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

Comparing Coro/Coro/State.xs (file contents):
Revision 1.107 by root, Mon Nov 27 02:15:51 2006 UTC vs.
Revision 1.184 by root, Thu Oct 4 13:45:56 2007 UTC

…		…
1	#include "libcoro/coro.c"	1	#include "libcoro/coro.c"
		2
		3	#define PERL_NO_GET_CONTEXT
2		4
3	#include "EXTERN.h"	5	#include "EXTERN.h"
4	#include "perl.h"	6	#include "perl.h"
5	#include "XSUB.h"	7	#include "XSUB.h"
6		8
7	#include "patchlevel.h"	9	#include "patchlevel.h"
8		10
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)
20	# ifndef PL_ppaddr
21	# define PL_ppaddr ppaddr
22	# endif
23	# ifndef call_sv
24	# define call_sv perl_call_sv
25	# endif
26	# ifndef get_sv
27	# define get_sv perl_get_sv
28	# endif
29	# ifndef get_cv
30	# define get_cv perl_get_cv
31	# endif
32	# ifndef IS_PADGV
33	# define IS_PADGV(v) 0
34	# endif
35	# ifndef IS_PADCONST
36	# define IS_PADCONST(v) 0
37	# endif
38	#endif
39
40	#include <stdio.h>	11	#include <stdio.h>
41	#include <errno.h>	12	#include <errno.h>
42		13	#include <assert.h>
43	#if !__i386 && !__x86_64 && !__powerpc && !__m68k && !__alpha && !__mips && !__sparc64
44	# undef STACKGUARD
45	#endif
46
47	#ifndef STACKGUARD
48	# define STACKGUARD 0
49	#endif
50		14
51	#ifdef HAVE_MMAP	15	#ifdef HAVE_MMAP
52	# include <unistd.h>	16	# include <unistd.h>
53	# include <sys/mman.h>	17	# include <sys/mman.h>
54	# ifndef MAP_ANONYMOUS	18	# ifndef MAP_ANONYMOUS
69	#else	33	#else
70	# define PAGESIZE 0	34	# define PAGESIZE 0
71	# define BOOT_PAGESIZE (void)0	35	# define BOOT_PAGESIZE (void)0
72	#endif	36	#endif
73		37
74	/* The next macro should declare a variable stacklevel that contains and approximation	38	#if CORO_USE_VALGRIND
75	* to the current C stack pointer. Its property is that it changes with each call	39	# include <valgrind/valgrind.h>
76	* and should be unique. */	40	# define REGISTER_STACK(cctx,start,end) (cctx)->valgrind_id = VALGRIND_STACK_REGISTER ((start), (end))
		41	#else
		42	# define REGISTER_STACK(cctx,start,end)
		43	#endif
		44
		45	/* the maximum number of idle cctx that will be pooled */
		46	#define MAX_IDLE_CCTX 8
		47
		48	#define PERL_VERSION_ATLEAST(a,b,c) \
		49	(PERL_REVISION > (a) \
		50	\|\| (PERL_REVISION == (a) \
		51	&& (PERL_VERSION > (b) \
		52	\|\| (PERL_VERSION == (b) && PERLSUBVERSION >= (c)))))
		53
		54	#if !PERL_VERSION_ATLEAST (5,6,0)
		55	# ifndef PL_ppaddr
		56	# define PL_ppaddr ppaddr
		57	# endif
		58	# ifndef call_sv
		59	# define call_sv perl_call_sv
		60	# endif
		61	# ifndef get_sv
		62	# define get_sv perl_get_sv
		63	# endif
		64	# ifndef get_cv
		65	# define get_cv perl_get_cv
		66	# endif
		67	# ifndef IS_PADGV
		68	# define IS_PADGV(v) 0
		69	# endif
		70	# ifndef IS_PADCONST
		71	# define IS_PADCONST(v) 0
		72	# endif
		73	#endif
		74
		75	/* 5.8.7 */
		76	#ifndef SvRV_set
		77	# define SvRV_set(s,v) SvRV(s) = (v)
		78	#endif
		79
		80	#if !__i386 && !__x86_64 && !__powerpc && !__m68k && !__alpha && !__mips && !__sparc64
		81	# undef CORO_STACKGUARD
		82	#endif
		83
		84	#ifndef CORO_STACKGUARD
		85	# define CORO_STACKGUARD 0
		86	#endif
		87
		88	/* prefer perl internal functions over our own? */
		89	#ifndef CORO_PREFER_PERL_FUNCTIONS
		90	# define CORO_PREFER_PERL_FUNCTIONS 0
		91	#endif
		92
		93	/* The next macros try to return the current stack pointer, in an as
		94	* portable way as possible. */
77	#define dSTACKLEVEL int stacklevel	95	#define dSTACKLEVEL volatile char stacklevel
78	#define STACKLEVEL ((void *)&stacklevel)	96	#define STACKLEVEL ((void *)&stacklevel)
79		97
80	#define IN_DESTRUCT (PL_main_cv == Nullcv)	98	#define IN_DESTRUCT (PL_main_cv == Nullcv)
81		99
82	#if __GNUC__ >= 3	100	#if __GNUC__ >= 3
83	# define attribute(x) __attribute__(x)	101	# define attribute(x) __attribute__(x)
		102	# define BARRIER __asm__ __volatile__ ("" : : : "memory")
84	#else	103	#else
85	# define attribute(x)	104	# define attribute(x)
		105	# define BARRIER
86	#endif	106	#endif
87		107
88	#define NOINLINE attribute ((noinline))	108	#define NOINLINE attribute ((noinline))
89		109
90	#include "CoroAPI.h"	110	#include "CoroAPI.h"
91
92	#define TRANSFER_SET_STACKLEVEL 0x8bfbfbfb /* magic cookie */
93		111
94	#ifdef USE_ITHREADS	112	#ifdef USE_ITHREADS
95	static perl_mutex coro_mutex;	113	static perl_mutex coro_mutex;
96	# define LOCK do { MUTEX_LOCK (&coro_mutex); } while (0)	114	# define LOCK do { MUTEX_LOCK (&coro_mutex); } while (0)
97	# define UNLOCK do { MUTEX_UNLOCK (&coro_mutex); } while (0)	115	# define UNLOCK do { MUTEX_UNLOCK (&coro_mutex); } while (0)
98	#else	116	#else
99	# define LOCK (void)0	117	# define LOCK (void)0
100	# define UNLOCK (void)0	118	# define UNLOCK (void)0
101	#endif	119	#endif
102		120
		121	/* helper storage struct for Coro::AIO */
		122	struct io_state
		123	{
		124	int errorno;
		125	I32 laststype;
		126	int laststatval;
		127	Stat_t statcache;
		128	};
		129
		130	static size_t coro_stacksize = CORO_STACKSIZE;
103	static struct CoroAPI coroapi;	131	static struct CoroAPI coroapi;
104	static AV main_mainstack; / used to differentiate between $main and others */	132	static AV main_mainstack; / used to differentiate between $main and others */
		133	static JMPENV *main_top_env;
105	static HV coro_state_stash, coro_stash;	134	static HV coro_state_stash, coro_stash;
106	static SV coro_mortal; / will be freed after next transfer */	135	static SV coro_mortal; / will be freed after next transfer */
107		136
		137	static GV irsgv; / $/ */
		138
		139	/* async_pool helper stuff */
		140	static SV *sv_pool_rss;
		141	static SV *sv_pool_size;
		142	static AV *av_async_pool;
		143
108	static struct coro_cctx *cctx_first;	144	static struct coro_cctx *cctx_first;
109	static int cctx_count, cctx_idle;	145	static int cctx_count, cctx_idle;
		146
		147	enum {
		148	CC_MAPPED = 0x01,
		149	CC_NOREUSE = 0x02, /* throw this away after tracing */
		150	CC_TRACE = 0x04,
		151	CC_TRACE_SUB = 0x08, /* trace sub calls */
		152	CC_TRACE_LINE = 0x10, /* trace each statement */
		153	CC_TRACE_ALL = CC_TRACE_SUB \| CC_TRACE_LINE,
		154	};
110		155
111	/* this is a structure representing a c-level coroutine */	156	/* this is a structure representing a c-level coroutine */
112	typedef struct coro_cctx {	157	typedef struct coro_cctx {
113	struct coro_cctx *next;	158	struct coro_cctx *next;
114		159
115	/* the stack */	160	/* the stack */
116	void *sptr;	161	void *sptr;
117	long ssize; /* positive == mmap, otherwise malloc */	162	size_t ssize;
118		163
119	/* cpu state */	164	/* cpu state */
120	void idle_sp; / sp of top-level transfer/schedule/cede call */	165	void idle_sp; / sp of top-level transfer/schedule/cede call */
		166	JMPENV idle_te; / same as idle_sp, but for top_env, TODO: remove once stable */
121	JMPENV *top_env;	167	JMPENV *top_env;
122	coro_context cctx;	168	coro_context cctx;
123		169
124	#if USE_VALGRIND	170	#if CORO_USE_VALGRIND
125	int valgrind_id;	171	int valgrind_id;
126	#endif	172	#endif
		173	unsigned char flags;
127	} coro_cctx;	174	} coro_cctx;
		175
		176	enum {
		177	CF_RUNNING = 0x0001, /* coroutine is running */
		178	CF_READY = 0x0002, /* coroutine is ready */
		179	CF_NEW = 0x0004, /* has never been switched to */
		180	CF_DESTROYED = 0x0008, /* coroutine data has been freed */
		181	};
128		182
129	/* this is a structure representing a perl-level coroutine */	183	/* this is a structure representing a perl-level coroutine */
130	struct coro {	184	struct coro {
131	/* the c coroutine allocated to this perl coroutine, if any */	185	/* the c coroutine allocated to this perl coroutine, if any */
132	coro_cctx *cctx;	186	coro_cctx *cctx;
133		187
134	/* data associated with this coroutine (initial args) */	188	/* data associated with this coroutine (initial args) */
135	AV *args;	189	AV *args;
136	int refcnt;	190	int refcnt;
		191	int flags; /* CF_ flags */
137		192
138	/* optionally saved, might be zero */	193	/* optionally saved, might be zero */
139	AV *defav;	194	AV defav; / @_ */
140	SV *defsv;	195	SV defsv; / $_ */
141	SV *errsv;	196	SV errsv; / $@ */
		197	SV deffh; / default filehandle */
		198	SV irssv; / $/ */
		199	SV irssv_sv; / real $/ cache */
142		200
143	/* saved global state not related to stacks */	201	#define VAR(name,type) type name;
144	U8 dowarn;	202	# include "state.h"
145	I32 in_eval;	203	#undef VAR
146		204
147	/* the stacks and related info (callchain etc..) */	205	/* statistics */
148	PERL_SI *curstackinfo;	206	int usecount; /* number of transfers to this coro */
149	AV *curstack;
150	AV *mainstack;
151	SV **stack_sp;
152	OP *op;
153	SV **curpad;
154	AV *comppad;
155	CV *compcv;
156	SV **stack_base;
157	SV **stack_max;
158	SV **tmps_stack;
159	I32 tmps_floor;
160	I32 tmps_ix;
161	I32 tmps_max;
162	I32 *markstack;
163	I32 *markstack_ptr;
164	I32 *markstack_max;
165	I32 *scopestack;
166	I32 scopestack_ix;
167	I32 scopestack_max;
168	ANY *savestack;
169	I32 savestack_ix;
170	I32 savestack_max;
171	OP **retstack;
172	I32 retstack_ix;
173	I32 retstack_max;
174	PMOP *curpm;
175	COP *curcop;
176		207
177	/* coro process data */	208	/* coro process data */
178	int prio;	209	int prio;
		210	//SV *throw;
		211
		212	/* async_pool */
		213	SV *saved_deffh;
		214
		215	/* linked list */
		216	struct coro next, prev;
		217	HV hv; / the perl hash associated with this coro, if any */
179	};	218	};
180		219
181	typedef struct coro *Coro__State;	220	typedef struct coro *Coro__State;
182	typedef struct coro *Coro__State_or_hashref;	221	typedef struct coro *Coro__State_or_hashref;
183		222
		223	/ Coro ******************************************************************/
		224
		225	#define PRIO_MAX 3
		226	#define PRIO_HIGH 1
		227	#define PRIO_NORMAL 0
		228	#define PRIO_LOW -1
		229	#define PRIO_IDLE -3
		230	#define PRIO_MIN -4
		231
		232	/* for Coro.pm */
		233	static SV *coro_current;
		234	static AV *coro_ready [PRIO_MAX-PRIO_MIN+1];
		235	static int coro_nready;
		236	static struct coro *coro_first;
		237
		238	/ lowlevel stuff ********************************************************/
		239
184	static AV *	240	static AV *
185	coro_clone_padlist (CV *cv)	241	coro_clone_padlist (pTHX_ CV *cv)
186	{	242	{
187	AV *padlist = CvPADLIST (cv);	243	AV *padlist = CvPADLIST (cv);
188	AV newpadlist, newpad;	244	AV newpadlist, newpad;
189		245
190	newpadlist = newAV ();	246	newpadlist = newAV ();
…		…
202		258
203	return newpadlist;	259	return newpadlist;
204	}	260	}
205		261
206	static void	262	static void
207	free_padlist (AV *padlist)	263	free_padlist (pTHX_ AV *padlist)
208	{	264	{
209	/* may be during global destruction */	265	/* may be during global destruction */
210	if (SvREFCNT (padlist))	266	if (SvREFCNT (padlist))
211	{	267	{
212	I32 i = AvFILLp (padlist);	268	I32 i = AvFILLp (padlist);
…		…
233	AV *padlist;	289	AV *padlist;
234	AV av = (AV )mg->mg_obj;	290	AV av = (AV )mg->mg_obj;
235		291
236	/* casting is fun. */	292	/* casting is fun. */
237	while (&PL_sv_undef != (SV )(padlist = (AV )av_pop (av)))	293	while (&PL_sv_undef != (SV )(padlist = (AV )av_pop (av)))
238	free_padlist (padlist);	294	free_padlist (aTHX_ padlist);
239		295
240	SvREFCNT_dec (av);	296	SvREFCNT_dec (av);
241		297
242	return 0;	298	return 0;
243	}	299	}
244		300
245	#define PERL_MAGIC_coro PERL_MAGIC_ext	301	#define PERL_MAGIC_coro PERL_MAGIC_ext
246		302
247	static MGVTBL vtbl_coro = {0, 0, 0, 0, coro_cv_free};	303	static MGVTBL vtbl_coro = {0, 0, 0, 0, coro_cv_free};
248		304
		305	#define CORO_MAGIC(cv) \
		306	SvMAGIC (cv) \
		307	? SvMAGIC (cv)->mg_type == PERL_MAGIC_coro \
		308	? SvMAGIC (cv) \
		309	: mg_find ((SV *)cv, PERL_MAGIC_coro) \
		310	: 0
		311
		312	static struct coro *
		313	SvSTATE_ (pTHX_ SV *coro)
		314	{
		315	HV *stash;
		316	MAGIC *mg;
		317
		318	if (SvROK (coro))
		319	coro = SvRV (coro);
		320
		321	if (SvTYPE (coro) != SVt_PVHV)
		322	croak ("Coro::State object required");
		323
		324	stash = SvSTASH (coro);
		325	if (stash != coro_stash && stash != coro_state_stash)
		326	{
		327	/* very slow, but rare, check */
		328	if (!sv_derived_from (sv_2mortal (newRV_inc (coro)), "Coro::State"))
		329	croak ("Coro::State object required");
		330	}
		331
		332	mg = CORO_MAGIC (coro);
		333	return (struct coro *)mg->mg_ptr;
		334	}
		335
		336	#define SvSTATE(sv) SvSTATE_ (aTHX_ (sv))
		337
249	/* the next two functions merely cache the padlists */	338	/* the next two functions merely cache the padlists */
250	static void	339	static void
251	get_padlist (CV *cv)	340	get_padlist (pTHX_ CV *cv)
252	{	341	{
253	MAGIC mg = mg_find ((SV )cv, PERL_MAGIC_coro);	342	MAGIC *mg = CORO_MAGIC (cv);
		343	AV *av;
254		344
255	if (mg && AvFILLp ((AV *)mg->mg_obj) >= 0)	345	if (mg && AvFILLp ((av = (AV *)mg->mg_obj)) >= 0)
256	CvPADLIST (cv) = (AV )av_pop ((AV )mg->mg_obj);	346	CvPADLIST (cv) = (AV *)AvARRAY (av)[AvFILLp (av)--];
257	else	347	else
258	{	348	{
259	#if 0	349	#if CORO_PREFER_PERL_FUNCTIONS
260	/* this is probably cleaner, but also slower? */	350	/* this is probably cleaner, but also slower? */
261	CV *cp = Perl_cv_clone (cv);	351	CV *cp = Perl_cv_clone (cv);
262	CvPADLIST (cv) = CvPADLIST (cp);	352	CvPADLIST (cv) = CvPADLIST (cp);
263	CvPADLIST (cp) = 0;	353	CvPADLIST (cp) = 0;
264	SvREFCNT_dec (cp);	354	SvREFCNT_dec (cp);
265	#else	355	#else
266	CvPADLIST (cv) = coro_clone_padlist (cv);	356	CvPADLIST (cv) = coro_clone_padlist (aTHX_ cv);
267	#endif	357	#endif
268	}	358	}
269	}	359	}
270		360
271	static void	361	static void
272	put_padlist (CV *cv)	362	put_padlist (pTHX_ CV *cv)
273	{	363	{
274	MAGIC mg = mg_find ((SV )cv, PERL_MAGIC_coro);	364	MAGIC *mg = CORO_MAGIC (cv);
		365	AV *av;
275		366
276	if (!mg)	367	if (!mg)
277	{	368	{
278	sv_magic ((SV *)cv, 0, PERL_MAGIC_coro, 0, 0);	369	sv_magic ((SV *)cv, 0, PERL_MAGIC_coro, 0, 0);
279	mg = mg_find ((SV *)cv, PERL_MAGIC_coro);	370	mg = mg_find ((SV *)cv, PERL_MAGIC_coro);
280	mg->mg_virtual = &vtbl_coro;	371	mg->mg_virtual = &vtbl_coro;
281	mg->mg_obj = (SV *)newAV ();	372	mg->mg_obj = (SV *)newAV ();
282	}	373	}
283		374
284	av_push ((AV )mg->mg_obj, (SV )CvPADLIST (cv));	375	av = (AV *)mg->mg_obj;
285	}
286		376
287	#define SB do {	377	if (AvFILLp (av) >= AvMAX (av))
288	#define SE } while (0)	378	av_extend (av, AvMAX (av) + 1);
289		379
290	#define LOAD(state) load_state((state));	380	AvARRAY (av)[++AvFILLp (av)] = (SV *)CvPADLIST (cv);
291	#define SAVE(state,flags) save_state((state),(flags));	381	}
292		382
293	#define REPLACE_SV(sv,val) SB SvREFCNT_dec(sv); (sv) = (val); (val) = 0; SE	383	/ load & save, init *****************************************************/
294		384
295	static void	385	static void
296	load_state(Coro__State c)	386	load_perl (pTHX_ Coro__State c)
297	{	387	{
298	PL_dowarn = c->dowarn;	388	#define VAR(name,type) PL_ ## name = c->name;
299	PL_in_eval = c->in_eval;	389	# include "state.h"
		390	#undef VAR
300		391
301	PL_curstackinfo = c->curstackinfo;	392	GvSV (PL_defgv) = c->defsv;
302	PL_curstack = c->curstack;	393	GvAV (PL_defgv) = c->defav;
303	PL_mainstack = c->mainstack;	394	GvSV (PL_errgv) = c->errsv;
304	PL_stack_sp = c->stack_sp;	395	GvSV (irsgv) = c->irssv_sv;
305	PL_op = c->op;
306	PL_curpad = c->curpad;
307	PL_comppad = c->comppad;
308	PL_compcv = c->compcv;
309	PL_stack_base = c->stack_base;
310	PL_stack_max = c->stack_max;
311	PL_tmps_stack = c->tmps_stack;
312	PL_tmps_floor = c->tmps_floor;
313	PL_tmps_ix = c->tmps_ix;
314	PL_tmps_max = c->tmps_max;
315	PL_markstack = c->markstack;
316	PL_markstack_ptr = c->markstack_ptr;
317	PL_markstack_max = c->markstack_max;
318	PL_scopestack = c->scopestack;
319	PL_scopestack_ix = c->scopestack_ix;
320	PL_scopestack_max = c->scopestack_max;
321	PL_savestack = c->savestack;
322	PL_savestack_ix = c->savestack_ix;
323	PL_savestack_max = c->savestack_max;
324	#if !PERL_VERSION_ATLEAST (5,9,0)
325	PL_retstack = c->retstack;
326	PL_retstack_ix = c->retstack_ix;
327	PL_retstack_max = c->retstack_max;
328	#endif
329	PL_curpm = c->curpm;
330	PL_curcop = c->curcop;
331
332	if (c->defav) REPLACE_SV (GvAV (PL_defgv), c->defav);
333	if (c->defsv) REPLACE_SV (DEFSV , c->defsv);
334	if (c->errsv) REPLACE_SV (ERRSV , c->errsv);
335		396
336	{	397	{
337	dSP;	398	dSP;
338	CV *cv;	399	CV *cv;
339		400
340	/* now do the ugly restore mess */	401	/* now do the ugly restore mess */
341	while ((cv = (CV *)POPs))	402	while ((cv = (CV *)POPs))
342	{	403	{
343	AV padlist = (AV )POPs;
344
345	if (padlist)
346	{
347	put_padlist (cv); /* mark this padlist as available */	404	put_padlist (aTHX_ cv); /* mark this padlist as available */
348	CvPADLIST(cv) = padlist;	405	CvDEPTH (cv) = PTR2IV (POPs);
349	}	406	CvPADLIST (cv) = (AV *)POPs;
350
351	++CvDEPTH(cv);
352	}	407	}
353		408
354	PUTBACK;	409	PUTBACK;
355	}	410	}
356	}	411	}
357		412
358	static void	413	static void
359	save_state(Coro__State c, int flags)	414	save_perl (pTHX_ Coro__State c)
360	{	415	{
361	{	416	{
362	dSP;	417	dSP;
363	I32 cxix = cxstack_ix;	418	I32 cxix = cxstack_ix;
364	PERL_CONTEXT *ccstk = cxstack;	419	PERL_CONTEXT *ccstk = cxstack;
…		…
367	/*	422	/*
368	* the worst thing you can imagine happens first - we have to save	423	* the worst thing you can imagine happens first - we have to save
369	* (and reinitialize) all cv's in the whole callchain :(	424	* (and reinitialize) all cv's in the whole callchain :(
370	*/	425	*/
371		426
372	PUSHs (Nullsv);	427	XPUSHs (Nullsv);
373	/* this loop was inspired by pp_caller */	428	/* this loop was inspired by pp_caller */
374	for (;;)	429	for (;;)
375	{	430	{
376	while (cxix >= 0)	431	while (cxix >= 0)
377	{	432	{
378	PERL_CONTEXT *cx = &ccstk[cxix--];	433	PERL_CONTEXT *cx = &ccstk[cxix--];
379		434
380	if (CxTYPE(cx) == CXt_SUB)	435	if (CxTYPE (cx) == CXt_SUB \|\| CxTYPE (cx) == CXt_FORMAT)
381	{	436	{
382	CV *cv = cx->blk_sub.cv;	437	CV *cv = cx->blk_sub.cv;
		438
383	if (CvDEPTH(cv))	439	if (CvDEPTH (cv))
384	{	440	{
385	EXTEND (SP, CvDEPTH(cv)*2);	441	EXTEND (SP, 3);
386
387	while (--CvDEPTH(cv))
388	{
389	/* this tells the restore code to increment CvDEPTH */
390	PUSHs (Nullsv);
391	PUSHs ((SV *)cv);
392	}
393
394	PUSHs ((SV *)CvPADLIST(cv));	442	PUSHs ((SV *)CvPADLIST (cv));
		443	PUSHs (INT2PTR (SV *, CvDEPTH (cv)));
395	PUSHs ((SV *)cv);	444	PUSHs ((SV *)cv);
396		445
		446	CvDEPTH (cv) = 0;
397	get_padlist (cv);	447	get_padlist (aTHX_ cv);
398	}	448	}
399	}	449	}
400	#ifdef CXt_FORMAT
401	else if (CxTYPE(cx) == CXt_FORMAT)
402	{
403	/* I never used formats, so how should I know how these are implemented? */
404	/* my bold guess is as a simple, plain sub... */
405	croak ("CXt_FORMAT not yet handled. Don't switch coroutines from within formats");
406	}
407	#endif
408	}	450	}
409		451
410	if (top_si->si_type == PERLSI_MAIN)	452	if (top_si->si_type == PERLSI_MAIN)
411	break;	453	break;
412		454
413	top_si = top_si->si_prev;	455	top_si = top_si->si_prev;
414	ccstk = top_si->si_cxstack;	456	ccstk = top_si->si_cxstack;
415	cxix = top_si->si_cxix;	457	cxix = top_si->si_cxix;
416	}	458	}
417		459
418	PUTBACK;	460	PUTBACK;
419	}	461	}
420		462
421	c->defav = flags & TRANSFER_SAVE_DEFAV ? (AV *)SvREFCNT_inc (GvAV (PL_defgv)) : 0;	463	c->defav = GvAV (PL_defgv);
422	c->defsv = flags & TRANSFER_SAVE_DEFSV ? SvREFCNT_inc (DEFSV) : 0;	464	c->defsv = DEFSV;
423	c->errsv = flags & TRANSFER_SAVE_ERRSV ? SvREFCNT_inc (ERRSV) : 0;	465	c->errsv = ERRSV;
		466	c->irssv_sv = GvSV (irsgv);
424		467
425	c->dowarn = PL_dowarn;	468	#define VAR(name,type)c->name = PL_ ## name;
426	c->in_eval = PL_in_eval;	469	# include "state.h"
427		470	#undef VAR
428	c->curstackinfo = PL_curstackinfo;
429	c->curstack = PL_curstack;
430	c->mainstack = PL_mainstack;
431	c->stack_sp = PL_stack_sp;
432	c->op = PL_op;
433	c->curpad = PL_curpad;
434	c->comppad = PL_comppad;
435	c->compcv = PL_compcv;
436	c->stack_base = PL_stack_base;
437	c->stack_max = PL_stack_max;
438	c->tmps_stack = PL_tmps_stack;
439	c->tmps_floor = PL_tmps_floor;
440	c->tmps_ix = PL_tmps_ix;
441	c->tmps_max = PL_tmps_max;
442	c->markstack = PL_markstack;
443	c->markstack_ptr = PL_markstack_ptr;
444	c->markstack_max = PL_markstack_max;
445	c->scopestack = PL_scopestack;
446	c->scopestack_ix = PL_scopestack_ix;
447	c->scopestack_max = PL_scopestack_max;
448	c->savestack = PL_savestack;
449	c->savestack_ix = PL_savestack_ix;
450	c->savestack_max = PL_savestack_max;
451	#if !PERL_VERSION_ATLEAST (5,9,0)
452	c->retstack = PL_retstack;
453	c->retstack_ix = PL_retstack_ix;
454	c->retstack_max = PL_retstack_max;
455	#endif
456	c->curpm = PL_curpm;
457	c->curcop = PL_curcop;
458	}	471	}
459		472
460	/*	473	/*
461	* allocate various perl stacks. This is an exact copy	474	* allocate various perl stacks. This is an exact copy
462	* of perl.c:init_stacks, except that it uses less memory	475	* of perl.c:init_stacks, except that it uses less memory
463	* on the (sometimes correct) assumption that coroutines do	476	* on the (sometimes correct) assumption that coroutines do
464	* not usually need a lot of stackspace.	477	* not usually need a lot of stackspace.
465	*/	478	*/
		479	#if CORO_PREFER_PERL_FUNCTIONS
		480	# define coro_init_stacks init_stacks
		481	#else
466	static void	482	static void
467	coro_init_stacks ()	483	coro_init_stacks (pTHX)
468	{	484	{
469	PL_curstackinfo = new_stackinfo(96, 1024/sizeof(PERL_CONTEXT) - 1);	485	PL_curstackinfo = new_stackinfo(64, 6);
470	PL_curstackinfo->si_type = PERLSI_MAIN;	486	PL_curstackinfo->si_type = PERLSI_MAIN;
471	PL_curstack = PL_curstackinfo->si_stack;	487	PL_curstack = PL_curstackinfo->si_stack;
472	PL_mainstack = PL_curstack; /* remember in case we switch stacks */	488	PL_mainstack = PL_curstack; /* remember in case we switch stacks */
473		489
474	PL_stack_base = AvARRAY(PL_curstack);	490	PL_stack_base = AvARRAY(PL_curstack);
475	PL_stack_sp = PL_stack_base;	491	PL_stack_sp = PL_stack_base;
476	PL_stack_max = PL_stack_base + AvMAX(PL_curstack);	492	PL_stack_max = PL_stack_base + AvMAX(PL_curstack);
477		493
478	New(50,PL_tmps_stack,96,SV*);	494	New(50,PL_tmps_stack,64,SV*);
479	PL_tmps_floor = -1;	495	PL_tmps_floor = -1;
480	PL_tmps_ix = -1;	496	PL_tmps_ix = -1;
481	PL_tmps_max = 96;	497	PL_tmps_max = 64;
482		498
483	New(54,PL_markstack,16,I32);	499	New(54,PL_markstack,16,I32);
484	PL_markstack_ptr = PL_markstack;	500	PL_markstack_ptr = PL_markstack;
485	PL_markstack_max = PL_markstack + 16;	501	PL_markstack_max = PL_markstack + 16;
486		502
…		…
490		506
491	New(54,PL_scopestack,16,I32);	507	New(54,PL_scopestack,16,I32);
492	PL_scopestack_ix = 0;	508	PL_scopestack_ix = 0;
493	PL_scopestack_max = 16;	509	PL_scopestack_max = 16;
494		510
495	New(54,PL_savestack,96,ANY);	511	New(54,PL_savestack,64,ANY);
496	PL_savestack_ix = 0;	512	PL_savestack_ix = 0;
497	PL_savestack_max = 96;	513	PL_savestack_max = 64;
498		514
499	#if !PERL_VERSION_ATLEAST (5,9,0)	515	#if !PERL_VERSION_ATLEAST (5,9,0)
500	New(54,PL_retstack,8,OP*);	516	New(54,PL_retstack,4,OP*);
501	PL_retstack_ix = 0;	517	PL_retstack_ix = 0;
502	PL_retstack_max = 8;	518	PL_retstack_max = 4;
503	#endif	519	#endif
504	}	520	}
		521	#endif
505		522
506	/*	523	/*
507	* destroy the stacks, the callchain etc...	524	* destroy the stacks, the callchain etc...
508	*/	525	*/
509	static void	526	static void
510	coro_destroy_stacks ()	527	coro_destroy_stacks (pTHX)
511	{	528	{
512	if (!IN_DESTRUCT)
513	{
514	/* is this ugly, I ask? */
515	LEAVE_SCOPE (0);
516
517	/* sure it is, but more important: is it correct?? :/ */
518	FREETMPS;
519
520	/POPSTACK_TO (PL_mainstack);//D//use/
521	}
522
523	while (PL_curstackinfo->si_next)	529	while (PL_curstackinfo->si_next)
524	PL_curstackinfo = PL_curstackinfo->si_next;	530	PL_curstackinfo = PL_curstackinfo->si_next;
525		531
526	while (PL_curstackinfo)	532	while (PL_curstackinfo)
527	{	533	{
528	PERL_SI *p = PL_curstackinfo->si_prev;	534	PERL_SI *p = PL_curstackinfo->si_prev;
529		535
530	{ /D//remove/
531	dSP;
532	SWITCHSTACK (PL_curstack, PL_curstackinfo->si_stack);
533	PUTBACK; /* possibly superfluous */
534	}
535
536	if (!IN_DESTRUCT)	536	if (!IN_DESTRUCT)
537	{
538	dounwind (-1);/D//remove/
539	SvREFCNT_dec (PL_curstackinfo->si_stack);	537	SvREFCNT_dec (PL_curstackinfo->si_stack);
540	}
541		538
542	Safefree (PL_curstackinfo->si_cxstack);	539	Safefree (PL_curstackinfo->si_cxstack);
543	Safefree (PL_curstackinfo);	540	Safefree (PL_curstackinfo);
544	PL_curstackinfo = p;	541	PL_curstackinfo = p;
545	}	542	}
…		…
551	#if !PERL_VERSION_ATLEAST (5,9,0)	548	#if !PERL_VERSION_ATLEAST (5,9,0)
552	Safefree (PL_retstack);	549	Safefree (PL_retstack);
553	#endif	550	#endif
554	}	551	}
555		552
556	static void	553	static size_t
557	setup_coro (struct coro *coro)	554	coro_rss (pTHX_ struct coro *coro)
		555	{
		556	size_t rss = sizeof (*coro);
		557
		558	if (coro->mainstack)
		559	{
		560	if (coro->flags & CF_RUNNING)
		561	{
		562	#define VAR(name,type)coro->name = PL_ ## name;
		563	# include "state.h"
		564	#undef VAR
		565	}
		566
		567	rss += sizeof (coro->curstackinfo);
		568	rss += sizeof (struct xpvav) + (1 + AvFILL (coro->curstackinfo->si_stack)) * sizeof (SV *);
		569	rss += (coro->curstackinfo->si_cxmax + 1) * sizeof (PERL_CONTEXT);
		570	rss += sizeof (struct xpvav) + (1 + AvFILL (coro->curstack)) * sizeof (SV *);
		571	rss += coro->tmps_max * sizeof (SV *);
		572	rss += (coro->markstack_max - coro->markstack_ptr) * sizeof (I32);
		573	rss += coro->scopestack_max * sizeof (I32);
		574	rss += coro->savestack_max * sizeof (ANY);
		575
		576	#if !PERL_VERSION_ATLEAST (5,9,0)
		577	rss += coro->retstack_max * sizeof (OP *);
		578	#endif
		579	}
		580
		581	return rss;
		582	}
		583
		584	/ coroutine stack handling **********************************************/
		585
		586	static void
		587	coro_setup (pTHX_ struct coro *coro)
558	{	588	{
559	/*	589	/*
560	* emulate part of the perl startup here.	590	* emulate part of the perl startup here.
561	*/	591	*/
562
563	coro_init_stacks ();	592	coro_init_stacks (aTHX);
564		593
		594	PL_runops = RUNOPS_DEFAULT;
		595	PL_curcop = &PL_compiling;
		596	PL_in_eval = EVAL_NULL;
565	PL_curcop = 0;	597	PL_comppad = 0;
566	PL_in_eval = 0;
567	PL_curpm = 0;	598	PL_curpm = 0;
		599	PL_localizing = 0;
		600	PL_dirty = 0;
		601	PL_restartop = 0;
		602
		603	GvSV (PL_defgv) = NEWSV (0, 0);
		604	GvAV (PL_defgv) = coro->args; coro->args = 0;
		605	GvSV (PL_errgv) = NEWSV (0, 0);
		606	GvSV (irsgv) = newSVpvn ("\n", 1); sv_magic (GvSV (irsgv), (SV *)irsgv, PERL_MAGIC_sv, "/", 0);
		607	PL_rs = newSVsv (GvSV (irsgv));
		608
		609	{
		610	IO *io = newIO ();
		611	PL_defoutgv = newGVgen ("Coro");
		612	GvIOp(PL_defoutgv) = io;
		613	IoTYPE (io) = IoTYPE_WRONLY;
		614	IoOFP (io) = IoIFP (io) = PerlIO_stdout ();
		615	IoFLAGS (io) \|= IOf_FLUSH;
		616	}
568		617
569	{	618	{
570	dSP;	619	dSP;
571	LOGOP myop;	620	LOGOP myop;
572		621
573	/* I have no idea why this is needed, but it is */
574	PUSHMARK (SP);
575
576	SvREFCNT_dec (GvAV (PL_defgv));
577	GvAV (PL_defgv) = coro->args; coro->args = 0;
578
579	Zero (&myop, 1, LOGOP);	622	Zero (&myop, 1, LOGOP);
580	myop.op_next = Nullop;	623	myop.op_next = Nullop;
581	myop.op_flags = OPf_WANT_VOID;	624	myop.op_flags = OPf_WANT_VOID;
582		625
		626	PUSHMARK (SP);
		627	XPUSHs (av_shift (GvAV (PL_defgv)));
		628	PUTBACK;
583	PL_op = (OP *)&myop;	629	PL_op = (OP *)&myop;
584
585	PUSHMARK (SP);
586	XPUSHs ((SV *)get_cv ("Coro::State::_coro_init", FALSE));
587	PUTBACK;
588	PL_op = PL_ppaddr[OP_ENTERSUB](aTHX);	630	PL_op = PL_ppaddr[OP_ENTERSUB](aTHX);
589	SPAGAIN;	631	SPAGAIN;
590
591	ENTER; /* necessary e.g. for dounwind */
592	}	632	}
593	}
594		633
		634	ENTER; /* necessary e.g. for dounwind */
		635	}
		636
595	static void	637	static void
		638	coro_destroy (pTHX_ struct coro *coro)
		639	{
		640	if (!IN_DESTRUCT)
		641	{
		642	/* restore all saved variables and stuff */
		643	LEAVE_SCOPE (0);
		644	assert (PL_tmps_floor == -1);
		645
		646	/* free all temporaries */
		647	FREETMPS;
		648	assert (PL_tmps_ix == -1);
		649
		650	/* unwind all extra stacks */
		651	POPSTACK_TO (PL_mainstack);
		652
		653	/* unwind main stack */
		654	dounwind (-1);
		655	}
		656
		657	SvREFCNT_dec (GvSV (PL_defgv));
		658	SvREFCNT_dec (GvAV (PL_defgv));
		659	SvREFCNT_dec (GvSV (PL_errgv));
		660	SvREFCNT_dec (PL_defoutgv);
		661	SvREFCNT_dec (PL_rs);
		662	SvREFCNT_dec (GvSV (irsgv));
		663
		664	SvREFCNT_dec (coro->saved_deffh);
		665	//SvREFCNT_dec (coro->throw);
		666
		667	coro_destroy_stacks (aTHX);
		668	}
		669
		670	static void
596	free_coro_mortal ()	671	free_coro_mortal (pTHX)
597	{	672	{
598	if (coro_mortal)	673	if (coro_mortal)
599	{	674	{
600	SvREFCNT_dec (coro_mortal);	675	SvREFCNT_dec (coro_mortal);
601	coro_mortal = 0;	676	coro_mortal = 0;
602	}	677	}
603	}	678	}
604		679
		680	static int
		681	runops_trace (pTHX)
		682	{
		683	COP *oldcop = 0;
		684	int oldcxix = -2;
		685	struct coro coro = SvSTATE (coro_current); / trace cctx is tied to specific coro */
		686	coro_cctx *cctx = coro->cctx;
		687
		688	while ((PL_op = CALL_FPTR (PL_op->op_ppaddr) (aTHX)))
		689	{
		690	PERL_ASYNC_CHECK ();
		691
		692	if (cctx->flags & CC_TRACE_ALL)
		693	{
		694	if (PL_op->op_type == OP_LEAVESUB && cctx->flags & CC_TRACE_SUB)
		695	{
		696	PERL_CONTEXT *cx = &cxstack[cxstack_ix];
		697	SV bot, top;
		698	AV av = newAV (); / return values */
		699	SV **cb;
		700	dSP;
		701
		702	GV *gv = CvGV (cx->blk_sub.cv);
		703	SV *fullname = sv_2mortal (newSV (0));
		704	if (isGV (gv))
		705	gv_efullname3 (fullname, gv, 0);
		706
		707	bot = PL_stack_base + cx->blk_oldsp + 1;
		708	top = cx->blk_gimme == G_ARRAY ? SP + 1
		709	: cx->blk_gimme == G_SCALAR ? bot + 1
		710	: bot;
		711
		712	while (bot < top)
		713	av_push (av, SvREFCNT_inc (*bot++));
		714
		715	PL_runops = RUNOPS_DEFAULT;
		716	ENTER;
		717	SAVETMPS;
		718	EXTEND (SP, 3);
		719	PUSHMARK (SP);
		720	PUSHs (&PL_sv_no);
		721	PUSHs (fullname);
		722	PUSHs (sv_2mortal (newRV_noinc ((SV *)av)));
		723	PUTBACK;
		724	cb = hv_fetch ((HV *)SvRV (coro_current), "_trace_sub_cb", sizeof ("_trace_sub_cb") - 1, 0);
		725	if (cb) call_sv (*cb, G_KEEPERR \| G_EVAL \| G_VOID \| G_DISCARD);
		726	SPAGAIN;
		727	FREETMPS;
		728	LEAVE;
		729	PL_runops = runops_trace;
		730	}
		731
		732	if (oldcop != PL_curcop)
		733	{
		734	oldcop = PL_curcop;
		735
		736	if (PL_curcop != &PL_compiling)
		737	{
		738	SV **cb;
		739
		740	if (oldcxix != cxstack_ix && cctx->flags & CC_TRACE_SUB)
		741	{
		742	PERL_CONTEXT *cx = &cxstack[cxstack_ix];
		743
		744	if (CxTYPE (cx) == CXt_SUB && oldcxix < cxstack_ix)
		745	{
		746	runops_proc_t old_runops = PL_runops;
		747	dSP;
		748	GV *gv = CvGV (cx->blk_sub.cv);
		749	SV *fullname = sv_2mortal (newSV (0));
		750
		751	if (isGV (gv))
		752	gv_efullname3 (fullname, gv, 0);
		753
		754	PL_runops = RUNOPS_DEFAULT;
		755	ENTER;
		756	SAVETMPS;
		757	EXTEND (SP, 3);
		758	PUSHMARK (SP);
		759	PUSHs (&PL_sv_yes);
		760	PUSHs (fullname);
		761	PUSHs (cx->blk_sub.hasargs ? sv_2mortal (newRV_inc ((SV *)cx->blk_sub.argarray)) : &PL_sv_undef);
		762	PUTBACK;
		763	cb = hv_fetch ((HV *)SvRV (coro_current), "_trace_sub_cb", sizeof ("_trace_sub_cb") - 1, 0);
		764	if (cb) call_sv (*cb, G_KEEPERR \| G_EVAL \| G_VOID \| G_DISCARD);
		765	SPAGAIN;
		766	FREETMPS;
		767	LEAVE;
		768	PL_runops = runops_trace;
		769	}
		770
		771	oldcxix = cxstack_ix;
		772	}
		773
		774	if (cctx->flags & CC_TRACE_LINE)
		775	{
		776	dSP;
		777
		778	PL_runops = RUNOPS_DEFAULT;
		779	ENTER;
		780	SAVETMPS;
		781	EXTEND (SP, 3);
		782	PL_runops = RUNOPS_DEFAULT;
		783	PUSHMARK (SP);
		784	PUSHs (sv_2mortal (newSVpv (OutCopFILE (oldcop), 0)));
		785	PUSHs (sv_2mortal (newSViv (CopLINE (oldcop))));
		786	PUTBACK;
		787	cb = hv_fetch ((HV *)SvRV (coro_current), "_trace_line_cb", sizeof ("_trace_line_cb") - 1, 0);
		788	if (cb) call_sv (*cb, G_KEEPERR \| G_EVAL \| G_VOID \| G_DISCARD);
		789	SPAGAIN;
		790	FREETMPS;
		791	LEAVE;
		792	PL_runops = runops_trace;
		793	}
		794	}
		795	}
		796	}
		797	}
		798
		799	TAINT_NOT;
		800	return 0;
		801	}
		802
		803	/* inject a fake call to Coro::State::_cctx_init into the execution */
		804	/* _cctx_init should be careful, as it could be called at almost any time */
		805	/* during execution of a perl program */
605	static void NOINLINE	806	static void NOINLINE
606	prepare_cctx (coro_cctx *cctx)	807	prepare_cctx (pTHX_ coro_cctx *cctx)
607	{	808	{
608	dSP;	809	dSP;
609	LOGOP myop;	810	LOGOP myop;
610		811
		812	PL_top_env = &PL_start_env;
		813
		814	if (cctx->flags & CC_TRACE)
		815	PL_runops = runops_trace;
		816
611	Zero (&myop, 1, LOGOP);	817	Zero (&myop, 1, LOGOP);
612	myop.op_next = PL_op;	818	myop.op_next = PL_op;
613	myop.op_flags = OPf_WANT_VOID;	819	myop.op_flags = OPf_WANT_VOID \| OPf_STACKED;
614
615	sv_setiv (get_sv ("Coro::State::_cctx", FALSE), PTR2IV (cctx));
616		820
617	PUSHMARK (SP);	821	PUSHMARK (SP);
		822	EXTEND (SP, 2);
		823	PUSHs (sv_2mortal (newSViv (PTR2IV (cctx))));
618	XPUSHs ((SV *)get_cv ("Coro::State::_cctx_init", FALSE));	824	PUSHs ((SV *)get_cv ("Coro::State::_cctx_init", FALSE));
619	PUTBACK;	825	PUTBACK;
		826	PL_op = (OP *)&myop;
620	PL_restartop = PL_ppaddr[OP_ENTERSUB](aTHX);	827	PL_op = PL_ppaddr[OP_ENTERSUB](aTHX);
621	SPAGAIN;	828	SPAGAIN;
622	}	829	}
623		830
		831	/*
		832	* this is a _very_ stripped down perl interpreter ;)
		833	*/
624	static void	834	static void
625	coro_run (void *arg)	835	coro_run (void *arg)
626	{	836	{
		837	dTHX;
		838
627	/* coro_run is the alternative epilogue of transfer() */	839	/* coro_run is the alternative tail of transfer(), so unlock here. */
628	UNLOCK;	840	UNLOCK;
629		841
		842	/* we now skip the entersub that lead to transfer() */
		843	PL_op = PL_op->op_next;
		844
		845	/* inject a fake subroutine call to cctx_init */
		846	prepare_cctx (aTHX_ (coro_cctx *)arg);
		847
		848	/* somebody or something will hit me for both perl_run and PL_restartop */
		849	PL_restartop = PL_op;
		850	perl_run (PL_curinterp);
		851
630	/*	852	/*
631	* this is a _very_ stripped down perl interpreter ;)	853	* If perl-run returns we assume exit() was being called or the coro
		854	* fell off the end, which seems to be the only valid (non-bug)
		855	* reason for perl_run to return. We try to exit by jumping to the
		856	* bootstrap-time "top" top_env, as we cannot restore the "main"
		857	* coroutine as Coro has no such concept
632	*/	858	*/
633	PL_top_env = &PL_start_env;	859	PL_top_env = main_top_env;
634		860	JMPENV_JUMP (2); /* I do not feel well about the hardcoded 2 at all */
635	/* inject call to cctx_init */
636	prepare_cctx ((coro_cctx *)arg);
637
638	/* somebody will hit me for both perl_run and PL_restartop */
639	perl_run (PL_curinterp);
640
641	fputs ("FATAL: C coroutine fell over the edge of the world, aborting. Did you call exit in a coroutine?\n", stderr);
642	abort ();
643	}	861	}
644		862
645	static coro_cctx *	863	static coro_cctx *
646	cctx_new ()	864	cctx_new ()
647	{	865	{
648	coro_cctx *cctx;	866	coro_cctx *cctx;
		867	void *stack_start;
		868	size_t stack_size;
649		869
650	++cctx_count;	870	++cctx_count;
651		871
652	New (0, cctx, 1, coro_cctx);	872	Newz (0, cctx, 1, coro_cctx);
653		873
654	#if HAVE_MMAP	874	#if HAVE_MMAP
655		875
656	cctx->ssize = ((STACKSIZE * sizeof (long) + PAGESIZE - 1) / PAGESIZE + STACKGUARD) * PAGESIZE;	876	cctx->ssize = ((coro_stacksize * sizeof (long) + PAGESIZE - 1) / PAGESIZE + CORO_STACKGUARD) * PAGESIZE;
657	/* mmap suppsedly does allocate-on-write for us */	877	/* mmap supposedly does allocate-on-write for us */
658	cctx->sptr = mmap (0, cctx->ssize, PROT_EXEC\|PROT_READ\|PROT_WRITE, MAP_PRIVATE\|MAP_ANONYMOUS, 0, 0);	878	cctx->sptr = mmap (0, cctx->ssize, PROT_EXEC\|PROT_READ\|PROT_WRITE, MAP_PRIVATE\|MAP_ANONYMOUS, 0, 0);
659		879
660	if (cctx->sptr == (void *)-1)	880	if (cctx->sptr != (void *)-1)
661	{
662	perror ("FATAL: unable to mmap stack for coroutine");
663	_exit (EXIT_FAILURE);
664	}	881	{
665
666	# if STACKGUARD	882	# if CORO_STACKGUARD
667	mprotect (cctx->sptr, STACKGUARD * PAGESIZE, PROT_NONE);	883	mprotect (cctx->sptr, CORO_STACKGUARD * PAGESIZE, PROT_NONE);
668	# endif	884	# endif
		885	stack_start = CORO_STACKGUARD * PAGESIZE + (char *)cctx->sptr;
		886	stack_size = cctx->ssize - CORO_STACKGUARD * PAGESIZE;
		887	cctx->flags \|= CC_MAPPED;
		888	}
		889	else
		890	#endif
		891	{
		892	cctx->ssize = coro_stacksize * (long)sizeof (long);
		893	New (0, cctx->sptr, coro_stacksize, long);
669		894
670	#else
671
672	cctx->ssize = STACKSIZE * (long)sizeof (long);
673	New (0, cctx->sptr, STACKSIZE, long);
674
675	if (!cctx->sptr)	895	if (!cctx->sptr)
676	{	896	{
677	perror ("FATAL: unable to malloc stack for coroutine");	897	perror ("FATAL: unable to allocate stack for coroutine");
678	_exit (EXIT_FAILURE);	898	_exit (EXIT_FAILURE);
679	}	899	}
680		900
681	#endif	901	stack_start = cctx->sptr;
		902	stack_size = cctx->ssize;
		903	}
682		904
683	#if USE_VALGRIND	905	REGISTER_STACK (cctx, (char )stack_start, (char )stack_start + stack_size);
684	cctx->valgrind_id = VALGRIND_STACK_REGISTER (
685	STACKGUARD * PAGESIZE + (char *)cctx->sptr,
686	cctx->ssize + (char *)cctx->sptr
687	);
688	#endif
689
690	coro_create (&cctx->cctx, coro_run, (void *)cctx, cctx->sptr, cctx->ssize);	906	coro_create (&cctx->cctx, coro_run, (void *)cctx, stack_start, stack_size);
691		907
692	return cctx;	908	return cctx;
693	}	909	}
694		910
695	static void	911	static void
696	cctx_free (coro_cctx *cctx)	912	cctx_destroy (coro_cctx *cctx)
697	{	913	{
698	if (!cctx)	914	if (!cctx)
699	return;	915	return;
700		916
701	--cctx_count;	917	--cctx_count;
702		918
703	#if USE_VALGRIND	919	#if CORO_USE_VALGRIND
704	VALGRIND_STACK_DEREGISTER (cctx->valgrind_id);	920	VALGRIND_STACK_DEREGISTER (cctx->valgrind_id);
705	#endif	921	#endif
706		922
707	#if HAVE_MMAP	923	#if HAVE_MMAP
		924	if (cctx->flags & CC_MAPPED)
708	munmap (cctx->sptr, cctx->ssize);	925	munmap (cctx->sptr, cctx->ssize);
709	#else	926	else
		927	#endif
710	Safefree (cctx->sptr);	928	Safefree (cctx->sptr);
711	#endif
712		929
713	Safefree (cctx);	930	Safefree (cctx);
714	}	931	}
715		932
716	static coro_cctx *	933	static coro_cctx *
717	cctx_get ()	934	cctx_get (pTHX)
718	{	935	{
719	coro_cctx *cctx;
720
721	if (cctx_first)	936	while (cctx_first)
722	{	937	{
		938	coro_cctx *cctx = cctx_first;
		939	cctx_first = cctx->next;
723	--cctx_idle;	940	--cctx_idle;
724	cctx = cctx_first;	941
725	cctx_first = cctx->next;	942	if (cctx->ssize >= coro_stacksize && !(cctx->flags & CC_NOREUSE))
726	}	943	return cctx;
727	else	944
728	{	945	cctx_destroy (cctx);
729	cctx = cctx_new ();
730	PL_op = PL_op->op_next;
731	}	946	}
732		947
733	return cctx;	948	return cctx_new ();
734	}	949	}
735		950
736	static void	951	static void
737	cctx_put (coro_cctx *cctx)	952	cctx_put (coro_cctx *cctx)
738	{	953	{
		954	/* free another cctx if overlimit */
		955	if (cctx_idle >= MAX_IDLE_CCTX)
		956	{
		957	coro_cctx *first = cctx_first;
		958	cctx_first = first->next;
		959	--cctx_idle;
		960
		961	cctx_destroy (first);
		962	}
		963
739	++cctx_idle;	964	++cctx_idle;
740	cctx->next = cctx_first;	965	cctx->next = cctx_first;
741	cctx_first = cctx;	966	cctx_first = cctx;
742	}	967	}
743		968
744	/* never call directly, always through the coro_state_transfer global variable */	969	/ coroutine switching ***************************************************/
		970
745	static void NOINLINE	971	static void NOINLINE
		972	transfer_check (pTHX_ struct coro prev, struct coro next)
		973	{
		974	if (prev != next)
		975	{
		976	if (!(prev->flags & (CF_RUNNING \| CF_NEW)))
		977	croak ("Coro::State::transfer called with non-running/new prev Coro::State, but can only transfer from running or new states");
		978
		979	if (next->flags & CF_RUNNING)
		980	croak ("Coro::State::transfer called with running next Coro::State, but can only transfer to inactive states");
		981
		982	if (next->flags & CF_DESTROYED)
		983	croak ("Coro::State::transfer called with destroyed next Coro::State, but can only transfer to inactive states");
		984
		985	if (PL_lex_state != LEX_NOTPARSING)
		986	croak ("Coro::State::transfer called while parsing, but this is not supported");
		987	}
		988	}
		989
		990	/* always use the TRANSFER macro */
		991	static void NOINLINE
746	transfer (struct coro prev, struct coro next, int flags)	992	transfer (pTHX_ struct coro prev, struct coro next)
747	{	993	{
748	dSTACKLEVEL;	994	dSTACKLEVEL;
749		995
750	/* sometimes transfer is only called to set idle_sp */	996	/* sometimes transfer is only called to set idle_sp */
751	if (flags == TRANSFER_SET_STACKLEVEL)	997	if (!next)
		998	{
752	((coro_cctx *)prev)->idle_sp = STACKLEVEL;	999	((coro_cctx *)prev)->idle_sp = STACKLEVEL;
		1000	assert (((coro_cctx )prev)->idle_te = PL_top_env); / just for the side-effect when asserts are enabled */
		1001	}
753	else if (prev != next)	1002	else if (prev != next)
754	{	1003	{
755	coro_cctx *prev__cctx;	1004	coro_cctx *prev__cctx;
756		1005
		1006	if (prev->flags & CF_NEW)
		1007	{
		1008	/* create a new empty context */
		1009	Newz (0, prev->cctx, 1, coro_cctx);
		1010	prev->flags &= ~CF_NEW;
		1011	prev->flags \|= CF_RUNNING;
		1012	}
		1013
		1014	prev->flags &= ~CF_RUNNING;
		1015	next->flags \|= CF_RUNNING;
		1016
757	LOCK;	1017	LOCK;
758		1018
759	if (next->mainstack)	1019	if (next->flags & CF_NEW)
760	{	1020	{
761	/* coroutine already started */	1021	/* need to start coroutine */
762	SAVE (prev, flags);	1022	next->flags &= ~CF_NEW;
763	LOAD (next);	1023	/* first get rid of the old state */
		1024	save_perl (aTHX_ prev);
		1025	/* setup coroutine call */
		1026	coro_setup (aTHX_ next);
764	}	1027	}
765	else	1028	else
766	{	1029	{
767	/* need to start coroutine */	1030	/* coroutine already started */
768	/* first get rid of the old state */	1031	save_perl (aTHX_ prev);
769	SAVE (prev, -1);	1032	load_perl (aTHX_ next);
770	/* setup coroutine call */
771	setup_coro (next);
772	/* need a stack */
773	next->cctx = 0;
774	}	1033	}
775		1034
776	if (!prev->cctx)
777	/* create a new empty context */
778	Newz (0, prev->cctx, 1, coro_cctx);
779
780	prev__cctx = prev->cctx;	1035	prev__cctx = prev->cctx;
781		1036
782	/* possibly "free" the cctx */	1037	/* possibly "free" the cctx */
783	if (prev__cctx->idle_sp == STACKLEVEL)	1038	if (prev__cctx->idle_sp == STACKLEVEL && !(prev__cctx->flags & CC_TRACE))
784	{	1039	{
		1040	/* I assume that STACKLEVEL is a stronger indicator than PL_top_env changes */
		1041	assert (("ERROR: current top_env must equal previous top_env", PL_top_env == prev__cctx->idle_te));
		1042
		1043	prev->cctx = 0;
		1044
785	cctx_put (prev__cctx);	1045	cctx_put (prev__cctx);
786	prev->cctx = 0;
787	}	1046	}
788		1047
		1048	++next->usecount;
		1049
789	if (!next->cctx)	1050	if (!next->cctx)
790	next->cctx = cctx_get ();	1051	next->cctx = cctx_get (aTHX);
791		1052
792	if (prev__cctx != next->cctx)	1053	if (prev__cctx != next->cctx)
793	{	1054	{
794	prev__cctx->top_env = PL_top_env;	1055	prev__cctx->top_env = PL_top_env;
795	PL_top_env = next->cctx->top_env;	1056	PL_top_env = next->cctx->top_env;
796	coro_transfer (&prev__cctx->cctx, &next->cctx->cctx);	1057	coro_transfer (&prev__cctx->cctx, &next->cctx->cctx);
797	}	1058	}
798		1059
799	free_coro_mortal ();	1060	free_coro_mortal (aTHX);
800
801	UNLOCK;	1061	UNLOCK;
802	}	1062	}
803	}	1063	}
804		1064
805	struct transfer_args	1065	struct transfer_args
806	{	1066	{
807	struct coro prev, next;	1067	struct coro prev, next;
808	int flags;
809	};	1068	};
810		1069
811	#define TRANSFER(ta) transfer ((ta).prev, (ta).next, (ta).flags)	1070	#define TRANSFER(ta) transfer (aTHX_ (ta).prev, (ta).next)
		1071	#define TRANSFER_CHECK(ta) transfer_check (aTHX_ (ta).prev, (ta).next)
812		1072
		1073	/ high level stuff ******************************************************/
		1074
813	static void	1075	static int
814	coro_state_destroy (struct coro *coro)	1076	coro_state_destroy (pTHX_ struct coro *coro)
815	{	1077	{
816	if (coro->refcnt--)	1078	if (coro->flags & CF_DESTROYED)
817	return;	1079	return 0;
		1080
		1081	coro->flags \|= CF_DESTROYED;
		1082
		1083	if (coro->flags & CF_READY)
		1084	{
		1085	/* reduce nready, as destroying a ready coro effectively unreadies it */
		1086	/* alternative: look through all ready queues and remove the coro */
		1087	LOCK;
		1088	--coro_nready;
		1089	UNLOCK;
		1090	}
		1091	else
		1092	coro->flags \|= CF_READY; /* make sure it is NOT put into the readyqueue */
818		1093
819	if (coro->mainstack && coro->mainstack != main_mainstack)	1094	if (coro->mainstack && coro->mainstack != main_mainstack)
820	{	1095	{
821	struct coro temp;	1096	struct coro temp;
822		1097
823	SAVE ((&temp), TRANSFER_SAVE_ALL);	1098	if (coro->flags & CF_RUNNING)
824	LOAD (coro);	1099	croak ("FATAL: tried to destroy currently running coroutine");
825		1100
826	coro_destroy_stacks ();	1101	save_perl (aTHX_ &temp);
		1102	load_perl (aTHX_ coro);
827		1103
		1104	coro_destroy (aTHX_ coro);
		1105
828	LOAD ((&temp)); /* this will get rid of defsv etc.. */	1106	load_perl (aTHX_ &temp); /* this will get rid of defsv etc.. */
829		1107
830	coro->mainstack = 0;	1108	coro->mainstack = 0;
831	}	1109	}
832		1110
833	cctx_free (coro->cctx);	1111	cctx_destroy (coro->cctx);
834	SvREFCNT_dec (coro->args);	1112	SvREFCNT_dec (coro->args);
835	Safefree (coro);	1113
		1114	if (coro->next) coro->next->prev = coro->prev;
		1115	if (coro->prev) coro->prev->next = coro->next;
		1116	if (coro == coro_first) coro_first = coro->next;
		1117
		1118	return 1;
836	}	1119	}
837		1120
838	static int	1121	static int
839	coro_state_clear (pTHX_ SV sv, MAGIC mg)	1122	coro_state_free (pTHX_ SV sv, MAGIC mg)
840	{	1123	{
841	struct coro coro = (struct coro )mg->mg_ptr;	1124	struct coro coro = (struct coro )mg->mg_ptr;
842	mg->mg_ptr = 0;	1125	mg->mg_ptr = 0;
843		1126
		1127	coro->hv = 0;
		1128
		1129	if (--coro->refcnt < 0)
		1130	{
844	coro_state_destroy (coro);	1131	coro_state_destroy (aTHX_ coro);
		1132	Safefree (coro);
		1133	}
845		1134
846	return 0;	1135	return 0;
847	}	1136	}
848		1137
849	static int	1138	static int
…		…
856	return 0;	1145	return 0;
857	}	1146	}
858		1147
859	static MGVTBL coro_state_vtbl = {	1148	static MGVTBL coro_state_vtbl = {
860	0, 0, 0, 0,	1149	0, 0, 0, 0,
861	coro_state_clear,	1150	coro_state_free,
862	0,	1151	0,
863	#ifdef MGf_DUP	1152	#ifdef MGf_DUP
864	coro_state_dup,	1153	coro_state_dup,
865	#else	1154	#else
866	# define MGf_DUP 0	1155	# define MGf_DUP 0
867	#endif	1156	#endif
868	};	1157	};
869		1158
870	static struct coro *
871	SvSTATE (SV *coro)
872	{
873	HV *stash;
874	MAGIC *mg;
875
876	if (SvROK (coro))
877	coro = SvRV (coro);
878
879	stash = SvSTASH (coro);
880	if (stash != coro_stash && stash != coro_state_stash)
881	{
882	/* very slow, but rare, check */
883	if (!sv_derived_from (sv_2mortal (newRV_inc (coro)), "Coro::State"))
884	croak ("Coro::State object required");
885	}
886
887	mg = SvMAGIC (coro);
888	assert (mg->mg_type == PERL_MAGIC_ext);
889	return (struct coro *)mg->mg_ptr;
890	}
891
892	static void	1159	static void
893	prepare_transfer (struct transfer_args ta, SV prev, SV *next, int flags)	1160	prepare_transfer (pTHX_ struct transfer_args ta, SV prev_sv, SV *next_sv)
894	{	1161	{
895	ta->prev = SvSTATE (prev);	1162	ta->prev = SvSTATE (prev_sv);
896	ta->next = SvSTATE (next);	1163	ta->next = SvSTATE (next_sv);
897	ta->flags = flags;	1164	TRANSFER_CHECK (*ta);
898	}	1165	}
899		1166
900	static void	1167	static void
901	api_transfer (SV prev, SV next, int flags)	1168	api_transfer (SV prev_sv, SV next_sv)
902	{	1169	{
903	dTHX;	1170	dTHX;
904	struct transfer_args ta;	1171	struct transfer_args ta;
905		1172
906	prepare_transfer (&ta, prev, next, flags);	1173	prepare_transfer (aTHX_ &ta, prev_sv, next_sv);
907	TRANSFER (ta);	1174	TRANSFER (ta);
908	}	1175	}
909		1176
910	/ Coro ******************************************************************/	1177	/ Coro ******************************************************************/
911		1178
912	#define PRIO_MAX 3
913	#define PRIO_HIGH 1
914	#define PRIO_NORMAL 0
915	#define PRIO_LOW -1
916	#define PRIO_IDLE -3
917	#define PRIO_MIN -4
918
919	/* for Coro.pm */
920	static GV coro_current, coro_idle;
921	static AV *coro_ready [PRIO_MAX-PRIO_MIN+1];
922	static int coro_nready;
923
924	static void	1179	static void
925	coro_enq (SV *sv)	1180	coro_enq (pTHX_ SV *coro_sv)
926	{	1181	{
927	int prio;
928
929	if (SvTYPE (sv) != SVt_PVHV)
930	croak ("Coro::ready tried to enqueue something that is not a coroutine");
931
932	prio = SvSTATE (sv)->prio;
933
934	av_push (coro_ready [prio - PRIO_MIN], sv);	1182	av_push (coro_ready [SvSTATE (coro_sv)->prio - PRIO_MIN], coro_sv);
935	coro_nready++;
936	}	1183	}
937		1184
938	static SV *	1185	static SV *
939	coro_deq (int min_prio)	1186	coro_deq (pTHX_ int min_prio)
940	{	1187	{
941	int prio = PRIO_MAX - PRIO_MIN;	1188	int prio = PRIO_MAX - PRIO_MIN;
942		1189
943	min_prio -= PRIO_MIN;	1190	min_prio -= PRIO_MIN;
944	if (min_prio < 0)	1191	if (min_prio < 0)
945	min_prio = 0;	1192	min_prio = 0;
946		1193
947	for (prio = PRIO_MAX - PRIO_MIN + 1; --prio >= min_prio; )	1194	for (prio = PRIO_MAX - PRIO_MIN + 1; --prio >= min_prio; )
948	if (AvFILLp (coro_ready [prio]) >= 0)	1195	if (AvFILLp (coro_ready [prio]) >= 0)
949	{
950	coro_nready--;
951	return av_shift (coro_ready [prio]);	1196	return av_shift (coro_ready [prio]);
952	}
953		1197
954	return 0;	1198	return 0;
955	}	1199	}
956		1200
957	static void	1201	static int
958	api_ready (SV *coro)	1202	api_ready (SV *coro_sv)
959	{	1203	{
960	dTHX;	1204	dTHX;
		1205	struct coro *coro;
961		1206
962	if (SvROK (coro))	1207	if (SvROK (coro_sv))
963	coro = SvRV (coro);	1208	coro_sv = SvRV (coro_sv);
		1209
		1210	coro = SvSTATE (coro_sv);
		1211
		1212	if (coro->flags & CF_READY)
		1213	return 0;
		1214
		1215	coro->flags \|= CF_READY;
964		1216
965	LOCK;	1217	LOCK;
966	coro_enq (SvREFCNT_inc (coro));	1218	coro_enq (aTHX_ SvREFCNT_inc (coro_sv));
		1219	++coro_nready;
967	UNLOCK;	1220	UNLOCK;
968	}
969		1221
		1222	return 1;
		1223	}
		1224
970	static void	1225	static int
		1226	api_is_ready (SV *coro_sv)
		1227	{
		1228	dTHX;
		1229	return !!(SvSTATE (coro_sv)->flags & CF_READY);
		1230	}
		1231
		1232	static void
971	prepare_schedule (struct transfer_args *ta)	1233	prepare_schedule (pTHX_ struct transfer_args *ta)
972	{	1234	{
973	SV current, prev, *next;	1235	SV prev_sv, next_sv;
974
975	current = GvSV (coro_current);
976		1236
977	for (;;)	1237	for (;;)
978	{	1238	{
979	LOCK;	1239	LOCK;
980	next = coro_deq (PRIO_MIN);	1240	next_sv = coro_deq (aTHX_ PRIO_MIN);
		1241
		1242	/* nothing to schedule: call the idle handler */
		1243	if (!next_sv)
		1244	{
		1245	dSP;
		1246	UNLOCK;
		1247
		1248	ENTER;
		1249	SAVETMPS;
		1250
		1251	PUSHMARK (SP);
		1252	PUTBACK;
		1253	call_sv (get_sv ("Coro::idle", FALSE), G_DISCARD);
		1254
		1255	FREETMPS;
		1256	LEAVE;
		1257	continue;
		1258	}
		1259
		1260	ta->next = SvSTATE (next_sv);
		1261
		1262	/* cannot transfer to destroyed coros, skip and look for next */
		1263	if (ta->next->flags & CF_DESTROYED)
		1264	{
		1265	UNLOCK;
		1266	SvREFCNT_dec (next_sv);
		1267	/* coro_nready is already taken care of by destroy */
		1268	continue;
		1269	}
		1270
		1271	--coro_nready;
981	UNLOCK;	1272	UNLOCK;
982
983	if (next)
984	break;	1273	break;
985
986	{
987	dSP;
988
989	ENTER;
990	SAVETMPS;
991
992	PUSHMARK (SP);
993	PUTBACK;
994	call_sv (GvSV (coro_idle), G_DISCARD);
995
996	FREETMPS;
997	LEAVE;
998	}	1274	}
999	}
1000
1001	prev = SvRV (current);
1002	SvRV (current) = next;
1003		1275
1004	/* free this only after the transfer */	1276	/* free this only after the transfer */
		1277	prev_sv = SvRV (coro_current);
		1278	ta->prev = SvSTATE (prev_sv);
		1279	TRANSFER_CHECK (*ta);
		1280	assert (ta->next->flags & CF_READY);
		1281	ta->next->flags &= ~CF_READY;
		1282	SvRV_set (coro_current, next_sv);
		1283
1005	LOCK;	1284	LOCK;
1006	free_coro_mortal ();	1285	free_coro_mortal (aTHX);
		1286	coro_mortal = prev_sv;
1007	UNLOCK;	1287	UNLOCK;
1008	coro_mortal = prev;
1009
1010	ta->prev = SvSTATE (prev);
1011	ta->next = SvSTATE (next);
1012	ta->flags = TRANSFER_SAVE_ALL;
1013	}	1288	}
1014		1289
1015	static void	1290	static void
1016	prepare_cede (struct transfer_args *ta)	1291	prepare_cede (pTHX_ struct transfer_args *ta)
1017	{	1292	{
1018	LOCK;	1293	api_ready (coro_current);
1019	coro_enq (SvREFCNT_inc (SvRV (GvSV (coro_current))));
1020	UNLOCK;
1021
1022	prepare_schedule (ta);	1294	prepare_schedule (aTHX_ ta);
		1295	}
		1296
		1297	static int
		1298	prepare_cede_notself (pTHX_ struct transfer_args *ta)
		1299	{
		1300	if (coro_nready)
		1301	{
		1302	SV *prev = SvRV (coro_current);
		1303	prepare_schedule (aTHX_ ta);
		1304	api_ready (prev);
		1305	return 1;
		1306	}
		1307	else
		1308	return 0;
1023	}	1309	}
1024		1310
1025	static void	1311	static void
1026	api_schedule (void)	1312	api_schedule (void)
1027	{	1313	{
1028	dTHX;	1314	dTHX;
1029	struct transfer_args ta;	1315	struct transfer_args ta;
1030		1316
1031	prepare_schedule (&ta);	1317	prepare_schedule (aTHX_ &ta);
1032	TRANSFER (ta);	1318	TRANSFER (ta);
1033	}	1319	}
1034		1320
1035	static void	1321	static int
1036	api_cede (void)	1322	api_cede (void)
1037	{	1323	{
1038	dTHX;	1324	dTHX;
1039	struct transfer_args ta;	1325	struct transfer_args ta;
1040		1326
1041	prepare_cede (&ta);	1327	prepare_cede (aTHX_ &ta);
		1328
		1329	if (ta.prev != ta.next)
		1330	{
1042	TRANSFER (ta);	1331	TRANSFER (ta);
		1332	return 1;
		1333	}
		1334	else
		1335	return 0;
1043	}	1336	}
1044		1337
		1338	static int
		1339	api_cede_notself (void)
		1340	{
		1341	dTHX;
		1342	struct transfer_args ta;
		1343
		1344	if (prepare_cede_notself (aTHX_ &ta))
		1345	{
		1346	TRANSFER (ta);
		1347	return 1;
		1348	}
		1349	else
		1350	return 0;
		1351	}
		1352
		1353	static void
		1354	api_trace (SV *coro_sv, int flags)
		1355	{
		1356	dTHX;
		1357	struct coro *coro = SvSTATE (coro_sv);
		1358
		1359	if (flags & CC_TRACE)
		1360	{
		1361	if (!coro->cctx)
		1362	coro->cctx = cctx_new ();
		1363	else if (!(coro->cctx->flags & CC_TRACE))
		1364	croak ("cannot enable tracing on coroutine with custom stack");
		1365
		1366	coro->cctx->flags \|= CC_NOREUSE \| (flags & (CC_TRACE \| CC_TRACE_ALL));
		1367	}
		1368	else if (coro->cctx && coro->cctx->flags & CC_TRACE)
		1369	{
		1370	coro->cctx->flags &= ~(CC_TRACE \| CC_TRACE_ALL);
		1371
		1372	if (coro->flags & CF_RUNNING)
		1373	PL_runops = RUNOPS_DEFAULT;
		1374	else
		1375	coro->runops = RUNOPS_DEFAULT;
		1376	}
		1377	}
		1378
1045	MODULE = Coro::State PACKAGE = Coro::State	1379	MODULE = Coro::State PACKAGE = Coro::State PREFIX = api_
1046		1380
1047	PROTOTYPES: DISABLE	1381	PROTOTYPES: DISABLE
1048		1382
1049	BOOT:	1383	BOOT:
1050	{	1384	{
1051	#ifdef USE_ITHREADS	1385	#ifdef USE_ITHREADS
1052	MUTEX_INIT (&coro_mutex);	1386	MUTEX_INIT (&coro_mutex);
1053	#endif	1387	#endif
1054	BOOT_PAGESIZE;	1388	BOOT_PAGESIZE;
1055		1389
		1390	irsgv = gv_fetchpv ("/", 1, SVt_PV);
		1391
1056	coro_state_stash = gv_stashpv ("Coro::State", TRUE);	1392	coro_state_stash = gv_stashpv ("Coro::State", TRUE);
1057		1393
1058	newCONSTSUB (coro_state_stash, "SAVE_DEFAV", newSViv (TRANSFER_SAVE_DEFAV));	1394	newCONSTSUB (coro_state_stash, "CC_TRACE" , newSViv (CC_TRACE));
1059	newCONSTSUB (coro_state_stash, "SAVE_DEFSV", newSViv (TRANSFER_SAVE_DEFSV));	1395	newCONSTSUB (coro_state_stash, "CC_TRACE_SUB" , newSViv (CC_TRACE_SUB));
1060	newCONSTSUB (coro_state_stash, "SAVE_ERRSV", newSViv (TRANSFER_SAVE_ERRSV));	1396	newCONSTSUB (coro_state_stash, "CC_TRACE_LINE", newSViv (CC_TRACE_LINE));
		1397	newCONSTSUB (coro_state_stash, "CC_TRACE_ALL" , newSViv (CC_TRACE_ALL));
1061		1398
1062	main_mainstack = PL_mainstack;	1399	main_mainstack = PL_mainstack;
		1400	main_top_env = PL_top_env;
		1401
		1402	while (main_top_env->je_prev)
		1403	main_top_env = main_top_env->je_prev;
1063		1404
1064	coroapi.ver = CORO_API_VERSION;	1405	coroapi.ver = CORO_API_VERSION;
1065	coroapi.transfer = api_transfer;	1406	coroapi.transfer = api_transfer;
1066		1407
1067	assert (("PRIO_NORMAL must be 0", !PRIO_NORMAL));	1408	assert (("PRIO_NORMAL must be 0", !PRIO_NORMAL));
…		…
1074	struct coro *coro;	1415	struct coro *coro;
1075	HV *hv;	1416	HV *hv;
1076	int i;	1417	int i;
1077		1418
1078	Newz (0, coro, 1, struct coro);	1419	Newz (0, coro, 1, struct coro);
1079	coro->args = newAV ();	1420	coro->args = newAV ();
		1421	coro->flags = CF_NEW;
1080		1422
		1423	if (coro_first) coro_first->prev = coro;
		1424	coro->next = coro_first;
		1425	coro_first = coro;
		1426
1081	hv = newHV ();	1427	coro->hv = hv = newHV ();
1082	sv_magicext ((SV )hv, 0, PERL_MAGIC_ext, &coro_state_vtbl, (char )coro, 0)->mg_flags \|= MGf_DUP;	1428	sv_magicext ((SV )hv, 0, PERL_MAGIC_ext, &coro_state_vtbl, (char )coro, 0)->mg_flags \|= MGf_DUP;
1083	RETVAL = sv_bless (newRV_noinc ((SV *)hv), gv_stashpv (klass, 1));	1429	RETVAL = sv_bless (newRV_noinc ((SV *)hv), gv_stashpv (klass, 1));
1084		1430
1085	for (i = 1; i < items; i++)	1431	for (i = 1; i < items; i++)
1086	av_push (coro->args, newSVsv (ST (i)));	1432	av_push (coro->args, newSVsv (ST (i)));
1087	}	1433	}
1088	OUTPUT:	1434	OUTPUT:
1089	RETVAL	1435	RETVAL
1090		1436
		1437	# these not obviously related functions are all rolled into the same xs
		1438	# function to increase chances that they all will call transfer with the same
		1439	# stack offset
1091	void	1440	void
1092	_set_stacklevel (...)	1441	_set_stacklevel (...)
1093	ALIAS:	1442	ALIAS:
1094	Coro::State::transfer = 1	1443	Coro::State::transfer = 1
1095	Coro::schedule = 2	1444	Coro::schedule = 2
1096	Coro::cede = 3	1445	Coro::cede = 3
1097	Coro::Cont::yield = 4	1446	Coro::cede_notself = 4
1098	CODE:	1447	CODE:
1099	{	1448	{
1100	struct transfer_args ta;	1449	struct transfer_args ta;
1101		1450
1102	switch (ix)	1451	switch (ix)
1103	{	1452	{
1104	case 0:	1453	case 0:
1105	ta.prev = (struct coro )INT2PTR (coro_cctx , SvIV (ST (0)));	1454	ta.prev = (struct coro )INT2PTR (coro_cctx , SvIV (ST (0)));
1106	ta.next = 0;	1455	ta.next = 0;
1107	ta.flags = TRANSFER_SET_STACKLEVEL;
1108	break;	1456	break;
1109		1457
1110	case 1:	1458	case 1:
1111	if (items != 3)	1459	if (items != 2)
1112	croak ("Coro::State::transfer(prev,next,flags) expects three arguments, not %d", items);	1460	croak ("Coro::State::transfer (prev,next) expects two arguments, not %d", items);
1113		1461
1114	prepare_transfer (&ta, ST (0), ST (1), SvIV (ST (2)));	1462	prepare_transfer (aTHX_ &ta, ST (0), ST (1));
1115	break;	1463	break;
1116		1464
1117	case 2:	1465	case 2:
1118	prepare_schedule (&ta);	1466	prepare_schedule (aTHX_ &ta);
1119	break;	1467	break;
1120		1468
1121	case 3:	1469	case 3:
1122	prepare_cede (&ta);	1470	prepare_cede (aTHX_ &ta);
1123	break;	1471	break;
1124		1472
1125	case 4:	1473	case 4:
1126	{	1474	if (!prepare_cede_notself (aTHX_ &ta))
1127	SV *yieldstack;	1475	XSRETURN_EMPTY;
1128	SV *sv;
1129	AV *defav = GvAV (PL_defgv);
1130		1476
1131	yieldstack = *hv_fetch (
1132	(HV *)SvRV (GvSV (coro_current)),
1133	"yieldstack", sizeof ("yieldstack") - 1,
1134	0
1135	);
1136
1137	/* set up @_ -- ugly */
1138	av_clear (defav);
1139	av_fill (defav, items - 1);
1140	while (items--)
1141	av_store (defav, items, SvREFCNT_inc (ST(items)));
1142
1143	sv = av_pop ((AV *)SvRV (yieldstack));
1144	ta.prev = SvSTATE (av_fetch ((AV )SvRV (sv), 0, 0));
1145	ta.next = SvSTATE (av_fetch ((AV )SvRV (sv), 1, 0));
1146	ta.flags = 0;
1147	SvREFCNT_dec (sv);
1148	}
1149	break;	1477	break;
1150
1151	}	1478	}
1152		1479
		1480	BARRIER;
1153	TRANSFER (ta);	1481	TRANSFER (ta);
1154	}
1155		1482
1156	void	1483	if (GIMME_V != G_VOID && ta.next != ta.prev)
1157	_clone_state_from (SV dst, SV src)	1484	XSRETURN_YES;
		1485	}
		1486
		1487	bool
		1488	_destroy (SV *coro_sv)
1158	CODE:	1489	CODE:
1159	{	1490	RETVAL = coro_state_destroy (aTHX_ SvSTATE (coro_sv));
1160	struct coro *coro_src = SvSTATE (src);	1491	OUTPUT:
1161		1492	RETVAL
1162	sv_unmagic (SvRV (dst), PERL_MAGIC_ext);
1163
1164	++coro_src->refcnt;
1165	sv_magicext (SvRV (dst), 0, PERL_MAGIC_ext, &coro_state_vtbl, (char *)coro_src, 0)->mg_flags \|= MGf_DUP;
1166	}
1167		1493
1168	void	1494	void
1169	_exit (code)	1495	_exit (code)
1170	int code	1496	int code
1171	PROTOTYPE: $	1497	PROTOTYPE: $
1172	CODE:	1498	CODE:
1173	_exit (code);	1499	_exit (code);
1174		1500
1175	int	1501	int
		1502	cctx_stacksize (int new_stacksize = 0)
		1503	CODE:
		1504	RETVAL = coro_stacksize;
		1505	if (new_stacksize)
		1506	coro_stacksize = new_stacksize;
		1507	OUTPUT:
		1508	RETVAL
		1509
		1510	int
1176	cctx_count ()	1511	cctx_count ()
1177	CODE:	1512	CODE:
1178	RETVAL = cctx_count;	1513	RETVAL = cctx_count;
1179	OUTPUT:	1514	OUTPUT:
1180	RETVAL	1515	RETVAL
…		…
1184	CODE:	1519	CODE:
1185	RETVAL = cctx_idle;	1520	RETVAL = cctx_idle;
1186	OUTPUT:	1521	OUTPUT:
1187	RETVAL	1522	RETVAL
1188		1523
		1524	void
		1525	list ()
		1526	PPCODE:
		1527	{
		1528	struct coro *coro;
		1529	for (coro = coro_first; coro; coro = coro->next)
		1530	if (coro->hv)
		1531	XPUSHs (sv_2mortal (newRV_inc ((SV *)coro->hv)));
		1532	}
		1533
		1534	void
		1535	call (Coro::State coro, SV *coderef)
		1536	ALIAS:
		1537	eval = 1
		1538	CODE:
		1539	{
		1540	if (coro->mainstack)
		1541	{
		1542	struct coro temp;
		1543	Zero (&temp, 1, struct coro);
		1544
		1545	if (!(coro->flags & CF_RUNNING))
		1546	{
		1547	save_perl (aTHX_ &temp);
		1548	load_perl (aTHX_ coro);
		1549	}
		1550
		1551	{
		1552	dSP;
		1553	ENTER;
		1554	SAVETMPS;
		1555	PUSHMARK (SP);
		1556	PUTBACK;
		1557	if (ix)
		1558	eval_sv (coderef, 0);
		1559	else
		1560	call_sv (coderef, G_KEEPERR \| G_EVAL \| G_VOID \| G_DISCARD);
		1561	SPAGAIN;
		1562	FREETMPS;
		1563	LEAVE;
		1564	PUTBACK;
		1565	}
		1566
		1567	if (!(coro->flags & CF_RUNNING))
		1568	{
		1569	save_perl (aTHX_ coro);
		1570	load_perl (aTHX_ &temp);
		1571	}
		1572	}
		1573	}
		1574
		1575	SV *
		1576	is_ready (Coro::State coro)
		1577	PROTOTYPE: $
		1578	ALIAS:
		1579	is_ready = CF_READY
		1580	is_running = CF_RUNNING
		1581	is_new = CF_NEW
		1582	is_destroyed = CF_DESTROYED
		1583	CODE:
		1584	RETVAL = boolSV (coro->flags & ix);
		1585	OUTPUT:
		1586	RETVAL
		1587
		1588	void
		1589	api_trace (SV *coro, int flags = CC_TRACE \| CC_TRACE_SUB)
		1590
		1591	SV *
		1592	has_stack (Coro::State coro)
		1593	PROTOTYPE: $
		1594	CODE:
		1595	RETVAL = boolSV (!!coro->cctx);
		1596	OUTPUT:
		1597	RETVAL
		1598
		1599	int
		1600	is_traced (Coro::State coro)
		1601	PROTOTYPE: $
		1602	CODE:
		1603	RETVAL = (coro->cctx ? coro->cctx->flags : 0) & CC_TRACE_ALL;
		1604	OUTPUT:
		1605	RETVAL
		1606
		1607	IV
		1608	rss (Coro::State coro)
		1609	PROTOTYPE: $
		1610	ALIAS:
		1611	usecount = 1
		1612	CODE:
		1613	switch (ix)
		1614	{
		1615	case 0: RETVAL = coro_rss (aTHX_ coro); break;
		1616	case 1: RETVAL = coro->usecount; break;
		1617	}
		1618	OUTPUT:
		1619	RETVAL
		1620
		1621
1189	MODULE = Coro::State PACKAGE = Coro	1622	MODULE = Coro::State PACKAGE = Coro
1190		1623
1191	BOOT:	1624	BOOT:
1192	{	1625	{
1193	int i;	1626	int i;
		1627
		1628	sv_pool_rss = get_sv ("Coro::POOL_RSS" , TRUE);
		1629	sv_pool_size = get_sv ("Coro::POOL_SIZE" , TRUE);
		1630	av_async_pool = get_av ("Coro::async_pool", TRUE);
		1631
		1632	coro_current = get_sv ("Coro::current", FALSE);
		1633	SvREADONLY_on (coro_current);
1194		1634
1195	coro_stash = gv_stashpv ("Coro", TRUE);	1635	coro_stash = gv_stashpv ("Coro", TRUE);
1196		1636
1197	newCONSTSUB (coro_stash, "PRIO_MAX", newSViv (PRIO_MAX));	1637	newCONSTSUB (coro_stash, "PRIO_MAX", newSViv (PRIO_MAX));
1198	newCONSTSUB (coro_stash, "PRIO_HIGH", newSViv (PRIO_HIGH));	1638	newCONSTSUB (coro_stash, "PRIO_HIGH", newSViv (PRIO_HIGH));
1199	newCONSTSUB (coro_stash, "PRIO_NORMAL", newSViv (PRIO_NORMAL));	1639	newCONSTSUB (coro_stash, "PRIO_NORMAL", newSViv (PRIO_NORMAL));
1200	newCONSTSUB (coro_stash, "PRIO_LOW", newSViv (PRIO_LOW));	1640	newCONSTSUB (coro_stash, "PRIO_LOW", newSViv (PRIO_LOW));
1201	newCONSTSUB (coro_stash, "PRIO_IDLE", newSViv (PRIO_IDLE));	1641	newCONSTSUB (coro_stash, "PRIO_IDLE", newSViv (PRIO_IDLE));
1202	newCONSTSUB (coro_stash, "PRIO_MIN", newSViv (PRIO_MIN));	1642	newCONSTSUB (coro_stash, "PRIO_MIN", newSViv (PRIO_MIN));
1203		1643
1204	coro_current = gv_fetchpv ("Coro::current", TRUE, SVt_PV);
1205	coro_idle = gv_fetchpv ("Coro::idle" , TRUE, SVt_PV);
1206
1207	for (i = PRIO_MAX - PRIO_MIN + 1; i--; )	1644	for (i = PRIO_MAX - PRIO_MIN + 1; i--; )
1208	coro_ready[i] = newAV ();	1645	coro_ready[i] = newAV ();
1209		1646
1210	{	1647	{
1211	SV *sv = perl_get_sv("Coro::API", 1);	1648	SV *sv = perl_get_sv("Coro::API", 1);
1212		1649
1213	coroapi.schedule = api_schedule;	1650	coroapi.schedule = api_schedule;
1214	coroapi.cede = api_cede;	1651	coroapi.cede = api_cede;
		1652	coroapi.cede_notself = api_cede_notself;
1215	coroapi.ready = api_ready;	1653	coroapi.ready = api_ready;
		1654	coroapi.is_ready = api_is_ready;
1216	coroapi.nready = &coro_nready;	1655	coroapi.nready = &coro_nready;
1217	coroapi.current = coro_current;	1656	coroapi.current = coro_current;
1218		1657
1219	GCoroAPI = &coroapi;	1658	GCoroAPI = &coroapi;
1220	sv_setiv (sv, (IV)&coroapi);	1659	sv_setiv (sv, (IV)&coroapi);
1221	SvREADONLY_on (sv);	1660	SvREADONLY_on (sv);
1222	}	1661	}
1223	}	1662	}
		1663
		1664	void
		1665	_set_current (SV *current)
		1666	PROTOTYPE: $
		1667	CODE:
		1668	SvREFCNT_dec (SvRV (coro_current));
		1669	SvRV_set (coro_current, SvREFCNT_inc (SvRV (current)));
1224		1670
1225	int	1671	int
1226	prio (Coro::State coro, int newprio = 0)	1672	prio (Coro::State coro, int newprio = 0)
1227	ALIAS:	1673	ALIAS:
1228	nice = 1	1674	nice = 1
…		…
1231	RETVAL = coro->prio;	1677	RETVAL = coro->prio;
1232		1678
1233	if (items > 1)	1679	if (items > 1)
1234	{	1680	{
1235	if (ix)	1681	if (ix)
1236	newprio += coro->prio;	1682	newprio = coro->prio - newprio;
1237		1683
1238	if (newprio < PRIO_MIN) newprio = PRIO_MIN;	1684	if (newprio < PRIO_MIN) newprio = PRIO_MIN;
1239	if (newprio > PRIO_MAX) newprio = PRIO_MAX;	1685	if (newprio > PRIO_MAX) newprio = PRIO_MAX;
1240		1686
1241	coro->prio = newprio;	1687	coro->prio = newprio;
1242	}	1688	}
1243	}	1689	}
		1690	OUTPUT:
		1691	RETVAL
1244		1692
1245	void	1693	SV *
1246	ready (SV *self)	1694	ready (SV *self)
1247	PROTOTYPE: $	1695	PROTOTYPE: $
1248	CODE:	1696	CODE:
1249	api_ready (self);	1697	RETVAL = boolSV (api_ready (self));
		1698	OUTPUT:
		1699	RETVAL
1250		1700
1251	int	1701	int
1252	nready (...)	1702	nready (...)
1253	PROTOTYPE:	1703	PROTOTYPE:
1254	CODE:	1704	CODE:
1255	RETVAL = coro_nready;	1705	RETVAL = coro_nready;
1256	OUTPUT:	1706	OUTPUT:
1257	RETVAL	1707	RETVAL
1258		1708
		1709	# for async_pool speedup
		1710	void
		1711	_pool_1 (SV *cb)
		1712	CODE:
		1713	{
		1714	struct coro *coro = SvSTATE (coro_current);
		1715	HV hv = (HV )SvRV (coro_current);
		1716	AV *defav = GvAV (PL_defgv);
		1717	SV *invoke = hv_delete (hv, "_invoke", sizeof ("_invoke") - 1, 0);
		1718	AV *invoke_av;
		1719	int i, len;
		1720
		1721	if (!invoke)
		1722	croak ("\3terminate\2\n");
		1723
		1724	SvREFCNT_dec (coro->saved_deffh);
		1725	coro->saved_deffh = SvREFCNT_inc ((SV *)PL_defoutgv);
		1726
		1727	hv_store (hv, "desc", sizeof ("desc") - 1,
		1728	newSVpvn ("[async_pool]", sizeof ("[async_pool]") - 1), 0);
		1729
		1730	invoke_av = (AV *)SvRV (invoke);
		1731	len = av_len (invoke_av);
		1732
		1733	sv_setsv (cb, AvARRAY (invoke_av)[0]);
		1734
		1735	if (len > 0)
		1736	{
		1737	av_fill (defav, len - 1);
		1738	for (i = 0; i < len; ++i)
		1739	av_store (defav, i, SvREFCNT_inc (AvARRAY (invoke_av)[i + 1]));
		1740	}
		1741
		1742	SvREFCNT_dec (invoke);
		1743	}
		1744
		1745	void
		1746	_pool_2 (SV *cb)
		1747	CODE:
		1748	{
		1749	struct coro *coro = SvSTATE (coro_current);
		1750
		1751	sv_setsv (cb, &PL_sv_undef);
		1752
		1753	SvREFCNT_dec ((SV )PL_defoutgv); PL_defoutgv = (GV )coro->saved_deffh;
		1754	coro->saved_deffh = 0;
		1755
		1756	if (coro_rss (aTHX_ coro) > SvIV (sv_pool_rss)
		1757	\|\| av_len (av_async_pool) + 1 >= SvIV (sv_pool_size))
		1758	croak ("\3terminate\2\n");
		1759
		1760	av_clear (GvAV (PL_defgv));
		1761	hv_store ((HV *)SvRV (coro_current), "desc", sizeof ("desc") - 1,
		1762	newSVpvn ("[async_pool idle]", sizeof ("[async_pool idle]") - 1), 0);
		1763
		1764	coro->prio = 0;
		1765
		1766	if (coro->cctx && (coro->cctx->flags & CC_TRACE))
		1767	api_trace (coro_current, 0);
		1768
		1769	av_push (av_async_pool, newSVsv (coro_current));
		1770	}
		1771
		1772
1259	MODULE = Coro::State PACKAGE = Coro::AIO	1773	MODULE = Coro::State PACKAGE = Coro::AIO
1260		1774
1261	SV *	1775	SV *
1262	_get_state ()	1776	_get_state ()
1263	CODE:	1777	CODE:
1264	{	1778	{
1265	struct {	1779	struct io_state *data;
1266	int errorno;
1267	int laststype;
1268	int laststatval;
1269	Stat_t statcache;
1270	} data;
1271		1780
		1781	RETVAL = newSV (sizeof (struct io_state));
		1782	data = (struct io_state *)SvPVX (RETVAL);
		1783	SvCUR_set (RETVAL, sizeof (struct io_state));
		1784	SvPOK_only (RETVAL);
		1785
1272	data.errorno = errno;	1786	data->errorno = errno;
1273	data.laststype = PL_laststype;	1787	data->laststype = PL_laststype;
1274	data.laststatval = PL_laststatval;	1788	data->laststatval = PL_laststatval;
1275	data.statcache = PL_statcache;	1789	data->statcache = PL_statcache;
1276
1277	RETVAL = newSVpvn ((char *)&data, sizeof data);
1278	}	1790	}
1279	OUTPUT:	1791	OUTPUT:
1280	RETVAL	1792	RETVAL
1281		1793
1282	void	1794	void
1283	_set_state (char *data_)	1795	_set_state (char *data_)
1284	PROTOTYPE: $	1796	PROTOTYPE: $
1285	CODE:	1797	CODE:
1286	{	1798	{
1287	struct {	1799	struct io_state data = (void )data_;
1288	int errorno;
1289	int laststype;
1290	int laststatval;
1291	Stat_t statcache;
1292	} data = (void )data_;
1293		1800
1294	errno = data->errorno;	1801	errno = data->errorno;
1295	PL_laststype = data->laststype;	1802	PL_laststype = data->laststype;
1296	PL_laststatval = data->laststatval;	1803	PL_laststatval = data->laststatval;
1297	PL_statcache = data->statcache;	1804	PL_statcache = data->statcache;
1298	}	1805	}
		1806

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Comparing Coro/Coro/State.xs (file contents): Revision 1.107 by root, Mon Nov 27 02:15:51 2006 UTC vs. Revision 1.184 by root, Thu Oct 4 13:45:56 2007 UTC

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Comparing Coro/Coro/State.xs (file contents):
Revision 1.107 by root, Mon Nov 27 02:15:51 2006 UTC vs.
Revision 1.184 by root, Thu Oct 4 13:45:56 2007 UTC