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

Comparing Coro/Coro/State.xs (file contents):
Revision 1.107 by root, Mon Nov 27 02:15:51 2006 UTC vs.
Revision 1.172 by root, Sun Sep 30 13:15:01 2007 UTC

…		…
1	#include "libcoro/coro.c"	1	#include "libcoro/coro.c"
		2
		3	#define PERL_NO_GET_CONTEXT
2		4
3	#include "EXTERN.h"	5	#include "EXTERN.h"
4	#include "perl.h"	6	#include "perl.h"
5	#include "XSUB.h"	7	#include "XSUB.h"
6		8
7	#include "patchlevel.h"	9	#include "patchlevel.h"
8		10
9	#if USE_VALGRIND
10	# include <valgrind/valgrind.h>
11	#endif
12
13	#define PERL_VERSION_ATLEAST(a,b,c) \
14	(PERL_REVISION > (a) \
15	\|\| (PERL_REVISION == (a) \
16	&& (PERL_VERSION > (b) \
17	\|\| (PERL_VERSION == (b) && PERLSUBVERSION >= (c)))))
18
19	#if !PERL_VERSION_ATLEAST (5,6,0)
20	# ifndef PL_ppaddr
21	# define PL_ppaddr ppaddr
22	# endif
23	# ifndef call_sv
24	# define call_sv perl_call_sv
25	# endif
26	# ifndef get_sv
27	# define get_sv perl_get_sv
28	# endif
29	# ifndef get_cv
30	# define get_cv perl_get_cv
31	# endif
32	# ifndef IS_PADGV
33	# define IS_PADGV(v) 0
34	# endif
35	# ifndef IS_PADCONST
36	# define IS_PADCONST(v) 0
37	# endif
38	#endif
39
40	#include <stdio.h>	11	#include <stdio.h>
41	#include <errno.h>	12	#include <errno.h>
42		13	#include <assert.h>
43	#if !__i386 && !__x86_64 && !__powerpc && !__m68k && !__alpha && !__mips && !__sparc64
44	# undef STACKGUARD
45	#endif
46
47	#ifndef STACKGUARD
48	# define STACKGUARD 0
49	#endif
50		14
51	#ifdef HAVE_MMAP	15	#ifdef HAVE_MMAP
52	# include <unistd.h>	16	# include <unistd.h>
53	# include <sys/mman.h>	17	# include <sys/mman.h>
54	# ifndef MAP_ANONYMOUS	18	# ifndef MAP_ANONYMOUS
69	#else	33	#else
70	# define PAGESIZE 0	34	# define PAGESIZE 0
71	# define BOOT_PAGESIZE (void)0	35	# define BOOT_PAGESIZE (void)0
72	#endif	36	#endif
73		37
74	/* The next macro should declare a variable stacklevel that contains and approximation	38	#if CORO_USE_VALGRIND
75	* to the current C stack pointer. Its property is that it changes with each call	39	# include <valgrind/valgrind.h>
76	* and should be unique. */	40	# define REGISTER_STACK(cctx,start,end) (cctx)->valgrind_id = VALGRIND_STACK_REGISTER ((start), (end))
		41	#else
		42	# define REGISTER_STACK(cctx,start,end)
		43	#endif
		44
		45	/* the maximum number of idle cctx that will be pooled */
		46	#define MAX_IDLE_CCTX 8
		47
		48	#define PERL_VERSION_ATLEAST(a,b,c) \
		49	(PERL_REVISION > (a) \
		50	\|\| (PERL_REVISION == (a) \
		51	&& (PERL_VERSION > (b) \
		52	\|\| (PERL_VERSION == (b) && PERLSUBVERSION >= (c)))))
		53
		54	#if !PERL_VERSION_ATLEAST (5,6,0)
		55	# ifndef PL_ppaddr
		56	# define PL_ppaddr ppaddr
		57	# endif
		58	# ifndef call_sv
		59	# define call_sv perl_call_sv
		60	# endif
		61	# ifndef get_sv
		62	# define get_sv perl_get_sv
		63	# endif
		64	# ifndef get_cv
		65	# define get_cv perl_get_cv
		66	# endif
		67	# ifndef IS_PADGV
		68	# define IS_PADGV(v) 0
		69	# endif
		70	# ifndef IS_PADCONST
		71	# define IS_PADCONST(v) 0
		72	# endif
		73	#endif
		74
		75	/* 5.8.7 */
		76	#ifndef SvRV_set
		77	# define SvRV_set(s,v) SvRV(s) = (v)
		78	#endif
		79
		80	#if !__i386 && !__x86_64 && !__powerpc && !__m68k && !__alpha && !__mips && !__sparc64
		81	# undef CORO_STACKGUARD
		82	#endif
		83
		84	#ifndef CORO_STACKGUARD
		85	# define CORO_STACKGUARD 0
		86	#endif
		87
		88	/* prefer perl internal functions over our own? */
		89	#ifndef CORO_PREFER_PERL_FUNCTIONS
		90	# define CORO_PREFER_PERL_FUNCTIONS 0
		91	#endif
		92
		93	/* The next macros try to return the current stack pointer, in an as
		94	* portable way as possible. */
77	#define dSTACKLEVEL int stacklevel	95	#define dSTACKLEVEL volatile char stacklevel
78	#define STACKLEVEL ((void *)&stacklevel)	96	#define STACKLEVEL ((void *)&stacklevel)
79		97
80	#define IN_DESTRUCT (PL_main_cv == Nullcv)	98	#define IN_DESTRUCT (PL_main_cv == Nullcv)
81		99
82	#if __GNUC__ >= 3	100	#if __GNUC__ >= 3
83	# define attribute(x) __attribute__(x)	101	# define attribute(x) __attribute__(x)
		102	# define BARRIER __asm__ __volatile__ ("" : : : "memory")
84	#else	103	#else
85	# define attribute(x)	104	# define attribute(x)
		105	# define BARRIER
86	#endif	106	#endif
87		107
88	#define NOINLINE attribute ((noinline))	108	#define NOINLINE attribute ((noinline))
89		109
90	#include "CoroAPI.h"	110	#include "CoroAPI.h"
91
92	#define TRANSFER_SET_STACKLEVEL 0x8bfbfbfb /* magic cookie */
93		111
94	#ifdef USE_ITHREADS	112	#ifdef USE_ITHREADS
95	static perl_mutex coro_mutex;	113	static perl_mutex coro_mutex;
96	# define LOCK do { MUTEX_LOCK (&coro_mutex); } while (0)	114	# define LOCK do { MUTEX_LOCK (&coro_mutex); } while (0)
97	# define UNLOCK do { MUTEX_UNLOCK (&coro_mutex); } while (0)	115	# define UNLOCK do { MUTEX_UNLOCK (&coro_mutex); } while (0)
98	#else	116	#else
99	# define LOCK (void)0	117	# define LOCK (void)0
100	# define UNLOCK (void)0	118	# define UNLOCK (void)0
101	#endif	119	#endif
102		120
		121	/* helper storage struct for Coro::AIO */
		122	struct io_state
		123	{
		124	int errorno;
		125	I32 laststype;
		126	int laststatval;
		127	Stat_t statcache;
		128	};
		129
		130	static size_t coro_stacksize = CORO_STACKSIZE;
103	static struct CoroAPI coroapi;	131	static struct CoroAPI coroapi;
104	static AV main_mainstack; / used to differentiate between $main and others */	132	static AV main_mainstack; / used to differentiate between $main and others */
		133	static JMPENV *main_top_env;
105	static HV coro_state_stash, coro_stash;	134	static HV coro_state_stash, coro_stash;
106	static SV coro_mortal; / will be freed after next transfer */	135	static SV coro_mortal; / will be freed after next transfer */
107		136
		137	/* async_pool helper stuff */
		138	static SV *sv_pool_rss;
		139	static SV *sv_pool_size;
		140	static AV *av_async_pool;
		141
108	static struct coro_cctx *cctx_first;	142	static struct coro_cctx *cctx_first;
109	static int cctx_count, cctx_idle;	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	};
110		153
111	/* this is a structure representing a c-level coroutine */	154	/* this is a structure representing a c-level coroutine */
112	typedef struct coro_cctx {	155	typedef struct coro_cctx {
113	struct coro_cctx *next;	156	struct coro_cctx *next;
114		157
115	/* the stack */	158	/* the stack */
116	void *sptr;	159	void *sptr;
117	long ssize; /* positive == mmap, otherwise malloc */	160	size_t ssize;
118		161
119	/* cpu state */	162	/* cpu state */
120	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 */
121	JMPENV *top_env;	165	JMPENV *top_env;
122	coro_context cctx;	166	coro_context cctx;
123		167
124	#if USE_VALGRIND	168	#if CORO_USE_VALGRIND
125	int valgrind_id;	169	int valgrind_id;
126	#endif	170	#endif
		171	unsigned char flags;
127	} coro_cctx;	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	};
128		180
129	/* this is a structure representing a perl-level coroutine */	181	/* this is a structure representing a perl-level coroutine */
130	struct coro {	182	struct coro {
131	/* the c coroutine allocated to this perl coroutine, if any */	183	/* the c coroutine allocated to this perl coroutine, if any */
132	coro_cctx *cctx;	184	coro_cctx *cctx;
133		185
134	/* data associated with this coroutine (initial args) */	186	/* data associated with this coroutine (initial args) */
135	AV *args;	187	AV *args;
136	int refcnt;	188	int refcnt;
		189	int save; /* CORO_SAVE flags */
		190	int flags; /* CF_ flags */
137		191
138	/* optionally saved, might be zero */	192	/* optionally saved, might be zero */
139	AV *defav;	193	AV defav; / @_ */
140	SV *defsv;	194	SV defsv; / $_ */
141	SV *errsv;	195	SV errsv; / $@ */
		196	GV deffh; / default filehandle */
		197	SV irssv; / $/ */
		198	SV irssv_sv; / real $/ cache */
142		199
143	/* saved global state not related to stacks */	200	#define VAR(name,type) type name;
144	U8 dowarn;	201	# include "state.h"
145	I32 in_eval;	202	#undef VAR
146		203
147	/* the stacks and related info (callchain etc..) */	204	/* statistics */
148	PERL_SI *curstackinfo;	205	int usecount; /* number of switches to this coro */
149	AV *curstack;
150	AV *mainstack;
151	SV **stack_sp;
152	OP *op;
153	SV **curpad;
154	AV *comppad;
155	CV *compcv;
156	SV **stack_base;
157	SV **stack_max;
158	SV **tmps_stack;
159	I32 tmps_floor;
160	I32 tmps_ix;
161	I32 tmps_max;
162	I32 *markstack;
163	I32 *markstack_ptr;
164	I32 *markstack_max;
165	I32 *scopestack;
166	I32 scopestack_ix;
167	I32 scopestack_max;
168	ANY *savestack;
169	I32 savestack_ix;
170	I32 savestack_max;
171	OP **retstack;
172	I32 retstack_ix;
173	I32 retstack_max;
174	PMOP *curpm;
175	COP *curcop;
176		206
177	/* coro process data */	207	/* coro process data */
178	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 */
179	};	213	};
180		214
181	typedef struct coro *Coro__State;	215	typedef struct coro *Coro__State;
182	typedef struct coro *Coro__State_or_hashref;	216	typedef struct coro *Coro__State_or_hashref;
183		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
184	static AV *	235	static AV *
185	coro_clone_padlist (CV *cv)	236	coro_clone_padlist (pTHX_ CV *cv)
186	{	237	{
187	AV *padlist = CvPADLIST (cv);	238	AV *padlist = CvPADLIST (cv);
188	AV newpadlist, newpad;	239	AV newpadlist, newpad;
189		240
190	newpadlist = newAV ();	241	newpadlist = newAV ();
…		…
202		253
203	return newpadlist;	254	return newpadlist;
204	}	255	}
205		256
206	static void	257	static void
207	free_padlist (AV *padlist)	258	free_padlist (pTHX_ AV *padlist)
208	{	259	{
209	/* may be during global destruction */	260	/* may be during global destruction */
210	if (SvREFCNT (padlist))	261	if (SvREFCNT (padlist))
211	{	262	{
212	I32 i = AvFILLp (padlist);	263	I32 i = AvFILLp (padlist);
…		…
233	AV *padlist;	284	AV *padlist;
234	AV av = (AV )mg->mg_obj;	285	AV av = (AV )mg->mg_obj;
235		286
236	/* casting is fun. */	287	/* casting is fun. */
237	while (&PL_sv_undef != (SV )(padlist = (AV )av_pop (av)))	288	while (&PL_sv_undef != (SV )(padlist = (AV )av_pop (av)))
238	free_padlist (padlist);	289	free_padlist (aTHX_ padlist);
239		290
240	SvREFCNT_dec (av);	291	SvREFCNT_dec (av);
241		292
242	return 0;	293	return 0;
243	}	294	}
244		295
245	#define PERL_MAGIC_coro PERL_MAGIC_ext	296	#define PERL_MAGIC_coro PERL_MAGIC_ext
246		297
247	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))
248		332
249	/* the next two functions merely cache the padlists */	333	/* the next two functions merely cache the padlists */
250	static void	334	static void
251	get_padlist (CV *cv)	335	get_padlist (pTHX_ CV *cv)
252	{	336	{
253	MAGIC mg = mg_find ((SV )cv, PERL_MAGIC_coro);	337	MAGIC *mg = CORO_MAGIC (cv);
		338	AV *av;
254		339
255	if (mg && AvFILLp ((AV *)mg->mg_obj) >= 0)	340	if (mg && AvFILLp ((av = (AV *)mg->mg_obj)) >= 0)
256	CvPADLIST (cv) = (AV )av_pop ((AV )mg->mg_obj);	341	CvPADLIST (cv) = (AV *)AvARRAY (av)[AvFILLp (av)--];
257	else	342	else
258	{	343	{
259	#if 0	344	#if CORO_PREFER_PERL_FUNCTIONS
260	/* this is probably cleaner, but also slower? */	345	/* this is probably cleaner, but also slower? */
261	CV *cp = Perl_cv_clone (cv);	346	CV *cp = Perl_cv_clone (cv);
262	CvPADLIST (cv) = CvPADLIST (cp);	347	CvPADLIST (cv) = CvPADLIST (cp);
263	CvPADLIST (cp) = 0;	348	CvPADLIST (cp) = 0;
264	SvREFCNT_dec (cp);	349	SvREFCNT_dec (cp);
265	#else	350	#else
266	CvPADLIST (cv) = coro_clone_padlist (cv);	351	CvPADLIST (cv) = coro_clone_padlist (aTHX_ cv);
267	#endif	352	#endif
268	}	353	}
269	}	354	}
270		355
271	static void	356	static void
272	put_padlist (CV *cv)	357	put_padlist (pTHX_ CV *cv)
273	{	358	{
274	MAGIC mg = mg_find ((SV )cv, PERL_MAGIC_coro);	359	MAGIC *mg = CORO_MAGIC (cv);
		360	AV *av;
275		361
276	if (!mg)	362	if (!mg)
277	{	363	{
278	sv_magic ((SV *)cv, 0, PERL_MAGIC_coro, 0, 0);	364	sv_magic ((SV *)cv, 0, PERL_MAGIC_coro, 0, 0);
279	mg = mg_find ((SV *)cv, PERL_MAGIC_coro);	365	mg = mg_find ((SV *)cv, PERL_MAGIC_coro);
280	mg->mg_virtual = &vtbl_coro;	366	mg->mg_virtual = &vtbl_coro;
281	mg->mg_obj = (SV *)newAV ();	367	mg->mg_obj = (SV *)newAV ();
282	}	368	}
283		369
284	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);
285	}	376	}
		377
		378	/ load & save, init *****************************************************/
286		379
287	#define SB do {	380	#define SB do {
288	#define SE } while (0)	381	#define SE } while (0)
289		382
290	#define LOAD(state) load_state((state));
291	#define SAVE(state,flags) save_state((state),(flags));
292
293	#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
294		384
295	static void	385	static void
296	load_state(Coro__State c)	386	load_perl (pTHX_ Coro__State c)
297	{	387	{
298	PL_dowarn = c->dowarn;	388	#define VAR(name,type) PL_ ## name = c->name;
299	PL_in_eval = c->in_eval;	389	# include "state.h"
300		390	#undef VAR
301	PL_curstackinfo = c->curstackinfo;
302	PL_curstack = c->curstack;
303	PL_mainstack = c->mainstack;
304	PL_stack_sp = c->stack_sp;
305	PL_op = c->op;
306	PL_curpad = c->curpad;
307	PL_comppad = c->comppad;
308	PL_compcv = c->compcv;
309	PL_stack_base = c->stack_base;
310	PL_stack_max = c->stack_max;
311	PL_tmps_stack = c->tmps_stack;
312	PL_tmps_floor = c->tmps_floor;
313	PL_tmps_ix = c->tmps_ix;
314	PL_tmps_max = c->tmps_max;
315	PL_markstack = c->markstack;
316	PL_markstack_ptr = c->markstack_ptr;
317	PL_markstack_max = c->markstack_max;
318	PL_scopestack = c->scopestack;
319	PL_scopestack_ix = c->scopestack_ix;
320	PL_scopestack_max = c->scopestack_max;
321	PL_savestack = c->savestack;
322	PL_savestack_ix = c->savestack_ix;
323	PL_savestack_max = c->savestack_max;
324	#if !PERL_VERSION_ATLEAST (5,9,0)
325	PL_retstack = c->retstack;
326	PL_retstack_ix = c->retstack_ix;
327	PL_retstack_max = c->retstack_max;
328	#endif
329	PL_curpm = c->curpm;
330	PL_curcop = c->curcop;
331		391
332	if (c->defav) REPLACE_SV (GvAV (PL_defgv), c->defav);	392	if (c->defav) REPLACE_SV (GvAV (PL_defgv), c->defav);
333	if (c->defsv) REPLACE_SV (DEFSV , c->defsv);	393	if (c->defsv) REPLACE_SV (DEFSV , c->defsv);
334	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	}
335		411
336	{	412	{
337	dSP;	413	dSP;
338	CV *cv;	414	CV *cv;
339		415
340	/* now do the ugly restore mess */	416	/* now do the ugly restore mess */
341	while ((cv = (CV *)POPs))	417	while ((cv = (CV *)POPs))
342	{	418	{
343	AV padlist = (AV )POPs;
344
345	if (padlist)
346	{
347	put_padlist (cv); /* mark this padlist as available */	419	put_padlist (aTHX_ cv); /* mark this padlist as available */
348	CvPADLIST(cv) = padlist;	420	CvDEPTH (cv) = PTR2IV (POPs);
349	}	421	CvPADLIST (cv) = (AV *)POPs;
350
351	++CvDEPTH(cv);
352	}	422	}
353		423
354	PUTBACK;	424	PUTBACK;
355	}	425	}
356	}	426	}
357		427
358	static void	428	static void
359	save_state(Coro__State c, int flags)	429	save_perl (pTHX_ Coro__State c)
360	{	430	{
361	{	431	{
362	dSP;	432	dSP;
363	I32 cxix = cxstack_ix;	433	I32 cxix = cxstack_ix;
364	PERL_CONTEXT *ccstk = cxstack;	434	PERL_CONTEXT *ccstk = cxstack;
…		…
367	/*	437	/*
368	* 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
369	* (and reinitialize) all cv's in the whole callchain :(	439	* (and reinitialize) all cv's in the whole callchain :(
370	*/	440	*/
371		441
372	PUSHs (Nullsv);	442	XPUSHs (Nullsv);
373	/* this loop was inspired by pp_caller */	443	/* this loop was inspired by pp_caller */
374	for (;;)	444	for (;;)
375	{	445	{
376	while (cxix >= 0)	446	while (cxix >= 0)
377	{	447	{
378	PERL_CONTEXT *cx = &ccstk[cxix--];	448	PERL_CONTEXT *cx = &ccstk[cxix--];
379		449
380	if (CxTYPE(cx) == CXt_SUB)	450	if (CxTYPE (cx) == CXt_SUB \|\| CxTYPE (cx) == CXt_FORMAT)
381	{	451	{
382	CV *cv = cx->blk_sub.cv;	452	CV *cv = cx->blk_sub.cv;
		453
383	if (CvDEPTH(cv))	454	if (CvDEPTH (cv))
384	{	455	{
385	EXTEND (SP, CvDEPTH(cv)*2);	456	EXTEND (SP, 3);
386
387	while (--CvDEPTH(cv))
388	{
389	/* this tells the restore code to increment CvDEPTH */
390	PUSHs (Nullsv);
391	PUSHs ((SV *)cv);
392	}
393
394	PUSHs ((SV *)CvPADLIST(cv));	457	PUSHs ((SV *)CvPADLIST (cv));
		458	PUSHs (INT2PTR (SV *, CvDEPTH (cv)));
395	PUSHs ((SV *)cv);	459	PUSHs ((SV *)cv);
396		460
		461	CvDEPTH (cv) = 0;
397	get_padlist (cv);	462	get_padlist (aTHX_ cv);
398	}	463	}
399	}	464	}
400	#ifdef CXt_FORMAT
401	else if (CxTYPE(cx) == CXt_FORMAT)
402	{
403	/* I never used formats, so how should I know how these are implemented? */
404	/* my bold guess is as a simple, plain sub... */
405	croak ("CXt_FORMAT not yet handled. Don't switch coroutines from within formats");
406	}
407	#endif
408	}	465	}
409		466
410	if (top_si->si_type == PERLSI_MAIN)	467	if (top_si->si_type == PERLSI_MAIN)
411	break;	468	break;
412		469
413	top_si = top_si->si_prev;	470	top_si = top_si->si_prev;
414	ccstk = top_si->si_cxstack;	471	ccstk = top_si->si_cxstack;
415	cxix = top_si->si_cxix;	472	cxix = top_si->si_cxix;
416	}	473	}
417		474
418	PUTBACK;	475	PUTBACK;
419	}	476	}
420		477
421	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;
422	c->defsv = flags & TRANSFER_SAVE_DEFSV ? SvREFCNT_inc (DEFSV) : 0;	479	c->defsv = c->save & CORO_SAVE_DEFSV ? SvREFCNT_inc (DEFSV) : 0;
423	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;
424		483
425	c->dowarn = PL_dowarn;	484	#define VAR(name,type)c->name = PL_ ## name;
426	c->in_eval = PL_in_eval;	485	# include "state.h"
427		486	#undef VAR
428	c->curstackinfo = PL_curstackinfo;
429	c->curstack = PL_curstack;
430	c->mainstack = PL_mainstack;
431	c->stack_sp = PL_stack_sp;
432	c->op = PL_op;
433	c->curpad = PL_curpad;
434	c->comppad = PL_comppad;
435	c->compcv = PL_compcv;
436	c->stack_base = PL_stack_base;
437	c->stack_max = PL_stack_max;
438	c->tmps_stack = PL_tmps_stack;
439	c->tmps_floor = PL_tmps_floor;
440	c->tmps_ix = PL_tmps_ix;
441	c->tmps_max = PL_tmps_max;
442	c->markstack = PL_markstack;
443	c->markstack_ptr = PL_markstack_ptr;
444	c->markstack_max = PL_markstack_max;
445	c->scopestack = PL_scopestack;
446	c->scopestack_ix = PL_scopestack_ix;
447	c->scopestack_max = PL_scopestack_max;
448	c->savestack = PL_savestack;
449	c->savestack_ix = PL_savestack_ix;
450	c->savestack_max = PL_savestack_max;
451	#if !PERL_VERSION_ATLEAST (5,9,0)
452	c->retstack = PL_retstack;
453	c->retstack_ix = PL_retstack_ix;
454	c->retstack_max = PL_retstack_max;
455	#endif
456	c->curpm = PL_curpm;
457	c->curcop = PL_curcop;
458	}	487	}
459		488
460	/*	489	/*
461	* allocate various perl stacks. This is an exact copy	490	* allocate various perl stacks. This is an exact copy
462	* of perl.c:init_stacks, except that it uses less memory	491	* of perl.c:init_stacks, except that it uses less memory
463	* on the (sometimes correct) assumption that coroutines do	492	* on the (sometimes correct) assumption that coroutines do
464	* not usually need a lot of stackspace.	493	* not usually need a lot of stackspace.
465	*/	494	*/
		495	#if CORO_PREFER_PERL_FUNCTIONS
		496	# define coro_init_stacks init_stacks
		497	#else
466	static void	498	static void
467	coro_init_stacks ()	499	coro_init_stacks (pTHX)
468	{	500	{
469	PL_curstackinfo = new_stackinfo(96, 1024/sizeof(PERL_CONTEXT) - 1);	501	PL_curstackinfo = new_stackinfo(64, 6);
470	PL_curstackinfo->si_type = PERLSI_MAIN;	502	PL_curstackinfo->si_type = PERLSI_MAIN;
471	PL_curstack = PL_curstackinfo->si_stack;	503	PL_curstack = PL_curstackinfo->si_stack;
472	PL_mainstack = PL_curstack; /* remember in case we switch stacks */	504	PL_mainstack = PL_curstack; /* remember in case we switch stacks */
473		505
474	PL_stack_base = AvARRAY(PL_curstack);	506	PL_stack_base = AvARRAY(PL_curstack);
475	PL_stack_sp = PL_stack_base;	507	PL_stack_sp = PL_stack_base;
476	PL_stack_max = PL_stack_base + AvMAX(PL_curstack);	508	PL_stack_max = PL_stack_base + AvMAX(PL_curstack);
477		509
478	New(50,PL_tmps_stack,96,SV*);	510	New(50,PL_tmps_stack,64,SV*);
479	PL_tmps_floor = -1;	511	PL_tmps_floor = -1;
480	PL_tmps_ix = -1;	512	PL_tmps_ix = -1;
481	PL_tmps_max = 96;	513	PL_tmps_max = 64;
482		514
483	New(54,PL_markstack,16,I32);	515	New(54,PL_markstack,16,I32);
484	PL_markstack_ptr = PL_markstack;	516	PL_markstack_ptr = PL_markstack;
485	PL_markstack_max = PL_markstack + 16;	517	PL_markstack_max = PL_markstack + 16;
486		518
…		…
490		522
491	New(54,PL_scopestack,16,I32);	523	New(54,PL_scopestack,16,I32);
492	PL_scopestack_ix = 0;	524	PL_scopestack_ix = 0;
493	PL_scopestack_max = 16;	525	PL_scopestack_max = 16;
494		526
495	New(54,PL_savestack,96,ANY);	527	New(54,PL_savestack,64,ANY);
496	PL_savestack_ix = 0;	528	PL_savestack_ix = 0;
497	PL_savestack_max = 96;	529	PL_savestack_max = 64;
498		530
499	#if !PERL_VERSION_ATLEAST (5,9,0)	531	#if !PERL_VERSION_ATLEAST (5,9,0)
500	New(54,PL_retstack,8,OP*);	532	New(54,PL_retstack,4,OP*);
501	PL_retstack_ix = 0;	533	PL_retstack_ix = 0;
502	PL_retstack_max = 8;	534	PL_retstack_max = 4;
503	#endif	535	#endif
504	}	536	}
		537	#endif
505		538
506	/*	539	/*
507	* destroy the stacks, the callchain etc...	540	* destroy the stacks, the callchain etc...
508	*/	541	*/
509	static void	542	static void
510	coro_destroy_stacks ()	543	coro_destroy_stacks (pTHX)
511	{	544	{
512	if (!IN_DESTRUCT)	545	if (!IN_DESTRUCT)
513	{	546	{
514	/* is this ugly, I ask? */	547	/* restore all saved variables and stuff */
515	LEAVE_SCOPE (0);	548	LEAVE_SCOPE (0);
		549	assert (PL_tmps_floor == -1);
516		550
517	/* sure it is, but more important: is it correct?? :/ */	551	/* free all temporaries */
518	FREETMPS;	552	FREETMPS;
		553	assert (PL_tmps_ix == -1);
519		554
		555	/* unwind all extra stacks */
520	/POPSTACK_TO (PL_mainstack);//D//use/	556	POPSTACK_TO (PL_mainstack);
		557
		558	/* unwind main stack */
		559	dounwind (-1);
521	}	560	}
522		561
523	while (PL_curstackinfo->si_next)	562	while (PL_curstackinfo->si_next)
524	PL_curstackinfo = PL_curstackinfo->si_next;	563	PL_curstackinfo = PL_curstackinfo->si_next;
525		564
526	while (PL_curstackinfo)	565	while (PL_curstackinfo)
527	{	566	{
528	PERL_SI *p = PL_curstackinfo->si_prev;	567	PERL_SI *p = PL_curstackinfo->si_prev;
529		568
530	{ /D//remove/
531	dSP;
532	SWITCHSTACK (PL_curstack, PL_curstackinfo->si_stack);
533	PUTBACK; /* possibly superfluous */
534	}
535
536	if (!IN_DESTRUCT)	569	if (!IN_DESTRUCT)
537	{
538	dounwind (-1);/D//remove/
539	SvREFCNT_dec (PL_curstackinfo->si_stack);	570	SvREFCNT_dec (PL_curstackinfo->si_stack);
540	}
541		571
542	Safefree (PL_curstackinfo->si_cxstack);	572	Safefree (PL_curstackinfo->si_cxstack);
543	Safefree (PL_curstackinfo);	573	Safefree (PL_curstackinfo);
544	PL_curstackinfo = p;	574	PL_curstackinfo = p;
545	}	575	}
…		…
551	#if !PERL_VERSION_ATLEAST (5,9,0)	581	#if !PERL_VERSION_ATLEAST (5,9,0)
552	Safefree (PL_retstack);	582	Safefree (PL_retstack);
553	#endif	583	#endif
554	}	584	}
555		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
556	static void	619	static void
557	setup_coro (struct coro *coro)	620	setup_coro (pTHX_ struct coro *coro)
558	{	621	{
559	/*	622	/*
560	* emulate part of the perl startup here.	623	* emulate part of the perl startup here.
561	*/	624	*/
562
563	coro_init_stacks ();	625	coro_init_stacks (aTHX);
564		626
		627	PL_runops = RUNOPS_DEFAULT;
		628	PL_curcop = &PL_compiling;
		629	PL_in_eval = EVAL_NULL;
565	PL_curcop = 0;	630	PL_comppad = 0;
566	PL_in_eval = 0;
567	PL_curpm = 0;	631	PL_curpm = 0;
		632	PL_localizing = 0;
		633	PL_dirty = 0;
		634	PL_restartop = 0;
568		635
569	{	636	{
570	dSP;	637	dSP;
571	LOGOP myop;	638	LOGOP myop;
572		639
573	/* I have no idea why this is needed, but it is */
574	PUSHMARK (SP);
575
576	SvREFCNT_dec (GvAV (PL_defgv));	640	SvREFCNT_dec (GvAV (PL_defgv));
577	GvAV (PL_defgv) = coro->args; coro->args = 0;	641	GvAV (PL_defgv) = coro->args; coro->args = 0;
578		642
579	Zero (&myop, 1, LOGOP);	643	Zero (&myop, 1, LOGOP);
580	myop.op_next = Nullop;	644	myop.op_next = Nullop;
581	myop.op_flags = OPf_WANT_VOID;	645	myop.op_flags = OPf_WANT_VOID;
582		646
		647	PUSHMARK (SP);
		648	XPUSHs (av_shift (GvAV (PL_defgv)));
		649	PUTBACK;
583	PL_op = (OP *)&myop;	650	PL_op = (OP *)&myop;
584
585	PUSHMARK (SP);
586	XPUSHs ((SV *)get_cv ("Coro::State::_coro_init", FALSE));
587	PUTBACK;
588	PL_op = PL_ppaddr[OP_ENTERSUB](aTHX);	651	PL_op = PL_ppaddr[OP_ENTERSUB](aTHX);
589	SPAGAIN;	652	SPAGAIN;
590
591	ENTER; /* necessary e.g. for dounwind */
592	}	653	}
		654
		655	ENTER; /* necessary e.g. for dounwind */
593	}	656	}
594		657
595	static void	658	static void
596	free_coro_mortal ()	659	free_coro_mortal (pTHX)
597	{	660	{
598	if (coro_mortal)	661	if (coro_mortal)
599	{	662	{
600	SvREFCNT_dec (coro_mortal);	663	SvREFCNT_dec (coro_mortal);
601	coro_mortal = 0;	664	coro_mortal = 0;
602	}	665	}
603	}	666	}
604		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 (PL_op->op_type == OP_LEAVESUB && cctx->flags & CC_TRACE_SUB)
		681	{
		682	PERL_CONTEXT *cx = &cxstack[cxstack_ix];
		683	SV bot, top;
		684	AV av = newAV (); / return values */
		685	SV **cb;
		686	runops_proc_t old_runops = PL_runops;
		687	dSP;
		688	ENTER;
		689	SAVETMPS;
		690	EXTEND (SP, 3);
		691	PL_runops = RUNOPS_DEFAULT;
		692
		693	GV *gv = CvGV (cx->blk_sub.cv);
		694	SV *fullname = sv_2mortal (newSV (0));
		695	if (isGV (gv))
		696	gv_efullname3 (fullname, gv, 0);
		697
		698	bot = PL_stack_base + cx->blk_oldsp + 1;
		699	top = cx->blk_gimme == G_ARRAY ? SP + 1
		700	: cx->blk_gimme == G_SCALAR ? bot + 1
		701	: bot;
		702
		703	while (bot < top)
		704	av_push (av, SvREFCNT_inc (*bot++));
		705
		706	PUSHMARK (SP);
		707	PUSHs (&PL_sv_no);
		708	PUSHs (fullname);
		709	PUSHs (sv_2mortal (newRV_noinc ((SV *)av)));
		710	PUTBACK;
		711	cb = hv_fetch ((HV *)SvRV (coro_current), "_trace_sub_cb", sizeof ("_trace_sub_cb") - 1, 0);
		712	if (cb) call_sv (*cb, G_KEEPERR \| G_EVAL \| G_VOID \| G_DISCARD);
		713	SPAGAIN;
		714
		715	FREETMPS;
		716	LEAVE;
		717	PL_runops = old_runops;
		718	}
		719
		720	if (oldcop != PL_curcop)
		721	{
		722	oldcop = PL_curcop;
		723
		724	if (PL_curcop != &PL_compiling)
		725	{
		726	SV **cb;
		727	runops_proc_t old_runops = PL_runops;
		728	dSP;
		729	ENTER;
		730	SAVETMPS;
		731	EXTEND (SP, 3);
		732	PL_runops = RUNOPS_DEFAULT;
		733
		734	if (oldcxix != cxstack_ix && cctx->flags & CC_TRACE_SUB)
		735	{
		736	PERL_CONTEXT *cx = &cxstack[cxstack_ix];
		737
		738	if (CxTYPE (cx) == CXt_SUB && oldcxix < cxstack_ix)
		739	{
		740	GV *gv = CvGV (cx->blk_sub.cv);
		741	SV *fullname = sv_2mortal (newSV (0));
		742	if (isGV (gv))
		743	gv_efullname3 (fullname, gv, 0);
		744
		745	PUSHMARK (SP);
		746	PUSHs (&PL_sv_yes);
		747	PUSHs (fullname);
		748	PUSHs (cx->blk_sub.hasargs ? sv_2mortal (newRV_inc ((SV *)cx->blk_sub.argarray)) : &PL_sv_undef);
		749	PUTBACK;
		750	cb = hv_fetch ((HV *)SvRV (coro_current), "_trace_sub_cb", sizeof ("_trace_sub_cb") - 1, 0);
		751	if (cb) call_sv (*cb, G_KEEPERR \| G_EVAL \| G_VOID \| G_DISCARD);
		752	SPAGAIN;
		753	}
		754
		755	oldcxix = cxstack_ix;
		756	}
		757
		758	if (cctx->flags & CC_TRACE_LINE)
		759	{
		760	PUSHMARK (SP);
		761	PUSHs (sv_2mortal (newSVpv (OutCopFILE (oldcop), 0)));
		762	PUSHs (sv_2mortal (newSViv (CopLINE (oldcop))));
		763	PUTBACK;
		764	cb = hv_fetch ((HV *)SvRV (coro_current), "_trace_line_cb", sizeof ("_trace_line_cb") - 1, 0);
		765	if (cb) call_sv (*cb, G_KEEPERR \| G_EVAL \| G_VOID \| G_DISCARD);
		766	SPAGAIN;
		767	}
		768
		769	FREETMPS;
		770	LEAVE;
		771	PL_runops = old_runops;
		772	}
		773	}
		774	}
		775
		776	TAINT_NOT;
		777	return 0;
		778	}
		779
		780	/* inject a fake call to Coro::State::_cctx_init into the execution */
		781	/* _cctx_init should be careful, as it could be called at almost any time */
		782	/* during execution of a perl program */
605	static void NOINLINE	783	static void NOINLINE
606	prepare_cctx (coro_cctx *cctx)	784	prepare_cctx (pTHX_ coro_cctx *cctx)
607	{	785	{
608	dSP;	786	dSP;
609	LOGOP myop;	787	LOGOP myop;
610		788
		789	PL_top_env = &PL_start_env;
		790
		791	if (cctx->flags & CC_TRACE)
		792	PL_runops = runops_trace;
		793
611	Zero (&myop, 1, LOGOP);	794	Zero (&myop, 1, LOGOP);
612	myop.op_next = PL_op;	795	myop.op_next = PL_op;
613	myop.op_flags = OPf_WANT_VOID;	796	myop.op_flags = OPf_WANT_VOID \| OPf_STACKED;
614
615	sv_setiv (get_sv ("Coro::State::_cctx", FALSE), PTR2IV (cctx));
616		797
617	PUSHMARK (SP);	798	PUSHMARK (SP);
		799	EXTEND (SP, 2);
		800	PUSHs (sv_2mortal (newSViv (PTR2IV (cctx))));
618	XPUSHs ((SV *)get_cv ("Coro::State::_cctx_init", FALSE));	801	PUSHs ((SV *)get_cv ("Coro::State::_cctx_init", FALSE));
619	PUTBACK;	802	PUTBACK;
		803	PL_op = (OP *)&myop;
620	PL_restartop = PL_ppaddr[OP_ENTERSUB](aTHX);	804	PL_op = PL_ppaddr[OP_ENTERSUB](aTHX);
621	SPAGAIN;	805	SPAGAIN;
622	}	806	}
623		807
		808	/*
		809	* this is a _very_ stripped down perl interpreter ;)
		810	*/
624	static void	811	static void
625	coro_run (void *arg)	812	coro_run (void *arg)
626	{	813	{
		814	dTHX;
		815
627	/* coro_run is the alternative epilogue of transfer() */	816	/* coro_run is the alternative tail of transfer(), so unlock here. */
628	UNLOCK;	817	UNLOCK;
629		818
		819	/* we now skip the entersub that lead to transfer() */
		820	PL_op = PL_op->op_next;
		821
		822	/* inject a fake subroutine call to cctx_init */
		823	prepare_cctx (aTHX_ (coro_cctx *)arg);
		824
		825	/* somebody or something will hit me for both perl_run and PL_restartop */
		826	PL_restartop = PL_op;
		827	perl_run (PL_curinterp);
		828
630	/*	829	/*
631	* this is a _very_ stripped down perl interpreter ;)	830	* If perl-run returns we assume exit() was being called or the coro
		831	* fell off the end, which seems to be the only valid (non-bug)
		832	* reason for perl_run to return. We try to exit by jumping to the
		833	* bootstrap-time "top" top_env, as we cannot restore the "main"
		834	* coroutine as Coro has no such concept
632	*/	835	*/
633	PL_top_env = &PL_start_env;	836	PL_top_env = main_top_env;
634		837	JMPENV_JUMP (2); /* I do not feel well about the hardcoded 2 at all */
635	/* inject call to cctx_init */
636	prepare_cctx ((coro_cctx *)arg);
637
638	/* somebody will hit me for both perl_run and PL_restartop */
639	perl_run (PL_curinterp);
640
641	fputs ("FATAL: C coroutine fell over the edge of the world, aborting. Did you call exit in a coroutine?\n", stderr);
642	abort ();
643	}	838	}
644		839
645	static coro_cctx *	840	static coro_cctx *
646	cctx_new ()	841	cctx_new ()
647	{	842	{
648	coro_cctx *cctx;	843	coro_cctx *cctx;
		844	void *stack_start;
		845	size_t stack_size;
649		846
650	++cctx_count;	847	++cctx_count;
651		848
652	New (0, cctx, 1, coro_cctx);	849	Newz (0, cctx, 1, coro_cctx);
653		850
654	#if HAVE_MMAP	851	#if HAVE_MMAP
655		852
656	cctx->ssize = ((STACKSIZE * sizeof (long) + PAGESIZE - 1) / PAGESIZE + STACKGUARD) * PAGESIZE;	853	cctx->ssize = ((coro_stacksize * sizeof (long) + PAGESIZE - 1) / PAGESIZE + CORO_STACKGUARD) * PAGESIZE;
657	/* mmap suppsedly does allocate-on-write for us */	854	/* mmap supposedly does allocate-on-write for us */
658	cctx->sptr = mmap (0, cctx->ssize, PROT_EXEC\|PROT_READ\|PROT_WRITE, MAP_PRIVATE\|MAP_ANONYMOUS, 0, 0);	855	cctx->sptr = mmap (0, cctx->ssize, PROT_EXEC\|PROT_READ\|PROT_WRITE, MAP_PRIVATE\|MAP_ANONYMOUS, 0, 0);
659		856
660	if (cctx->sptr == (void *)-1)	857	if (cctx->sptr != (void *)-1)
661	{
662	perror ("FATAL: unable to mmap stack for coroutine");
663	_exit (EXIT_FAILURE);
664	}	858	{
665
666	# if STACKGUARD	859	# if CORO_STACKGUARD
667	mprotect (cctx->sptr, STACKGUARD * PAGESIZE, PROT_NONE);	860	mprotect (cctx->sptr, CORO_STACKGUARD * PAGESIZE, PROT_NONE);
668	# endif	861	# endif
		862	stack_start = CORO_STACKGUARD * PAGESIZE + (char *)cctx->sptr;
		863	stack_size = cctx->ssize - CORO_STACKGUARD * PAGESIZE;
		864	cctx->flags \|= CC_MAPPED;
		865	}
		866	else
		867	#endif
		868	{
		869	cctx->ssize = coro_stacksize * (long)sizeof (long);
		870	New (0, cctx->sptr, coro_stacksize, long);
669		871
670	#else
671
672	cctx->ssize = STACKSIZE * (long)sizeof (long);
673	New (0, cctx->sptr, STACKSIZE, long);
674
675	if (!cctx->sptr)	872	if (!cctx->sptr)
676	{	873	{
677	perror ("FATAL: unable to malloc stack for coroutine");	874	perror ("FATAL: unable to allocate stack for coroutine");
678	_exit (EXIT_FAILURE);	875	_exit (EXIT_FAILURE);
679	}	876	}
680		877
681	#endif	878	stack_start = cctx->sptr;
		879	stack_size = cctx->ssize;
		880	}
682		881
683	#if USE_VALGRIND	882	REGISTER_STACK (cctx, (char )stack_start, (char )stack_start + stack_size);
684	cctx->valgrind_id = VALGRIND_STACK_REGISTER (
685	STACKGUARD * PAGESIZE + (char *)cctx->sptr,
686	cctx->ssize + (char *)cctx->sptr
687	);
688	#endif
689
690	coro_create (&cctx->cctx, coro_run, (void *)cctx, cctx->sptr, cctx->ssize);	883	coro_create (&cctx->cctx, coro_run, (void *)cctx, stack_start, stack_size);
691		884
692	return cctx;	885	return cctx;
693	}	886	}
694		887
695	static void	888	static void
696	cctx_free (coro_cctx *cctx)	889	cctx_destroy (coro_cctx *cctx)
697	{	890	{
698	if (!cctx)	891	if (!cctx)
699	return;	892	return;
700		893
701	--cctx_count;	894	--cctx_count;
702		895
703	#if USE_VALGRIND	896	#if CORO_USE_VALGRIND
704	VALGRIND_STACK_DEREGISTER (cctx->valgrind_id);	897	VALGRIND_STACK_DEREGISTER (cctx->valgrind_id);
705	#endif	898	#endif
706		899
707	#if HAVE_MMAP	900	#if HAVE_MMAP
		901	if (cctx->flags & CC_MAPPED)
708	munmap (cctx->sptr, cctx->ssize);	902	munmap (cctx->sptr, cctx->ssize);
709	#else	903	else
		904	#endif
710	Safefree (cctx->sptr);	905	Safefree (cctx->sptr);
711	#endif
712		906
713	Safefree (cctx);	907	Safefree (cctx);
714	}	908	}
715		909
716	static coro_cctx *	910	static coro_cctx *
717	cctx_get ()	911	cctx_get (pTHX)
718	{	912	{
719	coro_cctx *cctx;
720
721	if (cctx_first)	913	while (cctx_first)
722	{	914	{
		915	coro_cctx *cctx = cctx_first;
		916	cctx_first = cctx->next;
723	--cctx_idle;	917	--cctx_idle;
724	cctx = cctx_first;	918
725	cctx_first = cctx->next;	919	if (cctx->ssize >= coro_stacksize && !(cctx->flags & CC_NOREUSE))
726	}	920	return cctx;
727	else	921
728	{	922	cctx_destroy (cctx);
729	cctx = cctx_new ();
730	PL_op = PL_op->op_next;
731	}	923	}
732		924
733	return cctx;	925	return cctx_new ();
734	}	926	}
735		927
736	static void	928	static void
737	cctx_put (coro_cctx *cctx)	929	cctx_put (coro_cctx *cctx)
738	{	930	{
		931	/* free another cctx if overlimit */
		932	if (cctx_idle >= MAX_IDLE_CCTX)
		933	{
		934	coro_cctx *first = cctx_first;
		935	cctx_first = first->next;
		936	--cctx_idle;
		937
		938	cctx_destroy (first);
		939	}
		940
739	++cctx_idle;	941	++cctx_idle;
740	cctx->next = cctx_first;	942	cctx->next = cctx_first;
741	cctx_first = cctx;	943	cctx_first = cctx;
742	}	944	}
743		945
744	/* never call directly, always through the coro_state_transfer global variable */	946	/ coroutine switching ***************************************************/
		947
745	static void NOINLINE	948	static void NOINLINE
		949	transfer_check (pTHX_ struct coro prev, struct coro next)
		950	{
		951	if (prev != next)
		952	{
		953	if (!(prev->flags & (CF_RUNNING \| CF_NEW)))
		954	croak ("Coro::State::transfer called with non-running/new prev Coro::State, but can only transfer from running or new states");
		955
		956	if (next->flags & CF_RUNNING)
		957	croak ("Coro::State::transfer called with running next Coro::State, but can only transfer to inactive states");
		958
		959	if (next->flags & CF_DESTROYED)
		960	croak ("Coro::State::transfer called with destroyed next Coro::State, but can only transfer to inactive states");
		961
		962	if (PL_lex_state != LEX_NOTPARSING)
		963	croak ("Coro::State::transfer called while parsing, but this is not supported");
		964	}
		965	}
		966
		967	/* always use the TRANSFER macro */
		968	static void NOINLINE
746	transfer (struct coro prev, struct coro next, int flags)	969	transfer (pTHX_ struct coro prev, struct coro next)
747	{	970	{
748	dSTACKLEVEL;	971	dSTACKLEVEL;
749		972
750	/* sometimes transfer is only called to set idle_sp */	973	/* sometimes transfer is only called to set idle_sp */
751	if (flags == TRANSFER_SET_STACKLEVEL)	974	if (!next)
		975	{
752	((coro_cctx *)prev)->idle_sp = STACKLEVEL;	976	((coro_cctx *)prev)->idle_sp = STACKLEVEL;
		977	assert (((coro_cctx )prev)->idle_te = PL_top_env); / just for the side-effect when asserts are enabled */
		978	}
753	else if (prev != next)	979	else if (prev != next)
754	{	980	{
755	coro_cctx *prev__cctx;	981	coro_cctx *prev__cctx;
756		982
		983	if (prev->flags & CF_NEW)
		984	{
		985	/* create a new empty context */
		986	Newz (0, prev->cctx, 1, coro_cctx);
		987	prev->flags &= ~CF_NEW;
		988	prev->flags \|= CF_RUNNING;
		989	}
		990
		991	prev->flags &= ~CF_RUNNING;
		992	next->flags \|= CF_RUNNING;
		993
757	LOCK;	994	LOCK;
758		995
759	if (next->mainstack)	996	if (next->flags & CF_NEW)
760	{	997	{
761	/* coroutine already started */	998	/* need to start coroutine */
762	SAVE (prev, flags);	999	next->flags &= ~CF_NEW;
763	LOAD (next);	1000	/* first get rid of the old state */
		1001	save_perl (aTHX_ prev);
		1002	/* setup coroutine call */
		1003	setup_coro (aTHX_ next);
764	}	1004	}
765	else	1005	else
766	{	1006	{
767	/* need to start coroutine */	1007	/* coroutine already started */
768	/* first get rid of the old state */	1008	save_perl (aTHX_ prev);
769	SAVE (prev, -1);	1009	load_perl (aTHX_ next);
770	/* setup coroutine call */
771	setup_coro (next);
772	/* need a stack */
773	next->cctx = 0;
774	}	1010	}
775		1011
776	if (!prev->cctx)
777	/* create a new empty context */
778	Newz (0, prev->cctx, 1, coro_cctx);
779
780	prev__cctx = prev->cctx;	1012	prev__cctx = prev->cctx;
781		1013
782	/* possibly "free" the cctx */	1014	/* possibly "free" the cctx */
783	if (prev__cctx->idle_sp == STACKLEVEL)	1015	if (prev__cctx->idle_sp == STACKLEVEL && !(prev__cctx->flags & CC_TRACE))
784	{	1016	{
		1017	/* I assume that STACKLEVEL is a stronger indicator than PL_top_env changes */
		1018	assert (("ERROR: current top_env must equal previous top_env", PL_top_env == prev__cctx->idle_te));
		1019
		1020	prev->cctx = 0;
		1021
785	cctx_put (prev__cctx);	1022	cctx_put (prev__cctx);
786	prev->cctx = 0;
787	}	1023	}
788		1024
		1025	++next->usecount;
		1026
789	if (!next->cctx)	1027	if (!next->cctx)
790	next->cctx = cctx_get ();	1028	next->cctx = cctx_get (aTHX);
791		1029
792	if (prev__cctx != next->cctx)	1030	if (prev__cctx != next->cctx)
793	{	1031	{
794	prev__cctx->top_env = PL_top_env;	1032	prev__cctx->top_env = PL_top_env;
795	PL_top_env = next->cctx->top_env;	1033	PL_top_env = next->cctx->top_env;
796	coro_transfer (&prev__cctx->cctx, &next->cctx->cctx);	1034	coro_transfer (&prev__cctx->cctx, &next->cctx->cctx);
797	}	1035	}
798		1036
799	free_coro_mortal ();	1037	free_coro_mortal (aTHX);
800
801	UNLOCK;	1038	UNLOCK;
802	}	1039	}
803	}	1040	}
804		1041
805	struct transfer_args	1042	struct transfer_args
806	{	1043	{
807	struct coro prev, next;	1044	struct coro prev, next;
808	int flags;
809	};	1045	};
810		1046
811	#define TRANSFER(ta) transfer ((ta).prev, (ta).next, (ta).flags)	1047	#define TRANSFER(ta) transfer (aTHX_ (ta).prev, (ta).next)
		1048	#define TRANSFER_CHECK(ta) transfer_check (aTHX_ (ta).prev, (ta).next)
812		1049
		1050	/ high level stuff ******************************************************/
		1051
813	static void	1052	static int
814	coro_state_destroy (struct coro *coro)	1053	coro_state_destroy (pTHX_ struct coro *coro)
815	{	1054	{
816	if (coro->refcnt--)	1055	if (coro->flags & CF_DESTROYED)
817	return;	1056	return 0;
		1057
		1058	coro->flags \|= CF_DESTROYED;
		1059
		1060	if (coro->flags & CF_READY)
		1061	{
		1062	/* reduce nready, as destroying a ready coro effectively unreadies it */
		1063	/* alternative: look through all ready queues and remove the coro */
		1064	LOCK;
		1065	--coro_nready;
		1066	UNLOCK;
		1067	}
		1068	else
		1069	coro->flags \|= CF_READY; /* make sure it is NOT put into the readyqueue */
818		1070
819	if (coro->mainstack && coro->mainstack != main_mainstack)	1071	if (coro->mainstack && coro->mainstack != main_mainstack)
820	{	1072	{
821	struct coro temp;	1073	struct coro temp;
822		1074
823	SAVE ((&temp), TRANSFER_SAVE_ALL);	1075	assert (!(coro->flags & CF_RUNNING));
824	LOAD (coro);
825		1076
		1077	Zero (&temp, 1, struct coro);
		1078	temp.save = CORO_SAVE_ALL;
		1079
		1080	if (coro->flags & CF_RUNNING)
		1081	croak ("FATAL: tried to destroy currently running coroutine");
		1082
		1083	save_perl (aTHX_ &temp);
		1084	load_perl (aTHX_ coro);
		1085
826	coro_destroy_stacks ();	1086	coro_destroy_stacks (aTHX);
827		1087
828	LOAD ((&temp)); /* this will get rid of defsv etc.. */	1088	load_perl (aTHX_ &temp); /* this will get rid of defsv etc.. */
829		1089
830	coro->mainstack = 0;	1090	coro->mainstack = 0;
831	}	1091	}
832		1092
833	cctx_free (coro->cctx);	1093	cctx_destroy (coro->cctx);
834	SvREFCNT_dec (coro->args);	1094	SvREFCNT_dec (coro->args);
835	Safefree (coro);	1095
		1096	if (coro->next) coro->next->prev = coro->prev;
		1097	if (coro->prev) coro->prev->next = coro->next;
		1098	if (coro == coro_first) coro_first = coro->next;
		1099
		1100	return 1;
836	}	1101	}
837		1102
838	static int	1103	static int
839	coro_state_clear (pTHX_ SV sv, MAGIC mg)	1104	coro_state_free (pTHX_ SV sv, MAGIC mg)
840	{	1105	{
841	struct coro coro = (struct coro )mg->mg_ptr;	1106	struct coro coro = (struct coro )mg->mg_ptr;
842	mg->mg_ptr = 0;	1107	mg->mg_ptr = 0;
843		1108
		1109	coro->hv = 0;
		1110
		1111	if (--coro->refcnt < 0)
		1112	{
844	coro_state_destroy (coro);	1113	coro_state_destroy (aTHX_ coro);
		1114	Safefree (coro);
		1115	}
845		1116
846	return 0;	1117	return 0;
847	}	1118	}
848		1119
849	static int	1120	static int
…		…
856	return 0;	1127	return 0;
857	}	1128	}
858		1129
859	static MGVTBL coro_state_vtbl = {	1130	static MGVTBL coro_state_vtbl = {
860	0, 0, 0, 0,	1131	0, 0, 0, 0,
861	coro_state_clear,	1132	coro_state_free,
862	0,	1133	0,
863	#ifdef MGf_DUP	1134	#ifdef MGf_DUP
864	coro_state_dup,	1135	coro_state_dup,
865	#else	1136	#else
866	# define MGf_DUP 0	1137	# define MGf_DUP 0
867	#endif	1138	#endif
868	};	1139	};
869		1140
870	static struct coro *
871	SvSTATE (SV *coro)
872	{
873	HV *stash;
874	MAGIC *mg;
875
876	if (SvROK (coro))
877	coro = SvRV (coro);
878
879	stash = SvSTASH (coro);
880	if (stash != coro_stash && stash != coro_state_stash)
881	{
882	/* very slow, but rare, check */
883	if (!sv_derived_from (sv_2mortal (newRV_inc (coro)), "Coro::State"))
884	croak ("Coro::State object required");
885	}
886
887	mg = SvMAGIC (coro);
888	assert (mg->mg_type == PERL_MAGIC_ext);
889	return (struct coro *)mg->mg_ptr;
890	}
891
892	static void	1141	static void
893	prepare_transfer (struct transfer_args ta, SV prev, SV *next, int flags)	1142	prepare_transfer (pTHX_ struct transfer_args ta, SV prev_sv, SV *next_sv)
894	{	1143	{
895	ta->prev = SvSTATE (prev);	1144	ta->prev = SvSTATE (prev_sv);
896	ta->next = SvSTATE (next);	1145	ta->next = SvSTATE (next_sv);
897	ta->flags = flags;	1146	TRANSFER_CHECK (*ta);
898	}	1147	}
899		1148
900	static void	1149	static void
901	api_transfer (SV prev, SV next, int flags)	1150	api_transfer (SV prev_sv, SV next_sv)
902	{	1151	{
903	dTHX;	1152	dTHX;
904	struct transfer_args ta;	1153	struct transfer_args ta;
905		1154
906	prepare_transfer (&ta, prev, next, flags);	1155	prepare_transfer (aTHX_ &ta, prev_sv, next_sv);
907	TRANSFER (ta);	1156	TRANSFER (ta);
908	}	1157	}
909		1158
		1159	static int
		1160	api_save (SV *coro_sv, int new_save)
		1161	{
		1162	dTHX;
		1163	struct coro *coro = SvSTATE (coro_sv);
		1164	int old_save = coro->save;
		1165
		1166	if (new_save >= 0)
		1167	coro->save = new_save;
		1168
		1169	return old_save;
		1170	}
		1171
910	/ Coro ******************************************************************/	1172	/ Coro ******************************************************************/
911		1173
912	#define PRIO_MAX 3
913	#define PRIO_HIGH 1
914	#define PRIO_NORMAL 0
915	#define PRIO_LOW -1
916	#define PRIO_IDLE -3
917	#define PRIO_MIN -4
918
919	/* for Coro.pm */
920	static GV coro_current, coro_idle;
921	static AV *coro_ready [PRIO_MAX-PRIO_MIN+1];
922	static int coro_nready;
923
924	static void	1174	static void
925	coro_enq (SV *sv)	1175	coro_enq (pTHX_ SV *coro_sv)
926	{	1176	{
927	int prio;
928
929	if (SvTYPE (sv) != SVt_PVHV)
930	croak ("Coro::ready tried to enqueue something that is not a coroutine");
931
932	prio = SvSTATE (sv)->prio;
933
934	av_push (coro_ready [prio - PRIO_MIN], sv);	1177	av_push (coro_ready [SvSTATE (coro_sv)->prio - PRIO_MIN], coro_sv);
935	coro_nready++;
936	}	1178	}
937		1179
938	static SV *	1180	static SV *
939	coro_deq (int min_prio)	1181	coro_deq (pTHX_ int min_prio)
940	{	1182	{
941	int prio = PRIO_MAX - PRIO_MIN;	1183	int prio = PRIO_MAX - PRIO_MIN;
942		1184
943	min_prio -= PRIO_MIN;	1185	min_prio -= PRIO_MIN;
944	if (min_prio < 0)	1186	if (min_prio < 0)
945	min_prio = 0;	1187	min_prio = 0;
946		1188
947	for (prio = PRIO_MAX - PRIO_MIN + 1; --prio >= min_prio; )	1189	for (prio = PRIO_MAX - PRIO_MIN + 1; --prio >= min_prio; )
948	if (AvFILLp (coro_ready [prio]) >= 0)	1190	if (AvFILLp (coro_ready [prio]) >= 0)
949	{
950	coro_nready--;
951	return av_shift (coro_ready [prio]);	1191	return av_shift (coro_ready [prio]);
952	}
953		1192
954	return 0;	1193	return 0;
955	}	1194	}
956		1195
		1196	static int
		1197	api_ready (SV *coro_sv)
		1198	{
		1199	dTHX;
		1200	struct coro *coro;
		1201
		1202	if (SvROK (coro_sv))
		1203	coro_sv = SvRV (coro_sv);
		1204
		1205	coro = SvSTATE (coro_sv);
		1206
		1207	if (coro->flags & CF_READY)
		1208	return 0;
		1209
		1210	coro->flags \|= CF_READY;
		1211
		1212	LOCK;
		1213	coro_enq (aTHX_ SvREFCNT_inc (coro_sv));
		1214	++coro_nready;
		1215	UNLOCK;
		1216
		1217	return 1;
		1218	}
		1219
		1220	static int
		1221	api_is_ready (SV *coro_sv)
		1222	{
		1223	dTHX;
		1224	return !!(SvSTATE (coro_sv)->flags & CF_READY);
		1225	}
		1226
957	static void	1227	static void
958	api_ready (SV *coro)	1228	prepare_schedule (pTHX_ struct transfer_args *ta)
959	{	1229	{
960	dTHX;	1230	SV prev_sv, next_sv;
961		1231
962	if (SvROK (coro))	1232	for (;;)
963	coro = SvRV (coro);	1233	{
		1234	LOCK;
		1235	next_sv = coro_deq (aTHX_ PRIO_MIN);
		1236
		1237	/* nothing to schedule: call the idle handler */
		1238	if (!next_sv)
		1239	{
		1240	dSP;
		1241	UNLOCK;
		1242
		1243	ENTER;
		1244	SAVETMPS;
		1245
		1246	PUSHMARK (SP);
		1247	PUTBACK;
		1248	call_sv (get_sv ("Coro::idle", FALSE), G_DISCARD);
		1249
		1250	FREETMPS;
		1251	LEAVE;
		1252	continue;
		1253	}
		1254
		1255	ta->next = SvSTATE (next_sv);
		1256
		1257	/* cannot transfer to destroyed coros, skip and look for next */
		1258	if (ta->next->flags & CF_DESTROYED)
		1259	{
		1260	UNLOCK;
		1261	SvREFCNT_dec (next_sv);
		1262	/* coro_nready is already taken care of by destroy */
		1263	continue;
		1264	}
		1265
		1266	--coro_nready;
		1267	UNLOCK;
		1268	break;
		1269	}
		1270
		1271	/* free this only after the transfer */
		1272	prev_sv = SvRV (coro_current);
		1273	ta->prev = SvSTATE (prev_sv);
		1274	TRANSFER_CHECK (*ta);
		1275	assert (ta->next->flags & CF_READY);
		1276	ta->next->flags &= ~CF_READY;
		1277	SvRV_set (coro_current, next_sv);
964		1278
965	LOCK;	1279	LOCK;
966	coro_enq (SvREFCNT_inc (coro));	1280	free_coro_mortal (aTHX);
		1281	coro_mortal = prev_sv;
967	UNLOCK;	1282	UNLOCK;
968	}	1283	}
969		1284
970	static void	1285	static void
971	prepare_schedule (struct transfer_args *ta)
972	{
973	SV current, prev, *next;
974
975	current = GvSV (coro_current);
976
977	for (;;)
978	{
979	LOCK;
980	next = coro_deq (PRIO_MIN);
981	UNLOCK;
982
983	if (next)
984	break;
985
986	{
987	dSP;
988
989	ENTER;
990	SAVETMPS;
991
992	PUSHMARK (SP);
993	PUTBACK;
994	call_sv (GvSV (coro_idle), G_DISCARD);
995
996	FREETMPS;
997	LEAVE;
998	}
999	}
1000
1001	prev = SvRV (current);
1002	SvRV (current) = next;
1003
1004	/* free this only after the transfer */
1005	LOCK;
1006	free_coro_mortal ();
1007	UNLOCK;
1008	coro_mortal = prev;
1009
1010	ta->prev = SvSTATE (prev);
1011	ta->next = SvSTATE (next);
1012	ta->flags = TRANSFER_SAVE_ALL;
1013	}
1014
1015	static void
1016	prepare_cede (struct transfer_args *ta)	1286	prepare_cede (pTHX_ struct transfer_args *ta)
1017	{	1287	{
1018	LOCK;	1288	api_ready (coro_current);
1019	coro_enq (SvREFCNT_inc (SvRV (GvSV (coro_current))));
1020	UNLOCK;
1021
1022	prepare_schedule (ta);	1289	prepare_schedule (aTHX_ ta);
		1290	}
		1291
		1292	static int
		1293	prepare_cede_notself (pTHX_ struct transfer_args *ta)
		1294	{
		1295	if (coro_nready)
		1296	{
		1297	SV *prev = SvRV (coro_current);
		1298	prepare_schedule (aTHX_ ta);
		1299	api_ready (prev);
		1300	return 1;
		1301	}
		1302	else
		1303	return 0;
1023	}	1304	}
1024		1305
1025	static void	1306	static void
1026	api_schedule (void)	1307	api_schedule (void)
1027	{	1308	{
1028	dTHX;	1309	dTHX;
1029	struct transfer_args ta;	1310	struct transfer_args ta;
1030		1311
1031	prepare_schedule (&ta);	1312	prepare_schedule (aTHX_ &ta);
1032	TRANSFER (ta);	1313	TRANSFER (ta);
1033	}	1314	}
1034		1315
1035	static void	1316	static int
1036	api_cede (void)	1317	api_cede (void)
1037	{	1318	{
1038	dTHX;	1319	dTHX;
1039	struct transfer_args ta;	1320	struct transfer_args ta;
1040		1321
1041	prepare_cede (&ta);	1322	prepare_cede (aTHX_ &ta);
		1323
		1324	if (ta.prev != ta.next)
		1325	{
1042	TRANSFER (ta);	1326	TRANSFER (ta);
		1327	return 1;
		1328	}
		1329	else
		1330	return 0;
		1331	}
		1332
		1333	static int
		1334	api_cede_notself (void)
		1335	{
		1336	dTHX;
		1337	struct transfer_args ta;
		1338
		1339	if (prepare_cede_notself (aTHX_ &ta))
		1340	{
		1341	TRANSFER (ta);
		1342	return 1;
		1343	}
		1344	else
		1345	return 0;
1043	}	1346	}
1044		1347
1045	MODULE = Coro::State PACKAGE = Coro::State	1348	MODULE = Coro::State PACKAGE = Coro::State
1046		1349
1047	PROTOTYPES: DISABLE	1350	PROTOTYPES: DISABLE
…		…
1053	#endif	1356	#endif
1054	BOOT_PAGESIZE;	1357	BOOT_PAGESIZE;
1055		1358
1056	coro_state_stash = gv_stashpv ("Coro::State", TRUE);	1359	coro_state_stash = gv_stashpv ("Coro::State", TRUE);
1057		1360
		1361	newCONSTSUB (coro_state_stash, "CC_TRACE" , newSViv (CC_TRACE));
		1362	newCONSTSUB (coro_state_stash, "CC_TRACE_SUB" , newSViv (CC_TRACE_SUB));
		1363	newCONSTSUB (coro_state_stash, "CC_TRACE_LINE", newSViv (CC_TRACE_LINE));
		1364	newCONSTSUB (coro_state_stash, "CC_TRACE_ALL" , newSViv (CC_TRACE_ALL));
		1365
1058	newCONSTSUB (coro_state_stash, "SAVE_DEFAV", newSViv (TRANSFER_SAVE_DEFAV));	1366	newCONSTSUB (coro_state_stash, "SAVE_DEFAV", newSViv (CORO_SAVE_DEFAV));
1059	newCONSTSUB (coro_state_stash, "SAVE_DEFSV", newSViv (TRANSFER_SAVE_DEFSV));	1367	newCONSTSUB (coro_state_stash, "SAVE_DEFSV", newSViv (CORO_SAVE_DEFSV));
1060	newCONSTSUB (coro_state_stash, "SAVE_ERRSV", newSViv (TRANSFER_SAVE_ERRSV));	1368	newCONSTSUB (coro_state_stash, "SAVE_ERRSV", newSViv (CORO_SAVE_ERRSV));
		1369	newCONSTSUB (coro_state_stash, "SAVE_IRSSV", newSViv (CORO_SAVE_IRSSV));
		1370	newCONSTSUB (coro_state_stash, "SAVE_DEFFH", newSViv (CORO_SAVE_DEFFH));
		1371	newCONSTSUB (coro_state_stash, "SAVE_DEF", newSViv (CORO_SAVE_DEF));
		1372	newCONSTSUB (coro_state_stash, "SAVE_ALL", newSViv (CORO_SAVE_ALL));
1061		1373
1062	main_mainstack = PL_mainstack;	1374	main_mainstack = PL_mainstack;
		1375	main_top_env = PL_top_env;
		1376
		1377	while (main_top_env->je_prev)
		1378	main_top_env = main_top_env->je_prev;
1063		1379
1064	coroapi.ver = CORO_API_VERSION;	1380	coroapi.ver = CORO_API_VERSION;
1065	coroapi.transfer = api_transfer;	1381	coroapi.transfer = api_transfer;
1066		1382
1067	assert (("PRIO_NORMAL must be 0", !PRIO_NORMAL));	1383	assert (("PRIO_NORMAL must be 0", !PRIO_NORMAL));
…		…
1075	HV *hv;	1391	HV *hv;
1076	int i;	1392	int i;
1077		1393
1078	Newz (0, coro, 1, struct coro);	1394	Newz (0, coro, 1, struct coro);
1079	coro->args = newAV ();	1395	coro->args = newAV ();
		1396	coro->save = CORO_SAVE_DEF;
		1397	coro->flags = CF_NEW;
1080		1398
		1399	if (coro_first) coro_first->prev = coro;
		1400	coro->next = coro_first;
		1401	coro_first = coro;
		1402
1081	hv = newHV ();	1403	coro->hv = hv = newHV ();
1082	sv_magicext ((SV )hv, 0, PERL_MAGIC_ext, &coro_state_vtbl, (char )coro, 0)->mg_flags \|= MGf_DUP;	1404	sv_magicext ((SV )hv, 0, PERL_MAGIC_ext, &coro_state_vtbl, (char )coro, 0)->mg_flags \|= MGf_DUP;
1083	RETVAL = sv_bless (newRV_noinc ((SV *)hv), gv_stashpv (klass, 1));	1405	RETVAL = sv_bless (newRV_noinc ((SV *)hv), gv_stashpv (klass, 1));
1084		1406
1085	for (i = 1; i < items; i++)	1407	for (i = 1; i < items; i++)
1086	av_push (coro->args, newSVsv (ST (i)));	1408	av_push (coro->args, newSVsv (ST (i)));
1087	}	1409	}
1088	OUTPUT:	1410	OUTPUT:
		1411	RETVAL
		1412
		1413	int
		1414	save (SV *coro, int new_save = -1)
		1415	CODE:
		1416	RETVAL = api_save (coro, new_save);
		1417	OUTPUT:
		1418	RETVAL
		1419
		1420	int
		1421	save_also (SV *coro_sv, int save_also)
		1422	CODE:
		1423	{
		1424	struct coro *coro = SvSTATE (coro_sv);
		1425	RETVAL = coro->save;
		1426	coro->save \|= save_also;
		1427	}
		1428	OUTPUT:
1089	RETVAL	1429	RETVAL
1090		1430
1091	void	1431	void
1092	_set_stacklevel (...)	1432	_set_stacklevel (...)
1093	ALIAS:	1433	ALIAS:
1094	Coro::State::transfer = 1	1434	Coro::State::transfer = 1
1095	Coro::schedule = 2	1435	Coro::schedule = 2
1096	Coro::cede = 3	1436	Coro::cede = 3
1097	Coro::Cont::yield = 4	1437	Coro::cede_notself = 4
1098	CODE:	1438	CODE:
1099	{	1439	{
1100	struct transfer_args ta;	1440	struct transfer_args ta;
1101		1441
1102	switch (ix)	1442	switch (ix)
1103	{	1443	{
1104	case 0:	1444	case 0:
1105	ta.prev = (struct coro )INT2PTR (coro_cctx , SvIV (ST (0)));	1445	ta.prev = (struct coro )INT2PTR (coro_cctx , SvIV (ST (0)));
1106	ta.next = 0;	1446	ta.next = 0;
1107	ta.flags = TRANSFER_SET_STACKLEVEL;
1108	break;	1447	break;
1109		1448
1110	case 1:	1449	case 1:
1111	if (items != 3)	1450	if (items != 2)
1112	croak ("Coro::State::transfer(prev,next,flags) expects three arguments, not %d", items);	1451	croak ("Coro::State::transfer (prev,next) expects two arguments, not %d", items);
1113		1452
1114	prepare_transfer (&ta, ST (0), ST (1), SvIV (ST (2)));	1453	prepare_transfer (aTHX_ &ta, ST (0), ST (1));
1115	break;	1454	break;
1116		1455
1117	case 2:	1456	case 2:
1118	prepare_schedule (&ta);	1457	prepare_schedule (aTHX_ &ta);
1119	break;	1458	break;
1120		1459
1121	case 3:	1460	case 3:
1122	prepare_cede (&ta);	1461	prepare_cede (aTHX_ &ta);
1123	break;	1462	break;
1124		1463
1125	case 4:	1464	case 4:
1126	{	1465	if (!prepare_cede_notself (aTHX_ &ta))
1127	SV *yieldstack;	1466	XSRETURN_EMPTY;
1128	SV *sv;
1129	AV *defav = GvAV (PL_defgv);
1130		1467
1131	yieldstack = *hv_fetch (
1132	(HV *)SvRV (GvSV (coro_current)),
1133	"yieldstack", sizeof ("yieldstack") - 1,
1134	0
1135	);
1136
1137	/* set up @_ -- ugly */
1138	av_clear (defav);
1139	av_fill (defav, items - 1);
1140	while (items--)
1141	av_store (defav, items, SvREFCNT_inc (ST(items)));
1142
1143	sv = av_pop ((AV *)SvRV (yieldstack));
1144	ta.prev = SvSTATE (av_fetch ((AV )SvRV (sv), 0, 0));
1145	ta.next = SvSTATE (av_fetch ((AV )SvRV (sv), 1, 0));
1146	ta.flags = 0;
1147	SvREFCNT_dec (sv);
1148	}
1149	break;	1468	break;
1150
1151	}	1469	}
1152		1470
		1471	BARRIER;
1153	TRANSFER (ta);	1472	TRANSFER (ta);
1154	}
1155		1473
1156	void	1474	if (GIMME_V != G_VOID && ta.next != ta.prev)
1157	_clone_state_from (SV dst, SV src)	1475	XSRETURN_YES;
		1476	}
		1477
		1478	bool
		1479	_destroy (SV *coro_sv)
1158	CODE:	1480	CODE:
1159	{	1481	RETVAL = coro_state_destroy (aTHX_ SvSTATE (coro_sv));
1160	struct coro *coro_src = SvSTATE (src);	1482	OUTPUT:
1161		1483	RETVAL
1162	sv_unmagic (SvRV (dst), PERL_MAGIC_ext);
1163
1164	++coro_src->refcnt;
1165	sv_magicext (SvRV (dst), 0, PERL_MAGIC_ext, &coro_state_vtbl, (char *)coro_src, 0)->mg_flags \|= MGf_DUP;
1166	}
1167		1484
1168	void	1485	void
1169	_exit (code)	1486	_exit (code)
1170	int code	1487	int code
1171	PROTOTYPE: $	1488	PROTOTYPE: $
1172	CODE:	1489	CODE:
1173	_exit (code);	1490	_exit (code);
1174		1491
1175	int	1492	int
		1493	cctx_stacksize (int new_stacksize = 0)
		1494	CODE:
		1495	RETVAL = coro_stacksize;
		1496	if (new_stacksize)
		1497	coro_stacksize = new_stacksize;
		1498	OUTPUT:
		1499	RETVAL
		1500
		1501	int
1176	cctx_count ()	1502	cctx_count ()
1177	CODE:	1503	CODE:
1178	RETVAL = cctx_count;	1504	RETVAL = cctx_count;
1179	OUTPUT:	1505	OUTPUT:
1180	RETVAL	1506	RETVAL
…		…
1184	CODE:	1510	CODE:
1185	RETVAL = cctx_idle;	1511	RETVAL = cctx_idle;
1186	OUTPUT:	1512	OUTPUT:
1187	RETVAL	1513	RETVAL
1188		1514
		1515	void
		1516	list ()
		1517	PPCODE:
		1518	{
		1519	struct coro *coro;
		1520	for (coro = coro_first; coro; coro = coro->next)
		1521	if (coro->hv)
		1522	XPUSHs (sv_2mortal (newRV_inc ((SV *)coro->hv)));
		1523	}
		1524
		1525	void
		1526	call (Coro::State coro, SV *coderef)
		1527	ALIAS:
		1528	eval = 1
		1529	CODE:
		1530	{
		1531	if (coro->mainstack)
		1532	{
		1533	struct coro temp;
		1534	Zero (&temp, 1, struct coro);
		1535	temp.save = CORO_SAVE_ALL;
		1536
		1537	if (!(coro->flags & CF_RUNNING))
		1538	{
		1539	save_perl (aTHX_ &temp);
		1540	load_perl (aTHX_ coro);
		1541	}
		1542
		1543	{
		1544	dSP;
		1545	ENTER;
		1546	SAVETMPS;
		1547	PUSHMARK (SP);
		1548	PUTBACK;
		1549	if (ix)
		1550	eval_sv (coderef, 0);
		1551	else
		1552	call_sv (coderef, G_KEEPERR \| G_EVAL \| G_VOID \| G_DISCARD);
		1553	SPAGAIN;
		1554	FREETMPS;
		1555	LEAVE;
		1556	PUTBACK;
		1557	}
		1558
		1559	if (!(coro->flags & CF_RUNNING))
		1560	{
		1561	save_perl (aTHX_ coro);
		1562	load_perl (aTHX_ &temp);
		1563	}
		1564	}
		1565	}
		1566
		1567	SV *
		1568	is_ready (Coro::State coro)
		1569	PROTOTYPE: $
		1570	ALIAS:
		1571	is_ready = CF_READY
		1572	is_running = CF_RUNNING
		1573	is_new = CF_NEW
		1574	is_destroyed = CF_DESTROYED
		1575	CODE:
		1576	RETVAL = boolSV (coro->flags & ix);
		1577	OUTPUT:
		1578	RETVAL
		1579
		1580	void
		1581	trace (Coro::State coro, int flags = CC_TRACE \| CC_TRACE_SUB)
		1582	CODE:
		1583	if (flags & CC_TRACE)
		1584	{
		1585	if (!coro->cctx)
		1586	coro->cctx = cctx_new ();
		1587	else if (!(coro->cctx->flags & CC_TRACE))
		1588	croak ("cannot enable tracing on coroutine with custom stack");
		1589
		1590	coro->cctx->flags \|= flags & (CC_TRACE \| CC_TRACE_ALL);
		1591	}
		1592	else
		1593	if (coro->cctx && coro->cctx->flags & CC_TRACE)
		1594	{
		1595	coro->cctx->flags &= ~(CC_TRACE \| CC_TRACE_ALL);
		1596	coro->cctx->flags \|= CC_NOREUSE;
		1597
		1598	if (coro->flags & CF_RUNNING)
		1599	PL_runops = RUNOPS_DEFAULT;
		1600	else
		1601	coro->runops = RUNOPS_DEFAULT;
		1602	}
		1603
		1604	SV *
		1605	has_stack (Coro::State coro)
		1606	PROTOTYPE: $
		1607	CODE:
		1608	RETVAL = boolSV (!!coro->cctx);
		1609	OUTPUT:
		1610	RETVAL
		1611
		1612	int
		1613	is_traced (Coro::State coro)
		1614	PROTOTYPE: $
		1615	CODE:
		1616	RETVAL = (coro->cctx ? coro->cctx->flags : 0) & CC_TRACE_ALL;
		1617	OUTPUT:
		1618	RETVAL
		1619
		1620	IV
		1621	rss (Coro::State coro)
		1622	PROTOTYPE: $
		1623	ALIAS:
		1624	usecount = 1
		1625	CODE:
		1626	switch (ix)
		1627	{
		1628	case 0: RETVAL = coro_rss (aTHX_ coro); break;
		1629	case 1: RETVAL = coro->usecount; break;
		1630	}
		1631	OUTPUT:
		1632	RETVAL
		1633
		1634
1189	MODULE = Coro::State PACKAGE = Coro	1635	MODULE = Coro::State PACKAGE = Coro
1190		1636
1191	BOOT:	1637	BOOT:
1192	{	1638	{
1193	int i;	1639	int i;
		1640
		1641	sv_pool_rss = get_sv ("Coro::POOL_RSS" , TRUE);
		1642	sv_pool_size = get_sv ("Coro::POOL_SIZE" , TRUE);
		1643	av_async_pool = get_av ("Coro::async_pool", TRUE);
		1644
		1645	coro_current = get_sv ("Coro::current", FALSE);
		1646	SvREADONLY_on (coro_current);
1194		1647
1195	coro_stash = gv_stashpv ("Coro", TRUE);	1648	coro_stash = gv_stashpv ("Coro", TRUE);
1196		1649
1197	newCONSTSUB (coro_stash, "PRIO_MAX", newSViv (PRIO_MAX));	1650	newCONSTSUB (coro_stash, "PRIO_MAX", newSViv (PRIO_MAX));
1198	newCONSTSUB (coro_stash, "PRIO_HIGH", newSViv (PRIO_HIGH));	1651	newCONSTSUB (coro_stash, "PRIO_HIGH", newSViv (PRIO_HIGH));
1199	newCONSTSUB (coro_stash, "PRIO_NORMAL", newSViv (PRIO_NORMAL));	1652	newCONSTSUB (coro_stash, "PRIO_NORMAL", newSViv (PRIO_NORMAL));
1200	newCONSTSUB (coro_stash, "PRIO_LOW", newSViv (PRIO_LOW));	1653	newCONSTSUB (coro_stash, "PRIO_LOW", newSViv (PRIO_LOW));
1201	newCONSTSUB (coro_stash, "PRIO_IDLE", newSViv (PRIO_IDLE));	1654	newCONSTSUB (coro_stash, "PRIO_IDLE", newSViv (PRIO_IDLE));
1202	newCONSTSUB (coro_stash, "PRIO_MIN", newSViv (PRIO_MIN));	1655	newCONSTSUB (coro_stash, "PRIO_MIN", newSViv (PRIO_MIN));
1203		1656
1204	coro_current = gv_fetchpv ("Coro::current", TRUE, SVt_PV);
1205	coro_idle = gv_fetchpv ("Coro::idle" , TRUE, SVt_PV);
1206
1207	for (i = PRIO_MAX - PRIO_MIN + 1; i--; )	1657	for (i = PRIO_MAX - PRIO_MIN + 1; i--; )
1208	coro_ready[i] = newAV ();	1658	coro_ready[i] = newAV ();
1209		1659
1210	{	1660	{
1211	SV *sv = perl_get_sv("Coro::API", 1);	1661	SV *sv = perl_get_sv("Coro::API", 1);
1212		1662
1213	coroapi.schedule = api_schedule;	1663	coroapi.schedule = api_schedule;
		1664	coroapi.save = api_save;
1214	coroapi.cede = api_cede;	1665	coroapi.cede = api_cede;
		1666	coroapi.cede_notself = api_cede_notself;
1215	coroapi.ready = api_ready;	1667	coroapi.ready = api_ready;
		1668	coroapi.is_ready = api_is_ready;
1216	coroapi.nready = &coro_nready;	1669	coroapi.nready = &coro_nready;
1217	coroapi.current = coro_current;	1670	coroapi.current = coro_current;
1218		1671
1219	GCoroAPI = &coroapi;	1672	GCoroAPI = &coroapi;
1220	sv_setiv (sv, (IV)&coroapi);	1673	sv_setiv (sv, (IV)&coroapi);
1221	SvREADONLY_on (sv);	1674	SvREADONLY_on (sv);
1222	}	1675	}
1223	}	1676	}
		1677
		1678	void
		1679	_set_current (SV *current)
		1680	PROTOTYPE: $
		1681	CODE:
		1682	SvREFCNT_dec (SvRV (coro_current));
		1683	SvRV_set (coro_current, SvREFCNT_inc (SvRV (current)));
1224		1684
1225	int	1685	int
1226	prio (Coro::State coro, int newprio = 0)	1686	prio (Coro::State coro, int newprio = 0)
1227	ALIAS:	1687	ALIAS:
1228	nice = 1	1688	nice = 1
…		…
1231	RETVAL = coro->prio;	1691	RETVAL = coro->prio;
1232		1692
1233	if (items > 1)	1693	if (items > 1)
1234	{	1694	{
1235	if (ix)	1695	if (ix)
1236	newprio += coro->prio;	1696	newprio = coro->prio - newprio;
1237		1697
1238	if (newprio < PRIO_MIN) newprio = PRIO_MIN;	1698	if (newprio < PRIO_MIN) newprio = PRIO_MIN;
1239	if (newprio > PRIO_MAX) newprio = PRIO_MAX;	1699	if (newprio > PRIO_MAX) newprio = PRIO_MAX;
1240		1700
1241	coro->prio = newprio;	1701	coro->prio = newprio;
1242	}	1702	}
1243	}	1703	}
		1704	OUTPUT:
		1705	RETVAL
1244		1706
1245	void	1707	SV *
1246	ready (SV *self)	1708	ready (SV *self)
1247	PROTOTYPE: $	1709	PROTOTYPE: $
1248	CODE:	1710	CODE:
1249	api_ready (self);	1711	RETVAL = boolSV (api_ready (self));
		1712	OUTPUT:
		1713	RETVAL
1250		1714
1251	int	1715	int
1252	nready (...)	1716	nready (...)
1253	PROTOTYPE:	1717	PROTOTYPE:
1254	CODE:	1718	CODE:
1255	RETVAL = coro_nready;	1719	RETVAL = coro_nready;
1256	OUTPUT:	1720	OUTPUT:
1257	RETVAL	1721	RETVAL
1258		1722
		1723	# for async_pool speedup
		1724	void
		1725	_pool_1 (SV *cb)
		1726	CODE:
		1727	{
		1728	int i, len;
		1729	HV hv = (HV )SvRV (coro_current);
		1730	AV *defav = GvAV (PL_defgv);
		1731	SV *invoke = hv_delete (hv, "_invoke", sizeof ("_invoke") - 1, 0);
		1732	AV *invoke_av;
		1733
		1734	if (!invoke)
		1735	croak ("\3terminate\2\n");
		1736
		1737	hv_store (hv, "desc", sizeof ("desc") - 1,
		1738	newSVpvn ("[async_pool]", sizeof ("[async_pool]") - 1), 0);
		1739
		1740	invoke_av = (AV *)SvRV (invoke);
		1741	len = av_len (invoke_av);
		1742
		1743	sv_setsv (cb, AvARRAY (invoke_av)[0]);
		1744
		1745	if (len > 0)
		1746	{
		1747	av_fill (defav, len - 1);
		1748	for (i = 0; i < len; ++i)
		1749	av_store (defav, i, SvREFCNT_inc (AvARRAY (invoke_av)[i + 1]));
		1750	}
		1751
		1752	SvREFCNT_dec (invoke);
		1753	}
		1754
		1755	void
		1756	_pool_2 (SV *cb)
		1757	CODE:
		1758	{
		1759	struct coro *coro = SvSTATE (coro_current);
		1760
		1761	sv_setsv (cb, &PL_sv_undef);
		1762
		1763	if (coro_rss (aTHX_ coro) > SvIV (sv_pool_rss)
		1764	\|\| av_len (av_async_pool) + 1 >= SvIV (sv_pool_size))
		1765	croak ("\3terminate\2\n");
		1766
		1767	av_clear (GvAV (PL_defgv));
		1768	hv_store ((HV *)SvRV (coro_current), "desc", sizeof ("desc") - 1,
		1769	newSVpvn ("[async_pool idle]", sizeof ("[async_pool idle]") - 1), 0);
		1770	coro->save = CORO_SAVE_DEF;
		1771	coro->prio = 0;
		1772	av_push (av_async_pool, newSVsv (coro_current));
		1773	}
		1774
		1775
1259	MODULE = Coro::State PACKAGE = Coro::AIO	1776	MODULE = Coro::State PACKAGE = Coro::AIO
1260		1777
1261	SV *	1778	SV *
1262	_get_state ()	1779	_get_state ()
1263	CODE:	1780	CODE:
1264	{	1781	{
1265	struct {	1782	struct io_state *data;
1266	int errorno;
1267	int laststype;
1268	int laststatval;
1269	Stat_t statcache;
1270	} data;
1271		1783
		1784	RETVAL = newSV (sizeof (struct io_state));
		1785	data = (struct io_state *)SvPVX (RETVAL);
		1786	SvCUR_set (RETVAL, sizeof (struct io_state));
		1787	SvPOK_only (RETVAL);
		1788
1272	data.errorno = errno;	1789	data->errorno = errno;
1273	data.laststype = PL_laststype;	1790	data->laststype = PL_laststype;
1274	data.laststatval = PL_laststatval;	1791	data->laststatval = PL_laststatval;
1275	data.statcache = PL_statcache;	1792	data->statcache = PL_statcache;
1276
1277	RETVAL = newSVpvn ((char *)&data, sizeof data);
1278	}	1793	}
1279	OUTPUT:	1794	OUTPUT:
1280	RETVAL	1795	RETVAL
1281		1796
1282	void	1797	void
1283	_set_state (char *data_)	1798	_set_state (char *data_)
1284	PROTOTYPE: $	1799	PROTOTYPE: $
1285	CODE:	1800	CODE:
1286	{	1801	{
1287	struct {	1802	struct io_state data = (void )data_;
1288	int errorno;
1289	int laststype;
1290	int laststatval;
1291	Stat_t statcache;
1292	} data = (void )data_;
1293		1803
1294	errno = data->errorno;	1804	errno = data->errorno;
1295	PL_laststype = data->laststype;	1805	PL_laststype = data->laststype;
1296	PL_laststatval = data->laststatval;	1806	PL_laststatval = data->laststatval;
1297	PL_statcache = data->statcache;	1807	PL_statcache = data->statcache;
1298	}	1808	}
		1809

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Comparing Coro/Coro/State.xs (file contents): Revision 1.107 by root, Mon Nov 27 02:15:51 2006 UTC vs. Revision 1.172 by root, Sun Sep 30 13:15:01 2007 UTC

Diff Legend

Comparing Coro/Coro/State.xs (file contents):
Revision 1.107 by root, Mon Nov 27 02:15:51 2006 UTC vs.
Revision 1.172 by root, Sun Sep 30 13:15:01 2007 UTC