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

Comparing Coro/Coro/State.xs (file contents):
Revision 1.90 by root, Sat Nov 25 00:56:35 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
27	# ifndef IS_PADCONST	38	# ifndef IS_PADCONST
28	# define IS_PADCONST(v) 0	39	# define IS_PADCONST(v) 0
29	# endif	40	# endif
30	#endif	41	#endif
31		42
		43	#include <stdio.h>
32	#include <errno.h>	44	#include <errno.h>
33		45
34	#if !__i386 && !__x86_64 && !__powerpc && !__m68k && !__alpha && !__mips && !__sparc64	46	#if !__i386 && !__x86_64 && !__powerpc && !__m68k && !__alpha && !__mips && !__sparc64
35	# undef STACKGUARD	47	# undef STACKGUARD
36	#endif	48	#endif
…		…
53	# ifndef PAGESIZE	65	# ifndef PAGESIZE
54	# define PAGESIZE pagesize	66	# define PAGESIZE pagesize
55	# define BOOT_PAGESIZE pagesize = sysconf (_SC_PAGESIZE)	67	# define BOOT_PAGESIZE pagesize = sysconf (_SC_PAGESIZE)
56	static long pagesize;	68	static long pagesize;
57	# else	69	# else
58	# define BOOT_PAGESIZE	70	# define BOOT_PAGESIZE (void)0
59	# endif	71	# endif
		72	#else
		73	# define PAGESIZE 0
		74	# define BOOT_PAGESIZE (void)0
60	#endif	75	#endif
61
62	#define SUB_INIT "Coro::State::initialize"
63		76
64	/* 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
65	* 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
66	* and should be unique. */	79	* and should be unique. */
		80	#define dSTACKLEVEL int stacklevel
67	#define dSTACKLEVEL void *stacklevel = &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"
		94
		95	#define TRANSFER_SET_STACKLEVEL 0x8bfbfbfb /* magic cookie */
74		96
75	#ifdef USE_ITHREADS	97	#ifdef USE_ITHREADS
76	static perl_mutex coro_mutex;	98	static perl_mutex coro_mutex;
77	# define LOCK do { MUTEX_LOCK (&coro_mutex); } while (0)	99	# define LOCK do { MUTEX_LOCK (&coro_mutex); } while (0)
78	# define UNLOCK do { MUTEX_UNLOCK (&coro_mutex); } while (0)	100	# define UNLOCK do { MUTEX_UNLOCK (&coro_mutex); } while (0)
…		…
84	static struct CoroAPI coroapi;	106	static struct CoroAPI coroapi;
85	static AV main_mainstack; / used to differentiate between $main and others */	107	static AV main_mainstack; / used to differentiate between $main and others */
86	static HV coro_state_stash, coro_stash;	108	static HV coro_state_stash, coro_stash;
87	static SV coro_mortal; / will be freed after next transfer */	109	static SV coro_mortal; / will be freed after next transfer */
88		110
89	/* this is actually not just the c stack but also c registers etc... */	111	static struct coro_cctx *cctx_first;
		112	static int cctx_count, cctx_idle;
		113
		114	/* this is a structure representing a c-level coroutine */
90	typedef struct coro_stack {	115	typedef struct coro_cctx {
91	struct coro_stack *next;	116	struct coro_cctx *next;
92		117
93	void *idle_sp;	118	/* the stack */
94	void *sptr;	119	void *sptr;
95	long ssize; /* positive == mmap, otherwise malloc */	120	long ssize; /* positive == mmap, otherwise malloc */
96		121
97	/* cpu state */	122	/* cpu state */
		123	void idle_sp; / sp of top-level transfer/schedule/cede call */
		124	JMPENV *top_env;
98	coro_context cctx;	125	coro_context cctx;
99	} coro_stack;
100		126
101	static coro_stack *main_stack;	127	int inuse;
102		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	};
		139
		140	/* this is a structure representing a perl-level coroutine */
103	struct coro {	141	struct coro {
		142	/* the c coroutine allocated to this perl coroutine, if any */
		143	coro_cctx *cctx;
		144
		145	/* data associated with this coroutine (initial args) */
		146	AV *args;
		147	int refcnt;
		148	int flags;
		149
104	/* optionally saved, might be zero */	150	/* optionally saved, might be zero */
105	AV *defav;	151	AV *defav;
106	SV *defsv;	152	SV *defsv;
107	SV *errsv;	153	SV *errsv;
108		154
109	/* saved global state not related to stacks */	155	#define VAR(name,type) type name;
110	U8 dowarn;	156	# include "state.h"
111	I32 in_eval;	157	#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		158
147	/* coro process data */	159	/* coro process data */
148	int prio;	160	int prio;
149
150	/* data associated with this coroutine (initial args) */
151	AV *args;
152	int refcnt;
153	};	161	};
154		162
155	typedef struct coro *Coro__State;	163	typedef struct coro *Coro__State;
156	typedef struct coro *Coro__State_or_hashref;	164	typedef struct coro *Coro__State_or_hashref;
157		165
158	static AV *	166	static AV *
159	coro_clone_padlist (pTHX_ CV *cv)	167	coro_clone_padlist (CV *cv)
160	{	168	{
161	AV *padlist = CvPADLIST (cv);	169	AV *padlist = CvPADLIST (cv);
162	AV newpadlist, newpad;	170	AV newpadlist, newpad;
163		171
164	newpadlist = newAV ();	172	newpadlist = newAV ();
165	AvREAL_off (newpadlist);	173	AvREAL_off (newpadlist);
166	#if PERL_VERSION < 9	174	#if PERL_VERSION_ATLEAST (5,9,0)
		175	Perl_pad_push (aTHX_ padlist, AvFILLp (padlist) + 1);
		176	#else
167	Perl_pad_push (aTHX_ padlist, AvFILLp (padlist) + 1, 1);	177	Perl_pad_push (aTHX_ padlist, AvFILLp (padlist) + 1, 1);
168	#else
169	Perl_pad_push (aTHX_ padlist, AvFILLp (padlist) + 1);
170	#endif	178	#endif
171	newpad = (AV *)AvARRAY (padlist)[AvFILLp (padlist)];	179	newpad = (AV *)AvARRAY (padlist)[AvFILLp (padlist)];
172	--AvFILLp (padlist);	180	--AvFILLp (padlist);
173		181
174	av_store (newpadlist, 0, SvREFCNT_inc (*av_fetch (padlist, 0, FALSE)));	182	av_store (newpadlist, 0, SvREFCNT_inc (*av_fetch (padlist, 0, FALSE)));
…		…
176		184
177	return newpadlist;	185	return newpadlist;
178	}	186	}
179		187
180	static void	188	static void
181	free_padlist (pTHX_ AV *padlist)	189	free_padlist (AV *padlist)
182	{	190	{
183	/* may be during global destruction */	191	/* may be during global destruction */
184	if (SvREFCNT (padlist))	192	if (SvREFCNT (padlist))
185	{	193	{
186	I32 i = AvFILLp (padlist);	194	I32 i = AvFILLp (padlist);
…		…
207	AV *padlist;	215	AV *padlist;
208	AV av = (AV )mg->mg_obj;	216	AV av = (AV )mg->mg_obj;
209		217
210	/* casting is fun. */	218	/* casting is fun. */
211	while (&PL_sv_undef != (SV )(padlist = (AV )av_pop (av)))	219	while (&PL_sv_undef != (SV )(padlist = (AV )av_pop (av)))
212	free_padlist (aTHX_ padlist);	220	free_padlist (padlist);
213		221
214	SvREFCNT_dec (av);	222	SvREFCNT_dec (av);
215		223
216	return 0;	224	return 0;
217	}	225	}
218		226
219	#define PERL_MAGIC_coro PERL_MAGIC_ext	227	#define PERL_MAGIC_coro PERL_MAGIC_ext
220		228
221	static MGVTBL vtbl_coro = {0, 0, 0, 0, coro_cv_free};	229	static MGVTBL vtbl_coro = {0, 0, 0, 0, coro_cv_free};
222		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
223	/* the next two functions merely cache the padlists */	238	/* the next two functions merely cache the padlists */
224	static void	239	static void
225	get_padlist (pTHX_ CV *cv)	240	get_padlist (CV *cv)
226	{	241	{
227	MAGIC mg = mg_find ((SV )cv, PERL_MAGIC_coro);	242	MAGIC *mg = CORO_MAGIC (cv);
		243	AV *av;
228		244
229	if (mg && AvFILLp ((AV *)mg->mg_obj) >= 0)	245	if (mg && AvFILLp ((av = (AV *)mg->mg_obj)) >= 0)
230	CvPADLIST (cv) = (AV )av_pop ((AV )mg->mg_obj);	246	CvPADLIST (cv) = (AV *)AvARRAY (av)[AvFILLp (av)--];
231	else	247	else
232	{	248	{
233	#if 0	249	#if 0
234	/* this should work - but it doesn't :( */	250	/* this is probably cleaner, but also slower? */
235	CV *cp = Perl_cv_clone (aTHX_ cv);	251	CV *cp = Perl_cv_clone (cv);
236	CvPADLIST (cv) = CvPADLIST (cp);	252	CvPADLIST (cv) = CvPADLIST (cp);
237	CvPADLIST (cp) = 0;	253	CvPADLIST (cp) = 0;
238	SvREFCNT_dec (cp);	254	SvREFCNT_dec (cp);
239	#else	255	#else
240	CvPADLIST (cv) = coro_clone_padlist (aTHX_ cv);	256	CvPADLIST (cv) = coro_clone_padlist (cv);
241	#endif	257	#endif
242	}	258	}
243	}	259	}
244		260
245	static void	261	static void
246	put_padlist (pTHX_ CV *cv)	262	put_padlist (CV *cv)
247	{	263	{
248	MAGIC mg = mg_find ((SV )cv, PERL_MAGIC_coro);	264	MAGIC *mg = CORO_MAGIC (cv);
		265	AV *av;
249		266
250	if (!mg)	267	if (!mg)
251	{	268	{
252	sv_magic ((SV *)cv, 0, PERL_MAGIC_coro, 0, 0);	269	sv_magic ((SV *)cv, 0, PERL_MAGIC_coro, 0, 0);
253	mg = mg_find ((SV *)cv, PERL_MAGIC_coro);	270	mg = mg_find ((SV *)cv, PERL_MAGIC_coro);
254	mg->mg_virtual = &vtbl_coro;	271	mg->mg_virtual = &vtbl_coro;
255	mg->mg_obj = (SV *)newAV ();	272	mg->mg_obj = (SV *)newAV ();
256	}	273	}
257		274
258	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);
259	}	281	}
260		282
261	#define SB do {	283	#define SB do {
262	#define SE } while (0)	284	#define SE } while (0)
263		285
264	#define LOAD(state) load_state(aTHX_ (state));	286	#define LOAD(state) load_state ((state))
265	#define SAVE(state,flags) save_state(aTHX_ (state),(flags));	287	#define SAVE(state,flags) save_state ((state),(flags))
266		288
267	#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
268		290
269	static void	291	static void
270	load_state(pTHX_ Coro__State c)	292	load_state (Coro__State c)
271	{	293	{
272	PL_dowarn = c->dowarn;	294	#define VAR(name,type) PL_ ## name = c->name;
273	PL_in_eval = c->in_eval;	295	# include "state.h"
274		296	#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		297
307	if (c->defav) REPLACE_SV (GvAV (PL_defgv), c->defav);	298	if (c->defav) REPLACE_SV (GvAV (PL_defgv), c->defav);
308	if (c->defsv) REPLACE_SV (DEFSV , c->defsv);	299	if (c->defsv) REPLACE_SV (DEFSV , c->defsv);
309	if (c->errsv) REPLACE_SV (ERRSV , c->errsv);	300	if (c->errsv) REPLACE_SV (ERRSV , c->errsv);
310		301
…		…
313	CV *cv;	304	CV *cv;
314		305
315	/* now do the ugly restore mess */	306	/* now do the ugly restore mess */
316	while ((cv = (CV *)POPs))	307	while ((cv = (CV *)POPs))
317	{	308	{
318	AV padlist = (AV )POPs;
319
320	if (padlist)
321	{
322	put_padlist (aTHX_ cv); /* mark this padlist as available */	309	put_padlist (cv); /* mark this padlist as available */
323	CvPADLIST(cv) = padlist;	310	CvDEPTH (cv) = PTR2IV (POPs);
324	}	311	CvPADLIST (cv) = (AV *)POPs;
325
326	++CvDEPTH(cv);
327	}	312	}
328		313
329	PUTBACK;	314	PUTBACK;
330	}	315	}
331	}	316	}
332		317
333	static void	318	static void
334	save_state(pTHX_ Coro__State c, int flags)	319	save_state (Coro__State c, int flags)
335	{	320	{
336	{	321	{
337	dSP;	322	dSP;
338	I32 cxix = cxstack_ix;	323	I32 cxix = cxstack_ix;
339	PERL_CONTEXT *ccstk = cxstack;	324	PERL_CONTEXT *ccstk = cxstack;
…		…
350	{	335	{
351	while (cxix >= 0)	336	while (cxix >= 0)
352	{	337	{
353	PERL_CONTEXT *cx = &ccstk[cxix--];	338	PERL_CONTEXT *cx = &ccstk[cxix--];
354		339
355	if (CxTYPE(cx) == CXt_SUB)	340	if (CxTYPE (cx) == CXt_SUB)
356	{	341	{
357	CV *cv = cx->blk_sub.cv;	342	CV *cv = cx->blk_sub.cv;
		343
358	if (CvDEPTH(cv))	344	if (CvDEPTH (cv))
359	{	345	{
360	EXTEND (SP, CvDEPTH(cv)*2);	346	EXTEND (SP, 3);
361		347
362	while (--CvDEPTH(cv))
363	{
364	/* this tells the restore code to increment CvDEPTH */
365	PUSHs (Nullsv);
366	PUSHs ((SV *)cv);
367	}
368
369	PUSHs ((SV *)CvPADLIST(cv));	348	PUSHs ((SV *)CvPADLIST (cv));
		349	PUSHs (INT2PTR (SV *, CvDEPTH (cv)));
370	PUSHs ((SV *)cv);	350	PUSHs ((SV *)cv);
371		351
		352	CvDEPTH (cv) = 0;
372	get_padlist (aTHX_ cv);	353	get_padlist (cv);
373	}	354	}
374	}	355	}
375	#ifdef CXt_FORMAT	356	#ifdef CXt_FORMAT
376	else if (CxTYPE(cx) == CXt_FORMAT)	357	else if (CxTYPE (cx) == CXt_FORMAT)
377	{	358	{
378	/* 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? */
379	/* my bold guess is as a simple, plain sub... */	360	/* my bold guess is as a simple, plain sub... */
380	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");
381	}	362	}
…		…
395		376
396	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;
397	c->defsv = flags & TRANSFER_SAVE_DEFSV ? SvREFCNT_inc (DEFSV) : 0;	378	c->defsv = flags & TRANSFER_SAVE_DEFSV ? SvREFCNT_inc (DEFSV) : 0;
398	c->errsv = flags & TRANSFER_SAVE_ERRSV ? SvREFCNT_inc (ERRSV) : 0;	379	c->errsv = flags & TRANSFER_SAVE_ERRSV ? SvREFCNT_inc (ERRSV) : 0;
399		380
400	c->dowarn = PL_dowarn;	381	#define VAR(name,type)c->name = PL_ ## name;
401	c->in_eval = PL_in_eval;	382	# include "state.h"
402		383	#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	}	384	}
435		385
436	/*	386	/*
437	* allocate various perl stacks. This is an exact copy	387	* allocate various perl stacks. This is an exact copy
438	* of perl.c:init_stacks, except that it uses less memory	388	* of perl.c:init_stacks, except that it uses less memory
439	* on the (sometimes correct) assumption that coroutines do	389	* on the (sometimes correct) assumption that coroutines do
440	* not usually need a lot of stackspace.	390	* not usually need a lot of stackspace.
441	*/	391	*/
442	static void	392	static void
443	coro_init_stacks (pTHX)	393	coro_init_stacks ()
444	{	394	{
445	LOCK;
446
447	PL_curstackinfo = new_stackinfo(96, 1024/sizeof(PERL_CONTEXT) - 1);	395	PL_curstackinfo = new_stackinfo(128, 1024/sizeof(PERL_CONTEXT));
448	PL_curstackinfo->si_type = PERLSI_MAIN;	396	PL_curstackinfo->si_type = PERLSI_MAIN;
449	PL_curstack = PL_curstackinfo->si_stack;	397	PL_curstack = PL_curstackinfo->si_stack;
450	PL_mainstack = PL_curstack; /* remember in case we switch stacks */	398	PL_mainstack = PL_curstack; /* remember in case we switch stacks */
451		399
452	PL_stack_base = AvARRAY(PL_curstack);	400	PL_stack_base = AvARRAY(PL_curstack);
453	PL_stack_sp = PL_stack_base;	401	PL_stack_sp = PL_stack_base;
454	PL_stack_max = PL_stack_base + AvMAX(PL_curstack);	402	PL_stack_max = PL_stack_base + AvMAX(PL_curstack);
455		403
456	New(50,PL_tmps_stack,96,SV*);	404	New(50,PL_tmps_stack,128,SV*);
457	PL_tmps_floor = -1;	405	PL_tmps_floor = -1;
458	PL_tmps_ix = -1;	406	PL_tmps_ix = -1;
459	PL_tmps_max = 96;	407	PL_tmps_max = 128;
460		408
461	New(54,PL_markstack,16,I32);	409	New(54,PL_markstack,32,I32);
462	PL_markstack_ptr = PL_markstack;	410	PL_markstack_ptr = PL_markstack;
463	PL_markstack_max = PL_markstack + 16;	411	PL_markstack_max = PL_markstack + 32;
464		412
465	#ifdef SET_MARK_OFFSET	413	#ifdef SET_MARK_OFFSET
466	SET_MARK_OFFSET;	414	SET_MARK_OFFSET;
467	#endif	415	#endif
468		416
469	New(54,PL_scopestack,16,I32);	417	New(54,PL_scopestack,32,I32);
470	PL_scopestack_ix = 0;	418	PL_scopestack_ix = 0;
471	PL_scopestack_max = 16;	419	PL_scopestack_max = 32;
472		420
473	New(54,PL_savestack,96,ANY);	421	New(54,PL_savestack,64,ANY);
474	PL_savestack_ix = 0;	422	PL_savestack_ix = 0;
475	PL_savestack_max = 96;	423	PL_savestack_max = 64;
476		424
477	#if PERL_VERSION < 9	425	#if !PERL_VERSION_ATLEAST (5,9,0)
478	New(54,PL_retstack,8,OP*);	426	New(54,PL_retstack,16,OP*);
479	PL_retstack_ix = 0;	427	PL_retstack_ix = 0;
480	PL_retstack_max = 8;	428	PL_retstack_max = 16;
481	#endif	429	#endif
482
483	UNLOCK;
484	}	430	}
485		431
486	/*	432	/*
487	* destroy the stacks, the callchain etc...	433	* destroy the stacks, the callchain etc...
488	*/	434	*/
489	static void	435	static void
490	destroy_stacks(pTHX)	436	coro_destroy_stacks ()
491	{	437	{
492	if (!IN_DESTRUCT)	438	if (!IN_DESTRUCT)
493	{	439	{
494	/* is this ugly, I ask? */	440	/* is this ugly, I ask? */
495	LEAVE_SCOPE (0);	441	LEAVE_SCOPE (0);
…		…
526		472
527	Safefree (PL_tmps_stack);	473	Safefree (PL_tmps_stack);
528	Safefree (PL_markstack);	474	Safefree (PL_markstack);
529	Safefree (PL_scopestack);	475	Safefree (PL_scopestack);
530	Safefree (PL_savestack);	476	Safefree (PL_savestack);
531	#if PERL_VERSION < 9	477	#if !PERL_VERSION_ATLEAST (5,9,0)
532	Safefree (PL_retstack);	478	Safefree (PL_retstack);
533	#endif	479	#endif
534	}	480	}
535		481
536	static void	482	static void
537	setup_coro (struct coro *coro)	483	setup_coro (struct coro *coro)
538	{	484	{
539	/*	485	/*
540	* emulate part of the perl startup here.	486	* emulate part of the perl startup here.
541	*/	487	*/
542	dTHX;
543	dSP;
544	UNOP myop;
545	SV sub_init = (SV )get_cv (SUB_INIT, FALSE);
546		488
547	coro_init_stacks (aTHX);	489	coro_init_stacks ();
548	/PL_curcop = 0;/	490
549	/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
550	SvREFCNT_dec (GvAV (PL_defgv));	505	SvREFCNT_dec (GvAV (PL_defgv));
551	GvAV (PL_defgv) = coro->args; coro->args = 0;	506	GvAV (PL_defgv) = coro->args; coro->args = 0;
552		507
553	SPAGAIN;
554
555	Zero (&myop, 1, UNOP);	508	Zero (&myop, 1, LOGOP);
556	myop.op_next = Nullop;	509	myop.op_next = Nullop;
557	myop.op_flags = OPf_WANT_VOID;	510	myop.op_flags = OPf_WANT_VOID;
558		511
559	PL_op = (OP *)&myop;	512	PL_op = (OP *)&myop;
560		513
561	PUSHMARK(SP);	514	PUSHMARK (SP);
562	XPUSHs (sub_init);	515	XPUSHs ((SV *)get_cv ("Coro::State::_coro_init", FALSE));
563	PUTBACK;	516	PUTBACK;
564	PL_op = PL_ppaddr[OP_ENTERSUB](aTHX);	517	PL_op = PL_ppaddr[OP_ENTERSUB](aTHX);
565	SPAGAIN;	518	SPAGAIN;
		519	}
566		520
567	ENTER; /* necessary e.g. for dounwind */	521	ENTER; /* necessary e.g. for dounwind */
568	}	522	}
569		523
570	static void	524	static void
571	transfer_tail ()	525	free_coro_mortal ()
572	{	526	{
573	if (coro_mortal)	527	if (coro_mortal)
574	{	528	{
575	SvREFCNT_dec (coro_mortal);	529	SvREFCNT_dec (coro_mortal);
576	coro_mortal = 0;	530	coro_mortal = 0;
577	}	531	}
		532	}
578		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
		553	static void
		554	coro_run (void *arg)
		555	{
		556	/* coro_run is the alternative epilogue of transfer() */
579	UNLOCK;	557	UNLOCK;
580	}
581		558
582	static void
583	coro_run (void *arg)
584	{
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
590	transfer_tail ();
591
592	PL_top_env = &PL_start_env;	562	PL_top_env = &PL_start_env;
593	PL_restartop = PL_op->op_next;	563
		564	/* inject call to cctx_init */
		565	prepare_cctx ((coro_cctx *)arg);
		566
594	/* somebody will hit me for both perl_run and PL_restart_top */	567	/* somebody will hit me for both perl_run and PL_restartop */
595	perl_run (aTHX_ PERL_GET_CONTEXT);	568	perl_run (PL_curinterp);
596		569
		570	fputs ("FATAL: C coroutine fell over the edge of the world, aborting. Did you call exit in a coroutine?\n", stderr);
597	abort ();	571	abort ();
598	}	572	}
599		573
600	static coro_stack *	574	static coro_cctx *
601	stack_new ()	575	cctx_new ()
602	{	576	{
603	coro_stack *stack;	577	coro_cctx *cctx;
604		578
		579	++cctx_count;
		580
605	New (0, stack, 1, coro_stack);	581	New (0, cctx, 1, coro_cctx);
606		582
607	#if HAVE_MMAP	583	#if HAVE_MMAP
608		584
609	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 */
610	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);
611		588
612	if (stack->sptr == (void *)-1)	589	if (cctx->sptr == (void *)-1)
613	{	590	{
614	fprintf (stderr, "FATAL: unable to mmap stack for coroutine\n");	591	perror ("FATAL: unable to mmap stack for coroutine");
615	_exit (EXIT_FAILURE);	592	_exit (EXIT_FAILURE);
616	}	593	}
617		594
		595	# if STACKGUARD
618	mprotect (stack->sptr, STACKGUARD * PAGESIZE, PROT_NONE);	596	mprotect (cctx->sptr, STACKGUARD * PAGESIZE, PROT_NONE);
		597	# endif
619		598
620	#else	599	#else
621		600
622	stack->ssize = STACKSIZE * (long)sizeof (long);	601	cctx->ssize = STACKSIZE * (long)sizeof (long);
623	New (0, stack->sptr, STACKSIZE, long);	602	New (0, cctx->sptr, STACKSIZE, long);
624		603
625	if (!stack->sptr)	604	if (!cctx->sptr)
626	{	605	{
627	fprintf (stderr, "FATAL: unable to malloc stack for coroutine\n");	606	perror ("FATAL: unable to malloc stack for coroutine");
628	_exit (EXIT_FAILURE);	607	_exit (EXIT_FAILURE);
629	}	608	}
630		609
631	#endif	610	#endif
632		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
633	coro_create (&stack->cctx, coro_run, 0, stack->sptr, stack->ssize);	619	coro_create (&cctx->cctx, coro_run, (void *)cctx, cctx->sptr, cctx->ssize);
634		620
635	return stack;	621	return cctx;
636	}	622	}
637		623
638	static void	624	static void
639	stack_free (coro_stack *stack)	625	cctx_destroy (coro_cctx *cctx)
640	{	626	{
641	if (!stack \|\| stack == main_stack)	627	if (!cctx)
642	return;	628	return;
643		629
		630	--cctx_count;
		631
		632	#if USE_VALGRIND
		633	VALGRIND_STACK_DEREGISTER (cctx->valgrind_id);
		634	#endif
		635
644	#if HAVE_MMAP	636	#if HAVE_MMAP
645	munmap (stack->sptr, stack->ssize);	637	munmap (cctx->sptr, cctx->ssize);
646	#else	638	#else
647	Safefree (stack->sptr);	639	Safefree (cctx->sptr);
648	#endif	640	#endif
649		641
650	Safefree (stack);	642	Safefree (cctx);
651	}	643	}
652		644
653	static coro_stack *stack_first;	645	static coro_cctx *
654		646	cctx_get ()
655	static void
656	stack_get (struct coro *coro)
657	{	647	{
		648	coro_cctx *cctx;
		649
658	if (stack_first)	650	if (cctx_first)
659	{	651	{
660	coro->stack = stack_first;	652	cctx = cctx_first;
661	stack_first = stack_first->next;	653	cctx_first = cctx->next;
		654	--cctx_idle;
662	}	655	}
663	else	656	else
664	coro->stack = stack_new ();	657	{
665	}	658	cctx = cctx_new ();
		659	PL_op = PL_op->op_next;
		660	}
666		661
		662	return cctx;
		663	}
		664
667	static void	665	static void
668	stack_put (coro_stack *stack)	666	cctx_put (coro_cctx *cctx)
669	{	667	{
670	stack->next = stack_first;	668	/* free another cctx if overlimit */
671	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;
672	}	682	}
673		683
674	/* never call directly, always through the coro_state_transfer global variable */	684	/* never call directly, always through the coro_state_transfer global variable */
675	static void	685	static void NOINLINE
676	transfer_impl (pTHX_ struct coro prev, struct coro next, int flags)	686	transfer (struct coro prev, struct coro next, int flags)
677	{	687	{
678	dSTACKLEVEL;	688	dSTACKLEVEL;
679		689
680	/* sometimes transfer is only called to set idle_sp */	690	/* sometimes transfer is only called to set idle_sp */
681	if (!prev->stack->idle_sp)	691	if (flags == TRANSFER_SET_STACKLEVEL)
682	prev->stack->idle_sp = stacklevel;	692	((coro_cctx *)prev)->idle_sp = STACKLEVEL;
683
684	LOCK;
685
686	if (prev != next)	693	else if (prev != next)
687	{	694	{
688	coro_stack *prev_stack = prev->stack;	695	coro_cctx *prev__cctx;
689		696
690	/* possibly "free" the stack */	697	if (prev->flags & CF_NEW)
691	if (prev_stack->idle_sp == stacklevel)
692	{	698	{
693	stack_put (prev_stack);	699	/* create a new empty context */
694	prev->stack = 0;	700	Newz (0, prev->cctx, 1, coro_cctx);
		701	prev->cctx->inuse = 1;
		702	prev->flags &= ~CF_NEW;
		703	prev->flags \|= CF_RUNNING;
695	}	704	}
696		705
697	if (next->mainstack)	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;
		715
		716	LOCK;
		717
		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
698	{	730	{
699	/* coroutine already started */	731	/* coroutine already started */
700	SAVE (prev, flags);	732	SAVE (prev, flags);
701	LOAD (next);	733	LOAD (next);
702	}	734	}
703	else	735
		736	prev__cctx = prev->cctx;
		737
		738	/* possibly "free" the cctx */
		739	if (prev__cctx->idle_sp == STACKLEVEL && 0)
704	{	740	{
705	/* need to start coroutine */	741	/* I assume that STACKLEVEL is a stronger indicator than PL_top_env changes */
706	/* first get rid of the old state */	742	assert (PL_top_env == prev__cctx->top_env);
707	SAVE (prev, -1);	743
708	/* setup coroutine call */	744	prev->cctx = 0;
709	setup_coro (next);	745
710	/* need to change stack from main_stack to real one */	746	cctx_put (prev__cctx);
711	next->stack = 0;	747	prev__cctx->inuse = 0;
712	}	748	}
713		749
714	if (!next->stack)	750	if (!next->cctx)
715	stack_get (next);	751	{
		752	next->cctx = cctx_get ();
		753	assert (!next->cctx->inuse);
		754	next->cctx->inuse = 1;
		755	}
716		756
717	if (prev_stack != next->stack)	757	if (prev__cctx != next->cctx)
		758	{
		759	prev__cctx->top_env = PL_top_env;
		760	PL_top_env = next->cctx->top_env;
718	coro_transfer (&prev_stack->cctx, &next->stack->cctx);	761	coro_transfer (&prev__cctx->cctx, &next->cctx->cctx);
		762	}
		763
		764	free_coro_mortal ();
		765
		766	UNLOCK;
719	}	767	}
720
721	transfer_tail ();
722	}	768	}
723		769
724	/* use this function pointer to call the above function */	770	struct transfer_args
725	/* this is done to increase chances of the compiler not inlining the call */	771	{
726	void (coro_state_transfer)(pTHX_ struct coro prev, struct coro *next, int flags) = transfer_impl;	772	struct coro prev, next;
		773	int flags;
		774	};
		775
		776	#define TRANSFER(ta) transfer ((ta).prev, (ta).next, (ta).flags)
727		777
728	static void	778	static void
729	coro_state_destroy (struct coro *coro)	779	coro_state_destroy (struct coro *coro)
730	{	780	{
731	if (coro->refcnt--)	781	if (coro->refcnt--)
…		…
733		783
734	if (coro->mainstack && coro->mainstack != main_mainstack)	784	if (coro->mainstack && coro->mainstack != main_mainstack)
735	{	785	{
736	struct coro temp;	786	struct coro temp;
737		787
		788	if (coro->flags & CF_RUNNING)
		789	croak ("FATAL: tried to destroy currently running coroutine");
		790
738	SAVE (aTHX_ (&temp), TRANSFER_SAVE_ALL);	791	SAVE ((&temp), TRANSFER_SAVE_ALL);
739	LOAD (aTHX_ coro);	792	LOAD (coro);
740		793
741	destroy_stacks (aTHX);	794	coro_destroy_stacks ();
742		795
743	LOAD ((&temp)); /* this will get rid of defsv etc.. */	796	LOAD ((&temp)); /* this will get rid of defsv etc.. */
744		797
745	coro->mainstack = 0;	798	coro->mainstack = 0;
746	}	799	}
747		800
748	stack_free (coro->stack);	801	cctx_destroy (coro->cctx);
749	SvREFCNT_dec (coro->args);	802	SvREFCNT_dec (coro->args);
750	Safefree (coro);	803	Safefree (coro);
751	}	804	}
752		805
753	static int	806	static int
754	coro_state_clear (SV sv, MAGIC mg)	807	coro_state_clear (pTHX_ SV sv, MAGIC mg)
755	{	808	{
756	struct coro coro = (struct coro )mg->mg_ptr;	809	struct coro coro = (struct coro )mg->mg_ptr;
757	mg->mg_ptr = 0;	810	mg->mg_ptr = 0;
758		811
759	coro_state_destroy (coro);	812	coro_state_destroy (coro);
760		813
761	return 0;	814	return 0;
762	}	815	}
763		816
764	static int	817	static int
765	coro_state_dup (MAGIC mg, CLONE_PARAMS params)	818	coro_state_dup (pTHX_ MAGIC mg, CLONE_PARAMS params)
766	{	819	{
767	struct coro coro = (struct coro )mg->mg_ptr;	820	struct coro coro = (struct coro )mg->mg_ptr;
768		821
769	++coro->refcnt;	822	++coro->refcnt;
770		823
771	return 0;	824	return 0;
772	}	825	}
773		826
774	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	};
775		837
776	static struct coro *	838	static struct coro *
777	SvSTATE (SV *coro)	839	SvSTATE (SV *coro)
778	{	840	{
779	HV *stash;	841	HV *stash;
…		…
794	assert (mg->mg_type == PERL_MAGIC_ext);	856	assert (mg->mg_type == PERL_MAGIC_ext);
795	return (struct coro *)mg->mg_ptr;	857	return (struct coro *)mg->mg_ptr;
796	}	858	}
797		859
798	static void	860	static void
		861	prepare_transfer (struct transfer_args ta, SV prev, SV *next, int flags)
		862	{
		863	ta->prev = SvSTATE (prev);
		864	ta->next = SvSTATE (next);
		865	ta->flags = flags;
		866	}
		867
		868	static void
799	api_transfer (pTHX_ SV prev, SV next, int flags)	869	api_transfer (SV prev, SV next, int flags)
800	{	870	{
801	coro_state_transfer (aTHX_ SvSTATE (prev), SvSTATE (next), flags);	871	struct transfer_args ta;
		872
		873	prepare_transfer (&ta, prev, next, flags);
		874	TRANSFER (ta);
802	}	875	}
803		876
804	/ Coro ******************************************************************/	877	/ Coro ******************************************************************/
805		878
806	#define PRIO_MAX 3	879	#define PRIO_MAX 3
…		…
809	#define PRIO_LOW -1	882	#define PRIO_LOW -1
810	#define PRIO_IDLE -3	883	#define PRIO_IDLE -3
811	#define PRIO_MIN -4	884	#define PRIO_MIN -4
812		885
813	/* for Coro.pm */	886	/* for Coro.pm */
814	static GV coro_current, coro_idle;	887	static SV *coro_current;
815	static AV *coro_ready [PRIO_MAX-PRIO_MIN+1];	888	static AV *coro_ready [PRIO_MAX-PRIO_MIN+1];
816	static int coro_nready;	889	static int coro_nready;
817		890
818	static void	891	static void
819	coro_enq (pTHX_ SV *sv)	892	coro_enq (SV *coro_sv)
820	{	893	{
821	int prio;
822
823	if (SvTYPE (sv) != SVt_PVHV)
824	croak ("Coro::ready tried to enqueue something that is not a coroutine");
825
826	prio = SvSTATE (sv)->prio;
827
828	av_push (coro_ready [prio - PRIO_MIN], sv);	894	av_push (coro_ready [SvSTATE (coro_sv)->prio - PRIO_MIN], coro_sv);
829	coro_nready++;	895	coro_nready++;
830	}	896	}
831		897
832	static SV *	898	static SV *
833	coro_deq (pTHX_ int min_prio)	899	coro_deq (int min_prio)
834	{	900	{
835	int prio = PRIO_MAX - PRIO_MIN;	901	int prio = PRIO_MAX - PRIO_MIN;
836		902
837	min_prio -= PRIO_MIN;	903	min_prio -= PRIO_MIN;
838	if (min_prio < 0)	904	if (min_prio < 0)
…		…
846	}	912	}
847		913
848	return 0;	914	return 0;
849	}	915	}
850		916
851	static void	917	static int
852	api_ready (SV *coro)	918	api_ready (SV *coro_sv)
853	{	919	{
854	dTHX;	920	struct coro *coro;
855		921
856	if (SvROK (coro))	922	if (SvROK (coro_sv))
857	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;
858		936
859	LOCK;	937	LOCK;
860	coro_enq (aTHX_ SvREFCNT_inc (coro));	938	coro_enq (SvREFCNT_inc (coro_sv));
861	UNLOCK;	939	UNLOCK;
862	}
863		940
		941	return 1;
		942	}
		943
864	static void	944	static int
865	api_schedule (void)	945	api_is_ready (SV *coro_sv)
866	{	946	{
867	dTHX;	947	return !!SvSTATE (coro_sv)->flags & CF_READY;
		948	}
868		949
		950	static void
		951	prepare_schedule (struct transfer_args *ta)
		952	{
869	SV prev, next;	953	SV prev, next;
870	SV *current = GvSV (coro_current);
871		954
872	for (;;)	955	for (;;)
873	{	956	{
874	LOCK;	957	LOCK;
875
876	next = coro_deq (aTHX_ PRIO_MIN);	958	next = coro_deq (PRIO_MIN);
		959	UNLOCK;
877		960
878	if (next)	961	if (next)
879	break;	962	break;
880		963
881	UNLOCK;
882
883	{	964	{
884	dSP;	965	dSP;
885		966
886	ENTER;	967	ENTER;
887	SAVETMPS;	968	SAVETMPS;
888		969
889	PUSHMARK (SP);	970	PUSHMARK (SP);
890	PUTBACK;	971	PUTBACK;
891	call_sv (GvSV (coro_idle), G_DISCARD);	972	call_sv (get_sv ("Coro::idle", FALSE), G_DISCARD);
892		973
893	FREETMPS;	974	FREETMPS;
894	LEAVE;	975	LEAVE;
895	}	976	}
896	}	977	}
897		978
898	prev = SvRV (current);	979	prev = SvRV (coro_current);
899	SvRV (current) = next;	980	SvRV_set (coro_current, next);
900		981
901	/* free this only after the transfer */	982	/* free this only after the transfer */
		983	LOCK;
		984	free_coro_mortal ();
		985	UNLOCK;
902	coro_mortal = prev;	986	coro_mortal = prev;
903		987
904	UNLOCK;	988	assert (!SvROK(prev));//D
		989	assert (!SvROK(next));//D
905		990
906	coro_state_transfer (aTHX_ SvSTATE (prev), SvSTATE (next), TRANSFER_SAVE_ALL);	991	ta->prev = SvSTATE (prev);
907	}	992	ta->next = SvSTATE (next);
		993	ta->flags = TRANSFER_SAVE_ALL;
908		994
909	static int coro_cede_self;	995	assert (ta->flags & CF_READY);
		996	ta->next->flags &= ~CF_READY;
		997	}
		998
		999	static void
		1000	prepare_cede (struct transfer_args *ta)
		1001	{
		1002	api_ready (coro_current);
		1003
		1004	prepare_schedule (ta);
		1005	}
		1006
		1007	static void
		1008	api_schedule (void)
		1009	{
		1010	struct transfer_args ta;
		1011
		1012	prepare_schedule (&ta);
		1013	TRANSFER (ta);
		1014	}
910		1015
911	static void	1016	static void
912	api_cede (void)	1017	api_cede (void)
913	{	1018	{
914	dTHX;	1019	struct transfer_args ta;
915	SV *current = SvREFCNT_inc (SvRV (GvSV (coro_current)));
916		1020
917	LOCK;	1021	prepare_cede (&ta);
918		1022	TRANSFER (ta);
919	if (coro_cede_self)
920	{
921	AV *runqueue = coro_ready [PRIO_MAX - PRIO_MIN];
922	av_unshift (runqueue, 1);
923	av_store (runqueue, 0, current);
924	coro_nready++;
925	coro_cede_self = 0;
926	}
927	else
928	coro_enq (aTHX_ current);
929
930	UNLOCK;
931
932	api_schedule ();
933	}	1023	}
934		1024
935	MODULE = Coro::State PACKAGE = Coro::State	1025	MODULE = Coro::State PACKAGE = Coro::State
936		1026
937	PROTOTYPES: DISABLE	1027	PROTOTYPES: DISABLE
…		…
952	main_mainstack = PL_mainstack;	1042	main_mainstack = PL_mainstack;
953		1043
954	coroapi.ver = CORO_API_VERSION;	1044	coroapi.ver = CORO_API_VERSION;
955	coroapi.transfer = api_transfer;	1045	coroapi.transfer = api_transfer;
956		1046
957	Newz (0, main_stack, 1, coro_stack);
958	main_stack->idle_sp = (void *)-1;
959
960	assert (("PRIO_NORMAL must be 0", !PRIO_NORMAL));	1047	assert (("PRIO_NORMAL must be 0", !PRIO_NORMAL));
961	}	1048	}
962		1049
963	SV *	1050	SV *
964	new (char *klass, ...)	1051	new (char *klass, ...)
…		…
968	HV *hv;	1055	HV *hv;
969	int i;	1056	int i;
970		1057
971	Newz (0, coro, 1, struct coro);	1058	Newz (0, coro, 1, struct coro);
972	coro->args = newAV ();	1059	coro->args = newAV ();
		1060	coro->flags = CF_NEW;
973		1061
974	hv = newHV ();	1062	hv = newHV ();
975	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;
976	RETVAL = sv_bless (newRV_noinc ((SV *)hv), gv_stashpv (klass, 1));	1064	RETVAL = sv_bless (newRV_noinc ((SV *)hv), gv_stashpv (klass, 1));
977		1065
978	av_push (coro->args, newSVsv (RETVAL));
979	for (i = 1; i < items; i++)	1066	for (i = 1; i < items; i++)
980	av_push (coro->args, newSVsv (ST (i)));	1067	av_push (coro->args, newSVsv (ST (i)));
981
982	coro->stack = main_stack;
983	/coro->mainstack = 0; //actual work is done inside transfer /
984	/coro->stack = 0;/
985	}	1068	}
986	OUTPUT:	1069	OUTPUT:
987	RETVAL	1070	RETVAL
988		1071
989	void	1072	void
990	transfer (prev, next, flags)	1073	_set_stacklevel (...)
991	SV *prev	1074	ALIAS:
992	SV *next	1075	Coro::State::transfer = 1
993	int flags	1076	Coro::schedule = 2
		1077	Coro::cede = 3
994	CODE:	1078	CODE:
995	PUTBACK;
996	coro_state_transfer (aTHX_ SvSTATE (prev), SvSTATE (next), flags);
997	SPAGAIN;
998
999	int
1000	prio (Coro::State coro, int newprio = 0)
1001	ALIAS:
1002	nice = 1
1003	CODE:
1004	{	1079	{
1005	RETVAL = coro->prio;	1080	struct transfer_args ta;
1006		1081
1007	if (items > 1)	1082	switch (ix)
1008	{	1083	{
		1084	case 0:
		1085	ta.prev = (struct coro )INT2PTR (coro_cctx , SvIV (ST (0)));
		1086	ta.next = 0;
		1087	ta.flags = TRANSFER_SET_STACKLEVEL;
		1088	break;
		1089
		1090	case 1:
1009	if (ix)	1091	if (items != 3)
1010	newprio += coro->prio;	1092	croak ("Coro::State::transfer (prev,next,flags) expects three arguments, not %d", items);
1011		1093
1012	if (newprio < PRIO_MIN) newprio = PRIO_MIN;	1094	prepare_transfer (&ta, ST (0), ST (1), SvIV (ST (2)));
1013	if (newprio > PRIO_MAX) newprio = PRIO_MAX;	1095	break;
1014		1096
1015	coro->prio = newprio;	1097	case 2:
		1098	prepare_schedule (&ta);
		1099	break;
		1100
		1101	case 3:
		1102	prepare_cede (&ta);
		1103	break;
1016	}	1104	}
1017	}
1018		1105
1019	void	1106	TRANSFER (ta);
1020	_clear_idle_sp (Coro::State self)	1107	}
1021	CODE:
1022	self->stack->idle_sp = 0;
1023		1108
1024	void	1109	void
1025	_clone_state_from (SV dst, SV src)	1110	_clone_state_from (SV dst, SV src)
1026	CODE:	1111	CODE:
1027	{	1112	{
…		…
1038	int code	1123	int code
1039	PROTOTYPE: $	1124	PROTOTYPE: $
1040	CODE:	1125	CODE:
1041	_exit (code);	1126	_exit (code);
1042		1127
1043	MODULE = Coro::State PACKAGE = Coro::Cont	1128	int
		1129	cctx_count ()
		1130	CODE:
		1131	RETVAL = cctx_count;
		1132	OUTPUT:
		1133	RETVAL
1044		1134
1045	void	1135	int
1046	yield (...)	1136	cctx_idle ()
1047	PROTOTYPE: @	1137	CODE:
1048	CODE:	1138	RETVAL = cctx_idle;
1049	{	1139	OUTPUT:
1050	SV *yieldstack;	1140	RETVAL
1051	SV *sv;
1052	AV *defav = GvAV (PL_defgv);
1053	struct coro prev, next;
1054
1055	yieldstack = *hv_fetch (
1056	(HV *)SvRV (GvSV (coro_current)),
1057	"yieldstack", sizeof ("yieldstack") - 1,
1058	0
1059	);
1060
1061	/* set up @_ -- ugly */
1062	av_clear (defav);
1063	av_fill (defav, items - 1);
1064	while (items--)
1065	av_store (defav, items, SvREFCNT_inc (ST(items)));
1066
1067	sv = av_pop ((AV *)SvRV (yieldstack));
1068	prev = SvSTATE (av_fetch ((AV )SvRV (sv), 0, 0));
1069	next = SvSTATE (av_fetch ((AV )SvRV (sv), 1, 0));
1070	SvREFCNT_dec (sv);
1071
1072	coro_state_transfer (aTHX_ prev, next, 0);
1073	}
1074		1141
1075	MODULE = Coro::State PACKAGE = Coro	1142	MODULE = Coro::State PACKAGE = Coro
1076		1143
1077	BOOT:	1144	BOOT:
1078	{	1145	{
…		…
1085	newCONSTSUB (coro_stash, "PRIO_NORMAL", newSViv (PRIO_NORMAL));	1152	newCONSTSUB (coro_stash, "PRIO_NORMAL", newSViv (PRIO_NORMAL));
1086	newCONSTSUB (coro_stash, "PRIO_LOW", newSViv (PRIO_LOW));	1153	newCONSTSUB (coro_stash, "PRIO_LOW", newSViv (PRIO_LOW));
1087	newCONSTSUB (coro_stash, "PRIO_IDLE", newSViv (PRIO_IDLE));	1154	newCONSTSUB (coro_stash, "PRIO_IDLE", newSViv (PRIO_IDLE));
1088	newCONSTSUB (coro_stash, "PRIO_MIN", newSViv (PRIO_MIN));	1155	newCONSTSUB (coro_stash, "PRIO_MIN", newSViv (PRIO_MIN));
1089		1156
1090	coro_current = gv_fetchpv ("Coro::current", TRUE, SVt_PV);	1157	coro_current = get_sv ("Coro::current", FALSE);
1091	coro_idle = gv_fetchpv ("Coro::idle" , TRUE, SVt_PV);	1158	SvREADONLY_on (coro_current);
1092		1159
1093	for (i = PRIO_MAX - PRIO_MIN + 1; i--; )	1160	for (i = PRIO_MAX - PRIO_MIN + 1; i--; )
1094	coro_ready[i] = newAV ();	1161	coro_ready[i] = newAV ();
1095		1162
1096	{	1163	{
1097	SV *sv = perl_get_sv("Coro::API", 1);	1164	SV *sv = perl_get_sv("Coro::API", 1);
1098		1165
1099	coroapi.schedule = api_schedule;	1166	coroapi.schedule = api_schedule;
1100	coroapi.cede = api_cede;	1167	coroapi.cede = api_cede;
1101	coroapi.ready = api_ready;	1168	coroapi.ready = api_ready;
		1169	coroapi.is_ready = api_is_ready;
1102	coroapi.nready = &coro_nready;	1170	coroapi.nready = &coro_nready;
1103	coroapi.current = coro_current;	1171	coroapi.current = coro_current;
1104		1172
1105	GCoroAPI = &coroapi;	1173	GCoroAPI = &coroapi;
1106	sv_setiv (sv, (IV)&coroapi);	1174	sv_setiv (sv, (IV)&coroapi);
1107	SvREADONLY_on (sv);	1175	SvREADONLY_on (sv);
1108	}	1176	}
1109	}	1177	}
1110		1178
1111	void	1179	int
		1180	prio (Coro::State coro, int newprio = 0)
		1181	ALIAS:
		1182	nice = 1
		1183	CODE:
		1184	{
		1185	RETVAL = coro->prio;
		1186
		1187	if (items > 1)
		1188	{
		1189	if (ix)
		1190	newprio += coro->prio;
		1191
		1192	if (newprio < PRIO_MIN) newprio = PRIO_MIN;
		1193	if (newprio > PRIO_MAX) newprio = PRIO_MAX;
		1194
		1195	coro->prio = newprio;
		1196	}
		1197	}
		1198
		1199	SV *
1112	ready (SV *self)	1200	ready (SV *self)
1113	PROTOTYPE: $	1201	PROTOTYPE: $
1114	CODE:	1202	CODE:
1115	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
1116		1214
1117	int	1215	int
1118	nready (...)	1216	nready (...)
1119	PROTOTYPE:	1217	PROTOTYPE:
1120	CODE:	1218	CODE:
1121	RETVAL = coro_nready;	1219	RETVAL = coro_nready;
1122	OUTPUT:	1220	OUTPUT:
1123	RETVAL	1221	RETVAL
1124		1222
1125	void	1223	void
1126	schedule (...)	1224	_set_current (SV *current)
1127	PROTOTYPE:	1225	PROTOTYPE: $
1128	CODE:	1226	CODE:
1129	api_schedule ();	1227	SvREFCNT_dec (SvRV (coro_current));
1130		1228	SvRV_set (coro_current, SvREFCNT_inc (SvRV (current)));
1131	void
1132	_set_cede_self ()
1133	CODE:
1134	coro_cede_self = 1;
1135
1136	void
1137	cede (...)
1138	PROTOTYPE:
1139	CODE:
1140	api_cede ();
1141		1229
1142	MODULE = Coro::State PACKAGE = Coro::AIO	1230	MODULE = Coro::State PACKAGE = Coro::AIO
1143		1231
1144	SV *	1232	SV *
1145	_get_state ()	1233	_get_state ()

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Comparing Coro/Coro/State.xs (file contents): Revision 1.90 by root, Sat Nov 25 00:56:35 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 1.90 by root, Sat Nov 25 00:56:35 2006 UTC vs.
Revision 1.118 by root, Fri Dec 1 19:58:53 2006 UTC