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

Comparing Coro/Coro/State.xs (file contents):
Revision 1.91 by root, Sat Nov 25 01:14:11 2006 UTC vs.
Revision 1.117 by root, Fri Dec 1 19:41:06 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;	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;
654
655	static coro_stack *	645	static coro_cctx *
656	stack_get ()	646	cctx_get ()
657	{	647	{
658	coro_stack *stack;	648	coro_cctx *cctx;
659		649
660	if (stack_first)	650	if (cctx_first)
661	{	651	{
662	stack = stack_first;	652	cctx = cctx_first;
663	stack_first = stack->next;	653	cctx_first = cctx->next;
		654	--cctx_idle;
664	}	655	}
665	else	656	else
666	{	657	{
667	stack = stack_new ();	658	cctx = cctx_new ();
668	PL_op = PL_op->op_next;	659	PL_op = PL_op->op_next;
669	}	660	}
670		661
671	return stack;	662	return cctx;
672	}	663	}
673		664
674	static void	665	static void
675	stack_put (coro_stack *stack)	666	cctx_put (coro_cctx *cctx)
676	{	667	{
677	stack->next = stack_first;	668	/* free another cctx if overlimit */
678	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;
679	}	682	}
680		683
681	/* never call directly, always through the coro_state_transfer global variable */	684	/* never call directly, always through the coro_state_transfer global variable */
682	static void	685	static void NOINLINE
683	transfer_impl (pTHX_ struct coro prev, struct coro next, int flags)	686	transfer (struct coro prev, struct coro next, int flags)
684	{	687	{
685	dSTACKLEVEL;	688	dSTACKLEVEL;
686		689
687	/* sometimes transfer is only called to set idle_sp */	690	/* sometimes transfer is only called to set idle_sp */
688	if (!prev->stack->idle_sp)	691	if (flags == TRANSFER_SET_STACKLEVEL)
689	prev->stack->idle_sp = stacklevel;	692	((coro_cctx *)prev)->idle_sp = STACKLEVEL;
690
691	LOCK;
692
693	if (prev != next)	693	else if (prev != next)
694	{	694	{
695	coro_stack *prev_stack = prev->stack;	695	coro_cctx *prev__cctx;
696		696
697	/* possibly "free" the stack */	697	if (prev->flags & CF_NEW)
698	if (0 && prev_stack->idle_sp == stacklevel)
699	{	698	{
700	stack_put (prev_stack);	699	/* create a new empty context */
701	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;
702	}	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;
		715
		716	LOCK;
703		717
704	if (next->mainstack)	718	if (next->mainstack)
705	{	719	{
706	/* coroutine already started */	720	/* coroutine already started */
707	SAVE (prev, flags);	721	SAVE (prev, flags);
708	LOAD (next);	722	LOAD (next);
709	}	723	}
710	else	724	else
711	{	725	{
712	/* need to start coroutine */	726	/* need to start coroutine */
		727	assert (next->flags & CF_NEW);
		728	next->flags &= ~CF_NEW;
713	/* first get rid of the old state */	729	/* first get rid of the old state */
714	SAVE (prev, -1);	730	SAVE (prev, -1);
715	/* setup coroutine call */	731	/* setup coroutine call */
716	setup_coro (next);	732	setup_coro (next);
717	/* need to change stack from main_stack to real one */	733	/* need a new stack */
718	next->stack = 0;	734	assert (!next->stack);
719	}	735	}
720		736
		737	prev__cctx = prev->cctx;
		738
		739	/* possibly "free" the cctx */
		740	if (prev__cctx->idle_sp == STACKLEVEL && 0)
		741	{
		742	/* I assume that STACKLEVEL is a stronger indicator than PL_top_env changes */
		743	assert (PL_top_env == prev__cctx->top_env);
		744
		745	prev->cctx = 0;
		746
		747	cctx_put (prev__cctx);
		748	prev__cctx->inuse = 0;
		749	}
		750
721	if (!next->stack)	751	if (!next->cctx)
722	next->stack = stack_get ();	752	{
		753	next->cctx = cctx_get ();
		754	assert (!next->cctx->inuse);
		755	next->cctx->inuse = 1;
		756	}
723		757
724	if (prev_stack != next->stack)	758	if (prev__cctx != next->cctx)
		759	{
		760	prev__cctx->top_env = PL_top_env;
		761	PL_top_env = next->cctx->top_env;
725	coro_transfer (&prev_stack->cctx, &next->stack->cctx);	762	coro_transfer (&prev__cctx->cctx, &next->cctx->cctx);
		763	}
		764
		765	free_coro_mortal ();
		766
		767	UNLOCK;
726	}	768	}
727
728	transfer_tail ();
729	}	769	}
730		770
731	/* use this function pointer to call the above function */	771	struct transfer_args
732	/* this is done to increase chances of the compiler not inlining the call */	772	{
733	void (coro_state_transfer)(pTHX_ struct coro prev, struct coro *next, int flags) = transfer_impl;	773	struct coro prev, next;
		774	int flags;
		775	};
		776
		777	#define TRANSFER(ta) transfer ((ta).prev, (ta).next, (ta).flags)
734		778
735	static void	779	static void
736	coro_state_destroy (struct coro *coro)	780	coro_state_destroy (struct coro *coro)
737	{	781	{
738	if (coro->refcnt--)	782	if (coro->refcnt--)
…		…
740		784
741	if (coro->mainstack && coro->mainstack != main_mainstack)	785	if (coro->mainstack && coro->mainstack != main_mainstack)
742	{	786	{
743	struct coro temp;	787	struct coro temp;
744		788
		789	if (coro->flags & CF_RUNNING)
		790	croak ("FATAL: tried to destroy currently running coroutine");
		791
745	SAVE (aTHX_ (&temp), TRANSFER_SAVE_ALL);	792	SAVE ((&temp), TRANSFER_SAVE_ALL);
746	LOAD (aTHX_ coro);	793	LOAD (coro);
747		794
748	destroy_stacks (aTHX);	795	coro_destroy_stacks ();
749		796
750	LOAD ((&temp)); /* this will get rid of defsv etc.. */	797	LOAD ((&temp)); /* this will get rid of defsv etc.. */
751		798
752	coro->mainstack = 0;	799	coro->mainstack = 0;
753	}	800	}
754		801
755	stack_free (coro->stack);	802	cctx_destroy (coro->cctx);
756	SvREFCNT_dec (coro->args);	803	SvREFCNT_dec (coro->args);
757	Safefree (coro);	804	Safefree (coro);
758	}	805	}
759		806
760	static int	807	static int
761	coro_state_clear (SV sv, MAGIC mg)	808	coro_state_clear (pTHX_ SV sv, MAGIC mg)
762	{	809	{
763	struct coro coro = (struct coro )mg->mg_ptr;	810	struct coro coro = (struct coro )mg->mg_ptr;
764	mg->mg_ptr = 0;	811	mg->mg_ptr = 0;
765		812
766	coro_state_destroy (coro);	813	coro_state_destroy (coro);
767		814
768	return 0;	815	return 0;
769	}	816	}
770		817
771	static int	818	static int
772	coro_state_dup (MAGIC mg, CLONE_PARAMS params)	819	coro_state_dup (pTHX_ MAGIC mg, CLONE_PARAMS params)
773	{	820	{
774	struct coro coro = (struct coro )mg->mg_ptr;	821	struct coro coro = (struct coro )mg->mg_ptr;
775		822
776	++coro->refcnt;	823	++coro->refcnt;
777		824
778	return 0;	825	return 0;
779	}	826	}
780		827
781	static MGVTBL coro_state_vtbl = { 0, 0, 0, 0, coro_state_clear, 0, coro_state_dup, 0 };	828	static MGVTBL coro_state_vtbl = {
		829	0, 0, 0, 0,
		830	coro_state_clear,
		831	0,
		832	#ifdef MGf_DUP
		833	coro_state_dup,
		834	#else
		835	# define MGf_DUP 0
		836	#endif
		837	};
782		838
783	static struct coro *	839	static struct coro *
784	SvSTATE (SV *coro)	840	SvSTATE (SV *coro)
785	{	841	{
786	HV *stash;	842	HV *stash;
…		…
801	assert (mg->mg_type == PERL_MAGIC_ext);	857	assert (mg->mg_type == PERL_MAGIC_ext);
802	return (struct coro *)mg->mg_ptr;	858	return (struct coro *)mg->mg_ptr;
803	}	859	}
804		860
805	static void	861	static void
		862	prepare_transfer (struct transfer_args ta, SV prev, SV *next, int flags)
		863	{
		864	ta->prev = SvSTATE (prev);
		865	ta->next = SvSTATE (next);
		866	ta->flags = flags;
		867	}
		868
		869	static void
806	api_transfer (pTHX_ SV prev, SV next, int flags)	870	api_transfer (SV prev, SV next, int flags)
807	{	871	{
808	coro_state_transfer (aTHX_ SvSTATE (prev), SvSTATE (next), flags);	872	struct transfer_args ta;
		873
		874	prepare_transfer (&ta, prev, next, flags);
		875	TRANSFER (ta);
809	}	876	}
810		877
811	/ Coro ******************************************************************/	878	/ Coro ******************************************************************/
812		879
813	#define PRIO_MAX 3	880	#define PRIO_MAX 3
…		…
816	#define PRIO_LOW -1	883	#define PRIO_LOW -1
817	#define PRIO_IDLE -3	884	#define PRIO_IDLE -3
818	#define PRIO_MIN -4	885	#define PRIO_MIN -4
819		886
820	/* for Coro.pm */	887	/* for Coro.pm */
821	static GV coro_current, coro_idle;	888	static SV *coro_current;
822	static AV *coro_ready [PRIO_MAX-PRIO_MIN+1];	889	static AV *coro_ready [PRIO_MAX-PRIO_MIN+1];
823	static int coro_nready;	890	static int coro_nready;
824		891
825	static void	892	static void
826	coro_enq (pTHX_ SV *sv)	893	coro_enq (SV *coro_sv)
827	{	894	{
828	int prio;
829
830	if (SvTYPE (sv) != SVt_PVHV)
831	croak ("Coro::ready tried to enqueue something that is not a coroutine");
832
833	prio = SvSTATE (sv)->prio;
834
835	av_push (coro_ready [prio - PRIO_MIN], sv);	895	av_push (coro_ready [SvSTATE (coro_sv)->prio - PRIO_MIN], coro_sv);
836	coro_nready++;	896	coro_nready++;
837	}	897	}
838		898
839	static SV *	899	static SV *
840	coro_deq (pTHX_ int min_prio)	900	coro_deq (int min_prio)
841	{	901	{
842	int prio = PRIO_MAX - PRIO_MIN;	902	int prio = PRIO_MAX - PRIO_MIN;
843		903
844	min_prio -= PRIO_MIN;	904	min_prio -= PRIO_MIN;
845	if (min_prio < 0)	905	if (min_prio < 0)
…		…
853	}	913	}
854		914
855	return 0;	915	return 0;
856	}	916	}
857		917
858	static void	918	static int
859	api_ready (SV *coro)	919	api_ready (SV *coro_sv)
860	{	920	{
861	dTHX;	921	struct coro *coro;
862		922
863	if (SvROK (coro))	923	if (SvROK (coro_sv))
864	coro = SvRV (coro);	924	coro_sv = SvRV (coro_sv);
		925
		926	coro = SvSTATE (coro_sv);
		927
		928	if (coro->flags & CF_READY)
		929	return 0;
		930
		931	#if 0 /* this is actually harmless */
		932	if (coro->flags & CF_RUNNING)
		933	croak ("Coro::ready called on currently running coroutine");
		934	#endif
		935
		936	coro->flags \|= CF_READY;
865		937
866	LOCK;	938	LOCK;
867	coro_enq (aTHX_ SvREFCNT_inc (coro));	939	coro_enq (SvREFCNT_inc (coro_sv));
868	UNLOCK;	940	UNLOCK;
869	}
870		941
		942	return 1;
		943	}
		944
871	static void	945	static int
872	api_schedule (void)	946	api_is_ready (SV *coro_sv)
873	{	947	{
874	dTHX;	948	return !!SvSTATE (coro_sv)->flags & CF_READY;
		949	}
875		950
		951	static void
		952	prepare_schedule (struct transfer_args *ta)
		953	{
876	SV prev, next;	954	SV prev, next;
877	SV *current = GvSV (coro_current);
878		955
879	for (;;)	956	for (;;)
880	{	957	{
881	LOCK;	958	LOCK;
882
883	next = coro_deq (aTHX_ PRIO_MIN);	959	next = coro_deq (PRIO_MIN);
		960	UNLOCK;
884		961
885	if (next)	962	if (next)
886	break;	963	break;
887		964
888	UNLOCK;
889
890	{	965	{
891	dSP;	966	dSP;
892		967
893	ENTER;	968	ENTER;
894	SAVETMPS;	969	SAVETMPS;
895		970
896	PUSHMARK (SP);	971	PUSHMARK (SP);
897	PUTBACK;	972	PUTBACK;
898	call_sv (GvSV (coro_idle), G_DISCARD);	973	call_sv (get_sv ("Coro::idle", FALSE), G_DISCARD);
899		974
900	FREETMPS;	975	FREETMPS;
901	LEAVE;	976	LEAVE;
902	}	977	}
903	}	978	}
904		979
905	prev = SvRV (current);	980	prev = SvRV (coro_current);
906	SvRV (current) = next;	981	SvRV_set (coro_current, next);
907		982
908	/* free this only after the transfer */	983	/* free this only after the transfer */
		984	LOCK;
		985	free_coro_mortal ();
		986	UNLOCK;
909	coro_mortal = prev;	987	coro_mortal = prev;
910		988
911	UNLOCK;	989	assert (!SvROK(prev));//D
		990	assert (!SvROK(next));//D
912		991
913	coro_state_transfer (aTHX_ SvSTATE (prev), SvSTATE (next), TRANSFER_SAVE_ALL);	992	ta->prev = SvSTATE (prev);
914	}	993	ta->next = SvSTATE (next);
		994	ta->flags = TRANSFER_SAVE_ALL;
915		995
916	static int coro_cede_self;	996	assert (ta->flags & CF_READY);
		997	ta->next->flags &= ~CF_READY;
		998	}
		999
		1000	static void
		1001	prepare_cede (struct transfer_args *ta)
		1002	{
		1003	api_ready (coro_current);
		1004
		1005	prepare_schedule (ta);
		1006	}
		1007
		1008	static void
		1009	api_schedule (void)
		1010	{
		1011	struct transfer_args ta;
		1012
		1013	prepare_schedule (&ta);
		1014	TRANSFER (ta);
		1015	}
917		1016
918	static void	1017	static void
919	api_cede (void)	1018	api_cede (void)
920	{	1019	{
921	dTHX;	1020	struct transfer_args ta;
922	SV *current = SvREFCNT_inc (SvRV (GvSV (coro_current)));
923		1021
924	LOCK;	1022	prepare_cede (&ta);
925		1023	TRANSFER (ta);
926	if (coro_cede_self)
927	{
928	AV *runqueue = coro_ready [PRIO_MAX - PRIO_MIN];
929	av_unshift (runqueue, 1);
930	av_store (runqueue, 0, current);
931	coro_nready++;
932	coro_cede_self = 0;
933	}
934	else
935	coro_enq (aTHX_ current);
936
937	UNLOCK;
938
939	api_schedule ();
940	}	1024	}
941		1025
942	MODULE = Coro::State PACKAGE = Coro::State	1026	MODULE = Coro::State PACKAGE = Coro::State
943		1027
944	PROTOTYPES: DISABLE	1028	PROTOTYPES: DISABLE
…		…
959	main_mainstack = PL_mainstack;	1043	main_mainstack = PL_mainstack;
960		1044
961	coroapi.ver = CORO_API_VERSION;	1045	coroapi.ver = CORO_API_VERSION;
962	coroapi.transfer = api_transfer;	1046	coroapi.transfer = api_transfer;
963		1047
964	Newz (0, main_stack, 1, coro_stack);
965	main_stack->idle_sp = (void *)-1;
966
967	assert (("PRIO_NORMAL must be 0", !PRIO_NORMAL));	1048	assert (("PRIO_NORMAL must be 0", !PRIO_NORMAL));
968	}	1049	}
969		1050
970	SV *	1051	SV *
971	new (char *klass, ...)	1052	new (char *klass, ...)
…		…
975	HV *hv;	1056	HV *hv;
976	int i;	1057	int i;
977		1058
978	Newz (0, coro, 1, struct coro);	1059	Newz (0, coro, 1, struct coro);
979	coro->args = newAV ();	1060	coro->args = newAV ();
		1061	coro->flags = CF_NEW;
980		1062
981	hv = newHV ();	1063	hv = newHV ();
982	sv_magicext ((SV )hv, 0, PERL_MAGIC_ext, &coro_state_vtbl, (char )coro, 0)->mg_flags \|= MGf_DUP;	1064	sv_magicext ((SV )hv, 0, PERL_MAGIC_ext, &coro_state_vtbl, (char )coro, 0)->mg_flags \|= MGf_DUP;
983	RETVAL = sv_bless (newRV_noinc ((SV *)hv), gv_stashpv (klass, 1));	1065	RETVAL = sv_bless (newRV_noinc ((SV *)hv), gv_stashpv (klass, 1));
984		1066
985	av_push (coro->args, newSVsv (RETVAL));
986	for (i = 1; i < items; i++)	1067	for (i = 1; i < items; i++)
987	av_push (coro->args, newSVsv (ST (i)));	1068	av_push (coro->args, newSVsv (ST (i)));
988
989	coro->stack = main_stack;
990	/coro->mainstack = 0; //actual work is done inside transfer /
991	/coro->stack = 0;/
992	}	1069	}
993	OUTPUT:	1070	OUTPUT:
994	RETVAL	1071	RETVAL
995		1072
996	void	1073	void
997	transfer (prev, next, flags)	1074	_set_stacklevel (...)
998	SV *prev	1075	ALIAS:
999	SV *next	1076	Coro::State::transfer = 1
1000	int flags	1077	Coro::schedule = 2
		1078	Coro::cede = 3
		1079	Coro::Cont::yield = 4
1001	CODE:	1080	CODE:
1002	PUTBACK;
1003	coro_state_transfer (aTHX_ SvSTATE (prev), SvSTATE (next), flags);
1004	SPAGAIN;
1005
1006	int
1007	prio (Coro::State coro, int newprio = 0)
1008	ALIAS:
1009	nice = 1
1010	CODE:
1011	{	1081	{
1012	RETVAL = coro->prio;	1082	struct transfer_args ta;
1013		1083
1014	if (items > 1)	1084	switch (ix)
1015	{	1085	{
		1086	case 0:
		1087	ta.prev = (struct coro )INT2PTR (coro_cctx , SvIV (ST (0)));
		1088	ta.next = 0;
		1089	ta.flags = TRANSFER_SET_STACKLEVEL;
		1090	break;
		1091
		1092	case 1:
1016	if (ix)	1093	if (items != 3)
1017	newprio += coro->prio;	1094	croak ("Coro::State::transfer (prev,next,flags) expects three arguments, not %d", items);
1018		1095
1019	if (newprio < PRIO_MIN) newprio = PRIO_MIN;	1096	prepare_transfer (&ta, ST (0), ST (1), SvIV (ST (2)));
1020	if (newprio > PRIO_MAX) newprio = PRIO_MAX;	1097	break;
1021		1098
1022	coro->prio = newprio;	1099	case 2:
		1100	prepare_schedule (&ta);
		1101	break;
		1102
		1103	case 3:
		1104	prepare_cede (&ta);
		1105	break;
		1106
		1107	case 4:
		1108	{
		1109	SV *yieldstack;
		1110	SV *sv;
		1111	AV *defav = GvAV (PL_defgv);
		1112
		1113	yieldstack = *hv_fetch (
		1114	(HV *)SvRV (coro_current),
		1115	"yieldstack", sizeof ("yieldstack") - 1,
		1116	0
		1117	);
		1118
		1119	/* set up @_ -- ugly */
		1120	av_clear (defav);
		1121	av_fill (defav, items - 1);
		1122	while (items--)
		1123	av_store (defav, items, SvREFCNT_inc (ST(items)));
		1124
		1125	sv = av_pop ((AV *)SvRV (yieldstack));
		1126	ta.prev = SvSTATE (av_fetch ((AV )SvRV (sv), 0, 0));
		1127	ta.next = SvSTATE (av_fetch ((AV )SvRV (sv), 1, 0));
		1128	ta.flags = 0;
		1129	SvREFCNT_dec (sv);
		1130	}
		1131	break;
		1132
1023	}	1133	}
1024	}
1025		1134
1026	void	1135	TRANSFER (ta);
1027	_clear_idle_sp (Coro::State self)	1136	}
1028	CODE:
1029	self->stack->idle_sp = 0;
1030		1137
1031	void	1138	void
1032	_clone_state_from (SV dst, SV src)	1139	_clone_state_from (SV dst, SV src)
1033	CODE:	1140	CODE:
1034	{	1141	{
…		…
1045	int code	1152	int code
1046	PROTOTYPE: $	1153	PROTOTYPE: $
1047	CODE:	1154	CODE:
1048	_exit (code);	1155	_exit (code);
1049		1156
1050	MODULE = Coro::State PACKAGE = Coro::Cont	1157	int
		1158	cctx_count ()
		1159	CODE:
		1160	RETVAL = cctx_count;
		1161	OUTPUT:
		1162	RETVAL
1051		1163
1052	void	1164	int
1053	yield (...)	1165	cctx_idle ()
1054	PROTOTYPE: @	1166	CODE:
1055	CODE:	1167	RETVAL = cctx_idle;
1056	{	1168	OUTPUT:
1057	SV *yieldstack;	1169	RETVAL
1058	SV *sv;
1059	AV *defav = GvAV (PL_defgv);
1060	struct coro prev, next;
1061
1062	yieldstack = *hv_fetch (
1063	(HV *)SvRV (GvSV (coro_current)),
1064	"yieldstack", sizeof ("yieldstack") - 1,
1065	0
1066	);
1067
1068	/* set up @_ -- ugly */
1069	av_clear (defav);
1070	av_fill (defav, items - 1);
1071	while (items--)
1072	av_store (defav, items, SvREFCNT_inc (ST(items)));
1073
1074	sv = av_pop ((AV *)SvRV (yieldstack));
1075	prev = SvSTATE (av_fetch ((AV )SvRV (sv), 0, 0));
1076	next = SvSTATE (av_fetch ((AV )SvRV (sv), 1, 0));
1077	SvREFCNT_dec (sv);
1078
1079	coro_state_transfer (aTHX_ prev, next, 0);
1080	}
1081		1170
1082	MODULE = Coro::State PACKAGE = Coro	1171	MODULE = Coro::State PACKAGE = Coro
1083		1172
1084	BOOT:	1173	BOOT:
1085	{	1174	{
…		…
1092	newCONSTSUB (coro_stash, "PRIO_NORMAL", newSViv (PRIO_NORMAL));	1181	newCONSTSUB (coro_stash, "PRIO_NORMAL", newSViv (PRIO_NORMAL));
1093	newCONSTSUB (coro_stash, "PRIO_LOW", newSViv (PRIO_LOW));	1182	newCONSTSUB (coro_stash, "PRIO_LOW", newSViv (PRIO_LOW));
1094	newCONSTSUB (coro_stash, "PRIO_IDLE", newSViv (PRIO_IDLE));	1183	newCONSTSUB (coro_stash, "PRIO_IDLE", newSViv (PRIO_IDLE));
1095	newCONSTSUB (coro_stash, "PRIO_MIN", newSViv (PRIO_MIN));	1184	newCONSTSUB (coro_stash, "PRIO_MIN", newSViv (PRIO_MIN));
1096		1185
1097	coro_current = gv_fetchpv ("Coro::current", TRUE, SVt_PV);	1186	coro_current = get_sv ("Coro::current", FALSE);
1098	coro_idle = gv_fetchpv ("Coro::idle" , TRUE, SVt_PV);	1187	SvREADONLY_on (coro_current);
1099		1188
1100	for (i = PRIO_MAX - PRIO_MIN + 1; i--; )	1189	for (i = PRIO_MAX - PRIO_MIN + 1; i--; )
1101	coro_ready[i] = newAV ();	1190	coro_ready[i] = newAV ();
1102		1191
1103	{	1192	{
1104	SV *sv = perl_get_sv("Coro::API", 1);	1193	SV *sv = perl_get_sv("Coro::API", 1);
1105		1194
1106	coroapi.schedule = api_schedule;	1195	coroapi.schedule = api_schedule;
1107	coroapi.cede = api_cede;	1196	coroapi.cede = api_cede;
1108	coroapi.ready = api_ready;	1197	coroapi.ready = api_ready;
		1198	coroapi.is_ready = api_is_ready;
1109	coroapi.nready = &coro_nready;	1199	coroapi.nready = &coro_nready;
1110	coroapi.current = coro_current;	1200	coroapi.current = coro_current;
1111		1201
1112	GCoroAPI = &coroapi;	1202	GCoroAPI = &coroapi;
1113	sv_setiv (sv, (IV)&coroapi);	1203	sv_setiv (sv, (IV)&coroapi);
1114	SvREADONLY_on (sv);	1204	SvREADONLY_on (sv);
1115	}	1205	}
1116	}	1206	}
1117		1207
1118	void	1208	int
		1209	prio (Coro::State coro, int newprio = 0)
		1210	ALIAS:
		1211	nice = 1
		1212	CODE:
		1213	{
		1214	RETVAL = coro->prio;
		1215
		1216	if (items > 1)
		1217	{
		1218	if (ix)
		1219	newprio += coro->prio;
		1220
		1221	if (newprio < PRIO_MIN) newprio = PRIO_MIN;
		1222	if (newprio > PRIO_MAX) newprio = PRIO_MAX;
		1223
		1224	coro->prio = newprio;
		1225	}
		1226	}
		1227
		1228	SV *
1119	ready (SV *self)	1229	ready (SV *self)
1120	PROTOTYPE: $	1230	PROTOTYPE: $
1121	CODE:	1231	CODE:
1122	api_ready (self);	1232	RETVAL = boolSV (api_ready (self));
		1233	OUTPUT:
		1234	RETVAL
		1235
		1236	SV *
		1237	is_ready (SV *self)
		1238	PROTOTYPE: $
		1239	CODE:
		1240	RETVAL = boolSV (api_is_ready (self));
		1241	OUTPUT:
		1242	RETVAL
1123		1243
1124	int	1244	int
1125	nready (...)	1245	nready (...)
1126	PROTOTYPE:	1246	PROTOTYPE:
1127	CODE:	1247	CODE:
1128	RETVAL = coro_nready;	1248	RETVAL = coro_nready;
1129	OUTPUT:	1249	OUTPUT:
1130	RETVAL	1250	RETVAL
1131		1251
1132	void	1252	void
1133	schedule (...)	1253	_set_current (SV *current)
1134	PROTOTYPE:	1254	PROTOTYPE: $
1135	CODE:	1255	CODE:
1136	api_schedule ();	1256	SvREFCNT_dec (SvRV (coro_current));
1137		1257	SvRV_set (coro_current, SvREFCNT_inc (SvRV (current)));
1138	void
1139	_set_cede_self ()
1140	CODE:
1141	coro_cede_self = 1;
1142
1143	void
1144	cede (...)
1145	PROTOTYPE:
1146	CODE:
1147	api_cede ();
1148		1258
1149	MODULE = Coro::State PACKAGE = Coro::AIO	1259	MODULE = Coro::State PACKAGE = Coro::AIO
1150		1260
1151	SV *	1261	SV *
1152	_get_state ()	1262	_get_state ()

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Comparing Coro/Coro/State.xs (file contents): Revision 1.91 by root, Sat Nov 25 01:14:11 2006 UTC vs. Revision 1.117 by root, Fri Dec 1 19:41:06 2006 UTC

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Comparing Coro/Coro/State.xs (file contents):
Revision 1.91 by root, Sat Nov 25 01:14:11 2006 UTC vs.
Revision 1.117 by root, Fri Dec 1 19:41:06 2006 UTC