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

Comparing Coro/Coro/State.xs (file contents):
Revision 1.99 by root, Sun Nov 26 23:53:20 2006 UTC vs.
Revision 1.147 by root, Mon Mar 19 15:50:48 2007 UTC

…		…
1	#include "libcoro/coro.c"	1	#include "libcoro/coro.c"
		2
		3	#define PERL_NO_GET_CONTEXT
2		4
3	#include "EXTERN.h"	5	#include "EXTERN.h"
4	#include "perl.h"	6	#include "perl.h"
5	#include "XSUB.h"	7	#include "XSUB.h"
6		8
7	#include "patchlevel.h"	9	#include "patchlevel.h"
8		10
9	#if PERL_VERSION < 6	11	#include <stdio.h>
		12	#include <errno.h>
		13	#include <assert.h>
		14
		15	#ifdef HAVE_MMAP
		16	# include <unistd.h>
		17	# include <sys/mman.h>
		18	# ifndef MAP_ANONYMOUS
		19	# ifdef MAP_ANON
		20	# define MAP_ANONYMOUS MAP_ANON
		21	# else
		22	# undef HAVE_MMAP
		23	# endif
		24	# endif
		25	# include <limits.h>
		26	# ifndef PAGESIZE
		27	# define PAGESIZE pagesize
		28	# define BOOT_PAGESIZE pagesize = sysconf (_SC_PAGESIZE)
		29	static long pagesize;
		30	# else
		31	# define BOOT_PAGESIZE (void)0
		32	# endif
		33	#else
		34	# define PAGESIZE 0
		35	# define BOOT_PAGESIZE (void)0
		36	#endif
		37
		38	#if CORO_USE_VALGRIND
		39	# include <valgrind/valgrind.h>
		40	# define REGISTER_STACK(cctx,start,end) (cctx)->valgrind_id = VALGRIND_STACK_REGISTER ((start), (end))
		41	#else
		42	# define REGISTER_STACK(cctx,start,end)
		43	#endif
		44
		45	/* the maximum number of idle cctx that will be pooled */
		46	#define MAX_IDLE_CCTX 8
		47
		48	#define PERL_VERSION_ATLEAST(a,b,c) \
		49	(PERL_REVISION > (a) \
		50	\|\| (PERL_REVISION == (a) \
		51	&& (PERL_VERSION > (b) \
		52	\|\| (PERL_VERSION == (b) && PERLSUBVERSION >= (c)))))
		53
		54	#if !PERL_VERSION_ATLEAST (5,6,0)
10	# ifndef PL_ppaddr	55	# ifndef PL_ppaddr
11	# define PL_ppaddr ppaddr	56	# define PL_ppaddr ppaddr
12	# endif	57	# endif
13	# ifndef call_sv	58	# ifndef call_sv
14	# define call_sv perl_call_sv	59	# define call_sv perl_call_sv
25	# ifndef IS_PADCONST	70	# ifndef IS_PADCONST
26	# define IS_PADCONST(v) 0	71	# define IS_PADCONST(v) 0
27	# endif	72	# endif
28	#endif	73	#endif
29		74
30	#include <stdio.h>	75	/* 5.8.7 */
31	#include <errno.h>	76	#ifndef SvRV_set
		77	# define SvRV_set(s,v) SvRV(s) = (v)
		78	#endif
32		79
33	#if !__i386 && !__x86_64 && !__powerpc && !__m68k && !__alpha && !__mips && !__sparc64	80	#if !__i386 && !__x86_64 && !__powerpc && !__m68k && !__alpha && !__mips && !__sparc64
34	# undef STACKGUARD	81	# undef CORO_STACKGUARD
35	#endif
36
37	#ifndef STACKGUARD
38	# define STACKGUARD 0
39	#endif
40
41	#ifdef HAVE_MMAP
42	# include <unistd.h>
43	# include <sys/mman.h>
44	# ifndef MAP_ANONYMOUS
45	# ifdef MAP_ANON
46	# define MAP_ANONYMOUS MAP_ANON
47	# else
48	# undef HAVE_MMAP
49	# endif
50	# endif	82	#endif
51	# include <limits.h>	83
52	# ifndef PAGESIZE	84	#ifndef CORO_STACKGUARD
53	# define PAGESIZE pagesize	85	# define CORO_STACKGUARD 0
54	# define BOOT_PAGESIZE pagesize = sysconf (_SC_PAGESIZE)
55	static long pagesize;
56	# else
57	# define BOOT_PAGESIZE
58	# endif	86	#endif
		87
		88	/* prefer perl internal functions over our own? */
		89	#ifndef CORO_PREFER_PERL_FUNCTIONS
		90	# define CORO_PREFER_PERL_FUNCTIONS 0
59	#endif	91	#endif
60		92
61	/* The next macro should declare a variable stacklevel that contains and approximation	93	/* The next macro should declare a variable stacklevel that contains and approximation
62	* to the current C stack pointer. Its property is that it changes with each call	94	* to the current C stack pointer. Its property is that it changes with each call
63	* and should be unique. */	95	* and should be unique. */
64	#define dSTACKLEVEL int stacklevel	96	#define dSTACKLEVEL int stacklevel
65	#define STACKLEVEL ((void *)&stacklevel)	97	#define STACKLEVEL ((void *)&stacklevel)
66		98
67	#define IN_DESTRUCT (PL_main_cv == Nullcv)	99	#define IN_DESTRUCT (PL_main_cv == Nullcv)
68		100
		101	#if __GNUC__ >= 3
		102	# define attribute(x) __attribute__(x)
		103	# define BARRIER __asm__ __volatile__ ("" : : : "memory")
		104	#else
		105	# define attribute(x)
		106	# define BARRIER
		107	#endif
		108
		109	#define NOINLINE attribute ((noinline))
		110
69	#include "CoroAPI.h"	111	#include "CoroAPI.h"
70
71	#define TRANSFER_SET_STACKLEVEL 0x8bfbfbfb /* magic cookie */
72		112
73	#ifdef USE_ITHREADS	113	#ifdef USE_ITHREADS
74	static perl_mutex coro_mutex;	114	static perl_mutex coro_mutex;
75	# define LOCK do { MUTEX_LOCK (&coro_mutex); } while (0)	115	# define LOCK do { MUTEX_LOCK (&coro_mutex); } while (0)
76	# define UNLOCK do { MUTEX_UNLOCK (&coro_mutex); } while (0)	116	# define UNLOCK do { MUTEX_UNLOCK (&coro_mutex); } while (0)
77	#else	117	#else
78	# define LOCK (void)0	118	# define LOCK (void)0
79	# define UNLOCK (void)0	119	# define UNLOCK (void)0
80	#endif	120	#endif
81		121
		122	/* helper storage struct for Coro::AIO */
		123	struct io_state
		124	{
		125	int errorno;
		126	I32 laststype;
		127	int laststatval;
		128	Stat_t statcache;
		129	};
		130
		131	static size_t coro_stacksize = CORO_STACKSIZE;
82	static struct CoroAPI coroapi;	132	static struct CoroAPI coroapi;
83	static AV main_mainstack; / used to differentiate between $main and others */	133	static AV main_mainstack; / used to differentiate between $main and others */
84	static HV coro_state_stash, coro_stash;	134	static HV coro_state_stash, coro_stash;
85	static SV coro_mortal; / will be freed after next transfer */	135	static SV coro_mortal; / will be freed after next transfer */
86		136
		137	static struct coro_cctx *cctx_first;
		138	static int cctx_count, cctx_idle;
		139
87	/* this is a structure representing a c-level coroutine */	140	/* this is a structure representing a c-level coroutine */
88	typedef struct coro_stack {	141	typedef struct coro_cctx {
89	struct coro_stack *next;	142	struct coro_cctx *next;
90		143
91	/* the stack */	144	/* the stack */
92	void *sptr;	145	void *sptr;
93	long ssize; /* positive == mmap, otherwise malloc */	146	size_t ssize;
94		147
95	/* cpu state */	148	/* cpu state */
96	void idle_sp; / sp of top-level transfer/schedule/cede call */	149	void idle_sp; / sp of top-level transfer/schedule/cede call */
		150	JMPENV idle_te; / same as idle_sp, but for top_env, TODO: remove once stable */
97	JMPENV *top_env;	151	JMPENV *top_env;
98	coro_context cctx;	152	coro_context cctx;
99	} coro_stack;	153
		154	#if CORO_USE_VALGRIND
		155	int valgrind_id;
		156	#endif
		157	char inuse, mapped;
		158	} coro_cctx;
		159
		160	enum {
		161	CF_RUNNING = 0x0001, /* coroutine is running */
		162	CF_READY = 0x0002, /* coroutine is ready */
		163	CF_NEW = 0x0004, /* has never been switched to */
		164	CF_DESTROYED = 0x0008, /* coroutine data has been freed */
		165	};
100		166
101	/* this is a structure representing a perl-level coroutine */	167	/* this is a structure representing a perl-level coroutine */
102	struct coro {	168	struct coro {
103	/* the c coroutine allocated to this perl coroutine, if any */	169	/* the c coroutine allocated to this perl coroutine, if any */
104	coro_stack *stack;	170	coro_cctx *cctx;
105		171
106	/* data associated with this coroutine (initial args) */	172	/* data associated with this coroutine (initial args) */
107	AV *args;	173	AV *args;
108	int refcnt;	174	int refcnt;
		175	int save; /* CORO_SAVE flags */
		176	int flags; /* CF_ flags */
109		177
110	/* optionally saved, might be zero */	178	/* optionally saved, might be zero */
111	AV *defav;	179	AV defav; / @_ */
112	SV *defsv;	180	SV defsv; / $_ */
113	SV *errsv;	181	SV errsv; / $@ */
		182	GV deffh; / default filehandle */
		183	SV irssv; / $/ */
		184	SV irssv_sv; / real $/ cache */
114		185
115	/* saved global state not related to stacks */	186	#define VAR(name,type) type name;
116	U8 dowarn;	187	# include "state.h"
117	I32 in_eval;	188	#undef VAR
118
119	/* the stacks and related info (callchain etc..) */
120	PERL_SI *curstackinfo;
121	AV *curstack;
122	AV *mainstack;
123	SV **stack_sp;
124	OP *op;
125	SV **curpad;
126	AV *comppad;
127	CV *compcv;
128	SV **stack_base;
129	SV **stack_max;
130	SV **tmps_stack;
131	I32 tmps_floor;
132	I32 tmps_ix;
133	I32 tmps_max;
134	I32 *markstack;
135	I32 *markstack_ptr;
136	I32 *markstack_max;
137	I32 *scopestack;
138	I32 scopestack_ix;
139	I32 scopestack_max;
140	ANY *savestack;
141	I32 savestack_ix;
142	I32 savestack_max;
143	OP **retstack;
144	I32 retstack_ix;
145	I32 retstack_max;
146	PMOP *curpm;
147	COP *curcop;
148		189
149	/* coro process data */	190	/* coro process data */
150	int prio;	191	int prio;
151	};	192	};
152		193
153	typedef struct coro *Coro__State;	194	typedef struct coro *Coro__State;
154	typedef struct coro *Coro__State_or_hashref;	195	typedef struct coro *Coro__State_or_hashref;
155		196
		197	/ Coro ******************************************************************/
		198
		199	#define PRIO_MAX 3
		200	#define PRIO_HIGH 1
		201	#define PRIO_NORMAL 0
		202	#define PRIO_LOW -1
		203	#define PRIO_IDLE -3
		204	#define PRIO_MIN -4
		205
		206	/* for Coro.pm */
		207	static SV *coro_current;
		208	static AV *coro_ready [PRIO_MAX-PRIO_MIN+1];
		209	static int coro_nready;
		210
		211	/ lowlevel stuff ********************************************************/
		212
156	static AV *	213	static AV *
157	coro_clone_padlist (CV *cv)	214	coro_clone_padlist (pTHX_ CV *cv)
158	{	215	{
159	AV *padlist = CvPADLIST (cv);	216	AV *padlist = CvPADLIST (cv);
160	AV newpadlist, newpad;	217	AV newpadlist, newpad;
161		218
162	newpadlist = newAV ();	219	newpadlist = newAV ();
163	AvREAL_off (newpadlist);	220	AvREAL_off (newpadlist);
164	#if PERL_VERSION < 9	221	#if PERL_VERSION_ATLEAST (5,9,0)
		222	Perl_pad_push (aTHX_ padlist, AvFILLp (padlist) + 1);
		223	#else
165	Perl_pad_push (aTHX_ padlist, AvFILLp (padlist) + 1, 1);	224	Perl_pad_push (aTHX_ padlist, AvFILLp (padlist) + 1, 1);
166	#else
167	Perl_pad_push (aTHX_ padlist, AvFILLp (padlist) + 1);
168	#endif	225	#endif
169	newpad = (AV *)AvARRAY (padlist)[AvFILLp (padlist)];	226	newpad = (AV *)AvARRAY (padlist)[AvFILLp (padlist)];
170	--AvFILLp (padlist);	227	--AvFILLp (padlist);
171		228
172	av_store (newpadlist, 0, SvREFCNT_inc (*av_fetch (padlist, 0, FALSE)));	229	av_store (newpadlist, 0, SvREFCNT_inc (*av_fetch (padlist, 0, FALSE)));
…		…
174		231
175	return newpadlist;	232	return newpadlist;
176	}	233	}
177		234
178	static void	235	static void
179	free_padlist (AV *padlist)	236	free_padlist (pTHX_ AV *padlist)
180	{	237	{
181	/* may be during global destruction */	238	/* may be during global destruction */
182	if (SvREFCNT (padlist))	239	if (SvREFCNT (padlist))
183	{	240	{
184	I32 i = AvFILLp (padlist);	241	I32 i = AvFILLp (padlist);
…		…
205	AV *padlist;	262	AV *padlist;
206	AV av = (AV )mg->mg_obj;	263	AV av = (AV )mg->mg_obj;
207		264
208	/* casting is fun. */	265	/* casting is fun. */
209	while (&PL_sv_undef != (SV )(padlist = (AV )av_pop (av)))	266	while (&PL_sv_undef != (SV )(padlist = (AV )av_pop (av)))
210	free_padlist (padlist);	267	free_padlist (aTHX_ padlist);
211		268
212	SvREFCNT_dec (av);	269	SvREFCNT_dec (av);
213		270
214	return 0;	271	return 0;
215	}	272	}
216		273
217	#define PERL_MAGIC_coro PERL_MAGIC_ext	274	#define PERL_MAGIC_coro PERL_MAGIC_ext
218		275
219	static MGVTBL vtbl_coro = {0, 0, 0, 0, coro_cv_free};	276	static MGVTBL vtbl_coro = {0, 0, 0, 0, coro_cv_free};
220		277
		278	#define CORO_MAGIC(cv) \
		279	SvMAGIC (cv) \
		280	? SvMAGIC (cv)->mg_type == PERL_MAGIC_coro \
		281	? SvMAGIC (cv) \
		282	: mg_find ((SV *)cv, PERL_MAGIC_coro) \
		283	: 0
		284
221	/* the next two functions merely cache the padlists */	285	/* the next two functions merely cache the padlists */
222	static void	286	static void
223	get_padlist (CV *cv)	287	get_padlist (pTHX_ CV *cv)
224	{	288	{
225	MAGIC mg = mg_find ((SV )cv, PERL_MAGIC_coro);	289	MAGIC *mg = CORO_MAGIC (cv);
		290	AV *av;
226		291
227	if (mg && AvFILLp ((AV *)mg->mg_obj) >= 0)	292	if (mg && AvFILLp ((av = (AV *)mg->mg_obj)) >= 0)
228	CvPADLIST (cv) = (AV )av_pop ((AV )mg->mg_obj);	293	CvPADLIST (cv) = (AV *)AvARRAY (av)[AvFILLp (av)--];
229	else	294	else
230	{	295	{
231	#if 0	296	#if CORO_PREFER_PERL_FUNCTIONS
232	/* this is probably cleaner, but also slower? */	297	/* this is probably cleaner, but also slower? */
233	CV *cp = Perl_cv_clone (cv);	298	CV *cp = Perl_cv_clone (cv);
234	CvPADLIST (cv) = CvPADLIST (cp);	299	CvPADLIST (cv) = CvPADLIST (cp);
235	CvPADLIST (cp) = 0;	300	CvPADLIST (cp) = 0;
236	SvREFCNT_dec (cp);	301	SvREFCNT_dec (cp);
237	#else	302	#else
238	CvPADLIST (cv) = coro_clone_padlist (cv);	303	CvPADLIST (cv) = coro_clone_padlist (aTHX_ cv);
239	#endif	304	#endif
240	}	305	}
241	}	306	}
242		307
243	static void	308	static void
244	put_padlist (CV *cv)	309	put_padlist (pTHX_ CV *cv)
245	{	310	{
246	MAGIC mg = mg_find ((SV )cv, PERL_MAGIC_coro);	311	MAGIC *mg = CORO_MAGIC (cv);
		312	AV *av;
247		313
248	if (!mg)	314	if (!mg)
249	{	315	{
250	sv_magic ((SV *)cv, 0, PERL_MAGIC_coro, 0, 0);	316	sv_magic ((SV *)cv, 0, PERL_MAGIC_coro, 0, 0);
251	mg = mg_find ((SV *)cv, PERL_MAGIC_coro);	317	mg = mg_find ((SV *)cv, PERL_MAGIC_coro);
252	mg->mg_virtual = &vtbl_coro;	318	mg->mg_virtual = &vtbl_coro;
253	mg->mg_obj = (SV *)newAV ();	319	mg->mg_obj = (SV *)newAV ();
254	}	320	}
255		321
256	av_push ((AV )mg->mg_obj, (SV )CvPADLIST (cv));	322	av = (AV *)mg->mg_obj;
		323
		324	if (AvFILLp (av) >= AvMAX (av))
		325	av_extend (av, AvMAX (av) + 1);
		326
		327	AvARRAY (av)[++AvFILLp (av)] = (SV *)CvPADLIST (cv);
257	}	328	}
		329
		330	/ load & save, init *****************************************************/
258		331
259	#define SB do {	332	#define SB do {
260	#define SE } while (0)	333	#define SE } while (0)
261		334
262	#define LOAD(state) load_state((state));
263	#define SAVE(state,flags) save_state((state),(flags));
264
265	#define REPLACE_SV(sv,val) SB SvREFCNT_dec(sv); (sv) = (val); (val) = 0; SE	335	#define REPLACE_SV(sv,val) SB SvREFCNT_dec (sv); (sv) = (val); (val) = 0; SE
266		336
267	static void	337	static void
268	load_state(Coro__State c)	338	load_perl (pTHX_ Coro__State c)
269	{	339	{
270	PL_dowarn = c->dowarn;	340	#define VAR(name,type) PL_ ## name = c->name;
271	PL_in_eval = c->in_eval;	341	# include "state.h"
272		342	#undef VAR
273	PL_curstackinfo = c->curstackinfo;
274	PL_curstack = c->curstack;
275	PL_mainstack = c->mainstack;
276	PL_stack_sp = c->stack_sp;
277	PL_op = c->op;
278	PL_curpad = c->curpad;
279	PL_comppad = c->comppad;
280	PL_compcv = c->compcv;
281	PL_stack_base = c->stack_base;
282	PL_stack_max = c->stack_max;
283	PL_tmps_stack = c->tmps_stack;
284	PL_tmps_floor = c->tmps_floor;
285	PL_tmps_ix = c->tmps_ix;
286	PL_tmps_max = c->tmps_max;
287	PL_markstack = c->markstack;
288	PL_markstack_ptr = c->markstack_ptr;
289	PL_markstack_max = c->markstack_max;
290	PL_scopestack = c->scopestack;
291	PL_scopestack_ix = c->scopestack_ix;
292	PL_scopestack_max = c->scopestack_max;
293	PL_savestack = c->savestack;
294	PL_savestack_ix = c->savestack_ix;
295	PL_savestack_max = c->savestack_max;
296	#if PERL_VERSION < 9
297	PL_retstack = c->retstack;
298	PL_retstack_ix = c->retstack_ix;
299	PL_retstack_max = c->retstack_max;
300	#endif
301	PL_curpm = c->curpm;
302	PL_curcop = c->curcop;
303		343
304	if (c->defav) REPLACE_SV (GvAV (PL_defgv), c->defav);	344	if (c->defav) REPLACE_SV (GvAV (PL_defgv), c->defav);
305	if (c->defsv) REPLACE_SV (DEFSV , c->defsv);	345	if (c->defsv) REPLACE_SV (DEFSV , c->defsv);
306	if (c->errsv) REPLACE_SV (ERRSV , c->errsv);	346	if (c->errsv) REPLACE_SV (ERRSV , c->errsv);
		347	if (c->deffh) REPLACE_SV (PL_defoutgv , c->deffh);
		348
		349	if (c->irssv)
		350	{
		351	if (c->irssv == PL_rs \|\| sv_eq (PL_rs, c->irssv))
		352	{
		353	SvREFCNT_dec (c->irssv);
		354	c->irssv = 0;
		355	}
		356	else
		357	{
		358	REPLACE_SV (PL_rs, c->irssv);
		359	if (!c->irssv_sv) c->irssv_sv = get_sv ("/", 0);
		360	sv_setsv (c->irssv_sv, PL_rs);
		361	}
		362	}
307		363
308	{	364	{
309	dSP;	365	dSP;
310	CV *cv;	366	CV *cv;
311		367
312	/* now do the ugly restore mess */	368	/* now do the ugly restore mess */
313	while ((cv = (CV *)POPs))	369	while ((cv = (CV *)POPs))
314	{	370	{
315	AV padlist = (AV )POPs;
316
317	if (padlist)
318	{
319	put_padlist (cv); /* mark this padlist as available */	371	put_padlist (aTHX_ cv); /* mark this padlist as available */
320	CvPADLIST(cv) = padlist;	372	CvDEPTH (cv) = PTR2IV (POPs);
321	}	373	CvPADLIST (cv) = (AV *)POPs;
322
323	++CvDEPTH(cv);
324	}	374	}
325		375
326	PUTBACK;	376	PUTBACK;
327	}	377	}
		378	assert (!PL_comppad \|\| AvARRAY (PL_comppad));//D
328	}	379	}
329		380
330	static void	381	static void
331	save_state(Coro__State c, int flags)	382	save_perl (pTHX_ Coro__State c)
332	{	383	{
		384	assert (!PL_comppad \|\| AvARRAY (PL_comppad));//D
333	{	385	{
334	dSP;	386	dSP;
335	I32 cxix = cxstack_ix;	387	I32 cxix = cxstack_ix;
336	PERL_CONTEXT *ccstk = cxstack;	388	PERL_CONTEXT *ccstk = cxstack;
337	PERL_SI *top_si = PL_curstackinfo;	389	PERL_SI *top_si = PL_curstackinfo;
…		…
339	/*	391	/*
340	* the worst thing you can imagine happens first - we have to save	392	* the worst thing you can imagine happens first - we have to save
341	* (and reinitialize) all cv's in the whole callchain :(	393	* (and reinitialize) all cv's in the whole callchain :(
342	*/	394	*/
343		395
		396	EXTEND (SP, 3 + 1);
344	PUSHs (Nullsv);	397	PUSHs (Nullsv);
345	/* this loop was inspired by pp_caller */	398	/* this loop was inspired by pp_caller */
346	for (;;)	399	for (;;)
347	{	400	{
348	while (cxix >= 0)	401	while (cxix >= 0)
349	{	402	{
350	PERL_CONTEXT *cx = &ccstk[cxix--];	403	PERL_CONTEXT *cx = &ccstk[cxix--];
351		404
352	if (CxTYPE(cx) == CXt_SUB)	405	if (CxTYPE (cx) == CXt_SUB)
353	{	406	{
354	CV *cv = cx->blk_sub.cv;	407	CV *cv = cx->blk_sub.cv;
		408
355	if (CvDEPTH(cv))	409	if (CvDEPTH (cv))
356	{	410	{
357	EXTEND (SP, CvDEPTH(cv)*2);	411	EXTEND (SP, 3);
358
359	while (--CvDEPTH(cv))
360	{
361	/* this tells the restore code to increment CvDEPTH */
362	PUSHs (Nullsv);
363	PUSHs ((SV *)cv);
364	}
365
366	PUSHs ((SV *)CvPADLIST(cv));	412	PUSHs ((SV *)CvPADLIST (cv));
		413	PUSHs (INT2PTR (SV *, CvDEPTH (cv)));
367	PUSHs ((SV *)cv);	414	PUSHs ((SV *)cv);
368		415
		416	CvDEPTH (cv) = 0;
369	get_padlist (cv);	417	get_padlist (aTHX_ cv);
370	}	418	}
371	}	419	}
372	#ifdef CXt_FORMAT
373	else if (CxTYPE(cx) == CXt_FORMAT)
374	{
375	/* I never used formats, so how should I know how these are implemented? */
376	/* my bold guess is as a simple, plain sub... */
377	croak ("CXt_FORMAT not yet handled. Don't switch coroutines from within formats");
378	}
379	#endif
380	}	420	}
381		421
382	if (top_si->si_type == PERLSI_MAIN)	422	if (top_si->si_type == PERLSI_MAIN)
383	break;	423	break;
384		424
…		…
388	}	428	}
389		429
390	PUTBACK;	430	PUTBACK;
391	}	431	}
392		432
393	c->defav = flags & TRANSFER_SAVE_DEFAV ? (AV *)SvREFCNT_inc (GvAV (PL_defgv)) : 0;	433	c->defav = c->save & CORO_SAVE_DEFAV ? (AV *)SvREFCNT_inc (GvAV (PL_defgv)) : 0;
394	c->defsv = flags & TRANSFER_SAVE_DEFSV ? SvREFCNT_inc (DEFSV) : 0;	434	c->defsv = c->save & CORO_SAVE_DEFSV ? SvREFCNT_inc (DEFSV) : 0;
395	c->errsv = flags & TRANSFER_SAVE_ERRSV ? SvREFCNT_inc (ERRSV) : 0;	435	c->errsv = c->save & CORO_SAVE_ERRSV ? SvREFCNT_inc (ERRSV) : 0;
		436	c->deffh = c->save & CORO_SAVE_DEFFH ? (GV *)SvREFCNT_inc (PL_defoutgv) : 0;
		437	c->irssv = c->save & CORO_SAVE_IRSSV ? SvREFCNT_inc (PL_rs) : 0;
396		438
397	c->dowarn = PL_dowarn;	439	#define VAR(name,type)c->name = PL_ ## name;
398	c->in_eval = PL_in_eval;	440	# include "state.h"
399		441	#undef VAR
400	c->curstackinfo = PL_curstackinfo;
401	c->curstack = PL_curstack;
402	c->mainstack = PL_mainstack;
403	c->stack_sp = PL_stack_sp;
404	c->op = PL_op;
405	c->curpad = PL_curpad;
406	c->comppad = PL_comppad;
407	c->compcv = PL_compcv;
408	c->stack_base = PL_stack_base;
409	c->stack_max = PL_stack_max;
410	c->tmps_stack = PL_tmps_stack;
411	c->tmps_floor = PL_tmps_floor;
412	c->tmps_ix = PL_tmps_ix;
413	c->tmps_max = PL_tmps_max;
414	c->markstack = PL_markstack;
415	c->markstack_ptr = PL_markstack_ptr;
416	c->markstack_max = PL_markstack_max;
417	c->scopestack = PL_scopestack;
418	c->scopestack_ix = PL_scopestack_ix;
419	c->scopestack_max = PL_scopestack_max;
420	c->savestack = PL_savestack;
421	c->savestack_ix = PL_savestack_ix;
422	c->savestack_max = PL_savestack_max;
423	#if PERL_VERSION < 9
424	c->retstack = PL_retstack;
425	c->retstack_ix = PL_retstack_ix;
426	c->retstack_max = PL_retstack_max;
427	#endif
428	c->curpm = PL_curpm;
429	c->curcop = PL_curcop;
430	}	442	}
431		443
432	/*	444	/*
433	* allocate various perl stacks. This is an exact copy	445	* allocate various perl stacks. This is an exact copy
434	* of perl.c:init_stacks, except that it uses less memory	446	* of perl.c:init_stacks, except that it uses less memory
435	* on the (sometimes correct) assumption that coroutines do	447	* on the (sometimes correct) assumption that coroutines do
436	* not usually need a lot of stackspace.	448	* not usually need a lot of stackspace.
437	*/	449	*/
		450	#if CORO_PREFER_PERL_FUNCTIONS
		451	# define coro_init_stacks init_stacks
		452	#else
438	static void	453	static void
439	coro_init_stacks ()	454	coro_init_stacks (pTHX)
440	{	455	{
441	PL_curstackinfo = new_stackinfo(96, 1024/sizeof(PERL_CONTEXT) - 1);	456	PL_curstackinfo = new_stackinfo(128, 1024/sizeof(PERL_CONTEXT));
442	PL_curstackinfo->si_type = PERLSI_MAIN;	457	PL_curstackinfo->si_type = PERLSI_MAIN;
443	PL_curstack = PL_curstackinfo->si_stack;	458	PL_curstack = PL_curstackinfo->si_stack;
444	PL_mainstack = PL_curstack; /* remember in case we switch stacks */	459	PL_mainstack = PL_curstack; /* remember in case we switch stacks */
445		460
446	PL_stack_base = AvARRAY(PL_curstack);	461	PL_stack_base = AvARRAY(PL_curstack);
447	PL_stack_sp = PL_stack_base;	462	PL_stack_sp = PL_stack_base;
448	PL_stack_max = PL_stack_base + AvMAX(PL_curstack);	463	PL_stack_max = PL_stack_base + AvMAX(PL_curstack);
449		464
450	New(50,PL_tmps_stack,96,SV*);	465	New(50,PL_tmps_stack,128,SV*);
451	PL_tmps_floor = -1;	466	PL_tmps_floor = -1;
452	PL_tmps_ix = -1;	467	PL_tmps_ix = -1;
453	PL_tmps_max = 96;	468	PL_tmps_max = 128;
454		469
455	New(54,PL_markstack,16,I32);	470	New(54,PL_markstack,32,I32);
456	PL_markstack_ptr = PL_markstack;	471	PL_markstack_ptr = PL_markstack;
457	PL_markstack_max = PL_markstack + 16;	472	PL_markstack_max = PL_markstack + 32;
458		473
459	#ifdef SET_MARK_OFFSET	474	#ifdef SET_MARK_OFFSET
460	SET_MARK_OFFSET;	475	SET_MARK_OFFSET;
461	#endif	476	#endif
462		477
463	New(54,PL_scopestack,16,I32);	478	New(54,PL_scopestack,32,I32);
464	PL_scopestack_ix = 0;	479	PL_scopestack_ix = 0;
465	PL_scopestack_max = 16;	480	PL_scopestack_max = 32;
466		481
467	New(54,PL_savestack,96,ANY);	482	New(54,PL_savestack,64,ANY);
468	PL_savestack_ix = 0;	483	PL_savestack_ix = 0;
469	PL_savestack_max = 96;	484	PL_savestack_max = 64;
470		485
471	#if PERL_VERSION < 9	486	#if !PERL_VERSION_ATLEAST (5,9,0)
472	New(54,PL_retstack,8,OP*);	487	New(54,PL_retstack,16,OP*);
473	PL_retstack_ix = 0;	488	PL_retstack_ix = 0;
474	PL_retstack_max = 8;	489	PL_retstack_max = 16;
475	#endif	490	#endif
476	}	491	}
		492	#endif
477		493
478	/*	494	/*
479	* destroy the stacks, the callchain etc...	495	* destroy the stacks, the callchain etc...
480	*/	496	*/
481	static void	497	static void
482	destroy_stacks()	498	coro_destroy_stacks (pTHX)
483	{	499	{
484	if (!IN_DESTRUCT)	500	if (!IN_DESTRUCT)
485	{	501	{
486	/* is this ugly, I ask? */	502	/* restore all saved variables and stuff */
487	LEAVE_SCOPE (0);	503	LEAVE_SCOPE (0);
		504	assert (PL_tmps_floor == -1);
488		505
489	/* sure it is, but more important: is it correct?? :/ */	506	/* free all temporaries */
490	FREETMPS;	507	FREETMPS;
		508	assert (PL_tmps_ix == -1);
491		509
		510	/* unwind all extra stacks */
492	/POPSTACK_TO (PL_mainstack);//D//use/	511	POPSTACK_TO (PL_mainstack);
		512
		513	/* unwind main stack */
		514	dounwind (-1);
493	}	515	}
494		516
495	while (PL_curstackinfo->si_next)	517	while (PL_curstackinfo->si_next)
496	PL_curstackinfo = PL_curstackinfo->si_next;	518	PL_curstackinfo = PL_curstackinfo->si_next;
497		519
498	while (PL_curstackinfo)	520	while (PL_curstackinfo)
499	{	521	{
500	PERL_SI *p = PL_curstackinfo->si_prev;	522	PERL_SI *p = PL_curstackinfo->si_prev;
501		523
502	{ /D//remove/
503	dSP;
504	SWITCHSTACK (PL_curstack, PL_curstackinfo->si_stack);
505	PUTBACK; /* possibly superfluous */
506	}
507
508	if (!IN_DESTRUCT)	524	if (!IN_DESTRUCT)
509	{
510	dounwind (-1);/D//remove/
511	SvREFCNT_dec (PL_curstackinfo->si_stack);	525	SvREFCNT_dec (PL_curstackinfo->si_stack);
512	}
513		526
514	Safefree (PL_curstackinfo->si_cxstack);	527	Safefree (PL_curstackinfo->si_cxstack);
515	Safefree (PL_curstackinfo);	528	Safefree (PL_curstackinfo);
516	PL_curstackinfo = p;	529	PL_curstackinfo = p;
517	}	530	}
518		531
519	Safefree (PL_tmps_stack);	532	Safefree (PL_tmps_stack);
520	Safefree (PL_markstack);	533	Safefree (PL_markstack);
521	Safefree (PL_scopestack);	534	Safefree (PL_scopestack);
522	Safefree (PL_savestack);	535	Safefree (PL_savestack);
523	#if PERL_VERSION < 9	536	#if !PERL_VERSION_ATLEAST (5,9,0)
524	Safefree (PL_retstack);	537	Safefree (PL_retstack);
525	#endif	538	#endif
526	}	539	}
527		540
		541	/ coroutine stack handling **********************************************/
		542
528	static void	543	static void
529	setup_coro (struct coro *coro)	544	setup_coro (pTHX_ struct coro *coro)
530	{	545	{
531	/*	546	/*
532	* emulate part of the perl startup here.	547	* emulate part of the perl startup here.
533	*/	548	*/
534	dTHX;	549	coro_init_stacks (aTHX);
		550
		551	PL_curcop = &PL_compiling;
		552	PL_in_eval = EVAL_NULL;
		553	PL_comppad = 0;
		554	PL_curpm = 0;
		555	PL_localizing = 0;
		556	PL_dirty = 0;
		557	PL_restartop = 0;
		558
		559	{
		560	dSP;
		561	LOGOP myop;
		562
		563	SvREFCNT_dec (GvAV (PL_defgv));
		564	GvAV (PL_defgv) = coro->args; coro->args = 0;
		565
		566	Zero (&myop, 1, LOGOP);
		567	myop.op_next = Nullop;
		568	myop.op_flags = OPf_WANT_VOID;
		569
		570	PUSHMARK (SP);
		571	XPUSHs ((SV *)get_cv ("Coro::State::_coro_init", FALSE));
		572	PUTBACK;
		573	PL_op = (OP *)&myop;
		574	PL_op = PL_ppaddr[OP_ENTERSUB](aTHX);
		575	SPAGAIN;
		576	}
		577
		578	ENTER; /* necessary e.g. for dounwind */
		579	}
		580
		581	static void
		582	free_coro_mortal (pTHX)
		583	{
		584	if (coro_mortal)
		585	{
		586	SvREFCNT_dec (coro_mortal);
		587	coro_mortal = 0;
		588	}
		589	}
		590
		591	/* inject a fake call to Coro::State::_cctx_init into the execution */
		592	static void NOINLINE
		593	prepare_cctx (pTHX_ coro_cctx *cctx)
		594	{
535	dSP;	595	dSP;
536	UNOP myop;	596	LOGOP myop;
537	SV sub_init = (SV )get_cv ("Coro::State::coro_init", FALSE);
538		597
539	coro_init_stacks ();
540	/PL_curcop = 0;/
541	/PL_in_eval = PL_in_eval;/ /* inherit */
542	SvREFCNT_dec (GvAV (PL_defgv));
543	GvAV (PL_defgv) = coro->args; coro->args = 0;
544
545	SPAGAIN;
546
547	Zero (&myop, 1, UNOP);	598	Zero (&myop, 1, LOGOP);
548	myop.op_next = Nullop;	599	myop.op_next = PL_op;
549	myop.op_flags = OPf_WANT_VOID;	600	myop.op_flags = OPf_WANT_VOID \| OPf_STACKED;
550		601
		602	PUSHMARK (SP);
		603	EXTEND (SP, 2);
		604	PUSHs (sv_2mortal (newSViv (PTR2IV (cctx))));
		605	PUSHs ((SV *)get_cv ("Coro::State::_cctx_init", FALSE));
		606	PUTBACK;
551	PL_op = (OP *)&myop;	607	PL_op = (OP *)&myop;
552
553	PUSHMARK(SP);
554	XPUSHs (sub_init);
555	PUTBACK;
556	PL_op = PL_ppaddr[OP_ENTERSUB](aTHX);	608	PL_op = PL_ppaddr[OP_ENTERSUB](aTHX);
557	SPAGAIN;	609	SPAGAIN;
558
559	ENTER; /* necessary e.g. for dounwind */
560	}
561
562	static void
563	free_coro_mortal ()
564	{
565	if (coro_mortal)
566	{
567	SvREFCNT_dec (coro_mortal);
568	coro_mortal = 0;
569	}
570	}
571
572	static void
573	prepare_cctx (coro_stack *cctx)
574	{
575	dSP;
576	UNOP myop;
577
578	Zero (&myop, 1, UNOP);
579	myop.op_next = PL_op;
580	myop.op_flags = OPf_WANT_VOID \| OPf_STACKED;
581
582	PUSHMARK(SP);
583	EXTEND (SP, 2);
584	PUSHs (newSViv (PTR2IV (cctx)));
585	PUSHs ((SV *)get_cv ("Coro::State::cctx_init", FALSE));
586	PUTBACK;
587	PL_restartop = PL_ppaddr[OP_ENTERSUB](aTHX);
588	SPAGAIN;
589	}	610	}
590		611
591	static void	612	static void
592	coro_run (void *arg)	613	coro_run (void *arg)
593	{	614	{
		615	dTHX;
		616
		617	/* coro_run is the alternative tail of transfer(), so unlock here. */
		618	UNLOCK;
		619
594	/*	620	/*
595	* this is a _very_ stripped down perl interpreter ;)	621	* this is a _very_ stripped down perl interpreter ;)
596	*/	622	*/
597	UNLOCK;
598
599	PL_top_env = &PL_start_env;	623	PL_top_env = &PL_start_env;
		624
		625	/* inject call to cctx_init */
600	prepare_cctx ((coro_stack *)arg);	626	prepare_cctx (aTHX_ (coro_cctx *)arg);
601		627
602	/* somebody will hit me for both perl_run and PL_restartop */	628	/* somebody will hit me for both perl_run and PL_restartop */
603	perl_run (PERL_GET_CONTEXT);	629	PL_restartop = PL_op;
		630	perl_run (PL_curinterp);
604		631
605	fputs ("FATAL: C coroutine fell over the edge of the world, aborting.\n", stderr);	632	fputs ("FATAL: C coroutine fell over the edge of the world, aborting. Did you call exit in a coroutine?\n", stderr);
606	abort ();	633	abort ();
607	}	634	}
608		635
609	static coro_stack *	636	static coro_cctx *
610	stack_new ()	637	cctx_new ()
611	{	638	{
612	coro_stack *stack;	639	coro_cctx *cctx;
		640	void *stack_start;
		641	size_t stack_size;
613		642
		643	++cctx_count;
		644
614	New (0, stack, 1, coro_stack);	645	Newz (0, cctx, 1, coro_cctx);
615		646
616	#if HAVE_MMAP	647	#if HAVE_MMAP
617		648
618	stack->ssize = ((STACKSIZE * sizeof (long) + PAGESIZE - 1) / PAGESIZE + STACKGUARD) * PAGESIZE;	649	cctx->ssize = ((coro_stacksize * sizeof (long) + PAGESIZE - 1) / PAGESIZE + CORO_STACKGUARD) * PAGESIZE;
619	/* mmap suppsedly does allocate-on-write for us */	650	/* mmap supposedly does allocate-on-write for us */
620	stack->sptr = mmap (0, stack->ssize, PROT_EXEC\|PROT_READ\|PROT_WRITE, MAP_PRIVATE\|MAP_ANONYMOUS, 0, 0);	651	cctx->sptr = mmap (0, cctx->ssize, PROT_EXEC\|PROT_READ\|PROT_WRITE, MAP_PRIVATE\|MAP_ANONYMOUS, 0, 0);
621		652
622	if (stack->sptr == (void *)-1)	653	if (cctx->sptr != (void *)-1)
623	{
624	perror ("FATAL: unable to mmap stack for coroutine");
625	_exit (EXIT_FAILURE);
626	}	654	{
627
628	# if STACKGUARD	655	# if CORO_STACKGUARD
629	mprotect (stack->sptr, STACKGUARD * PAGESIZE, PROT_NONE);	656	mprotect (cctx->sptr, CORO_STACKGUARD * PAGESIZE, PROT_NONE);
630	# endif	657	# endif
631		658	stack_start = CORO_STACKGUARD * PAGESIZE + (char *)cctx->sptr;
632	#else	659	stack_size = cctx->ssize - CORO_STACKGUARD * PAGESIZE;
633		660	cctx->mapped = 1;
634	stack->ssize = STACKSIZE * (long)sizeof (long);
635	New (0, stack->sptr, STACKSIZE, long);
636
637	if (!stack->sptr)
638	{	661	}
		662	else
		663	#endif
		664	{
		665	cctx->ssize = coro_stacksize * (long)sizeof (long);
		666	New (0, cctx->sptr, coro_stacksize, long);
		667
		668	if (!cctx->sptr)
		669	{
639	perror (stderr, "FATAL: unable to malloc stack for coroutine");	670	perror ("FATAL: unable to allocate stack for coroutine");
640	_exit (EXIT_FAILURE);	671	_exit (EXIT_FAILURE);
641	}	672	}
642		673
643	#endif	674	stack_start = cctx->sptr;
		675	stack_size = cctx->ssize;
		676	}
644		677
		678	REGISTER_STACK (cctx, (char )stack_start, (char )stack_start + stack_size);
645	coro_create (&stack->cctx, coro_run, (void *)stack, stack->sptr, stack->ssize);	679	coro_create (&cctx->cctx, coro_run, (void *)cctx, stack_start, stack_size);
646		680
647	return stack;	681	return cctx;
648	}	682	}
649		683
650	static void	684	static void
651	stack_free (coro_stack *stack)	685	cctx_destroy (coro_cctx *cctx)
652	{	686	{
653	if (!stack)	687	if (!cctx)
654	return;	688	return;
655		689
		690	--cctx_count;
		691
		692	#if CORO_USE_VALGRIND
		693	VALGRIND_STACK_DEREGISTER (cctx->valgrind_id);
		694	#endif
		695
656	#if HAVE_MMAP	696	#if HAVE_MMAP
		697	if (cctx->mapped)
657	munmap (stack->sptr, stack->ssize);	698	munmap (cctx->sptr, cctx->ssize);
658	#else
659	Safefree (stack->sptr);
660	#endif
661
662	Safefree (stack);
663	}
664
665	static coro_stack *stack_first;
666
667	static coro_stack *
668	stack_get ()
669	{
670	coro_stack *stack;
671
672	if (stack_first)
673	{
674	stack = stack_first;
675	stack_first = stack->next;
676	}
677	else	699	else
		700	#endif
		701	Safefree (cctx->sptr);
		702
		703	Safefree (cctx);
		704	}
		705
		706	static coro_cctx *
		707	cctx_get (pTHX)
		708	{
		709	while (cctx_first)
678	{	710	{
679	stack = stack_new ();	711	coro_cctx *cctx = cctx_first;
		712	cctx_first = cctx->next;
		713	--cctx_idle;
		714
		715	if (cctx->ssize >= coro_stacksize)
		716	return cctx;
		717
		718	cctx_destroy (cctx);
		719	}
		720
680	PL_op = PL_op->op_next;	721	PL_op = PL_op->op_next;
		722	return cctx_new ();
		723	}
		724
		725	static void
		726	cctx_put (coro_cctx *cctx)
		727	{
		728	/* free another cctx if overlimit */
		729	if (cctx_idle >= MAX_IDLE_CCTX)
		730	{
		731	coro_cctx *first = cctx_first;
		732	cctx_first = first->next;
		733	--cctx_idle;
		734
		735	assert (!first->inuse);
		736	cctx_destroy (first);
681	}	737	}
682		738
683	return stack;	739	++cctx_idle;
		740	cctx->next = cctx_first;
		741	cctx_first = cctx;
684	}	742	}
685		743
686	static void	744	/ coroutine switching ***************************************************/
687	stack_put (coro_stack *stack)
688	{
689	stack->next = stack_first;
690	stack_first = stack;
691	}
692		745
693	/* never call directly, always through the coro_state_transfer global variable */	746	/* never call directly, always through the coro_state_transfer global variable */
694	static void	747	static void NOINLINE
695	transfer_impl (struct coro prev, struct coro next, int flags)	748	transfer (pTHX_ struct coro prev, struct coro next)
696	{	749	{
697	dSTACKLEVEL;	750	dSTACKLEVEL;
698		751
699	/* sometimes transfer is only called to set idle_sp */	752	/* sometimes transfer is only called to set idle_sp */
700	if (flags == TRANSFER_SET_STACKLEVEL)	753	if (!next)
		754	{
701	((coro_stack *)prev)->idle_sp = STACKLEVEL;	755	((coro_cctx *)prev)->idle_sp = STACKLEVEL;
		756	assert (((coro_cctx )prev)->idle_te = PL_top_env); / just for the side-effect when asserts are enabled */
		757	}
702	else if (prev != next)	758	else if (prev != next)
703	{	759	{
704	coro_stack *prev__stack;	760	coro_cctx *prev__cctx;
		761
		762	if (prev->flags & CF_NEW)
		763	{
		764	/* create a new empty context */
		765	Newz (0, prev->cctx, 1, coro_cctx);
		766	prev->cctx->inuse = 1;
		767	prev->flags &= ~CF_NEW;
		768	prev->flags \|= CF_RUNNING;
		769	}
		770
		771	/TODO: must not croak here /
		772	if (!prev->flags & CF_RUNNING)
		773	croak ("Coro::State::transfer called with non-running prev Coro::State, but can only transfer from running states");
		774
		775	if (next->flags & CF_RUNNING)
		776	croak ("Coro::State::transfer called with running next Coro::State, but can only transfer to inactive states");
		777
		778	if (next->flags & CF_DESTROYED)
		779	croak ("Coro::State::transfer called with destroyed next Coro::State, but can only transfer to inactive states");
		780
		781	prev->flags &= ~CF_RUNNING;
		782	next->flags \|= CF_RUNNING;
705		783
706	LOCK;	784	LOCK;
707		785
708	if (next->mainstack)	786	if (next->flags & CF_NEW)
709	{	787	{
710	/* coroutine already started */	788	/* need to start coroutine */
711	SAVE (prev, flags);	789	next->flags &= ~CF_NEW;
712	LOAD (next);	790	/* first get rid of the old state */
		791	save_perl (aTHX_ prev);
		792	/* setup coroutine call */
		793	setup_coro (aTHX_ next);
		794	/* need a new stack */
		795	assert (!next->cctx);
713	}	796	}
714	else	797	else
715	{	798	{
716	/* need to start coroutine */	799	/* coroutine already started */
717	/* first get rid of the old state */	800	save_perl (aTHX_ prev);
718	SAVE (prev, -1);	801	load_perl (aTHX_ next);
719	/* setup coroutine call */
720	setup_coro (next);
721	/* need a stack */
722	next->stack = 0;
723	}	802	}
724		803
725	if (!prev->stack)
726	/* create a new empty context */
727	Newz (0, prev->stack, 1, coro_stack);
728
729	prev__stack = prev->stack;	804	prev__cctx = prev->cctx;
730		805
731	/* possibly "free" the stack */	806	/* possibly "free" the cctx */
732	if (prev__stack->idle_sp == STACKLEVEL)	807	if (prev__cctx->idle_sp == STACKLEVEL)
733	{	808	{
734	stack_put (prev__stack);	809	/* I assume that STACKLEVEL is a stronger indicator than PL_top_env changes */
		810	assert (("ERROR: current top_env must equal previous top_env", PL_top_env == prev__cctx->idle_te));
		811
735	prev->stack = 0;	812	prev->cctx = 0;
		813
		814	cctx_put (prev__cctx);
		815	prev__cctx->inuse = 0;
736	}	816	}
737		817
738	if (!next->stack)	818	if (!next->cctx)
739	next->stack = stack_get ();
740
741	if (prev__stack != next->stack)
742	{	819	{
743	prev__stack->top_env = PL_top_env;	820	next->cctx = cctx_get (aTHX);
744	PL_top_env = next->stack->top_env;	821	assert (!next->cctx->inuse);
745	coro_transfer (&prev__stack->cctx, &next->stack->cctx);	822	next->cctx->inuse = 1;
746	}	823	}
747		824
		825	if (prev__cctx != next->cctx)
		826	{
		827	prev__cctx->top_env = PL_top_env;
		828	PL_top_env = next->cctx->top_env;
		829	coro_transfer (&prev__cctx->cctx, &next->cctx->cctx);
		830	}
		831
748	free_coro_mortal ();	832	free_coro_mortal (aTHX);
749
750	UNLOCK;	833	UNLOCK;
751	}	834	}
752	}	835	}
753		836
754	/* use this function pointer to call the above function */
755	/* this is done to increase chances of the compiler not inlining the call */
756	/* not static to make it even harder for the compiler (and theoretically impossible in most cases */
757	void (coro_state_transfer)(struct coro prev, struct coro *next, int flags) = transfer_impl;
758
759	struct transfer_args	837	struct transfer_args
760	{	838	{
761	struct coro prev, next;	839	struct coro prev, next;
762	int flags;
763	};	840	};
764		841
765	#define TRANSFER(ta) coro_state_transfer ((ta).prev, (ta).next, (ta).flags)	842	#define TRANSFER(ta) transfer (aTHX_ (ta).prev, (ta).next)
766		843
		844	/ high level stuff ******************************************************/
		845
767	static void	846	static int
768	coro_state_destroy (struct coro *coro)	847	coro_state_destroy (pTHX_ struct coro *coro)
769	{	848	{
770	if (coro->refcnt--)	849	if (coro->flags & CF_DESTROYED)
771	return;	850	return 0;
		851
		852	coro->flags \|= CF_DESTROYED;
		853
		854	if (coro->flags & CF_READY)
		855	{
		856	/* reduce nready, as destroying a ready coro effectively unreadies it */
		857	/* alternative: look through all ready queues and remove the coro */
		858	LOCK;
		859	--coro_nready;
		860	UNLOCK;
		861	}
		862	else
		863	coro->flags \|= CF_READY; /* make sure it is NOT put into the readyqueue */
772		864
773	if (coro->mainstack && coro->mainstack != main_mainstack)	865	if (coro->mainstack && coro->mainstack != main_mainstack)
774	{	866	{
775	struct coro temp;	867	struct coro temp;
776		868
777	SAVE ((&temp), TRANSFER_SAVE_ALL);	869	assert (!(coro->flags & CF_RUNNING));
778	LOAD (coro);
779		870
		871	Zero (&temp, 1, struct coro);
		872	temp.save = CORO_SAVE_DEF;
		873
		874	if (coro->flags & CF_RUNNING)
		875	croak ("FATAL: tried to destroy currently running coroutine");
		876
		877	save_perl (aTHX_ &temp);
		878	load_perl (aTHX_ coro);
		879
780	destroy_stacks ();	880	coro_destroy_stacks (aTHX);
781		881
782	LOAD ((&temp)); /* this will get rid of defsv etc.. */	882	load_perl (aTHX_ &temp); /* this will get rid of defsv etc.. */
783		883
784	coro->mainstack = 0;	884	coro->mainstack = 0;
785	}	885	}
786		886
787	stack_free (coro->stack);	887	cctx_destroy (coro->cctx);
788	SvREFCNT_dec (coro->args);	888	SvREFCNT_dec (coro->args);
789	Safefree (coro);	889
		890	return 1;
790	}	891	}
791		892
792	static int	893	static int
793	coro_state_clear (pTHX_ SV sv, MAGIC mg)	894	coro_state_free (pTHX_ SV sv, MAGIC mg)
794	{	895	{
795	struct coro coro = (struct coro )mg->mg_ptr;	896	struct coro coro = (struct coro )mg->mg_ptr;
796	mg->mg_ptr = 0;	897	mg->mg_ptr = 0;
797		898
		899	if (--coro->refcnt < 0)
		900	{
798	coro_state_destroy (coro);	901	coro_state_destroy (aTHX_ coro);
		902	Safefree (coro);
		903	}
799		904
800	return 0;	905	return 0;
801	}	906	}
802		907
803	static int	908	static int
…		…
808	++coro->refcnt;	913	++coro->refcnt;
809		914
810	return 0;	915	return 0;
811	}	916	}
812		917
813	static MGVTBL coro_state_vtbl = { 0, 0, 0, 0, coro_state_clear, 0, coro_state_dup, 0 };	918	static MGVTBL coro_state_vtbl = {
		919	0, 0, 0, 0,
		920	coro_state_free,
		921	0,
		922	#ifdef MGf_DUP
		923	coro_state_dup,
		924	#else
		925	# define MGf_DUP 0
		926	#endif
		927	};
814		928
815	static struct coro *	929	static struct coro *
816	SvSTATE (SV *coro)	930	SvSTATE_ (pTHX_ SV *coro)
817	{	931	{
818	HV *stash;	932	HV *stash;
819	MAGIC *mg;	933	MAGIC *mg;
820		934
821	if (SvROK (coro))	935	if (SvROK (coro))
…		…
827	/* very slow, but rare, check */	941	/* very slow, but rare, check */
828	if (!sv_derived_from (sv_2mortal (newRV_inc (coro)), "Coro::State"))	942	if (!sv_derived_from (sv_2mortal (newRV_inc (coro)), "Coro::State"))
829	croak ("Coro::State object required");	943	croak ("Coro::State object required");
830	}	944	}
831		945
832	mg = SvMAGIC (coro);	946	mg = CORO_MAGIC (coro);
833	assert (mg->mg_type == PERL_MAGIC_ext);
834	return (struct coro *)mg->mg_ptr;	947	return (struct coro *)mg->mg_ptr;
835	}	948	}
836		949
		950	#define SvSTATE(sv) SvSTATE_ (aTHX_ (sv))
		951
837	static void	952	static void
838	prepare_transfer (struct transfer_args ta, SV prev, SV *next, int flags)	953	prepare_transfer (pTHX_ struct transfer_args ta, SV prev_sv, SV *next_sv)
839	{	954	{
840	ta->prev = SvSTATE (prev);	955	ta->prev = SvSTATE (prev_sv);
841	ta->next = SvSTATE (next);	956	ta->next = SvSTATE (next_sv);
842	ta->flags = flags;
843	}	957	}
844		958
845	static void	959	static void
846	api_transfer (SV prev, SV next, int flags)	960	api_transfer (SV prev_sv, SV next_sv)
847	{	961	{
848	dTHX;	962	dTHX;
849	struct transfer_args ta;	963	struct transfer_args ta;
850		964
851	prepare_transfer (&ta, prev, next, flags);	965	prepare_transfer (aTHX_ &ta, prev_sv, next_sv);
852	TRANSFER (ta);	966	TRANSFER (ta);
853	}	967	}
854		968
		969	static int
		970	api_save (SV *coro_sv, int new_save)
		971	{
		972	dTHX;
		973	struct coro *coro = SvSTATE (coro_sv);
		974	int old_save = coro->save;
		975
		976	if (new_save >= 0)
		977	coro->save = new_save;
		978
		979	return old_save;
		980	}
		981
855	/ Coro ******************************************************************/	982	/ Coro ******************************************************************/
856		983
857	#define PRIO_MAX 3
858	#define PRIO_HIGH 1
859	#define PRIO_NORMAL 0
860	#define PRIO_LOW -1
861	#define PRIO_IDLE -3
862	#define PRIO_MIN -4
863
864	/* for Coro.pm */
865	static GV coro_current, coro_idle;
866	static AV *coro_ready [PRIO_MAX-PRIO_MIN+1];
867	static int coro_nready;
868
869	static void	984	static void
870	coro_enq (SV *sv)	985	coro_enq (pTHX_ SV *coro_sv)
871	{	986	{
872	int prio;
873
874	if (SvTYPE (sv) != SVt_PVHV)
875	croak ("Coro::ready tried to enqueue something that is not a coroutine");
876
877	prio = SvSTATE (sv)->prio;
878
879	av_push (coro_ready [prio - PRIO_MIN], sv);	987	av_push (coro_ready [SvSTATE (coro_sv)->prio - PRIO_MIN], coro_sv);
880	coro_nready++;
881	}	988	}
882		989
883	static SV *	990	static SV *
884	coro_deq (int min_prio)	991	coro_deq (pTHX_ int min_prio)
885	{	992	{
886	int prio = PRIO_MAX - PRIO_MIN;	993	int prio = PRIO_MAX - PRIO_MIN;
887		994
888	min_prio -= PRIO_MIN;	995	min_prio -= PRIO_MIN;
889	if (min_prio < 0)	996	if (min_prio < 0)
890	min_prio = 0;	997	min_prio = 0;
891		998
892	for (prio = PRIO_MAX - PRIO_MIN + 1; --prio >= min_prio; )	999	for (prio = PRIO_MAX - PRIO_MIN + 1; --prio >= min_prio; )
893	if (AvFILLp (coro_ready [prio]) >= 0)	1000	if (AvFILLp (coro_ready [prio]) >= 0)
894	{
895	coro_nready--;
896	return av_shift (coro_ready [prio]);	1001	return av_shift (coro_ready [prio]);
897	}
898		1002
899	return 0;	1003	return 0;
900	}	1004	}
901		1005
902	static void	1006	static int
903	api_ready (SV *coro)	1007	api_ready (SV *coro_sv)
904	{	1008	{
905	dTHX;	1009	dTHX;
		1010	struct coro *coro;
906		1011
907	if (SvROK (coro))	1012	if (SvROK (coro_sv))
908	coro = SvRV (coro);	1013	coro_sv = SvRV (coro_sv);
		1014
		1015	coro = SvSTATE (coro_sv);
		1016
		1017	if (coro->flags & CF_READY)
		1018	return 0;
		1019
		1020	coro->flags \|= CF_READY;
909		1021
910	LOCK;	1022	LOCK;
911	coro_enq (SvREFCNT_inc (coro));	1023	coro_enq (aTHX_ SvREFCNT_inc (coro_sv));
		1024	++coro_nready;
912	UNLOCK;	1025	UNLOCK;
913	}
914		1026
		1027	return 1;
		1028	}
		1029
915	static void	1030	static int
		1031	api_is_ready (SV *coro_sv)
		1032	{
		1033	dTHX;
		1034	return !!(SvSTATE (coro_sv)->flags & CF_READY);
		1035	}
		1036
		1037	static void
916	prepare_schedule (struct transfer_args *ta)	1038	prepare_schedule (pTHX_ struct transfer_args *ta)
917	{	1039	{
918	SV current, prev, *next;	1040	SV prev_sv, next_sv;
919
920	current = GvSV (coro_current);
921		1041
922	for (;;)	1042	for (;;)
923	{	1043	{
924	LOCK;	1044	LOCK;
925	next = coro_deq (PRIO_MIN);	1045	next_sv = coro_deq (aTHX_ PRIO_MIN);
		1046
		1047	/* nothing to schedule: call the idle handler */
		1048	if (!next_sv)
		1049	{
		1050	dSP;
		1051	UNLOCK;
		1052
		1053	ENTER;
		1054	SAVETMPS;
		1055
		1056	PUSHMARK (SP);
		1057	PUTBACK;
		1058	call_sv (get_sv ("Coro::idle", FALSE), G_DISCARD);
		1059
		1060	FREETMPS;
		1061	LEAVE;
		1062	continue;
		1063	}
		1064
		1065	ta->next = SvSTATE (next_sv);
		1066
		1067	/* cannot transfer to destroyed coros, skip and look for next */
		1068	if (ta->next->flags & CF_DESTROYED)
		1069	{
		1070	UNLOCK;
		1071	SvREFCNT_dec (next_sv);
		1072	/* coro_nready is already taken care of by destroy */
		1073	continue;
		1074	}
		1075
		1076	--coro_nready;
926	UNLOCK;	1077	UNLOCK;
927
928	if (next)
929	break;	1078	break;
930
931	{
932	dSP;
933
934	ENTER;
935	SAVETMPS;
936
937	PUSHMARK (SP);
938	PUTBACK;
939	call_sv (GvSV (coro_idle), G_DISCARD);
940
941	FREETMPS;
942	LEAVE;
943	}	1079	}
944	}
945
946	prev = SvRV (current);
947	SvRV (current) = next;
948		1080
949	/* free this only after the transfer */	1081	/* free this only after the transfer */
		1082	prev_sv = SvRV (coro_current);
		1083	SvRV_set (coro_current, next_sv);
		1084	ta->prev = SvSTATE (prev_sv);
		1085
		1086	assert (ta->next->flags & CF_READY);
		1087	ta->next->flags &= ~CF_READY;
		1088
950	LOCK;	1089	LOCK;
951	free_coro_mortal ();	1090	free_coro_mortal (aTHX);
		1091	coro_mortal = prev_sv;
952	UNLOCK;	1092	UNLOCK;
953	coro_mortal = prev;
954
955	ta->prev = SvSTATE (prev);
956	ta->next = SvSTATE (next);
957	ta->flags = TRANSFER_SAVE_ALL;
958	}	1093	}
959		1094
960	static void	1095	static void
961	prepare_cede (struct transfer_args *ta)	1096	prepare_cede (pTHX_ struct transfer_args *ta)
962	{	1097	{
963	LOCK;	1098	api_ready (coro_current);
964	coro_enq (SvREFCNT_inc (SvRV (GvSV (coro_current))));
965	UNLOCK;
966
967	prepare_schedule (ta);	1099	prepare_schedule (aTHX_ ta);
		1100	}
		1101
		1102	static int
		1103	prepare_cede_notself (pTHX_ struct transfer_args *ta)
		1104	{
		1105	if (coro_nready)
		1106	{
		1107	SV *prev = SvRV (coro_current);
		1108	prepare_schedule (aTHX_ ta);
		1109	api_ready (prev);
		1110	return 1;
		1111	}
		1112	else
		1113	return 0;
968	}	1114	}
969		1115
970	static void	1116	static void
971	api_schedule (void)	1117	api_schedule (void)
972	{	1118	{
973	dTHX;	1119	dTHX;
974	struct transfer_args ta;	1120	struct transfer_args ta;
975		1121
976	prepare_schedule (&ta);	1122	prepare_schedule (aTHX_ &ta);
977	TRANSFER (ta);	1123	TRANSFER (ta);
978	}	1124	}
979		1125
980	static void	1126	static int
981	api_cede (void)	1127	api_cede (void)
982	{	1128	{
983	dTHX;	1129	dTHX;
984	struct transfer_args ta;	1130	struct transfer_args ta;
985		1131
986	prepare_cede (&ta);	1132	prepare_cede (aTHX_ &ta);
		1133
		1134	if (ta.prev != ta.next)
		1135	{
987	TRANSFER (ta);	1136	TRANSFER (ta);
		1137	return 1;
		1138	}
		1139	else
		1140	return 0;
		1141	}
		1142
		1143	static int
		1144	api_cede_notself (void)
		1145	{
		1146	dTHX;
		1147	struct transfer_args ta;
		1148
		1149	if (prepare_cede_notself (aTHX_ &ta))
		1150	{
		1151	TRANSFER (ta);
		1152	return 1;
		1153	}
		1154	else
		1155	return 0;
988	}	1156	}
989		1157
990	MODULE = Coro::State PACKAGE = Coro::State	1158	MODULE = Coro::State PACKAGE = Coro::State
991		1159
992	PROTOTYPES: DISABLE	1160	PROTOTYPES: DISABLE
…		…
998	#endif	1166	#endif
999	BOOT_PAGESIZE;	1167	BOOT_PAGESIZE;
1000		1168
1001	coro_state_stash = gv_stashpv ("Coro::State", TRUE);	1169	coro_state_stash = gv_stashpv ("Coro::State", TRUE);
1002		1170
1003	newCONSTSUB (coro_state_stash, "SAVE_DEFAV", newSViv (TRANSFER_SAVE_DEFAV));	1171	newCONSTSUB (coro_state_stash, "SAVE_DEFAV", newSViv (CORO_SAVE_DEFAV));
1004	newCONSTSUB (coro_state_stash, "SAVE_DEFSV", newSViv (TRANSFER_SAVE_DEFSV));	1172	newCONSTSUB (coro_state_stash, "SAVE_DEFSV", newSViv (CORO_SAVE_DEFSV));
1005	newCONSTSUB (coro_state_stash, "SAVE_ERRSV", newSViv (TRANSFER_SAVE_ERRSV));	1173	newCONSTSUB (coro_state_stash, "SAVE_ERRSV", newSViv (CORO_SAVE_ERRSV));
		1174	newCONSTSUB (coro_state_stash, "SAVE_IRSSV", newSViv (CORO_SAVE_IRSSV));
		1175	newCONSTSUB (coro_state_stash, "SAVE_DEFFH", newSViv (CORO_SAVE_DEFFH));
		1176	newCONSTSUB (coro_state_stash, "SAVE_DEF", newSViv (CORO_SAVE_DEF));
		1177	newCONSTSUB (coro_state_stash, "SAVE_ALL", newSViv (CORO_SAVE_ALL));
1006		1178
1007	main_mainstack = PL_mainstack;	1179	main_mainstack = PL_mainstack;
1008		1180
1009	coroapi.ver = CORO_API_VERSION;	1181	coroapi.ver = CORO_API_VERSION;
1010	coroapi.transfer = api_transfer;	1182	coroapi.transfer = api_transfer;
…		…
1020	HV *hv;	1192	HV *hv;
1021	int i;	1193	int i;
1022		1194
1023	Newz (0, coro, 1, struct coro);	1195	Newz (0, coro, 1, struct coro);
1024	coro->args = newAV ();	1196	coro->args = newAV ();
		1197	coro->save = CORO_SAVE_DEF;
		1198	coro->flags = CF_NEW;
1025		1199
1026	hv = newHV ();	1200	hv = newHV ();
1027	sv_magicext ((SV )hv, 0, PERL_MAGIC_ext, &coro_state_vtbl, (char )coro, 0)->mg_flags \|= MGf_DUP;	1201	sv_magicext ((SV )hv, 0, PERL_MAGIC_ext, &coro_state_vtbl, (char )coro, 0)->mg_flags \|= MGf_DUP;
1028	RETVAL = sv_bless (newRV_noinc ((SV *)hv), gv_stashpv (klass, 1));	1202	RETVAL = sv_bless (newRV_noinc ((SV *)hv), gv_stashpv (klass, 1));
1029		1203
1030	for (i = 1; i < items; i++)	1204	for (i = 1; i < items; i++)
1031	av_push (coro->args, newSVsv (ST (i)));	1205	av_push (coro->args, newSVsv (ST (i)));
1032
1033	/coro->mainstack = 0; //actual work is done inside transfer /
1034	/coro->stack = 0;/
1035	}	1206	}
1036	OUTPUT:	1207	OUTPUT:
		1208	RETVAL
		1209
		1210	int
		1211	save (SV *coro, int new_save = -1)
		1212	CODE:
		1213	RETVAL = api_save (coro, new_save);
		1214	OUTPUT:
		1215	RETVAL
		1216
		1217	int
		1218	save_also (SV *coro_sv, int save_also)
		1219	CODE:
		1220	{
		1221	struct coro *coro = SvSTATE (coro_sv);
		1222	RETVAL = coro->save;
		1223	coro->save \|= save_also;
		1224	}
		1225	OUTPUT:
1037	RETVAL	1226	RETVAL
1038		1227
1039	void	1228	void
1040	_set_stacklevel (...)	1229	_set_stacklevel (...)
1041	ALIAS:	1230	ALIAS:
1042	Coro::State::transfer = 1	1231	Coro::State::transfer = 1
1043	Coro::schedule = 2	1232	Coro::schedule = 2
1044	Coro::cede = 3	1233	Coro::cede = 3
1045	Coro::Cont::yield = 4	1234	Coro::cede_notself = 4
1046	CODE:	1235	CODE:
1047	{	1236	{
1048	struct transfer_args ta;	1237	struct transfer_args ta;
1049		1238
1050	switch (ix)	1239	switch (ix)
1051	{	1240	{
1052	case 0:	1241	case 0:
1053	ta.prev = (struct coro )INT2PTR (coro_stack , SvIV (ST (0)));	1242	ta.prev = (struct coro )INT2PTR (coro_cctx , SvIV (ST (0)));
1054	ta.next = 0;	1243	ta.next = 0;
1055	ta.flags = TRANSFER_SET_STACKLEVEL;
1056	break;	1244	break;
1057		1245
1058	case 1:	1246	case 1:
1059	if (items != 3)	1247	if (items != 2)
1060	croak ("Coro::State::transfer(prev,next,flags) expects three arguments, not %d", items);	1248	croak ("Coro::State::transfer (prev,next) expects two arguments, not %d", items);
1061		1249
1062	prepare_transfer (&ta, ST (0), ST (1), SvIV (ST (2)));	1250	prepare_transfer (aTHX_ &ta, ST (0), ST (1));
1063	break;	1251	break;
1064		1252
1065	case 2:	1253	case 2:
1066	prepare_schedule (&ta);	1254	prepare_schedule (aTHX_ &ta);
1067	break;	1255	break;
1068		1256
1069	case 3:	1257	case 3:
1070	prepare_cede (&ta);	1258	prepare_cede (aTHX_ &ta);
1071	break;	1259	break;
1072		1260
1073	case 4:	1261	case 4:
1074	{	1262	if (!prepare_cede_notself (aTHX_ &ta))
1075	SV *yieldstack;	1263	XSRETURN_EMPTY;
1076	SV *sv;
1077	AV *defav = GvAV (PL_defgv);
1078		1264
1079	yieldstack = *hv_fetch (
1080	(HV *)SvRV (GvSV (coro_current)),
1081	"yieldstack", sizeof ("yieldstack") - 1,
1082	0
1083	);
1084
1085	/* set up @_ -- ugly */
1086	av_clear (defav);
1087	av_fill (defav, items - 1);
1088	while (items--)
1089	av_store (defav, items, SvREFCNT_inc (ST(items)));
1090
1091	sv = av_pop ((AV *)SvRV (yieldstack));
1092	ta.prev = SvSTATE (av_fetch ((AV )SvRV (sv), 0, 0));
1093	ta.next = SvSTATE (av_fetch ((AV )SvRV (sv), 1, 0));
1094	ta.flags = 0;
1095	SvREFCNT_dec (sv);
1096	}
1097	break;	1265	break;
1098
1099	}	1266	}
1100		1267
		1268	BARRIER;
1101	TRANSFER (ta);	1269	TRANSFER (ta);
1102	}
1103		1270
1104	void	1271	if (GIMME_V != G_VOID && ta.next != ta.prev)
1105	_clone_state_from (SV dst, SV src)	1272	XSRETURN_YES;
		1273	}
		1274
		1275	bool
		1276	_destroy (SV *coro_sv)
1106	CODE:	1277	CODE:
1107	{	1278	RETVAL = coro_state_destroy (aTHX_ SvSTATE (coro_sv));
1108	struct coro *coro_src = SvSTATE (src);	1279	OUTPUT:
1109		1280	RETVAL
1110	sv_unmagic (SvRV (dst), PERL_MAGIC_ext);
1111
1112	++coro_src->refcnt;
1113	sv_magicext (SvRV (dst), 0, PERL_MAGIC_ext, &coro_state_vtbl, (char *)coro_src, 0)->mg_flags \|= MGf_DUP;
1114	}
1115
1116	void
1117	_nonlocal_goto (IV nextop)
1118	CODE:
1119	/* uuh, somebody will kill me again for this */
1120	PL_op->op_next = INT2PTR (OP *, nextop);
1121		1281
1122	void	1282	void
1123	_exit (code)	1283	_exit (code)
1124	int code	1284	int code
1125	PROTOTYPE: $	1285	PROTOTYPE: $
1126	CODE:	1286	CODE:
1127	_exit (code);	1287	_exit (code);
1128		1288
		1289	int
		1290	cctx_stacksize (int new_stacksize = 0)
		1291	CODE:
		1292	RETVAL = coro_stacksize;
		1293	if (new_stacksize)
		1294	coro_stacksize = new_stacksize;
		1295	OUTPUT:
		1296	RETVAL
		1297
		1298	int
		1299	cctx_count ()
		1300	CODE:
		1301	RETVAL = cctx_count;
		1302	OUTPUT:
		1303	RETVAL
		1304
		1305	int
		1306	cctx_idle ()
		1307	CODE:
		1308	RETVAL = cctx_idle;
		1309	OUTPUT:
		1310	RETVAL
		1311
1129	MODULE = Coro::State PACKAGE = Coro	1312	MODULE = Coro::State PACKAGE = Coro
1130		1313
1131	BOOT:	1314	BOOT:
1132	{	1315	{
1133	int i;	1316	int i;
…		…
1139	newCONSTSUB (coro_stash, "PRIO_NORMAL", newSViv (PRIO_NORMAL));	1322	newCONSTSUB (coro_stash, "PRIO_NORMAL", newSViv (PRIO_NORMAL));
1140	newCONSTSUB (coro_stash, "PRIO_LOW", newSViv (PRIO_LOW));	1323	newCONSTSUB (coro_stash, "PRIO_LOW", newSViv (PRIO_LOW));
1141	newCONSTSUB (coro_stash, "PRIO_IDLE", newSViv (PRIO_IDLE));	1324	newCONSTSUB (coro_stash, "PRIO_IDLE", newSViv (PRIO_IDLE));
1142	newCONSTSUB (coro_stash, "PRIO_MIN", newSViv (PRIO_MIN));	1325	newCONSTSUB (coro_stash, "PRIO_MIN", newSViv (PRIO_MIN));
1143		1326
1144	coro_current = gv_fetchpv ("Coro::current", TRUE, SVt_PV);	1327	coro_current = get_sv ("Coro::current", FALSE);
1145	coro_idle = gv_fetchpv ("Coro::idle" , TRUE, SVt_PV);	1328	SvREADONLY_on (coro_current);
1146		1329
1147	for (i = PRIO_MAX - PRIO_MIN + 1; i--; )	1330	for (i = PRIO_MAX - PRIO_MIN + 1; i--; )
1148	coro_ready[i] = newAV ();	1331	coro_ready[i] = newAV ();
1149		1332
1150	{	1333	{
1151	SV *sv = perl_get_sv("Coro::API", 1);	1334	SV *sv = perl_get_sv("Coro::API", 1);
1152		1335
1153	coroapi.schedule = api_schedule;	1336	coroapi.schedule = api_schedule;
		1337	coroapi.save = api_save;
1154	coroapi.cede = api_cede;	1338	coroapi.cede = api_cede;
		1339	coroapi.cede_notself = api_cede_notself;
1155	coroapi.ready = api_ready;	1340	coroapi.ready = api_ready;
		1341	coroapi.is_ready = api_is_ready;
1156	coroapi.nready = &coro_nready;	1342	coroapi.nready = &coro_nready;
1157	coroapi.current = coro_current;	1343	coroapi.current = coro_current;
1158		1344
1159	GCoroAPI = &coroapi;	1345	GCoroAPI = &coroapi;
1160	sv_setiv (sv, (IV)&coroapi);	1346	sv_setiv (sv, (IV)&coroapi);
1161	SvREADONLY_on (sv);	1347	SvREADONLY_on (sv);
1162	}	1348	}
1163	}	1349	}
		1350
		1351	void
		1352	_set_current (SV *current)
		1353	PROTOTYPE: $
		1354	CODE:
		1355	SvREFCNT_dec (SvRV (coro_current));
		1356	SvRV_set (coro_current, SvREFCNT_inc (SvRV (current)));
1164		1357
1165	int	1358	int
1166	prio (Coro::State coro, int newprio = 0)	1359	prio (Coro::State coro, int newprio = 0)
1167	ALIAS:	1360	ALIAS:
1168	nice = 1	1361	nice = 1
…		…
1171	RETVAL = coro->prio;	1364	RETVAL = coro->prio;
1172		1365
1173	if (items > 1)	1366	if (items > 1)
1174	{	1367	{
1175	if (ix)	1368	if (ix)
1176	newprio += coro->prio;	1369	newprio = coro->prio - newprio;
1177		1370
1178	if (newprio < PRIO_MIN) newprio = PRIO_MIN;	1371	if (newprio < PRIO_MIN) newprio = PRIO_MIN;
1179	if (newprio > PRIO_MAX) newprio = PRIO_MAX;	1372	if (newprio > PRIO_MAX) newprio = PRIO_MAX;
1180		1373
1181	coro->prio = newprio;	1374	coro->prio = newprio;
1182	}	1375	}
1183	}	1376	}
		1377	OUTPUT:
		1378	RETVAL
1184		1379
1185	void	1380	SV *
1186	ready (SV *self)	1381	ready (SV *self)
1187	PROTOTYPE: $	1382	PROTOTYPE: $
1188	CODE:	1383	CODE:
1189	api_ready (self);	1384	RETVAL = boolSV (api_ready (self));
		1385	OUTPUT:
		1386	RETVAL
		1387
		1388	SV *
		1389	is_ready (SV *self)
		1390	PROTOTYPE: $
		1391	CODE:
		1392	RETVAL = boolSV (api_is_ready (self));
		1393	OUTPUT:
		1394	RETVAL
1190		1395
1191	int	1396	int
1192	nready (...)	1397	nready (...)
1193	PROTOTYPE:	1398	PROTOTYPE:
1194	CODE:	1399	CODE:
…		…
1200		1405
1201	SV *	1406	SV *
1202	_get_state ()	1407	_get_state ()
1203	CODE:	1408	CODE:
1204	{	1409	{
1205	struct {	1410	struct io_state *data;
1206	int errorno;
1207	int laststype;
1208	int laststatval;
1209	Stat_t statcache;
1210	} data;
1211		1411
		1412	RETVAL = newSV (sizeof (struct io_state));
		1413	data = (struct io_state *)SvPVX (RETVAL);
		1414	SvCUR_set (RETVAL, sizeof (struct io_state));
		1415	SvPOK_only (RETVAL);
		1416
1212	data.errorno = errno;	1417	data->errorno = errno;
1213	data.laststype = PL_laststype;	1418	data->laststype = PL_laststype;
1214	data.laststatval = PL_laststatval;	1419	data->laststatval = PL_laststatval;
1215	data.statcache = PL_statcache;	1420	data->statcache = PL_statcache;
1216
1217	RETVAL = newSVpvn ((char *)&data, sizeof data);
1218	}	1421	}
1219	OUTPUT:	1422	OUTPUT:
1220	RETVAL	1423	RETVAL
1221		1424
1222	void	1425	void
1223	_set_state (char *data_)	1426	_set_state (char *data_)
1224	PROTOTYPE: $	1427	PROTOTYPE: $
1225	CODE:	1428	CODE:
1226	{	1429	{
1227	struct {	1430	struct io_state data = (void )data_;
1228	int errorno;
1229	int laststype;
1230	int laststatval;
1231	Stat_t statcache;
1232	} data = (void )data_;
1233		1431
1234	errno = data->errorno;	1432	errno = data->errorno;
1235	PL_laststype = data->laststype;	1433	PL_laststype = data->laststype;
1236	PL_laststatval = data->laststatval;	1434	PL_laststatval = data->laststatval;
1237	PL_statcache = data->statcache;	1435	PL_statcache = data->statcache;
1238	}	1436	}
		1437

Diff Legend

-–
+Removed lines
-+
+Added lines
-<
+Changed lines
->
+Changed lines

Comparing Coro/Coro/State.xs (file contents): Revision 1.99 by root, Sun Nov 26 23:53:20 2006 UTC vs. Revision 1.147 by root, Mon Mar 19 15:50:48 2007 UTC

Diff Legend

Comparing Coro/Coro/State.xs (file contents):
Revision 1.99 by root, Sun Nov 26 23:53:20 2006 UTC vs.
Revision 1.147 by root, Mon Mar 19 15:50:48 2007 UTC