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

Comparing Coro/Coro/State.xs (file contents):
Revision 1.92 by root, Sun Nov 26 02:16:19 2006 UTC vs.
Revision 1.118 by root, Fri Dec 1 19:58:53 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	/* the maximum number of idle cctx that will be pooled */
		14	#define MAX_IDLE_CCTX 8
		15
		16	#define PERL_VERSION_ATLEAST(a,b,c) \
		17	(PERL_REVISION > (a) \
		18	\|\| (PERL_REVISION == (a) \
		19	&& (PERL_VERSION > (b) \
		20	\|\| (PERL_VERSION == (b) && PERLSUBVERSION >= (c)))))
		21
		22	#if !PERL_VERSION_ATLEAST (5,6,0)
12	# ifndef PL_ppaddr	23	# ifndef PL_ppaddr
13	# define PL_ppaddr ppaddr	24	# define PL_ppaddr ppaddr
14	# endif	25	# endif
15	# ifndef call_sv	26	# ifndef call_sv
16	# define call_sv perl_call_sv	27	# define call_sv perl_call_sv
54	# ifndef PAGESIZE	65	# ifndef PAGESIZE
55	# define PAGESIZE pagesize	66	# define PAGESIZE pagesize
56	# define BOOT_PAGESIZE pagesize = sysconf (_SC_PAGESIZE)	67	# define BOOT_PAGESIZE pagesize = sysconf (_SC_PAGESIZE)
57	static long pagesize;	68	static long pagesize;
58	# else	69	# else
59	# define BOOT_PAGESIZE	70	# define BOOT_PAGESIZE (void)0
60	# endif	71	# endif
		72	#else
		73	# define PAGESIZE 0
		74	# define BOOT_PAGESIZE (void)0
61	#endif	75	#endif
62		76
63	/* The next macro should declare a variable stacklevel that contains and approximation	77	/* The next macro should declare a variable stacklevel that contains and approximation
64	* to the current C stack pointer. Its property is that it changes with each call	78	* to the current C stack pointer. Its property is that it changes with each call
65	* and should be unique. */	79	* and should be unique. */
66	#define dSTACKLEVEL int stacklevel	80	#define dSTACKLEVEL int stacklevel
67	#define STACKLEVEL ((void *)&stacklevel)	81	#define STACKLEVEL ((void *)&stacklevel)
68		82
69	#define IN_DESTRUCT (PL_main_cv == Nullcv)	83	#define IN_DESTRUCT (PL_main_cv == Nullcv)
70		84
71	#define labs(l) ((l) >= 0 ? (l) : -(l))	85	#if __GNUC__ >= 3
		86	# define attribute(x) __attribute__(x)
		87	#else
		88	# define attribute(x)
		89	#endif
		90
		91	#define NOINLINE attribute ((noinline))
72		92
73	#include "CoroAPI.h"	93	#include "CoroAPI.h"
74		94
75	#define TRANSFER_SET_STACKLEVEL 0x8bfbfbfb /* magic cookie */	95	#define TRANSFER_SET_STACKLEVEL 0x8bfbfbfb /* magic cookie */
76		96
…		…
86	static struct CoroAPI coroapi;	106	static struct CoroAPI coroapi;
87	static AV main_mainstack; / used to differentiate between $main and others */	107	static AV main_mainstack; / used to differentiate between $main and others */
88	static HV coro_state_stash, coro_stash;	108	static HV coro_state_stash, coro_stash;
89	static SV coro_mortal; / will be freed after next transfer */	109	static SV coro_mortal; / will be freed after next transfer */
90		110
		111	static struct coro_cctx *cctx_first;
		112	static int cctx_count, cctx_idle;
		113
91	/* this is a structure representing a c-level coroutine */	114	/* this is a structure representing a c-level coroutine */
92	typedef struct coro_stack {	115	typedef struct coro_cctx {
93	struct coro_stack *next;	116	struct coro_cctx *next;
94		117
95	void idle_sp; / original stacklevel when coroutine was created */	118	/* the stack */
96	void *sptr;	119	void *sptr;
97	long ssize; /* positive == mmap, otherwise malloc */	120	long ssize; /* positive == mmap, otherwise malloc */
98		121
99	/* cpu state */	122	/* cpu state */
		123	void idle_sp; / sp of top-level transfer/schedule/cede call */
		124	JMPENV *top_env;
100	coro_context cctx;	125	coro_context cctx;
101	JMPENV *top_env;
102	} coro_stack;
103		126
104	/* the (fake) coro_stack representing the main program */	127	int inuse;
105	static coro_stack *main_stack;	128
		129	#if USE_VALGRIND
		130	int valgrind_id;
		131	#endif
		132	} coro_cctx;
		133
		134	enum {
		135	CF_RUNNING = 0x0001, /* coroutine is running */
		136	CF_READY = 0x0002, /* coroutine is ready */
		137	CF_NEW = 0x0004, /* ahs never been switched to */
		138	};
106		139
107	/* this is a structure representing a perl-level coroutine */	140	/* this is a structure representing a perl-level coroutine */
108	struct coro {	141	struct coro {
109	/* the c coroutine allocated to this perl coroutine, if any */	142	/* the c coroutine allocated to this perl coroutine, if any */
110	coro_stack *stack;	143	coro_cctx *cctx;
111		144
112	/* data associated with this coroutine (initial args) */	145	/* data associated with this coroutine (initial args) */
113	AV *args;	146	AV *args;
114	int refcnt;	147	int refcnt;
		148	int flags;
115		149
116	/* optionally saved, might be zero */	150	/* optionally saved, might be zero */
117	AV *defav;	151	AV *defav;
118	SV *defsv;	152	SV *defsv;
119	SV *errsv;	153	SV *errsv;
120		154
121	/* saved global state not related to stacks */	155	#define VAR(name,type) type name;
122	U8 dowarn;	156	# include "state.h"
123	I32 in_eval;	157	#undef VAR
124
125	/* the stacks and related info (callchain etc..) */
126	PERL_SI *curstackinfo;
127	AV *curstack;
128	AV *mainstack;
129	SV **stack_sp;
130	OP *op;
131	SV **curpad;
132	AV *comppad;
133	CV *compcv;
134	SV **stack_base;
135	SV **stack_max;
136	SV **tmps_stack;
137	I32 tmps_floor;
138	I32 tmps_ix;
139	I32 tmps_max;
140	I32 *markstack;
141	I32 *markstack_ptr;
142	I32 *markstack_max;
143	I32 *scopestack;
144	I32 scopestack_ix;
145	I32 scopestack_max;
146	ANY *savestack;
147	I32 savestack_ix;
148	I32 savestack_max;
149	OP **retstack;
150	I32 retstack_ix;
151	I32 retstack_max;
152	PMOP *curpm;
153	COP *curcop;
154		158
155	/* coro process data */	159	/* coro process data */
156	int prio;	160	int prio;
157	};	161	};
158		162
159	typedef struct coro *Coro__State;	163	typedef struct coro *Coro__State;
160	typedef struct coro *Coro__State_or_hashref;	164	typedef struct coro *Coro__State_or_hashref;
161		165
162	static AV *	166	static AV *
163	coro_clone_padlist (pTHX_ CV *cv)	167	coro_clone_padlist (CV *cv)
164	{	168	{
165	AV *padlist = CvPADLIST (cv);	169	AV *padlist = CvPADLIST (cv);
166	AV newpadlist, newpad;	170	AV newpadlist, newpad;
167		171
168	newpadlist = newAV ();	172	newpadlist = newAV ();
169	AvREAL_off (newpadlist);	173	AvREAL_off (newpadlist);
170	#if PERL_VERSION < 9	174	#if PERL_VERSION_ATLEAST (5,9,0)
		175	Perl_pad_push (aTHX_ padlist, AvFILLp (padlist) + 1);
		176	#else
171	Perl_pad_push (aTHX_ padlist, AvFILLp (padlist) + 1, 1);	177	Perl_pad_push (aTHX_ padlist, AvFILLp (padlist) + 1, 1);
172	#else
173	Perl_pad_push (aTHX_ padlist, AvFILLp (padlist) + 1);
174	#endif	178	#endif
175	newpad = (AV *)AvARRAY (padlist)[AvFILLp (padlist)];	179	newpad = (AV *)AvARRAY (padlist)[AvFILLp (padlist)];
176	--AvFILLp (padlist);	180	--AvFILLp (padlist);
177		181
178	av_store (newpadlist, 0, SvREFCNT_inc (*av_fetch (padlist, 0, FALSE)));	182	av_store (newpadlist, 0, SvREFCNT_inc (*av_fetch (padlist, 0, FALSE)));
…		…
180		184
181	return newpadlist;	185	return newpadlist;
182	}	186	}
183		187
184	static void	188	static void
185	free_padlist (pTHX_ AV *padlist)	189	free_padlist (AV *padlist)
186	{	190	{
187	/* may be during global destruction */	191	/* may be during global destruction */
188	if (SvREFCNT (padlist))	192	if (SvREFCNT (padlist))
189	{	193	{
190	I32 i = AvFILLp (padlist);	194	I32 i = AvFILLp (padlist);
…		…
211	AV *padlist;	215	AV *padlist;
212	AV av = (AV )mg->mg_obj;	216	AV av = (AV )mg->mg_obj;
213		217
214	/* casting is fun. */	218	/* casting is fun. */
215	while (&PL_sv_undef != (SV )(padlist = (AV )av_pop (av)))	219	while (&PL_sv_undef != (SV )(padlist = (AV )av_pop (av)))
216	free_padlist (aTHX_ padlist);	220	free_padlist (padlist);
217		221
218	SvREFCNT_dec (av);	222	SvREFCNT_dec (av);
219		223
220	return 0;	224	return 0;
221	}	225	}
222		226
223	#define PERL_MAGIC_coro PERL_MAGIC_ext	227	#define PERL_MAGIC_coro PERL_MAGIC_ext
224		228
225	static MGVTBL vtbl_coro = {0, 0, 0, 0, coro_cv_free};	229	static MGVTBL vtbl_coro = {0, 0, 0, 0, coro_cv_free};
226		230
		231	#define CORO_MAGIC(cv) \
		232	SvMAGIC (cv) \
		233	? SvMAGIC (cv)->mg_type == PERL_MAGIC_coro \
		234	? SvMAGIC (cv) \
		235	: mg_find ((SV *)cv, PERL_MAGIC_coro) \
		236	: 0
		237
227	/* the next two functions merely cache the padlists */	238	/* the next two functions merely cache the padlists */
228	static void	239	static void
229	get_padlist (pTHX_ CV *cv)	240	get_padlist (CV *cv)
230	{	241	{
231	MAGIC mg = mg_find ((SV )cv, PERL_MAGIC_coro);	242	MAGIC *mg = CORO_MAGIC (cv);
		243	AV *av;
232		244
233	if (mg && AvFILLp ((AV *)mg->mg_obj) >= 0)	245	if (mg && AvFILLp ((av = (AV *)mg->mg_obj)) >= 0)
234	CvPADLIST (cv) = (AV )av_pop ((AV )mg->mg_obj);	246	CvPADLIST (cv) = (AV *)AvARRAY (av)[AvFILLp (av)--];
235	else	247	else
236	{	248	{
237	#if 0	249	#if 0
238	/* this should work - but it doesn't :( */	250	/* this is probably cleaner, but also slower? */
239	CV *cp = Perl_cv_clone (aTHX_ cv);	251	CV *cp = Perl_cv_clone (cv);
240	CvPADLIST (cv) = CvPADLIST (cp);	252	CvPADLIST (cv) = CvPADLIST (cp);
241	CvPADLIST (cp) = 0;	253	CvPADLIST (cp) = 0;
242	SvREFCNT_dec (cp);	254	SvREFCNT_dec (cp);
243	#else	255	#else
244	CvPADLIST (cv) = coro_clone_padlist (aTHX_ cv);	256	CvPADLIST (cv) = coro_clone_padlist (cv);
245	#endif	257	#endif
246	}	258	}
247	}	259	}
248		260
249	static void	261	static void
250	put_padlist (pTHX_ CV *cv)	262	put_padlist (CV *cv)
251	{	263	{
252	MAGIC mg = mg_find ((SV )cv, PERL_MAGIC_coro);	264	MAGIC *mg = CORO_MAGIC (cv);
		265	AV *av;
253		266
254	if (!mg)	267	if (!mg)
255	{	268	{
256	sv_magic ((SV *)cv, 0, PERL_MAGIC_coro, 0, 0);	269	sv_magic ((SV *)cv, 0, PERL_MAGIC_coro, 0, 0);
257	mg = mg_find ((SV *)cv, PERL_MAGIC_coro);	270	mg = mg_find ((SV *)cv, PERL_MAGIC_coro);
258	mg->mg_virtual = &vtbl_coro;	271	mg->mg_virtual = &vtbl_coro;
259	mg->mg_obj = (SV *)newAV ();	272	mg->mg_obj = (SV *)newAV ();
260	}	273	}
261		274
262	av_push ((AV )mg->mg_obj, (SV )CvPADLIST (cv));	275	av = (AV *)mg->mg_obj;
		276
		277	if (AvFILLp (av) >= AvMAX (av))
		278	av_extend (av, AvMAX (av) + 1);
		279
		280	AvARRAY (av)[++AvFILLp (av)] = (SV *)CvPADLIST (cv);
263	}	281	}
264		282
265	#define SB do {	283	#define SB do {
266	#define SE } while (0)	284	#define SE } while (0)
267		285
268	#define LOAD(state) load_state(aTHX_ (state));	286	#define LOAD(state) load_state ((state))
269	#define SAVE(state,flags) save_state(aTHX_ (state),(flags));	287	#define SAVE(state,flags) save_state ((state),(flags))
270		288
271	#define REPLACE_SV(sv,val) SB SvREFCNT_dec(sv); (sv) = (val); (val) = 0; SE	289	#define REPLACE_SV(sv,val) SB SvREFCNT_dec (sv); (sv) = (val); (val) = 0; SE
272		290
273	static void	291	static void
274	load_state(pTHX_ Coro__State c)	292	load_state (Coro__State c)
275	{	293	{
276	PL_dowarn = c->dowarn;	294	#define VAR(name,type) PL_ ## name = c->name;
277	PL_in_eval = c->in_eval;	295	# include "state.h"
278		296	#undef VAR
279	PL_curstackinfo = c->curstackinfo;
280	PL_curstack = c->curstack;
281	PL_mainstack = c->mainstack;
282	PL_stack_sp = c->stack_sp;
283	PL_op = c->op;
284	PL_curpad = c->curpad;
285	PL_comppad = c->comppad;
286	PL_compcv = c->compcv;
287	PL_stack_base = c->stack_base;
288	PL_stack_max = c->stack_max;
289	PL_tmps_stack = c->tmps_stack;
290	PL_tmps_floor = c->tmps_floor;
291	PL_tmps_ix = c->tmps_ix;
292	PL_tmps_max = c->tmps_max;
293	PL_markstack = c->markstack;
294	PL_markstack_ptr = c->markstack_ptr;
295	PL_markstack_max = c->markstack_max;
296	PL_scopestack = c->scopestack;
297	PL_scopestack_ix = c->scopestack_ix;
298	PL_scopestack_max = c->scopestack_max;
299	PL_savestack = c->savestack;
300	PL_savestack_ix = c->savestack_ix;
301	PL_savestack_max = c->savestack_max;
302	#if PERL_VERSION < 9
303	PL_retstack = c->retstack;
304	PL_retstack_ix = c->retstack_ix;
305	PL_retstack_max = c->retstack_max;
306	#endif
307	PL_curpm = c->curpm;
308	PL_curcop = c->curcop;
309		297
310	if (c->defav) REPLACE_SV (GvAV (PL_defgv), c->defav);	298	if (c->defav) REPLACE_SV (GvAV (PL_defgv), c->defav);
311	if (c->defsv) REPLACE_SV (DEFSV , c->defsv);	299	if (c->defsv) REPLACE_SV (DEFSV , c->defsv);
312	if (c->errsv) REPLACE_SV (ERRSV , c->errsv);	300	if (c->errsv) REPLACE_SV (ERRSV , c->errsv);
313		301
…		…
316	CV *cv;	304	CV *cv;
317		305
318	/* now do the ugly restore mess */	306	/* now do the ugly restore mess */
319	while ((cv = (CV *)POPs))	307	while ((cv = (CV *)POPs))
320	{	308	{
321	AV padlist = (AV )POPs;
322
323	if (padlist)
324	{
325	put_padlist (aTHX_ cv); /* mark this padlist as available */	309	put_padlist (cv); /* mark this padlist as available */
326	CvPADLIST(cv) = padlist;	310	CvDEPTH (cv) = PTR2IV (POPs);
327	}	311	CvPADLIST (cv) = (AV *)POPs;
328
329	++CvDEPTH(cv);
330	}	312	}
331		313
332	PUTBACK;	314	PUTBACK;
333	}	315	}
334	}	316	}
335		317
336	static void	318	static void
337	save_state(pTHX_ Coro__State c, int flags)	319	save_state (Coro__State c, int flags)
338	{	320	{
339	{	321	{
340	dSP;	322	dSP;
341	I32 cxix = cxstack_ix;	323	I32 cxix = cxstack_ix;
342	PERL_CONTEXT *ccstk = cxstack;	324	PERL_CONTEXT *ccstk = cxstack;
…		…
353	{	335	{
354	while (cxix >= 0)	336	while (cxix >= 0)
355	{	337	{
356	PERL_CONTEXT *cx = &ccstk[cxix--];	338	PERL_CONTEXT *cx = &ccstk[cxix--];
357		339
358	if (CxTYPE(cx) == CXt_SUB)	340	if (CxTYPE (cx) == CXt_SUB)
359	{	341	{
360	CV *cv = cx->blk_sub.cv;	342	CV *cv = cx->blk_sub.cv;
		343
361	if (CvDEPTH(cv))	344	if (CvDEPTH (cv))
362	{	345	{
363	EXTEND (SP, CvDEPTH(cv)*2);	346	EXTEND (SP, 3);
364		347
365	while (--CvDEPTH(cv))
366	{
367	/* this tells the restore code to increment CvDEPTH */
368	PUSHs (Nullsv);
369	PUSHs ((SV *)cv);
370	}
371
372	PUSHs ((SV *)CvPADLIST(cv));	348	PUSHs ((SV *)CvPADLIST (cv));
		349	PUSHs (INT2PTR (SV *, CvDEPTH (cv)));
373	PUSHs ((SV *)cv);	350	PUSHs ((SV *)cv);
374		351
		352	CvDEPTH (cv) = 0;
375	get_padlist (aTHX_ cv);	353	get_padlist (cv);
376	}	354	}
377	}	355	}
378	#ifdef CXt_FORMAT	356	#ifdef CXt_FORMAT
379	else if (CxTYPE(cx) == CXt_FORMAT)	357	else if (CxTYPE (cx) == CXt_FORMAT)
380	{	358	{
381	/* I never used formats, so how should I know how these are implemented? */	359	/* I never used formats, so how should I know how these are implemented? */
382	/* my bold guess is as a simple, plain sub... */	360	/* my bold guess is as a simple, plain sub... */
383	croak ("CXt_FORMAT not yet handled. Don't switch coroutines from within formats");	361	croak ("CXt_FORMAT not yet handled. Don't switch coroutines from within formats");
384	}	362	}
…		…
398		376
399	c->defav = flags & TRANSFER_SAVE_DEFAV ? (AV *)SvREFCNT_inc (GvAV (PL_defgv)) : 0;	377	c->defav = flags & TRANSFER_SAVE_DEFAV ? (AV *)SvREFCNT_inc (GvAV (PL_defgv)) : 0;
400	c->defsv = flags & TRANSFER_SAVE_DEFSV ? SvREFCNT_inc (DEFSV) : 0;	378	c->defsv = flags & TRANSFER_SAVE_DEFSV ? SvREFCNT_inc (DEFSV) : 0;
401	c->errsv = flags & TRANSFER_SAVE_ERRSV ? SvREFCNT_inc (ERRSV) : 0;	379	c->errsv = flags & TRANSFER_SAVE_ERRSV ? SvREFCNT_inc (ERRSV) : 0;
402		380
403	c->dowarn = PL_dowarn;	381	#define VAR(name,type)c->name = PL_ ## name;
404	c->in_eval = PL_in_eval;	382	# include "state.h"
405		383	#undef VAR
406	c->curstackinfo = PL_curstackinfo;
407	c->curstack = PL_curstack;
408	c->mainstack = PL_mainstack;
409	c->stack_sp = PL_stack_sp;
410	c->op = PL_op;
411	c->curpad = PL_curpad;
412	c->comppad = PL_comppad;
413	c->compcv = PL_compcv;
414	c->stack_base = PL_stack_base;
415	c->stack_max = PL_stack_max;
416	c->tmps_stack = PL_tmps_stack;
417	c->tmps_floor = PL_tmps_floor;
418	c->tmps_ix = PL_tmps_ix;
419	c->tmps_max = PL_tmps_max;
420	c->markstack = PL_markstack;
421	c->markstack_ptr = PL_markstack_ptr;
422	c->markstack_max = PL_markstack_max;
423	c->scopestack = PL_scopestack;
424	c->scopestack_ix = PL_scopestack_ix;
425	c->scopestack_max = PL_scopestack_max;
426	c->savestack = PL_savestack;
427	c->savestack_ix = PL_savestack_ix;
428	c->savestack_max = PL_savestack_max;
429	#if PERL_VERSION < 9
430	c->retstack = PL_retstack;
431	c->retstack_ix = PL_retstack_ix;
432	c->retstack_max = PL_retstack_max;
433	#endif
434	c->curpm = PL_curpm;
435	c->curcop = PL_curcop;
436	}	384	}
437		385
438	/*	386	/*
439	* allocate various perl stacks. This is an exact copy	387	* allocate various perl stacks. This is an exact copy
440	* of perl.c:init_stacks, except that it uses less memory	388	* of perl.c:init_stacks, except that it uses less memory
441	* on the (sometimes correct) assumption that coroutines do	389	* on the (sometimes correct) assumption that coroutines do
442	* not usually need a lot of stackspace.	390	* not usually need a lot of stackspace.
443	*/	391	*/
444	static void	392	static void
445	coro_init_stacks (pTHX)	393	coro_init_stacks ()
446	{	394	{
447	LOCK;
448
449	PL_curstackinfo = new_stackinfo(96, 1024/sizeof(PERL_CONTEXT) - 1);	395	PL_curstackinfo = new_stackinfo(128, 1024/sizeof(PERL_CONTEXT));
450	PL_curstackinfo->si_type = PERLSI_MAIN;	396	PL_curstackinfo->si_type = PERLSI_MAIN;
451	PL_curstack = PL_curstackinfo->si_stack;	397	PL_curstack = PL_curstackinfo->si_stack;
452	PL_mainstack = PL_curstack; /* remember in case we switch stacks */	398	PL_mainstack = PL_curstack; /* remember in case we switch stacks */
453		399
454	PL_stack_base = AvARRAY(PL_curstack);	400	PL_stack_base = AvARRAY(PL_curstack);
455	PL_stack_sp = PL_stack_base;	401	PL_stack_sp = PL_stack_base;
456	PL_stack_max = PL_stack_base + AvMAX(PL_curstack);	402	PL_stack_max = PL_stack_base + AvMAX(PL_curstack);
457		403
458	New(50,PL_tmps_stack,96,SV*);	404	New(50,PL_tmps_stack,128,SV*);
459	PL_tmps_floor = -1;	405	PL_tmps_floor = -1;
460	PL_tmps_ix = -1;	406	PL_tmps_ix = -1;
461	PL_tmps_max = 96;	407	PL_tmps_max = 128;
462		408
463	New(54,PL_markstack,16,I32);	409	New(54,PL_markstack,32,I32);
464	PL_markstack_ptr = PL_markstack;	410	PL_markstack_ptr = PL_markstack;
465	PL_markstack_max = PL_markstack + 16;	411	PL_markstack_max = PL_markstack + 32;
466		412
467	#ifdef SET_MARK_OFFSET	413	#ifdef SET_MARK_OFFSET
468	SET_MARK_OFFSET;	414	SET_MARK_OFFSET;
469	#endif	415	#endif
470		416
471	New(54,PL_scopestack,16,I32);	417	New(54,PL_scopestack,32,I32);
472	PL_scopestack_ix = 0;	418	PL_scopestack_ix = 0;
473	PL_scopestack_max = 16;	419	PL_scopestack_max = 32;
474		420
475	New(54,PL_savestack,96,ANY);	421	New(54,PL_savestack,64,ANY);
476	PL_savestack_ix = 0;	422	PL_savestack_ix = 0;
477	PL_savestack_max = 96;	423	PL_savestack_max = 64;
478		424
479	#if PERL_VERSION < 9	425	#if !PERL_VERSION_ATLEAST (5,9,0)
480	New(54,PL_retstack,8,OP*);	426	New(54,PL_retstack,16,OP*);
481	PL_retstack_ix = 0;	427	PL_retstack_ix = 0;
482	PL_retstack_max = 8;	428	PL_retstack_max = 16;
483	#endif	429	#endif
484
485	UNLOCK;
486	}	430	}
487		431
488	/*	432	/*
489	* destroy the stacks, the callchain etc...	433	* destroy the stacks, the callchain etc...
490	*/	434	*/
491	static void	435	static void
492	destroy_stacks(pTHX)	436	coro_destroy_stacks ()
493	{	437	{
494	if (!IN_DESTRUCT)	438	if (!IN_DESTRUCT)
495	{	439	{
496	/* is this ugly, I ask? */	440	/* is this ugly, I ask? */
497	LEAVE_SCOPE (0);	441	LEAVE_SCOPE (0);
…		…
528		472
529	Safefree (PL_tmps_stack);	473	Safefree (PL_tmps_stack);
530	Safefree (PL_markstack);	474	Safefree (PL_markstack);
531	Safefree (PL_scopestack);	475	Safefree (PL_scopestack);
532	Safefree (PL_savestack);	476	Safefree (PL_savestack);
533	#if PERL_VERSION < 9	477	#if !PERL_VERSION_ATLEAST (5,9,0)
534	Safefree (PL_retstack);	478	Safefree (PL_retstack);
535	#endif	479	#endif
536	}	480	}
537		481
538	static void	482	static void
539	setup_coro (struct coro *coro)	483	setup_coro (struct coro *coro)
540	{	484	{
541	/*	485	/*
542	* emulate part of the perl startup here.	486	* emulate part of the perl startup here.
543	*/	487	*/
544	dTHX;
545	dSP;
546	UNOP myop;
547	SV sub_init = (SV )get_cv ("Coro::State::coro_init", FALSE);
548		488
549	coro_init_stacks (aTHX);	489	coro_init_stacks ();
550	/PL_curcop = 0;/	490
551	/PL_in_eval = PL_in_eval;/ /* inherit */	491	PL_curcop = &PL_compiling;
		492	PL_in_eval = EVAL_NULL;
		493	PL_curpm = 0;
		494	PL_localizing = 0;
		495	PL_dirty = 0;
		496	PL_restartop = 0;
		497
		498	{
		499	dSP;
		500	LOGOP myop;
		501
		502	/* I have no idea why this is needed, but it is */
		503	PUSHMARK (SP);
		504
552	SvREFCNT_dec (GvAV (PL_defgv));	505	SvREFCNT_dec (GvAV (PL_defgv));
553	GvAV (PL_defgv) = coro->args; coro->args = 0;	506	GvAV (PL_defgv) = coro->args; coro->args = 0;
554		507
555	SPAGAIN;
556
557	Zero (&myop, 1, UNOP);	508	Zero (&myop, 1, LOGOP);
558	myop.op_next = Nullop;	509	myop.op_next = Nullop;
559	myop.op_flags = OPf_WANT_VOID;	510	myop.op_flags = OPf_WANT_VOID;
560		511
561	PL_op = (OP *)&myop;	512	PL_op = (OP *)&myop;
562		513
563	PUSHMARK(SP);	514	PUSHMARK (SP);
564	XPUSHs (sub_init);	515	XPUSHs ((SV *)get_cv ("Coro::State::_coro_init", FALSE));
565	PUTBACK;	516	PUTBACK;
566	PL_op = PL_ppaddr[OP_ENTERSUB](aTHX);	517	PL_op = PL_ppaddr[OP_ENTERSUB](aTHX);
567	SPAGAIN;	518	SPAGAIN;
		519	}
568		520
569	ENTER; /* necessary e.g. for dounwind */	521	ENTER; /* necessary e.g. for dounwind */
570	}	522	}
571		523
572	static void	524	static void
…		…
577	SvREFCNT_dec (coro_mortal);	529	SvREFCNT_dec (coro_mortal);
578	coro_mortal = 0;	530	coro_mortal = 0;
579	}	531	}
580	}	532	}
581		533
		534	static void NOINLINE
		535	prepare_cctx (coro_cctx *cctx)
		536	{
		537	dSP;
		538	LOGOP myop;
		539
		540	Zero (&myop, 1, LOGOP);
		541	myop.op_next = PL_op;
		542	myop.op_flags = OPf_WANT_VOID;
		543
		544	sv_setiv (get_sv ("Coro::State::_cctx", FALSE), PTR2IV (cctx));
		545
		546	PUSHMARK (SP);
		547	XPUSHs ((SV *)get_cv ("Coro::State::_cctx_init", FALSE));
		548	PUTBACK;
		549	PL_restartop = PL_ppaddr[OP_ENTERSUB](aTHX);
		550	SPAGAIN;
		551	}
		552
582	static void	553	static void
583	coro_run (void *arg)	554	coro_run (void *arg)
584	{	555	{
		556	/* coro_run is the alternative epilogue of transfer() */
		557	UNLOCK;
		558
585	/*	559	/*
586	* this is a _very_ stripped down perl interpreter ;)	560	* this is a _very_ stripped down perl interpreter ;)
587	*/	561	*/
588	dTHX;
589	PL_top_env = &PL_start_env;	562	PL_top_env = &PL_start_env;
590		563
591	UNLOCK;	564	/* inject call to cctx_init */
		565	prepare_cctx ((coro_cctx *)arg);
592		566
593	sv_setiv (get_sv ("Coro::State::cctx_stack", FALSE), PTR2IV ((coro_stack *)arg));
594	sv_setiv (get_sv ("Coro::State::cctx_restartop", FALSE), PTR2IV (PL_op));
595	PL_restartop = CvSTART (get_cv ("Coro::State::cctx_init", FALSE));
596
597	/* somebody will hit me for both perl_run and PL_restart_op */	567	/* somebody will hit me for both perl_run and PL_restartop */
598	perl_run (aTHX_ PERL_GET_CONTEXT);	568	perl_run (PL_curinterp);
599		569
		570	fputs ("FATAL: C coroutine fell over the edge of the world, aborting. Did you call exit in a coroutine?\n", stderr);
600	abort ();	571	abort ();
601	}	572	}
602		573
603	static coro_stack *	574	static coro_cctx *
604	stack_new ()	575	cctx_new ()
605	{	576	{
606	coro_stack *stack;	577	coro_cctx *cctx;
607		578
		579	++cctx_count;
		580
608	New (0, stack, 1, coro_stack);	581	New (0, cctx, 1, coro_cctx);
609		582
610	#if HAVE_MMAP	583	#if HAVE_MMAP
611		584
612	stack->ssize = ((STACKSIZE * sizeof (long) + PAGESIZE - 1) / PAGESIZE + STACKGUARD) * PAGESIZE; /* mmap should do allocate-on-write for us */	585	cctx->ssize = ((STACKSIZE * sizeof (long) + PAGESIZE - 1) / PAGESIZE + STACKGUARD) * PAGESIZE;
		586	/* mmap suppsedly does allocate-on-write for us */
613	stack->sptr = mmap (0, stack->ssize, PROT_EXEC\|PROT_READ\|PROT_WRITE, MAP_PRIVATE\|MAP_ANONYMOUS, 0, 0);	587	cctx->sptr = mmap (0, cctx->ssize, PROT_EXEC\|PROT_READ\|PROT_WRITE, MAP_PRIVATE\|MAP_ANONYMOUS, 0, 0);
614		588
615	if (stack->sptr == (void *)-1)	589	if (cctx->sptr == (void *)-1)
616	{	590	{
617	perror ("FATAL: unable to mmap stack for coroutine");	591	perror ("FATAL: unable to mmap stack for coroutine");
618	_exit (EXIT_FAILURE);	592	_exit (EXIT_FAILURE);
619	}	593	}
620		594
		595	# if STACKGUARD
621	mprotect (stack->sptr, STACKGUARD * PAGESIZE, PROT_NONE);	596	mprotect (cctx->sptr, STACKGUARD * PAGESIZE, PROT_NONE);
		597	# endif
622		598
623	#else	599	#else
624		600
625	stack->ssize = STACKSIZE * (long)sizeof (long);	601	cctx->ssize = STACKSIZE * (long)sizeof (long);
626	New (0, stack->sptr, STACKSIZE, long);	602	New (0, cctx->sptr, STACKSIZE, long);
627		603
628	if (!stack->sptr)	604	if (!cctx->sptr)
629	{	605	{
630	perror (stderr, "FATAL: unable to malloc stack for coroutine");	606	perror ("FATAL: unable to malloc stack for coroutine");
631	_exit (EXIT_FAILURE);	607	_exit (EXIT_FAILURE);
632	}	608	}
633		609
634	#endif	610	#endif
635		611
		612	#if USE_VALGRIND
		613	cctx->valgrind_id = VALGRIND_STACK_REGISTER (
		614	STACKGUARD * PAGESIZE + (char *)cctx->sptr,
		615	cctx->ssize + (char *)cctx->sptr
		616	);
		617	#endif
		618
636	coro_create (&stack->cctx, coro_run, (void *)stack, stack->sptr, stack->ssize);	619	coro_create (&cctx->cctx, coro_run, (void *)cctx, cctx->sptr, cctx->ssize);
637		620
638	return stack;	621	return cctx;
639	}	622	}
640		623
641	static void	624	static void
642	stack_free (coro_stack *stack)	625	cctx_destroy (coro_cctx *cctx)
643	{	626	{
644	if (!stack \|\| stack == main_stack)	627	if (!cctx)
645	return;	628	return;
646		629
		630	--cctx_count;
		631
		632	#if USE_VALGRIND
		633	VALGRIND_STACK_DEREGISTER (cctx->valgrind_id);
		634	#endif
		635
647	#if HAVE_MMAP	636	#if HAVE_MMAP
648	munmap (stack->sptr, stack->ssize);	637	munmap (cctx->sptr, cctx->ssize);
649	#else	638	#else
650	Safefree (stack->sptr);	639	Safefree (cctx->sptr);
651	#endif	640	#endif
652		641
653	Safefree (stack);	642	Safefree (cctx);
654	}	643	}
655		644
656	static coro_stack *stack_first;
657
658	static coro_stack *	645	static coro_cctx *
659	stack_get ()	646	cctx_get ()
660	{	647	{
661	coro_stack *stack;	648	coro_cctx *cctx;
662		649
663	if (stack_first)	650	if (cctx_first)
664	{	651	{
665	stack = stack_first;	652	cctx = cctx_first;
666	stack_first = stack->next;	653	cctx_first = cctx->next;
		654	--cctx_idle;
667	}	655	}
668	else	656	else
669	{	657	{
670	stack = stack_new ();	658	cctx = cctx_new ();
671	PL_op = PL_op->op_next;	659	PL_op = PL_op->op_next;
672	}	660	}
673		661
674	return stack;	662	return cctx;
675	}	663	}
676		664
677	static void	665	static void
678	stack_put (coro_stack *stack)	666	cctx_put (coro_cctx *cctx)
679	{	667	{
680	stack->next = stack_first;	668	/* free another cctx if overlimit */
681	stack_first = stack;	669	if (cctx_idle >= MAX_IDLE_CCTX)
		670	{
		671	coro_cctx *first = cctx_first;
		672	cctx_first = first->next;
		673	--cctx_idle;
		674
		675	assert (!first->inuse);
		676	cctx_destroy (first);
		677	}
		678
		679	++cctx_idle;
		680	cctx->next = cctx_first;
		681	cctx_first = cctx;
682	}	682	}
683		683
684	/* never call directly, always through the coro_state_transfer global variable */	684	/* never call directly, always through the coro_state_transfer global variable */
685	static void	685	static void NOINLINE
686	transfer_impl (pTHX_ struct coro prev, struct coro next, int flags)	686	transfer (struct coro prev, struct coro next, int flags)
687	{	687	{
688	dSTACKLEVEL;	688	dSTACKLEVEL;
689		689
690	/* sometimes transfer is only called to set idle_sp */	690	/* sometimes transfer is only called to set idle_sp */
691	if (flags == TRANSFER_SET_STACKLEVEL)	691	if (flags == TRANSFER_SET_STACKLEVEL)
692	((coro_stack *)prev)->idle_sp = STACKLEVEL;	692	((coro_cctx *)prev)->idle_sp = STACKLEVEL;
693	else if (prev != next)	693	else if (prev != next)
694	{	694	{
695	coro_stack *prev__stack;	695	coro_cctx *prev__cctx;
		696
		697	if (prev->flags & CF_NEW)
		698	{
		699	/* create a new empty context */
		700	Newz (0, prev->cctx, 1, coro_cctx);
		701	prev->cctx->inuse = 1;
		702	prev->flags &= ~CF_NEW;
		703	prev->flags \|= CF_RUNNING;
		704	}
		705
		706	/TODO: must not croak here /
		707	if (!prev->flags & CF_RUNNING)
		708	croak ("Coro::State::transfer called with non-running prev Coro::State, but can only transfer from running states");
		709
		710	if (next->flags & CF_RUNNING)
		711	croak ("Coro::State::transfer called with running next Coro::State, but can only transfer to inactive states");
		712
		713	prev->flags &= ~CF_RUNNING;
		714	next->flags \|= CF_RUNNING;
696		715
697	LOCK;	716	LOCK;
698		717
699	if (next->mainstack)	718	if (next->flags & CF_NEW)
		719	{
		720	/* need to start coroutine */
		721	next->flags &= ~CF_NEW;
		722	/* first get rid of the old state */
		723	SAVE (prev, -1);
		724	/* setup coroutine call */
		725	setup_coro (next);
		726	/* need a new stack */
		727	assert (!next->stack);
		728	}
		729	else
700	{	730	{
701	/* coroutine already started */	731	/* coroutine already started */
702	SAVE (prev, flags);	732	SAVE (prev, flags);
703	LOAD (next);	733	LOAD (next);
704	}	734	}
705	else	735
		736	prev__cctx = prev->cctx;
		737
		738	/* possibly "free" the cctx */
		739	if (prev__cctx->idle_sp == STACKLEVEL && 0)
706	{	740	{
707	/* need to start coroutine */	741	/* I assume that STACKLEVEL is a stronger indicator than PL_top_env changes */
708	/* first get rid of the old state */	742	assert (PL_top_env == prev__cctx->top_env);
709	SAVE (prev, -1);	743
710	/* setup coroutine call */	744	prev->cctx = 0;
711	setup_coro (next);	745
712	/* need a stack */	746	cctx_put (prev__cctx);
713	next->stack = 0;	747	prev__cctx->inuse = 0;
714	}	748	}
715		749
716	prev__stack = prev->stack;	750	if (!next->cctx)
717
718	/* possibly "free" the stack */
719	if (prev__stack->idle_sp == STACKLEVEL)
720	{	751	{
721	stack_put (prev__stack);	752	next->cctx = cctx_get ();
722	prev->stack = 0;	753	assert (!next->cctx->inuse);
		754	next->cctx->inuse = 1;
723	}	755	}
724		756
725	if (!next->stack)
726	next->stack = stack_get ();
727
728	if (prev__stack != next->stack)	757	if (prev__cctx != next->cctx)
729	{	758	{
730	prev__stack->top_env = PL_top_env;	759	prev__cctx->top_env = PL_top_env;
731	PL_top_env = next->stack->top_env;	760	PL_top_env = next->cctx->top_env;
732	coro_transfer (&prev__stack->cctx, &next->stack->cctx);	761	coro_transfer (&prev__cctx->cctx, &next->cctx->cctx);
733	}	762	}
734		763
735	free_coro_mortal ();	764	free_coro_mortal ();
736		765
737	UNLOCK;	766	UNLOCK;
738	}	767	}
739	}	768	}
740
741	/* use this function pointer to call the above function */
742	/* this is done to increase chances of the compiler not inlining the call */
743	/* not static to make it even harder for the compiler (and theoretically impossible in most cases */
744	void (coro_state_transfer)(pTHX_ struct coro prev, struct coro *next, int flags) = transfer_impl;
745		769
746	struct transfer_args	770	struct transfer_args
747	{	771	{
748	struct coro prev, next;	772	struct coro prev, next;
749	int flags;	773	int flags;
750	};	774	};
751		775
752	#define TRANSFER(ta) coro_state_transfer ((ta).prev, (ta).next, (ta).flags)	776	#define TRANSFER(ta) transfer ((ta).prev, (ta).next, (ta).flags)
753		777
754	static void	778	static void
755	coro_state_destroy (struct coro *coro)	779	coro_state_destroy (struct coro *coro)
756	{	780	{
757	if (coro->refcnt--)	781	if (coro->refcnt--)
…		…
759		783
760	if (coro->mainstack && coro->mainstack != main_mainstack)	784	if (coro->mainstack && coro->mainstack != main_mainstack)
761	{	785	{
762	struct coro temp;	786	struct coro temp;
763		787
		788	if (coro->flags & CF_RUNNING)
		789	croak ("FATAL: tried to destroy currently running coroutine");
		790
764	SAVE (aTHX_ (&temp), TRANSFER_SAVE_ALL);	791	SAVE ((&temp), TRANSFER_SAVE_ALL);
765	LOAD (aTHX_ coro);	792	LOAD (coro);
766		793
767	destroy_stacks (aTHX);	794	coro_destroy_stacks ();
768		795
769	LOAD ((&temp)); /* this will get rid of defsv etc.. */	796	LOAD ((&temp)); /* this will get rid of defsv etc.. */
770		797
771	coro->mainstack = 0;	798	coro->mainstack = 0;
772	}	799	}
773		800
774	stack_free (coro->stack);	801	cctx_destroy (coro->cctx);
775	SvREFCNT_dec (coro->args);	802	SvREFCNT_dec (coro->args);
776	Safefree (coro);	803	Safefree (coro);
777	}	804	}
778		805
779	static int	806	static int
780	coro_state_clear (SV sv, MAGIC mg)	807	coro_state_clear (pTHX_ SV sv, MAGIC mg)
781	{	808	{
782	struct coro coro = (struct coro )mg->mg_ptr;	809	struct coro coro = (struct coro )mg->mg_ptr;
783	mg->mg_ptr = 0;	810	mg->mg_ptr = 0;
784		811
785	coro_state_destroy (coro);	812	coro_state_destroy (coro);
786		813
787	return 0;	814	return 0;
788	}	815	}
789		816
790	static int	817	static int
791	coro_state_dup (MAGIC mg, CLONE_PARAMS params)	818	coro_state_dup (pTHX_ MAGIC mg, CLONE_PARAMS params)
792	{	819	{
793	struct coro coro = (struct coro )mg->mg_ptr;	820	struct coro coro = (struct coro )mg->mg_ptr;
794		821
795	++coro->refcnt;	822	++coro->refcnt;
796		823
797	return 0;	824	return 0;
798	}	825	}
799		826
800	static MGVTBL coro_state_vtbl = { 0, 0, 0, 0, coro_state_clear, 0, coro_state_dup, 0 };	827	static MGVTBL coro_state_vtbl = {
		828	0, 0, 0, 0,
		829	coro_state_clear,
		830	0,
		831	#ifdef MGf_DUP
		832	coro_state_dup,
		833	#else
		834	# define MGf_DUP 0
		835	#endif
		836	};
801		837
802	static struct coro *	838	static struct coro *
803	SvSTATE (SV *coro)	839	SvSTATE (SV *coro)
804	{	840	{
805	HV *stash;	841	HV *stash;
…		…
820	assert (mg->mg_type == PERL_MAGIC_ext);	856	assert (mg->mg_type == PERL_MAGIC_ext);
821	return (struct coro *)mg->mg_ptr;	857	return (struct coro *)mg->mg_ptr;
822	}	858	}
823		859
824	static void	860	static void
825	prepare_transfer (pTHX_ struct transfer_args ta, SV prev, SV *next, int flags)	861	prepare_transfer (struct transfer_args ta, SV prev, SV *next, int flags)
826	{	862	{
827	ta->prev = SvSTATE (prev);	863	ta->prev = SvSTATE (prev);
828	ta->next = SvSTATE (next);	864	ta->next = SvSTATE (next);
829	ta->flags = flags;	865	ta->flags = flags;
830	}	866	}
831		867
832	static void	868	static void
833	api_transfer (SV prev, SV next, int flags)	869	api_transfer (SV prev, SV next, int flags)
834	{	870	{
835	dTHX;
836	struct transfer_args ta;	871	struct transfer_args ta;
837		872
838	prepare_transfer (aTHX_ &ta, prev, next, flags);	873	prepare_transfer (&ta, prev, next, flags);
839	TRANSFER (ta);	874	TRANSFER (ta);
840	}	875	}
841		876
842	/ Coro ******************************************************************/	877	/ Coro ******************************************************************/
843		878
…		…
847	#define PRIO_LOW -1	882	#define PRIO_LOW -1
848	#define PRIO_IDLE -3	883	#define PRIO_IDLE -3
849	#define PRIO_MIN -4	884	#define PRIO_MIN -4
850		885
851	/* for Coro.pm */	886	/* for Coro.pm */
852	static GV coro_current, coro_idle;	887	static SV *coro_current;
853	static AV *coro_ready [PRIO_MAX-PRIO_MIN+1];	888	static AV *coro_ready [PRIO_MAX-PRIO_MIN+1];
854	static int coro_nready;	889	static int coro_nready;
855		890
856	static void	891	static void
857	coro_enq (pTHX_ SV *sv)	892	coro_enq (SV *coro_sv)
858	{	893	{
859	int prio;
860
861	if (SvTYPE (sv) != SVt_PVHV)
862	croak ("Coro::ready tried to enqueue something that is not a coroutine");
863
864	prio = SvSTATE (sv)->prio;
865
866	av_push (coro_ready [prio - PRIO_MIN], sv);	894	av_push (coro_ready [SvSTATE (coro_sv)->prio - PRIO_MIN], coro_sv);
867	coro_nready++;	895	coro_nready++;
868	}	896	}
869		897
870	static SV *	898	static SV *
871	coro_deq (pTHX_ int min_prio)	899	coro_deq (int min_prio)
872	{	900	{
873	int prio = PRIO_MAX - PRIO_MIN;	901	int prio = PRIO_MAX - PRIO_MIN;
874		902
875	min_prio -= PRIO_MIN;	903	min_prio -= PRIO_MIN;
876	if (min_prio < 0)	904	if (min_prio < 0)
…		…
884	}	912	}
885		913
886	return 0;	914	return 0;
887	}	915	}
888		916
889	static void	917	static int
890	api_ready (SV *coro)	918	api_ready (SV *coro_sv)
891	{	919	{
892	dTHX;	920	struct coro *coro;
893		921
894	if (SvROK (coro))	922	if (SvROK (coro_sv))
895	coro = SvRV (coro);	923	coro_sv = SvRV (coro_sv);
		924
		925	coro = SvSTATE (coro_sv);
		926
		927	if (coro->flags & CF_READY)
		928	return 0;
		929
		930	#if 0 /* this is actually harmless */
		931	if (coro->flags & CF_RUNNING)
		932	croak ("Coro::ready called on currently running coroutine");
		933	#endif
		934
		935	coro->flags \|= CF_READY;
896		936
897	LOCK;	937	LOCK;
898	coro_enq (aTHX_ SvREFCNT_inc (coro));	938	coro_enq (SvREFCNT_inc (coro_sv));
899	UNLOCK;	939	UNLOCK;
900	}
901		940
		941	return 1;
		942	}
		943
902	static void	944	static int
		945	api_is_ready (SV *coro_sv)
		946	{
		947	return !!SvSTATE (coro_sv)->flags & CF_READY;
		948	}
		949
		950	static void
903	prepare_schedule (aTHX_ struct transfer_args *ta)	951	prepare_schedule (struct transfer_args *ta)
904	{	952	{
905	SV current, prev, *next;	953	SV prev, next;
906
907	LOCK;
908
909	current = GvSV (coro_current);
910		954
911	for (;;)	955	for (;;)
912	{	956	{
913	LOCK;	957	LOCK;
914
915	next = coro_deq (aTHX_ PRIO_MIN);	958	next = coro_deq (PRIO_MIN);
		959	UNLOCK;
916		960
917	if (next)	961	if (next)
918	break;	962	break;
919		963
920	UNLOCK;
921
922	{	964	{
923	dSP;	965	dSP;
924		966
925	ENTER;	967	ENTER;
926	SAVETMPS;	968	SAVETMPS;
927		969
928	PUSHMARK (SP);	970	PUSHMARK (SP);
929	PUTBACK;	971	PUTBACK;
930	call_sv (GvSV (coro_idle), G_DISCARD);	972	call_sv (get_sv ("Coro::idle", FALSE), G_DISCARD);
931		973
932	FREETMPS;	974	FREETMPS;
933	LEAVE;	975	LEAVE;
934	}	976	}
935	}	977	}
936		978
937	prev = SvRV (current);	979	prev = SvRV (coro_current);
938	SvRV (current) = next;	980	SvRV_set (coro_current, next);
939		981
940	/* free this only after the transfer */	982	/* free this only after the transfer */
		983	LOCK;
941	free_coro_mortal ();	984	free_coro_mortal ();
		985	UNLOCK;
942	coro_mortal = prev;	986	coro_mortal = prev;
943		987
		988	assert (!SvROK(prev));//D
		989	assert (!SvROK(next));//D
		990
944	ta->prev = SvSTATE (prev);	991	ta->prev = SvSTATE (prev);
945	ta->next = SvSTATE (next);	992	ta->next = SvSTATE (next);
946	ta->flags = TRANSFER_SAVE_ALL;	993	ta->flags = TRANSFER_SAVE_ALL;
947		994
948	UNLOCK;	995	assert (ta->flags & CF_READY);
		996	ta->next->flags &= ~CF_READY;
949	}	997	}
950		998
951	static void	999	static void
952	prepare_cede (aTHX_ struct transfer_args *ta)	1000	prepare_cede (struct transfer_args *ta)
953	{	1001	{
954	LOCK;	1002	api_ready (coro_current);
955	coro_enq (aTHX_ SvREFCNT_inc (SvRV (GvSV (coro_current))));
956	UNLOCK;
957		1003
958	prepare_schedule (ta);	1004	prepare_schedule (ta);
959	}	1005	}
960		1006
961	static void	1007	static void
962	api_schedule (void)	1008	api_schedule (void)
963	{	1009	{
964	dTHX;
965	struct transfer_args ta;	1010	struct transfer_args ta;
966		1011
967	prepare_schedule (&ta);	1012	prepare_schedule (&ta);
968	TRANSFER (ta);	1013	TRANSFER (ta);
969	}	1014	}
970		1015
971	static void	1016	static void
972	api_cede (void)	1017	api_cede (void)
973	{	1018	{
974	dTHX;
975	struct transfer_args ta;	1019	struct transfer_args ta;
976		1020
977	prepare_cede (&ta);	1021	prepare_cede (&ta);
978	TRANSFER (ta);	1022	TRANSFER (ta);
979	}	1023	}
…		…
998	main_mainstack = PL_mainstack;	1042	main_mainstack = PL_mainstack;
999		1043
1000	coroapi.ver = CORO_API_VERSION;	1044	coroapi.ver = CORO_API_VERSION;
1001	coroapi.transfer = api_transfer;	1045	coroapi.transfer = api_transfer;
1002		1046
1003	Newz (0, main_stack, 1, coro_stack);
1004	main_stack->idle_sp = (void *)-1;
1005
1006	assert (("PRIO_NORMAL must be 0", !PRIO_NORMAL));	1047	assert (("PRIO_NORMAL must be 0", !PRIO_NORMAL));
1007	}	1048	}
1008		1049
1009	SV *	1050	SV *
1010	new (char *klass, ...)	1051	new (char *klass, ...)
…		…
1014	HV *hv;	1055	HV *hv;
1015	int i;	1056	int i;
1016		1057
1017	Newz (0, coro, 1, struct coro);	1058	Newz (0, coro, 1, struct coro);
1018	coro->args = newAV ();	1059	coro->args = newAV ();
		1060	coro->flags = CF_NEW;
1019		1061
1020	hv = newHV ();	1062	hv = newHV ();
1021	sv_magicext ((SV )hv, 0, PERL_MAGIC_ext, &coro_state_vtbl, (char )coro, 0)->mg_flags \|= MGf_DUP;	1063	sv_magicext ((SV )hv, 0, PERL_MAGIC_ext, &coro_state_vtbl, (char )coro, 0)->mg_flags \|= MGf_DUP;
1022	RETVAL = sv_bless (newRV_noinc ((SV *)hv), gv_stashpv (klass, 1));	1064	RETVAL = sv_bless (newRV_noinc ((SV *)hv), gv_stashpv (klass, 1));
1023		1065
1024	for (i = 1; i < items; i++)	1066	for (i = 1; i < items; i++)
1025	av_push (coro->args, newSVsv (ST (i)));	1067	av_push (coro->args, newSVsv (ST (i)));
1026
1027	coro->stack = main_stack;
1028	/coro->mainstack = 0; //actual work is done inside transfer /
1029	/coro->stack = 0;/
1030	}	1068	}
1031	OUTPUT:	1069	OUTPUT:
1032	RETVAL	1070	RETVAL
1033		1071
1034	void	1072	void
1035	transfer (...)	1073	_set_stacklevel (...)
1036	ALIAS:	1074	ALIAS:
1037	Coro::schedule = 1	1075	Coro::State::transfer = 1
1038	Coro::cede = 2	1076	Coro::schedule = 2
1039	_set_stacklevel = 3	1077	Coro::cede = 3
1040	CODE:	1078	CODE:
1041	{	1079	{
1042	struct transfer_args ta;	1080	struct transfer_args ta;
1043		1081
1044	switch (ix)	1082	switch (ix)
1045	{	1083	{
1046	case 0:	1084	case 0:
1047	if (items != 3)
1048	croak ("Coro::State::transfer(prev,next,flags) expects three arguments, not %d", items);
1049
1050	prepare_transfer (&ta, ST (0), ST (1), SvIV (ST (2)));
1051	break;
1052
1053	case 1:
1054	prepare_schedule (&ta);
1055	break;
1056
1057	case 2:
1058	prepare_cede (&ta);
1059	break;
1060
1061	case 3:
1062	ta.prev = (struct coro )INT2PTR (coro_stack , SvIV (ST (0)));	1085	ta.prev = (struct coro )INT2PTR (coro_cctx , SvIV (ST (0)));
1063	ta.next = 0;	1086	ta.next = 0;
1064	ta.flags = TRANSFER_SET_STACKLEVEL;	1087	ta.flags = TRANSFER_SET_STACKLEVEL;
1065	break;	1088	break;
		1089
		1090	case 1:
		1091	if (items != 3)
		1092	croak ("Coro::State::transfer (prev,next,flags) expects three arguments, not %d", items);
		1093
		1094	prepare_transfer (&ta, ST (0), ST (1), SvIV (ST (2)));
		1095	break;
		1096
		1097	case 2:
		1098	prepare_schedule (&ta);
		1099	break;
		1100
		1101	case 3:
		1102	prepare_cede (&ta);
		1103	break;
1066	}	1104	}
1067		1105
1068	TRANSFER (ta);	1106	TRANSFER (ta);
1069	}	1107	}
1070		1108
…		…
1077	sv_unmagic (SvRV (dst), PERL_MAGIC_ext);	1115	sv_unmagic (SvRV (dst), PERL_MAGIC_ext);
1078		1116
1079	++coro_src->refcnt;	1117	++coro_src->refcnt;
1080	sv_magicext (SvRV (dst), 0, PERL_MAGIC_ext, &coro_state_vtbl, (char *)coro_src, 0)->mg_flags \|= MGf_DUP;	1118	sv_magicext (SvRV (dst), 0, PERL_MAGIC_ext, &coro_state_vtbl, (char *)coro_src, 0)->mg_flags \|= MGf_DUP;
1081	}	1119	}
1082
1083	void
1084	_nonlocal_goto (IV nextop)
1085	CODE:
1086	/* uuh, somebody will kill me again for this */
1087	PL_op->op_next = INT2PTR (OP *, nextop);
1088		1120
1089	void	1121	void
1090	_exit (code)	1122	_exit (code)
1091	int code	1123	int code
1092	PROTOTYPE: $	1124	PROTOTYPE: $
1093	CODE:	1125	CODE:
1094	_exit (code);	1126	_exit (code);
1095		1127
1096	MODULE = Coro::State PACKAGE = Coro::Cont	1128	int
		1129	cctx_count ()
		1130	CODE:
		1131	RETVAL = cctx_count;
		1132	OUTPUT:
		1133	RETVAL
1097		1134
1098	void	1135	int
1099	yield (...)	1136	cctx_idle ()
1100	PROTOTYPE: @	1137	CODE:
1101	CODE:	1138	RETVAL = cctx_idle;
1102	{	1139	OUTPUT:
1103	SV *yieldstack;	1140	RETVAL
1104	SV *sv;
1105	AV *defav = GvAV (PL_defgv);
1106	struct coro prev, next;
1107
1108	yieldstack = *hv_fetch (
1109	(HV *)SvRV (GvSV (coro_current)),
1110	"yieldstack", sizeof ("yieldstack") - 1,
1111	0
1112	);
1113
1114	/* set up @_ -- ugly */
1115	av_clear (defav);
1116	av_fill (defav, items - 1);
1117	while (items--)
1118	av_store (defav, items, SvREFCNT_inc (ST(items)));
1119
1120	sv = av_pop ((AV *)SvRV (yieldstack));
1121	prev = SvSTATE (av_fetch ((AV )SvRV (sv), 0, 0));
1122	next = SvSTATE (av_fetch ((AV )SvRV (sv), 1, 0));
1123	SvREFCNT_dec (sv);
1124
1125	coro_state_transfer (aTHX_ prev, next, 0);
1126	}
1127		1141
1128	MODULE = Coro::State PACKAGE = Coro	1142	MODULE = Coro::State PACKAGE = Coro
1129		1143
1130	BOOT:	1144	BOOT:
1131	{	1145	{
…		…
1138	newCONSTSUB (coro_stash, "PRIO_NORMAL", newSViv (PRIO_NORMAL));	1152	newCONSTSUB (coro_stash, "PRIO_NORMAL", newSViv (PRIO_NORMAL));
1139	newCONSTSUB (coro_stash, "PRIO_LOW", newSViv (PRIO_LOW));	1153	newCONSTSUB (coro_stash, "PRIO_LOW", newSViv (PRIO_LOW));
1140	newCONSTSUB (coro_stash, "PRIO_IDLE", newSViv (PRIO_IDLE));	1154	newCONSTSUB (coro_stash, "PRIO_IDLE", newSViv (PRIO_IDLE));
1141	newCONSTSUB (coro_stash, "PRIO_MIN", newSViv (PRIO_MIN));	1155	newCONSTSUB (coro_stash, "PRIO_MIN", newSViv (PRIO_MIN));
1142		1156
1143	coro_current = gv_fetchpv ("Coro::current", TRUE, SVt_PV);	1157	coro_current = get_sv ("Coro::current", FALSE);
1144	coro_idle = gv_fetchpv ("Coro::idle" , TRUE, SVt_PV);	1158	SvREADONLY_on (coro_current);
1145		1159
1146	for (i = PRIO_MAX - PRIO_MIN + 1; i--; )	1160	for (i = PRIO_MAX - PRIO_MIN + 1; i--; )
1147	coro_ready[i] = newAV ();	1161	coro_ready[i] = newAV ();
1148		1162
1149	{	1163	{
1150	SV *sv = perl_get_sv("Coro::API", 1);	1164	SV *sv = perl_get_sv("Coro::API", 1);
1151		1165
1152	coroapi.schedule = api_schedule;	1166	coroapi.schedule = api_schedule;
1153	coroapi.cede = api_cede;	1167	coroapi.cede = api_cede;
1154	coroapi.ready = api_ready;	1168	coroapi.ready = api_ready;
		1169	coroapi.is_ready = api_is_ready;
1155	coroapi.nready = &coro_nready;	1170	coroapi.nready = &coro_nready;
1156	coroapi.current = coro_current;	1171	coroapi.current = coro_current;
1157		1172
1158	GCoroAPI = &coroapi;	1173	GCoroAPI = &coroapi;
1159	sv_setiv (sv, (IV)&coroapi);	1174	sv_setiv (sv, (IV)&coroapi);
…		…
1179		1194
1180	coro->prio = newprio;	1195	coro->prio = newprio;
1181	}	1196	}
1182	}	1197	}
1183		1198
1184	void	1199	SV *
1185	ready (SV *self)	1200	ready (SV *self)
1186	PROTOTYPE: $	1201	PROTOTYPE: $
1187	CODE:	1202	CODE:
1188	api_ready (self);	1203	RETVAL = boolSV (api_ready (self));
		1204	OUTPUT:
		1205	RETVAL
		1206
		1207	SV *
		1208	is_ready (SV *self)
		1209	PROTOTYPE: $
		1210	CODE:
		1211	RETVAL = boolSV (api_is_ready (self));
		1212	OUTPUT:
		1213	RETVAL
1189		1214
1190	int	1215	int
1191	nready (...)	1216	nready (...)
1192	PROTOTYPE:	1217	PROTOTYPE:
1193	CODE:	1218	CODE:
1194	RETVAL = coro_nready;	1219	RETVAL = coro_nready;
1195	OUTPUT:	1220	OUTPUT:
1196	RETVAL	1221	RETVAL
1197		1222
		1223	void
		1224	_set_current (SV *current)
		1225	PROTOTYPE: $
		1226	CODE:
		1227	SvREFCNT_dec (SvRV (coro_current));
		1228	SvRV_set (coro_current, SvREFCNT_inc (SvRV (current)));
		1229
1198	MODULE = Coro::State PACKAGE = Coro::AIO	1230	MODULE = Coro::State PACKAGE = Coro::AIO
1199		1231
1200	SV *	1232	SV *
1201	_get_state ()	1233	_get_state ()
1202	CODE:	1234	CODE:

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Comparing Coro/Coro/State.xs (file contents): Revision 1.92 by root, Sun Nov 26 02:16:19 2006 UTC vs. Revision 1.118 by root, Fri Dec 1 19:58:53 2006 UTC

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Comparing Coro/Coro/State.xs (file contents):
Revision 1.92 by root, Sun Nov 26 02:16:19 2006 UTC vs.
Revision 1.118 by root, Fri Dec 1 19:58:53 2006 UTC