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

Comparing Coro/Coro/State.xs (file contents):
Revision 1.88 by root, Fri Nov 24 15:34:33 2006 UTC vs.
Revision 1.108 by root, Mon Nov 27 18:15:47 2006 UTC

…		…
1	#define PERL_NO_GET_CONTEXT
2
3	#include "libcoro/coro.c"	1	#include "libcoro/coro.c"
4		2
5	#include "EXTERN.h"	3	#include "EXTERN.h"
6	#include "perl.h"	4	#include "perl.h"
7	#include "XSUB.h"	5	#include "XSUB.h"
8		6
9	#include "patchlevel.h"	7	#include "patchlevel.h"
10		8
11	#if PERL_VERSION < 6	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)
12	# ifndef PL_ppaddr	20	# ifndef PL_ppaddr
13	# define PL_ppaddr ppaddr	21	# define PL_ppaddr ppaddr
14	# endif	22	# endif
15	# ifndef call_sv	23	# ifndef call_sv
16	# define call_sv perl_call_sv	24	# define call_sv perl_call_sv
27	# ifndef IS_PADCONST	35	# ifndef IS_PADCONST
28	# define IS_PADCONST(v) 0	36	# define IS_PADCONST(v) 0
29	# endif	37	# endif
30	#endif	38	#endif
31		39
		40	#include <stdio.h>
32	#include <errno.h>	41	#include <errno.h>
33		42
34	#if !__i386 && !__x86_64 && !__powerpc && !__m68k && !__alpha && !__mips && !__sparc64	43	#if !__i386 && !__x86_64 && !__powerpc && !__m68k && !__alpha && !__mips && !__sparc64
35	# undef STACKGUARD	44	# undef STACKGUARD
36	#endif	45	#endif
…		…
53	# ifndef PAGESIZE	62	# ifndef PAGESIZE
54	# define PAGESIZE pagesize	63	# define PAGESIZE pagesize
55	# define BOOT_PAGESIZE pagesize = sysconf (_SC_PAGESIZE)	64	# define BOOT_PAGESIZE pagesize = sysconf (_SC_PAGESIZE)
56	static long pagesize;	65	static long pagesize;
57	# else	66	# else
58	# define BOOT_PAGESIZE	67	# define BOOT_PAGESIZE (void)0
59	# endif	68	# endif
		69	#else
		70	# define PAGESIZE 0
		71	# define BOOT_PAGESIZE (void)0
60	#endif	72	#endif
61
62	#define SUB_INIT "Coro::State::initialize"
63		73
64	/* The next macro should declare a variable stacklevel that contains and approximation	74	/* The next macro should declare a variable stacklevel that contains and approximation
65	* to the current C stack pointer. Its property is that it changes with each call	75	* to the current C stack pointer. Its property is that it changes with each call
66	* and should be unique. */	76	* and should be unique. */
		77	#define dSTACKLEVEL int stacklevel
67	#define dSTACKLEVEL void *stacklevel = &stacklevel	78	#define STACKLEVEL ((void *)&stacklevel)
68		79
69	#define IN_DESTRUCT (PL_main_cv == Nullcv)	80	#define IN_DESTRUCT (PL_main_cv == Nullcv)
70		81
71	#define labs(l) ((l) >= 0 ? (l) : -(l))	82	#if __GNUC__ >= 3
		83	# define attribute(x) __attribute__(x)
		84	#else
		85	# define attribute(x)
		86	#endif
		87
		88	#define NOINLINE attribute ((noinline))
72		89
73	#include "CoroAPI.h"	90	#include "CoroAPI.h"
		91
		92	#define TRANSFER_SET_STACKLEVEL 0x8bfbfbfb /* magic cookie */
74		93
75	#ifdef USE_ITHREADS	94	#ifdef USE_ITHREADS
76	static perl_mutex coro_mutex;	95	static perl_mutex coro_mutex;
77	# define LOCK do { MUTEX_LOCK (&coro_mutex); } while (0)	96	# define LOCK do { MUTEX_LOCK (&coro_mutex); } while (0)
78	# define UNLOCK do { MUTEX_UNLOCK (&coro_mutex); } while (0)	97	# define UNLOCK do { MUTEX_UNLOCK (&coro_mutex); } while (0)
…		…
84	static struct CoroAPI coroapi;	103	static struct CoroAPI coroapi;
85	static AV main_mainstack; / used to differentiate between $main and others */	104	static AV main_mainstack; / used to differentiate between $main and others */
86	static HV coro_state_stash, coro_stash;	105	static HV coro_state_stash, coro_stash;
87	static SV coro_mortal; / will be freed after next transfer */	106	static SV coro_mortal; / will be freed after next transfer */
88		107
89	/* this is actually not only the c stack but also c registers etc... */	108	static struct coro_cctx *cctx_first;
		109	static int cctx_count, cctx_idle;
		110
		111	/* this is a structure representing a c-level coroutine */
90	typedef struct {	112	typedef struct coro_cctx {
91	int refcnt; /* pointer reference counter */	113	struct coro_cctx *next;
92	int usecnt; /* shared by how many coroutines */
93	int gencnt; /* generation counter */
94		114
95	coro_context cctx;	115	/* the stack */
96
97	void *sptr;	116	void *sptr;
98	long ssize; /* positive == mmap, otherwise malloc */	117	long ssize; /* positive == mmap, otherwise malloc */
99	} coro_stack;
100		118
		119	/* cpu state */
		120	void idle_sp; / sp of top-level transfer/schedule/cede call */
		121	JMPENV *top_env;
		122	coro_context cctx;
		123
		124	#if USE_VALGRIND
		125	int valgrind_id;
		126	#endif
		127	} coro_cctx;
		128
		129	/* this is a structure representing a perl-level coroutine */
101	struct coro {	130	struct coro {
102	/* the optional C context */	131	/* the c coroutine allocated to this perl coroutine, if any */
103	coro_stack *stack;	132	coro_cctx *cctx;
104	void *cursp;	133
		134	/* data associated with this coroutine (initial args) */
		135	AV *args;
105	int gencnt;	136	int refcnt;
106		137
107	/* optionally saved, might be zero */	138	/* optionally saved, might be zero */
108	AV *defav;	139	AV *defav;
109	SV *defsv;	140	SV *defsv;
110	SV *errsv;	141	SV *errsv;
111		142
112	/* saved global state not related to stacks */	143	#define VAR(name,type) type name;
113	U8 dowarn;	144	# include "state.h"
114	I32 in_eval;	145	#undef VAR
115
116	/* the stacks and related info (callchain etc..) */
117	PERL_SI *curstackinfo;
118	AV *curstack;
119	AV *mainstack;
120	SV **stack_sp;
121	OP *op;
122	SV **curpad;
123	AV *comppad;
124	CV *compcv;
125	SV **stack_base;
126	SV **stack_max;
127	SV **tmps_stack;
128	I32 tmps_floor;
129	I32 tmps_ix;
130	I32 tmps_max;
131	I32 *markstack;
132	I32 *markstack_ptr;
133	I32 *markstack_max;
134	I32 *scopestack;
135	I32 scopestack_ix;
136	I32 scopestack_max;
137	ANY *savestack;
138	I32 savestack_ix;
139	I32 savestack_max;
140	OP **retstack;
141	I32 retstack_ix;
142	I32 retstack_max;
143	PMOP *curpm;
144	COP *curcop;
145	JMPENV *top_env;
146		146
147	/* coro process data */	147	/* coro process data */
148	int prio;	148	int prio;
149
150	/* data associated with this coroutine (initial args) */
151	AV *args;
152	int refcnt;
153	};	149	};
154		150
155	typedef struct coro *Coro__State;	151	typedef struct coro *Coro__State;
156	typedef struct coro *Coro__State_or_hashref;	152	typedef struct coro *Coro__State_or_hashref;
157		153
158	static AV *	154	static AV *
159	coro_clone_padlist (pTHX_ CV *cv)	155	coro_clone_padlist (CV *cv)
160	{	156	{
161	AV *padlist = CvPADLIST (cv);	157	AV *padlist = CvPADLIST (cv);
162	AV newpadlist, newpad;	158	AV newpadlist, newpad;
163		159
164	newpadlist = newAV ();	160	newpadlist = newAV ();
165	AvREAL_off (newpadlist);	161	AvREAL_off (newpadlist);
166	#if PERL_VERSION < 9	162	#if PERL_VERSION_ATLEAST (5,9,0)
		163	Perl_pad_push (aTHX_ padlist, AvFILLp (padlist) + 1);
		164	#else
167	Perl_pad_push (aTHX_ padlist, AvFILLp (padlist) + 1, 1);	165	Perl_pad_push (aTHX_ padlist, AvFILLp (padlist) + 1, 1);
168	#else
169	Perl_pad_push (aTHX_ padlist, AvFILLp (padlist) + 1);
170	#endif	166	#endif
171	newpad = (AV *)AvARRAY (padlist)[AvFILLp (padlist)];	167	newpad = (AV *)AvARRAY (padlist)[AvFILLp (padlist)];
172	--AvFILLp (padlist);	168	--AvFILLp (padlist);
173		169
174	av_store (newpadlist, 0, SvREFCNT_inc (*av_fetch (padlist, 0, FALSE)));	170	av_store (newpadlist, 0, SvREFCNT_inc (*av_fetch (padlist, 0, FALSE)));
…		…
176		172
177	return newpadlist;	173	return newpadlist;
178	}	174	}
179		175
180	static void	176	static void
181	free_padlist (pTHX_ AV *padlist)	177	free_padlist (AV *padlist)
182	{	178	{
183	/* may be during global destruction */	179	/* may be during global destruction */
184	if (SvREFCNT (padlist))	180	if (SvREFCNT (padlist))
185	{	181	{
186	I32 i = AvFILLp (padlist);	182	I32 i = AvFILLp (padlist);
…		…
207	AV *padlist;	203	AV *padlist;
208	AV av = (AV )mg->mg_obj;	204	AV av = (AV )mg->mg_obj;
209		205
210	/* casting is fun. */	206	/* casting is fun. */
211	while (&PL_sv_undef != (SV )(padlist = (AV )av_pop (av)))	207	while (&PL_sv_undef != (SV )(padlist = (AV )av_pop (av)))
212	free_padlist (aTHX_ padlist);	208	free_padlist (padlist);
213		209
214	SvREFCNT_dec (av);	210	SvREFCNT_dec (av);
215		211
216	return 0;	212	return 0;
217	}	213	}
…		…
220		216
221	static MGVTBL vtbl_coro = {0, 0, 0, 0, coro_cv_free};	217	static MGVTBL vtbl_coro = {0, 0, 0, 0, coro_cv_free};
222		218
223	/* the next two functions merely cache the padlists */	219	/* the next two functions merely cache the padlists */
224	static void	220	static void
225	get_padlist (pTHX_ CV *cv)	221	get_padlist (CV *cv)
226	{	222	{
227	MAGIC mg = mg_find ((SV )cv, PERL_MAGIC_coro);	223	MAGIC mg = mg_find ((SV )cv, PERL_MAGIC_coro);
228		224
229	if (mg && AvFILLp ((AV *)mg->mg_obj) >= 0)	225	if (mg && AvFILLp ((AV *)mg->mg_obj) >= 0)
230	CvPADLIST (cv) = (AV )av_pop ((AV )mg->mg_obj);	226	CvPADLIST (cv) = (AV )av_pop ((AV )mg->mg_obj);
231	else	227	else
232	{	228	{
233	#if 0	229	#if 0
234	/* this should work - but it doesn't :( */	230	/* this is probably cleaner, but also slower? */
235	CV *cp = Perl_cv_clone (aTHX_ cv);	231	CV *cp = Perl_cv_clone (cv);
236	CvPADLIST (cv) = CvPADLIST (cp);	232	CvPADLIST (cv) = CvPADLIST (cp);
237	CvPADLIST (cp) = 0;	233	CvPADLIST (cp) = 0;
238	SvREFCNT_dec (cp);	234	SvREFCNT_dec (cp);
239	#else	235	#else
240	CvPADLIST (cv) = coro_clone_padlist (aTHX_ cv);	236	CvPADLIST (cv) = coro_clone_padlist (cv);
241	#endif	237	#endif
242	}	238	}
243	}	239	}
244		240
245	static void	241	static void
246	put_padlist (pTHX_ CV *cv)	242	put_padlist (CV *cv)
247	{	243	{
248	MAGIC mg = mg_find ((SV )cv, PERL_MAGIC_coro);	244	MAGIC mg = mg_find ((SV )cv, PERL_MAGIC_coro);
249		245
250	if (!mg)	246	if (!mg)
251	{	247	{
…		…
259	}	255	}
260		256
261	#define SB do {	257	#define SB do {
262	#define SE } while (0)	258	#define SE } while (0)
263		259
264	#define LOAD(state) load_state(aTHX_ (state));	260	#define LOAD(state) load_state((state));
265	#define SAVE(state,flags) save_state(aTHX_ (state),(flags));	261	#define SAVE(state,flags) save_state((state),(flags));
266		262
267	#define REPLACE_SV(sv,val) SB SvREFCNT_dec(sv); (sv) = (val); (val) = 0; SE	263	#define REPLACE_SV(sv,val) SB SvREFCNT_dec(sv); (sv) = (val); (val) = 0; SE
268		264
269	static void	265	static void
270	load_state(pTHX_ Coro__State c)	266	load_state(Coro__State c)
271	{	267	{
272	PL_dowarn = c->dowarn;	268	#define VAR(name,type) PL_ ## name = c->name;
273	PL_in_eval = c->in_eval;	269	# include "state.h"
274		270	#undef VAR
275	PL_curstackinfo = c->curstackinfo;
276	PL_curstack = c->curstack;
277	PL_mainstack = c->mainstack;
278	PL_stack_sp = c->stack_sp;
279	PL_op = c->op;
280	PL_curpad = c->curpad;
281	PL_comppad = c->comppad;
282	PL_compcv = c->compcv;
283	PL_stack_base = c->stack_base;
284	PL_stack_max = c->stack_max;
285	PL_tmps_stack = c->tmps_stack;
286	PL_tmps_floor = c->tmps_floor;
287	PL_tmps_ix = c->tmps_ix;
288	PL_tmps_max = c->tmps_max;
289	PL_markstack = c->markstack;
290	PL_markstack_ptr = c->markstack_ptr;
291	PL_markstack_max = c->markstack_max;
292	PL_scopestack = c->scopestack;
293	PL_scopestack_ix = c->scopestack_ix;
294	PL_scopestack_max = c->scopestack_max;
295	PL_savestack = c->savestack;
296	PL_savestack_ix = c->savestack_ix;
297	PL_savestack_max = c->savestack_max;
298	#if PERL_VERSION < 9
299	PL_retstack = c->retstack;
300	PL_retstack_ix = c->retstack_ix;
301	PL_retstack_max = c->retstack_max;
302	#endif
303	PL_curpm = c->curpm;
304	PL_curcop = c->curcop;
305	PL_top_env = c->top_env;
306		271
307	if (c->defav) REPLACE_SV (GvAV (PL_defgv), c->defav);	272	if (c->defav) REPLACE_SV (GvAV (PL_defgv), c->defav);
308	if (c->defsv) REPLACE_SV (DEFSV , c->defsv);	273	if (c->defsv) REPLACE_SV (DEFSV , c->defsv);
309	if (c->errsv) REPLACE_SV (ERRSV , c->errsv);	274	if (c->errsv) REPLACE_SV (ERRSV , c->errsv);
310		275
…		…
317	{	282	{
318	AV padlist = (AV )POPs;	283	AV padlist = (AV )POPs;
319		284
320	if (padlist)	285	if (padlist)
321	{	286	{
322	put_padlist (aTHX_ cv); /* mark this padlist as available */	287	put_padlist (cv); /* mark this padlist as available */
323	CvPADLIST(cv) = padlist;	288	CvPADLIST(cv) = padlist;
324	}	289	}
325		290
326	++CvDEPTH(cv);	291	++CvDEPTH(cv);
327	}	292	}
…		…
329	PUTBACK;	294	PUTBACK;
330	}	295	}
331	}	296	}
332		297
333	static void	298	static void
334	save_state(pTHX_ Coro__State c, int flags)	299	save_state(Coro__State c, int flags)
335	{	300	{
336	{	301	{
337	dSP;	302	dSP;
338	I32 cxix = cxstack_ix;	303	I32 cxix = cxstack_ix;
339	PERL_CONTEXT *ccstk = cxstack;	304	PERL_CONTEXT *ccstk = cxstack;
…		…
367	}	332	}
368		333
369	PUSHs ((SV *)CvPADLIST(cv));	334	PUSHs ((SV *)CvPADLIST(cv));
370	PUSHs ((SV *)cv);	335	PUSHs ((SV *)cv);
371		336
372	get_padlist (aTHX_ cv);	337	get_padlist (cv);
373	}	338	}
374	}	339	}
375	#ifdef CXt_FORMAT	340	#ifdef CXt_FORMAT
376	else if (CxTYPE(cx) == CXt_FORMAT)	341	else if (CxTYPE(cx) == CXt_FORMAT)
377	{	342	{
…		…
395		360
396	c->defav = flags & TRANSFER_SAVE_DEFAV ? (AV *)SvREFCNT_inc (GvAV (PL_defgv)) : 0;	361	c->defav = flags & TRANSFER_SAVE_DEFAV ? (AV *)SvREFCNT_inc (GvAV (PL_defgv)) : 0;
397	c->defsv = flags & TRANSFER_SAVE_DEFSV ? SvREFCNT_inc (DEFSV) : 0;	362	c->defsv = flags & TRANSFER_SAVE_DEFSV ? SvREFCNT_inc (DEFSV) : 0;
398	c->errsv = flags & TRANSFER_SAVE_ERRSV ? SvREFCNT_inc (ERRSV) : 0;	363	c->errsv = flags & TRANSFER_SAVE_ERRSV ? SvREFCNT_inc (ERRSV) : 0;
399		364
400	c->dowarn = PL_dowarn;	365	#define VAR(name,type)c->name = PL_ ## name;
401	c->in_eval = PL_in_eval;	366	# include "state.h"
402		367	#undef VAR
403	c->curstackinfo = PL_curstackinfo;
404	c->curstack = PL_curstack;
405	c->mainstack = PL_mainstack;
406	c->stack_sp = PL_stack_sp;
407	c->op = PL_op;
408	c->curpad = PL_curpad;
409	c->comppad = PL_comppad;
410	c->compcv = PL_compcv;
411	c->stack_base = PL_stack_base;
412	c->stack_max = PL_stack_max;
413	c->tmps_stack = PL_tmps_stack;
414	c->tmps_floor = PL_tmps_floor;
415	c->tmps_ix = PL_tmps_ix;
416	c->tmps_max = PL_tmps_max;
417	c->markstack = PL_markstack;
418	c->markstack_ptr = PL_markstack_ptr;
419	c->markstack_max = PL_markstack_max;
420	c->scopestack = PL_scopestack;
421	c->scopestack_ix = PL_scopestack_ix;
422	c->scopestack_max = PL_scopestack_max;
423	c->savestack = PL_savestack;
424	c->savestack_ix = PL_savestack_ix;
425	c->savestack_max = PL_savestack_max;
426	#if PERL_VERSION < 9
427	c->retstack = PL_retstack;
428	c->retstack_ix = PL_retstack_ix;
429	c->retstack_max = PL_retstack_max;
430	#endif
431	c->curpm = PL_curpm;
432	c->curcop = PL_curcop;
433	c->top_env = PL_top_env;
434	}	368	}
435		369
436	/*	370	/*
437	* allocate various perl stacks. This is an exact copy	371	* allocate various perl stacks. This is an exact copy
438	* of perl.c:init_stacks, except that it uses less memory	372	* of perl.c:init_stacks, except that it uses less memory
439	* on the (sometimes correct) assumption that coroutines do	373	* on the (sometimes correct) assumption that coroutines do
440	* not usually need a lot of stackspace.	374	* not usually need a lot of stackspace.
441	*/	375	*/
442	static void	376	static void
443	coro_init_stacks (pTHX)	377	coro_init_stacks ()
444	{	378	{
445	LOCK;
446
447	PL_curstackinfo = new_stackinfo(96, 1024/sizeof(PERL_CONTEXT) - 1);	379	PL_curstackinfo = new_stackinfo(96, 1024/sizeof(PERL_CONTEXT) - 1);
448	PL_curstackinfo->si_type = PERLSI_MAIN;	380	PL_curstackinfo->si_type = PERLSI_MAIN;
449	PL_curstack = PL_curstackinfo->si_stack;	381	PL_curstack = PL_curstackinfo->si_stack;
450	PL_mainstack = PL_curstack; /* remember in case we switch stacks */	382	PL_mainstack = PL_curstack; /* remember in case we switch stacks */
451		383
…		…
472		404
473	New(54,PL_savestack,96,ANY);	405	New(54,PL_savestack,96,ANY);
474	PL_savestack_ix = 0;	406	PL_savestack_ix = 0;
475	PL_savestack_max = 96;	407	PL_savestack_max = 96;
476		408
477	#if PERL_VERSION < 9	409	#if !PERL_VERSION_ATLEAST (5,9,0)
478	New(54,PL_retstack,8,OP*);	410	New(54,PL_retstack,8,OP*);
479	PL_retstack_ix = 0;	411	PL_retstack_ix = 0;
480	PL_retstack_max = 8;	412	PL_retstack_max = 8;
481	#endif	413	#endif
482
483	UNLOCK;
484	}	414	}
485		415
486	/*	416	/*
487	* destroy the stacks, the callchain etc...	417	* destroy the stacks, the callchain etc...
488	*/	418	*/
489	static void	419	static void
490	destroy_stacks(pTHX)	420	coro_destroy_stacks ()
491	{	421	{
492	if (!IN_DESTRUCT)	422	if (!IN_DESTRUCT)
493	{	423	{
494	/* is this ugly, I ask? */	424	/* is this ugly, I ask? */
495	LEAVE_SCOPE (0);	425	LEAVE_SCOPE (0);
…		…
526		456
527	Safefree (PL_tmps_stack);	457	Safefree (PL_tmps_stack);
528	Safefree (PL_markstack);	458	Safefree (PL_markstack);
529	Safefree (PL_scopestack);	459	Safefree (PL_scopestack);
530	Safefree (PL_savestack);	460	Safefree (PL_savestack);
531	#if PERL_VERSION < 9	461	#if !PERL_VERSION_ATLEAST (5,9,0)
532	Safefree (PL_retstack);	462	Safefree (PL_retstack);
533	#endif	463	#endif
534	}	464	}
535		465
536	static void	466	static void
537	allocate_stack (Coro__State ctx, int alloc)	467	setup_coro (struct coro *coro)
538	{
539	coro_stack *stack;
540
541	New (0, stack, 1, coro_stack);
542
543	stack->refcnt = 1;
544	stack->usecnt = 1;
545	stack->gencnt = ctx->gencnt = 0;
546
547	if (alloc)
548	{
549	#if HAVE_MMAP
550	stack->ssize = ((STACKSIZE * sizeof (long) + PAGESIZE - 1) / PAGESIZE + STACKGUARD) * PAGESIZE; /* mmap should do allocate-on-write for us */
551	stack->sptr = mmap (0, stack->ssize, PROT_EXEC\|PROT_READ\|PROT_WRITE, MAP_PRIVATE\|MAP_ANONYMOUS, 0, 0);
552	if (stack->sptr != (void *)-1)
553	{
554	# if STACKGUARD
555	mprotect (stack->sptr, STACKGUARD * PAGESIZE, PROT_NONE);
556	# endif
557	}
558	else
559	#endif
560	{
561	stack->ssize = - (STACKSIZE * (long)sizeof (long));
562	New (0, stack->sptr, STACKSIZE, long);
563	}
564	}
565	else
566	stack->sptr = 0;
567
568	ctx->stack = stack;
569	}
570
571	static void
572	deallocate_stack (Coro__State ctx)
573	{
574	coro_stack *stack = ctx->stack;
575
576	ctx->stack = 0;
577
578	if (stack)
579	{
580	if (!--stack->refcnt)
581	{
582	#ifdef HAVE_MMAP
583	if (stack->ssize > 0 && stack->sptr)
584	munmap (stack->sptr, stack->ssize);
585	else
586	#endif
587	Safefree (stack->sptr);
588
589	Safefree (stack);
590	}
591	else if (ctx->gencnt == stack->gencnt)
592	--stack->usecnt;
593	}
594	}
595
596	static void
597	setup_coro (void *arg)
598	{	468	{
599	/*	469	/*
600	* emulate part of the perl startup here.	470	* emulate part of the perl startup here.
601	*/	471	*/
602	dTHX;
603	dSP;
604	Coro__State ctx = (Coro__State)arg;
605	SV sub_init = (SV )get_cv (SUB_INIT, FALSE);
606		472
607	coro_init_stacks (aTHX);	473	coro_init_stacks ();
		474
608	/PL_curcop = 0;/	475	PL_curcop = 0;
609	/PL_in_eval = PL_in_eval;/ /* inherit */	476	PL_in_eval = 0;
		477	PL_curpm = 0;
		478
		479	{
		480	dSP;
		481	LOGOP myop;
		482
		483	/* I have no idea why this is needed, but it is */
		484	PUSHMARK (SP);
		485
610	SvREFCNT_dec (GvAV (PL_defgv));	486	SvREFCNT_dec (GvAV (PL_defgv));
611	GvAV (PL_defgv) = ctx->args; ctx->args = 0;	487	GvAV (PL_defgv) = coro->args; coro->args = 0;
612		488
613	SPAGAIN;
614
615	if (ctx->stack)
616	{
617	ctx->cursp = 0;
618
619	PUSHMARK(SP);
620	PUTBACK;
621	(void) call_sv (sub_init, G_VOID\|G_NOARGS\|G_EVAL);
622
623	if (SvTRUE (ERRSV))
624	croak (NULL);
625	else
626	croak ("FATAL: CCTXT coroutine returned!");
627	}
628	else
629	{
630	UNOP myop;
631
632	Zero(&myop, 1, UNOP);	489	Zero (&myop, 1, LOGOP);
633	myop.op_next = Nullop;	490	myop.op_next = Nullop;
634	myop.op_flags = OPf_WANT_VOID;	491	myop.op_flags = OPf_WANT_VOID;
635		492
636	PL_op = (OP *)&myop;	493	PL_op = (OP *)&myop;
637		494
638	PUSHMARK(SP);	495	PUSHMARK (SP);
639	XPUSHs (sub_init);	496	XPUSHs ((SV *)get_cv ("Coro::State::_coro_init", FALSE));
640	/*
641	* the next line is slightly wrong, as PL_op->op_next
642	* is actually being executed so we skip the first op.
643	* that doesn't matter, though, since it is only
644	* pp_nextstate and we never return...
645	* ah yes, and I don't care anyways ;)
646	*/
647	PUTBACK;	497	PUTBACK;
648	PL_op = PL_ppaddr[OP_ENTERSUB](aTHX);	498	PL_op = PL_ppaddr[OP_ENTERSUB](aTHX);
649	SPAGAIN;	499	SPAGAIN;
650		500
651	ENTER; /* necessary e.g. for dounwind */	501	ENTER; /* necessary e.g. for dounwind */
652	}	502	}
653	}	503	}
654		504
655	static void	505	static void
656	continue_coro (void *arg)	506	free_coro_mortal ()
657	{	507	{
658	/*
659	* this is a _very_ stripped down perl interpreter ;)
660	*/
661	dTHX;
662	Coro__State ctx = (Coro__State)arg;
663
664	PL_top_env = &PL_start_env;
665
666	ctx->cursp = 0;
667	PL_op = PL_op->op_next;
668	CALLRUNOPS(aTHX);
669
670	abort ();
671	}
672
673	/* never call directly, always through the coro_state_transfer global variable */
674	static void
675	transfer_impl (pTHX_ struct coro prev, struct coro next, int flags)
676	{
677	dSTACKLEVEL;
678
679	if (prev != next)
680	{
681	/* has this coro been created yet? */
682	if (next->mainstack)
683	{
684	LOCK;
685	SAVE (prev, flags);
686	LOAD (next);
687	UNLOCK;
688
689	/* mark this state as in-use */
690	next->mainstack = 0;
691	next->tmps_ix = -2;
692
693	/* stacklevel changed? if yes, grab the stack for us! */
694	if (flags & TRANSFER_SAVE_CCTXT)
695	{
696	if (!prev->stack)
697	allocate_stack (prev, 0);
698	else if (prev->cursp != stacklevel
699	&& prev->stack->usecnt > 1)
700	{
701	prev->gencnt = ++prev->stack->gencnt;
702	prev->stack->usecnt = 1;
703	}
704
705	/* has our stack been invalidated? */
706	if (next->stack && next->stack->gencnt != next->gencnt)
707	{
708	deallocate_stack (next);
709	allocate_stack (next, 1);
710	coro_create (&(next->stack->cctx),
711	continue_coro, (void *)next,
712	next->stack->sptr, labs (next->stack->ssize));
713	}
714
715	coro_transfer (&(prev->stack->cctx), &(next->stack->cctx));
716	prev->cursp = stacklevel;
717	/* don't add any code here */
718	}
719	else
720	next->cursp = stacklevel;
721	}
722	else if (next->tmps_ix == -2)
723	croak ("tried to transfer to running coroutine");
724	else
725	{
726	LOCK;
727	SAVE (prev, -1); /* first get rid of the old state */
728	UNLOCK;
729
730	/* create the coroutine for the first time */
731	if (flags & TRANSFER_SAVE_CCTXT)
732	{
733	if (!prev->stack)
734	allocate_stack (prev, 0);
735
736	/* the new coroutine starts with start_env again */
737	PL_top_env = &PL_start_env;
738
739	if (prev->stack->sptr && flags & TRANSFER_LAZY_STACK)
740	{
741	setup_coro (next);
742	next->cursp = stacklevel;
743
744	prev->stack->refcnt++;
745	prev->stack->usecnt++;
746	next->stack = prev->stack;
747	next->gencnt = prev->gencnt;
748	}
749	else
750	{
751	assert (!next->stack);
752	allocate_stack (next, 1);
753	coro_create (&(next->stack->cctx),
754	setup_coro, (void *)next,
755	next->stack->sptr, labs (next->stack->ssize));
756	coro_transfer (&(prev->stack->cctx), &(next->stack->cctx));
757	prev->cursp = stacklevel;
758	/* don't add any code here */
759	}
760	}
761	else
762	{
763	setup_coro (next);
764	next->cursp = stacklevel;
765	}
766	}
767	}
768
769	LOCK;
770	if (coro_mortal)	508	if (coro_mortal)
771	{	509	{
772	SvREFCNT_dec (coro_mortal);	510	SvREFCNT_dec (coro_mortal);
773	coro_mortal = 0;	511	coro_mortal = 0;
774	}	512	}
		513	}
		514
		515	static void NOINLINE
		516	prepare_cctx (coro_cctx *cctx)
		517	{
		518	dSP;
		519	LOGOP myop;
		520
		521	Zero (&myop, 1, LOGOP);
		522	myop.op_next = PL_op;
		523	myop.op_flags = OPf_WANT_VOID;
		524
		525	sv_setiv (get_sv ("Coro::State::_cctx", FALSE), PTR2IV (cctx));
		526
		527	PUSHMARK (SP);
		528	XPUSHs ((SV *)get_cv ("Coro::State::_cctx_init", FALSE));
		529	PUTBACK;
		530	PL_restartop = PL_ppaddr[OP_ENTERSUB](aTHX);
		531	SPAGAIN;
		532	}
		533
		534	static void
		535	coro_run (void *arg)
		536	{
		537	/* coro_run is the alternative epilogue of transfer() */
775	UNLOCK;	538	UNLOCK;
776	}
777		539
778	/* use this function pointer to call the above function */	540	/*
779	/* this is done to increase chances of the compiler not inlining the call */	541	* this is a _very_ stripped down perl interpreter ;)
780	void (coro_state_transfer)(pTHX_ struct coro prev, struct coro *next, int flags) = transfer_impl;	542	*/
		543	PL_top_env = &PL_start_env;
		544
		545	/* inject call to cctx_init */
		546	prepare_cctx ((coro_cctx *)arg);
		547
		548	/* somebody will hit me for both perl_run and PL_restartop */
		549	perl_run (PL_curinterp);
		550
		551	fputs ("FATAL: C coroutine fell over the edge of the world, aborting. Did you call exit in a coroutine?\n", stderr);
		552	abort ();
		553	}
		554
		555	static coro_cctx *
		556	cctx_new ()
		557	{
		558	coro_cctx *cctx;
		559
		560	++cctx_count;
		561
		562	New (0, cctx, 1, coro_cctx);
		563
		564	#if HAVE_MMAP
		565
		566	cctx->ssize = ((STACKSIZE * sizeof (long) + PAGESIZE - 1) / PAGESIZE + STACKGUARD) * PAGESIZE;
		567	/* mmap suppsedly does allocate-on-write for us */
		568	cctx->sptr = mmap (0, cctx->ssize, PROT_EXEC\|PROT_READ\|PROT_WRITE, MAP_PRIVATE\|MAP_ANONYMOUS, 0, 0);
		569
		570	if (cctx->sptr == (void *)-1)
		571	{
		572	perror ("FATAL: unable to mmap stack for coroutine");
		573	_exit (EXIT_FAILURE);
		574	}
		575
		576	# if STACKGUARD
		577	mprotect (cctx->sptr, STACKGUARD * PAGESIZE, PROT_NONE);
		578	# endif
		579
		580	#else
		581
		582	cctx->ssize = STACKSIZE * (long)sizeof (long);
		583	New (0, cctx->sptr, STACKSIZE, long);
		584
		585	if (!cctx->sptr)
		586	{
		587	perror ("FATAL: unable to malloc stack for coroutine");
		588	_exit (EXIT_FAILURE);
		589	}
		590
		591	#endif
		592
		593	#if USE_VALGRIND
		594	cctx->valgrind_id = VALGRIND_STACK_REGISTER (
		595	STACKGUARD * PAGESIZE + (char *)cctx->sptr,
		596	cctx->ssize + (char *)cctx->sptr
		597	);
		598	#endif
		599
		600	coro_create (&cctx->cctx, coro_run, (void *)cctx, cctx->sptr, cctx->ssize);
		601
		602	return cctx;
		603	}
		604
		605	static void
		606	cctx_free (coro_cctx *cctx)
		607	{
		608	if (!cctx)
		609	return;
		610
		611	--cctx_count;
		612
		613	#if USE_VALGRIND
		614	VALGRIND_STACK_DEREGISTER (cctx->valgrind_id);
		615	#endif
		616
		617	#if HAVE_MMAP
		618	munmap (cctx->sptr, cctx->ssize);
		619	#else
		620	Safefree (cctx->sptr);
		621	#endif
		622
		623	Safefree (cctx);
		624	}
		625
		626	static coro_cctx *
		627	cctx_get ()
		628	{
		629	coro_cctx *cctx;
		630
		631	if (cctx_first)
		632	{
		633	--cctx_idle;
		634	cctx = cctx_first;
		635	cctx_first = cctx->next;
		636	}
		637	else
		638	{
		639	cctx = cctx_new ();
		640	PL_op = PL_op->op_next;
		641	}
		642
		643	return cctx;
		644	}
		645
		646	static void
		647	cctx_put (coro_cctx *cctx)
		648	{
		649	++cctx_idle;
		650	cctx->next = cctx_first;
		651	cctx_first = cctx;
		652	}
		653
		654	/* never call directly, always through the coro_state_transfer global variable */
		655	static void NOINLINE
		656	transfer (struct coro prev, struct coro next, int flags)
		657	{
		658	dSTACKLEVEL;
		659
		660	/* sometimes transfer is only called to set idle_sp */
		661	if (flags == TRANSFER_SET_STACKLEVEL)
		662	((coro_cctx *)prev)->idle_sp = STACKLEVEL;
		663	else if (prev != next)
		664	{
		665	coro_cctx *prev__cctx;
		666
		667	LOCK;
		668
		669	if (next->mainstack)
		670	{
		671	/* coroutine already started */
		672	SAVE (prev, flags);
		673	LOAD (next);
		674	}
		675	else
		676	{
		677	/* need to start coroutine */
		678	/* first get rid of the old state */
		679	SAVE (prev, -1);
		680	/* setup coroutine call */
		681	setup_coro (next);
		682	/* need a stack */
		683	next->cctx = 0;
		684	}
		685
		686	if (!prev->cctx)
		687	/* create a new empty context */
		688	Newz (0, prev->cctx, 1, coro_cctx);
		689
		690	prev__cctx = prev->cctx;
		691
		692	/* possibly "free" the cctx */
		693	if (prev__cctx->idle_sp == STACKLEVEL)
		694	{
		695	cctx_put (prev__cctx);
		696	prev->cctx = 0;
		697	}
		698
		699	if (!next->cctx)
		700	next->cctx = cctx_get ();
		701
		702	if (prev__cctx != next->cctx)
		703	{
		704	prev__cctx->top_env = PL_top_env;
		705	PL_top_env = next->cctx->top_env;
		706	coro_transfer (&prev__cctx->cctx, &next->cctx->cctx);
		707	}
		708
		709	free_coro_mortal ();
		710
		711	UNLOCK;
		712	}
		713	}
		714
		715	struct transfer_args
		716	{
		717	struct coro prev, next;
		718	int flags;
		719	};
		720
		721	#define TRANSFER(ta) transfer ((ta).prev, (ta).next, (ta).flags)
781		722
782	static void	723	static void
783	coro_state_destroy (struct coro *coro)	724	coro_state_destroy (struct coro *coro)
784	{	725	{
785	if (coro->refcnt--)	726	if (coro->refcnt--)
…		…
787		728
788	if (coro->mainstack && coro->mainstack != main_mainstack)	729	if (coro->mainstack && coro->mainstack != main_mainstack)
789	{	730	{
790	struct coro temp;	731	struct coro temp;
791		732
792	SAVE (aTHX_ (&temp), TRANSFER_SAVE_ALL);	733	SAVE ((&temp), TRANSFER_SAVE_ALL);
793	LOAD (aTHX_ coro);	734	LOAD (coro);
794		735
795	destroy_stacks (aTHX);	736	coro_destroy_stacks ();
796		737
797	LOAD ((&temp)); /* this will get rid of defsv etc.. */	738	LOAD ((&temp)); /* this will get rid of defsv etc.. */
798		739
799	coro->mainstack = 0;	740	coro->mainstack = 0;
800	}	741	}
801		742
802	deallocate_stack (coro);	743	cctx_free (coro->cctx);
803	SvREFCNT_dec (coro->args);	744	SvREFCNT_dec (coro->args);
804	Safefree (coro);	745	Safefree (coro);
805	}	746	}
806		747
807	static int	748	static int
808	coro_state_clear (SV sv, MAGIC mg)	749	coro_state_clear (pTHX_ SV sv, MAGIC mg)
809	{	750	{
810	struct coro coro = (struct coro )mg->mg_ptr;	751	struct coro coro = (struct coro )mg->mg_ptr;
811	mg->mg_ptr = 0;	752	mg->mg_ptr = 0;
812		753
813	coro_state_destroy (coro);	754	coro_state_destroy (coro);
814		755
815	return 0;	756	return 0;
816	}	757	}
817		758
818	static int	759	static int
819	coro_state_dup (MAGIC mg, CLONE_PARAMS params)	760	coro_state_dup (pTHX_ MAGIC mg, CLONE_PARAMS params)
820	{	761	{
821	struct coro coro = (struct coro )mg->mg_ptr;	762	struct coro coro = (struct coro )mg->mg_ptr;
822		763
823	++coro->refcnt;	764	++coro->refcnt;
824		765
825	return 0;	766	return 0;
826	}	767	}
827		768
828	static MGVTBL coro_state_vtbl = { 0, 0, 0, 0, coro_state_clear, 0, coro_state_dup, 0 };	769	static MGVTBL coro_state_vtbl = {
		770	0, 0, 0, 0,
		771	coro_state_clear,
		772	0,
		773	#ifdef MGf_DUP
		774	coro_state_dup,
		775	#else
		776	# define MGf_DUP 0
		777	#endif
		778	};
829		779
830	static struct coro *	780	static struct coro *
831	SvSTATE (SV *coro)	781	SvSTATE (SV *coro)
832	{	782	{
833	HV *stash;	783	HV *stash;
…		…
848	assert (mg->mg_type == PERL_MAGIC_ext);	798	assert (mg->mg_type == PERL_MAGIC_ext);
849	return (struct coro *)mg->mg_ptr;	799	return (struct coro *)mg->mg_ptr;
850	}	800	}
851		801
852	static void	802	static void
		803	prepare_transfer (struct transfer_args ta, SV prev, SV *next, int flags)
		804	{
		805	ta->prev = SvSTATE (prev);
		806	ta->next = SvSTATE (next);
		807	ta->flags = flags;
		808	}
		809
		810	static void
853	api_transfer (pTHX_ SV prev, SV next, int flags)	811	api_transfer (SV prev, SV next, int flags)
854	{	812	{
855	coro_state_transfer (aTHX_ SvSTATE (prev), SvSTATE (next), flags);	813	dTHX;
		814	struct transfer_args ta;
		815
		816	prepare_transfer (&ta, prev, next, flags);
		817	TRANSFER (ta);
856	}	818	}
857		819
858	/ Coro ******************************************************************/	820	/ Coro ******************************************************************/
859		821
860	#define PRIO_MAX 3	822	#define PRIO_MAX 3
…		…
868	static GV coro_current, coro_idle;	830	static GV coro_current, coro_idle;
869	static AV *coro_ready [PRIO_MAX-PRIO_MIN+1];	831	static AV *coro_ready [PRIO_MAX-PRIO_MIN+1];
870	static int coro_nready;	832	static int coro_nready;
871		833
872	static void	834	static void
873	coro_enq (pTHX_ SV *sv)	835	coro_enq (SV *sv)
874	{	836	{
875	int prio;	837	int prio;
876		838
877	if (SvTYPE (sv) != SVt_PVHV)	839	if (SvTYPE (sv) != SVt_PVHV)
878	croak ("Coro::ready tried to enqueue something that is not a coroutine");	840	croak ("Coro::ready tried to enqueue something that is not a coroutine");
…		…
882	av_push (coro_ready [prio - PRIO_MIN], sv);	844	av_push (coro_ready [prio - PRIO_MIN], sv);
883	coro_nready++;	845	coro_nready++;
884	}	846	}
885		847
886	static SV *	848	static SV *
887	coro_deq (pTHX_ int min_prio)	849	coro_deq (int min_prio)
888	{	850	{
889	int prio = PRIO_MAX - PRIO_MIN;	851	int prio = PRIO_MAX - PRIO_MIN;
890		852
891	min_prio -= PRIO_MIN;	853	min_prio -= PRIO_MIN;
892	if (min_prio < 0)	854	if (min_prio < 0)
…		…
909		871
910	if (SvROK (coro))	872	if (SvROK (coro))
911	coro = SvRV (coro);	873	coro = SvRV (coro);
912		874
913	LOCK;	875	LOCK;
914	coro_enq (aTHX_ SvREFCNT_inc (coro));	876	coro_enq (SvREFCNT_inc (coro));
915	UNLOCK;	877	UNLOCK;
916	}	878	}
917		879
918	static void	880	static void
919	api_schedule (void)	881	prepare_schedule (struct transfer_args *ta)
920	{	882	{
921	dTHX;
922
923	SV prev, next;	883	SV current, prev, *next;
		884
924	SV *current = GvSV (coro_current);	885	current = GvSV (coro_current);
925		886
926	for (;;)	887	for (;;)
927	{	888	{
928	LOCK;	889	LOCK;
929
930	next = coro_deq (aTHX_ PRIO_MIN);	890	next = coro_deq (PRIO_MIN);
		891	UNLOCK;
931		892
932	if (next)	893	if (next)
933	break;	894	break;
934
935	UNLOCK;
936		895
937	{	896	{
938	dSP;	897	dSP;
939		898
940	ENTER;	899	ENTER;
…		…
951		910
952	prev = SvRV (current);	911	prev = SvRV (current);
953	SvRV (current) = next;	912	SvRV (current) = next;
954		913
955	/* free this only after the transfer */	914	/* free this only after the transfer */
		915	LOCK;
		916	free_coro_mortal ();
		917	UNLOCK;
956	coro_mortal = prev;	918	coro_mortal = prev;
957		919
		920	ta->prev = SvSTATE (prev);
		921	ta->next = SvSTATE (next);
		922	ta->flags = TRANSFER_SAVE_ALL;
		923	}
		924
		925	static void
		926	prepare_cede (struct transfer_args *ta)
		927	{
		928	LOCK;
		929	coro_enq (SvREFCNT_inc (SvRV (GvSV (coro_current))));
958	UNLOCK;	930	UNLOCK;
959		931
960	coro_state_transfer (aTHX_ SvSTATE (prev), SvSTATE (next),	932	prepare_schedule (ta);
961	TRANSFER_SAVE_ALL \| TRANSFER_LAZY_STACK);	933	}
		934
		935	static void
		936	api_schedule (void)
		937	{
		938	dTHX;
		939	struct transfer_args ta;
		940
		941	prepare_schedule (&ta);
		942	TRANSFER (ta);
962	}	943	}
963		944
964	static void	945	static void
965	api_cede (void)	946	api_cede (void)
966	{	947	{
967	dTHX;	948	dTHX;
		949	struct transfer_args ta;
968		950
969	LOCK;	951	prepare_cede (&ta);
970	coro_enq (aTHX_ SvREFCNT_inc (SvRV (GvSV (coro_current))));	952	TRANSFER (ta);
971	UNLOCK;
972
973	api_schedule ();
974	}	953	}
975		954
976	MODULE = Coro::State PACKAGE = Coro::State	955	MODULE = Coro::State PACKAGE = Coro::State
977		956
978	PROTOTYPES: DISABLE	957	PROTOTYPES: DISABLE
…		…
987	coro_state_stash = gv_stashpv ("Coro::State", TRUE);	966	coro_state_stash = gv_stashpv ("Coro::State", TRUE);
988		967
989	newCONSTSUB (coro_state_stash, "SAVE_DEFAV", newSViv (TRANSFER_SAVE_DEFAV));	968	newCONSTSUB (coro_state_stash, "SAVE_DEFAV", newSViv (TRANSFER_SAVE_DEFAV));
990	newCONSTSUB (coro_state_stash, "SAVE_DEFSV", newSViv (TRANSFER_SAVE_DEFSV));	969	newCONSTSUB (coro_state_stash, "SAVE_DEFSV", newSViv (TRANSFER_SAVE_DEFSV));
991	newCONSTSUB (coro_state_stash, "SAVE_ERRSV", newSViv (TRANSFER_SAVE_ERRSV));	970	newCONSTSUB (coro_state_stash, "SAVE_ERRSV", newSViv (TRANSFER_SAVE_ERRSV));
992	newCONSTSUB (coro_state_stash, "SAVE_CCTXT", newSViv (TRANSFER_SAVE_CCTXT));
993		971
994	main_mainstack = PL_mainstack;	972	main_mainstack = PL_mainstack;
995		973
996	coroapi.ver = CORO_API_VERSION;	974	coroapi.ver = CORO_API_VERSION;
997	coroapi.transfer = api_transfer;	975	coroapi.transfer = api_transfer;
…		…
1008	int i;	986	int i;
1009		987
1010	Newz (0, coro, 1, struct coro);	988	Newz (0, coro, 1, struct coro);
1011	coro->args = newAV ();	989	coro->args = newAV ();
1012		990
1013	for (i = 1; i < items; i++)
1014	av_push (coro->args, newSVsv (ST (i)));
1015
1016	/coro->mainstack = 0; //actual work is done inside transfer /
1017	/coro->stack = 0;/
1018
1019	hv = newHV ();	991	hv = newHV ();
1020	sv_magicext ((SV )hv, 0, PERL_MAGIC_ext, &coro_state_vtbl, (char )coro, 0)->mg_flags \|= MGf_DUP;	992	sv_magicext ((SV )hv, 0, PERL_MAGIC_ext, &coro_state_vtbl, (char )coro, 0)->mg_flags \|= MGf_DUP;
1021	RETVAL = sv_bless (newRV_noinc ((SV *)hv), gv_stashpv (klass, 1));	993	RETVAL = sv_bless (newRV_noinc ((SV *)hv), gv_stashpv (klass, 1));
		994
		995	for (i = 1; i < items; i++)
		996	av_push (coro->args, newSVsv (ST (i)));
1022	}	997	}
1023	OUTPUT:	998	OUTPUT:
1024	RETVAL	999	RETVAL
1025		1000
1026	void	1001	void
1027	transfer(prev, next, flags)	1002	_set_stacklevel (...)
1028	SV *prev	1003	ALIAS:
1029	SV *next	1004	Coro::State::transfer = 1
1030	int flags	1005	Coro::schedule = 2
		1006	Coro::cede = 3
		1007	Coro::Cont::yield = 4
1031	CODE:	1008	CODE:
1032	PUTBACK;
1033	coro_state_transfer (aTHX_ SvSTATE (prev), SvSTATE (next), flags);
1034	SPAGAIN;
1035
1036	int
1037	prio (Coro::State coro, int newprio = 0)
1038	ALIAS:
1039	nice = 1
1040	CODE:
1041	{	1009	{
1042	RETVAL = coro->prio;	1010	struct transfer_args ta;
1043		1011
1044	if (items > 1)	1012	switch (ix)
1045	{	1013	{
		1014	case 0:
		1015	ta.prev = (struct coro )INT2PTR (coro_cctx , SvIV (ST (0)));
		1016	ta.next = 0;
		1017	ta.flags = TRANSFER_SET_STACKLEVEL;
		1018	break;
		1019
		1020	case 1:
1046	if (ix)	1021	if (items != 3)
1047	newprio += coro->prio;	1022	croak ("Coro::State::transfer(prev,next,flags) expects three arguments, not %d", items);
1048		1023
1049	if (newprio < PRIO_MIN) newprio = PRIO_MIN;	1024	prepare_transfer (&ta, ST (0), ST (1), SvIV (ST (2)));
1050	if (newprio > PRIO_MAX) newprio = PRIO_MAX;	1025	break;
1051		1026
1052	coro->prio = newprio;	1027	case 2:
		1028	prepare_schedule (&ta);
		1029	break;
		1030
		1031	case 3:
		1032	prepare_cede (&ta);
		1033	break;
		1034
		1035	case 4:
		1036	{
		1037	SV *yieldstack;
		1038	SV *sv;
		1039	AV *defav = GvAV (PL_defgv);
		1040
		1041	yieldstack = *hv_fetch (
		1042	(HV *)SvRV (GvSV (coro_current)),
		1043	"yieldstack", sizeof ("yieldstack") - 1,
		1044	0
		1045	);
		1046
		1047	/* set up @_ -- ugly */
		1048	av_clear (defav);
		1049	av_fill (defav, items - 1);
		1050	while (items--)
		1051	av_store (defav, items, SvREFCNT_inc (ST(items)));
		1052
		1053	sv = av_pop ((AV *)SvRV (yieldstack));
		1054	ta.prev = SvSTATE (av_fetch ((AV )SvRV (sv), 0, 0));
		1055	ta.next = SvSTATE (av_fetch ((AV )SvRV (sv), 1, 0));
		1056	ta.flags = 0;
		1057	SvREFCNT_dec (sv);
		1058	}
		1059	break;
		1060
1053	}	1061	}
		1062
		1063	TRANSFER (ta);
1054	}	1064	}
1055		1065
1056	void	1066	void
1057	_clone_state_from (SV dst, SV src)	1067	_clone_state_from (SV dst, SV src)
1058	CODE:	1068	CODE:
…		…
1070	int code	1080	int code
1071	PROTOTYPE: $	1081	PROTOTYPE: $
1072	CODE:	1082	CODE:
1073	_exit (code);	1083	_exit (code);
1074		1084
1075	MODULE = Coro::State PACKAGE = Coro::Cont	1085	int
		1086	cctx_count ()
		1087	CODE:
		1088	RETVAL = cctx_count;
		1089	OUTPUT:
		1090	RETVAL
1076		1091
1077	void	1092	int
1078	yield (...)	1093	cctx_idle ()
1079	PROTOTYPE: @	1094	CODE:
1080	CODE:	1095	RETVAL = cctx_idle;
1081	{	1096	OUTPUT:
1082	SV *yieldstack;	1097	RETVAL
1083	SV *sv;
1084	AV *defav = GvAV (PL_defgv);
1085	struct coro prev, next;
1086
1087	yieldstack = *hv_fetch (
1088	(HV *)SvRV (GvSV (coro_current)),
1089	"yieldstack", sizeof ("yieldstack") - 1,
1090	0
1091	);
1092
1093	/* set up @_ -- ugly */
1094	av_clear (defav);
1095	av_fill (defav, items - 1);
1096	while (items--)
1097	av_store (defav, items, SvREFCNT_inc (ST(items)));
1098
1099	sv = av_pop ((AV *)SvRV (yieldstack));
1100	prev = SvSTATE (av_fetch ((AV )SvRV (sv), 0, 0));
1101	next = SvSTATE (av_fetch ((AV )SvRV (sv), 1, 0));
1102	SvREFCNT_dec (sv);
1103
1104	coro_state_transfer (aTHX_ prev, next, 0);
1105	}
1106		1098
1107	MODULE = Coro::State PACKAGE = Coro	1099	MODULE = Coro::State PACKAGE = Coro
1108		1100
1109	BOOT:	1101	BOOT:
1110	{	1102	{
…		…
1138	sv_setiv (sv, (IV)&coroapi);	1130	sv_setiv (sv, (IV)&coroapi);
1139	SvREADONLY_on (sv);	1131	SvREADONLY_on (sv);
1140	}	1132	}
1141	}	1133	}
1142		1134
1143	#if !PERL_MICRO	1135	int
		1136	prio (Coro::State coro, int newprio = 0)
		1137	ALIAS:
		1138	nice = 1
		1139	CODE:
		1140	{
		1141	RETVAL = coro->prio;
		1142
		1143	if (items > 1)
		1144	{
		1145	if (ix)
		1146	newprio += coro->prio;
		1147
		1148	if (newprio < PRIO_MIN) newprio = PRIO_MIN;
		1149	if (newprio > PRIO_MAX) newprio = PRIO_MAX;
		1150
		1151	coro->prio = newprio;
		1152	}
		1153	}
1144		1154
1145	void	1155	void
1146	ready (self)	1156	ready (SV *self)
1147	SV * self
1148	PROTOTYPE: $	1157	PROTOTYPE: $
1149	CODE:	1158	CODE:
1150	api_ready (self);	1159	api_ready (self);
1151
1152	#endif
1153		1160
1154	int	1161	int
1155	nready (...)	1162	nready (...)
1156	PROTOTYPE:	1163	PROTOTYPE:
1157	CODE:	1164	CODE:
1158	RETVAL = coro_nready;	1165	RETVAL = coro_nready;
1159	OUTPUT:	1166	OUTPUT:
1160	RETVAL	1167	RETVAL
1161		1168
1162	void	1169	MODULE = Coro::State PACKAGE = Coro::AIO
1163	schedule (...)
1164	PROTOTYPE:
1165	CODE:
1166	api_schedule ();
1167		1170
1168	void
1169	cede (...)
1170	PROTOTYPE:
1171	CODE:
1172	api_cede ();
1173
1174	# and these are hacks
1175	SV *	1171	SV *
1176	_aio_get_state ()	1172	_get_state ()
1177	CODE:	1173	CODE:
1178	{	1174	{
1179	struct {	1175	struct {
1180	int errorno;	1176	int errorno;
1181	int laststype;	1177	int laststype;
…		…
1192	}	1188	}
1193	OUTPUT:	1189	OUTPUT:
1194	RETVAL	1190	RETVAL
1195		1191
1196	void	1192	void
1197	_aio_set_state (char *data_)	1193	_set_state (char *data_)
1198	PROTOTYPE: $	1194	PROTOTYPE: $
1199	CODE:	1195	CODE:
1200	{	1196	{
1201	struct {	1197	struct {
1202	int errorno;	1198	int errorno;

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Comparing Coro/Coro/State.xs (file contents): Revision 1.88 by root, Fri Nov 24 15:34:33 2006 UTC vs. Revision 1.108 by root, Mon Nov 27 18:15:47 2006 UTC

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Comparing Coro/Coro/State.xs (file contents):
Revision 1.88 by root, Fri Nov 24 15:34:33 2006 UTC vs.
Revision 1.108 by root, Mon Nov 27 18:15:47 2006 UTC