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

Comparing Coro/Coro/State.xs (file contents):
Revision 1.105 by root, Mon Nov 27 02:01:33 2006 UTC vs.
Revision 1.192 by root, Fri Oct 5 21:51:40 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
		11	#include <stdio.h>
		12	#include <errno.h>
		13	#include <assert.h>
		14
		15	#ifdef HAVE_MMAP
		16	# include <unistd.h>
		17	# include <sys/mman.h>
		18	# ifndef MAP_ANONYMOUS
		19	# ifdef MAP_ANON
		20	# define MAP_ANONYMOUS MAP_ANON
		21	# else
		22	# undef HAVE_MMAP
		23	# endif
		24	# endif
		25	# include <limits.h>
		26	# ifndef PAGESIZE
		27	# define PAGESIZE pagesize
		28	# define BOOT_PAGESIZE pagesize = sysconf (_SC_PAGESIZE)
		29	static long pagesize;
		30	# else
		31	# define BOOT_PAGESIZE (void)0
		32	# endif
		33	#else
		34	# define PAGESIZE 0
		35	# define BOOT_PAGESIZE (void)0
		36	#endif
		37
9	#if USE_VALGRIND	38	#if CORO_USE_VALGRIND
10	# include <valgrind/valgrind.h>	39	# include <valgrind/valgrind.h>
		40	# define REGISTER_STACK(cctx,start,end) (cctx)->valgrind_id = VALGRIND_STACK_REGISTER ((start), (end))
		41	#else
		42	# define REGISTER_STACK(cctx,start,end)
11	#endif	43	#endif
		44
		45	/* the maximum number of idle cctx that will be pooled */
		46	#define MAX_IDLE_CCTX 8
12		47
13	#define PERL_VERSION_ATLEAST(a,b,c) \	48	#define PERL_VERSION_ATLEAST(a,b,c) \
14	(PERL_REVISION > (a) \	49	(PERL_REVISION > (a) \
15	\|\| (PERL_REVISION == (a) \	50	\|\| (PERL_REVISION == (a) \
16	&& (PERL_VERSION > (b) \	51	&& (PERL_VERSION > (b) \
35	# ifndef IS_PADCONST	70	# ifndef IS_PADCONST
36	# define IS_PADCONST(v) 0	71	# define IS_PADCONST(v) 0
37	# endif	72	# endif
38	#endif	73	#endif
39		74
40	#include <stdio.h>	75	/* 5.8.7 */
41	#include <errno.h>	76	#ifndef SvRV_set
		77	# define SvRV_set(s,v) SvRV(s) = (v)
		78	#endif
		79
		80	/* 5.8.8 */
		81	#ifndef GV_NOTQUAL
		82	# define GV_NOTQUAL 0
		83	#endif
		84	#ifndef newSV
		85	# define newSV(l) NEWSV(0,l)
		86	#endif
42		87
43	#if !__i386 && !__x86_64 && !__powerpc && !__m68k && !__alpha && !__mips && !__sparc64	88	#if !__i386 && !__x86_64 && !__powerpc && !__m68k && !__alpha && !__mips && !__sparc64
44	# undef STACKGUARD	89	# undef CORO_STACKGUARD
45	#endif
46
47	#ifndef STACKGUARD
48	# define STACKGUARD 0
49	#endif
50
51	#ifdef HAVE_MMAP
52	# include <unistd.h>
53	# include <sys/mman.h>
54	# ifndef MAP_ANONYMOUS
55	# ifdef MAP_ANON
56	# define MAP_ANONYMOUS MAP_ANON
57	# else
58	# undef HAVE_MMAP
59	# endif
60	# endif	90	#endif
61	# include <limits.h>	91
62	# ifndef PAGESIZE	92	#ifndef CORO_STACKGUARD
63	# define PAGESIZE pagesize	93	# define CORO_STACKGUARD 0
64	# define BOOT_PAGESIZE pagesize = sysconf (_SC_PAGESIZE)
65	static long pagesize;
66	# else
67	# define BOOT_PAGESIZE
68	# endif	94	#endif
69	#endif
70		95
71	/* The next macro should declare a variable stacklevel that contains and approximation	96	/* prefer perl internal functions over our own? */
72	* to the current C stack pointer. Its property is that it changes with each call	97	#ifndef CORO_PREFER_PERL_FUNCTIONS
73	* and should be unique. */	98	# define CORO_PREFER_PERL_FUNCTIONS 0
		99	#endif
		100
		101	/* The next macros try to return the current stack pointer, in an as
		102	* portable way as possible. */
74	#define dSTACKLEVEL int stacklevel	103	#define dSTACKLEVEL volatile char stacklevel
75	#define STACKLEVEL ((void *)&stacklevel)	104	#define STACKLEVEL ((void *)&stacklevel)
76		105
77	#define IN_DESTRUCT (PL_main_cv == Nullcv)	106	#define IN_DESTRUCT (PL_main_cv == Nullcv)
78		107
79	#if __GNUC__ >= 3	108	#if __GNUC__ >= 3
80	# define attribute(x) __attribute__(x)	109	# define attribute(x) __attribute__(x)
		110	# define BARRIER __asm__ __volatile__ ("" : : : "memory")
81	#else	111	#else
82	# define attribute(x)	112	# define attribute(x)
		113	# define BARRIER
83	#endif	114	#endif
84		115
85	#define NOINLINE attribute ((noinline))	116	#define NOINLINE attribute ((noinline))
86		117
87	#include "CoroAPI.h"	118	#include "CoroAPI.h"
88
89	#define TRANSFER_SET_STACKLEVEL 0x8bfbfbfb /* magic cookie */
90		119
91	#ifdef USE_ITHREADS	120	#ifdef USE_ITHREADS
92	static perl_mutex coro_mutex;	121	static perl_mutex coro_mutex;
93	# define LOCK do { MUTEX_LOCK (&coro_mutex); } while (0)	122	# define LOCK do { MUTEX_LOCK (&coro_mutex); } while (0)
94	# define UNLOCK do { MUTEX_UNLOCK (&coro_mutex); } while (0)	123	# define UNLOCK do { MUTEX_UNLOCK (&coro_mutex); } while (0)
95	#else	124	#else
96	# define LOCK (void)0	125	# define LOCK (void)0
97	# define UNLOCK (void)0	126	# define UNLOCK (void)0
98	#endif	127	#endif
99		128
		129	/* helper storage struct for Coro::AIO */
		130	struct io_state
		131	{
		132	int errorno;
		133	I32 laststype;
		134	int laststatval;
		135	Stat_t statcache;
		136	};
		137
		138	static size_t coro_stacksize = CORO_STACKSIZE;
100	static struct CoroAPI coroapi;	139	static struct CoroAPI coroapi;
101	static AV main_mainstack; / used to differentiate between $main and others */	140	static AV main_mainstack; / used to differentiate between $main and others */
		141	static JMPENV *main_top_env;
102	static HV coro_state_stash, coro_stash;	142	static HV coro_state_stash, coro_stash;
103	static SV coro_mortal; / will be freed after next transfer */	143	static SV coro_mortal; / will be freed after next transfer */
104		144
		145	static GV irsgv; / $/ */
		146	static GV stdoutgv; / STDOUT /
		147
		148	/* async_pool helper stuff */
		149	static SV *sv_pool_rss;
		150	static SV *sv_pool_size;
		151	static AV *av_async_pool;
		152
		153	static struct coro_cctx *cctx_first;
		154	static int cctx_count, cctx_idle;
		155
		156	enum {
		157	CC_MAPPED = 0x01,
		158	CC_NOREUSE = 0x02, /* throw this away after tracing */
		159	CC_TRACE = 0x04,
		160	CC_TRACE_SUB = 0x08, /* trace sub calls */
		161	CC_TRACE_LINE = 0x10, /* trace each statement */
		162	CC_TRACE_ALL = CC_TRACE_SUB \| CC_TRACE_LINE,
		163	};
		164
105	/* this is a structure representing a c-level coroutine */	165	/* this is a structure representing a c-level coroutine */
106	typedef struct coro_stack {	166	typedef struct coro_cctx {
107	struct coro_stack *next;	167	struct coro_cctx *next;
108		168
109	/* the stack */	169	/* the stack */
110	void *sptr;	170	void *sptr;
111	long ssize; /* positive == mmap, otherwise malloc */	171	size_t ssize;
112		172
113	/* cpu state */	173	/* cpu state */
114	void idle_sp; / sp of top-level transfer/schedule/cede call */	174	void idle_sp; / sp of top-level transfer/schedule/cede call */
		175	JMPENV idle_te; / same as idle_sp, but for top_env, TODO: remove once stable */
115	JMPENV *top_env;	176	JMPENV *top_env;
116	coro_context cctx;	177	coro_context cctx;
117		178
118	#if USE_VALGRIND	179	#if CORO_USE_VALGRIND
119	int valgrind_id;	180	int valgrind_id;
120	#endif	181	#endif
121	} coro_stack;	182	unsigned char flags;
		183	} coro_cctx;
		184
		185	enum {
		186	CF_RUNNING = 0x0001, /* coroutine is running */
		187	CF_READY = 0x0002, /* coroutine is ready */
		188	CF_NEW = 0x0004, /* has never been switched to */
		189	CF_DESTROYED = 0x0008, /* coroutine data has been freed */
		190	};
122		191
123	/* this is a structure representing a perl-level coroutine */	192	/* this is a structure representing a perl-level coroutine */
124	struct coro {	193	struct coro {
125	/* the c coroutine allocated to this perl coroutine, if any */	194	/* the c coroutine allocated to this perl coroutine, if any */
126	coro_stack *stack;	195	coro_cctx *cctx;
127		196
128	/* data associated with this coroutine (initial args) */	197	/* data associated with this coroutine (initial args) */
129	AV *args;	198	AV *args;
130	int refcnt;	199	int refcnt;
		200	int flags; /* CF_ flags */
131		201
132	/* optionally saved, might be zero */	202	/* optionally saved, might be zero */
133	AV *defav;	203	AV defav; / @_ */
134	SV *defsv;	204	SV defsv; / $_ */
135	SV *errsv;	205	SV errsv; / $@ */
		206	SV deffh; / default filehandle */
		207	SV irssv; / $/ */
		208	SV irssv_sv; / real $/ cache */
136		209
137	/* saved global state not related to stacks */	210	#define VAR(name,type) type name;
138	U8 dowarn;	211	# include "state.h"
139	I32 in_eval;	212	#undef VAR
140		213
141	/* the stacks and related info (callchain etc..) */	214	/* statistics */
142	PERL_SI *curstackinfo;	215	int usecount; /* number of transfers to this coro */
143	AV *curstack;
144	AV *mainstack;
145	SV **stack_sp;
146	OP *op;
147	SV **curpad;
148	AV *comppad;
149	CV *compcv;
150	SV **stack_base;
151	SV **stack_max;
152	SV **tmps_stack;
153	I32 tmps_floor;
154	I32 tmps_ix;
155	I32 tmps_max;
156	I32 *markstack;
157	I32 *markstack_ptr;
158	I32 *markstack_max;
159	I32 *scopestack;
160	I32 scopestack_ix;
161	I32 scopestack_max;
162	ANY *savestack;
163	I32 savestack_ix;
164	I32 savestack_max;
165	OP **retstack;
166	I32 retstack_ix;
167	I32 retstack_max;
168	PMOP *curpm;
169	COP *curcop;
170		216
171	/* coro process data */	217	/* coro process data */
172	int prio;	218	int prio;
		219	//SV *throw;
		220
		221	/* async_pool */
		222	SV *saved_deffh;
		223
		224	/* linked list */
		225	struct coro next, prev;
		226	HV hv; / the perl hash associated with this coro, if any */
173	};	227	};
174		228
175	typedef struct coro *Coro__State;	229	typedef struct coro *Coro__State;
176	typedef struct coro *Coro__State_or_hashref;	230	typedef struct coro *Coro__State_or_hashref;
177		231
		232	/ Coro ******************************************************************/
		233
		234	#define PRIO_MAX 3
		235	#define PRIO_HIGH 1
		236	#define PRIO_NORMAL 0
		237	#define PRIO_LOW -1
		238	#define PRIO_IDLE -3
		239	#define PRIO_MIN -4
		240
		241	/* for Coro.pm */
		242	static SV *coro_current;
		243	static AV *coro_ready [PRIO_MAX-PRIO_MIN+1];
		244	static int coro_nready;
		245	static struct coro *coro_first;
		246
		247	/ lowlevel stuff ********************************************************/
		248
178	static AV *	249	static AV *
179	coro_clone_padlist (CV *cv)	250	coro_clone_padlist (pTHX_ CV *cv)
180	{	251	{
181	AV *padlist = CvPADLIST (cv);	252	AV *padlist = CvPADLIST (cv);
182	AV newpadlist, newpad;	253	AV newpadlist, newpad;
183		254
184	newpadlist = newAV ();	255	newpadlist = newAV ();
…		…
196		267
197	return newpadlist;	268	return newpadlist;
198	}	269	}
199		270
200	static void	271	static void
201	free_padlist (AV *padlist)	272	free_padlist (pTHX_ AV *padlist)
202	{	273	{
203	/* may be during global destruction */	274	/* may be during global destruction */
204	if (SvREFCNT (padlist))	275	if (SvREFCNT (padlist))
205	{	276	{
206	I32 i = AvFILLp (padlist);	277	I32 i = AvFILLp (padlist);
…		…
227	AV *padlist;	298	AV *padlist;
228	AV av = (AV )mg->mg_obj;	299	AV av = (AV )mg->mg_obj;
229		300
230	/* casting is fun. */	301	/* casting is fun. */
231	while (&PL_sv_undef != (SV )(padlist = (AV )av_pop (av)))	302	while (&PL_sv_undef != (SV )(padlist = (AV )av_pop (av)))
232	free_padlist (padlist);	303	free_padlist (aTHX_ padlist);
233		304
234	SvREFCNT_dec (av);	305	SvREFCNT_dec (av);
235		306
236	return 0;	307	return 0;
237	}	308	}
238		309
239	#define PERL_MAGIC_coro PERL_MAGIC_ext	310	#define PERL_MAGIC_coro PERL_MAGIC_ext
240		311
241	static MGVTBL vtbl_coro = {0, 0, 0, 0, coro_cv_free};	312	static MGVTBL vtbl_coro = {0, 0, 0, 0, coro_cv_free};
242		313
		314	#define CORO_MAGIC(cv) \
		315	SvMAGIC (cv) \
		316	? SvMAGIC (cv)->mg_type == PERL_MAGIC_coro \
		317	? SvMAGIC (cv) \
		318	: mg_find ((SV *)cv, PERL_MAGIC_coro) \
		319	: 0
		320
		321	static struct coro *
		322	SvSTATE_ (pTHX_ SV *coro)
		323	{
		324	HV *stash;
		325	MAGIC *mg;
		326
		327	if (SvROK (coro))
		328	coro = SvRV (coro);
		329
		330	if (SvTYPE (coro) != SVt_PVHV)
		331	croak ("Coro::State object required");
		332
		333	stash = SvSTASH (coro);
		334	if (stash != coro_stash && stash != coro_state_stash)
		335	{
		336	/* very slow, but rare, check */
		337	if (!sv_derived_from (sv_2mortal (newRV_inc (coro)), "Coro::State"))
		338	croak ("Coro::State object required");
		339	}
		340
		341	mg = CORO_MAGIC (coro);
		342	return (struct coro *)mg->mg_ptr;
		343	}
		344
		345	#define SvSTATE(sv) SvSTATE_ (aTHX_ (sv))
		346
243	/* the next two functions merely cache the padlists */	347	/* the next two functions merely cache the padlists */
244	static void	348	static void
245	get_padlist (CV *cv)	349	get_padlist (pTHX_ CV *cv)
246	{	350	{
247	MAGIC mg = mg_find ((SV )cv, PERL_MAGIC_coro);	351	MAGIC *mg = CORO_MAGIC (cv);
		352	AV *av;
248		353
249	if (mg && AvFILLp ((AV *)mg->mg_obj) >= 0)	354	if (mg && AvFILLp ((av = (AV *)mg->mg_obj)) >= 0)
250	CvPADLIST (cv) = (AV )av_pop ((AV )mg->mg_obj);	355	CvPADLIST (cv) = (AV *)AvARRAY (av)[AvFILLp (av)--];
251	else	356	else
252	{	357	{
253	#if 0	358	#if CORO_PREFER_PERL_FUNCTIONS
254	/* this is probably cleaner, but also slower? */	359	/* this is probably cleaner, but also slower? */
255	CV *cp = Perl_cv_clone (cv);	360	CV *cp = Perl_cv_clone (cv);
256	CvPADLIST (cv) = CvPADLIST (cp);	361	CvPADLIST (cv) = CvPADLIST (cp);
257	CvPADLIST (cp) = 0;	362	CvPADLIST (cp) = 0;
258	SvREFCNT_dec (cp);	363	SvREFCNT_dec (cp);
259	#else	364	#else
260	CvPADLIST (cv) = coro_clone_padlist (cv);	365	CvPADLIST (cv) = coro_clone_padlist (aTHX_ cv);
261	#endif	366	#endif
262	}	367	}
263	}	368	}
264		369
265	static void	370	static void
266	put_padlist (CV *cv)	371	put_padlist (pTHX_ CV *cv)
267	{	372	{
268	MAGIC mg = mg_find ((SV )cv, PERL_MAGIC_coro);	373	MAGIC *mg = CORO_MAGIC (cv);
		374	AV *av;
269		375
270	if (!mg)	376	if (!mg)
271	{	377	{
272	sv_magic ((SV *)cv, 0, PERL_MAGIC_coro, 0, 0);	378	sv_magic ((SV *)cv, 0, PERL_MAGIC_coro, 0, 0);
273	mg = mg_find ((SV *)cv, PERL_MAGIC_coro);	379	mg = mg_find ((SV *)cv, PERL_MAGIC_coro);
274	mg->mg_virtual = &vtbl_coro;	380	mg->mg_virtual = &vtbl_coro;
275	mg->mg_obj = (SV *)newAV ();	381	mg->mg_obj = (SV *)newAV ();
276	}	382	}
277		383
278	av_push ((AV )mg->mg_obj, (SV )CvPADLIST (cv));	384	av = (AV *)mg->mg_obj;
279	}
280		385
281	#define SB do {	386	if (AvFILLp (av) >= AvMAX (av))
282	#define SE } while (0)	387	av_extend (av, AvMAX (av) + 1);
283		388
284	#define LOAD(state) load_state((state));	389	AvARRAY (av)[++AvFILLp (av)] = (SV *)CvPADLIST (cv);
285	#define SAVE(state,flags) save_state((state),(flags));	390	}
286		391
287	#define REPLACE_SV(sv,val) SB SvREFCNT_dec(sv); (sv) = (val); (val) = 0; SE	392	/ load & save, init *****************************************************/
288		393
289	static void	394	static void
290	load_state(Coro__State c)	395	load_perl (pTHX_ Coro__State c)
291	{	396	{
292	PL_dowarn = c->dowarn;	397	#define VAR(name,type) PL_ ## name = c->name;
293	PL_in_eval = c->in_eval;	398	# include "state.h"
		399	#undef VAR
294		400
295	PL_curstackinfo = c->curstackinfo;	401	GvSV (PL_defgv) = c->defsv;
296	PL_curstack = c->curstack;	402	GvAV (PL_defgv) = c->defav;
297	PL_mainstack = c->mainstack;	403	GvSV (PL_errgv) = c->errsv;
298	PL_stack_sp = c->stack_sp;	404	GvSV (irsgv) = c->irssv_sv;
299	PL_op = c->op;
300	PL_curpad = c->curpad;
301	PL_comppad = c->comppad;
302	PL_compcv = c->compcv;
303	PL_stack_base = c->stack_base;
304	PL_stack_max = c->stack_max;
305	PL_tmps_stack = c->tmps_stack;
306	PL_tmps_floor = c->tmps_floor;
307	PL_tmps_ix = c->tmps_ix;
308	PL_tmps_max = c->tmps_max;
309	PL_markstack = c->markstack;
310	PL_markstack_ptr = c->markstack_ptr;
311	PL_markstack_max = c->markstack_max;
312	PL_scopestack = c->scopestack;
313	PL_scopestack_ix = c->scopestack_ix;
314	PL_scopestack_max = c->scopestack_max;
315	PL_savestack = c->savestack;
316	PL_savestack_ix = c->savestack_ix;
317	PL_savestack_max = c->savestack_max;
318	#if !PERL_VERSION_ATLEAST (5,9,0)
319	PL_retstack = c->retstack;
320	PL_retstack_ix = c->retstack_ix;
321	PL_retstack_max = c->retstack_max;
322	#endif
323	PL_curpm = c->curpm;
324	PL_curcop = c->curcop;
325
326	if (c->defav) REPLACE_SV (GvAV (PL_defgv), c->defav);
327	if (c->defsv) REPLACE_SV (DEFSV , c->defsv);
328	if (c->errsv) REPLACE_SV (ERRSV , c->errsv);
329		405
330	{	406	{
331	dSP;	407	dSP;
332	CV *cv;	408	CV *cv;
333		409
334	/* now do the ugly restore mess */	410	/* now do the ugly restore mess */
335	while ((cv = (CV *)POPs))	411	while ((cv = (CV *)POPs))
336	{	412	{
337	AV padlist = (AV )POPs;
338
339	if (padlist)
340	{
341	put_padlist (cv); /* mark this padlist as available */	413	put_padlist (aTHX_ cv); /* mark this padlist as available */
342	CvPADLIST(cv) = padlist;	414	CvDEPTH (cv) = PTR2IV (POPs);
343	}	415	CvPADLIST (cv) = (AV *)POPs;
344
345	++CvDEPTH(cv);
346	}	416	}
347		417
348	PUTBACK;	418	PUTBACK;
349	}	419	}
350	}	420	}
351		421
352	static void	422	static void
353	save_state(Coro__State c, int flags)	423	save_perl (pTHX_ Coro__State c)
354	{	424	{
355	{	425	{
356	dSP;	426	dSP;
357	I32 cxix = cxstack_ix;	427	I32 cxix = cxstack_ix;
358	PERL_CONTEXT *ccstk = cxstack;	428	PERL_CONTEXT *ccstk = cxstack;
…		…
361	/*	431	/*
362	* the worst thing you can imagine happens first - we have to save	432	* the worst thing you can imagine happens first - we have to save
363	* (and reinitialize) all cv's in the whole callchain :(	433	* (and reinitialize) all cv's in the whole callchain :(
364	*/	434	*/
365		435
366	PUSHs (Nullsv);	436	XPUSHs (Nullsv);
367	/* this loop was inspired by pp_caller */	437	/* this loop was inspired by pp_caller */
368	for (;;)	438	for (;;)
369	{	439	{
370	while (cxix >= 0)	440	while (cxix >= 0)
371	{	441	{
372	PERL_CONTEXT *cx = &ccstk[cxix--];	442	PERL_CONTEXT *cx = &ccstk[cxix--];
373		443
374	if (CxTYPE(cx) == CXt_SUB)	444	if (CxTYPE (cx) == CXt_SUB \|\| CxTYPE (cx) == CXt_FORMAT)
375	{	445	{
376	CV *cv = cx->blk_sub.cv;	446	CV *cv = cx->blk_sub.cv;
		447
377	if (CvDEPTH(cv))	448	if (CvDEPTH (cv))
378	{	449	{
379	EXTEND (SP, CvDEPTH(cv)*2);	450	EXTEND (SP, 3);
380
381	while (--CvDEPTH(cv))
382	{
383	/* this tells the restore code to increment CvDEPTH */
384	PUSHs (Nullsv);
385	PUSHs ((SV *)cv);
386	}
387
388	PUSHs ((SV *)CvPADLIST(cv));	451	PUSHs ((SV *)CvPADLIST (cv));
		452	PUSHs (INT2PTR (SV *, CvDEPTH (cv)));
389	PUSHs ((SV *)cv);	453	PUSHs ((SV *)cv);
390		454
		455	CvDEPTH (cv) = 0;
391	get_padlist (cv);	456	get_padlist (aTHX_ cv);
392	}	457	}
393	}	458	}
394	#ifdef CXt_FORMAT
395	else if (CxTYPE(cx) == CXt_FORMAT)
396	{
397	/* I never used formats, so how should I know how these are implemented? */
398	/* my bold guess is as a simple, plain sub... */
399	croak ("CXt_FORMAT not yet handled. Don't switch coroutines from within formats");
400	}
401	#endif
402	}	459	}
403		460
404	if (top_si->si_type == PERLSI_MAIN)	461	if (top_si->si_type == PERLSI_MAIN)
405	break;	462	break;
406		463
407	top_si = top_si->si_prev;	464	top_si = top_si->si_prev;
408	ccstk = top_si->si_cxstack;	465	ccstk = top_si->si_cxstack;
409	cxix = top_si->si_cxix;	466	cxix = top_si->si_cxix;
410	}	467	}
411		468
412	PUTBACK;	469	PUTBACK;
413	}	470	}
414		471
415	c->defav = flags & TRANSFER_SAVE_DEFAV ? (AV *)SvREFCNT_inc (GvAV (PL_defgv)) : 0;	472	c->defav = GvAV (PL_defgv);
416	c->defsv = flags & TRANSFER_SAVE_DEFSV ? SvREFCNT_inc (DEFSV) : 0;	473	c->defsv = DEFSV;
417	c->errsv = flags & TRANSFER_SAVE_ERRSV ? SvREFCNT_inc (ERRSV) : 0;	474	c->errsv = ERRSV;
		475	c->irssv_sv = GvSV (irsgv);
418		476
419	c->dowarn = PL_dowarn;	477	#define VAR(name,type)c->name = PL_ ## name;
420	c->in_eval = PL_in_eval;	478	# include "state.h"
421		479	#undef VAR
422	c->curstackinfo = PL_curstackinfo;
423	c->curstack = PL_curstack;
424	c->mainstack = PL_mainstack;
425	c->stack_sp = PL_stack_sp;
426	c->op = PL_op;
427	c->curpad = PL_curpad;
428	c->comppad = PL_comppad;
429	c->compcv = PL_compcv;
430	c->stack_base = PL_stack_base;
431	c->stack_max = PL_stack_max;
432	c->tmps_stack = PL_tmps_stack;
433	c->tmps_floor = PL_tmps_floor;
434	c->tmps_ix = PL_tmps_ix;
435	c->tmps_max = PL_tmps_max;
436	c->markstack = PL_markstack;
437	c->markstack_ptr = PL_markstack_ptr;
438	c->markstack_max = PL_markstack_max;
439	c->scopestack = PL_scopestack;
440	c->scopestack_ix = PL_scopestack_ix;
441	c->scopestack_max = PL_scopestack_max;
442	c->savestack = PL_savestack;
443	c->savestack_ix = PL_savestack_ix;
444	c->savestack_max = PL_savestack_max;
445	#if !PERL_VERSION_ATLEAST (5,9,0)
446	c->retstack = PL_retstack;
447	c->retstack_ix = PL_retstack_ix;
448	c->retstack_max = PL_retstack_max;
449	#endif
450	c->curpm = PL_curpm;
451	c->curcop = PL_curcop;
452	}	480	}
453		481
454	/*	482	/*
455	* allocate various perl stacks. This is an exact copy	483	* allocate various perl stacks. This is an exact copy
456	* of perl.c:init_stacks, except that it uses less memory	484	* of perl.c:init_stacks, except that it uses less memory
457	* on the (sometimes correct) assumption that coroutines do	485	* on the (sometimes correct) assumption that coroutines do
458	* not usually need a lot of stackspace.	486	* not usually need a lot of stackspace.
459	*/	487	*/
		488	#if CORO_PREFER_PERL_FUNCTIONS
		489	# define coro_init_stacks init_stacks
		490	#else
460	static void	491	static void
461	coro_init_stacks ()	492	coro_init_stacks (pTHX)
462	{	493	{
463	PL_curstackinfo = new_stackinfo(96, 1024/sizeof(PERL_CONTEXT) - 1);	494	PL_curstackinfo = new_stackinfo(64, 6);
464	PL_curstackinfo->si_type = PERLSI_MAIN;	495	PL_curstackinfo->si_type = PERLSI_MAIN;
465	PL_curstack = PL_curstackinfo->si_stack;	496	PL_curstack = PL_curstackinfo->si_stack;
466	PL_mainstack = PL_curstack; /* remember in case we switch stacks */	497	PL_mainstack = PL_curstack; /* remember in case we switch stacks */
467		498
468	PL_stack_base = AvARRAY(PL_curstack);	499	PL_stack_base = AvARRAY(PL_curstack);
469	PL_stack_sp = PL_stack_base;	500	PL_stack_sp = PL_stack_base;
470	PL_stack_max = PL_stack_base + AvMAX(PL_curstack);	501	PL_stack_max = PL_stack_base + AvMAX(PL_curstack);
471		502
472	New(50,PL_tmps_stack,96,SV*);	503	New(50,PL_tmps_stack,64,SV*);
473	PL_tmps_floor = -1;	504	PL_tmps_floor = -1;
474	PL_tmps_ix = -1;	505	PL_tmps_ix = -1;
475	PL_tmps_max = 96;	506	PL_tmps_max = 64;
476		507
477	New(54,PL_markstack,16,I32);	508	New(54,PL_markstack,16,I32);
478	PL_markstack_ptr = PL_markstack;	509	PL_markstack_ptr = PL_markstack;
479	PL_markstack_max = PL_markstack + 16;	510	PL_markstack_max = PL_markstack + 16;
480		511
…		…
484		515
485	New(54,PL_scopestack,16,I32);	516	New(54,PL_scopestack,16,I32);
486	PL_scopestack_ix = 0;	517	PL_scopestack_ix = 0;
487	PL_scopestack_max = 16;	518	PL_scopestack_max = 16;
488		519
489	New(54,PL_savestack,96,ANY);	520	New(54,PL_savestack,64,ANY);
490	PL_savestack_ix = 0;	521	PL_savestack_ix = 0;
491	PL_savestack_max = 96;	522	PL_savestack_max = 64;
492		523
493	#if !PERL_VERSION_ATLEAST (5,9,0)	524	#if !PERL_VERSION_ATLEAST (5,9,0)
494	New(54,PL_retstack,8,OP*);	525	New(54,PL_retstack,4,OP*);
495	PL_retstack_ix = 0;	526	PL_retstack_ix = 0;
496	PL_retstack_max = 8;	527	PL_retstack_max = 4;
497	#endif	528	#endif
498	}	529	}
		530	#endif
499		531
500	/*	532	/*
501	* destroy the stacks, the callchain etc...	533	* destroy the stacks, the callchain etc...
502	*/	534	*/
503	static void	535	static void
504	coro_destroy_stacks()	536	coro_destroy_stacks (pTHX)
505	{	537	{
506	if (!IN_DESTRUCT)
507	{
508	/* is this ugly, I ask? */
509	LEAVE_SCOPE (0);
510
511	/* sure it is, but more important: is it correct?? :/ */
512	FREETMPS;
513
514	/POPSTACK_TO (PL_mainstack);//D//use/
515	}
516
517	while (PL_curstackinfo->si_next)	538	while (PL_curstackinfo->si_next)
518	PL_curstackinfo = PL_curstackinfo->si_next;	539	PL_curstackinfo = PL_curstackinfo->si_next;
519		540
520	while (PL_curstackinfo)	541	while (PL_curstackinfo)
521	{	542	{
522	PERL_SI *p = PL_curstackinfo->si_prev;	543	PERL_SI *p = PL_curstackinfo->si_prev;
523		544
524	{ /D//remove/
525	dSP;
526	SWITCHSTACK (PL_curstack, PL_curstackinfo->si_stack);
527	PUTBACK; /* possibly superfluous */
528	}
529
530	if (!IN_DESTRUCT)	545	if (!IN_DESTRUCT)
531	{
532	dounwind (-1);/D//remove/
533	SvREFCNT_dec (PL_curstackinfo->si_stack);	546	SvREFCNT_dec (PL_curstackinfo->si_stack);
534	}
535		547
536	Safefree (PL_curstackinfo->si_cxstack);	548	Safefree (PL_curstackinfo->si_cxstack);
537	Safefree (PL_curstackinfo);	549	Safefree (PL_curstackinfo);
538	PL_curstackinfo = p;	550	PL_curstackinfo = p;
539	}	551	}
…		…
545	#if !PERL_VERSION_ATLEAST (5,9,0)	557	#if !PERL_VERSION_ATLEAST (5,9,0)
546	Safefree (PL_retstack);	558	Safefree (PL_retstack);
547	#endif	559	#endif
548	}	560	}
549		561
550	static void	562	static size_t
551	setup_coro (struct coro *coro)	563	coro_rss (pTHX_ struct coro *coro)
		564	{
		565	size_t rss = sizeof (*coro);
		566
		567	if (coro->mainstack)
		568	{
		569	if (coro->flags & CF_RUNNING)
		570	{
		571	#define VAR(name,type)coro->name = PL_ ## name;
		572	# include "state.h"
		573	#undef VAR
		574	}
		575
		576	rss += sizeof (coro->curstackinfo);
		577	rss += sizeof (SV) + sizeof (struct xpvav) + (1 + AvFILL (coro->curstackinfo->si_stack)) * sizeof (SV *);
		578	rss += (coro->curstackinfo->si_cxmax + 1) * sizeof (PERL_CONTEXT);
		579	rss += sizeof (SV) + sizeof (struct xpvav) + (1 + AvFILL (coro->curstack)) * sizeof (SV *);
		580	rss += coro->tmps_max * sizeof (SV *);
		581	rss += (coro->markstack_max - coro->markstack_ptr) * sizeof (I32);
		582	rss += coro->scopestack_max * sizeof (I32);
		583	rss += coro->savestack_max * sizeof (ANY);
		584
		585	#if !PERL_VERSION_ATLEAST (5,9,0)
		586	rss += coro->retstack_max * sizeof (OP *);
		587	#endif
		588	}
		589
		590	return rss;
		591	}
		592
		593	/ coroutine stack handling **********************************************/
		594
		595	static void
		596	coro_setup (pTHX_ struct coro *coro)
552	{	597	{
553	/*	598	/*
554	* emulate part of the perl startup here.	599	* emulate part of the perl startup here.
555	*/	600	*/
556
557	coro_init_stacks ();	601	coro_init_stacks (aTHX);
558		602
		603	PL_runops = RUNOPS_DEFAULT;
		604	PL_curcop = &PL_compiling;
		605	PL_in_eval = EVAL_NULL;
559	PL_curcop = 0;	606	PL_comppad = 0;
560	PL_in_eval = 0;
561	PL_curpm = 0;	607	PL_curpm = 0;
		608	PL_localizing = 0;
		609	PL_dirty = 0;
		610	PL_restartop = 0;
		611
		612	GvSV (PL_defgv) = newSV (0);
		613	GvAV (PL_defgv) = coro->args; coro->args = 0;
		614	GvSV (PL_errgv) = newSV (0);
		615	GvSV (irsgv) = newSVpvn ("\n", 1); sv_magic (GvSV (irsgv), (SV *)irsgv, PERL_MAGIC_sv, "/", 0);
		616	PL_rs = newSVsv (GvSV (irsgv));
		617	PL_defoutgv = SvREFCNT_inc (stdoutgv);
		618
		619	ENTER; /* necessary e.g. for dounwind */
562		620
563	{	621	{
564	dSP;	622	dSP;
565	LOGOP myop;	623	LOGOP myop;
566		624
567	/* I have no idea why this is needed, but it is */
568	PUSHMARK (SP);
569
570	SvREFCNT_dec (GvAV (PL_defgv));
571	GvAV (PL_defgv) = coro->args; coro->args = 0;
572
573	Zero (&myop, 1, LOGOP);	625	Zero (&myop, 1, LOGOP);
574	myop.op_next = Nullop;	626	myop.op_next = Nullop;
575	myop.op_flags = OPf_WANT_VOID;	627	myop.op_flags = OPf_WANT_VOID;
576		628
		629	PUSHMARK (SP);
		630	XPUSHs (sv_2mortal (av_shift (GvAV (PL_defgv))));
		631	PUTBACK;
577	PL_op = (OP *)&myop;	632	PL_op = (OP *)&myop;
578
579	PUSHMARK (SP);
580	XPUSHs ((SV *)get_cv ("Coro::State::coro_init", FALSE));
581	PUTBACK;
582	PL_op = PL_ppaddr[OP_ENTERSUB](aTHX);	633	PL_op = PL_ppaddr[OP_ENTERSUB](aTHX);
583	SPAGAIN;	634	SPAGAIN;
584
585	ENTER; /* necessary e.g. for dounwind */
586	}	635	}
587	}	636	}
588		637
589	static void	638	static void
		639	coro_destroy (pTHX_ struct coro *coro)
		640	{
		641	if (!IN_DESTRUCT)
		642	{
		643	/* restore all saved variables and stuff */
		644	LEAVE_SCOPE (0);
		645	assert (PL_tmps_floor == -1);
		646
		647	/* free all temporaries */
		648	FREETMPS;
		649	assert (PL_tmps_ix == -1);
		650
		651	/* unwind all extra stacks */
		652	POPSTACK_TO (PL_mainstack);
		653
		654	/* unwind main stack */
		655	dounwind (-1);
		656	}
		657
		658	SvREFCNT_dec (GvSV (PL_defgv));
		659	SvREFCNT_dec (GvAV (PL_defgv));
		660	SvREFCNT_dec (GvSV (PL_errgv));
		661	SvREFCNT_dec (PL_defoutgv);
		662	SvREFCNT_dec (PL_rs);
		663	SvREFCNT_dec (GvSV (irsgv));
		664
		665	SvREFCNT_dec (coro->saved_deffh);
		666	//SvREFCNT_dec (coro->throw);
		667
		668	coro_destroy_stacks (aTHX);
		669	}
		670
		671	static void
590	free_coro_mortal ()	672	free_coro_mortal (pTHX)
591	{	673	{
592	if (coro_mortal)	674	if (coro_mortal)
593	{	675	{
594	SvREFCNT_dec (coro_mortal);	676	SvREFCNT_dec (coro_mortal);
595	coro_mortal = 0;	677	coro_mortal = 0;
596	}	678	}
597	}	679	}
598		680
		681	static int
		682	runops_trace (pTHX)
		683	{
		684	COP *oldcop = 0;
		685	int oldcxix = -2;
		686	struct coro coro = SvSTATE (coro_current); / trace cctx is tied to specific coro */
		687	coro_cctx *cctx = coro->cctx;
		688
		689	while ((PL_op = CALL_FPTR (PL_op->op_ppaddr) (aTHX)))
		690	{
		691	PERL_ASYNC_CHECK ();
		692
		693	if (cctx->flags & CC_TRACE_ALL)
		694	{
		695	if (PL_op->op_type == OP_LEAVESUB && cctx->flags & CC_TRACE_SUB)
		696	{
		697	PERL_CONTEXT *cx = &cxstack[cxstack_ix];
		698	SV bot, top;
		699	AV av = newAV (); / return values */
		700	SV **cb;
		701	dSP;
		702
		703	GV *gv = CvGV (cx->blk_sub.cv);
		704	SV *fullname = sv_2mortal (newSV (0));
		705	if (isGV (gv))
		706	gv_efullname3 (fullname, gv, 0);
		707
		708	bot = PL_stack_base + cx->blk_oldsp + 1;
		709	top = cx->blk_gimme == G_ARRAY ? SP + 1
		710	: cx->blk_gimme == G_SCALAR ? bot + 1
		711	: bot;
		712
		713	while (bot < top)
		714	av_push (av, SvREFCNT_inc (*bot++));
		715
		716	PL_runops = RUNOPS_DEFAULT;
		717	ENTER;
		718	SAVETMPS;
		719	EXTEND (SP, 3);
		720	PUSHMARK (SP);
		721	PUSHs (&PL_sv_no);
		722	PUSHs (fullname);
		723	PUSHs (sv_2mortal (newRV_noinc ((SV *)av)));
		724	PUTBACK;
		725	cb = hv_fetch ((HV *)SvRV (coro_current), "_trace_sub_cb", sizeof ("_trace_sub_cb") - 1, 0);
		726	if (cb) call_sv (*cb, G_KEEPERR \| G_EVAL \| G_VOID \| G_DISCARD);
		727	SPAGAIN;
		728	FREETMPS;
		729	LEAVE;
		730	PL_runops = runops_trace;
		731	}
		732
		733	if (oldcop != PL_curcop)
		734	{
		735	oldcop = PL_curcop;
		736
		737	if (PL_curcop != &PL_compiling)
		738	{
		739	SV **cb;
		740
		741	if (oldcxix != cxstack_ix && cctx->flags & CC_TRACE_SUB)
		742	{
		743	PERL_CONTEXT *cx = &cxstack[cxstack_ix];
		744
		745	if (CxTYPE (cx) == CXt_SUB && oldcxix < cxstack_ix)
		746	{
		747	runops_proc_t old_runops = PL_runops;
		748	dSP;
		749	GV *gv = CvGV (cx->blk_sub.cv);
		750	SV *fullname = sv_2mortal (newSV (0));
		751
		752	if (isGV (gv))
		753	gv_efullname3 (fullname, gv, 0);
		754
		755	PL_runops = RUNOPS_DEFAULT;
		756	ENTER;
		757	SAVETMPS;
		758	EXTEND (SP, 3);
		759	PUSHMARK (SP);
		760	PUSHs (&PL_sv_yes);
		761	PUSHs (fullname);
		762	PUSHs (cx->blk_sub.hasargs ? sv_2mortal (newRV_inc ((SV *)cx->blk_sub.argarray)) : &PL_sv_undef);
		763	PUTBACK;
		764	cb = hv_fetch ((HV *)SvRV (coro_current), "_trace_sub_cb", sizeof ("_trace_sub_cb") - 1, 0);
		765	if (cb) call_sv (*cb, G_KEEPERR \| G_EVAL \| G_VOID \| G_DISCARD);
		766	SPAGAIN;
		767	FREETMPS;
		768	LEAVE;
		769	PL_runops = runops_trace;
		770	}
		771
		772	oldcxix = cxstack_ix;
		773	}
		774
		775	if (cctx->flags & CC_TRACE_LINE)
		776	{
		777	dSP;
		778
		779	PL_runops = RUNOPS_DEFAULT;
		780	ENTER;
		781	SAVETMPS;
		782	EXTEND (SP, 3);
		783	PL_runops = RUNOPS_DEFAULT;
		784	PUSHMARK (SP);
		785	PUSHs (sv_2mortal (newSVpv (OutCopFILE (oldcop), 0)));
		786	PUSHs (sv_2mortal (newSViv (CopLINE (oldcop))));
		787	PUTBACK;
		788	cb = hv_fetch ((HV *)SvRV (coro_current), "_trace_line_cb", sizeof ("_trace_line_cb") - 1, 0);
		789	if (cb) call_sv (*cb, G_KEEPERR \| G_EVAL \| G_VOID \| G_DISCARD);
		790	SPAGAIN;
		791	FREETMPS;
		792	LEAVE;
		793	PL_runops = runops_trace;
		794	}
		795	}
		796	}
		797	}
		798	}
		799
		800	TAINT_NOT;
		801	return 0;
		802	}
		803
		804	/* inject a fake call to Coro::State::_cctx_init into the execution */
		805	/* _cctx_init should be careful, as it could be called at almost any time */
		806	/* during execution of a perl program */
599	static void NOINLINE	807	static void NOINLINE
600	prepare_cctx (coro_stack *cctx)	808	prepare_cctx (pTHX_ coro_cctx *cctx)
601	{	809	{
602	dSP;	810	dSP;
603	LOGOP myop;	811	LOGOP myop;
604		812
		813	PL_top_env = &PL_start_env;
		814
		815	if (cctx->flags & CC_TRACE)
		816	PL_runops = runops_trace;
		817
605	Zero (&myop, 1, LOGOP);	818	Zero (&myop, 1, LOGOP);
606	myop.op_next = PL_op;	819	myop.op_next = PL_op;
607	myop.op_flags = OPf_WANT_VOID;	820	myop.op_flags = OPf_WANT_VOID \| OPf_STACKED;
608
609	sv_setiv (get_sv ("Coro::State::cctx_stack", FALSE), PTR2IV (cctx));
610		821
611	PUSHMARK (SP);	822	PUSHMARK (SP);
		823	EXTEND (SP, 2);
		824	PUSHs (sv_2mortal (newSViv (PTR2IV (cctx))));
612	XPUSHs ((SV *)get_cv ("Coro::State::cctx_init", FALSE));	825	PUSHs ((SV *)get_cv ("Coro::State::_cctx_init", FALSE));
613	PUTBACK;	826	PUTBACK;
		827	PL_op = (OP *)&myop;
614	PL_restartop = PL_ppaddr[OP_ENTERSUB](aTHX);	828	PL_op = PL_ppaddr[OP_ENTERSUB](aTHX);
615	SPAGAIN;	829	SPAGAIN;
616	}	830	}
617		831
		832	/*
		833	* this is a _very_ stripped down perl interpreter ;)
		834	*/
618	static void	835	static void
619	coro_run (void *arg)	836	coro_run (void *arg)
620	{	837	{
		838	dTHX;
		839
621	/* coro_run is the alternative epilogue of transfer() */	840	/* coro_run is the alternative tail of transfer(), so unlock here. */
622	UNLOCK;	841	UNLOCK;
623		842
		843	/* we now skip the entersub that lead to transfer() */
		844	PL_op = PL_op->op_next;
		845
		846	/* inject a fake subroutine call to cctx_init */
		847	prepare_cctx (aTHX_ (coro_cctx *)arg);
		848
		849	/* somebody or something will hit me for both perl_run and PL_restartop */
		850	PL_restartop = PL_op;
		851	perl_run (PL_curinterp);
		852
624	/*	853	/*
625	* this is a _very_ stripped down perl interpreter ;)	854	* If perl-run returns we assume exit() was being called or the coro
		855	* fell off the end, which seems to be the only valid (non-bug)
		856	* reason for perl_run to return. We try to exit by jumping to the
		857	* bootstrap-time "top" top_env, as we cannot restore the "main"
		858	* coroutine as Coro has no such concept
626	*/	859	*/
627	PL_top_env = &PL_start_env;	860	PL_top_env = main_top_env;
628	/* inject call to cctx_init */	861	JMPENV_JUMP (2); /* I do not feel well about the hardcoded 2 at all */
629	prepare_cctx ((coro_stack *)arg);
630
631	/* somebody will hit me for both perl_run and PL_restartop */
632	perl_run (PL_curinterp);
633
634	fputs ("FATAL: C coroutine fell over the edge of the world, aborting. Did you call exit in a coroutine?\n", stderr);
635	abort ();
636	}	862	}
637		863
638	static coro_stack *	864	static coro_cctx *
639	stack_new ()	865	cctx_new ()
640	{	866	{
641	coro_stack *stack;	867	coro_cctx *cctx;
		868	void *stack_start;
		869	size_t stack_size;
642		870
		871	++cctx_count;
		872
643	New (0, stack, 1, coro_stack);	873	Newz (0, cctx, 1, coro_cctx);
644		874
645	#if HAVE_MMAP	875	#if HAVE_MMAP
646		876
647	stack->ssize = ((STACKSIZE * sizeof (long) + PAGESIZE - 1) / PAGESIZE + STACKGUARD) * PAGESIZE;	877	cctx->ssize = ((coro_stacksize * sizeof (long) + PAGESIZE - 1) / PAGESIZE + CORO_STACKGUARD) * PAGESIZE;
648	/* mmap suppsedly does allocate-on-write for us */	878	/* mmap supposedly does allocate-on-write for us */
649	stack->sptr = mmap (0, stack->ssize, PROT_EXEC\|PROT_READ\|PROT_WRITE, MAP_PRIVATE\|MAP_ANONYMOUS, 0, 0);	879	cctx->sptr = mmap (0, cctx->ssize, PROT_EXEC\|PROT_READ\|PROT_WRITE, MAP_PRIVATE\|MAP_ANONYMOUS, 0, 0);
650		880
651	if (stack->sptr == (void *)-1)	881	if (cctx->sptr != (void *)-1)
652	{
653	perror ("FATAL: unable to mmap stack for coroutine");
654	_exit (EXIT_FAILURE);
655	}	882	{
656
657	# if STACKGUARD	883	# if CORO_STACKGUARD
658	mprotect (stack->sptr, STACKGUARD * PAGESIZE, PROT_NONE);	884	mprotect (cctx->sptr, CORO_STACKGUARD * PAGESIZE, PROT_NONE);
659	# endif	885	# endif
660		886	stack_start = CORO_STACKGUARD * PAGESIZE + (char *)cctx->sptr;
661	#else	887	stack_size = cctx->ssize - CORO_STACKGUARD * PAGESIZE;
662		888	cctx->flags \|= CC_MAPPED;
663	stack->ssize = STACKSIZE * (long)sizeof (long);
664	New (0, stack->sptr, STACKSIZE, long);
665
666	if (!stack->sptr)
667	{	889	}
		890	else
		891	#endif
		892	{
		893	cctx->ssize = coro_stacksize * (long)sizeof (long);
		894	New (0, cctx->sptr, coro_stacksize, long);
		895
		896	if (!cctx->sptr)
		897	{
668	perror (stderr, "FATAL: unable to malloc stack for coroutine");	898	perror ("FATAL: unable to allocate stack for coroutine");
669	_exit (EXIT_FAILURE);	899	_exit (EXIT_FAILURE);
670	}	900	}
671		901
672	#endif	902	stack_start = cctx->sptr;
		903	stack_size = cctx->ssize;
		904	}
673		905
674	#if USE_VALGRIND	906	REGISTER_STACK (cctx, (char )stack_start, (char )stack_start + stack_size);
675	stack->valgrind_id = VALGRIND_STACK_REGISTER (
676	STACKGUARD * PAGESIZE + (char *)stack->sptr,
677	stack->ssize + (char *)stack->sptr
678	);
679	#endif
680
681	coro_create (&stack->cctx, coro_run, (void *)stack, stack->sptr, stack->ssize);	907	coro_create (&cctx->cctx, coro_run, (void *)cctx, stack_start, stack_size);
682		908
683	return stack;	909	return cctx;
684	}	910	}
685		911
686	static void	912	static void
687	stack_free (coro_stack *stack)	913	cctx_destroy (coro_cctx *cctx)
688	{	914	{
689	if (!stack)	915	if (!cctx)
690	return;	916	return;
691		917
		918	--cctx_count;
		919
692	#if USE_VALGRIND	920	#if CORO_USE_VALGRIND
693	VALGRIND_STACK_DEREGISTER (stack->valgrind_id);	921	VALGRIND_STACK_DEREGISTER (cctx->valgrind_id);
694	#endif	922	#endif
695		923
696	#if HAVE_MMAP	924	#if HAVE_MMAP
		925	if (cctx->flags & CC_MAPPED)
697	munmap (stack->sptr, stack->ssize);	926	munmap (cctx->sptr, cctx->ssize);
698	#else	927	else
		928	#endif
699	Safefree (stack->sptr);	929	Safefree (cctx->sptr);
700	#endif
701		930
702	Safefree (stack);	931	Safefree (cctx);
703	}	932	}
704		933
705	static coro_stack *stack_first;
706	static int cctx_count, cctx_idle;
707
708	static coro_stack *	934	static coro_cctx *
709	stack_get ()	935	cctx_get (pTHX)
710	{	936	{
711	coro_stack *stack;	937	while (cctx_first)
712
713	if (stack_first)
714	{	938	{
		939	coro_cctx *cctx = cctx_first;
		940	cctx_first = cctx->next;
715	--cctx_idle;	941	--cctx_idle;
716	stack = stack_first;	942
717	stack_first = stack->next;	943	if (cctx->ssize >= coro_stacksize && !(cctx->flags & CC_NOREUSE))
718	}	944	return cctx;
719	else	945
720	{	946	cctx_destroy (cctx);
721	++cctx_count;
722	stack = stack_new ();
723	PL_op = PL_op->op_next;
724	}	947	}
725		948
726	return stack;	949	return cctx_new ();
727	}	950	}
728		951
729	static void	952	static void
730	stack_put (coro_stack *stack)	953	cctx_put (coro_cctx *cctx)
731	{	954	{
		955	/* free another cctx if overlimit */
		956	if (cctx_idle >= MAX_IDLE_CCTX)
		957	{
		958	coro_cctx *first = cctx_first;
		959	cctx_first = first->next;
		960	--cctx_idle;
		961
		962	cctx_destroy (first);
		963	}
		964
732	++cctx_idle;	965	++cctx_idle;
733	stack->next = stack_first;	966	cctx->next = cctx_first;
734	stack_first = stack;	967	cctx_first = cctx;
735	}	968	}
736		969
737	/* never call directly, always through the coro_state_transfer global variable */	970	/ coroutine switching ***************************************************/
		971
738	static void NOINLINE	972	static void NOINLINE
		973	transfer_check (pTHX_ struct coro prev, struct coro next)
		974	{
		975	if (prev != next)
		976	{
		977	if (!(prev->flags & (CF_RUNNING \| CF_NEW)))
		978	croak ("Coro::State::transfer called with non-running/new prev Coro::State, but can only transfer from running or new states");
		979
		980	if (next->flags & CF_RUNNING)
		981	croak ("Coro::State::transfer called with running next Coro::State, but can only transfer to inactive states");
		982
		983	if (next->flags & CF_DESTROYED)
		984	croak ("Coro::State::transfer called with destroyed next Coro::State, but can only transfer to inactive states");
		985
		986	if (PL_lex_state != LEX_NOTPARSING)
		987	croak ("Coro::State::transfer called while parsing, but this is not supported");
		988	}
		989	}
		990
		991	/* always use the TRANSFER macro */
		992	static void NOINLINE
739	transfer (struct coro prev, struct coro next, int flags)	993	transfer (pTHX_ struct coro prev, struct coro next)
740	{	994	{
741	dSTACKLEVEL;	995	dSTACKLEVEL;
742		996
743	/* sometimes transfer is only called to set idle_sp */	997	/* sometimes transfer is only called to set idle_sp */
744	if (flags == TRANSFER_SET_STACKLEVEL)	998	if (!next)
		999	{
745	((coro_stack *)prev)->idle_sp = STACKLEVEL;	1000	((coro_cctx *)prev)->idle_sp = STACKLEVEL;
		1001	assert (((coro_cctx )prev)->idle_te = PL_top_env); / just for the side-effect when asserts are enabled */
		1002	}
746	else if (prev != next)	1003	else if (prev != next)
747	{	1004	{
748	coro_stack *prev__stack;	1005	coro_cctx *prev__cctx;
		1006
		1007	if (prev->flags & CF_NEW)
		1008	{
		1009	/* create a new empty context */
		1010	Newz (0, prev->cctx, 1, coro_cctx);
		1011	prev->flags &= ~CF_NEW;
		1012	prev->flags \|= CF_RUNNING;
		1013	}
		1014
		1015	prev->flags &= ~CF_RUNNING;
		1016	next->flags \|= CF_RUNNING;
749		1017
750	LOCK;	1018	LOCK;
751		1019
752	if (next->mainstack)	1020	if (next->flags & CF_NEW)
753	{	1021	{
754	/* coroutine already started */	1022	/* need to start coroutine */
755	SAVE (prev, flags);	1023	next->flags &= ~CF_NEW;
756	LOAD (next);	1024	/* first get rid of the old state */
		1025	save_perl (aTHX_ prev);
		1026	/* setup coroutine call */
		1027	coro_setup (aTHX_ next);
757	}	1028	}
758	else	1029	else
759	{	1030	{
760	/* need to start coroutine */	1031	/* coroutine already started */
761	/* first get rid of the old state */	1032	save_perl (aTHX_ prev);
762	SAVE (prev, -1);	1033	load_perl (aTHX_ next);
763	/* setup coroutine call */
764	setup_coro (next);
765	/* need a stack */
766	next->stack = 0;
767	}	1034	}
768		1035
769	if (!prev->stack)
770	/* create a new empty context */
771	Newz (0, prev->stack, 1, coro_stack);
772
773	prev__stack = prev->stack;	1036	prev__cctx = prev->cctx;
774		1037
775	/* possibly "free" the stack */	1038	/* possibly "free" the cctx */
776	if (prev__stack->idle_sp == STACKLEVEL)	1039	if (prev__cctx->idle_sp == STACKLEVEL && !(prev__cctx->flags & CC_TRACE))
777	{	1040	{
778	stack_put (prev__stack);	1041	/* I assume that STACKLEVEL is a stronger indicator than PL_top_env changes */
		1042	assert (("ERROR: current top_env must equal previous top_env", PL_top_env == prev__cctx->idle_te));
		1043
779	prev->stack = 0;	1044	prev->cctx = 0;
		1045
		1046	cctx_put (prev__cctx);
780	}	1047	}
781		1048
		1049	++next->usecount;
		1050
782	if (!next->stack)	1051	if (!next->cctx)
783	next->stack = stack_get ();	1052	next->cctx = cctx_get (aTHX);
784		1053
785	if (prev__stack != next->stack)	1054	if (prev__cctx != next->cctx)
786	{	1055	{
787	prev__stack->top_env = PL_top_env;	1056	prev__cctx->top_env = PL_top_env;
788	PL_top_env = next->stack->top_env;	1057	PL_top_env = next->cctx->top_env;
789	coro_transfer (&prev__stack->cctx, &next->stack->cctx);	1058	coro_transfer (&prev__cctx->cctx, &next->cctx->cctx);
790	}	1059	}
791		1060
792	free_coro_mortal ();	1061	free_coro_mortal (aTHX);
793
794	UNLOCK;	1062	UNLOCK;
795	}	1063	}
796	}	1064	}
797		1065
798	struct transfer_args	1066	struct transfer_args
799	{	1067	{
800	struct coro prev, next;	1068	struct coro prev, next;
801	int flags;
802	};	1069	};
803		1070
804	#define TRANSFER(ta) transfer ((ta).prev, (ta).next, (ta).flags)	1071	#define TRANSFER(ta) transfer (aTHX_ (ta).prev, (ta).next)
		1072	#define TRANSFER_CHECK(ta) transfer_check (aTHX_ (ta).prev, (ta).next)
805		1073
		1074	/ high level stuff ******************************************************/
		1075
806	static void	1076	static int
807	coro_state_destroy (struct coro *coro)	1077	coro_state_destroy (pTHX_ struct coro *coro)
808	{	1078	{
809	if (coro->refcnt--)	1079	if (coro->flags & CF_DESTROYED)
810	return;	1080	return 0;
		1081
		1082	coro->flags \|= CF_DESTROYED;
		1083
		1084	if (coro->flags & CF_READY)
		1085	{
		1086	/* reduce nready, as destroying a ready coro effectively unreadies it */
		1087	/* alternative: look through all ready queues and remove the coro */
		1088	LOCK;
		1089	--coro_nready;
		1090	UNLOCK;
		1091	}
		1092	else
		1093	coro->flags \|= CF_READY; /* make sure it is NOT put into the readyqueue */
811		1094
812	if (coro->mainstack && coro->mainstack != main_mainstack)	1095	if (coro->mainstack && coro->mainstack != main_mainstack)
813	{	1096	{
814	struct coro temp;	1097	struct coro temp;
815		1098
816	SAVE ((&temp), TRANSFER_SAVE_ALL);	1099	if (coro->flags & CF_RUNNING)
817	LOAD (coro);	1100	croak ("FATAL: tried to destroy currently running coroutine");
818		1101
819	coro_destroy_stacks ();	1102	save_perl (aTHX_ &temp);
		1103	load_perl (aTHX_ coro);
820		1104
		1105	coro_destroy (aTHX_ coro);
		1106
821	LOAD ((&temp)); /* this will get rid of defsv etc.. */	1107	load_perl (aTHX_ &temp); /* this will get rid of defsv etc.. */
822		1108
823	coro->mainstack = 0;	1109	coro->mainstack = 0;
824	}	1110	}
825		1111
826	stack_free (coro->stack);	1112	cctx_destroy (coro->cctx);
827	SvREFCNT_dec (coro->args);	1113	SvREFCNT_dec (coro->args);
828	Safefree (coro);	1114
		1115	if (coro->next) coro->next->prev = coro->prev;
		1116	if (coro->prev) coro->prev->next = coro->next;
		1117	if (coro == coro_first) coro_first = coro->next;
		1118
		1119	return 1;
829	}	1120	}
830		1121
831	static int	1122	static int
832	coro_state_clear (pTHX_ SV sv, MAGIC mg)	1123	coro_state_free (pTHX_ SV sv, MAGIC mg)
833	{	1124	{
834	struct coro coro = (struct coro )mg->mg_ptr;	1125	struct coro coro = (struct coro )mg->mg_ptr;
835	mg->mg_ptr = 0;	1126	mg->mg_ptr = 0;
836		1127
		1128	coro->hv = 0;
		1129
		1130	if (--coro->refcnt < 0)
		1131	{
837	coro_state_destroy (coro);	1132	coro_state_destroy (aTHX_ coro);
		1133	Safefree (coro);
		1134	}
838		1135
839	return 0;	1136	return 0;
840	}	1137	}
841		1138
842	static int	1139	static int
…		…
849	return 0;	1146	return 0;
850	}	1147	}
851		1148
852	static MGVTBL coro_state_vtbl = {	1149	static MGVTBL coro_state_vtbl = {
853	0, 0, 0, 0,	1150	0, 0, 0, 0,
854	coro_state_clear,	1151	coro_state_free,
855	0,	1152	0,
856	#ifdef MGf_DUP	1153	#ifdef MGf_DUP
857	coro_state_dup,	1154	coro_state_dup,
858	#else	1155	#else
859	# define MGf_DUP 0	1156	# define MGf_DUP 0
860	#endif	1157	#endif
861	};	1158	};
862		1159
863	static struct coro *
864	SvSTATE (SV *coro)
865	{
866	HV *stash;
867	MAGIC *mg;
868
869	if (SvROK (coro))
870	coro = SvRV (coro);
871
872	stash = SvSTASH (coro);
873	if (stash != coro_stash && stash != coro_state_stash)
874	{
875	/* very slow, but rare, check */
876	if (!sv_derived_from (sv_2mortal (newRV_inc (coro)), "Coro::State"))
877	croak ("Coro::State object required");
878	}
879
880	mg = SvMAGIC (coro);
881	assert (mg->mg_type == PERL_MAGIC_ext);
882	return (struct coro *)mg->mg_ptr;
883	}
884
885	static void	1160	static void
886	prepare_transfer (struct transfer_args ta, SV prev, SV *next, int flags)	1161	prepare_transfer (pTHX_ struct transfer_args ta, SV prev_sv, SV *next_sv)
887	{	1162	{
888	ta->prev = SvSTATE (prev);	1163	ta->prev = SvSTATE (prev_sv);
889	ta->next = SvSTATE (next);	1164	ta->next = SvSTATE (next_sv);
890	ta->flags = flags;	1165	TRANSFER_CHECK (*ta);
891	}	1166	}
892		1167
893	static void	1168	static void
894	api_transfer (SV prev, SV next, int flags)	1169	api_transfer (SV prev_sv, SV next_sv)
895	{	1170	{
896	dTHX;	1171	dTHX;
897	struct transfer_args ta;	1172	struct transfer_args ta;
898		1173
899	prepare_transfer (&ta, prev, next, flags);	1174	prepare_transfer (aTHX_ &ta, prev_sv, next_sv);
900	TRANSFER (ta);	1175	TRANSFER (ta);
901	}	1176	}
902		1177
903	/ Coro ******************************************************************/	1178	/ Coro ******************************************************************/
904		1179
905	#define PRIO_MAX 3
906	#define PRIO_HIGH 1
907	#define PRIO_NORMAL 0
908	#define PRIO_LOW -1
909	#define PRIO_IDLE -3
910	#define PRIO_MIN -4
911
912	/* for Coro.pm */
913	static GV coro_current, coro_idle;
914	static AV *coro_ready [PRIO_MAX-PRIO_MIN+1];
915	static int coro_nready;
916
917	static void	1180	static void
918	coro_enq (SV *sv)	1181	coro_enq (pTHX_ SV *coro_sv)
919	{	1182	{
920	int prio;
921
922	if (SvTYPE (sv) != SVt_PVHV)
923	croak ("Coro::ready tried to enqueue something that is not a coroutine");
924
925	prio = SvSTATE (sv)->prio;
926
927	av_push (coro_ready [prio - PRIO_MIN], sv);	1183	av_push (coro_ready [SvSTATE (coro_sv)->prio - PRIO_MIN], coro_sv);
928	coro_nready++;
929	}	1184	}
930		1185
931	static SV *	1186	static SV *
932	coro_deq (int min_prio)	1187	coro_deq (pTHX_ int min_prio)
933	{	1188	{
934	int prio = PRIO_MAX - PRIO_MIN;	1189	int prio = PRIO_MAX - PRIO_MIN;
935		1190
936	min_prio -= PRIO_MIN;	1191	min_prio -= PRIO_MIN;
937	if (min_prio < 0)	1192	if (min_prio < 0)
938	min_prio = 0;	1193	min_prio = 0;
939		1194
940	for (prio = PRIO_MAX - PRIO_MIN + 1; --prio >= min_prio; )	1195	for (prio = PRIO_MAX - PRIO_MIN + 1; --prio >= min_prio; )
941	if (AvFILLp (coro_ready [prio]) >= 0)	1196	if (AvFILLp (coro_ready [prio]) >= 0)
942	{
943	coro_nready--;
944	return av_shift (coro_ready [prio]);	1197	return av_shift (coro_ready [prio]);
945	}
946		1198
947	return 0;	1199	return 0;
948	}	1200	}
949		1201
950	static void	1202	static int
951	api_ready (SV *coro)	1203	api_ready (SV *coro_sv)
952	{	1204	{
953	dTHX;	1205	dTHX;
		1206	struct coro *coro;
954		1207
955	if (SvROK (coro))	1208	if (SvROK (coro_sv))
956	coro = SvRV (coro);	1209	coro_sv = SvRV (coro_sv);
		1210
		1211	coro = SvSTATE (coro_sv);
		1212
		1213	if (coro->flags & CF_READY)
		1214	return 0;
		1215
		1216	coro->flags \|= CF_READY;
957		1217
958	LOCK;	1218	LOCK;
959	coro_enq (SvREFCNT_inc (coro));	1219	coro_enq (aTHX_ SvREFCNT_inc (coro_sv));
		1220	++coro_nready;
960	UNLOCK;	1221	UNLOCK;
961	}
962		1222
		1223	return 1;
		1224	}
		1225
963	static void	1226	static int
		1227	api_is_ready (SV *coro_sv)
		1228	{
		1229	dTHX;
		1230	return !!(SvSTATE (coro_sv)->flags & CF_READY);
		1231	}
		1232
		1233	static void
964	prepare_schedule (struct transfer_args *ta)	1234	prepare_schedule (pTHX_ struct transfer_args *ta)
965	{	1235	{
966	SV current, prev, *next;	1236	SV prev_sv, next_sv;
967
968	current = GvSV (coro_current);
969		1237
970	for (;;)	1238	for (;;)
971	{	1239	{
972	LOCK;	1240	LOCK;
973	next = coro_deq (PRIO_MIN);	1241	next_sv = coro_deq (aTHX_ PRIO_MIN);
		1242
		1243	/* nothing to schedule: call the idle handler */
		1244	if (!next_sv)
		1245	{
		1246	dSP;
		1247	UNLOCK;
		1248
		1249	ENTER;
		1250	SAVETMPS;
		1251
		1252	PUSHMARK (SP);
		1253	PUTBACK;
		1254	call_sv (get_sv ("Coro::idle", FALSE), G_DISCARD);
		1255
		1256	FREETMPS;
		1257	LEAVE;
		1258	continue;
		1259	}
		1260
		1261	ta->next = SvSTATE (next_sv);
		1262
		1263	/* cannot transfer to destroyed coros, skip and look for next */
		1264	if (ta->next->flags & CF_DESTROYED)
		1265	{
		1266	UNLOCK;
		1267	SvREFCNT_dec (next_sv);
		1268	/* coro_nready is already taken care of by destroy */
		1269	continue;
		1270	}
		1271
		1272	--coro_nready;
974	UNLOCK;	1273	UNLOCK;
975
976	if (next)
977	break;	1274	break;
978
979	{
980	dSP;
981
982	ENTER;
983	SAVETMPS;
984
985	PUSHMARK (SP);
986	PUTBACK;
987	call_sv (GvSV (coro_idle), G_DISCARD);
988
989	FREETMPS;
990	LEAVE;
991	}	1275	}
992	}
993
994	prev = SvRV (current);
995	SvRV (current) = next;
996		1276
997	/* free this only after the transfer */	1277	/* free this only after the transfer */
		1278	prev_sv = SvRV (coro_current);
		1279	ta->prev = SvSTATE (prev_sv);
		1280	TRANSFER_CHECK (*ta);
		1281	assert (ta->next->flags & CF_READY);
		1282	ta->next->flags &= ~CF_READY;
		1283	SvRV_set (coro_current, next_sv);
		1284
998	LOCK;	1285	LOCK;
999	free_coro_mortal ();	1286	free_coro_mortal (aTHX);
		1287	coro_mortal = prev_sv;
1000	UNLOCK;	1288	UNLOCK;
1001	coro_mortal = prev;
1002
1003	ta->prev = SvSTATE (prev);
1004	ta->next = SvSTATE (next);
1005	ta->flags = TRANSFER_SAVE_ALL;
1006	}	1289	}
1007		1290
1008	static void	1291	static void
1009	prepare_cede (struct transfer_args *ta)	1292	prepare_cede (pTHX_ struct transfer_args *ta)
1010	{	1293	{
1011	LOCK;	1294	api_ready (coro_current);
1012	coro_enq (SvREFCNT_inc (SvRV (GvSV (coro_current))));
1013	UNLOCK;
1014
1015	prepare_schedule (ta);	1295	prepare_schedule (aTHX_ ta);
		1296	}
		1297
		1298	static int
		1299	prepare_cede_notself (pTHX_ struct transfer_args *ta)
		1300	{
		1301	if (coro_nready)
		1302	{
		1303	SV *prev = SvRV (coro_current);
		1304	prepare_schedule (aTHX_ ta);
		1305	api_ready (prev);
		1306	return 1;
		1307	}
		1308	else
		1309	return 0;
1016	}	1310	}
1017		1311
1018	static void	1312	static void
1019	api_schedule (void)	1313	api_schedule (void)
1020	{	1314	{
1021	dTHX;	1315	dTHX;
1022	struct transfer_args ta;	1316	struct transfer_args ta;
1023		1317
1024	prepare_schedule (&ta);	1318	prepare_schedule (aTHX_ &ta);
1025	TRANSFER (ta);	1319	TRANSFER (ta);
1026	}	1320	}
1027		1321
1028	static void	1322	static int
1029	api_cede (void)	1323	api_cede (void)
1030	{	1324	{
1031	dTHX;	1325	dTHX;
1032	struct transfer_args ta;	1326	struct transfer_args ta;
1033		1327
1034	prepare_cede (&ta);	1328	prepare_cede (aTHX_ &ta);
		1329
		1330	if (ta.prev != ta.next)
		1331	{
1035	TRANSFER (ta);	1332	TRANSFER (ta);
		1333	return 1;
		1334	}
		1335	else
		1336	return 0;
1036	}	1337	}
1037		1338
		1339	static int
		1340	api_cede_notself (void)
		1341	{
		1342	dTHX;
		1343	struct transfer_args ta;
		1344
		1345	if (prepare_cede_notself (aTHX_ &ta))
		1346	{
		1347	TRANSFER (ta);
		1348	return 1;
		1349	}
		1350	else
		1351	return 0;
		1352	}
		1353
		1354	static void
		1355	api_trace (SV *coro_sv, int flags)
		1356	{
		1357	dTHX;
		1358	struct coro *coro = SvSTATE (coro_sv);
		1359
		1360	if (flags & CC_TRACE)
		1361	{
		1362	if (!coro->cctx)
		1363	coro->cctx = cctx_new ();
		1364	else if (!(coro->cctx->flags & CC_TRACE))
		1365	croak ("cannot enable tracing on coroutine with custom stack");
		1366
		1367	coro->cctx->flags \|= CC_NOREUSE \| (flags & (CC_TRACE \| CC_TRACE_ALL));
		1368	}
		1369	else if (coro->cctx && coro->cctx->flags & CC_TRACE)
		1370	{
		1371	coro->cctx->flags &= ~(CC_TRACE \| CC_TRACE_ALL);
		1372
		1373	if (coro->flags & CF_RUNNING)
		1374	PL_runops = RUNOPS_DEFAULT;
		1375	else
		1376	coro->runops = RUNOPS_DEFAULT;
		1377	}
		1378	}
		1379
1038	MODULE = Coro::State PACKAGE = Coro::State	1380	MODULE = Coro::State PACKAGE = Coro::State PREFIX = api_
1039		1381
1040	PROTOTYPES: DISABLE	1382	PROTOTYPES: DISABLE
1041		1383
1042	BOOT:	1384	BOOT:
1043	{	1385	{
1044	#ifdef USE_ITHREADS	1386	#ifdef USE_ITHREADS
1045	MUTEX_INIT (&coro_mutex);	1387	MUTEX_INIT (&coro_mutex);
1046	#endif	1388	#endif
1047	BOOT_PAGESIZE;	1389	BOOT_PAGESIZE;
1048		1390
		1391	irsgv = gv_fetchpv ("/" , GV_ADD\|GV_NOTQUAL, SVt_PV);
		1392	stdoutgv = gv_fetchpv ("STDOUT", GV_ADD\|GV_NOTQUAL, SVt_PVIO);
		1393
1049	coro_state_stash = gv_stashpv ("Coro::State", TRUE);	1394	coro_state_stash = gv_stashpv ("Coro::State", TRUE);
1050		1395
1051	newCONSTSUB (coro_state_stash, "SAVE_DEFAV", newSViv (TRANSFER_SAVE_DEFAV));	1396	newCONSTSUB (coro_state_stash, "CC_TRACE" , newSViv (CC_TRACE));
1052	newCONSTSUB (coro_state_stash, "SAVE_DEFSV", newSViv (TRANSFER_SAVE_DEFSV));	1397	newCONSTSUB (coro_state_stash, "CC_TRACE_SUB" , newSViv (CC_TRACE_SUB));
1053	newCONSTSUB (coro_state_stash, "SAVE_ERRSV", newSViv (TRANSFER_SAVE_ERRSV));	1398	newCONSTSUB (coro_state_stash, "CC_TRACE_LINE", newSViv (CC_TRACE_LINE));
		1399	newCONSTSUB (coro_state_stash, "CC_TRACE_ALL" , newSViv (CC_TRACE_ALL));
1054		1400
1055	main_mainstack = PL_mainstack;	1401	main_mainstack = PL_mainstack;
		1402	main_top_env = PL_top_env;
		1403
		1404	while (main_top_env->je_prev)
		1405	main_top_env = main_top_env->je_prev;
1056		1406
1057	coroapi.ver = CORO_API_VERSION;	1407	coroapi.ver = CORO_API_VERSION;
1058	coroapi.transfer = api_transfer;	1408	coroapi.transfer = api_transfer;
1059		1409
1060	assert (("PRIO_NORMAL must be 0", !PRIO_NORMAL));	1410	assert (("PRIO_NORMAL must be 0", !PRIO_NORMAL));
…		…
1067	struct coro *coro;	1417	struct coro *coro;
1068	HV *hv;	1418	HV *hv;
1069	int i;	1419	int i;
1070		1420
1071	Newz (0, coro, 1, struct coro);	1421	Newz (0, coro, 1, struct coro);
1072	coro->args = newAV ();	1422	coro->args = newAV ();
		1423	coro->flags = CF_NEW;
1073		1424
		1425	if (coro_first) coro_first->prev = coro;
		1426	coro->next = coro_first;
		1427	coro_first = coro;
		1428
1074	hv = newHV ();	1429	coro->hv = hv = newHV ();
1075	sv_magicext ((SV )hv, 0, PERL_MAGIC_ext, &coro_state_vtbl, (char )coro, 0)->mg_flags \|= MGf_DUP;	1430	sv_magicext ((SV )hv, 0, PERL_MAGIC_ext, &coro_state_vtbl, (char )coro, 0)->mg_flags \|= MGf_DUP;
1076	RETVAL = sv_bless (newRV_noinc ((SV *)hv), gv_stashpv (klass, 1));	1431	RETVAL = sv_bless (newRV_noinc ((SV *)hv), gv_stashpv (klass, 1));
1077		1432
		1433	av_extend (coro->args, items - 1);
		1434
1078	for (i = 1; i < items; i++)	1435	for (i = 1; i < items; i++)
1079	av_push (coro->args, newSVsv (ST (i)));	1436	av_push (coro->args, newSVsv (ST (i)));
1080
1081	/coro->mainstack = 0; //actual work is done inside transfer /
1082	/coro->stack = 0;/
1083	}	1437	}
1084	OUTPUT:	1438	OUTPUT:
1085	RETVAL	1439	RETVAL
1086		1440
		1441	# these not obviously related functions are all rolled into the same xs
		1442	# function to increase chances that they all will call transfer with the same
		1443	# stack offset
1087	void	1444	void
1088	_set_stacklevel (...)	1445	_set_stacklevel (...)
1089	ALIAS:	1446	ALIAS:
1090	Coro::State::transfer = 1	1447	Coro::State::transfer = 1
1091	Coro::schedule = 2	1448	Coro::schedule = 2
1092	Coro::cede = 3	1449	Coro::cede = 3
1093	Coro::Cont::yield = 4	1450	Coro::cede_notself = 4
1094	CODE:	1451	CODE:
1095	{	1452	{
1096	struct transfer_args ta;	1453	struct transfer_args ta;
1097		1454
1098	switch (ix)	1455	switch (ix)
1099	{	1456	{
1100	case 0:	1457	case 0:
1101	ta.prev = (struct coro )INT2PTR (coro_stack , SvIV (ST (0)));	1458	ta.prev = (struct coro )INT2PTR (coro_cctx , SvIV (ST (0)));
1102	ta.next = 0;	1459	ta.next = 0;
1103	ta.flags = TRANSFER_SET_STACKLEVEL;
1104	break;	1460	break;
1105		1461
1106	case 1:	1462	case 1:
1107	if (items != 3)	1463	if (items != 2)
1108	croak ("Coro::State::transfer(prev,next,flags) expects three arguments, not %d", items);	1464	croak ("Coro::State::transfer (prev,next) expects two arguments, not %d", items);
1109		1465
1110	prepare_transfer (&ta, ST (0), ST (1), SvIV (ST (2)));	1466	prepare_transfer (aTHX_ &ta, ST (0), ST (1));
1111	break;	1467	break;
1112		1468
1113	case 2:	1469	case 2:
1114	prepare_schedule (&ta);	1470	prepare_schedule (aTHX_ &ta);
1115	break;	1471	break;
1116		1472
1117	case 3:	1473	case 3:
1118	prepare_cede (&ta);	1474	prepare_cede (aTHX_ &ta);
1119	break;	1475	break;
1120		1476
1121	case 4:	1477	case 4:
1122	{	1478	if (!prepare_cede_notself (aTHX_ &ta))
1123	SV *yieldstack;	1479	XSRETURN_EMPTY;
1124	SV *sv;
1125	AV *defav = GvAV (PL_defgv);
1126		1480
1127	yieldstack = *hv_fetch (
1128	(HV *)SvRV (GvSV (coro_current)),
1129	"yieldstack", sizeof ("yieldstack") - 1,
1130	0
1131	);
1132
1133	/* set up @_ -- ugly */
1134	av_clear (defav);
1135	av_fill (defav, items - 1);
1136	while (items--)
1137	av_store (defav, items, SvREFCNT_inc (ST(items)));
1138
1139	sv = av_pop ((AV *)SvRV (yieldstack));
1140	ta.prev = SvSTATE (av_fetch ((AV )SvRV (sv), 0, 0));
1141	ta.next = SvSTATE (av_fetch ((AV )SvRV (sv), 1, 0));
1142	ta.flags = 0;
1143	SvREFCNT_dec (sv);
1144	}
1145	break;	1481	break;
1146
1147	}	1482	}
1148		1483
		1484	BARRIER;
1149	TRANSFER (ta);	1485	TRANSFER (ta);
1150	}
1151		1486
1152	void	1487	if (GIMME_V != G_VOID && ta.next != ta.prev)
1153	_clone_state_from (SV dst, SV src)	1488	XSRETURN_YES;
		1489	}
		1490
		1491	bool
		1492	_destroy (SV *coro_sv)
1154	CODE:	1493	CODE:
1155	{	1494	RETVAL = coro_state_destroy (aTHX_ SvSTATE (coro_sv));
1156	struct coro *coro_src = SvSTATE (src);	1495	OUTPUT:
1157		1496	RETVAL
1158	sv_unmagic (SvRV (dst), PERL_MAGIC_ext);
1159
1160	++coro_src->refcnt;
1161	sv_magicext (SvRV (dst), 0, PERL_MAGIC_ext, &coro_state_vtbl, (char *)coro_src, 0)->mg_flags \|= MGf_DUP;
1162	}
1163		1497
1164	void	1498	void
1165	_exit (code)	1499	_exit (code)
1166	int code	1500	int code
1167	PROTOTYPE: $	1501	PROTOTYPE: $
1168	CODE:	1502	CODE:
1169	_exit (code);	1503	_exit (code);
1170		1504
		1505	int
		1506	cctx_stacksize (int new_stacksize = 0)
		1507	CODE:
		1508	RETVAL = coro_stacksize;
		1509	if (new_stacksize)
		1510	coro_stacksize = new_stacksize;
		1511	OUTPUT:
		1512	RETVAL
		1513
		1514	int
		1515	cctx_count ()
		1516	CODE:
		1517	RETVAL = cctx_count;
		1518	OUTPUT:
		1519	RETVAL
		1520
		1521	int
		1522	cctx_idle ()
		1523	CODE:
		1524	RETVAL = cctx_idle;
		1525	OUTPUT:
		1526	RETVAL
		1527
		1528	void
		1529	list ()
		1530	PPCODE:
		1531	{
		1532	struct coro *coro;
		1533	for (coro = coro_first; coro; coro = coro->next)
		1534	if (coro->hv)
		1535	XPUSHs (sv_2mortal (newRV_inc ((SV *)coro->hv)));
		1536	}
		1537
		1538	void
		1539	call (Coro::State coro, SV *coderef)
		1540	ALIAS:
		1541	eval = 1
		1542	CODE:
		1543	{
		1544	if (coro->mainstack)
		1545	{
		1546	struct coro temp;
		1547	Zero (&temp, 1, struct coro);
		1548
		1549	if (!(coro->flags & CF_RUNNING))
		1550	{
		1551	save_perl (aTHX_ &temp);
		1552	load_perl (aTHX_ coro);
		1553	}
		1554
		1555	{
		1556	dSP;
		1557	ENTER;
		1558	SAVETMPS;
		1559	PUSHMARK (SP);
		1560	PUTBACK;
		1561	if (ix)
		1562	eval_sv (coderef, 0);
		1563	else
		1564	call_sv (coderef, G_KEEPERR \| G_EVAL \| G_VOID \| G_DISCARD);
		1565	SPAGAIN;
		1566	FREETMPS;
		1567	LEAVE;
		1568	PUTBACK;
		1569	}
		1570
		1571	if (!(coro->flags & CF_RUNNING))
		1572	{
		1573	save_perl (aTHX_ coro);
		1574	load_perl (aTHX_ &temp);
		1575	}
		1576	}
		1577	}
		1578
		1579	SV *
		1580	is_ready (Coro::State coro)
		1581	PROTOTYPE: $
		1582	ALIAS:
		1583	is_ready = CF_READY
		1584	is_running = CF_RUNNING
		1585	is_new = CF_NEW
		1586	is_destroyed = CF_DESTROYED
		1587	CODE:
		1588	RETVAL = boolSV (coro->flags & ix);
		1589	OUTPUT:
		1590	RETVAL
		1591
		1592	void
		1593	api_trace (SV *coro, int flags = CC_TRACE \| CC_TRACE_SUB)
		1594
		1595	SV *
		1596	has_stack (Coro::State coro)
		1597	PROTOTYPE: $
		1598	CODE:
		1599	RETVAL = boolSV (!!coro->cctx);
		1600	OUTPUT:
		1601	RETVAL
		1602
		1603	int
		1604	is_traced (Coro::State coro)
		1605	PROTOTYPE: $
		1606	CODE:
		1607	RETVAL = (coro->cctx ? coro->cctx->flags : 0) & CC_TRACE_ALL;
		1608	OUTPUT:
		1609	RETVAL
		1610
		1611	IV
		1612	rss (Coro::State coro)
		1613	PROTOTYPE: $
		1614	ALIAS:
		1615	usecount = 1
		1616	CODE:
		1617	switch (ix)
		1618	{
		1619	case 0: RETVAL = coro_rss (aTHX_ coro); break;
		1620	case 1: RETVAL = coro->usecount; break;
		1621	}
		1622	OUTPUT:
		1623	RETVAL
		1624
		1625
1171	MODULE = Coro::State PACKAGE = Coro	1626	MODULE = Coro::State PACKAGE = Coro
1172		1627
1173	BOOT:	1628	BOOT:
1174	{	1629	{
1175	int i;	1630	int i;
		1631
		1632	sv_pool_rss = get_sv ("Coro::POOL_RSS" , TRUE);
		1633	sv_pool_size = get_sv ("Coro::POOL_SIZE" , TRUE);
		1634	av_async_pool = get_av ("Coro::async_pool", TRUE);
		1635
		1636	coro_current = get_sv ("Coro::current", FALSE);
		1637	SvREADONLY_on (coro_current);
1176		1638
1177	coro_stash = gv_stashpv ("Coro", TRUE);	1639	coro_stash = gv_stashpv ("Coro", TRUE);
1178		1640
1179	newCONSTSUB (coro_stash, "PRIO_MAX", newSViv (PRIO_MAX));	1641	newCONSTSUB (coro_stash, "PRIO_MAX", newSViv (PRIO_MAX));
1180	newCONSTSUB (coro_stash, "PRIO_HIGH", newSViv (PRIO_HIGH));	1642	newCONSTSUB (coro_stash, "PRIO_HIGH", newSViv (PRIO_HIGH));
1181	newCONSTSUB (coro_stash, "PRIO_NORMAL", newSViv (PRIO_NORMAL));	1643	newCONSTSUB (coro_stash, "PRIO_NORMAL", newSViv (PRIO_NORMAL));
1182	newCONSTSUB (coro_stash, "PRIO_LOW", newSViv (PRIO_LOW));	1644	newCONSTSUB (coro_stash, "PRIO_LOW", newSViv (PRIO_LOW));
1183	newCONSTSUB (coro_stash, "PRIO_IDLE", newSViv (PRIO_IDLE));	1645	newCONSTSUB (coro_stash, "PRIO_IDLE", newSViv (PRIO_IDLE));
1184	newCONSTSUB (coro_stash, "PRIO_MIN", newSViv (PRIO_MIN));	1646	newCONSTSUB (coro_stash, "PRIO_MIN", newSViv (PRIO_MIN));
1185		1647
1186	coro_current = gv_fetchpv ("Coro::current", TRUE, SVt_PV);
1187	coro_idle = gv_fetchpv ("Coro::idle" , TRUE, SVt_PV);
1188
1189	for (i = PRIO_MAX - PRIO_MIN + 1; i--; )	1648	for (i = PRIO_MAX - PRIO_MIN + 1; i--; )
1190	coro_ready[i] = newAV ();	1649	coro_ready[i] = newAV ();
1191		1650
1192	{	1651	{
1193	SV *sv = perl_get_sv("Coro::API", 1);	1652	SV *sv = perl_get_sv("Coro::API", 1);
1194		1653
1195	coroapi.schedule = api_schedule;	1654	coroapi.schedule = api_schedule;
1196	coroapi.cede = api_cede;	1655	coroapi.cede = api_cede;
		1656	coroapi.cede_notself = api_cede_notself;
1197	coroapi.ready = api_ready;	1657	coroapi.ready = api_ready;
		1658	coroapi.is_ready = api_is_ready;
1198	coroapi.nready = &coro_nready;	1659	coroapi.nready = &coro_nready;
1199	coroapi.current = coro_current;	1660	coroapi.current = coro_current;
1200		1661
1201	GCoroAPI = &coroapi;	1662	GCoroAPI = &coroapi;
1202	sv_setiv (sv, (IV)&coroapi);	1663	sv_setiv (sv, (IV)&coroapi);
1203	SvREADONLY_on (sv);	1664	SvREADONLY_on (sv);
1204	}	1665	}
1205	}	1666	}
		1667
		1668	void
		1669	_set_current (SV *current)
		1670	PROTOTYPE: $
		1671	CODE:
		1672	SvREFCNT_dec (SvRV (coro_current));
		1673	SvRV_set (coro_current, SvREFCNT_inc (SvRV (current)));
1206		1674
1207	int	1675	int
1208	prio (Coro::State coro, int newprio = 0)	1676	prio (Coro::State coro, int newprio = 0)
1209	ALIAS:	1677	ALIAS:
1210	nice = 1	1678	nice = 1
…		…
1213	RETVAL = coro->prio;	1681	RETVAL = coro->prio;
1214		1682
1215	if (items > 1)	1683	if (items > 1)
1216	{	1684	{
1217	if (ix)	1685	if (ix)
1218	newprio += coro->prio;	1686	newprio = coro->prio - newprio;
1219		1687
1220	if (newprio < PRIO_MIN) newprio = PRIO_MIN;	1688	if (newprio < PRIO_MIN) newprio = PRIO_MIN;
1221	if (newprio > PRIO_MAX) newprio = PRIO_MAX;	1689	if (newprio > PRIO_MAX) newprio = PRIO_MAX;
1222		1690
1223	coro->prio = newprio;	1691	coro->prio = newprio;
1224	}	1692	}
1225	}	1693	}
		1694	OUTPUT:
		1695	RETVAL
1226		1696
1227	void	1697	SV *
1228	ready (SV *self)	1698	ready (SV *self)
1229	PROTOTYPE: $	1699	PROTOTYPE: $
1230	CODE:	1700	CODE:
1231	api_ready (self);	1701	RETVAL = boolSV (api_ready (self));
		1702	OUTPUT:
		1703	RETVAL
1232		1704
1233	int	1705	int
1234	nready (...)	1706	nready (...)
1235	PROTOTYPE:	1707	PROTOTYPE:
1236	CODE:	1708	CODE:
1237	RETVAL = coro_nready;	1709	RETVAL = coro_nready;
1238	OUTPUT:	1710	OUTPUT:
1239	RETVAL	1711	RETVAL
1240		1712
		1713	# for async_pool speedup
		1714	void
		1715	_pool_1 (SV *cb)
		1716	CODE:
		1717	{
		1718	struct coro *coro = SvSTATE (coro_current);
		1719	HV hv = (HV )SvRV (coro_current);
		1720	AV *defav = GvAV (PL_defgv);
		1721	SV *invoke = hv_delete (hv, "_invoke", sizeof ("_invoke") - 1, 0);
		1722	AV *invoke_av;
		1723	int i, len;
		1724
		1725	if (!invoke)
		1726	croak ("\3terminate\2\n");
		1727
		1728	SvREFCNT_dec (coro->saved_deffh);
		1729	coro->saved_deffh = SvREFCNT_inc ((SV *)PL_defoutgv);
		1730
		1731	hv_store (hv, "desc", sizeof ("desc") - 1,
		1732	newSVpvn ("[async_pool]", sizeof ("[async_pool]") - 1), 0);
		1733
		1734	invoke_av = (AV *)SvRV (invoke);
		1735	len = av_len (invoke_av);
		1736
		1737	sv_setsv (cb, AvARRAY (invoke_av)[0]);
		1738
		1739	if (len > 0)
		1740	{
		1741	av_fill (defav, len - 1);
		1742	for (i = 0; i < len; ++i)
		1743	av_store (defav, i, SvREFCNT_inc (AvARRAY (invoke_av)[i + 1]));
		1744	}
		1745
		1746	SvREFCNT_dec (invoke);
		1747	}
		1748
		1749	void
		1750	_pool_2 (SV *cb)
		1751	CODE:
		1752	{
		1753	struct coro *coro = SvSTATE (coro_current);
		1754
		1755	sv_setsv (cb, &PL_sv_undef);
		1756
		1757	SvREFCNT_dec ((SV )PL_defoutgv); PL_defoutgv = (GV )coro->saved_deffh;
		1758	coro->saved_deffh = 0;
		1759
		1760	if (coro_rss (aTHX_ coro) > SvIV (sv_pool_rss)
		1761	\|\| av_len (av_async_pool) + 1 >= SvIV (sv_pool_size))
		1762	croak ("\3terminate\2\n");
		1763
		1764	av_clear (GvAV (PL_defgv));
		1765	hv_store ((HV *)SvRV (coro_current), "desc", sizeof ("desc") - 1,
		1766	newSVpvn ("[async_pool idle]", sizeof ("[async_pool idle]") - 1), 0);
		1767
		1768	coro->prio = 0;
		1769
		1770	if (coro->cctx && (coro->cctx->flags & CC_TRACE))
		1771	api_trace (coro_current, 0);
		1772
		1773	av_push (av_async_pool, newSVsv (coro_current));
		1774	}
		1775
		1776
1241	MODULE = Coro::State PACKAGE = Coro::AIO	1777	MODULE = Coro::State PACKAGE = Coro::AIO
1242		1778
1243	SV *	1779	SV *
1244	_get_state ()	1780	_get_state ()
1245	CODE:	1781	CODE:
1246	{	1782	{
1247	struct {	1783	struct io_state *data;
1248	int errorno;
1249	int laststype;
1250	int laststatval;
1251	Stat_t statcache;
1252	} data;
1253		1784
		1785	RETVAL = newSV (sizeof (struct io_state));
		1786	data = (struct io_state *)SvPVX (RETVAL);
		1787	SvCUR_set (RETVAL, sizeof (struct io_state));
		1788	SvPOK_only (RETVAL);
		1789
1254	data.errorno = errno;	1790	data->errorno = errno;
1255	data.laststype = PL_laststype;	1791	data->laststype = PL_laststype;
1256	data.laststatval = PL_laststatval;	1792	data->laststatval = PL_laststatval;
1257	data.statcache = PL_statcache;	1793	data->statcache = PL_statcache;
1258
1259	RETVAL = newSVpvn ((char *)&data, sizeof data);
1260	}	1794	}
1261	OUTPUT:	1795	OUTPUT:
1262	RETVAL	1796	RETVAL
1263		1797
1264	void	1798	void
1265	_set_state (char *data_)	1799	_set_state (char *data_)
1266	PROTOTYPE: $	1800	PROTOTYPE: $
1267	CODE:	1801	CODE:
1268	{	1802	{
1269	struct {	1803	struct io_state data = (void )data_;
1270	int errorno;
1271	int laststype;
1272	int laststatval;
1273	Stat_t statcache;
1274	} data = (void )data_;
1275		1804
1276	errno = data->errorno;	1805	errno = data->errorno;
1277	PL_laststype = data->laststype;	1806	PL_laststype = data->laststype;
1278	PL_laststatval = data->laststatval;	1807	PL_laststatval = data->laststatval;
1279	PL_statcache = data->statcache;	1808	PL_statcache = data->statcache;
1280	}	1809	}
		1810

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Comparing Coro/Coro/State.xs (file contents): Revision 1.105 by root, Mon Nov 27 02:01:33 2006 UTC vs. Revision 1.192 by root, Fri Oct 5 21:51:40 2007 UTC

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Comparing Coro/Coro/State.xs (file contents):
Revision 1.105 by root, Mon Nov 27 02:01:33 2006 UTC vs.
Revision 1.192 by root, Fri Oct 5 21:51:40 2007 UTC