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

Comparing Coro/Coro/State.xs (file contents):
Revision 1.270 by root, Fri Nov 14 07:22:11 2008 UTC vs.
Revision 1.278 by root, Sun Nov 16 07:09:28 2008 UTC

…		…
183	static JMPENV *main_top_env;	183	static JMPENV *main_top_env;
184	static HV coro_state_stash, coro_stash;	184	static HV coro_state_stash, coro_stash;
185	static volatile SV coro_mortal; / will be freed/thrown after next transfer */	185	static volatile SV coro_mortal; / will be freed/thrown after next transfer */
186	static volatile struct coro *transfer_next;	186	static volatile struct coro *transfer_next;
187		187
188	struct transfer_args
189	{
190	struct coro prev, next;
191	};
192
193	static GV irsgv; / $/ */	188	static GV irsgv; / $/ */
194	static GV stdoutgv; / STDOUT /	189	static GV stdoutgv; / STDOUT /
195	static SV *rv_diehook;	190	static SV *rv_diehook;
196	static SV *rv_warnhook;	191	static SV *rv_warnhook;
197	static HV hv_sig; / %SIG */	192	static HV hv_sig; / %SIG */
…		…
215	CC_TRACE_LINE = 0x10, /* trace each statement */	210	CC_TRACE_LINE = 0x10, /* trace each statement */
216	CC_TRACE_ALL = CC_TRACE_SUB \| CC_TRACE_LINE,	211	CC_TRACE_ALL = CC_TRACE_SUB \| CC_TRACE_LINE,
217	};	212	};
218		213
219	/* this is a structure representing a c-level coroutine */	214	/* this is a structure representing a c-level coroutine */
220	typedef struct coro_cctx {	215	typedef struct coro_cctx
		216	{
221	struct coro_cctx *next;	217	struct coro_cctx *next;
222		218
223	/* the stack */	219	/* the stack */
224	void *sptr;	220	void *sptr;
225	size_t ssize;	221	size_t ssize;
…		…
243	CF_NEW = 0x0004, /* has never been switched to */	239	CF_NEW = 0x0004, /* has never been switched to */
244	CF_DESTROYED = 0x0008, /* coroutine data has been freed */	240	CF_DESTROYED = 0x0008, /* coroutine data has been freed */
245	};	241	};
246		242
247	/* the structure where most of the perl state is stored, overlaid on the cxstack */	243	/* the structure where most of the perl state is stored, overlaid on the cxstack */
248	typedef struct {	244	typedef struct
		245	{
249	SV *defsv;	246	SV *defsv;
250	AV *defav;	247	AV *defav;
251	SV *errsv;	248	SV *errsv;
252	SV *irsgv;	249	SV *irsgv;
253	#define VAR(name,type) type name;	250	#define VAR(name,type) type name;
…		…
257		254
258	#define SLOT_COUNT ((sizeof (perl_slots) + sizeof (PERL_CONTEXT) - 1) / sizeof (PERL_CONTEXT))	255	#define SLOT_COUNT ((sizeof (perl_slots) + sizeof (PERL_CONTEXT) - 1) / sizeof (PERL_CONTEXT))
259		256
260	/* this is a structure representing a perl-level coroutine */	257	/* this is a structure representing a perl-level coroutine */
261	struct coro {	258	struct coro {
262	/* the c coroutine allocated to this perl coroutine, if any */	259	/* the C coroutine allocated to this perl coroutine, if any */
263	coro_cctx *cctx;	260	coro_cctx *cctx;
264		261
265	/* process data */	262	/* process data */
		263	struct CoroSLF slf_frame; /* saved slf frame */
266	AV *mainstack;	264	AV *mainstack;
267	perl_slots slot; / basically the saved sp */	265	perl_slots slot; / basically the saved sp */
268		266
269	AV args; / data associated with this coroutine (initial args) */	267	AV args; / data associated with this coroutine (initial args) */
270	int refcnt; /* coroutines are refcounted, yes */	268	int refcnt; /* coroutines are refcounted, yes */
…		…
285	struct coro next, prev;	283	struct coro next, prev;
286	};	284	};
287		285
288	typedef struct coro *Coro__State;	286	typedef struct coro *Coro__State;
289	typedef struct coro *Coro__State_or_hashref;	287	typedef struct coro *Coro__State_or_hashref;
		288
		289	static struct CoroSLF slf_frame; /* the current slf frame */
290		290
291	/ Coro ******************************************************************/	291	/ Coro ******************************************************************/
292		292
293	#define PRIO_MAX 3	293	#define PRIO_MAX 3
294	#define PRIO_HIGH 1	294	#define PRIO_HIGH 1
…		…
514	CvPADLIST (cv) = (AV *)POPs;	514	CvPADLIST (cv) = (AV *)POPs;
515	}	515	}
516		516
517	PUTBACK;	517	PUTBACK;
518	}	518	}
		519
		520	slf_frame = c->slf_frame;
519	}	521	}
520		522
521	static void	523	static void
522	save_perl (pTHX_ Coro__State c)	524	save_perl (pTHX_ Coro__State c)
523	{	525	{
		526	c->slf_frame = slf_frame;
		527
524	{	528	{
525	dSP;	529	dSP;
526	I32 cxix = cxstack_ix;	530	I32 cxix = cxstack_ix;
527	PERL_CONTEXT *ccstk = cxstack;	531	PERL_CONTEXT *ccstk = cxstack;
528	PERL_SI *top_si = PL_curstackinfo;	532	PERL_SI *top_si = PL_curstackinfo;
…		…
595	#undef VAR	599	#undef VAR
596	}	600	}
597	}	601	}
598		602
599	/*	603	/*
600	* allocate various perl stacks. This is an exact copy	604	* allocate various perl stacks. This is almost an exact copy
601	* of perl.c:init_stacks, except that it uses less memory	605	* of perl.c:init_stacks, except that it uses less memory
602	* on the (sometimes correct) assumption that coroutines do	606	* on the (sometimes correct) assumption that coroutines do
603	* not usually need a lot of stackspace.	607	* not usually need a lot of stackspace.
604	*/	608	*/
605	#if CORO_PREFER_PERL_FUNCTIONS	609	#if CORO_PREFER_PERL_FUNCTIONS
…		…
712	#endif	716	#endif
713	}	717	}
714	}	718	}
715		719
716	return rss;	720	return rss;
717	}
718
719	/ set stacklevel support ************************************************/
720
721	/* we sometimes need to create the effect of pp_slf calling us */
722	#define SLF_HEAD (void)0
723	/* we sometimes need to create the effect of leaving via pp_slf */
724	#define SLF_TAIL slf_tail (aTHX)
725
726	INLINE void
727	slf_tail (pTHX)
728	{
729	dSP;
730	SV **bot = SP;
731
732	int gimme = GIMME_V;
733
734	/* make sure we put something on the stack in scalar context */
735	if (gimme == G_SCALAR)
736	{
737	if (sp == bot)
738	XPUSHs (&PL_sv_undef);
739
740	SP = bot + 1;
741	}
742
743	PUTBACK;
744	}	721	}
745		722
746	/ coroutine stack handling **********************************************/	723	/ coroutine stack handling **********************************************/
747		724
748	static int (orig_sigelem_get) (pTHX_ SV sv, MAGIC *mg);	725	static int (orig_sigelem_get) (pTHX_ SV sv, MAGIC *mg);
…		…
834		811
835	return orig_sigelem_set ? orig_sigelem_set (aTHX_ sv, mg) : 0;	812	return orig_sigelem_set ? orig_sigelem_set (aTHX_ sv, mg) : 0;
836	}	813	}
837		814
838	static void	815	static void
		816	prepare_nop (pTHX_ struct coro_transfer_args *ta)
		817	{
		818	/* kind of mega-hacky, but works */
		819	ta->next = ta->prev = (struct coro *)ta;
		820	}
		821
		822	static int
		823	slf_check_nop (pTHX_ struct CoroSLF *frame)
		824	{
		825	return 0;
		826	}
		827
		828	static void
839	coro_setup (pTHX_ struct coro *coro)	829	coro_setup (pTHX_ struct coro *coro)
840	{	830	{
841	/*	831	/*
842	* emulate part of the perl startup here.	832	* emulate part of the perl startup here.
843	*/	833	*/
…		…
882	PL_op = PL_ppaddr[OP_ENTERSUB](aTHX);	872	PL_op = PL_ppaddr[OP_ENTERSUB](aTHX);
883	SPAGAIN;	873	SPAGAIN;
884	}	874	}
885		875
886	/* this newly created coroutine might be run on an existing cctx which most	876	/* this newly created coroutine might be run on an existing cctx which most
887	* likely was suspended in set_stacklevel, called from pp_set_stacklevel,	877	* likely was suspended in pp_slf, so we have to emulate entering pp_slf here.
888	* so we have to emulate entering pp_set_stacklevel here.
889	*/	878	*/
890	SLF_HEAD;	879	slf_frame.prepare = prepare_nop; /* provide a nop function for an eventual pp_slf */
		880	slf_frame.check = slf_check_nop; /* signal pp_slf to not repeat */
891	}	881	}
892		882
893	static void	883	static void
894	coro_destruct (pTHX_ struct coro *coro)	884	coro_destruct (pTHX_ struct coro *coro)
895	{	885	{
…		…
1059	TAINT_NOT;	1049	TAINT_NOT;
1060	return 0;	1050	return 0;
1061	}	1051	}
1062		1052
1063	static void	1053	static void
1064	prepare_set_stacklevel (struct transfer_args ta, struct coro_cctx cctx)	1054	prepare_set_stacklevel (struct coro_transfer_args ta, struct coro_cctx cctx)
1065	{	1055	{
1066	ta->prev = (struct coro *)cctx;	1056	ta->prev = (struct coro *)cctx;
1067	ta->next = 0;	1057	ta->next = 0;
1068	}	1058	}
1069		1059
…		…
1129	# endif	1119	# endif
1130	#endif	1120	#endif
1131	{	1121	{
1132	dTHX;	1122	dTHX;
1133		1123
1134	/* we are the alternative tail to pp_set_stacklevel */	1124	/* normally we would need to skip the entersub here */
1135	/* so do the same things here */	1125	/* not doing so will re-execute it, which is exactly what we want */
1136	SLF_TAIL;
1137
1138	/* we now skip the op that did lead to transfer() */
1139	PL_op = PL_op->op_next;	1126	/* PL_nop = PL_nop->op_next */
1140		1127
1141	/* inject a fake subroutine call to cctx_init */	1128	/* inject a fake subroutine call to cctx_init */
1142	cctx_prepare (aTHX_ (coro_cctx *)arg);	1129	cctx_prepare (aTHX_ (coro_cctx *)arg);
1143		1130
1144	/* cctx_run is the alternative tail of transfer() */	1131	/* cctx_run is the alternative tail of transfer() */
		1132	/* TODO: throwing an exception here might be deadly, VERIFY */
1145	transfer_tail (aTHX);	1133	transfer_tail (aTHX);
1146		1134
1147	/* somebody or something will hit me for both perl_run and PL_restartop */	1135	/* somebody or something will hit me for both perl_run and PL_restartop */
1148	PL_restartop = PL_op;	1136	PL_restartop = PL_op;
1149	perl_run (PL_curinterp);	1137	perl_run (PL_curinterp);
…		…
1308	transfer_check (pTHX_ struct coro prev, struct coro next)	1296	transfer_check (pTHX_ struct coro prev, struct coro next)
1309	{	1297	{
1310	if (expect_true (prev != next))	1298	if (expect_true (prev != next))
1311	{	1299	{
1312	if (expect_false (!(prev->flags & (CF_RUNNING \| CF_NEW))))	1300	if (expect_false (!(prev->flags & (CF_RUNNING \| CF_NEW))))
1313	croak ("Coro::State::transfer called with non-running/new prev Coro::State, but can only transfer from running or new states");	1301	croak ("Coro::State::transfer called with non-running/new prev Coro::State, but can only transfer from running or new states,");
1314		1302
1315	if (expect_false (next->flags & CF_RUNNING))	1303	if (expect_false (next->flags & CF_RUNNING))
1316	croak ("Coro::State::transfer called with running next Coro::State, but can only transfer to inactive states");	1304	croak ("Coro::State::transfer called with running next Coro::State, but can only transfer to inactive states,");
1317		1305
1318	if (expect_false (next->flags & CF_DESTROYED))	1306	if (expect_false (next->flags & CF_DESTROYED))
1319	croak ("Coro::State::transfer called with destroyed next Coro::State, but can only transfer to inactive states");	1307	croak ("Coro::State::transfer called with destroyed next Coro::State, but can only transfer to inactive states,");
1320		1308
1321	#if !PERL_VERSION_ATLEAST (5,10,0)	1309	#if !PERL_VERSION_ATLEAST (5,10,0)
1322	if (expect_false (PL_lex_state != LEX_NOTPARSING))	1310	if (expect_false (PL_lex_state != LEX_NOTPARSING))
1323	croak ("Coro::State::transfer called while parsing, but this is not supported in your perl version");	1311	croak ("Coro::State::transfer called while parsing, but this is not supported in your perl version,");
1324	#endif	1312	#endif
1325	}	1313	}
1326	}	1314	}
1327		1315
1328	/* always use the TRANSFER macro */	1316	/* always use the TRANSFER macro */
…		…
1332	dSTACKLEVEL;	1320	dSTACKLEVEL;
1333		1321
1334	/* sometimes transfer is only called to set idle_sp */	1322	/* sometimes transfer is only called to set idle_sp */
1335	if (expect_false (!next))	1323	if (expect_false (!next))
1336	{	1324	{
1337	((coro_cctx *)prev)->idle_sp = stacklevel;	1325	((coro_cctx )prev)->idle_sp = (void )stacklevel;
1338	assert (((coro_cctx )prev)->idle_te = PL_top_env); / just for the side-effect when asserts are enabled */	1326	assert (((coro_cctx )prev)->idle_te = PL_top_env); / just for the side-effect when asserts are enabled */
1339	}	1327	}
1340	else if (expect_true (prev != next))	1328	else if (expect_true (prev != next))
1341	{	1329	{
1342	coro_cctx *prev__cctx;	1330	coro_cctx *prev__cctx;
…		…
1369		1357
1370	prev__cctx = prev->cctx;	1358	prev__cctx = prev->cctx;
1371		1359
1372	/* possibly untie and reuse the cctx */	1360	/* possibly untie and reuse the cctx */
1373	if (expect_true (	1361	if (expect_true (
1374	prev__cctx->idle_sp == stacklevel	1362	prev__cctx->idle_sp == (void *)stacklevel
1375	&& !(prev__cctx->flags & CC_TRACE)	1363	&& !(prev__cctx->flags & CC_TRACE)
1376	&& !force_cctx	1364	&& !force_cctx
1377	))	1365	))
1378	{	1366	{
1379	/* I assume that stacklevel is a stronger indicator than PL_top_env changes */	1367	/* I assume that stacklevel is a stronger indicator than PL_top_env changes */
…		…
1435		1423
1436	if (coro->mainstack && coro->mainstack != main_mainstack)	1424	if (coro->mainstack && coro->mainstack != main_mainstack)
1437	{	1425	{
1438	struct coro temp;	1426	struct coro temp;
1439		1427
1440	if (coro->flags & CF_RUNNING)	1428	assert (("FATAL: tried to destroy currently running coroutine (please report)", !(coro->flags & CF_RUNNING)));
1441	croak ("FATAL: tried to destroy currently running coroutine");
1442		1429
1443	save_perl (aTHX_ &temp);	1430	save_perl (aTHX_ &temp);
1444	load_perl (aTHX_ coro);	1431	load_perl (aTHX_ coro);
1445		1432
1446	coro_destruct (aTHX_ coro);	1433	coro_destruct (aTHX_ coro);
…		…
1497	# define MGf_DUP 0	1484	# define MGf_DUP 0
1498	#endif	1485	#endif
1499	};	1486	};
1500		1487
1501	static void	1488	static void
1502	prepare_transfer (pTHX_ struct transfer_args ta, SV prev_sv, SV *next_sv)	1489	prepare_transfer (pTHX_ struct coro_transfer_args ta, SV prev_sv, SV *next_sv)
1503	{	1490	{
1504	ta->prev = SvSTATE (prev_sv);	1491	ta->prev = SvSTATE (prev_sv);
1505	ta->next = SvSTATE (next_sv);	1492	ta->next = SvSTATE (next_sv);
1506	TRANSFER_CHECK (*ta);	1493	TRANSFER_CHECK (*ta);
1507	}	1494	}
1508		1495
1509	static void	1496	static void
1510	api_transfer (pTHX_ SV prev_sv, SV next_sv)	1497	api_transfer (pTHX_ SV prev_sv, SV next_sv)
1511	{	1498	{
1512	struct transfer_args ta;	1499	struct coro_transfer_args ta;
1513		1500
1514	prepare_transfer (aTHX_ &ta, prev_sv, next_sv);	1501	prepare_transfer (aTHX_ &ta, prev_sv, next_sv);
1515	TRANSFER (ta, 1);	1502	TRANSFER (ta, 1);
1516	}	1503	}
1517		1504
…		…
1589	{	1576	{
1590	return !!(SvSTATE (coro_sv)->flags & CF_READY);	1577	return !!(SvSTATE (coro_sv)->flags & CF_READY);
1591	}	1578	}
1592		1579
1593	INLINE void	1580	INLINE void
1594	prepare_schedule (pTHX_ struct transfer_args *ta)	1581	prepare_schedule (pTHX_ struct coro_transfer_args *ta)
1595	{	1582	{
1596	SV prev_sv, next_sv;	1583	SV prev_sv, next_sv;
1597		1584
1598	for (;;)	1585	for (;;)
1599	{	1586	{
…		…
1648	coro_mortal = prev_sv;	1635	coro_mortal = prev_sv;
1649	UNLOCK;	1636	UNLOCK;
1650	}	1637	}
1651		1638
1652	INLINE void	1639	INLINE void
1653	prepare_cede (pTHX_ struct transfer_args *ta)	1640	prepare_cede (pTHX_ struct coro_transfer_args *ta)
1654	{	1641	{
1655	api_ready (aTHX_ coro_current);	1642	api_ready (aTHX_ coro_current);
1656	prepare_schedule (aTHX_ ta);	1643	prepare_schedule (aTHX_ ta);
1657	}	1644	}
1658		1645
1659	static void	1646	INLINE void
1660	prepare_cede_notself (pTHX_ struct transfer_args *ta)	1647	prepare_cede_notself (pTHX_ struct coro_transfer_args *ta)
1661	{	1648	{
1662	SV *prev = SvRV (coro_current);	1649	SV *prev = SvRV (coro_current);
1663		1650
1664	if (coro_nready)	1651	if (coro_nready)
1665	{	1652	{
1666	prepare_schedule (aTHX_ ta);	1653	prepare_schedule (aTHX_ ta);
1667	api_ready (aTHX_ prev);	1654	api_ready (aTHX_ prev);
1668	}	1655	}
1669	else	1656	else
1670	ta->prev = ta->next = SvSTATE (prev);	1657	prepare_nop (aTHX_ ta);
1671	}	1658	}
1672		1659
1673	static void	1660	static void
1674	api_schedule (pTHX)	1661	api_schedule (pTHX)
1675	{	1662	{
1676	struct transfer_args ta;	1663	struct coro_transfer_args ta;
1677		1664
1678	prepare_schedule (aTHX_ &ta);	1665	prepare_schedule (aTHX_ &ta);
1679	TRANSFER (ta, 1);	1666	TRANSFER (ta, 1);
1680	}	1667	}
1681		1668
1682	static int	1669	static int
1683	api_cede (pTHX)	1670	api_cede (pTHX)
1684	{	1671	{
1685	struct transfer_args ta;	1672	struct coro_transfer_args ta;
1686		1673
1687	prepare_cede (aTHX_ &ta);	1674	prepare_cede (aTHX_ &ta);
1688		1675
1689	if (expect_true (ta.prev != ta.next))	1676	if (expect_true (ta.prev != ta.next))
1690	{	1677	{
…		…
1698	static int	1685	static int
1699	api_cede_notself (pTHX)	1686	api_cede_notself (pTHX)
1700	{	1687	{
1701	if (coro_nready)	1688	if (coro_nready)
1702	{	1689	{
1703	struct transfer_args ta;	1690	struct coro_transfer_args ta;
1704		1691
1705	prepare_cede_notself (aTHX_ &ta);	1692	prepare_cede_notself (aTHX_ &ta);
1706	TRANSFER (ta, 1);	1693	TRANSFER (ta, 1);
1707	return 1;	1694	return 1;
1708	}	1695	}
…		…
1718	if (flags & CC_TRACE)	1705	if (flags & CC_TRACE)
1719	{	1706	{
1720	if (!coro->cctx)	1707	if (!coro->cctx)
1721	coro->cctx = cctx_new_run ();	1708	coro->cctx = cctx_new_run ();
1722	else if (!(coro->cctx->flags & CC_TRACE))	1709	else if (!(coro->cctx->flags & CC_TRACE))
1723	croak ("cannot enable tracing on coroutine with custom stack");	1710	croak ("cannot enable tracing on coroutine with custom stack,");
1724		1711
1725	coro->cctx->flags \|= CC_NOREUSE \| (flags & (CC_TRACE \| CC_TRACE_ALL));	1712	coro->cctx->flags \|= CC_NOREUSE \| (flags & (CC_TRACE \| CC_TRACE_ALL));
1726	}	1713	}
1727	else if (coro->cctx && coro->cctx->flags & CC_TRACE)	1714	else if (coro->cctx && coro->cctx->flags & CC_TRACE)
1728	{	1715	{
…		…
1732	PL_runops = RUNOPS_DEFAULT;	1719	PL_runops = RUNOPS_DEFAULT;
1733	else	1720	else
1734	coro->slot->runops = RUNOPS_DEFAULT;	1721	coro->slot->runops = RUNOPS_DEFAULT;
1735	}	1722	}
1736	}	1723	}
1737
1738	#if 0
1739	static int
1740	coro_gensub_free (pTHX_ SV sv, MAGIC mg)
1741	{
1742	AV *padlist;
1743	AV av = (AV )mg->mg_obj;
1744
1745	abort ();
1746
1747	return 0;
1748	}
1749
1750	static MGVTBL coro_gensub_vtbl = {
1751	0, 0, 0, 0,
1752	coro_gensub_free
1753	};
1754	#endif
1755		1724
1756	/*****************************************************************************/	1725	/*****************************************************************************/
1757	/* PerlIO::cede */	1726	/* PerlIO::cede */
1758		1727
1759	typedef struct	1728	typedef struct
…		…
1833	static const CV slf_cv; / for quick consistency check */	1802	static const CV slf_cv; / for quick consistency check */
1834		1803
1835	static UNOP slf_restore; /* restore stack as entersub did, for first-re-run */	1804	static UNOP slf_restore; /* restore stack as entersub did, for first-re-run */
1836	static SV *slf_arg0;	1805	static SV *slf_arg0;
1837	static SV *slf_arg1;	1806	static SV *slf_arg1;
		1807	static SV *slf_arg2;
1838		1808
1839	/* this restores the stack in the case we patched the entersub, to */	1809	/* this restores the stack in the case we patched the entersub, to */
1840	/* recreate the stack frame as perl will on following calls */	1810	/* recreate the stack frame as perl will on following calls */
1841	/* since entersub cleared the stack */	1811	/* since entersub cleared the stack */
1842	static OP *	1812	static OP *
…		…
1847	PUSHMARK (SP);	1817	PUSHMARK (SP);
1848		1818
1849	EXTEND (SP, 3);	1819	EXTEND (SP, 3);
1850	if (slf_arg0) PUSHs (sv_2mortal (slf_arg0));	1820	if (slf_arg0) PUSHs (sv_2mortal (slf_arg0));
1851	if (slf_arg1) PUSHs (sv_2mortal (slf_arg1));	1821	if (slf_arg1) PUSHs (sv_2mortal (slf_arg1));
		1822	if (slf_arg2) PUSHs (sv_2mortal (slf_arg2));
1852	PUSHs ((SV *)CvGV (slf_cv));	1823	PUSHs ((SV *)CvGV (slf_cv));
1853		1824
1854	RETURNOP (slf_restore.op_first);	1825	RETURNOP (slf_restore.op_first);
1855	}	1826	}
1856		1827
1857	#define OPpENTERSUB_SLF 15 /* the part of op_private entersub hopefully doesn't use */	1828	static void
		1829	slf_prepare_set_stacklevel (pTHX_ struct coro_transfer_args *ta)
		1830	{
		1831	prepare_set_stacklevel (ta, (struct coro_cctx *)slf_frame.data);
		1832	}
1858		1833
1859	enum {	1834	static void
1860	CORO_SLF_CUSTOM = 0,	1835	slf_init_set_stacklevel (pTHX_ struct CoroSLF frame, SV *arg, int items)
1861	CORO_SLF_SET_STACKLEVEL = 1,	1836	{
1862	CORO_SLF_TRANSFER = 2	1837	assert (("FATAL: set_stacklevel needs the coro cctx as sole argument", items == 1));
1863	};
1864		1838
1865	/* declare prototype */	1839	frame->prepare = slf_prepare_set_stacklevel;
1866	XS(XS_Coro__State__set_stacklevel);	1840	frame->check = slf_check_nop;
		1841	frame->data = (void *)SvIV (arg [0]);
		1842	}
		1843
		1844	static void
		1845	slf_prepare_transfer (pTHX_ struct coro_transfer_args *ta)
		1846	{
		1847	SV arg = (SV )slf_frame.data;
		1848
		1849	prepare_transfer (aTHX_ ta, arg [0], arg [1]);
		1850	}
		1851
		1852	static void
		1853	slf_init_transfer (pTHX_ struct CoroSLF frame, SV *arg, int items)
		1854	{
		1855	if (items != 2)
		1856	croak ("Coro::State::transfer (prev, next) expects two arguments, not %d,", items);
		1857
		1858	frame->prepare = slf_prepare_transfer;
		1859	frame->check = slf_check_nop;
		1860	frame->data = (void )arg; / let's hope it will stay valid */
		1861	}
		1862
		1863	static void
		1864	slf_init_schedule (pTHX_ struct CoroSLF frame, SV *arg, int items)
		1865	{
		1866	frame->prepare = prepare_schedule;
		1867	frame->check = slf_check_nop;
		1868	}
		1869
		1870	static void
		1871	slf_init_cede (pTHX_ struct CoroSLF frame, SV *arg, int items)
		1872	{
		1873	frame->prepare = prepare_cede;
		1874	frame->check = slf_check_nop;
		1875	}
		1876
		1877	static void
		1878	slf_init_cede_notself (pTHX_ struct CoroSLF frame, SV *arg, int items)
		1879	{
		1880	frame->prepare = prepare_cede_notself;
		1881	frame->check = slf_check_nop;
		1882	}
		1883
		1884	/* we hijack an hopefully unused CV flag for our purposes */
		1885	#define CVf_SLF 0x4000
1867		1886
1868	/*	1887	/*
1869	* these not obviously related functions are all rolled into one	1888	* these not obviously related functions are all rolled into one
1870	* function to increase chances that they all will call transfer with the same	1889	* function to increase chances that they all will call transfer with the same
1871	* stack offset	1890	* stack offset
1872	* SLF stands for "schedule-like-function".	1891	* SLF stands for "schedule-like-function".
1873	*/	1892	*/
1874	static OP *	1893	static OP *
1875	pp_slf (pTHX)	1894	pp_slf (pTHX)
1876	{	1895	{
		1896	I32 checkmark; /* mark SP to see how many elements check has pushed */
		1897
		1898	/* set up the slf frame, unless it has already been set-up */
		1899	/* the latter happens when a new coro has been started */
		1900	/* or when a new cctx was attached to an existing coroutine */
		1901	if (expect_true (!slf_frame.prepare))
		1902	{
		1903	/* first iteration */
1877	dSP;	1904	dSP;
1878	struct transfer_args ta;
1879	SV **arg = PL_stack_base + TOPMARK + 1;	1905	SV **arg = PL_stack_base + TOPMARK + 1;
1880	int items = SP - arg; /* args without function object */	1906	int items = SP - arg; /* args without function object */
1881	int ix = PL_op->op_private & OPpENTERSUB_SLF;	1907	SV gv = sp;
1882	struct CoroSLF *slf = 0;
1883		1908
1884	/* do a quick consistency check on the "function" object, and if it isn't */	1909	/* do a quick consistency check on the "function" object, and if it isn't */
1885	/* for us, divert to the real entersub */	1910	/* for us, divert to the real entersub */
1886	if (SvTYPE (sp) != SVt_PVGV \|\| CvXSUB (GvCV (sp)) != XS_Coro__State__set_stacklevel)	1911	if (SvTYPE (gv) != SVt_PVGV \|\| !(CvFLAGS (GvCV (gv)) & CVf_SLF))
1887	return PL_ppaddr[OP_ENTERSUB](aTHX);	1912	return PL_ppaddr[OP_ENTERSUB](aTHX);
1888		1913
1889	/* pop args */	1914	/* pop args */
1890	SP = PL_stack_base + POPMARK;	1915	SP = PL_stack_base + POPMARK;
1891		1916
1892	if (!(PL_op->op_flags & OPf_STACKED))	1917	if (!(PL_op->op_flags & OPf_STACKED))
1893	{	1918	{
1894	/* ampersand-form of call, use @_ instead of stack */	1919	/* ampersand-form of call, use @_ instead of stack */
1895	AV *av = GvAV (PL_defgv);	1920	AV *av = GvAV (PL_defgv);
1896	arg = AvARRAY (av);	1921	arg = AvARRAY (av);
1897	items = AvFILLp (av) + 1;	1922	items = AvFILLp (av) + 1;
1898	}	1923	}
1899		1924
1900	PUTBACK;	1925	PUTBACK;
1901		1926
1902	if (!ix)	1927	((coro_slf_cb)CvXSUBANY (GvCV (gv)).any_ptr) (aTHX_ &slf_frame, arg, items);
1903	{	1928	}
1904	slf = (struct CoroSLF )CvSTART (GvCV (sp));
1905	ix = slf->prepare (aTHX_ arg, items);
1906	}
1907		1929
1908	switch (ix)	1930	/* now interpret the slf_frame */
1909	{	1931	/* we use a callback system not to make the code needlessly */
1910	case CORO_SLF_SET_STACKLEVEL:	1932	/* complicated, but so we can run multiple perl coros from one cctx */
1911	prepare_set_stacklevel (&ta, (struct coro_cctx *)SvIV (arg [0]));
1912	break;
1913
1914	case CORO_SLF_TRANSFER:
1915	if (items != 2)
1916	croak ("Coro::State::transfer (prev, next) expects two arguments, not %d.", items);
1917
1918	prepare_transfer (aTHX_ &ta, arg [0], arg [1]);
1919	break;
1920
1921	case CORO_SLF_SCHEDULE:
1922	prepare_schedule (aTHX_ &ta);
1923	break;
1924
1925	case CORO_SLF_CEDE:
1926	prepare_cede (aTHX_ &ta);
1927	break;
1928
1929	case CORO_SLF_CEDE_NOTSELF:
1930	prepare_cede_notself (aTHX_ &ta);
1931	break;
1932
1933	default:
1934	abort ();
1935	}
1936		1933
1937	do	1934	do
		1935	{
		1936	struct coro_transfer_args ta;
		1937
		1938	slf_frame.prepare (aTHX_ &ta);
1938	TRANSFER (ta, 0);	1939	TRANSFER (ta, 0);
1939	while (slf && slf->check (aTHX));
1940		1940
1941	SPAGAIN;	1941	checkmark = PL_stack_sp - PL_stack_base;
		1942	}
		1943	while (slf_frame.check (aTHX_ &slf_frame));
1942		1944
		1945	{
		1946	dSP;
		1947	SV **bot = PL_stack_base + checkmark;
		1948	int gimme = GIMME_V;
		1949
		1950	slf_frame.prepare = 0; /* signal pp_slf that we need a new frame */
		1951
		1952	/* make sure we put something on the stack in scalar context */
		1953	if (gimme == G_SCALAR)
		1954	{
		1955	if (sp == bot)
		1956	XPUSHs (&PL_sv_undef);
		1957
		1958	SP = bot + 1;
		1959	}
		1960
1943	PUTBACK;	1961	PUTBACK;
1944	SLF_TAIL;	1962	}
1945	SPAGAIN;
1946	RETURN;
1947	}
1948		1963
1949	static void	1964	return NORMAL;
1950	coro_slf_patch (pTHX_ CV cv, int ix, SV *args, int items)	1965	}
1951	{
1952	assert (("FATAL: SLF call recursion in Coro module (please report)", PL_op->op_ppaddr != pp_slf));
1953		1966
		1967	static void
		1968	api_execute_slf (pTHX_ CV cv, coro_slf_cb init_cb, SV *arg, int items)
		1969	{
1954	assert (("FATAL: SLF call with illegal CV value", CvGV (cv)));	1970	assert (("FATAL: SLF call with illegal CV value", !CvANON (cv)));
		1971
		1972	if (PL_op->op_ppaddr != PL_ppaddr [OP_ENTERSUB]
		1973	&& PL_op->op_ppaddr != pp_slf)
		1974	croak ("FATAL: Coro SLF calls can only be made normally, not via goto or any other means, caught");
		1975
		1976	if (items > 3)
		1977	croak ("Coro only supports up to three arguments to SLF functions currently (not %d), caught", items);
		1978
		1979	CvFLAGS (cv) \|= CVf_SLF;
		1980	CvXSUBANY (cv).any_ptr = (void *)init_cb;
1955	slf_cv = cv;	1981	slf_cv = cv;
1956		1982
1957	/* we patch the op, and then re-run the whole call */	1983	/* we patch the op, and then re-run the whole call */
1958	/* we have to put the same argument on the stack for this to work */	1984	/* we have to put the same argument on the stack for this to work */
1959	/* and this will be done by pp_restore */	1985	/* and this will be done by pp_restore */
1960	slf_restore.op_next = (OP *)&slf_restore;	1986	slf_restore.op_next = (OP *)&slf_restore;
1961	slf_restore.op_type = OP_NULL;	1987	slf_restore.op_type = OP_NULL;
1962	slf_restore.op_ppaddr = pp_restore;	1988	slf_restore.op_ppaddr = pp_restore;
1963	slf_restore.op_first = PL_op;	1989	slf_restore.op_first = PL_op;
1964		1990
1965	slf_arg0 = items > 0 ? SvREFCNT_inc (args [0]) : 0;	1991	slf_arg0 = items > 0 ? SvREFCNT_inc (arg [0]) : 0;
1966	slf_arg1 = items > 1 ? SvREFCNT_inc (args [1]) : 0;	1992	slf_arg1 = items > 1 ? SvREFCNT_inc (arg [1]) : 0;
		1993	slf_arg2 = items > 2 ? SvREFCNT_inc (arg [2]) : 0;
1967		1994
1968	PL_op->op_ppaddr = pp_slf;	1995	PL_op->op_ppaddr = pp_slf;
1969	PL_op->op_private = PL_op->op_private & ~OPpENTERSUB_SLF \| ix; /* we potentially share our private flags with entersub */
1970		1996
1971	PL_op = (OP *)&slf_restore;	1997	PL_op = (OP *)&slf_restore;
1972	}	1998	}
		1999
		2000	/*****************************************************************************/
		2001
		2002	static int
		2003	slf_check_semaphore_down (pTHX_ struct CoroSLF *frame)
		2004	{
		2005	AV av = (AV )frame->data;
		2006	SV *count_sv = AvARRAY (av)[0];
		2007
		2008	if (SvIVX (count_sv) > 0)
		2009	{
		2010	SvIVX (count_sv) = SvIVX (count_sv) - 1;
		2011	return 0;
		2012	}
		2013	else
		2014	{
		2015	int i;
		2016	/* if we were woken up but can't down, we look through the whole */
		2017	/* waiters list and only add us if we aren't in there already */
		2018	/* this avoids some degenerate memory usage cases */
		2019
		2020	for (i = 1; i <= AvFILLp (av); ++i)
		2021	if (AvARRAY (av)[i] == SvRV (coro_current))
		2022	return 1;
		2023
		2024	av_push (av, SvREFCNT_inc (SvRV (coro_current)));
		2025	return 1;
		2026	}
		2027	}
		2028
		2029	static void
		2030	slf_init_semaphore_down (pTHX_ struct CoroSLF frame, SV *arg, int items)
		2031	{
		2032	AV av = (AV )SvRV (arg [0]);
		2033
		2034	if (SvIVX (AvARRAY (av)[0]) > 0)
		2035	{
		2036	frame->data = (void *)av;
		2037	frame->prepare = prepare_nop;
		2038	}
		2039	else
		2040	{
		2041	av_push (av, SvREFCNT_inc (SvRV (coro_current)));
		2042
		2043	frame->data = (void )sv_2mortal (SvREFCNT_inc ((SV )av));
		2044	frame->prepare = prepare_schedule;
		2045	}
		2046
		2047	frame->check = slf_check_semaphore_down;
		2048
		2049	}
		2050
		2051	/*****************************************************************************/
		2052
		2053	#define GENSUB_ARG CvXSUBANY (cv).any_ptr
		2054
		2055	/* create a closure from XS, returns a code reference */
		2056	/* the arg can be accessed via GENSUB_ARG from the callback */
		2057	/* the callback must use dXSARGS/XSRETURN */
		2058	static SV *
		2059	gensub (pTHX_ void (xsub)(pTHX_ CV ), void *arg)
		2060	{
		2061	CV cv = (CV )NEWSV (0, 0);
		2062
		2063	sv_upgrade ((SV *)cv, SVt_PVCV);
		2064
		2065	CvANON_on (cv);
		2066	CvISXSUB_on (cv);
		2067	CvXSUB (cv) = xsub;
		2068	GENSUB_ARG = arg;
		2069
		2070	return newRV_noinc ((SV *)cv);
		2071	}
		2072
		2073	/*****************************************************************************/
1973		2074
1974	MODULE = Coro::State PACKAGE = Coro::State PREFIX = api_	2075	MODULE = Coro::State PACKAGE = Coro::State PREFIX = api_
1975		2076
1976	PROTOTYPES: DISABLE	2077	PROTOTYPES: DISABLE
1977		2078
…		…
2007	main_top_env = PL_top_env;	2108	main_top_env = PL_top_env;
2008		2109
2009	while (main_top_env->je_prev)	2110	while (main_top_env->je_prev)
2010	main_top_env = main_top_env->je_prev;	2111	main_top_env = main_top_env->je_prev;
2011		2112
2012	coroapi.ver = CORO_API_VERSION;	2113	coroapi.ver = CORO_API_VERSION;
2013	coroapi.rev = CORO_API_REVISION;	2114	coroapi.rev = CORO_API_REVISION;
		2115
2014	coroapi.transfer = api_transfer;	2116	coroapi.transfer = api_transfer;
		2117
		2118	coroapi.sv_state = SvSTATE_;
		2119	coroapi.execute_slf = api_execute_slf;
		2120	coroapi.prepare_nop = prepare_nop;
		2121	coroapi.prepare_schedule = prepare_schedule;
		2122	coroapi.prepare_cede = prepare_cede;
		2123	coroapi.prepare_cede_notself = prepare_cede_notself;
2015		2124
2016	{	2125	{
2017	SV **svp = hv_fetch (PL_modglobal, "Time::NVtime", 12, 0);	2126	SV **svp = hv_fetch (PL_modglobal, "Time::NVtime", 12, 0);
2018		2127
2019	if (!svp) croak ("Time::HiRes is required");	2128	if (!svp) croak ("Time::HiRes is required");
…		…
2054	OUTPUT:	2163	OUTPUT:
2055	RETVAL	2164	RETVAL
2056		2165
2057	void	2166	void
2058	_set_stacklevel (...)	2167	_set_stacklevel (...)
2059	ALIAS:	2168	CODE:
2060	_set_stacklevel = CORO_SLF_SET_STACKLEVEL	2169	api_execute_slf (aTHX_ cv, slf_init_set_stacklevel, &ST (0), items);
2061	Coro::State::transfer = CORO_SLF_TRANSFER	2170
2062	Coro::schedule = CORO_SLF_SCHEDULE	2171	void
2063	Coro::cede = CORO_SLF_CEDE	2172	transfer (...)
2064	Coro::cede_notself = CORO_SLF_CEDE_NOTSELF	2173	PROTOTYPE: $$
2065	CODE:	2174	CODE:
2066	coro_slf_patch (aTHX_ cv, ix, &ST (0), items);	2175	api_execute_slf (aTHX_ cv, slf_init_transfer, &ST (0), items);
2067		2176
2068	bool	2177	bool
2069	_destroy (SV *coro_sv)	2178	_destroy (SV *coro_sv)
2070	CODE:	2179	CODE:
2071	RETVAL = coro_state_destroy (aTHX_ SvSTATE (coro_sv));	2180	RETVAL = coro_state_destroy (aTHX_ SvSTATE (coro_sv));
…		…
2078	CODE:	2187	CODE:
2079	_exit (code);	2188	_exit (code);
2080		2189
2081	int	2190	int
2082	cctx_stacksize (int new_stacksize = 0)	2191	cctx_stacksize (int new_stacksize = 0)
		2192	PROTOTYPE: ;$
2083	CODE:	2193	CODE:
2084	RETVAL = cctx_stacksize;	2194	RETVAL = cctx_stacksize;
2085	if (new_stacksize)	2195	if (new_stacksize)
2086	{	2196	{
2087	cctx_stacksize = new_stacksize;	2197	cctx_stacksize = new_stacksize;
…		…
2090	OUTPUT:	2200	OUTPUT:
2091	RETVAL	2201	RETVAL
2092		2202
2093	int	2203	int
2094	cctx_max_idle (int max_idle = 0)	2204	cctx_max_idle (int max_idle = 0)
		2205	PROTOTYPE: ;$
2095	CODE:	2206	CODE:
2096	RETVAL = cctx_max_idle;	2207	RETVAL = cctx_max_idle;
2097	if (max_idle > 1)	2208	if (max_idle > 1)
2098	cctx_max_idle = max_idle;	2209	cctx_max_idle = max_idle;
2099	OUTPUT:	2210	OUTPUT:
2100	RETVAL	2211	RETVAL
2101		2212
2102	int	2213	int
2103	cctx_count ()	2214	cctx_count ()
		2215	PROTOTYPE:
2104	CODE:	2216	CODE:
2105	RETVAL = cctx_count;	2217	RETVAL = cctx_count;
2106	OUTPUT:	2218	OUTPUT:
2107	RETVAL	2219	RETVAL
2108		2220
2109	int	2221	int
2110	cctx_idle ()	2222	cctx_idle ()
		2223	PROTOTYPE:
2111	CODE:	2224	CODE:
2112	RETVAL = cctx_idle;	2225	RETVAL = cctx_idle;
2113	OUTPUT:	2226	OUTPUT:
2114	RETVAL	2227	RETVAL
2115		2228
2116	void	2229	void
2117	list ()	2230	list ()
		2231	PROTOTYPE:
2118	PPCODE:	2232	PPCODE:
2119	{	2233	{
2120	struct coro *coro;	2234	struct coro *coro;
2121	for (coro = coro_first; coro; coro = coro->next)	2235	for (coro = coro_first; coro; coro = coro->next)
2122	if (coro->hv)	2236	if (coro->hv)
…		…
2189	SvREFCNT_dec (self->throw);	2303	SvREFCNT_dec (self->throw);
2190	self->throw = SvOK (throw) ? newSVsv (throw) : 0;	2304	self->throw = SvOK (throw) ? newSVsv (throw) : 0;
2191		2305
2192	void	2306	void
2193	api_trace (SV *coro, int flags = CC_TRACE \| CC_TRACE_SUB)	2307	api_trace (SV *coro, int flags = CC_TRACE \| CC_TRACE_SUB)
		2308	PROTOTYPE: $;$
2194	C_ARGS: aTHX_ coro, flags	2309	C_ARGS: aTHX_ coro, flags
2195		2310
2196	SV *	2311	SV *
2197	has_cctx (Coro::State coro)	2312	has_cctx (Coro::State coro)
2198	PROTOTYPE: $	2313	PROTOTYPE: $
…		…
2223	OUTPUT:	2338	OUTPUT:
2224	RETVAL	2339	RETVAL
2225		2340
2226	void	2341	void
2227	force_cctx ()	2342	force_cctx ()
		2343	PROTOTYPE:
2228	CODE:	2344	CODE:
2229	struct coro *coro = SvSTATE (coro_current);	2345	struct coro *coro = SvSTATE (coro_current);
2230	coro->cctx->idle_sp = 0;	2346	coro->cctx->idle_sp = 0;
2231		2347
2232	void	2348	void
…		…
2234	PROTOTYPE: $	2350	PROTOTYPE: $
2235	ALIAS:	2351	ALIAS:
2236	swap_defav = 1	2352	swap_defav = 1
2237	CODE:	2353	CODE:
2238	if (!self->slot)	2354	if (!self->slot)
2239	croak ("cannot swap state with coroutine that has no saved state");	2355	croak ("cannot swap state with coroutine that has no saved state,");
2240	else	2356	else
2241	{	2357	{
2242	SV src = ix ? (SV )&GvAV (PL_defgv) : &GvSV (PL_defgv);	2358	SV src = ix ? (SV )&GvAV (PL_defgv) : &GvSV (PL_defgv);
2243	SV dst = ix ? (SV )&self->slot->defav : (SV **)&self->slot->defsv;	2359	SV dst = ix ? (SV )&self->slot->defav : (SV **)&self->slot->defsv;
2244		2360
…		…
2284	GCoroAPI = &coroapi;	2400	GCoroAPI = &coroapi;
2285	sv_setiv (sv, (IV)&coroapi);	2401	sv_setiv (sv, (IV)&coroapi);
2286	SvREADONLY_on (sv);	2402	SvREADONLY_on (sv);
2287	}	2403	}
2288	}	2404	}
		2405
		2406	void
		2407	schedule (...)
		2408	CODE:
		2409	api_execute_slf (aTHX_ cv, slf_init_schedule, &ST (0), 0);
		2410
		2411	void
		2412	cede (...)
		2413	CODE:
		2414	api_execute_slf (aTHX_ cv, slf_init_cede, &ST (0), 0);
		2415
		2416	void
		2417	cede_notself (...)
		2418	CODE:
		2419	api_execute_slf (aTHX_ cv, slf_init_cede_notself, &ST (0), 0);
2289		2420
2290	void	2421	void
2291	_set_current (SV *current)	2422	_set_current (SV *current)
2292	PROTOTYPE: $	2423	PROTOTYPE: $
2293	CODE:	2424	CODE:
…		…
2303	coro_readyhook = SvOK (hook) ? newSVsv (hook) : 0;	2434	coro_readyhook = SvOK (hook) ? newSVsv (hook) : 0;
2304	UNLOCK;	2435	UNLOCK;
2305		2436
2306	int	2437	int
2307	prio (Coro::State coro, int newprio = 0)	2438	prio (Coro::State coro, int newprio = 0)
		2439	PROTOTYPE: $;$
2308	ALIAS:	2440	ALIAS:
2309	nice = 1	2441	nice = 1
2310	CODE:	2442	CODE:
2311	{	2443	{
2312	RETVAL = coro->prio;	2444	RETVAL = coro->prio;
…		…
2376	{	2508	{
2377	av_fill (defav, len - 1);	2509	av_fill (defav, len - 1);
2378	for (i = 0; i < len; ++i)	2510	for (i = 0; i < len; ++i)
2379	av_store (defav, i, SvREFCNT_inc_NN (AvARRAY (invoke_av)[i + 1]));	2511	av_store (defav, i, SvREFCNT_inc_NN (AvARRAY (invoke_av)[i + 1]));
2380	}	2512	}
2381
2382	SvREFCNT_dec (invoke);
2383	}	2513	}
2384		2514
2385	void	2515	void
2386	_pool_2 (SV *cb)	2516	_pool_2 (SV *cb)
2387	CODE:	2517	CODE:
…		…
2412	api_trace (aTHX_ coro_current, 0);	2542	api_trace (aTHX_ coro_current, 0);
2413		2543
2414	av_push (av_async_pool, newSVsv (coro_current));	2544	av_push (av_async_pool, newSVsv (coro_current));
2415	}	2545	}
2416		2546
2417	#if 0
2418
2419	void
2420	_generator_call (...)
2421	PROTOTYPE: @
2422	PPCODE:
2423	fprintf (stderr, "call %p\n", CvXSUBANY(cv).any_ptr);
2424	xxxx
2425	abort ();
2426
2427	SV *
2428	gensub (SV *sub, ...)
2429	PROTOTYPE: &;@
2430	CODE:
2431	{
2432	struct coro *coro;
2433	MAGIC *mg;
2434	CV *xcv;
2435	CV ncv = (CV )newSV_type (SVt_PVCV);
2436	int i;
2437
2438	CvGV (ncv) = CvGV (cv);
2439	CvFILE (ncv) = CvFILE (cv);
2440
2441	Newz (0, coro, 1, struct coro);
2442	coro->args = newAV ();
2443	coro->flags = CF_NEW;
2444
2445	av_extend (coro->args, items - 1);
2446	for (i = 1; i < items; i++)
2447	av_push (coro->args, newSVsv (ST (i)));
2448
2449	CvISXSUB_on (ncv);
2450	CvXSUBANY (ncv).any_ptr = (void *)coro;
2451
2452	xcv = GvCV (gv_fetchpv ("Coro::_generator_call", 0, SVt_PVCV));
2453
2454	CvXSUB (ncv) = CvXSUB (xcv);
2455	CvANON_on (ncv);
2456
2457	mg = sv_magicext ((SV )ncv, 0, CORO_MAGIC_type_state, &coro_gensub_vtbl, (char )coro, 0);
2458	RETVAL = newRV_noinc ((SV *)ncv);
2459	}
2460	OUTPUT:
2461	RETVAL
2462
2463	#endif
2464
2465		2547
2466	MODULE = Coro::State PACKAGE = Coro::AIO	2548	MODULE = Coro::State PACKAGE = Coro::AIO
2467		2549
2468	void	2550	void
2469	_get_state (SV *self)	2551	_get_state (SV *self)
		2552	PROTOTYPE: $
2470	PPCODE:	2553	PPCODE:
2471	{	2554	{
2472	AV *defav = GvAV (PL_defgv);	2555	AV *defav = GvAV (PL_defgv);
2473	AV *av = newAV ();	2556	AV *av = newAV ();
2474	int i;	2557	int i;
…		…
2517	MODULE = Coro::State PACKAGE = Coro::AnyEvent	2600	MODULE = Coro::State PACKAGE = Coro::AnyEvent
2518		2601
2519	BOOT:	2602	BOOT:
2520	sv_activity = coro_get_sv (aTHX_ "Coro::AnyEvent::ACTIVITY", TRUE);	2603	sv_activity = coro_get_sv (aTHX_ "Coro::AnyEvent::ACTIVITY", TRUE);
2521		2604
2522	SV *	2605	void
2523	_schedule (...)	2606	_schedule (...)
2524	PROTOTYPE: @
2525	CODE:	2607	CODE:
2526	{	2608	{
2527	static int incede;	2609	static int incede;
2528		2610
2529	api_cede_notself (aTHX);	2611	api_cede_notself (aTHX);
…		…
2548	MODULE = Coro::State PACKAGE = PerlIO::cede	2630	MODULE = Coro::State PACKAGE = PerlIO::cede
2549		2631
2550	BOOT:	2632	BOOT:
2551	PerlIO_define_layer (aTHX_ &PerlIO_cede);	2633	PerlIO_define_layer (aTHX_ &PerlIO_cede);
2552		2634
		2635	MODULE = Coro::State PACKAGE = Coro::Semaphore
		2636
		2637	SV *
		2638	new (SV klass, SV count_ = 0)
		2639	CODE:
		2640	{
		2641	/* a semaphore contains a counter IV in $sem->[0] and any waiters after that */
		2642	AV *av = newAV ();
		2643	av_push (av, newSViv (count_ && SvOK (count_) ? SvIV (count_) : 1));
		2644	RETVAL = sv_bless (newRV_noinc ((SV *)av), GvSTASH (CvGV (cv)));
		2645	}
		2646	OUTPUT:
		2647	RETVAL
		2648
		2649	SV *
		2650	count (SV *self)
		2651	CODE:
		2652	RETVAL = newSVsv (AvARRAY ((AV *)SvRV (self))[0]);
		2653	OUTPUT:
		2654	RETVAL
		2655
		2656	void
		2657	up (SV *self, int adjust = 1)
		2658	ALIAS:
		2659	adjust = 1
		2660	CODE:
		2661	{
		2662	AV av = (AV )SvRV (self);
		2663	SV *count_sv = AvARRAY (av)[0];
		2664	IV count = SvIVX (count_sv);
		2665
		2666	count += ix ? adjust : 1;
		2667	SvIVX (count_sv) = count;
		2668
		2669	/* now wake up as many waiters as possible */
		2670	while (count > 0 && AvFILLp (av) >= count)
		2671	{
		2672	SV *cb;
		2673
		2674	/* swap first two elements so we can shift a waiter */
		2675	AvARRAY (av)[0] = AvARRAY (av)[1];
		2676	AvARRAY (av)[1] = count_sv;
		2677	cb = av_shift (av);
		2678
		2679	if (SvOBJECT (cb))
		2680	api_ready (aTHX_ cb);
		2681	else
		2682	croak ("callbacks not yet supported");
		2683
		2684	SvREFCNT_dec (cb);
		2685	}
		2686	}
		2687
		2688	void
		2689	down (SV *self)
		2690	CODE:
		2691	api_execute_slf (aTHX_ cv, slf_init_semaphore_down, &ST (0), 1);
		2692
		2693	void
		2694	try (SV *self)
		2695	PPCODE:
		2696	{
		2697	AV av = (AV )SvRV (self);
		2698	SV *count_sv = AvARRAY (av)[0];
		2699	IV count = SvIVX (count_sv);
		2700
		2701	if (count > 0)
		2702	{
		2703	--count;
		2704	SvIVX (count_sv) = count;
		2705	XSRETURN_YES;
		2706	}
		2707	else
		2708	XSRETURN_NO;
		2709	}
		2710
		2711	void
		2712	waiters (SV *self)
		2713	CODE:
		2714	{
		2715	AV av = (AV )SvRV (self);
		2716
		2717	if (GIMME_V == G_SCALAR)
		2718	XPUSHs (sv_2mortal (newSVsv (AvARRAY (av)[0])));
		2719	else
		2720	{
		2721	int i;
		2722	EXTEND (SP, AvFILLp (av) + 1 - 1);
		2723	for (i = 1; i <= AvFILLp (av); ++i)
		2724	PUSHs (newSVsv (AvARRAY (av)[i]));
		2725	}
		2726	}
		2727

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Comparing Coro/Coro/State.xs (file contents): Revision 1.270 by root, Fri Nov 14 07:22:11 2008 UTC vs. Revision 1.278 by root, Sun Nov 16 07:09:28 2008 UTC

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Comparing Coro/Coro/State.xs (file contents):
Revision 1.270 by root, Fri Nov 14 07:22:11 2008 UTC vs.
Revision 1.278 by root, Sun Nov 16 07:09:28 2008 UTC