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

Comparing Coro/Coro/State.xs (file contents):
Revision 1.106 by root, Mon Nov 27 02:08:55 2006 UTC vs.
Revision 1.238 by root, Sat May 31 12:10:55 2008 UTC

…		…
1	#include "libcoro/coro.c"	1	#include "libcoro/coro.c"
		2
		3	#define PERL_NO_GET_CONTEXT
		4	#define PERL_EXT
2		5
3	#include "EXTERN.h"	6	#include "EXTERN.h"
4	#include "perl.h"	7	#include "perl.h"
5	#include "XSUB.h"	8	#include "XSUB.h"
6		9
7	#include "patchlevel.h"	10	#include "patchlevel.h"
8		11
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>	12	#include <stdio.h>
41	#include <errno.h>	13	#include <errno.h>
		14	#include <assert.h>
42		15
43	#if !__i386 && !__x86_64 && !__powerpc && !__m68k && !__alpha && !__mips && !__sparc64	16	#ifdef WIN32
44	# undef STACKGUARD	17	# undef setjmp
45	#endif	18	# undef longjmp
46		19	# undef _exit
47	#ifndef STACKGUARD	20	# define setjmp _setjmp // deep magic, don't ask
48	# define STACKGUARD 0	21	#else
		22	# include <inttypes.h> /* most portable stdint.h */
49	#endif	23	#endif
50		24
51	#ifdef HAVE_MMAP	25	#ifdef HAVE_MMAP
52	# include <unistd.h>	26	# include <unistd.h>
53	# include <sys/mman.h>	27	# include <sys/mman.h>
69	#else	43	#else
70	# define PAGESIZE 0	44	# define PAGESIZE 0
71	# define BOOT_PAGESIZE (void)0	45	# define BOOT_PAGESIZE (void)0
72	#endif	46	#endif
73		47
74	/* The next macro should declare a variable stacklevel that contains and approximation	48	#if CORO_USE_VALGRIND
75	* to the current C stack pointer. Its property is that it changes with each call	49	# include <valgrind/valgrind.h>
76	* and should be unique. */	50	# define REGISTER_STACK(cctx,start,end) (cctx)->valgrind_id = VALGRIND_STACK_REGISTER ((start), (end))
		51	#else
		52	# define REGISTER_STACK(cctx,start,end)
		53	#endif
		54
		55	/* the maximum number of idle cctx that will be pooled */
		56	#define MAX_IDLE_CCTX 8
		57
		58	#define PERL_VERSION_ATLEAST(a,b,c) \
		59	(PERL_REVISION > (a) \
		60	\|\| (PERL_REVISION == (a) \
		61	&& (PERL_VERSION > (b) \
		62	\|\| (PERL_VERSION == (b) && PERLSUBVERSION >= (c)))))
		63
		64	#if !PERL_VERSION_ATLEAST (5,6,0)
		65	# ifndef PL_ppaddr
		66	# define PL_ppaddr ppaddr
		67	# endif
		68	# ifndef call_sv
		69	# define call_sv perl_call_sv
		70	# endif
		71	# ifndef get_sv
		72	# define get_sv perl_get_sv
		73	# endif
		74	# ifndef get_cv
		75	# define get_cv perl_get_cv
		76	# endif
		77	# ifndef IS_PADGV
		78	# define IS_PADGV(v) 0
		79	# endif
		80	# ifndef IS_PADCONST
		81	# define IS_PADCONST(v) 0
		82	# endif
		83	#endif
		84
		85	/* 5.8.8 */
		86	#ifndef GV_NOTQUAL
		87	# define GV_NOTQUAL 0
		88	#endif
		89	#ifndef newSV
		90	# define newSV(l) NEWSV(0,l)
		91	#endif
		92
		93	/* 5.11 */
		94	#ifndef CxHASARGS
		95	# define CxHASARGS(cx) (cx)->blk_sub.hasargs
		96	#endif
		97
		98	/* 5.8.7 */
		99	#ifndef SvRV_set
		100	# define SvRV_set(s,v) SvRV(s) = (v)
		101	#endif
		102
		103	#if !__i386 && !__x86_64 && !__powerpc && !__m68k && !__alpha && !__mips && !__sparc64
		104	# undef CORO_STACKGUARD
		105	#endif
		106
		107	#ifndef CORO_STACKGUARD
		108	# define CORO_STACKGUARD 0
		109	#endif
		110
		111	/* prefer perl internal functions over our own? */
		112	#ifndef CORO_PREFER_PERL_FUNCTIONS
		113	# define CORO_PREFER_PERL_FUNCTIONS 0
		114	#endif
		115
		116	/* The next macros try to return the current stack pointer, in an as
		117	* portable way as possible. */
77	#define dSTACKLEVEL int stacklevel	118	#define dSTACKLEVEL volatile char stacklevel
78	#define STACKLEVEL ((void *)&stacklevel)	119	#define STACKLEVEL ((void *)&stacklevel)
79		120
80	#define IN_DESTRUCT (PL_main_cv == Nullcv)	121	#define IN_DESTRUCT (PL_main_cv == Nullcv)
81		122
82	#if __GNUC__ >= 3	123	#if __GNUC__ >= 3
83	# define attribute(x) __attribute__(x)	124	# define attribute(x) __attribute__(x)
		125	# define BARRIER __asm__ __volatile__ ("" : : : "memory")
		126	# define expect(expr,value) __builtin_expect ((expr),(value))
84	#else	127	#else
85	# define attribute(x)	128	# define attribute(x)
		129	# define BARRIER
		130	# define expect(expr,value) (expr)
86	#endif	131	#endif
		132
		133	#define expect_false(expr) expect ((expr) != 0, 0)
		134	#define expect_true(expr) expect ((expr) != 0, 1)
87		135
88	#define NOINLINE attribute ((noinline))	136	#define NOINLINE attribute ((noinline))
89		137
90	#include "CoroAPI.h"	138	#include "CoroAPI.h"
91
92	#define TRANSFER_SET_STACKLEVEL 0x8bfbfbfb /* magic cookie */
93		139
94	#ifdef USE_ITHREADS	140	#ifdef USE_ITHREADS
95	static perl_mutex coro_mutex;	141	static perl_mutex coro_mutex;
96	# define LOCK do { MUTEX_LOCK (&coro_mutex); } while (0)	142	# define LOCK do { MUTEX_LOCK (&coro_mutex); } while (0)
97	# define UNLOCK do { MUTEX_UNLOCK (&coro_mutex); } while (0)	143	# define UNLOCK do { MUTEX_UNLOCK (&coro_mutex); } while (0)
98	#else	144	#else
99	# define LOCK (void)0	145	# define LOCK (void)0
100	# define UNLOCK (void)0	146	# define UNLOCK (void)0
101	#endif	147	#endif
102		148
		149	/* helper storage struct for Coro::AIO */
		150	struct io_state
		151	{
		152	int errorno;
		153	I32 laststype;
		154	int laststatval;
		155	Stat_t statcache;
		156	};
		157
		158	static size_t coro_stacksize = CORO_STACKSIZE;
103	static struct CoroAPI coroapi;	159	static struct CoroAPI coroapi;
104	static AV main_mainstack; / used to differentiate between $main and others */	160	static AV main_mainstack; / used to differentiate between $main and others */
		161	static JMPENV *main_top_env;
105	static HV coro_state_stash, coro_stash;	162	static HV coro_state_stash, coro_stash;
106	static SV coro_mortal; / will be freed after next transfer */	163	static volatile SV coro_mortal; / will be freed after next transfer */
		164
		165	static GV irsgv; / $/ */
		166	static GV stdoutgv; / STDOUT /
		167	static SV *rv_diehook;
		168	static SV *rv_warnhook;
		169	static HV hv_sig; / %SIG */
		170
		171	/* async_pool helper stuff */
		172	static SV *sv_pool_rss;
		173	static SV *sv_pool_size;
		174	static AV *av_async_pool;
		175
		176	/* Coro::AnyEvent */
		177	static SV *sv_activity;
		178
		179	static struct coro_cctx *cctx_first;
		180	static int cctx_count, cctx_idle;
		181
		182	enum {
		183	CC_MAPPED = 0x01,
		184	CC_NOREUSE = 0x02, /* throw this away after tracing */
		185	CC_TRACE = 0x04,
		186	CC_TRACE_SUB = 0x08, /* trace sub calls */
		187	CC_TRACE_LINE = 0x10, /* trace each statement */
		188	CC_TRACE_ALL = CC_TRACE_SUB \| CC_TRACE_LINE,
		189	};
107		190
108	/* this is a structure representing a c-level coroutine */	191	/* this is a structure representing a c-level coroutine */
109	typedef struct coro_cctx {	192	typedef struct coro_cctx {
110	struct coro_cctx *next;	193	struct coro_cctx *next;
111		194
112	/* the stack */	195	/* the stack */
113	void *sptr;	196	void *sptr;
114	long ssize; /* positive == mmap, otherwise malloc */	197	size_t ssize;
115		198
116	/* cpu state */	199	/* cpu state */
117	void idle_sp; / sp of top-level transfer/schedule/cede call */	200	void idle_sp; / sp of top-level transfer/schedule/cede call */
		201	JMPENV idle_te; / same as idle_sp, but for top_env, TODO: remove once stable */
118	JMPENV *top_env;	202	JMPENV *top_env;
119	coro_context cctx;	203	coro_context cctx;
120		204
121	#if USE_VALGRIND	205	#if CORO_USE_VALGRIND
122	int valgrind_id;	206	int valgrind_id;
123	#endif	207	#endif
		208	unsigned char flags;
124	} coro_cctx;	209	} coro_cctx;
		210
		211	enum {
		212	CF_RUNNING = 0x0001, /* coroutine is running */
		213	CF_READY = 0x0002, /* coroutine is ready */
		214	CF_NEW = 0x0004, /* has never been switched to */
		215	CF_DESTROYED = 0x0008, /* coroutine data has been freed */
		216	};
		217
		218	/* the structure where most of the perl state is stored, overlaid on the cxstack */
		219	typedef struct {
		220	SV *defsv;
		221	AV *defav;
		222	SV *errsv;
		223	SV *irsgv;
		224	#define VAR(name,type) type name;
		225	# include "state.h"
		226	#undef VAR
		227	} perl_slots;
		228
		229	#define SLOT_COUNT ((sizeof (perl_slots) + sizeof (PERL_CONTEXT) - 1) / sizeof (PERL_CONTEXT))
125		230
126	/* this is a structure representing a perl-level coroutine */	231	/* this is a structure representing a perl-level coroutine */
127	struct coro {	232	struct coro {
128	/* the c coroutine allocated to this perl coroutine, if any */	233	/* the c coroutine allocated to this perl coroutine, if any */
129	coro_cctx *cctx;	234	coro_cctx *cctx;
130		235
131	/* data associated with this coroutine (initial args) */	236	/* process data */
132	AV *args;
133	int refcnt;
134
135	/* optionally saved, might be zero */
136	AV *defav;
137	SV *defsv;
138	SV *errsv;
139
140	/* saved global state not related to stacks */
141	U8 dowarn;
142	I32 in_eval;
143
144	/* the stacks and related info (callchain etc..) */
145	PERL_SI *curstackinfo;
146	AV *curstack;
147	AV *mainstack;	237	AV *mainstack;
148	SV **stack_sp;	238	perl_slots slot; / basically the saved sp */
149	OP *op;	239
150	SV **curpad;	240	AV args; / data associated with this coroutine (initial args) */
151	AV *comppad;	241	int refcnt; /* coroutines are refcounted, yes */
152	CV *compcv;	242	int flags; /* CF_ flags */
153	SV **stack_base;	243	HV hv; / the perl hash associated with this coro, if any */
154	SV **stack_max;	244
155	SV **tmps_stack;	245	/* statistics */
156	I32 tmps_floor;	246	int usecount; /* number of transfers to this coro */
157	I32 tmps_ix;
158	I32 tmps_max;
159	I32 *markstack;
160	I32 *markstack_ptr;
161	I32 *markstack_max;
162	I32 *scopestack;
163	I32 scopestack_ix;
164	I32 scopestack_max;
165	ANY *savestack;
166	I32 savestack_ix;
167	I32 savestack_max;
168	OP **retstack;
169	I32 retstack_ix;
170	I32 retstack_max;
171	PMOP *curpm;
172	COP *curcop;
173		247
174	/* coro process data */	248	/* coro process data */
175	int prio;	249	int prio;
		250	SV throw; / exception to be thrown */
		251
		252	/* async_pool */
		253	SV *saved_deffh;
		254
		255	/* linked list */
		256	struct coro next, prev;
176	};	257	};
177		258
178	typedef struct coro *Coro__State;	259	typedef struct coro *Coro__State;
179	typedef struct coro *Coro__State_or_hashref;	260	typedef struct coro *Coro__State_or_hashref;
180		261
		262	/ Coro ******************************************************************/
		263
		264	#define PRIO_MAX 3
		265	#define PRIO_HIGH 1
		266	#define PRIO_NORMAL 0
		267	#define PRIO_LOW -1
		268	#define PRIO_IDLE -3
		269	#define PRIO_MIN -4
		270
		271	/* for Coro.pm */
		272	static SV *coro_current;
		273	static SV *coro_readyhook;
		274	static AV *coro_ready [PRIO_MAX-PRIO_MIN+1];
		275	static int coro_nready;
		276	static struct coro *coro_first;
		277
		278	/ lowlevel stuff ********************************************************/
		279
		280	static SV *
		281	coro_get_sv (pTHX_ const char *name, int create)
		282	{
		283	#if PERL_VERSION_ATLEAST (5,10,0)
		284	/* silence stupid and wrong 5.10 warning that I am unable to switch off */
		285	get_sv (name, create);
		286	#endif
		287	return get_sv (name, create);
		288	}
		289
181	static AV *	290	static AV *
		291	coro_get_av (pTHX_ const char *name, int create)
		292	{
		293	#if PERL_VERSION_ATLEAST (5,10,0)
		294	/* silence stupid and wrong 5.10 warning that I am unable to switch off */
		295	get_av (name, create);
		296	#endif
		297	return get_av (name, create);
		298	}
		299
		300	static HV *
		301	coro_get_hv (pTHX_ const char *name, int create)
		302	{
		303	#if PERL_VERSION_ATLEAST (5,10,0)
		304	/* silence stupid and wrong 5.10 warning that I am unable to switch off */
		305	get_hv (name, create);
		306	#endif
		307	return get_hv (name, create);
		308	}
		309
		310	static AV *
182	coro_clone_padlist (CV *cv)	311	coro_clone_padlist (pTHX_ CV *cv)
183	{	312	{
184	AV *padlist = CvPADLIST (cv);	313	AV *padlist = CvPADLIST (cv);
185	AV newpadlist, newpad;	314	AV newpadlist, newpad;
186		315
187	newpadlist = newAV ();	316	newpadlist = newAV ();
188	AvREAL_off (newpadlist);	317	AvREAL_off (newpadlist);
189	#if PERL_VERSION_ATLEAST (5,9,0)	318	#if PERL_VERSION_ATLEAST (5,10,0)
190	Perl_pad_push (aTHX_ padlist, AvFILLp (padlist) + 1);	319	Perl_pad_push (aTHX_ padlist, AvFILLp (padlist) + 1);
191	#else	320	#else
192	Perl_pad_push (aTHX_ padlist, AvFILLp (padlist) + 1, 1);	321	Perl_pad_push (aTHX_ padlist, AvFILLp (padlist) + 1, 1);
193	#endif	322	#endif
194	newpad = (AV *)AvARRAY (padlist)[AvFILLp (padlist)];	323	newpad = (AV *)AvARRAY (padlist)[AvFILLp (padlist)];
…		…
199		328
200	return newpadlist;	329	return newpadlist;
201	}	330	}
202		331
203	static void	332	static void
204	free_padlist (AV *padlist)	333	free_padlist (pTHX_ AV *padlist)
205	{	334	{
206	/* may be during global destruction */	335	/* may be during global destruction */
207	if (SvREFCNT (padlist))	336	if (SvREFCNT (padlist))
208	{	337	{
209	I32 i = AvFILLp (padlist);	338	I32 i = AvFILLp (padlist);
…		…
230	AV *padlist;	359	AV *padlist;
231	AV av = (AV )mg->mg_obj;	360	AV av = (AV )mg->mg_obj;
232		361
233	/* casting is fun. */	362	/* casting is fun. */
234	while (&PL_sv_undef != (SV )(padlist = (AV )av_pop (av)))	363	while (&PL_sv_undef != (SV )(padlist = (AV )av_pop (av)))
235	free_padlist (padlist);	364	free_padlist (aTHX_ padlist);
236
237	SvREFCNT_dec (av);
238		365
239	return 0;	366	return 0;
240	}	367	}
241		368
242	#define PERL_MAGIC_coro PERL_MAGIC_ext	369	#define CORO_MAGIC_type_cv PERL_MAGIC_ext
		370	#define CORO_MAGIC_type_state PERL_MAGIC_ext
243		371
244	static MGVTBL vtbl_coro = {0, 0, 0, 0, coro_cv_free};	372	static MGVTBL coro_cv_vtbl = {
		373	0, 0, 0, 0,
		374	coro_cv_free
		375	};
		376
		377	#define CORO_MAGIC(sv,type) \
		378	SvMAGIC (sv) \
		379	? SvMAGIC (sv)->mg_type == type \
		380	? SvMAGIC (sv) \
		381	: mg_find (sv, type) \
		382	: 0
		383
		384	#define CORO_MAGIC_cv(cv) CORO_MAGIC (((SV *)(cv)), CORO_MAGIC_type_cv)
		385	#define CORO_MAGIC_state(sv) CORO_MAGIC (((SV *)(sv)), CORO_MAGIC_type_state)
		386
		387	static struct coro *
		388	SvSTATE_ (pTHX_ SV *coro)
		389	{
		390	HV *stash;
		391	MAGIC *mg;
		392
		393	if (SvROK (coro))
		394	coro = SvRV (coro);
		395
		396	if (expect_false (SvTYPE (coro) != SVt_PVHV))
		397	croak ("Coro::State object required");
		398
		399	stash = SvSTASH (coro);
		400	if (expect_false (stash != coro_stash && stash != coro_state_stash))
		401	{
		402	/* very slow, but rare, check */
		403	if (!sv_derived_from (sv_2mortal (newRV_inc (coro)), "Coro::State"))
		404	croak ("Coro::State object required");
		405	}
		406
		407	mg = CORO_MAGIC_state (coro);
		408	return (struct coro *)mg->mg_ptr;
		409	}
		410
		411	#define SvSTATE(sv) SvSTATE_ (aTHX_ (sv))
245		412
246	/* the next two functions merely cache the padlists */	413	/* the next two functions merely cache the padlists */
247	static void	414	static void
248	get_padlist (CV *cv)	415	get_padlist (pTHX_ CV *cv)
249	{	416	{
250	MAGIC mg = mg_find ((SV )cv, PERL_MAGIC_coro);	417	MAGIC *mg = CORO_MAGIC_cv (cv);
		418	AV *av;
251		419
252	if (mg && AvFILLp ((AV *)mg->mg_obj) >= 0)	420	if (expect_true (mg && AvFILLp ((av = (AV *)mg->mg_obj)) >= 0))
253	CvPADLIST (cv) = (AV )av_pop ((AV )mg->mg_obj);	421	CvPADLIST (cv) = (AV *)AvARRAY (av)[AvFILLp (av)--];
254	else	422	else
255	{	423	{
256	#if 0	424	#if CORO_PREFER_PERL_FUNCTIONS
257	/* this is probably cleaner, but also slower? */	425	/* this is probably cleaner, but also slower? */
258	CV *cp = Perl_cv_clone (cv);	426	CV *cp = Perl_cv_clone (cv);
259	CvPADLIST (cv) = CvPADLIST (cp);	427	CvPADLIST (cv) = CvPADLIST (cp);
260	CvPADLIST (cp) = 0;	428	CvPADLIST (cp) = 0;
261	SvREFCNT_dec (cp);	429	SvREFCNT_dec (cp);
262	#else	430	#else
263	CvPADLIST (cv) = coro_clone_padlist (cv);	431	CvPADLIST (cv) = coro_clone_padlist (aTHX_ cv);
264	#endif	432	#endif
265	}	433	}
266	}	434	}
267		435
268	static void	436	static void
269	put_padlist (CV *cv)	437	put_padlist (pTHX_ CV *cv)
270	{	438	{
271	MAGIC mg = mg_find ((SV )cv, PERL_MAGIC_coro);	439	MAGIC *mg = CORO_MAGIC_cv (cv);
		440	AV *av;
272		441
273	if (!mg)	442	if (expect_false (!mg))
274	{	443	mg = sv_magicext ((SV )cv, (SV )newAV (), CORO_MAGIC_type_cv, &coro_cv_vtbl, 0, 0);
275	sv_magic ((SV *)cv, 0, PERL_MAGIC_coro, 0, 0);
276	mg = mg_find ((SV *)cv, PERL_MAGIC_coro);
277	mg->mg_virtual = &vtbl_coro;
278	mg->mg_obj = (SV *)newAV ();
279	}
280		444
281	av_push ((AV )mg->mg_obj, (SV )CvPADLIST (cv));	445	av = (AV *)mg->mg_obj;
282	}
283		446
284	#define SB do {	447	if (expect_false (AvFILLp (av) >= AvMAX (av)))
285	#define SE } while (0)	448	av_extend (av, AvMAX (av) + 1);
286		449
287	#define LOAD(state) load_state((state));	450	AvARRAY (av)[++AvFILLp (av)] = (SV *)CvPADLIST (cv);
288	#define SAVE(state,flags) save_state((state),(flags));	451	}
289		452
290	#define REPLACE_SV(sv,val) SB SvREFCNT_dec(sv); (sv) = (val); (val) = 0; SE	453	/ load & save, init *****************************************************/
291		454
292	static void	455	static void
293	load_state(Coro__State c)	456	load_perl (pTHX_ Coro__State c)
294	{	457	{
295	PL_dowarn = c->dowarn;	458	perl_slots *slot = c->slot;
296	PL_in_eval = c->in_eval;	459	c->slot = 0;
297		460
298	PL_curstackinfo = c->curstackinfo;
299	PL_curstack = c->curstack;
300	PL_mainstack = c->mainstack;	461	PL_mainstack = c->mainstack;
301	PL_stack_sp = c->stack_sp;
302	PL_op = c->op;
303	PL_curpad = c->curpad;
304	PL_comppad = c->comppad;
305	PL_compcv = c->compcv;
306	PL_stack_base = c->stack_base;
307	PL_stack_max = c->stack_max;
308	PL_tmps_stack = c->tmps_stack;
309	PL_tmps_floor = c->tmps_floor;
310	PL_tmps_ix = c->tmps_ix;
311	PL_tmps_max = c->tmps_max;
312	PL_markstack = c->markstack;
313	PL_markstack_ptr = c->markstack_ptr;
314	PL_markstack_max = c->markstack_max;
315	PL_scopestack = c->scopestack;
316	PL_scopestack_ix = c->scopestack_ix;
317	PL_scopestack_max = c->scopestack_max;
318	PL_savestack = c->savestack;
319	PL_savestack_ix = c->savestack_ix;
320	PL_savestack_max = c->savestack_max;
321	#if !PERL_VERSION_ATLEAST (5,9,0)
322	PL_retstack = c->retstack;
323	PL_retstack_ix = c->retstack_ix;
324	PL_retstack_max = c->retstack_max;
325	#endif
326	PL_curpm = c->curpm;
327	PL_curcop = c->curcop;
328		462
329	if (c->defav) REPLACE_SV (GvAV (PL_defgv), c->defav);	463	GvSV (PL_defgv) = slot->defsv;
330	if (c->defsv) REPLACE_SV (DEFSV , c->defsv);	464	GvAV (PL_defgv) = slot->defav;
331	if (c->errsv) REPLACE_SV (ERRSV , c->errsv);	465	GvSV (PL_errgv) = slot->errsv;
		466	GvSV (irsgv) = slot->irsgv;
		467
		468	#define VAR(name,type) PL_ ## name = slot->name;
		469	# include "state.h"
		470	#undef VAR
332		471
333	{	472	{
334	dSP;	473	dSP;
		474
335	CV *cv;	475	CV *cv;
336		476
337	/* now do the ugly restore mess */	477	/* now do the ugly restore mess */
338	while ((cv = (CV *)POPs))	478	while (expect_true (cv = (CV *)POPs))
339	{	479	{
340	AV padlist = (AV )POPs;
341
342	if (padlist)
343	{
344	put_padlist (cv); /* mark this padlist as available */	480	put_padlist (aTHX_ cv); /* mark this padlist as available */
345	CvPADLIST(cv) = padlist;	481	CvDEPTH (cv) = PTR2IV (POPs);
346	}	482	CvPADLIST (cv) = (AV *)POPs;
347
348	++CvDEPTH(cv);
349	}	483	}
350		484
351	PUTBACK;	485	PUTBACK;
352	}	486	}
353	}	487	}
354		488
355	static void	489	static void
356	save_state(Coro__State c, int flags)	490	save_perl (pTHX_ Coro__State c)
357	{	491	{
358	{	492	{
359	dSP;	493	dSP;
360	I32 cxix = cxstack_ix;	494	I32 cxix = cxstack_ix;
361	PERL_CONTEXT *ccstk = cxstack;	495	PERL_CONTEXT *ccstk = cxstack;
…		…
364	/*	498	/*
365	* the worst thing you can imagine happens first - we have to save	499	* the worst thing you can imagine happens first - we have to save
366	* (and reinitialize) all cv's in the whole callchain :(	500	* (and reinitialize) all cv's in the whole callchain :(
367	*/	501	*/
368		502
369	PUSHs (Nullsv);	503	XPUSHs (Nullsv);
370	/* this loop was inspired by pp_caller */	504	/* this loop was inspired by pp_caller */
371	for (;;)	505	for (;;)
372	{	506	{
373	while (cxix >= 0)	507	while (expect_true (cxix >= 0))
374	{	508	{
375	PERL_CONTEXT *cx = &ccstk[cxix--];	509	PERL_CONTEXT *cx = &ccstk[cxix--];
376		510
377	if (CxTYPE(cx) == CXt_SUB)	511	if (expect_true (CxTYPE (cx) == CXt_SUB \|\| CxTYPE (cx) == CXt_FORMAT))
378	{	512	{
379	CV *cv = cx->blk_sub.cv;	513	CV *cv = cx->blk_sub.cv;
		514
380	if (CvDEPTH(cv))	515	if (expect_true (CvDEPTH (cv)))
381	{	516	{
382	EXTEND (SP, CvDEPTH(cv)*2);	517	EXTEND (SP, 3);
383
384	while (--CvDEPTH(cv))
385	{
386	/* this tells the restore code to increment CvDEPTH */
387	PUSHs (Nullsv);
388	PUSHs ((SV *)cv);
389	}
390
391	PUSHs ((SV *)CvPADLIST(cv));	518	PUSHs ((SV *)CvPADLIST (cv));
		519	PUSHs (INT2PTR (SV *, (IV)CvDEPTH (cv)));
392	PUSHs ((SV *)cv);	520	PUSHs ((SV *)cv);
393		521
		522	CvDEPTH (cv) = 0;
394	get_padlist (cv);	523	get_padlist (aTHX_ cv);
395	}	524	}
396	}	525	}
397	#ifdef CXt_FORMAT
398	else if (CxTYPE(cx) == CXt_FORMAT)
399	{
400	/* I never used formats, so how should I know how these are implemented? */
401	/* my bold guess is as a simple, plain sub... */
402	croak ("CXt_FORMAT not yet handled. Don't switch coroutines from within formats");
403	}
404	#endif
405	}	526	}
406		527
407	if (top_si->si_type == PERLSI_MAIN)	528	if (expect_true (top_si->si_type == PERLSI_MAIN))
408	break;	529	break;
409		530
410	top_si = top_si->si_prev;	531	top_si = top_si->si_prev;
411	ccstk = top_si->si_cxstack;	532	ccstk = top_si->si_cxstack;
412	cxix = top_si->si_cxix;	533	cxix = top_si->si_cxix;
413	}	534	}
414		535
415	PUTBACK;	536	PUTBACK;
416	}	537	}
417		538
418	c->defav = flags & TRANSFER_SAVE_DEFAV ? (AV *)SvREFCNT_inc (GvAV (PL_defgv)) : 0;	539	/* allocate some space on the context stack for our purposes */
419	c->defsv = flags & TRANSFER_SAVE_DEFSV ? SvREFCNT_inc (DEFSV) : 0;	540	/* we manually unroll here, as usually 2 slots is enough */
420	c->errsv = flags & TRANSFER_SAVE_ERRSV ? SvREFCNT_inc (ERRSV) : 0;	541	if (SLOT_COUNT >= 1) CXINC;
		542	if (SLOT_COUNT >= 2) CXINC;
		543	if (SLOT_COUNT >= 3) CXINC;
		544	{
		545	int i;
		546	for (i = 3; i < SLOT_COUNT; ++i)
		547	CXINC;
		548	}
		549	cxstack_ix -= SLOT_COUNT; /* undo allocation */
421		550
422	c->dowarn = PL_dowarn;
423	c->in_eval = PL_in_eval;
424
425	c->curstackinfo = PL_curstackinfo;
426	c->curstack = PL_curstack;
427	c->mainstack = PL_mainstack;	551	c->mainstack = PL_mainstack;
428	c->stack_sp = PL_stack_sp;	552
429	c->op = PL_op;	553	{
430	c->curpad = PL_curpad;	554	perl_slots slot = c->slot = (perl_slots )(cxstack + cxstack_ix + 1);
431	c->comppad = PL_comppad;	555
432	c->compcv = PL_compcv;	556	slot->defav = GvAV (PL_defgv);
433	c->stack_base = PL_stack_base;	557	slot->defsv = DEFSV;
434	c->stack_max = PL_stack_max;	558	slot->errsv = ERRSV;
435	c->tmps_stack = PL_tmps_stack;	559	slot->irsgv = GvSV (irsgv);
436	c->tmps_floor = PL_tmps_floor;	560
437	c->tmps_ix = PL_tmps_ix;	561	#define VAR(name,type) slot->name = PL_ ## name;
438	c->tmps_max = PL_tmps_max;	562	# include "state.h"
439	c->markstack = PL_markstack;	563	#undef VAR
440	c->markstack_ptr = PL_markstack_ptr;	564	}
441	c->markstack_max = PL_markstack_max;
442	c->scopestack = PL_scopestack;
443	c->scopestack_ix = PL_scopestack_ix;
444	c->scopestack_max = PL_scopestack_max;
445	c->savestack = PL_savestack;
446	c->savestack_ix = PL_savestack_ix;
447	c->savestack_max = PL_savestack_max;
448	#if !PERL_VERSION_ATLEAST (5,9,0)
449	c->retstack = PL_retstack;
450	c->retstack_ix = PL_retstack_ix;
451	c->retstack_max = PL_retstack_max;
452	#endif
453	c->curpm = PL_curpm;
454	c->curcop = PL_curcop;
455	}	565	}
456		566
457	/*	567	/*
458	* allocate various perl stacks. This is an exact copy	568	* allocate various perl stacks. This is an exact copy
459	* of perl.c:init_stacks, except that it uses less memory	569	* of perl.c:init_stacks, except that it uses less memory
460	* on the (sometimes correct) assumption that coroutines do	570	* on the (sometimes correct) assumption that coroutines do
461	* not usually need a lot of stackspace.	571	* not usually need a lot of stackspace.
462	*/	572	*/
		573	#if CORO_PREFER_PERL_FUNCTIONS
		574	# define coro_init_stacks init_stacks
		575	#else
463	static void	576	static void
464	coro_init_stacks ()	577	coro_init_stacks (pTHX)
465	{	578	{
466	PL_curstackinfo = new_stackinfo(96, 1024/sizeof(PERL_CONTEXT) - 1);	579	PL_curstackinfo = new_stackinfo(32, 8);
467	PL_curstackinfo->si_type = PERLSI_MAIN;	580	PL_curstackinfo->si_type = PERLSI_MAIN;
468	PL_curstack = PL_curstackinfo->si_stack;	581	PL_curstack = PL_curstackinfo->si_stack;
469	PL_mainstack = PL_curstack; /* remember in case we switch stacks */	582	PL_mainstack = PL_curstack; /* remember in case we switch stacks */
470		583
471	PL_stack_base = AvARRAY(PL_curstack);	584	PL_stack_base = AvARRAY(PL_curstack);
472	PL_stack_sp = PL_stack_base;	585	PL_stack_sp = PL_stack_base;
473	PL_stack_max = PL_stack_base + AvMAX(PL_curstack);	586	PL_stack_max = PL_stack_base + AvMAX(PL_curstack);
474		587
475	New(50,PL_tmps_stack,96,SV*);	588	New(50,PL_tmps_stack,32,SV*);
476	PL_tmps_floor = -1;	589	PL_tmps_floor = -1;
477	PL_tmps_ix = -1;	590	PL_tmps_ix = -1;
478	PL_tmps_max = 96;	591	PL_tmps_max = 32;
479		592
480	New(54,PL_markstack,16,I32);	593	New(54,PL_markstack,16,I32);
481	PL_markstack_ptr = PL_markstack;	594	PL_markstack_ptr = PL_markstack;
482	PL_markstack_max = PL_markstack + 16;	595	PL_markstack_max = PL_markstack + 16;
483		596
484	#ifdef SET_MARK_OFFSET	597	#ifdef SET_MARK_OFFSET
485	SET_MARK_OFFSET;	598	SET_MARK_OFFSET;
486	#endif	599	#endif
487		600
488	New(54,PL_scopestack,16,I32);	601	New(54,PL_scopestack,8,I32);
489	PL_scopestack_ix = 0;	602	PL_scopestack_ix = 0;
490	PL_scopestack_max = 16;	603	PL_scopestack_max = 8;
491		604
492	New(54,PL_savestack,96,ANY);	605	New(54,PL_savestack,24,ANY);
493	PL_savestack_ix = 0;	606	PL_savestack_ix = 0;
494	PL_savestack_max = 96;	607	PL_savestack_max = 24;
495		608
496	#if !PERL_VERSION_ATLEAST (5,9,0)	609	#if !PERL_VERSION_ATLEAST (5,10,0)
497	New(54,PL_retstack,8,OP*);	610	New(54,PL_retstack,4,OP*);
498	PL_retstack_ix = 0;	611	PL_retstack_ix = 0;
499	PL_retstack_max = 8;	612	PL_retstack_max = 4;
500	#endif	613	#endif
501	}	614	}
		615	#endif
502		616
503	/*	617	/*
504	* destroy the stacks, the callchain etc...	618	* destroy the stacks, the callchain etc...
505	*/	619	*/
506	static void	620	static void
507	coro_destroy_stacks ()	621	coro_destroy_stacks (pTHX)
508	{	622	{
509	if (!IN_DESTRUCT)
510	{
511	/* is this ugly, I ask? */
512	LEAVE_SCOPE (0);
513
514	/* sure it is, but more important: is it correct?? :/ */
515	FREETMPS;
516
517	/POPSTACK_TO (PL_mainstack);//D//use/
518	}
519
520	while (PL_curstackinfo->si_next)	623	while (PL_curstackinfo->si_next)
521	PL_curstackinfo = PL_curstackinfo->si_next;	624	PL_curstackinfo = PL_curstackinfo->si_next;
522		625
523	while (PL_curstackinfo)	626	while (PL_curstackinfo)
524	{	627	{
525	PERL_SI *p = PL_curstackinfo->si_prev;	628	PERL_SI *p = PL_curstackinfo->si_prev;
526		629
527	{ /D//remove/
528	dSP;
529	SWITCHSTACK (PL_curstack, PL_curstackinfo->si_stack);
530	PUTBACK; /* possibly superfluous */
531	}
532
533	if (!IN_DESTRUCT)	630	if (!IN_DESTRUCT)
534	{
535	dounwind (-1);/D//remove/
536	SvREFCNT_dec (PL_curstackinfo->si_stack);	631	SvREFCNT_dec (PL_curstackinfo->si_stack);
537	}
538		632
539	Safefree (PL_curstackinfo->si_cxstack);	633	Safefree (PL_curstackinfo->si_cxstack);
540	Safefree (PL_curstackinfo);	634	Safefree (PL_curstackinfo);
541	PL_curstackinfo = p;	635	PL_curstackinfo = p;
542	}	636	}
543		637
544	Safefree (PL_tmps_stack);	638	Safefree (PL_tmps_stack);
545	Safefree (PL_markstack);	639	Safefree (PL_markstack);
546	Safefree (PL_scopestack);	640	Safefree (PL_scopestack);
547	Safefree (PL_savestack);	641	Safefree (PL_savestack);
548	#if !PERL_VERSION_ATLEAST (5,9,0)	642	#if !PERL_VERSION_ATLEAST (5,10,0)
549	Safefree (PL_retstack);	643	Safefree (PL_retstack);
550	#endif	644	#endif
551	}	645	}
552		646
		647	static size_t
		648	coro_rss (pTHX_ struct coro *coro)
		649	{
		650	size_t rss = sizeof (*coro);
		651
		652	if (coro->mainstack)
		653	{
		654	perl_slots tmp_slot;
		655	perl_slots *slot;
		656
		657	if (coro->flags & CF_RUNNING)
		658	{
		659	slot = &tmp_slot;
		660
		661	#define VAR(name,type) slot->name = PL_ ## name;
		662	# include "state.h"
		663	#undef VAR
		664	}
		665	else
		666	slot = coro->slot;
		667
		668	rss += sizeof (slot->curstackinfo);
		669	rss += (slot->curstackinfo->si_cxmax + 1) * sizeof (PERL_CONTEXT);
		670	rss += sizeof (SV) + sizeof (struct xpvav) + (1 + AvMAX (slot->curstack)) * sizeof (SV *);
		671	rss += slot->tmps_max * sizeof (SV *);
		672	rss += (slot->markstack_max - slot->markstack_ptr) * sizeof (I32);
		673	rss += slot->scopestack_max * sizeof (I32);
		674	rss += slot->savestack_max * sizeof (ANY);
		675
		676	#if !PERL_VERSION_ATLEAST (5,10,0)
		677	rss += slot->retstack_max * sizeof (OP *);
		678	#endif
		679	}
		680
		681	return rss;
		682	}
		683
		684	/ coroutine stack handling **********************************************/
		685
		686	static int (orig_sigelem_get) (pTHX_ SV sv, MAGIC *mg);
		687	static int (orig_sigelem_set) (pTHX_ SV sv, MAGIC *mg);
		688
		689	/* apparently < 5.8.8 */
		690	#undef MgPV_nolen_const
		691	#ifndef MgPV_nolen_const
		692	#define MgPV_nolen_const(mg) (((((int)(mg)->mg_len)) == HEf_SVKEY) ? \
		693	SvPV_nolen_const((SV*)((mg)->mg_ptr)) : \
		694	(const char*)(mg)->mg_ptr)
		695	#endif
		696
		697	/*
		698	* This overrides the default magic get method of %SIG elements.
		699	* The original one doesn't provide for reading back of PL_diehook/PL_warnhook
		700	* and instead of tryign to save and restore the hash elements, we just provide
		701	* readback here.
		702	* We only do this when the hook is != 0, as they are often set to 0 temporarily,
		703	* not expecting this to actually change the hook. This is a potential problem
		704	* when a schedule happens then, but we ignore this.
		705	*/
		706	static int
		707	coro_sigelem_get (pTHX_ SV sv, MAGIC mg)
		708	{
		709	const char *s = MgPV_nolen_const (mg);
		710
		711	if (*s == '_')
		712	{
		713	if (strEQ (s, "__DIE__" ) && PL_diehook ) return sv_setsv (sv, PL_diehook ), 0;
		714	if (strEQ (s, "__WARN__") && PL_warnhook) return sv_setsv (sv, PL_warnhook), 0;
		715	}
		716
		717	return orig_sigelem_get ? orig_sigelem_get (aTHX_ sv, mg) : 0;
		718	}
		719
		720	static int
		721	coro_sigelem_set (pTHX_ SV sv, MAGIC mg)
		722	{
		723	const char *s = MgPV_nolen_const (mg);
		724
		725	if (*s == '_')
		726	{
		727	SV **svp = 0;
		728
		729	if (strEQ (s, "__DIE__" )) svp = &PL_diehook;
		730	if (strEQ (s, "__WARN__")) svp = &PL_warnhook;
		731
		732	if (svp)
		733	{
		734	SV old = svp;
		735	*svp = newSVsv (sv);
		736	SvREFCNT_dec (old);
		737	return 0;
		738	}
		739	}
		740
		741	return orig_sigelem_set ? orig_sigelem_set (aTHX_ sv, mg) : 0;
		742	}
		743
553	static void	744	static void
554	setup_coro (struct coro *coro)	745	coro_setup (pTHX_ struct coro *coro)
555	{	746	{
556	/*	747	/*
557	* emulate part of the perl startup here.	748	* emulate part of the perl startup here.
558	*/	749	*/
559
560	coro_init_stacks ();	750	coro_init_stacks (aTHX);
561		751
		752	PL_runops = RUNOPS_DEFAULT;
		753	PL_curcop = &PL_compiling;
		754	PL_in_eval = EVAL_NULL;
562	PL_curcop = 0;	755	PL_comppad = 0;
563	PL_in_eval = 0;
564	PL_curpm = 0;	756	PL_curpm = 0;
		757	PL_curpad = 0;
		758	PL_localizing = 0;
		759	PL_dirty = 0;
		760	PL_restartop = 0;
		761	#if PERL_VERSION_ATLEAST (5,10,0)
		762	PL_parser = 0;
		763	#endif
		764
		765	/* recreate the die/warn hooks */
		766	PL_diehook = 0; SvSetMagicSV (*hv_fetch (hv_sig, "__DIE__" , sizeof ("__DIE__" ) - 1, 1), rv_diehook );
		767	PL_warnhook = 0; SvSetMagicSV (*hv_fetch (hv_sig, "__WARN__", sizeof ("__WARN__") - 1, 1), rv_warnhook);
		768
		769	GvSV (PL_defgv) = newSV (0);
		770	GvAV (PL_defgv) = coro->args; coro->args = 0;
		771	GvSV (PL_errgv) = newSV (0);
		772	GvSV (irsgv) = newSVpvn ("\n", 1); sv_magic (GvSV (irsgv), (SV *)irsgv, PERL_MAGIC_sv, "/", 0);
		773	PL_rs = newSVsv (GvSV (irsgv));
		774	PL_defoutgv = (GV *)SvREFCNT_inc (stdoutgv);
565		775
566	{	776	{
567	dSP;	777	dSP;
568	LOGOP myop;	778	LOGOP myop;
569		779
570	/* I have no idea why this is needed, but it is */
571	PUSHMARK (SP);
572
573	SvREFCNT_dec (GvAV (PL_defgv));
574	GvAV (PL_defgv) = coro->args; coro->args = 0;
575
576	Zero (&myop, 1, LOGOP);	780	Zero (&myop, 1, LOGOP);
577	myop.op_next = Nullop;	781	myop.op_next = Nullop;
578	myop.op_flags = OPf_WANT_VOID;	782	myop.op_flags = OPf_WANT_VOID;
579		783
		784	PUSHMARK (SP);
		785	XPUSHs (sv_2mortal (av_shift (GvAV (PL_defgv))));
		786	PUTBACK;
580	PL_op = (OP *)&myop;	787	PL_op = (OP *)&myop;
581
582	PUSHMARK (SP);
583	XPUSHs ((SV *)get_cv ("Coro::State::coro_init", FALSE));
584	PUTBACK;
585	PL_op = PL_ppaddr[OP_ENTERSUB](aTHX);	788	PL_op = PL_ppaddr[OP_ENTERSUB](aTHX);
586	SPAGAIN;	789	SPAGAIN;
587
588	ENTER; /* necessary e.g. for dounwind */
589	}	790	}
		791
		792	/* this newly created coroutine might be run on an existing cctx which most
		793	* likely was suspended in set_stacklevel, called from entersub.
		794	* set_stacklevl doesn't do anything on return, but entersub does LEAVE,
		795	* so we ENTER here for symmetry
		796	*/
		797	ENTER;
590	}	798	}
591		799
592	static void	800	static void
		801	coro_destroy (pTHX_ struct coro *coro)
		802	{
		803	if (!IN_DESTRUCT)
		804	{
		805	/* restore all saved variables and stuff */
		806	LEAVE_SCOPE (0);
		807	assert (PL_tmps_floor == -1);
		808
		809	/* free all temporaries */
		810	FREETMPS;
		811	assert (PL_tmps_ix == -1);
		812
		813	/* unwind all extra stacks */
		814	POPSTACK_TO (PL_mainstack);
		815
		816	/* unwind main stack */
		817	dounwind (-1);
		818	}
		819
		820	SvREFCNT_dec (GvSV (PL_defgv));
		821	SvREFCNT_dec (GvAV (PL_defgv));
		822	SvREFCNT_dec (GvSV (PL_errgv));
		823	SvREFCNT_dec (PL_defoutgv);
		824	SvREFCNT_dec (PL_rs);
		825	SvREFCNT_dec (GvSV (irsgv));
		826
		827	SvREFCNT_dec (PL_diehook);
		828	SvREFCNT_dec (PL_warnhook);
		829
		830	SvREFCNT_dec (coro->saved_deffh);
		831	SvREFCNT_dec (coro->throw);
		832
		833	coro_destroy_stacks (aTHX);
		834	}
		835
		836	static void
593	free_coro_mortal ()	837	free_coro_mortal (pTHX)
594	{	838	{
595	if (coro_mortal)	839	if (expect_true (coro_mortal))
596	{	840	{
597	SvREFCNT_dec (coro_mortal);	841	SvREFCNT_dec (coro_mortal);
598	coro_mortal = 0;	842	coro_mortal = 0;
599	}	843	}
600	}	844	}
601		845
		846	static int
		847	runops_trace (pTHX)
		848	{
		849	COP *oldcop = 0;
		850	int oldcxix = -2;
		851	struct coro coro = SvSTATE (coro_current); / trace cctx is tied to specific coro */
		852	coro_cctx *cctx = coro->cctx;
		853
		854	while ((PL_op = CALL_FPTR (PL_op->op_ppaddr) (aTHX)))
		855	{
		856	PERL_ASYNC_CHECK ();
		857
		858	if (cctx->flags & CC_TRACE_ALL)
		859	{
		860	if (PL_op->op_type == OP_LEAVESUB && cctx->flags & CC_TRACE_SUB)
		861	{
		862	PERL_CONTEXT *cx = &cxstack[cxstack_ix];
		863	SV bot, top;
		864	AV av = newAV (); / return values */
		865	SV **cb;
		866	dSP;
		867
		868	GV *gv = CvGV (cx->blk_sub.cv);
		869	SV *fullname = sv_2mortal (newSV (0));
		870	if (isGV (gv))
		871	gv_efullname3 (fullname, gv, 0);
		872
		873	bot = PL_stack_base + cx->blk_oldsp + 1;
		874	top = cx->blk_gimme == G_ARRAY ? SP + 1
		875	: cx->blk_gimme == G_SCALAR ? bot + 1
		876	: bot;
		877
		878	av_extend (av, top - bot);
		879	while (bot < top)
		880	av_push (av, SvREFCNT_inc (*bot++));
		881
		882	PL_runops = RUNOPS_DEFAULT;
		883	ENTER;
		884	SAVETMPS;
		885	EXTEND (SP, 3);
		886	PUSHMARK (SP);
		887	PUSHs (&PL_sv_no);
		888	PUSHs (fullname);
		889	PUSHs (sv_2mortal (newRV_noinc ((SV *)av)));
		890	PUTBACK;
		891	cb = hv_fetch ((HV *)SvRV (coro_current), "_trace_sub_cb", sizeof ("_trace_sub_cb") - 1, 0);
		892	if (cb) call_sv (*cb, G_KEEPERR \| G_EVAL \| G_VOID \| G_DISCARD);
		893	SPAGAIN;
		894	FREETMPS;
		895	LEAVE;
		896	PL_runops = runops_trace;
		897	}
		898
		899	if (oldcop != PL_curcop)
		900	{
		901	oldcop = PL_curcop;
		902
		903	if (PL_curcop != &PL_compiling)
		904	{
		905	SV **cb;
		906
		907	if (oldcxix != cxstack_ix && cctx->flags & CC_TRACE_SUB)
		908	{
		909	PERL_CONTEXT *cx = &cxstack[cxstack_ix];
		910
		911	if (CxTYPE (cx) == CXt_SUB && oldcxix < cxstack_ix)
		912	{
		913	runops_proc_t old_runops = PL_runops;
		914	dSP;
		915	GV *gv = CvGV (cx->blk_sub.cv);
		916	SV *fullname = sv_2mortal (newSV (0));
		917
		918	if (isGV (gv))
		919	gv_efullname3 (fullname, gv, 0);
		920
		921	PL_runops = RUNOPS_DEFAULT;
		922	ENTER;
		923	SAVETMPS;
		924	EXTEND (SP, 3);
		925	PUSHMARK (SP);
		926	PUSHs (&PL_sv_yes);
		927	PUSHs (fullname);
		928	PUSHs (CxHASARGS (cx) ? sv_2mortal (newRV_inc ((SV *)cx->blk_sub.argarray)) : &PL_sv_undef);
		929	PUTBACK;
		930	cb = hv_fetch ((HV *)SvRV (coro_current), "_trace_sub_cb", sizeof ("_trace_sub_cb") - 1, 0);
		931	if (cb) call_sv (*cb, G_KEEPERR \| G_EVAL \| G_VOID \| G_DISCARD);
		932	SPAGAIN;
		933	FREETMPS;
		934	LEAVE;
		935	PL_runops = runops_trace;
		936	}
		937
		938	oldcxix = cxstack_ix;
		939	}
		940
		941	if (cctx->flags & CC_TRACE_LINE)
		942	{
		943	dSP;
		944
		945	PL_runops = RUNOPS_DEFAULT;
		946	ENTER;
		947	SAVETMPS;
		948	EXTEND (SP, 3);
		949	PL_runops = RUNOPS_DEFAULT;
		950	PUSHMARK (SP);
		951	PUSHs (sv_2mortal (newSVpv (OutCopFILE (oldcop), 0)));
		952	PUSHs (sv_2mortal (newSViv (CopLINE (oldcop))));
		953	PUTBACK;
		954	cb = hv_fetch ((HV *)SvRV (coro_current), "_trace_line_cb", sizeof ("_trace_line_cb") - 1, 0);
		955	if (cb) call_sv (*cb, G_KEEPERR \| G_EVAL \| G_VOID \| G_DISCARD);
		956	SPAGAIN;
		957	FREETMPS;
		958	LEAVE;
		959	PL_runops = runops_trace;
		960	}
		961	}
		962	}
		963	}
		964	}
		965
		966	TAINT_NOT;
		967	return 0;
		968	}
		969
		970	/* inject a fake call to Coro::State::_cctx_init into the execution */
		971	/* _cctx_init should be careful, as it could be called at almost any time */
		972	/* during execution of a perl program */
602	static void NOINLINE	973	static void NOINLINE
603	prepare_cctx (coro_cctx *cctx)	974	cctx_prepare (pTHX_ coro_cctx *cctx)
604	{	975	{
605	dSP;	976	dSP;
606	LOGOP myop;	977	LOGOP myop;
607		978
		979	PL_top_env = &PL_start_env;
		980
		981	if (cctx->flags & CC_TRACE)
		982	PL_runops = runops_trace;
		983
608	Zero (&myop, 1, LOGOP);	984	Zero (&myop, 1, LOGOP);
609	myop.op_next = PL_op;	985	myop.op_next = PL_op;
610	myop.op_flags = OPf_WANT_VOID;	986	myop.op_flags = OPf_WANT_VOID \| OPf_STACKED;
611
612	sv_setiv (get_sv ("Coro::State::cctx", FALSE), PTR2IV (cctx));
613		987
614	PUSHMARK (SP);	988	PUSHMARK (SP);
		989	EXTEND (SP, 2);
		990	PUSHs (sv_2mortal (newSViv (PTR2IV (cctx))));
615	XPUSHs ((SV *)get_cv ("Coro::State::cctx_init", FALSE));	991	PUSHs ((SV *)get_cv ("Coro::State::_cctx_init", FALSE));
616	PUTBACK;	992	PUTBACK;
		993	PL_op = (OP *)&myop;
617	PL_restartop = PL_ppaddr[OP_ENTERSUB](aTHX);	994	PL_op = PL_ppaddr[OP_ENTERSUB](aTHX);
618	SPAGAIN;	995	SPAGAIN;
619	}	996	}
620		997
		998	/*
		999	* this is a _very_ stripped down perl interpreter ;)
		1000	*/
621	static void	1001	static void
622	coro_run (void *arg)	1002	cctx_run (void *arg)
623	{	1003	{
		1004	dTHX;
		1005
624	/* coro_run is the alternative epilogue of transfer() */	1006	/* cctx_run is the alternative tail of transfer(), so unlock here. */
625	UNLOCK;	1007	UNLOCK;
626		1008
		1009	/* we now skip the entersub that lead to transfer() */
		1010	PL_op = PL_op->op_next;
		1011
		1012	/* inject a fake subroutine call to cctx_init */
		1013	cctx_prepare (aTHX_ (coro_cctx *)arg);
		1014
		1015	/* somebody or something will hit me for both perl_run and PL_restartop */
		1016	PL_restartop = PL_op;
		1017	perl_run (PL_curinterp);
		1018
627	/*	1019	/*
628	* this is a _very_ stripped down perl interpreter ;)	1020	* If perl-run returns we assume exit() was being called or the coro
		1021	* fell off the end, which seems to be the only valid (non-bug)
		1022	* reason for perl_run to return. We try to exit by jumping to the
		1023	* bootstrap-time "top" top_env, as we cannot restore the "main"
		1024	* coroutine as Coro has no such concept
629	*/	1025	*/
630	PL_top_env = &PL_start_env;	1026	PL_top_env = main_top_env;
631	/* inject call to cctx_init */	1027	JMPENV_JUMP (2); /* I do not feel well about the hardcoded 2 at all */
632	prepare_cctx ((coro_cctx *)arg);
633
634	/* somebody will hit me for both perl_run and PL_restartop */
635	perl_run (PL_curinterp);
636
637	fputs ("FATAL: C coroutine fell over the edge of the world, aborting. Did you call exit in a coroutine?\n", stderr);
638	abort ();
639	}	1028	}
640		1029
641	static coro_cctx *	1030	static coro_cctx *
642	cctx_new ()	1031	cctx_new ()
643	{	1032	{
644	coro_cctx *cctx;	1033	coro_cctx *cctx;
		1034	void *stack_start;
		1035	size_t stack_size;
645		1036
		1037	++cctx_count;
		1038
646	New (0, cctx, 1, coro_cctx);	1039	Newz (0, cctx, 1, coro_cctx);
647		1040
648	#if HAVE_MMAP	1041	#if HAVE_MMAP
649
650	cctx->ssize = ((STACKSIZE * sizeof (long) + PAGESIZE - 1) / PAGESIZE + STACKGUARD) * PAGESIZE;	1042	cctx->ssize = ((coro_stacksize * sizeof (long) + PAGESIZE - 1) / PAGESIZE + CORO_STACKGUARD) * PAGESIZE;
651	/* mmap suppsedly does allocate-on-write for us */	1043	/* mmap supposedly does allocate-on-write for us */
652	cctx->sptr = mmap (0, cctx->ssize, PROT_EXEC\|PROT_READ\|PROT_WRITE, MAP_PRIVATE\|MAP_ANONYMOUS, 0, 0);	1044	cctx->sptr = mmap (0, cctx->ssize, PROT_EXEC\|PROT_READ\|PROT_WRITE, MAP_PRIVATE\|MAP_ANONYMOUS, 0, 0);
653		1045
654	if (cctx->sptr == (void *)-1)	1046	if (cctx->sptr != (void *)-1)
655	{
656	perror ("FATAL: unable to mmap stack for coroutine");
657	_exit (EXIT_FAILURE);
658	}	1047	{
659
660	# if STACKGUARD	1048	# if CORO_STACKGUARD
661	mprotect (cctx->sptr, STACKGUARD * PAGESIZE, PROT_NONE);	1049	mprotect (cctx->sptr, CORO_STACKGUARD * PAGESIZE, PROT_NONE);
662	# endif	1050	# endif
		1051	stack_start = CORO_STACKGUARD * PAGESIZE + (char *)cctx->sptr;
		1052	stack_size = cctx->ssize - CORO_STACKGUARD * PAGESIZE;
		1053	cctx->flags \|= CC_MAPPED;
		1054	}
		1055	else
		1056	#endif
		1057	{
		1058	cctx->ssize = coro_stacksize * (long)sizeof (long);
		1059	New (0, cctx->sptr, coro_stacksize, long);
663		1060
664	#else
665
666	cctx->ssize = STACKSIZE * (long)sizeof (long);
667	New (0, cctx->sptr, STACKSIZE, long);
668
669	if (!cctx->sptr)	1061	if (!cctx->sptr)
670	{	1062	{
671	perror ("FATAL: unable to malloc stack for coroutine");	1063	perror ("FATAL: unable to allocate stack for coroutine");
672	_exit (EXIT_FAILURE);	1064	_exit (EXIT_FAILURE);
673	}	1065	}
674		1066
675	#endif	1067	stack_start = cctx->sptr;
		1068	stack_size = cctx->ssize;
		1069	}
676		1070
677	#if USE_VALGRIND	1071	REGISTER_STACK (cctx, (char )stack_start, (char )stack_start + stack_size);
678	cctx->valgrind_id = VALGRIND_STACK_REGISTER (	1072	coro_create (&cctx->cctx, cctx_run, (void *)cctx, stack_start, stack_size);
679	STACKGUARD * PAGESIZE + (char *)cctx->sptr,
680	cctx->ssize + (char *)cctx->sptr
681	);
682	#endif
683
684	coro_create (&cctx->cctx, coro_run, (void *)cctx, cctx->sptr, cctx->ssize);
685		1073
686	return cctx;	1074	return cctx;
687	}	1075	}
688		1076
689	static void	1077	static void
690	cctx_free (coro_cctx *cctx)	1078	cctx_destroy (coro_cctx *cctx)
691	{	1079	{
692	if (!cctx)	1080	if (!cctx)
693	return;	1081	return;
694		1082
		1083	--cctx_count;
		1084
695	#if USE_VALGRIND	1085	#if CORO_USE_VALGRIND
696	VALGRIND_STACK_DEREGISTER (cctx->valgrind_id);	1086	VALGRIND_STACK_DEREGISTER (cctx->valgrind_id);
697	#endif	1087	#endif
698		1088
699	#if HAVE_MMAP	1089	#if HAVE_MMAP
		1090	if (cctx->flags & CC_MAPPED)
700	munmap (cctx->sptr, cctx->ssize);	1091	munmap (cctx->sptr, cctx->ssize);
701	#else	1092	else
		1093	#endif
702	Safefree (cctx->sptr);	1094	Safefree (cctx->sptr);
703	#endif
704		1095
705	Safefree (cctx);	1096	Safefree (cctx);
706	}	1097	}
707		1098
708	static coro_cctx *cctx_first;	1099	/* wether this cctx should be destructed */
709	static int cctx_count, cctx_idle;	1100	#define CCTX_EXPIRED(cctx) ((cctx)->ssize < coro_stacksize \|\| ((cctx)->flags & CC_NOREUSE))
710		1101
711	static coro_cctx *	1102	static coro_cctx *
712	cctx_get ()	1103	cctx_get (pTHX)
713	{	1104	{
714	coro_cctx *cctx;	1105	while (expect_true (cctx_first))
715
716	if (cctx_first)
717	{	1106	{
		1107	coro_cctx *cctx = cctx_first;
		1108	cctx_first = cctx->next;
718	--cctx_idle;	1109	--cctx_idle;
719	cctx = cctx_first;	1110
720	cctx_first = cctx->next;	1111	if (expect_true (!CCTX_EXPIRED (cctx)))
721	}	1112	return cctx;
722	else	1113
723	{	1114	cctx_destroy (cctx);
724	++cctx_count;
725	cctx = cctx_new ();
726	PL_op = PL_op->op_next;
727	}	1115	}
728		1116
729	return cctx;	1117	return cctx_new ();
730	}	1118	}
731		1119
732	static void	1120	static void
733	cctx_put (coro_cctx *cctx)	1121	cctx_put (coro_cctx *cctx)
734	{	1122	{
		1123	/* free another cctx if overlimit */
		1124	if (expect_false (cctx_idle >= MAX_IDLE_CCTX))
		1125	{
		1126	coro_cctx *first = cctx_first;
		1127	cctx_first = first->next;
		1128	--cctx_idle;
		1129
		1130	cctx_destroy (first);
		1131	}
		1132
735	++cctx_idle;	1133	++cctx_idle;
736	cctx->next = cctx_first;	1134	cctx->next = cctx_first;
737	cctx_first = cctx;	1135	cctx_first = cctx;
738	}	1136	}
739		1137
740	/* never call directly, always through the coro_state_transfer global variable */	1138	/ coroutine switching ***************************************************/
		1139
		1140	static void
		1141	transfer_check (pTHX_ struct coro prev, struct coro next)
		1142	{
		1143	if (expect_true (prev != next))
		1144	{
		1145	if (expect_false (!(prev->flags & (CF_RUNNING \| CF_NEW))))
		1146	croak ("Coro::State::transfer called with non-running/new prev Coro::State, but can only transfer from running or new states");
		1147
		1148	if (expect_false (next->flags & CF_RUNNING))
		1149	croak ("Coro::State::transfer called with running next Coro::State, but can only transfer to inactive states");
		1150
		1151	if (expect_false (next->flags & CF_DESTROYED))
		1152	croak ("Coro::State::transfer called with destroyed next Coro::State, but can only transfer to inactive states");
		1153
		1154	#if !PERL_VERSION_ATLEAST (5,10,0)
		1155	if (expect_false (PL_lex_state != LEX_NOTPARSING))
		1156	croak ("Coro::State::transfer called while parsing, but this is not supported in your perl version");
		1157	#endif
		1158	}
		1159	}
		1160
		1161	/* always use the TRANSFER macro */
741	static void NOINLINE	1162	static void NOINLINE
742	transfer (struct coro prev, struct coro next, int flags)	1163	transfer (pTHX_ struct coro prev, struct coro next, int force_cctx)
743	{	1164	{
744	dSTACKLEVEL;	1165	dSTACKLEVEL;
		1166	static volatile int has_throw;
745		1167
746	/* sometimes transfer is only called to set idle_sp */	1168	/* sometimes transfer is only called to set idle_sp */
747	if (flags == TRANSFER_SET_STACKLEVEL)	1169	if (expect_false (!next))
		1170	{
748	((coro_cctx *)prev)->idle_sp = STACKLEVEL;	1171	((coro_cctx *)prev)->idle_sp = STACKLEVEL;
		1172	assert (((coro_cctx )prev)->idle_te = PL_top_env); / just for the side-effect when asserts are enabled */
		1173	}
749	else if (prev != next)	1174	else if (expect_true (prev != next))
750	{	1175	{
751	coro_cctx *prev__cctx;	1176	coro_cctx *prev__cctx;
752		1177
		1178	if (expect_false (prev->flags & CF_NEW))
		1179	{
		1180	/* create a new empty context */
		1181	Newz (0, prev->cctx, 1, coro_cctx);
		1182	prev->flags &= ~CF_NEW;
		1183	prev->flags \|= CF_RUNNING;
		1184	}
		1185
		1186	prev->flags &= ~CF_RUNNING;
		1187	next->flags \|= CF_RUNNING;
		1188
753	LOCK;	1189	LOCK;
754		1190
755	if (next->mainstack)	1191	/* first get rid of the old state */
		1192	save_perl (aTHX_ prev);
		1193
		1194	if (expect_false (next->flags & CF_NEW))
756	{	1195	{
757	/* coroutine already started */	1196	/* need to start coroutine */
758	SAVE (prev, flags);	1197	next->flags &= ~CF_NEW;
759	LOAD (next);	1198	/* setup coroutine call */
		1199	coro_setup (aTHX_ next);
760	}	1200	}
761	else	1201	else
		1202	load_perl (aTHX_ next);
		1203
		1204	prev__cctx = prev->cctx;
		1205
		1206	/* possibly "free" the cctx */
		1207	if (expect_true (
		1208	prev__cctx->idle_sp == STACKLEVEL
		1209	&& !(prev__cctx->flags & CC_TRACE)
		1210	&& !force_cctx
		1211	))
762	{	1212	{
763	/* need to start coroutine */	1213	/* I assume that STACKLEVEL is a stronger indicator than PL_top_env changes */
764	/* first get rid of the old state */	1214	assert (("ERROR: current top_env must equal previous top_env", PL_top_env == prev__cctx->idle_te));
765	SAVE (prev, -1);	1215
766	/* setup coroutine call */
767	setup_coro (next);
768	/* need a stack */
769	next->cctx = 0;	1216	prev->cctx = 0;
		1217
		1218	/* if the cctx is about to be destroyed we need to make sure we won't see it in cctx_get */
		1219	/* without this the next cctx_get might destroy the prev__cctx while still in use */
		1220	if (expect_false (CCTX_EXPIRED (prev__cctx)))
		1221	if (!next->cctx)
		1222	next->cctx = cctx_get (aTHX);
		1223
		1224	cctx_put (prev__cctx);
770	}	1225	}
771		1226
772	if (!prev->cctx)	1227	++next->usecount;
773	/* create a new empty context */
774	Newz (0, prev->cctx, 1, coro_cctx);
775		1228
776	prev__cctx = prev->cctx;
777
778	/* possibly "free" the cctx */
779	if (prev__cctx->idle_sp == STACKLEVEL)
780	{
781	cctx_put (prev__cctx);
782	prev->cctx = 0;
783	}
784
785	if (!next->cctx)	1229	if (expect_true (!next->cctx))
786	next->cctx = cctx_get ();	1230	next->cctx = cctx_get (aTHX);
787		1231
		1232	has_throw = !!next->throw;
		1233
788	if (prev__cctx != next->cctx)	1234	if (expect_false (prev__cctx != next->cctx))
789	{	1235	{
790	prev__cctx->top_env = PL_top_env;	1236	prev__cctx->top_env = PL_top_env;
791	PL_top_env = next->cctx->top_env;	1237	PL_top_env = next->cctx->top_env;
792	coro_transfer (&prev__cctx->cctx, &next->cctx->cctx);	1238	coro_transfer (&prev__cctx->cctx, &next->cctx->cctx);
793	}	1239	}
794		1240
795	free_coro_mortal ();	1241	free_coro_mortal (aTHX);
796
797	UNLOCK;	1242	UNLOCK;
		1243
		1244	if (expect_false (has_throw))
		1245	{
		1246	struct coro *coro = SvSTATE (coro_current);
		1247
		1248	if (coro->throw)
		1249	{
		1250	SV *exception = coro->throw;
		1251	coro->throw = 0;
		1252	sv_setsv (ERRSV, exception);
		1253	croak (0);
		1254	}
		1255	}
798	}	1256	}
799	}	1257	}
800		1258
801	struct transfer_args	1259	struct transfer_args
802	{	1260	{
803	struct coro prev, next;	1261	struct coro prev, next;
804	int flags;
805	};	1262	};
806		1263
		1264	#define TRANSFER(ta, force_cctx) transfer (aTHX_ (ta).prev, (ta).next, (force_cctx))
807	#define TRANSFER(ta) transfer ((ta).prev, (ta).next, (ta).flags)	1265	#define TRANSFER_CHECK(ta) transfer_check (aTHX_ (ta).prev, (ta).next)
808		1266
		1267	/ high level stuff ******************************************************/
		1268
809	static void	1269	static int
810	coro_state_destroy (struct coro *coro)	1270	coro_state_destroy (pTHX_ struct coro *coro)
811	{	1271	{
812	if (coro->refcnt--)	1272	if (coro->flags & CF_DESTROYED)
813	return;	1273	return 0;
		1274
		1275	coro->flags \|= CF_DESTROYED;
		1276
		1277	if (coro->flags & CF_READY)
		1278	{
		1279	/* reduce nready, as destroying a ready coro effectively unreadies it */
		1280	/* alternative: look through all ready queues and remove the coro */
		1281	LOCK;
		1282	--coro_nready;
		1283	UNLOCK;
		1284	}
		1285	else
		1286	coro->flags \|= CF_READY; /* make sure it is NOT put into the readyqueue */
814		1287
815	if (coro->mainstack && coro->mainstack != main_mainstack)	1288	if (coro->mainstack && coro->mainstack != main_mainstack)
816	{	1289	{
817	struct coro temp;	1290	struct coro temp;
818		1291
819	SAVE ((&temp), TRANSFER_SAVE_ALL);	1292	if (coro->flags & CF_RUNNING)
820	LOAD (coro);	1293	croak ("FATAL: tried to destroy currently running coroutine");
821		1294
822	coro_destroy_stacks ();	1295	save_perl (aTHX_ &temp);
		1296	load_perl (aTHX_ coro);
823		1297
824	LOAD ((&temp)); /* this will get rid of defsv etc.. */	1298	coro_destroy (aTHX_ coro);
825		1299
		1300	load_perl (aTHX_ &temp);
		1301
826	coro->mainstack = 0;	1302	coro->slot = 0;
827	}	1303	}
828		1304
829	cctx_free (coro->cctx);	1305	cctx_destroy (coro->cctx);
830	SvREFCNT_dec (coro->args);	1306	SvREFCNT_dec (coro->args);
831	Safefree (coro);	1307
		1308	if (coro->next) coro->next->prev = coro->prev;
		1309	if (coro->prev) coro->prev->next = coro->next;
		1310	if (coro == coro_first) coro_first = coro->next;
		1311
		1312	return 1;
832	}	1313	}
833		1314
834	static int	1315	static int
835	coro_state_clear (pTHX_ SV sv, MAGIC mg)	1316	coro_state_free (pTHX_ SV sv, MAGIC mg)
836	{	1317	{
837	struct coro coro = (struct coro )mg->mg_ptr;	1318	struct coro coro = (struct coro )mg->mg_ptr;
838	mg->mg_ptr = 0;	1319	mg->mg_ptr = 0;
839		1320
		1321	coro->hv = 0;
		1322
		1323	if (--coro->refcnt < 0)
		1324	{
840	coro_state_destroy (coro);	1325	coro_state_destroy (aTHX_ coro);
		1326	Safefree (coro);
		1327	}
841		1328
842	return 0;	1329	return 0;
843	}	1330	}
844		1331
845	static int	1332	static int
…		…
852	return 0;	1339	return 0;
853	}	1340	}
854		1341
855	static MGVTBL coro_state_vtbl = {	1342	static MGVTBL coro_state_vtbl = {
856	0, 0, 0, 0,	1343	0, 0, 0, 0,
857	coro_state_clear,	1344	coro_state_free,
858	0,	1345	0,
859	#ifdef MGf_DUP	1346	#ifdef MGf_DUP
860	coro_state_dup,	1347	coro_state_dup,
861	#else	1348	#else
862	# define MGf_DUP 0	1349	# define MGf_DUP 0
863	#endif	1350	#endif
864	};	1351	};
865		1352
866	static struct coro *
867	SvSTATE (SV *coro)
868	{
869	HV *stash;
870	MAGIC *mg;
871
872	if (SvROK (coro))
873	coro = SvRV (coro);
874
875	stash = SvSTASH (coro);
876	if (stash != coro_stash && stash != coro_state_stash)
877	{
878	/* very slow, but rare, check */
879	if (!sv_derived_from (sv_2mortal (newRV_inc (coro)), "Coro::State"))
880	croak ("Coro::State object required");
881	}
882
883	mg = SvMAGIC (coro);
884	assert (mg->mg_type == PERL_MAGIC_ext);
885	return (struct coro *)mg->mg_ptr;
886	}
887
888	static void	1353	static void
889	prepare_transfer (struct transfer_args ta, SV prev, SV *next, int flags)	1354	prepare_transfer (pTHX_ struct transfer_args ta, SV prev_sv, SV *next_sv)
890	{	1355	{
891	ta->prev = SvSTATE (prev);	1356	ta->prev = SvSTATE (prev_sv);
892	ta->next = SvSTATE (next);	1357	ta->next = SvSTATE (next_sv);
893	ta->flags = flags;	1358	TRANSFER_CHECK (*ta);
894	}	1359	}
895		1360
896	static void	1361	static void
897	api_transfer (SV prev, SV next, int flags)	1362	api_transfer (SV prev_sv, SV next_sv)
898	{	1363	{
899	dTHX;	1364	dTHX;
900	struct transfer_args ta;	1365	struct transfer_args ta;
901		1366
902	prepare_transfer (&ta, prev, next, flags);	1367	prepare_transfer (aTHX_ &ta, prev_sv, next_sv);
903	TRANSFER (ta);	1368	TRANSFER (ta, 1);
904	}	1369	}
905		1370
906	/ Coro ******************************************************************/	1371	/ Coro ******************************************************************/
907		1372
908	#define PRIO_MAX 3
909	#define PRIO_HIGH 1
910	#define PRIO_NORMAL 0
911	#define PRIO_LOW -1
912	#define PRIO_IDLE -3
913	#define PRIO_MIN -4
914
915	/* for Coro.pm */
916	static GV coro_current, coro_idle;
917	static AV *coro_ready [PRIO_MAX-PRIO_MIN+1];
918	static int coro_nready;
919
920	static void	1373	static void
921	coro_enq (SV *sv)	1374	coro_enq (pTHX_ SV *coro_sv)
		1375	{
		1376	av_push (coro_ready [SvSTATE (coro_sv)->prio - PRIO_MIN], coro_sv);
		1377	}
		1378
		1379	static SV *
		1380	coro_deq (pTHX)
922	{	1381	{
923	int prio;	1382	int prio;
924		1383
925	if (SvTYPE (sv) != SVt_PVHV)
926	croak ("Coro::ready tried to enqueue something that is not a coroutine");
927
928	prio = SvSTATE (sv)->prio;
929
930	av_push (coro_ready [prio - PRIO_MIN], sv);
931	coro_nready++;
932	}
933
934	static SV *
935	coro_deq (int min_prio)
936	{
937	int prio = PRIO_MAX - PRIO_MIN;
938
939	min_prio -= PRIO_MIN;
940	if (min_prio < 0)
941	min_prio = 0;
942
943	for (prio = PRIO_MAX - PRIO_MIN + 1; --prio >= min_prio; )	1384	for (prio = PRIO_MAX - PRIO_MIN + 1; --prio >= 0; )
944	if (AvFILLp (coro_ready [prio]) >= 0)	1385	if (AvFILLp (coro_ready [prio]) >= 0)
945	{
946	coro_nready--;
947	return av_shift (coro_ready [prio]);	1386	return av_shift (coro_ready [prio]);
948	}
949		1387
950	return 0;	1388	return 0;
951	}	1389	}
952		1390
		1391	static int
		1392	api_ready (SV *coro_sv)
		1393	{
		1394	dTHX;
		1395	struct coro *coro;
		1396	SV *sv_hook;
		1397	void (*xs_hook)(void);
		1398
		1399	if (SvROK (coro_sv))
		1400	coro_sv = SvRV (coro_sv);
		1401
		1402	coro = SvSTATE (coro_sv);
		1403
		1404	if (coro->flags & CF_READY)
		1405	return 0;
		1406
		1407	coro->flags \|= CF_READY;
		1408
		1409	LOCK;
		1410
		1411	sv_hook = coro_nready ? 0 : coro_readyhook;
		1412	xs_hook = coro_nready ? 0 : coroapi.readyhook;
		1413
		1414	coro_enq (aTHX_ SvREFCNT_inc (coro_sv));
		1415	++coro_nready;
		1416
		1417	UNLOCK;
		1418
		1419	if (sv_hook)
		1420	{
		1421	dSP;
		1422
		1423	ENTER;
		1424	SAVETMPS;
		1425
		1426	PUSHMARK (SP);
		1427	PUTBACK;
		1428	call_sv (sv_hook, G_DISCARD);
		1429	SPAGAIN;
		1430
		1431	FREETMPS;
		1432	LEAVE;
		1433	}
		1434
		1435	if (xs_hook)
		1436	xs_hook ();
		1437
		1438	return 1;
		1439	}
		1440
		1441	static int
		1442	api_is_ready (SV *coro_sv)
		1443	{
		1444	dTHX;
		1445	return !!(SvSTATE (coro_sv)->flags & CF_READY);
		1446	}
		1447
953	static void	1448	static void
954	api_ready (SV *coro)	1449	prepare_schedule (pTHX_ struct transfer_args *ta)
955	{	1450	{
956	dTHX;	1451	SV prev_sv, next_sv;
957		1452
958	if (SvROK (coro))	1453	for (;;)
959	coro = SvRV (coro);	1454	{
		1455	LOCK;
		1456	next_sv = coro_deq (aTHX);
		1457
		1458	/* nothing to schedule: call the idle handler */
		1459	if (expect_false (!next_sv))
		1460	{
		1461	dSP;
		1462	UNLOCK;
		1463
		1464	ENTER;
		1465	SAVETMPS;
		1466
		1467	PUSHMARK (SP);
		1468	PUTBACK;
		1469	call_sv (get_sv ("Coro::idle", FALSE), G_DISCARD);
		1470	SPAGAIN;
		1471
		1472	FREETMPS;
		1473	LEAVE;
		1474	continue;
		1475	}
		1476
		1477	ta->next = SvSTATE (next_sv);
		1478
		1479	/* cannot transfer to destroyed coros, skip and look for next */
		1480	if (expect_false (ta->next->flags & CF_DESTROYED))
		1481	{
		1482	UNLOCK;
		1483	SvREFCNT_dec (next_sv);
		1484	/* coro_nready is already taken care of by destroy */
		1485	continue;
		1486	}
		1487
		1488	--coro_nready;
		1489	UNLOCK;
		1490	break;
		1491	}
		1492
		1493	/* free this only after the transfer */
		1494	prev_sv = SvRV (coro_current);
		1495	ta->prev = SvSTATE (prev_sv);
		1496	TRANSFER_CHECK (*ta);
		1497	assert (ta->next->flags & CF_READY);
		1498	ta->next->flags &= ~CF_READY;
		1499	SvRV_set (coro_current, next_sv);
960		1500
961	LOCK;	1501	LOCK;
962	coro_enq (SvREFCNT_inc (coro));	1502	free_coro_mortal (aTHX);
		1503	coro_mortal = prev_sv;
963	UNLOCK;	1504	UNLOCK;
964	}	1505	}
965		1506
966	static void	1507	static void
967	prepare_schedule (struct transfer_args *ta)
968	{
969	SV current, prev, *next;
970
971	current = GvSV (coro_current);
972
973	for (;;)
974	{
975	LOCK;
976	next = coro_deq (PRIO_MIN);
977	UNLOCK;
978
979	if (next)
980	break;
981
982	{
983	dSP;
984
985	ENTER;
986	SAVETMPS;
987
988	PUSHMARK (SP);
989	PUTBACK;
990	call_sv (GvSV (coro_idle), G_DISCARD);
991
992	FREETMPS;
993	LEAVE;
994	}
995	}
996
997	prev = SvRV (current);
998	SvRV (current) = next;
999
1000	/* free this only after the transfer */
1001	LOCK;
1002	free_coro_mortal ();
1003	UNLOCK;
1004	coro_mortal = prev;
1005
1006	ta->prev = SvSTATE (prev);
1007	ta->next = SvSTATE (next);
1008	ta->flags = TRANSFER_SAVE_ALL;
1009	}
1010
1011	static void
1012	prepare_cede (struct transfer_args *ta)	1508	prepare_cede (pTHX_ struct transfer_args *ta)
1013	{	1509	{
1014	LOCK;	1510	api_ready (coro_current);
1015	coro_enq (SvREFCNT_inc (SvRV (GvSV (coro_current))));
1016	UNLOCK;
1017
1018	prepare_schedule (ta);	1511	prepare_schedule (aTHX_ ta);
		1512	}
		1513
		1514	static int
		1515	prepare_cede_notself (pTHX_ struct transfer_args *ta)
		1516	{
		1517	if (coro_nready)
		1518	{
		1519	SV *prev = SvRV (coro_current);
		1520	prepare_schedule (aTHX_ ta);
		1521	api_ready (prev);
		1522	return 1;
		1523	}
		1524	else
		1525	return 0;
1019	}	1526	}
1020		1527
1021	static void	1528	static void
1022	api_schedule (void)	1529	api_schedule (void)
1023	{	1530	{
1024	dTHX;	1531	dTHX;
1025	struct transfer_args ta;	1532	struct transfer_args ta;
1026		1533
1027	prepare_schedule (&ta);	1534	prepare_schedule (aTHX_ &ta);
1028	TRANSFER (ta);	1535	TRANSFER (ta, 1);
1029	}	1536	}
1030		1537
1031	static void	1538	static int
1032	api_cede (void)	1539	api_cede (void)
1033	{	1540	{
1034	dTHX;	1541	dTHX;
1035	struct transfer_args ta;	1542	struct transfer_args ta;
1036		1543
1037	prepare_cede (&ta);	1544	prepare_cede (aTHX_ &ta);
		1545
		1546	if (expect_true (ta.prev != ta.next))
		1547	{
1038	TRANSFER (ta);	1548	TRANSFER (ta, 1);
		1549	return 1;
		1550	}
		1551	else
		1552	return 0;
1039	}	1553	}
1040		1554
		1555	static int
		1556	api_cede_notself (void)
		1557	{
		1558	dTHX;
		1559	struct transfer_args ta;
		1560
		1561	if (prepare_cede_notself (aTHX_ &ta))
		1562	{
		1563	TRANSFER (ta, 1);
		1564	return 1;
		1565	}
		1566	else
		1567	return 0;
		1568	}
		1569
		1570	static void
		1571	api_trace (SV *coro_sv, int flags)
		1572	{
		1573	dTHX;
		1574	struct coro *coro = SvSTATE (coro_sv);
		1575
		1576	if (flags & CC_TRACE)
		1577	{
		1578	if (!coro->cctx)
		1579	coro->cctx = cctx_new ();
		1580	else if (!(coro->cctx->flags & CC_TRACE))
		1581	croak ("cannot enable tracing on coroutine with custom stack");
		1582
		1583	coro->cctx->flags \|= CC_NOREUSE \| (flags & (CC_TRACE \| CC_TRACE_ALL));
		1584	}
		1585	else if (coro->cctx && coro->cctx->flags & CC_TRACE)
		1586	{
		1587	coro->cctx->flags &= ~(CC_TRACE \| CC_TRACE_ALL);
		1588
		1589	if (coro->flags & CF_RUNNING)
		1590	PL_runops = RUNOPS_DEFAULT;
		1591	else
		1592	coro->slot->runops = RUNOPS_DEFAULT;
		1593	}
		1594	}
		1595
1041	MODULE = Coro::State PACKAGE = Coro::State	1596	MODULE = Coro::State PACKAGE = Coro::State PREFIX = api_
1042		1597
1043	PROTOTYPES: DISABLE	1598	PROTOTYPES: DISABLE
1044		1599
1045	BOOT:	1600	BOOT:
1046	{	1601	{
1047	#ifdef USE_ITHREADS	1602	#ifdef USE_ITHREADS
1048	MUTEX_INIT (&coro_mutex);	1603	MUTEX_INIT (&coro_mutex);
1049	#endif	1604	#endif
1050	BOOT_PAGESIZE;	1605	BOOT_PAGESIZE;
1051		1606
		1607	irsgv = gv_fetchpv ("/" , GV_ADD\|GV_NOTQUAL, SVt_PV);
		1608	stdoutgv = gv_fetchpv ("STDOUT", GV_ADD\|GV_NOTQUAL, SVt_PVIO);
		1609
		1610	orig_sigelem_get = PL_vtbl_sigelem.svt_get;
		1611	PL_vtbl_sigelem.svt_get = coro_sigelem_get;
		1612	orig_sigelem_set = PL_vtbl_sigelem.svt_set;
		1613	PL_vtbl_sigelem.svt_set = coro_sigelem_set;
		1614
		1615	hv_sig = coro_get_hv (aTHX_ "SIG", TRUE);
		1616	rv_diehook = newRV_inc ((SV *)gv_fetchpv ("Coro::State::diehook" , 0, SVt_PVCV));
		1617	rv_warnhook = newRV_inc ((SV *)gv_fetchpv ("Coro::State::warnhook", 0, SVt_PVCV));
		1618
1052	coro_state_stash = gv_stashpv ("Coro::State", TRUE);	1619	coro_state_stash = gv_stashpv ("Coro::State", TRUE);
1053		1620
1054	newCONSTSUB (coro_state_stash, "SAVE_DEFAV", newSViv (TRANSFER_SAVE_DEFAV));	1621	newCONSTSUB (coro_state_stash, "CC_TRACE" , newSViv (CC_TRACE));
1055	newCONSTSUB (coro_state_stash, "SAVE_DEFSV", newSViv (TRANSFER_SAVE_DEFSV));	1622	newCONSTSUB (coro_state_stash, "CC_TRACE_SUB" , newSViv (CC_TRACE_SUB));
1056	newCONSTSUB (coro_state_stash, "SAVE_ERRSV", newSViv (TRANSFER_SAVE_ERRSV));	1623	newCONSTSUB (coro_state_stash, "CC_TRACE_LINE", newSViv (CC_TRACE_LINE));
		1624	newCONSTSUB (coro_state_stash, "CC_TRACE_ALL" , newSViv (CC_TRACE_ALL));
1057		1625
1058	main_mainstack = PL_mainstack;	1626	main_mainstack = PL_mainstack;
		1627	main_top_env = PL_top_env;
1059		1628
		1629	while (main_top_env->je_prev)
		1630	main_top_env = main_top_env->je_prev;
		1631
1060	coroapi.ver = CORO_API_VERSION;	1632	coroapi.ver = CORO_API_VERSION;
		1633	coroapi.rev = CORO_API_REVISION;
1061	coroapi.transfer = api_transfer;	1634	coroapi.transfer = api_transfer;
1062		1635
1063	assert (("PRIO_NORMAL must be 0", !PRIO_NORMAL));	1636	assert (("PRIO_NORMAL must be 0", !PRIO_NORMAL));
1064	}	1637	}
1065		1638
1066	SV *	1639	SV *
1067	new (char *klass, ...)	1640	new (char *klass, ...)
1068	CODE:	1641	CODE:
1069	{	1642	{
1070	struct coro *coro;	1643	struct coro *coro;
		1644	MAGIC *mg;
1071	HV *hv;	1645	HV *hv;
1072	int i;	1646	int i;
1073		1647
1074	Newz (0, coro, 1, struct coro);	1648	Newz (0, coro, 1, struct coro);
1075	coro->args = newAV ();	1649	coro->args = newAV ();
		1650	coro->flags = CF_NEW;
1076		1651
		1652	if (coro_first) coro_first->prev = coro;
		1653	coro->next = coro_first;
		1654	coro_first = coro;
		1655
1077	hv = newHV ();	1656	coro->hv = hv = newHV ();
1078	sv_magicext ((SV )hv, 0, PERL_MAGIC_ext, &coro_state_vtbl, (char )coro, 0)->mg_flags \|= MGf_DUP;	1657	mg = sv_magicext ((SV )hv, 0, CORO_MAGIC_type_state, &coro_state_vtbl, (char )coro, 0);
		1658	mg->mg_flags \|= MGf_DUP;
1079	RETVAL = sv_bless (newRV_noinc ((SV *)hv), gv_stashpv (klass, 1));	1659	RETVAL = sv_bless (newRV_noinc ((SV *)hv), gv_stashpv (klass, 1));
1080		1660
		1661	av_extend (coro->args, items - 1);
1081	for (i = 1; i < items; i++)	1662	for (i = 1; i < items; i++)
1082	av_push (coro->args, newSVsv (ST (i)));	1663	av_push (coro->args, newSVsv (ST (i)));
1083	}	1664	}
1084	OUTPUT:	1665	OUTPUT:
1085	RETVAL	1666	RETVAL
1086		1667
		1668	# these not obviously related functions are all rolled into the same xs
		1669	# function to increase chances that they all will call transfer with the same
		1670	# stack offset
1087	void	1671	void
1088	_set_stacklevel (...)	1672	_set_stacklevel (...)
1089	ALIAS:	1673	ALIAS:
1090	Coro::State::transfer = 1	1674	Coro::State::transfer = 1
1091	Coro::schedule = 2	1675	Coro::schedule = 2
1092	Coro::cede = 3	1676	Coro::cede = 3
1093	Coro::Cont::yield = 4	1677	Coro::cede_notself = 4
1094	CODE:	1678	CODE:
1095	{	1679	{
1096	struct transfer_args ta;	1680	struct transfer_args ta;
1097		1681
		1682	PUTBACK;
1098	switch (ix)	1683	switch (ix)
1099	{	1684	{
1100	case 0:	1685	case 0:
1101	ta.prev = (struct coro )INT2PTR (coro_cctx , SvIV (ST (0)));	1686	ta.prev = (struct coro )INT2PTR (coro_cctx , SvIV (ST (0)));
1102	ta.next = 0;	1687	ta.next = 0;
1103	ta.flags = TRANSFER_SET_STACKLEVEL;
1104	break;	1688	break;
1105		1689
1106	case 1:	1690	case 1:
1107	if (items != 3)	1691	if (items != 2)
1108	croak ("Coro::State::transfer(prev,next,flags) expects three arguments, not %d", items);	1692	croak ("Coro::State::transfer (prev,next) expects two arguments, not %d", items);
1109		1693
1110	prepare_transfer (&ta, ST (0), ST (1), SvIV (ST (2)));	1694	prepare_transfer (aTHX_ &ta, ST (0), ST (1));
1111	break;	1695	break;
1112		1696
1113	case 2:	1697	case 2:
1114	prepare_schedule (&ta);	1698	prepare_schedule (aTHX_ &ta);
1115	break;	1699	break;
1116		1700
1117	case 3:	1701	case 3:
1118	prepare_cede (&ta);	1702	prepare_cede (aTHX_ &ta);
1119	break;	1703	break;
1120		1704
1121	case 4:	1705	case 4:
1122	{	1706	if (!prepare_cede_notself (aTHX_ &ta))
1123	SV *yieldstack;	1707	XSRETURN_EMPTY;
1124	SV *sv;
1125	AV *defav = GvAV (PL_defgv);
1126		1708
1127	yieldstack = *hv_fetch (
1128	(HV *)SvRV (GvSV (coro_current)),
1129	"yieldstack", sizeof ("yieldstack") - 1,
1130	0
1131	);
1132
1133	/* set up @_ -- ugly */
1134	av_clear (defav);
1135	av_fill (defav, items - 1);
1136	while (items--)
1137	av_store (defav, items, SvREFCNT_inc (ST(items)));
1138
1139	sv = av_pop ((AV *)SvRV (yieldstack));
1140	ta.prev = SvSTATE (av_fetch ((AV )SvRV (sv), 0, 0));
1141	ta.next = SvSTATE (av_fetch ((AV )SvRV (sv), 1, 0));
1142	ta.flags = 0;
1143	SvREFCNT_dec (sv);
1144	}
1145	break;	1709	break;
1146
1147	}	1710	}
		1711	SPAGAIN;
1148		1712
		1713	BARRIER;
		1714	PUTBACK;
1149	TRANSFER (ta);	1715	TRANSFER (ta, 0);
		1716	SPAGAIN; /* might be the sp of a different coroutine now */
		1717	/* be extra careful not to ever do anything after TRANSFER */
1150	}	1718	}
		1719
		1720	bool
		1721	_destroy (SV *coro_sv)
		1722	CODE:
		1723	RETVAL = coro_state_destroy (aTHX_ SvSTATE (coro_sv));
		1724	OUTPUT:
		1725	RETVAL
1151		1726
1152	void	1727	void
1153	_clone_state_from (SV dst, SV src)
1154	CODE:
1155	{
1156	struct coro *coro_src = SvSTATE (src);
1157
1158	sv_unmagic (SvRV (dst), PERL_MAGIC_ext);
1159
1160	++coro_src->refcnt;
1161	sv_magicext (SvRV (dst), 0, PERL_MAGIC_ext, &coro_state_vtbl, (char *)coro_src, 0)->mg_flags \|= MGf_DUP;
1162	}
1163
1164	void
1165	_exit (code)	1728	_exit (int code)
1166	int code
1167	PROTOTYPE: $	1729	PROTOTYPE: $
1168	CODE:	1730	CODE:
1169	_exit (code);	1731	_exit (code);
		1732
		1733	int
		1734	cctx_stacksize (int new_stacksize = 0)
		1735	CODE:
		1736	RETVAL = coro_stacksize;
		1737	if (new_stacksize)
		1738	coro_stacksize = new_stacksize;
		1739	OUTPUT:
		1740	RETVAL
1170		1741
1171	int	1742	int
1172	cctx_count ()	1743	cctx_count ()
1173	CODE:	1744	CODE:
1174	RETVAL = cctx_count;	1745	RETVAL = cctx_count;
…		…
1180	CODE:	1751	CODE:
1181	RETVAL = cctx_idle;	1752	RETVAL = cctx_idle;
1182	OUTPUT:	1753	OUTPUT:
1183	RETVAL	1754	RETVAL
1184		1755
		1756	void
		1757	list ()
		1758	PPCODE:
		1759	{
		1760	struct coro *coro;
		1761	for (coro = coro_first; coro; coro = coro->next)
		1762	if (coro->hv)
		1763	XPUSHs (sv_2mortal (newRV_inc ((SV *)coro->hv)));
		1764	}
		1765
		1766	void
		1767	call (Coro::State coro, SV *coderef)
		1768	ALIAS:
		1769	eval = 1
		1770	CODE:
		1771	{
		1772	if (coro->mainstack)
		1773	{
		1774	struct coro temp;
		1775
		1776	if (!(coro->flags & CF_RUNNING))
		1777	{
		1778	PUTBACK;
		1779	save_perl (aTHX_ &temp);
		1780	load_perl (aTHX_ coro);
		1781	}
		1782
		1783	{
		1784	dSP;
		1785	ENTER;
		1786	SAVETMPS;
		1787	PUTBACK;
		1788	PUSHSTACK;
		1789	PUSHMARK (SP);
		1790
		1791	if (ix)
		1792	eval_sv (coderef, 0);
		1793	else
		1794	call_sv (coderef, G_KEEPERR \| G_EVAL \| G_VOID \| G_DISCARD);
		1795
		1796	POPSTACK;
		1797	SPAGAIN;
		1798	FREETMPS;
		1799	LEAVE;
		1800	PUTBACK;
		1801	}
		1802
		1803	if (!(coro->flags & CF_RUNNING))
		1804	{
		1805	save_perl (aTHX_ coro);
		1806	load_perl (aTHX_ &temp);
		1807	SPAGAIN;
		1808	}
		1809	}
		1810	}
		1811
		1812	SV *
		1813	is_ready (Coro::State coro)
		1814	PROTOTYPE: $
		1815	ALIAS:
		1816	is_ready = CF_READY
		1817	is_running = CF_RUNNING
		1818	is_new = CF_NEW
		1819	is_destroyed = CF_DESTROYED
		1820	CODE:
		1821	RETVAL = boolSV (coro->flags & ix);
		1822	OUTPUT:
		1823	RETVAL
		1824
		1825	void
		1826	api_trace (SV *coro, int flags = CC_TRACE \| CC_TRACE_SUB)
		1827
		1828	SV *
		1829	has_cctx (Coro::State coro)
		1830	PROTOTYPE: $
		1831	CODE:
		1832	RETVAL = boolSV (!!coro->cctx);
		1833	OUTPUT:
		1834	RETVAL
		1835
		1836	int
		1837	is_traced (Coro::State coro)
		1838	PROTOTYPE: $
		1839	CODE:
		1840	RETVAL = (coro->cctx ? coro->cctx->flags : 0) & CC_TRACE_ALL;
		1841	OUTPUT:
		1842	RETVAL
		1843
		1844	IV
		1845	rss (Coro::State coro)
		1846	PROTOTYPE: $
		1847	ALIAS:
		1848	usecount = 1
		1849	CODE:
		1850	switch (ix)
		1851	{
		1852	case 0: RETVAL = coro_rss (aTHX_ coro); break;
		1853	case 1: RETVAL = coro->usecount; break;
		1854	}
		1855	OUTPUT:
		1856	RETVAL
		1857
		1858	void
		1859	force_cctx ()
		1860	CODE:
		1861	struct coro *coro = SvSTATE (coro_current);
		1862	coro->cctx->idle_sp = 0;
		1863
1185	MODULE = Coro::State PACKAGE = Coro	1864	MODULE = Coro::State PACKAGE = Coro
1186		1865
1187	BOOT:	1866	BOOT:
1188	{	1867	{
1189	int i;	1868	int i;
1190		1869
		1870	av_async_pool = coro_get_av (aTHX_ "Coro::async_pool", TRUE);
		1871	sv_pool_rss = coro_get_sv (aTHX_ "Coro::POOL_RSS" , TRUE);
		1872	sv_pool_size = coro_get_sv (aTHX_ "Coro::POOL_SIZE" , TRUE);
		1873
		1874	coro_current = coro_get_sv (aTHX_ "Coro::current", FALSE);
		1875	SvREADONLY_on (coro_current);
		1876
1191	coro_stash = gv_stashpv ("Coro", TRUE);	1877	coro_stash = gv_stashpv ("Coro", TRUE);
1192		1878
1193	newCONSTSUB (coro_stash, "PRIO_MAX", newSViv (PRIO_MAX));	1879	newCONSTSUB (coro_stash, "PRIO_MAX", newSViv (PRIO_MAX));
1194	newCONSTSUB (coro_stash, "PRIO_HIGH", newSViv (PRIO_HIGH));	1880	newCONSTSUB (coro_stash, "PRIO_HIGH", newSViv (PRIO_HIGH));
1195	newCONSTSUB (coro_stash, "PRIO_NORMAL", newSViv (PRIO_NORMAL));	1881	newCONSTSUB (coro_stash, "PRIO_NORMAL", newSViv (PRIO_NORMAL));
1196	newCONSTSUB (coro_stash, "PRIO_LOW", newSViv (PRIO_LOW));	1882	newCONSTSUB (coro_stash, "PRIO_LOW", newSViv (PRIO_LOW));
1197	newCONSTSUB (coro_stash, "PRIO_IDLE", newSViv (PRIO_IDLE));	1883	newCONSTSUB (coro_stash, "PRIO_IDLE", newSViv (PRIO_IDLE));
1198	newCONSTSUB (coro_stash, "PRIO_MIN", newSViv (PRIO_MIN));	1884	newCONSTSUB (coro_stash, "PRIO_MIN", newSViv (PRIO_MIN));
1199		1885
1200	coro_current = gv_fetchpv ("Coro::current", TRUE, SVt_PV);
1201	coro_idle = gv_fetchpv ("Coro::idle" , TRUE, SVt_PV);
1202
1203	for (i = PRIO_MAX - PRIO_MIN + 1; i--; )	1886	for (i = PRIO_MAX - PRIO_MIN + 1; i--; )
1204	coro_ready[i] = newAV ();	1887	coro_ready[i] = newAV ();
1205		1888
1206	{	1889	{
1207	SV *sv = perl_get_sv("Coro::API", 1);	1890	SV *sv = perl_get_sv ("Coro::API", TRUE);
		1891	perl_get_sv ("Coro::API", TRUE); /* silence 5.10 warning */
1208		1892
1209	coroapi.schedule = api_schedule;	1893	coroapi.schedule = api_schedule;
1210	coroapi.cede = api_cede;	1894	coroapi.cede = api_cede;
		1895	coroapi.cede_notself = api_cede_notself;
1211	coroapi.ready = api_ready;	1896	coroapi.ready = api_ready;
		1897	coroapi.is_ready = api_is_ready;
1212	coroapi.nready = &coro_nready;	1898	coroapi.nready = &coro_nready;
1213	coroapi.current = coro_current;	1899	coroapi.current = coro_current;
1214		1900
1215	GCoroAPI = &coroapi;	1901	GCoroAPI = &coroapi;
1216	sv_setiv (sv, (IV)&coroapi);	1902	sv_setiv (sv, (IV)&coroapi);
1217	SvREADONLY_on (sv);	1903	SvREADONLY_on (sv);
1218	}	1904	}
1219	}	1905	}
		1906
		1907	void
		1908	_set_current (SV *current)
		1909	PROTOTYPE: $
		1910	CODE:
		1911	SvREFCNT_dec (SvRV (coro_current));
		1912	SvRV_set (coro_current, SvREFCNT_inc (SvRV (current)));
		1913
		1914	void
		1915	_set_readyhook (SV *hook)
		1916	PROTOTYPE: $
		1917	CODE:
		1918	LOCK;
		1919	SvREFCNT_dec (coro_readyhook);
		1920	coro_readyhook = SvOK (hook) ? newSVsv (hook) : 0;
		1921	UNLOCK;
1220		1922
1221	int	1923	int
1222	prio (Coro::State coro, int newprio = 0)	1924	prio (Coro::State coro, int newprio = 0)
1223	ALIAS:	1925	ALIAS:
1224	nice = 1	1926	nice = 1
…		…
1227	RETVAL = coro->prio;	1929	RETVAL = coro->prio;
1228		1930
1229	if (items > 1)	1931	if (items > 1)
1230	{	1932	{
1231	if (ix)	1933	if (ix)
1232	newprio += coro->prio;	1934	newprio = coro->prio - newprio;
1233		1935
1234	if (newprio < PRIO_MIN) newprio = PRIO_MIN;	1936	if (newprio < PRIO_MIN) newprio = PRIO_MIN;
1235	if (newprio > PRIO_MAX) newprio = PRIO_MAX;	1937	if (newprio > PRIO_MAX) newprio = PRIO_MAX;
1236		1938
1237	coro->prio = newprio;	1939	coro->prio = newprio;
1238	}	1940	}
1239	}	1941	}
		1942	OUTPUT:
		1943	RETVAL
1240		1944
1241	void	1945	SV *
1242	ready (SV *self)	1946	ready (SV *self)
1243	PROTOTYPE: $	1947	PROTOTYPE: $
1244	CODE:	1948	CODE:
1245	api_ready (self);	1949	RETVAL = boolSV (api_ready (self));
		1950	OUTPUT:
		1951	RETVAL
1246		1952
1247	int	1953	int
1248	nready (...)	1954	nready (...)
1249	PROTOTYPE:	1955	PROTOTYPE:
1250	CODE:	1956	CODE:
1251	RETVAL = coro_nready;	1957	RETVAL = coro_nready;
1252	OUTPUT:	1958	OUTPUT:
1253	RETVAL	1959	RETVAL
1254		1960
		1961	void
		1962	throw (Coro::State self, SV *throw = &PL_sv_undef)
		1963	PROTOTYPE: $;$
		1964	CODE:
		1965	SvREFCNT_dec (self->throw);
		1966	self->throw = SvOK (throw) ? newSVsv (throw) : 0;
		1967
		1968	void
		1969	swap_defsv (Coro::State self)
		1970	PROTOTYPE: $
		1971	ALIAS:
		1972	swap_defav = 1
		1973	CODE:
		1974	if (!self->slot)
		1975	croak ("cannot swap state with coroutine that has no saved state");
		1976	else
		1977	{
		1978	SV src = ix ? (SV )&GvAV (PL_defgv) : &GvSV (PL_defgv);
		1979	SV dst = ix ? (SV )&self->slot->defav : (SV **)&self->slot->defsv;
		1980
		1981	SV tmp = src; src = dst; *dst = tmp;
		1982	}
		1983
		1984	# for async_pool speedup
		1985	void
		1986	_pool_1 (SV *cb)
		1987	CODE:
		1988	{
		1989	struct coro *coro = SvSTATE (coro_current);
		1990	HV hv = (HV )SvRV (coro_current);
		1991	AV *defav = GvAV (PL_defgv);
		1992	SV *invoke = hv_delete (hv, "_invoke", sizeof ("_invoke") - 1, 0);
		1993	AV *invoke_av;
		1994	int i, len;
		1995
		1996	if (!invoke)
		1997	{
		1998	SvREFCNT_dec (PL_diehook); PL_diehook = 0;
		1999	croak ("\3async_pool terminate\2\n");
		2000	}
		2001
		2002	SvREFCNT_dec (coro->saved_deffh);
		2003	coro->saved_deffh = SvREFCNT_inc ((SV *)PL_defoutgv);
		2004
		2005	hv_store (hv, "desc", sizeof ("desc") - 1,
		2006	newSVpvn ("[async_pool]", sizeof ("[async_pool]") - 1), 0);
		2007
		2008	invoke_av = (AV *)SvRV (invoke);
		2009	len = av_len (invoke_av);
		2010
		2011	sv_setsv (cb, AvARRAY (invoke_av)[0]);
		2012
		2013	if (len > 0)
		2014	{
		2015	av_fill (defav, len - 1);
		2016	for (i = 0; i < len; ++i)
		2017	av_store (defav, i, SvREFCNT_inc (AvARRAY (invoke_av)[i + 1]));
		2018	}
		2019
		2020	SvREFCNT_dec (invoke);
		2021	}
		2022
		2023	void
		2024	_pool_2 (SV *cb)
		2025	CODE:
		2026	{
		2027	struct coro *coro = SvSTATE (coro_current);
		2028
		2029	sv_setsv (cb, &PL_sv_undef);
		2030
		2031	SvREFCNT_dec ((SV )PL_defoutgv); PL_defoutgv = (GV )coro->saved_deffh;
		2032	coro->saved_deffh = 0;
		2033
		2034	if (coro_rss (aTHX_ coro) > SvIV (sv_pool_rss)
		2035	\|\| av_len (av_async_pool) + 1 >= SvIV (sv_pool_size))
		2036	{
		2037	SvREFCNT_dec (PL_diehook); PL_diehook = 0;
		2038	croak ("\3async_pool terminate\2\n");
		2039	}
		2040
		2041	av_clear (GvAV (PL_defgv));
		2042	hv_store ((HV *)SvRV (coro_current), "desc", sizeof ("desc") - 1,
		2043	newSVpvn ("[async_pool idle]", sizeof ("[async_pool idle]") - 1), 0);
		2044
		2045	coro->prio = 0;
		2046
		2047	if (coro->cctx && (coro->cctx->flags & CC_TRACE))
		2048	api_trace (coro_current, 0);
		2049
		2050	av_push (av_async_pool, newSVsv (coro_current));
		2051	}
		2052
		2053
1255	MODULE = Coro::State PACKAGE = Coro::AIO	2054	MODULE = Coro::State PACKAGE = Coro::AIO
1256		2055
1257	SV *	2056	SV *
1258	_get_state ()	2057	_get_state ()
1259	CODE:	2058	CODE:
1260	{	2059	{
1261	struct {	2060	struct io_state *data;
1262	int errorno;
1263	int laststype;
1264	int laststatval;
1265	Stat_t statcache;
1266	} data;
1267		2061
		2062	RETVAL = newSV (sizeof (struct io_state));
		2063	data = (struct io_state *)SvPVX (RETVAL);
		2064	SvCUR_set (RETVAL, sizeof (struct io_state));
		2065	SvPOK_only (RETVAL);
		2066
1268	data.errorno = errno;	2067	data->errorno = errno;
1269	data.laststype = PL_laststype;	2068	data->laststype = PL_laststype;
1270	data.laststatval = PL_laststatval;	2069	data->laststatval = PL_laststatval;
1271	data.statcache = PL_statcache;	2070	data->statcache = PL_statcache;
1272
1273	RETVAL = newSVpvn ((char *)&data, sizeof data);
1274	}	2071	}
1275	OUTPUT:	2072	OUTPUT:
1276	RETVAL	2073	RETVAL
1277		2074
1278	void	2075	void
1279	_set_state (char *data_)	2076	_set_state (char *data_)
1280	PROTOTYPE: $	2077	PROTOTYPE: $
1281	CODE:	2078	CODE:
1282	{	2079	{
1283	struct {	2080	struct io_state data = (void )data_;
1284	int errorno;
1285	int laststype;
1286	int laststatval;
1287	Stat_t statcache;
1288	} data = (void )data_;
1289		2081
1290	errno = data->errorno;	2082	errno = data->errorno;
1291	PL_laststype = data->laststype;	2083	PL_laststype = data->laststype;
1292	PL_laststatval = data->laststatval;	2084	PL_laststatval = data->laststatval;
1293	PL_statcache = data->statcache;	2085	PL_statcache = data->statcache;
1294	}	2086	}
		2087
		2088
		2089	MODULE = Coro::State PACKAGE = Coro::AnyEvent
		2090
		2091	BOOT:
		2092	sv_activity = coro_get_sv (aTHX_ "Coro::AnyEvent::ACTIVITY", TRUE);
		2093
		2094	SV *
		2095	_schedule (...)
		2096	PROTOTYPE: @
		2097	CODE:
		2098	{
		2099	static int incede;
		2100
		2101	api_cede_notself ();
		2102
		2103	++incede;
		2104	while (coro_nready >= incede && api_cede ())
		2105	;
		2106
		2107	sv_setsv (sv_activity, &PL_sv_undef);
		2108	if (coro_nready >= incede)
		2109	{
		2110	PUSHMARK (SP);
		2111	PUTBACK;
		2112	call_pv ("Coro::AnyEvent::_activity", G_DISCARD \| G_EVAL);
		2113	SPAGAIN;
		2114	}
		2115
		2116	--incede;
		2117	}
		2118

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Comparing Coro/Coro/State.xs (file contents): Revision 1.106 by root, Mon Nov 27 02:08:55 2006 UTC vs. Revision 1.238 by root, Sat May 31 12:10:55 2008 UTC

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Comparing Coro/Coro/State.xs (file contents):
Revision 1.106 by root, Mon Nov 27 02:08:55 2006 UTC vs.
Revision 1.238 by root, Sat May 31 12:10:55 2008 UTC