[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 1.116 by root, Fri Dec 1 14:01:43 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, /* coroutine is running */
		136	CF_READY, /* coroutine is ready */
		137	};
		138
		139	/* this is a structure representing a perl-level coroutine */
103	struct coro {	140	struct coro {
		141	/* the c coroutine allocated to this perl coroutine, if any */
		142	coro_cctx *cctx;
		143
		144	/* data associated with this coroutine (initial args) */
		145	AV *args;
		146	int refcnt;
		147	int flags;
		148
104	/* optionally saved, might be zero */	149	/* optionally saved, might be zero */
105	AV *defav;	150	AV *defav;
106	SV *defsv;	151	SV *defsv;
107	SV *errsv;	152	SV *errsv;
108		153
109	/* saved global state not related to stacks */	154	#define VAR(name,type) type name;
110	U8 dowarn;	155	# include "state.h"
111	I32 in_eval;	156	#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		157
147	/* coro process data */	158	/* coro process data */
148	int prio;	159	int prio;
149
150	/* data associated with this coroutine (initial args) */
151	AV *args;
152	int refcnt;
153	};	160	};
154		161
155	typedef struct coro *Coro__State;	162	typedef struct coro *Coro__State;
156	typedef struct coro *Coro__State_or_hashref;	163	typedef struct coro *Coro__State_or_hashref;
157		164
158	static AV *	165	static AV *
159	coro_clone_padlist (pTHX_ CV *cv)	166	coro_clone_padlist (CV *cv)
160	{	167	{
161	AV *padlist = CvPADLIST (cv);	168	AV *padlist = CvPADLIST (cv);
162	AV newpadlist, newpad;	169	AV newpadlist, newpad;
163		170
164	newpadlist = newAV ();	171	newpadlist = newAV ();
165	AvREAL_off (newpadlist);	172	AvREAL_off (newpadlist);
166	#if PERL_VERSION < 9	173	#if PERL_VERSION_ATLEAST (5,9,0)
		174	Perl_pad_push (aTHX_ padlist, AvFILLp (padlist) + 1);
		175	#else
167	Perl_pad_push (aTHX_ padlist, AvFILLp (padlist) + 1, 1);	176	Perl_pad_push (aTHX_ padlist, AvFILLp (padlist) + 1, 1);
168	#else
169	Perl_pad_push (aTHX_ padlist, AvFILLp (padlist) + 1);
170	#endif	177	#endif
171	newpad = (AV *)AvARRAY (padlist)[AvFILLp (padlist)];	178	newpad = (AV *)AvARRAY (padlist)[AvFILLp (padlist)];
172	--AvFILLp (padlist);	179	--AvFILLp (padlist);
173		180
174	av_store (newpadlist, 0, SvREFCNT_inc (*av_fetch (padlist, 0, FALSE)));	181	av_store (newpadlist, 0, SvREFCNT_inc (*av_fetch (padlist, 0, FALSE)));
…		…
176		183
177	return newpadlist;	184	return newpadlist;
178	}	185	}
179		186
180	static void	187	static void
181	free_padlist (pTHX_ AV *padlist)	188	free_padlist (AV *padlist)
182	{	189	{
183	/* may be during global destruction */	190	/* may be during global destruction */
184	if (SvREFCNT (padlist))	191	if (SvREFCNT (padlist))
185	{	192	{
186	I32 i = AvFILLp (padlist);	193	I32 i = AvFILLp (padlist);
…		…
207	AV *padlist;	214	AV *padlist;
208	AV av = (AV )mg->mg_obj;	215	AV av = (AV )mg->mg_obj;
209		216
210	/* casting is fun. */	217	/* casting is fun. */
211	while (&PL_sv_undef != (SV )(padlist = (AV )av_pop (av)))	218	while (&PL_sv_undef != (SV )(padlist = (AV )av_pop (av)))
212	free_padlist (aTHX_ padlist);	219	free_padlist (padlist);
213		220
214	SvREFCNT_dec (av);	221	SvREFCNT_dec (av);
215		222
216	return 0;	223	return 0;
217	}	224	}
218		225
219	#define PERL_MAGIC_coro PERL_MAGIC_ext	226	#define PERL_MAGIC_coro PERL_MAGIC_ext
220		227
221	static MGVTBL vtbl_coro = {0, 0, 0, 0, coro_cv_free};	228	static MGVTBL vtbl_coro = {0, 0, 0, 0, coro_cv_free};
222		229
		230	#define CORO_MAGIC(cv) \
		231	SvMAGIC (cv) \
		232	? SvMAGIC (cv)->mg_type == PERL_MAGIC_coro \
		233	? SvMAGIC (cv) \
		234	: mg_find ((SV *)cv, PERL_MAGIC_coro) \
		235	: 0
		236
223	/* the next two functions merely cache the padlists */	237	/* the next two functions merely cache the padlists */
224	static void	238	static void
225	get_padlist (pTHX_ CV *cv)	239	get_padlist (CV *cv)
226	{	240	{
227	MAGIC mg = mg_find ((SV )cv, PERL_MAGIC_coro);	241	MAGIC *mg = CORO_MAGIC (cv);
		242	AV *av;
228		243
229	if (mg && AvFILLp ((AV *)mg->mg_obj) >= 0)	244	if (mg && AvFILLp ((av = (AV *)mg->mg_obj)) >= 0)
230	CvPADLIST (cv) = (AV )av_pop ((AV )mg->mg_obj);	245	CvPADLIST (cv) = (AV *)AvARRAY (av)[AvFILLp (av)--];
231	else	246	else
232	{	247	{
233	#if 0	248	#if 0
234	/* this should work - but it doesn't :( */	249	/* this is probably cleaner, but also slower? */
235	CV *cp = Perl_cv_clone (aTHX_ cv);	250	CV *cp = Perl_cv_clone (cv);
236	CvPADLIST (cv) = CvPADLIST (cp);	251	CvPADLIST (cv) = CvPADLIST (cp);
237	CvPADLIST (cp) = 0;	252	CvPADLIST (cp) = 0;
238	SvREFCNT_dec (cp);	253	SvREFCNT_dec (cp);
239	#else	254	#else
240	CvPADLIST (cv) = coro_clone_padlist (aTHX_ cv);	255	CvPADLIST (cv) = coro_clone_padlist (cv);
241	#endif	256	#endif
242	}	257	}
243	}	258	}
244		259
245	static void	260	static void
246	put_padlist (pTHX_ CV *cv)	261	put_padlist (CV *cv)
247	{	262	{
248	MAGIC mg = mg_find ((SV )cv, PERL_MAGIC_coro);	263	MAGIC *mg = CORO_MAGIC (cv);
		264	AV *av;
249		265
250	if (!mg)	266	if (!mg)
251	{	267	{
252	sv_magic ((SV *)cv, 0, PERL_MAGIC_coro, 0, 0);	268	sv_magic ((SV *)cv, 0, PERL_MAGIC_coro, 0, 0);
253	mg = mg_find ((SV *)cv, PERL_MAGIC_coro);	269	mg = mg_find ((SV *)cv, PERL_MAGIC_coro);
254	mg->mg_virtual = &vtbl_coro;	270	mg->mg_virtual = &vtbl_coro;
255	mg->mg_obj = (SV *)newAV ();	271	mg->mg_obj = (SV *)newAV ();
256	}	272	}
257		273
258	av_push ((AV )mg->mg_obj, (SV )CvPADLIST (cv));	274	av = (AV *)mg->mg_obj;
		275
		276	if (AvFILLp (av) >= AvMAX (av))
		277	av_extend (av, AvMAX (av) + 1);
		278
		279	AvARRAY (av)[++AvFILLp (av)] = (SV *)CvPADLIST (cv);
259	}	280	}
260		281
261	#define SB do {	282	#define SB do {
262	#define SE } while (0)	283	#define SE } while (0)
263		284
264	#define LOAD(state) load_state(aTHX_ (state));	285	#define LOAD(state) load_state((state));
265	#define SAVE(state,flags) save_state(aTHX_ (state),(flags));	286	#define SAVE(state,flags) save_state((state),(flags));
266		287
267	#define REPLACE_SV(sv,val) SB SvREFCNT_dec(sv); (sv) = (val); (val) = 0; SE	288	#define REPLACE_SV(sv,val) SB SvREFCNT_dec(sv); (sv) = (val); (val) = 0; SE
268		289
269	static void	290	static void
270	load_state(pTHX_ Coro__State c)	291	load_state(Coro__State c)
271	{	292	{
272	PL_dowarn = c->dowarn;	293	#define VAR(name,type) PL_ ## name = c->name;
273	PL_in_eval = c->in_eval;	294	# include "state.h"
274		295	#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		296
307	if (c->defav) REPLACE_SV (GvAV (PL_defgv), c->defav);	297	if (c->defav) REPLACE_SV (GvAV (PL_defgv), c->defav);
308	if (c->defsv) REPLACE_SV (DEFSV , c->defsv);	298	if (c->defsv) REPLACE_SV (DEFSV , c->defsv);
309	if (c->errsv) REPLACE_SV (ERRSV , c->errsv);	299	if (c->errsv) REPLACE_SV (ERRSV , c->errsv);
310		300
…		…
313	CV *cv;	303	CV *cv;
314		304
315	/* now do the ugly restore mess */	305	/* now do the ugly restore mess */
316	while ((cv = (CV *)POPs))	306	while ((cv = (CV *)POPs))
317	{	307	{
318	AV padlist = (AV )POPs;
319
320	if (padlist)
321	{
322	put_padlist (aTHX_ cv); /* mark this padlist as available */	308	put_padlist (cv); /* mark this padlist as available */
323	CvPADLIST(cv) = padlist;	309	CvDEPTH (cv) = PTR2IV (POPs);
324	}	310	CvPADLIST (cv) = (AV *)POPs;
325
326	++CvDEPTH(cv);
327	}	311	}
328		312
329	PUTBACK;	313	PUTBACK;
330	}	314	}
331	}	315	}
332		316
333	static void	317	static void
334	save_state(pTHX_ Coro__State c, int flags)	318	save_state(Coro__State c, int flags)
335	{	319	{
336	{	320	{
337	dSP;	321	dSP;
338	I32 cxix = cxstack_ix;	322	I32 cxix = cxstack_ix;
339	PERL_CONTEXT *ccstk = cxstack;	323	PERL_CONTEXT *ccstk = cxstack;
…		…
353	PERL_CONTEXT *cx = &ccstk[cxix--];	337	PERL_CONTEXT *cx = &ccstk[cxix--];
354		338
355	if (CxTYPE(cx) == CXt_SUB)	339	if (CxTYPE(cx) == CXt_SUB)
356	{	340	{
357	CV *cv = cx->blk_sub.cv;	341	CV *cv = cx->blk_sub.cv;
		342
358	if (CvDEPTH(cv))	343	if (CvDEPTH (cv))
359	{	344	{
360	EXTEND (SP, CvDEPTH(cv)*2);	345	EXTEND (SP, 3);
361
362	while (--CvDEPTH(cv))
363	{
364	/* this tells the restore code to increment CvDEPTH */
365	PUSHs (Nullsv);
366	PUSHs ((SV *)cv);
367	}
368		346
369	PUSHs ((SV *)CvPADLIST(cv));	347	PUSHs ((SV *)CvPADLIST(cv));
		348	PUSHs (INT2PTR (SV *, CvDEPTH (cv)));
370	PUSHs ((SV *)cv);	349	PUSHs ((SV *)cv);
371		350
		351	CvDEPTH (cv) = 0;
372	get_padlist (aTHX_ cv);	352	get_padlist (cv);
373	}	353	}
374	}	354	}
375	#ifdef CXt_FORMAT	355	#ifdef CXt_FORMAT
376	else if (CxTYPE(cx) == CXt_FORMAT)	356	else if (CxTYPE(cx) == CXt_FORMAT)
377	{	357	{
…		…
395		375
396	c->defav = flags & TRANSFER_SAVE_DEFAV ? (AV *)SvREFCNT_inc (GvAV (PL_defgv)) : 0;	376	c->defav = flags & TRANSFER_SAVE_DEFAV ? (AV *)SvREFCNT_inc (GvAV (PL_defgv)) : 0;
397	c->defsv = flags & TRANSFER_SAVE_DEFSV ? SvREFCNT_inc (DEFSV) : 0;	377	c->defsv = flags & TRANSFER_SAVE_DEFSV ? SvREFCNT_inc (DEFSV) : 0;
398	c->errsv = flags & TRANSFER_SAVE_ERRSV ? SvREFCNT_inc (ERRSV) : 0;	378	c->errsv = flags & TRANSFER_SAVE_ERRSV ? SvREFCNT_inc (ERRSV) : 0;
399		379
400	c->dowarn = PL_dowarn;	380	#define VAR(name,type)c->name = PL_ ## name;
401	c->in_eval = PL_in_eval;	381	# include "state.h"
402		382	#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	}	383	}
435		384
436	/*	385	/*
437	* allocate various perl stacks. This is an exact copy	386	* allocate various perl stacks. This is an exact copy
438	* of perl.c:init_stacks, except that it uses less memory	387	* of perl.c:init_stacks, except that it uses less memory
439	* on the (sometimes correct) assumption that coroutines do	388	* on the (sometimes correct) assumption that coroutines do
440	* not usually need a lot of stackspace.	389	* not usually need a lot of stackspace.
441	*/	390	*/
442	static void	391	static void
443	coro_init_stacks (pTHX)	392	coro_init_stacks ()
444	{	393	{
445	LOCK;
446
447	PL_curstackinfo = new_stackinfo(96, 1024/sizeof(PERL_CONTEXT) - 1);	394	PL_curstackinfo = new_stackinfo(128, 1024/sizeof(PERL_CONTEXT));
448	PL_curstackinfo->si_type = PERLSI_MAIN;	395	PL_curstackinfo->si_type = PERLSI_MAIN;
449	PL_curstack = PL_curstackinfo->si_stack;	396	PL_curstack = PL_curstackinfo->si_stack;
450	PL_mainstack = PL_curstack; /* remember in case we switch stacks */	397	PL_mainstack = PL_curstack; /* remember in case we switch stacks */
451		398
452	PL_stack_base = AvARRAY(PL_curstack);	399	PL_stack_base = AvARRAY(PL_curstack);
453	PL_stack_sp = PL_stack_base;	400	PL_stack_sp = PL_stack_base;
454	PL_stack_max = PL_stack_base + AvMAX(PL_curstack);	401	PL_stack_max = PL_stack_base + AvMAX(PL_curstack);
455		402
456	New(50,PL_tmps_stack,96,SV*);	403	New(50,PL_tmps_stack,128,SV*);
457	PL_tmps_floor = -1;	404	PL_tmps_floor = -1;
458	PL_tmps_ix = -1;	405	PL_tmps_ix = -1;
459	PL_tmps_max = 96;	406	PL_tmps_max = 128;
460		407
461	New(54,PL_markstack,16,I32);	408	New(54,PL_markstack,32,I32);
462	PL_markstack_ptr = PL_markstack;	409	PL_markstack_ptr = PL_markstack;
463	PL_markstack_max = PL_markstack + 16;	410	PL_markstack_max = PL_markstack + 32;
464		411
465	#ifdef SET_MARK_OFFSET	412	#ifdef SET_MARK_OFFSET
466	SET_MARK_OFFSET;	413	SET_MARK_OFFSET;
467	#endif	414	#endif
468		415
469	New(54,PL_scopestack,16,I32);	416	New(54,PL_scopestack,32,I32);
470	PL_scopestack_ix = 0;	417	PL_scopestack_ix = 0;
471	PL_scopestack_max = 16;	418	PL_scopestack_max = 32;
472		419
473	New(54,PL_savestack,96,ANY);	420	New(54,PL_savestack,64,ANY);
474	PL_savestack_ix = 0;	421	PL_savestack_ix = 0;
475	PL_savestack_max = 96;	422	PL_savestack_max = 64;
476		423
477	#if PERL_VERSION < 9	424	#if !PERL_VERSION_ATLEAST (5,9,0)
478	New(54,PL_retstack,8,OP*);	425	New(54,PL_retstack,16,OP*);
479	PL_retstack_ix = 0;	426	PL_retstack_ix = 0;
480	PL_retstack_max = 8;	427	PL_retstack_max = 16;
481	#endif	428	#endif
482
483	UNLOCK;
484	}	429	}
485		430
486	/*	431	/*
487	* destroy the stacks, the callchain etc...	432	* destroy the stacks, the callchain etc...
488	*/	433	*/
489	static void	434	static void
490	destroy_stacks(pTHX)	435	coro_destroy_stacks ()
491	{	436	{
492	if (!IN_DESTRUCT)	437	if (!IN_DESTRUCT)
493	{	438	{
494	/* is this ugly, I ask? */	439	/* is this ugly, I ask? */
495	LEAVE_SCOPE (0);	440	LEAVE_SCOPE (0);
…		…
526		471
527	Safefree (PL_tmps_stack);	472	Safefree (PL_tmps_stack);
528	Safefree (PL_markstack);	473	Safefree (PL_markstack);
529	Safefree (PL_scopestack);	474	Safefree (PL_scopestack);
530	Safefree (PL_savestack);	475	Safefree (PL_savestack);
531	#if PERL_VERSION < 9	476	#if !PERL_VERSION_ATLEAST (5,9,0)
532	Safefree (PL_retstack);	477	Safefree (PL_retstack);
533	#endif	478	#endif
534	}	479	}
535		480
536	static void	481	static void
537	setup_coro (struct coro *coro)	482	setup_coro (struct coro *coro)
538	{	483	{
539	/*	484	/*
540	* emulate part of the perl startup here.	485	* emulate part of the perl startup here.
541	*/	486	*/
542	dTHX;
543	dSP;
544	UNOP myop;
545	SV sub_init = (SV )get_cv (SUB_INIT, FALSE);
546		487
547	coro_init_stacks (aTHX);	488	coro_init_stacks ();
		489
548	/PL_curcop = 0;/	490	PL_curcop = 0;
549	/PL_in_eval = PL_in_eval;/ /* inherit */	491	PL_in_eval = 0;
		492	PL_curpm = 0;
		493
		494	{
		495	dSP;
		496	LOGOP myop;
		497
		498	/* I have no idea why this is needed, but it is */
		499	PUSHMARK (SP);
		500
550	SvREFCNT_dec (GvAV (PL_defgv));	501	SvREFCNT_dec (GvAV (PL_defgv));
551	GvAV (PL_defgv) = coro->args; coro->args = 0;	502	GvAV (PL_defgv) = coro->args; coro->args = 0;
552		503
553	SPAGAIN;
554
555	Zero (&myop, 1, UNOP);	504	Zero (&myop, 1, LOGOP);
556	myop.op_next = Nullop;	505	myop.op_next = Nullop;
557	myop.op_flags = OPf_WANT_VOID;	506	myop.op_flags = OPf_WANT_VOID;
558		507
559	PL_op = (OP *)&myop;	508	PL_op = (OP *)&myop;
560		509
561	PUSHMARK(SP);	510	PUSHMARK (SP);
562	XPUSHs (sub_init);	511	XPUSHs ((SV *)get_cv ("Coro::State::_coro_init", FALSE));
563	PUTBACK;	512	PUTBACK;
564	PL_op = PL_ppaddr[OP_ENTERSUB](aTHX);	513	PL_op = PL_ppaddr[OP_ENTERSUB](aTHX);
565	SPAGAIN;	514	SPAGAIN;
566		515
567	ENTER; /* necessary e.g. for dounwind */	516	ENTER; /* necessary e.g. for dounwind */
		517	}
568	}	518	}
569		519
570	static void	520	static void
571	transfer_tail ()	521	free_coro_mortal ()
572	{	522	{
573	if (coro_mortal)	523	if (coro_mortal)
574	{	524	{
575	SvREFCNT_dec (coro_mortal);	525	SvREFCNT_dec (coro_mortal);
576	coro_mortal = 0;	526	coro_mortal = 0;
577	}	527	}
		528	}
578		529
		530	static void NOINLINE
		531	prepare_cctx (coro_cctx *cctx)
		532	{
		533	dSP;
		534	LOGOP myop;
		535
		536	Zero (&myop, 1, LOGOP);
		537	myop.op_next = PL_op;
		538	myop.op_flags = OPf_WANT_VOID;
		539
		540	sv_setiv (get_sv ("Coro::State::_cctx", FALSE), PTR2IV (cctx));
		541
		542	PUSHMARK (SP);
		543	XPUSHs ((SV *)get_cv ("Coro::State::_cctx_init", FALSE));
		544	PUTBACK;
		545	PL_restartop = PL_ppaddr[OP_ENTERSUB](aTHX);
		546	SPAGAIN;
		547	}
		548
		549	static void
		550	coro_run (void *arg)
		551	{
		552	/* coro_run is the alternative epilogue of transfer() */
579	UNLOCK;	553	UNLOCK;
580	}
581		554
582	static void
583	coro_run (void *arg)
584	{
585	/*	555	/*
586	* this is a _very_ stripped down perl interpreter ;)	556	* this is a _very_ stripped down perl interpreter ;)
587	*/	557	*/
588	dTHX;
589
590	transfer_tail ();
591
592	PL_top_env = &PL_start_env;	558	PL_top_env = &PL_start_env;
593	PL_restartop = PL_op->op_next;	559
		560	/* inject call to cctx_init */
		561	prepare_cctx ((coro_cctx *)arg);
		562
594	/* somebody will hit me for both perl_run and PL_restart_top */	563	/* somebody will hit me for both perl_run and PL_restartop */
595	perl_run (aTHX_ PERL_GET_CONTEXT);	564	perl_run (PL_curinterp);
596		565
		566	fputs ("FATAL: C coroutine fell over the edge of the world, aborting. Did you call exit in a coroutine?\n", stderr);
597	abort ();	567	abort ();
598	}	568	}
599		569
600	static coro_stack *	570	static coro_cctx *
601	stack_new ()	571	cctx_new ()
602	{	572	{
603	coro_stack *stack;	573	coro_cctx *cctx;
604		574
		575	++cctx_count;
		576
605	New (0, stack, 1, coro_stack);	577	New (0, cctx, 1, coro_cctx);
606		578
607	#if HAVE_MMAP	579	#if HAVE_MMAP
608		580
609	stack->ssize = ((STACKSIZE * sizeof (long) + PAGESIZE - 1) / PAGESIZE + STACKGUARD) * PAGESIZE; /* mmap should do allocate-on-write for us */	581	cctx->ssize = ((STACKSIZE * sizeof (long) + PAGESIZE - 1) / PAGESIZE + STACKGUARD) * PAGESIZE;
		582	/* 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);	583	cctx->sptr = mmap (0, cctx->ssize, PROT_EXEC\|PROT_READ\|PROT_WRITE, MAP_PRIVATE\|MAP_ANONYMOUS, 0, 0);
611		584
612	if (stack->sptr == (void *)-1)	585	if (cctx->sptr == (void *)-1)
613	{	586	{
614	fprintf (stderr, "FATAL: unable to mmap stack for coroutine\n");	587	perror ("FATAL: unable to mmap stack for coroutine");
615	_exit (EXIT_FAILURE);	588	_exit (EXIT_FAILURE);
616	}	589	}
617		590
		591	# if STACKGUARD
618	mprotect (stack->sptr, STACKGUARD * PAGESIZE, PROT_NONE);	592	mprotect (cctx->sptr, STACKGUARD * PAGESIZE, PROT_NONE);
		593	# endif
619		594
620	#else	595	#else
621		596
622	stack->ssize = STACKSIZE * (long)sizeof (long);	597	cctx->ssize = STACKSIZE * (long)sizeof (long);
623	New (0, stack->sptr, STACKSIZE, long);	598	New (0, cctx->sptr, STACKSIZE, long);
624		599
625	if (!stack->sptr)	600	if (!cctx->sptr)
626	{	601	{
627	fprintf (stderr, "FATAL: unable to malloc stack for coroutine\n");	602	perror ("FATAL: unable to malloc stack for coroutine");
628	_exit (EXIT_FAILURE);	603	_exit (EXIT_FAILURE);
629	}	604	}
630		605
631	#endif	606	#endif
632		607
		608	#if USE_VALGRIND
		609	cctx->valgrind_id = VALGRIND_STACK_REGISTER (
		610	STACKGUARD * PAGESIZE + (char *)cctx->sptr,
		611	cctx->ssize + (char *)cctx->sptr
		612	);
		613	#endif
		614
633	coro_create (&stack->cctx, coro_run, 0, stack->sptr, stack->ssize);	615	coro_create (&cctx->cctx, coro_run, (void *)cctx, cctx->sptr, cctx->ssize);
634		616
635	return stack;	617	return cctx;
636	}	618	}
637		619
638	static void	620	static void
639	stack_free (coro_stack *stack)	621	cctx_destroy (coro_cctx *cctx)
640	{	622	{
641	if (!stack \|\| stack == main_stack)	623	if (!cctx)
642	return;	624	return;
643		625
		626	--cctx_count;
		627
		628	#if USE_VALGRIND
		629	VALGRIND_STACK_DEREGISTER (cctx->valgrind_id);
		630	#endif
		631
644	#if HAVE_MMAP	632	#if HAVE_MMAP
645	munmap (stack->sptr, stack->ssize);	633	munmap (cctx->sptr, cctx->ssize);
646	#else	634	#else
647	Safefree (stack->sptr);	635	Safefree (cctx->sptr);
648	#endif	636	#endif
649		637
650	Safefree (stack);	638	Safefree (cctx);
651	}	639	}
652		640
653	static coro_stack *stack_first;	641	static coro_cctx *
654		642	cctx_get ()
655	static void
656	stack_get (struct coro *coro)
657	{	643	{
		644	coro_cctx *cctx;
		645
658	if (stack_first)	646	if (cctx_first)
659	{	647	{
660	coro->stack = stack_first;	648	cctx = cctx_first;
661	stack_first = stack_first->next;	649	cctx_first = cctx->next;
		650	--cctx_idle;
662	}	651	}
663	else	652	else
664	coro->stack = stack_new ();	653	{
665	}	654	cctx = cctx_new ();
		655	PL_op = PL_op->op_next;
		656	}
666		657
		658	return cctx;
		659	}
		660
667	static void	661	static void
668	stack_put (coro_stack *stack)	662	cctx_put (coro_cctx *cctx)
669	{	663	{
670	stack->next = stack_first;	664	/* free another cctx if overlimit */
671	stack_first = stack;	665	if (cctx_idle >= MAX_IDLE_CCTX)
		666	{
		667	coro_cctx *first = cctx_first;
		668	cctx_first = first->next;
		669	--cctx_idle;
		670
		671	assert (!first->inuse);
		672	cctx_destroy (first);
		673	}
		674
		675	++cctx_idle;
		676	cctx->next = cctx_first;
		677	cctx_first = cctx;
672	}	678	}
673		679
674	/* never call directly, always through the coro_state_transfer global variable */	680	/* never call directly, always through the coro_state_transfer global variable */
675	static void	681	static void NOINLINE
676	transfer_impl (pTHX_ struct coro prev, struct coro next, int flags)	682	transfer (struct coro prev, struct coro next, int flags)
677	{	683	{
678	dSTACKLEVEL;	684	dSTACKLEVEL;
679		685
680	/* sometimes transfer is only called to set idle_sp */	686	/* sometimes transfer is only called to set idle_sp */
681	if (!prev->stack->idle_sp)	687	if (flags == TRANSFER_SET_STACKLEVEL)
682	prev->stack->idle_sp = stacklevel;	688	((coro_cctx *)prev)->idle_sp = STACKLEVEL;
683
684	LOCK;
685
686	if (prev != next)	689	else if (prev != next)
687	{	690	{
688	coro_stack *prev_stack = prev->stack;	691	coro_cctx *prev__cctx;
689		692
690	/* possibly "free" the stack */	693	if (!prev->cctx)
691	if (prev_stack->idle_sp == stacklevel)
692	{	694	{
693	stack_put (prev_stack);	695	/* create a new empty context */
694	prev->stack = 0;	696	Newz (0, prev->cctx, 1, coro_cctx);
		697	prev->cctx->inuse = 1;
		698	prev->flags \|= CF_RUNNING;
695	}	699	}
		700
		701	if (!prev->flags & CF_RUNNING)
		702	croak ("Coro::State::transfer called with non-running prev Coro::State, but can only transfer from running states");
		703
		704	if (next->flags & CF_RUNNING)
		705	croak ("Coro::State::transfer called with running next Coro::State, but can only transfer to inactive states");
		706
		707	prev->flags &= ~CF_RUNNING;
		708	next->flags \|= CF_RUNNING;
		709
		710	LOCK;
696		711
697	if (next->mainstack)	712	if (next->mainstack)
698	{	713	{
699	/* coroutine already started */	714	/* coroutine already started */
700	SAVE (prev, flags);	715	SAVE (prev, flags);
…		…
705	/* need to start coroutine */	720	/* need to start coroutine */
706	/* first get rid of the old state */	721	/* first get rid of the old state */
707	SAVE (prev, -1);	722	SAVE (prev, -1);
708	/* setup coroutine call */	723	/* setup coroutine call */
709	setup_coro (next);	724	setup_coro (next);
710	/* need to change stack from main_stack to real one */	725	/* need a new stack */
711	next->stack = 0;	726	assert (!next->stack);
712	}	727	}
713		728
		729	prev__cctx = prev->cctx;
		730
		731	/* possibly "free" the cctx */
		732	if (prev__cctx->idle_sp == STACKLEVEL)
		733	{
		734	/* I assume that STACKLEVEL is a stronger indicator than PL_top_env changes */
		735	assert (PL_top_env == prev__cctx->top_env);
		736
		737	cctx_put (prev__cctx);
		738	prev->cctx = 0;
		739	}
		740
714	if (!next->stack)	741	if (!next->cctx)
715	stack_get (next);	742	next->cctx = cctx_get ();
716		743
717	if (prev_stack != next->stack)	744	if (prev__cctx != next->cctx)
		745	{
		746	assert ( prev__cctx->inuse);
		747	assert (!next->cctx->inuse);
		748
		749	prev__cctx->inuse = 0;
		750	next->cctx->inuse = 1;
		751
		752	prev__cctx->top_env = PL_top_env;
		753	PL_top_env = next->cctx->top_env;
718	coro_transfer (&prev_stack->cctx, &next->stack->cctx);	754	coro_transfer (&prev__cctx->cctx, &next->cctx->cctx);
		755	}
		756
		757	free_coro_mortal ();
		758
		759	UNLOCK;
719	}	760	}
720
721	transfer_tail ();
722	}	761	}
723		762
724	/* use this function pointer to call the above function */	763	struct transfer_args
725	/* this is done to increase chances of the compiler not inlining the call */	764	{
726	void (coro_state_transfer)(pTHX_ struct coro prev, struct coro *next, int flags) = transfer_impl;	765	struct coro prev, next;
		766	int flags;
		767	};
		768
		769	#define TRANSFER(ta) transfer ((ta).prev, (ta).next, (ta).flags)
727		770
728	static void	771	static void
729	coro_state_destroy (struct coro *coro)	772	coro_state_destroy (struct coro *coro)
730	{	773	{
731	if (coro->refcnt--)	774	if (coro->refcnt--)
732	return;	775	return;
		776
		777	if (coro->flags & CF_RUNNING)
		778	croak ("FATAL: tried to destroy currently running coroutine");
733		779
734	if (coro->mainstack && coro->mainstack != main_mainstack)	780	if (coro->mainstack && coro->mainstack != main_mainstack)
735	{	781	{
736	struct coro temp;	782	struct coro temp;
737		783
738	SAVE (aTHX_ (&temp), TRANSFER_SAVE_ALL);	784	SAVE ((&temp), TRANSFER_SAVE_ALL);
739	LOAD (aTHX_ coro);	785	LOAD (coro);
740		786
741	destroy_stacks (aTHX);	787	coro_destroy_stacks ();
742		788
743	LOAD ((&temp)); /* this will get rid of defsv etc.. */	789	LOAD ((&temp)); /* this will get rid of defsv etc.. */
744		790
745	coro->mainstack = 0;	791	coro->mainstack = 0;
746	}	792	}
747		793
748	stack_free (coro->stack);	794	cctx_destroy (coro->cctx);
749	SvREFCNT_dec (coro->args);	795	SvREFCNT_dec (coro->args);
750	Safefree (coro);	796	Safefree (coro);
751	}	797	}
752		798
753	static int	799	static int
754	coro_state_clear (SV sv, MAGIC mg)	800	coro_state_clear (pTHX_ SV sv, MAGIC mg)
755	{	801	{
756	struct coro coro = (struct coro )mg->mg_ptr;	802	struct coro coro = (struct coro )mg->mg_ptr;
757	mg->mg_ptr = 0;	803	mg->mg_ptr = 0;
758		804
759	coro_state_destroy (coro);	805	coro_state_destroy (coro);
760		806
761	return 0;	807	return 0;
762	}	808	}
763		809
764	static int	810	static int
765	coro_state_dup (MAGIC mg, CLONE_PARAMS params)	811	coro_state_dup (pTHX_ MAGIC mg, CLONE_PARAMS params)
766	{	812	{
767	struct coro coro = (struct coro )mg->mg_ptr;	813	struct coro coro = (struct coro )mg->mg_ptr;
768		814
769	++coro->refcnt;	815	++coro->refcnt;
770		816
771	return 0;	817	return 0;
772	}	818	}
773		819
774	static MGVTBL coro_state_vtbl = { 0, 0, 0, 0, coro_state_clear, 0, coro_state_dup, 0 };	820	static MGVTBL coro_state_vtbl = {
		821	0, 0, 0, 0,
		822	coro_state_clear,
		823	0,
		824	#ifdef MGf_DUP
		825	coro_state_dup,
		826	#else
		827	# define MGf_DUP 0
		828	#endif
		829	};
775		830
776	static struct coro *	831	static struct coro *
777	SvSTATE (SV *coro)	832	SvSTATE (SV *coro)
778	{	833	{
779	HV *stash;	834	HV *stash;
…		…
794	assert (mg->mg_type == PERL_MAGIC_ext);	849	assert (mg->mg_type == PERL_MAGIC_ext);
795	return (struct coro *)mg->mg_ptr;	850	return (struct coro *)mg->mg_ptr;
796	}	851	}
797		852
798	static void	853	static void
		854	prepare_transfer (struct transfer_args ta, SV prev, SV *next, int flags)
		855	{
		856	ta->prev = SvSTATE (prev);
		857	ta->next = SvSTATE (next);
		858	ta->flags = flags;
		859	}
		860
		861	static void
799	api_transfer (pTHX_ SV prev, SV next, int flags)	862	api_transfer (SV prev, SV next, int flags)
800	{	863	{
801	coro_state_transfer (aTHX_ SvSTATE (prev), SvSTATE (next), flags);	864	dTHX;
		865	struct transfer_args ta;
		866
		867	prepare_transfer (&ta, prev, next, flags);
		868	TRANSFER (ta);
802	}	869	}
803		870
804	/ Coro ******************************************************************/	871	/ Coro ******************************************************************/
805		872
806	#define PRIO_MAX 3	873	#define PRIO_MAX 3
…		…
814	static GV coro_current, coro_idle;	881	static GV coro_current, coro_idle;
815	static AV *coro_ready [PRIO_MAX-PRIO_MIN+1];	882	static AV *coro_ready [PRIO_MAX-PRIO_MIN+1];
816	static int coro_nready;	883	static int coro_nready;
817		884
818	static void	885	static void
819	coro_enq (pTHX_ SV *sv)	886	coro_enq (SV *coro_sv)
820	{	887	{
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);	888	av_push (coro_ready [SvSTATE (coro_sv)->prio - PRIO_MIN], coro_sv);
829	coro_nready++;	889	coro_nready++;
830	}	890	}
831		891
832	static SV *	892	static SV *
833	coro_deq (pTHX_ int min_prio)	893	coro_deq (int min_prio)
834	{	894	{
835	int prio = PRIO_MAX - PRIO_MIN;	895	int prio = PRIO_MAX - PRIO_MIN;
836		896
837	min_prio -= PRIO_MIN;	897	min_prio -= PRIO_MIN;
838	if (min_prio < 0)	898	if (min_prio < 0)
…		…
846	}	906	}
847		907
848	return 0;	908	return 0;
849	}	909	}
850		910
851	static void	911	static int
852	api_ready (SV *coro)	912	api_ready (SV *coro_sv)
853	{	913	{
854	dTHX;	914	struct coro *coro;
855		915
856	if (SvROK (coro))	916	if (SvROK (coro_sv))
857	coro = SvRV (coro);	917	coro_sv = SvRV (coro_sv);
		918
		919	coro = SvSTATE (coro_sv);
		920
		921	if (coro->flags & CF_READY)
		922	return 0;
		923
		924	if (coro->flags & CF_RUNNING)
		925	croak ("Coro::ready called on currently running coroutine");
		926
		927	coro->flags \|= CF_READY;
858		928
859	LOCK;	929	LOCK;
860	coro_enq (aTHX_ SvREFCNT_inc (coro));	930	coro_enq (SvREFCNT_inc (coro_sv));
861	UNLOCK;	931	UNLOCK;
862	}
863		932
		933	return 1;
		934	}
		935
864	static void	936	static int
865	api_schedule (void)	937	api_is_ready (SV *coro_sv)
866	{	938	{
867	dTHX;	939	return !!SvSTATE (coro_sv)->flags & CF_READY;
		940	}
868		941
		942	static void
		943	prepare_schedule (struct transfer_args *ta)
		944	{
869	SV prev, next;	945	SV current, prev, *next;
		946
870	SV *current = GvSV (coro_current);	947	current = GvSV (coro_current);
871		948
872	for (;;)	949	for (;;)
873	{	950	{
874	LOCK;	951	LOCK;
875
876	next = coro_deq (aTHX_ PRIO_MIN);	952	next = coro_deq (PRIO_MIN);
		953	UNLOCK;
877		954
878	if (next)	955	if (next)
879	break;	956	break;
880
881	UNLOCK;
882		957
883	{	958	{
884	dSP;	959	dSP;
885		960
886	ENTER;	961	ENTER;
…		…
897		972
898	prev = SvRV (current);	973	prev = SvRV (current);
899	SvRV (current) = next;	974	SvRV (current) = next;
900		975
901	/* free this only after the transfer */	976	/* free this only after the transfer */
		977	LOCK;
		978	free_coro_mortal ();
		979	UNLOCK;
902	coro_mortal = prev;	980	coro_mortal = prev;
903		981
904	UNLOCK;	982	ta->prev = SvSTATE (prev);
		983	ta->next = SvSTATE (next);
		984	ta->flags = TRANSFER_SAVE_ALL;
905		985
906	coro_state_transfer (aTHX_ SvSTATE (prev), SvSTATE (next), TRANSFER_SAVE_ALL);	986	ta->next->flags &= ~CF_READY;
907	}	987	}
908		988
909	static int coro_cede_self;	989	static void
		990	prepare_cede (struct transfer_args *ta)
		991	{
		992	api_ready (GvSV (coro_current));
		993
		994	prepare_schedule (ta);
		995	}
		996
		997	static void
		998	api_schedule (void)
		999	{
		1000	dTHX;
		1001	struct transfer_args ta;
		1002
		1003	prepare_schedule (&ta);
		1004	TRANSFER (ta);
		1005	}
910		1006
911	static void	1007	static void
912	api_cede (void)	1008	api_cede (void)
913	{	1009	{
914	dTHX;	1010	dTHX;
915	SV *current = SvREFCNT_inc (SvRV (GvSV (coro_current)));	1011	struct transfer_args ta;
916		1012
917	LOCK;	1013	prepare_cede (&ta);
918		1014	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	}	1015	}
934		1016
935	MODULE = Coro::State PACKAGE = Coro::State	1017	MODULE = Coro::State PACKAGE = Coro::State
936		1018
937	PROTOTYPES: DISABLE	1019	PROTOTYPES: DISABLE
…		…
952	main_mainstack = PL_mainstack;	1034	main_mainstack = PL_mainstack;
953		1035
954	coroapi.ver = CORO_API_VERSION;	1036	coroapi.ver = CORO_API_VERSION;
955	coroapi.transfer = api_transfer;	1037	coroapi.transfer = api_transfer;
956		1038
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));	1039	assert (("PRIO_NORMAL must be 0", !PRIO_NORMAL));
961	}	1040	}
962		1041
963	SV *	1042	SV *
964	new (char *klass, ...)	1043	new (char *klass, ...)
…		…
973		1052
974	hv = newHV ();	1053	hv = newHV ();
975	sv_magicext ((SV )hv, 0, PERL_MAGIC_ext, &coro_state_vtbl, (char )coro, 0)->mg_flags \|= MGf_DUP;	1054	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));	1055	RETVAL = sv_bless (newRV_noinc ((SV *)hv), gv_stashpv (klass, 1));
977		1056
978	av_push (coro->args, newSVsv (RETVAL));
979	for (i = 1; i < items; i++)	1057	for (i = 1; i < items; i++)
980	av_push (coro->args, newSVsv (ST (i)));	1058	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	}	1059	}
986	OUTPUT:	1060	OUTPUT:
987	RETVAL	1061	RETVAL
988		1062
989	void	1063	void
990	transfer (prev, next, flags)	1064	_set_stacklevel (...)
991	SV *prev	1065	ALIAS:
992	SV *next	1066	Coro::State::transfer = 1
993	int flags	1067	Coro::schedule = 2
		1068	Coro::cede = 3
		1069	Coro::Cont::yield = 4
994	CODE:	1070	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	{	1071	{
1005	RETVAL = coro->prio;	1072	struct transfer_args ta;
1006		1073
1007	if (items > 1)	1074	switch (ix)
1008	{	1075	{
		1076	case 0:
		1077	ta.prev = (struct coro )INT2PTR (coro_cctx , SvIV (ST (0)));
		1078	ta.next = 0;
		1079	ta.flags = TRANSFER_SET_STACKLEVEL;
		1080	break;
		1081
		1082	case 1:
1009	if (ix)	1083	if (items != 3)
1010	newprio += coro->prio;	1084	croak ("Coro::State::transfer(prev,next,flags) expects three arguments, not %d", items);
1011		1085
1012	if (newprio < PRIO_MIN) newprio = PRIO_MIN;	1086	prepare_transfer (&ta, ST (0), ST (1), SvIV (ST (2)));
1013	if (newprio > PRIO_MAX) newprio = PRIO_MAX;	1087	break;
1014		1088
1015	coro->prio = newprio;	1089	case 2:
		1090	prepare_schedule (&ta);
		1091	break;
		1092
		1093	case 3:
		1094	prepare_cede (&ta);
		1095	break;
		1096
		1097	case 4:
		1098	{
		1099	SV *yieldstack;
		1100	SV *sv;
		1101	AV *defav = GvAV (PL_defgv);
		1102
		1103	yieldstack = *hv_fetch (
		1104	(HV *)SvRV (GvSV (coro_current)),
		1105	"yieldstack", sizeof ("yieldstack") - 1,
		1106	0
		1107	);
		1108
		1109	/* set up @_ -- ugly */
		1110	av_clear (defav);
		1111	av_fill (defav, items - 1);
		1112	while (items--)
		1113	av_store (defav, items, SvREFCNT_inc (ST(items)));
		1114
		1115	sv = av_pop ((AV *)SvRV (yieldstack));
		1116	ta.prev = SvSTATE (av_fetch ((AV )SvRV (sv), 0, 0));
		1117	ta.next = SvSTATE (av_fetch ((AV )SvRV (sv), 1, 0));
		1118	ta.flags = 0;
		1119	SvREFCNT_dec (sv);
		1120	}
		1121	break;
		1122
1016	}	1123	}
1017	}
1018		1124
1019	void	1125	TRANSFER (ta);
1020	_clear_idle_sp (Coro::State self)	1126	}
1021	CODE:
1022	self->stack->idle_sp = 0;
1023		1127
1024	void	1128	void
1025	_clone_state_from (SV dst, SV src)	1129	_clone_state_from (SV dst, SV src)
1026	CODE:	1130	CODE:
1027	{	1131	{
…		…
1038	int code	1142	int code
1039	PROTOTYPE: $	1143	PROTOTYPE: $
1040	CODE:	1144	CODE:
1041	_exit (code);	1145	_exit (code);
1042		1146
1043	MODULE = Coro::State PACKAGE = Coro::Cont	1147	int
		1148	cctx_count ()
		1149	CODE:
		1150	RETVAL = cctx_count;
		1151	OUTPUT:
		1152	RETVAL
1044		1153
1045	void	1154	int
1046	yield (...)	1155	cctx_idle ()
1047	PROTOTYPE: @	1156	CODE:
1048	CODE:	1157	RETVAL = cctx_idle;
1049	{	1158	OUTPUT:
1050	SV *yieldstack;	1159	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		1160
1075	MODULE = Coro::State PACKAGE = Coro	1161	MODULE = Coro::State PACKAGE = Coro
1076		1162
1077	BOOT:	1163	BOOT:
1078	{	1164	{
…		…
1097	SV *sv = perl_get_sv("Coro::API", 1);	1183	SV *sv = perl_get_sv("Coro::API", 1);
1098		1184
1099	coroapi.schedule = api_schedule;	1185	coroapi.schedule = api_schedule;
1100	coroapi.cede = api_cede;	1186	coroapi.cede = api_cede;
1101	coroapi.ready = api_ready;	1187	coroapi.ready = api_ready;
		1188	coroapi.is_ready = api_is_ready;
1102	coroapi.nready = &coro_nready;	1189	coroapi.nready = &coro_nready;
1103	coroapi.current = coro_current;	1190	coroapi.current = coro_current;
1104		1191
1105	GCoroAPI = &coroapi;	1192	GCoroAPI = &coroapi;
1106	sv_setiv (sv, (IV)&coroapi);	1193	sv_setiv (sv, (IV)&coroapi);
1107	SvREADONLY_on (sv);	1194	SvREADONLY_on (sv);
1108	}	1195	}
1109	}	1196	}
1110		1197
1111	void	1198	int
		1199	prio (Coro::State coro, int newprio = 0)
		1200	ALIAS:
		1201	nice = 1
		1202	CODE:
		1203	{
		1204	RETVAL = coro->prio;
		1205
		1206	if (items > 1)
		1207	{
		1208	if (ix)
		1209	newprio += coro->prio;
		1210
		1211	if (newprio < PRIO_MIN) newprio = PRIO_MIN;
		1212	if (newprio > PRIO_MAX) newprio = PRIO_MAX;
		1213
		1214	coro->prio = newprio;
		1215	}
		1216	}
		1217
		1218	SV *
1112	ready (SV *self)	1219	ready (SV *self)
1113	PROTOTYPE: $	1220	PROTOTYPE: $
1114	CODE:	1221	CODE:
1115	api_ready (self);	1222	RETVAL = boolSV (api_ready (self));
		1223	OUTPUT:
		1224	RETVAL
		1225
		1226	SV *
		1227	is_ready (SV *self)
		1228	PROTOTYPE: $
		1229	CODE:
		1230	RETVAL = boolSV (api_is_ready (self));
		1231	OUTPUT:
		1232	RETVAL
1116		1233
1117	int	1234	int
1118	nready (...)	1235	nready (...)
1119	PROTOTYPE:	1236	PROTOTYPE:
1120	CODE:	1237	CODE:
1121	RETVAL = coro_nready;	1238	RETVAL = coro_nready;
1122	OUTPUT:	1239	OUTPUT:
1123	RETVAL	1240	RETVAL
1124		1241
1125	void
1126	schedule (...)
1127	PROTOTYPE:
1128	CODE:
1129	api_schedule ();
1130
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
1142	MODULE = Coro::State PACKAGE = Coro::AIO	1242	MODULE = Coro::State PACKAGE = Coro::AIO
1143		1243
1144	SV *	1244	SV *
1145	_get_state ()	1245	_get_state ()
1146	CODE:	1246	CODE:

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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 1.116 by root, Fri Dec 1 14:01:43 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 1.116 by root, Fri Dec 1 14:01:43 2006 UTC