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

Comparing Coro/Coro/State.xs (file contents):
Revision 1.266 by root, Fri Nov 14 03:26:22 2008 UTC vs.
Revision 1.278 by root, Sun Nov 16 07:09:28 2008 UTC

…		…
116	# define CORO_PREFER_PERL_FUNCTIONS 0	116	# define CORO_PREFER_PERL_FUNCTIONS 0
117	#endif	117	#endif
118		118
119	/* The next macros try to return the current stack pointer, in an as	119	/* The next macros try to return the current stack pointer, in an as
120	* portable way as possible. */	120	* portable way as possible. */
121	#define dSTACKLEVEL volatile char stacklevel	121	#if __GNUC__ >= 4
122	#define STACKLEVEL ((void *)&stacklevel)	122	# define dSTACKLEVEL void *stacklevel = __builtin_frame_address (0)
		123	#else
		124	# define dSTACKLEVEL volatile void stacklevel = (volatile void )&stacklevel
		125	#endif
123		126
124	#define IN_DESTRUCT (PL_main_cv == Nullcv)	127	#define IN_DESTRUCT (PL_main_cv == Nullcv)
125		128
126	#if __GNUC__ >= 3	129	#if __GNUC__ >= 3
127	# define attribute(x) __attribute__(x)	130	# define attribute(x) __attribute__(x)
…		…
180	static JMPENV *main_top_env;	183	static JMPENV *main_top_env;
181	static HV coro_state_stash, coro_stash;	184	static HV coro_state_stash, coro_stash;
182	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 */
183	static volatile struct coro *transfer_next;	186	static volatile struct coro *transfer_next;
184		187
185	struct transfer_args
186	{
187	struct coro prev, next;
188	};
189
190	static GV irsgv; / $/ */	188	static GV irsgv; / $/ */
191	static GV stdoutgv; / STDOUT /	189	static GV stdoutgv; / STDOUT /
192	static SV *rv_diehook;	190	static SV *rv_diehook;
193	static SV *rv_warnhook;	191	static SV *rv_warnhook;
194	static HV hv_sig; / %SIG */	192	static HV hv_sig; / %SIG */
…		…
212	CC_TRACE_LINE = 0x10, /* trace each statement */	210	CC_TRACE_LINE = 0x10, /* trace each statement */
213	CC_TRACE_ALL = CC_TRACE_SUB \| CC_TRACE_LINE,	211	CC_TRACE_ALL = CC_TRACE_SUB \| CC_TRACE_LINE,
214	};	212	};
215		213
216	/* this is a structure representing a c-level coroutine */	214	/* this is a structure representing a c-level coroutine */
217	typedef struct coro_cctx {	215	typedef struct coro_cctx
		216	{
218	struct coro_cctx *next;	217	struct coro_cctx *next;
219		218
220	/* the stack */	219	/* the stack */
221	void *sptr;	220	void *sptr;
222	size_t ssize;	221	size_t ssize;
…		…
240	CF_NEW = 0x0004, /* has never been switched to */	239	CF_NEW = 0x0004, /* has never been switched to */
241	CF_DESTROYED = 0x0008, /* coroutine data has been freed */	240	CF_DESTROYED = 0x0008, /* coroutine data has been freed */
242	};	241	};
243		242
244	/* 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 */
245	typedef struct {	244	typedef struct
		245	{
246	SV *defsv;	246	SV *defsv;
247	AV *defav;	247	AV *defav;
248	SV *errsv;	248	SV *errsv;
249	SV *irsgv;	249	SV *irsgv;
250	#define VAR(name,type) type name;	250	#define VAR(name,type) type name;
…		…
254		254
255	#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))
256		256
257	/* this is a structure representing a perl-level coroutine */	257	/* this is a structure representing a perl-level coroutine */
258	struct coro {	258	struct coro {
259	/* the c coroutine allocated to this perl coroutine, if any */	259	/* the C coroutine allocated to this perl coroutine, if any */
260	coro_cctx *cctx;	260	coro_cctx *cctx;
261		261
262	/* process data */	262	/* process data */
		263	struct CoroSLF slf_frame; /* saved slf frame */
263	AV *mainstack;	264	AV *mainstack;
264	perl_slots slot; / basically the saved sp */	265	perl_slots slot; / basically the saved sp */
265		266
266	AV args; / data associated with this coroutine (initial args) */	267	AV args; / data associated with this coroutine (initial args) */
267	int refcnt; /* coroutines are refcounted, yes */	268	int refcnt; /* coroutines are refcounted, yes */
…		…
282	struct coro next, prev;	283	struct coro next, prev;
283	};	284	};
284		285
285	typedef struct coro *Coro__State;	286	typedef struct coro *Coro__State;
286	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 */
287		290
288	/ Coro ******************************************************************/	291	/ Coro ******************************************************************/
289		292
290	#define PRIO_MAX 3	293	#define PRIO_MAX 3
291	#define PRIO_HIGH 1	294	#define PRIO_HIGH 1
…		…
296		299
297	/* for Coro.pm */	300	/* for Coro.pm */
298	static SV *coro_current;	301	static SV *coro_current;
299	static SV *coro_readyhook;	302	static SV *coro_readyhook;
300	static AV *coro_ready [PRIO_MAX - PRIO_MIN + 1];	303	static AV *coro_ready [PRIO_MAX - PRIO_MIN + 1];
301	static int coro_nready;
302	static struct coro *coro_first;	304	static struct coro *coro_first;
		305	#define coro_nready coroapi.nready
303		306
304	/ lowlevel stuff ********************************************************/	307	/ lowlevel stuff ********************************************************/
305		308
306	static SV *	309	static SV *
307	coro_get_sv (pTHX_ const char *name, int create)	310	coro_get_sv (pTHX_ const char *name, int create)
…		…
511	CvPADLIST (cv) = (AV *)POPs;	514	CvPADLIST (cv) = (AV *)POPs;
512	}	515	}
513		516
514	PUTBACK;	517	PUTBACK;
515	}	518	}
		519
		520	slf_frame = c->slf_frame;
516	}	521	}
517		522
518	static void	523	static void
519	save_perl (pTHX_ Coro__State c)	524	save_perl (pTHX_ Coro__State c)
520	{	525	{
		526	c->slf_frame = slf_frame;
		527
521	{	528	{
522	dSP;	529	dSP;
523	I32 cxix = cxstack_ix;	530	I32 cxix = cxstack_ix;
524	PERL_CONTEXT *ccstk = cxstack;	531	PERL_CONTEXT *ccstk = cxstack;
525	PERL_SI *top_si = PL_curstackinfo;	532	PERL_SI *top_si = PL_curstackinfo;
…		…
592	#undef VAR	599	#undef VAR
593	}	600	}
594	}	601	}
595		602
596	/*	603	/*
597	* allocate various perl stacks. This is an exact copy	604	* allocate various perl stacks. This is almost an exact copy
598	* of perl.c:init_stacks, except that it uses less memory	605	* of perl.c:init_stacks, except that it uses less memory
599	* on the (sometimes correct) assumption that coroutines do	606	* on the (sometimes correct) assumption that coroutines do
600	* not usually need a lot of stackspace.	607	* not usually need a lot of stackspace.
601	*/	608	*/
602	#if CORO_PREFER_PERL_FUNCTIONS	609	#if CORO_PREFER_PERL_FUNCTIONS
…		…
709	#endif	716	#endif
710	}	717	}
711	}	718	}
712		719
713	return rss;	720	return rss;
714	}
715
716	/ set stacklevel support ************************************************/
717
718	/* we sometimes need to create the effect of pp_set_stacklevel calling us */
719	#define SSL_HEAD (void)0
720	/* we somtimes need to create the effect of leaving via pp_set_stacklevel */
721	#define SSL_TAIL set_stacklevel_tail (aTHX)
722
723	INLINE void
724	set_stacklevel_tail (pTHX)
725	{
726	dSP;
727	SV **bot = SP;
728
729	int gimme = GIMME_V;
730
731	/* make sure we put something on the stack in scalar context */
732	if (gimme == G_SCALAR)
733	{
734	if (sp == bot)
735	XPUSHs (&PL_sv_undef);
736
737	SP = bot + 1;
738	}
739
740	PUTBACK;
741	}	721	}
742		722
743	/ coroutine stack handling **********************************************/	723	/ coroutine stack handling **********************************************/
744		724
745	static int (orig_sigelem_get) (pTHX_ SV sv, MAGIC *mg);	725	static int (orig_sigelem_get) (pTHX_ SV sv, MAGIC *mg);
…		…
831		811
832	return orig_sigelem_set ? orig_sigelem_set (aTHX_ sv, mg) : 0;	812	return orig_sigelem_set ? orig_sigelem_set (aTHX_ sv, mg) : 0;
833	}	813	}
834		814
835	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
836	coro_setup (pTHX_ struct coro *coro)	829	coro_setup (pTHX_ struct coro *coro)
837	{	830	{
838	/*	831	/*
839	* emulate part of the perl startup here.	832	* emulate part of the perl startup here.
840	*/	833	*/
…		…
879	PL_op = PL_ppaddr[OP_ENTERSUB](aTHX);	872	PL_op = PL_ppaddr[OP_ENTERSUB](aTHX);
880	SPAGAIN;	873	SPAGAIN;
881	}	874	}
882		875
883	/* 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
884	* 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.
885	* so we have to emulate entering pp_set_stacklevel here.
886	*/	878	*/
887	SSL_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 */
888	}	881	}
889		882
890	static void	883	static void
891	coro_destruct (pTHX_ struct coro *coro)	884	coro_destruct (pTHX_ struct coro *coro)
892	{	885	{
…		…
1056	TAINT_NOT;	1049	TAINT_NOT;
1057	return 0;	1050	return 0;
1058	}	1051	}
1059		1052
1060	static void	1053	static void
1061	prepare_set_stacklevel (struct transfer_args ta, struct coro_cctx cctx)	1054	prepare_set_stacklevel (struct coro_transfer_args ta, struct coro_cctx cctx)
1062	{	1055	{
1063	ta->prev = (struct coro *)cctx;	1056	ta->prev = (struct coro *)cctx;
1064	ta->next = 0;	1057	ta->next = 0;
1065	}	1058	}
1066		1059
…		…
1126	# endif	1119	# endif
1127	#endif	1120	#endif
1128	{	1121	{
1129	dTHX;	1122	dTHX;
1130		1123
1131	/* we are the alternative tail to pp_set_stacklevel */	1124	/* normally we would need to skip the entersub here */
1132	/* so do the same things here */	1125	/* not doing so will re-execute it, which is exactly what we want */
1133	SSL_TAIL;
1134
1135	/* we now skip the op that did lead to transfer() */
1136	PL_op = PL_op->op_next;	1126	/* PL_nop = PL_nop->op_next */
1137		1127
1138	/* inject a fake subroutine call to cctx_init */	1128	/* inject a fake subroutine call to cctx_init */
1139	cctx_prepare (aTHX_ (coro_cctx *)arg);	1129	cctx_prepare (aTHX_ (coro_cctx *)arg);
1140		1130
1141	/* 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 */
1142	transfer_tail (aTHX);	1133	transfer_tail (aTHX);
1143		1134
1144	/* 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 */
1145	PL_restartop = PL_op;	1136	PL_restartop = PL_op;
1146	perl_run (PL_curinterp);	1137	perl_run (PL_curinterp);
…		…
1305	transfer_check (pTHX_ struct coro prev, struct coro next)	1296	transfer_check (pTHX_ struct coro prev, struct coro next)
1306	{	1297	{
1307	if (expect_true (prev != next))	1298	if (expect_true (prev != next))
1308	{	1299	{
1309	if (expect_false (!(prev->flags & (CF_RUNNING \| CF_NEW))))	1300	if (expect_false (!(prev->flags & (CF_RUNNING \| CF_NEW))))
1310	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,");
1311		1302
1312	if (expect_false (next->flags & CF_RUNNING))	1303	if (expect_false (next->flags & CF_RUNNING))
1313	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,");
1314		1305
1315	if (expect_false (next->flags & CF_DESTROYED))	1306	if (expect_false (next->flags & CF_DESTROYED))
1316	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,");
1317		1308
1318	#if !PERL_VERSION_ATLEAST (5,10,0)	1309	#if !PERL_VERSION_ATLEAST (5,10,0)
1319	if (expect_false (PL_lex_state != LEX_NOTPARSING))	1310	if (expect_false (PL_lex_state != LEX_NOTPARSING))
1320	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,");
1321	#endif	1312	#endif
1322	}	1313	}
1323	}	1314	}
1324		1315
1325	/* always use the TRANSFER macro */	1316	/* always use the TRANSFER macro */
…		…
1329	dSTACKLEVEL;	1320	dSTACKLEVEL;
1330		1321
1331	/* sometimes transfer is only called to set idle_sp */	1322	/* sometimes transfer is only called to set idle_sp */
1332	if (expect_false (!next))	1323	if (expect_false (!next))
1333	{	1324	{
1334	((coro_cctx *)prev)->idle_sp = STACKLEVEL;	1325	((coro_cctx )prev)->idle_sp = (void )stacklevel;
1335	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 */
1336	}	1327	}
1337	else if (expect_true (prev != next))	1328	else if (expect_true (prev != next))
1338	{	1329	{
1339	coro_cctx *prev__cctx;	1330	coro_cctx *prev__cctx;
…		…
1366		1357
1367	prev__cctx = prev->cctx;	1358	prev__cctx = prev->cctx;
1368		1359
1369	/* possibly untie and reuse the cctx */	1360	/* possibly untie and reuse the cctx */
1370	if (expect_true (	1361	if (expect_true (
1371	prev__cctx->idle_sp == STACKLEVEL	1362	prev__cctx->idle_sp == (void *)stacklevel
1372	&& !(prev__cctx->flags & CC_TRACE)	1363	&& !(prev__cctx->flags & CC_TRACE)
1373	&& !force_cctx	1364	&& !force_cctx
1374	))	1365	))
1375	{	1366	{
1376	/* 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 */
1377	assert (("FATAL: current top_env must equal previous top_env in Coro (please report)", PL_top_env == prev__cctx->idle_te));	1368	assert (("FATAL: current top_env must equal previous top_env in Coro (please report)", PL_top_env == prev__cctx->idle_te));
1378		1369
1379	prev->cctx = 0;	1370	prev->cctx = 0;
1380		1371
1381	/* if the cctx is about to be destroyed we need to make sure we won't see it in cctx_get */	1372	/* if the cctx is about to be destroyed we need to make sure we won't see it in cctx_get */
…		…
1432		1423
1433	if (coro->mainstack && coro->mainstack != main_mainstack)	1424	if (coro->mainstack && coro->mainstack != main_mainstack)
1434	{	1425	{
1435	struct coro temp;	1426	struct coro temp;
1436		1427
1437	if (coro->flags & CF_RUNNING)	1428	assert (("FATAL: tried to destroy currently running coroutine (please report)", !(coro->flags & CF_RUNNING)));
1438	croak ("FATAL: tried to destroy currently running coroutine");
1439		1429
1440	save_perl (aTHX_ &temp);	1430	save_perl (aTHX_ &temp);
1441	load_perl (aTHX_ coro);	1431	load_perl (aTHX_ coro);
1442		1432
1443	coro_destruct (aTHX_ coro);	1433	coro_destruct (aTHX_ coro);
…		…
1494	# define MGf_DUP 0	1484	# define MGf_DUP 0
1495	#endif	1485	#endif
1496	};	1486	};
1497		1487
1498	static void	1488	static void
1499	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)
1500	{	1490	{
1501	ta->prev = SvSTATE (prev_sv);	1491	ta->prev = SvSTATE (prev_sv);
1502	ta->next = SvSTATE (next_sv);	1492	ta->next = SvSTATE (next_sv);
1503	TRANSFER_CHECK (*ta);	1493	TRANSFER_CHECK (*ta);
1504	}	1494	}
1505		1495
1506	static void	1496	static void
1507	api_transfer (SV prev_sv, SV next_sv)	1497	api_transfer (pTHX_ SV prev_sv, SV next_sv)
1508	{	1498	{
1509	dTHX;
1510	struct transfer_args ta;	1499	struct coro_transfer_args ta;
1511		1500
1512	prepare_transfer (aTHX_ &ta, prev_sv, next_sv);	1501	prepare_transfer (aTHX_ &ta, prev_sv, next_sv);
1513	TRANSFER (ta, 1);	1502	TRANSFER (ta, 1);
1514	}	1503	}
1515		1504
…		…
1532		1521
1533	return 0;	1522	return 0;
1534	}	1523	}
1535		1524
1536	static int	1525	static int
1537	api_ready (SV *coro_sv)	1526	api_ready (pTHX_ SV *coro_sv)
1538	{	1527	{
1539	dTHX;
1540	struct coro *coro;	1528	struct coro *coro;
1541	SV *sv_hook;	1529	SV *sv_hook;
1542	void (*xs_hook)(void);	1530	void (*xs_hook)(void);
1543		1531
1544	if (SvROK (coro_sv))	1532	if (SvROK (coro_sv))
…		…
1582		1570
1583	return 1;	1571	return 1;
1584	}	1572	}
1585		1573
1586	static int	1574	static int
1587	api_is_ready (SV *coro_sv)	1575	api_is_ready (pTHX_ SV *coro_sv)
1588	{	1576	{
1589	dTHX;
1590
1591	return !!(SvSTATE (coro_sv)->flags & CF_READY);	1577	return !!(SvSTATE (coro_sv)->flags & CF_READY);
1592	}	1578	}
1593		1579
1594	INLINE void	1580	INLINE void
1595	prepare_schedule (pTHX_ struct transfer_args *ta)	1581	prepare_schedule (pTHX_ struct coro_transfer_args *ta)
1596	{	1582	{
1597	SV prev_sv, next_sv;	1583	SV prev_sv, next_sv;
1598		1584
1599	for (;;)	1585	for (;;)
1600	{	1586	{
…		…
1649	coro_mortal = prev_sv;	1635	coro_mortal = prev_sv;
1650	UNLOCK;	1636	UNLOCK;
1651	}	1637	}
1652		1638
1653	INLINE void	1639	INLINE void
1654	prepare_cede (pTHX_ struct transfer_args *ta)	1640	prepare_cede (pTHX_ struct coro_transfer_args *ta)
1655	{	1641	{
1656	api_ready (coro_current);	1642	api_ready (aTHX_ coro_current);
1657	prepare_schedule (aTHX_ ta);	1643	prepare_schedule (aTHX_ ta);
1658	}	1644	}
1659		1645
		1646	INLINE void
		1647	prepare_cede_notself (pTHX_ struct coro_transfer_args *ta)
		1648	{
		1649	SV *prev = SvRV (coro_current);
		1650
		1651	if (coro_nready)
		1652	{
		1653	prepare_schedule (aTHX_ ta);
		1654	api_ready (aTHX_ prev);
		1655	}
		1656	else
		1657	prepare_nop (aTHX_ ta);
		1658	}
		1659
		1660	static void
		1661	api_schedule (pTHX)
		1662	{
		1663	struct coro_transfer_args ta;
		1664
		1665	prepare_schedule (aTHX_ &ta);
		1666	TRANSFER (ta, 1);
		1667	}
		1668
1660	static int	1669	static int
1661	prepare_cede_notself (pTHX_ struct transfer_args *ta)	1670	api_cede (pTHX)
1662	{	1671	{
1663	if (coro_nready)	1672	struct coro_transfer_args ta;
1664	{	1673
1665	SV *prev = SvRV (coro_current);
1666	prepare_schedule (aTHX_ ta);	1674	prepare_cede (aTHX_ &ta);
1667	api_ready (prev);	1675
		1676	if (expect_true (ta.prev != ta.next))
		1677	{
		1678	TRANSFER (ta, 1);
1668	return 1;	1679	return 1;
1669	}	1680	}
1670	else	1681	else
1671	return 0;	1682	return 0;
1672	}	1683	}
1673		1684
1674	static void
1675	api_schedule (void)
1676	{
1677	dTHX;
1678	struct transfer_args ta;
1679
1680	prepare_schedule (aTHX_ &ta);
1681	TRANSFER (ta, 1);
1682	}
1683
1684	static int	1685	static int
1685	api_cede (void)	1686	api_cede_notself (pTHX)
1686	{	1687	{
1687	dTHX;	1688	if (coro_nready)
		1689	{
1688	struct transfer_args ta;	1690	struct coro_transfer_args ta;
1689		1691
1690	prepare_cede (aTHX_ &ta);	1692	prepare_cede_notself (aTHX_ &ta);
1691
1692	if (expect_true (ta.prev != ta.next))
1693	{
1694	TRANSFER (ta, 1);	1693	TRANSFER (ta, 1);
1695	return 1;	1694	return 1;
1696	}	1695	}
1697	else	1696	else
1698	return 0;	1697	return 0;
1699	}	1698	}
1700		1699
1701	static int	1700	static void
1702	api_cede_notself (void)
1703	{
1704	dTHX;
1705	struct transfer_args ta;
1706
1707	if (prepare_cede_notself (aTHX_ &ta))
1708	{
1709	TRANSFER (ta, 1);
1710	return 1;
1711	}
1712	else
1713	return 0;
1714	}
1715
1716	static void
1717	api_trace (SV *coro_sv, int flags)	1701	api_trace (pTHX_ SV *coro_sv, int flags)
1718	{	1702	{
1719	dTHX;
1720	struct coro *coro = SvSTATE (coro_sv);	1703	struct coro *coro = SvSTATE (coro_sv);
1721		1704
1722	if (flags & CC_TRACE)	1705	if (flags & CC_TRACE)
1723	{	1706	{
1724	if (!coro->cctx)	1707	if (!coro->cctx)
1725	coro->cctx = cctx_new_run ();	1708	coro->cctx = cctx_new_run ();
1726	else if (!(coro->cctx->flags & CC_TRACE))	1709	else if (!(coro->cctx->flags & CC_TRACE))
1727	croak ("cannot enable tracing on coroutine with custom stack");	1710	croak ("cannot enable tracing on coroutine with custom stack,");
1728		1711
1729	coro->cctx->flags \|= CC_NOREUSE \| (flags & (CC_TRACE \| CC_TRACE_ALL));	1712	coro->cctx->flags \|= CC_NOREUSE \| (flags & (CC_TRACE \| CC_TRACE_ALL));
1730	}	1713	}
1731	else if (coro->cctx && coro->cctx->flags & CC_TRACE)	1714	else if (coro->cctx && coro->cctx->flags & CC_TRACE)
1732	{	1715	{
…		…
1737	else	1720	else
1738	coro->slot->runops = RUNOPS_DEFAULT;	1721	coro->slot->runops = RUNOPS_DEFAULT;
1739	}	1722	}
1740	}	1723	}
1741		1724
1742	#if 0
1743	static int
1744	coro_gensub_free (pTHX_ SV sv, MAGIC mg)
1745	{
1746	AV *padlist;
1747	AV av = (AV )mg->mg_obj;
1748
1749	abort ();
1750
1751	return 0;
1752	}
1753
1754	static MGVTBL coro_gensub_vtbl = {
1755	0, 0, 0, 0,
1756	coro_gensub_free
1757	};
1758	#endif
1759
1760	/*****************************************************************************/	1725	/*****************************************************************************/
1761	/* PerlIO::cede */	1726	/* PerlIO::cede */
1762		1727
1763	typedef struct	1728	typedef struct
1764	{	1729	{
…		…
1791	PerlIOCede *self = PerlIOSelf (f, PerlIOCede);	1756	PerlIOCede *self = PerlIOSelf (f, PerlIOCede);
1792	double now = nvtime ();	1757	double now = nvtime ();
1793		1758
1794	if (now >= self->next)	1759	if (now >= self->next)
1795	{	1760	{
1796	api_cede ();	1761	api_cede (aTHX);
1797	self->next = now + self->every;	1762	self->next = now + self->every;
1798	}	1763	}
1799		1764
1800	return PerlIOBuf_flush (aTHX_ f);	1765	return PerlIOBuf_flush (aTHX_ f);
1801	}	1766	}
…		…
1832	PerlIOBuf_set_ptrcnt,	1797	PerlIOBuf_set_ptrcnt,
1833	};	1798	};
1834		1799
1835	/*****************************************************************************/	1800	/*****************************************************************************/
1836		1801
1837	static const CV ssl_cv; / for quick consistency check */	1802	static const CV slf_cv; / for quick consistency check */
1838		1803
1839	static UNOP ssl_restore; /* restore stack as entersub did, for first-re-run */	1804	static UNOP slf_restore; /* restore stack as entersub did, for first-re-run */
1840	static SV *ssl_arg0;	1805	static SV *slf_arg0;
1841	static SV *ssl_arg1;	1806	static SV *slf_arg1;
		1807	static SV *slf_arg2;
1842		1808
1843	/* 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 */
1844	/* recreate the stack frame as perl will on following calls */	1810	/* recreate the stack frame as perl will on following calls */
1845	/* since entersub cleared the stack */	1811	/* since entersub cleared the stack */
1846	static OP *	1812	static OP *
…		…
1849	dSP;	1815	dSP;
1850		1816
1851	PUSHMARK (SP);	1817	PUSHMARK (SP);
1852		1818
1853	EXTEND (SP, 3);	1819	EXTEND (SP, 3);
1854	if (ssl_arg0) PUSHs (sv_2mortal (ssl_arg0)), ssl_arg0 = 0;	1820	if (slf_arg0) PUSHs (sv_2mortal (slf_arg0));
1855	if (ssl_arg1) PUSHs (sv_2mortal (ssl_arg1)), ssl_arg1 = 0;	1821	if (slf_arg1) PUSHs (sv_2mortal (slf_arg1));
		1822	if (slf_arg2) PUSHs (sv_2mortal (slf_arg2));
1856	PUSHs ((SV *)CvGV (ssl_cv));	1823	PUSHs ((SV *)CvGV (slf_cv));
1857		1824
1858	RETURNOP (ssl_restore.op_first);	1825	RETURNOP (slf_restore.op_first);
1859	}	1826	}
1860		1827
1861	/* declare prototype */	1828	static void
1862	XS(XS_Coro__State__set_stacklevel);	1829	slf_prepare_set_stacklevel (pTHX_ struct coro_transfer_args *ta)
		1830	{
		1831	prepare_set_stacklevel (ta, (struct coro_cctx *)slf_frame.data);
		1832	}
1863		1833
1864	#define OPpENTERSUB_SSL 15	1834	static void
		1835	slf_init_set_stacklevel (pTHX_ struct CoroSLF frame, SV *arg, int items)
		1836	{
		1837	assert (("FATAL: set_stacklevel needs the coro cctx as sole argument", items == 1));
1865		1838
		1839	frame->prepare = slf_prepare_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
		1886
		1887	/*
		1888	* these not obviously related functions are all rolled into one
		1889	* function to increase chances that they all will call transfer with the same
		1890	* stack offset
		1891	* SLF stands for "schedule-like-function".
		1892	*/
1866	static OP *	1893	static OP *
1867	pp_set_stacklevel (pTHX)	1894	pp_slf (pTHX)
1868	{	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 */
1869	dSP;	1904	dSP;
1870	struct transfer_args ta;
1871	SV **arg = PL_stack_base + TOPMARK + 1;	1905	SV **arg = PL_stack_base + TOPMARK + 1;
1872	int items = SP - arg; /* args without function object */	1906	int items = SP - arg; /* args without function object */
		1907	SV gv = sp;
1873		1908
1874	/* 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 */
1875	/* for us, divert to the real entersub */	1910	/* for us, divert to the real entersub */
1876	if (SvTYPE (sp) != SVt_PVGV \|\| CvXSUB (GvCV (sp)) != XS_Coro__State__set_stacklevel)	1911	if (SvTYPE (gv) != SVt_PVGV \|\| !(CvFLAGS (GvCV (gv)) & CVf_SLF))
1877	return PL_ppaddr[OP_ENTERSUB](aTHX);	1912	return PL_ppaddr[OP_ENTERSUB](aTHX);
1878		1913
1879	/* pop args */	1914	/* pop args */
1880	SP = PL_stack_base + POPMARK;	1915	SP = PL_stack_base + POPMARK;
1881		1916
1882	if (!(PL_op->op_flags & OPf_STACKED))	1917	if (!(PL_op->op_flags & OPf_STACKED))
1883	{	1918	{
1884	/* ampersand-form of call, use @_ instead of stack */	1919	/* ampersand-form of call, use @_ instead of stack */
1885	AV *av = GvAV (PL_defgv);	1920	AV *av = GvAV (PL_defgv);
1886	arg = AvARRAY (av);	1921	arg = AvARRAY (av);
1887	items = AvFILLp (av) + 1;	1922	items = AvFILLp (av) + 1;
		1923	}
		1924
		1925	PUTBACK;
		1926
		1927	((coro_slf_cb)CvXSUBANY (GvCV (gv)).any_ptr) (aTHX_ &slf_frame, arg, items);
		1928	}
		1929
		1930	/* now interpret the slf_frame */
		1931	/* we use a callback system not to make the code needlessly */
		1932	/* complicated, but so we can run multiple perl coros from one cctx */
		1933
		1934	do
		1935	{
		1936	struct coro_transfer_args ta;
		1937
		1938	slf_frame.prepare (aTHX_ &ta);
		1939	TRANSFER (ta, 0);
		1940
		1941	checkmark = PL_stack_sp - PL_stack_base;
		1942	}
		1943	while (slf_frame.check (aTHX_ &slf_frame));
		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;
1888	}	1959	}
1889		1960
1890	PUTBACK;	1961	PUTBACK;
1891	switch (PL_op->op_private & OPpENTERSUB_SSL)	1962	}
1892	{
1893	case 0:
1894	prepare_set_stacklevel (&ta, (struct coro_cctx *)SvIV (arg [0]));
1895	break;
1896		1963
1897	case 1:	1964	return NORMAL;
1898	if (items != 2)	1965	}
1899	croak ("Coro::State::transfer (prev, next) expects two arguments, not %d.", items);
1900		1966
1901	prepare_transfer (aTHX_ &ta, arg [0], arg [1]);	1967	static void
1902	break;	1968	api_execute_slf (pTHX_ CV cv, coro_slf_cb init_cb, SV *arg, int items)
		1969	{
		1970	assert (("FATAL: SLF call with illegal CV value", !CvANON (cv)));
1903		1971
1904	case 2:	1972	if (PL_op->op_ppaddr != PL_ppaddr [OP_ENTERSUB]
1905	prepare_schedule (aTHX_ &ta);	1973	&& PL_op->op_ppaddr != pp_slf)
1906	break;	1974	croak ("FATAL: Coro SLF calls can only be made normally, not via goto or any other means, caught");
1907		1975
1908	case 3:	1976	if (items > 3)
1909	prepare_cede (aTHX_ &ta);	1977	croak ("Coro only supports up to three arguments to SLF functions currently (not %d), caught", items);
1910	break;
1911		1978
1912	case 4:	1979	CvFLAGS (cv) \|= CVf_SLF;
1913	if (!prepare_cede_notself (aTHX_ &ta))	1980	CvXSUBANY (cv).any_ptr = (void *)init_cb;
1914	goto skip;	1981	slf_cv = cv;
1915		1982
1916	break;	1983	/* we patch the op, and then re-run the whole call */
		1984	/* we have to put the same argument on the stack for this to work */
		1985	/* and this will be done by pp_restore */
		1986	slf_restore.op_next = (OP *)&slf_restore;
		1987	slf_restore.op_type = OP_NULL;
		1988	slf_restore.op_ppaddr = pp_restore;
		1989	slf_restore.op_first = PL_op;
		1990
		1991	slf_arg0 = items > 0 ? SvREFCNT_inc (arg [0]) : 0;
		1992	slf_arg1 = items > 1 ? SvREFCNT_inc (arg [1]) : 0;
		1993	slf_arg2 = items > 2 ? SvREFCNT_inc (arg [2]) : 0;
		1994
		1995	PL_op->op_ppaddr = pp_slf;
		1996
		1997	PL_op = (OP *)&slf_restore;
		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)
1917	}	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 */
1918		2019
1919	TRANSFER (ta, 0);	2020	for (i = 1; i <= AvFILLp (av); ++i)
1920	SPAGAIN;	2021	if (AvARRAY (av)[i] == SvRV (coro_current))
		2022	return 1;
1921		2023
1922	skip:	2024	av_push (av, SvREFCNT_inc (SvRV (coro_current)));
1923	PUTBACK;	2025	return 1;
1924	SSL_TAIL;	2026	}
1925	SPAGAIN;
1926	RETURN;
1927	}	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	/*****************************************************************************/
1928		2074
1929	MODULE = Coro::State PACKAGE = Coro::State PREFIX = api_	2075	MODULE = Coro::State PACKAGE = Coro::State PREFIX = api_
1930		2076
1931	PROTOTYPES: DISABLE	2077	PROTOTYPES: DISABLE
1932
1933	# these not obviously related functions are all rolled into the same xs
1934	# function to increase chances that they all will call transfer with the same
1935	# stack offset
1936	void
1937	_set_stacklevel (...)
1938	ALIAS:
1939	Coro::State::transfer = 1
1940	Coro::schedule = 2
1941	Coro::cede = 3
1942	Coro::cede_notself = 4
1943	CODE:
1944	{
1945	assert (("FATAL: ssl call recursion in Coro module (please report)", PL_op->op_ppaddr != pp_set_stacklevel));
1946
1947	assert (("FATAL: ssl call with illegal CV value", CvGV (cv)));
1948	ssl_cv = cv;
1949
1950	/* we patch the op, and then re-run the whole call */
1951	/* we have to put some dummy argument on the stack for this to work */
1952	ssl_restore.op_next = (OP *)&ssl_restore;
1953	ssl_restore.op_type = OP_NULL;
1954	ssl_restore.op_ppaddr = pp_restore;
1955	ssl_restore.op_first = PL_op;
1956
1957	ssl_arg0 = items > 0 ? SvREFCNT_inc (ST (0)) : 0;
1958	ssl_arg1 = items > 1 ? SvREFCNT_inc (ST (1)) : 0;
1959
1960	PL_op->op_ppaddr = pp_set_stacklevel;
1961	PL_op->op_private = PL_op->op_private & ~OPpENTERSUB_SSL \| ix; /* we potentially share our private flags with entersub */
1962
1963	PL_op = (OP *)&ssl_restore;
1964	}
1965		2078
1966	BOOT:	2079	BOOT:
1967	{	2080	{
1968	#ifdef USE_ITHREADS	2081	#ifdef USE_ITHREADS
1969	MUTEX_INIT (&coro_lock);	2082	MUTEX_INIT (&coro_lock);
…		…
1995	main_top_env = PL_top_env;	2108	main_top_env = PL_top_env;
1996		2109
1997	while (main_top_env->je_prev)	2110	while (main_top_env->je_prev)
1998	main_top_env = main_top_env->je_prev;	2111	main_top_env = main_top_env->je_prev;
1999		2112
2000	coroapi.ver = CORO_API_VERSION;	2113	coroapi.ver = CORO_API_VERSION;
2001	coroapi.rev = CORO_API_REVISION;	2114	coroapi.rev = CORO_API_REVISION;
		2115
2002	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;
2003		2124
2004	{	2125	{
2005	SV **svp = hv_fetch (PL_modglobal, "Time::NVtime", 12, 0);	2126	SV **svp = hv_fetch (PL_modglobal, "Time::NVtime", 12, 0);
2006		2127
2007	if (!svp) croak ("Time::HiRes is required");	2128	if (!svp) croak ("Time::HiRes is required");
…		…
2039	for (i = 1; i < items; i++)	2160	for (i = 1; i < items; i++)
2040	av_push (coro->args, newSVsv (ST (i)));	2161	av_push (coro->args, newSVsv (ST (i)));
2041	}	2162	}
2042	OUTPUT:	2163	OUTPUT:
2043	RETVAL	2164	RETVAL
		2165
		2166	void
		2167	_set_stacklevel (...)
		2168	CODE:
		2169	api_execute_slf (aTHX_ cv, slf_init_set_stacklevel, &ST (0), items);
		2170
		2171	void
		2172	transfer (...)
		2173	PROTOTYPE: $$
		2174	CODE:
		2175	api_execute_slf (aTHX_ cv, slf_init_transfer, &ST (0), items);
2044		2176
2045	bool	2177	bool
2046	_destroy (SV *coro_sv)	2178	_destroy (SV *coro_sv)
2047	CODE:	2179	CODE:
2048	RETVAL = coro_state_destroy (aTHX_ SvSTATE (coro_sv));	2180	RETVAL = coro_state_destroy (aTHX_ SvSTATE (coro_sv));
…		…
2055	CODE:	2187	CODE:
2056	_exit (code);	2188	_exit (code);
2057		2189
2058	int	2190	int
2059	cctx_stacksize (int new_stacksize = 0)	2191	cctx_stacksize (int new_stacksize = 0)
		2192	PROTOTYPE: ;$
2060	CODE:	2193	CODE:
2061	RETVAL = cctx_stacksize;	2194	RETVAL = cctx_stacksize;
2062	if (new_stacksize)	2195	if (new_stacksize)
2063	{	2196	{
2064	cctx_stacksize = new_stacksize;	2197	cctx_stacksize = new_stacksize;
…		…
2067	OUTPUT:	2200	OUTPUT:
2068	RETVAL	2201	RETVAL
2069		2202
2070	int	2203	int
2071	cctx_max_idle (int max_idle = 0)	2204	cctx_max_idle (int max_idle = 0)
		2205	PROTOTYPE: ;$
2072	CODE:	2206	CODE:
2073	RETVAL = cctx_max_idle;	2207	RETVAL = cctx_max_idle;
2074	if (max_idle > 1)	2208	if (max_idle > 1)
2075	cctx_max_idle = max_idle;	2209	cctx_max_idle = max_idle;
2076	OUTPUT:	2210	OUTPUT:
2077	RETVAL	2211	RETVAL
2078		2212
2079	int	2213	int
2080	cctx_count ()	2214	cctx_count ()
		2215	PROTOTYPE:
2081	CODE:	2216	CODE:
2082	RETVAL = cctx_count;	2217	RETVAL = cctx_count;
2083	OUTPUT:	2218	OUTPUT:
2084	RETVAL	2219	RETVAL
2085		2220
2086	int	2221	int
2087	cctx_idle ()	2222	cctx_idle ()
		2223	PROTOTYPE:
2088	CODE:	2224	CODE:
2089	RETVAL = cctx_idle;	2225	RETVAL = cctx_idle;
2090	OUTPUT:	2226	OUTPUT:
2091	RETVAL	2227	RETVAL
2092		2228
2093	void	2229	void
2094	list ()	2230	list ()
		2231	PROTOTYPE:
2095	PPCODE:	2232	PPCODE:
2096	{	2233	{
2097	struct coro *coro;	2234	struct coro *coro;
2098	for (coro = coro_first; coro; coro = coro->next)	2235	for (coro = coro_first; coro; coro = coro->next)
2099	if (coro->hv)	2236	if (coro->hv)
…		…
2166	SvREFCNT_dec (self->throw);	2303	SvREFCNT_dec (self->throw);
2167	self->throw = SvOK (throw) ? newSVsv (throw) : 0;	2304	self->throw = SvOK (throw) ? newSVsv (throw) : 0;
2168		2305
2169	void	2306	void
2170	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: $;$
		2309	C_ARGS: aTHX_ coro, flags
2171		2310
2172	SV *	2311	SV *
2173	has_cctx (Coro::State coro)	2312	has_cctx (Coro::State coro)
2174	PROTOTYPE: $	2313	PROTOTYPE: $
2175	CODE:	2314	CODE:
…		…
2199	OUTPUT:	2338	OUTPUT:
2200	RETVAL	2339	RETVAL
2201		2340
2202	void	2341	void
2203	force_cctx ()	2342	force_cctx ()
		2343	PROTOTYPE:
2204	CODE:	2344	CODE:
2205	struct coro *coro = SvSTATE (coro_current);	2345	struct coro *coro = SvSTATE (coro_current);
2206	coro->cctx->idle_sp = 0;	2346	coro->cctx->idle_sp = 0;
2207		2347
2208	void	2348	void
…		…
2210	PROTOTYPE: $	2350	PROTOTYPE: $
2211	ALIAS:	2351	ALIAS:
2212	swap_defav = 1	2352	swap_defav = 1
2213	CODE:	2353	CODE:
2214	if (!self->slot)	2354	if (!self->slot)
2215	croak ("cannot swap state with coroutine that has no saved state");	2355	croak ("cannot swap state with coroutine that has no saved state,");
2216	else	2356	else
2217	{	2357	{
2218	SV src = ix ? (SV )&GvAV (PL_defgv) : &GvSV (PL_defgv);	2358	SV src = ix ? (SV )&GvAV (PL_defgv) : &GvSV (PL_defgv);
2219	SV dst = ix ? (SV )&self->slot->defav : (SV **)&self->slot->defsv;	2359	SV dst = ix ? (SV )&self->slot->defav : (SV **)&self->slot->defsv;
2220		2360
…		…
2252	coroapi.schedule = api_schedule;	2392	coroapi.schedule = api_schedule;
2253	coroapi.cede = api_cede;	2393	coroapi.cede = api_cede;
2254	coroapi.cede_notself = api_cede_notself;	2394	coroapi.cede_notself = api_cede_notself;
2255	coroapi.ready = api_ready;	2395	coroapi.ready = api_ready;
2256	coroapi.is_ready = api_is_ready;	2396	coroapi.is_ready = api_is_ready;
2257	coroapi.nready = &coro_nready;	2397	coroapi.nready = coro_nready;
2258	coroapi.current = coro_current;	2398	coroapi.current = coro_current;
2259		2399
2260	GCoroAPI = &coroapi;	2400	GCoroAPI = &coroapi;
2261	sv_setiv (sv, (IV)&coroapi);	2401	sv_setiv (sv, (IV)&coroapi);
2262	SvREADONLY_on (sv);	2402	SvREADONLY_on (sv);
2263	}	2403	}
2264	}	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);
2265		2420
2266	void	2421	void
2267	_set_current (SV *current)	2422	_set_current (SV *current)
2268	PROTOTYPE: $	2423	PROTOTYPE: $
2269	CODE:	2424	CODE:
…		…
2279	coro_readyhook = SvOK (hook) ? newSVsv (hook) : 0;	2434	coro_readyhook = SvOK (hook) ? newSVsv (hook) : 0;
2280	UNLOCK;	2435	UNLOCK;
2281		2436
2282	int	2437	int
2283	prio (Coro::State coro, int newprio = 0)	2438	prio (Coro::State coro, int newprio = 0)
		2439	PROTOTYPE: $;$
2284	ALIAS:	2440	ALIAS:
2285	nice = 1	2441	nice = 1
2286	CODE:	2442	CODE:
2287	{	2443	{
2288	RETVAL = coro->prio;	2444	RETVAL = coro->prio;
…		…
2303		2459
2304	SV *	2460	SV *
2305	ready (SV *self)	2461	ready (SV *self)
2306	PROTOTYPE: $	2462	PROTOTYPE: $
2307	CODE:	2463	CODE:
2308	RETVAL = boolSV (api_ready (self));	2464	RETVAL = boolSV (api_ready (aTHX_ self));
2309	OUTPUT:	2465	OUTPUT:
2310	RETVAL	2466	RETVAL
2311		2467
2312	int	2468	int
2313	nready (...)	2469	nready (...)
…		…
2352	{	2508	{
2353	av_fill (defav, len - 1);	2509	av_fill (defav, len - 1);
2354	for (i = 0; i < len; ++i)	2510	for (i = 0; i < len; ++i)
2355	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]));
2356	}	2512	}
2357
2358	SvREFCNT_dec (invoke);
2359	}	2513	}
2360		2514
2361	void	2515	void
2362	_pool_2 (SV *cb)	2516	_pool_2 (SV *cb)
2363	CODE:	2517	CODE:
…		…
2383	newSVpvn ("[async_pool idle]", sizeof ("[async_pool idle]") - 1), 0);	2537	newSVpvn ("[async_pool idle]", sizeof ("[async_pool idle]") - 1), 0);
2384		2538
2385	coro->prio = 0;	2539	coro->prio = 0;
2386		2540
2387	if (coro->cctx && (coro->cctx->flags & CC_TRACE))	2541	if (coro->cctx && (coro->cctx->flags & CC_TRACE))
2388	api_trace (coro_current, 0);	2542	api_trace (aTHX_ coro_current, 0);
2389		2543
2390	av_push (av_async_pool, newSVsv (coro_current));	2544	av_push (av_async_pool, newSVsv (coro_current));
2391	}	2545	}
2392
2393	#if 0
2394
2395	void
2396	_generator_call (...)
2397	PROTOTYPE: @
2398	PPCODE:
2399	fprintf (stderr, "call %p\n", CvXSUBANY(cv).any_ptr);
2400	xxxx
2401	abort ();
2402
2403	SV *
2404	gensub (SV *sub, ...)
2405	PROTOTYPE: &;@
2406	CODE:
2407	{
2408	struct coro *coro;
2409	MAGIC *mg;
2410	CV *xcv;
2411	CV ncv = (CV )newSV_type (SVt_PVCV);
2412	int i;
2413
2414	CvGV (ncv) = CvGV (cv);
2415	CvFILE (ncv) = CvFILE (cv);
2416
2417	Newz (0, coro, 1, struct coro);
2418	coro->args = newAV ();
2419	coro->flags = CF_NEW;
2420
2421	av_extend (coro->args, items - 1);
2422	for (i = 1; i < items; i++)
2423	av_push (coro->args, newSVsv (ST (i)));
2424
2425	CvISXSUB_on (ncv);
2426	CvXSUBANY (ncv).any_ptr = (void *)coro;
2427
2428	xcv = GvCV (gv_fetchpv ("Coro::_generator_call", 0, SVt_PVCV));
2429
2430	CvXSUB (ncv) = CvXSUB (xcv);
2431	CvANON_on (ncv);
2432
2433	mg = sv_magicext ((SV )ncv, 0, CORO_MAGIC_type_state, &coro_gensub_vtbl, (char )coro, 0);
2434	RETVAL = newRV_noinc ((SV *)ncv);
2435	}
2436	OUTPUT:
2437	RETVAL
2438
2439	#endif
2440		2546
2441		2547
2442	MODULE = Coro::State PACKAGE = Coro::AIO	2548	MODULE = Coro::State PACKAGE = Coro::AIO
2443		2549
2444	void	2550	void
2445	_get_state (SV *self)	2551	_get_state (SV *self)
		2552	PROTOTYPE: $
2446	PPCODE:	2553	PPCODE:
2447	{	2554	{
2448	AV *defav = GvAV (PL_defgv);	2555	AV *defav = GvAV (PL_defgv);
2449	AV *av = newAV ();	2556	AV *av = newAV ();
2450	int i;	2557	int i;
…		…
2465		2572
2466	av_push (av, data_sv);	2573	av_push (av, data_sv);
2467		2574
2468	XPUSHs (sv_2mortal (newRV_noinc ((SV *)av)));	2575	XPUSHs (sv_2mortal (newRV_noinc ((SV *)av)));
2469		2576
2470	api_ready (self);	2577	api_ready (aTHX_ self);
2471	}	2578	}
2472		2579
2473	void	2580	void
2474	_set_state (SV *state)	2581	_set_state (SV *state)
2475	PROTOTYPE: $	2582	PROTOTYPE: $
…		…
2493	MODULE = Coro::State PACKAGE = Coro::AnyEvent	2600	MODULE = Coro::State PACKAGE = Coro::AnyEvent
2494		2601
2495	BOOT:	2602	BOOT:
2496	sv_activity = coro_get_sv (aTHX_ "Coro::AnyEvent::ACTIVITY", TRUE);	2603	sv_activity = coro_get_sv (aTHX_ "Coro::AnyEvent::ACTIVITY", TRUE);
2497		2604
2498	SV *	2605	void
2499	_schedule (...)	2606	_schedule (...)
2500	PROTOTYPE: @
2501	CODE:	2607	CODE:
2502	{	2608	{
2503	static int incede;	2609	static int incede;
2504		2610
2505	api_cede_notself ();	2611	api_cede_notself (aTHX);
2506		2612
2507	++incede;	2613	++incede;
2508	while (coro_nready >= incede && api_cede ())	2614	while (coro_nready >= incede && api_cede (aTHX))
2509	;	2615	;
2510		2616
2511	sv_setsv (sv_activity, &PL_sv_undef);	2617	sv_setsv (sv_activity, &PL_sv_undef);
2512	if (coro_nready >= incede)	2618	if (coro_nready >= incede)
2513	{	2619	{
…		…
2524	MODULE = Coro::State PACKAGE = PerlIO::cede	2630	MODULE = Coro::State PACKAGE = PerlIO::cede
2525		2631
2526	BOOT:	2632	BOOT:
2527	PerlIO_define_layer (aTHX_ &PerlIO_cede);	2633	PerlIO_define_layer (aTHX_ &PerlIO_cede);
2528		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

Diff Legend

-–
+Removed lines
-+
+Added lines
-<
+Changed lines
->
+Changed lines

Comparing Coro/Coro/State.xs (file contents): Revision 1.266 by root, Fri Nov 14 03:26:22 2008 UTC vs. Revision 1.278 by root, Sun Nov 16 07:09:28 2008 UTC

Diff Legend

Comparing Coro/Coro/State.xs (file contents):
Revision 1.266 by root, Fri Nov 14 03:26:22 2008 UTC vs.
Revision 1.278 by root, Sun Nov 16 07:09:28 2008 UTC