coro::State PACKAGE = Coro	1702	MODULE = Coro::State PACKAGE = Coro
1132		1703
1133	BOOT:	1704	BOOT:
1134	{	1705	{
1135	int i;	1706	int i;
1136		1707
		1708	sv_pool_rss = get_sv ("Coro::POOL_RSS" , TRUE);
		1709	get_sv ("Coro::POOL_RSS" , TRUE); /* silence stupid 5.10 warning */
		1710	sv_pool_size = get_sv ("Coro::POOL_SIZE" , TRUE);
		1711	get_sv ("Coro::POOL_SIZE" , TRUE); /* silence stupid 5.10 warning */
		1712	av_async_pool = get_av ("Coro::async_pool", TRUE);
		1713	get_av ("Coro::async_pool", TRUE); /* silence stupid 5.10 warning */
		1714
		1715	coro_current = get_sv ("Coro::current", FALSE);
		1716	SvREADONLY_on (coro_current);
		1717
1137	coro_stash = gv_stashpv ("Coro", TRUE);	1718	coro_stash = gv_stashpv ("Coro", TRUE);
1138		1719
1139	newCONSTSUB (coro_stash, "PRIO_MAX", newSViv (PRIO_MAX));	1720	newCONSTSUB (coro_stash, "PRIO_MAX", newSViv (PRIO_MAX));
1140	newCONSTSUB (coro_stash, "PRIO_HIGH", newSViv (PRIO_HIGH));	1721	newCONSTSUB (coro_stash, "PRIO_HIGH", newSViv (PRIO_HIGH));
1141	newCONSTSUB (coro_stash, "PRIO_NORMAL", newSViv (PRIO_NORMAL));	1722	newCONSTSUB (coro_stash, "PRIO_NORMAL", newSViv (PRIO_NORMAL));
1142	newCONSTSUB (coro_stash, "PRIO_LOW", newSViv (PRIO_LOW));	1723	newCONSTSUB (coro_stash, "PRIO_LOW", newSViv (PRIO_LOW));
1143	newCONSTSUB (coro_stash, "PRIO_IDLE", newSViv (PRIO_IDLE));	1724	newCONSTSUB (coro_stash, "PRIO_IDLE", newSViv (PRIO_IDLE));
1144	newCONSTSUB (coro_stash, "PRIO_MIN", newSViv (PRIO_MIN));	1725	newCONSTSUB (coro_stash, "PRIO_MIN", newSViv (PRIO_MIN));
1145		1726
1146	coro_current = gv_fetchpv ("Coro::current", TRUE, SVt_PV);
1147	coro_idle = gv_fetchpv ("Coro::idle" , TRUE, SVt_PV);
1148
1149	for (i = PRIO_MAX - PRIO_MIN + 1; i--; )	1727	for (i = PRIO_MAX - PRIO_MIN + 1; i--; )
1150	coro_ready[i] = newAV ();	1728	coro_ready[i] = newAV ();
1151		1729
1152	{	1730	{
1153	SV *sv = perl_get_sv("Coro::API", 1);	1731	SV *sv = perl_get_sv ("Coro::API", TRUE);
		1732	perl_get_sv ("Coro::API", TRUE); /* silence 5.10 warning */
1154		1733
1155	coroapi.schedule = api_schedule;	1734	coroapi.schedule = api_schedule;
1156	coroapi.cede = api_cede;	1735	coroapi.cede = api_cede;
		1736	coroapi.cede_notself = api_cede_notself;
1157	coroapi.ready = api_ready;	1737	coroapi.ready = api_ready;
		1738	coroapi.is_ready = api_is_ready;
1158	coroapi.nready = &coro_nready;	1739	coroapi.nready = &coro_nready;
1159	coroapi.current = coro_current;	1740	coroapi.current = coro_current;
1160		1741
1161	GCoroAPI = &coroapi;	1742	GCoroAPI = &coroapi;
1162	sv_setiv (sv, (IV)&coroapi);	1743	sv_setiv (sv, (IV)&coroapi);
1163	SvREADONLY_on (sv);	1744	SvREADONLY_on (sv);
1164	}	1745	}
1165	}	1746	}
		1747
		1748	void
		1749	_set_current (SV *current)
		1750	PROTOTYPE: $
		1751	CODE:
		1752	SvREFCNT_dec (SvRV (coro_current));
		1753	SvRV_set (coro_current, SvREFCNT_inc (SvRV (current)));
1166		1754
1167	int	1755	int
1168	prio (Coro::State coro, int newprio = 0)	1756	prio (Coro::State coro, int newprio = 0)
1169	ALIAS:	1757	ALIAS:
1170	nice = 1	1758	nice = 1
…		…
1173	RETVAL = coro->prio;	1761	RETVAL = coro->prio;
1174		1762
1175	if (items > 1)	1763	if (items > 1)
1176	{	1764	{
1177	if (ix)	1765	if (ix)
1178	newprio += coro->prio;	1766	newprio = coro->prio - newprio;
1179		1767
1180	if (newprio < PRIO_MIN) newprio = PRIO_MIN;	1768	if (newprio < PRIO_MIN) newprio = PRIO_MIN;
1181	if (newprio > PRIO_MAX) newprio = PRIO_MAX;	1769	if (newprio > PRIO_MAX) newprio = PRIO_MAX;
1182		1770
1183	coro->prio = newprio;	1771	coro->prio = newprio;
1184	}	1772	}
1185	}	1773	}
		1774	OUTPUT:
		1775	RETVAL
1186		1776
1187	void	1777	SV *
1188	ready (SV *self)	1778	ready (SV *self)
1189	PROTOTYPE: $	1779	PROTOTYPE: $
1190	CODE:	1780	CODE:
1191	api_ready (self);	1781	RETVAL = boolSV (api_ready (self));
		1782	OUTPUT:
		1783	RETVAL
1192		1784
1193	int	1785	int
1194	nready (...)	1786	nready (...)
1195	PROTOTYPE:	1787	PROTOTYPE:
1196	CODE:	1788	CODE:
1197	RETVAL = coro_nready;	1789	RETVAL = coro_nready;
1198	OUTPUT:	1790	OUTPUT:
1199	RETVAL	1791	RETVAL
1200		1792
		1793	void
		1794	throw (Coro::State self, SV *throw = &PL_sv_undef)
		1795	PROTOTYPE: $;$
		1796	CODE:
		1797	SvREFCNT_dec (self->throw);
		1798	self->throw = SvOK (throw) ? newSVsv (throw) : 0;
		1799
		1800	# for async_pool speedup
		1801	void
		1802	_pool_1 (SV *cb)
		1803	CODE:
		1804	{
		1805	struct coro *coro = SvSTATE (coro_current);
		1806	HV hv = (HV )SvRV (coro_current);
		1807	AV *defav = GvAV (PL_defgv);
		1808	SV *invoke = hv_delete (hv, "_invoke", sizeof ("_invoke") - 1, 0);
		1809	AV *invoke_av;
		1810	int i, len;
		1811
		1812	if (!invoke)
		1813	croak ("\3async_pool terminate\2\n");
		1814
		1815	SvREFCNT_dec (coro->saved_deffh);
		1816	coro->saved_deffh = SvREFCNT_inc ((SV *)PL_defoutgv);
		1817
		1818	hv_store (hv, "desc", sizeof ("desc") - 1,
		1819	newSVpvn ("[async_pool]", sizeof ("[async_pool]") - 1), 0);
		1820
		1821	invoke_av = (AV *)SvRV (invoke);
		1822	len = av_len (invoke_av);
		1823
		1824	sv_setsv (cb, AvARRAY (invoke_av)[0]);
		1825
		1826	if (len > 0)
		1827	{
		1828	av_fill (defav, len - 1);
		1829	for (i = 0; i < len; ++i)
		1830	av_store (defav, i, SvREFCNT_inc (AvARRAY (invoke_av)[i + 1]));
		1831	}
		1832
		1833	SvREFCNT_dec (invoke);
		1834	}
		1835
		1836	void
		1837	_pool_2 (SV *cb)
		1838	CODE:
		1839	{
		1840	struct coro *coro = SvSTATE (coro_current);
		1841
		1842	sv_setsv (cb, &PL_sv_undef);
		1843
		1844	SvREFCNT_dec ((SV )PL_defoutgv); PL_defoutgv = (GV )coro->saved_deffh;
		1845	coro->saved_deffh = 0;
		1846
		1847	if (coro_rss (aTHX_ coro) > SvIV (sv_pool_rss)
		1848	\|\| av_len (av_async_pool) + 1 >= SvIV (sv_pool_size))
		1849	croak ("\3async_pool terminate\2\n");
		1850
		1851	av_clear (GvAV (PL_defgv));
		1852	hv_store ((HV *)SvRV (coro_current), "desc", sizeof ("desc") - 1,
		1853	newSVpvn ("[async_pool idle]", sizeof ("[async_pool idle]") - 1), 0);
		1854
		1855	coro->prio = 0;
		1856
		1857	if (coro->cctx && (coro->cctx->flags & CC_TRACE))
		1858	api_trace (coro_current, 0);
		1859
		1860	av_push (av_async_pool, newSVsv (coro_current));
		1861	}
		1862
		1863
1201	MODULE = Coro::State PACKAGE = Coro::AIO	1864	MODULE = Coro::State PACKAGE = Coro::AIO
1202		1865
1203	SV *	1866	SV *
1204	_get_state ()	1867	_get_state ()
1205	CODE:	1868	CODE:
1206	{	1869	{
1207	struct {	1870	struct io_state *data;
1208	int errorno;
1209	int laststype;
1210	int laststatval;
1211	Stat_t statcache;
1212	} data;
1213		1871
		1872	RETVAL = newSV (sizeof (struct io_state));
		1873	data = (struct io_state *)SvPVX (RETVAL);
		1874	SvCUR_set (RETVAL, sizeof (struct io_state));
		1875	SvPOK_only (RETVAL);
		1876
1214	data.errorno = errno;	1877	data->errorno = errno;
1215	data.laststype = PL_laststype;	1878	data->laststype = PL_laststype;
1216	data.laststatval = PL_laststatval;	1879	data->laststatval = PL_laststatval;
1217	data.statcache = PL_statcache;	1880	data->statcache = PL_statcache;
1218
1219	RETVAL = newSVpvn ((char *)&data, sizeof data);
1220	}	1881	}
1221	OUTPUT:	1882	OUTPUT:
1222	RETVAL	1883	RETVAL
1223		1884
1224	void	1885	void
1225	_set_state (char *data_)	1886	_set_state (char *data_)
1226	PROTOTYPE: $	1887	PROTOTYPE: $
1227	CODE:	1888	CODE:
1228	{	1889	{
1229	struct {	1890	struct io_state data = (void )data_;
1230	int errorno;
1231	int laststype;
1232	int laststatval;
1233	Stat_t statcache;
1234	} data = (void )data_;
1235		1891
1236	errno = data->errorno;	1892	errno = data->errorno;
1237	PL_laststype = data->laststype;	1893	PL_laststype = data->laststype;
1238	PL_laststatval = data->laststatval;	1894	PL_laststatval = data->laststatval;
1239	PL_statcache = data->statcache;	1895	PL_statcache = data->statcache;
1240	}	1896	}
		1897

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Comparing Coro/Coro/State.xs (file contents): Revision 1.97 by root, Sun Nov 26 21:21:14 2006 UTC vs. Revision 1.198 by root, Sun Oct 7 03:58:37 2007 UTC

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Comparing Coro/Coro/State.xs (file contents):
Revision 1.97 by root, Sun Nov 26 21:21:14 2006 UTC vs.
Revision 1.198 by root, Sun Oct 7 03:58:37 2007 UTC