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/cvs/Coro/Coro/State.xs

Comparing Coro/Coro/State.xs (file contents):
Revision 1.291 by root, Tue Nov 18 05:55:04 2008 UTC vs.
Revision 1.324 by root, Sat Nov 22 07:02:28 2008 UTC

…		…
16		16
17	#ifdef WIN32	17	#ifdef WIN32
18	# undef setjmp	18	# undef setjmp
19	# undef longjmp	19	# undef longjmp
20	# undef _exit	20	# undef _exit
21	# define setjmp _setjmp // deep magic, don't ask	21	# define setjmp _setjmp /* deep magic */
22	#else	22	#else
23	# include <inttypes.h> /* most portable stdint.h */	23	# include <inttypes.h> /* most portable stdint.h */
24	#endif	24	#endif
25		25
26	#ifdef HAVE_MMAP	26	#ifdef HAVE_MMAP
…		…
55		55
56	#define PERL_VERSION_ATLEAST(a,b,c) \	56	#define PERL_VERSION_ATLEAST(a,b,c) \
57	(PERL_REVISION > (a) \	57	(PERL_REVISION > (a) \
58	|| (PERL_REVISION == (a) \	58	|| (PERL_REVISION == (a) \
59	&& (PERL_VERSION > (b) \	59	&& (PERL_VERSION > (b) \
60	|| (PERL_VERSION == (b) && PERLSUBVERSION >= (c)))))	60	|| (PERL_VERSION == (b) && PERL_SUBVERSION >= (c)))))
61		61
62	#if !PERL_VERSION_ATLEAST (5,6,0)	62	#if !PERL_VERSION_ATLEAST (5,6,0)
63	# ifndef PL_ppaddr	63	# ifndef PL_ppaddr
64	# define PL_ppaddr ppaddr	64	# define PL_ppaddr ppaddr
65	# endif	65	# endif
…		…
98	# define newSV(l) NEWSV(0,l)	98	# define newSV(l) NEWSV(0,l)
99	#endif	99	#endif
100	#ifndef CvISXSUB_on	100	#ifndef CvISXSUB_on
101	# define CvISXSUB_on(cv) (void)cv	101	# define CvISXSUB_on(cv) (void)cv
102	#endif	102	#endif
		103	#ifndef CvISXSUB
		104	# define CvISXSUB(cv) (CvXSUB (cv) ? TRUE : FALSE)
		105	#endif
		106	#ifndef Newx
		107	# define Newx(ptr,nitems,type) New (0,ptr,nitems,type)
		108	#endif
103		109
104	/* 5.8.7 */	110	/* 5.8.7 */
105	#ifndef SvRV_set	111	#ifndef SvRV_set
106	# define SvRV_set(s,v) SvRV(s) = (v)	112	# define SvRV_set(s,v) SvRV(s) = (v)
107	#endif	113	#endif
…		…
120	#endif	126	#endif
121		127
122	/* The next macros try to return the current stack pointer, in an as	128	/* The next macros try to return the current stack pointer, in an as
123	* portable way as possible. */	129	* portable way as possible. */
124	#if __GNUC__ >= 4	130	#if __GNUC__ >= 4
		131	# define dSTACKLEVEL int stacklevel_dummy
125	# define dSTACKLEVEL void *stacklevel = __builtin_frame_address (0)	132	# define STACKLEVEL __builtin_frame_address (0)
126	#else	133	#else
127	# define dSTACKLEVEL volatile void *stacklevel = (volatile void *)&stacklevel	134	# define dSTACKLEVEL volatile void *stacklevel
		135	# define STACKLEVEL ((void *)&stacklevel)
128	#endif	136	#endif
129		137
130	#define IN_DESTRUCT (PL_main_cv == Nullcv)	138	#define IN_DESTRUCT (PL_main_cv == Nullcv)
131		139
132	#if __GNUC__ >= 3	140	#if __GNUC__ >= 3
…		…
143	#define expect_true(expr) expect ((expr) != 0, 1)	151	#define expect_true(expr) expect ((expr) != 0, 1)
144		152
145	#define NOINLINE attribute ((noinline))	153	#define NOINLINE attribute ((noinline))
146		154
147	#include "CoroAPI.h"	155	#include "CoroAPI.h"
		156	#define GCoroAPI (&coroapi) /* very sneaky */
148		157
149	#ifdef USE_ITHREADS	158	#ifdef USE_ITHREADS
150	# if CORO_PTHREAD	159	# if CORO_PTHREAD
151	static void *coro_thx;	160	static void *coro_thx;
152	# endif	161	# endif
…		…
164	static AV *main_mainstack; /* used to differentiate between $main and others */	173	static AV *main_mainstack; /* used to differentiate between $main and others */
165	static JMPENV *main_top_env;	174	static JMPENV *main_top_env;
166	static HV *coro_state_stash, *coro_stash;	175	static HV *coro_state_stash, *coro_stash;
167	static volatile SV *coro_mortal; /* will be freed/thrown after next transfer */	176	static volatile SV *coro_mortal; /* will be freed/thrown after next transfer */
168		177
		178	static AV *av_destroy; /* destruction queue */
		179	static SV *sv_manager; /* the manager coro */
		180
169	static GV *irsgv; /* $/ */	181	static GV *irsgv; /* $/ */
170	static GV *stdoutgv; /* *STDOUT */	182	static GV *stdoutgv; /* *STDOUT */
171	static SV *rv_diehook;	183	static SV *rv_diehook;
172	static SV *rv_warnhook;	184	static SV *rv_warnhook;
173	static HV *hv_sig; /* %SIG */	185	static HV *hv_sig; /* %SIG */
174		186
175	/* async_pool helper stuff */	187	/* async_pool helper stuff */
176	static SV *sv_pool_rss;	188	static SV *sv_pool_rss;
177	static SV *sv_pool_size;	189	static SV *sv_pool_size;
		190	static SV *sv_async_pool_idle; /* description string */
178	static AV *av_async_pool;	191	static AV *av_async_pool; /* idle pool */
		192	static SV *sv_Coro; /* class string */
		193	static CV *cv_pool_handler;
		194	static CV *cv_coro_state_new;
179		195
180	/* Coro::AnyEvent */	196	/* Coro::AnyEvent */
181	static SV *sv_activity;	197	static SV *sv_activity;
182		198
183	static struct coro_cctx *cctx_first;	199	static struct coro_cctx *cctx_first;
…		…
212	int valgrind_id;	228	int valgrind_id;
213	#endif	229	#endif
214	unsigned char flags;	230	unsigned char flags;
215	} coro_cctx;	231	} coro_cctx;
216		232
		233	coro_cctx *cctx_current; /* the currently running cctx */
		234
		235	/*****************************************************************************/
		236
217	enum {	237	enum {
218	CF_RUNNING = 0x0001, /* coroutine is running */	238	CF_RUNNING = 0x0001, /* coroutine is running */
219	CF_READY = 0x0002, /* coroutine is ready */	239	CF_READY = 0x0002, /* coroutine is ready */
220	CF_NEW = 0x0004, /* has never been switched to */	240	CF_NEW = 0x0004, /* has never been switched to */
221	CF_DESTROYED = 0x0008, /* coroutine data has been freed */	241	CF_DESTROYED = 0x0008, /* coroutine data has been freed */
…		…
243	/* state data */	263	/* state data */
244	struct CoroSLF slf_frame; /* saved slf frame */	264	struct CoroSLF slf_frame; /* saved slf frame */
245	AV *mainstack;	265	AV *mainstack;
246	perl_slots *slot; /* basically the saved sp */	266	perl_slots *slot; /* basically the saved sp */
247		267
		268	CV *startcv; /* the CV to execute */
248	AV *args; /* data associated with this coroutine (initial args) */	269	AV *args; /* data associated with this coroutine (initial args) */
249	int refcnt; /* coroutines are refcounted, yes */	270	int refcnt; /* coroutines are refcounted, yes */
250	int flags; /* CF_ flags */	271	int flags; /* CF_ flags */
251	HV *hv; /* the perl hash associated with this coro, if any */	272	HV *hv; /* the perl hash associated with this coro, if any */
252	void (*on_destroy)(pTHX_ struct coro *coro);	273	void (*on_destroy)(pTHX_ struct coro *coro);
253		274
254	/* statistics */	275	/* statistics */
255	int usecount; /* number of transfers to this coro */	276	int usecount; /* number of transfers to this coro */
256		277
257	/* coro process data */	278	/* coro process data */
258	int prio;	279	int prio;
259	SV *throw; /* exception to be thrown */	280	SV *except; /* exception to be thrown */
		281	SV *rouse_cb;
260		282
261	/* async_pool */	283	/* async_pool */
262	SV *saved_deffh;	284	SV *saved_deffh;
		285	SV *invoke_cb;
		286	AV *invoke_av;
263		287
264	/* linked list */	288	/* linked list */
265	struct coro *next, *prev;	289	struct coro *next, *prev;
266	};	290	};
267		291
…		…
270		294
271	/* the following variables are effectively part of the perl context */	295	/* the following variables are effectively part of the perl context */
272	/* and get copied between struct coro and these variables */	296	/* and get copied between struct coro and these variables */
273	/* the mainr easonw e don't support windows process emulation */	297	/* the mainr easonw e don't support windows process emulation */
274	static struct CoroSLF slf_frame; /* the current slf frame */	298	static struct CoroSLF slf_frame; /* the current slf frame */
275	static SV *coro_throw;
276		299
277	/** Coro ********************************************************************/	300	/** Coro ********************************************************************/
278		301
279	#define PRIO_MAX 3	302	#define PRIO_MAX 3
280	#define PRIO_HIGH 1	303	#define PRIO_HIGH 1
…		…
285		308
286	/* for Coro.pm */	309	/* for Coro.pm */
287	static SV *coro_current;	310	static SV *coro_current;
288	static SV *coro_readyhook;	311	static SV *coro_readyhook;
289	static AV *coro_ready [PRIO_MAX - PRIO_MIN + 1];	312	static AV *coro_ready [PRIO_MAX - PRIO_MIN + 1];
		313	static CV *cv_coro_run, *cv_coro_terminate;
290	static struct coro *coro_first;	314	static struct coro *coro_first;
291	#define coro_nready coroapi.nready	315	#define coro_nready coroapi.nready
292		316
293	/** lowlevel stuff **********************************************************/	317	/** lowlevel stuff **********************************************************/
294		318
…		…
320	get_hv (name, create);	344	get_hv (name, create);
321	#endif	345	#endif
322	return get_hv (name, create);	346	return get_hv (name, create);
323	}	347	}
324		348
		349	/* may croak */
		350	INLINE CV *
		351	coro_sv_2cv (pTHX_ SV *sv)
		352	{
		353	HV *st;
		354	GV *gvp;
		355	return sv_2cv (sv, &st, &gvp, 0);
		356	}
		357
325	static AV *	358	static AV *
326	coro_clone_padlist (pTHX_ CV *cv)	359	coro_derive_padlist (pTHX_ CV *cv)
327	{	360	{
328	AV *padlist = CvPADLIST (cv);	361	AV *padlist = CvPADLIST (cv);
329	AV *newpadlist, *newpad;	362	AV *newpadlist, *newpad;
330		363
331	newpadlist = newAV ();	364	newpadlist = newAV ();
…		…
446	else	479	else
447	{	480	{
448	#if CORO_PREFER_PERL_FUNCTIONS	481	#if CORO_PREFER_PERL_FUNCTIONS
449	/* this is probably cleaner? but also slower! */	482	/* this is probably cleaner? but also slower! */
450	/* in practise, it seems to be less stable */	483	/* in practise, it seems to be less stable */
451	CV *cp = Perl_cv_clone (cv);	484	CV *cp = Perl_cv_clone (aTHX_ cv);
452	CvPADLIST (cv) = CvPADLIST (cp);	485	CvPADLIST (cv) = CvPADLIST (cp);
453	CvPADLIST (cp) = 0;	486	CvPADLIST (cp) = 0;
454	SvREFCNT_dec (cp);	487	SvREFCNT_dec (cp);
455	#else	488	#else
456	CvPADLIST (cv) = coro_clone_padlist (aTHX_ cv);	489	CvPADLIST (cv) = coro_derive_padlist (aTHX_ cv);
457	#endif	490	#endif
458	}	491	}
459	}	492	}
460		493
461	static void	494	static void
…		…
509		542
510	PUTBACK;	543	PUTBACK;
511	}	544	}
512		545
513	slf_frame = c->slf_frame;	546	slf_frame = c->slf_frame;
514	coro_throw = c->throw;	547	CORO_THROW = c->except;
515	}	548	}
516		549
517	static void	550	static void
518	save_perl (pTHX_ Coro__State c)	551	save_perl (pTHX_ Coro__State c)
519	{	552	{
520	c->throw = coro_throw;	553	c->except = CORO_THROW;
521	c->slf_frame = slf_frame;	554	c->slf_frame = slf_frame;
522		555
523	{	556	{
524	dSP;	557	dSP;
525	I32 cxix = cxstack_ix;	558	I32 cxix = cxstack_ix;
…		…
600	* of perl.c:init_stacks, except that it uses less memory	633	* of perl.c:init_stacks, except that it uses less memory
601	* on the (sometimes correct) assumption that coroutines do	634	* on the (sometimes correct) assumption that coroutines do
602	* not usually need a lot of stackspace.	635	* not usually need a lot of stackspace.
603	*/	636	*/
604	#if CORO_PREFER_PERL_FUNCTIONS	637	#if CORO_PREFER_PERL_FUNCTIONS
605	# define coro_init_stacks init_stacks	638	# define coro_init_stacks(thx) init_stacks ()
606	#else	639	#else
607	static void	640	static void
608	coro_init_stacks (pTHX)	641	coro_init_stacks (pTHX)
609	{	642	{
610	PL_curstackinfo = new_stackinfo(32, 8);	643	PL_curstackinfo = new_stackinfo(32, 8);
…		…
673	#if !PERL_VERSION_ATLEAST (5,10,0)	706	#if !PERL_VERSION_ATLEAST (5,10,0)
674	Safefree (PL_retstack);	707	Safefree (PL_retstack);
675	#endif	708	#endif
676	}	709	}
677		710
		711	#define CORO_RSS \
		712	rss += sizeof (SYM (curstackinfo)); \
		713	rss += (SYM (curstackinfo->si_cxmax) + 1) * sizeof (PERL_CONTEXT); \
		714	rss += sizeof (SV) + sizeof (struct xpvav) + (1 + AvMAX (SYM (curstack))) * sizeof (SV *); \
		715	rss += SYM (tmps_max) * sizeof (SV *); \
		716	rss += (SYM (markstack_max) - SYM (markstack_ptr)) * sizeof (I32); \
		717	rss += SYM (scopestack_max) * sizeof (I32); \
		718	rss += SYM (savestack_max) * sizeof (ANY);
		719
678	static size_t	720	static size_t
679	coro_rss (pTHX_ struct coro *coro)	721	coro_rss (pTHX_ struct coro *coro)
680	{	722	{
681	size_t rss = sizeof (*coro);	723	size_t rss = sizeof (*coro);
682		724
683	if (coro->mainstack)	725	if (coro->mainstack)
684	{	726	{
685	perl_slots tmp_slot;
686	perl_slots *slot;
687
688	if (coro->flags & CF_RUNNING)	727	if (coro->flags & CF_RUNNING)
689	{	728	{
690	slot = &tmp_slot;	729	#define SYM(sym) PL_ ## sym
691		730	CORO_RSS;
692	#define VAR(name,type) slot->name = PL_ ## name;
693	# include "state.h"
694	#undef VAR	731	#undef SYM
695	}	732	}
696	else	733	else
697	slot = coro->slot;
698
699	if (slot)
700	{	734	{
701	rss += sizeof (slot->curstackinfo);	735	#define SYM(sym) coro->slot->sym
702	rss += (slot->curstackinfo->si_cxmax + 1) * sizeof (PERL_CONTEXT);	736	CORO_RSS;
703	rss += sizeof (SV) + sizeof (struct xpvav) + (1 + AvMAX (slot->curstack)) * sizeof (SV *);	737	#undef SYM
704	rss += slot->tmps_max * sizeof (SV *);
705	rss += (slot->markstack_max - slot->markstack_ptr) * sizeof (I32);
706	rss += slot->scopestack_max * sizeof (I32);
707	rss += slot->savestack_max * sizeof (ANY);
708
709	#if !PERL_VERSION_ATLEAST (5,10,0)
710	rss += slot->retstack_max * sizeof (OP *);
711	#endif
712	}	738	}
713	}	739	}
714		740
715	return rss;	741	return rss;
716	}	742	}
…		…
818	slf_check_nop (pTHX_ struct CoroSLF *frame)	844	slf_check_nop (pTHX_ struct CoroSLF *frame)
819	{	845	{
820	return 0;	846	return 0;
821	}	847	}
822		848
		849	static int
		850	slf_check_repeat (pTHX_ struct CoroSLF *frame)
		851	{
		852	return 1;
		853	}
		854
823	static UNOP coro_setup_op;	855	static UNOP coro_setup_op;
824		856
825	static void NOINLINE /* noinline to keep it out of the transfer fast path */	857	static void NOINLINE /* noinline to keep it out of the transfer fast path */
826	coro_setup (pTHX_ struct coro *coro)	858	coro_setup (pTHX_ struct coro *coro)
827	{	859	{
…		…
857	{	889	{
858	dSP;	890	dSP;
859	UNOP myop;	891	UNOP myop;
860		892
861	Zero (&myop, 1, UNOP);	893	Zero (&myop, 1, UNOP);
862	myop.op_next = Nullop;	894	myop.op_next = Nullop;
		895	myop.op_type = OP_ENTERSUB;
863	myop.op_flags = OPf_WANT_VOID;	896	myop.op_flags = OPf_WANT_VOID;
864		897
865	PUSHMARK (SP);	898	PUSHMARK (SP);
866	XPUSHs (sv_2mortal (av_shift (GvAV (PL_defgv))));	899	PUSHs ((SV *)coro->startcv);
867	PUTBACK;	900	PUTBACK;
868	PL_op = (OP *)&myop;	901	PL_op = (OP *)&myop;
869	PL_op = PL_ppaddr[OP_ENTERSUB](aTHX);	902	PL_op = PL_ppaddr[OP_ENTERSUB](aTHX);
870	SPAGAIN;
871	}	903	}
872		904
873	/* this newly created coroutine might be run on an existing cctx which most	905	/* this newly created coroutine might be run on an existing cctx which most
874	* likely was suspended in pp_slf, so we have to emulate entering pp_slf here.	906	* likely was suspended in pp_slf, so we have to emulate entering pp_slf here.
875	*/	907	*/
876	slf_frame.prepare = prepare_nop; /* provide a nop function for an eventual pp_slf */	908	slf_frame.prepare = prepare_nop; /* provide a nop function for an eventual pp_slf */
877	slf_frame.check = slf_check_nop; /* signal pp_slf to not repeat */	909	slf_frame.check = slf_check_nop; /* signal pp_slf to not repeat */
878		910
879	/* and we have to provide the pp_slf op in any case, so pp_slf can skip it */	911	/* and we have to provide the pp_slf op in any case, so pp_slf can skip it */
		912	coro_setup_op.op_next = PL_op;
880	coro_setup_op.op_type = OP_CUSTOM;	913	coro_setup_op.op_type = OP_ENTERSUB;
881	coro_setup_op.op_ppaddr = pp_slf;	914	coro_setup_op.op_ppaddr = pp_slf;
882	coro_setup_op.op_next = PL_op;	915	/* no flags etc. required, as an init function won't be called */
883		916
884	PL_op = (OP *)&coro_setup_op;	917	PL_op = (OP *)&coro_setup_op;
885		918
886	/* copy throw, in case it was set before coro_setup */	919	/* copy throw, in case it was set before coro_setup */
887	coro_throw = coro->throw;	920	CORO_THROW = coro->except;
888	}	921	}
889		922
890	static void	923	static void
891	coro_destruct (pTHX_ struct coro *coro)	924	coro_destruct (pTHX_ struct coro *coro)
892	{	925	{
…		…
916		949
917	SvREFCNT_dec (PL_diehook);	950	SvREFCNT_dec (PL_diehook);
918	SvREFCNT_dec (PL_warnhook);	951	SvREFCNT_dec (PL_warnhook);
919		952
920	SvREFCNT_dec (coro->saved_deffh);	953	SvREFCNT_dec (coro->saved_deffh);
921	SvREFCNT_dec (coro_throw);	954	SvREFCNT_dec (coro->rouse_cb);
		955	SvREFCNT_dec (coro->invoke_cb);
		956	SvREFCNT_dec (coro->invoke_av);
922		957
923	coro_destruct_stacks (aTHX);	958	coro_destruct_stacks (aTHX);
924	}	959	}
925		960
926	INLINE void	961	INLINE void
…		…
936	static int	971	static int
937	runops_trace (pTHX)	972	runops_trace (pTHX)
938	{	973	{
939	COP *oldcop = 0;	974	COP *oldcop = 0;
940	int oldcxix = -2;	975	int oldcxix = -2;
941	struct coro *coro = SvSTATE_current; /* trace cctx is tied to specific coro */
942	coro_cctx *cctx = coro->cctx;
943		976
944	while ((PL_op = CALL_FPTR (PL_op->op_ppaddr) (aTHX)))	977	while ((PL_op = CALL_FPTR (PL_op->op_ppaddr) (aTHX)))
945	{	978	{
946	PERL_ASYNC_CHECK ();	979	PERL_ASYNC_CHECK ();
947		980
948	if (cctx->flags & CC_TRACE_ALL)	981	if (cctx_current->flags & CC_TRACE_ALL)
949	{	982	{
950	if (PL_op->op_type == OP_LEAVESUB && cctx->flags & CC_TRACE_SUB)	983	if (PL_op->op_type == OP_LEAVESUB && cctx_current->flags & CC_TRACE_SUB)
951	{	984	{
952	PERL_CONTEXT *cx = &cxstack[cxstack_ix];	985	PERL_CONTEXT *cx = &cxstack[cxstack_ix];
953	SV **bot, **top;	986	SV **bot, **top;
954	AV *av = newAV (); /* return values */	987	AV *av = newAV (); /* return values */
955	SV **cb;	988	SV **cb;
…		…
992		1025
993	if (PL_curcop != &PL_compiling)	1026	if (PL_curcop != &PL_compiling)
994	{	1027	{
995	SV **cb;	1028	SV **cb;
996		1029
997	if (oldcxix != cxstack_ix && cctx->flags & CC_TRACE_SUB)	1030	if (oldcxix != cxstack_ix && cctx_current->flags & CC_TRACE_SUB)
998	{	1031	{
999	PERL_CONTEXT *cx = &cxstack[cxstack_ix];	1032	PERL_CONTEXT *cx = &cxstack[cxstack_ix];
1000		1033
1001	if (CxTYPE (cx) == CXt_SUB && oldcxix < cxstack_ix)	1034	if (CxTYPE (cx) == CXt_SUB && oldcxix < cxstack_ix)
1002	{	1035	{
1003	runops_proc_t old_runops = PL_runops;
1004	dSP;	1036	dSP;
1005	GV *gv = CvGV (cx->blk_sub.cv);	1037	GV *gv = CvGV (cx->blk_sub.cv);
1006	SV *fullname = sv_2mortal (newSV (0));	1038	SV *fullname = sv_2mortal (newSV (0));
1007		1039
1008	if (isGV (gv))	1040	if (isGV (gv))
…		…
1013	SAVETMPS;	1045	SAVETMPS;
1014	EXTEND (SP, 3);	1046	EXTEND (SP, 3);
1015	PUSHMARK (SP);	1047	PUSHMARK (SP);
1016	PUSHs (&PL_sv_yes);	1048	PUSHs (&PL_sv_yes);
1017	PUSHs (fullname);	1049	PUSHs (fullname);
1018	PUSHs (CxHASARGS (cx) ? sv_2mortal (newRV_inc ((SV *)cx->blk_sub.argarray)) : &PL_sv_undef);	1050	PUSHs (CxHASARGS (cx) ? sv_2mortal (newRV_inc ((SV *)cx->blk_sub.argarray)) : &PL_sv_undef);
1019	PUTBACK;	1051	PUTBACK;
1020	cb = hv_fetch ((HV *)SvRV (coro_current), "_trace_sub_cb", sizeof ("_trace_sub_cb") - 1, 0);	1052	cb = hv_fetch ((HV *)SvRV (coro_current), "_trace_sub_cb", sizeof ("_trace_sub_cb") - 1, 0);
1021	if (cb) call_sv (*cb, G_KEEPERR | G_EVAL | G_VOID | G_DISCARD);	1053	if (cb) call_sv (*cb, G_KEEPERR | G_EVAL | G_VOID | G_DISCARD);
1022	SPAGAIN;	1054	SPAGAIN;
1023	FREETMPS;	1055	FREETMPS;
…		…
1026	}	1058	}
1027		1059
1028	oldcxix = cxstack_ix;	1060	oldcxix = cxstack_ix;
1029	}	1061	}
1030		1062
1031	if (cctx->flags & CC_TRACE_LINE)	1063	if (cctx_current->flags & CC_TRACE_LINE)
1032	{	1064	{
1033	dSP;	1065	dSP;
1034		1066
1035	PL_runops = RUNOPS_DEFAULT;	1067	PL_runops = RUNOPS_DEFAULT;
1036	ENTER;	1068	ENTER;
…		…
1055		1087
1056	TAINT_NOT;	1088	TAINT_NOT;
1057	return 0;	1089	return 0;
1058	}	1090	}
1059		1091
1060	static struct coro_cctx *cctx_ssl_cctx;
1061	static struct CoroSLF cctx_ssl_frame;	1092	static struct CoroSLF cctx_ssl_frame;
1062		1093
1063	static void	1094	static void
1064	slf_prepare_set_stacklevel (pTHX_ struct coro_transfer_args *ta)	1095	slf_prepare_set_stacklevel (pTHX_ struct coro_transfer_args *ta)
1065	{	1096	{
1066	ta->prev = (struct coro *)cctx_ssl_cctx;
1067	ta->next = 0;	1097	ta->prev = 0;
1068	}	1098	}
1069		1099
1070	static int	1100	static int
1071	slf_check_set_stacklevel (pTHX_ struct CoroSLF *frame)	1101	slf_check_set_stacklevel (pTHX_ struct CoroSLF *frame)
1072	{	1102	{
1073	*frame = cctx_ssl_frame;	1103	*frame = cctx_ssl_frame;
1074		1104
1075	return 1;	1105	return frame->check (aTHX_ frame); /* execute the restored frame - there must be one */
1076	}	1106	}
1077		1107
1078	/* initialises PL_top_env and injects a pseudo-slf-call to sett he stacklevel */	1108	/* initialises PL_top_env and injects a pseudo-slf-call to set the stacklevel */
1079	static void NOINLINE	1109	static void NOINLINE
1080	cctx_prepare (pTHX_ coro_cctx *cctx)	1110	cctx_prepare (pTHX)
1081	{	1111	{
1082	PL_top_env = &PL_start_env;	1112	PL_top_env = &PL_start_env;
1083		1113
1084	if (cctx->flags & CC_TRACE)	1114	if (cctx_current->flags & CC_TRACE)
1085	PL_runops = runops_trace;	1115	PL_runops = runops_trace;
1086		1116
1087	/* we already must be in an SLF call, there is no other valid way	1117	/* we already must be executing an SLF op, there is no other valid way
1088	* that can lead to creation of a new cctx */	1118	* that can lead to creation of a new cctx */
1089	assert (("FATAL: can't prepare slf-less cctx in Coro module (please report)",	1119	assert (("FATAL: can't prepare slf-less cctx in Coro module (please report)",
1090	slf_frame.prepare && PL_op->op_ppaddr == pp_slf));	1120	slf_frame.prepare && PL_op->op_ppaddr == pp_slf));
1091		1121
1092	cctx_ssl_cctx = cctx;	1122	/* we must emulate leaving pp_slf, which is done inside slf_check_set_stacklevel */
1093	cctx_ssl_frame = slf_frame;	1123	cctx_ssl_frame = slf_frame;
1094		1124
1095	slf_frame.prepare = slf_prepare_set_stacklevel;	1125	slf_frame.prepare = slf_prepare_set_stacklevel;
1096	slf_frame.check = slf_check_set_stacklevel;	1126	slf_frame.check = slf_check_set_stacklevel;
1097	}	1127	}
…		…
1120	/* normally we would need to skip the entersub here */	1150	/* normally we would need to skip the entersub here */
1121	/* not doing so will re-execute it, which is exactly what we want */	1151	/* not doing so will re-execute it, which is exactly what we want */
1122	/* PL_nop = PL_nop->op_next */	1152	/* PL_nop = PL_nop->op_next */
1123		1153
1124	/* inject a fake subroutine call to cctx_init */	1154	/* inject a fake subroutine call to cctx_init */
1125	cctx_prepare (aTHX_ (coro_cctx *)arg);	1155	cctx_prepare (aTHX);
1126		1156
1127	/* cctx_run is the alternative tail of transfer() */	1157	/* cctx_run is the alternative tail of transfer() */
1128	transfer_tail (aTHX);	1158	transfer_tail (aTHX);
1129		1159
1130	/* somebody or something will hit me for both perl_run and PL_restartop */	1160	/* somebody or something will hit me for both perl_run and PL_restartop */
1131	PL_restartop = PL_op;	1161	PL_restartop = PL_op;
1132	perl_run (PL_curinterp);	1162	perl_run (PL_curinterp);
		1163	/*
		1164	* Unfortunately, there is no way to get at the return values of the
		1165	* coro body here, as perl_run destroys these
		1166	*/
1133		1167
1134	/*	1168	/*
1135	* If perl-run returns we assume exit() was being called or the coro	1169	* If perl-run returns we assume exit() was being called or the coro
1136	* fell off the end, which seems to be the only valid (non-bug)	1170	* fell off the end, which seems to be the only valid (non-bug)
1137	* reason for perl_run to return. We try to exit by jumping to the	1171	* reason for perl_run to return. We try to exit by jumping to the
…		…
1221	cctx_destroy (coro_cctx *cctx)	1255	cctx_destroy (coro_cctx *cctx)
1222	{	1256	{
1223	if (!cctx)	1257	if (!cctx)
1224	return;	1258	return;
1225		1259
		1260	assert (cctx != cctx_current);//D temporary
		1261
1226	--cctx_count;	1262	--cctx_count;
1227	coro_destroy (&cctx->cctx);	1263	coro_destroy (&cctx->cctx);
1228		1264
1229	/* coro_transfer creates new, empty cctx's */	1265	/* coro_transfer creates new, empty cctx's */
1230	if (cctx->sptr)	1266	if (cctx->sptr)
…		…
1315	transfer (pTHX_ struct coro *prev, struct coro *next, int force_cctx)	1351	transfer (pTHX_ struct coro *prev, struct coro *next, int force_cctx)
1316	{	1352	{
1317	dSTACKLEVEL;	1353	dSTACKLEVEL;
1318		1354
1319	/* sometimes transfer is only called to set idle_sp */	1355	/* sometimes transfer is only called to set idle_sp */
1320	if (expect_false (!next))	1356	if (expect_false (!prev))
1321	{	1357	{
1322	((coro_cctx *)prev)->idle_sp = (void *)stacklevel;	1358	cctx_current->idle_sp = STACKLEVEL;
1323	assert (((coro_cctx *)prev)->idle_te = PL_top_env); /* just for the side-effect when asserts are enabled */	1359	assert (cctx_current->idle_te = PL_top_env); /* just for the side-effect when asserts are enabled */
1324	}	1360	}
1325	else if (expect_true (prev != next))	1361	else if (expect_true (prev != next))
1326	{	1362	{
1327	coro_cctx *prev__cctx;	1363	coro_cctx *cctx_prev;
1328		1364
1329	if (expect_false (prev->flags & CF_NEW))	1365	if (expect_false (prev->flags & CF_NEW))
1330	{	1366	{
1331	/* create a new empty/source context */	1367	/* create a new empty/source context */
1332	prev->cctx = cctx_new_empty ();
1333	prev->flags &= ~CF_NEW;	1368	prev->flags &= ~CF_NEW;
1334	prev->flags |= CF_RUNNING;	1369	prev->flags |= CF_RUNNING;
1335	}	1370	}
1336		1371
1337	prev->flags &= ~CF_RUNNING;	1372	prev->flags &= ~CF_RUNNING;
…		…
1348	coro_setup (aTHX_ next);	1383	coro_setup (aTHX_ next);
1349	}	1384	}
1350	else	1385	else
1351	load_perl (aTHX_ next);	1386	load_perl (aTHX_ next);
1352		1387
1353	prev__cctx = prev->cctx;	1388	assert (!prev->cctx);//D temporary
1354		1389
1355	/* possibly untie and reuse the cctx */	1390	/* possibly untie and reuse the cctx */
1356	if (expect_true (	1391	if (expect_true (
1357	prev__cctx->idle_sp == (void *)stacklevel	1392	cctx_current->idle_sp == STACKLEVEL
1358	&& !(prev__cctx->flags & CC_TRACE)	1393	&& !(cctx_current->flags & CC_TRACE)
1359	&& !force_cctx	1394	&& !force_cctx
1360	))	1395	))
1361	{	1396	{
1362	/* I assume that stacklevel is a stronger indicator than PL_top_env changes */	1397	/* I assume that stacklevel is a stronger indicator than PL_top_env changes */
1363	assert (("FATAL: current top_env must equal previous top_env in Coro (please report)", PL_top_env == prev__cctx->idle_te));	1398	assert (("FATAL: current top_env must equal previous top_env in Coro (please report)", PL_top_env == cctx_current->idle_te));
1364		1399
1365	prev->cctx = 0;
1366
1367	/* if the cctx is about to be destroyed we need to make sure we won't see it in cctx_get */	1400	/* if the cctx is about to be destroyed we need to make sure we won't see it in cctx_get. */
1368	/* without this the next cctx_get might destroy the prev__cctx while still in use */	1401	/* without this the next cctx_get might destroy the running cctx while still in use */
1369	if (expect_false (CCTX_EXPIRED (prev__cctx)))	1402	if (expect_false (CCTX_EXPIRED (cctx_current)))
1370	if (!next->cctx)	1403	if (expect_true (!next->cctx))
1371	next->cctx = cctx_get (aTHX);	1404	next->cctx = cctx_get (aTHX);
1372		1405
1373	cctx_put (prev__cctx);	1406	cctx_put (cctx_current);
1374	}	1407	}
		1408	else
		1409	prev->cctx = cctx_current;
1375		1410
1376	++next->usecount;	1411	++next->usecount;
1377		1412
1378	if (expect_true (!next->cctx))	1413	cctx_prev = cctx_current;
1379	next->cctx = cctx_get (aTHX);	1414	cctx_current = expect_false (next->cctx) ? next->cctx : cctx_get (aTHX);
1380		1415
1381	if (expect_false (prev__cctx != next->cctx))	1416	next->cctx = 0;
		1417
		1418	if (expect_false (cctx_prev != cctx_current))
1382	{	1419	{
1383	prev__cctx->top_env = PL_top_env;	1420	cctx_prev->top_env = PL_top_env;
1384	PL_top_env = next->cctx->top_env;	1421	PL_top_env = cctx_current->top_env;
1385	coro_transfer (&prev__cctx->cctx, &next->cctx->cctx);	1422	coro_transfer (&cctx_prev->cctx, &cctx_current->cctx);
1386	}	1423	}
1387		1424
1388	transfer_tail (aTHX);	1425	transfer_tail (aTHX);
1389	}	1426	}
1390	}	1427	}
…		…
1429		1466
1430	coro->slot = 0;	1467	coro->slot = 0;
1431	}	1468	}
1432		1469
1433	cctx_destroy (coro->cctx);	1470	cctx_destroy (coro->cctx);
		1471	SvREFCNT_dec (coro->startcv);
1434	SvREFCNT_dec (coro->args);	1472	SvREFCNT_dec (coro->args);
		1473	SvREFCNT_dec (CORO_THROW);
1435		1474
1436	if (coro->next) coro->next->prev = coro->prev;	1475	if (coro->next) coro->next->prev = coro->prev;
1437	if (coro->prev) coro->prev->next = coro->next;	1476	if (coro->prev) coro->prev->next = coro->next;
1438	if (coro == coro_first) coro_first = coro->next;	1477	if (coro == coro_first) coro_first = coro->next;
1439		1478
…		…
1493		1532
1494	prepare_transfer (aTHX_ &ta, prev_sv, next_sv);	1533	prepare_transfer (aTHX_ &ta, prev_sv, next_sv);
1495	TRANSFER (ta, 1);	1534	TRANSFER (ta, 1);
1496	}	1535	}
1497		1536
		1537	/*****************************************************************************/
		1538	/* gensub: simple closure generation utility */
		1539
		1540	#define GENSUB_ARG CvXSUBANY (cv).any_ptr
		1541
		1542	/* create a closure from XS, returns a code reference */
		1543	/* the arg can be accessed via GENSUB_ARG from the callback */
		1544	/* the callback must use dXSARGS/XSRETURN */
		1545	static SV *
		1546	gensub (pTHX_ void (*xsub)(pTHX_ CV *), void *arg)
		1547	{
		1548	CV *cv = (CV *)newSV (0);
		1549
		1550	sv_upgrade ((SV *)cv, SVt_PVCV);
		1551
		1552	CvANON_on (cv);
		1553	CvISXSUB_on (cv);
		1554	CvXSUB (cv) = xsub;
		1555	GENSUB_ARG = arg;
		1556
		1557	return newRV_noinc ((SV *)cv);
		1558	}
		1559
1498	/** Coro ********************************************************************/	1560	/** Coro ********************************************************************/
1499		1561
1500	INLINE void	1562	INLINE void
1501	coro_enq (pTHX_ struct coro *coro)	1563	coro_enq (pTHX_ struct coro *coro)
1502	{	1564	{
…		…
1563	api_is_ready (pTHX_ SV *coro_sv)	1625	api_is_ready (pTHX_ SV *coro_sv)
1564	{	1626	{
1565	return !!(SvSTATE (coro_sv)->flags & CF_READY);	1627	return !!(SvSTATE (coro_sv)->flags & CF_READY);
1566	}	1628	}
1567		1629
		1630	/* expects to own a reference to next->hv */
1568	INLINE void	1631	INLINE void
		1632	prepare_schedule_to (pTHX_ struct coro_transfer_args *ta, struct coro *next)
		1633	{
		1634	SV *prev_sv = SvRV (coro_current);
		1635
		1636	ta->prev = SvSTATE_hv (prev_sv);
		1637	ta->next = next;
		1638
		1639	TRANSFER_CHECK (*ta);
		1640
		1641	SvRV_set (coro_current, (SV *)next->hv);
		1642
		1643	free_coro_mortal (aTHX);
		1644	coro_mortal = prev_sv;
		1645	}
		1646
		1647	static void
1569	prepare_schedule (pTHX_ struct coro_transfer_args *ta)	1648	prepare_schedule (pTHX_ struct coro_transfer_args *ta)
1570	{	1649	{
1571	SV *prev_sv, *next_sv;
1572
1573	for (;;)	1650	for (;;)
1574	{	1651	{
1575	next_sv = coro_deq (aTHX);	1652	SV *next_sv = coro_deq (aTHX);
1576		1653
1577	/* nothing to schedule: call the idle handler */
1578	if (expect_false (!next_sv))	1654	if (expect_true (next_sv))
1579	{	1655	{
		1656	struct coro *next = SvSTATE_hv (next_sv);
		1657
		1658	/* cannot transfer to destroyed coros, skip and look for next */
		1659	if (expect_false (next->flags & CF_DESTROYED))
		1660	SvREFCNT_dec (next_sv); /* coro_nready has already been taken care of by destroy */
		1661	else
		1662	{
		1663	next->flags &= ~CF_READY;
		1664	--coro_nready;
		1665
		1666	prepare_schedule_to (aTHX_ ta, next);
		1667	break;
		1668	}
		1669	}
		1670	else
		1671	{
		1672	/* nothing to schedule: call the idle handler */
1580	dSP;	1673	dSP;
1581		1674
1582	ENTER;	1675	ENTER;
1583	SAVETMPS;	1676	SAVETMPS;
1584		1677
…		…
1586	PUTBACK;	1679	PUTBACK;
1587	call_sv (get_sv ("Coro::idle", FALSE), G_VOID | G_DISCARD);	1680	call_sv (get_sv ("Coro::idle", FALSE), G_VOID | G_DISCARD);
1588		1681
1589	FREETMPS;	1682	FREETMPS;
1590	LEAVE;	1683	LEAVE;
1591	continue;
1592	}	1684	}
1593
1594	ta->next = SvSTATE_hv (next_sv);
1595
1596	/* cannot transfer to destroyed coros, skip and look for next */
1597	if (expect_false (ta->next->flags & CF_DESTROYED))
1598	{
1599	SvREFCNT_dec (next_sv);
1600	/* coro_nready has already been taken care of by destroy */
1601	continue;
1602	}
1603
1604	--coro_nready;
1605	break;
1606	}	1685	}
1607
1608	/* free this only after the transfer */
1609	prev_sv = SvRV (coro_current);
1610	ta->prev = SvSTATE_hv (prev_sv);
1611	TRANSFER_CHECK (*ta);
1612	assert (("FATAL: next coroutine isn't marked as ready in Coro (please report)", ta->next->flags & CF_READY));
1613	ta->next->flags &= ~CF_READY;
1614	SvRV_set (coro_current, next_sv);
1615
1616	free_coro_mortal (aTHX);
1617	coro_mortal = prev_sv;
1618	}	1686	}
1619		1687
1620	INLINE void	1688	INLINE void
1621	prepare_cede (pTHX_ struct coro_transfer_args *ta)	1689	prepare_cede (pTHX_ struct coro_transfer_args *ta)
1622	{	1690	{
…		…
1643	{	1711	{
1644	struct coro_transfer_args ta;	1712	struct coro_transfer_args ta;
1645		1713
1646	prepare_schedule (aTHX_ &ta);	1714	prepare_schedule (aTHX_ &ta);
1647	TRANSFER (ta, 1);	1715	TRANSFER (ta, 1);
		1716	}
		1717
		1718	static void
		1719	api_schedule_to (pTHX_ SV *coro_sv)
		1720	{
		1721	struct coro_transfer_args ta;
		1722	struct coro *next = SvSTATE (coro_sv);
		1723
		1724	SvREFCNT_inc_NN (coro_sv);
		1725	prepare_schedule_to (aTHX_ &ta, next);
1648	}	1726	}
1649		1727
1650	static int	1728	static int
1651	api_cede (pTHX)	1729	api_cede (pTHX)
1652	{	1730	{
…		…
1681	static void	1759	static void
1682	api_trace (pTHX_ SV *coro_sv, int flags)	1760	api_trace (pTHX_ SV *coro_sv, int flags)
1683	{	1761	{
1684	struct coro *coro = SvSTATE (coro_sv);	1762	struct coro *coro = SvSTATE (coro_sv);
1685		1763
		1764	if (coro->flags & CF_RUNNING)
		1765	croak ("cannot enable tracing on a running coroutine, caught");
		1766
1686	if (flags & CC_TRACE)	1767	if (flags & CC_TRACE)
1687	{	1768	{
1688	if (!coro->cctx)	1769	if (!coro->cctx)
1689	coro->cctx = cctx_new_run ();	1770	coro->cctx = cctx_new_run ();
1690	else if (!(coro->cctx->flags & CC_TRACE))	1771	else if (!(coro->cctx->flags & CC_TRACE))
1691	croak ("cannot enable tracing on coroutine with custom stack,");	1772	croak ("cannot enable tracing on coroutine with custom stack, caught");
1692		1773
1693	coro->cctx->flags |= CC_NOREUSE | (flags & (CC_TRACE | CC_TRACE_ALL));	1774	coro->cctx->flags |= CC_NOREUSE | (flags & (CC_TRACE | CC_TRACE_ALL));
1694	}	1775	}
1695	else if (coro->cctx && coro->cctx->flags & CC_TRACE)	1776	else if (coro->cctx && coro->cctx->flags & CC_TRACE)
1696	{	1777	{
…		…
1699	if (coro->flags & CF_RUNNING)	1780	if (coro->flags & CF_RUNNING)
1700	PL_runops = RUNOPS_DEFAULT;	1781	PL_runops = RUNOPS_DEFAULT;
1701	else	1782	else
1702	coro->slot->runops = RUNOPS_DEFAULT;	1783	coro->slot->runops = RUNOPS_DEFAULT;
1703	}	1784	}
		1785	}
		1786
		1787	static void
		1788	coro_call_on_destroy (pTHX_ struct coro *coro)
		1789	{
		1790	SV **on_destroyp = hv_fetch (coro->hv, "_on_destroy", sizeof ("_on_destroy") - 1, 0);
		1791	SV **statusp = hv_fetch (coro->hv, "_status", sizeof ("_status") - 1, 0);
		1792
		1793	if (on_destroyp)
		1794	{
		1795	AV *on_destroy = (AV *)SvRV (*on_destroyp);
		1796
		1797	while (AvFILLp (on_destroy) >= 0)
		1798	{
		1799	dSP; /* don't disturb outer sp */
		1800	SV *cb = av_pop (on_destroy);
		1801
		1802	PUSHMARK (SP);
		1803
		1804	if (statusp)
		1805	{
		1806	int i;
		1807	AV *status = (AV *)SvRV (*statusp);
		1808	EXTEND (SP, AvFILLp (status) + 1);
		1809
		1810	for (i = 0; i <= AvFILLp (status); ++i)
		1811	PUSHs (AvARRAY (status)[i]);
		1812	}
		1813
		1814	PUTBACK;
		1815	call_sv (sv_2mortal (cb), G_VOID | G_DISCARD);
		1816	}
		1817	}
		1818	}
		1819
		1820	static void
		1821	slf_init_terminate (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
		1822	{
		1823	int i;
		1824	HV *hv = (HV *)SvRV (coro_current);
		1825	AV *av = newAV ();
		1826
		1827	av_extend (av, items - 1);
		1828	for (i = 0; i < items; ++i)
		1829	av_push (av, SvREFCNT_inc_NN (arg [i]));
		1830
		1831	hv_store (hv, "_status", sizeof ("_status") - 1, newRV_noinc ((SV *)av), 0);
		1832
		1833	av_push (av_destroy, (SV *)newRV_inc ((SV *)hv)); /* RVinc for perl */
		1834	api_ready (aTHX_ sv_manager);
		1835
		1836	frame->prepare = prepare_schedule;
		1837	frame->check = slf_check_repeat;
		1838	}
		1839
		1840	/*****************************************************************************/
		1841	/* async pool handler */
		1842
		1843	static int
		1844	slf_check_pool_handler (pTHX_ struct CoroSLF *frame)
		1845	{
		1846	HV *hv = (HV *)SvRV (coro_current);
		1847	struct coro *coro = (struct coro *)frame->data;
		1848
		1849	if (!coro->invoke_cb)
		1850	return 1; /* loop till we have invoke */
		1851	else
		1852	{
		1853	hv_store (hv, "desc", sizeof ("desc") - 1,
		1854	newSVpvn ("[async_pool]", sizeof ("[async_pool]") - 1), 0);
		1855
		1856	coro->saved_deffh = SvREFCNT_inc_NN ((SV *)PL_defoutgv);
		1857
		1858	{
		1859	dSP;
		1860	XPUSHs (sv_2mortal (coro->invoke_cb)); coro->invoke_cb = 0;
		1861	PUTBACK;
		1862	}
		1863
		1864	SvREFCNT_dec (GvAV (PL_defgv));
		1865	GvAV (PL_defgv) = coro->invoke_av;
		1866	coro->invoke_av = 0;
		1867
		1868	return 0;
		1869	}
		1870	}
		1871
		1872	static void
		1873	slf_init_pool_handler (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
		1874	{
		1875	HV *hv = (HV *)SvRV (coro_current);
		1876	struct coro *coro = SvSTATE_hv ((SV *)hv);
		1877
		1878	if (expect_true (coro->saved_deffh))
		1879	{
		1880	/* subsequent iteration */
		1881	SvREFCNT_dec ((SV *)PL_defoutgv); PL_defoutgv = (GV *)coro->saved_deffh;
		1882	coro->saved_deffh = 0;
		1883
		1884	if (coro_rss (aTHX_ coro) > SvUV (sv_pool_rss)
		1885	|| av_len (av_async_pool) + 1 >= SvIV (sv_pool_size))
		1886	{
		1887	coro->invoke_cb = SvREFCNT_inc_NN ((SV *)cv_coro_terminate);
		1888	coro->invoke_av = newAV ();
		1889
		1890	frame->prepare = prepare_nop;
		1891	}
		1892	else
		1893	{
		1894	av_clear (GvAV (PL_defgv));
		1895	hv_store (hv, "desc", sizeof ("desc") - 1, SvREFCNT_inc_NN (sv_async_pool_idle), 0);
		1896
		1897	coro->prio = 0;
		1898
		1899	if (coro->cctx && (coro->cctx->flags & CC_TRACE))
		1900	api_trace (aTHX_ coro_current, 0);
		1901
		1902	frame->prepare = prepare_schedule;
		1903	av_push (av_async_pool, SvREFCNT_inc (hv));
		1904	}
		1905	}
		1906	else
		1907	{
		1908	/* first iteration, simply fall through */
		1909	frame->prepare = prepare_nop;
		1910	}
		1911
		1912	frame->check = slf_check_pool_handler;
		1913	frame->data = (void *)coro;
		1914	}
		1915
		1916	/*****************************************************************************/
		1917	/* rouse callback */
		1918
		1919	#define CORO_MAGIC_type_rouse PERL_MAGIC_ext
		1920
		1921	static void
		1922	coro_rouse_callback (pTHX_ CV *cv)
		1923	{
		1924	dXSARGS;
		1925	SV *data = (SV *)GENSUB_ARG;
		1926
		1927	if (SvTYPE (SvRV (data)) != SVt_PVAV)
		1928	{
		1929	/* first call, set args */
		1930	AV *av = newAV ();
		1931	SV *coro = SvRV (data);
		1932
		1933	SvRV_set (data, (SV *)av);
		1934	api_ready (aTHX_ coro);
		1935	SvREFCNT_dec (coro);
		1936
		1937	/* better take a full copy of the arguments */
		1938	while (items--)
		1939	av_store (av, items, newSVsv (ST (items)));
		1940	}
		1941
		1942	XSRETURN_EMPTY;
		1943	}
		1944
		1945	static int
		1946	slf_check_rouse_wait (pTHX_ struct CoroSLF *frame)
		1947	{
		1948	SV *data = (SV *)frame->data;
		1949
		1950	if (CORO_THROW)
		1951	return 0;
		1952
		1953	if (SvTYPE (SvRV (data)) != SVt_PVAV)
		1954	return 1;
		1955
		1956	/* now push all results on the stack */
		1957	{
		1958	dSP;
		1959	AV *av = (AV *)SvRV (data);
		1960	int i;
		1961
		1962	EXTEND (SP, AvFILLp (av) + 1);
		1963	for (i = 0; i <= AvFILLp (av); ++i)
		1964	PUSHs (sv_2mortal (AvARRAY (av)[i]));
		1965
		1966	/* we have stolen the elements, so ste length to zero and free */
		1967	AvFILLp (av) = -1;
		1968	av_undef (av);
		1969
		1970	PUTBACK;
		1971	}
		1972
		1973	return 0;
		1974	}
		1975
		1976	static void
		1977	slf_init_rouse_wait (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
		1978	{
		1979	SV *cb;
		1980
		1981	if (items)
		1982	cb = arg [0];
		1983	else
		1984	{
		1985	struct coro *coro = SvSTATE_current;
		1986
		1987	if (!coro->rouse_cb)
		1988	croak ("Coro::rouse_wait called without rouse callback, and no default rouse callback found either,");
		1989
		1990	cb = sv_2mortal (coro->rouse_cb);
		1991	coro->rouse_cb = 0;
		1992	}
		1993
		1994	if (!SvROK (cb)
		1995	|| SvTYPE (SvRV (cb)) != SVt_PVCV
		1996	|| CvXSUB ((CV *)SvRV (cb)) != coro_rouse_callback)
		1997	croak ("Coro::rouse_wait called with illegal callback argument,");
		1998
		1999	{
		2000	CV *cv = (CV *)SvRV (cb); /* for GENSUB_ARG */
		2001	SV *data = (SV *)GENSUB_ARG;
		2002
		2003	frame->data = (void *)data;
		2004	frame->prepare = SvTYPE (SvRV (data)) == SVt_PVAV ? prepare_nop : prepare_schedule;
		2005	frame->check = slf_check_rouse_wait;
		2006	}
		2007	}
		2008
		2009	static SV *
		2010	coro_new_rouse_cb (pTHX)
		2011	{
		2012	HV *hv = (HV *)SvRV (coro_current);
		2013	struct coro *coro = SvSTATE_hv (hv);
		2014	SV *data = newRV_inc ((SV *)hv);
		2015	SV *cb = gensub (aTHX_ coro_rouse_callback, (void *)data);
		2016
		2017	sv_magicext (SvRV (cb), data, CORO_MAGIC_type_rouse, 0, 0, 0);
		2018	SvREFCNT_dec (data); /* magicext increases the refcount */
		2019
		2020	SvREFCNT_dec (coro->rouse_cb);
		2021	coro->rouse_cb = SvREFCNT_inc_NN (cb);
		2022
		2023	return cb;
1704	}	2024	}
1705		2025
1706	/*****************************************************************************/	2026	/*****************************************************************************/
1707	/* schedule-like-function opcode (SLF) */	2027	/* schedule-like-function opcode (SLF) */
1708		2028
…		…
1755	static void	2075	static void
1756	slf_init_schedule (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)	2076	slf_init_schedule (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
1757	{	2077	{
1758	frame->prepare = prepare_schedule;	2078	frame->prepare = prepare_schedule;
1759	frame->check = slf_check_nop;	2079	frame->check = slf_check_nop;
		2080	}
		2081
		2082	static void
		2083	slf_prepare_schedule_to (pTHX_ struct coro_transfer_args *ta)
		2084	{
		2085	struct coro *next = (struct coro *)slf_frame.data;
		2086
		2087	SvREFCNT_inc_NN (next->hv);
		2088	prepare_schedule_to (aTHX_ ta, next);
		2089	}
		2090
		2091	static void
		2092	slf_init_schedule_to (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
		2093	{
		2094	if (!items)
		2095	croak ("Coro::schedule_to expects a coroutine argument, caught");
		2096
		2097	frame->data = (void *)SvSTATE (arg [0]);
		2098	frame->prepare = slf_prepare_schedule_to;
		2099	frame->check = slf_check_nop;
		2100	}
		2101
		2102	static void
		2103	slf_init_cede_to (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
		2104	{
		2105	api_ready (aTHX_ SvRV (coro_current));
		2106
		2107	slf_init_schedule_to (aTHX_ frame, cv, arg, items);
1760	}	2108	}
1761		2109
1762	static void	2110	static void
1763	slf_init_cede (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)	2111	slf_init_cede (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
1764	{	2112	{
…		…
1835	}	2183	}
1836	while (slf_frame.check (aTHX_ &slf_frame));	2184	while (slf_frame.check (aTHX_ &slf_frame));
1837		2185
1838	slf_frame.prepare = 0; /* invalidate the frame, we are done processing it */	2186	slf_frame.prepare = 0; /* invalidate the frame, we are done processing it */
1839		2187
		2188	/* exception handling */
		2189	if (expect_false (CORO_THROW))
		2190	{
		2191	SV *exception = sv_2mortal (CORO_THROW);
		2192
		2193	CORO_THROW = 0;
		2194	sv_setsv (ERRSV, exception);
		2195	croak (0);
		2196	}
		2197
1840	/* return value handling - mostly like entersub */	2198	/* return value handling - mostly like entersub */
1841	/* make sure we put something on the stack in scalar context */	2199	/* make sure we put something on the stack in scalar context */
1842	if (GIMME_V == G_SCALAR)	2200	if (GIMME_V == G_SCALAR)
1843	{	2201	{
1844	dSP;	2202	dSP;
…		…
1850	bot [1] = *sp;	2208	bot [1] = *sp;
1851		2209
1852	SP = bot + 1;	2210	SP = bot + 1;
1853		2211
1854	PUTBACK;	2212	PUTBACK;
1855	}
1856
1857	/* exception handling */
1858	if (expect_false (coro_throw))
1859	{
1860	SV *exception = sv_2mortal (coro_throw);
1861
1862	coro_throw = 0;
1863	sv_setsv (ERRSV, exception);
1864	croak (0);
1865	}	2213	}
1866		2214
1867	return NORMAL;	2215	return NORMAL;
1868	}	2216	}
1869		2217
…		…
1910	}	2258	}
1911	else	2259	else
1912	slf_argc = 0;	2260	slf_argc = 0;
1913		2261
1914	PL_op->op_ppaddr = pp_slf;	2262	PL_op->op_ppaddr = pp_slf;
1915	PL_op->op_type = OP_CUSTOM; /* maybe we should leave it at entersub? */	2263	/*PL_op->op_type = OP_CUSTOM; /* we do behave like entersub still */
1916		2264
1917	PL_op = (OP *)&slf_restore;	2265	PL_op = (OP *)&slf_restore;
1918	}	2266	}
1919		2267
1920	/*****************************************************************************/	2268	/*****************************************************************************/
…		…
1991	PerlIOBuf_get_cnt,	2339	PerlIOBuf_get_cnt,
1992	PerlIOBuf_set_ptrcnt,	2340	PerlIOBuf_set_ptrcnt,
1993	};	2341	};
1994		2342
1995	/*****************************************************************************/	2343	/*****************************************************************************/
		2344	/* Coro::Semaphore & Coro::Signal */
		2345
		2346	static SV *
		2347	coro_waitarray_new (pTHX_ int count)
		2348	{
		2349	/* a semaphore contains a counter IV in $sem->[0] and any waiters after that */
		2350	AV *av = newAV ();
		2351	SV **ary;
		2352
		2353	/* unfortunately, building manually saves memory */
		2354	Newx (ary, 2, SV *);
		2355	AvALLOC (av) = ary;
		2356	/*AvARRAY (av) = ary;*/
		2357	SvPVX ((SV *)av) = (char *)ary; /* 5.8.8 needs this syntax instead of AvARRAY = ary */
		2358	AvMAX (av) = 1;
		2359	AvFILLp (av) = 0;
		2360	ary [0] = newSViv (count);
		2361
		2362	return newRV_noinc ((SV *)av);
		2363	}
		2364
1996	/* Coro::Semaphore */	2365	/* semaphore */
1997		2366
1998	static void	2367	static void
1999	coro_semaphore_adjust (pTHX_ AV *av, IV adjust)	2368	coro_semaphore_adjust (pTHX_ AV *av, IV adjust)
2000	{	2369	{
2001	SV *count_sv = AvARRAY (av)[0];	2370	SV *count_sv = AvARRAY (av)[0];
…		…
2013	AvARRAY (av)[0] = AvARRAY (av)[1];	2382	AvARRAY (av)[0] = AvARRAY (av)[1];
2014	AvARRAY (av)[1] = count_sv;	2383	AvARRAY (av)[1] = count_sv;
2015	cb = av_shift (av);	2384	cb = av_shift (av);
2016		2385
2017	if (SvOBJECT (cb))	2386	if (SvOBJECT (cb))
		2387	{
2018	api_ready (aTHX_ cb);	2388	api_ready (aTHX_ cb);
2019	else	2389	--count;
2020	croak ("callbacks not yet supported");	2390	}
		2391	else if (SvTYPE (cb) == SVt_PVCV)
		2392	{
		2393	dSP;
		2394	PUSHMARK (SP);
		2395	XPUSHs (sv_2mortal (newRV_inc ((SV *)av)));
		2396	PUTBACK;
		2397	call_sv (cb, G_VOID | G_DISCARD | G_EVAL | G_KEEPERR);
		2398	}
2021		2399
2022	SvREFCNT_dec (cb);	2400	SvREFCNT_dec (cb);
2023
2024	--count;
2025	}	2401	}
2026	}	2402	}
2027		2403
2028	static void	2404	static void
2029	coro_semaphore_on_destroy (pTHX_ struct coro *coro)	2405	coro_semaphore_on_destroy (pTHX_ struct coro *coro)
…		…
2031	/* call $sem->adjust (0) to possibly wake up some other waiters */	2407	/* call $sem->adjust (0) to possibly wake up some other waiters */
2032	coro_semaphore_adjust (aTHX_ (AV *)coro->slf_frame.data, 0);	2408	coro_semaphore_adjust (aTHX_ (AV *)coro->slf_frame.data, 0);
2033	}	2409	}
2034		2410
2035	static int	2411	static int
2036	slf_check_semaphore_down (pTHX_ struct CoroSLF *frame)	2412	slf_check_semaphore_down_or_wait (pTHX_ struct CoroSLF *frame, int acquire)
2037	{	2413	{
2038	AV *av = (AV *)frame->data;	2414	AV *av = (AV *)frame->data;
2039	SV *count_sv = AvARRAY (av)[0];	2415	SV *count_sv = AvARRAY (av)[0];
2040		2416
		2417	/* if we are about to throw, don't actually acquire the lock, just throw */
		2418	if (CORO_THROW)
		2419	return 0;
2041	if (SvIVX (count_sv) > 0)	2420	else if (SvIVX (count_sv) > 0)
2042	{	2421	{
2043	SvSTATE_current->on_destroy = 0;	2422	SvSTATE_current->on_destroy = 0;
		2423
		2424	if (acquire)
2044	SvIVX (count_sv) = SvIVX (count_sv) - 1;	2425	SvIVX (count_sv) = SvIVX (count_sv) - 1;
		2426	else
		2427	coro_semaphore_adjust (aTHX_ av, 0);
		2428
2045	return 0;	2429	return 0;
2046	}	2430	}
2047	else	2431	else
2048	{	2432	{
2049	int i;	2433	int i;
…		…
2058	av_push (av, SvREFCNT_inc (SvRV (coro_current)));	2442	av_push (av, SvREFCNT_inc (SvRV (coro_current)));
2059	return 1;	2443	return 1;
2060	}	2444	}
2061	}	2445	}
2062		2446
2063	static void	2447	static int
		2448	slf_check_semaphore_down (pTHX_ struct CoroSLF *frame)
		2449	{
		2450	return slf_check_semaphore_down_or_wait (aTHX_ frame, 1);
		2451	}
		2452
		2453	static int
		2454	slf_check_semaphore_wait (pTHX_ struct CoroSLF *frame)
		2455	{
		2456	return slf_check_semaphore_down_or_wait (aTHX_ frame, 0);
		2457	}
		2458
		2459	static void
2064	slf_init_semaphore_down (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)	2460	slf_init_semaphore_down_or_wait (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
2065	{	2461	{
2066	AV *av = (AV *)SvRV (arg [0]);	2462	AV *av = (AV *)SvRV (arg [0]);
2067		2463
2068	if (SvIVX (AvARRAY (av)[0]) > 0)	2464	if (SvIVX (AvARRAY (av)[0]) > 0)
2069	{	2465	{
2070	frame->data = (void *)av;	2466	frame->data = (void *)av;
2071	frame->prepare = prepare_nop;	2467	frame->prepare = prepare_nop;
2072	SvSTATE_current->on_destroy = coro_semaphore_on_destroy;
2073	}	2468	}
2074	else	2469	else
2075	{	2470	{
2076	av_push (av, SvREFCNT_inc (SvRV (coro_current)));	2471	av_push (av, SvREFCNT_inc (SvRV (coro_current)));
2077		2472
2078	frame->data = (void *)sv_2mortal (SvREFCNT_inc ((SV *)av));	2473	frame->data = (void *)sv_2mortal (SvREFCNT_inc ((SV *)av));
2079	frame->prepare = prepare_schedule;	2474	frame->prepare = prepare_schedule;
2080		2475
2081	/* to avoid race conditions when a woken-up coro gets terminated */	2476	/* to avoid race conditions when a woken-up coro gets terminated */
2082	/* we arrange for a temporary on_destroy that calls adjust (0) */	2477	/* we arrange for a temporary on_destroy that calls adjust (0) */
2083	assert (!SvSTATE_current->on_destroy);//D
2084	SvSTATE_current->on_destroy = coro_semaphore_on_destroy;	2478	SvSTATE_current->on_destroy = coro_semaphore_on_destroy;
2085	}	2479	}
		2480	}
2086		2481
		2482	static void
		2483	slf_init_semaphore_down (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
		2484	{
		2485	slf_init_semaphore_down_or_wait (aTHX_ frame, cv, arg, items);
2087	frame->check = slf_check_semaphore_down;	2486	frame->check = slf_check_semaphore_down;
2088
2089	}	2487	}
2090		2488
2091	/*****************************************************************************/	2489	static void
2092	/* gensub: simple closure generation utility */	2490	slf_init_semaphore_wait (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
2093
2094	#define GENSUB_ARG CvXSUBANY (cv).any_ptr
2095
2096	/* create a closure from XS, returns a code reference */
2097	/* the arg can be accessed via GENSUB_ARG from the callback */
2098	/* the callback must use dXSARGS/XSRETURN */
2099	static SV *
2100	gensub (pTHX_ void (*xsub)(pTHX_ CV *), void *arg)
2101	{	2491	{
2102	CV *cv = (CV *)newSV (0);	2492	if (items >= 2)
		2493	{
		2494	/* callback form */
		2495	AV *av = (AV *)SvRV (arg [0]);
		2496	CV *cb_cv = coro_sv_2cv (aTHX_ arg [1]);
2103		2497
2104	sv_upgrade ((SV *)cv, SVt_PVCV);	2498	av_push (av, (SV *)SvREFCNT_inc_NN (cb_cv));
2105		2499
2106	CvANON_on (cv);	2500	if (SvIVX (AvARRAY (av)[0]) > 0)
2107	CvISXSUB_on (cv);	2501	coro_semaphore_adjust (aTHX_ av, 0);
2108	CvXSUB (cv) = xsub;
2109	GENSUB_ARG = arg;
2110		2502
2111	return newRV_noinc ((SV *)cv);	2503	frame->prepare = prepare_nop;
		2504	frame->check = slf_check_nop;
		2505	}
		2506	else
		2507	{
		2508	slf_init_semaphore_down_or_wait (aTHX_ frame, cv, arg, items);
		2509	frame->check = slf_check_semaphore_wait;
		2510	}
		2511	}
		2512
		2513	/* signal */
		2514
		2515	static void
		2516	coro_signal_wake (pTHX_ AV *av, int count)
		2517	{
		2518	SvIVX (AvARRAY (av)[0]) = 0;
		2519
		2520	/* now signal count waiters */
		2521	while (count > 0 && AvFILLp (av) > 0)
		2522	{
		2523	SV *cb;
		2524
		2525	/* swap first two elements so we can shift a waiter */
		2526	cb = AvARRAY (av)[0];
		2527	AvARRAY (av)[0] = AvARRAY (av)[1];
		2528	AvARRAY (av)[1] = cb;
		2529
		2530	cb = av_shift (av);
		2531
		2532	api_ready (aTHX_ cb);
		2533	sv_setiv (cb, 0); /* signal waiter */
		2534	SvREFCNT_dec (cb);
		2535
		2536	--count;
		2537	}
		2538	}
		2539
		2540	static int
		2541	slf_check_signal_wait (pTHX_ struct CoroSLF *frame)
		2542	{
		2543	/* if we are about to throw, also stop waiting */
		2544	return SvROK ((SV *)frame->data) && !CORO_THROW;
		2545	}
		2546
		2547	static void
		2548	slf_init_signal_wait (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
		2549	{
		2550	AV *av = (AV *)SvRV (arg [0]);
		2551
		2552	if (SvIVX (AvARRAY (av)[0]))
		2553	{
		2554	SvIVX (AvARRAY (av)[0]) = 0;
		2555	frame->prepare = prepare_nop;
		2556	frame->check = slf_check_nop;
		2557	}
		2558	else
		2559	{
		2560	SV *waiter = newRV_inc (SvRV (coro_current)); /* owned by signal av */
		2561
		2562	av_push (av, waiter);
		2563
		2564	frame->data = (void *)sv_2mortal (SvREFCNT_inc_NN (waiter)); /* owned by process */
		2565	frame->prepare = prepare_schedule;
		2566	frame->check = slf_check_signal_wait;
		2567	}
2112	}	2568	}
2113		2569
2114	/*****************************************************************************/	2570	/*****************************************************************************/
2115	/* Coro::AIO */	2571	/* Coro::AIO */
2116		2572
…		…
2131	dXSARGS;	2587	dXSARGS;
2132	AV *state = (AV *)GENSUB_ARG;	2588	AV *state = (AV *)GENSUB_ARG;
2133	SV *coro = av_pop (state);	2589	SV *coro = av_pop (state);
2134	SV *data_sv = newSV (sizeof (struct io_state));	2590	SV *data_sv = newSV (sizeof (struct io_state));
2135		2591
2136	av_extend (state, items);	2592	av_extend (state, items - 1);
2137		2593
2138	sv_upgrade (data_sv, SVt_PV);	2594	sv_upgrade (data_sv, SVt_PV);
2139	SvCUR_set (data_sv, sizeof (struct io_state));	2595	SvCUR_set (data_sv, sizeof (struct io_state));
2140	SvPOK_only (data_sv);	2596	SvPOK_only (data_sv);
2141		2597
…		…
2166	static int	2622	static int
2167	slf_check_aio_req (pTHX_ struct CoroSLF *frame)	2623	slf_check_aio_req (pTHX_ struct CoroSLF *frame)
2168	{	2624	{
2169	AV *state = (AV *)frame->data;	2625	AV *state = (AV *)frame->data;
2170		2626
		2627	/* if we are about to throw, return early */
		2628	/* this does not cancel the aio request, but at least */
		2629	/* it quickly returns */
		2630	if (CORO_THROW)
		2631	return 0;
		2632
2171	/* one element that is an RV? repeat! */	2633	/* one element that is an RV? repeat! */
2172	if (AvFILLp (state) == 0 && SvROK (AvARRAY (state)[0]))	2634	if (AvFILLp (state) == 0 && SvROK (AvARRAY (state)[0]))
2173	return 1;	2635	return 1;
2174		2636
2175	/* restore status */	2637	/* restore status */
…		…
2270	XSRETURN_EMPTY;	2732	XSRETURN_EMPTY;
2271	}	2733	}
2272		2734
2273	/*****************************************************************************/	2735	/*****************************************************************************/
2274		2736
		2737	#if CORO_CLONE
		2738	# include "clone.c"
		2739	#endif
		2740
2275	MODULE = Coro::State PACKAGE = Coro::State PREFIX = api_	2741	MODULE = Coro::State PACKAGE = Coro::State PREFIX = api_
2276		2742
2277	PROTOTYPES: DISABLE	2743	PROTOTYPES: DISABLE
2278		2744
2279	BOOT:	2745	BOOT:
…		…
2283	coro_thx = PERL_GET_CONTEXT;	2749	coro_thx = PERL_GET_CONTEXT;
2284	# endif	2750	# endif
2285	#endif	2751	#endif
2286	BOOT_PAGESIZE;	2752	BOOT_PAGESIZE;
2287		2753
		2754	cctx_current = cctx_new_empty ();
		2755
2288	irsgv = gv_fetchpv ("/" , GV_ADD|GV_NOTQUAL, SVt_PV);	2756	irsgv = gv_fetchpv ("/" , GV_ADD|GV_NOTQUAL, SVt_PV);
2289	stdoutgv = gv_fetchpv ("STDOUT", GV_ADD|GV_NOTQUAL, SVt_PVIO);	2757	stdoutgv = gv_fetchpv ("STDOUT", GV_ADD|GV_NOTQUAL, SVt_PVIO);
2290		2758
2291	orig_sigelem_get = PL_vtbl_sigelem.svt_get; PL_vtbl_sigelem.svt_get = coro_sigelem_get;	2759	orig_sigelem_get = PL_vtbl_sigelem.svt_get; PL_vtbl_sigelem.svt_get = coro_sigelem_get;
2292	orig_sigelem_set = PL_vtbl_sigelem.svt_set; PL_vtbl_sigelem.svt_set = coro_sigelem_set;	2760	orig_sigelem_set = PL_vtbl_sigelem.svt_set; PL_vtbl_sigelem.svt_set = coro_sigelem_set;
…		…
2311		2779
2312	{	2780	{
2313	SV *slf = sv_2mortal (newSViv (PTR2IV (pp_slf)));	2781	SV *slf = sv_2mortal (newSViv (PTR2IV (pp_slf)));
2314		2782
2315	if (!PL_custom_op_names) PL_custom_op_names = newHV ();	2783	if (!PL_custom_op_names) PL_custom_op_names = newHV ();
2316	hv_store_ent (PL_custom_op_names, slf,	2784	hv_store_ent (PL_custom_op_names, slf, newSVpv ("coro_slf", 0), 0);
2317	newSVpv ("coro_slf", 0), 0);
2318		2785
2319	if (!PL_custom_op_descs) PL_custom_op_descs = newHV ();	2786	if (!PL_custom_op_descs) PL_custom_op_descs = newHV ();
2320	hv_store_ent (PL_custom_op_descs, slf,	2787	hv_store_ent (PL_custom_op_descs, slf, newSVpv ("coro schedule like function", 0), 0);
2321	newSVpv ("coro schedule like function", 0), 0);
2322	}	2788	}
2323		2789
2324	coroapi.ver = CORO_API_VERSION;	2790	coroapi.ver = CORO_API_VERSION;
2325	coroapi.rev = CORO_API_REVISION;	2791	coroapi.rev = CORO_API_REVISION;
2326		2792
…		…
2345	assert (("PRIO_NORMAL must be 0", !PRIO_NORMAL));	2811	assert (("PRIO_NORMAL must be 0", !PRIO_NORMAL));
2346	}	2812	}
2347		2813
2348	SV *	2814	SV *
2349	new (char *klass, ...)	2815	new (char *klass, ...)
		2816	ALIAS:
		2817	Coro::new = 1
2350	CODE:	2818	CODE:
2351	{	2819	{
2352	struct coro *coro;	2820	struct coro *coro;
2353	MAGIC *mg;	2821	MAGIC *mg;
2354	HV *hv;	2822	HV *hv;
		2823	CV *cb;
2355	int i;	2824	int i;
		2825
		2826	if (items > 1)
		2827	{
		2828	cb = coro_sv_2cv (aTHX_ ST (1));
		2829
		2830	if (!ix)
		2831	{
		2832	if (CvISXSUB (cb))
		2833	croak ("Coro::State doesn't support XS functions as coroutine start, caught");
		2834
		2835	if (!CvROOT (cb))
		2836	croak ("Coro::State doesn't support autoloaded or undefined functions as coroutine start, caught");
		2837	}
		2838	}
2356		2839
2357	Newz (0, coro, 1, struct coro);	2840	Newz (0, coro, 1, struct coro);
2358	coro->args = newAV ();	2841	coro->args = newAV ();
2359	coro->flags = CF_NEW;	2842	coro->flags = CF_NEW;
2360		2843
…		…
2365	coro->hv = hv = newHV ();	2848	coro->hv = hv = newHV ();
2366	mg = sv_magicext ((SV *)hv, 0, CORO_MAGIC_type_state, &coro_state_vtbl, (char *)coro, 0);	2849	mg = sv_magicext ((SV *)hv, 0, CORO_MAGIC_type_state, &coro_state_vtbl, (char *)coro, 0);
2367	mg->mg_flags |= MGf_DUP;	2850	mg->mg_flags |= MGf_DUP;
2368	RETVAL = sv_bless (newRV_noinc ((SV *)hv), gv_stashpv (klass, 1));	2851	RETVAL = sv_bless (newRV_noinc ((SV *)hv), gv_stashpv (klass, 1));
2369		2852
		2853	if (items > 1)
		2854	{
2370	av_extend (coro->args, items - 1);	2855	av_extend (coro->args, items - 1 + ix - 1);
		2856
		2857	if (ix)
		2858	{
		2859	av_push (coro->args, SvREFCNT_inc_NN ((SV *)cb));
		2860	cb = cv_coro_run;
		2861	}
		2862
		2863	coro->startcv = (CV *)SvREFCNT_inc_NN ((SV *)cb);
		2864
2371	for (i = 1; i < items; i++)	2865	for (i = 2; i < items; i++)
2372	av_push (coro->args, newSVsv (ST (i)));	2866	av_push (coro->args, newSVsv (ST (i)));
		2867	}
2373	}	2868	}
2374	OUTPUT:	2869	OUTPUT:
2375	RETVAL	2870	RETVAL
2376		2871
2377	void	2872	void
…		…
2390	void	2885	void
2391	_exit (int code)	2886	_exit (int code)
2392	PROTOTYPE: $	2887	PROTOTYPE: $
2393	CODE:	2888	CODE:
2394	_exit (code);	2889	_exit (code);
		2890
		2891	SV *
		2892	clone (Coro::State coro)
		2893	CODE:
		2894	{
		2895	#if CORO_CLONE
		2896	struct coro *ncoro = coro_clone (coro);
		2897	MAGIC *mg;
		2898	/* TODO: too much duplication */
		2899	ncoro->hv = newHV ();
		2900	mg = sv_magicext ((SV *)ncoro->hv, 0, CORO_MAGIC_type_state, &coro_state_vtbl, (char *)ncoro, 0);
		2901	mg->mg_flags |= MGf_DUP;
		2902	RETVAL = sv_bless (newRV_noinc ((SV *)ncoro->hv), SvSTASH (coro->hv));
		2903	#else
		2904	croak ("Coro::State->clone has not been configured into this installation of Coro, realised");
		2905	#endif
		2906	}
		2907	OUTPUT:
		2908	RETVAL
2395		2909
2396	int	2910	int
2397	cctx_stacksize (int new_stacksize = 0)	2911	cctx_stacksize (int new_stacksize = 0)
2398	PROTOTYPE: ;$	2912	PROTOTYPE: ;$
2399	CODE:	2913	CODE:
…		…
2506	throw (Coro::State self, SV *throw = &PL_sv_undef)	3020	throw (Coro::State self, SV *throw = &PL_sv_undef)
2507	PROTOTYPE: $;$	3021	PROTOTYPE: $;$
2508	CODE:	3022	CODE:
2509	{	3023	{
2510	struct coro *current = SvSTATE_current;	3024	struct coro *current = SvSTATE_current;
2511	SV **throwp = self == current ? &coro_throw : &self->throw;	3025	SV **throwp = self == current ? &CORO_THROW : &self->except;
2512	SvREFCNT_dec (*throwp);	3026	SvREFCNT_dec (*throwp);
2513	*throwp = SvOK (throw) ? newSVsv (throw) : 0;	3027	*throwp = SvOK (throw) ? newSVsv (throw) : 0;
2514	}	3028	}
2515		3029
2516	void	3030	void
…		…
2520		3034
2521	SV *	3035	SV *
2522	has_cctx (Coro::State coro)	3036	has_cctx (Coro::State coro)
2523	PROTOTYPE: $	3037	PROTOTYPE: $
2524	CODE:	3038	CODE:
2525	RETVAL = boolSV (!!coro->cctx);	3039	/* maybe manage the running flag differently */
		3040	RETVAL = boolSV (!!coro->cctx || (coro->flags & CF_RUNNING));
2526	OUTPUT:	3041	OUTPUT:
2527	RETVAL	3042	RETVAL
2528		3043
2529	int	3044	int
2530	is_traced (Coro::State coro)	3045	is_traced (Coro::State coro)
…		…
2550		3065
2551	void	3066	void
2552	force_cctx ()	3067	force_cctx ()
2553	PROTOTYPE:	3068	PROTOTYPE:
2554	CODE:	3069	CODE:
2555	SvSTATE_current->cctx->idle_sp = 0;	3070	cctx_current->idle_sp = 0;
2556		3071
2557	void	3072	void
2558	swap_defsv (Coro::State self)	3073	swap_defsv (Coro::State self)
2559	PROTOTYPE: $	3074	PROTOTYPE: $
2560	ALIAS:	3075	ALIAS:
…		…
2575		3090
2576	BOOT:	3091	BOOT:
2577	{	3092	{
2578	int i;	3093	int i;
2579		3094
2580	av_async_pool = coro_get_av (aTHX_ "Coro::async_pool", TRUE);
2581	sv_pool_rss = coro_get_sv (aTHX_ "Coro::POOL_RSS" , TRUE);	3095	sv_pool_rss = coro_get_sv (aTHX_ "Coro::POOL_RSS" , TRUE);
2582	sv_pool_size = coro_get_sv (aTHX_ "Coro::POOL_SIZE" , TRUE);	3096	sv_pool_size = coro_get_sv (aTHX_ "Coro::POOL_SIZE" , TRUE);
2583		3097	cv_coro_run = get_cv ( "Coro::_terminate", GV_ADD);
		3098	cv_coro_terminate = get_cv ( "Coro::terminate" , GV_ADD);
2584	coro_current = coro_get_sv (aTHX_ "Coro::current", FALSE);	3099	coro_current = coro_get_sv (aTHX_ "Coro::current" , FALSE); SvREADONLY_on (coro_current);
2585	SvREADONLY_on (coro_current);	3100	av_async_pool = coro_get_av (aTHX_ "Coro::async_pool", TRUE);
		3101	av_destroy = coro_get_av (aTHX_ "Coro::destroy" , TRUE);
		3102	sv_manager = coro_get_sv (aTHX_ "Coro::manager" , TRUE);
		3103
		3104	sv_async_pool_idle = newSVpv ("[async pool idle]", 0); SvREADONLY_on (sv_async_pool_idle);
		3105	sv_Coro = newSVpv ("Coro", 0); SvREADONLY_on (sv_Coro);
		3106	cv_pool_handler = get_cv ("Coro::pool_handler", GV_ADD); SvREADONLY_on (cv_pool_handler);
		3107	cv_coro_state_new = get_cv ("Coro::State::new", 0); SvREADONLY_on (cv_coro_state_new);
2586		3108
2587	coro_stash = gv_stashpv ("Coro", TRUE);	3109	coro_stash = gv_stashpv ("Coro", TRUE);
2588		3110
2589	newCONSTSUB (coro_stash, "PRIO_MAX", newSViv (PRIO_MAX));	3111	newCONSTSUB (coro_stash, "PRIO_MAX", newSViv (PRIO_MAX));
2590	newCONSTSUB (coro_stash, "PRIO_HIGH", newSViv (PRIO_HIGH));	3112	newCONSTSUB (coro_stash, "PRIO_HIGH", newSViv (PRIO_HIGH));
…		…
2598		3120
2599	{	3121	{
2600	SV *sv = coro_get_sv (aTHX_ "Coro::API", TRUE);	3122	SV *sv = coro_get_sv (aTHX_ "Coro::API", TRUE);
2601		3123
2602	coroapi.schedule = api_schedule;	3124	coroapi.schedule = api_schedule;
		3125	coroapi.schedule_to = api_schedule_to;
2603	coroapi.cede = api_cede;	3126	coroapi.cede = api_cede;
2604	coroapi.cede_notself = api_cede_notself;	3127	coroapi.cede_notself = api_cede_notself;
2605	coroapi.ready = api_ready;	3128	coroapi.ready = api_ready;
2606	coroapi.is_ready = api_is_ready;	3129	coroapi.is_ready = api_is_ready;
2607	coroapi.nready = coro_nready;	3130	coroapi.nready = coro_nready;
2608	coroapi.current = coro_current;	3131	coroapi.current = coro_current;
2609		3132
2610	GCoroAPI = &coroapi;	3133	/*GCoroAPI = &coroapi;*/
2611	sv_setiv (sv, (IV)&coroapi);	3134	sv_setiv (sv, (IV)&coroapi);
2612	SvREADONLY_on (sv);	3135	SvREADONLY_on (sv);
2613	}	3136	}
2614	}	3137	}
		3138
		3139	void
		3140	terminate (...)
		3141	CODE:
		3142	CORO_EXECUTE_SLF_XS (slf_init_terminate);
2615		3143
2616	void	3144	void
2617	schedule (...)	3145	schedule (...)
2618	CODE:	3146	CODE:
2619	CORO_EXECUTE_SLF_XS (slf_init_schedule);	3147	CORO_EXECUTE_SLF_XS (slf_init_schedule);
2620		3148
2621	void	3149	void
		3150	schedule_to (...)
		3151	CODE:
		3152	CORO_EXECUTE_SLF_XS (slf_init_schedule_to);
		3153
		3154	void
		3155	cede_to (...)
		3156	CODE:
		3157	CORO_EXECUTE_SLF_XS (slf_init_cede_to);
		3158
		3159	void
2622	cede (...)	3160	cede (...)
2623	CODE:	3161	CODE:
2624	CORO_EXECUTE_SLF_XS (slf_init_cede);	3162	CORO_EXECUTE_SLF_XS (slf_init_cede);
2625		3163
2626	void	3164	void
2627	cede_notself (...)	3165	cede_notself (...)
2628	CODE:	3166	CODE:
2629	CORO_EXECUTE_SLF_XS (slf_init_cede_notself);	3167	CORO_EXECUTE_SLF_XS (slf_init_cede_notself);
		3168
		3169	void
		3170	_cancel (Coro::State self)
		3171	CODE:
		3172	coro_state_destroy (aTHX_ self);
		3173	coro_call_on_destroy (aTHX_ self);
2630		3174
2631	void	3175	void
2632	_set_current (SV *current)	3176	_set_current (SV *current)
2633	PROTOTYPE: $	3177	PROTOTYPE: $
2634	CODE:	3178	CODE:
…		…
2679	CODE:	3223	CODE:
2680	RETVAL = coro_nready;	3224	RETVAL = coro_nready;
2681	OUTPUT:	3225	OUTPUT:
2682	RETVAL	3226	RETVAL
2683		3227
2684	# for async_pool speedup
2685	void	3228	void
2686	_pool_1 (SV *cb)	3229	_pool_handler (...)
2687	CODE:	3230	CODE:
2688	{	3231	CORO_EXECUTE_SLF_XS (slf_init_pool_handler);
2689	HV *hv = (HV *)SvRV (coro_current);
2690	struct coro *coro = SvSTATE_hv ((SV *)hv);
2691	AV *defav = GvAV (PL_defgv);
2692	SV *invoke = hv_delete (hv, "_invoke", sizeof ("_invoke") - 1, 0);
2693	AV *invoke_av;
2694	int i, len;
2695		3232
2696	if (!invoke)	3233	void
		3234	async_pool (SV *cv, ...)
		3235	PROTOTYPE: &@
		3236	PPCODE:
		3237	{
		3238	HV *hv = (HV *)av_pop (av_async_pool);
		3239	AV *av = newAV ();
		3240	SV *cb = ST (0);
		3241	int i;
		3242
		3243	av_extend (av, items - 2);
		3244	for (i = 1; i < items; ++i)
		3245	av_push (av, SvREFCNT_inc_NN (ST (i)));
		3246
		3247	if ((SV *)hv == &PL_sv_undef)
2697	{	3248	{
2698	SV *old = PL_diehook;	3249	PUSHMARK (SP);
2699	PL_diehook = 0;	3250	EXTEND (SP, 2);
2700	SvREFCNT_dec (old);	3251	PUSHs (sv_Coro);
2701	croak ("\3async_pool terminate\2\n");	3252	PUSHs ((SV *)cv_pool_handler);
		3253	PUTBACK;
		3254	call_sv ((SV *)cv_coro_state_new, G_SCALAR);
		3255	SPAGAIN;
		3256
		3257	hv = (HV *)SvREFCNT_inc_NN (SvRV (POPs));
2702	}	3258	}
2703		3259
2704	SvREFCNT_dec (coro->saved_deffh);
2705	coro->saved_deffh = SvREFCNT_inc_NN ((SV *)PL_defoutgv);
2706
2707	hv_store (hv, "desc", sizeof ("desc") - 1,
2708	newSVpvn ("[async_pool]", sizeof ("[async_pool]") - 1), 0);
2709
2710	invoke_av = (AV *)SvRV (invoke);
2711	len = av_len (invoke_av);
2712
2713	sv_setsv (cb, AvARRAY (invoke_av)[0]);
2714
2715	if (len > 0)
2716	{	3260	{
2717	av_fill (defav, len - 1);	3261	struct coro *coro = SvSTATE_hv (hv);
2718	for (i = 0; i < len; ++i)	3262
2719	av_store (defav, i, SvREFCNT_inc_NN (AvARRAY (invoke_av)[i + 1]));	3263	assert (!coro->invoke_cb);
		3264	assert (!coro->invoke_av);
		3265	coro->invoke_cb = SvREFCNT_inc (cb);
		3266	coro->invoke_av = av;
2720	}	3267	}
		3268
		3269	api_ready (aTHX_ (SV *)hv);
		3270
		3271	if (GIMME_V != G_VOID)
		3272	XPUSHs (sv_2mortal (newRV_noinc ((SV *)hv)));
		3273	else
		3274	SvREFCNT_dec (hv);
2721	}	3275	}
		3276
		3277	SV *
		3278	rouse_cb ()
		3279	PROTOTYPE:
		3280	CODE:
		3281	RETVAL = coro_new_rouse_cb (aTHX);
		3282	OUTPUT:
		3283	RETVAL
2722		3284
2723	void	3285	void
2724	_pool_2 (SV *cb)	3286	rouse_wait (...)
		3287	PROTOTYPE: ;$
2725	CODE:	3288	PPCODE:
2726	{	3289	CORO_EXECUTE_SLF_XS (slf_init_rouse_wait);
2727	HV *hv = (HV *)SvRV (coro_current);
2728	struct coro *coro = SvSTATE_hv ((SV *)hv);
2729
2730	sv_setsv (cb, &PL_sv_undef);
2731
2732	SvREFCNT_dec ((SV *)PL_defoutgv); PL_defoutgv = (GV *)coro->saved_deffh;
2733	coro->saved_deffh = 0;
2734
2735	if (coro_rss (aTHX_ coro) > SvUV (sv_pool_rss)
2736	|| av_len (av_async_pool) + 1 >= SvIV (sv_pool_size))
2737	{
2738	SV *old = PL_diehook;
2739	PL_diehook = 0;
2740	SvREFCNT_dec (old);
2741	croak ("\3async_pool terminate\2\n");
2742	}
2743
2744	av_clear (GvAV (PL_defgv));
2745	hv_store (hv, "desc", sizeof ("desc") - 1,
2746	newSVpvn ("[async_pool idle]", sizeof ("[async_pool idle]") - 1), 0);
2747
2748	coro->prio = 0;
2749
2750	if (coro->cctx && (coro->cctx->flags & CC_TRACE))
2751	api_trace (aTHX_ coro_current, 0);
2752
2753	av_push (av_async_pool, newSVsv (coro_current));
2754	}
2755		3290
2756		3291
2757	MODULE = Coro::State PACKAGE = PerlIO::cede	3292	MODULE = Coro::State PACKAGE = PerlIO::cede
2758		3293
2759	BOOT:	3294	BOOT:
…		…
2761		3296
2762		3297
2763	MODULE = Coro::State PACKAGE = Coro::Semaphore	3298	MODULE = Coro::State PACKAGE = Coro::Semaphore
2764		3299
2765	SV *	3300	SV *
2766	new (SV *klass, SV *count_ = 0)	3301	new (SV *klass, SV *count = 0)
2767	CODE:	3302	CODE:
2768	{	3303	RETVAL = sv_bless (
2769	/* a semaphore contains a counter IV in $sem->[0] and any waiters after that */	3304	coro_waitarray_new (aTHX_ count && SvOK (count) ? SvIV (count) : 1),
2770	AV *av = newAV ();	3305	GvSTASH (CvGV (cv))
2771	SV **ary;	3306	);
		3307	OUTPUT:
		3308	RETVAL
2772		3309
2773	/* unfortunately, building manually saves memory */	3310	# helper for Coro::Channel
2774	Newx (ary, 2, SV *);	3311	SV *
2775	AvALLOC (av) = ary;	3312	_alloc (int count)
2776	AvARRAY (av) = ary;	3313	CODE:
2777	AvMAX (av) = 1;	3314	RETVAL = coro_waitarray_new (aTHX_ count);
2778	AvFILLp (av) = 0;
2779	ary [0] = newSViv (count_ && SvOK (count_) ? SvIV (count_) : 1);
2780
2781	RETVAL = sv_bless (newRV_noinc ((SV *)av), GvSTASH (CvGV (cv)));
2782	}
2783	OUTPUT:	3315	OUTPUT:
2784	RETVAL	3316	RETVAL
2785		3317
2786	SV *	3318	SV *
2787	count (SV *self)	3319	count (SV *self)
…		…
2796	adjust = 1	3328	adjust = 1
2797	CODE:	3329	CODE:
2798	coro_semaphore_adjust (aTHX_ (AV *)SvRV (self), ix ? adjust : 1);	3330	coro_semaphore_adjust (aTHX_ (AV *)SvRV (self), ix ? adjust : 1);
2799		3331
2800	void	3332	void
2801	down (SV *self)	3333	down (...)
2802	CODE:	3334	CODE:
2803	CORO_EXECUTE_SLF_XS (slf_init_semaphore_down);	3335	CORO_EXECUTE_SLF_XS (slf_init_semaphore_down);
		3336
		3337	void
		3338	wait (...)
		3339	CODE:
		3340	CORO_EXECUTE_SLF_XS (slf_init_semaphore_wait);
2804		3341
2805	void	3342	void
2806	try (SV *self)	3343	try (SV *self)
2807	PPCODE:	3344	PPCODE:
2808	{	3345	{
…		…
2820	XSRETURN_NO;	3357	XSRETURN_NO;
2821	}	3358	}
2822		3359
2823	void	3360	void
2824	waiters (SV *self)	3361	waiters (SV *self)
2825	CODE:	3362	PPCODE:
2826	{	3363	{
2827	AV *av = (AV *)SvRV (self);	3364	AV *av = (AV *)SvRV (self);
		3365	int wcount = AvFILLp (av) + 1 - 1;
2828		3366
2829	if (GIMME_V == G_SCALAR)	3367	if (GIMME_V == G_SCALAR)
2830	XPUSHs (sv_2mortal (newSVsv (AvARRAY (av)[0])));	3368	XPUSHs (sv_2mortal (newSViv (wcount)));
2831	else	3369	else
2832	{	3370	{
2833	int i;	3371	int i;
2834	EXTEND (SP, AvFILLp (av) + 1 - 1);	3372	EXTEND (SP, wcount);
2835	for (i = 1; i <= AvFILLp (av); ++i)	3373	for (i = 1; i <= wcount; ++i)
2836	PUSHs (sv_2mortal (newRV_inc (AvARRAY (av)[i])));	3374	PUSHs (sv_2mortal (newRV_inc (AvARRAY (av)[i])));
2837	}	3375	}
2838	}	3376	}
		3377
		3378	MODULE = Coro::State PACKAGE = Coro::Signal
		3379
		3380	SV *
		3381	new (SV *klass)
		3382	CODE:
		3383	RETVAL = sv_bless (
		3384	coro_waitarray_new (aTHX_ 0),
		3385	GvSTASH (CvGV (cv))
		3386	);
		3387	OUTPUT:
		3388	RETVAL
		3389
		3390	void
		3391	wait (...)
		3392	CODE:
		3393	CORO_EXECUTE_SLF_XS (slf_init_signal_wait);
		3394
		3395	void
		3396	broadcast (SV *self)
		3397	CODE:
		3398	{
		3399	AV *av = (AV *)SvRV (self);
		3400	coro_signal_wake (aTHX_ av, AvFILLp (av));
		3401	}
		3402
		3403	void
		3404	send (SV *self)
		3405	CODE:
		3406	{
		3407	AV *av = (AV *)SvRV (self);
		3408
		3409	if (AvFILLp (av))
		3410	coro_signal_wake (aTHX_ av, 1);
		3411	else
		3412	SvIVX (AvARRAY (av)[0]) = 1; /* remember the signal */
		3413	}
		3414
		3415	IV
		3416	awaited (SV *self)
		3417	CODE:
		3418	RETVAL = AvFILLp ((AV *)SvRV (self)) + 1 - 1;
		3419	OUTPUT:
		3420	RETVAL
2839		3421
2840		3422
2841	MODULE = Coro::State PACKAGE = Coro::AnyEvent	3423	MODULE = Coro::State PACKAGE = Coro::AnyEvent
2842		3424
2843	BOOT:	3425	BOOT:
…		…
2871		3453
2872	void	3454	void
2873	_register (char *target, char *proto, SV *req)	3455	_register (char *target, char *proto, SV *req)
2874	CODE:	3456	CODE:
2875	{	3457	{
2876	HV *st;	3458	CV *req_cv = coro_sv_2cv (aTHX_ req);
2877	GV *gvp;
2878	CV *req_cv = sv_2cv (req, &st, &gvp, 0);
2879	/* newXSproto doesn't return the CV on 5.8 */	3459	/* newXSproto doesn't return the CV on 5.8 */
2880	CV *slf_cv = newXS (target, coro_aio_req_xs, __FILE__);	3460	CV *slf_cv = newXS (target, coro_aio_req_xs, __FILE__);
2881	sv_setpv ((SV *)slf_cv, proto);	3461	sv_setpv ((SV *)slf_cv, proto);
2882	sv_magicext ((SV *)slf_cv, (SV *)req_cv, CORO_MAGIC_type_aio, 0, 0, 0);	3462	sv_magicext ((SV *)slf_cv, (SV *)req_cv, CORO_MAGIC_type_aio, 0, 0, 0);
2883	}	3463	}

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