ViewVC Help

View File | Revision Log | Show Annotations | Download File

/cvs/Coro/Coro/State.xs

Comparing Coro/Coro/State.xs (file contents):
Revision 1.87 by root, Fri Nov 24 13:40:36 2006 UTC vs.
Revision 1.110 by root, Tue Nov 28 23:08:07 2006 UTC

1	#define PERL_NO_GET_CONTEXT
2
3	#include "libcoro/coro.c"	1	#include "libcoro/coro.c"
4		2
5	#include "EXTERN.h"	3	#include "EXTERN.h"
6	#include "perl.h"	4	#include "perl.h"
7	#include "XSUB.h"	5	#include "XSUB.h"
8		6
9	#include "patchlevel.h"	7	#include "patchlevel.h"
10		8
11	#if PERL_VERSION < 6	9	#if USE_VALGRIND
		10	# include <valgrind/valgrind.h>
		11	#endif
		12
		13	#define PERL_VERSION_ATLEAST(a,b,c) \
		14	(PERL_REVISION > (a) \
		15	|| (PERL_REVISION == (a) \
		16	&& (PERL_VERSION > (b) \
		17	|| (PERL_VERSION == (b) && PERLSUBVERSION >= (c)))))
		18
		19	#if !PERL_VERSION_ATLEAST (5,6,0)
12	# ifndef PL_ppaddr	20	# ifndef PL_ppaddr
13	# define PL_ppaddr ppaddr	21	# define PL_ppaddr ppaddr
14	# endif	22	# endif
15	# ifndef call_sv	23	# ifndef call_sv
16	# define call_sv perl_call_sv	24	# define call_sv perl_call_sv
…		…
27	# ifndef IS_PADCONST	35	# ifndef IS_PADCONST
28	# define IS_PADCONST(v) 0	36	# define IS_PADCONST(v) 0
29	# endif	37	# endif
30	#endif	38	#endif
31		39
		40	#include <stdio.h>
32	#include <errno.h>	41	#include <errno.h>
33		42
34	#if !__i386 && !__x86_64 && !__powerpc && !__m68k && !__alpha && !__mips && !__sparc64	43	#if !__i386 && !__x86_64 && !__powerpc && !__m68k && !__alpha && !__mips && !__sparc64
35	# undef STACKGUARD	44	# undef STACKGUARD
36	#endif	45	#endif
…		…
53	# ifndef PAGESIZE	62	# ifndef PAGESIZE
54	# define PAGESIZE pagesize	63	# define PAGESIZE pagesize
55	# define BOOT_PAGESIZE pagesize = sysconf (_SC_PAGESIZE)	64	# define BOOT_PAGESIZE pagesize = sysconf (_SC_PAGESIZE)
56	static long pagesize;	65	static long pagesize;
57	# else	66	# else
58	# define BOOT_PAGESIZE	67	# define BOOT_PAGESIZE (void)0
59	# endif	68	# endif
		69	#else
		70	# define PAGESIZE 0
		71	# define BOOT_PAGESIZE (void)0
60	#endif	72	#endif
61
62	#define SUB_INIT "Coro::State::initialize"
63	#define UCORO_STATE "_coro_state"
64		73
65	/* The next macro should declare a variable stacklevel that contains and approximation	74	/* The next macro should declare a variable stacklevel that contains and approximation
66	* to the current C stack pointer. Its property is that it changes with each call	75	* to the current C stack pointer. Its property is that it changes with each call
67	* and should be unique. */	76	* and should be unique. */
		77	#define dSTACKLEVEL int stacklevel
68	#define dSTACKLEVEL void *stacklevel = &stacklevel	78	#define STACKLEVEL ((void *)&stacklevel)
69		79
70	#define IN_DESTRUCT (PL_main_cv == Nullcv)	80	#define IN_DESTRUCT (PL_main_cv == Nullcv)
71		81
72	#define labs(l) ((l) >= 0 ? (l) : -(l))	82	#if __GNUC__ >= 3
		83	# define attribute(x) __attribute__(x)
		84	#else
		85	# define attribute(x)
		86	#endif
		87
		88	#define NOINLINE attribute ((noinline))
73		89
74	#include "CoroAPI.h"	90	#include "CoroAPI.h"
		91
		92	#define TRANSFER_SET_STACKLEVEL 0x8bfbfbfb /* magic cookie */
75		93
76	#ifdef USE_ITHREADS	94	#ifdef USE_ITHREADS
77	static perl_mutex coro_mutex;	95	static perl_mutex coro_mutex;
78	# define LOCK do { MUTEX_LOCK (&coro_mutex); } while (0)	96	# define LOCK do { MUTEX_LOCK (&coro_mutex); } while (0)
79	# define UNLOCK do { MUTEX_UNLOCK (&coro_mutex); } while (0)	97	# define UNLOCK do { MUTEX_UNLOCK (&coro_mutex); } while (0)
…		…
82	# define UNLOCK (void)0	100	# define UNLOCK (void)0
83	#endif	101	#endif
84		102
85	static struct CoroAPI coroapi;	103	static struct CoroAPI coroapi;
86	static AV *main_mainstack; /* used to differentiate between $main and others */	104	static AV *main_mainstack; /* used to differentiate between $main and others */
87	static HV *coro_state_stash;	105	static HV *coro_state_stash, *coro_stash;
88	static SV *ucoro_state_sv;
89	static U32 ucoro_state_hash;
90	static SV *coro_mortal; /* will be freed after next transfer */	106	static SV *coro_mortal; /* will be freed after next transfer */
91		107
92	/* this is actually not only the c stack but also c registers etc... */	108	static struct coro_cctx *cctx_first;
		109	static int cctx_count, cctx_idle;
		110
		111	/* this is a structure representing a c-level coroutine */
93	typedef struct {	112	typedef struct coro_cctx {
94	int refcnt; /* pointer reference counter */	113	struct coro_cctx *next;
95	int usecnt; /* shared by how many coroutines */
96	int gencnt; /* generation counter */
97		114
98	coro_context cctx;	115	/* the stack */
99
100	void *sptr;	116	void *sptr;
101	long ssize; /* positive == mmap, otherwise malloc */	117	long ssize; /* positive == mmap, otherwise malloc */
102	} coro_stack;
103		118
		119	/* cpu state */
		120	void *idle_sp; /* sp of top-level transfer/schedule/cede call */
		121	JMPENV *top_env;
		122	coro_context cctx;
		123
		124	#if USE_VALGRIND
		125	int valgrind_id;
		126	#endif
		127	} coro_cctx;
		128
		129	/* this is a structure representing a perl-level coroutine */
104	struct coro {	130	struct coro {
105	/* the optional C context */	131	/* the c coroutine allocated to this perl coroutine, if any */
106	coro_stack *stack;	132	coro_cctx *cctx;
107	void *cursp;	133
		134	/* data associated with this coroutine (initial args) */
		135	AV *args;
108	int gencnt;	136	int refcnt;
109		137
110	/* optionally saved, might be zero */	138	/* optionally saved, might be zero */
111	AV *defav;	139	AV *defav;
112	SV *defsv;	140	SV *defsv;
113	SV *errsv;	141	SV *errsv;
114		142
115	/* saved global state not related to stacks */	143	#define VAR(name,type) type name;
116	U8 dowarn;	144	# include "state.h"
117	I32 in_eval;	145	#undef VAR
118
119	/* the stacks and related info (callchain etc..) */
120	PERL_SI *curstackinfo;
121	AV *curstack;
122	AV *mainstack;
123	SV **stack_sp;
124	OP *op;
125	SV **curpad;
126	AV *comppad;
127	CV *compcv;
128	SV **stack_base;
129	SV **stack_max;
130	SV **tmps_stack;
131	I32 tmps_floor;
132	I32 tmps_ix;
133	I32 tmps_max;
134	I32 *markstack;
135	I32 *markstack_ptr;
136	I32 *markstack_max;
137	I32 *scopestack;
138	I32 scopestack_ix;
139	I32 scopestack_max;
140	ANY *savestack;
141	I32 savestack_ix;
142	I32 savestack_max;
143	OP **retstack;
144	I32 retstack_ix;
145	I32 retstack_max;
146	PMOP *curpm;
147	COP *curcop;
148	JMPENV *top_env;
149		146
150	/* coro process data */	147	/* coro process data */
151	int prio;	148	int prio;
152
153	/* data associated with this coroutine (initial args) */
154	AV *args;
155	int refcnt;
156	};	149	};
157		150
158	typedef struct coro *Coro__State;	151	typedef struct coro *Coro__State;
159	typedef struct coro *Coro__State_or_hashref;	152	typedef struct coro *Coro__State_or_hashref;
160		153
161	static AV *	154	static AV *
162	coro_clone_padlist (pTHX_ CV *cv)	155	coro_clone_padlist (CV *cv)
163	{	156	{
164	AV *padlist = CvPADLIST (cv);	157	AV *padlist = CvPADLIST (cv);
165	AV *newpadlist, *newpad;	158	AV *newpadlist, *newpad;
166		159
167	newpadlist = newAV ();	160	newpadlist = newAV ();
168	AvREAL_off (newpadlist);	161	AvREAL_off (newpadlist);
169	#if PERL_VERSION < 9	162	#if PERL_VERSION_ATLEAST (5,9,0)
		163	Perl_pad_push (aTHX_ padlist, AvFILLp (padlist) + 1);
		164	#else
170	Perl_pad_push (aTHX_ padlist, AvFILLp (padlist) + 1, 1);	165	Perl_pad_push (aTHX_ padlist, AvFILLp (padlist) + 1, 1);
171	#else
172	Perl_pad_push (aTHX_ padlist, AvFILLp (padlist) + 1);
173	#endif	166	#endif
174	newpad = (AV *)AvARRAY (padlist)[AvFILLp (padlist)];	167	newpad = (AV *)AvARRAY (padlist)[AvFILLp (padlist)];
175	--AvFILLp (padlist);	168	--AvFILLp (padlist);
176		169
177	av_store (newpadlist, 0, SvREFCNT_inc (*av_fetch (padlist, 0, FALSE)));	170	av_store (newpadlist, 0, SvREFCNT_inc (*av_fetch (padlist, 0, FALSE)));
…		…
179		172
180	return newpadlist;	173	return newpadlist;
181	}	174	}
182		175
183	static void	176	static void
184	free_padlist (pTHX_ AV *padlist)	177	free_padlist (AV *padlist)
185	{	178	{
186	/* may be during global destruction */	179	/* may be during global destruction */
187	if (SvREFCNT (padlist))	180	if (SvREFCNT (padlist))
188	{	181	{
189	I32 i = AvFILLp (padlist);	182	I32 i = AvFILLp (padlist);
…		…
210	AV *padlist;	203	AV *padlist;
211	AV *av = (AV *)mg->mg_obj;	204	AV *av = (AV *)mg->mg_obj;
212		205
213	/* casting is fun. */	206	/* casting is fun. */
214	while (&PL_sv_undef != (SV *)(padlist = (AV *)av_pop (av)))	207	while (&PL_sv_undef != (SV *)(padlist = (AV *)av_pop (av)))
215	free_padlist (aTHX_ padlist);	208	free_padlist (padlist);
216		209
217	SvREFCNT_dec (av);	210	SvREFCNT_dec (av);
218		211
219	return 0;	212	return 0;
220	}	213	}
221		214
222	#define PERL_MAGIC_coro PERL_MAGIC_ext	215	#define PERL_MAGIC_coro PERL_MAGIC_ext
223		216
224	static MGVTBL vtbl_coro = {0, 0, 0, 0, coro_cv_free};	217	static MGVTBL vtbl_coro = {0, 0, 0, 0, coro_cv_free};
225		218
		219	#define CORO_MAGIC(cv) \
		220	SvMAGIC (cv) \
		221	? SvMAGIC (cv)->mg_type == PERL_MAGIC_coro \
		222	? SvMAGIC (cv) \
		223	: mg_find ((SV *)cv, PERL_MAGIC_coro) \
		224	: 0
		225
226	/* the next two functions merely cache the padlists */	226	/* the next two functions merely cache the padlists */
227	static void	227	static void
228	get_padlist (pTHX_ CV *cv)	228	get_padlist (CV *cv)
229	{	229	{
230	MAGIC *mg = mg_find ((SV *)cv, PERL_MAGIC_coro);	230	MAGIC *mg = CORO_MAGIC (cv);
		231	AV *av;
231		232
232	if (mg && AvFILLp ((AV *)mg->mg_obj) >= 0)	233	if (mg && AvFILLp ((av = (AV *)mg->mg_obj)) >= 0)
233	CvPADLIST (cv) = (AV *)av_pop ((AV *)mg->mg_obj);	234	CvPADLIST (cv) = (AV *)AvARRAY (av)[AvFILLp (av)--];
234	else	235	else
235	{	236	{
236	#if 0	237	#if 0
237	/* this should work - but it doesn't :( */	238	/* this is probably cleaner, but also slower? */
238	CV *cp = Perl_cv_clone (aTHX_ cv);	239	CV *cp = Perl_cv_clone (cv);
239	CvPADLIST (cv) = CvPADLIST (cp);	240	CvPADLIST (cv) = CvPADLIST (cp);
240	CvPADLIST (cp) = 0;	241	CvPADLIST (cp) = 0;
241	SvREFCNT_dec (cp);	242	SvREFCNT_dec (cp);
242	#else	243	#else
243	CvPADLIST (cv) = coro_clone_padlist (aTHX_ cv);	244	CvPADLIST (cv) = coro_clone_padlist (cv);
244	#endif	245	#endif
245	}	246	}
246	}	247	}
247		248
248	static void	249	static void
249	put_padlist (pTHX_ CV *cv)	250	put_padlist (CV *cv)
250	{	251	{
251	MAGIC *mg = mg_find ((SV *)cv, PERL_MAGIC_coro);	252	MAGIC *mg = CORO_MAGIC (cv);
		253	AV *av;
252		254
253	if (!mg)	255	if (!mg)
254	{	256	{
255	sv_magic ((SV *)cv, 0, PERL_MAGIC_coro, 0, 0);	257	sv_magic ((SV *)cv, 0, PERL_MAGIC_coro, 0, 0);
256	mg = mg_find ((SV *)cv, PERL_MAGIC_coro);	258	mg = mg_find ((SV *)cv, PERL_MAGIC_coro);
257	mg->mg_virtual = &vtbl_coro;	259	mg->mg_virtual = &vtbl_coro;
258	mg->mg_obj = (SV *)newAV ();	260	mg->mg_obj = (SV *)newAV ();
259	}	261	}
260		262
261	av_push ((AV *)mg->mg_obj, (SV *)CvPADLIST (cv));	263	av = (AV *)mg->mg_obj;
		264
		265	if (AvFILLp (av) >= AvMAX (av))
		266	av_extend (av, AvMAX (av) + 1);
		267
		268	AvARRAY (av)[++AvFILLp (av)] = (SV *)CvPADLIST (cv);
262	}	269	}
263		270
264	#define SB do {	271	#define SB do {
265	#define SE } while (0)	272	#define SE } while (0)
266		273
267	#define LOAD(state) load_state(aTHX_ (state));	274	#define LOAD(state) load_state((state));
268	#define SAVE(state,flags) save_state(aTHX_ (state),(flags));	275	#define SAVE(state,flags) save_state((state),(flags));
269		276
270	#define REPLACE_SV(sv,val) SB SvREFCNT_dec(sv); (sv) = (val); (val) = 0; SE	277	#define REPLACE_SV(sv,val) SB SvREFCNT_dec(sv); (sv) = (val); (val) = 0; SE
271		278
272	static void	279	static void
273	load_state(pTHX_ Coro__State c)	280	load_state(Coro__State c)
274	{	281	{
275	PL_dowarn = c->dowarn;	282	#define VAR(name,type) PL_ ## name = c->name;
276	PL_in_eval = c->in_eval;	283	# include "state.h"
277		284	#undef VAR
278	PL_curstackinfo = c->curstackinfo;
279	PL_curstack = c->curstack;
280	PL_mainstack = c->mainstack;
281	PL_stack_sp = c->stack_sp;
282	PL_op = c->op;
283	PL_curpad = c->curpad;
284	PL_comppad = c->comppad;
285	PL_compcv = c->compcv;
286	PL_stack_base = c->stack_base;
287	PL_stack_max = c->stack_max;
288	PL_tmps_stack = c->tmps_stack;
289	PL_tmps_floor = c->tmps_floor;
290	PL_tmps_ix = c->tmps_ix;
291	PL_tmps_max = c->tmps_max;
292	PL_markstack = c->markstack;
293	PL_markstack_ptr = c->markstack_ptr;
294	PL_markstack_max = c->markstack_max;
295	PL_scopestack = c->scopestack;
296	PL_scopestack_ix = c->scopestack_ix;
297	PL_scopestack_max = c->scopestack_max;
298	PL_savestack = c->savestack;
299	PL_savestack_ix = c->savestack_ix;
300	PL_savestack_max = c->savestack_max;
301	#if PERL_VERSION < 9
302	PL_retstack = c->retstack;
303	PL_retstack_ix = c->retstack_ix;
304	PL_retstack_max = c->retstack_max;
305	#endif
306	PL_curpm = c->curpm;
307	PL_curcop = c->curcop;
308	PL_top_env = c->top_env;
309		285
310	if (c->defav) REPLACE_SV (GvAV (PL_defgv), c->defav);	286	if (c->defav) REPLACE_SV (GvAV (PL_defgv), c->defav);
311	if (c->defsv) REPLACE_SV (DEFSV , c->defsv);	287	if (c->defsv) REPLACE_SV (DEFSV , c->defsv);
312	if (c->errsv) REPLACE_SV (ERRSV , c->errsv);	288	if (c->errsv) REPLACE_SV (ERRSV , c->errsv);
313		289
…		…
316	CV *cv;	292	CV *cv;
317		293
318	/* now do the ugly restore mess */	294	/* now do the ugly restore mess */
319	while ((cv = (CV *)POPs))	295	while ((cv = (CV *)POPs))
320	{	296	{
321	AV *padlist = (AV *)POPs;
322
323	if (padlist)
324	{
325	put_padlist (aTHX_ cv); /* mark this padlist as available */	297	put_padlist (cv); /* mark this padlist as available */
326	CvPADLIST(cv) = padlist;	298	CvDEPTH (cv) = PTR2IV (POPs);
327	}	299	CvPADLIST (cv) = (AV *)POPs;
328
329	++CvDEPTH(cv);
330	}	300	}
331		301
332	PUTBACK;	302	PUTBACK;
333	}	303	}
334	}	304	}
335		305
336	static void	306	static void
337	save_state(pTHX_ Coro__State c, int flags)	307	save_state(Coro__State c, int flags)
338	{	308	{
339	{	309	{
340	dSP;	310	dSP;
341	I32 cxix = cxstack_ix;	311	I32 cxix = cxstack_ix;
342	PERL_CONTEXT *ccstk = cxstack;	312	PERL_CONTEXT *ccstk = cxstack;
…		…
356	PERL_CONTEXT *cx = &ccstk[cxix--];	326	PERL_CONTEXT *cx = &ccstk[cxix--];
357		327
358	if (CxTYPE(cx) == CXt_SUB)	328	if (CxTYPE(cx) == CXt_SUB)
359	{	329	{
360	CV *cv = cx->blk_sub.cv;	330	CV *cv = cx->blk_sub.cv;
		331
361	if (CvDEPTH(cv))	332	if (CvDEPTH (cv))
362	{	333	{
363	EXTEND (SP, CvDEPTH(cv)*2);	334	EXTEND (SP, 3);
364
365	while (--CvDEPTH(cv))
366	{
367	/* this tells the restore code to increment CvDEPTH */
368	PUSHs (Nullsv);
369	PUSHs ((SV *)cv);
370	}
371		335
372	PUSHs ((SV *)CvPADLIST(cv));	336	PUSHs ((SV *)CvPADLIST(cv));
		337	PUSHs (INT2PTR (SV *, CvDEPTH (cv)));
373	PUSHs ((SV *)cv);	338	PUSHs ((SV *)cv);
374		339
		340	CvDEPTH (cv) = 0;
375	get_padlist (aTHX_ cv);	341	get_padlist (cv);
376	}	342	}
377	}	343	}
378	#ifdef CXt_FORMAT	344	#ifdef CXt_FORMAT
379	else if (CxTYPE(cx) == CXt_FORMAT)	345	else if (CxTYPE(cx) == CXt_FORMAT)
380	{	346	{
…		…
398		364
399	c->defav = flags & TRANSFER_SAVE_DEFAV ? (AV *)SvREFCNT_inc (GvAV (PL_defgv)) : 0;	365	c->defav = flags & TRANSFER_SAVE_DEFAV ? (AV *)SvREFCNT_inc (GvAV (PL_defgv)) : 0;
400	c->defsv = flags & TRANSFER_SAVE_DEFSV ? SvREFCNT_inc (DEFSV) : 0;	366	c->defsv = flags & TRANSFER_SAVE_DEFSV ? SvREFCNT_inc (DEFSV) : 0;
401	c->errsv = flags & TRANSFER_SAVE_ERRSV ? SvREFCNT_inc (ERRSV) : 0;	367	c->errsv = flags & TRANSFER_SAVE_ERRSV ? SvREFCNT_inc (ERRSV) : 0;
402		368
403	c->dowarn = PL_dowarn;	369	#define VAR(name,type)c->name = PL_ ## name;
404	c->in_eval = PL_in_eval;	370	# include "state.h"
405		371	#undef VAR
406	c->curstackinfo = PL_curstackinfo;
407	c->curstack = PL_curstack;
408	c->mainstack = PL_mainstack;
409	c->stack_sp = PL_stack_sp;
410	c->op = PL_op;
411	c->curpad = PL_curpad;
412	c->comppad = PL_comppad;
413	c->compcv = PL_compcv;
414	c->stack_base = PL_stack_base;
415	c->stack_max = PL_stack_max;
416	c->tmps_stack = PL_tmps_stack;
417	c->tmps_floor = PL_tmps_floor;
418	c->tmps_ix = PL_tmps_ix;
419	c->tmps_max = PL_tmps_max;
420	c->markstack = PL_markstack;
421	c->markstack_ptr = PL_markstack_ptr;
422	c->markstack_max = PL_markstack_max;
423	c->scopestack = PL_scopestack;
424	c->scopestack_ix = PL_scopestack_ix;
425	c->scopestack_max = PL_scopestack_max;
426	c->savestack = PL_savestack;
427	c->savestack_ix = PL_savestack_ix;
428	c->savestack_max = PL_savestack_max;
429	#if PERL_VERSION < 9
430	c->retstack = PL_retstack;
431	c->retstack_ix = PL_retstack_ix;
432	c->retstack_max = PL_retstack_max;
433	#endif
434	c->curpm = PL_curpm;
435	c->curcop = PL_curcop;
436	c->top_env = PL_top_env;
437	}	372	}
438		373
439	/*	374	/*
440	* allocate various perl stacks. This is an exact copy	375	* allocate various perl stacks. This is an exact copy
441	* of perl.c:init_stacks, except that it uses less memory	376	* of perl.c:init_stacks, except that it uses less memory
442	* on the (sometimes correct) assumption that coroutines do	377	* on the (sometimes correct) assumption that coroutines do
443	* not usually need a lot of stackspace.	378	* not usually need a lot of stackspace.
444	*/	379	*/
445	static void	380	static void
446	coro_init_stacks (pTHX)	381	coro_init_stacks ()
447	{	382	{
448	LOCK;
449
450	PL_curstackinfo = new_stackinfo(96, 1024/sizeof(PERL_CONTEXT) - 1);	383	PL_curstackinfo = new_stackinfo(96, 1024/sizeof(PERL_CONTEXT) - 1);
451	PL_curstackinfo->si_type = PERLSI_MAIN;	384	PL_curstackinfo->si_type = PERLSI_MAIN;
452	PL_curstack = PL_curstackinfo->si_stack;	385	PL_curstack = PL_curstackinfo->si_stack;
453	PL_mainstack = PL_curstack; /* remember in case we switch stacks */	386	PL_mainstack = PL_curstack; /* remember in case we switch stacks */
454		387
…		…
475		408
476	New(54,PL_savestack,96,ANY);	409	New(54,PL_savestack,96,ANY);
477	PL_savestack_ix = 0;	410	PL_savestack_ix = 0;
478	PL_savestack_max = 96;	411	PL_savestack_max = 96;
479		412
480	#if PERL_VERSION < 9	413	#if !PERL_VERSION_ATLEAST (5,9,0)
481	New(54,PL_retstack,8,OP*);	414	New(54,PL_retstack,8,OP*);
482	PL_retstack_ix = 0;	415	PL_retstack_ix = 0;
483	PL_retstack_max = 8;	416	PL_retstack_max = 8;
484	#endif	417	#endif
485
486	UNLOCK;
487	}	418	}
488		419
489	/*	420	/*
490	* destroy the stacks, the callchain etc...	421	* destroy the stacks, the callchain etc...
491	*/	422	*/
492	static void	423	static void
493	destroy_stacks(pTHX)	424	coro_destroy_stacks ()
494	{	425	{
495	if (!IN_DESTRUCT)	426	if (!IN_DESTRUCT)
496	{	427	{
497	/* is this ugly, I ask? */	428	/* is this ugly, I ask? */
498	LEAVE_SCOPE (0);	429	LEAVE_SCOPE (0);
…		…
529		460
530	Safefree (PL_tmps_stack);	461	Safefree (PL_tmps_stack);
531	Safefree (PL_markstack);	462	Safefree (PL_markstack);
532	Safefree (PL_scopestack);	463	Safefree (PL_scopestack);
533	Safefree (PL_savestack);	464	Safefree (PL_savestack);
534	#if PERL_VERSION < 9	465	#if !PERL_VERSION_ATLEAST (5,9,0)
535	Safefree (PL_retstack);	466	Safefree (PL_retstack);
536	#endif	467	#endif
537	}	468	}
538		469
539	static void	470	static void
540	allocate_stack (Coro__State ctx, int alloc)	471	setup_coro (struct coro *coro)
541	{
542	coro_stack *stack;
543
544	New (0, stack, 1, coro_stack);
545
546	stack->refcnt = 1;
547	stack->usecnt = 1;
548	stack->gencnt = ctx->gencnt = 0;
549
550	if (alloc)
551	{
552	#if HAVE_MMAP
553	stack->ssize = ((STACKSIZE * sizeof (long) + PAGESIZE - 1) / PAGESIZE + STACKGUARD) * PAGESIZE; /* mmap should do allocate-on-write for us */
554	stack->sptr = mmap (0, stack->ssize, PROT_EXEC|PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, 0, 0);
555	if (stack->sptr != (void *)-1)
556	{
557	# if STACKGUARD
558	mprotect (stack->sptr, STACKGUARD * PAGESIZE, PROT_NONE);
559	# endif
560	}
561	else
562	#endif
563	{
564	stack->ssize = - (STACKSIZE * (long)sizeof (long));
565	New (0, stack->sptr, STACKSIZE, long);
566	}
567	}
568	else
569	stack->sptr = 0;
570
571	ctx->stack = stack;
572	}
573
574	static void
575	deallocate_stack (Coro__State ctx)
576	{
577	coro_stack *stack = ctx->stack;
578
579	ctx->stack = 0;
580
581	if (stack)
582	{
583	if (!--stack->refcnt)
584	{
585	#ifdef HAVE_MMAP
586	if (stack->ssize > 0 && stack->sptr)
587	munmap (stack->sptr, stack->ssize);
588	else
589	#endif
590	Safefree (stack->sptr);
591
592	Safefree (stack);
593	}
594	else if (ctx->gencnt == stack->gencnt)
595	--stack->usecnt;
596	}
597	}
598
599	static void
600	setup_coro (void *arg)
601	{	472	{
602	/*	473	/*
603	* emulate part of the perl startup here.	474	* emulate part of the perl startup here.
604	*/	475	*/
605	dTHX;
606	dSP;
607	Coro__State ctx = (Coro__State)arg;
608	SV *sub_init = (SV *)get_cv (SUB_INIT, FALSE);
609		476
610	coro_init_stacks (aTHX);	477	coro_init_stacks ();
		478
611	/*PL_curcop = 0;*/	479	PL_curcop = 0;
612	/*PL_in_eval = PL_in_eval;*/ /* inherit */	480	PL_in_eval = 0;
		481	PL_curpm = 0;
		482
		483	{
		484	dSP;
		485	LOGOP myop;
		486
		487	/* I have no idea why this is needed, but it is */
		488	PUSHMARK (SP);
		489
613	SvREFCNT_dec (GvAV (PL_defgv));	490	SvREFCNT_dec (GvAV (PL_defgv));
614	GvAV (PL_defgv) = ctx->args; ctx->args = 0;	491	GvAV (PL_defgv) = coro->args; coro->args = 0;
615		492
616	SPAGAIN;
617
618	if (ctx->stack)
619	{
620	ctx->cursp = 0;
621
622	PUSHMARK(SP);
623	PUTBACK;
624	(void) call_sv (sub_init, G_VOID|G_NOARGS|G_EVAL);
625
626	if (SvTRUE (ERRSV))
627	croak (NULL);
628	else
629	croak ("FATAL: CCTXT coroutine returned!");
630	}
631	else
632	{
633	UNOP myop;
634
635	Zero(&myop, 1, UNOP);	493	Zero (&myop, 1, LOGOP);
636	myop.op_next = Nullop;	494	myop.op_next = Nullop;
637	myop.op_flags = OPf_WANT_VOID;	495	myop.op_flags = OPf_WANT_VOID;
638		496
639	PL_op = (OP *)&myop;	497	PL_op = (OP *)&myop;
640		498
641	PUSHMARK(SP);	499	PUSHMARK (SP);
642	XPUSHs (sub_init);	500	XPUSHs ((SV *)get_cv ("Coro::State::_coro_init", FALSE));
643	/*
644	* the next line is slightly wrong, as PL_op->op_next
645	* is actually being executed so we skip the first op.
646	* that doesn't matter, though, since it is only
647	* pp_nextstate and we never return...
648	* ah yes, and I don't care anyways ;)
649	*/
650	PUTBACK;	501	PUTBACK;
651	PL_op = PL_ppaddr[OP_ENTERSUB](aTHX);	502	PL_op = PL_ppaddr[OP_ENTERSUB](aTHX);
652	SPAGAIN;	503	SPAGAIN;
653		504
654	ENTER; /* necessary e.g. for dounwind */	505	ENTER; /* necessary e.g. for dounwind */
655	}	506	}
656	}	507	}
657		508
658	static void	509	static void
659	continue_coro (void *arg)	510	free_coro_mortal ()
660	{	511	{
661	/*
662	* this is a _very_ stripped down perl interpreter ;)
663	*/
664	dTHX;
665	Coro__State ctx = (Coro__State)arg;
666
667	PL_top_env = &PL_start_env;
668
669	ctx->cursp = 0;
670	PL_op = PL_op->op_next;
671	CALLRUNOPS(aTHX);
672
673	abort ();
674	}
675
676	/* never call directly, always through the coro_state_transfer global variable */
677	static void
678	transfer_impl (pTHX_ struct coro *prev, struct coro *next, int flags)
679	{
680	dSTACKLEVEL;
681
682	if (prev != next)
683	{
684	/* has this coro been created yet? */
685	if (next->mainstack)
686	{
687	LOCK;
688	SAVE (prev, flags);
689	LOAD (next);
690	UNLOCK;
691
692	/* mark this state as in-use */
693	next->mainstack = 0;
694	next->tmps_ix = -2;
695
696	/* stacklevel changed? if yes, grab the stack for us! */
697	if (flags & TRANSFER_SAVE_CCTXT)
698	{
699	if (!prev->stack)
700	allocate_stack (prev, 0);
701	else if (prev->cursp != stacklevel
702	&& prev->stack->usecnt > 1)
703	{
704	prev->gencnt = ++prev->stack->gencnt;
705	prev->stack->usecnt = 1;
706	}
707
708	/* has our stack been invalidated? */
709	if (next->stack && next->stack->gencnt != next->gencnt)
710	{
711	deallocate_stack (next);
712	allocate_stack (next, 1);
713	coro_create (&(next->stack->cctx),
714	continue_coro, (void *)next,
715	next->stack->sptr, labs (next->stack->ssize));
716	}
717
718	coro_transfer (&(prev->stack->cctx), &(next->stack->cctx));
719	prev->cursp = stacklevel;
720	/* don't add any code here */
721	}
722	else
723	next->cursp = stacklevel;
724	}
725	else if (next->tmps_ix == -2)
726	croak ("tried to transfer to running coroutine");
727	else
728	{
729	LOCK;
730	SAVE (prev, -1); /* first get rid of the old state */
731	UNLOCK;
732
733	/* create the coroutine for the first time */
734	if (flags & TRANSFER_SAVE_CCTXT)
735	{
736	if (!prev->stack)
737	allocate_stack (prev, 0);
738
739	/* the new coroutine starts with start_env again */
740	PL_top_env = &PL_start_env;
741
742	if (prev->stack->sptr && flags & TRANSFER_LAZY_STACK)
743	{
744	setup_coro (next);
745	next->cursp = stacklevel;
746
747	prev->stack->refcnt++;
748	prev->stack->usecnt++;
749	next->stack = prev->stack;
750	next->gencnt = prev->gencnt;
751	}
752	else
753	{
754	assert (!next->stack);
755	allocate_stack (next, 1);
756	coro_create (&(next->stack->cctx),
757	setup_coro, (void *)next,
758	next->stack->sptr, labs (next->stack->ssize));
759	coro_transfer (&(prev->stack->cctx), &(next->stack->cctx));
760	prev->cursp = stacklevel;
761	/* don't add any code here */
762	}
763	}
764	else
765	{
766	setup_coro (next);
767	next->cursp = stacklevel;
768	}
769	}
770	}
771
772	LOCK;
773	if (coro_mortal)	512	if (coro_mortal)
774	{	513	{
775	SvREFCNT_dec (coro_mortal);	514	SvREFCNT_dec (coro_mortal);
776	coro_mortal = 0;	515	coro_mortal = 0;
777	}	516	}
		517	}
		518
		519	static void NOINLINE
		520	prepare_cctx (coro_cctx *cctx)
		521	{
		522	dSP;
		523	LOGOP myop;
		524
		525	Zero (&myop, 1, LOGOP);
		526	myop.op_next = PL_op;
		527	myop.op_flags = OPf_WANT_VOID;
		528
		529	sv_setiv (get_sv ("Coro::State::_cctx", FALSE), PTR2IV (cctx));
		530
		531	PUSHMARK (SP);
		532	XPUSHs ((SV *)get_cv ("Coro::State::_cctx_init", FALSE));
		533	PUTBACK;
		534	PL_restartop = PL_ppaddr[OP_ENTERSUB](aTHX);
		535	SPAGAIN;
		536	}
		537
		538	static void
		539	coro_run (void *arg)
		540	{
		541	/* coro_run is the alternative epilogue of transfer() */
778	UNLOCK;	542	UNLOCK;
779	}
780		543
781	/* use this function pointer to call the above function */	544	/*
782	/* this is done to increase chances of the compiler not inlining the call */	545	* this is a _very_ stripped down perl interpreter ;)
783	void (*coro_state_transfer)(pTHX_ struct coro *prev, struct coro *next, int flags) = transfer_impl;	546	*/
		547	PL_top_env = &PL_start_env;
784		548
785	#define SV_CORO(sv,func) \	549	/* inject call to cctx_init */
786	do { \	550	prepare_cctx ((coro_cctx *)arg);
787	if (SvROK (sv)) \	551
788	sv = SvRV (sv); \	552	/* somebody will hit me for both perl_run and PL_restartop */
789	\	553	perl_run (PL_curinterp);
790	if (SvTYPE (sv) == SVt_PVHV && SvSTASH (sv) != coro_state_stash) \	554
791	{ \	555	fputs ("FATAL: C coroutine fell over the edge of the world, aborting. Did you call exit in a coroutine?\n", stderr);
792	HE *he = hv_fetch_ent ((HV *)sv, ucoro_state_sv, 0, ucoro_state_hash); \	556	abort ();
793	\	557	}
794	if (!he) \	558
795	croak ("%s() -- %s is a hashref but lacks the " UCORO_STATE " key", func, # sv); \	559	static coro_cctx *
796	\	560	cctx_new ()
797	(sv) = SvRV (HeVAL(he)); \	561	{
798	} \	562	coro_cctx *cctx;
799	\	563
800	/* must also be changed inside Coro::Cont::yield */ \	564	++cctx_count;
801	if (!SvOBJECT (sv) || SvSTASH (sv) != coro_state_stash) \	565
802	croak ("%s() -- %s is not (and contains not) a Coro::State object", func, # sv); \	566	New (0, cctx, 1, coro_cctx);
803	\	567
804	} while(0)	568	#if HAVE_MMAP
		569
		570	cctx->ssize = ((STACKSIZE * sizeof (long) + PAGESIZE - 1) / PAGESIZE + STACKGUARD) * PAGESIZE;
		571	/* mmap suppsedly does allocate-on-write for us */
		572	cctx->sptr = mmap (0, cctx->ssize, PROT_EXEC|PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, 0, 0);
		573
		574	if (cctx->sptr == (void *)-1)
		575	{
		576	perror ("FATAL: unable to mmap stack for coroutine");
		577	_exit (EXIT_FAILURE);
		578	}
		579
		580	# if STACKGUARD
		581	mprotect (cctx->sptr, STACKGUARD * PAGESIZE, PROT_NONE);
		582	# endif
		583
		584	#else
		585
		586	cctx->ssize = STACKSIZE * (long)sizeof (long);
		587	New (0, cctx->sptr, STACKSIZE, long);
		588
		589	if (!cctx->sptr)
		590	{
		591	perror ("FATAL: unable to malloc stack for coroutine");
		592	_exit (EXIT_FAILURE);
		593	}
		594
		595	#endif
		596
		597	#if USE_VALGRIND
		598	cctx->valgrind_id = VALGRIND_STACK_REGISTER (
		599	STACKGUARD * PAGESIZE + (char *)cctx->sptr,
		600	cctx->ssize + (char *)cctx->sptr
		601	);
		602	#endif
		603
		604	coro_create (&cctx->cctx, coro_run, (void *)cctx, cctx->sptr, cctx->ssize);
		605
		606	return cctx;
		607	}
		608
		609	static void
		610	cctx_free (coro_cctx *cctx)
		611	{
		612	if (!cctx)
		613	return;
		614
		615	--cctx_count;
		616
		617	#if USE_VALGRIND
		618	VALGRIND_STACK_DEREGISTER (cctx->valgrind_id);
		619	#endif
		620
		621	#if HAVE_MMAP
		622	munmap (cctx->sptr, cctx->ssize);
		623	#else
		624	Safefree (cctx->sptr);
		625	#endif
		626
		627	Safefree (cctx);
		628	}
		629
		630	static coro_cctx *
		631	cctx_get ()
		632	{
		633	coro_cctx *cctx;
		634
		635	if (cctx_first)
		636	{
		637	--cctx_idle;
		638	cctx = cctx_first;
		639	cctx_first = cctx->next;
		640	}
		641	else
		642	{
		643	cctx = cctx_new ();
		644	PL_op = PL_op->op_next;
		645	}
		646
		647	return cctx;
		648	}
		649
		650	static void
		651	cctx_put (coro_cctx *cctx)
		652	{
		653	++cctx_idle;
		654	cctx->next = cctx_first;
		655	cctx_first = cctx;
		656	}
		657
		658	/* never call directly, always through the coro_state_transfer global variable */
		659	static void NOINLINE
		660	transfer (struct coro *prev, struct coro *next, int flags)
		661	{
		662	dSTACKLEVEL;
		663
		664	/* sometimes transfer is only called to set idle_sp */
		665	if (flags == TRANSFER_SET_STACKLEVEL)
		666	((coro_cctx *)prev)->idle_sp = STACKLEVEL;
		667	else if (prev != next)
		668	{
		669	coro_cctx *prev__cctx;
		670
		671	LOCK;
		672
		673	if (next->mainstack)
		674	{
		675	/* coroutine already started */
		676	SAVE (prev, flags);
		677	LOAD (next);
		678	}
		679	else
		680	{
		681	/* need to start coroutine */
		682	/* first get rid of the old state */
		683	SAVE (prev, -1);
		684	/* setup coroutine call */
		685	setup_coro (next);
		686	/* need a stack */
		687	next->cctx = 0;
		688	}
		689
		690	if (!prev->cctx)
		691	/* create a new empty context */
		692	Newz (0, prev->cctx, 1, coro_cctx);
		693
		694	prev__cctx = prev->cctx;
		695
		696	/* possibly "free" the cctx */
		697	if (prev__cctx->idle_sp == STACKLEVEL)
		698	{
		699	assert (PL_top_env == prev__cctx->top_env);//D
		700	cctx_put (prev__cctx);
		701	prev->cctx = 0;
		702	}
		703
		704	if (!next->cctx)
		705	next->cctx = cctx_get ();
		706
		707	if (prev__cctx != next->cctx)
		708	{
		709	prev__cctx->top_env = PL_top_env;
		710	PL_top_env = next->cctx->top_env;
		711	coro_transfer (&prev__cctx->cctx, &next->cctx->cctx);
		712	}
		713
		714	free_coro_mortal ();
		715
		716	UNLOCK;
		717	}
		718	}
		719
		720	struct transfer_args
		721	{
		722	struct coro *prev, *next;
		723	int flags;
		724	};
		725
		726	#define TRANSFER(ta) transfer ((ta).prev, (ta).next, (ta).flags)
805		727
806	static void	728	static void
807	coro_state_destroy (struct coro *coro)	729	coro_state_destroy (struct coro *coro)
808	{	730	{
809	if (coro->refcnt--)	731	if (coro->refcnt--)
…		…
811		733
812	if (coro->mainstack && coro->mainstack != main_mainstack)	734	if (coro->mainstack && coro->mainstack != main_mainstack)
813	{	735	{
814	struct coro temp;	736	struct coro temp;
815		737
816	SAVE (aTHX_ (&temp), TRANSFER_SAVE_ALL);	738	SAVE ((&temp), TRANSFER_SAVE_ALL);
817	LOAD (aTHX_ coro);	739	LOAD (coro);
818		740
819	destroy_stacks (aTHX);	741	coro_destroy_stacks ();
820		742
821	LOAD ((&temp)); /* this will get rid of defsv etc.. */	743	LOAD ((&temp)); /* this will get rid of defsv etc.. */
822		744
823	coro->mainstack = 0;	745	coro->mainstack = 0;
824	}	746	}
825		747
826	deallocate_stack (coro);	748	cctx_free (coro->cctx);
827	SvREFCNT_dec (coro->args);	749	SvREFCNT_dec (coro->args);
828	Safefree (coro);	750	Safefree (coro);
829	}	751	}
830		752
831	static int	753	static int
832	coro_state_clear (SV *sv, MAGIC *mg)	754	coro_state_clear (pTHX_ SV *sv, MAGIC *mg)
833	{	755	{
834	struct coro *coro = (struct coro *)mg->mg_ptr;	756	struct coro *coro = (struct coro *)mg->mg_ptr;
835	mg->mg_ptr = 0;	757	mg->mg_ptr = 0;
836		758
837	coro_state_destroy (coro);	759	coro_state_destroy (coro);
838		760
839	return 0;	761	return 0;
840	}	762	}
841		763
842	static int	764	static int
843	coro_state_dup (MAGIC *mg, CLONE_PARAMS *params)	765	coro_state_dup (pTHX_ MAGIC *mg, CLONE_PARAMS *params)
844	{	766	{
845	struct coro *coro = (struct coro *)mg->mg_ptr;	767	struct coro *coro = (struct coro *)mg->mg_ptr;
846		768
847	++coro->refcnt;	769	++coro->refcnt;
848		770
849	return 0;	771	return 0;
850	}	772	}
851		773
852	static MGVTBL coro_state_vtbl = { 0, 0, 0, 0, coro_state_clear, 0, coro_state_dup, 0 };	774	static MGVTBL coro_state_vtbl = {
		775	0, 0, 0, 0,
		776	coro_state_clear,
		777	0,
		778	#ifdef MGf_DUP
		779	coro_state_dup,
		780	#else
		781	# define MGf_DUP 0
		782	#endif
		783	};
853		784
854	static struct coro *	785	static struct coro *
855	SvSTATE (SV *coro)	786	SvSTATE (SV *coro)
856	{	787	{
857	MAGIC *mg = SvMAGIC (SvROK (coro) ? SvRV (coro) : coro);	788	HV *stash;
		789	MAGIC *mg;
		790
		791	if (SvROK (coro))
		792	coro = SvRV (coro);
		793
		794	stash = SvSTASH (coro);
		795	if (stash != coro_stash && stash != coro_state_stash)
		796	{
		797	/* very slow, but rare, check */
		798	if (!sv_derived_from (sv_2mortal (newRV_inc (coro)), "Coro::State"))
		799	croak ("Coro::State object required");
		800	}
		801
		802	mg = SvMAGIC (coro);
858	assert (mg->mg_type == PERL_MAGIC_ext);	803	assert (mg->mg_type == PERL_MAGIC_ext);
859	return (struct coro *)mg->mg_ptr;	804	return (struct coro *)mg->mg_ptr;
860	}	805	}
861		806
862	static void	807	static void
		808	prepare_transfer (struct transfer_args *ta, SV *prev, SV *next, int flags)
		809	{
		810	ta->prev = SvSTATE (prev);
		811	ta->next = SvSTATE (next);
		812	ta->flags = flags;
		813	}
		814
		815	static void
863	api_transfer (pTHX_ SV *prev, SV *next, int flags)	816	api_transfer (SV *prev, SV *next, int flags)
864	{	817	{
865	SV_CORO (prev, "Coro::transfer");	818	dTHX;
866	SV_CORO (next, "Coro::transfer");	819	struct transfer_args ta;
867		820
868	coro_state_transfer (aTHX_ SvSTATE (prev), SvSTATE (next), flags);	821	prepare_transfer (&ta, prev, next, flags);
		822	TRANSFER (ta);
869	}	823	}
870		824
871	/** Coro ********************************************************************/	825	/** Coro ********************************************************************/
872		826
873	#define PRIO_MAX 3	827	#define PRIO_MAX 3
…		…
881	static GV *coro_current, *coro_idle;	835	static GV *coro_current, *coro_idle;
882	static AV *coro_ready [PRIO_MAX-PRIO_MIN+1];	836	static AV *coro_ready [PRIO_MAX-PRIO_MIN+1];
883	static int coro_nready;	837	static int coro_nready;
884		838
885	static void	839	static void
886	coro_enq (pTHX_ SV *sv)	840	coro_enq (SV *sv)
887	{	841	{
888	int prio;	842	int prio;
889		843
890	if (SvTYPE (sv) != SVt_PVHV)	844	if (SvTYPE (sv) != SVt_PVHV)
891	croak ("Coro::ready tried to enqueue something that is not a coroutine");	845	croak ("Coro::ready tried to enqueue something that is not a coroutine");
892		846
893	{
894	SV *coro = sv;
895	SV_CORO (coro, "omg");
896	prio = SvSTATE (coro)->prio;	847	prio = SvSTATE (sv)->prio;
897	}
898		848
899	av_push (coro_ready [prio - PRIO_MIN], sv);	849	av_push (coro_ready [prio - PRIO_MIN], sv);
900	coro_nready++;	850	coro_nready++;
901	}	851	}
902		852
903	static SV *	853	static SV *
904	coro_deq (pTHX_ int min_prio)	854	coro_deq (int min_prio)
905	{	855	{
906	int prio = PRIO_MAX - PRIO_MIN;	856	int prio = PRIO_MAX - PRIO_MIN;
907		857
908	min_prio -= PRIO_MIN;	858	min_prio -= PRIO_MIN;
909	if (min_prio < 0)	859	if (min_prio < 0)
…		…
926		876
927	if (SvROK (coro))	877	if (SvROK (coro))
928	coro = SvRV (coro);	878	coro = SvRV (coro);
929		879
930	LOCK;	880	LOCK;
931	coro_enq (aTHX_ SvREFCNT_inc (coro));	881	coro_enq (SvREFCNT_inc (coro));
932	UNLOCK;	882	UNLOCK;
933	}	883	}
934		884
935	static void	885	static void
		886	prepare_schedule (struct transfer_args *ta)
		887	{
		888	SV *current, *prev, *next;
		889
		890	current = GvSV (coro_current);
		891
		892	for (;;)
		893	{
		894	LOCK;
		895	next = coro_deq (PRIO_MIN);
		896	UNLOCK;
		897
		898	if (next)
		899	break;
		900
		901	{
		902	dSP;
		903
		904	ENTER;
		905	SAVETMPS;
		906
		907	PUSHMARK (SP);
		908	PUTBACK;
		909	call_sv (GvSV (coro_idle), G_DISCARD);
		910
		911	FREETMPS;
		912	LEAVE;
		913	}
		914	}
		915
		916	prev = SvRV (current);
		917	SvRV (current) = next;
		918
		919	/* free this only after the transfer */
		920	LOCK;
		921	free_coro_mortal ();
		922	UNLOCK;
		923	coro_mortal = prev;
		924
		925	ta->prev = SvSTATE (prev);
		926	ta->next = SvSTATE (next);
		927	ta->flags = TRANSFER_SAVE_ALL;
		928	}
		929
		930	static void
		931	prepare_cede (struct transfer_args *ta)
		932	{
		933	LOCK;
		934	coro_enq (SvREFCNT_inc (SvRV (GvSV (coro_current))));
		935	UNLOCK;
		936
		937	prepare_schedule (ta);
		938	}
		939
		940	static void
936	api_schedule (void)	941	api_schedule (void)
937	{	942	{
938	dTHX;	943	dTHX;
		944	struct transfer_args ta;
939		945
940	SV *prev, *next;	946	prepare_schedule (&ta);
941		947	TRANSFER (ta);
942	LOCK;
943
944	prev = SvRV (GvSV (coro_current));
945	next = coro_deq (aTHX_ PRIO_MIN);
946
947	if (!next)
948	next = SvREFCNT_inc (SvRV (GvSV (coro_idle)));
949
950	/* free this only after the transfer */
951	coro_mortal = prev;
952	SV_CORO (prev, "Coro::schedule");
953
954	SvRV (GvSV (coro_current)) = next;
955
956	SV_CORO (next, "Coro::schedule");
957
958	UNLOCK;
959
960	coro_state_transfer (aTHX_ SvSTATE (prev), SvSTATE (next),
961	TRANSFER_SAVE_ALL | TRANSFER_LAZY_STACK);
962	}	948	}
963		949
964	static void	950	static void
965	api_cede (void)	951	api_cede (void)
966	{	952	{
967	dTHX;	953	dTHX;
		954	struct transfer_args ta;
968		955
969	LOCK;	956	prepare_cede (&ta);
970	coro_enq (aTHX_ SvREFCNT_inc (SvRV (GvSV (coro_current))));	957	TRANSFER (ta);
971	UNLOCK;
972
973	api_schedule ();
974	}	958	}
975		959
976	MODULE = Coro::State PACKAGE = Coro::State	960	MODULE = Coro::State PACKAGE = Coro::State
977		961
978	PROTOTYPES: DISABLE	962	PROTOTYPES: DISABLE
979		963
980	BOOT:	964	BOOT:
981	{ /* {} necessary for stoopid perl-5.6.x */	965	{
982	#ifdef USE_ITHREADS	966	#ifdef USE_ITHREADS
983	MUTEX_INIT (&coro_mutex);	967	MUTEX_INIT (&coro_mutex);
984	#endif	968	#endif
985	BOOT_PAGESIZE;	969	BOOT_PAGESIZE;
986		970
987	ucoro_state_sv = newSVpv (UCORO_STATE, sizeof(UCORO_STATE) - 1);
988	PERL_HASH(ucoro_state_hash, UCORO_STATE, sizeof(UCORO_STATE) - 1);
989	coro_state_stash = gv_stashpv ("Coro::State", TRUE);	971	coro_state_stash = gv_stashpv ("Coro::State", TRUE);
990		972
991	newCONSTSUB (coro_state_stash, "SAVE_DEFAV", newSViv (TRANSFER_SAVE_DEFAV));	973	newCONSTSUB (coro_state_stash, "SAVE_DEFAV", newSViv (TRANSFER_SAVE_DEFAV));
992	newCONSTSUB (coro_state_stash, "SAVE_DEFSV", newSViv (TRANSFER_SAVE_DEFSV));	974	newCONSTSUB (coro_state_stash, "SAVE_DEFSV", newSViv (TRANSFER_SAVE_DEFSV));
993	newCONSTSUB (coro_state_stash, "SAVE_ERRSV", newSViv (TRANSFER_SAVE_ERRSV));	975	newCONSTSUB (coro_state_stash, "SAVE_ERRSV", newSViv (TRANSFER_SAVE_ERRSV));
994	newCONSTSUB (coro_state_stash, "SAVE_CCTXT", newSViv (TRANSFER_SAVE_CCTXT));
995		976
996	main_mainstack = PL_mainstack;	977	main_mainstack = PL_mainstack;
997		978
998	coroapi.ver = CORO_API_VERSION;	979	coroapi.ver = CORO_API_VERSION;
999	coroapi.transfer = api_transfer;	980	coroapi.transfer = api_transfer;
…		…
1010	int i;	991	int i;
1011		992
1012	Newz (0, coro, 1, struct coro);	993	Newz (0, coro, 1, struct coro);
1013	coro->args = newAV ();	994	coro->args = newAV ();
1014		995
1015	for (i = 1; i < items; i++)
1016	av_push (coro->args, newSVsv (ST (i)));
1017
1018	/*coro->mainstack = 0; *//*actual work is done inside transfer */
1019	/*coro->stack = 0;*/
1020
1021	hv = newHV ();	996	hv = newHV ();
1022	sv_magicext ((SV *)hv, 0, PERL_MAGIC_ext, &coro_state_vtbl, (char *)coro, 0)->mg_flags |= MGf_DUP;	997	sv_magicext ((SV *)hv, 0, PERL_MAGIC_ext, &coro_state_vtbl, (char *)coro, 0)->mg_flags |= MGf_DUP;
1023	RETVAL = sv_bless (newRV_noinc ((SV *)hv), gv_stashpv (klass, 1));	998	RETVAL = sv_bless (newRV_noinc ((SV *)hv), gv_stashpv (klass, 1));
		999
		1000	for (i = 1; i < items; i++)
		1001	av_push (coro->args, newSVsv (ST (i)));
1024	}	1002	}
1025	OUTPUT:	1003	OUTPUT:
1026	RETVAL	1004	RETVAL
1027		1005
1028	void	1006	void
1029	transfer(prev, next, flags)	1007	_set_stacklevel (...)
1030	SV *prev	1008	ALIAS:
1031	SV *next	1009	Coro::State::transfer = 1
1032	int flags	1010	Coro::schedule = 2
		1011	Coro::cede = 3
		1012	Coro::Cont::yield = 4
1033	CODE:	1013	CODE:
1034	PUTBACK;
1035	SV_CORO (next, "Coro::transfer");
1036	SV_CORO (prev, "Coro::transfer");
1037	coro_state_transfer (aTHX_ SvSTATE (prev), SvSTATE (next), flags);
1038	SPAGAIN;
1039
1040	int
1041	prio (Coro::State coro, int newprio = 0)
1042	ALIAS:
1043	nice = 1
1044	CODE:
1045	{	1014	{
1046	RETVAL = coro->prio;	1015	struct transfer_args ta;
1047		1016
1048	if (items > 1)	1017	switch (ix)
1049	{	1018	{
		1019	case 0:
		1020	ta.prev = (struct coro *)INT2PTR (coro_cctx *, SvIV (ST (0)));
		1021	ta.next = 0;
		1022	ta.flags = TRANSFER_SET_STACKLEVEL;
		1023	break;
		1024
		1025	case 1:
1050	if (ix)	1026	if (items != 3)
1051	newprio += coro->prio;	1027	croak ("Coro::State::transfer(prev,next,flags) expects three arguments, not %d", items);
1052		1028
1053	if (newprio < PRIO_MIN) newprio = PRIO_MIN;	1029	prepare_transfer (&ta, ST (0), ST (1), SvIV (ST (2)));
1054	if (newprio > PRIO_MAX) newprio = PRIO_MAX;	1030	break;
1055		1031
1056	coro->prio = newprio;	1032	case 2:
		1033	prepare_schedule (&ta);
		1034	break;
		1035
		1036	case 3:
		1037	prepare_cede (&ta);
		1038	break;
		1039
		1040	case 4:
		1041	{
		1042	SV *yieldstack;
		1043	SV *sv;
		1044	AV *defav = GvAV (PL_defgv);
		1045
		1046	yieldstack = *hv_fetch (
		1047	(HV *)SvRV (GvSV (coro_current)),
		1048	"yieldstack", sizeof ("yieldstack") - 1,
		1049	0
		1050	);
		1051
		1052	/* set up @_ -- ugly */
		1053	av_clear (defav);
		1054	av_fill (defav, items - 1);
		1055	while (items--)
		1056	av_store (defav, items, SvREFCNT_inc (ST(items)));
		1057
		1058	sv = av_pop ((AV *)SvRV (yieldstack));
		1059	ta.prev = SvSTATE (*av_fetch ((AV *)SvRV (sv), 0, 0));
		1060	ta.next = SvSTATE (*av_fetch ((AV *)SvRV (sv), 1, 0));
		1061	ta.flags = 0;
		1062	SvREFCNT_dec (sv);
		1063	}
		1064	break;
		1065
1057	}	1066	}
		1067
		1068	TRANSFER (ta);
1058	}	1069	}
1059		1070
1060	void	1071	void
1061	_clone_state_from (SV *dst, SV *src)	1072	_clone_state_from (SV *dst, SV *src)
1062	CODE:	1073	CODE:
…		…
1074	int code	1085	int code
1075	PROTOTYPE: $	1086	PROTOTYPE: $
1076	CODE:	1087	CODE:
1077	_exit (code);	1088	_exit (code);
1078		1089
1079	MODULE = Coro::State PACKAGE = Coro::Cont	1090	int
		1091	cctx_count ()
		1092	CODE:
		1093	RETVAL = cctx_count;
		1094	OUTPUT:
		1095	RETVAL
1080		1096
1081	void	1097	int
1082	yield (...)	1098	cctx_idle ()
1083	PROTOTYPE: @	1099	CODE:
1084	CODE:	1100	RETVAL = cctx_idle;
1085	SV *yieldstack;	1101	OUTPUT:
1086	SV *sv;	1102	RETVAL
1087	AV *defav = GvAV (PL_defgv);
1088	struct coro *prev, *next;
1089
1090	yieldstack = *hv_fetch (
1091	(HV *)SvRV (GvSV (coro_current)),
1092	"yieldstack", sizeof ("yieldstack") - 1,
1093	0
1094	);
1095
1096	/* set up @_ -- ugly */
1097	av_clear (defav);
1098	av_fill (defav, items - 1);
1099	while (items--)
1100	av_store (defav, items, SvREFCNT_inc (ST(items)));
1101
1102	sv = av_pop ((AV *)SvRV (yieldstack));
1103	prev = SvSTATE ((SV*)SvRV (*av_fetch ((AV *)SvRV (sv), 0, 0)));
1104	next = SvSTATE ((SV*)SvRV (*av_fetch ((AV *)SvRV (sv), 1, 0)));
1105	SvREFCNT_dec (sv);
1106
1107	coro_state_transfer (aTHX_ prev, next, 0);
1108		1103
1109	MODULE = Coro::State PACKAGE = Coro	1104	MODULE = Coro::State PACKAGE = Coro
1110		1105
1111	BOOT:	1106	BOOT:
1112	{	1107	{
1113	int i;	1108	int i;
		1109
1114	HV *stash = gv_stashpv ("Coro", TRUE);	1110	coro_stash = gv_stashpv ("Coro", TRUE);
1115		1111
1116	newCONSTSUB (stash, "PRIO_MAX", newSViv (PRIO_MAX));	1112	newCONSTSUB (coro_stash, "PRIO_MAX", newSViv (PRIO_MAX));
1117	newCONSTSUB (stash, "PRIO_HIGH", newSViv (PRIO_HIGH));	1113	newCONSTSUB (coro_stash, "PRIO_HIGH", newSViv (PRIO_HIGH));
1118	newCONSTSUB (stash, "PRIO_NORMAL", newSViv (PRIO_NORMAL));	1114	newCONSTSUB (coro_stash, "PRIO_NORMAL", newSViv (PRIO_NORMAL));
1119	newCONSTSUB (stash, "PRIO_LOW", newSViv (PRIO_LOW));	1115	newCONSTSUB (coro_stash, "PRIO_LOW", newSViv (PRIO_LOW));
1120	newCONSTSUB (stash, "PRIO_IDLE", newSViv (PRIO_IDLE));	1116	newCONSTSUB (coro_stash, "PRIO_IDLE", newSViv (PRIO_IDLE));
1121	newCONSTSUB (stash, "PRIO_MIN", newSViv (PRIO_MIN));	1117	newCONSTSUB (coro_stash, "PRIO_MIN", newSViv (PRIO_MIN));
1122		1118
1123	coro_current = gv_fetchpv ("Coro::current", TRUE, SVt_PV);	1119	coro_current = gv_fetchpv ("Coro::current", TRUE, SVt_PV);
1124	coro_idle = gv_fetchpv ("Coro::idle" , TRUE, SVt_PV);	1120	coro_idle = gv_fetchpv ("Coro::idle" , TRUE, SVt_PV);
1125		1121
1126	for (i = PRIO_MAX - PRIO_MIN + 1; i--; )	1122	for (i = PRIO_MAX - PRIO_MIN + 1; i--; )
…		…
1139	sv_setiv (sv, (IV)&coroapi);	1135	sv_setiv (sv, (IV)&coroapi);
1140	SvREADONLY_on (sv);	1136	SvREADONLY_on (sv);
1141	}	1137	}
1142	}	1138	}
1143		1139
1144	#if !PERL_MICRO	1140	int
		1141	prio (Coro::State coro, int newprio = 0)
		1142	ALIAS:
		1143	nice = 1
		1144	CODE:
		1145	{
		1146	RETVAL = coro->prio;
		1147
		1148	if (items > 1)
		1149	{
		1150	if (ix)
		1151	newprio += coro->prio;
		1152
		1153	if (newprio < PRIO_MIN) newprio = PRIO_MIN;
		1154	if (newprio > PRIO_MAX) newprio = PRIO_MAX;
		1155
		1156	coro->prio = newprio;
		1157	}
		1158	}
1145		1159
1146	void	1160	void
1147	ready (self)	1161	ready (SV *self)
1148	SV * self
1149	PROTOTYPE: $	1162	PROTOTYPE: $
1150	CODE:	1163	CODE:
1151	api_ready (self);	1164	api_ready (self);
1152
1153	#endif
1154		1165
1155	int	1166	int
1156	nready (...)	1167	nready (...)
1157	PROTOTYPE:	1168	PROTOTYPE:
1158	CODE:	1169	CODE:
1159	RETVAL = coro_nready;	1170	RETVAL = coro_nready;
1160	OUTPUT:	1171	OUTPUT:
1161	RETVAL	1172	RETVAL
1162		1173
1163	void	1174	MODULE = Coro::State PACKAGE = Coro::AIO
1164	schedule (...)
1165	PROTOTYPE:
1166	CODE:
1167	api_schedule ();
1168		1175
1169	void
1170	cede (...)
1171	PROTOTYPE:
1172	CODE:
1173	api_cede ();
1174
1175	# and these are hacks
1176	SV *	1176	SV *
1177	_aio_get_state ()	1177	_get_state ()
1178	CODE:	1178	CODE:
1179	{	1179	{
1180	struct {	1180	struct {
1181	int errorno;	1181	int errorno;
1182	int laststype;	1182	int laststype;
…		…
1193	}	1193	}
1194	OUTPUT:	1194	OUTPUT:
1195	RETVAL	1195	RETVAL
1196		1196
1197	void	1197	void
1198	_aio_set_state (char *data_)	1198	_set_state (char *data_)
1199	PROTOTYPE: $	1199	PROTOTYPE: $
1200	CODE:	1200	CODE:
1201	{	1201	{
1202	struct {	1202	struct {
1203	int errorno;	1203	int errorno;

Diff Legend

–	Removed lines
+	Added lines
<	Changed lines
>	Changed lines