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

Comparing Coro/Coro/State.xs (file contents):
Revision 1.97 by root, Sun Nov 26 21:21:14 2006 UTC vs.
Revision 1.176 by root, Sun Sep 30 13:50:38 2007 UTC

…		…
		1	#include "libcoro/coro.c"
		2
1	#define PERL_NO_GET_CONTEXT	3	#define PERL_NO_GET_CONTEXT
2
3	#include "libcoro/coro.c"
4		4
5	#include "EXTERN.h"	5	#include "EXTERN.h"
6	#include "perl.h"	6	#include "perl.h"
7	#include "XSUB.h"	7	#include "XSUB.h"
8		8
9	#include "patchlevel.h"	9	#include "patchlevel.h"
10		10
11	#if PERL_VERSION < 6	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
		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)
12	# ifndef PL_ppaddr	55	# ifndef PL_ppaddr
13	# define PL_ppaddr ppaddr	56	# define PL_ppaddr ppaddr
14	# endif	57	# endif
15	# ifndef call_sv	58	# ifndef call_sv
16	# define call_sv perl_call_sv	59	# define call_sv perl_call_sv
27	# ifndef IS_PADCONST	70	# ifndef IS_PADCONST
28	# define IS_PADCONST(v) 0	71	# define IS_PADCONST(v) 0
29	# endif	72	# endif
30	#endif	73	#endif
31		74
32	#include <stdio.h>	75	/* 5.8.7 */
33	#include <errno.h>	76	#ifndef SvRV_set
		77	# define SvRV_set(s,v) SvRV(s) = (v)
		78	#endif
34		79
35	#if !__i386 && !__x86_64 && !__powerpc && !__m68k && !__alpha && !__mips && !__sparc64	80	#if !__i386 && !__x86_64 && !__powerpc && !__m68k && !__alpha && !__mips && !__sparc64
36	# undef STACKGUARD	81	# undef CORO_STACKGUARD
37	#endif
38
39	#ifndef STACKGUARD
40	# define STACKGUARD 0
41	#endif
42
43	#ifdef HAVE_MMAP
44	# include <unistd.h>
45	# include <sys/mman.h>
46	# ifndef MAP_ANONYMOUS
47	# ifdef MAP_ANON
48	# define MAP_ANONYMOUS MAP_ANON
49	# else
50	# undef HAVE_MMAP
51	# endif
52	# endif	82	#endif
53	# include <limits.h>	83
54	# ifndef PAGESIZE	84	#ifndef CORO_STACKGUARD
55	# define PAGESIZE pagesize	85	# define CORO_STACKGUARD 0
56	# define BOOT_PAGESIZE pagesize = sysconf (_SC_PAGESIZE)
57	static long pagesize;
58	# else
59	# define BOOT_PAGESIZE
60	# endif	86	#endif
61	#endif
62		87
63	/* The next macro should declare a variable stacklevel that contains and approximation	88	/* prefer perl internal functions over our own? */
64	* to the current C stack pointer. Its property is that it changes with each call	89	#ifndef CORO_PREFER_PERL_FUNCTIONS
65	* 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. */
66	#define dSTACKLEVEL int stacklevel	95	#define dSTACKLEVEL volatile char stacklevel
67	#define STACKLEVEL ((void *)&stacklevel)	96	#define STACKLEVEL ((void *)&stacklevel)
68		97
69	#define IN_DESTRUCT (PL_main_cv == Nullcv)	98	#define IN_DESTRUCT (PL_main_cv == Nullcv)
70		99
		100	#if __GNUC__ >= 3
		101	# define attribute(x) __attribute__(x)
		102	# define BARRIER __asm__ __volatile__ ("" : : : "memory")
		103	#else
		104	# define attribute(x)
		105	# define BARRIER
		106	#endif
		107
		108	#define NOINLINE attribute ((noinline))
		109
71	#include "CoroAPI.h"	110	#include "CoroAPI.h"
72
73	#define TRANSFER_SET_STACKLEVEL 0x8bfbfbfb /* magic cookie */
74		111
75	#ifdef USE_ITHREADS	112	#ifdef USE_ITHREADS
76	static perl_mutex coro_mutex;	113	static perl_mutex coro_mutex;
77	# define LOCK do { MUTEX_LOCK (&coro_mutex); } while (0)	114	# define LOCK do { MUTEX_LOCK (&coro_mutex); } while (0)
78	# define UNLOCK do { MUTEX_UNLOCK (&coro_mutex); } while (0)	115	# define UNLOCK do { MUTEX_UNLOCK (&coro_mutex); } while (0)
79	#else	116	#else
80	# define LOCK (void)0	117	# define LOCK (void)0
81	# define UNLOCK (void)0	118	# define UNLOCK (void)0
82	#endif	119	#endif
83		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;
84	static struct CoroAPI coroapi;	131	static struct CoroAPI coroapi;
85	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;
86	static HV coro_state_stash, coro_stash;	134	static HV coro_state_stash, coro_stash;
87	static SV coro_mortal; / will be freed after next transfer */	135	static SV coro_mortal; / will be freed after next transfer */
88		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
89	/* this is a structure representing a c-level coroutine */	154	/* this is a structure representing a c-level coroutine */
90	typedef struct coro_stack {	155	typedef struct coro_cctx {
91	struct coro_stack *next;	156	struct coro_cctx *next;
92		157
93	/* the stack */	158	/* the stack */
94	void *sptr;	159	void *sptr;
95	long ssize; /* positive == mmap, otherwise malloc */	160	size_t ssize;
96		161
97	/* cpu state */	162	/* cpu state */
98	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 */
99	JMPENV *top_env;	165	JMPENV *top_env;
100	coro_context cctx;	166	coro_context cctx;
101	} 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	};
102		180
103	/* this is a structure representing a perl-level coroutine */	181	/* this is a structure representing a perl-level coroutine */
104	struct coro {	182	struct coro {
105	/* the c coroutine allocated to this perl coroutine, if any */	183	/* the c coroutine allocated to this perl coroutine, if any */
106	coro_stack *stack;	184	coro_cctx *cctx;
107		185
108	/* data associated with this coroutine (initial args) */	186	/* data associated with this coroutine (initial args) */
109	AV *args;	187	AV *args;
110	int refcnt;	188	int refcnt;
		189	int save; /* CORO_SAVE flags */
		190	int flags; /* CF_ flags */
111		191
112	/* optionally saved, might be zero */	192	/* optionally saved, might be zero */
113	AV *defav;	193	AV defav; / @_ */
114	SV *defsv;	194	SV defsv; / $_ */
115	SV *errsv;	195	SV errsv; / $@ */
		196	GV deffh; / default filehandle */
		197	SV irssv; / $/ */
		198	SV irssv_sv; / real $/ cache */
116		199
117	/* saved global state not related to stacks */	200	#define VAR(name,type) type name;
118	U8 dowarn;	201	# include "state.h"
119	I32 in_eval;	202	#undef VAR
120		203
121	/* the stacks and related info (callchain etc..) */	204	/* statistics */
122	PERL_SI *curstackinfo;	205	int usecount; /* number of switches to this coro */
123	AV *curstack;
124	AV *mainstack;
125	SV **stack_sp;
126	OP *op;
127	SV **curpad;
128	AV *comppad;
129	CV *compcv;
130	SV **stack_base;
131	SV **stack_max;
132	SV **tmps_stack;
133	I32 tmps_floor;
134	I32 tmps_ix;
135	I32 tmps_max;
136	I32 *markstack;
137	I32 *markstack_ptr;
138	I32 *markstack_max;
139	I32 *scopestack;
140	I32 scopestack_ix;
141	I32 scopestack_max;
142	ANY *savestack;
143	I32 savestack_ix;
144	I32 savestack_max;
145	OP **retstack;
146	I32 retstack_ix;
147	I32 retstack_max;
148	PMOP *curpm;
149	COP *curcop;
150		206
151	/* coro process data */	207	/* coro process data */
152	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 */
153	};	213	};
154		214
155	typedef struct coro *Coro__State;	215	typedef struct coro *Coro__State;
156	typedef struct coro *Coro__State_or_hashref;	216	typedef struct coro *Coro__State_or_hashref;
157		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
158	static AV *	235	static AV *
159	coro_clone_padlist (pTHX_ CV *cv)	236	coro_clone_padlist (pTHX_ CV *cv)
160	{	237	{
161	AV *padlist = CvPADLIST (cv);	238	AV *padlist = CvPADLIST (cv);
162	AV newpadlist, newpad;	239	AV newpadlist, newpad;
163		240
164	newpadlist = newAV ();	241	newpadlist = newAV ();
165	AvREAL_off (newpadlist);	242	AvREAL_off (newpadlist);
166	#if PERL_VERSION < 9	243	#if PERL_VERSION_ATLEAST (5,9,0)
		244	Perl_pad_push (aTHX_ padlist, AvFILLp (padlist) + 1);
		245	#else
167	Perl_pad_push (aTHX_ padlist, AvFILLp (padlist) + 1, 1);	246	Perl_pad_push (aTHX_ padlist, AvFILLp (padlist) + 1, 1);
168	#else
169	Perl_pad_push (aTHX_ padlist, AvFILLp (padlist) + 1);
170	#endif	247	#endif
171	newpad = (AV *)AvARRAY (padlist)[AvFILLp (padlist)];	248	newpad = (AV *)AvARRAY (padlist)[AvFILLp (padlist)];
172	--AvFILLp (padlist);	249	--AvFILLp (padlist);
173		250
174	av_store (newpadlist, 0, SvREFCNT_inc (*av_fetch (padlist, 0, FALSE)));	251	av_store (newpadlist, 0, SvREFCNT_inc (*av_fetch (padlist, 0, FALSE)));
…		…
218		295
219	#define PERL_MAGIC_coro PERL_MAGIC_ext	296	#define PERL_MAGIC_coro PERL_MAGIC_ext
220		297
221	static MGVTBL vtbl_coro = {0, 0, 0, 0, coro_cv_free};	298	static MGVTBL vtbl_coro = {0, 0, 0, 0, coro_cv_free};
222		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))
		332
223	/* the next two functions merely cache the padlists */	333	/* the next two functions merely cache the padlists */
224	static void	334	static void
225	get_padlist (pTHX_ CV *cv)	335	get_padlist (pTHX_ CV *cv)
226	{	336	{
227	MAGIC mg = mg_find ((SV )cv, PERL_MAGIC_coro);	337	MAGIC *mg = CORO_MAGIC (cv);
		338	AV *av;
228		339
229	if (mg && AvFILLp ((AV *)mg->mg_obj) >= 0)	340	if (mg && AvFILLp ((av = (AV *)mg->mg_obj)) >= 0)
230	CvPADLIST (cv) = (AV )av_pop ((AV )mg->mg_obj);	341	CvPADLIST (cv) = (AV *)AvARRAY (av)[AvFILLp (av)--];
231	else	342	else
232	{	343	{
233	#if 0	344	#if CORO_PREFER_PERL_FUNCTIONS
234	/* this is probably cleaner, but also slower? */	345	/* this is probably cleaner, but also slower? */
235	CV *cp = Perl_cv_clone (aTHX_ cv);	346	CV *cp = Perl_cv_clone (cv);
236	CvPADLIST (cv) = CvPADLIST (cp);	347	CvPADLIST (cv) = CvPADLIST (cp);
237	CvPADLIST (cp) = 0;	348	CvPADLIST (cp) = 0;
238	SvREFCNT_dec (cp);	349	SvREFCNT_dec (cp);
239	#else	350	#else
240	CvPADLIST (cv) = coro_clone_padlist (aTHX_ cv);	351	CvPADLIST (cv) = coro_clone_padlist (aTHX_ cv);
…		…
243	}	354	}
244		355
245	static void	356	static void
246	put_padlist (pTHX_ CV *cv)	357	put_padlist (pTHX_ CV *cv)
247	{	358	{
248	MAGIC mg = mg_find ((SV )cv, PERL_MAGIC_coro);	359	MAGIC *mg = CORO_MAGIC (cv);
		360	AV *av;
249		361
250	if (!mg)	362	if (!mg)
251	{	363	{
252	sv_magic ((SV *)cv, 0, PERL_MAGIC_coro, 0, 0);	364	sv_magic ((SV *)cv, 0, PERL_MAGIC_coro, 0, 0);
253	mg = mg_find ((SV *)cv, PERL_MAGIC_coro);	365	mg = mg_find ((SV *)cv, PERL_MAGIC_coro);
254	mg->mg_virtual = &vtbl_coro;	366	mg->mg_virtual = &vtbl_coro;
255	mg->mg_obj = (SV *)newAV ();	367	mg->mg_obj = (SV *)newAV ();
256	}	368	}
257		369
258	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);
259	}	376	}
		377
		378	/ load & save, init *****************************************************/
260		379
261	#define SB do {	380	#define SB do {
262	#define SE } while (0)	381	#define SE } while (0)
263		382
264	#define LOAD(state) load_state(aTHX_ (state));
265	#define SAVE(state,flags) save_state(aTHX_ (state),(flags));
266
267	#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
268		384
269	static void	385	static void
270	load_state(pTHX_ Coro__State c)	386	load_perl (pTHX_ Coro__State c)
271	{	387	{
272	PL_dowarn = c->dowarn;	388	#define VAR(name,type) PL_ ## name = c->name;
273	PL_in_eval = c->in_eval;	389	# include "state.h"
274		390	#undef VAR
275	PL_curstackinfo = c->curstackinfo;
276	PL_curstack = c->curstack;
277	PL_mainstack = c->mainstack;
278	PL_stack_sp = c->stack_sp;
279	PL_op = c->op;
280	PL_curpad = c->curpad;
281	PL_comppad = c->comppad;
282	PL_compcv = c->compcv;
283	PL_stack_base = c->stack_base;
284	PL_stack_max = c->stack_max;
285	PL_tmps_stack = c->tmps_stack;
286	PL_tmps_floor = c->tmps_floor;
287	PL_tmps_ix = c->tmps_ix;
288	PL_tmps_max = c->tmps_max;
289	PL_markstack = c->markstack;
290	PL_markstack_ptr = c->markstack_ptr;
291	PL_markstack_max = c->markstack_max;
292	PL_scopestack = c->scopestack;
293	PL_scopestack_ix = c->scopestack_ix;
294	PL_scopestack_max = c->scopestack_max;
295	PL_savestack = c->savestack;
296	PL_savestack_ix = c->savestack_ix;
297	PL_savestack_max = c->savestack_max;
298	#if PERL_VERSION < 9
299	PL_retstack = c->retstack;
300	PL_retstack_ix = c->retstack_ix;
301	PL_retstack_max = c->retstack_max;
302	#endif
303	PL_curpm = c->curpm;
304	PL_curcop = c->curcop;
305		391
306	if (c->defav) REPLACE_SV (GvAV (PL_defgv), c->defav);	392	if (c->defav) REPLACE_SV (GvAV (PL_defgv), c->defav);
307	if (c->defsv) REPLACE_SV (DEFSV , c->defsv);	393	if (c->defsv) REPLACE_SV (DEFSV , c->defsv);
308	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	}
309		411
310	{	412	{
311	dSP;	413	dSP;
312	CV *cv;	414	CV *cv;
313		415
314	/* now do the ugly restore mess */	416	/* now do the ugly restore mess */
315	while ((cv = (CV *)POPs))	417	while ((cv = (CV *)POPs))
316	{	418	{
317	AV padlist = (AV )POPs;
318
319	if (padlist)
320	{
321	put_padlist (aTHX_ cv); /* mark this padlist as available */	419	put_padlist (aTHX_ cv); /* mark this padlist as available */
322	CvPADLIST(cv) = padlist;	420	CvDEPTH (cv) = PTR2IV (POPs);
323	}	421	CvPADLIST (cv) = (AV *)POPs;
324
325	++CvDEPTH(cv);
326	}	422	}
327		423
328	PUTBACK;	424	PUTBACK;
329	}	425	}
330	}	426	}
331		427
332	static void	428	static void
333	save_state(pTHX_ Coro__State c, int flags)	429	save_perl (pTHX_ Coro__State c)
334	{	430	{
335	{	431	{
336	dSP;	432	dSP;
337	I32 cxix = cxstack_ix;	433	I32 cxix = cxstack_ix;
338	PERL_CONTEXT *ccstk = cxstack;	434	PERL_CONTEXT *ccstk = cxstack;
…		…
341	/*	437	/*
342	* 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
343	* (and reinitialize) all cv's in the whole callchain :(	439	* (and reinitialize) all cv's in the whole callchain :(
344	*/	440	*/
345		441
346	PUSHs (Nullsv);	442	XPUSHs (Nullsv);
347	/* this loop was inspired by pp_caller */	443	/* this loop was inspired by pp_caller */
348	for (;;)	444	for (;;)
349	{	445	{
350	while (cxix >= 0)	446	while (cxix >= 0)
351	{	447	{
352	PERL_CONTEXT *cx = &ccstk[cxix--];	448	PERL_CONTEXT *cx = &ccstk[cxix--];
353		449
354	if (CxTYPE(cx) == CXt_SUB)	450	if (CxTYPE (cx) == CXt_SUB \|\| CxTYPE (cx) == CXt_FORMAT)
355	{	451	{
356	CV *cv = cx->blk_sub.cv;	452	CV *cv = cx->blk_sub.cv;
		453
357	if (CvDEPTH(cv))	454	if (CvDEPTH (cv))
358	{	455	{
359	EXTEND (SP, CvDEPTH(cv)*2);	456	EXTEND (SP, 3);
360
361	while (--CvDEPTH(cv))
362	{
363	/* this tells the restore code to increment CvDEPTH */
364	PUSHs (Nullsv);
365	PUSHs ((SV *)cv);
366	}
367
368	PUSHs ((SV *)CvPADLIST(cv));	457	PUSHs ((SV *)CvPADLIST (cv));
		458	PUSHs (INT2PTR (SV *, CvDEPTH (cv)));
369	PUSHs ((SV *)cv);	459	PUSHs ((SV *)cv);
370		460
		461	CvDEPTH (cv) = 0;
371	get_padlist (aTHX_ cv);	462	get_padlist (aTHX_ cv);
372	}	463	}
373	}	464	}
374	#ifdef CXt_FORMAT
375	else if (CxTYPE(cx) == CXt_FORMAT)
376	{
377	/* I never used formats, so how should I know how these are implemented? */
378	/* my bold guess is as a simple, plain sub... */
379	croak ("CXt_FORMAT not yet handled. Don't switch coroutines from within formats");
380	}
381	#endif
382	}	465	}
383		466
384	if (top_si->si_type == PERLSI_MAIN)	467	if (top_si->si_type == PERLSI_MAIN)
385	break;	468	break;
386		469
387	top_si = top_si->si_prev;	470	top_si = top_si->si_prev;
388	ccstk = top_si->si_cxstack;	471	ccstk = top_si->si_cxstack;
389	cxix = top_si->si_cxix;	472	cxix = top_si->si_cxix;
390	}	473	}
391		474
392	PUTBACK;	475	PUTBACK;
393	}	476	}
394		477
395	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;
396	c->defsv = flags & TRANSFER_SAVE_DEFSV ? SvREFCNT_inc (DEFSV) : 0;	479	c->defsv = c->save & CORO_SAVE_DEFSV ? SvREFCNT_inc (DEFSV) : 0;
397	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;
398		483
399	c->dowarn = PL_dowarn;	484	#define VAR(name,type)c->name = PL_ ## name;
400	c->in_eval = PL_in_eval;	485	# include "state.h"
401		486	#undef VAR
402	c->curstackinfo = PL_curstackinfo;
403	c->curstack = PL_curstack;
404	c->mainstack = PL_mainstack;
405	c->stack_sp = PL_stack_sp;
406	c->op = PL_op;
407	c->curpad = PL_curpad;
408	c->comppad = PL_comppad;
409	c->compcv = PL_compcv;
410	c->stack_base = PL_stack_base;
411	c->stack_max = PL_stack_max;
412	c->tmps_stack = PL_tmps_stack;
413	c->tmps_floor = PL_tmps_floor;
414	c->tmps_ix = PL_tmps_ix;
415	c->tmps_max = PL_tmps_max;
416	c->markstack = PL_markstack;
417	c->markstack_ptr = PL_markstack_ptr;
418	c->markstack_max = PL_markstack_max;
419	c->scopestack = PL_scopestack;
420	c->scopestack_ix = PL_scopestack_ix;
421	c->scopestack_max = PL_scopestack_max;
422	c->savestack = PL_savestack;
423	c->savestack_ix = PL_savestack_ix;
424	c->savestack_max = PL_savestack_max;
425	#if PERL_VERSION < 9
426	c->retstack = PL_retstack;
427	c->retstack_ix = PL_retstack_ix;
428	c->retstack_max = PL_retstack_max;
429	#endif
430	c->curpm = PL_curpm;
431	c->curcop = PL_curcop;
432	}	487	}
433		488
434	/*	489	/*
435	* allocate various perl stacks. This is an exact copy	490	* allocate various perl stacks. This is an exact copy
436	* of perl.c:init_stacks, except that it uses less memory	491	* of perl.c:init_stacks, except that it uses less memory
437	* on the (sometimes correct) assumption that coroutines do	492	* on the (sometimes correct) assumption that coroutines do
438	* not usually need a lot of stackspace.	493	* not usually need a lot of stackspace.
439	*/	494	*/
		495	#if CORO_PREFER_PERL_FUNCTIONS
		496	# define coro_init_stacks init_stacks
		497	#else
440	static void	498	static void
441	coro_init_stacks (pTHX)	499	coro_init_stacks (pTHX)
442	{	500	{
443	LOCK;	501	PL_curstackinfo = new_stackinfo(64, 6);
444
445	PL_curstackinfo = new_stackinfo(96, 1024/sizeof(PERL_CONTEXT) - 1);
446	PL_curstackinfo->si_type = PERLSI_MAIN;	502	PL_curstackinfo->si_type = PERLSI_MAIN;
447	PL_curstack = PL_curstackinfo->si_stack;	503	PL_curstack = PL_curstackinfo->si_stack;
448	PL_mainstack = PL_curstack; /* remember in case we switch stacks */	504	PL_mainstack = PL_curstack; /* remember in case we switch stacks */
449		505
450	PL_stack_base = AvARRAY(PL_curstack);	506	PL_stack_base = AvARRAY(PL_curstack);
451	PL_stack_sp = PL_stack_base;	507	PL_stack_sp = PL_stack_base;
452	PL_stack_max = PL_stack_base + AvMAX(PL_curstack);	508	PL_stack_max = PL_stack_base + AvMAX(PL_curstack);
453		509
454	New(50,PL_tmps_stack,96,SV*);	510	New(50,PL_tmps_stack,64,SV*);
455	PL_tmps_floor = -1;	511	PL_tmps_floor = -1;
456	PL_tmps_ix = -1;	512	PL_tmps_ix = -1;
457	PL_tmps_max = 96;	513	PL_tmps_max = 64;
458		514
459	New(54,PL_markstack,16,I32);	515	New(54,PL_markstack,16,I32);
460	PL_markstack_ptr = PL_markstack;	516	PL_markstack_ptr = PL_markstack;
461	PL_markstack_max = PL_markstack + 16;	517	PL_markstack_max = PL_markstack + 16;
462		518
…		…
466		522
467	New(54,PL_scopestack,16,I32);	523	New(54,PL_scopestack,16,I32);
468	PL_scopestack_ix = 0;	524	PL_scopestack_ix = 0;
469	PL_scopestack_max = 16;	525	PL_scopestack_max = 16;
470		526
471	New(54,PL_savestack,96,ANY);	527	New(54,PL_savestack,64,ANY);
472	PL_savestack_ix = 0;	528	PL_savestack_ix = 0;
473	PL_savestack_max = 96;	529	PL_savestack_max = 64;
474		530
475	#if PERL_VERSION < 9	531	#if !PERL_VERSION_ATLEAST (5,9,0)
476	New(54,PL_retstack,8,OP*);	532	New(54,PL_retstack,4,OP*);
477	PL_retstack_ix = 0;	533	PL_retstack_ix = 0;
478	PL_retstack_max = 8;	534	PL_retstack_max = 4;
479	#endif	535	#endif
480
481	UNLOCK;
482	}	536	}
		537	#endif
483		538
484	/*	539	/*
485	* destroy the stacks, the callchain etc...	540	* destroy the stacks, the callchain etc...
486	*/	541	*/
487	static void	542	static void
488	destroy_stacks(pTHX)	543	coro_destroy_stacks (pTHX)
489	{	544	{
490	if (!IN_DESTRUCT)	545	if (!IN_DESTRUCT)
491	{	546	{
492	/* is this ugly, I ask? */	547	/* restore all saved variables and stuff */
493	LEAVE_SCOPE (0);	548	LEAVE_SCOPE (0);
		549	assert (PL_tmps_floor == -1);
494		550
495	/* sure it is, but more important: is it correct?? :/ */	551	/* free all temporaries */
496	FREETMPS;	552	FREETMPS;
		553	assert (PL_tmps_ix == -1);
497		554
		555	/* unwind all extra stacks */
498	/POPSTACK_TO (PL_mainstack);//D//use/	556	POPSTACK_TO (PL_mainstack);
		557
		558	/* unwind main stack */
		559	dounwind (-1);
499	}	560	}
500		561
501	while (PL_curstackinfo->si_next)	562	while (PL_curstackinfo->si_next)
502	PL_curstackinfo = PL_curstackinfo->si_next;	563	PL_curstackinfo = PL_curstackinfo->si_next;
503		564
504	while (PL_curstackinfo)	565	while (PL_curstackinfo)
505	{	566	{
506	PERL_SI *p = PL_curstackinfo->si_prev;	567	PERL_SI *p = PL_curstackinfo->si_prev;
507		568
508	{ /D//remove/
509	dSP;
510	SWITCHSTACK (PL_curstack, PL_curstackinfo->si_stack);
511	PUTBACK; /* possibly superfluous */
512	}
513
514	if (!IN_DESTRUCT)	569	if (!IN_DESTRUCT)
515	{
516	dounwind (-1);/D//remove/
517	SvREFCNT_dec (PL_curstackinfo->si_stack);	570	SvREFCNT_dec (PL_curstackinfo->si_stack);
518	}
519		571
520	Safefree (PL_curstackinfo->si_cxstack);	572	Safefree (PL_curstackinfo->si_cxstack);
521	Safefree (PL_curstackinfo);	573	Safefree (PL_curstackinfo);
522	PL_curstackinfo = p;	574	PL_curstackinfo = p;
523	}	575	}
524		576
525	Safefree (PL_tmps_stack);	577	Safefree (PL_tmps_stack);
526	Safefree (PL_markstack);	578	Safefree (PL_markstack);
527	Safefree (PL_scopestack);	579	Safefree (PL_scopestack);
528	Safefree (PL_savestack);	580	Safefree (PL_savestack);
529	#if PERL_VERSION < 9	581	#if !PERL_VERSION_ATLEAST (5,9,0)
530	Safefree (PL_retstack);	582	Safefree (PL_retstack);
531	#endif	583	#endif
532	}	584	}
533		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
534	static void	619	static void
535	setup_coro (struct coro *coro)	620	setup_coro (pTHX_ struct coro *coro)
536	{	621	{
537	/*	622	/*
538	* emulate part of the perl startup here.	623	* emulate part of the perl startup here.
539	*/	624	*/
540	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	{
541	dSP;	797	dSP;
542	UNOP myop;	798	LOGOP myop;
543	SV sub_init = (SV )get_cv ("Coro::State::coro_init", FALSE);
544		799
545	coro_init_stacks (aTHX);	800	PL_top_env = &PL_start_env;
546	/PL_curcop = 0;/
547	/PL_in_eval = PL_in_eval;/ /* inherit */
548	SvREFCNT_dec (GvAV (PL_defgv));
549	GvAV (PL_defgv) = coro->args; coro->args = 0;
550		801
551	SPAGAIN;	802	if (cctx->flags & CC_TRACE)
		803	PL_runops = runops_trace;
552		804
553	Zero (&myop, 1, UNOP);	805	Zero (&myop, 1, LOGOP);
554	myop.op_next = Nullop;	806	myop.op_next = PL_op;
555	myop.op_flags = OPf_WANT_VOID;	807	myop.op_flags = OPf_WANT_VOID \| OPf_STACKED;
556		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;
557	PL_op = (OP *)&myop;	814	PL_op = (OP *)&myop;
558
559	PUSHMARK(SP);
560	XPUSHs (sub_init);
561	PUTBACK;
562	PL_op = PL_ppaddr[OP_ENTERSUB](aTHX);	815	PL_op = PL_ppaddr[OP_ENTERSUB](aTHX);
563	SPAGAIN;	816	SPAGAIN;
564
565	ENTER; /* necessary e.g. for dounwind */
566	}	817	}
567		818
568	static void	819	/*
569	free_coro_mortal ()	820	* this is a _very_ stripped down perl interpreter ;)
570	{	821	*/
571	if (coro_mortal)
572	{
573	dTHX;
574
575	SvREFCNT_dec (coro_mortal);
576	coro_mortal = 0;
577	}
578	}
579
580	static void	822	static void
581	coro_run (void *arg)	823	coro_run (void *arg)
582	{	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
583	/*	840	/*
584	* 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
585	*/	846	*/
586	dTHX;
587	int ret;
588
589	UNLOCK;
590
591	PL_top_env = &PL_start_env;	847	PL_top_env = main_top_env;
592		848	JMPENV_JUMP (2); /* I do not feel well about the hardcoded 2 at all */
593	sv_setiv (get_sv ("Coro::State::cctx_stack", FALSE), PTR2IV ((coro_stack *)arg));
594	sv_setiv (get_sv ("Coro::State::cctx_restartop", FALSE), PTR2IV (PL_op));
595
596	/* continue at cctx_init, without entersub */
597	PL_restartop = CvSTART (get_cv ("Coro::State::cctx_init", FALSE));
598
599	/* somebody will hit me for both perl_run and PL_restartop */
600	ret = perl_run (aTHX_ PERL_GET_CONTEXT);
601	printf ("ret %d\n", ret);//D
602
603	fputs ("FATAL: C coroutine fell over the edge of the world, aborting.\n", stderr);
604	abort ();
605	}	849	}
606		850
607	static coro_stack *	851	static coro_cctx *
608	stack_new ()	852	cctx_new ()
609	{	853	{
610	coro_stack *stack;	854	coro_cctx *cctx;
		855	void *stack_start;
		856	size_t stack_size;
611		857
		858	++cctx_count;
		859
612	New (0, stack, 1, coro_stack);	860	Newz (0, cctx, 1, coro_cctx);
613		861
614	#if HAVE_MMAP	862	#if HAVE_MMAP
615		863
616	stack->ssize = ((STACKSIZE * sizeof (long) + PAGESIZE - 1) / PAGESIZE + STACKGUARD) * PAGESIZE;	864	cctx->ssize = ((coro_stacksize * sizeof (long) + PAGESIZE - 1) / PAGESIZE + CORO_STACKGUARD) * PAGESIZE;
617	/* mmap suppsedly does allocate-on-write for us */	865	/* mmap supposedly does allocate-on-write for us */
618	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);
619		867
620	if (stack->sptr == (void *)-1)	868	if (cctx->sptr != (void *)-1)
621	{
622	perror ("FATAL: unable to mmap stack for coroutine");
623	_exit (EXIT_FAILURE);
624	}	869	{
625
626	# if STACKGUARD	870	# if CORO_STACKGUARD
627	mprotect (stack->sptr, STACKGUARD * PAGESIZE, PROT_NONE);	871	mprotect (cctx->sptr, CORO_STACKGUARD * PAGESIZE, PROT_NONE);
628	# endif	872	# endif
629		873	stack_start = CORO_STACKGUARD * PAGESIZE + (char *)cctx->sptr;
630	#else	874	stack_size = cctx->ssize - CORO_STACKGUARD * PAGESIZE;
631		875	cctx->flags \|= CC_MAPPED;
632	stack->ssize = STACKSIZE * (long)sizeof (long);
633	New (0, stack->sptr, STACKSIZE, long);
634
635	if (!stack->sptr)
636	{	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	{
637	perror (stderr, "FATAL: unable to malloc stack for coroutine");	885	perror ("FATAL: unable to allocate stack for coroutine");
638	_exit (EXIT_FAILURE);	886	_exit (EXIT_FAILURE);
639	}	887	}
640		888
641	#endif	889	stack_start = cctx->sptr;
		890	stack_size = cctx->ssize;
		891	}
642		892
		893	REGISTER_STACK (cctx, (char )stack_start, (char )stack_start + stack_size);
643	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);
644		895
645	return stack;	896	return cctx;
646	}	897	}
647		898
648	static void	899	static void
649	stack_free (coro_stack *stack)	900	cctx_destroy (coro_cctx *cctx)
650	{	901	{
651	if (!stack)	902	if (!cctx)
652	return;	903	return;
653		904
		905	--cctx_count;
		906
		907	#if CORO_USE_VALGRIND
		908	VALGRIND_STACK_DEREGISTER (cctx->valgrind_id);
		909	#endif
		910
654	#if HAVE_MMAP	911	#if HAVE_MMAP
		912	if (cctx->flags & CC_MAPPED)
655	munmap (stack->sptr, stack->ssize);	913	munmap (cctx->sptr, cctx->ssize);
656	#else
657	Safefree (stack->sptr);
658	#endif
659
660	Safefree (stack);
661	}
662
663	static coro_stack *stack_first;
664
665	static coro_stack *
666	stack_get ()
667	{
668	coro_stack *stack;
669
670	if (stack_first)
671	{
672	stack = stack_first;
673	stack_first = stack->next;
674	}
675	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)
676	{	925	{
677	stack = stack_new ();	926	coro_cctx *cctx = cctx_first;
678	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);
679	}	934	}
680		935
681	return stack;	936	return cctx_new ();
682	}	937	}
683		938
684	static void	939	static void
685	stack_put (coro_stack *stack)	940	cctx_put (coro_cctx *cctx)
686	{	941	{
687	stack->next = stack_first;	942	/* free another cctx if overlimit */
688	stack_first = stack;	943	if (cctx_idle >= MAX_IDLE_CCTX)
689	}	944	{
		945	coro_cctx *first = cctx_first;
		946	cctx_first = first->next;
		947	--cctx_idle;
690		948
691	/* never call directly, always through the coro_state_transfer global variable */	949	cctx_destroy (first);
692	static void	950	}
		951
		952	++cctx_idle;
		953	cctx->next = cctx_first;
		954	cctx_first = cctx;
		955	}
		956
		957	/ coroutine switching ***************************************************/
		958
		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
693	transfer_impl (pTHX_ struct coro prev, struct coro next, int flags)	980	transfer (pTHX_ struct coro prev, struct coro next)
694	{	981	{
695	dSTACKLEVEL;	982	dSTACKLEVEL;
696		983
697	/* sometimes transfer is only called to set idle_sp */	984	/* sometimes transfer is only called to set idle_sp */
698	if (flags == TRANSFER_SET_STACKLEVEL)	985	if (!next)
		986	{
699	((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	}
700	else if (prev != next)	990	else if (prev != next)
701	{	991	{
702	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;
703		1004
704	LOCK;	1005	LOCK;
705		1006
706	if (next->mainstack)	1007	if (next->flags & CF_NEW)
707	{	1008	{
708	/* coroutine already started */	1009	/* need to start coroutine */
709	SAVE (prev, flags);	1010	next->flags &= ~CF_NEW;
710	LOAD (next);	1011	/* first get rid of the old state */
		1012	save_perl (aTHX_ prev);
		1013	/* setup coroutine call */
		1014	setup_coro (aTHX_ next);
711	}	1015	}
712	else	1016	else
713	{	1017	{
714	/* need to start coroutine */	1018	/* coroutine already started */
715	/* first get rid of the old state */	1019	save_perl (aTHX_ prev);
716	SAVE (prev, -1);	1020	load_perl (aTHX_ next);
717	/* setup coroutine call */
718	setup_coro (next);
719	/* need a stack */
720	next->stack = 0;
721	}	1021	}
722		1022
723	if (!prev->stack)
724	/* create a new empty context */
725	Newz (0, prev->stack, 1, coro_stack);
726
727	prev__stack = prev->stack;	1023	prev__cctx = prev->cctx;
728		1024
729	/* possibly "free" the stack */	1025	/* possibly "free" the cctx */
730	if (prev__stack->idle_sp == STACKLEVEL)	1026	if (prev__cctx->idle_sp == STACKLEVEL && !(prev__cctx->flags & CC_TRACE))
731	{	1027	{
732	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
733	prev->stack = 0;	1031	prev->cctx = 0;
		1032
		1033	cctx_put (prev__cctx);
734	}	1034	}
735		1035
		1036	++next->usecount;
		1037
736	if (!next->stack)	1038	if (!next->cctx)
737	next->stack = stack_get ();	1039	next->cctx = cctx_get (aTHX);
738		1040
739	if (prev__stack != next->stack)	1041	if (prev__cctx != next->cctx)
740	{	1042	{
741	prev__stack->top_env = PL_top_env;	1043	prev__cctx->top_env = PL_top_env;
742	PL_top_env = next->stack->top_env;	1044	PL_top_env = next->cctx->top_env;
743	coro_transfer (&prev__stack->cctx, &next->stack->cctx);	1045	coro_transfer (&prev__cctx->cctx, &next->cctx->cctx);
744	}	1046	}
745		1047
746	free_coro_mortal ();	1048	free_coro_mortal (aTHX);
747
748	UNLOCK;	1049	UNLOCK;
749	}	1050	}
750	}	1051	}
751		1052
752	/* use this function pointer to call the above function */
753	/* this is done to increase chances of the compiler not inlining the call */
754	/* not static to make it even harder for the compiler (and theoretically impossible in most cases */
755	void (coro_state_transfer)(pTHX_ struct coro prev, struct coro *next, int flags) = transfer_impl;
756
757	struct transfer_args	1053	struct transfer_args
758	{	1054	{
759	struct coro prev, next;	1055	struct coro prev, next;
760	int flags;
761	};	1056	};
762		1057
763	#define TRANSFER(ta) coro_state_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)
764		1060
		1061	/ high level stuff ******************************************************/
		1062
765	static void	1063	static int
766	coro_state_destroy (struct coro *coro)	1064	coro_state_destroy (pTHX_ struct coro *coro)
767	{	1065	{
768	if (coro->refcnt--)	1066	if (coro->flags & CF_DESTROYED)
769	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 */
770		1081
771	if (coro->mainstack && coro->mainstack != main_mainstack)	1082	if (coro->mainstack && coro->mainstack != main_mainstack)
772	{	1083	{
773	struct coro temp;	1084	struct coro temp;
774		1085
775	SAVE (aTHX_ (&temp), TRANSFER_SAVE_ALL);	1086	assert (!(coro->flags & CF_RUNNING));
		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);
776	LOAD (aTHX_ coro);	1095	load_perl (aTHX_ coro);
777		1096
778	destroy_stacks (aTHX);	1097	coro_destroy_stacks (aTHX);
779		1098
780	LOAD ((&temp)); /* this will get rid of defsv etc.. */	1099	load_perl (aTHX_ &temp); /* this will get rid of defsv etc.. */
781		1100
782	coro->mainstack = 0;	1101	coro->mainstack = 0;
783	}	1102	}
784		1103
785	stack_free (coro->stack);	1104	cctx_destroy (coro->cctx);
786	SvREFCNT_dec (coro->args);	1105	SvREFCNT_dec (coro->args);
787	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;
788	}	1112	}
789		1113
790	static int	1114	static int
791	coro_state_clear (SV sv, MAGIC mg)	1115	coro_state_free (pTHX_ SV sv, MAGIC mg)
792	{	1116	{
793	struct coro coro = (struct coro )mg->mg_ptr;	1117	struct coro coro = (struct coro )mg->mg_ptr;
794	mg->mg_ptr = 0;	1118	mg->mg_ptr = 0;
795		1119
		1120	coro->hv = 0;
		1121
		1122	if (--coro->refcnt < 0)
		1123	{
796	coro_state_destroy (coro);	1124	coro_state_destroy (aTHX_ coro);
		1125	Safefree (coro);
		1126	}
797		1127
798	return 0;	1128	return 0;
799	}	1129	}
800		1130
801	static int	1131	static int
802	coro_state_dup (MAGIC mg, CLONE_PARAMS params)	1132	coro_state_dup (pTHX_ MAGIC mg, CLONE_PARAMS params)
803	{	1133	{
804	struct coro coro = (struct coro )mg->mg_ptr;	1134	struct coro coro = (struct coro )mg->mg_ptr;
805		1135
806	++coro->refcnt;	1136	++coro->refcnt;
807		1137
808	return 0;	1138	return 0;
809	}	1139	}
810		1140
811	static MGVTBL coro_state_vtbl = { 0, 0, 0, 0, coro_state_clear, 0, coro_state_dup, 0 };	1141	static MGVTBL coro_state_vtbl = {
812		1142	0, 0, 0, 0,
813	static struct coro *	1143	coro_state_free,
814	SvSTATE (SV *coro)	1144	0,
815	{	1145	#ifdef MGf_DUP
816	HV *stash;	1146	coro_state_dup,
817	MAGIC *mg;	1147	#else
818		1148	# define MGf_DUP 0
819	if (SvROK (coro))	1149	#endif
820	coro = SvRV (coro);	1150	};
821
822	stash = SvSTASH (coro);
823	if (stash != coro_stash && stash != coro_state_stash)
824	{
825	/* very slow, but rare, check */
826	if (!sv_derived_from (sv_2mortal (newRV_inc (coro)), "Coro::State"))
827	croak ("Coro::State object required");
828	}
829
830	mg = SvMAGIC (coro);
831	assert (mg->mg_type == PERL_MAGIC_ext);
832	return (struct coro *)mg->mg_ptr;
833	}
834		1151
835	static void	1152	static void
836	prepare_transfer (pTHX_ struct transfer_args ta, SV prev, SV *next, int flags)	1153	prepare_transfer (pTHX_ struct transfer_args ta, SV prev_sv, SV *next_sv)
837	{	1154	{
838	ta->prev = SvSTATE (prev);	1155	ta->prev = SvSTATE (prev_sv);
839	ta->next = SvSTATE (next);	1156	ta->next = SvSTATE (next_sv);
840	ta->flags = flags;	1157	TRANSFER_CHECK (*ta);
841	}	1158	}
842		1159
843	static void	1160	static void
844	api_transfer (SV prev, SV next, int flags)	1161	api_transfer (SV prev_sv, SV next_sv)
845	{	1162	{
846	dTHX;	1163	dTHX;
847	struct transfer_args ta;	1164	struct transfer_args ta;
848		1165
849	prepare_transfer (aTHX_ &ta, prev, next, flags);	1166	prepare_transfer (aTHX_ &ta, prev_sv, next_sv);
850	TRANSFER (ta);	1167	TRANSFER (ta);
851	}	1168	}
852		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
853	/ Coro ******************************************************************/	1183	/ Coro ******************************************************************/
854		1184
855	#define PRIO_MAX 3
856	#define PRIO_HIGH 1
857	#define PRIO_NORMAL 0
858	#define PRIO_LOW -1
859	#define PRIO_IDLE -3
860	#define PRIO_MIN -4
861
862	/* for Coro.pm */
863	static GV coro_current, coro_idle;
864	static AV *coro_ready [PRIO_MAX-PRIO_MIN+1];
865	static int coro_nready;
866
867	static void	1185	static void
868	coro_enq (pTHX_ SV *sv)	1186	coro_enq (pTHX_ SV *coro_sv)
869	{	1187	{
870	int prio;
871
872	if (SvTYPE (sv) != SVt_PVHV)
873	croak ("Coro::ready tried to enqueue something that is not a coroutine");
874
875	prio = SvSTATE (sv)->prio;
876
877	av_push (coro_ready [prio - PRIO_MIN], sv);	1188	av_push (coro_ready [SvSTATE (coro_sv)->prio - PRIO_MIN], coro_sv);
878	coro_nready++;
879	}	1189	}
880		1190
881	static SV *	1191	static SV *
882	coro_deq (pTHX_ int min_prio)	1192	coro_deq (pTHX_ int min_prio)
883	{	1193	{
…		…
887	if (min_prio < 0)	1197	if (min_prio < 0)
888	min_prio = 0;	1198	min_prio = 0;
889		1199
890	for (prio = PRIO_MAX - PRIO_MIN + 1; --prio >= min_prio; )	1200	for (prio = PRIO_MAX - PRIO_MIN + 1; --prio >= min_prio; )
891	if (AvFILLp (coro_ready [prio]) >= 0)	1201	if (AvFILLp (coro_ready [prio]) >= 0)
892	{
893	coro_nready--;
894	return av_shift (coro_ready [prio]);	1202	return av_shift (coro_ready [prio]);
895	}
896		1203
897	return 0;	1204	return 0;
898	}	1205	}
899		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
900	static void	1238	static void
901	api_ready (SV *coro)	1239	prepare_schedule (pTHX_ struct transfer_args *ta)
902	{	1240	{
903	dTHX;	1241	SV prev_sv, next_sv;
904		1242
905	if (SvROK (coro))	1243	for (;;)
906	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);
907		1289
908	LOCK;	1290	LOCK;
909	coro_enq (aTHX_ SvREFCNT_inc (coro));	1291	free_coro_mortal (aTHX);
		1292	coro_mortal = prev_sv;
910	UNLOCK;	1293	UNLOCK;
911	}	1294	}
912		1295
913	static void	1296	static void
914	prepare_schedule (aTHX_ struct transfer_args *ta)
915	{
916	SV current, prev, *next;
917
918	LOCK;
919
920	current = GvSV (coro_current);
921
922	for (;;)
923	{
924	LOCK;
925
926	next = coro_deq (aTHX_ PRIO_MIN);
927
928	if (next)
929	break;
930
931	UNLOCK;
932
933	{
934	dSP;
935
936	ENTER;
937	SAVETMPS;
938
939	PUSHMARK (SP);
940	PUTBACK;
941	call_sv (GvSV (coro_idle), G_DISCARD);
942
943	FREETMPS;
944	LEAVE;
945	}
946	}
947
948	prev = SvRV (current);
949	SvRV (current) = next;
950
951	/* free this only after the transfer */
952	free_coro_mortal ();
953	coro_mortal = prev;
954
955	ta->prev = SvSTATE (prev);
956	ta->next = SvSTATE (next);
957	ta->flags = TRANSFER_SAVE_ALL;
958
959	UNLOCK;
960	}
961
962	static void
963	prepare_cede (aTHX_ struct transfer_args *ta)	1297	prepare_cede (pTHX_ struct transfer_args *ta)
964	{	1298	{
965	LOCK;	1299	api_ready (coro_current);
966	coro_enq (aTHX_ SvREFCNT_inc (SvRV (GvSV (coro_current))));
967	UNLOCK;
968
969	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;
970	}	1315	}
971		1316
972	static void	1317	static void
973	api_schedule (void)	1318	api_schedule (void)
974	{	1319	{
975	dTHX;	1320	dTHX;
976	struct transfer_args ta;	1321	struct transfer_args ta;
977		1322
978	prepare_schedule (&ta);	1323	prepare_schedule (aTHX_ &ta);
979	TRANSFER (ta);	1324	TRANSFER (ta);
980	}	1325	}
981		1326
982	static void	1327	static int
983	api_cede (void)	1328	api_cede (void)
984	{	1329	{
985	dTHX;	1330	dTHX;
986	struct transfer_args ta;	1331	struct transfer_args ta;
987		1332
988	prepare_cede (&ta);	1333	prepare_cede (aTHX_ &ta);
		1334
		1335	if (ta.prev != ta.next)
		1336	{
989	TRANSFER (ta);	1337	TRANSFER (ta);
		1338	return 1;
		1339	}
		1340	else
		1341	return 0;
990	}	1342	}
991		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
992	MODULE = Coro::State PACKAGE = Coro::State	1385	MODULE = Coro::State PACKAGE = Coro::State PREFIX = api_
993		1386
994	PROTOTYPES: DISABLE	1387	PROTOTYPES: DISABLE
995		1388
996	BOOT:	1389	BOOT:
997	{	1390	{
…		…
1000	#endif	1393	#endif
1001	BOOT_PAGESIZE;	1394	BOOT_PAGESIZE;
1002		1395
1003	coro_state_stash = gv_stashpv ("Coro::State", TRUE);	1396	coro_state_stash = gv_stashpv ("Coro::State", TRUE);
1004		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
1005	newCONSTSUB (coro_state_stash, "SAVE_DEFAV", newSViv (TRANSFER_SAVE_DEFAV));	1403	newCONSTSUB (coro_state_stash, "SAVE_DEFAV", newSViv (CORO_SAVE_DEFAV));
1006	newCONSTSUB (coro_state_stash, "SAVE_DEFSV", newSViv (TRANSFER_SAVE_DEFSV));	1404	newCONSTSUB (coro_state_stash, "SAVE_DEFSV", newSViv (CORO_SAVE_DEFSV));
1007	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));
1008		1410
1009	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;
1010		1416
1011	coroapi.ver = CORO_API_VERSION;	1417	coroapi.ver = CORO_API_VERSION;
1012	coroapi.transfer = api_transfer;	1418	coroapi.transfer = api_transfer;
1013		1419
1014	assert (("PRIO_NORMAL must be 0", !PRIO_NORMAL));	1420	assert (("PRIO_NORMAL must be 0", !PRIO_NORMAL));
…		…
1022	HV *hv;	1428	HV *hv;
1023	int i;	1429	int i;
1024		1430
1025	Newz (0, coro, 1, struct coro);	1431	Newz (0, coro, 1, struct coro);
1026	coro->args = newAV ();	1432	coro->args = newAV ();
		1433	coro->save = CORO_SAVE_DEF;
		1434	coro->flags = CF_NEW;
1027		1435
		1436	if (coro_first) coro_first->prev = coro;
		1437	coro->next = coro_first;
		1438	coro_first = coro;
		1439
1028	hv = newHV ();	1440	coro->hv = hv = newHV ();
1029	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;
1030	RETVAL = sv_bless (newRV_noinc ((SV *)hv), gv_stashpv (klass, 1));	1442	RETVAL = sv_bless (newRV_noinc ((SV *)hv), gv_stashpv (klass, 1));
1031		1443
1032	for (i = 1; i < items; i++)	1444	for (i = 1; i < items; i++)
1033	av_push (coro->args, newSVsv (ST (i)));	1445	av_push (coro->args, newSVsv (ST (i)));
1034
1035	/coro->mainstack = 0; //actual work is done inside transfer /
1036	/coro->stack = 0;/
1037	}	1446	}
1038	OUTPUT:	1447	OUTPUT:
1039	RETVAL	1448	RETVAL
1040		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:
		1466	RETVAL
		1467
		1468	# these not obviously related functions are all rolled into the same xs
		1469	# function to increase chances that they all will call transfer with the same
		1470	# stack offset
1041	void	1471	void
1042	_set_stacklevel (...)	1472	_set_stacklevel (...)
1043	ALIAS:	1473	ALIAS:
1044	Coro::State::transfer = 1	1474	Coro::State::transfer = 1
1045	Coro::schedule = 2	1475	Coro::schedule = 2
1046	Coro::cede = 3	1476	Coro::cede = 3
1047	Coro::Cont::yield = 4	1477	Coro::cede_notself = 4
1048	CODE:	1478	CODE:
1049	{	1479	{
1050	struct transfer_args ta;	1480	struct transfer_args ta;
1051		1481
1052	switch (ix)	1482	switch (ix)
1053	{	1483	{
1054	case 0:	1484	case 0:
1055	ta.prev = (struct coro )INT2PTR (coro_stack , SvIV (ST (0)));	1485	ta.prev = (struct coro )INT2PTR (coro_cctx , SvIV (ST (0)));
1056	ta.next = 0;	1486	ta.next = 0;
1057	ta.flags = TRANSFER_SET_STACKLEVEL;
1058	break;	1487	break;
1059		1488
1060	case 1:	1489	case 1:
1061	if (items != 3)	1490	if (items != 2)
1062	croak ("Coro::State::transfer(prev,next,flags) expects three arguments, not %d", items);	1491	croak ("Coro::State::transfer (prev,next) expects two arguments, not %d", items);
1063		1492
1064	prepare_transfer (&ta, ST (0), ST (1), SvIV (ST (2)));	1493	prepare_transfer (aTHX_ &ta, ST (0), ST (1));
1065	break;	1494	break;
1066		1495
1067	case 2:	1496	case 2:
1068	prepare_schedule (&ta);	1497	prepare_schedule (aTHX_ &ta);
1069	break;	1498	break;
1070		1499
1071	case 3:	1500	case 3:
1072	prepare_cede (&ta);	1501	prepare_cede (aTHX_ &ta);
1073	break;	1502	break;
1074		1503
1075	case 4:	1504	case 4:
1076	{	1505	if (!prepare_cede_notself (aTHX_ &ta))
1077	SV *yieldstack;	1506	XSRETURN_EMPTY;
1078	SV *sv;
1079	AV *defav = GvAV (PL_defgv);
1080		1507
1081	yieldstack = *hv_fetch (
1082	(HV *)SvRV (GvSV (coro_current)),
1083	"yieldstack", sizeof ("yieldstack") - 1,
1084	0
1085	);
1086
1087	/* set up @_ -- ugly */
1088	av_clear (defav);
1089	av_fill (defav, items - 1);
1090	while (items--)
1091	av_store (defav, items, SvREFCNT_inc (ST(items)));
1092
1093	sv = av_pop ((AV *)SvRV (yieldstack));
1094	ta.prev = SvSTATE (av_fetch ((AV )SvRV (sv), 0, 0));
1095	ta.next = SvSTATE (av_fetch ((AV )SvRV (sv), 1, 0));
1096	ta.flags = 0;
1097	SvREFCNT_dec (sv);
1098	}
1099	break;	1508	break;
1100
1101	}	1509	}
1102		1510
		1511	BARRIER;
1103	TRANSFER (ta);	1512	TRANSFER (ta);
1104	}
1105		1513
1106	void	1514	if (GIMME_V != G_VOID && ta.next != ta.prev)
1107	_clone_state_from (SV dst, SV src)	1515	XSRETURN_YES;
		1516	}
		1517
		1518	bool
		1519	_destroy (SV *coro_sv)
1108	CODE:	1520	CODE:
1109	{	1521	RETVAL = coro_state_destroy (aTHX_ SvSTATE (coro_sv));
1110	struct coro *coro_src = SvSTATE (src);	1522	OUTPUT:
1111		1523	RETVAL
1112	sv_unmagic (SvRV (dst), PERL_MAGIC_ext);
1113
1114	++coro_src->refcnt;
1115	sv_magicext (SvRV (dst), 0, PERL_MAGIC_ext, &coro_state_vtbl, (char *)coro_src, 0)->mg_flags \|= MGf_DUP;
1116	}
1117
1118	void
1119	_nonlocal_goto (IV nextop)
1120	CODE:
1121	/* uuh, somebody will kill me again for this */
1122	PL_op->op_next = INT2PTR (OP *, nextop);
1123		1524
1124	void	1525	void
1125	_exit (code)	1526	_exit (code)
1126	int code	1527	int code
1127	PROTOTYPE: $	1528	PROTOTYPE: $
1128	CODE:	1529	CODE:
1129	_exit (code);	1530	_exit (code);
1130		1531
		1532	int
		1533	cctx_stacksize (int new_stacksize = 0)
		1534	CODE:
		1535	RETVAL = coro_stacksize;
		1536	if (new_stacksize)
		1537	coro_stacksize = new_stacksize;
		1538	OUTPUT:
		1539	RETVAL
		1540
		1541	int
		1542	cctx_count ()
		1543	CODE:
		1544	RETVAL = cctx_count;
		1545	OUTPUT:
		1546	RETVAL
		1547
		1548	int
		1549	cctx_idle ()
		1550	CODE:
		1551	RETVAL = cctx_idle;
		1552	OUTPUT:
		1553	RETVAL
		1554
		1555	void
		1556	list ()
		1557	PPCODE:
		1558	{
		1559	struct coro *coro;
		1560	for (coro = coro_first; coro; coro = coro->next)
		1561	if (coro->hv)
		1562	XPUSHs (sv_2mortal (newRV_inc ((SV *)coro->hv)));
		1563	}
		1564
		1565	void
		1566	call (Coro::State coro, SV *coderef)
		1567	ALIAS:
		1568	eval = 1
		1569	CODE:
		1570	{
		1571	if (coro->mainstack)
		1572	{
		1573	struct coro temp;
		1574	Zero (&temp, 1, struct coro);
		1575	temp.save = CORO_SAVE_ALL;
		1576
		1577	if (!(coro->flags & CF_RUNNING))
		1578	{
		1579	save_perl (aTHX_ &temp);
		1580	load_perl (aTHX_ coro);
		1581	}
		1582
		1583	{
		1584	dSP;
		1585	ENTER;
		1586	SAVETMPS;
		1587	PUSHMARK (SP);
		1588	PUTBACK;
		1589	if (ix)
		1590	eval_sv (coderef, 0);
		1591	else
		1592	call_sv (coderef, G_KEEPERR \| G_EVAL \| G_VOID \| G_DISCARD);
		1593	SPAGAIN;
		1594	FREETMPS;
		1595	LEAVE;
		1596	PUTBACK;
		1597	}
		1598
		1599	if (!(coro->flags & CF_RUNNING))
		1600	{
		1601	save_perl (aTHX_ coro);
		1602	load_perl (aTHX_ &temp);
		1603	}
		1604	}
		1605	}
		1606
		1607	SV *
		1608	is_ready (Coro::State coro)
		1609	PROTOTYPE: $
		1610	ALIAS:
		1611	is_ready = CF_READY
		1612	is_running = CF_RUNNING
		1613	is_new = CF_NEW
		1614	is_destroyed = CF_DESTROYED
		1615	CODE:
		1616	RETVAL = boolSV (coro->flags & ix);
		1617	OUTPUT:
		1618	RETVAL
		1619
		1620	void
		1621	api_trace (SV *coro, int flags = CC_TRACE \| CC_TRACE_SUB)
		1622
		1623	SV *
		1624	has_stack (Coro::State coro)
		1625	PROTOTYPE: $
		1626	CODE:
		1627	RETVAL = boolSV (!!coro->cctx);
		1628	OUTPUT:
		1629	RETVAL
		1630
		1631	int
		1632	is_traced (Coro::State coro)
		1633	PROTOTYPE: $
		1634	CODE:
		1635	RETVAL = (coro->cctx ? coro->cctx->flags : 0) & CC_TRACE_ALL;
		1636	OUTPUT:
		1637	RETVAL
		1638
		1639	IV
		1640	rss (Coro::State coro)
		1641	PROTOTYPE: $
		1642	ALIAS:
		1643	usecount = 1
		1644	CODE:
		1645	switch (ix)
		1646	{
		1647	case 0: RETVAL = coro_rss (aTHX_ coro); break;
		1648	case 1: RETVAL = coro->usecount; break;
		1649	}
		1650	OUTPUT:
		1651	RETVAL
		1652
		1653
1131	MODULE = Coro::State PACKAGE = Coro	1654	MODULE = Coro::State PACKAGE = Coro
1132		1655
1133	BOOT:	1656	BOOT:
1134	{	1657	{
1135	int i;	1658	int i;
		1659
		1660	sv_pool_rss = get_sv ("Coro::POOL_RSS" , TRUE);
		1661	sv_pool_size = get_sv ("Coro::POOL_SIZE" , TRUE);
		1662	av_async_pool = get_av ("Coro::async_pool", TRUE);
		1663
		1664	coro_current = get_sv ("Coro::current", FALSE);
		1665	SvREADONLY_on (coro_current);
1136		1666
1137	coro_stash = gv_stashpv ("Coro", TRUE);	1667	coro_stash = gv_stashpv ("Coro", TRUE);
1138		1668
1139	newCONSTSUB (coro_stash, "PRIO_MAX", newSViv (PRIO_MAX));	1669	newCONSTSUB (coro_stash, "PRIO_MAX", newSViv (PRIO_MAX));
1140	newCONSTSUB (coro_stash, "PRIO_HIGH", newSViv (PRIO_HIGH));	1670	newCONSTSUB (coro_stash, "PRIO_HIGH", newSViv (PRIO_HIGH));
1141	newCONSTSUB (coro_stash, "PRIO_NORMAL", newSViv (PRIO_NORMAL));	1671	newCONSTSUB (coro_stash, "PRIO_NORMAL", newSViv (PRIO_NORMAL));
1142	newCONSTSUB (coro_stash, "PRIO_LOW", newSViv (PRIO_LOW));	1672	newCONSTSUB (coro_stash, "PRIO_LOW", newSViv (PRIO_LOW));
1143	newCONSTSUB (coro_stash, "PRIO_IDLE", newSViv (PRIO_IDLE));	1673	newCONSTSUB (coro_stash, "PRIO_IDLE", newSViv (PRIO_IDLE));
1144	newCONSTSUB (coro_stash, "PRIO_MIN", newSViv (PRIO_MIN));	1674	newCONSTSUB (coro_stash, "PRIO_MIN", newSViv (PRIO_MIN));
1145		1675
1146	coro_current = gv_fetchpv ("Coro::current", TRUE, SVt_PV);
1147	coro_idle = gv_fetchpv ("Coro::idle" , TRUE, SVt_PV);
1148
1149	for (i = PRIO_MAX - PRIO_MIN + 1; i--; )	1676	for (i = PRIO_MAX - PRIO_MIN + 1; i--; )
1150	coro_ready[i] = newAV ();	1677	coro_ready[i] = newAV ();
1151		1678
1152	{	1679	{
1153	SV *sv = perl_get_sv("Coro::API", 1);	1680	SV *sv = perl_get_sv("Coro::API", 1);
1154		1681
1155	coroapi.schedule = api_schedule;	1682	coroapi.schedule = api_schedule;
		1683	coroapi.save = api_save;
1156	coroapi.cede = api_cede;	1684	coroapi.cede = api_cede;
		1685	coroapi.cede_notself = api_cede_notself;
1157	coroapi.ready = api_ready;	1686	coroapi.ready = api_ready;
		1687	coroapi.is_ready = api_is_ready;
1158	coroapi.nready = &coro_nready;	1688	coroapi.nready = &coro_nready;
1159	coroapi.current = coro_current;	1689	coroapi.current = coro_current;
1160		1690
1161	GCoroAPI = &coroapi;	1691	GCoroAPI = &coroapi;
1162	sv_setiv (sv, (IV)&coroapi);	1692	sv_setiv (sv, (IV)&coroapi);
1163	SvREADONLY_on (sv);	1693	SvREADONLY_on (sv);
1164	}	1694	}
1165	}	1695	}
		1696
		1697	void
		1698	_set_current (SV *current)
		1699	PROTOTYPE: $
		1700	CODE:
		1701	SvREFCNT_dec (SvRV (coro_current));
		1702	SvRV_set (coro_current, SvREFCNT_inc (SvRV (current)));
1166		1703
1167	int	1704	int
1168	prio (Coro::State coro, int newprio = 0)	1705	prio (Coro::State coro, int newprio = 0)
1169	ALIAS:	1706	ALIAS:
1170	nice = 1	1707	nice = 1
…		…
1173	RETVAL = coro->prio;	1710	RETVAL = coro->prio;
1174		1711
1175	if (items > 1)	1712	if (items > 1)
1176	{	1713	{
1177	if (ix)	1714	if (ix)
1178	newprio += coro->prio;	1715	newprio = coro->prio - newprio;
1179		1716
1180	if (newprio < PRIO_MIN) newprio = PRIO_MIN;	1717	if (newprio < PRIO_MIN) newprio = PRIO_MIN;
1181	if (newprio > PRIO_MAX) newprio = PRIO_MAX;	1718	if (newprio > PRIO_MAX) newprio = PRIO_MAX;
1182		1719
1183	coro->prio = newprio;	1720	coro->prio = newprio;
1184	}	1721	}
1185	}	1722	}
		1723	OUTPUT:
		1724	RETVAL
1186		1725
1187	void	1726	SV *
1188	ready (SV *self)	1727	ready (SV *self)
1189	PROTOTYPE: $	1728	PROTOTYPE: $
1190	CODE:	1729	CODE:
1191	api_ready (self);	1730	RETVAL = boolSV (api_ready (self));
		1731	OUTPUT:
		1732	RETVAL
1192		1733
1193	int	1734	int
1194	nready (...)	1735	nready (...)
1195	PROTOTYPE:	1736	PROTOTYPE:
1196	CODE:	1737	CODE:
1197	RETVAL = coro_nready;	1738	RETVAL = coro_nready;
1198	OUTPUT:	1739	OUTPUT:
1199	RETVAL	1740	RETVAL
1200		1741
		1742	# for async_pool speedup
		1743	void
		1744	_pool_1 (SV *cb)
		1745	CODE:
		1746	{
		1747	int i, len;
		1748	HV hv = (HV )SvRV (coro_current);
		1749	AV *defav = GvAV (PL_defgv);
		1750	SV *invoke = hv_delete (hv, "_invoke", sizeof ("_invoke") - 1, 0);
		1751	AV *invoke_av;
		1752
		1753	if (!invoke)
		1754	croak ("\3terminate\2\n");
		1755
		1756	hv_store (hv, "desc", sizeof ("desc") - 1,
		1757	newSVpvn ("[async_pool]", sizeof ("[async_pool]") - 1), 0);
		1758
		1759	invoke_av = (AV *)SvRV (invoke);
		1760	len = av_len (invoke_av);
		1761
		1762	sv_setsv (cb, AvARRAY (invoke_av)[0]);
		1763
		1764	if (len > 0)
		1765	{
		1766	av_fill (defav, len - 1);
		1767	for (i = 0; i < len; ++i)
		1768	av_store (defav, i, SvREFCNT_inc (AvARRAY (invoke_av)[i + 1]));
		1769	}
		1770
		1771	SvREFCNT_dec (invoke);
		1772	}
		1773
		1774	void
		1775	_pool_2 (SV *cb)
		1776	CODE:
		1777	{
		1778	struct coro *coro = SvSTATE (coro_current);
		1779
		1780	sv_setsv (cb, &PL_sv_undef);
		1781
		1782	if (coro_rss (aTHX_ coro) > SvIV (sv_pool_rss)
		1783	\|\| av_len (av_async_pool) + 1 >= SvIV (sv_pool_size))
		1784	croak ("\3terminate\2\n");
		1785
		1786	av_clear (GvAV (PL_defgv));
		1787	hv_store ((HV *)SvRV (coro_current), "desc", sizeof ("desc") - 1,
		1788	newSVpvn ("[async_pool idle]", sizeof ("[async_pool idle]") - 1), 0);
		1789
		1790	coro->save = CORO_SAVE_DEF;
		1791	coro->prio = 0;
		1792
		1793	if (coro->cctx && (coro->cctx->flags & CC_TRACE))
		1794	api_trace (coro_current, 0);
		1795
		1796	av_push (av_async_pool, newSVsv (coro_current));
		1797	}
		1798
		1799
1201	MODULE = Coro::State PACKAGE = Coro::AIO	1800	MODULE = Coro::State PACKAGE = Coro::AIO
1202		1801
1203	SV *	1802	SV *
1204	_get_state ()	1803	_get_state ()
1205	CODE:	1804	CODE:
1206	{	1805	{
1207	struct {	1806	struct io_state *data;
1208	int errorno;
1209	int laststype;
1210	int laststatval;
1211	Stat_t statcache;
1212	} data;
1213		1807
		1808	RETVAL = newSV (sizeof (struct io_state));
		1809	data = (struct io_state *)SvPVX (RETVAL);
		1810	SvCUR_set (RETVAL, sizeof (struct io_state));
		1811	SvPOK_only (RETVAL);
		1812
1214	data.errorno = errno;	1813	data->errorno = errno;
1215	data.laststype = PL_laststype;	1814	data->laststype = PL_laststype;
1216	data.laststatval = PL_laststatval;	1815	data->laststatval = PL_laststatval;
1217	data.statcache = PL_statcache;	1816	data->statcache = PL_statcache;
1218
1219	RETVAL = newSVpvn ((char *)&data, sizeof data);
1220	}	1817	}
1221	OUTPUT:	1818	OUTPUT:
1222	RETVAL	1819	RETVAL
1223		1820
1224	void	1821	void
1225	_set_state (char *data_)	1822	_set_state (char *data_)
1226	PROTOTYPE: $	1823	PROTOTYPE: $
1227	CODE:	1824	CODE:
1228	{	1825	{
1229	struct {	1826	struct io_state data = (void )data_;
1230	int errorno;
1231	int laststype;
1232	int laststatval;
1233	Stat_t statcache;
1234	} data = (void )data_;
1235		1827
1236	errno = data->errorno;	1828	errno = data->errorno;
1237	PL_laststype = data->laststype;	1829	PL_laststype = data->laststype;
1238	PL_laststatval = data->laststatval;	1830	PL_laststatval = data->laststatval;
1239	PL_statcache = data->statcache;	1831	PL_statcache = data->statcache;
1240	}	1832	}
		1833

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Comparing Coro/Coro/State.xs (file contents): Revision 1.97 by root, Sun Nov 26 21:21:14 2006 UTC vs. Revision 1.176 by root, Sun Sep 30 13:50:38 2007 UTC

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Comparing Coro/Coro/State.xs (file contents):
Revision 1.97 by root, Sun Nov 26 21:21:14 2006 UTC vs.
Revision 1.176 by root, Sun Sep 30 13:50:38 2007 UTC