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

Comparing Coro/Coro/State.xs (file contents):
Revision 1.283 by root, Sun Nov 16 11:12:57 2008 UTC vs.
Revision 1.295 by root, Tue Nov 18 10:35:01 2008 UTC

…		…
95	# define GV_NOTQUAL 0	95	# define GV_NOTQUAL 0
96	#endif	96	#endif
97	#ifndef newSV	97	#ifndef newSV
98	# define newSV(l) NEWSV(0,l)	98	# define newSV(l) NEWSV(0,l)
99	#endif	99	#endif
		100	#ifndef CvISXSUB_on
		101	# define CvISXSUB_on(cv) (void)cv
		102	#endif
100		103
101	/* 5.8.7 */	104	/* 5.8.7 */
102	#ifndef SvRV_set	105	#ifndef SvRV_set
103	# define SvRV_set(s,v) SvRV(s) = (v)	106	# define SvRV_set(s,v) SvRV(s) = (v)
104	#endif	107	#endif
…		…
117	#endif	120	#endif
118		121
119	/* The next macros try to return the current stack pointer, in an as	122	/* The next macros try to return the current stack pointer, in an as
120	* portable way as possible. */	123	* portable way as possible. */
121	#if __GNUC__ >= 4	124	#if __GNUC__ >= 4
		125	# define dSTACKLEVEL int stacklevel_dummy
122	# define dSTACKLEVEL void *stacklevel = __builtin_frame_address (0)	126	# define STACKLEVEL __builtin_frame_address (0)
123	#else	127	#else
124	# define dSTACKLEVEL volatile void stacklevel = (volatile void )&stacklevel	128	# define dSTACKLEVEL volatile void *stacklevel
		129	# define STACKLEVEL ((void *)&stacklevel)
125	#endif	130	#endif
126		131
127	#define IN_DESTRUCT (PL_main_cv == Nullcv)	132	#define IN_DESTRUCT (PL_main_cv == Nullcv)
128		133
129	#if __GNUC__ >= 3	134	#if __GNUC__ >= 3
…		…
147	# if CORO_PTHREAD	152	# if CORO_PTHREAD
148	static void *coro_thx;	153	static void *coro_thx;
149	# endif	154	# endif
150	#endif	155	#endif
151		156
152	/* helper storage struct for Coro::AIO */
153	struct io_state
154	{
155	AV *res;
156	int errorno;
157	I32 laststype; /* U16 in 5.10.0 */
158	int laststatval;
159	Stat_t statcache;
160	};
161
162	static double (nvtime)(); / so why doesn't it take void? */	157	static double (nvtime)(); / so why doesn't it take void? */
		158
		159	/* we hijack an hopefully unused CV flag for our purposes */
		160	#define CVf_SLF 0x4000
		161	static OP *pp_slf (pTHX);
163		162
164	static U32 cctx_gen;	163	static U32 cctx_gen;
165	static size_t cctx_stacksize = CORO_STACKSIZE;	164	static size_t cctx_stacksize = CORO_STACKSIZE;
166	static struct CoroAPI coroapi;	165	static struct CoroAPI coroapi;
167	static AV main_mainstack; / used to differentiate between $main and others */	166	static AV main_mainstack; / used to differentiate between $main and others */
…		…
241	/* this is a structure representing a perl-level coroutine */	240	/* this is a structure representing a perl-level coroutine */
242	struct coro {	241	struct coro {
243	/* the C coroutine allocated to this perl coroutine, if any */	242	/* the C coroutine allocated to this perl coroutine, if any */
244	coro_cctx *cctx;	243	coro_cctx *cctx;
245		244
246	/* process data */	245	/* state data */
247	struct CoroSLF slf_frame; /* saved slf frame */	246	struct CoroSLF slf_frame; /* saved slf frame */
248	AV *mainstack;	247	AV *mainstack;
249	perl_slots slot; / basically the saved sp */	248	perl_slots slot; / basically the saved sp */
250		249
251	AV args; / data associated with this coroutine (initial args) */	250	AV args; / data associated with this coroutine (initial args) */
…		…
269	};	268	};
270		269
271	typedef struct coro *Coro__State;	270	typedef struct coro *Coro__State;
272	typedef struct coro *Coro__State_or_hashref;	271	typedef struct coro *Coro__State_or_hashref;
273		272
		273	/* the following variables are effectively part of the perl context */
		274	/* and get copied between struct coro and these variables */
		275	/* the mainr easonw e don't support windows process emulation */
274	static struct CoroSLF slf_frame; /* the current slf frame */	276	static struct CoroSLF slf_frame; /* the current slf frame */
		277	static SV *coro_throw;
275		278
276	/ Coro ******************************************************************/	279	/ Coro ******************************************************************/
277		280
278	#define PRIO_MAX 3	281	#define PRIO_MAX 3
279	#define PRIO_HIGH 1	282	#define PRIO_HIGH 1
…		…
380	SvREFCNT_dec (av); /* sv_magicext increased the refcount */	383	SvREFCNT_dec (av); /* sv_magicext increased the refcount */
381		384
382	return 0;	385	return 0;
383	}	386	}
384		387
385	#define CORO_MAGIC_type_cv PERL_MAGIC_ext	388	#define CORO_MAGIC_type_cv 26
386	#define CORO_MAGIC_type_state PERL_MAGIC_ext	389	#define CORO_MAGIC_type_state PERL_MAGIC_ext
387		390
388	static MGVTBL coro_cv_vtbl = {	391	static MGVTBL coro_cv_vtbl = {
389	0, 0, 0, 0,	392	0, 0, 0, 0,
390	coro_cv_free	393	coro_cv_free
391	};	394	};
392		395
		396	#define CORO_MAGIC_NN(sv, type) \
		397	(expect_true (SvMAGIC (sv)->mg_type == type) \
		398	? SvMAGIC (sv) \
		399	: mg_find (sv, type))
		400
393	#define CORO_MAGIC(sv, type) \	401	#define CORO_MAGIC(sv, type) \
394	expect_true (SvMAGIC (sv)) \	402	(expect_true (SvMAGIC (sv)) \
395	? expect_true (SvMAGIC (sv)->mg_type == type) \	403	? CORO_MAGIC_NN (sv, type) \
396	? SvMAGIC (sv) \
397	: mg_find (sv, type) \
398	: 0	404	: 0)
399		405
400	#define CORO_MAGIC_cv(cv) CORO_MAGIC (((SV *)(cv)), CORO_MAGIC_type_cv)	406	#define CORO_MAGIC_cv(cv) CORO_MAGIC (((SV *)(cv)), CORO_MAGIC_type_cv)
401	#define CORO_MAGIC_state(sv) CORO_MAGIC (((SV *)(sv)), CORO_MAGIC_type_state)	407	#define CORO_MAGIC_state(sv) CORO_MAGIC_NN (((SV *)(sv)), CORO_MAGIC_type_state)
402		408
403	INLINE struct coro *	409	INLINE struct coro *
404	SvSTATE_ (pTHX_ SV *coro)	410	SvSTATE_ (pTHX_ SV *coro)
405	{	411	{
406	HV *stash;	412	HV *stash;
…		…
424	return (struct coro *)mg->mg_ptr;	430	return (struct coro *)mg->mg_ptr;
425	}	431	}
426		432
427	#define SvSTATE(sv) SvSTATE_ (aTHX_ (sv))	433	#define SvSTATE(sv) SvSTATE_ (aTHX_ (sv))
428		434
429	/* fastert than SvSTATE, but expects a coroutine hv */	435	/* faster than SvSTATE, but expects a coroutine hv */
430	INLINE struct coro *	436	#define SvSTATE_hv(hv) ((struct coro )CORO_MAGIC_NN ((SV )hv, CORO_MAGIC_type_state)->mg_ptr)
431	SvSTATE_hv (SV *sv)
432	{
433	MAGIC *mg = expect_true (SvMAGIC (sv)->mg_type == CORO_MAGIC_type_state)
434	? SvMAGIC (sv)
435	: mg_find (sv, CORO_MAGIC_type_state);
436
437	return (struct coro *)mg->mg_ptr;
438	}
439
440	#define SvSTATE_current SvSTATE_hv (SvRV (coro_current))	437	#define SvSTATE_current SvSTATE_hv (SvRV (coro_current))
441		438
442	/* the next two functions merely cache the padlists */	439	/* the next two functions merely cache the padlists */
443	static void	440	static void
444	get_padlist (pTHX_ CV *cv)	441	get_padlist (pTHX_ CV *cv)
…		…
513	}	510	}
514		511
515	PUTBACK;	512	PUTBACK;
516	}	513	}
517		514
518	slf_frame = c->slf_frame;	515	slf_frame = c->slf_frame;
		516	coro_throw = c->throw;
519	}	517	}
520		518
521	static void	519	static void
522	save_perl (pTHX_ Coro__State c)	520	save_perl (pTHX_ Coro__State c)
523	{	521	{
		522	c->throw = coro_throw;
524	c->slf_frame = slf_frame;	523	c->slf_frame = slf_frame;
525		524
526	{	525	{
527	dSP;	526	dSP;
528	I32 cxix = cxstack_ix;	527	I32 cxix = cxstack_ix;
…		…
821	slf_check_nop (pTHX_ struct CoroSLF *frame)	820	slf_check_nop (pTHX_ struct CoroSLF *frame)
822	{	821	{
823	return 0;	822	return 0;
824	}	823	}
825		824
826	static void	825	static UNOP coro_setup_op;
		826
		827	static void NOINLINE /* noinline to keep it out of the transfer fast path */
827	coro_setup (pTHX_ struct coro *coro)	828	coro_setup (pTHX_ struct coro *coro)
828	{	829	{
829	/*	830	/*
830	* emulate part of the perl startup here.	831	* emulate part of the perl startup here.
831	*/	832	*/
…		…
858	{	859	{
859	dSP;	860	dSP;
860	UNOP myop;	861	UNOP myop;
861		862
862	Zero (&myop, 1, UNOP);	863	Zero (&myop, 1, UNOP);
863	myop.op_next = Nullop;	864	myop.op_next = Nullop;
864	myop.op_flags = OPf_WANT_VOID;	865	myop.op_flags = OPf_WANT_VOID;
865		866
866	PUSHMARK (SP);	867	PUSHMARK (SP);
867	XPUSHs (sv_2mortal (av_shift (GvAV (PL_defgv))));	868	XPUSHs (sv_2mortal (av_shift (GvAV (PL_defgv))));
868	PUTBACK;	869	PUTBACK;
…		…
874	/* this newly created coroutine might be run on an existing cctx which most	875	/* this newly created coroutine might be run on an existing cctx which most
875	* likely was suspended in pp_slf, so we have to emulate entering pp_slf here.	876	* likely was suspended in pp_slf, so we have to emulate entering pp_slf here.
876	*/	877	*/
877	slf_frame.prepare = prepare_nop; /* provide a nop function for an eventual pp_slf */	878	slf_frame.prepare = prepare_nop; /* provide a nop function for an eventual pp_slf */
878	slf_frame.check = slf_check_nop; /* signal pp_slf to not repeat */	879	slf_frame.check = slf_check_nop; /* signal pp_slf to not repeat */
		880
		881	/* and we have to provide the pp_slf op in any case, so pp_slf can skip it */
		882	coro_setup_op.op_next = PL_op;
		883	coro_setup_op.op_type = OP_CUSTOM;
		884	coro_setup_op.op_ppaddr = pp_slf;
		885	/* no flags required, as an init function won't be called */
		886
		887	PL_op = (OP *)&coro_setup_op;
		888
		889	/* copy throw, in case it was set before coro_setup */
		890	coro_throw = coro->throw;
879	}	891	}
880		892
881	static void	893	static void
882	coro_destruct (pTHX_ struct coro *coro)	894	coro_destruct (pTHX_ struct coro *coro)
883	{	895	{
…		…
907		919
908	SvREFCNT_dec (PL_diehook);	920	SvREFCNT_dec (PL_diehook);
909	SvREFCNT_dec (PL_warnhook);	921	SvREFCNT_dec (PL_warnhook);
910		922
911	SvREFCNT_dec (coro->saved_deffh);	923	SvREFCNT_dec (coro->saved_deffh);
912	SvREFCNT_dec (coro->throw);	924	SvREFCNT_dec (coro_throw);
913		925
914	coro_destruct_stacks (aTHX);	926	coro_destruct_stacks (aTHX);
915	}	927	}
916		928
917	INLINE void	929	INLINE void
…		…
1046		1058
1047	TAINT_NOT;	1059	TAINT_NOT;
1048	return 0;	1060	return 0;
1049	}	1061	}
1050		1062
		1063	static struct coro_cctx *cctx_ssl_cctx;
		1064	static struct CoroSLF cctx_ssl_frame;
		1065
1051	static void	1066	static void
1052	prepare_set_stacklevel (struct coro_transfer_args ta, struct coro_cctx cctx)	1067	slf_prepare_set_stacklevel (pTHX_ struct coro_transfer_args *ta)
1053	{	1068	{
1054	ta->prev = (struct coro *)cctx;	1069	ta->prev = (struct coro *)cctx_ssl_cctx;
1055	ta->next = 0;	1070	ta->next = 0;
1056	}	1071	}
1057		1072
1058	/* inject a fake call to Coro::State::_cctx_init into the execution */	1073	static int
1059	/* _cctx_init should be careful, as it could be called at almost any time */	1074	slf_check_set_stacklevel (pTHX_ struct CoroSLF *frame)
1060	/* during execution of a perl program */	1075	{
1061	/* also initialises PL_top_env */	1076	*frame = cctx_ssl_frame;
		1077
		1078	return frame->check (aTHX_ frame); /* execute the restored frame - there must be one */
		1079	}
		1080
		1081	/* initialises PL_top_env and injects a pseudo-slf-call to set the stacklevel */
1062	static void NOINLINE	1082	static void NOINLINE
1063	cctx_prepare (pTHX_ coro_cctx *cctx)	1083	cctx_prepare (pTHX_ coro_cctx *cctx)
1064	{	1084	{
1065	dSP;
1066	UNOP myop;
1067
1068	PL_top_env = &PL_start_env;	1085	PL_top_env = &PL_start_env;
1069		1086
1070	if (cctx->flags & CC_TRACE)	1087	if (cctx->flags & CC_TRACE)
1071	PL_runops = runops_trace;	1088	PL_runops = runops_trace;
1072		1089
1073	Zero (&myop, 1, UNOP);	1090	/* we already must be executing an SLF op, there is no other valid way
1074	myop.op_next = PL_op;	1091	* that can lead to creation of a new cctx */
1075	myop.op_flags = OPf_WANT_VOID \| OPf_STACKED;	1092	assert (("FATAL: can't prepare slf-less cctx in Coro module (please report)",
		1093	slf_frame.prepare && PL_op->op_ppaddr == pp_slf));
1076		1094
1077	PUSHMARK (SP);	1095	/* we must emulate leaving pp_slf, which is done inside slf_check_set_stacklevel */
1078	EXTEND (SP, 2);	1096	cctx_ssl_cctx = cctx;
1079	PUSHs (sv_2mortal (newSViv ((IV)cctx)));	1097	cctx_ssl_frame = slf_frame;
1080	PUSHs ((SV *)get_cv ("Coro::State::_cctx_init", FALSE));	1098
1081	PUTBACK;	1099	slf_frame.prepare = slf_prepare_set_stacklevel;
1082	PL_op = (OP *)&myop;	1100	slf_frame.check = slf_check_set_stacklevel;
1083	PL_op = PL_ppaddr[OP_ENTERSUB](aTHX);
1084	SPAGAIN;
1085	}	1101	}
1086		1102
1087	/* the tail of transfer: execute stuff we can only do after a transfer */	1103	/* the tail of transfer: execute stuff we can only do after a transfer */
1088	INLINE void	1104	INLINE void
1089	transfer_tail (pTHX)	1105	transfer_tail (pTHX)
…		…
1276	/ coroutine switching ***************************************************/	1292	/ coroutine switching ***************************************************/
1277		1293
1278	static void	1294	static void
1279	transfer_check (pTHX_ struct coro prev, struct coro next)	1295	transfer_check (pTHX_ struct coro prev, struct coro next)
1280	{	1296	{
		1297	/* TODO: throwing up here is considered harmful */
		1298
1281	if (expect_true (prev != next))	1299	if (expect_true (prev != next))
1282	{	1300	{
1283	if (expect_false (!(prev->flags & (CF_RUNNING \| CF_NEW))))	1301	if (expect_false (!(prev->flags & (CF_RUNNING \| CF_NEW))))
1284	croak ("Coro::State::transfer called with non-running/new prev Coro::State, but can only transfer from running or new states,");	1302	croak ("Coro::State::transfer called with non-running/new prev Coro::State, but can only transfer from running or new states,");
1285		1303
…		…
1295	#endif	1313	#endif
1296	}	1314	}
1297	}	1315	}
1298		1316
1299	/* always use the TRANSFER macro */	1317	/* always use the TRANSFER macro */
1300	static void NOINLINE	1318	static void NOINLINE /* noinline so we have a fixed stackframe */
1301	transfer (pTHX_ struct coro prev, struct coro next, int force_cctx)	1319	transfer (pTHX_ struct coro prev, struct coro next, int force_cctx)
1302	{	1320	{
1303	dSTACKLEVEL;	1321	dSTACKLEVEL;
1304		1322
1305	/* sometimes transfer is only called to set idle_sp */	1323	/* sometimes transfer is only called to set idle_sp */
1306	if (expect_false (!next))	1324	if (expect_false (!next))
1307	{	1325	{
1308	((coro_cctx )prev)->idle_sp = (void )stacklevel;	1326	((coro_cctx *)prev)->idle_sp = STACKLEVEL;
1309	assert (((coro_cctx )prev)->idle_te = PL_top_env); / just for the side-effect when asserts are enabled */	1327	assert (((coro_cctx )prev)->idle_te = PL_top_env); / just for the side-effect when asserts are enabled */
1310	}	1328	}
1311	else if (expect_true (prev != next))	1329	else if (expect_true (prev != next))
1312	{	1330	{
1313	coro_cctx *prev__cctx;	1331	coro_cctx *prev__cctx;
…		…
1338		1356
1339	prev__cctx = prev->cctx;	1357	prev__cctx = prev->cctx;
1340		1358
1341	/* possibly untie and reuse the cctx */	1359	/* possibly untie and reuse the cctx */
1342	if (expect_true (	1360	if (expect_true (
1343	prev__cctx->idle_sp == (void *)stacklevel	1361	prev__cctx->idle_sp == STACKLEVEL
1344	&& !(prev__cctx->flags & CC_TRACE)	1362	&& !(prev__cctx->flags & CC_TRACE)
1345	&& !force_cctx	1363	&& !force_cctx
1346	))	1364	))
1347	{	1365	{
1348	/* I assume that stacklevel is a stronger indicator than PL_top_env changes */	1366	/* I assume that stacklevel is a stronger indicator than PL_top_env changes */
…		…
1531	ENTER;	1549	ENTER;
1532	SAVETMPS;	1550	SAVETMPS;
1533		1551
1534	PUSHMARK (SP);	1552	PUSHMARK (SP);
1535	PUTBACK;	1553	PUTBACK;
1536	call_sv (sv_hook, G_DISCARD);	1554	call_sv (sv_hook, G_VOID \| G_DISCARD);
1537	SPAGAIN;
1538		1555
1539	FREETMPS;	1556	FREETMPS;
1540	LEAVE;	1557	LEAVE;
1541	}	1558	}
1542		1559
…		…
1569	ENTER;	1586	ENTER;
1570	SAVETMPS;	1587	SAVETMPS;
1571		1588
1572	PUSHMARK (SP);	1589	PUSHMARK (SP);
1573	PUTBACK;	1590	PUTBACK;
1574	call_sv (get_sv ("Coro::idle", FALSE), G_DISCARD);	1591	call_sv (get_sv ("Coro::idle", FALSE), G_VOID \| G_DISCARD);
1575	SPAGAIN;
1576		1592
1577	FREETMPS;	1593	FREETMPS;
1578	LEAVE;	1594	LEAVE;
1579	continue;	1595	continue;
1580	}	1596	}
…		…
1687	if (coro->flags & CF_RUNNING)	1703	if (coro->flags & CF_RUNNING)
1688	PL_runops = RUNOPS_DEFAULT;	1704	PL_runops = RUNOPS_DEFAULT;
1689	else	1705	else
1690	coro->slot->runops = RUNOPS_DEFAULT;	1706	coro->slot->runops = RUNOPS_DEFAULT;
1691	}	1707	}
		1708	}
		1709
		1710	/*****************************************************************************/
		1711	/* schedule-like-function opcode (SLF) */
		1712
		1713	static UNOP slf_restore; /* restore stack as entersub did, for first-re-run */
		1714	static const CV *slf_cv;
		1715	static SV **slf_argv;
		1716	static int slf_argc, slf_arga; /* count, allocated */
		1717	static I32 slf_ax; /* top of stack, for restore */
		1718
		1719	/* this restores the stack in the case we patched the entersub, to */
		1720	/* recreate the stack frame as perl will on following calls */
		1721	/* since entersub cleared the stack */
		1722	static OP *
		1723	pp_restore (pTHX)
		1724	{
		1725	int i;
		1726	SV **SP = PL_stack_base + slf_ax;
		1727
		1728	PUSHMARK (SP);
		1729
		1730	EXTEND (SP, slf_argc + 1);
		1731
		1732	for (i = 0; i < slf_argc; ++i)
		1733	PUSHs (sv_2mortal (slf_argv [i]));
		1734
		1735	PUSHs ((SV *)CvGV (slf_cv));
		1736
		1737	RETURNOP (slf_restore.op_first);
		1738	}
		1739
		1740	static void
		1741	slf_prepare_transfer (pTHX_ struct coro_transfer_args *ta)
		1742	{
		1743	SV arg = (SV )slf_frame.data;
		1744
		1745	prepare_transfer (aTHX_ ta, arg [0], arg [1]);
		1746	}
		1747
		1748	static void
		1749	slf_init_transfer (pTHX_ struct CoroSLF frame, CV cv, SV **arg, int items)
		1750	{
		1751	if (items != 2)
		1752	croak ("Coro::State::transfer (prev, next) expects two arguments, not %d,", items);
		1753
		1754	frame->prepare = slf_prepare_transfer;
		1755	frame->check = slf_check_nop;
		1756	frame->data = (void )arg; / let's hope it will stay valid */
		1757	}
		1758
		1759	static void
		1760	slf_init_schedule (pTHX_ struct CoroSLF frame, CV cv, SV **arg, int items)
		1761	{
		1762	frame->prepare = prepare_schedule;
		1763	frame->check = slf_check_nop;
		1764	}
		1765
		1766	static void
		1767	slf_init_cede (pTHX_ struct CoroSLF frame, CV cv, SV **arg, int items)
		1768	{
		1769	frame->prepare = prepare_cede;
		1770	frame->check = slf_check_nop;
		1771	}
		1772
		1773	static void
		1774	slf_init_cede_notself (pTHX_ struct CoroSLF frame, CV cv, SV **arg, int items)
		1775	{
		1776	frame->prepare = prepare_cede_notself;
		1777	frame->check = slf_check_nop;
		1778	}
		1779
		1780	/*
		1781	* these not obviously related functions are all rolled into one
		1782	* function to increase chances that they all will call transfer with the same
		1783	* stack offset
		1784	* SLF stands for "schedule-like-function".
		1785	*/
		1786	static OP *
		1787	pp_slf (pTHX)
		1788	{
		1789	I32 checkmark; /* mark SP to see how many elements check has pushed */
		1790
		1791	/* set up the slf frame, unless it has already been set-up */
		1792	/* the latter happens when a new coro has been started */
		1793	/* or when a new cctx was attached to an existing coroutine */
		1794	if (expect_true (!slf_frame.prepare))
		1795	{
		1796	/* first iteration */
		1797	dSP;
		1798	SV **arg = PL_stack_base + TOPMARK + 1;
		1799	int items = SP - arg; /* args without function object */
		1800	SV gv = sp;
		1801
		1802	/* do a quick consistency check on the "function" object, and if it isn't */
		1803	/* for us, divert to the real entersub */
		1804	if (SvTYPE (gv) != SVt_PVGV
		1805	\|\| !GvCV (gv)
		1806	\|\| !(CvFLAGS (GvCV (gv)) & CVf_SLF))
		1807	return PL_ppaddr[OP_ENTERSUB](aTHX);
		1808
		1809	if (!(PL_op->op_flags & OPf_STACKED))
		1810	{
		1811	/* ampersand-form of call, use @_ instead of stack */
		1812	AV *av = GvAV (PL_defgv);
		1813	arg = AvARRAY (av);
		1814	items = AvFILLp (av) + 1;
		1815	}
		1816
		1817	/* now call the init function, which needs to set up slf_frame */
		1818	((coro_slf_cb)CvXSUBANY (GvCV (gv)).any_ptr)
		1819	(aTHX_ &slf_frame, GvCV (gv), arg, items);
		1820
		1821	/* pop args */
		1822	SP = PL_stack_base + POPMARK;
		1823
		1824	PUTBACK;
		1825	}
		1826
		1827	/* now that we have a slf_frame, interpret it! */
		1828	/* we use a callback system not to make the code needlessly */
		1829	/* complicated, but so we can run multiple perl coros from one cctx */
		1830
		1831	do
		1832	{
		1833	struct coro_transfer_args ta;
		1834
		1835	slf_frame.prepare (aTHX_ &ta);
		1836	TRANSFER (ta, 0);
		1837
		1838	checkmark = PL_stack_sp - PL_stack_base;
		1839	}
		1840	while (slf_frame.check (aTHX_ &slf_frame));
		1841
		1842	slf_frame.prepare = 0; /* invalidate the frame, we are done processing it */
		1843
		1844	/* return value handling - mostly like entersub */
		1845	/* make sure we put something on the stack in scalar context */
		1846	if (GIMME_V == G_SCALAR)
		1847	{
		1848	dSP;
		1849	SV **bot = PL_stack_base + checkmark;
		1850
		1851	if (sp == bot) /* too few, push undef */
		1852	bot [1] = &PL_sv_undef;
		1853	else if (sp != bot + 1) /* too many, take last one */
		1854	bot [1] = *sp;
		1855
		1856	SP = bot + 1;
		1857
		1858	PUTBACK;
		1859	}
		1860
		1861	/* exception handling */
		1862	if (expect_false (coro_throw))
		1863	{
		1864	SV *exception = sv_2mortal (coro_throw);
		1865
		1866	coro_throw = 0;
		1867	sv_setsv (ERRSV, exception);
		1868	croak (0);
		1869	}
		1870
		1871	return NORMAL;
		1872	}
		1873
		1874	static void
		1875	api_execute_slf (pTHX_ CV *cv, coro_slf_cb init_cb, I32 ax)
		1876	{
		1877	int i;
		1878	SV **arg = PL_stack_base + ax;
		1879	int items = PL_stack_sp - arg + 1;
		1880
		1881	assert (("FATAL: SLF call with illegal CV value", !CvANON (cv)));
		1882
		1883	if (PL_op->op_ppaddr != PL_ppaddr [OP_ENTERSUB]
		1884	&& PL_op->op_ppaddr != pp_slf)
		1885	croak ("FATAL: Coro SLF calls can only be made normally, not via goto or any other means, caught");
		1886
		1887	CvFLAGS (cv) \|= CVf_SLF;
		1888	CvXSUBANY (cv).any_ptr = (void *)init_cb;
		1889	slf_cv = cv;
		1890
		1891	/* we patch the op, and then re-run the whole call */
		1892	/* we have to put the same argument on the stack for this to work */
		1893	/* and this will be done by pp_restore */
		1894	slf_restore.op_next = (OP *)&slf_restore;
		1895	slf_restore.op_type = OP_CUSTOM;
		1896	slf_restore.op_ppaddr = pp_restore;
		1897	slf_restore.op_first = PL_op;
		1898
		1899	slf_ax = ax - 1; /* undo the ax++ inside dAXMARK */
		1900
		1901	if (PL_op->op_flags & OPf_STACKED)
		1902	{
		1903	if (items > slf_arga)
		1904	{
		1905	slf_arga = items;
		1906	free (slf_argv);
		1907	slf_argv = malloc (slf_arga * sizeof (SV *));
		1908	}
		1909
		1910	slf_argc = items;
		1911
		1912	for (i = 0; i < items; ++i)
		1913	slf_argv [i] = SvREFCNT_inc (arg [i]);
		1914	}
		1915	else
		1916	slf_argc = 0;
		1917
		1918	PL_op->op_ppaddr = pp_slf;
		1919	PL_op->op_type = OP_CUSTOM; /* maybe we should leave it at entersub? */
		1920
		1921	PL_op = (OP *)&slf_restore;
1692	}	1922	}
1693		1923
1694	/*****************************************************************************/	1924	/*****************************************************************************/
1695	/* PerlIO::cede */	1925	/* PerlIO::cede */
1696		1926
…		…
1765	PerlIOBuf_get_cnt,	1995	PerlIOBuf_get_cnt,
1766	PerlIOBuf_set_ptrcnt,	1996	PerlIOBuf_set_ptrcnt,
1767	};	1997	};
1768		1998
1769	/*****************************************************************************/	1999	/*****************************************************************************/
1770		2000	/* Coro::Semaphore */
1771	static const CV slf_cv; / for quick consistency check */
1772
1773	static UNOP slf_restore; /* restore stack as entersub did, for first-re-run */
1774	static SV *slf_arg0;
1775	static SV *slf_arg1;
1776	static SV *slf_arg2;
1777
1778	/* this restores the stack in the case we patched the entersub, to */
1779	/* recreate the stack frame as perl will on following calls */
1780	/* since entersub cleared the stack */
1781	static OP *
1782	pp_restore (pTHX)
1783	{
1784	dSP;
1785
1786	PUSHMARK (SP);
1787
1788	EXTEND (SP, 3);
1789	if (slf_arg0) PUSHs (sv_2mortal (slf_arg0));
1790	if (slf_arg1) PUSHs (sv_2mortal (slf_arg1));
1791	if (slf_arg2) PUSHs (sv_2mortal (slf_arg2));
1792	PUSHs ((SV *)CvGV (slf_cv));
1793
1794	RETURNOP (slf_restore.op_first);
1795	}
1796
1797	static void
1798	slf_prepare_set_stacklevel (pTHX_ struct coro_transfer_args *ta)
1799	{
1800	prepare_set_stacklevel (ta, (struct coro_cctx *)slf_frame.data);
1801	}
1802
1803	static void
1804	slf_init_set_stacklevel (pTHX_ struct CoroSLF frame, CV cv, SV **arg, int items)
1805	{
1806	assert (("FATAL: set_stacklevel needs the coro cctx as sole argument", items == 1));
1807
1808	frame->prepare = slf_prepare_set_stacklevel;
1809	frame->check = slf_check_nop;
1810	frame->data = (void *)SvIV (arg [0]);
1811	}
1812
1813	static void
1814	slf_prepare_transfer (pTHX_ struct coro_transfer_args *ta)
1815	{
1816	SV arg = (SV )slf_frame.data;
1817
1818	prepare_transfer (aTHX_ ta, arg [0], arg [1]);
1819
1820	/* if the destination has ->throw set, then copy it */
1821	/* into the current coro's throw slot, so it will be raised */
1822	/* after the schedule */
1823	if (expect_false (ta->next->throw))
1824	{
1825	struct coro *coro = SvSTATE_current;
1826	SvREFCNT_dec (coro->throw);
1827	coro->throw = ta->next->throw;
1828	ta->next->throw = 0;
1829	}
1830	}
1831
1832	static void
1833	slf_init_transfer (pTHX_ struct CoroSLF frame, CV cv, SV **arg, int items)
1834	{
1835	if (items != 2)
1836	croak ("Coro::State::transfer (prev, next) expects two arguments, not %d,", items);
1837
1838	frame->prepare = slf_prepare_transfer;
1839	frame->check = slf_check_nop;
1840	frame->data = (void )arg; / let's hope it will stay valid */
1841	}
1842
1843	static void
1844	slf_init_schedule (pTHX_ struct CoroSLF frame, CV cv, SV **arg, int items)
1845	{
1846	frame->prepare = prepare_schedule;
1847	frame->check = slf_check_nop;
1848	}
1849
1850	static void
1851	slf_init_cede (pTHX_ struct CoroSLF frame, CV cv, SV **arg, int items)
1852	{
1853	frame->prepare = prepare_cede;
1854	frame->check = slf_check_nop;
1855	}
1856
1857	static void
1858	slf_init_cede_notself (pTHX_ struct CoroSLF frame, CV cv, SV **arg, int items)
1859	{
1860	frame->prepare = prepare_cede_notself;
1861	frame->check = slf_check_nop;
1862	}
1863
1864	/* we hijack an hopefully unused CV flag for our purposes */
1865	#define CVf_SLF 0x4000
1866
1867	/*
1868	* these not obviously related functions are all rolled into one
1869	* function to increase chances that they all will call transfer with the same
1870	* stack offset
1871	* SLF stands for "schedule-like-function".
1872	*/
1873	static OP *
1874	pp_slf (pTHX)
1875	{
1876	I32 checkmark; /* mark SP to see how many elements check has pushed */
1877
1878	/* set up the slf frame, unless it has already been set-up */
1879	/* the latter happens when a new coro has been started */
1880	/* or when a new cctx was attached to an existing coroutine */
1881	if (expect_true (!slf_frame.prepare))
1882	{
1883	/* first iteration */
1884	dSP;
1885	SV **arg = PL_stack_base + TOPMARK + 1;
1886	int items = SP - arg; /* args without function object */
1887	SV gv = sp;
1888
1889	/* do a quick consistency check on the "function" object, and if it isn't */
1890	/* for us, divert to the real entersub */
1891	if (SvTYPE (gv) != SVt_PVGV \|\| !(CvFLAGS (GvCV (gv)) & CVf_SLF))
1892	return PL_ppaddr[OP_ENTERSUB](aTHX);
1893
1894	if (!(PL_op->op_flags & OPf_STACKED))
1895	{
1896	/* ampersand-form of call, use @_ instead of stack */
1897	AV *av = GvAV (PL_defgv);
1898	arg = AvARRAY (av);
1899	items = AvFILLp (av) + 1;
1900	}
1901
1902	PUTBACK;
1903
1904	/* now call the init function, which needs to set up slf_frame */
1905	((coro_slf_cb)CvXSUBANY (GvCV (gv)).any_ptr)
1906	(aTHX_ &slf_frame, GvCV (gv), arg, items);
1907
1908	/* pop args */
1909	SP = PL_stack_base + POPMARK;
1910
1911	PUTBACK;
1912	}
1913
1914	/* now that we have a slf_frame, interpret it! */
1915	/* we use a callback system not to make the code needlessly */
1916	/* complicated, but so we can run multiple perl coros from one cctx */
1917
1918	do
1919	{
1920	struct coro_transfer_args ta;
1921
1922	slf_frame.prepare (aTHX_ &ta);
1923	TRANSFER (ta, 0);
1924
1925	checkmark = PL_stack_sp - PL_stack_base;
1926	}
1927	while (slf_frame.check (aTHX_ &slf_frame));
1928
1929	{
1930	dSP;
1931	SV **bot = PL_stack_base + checkmark;
1932	int gimme = GIMME_V;
1933
1934	slf_frame.prepare = 0; /* invalidate the frame, so it gets initialised again next time */
1935
1936	/* make sure we put something on the stack in scalar context */
1937	if (gimme == G_SCALAR)
1938	{
1939	if (sp == bot)
1940	XPUSHs (&PL_sv_undef);
1941
1942	SP = bot + 1;
1943	}
1944
1945	PUTBACK;
1946	}
1947
1948	{
1949	struct coro *coro = SvSTATE_current;
1950
1951	if (expect_false (coro->throw))
1952	{
1953	SV *exception = sv_2mortal (coro->throw);
1954
1955	coro->throw = 0;
1956	sv_setsv (ERRSV, exception);
1957	croak (0);
1958	}
1959	}
1960
1961	return NORMAL;
1962	}
1963
1964	static void
1965	api_execute_slf (pTHX_ CV cv, coro_slf_cb init_cb, SV *arg, int items)
1966	{
1967	assert (("FATAL: SLF call with illegal CV value", !CvANON (cv)));
1968
1969	if (PL_op->op_ppaddr != PL_ppaddr [OP_ENTERSUB]
1970	&& PL_op->op_ppaddr != pp_slf)
1971	croak ("FATAL: Coro SLF calls can only be made normally, not via goto or any other means, caught");
1972
1973	if (items > 3)
1974	croak ("Coro only supports up to three arguments to SLF functions currently (not %d), caught", items);
1975
1976	CvFLAGS (cv) \|= CVf_SLF;
1977	CvXSUBANY (cv).any_ptr = (void *)init_cb;
1978	slf_cv = cv;
1979
1980	/* we patch the op, and then re-run the whole call */
1981	/* we have to put the same argument on the stack for this to work */
1982	/* and this will be done by pp_restore */
1983	slf_restore.op_next = (OP *)&slf_restore;
1984	slf_restore.op_type = OP_CUSTOM;
1985	slf_restore.op_ppaddr = pp_restore;
1986	slf_restore.op_first = PL_op;
1987
1988	slf_arg0 = items > 0 ? SvREFCNT_inc (arg [0]) : 0;
1989	slf_arg1 = items > 1 ? SvREFCNT_inc (arg [1]) : 0;
1990	slf_arg2 = items > 2 ? SvREFCNT_inc (arg [2]) : 0;
1991
1992	PL_op->op_ppaddr = pp_slf;
1993
1994	PL_op = (OP *)&slf_restore;
1995	}
1996
1997	/*****************************************************************************/
1998		2001
1999	static void	2002	static void
2000	coro_semaphore_adjust (pTHX_ AV *av, IV adjust)	2003	coro_semaphore_adjust (pTHX_ AV *av, IV adjust)
2001	{	2004	{
2002	SV *count_sv = AvARRAY (av)[0];	2005	SV *count_sv = AvARRAY (av)[0];
…		…
2037	slf_check_semaphore_down (pTHX_ struct CoroSLF *frame)	2040	slf_check_semaphore_down (pTHX_ struct CoroSLF *frame)
2038	{	2041	{
2039	AV av = (AV )frame->data;	2042	AV av = (AV )frame->data;
2040	SV *count_sv = AvARRAY (av)[0];	2043	SV *count_sv = AvARRAY (av)[0];
2041		2044
		2045	/* if we are about to throw, don't actually acquire the lock, just throw */
		2046	if (coro_throw && 0)//D
		2047	return 0;
2042	if (SvIVX (count_sv) > 0)	2048	else if (SvIVX (count_sv) > 0)
2043	{	2049	{
2044	SvSTATE_current->on_destroy = 0;	2050	SvSTATE_current->on_destroy = 0;
2045	SvIVX (count_sv) = SvIVX (count_sv) - 1;	2051	SvIVX (count_sv) = SvIVX (count_sv) - 1;
2046	return 0;	2052	return 0;
2047	}	2053	}
…		…
2068		2074
2069	if (SvIVX (AvARRAY (av)[0]) > 0)	2075	if (SvIVX (AvARRAY (av)[0]) > 0)
2070	{	2076	{
2071	frame->data = (void *)av;	2077	frame->data = (void *)av;
2072	frame->prepare = prepare_nop;	2078	frame->prepare = prepare_nop;
2073	SvSTATE_current->on_destroy = coro_semaphore_on_destroy;
2074	}	2079	}
2075	else	2080	else
2076	{	2081	{
2077	av_push (av, SvREFCNT_inc (SvRV (coro_current)));	2082	av_push (av, SvREFCNT_inc (SvRV (coro_current)));
2078		2083
2079	frame->data = (void )sv_2mortal (SvREFCNT_inc ((SV )av));	2084	frame->data = (void )sv_2mortal (SvREFCNT_inc ((SV )av));
2080	frame->prepare = prepare_schedule;	2085	frame->prepare = prepare_schedule;
2081		2086
2082	/* to avoid race conditions when a woken-up coro gets terminated */	2087	/* to avoid race conditions when a woken-up coro gets terminated */
2083	/* we arrange for a temporary on_destroy that calls adjust (0) */	2088	/* we arrange for a temporary on_destroy that calls adjust (0) */
2084	assert (!SvSTATE_current->on_destroy);//D
2085	SvSTATE_current->on_destroy = coro_semaphore_on_destroy;	2089	SvSTATE_current->on_destroy = coro_semaphore_on_destroy;
2086	}	2090	}
2087		2091
2088	frame->check = slf_check_semaphore_down;	2092	frame->check = slf_check_semaphore_down;
2089		2093
2090	}	2094	}
2091		2095
2092	/*****************************************************************************/	2096	/*****************************************************************************/
		2097	/* gensub: simple closure generation utility */
2093		2098
2094	#define GENSUB_ARG CvXSUBANY (cv).any_ptr	2099	#define GENSUB_ARG CvXSUBANY (cv).any_ptr
2095		2100
2096	/* create a closure from XS, returns a code reference */	2101	/* create a closure from XS, returns a code reference */
2097	/* the arg can be accessed via GENSUB_ARG from the callback */	2102	/* the arg can be accessed via GENSUB_ARG from the callback */
2098	/* the callback must use dXSARGS/XSRETURN */	2103	/* the callback must use dXSARGS/XSRETURN */
2099	static SV *	2104	static SV *
2100	gensub (pTHX_ void (xsub)(pTHX_ CV ), void *arg)	2105	gensub (pTHX_ void (xsub)(pTHX_ CV ), void *arg)
2101	{	2106	{
2102	CV cv = (CV )NEWSV (0, 0);	2107	CV cv = (CV )newSV (0);
2103		2108
2104	sv_upgrade ((SV *)cv, SVt_PVCV);	2109	sv_upgrade ((SV *)cv, SVt_PVCV);
2105		2110
2106	CvANON_on (cv);	2111	CvANON_on (cv);
2107	CvISXSUB_on (cv);	2112	CvISXSUB_on (cv);
2108	CvXSUB (cv) = xsub;	2113	CvXSUB (cv) = xsub;
2109	GENSUB_ARG = arg;	2114	GENSUB_ARG = arg;
2110		2115
2111	return newRV_noinc ((SV *)cv);	2116	return newRV_noinc ((SV *)cv);
		2117	}
		2118
		2119	/*****************************************************************************/
		2120	/* Coro::AIO */
		2121
		2122	#define CORO_MAGIC_type_aio PERL_MAGIC_ext
		2123
		2124	/* helper storage struct */
		2125	struct io_state
		2126	{
		2127	int errorno;
		2128	I32 laststype; /* U16 in 5.10.0 */
		2129	int laststatval;
		2130	Stat_t statcache;
		2131	};
		2132
		2133	static void
		2134	coro_aio_callback (pTHX_ CV *cv)
		2135	{
		2136	dXSARGS;
		2137	AV state = (AV )GENSUB_ARG;
		2138	SV *coro = av_pop (state);
		2139	SV *data_sv = newSV (sizeof (struct io_state));
		2140
		2141	av_extend (state, items);
		2142
		2143	sv_upgrade (data_sv, SVt_PV);
		2144	SvCUR_set (data_sv, sizeof (struct io_state));
		2145	SvPOK_only (data_sv);
		2146
		2147	{
		2148	struct io_state data = (struct io_state )SvPVX (data_sv);
		2149
		2150	data->errorno = errno;
		2151	data->laststype = PL_laststype;
		2152	data->laststatval = PL_laststatval;
		2153	data->statcache = PL_statcache;
		2154	}
		2155
		2156	/* now build the result vector out of all the parameters and the data_sv */
		2157	{
		2158	int i;
		2159
		2160	for (i = 0; i < items; ++i)
		2161	av_push (state, SvREFCNT_inc_NN (ST (i)));
		2162	}
		2163
		2164	av_push (state, data_sv);
		2165
		2166	api_ready (aTHX_ coro);
		2167	SvREFCNT_dec (coro);
		2168	SvREFCNT_dec ((AV *)state);
		2169	}
		2170
		2171	static int
		2172	slf_check_aio_req (pTHX_ struct CoroSLF *frame)
		2173	{
		2174	AV state = (AV )frame->data;
		2175
		2176	/* one element that is an RV? repeat! */
		2177	if (AvFILLp (state) == 0 && SvROK (AvARRAY (state)[0]))
		2178	return 1;
		2179
		2180	/* restore status */
		2181	{
		2182	SV *data_sv = av_pop (state);
		2183	struct io_state data = (struct io_state )SvPVX (data_sv);
		2184
		2185	errno = data->errorno;
		2186	PL_laststype = data->laststype;
		2187	PL_laststatval = data->laststatval;
		2188	PL_statcache = data->statcache;
		2189
		2190	SvREFCNT_dec (data_sv);
		2191	}
		2192
		2193	/* push result values */
		2194	{
		2195	dSP;
		2196	int i;
		2197
		2198	EXTEND (SP, AvFILLp (state) + 1);
		2199	for (i = 0; i <= AvFILLp (state); ++i)
		2200	PUSHs (sv_2mortal (SvREFCNT_inc_NN (AvARRAY (state)[i])));
		2201
		2202	PUTBACK;
		2203	}
		2204
		2205	return 0;
		2206	}
		2207
		2208	static void
		2209	slf_init_aio_req (pTHX_ struct CoroSLF frame, CV cv, SV **arg, int items)
		2210	{
		2211	AV state = (AV )sv_2mortal ((SV *)newAV ());
		2212	SV *coro_hv = SvRV (coro_current);
		2213	struct coro *coro = SvSTATE_hv (coro_hv);
		2214
		2215	/* put our coroutine id on the state arg */
		2216	av_push (state, SvREFCNT_inc_NN (coro_hv));
		2217
		2218	/* first see whether we have a non-zero priority and set it as AIO prio */
		2219	if (coro->prio)
		2220	{
		2221	dSP;
		2222
		2223	static SV *prio_cv;
		2224	static SV *prio_sv;
		2225
		2226	if (expect_false (!prio_cv))
		2227	{
		2228	prio_cv = (SV *)get_cv ("IO::AIO::aioreq_pri", 0);
		2229	prio_sv = newSViv (0);
		2230	}
		2231
		2232	PUSHMARK (SP);
		2233	sv_setiv (prio_sv, coro->prio);
		2234	XPUSHs (prio_sv);
		2235
		2236	PUTBACK;
		2237	call_sv (prio_cv, G_VOID \| G_DISCARD);
		2238	}
		2239
		2240	/* now call the original request */
		2241	{
		2242	dSP;
		2243	CV req = (CV )CORO_MAGIC_NN ((SV *)cv, CORO_MAGIC_type_aio)->mg_obj;
		2244	int i;
		2245
		2246	PUSHMARK (SP);
		2247
		2248	/* first push all args to the stack */
		2249	EXTEND (SP, items + 1);
		2250
		2251	for (i = 0; i < items; ++i)
		2252	PUSHs (arg [i]);
		2253
		2254	/* now push the callback closure */
		2255	PUSHs (sv_2mortal (gensub (aTHX_ coro_aio_callback, (void )SvREFCNT_inc_NN ((SV )state))));
		2256
		2257	/* now call the AIO function - we assume our request is uncancelable */
		2258	PUTBACK;
		2259	call_sv ((SV *)req, G_VOID \| G_DISCARD);
		2260	}
		2261
		2262	/* now that the requets is going, we loop toll we have a result */
		2263	frame->data = (void *)state;
		2264	frame->prepare = prepare_schedule;
		2265	frame->check = slf_check_aio_req;
		2266	}
		2267
		2268	static void
		2269	coro_aio_req_xs (pTHX_ CV *cv)
		2270	{
		2271	dXSARGS;
		2272
		2273	CORO_EXECUTE_SLF_XS (slf_init_aio_req);
		2274
		2275	XSRETURN_EMPTY;
2112	}	2276	}
2113		2277
2114	/*****************************************************************************/	2278	/*****************************************************************************/
2115		2279
2116	MODULE = Coro::State PACKAGE = Coro::State PREFIX = api_	2280	MODULE = Coro::State PACKAGE = Coro::State PREFIX = api_
…		…
2214	}	2378	}
2215	OUTPUT:	2379	OUTPUT:
2216	RETVAL	2380	RETVAL
2217		2381
2218	void	2382	void
2219	_set_stacklevel (...)
2220	CODE:
2221	api_execute_slf (aTHX_ cv, slf_init_set_stacklevel, &ST (0), items);
2222
2223	void
2224	transfer (...)	2383	transfer (...)
2225	PROTOTYPE: $$	2384	PROTOTYPE: $$
2226	CODE:	2385	CODE:
2227	api_execute_slf (aTHX_ cv, slf_init_transfer, &ST (0), items);	2386	CORO_EXECUTE_SLF_XS (slf_init_transfer);
2228		2387
2229	bool	2388	bool
2230	_destroy (SV *coro_sv)	2389	_destroy (SV *coro_sv)
2231	CODE:	2390	CODE:
2232	RETVAL = coro_state_destroy (aTHX_ SvSTATE (coro_sv));	2391	RETVAL = coro_state_destroy (aTHX_ SvSTATE (coro_sv));
…		…
2350		2509
2351	void	2510	void
2352	throw (Coro::State self, SV *throw = &PL_sv_undef)	2511	throw (Coro::State self, SV *throw = &PL_sv_undef)
2353	PROTOTYPE: $;$	2512	PROTOTYPE: $;$
2354	CODE:	2513	CODE:
		2514	{
		2515	struct coro *current = SvSTATE_current;
		2516	SV **throwp = self == current ? &coro_throw : &self->throw;
2355	SvREFCNT_dec (self->throw);	2517	SvREFCNT_dec (*throwp);
2356	self->throw = SvOK (throw) ? newSVsv (throw) : 0;	2518	*throwp = SvOK (throw) ? newSVsv (throw) : 0;
		2519	}
2357		2520
2358	void	2521	void
2359	api_trace (SV *coro, int flags = CC_TRACE \| CC_TRACE_SUB)	2522	api_trace (SV *coro, int flags = CC_TRACE \| CC_TRACE_SUB)
2360	PROTOTYPE: $;$	2523	PROTOTYPE: $;$
2361	C_ARGS: aTHX_ coro, flags	2524	C_ARGS: aTHX_ coro, flags
…		…
2410	SV dst = ix ? (SV )&self->slot->defav : (SV **)&self->slot->defsv;	2573	SV dst = ix ? (SV )&self->slot->defav : (SV **)&self->slot->defsv;
2411		2574
2412	SV tmp = src; src = dst; *dst = tmp;	2575	SV tmp = src; src = dst; *dst = tmp;
2413	}	2576	}
2414		2577
		2578
2415	MODULE = Coro::State PACKAGE = Coro	2579	MODULE = Coro::State PACKAGE = Coro
2416		2580
2417	BOOT:	2581	BOOT:
2418	{	2582	{
2419	int i;	2583	int i;
…		…
2455	}	2619	}
2456		2620
2457	void	2621	void
2458	schedule (...)	2622	schedule (...)
2459	CODE:	2623	CODE:
2460	api_execute_slf (aTHX_ cv, slf_init_schedule, &ST (0), 0);	2624	CORO_EXECUTE_SLF_XS (slf_init_schedule);
2461		2625
2462	void	2626	void
2463	cede (...)	2627	cede (...)
2464	CODE:	2628	CODE:
2465	api_execute_slf (aTHX_ cv, slf_init_cede, &ST (0), 0);	2629	CORO_EXECUTE_SLF_XS (slf_init_cede);
2466		2630
2467	void	2631	void
2468	cede_notself (...)	2632	cede_notself (...)
2469	CODE:	2633	CODE:
2470	api_execute_slf (aTHX_ cv, slf_init_cede_notself, &ST (0), 0);	2634	CORO_EXECUTE_SLF_XS (slf_init_cede_notself);
2471		2635
2472	void	2636	void
2473	_set_current (SV *current)	2637	_set_current (SV *current)
2474	PROTOTYPE: $	2638	PROTOTYPE: $
2475	CODE:	2639	CODE:
…		…
2563		2727
2564	void	2728	void
2565	_pool_2 (SV *cb)	2729	_pool_2 (SV *cb)
2566	CODE:	2730	CODE:
2567	{	2731	{
2568	struct coro *coro = SvSTATE_current;	2732	HV hv = (HV )SvRV (coro_current);
		2733	struct coro coro = SvSTATE_hv ((SV )hv);
2569		2734
2570	sv_setsv (cb, &PL_sv_undef);	2735	sv_setsv (cb, &PL_sv_undef);
2571		2736
2572	SvREFCNT_dec ((SV )PL_defoutgv); PL_defoutgv = (GV )coro->saved_deffh;	2737	SvREFCNT_dec ((SV )PL_defoutgv); PL_defoutgv = (GV )coro->saved_deffh;
2573	coro->saved_deffh = 0;	2738	coro->saved_deffh = 0;
…		…
2580	SvREFCNT_dec (old);	2745	SvREFCNT_dec (old);
2581	croak ("\3async_pool terminate\2\n");	2746	croak ("\3async_pool terminate\2\n");
2582	}	2747	}
2583		2748
2584	av_clear (GvAV (PL_defgv));	2749	av_clear (GvAV (PL_defgv));
2585	hv_store ((HV *)SvRV (coro_current), "desc", sizeof ("desc") - 1,	2750	hv_store (hv, "desc", sizeof ("desc") - 1,
2586	newSVpvn ("[async_pool idle]", sizeof ("[async_pool idle]") - 1), 0);	2751	newSVpvn ("[async_pool idle]", sizeof ("[async_pool idle]") - 1), 0);
2587		2752
2588	coro->prio = 0;	2753	coro->prio = 0;
2589		2754
2590	if (coro->cctx && (coro->cctx->flags & CC_TRACE))	2755	if (coro->cctx && (coro->cctx->flags & CC_TRACE))
…		…
2592		2757
2593	av_push (av_async_pool, newSVsv (coro_current));	2758	av_push (av_async_pool, newSVsv (coro_current));
2594	}	2759	}
2595		2760
2596		2761
2597	MODULE = Coro::State PACKAGE = Coro::AIO
2598
2599	void
2600	_get_state (SV *self)
2601	PROTOTYPE: $
2602	PPCODE:
2603	{
2604	AV *defav = GvAV (PL_defgv);
2605	AV *av = newAV ();
2606	int i;
2607	SV *data_sv = newSV (sizeof (struct io_state));
2608	struct io_state data = (struct io_state )SvPVX (data_sv);
2609	SvCUR_set (data_sv, sizeof (struct io_state));
2610	SvPOK_only (data_sv);
2611
2612	data->errorno = errno;
2613	data->laststype = PL_laststype;
2614	data->laststatval = PL_laststatval;
2615	data->statcache = PL_statcache;
2616
2617	av_extend (av, AvFILLp (defav) + 1 + 1);
2618
2619	for (i = 0; i <= AvFILLp (defav); ++i)
2620	av_push (av, SvREFCNT_inc_NN (AvARRAY (defav)[i]));
2621
2622	av_push (av, data_sv);
2623
2624	XPUSHs (sv_2mortal (newRV_noinc ((SV *)av)));
2625
2626	api_ready (aTHX_ self);
2627	}
2628
2629	void
2630	_set_state (SV *state)
2631	PROTOTYPE: $
2632	PPCODE:
2633	{
2634	AV av = (AV )SvRV (state);
2635	struct io_state data = (struct io_state )SvPVX (AvARRAY (av)[AvFILLp (av)]);
2636	int i;
2637
2638	errno = data->errorno;
2639	PL_laststype = data->laststype;
2640	PL_laststatval = data->laststatval;
2641	PL_statcache = data->statcache;
2642
2643	EXTEND (SP, AvFILLp (av));
2644	for (i = 0; i < AvFILLp (av); ++i)
2645	PUSHs (sv_2mortal (SvREFCNT_inc_NN (AvARRAY (av)[i])));
2646	}
2647
2648
2649	MODULE = Coro::State PACKAGE = Coro::AnyEvent
2650
2651	BOOT:
2652	sv_activity = coro_get_sv (aTHX_ "Coro::AnyEvent::ACTIVITY", TRUE);
2653
2654	void
2655	_schedule (...)
2656	CODE:
2657	{
2658	static int incede;
2659
2660	api_cede_notself (aTHX);
2661
2662	++incede;
2663	while (coro_nready >= incede && api_cede (aTHX))
2664	;
2665
2666	sv_setsv (sv_activity, &PL_sv_undef);
2667	if (coro_nready >= incede)
2668	{
2669	PUSHMARK (SP);
2670	PUTBACK;
2671	call_pv ("Coro::AnyEvent::_activity", G_DISCARD \| G_EVAL);
2672	SPAGAIN;
2673	}
2674
2675	--incede;
2676	}
2677
2678
2679	MODULE = Coro::State PACKAGE = PerlIO::cede	2762	MODULE = Coro::State PACKAGE = PerlIO::cede
2680		2763
2681	BOOT:	2764	BOOT:
2682	PerlIO_define_layer (aTHX_ &PerlIO_cede);	2765	PerlIO_define_layer (aTHX_ &PerlIO_cede);
		2766
2683		2767
2684	MODULE = Coro::State PACKAGE = Coro::Semaphore	2768	MODULE = Coro::State PACKAGE = Coro::Semaphore
2685		2769
2686	SV *	2770	SV *
2687	new (SV klass, SV count_ = 0)	2771	new (SV klass, SV count_ = 0)
2688	CODE:	2772	CODE:
2689	{	2773	{
2690	/* a semaphore contains a counter IV in $sem->[0] and any waiters after that */	2774	/* a semaphore contains a counter IV in $sem->[0] and any waiters after that */
2691	AV *av = newAV ();	2775	AV *av = newAV ();
		2776	SV **ary;
		2777
		2778	/* unfortunately, building manually saves memory */
		2779	Newx (ary, 2, SV *);
		2780	AvALLOC (av) = ary;
		2781	AvARRAY (av) = ary;
		2782	AvMAX (av) = 1;
		2783	AvFILLp (av) = 0;
2692	av_push (av, newSViv (count_ && SvOK (count_) ? SvIV (count_) : 1));	2784	ary [0] = newSViv (count_ && SvOK (count_) ? SvIV (count_) : 1);
		2785
2693	RETVAL = sv_bless (newRV_noinc ((SV *)av), GvSTASH (CvGV (cv)));	2786	RETVAL = sv_bless (newRV_noinc ((SV *)av), GvSTASH (CvGV (cv)));
2694	}	2787	}
2695	OUTPUT:	2788	OUTPUT:
2696	RETVAL	2789	RETVAL
2697		2790
…		…
2710	coro_semaphore_adjust (aTHX_ (AV *)SvRV (self), ix ? adjust : 1);	2803	coro_semaphore_adjust (aTHX_ (AV *)SvRV (self), ix ? adjust : 1);
2711		2804
2712	void	2805	void
2713	down (SV *self)	2806	down (SV *self)
2714	CODE:	2807	CODE:
2715	api_execute_slf (aTHX_ cv, slf_init_semaphore_down, &ST (0), 1);	2808	CORO_EXECUTE_SLF_XS (slf_init_semaphore_down);
2716		2809
2717	void	2810	void
2718	try (SV *self)	2811	try (SV *self)
2719	PPCODE:	2812	PPCODE:
2720	{	2813	{
…		…
2743	else	2836	else
2744	{	2837	{
2745	int i;	2838	int i;
2746	EXTEND (SP, AvFILLp (av) + 1 - 1);	2839	EXTEND (SP, AvFILLp (av) + 1 - 1);
2747	for (i = 1; i <= AvFILLp (av); ++i)	2840	for (i = 1; i <= AvFILLp (av); ++i)
2748	PUSHs (newSVsv (AvARRAY (av)[i]));	2841	PUSHs (sv_2mortal (newRV_inc (AvARRAY (av)[i])));
2749	}	2842	}
2750	}	2843	}
2751		2844
		2845
		2846	MODULE = Coro::State PACKAGE = Coro::AnyEvent
		2847
		2848	BOOT:
		2849	sv_activity = coro_get_sv (aTHX_ "Coro::AnyEvent::ACTIVITY", TRUE);
		2850
		2851	void
		2852	_schedule (...)
		2853	CODE:
		2854	{
		2855	static int incede;
		2856
		2857	api_cede_notself (aTHX);
		2858
		2859	++incede;
		2860	while (coro_nready >= incede && api_cede (aTHX))
		2861	;
		2862
		2863	sv_setsv (sv_activity, &PL_sv_undef);
		2864	if (coro_nready >= incede)
		2865	{
		2866	PUSHMARK (SP);
		2867	PUTBACK;
		2868	call_pv ("Coro::AnyEvent::_activity", G_KEEPERR \| G_EVAL \| G_VOID \| G_DISCARD);
		2869	}
		2870
		2871	--incede;
		2872	}
		2873
		2874
		2875	MODULE = Coro::State PACKAGE = Coro::AIO
		2876
		2877	void
		2878	_register (char target, char proto, SV *req)
		2879	CODE:
		2880	{
		2881	HV *st;
		2882	GV *gvp;
		2883	CV *req_cv = sv_2cv (req, &st, &gvp, 0);
		2884	/* newXSproto doesn't return the CV on 5.8 */
		2885	CV *slf_cv = newXS (target, coro_aio_req_xs, __FILE__);
		2886	sv_setpv ((SV *)slf_cv, proto);
		2887	sv_magicext ((SV )slf_cv, (SV )req_cv, CORO_MAGIC_type_aio, 0, 0, 0);
		2888	}
		2889

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+Changed lines
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Comparing Coro/Coro/State.xs (file contents): Revision 1.283 by root, Sun Nov 16 11:12:57 2008 UTC vs. Revision 1.295 by root, Tue Nov 18 10:35:01 2008 UTC

Diff Legend

Comparing Coro/Coro/State.xs (file contents):
Revision 1.283 by root, Sun Nov 16 11:12:57 2008 UTC vs.
Revision 1.295 by root, Tue Nov 18 10:35:01 2008 UTC