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

Comparing Coro/Coro/State.xs (file contents):
Revision 1.91 by root, Sat Nov 25 01:14:11 2006 UTC vs.
Revision 1.111 by root, Thu Nov 30 18:21:14 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 just 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 coro_stack {	112	typedef struct coro_cctx {
91	struct coro_stack *next;	113	struct coro_cctx *next;
92		114
93	void *idle_sp;	115	/* the stack */
94	void *sptr;	116	void *sptr;
95	long ssize; /* positive == mmap, otherwise malloc */	117	long ssize; /* positive == mmap, otherwise malloc */
96		118
97	/* cpu state */	119	/* cpu state */
		120	void idle_sp; / sp of top-level transfer/schedule/cede call */
		121	JMPENV *top_env;
98	coro_context cctx;	122	coro_context cctx;
99	} coro_stack;
100		123
101	static coro_stack *main_stack;	124	int inuse;
102		125
		126	#if USE_VALGRIND
		127	int valgrind_id;
		128	#endif
		129	} coro_cctx;
		130
		131	enum {
		132	CF_RUNNING, /* coroutine is running */
		133	CF_READY, /* coroutine is ready */
		134	};
		135
		136	/* this is a structure representing a perl-level coroutine */
103	struct coro {	137	struct coro {
		138	/* the c coroutine allocated to this perl coroutine, if any */
		139	coro_cctx *cctx;
		140
		141	/* data associated with this coroutine (initial args) */
		142	AV *args;
		143	int refcnt;
		144	int flags;
		145
104	/* optionally saved, might be zero */	146	/* optionally saved, might be zero */
105	AV *defav;	147	AV *defav;
106	SV *defsv;	148	SV *defsv;
107	SV *errsv;	149	SV *errsv;
108		150
109	/* saved global state not related to stacks */	151	#define VAR(name,type) type name;
110	U8 dowarn;	152	# include "state.h"
111	I32 in_eval;	153	#undef VAR
112
113	/* the c stack, if any */
114	coro_stack *stack;
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		154
147	/* coro process data */	155	/* coro process data */
148	int prio;	156	int prio;
149
150	/* data associated with this coroutine (initial args) */
151	AV *args;
152	int refcnt;
153	};	157	};
154		158
155	typedef struct coro *Coro__State;	159	typedef struct coro *Coro__State;
156	typedef struct coro *Coro__State_or_hashref;	160	typedef struct coro *Coro__State_or_hashref;
157		161
158	static AV *	162	static AV *
159	coro_clone_padlist (pTHX_ CV *cv)	163	coro_clone_padlist (CV *cv)
160	{	164	{
161	AV *padlist = CvPADLIST (cv);	165	AV *padlist = CvPADLIST (cv);
162	AV newpadlist, newpad;	166	AV newpadlist, newpad;
163		167
164	newpadlist = newAV ();	168	newpadlist = newAV ();
165	AvREAL_off (newpadlist);	169	AvREAL_off (newpadlist);
166	#if PERL_VERSION < 9	170	#if PERL_VERSION_ATLEAST (5,9,0)
		171	Perl_pad_push (aTHX_ padlist, AvFILLp (padlist) + 1);
		172	#else
167	Perl_pad_push (aTHX_ padlist, AvFILLp (padlist) + 1, 1);	173	Perl_pad_push (aTHX_ padlist, AvFILLp (padlist) + 1, 1);
168	#else
169	Perl_pad_push (aTHX_ padlist, AvFILLp (padlist) + 1);
170	#endif	174	#endif
171	newpad = (AV *)AvARRAY (padlist)[AvFILLp (padlist)];	175	newpad = (AV *)AvARRAY (padlist)[AvFILLp (padlist)];
172	--AvFILLp (padlist);	176	--AvFILLp (padlist);
173		177
174	av_store (newpadlist, 0, SvREFCNT_inc (*av_fetch (padlist, 0, FALSE)));	178	av_store (newpadlist, 0, SvREFCNT_inc (*av_fetch (padlist, 0, FALSE)));
…		…
176		180
177	return newpadlist;	181	return newpadlist;
178	}	182	}
179		183
180	static void	184	static void
181	free_padlist (pTHX_ AV *padlist)	185	free_padlist (AV *padlist)
182	{	186	{
183	/* may be during global destruction */	187	/* may be during global destruction */
184	if (SvREFCNT (padlist))	188	if (SvREFCNT (padlist))
185	{	189	{
186	I32 i = AvFILLp (padlist);	190	I32 i = AvFILLp (padlist);
…		…
207	AV *padlist;	211	AV *padlist;
208	AV av = (AV )mg->mg_obj;	212	AV av = (AV )mg->mg_obj;
209		213
210	/* casting is fun. */	214	/* casting is fun. */
211	while (&PL_sv_undef != (SV )(padlist = (AV )av_pop (av)))	215	while (&PL_sv_undef != (SV )(padlist = (AV )av_pop (av)))
212	free_padlist (aTHX_ padlist);	216	free_padlist (padlist);
213		217
214	SvREFCNT_dec (av);	218	SvREFCNT_dec (av);
215		219
216	return 0;	220	return 0;
217	}	221	}
218		222
219	#define PERL_MAGIC_coro PERL_MAGIC_ext	223	#define PERL_MAGIC_coro PERL_MAGIC_ext
220		224
221	static MGVTBL vtbl_coro = {0, 0, 0, 0, coro_cv_free};	225	static MGVTBL vtbl_coro = {0, 0, 0, 0, coro_cv_free};
222		226
		227	#define CORO_MAGIC(cv) \
		228	SvMAGIC (cv) \
		229	? SvMAGIC (cv)->mg_type == PERL_MAGIC_coro \
		230	? SvMAGIC (cv) \
		231	: mg_find ((SV *)cv, PERL_MAGIC_coro) \
		232	: 0
		233
223	/* the next two functions merely cache the padlists */	234	/* the next two functions merely cache the padlists */
224	static void	235	static void
225	get_padlist (pTHX_ CV *cv)	236	get_padlist (CV *cv)
226	{	237	{
227	MAGIC mg = mg_find ((SV )cv, PERL_MAGIC_coro);	238	MAGIC *mg = CORO_MAGIC (cv);
		239	AV *av;
228		240
229	if (mg && AvFILLp ((AV *)mg->mg_obj) >= 0)	241	if (mg && AvFILLp ((av = (AV *)mg->mg_obj)) >= 0)
230	CvPADLIST (cv) = (AV )av_pop ((AV )mg->mg_obj);	242	CvPADLIST (cv) = (AV *)AvARRAY (av)[AvFILLp (av)--];
231	else	243	else
232	{	244	{
233	#if 0	245	#if 0
234	/* this should work - but it doesn't :( */	246	/* this is probably cleaner, but also slower? */
235	CV *cp = Perl_cv_clone (aTHX_ cv);	247	CV *cp = Perl_cv_clone (cv);
236	CvPADLIST (cv) = CvPADLIST (cp);	248	CvPADLIST (cv) = CvPADLIST (cp);
237	CvPADLIST (cp) = 0;	249	CvPADLIST (cp) = 0;
238	SvREFCNT_dec (cp);	250	SvREFCNT_dec (cp);
239	#else	251	#else
240	CvPADLIST (cv) = coro_clone_padlist (aTHX_ cv);	252	CvPADLIST (cv) = coro_clone_padlist (cv);
241	#endif	253	#endif
242	}	254	}
243	}	255	}
244		256
245	static void	257	static void
246	put_padlist (pTHX_ CV *cv)	258	put_padlist (CV *cv)
247	{	259	{
248	MAGIC mg = mg_find ((SV )cv, PERL_MAGIC_coro);	260	MAGIC *mg = CORO_MAGIC (cv);
		261	AV *av;
249		262
250	if (!mg)	263	if (!mg)
251	{	264	{
252	sv_magic ((SV *)cv, 0, PERL_MAGIC_coro, 0, 0);	265	sv_magic ((SV *)cv, 0, PERL_MAGIC_coro, 0, 0);
253	mg = mg_find ((SV *)cv, PERL_MAGIC_coro);	266	mg = mg_find ((SV *)cv, PERL_MAGIC_coro);
254	mg->mg_virtual = &vtbl_coro;	267	mg->mg_virtual = &vtbl_coro;
255	mg->mg_obj = (SV *)newAV ();	268	mg->mg_obj = (SV *)newAV ();
256	}	269	}
257		270
258	av_push ((AV )mg->mg_obj, (SV )CvPADLIST (cv));	271	av = (AV *)mg->mg_obj;
		272
		273	if (AvFILLp (av) >= AvMAX (av))
		274	av_extend (av, AvMAX (av) + 1);
		275
		276	AvARRAY (av)[++AvFILLp (av)] = (SV *)CvPADLIST (cv);
259	}	277	}
260		278
261	#define SB do {	279	#define SB do {
262	#define SE } while (0)	280	#define SE } while (0)
263		281
264	#define LOAD(state) load_state(aTHX_ (state));	282	#define LOAD(state) load_state((state));
265	#define SAVE(state,flags) save_state(aTHX_ (state),(flags));	283	#define SAVE(state,flags) save_state((state),(flags));
266		284
267	#define REPLACE_SV(sv,val) SB SvREFCNT_dec(sv); (sv) = (val); (val) = 0; SE	285	#define REPLACE_SV(sv,val) SB SvREFCNT_dec(sv); (sv) = (val); (val) = 0; SE
268		286
269	static void	287	static void
270	load_state(pTHX_ Coro__State c)	288	load_state(Coro__State c)
271	{	289	{
272	PL_dowarn = c->dowarn;	290	#define VAR(name,type) PL_ ## name = c->name;
273	PL_in_eval = c->in_eval;	291	# include "state.h"
274		292	#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		293
307	if (c->defav) REPLACE_SV (GvAV (PL_defgv), c->defav);	294	if (c->defav) REPLACE_SV (GvAV (PL_defgv), c->defav);
308	if (c->defsv) REPLACE_SV (DEFSV , c->defsv);	295	if (c->defsv) REPLACE_SV (DEFSV , c->defsv);
309	if (c->errsv) REPLACE_SV (ERRSV , c->errsv);	296	if (c->errsv) REPLACE_SV (ERRSV , c->errsv);
310		297
…		…
313	CV *cv;	300	CV *cv;
314		301
315	/* now do the ugly restore mess */	302	/* now do the ugly restore mess */
316	while ((cv = (CV *)POPs))	303	while ((cv = (CV *)POPs))
317	{	304	{
318	AV padlist = (AV )POPs;
319
320	if (padlist)
321	{
322	put_padlist (aTHX_ cv); /* mark this padlist as available */	305	put_padlist (cv); /* mark this padlist as available */
323	CvPADLIST(cv) = padlist;	306	CvDEPTH (cv) = PTR2IV (POPs);
324	}	307	CvPADLIST (cv) = (AV *)POPs;
325
326	++CvDEPTH(cv);
327	}	308	}
328		309
329	PUTBACK;	310	PUTBACK;
330	}	311	}
331	}	312	}
332		313
333	static void	314	static void
334	save_state(pTHX_ Coro__State c, int flags)	315	save_state(Coro__State c, int flags)
335	{	316	{
336	{	317	{
337	dSP;	318	dSP;
338	I32 cxix = cxstack_ix;	319	I32 cxix = cxstack_ix;
339	PERL_CONTEXT *ccstk = cxstack;	320	PERL_CONTEXT *ccstk = cxstack;
…		…
353	PERL_CONTEXT *cx = &ccstk[cxix--];	334	PERL_CONTEXT *cx = &ccstk[cxix--];
354		335
355	if (CxTYPE(cx) == CXt_SUB)	336	if (CxTYPE(cx) == CXt_SUB)
356	{	337	{
357	CV *cv = cx->blk_sub.cv;	338	CV *cv = cx->blk_sub.cv;
		339
358	if (CvDEPTH(cv))	340	if (CvDEPTH (cv))
359	{	341	{
360	EXTEND (SP, CvDEPTH(cv)*2);	342	EXTEND (SP, 3);
361
362	while (--CvDEPTH(cv))
363	{
364	/* this tells the restore code to increment CvDEPTH */
365	PUSHs (Nullsv);
366	PUSHs ((SV *)cv);
367	}
368		343
369	PUSHs ((SV *)CvPADLIST(cv));	344	PUSHs ((SV *)CvPADLIST(cv));
		345	PUSHs (INT2PTR (SV *, CvDEPTH (cv)));
370	PUSHs ((SV *)cv);	346	PUSHs ((SV *)cv);
371		347
		348	CvDEPTH (cv) = 0;
372	get_padlist (aTHX_ cv);	349	get_padlist (cv);
373	}	350	}
374	}	351	}
375	#ifdef CXt_FORMAT	352	#ifdef CXt_FORMAT
376	else if (CxTYPE(cx) == CXt_FORMAT)	353	else if (CxTYPE(cx) == CXt_FORMAT)
377	{	354	{
…		…
395		372
396	c->defav = flags & TRANSFER_SAVE_DEFAV ? (AV *)SvREFCNT_inc (GvAV (PL_defgv)) : 0;	373	c->defav = flags & TRANSFER_SAVE_DEFAV ? (AV *)SvREFCNT_inc (GvAV (PL_defgv)) : 0;
397	c->defsv = flags & TRANSFER_SAVE_DEFSV ? SvREFCNT_inc (DEFSV) : 0;	374	c->defsv = flags & TRANSFER_SAVE_DEFSV ? SvREFCNT_inc (DEFSV) : 0;
398	c->errsv = flags & TRANSFER_SAVE_ERRSV ? SvREFCNT_inc (ERRSV) : 0;	375	c->errsv = flags & TRANSFER_SAVE_ERRSV ? SvREFCNT_inc (ERRSV) : 0;
399		376
400	c->dowarn = PL_dowarn;	377	#define VAR(name,type)c->name = PL_ ## name;
401	c->in_eval = PL_in_eval;	378	# include "state.h"
402		379	#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	}	380	}
435		381
436	/*	382	/*
437	* allocate various perl stacks. This is an exact copy	383	* allocate various perl stacks. This is an exact copy
438	* of perl.c:init_stacks, except that it uses less memory	384	* of perl.c:init_stacks, except that it uses less memory
439	* on the (sometimes correct) assumption that coroutines do	385	* on the (sometimes correct) assumption that coroutines do
440	* not usually need a lot of stackspace.	386	* not usually need a lot of stackspace.
441	*/	387	*/
442	static void	388	static void
443	coro_init_stacks (pTHX)	389	coro_init_stacks ()
444	{	390	{
445	LOCK;
446
447	PL_curstackinfo = new_stackinfo(96, 1024/sizeof(PERL_CONTEXT) - 1);	391	PL_curstackinfo = new_stackinfo(96, 1024/sizeof(PERL_CONTEXT) - 1);
448	PL_curstackinfo->si_type = PERLSI_MAIN;	392	PL_curstackinfo->si_type = PERLSI_MAIN;
449	PL_curstack = PL_curstackinfo->si_stack;	393	PL_curstack = PL_curstackinfo->si_stack;
450	PL_mainstack = PL_curstack; /* remember in case we switch stacks */	394	PL_mainstack = PL_curstack; /* remember in case we switch stacks */
451		395
…		…
472		416
473	New(54,PL_savestack,96,ANY);	417	New(54,PL_savestack,96,ANY);
474	PL_savestack_ix = 0;	418	PL_savestack_ix = 0;
475	PL_savestack_max = 96;	419	PL_savestack_max = 96;
476		420
477	#if PERL_VERSION < 9	421	#if !PERL_VERSION_ATLEAST (5,9,0)
478	New(54,PL_retstack,8,OP*);	422	New(54,PL_retstack,8,OP*);
479	PL_retstack_ix = 0;	423	PL_retstack_ix = 0;
480	PL_retstack_max = 8;	424	PL_retstack_max = 8;
481	#endif	425	#endif
482
483	UNLOCK;
484	}	426	}
485		427
486	/*	428	/*
487	* destroy the stacks, the callchain etc...	429	* destroy the stacks, the callchain etc...
488	*/	430	*/
489	static void	431	static void
490	destroy_stacks(pTHX)	432	coro_destroy_stacks ()
491	{	433	{
492	if (!IN_DESTRUCT)	434	if (!IN_DESTRUCT)
493	{	435	{
494	/* is this ugly, I ask? */	436	/* is this ugly, I ask? */
495	LEAVE_SCOPE (0);	437	LEAVE_SCOPE (0);
…		…
526		468
527	Safefree (PL_tmps_stack);	469	Safefree (PL_tmps_stack);
528	Safefree (PL_markstack);	470	Safefree (PL_markstack);
529	Safefree (PL_scopestack);	471	Safefree (PL_scopestack);
530	Safefree (PL_savestack);	472	Safefree (PL_savestack);
531	#if PERL_VERSION < 9	473	#if !PERL_VERSION_ATLEAST (5,9,0)
532	Safefree (PL_retstack);	474	Safefree (PL_retstack);
533	#endif	475	#endif
534	}	476	}
535		477
536	static void	478	static void
537	setup_coro (struct coro *coro)	479	setup_coro (struct coro *coro)
538	{	480	{
539	/*	481	/*
540	* emulate part of the perl startup here.	482	* emulate part of the perl startup here.
541	*/	483	*/
542	dTHX;
543	dSP;
544	UNOP myop;
545	SV sub_init = (SV )get_cv (SUB_INIT, FALSE);
546		484
547	coro_init_stacks (aTHX);	485	coro_init_stacks ();
		486
548	/PL_curcop = 0;/	487	PL_curcop = 0;
549	/PL_in_eval = PL_in_eval;/ /* inherit */	488	PL_in_eval = 0;
		489	PL_curpm = 0;
		490
		491	{
		492	dSP;
		493	LOGOP myop;
		494
		495	/* I have no idea why this is needed, but it is */
		496	PUSHMARK (SP);
		497
550	SvREFCNT_dec (GvAV (PL_defgv));	498	SvREFCNT_dec (GvAV (PL_defgv));
551	GvAV (PL_defgv) = coro->args; coro->args = 0;	499	GvAV (PL_defgv) = coro->args; coro->args = 0;
552		500
553	SPAGAIN;
554
555	Zero (&myop, 1, UNOP);	501	Zero (&myop, 1, LOGOP);
556	myop.op_next = Nullop;	502	myop.op_next = Nullop;
557	myop.op_flags = OPf_WANT_VOID;	503	myop.op_flags = OPf_WANT_VOID;
558		504
559	PL_op = (OP *)&myop;	505	PL_op = (OP *)&myop;
560		506
561	PUSHMARK(SP);	507	PUSHMARK (SP);
562	XPUSHs (sub_init);	508	XPUSHs ((SV *)get_cv ("Coro::State::_coro_init", FALSE));
563	PUTBACK;	509	PUTBACK;
564	PL_op = PL_ppaddr[OP_ENTERSUB](aTHX);	510	PL_op = PL_ppaddr[OP_ENTERSUB](aTHX);
565	SPAGAIN;	511	SPAGAIN;
566		512
567	ENTER; /* necessary e.g. for dounwind */	513	ENTER; /* necessary e.g. for dounwind */
		514	}
568	}	515	}
569		516
570	static void	517	static void
571	transfer_tail ()	518	free_coro_mortal ()
572	{	519	{
573	if (coro_mortal)	520	if (coro_mortal)
574	{	521	{
575	SvREFCNT_dec (coro_mortal);	522	SvREFCNT_dec (coro_mortal);
576	coro_mortal = 0;	523	coro_mortal = 0;
577	}	524	}
		525	}
578		526
		527	static void NOINLINE
		528	prepare_cctx (coro_cctx *cctx)
		529	{
		530	dSP;
		531	LOGOP myop;
		532
		533	Zero (&myop, 1, LOGOP);
		534	myop.op_next = PL_op;
		535	myop.op_flags = OPf_WANT_VOID;
		536
		537	sv_setiv (get_sv ("Coro::State::_cctx", FALSE), PTR2IV (cctx));
		538
		539	PUSHMARK (SP);
		540	XPUSHs ((SV *)get_cv ("Coro::State::_cctx_init", FALSE));
		541	PUTBACK;
		542	PL_restartop = PL_ppaddr[OP_ENTERSUB](aTHX);
		543	SPAGAIN;
		544	}
		545
		546	static void
		547	coro_run (void *arg)
		548	{
		549	/* coro_run is the alternative epilogue of transfer() */
579	UNLOCK;	550	UNLOCK;
580	}
581		551
582	static void
583	coro_run (void *arg)
584	{
585	/*	552	/*
586	* this is a _very_ stripped down perl interpreter ;)	553	* this is a _very_ stripped down perl interpreter ;)
587	*/	554	*/
588	dTHX;
589
590	transfer_tail ();
591
592	PL_top_env = &PL_start_env;	555	PL_top_env = &PL_start_env;
593	PL_restartop = PL_op;	556
		557	/* inject call to cctx_init */
		558	prepare_cctx ((coro_cctx *)arg);
		559
594	/* somebody will hit me for both perl_run and PL_restart_top */	560	/* somebody will hit me for both perl_run and PL_restartop */
595	perl_run (aTHX_ PERL_GET_CONTEXT);	561	perl_run (PL_curinterp);
596		562
		563	fputs ("FATAL: C coroutine fell over the edge of the world, aborting. Did you call exit in a coroutine?\n", stderr);
597	abort ();	564	abort ();
598	}	565	}
599		566
600	static coro_stack *	567	static coro_cctx *
601	stack_new ()	568	cctx_new ()
602	{	569	{
603	coro_stack *stack;	570	coro_cctx *cctx;
604		571
		572	++cctx_count;
		573
605	New (0, stack, 1, coro_stack);	574	New (0, cctx, 1, coro_cctx);
606		575
607	#if HAVE_MMAP	576	#if HAVE_MMAP
608		577
609	stack->ssize = ((STACKSIZE * sizeof (long) + PAGESIZE - 1) / PAGESIZE + STACKGUARD) * PAGESIZE; /* mmap should do allocate-on-write for us */	578	cctx->ssize = ((STACKSIZE * sizeof (long) + PAGESIZE - 1) / PAGESIZE + STACKGUARD) * PAGESIZE;
		579	/* mmap suppsedly does allocate-on-write for us */
610	stack->sptr = mmap (0, stack->ssize, PROT_EXEC\|PROT_READ\|PROT_WRITE, MAP_PRIVATE\|MAP_ANONYMOUS, 0, 0);	580	cctx->sptr = mmap (0, cctx->ssize, PROT_EXEC\|PROT_READ\|PROT_WRITE, MAP_PRIVATE\|MAP_ANONYMOUS, 0, 0);
611		581
612	if (stack->sptr == (void *)-1)	582	if (cctx->sptr == (void *)-1)
613	{	583	{
614	fprintf (stderr, "FATAL: unable to mmap stack for coroutine\n");	584	perror ("FATAL: unable to mmap stack for coroutine");
615	_exit (EXIT_FAILURE);	585	_exit (EXIT_FAILURE);
616	}	586	}
617		587
		588	# if STACKGUARD
618	mprotect (stack->sptr, STACKGUARD * PAGESIZE, PROT_NONE);	589	mprotect (cctx->sptr, STACKGUARD * PAGESIZE, PROT_NONE);
		590	# endif
619		591
620	#else	592	#else
621		593
622	stack->ssize = STACKSIZE * (long)sizeof (long);	594	cctx->ssize = STACKSIZE * (long)sizeof (long);
623	New (0, stack->sptr, STACKSIZE, long);	595	New (0, cctx->sptr, STACKSIZE, long);
624		596
625	if (!stack->sptr)	597	if (!cctx->sptr)
626	{	598	{
627	fprintf (stderr, "FATAL: unable to malloc stack for coroutine\n");	599	perror ("FATAL: unable to malloc stack for coroutine");
628	_exit (EXIT_FAILURE);	600	_exit (EXIT_FAILURE);
629	}	601	}
630		602
631	#endif	603	#endif
632		604
		605	#if USE_VALGRIND
		606	cctx->valgrind_id = VALGRIND_STACK_REGISTER (
		607	STACKGUARD * PAGESIZE + (char *)cctx->sptr,
		608	cctx->ssize + (char *)cctx->sptr
		609	);
		610	#endif
		611
633	coro_create (&stack->cctx, coro_run, 0, stack->sptr, stack->ssize);	612	coro_create (&cctx->cctx, coro_run, (void *)cctx, cctx->sptr, cctx->ssize);
634		613
635	return stack;	614	return cctx;
636	}	615	}
637		616
638	static void	617	static void
639	stack_free (coro_stack *stack)	618	cctx_free (coro_cctx *cctx)
640	{	619	{
641	if (!stack \|\| stack == main_stack)	620	if (!cctx)
642	return;	621	return;
643		622
		623	--cctx_count;
		624
		625	#if USE_VALGRIND
		626	VALGRIND_STACK_DEREGISTER (cctx->valgrind_id);
		627	#endif
		628
644	#if HAVE_MMAP	629	#if HAVE_MMAP
645	munmap (stack->sptr, stack->ssize);	630	munmap (cctx->sptr, cctx->ssize);
646	#else	631	#else
647	Safefree (stack->sptr);	632	Safefree (cctx->sptr);
648	#endif	633	#endif
649		634
650	Safefree (stack);	635	Safefree (cctx);
651	}	636	}
652		637
653	static coro_stack *stack_first;
654
655	static coro_stack *	638	static coro_cctx *
656	stack_get ()	639	cctx_get ()
657	{	640	{
658	coro_stack *stack;	641	coro_cctx *cctx;
659		642
660	if (stack_first)	643	if (cctx_first)
661	{	644	{
662	stack = stack_first;	645	--cctx_idle;
		646	cctx = cctx_first;
663	stack_first = stack->next;	647	cctx_first = cctx->next;
664	}	648	}
665	else	649	else
666	{	650	{
667	stack = stack_new ();	651	cctx = cctx_new ();
668	PL_op = PL_op->op_next;	652	PL_op = PL_op->op_next;
669	}	653	}
670		654
671	return stack;	655	return cctx;
672	}	656	}
673		657
674	static void	658	static void
675	stack_put (coro_stack *stack)	659	cctx_put (coro_cctx *cctx)
676	{	660	{
677	stack->next = stack_first;	661	++cctx_idle;
678	stack_first = stack;	662	cctx->next = cctx_first;
		663	cctx_first = cctx;
679	}	664	}
680		665
681	/* never call directly, always through the coro_state_transfer global variable */	666	/* never call directly, always through the coro_state_transfer global variable */
682	static void	667	static void NOINLINE
683	transfer_impl (pTHX_ struct coro prev, struct coro next, int flags)	668	transfer (struct coro prev, struct coro next, int flags)
684	{	669	{
685	dSTACKLEVEL;	670	dSTACKLEVEL;
686		671
687	/* sometimes transfer is only called to set idle_sp */	672	/* sometimes transfer is only called to set idle_sp */
688	if (!prev->stack->idle_sp)	673	if (flags == TRANSFER_SET_STACKLEVEL)
689	prev->stack->idle_sp = stacklevel;	674	((coro_cctx *)prev)->idle_sp = STACKLEVEL;
690
691	LOCK;
692
693	if (prev != next)	675	else if (prev != next)
694	{	676	{
695	coro_stack *prev_stack = prev->stack;	677	coro_cctx *prev__cctx;
696		678
697	/* possibly "free" the stack */	679	if (!prev->cctx)
698	if (0 && prev_stack->idle_sp == stacklevel)
699	{	680	{
700	stack_put (prev_stack);	681	/* create a new empty context */
701	prev->stack = 0;	682	Newz (0, prev->cctx, 1, coro_cctx);
		683	prev->cctx->inuse = 1;
		684	prev->flags \|= CF_RUNNING;
702	}	685	}
		686
		687	assert ( prev->flags & CF_RUNNING);
		688	assert (!next->flags & CF_RUNNING);
		689
		690	prev->flags &= ~CF_RUNNING;
		691	next->flags \|= CF_RUNNING;
		692
		693	LOCK;
703		694
704	if (next->mainstack)	695	if (next->mainstack)
705	{	696	{
706	/* coroutine already started */	697	/* coroutine already started */
707	SAVE (prev, flags);	698	SAVE (prev, flags);
…		…
712	/* need to start coroutine */	703	/* need to start coroutine */
713	/* first get rid of the old state */	704	/* first get rid of the old state */
714	SAVE (prev, -1);	705	SAVE (prev, -1);
715	/* setup coroutine call */	706	/* setup coroutine call */
716	setup_coro (next);	707	setup_coro (next);
717	/* need to change stack from main_stack to real one */	708	/* need a stack */
		709	assert (!next->stack);
718	next->stack = 0;	710	next->cctx = 0;
719	}	711	}
720		712
		713	prev__cctx = prev->cctx;
		714
		715	/* possibly "free" the cctx */
		716	if (prev__cctx->idle_sp == STACKLEVEL)
		717	{
		718	assert (PL_top_env == prev__cctx->top_env);//D
		719	cctx_put (prev__cctx);
		720	prev->cctx = 0;
		721	}
		722
721	if (!next->stack)	723	if (!next->cctx)
722	next->stack = stack_get ();	724	next->cctx = cctx_get ();
723		725
724	if (prev_stack != next->stack)	726	if (prev__cctx != next->cctx)
		727	{
		728	assert ( prev__cctx->inuse);
		729	assert (!next->cctx->inuse);
		730
		731	prev__cctx->inuse = 0;
		732	next->cctx->inuse = 1;
		733
		734	prev__cctx->top_env = PL_top_env;
		735	PL_top_env = next->cctx->top_env;
725	coro_transfer (&prev_stack->cctx, &next->stack->cctx);	736	coro_transfer (&prev__cctx->cctx, &next->cctx->cctx);
		737	}
		738
		739	free_coro_mortal ();
		740
		741	UNLOCK;
726	}	742	}
727
728	transfer_tail ();
729	}	743	}
730		744
731	/* use this function pointer to call the above function */	745	struct transfer_args
732	/* this is done to increase chances of the compiler not inlining the call */	746	{
733	void (coro_state_transfer)(pTHX_ struct coro prev, struct coro *next, int flags) = transfer_impl;	747	struct coro prev, next;
		748	int flags;
		749	};
		750
		751	#define TRANSFER(ta) transfer ((ta).prev, (ta).next, (ta).flags)
734		752
735	static void	753	static void
736	coro_state_destroy (struct coro *coro)	754	coro_state_destroy (struct coro *coro)
737	{	755	{
738	if (coro->refcnt--)	756	if (coro->refcnt--)
…		…
740		758
741	if (coro->mainstack && coro->mainstack != main_mainstack)	759	if (coro->mainstack && coro->mainstack != main_mainstack)
742	{	760	{
743	struct coro temp;	761	struct coro temp;
744		762
745	SAVE (aTHX_ (&temp), TRANSFER_SAVE_ALL);	763	SAVE ((&temp), TRANSFER_SAVE_ALL);
746	LOAD (aTHX_ coro);	764	LOAD (coro);
747		765
748	destroy_stacks (aTHX);	766	coro_destroy_stacks ();
749		767
750	LOAD ((&temp)); /* this will get rid of defsv etc.. */	768	LOAD ((&temp)); /* this will get rid of defsv etc.. */
751		769
752	coro->mainstack = 0;	770	coro->mainstack = 0;
753	}	771	}
754		772
755	stack_free (coro->stack);	773	cctx_free (coro->cctx);
756	SvREFCNT_dec (coro->args);	774	SvREFCNT_dec (coro->args);
757	Safefree (coro);	775	Safefree (coro);
758	}	776	}
759		777
760	static int	778	static int
761	coro_state_clear (SV sv, MAGIC mg)	779	coro_state_clear (pTHX_ SV sv, MAGIC mg)
762	{	780	{
763	struct coro coro = (struct coro )mg->mg_ptr;	781	struct coro coro = (struct coro )mg->mg_ptr;
764	mg->mg_ptr = 0;	782	mg->mg_ptr = 0;
765		783
766	coro_state_destroy (coro);	784	coro_state_destroy (coro);
767		785
768	return 0;	786	return 0;
769	}	787	}
770		788
771	static int	789	static int
772	coro_state_dup (MAGIC mg, CLONE_PARAMS params)	790	coro_state_dup (pTHX_ MAGIC mg, CLONE_PARAMS params)
773	{	791	{
774	struct coro coro = (struct coro )mg->mg_ptr;	792	struct coro coro = (struct coro )mg->mg_ptr;
775		793
776	++coro->refcnt;	794	++coro->refcnt;
777		795
778	return 0;	796	return 0;
779	}	797	}
780		798
781	static MGVTBL coro_state_vtbl = { 0, 0, 0, 0, coro_state_clear, 0, coro_state_dup, 0 };	799	static MGVTBL coro_state_vtbl = {
		800	0, 0, 0, 0,
		801	coro_state_clear,
		802	0,
		803	#ifdef MGf_DUP
		804	coro_state_dup,
		805	#else
		806	# define MGf_DUP 0
		807	#endif
		808	};
782		809
783	static struct coro *	810	static struct coro *
784	SvSTATE (SV *coro)	811	SvSTATE (SV *coro)
785	{	812	{
786	HV *stash;	813	HV *stash;
…		…
801	assert (mg->mg_type == PERL_MAGIC_ext);	828	assert (mg->mg_type == PERL_MAGIC_ext);
802	return (struct coro *)mg->mg_ptr;	829	return (struct coro *)mg->mg_ptr;
803	}	830	}
804		831
805	static void	832	static void
		833	prepare_transfer (struct transfer_args ta, SV prev, SV *next, int flags)
		834	{
		835	ta->prev = SvSTATE (prev);
		836	ta->next = SvSTATE (next);
		837	ta->flags = flags;
		838	}
		839
		840	static void
806	api_transfer (pTHX_ SV prev, SV next, int flags)	841	api_transfer (SV prev, SV next, int flags)
807	{	842	{
808	coro_state_transfer (aTHX_ SvSTATE (prev), SvSTATE (next), flags);	843	dTHX;
		844	struct transfer_args ta;
		845
		846	prepare_transfer (&ta, prev, next, flags);
		847	TRANSFER (ta);
809	}	848	}
810		849
811	/ Coro ******************************************************************/	850	/ Coro ******************************************************************/
812		851
813	#define PRIO_MAX 3	852	#define PRIO_MAX 3
…		…
821	static GV coro_current, coro_idle;	860	static GV coro_current, coro_idle;
822	static AV *coro_ready [PRIO_MAX-PRIO_MIN+1];	861	static AV *coro_ready [PRIO_MAX-PRIO_MIN+1];
823	static int coro_nready;	862	static int coro_nready;
824		863
825	static void	864	static void
826	coro_enq (pTHX_ SV *sv)	865	coro_enq (SV *sv)
827	{	866	{
828	int prio;	867	int prio;
829		868
830	if (SvTYPE (sv) != SVt_PVHV)	869	if (SvTYPE (sv) != SVt_PVHV)
831	croak ("Coro::ready tried to enqueue something that is not a coroutine");	870	croak ("Coro::ready tried to enqueue something that is not a coroutine");
…		…
835	av_push (coro_ready [prio - PRIO_MIN], sv);	874	av_push (coro_ready [prio - PRIO_MIN], sv);
836	coro_nready++;	875	coro_nready++;
837	}	876	}
838		877
839	static SV *	878	static SV *
840	coro_deq (pTHX_ int min_prio)	879	coro_deq (int min_prio)
841	{	880	{
842	int prio = PRIO_MAX - PRIO_MIN;	881	int prio = PRIO_MAX - PRIO_MIN;
843		882
844	min_prio -= PRIO_MIN;	883	min_prio -= PRIO_MIN;
845	if (min_prio < 0)	884	if (min_prio < 0)
…		…
853	}	892	}
854		893
855	return 0;	894	return 0;
856	}	895	}
857		896
858	static void	897	static int
859	api_ready (SV *coro)	898	api_ready (SV *coro_sv)
860	{	899	{
861	dTHX;	900	struct coro *coro;
862		901
863	if (SvROK (coro))	902	if (SvROK (coro_sv))
864	coro = SvRV (coro);	903	coro_sv = SvRV (coro_sv);
		904
		905	coro = SvSTATE (coro_sv);
		906	if (coro->flags & CF_READY)
		907	return 0;
		908
		909	coro->flags \|= CF_READY;
865		910
866	LOCK;	911	LOCK;
867	coro_enq (aTHX_ SvREFCNT_inc (coro));	912	coro_enq (SvREFCNT_inc (coro_sv));
868	UNLOCK;	913	UNLOCK;
869	}
870		914
		915	return 1;
		916	}
		917
871	static void	918	static int
872	api_schedule (void)	919	api_is_ready (SV *coro_sv)
873	{	920	{
874	dTHX;	921	struct coro *coro;
875		922
		923	return !!(SvSTATE (coro_sv)->flags & CF_READY);
		924	}
		925
		926	static void
		927	prepare_schedule (struct transfer_args *ta)
		928	{
876	SV prev, next;	929	SV current, prev, *next;
		930
877	SV *current = GvSV (coro_current);	931	current = GvSV (coro_current);
878		932
879	for (;;)	933	for (;;)
880	{	934	{
881	LOCK;	935	LOCK;
882
883	next = coro_deq (aTHX_ PRIO_MIN);	936	next = coro_deq (PRIO_MIN);
		937	UNLOCK;
884		938
885	if (next)	939	if (next)
886	break;	940	break;
887
888	UNLOCK;
889		941
890	{	942	{
891	dSP;	943	dSP;
892		944
893	ENTER;	945	ENTER;
…		…
904		956
905	prev = SvRV (current);	957	prev = SvRV (current);
906	SvRV (current) = next;	958	SvRV (current) = next;
907		959
908	/* free this only after the transfer */	960	/* free this only after the transfer */
		961	LOCK;
		962	free_coro_mortal ();
		963	UNLOCK;
909	coro_mortal = prev;	964	coro_mortal = prev;
910		965
911	UNLOCK;	966	ta->prev = SvSTATE (prev);
		967	ta->next = SvSTATE (next);
		968	ta->flags = TRANSFER_SAVE_ALL;
912		969
913	coro_state_transfer (aTHX_ SvSTATE (prev), SvSTATE (next), TRANSFER_SAVE_ALL);	970	ta->next->flags &= ~CF_READY;
914	}	971	}
915		972
916	static int coro_cede_self;	973	static void
		974	prepare_cede (struct transfer_args *ta)
		975	{
		976	api_ready (GvSV (coro_current));
		977
		978	prepare_schedule (ta);
		979	}
		980
		981	static void
		982	api_schedule (void)
		983	{
		984	dTHX;
		985	struct transfer_args ta;
		986
		987	prepare_schedule (&ta);
		988	TRANSFER (ta);
		989	}
917		990
918	static void	991	static void
919	api_cede (void)	992	api_cede (void)
920	{	993	{
921	dTHX;	994	dTHX;
922	SV *current = SvREFCNT_inc (SvRV (GvSV (coro_current)));	995	struct transfer_args ta;
923		996
924	LOCK;	997	prepare_cede (&ta);
925		998	TRANSFER (ta);
926	if (coro_cede_self)
927	{
928	AV *runqueue = coro_ready [PRIO_MAX - PRIO_MIN];
929	av_unshift (runqueue, 1);
930	av_store (runqueue, 0, current);
931	coro_nready++;
932	coro_cede_self = 0;
933	}
934	else
935	coro_enq (aTHX_ current);
936
937	UNLOCK;
938
939	api_schedule ();
940	}	999	}
941		1000
942	MODULE = Coro::State PACKAGE = Coro::State	1001	MODULE = Coro::State PACKAGE = Coro::State
943		1002
944	PROTOTYPES: DISABLE	1003	PROTOTYPES: DISABLE
…		…
959	main_mainstack = PL_mainstack;	1018	main_mainstack = PL_mainstack;
960		1019
961	coroapi.ver = CORO_API_VERSION;	1020	coroapi.ver = CORO_API_VERSION;
962	coroapi.transfer = api_transfer;	1021	coroapi.transfer = api_transfer;
963		1022
964	Newz (0, main_stack, 1, coro_stack);
965	main_stack->idle_sp = (void *)-1;
966
967	assert (("PRIO_NORMAL must be 0", !PRIO_NORMAL));	1023	assert (("PRIO_NORMAL must be 0", !PRIO_NORMAL));
968	}	1024	}
969		1025
970	SV *	1026	SV *
971	new (char *klass, ...)	1027	new (char *klass, ...)
…		…
980		1036
981	hv = newHV ();	1037	hv = newHV ();
982	sv_magicext ((SV )hv, 0, PERL_MAGIC_ext, &coro_state_vtbl, (char )coro, 0)->mg_flags \|= MGf_DUP;	1038	sv_magicext ((SV )hv, 0, PERL_MAGIC_ext, &coro_state_vtbl, (char )coro, 0)->mg_flags \|= MGf_DUP;
983	RETVAL = sv_bless (newRV_noinc ((SV *)hv), gv_stashpv (klass, 1));	1039	RETVAL = sv_bless (newRV_noinc ((SV *)hv), gv_stashpv (klass, 1));
984		1040
985	av_push (coro->args, newSVsv (RETVAL));
986	for (i = 1; i < items; i++)	1041	for (i = 1; i < items; i++)
987	av_push (coro->args, newSVsv (ST (i)));	1042	av_push (coro->args, newSVsv (ST (i)));
988
989	coro->stack = main_stack;
990	/coro->mainstack = 0; //actual work is done inside transfer /
991	/coro->stack = 0;/
992	}	1043	}
993	OUTPUT:	1044	OUTPUT:
994	RETVAL	1045	RETVAL
995		1046
996	void	1047	void
997	transfer (prev, next, flags)	1048	_set_stacklevel (...)
998	SV *prev	1049	ALIAS:
999	SV *next	1050	Coro::State::transfer = 1
1000	int flags	1051	Coro::schedule = 2
		1052	Coro::cede = 3
		1053	Coro::Cont::yield = 4
1001	CODE:	1054	CODE:
1002	PUTBACK;
1003	coro_state_transfer (aTHX_ SvSTATE (prev), SvSTATE (next), flags);
1004	SPAGAIN;
1005
1006	int
1007	prio (Coro::State coro, int newprio = 0)
1008	ALIAS:
1009	nice = 1
1010	CODE:
1011	{	1055	{
1012	RETVAL = coro->prio;	1056	struct transfer_args ta;
1013		1057
1014	if (items > 1)	1058	switch (ix)
1015	{	1059	{
		1060	case 0:
		1061	ta.prev = (struct coro )INT2PTR (coro_cctx , SvIV (ST (0)));
		1062	ta.next = 0;
		1063	ta.flags = TRANSFER_SET_STACKLEVEL;
		1064	break;
		1065
		1066	case 1:
1016	if (ix)	1067	if (items != 3)
1017	newprio += coro->prio;	1068	croak ("Coro::State::transfer(prev,next,flags) expects three arguments, not %d", items);
1018		1069
1019	if (newprio < PRIO_MIN) newprio = PRIO_MIN;	1070	prepare_transfer (&ta, ST (0), ST (1), SvIV (ST (2)));
1020	if (newprio > PRIO_MAX) newprio = PRIO_MAX;	1071	break;
1021		1072
1022	coro->prio = newprio;	1073	case 2:
		1074	prepare_schedule (&ta);
		1075	break;
		1076
		1077	case 3:
		1078	prepare_cede (&ta);
		1079	break;
		1080
		1081	case 4:
		1082	{
		1083	SV *yieldstack;
		1084	SV *sv;
		1085	AV *defav = GvAV (PL_defgv);
		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	ta.prev = SvSTATE (av_fetch ((AV )SvRV (sv), 0, 0));
		1101	ta.next = SvSTATE (av_fetch ((AV )SvRV (sv), 1, 0));
		1102	ta.flags = 0;
		1103	SvREFCNT_dec (sv);
		1104	}
		1105	break;
		1106
1023	}	1107	}
1024	}
1025		1108
1026	void	1109	TRANSFER (ta);
1027	_clear_idle_sp (Coro::State self)	1110	}
1028	CODE:
1029	self->stack->idle_sp = 0;
1030		1111
1031	void	1112	void
1032	_clone_state_from (SV dst, SV src)	1113	_clone_state_from (SV dst, SV src)
1033	CODE:	1114	CODE:
1034	{	1115	{
…		…
1045	int code	1126	int code
1046	PROTOTYPE: $	1127	PROTOTYPE: $
1047	CODE:	1128	CODE:
1048	_exit (code);	1129	_exit (code);
1049		1130
1050	MODULE = Coro::State PACKAGE = Coro::Cont	1131	int
		1132	cctx_count ()
		1133	CODE:
		1134	RETVAL = cctx_count;
		1135	OUTPUT:
		1136	RETVAL
1051		1137
1052	void	1138	int
1053	yield (...)	1139	cctx_idle ()
1054	PROTOTYPE: @	1140	CODE:
1055	CODE:	1141	RETVAL = cctx_idle;
1056	{	1142	OUTPUT:
1057	SV *yieldstack;	1143	RETVAL
1058	SV *sv;
1059	AV *defav = GvAV (PL_defgv);
1060	struct coro prev, next;
1061
1062	yieldstack = *hv_fetch (
1063	(HV *)SvRV (GvSV (coro_current)),
1064	"yieldstack", sizeof ("yieldstack") - 1,
1065	0
1066	);
1067
1068	/* set up @_ -- ugly */
1069	av_clear (defav);
1070	av_fill (defav, items - 1);
1071	while (items--)
1072	av_store (defav, items, SvREFCNT_inc (ST(items)));
1073
1074	sv = av_pop ((AV *)SvRV (yieldstack));
1075	prev = SvSTATE (av_fetch ((AV )SvRV (sv), 0, 0));
1076	next = SvSTATE (av_fetch ((AV )SvRV (sv), 1, 0));
1077	SvREFCNT_dec (sv);
1078
1079	coro_state_transfer (aTHX_ prev, next, 0);
1080	}
1081		1144
1082	MODULE = Coro::State PACKAGE = Coro	1145	MODULE = Coro::State PACKAGE = Coro
1083		1146
1084	BOOT:	1147	BOOT:
1085	{	1148	{
…		…
1104	SV *sv = perl_get_sv("Coro::API", 1);	1167	SV *sv = perl_get_sv("Coro::API", 1);
1105		1168
1106	coroapi.schedule = api_schedule;	1169	coroapi.schedule = api_schedule;
1107	coroapi.cede = api_cede;	1170	coroapi.cede = api_cede;
1108	coroapi.ready = api_ready;	1171	coroapi.ready = api_ready;
		1172	coroapi.is_ready = api_is_ready;
1109	coroapi.nready = &coro_nready;	1173	coroapi.nready = &coro_nready;
1110	coroapi.current = coro_current;	1174	coroapi.current = coro_current;
1111		1175
1112	GCoroAPI = &coroapi;	1176	GCoroAPI = &coroapi;
1113	sv_setiv (sv, (IV)&coroapi);	1177	sv_setiv (sv, (IV)&coroapi);
1114	SvREADONLY_on (sv);	1178	SvREADONLY_on (sv);
1115	}	1179	}
1116	}	1180	}
1117		1181
1118	void	1182	int
		1183	prio (Coro::State coro, int newprio = 0)
		1184	ALIAS:
		1185	nice = 1
		1186	CODE:
		1187	{
		1188	RETVAL = coro->prio;
		1189
		1190	if (items > 1)
		1191	{
		1192	if (ix)
		1193	newprio += coro->prio;
		1194
		1195	if (newprio < PRIO_MIN) newprio = PRIO_MIN;
		1196	if (newprio > PRIO_MAX) newprio = PRIO_MAX;
		1197
		1198	coro->prio = newprio;
		1199	}
		1200	}
		1201
		1202	SV *
1119	ready (SV *self)	1203	ready (SV *self)
1120	PROTOTYPE: $	1204	PROTOTYPE: $
1121	CODE:	1205	CODE:
1122	api_ready (self);	1206	RETVAL = boolSV (api_ready (self));
		1207	OUTPUT:
		1208	RETVAL
		1209
		1210	SV *
		1211	is_ready (SV *self)
		1212	PROTOTYPE: $
		1213	CODE:
		1214	RETVAL = boolSV (api_is_ready (self));
		1215	OUTPUT:
		1216	RETVAL
1123		1217
1124	int	1218	int
1125	nready (...)	1219	nready (...)
1126	PROTOTYPE:	1220	PROTOTYPE:
1127	CODE:	1221	CODE:
1128	RETVAL = coro_nready;	1222	RETVAL = coro_nready;
1129	OUTPUT:	1223	OUTPUT:
1130	RETVAL	1224	RETVAL
1131		1225
1132	void
1133	schedule (...)
1134	PROTOTYPE:
1135	CODE:
1136	api_schedule ();
1137
1138	void
1139	_set_cede_self ()
1140	CODE:
1141	coro_cede_self = 1;
1142
1143	void
1144	cede (...)
1145	PROTOTYPE:
1146	CODE:
1147	api_cede ();
1148
1149	MODULE = Coro::State PACKAGE = Coro::AIO	1226	MODULE = Coro::State PACKAGE = Coro::AIO
1150		1227
1151	SV *	1228	SV *
1152	_get_state ()	1229	_get_state ()
1153	CODE:	1230	CODE:

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Comparing Coro/Coro/State.xs (file contents): Revision 1.91 by root, Sat Nov 25 01:14:11 2006 UTC vs. Revision 1.111 by root, Thu Nov 30 18:21:14 2006 UTC

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Comparing Coro/Coro/State.xs (file contents):
Revision 1.91 by root, Sat Nov 25 01:14:11 2006 UTC vs.
Revision 1.111 by root, Thu Nov 30 18:21:14 2006 UTC