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

Comparing Coro/Coro/State.xs (file contents):
Revision 1.100 by root, Mon Nov 27 00:07:49 2006 UTC vs.
Revision 1.175 by root, Sun Sep 30 13:43:45 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"
		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
		38	#if CORO_USE_VALGRIND
		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)
		43	#endif
		44
		45	/* the maximum number of idle cctx that will be pooled */
		46	#define MAX_IDLE_CCTX 8
8		47
9	#define PERL_VERSION_ATLEAST(a,b,c) \	48	#define PERL_VERSION_ATLEAST(a,b,c) \
10	(PERL_REVISION > (a) \	49	(PERL_REVISION > (a) \
11	\|\| (PERL_REVISION == (a) \	50	\|\| (PERL_REVISION == (a) \
12	&& (PERL_VERSION > (b) \	51	&& (PERL_VERSION > (b) \
31	# ifndef IS_PADCONST	70	# ifndef IS_PADCONST
32	# define IS_PADCONST(v) 0	71	# define IS_PADCONST(v) 0
33	# endif	72	# endif
34	#endif	73	#endif
35		74
36	#include <stdio.h>	75	/* 5.8.7 */
37	#include <errno.h>	76	#ifndef SvRV_set
		77	# define SvRV_set(s,v) SvRV(s) = (v)
		78	#endif
38		79
39	#if !__i386 && !__x86_64 && !__powerpc && !__m68k && !__alpha && !__mips && !__sparc64	80	#if !__i386 && !__x86_64 && !__powerpc && !__m68k && !__alpha && !__mips && !__sparc64
40	# undef STACKGUARD	81	# undef CORO_STACKGUARD
41	#endif
42
43	#ifndef STACKGUARD
44	# define STACKGUARD 0
45	#endif
46
47	#ifdef HAVE_MMAP
48	# include <unistd.h>
49	# include <sys/mman.h>
50	# ifndef MAP_ANONYMOUS
51	# ifdef MAP_ANON
52	# define MAP_ANONYMOUS MAP_ANON
53	# else
54	# undef HAVE_MMAP
55	# endif
56	# endif	82	#endif
57	# include <limits.h>	83
58	# ifndef PAGESIZE	84	#ifndef CORO_STACKGUARD
59	# define PAGESIZE pagesize	85	# define CORO_STACKGUARD 0
60	# define BOOT_PAGESIZE pagesize = sysconf (_SC_PAGESIZE)
61	static long pagesize;
62	# else
63	# define BOOT_PAGESIZE
64	# endif	86	#endif
65	#endif
66		87
67	/* The next macro should declare a variable stacklevel that contains and approximation	88	/* prefer perl internal functions over our own? */
68	* to the current C stack pointer. Its property is that it changes with each call	89	#ifndef CORO_PREFER_PERL_FUNCTIONS
69	* and should be unique. */	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. */
70	#define dSTACKLEVEL int stacklevel	95	#define dSTACKLEVEL volatile char stacklevel
71	#define STACKLEVEL ((void *)&stacklevel)	96	#define STACKLEVEL ((void *)&stacklevel)
72		97
73	#define IN_DESTRUCT (PL_main_cv == Nullcv)	98	#define IN_DESTRUCT (PL_main_cv == Nullcv)
74		99
75	#if __GNUC__ >= 3	100	#if __GNUC__ >= 3
76	# define attribute(x) __attribute__(x)	101	# define attribute(x) __attribute__(x)
		102	# define BARRIER __asm__ __volatile__ ("" : : : "memory")
77	#else	103	#else
78	# define attribute(x)	104	# define attribute(x)
		105	# define BARRIER
79	#endif	106	#endif
80		107
81	#define NOINLINE attribute ((noinline))	108	#define NOINLINE attribute ((noinline))
82		109
83	#include "CoroAPI.h"	110	#include "CoroAPI.h"
84
85	#define TRANSFER_SET_STACKLEVEL 0x8bfbfbfb /* magic cookie */
86		111
87	#ifdef USE_ITHREADS	112	#ifdef USE_ITHREADS
88	static perl_mutex coro_mutex;	113	static perl_mutex coro_mutex;
89	# define LOCK do { MUTEX_LOCK (&coro_mutex); } while (0)	114	# define LOCK do { MUTEX_LOCK (&coro_mutex); } while (0)
90	# define UNLOCK do { MUTEX_UNLOCK (&coro_mutex); } while (0)	115	# define UNLOCK do { MUTEX_UNLOCK (&coro_mutex); } while (0)
91	#else	116	#else
92	# define LOCK (void)0	117	# define LOCK (void)0
93	# define UNLOCK (void)0	118	# define UNLOCK (void)0
94	#endif	119	#endif
95		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;
96	static struct CoroAPI coroapi;	131	static struct CoroAPI coroapi;
97	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;
98	static HV coro_state_stash, coro_stash;	134	static HV coro_state_stash, coro_stash;
99	static SV coro_mortal; / will be freed after next transfer */	135	static SV coro_mortal; / will be freed after next transfer */
100		136
		137	/* async_pool helper stuff */
		138	static SV *sv_pool_rss;
		139	static SV *sv_pool_size;
		140	static AV *av_async_pool;
		141
		142	static struct coro_cctx *cctx_first;
		143	static int cctx_count, cctx_idle;
		144
		145	enum {
		146	CC_MAPPED = 0x01,
		147	CC_NOREUSE = 0x02, /* throw this away after tracing */
		148	CC_TRACE = 0x04,
		149	CC_TRACE_SUB = 0x08, /* trace sub calls */
		150	CC_TRACE_LINE = 0x10, /* trace each statement */
		151	CC_TRACE_ALL = CC_TRACE_SUB \| CC_TRACE_LINE,
		152	};
		153
101	/* this is a structure representing a c-level coroutine */	154	/* this is a structure representing a c-level coroutine */
102	typedef struct coro_stack {	155	typedef struct coro_cctx {
103	struct coro_stack *next;	156	struct coro_cctx *next;
104		157
105	/* the stack */	158	/* the stack */
106	void *sptr;	159	void *sptr;
107	long ssize; /* positive == mmap, otherwise malloc */	160	size_t ssize;
108		161
109	/* cpu state */	162	/* cpu state */
110	void idle_sp; / sp of top-level transfer/schedule/cede call */	163	void idle_sp; / sp of top-level transfer/schedule/cede call */
		164	JMPENV idle_te; / same as idle_sp, but for top_env, TODO: remove once stable */
111	JMPENV *top_env;	165	JMPENV *top_env;
112	coro_context cctx;	166	coro_context cctx;
113	} coro_stack;	167
		168	#if CORO_USE_VALGRIND
		169	int valgrind_id;
		170	#endif
		171	unsigned char flags;
		172	} coro_cctx;
		173
		174	enum {
		175	CF_RUNNING = 0x0001, /* coroutine is running */
		176	CF_READY = 0x0002, /* coroutine is ready */
		177	CF_NEW = 0x0004, /* has never been switched to */
		178	CF_DESTROYED = 0x0008, /* coroutine data has been freed */
		179	};
114		180
115	/* this is a structure representing a perl-level coroutine */	181	/* this is a structure representing a perl-level coroutine */
116	struct coro {	182	struct coro {
117	/* the c coroutine allocated to this perl coroutine, if any */	183	/* the c coroutine allocated to this perl coroutine, if any */
118	coro_stack *stack;	184	coro_cctx *cctx;
119		185
120	/* data associated with this coroutine (initial args) */	186	/* data associated with this coroutine (initial args) */
121	AV *args;	187	AV *args;
122	int refcnt;	188	int refcnt;
		189	int save; /* CORO_SAVE flags */
		190	int flags; /* CF_ flags */
123		191
124	/* optionally saved, might be zero */	192	/* optionally saved, might be zero */
125	AV *defav;	193	AV defav; / @_ */
126	SV *defsv;	194	SV defsv; / $_ */
127	SV *errsv;	195	SV errsv; / $@ */
		196	GV deffh; / default filehandle */
		197	SV irssv; / $/ */
		198	SV irssv_sv; / real $/ cache */
128		199
129	/* saved global state not related to stacks */	200	#define VAR(name,type) type name;
130	U8 dowarn;	201	# include "state.h"
131	I32 in_eval;	202	#undef VAR
132		203
133	/* the stacks and related info (callchain etc..) */	204	/* statistics */
134	PERL_SI *curstackinfo;	205	int usecount; /* number of switches to this coro */
135	AV *curstack;
136	AV *mainstack;
137	SV **stack_sp;
138	OP *op;
139	SV **curpad;
140	AV *comppad;
141	CV *compcv;
142	SV **stack_base;
143	SV **stack_max;
144	SV **tmps_stack;
145	I32 tmps_floor;
146	I32 tmps_ix;
147	I32 tmps_max;
148	I32 *markstack;
149	I32 *markstack_ptr;
150	I32 *markstack_max;
151	I32 *scopestack;
152	I32 scopestack_ix;
153	I32 scopestack_max;
154	ANY *savestack;
155	I32 savestack_ix;
156	I32 savestack_max;
157	OP **retstack;
158	I32 retstack_ix;
159	I32 retstack_max;
160	PMOP *curpm;
161	COP *curcop;
162		206
163	/* coro process data */	207	/* coro process data */
164	int prio;	208	int prio;
		209
		210	/* linked list */
		211	struct coro next, prev;
		212	HV hv; / the perl hash associated with this coro, if any */
165	};	213	};
166		214
167	typedef struct coro *Coro__State;	215	typedef struct coro *Coro__State;
168	typedef struct coro *Coro__State_or_hashref;	216	typedef struct coro *Coro__State_or_hashref;
169		217
		218	/ Coro ******************************************************************/
		219
		220	#define PRIO_MAX 3
		221	#define PRIO_HIGH 1
		222	#define PRIO_NORMAL 0
		223	#define PRIO_LOW -1
		224	#define PRIO_IDLE -3
		225	#define PRIO_MIN -4
		226
		227	/* for Coro.pm */
		228	static SV *coro_current;
		229	static AV *coro_ready [PRIO_MAX-PRIO_MIN+1];
		230	static int coro_nready;
		231	static struct coro *coro_first;
		232
		233	/ lowlevel stuff ********************************************************/
		234
170	static AV *	235	static AV *
171	coro_clone_padlist (CV *cv)	236	coro_clone_padlist (pTHX_ CV *cv)
172	{	237	{
173	AV *padlist = CvPADLIST (cv);	238	AV *padlist = CvPADLIST (cv);
174	AV newpadlist, newpad;	239	AV newpadlist, newpad;
175		240
176	newpadlist = newAV ();	241	newpadlist = newAV ();
…		…
188		253
189	return newpadlist;	254	return newpadlist;
190	}	255	}
191		256
192	static void	257	static void
193	free_padlist (AV *padlist)	258	free_padlist (pTHX_ AV *padlist)
194	{	259	{
195	/* may be during global destruction */	260	/* may be during global destruction */
196	if (SvREFCNT (padlist))	261	if (SvREFCNT (padlist))
197	{	262	{
198	I32 i = AvFILLp (padlist);	263	I32 i = AvFILLp (padlist);
…		…
219	AV *padlist;	284	AV *padlist;
220	AV av = (AV )mg->mg_obj;	285	AV av = (AV )mg->mg_obj;
221		286
222	/* casting is fun. */	287	/* casting is fun. */
223	while (&PL_sv_undef != (SV )(padlist = (AV )av_pop (av)))	288	while (&PL_sv_undef != (SV )(padlist = (AV )av_pop (av)))
224	free_padlist (padlist);	289	free_padlist (aTHX_ padlist);
225		290
226	SvREFCNT_dec (av);	291	SvREFCNT_dec (av);
227		292
228	return 0;	293	return 0;
229	}	294	}
230		295
231	#define PERL_MAGIC_coro PERL_MAGIC_ext	296	#define PERL_MAGIC_coro PERL_MAGIC_ext
232		297
233	static MGVTBL vtbl_coro = {0, 0, 0, 0, coro_cv_free};	298	static MGVTBL vtbl_coro = {0, 0, 0, 0, coro_cv_free};
		299
		300	#define CORO_MAGIC(cv) \
		301	SvMAGIC (cv) \
		302	? SvMAGIC (cv)->mg_type == PERL_MAGIC_coro \
		303	? SvMAGIC (cv) \
		304	: mg_find ((SV *)cv, PERL_MAGIC_coro) \
		305	: 0
		306
		307	static struct coro *
		308	SvSTATE_ (pTHX_ SV *coro)
		309	{
		310	HV *stash;
		311	MAGIC *mg;
		312
		313	if (SvROK (coro))
		314	coro = SvRV (coro);
		315
		316	if (SvTYPE (coro) != SVt_PVHV)
		317	croak ("Coro::State object required");
		318
		319	stash = SvSTASH (coro);
		320	if (stash != coro_stash && stash != coro_state_stash)
		321	{
		322	/* very slow, but rare, check */
		323	if (!sv_derived_from (sv_2mortal (newRV_inc (coro)), "Coro::State"))
		324	croak ("Coro::State object required");
		325	}
		326
		327	mg = CORO_MAGIC (coro);
		328	return (struct coro *)mg->mg_ptr;
		329	}
		330
		331	#define SvSTATE(sv) SvSTATE_ (aTHX_ (sv))
234		332
235	/* the next two functions merely cache the padlists */	333	/* the next two functions merely cache the padlists */
236	static void	334	static void
237	get_padlist (CV *cv)	335	get_padlist (pTHX_ CV *cv)
238	{	336	{
239	MAGIC mg = mg_find ((SV )cv, PERL_MAGIC_coro);	337	MAGIC *mg = CORO_MAGIC (cv);
		338	AV *av;
240		339
241	if (mg && AvFILLp ((AV *)mg->mg_obj) >= 0)	340	if (mg && AvFILLp ((av = (AV *)mg->mg_obj)) >= 0)
242	CvPADLIST (cv) = (AV )av_pop ((AV )mg->mg_obj);	341	CvPADLIST (cv) = (AV *)AvARRAY (av)[AvFILLp (av)--];
243	else	342	else
244	{	343	{
245	#if 0	344	#if CORO_PREFER_PERL_FUNCTIONS
246	/* this is probably cleaner, but also slower? */	345	/* this is probably cleaner, but also slower? */
247	CV *cp = Perl_cv_clone (cv);	346	CV *cp = Perl_cv_clone (cv);
248	CvPADLIST (cv) = CvPADLIST (cp);	347	CvPADLIST (cv) = CvPADLIST (cp);
249	CvPADLIST (cp) = 0;	348	CvPADLIST (cp) = 0;
250	SvREFCNT_dec (cp);	349	SvREFCNT_dec (cp);
251	#else	350	#else
252	CvPADLIST (cv) = coro_clone_padlist (cv);	351	CvPADLIST (cv) = coro_clone_padlist (aTHX_ cv);
253	#endif	352	#endif
254	}	353	}
255	}	354	}
256		355
257	static void	356	static void
258	put_padlist (CV *cv)	357	put_padlist (pTHX_ CV *cv)
259	{	358	{
260	MAGIC mg = mg_find ((SV )cv, PERL_MAGIC_coro);	359	MAGIC *mg = CORO_MAGIC (cv);
		360	AV *av;
261		361
262	if (!mg)	362	if (!mg)
263	{	363	{
264	sv_magic ((SV *)cv, 0, PERL_MAGIC_coro, 0, 0);	364	sv_magic ((SV *)cv, 0, PERL_MAGIC_coro, 0, 0);
265	mg = mg_find ((SV *)cv, PERL_MAGIC_coro);	365	mg = mg_find ((SV *)cv, PERL_MAGIC_coro);
266	mg->mg_virtual = &vtbl_coro;	366	mg->mg_virtual = &vtbl_coro;
267	mg->mg_obj = (SV *)newAV ();	367	mg->mg_obj = (SV *)newAV ();
268	}	368	}
269		369
270	av_push ((AV )mg->mg_obj, (SV )CvPADLIST (cv));	370	av = (AV *)mg->mg_obj;
		371
		372	if (AvFILLp (av) >= AvMAX (av))
		373	av_extend (av, AvMAX (av) + 1);
		374
		375	AvARRAY (av)[++AvFILLp (av)] = (SV *)CvPADLIST (cv);
271	}	376	}
		377
		378	/ load & save, init *****************************************************/
272		379
273	#define SB do {	380	#define SB do {
274	#define SE } while (0)	381	#define SE } while (0)
275		382
276	#define LOAD(state) load_state((state));
277	#define SAVE(state,flags) save_state((state),(flags));
278
279	#define REPLACE_SV(sv,val) SB SvREFCNT_dec(sv); (sv) = (val); (val) = 0; SE	383	#define REPLACE_SV(sv,val) SB SvREFCNT_dec (sv); (sv) = (val); (val) = 0; SE
280		384
281	static void	385	static void
282	load_state(Coro__State c)	386	load_perl (pTHX_ Coro__State c)
283	{	387	{
284	PL_dowarn = c->dowarn;	388	#define VAR(name,type) PL_ ## name = c->name;
285	PL_in_eval = c->in_eval;	389	# include "state.h"
286		390	#undef VAR
287	PL_curstackinfo = c->curstackinfo;
288	PL_curstack = c->curstack;
289	PL_mainstack = c->mainstack;
290	PL_stack_sp = c->stack_sp;
291	PL_op = c->op;
292	PL_curpad = c->curpad;
293	PL_comppad = c->comppad;
294	PL_compcv = c->compcv;
295	PL_stack_base = c->stack_base;
296	PL_stack_max = c->stack_max;
297	PL_tmps_stack = c->tmps_stack;
298	PL_tmps_floor = c->tmps_floor;
299	PL_tmps_ix = c->tmps_ix;
300	PL_tmps_max = c->tmps_max;
301	PL_markstack = c->markstack;
302	PL_markstack_ptr = c->markstack_ptr;
303	PL_markstack_max = c->markstack_max;
304	PL_scopestack = c->scopestack;
305	PL_scopestack_ix = c->scopestack_ix;
306	PL_scopestack_max = c->scopestack_max;
307	PL_savestack = c->savestack;
308	PL_savestack_ix = c->savestack_ix;
309	PL_savestack_max = c->savestack_max;
310	#if !PERL_VERSION_ATLEAST (5,9,0)
311	PL_retstack = c->retstack;
312	PL_retstack_ix = c->retstack_ix;
313	PL_retstack_max = c->retstack_max;
314	#endif
315	PL_curpm = c->curpm;
316	PL_curcop = c->curcop;
317		391
318	if (c->defav) REPLACE_SV (GvAV (PL_defgv), c->defav);	392	if (c->defav) REPLACE_SV (GvAV (PL_defgv), c->defav);
319	if (c->defsv) REPLACE_SV (DEFSV , c->defsv);	393	if (c->defsv) REPLACE_SV (DEFSV , c->defsv);
320	if (c->errsv) REPLACE_SV (ERRSV , c->errsv);	394	if (c->errsv) REPLACE_SV (ERRSV , c->errsv);
		395	if (c->deffh) REPLACE_SV (PL_defoutgv , c->deffh);
		396
		397	if (c->irssv)
		398	{
		399	if (c->irssv == PL_rs \|\| sv_eq (PL_rs, c->irssv))
		400	{
		401	SvREFCNT_dec (c->irssv);
		402	c->irssv = 0;
		403	}
		404	else
		405	{
		406	REPLACE_SV (PL_rs, c->irssv);
		407	if (!c->irssv_sv) c->irssv_sv = get_sv ("/", 0);
		408	sv_setsv (c->irssv_sv, PL_rs);
		409	}
		410	}
321		411
322	{	412	{
323	dSP;	413	dSP;
324	CV *cv;	414	CV *cv;
325		415
326	/* now do the ugly restore mess */	416	/* now do the ugly restore mess */
327	while ((cv = (CV *)POPs))	417	while ((cv = (CV *)POPs))
328	{	418	{
329	AV padlist = (AV )POPs;
330
331	if (padlist)
332	{
333	put_padlist (cv); /* mark this padlist as available */	419	put_padlist (aTHX_ cv); /* mark this padlist as available */
334	CvPADLIST(cv) = padlist;	420	CvDEPTH (cv) = PTR2IV (POPs);
335	}	421	CvPADLIST (cv) = (AV *)POPs;
336
337	++CvDEPTH(cv);
338	}	422	}
339		423
340	PUTBACK;	424	PUTBACK;
341	}	425	}
342	}	426	}
343		427
344	static void	428	static void
345	save_state(Coro__State c, int flags)	429	save_perl (pTHX_ Coro__State c)
346	{	430	{
347	{	431	{
348	dSP;	432	dSP;
349	I32 cxix = cxstack_ix;	433	I32 cxix = cxstack_ix;
350	PERL_CONTEXT *ccstk = cxstack;	434	PERL_CONTEXT *ccstk = cxstack;
…		…
353	/*	437	/*
354	* the worst thing you can imagine happens first - we have to save	438	* the worst thing you can imagine happens first - we have to save
355	* (and reinitialize) all cv's in the whole callchain :(	439	* (and reinitialize) all cv's in the whole callchain :(
356	*/	440	*/
357		441
358	PUSHs (Nullsv);	442	XPUSHs (Nullsv);
359	/* this loop was inspired by pp_caller */	443	/* this loop was inspired by pp_caller */
360	for (;;)	444	for (;;)
361	{	445	{
362	while (cxix >= 0)	446	while (cxix >= 0)
363	{	447	{
364	PERL_CONTEXT *cx = &ccstk[cxix--];	448	PERL_CONTEXT *cx = &ccstk[cxix--];
365		449
366	if (CxTYPE(cx) == CXt_SUB)	450	if (CxTYPE (cx) == CXt_SUB \|\| CxTYPE (cx) == CXt_FORMAT)
367	{	451	{
368	CV *cv = cx->blk_sub.cv;	452	CV *cv = cx->blk_sub.cv;
		453
369	if (CvDEPTH(cv))	454	if (CvDEPTH (cv))
370	{	455	{
371	EXTEND (SP, CvDEPTH(cv)*2);	456	EXTEND (SP, 3);
372
373	while (--CvDEPTH(cv))
374	{
375	/* this tells the restore code to increment CvDEPTH */
376	PUSHs (Nullsv);
377	PUSHs ((SV *)cv);
378	}
379
380	PUSHs ((SV *)CvPADLIST(cv));	457	PUSHs ((SV *)CvPADLIST (cv));
		458	PUSHs (INT2PTR (SV *, CvDEPTH (cv)));
381	PUSHs ((SV *)cv);	459	PUSHs ((SV *)cv);
382		460
		461	CvDEPTH (cv) = 0;
383	get_padlist (cv);	462	get_padlist (aTHX_ cv);
384	}	463	}
385	}	464	}
386	#ifdef CXt_FORMAT
387	else if (CxTYPE(cx) == CXt_FORMAT)
388	{
389	/* I never used formats, so how should I know how these are implemented? */
390	/* my bold guess is as a simple, plain sub... */
391	croak ("CXt_FORMAT not yet handled. Don't switch coroutines from within formats");
392	}
393	#endif
394	}	465	}
395		466
396	if (top_si->si_type == PERLSI_MAIN)	467	if (top_si->si_type == PERLSI_MAIN)
397	break;	468	break;
398		469
399	top_si = top_si->si_prev;	470	top_si = top_si->si_prev;
400	ccstk = top_si->si_cxstack;	471	ccstk = top_si->si_cxstack;
401	cxix = top_si->si_cxix;	472	cxix = top_si->si_cxix;
402	}	473	}
403		474
404	PUTBACK;	475	PUTBACK;
405	}	476	}
406		477
407	c->defav = flags & TRANSFER_SAVE_DEFAV ? (AV *)SvREFCNT_inc (GvAV (PL_defgv)) : 0;	478	c->defav = c->save & CORO_SAVE_DEFAV ? (AV *)SvREFCNT_inc (GvAV (PL_defgv)) : 0;
408	c->defsv = flags & TRANSFER_SAVE_DEFSV ? SvREFCNT_inc (DEFSV) : 0;	479	c->defsv = c->save & CORO_SAVE_DEFSV ? SvREFCNT_inc (DEFSV) : 0;
409	c->errsv = flags & TRANSFER_SAVE_ERRSV ? SvREFCNT_inc (ERRSV) : 0;	480	c->errsv = c->save & CORO_SAVE_ERRSV ? SvREFCNT_inc (ERRSV) : 0;
		481	c->deffh = c->save & CORO_SAVE_DEFFH ? (GV *)SvREFCNT_inc (PL_defoutgv) : 0;
		482	c->irssv = c->save & CORO_SAVE_IRSSV ? SvREFCNT_inc (PL_rs) : 0;
410		483
411	c->dowarn = PL_dowarn;	484	#define VAR(name,type)c->name = PL_ ## name;
412	c->in_eval = PL_in_eval;	485	# include "state.h"
413		486	#undef VAR
414	c->curstackinfo = PL_curstackinfo;
415	c->curstack = PL_curstack;
416	c->mainstack = PL_mainstack;
417	c->stack_sp = PL_stack_sp;
418	c->op = PL_op;
419	c->curpad = PL_curpad;
420	c->comppad = PL_comppad;
421	c->compcv = PL_compcv;
422	c->stack_base = PL_stack_base;
423	c->stack_max = PL_stack_max;
424	c->tmps_stack = PL_tmps_stack;
425	c->tmps_floor = PL_tmps_floor;
426	c->tmps_ix = PL_tmps_ix;
427	c->tmps_max = PL_tmps_max;
428	c->markstack = PL_markstack;
429	c->markstack_ptr = PL_markstack_ptr;
430	c->markstack_max = PL_markstack_max;
431	c->scopestack = PL_scopestack;
432	c->scopestack_ix = PL_scopestack_ix;
433	c->scopestack_max = PL_scopestack_max;
434	c->savestack = PL_savestack;
435	c->savestack_ix = PL_savestack_ix;
436	c->savestack_max = PL_savestack_max;
437	#if !PERL_VERSION_ATLEAST (5,9,0)
438	c->retstack = PL_retstack;
439	c->retstack_ix = PL_retstack_ix;
440	c->retstack_max = PL_retstack_max;
441	#endif
442	c->curpm = PL_curpm;
443	c->curcop = PL_curcop;
444	}	487	}
445		488
446	/*	489	/*
447	* allocate various perl stacks. This is an exact copy	490	* allocate various perl stacks. This is an exact copy
448	* of perl.c:init_stacks, except that it uses less memory	491	* of perl.c:init_stacks, except that it uses less memory
449	* on the (sometimes correct) assumption that coroutines do	492	* on the (sometimes correct) assumption that coroutines do
450	* not usually need a lot of stackspace.	493	* not usually need a lot of stackspace.
451	*/	494	*/
		495	#if CORO_PREFER_PERL_FUNCTIONS
		496	# define coro_init_stacks init_stacks
		497	#else
452	static void	498	static void
453	coro_init_stacks ()	499	coro_init_stacks (pTHX)
454	{	500	{
455	PL_curstackinfo = new_stackinfo(96, 1024/sizeof(PERL_CONTEXT) - 1);	501	PL_curstackinfo = new_stackinfo(64, 6);
456	PL_curstackinfo->si_type = PERLSI_MAIN;	502	PL_curstackinfo->si_type = PERLSI_MAIN;
457	PL_curstack = PL_curstackinfo->si_stack;	503	PL_curstack = PL_curstackinfo->si_stack;
458	PL_mainstack = PL_curstack; /* remember in case we switch stacks */	504	PL_mainstack = PL_curstack; /* remember in case we switch stacks */
459		505
460	PL_stack_base = AvARRAY(PL_curstack);	506	PL_stack_base = AvARRAY(PL_curstack);
461	PL_stack_sp = PL_stack_base;	507	PL_stack_sp = PL_stack_base;
462	PL_stack_max = PL_stack_base + AvMAX(PL_curstack);	508	PL_stack_max = PL_stack_base + AvMAX(PL_curstack);
463		509
464	New(50,PL_tmps_stack,96,SV*);	510	New(50,PL_tmps_stack,64,SV*);
465	PL_tmps_floor = -1;	511	PL_tmps_floor = -1;
466	PL_tmps_ix = -1;	512	PL_tmps_ix = -1;
467	PL_tmps_max = 96;	513	PL_tmps_max = 64;
468		514
469	New(54,PL_markstack,16,I32);	515	New(54,PL_markstack,16,I32);
470	PL_markstack_ptr = PL_markstack;	516	PL_markstack_ptr = PL_markstack;
471	PL_markstack_max = PL_markstack + 16;	517	PL_markstack_max = PL_markstack + 16;
472		518
…		…
476		522
477	New(54,PL_scopestack,16,I32);	523	New(54,PL_scopestack,16,I32);
478	PL_scopestack_ix = 0;	524	PL_scopestack_ix = 0;
479	PL_scopestack_max = 16;	525	PL_scopestack_max = 16;
480		526
481	New(54,PL_savestack,96,ANY);	527	New(54,PL_savestack,64,ANY);
482	PL_savestack_ix = 0;	528	PL_savestack_ix = 0;
483	PL_savestack_max = 96;	529	PL_savestack_max = 64;
484		530
485	#if !PERL_VERSION_ATLEAST (5,9,0)	531	#if !PERL_VERSION_ATLEAST (5,9,0)
486	New(54,PL_retstack,8,OP*);	532	New(54,PL_retstack,4,OP*);
487	PL_retstack_ix = 0;	533	PL_retstack_ix = 0;
488	PL_retstack_max = 8;	534	PL_retstack_max = 4;
489	#endif	535	#endif
490	}	536	}
		537	#endif
491		538
492	/*	539	/*
493	* destroy the stacks, the callchain etc...	540	* destroy the stacks, the callchain etc...
494	*/	541	*/
495	static void	542	static void
496	destroy_stacks()	543	coro_destroy_stacks (pTHX)
497	{	544	{
498	if (!IN_DESTRUCT)	545	if (!IN_DESTRUCT)
499	{	546	{
500	/* is this ugly, I ask? */	547	/* restore all saved variables and stuff */
501	LEAVE_SCOPE (0);	548	LEAVE_SCOPE (0);
		549	assert (PL_tmps_floor == -1);
502		550
503	/* sure it is, but more important: is it correct?? :/ */	551	/* free all temporaries */
504	FREETMPS;	552	FREETMPS;
		553	assert (PL_tmps_ix == -1);
505		554
		555	/* unwind all extra stacks */
506	/POPSTACK_TO (PL_mainstack);//D//use/	556	POPSTACK_TO (PL_mainstack);
		557
		558	/* unwind main stack */
		559	dounwind (-1);
507	}	560	}
508		561
509	while (PL_curstackinfo->si_next)	562	while (PL_curstackinfo->si_next)
510	PL_curstackinfo = PL_curstackinfo->si_next;	563	PL_curstackinfo = PL_curstackinfo->si_next;
511		564
512	while (PL_curstackinfo)	565	while (PL_curstackinfo)
513	{	566	{
514	PERL_SI *p = PL_curstackinfo->si_prev;	567	PERL_SI *p = PL_curstackinfo->si_prev;
515		568
516	{ /D//remove/
517	dSP;
518	SWITCHSTACK (PL_curstack, PL_curstackinfo->si_stack);
519	PUTBACK; /* possibly superfluous */
520	}
521
522	if (!IN_DESTRUCT)	569	if (!IN_DESTRUCT)
523	{
524	dounwind (-1);/D//remove/
525	SvREFCNT_dec (PL_curstackinfo->si_stack);	570	SvREFCNT_dec (PL_curstackinfo->si_stack);
526	}
527		571
528	Safefree (PL_curstackinfo->si_cxstack);	572	Safefree (PL_curstackinfo->si_cxstack);
529	Safefree (PL_curstackinfo);	573	Safefree (PL_curstackinfo);
530	PL_curstackinfo = p;	574	PL_curstackinfo = p;
531	}	575	}
…		…
537	#if !PERL_VERSION_ATLEAST (5,9,0)	581	#if !PERL_VERSION_ATLEAST (5,9,0)
538	Safefree (PL_retstack);	582	Safefree (PL_retstack);
539	#endif	583	#endif
540	}	584	}
541		585
		586	static size_t
		587	coro_rss (pTHX_ struct coro *coro)
		588	{
		589	size_t rss = sizeof (coro);
		590
		591	if (coro->mainstack)
		592	{
		593	if (coro->flags & CF_RUNNING)
		594	{
		595	#define VAR(name,type)coro->name = PL_ ## name;
		596	# include "state.h"
		597	#undef VAR
		598	}
		599
		600	rss += sizeof (coro->curstackinfo);
		601	rss += sizeof (struct xpvav) + (1 + AvFILL (coro->curstackinfo->si_stack)) * sizeof (SV *);
		602	rss += (coro->curstackinfo->si_cxmax + 1) * sizeof (PERL_CONTEXT);
		603	rss += sizeof (struct xpvav) + (1 + AvFILL (coro->curstack)) * sizeof (SV *);
		604	rss += coro->tmps_max * sizeof (SV *);
		605	rss += (coro->markstack_max - coro->markstack_ptr) * sizeof (I32);
		606	rss += coro->scopestack_max * sizeof (I32);
		607	rss += coro->savestack_max * sizeof (ANY);
		608
		609	#if !PERL_VERSION_ATLEAST (5,9,0)
		610	rss += coro->retstack_max * sizeof (OP *);
		611	#endif
		612	}
		613
		614	return rss;
		615	}
		616
		617	/ coroutine stack handling **********************************************/
		618
542	static void	619	static void
543	setup_coro (struct coro *coro)	620	setup_coro (pTHX_ struct coro *coro)
544	{	621	{
545	/*	622	/*
546	* emulate part of the perl startup here.	623	* emulate part of the perl startup here.
547	*/	624	*/
548	dTHX;	625	coro_init_stacks (aTHX);
		626
		627	PL_runops = RUNOPS_DEFAULT;
		628	PL_curcop = &PL_compiling;
		629	PL_in_eval = EVAL_NULL;
		630	PL_comppad = 0;
		631	PL_curpm = 0;
		632	PL_localizing = 0;
		633	PL_dirty = 0;
		634	PL_restartop = 0;
		635
		636	{
		637	dSP;
		638	LOGOP myop;
		639
		640	SvREFCNT_dec (GvAV (PL_defgv));
		641	GvAV (PL_defgv) = coro->args; coro->args = 0;
		642
		643	Zero (&myop, 1, LOGOP);
		644	myop.op_next = Nullop;
		645	myop.op_flags = OPf_WANT_VOID;
		646
		647	PUSHMARK (SP);
		648	XPUSHs (av_shift (GvAV (PL_defgv)));
		649	PUTBACK;
		650	PL_op = (OP *)&myop;
		651	PL_op = PL_ppaddr[OP_ENTERSUB](aTHX);
		652	SPAGAIN;
		653	}
		654
		655	ENTER; /* necessary e.g. for dounwind */
		656	}
		657
		658	static void
		659	free_coro_mortal (pTHX)
		660	{
		661	if (coro_mortal)
		662	{
		663	SvREFCNT_dec (coro_mortal);
		664	coro_mortal = 0;
		665	}
		666	}
		667
		668	static int
		669	runops_trace (pTHX)
		670	{
		671	COP *oldcop = 0;
		672	int oldcxix = -2;
		673	struct coro coro = SvSTATE (coro_current); / trace cctx is tied to specific coro */
		674	coro_cctx *cctx = coro->cctx;
		675
		676	while ((PL_op = CALL_FPTR (PL_op->op_ppaddr) (aTHX)))
		677	{
		678	PERL_ASYNC_CHECK ();
		679
		680	if (cctx->flags & CC_TRACE_ALL)
		681	{
		682	if (PL_op->op_type == OP_LEAVESUB && cctx->flags & CC_TRACE_SUB)
		683	{
		684	PERL_CONTEXT *cx = &cxstack[cxstack_ix];
		685	SV bot, top;
		686	AV av = newAV (); / return values */
		687	SV **cb;
		688	dSP;
		689
		690	GV *gv = CvGV (cx->blk_sub.cv);
		691	SV *fullname = sv_2mortal (newSV (0));
		692	if (isGV (gv))
		693	gv_efullname3 (fullname, gv, 0);
		694
		695	bot = PL_stack_base + cx->blk_oldsp + 1;
		696	top = cx->blk_gimme == G_ARRAY ? SP + 1
		697	: cx->blk_gimme == G_SCALAR ? bot + 1
		698	: bot;
		699
		700	while (bot < top)
		701	av_push (av, SvREFCNT_inc (*bot++));
		702
		703	PL_runops = RUNOPS_DEFAULT;
		704	ENTER;
		705	SAVETMPS;
		706	EXTEND (SP, 3);
		707	PUSHMARK (SP);
		708	PUSHs (&PL_sv_no);
		709	PUSHs (fullname);
		710	PUSHs (sv_2mortal (newRV_noinc ((SV *)av)));
		711	PUTBACK;
		712	cb = hv_fetch ((HV *)SvRV (coro_current), "_trace_sub_cb", sizeof ("_trace_sub_cb") - 1, 0);
		713	if (cb) call_sv (*cb, G_KEEPERR \| G_EVAL \| G_VOID \| G_DISCARD);
		714	SPAGAIN;
		715	FREETMPS;
		716	LEAVE;
		717	PL_runops = runops_trace;
		718	}
		719
		720	if (oldcop != PL_curcop)
		721	{
		722	oldcop = PL_curcop;
		723
		724	if (PL_curcop != &PL_compiling)
		725	{
		726	SV **cb;
		727
		728	if (oldcxix != cxstack_ix && cctx->flags & CC_TRACE_SUB)
		729	{
		730	PERL_CONTEXT *cx = &cxstack[cxstack_ix];
		731
		732	if (CxTYPE (cx) == CXt_SUB && oldcxix < cxstack_ix)
		733	{
		734	runops_proc_t old_runops = PL_runops;
		735	dSP;
		736	GV *gv = CvGV (cx->blk_sub.cv);
		737	SV *fullname = sv_2mortal (newSV (0));
		738
		739	if (isGV (gv))
		740	gv_efullname3 (fullname, gv, 0);
		741
		742	PL_runops = RUNOPS_DEFAULT;
		743	ENTER;
		744	SAVETMPS;
		745	EXTEND (SP, 3);
		746	PUSHMARK (SP);
		747	PUSHs (&PL_sv_yes);
		748	PUSHs (fullname);
		749	PUSHs (cx->blk_sub.hasargs ? sv_2mortal (newRV_inc ((SV *)cx->blk_sub.argarray)) : &PL_sv_undef);
		750	PUTBACK;
		751	cb = hv_fetch ((HV *)SvRV (coro_current), "_trace_sub_cb", sizeof ("_trace_sub_cb") - 1, 0);
		752	if (cb) call_sv (*cb, G_KEEPERR \| G_EVAL \| G_VOID \| G_DISCARD);
		753	SPAGAIN;
		754	FREETMPS;
		755	LEAVE;
		756	PL_runops = runops_trace;
		757	}
		758
		759	oldcxix = cxstack_ix;
		760	}
		761
		762	if (cctx->flags & CC_TRACE_LINE)
		763	{
		764	dSP;
		765
		766	PL_runops = RUNOPS_DEFAULT;
		767	ENTER;
		768	SAVETMPS;
		769	EXTEND (SP, 3);
		770	PL_runops = RUNOPS_DEFAULT;
		771	PUSHMARK (SP);
		772	PUSHs (sv_2mortal (newSVpv (OutCopFILE (oldcop), 0)));
		773	PUSHs (sv_2mortal (newSViv (CopLINE (oldcop))));
		774	PUTBACK;
		775	cb = hv_fetch ((HV *)SvRV (coro_current), "_trace_line_cb", sizeof ("_trace_line_cb") - 1, 0);
		776	if (cb) call_sv (*cb, G_KEEPERR \| G_EVAL \| G_VOID \| G_DISCARD);
		777	SPAGAIN;
		778	FREETMPS;
		779	LEAVE;
		780	PL_runops = runops_trace;
		781	}
		782	}
		783	}
		784	}
		785	}
		786
		787	TAINT_NOT;
		788	return 0;
		789	}
		790
		791	/* inject a fake call to Coro::State::_cctx_init into the execution */
		792	/* _cctx_init should be careful, as it could be called at almost any time */
		793	/* during execution of a perl program */
		794	static void NOINLINE
		795	prepare_cctx (pTHX_ coro_cctx *cctx)
		796	{
549	dSP;	797	dSP;
550	UNOP myop;	798	LOGOP myop;
551	SV sub_init = (SV )get_cv ("Coro::State::coro_init", FALSE);
552		799
553	coro_init_stacks ();	800	PL_top_env = &PL_start_env;
554	/PL_curcop = 0;/
555	/PL_in_eval = PL_in_eval;/ /* inherit */
556	SvREFCNT_dec (GvAV (PL_defgv));
557	GvAV (PL_defgv) = coro->args; coro->args = 0;
558		801
559	SPAGAIN;	802	if (cctx->flags & CC_TRACE)
		803	PL_runops = runops_trace;
560		804
561	Zero (&myop, 1, UNOP);	805	Zero (&myop, 1, LOGOP);
562	myop.op_next = Nullop;	806	myop.op_next = PL_op;
563	myop.op_flags = OPf_WANT_VOID;	807	myop.op_flags = OPf_WANT_VOID \| OPf_STACKED;
564		808
		809	PUSHMARK (SP);
		810	EXTEND (SP, 2);
		811	PUSHs (sv_2mortal (newSViv (PTR2IV (cctx))));
		812	PUSHs ((SV *)get_cv ("Coro::State::_cctx_init", FALSE));
		813	PUTBACK;
565	PL_op = (OP *)&myop;	814	PL_op = (OP *)&myop;
566
567	PUSHMARK(SP);
568	XPUSHs (sub_init);
569	PUTBACK;
570	PL_op = PL_ppaddr[OP_ENTERSUB](aTHX);	815	PL_op = PL_ppaddr[OP_ENTERSUB](aTHX);
571	SPAGAIN;	816	SPAGAIN;
572
573	ENTER; /* necessary e.g. for dounwind */
574	}	817	}
575		818
576	static void	819	/*
577	free_coro_mortal ()	820	* this is a _very_ stripped down perl interpreter ;)
578	{	821	*/
579	if (coro_mortal)
580	{
581	SvREFCNT_dec (coro_mortal);
582	coro_mortal = 0;
583	}
584	}
585
586	static void NOINLINE
587	prepare_cctx (coro_stack *cctx)
588	{
589	dSP;
590	UNOP myop;
591
592	Zero (&myop, 1, UNOP);
593	myop.op_next = PL_op;
594	myop.op_flags = OPf_WANT_VOID \| OPf_STACKED;
595
596	PUSHMARK(SP);
597	EXTEND (SP, 2);
598	PUSHs (newSViv (PTR2IV (cctx)));
599	PUSHs ((SV *)get_cv ("Coro::State::cctx_init", FALSE));
600	PUTBACK;
601	PL_restartop = PL_ppaddr[OP_ENTERSUB](aTHX);
602	SPAGAIN;
603	}
604
605	static void	822	static void
606	coro_run (void *arg)	823	coro_run (void *arg)
607	{	824	{
		825	dTHX;
		826
		827	/* coro_run is the alternative tail of transfer(), so unlock here. */
		828	UNLOCK;
		829
		830	/* we now skip the entersub that lead to transfer() */
		831	PL_op = PL_op->op_next;
		832
		833	/* inject a fake subroutine call to cctx_init */
		834	prepare_cctx (aTHX_ (coro_cctx *)arg);
		835
		836	/* somebody or something will hit me for both perl_run and PL_restartop */
		837	PL_restartop = PL_op;
		838	perl_run (PL_curinterp);
		839
608	/*	840	/*
609	* this is a _very_ stripped down perl interpreter ;)	841	* If perl-run returns we assume exit() was being called or the coro
		842	* fell off the end, which seems to be the only valid (non-bug)
		843	* reason for perl_run to return. We try to exit by jumping to the
		844	* bootstrap-time "top" top_env, as we cannot restore the "main"
		845	* coroutine as Coro has no such concept
610	*/	846	*/
611	UNLOCK;
612
613	PL_top_env = &PL_start_env;	847	PL_top_env = main_top_env;
614	prepare_cctx ((coro_stack *)arg);	848	JMPENV_JUMP (2); /* I do not feel well about the hardcoded 2 at all */
615
616	/* somebody will hit me for both perl_run and PL_restartop */
617	perl_run (PERL_GET_CONTEXT);
618
619	fputs ("FATAL: C coroutine fell over the edge of the world, aborting.\n", stderr);
620	abort ();
621	}	849	}
622		850
623	static coro_stack *	851	static coro_cctx *
624	stack_new ()	852	cctx_new ()
625	{	853	{
626	coro_stack *stack;	854	coro_cctx *cctx;
		855	void *stack_start;
		856	size_t stack_size;
627		857
		858	++cctx_count;
		859
628	New (0, stack, 1, coro_stack);	860	Newz (0, cctx, 1, coro_cctx);
629		861
630	#if HAVE_MMAP	862	#if HAVE_MMAP
631		863
632	stack->ssize = ((STACKSIZE * sizeof (long) + PAGESIZE - 1) / PAGESIZE + STACKGUARD) * PAGESIZE;	864	cctx->ssize = ((coro_stacksize * sizeof (long) + PAGESIZE - 1) / PAGESIZE + CORO_STACKGUARD) * PAGESIZE;
633	/* mmap suppsedly does allocate-on-write for us */	865	/* mmap supposedly does allocate-on-write for us */
634	stack->sptr = mmap (0, stack->ssize, PROT_EXEC\|PROT_READ\|PROT_WRITE, MAP_PRIVATE\|MAP_ANONYMOUS, 0, 0);	866	cctx->sptr = mmap (0, cctx->ssize, PROT_EXEC\|PROT_READ\|PROT_WRITE, MAP_PRIVATE\|MAP_ANONYMOUS, 0, 0);
635		867
636	if (stack->sptr == (void *)-1)	868	if (cctx->sptr != (void *)-1)
637	{
638	perror ("FATAL: unable to mmap stack for coroutine");
639	_exit (EXIT_FAILURE);
640	}	869	{
641
642	# if STACKGUARD	870	# if CORO_STACKGUARD
643	mprotect (stack->sptr, STACKGUARD * PAGESIZE, PROT_NONE);	871	mprotect (cctx->sptr, CORO_STACKGUARD * PAGESIZE, PROT_NONE);
644	# endif	872	# endif
645		873	stack_start = CORO_STACKGUARD * PAGESIZE + (char *)cctx->sptr;
646	#else	874	stack_size = cctx->ssize - CORO_STACKGUARD * PAGESIZE;
647		875	cctx->flags \|= CC_MAPPED;
648	stack->ssize = STACKSIZE * (long)sizeof (long);
649	New (0, stack->sptr, STACKSIZE, long);
650
651	if (!stack->sptr)
652	{	876	}
		877	else
		878	#endif
		879	{
		880	cctx->ssize = coro_stacksize * (long)sizeof (long);
		881	New (0, cctx->sptr, coro_stacksize, long);
		882
		883	if (!cctx->sptr)
		884	{
653	perror (stderr, "FATAL: unable to malloc stack for coroutine");	885	perror ("FATAL: unable to allocate stack for coroutine");
654	_exit (EXIT_FAILURE);	886	_exit (EXIT_FAILURE);
655	}	887	}
656		888
657	#endif	889	stack_start = cctx->sptr;
		890	stack_size = cctx->ssize;
		891	}
658		892
		893	REGISTER_STACK (cctx, (char )stack_start, (char )stack_start + stack_size);
659	coro_create (&stack->cctx, coro_run, (void *)stack, stack->sptr, stack->ssize);	894	coro_create (&cctx->cctx, coro_run, (void *)cctx, stack_start, stack_size);
660		895
661	return stack;	896	return cctx;
662	}	897	}
663		898
664	static void	899	static void
665	stack_free (coro_stack *stack)	900	cctx_destroy (coro_cctx *cctx)
666	{	901	{
667	if (!stack)	902	if (!cctx)
668	return;	903	return;
669		904
		905	--cctx_count;
		906
		907	#if CORO_USE_VALGRIND
		908	VALGRIND_STACK_DEREGISTER (cctx->valgrind_id);
		909	#endif
		910
670	#if HAVE_MMAP	911	#if HAVE_MMAP
		912	if (cctx->flags & CC_MAPPED)
671	munmap (stack->sptr, stack->ssize);	913	munmap (cctx->sptr, cctx->ssize);
672	#else
673	Safefree (stack->sptr);
674	#endif
675
676	Safefree (stack);
677	}
678
679	static coro_stack *stack_first;
680
681	static coro_stack *
682	stack_get ()
683	{
684	coro_stack *stack;
685
686	if (stack_first)
687	{
688	stack = stack_first;
689	stack_first = stack->next;
690	}
691	else	914	else
		915	#endif
		916	Safefree (cctx->sptr);
		917
		918	Safefree (cctx);
		919	}
		920
		921	static coro_cctx *
		922	cctx_get (pTHX)
		923	{
		924	while (cctx_first)
692	{	925	{
693	stack = stack_new ();	926	coro_cctx *cctx = cctx_first;
694	PL_op = PL_op->op_next;	927	cctx_first = cctx->next;
		928	--cctx_idle;
		929
		930	if (cctx->ssize >= coro_stacksize && !(cctx->flags & CC_NOREUSE))
		931	return cctx;
		932
		933	cctx_destroy (cctx);
695	}	934	}
696		935
697	return stack;	936	return cctx_new ();
698	}	937	}
699		938
700	static void	939	static void
701	stack_put (coro_stack *stack)	940	cctx_put (coro_cctx *cctx)
702	{	941	{
703	stack->next = stack_first;	942	/* free another cctx if overlimit */
704	stack_first = stack;	943	if (cctx_idle >= MAX_IDLE_CCTX)
705	}	944	{
		945	coro_cctx *first = cctx_first;
		946	cctx_first = first->next;
		947	--cctx_idle;
706		948
707	/* never call directly, always through the coro_state_transfer global variable */	949	cctx_destroy (first);
		950	}
		951
		952	++cctx_idle;
		953	cctx->next = cctx_first;
		954	cctx_first = cctx;
		955	}
		956
		957	/ coroutine switching ***************************************************/
		958
708	static void NOINLINE	959	static void NOINLINE
		960	transfer_check (pTHX_ struct coro prev, struct coro next)
		961	{
		962	if (prev != next)
		963	{
		964	if (!(prev->flags & (CF_RUNNING \| CF_NEW)))
		965	croak ("Coro::State::transfer called with non-running/new prev Coro::State, but can only transfer from running or new states");
		966
		967	if (next->flags & CF_RUNNING)
		968	croak ("Coro::State::transfer called with running next Coro::State, but can only transfer to inactive states");
		969
		970	if (next->flags & CF_DESTROYED)
		971	croak ("Coro::State::transfer called with destroyed next Coro::State, but can only transfer to inactive states");
		972
		973	if (PL_lex_state != LEX_NOTPARSING)
		974	croak ("Coro::State::transfer called while parsing, but this is not supported");
		975	}
		976	}
		977
		978	/* always use the TRANSFER macro */
		979	static void NOINLINE
709	transfer (struct coro prev, struct coro next, int flags)	980	transfer (pTHX_ struct coro prev, struct coro next)
710	{	981	{
711	dSTACKLEVEL;	982	dSTACKLEVEL;
712		983
713	/* sometimes transfer is only called to set idle_sp */	984	/* sometimes transfer is only called to set idle_sp */
714	if (flags == TRANSFER_SET_STACKLEVEL)	985	if (!next)
		986	{
715	((coro_stack *)prev)->idle_sp = STACKLEVEL;	987	((coro_cctx *)prev)->idle_sp = STACKLEVEL;
		988	assert (((coro_cctx )prev)->idle_te = PL_top_env); / just for the side-effect when asserts are enabled */
		989	}
716	else if (prev != next)	990	else if (prev != next)
717	{	991	{
718	coro_stack *prev__stack;	992	coro_cctx *prev__cctx;
		993
		994	if (prev->flags & CF_NEW)
		995	{
		996	/* create a new empty context */
		997	Newz (0, prev->cctx, 1, coro_cctx);
		998	prev->flags &= ~CF_NEW;
		999	prev->flags \|= CF_RUNNING;
		1000	}
		1001
		1002	prev->flags &= ~CF_RUNNING;
		1003	next->flags \|= CF_RUNNING;
719		1004
720	LOCK;	1005	LOCK;
721		1006
722	if (next->mainstack)	1007	if (next->flags & CF_NEW)
723	{	1008	{
724	/* coroutine already started */	1009	/* need to start coroutine */
725	SAVE (prev, flags);	1010	next->flags &= ~CF_NEW;
726	LOAD (next);	1011	/* first get rid of the old state */
		1012	save_perl (aTHX_ prev);
		1013	/* setup coroutine call */
		1014	setup_coro (aTHX_ next);
727	}	1015	}
728	else	1016	else
729	{	1017	{
730	/* need to start coroutine */	1018	/* coroutine already started */
731	/* first get rid of the old state */	1019	save_perl (aTHX_ prev);
732	SAVE (prev, -1);	1020	load_perl (aTHX_ next);
733	/* setup coroutine call */
734	setup_coro (next);
735	/* need a stack */
736	next->stack = 0;
737	}	1021	}
738		1022
739	if (!prev->stack)
740	/* create a new empty context */
741	Newz (0, prev->stack, 1, coro_stack);
742
743	prev__stack = prev->stack;	1023	prev__cctx = prev->cctx;
744		1024
745	/* possibly "free" the stack */	1025	/* possibly "free" the cctx */
746	if (prev__stack->idle_sp == STACKLEVEL)	1026	if (prev__cctx->idle_sp == STACKLEVEL && !(prev__cctx->flags & CC_TRACE))
747	{	1027	{
748	stack_put (prev__stack);	1028	/* I assume that STACKLEVEL is a stronger indicator than PL_top_env changes */
		1029	assert (("ERROR: current top_env must equal previous top_env", PL_top_env == prev__cctx->idle_te));
		1030
749	prev->stack = 0;	1031	prev->cctx = 0;
		1032
		1033	cctx_put (prev__cctx);
750	}	1034	}
751		1035
		1036	++next->usecount;
		1037
752	if (!next->stack)	1038	if (!next->cctx)
753	next->stack = stack_get ();	1039	next->cctx = cctx_get (aTHX);
754		1040
755	if (prev__stack != next->stack)	1041	if (prev__cctx != next->cctx)
756	{	1042	{
757	prev__stack->top_env = PL_top_env;	1043	prev__cctx->top_env = PL_top_env;
758	PL_top_env = next->stack->top_env;	1044	PL_top_env = next->cctx->top_env;
759	coro_transfer (&prev__stack->cctx, &next->stack->cctx);	1045	coro_transfer (&prev__cctx->cctx, &next->cctx->cctx);
760	}	1046	}
761		1047
762	free_coro_mortal ();	1048	free_coro_mortal (aTHX);
763
764	UNLOCK;	1049	UNLOCK;
765	}	1050	}
766	}	1051	}
767		1052
768	struct transfer_args	1053	struct transfer_args
769	{	1054	{
770	struct coro prev, next;	1055	struct coro prev, next;
771	int flags;
772	};	1056	};
773		1057
774	#define TRANSFER(ta) transfer ((ta).prev, (ta).next, (ta).flags)	1058	#define TRANSFER(ta) transfer (aTHX_ (ta).prev, (ta).next)
		1059	#define TRANSFER_CHECK(ta) transfer_check (aTHX_ (ta).prev, (ta).next)
775		1060
		1061	/ high level stuff ******************************************************/
		1062
776	static void	1063	static int
777	coro_state_destroy (struct coro *coro)	1064	coro_state_destroy (pTHX_ struct coro *coro)
778	{	1065	{
779	if (coro->refcnt--)	1066	if (coro->flags & CF_DESTROYED)
780	return;	1067	return 0;
		1068
		1069	coro->flags \|= CF_DESTROYED;
		1070
		1071	if (coro->flags & CF_READY)
		1072	{
		1073	/* reduce nready, as destroying a ready coro effectively unreadies it */
		1074	/* alternative: look through all ready queues and remove the coro */
		1075	LOCK;
		1076	--coro_nready;
		1077	UNLOCK;
		1078	}
		1079	else
		1080	coro->flags \|= CF_READY; /* make sure it is NOT put into the readyqueue */
781		1081
782	if (coro->mainstack && coro->mainstack != main_mainstack)	1082	if (coro->mainstack && coro->mainstack != main_mainstack)
783	{	1083	{
784	struct coro temp;	1084	struct coro temp;
785		1085
786	SAVE ((&temp), TRANSFER_SAVE_ALL);	1086	assert (!(coro->flags & CF_RUNNING));
787	LOAD (coro);
788		1087
		1088	Zero (&temp, 1, struct coro);
		1089	temp.save = CORO_SAVE_ALL;
		1090
		1091	if (coro->flags & CF_RUNNING)
		1092	croak ("FATAL: tried to destroy currently running coroutine");
		1093
		1094	save_perl (aTHX_ &temp);
		1095	load_perl (aTHX_ coro);
		1096
789	destroy_stacks ();	1097	coro_destroy_stacks (aTHX);
790		1098
791	LOAD ((&temp)); /* this will get rid of defsv etc.. */	1099	load_perl (aTHX_ &temp); /* this will get rid of defsv etc.. */
792		1100
793	coro->mainstack = 0;	1101	coro->mainstack = 0;
794	}	1102	}
795		1103
796	stack_free (coro->stack);	1104	cctx_destroy (coro->cctx);
797	SvREFCNT_dec (coro->args);	1105	SvREFCNT_dec (coro->args);
798	Safefree (coro);	1106
		1107	if (coro->next) coro->next->prev = coro->prev;
		1108	if (coro->prev) coro->prev->next = coro->next;
		1109	if (coro == coro_first) coro_first = coro->next;
		1110
		1111	return 1;
799	}	1112	}
800		1113
801	static int	1114	static int
802	coro_state_clear (pTHX_ SV sv, MAGIC mg)	1115	coro_state_free (pTHX_ SV sv, MAGIC mg)
803	{	1116	{
804	struct coro coro = (struct coro )mg->mg_ptr;	1117	struct coro coro = (struct coro )mg->mg_ptr;
805	mg->mg_ptr = 0;	1118	mg->mg_ptr = 0;
806		1119
		1120	coro->hv = 0;
		1121
		1122	if (--coro->refcnt < 0)
		1123	{
807	coro_state_destroy (coro);	1124	coro_state_destroy (aTHX_ coro);
		1125	Safefree (coro);
		1126	}
808		1127
809	return 0;	1128	return 0;
810	}	1129	}
811		1130
812	static int	1131	static int
…		…
819	return 0;	1138	return 0;
820	}	1139	}
821		1140
822	static MGVTBL coro_state_vtbl = {	1141	static MGVTBL coro_state_vtbl = {
823	0, 0, 0, 0,	1142	0, 0, 0, 0,
824	coro_state_clear,	1143	coro_state_free,
825	0,	1144	0,
826	#ifdef MGf_DUP	1145	#ifdef MGf_DUP
827	coro_state_dup,	1146	coro_state_dup,
		1147	#else
		1148	# define MGf_DUP 0
828	#endif	1149	#endif
829	};	1150	};
830		1151
831	static struct coro *
832	SvSTATE (SV *coro)
833	{
834	HV *stash;
835	MAGIC *mg;
836
837	if (SvROK (coro))
838	coro = SvRV (coro);
839
840	stash = SvSTASH (coro);
841	if (stash != coro_stash && stash != coro_state_stash)
842	{
843	/* very slow, but rare, check */
844	if (!sv_derived_from (sv_2mortal (newRV_inc (coro)), "Coro::State"))
845	croak ("Coro::State object required");
846	}
847
848	mg = SvMAGIC (coro);
849	assert (mg->mg_type == PERL_MAGIC_ext);
850	return (struct coro *)mg->mg_ptr;
851	}
852
853	static void	1152	static void
854	prepare_transfer (struct transfer_args ta, SV prev, SV *next, int flags)	1153	prepare_transfer (pTHX_ struct transfer_args ta, SV prev_sv, SV *next_sv)
855	{	1154	{
856	ta->prev = SvSTATE (prev);	1155	ta->prev = SvSTATE (prev_sv);
857	ta->next = SvSTATE (next);	1156	ta->next = SvSTATE (next_sv);
858	ta->flags = flags;	1157	TRANSFER_CHECK (*ta);
859	}	1158	}
860		1159
861	static void	1160	static void
862	api_transfer (SV prev, SV next, int flags)	1161	api_transfer (SV prev_sv, SV next_sv)
863	{	1162	{
864	dTHX;	1163	dTHX;
865	struct transfer_args ta;	1164	struct transfer_args ta;
866		1165
867	prepare_transfer (&ta, prev, next, flags);	1166	prepare_transfer (aTHX_ &ta, prev_sv, next_sv);
868	TRANSFER (ta);	1167	TRANSFER (ta);
869	}	1168	}
870		1169
		1170	static int
		1171	api_save (SV *coro_sv, int new_save)
		1172	{
		1173	dTHX;
		1174	struct coro *coro = SvSTATE (coro_sv);
		1175	int old_save = coro->save;
		1176
		1177	if (new_save >= 0)
		1178	coro->save = new_save;
		1179
		1180	return old_save;
		1181	}
		1182
871	/ Coro ******************************************************************/	1183	/ Coro ******************************************************************/
872		1184
873	#define PRIO_MAX 3
874	#define PRIO_HIGH 1
875	#define PRIO_NORMAL 0
876	#define PRIO_LOW -1
877	#define PRIO_IDLE -3
878	#define PRIO_MIN -4
879
880	/* for Coro.pm */
881	static GV coro_current, coro_idle;
882	static AV *coro_ready [PRIO_MAX-PRIO_MIN+1];
883	static int coro_nready;
884
885	static void	1185	static void
886	coro_enq (SV *sv)	1186	coro_enq (pTHX_ SV *coro_sv)
887	{	1187	{
888	int prio;
889
890	if (SvTYPE (sv) != SVt_PVHV)
891	croak ("Coro::ready tried to enqueue something that is not a coroutine");
892
893	prio = SvSTATE (sv)->prio;
894
895	av_push (coro_ready [prio - PRIO_MIN], sv);	1188	av_push (coro_ready [SvSTATE (coro_sv)->prio - PRIO_MIN], coro_sv);
896	coro_nready++;
897	}	1189	}
898		1190
899	static SV *	1191	static SV *
900	coro_deq (int min_prio)	1192	coro_deq (pTHX_ int min_prio)
901	{	1193	{
902	int prio = PRIO_MAX - PRIO_MIN;	1194	int prio = PRIO_MAX - PRIO_MIN;
903		1195
904	min_prio -= PRIO_MIN;	1196	min_prio -= PRIO_MIN;
905	if (min_prio < 0)	1197	if (min_prio < 0)
906	min_prio = 0;	1198	min_prio = 0;
907		1199
908	for (prio = PRIO_MAX - PRIO_MIN + 1; --prio >= min_prio; )	1200	for (prio = PRIO_MAX - PRIO_MIN + 1; --prio >= min_prio; )
909	if (AvFILLp (coro_ready [prio]) >= 0)	1201	if (AvFILLp (coro_ready [prio]) >= 0)
910	{
911	coro_nready--;
912	return av_shift (coro_ready [prio]);	1202	return av_shift (coro_ready [prio]);
913	}
914		1203
915	return 0;	1204	return 0;
916	}	1205	}
917		1206
		1207	static int
		1208	api_ready (SV *coro_sv)
		1209	{
		1210	dTHX;
		1211	struct coro *coro;
		1212
		1213	if (SvROK (coro_sv))
		1214	coro_sv = SvRV (coro_sv);
		1215
		1216	coro = SvSTATE (coro_sv);
		1217
		1218	if (coro->flags & CF_READY)
		1219	return 0;
		1220
		1221	coro->flags \|= CF_READY;
		1222
		1223	LOCK;
		1224	coro_enq (aTHX_ SvREFCNT_inc (coro_sv));
		1225	++coro_nready;
		1226	UNLOCK;
		1227
		1228	return 1;
		1229	}
		1230
		1231	static int
		1232	api_is_ready (SV *coro_sv)
		1233	{
		1234	dTHX;
		1235	return !!(SvSTATE (coro_sv)->flags & CF_READY);
		1236	}
		1237
918	static void	1238	static void
919	api_ready (SV *coro)	1239	prepare_schedule (pTHX_ struct transfer_args *ta)
920	{	1240	{
921	dTHX;	1241	SV prev_sv, next_sv;
922		1242
923	if (SvROK (coro))	1243	for (;;)
924	coro = SvRV (coro);	1244	{
		1245	LOCK;
		1246	next_sv = coro_deq (aTHX_ PRIO_MIN);
		1247
		1248	/* nothing to schedule: call the idle handler */
		1249	if (!next_sv)
		1250	{
		1251	dSP;
		1252	UNLOCK;
		1253
		1254	ENTER;
		1255	SAVETMPS;
		1256
		1257	PUSHMARK (SP);
		1258	PUTBACK;
		1259	call_sv (get_sv ("Coro::idle", FALSE), G_DISCARD);
		1260
		1261	FREETMPS;
		1262	LEAVE;
		1263	continue;
		1264	}
		1265
		1266	ta->next = SvSTATE (next_sv);
		1267
		1268	/* cannot transfer to destroyed coros, skip and look for next */
		1269	if (ta->next->flags & CF_DESTROYED)
		1270	{
		1271	UNLOCK;
		1272	SvREFCNT_dec (next_sv);
		1273	/* coro_nready is already taken care of by destroy */
		1274	continue;
		1275	}
		1276
		1277	--coro_nready;
		1278	UNLOCK;
		1279	break;
		1280	}
		1281
		1282	/* free this only after the transfer */
		1283	prev_sv = SvRV (coro_current);
		1284	ta->prev = SvSTATE (prev_sv);
		1285	TRANSFER_CHECK (*ta);
		1286	assert (ta->next->flags & CF_READY);
		1287	ta->next->flags &= ~CF_READY;
		1288	SvRV_set (coro_current, next_sv);
925		1289
926	LOCK;	1290	LOCK;
927	coro_enq (SvREFCNT_inc (coro));	1291	free_coro_mortal (aTHX);
		1292	coro_mortal = prev_sv;
928	UNLOCK;	1293	UNLOCK;
929	}	1294	}
930		1295
931	static void	1296	static void
932	prepare_schedule (struct transfer_args *ta)
933	{
934	SV current, prev, *next;
935
936	current = GvSV (coro_current);
937
938	for (;;)
939	{
940	LOCK;
941	next = coro_deq (PRIO_MIN);
942	UNLOCK;
943
944	if (next)
945	break;
946
947	{
948	dSP;
949
950	ENTER;
951	SAVETMPS;
952
953	PUSHMARK (SP);
954	PUTBACK;
955	call_sv (GvSV (coro_idle), G_DISCARD);
956
957	FREETMPS;
958	LEAVE;
959	}
960	}
961
962	prev = SvRV (current);
963	SvRV (current) = next;
964
965	/* free this only after the transfer */
966	LOCK;
967	free_coro_mortal ();
968	UNLOCK;
969	coro_mortal = prev;
970
971	ta->prev = SvSTATE (prev);
972	ta->next = SvSTATE (next);
973	ta->flags = TRANSFER_SAVE_ALL;
974	}
975
976	static void
977	prepare_cede (struct transfer_args *ta)	1297	prepare_cede (pTHX_ struct transfer_args *ta)
978	{	1298	{
979	LOCK;	1299	api_ready (coro_current);
980	coro_enq (SvREFCNT_inc (SvRV (GvSV (coro_current))));
981	UNLOCK;
982
983	prepare_schedule (ta);	1300	prepare_schedule (aTHX_ ta);
		1301	}
		1302
		1303	static int
		1304	prepare_cede_notself (pTHX_ struct transfer_args *ta)
		1305	{
		1306	if (coro_nready)
		1307	{
		1308	SV *prev = SvRV (coro_current);
		1309	prepare_schedule (aTHX_ ta);
		1310	api_ready (prev);
		1311	return 1;
		1312	}
		1313	else
		1314	return 0;
984	}	1315	}
985		1316
986	static void	1317	static void
987	api_schedule (void)	1318	api_schedule (void)
988	{	1319	{
989	dTHX;	1320	dTHX;
990	struct transfer_args ta;	1321	struct transfer_args ta;
991		1322
992	prepare_schedule (&ta);	1323	prepare_schedule (aTHX_ &ta);
993	TRANSFER (ta);	1324	TRANSFER (ta);
994	}	1325	}
995		1326
996	static void	1327	static int
997	api_cede (void)	1328	api_cede (void)
998	{	1329	{
999	dTHX;	1330	dTHX;
1000	struct transfer_args ta;	1331	struct transfer_args ta;
1001		1332
1002	prepare_cede (&ta);	1333	prepare_cede (aTHX_ &ta);
		1334
		1335	if (ta.prev != ta.next)
		1336	{
1003	TRANSFER (ta);	1337	TRANSFER (ta);
		1338	return 1;
		1339	}
		1340	else
		1341	return 0;
1004	}	1342	}
1005		1343
		1344	static int
		1345	api_cede_notself (void)
		1346	{
		1347	dTHX;
		1348	struct transfer_args ta;
		1349
		1350	if (prepare_cede_notself (aTHX_ &ta))
		1351	{
		1352	TRANSFER (ta);
		1353	return 1;
		1354	}
		1355	else
		1356	return 0;
		1357	}
		1358
		1359	static void
		1360	api_trace (SV *coro_sv, int flags)
		1361	{
		1362	dTHX;
		1363	struct coro *coro = SvSTATE (coro_sv);
		1364
		1365	if (flags & CC_TRACE)
		1366	{
		1367	if (!coro->cctx)
		1368	coro->cctx = cctx_new ();
		1369	else if (!(coro->cctx->flags & CC_TRACE))
		1370	croak ("cannot enable tracing on coroutine with custom stack");
		1371
		1372	coro->cctx->flags \|= CC_NOREUSE \| (flags & (CC_TRACE \| CC_TRACE_ALL));
		1373	}
		1374	else if (coro->cctx && coro->cctx->flags & CC_TRACE)
		1375	{
		1376	coro->cctx->flags &= ~(CC_TRACE \| CC_TRACE_ALL);
		1377
		1378	if (coro->flags & CF_RUNNING)
		1379	PL_runops = RUNOPS_DEFAULT;
		1380	else
		1381	coro->runops = RUNOPS_DEFAULT;
		1382	}
		1383	}
		1384
1006	MODULE = Coro::State PACKAGE = Coro::State	1385	MODULE = Coro::State PACKAGE = Coro::State PREFIX = api_
1007		1386
1008	PROTOTYPES: DISABLE	1387	PROTOTYPES: DISABLE
1009		1388
1010	BOOT:	1389	BOOT:
1011	{	1390	{
…		…
1014	#endif	1393	#endif
1015	BOOT_PAGESIZE;	1394	BOOT_PAGESIZE;
1016		1395
1017	coro_state_stash = gv_stashpv ("Coro::State", TRUE);	1396	coro_state_stash = gv_stashpv ("Coro::State", TRUE);
1018		1397
		1398	newCONSTSUB (coro_state_stash, "CC_TRACE" , newSViv (CC_TRACE));
		1399	newCONSTSUB (coro_state_stash, "CC_TRACE_SUB" , newSViv (CC_TRACE_SUB));
		1400	newCONSTSUB (coro_state_stash, "CC_TRACE_LINE", newSViv (CC_TRACE_LINE));
		1401	newCONSTSUB (coro_state_stash, "CC_TRACE_ALL" , newSViv (CC_TRACE_ALL));
		1402
1019	newCONSTSUB (coro_state_stash, "SAVE_DEFAV", newSViv (TRANSFER_SAVE_DEFAV));	1403	newCONSTSUB (coro_state_stash, "SAVE_DEFAV", newSViv (CORO_SAVE_DEFAV));
1020	newCONSTSUB (coro_state_stash, "SAVE_DEFSV", newSViv (TRANSFER_SAVE_DEFSV));	1404	newCONSTSUB (coro_state_stash, "SAVE_DEFSV", newSViv (CORO_SAVE_DEFSV));
1021	newCONSTSUB (coro_state_stash, "SAVE_ERRSV", newSViv (TRANSFER_SAVE_ERRSV));	1405	newCONSTSUB (coro_state_stash, "SAVE_ERRSV", newSViv (CORO_SAVE_ERRSV));
		1406	newCONSTSUB (coro_state_stash, "SAVE_IRSSV", newSViv (CORO_SAVE_IRSSV));
		1407	newCONSTSUB (coro_state_stash, "SAVE_DEFFH", newSViv (CORO_SAVE_DEFFH));
		1408	newCONSTSUB (coro_state_stash, "SAVE_DEF", newSViv (CORO_SAVE_DEF));
		1409	newCONSTSUB (coro_state_stash, "SAVE_ALL", newSViv (CORO_SAVE_ALL));
1022		1410
1023	main_mainstack = PL_mainstack;	1411	main_mainstack = PL_mainstack;
		1412	main_top_env = PL_top_env;
		1413
		1414	while (main_top_env->je_prev)
		1415	main_top_env = main_top_env->je_prev;
1024		1416
1025	coroapi.ver = CORO_API_VERSION;	1417	coroapi.ver = CORO_API_VERSION;
1026	coroapi.transfer = api_transfer;	1418	coroapi.transfer = api_transfer;
1027		1419
1028	assert (("PRIO_NORMAL must be 0", !PRIO_NORMAL));	1420	assert (("PRIO_NORMAL must be 0", !PRIO_NORMAL));
…		…
1036	HV *hv;	1428	HV *hv;
1037	int i;	1429	int i;
1038		1430
1039	Newz (0, coro, 1, struct coro);	1431	Newz (0, coro, 1, struct coro);
1040	coro->args = newAV ();	1432	coro->args = newAV ();
		1433	coro->save = CORO_SAVE_DEF;
		1434	coro->flags = CF_NEW;
1041		1435
		1436	if (coro_first) coro_first->prev = coro;
		1437	coro->next = coro_first;
		1438	coro_first = coro;
		1439
1042	hv = newHV ();	1440	coro->hv = hv = newHV ();
1043	sv_magicext ((SV )hv, 0, PERL_MAGIC_ext, &coro_state_vtbl, (char )coro, 0)->mg_flags \|= MGf_DUP;	1441	sv_magicext ((SV )hv, 0, PERL_MAGIC_ext, &coro_state_vtbl, (char )coro, 0)->mg_flags \|= MGf_DUP;
1044	RETVAL = sv_bless (newRV_noinc ((SV *)hv), gv_stashpv (klass, 1));	1442	RETVAL = sv_bless (newRV_noinc ((SV *)hv), gv_stashpv (klass, 1));
1045		1443
1046	for (i = 1; i < items; i++)	1444	for (i = 1; i < items; i++)
1047	av_push (coro->args, newSVsv (ST (i)));	1445	av_push (coro->args, newSVsv (ST (i)));
1048
1049	/coro->mainstack = 0; //actual work is done inside transfer /
1050	/coro->stack = 0;/
1051	}	1446	}
1052	OUTPUT:	1447	OUTPUT:
		1448	RETVAL
		1449
		1450	int
		1451	save (SV *coro, int new_save = -1)
		1452	CODE:
		1453	RETVAL = api_save (coro, new_save);
		1454	OUTPUT:
		1455	RETVAL
		1456
		1457	int
		1458	save_also (SV *coro_sv, int save_also)
		1459	CODE:
		1460	{
		1461	struct coro *coro = SvSTATE (coro_sv);
		1462	RETVAL = coro->save;
		1463	coro->save \|= save_also;
		1464	}
		1465	OUTPUT:
1053	RETVAL	1466	RETVAL
1054		1467
1055	void	1468	void
1056	_set_stacklevel (...)	1469	_set_stacklevel (...)
1057	ALIAS:	1470	ALIAS:
1058	Coro::State::transfer = 1	1471	Coro::State::transfer = 1
1059	Coro::schedule = 2	1472	Coro::schedule = 2
1060	Coro::cede = 3	1473	Coro::cede = 3
1061	Coro::Cont::yield = 4	1474	Coro::cede_notself = 4
1062	CODE:	1475	CODE:
1063	{	1476	{
1064	struct transfer_args ta;	1477	struct transfer_args ta;
1065		1478
1066	switch (ix)	1479	switch (ix)
1067	{	1480	{
1068	case 0:	1481	case 0:
1069	ta.prev = (struct coro )INT2PTR (coro_stack , SvIV (ST (0)));	1482	ta.prev = (struct coro )INT2PTR (coro_cctx , SvIV (ST (0)));
1070	ta.next = 0;	1483	ta.next = 0;
1071	ta.flags = TRANSFER_SET_STACKLEVEL;
1072	break;	1484	break;
1073		1485
1074	case 1:	1486	case 1:
1075	if (items != 3)	1487	if (items != 2)
1076	croak ("Coro::State::transfer(prev,next,flags) expects three arguments, not %d", items);	1488	croak ("Coro::State::transfer (prev,next) expects two arguments, not %d", items);
1077		1489
1078	prepare_transfer (&ta, ST (0), ST (1), SvIV (ST (2)));	1490	prepare_transfer (aTHX_ &ta, ST (0), ST (1));
1079	break;	1491	break;
1080		1492
1081	case 2:	1493	case 2:
1082	prepare_schedule (&ta);	1494	prepare_schedule (aTHX_ &ta);
1083	break;	1495	break;
1084		1496
1085	case 3:	1497	case 3:
1086	prepare_cede (&ta);	1498	prepare_cede (aTHX_ &ta);
1087	break;	1499	break;
1088		1500
1089	case 4:	1501	case 4:
1090	{	1502	if (!prepare_cede_notself (aTHX_ &ta))
1091	SV *yieldstack;	1503	XSRETURN_EMPTY;
1092	SV *sv;
1093	AV *defav = GvAV (PL_defgv);
1094		1504
1095	yieldstack = *hv_fetch (
1096	(HV *)SvRV (GvSV (coro_current)),
1097	"yieldstack", sizeof ("yieldstack") - 1,
1098	0
1099	);
1100
1101	/* set up @_ -- ugly */
1102	av_clear (defav);
1103	av_fill (defav, items - 1);
1104	while (items--)
1105	av_store (defav, items, SvREFCNT_inc (ST(items)));
1106
1107	sv = av_pop ((AV *)SvRV (yieldstack));
1108	ta.prev = SvSTATE (av_fetch ((AV )SvRV (sv), 0, 0));
1109	ta.next = SvSTATE (av_fetch ((AV )SvRV (sv), 1, 0));
1110	ta.flags = 0;
1111	SvREFCNT_dec (sv);
1112	}
1113	break;	1505	break;
1114
1115	}	1506	}
1116		1507
		1508	BARRIER;
1117	TRANSFER (ta);	1509	TRANSFER (ta);
1118	}
1119		1510
1120	void	1511	if (GIMME_V != G_VOID && ta.next != ta.prev)
1121	_clone_state_from (SV dst, SV src)	1512	XSRETURN_YES;
		1513	}
		1514
		1515	bool
		1516	_destroy (SV *coro_sv)
1122	CODE:	1517	CODE:
1123	{	1518	RETVAL = coro_state_destroy (aTHX_ SvSTATE (coro_sv));
1124	struct coro *coro_src = SvSTATE (src);	1519	OUTPUT:
1125		1520	RETVAL
1126	sv_unmagic (SvRV (dst), PERL_MAGIC_ext);
1127
1128	++coro_src->refcnt;
1129	sv_magicext (SvRV (dst), 0, PERL_MAGIC_ext, &coro_state_vtbl, (char *)coro_src, 0)->mg_flags \|= MGf_DUP;
1130	}
1131		1521
1132	void	1522	void
1133	_exit (code)	1523	_exit (code)
1134	int code	1524	int code
1135	PROTOTYPE: $	1525	PROTOTYPE: $
1136	CODE:	1526	CODE:
1137	_exit (code);	1527	_exit (code);
1138		1528
		1529	int
		1530	cctx_stacksize (int new_stacksize = 0)
		1531	CODE:
		1532	RETVAL = coro_stacksize;
		1533	if (new_stacksize)
		1534	coro_stacksize = new_stacksize;
		1535	OUTPUT:
		1536	RETVAL
		1537
		1538	int
		1539	cctx_count ()
		1540	CODE:
		1541	RETVAL = cctx_count;
		1542	OUTPUT:
		1543	RETVAL
		1544
		1545	int
		1546	cctx_idle ()
		1547	CODE:
		1548	RETVAL = cctx_idle;
		1549	OUTPUT:
		1550	RETVAL
		1551
		1552	void
		1553	list ()
		1554	PPCODE:
		1555	{
		1556	struct coro *coro;
		1557	for (coro = coro_first; coro; coro = coro->next)
		1558	if (coro->hv)
		1559	XPUSHs (sv_2mortal (newRV_inc ((SV *)coro->hv)));
		1560	}
		1561
		1562	void
		1563	call (Coro::State coro, SV *coderef)
		1564	ALIAS:
		1565	eval = 1
		1566	CODE:
		1567	{
		1568	if (coro->mainstack)
		1569	{
		1570	struct coro temp;
		1571	Zero (&temp, 1, struct coro);
		1572	temp.save = CORO_SAVE_ALL;
		1573
		1574	if (!(coro->flags & CF_RUNNING))
		1575	{
		1576	save_perl (aTHX_ &temp);
		1577	load_perl (aTHX_ coro);
		1578	}
		1579
		1580	{
		1581	dSP;
		1582	ENTER;
		1583	SAVETMPS;
		1584	PUSHMARK (SP);
		1585	PUTBACK;
		1586	if (ix)
		1587	eval_sv (coderef, 0);
		1588	else
		1589	call_sv (coderef, G_KEEPERR \| G_EVAL \| G_VOID \| G_DISCARD);
		1590	SPAGAIN;
		1591	FREETMPS;
		1592	LEAVE;
		1593	PUTBACK;
		1594	}
		1595
		1596	if (!(coro->flags & CF_RUNNING))
		1597	{
		1598	save_perl (aTHX_ coro);
		1599	load_perl (aTHX_ &temp);
		1600	}
		1601	}
		1602	}
		1603
		1604	SV *
		1605	is_ready (Coro::State coro)
		1606	PROTOTYPE: $
		1607	ALIAS:
		1608	is_ready = CF_READY
		1609	is_running = CF_RUNNING
		1610	is_new = CF_NEW
		1611	is_destroyed = CF_DESTROYED
		1612	CODE:
		1613	RETVAL = boolSV (coro->flags & ix);
		1614	OUTPUT:
		1615	RETVAL
		1616
		1617	void
		1618	api_trace (SV *coro, int flags = CC_TRACE \| CC_TRACE_SUB)
		1619
		1620	SV *
		1621	has_stack (Coro::State coro)
		1622	PROTOTYPE: $
		1623	CODE:
		1624	RETVAL = boolSV (!!coro->cctx);
		1625	OUTPUT:
		1626	RETVAL
		1627
		1628	int
		1629	is_traced (Coro::State coro)
		1630	PROTOTYPE: $
		1631	CODE:
		1632	RETVAL = (coro->cctx ? coro->cctx->flags : 0) & CC_TRACE_ALL;
		1633	OUTPUT:
		1634	RETVAL
		1635
		1636	IV
		1637	rss (Coro::State coro)
		1638	PROTOTYPE: $
		1639	ALIAS:
		1640	usecount = 1
		1641	CODE:
		1642	switch (ix)
		1643	{
		1644	case 0: RETVAL = coro_rss (aTHX_ coro); break;
		1645	case 1: RETVAL = coro->usecount; break;
		1646	}
		1647	OUTPUT:
		1648	RETVAL
		1649
		1650
1139	MODULE = Coro::State PACKAGE = Coro	1651	MODULE = Coro::State PACKAGE = Coro
1140		1652
1141	BOOT:	1653	BOOT:
1142	{	1654	{
1143	int i;	1655	int i;
		1656
		1657	sv_pool_rss = get_sv ("Coro::POOL_RSS" , TRUE);
		1658	sv_pool_size = get_sv ("Coro::POOL_SIZE" , TRUE);
		1659	av_async_pool = get_av ("Coro::async_pool", TRUE);
		1660
		1661	coro_current = get_sv ("Coro::current", FALSE);
		1662	SvREADONLY_on (coro_current);
1144		1663
1145	coro_stash = gv_stashpv ("Coro", TRUE);	1664	coro_stash = gv_stashpv ("Coro", TRUE);
1146		1665
1147	newCONSTSUB (coro_stash, "PRIO_MAX", newSViv (PRIO_MAX));	1666	newCONSTSUB (coro_stash, "PRIO_MAX", newSViv (PRIO_MAX));
1148	newCONSTSUB (coro_stash, "PRIO_HIGH", newSViv (PRIO_HIGH));	1667	newCONSTSUB (coro_stash, "PRIO_HIGH", newSViv (PRIO_HIGH));
1149	newCONSTSUB (coro_stash, "PRIO_NORMAL", newSViv (PRIO_NORMAL));	1668	newCONSTSUB (coro_stash, "PRIO_NORMAL", newSViv (PRIO_NORMAL));
1150	newCONSTSUB (coro_stash, "PRIO_LOW", newSViv (PRIO_LOW));	1669	newCONSTSUB (coro_stash, "PRIO_LOW", newSViv (PRIO_LOW));
1151	newCONSTSUB (coro_stash, "PRIO_IDLE", newSViv (PRIO_IDLE));	1670	newCONSTSUB (coro_stash, "PRIO_IDLE", newSViv (PRIO_IDLE));
1152	newCONSTSUB (coro_stash, "PRIO_MIN", newSViv (PRIO_MIN));	1671	newCONSTSUB (coro_stash, "PRIO_MIN", newSViv (PRIO_MIN));
1153		1672
1154	coro_current = gv_fetchpv ("Coro::current", TRUE, SVt_PV);
1155	coro_idle = gv_fetchpv ("Coro::idle" , TRUE, SVt_PV);
1156
1157	for (i = PRIO_MAX - PRIO_MIN + 1; i--; )	1673	for (i = PRIO_MAX - PRIO_MIN + 1; i--; )
1158	coro_ready[i] = newAV ();	1674	coro_ready[i] = newAV ();
1159		1675
1160	{	1676	{
1161	SV *sv = perl_get_sv("Coro::API", 1);	1677	SV *sv = perl_get_sv("Coro::API", 1);
1162		1678
1163	coroapi.schedule = api_schedule;	1679	coroapi.schedule = api_schedule;
		1680	coroapi.save = api_save;
1164	coroapi.cede = api_cede;	1681	coroapi.cede = api_cede;
		1682	coroapi.cede_notself = api_cede_notself;
1165	coroapi.ready = api_ready;	1683	coroapi.ready = api_ready;
		1684	coroapi.is_ready = api_is_ready;
1166	coroapi.nready = &coro_nready;	1685	coroapi.nready = &coro_nready;
1167	coroapi.current = coro_current;	1686	coroapi.current = coro_current;
1168		1687
1169	GCoroAPI = &coroapi;	1688	GCoroAPI = &coroapi;
1170	sv_setiv (sv, (IV)&coroapi);	1689	sv_setiv (sv, (IV)&coroapi);
1171	SvREADONLY_on (sv);	1690	SvREADONLY_on (sv);
1172	}	1691	}
1173	}	1692	}
		1693
		1694	void
		1695	_set_current (SV *current)
		1696	PROTOTYPE: $
		1697	CODE:
		1698	SvREFCNT_dec (SvRV (coro_current));
		1699	SvRV_set (coro_current, SvREFCNT_inc (SvRV (current)));
1174		1700
1175	int	1701	int
1176	prio (Coro::State coro, int newprio = 0)	1702	prio (Coro::State coro, int newprio = 0)
1177	ALIAS:	1703	ALIAS:
1178	nice = 1	1704	nice = 1
…		…
1181	RETVAL = coro->prio;	1707	RETVAL = coro->prio;
1182		1708
1183	if (items > 1)	1709	if (items > 1)
1184	{	1710	{
1185	if (ix)	1711	if (ix)
1186	newprio += coro->prio;	1712	newprio = coro->prio - newprio;
1187		1713
1188	if (newprio < PRIO_MIN) newprio = PRIO_MIN;	1714	if (newprio < PRIO_MIN) newprio = PRIO_MIN;
1189	if (newprio > PRIO_MAX) newprio = PRIO_MAX;	1715	if (newprio > PRIO_MAX) newprio = PRIO_MAX;
1190		1716
1191	coro->prio = newprio;	1717	coro->prio = newprio;
1192	}	1718	}
1193	}	1719	}
		1720	OUTPUT:
		1721	RETVAL
1194		1722
1195	void	1723	SV *
1196	ready (SV *self)	1724	ready (SV *self)
1197	PROTOTYPE: $	1725	PROTOTYPE: $
1198	CODE:	1726	CODE:
1199	api_ready (self);	1727	RETVAL = boolSV (api_ready (self));
		1728	OUTPUT:
		1729	RETVAL
1200		1730
1201	int	1731	int
1202	nready (...)	1732	nready (...)
1203	PROTOTYPE:	1733	PROTOTYPE:
1204	CODE:	1734	CODE:
1205	RETVAL = coro_nready;	1735	RETVAL = coro_nready;
1206	OUTPUT:	1736	OUTPUT:
1207	RETVAL	1737	RETVAL
1208		1738
		1739	# for async_pool speedup
		1740	void
		1741	_pool_1 (SV *cb)
		1742	CODE:
		1743	{
		1744	int i, len;
		1745	HV hv = (HV )SvRV (coro_current);
		1746	AV *defav = GvAV (PL_defgv);
		1747	SV *invoke = hv_delete (hv, "_invoke", sizeof ("_invoke") - 1, 0);
		1748	AV *invoke_av;
		1749
		1750	if (!invoke)
		1751	croak ("\3terminate\2\n");
		1752
		1753	hv_store (hv, "desc", sizeof ("desc") - 1,
		1754	newSVpvn ("[async_pool]", sizeof ("[async_pool]") - 1), 0);
		1755
		1756	invoke_av = (AV *)SvRV (invoke);
		1757	len = av_len (invoke_av);
		1758
		1759	sv_setsv (cb, AvARRAY (invoke_av)[0]);
		1760
		1761	if (len > 0)
		1762	{
		1763	av_fill (defav, len - 1);
		1764	for (i = 0; i < len; ++i)
		1765	av_store (defav, i, SvREFCNT_inc (AvARRAY (invoke_av)[i + 1]));
		1766	}
		1767
		1768	SvREFCNT_dec (invoke);
		1769	}
		1770
		1771	void
		1772	_pool_2 (SV *cb)
		1773	CODE:
		1774	{
		1775	struct coro *coro = SvSTATE (coro_current);
		1776
		1777	sv_setsv (cb, &PL_sv_undef);
		1778
		1779	if (coro_rss (aTHX_ coro) > SvIV (sv_pool_rss)
		1780	\|\| av_len (av_async_pool) + 1 >= SvIV (sv_pool_size))
		1781	croak ("\3terminate\2\n");
		1782
		1783	av_clear (GvAV (PL_defgv));
		1784	hv_store ((HV *)SvRV (coro_current), "desc", sizeof ("desc") - 1,
		1785	newSVpvn ("[async_pool idle]", sizeof ("[async_pool idle]") - 1), 0);
		1786
		1787	coro->save = CORO_SAVE_DEF;
		1788	coro->prio = 0;
		1789
		1790	if (coro->cctx && (coro->cctx->flags & CC_TRACE))
		1791	api_trace (coro_current, 0);
		1792
		1793	av_push (av_async_pool, newSVsv (coro_current));
		1794	}
		1795
		1796
1209	MODULE = Coro::State PACKAGE = Coro::AIO	1797	MODULE = Coro::State PACKAGE = Coro::AIO
1210		1798
1211	SV *	1799	SV *
1212	_get_state ()	1800	_get_state ()
1213	CODE:	1801	CODE:
1214	{	1802	{
1215	struct {	1803	struct io_state *data;
1216	int errorno;
1217	int laststype;
1218	int laststatval;
1219	Stat_t statcache;
1220	} data;
1221		1804
		1805	RETVAL = newSV (sizeof (struct io_state));
		1806	data = (struct io_state *)SvPVX (RETVAL);
		1807	SvCUR_set (RETVAL, sizeof (struct io_state));
		1808	SvPOK_only (RETVAL);
		1809
1222	data.errorno = errno;	1810	data->errorno = errno;
1223	data.laststype = PL_laststype;	1811	data->laststype = PL_laststype;
1224	data.laststatval = PL_laststatval;	1812	data->laststatval = PL_laststatval;
1225	data.statcache = PL_statcache;	1813	data->statcache = PL_statcache;
1226
1227	RETVAL = newSVpvn ((char *)&data, sizeof data);
1228	}	1814	}
1229	OUTPUT:	1815	OUTPUT:
1230	RETVAL	1816	RETVAL
1231		1817
1232	void	1818	void
1233	_set_state (char *data_)	1819	_set_state (char *data_)
1234	PROTOTYPE: $	1820	PROTOTYPE: $
1235	CODE:	1821	CODE:
1236	{	1822	{
1237	struct {	1823	struct io_state data = (void )data_;
1238	int errorno;
1239	int laststype;
1240	int laststatval;
1241	Stat_t statcache;
1242	} data = (void )data_;
1243		1824
1244	errno = data->errorno;	1825	errno = data->errorno;
1245	PL_laststype = data->laststype;	1826	PL_laststype = data->laststype;
1246	PL_laststatval = data->laststatval;	1827	PL_laststatval = data->laststatval;
1247	PL_statcache = data->statcache;	1828	PL_statcache = data->statcache;
1248	}	1829	}
		1830

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Comparing Coro/Coro/State.xs (file contents): Revision 1.100 by root, Mon Nov 27 00:07:49 2006 UTC vs. Revision 1.175 by root, Sun Sep 30 13:43:45 2007 UTC

Diff Legend

Comparing Coro/Coro/State.xs (file contents):
Revision 1.100 by root, Mon Nov 27 00:07:49 2006 UTC vs.
Revision 1.175 by root, Sun Sep 30 13:43:45 2007 UTC