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

Comparing Coro/Coro/State.xs (file contents):
Revision 1.107 by root, Mon Nov 27 02:15:51 2006 UTC vs.
Revision 1.198 by root, Sun Oct 7 03:58:37 2007 UTC

…		…
1	#include "libcoro/coro.c"	1	#include "libcoro/coro.c"
		2
		3	#define PERL_NO_GET_CONTEXT
		4	#define PERL_EXT
2		5
3	#include "EXTERN.h"	6	#include "EXTERN.h"
4	#include "perl.h"	7	#include "perl.h"
5	#include "XSUB.h"	8	#include "XSUB.h"
6		9
7	#include "patchlevel.h"	10	#include "patchlevel.h"
8		11
9	#if USE_VALGRIND
10	# include <valgrind/valgrind.h>
11	#endif
12
13	#define PERL_VERSION_ATLEAST(a,b,c) \
14	(PERL_REVISION > (a) \
15	\|\| (PERL_REVISION == (a) \
16	&& (PERL_VERSION > (b) \
17	\|\| (PERL_VERSION == (b) && PERLSUBVERSION >= (c)))))
18
19	#if !PERL_VERSION_ATLEAST (5,6,0)
20	# ifndef PL_ppaddr
21	# define PL_ppaddr ppaddr
22	# endif
23	# ifndef call_sv
24	# define call_sv perl_call_sv
25	# endif
26	# ifndef get_sv
27	# define get_sv perl_get_sv
28	# endif
29	# ifndef get_cv
30	# define get_cv perl_get_cv
31	# endif
32	# ifndef IS_PADGV
33	# define IS_PADGV(v) 0
34	# endif
35	# ifndef IS_PADCONST
36	# define IS_PADCONST(v) 0
37	# endif
38	#endif
39
40	#include <stdio.h>	12	#include <stdio.h>
41	#include <errno.h>	13	#include <errno.h>
42		14	#include <assert.h>
43	#if !__i386 && !__x86_64 && !__powerpc && !__m68k && !__alpha && !__mips && !__sparc64
44	# undef STACKGUARD
45	#endif
46
47	#ifndef STACKGUARD
48	# define STACKGUARD 0
49	#endif
50		15
51	#ifdef HAVE_MMAP	16	#ifdef HAVE_MMAP
52	# include <unistd.h>	17	# include <unistd.h>
53	# include <sys/mman.h>	18	# include <sys/mman.h>
54	# ifndef MAP_ANONYMOUS	19	# ifndef MAP_ANONYMOUS
69	#else	34	#else
70	# define PAGESIZE 0	35	# define PAGESIZE 0
71	# define BOOT_PAGESIZE (void)0	36	# define BOOT_PAGESIZE (void)0
72	#endif	37	#endif
73		38
74	/* The next macro should declare a variable stacklevel that contains and approximation	39	#if CORO_USE_VALGRIND
75	* to the current C stack pointer. Its property is that it changes with each call	40	# include <valgrind/valgrind.h>
76	* and should be unique. */	41	# define REGISTER_STACK(cctx,start,end) (cctx)->valgrind_id = VALGRIND_STACK_REGISTER ((start), (end))
		42	#else
		43	# define REGISTER_STACK(cctx,start,end)
		44	#endif
		45
		46	/* the maximum number of idle cctx that will be pooled */
		47	#define MAX_IDLE_CCTX 8
		48
		49	#define PERL_VERSION_ATLEAST(a,b,c) \
		50	(PERL_REVISION > (a) \
		51	\|\| (PERL_REVISION == (a) \
		52	&& (PERL_VERSION > (b) \
		53	\|\| (PERL_VERSION == (b) && PERLSUBVERSION >= (c)))))
		54
		55	#if !PERL_VERSION_ATLEAST (5,6,0)
		56	# ifndef PL_ppaddr
		57	# define PL_ppaddr ppaddr
		58	# endif
		59	# ifndef call_sv
		60	# define call_sv perl_call_sv
		61	# endif
		62	# ifndef get_sv
		63	# define get_sv perl_get_sv
		64	# endif
		65	# ifndef get_cv
		66	# define get_cv perl_get_cv
		67	# endif
		68	# ifndef IS_PADGV
		69	# define IS_PADGV(v) 0
		70	# endif
		71	# ifndef IS_PADCONST
		72	# define IS_PADCONST(v) 0
		73	# endif
		74	#endif
		75
		76	/* 5.8.7 */
		77	#ifndef SvRV_set
		78	# define SvRV_set(s,v) SvRV(s) = (v)
		79	#endif
		80
		81	/* 5.8.8 */
		82	#ifndef GV_NOTQUAL
		83	# define GV_NOTQUAL 0
		84	#endif
		85	#ifndef newSV
		86	# define newSV(l) NEWSV(0,l)
		87	#endif
		88
		89	#if !__i386 && !__x86_64 && !__powerpc && !__m68k && !__alpha && !__mips && !__sparc64
		90	# undef CORO_STACKGUARD
		91	#endif
		92
		93	#ifndef CORO_STACKGUARD
		94	# define CORO_STACKGUARD 0
		95	#endif
		96
		97	/* prefer perl internal functions over our own? */
		98	#ifndef CORO_PREFER_PERL_FUNCTIONS
		99	# define CORO_PREFER_PERL_FUNCTIONS 0
		100	#endif
		101
		102	/* The next macros try to return the current stack pointer, in an as
		103	* portable way as possible. */
77	#define dSTACKLEVEL int stacklevel	104	#define dSTACKLEVEL volatile char stacklevel
78	#define STACKLEVEL ((void *)&stacklevel)	105	#define STACKLEVEL ((void *)&stacklevel)
79		106
80	#define IN_DESTRUCT (PL_main_cv == Nullcv)	107	#define IN_DESTRUCT (PL_main_cv == Nullcv)
81		108
82	#if __GNUC__ >= 3	109	#if __GNUC__ >= 3
83	# define attribute(x) __attribute__(x)	110	# define attribute(x) __attribute__(x)
		111	# define BARRIER __asm__ __volatile__ ("" : : : "memory")
		112	# define expect(expr,value) __builtin_expect ((expr),(value))
84	#else	113	#else
85	# define attribute(x)	114	# define attribute(x)
		115	# define BARRIER
		116	# define expect(expr,value) (expr)
86	#endif	117	#endif
		118
		119	#define expect_false(expr) expect ((expr) != 0, 0)
		120	#define expect_true(expr) expect ((expr) != 0, 1)
87		121
88	#define NOINLINE attribute ((noinline))	122	#define NOINLINE attribute ((noinline))
89		123
90	#include "CoroAPI.h"	124	#include "CoroAPI.h"
91
92	#define TRANSFER_SET_STACKLEVEL 0x8bfbfbfb /* magic cookie */
93		125
94	#ifdef USE_ITHREADS	126	#ifdef USE_ITHREADS
95	static perl_mutex coro_mutex;	127	static perl_mutex coro_mutex;
96	# define LOCK do { MUTEX_LOCK (&coro_mutex); } while (0)	128	# define LOCK do { MUTEX_LOCK (&coro_mutex); } while (0)
97	# define UNLOCK do { MUTEX_UNLOCK (&coro_mutex); } while (0)	129	# define UNLOCK do { MUTEX_UNLOCK (&coro_mutex); } while (0)
98	#else	130	#else
99	# define LOCK (void)0	131	# define LOCK (void)0
100	# define UNLOCK (void)0	132	# define UNLOCK (void)0
101	#endif	133	#endif
102		134
		135	/* 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;
103	static struct CoroAPI coroapi;	145	static struct CoroAPI coroapi;
104	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;
105	static HV coro_state_stash, coro_stash;	148	static HV coro_state_stash, coro_stash;
106	static SV coro_mortal; / will be freed after next transfer */	149	static SV coro_mortal; / will be freed after next transfer */
107		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
108	static struct coro_cctx *cctx_first;	159	static struct coro_cctx *cctx_first;
109	static int cctx_count, cctx_idle;	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	};
110		170
111	/* this is a structure representing a c-level coroutine */	171	/* this is a structure representing a c-level coroutine */
112	typedef struct coro_cctx {	172	typedef struct coro_cctx {
113	struct coro_cctx *next;	173	struct coro_cctx *next;
114		174
115	/* the stack */	175	/* the stack */
116	void *sptr;	176	void *sptr;
117	long ssize; /* positive == mmap, otherwise malloc */	177	size_t ssize;
118		178
119	/* cpu state */	179	/* cpu state */
120	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 */
121	JMPENV *top_env;	182	JMPENV *top_env;
122	coro_context cctx;	183	coro_context cctx;
123		184
124	#if USE_VALGRIND	185	#if CORO_USE_VALGRIND
125	int valgrind_id;	186	int valgrind_id;
126	#endif	187	#endif
		188	unsigned char flags;
127	} coro_cctx;	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))
128		210
129	/* this is a structure representing a perl-level coroutine */	211	/* this is a structure representing a perl-level coroutine */
130	struct coro {	212	struct coro {
131	/* the c coroutine allocated to this perl coroutine, if any */	213	/* the c coroutine allocated to this perl coroutine, if any */
132	coro_cctx *cctx;	214	coro_cctx *cctx;
133		215
		216	/* process data */
		217	AV *mainstack;
		218	perl_slots slot; / basically the saved sp */
		219
134	/* data associated with this coroutine (initial args) */	220	/* data associated with this coroutine (initial args) */
135	AV *args;	221	AV *args;
136	int refcnt;	222	int refcnt;
		223	int flags; /* CF_ flags */
137		224
138	/* optionally saved, might be zero */	225	/* statistics */
139	AV *defav;	226	int usecount; /* number of transfers to this coro */
140	SV *defsv;
141	SV *errsv;
142
143	/* saved global state not related to stacks */
144	U8 dowarn;
145	I32 in_eval;
146
147	/* the stacks and related info (callchain etc..) */
148	PERL_SI *curstackinfo;
149	AV *curstack;
150	AV *mainstack;
151	SV **stack_sp;
152	OP *op;
153	SV **curpad;
154	AV *comppad;
155	CV *compcv;
156	SV **stack_base;
157	SV **stack_max;
158	SV **tmps_stack;
159	I32 tmps_floor;
160	I32 tmps_ix;
161	I32 tmps_max;
162	I32 *markstack;
163	I32 *markstack_ptr;
164	I32 *markstack_max;
165	I32 *scopestack;
166	I32 scopestack_ix;
167	I32 scopestack_max;
168	ANY *savestack;
169	I32 savestack_ix;
170	I32 savestack_max;
171	OP **retstack;
172	I32 retstack_ix;
173	I32 retstack_max;
174	PMOP *curpm;
175	COP *curcop;
176		227
177	/* coro process data */	228	/* coro process data */
178	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 */
179	};	238	};
180		239
181	typedef struct coro *Coro__State;	240	typedef struct coro *Coro__State;
182	typedef struct coro *Coro__State_or_hashref;	241	typedef struct coro *Coro__State_or_hashref;
183		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
184	static AV *	260	static AV *
185	coro_clone_padlist (CV *cv)	261	coro_clone_padlist (pTHX_ CV *cv)
186	{	262	{
187	AV *padlist = CvPADLIST (cv);	263	AV *padlist = CvPADLIST (cv);
188	AV newpadlist, newpad;	264	AV newpadlist, newpad;
189		265
190	newpadlist = newAV ();	266	newpadlist = newAV ();
…		…
202		278
203	return newpadlist;	279	return newpadlist;
204	}	280	}
205		281
206	static void	282	static void
207	free_padlist (AV *padlist)	283	free_padlist (pTHX_ AV *padlist)
208	{	284	{
209	/* may be during global destruction */	285	/* may be during global destruction */
210	if (SvREFCNT (padlist))	286	if (SvREFCNT (padlist))
211	{	287	{
212	I32 i = AvFILLp (padlist);	288	I32 i = AvFILLp (padlist);
…		…
233	AV *padlist;	309	AV *padlist;
234	AV av = (AV )mg->mg_obj;	310	AV av = (AV )mg->mg_obj;
235		311
236	/* casting is fun. */	312	/* casting is fun. */
237	while (&PL_sv_undef != (SV )(padlist = (AV )av_pop (av)))	313	while (&PL_sv_undef != (SV )(padlist = (AV )av_pop (av)))
238	free_padlist (padlist);	314	free_padlist (aTHX_ padlist);
239		315
240	SvREFCNT_dec (av);	316	SvREFCNT_dec (av);
241		317
242	return 0;	318	return 0;
243	}	319	}
244		320
245	#define PERL_MAGIC_coro PERL_MAGIC_ext	321	#define PERL_MAGIC_coro PERL_MAGIC_ext
246		322
247	static MGVTBL vtbl_coro = {0, 0, 0, 0, coro_cv_free};	323	static MGVTBL vtbl_coro = {0, 0, 0, 0, coro_cv_free};
248		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
249	/* the next two functions merely cache the padlists */	358	/* the next two functions merely cache the padlists */
250	static void	359	static void
251	get_padlist (CV *cv)	360	get_padlist (pTHX_ CV *cv)
252	{	361	{
253	MAGIC mg = mg_find ((SV )cv, PERL_MAGIC_coro);	362	MAGIC *mg = CORO_MAGIC (cv);
		363	AV *av;
254		364
255	if (mg && AvFILLp ((AV *)mg->mg_obj) >= 0)	365	if (expect_true (mg && AvFILLp ((av = (AV *)mg->mg_obj)) >= 0))
256	CvPADLIST (cv) = (AV )av_pop ((AV )mg->mg_obj);	366	CvPADLIST (cv) = (AV *)AvARRAY (av)[AvFILLp (av)--];
257	else	367	else
258	{	368	{
259	#if 0	369	#if CORO_PREFER_PERL_FUNCTIONS
260	/* this is probably cleaner, but also slower? */	370	/* this is probably cleaner, but also slower? */
261	CV *cp = Perl_cv_clone (cv);	371	CV *cp = Perl_cv_clone (cv);
262	CvPADLIST (cv) = CvPADLIST (cp);	372	CvPADLIST (cv) = CvPADLIST (cp);
263	CvPADLIST (cp) = 0;	373	CvPADLIST (cp) = 0;
264	SvREFCNT_dec (cp);	374	SvREFCNT_dec (cp);
265	#else	375	#else
266	CvPADLIST (cv) = coro_clone_padlist (cv);	376	CvPADLIST (cv) = coro_clone_padlist (aTHX_ cv);
267	#endif	377	#endif
268	}	378	}
269	}	379	}
270		380
271	static void	381	static void
272	put_padlist (CV *cv)	382	put_padlist (pTHX_ CV *cv)
273	{	383	{
274	MAGIC mg = mg_find ((SV )cv, PERL_MAGIC_coro);	384	MAGIC *mg = CORO_MAGIC (cv);
		385	AV *av;
275		386
276	if (!mg)	387	if (expect_false (!mg))
277	{	388	{
278	sv_magic ((SV *)cv, 0, PERL_MAGIC_coro, 0, 0);	389	sv_magic ((SV *)cv, 0, PERL_MAGIC_coro, 0, 0);
279	mg = mg_find ((SV *)cv, PERL_MAGIC_coro);	390	mg = mg_find ((SV *)cv, PERL_MAGIC_coro);
280	mg->mg_virtual = &vtbl_coro;	391	mg->mg_virtual = &vtbl_coro;
281	mg->mg_obj = (SV *)newAV ();	392	mg->mg_obj = (SV *)newAV ();
282	}	393	}
283		394
284	av_push ((AV )mg->mg_obj, (SV )CvPADLIST (cv));	395	av = (AV *)mg->mg_obj;
285	}
286		396
287	#define SB do {	397	if (expect_false (AvFILLp (av) >= AvMAX (av)))
288	#define SE } while (0)	398	av_extend (av, AvMAX (av) + 1);
289		399
290	#define LOAD(state) load_state((state));	400	AvARRAY (av)[++AvFILLp (av)] = (SV *)CvPADLIST (cv);
291	#define SAVE(state,flags) save_state((state),(flags));	401	}
292		402
293	#define REPLACE_SV(sv,val) SB SvREFCNT_dec(sv); (sv) = (val); (val) = 0; SE	403	/ load & save, init *****************************************************/
294		404
295	static void	405	static void
296	load_state(Coro__State c)	406	load_perl (pTHX_ Coro__State c)
297	{	407	{
298	PL_dowarn = c->dowarn;	408	perl_slots *slot = c->slot;
299	PL_in_eval = c->in_eval;	409	c->slot = 0;
300		410
301	PL_curstackinfo = c->curstackinfo;
302	PL_curstack = c->curstack;
303	PL_mainstack = c->mainstack;	411	PL_mainstack = c->mainstack;
304	PL_stack_sp = c->stack_sp;
305	PL_op = c->op;
306	PL_curpad = c->curpad;
307	PL_comppad = c->comppad;
308	PL_compcv = c->compcv;
309	PL_stack_base = c->stack_base;
310	PL_stack_max = c->stack_max;
311	PL_tmps_stack = c->tmps_stack;
312	PL_tmps_floor = c->tmps_floor;
313	PL_tmps_ix = c->tmps_ix;
314	PL_tmps_max = c->tmps_max;
315	PL_markstack = c->markstack;
316	PL_markstack_ptr = c->markstack_ptr;
317	PL_markstack_max = c->markstack_max;
318	PL_scopestack = c->scopestack;
319	PL_scopestack_ix = c->scopestack_ix;
320	PL_scopestack_max = c->scopestack_max;
321	PL_savestack = c->savestack;
322	PL_savestack_ix = c->savestack_ix;
323	PL_savestack_max = c->savestack_max;
324	#if !PERL_VERSION_ATLEAST (5,9,0)
325	PL_retstack = c->retstack;
326	PL_retstack_ix = c->retstack_ix;
327	PL_retstack_max = c->retstack_max;
328	#endif
329	PL_curpm = c->curpm;
330	PL_curcop = c->curcop;
331		412
332	if (c->defav) REPLACE_SV (GvAV (PL_defgv), c->defav);	413	GvSV (PL_defgv) = slot->defsv;
333	if (c->defsv) REPLACE_SV (DEFSV , c->defsv);	414	GvAV (PL_defgv) = slot->defav;
334	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
335		421
336	{	422	{
337	dSP;	423	dSP;
		424
338	CV *cv;	425	CV *cv;
339		426
340	/* now do the ugly restore mess */	427	/* now do the ugly restore mess */
341	while ((cv = (CV *)POPs))	428	while (expect_true (cv = (CV *)POPs))
342	{	429	{
343	AV padlist = (AV )POPs;
344
345	if (padlist)
346	{
347	put_padlist (cv); /* mark this padlist as available */	430	put_padlist (aTHX_ cv); /* mark this padlist as available */
348	CvPADLIST(cv) = padlist;	431	CvDEPTH (cv) = PTR2IV (POPs);
349	}	432	CvPADLIST (cv) = (AV *)POPs;
350
351	++CvDEPTH(cv);
352	}	433	}
353		434
354	PUTBACK;	435	PUTBACK;
355	}	436	}
356	}	437	}
357		438
358	static void	439	static void
359	save_state(Coro__State c, int flags)	440	save_perl (pTHX_ Coro__State c)
360	{	441	{
361	{	442	{
362	dSP;	443	dSP;
363	I32 cxix = cxstack_ix;	444	I32 cxix = cxstack_ix;
364	PERL_CONTEXT *ccstk = cxstack;	445	PERL_CONTEXT *ccstk = cxstack;
…		…
367	/*	448	/*
368	* 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
369	* (and reinitialize) all cv's in the whole callchain :(	450	* (and reinitialize) all cv's in the whole callchain :(
370	*/	451	*/
371		452
372	PUSHs (Nullsv);	453	XPUSHs (Nullsv);
373	/* this loop was inspired by pp_caller */	454	/* this loop was inspired by pp_caller */
374	for (;;)	455	for (;;)
375	{	456	{
376	while (cxix >= 0)	457	while (expect_true (cxix >= 0))
377	{	458	{
378	PERL_CONTEXT *cx = &ccstk[cxix--];	459	PERL_CONTEXT *cx = &ccstk[cxix--];
379		460
380	if (CxTYPE(cx) == CXt_SUB)	461	if (expect_true (CxTYPE (cx) == CXt_SUB \|\| CxTYPE (cx) == CXt_FORMAT))
381	{	462	{
382	CV *cv = cx->blk_sub.cv;	463	CV *cv = cx->blk_sub.cv;
		464
383	if (CvDEPTH(cv))	465	if (expect_true (CvDEPTH (cv)))
384	{	466	{
385	EXTEND (SP, CvDEPTH(cv)*2);	467	EXTEND (SP, 3);
386
387	while (--CvDEPTH(cv))
388	{
389	/* this tells the restore code to increment CvDEPTH */
390	PUSHs (Nullsv);
391	PUSHs ((SV *)cv);
392	}
393
394	PUSHs ((SV *)CvPADLIST(cv));	468	PUSHs ((SV *)CvPADLIST (cv));
		469	PUSHs (INT2PTR (SV *, CvDEPTH (cv)));
395	PUSHs ((SV *)cv);	470	PUSHs ((SV *)cv);
396		471
		472	CvDEPTH (cv) = 0;
397	get_padlist (cv);	473	get_padlist (aTHX_ cv);
398	}	474	}
399	}	475	}
400	#ifdef CXt_FORMAT
401	else if (CxTYPE(cx) == CXt_FORMAT)
402	{
403	/* I never used formats, so how should I know how these are implemented? */
404	/* my bold guess is as a simple, plain sub... */
405	croak ("CXt_FORMAT not yet handled. Don't switch coroutines from within formats");
406	}
407	#endif
408	}	476	}
409		477
410	if (top_si->si_type == PERLSI_MAIN)	478	if (expect_true (top_si->si_type == PERLSI_MAIN))
411	break;	479	break;
412		480
413	top_si = top_si->si_prev;	481	top_si = top_si->si_prev;
414	ccstk = top_si->si_cxstack;	482	ccstk = top_si->si_cxstack;
415	cxix = top_si->si_cxix;	483	cxix = top_si->si_cxix;
416	}	484	}
417		485
418	PUTBACK;	486	PUTBACK;
419	}	487	}
420		488
421	c->defav = flags & TRANSFER_SAVE_DEFAV ? (AV *)SvREFCNT_inc (GvAV (PL_defgv)) : 0;	489	/* allocate some space on the context stack for our purposes */
422	c->defsv = flags & TRANSFER_SAVE_DEFSV ? SvREFCNT_inc (DEFSV) : 0;	490	{
423	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;
424		498
425	c->dowarn = PL_dowarn;	499	cxstack_ix -= SLOT_COUNT; /* undo allocation */
426	c->in_eval = PL_in_eval;	500	}
427		501
428	c->curstackinfo = PL_curstackinfo;
429	c->curstack = PL_curstack;
430	c->mainstack = PL_mainstack;	502	c->mainstack = PL_mainstack;
431	c->stack_sp = PL_stack_sp;	503
432	c->op = PL_op;	504	{
433	c->curpad = PL_curpad;	505	perl_slots slot = c->slot = (perl_slots )(cxstack + cxstack_ix + 1);
434	c->comppad = PL_comppad;	506
435	c->compcv = PL_compcv;	507	slot->defav = GvAV (PL_defgv);
436	c->stack_base = PL_stack_base;	508	slot->defsv = DEFSV;
437	c->stack_max = PL_stack_max;	509	slot->errsv = ERRSV;
438	c->tmps_stack = PL_tmps_stack;	510	slot->irsgv = GvSV (irsgv);
439	c->tmps_floor = PL_tmps_floor;	511
440	c->tmps_ix = PL_tmps_ix;	512	#define VAR(name,type) slot->name = PL_ ## name;
441	c->tmps_max = PL_tmps_max;	513	# include "state.h"
442	c->markstack = PL_markstack;	514	#undef VAR
443	c->markstack_ptr = PL_markstack_ptr;	515	}
444	c->markstack_max = PL_markstack_max;
445	c->scopestack = PL_scopestack;
446	c->scopestack_ix = PL_scopestack_ix;
447	c->scopestack_max = PL_scopestack_max;
448	c->savestack = PL_savestack;
449	c->savestack_ix = PL_savestack_ix;
450	c->savestack_max = PL_savestack_max;
451	#if !PERL_VERSION_ATLEAST (5,9,0)
452	c->retstack = PL_retstack;
453	c->retstack_ix = PL_retstack_ix;
454	c->retstack_max = PL_retstack_max;
455	#endif
456	c->curpm = PL_curpm;
457	c->curcop = PL_curcop;
458	}	516	}
459		517
460	/*	518	/*
461	* allocate various perl stacks. This is an exact copy	519	* allocate various perl stacks. This is an exact copy
462	* of perl.c:init_stacks, except that it uses less memory	520	* of perl.c:init_stacks, except that it uses less memory
463	* on the (sometimes correct) assumption that coroutines do	521	* on the (sometimes correct) assumption that coroutines do
464	* not usually need a lot of stackspace.	522	* not usually need a lot of stackspace.
465	*/	523	*/
		524	#if CORO_PREFER_PERL_FUNCTIONS
		525	# define coro_init_stacks init_stacks
		526	#else
466	static void	527	static void
467	coro_init_stacks ()	528	coro_init_stacks (pTHX)
468	{	529	{
469	PL_curstackinfo = new_stackinfo(96, 1024/sizeof(PERL_CONTEXT) - 1);	530	PL_curstackinfo = new_stackinfo(32, 8);
470	PL_curstackinfo->si_type = PERLSI_MAIN;	531	PL_curstackinfo->si_type = PERLSI_MAIN;
471	PL_curstack = PL_curstackinfo->si_stack;	532	PL_curstack = PL_curstackinfo->si_stack;
472	PL_mainstack = PL_curstack; /* remember in case we switch stacks */	533	PL_mainstack = PL_curstack; /* remember in case we switch stacks */
473		534
474	PL_stack_base = AvARRAY(PL_curstack);	535	PL_stack_base = AvARRAY(PL_curstack);
475	PL_stack_sp = PL_stack_base;	536	PL_stack_sp = PL_stack_base;
476	PL_stack_max = PL_stack_base + AvMAX(PL_curstack);	537	PL_stack_max = PL_stack_base + AvMAX(PL_curstack);
477		538
478	New(50,PL_tmps_stack,96,SV*);	539	New(50,PL_tmps_stack,32,SV*);
479	PL_tmps_floor = -1;	540	PL_tmps_floor = -1;
480	PL_tmps_ix = -1;	541	PL_tmps_ix = -1;
481	PL_tmps_max = 96;	542	PL_tmps_max = 32;
482		543
483	New(54,PL_markstack,16,I32);	544	New(54,PL_markstack,16,I32);
484	PL_markstack_ptr = PL_markstack;	545	PL_markstack_ptr = PL_markstack;
485	PL_markstack_max = PL_markstack + 16;	546	PL_markstack_max = PL_markstack + 16;
486		547
487	#ifdef SET_MARK_OFFSET	548	#ifdef SET_MARK_OFFSET
488	SET_MARK_OFFSET;	549	SET_MARK_OFFSET;
489	#endif	550	#endif
490		551
491	New(54,PL_scopestack,16,I32);	552	New(54,PL_scopestack,8,I32);
492	PL_scopestack_ix = 0;	553	PL_scopestack_ix = 0;
493	PL_scopestack_max = 16;	554	PL_scopestack_max = 8;
494		555
495	New(54,PL_savestack,96,ANY);	556	New(54,PL_savestack,24,ANY);
496	PL_savestack_ix = 0;	557	PL_savestack_ix = 0;
497	PL_savestack_max = 96;	558	PL_savestack_max = 24;
498		559
499	#if !PERL_VERSION_ATLEAST (5,9,0)	560	#if !PERL_VERSION_ATLEAST (5,9,0)
500	New(54,PL_retstack,8,OP*);	561	New(54,PL_retstack,4,OP*);
501	PL_retstack_ix = 0;	562	PL_retstack_ix = 0;
502	PL_retstack_max = 8;	563	PL_retstack_max = 4;
503	#endif	564	#endif
504	}	565	}
		566	#endif
505		567
506	/*	568	/*
507	* destroy the stacks, the callchain etc...	569	* destroy the stacks, the callchain etc...
508	*/	570	*/
509	static void	571	static void
510	coro_destroy_stacks ()	572	coro_destroy_stacks (pTHX)
511	{	573	{
512	if (!IN_DESTRUCT)
513	{
514	/* is this ugly, I ask? */
515	LEAVE_SCOPE (0);
516
517	/* sure it is, but more important: is it correct?? :/ */
518	FREETMPS;
519
520	/POPSTACK_TO (PL_mainstack);//D//use/
521	}
522
523	while (PL_curstackinfo->si_next)	574	while (PL_curstackinfo->si_next)
524	PL_curstackinfo = PL_curstackinfo->si_next;	575	PL_curstackinfo = PL_curstackinfo->si_next;
525		576
526	while (PL_curstackinfo)	577	while (PL_curstackinfo)
527	{	578	{
528	PERL_SI *p = PL_curstackinfo->si_prev;	579	PERL_SI *p = PL_curstackinfo->si_prev;
529		580
530	{ /D//remove/
531	dSP;
532	SWITCHSTACK (PL_curstack, PL_curstackinfo->si_stack);
533	PUTBACK; /* possibly superfluous */
534	}
535
536	if (!IN_DESTRUCT)	581	if (!IN_DESTRUCT)
537	{
538	dounwind (-1);/D//remove/
539	SvREFCNT_dec (PL_curstackinfo->si_stack);	582	SvREFCNT_dec (PL_curstackinfo->si_stack);
540	}
541		583
542	Safefree (PL_curstackinfo->si_cxstack);	584	Safefree (PL_curstackinfo->si_cxstack);
543	Safefree (PL_curstackinfo);	585	Safefree (PL_curstackinfo);
544	PL_curstackinfo = p;	586	PL_curstackinfo = p;
545	}	587	}
…		…
551	#if !PERL_VERSION_ATLEAST (5,9,0)	593	#if !PERL_VERSION_ATLEAST (5,9,0)
552	Safefree (PL_retstack);	594	Safefree (PL_retstack);
553	#endif	595	#endif
554	}	596	}
555		597
556	static void	598	static size_t
557	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)
558	{	639	{
559	/*	640	/*
560	* emulate part of the perl startup here.	641	* emulate part of the perl startup here.
561	*/	642	*/
562
563	coro_init_stacks ();	643	coro_init_stacks (aTHX);
564		644
		645	PL_runops = RUNOPS_DEFAULT;
		646	PL_curcop = &PL_compiling;
		647	PL_in_eval = EVAL_NULL;
565	PL_curcop = 0;	648	PL_comppad = 0;
566	PL_in_eval = 0;
567	PL_curpm = 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);
568		663
569	{	664	{
570	dSP;	665	dSP;
571	LOGOP myop;	666	LOGOP myop;
572		667
573	/* I have no idea why this is needed, but it is */
574	PUSHMARK (SP);
575
576	SvREFCNT_dec (GvAV (PL_defgv));
577	GvAV (PL_defgv) = coro->args; coro->args = 0;
578
579	Zero (&myop, 1, LOGOP);	668	Zero (&myop, 1, LOGOP);
580	myop.op_next = Nullop;	669	myop.op_next = Nullop;
581	myop.op_flags = OPf_WANT_VOID;	670	myop.op_flags = OPf_WANT_VOID;
582		671
		672	PUSHMARK (SP);
		673	XPUSHs (sv_2mortal (av_shift (GvAV (PL_defgv))));
		674	PUTBACK;
583	PL_op = (OP *)&myop;	675	PL_op = (OP *)&myop;
584
585	PUSHMARK (SP);
586	XPUSHs ((SV *)get_cv ("Coro::State::_coro_init", FALSE));
587	PUTBACK;
588	PL_op = PL_ppaddr[OP_ENTERSUB](aTHX);	676	PL_op = PL_ppaddr[OP_ENTERSUB](aTHX);
589	SPAGAIN;	677	SPAGAIN;
590
591	ENTER; /* necessary e.g. for dounwind */
592	}	678	}
593	}
594		679
		680	ENTER; /* necessary e.g. for dounwind and to balance the xsub-entersub */
		681	}
		682
595	static void	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
596	free_coro_mortal ()	720	free_coro_mortal (pTHX)
597	{	721	{
598	if (coro_mortal)	722	if (expect_true (coro_mortal))
599	{	723	{
600	SvREFCNT_dec (coro_mortal);	724	SvREFCNT_dec (coro_mortal);
601	coro_mortal = 0;	725	coro_mortal = 0;
602	}	726	}
603	}	727	}
604		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 */
605	static void NOINLINE	856	static void NOINLINE
606	prepare_cctx (coro_cctx *cctx)	857	prepare_cctx (pTHX_ coro_cctx *cctx)
607	{	858	{
608	dSP;	859	dSP;
609	LOGOP myop;	860	LOGOP myop;
610		861
		862	PL_top_env = &PL_start_env;
		863
		864	if (cctx->flags & CC_TRACE)
		865	PL_runops = runops_trace;
		866
611	Zero (&myop, 1, LOGOP);	867	Zero (&myop, 1, LOGOP);
612	myop.op_next = PL_op;	868	myop.op_next = PL_op;
613	myop.op_flags = OPf_WANT_VOID;	869	myop.op_flags = OPf_WANT_VOID \| OPf_STACKED;
614
615	sv_setiv (get_sv ("Coro::State::_cctx", FALSE), PTR2IV (cctx));
616		870
617	PUSHMARK (SP);	871	PUSHMARK (SP);
		872	EXTEND (SP, 2);
		873	PUSHs (sv_2mortal (newSViv (PTR2IV (cctx))));
618	XPUSHs ((SV *)get_cv ("Coro::State::_cctx_init", FALSE));	874	PUSHs ((SV *)get_cv ("Coro::State::_cctx_init", FALSE));
619	PUTBACK;	875	PUTBACK;
		876	PL_op = (OP *)&myop;
620	PL_restartop = PL_ppaddr[OP_ENTERSUB](aTHX);	877	PL_op = PL_ppaddr[OP_ENTERSUB](aTHX);
621	SPAGAIN;	878	SPAGAIN;
622	}	879	}
623		880
		881	/*
		882	* this is a _very_ stripped down perl interpreter ;)
		883	*/
624	static void	884	static void
625	coro_run (void *arg)	885	coro_run (void *arg)
626	{	886	{
		887	dTHX;
		888
627	/* coro_run is the alternative epilogue of transfer() */	889	/* coro_run is the alternative tail of transfer(), so unlock here. */
628	UNLOCK;	890	UNLOCK;
629		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
630	/*	902	/*
631	* 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
632	*/	908	*/
633	PL_top_env = &PL_start_env;	909	PL_top_env = main_top_env;
634		910	JMPENV_JUMP (2); /* I do not feel well about the hardcoded 2 at all */
635	/* inject call to cctx_init */
636	prepare_cctx ((coro_cctx *)arg);
637
638	/* somebody will hit me for both perl_run and PL_restartop */
639	perl_run (PL_curinterp);
640
641	fputs ("FATAL: C coroutine fell over the edge of the world, aborting. Did you call exit in a coroutine?\n", stderr);
642	abort ();
643	}	911	}
644		912
645	static coro_cctx *	913	static coro_cctx *
646	cctx_new ()	914	cctx_new ()
647	{	915	{
648	coro_cctx *cctx;	916	coro_cctx *cctx;
		917	void *stack_start;
		918	size_t stack_size;
649		919
650	++cctx_count;	920	++cctx_count;
651		921
652	New (0, cctx, 1, coro_cctx);	922	Newz (0, cctx, 1, coro_cctx);
653		923
654	#if HAVE_MMAP	924	#if HAVE_MMAP
655		925
656	cctx->ssize = ((STACKSIZE * sizeof (long) + PAGESIZE - 1) / PAGESIZE + STACKGUARD) * PAGESIZE;	926	cctx->ssize = ((coro_stacksize * sizeof (long) + PAGESIZE - 1) / PAGESIZE + CORO_STACKGUARD) * PAGESIZE;
657	/* mmap suppsedly does allocate-on-write for us */	927	/* mmap supposedly does allocate-on-write for us */
658	cctx->sptr = mmap (0, cctx->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);
659		929
660	if (cctx->sptr == (void *)-1)	930	if (cctx->sptr != (void *)-1)
661	{
662	perror ("FATAL: unable to mmap stack for coroutine");
663	_exit (EXIT_FAILURE);
664	}	931	{
665
666	# if STACKGUARD	932	# if CORO_STACKGUARD
667	mprotect (cctx->sptr, STACKGUARD * PAGESIZE, PROT_NONE);	933	mprotect (cctx->sptr, CORO_STACKGUARD * PAGESIZE, PROT_NONE);
668	# 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);
669		944
670	#else
671
672	cctx->ssize = STACKSIZE * (long)sizeof (long);
673	New (0, cctx->sptr, STACKSIZE, long);
674
675	if (!cctx->sptr)	945	if (!cctx->sptr)
676	{	946	{
677	perror ("FATAL: unable to malloc stack for coroutine");	947	perror ("FATAL: unable to allocate stack for coroutine");
678	_exit (EXIT_FAILURE);	948	_exit (EXIT_FAILURE);
679	}	949	}
680		950
681	#endif	951	stack_start = cctx->sptr;
		952	stack_size = cctx->ssize;
		953	}
682		954
683	#if USE_VALGRIND	955	REGISTER_STACK (cctx, (char )stack_start, (char )stack_start + stack_size);
684	cctx->valgrind_id = VALGRIND_STACK_REGISTER (
685	STACKGUARD * PAGESIZE + (char *)cctx->sptr,
686	cctx->ssize + (char *)cctx->sptr
687	);
688	#endif
689
690	coro_create (&cctx->cctx, coro_run, (void *)cctx, cctx->sptr, cctx->ssize);	956	coro_create (&cctx->cctx, coro_run, (void *)cctx, stack_start, stack_size);
691		957
692	return cctx;	958	return cctx;
693	}	959	}
694		960
695	static void	961	static void
696	cctx_free (coro_cctx *cctx)	962	cctx_destroy (coro_cctx *cctx)
697	{	963	{
698	if (!cctx)	964	if (!cctx)
699	return;	965	return;
700		966
701	--cctx_count;	967	--cctx_count;
702		968
703	#if USE_VALGRIND	969	#if CORO_USE_VALGRIND
704	VALGRIND_STACK_DEREGISTER (cctx->valgrind_id);	970	VALGRIND_STACK_DEREGISTER (cctx->valgrind_id);
705	#endif	971	#endif
706		972
707	#if HAVE_MMAP	973	#if HAVE_MMAP
		974	if (cctx->flags & CC_MAPPED)
708	munmap (cctx->sptr, cctx->ssize);	975	munmap (cctx->sptr, cctx->ssize);
709	#else	976	else
		977	#endif
710	Safefree (cctx->sptr);	978	Safefree (cctx->sptr);
711	#endif
712		979
713	Safefree (cctx);	980	Safefree (cctx);
714	}	981	}
715		982
		983	/* wether this cctx should be destructed */
		984	#define CCTX_EXPIRED(cctx) ((cctx)->ssize < coro_stacksize \|\| ((cctx)->flags & CC_NOREUSE))
		985
716	static coro_cctx *	986	static coro_cctx *
717	cctx_get ()	987	cctx_get (pTHX)
718	{	988	{
719	coro_cctx *cctx;	989	while (expect_true (cctx_first))
720
721	if (cctx_first)
722	{	990	{
		991	coro_cctx *cctx = cctx_first;
		992	cctx_first = cctx->next;
723	--cctx_idle;	993	--cctx_idle;
724	cctx = cctx_first;	994
725	cctx_first = cctx->next;	995	if (expect_true (!CCTX_EXPIRED (cctx)))
726	}	996	return cctx;
727	else	997
728	{	998	cctx_destroy (cctx);
729	cctx = cctx_new ();
730	PL_op = PL_op->op_next;
731	}	999	}
732		1000
733	return cctx;	1001	return cctx_new ();
734	}	1002	}
735		1003
736	static void	1004	static void
737	cctx_put (coro_cctx *cctx)	1005	cctx_put (coro_cctx *cctx)
738	{	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
739	++cctx_idle;	1017	++cctx_idle;
740	cctx->next = cctx_first;	1018	cctx->next = cctx_first;
741	cctx_first = cctx;	1019	cctx_first = cctx;
742	}	1020	}
743		1021
744	/* never call directly, always through the coro_state_transfer global variable */	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)
		1041	#else
		1042	expect_false (PL_lex_state != LEX_NOTPARSING)
		1043	#endif
		1044	)
		1045	croak ("Coro::State::transfer called while parsing, but this is not supported");
		1046	}
		1047	}
		1048
		1049	/* always use the TRANSFER macro */
745	static void NOINLINE	1050	static void NOINLINE
746	transfer (struct coro prev, struct coro next, int flags)	1051	transfer (pTHX_ struct coro prev, struct coro next)
747	{	1052	{
748	dSTACKLEVEL;	1053	dSTACKLEVEL;
749		1054
750	/* sometimes transfer is only called to set idle_sp */	1055	/* sometimes transfer is only called to set idle_sp */
751	if (flags == TRANSFER_SET_STACKLEVEL)	1056	if (expect_false (!next))
		1057	{
752	((coro_cctx *)prev)->idle_sp = STACKLEVEL;	1058	((coro_cctx *)prev)->idle_sp = STACKLEVEL;
		1059	assert (((coro_cctx )prev)->idle_te = PL_top_env); / just for the side-effect when asserts are enabled */
		1060	}
753	else if (prev != next)	1061	else if (expect_true (prev != next))
754	{	1062	{
755	coro_cctx *prev__cctx;	1063	coro_cctx *prev__cctx;
756		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;
		1075
757	LOCK;	1076	LOCK;
758		1077
759	if (next->mainstack)	1078	if (expect_false (next->flags & CF_NEW))
760	{	1079	{
761	/* coroutine already started */	1080	/* need to start coroutine */
762	SAVE (prev, flags);	1081	next->flags &= ~CF_NEW;
763	LOAD (next);	1082	/* first get rid of the old state */
		1083	save_perl (aTHX_ prev);
		1084	/* setup coroutine call */
		1085	coro_setup (aTHX_ next);
764	}	1086	}
765	else	1087	else
766	{	1088	{
767	/* need to start coroutine */	1089	/* coroutine already started */
768	/* first get rid of the old state */	1090	save_perl (aTHX_ prev);
769	SAVE (prev, -1);	1091	load_perl (aTHX_ next);
770	/* setup coroutine call */
771	setup_coro (next);
772	/* need a stack */
773	next->cctx = 0;
774	}	1092	}
775		1093
776	if (!prev->cctx)
777	/* create a new empty context */
778	Newz (0, prev->cctx, 1, coro_cctx);
779
780	prev__cctx = prev->cctx;	1094	prev__cctx = prev->cctx;
781		1095
782	/* possibly "free" the cctx */	1096	/* possibly "free" the cctx */
783	if (prev__cctx->idle_sp == STACKLEVEL)	1097	if (expect_true (prev__cctx->idle_sp == STACKLEVEL && !(prev__cctx->flags & CC_TRACE)))
784	{	1098	{
		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
		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
785	cctx_put (prev__cctx);	1109	cctx_put (prev__cctx);
786	prev->cctx = 0;
787	}	1110	}
788		1111
		1112	++next->usecount;
		1113
789	if (!next->cctx)	1114	if (expect_true (!next->cctx))
790	next->cctx = cctx_get ();	1115	next->cctx = cctx_get (aTHX);
791		1116
792	if (prev__cctx != next->cctx)	1117	if (expect_false (prev__cctx != next->cctx))
793	{	1118	{
794	prev__cctx->top_env = PL_top_env;	1119	prev__cctx->top_env = PL_top_env;
795	PL_top_env = next->cctx->top_env;	1120	PL_top_env = next->cctx->top_env;
796	coro_transfer (&prev__cctx->cctx, &next->cctx->cctx);	1121	coro_transfer (&prev__cctx->cctx, &next->cctx->cctx);
797	}	1122	}
798		1123
799	free_coro_mortal ();	1124	free_coro_mortal (aTHX);
800
801	UNLOCK;	1125	UNLOCK;
		1126
		1127	if (expect_false (prev->throw \|\| next->throw))
		1128	{
		1129	struct coro *coro = SvSTATE (coro_current);
		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	}
802	}	1139	}
803	}	1140	}
804		1141
805	struct transfer_args	1142	struct transfer_args
806	{	1143	{
807	struct coro prev, next;	1144	struct coro prev, next;
808	int flags;
809	};	1145	};
810		1146
811	#define TRANSFER(ta) 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)
812		1149
		1150	/ high level stuff ******************************************************/
		1151
813	static void	1152	static int
814	coro_state_destroy (struct coro *coro)	1153	coro_state_destroy (pTHX_ struct coro *coro)
815	{	1154	{
816	if (coro->refcnt--)	1155	if (coro->flags & CF_DESTROYED)
817	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 */
818		1170
819	if (coro->mainstack && coro->mainstack != main_mainstack)	1171	if (coro->mainstack && coro->mainstack != main_mainstack)
820	{	1172	{
821	struct coro temp;	1173	struct coro temp;
822		1174
823	SAVE ((&temp), TRANSFER_SAVE_ALL);	1175	if (coro->flags & CF_RUNNING)
824	LOAD (coro);	1176	croak ("FATAL: tried to destroy currently running coroutine");
825		1177
826	coro_destroy_stacks ();	1178	save_perl (aTHX_ &temp);
		1179	load_perl (aTHX_ coro);
827		1180
828	LOAD ((&temp)); /* this will get rid of defsv etc.. */	1181	coro_destroy (aTHX_ coro);
829		1182
		1183	load_perl (aTHX_ &temp);
		1184
830	coro->mainstack = 0;	1185	coro->slot = 0;
831	}	1186	}
832		1187
833	cctx_free (coro->cctx);	1188	cctx_destroy (coro->cctx);
834	SvREFCNT_dec (coro->args);	1189	SvREFCNT_dec (coro->args);
835	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;
836	}	1196	}
837		1197
838	static int	1198	static int
839	coro_state_clear (pTHX_ SV sv, MAGIC mg)	1199	coro_state_free (pTHX_ SV sv, MAGIC mg)
840	{	1200	{
841	struct coro coro = (struct coro )mg->mg_ptr;	1201	struct coro coro = (struct coro )mg->mg_ptr;
842	mg->mg_ptr = 0;	1202	mg->mg_ptr = 0;
843		1203
		1204	coro->hv = 0;
		1205
		1206	if (--coro->refcnt < 0)
		1207	{
844	coro_state_destroy (coro);	1208	coro_state_destroy (aTHX_ coro);
		1209	Safefree (coro);
		1210	}
845		1211
846	return 0;	1212	return 0;
847	}	1213	}
848		1214
849	static int	1215	static int
…		…
856	return 0;	1222	return 0;
857	}	1223	}
858		1224
859	static MGVTBL coro_state_vtbl = {	1225	static MGVTBL coro_state_vtbl = {
860	0, 0, 0, 0,	1226	0, 0, 0, 0,
861	coro_state_clear,	1227	coro_state_free,
862	0,	1228	0,
863	#ifdef MGf_DUP	1229	#ifdef MGf_DUP
864	coro_state_dup,	1230	coro_state_dup,
865	#else	1231	#else
866	# define MGf_DUP 0	1232	# define MGf_DUP 0
867	#endif	1233	#endif
868	};	1234	};
869		1235
870	static struct coro *
871	SvSTATE (SV *coro)
872	{
873	HV *stash;
874	MAGIC *mg;
875
876	if (SvROK (coro))
877	coro = SvRV (coro);
878
879	stash = SvSTASH (coro);
880	if (stash != coro_stash && stash != coro_state_stash)
881	{
882	/* very slow, but rare, check */
883	if (!sv_derived_from (sv_2mortal (newRV_inc (coro)), "Coro::State"))
884	croak ("Coro::State object required");
885	}
886
887	mg = SvMAGIC (coro);
888	assert (mg->mg_type == PERL_MAGIC_ext);
889	return (struct coro *)mg->mg_ptr;
890	}
891
892	static void	1236	static void
893	prepare_transfer (struct transfer_args ta, SV prev, SV *next, int flags)	1237	prepare_transfer (pTHX_ struct transfer_args ta, SV prev_sv, SV *next_sv)
894	{	1238	{
895	ta->prev = SvSTATE (prev);	1239	ta->prev = SvSTATE (prev_sv);
896	ta->next = SvSTATE (next);	1240	ta->next = SvSTATE (next_sv);
897	ta->flags = flags;	1241	TRANSFER_CHECK (*ta);
898	}	1242	}
899		1243
900	static void	1244	static void
901	api_transfer (SV prev, SV next, int flags)	1245	api_transfer (SV prev_sv, SV next_sv)
902	{	1246	{
903	dTHX;	1247	dTHX;
904	struct transfer_args ta;	1248	struct transfer_args ta;
905		1249
906	prepare_transfer (&ta, prev, next, flags);	1250	prepare_transfer (aTHX_ &ta, prev_sv, next_sv);
907	TRANSFER (ta);	1251	TRANSFER (ta);
908	}	1252	}
909		1253
910	/ Coro ******************************************************************/	1254	/ Coro ******************************************************************/
911		1255
912	#define PRIO_MAX 3
913	#define PRIO_HIGH 1
914	#define PRIO_NORMAL 0
915	#define PRIO_LOW -1
916	#define PRIO_IDLE -3
917	#define PRIO_MIN -4
918
919	/* for Coro.pm */
920	static GV coro_current, coro_idle;
921	static AV *coro_ready [PRIO_MAX-PRIO_MIN+1];
922	static int coro_nready;
923
924	static void	1256	static void
925	coro_enq (SV *sv)	1257	coro_enq (pTHX_ SV *coro_sv)
926	{	1258	{
927	int prio;
928
929	if (SvTYPE (sv) != SVt_PVHV)
930	croak ("Coro::ready tried to enqueue something that is not a coroutine");
931
932	prio = SvSTATE (sv)->prio;
933
934	av_push (coro_ready [prio - PRIO_MIN], sv);	1259	av_push (coro_ready [SvSTATE (coro_sv)->prio - PRIO_MIN], coro_sv);
935	coro_nready++;
936	}	1260	}
937		1261
938	static SV *	1262	static SV *
939	coro_deq (int min_prio)	1263	coro_deq (pTHX_ int min_prio)
940	{	1264	{
941	int prio = PRIO_MAX - PRIO_MIN;	1265	int prio = PRIO_MAX - PRIO_MIN;
942		1266
943	min_prio -= PRIO_MIN;	1267	min_prio -= PRIO_MIN;
944	if (min_prio < 0)	1268	if (min_prio < 0)
945	min_prio = 0;	1269	min_prio = 0;
946		1270
947	for (prio = PRIO_MAX - PRIO_MIN + 1; --prio >= min_prio; )	1271	for (prio = PRIO_MAX - PRIO_MIN + 1; --prio >= min_prio; )
948	if (AvFILLp (coro_ready [prio]) >= 0)	1272	if (AvFILLp (coro_ready [prio]) >= 0)
949	{
950	coro_nready--;
951	return av_shift (coro_ready [prio]);	1273	return av_shift (coro_ready [prio]);
952	}
953		1274
954	return 0;	1275	return 0;
955	}	1276	}
956		1277
957	static void	1278	static int
958	api_ready (SV *coro)	1279	api_ready (SV *coro_sv)
959	{	1280	{
960	dTHX;	1281	dTHX;
		1282	struct coro *coro;
961		1283
962	if (SvROK (coro))	1284	if (SvROK (coro_sv))
963	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;
964		1293
965	LOCK;	1294	LOCK;
966	coro_enq (SvREFCNT_inc (coro));	1295	coro_enq (aTHX_ SvREFCNT_inc (coro_sv));
		1296	++coro_nready;
967	UNLOCK;	1297	UNLOCK;
968	}
969		1298
		1299	return 1;
		1300	}
		1301
970	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
971	prepare_schedule (struct transfer_args *ta)	1310	prepare_schedule (pTHX_ struct transfer_args *ta)
972	{	1311	{
973	SV current, prev, *next;	1312	SV prev_sv, next_sv;
974
975	current = GvSV (coro_current);
976		1313
977	for (;;)	1314	for (;;)
978	{	1315	{
979	LOCK;	1316	LOCK;
980	next = coro_deq (PRIO_MIN);	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;
981	UNLOCK;	1349	UNLOCK;
982
983	if (next)
984	break;	1350	break;
985
986	{
987	dSP;
988
989	ENTER;
990	SAVETMPS;
991
992	PUSHMARK (SP);
993	PUTBACK;
994	call_sv (GvSV (coro_idle), G_DISCARD);
995
996	FREETMPS;
997	LEAVE;
998	}	1351	}
999	}
1000
1001	prev = SvRV (current);
1002	SvRV (current) = next;
1003		1352
1004	/* free this only after the transfer */	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);
		1360
1005	LOCK;	1361	LOCK;
1006	free_coro_mortal ();	1362	free_coro_mortal (aTHX);
		1363	coro_mortal = prev_sv;
1007	UNLOCK;	1364	UNLOCK;
1008	coro_mortal = prev;
1009
1010	ta->prev = SvSTATE (prev);
1011	ta->next = SvSTATE (next);
1012	ta->flags = TRANSFER_SAVE_ALL;
1013	}	1365	}
1014		1366
1015	static void	1367	static void
1016	prepare_cede (struct transfer_args *ta)	1368	prepare_cede (pTHX_ struct transfer_args *ta)
1017	{	1369	{
1018	LOCK;	1370	api_ready (coro_current);
1019	coro_enq (SvREFCNT_inc (SvRV (GvSV (coro_current))));
1020	UNLOCK;
1021
1022	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;
1023	}	1386	}
1024		1387
1025	static void	1388	static void
1026	api_schedule (void)	1389	api_schedule (void)
1027	{	1390	{
1028	dTHX;	1391	dTHX;
1029	struct transfer_args ta;	1392	struct transfer_args ta;
1030		1393
1031	prepare_schedule (&ta);	1394	prepare_schedule (aTHX_ &ta);
1032	TRANSFER (ta);	1395	TRANSFER (ta);
1033	}	1396	}
1034		1397
1035	static void	1398	static int
1036	api_cede (void)	1399	api_cede (void)
1037	{	1400	{
1038	dTHX;	1401	dTHX;
1039	struct transfer_args ta;	1402	struct transfer_args ta;
1040		1403
1041	prepare_cede (&ta);	1404	prepare_cede (aTHX_ &ta);
		1405
		1406	if (expect_true (ta.prev != ta.next))
		1407	{
1042	TRANSFER (ta);	1408	TRANSFER (ta);
		1409	return 1;
		1410	}
		1411	else
		1412	return 0;
1043	}	1413	}
1044		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
1045	MODULE = Coro::State PACKAGE = Coro::State	1456	MODULE = Coro::State PACKAGE = Coro::State PREFIX = api_
1046		1457
1047	PROTOTYPES: DISABLE	1458	PROTOTYPES: DISABLE
1048		1459
1049	BOOT:	1460	BOOT:
1050	{	1461	{
1051	#ifdef USE_ITHREADS	1462	#ifdef USE_ITHREADS
1052	MUTEX_INIT (&coro_mutex);	1463	MUTEX_INIT (&coro_mutex);
1053	#endif	1464	#endif
1054	BOOT_PAGESIZE;	1465	BOOT_PAGESIZE;
1055		1466
		1467	irsgv = gv_fetchpv ("/" , GV_ADD\|GV_NOTQUAL, SVt_PV);
		1468	stdoutgv = gv_fetchpv ("STDOUT", GV_ADD\|GV_NOTQUAL, SVt_PVIO);
		1469
1056	coro_state_stash = gv_stashpv ("Coro::State", TRUE);	1470	coro_state_stash = gv_stashpv ("Coro::State", TRUE);
1057		1471
1058	newCONSTSUB (coro_state_stash, "SAVE_DEFAV", newSViv (TRANSFER_SAVE_DEFAV));	1472	newCONSTSUB (coro_state_stash, "CC_TRACE" , newSViv (CC_TRACE));
1059	newCONSTSUB (coro_state_stash, "SAVE_DEFSV", newSViv (TRANSFER_SAVE_DEFSV));	1473	newCONSTSUB (coro_state_stash, "CC_TRACE_SUB" , newSViv (CC_TRACE_SUB));
1060	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));
1061		1476
1062	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;
1063		1482
1064	coroapi.ver = CORO_API_VERSION;	1483	coroapi.ver = CORO_API_VERSION;
1065	coroapi.transfer = api_transfer;	1484	coroapi.transfer = api_transfer;
1066		1485
1067	assert (("PRIO_NORMAL must be 0", !PRIO_NORMAL));	1486	assert (("PRIO_NORMAL must be 0", !PRIO_NORMAL));
…		…
1074	struct coro *coro;	1493	struct coro *coro;
1075	HV *hv;	1494	HV *hv;
1076	int i;	1495	int i;
1077		1496
1078	Newz (0, coro, 1, struct coro);	1497	Newz (0, coro, 1, struct coro);
1079	coro->args = newAV ();	1498	coro->args = newAV ();
		1499	coro->flags = CF_NEW;
1080		1500
		1501	if (coro_first) coro_first->prev = coro;
		1502	coro->next = coro_first;
		1503	coro_first = coro;
		1504
1081	hv = newHV ();	1505	coro->hv = hv = newHV ();
1082	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;
1083	RETVAL = sv_bless (newRV_noinc ((SV *)hv), gv_stashpv (klass, 1));	1507	RETVAL = sv_bless (newRV_noinc ((SV *)hv), gv_stashpv (klass, 1));
1084		1508
		1509	av_extend (coro->args, items - 1);
1085	for (i = 1; i < items; i++)	1510	for (i = 1; i < items; i++)
1086	av_push (coro->args, newSVsv (ST (i)));	1511	av_push (coro->args, newSVsv (ST (i)));
1087	}	1512	}
1088	OUTPUT:	1513	OUTPUT:
1089	RETVAL	1514	RETVAL
1090		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
1091	void	1519	void
1092	_set_stacklevel (...)	1520	_set_stacklevel (...)
1093	ALIAS:	1521	ALIAS:
1094	Coro::State::transfer = 1	1522	Coro::State::transfer = 1
1095	Coro::schedule = 2	1523	Coro::schedule = 2
1096	Coro::cede = 3	1524	Coro::cede = 3
1097	Coro::Cont::yield = 4	1525	Coro::cede_notself = 4
1098	CODE:	1526	CODE:
1099	{	1527	{
1100	struct transfer_args ta;	1528	struct transfer_args ta;
1101		1529
1102	switch (ix)	1530	switch (ix)
1103	{	1531	{
1104	case 0:	1532	case 0:
1105	ta.prev = (struct coro )INT2PTR (coro_cctx , SvIV (ST (0)));	1533	ta.prev = (struct coro )INT2PTR (coro_cctx , SvIV (ST (0)));
1106	ta.next = 0;	1534	ta.next = 0;
1107	ta.flags = TRANSFER_SET_STACKLEVEL;
1108	break;	1535	break;
1109		1536
1110	case 1:	1537	case 1:
1111	if (items != 3)	1538	if (items != 2)
1112	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);
1113		1540
1114	prepare_transfer (&ta, ST (0), ST (1), SvIV (ST (2)));	1541	prepare_transfer (aTHX_ &ta, ST (0), ST (1));
1115	break;	1542	break;
1116		1543
1117	case 2:	1544	case 2:
1118	prepare_schedule (&ta);	1545	prepare_schedule (aTHX_ &ta);
1119	break;	1546	break;
1120		1547
1121	case 3:	1548	case 3:
1122	prepare_cede (&ta);	1549	prepare_cede (aTHX_ &ta);
1123	break;	1550	break;
1124		1551
1125	case 4:	1552	case 4:
1126	{	1553	if (!prepare_cede_notself (aTHX_ &ta))
1127	SV *yieldstack;	1554	XSRETURN_EMPTY;
1128	SV *sv;
1129	AV *defav = GvAV (PL_defgv);
1130		1555
1131	yieldstack = *hv_fetch (
1132	(HV *)SvRV (GvSV (coro_current)),
1133	"yieldstack", sizeof ("yieldstack") - 1,
1134	0
1135	);
1136
1137	/* set up @_ -- ugly */
1138	av_clear (defav);
1139	av_fill (defav, items - 1);
1140	while (items--)
1141	av_store (defav, items, SvREFCNT_inc (ST(items)));
1142
1143	sv = av_pop ((AV *)SvRV (yieldstack));
1144	ta.prev = SvSTATE (av_fetch ((AV )SvRV (sv), 0, 0));
1145	ta.next = SvSTATE (av_fetch ((AV )SvRV (sv), 1, 0));
1146	ta.flags = 0;
1147	SvREFCNT_dec (sv);
1148	}
1149	break;	1556	break;
1150
1151	}	1557	}
1152		1558
		1559	BARRIER;
1153	TRANSFER (ta);	1560	TRANSFER (ta);
1154	}
1155		1561
1156	void	1562	if (expect_false (GIMME_V != G_VOID && ta.next != ta.prev))
1157	_clone_state_from (SV dst, SV src)	1563	XSRETURN_YES;
		1564	}
		1565
		1566	bool
		1567	_destroy (SV *coro_sv)
1158	CODE:	1568	CODE:
1159	{	1569	RETVAL = coro_state_destroy (aTHX_ SvSTATE (coro_sv));
1160	struct coro *coro_src = SvSTATE (src);	1570	OUTPUT:
1161		1571	RETVAL
1162	sv_unmagic (SvRV (dst), PERL_MAGIC_ext);
1163
1164	++coro_src->refcnt;
1165	sv_magicext (SvRV (dst), 0, PERL_MAGIC_ext, &coro_state_vtbl, (char *)coro_src, 0)->mg_flags \|= MGf_DUP;
1166	}
1167		1572
1168	void	1573	void
1169	_exit (code)	1574	_exit (code)
1170	int code	1575	int code
1171	PROTOTYPE: $	1576	PROTOTYPE: $
1172	CODE:	1577	CODE:
1173	_exit (code);	1578	_exit (code);
1174		1579
1175	int	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
1176	cctx_count ()	1590	cctx_count ()
1177	CODE:	1591	CODE:
1178	RETVAL = cctx_count;	1592	RETVAL = cctx_count;
1179	OUTPUT:	1593	OUTPUT:
1180	RETVAL	1594	RETVAL
…		…
1184	CODE:	1598	CODE:
1185	RETVAL = cctx_idle;	1599	RETVAL = cctx_idle;
1186	OUTPUT:	1600	OUTPUT:
1187	RETVAL	1601	RETVAL
1188		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
1189	MODULE = Coro::State PACKAGE = Coro	1702	MODULE = Coro::State PACKAGE = Coro
1190		1703
1191	BOOT:	1704	BOOT:
1192	{	1705	{
1193	int i;	1706	int i;
1194		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
1195	coro_stash = gv_stashpv ("Coro", TRUE);	1718	coro_stash = gv_stashpv ("Coro", TRUE);
1196		1719
1197	newCONSTSUB (coro_stash, "PRIO_MAX", newSViv (PRIO_MAX));	1720	newCONSTSUB (coro_stash, "PRIO_MAX", newSViv (PRIO_MAX));
1198	newCONSTSUB (coro_stash, "PRIO_HIGH", newSViv (PRIO_HIGH));	1721	newCONSTSUB (coro_stash, "PRIO_HIGH", newSViv (PRIO_HIGH));
1199	newCONSTSUB (coro_stash, "PRIO_NORMAL", newSViv (PRIO_NORMAL));	1722	newCONSTSUB (coro_stash, "PRIO_NORMAL", newSViv (PRIO_NORMAL));
1200	newCONSTSUB (coro_stash, "PRIO_LOW", newSViv (PRIO_LOW));	1723	newCONSTSUB (coro_stash, "PRIO_LOW", newSViv (PRIO_LOW));
1201	newCONSTSUB (coro_stash, "PRIO_IDLE", newSViv (PRIO_IDLE));	1724	newCONSTSUB (coro_stash, "PRIO_IDLE", newSViv (PRIO_IDLE));
1202	newCONSTSUB (coro_stash, "PRIO_MIN", newSViv (PRIO_MIN));	1725	newCONSTSUB (coro_stash, "PRIO_MIN", newSViv (PRIO_MIN));
1203		1726
1204	coro_current = gv_fetchpv ("Coro::current", TRUE, SVt_PV);
1205	coro_idle = gv_fetchpv ("Coro::idle" , TRUE, SVt_PV);
1206
1207	for (i = PRIO_MAX - PRIO_MIN + 1; i--; )	1727	for (i = PRIO_MAX - PRIO_MIN + 1; i--; )
1208	coro_ready[i] = newAV ();	1728	coro_ready[i] = newAV ();
1209		1729
1210	{	1730	{
1211	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 */
1212		1733
1213	coroapi.schedule = api_schedule;	1734	coroapi.schedule = api_schedule;
1214	coroapi.cede = api_cede;	1735	coroapi.cede = api_cede;
		1736	coroapi.cede_notself = api_cede_notself;
1215	coroapi.ready = api_ready;	1737	coroapi.ready = api_ready;
		1738	coroapi.is_ready = api_is_ready;
1216	coroapi.nready = &coro_nready;	1739	coroapi.nready = &coro_nready;
1217	coroapi.current = coro_current;	1740	coroapi.current = coro_current;
1218		1741
1219	GCoroAPI = &coroapi;	1742	GCoroAPI = &coroapi;
1220	sv_setiv (sv, (IV)&coroapi);	1743	sv_setiv (sv, (IV)&coroapi);
1221	SvREADONLY_on (sv);	1744	SvREADONLY_on (sv);
1222	}	1745	}
1223	}	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)));
1224		1754
1225	int	1755	int
1226	prio (Coro::State coro, int newprio = 0)	1756	prio (Coro::State coro, int newprio = 0)
1227	ALIAS:	1757	ALIAS:
1228	nice = 1	1758	nice = 1
…		…
1231	RETVAL = coro->prio;	1761	RETVAL = coro->prio;
1232		1762
1233	if (items > 1)	1763	if (items > 1)
1234	{	1764	{
1235	if (ix)	1765	if (ix)
1236	newprio += coro->prio;	1766	newprio = coro->prio - newprio;
1237		1767
1238	if (newprio < PRIO_MIN) newprio = PRIO_MIN;	1768	if (newprio < PRIO_MIN) newprio = PRIO_MIN;
1239	if (newprio > PRIO_MAX) newprio = PRIO_MAX;	1769	if (newprio > PRIO_MAX) newprio = PRIO_MAX;
1240		1770
1241	coro->prio = newprio;	1771	coro->prio = newprio;
1242	}	1772	}
1243	}	1773	}
		1774	OUTPUT:
		1775	RETVAL
1244		1776
1245	void	1777	SV *
1246	ready (SV *self)	1778	ready (SV *self)
1247	PROTOTYPE: $	1779	PROTOTYPE: $
1248	CODE:	1780	CODE:
1249	api_ready (self);	1781	RETVAL = boolSV (api_ready (self));
		1782	OUTPUT:
		1783	RETVAL
1250		1784
1251	int	1785	int
1252	nready (...)	1786	nready (...)
1253	PROTOTYPE:	1787	PROTOTYPE:
1254	CODE:	1788	CODE:
1255	RETVAL = coro_nready;	1789	RETVAL = coro_nready;
1256	OUTPUT:	1790	OUTPUT:
1257	RETVAL	1791	RETVAL
1258		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
1259	MODULE = Coro::State PACKAGE = Coro::AIO	1864	MODULE = Coro::State PACKAGE = Coro::AIO
1260		1865
1261	SV *	1866	SV *
1262	_get_state ()	1867	_get_state ()
1263	CODE:	1868	CODE:
1264	{	1869	{
1265	struct {	1870	struct io_state *data;
1266	int errorno;
1267	int laststype;
1268	int laststatval;
1269	Stat_t statcache;
1270	} data;
1271		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
1272	data.errorno = errno;	1877	data->errorno = errno;
1273	data.laststype = PL_laststype;	1878	data->laststype = PL_laststype;
1274	data.laststatval = PL_laststatval;	1879	data->laststatval = PL_laststatval;
1275	data.statcache = PL_statcache;	1880	data->statcache = PL_statcache;
1276
1277	RETVAL = newSVpvn ((char *)&data, sizeof data);
1278	}	1881	}
1279	OUTPUT:	1882	OUTPUT:
1280	RETVAL	1883	RETVAL
1281		1884
1282	void	1885	void
1283	_set_state (char *data_)	1886	_set_state (char *data_)
1284	PROTOTYPE: $	1887	PROTOTYPE: $
1285	CODE:	1888	CODE:
1286	{	1889	{
1287	struct {	1890	struct io_state data = (void )data_;
1288	int errorno;
1289	int laststype;
1290	int laststatval;
1291	Stat_t statcache;
1292	} data = (void )data_;
1293		1891
1294	errno = data->errorno;	1892	errno = data->errorno;
1295	PL_laststype = data->laststype;	1893	PL_laststype = data->laststype;
1296	PL_laststatval = data->laststatval;	1894	PL_laststatval = data->laststatval;
1297	PL_statcache = data->statcache;	1895	PL_statcache = data->statcache;
1298	}	1896	}
		1897

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Comparing Coro/Coro/State.xs (file contents): Revision 1.107 by root, Mon Nov 27 02:15:51 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 1.107 by root, Mon Nov 27 02:15:51 2006 UTC vs.
Revision 1.198 by root, Sun Oct 7 03:58:37 2007 UTC