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/cvs/Coro/Coro/State.xs

Comparing Coro/Coro/State.xs (file contents):
Revision 1.402 by root, Sun May 22 13:07:23 2011 UTC vs.
Revision 1.473 by root, Sun Sep 3 23:36:01 2017 UTC

1	/* this works around a bug in mingw32 providing a non-working setjmp */	1	/* this works around a bug in mingw32 providing a non-working setjmp */
2	#define USE_NO_MINGW_SETJMP_TWO_ARGS	2	#define USE_NO_MINGW_SETJMP_TWO_ARGS
3		3
4	#define NDEBUG 1	4	#define NDEBUG 1 /* perl usually disables NDEBUG later */
5		5
6	#include "libcoro/coro.c"	6	#include "libcoro/coro.c"
7		7
8	#define PERL_NO_GET_CONTEXT	8	#define PERL_NO_GET_CONTEXT
9	#define PERL_EXT	9	#define PERL_EXT
…		…
13	#include "XSUB.h"	13	#include "XSUB.h"
14	#include "perliol.h"	14	#include "perliol.h"
15		15
16	#include "schmorp.h"	16	#include "schmorp.h"
17		17
		18	#define ECB_NO_THREADS 1
		19	#define ECB_NO_LIBM 1
		20	#include "ecb.h"
		21
		22	#include <stddef.h>
18	#include <stdio.h>	23	#include <stdio.h>
19	#include <errno.h>	24	#include <errno.h>
20	#include <assert.h>	25	#include <assert.h>
21		26
		27	#ifndef SvREFCNT_dec_NN
		28	#define SvREFCNT_dec_NN(sv) SvREFCNT_dec (sv)
		29	#endif
		30
		31	#ifndef SvREFCNT_inc_NN
		32	#define SvREFCNT_inc_NN(sv) SvREFCNT_inc (sv)
		33	#endif
		34
22	#ifndef SVs_PADSTALE	35	#ifndef SVs_PADSTALE
23	# define SVs_PADSTALE 0	36	# define SVs_PADSTALE 0
		37	#endif
		38
		39	#ifdef PadARRAY
		40	# define NEWPADAPI 1
		41	# define newPADLIST(var) (Newz (0, var, 1, PADLIST), Newx (PadlistARRAY (var), 2, PAD *))
		42	#else
		43	typedef AV PADNAMELIST;
		44	# if !PERL_VERSION_ATLEAST(5,8,0)
		45	typedef AV PADLIST;
		46	typedef AV PAD;
		47	# endif
		48	# define PadlistARRAY(pl) ((PAD **)AvARRAY (pl))
		49	# define PadlistMAX(pl) AvFILLp (pl)
		50	# define PadlistNAMES(pl) (*PadlistARRAY (pl))
		51	# define PadARRAY AvARRAY
		52	# define PadMAX AvFILLp
		53	# define newPADLIST(var) ((var) = newAV (), av_extend (var, 1))
		54	#endif
		55	#ifndef PadnamelistREFCNT
		56	# define PadnamelistREFCNT(pnl) SvREFCNT (pnl)
		57	#endif
		58	#ifndef PadnamelistREFCNT_dec
		59	# define PadnamelistREFCNT_dec(pnl) SvREFCNT_dec (pnl)
		60	#endif
		61
		62	/* 5.19.something has replaced SVt_BIND by SVt_INVLIST */
		63	/* we just alias it to SVt_IV, as that is sufficient for swap_sv for now */
		64	#if PERL_VERSION_ATLEAST(5,19,0)
		65	# define SVt_BIND SVt_IV
24	#endif	66	#endif
25		67
26	#if defined(_WIN32)	68	#if defined(_WIN32)
27	# undef HAS_GETTIMEOFDAY	69	# undef HAS_GETTIMEOFDAY
28	# undef setjmp	70	# undef setjmp
…		…
31	# define setjmp _setjmp /* deep magic */	73	# define setjmp _setjmp /* deep magic */
32	#else	74	#else
33	# include <inttypes.h> /* most portable stdint.h */	75	# include <inttypes.h> /* most portable stdint.h */
34	#endif	76	#endif
35		77
36	#ifdef HAVE_MMAP
37	# include <unistd.h>
38	# include <sys/mman.h>
39	# ifndef MAP_ANONYMOUS
40	# ifdef MAP_ANON
41	# define MAP_ANONYMOUS MAP_ANON
42	# else
43	# undef HAVE_MMAP
44	# endif
45	# endif
46	# include <limits.h>
47	# ifndef PAGESIZE
48	# define PAGESIZE pagesize
49	# define BOOT_PAGESIZE pagesize = sysconf (_SC_PAGESIZE)
50	static long pagesize;
51	# else
52	# define BOOT_PAGESIZE (void)0
53	# endif
54	#else
55	# define PAGESIZE 0
56	# define BOOT_PAGESIZE (void)0
57	#endif
58
59	#if CORO_USE_VALGRIND
60	# include <valgrind/valgrind.h>
61	#endif
62
63	/* the maximum number of idle cctx that will be pooled */	78	/* the maximum number of idle cctx that will be pooled */
64	static int cctx_max_idle = 4;	79	static int cctx_max_idle = 4;
65		80
66	#if !__i386 && !__x86_64 && !__powerpc && !__m68k && !__alpha && !__mips && !__sparc64	81	#if defined(DEBUGGING) && PERL_VERSION_ATLEAST(5,12,0)
67	# undef CORO_STACKGUARD	82	# define HAS_SCOPESTACK_NAME 1
68	#endif
69
70	#ifndef CORO_STACKGUARD
71	# define CORO_STACKGUARD 0
72	#endif	83	#endif
73		84
74	/* prefer perl internal functions over our own? */	85	/* prefer perl internal functions over our own? */
75	#ifndef CORO_PREFER_PERL_FUNCTIONS	86	#ifndef CORO_PREFER_PERL_FUNCTIONS
76	# define CORO_PREFER_PERL_FUNCTIONS 0	87	# define CORO_PREFER_PERL_FUNCTIONS 0
…		…
86	# define STACKLEVEL ((void *)&stacklevel)	97	# define STACKLEVEL ((void *)&stacklevel)
87	#endif	98	#endif
88		99
89	#define IN_DESTRUCT PL_dirty	100	#define IN_DESTRUCT PL_dirty
90		101
91	#if __GNUC__ >= 3
92	# define attribute(x) __attribute__(x)
93	# define expect(expr,value) __builtin_expect ((expr), (value))
94	# define INLINE static inline
95	#else
96	# define attribute(x)
97	# define expect(expr,value) (expr)
98	# define INLINE static
99	#endif
100
101	#define expect_false(expr) expect ((expr) != 0, 0)
102	#define expect_true(expr) expect ((expr) != 0, 1)
103
104	#define NOINLINE attribute ((noinline))
105
106	#include "CoroAPI.h"	102	#include "CoroAPI.h"
107	#define GCoroAPI (&coroapi) /* very sneaky */	103	#define GCoroAPI (&coroapi) /* very sneaky */
108		104
109	#ifdef USE_ITHREADS	105	#ifdef USE_ITHREADS
110	# if CORO_PTHREAD	106	# if CORO_PTHREAD
…		…
120	# define CORO_CLOCK_MONOTONIC 1	116	# define CORO_CLOCK_MONOTONIC 1
121	# define CORO_CLOCK_THREAD_CPUTIME_ID 3	117	# define CORO_CLOCK_THREAD_CPUTIME_ID 3
122	# endif	118	# endif
123	#endif	119	#endif
124		120
		121	/* one off bugfix for perl 5.22 */
		122	#if PERL_VERSION_ATLEAST(5,22,0) && !PERL_VERSION_ATLEAST(5,24,0)
		123	# undef PadlistNAMES
		124	# define PadlistNAMES(pl) *((PADNAMELIST **)PadlistARRAY (pl))
		125	#endif
		126
		127	#if PERL_VERSION_ATLEAST(5,24,0)
		128	# define SUB_ARGARRAY PL_curpad[0]
		129	#else
		130	# define SUB_ARGARRAY (SV *)cx->blk_sub.argarray
		131	#endif
		132
		133	/* perl usually suppresses asserts. for debugging, we sometimes force it to be on */
		134	#if 0
		135	# undef NDEBUG
		136	# include <assert.h>
		137	#endif
		138
125	static double (*nvtime)(); /* so why doesn't it take void? */	139	static double (*nvtime)(); /* so why doesn't it take void? */
126	static void (*u2time)(pTHX_ UV ret[2]);	140	static void (*u2time)(pTHX_ UV ret[2]);
127		141
128	/* we hijack an hopefully unused CV flag for our purposes */	142	/* we hijack an hopefully unused CV flag for our purposes */
129	#define CVf_SLF 0x4000	143	#define CVf_SLF 0x4000
…		…
144		158
145	static GV *irsgv; /* $/ */	159	static GV *irsgv; /* $/ */
146	static GV *stdoutgv; /* *STDOUT */	160	static GV *stdoutgv; /* *STDOUT */
147	static SV *rv_diehook;	161	static SV *rv_diehook;
148	static SV *rv_warnhook;	162	static SV *rv_warnhook;
149	static HV *hv_sig; /* %SIG */
150		163
151	/* async_pool helper stuff */	164	/* async_pool helper stuff */
152	static SV *sv_pool_rss;	165	static SV *sv_pool_rss;
153	static SV *sv_pool_size;	166	static SV *sv_pool_size;
154	static SV *sv_async_pool_idle; /* description string */	167	static SV *sv_async_pool_idle; /* description string */
…		…
182	typedef struct coro_cctx	195	typedef struct coro_cctx
183	{	196	{
184	struct coro_cctx *next;	197	struct coro_cctx *next;
185		198
186	/* the stack */	199	/* the stack */
187	void *sptr;	200	struct coro_stack stack;
188	size_t ssize;
189		201
190	/* cpu state */	202	/* cpu state */
191	void *idle_sp; /* sp of top-level transfer/schedule/cede call */	203	void *idle_sp; /* sp of top-level transfer/schedule/cede call */
		204	#ifndef NDEBUG
192	JMPENV *idle_te; /* same as idle_sp, but for top_env, TODO: remove once stable */	205	JMPENV *idle_te; /* same as idle_sp, but for top_env */
		206	#endif
193	JMPENV *top_env;	207	JMPENV *top_env;
194	coro_context cctx;	208	coro_context cctx;
195		209
196	U32 gen;	210	U32 gen;
197	#if CORO_USE_VALGRIND	211	#if CORO_USE_VALGRIND
…		…
217	};	231	};
218		232
219	/* the structure where most of the perl state is stored, overlaid on the cxstack */	233	/* the structure where most of the perl state is stored, overlaid on the cxstack */
220	typedef struct	234	typedef struct
221	{	235	{
222	SV *defsv;
223	AV *defav;
224	SV *errsv;
225	SV *irsgv;
226	HV *hinthv;
227	#define VAR(name,type) type name;	236	#define VARx(name,expr,type) type name;
228	# include "state.h"	237	#include "state.h"
229	#undef VAR
230	} perl_slots;	238	} perl_slots;
231		239
232	// how many context stack entries do we need for perl_slots	240	/* how many context stack entries do we need for perl_slots */
233	#define SLOT_COUNT ((sizeof (perl_slots) + sizeof (PERL_CONTEXT) - 1) / sizeof (PERL_CONTEXT))	241	#define SLOT_COUNT ((sizeof (perl_slots) + sizeof (PERL_CONTEXT) - 1) / sizeof (PERL_CONTEXT))
234		242
235	/* this is a structure representing a perl-level coroutine */	243	/* this is a structure representing a perl-level coroutine */
236	struct coro	244	struct coro
237	{	245	{
…		…
265	SV *saved_deffh;	273	SV *saved_deffh;
266	SV *invoke_cb;	274	SV *invoke_cb;
267	AV *invoke_av;	275	AV *invoke_av;
268		276
269	/* on_enter/on_leave */	277	/* on_enter/on_leave */
270	AV *on_enter;	278	AV *on_enter; AV *on_enter_xs;
271	AV *on_leave;	279	AV *on_leave; AV *on_leave_xs;
272		280
273	/* swap_sv */	281	/* swap_sv */
274	AV *swap_sv;	282	AV *swap_sv;
275		283
276	/* times */	284	/* times */
…		…
303	static struct coro *coro_ready [CORO_PRIO_MAX - CORO_PRIO_MIN + 1][2]; /* head|tail */	311	static struct coro *coro_ready [CORO_PRIO_MAX - CORO_PRIO_MIN + 1][2]; /* head|tail */
304	static CV *cv_coro_run;	312	static CV *cv_coro_run;
305	static struct coro *coro_first;	313	static struct coro *coro_first;
306	#define coro_nready coroapi.nready	314	#define coro_nready coroapi.nready
307		315
		316	/** JIT *********************************************************************/
		317
		318	#if CORO_JIT
		319	/* APPLE doesn't have mmap though */
		320	#define CORO_JIT_UNIXY (__linux || __FreeBSD__ || __OpenBSD__ || __NetBSD__ || __solaris || __APPLE__)
		321	#ifndef CORO_JIT_TYPE
		322	#if ECB_AMD64 && CORO_JIT_UNIXY
		323	#define CORO_JIT_TYPE "amd64-unix"
		324	#elif __i386 && CORO_JIT_UNIXY
		325	#define CORO_JIT_TYPE "x86-unix"
		326	#endif
		327	#endif
		328	#endif
		329
		330	#if !defined(CORO_JIT_TYPE) || _POSIX_MEMORY_PROTECTION <= 0
		331	#undef CORO_JIT
		332	#endif
		333
		334	#if CORO_JIT
		335	typedef void (*load_save_perl_slots_type)(perl_slots *);
		336	static load_save_perl_slots_type load_perl_slots, save_perl_slots;
		337	#endif
		338
308	/** Coro::Select ************************************************************/	339	/** Coro::Select ************************************************************/
309		340
310	static OP *(*coro_old_pp_sselect) (pTHX);	341	static OP *(*coro_old_pp_sselect) (pTHX);
311	static SV *coro_select_select;	342	static SV *coro_select_select;
312		343
…		…
327		358
328	/** time stuff **************************************************************/	359	/** time stuff **************************************************************/
329		360
330	#ifdef HAS_GETTIMEOFDAY	361	#ifdef HAS_GETTIMEOFDAY
331		362
332	static void	363	ecb_inline void
333	coro_u2time (pTHX_ UV ret[2])	364	coro_u2time (pTHX_ UV ret[2])
334	{	365	{
335	struct timeval tv;	366	struct timeval tv;
336	gettimeofday (&tv, 0);	367	gettimeofday (&tv, 0);
337		368
338	ret [0] = tv.tv_sec;	369	ret [0] = tv.tv_sec;
339	ret [1] = tv.tv_usec;	370	ret [1] = tv.tv_usec;
340	}	371	}
341		372
342	static double	373	ecb_inline double
343	coro_nvtime ()	374	coro_nvtime (void)
344	{	375	{
345	struct timeval tv;	376	struct timeval tv;
346	gettimeofday (&tv, 0);	377	gettimeofday (&tv, 0);
347		378
348	return tv.tv_sec + tv.tv_usec * 1e-6;	379	return tv.tv_sec + tv.tv_usec * 1e-6;
349	}	380	}
350		381
351	static void	382	ecb_inline void
352	time_init (pTHX)	383	time_init (pTHX)
353	{	384	{
354	nvtime = coro_nvtime;	385	nvtime = coro_nvtime;
355	u2time = coro_u2time;	386	u2time = coro_u2time;
356	}	387	}
357		388
358	#else	389	#else
359		390
360	static void	391	ecb_inline void
361	time_init (pTHX)	392	time_init (pTHX)
362	{	393	{
363	SV **svp;	394	SV **svp;
364		395
365	require_pv ("Time/HiRes.pm");	396	require_pv ("Time/HiRes.pm");
366		397
367	svp = hv_fetch (PL_modglobal, "Time::NVtime", 12, 0);	398	svp = hv_fetch (PL_modglobal, "Time::NVtime", 12, 0);
368		399
369	if (!svp) croak ("Time::HiRes is required, but missing. Caught");	400	if (!svp) croak ("Time::HiRes is required, but missing. Caught");
370	if (!SvIOK (*svp)) croak ("Time::NVtime isn't a function pointer. Caught");	401	if (!SvIOK (*svp)) croak ("Time::NVtime isn't a function pointer. Caught");
371		402
…		…
377		408
378	#endif	409	#endif
379		410
380	/** lowlevel stuff **********************************************************/	411	/** lowlevel stuff **********************************************************/
381		412
382	static SV *	413	static SV * ecb_noinline
383	coro_get_sv (pTHX_ const char *name, int create)	414	coro_get_sv (pTHX_ const char *name, int create)
384	{	415	{
385	#if PERL_VERSION_ATLEAST (5,10,0)	416	#if PERL_VERSION_ATLEAST (5,10,0)
386	/* silence stupid and wrong 5.10 warning that I am unable to switch off */	417	/* silence stupid and wrong 5.10 warning that I am unable to switch off */
387	get_sv (name, create);	418	get_sv (name, create);
388	#endif	419	#endif
389	return get_sv (name, create);	420	return get_sv (name, create);
390	}	421	}
391		422
392	static AV *	423	static AV * ecb_noinline
393	coro_get_av (pTHX_ const char *name, int create)	424	coro_get_av (pTHX_ const char *name, int create)
394	{	425	{
395	#if PERL_VERSION_ATLEAST (5,10,0)	426	#if PERL_VERSION_ATLEAST (5,10,0)
396	/* silence stupid and wrong 5.10 warning that I am unable to switch off */	427	/* silence stupid and wrong 5.10 warning that I am unable to switch off */
397	get_av (name, create);	428	get_av (name, create);
398	#endif	429	#endif
399	return get_av (name, create);	430	return get_av (name, create);
400	}	431	}
401		432
402	static HV *	433	static HV * ecb_noinline
403	coro_get_hv (pTHX_ const char *name, int create)	434	coro_get_hv (pTHX_ const char *name, int create)
404	{	435	{
405	#if PERL_VERSION_ATLEAST (5,10,0)	436	#if PERL_VERSION_ATLEAST (5,10,0)
406	/* silence stupid and wrong 5.10 warning that I am unable to switch off */	437	/* silence stupid and wrong 5.10 warning that I am unable to switch off */
407	get_hv (name, create);	438	get_hv (name, create);
408	#endif	439	#endif
409	return get_hv (name, create);	440	return get_hv (name, create);
410	}	441	}
411		442
412	INLINE void	443	ecb_inline void
413	coro_times_update ()	444	coro_times_update (void)
414	{	445	{
415	#ifdef coro_clock_gettime	446	#ifdef coro_clock_gettime
416	struct timespec ts;	447	struct timespec ts;
417		448
418	ts.tv_sec = ts.tv_nsec = 0;	449	ts.tv_sec = ts.tv_nsec = 0;
…		…
430	time_real [0] = tv [0];	461	time_real [0] = tv [0];
431	time_real [1] = tv [1] * 1000;	462	time_real [1] = tv [1] * 1000;
432	#endif	463	#endif
433	}	464	}
434		465
435	INLINE void	466	ecb_inline void
436	coro_times_add (struct coro *c)	467	coro_times_add (struct coro *c)
437	{	468	{
438	c->t_real [1] += time_real [1];	469	c->t_real [1] += time_real [1];
439	if (c->t_real [1] > 1000000000) { c->t_real [1] -= 1000000000; ++c->t_real [0]; }	470	if (c->t_real [1] > 1000000000) { c->t_real [1] -= 1000000000; ++c->t_real [0]; }
440	c->t_real [0] += time_real [0];	471	c->t_real [0] += time_real [0];
…		…
442	c->t_cpu [1] += time_cpu [1];	473	c->t_cpu [1] += time_cpu [1];
443	if (c->t_cpu [1] > 1000000000) { c->t_cpu [1] -= 1000000000; ++c->t_cpu [0]; }	474	if (c->t_cpu [1] > 1000000000) { c->t_cpu [1] -= 1000000000; ++c->t_cpu [0]; }
444	c->t_cpu [0] += time_cpu [0];	475	c->t_cpu [0] += time_cpu [0];
445	}	476	}
446		477
447	INLINE void	478	ecb_inline void
448	coro_times_sub (struct coro *c)	479	coro_times_sub (struct coro *c)
449	{	480	{
450	if (c->t_real [1] < time_real [1]) { c->t_real [1] += 1000000000; --c->t_real [0]; }	481	if (c->t_real [1] < time_real [1]) { c->t_real [1] += 1000000000; --c->t_real [0]; }
451	c->t_real [1] -= time_real [1];	482	c->t_real [1] -= time_real [1];
452	c->t_real [0] -= time_real [0];	483	c->t_real [0] -= time_real [0];
…		…
460	/* magic glue */	491	/* magic glue */
461		492
462	#define CORO_MAGIC_type_cv 26	493	#define CORO_MAGIC_type_cv 26
463	#define CORO_MAGIC_type_state PERL_MAGIC_ext	494	#define CORO_MAGIC_type_state PERL_MAGIC_ext
464		495
465	#define CORO_MAGIC_NN(sv, type) \	496	#define CORO_MAGIC_NN(sv, type) \
466	(expect_true (SvMAGIC (sv)->mg_type == type) \	497	(ecb_expect_true (SvMAGIC (sv)->mg_type == type) \
467	? SvMAGIC (sv) \	498	? SvMAGIC (sv) \
468	: mg_find (sv, type))	499	: mg_find (sv, type))
469		500
470	#define CORO_MAGIC(sv, type) \	501	#define CORO_MAGIC(sv, type) \
471	(expect_true (SvMAGIC (sv)) \	502	(ecb_expect_true (SvMAGIC (sv)) \
472	? CORO_MAGIC_NN (sv, type) \	503	? CORO_MAGIC_NN (sv, type) \
473	: 0)	504	: 0)
474		505
475	#define CORO_MAGIC_cv(cv) CORO_MAGIC (((SV *)(cv)), CORO_MAGIC_type_cv)	506	#define CORO_MAGIC_cv(cv) CORO_MAGIC (((SV *)(cv)), CORO_MAGIC_type_cv)
476	#define CORO_MAGIC_state(sv) CORO_MAGIC_NN (((SV *)(sv)), CORO_MAGIC_type_state)	507	#define CORO_MAGIC_state(sv) CORO_MAGIC_NN (((SV *)(sv)), CORO_MAGIC_type_state)
477		508
478	INLINE MAGIC *	509	ecb_inline MAGIC *
479	SvSTATEhv_p (pTHX_ SV *coro)	510	SvSTATEhv_p (pTHX_ SV *coro)
480	{	511	{
481	MAGIC *mg;	512	MAGIC *mg;
482		513
483	if (expect_true (	514	if (ecb_expect_true (
484	SvTYPE (coro) == SVt_PVHV	515	SvTYPE (coro) == SVt_PVHV
485	&& (mg = CORO_MAGIC_state (coro))	516	&& (mg = CORO_MAGIC_state (coro))
486	&& mg->mg_virtual == &coro_state_vtbl	517	&& mg->mg_virtual == &coro_state_vtbl
487	))	518	))
488	return mg;	519	return mg;
489		520
490	return 0;	521	return 0;
491	}	522	}
492		523
493	INLINE struct coro *	524	ecb_inline struct coro *
494	SvSTATE_ (pTHX_ SV *coro)	525	SvSTATE_ (pTHX_ SV *coro_sv)
495	{	526	{
496	MAGIC *mg;	527	MAGIC *mg;
497		528
498	if (SvROK (coro))	529	if (SvROK (coro_sv))
499	coro = SvRV (coro);	530	coro_sv = SvRV (coro_sv);
500		531
501	mg = SvSTATEhv_p (aTHX_ coro);	532	mg = SvSTATEhv_p (aTHX_ coro_sv);
502	if (!mg)	533	if (!mg)
503	croak ("Coro::State object required");	534	croak ("Coro::State object required");
504		535
505	return (struct coro *)mg->mg_ptr;	536	return (struct coro *)mg->mg_ptr;
506	}	537	}
…		…
512	#define SvSTATE_current SvSTATE_hv (SvRV (coro_current))	543	#define SvSTATE_current SvSTATE_hv (SvRV (coro_current))
513		544
514	/*****************************************************************************/	545	/*****************************************************************************/
515	/* padlist management and caching */	546	/* padlist management and caching */
516		547
517	static AV *	548	ecb_inline PADLIST *
518	coro_derive_padlist (pTHX_ CV *cv)	549	coro_derive_padlist (pTHX_ CV *cv)
519	{	550	{
520	AV *padlist = CvPADLIST (cv);	551	PADLIST *padlist = CvPADLIST (cv);
521	AV *newpadlist, *newpad;	552	PADLIST *newpadlist;
		553	PADNAMELIST *padnames;
		554	PAD *newpad;
		555	PADOFFSET off = PadlistMAX (padlist) + 1;
522		556
523	newpadlist = newAV ();	557	#if NEWPADAPI
		558
		559	/* if we had the original CvDEPTH, we might be able to steal the CvDEPTH+1 entry instead */
		560	/* 20131102194744.GA6705@schmorp.de, 20131102195825.2013.qmail@lists-nntp.develooper.com */
		561	while (!PadlistARRAY (padlist)[off - 1])
		562	--off;
		563
		564	Perl_pad_push (aTHX_ padlist, off);
		565
		566	newpad = PadlistARRAY (padlist)[off];
		567	PadlistARRAY (padlist)[off] = 0;
		568
		569	#else
		570
		571	#if PERL_VERSION_ATLEAST (5,10,0)
		572	Perl_pad_push (aTHX_ padlist, off);
		573	#else
		574	Perl_pad_push (aTHX_ padlist, off, 1);
		575	#endif
		576
		577	newpad = PadlistARRAY (padlist)[off];
		578	PadlistMAX (padlist) = off - 1;
		579
		580	#endif
		581
		582	newPADLIST (newpadlist);
		583	#if !PERL_VERSION_ATLEAST(5,15,3)
		584	/* Padlists are AvREAL as of 5.15.3. See perl bug #98092 and perl commit 7d953ba. */
524	AvREAL_off (newpadlist);	585	AvREAL_off (newpadlist);
525	#if PERL_VERSION_ATLEAST (5,10,0)
526	Perl_pad_push (aTHX_ padlist, AvFILLp (padlist) + 1);
527	#else
528	Perl_pad_push (aTHX_ padlist, AvFILLp (padlist) + 1, 1);
529	#endif	586	#endif
530	newpad = (AV *)AvARRAY (padlist)[AvFILLp (padlist)];
531	--AvFILLp (padlist);
532		587
533	av_store (newpadlist, 0, SvREFCNT_inc_NN (AvARRAY (padlist)[0]));	588	/* Already extended to 2 elements by newPADLIST. */
534	av_store (newpadlist, 1, (SV *)newpad);	589	PadlistMAX (newpadlist) = 1;
		590
		591	padnames = PadlistNAMES (padlist);
		592	++PadnamelistREFCNT (padnames);
		593	PadlistNAMES (newpadlist) = padnames;
		594
		595	PadlistARRAY (newpadlist)[1] = newpad;
535		596
536	return newpadlist;	597	return newpadlist;
537	}	598	}
538		599
539	static void	600	ecb_inline void
540	free_padlist (pTHX_ AV *padlist)	601	free_padlist (pTHX_ PADLIST *padlist)
541	{	602	{
542	/* may be during global destruction */	603	/* may be during global destruction */
543	if (!IN_DESTRUCT)	604	if (!IN_DESTRUCT)
544	{	605	{
545	I32 i = AvFILLp (padlist);	606	I32 i = PadlistMAX (padlist);
546		607
547	while (i > 0) /* special-case index 0 */	608	while (i > 0) /* special-case index 0 */
548	{	609	{
549	/* we try to be extra-careful here */	610	/* we try to be extra-careful here */
550	AV *av = (AV *)AvARRAY (padlist)[i--];	611	PAD *pad = PadlistARRAY (padlist)[i--];
551	I32 j = AvFILLp (av);
552		612
		613	if (pad)
		614	{
		615	I32 j = PadMAX (pad);
		616
553	while (j >= 0)	617	while (j >= 0)
554	SvREFCNT_dec (AvARRAY (av)[j--]);	618	SvREFCNT_dec (PadARRAY (pad)[j--]);
555		619
556	AvFILLp (av) = -1;	620	PadMAX (pad) = -1;
557	SvREFCNT_dec (av);	621	SvREFCNT_dec (pad);
		622	}
558	}	623	}
559		624
560	SvREFCNT_dec (AvARRAY (padlist)[0]);	625	PadnamelistREFCNT_dec (PadlistNAMES (padlist));
561		626
		627	#if NEWPADAPI
		628	Safefree (PadlistARRAY (padlist));
		629	Safefree (padlist);
		630	#else
562	AvFILLp (padlist) = -1;	631	AvFILLp (padlist) = -1;
		632	AvREAL_off (padlist);
563	SvREFCNT_dec ((SV*)padlist);	633	SvREFCNT_dec ((SV*)padlist);
		634	#endif
564	}	635	}
565	}	636	}
566		637
567	static int	638	static int
568	coro_cv_free (pTHX_ SV *sv, MAGIC *mg)	639	coro_cv_free (pTHX_ SV *sv, MAGIC *mg)
569	{	640	{
570	AV *padlist;	641	PADLIST *padlist;
571	AV *av = (AV *)mg->mg_obj;	642	PADLIST **padlists = (PADLIST **)(mg->mg_ptr + sizeof(size_t));
		643	size_t len = *(size_t *)mg->mg_ptr;
572		644
573	/* perl manages to free our internal AV and _then_ call us */	645	/* perl manages to free our internal AV and _then_ call us */
574	if (IN_DESTRUCT)	646	if (IN_DESTRUCT)
575	return 0;	647	return 0;
576		648
577	/* casting is fun. */	649	while (len--)
578	while (&PL_sv_undef != (SV *)(padlist = (AV *)av_pop (av)))
579	free_padlist (aTHX_ padlist);	650	free_padlist (aTHX_ padlists[len]);
580
581	SvREFCNT_dec (av); /* sv_magicext increased the refcount */
582		651
583	return 0;	652	return 0;
584	}	653	}
585		654
586	static MGVTBL coro_cv_vtbl = {	655	static MGVTBL coro_cv_vtbl = {
587	0, 0, 0, 0,	656	0, 0, 0, 0,
588	coro_cv_free	657	coro_cv_free
589	};	658	};
590		659
591	/* the next two functions merely cache the padlists */	660	/* the next two functions merely cache the padlists */
592	static void	661	ecb_inline void
593	get_padlist (pTHX_ CV *cv)	662	get_padlist (pTHX_ CV *cv)
594	{	663	{
595	MAGIC *mg = CORO_MAGIC_cv (cv);	664	MAGIC *mg = CORO_MAGIC_cv (cv);
596	AV *av;	665	size_t *lenp;
597		666
598	if (expect_true (mg && AvFILLp ((av = (AV *)mg->mg_obj)) >= 0))	667	if (ecb_expect_true (mg && *(lenp = (size_t *)mg->mg_ptr)))
599	CvPADLIST (cv) = (AV *)AvARRAY (av)[AvFILLp (av)--];	668	CvPADLIST (cv) = ((PADLIST **)(mg->mg_ptr + sizeof(size_t)))[--*lenp];
600	else	669	else
601	{	670	{
602	#if CORO_PREFER_PERL_FUNCTIONS	671	#if CORO_PREFER_PERL_FUNCTIONS
603	/* this is probably cleaner? but also slower! */	672	/* this is probably cleaner? but also slower! */
604	/* in practise, it seems to be less stable */	673	/* in practise, it seems to be less stable */
…		…
610	CvPADLIST (cv) = coro_derive_padlist (aTHX_ cv);	679	CvPADLIST (cv) = coro_derive_padlist (aTHX_ cv);
611	#endif	680	#endif
612	}	681	}
613	}	682	}
614		683
615	static void	684	ecb_inline void
616	put_padlist (pTHX_ CV *cv)	685	put_padlist (pTHX_ CV *cv)
617	{	686	{
618	MAGIC *mg = CORO_MAGIC_cv (cv);	687	MAGIC *mg = CORO_MAGIC_cv (cv);
619	AV *av;
620		688
621	if (expect_false (!mg))	689	if (ecb_expect_false (!mg))
		690	{
622	mg = sv_magicext ((SV *)cv, (SV *)newAV (), CORO_MAGIC_type_cv, &coro_cv_vtbl, 0, 0);	691	mg = sv_magicext ((SV *)cv, 0, CORO_MAGIC_type_cv, &coro_cv_vtbl, 0, 0);
		692	Newz (0, mg->mg_ptr ,sizeof (size_t) + sizeof (PADLIST *), char);
		693	mg->mg_len = 1; /* so mg_free frees mg_ptr */
		694	}
		695	else
		696	Renew (mg->mg_ptr,
		697	sizeof(size_t) + (*(size_t *)mg->mg_ptr + 1) * sizeof(PADLIST *),
		698	char);
623		699
624	av = (AV *)mg->mg_obj;	700	((PADLIST **)(mg->mg_ptr + sizeof (size_t))) [(*(size_t *)mg->mg_ptr)++] = CvPADLIST (cv);
625
626	if (expect_false (AvFILLp (av) >= AvMAX (av)))
627	av_extend (av, AvFILLp (av) + 1);
628
629	AvARRAY (av)[++AvFILLp (av)] = (SV *)CvPADLIST (cv);
630	}	701	}
631		702
632	/** load & save, init *******************************************************/	703	/** load & save, init *******************************************************/
633		704
		705	ecb_inline void
		706	swap_sv (SV *a, SV *b)
		707	{
		708	const U32 keep = SVs_PADSTALE | SVs_PADTMP | SVs_PADMY; /* keep these flags */
		709	SV tmp;
		710
		711	/* swap sv_any */
		712	SvANY (&tmp) = SvANY (a); SvANY (a) = SvANY (b); SvANY (b) = SvANY (&tmp);
		713
		714	/* swap sv_flags */
		715	SvFLAGS (&tmp) = SvFLAGS (a);
		716	SvFLAGS (a) = (SvFLAGS (a) & keep) | (SvFLAGS (b ) & ~keep);
		717	SvFLAGS (b) = (SvFLAGS (b) & keep) | (SvFLAGS (&tmp) & ~keep);
		718
		719	#if PERL_VERSION_ATLEAST (5,10,0)
		720	/* perl 5.10 and later complicates this _quite_ a bit, but it also
		721	* is much faster, so no quarrels here. alternatively, we could
		722	* sv_upgrade to avoid this.
		723	*/
		724	{
		725	/* swap sv_u */
		726	tmp.sv_u = a->sv_u; a->sv_u = b->sv_u; b->sv_u = tmp.sv_u;
		727
		728	/* if SvANY points to the head, we need to adjust the pointers,
		729	* as the pointer for a still points to b, and maybe vice versa.
		730	*/
		731	U32 svany_in_head_set = (1 << SVt_NULL) | (1 << SVt_BIND) | (1 << SVt_IV) | (1 << SVt_RV);
		732	#if NVSIZE <= IVSIZE && PERL_VERSION_ATLEAST(5,22,0)
		733	svany_in_head_set |= 1 << SVt_NV;
		734	#endif
		735
		736	#define svany_in_head(type) (svany_in_head_set & (1 << (type)))
		737
		738	if (svany_in_head (SvTYPE (a)))
		739	SvANY (a) = (void *)((PTRV)SvANY (a) - (PTRV)b + (PTRV)a);
		740
		741	if (svany_in_head (SvTYPE (b)))
		742	SvANY (b) = (void *)((PTRV)SvANY (b) - (PTRV)a + (PTRV)b);
		743	}
		744	#endif
		745	}
		746
634	/* swap sv heads, at least logically */	747	/* swap sv heads, at least logically */
635	static void	748	static void
636	swap_svs (pTHX_ Coro__State c)	749	swap_svs_enter (pTHX_ Coro__State c)
637	{	750	{
638	int i;	751	int i;
639		752
640	for (i = 0; i <= AvFILLp (c->swap_sv); )	753	for (i = 0; i <= AvFILLp (c->swap_sv); i += 2)
641	{	754	swap_sv (AvARRAY (c->swap_sv)[i], AvARRAY (c->swap_sv)[i + 1]);
642	SV *a = AvARRAY (c->swap_sv)[i++];
643	SV *b = AvARRAY (c->swap_sv)[i++];
644
645	const U32 keep = SVs_PADSTALE | SVs_PADTMP | SVs_PADMY; /* keep these flags */
646	SV tmp;
647
648	/* swap sv_any */
649	SvANY (&tmp) = SvANY (a); SvANY (a) = SvANY (b); SvANY (b) = SvANY (&tmp);
650
651	/* swap sv_flags */
652	SvFLAGS (&tmp) = SvFLAGS (a);
653	SvFLAGS (a) = (SvFLAGS (a) & keep) | (SvFLAGS (b ) & ~keep);
654	SvFLAGS (b) = (SvFLAGS (b) & keep) | (SvFLAGS (&tmp) & ~keep);
655
656	#if PERL_VERSION_ATLEAST (5,10,0)
657	/* perl 5.10 complicates this _quite_ a bit, but it also is
658	* much faster, so no quarrels here. alternatively, we could
659	* sv_upgrade to avoid this.
660	*/
661	{
662	/* swap sv_u */
663	tmp.sv_u = a->sv_u; a->sv_u = b->sv_u; b->sv_u = tmp.sv_u;
664
665	/* if SvANY points to the head, we need to adjust the pointers,
666	* as the pointer for a still points to b, and maybe vice versa.
667	*/
668	#define svany_in_head(type) \
669	(((1 << SVt_NULL) | (1 << SVt_BIND) | (1 << SVt_IV) | (1 << SVt_RV)) & (1 << (type)))
670
671	if (svany_in_head (SvTYPE (a)))
672	SvANY (a) = (void *)((PTRV)SvANY (a) - (PTRV)b + (PTRV)a);
673
674	if (svany_in_head (SvTYPE (b)))
675	SvANY (b) = (void *)((PTRV)SvANY (b) - (PTRV)a + (PTRV)b);
676	}
677	#endif
678	}
679	}	755	}
680		756
		757	static void
		758	swap_svs_leave (pTHX_ Coro__State c)
		759	{
		760	int i;
		761
		762	for (i = AvFILLp (c->swap_sv) - 1; i >= 0; i -= 2)
		763	swap_sv (AvARRAY (c->swap_sv)[i], AvARRAY (c->swap_sv)[i + 1]);
		764	}
		765
681	#define SWAP_SVS(coro) \	766	#define SWAP_SVS_ENTER(coro) \
682	if (expect_false ((coro)->swap_sv)) \	767	if (ecb_expect_false ((coro)->swap_sv)) \
683	swap_svs (aTHX_ (coro))	768	swap_svs_enter (aTHX_ (coro))
		769
		770	#define SWAP_SVS_LEAVE(coro) \
		771	if (ecb_expect_false ((coro)->swap_sv)) \
		772	swap_svs_leave (aTHX_ (coro))
684		773
685	static void	774	static void
686	on_enterleave_call (pTHX_ SV *cb);	775	on_enterleave_call (pTHX_ SV *cb);
687		776
688	static void	777	static void
…		…
691	perl_slots *slot = c->slot;	780	perl_slots *slot = c->slot;
692	c->slot = 0;	781	c->slot = 0;
693		782
694	PL_mainstack = c->mainstack;	783	PL_mainstack = c->mainstack;
695		784
696	GvSV (PL_defgv) = slot->defsv;	785	#if CORO_JIT
697	GvAV (PL_defgv) = slot->defav;	786	load_perl_slots (slot);
698	GvSV (PL_errgv) = slot->errsv;	787	#else
699	GvSV (irsgv) = slot->irsgv;
700	GvHV (PL_hintgv) = slot->hinthv;
701
702	#define VAR(name,type) PL_ ## name = slot->name;	788	#define VARx(name,expr,type) expr = slot->name;
703	# include "state.h"	789	#include "state.h"
704	#undef VAR	790	#endif
705		791
706	{	792	{
707	dSP;	793	dSP;
708		794
709	CV *cv;	795	CV *cv;
710		796
711	/* now do the ugly restore mess */	797	/* now do the ugly restore mess */
712	while (expect_true (cv = (CV *)POPs))	798	while (ecb_expect_true (cv = (CV *)POPs))
713	{	799	{
714	put_padlist (aTHX_ cv); /* mark this padlist as available */	800	put_padlist (aTHX_ cv); /* mark this padlist as available */
715	CvDEPTH (cv) = PTR2IV (POPs);	801	CvDEPTH (cv) = PTR2IV (POPs);
716	CvPADLIST (cv) = (AV *)POPs;	802	CvPADLIST (cv) = (PADLIST *)POPs;
717	}	803	}
718		804
719	PUTBACK;	805	PUTBACK;
720	}	806	}
721		807
722	slf_frame = c->slf_frame;	808	slf_frame = c->slf_frame;
723	CORO_THROW = c->except;	809	CORO_THROW = c->except;
724		810
725	if (expect_false (enable_times))	811	if (ecb_expect_false (enable_times))
726	{	812	{
727	if (expect_false (!times_valid))	813	if (ecb_expect_false (!times_valid))
728	coro_times_update ();	814	coro_times_update ();
729		815
730	coro_times_sub (c);	816	coro_times_sub (c);
731	}	817	}
732		818
733	if (expect_false (c->on_enter))	819	if (ecb_expect_false (c->on_enter))
734	{	820	{
735	int i;	821	int i;
736		822
737	for (i = 0; i <= AvFILLp (c->on_enter); ++i)	823	for (i = 0; i <= AvFILLp (c->on_enter); ++i)
738	on_enterleave_call (aTHX_ AvARRAY (c->on_enter)[i]);	824	on_enterleave_call (aTHX_ AvARRAY (c->on_enter)[i]);
739	}	825	}
740		826
		827	if (ecb_expect_false (c->on_enter_xs))
		828	{
		829	int i;
		830
		831	for (i = 0; i <= AvFILLp (c->on_enter_xs); i += 2)
		832	((coro_enterleave_hook)AvARRAY (c->on_enter_xs)[i]) (aTHX_ AvARRAY (c->on_enter_xs)[i + 1]);
		833	}
		834
741	SWAP_SVS (c);	835	SWAP_SVS_ENTER (c);
742	}	836	}
743		837
744	static void	838	static void
745	save_perl (pTHX_ Coro__State c)	839	save_perl (pTHX_ Coro__State c)
746	{	840	{
747	SWAP_SVS (c);	841	SWAP_SVS_LEAVE (c);
748		842
		843	if (ecb_expect_false (c->on_leave_xs))
		844	{
		845	int i;
		846
		847	for (i = AvFILLp (c->on_leave_xs) - 1; i >= 0; i -= 2)
		848	((coro_enterleave_hook)AvARRAY (c->on_leave_xs)[i]) (aTHX_ AvARRAY (c->on_leave_xs)[i + 1]);
		849	}
		850
749	if (expect_false (c->on_leave))	851	if (ecb_expect_false (c->on_leave))
750	{	852	{
751	int i;	853	int i;
752		854
753	for (i = AvFILLp (c->on_leave); i >= 0; --i)	855	for (i = AvFILLp (c->on_leave); i >= 0; --i)
754	on_enterleave_call (aTHX_ AvARRAY (c->on_leave)[i]);	856	on_enterleave_call (aTHX_ AvARRAY (c->on_leave)[i]);
755	}	857	}
756		858
757	times_valid = 0;	859	times_valid = 0;
758		860
759	if (expect_false (enable_times))	861	if (ecb_expect_false (enable_times))
760	{	862	{
761	coro_times_update (); times_valid = 1;	863	coro_times_update (); times_valid = 1;
762	coro_times_add (c);	864	coro_times_add (c);
763	}	865	}
764		866
…		…
778		880
779	XPUSHs (Nullsv);	881	XPUSHs (Nullsv);
780	/* this loop was inspired by pp_caller */	882	/* this loop was inspired by pp_caller */
781	for (;;)	883	for (;;)
782	{	884	{
783	while (expect_true (cxix >= 0))	885	while (ecb_expect_true (cxix >= 0))
784	{	886	{
785	PERL_CONTEXT *cx = &ccstk[cxix--];	887	PERL_CONTEXT *cx = &ccstk[cxix--];
786		888
787	if (expect_true (CxTYPE (cx) == CXt_SUB) || expect_false (CxTYPE (cx) == CXt_FORMAT))	889	if (ecb_expect_true (CxTYPE (cx) == CXt_SUB) || ecb_expect_false (CxTYPE (cx) == CXt_FORMAT))
788	{	890	{
789	CV *cv = cx->blk_sub.cv;	891	CV *cv = cx->blk_sub.cv;
790		892
791	if (expect_true (CvDEPTH (cv)))	893	if (ecb_expect_true (CvDEPTH (cv)))
792	{	894	{
793	EXTEND (SP, 3);	895	EXTEND (SP, 3);
794	PUSHs ((SV *)CvPADLIST (cv));	896	PUSHs ((SV *)CvPADLIST (cv));
795	PUSHs (INT2PTR (SV *, (IV)CvDEPTH (cv)));	897	PUSHs (INT2PTR (SV *, (IV)CvDEPTH (cv)));
796	PUSHs ((SV *)cv);	898	PUSHs ((SV *)cv);
…		…
799	get_padlist (aTHX_ cv);	901	get_padlist (aTHX_ cv);
800	}	902	}
801	}	903	}
802	}	904	}
803		905
804	if (expect_true (top_si->si_type == PERLSI_MAIN))	906	if (ecb_expect_true (top_si->si_type == PERLSI_MAIN))
805	break;	907	break;
806		908
807	top_si = top_si->si_prev;	909	top_si = top_si->si_prev;
808	ccstk = top_si->si_cxstack;	910	ccstk = top_si->si_cxstack;
809	cxix = top_si->si_cxix;	911	cxix = top_si->si_cxix;
…		…
811		913
812	PUTBACK;	914	PUTBACK;
813	}	915	}
814		916
815	/* allocate some space on the context stack for our purposes */	917	/* allocate some space on the context stack for our purposes */
816	if (expect_false (cxstack_ix + SLOT_COUNT >= cxstack_max))	918	if (ecb_expect_false (cxstack_ix + (int)SLOT_COUNT >= cxstack_max))
817	{	919	{
818	unsigned int i;	920	unsigned int i;
819		921
820	for (i = 0; i < SLOT_COUNT; ++i)	922	for (i = 0; i < SLOT_COUNT; ++i)
821	CXINC;	923	CXINC;
…		…
826	c->mainstack = PL_mainstack;	928	c->mainstack = PL_mainstack;
827		929
828	{	930	{
829	perl_slots *slot = c->slot = (perl_slots *)(cxstack + cxstack_ix + 1);	931	perl_slots *slot = c->slot = (perl_slots *)(cxstack + cxstack_ix + 1);
830		932
831	slot->defav = GvAV (PL_defgv);	933	#if CORO_JIT
832	slot->defsv = DEFSV;	934	save_perl_slots (slot);
833	slot->errsv = ERRSV;	935	#else
834	slot->irsgv = GvSV (irsgv);
835	slot->hinthv = GvHV (PL_hintgv);
836
837	#define VAR(name,type) slot->name = PL_ ## name;	936	#define VARx(name,expr,type) slot->name = expr;
838	# include "state.h"	937	#include "state.h"
839	#undef VAR	938	#endif
840	}	939	}
841	}	940	}
842		941
843	/*	942	/*
844	* allocate various perl stacks. This is almost an exact copy	943	* allocate various perl stacks. This is almost an exact copy
…		…
875	#endif	974	#endif
876		975
877	New(54,PL_scopestack,8,I32);	976	New(54,PL_scopestack,8,I32);
878	PL_scopestack_ix = 0;	977	PL_scopestack_ix = 0;
879	PL_scopestack_max = 8;	978	PL_scopestack_max = 8;
		979	#if HAS_SCOPESTACK_NAME
		980	New(54,PL_scopestack_name,8,const char*);
		981	#endif
880		982
881	New(54,PL_savestack,24,ANY);	983	New(54,PL_savestack,24,ANY);
882	PL_savestack_ix = 0;	984	PL_savestack_ix = 0;
883	PL_savestack_max = 24;	985	PL_savestack_max = 24;
		986	#if PERL_VERSION_ATLEAST (5,24,0)
		987	/* perl 5.24 moves SS_MAXPUSH optimisation from */
		988	/* the header macros to PL_savestack_max */
		989	PL_savestack_max -= SS_MAXPUSH;
		990	#endif
884		991
885	#if !PERL_VERSION_ATLEAST (5,10,0)	992	#if !PERL_VERSION_ATLEAST (5,10,0)
886	New(54,PL_retstack,4,OP*);	993	New(54,PL_retstack,4,OP*);
887	PL_retstack_ix = 0;	994	PL_retstack_ix = 0;
888	PL_retstack_max = 4;	995	PL_retstack_max = 4;
…		…
912	}	1019	}
913		1020
914	Safefree (PL_tmps_stack);	1021	Safefree (PL_tmps_stack);
915	Safefree (PL_markstack);	1022	Safefree (PL_markstack);
916	Safefree (PL_scopestack);	1023	Safefree (PL_scopestack);
		1024	#if HAS_SCOPESTACK_NAME
		1025	Safefree (PL_scopestack_name);
		1026	#endif
917	Safefree (PL_savestack);	1027	Safefree (PL_savestack);
918	#if !PERL_VERSION_ATLEAST (5,10,0)	1028	#if !PERL_VERSION_ATLEAST (5,10,0)
919	Safefree (PL_retstack);	1029	Safefree (PL_retstack);
920	#endif	1030	#endif
921	}	1031	}
…		…
951	}	1061	}
952		1062
953	return rss;	1063	return rss;
954	}	1064	}
955		1065
956	/** coroutine stack handling ************************************************/	1066	/** provide custom get/set/clear methods for %SIG elements ******************/
957
958	static int (*orig_sigelem_get) (pTHX_ SV *sv, MAGIC *mg);
959	static int (*orig_sigelem_set) (pTHX_ SV *sv, MAGIC *mg);
960	static int (*orig_sigelem_clr) (pTHX_ SV *sv, MAGIC *mg);
961		1067
962	/* apparently < 5.8.8 */	1068	/* apparently < 5.8.8 */
963	#ifndef MgPV_nolen_const	1069	#ifndef MgPV_nolen_const
964	#define MgPV_nolen_const(mg) (((((int)(mg)->mg_len)) == HEf_SVKEY) ? \	1070	#define MgPV_nolen_const(mg) (((((int)(mg)->mg_len)) == HEf_SVKEY) ? \
965	SvPV_nolen((SV*)((mg)->mg_ptr)) : \	1071	SvPV_nolen((SV*)((mg)->mg_ptr)) : \
966	(const char*)(mg)->mg_ptr)	1072	(const char*)(mg)->mg_ptr)
967	#endif	1073	#endif
		1074
		1075	/* this will be a patched copy of PL_vtbl_sigelem */
		1076	static MGVTBL coro_sigelem_vtbl;
		1077
		1078	static int ecb_cold
		1079	coro_sig_copy (pTHX_ SV *sv, MAGIC *mg, SV *nsv, const char *name, I32 namlen)
		1080	{
		1081	char *key = SvPV_nolen ((SV *)name);
		1082
		1083	/* do what mg_copy normally does */
		1084	sv_magic (nsv, mg->mg_obj, PERL_MAGIC_sigelem, name, namlen);
		1085	assert (mg_find (nsv, PERL_MAGIC_sigelem)->mg_virtual == &PL_vtbl_sigelem);
		1086
		1087	/* patch sigelem vtbl, but only for __WARN__ and __DIE__ */
		1088	if (*key == '_'
		1089	&& (strEQ (key, "__DIE__")
		1090	|| strEQ (key, "__WARN__")))
		1091	mg_find (nsv, PERL_MAGIC_sigelem)->mg_virtual = &coro_sigelem_vtbl;
		1092
		1093	return 1;
		1094	}
		1095
		1096	/* perl does not have a %SIG vtbl, we provide one so we can override */
		1097	/* the magic vtbl for the __DIE__ and __WARN__ members */
		1098	static const MGVTBL coro_sig_vtbl = {
		1099	0, 0, 0, 0, 0,
		1100	coro_sig_copy
		1101	};
968		1102
969	/*	1103	/*
970	* This overrides the default magic get method of %SIG elements.	1104	* This overrides the default magic get method of %SIG elements.
971	* The original one doesn't provide for reading back of PL_diehook/PL_warnhook	1105	* The original one doesn't provide for reading back of PL_diehook/PL_warnhook
972	* and instead of trying to save and restore the hash elements (extremely slow),	1106	* and instead of trying to save and restore the hash elements (extremely slow),
973	* we just provide our own readback here.	1107	* we just provide our own readback here.
974	*/	1108	*/
975	static int	1109	static int ecb_cold
976	coro_sigelem_get (pTHX_ SV *sv, MAGIC *mg)	1110	coro_sigelem_get (pTHX_ SV *sv, MAGIC *mg)
977	{	1111	{
978	const char *s = MgPV_nolen_const (mg);	1112	const char *s = MgPV_nolen_const (mg);
		1113	/* the key must be either __DIE__ or __WARN__ here */
		1114	SV **svp = s[2] == 'D' ? &PL_diehook : &PL_warnhook;
979		1115
980	if (*s == '_')	1116	SV *ssv;
981	{
982	SV **svp = 0;
983		1117
984	if (strEQ (s, "__DIE__" )) svp = &PL_diehook;
985	if (strEQ (s, "__WARN__")) svp = &PL_warnhook;
986
987	if (svp)	1118	if (!*svp)
988	{	1119	ssv = &PL_sv_undef;
989	sv_setsv (sv, *svp ? *svp : &PL_sv_undef);	1120	else if (SvTYPE (*svp) == SVt_PVCV) /* perlio directly stores a CV in warnhook. ugh. */
990	return 0;	1121	ssv = sv_2mortal (newRV_inc (*svp));
991	}	1122	else
992	}	1123	ssv = *svp;
993		1124
994	return orig_sigelem_get ? orig_sigelem_get (aTHX_ sv, mg) : 0;	1125	sv_setsv (sv, ssv);
		1126	return 0;
995	}	1127	}
996		1128
997	static int	1129	static int ecb_cold
998	coro_sigelem_clr (pTHX_ SV *sv, MAGIC *mg)	1130	coro_sigelem_clr (pTHX_ SV *sv, MAGIC *mg)
999	{	1131	{
1000	const char *s = MgPV_nolen_const (mg);	1132	const char *s = MgPV_nolen_const (mg);
		1133	/* the key must be either __DIE__ or __WARN__ here */
		1134	SV **svp = s[2] == 'D' ? &PL_diehook : &PL_warnhook;
1001		1135
1002	if (*s == '_')
1003	{
1004	SV **svp = 0;
1005
1006	if (strEQ (s, "__DIE__" )) svp = &PL_diehook;
1007	if (strEQ (s, "__WARN__")) svp = &PL_warnhook;
1008
1009	if (svp)
1010	{
1011	SV *old = *svp;	1136	SV *old = *svp;
1012	*svp = 0;	1137	*svp = 0;
1013	SvREFCNT_dec (old);	1138	SvREFCNT_dec (old);
1014	return 0;	1139	return 0;
1015	}
1016	}
1017
1018	return orig_sigelem_clr ? orig_sigelem_clr (aTHX_ sv, mg) : 0;
1019	}	1140	}
1020		1141
1021	static int	1142	static int ecb_cold
1022	coro_sigelem_set (pTHX_ SV *sv, MAGIC *mg)	1143	coro_sigelem_set (pTHX_ SV *sv, MAGIC *mg)
1023	{	1144	{
1024	const char *s = MgPV_nolen_const (mg);	1145	const char *s = MgPV_nolen_const (mg);
		1146	/* the key must be either __DIE__ or __WARN__ here */
		1147	SV **svp = s[2] == 'D' ? &PL_diehook : &PL_warnhook;
1025		1148
1026	if (*s == '_')
1027	{
1028	SV **svp = 0;
1029
1030	if (strEQ (s, "__DIE__" )) svp = &PL_diehook;
1031	if (strEQ (s, "__WARN__")) svp = &PL_warnhook;
1032
1033	if (svp)
1034	{
1035	SV *old = *svp;	1149	SV *old = *svp;
1036	*svp = SvOK (sv) ? newSVsv (sv) : 0;	1150	*svp = SvOK (sv) ? newSVsv (sv) : 0;
1037	SvREFCNT_dec (old);	1151	SvREFCNT_dec (old);
1038	return 0;	1152	return 0;
1039	}
1040	}
1041
1042	return orig_sigelem_set ? orig_sigelem_set (aTHX_ sv, mg) : 0;
1043	}	1153	}
1044		1154
1045	static void	1155	static void
1046	prepare_nop (pTHX_ struct coro_transfer_args *ta)	1156	prepare_nop (pTHX_ struct coro_transfer_args *ta)
1047	{	1157	{
…		…
1059	slf_check_repeat (pTHX_ struct CoroSLF *frame)	1169	slf_check_repeat (pTHX_ struct CoroSLF *frame)
1060	{	1170	{
1061	return 1;	1171	return 1;
1062	}	1172	}
1063		1173
		1174	/** coroutine stack handling ************************************************/
		1175
1064	static UNOP init_perl_op;	1176	static UNOP init_perl_op;
1065		1177
1066	static void NOINLINE /* noinline to keep it out of the transfer fast path */	1178	ecb_noinline static void /* noinline to keep it out of the transfer fast path */
1067	init_perl (pTHX_ struct coro *coro)	1179	init_perl (pTHX_ struct coro *coro)
1068	{	1180	{
1069	/*	1181	/*
1070	* emulate part of the perl startup here.	1182	* emulate part of the perl startup here.
1071	*/	1183	*/
…		…
1088	PL_hints = 0;	1200	PL_hints = 0;
1089		1201
1090	/* recreate the die/warn hooks */	1202	/* recreate the die/warn hooks */
1091	PL_diehook = SvREFCNT_inc (rv_diehook);	1203	PL_diehook = SvREFCNT_inc (rv_diehook);
1092	PL_warnhook = SvREFCNT_inc (rv_warnhook);	1204	PL_warnhook = SvREFCNT_inc (rv_warnhook);
1093		1205
1094	GvSV (PL_defgv) = newSV (0);	1206	GvSV (PL_defgv) = newSV (0);
1095	GvAV (PL_defgv) = coro->args; coro->args = 0;	1207	GvAV (PL_defgv) = coro->args; coro->args = 0;
1096	GvSV (PL_errgv) = newSV (0);	1208	GvSV (PL_errgv) = newSV (0);
1097	GvSV (irsgv) = newSVpvn ("\n", 1); sv_magic (GvSV (irsgv), (SV *)irsgv, PERL_MAGIC_sv, "/", 0);	1209	GvSV (irsgv) = newSVpvn ("\n", 1); sv_magic (GvSV (irsgv), (SV *)irsgv, PERL_MAGIC_sv, "/", 0);
1098	GvHV (PL_hintgv) = 0;	1210	GvHV (PL_hintgv) = newHV ();
		1211	#if PERL_VERSION_ATLEAST (5,10,0)
		1212	hv_magic (GvHV (PL_hintgv), 0, PERL_MAGIC_hints);
		1213	#endif
1099	PL_rs = newSVsv (GvSV (irsgv));	1214	PL_rs = newSVsv (GvSV (irsgv));
1100	PL_defoutgv = (GV *)SvREFCNT_inc_NN (stdoutgv);	1215	PL_defoutgv = (GV *)SvREFCNT_inc_NN (stdoutgv);
1101		1216
1102	{	1217	{
1103	dSP;	1218	dSP;
…		…
1107	myop.op_next = Nullop;	1222	myop.op_next = Nullop;
1108	myop.op_type = OP_ENTERSUB;	1223	myop.op_type = OP_ENTERSUB;
1109	myop.op_flags = OPf_WANT_VOID;	1224	myop.op_flags = OPf_WANT_VOID;
1110		1225
1111	PUSHMARK (SP);	1226	PUSHMARK (SP);
1112	PUSHs ((SV *)coro->startcv);	1227	XPUSHs ((SV *)coro->startcv);
1113	PUTBACK;	1228	PUTBACK;
1114	PL_op = (OP *)&myop;	1229	PL_op = (OP *)&myop;
1115	PL_op = PL_ppaddr[OP_ENTERSUB](aTHX);	1230	PL_op = PL_ppaddr[OP_ENTERSUB](aTHX);
1116	}	1231	}
1117		1232
…		…
1131	PL_op = (OP *)&init_perl_op;	1246	PL_op = (OP *)&init_perl_op;
1132		1247
1133	/* copy throw, in case it was set before init_perl */	1248	/* copy throw, in case it was set before init_perl */
1134	CORO_THROW = coro->except;	1249	CORO_THROW = coro->except;
1135		1250
1136	SWAP_SVS (coro);	1251	SWAP_SVS_ENTER (coro);
1137		1252
1138	if (expect_false (enable_times))	1253	if (ecb_expect_false (enable_times))
1139	{	1254	{
1140	coro_times_update ();	1255	coro_times_update ();
1141	coro_times_sub (coro);	1256	coro_times_sub (coro);
1142	}	1257	}
1143	}	1258	}
…		…
1179	/* this will cause transfer_check to croak on block*/	1294	/* this will cause transfer_check to croak on block*/
1180	SvRV_set (coro_current, (SV *)coro->hv);	1295	SvRV_set (coro_current, (SV *)coro->hv);
1181		1296
1182	load_perl (aTHX_ coro);	1297	load_perl (aTHX_ coro);
1183		1298
		1299	/* restore swapped sv's */
		1300	SWAP_SVS_LEAVE (coro);
		1301
1184	coro_unwind_stacks (aTHX);	1302	coro_unwind_stacks (aTHX);
1185		1303
1186	/* restore swapped sv's */
1187	SWAP_SVS (coro);
1188
1189	coro_destruct_stacks (aTHX);	1304	coro_destruct_stacks (aTHX);
1190		1305
1191	// now save some sv's to be free'd later	1306	/* now save some sv's to be free'd later */
1192	svf [0] = GvSV (PL_defgv);	1307	svf [0] = GvSV (PL_defgv);
1193	svf [1] = (SV *)GvAV (PL_defgv);	1308	svf [1] = (SV *)GvAV (PL_defgv);
1194	svf [2] = GvSV (PL_errgv);	1309	svf [2] = GvSV (PL_errgv);
1195	svf [3] = (SV *)PL_defoutgv;	1310	svf [3] = (SV *)PL_defoutgv;
1196	svf [4] = PL_rs;	1311	svf [4] = PL_rs;
…		…
1213		1328
1214	SvREFCNT_dec (coro->saved_deffh);	1329	SvREFCNT_dec (coro->saved_deffh);
1215	SvREFCNT_dec (coro->rouse_cb);	1330	SvREFCNT_dec (coro->rouse_cb);
1216	SvREFCNT_dec (coro->invoke_cb);	1331	SvREFCNT_dec (coro->invoke_cb);
1217	SvREFCNT_dec (coro->invoke_av);	1332	SvREFCNT_dec (coro->invoke_av);
		1333	SvREFCNT_dec (coro->on_enter_xs);
		1334	SvREFCNT_dec (coro->on_leave_xs);
1218	}	1335	}
1219	}	1336	}
1220		1337
1221	INLINE void	1338	ecb_inline void
1222	free_coro_mortal (pTHX)	1339	free_coro_mortal (pTHX)
1223	{	1340	{
1224	if (expect_true (coro_mortal))	1341	if (ecb_expect_true (coro_mortal))
1225	{	1342	{
1226	SvREFCNT_dec ((SV *)coro_mortal);	1343	SvREFCNT_dec ((SV *)coro_mortal);
1227	coro_mortal = 0;	1344	coro_mortal = 0;
1228	}	1345	}
1229	}	1346	}
…		…
1263	av_push (av, SvREFCNT_inc_NN (*bot++));	1380	av_push (av, SvREFCNT_inc_NN (*bot++));
1264		1381
1265	PL_runops = RUNOPS_DEFAULT;	1382	PL_runops = RUNOPS_DEFAULT;
1266	ENTER;	1383	ENTER;
1267	SAVETMPS;	1384	SAVETMPS;
		1385	PUSHMARK (SP);
1268	EXTEND (SP, 3);	1386	EXTEND (SP, 3);
1269	PUSHMARK (SP);
1270	PUSHs (&PL_sv_no);	1387	PUSHs (&PL_sv_no);
1271	PUSHs (fullname);	1388	PUSHs (fullname);
1272	PUSHs (sv_2mortal (newRV_noinc ((SV *)av)));	1389	PUSHs (sv_2mortal (newRV_noinc ((SV *)av)));
1273	PUTBACK;	1390	PUTBACK;
1274	cb = hv_fetch ((HV *)SvRV (coro_current), "_trace_sub_cb", sizeof ("_trace_sub_cb") - 1, 0);	1391	cb = hv_fetch ((HV *)SvRV (coro_current), "_trace_sub_cb", sizeof ("_trace_sub_cb") - 1, 0);
…		…
1285		1402
1286	if (PL_curcop != &PL_compiling)	1403	if (PL_curcop != &PL_compiling)
1287	{	1404	{
1288	SV **cb;	1405	SV **cb;
1289		1406
1290	if (oldcxix != cxstack_ix && cctx_current->flags & CC_TRACE_SUB)	1407	if (oldcxix != cxstack_ix && cctx_current->flags & CC_TRACE_SUB && cxstack_ix >= 0)
1291	{	1408	{
1292	PERL_CONTEXT *cx = &cxstack[cxstack_ix];	1409	PERL_CONTEXT *cx = &cxstack[cxstack_ix];
1293		1410
1294	if (CxTYPE (cx) == CXt_SUB && oldcxix < cxstack_ix)	1411	if (CxTYPE (cx) == CXt_SUB && oldcxix < cxstack_ix)
1295	{	1412	{
…		…
1301	gv_efullname3 (fullname, gv, 0);	1418	gv_efullname3 (fullname, gv, 0);
1302		1419
1303	PL_runops = RUNOPS_DEFAULT;	1420	PL_runops = RUNOPS_DEFAULT;
1304	ENTER;	1421	ENTER;
1305	SAVETMPS;	1422	SAVETMPS;
		1423	PUSHMARK (SP);
1306	EXTEND (SP, 3);	1424	EXTEND (SP, 3);
1307	PUSHMARK (SP);
1308	PUSHs (&PL_sv_yes);	1425	PUSHs (&PL_sv_yes);
1309	PUSHs (fullname);	1426	PUSHs (fullname);
1310	PUSHs (CxHASARGS (cx) ? sv_2mortal (newRV_inc ((SV *)cx->blk_sub.argarray)) : &PL_sv_undef);	1427	PUSHs (CxHASARGS (cx) ? sv_2mortal (newRV_inc (SUB_ARGARRAY)) : &PL_sv_undef);
1311	PUTBACK;	1428	PUTBACK;
1312	cb = hv_fetch ((HV *)SvRV (coro_current), "_trace_sub_cb", sizeof ("_trace_sub_cb") - 1, 0);	1429	cb = hv_fetch ((HV *)SvRV (coro_current), "_trace_sub_cb", sizeof ("_trace_sub_cb") - 1, 0);
1313	if (cb) call_sv (*cb, G_KEEPERR | G_EVAL | G_VOID | G_DISCARD);	1430	if (cb) call_sv (*cb, G_KEEPERR | G_EVAL | G_VOID | G_DISCARD);
1314	SPAGAIN;	1431	SPAGAIN;
1315	FREETMPS;	1432	FREETMPS;
…		…
1325	dSP;	1442	dSP;
1326		1443
1327	PL_runops = RUNOPS_DEFAULT;	1444	PL_runops = RUNOPS_DEFAULT;
1328	ENTER;	1445	ENTER;
1329	SAVETMPS;	1446	SAVETMPS;
1330	EXTEND (SP, 3);
1331	PL_runops = RUNOPS_DEFAULT;
1332	PUSHMARK (SP);	1447	PUSHMARK (SP);
		1448	EXTEND (SP, 2);
1333	PUSHs (sv_2mortal (newSVpv (OutCopFILE (oldcop), 0)));	1449	PUSHs (sv_2mortal (newSVpv (OutCopFILE (oldcop), 0)));
1334	PUSHs (sv_2mortal (newSViv (CopLINE (oldcop))));	1450	PUSHs (sv_2mortal (newSViv (CopLINE (oldcop))));
1335	PUTBACK;	1451	PUTBACK;
1336	cb = hv_fetch ((HV *)SvRV (coro_current), "_trace_line_cb", sizeof ("_trace_line_cb") - 1, 0);	1452	cb = hv_fetch ((HV *)SvRV (coro_current), "_trace_line_cb", sizeof ("_trace_line_cb") - 1, 0);
1337	if (cb) call_sv (*cb, G_KEEPERR | G_EVAL | G_VOID | G_DISCARD);	1453	if (cb) call_sv (*cb, G_KEEPERR | G_EVAL | G_VOID | G_DISCARD);
…		…
1364		1480
1365	return frame->check (aTHX_ frame); /* execute the restored frame - there must be one */	1481	return frame->check (aTHX_ frame); /* execute the restored frame - there must be one */
1366	}	1482	}
1367		1483
1368	/* initialises PL_top_env and injects a pseudo-slf-call to set the stacklevel */	1484	/* initialises PL_top_env and injects a pseudo-slf-call to set the stacklevel */
1369	static void NOINLINE	1485	static void ecb_noinline
1370	cctx_prepare (pTHX)	1486	cctx_prepare (pTHX)
1371	{	1487	{
1372	PL_top_env = &PL_start_env;	1488	PL_top_env = &PL_start_env;
1373		1489
1374	if (cctx_current->flags & CC_TRACE)	1490	if (cctx_current->flags & CC_TRACE)
…		…
1385	slf_frame.prepare = slf_prepare_set_stacklevel;	1501	slf_frame.prepare = slf_prepare_set_stacklevel;
1386	slf_frame.check = slf_check_set_stacklevel;	1502	slf_frame.check = slf_check_set_stacklevel;
1387	}	1503	}
1388		1504
1389	/* the tail of transfer: execute stuff we can only do after a transfer */	1505	/* the tail of transfer: execute stuff we can only do after a transfer */
1390	INLINE void	1506	ecb_inline void
1391	transfer_tail (pTHX)	1507	transfer_tail (pTHX)
1392	{	1508	{
1393	free_coro_mortal (aTHX);	1509	free_coro_mortal (aTHX);
		1510	}
		1511
		1512	/* try to exit the same way perl's main function would do */
		1513	/* we do not bother resetting the environment or other things *7
		1514	/* that are not, uhm, essential */
		1515	/* this obviously also doesn't work when perl is embedded */
		1516	static void ecb_noinline ecb_cold
		1517	perlish_exit (pTHX)
		1518	{
		1519	int exitstatus = perl_destruct (PL_curinterp);
		1520	perl_free (PL_curinterp);
		1521	exit (exitstatus);
1394	}	1522	}
1395		1523
1396	/*	1524	/*
1397	* this is a _very_ stripped down perl interpreter ;)	1525	* this is a _very_ stripped down perl interpreter ;)
1398	*/	1526	*/
…		…
1425	* coro body here, as perl_run destroys these. Likewise, we cannot catch	1553	* coro body here, as perl_run destroys these. Likewise, we cannot catch
1426	* runtime errors here, as this is just a random interpreter, not a thread.	1554	* runtime errors here, as this is just a random interpreter, not a thread.
1427	*/	1555	*/
1428		1556
1429	/*	1557	/*
		1558	* pp_entersub in 5.24 no longer ENTERs, but perl_destruct
		1559	* requires PL_scopestack_ix, so do it here if required.
		1560	*/
		1561	if (!PL_scopestack_ix)
		1562	ENTER;
		1563
		1564	/*
1430	* If perl-run returns we assume exit() was being called or the coro	1565	* If perl-run returns we assume exit() was being called or the coro
1431	* fell off the end, which seems to be the only valid (non-bug)	1566	* fell off the end, which seems to be the only valid (non-bug)
1432	* reason for perl_run to return. We try to exit by jumping to the	1567	* reason for perl_run to return. We try to mimic whatever perl is normally
1433	* bootstrap-time "top" top_env, as we cannot restore the "main"	1568	* doing in that case. YMMV.
1434	* coroutine as Coro has no such concept.
1435	* This actually isn't valid with the pthread backend, but OSes requiring
1436	* that backend are too broken to do it in a standards-compliant way.
1437	*/	1569	*/
1438	PL_top_env = main_top_env;	1570	perlish_exit (aTHX);
1439	JMPENV_JUMP (2); /* I do not feel well about the hardcoded 2 at all */
1440	}	1571	}
1441	}	1572	}
1442		1573
1443	static coro_cctx *	1574	static coro_cctx *
1444	cctx_new ()	1575	cctx_new (void)
1445	{	1576	{
1446	coro_cctx *cctx;	1577	coro_cctx *cctx;
1447		1578
1448	++cctx_count;	1579	++cctx_count;
1449	New (0, cctx, 1, coro_cctx);	1580	New (0, cctx, 1, coro_cctx);
…		…
1455	return cctx;	1586	return cctx;
1456	}	1587	}
1457		1588
1458	/* create a new cctx only suitable as source */	1589	/* create a new cctx only suitable as source */
1459	static coro_cctx *	1590	static coro_cctx *
1460	cctx_new_empty ()	1591	cctx_new_empty (void)
1461	{	1592	{
1462	coro_cctx *cctx = cctx_new ();	1593	coro_cctx *cctx = cctx_new ();
1463		1594
1464	cctx->sptr = 0;	1595	cctx->stack.sptr = 0;
1465	coro_create (&cctx->cctx, 0, 0, 0, 0);	1596	coro_create (&cctx->cctx, 0, 0, 0, 0);
1466		1597
1467	return cctx;	1598	return cctx;
1468	}	1599	}
1469		1600
1470	/* create a new cctx suitable as destination/running a perl interpreter */	1601	/* create a new cctx suitable as destination/running a perl interpreter */
1471	static coro_cctx *	1602	static coro_cctx *
1472	cctx_new_run ()	1603	cctx_new_run (void)
1473	{	1604	{
1474	coro_cctx *cctx = cctx_new ();	1605	coro_cctx *cctx = cctx_new ();
1475	void *stack_start;
1476	size_t stack_size;
1477		1606
1478	#if HAVE_MMAP	1607	if (!coro_stack_alloc (&cctx->stack, cctx_stacksize))
1479	cctx->ssize = ((cctx_stacksize * sizeof (long) + PAGESIZE - 1) / PAGESIZE + CORO_STACKGUARD) * PAGESIZE;
1480	/* mmap supposedly does allocate-on-write for us */
1481	cctx->sptr = mmap (0, cctx->ssize, PROT_EXEC|PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, 0, 0);
1482
1483	if (cctx->sptr != (void *)-1)
1484	{
1485	#if CORO_STACKGUARD
1486	mprotect (cctx->sptr, CORO_STACKGUARD * PAGESIZE, PROT_NONE);
1487	#endif
1488	stack_start = (char *)cctx->sptr + CORO_STACKGUARD * PAGESIZE;
1489	stack_size = cctx->ssize - CORO_STACKGUARD * PAGESIZE;
1490	cctx->flags |= CC_MAPPED;
1491	}	1608	{
1492	else
1493	#endif
1494	{
1495	cctx->ssize = cctx_stacksize * (long)sizeof (long);
1496	New (0, cctx->sptr, cctx_stacksize, long);
1497
1498	if (!cctx->sptr)
1499	{
1500	perror ("FATAL: unable to allocate stack for coroutine, exiting.");	1609	perror ("FATAL: unable to allocate stack for coroutine, exiting.");
1501	_exit (EXIT_FAILURE);	1610	_exit (EXIT_FAILURE);
1502	}
1503
1504	stack_start = cctx->sptr;
1505	stack_size = cctx->ssize;
1506	}	1611	}
1507		1612
1508	#if CORO_USE_VALGRIND
1509	cctx->valgrind_id = VALGRIND_STACK_REGISTER ((char *)stack_start, (char *)stack_start + stack_size);
1510	#endif
1511
1512	coro_create (&cctx->cctx, cctx_run, (void *)cctx, stack_start, stack_size);	1613	coro_create (&cctx->cctx, cctx_run, (void *)cctx, cctx->stack.sptr, cctx->stack.ssze);
1513		1614
1514	return cctx;	1615	return cctx;
1515	}	1616	}
1516		1617
1517	static void	1618	static void
…		…
1523	assert (("FATAL: tried to destroy current cctx", cctx != cctx_current));	1624	assert (("FATAL: tried to destroy current cctx", cctx != cctx_current));
1524		1625
1525	--cctx_count;	1626	--cctx_count;
1526	coro_destroy (&cctx->cctx);	1627	coro_destroy (&cctx->cctx);
1527		1628
1528	/* coro_transfer creates new, empty cctx's */	1629	coro_stack_free (&cctx->stack);
1529	if (cctx->sptr)
1530	{
1531	#if CORO_USE_VALGRIND
1532	VALGRIND_STACK_DEREGISTER (cctx->valgrind_id);
1533	#endif
1534
1535	#if HAVE_MMAP
1536	if (cctx->flags & CC_MAPPED)
1537	munmap (cctx->sptr, cctx->ssize);
1538	else
1539	#endif
1540	Safefree (cctx->sptr);
1541	}
1542		1630
1543	Safefree (cctx);	1631	Safefree (cctx);
1544	}	1632	}
1545		1633
1546	/* wether this cctx should be destructed */	1634	/* wether this cctx should be destructed */
1547	#define CCTX_EXPIRED(cctx) ((cctx)->gen != cctx_gen || ((cctx)->flags & CC_NOREUSE))	1635	#define CCTX_EXPIRED(cctx) ((cctx)->gen != cctx_gen || ((cctx)->flags & CC_NOREUSE))
1548		1636
1549	static coro_cctx *	1637	static coro_cctx *
1550	cctx_get (pTHX)	1638	cctx_get (pTHX)
1551	{	1639	{
1552	while (expect_true (cctx_first))	1640	while (ecb_expect_true (cctx_first))
1553	{	1641	{
1554	coro_cctx *cctx = cctx_first;	1642	coro_cctx *cctx = cctx_first;
1555	cctx_first = cctx->next;	1643	cctx_first = cctx->next;
1556	--cctx_idle;	1644	--cctx_idle;
1557		1645
1558	if (expect_true (!CCTX_EXPIRED (cctx)))	1646	if (ecb_expect_true (!CCTX_EXPIRED (cctx)))
1559	return cctx;	1647	return cctx;
1560		1648
1561	cctx_destroy (cctx);	1649	cctx_destroy (cctx);
1562	}	1650	}
1563		1651
…		…
1565	}	1653	}
1566		1654
1567	static void	1655	static void
1568	cctx_put (coro_cctx *cctx)	1656	cctx_put (coro_cctx *cctx)
1569	{	1657	{
1570	assert (("FATAL: cctx_put called on non-initialised cctx in Coro (please report)", cctx->sptr));	1658	assert (("FATAL: cctx_put called on non-initialised cctx in Coro (please report)", cctx->stack.sptr));
1571		1659
1572	/* free another cctx if overlimit */	1660	/* free another cctx if overlimit */
1573	if (expect_false (cctx_idle >= cctx_max_idle))	1661	if (ecb_expect_false (cctx_idle >= cctx_max_idle))
1574	{	1662	{
1575	coro_cctx *first = cctx_first;	1663	coro_cctx *first = cctx_first;
1576	cctx_first = first->next;	1664	cctx_first = first->next;
1577	--cctx_idle;	1665	--cctx_idle;
1578		1666
…		…
1589	static void	1677	static void
1590	transfer_check (pTHX_ struct coro *prev, struct coro *next)	1678	transfer_check (pTHX_ struct coro *prev, struct coro *next)
1591	{	1679	{
1592	/* TODO: throwing up here is considered harmful */	1680	/* TODO: throwing up here is considered harmful */
1593		1681
1594	if (expect_true (prev != next))	1682	if (ecb_expect_true (prev != next))
1595	{	1683	{
1596	if (expect_false (!(prev->flags & (CF_RUNNING | CF_NEW))))	1684	if (ecb_expect_false (!(prev->flags & (CF_RUNNING | CF_NEW))))
1597	croak ("Coro::State::transfer called with a blocked prev Coro::State, but can only transfer from running or new states,");	1685	croak ("Coro::State::transfer called with a blocked prev Coro::State, but can only transfer from running or new states,");
1598		1686
1599	if (expect_false (next->flags & (CF_RUNNING | CF_ZOMBIE | CF_SUSPENDED)))	1687	if (ecb_expect_false (next->flags & (CF_RUNNING | CF_ZOMBIE | CF_SUSPENDED)))
1600	croak ("Coro::State::transfer called with running, destroyed or suspended next Coro::State, but can only transfer to inactive states,");	1688	croak ("Coro::State::transfer called with running, destroyed or suspended next Coro::State, but can only transfer to inactive states,");
1601		1689
1602	#if !PERL_VERSION_ATLEAST (5,10,0)	1690	#if !PERL_VERSION_ATLEAST (5,10,0)
1603	if (expect_false (PL_lex_state != LEX_NOTPARSING))	1691	if (ecb_expect_false (PL_lex_state != LEX_NOTPARSING))
1604	croak ("Coro::State::transfer called while parsing, but this is not supported in your perl version,");	1692	croak ("Coro::State::transfer called while parsing, but this is not supported in your perl version,");
1605	#endif	1693	#endif
1606	}	1694	}
1607	}	1695	}
1608		1696
1609	/* always use the TRANSFER macro */	1697	/* always use the TRANSFER macro */
1610	static void NOINLINE /* noinline so we have a fixed stackframe */	1698	static void ecb_noinline /* noinline so we have a fixed stackframe */
1611	transfer (pTHX_ struct coro *prev, struct coro *next, int force_cctx)	1699	transfer (pTHX_ struct coro *prev, struct coro *next, int force_cctx)
1612	{	1700	{
1613	dSTACKLEVEL;	1701	dSTACKLEVEL;
1614		1702
1615	/* sometimes transfer is only called to set idle_sp */	1703	/* sometimes transfer is only called to set idle_sp */
1616	if (expect_false (!prev))	1704	if (ecb_expect_false (!prev))
1617	{	1705	{
1618	cctx_current->idle_sp = STACKLEVEL;	1706	cctx_current->idle_sp = STACKLEVEL;
1619	assert (cctx_current->idle_te = PL_top_env); /* just for the side-effect when asserts are enabled */	1707	assert (cctx_current->idle_te = PL_top_env); /* just for the side-effect when asserts are enabled */
1620	}	1708	}
1621	else if (expect_true (prev != next))	1709	else if (ecb_expect_true (prev != next))
1622	{	1710	{
1623	coro_cctx *cctx_prev;	1711	coro_cctx *cctx_prev;
1624		1712
1625	if (expect_false (prev->flags & CF_NEW))	1713	if (ecb_expect_false (prev->flags & CF_NEW))
1626	{	1714	{
1627	/* create a new empty/source context */	1715	/* create a new empty/source context */
1628	prev->flags &= ~CF_NEW;	1716	prev->flags &= ~CF_NEW;
1629	prev->flags |= CF_RUNNING;	1717	prev->flags |= CF_RUNNING;
1630	}	1718	}
…		…
1633	next->flags |= CF_RUNNING;	1721	next->flags |= CF_RUNNING;
1634		1722
1635	/* first get rid of the old state */	1723	/* first get rid of the old state */
1636	save_perl (aTHX_ prev);	1724	save_perl (aTHX_ prev);
1637		1725
1638	if (expect_false (next->flags & CF_NEW))	1726	if (ecb_expect_false (next->flags & CF_NEW))
1639	{	1727	{
1640	/* need to start coroutine */	1728	/* need to start coroutine */
1641	next->flags &= ~CF_NEW;	1729	next->flags &= ~CF_NEW;
1642	/* setup coroutine call */	1730	/* setup coroutine call */
1643	init_perl (aTHX_ next);	1731	init_perl (aTHX_ next);
1644	}	1732	}
1645	else	1733	else
1646	load_perl (aTHX_ next);	1734	load_perl (aTHX_ next);
1647		1735
1648	/* possibly untie and reuse the cctx */	1736	/* possibly untie and reuse the cctx */
1649	if (expect_true (	1737	if (ecb_expect_true (
1650	cctx_current->idle_sp == STACKLEVEL	1738	cctx_current->idle_sp == STACKLEVEL
1651	&& !(cctx_current->flags & CC_TRACE)	1739	&& !(cctx_current->flags & CC_TRACE)
1652	&& !force_cctx	1740	&& !force_cctx
1653	))	1741	))
1654	{	1742	{
1655	/* I assume that stacklevel is a stronger indicator than PL_top_env changes */	1743	/* I assume that stacklevel is a stronger indicator than PL_top_env changes */
1656	assert (("FATAL: current top_env must equal previous top_env in Coro (please report)", PL_top_env == cctx_current->idle_te));	1744	assert (("FATAL: current top_env must equal previous top_env in Coro (please report)", PL_top_env == cctx_current->idle_te));
1657		1745
1658	/* if the cctx is about to be destroyed we need to make sure we won't see it in cctx_get. */	1746	/* if the cctx is about to be destroyed we need to make sure we won't see it in cctx_get. */
1659	/* without this the next cctx_get might destroy the running cctx while still in use */	1747	/* without this the next cctx_get might destroy the running cctx while still in use */
1660	if (expect_false (CCTX_EXPIRED (cctx_current)))	1748	if (ecb_expect_false (CCTX_EXPIRED (cctx_current)))
1661	if (expect_true (!next->cctx))	1749	if (ecb_expect_true (!next->cctx))
1662	next->cctx = cctx_get (aTHX);	1750	next->cctx = cctx_get (aTHX);
1663		1751
1664	cctx_put (cctx_current);	1752	cctx_put (cctx_current);
1665	}	1753	}
1666	else	1754	else
1667	prev->cctx = cctx_current;	1755	prev->cctx = cctx_current;
1668		1756
1669	++next->usecount;	1757	++next->usecount;
1670		1758
1671	cctx_prev = cctx_current;	1759	cctx_prev = cctx_current;
1672	cctx_current = expect_false (next->cctx) ? next->cctx : cctx_get (aTHX);	1760	cctx_current = ecb_expect_false (next->cctx) ? next->cctx : cctx_get (aTHX);
1673		1761
1674	next->cctx = 0;	1762	next->cctx = 0;
1675		1763
1676	if (expect_false (cctx_prev != cctx_current))	1764	if (ecb_expect_false (cctx_prev != cctx_current))
1677	{	1765	{
1678	cctx_prev->top_env = PL_top_env;	1766	cctx_prev->top_env = PL_top_env;
1679	PL_top_env = cctx_current->top_env;	1767	PL_top_env = cctx_current->top_env;
1680	coro_transfer (&cctx_prev->cctx, &cctx_current->cctx);	1768	coro_transfer (&cctx_prev->cctx, &cctx_current->cctx);
1681	}	1769	}
…		…
1701	return;	1789	return;
1702		1790
1703	slf_destroy (aTHX_ coro);	1791	slf_destroy (aTHX_ coro);
1704		1792
1705	coro->flags |= CF_ZOMBIE;	1793	coro->flags |= CF_ZOMBIE;
1706		1794
1707	if (coro->flags & CF_READY)	1795	if (coro->flags & CF_READY)
1708	{	1796	{
1709	/* reduce nready, as destroying a ready coro effectively unreadies it */	1797	/* reduce nready, as destroying a ready coro effectively unreadies it */
1710	/* alternative: look through all ready queues and remove the coro */	1798	/* alternative: look through all ready queues and remove the coro */
1711	--coro_nready;	1799	--coro_nready;
…		…
1747	Safefree (coro);	1835	Safefree (coro);
1748		1836
1749	return 0;	1837	return 0;
1750	}	1838	}
1751		1839
1752	static int	1840	static int ecb_cold
1753	coro_state_dup (pTHX_ MAGIC *mg, CLONE_PARAMS *params)	1841	coro_state_dup (pTHX_ MAGIC *mg, CLONE_PARAMS *params)
1754	{	1842	{
1755	/* called when perl clones the current process the slow way (windows process emulation) */	1843	/* called when perl clones the current process the slow way (windows process emulation) */
1756	/* WE SIMply nuke the pointers in the copy, causing perl to croak */	1844	/* WE SIMply nuke the pointers in the copy, causing perl to croak */
1757	mg->mg_ptr = 0;	1845	mg->mg_ptr = 0;
…		…
1788	TRANSFER (ta, 1);	1876	TRANSFER (ta, 1);
1789	}	1877	}
1790		1878
1791	/** Coro ********************************************************************/	1879	/** Coro ********************************************************************/
1792		1880
1793	INLINE void	1881	ecb_inline void
1794	coro_enq (pTHX_ struct coro *coro)	1882	coro_enq (pTHX_ struct coro *coro)
1795	{	1883	{
1796	struct coro **ready = coro_ready [coro->prio - CORO_PRIO_MIN];	1884	struct coro **ready = coro_ready [coro->prio - CORO_PRIO_MIN];
1797		1885
1798	SvREFCNT_inc_NN (coro->hv);	1886	SvREFCNT_inc_NN (coro->hv);
…		…
1800	coro->next_ready = 0;	1888	coro->next_ready = 0;
1801	*(ready [0] ? &ready [1]->next_ready : &ready [0]) = coro;	1889	*(ready [0] ? &ready [1]->next_ready : &ready [0]) = coro;
1802	ready [1] = coro;	1890	ready [1] = coro;
1803	}	1891	}
1804		1892
1805	INLINE struct coro *	1893	ecb_inline struct coro *
1806	coro_deq (pTHX)	1894	coro_deq (pTHX)
1807	{	1895	{
1808	int prio;	1896	int prio;
1809		1897
1810	for (prio = CORO_PRIO_MAX - CORO_PRIO_MIN + 1; --prio >= 0; )	1898	for (prio = CORO_PRIO_MAX - CORO_PRIO_MIN + 1; --prio >= 0; )
…		…
1863	{	1951	{
1864	return !!(SvSTATE (coro_sv)->flags & CF_READY);	1952	return !!(SvSTATE (coro_sv)->flags & CF_READY);
1865	}	1953	}
1866		1954
1867	/* expects to own a reference to next->hv */	1955	/* expects to own a reference to next->hv */
1868	INLINE void	1956	ecb_inline void
1869	prepare_schedule_to (pTHX_ struct coro_transfer_args *ta, struct coro *next)	1957	prepare_schedule_to (pTHX_ struct coro_transfer_args *ta, struct coro *next)
1870	{	1958	{
1871	SV *prev_sv = SvRV (coro_current);	1959	SV *prev_sv = SvRV (coro_current);
1872		1960
1873	ta->prev = SvSTATE_hv (prev_sv);	1961	ta->prev = SvSTATE_hv (prev_sv);
…		…
1886	{	1974	{
1887	for (;;)	1975	for (;;)
1888	{	1976	{
1889	struct coro *next = coro_deq (aTHX);	1977	struct coro *next = coro_deq (aTHX);
1890		1978
1891	if (expect_true (next))	1979	if (ecb_expect_true (next))
1892	{	1980	{
1893	/* cannot transfer to destroyed coros, skip and look for next */	1981	/* cannot transfer to destroyed coros, skip and look for next */
1894	if (expect_false (next->flags & (CF_ZOMBIE | CF_SUSPENDED)))	1982	if (ecb_expect_false (next->flags & (CF_ZOMBIE | CF_SUSPENDED)))
1895	SvREFCNT_dec (next->hv); /* coro_nready has already been taken care of by destroy */	1983	SvREFCNT_dec (next->hv); /* coro_nready has already been taken care of by destroy */
1896	else	1984	else
1897	{	1985	{
1898	next->flags &= ~CF_READY;	1986	next->flags &= ~CF_READY;
1899	--coro_nready;	1987	--coro_nready;
…		…
1907	/* nothing to schedule: call the idle handler */	1995	/* nothing to schedule: call the idle handler */
1908	if (SvROK (sv_idle)	1996	if (SvROK (sv_idle)
1909	&& SvOBJECT (SvRV (sv_idle)))	1997	&& SvOBJECT (SvRV (sv_idle)))
1910	{	1998	{
1911	if (SvRV (sv_idle) == SvRV (coro_current))	1999	if (SvRV (sv_idle) == SvRV (coro_current))
		2000	{
		2001	require_pv ("Carp");
		2002
		2003	{
		2004	dSP;
		2005
		2006	ENTER;
		2007	SAVETMPS;
		2008
		2009	PUSHMARK (SP);
1912	croak ("FATAL: $Coro::IDLE blocked itself - did you try to block inside an event loop callback? Caught");	2010	XPUSHs (sv_2mortal (newSVpv ("FATAL: $Coro::idle blocked itself - did you try to block inside an event loop callback? Caught", 0)));
		2011	PUTBACK;
		2012	call_pv ("Carp::confess", G_VOID | G_DISCARD);
		2013
		2014	FREETMPS;
		2015	LEAVE;
		2016	}
		2017	}
1913		2018
1914	++coro_nready; /* hack so that api_ready doesn't invoke ready hook */	2019	++coro_nready; /* hack so that api_ready doesn't invoke ready hook */
1915	api_ready (aTHX_ SvRV (sv_idle));	2020	api_ready (aTHX_ SvRV (sv_idle));
1916	--coro_nready;	2021	--coro_nready;
1917	}	2022	}
…		…
1932	}	2037	}
1933	}	2038	}
1934	}	2039	}
1935	}	2040	}
1936		2041
1937	INLINE void	2042	ecb_inline void
1938	prepare_cede (pTHX_ struct coro_transfer_args *ta)	2043	prepare_cede (pTHX_ struct coro_transfer_args *ta)
1939	{	2044	{
1940	api_ready (aTHX_ coro_current);	2045	api_ready (aTHX_ coro_current);
1941	prepare_schedule (aTHX_ ta);	2046	prepare_schedule (aTHX_ ta);
1942	}	2047	}
1943		2048
1944	INLINE void	2049	ecb_inline void
1945	prepare_cede_notself (pTHX_ struct coro_transfer_args *ta)	2050	prepare_cede_notself (pTHX_ struct coro_transfer_args *ta)
1946	{	2051	{
1947	SV *prev = SvRV (coro_current);	2052	SV *prev = SvRV (coro_current);
1948		2053
1949	if (coro_nready)	2054	if (coro_nready)
…		…
1979	{	2084	{
1980	struct coro_transfer_args ta;	2085	struct coro_transfer_args ta;
1981		2086
1982	prepare_cede (aTHX_ &ta);	2087	prepare_cede (aTHX_ &ta);
1983		2088
1984	if (expect_true (ta.prev != ta.next))	2089	if (ecb_expect_true (ta.prev != ta.next))
1985	{	2090	{
1986	TRANSFER (ta, 1);	2091	TRANSFER (ta, 1);
1987	return 1;	2092	return 1;
1988	}	2093	}
1989	else	2094	else
…		…
2114	{	2219	{
2115	AV *od = coro->on_destroy;	2220	AV *od = coro->on_destroy;
2116		2221
2117	if (!od)	2222	if (!od)
2118	return;	2223	return;
		2224
		2225	coro->on_destroy = 0;
		2226	sv_2mortal ((SV *)od);
2119		2227
2120	while (AvFILLp (od) >= 0)	2228	while (AvFILLp (od) >= 0)
2121	{	2229	{
2122	SV *cb = sv_2mortal (av_pop (od));	2230	SV *cb = sv_2mortal (av_pop (od));
2123		2231
…		…
2144		2252
2145	static void	2253	static void
2146	coro_set_status (pTHX_ struct coro *coro, SV **arg, int items)	2254	coro_set_status (pTHX_ struct coro *coro, SV **arg, int items)
2147	{	2255	{
2148	AV *av;	2256	AV *av;
2149		2257
2150	if (coro->status)	2258	if (coro->status)
2151	{	2259	{
2152	av = coro->status;	2260	av = coro->status;
2153	av_clear (av);	2261	av_clear (av);
2154	}	2262	}
…		…
2201		2309
2202	coro = SvSTATE (arg [0]);	2310	coro = SvSTATE (arg [0]);
2203	coro_hv = coro->hv;	2311	coro_hv = coro->hv;
2204		2312
2205	coro_set_status (aTHX_ coro, arg + 1, items - 1);	2313	coro_set_status (aTHX_ coro, arg + 1, items - 1);
2206		2314
2207	if (expect_false (coro->flags & CF_NOCANCEL))	2315	if (ecb_expect_false (coro->flags & CF_NOCANCEL))
2208	{	2316	{
2209	/* coro currently busy cancelling something, so just notify it */	2317	/* coro currently busy cancelling something, so just notify it */
2210	coro->slf_frame.data = (void *)coro;	2318	coro->slf_frame.data = (void *)coro;
2211		2319
2212	frame->prepare = prepare_nop;	2320	frame->prepare = prepare_nop;
…		…
2218	slf_init_terminate_cancel_common (aTHX_ frame, coro_hv);	2326	slf_init_terminate_cancel_common (aTHX_ frame, coro_hv);
2219	}	2327	}
2220	else	2328	else
2221	{	2329	{
2222	struct coro *self = SvSTATE_current;	2330	struct coro *self = SvSTATE_current;
		2331
		2332	if (!self)
		2333	croak ("Coro::cancel called outside of thread content,");
2223		2334
2224	/* otherwise we cancel directly, purely for speed reasons	2335	/* otherwise we cancel directly, purely for speed reasons
2225	* unfortunately, this requires some magic trickery, as	2336	* unfortunately, this requires some magic trickery, as
2226	* somebody else could cancel us, so we have to fight the cancellation.	2337	* somebody else could cancel us, so we have to fight the cancellation.
2227	* this is ugly, and hopefully fully worth the extra speed.	2338	* this is ugly, and hopefully fully worth the extra speed.
…		…
2260	safe_cancel (pTHX_ struct coro *coro, SV **arg, int items)	2371	safe_cancel (pTHX_ struct coro *coro, SV **arg, int items)
2261	{	2372	{
2262	if (coro->cctx)	2373	if (coro->cctx)
2263	croak ("coro inside C callback, unable to cancel at this time, caught");	2374	croak ("coro inside C callback, unable to cancel at this time, caught");
2264		2375
2265	if (coro->flags & CF_NEW)	2376	if (coro->flags & (CF_NEW | CF_ZOMBIE))
2266	{	2377	{
2267	coro_set_status (aTHX_ coro, arg, items);	2378	coro_set_status (aTHX_ coro, arg, items);
2268	coro_state_destroy (aTHX_ coro);	2379	coro_state_destroy (aTHX_ coro);
2269	}	2380	}
2270	else	2381	else
…		…
2320	slf_init_pool_handler (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)	2431	slf_init_pool_handler (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
2321	{	2432	{
2322	HV *hv = (HV *)SvRV (coro_current);	2433	HV *hv = (HV *)SvRV (coro_current);
2323	struct coro *coro = SvSTATE_hv ((SV *)hv);	2434	struct coro *coro = SvSTATE_hv ((SV *)hv);
2324		2435
2325	if (expect_true (coro->saved_deffh))	2436	if (ecb_expect_true (coro->saved_deffh))
2326	{	2437	{
2327	/* subsequent iteration */	2438	/* subsequent iteration */
2328	SvREFCNT_dec ((SV *)PL_defoutgv); PL_defoutgv = (GV *)coro->saved_deffh;	2439	SvREFCNT_dec ((SV *)PL_defoutgv); PL_defoutgv = (GV *)coro->saved_deffh;
2329	coro->saved_deffh = 0;	2440	coro->saved_deffh = 0;
2330		2441
…		…
2337	else	2448	else
2338	{	2449	{
2339	av_clear (GvAV (PL_defgv));	2450	av_clear (GvAV (PL_defgv));
2340	hv_store (hv, "desc", sizeof ("desc") - 1, SvREFCNT_inc_NN (sv_async_pool_idle), 0);	2451	hv_store (hv, "desc", sizeof ("desc") - 1, SvREFCNT_inc_NN (sv_async_pool_idle), 0);
2341		2452
		2453	if (ecb_expect_false (coro->swap_sv))
		2454	{
		2455	SWAP_SVS_LEAVE (coro);
		2456	SvREFCNT_dec_NN (coro->swap_sv);
		2457	coro->swap_sv = 0;
		2458	}
		2459
2342	coro->prio = 0;	2460	coro->prio = 0;
2343		2461
2344	if (coro->cctx && (coro->cctx->flags & CC_TRACE))	2462	if (ecb_expect_false (coro->cctx) && ecb_expect_false (coro->cctx->flags & CC_TRACE))
2345	api_trace (aTHX_ coro_current, 0);	2463	api_trace (aTHX_ coro_current, 0);
2346		2464
2347	frame->prepare = prepare_schedule;	2465	frame->prepare = prepare_schedule;
2348	av_push (av_async_pool, SvREFCNT_inc (hv));	2466	av_push (av_async_pool, SvREFCNT_inc (hv));
2349	}	2467	}
…		…
2390		2508
2391	static int	2509	static int
2392	slf_check_rouse_wait (pTHX_ struct CoroSLF *frame)	2510	slf_check_rouse_wait (pTHX_ struct CoroSLF *frame)
2393	{	2511	{
2394	SV *data = (SV *)frame->data;	2512	SV *data = (SV *)frame->data;
2395		2513
2396	if (CORO_THROW)	2514	if (CORO_THROW)
2397	return 0;	2515	return 0;
2398		2516
2399	if (SvTYPE (SvRV (data)) != SVt_PVAV)	2517	if (SvTYPE (SvRV (data)) != SVt_PVAV)
2400	return 1;	2518	return 1;
…		…
2436	cb = sv_2mortal (coro->rouse_cb);	2554	cb = sv_2mortal (coro->rouse_cb);
2437	coro->rouse_cb = 0;	2555	coro->rouse_cb = 0;
2438	}	2556	}
2439		2557
2440	if (!SvROK (cb)	2558	if (!SvROK (cb)
2441	|| SvTYPE (SvRV (cb)) != SVt_PVCV	2559	|| SvTYPE (SvRV (cb)) != SVt_PVCV
2442	|| CvXSUB ((CV *)SvRV (cb)) != coro_rouse_callback)	2560	|| CvXSUB ((CV *)SvRV (cb)) != coro_rouse_callback)
2443	croak ("Coro::rouse_wait called with illegal callback argument,");	2561	croak ("Coro::rouse_wait called with illegal callback argument,");
2444		2562
2445	{	2563	{
2446	CV *cv = (CV *)SvRV (cb); /* for S_GENSUB_ARG */	2564	CV *cv = (CV *)SvRV (cb); /* for S_GENSUB_ARG */
…		…
2569		2687
2570	/* "undo"/cancel a running slf call - used when cancelling a coro, mainly */	2688	/* "undo"/cancel a running slf call - used when cancelling a coro, mainly */
2571	static void	2689	static void
2572	slf_destroy (pTHX_ struct coro *coro)	2690	slf_destroy (pTHX_ struct coro *coro)
2573	{	2691	{
2574	/* this callback is reserved for slf functions needing to do cleanup */	2692	struct CoroSLF frame = coro->slf_frame;
2575	if (coro->slf_frame.destroy && coro->slf_frame.prepare && !PL_dirty)
2576	coro->slf_frame.destroy (aTHX_ &coro->slf_frame);
2577		2693
2578	/*	2694	/*
2579	* The on_destroy above most likely is from an SLF call.	2695	* The on_destroy below most likely is from an SLF call.
2580	* Since by definition the SLF call will not finish when we destroy	2696	* Since by definition the SLF call will not finish when we destroy
2581	* the coro, we will have to force-finish it here, otherwise	2697	* the coro, we will have to force-finish it here, otherwise
2582	* cleanup functions cannot call SLF functions.	2698	* cleanup functions cannot call SLF functions.
2583	*/	2699	*/
2584	coro->slf_frame.prepare = 0;	2700	coro->slf_frame.prepare = 0;
		2701
		2702	/* this callback is reserved for slf functions needing to do cleanup */
		2703	if (frame.destroy && frame.prepare && !PL_dirty)
		2704	frame.destroy (aTHX_ &frame);
2585	}	2705	}
2586		2706
2587	/*	2707	/*
2588	* these not obviously related functions are all rolled into one	2708	* these not obviously related functions are all rolled into one
2589	* function to increase chances that they all will call transfer with the same	2709	* function to increase chances that they all will call transfer with the same
…		…
2596	I32 checkmark; /* mark SP to see how many elements check has pushed */	2716	I32 checkmark; /* mark SP to see how many elements check has pushed */
2597		2717
2598	/* set up the slf frame, unless it has already been set-up */	2718	/* set up the slf frame, unless it has already been set-up */
2599	/* the latter happens when a new coro has been started */	2719	/* the latter happens when a new coro has been started */
2600	/* or when a new cctx was attached to an existing coroutine */	2720	/* or when a new cctx was attached to an existing coroutine */
2601	if (expect_true (!slf_frame.prepare))	2721	if (ecb_expect_true (!slf_frame.prepare))
2602	{	2722	{
2603	/* first iteration */	2723	/* first iteration */
2604	dSP;	2724	dSP;
2605	SV **arg = PL_stack_base + TOPMARK + 1;	2725	SV **arg = PL_stack_base + TOPMARK + 1;
2606	int items = SP - arg; /* args without function object */	2726	int items = SP - arg; /* args without function object */
…		…
2647	while (slf_frame.check (aTHX_ &slf_frame));	2767	while (slf_frame.check (aTHX_ &slf_frame));
2648		2768
2649	slf_frame.prepare = 0; /* invalidate the frame, we are done processing it */	2769	slf_frame.prepare = 0; /* invalidate the frame, we are done processing it */
2650		2770
2651	/* exception handling */	2771	/* exception handling */
2652	if (expect_false (CORO_THROW))	2772	if (ecb_expect_false (CORO_THROW))
2653	{	2773	{
2654	SV *exception = sv_2mortal (CORO_THROW);	2774	SV *exception = sv_2mortal (CORO_THROW);
2655		2775
2656	CORO_THROW = 0;	2776	CORO_THROW = 0;
2657	sv_setsv (ERRSV, exception);	2777	sv_setsv (ERRSV, exception);
…		…
2659	}	2779	}
2660		2780
2661	/* return value handling - mostly like entersub */	2781	/* return value handling - mostly like entersub */
2662	/* make sure we put something on the stack in scalar context */	2782	/* make sure we put something on the stack in scalar context */
2663	if (GIMME_V == G_SCALAR	2783	if (GIMME_V == G_SCALAR
2664	&& expect_false (PL_stack_sp != PL_stack_base + checkmark + 1))	2784	&& ecb_expect_false (PL_stack_sp != PL_stack_base + checkmark + 1))
2665	{	2785	{
2666	dSP;	2786	dSP;
2667	SV **bot = PL_stack_base + checkmark;	2787	SV **bot = PL_stack_base + checkmark;
2668		2788
2669	if (sp == bot) /* too few, push undef */	2789	if (sp == bot) /* too few, push undef */
…		…
2774	{	2894	{
2775	SV *cb = coro_avp_pop_and_free (aTHX_ &((struct coro *)coro)->on_leave);	2895	SV *cb = coro_avp_pop_and_free (aTHX_ &((struct coro *)coro)->on_leave);
2776	on_enterleave_call (aTHX_ sv_2mortal (cb));	2896	on_enterleave_call (aTHX_ sv_2mortal (cb));
2777	}	2897	}
2778		2898
		2899	static void
		2900	enterleave_hook_xs (pTHX_ struct coro *coro, AV **avp, coro_enterleave_hook hook, void *arg)
		2901	{
		2902	if (!hook)
		2903	return;
		2904
		2905	if (!*avp)
		2906	{
		2907	*avp = newAV ();
		2908	AvREAL_off (*avp);
		2909	}
		2910
		2911	av_push (*avp, (SV *)hook);
		2912	av_push (*avp, (SV *)arg);
		2913	}
		2914
		2915	static void
		2916	enterleave_unhook_xs (pTHX_ struct coro *coro, AV **avp, coro_enterleave_hook hook, int execute)
		2917	{
		2918	AV *av = *avp;
		2919	int i;
		2920
		2921	if (!av)
		2922	return;
		2923
		2924	for (i = AvFILLp (av) - 1; i >= 0; i -= 2)
		2925	if (AvARRAY (av)[i] == (SV *)hook)
		2926	{
		2927	if (execute)
		2928	hook (aTHX_ (void *)AvARRAY (av)[i + 1]);
		2929
		2930	memmove (AvARRAY (av) + i, AvARRAY (av) + i + 2, AvFILLp (av) - i - 1);
		2931	av_pop (av);
		2932	av_pop (av);
		2933	break;
		2934	}
		2935
		2936	if (AvFILLp (av) >= 0)
		2937	{
		2938	*avp = 0;
		2939	SvREFCNT_dec_NN (av);
		2940	}
		2941	}
		2942
		2943	static void
		2944	api_enterleave_hook (pTHX_ SV *coro_sv, coro_enterleave_hook enter, void *enter_arg, coro_enterleave_hook leave, void *leave_arg)
		2945	{
		2946	struct coro *coro = SvSTATE (coro_sv);
		2947
		2948	if (SvSTATE_current == coro)
		2949	if (enter)
		2950	enter (aTHX_ enter_arg);
		2951
		2952	enterleave_hook_xs (aTHX_ coro, &coro->on_enter_xs, enter, enter_arg);
		2953	enterleave_hook_xs (aTHX_ coro, &coro->on_leave_xs, leave, leave_arg);
		2954	}
		2955
		2956	static void
		2957	api_enterleave_unhook (pTHX_ SV *coro_sv, coro_enterleave_hook enter, coro_enterleave_hook leave)
		2958	{
		2959	struct coro *coro = SvSTATE (coro_sv);
		2960
		2961	enterleave_unhook_xs (aTHX_ coro, &coro->on_enter_xs, enter, 0);
		2962	enterleave_unhook_xs (aTHX_ coro, &coro->on_leave_xs, leave, SvSTATE_current == coro);
		2963	}
		2964
		2965	static void
		2966	savedestructor_unhook_enter (pTHX_ coro_enterleave_hook enter)
		2967	{
		2968	struct coro *coro = SvSTATE_current;
		2969
		2970	enterleave_unhook_xs (aTHX_ coro, &coro->on_enter_xs, enter, 0);
		2971	}
		2972
		2973	static void
		2974	savedestructor_unhook_leave (pTHX_ coro_enterleave_hook leave)
		2975	{
		2976	struct coro *coro = SvSTATE_current;
		2977
		2978	enterleave_unhook_xs (aTHX_ coro, &coro->on_leave_xs, leave, 1);
		2979	}
		2980
		2981	static void
		2982	api_enterleave_scope_hook (pTHX_ coro_enterleave_hook enter, void *enter_arg, coro_enterleave_hook leave, void *leave_arg)
		2983	{
		2984	api_enterleave_hook (aTHX_ coro_current, enter, enter_arg, leave, leave_arg);
		2985
		2986	/* this ought to be much cheaper than malloc + a single destructor call */
		2987	if (enter) SAVEDESTRUCTOR_X (savedestructor_unhook_enter, enter);
		2988	if (leave) SAVEDESTRUCTOR_X (savedestructor_unhook_leave, leave);
		2989	}
		2990
2779	/*****************************************************************************/	2991	/*****************************************************************************/
2780	/* PerlIO::cede */	2992	/* PerlIO::cede */
2781		2993
2782	typedef struct	2994	typedef struct
2783	{	2995	{
2784	PerlIOBuf base;	2996	PerlIOBuf base;
2785	NV next, every;	2997	NV next, every;
2786	} PerlIOCede;	2998	} PerlIOCede;
2787		2999
2788	static IV	3000	static IV ecb_cold
2789	PerlIOCede_pushed (pTHX_ PerlIO *f, const char *mode, SV *arg, PerlIO_funcs *tab)	3001	PerlIOCede_pushed (pTHX_ PerlIO *f, const char *mode, SV *arg, PerlIO_funcs *tab)
2790	{	3002	{
2791	PerlIOCede *self = PerlIOSelf (f, PerlIOCede);	3003	PerlIOCede *self = PerlIOSelf (f, PerlIOCede);
2792		3004
2793	self->every = SvCUR (arg) ? SvNV (arg) : 0.01;	3005	self->every = SvCUR (arg) ? SvNV (arg) : 0.01;
2794	self->next = nvtime () + self->every;	3006	self->next = nvtime () + self->every;
2795		3007
2796	return PerlIOBuf_pushed (aTHX_ f, mode, Nullsv, tab);	3008	return PerlIOBuf_pushed (aTHX_ f, mode, Nullsv, tab);
2797	}	3009	}
2798		3010
2799	static SV *	3011	static SV * ecb_cold
2800	PerlIOCede_getarg (pTHX_ PerlIO *f, CLONE_PARAMS *param, int flags)	3012	PerlIOCede_getarg (pTHX_ PerlIO *f, CLONE_PARAMS *param, int flags)
2801	{	3013	{
2802	PerlIOCede *self = PerlIOSelf (f, PerlIOCede);	3014	PerlIOCede *self = PerlIOSelf (f, PerlIOCede);
2803		3015
2804	return newSVnv (self->every);	3016	return newSVnv (self->every);
…		…
2911	XPUSHs (sv_2mortal (newRV_inc ((SV *)av)));	3123	XPUSHs (sv_2mortal (newRV_inc ((SV *)av)));
2912	PUTBACK;	3124	PUTBACK;
2913	call_sv (cb, G_VOID | G_DISCARD | G_EVAL | G_KEEPERR);	3125	call_sv (cb, G_VOID | G_DISCARD | G_EVAL | G_KEEPERR);
2914	}	3126	}
2915		3127
2916	SvREFCNT_dec (cb);	3128	SvREFCNT_dec_NN (cb);
2917	}	3129	}
2918	}	3130	}
2919		3131
2920	static void	3132	static void
2921	coro_semaphore_destroy (pTHX_ struct CoroSLF *frame)	3133	coro_semaphore_destroy (pTHX_ struct CoroSLF *frame)
…		…
2929	{	3141	{
2930	AV *av = (AV *)frame->data;	3142	AV *av = (AV *)frame->data;
2931	SV *count_sv = AvARRAY (av)[0];	3143	SV *count_sv = AvARRAY (av)[0];
2932	SV *coro_hv = SvRV (coro_current);	3144	SV *coro_hv = SvRV (coro_current);
2933		3145
		3146	frame->destroy = 0;
		3147
2934	/* if we are about to throw, don't actually acquire the lock, just throw */	3148	/* if we are about to throw, don't actually acquire the lock, just throw */
2935	if (CORO_THROW)	3149	if (ecb_expect_false (CORO_THROW))
		3150	{
		3151	/* we still might be responsible for the semaphore, so wake up others */
		3152	coro_semaphore_adjust (aTHX_ av, 0);
		3153
2936	return 0;	3154	return 0;
		3155	}
2937	else if (SvIVX (count_sv) > 0)	3156	else if (SvIVX (count_sv) > 0)
2938	{	3157	{
2939	frame->destroy = 0;
2940
2941	if (acquire)	3158	if (acquire)
2942	SvIVX (count_sv) = SvIVX (count_sv) - 1;	3159	SvIVX (count_sv) = SvIVX (count_sv) - 1;
2943	else	3160	else
2944	coro_semaphore_adjust (aTHX_ av, 0);	3161	coro_semaphore_adjust (aTHX_ av, 0);
2945		3162
…		…
2949	{	3166	{
2950	int i;	3167	int i;
2951	/* if we were woken up but can't down, we look through the whole */	3168	/* if we were woken up but can't down, we look through the whole */
2952	/* waiters list and only add us if we aren't in there already */	3169	/* waiters list and only add us if we aren't in there already */
2953	/* this avoids some degenerate memory usage cases */	3170	/* this avoids some degenerate memory usage cases */
2954	for (i = AvFILLp (av); i > 0; --i) // i > 0 is not an off-by-one bug	3171	for (i = AvFILLp (av); i > 0; --i) /* i > 0 is not an off-by-one bug */
2955	if (AvARRAY (av)[i] == coro_hv)	3172	if (AvARRAY (av)[i] == coro_hv)
2956	return 1;	3173	return 1;
2957		3174
2958	av_push (av, SvREFCNT_inc (coro_hv));	3175	av_push (av, SvREFCNT_inc (coro_hv));
2959	return 1;	3176	return 1;
…		…
3056	{	3273	{
3057	api_ready (aTHX_ cb);	3274	api_ready (aTHX_ cb);
3058	sv_setiv (cb, 0); /* signal waiter */	3275	sv_setiv (cb, 0); /* signal waiter */
3059	}	3276	}
3060		3277
3061	SvREFCNT_dec (cb);	3278	SvREFCNT_dec_NN (cb);
3062		3279
3063	--count;	3280	--count;
3064	}	3281	}
3065	}	3282	}
3066		3283
…		…
3151	}	3368	}
3152		3369
3153	av_push (state, data_sv);	3370	av_push (state, data_sv);
3154		3371
3155	api_ready (aTHX_ coro);	3372	api_ready (aTHX_ coro);
3156	SvREFCNT_dec (coro);	3373	SvREFCNT_dec_NN (coro);
3157	SvREFCNT_dec ((AV *)state);	3374	SvREFCNT_dec_NN ((AV *)state);
3158	}	3375	}
3159		3376
3160	static int	3377	static int
3161	slf_check_aio_req (pTHX_ struct CoroSLF *frame)	3378	slf_check_aio_req (pTHX_ struct CoroSLF *frame)
3162	{	3379	{
…		…
3167	/* it quickly returns */	3384	/* it quickly returns */
3168	if (CORO_THROW)	3385	if (CORO_THROW)
3169	return 0;	3386	return 0;
3170		3387
3171	/* one element that is an RV? repeat! */	3388	/* one element that is an RV? repeat! */
3172	if (AvFILLp (state) == 0 && SvROK (AvARRAY (state)[0]))	3389	if (AvFILLp (state) == 0 && SvTYPE (AvARRAY (state)[0]) != SVt_PV)
3173	return 1;	3390	return 1;
3174		3391
3175	/* restore status */	3392	/* restore status */
3176	{	3393	{
3177	SV *data_sv = av_pop (state);	3394	SV *data_sv = av_pop (state);
…		…
3180	errno = data->errorno;	3397	errno = data->errorno;
3181	PL_laststype = data->laststype;	3398	PL_laststype = data->laststype;
3182	PL_laststatval = data->laststatval;	3399	PL_laststatval = data->laststatval;
3183	PL_statcache = data->statcache;	3400	PL_statcache = data->statcache;
3184		3401
3185	SvREFCNT_dec (data_sv);	3402	SvREFCNT_dec_NN (data_sv);
3186	}	3403	}
3187		3404
3188	/* push result values */	3405	/* push result values */
3189	{	3406	{
3190	dSP;	3407	dSP;
…		…
3216	dSP;	3433	dSP;
3217		3434
3218	static SV *prio_cv;	3435	static SV *prio_cv;
3219	static SV *prio_sv;	3436	static SV *prio_sv;
3220		3437
3221	if (expect_false (!prio_cv))	3438	if (ecb_expect_false (!prio_cv))
3222	{	3439	{
3223	prio_cv = (SV *)get_cv ("IO::AIO::aioreq_pri", 0);	3440	prio_cv = (SV *)get_cv ("IO::AIO::aioreq_pri", 0);
3224	prio_sv = newSViv (0);	3441	prio_sv = newSViv (0);
3225	}	3442	}
3226		3443
…		…
3332	}	3549	}
3333		3550
3334	return coro_sv;	3551	return coro_sv;
3335	}	3552	}
3336		3553
		3554	#ifndef __cplusplus
		3555	ecb_cold XS(boot_Coro__State);
		3556	#endif
		3557
		3558	#if CORO_JIT
		3559
		3560	static void ecb_noinline ecb_cold
		3561	pushav_4uv (pTHX_ UV a, UV b, UV c, UV d)
		3562	{
		3563	dSP;
		3564	AV *av = newAV ();
		3565
		3566	av_store (av, 3, newSVuv (d));
		3567	av_store (av, 2, newSVuv (c));
		3568	av_store (av, 1, newSVuv (b));
		3569	av_store (av, 0, newSVuv (a));
		3570
		3571	XPUSHs (sv_2mortal (newRV_noinc ((SV *)av)));
		3572
		3573	PUTBACK;
		3574	}
		3575
		3576	static void ecb_noinline ecb_cold
		3577	jit_init (pTHX)
		3578	{
		3579	dSP;
		3580	SV *load, *save;
		3581	char *map_base;
		3582	char *load_ptr, *save_ptr;
		3583	STRLEN load_len, save_len, map_len;
		3584	int count;
		3585
		3586	eval_pv ("require 'Coro/jit-" CORO_JIT_TYPE ".pl'", 1);
		3587
		3588	PUSHMARK (SP);
		3589	#define VARx(name,expr,type) pushav_4uv (aTHX_ (UV)&(expr), sizeof (expr), offsetof (perl_slots, name), sizeof (type));
		3590	#include "state.h"
		3591	count = call_pv ("Coro::State::_jit", G_ARRAY);
		3592	SPAGAIN;
		3593
		3594	save = POPs; save_ptr = SvPVbyte (save, save_len);
		3595	load = POPs; load_ptr = SvPVbyte (load, load_len);
		3596
		3597	map_len = load_len + save_len + 16;
		3598
		3599	map_base = mmap (0, map_len, PROT_READ | PROT_WRITE | PROT_EXEC, MAP_PRIVATE | MAP_ANONYMOUS, -1, 0);
		3600
		3601	if (map_base == (char *)MAP_FAILED)
		3602	map_base = mmap (0, map_len, PROT_READ | PROT_WRITE, MAP_PRIVATE | MAP_ANONYMOUS, -1, 0);
		3603
		3604	assert (("Coro: unable to mmap jit code page, cannot continue.", map_base != (char *)MAP_FAILED));
		3605
		3606	load_perl_slots = (load_save_perl_slots_type)map_base;
		3607	memcpy (map_base, load_ptr, load_len);
		3608
		3609	map_base += (load_len + 15) & ~15;
		3610
		3611	save_perl_slots = (load_save_perl_slots_type)map_base;
		3612	memcpy (map_base, save_ptr, save_len);
		3613
		3614	/* we are good citizens and try to make the page read-only, so the evil evil */
		3615	/* hackers might have it a bit more difficult */
		3616	mprotect (map_base, map_len, PROT_READ | PROT_EXEC);
		3617
		3618	PUTBACK;
		3619	eval_pv ("undef &Coro::State::_jit", 1);
		3620	}
		3621
		3622	#endif
		3623
3337	MODULE = Coro::State PACKAGE = Coro::State PREFIX = api_	3624	MODULE = Coro::State PACKAGE = Coro::State PREFIX = api_
3338		3625
3339	PROTOTYPES: DISABLE	3626	PROTOTYPES: DISABLE
3340		3627
3341	BOOT:	3628	BOOT:
3342	{	3629	{
		3630	#define VARx(name,expr,type) if (sizeof (type) < sizeof (expr)) croak ("FATAL: Coro thread context slot '" # name "' too small for this version of perl.");
		3631	#include "state.h"
3343	#ifdef USE_ITHREADS	3632	#ifdef USE_ITHREADS
3344	# if CORO_PTHREAD	3633	# if CORO_PTHREAD
3345	coro_thx = PERL_GET_CONTEXT;	3634	coro_thx = PERL_GET_CONTEXT;
3346	# endif	3635	# endif
3347	#endif	3636	#endif
3348	BOOT_PAGESIZE;	3637	/* perl defines these to check for existance first, but why it doesn't */
		3638	/* just create them one at init time is not clear to me, except for */
		3639	/* programs trying to delete them, but... */
		3640	/* anyway, we declare this as invalid and make sure they are initialised here */
		3641	DEFSV;
		3642	ERRSV;
3349		3643
3350	cctx_current = cctx_new_empty ();	3644	cctx_current = cctx_new_empty ();
3351		3645
3352	irsgv = gv_fetchpv ("/" , GV_ADD|GV_NOTQUAL, SVt_PV);	3646	irsgv = gv_fetchpv ("/" , GV_ADD|GV_NOTQUAL, SVt_PV);
3353	stdoutgv = gv_fetchpv ("STDOUT", GV_ADD|GV_NOTQUAL, SVt_PVIO);	3647	stdoutgv = gv_fetchpv ("STDOUT", GV_ADD|GV_NOTQUAL, SVt_PVIO);
3354		3648
3355	orig_sigelem_get = PL_vtbl_sigelem.svt_get; PL_vtbl_sigelem.svt_get = coro_sigelem_get;	3649	{
3356	orig_sigelem_set = PL_vtbl_sigelem.svt_set; PL_vtbl_sigelem.svt_set = coro_sigelem_set;	3650	/*
3357	orig_sigelem_clr = PL_vtbl_sigelem.svt_clear; PL_vtbl_sigelem.svt_clear = coro_sigelem_clr;	3651	* we provide a vtbvl for %SIG magic that replaces PL_vtbl_sig
		3652	* by coro_sig_vtbl in hash values.
		3653	*/
		3654	MAGIC *mg = mg_find ((SV *)GvHV (gv_fetchpv ("SIG", GV_ADD | GV_NOTQUAL, SVt_PVHV)), PERL_MAGIC_sig);
		3655
		3656	/* this only works if perl doesn't have a vtbl for %SIG */
		3657	assert (!mg->mg_virtual);
		3658
		3659	/*
		3660	* The irony is that the perl API itself asserts that mg_virtual
		3661	* must be non-const, yet perl5porters insisted on marking their
		3662	* vtbls as read-only, just to thwart perl modules from patching
		3663	* them.
		3664	*/
		3665	mg->mg_virtual = (MGVTBL *)&coro_sig_vtbl;
		3666	mg->mg_flags |= MGf_COPY;
		3667
		3668	coro_sigelem_vtbl = PL_vtbl_sigelem;
		3669	coro_sigelem_vtbl.svt_get = coro_sigelem_get;
		3670	coro_sigelem_vtbl.svt_set = coro_sigelem_set;
		3671	coro_sigelem_vtbl.svt_clear = coro_sigelem_clr;
		3672	}
3358		3673
3359	hv_sig = coro_get_hv (aTHX_ "SIG", TRUE);
3360	rv_diehook = newRV_inc ((SV *)gv_fetchpv ("Coro::State::diehook" , 0, SVt_PVCV));	3674	rv_diehook = newRV_inc ((SV *)gv_fetchpv ("Coro::State::diehook" , 0, SVt_PVCV));
3361	rv_warnhook = newRV_inc ((SV *)gv_fetchpv ("Coro::State::warnhook", 0, SVt_PVCV));	3675	rv_warnhook = newRV_inc ((SV *)gv_fetchpv ("Coro::State::warnhook", 0, SVt_PVCV));
3362		3676
3363	coro_state_stash = gv_stashpv ("Coro::State", TRUE);	3677	coro_state_stash = gv_stashpv ("Coro::State", TRUE);
3364		3678
…		…
3396	coroapi.prepare_cede_notself = prepare_cede_notself;	3710	coroapi.prepare_cede_notself = prepare_cede_notself;
3397		3711
3398	time_init (aTHX);	3712	time_init (aTHX);
3399		3713
3400	assert (("PRIO_NORMAL must be 0", !CORO_PRIO_NORMAL));	3714	assert (("PRIO_NORMAL must be 0", !CORO_PRIO_NORMAL));
		3715	#if CORO_JIT
		3716	PUTBACK;
		3717	jit_init (aTHX);
		3718	SPAGAIN;
		3719	#endif
3401	}	3720	}
3402		3721
3403	SV *	3722	SV *
3404	new (SV *klass, ...)	3723	new (SV *klass, ...)
3405	ALIAS:	3724	ALIAS:
…		…
3412	void	3731	void
3413	transfer (...)	3732	transfer (...)
3414	PROTOTYPE: $$	3733	PROTOTYPE: $$
3415	CODE:	3734	CODE:
3416	CORO_EXECUTE_SLF_XS (slf_init_transfer);	3735	CORO_EXECUTE_SLF_XS (slf_init_transfer);
3417
3418	void
3419	_exit (int code)
3420	PROTOTYPE: $
3421	CODE:
3422	_exit (code);
3423		3736
3424	SV *	3737	SV *
3425	clone (Coro::State coro)	3738	clone (Coro::State coro)
3426	CODE:	3739	CODE:
3427	{	3740	{
…		…
3482	void	3795	void
3483	list ()	3796	list ()
3484	PROTOTYPE:	3797	PROTOTYPE:
3485	PPCODE:	3798	PPCODE:
3486	{	3799	{
3487	struct coro *coro;	3800	struct coro *coro;
3488	for (coro = coro_first; coro; coro = coro->next)	3801	for (coro = coro_first; coro; coro = coro->next)
3489	if (coro->hv)	3802	if (coro->hv)
3490	XPUSHs (sv_2mortal (newRV_inc ((SV *)coro->hv)));	3803	XPUSHs (sv_2mortal (newRV_inc ((SV *)coro->hv)));
3491	}	3804	}
3492		3805
…		…
3556	RETVAL = boolSV (coro->flags & ix);	3869	RETVAL = boolSV (coro->flags & ix);
3557	OUTPUT:	3870	OUTPUT:
3558	RETVAL	3871	RETVAL
3559		3872
3560	void	3873	void
3561	throw (Coro::State self, SV *exception = &PL_sv_undef)	3874	throw (SV *self, SV *exception = &PL_sv_undef)
3562	PROTOTYPE: $;$	3875	PROTOTYPE: $;$
3563	CODE:	3876	CODE:
3564	{	3877	{
		3878	struct coro *coro = SvSTATE (self);
3565	struct coro *current = SvSTATE_current;	3879	struct coro *current = SvSTATE_current;
3566	SV **exceptionp = self == current ? &CORO_THROW : &self->except;	3880	SV **exceptionp = coro == current ? &CORO_THROW : &coro->except;
3567	SvREFCNT_dec (*exceptionp);	3881	SvREFCNT_dec (*exceptionp);
3568	SvGETMAGIC (exception);	3882	SvGETMAGIC (exception);
3569	*exceptionp = SvOK (exception) ? newSVsv (exception) : 0;	3883	*exceptionp = SvOK (exception) ? newSVsv (exception) : 0;
		3884
		3885	api_ready (aTHX_ self);
3570	}	3886	}
3571		3887
3572	void	3888	void
3573	api_trace (SV *coro, int flags = CC_TRACE | CC_TRACE_SUB)	3889	api_trace (SV *coro, int flags = CC_TRACE | CC_TRACE_SUB)
3574	PROTOTYPE: $;$	3890	PROTOTYPE: $;$
…		…
3651		3967
3652	void	3968	void
3653	times (Coro::State self)	3969	times (Coro::State self)
3654	PPCODE:	3970	PPCODE:
3655	{	3971	{
3656	struct coro *current = SvSTATE (coro_current);	3972	struct coro *current = SvSTATE (coro_current);
3657		3973
3658	if (expect_false (current == self))	3974	if (ecb_expect_false (current == self))
3659	{	3975	{
3660	coro_times_update ();	3976	coro_times_update ();
3661	coro_times_add (SvSTATE (coro_current));	3977	coro_times_add (SvSTATE (coro_current));
3662	}	3978	}
3663		3979
3664	EXTEND (SP, 2);	3980	EXTEND (SP, 2);
3665	PUSHs (sv_2mortal (newSVnv (self->t_real [0] + self->t_real [1] * 1e-9)));	3981	PUSHs (sv_2mortal (newSVnv (self->t_real [0] + self->t_real [1] * 1e-9)));
3666	PUSHs (sv_2mortal (newSVnv (self->t_cpu [0] + self->t_cpu [1] * 1e-9)));	3982	PUSHs (sv_2mortal (newSVnv (self->t_cpu [0] + self->t_cpu [1] * 1e-9)));
3667		3983
3668	if (expect_false (current == self))	3984	if (ecb_expect_false (current == self))
3669	coro_times_sub (SvSTATE (coro_current));	3985	coro_times_sub (SvSTATE (coro_current));
3670	}	3986	}
3671		3987
3672	void	3988	void
3673	swap_sv (Coro::State coro, SV *sv, SV *swapsv)	3989	swap_sv (Coro::State coro, SV *sva, SV *svb)
3674	CODE:	3990	CODE:
3675	{	3991	{
3676	struct coro *current = SvSTATE_current;	3992	struct coro *current = SvSTATE_current;
		3993	AV *swap_sv;
		3994	int i;
		3995
		3996	sva = SvRV (sva);
		3997	svb = SvRV (svb);
3677		3998
3678	if (current == coro)	3999	if (current == coro)
3679	SWAP_SVS (current);	4000	SWAP_SVS_LEAVE (current);
3680		4001
3681	if (!coro->swap_sv)	4002	if (!coro->swap_sv)
3682	coro->swap_sv = newAV ();	4003	coro->swap_sv = newAV ();
3683		4004
		4005	swap_sv = coro->swap_sv;
		4006
		4007	for (i = AvFILLp (swap_sv) - 1; i >= 0; i -= 2)
		4008	{
		4009	SV *a = AvARRAY (swap_sv)[i ];
		4010	SV *b = AvARRAY (swap_sv)[i + 1];
		4011
		4012	if (a == sva && b == svb)
		4013	{
		4014	SvREFCNT_dec_NN (a);
		4015	SvREFCNT_dec_NN (b);
		4016
		4017	for (; i <= AvFILLp (swap_sv) - 2; i++)
		4018	AvARRAY (swap_sv)[i] = AvARRAY (swap_sv)[i + 2];
		4019
		4020	AvFILLp (swap_sv) -= 2;
		4021
		4022	goto removed;
		4023	}
		4024	}
		4025
3684	av_push (coro->swap_sv, SvREFCNT_inc_NN (SvRV (sv )));	4026	av_push (swap_sv, SvREFCNT_inc_NN (sva));
3685	av_push (coro->swap_sv, SvREFCNT_inc_NN (SvRV (swapsv)));	4027	av_push (swap_sv, SvREFCNT_inc_NN (svb));
		4028
		4029	removed:
3686		4030
3687	if (current == coro)	4031	if (current == coro)
3688	SWAP_SVS (current);	4032	SWAP_SVS_ENTER (current);
3689	}	4033	}
3690		4034
3691		4035
3692	MODULE = Coro::State PACKAGE = Coro	4036	MODULE = Coro::State PACKAGE = Coro
3693		4037
3694	BOOT:	4038	BOOT:
3695	{	4039	{
		4040	if (SVt_LAST > 32)
		4041	croak ("Coro internal error: SVt_LAST > 32, swap_sv might need adjustment");
		4042
3696	sv_pool_rss = coro_get_sv (aTHX_ "Coro::POOL_RSS" , TRUE);	4043	sv_pool_rss = coro_get_sv (aTHX_ "Coro::POOL_RSS" , TRUE);
3697	sv_pool_size = coro_get_sv (aTHX_ "Coro::POOL_SIZE" , TRUE);	4044	sv_pool_size = coro_get_sv (aTHX_ "Coro::POOL_SIZE" , TRUE);
3698	cv_coro_run = get_cv ( "Coro::_coro_run" , GV_ADD);	4045	cv_coro_run = get_cv ( "Coro::_coro_run" , GV_ADD);
3699	coro_current = coro_get_sv (aTHX_ "Coro::current" , FALSE); SvREADONLY_on (coro_current);	4046	coro_current = coro_get_sv (aTHX_ "Coro::current" , FALSE); SvREADONLY_on (coro_current);
3700	av_async_pool = coro_get_av (aTHX_ "Coro::async_pool", TRUE);	4047	av_async_pool = coro_get_av (aTHX_ "Coro::async_pool", TRUE);
…		…
3704		4051
3705	sv_async_pool_idle = newSVpv ("[async pool idle]", 0); SvREADONLY_on (sv_async_pool_idle);	4052	sv_async_pool_idle = newSVpv ("[async pool idle]", 0); SvREADONLY_on (sv_async_pool_idle);
3706	sv_Coro = newSVpv ("Coro", 0); SvREADONLY_on (sv_Coro);	4053	sv_Coro = newSVpv ("Coro", 0); SvREADONLY_on (sv_Coro);
3707	cv_pool_handler = get_cv ("Coro::pool_handler", GV_ADD); SvREADONLY_on (cv_pool_handler);	4054	cv_pool_handler = get_cv ("Coro::pool_handler", GV_ADD); SvREADONLY_on (cv_pool_handler);
3708	CvNODEBUG_on (get_cv ("Coro::_pool_handler", 0)); /* work around a debugger bug */	4055	CvNODEBUG_on (get_cv ("Coro::_pool_handler", 0)); /* work around a debugger bug */
3709		4056
3710	coro_stash = gv_stashpv ("Coro", TRUE);	4057	coro_stash = gv_stashpv ("Coro", TRUE);
3711		4058
3712	newCONSTSUB (coro_stash, "PRIO_MAX", newSViv (CORO_PRIO_MAX));	4059	newCONSTSUB (coro_stash, "PRIO_MAX", newSViv (CORO_PRIO_MAX));
3713	newCONSTSUB (coro_stash, "PRIO_HIGH", newSViv (CORO_PRIO_HIGH));	4060	newCONSTSUB (coro_stash, "PRIO_HIGH", newSViv (CORO_PRIO_HIGH));
3714	newCONSTSUB (coro_stash, "PRIO_NORMAL", newSViv (CORO_PRIO_NORMAL));	4061	newCONSTSUB (coro_stash, "PRIO_NORMAL", newSViv (CORO_PRIO_NORMAL));
…		…
3726	coroapi.ready = api_ready;	4073	coroapi.ready = api_ready;
3727	coroapi.is_ready = api_is_ready;	4074	coroapi.is_ready = api_is_ready;
3728	coroapi.nready = coro_nready;	4075	coroapi.nready = coro_nready;
3729	coroapi.current = coro_current;	4076	coroapi.current = coro_current;
3730		4077
		4078	coroapi.enterleave_hook = api_enterleave_hook;
		4079	coroapi.enterleave_unhook = api_enterleave_unhook;
		4080	coroapi.enterleave_scope_hook = api_enterleave_scope_hook;
		4081
3731	/*GCoroAPI = &coroapi;*/	4082	/*GCoroAPI = &coroapi;*/
3732	sv_setiv (sv, (IV)&coroapi);	4083	sv_setiv (sv, PTR2IV (&coroapi));
3733	SvREADONLY_on (sv);	4084	SvREADONLY_on (sv);
3734	}	4085	}
3735	}	4086	}
3736		4087
3737	SV *	4088	SV *
…		…
3800		4151
3801	void	4152	void
3802	_set_current (SV *current)	4153	_set_current (SV *current)
3803	PROTOTYPE: $	4154	PROTOTYPE: $
3804	CODE:	4155	CODE:
3805	SvREFCNT_dec (SvRV (coro_current));	4156	SvREFCNT_dec_NN (SvRV (coro_current));
3806	SvRV_set (coro_current, SvREFCNT_inc_NN (SvRV (current)));	4157	SvRV_set (coro_current, SvREFCNT_inc_NN (SvRV (current)));
3807		4158
3808	void	4159	void
3809	_set_readyhook (SV *hook)	4160	_set_readyhook (SV *hook)
3810	PROTOTYPE: $	4161	PROTOTYPE: $
…		…
3894		4245
3895	if ((SV *)hv == &PL_sv_undef)	4246	if ((SV *)hv == &PL_sv_undef)
3896	{	4247	{
3897	SV *sv = coro_new (aTHX_ coro_stash, (SV **)&cv_pool_handler, 1, 1);	4248	SV *sv = coro_new (aTHX_ coro_stash, (SV **)&cv_pool_handler, 1, 1);
3898	hv = (HV *)SvREFCNT_inc_NN (SvRV (sv));	4249	hv = (HV *)SvREFCNT_inc_NN (SvRV (sv));
3899	SvREFCNT_dec (sv);	4250	SvREFCNT_dec_NN (sv);
3900	}	4251	}
3901		4252
3902	{	4253	{
3903	struct coro *coro = SvSTATE_hv (hv);	4254	struct coro *coro = SvSTATE_hv (hv);
3904		4255
…		…
3911	api_ready (aTHX_ (SV *)hv);	4262	api_ready (aTHX_ (SV *)hv);
3912		4263
3913	if (GIMME_V != G_VOID)	4264	if (GIMME_V != G_VOID)
3914	XPUSHs (sv_2mortal (newRV_noinc ((SV *)hv)));	4265	XPUSHs (sv_2mortal (newRV_noinc ((SV *)hv)));
3915	else	4266	else
3916	SvREFCNT_dec (hv);	4267	SvREFCNT_dec_NN (hv);
3917	}	4268	}
3918		4269
3919	SV *	4270	SV *
3920	rouse_cb ()	4271	rouse_cb ()
3921	PROTOTYPE:	4272	PROTOTYPE:
…		…
3936	on_leave = 1	4287	on_leave = 1
3937	PROTOTYPE: &	4288	PROTOTYPE: &
3938	CODE:	4289	CODE:
3939	{	4290	{
3940	struct coro *coro = SvSTATE_current;	4291	struct coro *coro = SvSTATE_current;
3941	AV **avp = ix ? &coro->on_leave : &coro->on_enter;	4292	AV **avp = ix ? &coro->on_leave : &coro->on_enter;
3942		4293
3943	block = s_get_cv_croak (block);	4294	block = s_get_cv_croak (block);
3944		4295
3945	if (!*avp)	4296	if (!*avp)
3946	*avp = newAV ();	4297	*avp = newAV ();
…		…
3966		4317
3967	SV *	4318	SV *
3968	new (SV *klass, SV *count = 0)	4319	new (SV *klass, SV *count = 0)
3969	CODE:	4320	CODE:
3970	{	4321	{
3971	int semcnt = 1;	4322	int semcnt = 1;
3972		4323
3973	if (count)	4324	if (count)
3974	{	4325	{
3975	SvGETMAGIC (count);	4326	SvGETMAGIC (count);
3976		4327
…		…
4000	RETVAL = newSVsv (AvARRAY ((AV *)SvRV (self))[0]);	4351	RETVAL = newSVsv (AvARRAY ((AV *)SvRV (self))[0]);
4001	OUTPUT:	4352	OUTPUT:
4002	RETVAL	4353	RETVAL
4003		4354
4004	void	4355	void
4005	up (SV *self, int adjust = 1)	4356	up (SV *self)
4006	ALIAS:
4007	adjust = 1
4008	CODE:	4357	CODE:
		4358	coro_semaphore_adjust (aTHX_ (AV *)SvRV (self), 1);
		4359
		4360	void
		4361	adjust (SV *self, int adjust)
		4362	CODE:
4009	coro_semaphore_adjust (aTHX_ (AV *)SvRV (self), ix ? adjust : 1);	4363	coro_semaphore_adjust (aTHX_ (AV *)SvRV (self), adjust);
4010		4364
4011	void	4365	void
4012	down (...)	4366	down (...)
4013	CODE:	4367	CODE:
4014	CORO_EXECUTE_SLF_XS (slf_init_semaphore_down);	4368	CORO_EXECUTE_SLF_XS (slf_init_semaphore_down);
…		…
4036	XSRETURN_NO;	4390	XSRETURN_NO;
4037	}	4391	}
4038		4392
4039	void	4393	void
4040	waiters (SV *self)	4394	waiters (SV *self)
4041	PPCODE:	4395	PPCODE:
4042	{	4396	{
4043	AV *av = (AV *)SvRV (self);	4397	AV *av = (AV *)SvRV (self);
4044	int wcount = AvFILLp (av) + 1 - 1;	4398	int wcount = AvFILLp (av) + 1 - 1;
4045		4399
4046	if (GIMME_V == G_SCALAR)	4400	if (GIMME_V == G_SCALAR)
…		…
4055	}	4409	}
4056		4410
4057	MODULE = Coro::State PACKAGE = Coro::SemaphoreSet	4411	MODULE = Coro::State PACKAGE = Coro::SemaphoreSet
4058		4412
4059	void	4413	void
4060	_may_delete (SV *sem, int count, int extra_refs)	4414	_may_delete (SV *sem, int count, unsigned int extra_refs)
4061	PPCODE:	4415	PPCODE:
4062	{	4416	{
4063	AV *av = (AV *)SvRV (sem);	4417	AV *av = (AV *)SvRV (sem);
4064		4418
4065	if (SvREFCNT ((SV *)av) == 1 + extra_refs	4419	if (SvREFCNT ((SV *)av) == 1 + extra_refs
4066	&& AvFILLp (av) == 0 /* no waiters, just count */	4420	&& AvFILLp (av) == 0 /* no waiters, just count */
4067	&& SvIV (AvARRAY (av)[0]) == count)	4421	&& SvIV (AvARRAY (av)[0]) == count)
4068	XSRETURN_YES;	4422	XSRETURN_YES;
…		…
4089		4443
4090	void	4444	void
4091	broadcast (SV *self)	4445	broadcast (SV *self)
4092	CODE:	4446	CODE:
4093	{	4447	{
4094	AV *av = (AV *)SvRV (self);	4448	AV *av = (AV *)SvRV (self);
4095	coro_signal_wake (aTHX_ av, AvFILLp (av));	4449	coro_signal_wake (aTHX_ av, AvFILLp (av));
4096	}	4450	}
4097		4451
4098	void	4452	void
4099	send (SV *self)	4453	send (SV *self)
…		…
4107	SvIVX (AvARRAY (av)[0]) = 1; /* remember the signal */	4461	SvIVX (AvARRAY (av)[0]) = 1; /* remember the signal */
4108	}	4462	}
4109		4463
4110	IV	4464	IV
4111	awaited (SV *self)	4465	awaited (SV *self)
4112	CODE:	4466	CODE:
4113	RETVAL = AvFILLp ((AV *)SvRV (self)) + 1 - 1;	4467	RETVAL = AvFILLp ((AV *)SvRV (self)) + 1 - 1;
4114	OUTPUT:	4468	OUTPUT:
4115	RETVAL	4469	RETVAL
4116		4470
4117		4471
…		…
4122		4476
4123	void	4477	void
4124	_schedule (...)	4478	_schedule (...)
4125	CODE:	4479	CODE:
4126	{	4480	{
4127	static int incede;	4481	static int incede;
4128		4482
4129	api_cede_notself (aTHX);	4483	api_cede_notself (aTHX);
4130		4484
4131	++incede;	4485	++incede;
4132	while (coro_nready >= incede && api_cede (aTHX))	4486	while (coro_nready >= incede && api_cede (aTHX))
…		…
4176	{	4530	{
4177	PL_ppaddr [OP_SSELECT] = coro_old_pp_sselect;	4531	PL_ppaddr [OP_SSELECT] = coro_old_pp_sselect;
4178	coro_old_pp_sselect = 0;	4532	coro_old_pp_sselect = 0;
4179	}	4533	}
4180		4534
		4535	MODULE = Coro::State PACKAGE = Coro::Util
		4536
		4537	void
		4538	_exit (int code)
		4539	CODE:
		4540	_exit (code);
		4541
		4542	NV
		4543	time ()
		4544	CODE:
		4545	RETVAL = nvtime (aTHX);
		4546	OUTPUT:
		4547	RETVAL
		4548
		4549	NV
		4550	gettimeofday ()
		4551	PPCODE:
		4552	{
		4553	UV tv [2];
		4554	u2time (aTHX_ tv);
		4555	EXTEND (SP, 2);
		4556	PUSHs (sv_2mortal (newSVuv (tv [0])));
		4557	PUSHs (sv_2mortal (newSVuv (tv [1])));
		4558	}
		4559

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