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

Comparing Coro/Coro/State.xs (file contents):
Revision 1.267 by root, Fri Nov 14 06:29:52 2008 UTC vs.
Revision 1.277 by root, Sat Nov 15 18:40:55 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 sometimes 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
1660	static void	1646	INLINE void
1661	prepare_cede_notself (pTHX_ struct transfer_args *ta)	1647	prepare_cede_notself (pTHX_ struct coro_transfer_args *ta)
1662	{	1648	{
1663	SV *prev = SvRV (coro_current);	1649	SV *prev = SvRV (coro_current);
1664		1650
1665	if (coro_nready)	1651	if (coro_nready)
1666	{	1652	{
1667	prepare_schedule (aTHX_ ta);	1653	prepare_schedule (aTHX_ ta);
1668	api_ready (prev);	1654	api_ready (aTHX_ prev);
1669	}	1655	}
1670	else	1656	else
1671	ta->prev = ta->next = SvSTATE (prev);	1657	prepare_nop (aTHX_ ta);
1672	}	1658	}
1673		1659
1674	static void	1660	static void
1675	api_schedule (void)	1661	api_schedule (pTHX)
1676	{	1662	{
1677	dTHX;
1678	struct transfer_args ta;	1663	struct coro_transfer_args ta;
1679		1664
1680	prepare_schedule (aTHX_ &ta);	1665	prepare_schedule (aTHX_ &ta);
1681	TRANSFER (ta, 1);	1666	TRANSFER (ta, 1);
1682	}	1667	}
1683		1668
1684	static int	1669	static int
1685	api_cede (void)	1670	api_cede (pTHX)
1686	{	1671	{
1687	dTHX;
1688	struct transfer_args ta;	1672	struct coro_transfer_args ta;
1689		1673
1690	prepare_cede (aTHX_ &ta);	1674	prepare_cede (aTHX_ &ta);
1691		1675
1692	if (expect_true (ta.prev != ta.next))	1676	if (expect_true (ta.prev != ta.next))
1693	{	1677	{
…		…
1697	else	1681	else
1698	return 0;	1682	return 0;
1699	}	1683	}
1700		1684
1701	static int	1685	static int
1702	api_cede_notself (void)	1686	api_cede_notself (pTHX)
1703	{	1687	{
1704	if (coro_nready)	1688	if (coro_nready)
1705	{	1689	{
1706	dTHX;
1707	struct transfer_args ta;	1690	struct coro_transfer_args ta;
1708		1691
1709	prepare_cede_notself (aTHX_ &ta);	1692	prepare_cede_notself (aTHX_ &ta);
1710	TRANSFER (ta, 1);	1693	TRANSFER (ta, 1);
1711	return 1;	1694	return 1;
1712	}	1695	}
1713	else	1696	else
1714	return 0;	1697	return 0;
1715	}	1698	}
1716		1699
1717	static void	1700	static void
1718	api_trace (SV *coro_sv, int flags)	1701	api_trace (pTHX_ SV *coro_sv, int flags)
1719	{	1702	{
1720	dTHX;
1721	struct coro *coro = SvSTATE (coro_sv);	1703	struct coro *coro = SvSTATE (coro_sv);
1722		1704
1723	if (flags & CC_TRACE)	1705	if (flags & CC_TRACE)
1724	{	1706	{
1725	if (!coro->cctx)	1707	if (!coro->cctx)
1726	coro->cctx = cctx_new_run ();	1708	coro->cctx = cctx_new_run ();
1727	else if (!(coro->cctx->flags & CC_TRACE))	1709	else if (!(coro->cctx->flags & CC_TRACE))
1728	croak ("cannot enable tracing on coroutine with custom stack");	1710	croak ("cannot enable tracing on coroutine with custom stack,");
1729		1711
1730	coro->cctx->flags \|= CC_NOREUSE \| (flags & (CC_TRACE \| CC_TRACE_ALL));	1712	coro->cctx->flags \|= CC_NOREUSE \| (flags & (CC_TRACE \| CC_TRACE_ALL));
1731	}	1713	}
1732	else if (coro->cctx && coro->cctx->flags & CC_TRACE)	1714	else if (coro->cctx && coro->cctx->flags & CC_TRACE)
1733	{	1715	{
…		…
1792	PerlIOCede *self = PerlIOSelf (f, PerlIOCede);	1774	PerlIOCede *self = PerlIOSelf (f, PerlIOCede);
1793	double now = nvtime ();	1775	double now = nvtime ();
1794		1776
1795	if (now >= self->next)	1777	if (now >= self->next)
1796	{	1778	{
1797	api_cede ();	1779	api_cede (aTHX);
1798	self->next = now + self->every;	1780	self->next = now + self->every;
1799	}	1781	}
1800		1782
1801	return PerlIOBuf_flush (aTHX_ f);	1783	return PerlIOBuf_flush (aTHX_ f);
1802	}	1784	}
…		…
1833	PerlIOBuf_set_ptrcnt,	1815	PerlIOBuf_set_ptrcnt,
1834	};	1816	};
1835		1817
1836	/*****************************************************************************/	1818	/*****************************************************************************/
1837		1819
1838	static const CV ssl_cv; / for quick consistency check */	1820	static const CV slf_cv; / for quick consistency check */
1839		1821
1840	static UNOP ssl_restore; /* restore stack as entersub did, for first-re-run */	1822	static UNOP slf_restore; /* restore stack as entersub did, for first-re-run */
1841	static SV *ssl_arg0;	1823	static SV *slf_arg0;
1842	static SV *ssl_arg1;	1824	static SV *slf_arg1;
		1825	static SV *slf_arg2;
1843		1826
1844	/* this restores the stack in the case we patched the entersub, to */	1827	/* this restores the stack in the case we patched the entersub, to */
1845	/* recreate the stack frame as perl will on following calls */	1828	/* recreate the stack frame as perl will on following calls */
1846	/* since entersub cleared the stack */	1829	/* since entersub cleared the stack */
1847	static OP *	1830	static OP *
…		…
1850	dSP;	1833	dSP;
1851		1834
1852	PUSHMARK (SP);	1835	PUSHMARK (SP);
1853		1836
1854	EXTEND (SP, 3);	1837	EXTEND (SP, 3);
1855	if (ssl_arg0) PUSHs (sv_2mortal (ssl_arg0)), ssl_arg0 = 0;	1838	if (slf_arg0) PUSHs (sv_2mortal (slf_arg0));
1856	if (ssl_arg1) PUSHs (sv_2mortal (ssl_arg1)), ssl_arg1 = 0;	1839	if (slf_arg1) PUSHs (sv_2mortal (slf_arg1));
		1840	if (slf_arg2) PUSHs (sv_2mortal (slf_arg2));
1857	PUSHs ((SV *)CvGV (ssl_cv));	1841	PUSHs ((SV *)CvGV (slf_cv));
1858		1842
1859	RETURNOP (ssl_restore.op_first);	1843	RETURNOP (slf_restore.op_first);
1860	}	1844	}
1861		1845
1862	#define OPpENTERSUB_SSL 15 /* the part of op_private entersub hopefully doesn't use */	1846	static void
		1847	slf_prepare_set_stacklevel (pTHX_ struct coro_transfer_args *ta)
		1848	{
		1849	prepare_set_stacklevel (ta, (struct coro_cctx *)slf_frame.data);
		1850	}
1863		1851
1864	/* declare prototype */	1852	static void
1865	XS(XS_Coro__State__set_stacklevel);	1853	slf_init_set_stacklevel (pTHX_ struct CoroSLF frame, SV *arg, int items)
		1854	{
		1855	assert (("FATAL: set_stacklevel needs the coro cctx as sole argument", items == 1));
		1856
		1857	frame->prepare = slf_prepare_set_stacklevel;
		1858	frame->check = slf_check_nop;
		1859	frame->data = (void *)SvIV (arg [0]);
		1860	}
		1861
		1862	static void
		1863	slf_prepare_transfer (pTHX_ struct coro_transfer_args *ta)
		1864	{
		1865	SV arg = (SV )slf_frame.data;
		1866
		1867	prepare_transfer (aTHX_ ta, arg [0], arg [1]);
		1868	}
		1869
		1870	static void
		1871	slf_init_transfer (pTHX_ struct CoroSLF frame, SV *arg, int items)
		1872	{
		1873	if (items != 2)
		1874	croak ("Coro::State::transfer (prev, next) expects two arguments, not %d,", items);
		1875
		1876	frame->prepare = slf_prepare_transfer;
		1877	frame->check = slf_check_nop;
		1878	frame->data = (void )arg; / let's hope it will stay valid */
		1879	}
		1880
		1881	static void
		1882	slf_init_schedule (pTHX_ struct CoroSLF frame, SV *arg, int items)
		1883	{
		1884	frame->prepare = prepare_schedule;
		1885	frame->check = slf_check_nop;
		1886	}
		1887
		1888	static void
		1889	slf_init_cede (pTHX_ struct CoroSLF frame, SV *arg, int items)
		1890	{
		1891	frame->prepare = prepare_cede;
		1892	frame->check = slf_check_nop;
		1893	}
		1894
		1895	static void
		1896	slf_init_cede_notself (pTHX_ struct CoroSLF frame, SV *arg, int items)
		1897	{
		1898	frame->prepare = prepare_cede_notself;
		1899	frame->check = slf_check_nop;
		1900	}
		1901
		1902	/* we hijack an hopefully unused CV flag for our purposes */
		1903	#define CVf_SLF 0x4000
1866		1904
1867	/*	1905	/*
1868	* these not obviously related functions are all rolled into one	1906	* these not obviously related functions are all rolled into one
1869	* function to increase chances that they all will call transfer with the same	1907	* function to increase chances that they all will call transfer with the same
1870	* stack offset	1908	* stack offset
		1909	* SLF stands for "schedule-like-function".
1871	*/	1910	*/
1872	static OP *	1911	static OP *
1873	pp_set_stacklevel (pTHX)	1912	pp_slf (pTHX)
1874	{	1913	{
		1914	I32 checkmark; /* mark SP to see how many elements check has pushed */
		1915
		1916	/* set up the slf frame, unless it has already been set-up */
		1917	/* the latter happens when a new coro has been started */
		1918	/* or when a new cctx was attached to an existing coroutine */
		1919	if (expect_true (!slf_frame.prepare))
		1920	{
		1921	/* first iteration */
1875	dSP;	1922	dSP;
1876	struct transfer_args ta;
1877	SV **arg = PL_stack_base + TOPMARK + 1;	1923	SV **arg = PL_stack_base + TOPMARK + 1;
1878	int items = SP - arg; /* args without function object */	1924	int items = SP - arg; /* args without function object */
		1925	SV gv = sp;
1879		1926
1880	/* do a quick consistency check on the "function" object, and if it isn't */	1927	/* do a quick consistency check on the "function" object, and if it isn't */
1881	/* for us, divert to the real entersub */	1928	/* for us, divert to the real entersub */
1882	if (SvTYPE (sp) != SVt_PVGV \|\| CvXSUB (GvCV (sp)) != XS_Coro__State__set_stacklevel)	1929	if (SvTYPE (gv) != SVt_PVGV \|\| !(CvFLAGS (GvCV (gv)) & CVf_SLF))
1883	return PL_ppaddr[OP_ENTERSUB](aTHX);	1930	return PL_ppaddr[OP_ENTERSUB](aTHX);
1884		1931
1885	/* pop args */	1932	/* pop args */
1886	SP = PL_stack_base + POPMARK;	1933	SP = PL_stack_base + POPMARK;
1887		1934
1888	if (!(PL_op->op_flags & OPf_STACKED))	1935	if (!(PL_op->op_flags & OPf_STACKED))
1889	{	1936	{
1890	/* ampersand-form of call, use @_ instead of stack */	1937	/* ampersand-form of call, use @_ instead of stack */
1891	AV *av = GvAV (PL_defgv);	1938	AV *av = GvAV (PL_defgv);
1892	arg = AvARRAY (av);	1939	arg = AvARRAY (av);
1893	items = AvFILLp (av) + 1;	1940	items = AvFILLp (av) + 1;
		1941	}
		1942
		1943	PUTBACK;
		1944
		1945	((coro_slf_cb)CvXSUBANY (GvCV (gv)).any_ptr) (aTHX_ &slf_frame, arg, items);
		1946	}
		1947
		1948	/* now interpret the slf_frame */
		1949	/* we use a callback system not to make the code needlessly */
		1950	/* complicated, but so we can run multiple perl coros from one cctx */
		1951
		1952	do
		1953	{
		1954	struct coro_transfer_args ta;
		1955
		1956	slf_frame.prepare (aTHX_ &ta);
		1957	TRANSFER (ta, 0);
		1958
		1959	checkmark = PL_stack_sp - PL_stack_base;
		1960	}
		1961	while (slf_frame.check (aTHX_ &slf_frame));
		1962
		1963	{
		1964	dSP;
		1965	SV **bot = PL_stack_base + checkmark;
		1966	int gimme = GIMME_V;
		1967
		1968	slf_frame.prepare = 0; /* signal pp_slf that we need a new frame */
		1969
		1970	/* make sure we put something on the stack in scalar context */
		1971	if (gimme == G_SCALAR)
		1972	{
		1973	if (sp == bot)
		1974	XPUSHs (&PL_sv_undef);
		1975
		1976	SP = bot + 1;
1894	}	1977	}
1895		1978
1896	PUTBACK;	1979	PUTBACK;
1897	switch (PL_op->op_private & OPpENTERSUB_SSL)
1898	{
1899	case 0:
1900	prepare_set_stacklevel (&ta, (struct coro_cctx *)SvIV (arg [0]));
1901	break;
1902
1903	case 1:
1904	if (items != 2)
1905	croak ("Coro::State::transfer (prev, next) expects two arguments, not %d.", items);
1906
1907	prepare_transfer (aTHX_ &ta, arg [0], arg [1]);
1908	break;
1909
1910	case 2:
1911	prepare_schedule (aTHX_ &ta);
1912	break;
1913
1914	case 3:
1915	prepare_cede (aTHX_ &ta);
1916	break;
1917
1918	case 4:
1919	prepare_cede_notself (aTHX_ &ta);
1920	break;
1921	}	1980	}
1922		1981
1923	TRANSFER (ta, 0);	1982	return NORMAL;
1924	SPAGAIN;
1925
1926	skip:
1927	PUTBACK;
1928	SSL_TAIL;
1929	SPAGAIN;
1930	RETURN;
1931	}	1983	}
1932		1984
1933	static void	1985	static void
1934	coro_ssl_patch (pTHX_ CV cv, int ix, SV *args, int items)	1986	api_execute_slf (pTHX_ CV cv, coro_slf_cb init_cb, SV *arg, int items)
1935	{	1987	{
1936	assert (("FATAL: ssl call recursion in Coro module (please report)", PL_op->op_ppaddr != pp_set_stacklevel));
1937
1938	assert (("FATAL: ssl call with illegal CV value", CvGV (cv)));	1988	assert (("FATAL: SLF call with illegal CV value", !CvANON (cv)));
		1989
		1990	if (PL_op->op_ppaddr != PL_ppaddr [OP_ENTERSUB]
		1991	&& PL_op->op_ppaddr != pp_slf)
		1992	croak ("FATAL: Coro SLF calls can only be made normally, not via goto or any other means, caught");
		1993
		1994	if (items > 3)
		1995	croak ("Coro only supports up to three arguments to SLF functions currently (not %d), caught", items);
		1996
		1997	CvFLAGS (cv) \|= CVf_SLF;
		1998	CvXSUBANY (cv).any_ptr = (void *)init_cb;
1939	ssl_cv = cv;	1999	slf_cv = cv;
1940		2000
1941	/* we patch the op, and then re-run the whole call */	2001	/* we patch the op, and then re-run the whole call */
1942	/* we have to put some dummy argument on the stack for this to work */	2002	/* we have to put the same argument on the stack for this to work */
		2003	/* and this will be done by pp_restore */
1943	ssl_restore.op_next = (OP *)&ssl_restore;	2004	slf_restore.op_next = (OP *)&slf_restore;
1944	ssl_restore.op_type = OP_NULL;	2005	slf_restore.op_type = OP_NULL;
1945	ssl_restore.op_ppaddr = pp_restore;	2006	slf_restore.op_ppaddr = pp_restore;
1946	ssl_restore.op_first = PL_op;	2007	slf_restore.op_first = PL_op;
1947		2008
1948	ssl_arg0 = items > 0 ? SvREFCNT_inc (args [0]) : 0;	2009	slf_arg0 = items > 0 ? SvREFCNT_inc (arg [0]) : 0;
1949	ssl_arg1 = items > 1 ? SvREFCNT_inc (args [1]) : 0;	2010	slf_arg1 = items > 1 ? SvREFCNT_inc (arg [1]) : 0;
		2011	slf_arg2 = items > 2 ? SvREFCNT_inc (arg [2]) : 0;
1950		2012
1951	PL_op->op_ppaddr = pp_set_stacklevel;	2013	PL_op->op_ppaddr = pp_slf;
1952	PL_op->op_private = PL_op->op_private & ~OPpENTERSUB_SSL \| ix; /* we potentially share our private flags with entersub */
1953		2014
1954	PL_op = (OP *)&ssl_restore;	2015	PL_op = (OP *)&slf_restore;
		2016	}
		2017
		2018	/*****************************************************************************/
		2019
		2020	static int
		2021	slf_check_semaphore_down (pTHX_ struct CoroSLF *frame)
		2022	{
		2023	AV av = (AV )frame->data;
		2024	SV *count_sv = AvARRAY (av)[0];
		2025
		2026	if (SvIVX (count_sv) > 0)
		2027	{
		2028	SvIVX (count_sv) = SvIVX (count_sv) - 1;
		2029	return 0;
		2030	}
		2031	else
		2032	{
		2033	int i;
		2034	/* if we were woken up but can't down, we look through the whole */
		2035	/* waiters list and only add us if we aren't in there already */
		2036	/* this avoids some degenerate memory usage cases */
		2037
		2038	for (i = 1; i <= AvFILLp (av); ++i)
		2039	if (AvARRAY (av)[i] == SvRV (coro_current))
		2040	return 1;
		2041
		2042	av_push (av, SvREFCNT_inc (SvRV (coro_current)));
		2043	return 1;
		2044	}
		2045	}
		2046
		2047	static void
		2048	slf_init_semaphore_down (pTHX_ struct CoroSLF frame, SV *arg, int items)
		2049	{
		2050	AV av = (AV )SvRV (arg [0]);
		2051
		2052	if (SvIVX (AvARRAY (av)[0]) > 0)
		2053	{
		2054	frame->data = (void *)av;
		2055	frame->prepare = prepare_nop;
		2056	}
		2057	else
		2058	{
		2059	av_push (av, SvREFCNT_inc (SvRV (coro_current)));
		2060
		2061	frame->data = (void )sv_2mortal (SvREFCNT_inc ((SV )av));
		2062	frame->prepare = prepare_schedule;
		2063	}
		2064
		2065	frame->check = slf_check_semaphore_down;
		2066
1955	}	2067	}
1956		2068
1957	MODULE = Coro::State PACKAGE = Coro::State PREFIX = api_	2069	MODULE = Coro::State PACKAGE = Coro::State PREFIX = api_
1958		2070
1959	PROTOTYPES: DISABLE	2071	PROTOTYPES: DISABLE
…		…
1990	main_top_env = PL_top_env;	2102	main_top_env = PL_top_env;
1991		2103
1992	while (main_top_env->je_prev)	2104	while (main_top_env->je_prev)
1993	main_top_env = main_top_env->je_prev;	2105	main_top_env = main_top_env->je_prev;
1994		2106
1995	coroapi.ver = CORO_API_VERSION;	2107	coroapi.ver = CORO_API_VERSION;
1996	coroapi.rev = CORO_API_REVISION;	2108	coroapi.rev = CORO_API_REVISION;
		2109
1997	coroapi.transfer = api_transfer;	2110	coroapi.transfer = api_transfer;
		2111
		2112	coroapi.sv_state = SvSTATE_;
		2113	coroapi.execute_slf = api_execute_slf;
		2114	coroapi.prepare_nop = prepare_nop;
		2115	coroapi.prepare_schedule = prepare_schedule;
		2116	coroapi.prepare_cede = prepare_cede;
		2117	coroapi.prepare_cede_notself = prepare_cede_notself;
1998		2118
1999	{	2119	{
2000	SV **svp = hv_fetch (PL_modglobal, "Time::NVtime", 12, 0);	2120	SV **svp = hv_fetch (PL_modglobal, "Time::NVtime", 12, 0);
2001		2121
2002	if (!svp) croak ("Time::HiRes is required");	2122	if (!svp) croak ("Time::HiRes is required");
…		…
2037	OUTPUT:	2157	OUTPUT:
2038	RETVAL	2158	RETVAL
2039		2159
2040	void	2160	void
2041	_set_stacklevel (...)	2161	_set_stacklevel (...)
2042	ALIAS:	2162	CODE:
2043	Coro::State::transfer = 1	2163	api_execute_slf (aTHX_ cv, slf_init_set_stacklevel, &ST (0), items);
2044	Coro::schedule = 2	2164
2045	Coro::cede = 3	2165	void
2046	Coro::cede_notself = 4	2166	transfer (...)
2047	CODE:	2167	PROTOTYPE: $$
2048	coro_ssl_patch (aTHX_ cv, ix, &ST (0), items);	2168	CODE:
		2169	api_execute_slf (aTHX_ cv, slf_init_transfer, &ST (0), items);
2049		2170
2050	bool	2171	bool
2051	_destroy (SV *coro_sv)	2172	_destroy (SV *coro_sv)
2052	CODE:	2173	CODE:
2053	RETVAL = coro_state_destroy (aTHX_ SvSTATE (coro_sv));	2174	RETVAL = coro_state_destroy (aTHX_ SvSTATE (coro_sv));
…		…
2060	CODE:	2181	CODE:
2061	_exit (code);	2182	_exit (code);
2062		2183
2063	int	2184	int
2064	cctx_stacksize (int new_stacksize = 0)	2185	cctx_stacksize (int new_stacksize = 0)
		2186	PROTOTYPE: ;$
2065	CODE:	2187	CODE:
2066	RETVAL = cctx_stacksize;	2188	RETVAL = cctx_stacksize;
2067	if (new_stacksize)	2189	if (new_stacksize)
2068	{	2190	{
2069	cctx_stacksize = new_stacksize;	2191	cctx_stacksize = new_stacksize;
…		…
2072	OUTPUT:	2194	OUTPUT:
2073	RETVAL	2195	RETVAL
2074		2196
2075	int	2197	int
2076	cctx_max_idle (int max_idle = 0)	2198	cctx_max_idle (int max_idle = 0)
		2199	PROTOTYPE: ;$
2077	CODE:	2200	CODE:
2078	RETVAL = cctx_max_idle;	2201	RETVAL = cctx_max_idle;
2079	if (max_idle > 1)	2202	if (max_idle > 1)
2080	cctx_max_idle = max_idle;	2203	cctx_max_idle = max_idle;
2081	OUTPUT:	2204	OUTPUT:
2082	RETVAL	2205	RETVAL
2083		2206
2084	int	2207	int
2085	cctx_count ()	2208	cctx_count ()
		2209	PROTOTYPE:
2086	CODE:	2210	CODE:
2087	RETVAL = cctx_count;	2211	RETVAL = cctx_count;
2088	OUTPUT:	2212	OUTPUT:
2089	RETVAL	2213	RETVAL
2090		2214
2091	int	2215	int
2092	cctx_idle ()	2216	cctx_idle ()
		2217	PROTOTYPE:
2093	CODE:	2218	CODE:
2094	RETVAL = cctx_idle;	2219	RETVAL = cctx_idle;
2095	OUTPUT:	2220	OUTPUT:
2096	RETVAL	2221	RETVAL
2097		2222
2098	void	2223	void
2099	list ()	2224	list ()
		2225	PROTOTYPE:
2100	PPCODE:	2226	PPCODE:
2101	{	2227	{
2102	struct coro *coro;	2228	struct coro *coro;
2103	for (coro = coro_first; coro; coro = coro->next)	2229	for (coro = coro_first; coro; coro = coro->next)
2104	if (coro->hv)	2230	if (coro->hv)
…		…
2171	SvREFCNT_dec (self->throw);	2297	SvREFCNT_dec (self->throw);
2172	self->throw = SvOK (throw) ? newSVsv (throw) : 0;	2298	self->throw = SvOK (throw) ? newSVsv (throw) : 0;
2173		2299
2174	void	2300	void
2175	api_trace (SV *coro, int flags = CC_TRACE \| CC_TRACE_SUB)	2301	api_trace (SV *coro, int flags = CC_TRACE \| CC_TRACE_SUB)
		2302	PROTOTYPE: $;$
		2303	C_ARGS: aTHX_ coro, flags
2176		2304
2177	SV *	2305	SV *
2178	has_cctx (Coro::State coro)	2306	has_cctx (Coro::State coro)
2179	PROTOTYPE: $	2307	PROTOTYPE: $
2180	CODE:	2308	CODE:
…		…
2204	OUTPUT:	2332	OUTPUT:
2205	RETVAL	2333	RETVAL
2206		2334
2207	void	2335	void
2208	force_cctx ()	2336	force_cctx ()
		2337	PROTOTYPE:
2209	CODE:	2338	CODE:
2210	struct coro *coro = SvSTATE (coro_current);	2339	struct coro *coro = SvSTATE (coro_current);
2211	coro->cctx->idle_sp = 0;	2340	coro->cctx->idle_sp = 0;
2212		2341
2213	void	2342	void
…		…
2215	PROTOTYPE: $	2344	PROTOTYPE: $
2216	ALIAS:	2345	ALIAS:
2217	swap_defav = 1	2346	swap_defav = 1
2218	CODE:	2347	CODE:
2219	if (!self->slot)	2348	if (!self->slot)
2220	croak ("cannot swap state with coroutine that has no saved state");	2349	croak ("cannot swap state with coroutine that has no saved state,");
2221	else	2350	else
2222	{	2351	{
2223	SV src = ix ? (SV )&GvAV (PL_defgv) : &GvSV (PL_defgv);	2352	SV src = ix ? (SV )&GvAV (PL_defgv) : &GvSV (PL_defgv);
2224	SV dst = ix ? (SV )&self->slot->defav : (SV **)&self->slot->defsv;	2353	SV dst = ix ? (SV )&self->slot->defav : (SV **)&self->slot->defsv;
2225		2354
…		…
2257	coroapi.schedule = api_schedule;	2386	coroapi.schedule = api_schedule;
2258	coroapi.cede = api_cede;	2387	coroapi.cede = api_cede;
2259	coroapi.cede_notself = api_cede_notself;	2388	coroapi.cede_notself = api_cede_notself;
2260	coroapi.ready = api_ready;	2389	coroapi.ready = api_ready;
2261	coroapi.is_ready = api_is_ready;	2390	coroapi.is_ready = api_is_ready;
2262	coroapi.nready = &coro_nready;	2391	coroapi.nready = coro_nready;
2263	coroapi.current = coro_current;	2392	coroapi.current = coro_current;
2264		2393
2265	GCoroAPI = &coroapi;	2394	GCoroAPI = &coroapi;
2266	sv_setiv (sv, (IV)&coroapi);	2395	sv_setiv (sv, (IV)&coroapi);
2267	SvREADONLY_on (sv);	2396	SvREADONLY_on (sv);
2268	}	2397	}
2269	}	2398	}
		2399
		2400	void
		2401	schedule (...)
		2402	CODE:
		2403	api_execute_slf (aTHX_ cv, slf_init_schedule, &ST (0), 0);
		2404
		2405	void
		2406	cede (...)
		2407	CODE:
		2408	api_execute_slf (aTHX_ cv, slf_init_cede, &ST (0), 0);
		2409
		2410	void
		2411	cede_notself (...)
		2412	CODE:
		2413	api_execute_slf (aTHX_ cv, slf_init_cede_notself, &ST (0), 0);
2270		2414
2271	void	2415	void
2272	_set_current (SV *current)	2416	_set_current (SV *current)
2273	PROTOTYPE: $	2417	PROTOTYPE: $
2274	CODE:	2418	CODE:
…		…
2284	coro_readyhook = SvOK (hook) ? newSVsv (hook) : 0;	2428	coro_readyhook = SvOK (hook) ? newSVsv (hook) : 0;
2285	UNLOCK;	2429	UNLOCK;
2286		2430
2287	int	2431	int
2288	prio (Coro::State coro, int newprio = 0)	2432	prio (Coro::State coro, int newprio = 0)
		2433	PROTOTYPE: $;$
2289	ALIAS:	2434	ALIAS:
2290	nice = 1	2435	nice = 1
2291	CODE:	2436	CODE:
2292	{	2437	{
2293	RETVAL = coro->prio;	2438	RETVAL = coro->prio;
…		…
2308		2453
2309	SV *	2454	SV *
2310	ready (SV *self)	2455	ready (SV *self)
2311	PROTOTYPE: $	2456	PROTOTYPE: $
2312	CODE:	2457	CODE:
2313	RETVAL = boolSV (api_ready (self));	2458	RETVAL = boolSV (api_ready (aTHX_ self));
2314	OUTPUT:	2459	OUTPUT:
2315	RETVAL	2460	RETVAL
2316		2461
2317	int	2462	int
2318	nready (...)	2463	nready (...)
…		…
2357	{	2502	{
2358	av_fill (defav, len - 1);	2503	av_fill (defav, len - 1);
2359	for (i = 0; i < len; ++i)	2504	for (i = 0; i < len; ++i)
2360	av_store (defav, i, SvREFCNT_inc_NN (AvARRAY (invoke_av)[i + 1]));	2505	av_store (defav, i, SvREFCNT_inc_NN (AvARRAY (invoke_av)[i + 1]));
2361	}	2506	}
2362
2363	SvREFCNT_dec (invoke);
2364	}	2507	}
2365		2508
2366	void	2509	void
2367	_pool_2 (SV *cb)	2510	_pool_2 (SV *cb)
2368	CODE:	2511	CODE:
…		…
2388	newSVpvn ("[async_pool idle]", sizeof ("[async_pool idle]") - 1), 0);	2531	newSVpvn ("[async_pool idle]", sizeof ("[async_pool idle]") - 1), 0);
2389		2532
2390	coro->prio = 0;	2533	coro->prio = 0;
2391		2534
2392	if (coro->cctx && (coro->cctx->flags & CC_TRACE))	2535	if (coro->cctx && (coro->cctx->flags & CC_TRACE))
2393	api_trace (coro_current, 0);	2536	api_trace (aTHX_ coro_current, 0);
2394		2537
2395	av_push (av_async_pool, newSVsv (coro_current));	2538	av_push (av_async_pool, newSVsv (coro_current));
2396	}	2539	}
2397		2540
2398	#if 0	2541	#if 0
…		…
2446		2589
2447	MODULE = Coro::State PACKAGE = Coro::AIO	2590	MODULE = Coro::State PACKAGE = Coro::AIO
2448		2591
2449	void	2592	void
2450	_get_state (SV *self)	2593	_get_state (SV *self)
		2594	PROTOTYPE: $
2451	PPCODE:	2595	PPCODE:
2452	{	2596	{
2453	AV *defav = GvAV (PL_defgv);	2597	AV *defav = GvAV (PL_defgv);
2454	AV *av = newAV ();	2598	AV *av = newAV ();
2455	int i;	2599	int i;
…		…
2470		2614
2471	av_push (av, data_sv);	2615	av_push (av, data_sv);
2472		2616
2473	XPUSHs (sv_2mortal (newRV_noinc ((SV *)av)));	2617	XPUSHs (sv_2mortal (newRV_noinc ((SV *)av)));
2474		2618
2475	api_ready (self);	2619	api_ready (aTHX_ self);
2476	}	2620	}
2477		2621
2478	void	2622	void
2479	_set_state (SV *state)	2623	_set_state (SV *state)
2480	PROTOTYPE: $	2624	PROTOTYPE: $
…		…
2498	MODULE = Coro::State PACKAGE = Coro::AnyEvent	2642	MODULE = Coro::State PACKAGE = Coro::AnyEvent
2499		2643
2500	BOOT:	2644	BOOT:
2501	sv_activity = coro_get_sv (aTHX_ "Coro::AnyEvent::ACTIVITY", TRUE);	2645	sv_activity = coro_get_sv (aTHX_ "Coro::AnyEvent::ACTIVITY", TRUE);
2502		2646
2503	SV *	2647	void
2504	_schedule (...)	2648	_schedule (...)
2505	PROTOTYPE: @
2506	CODE:	2649	CODE:
2507	{	2650	{
2508	static int incede;	2651	static int incede;
2509		2652
2510	api_cede_notself ();	2653	api_cede_notself (aTHX);
2511		2654
2512	++incede;	2655	++incede;
2513	while (coro_nready >= incede && api_cede ())	2656	while (coro_nready >= incede && api_cede (aTHX))
2514	;	2657	;
2515		2658
2516	sv_setsv (sv_activity, &PL_sv_undef);	2659	sv_setsv (sv_activity, &PL_sv_undef);
2517	if (coro_nready >= incede)	2660	if (coro_nready >= incede)
2518	{	2661	{
…		…
2529	MODULE = Coro::State PACKAGE = PerlIO::cede	2672	MODULE = Coro::State PACKAGE = PerlIO::cede
2530		2673
2531	BOOT:	2674	BOOT:
2532	PerlIO_define_layer (aTHX_ &PerlIO_cede);	2675	PerlIO_define_layer (aTHX_ &PerlIO_cede);
2533		2676
		2677	MODULE = Coro::State PACKAGE = Coro::Semaphore
		2678
		2679	SV *
		2680	new (SV klass, SV count_ = 0)
		2681	CODE:
		2682	{
		2683	/* a semaphore contains a counter IV in $sem->[0] and any waiters after that */
		2684	AV *av = newAV ();
		2685	av_push (av, newSViv (count_ && SvOK (count_) ? SvIV (count_) : 1));
		2686	RETVAL = sv_bless (newRV_noinc ((SV *)av), GvSTASH (CvGV (cv)));
		2687	}
		2688	OUTPUT:
		2689	RETVAL
		2690
		2691	SV *
		2692	count (SV *self)
		2693	CODE:
		2694	RETVAL = newSVsv (AvARRAY ((AV *)SvRV (self))[0]);
		2695	OUTPUT:
		2696	RETVAL
		2697
		2698	void
		2699	up (SV *self, int adjust = 1)
		2700	ALIAS:
		2701	adjust = 1
		2702	CODE:
		2703	{
		2704	AV av = (AV )SvRV (self);
		2705	SV *count_sv = AvARRAY (av)[0];
		2706	IV count = SvIVX (count_sv);
		2707
		2708	count += ix ? adjust : 1;
		2709	SvIVX (count_sv) = count;
		2710
		2711	/* now wake up as many waiters as possible */
		2712	while (count > 0 && AvFILLp (av) >= count)
		2713	{
		2714	SV *cb;
		2715
		2716	/* swap first two elements so we can shift a waiter */
		2717	AvARRAY (av)[0] = AvARRAY (av)[1];
		2718	AvARRAY (av)[1] = count_sv;
		2719	cb = av_shift (av);
		2720
		2721	if (SvOBJECT (cb))
		2722	api_ready (aTHX_ cb);
		2723	else
		2724	croak ("callbacks not yet supported");
		2725
		2726	SvREFCNT_dec (cb);
		2727	}
		2728	}
		2729
		2730	void
		2731	down (SV *self)
		2732	CODE:
		2733	api_execute_slf (aTHX_ cv, slf_init_semaphore_down, &ST (0), 1);
		2734
		2735	void
		2736	try (SV *self)
		2737	PPCODE:
		2738	{
		2739	AV av = (AV )SvRV (self);
		2740	SV *count_sv = AvARRAY (av)[0];
		2741	IV count = SvIVX (count_sv);
		2742
		2743	if (count > 0)
		2744	{
		2745	--count;
		2746	SvIVX (count_sv) = count;
		2747	XSRETURN_YES;
		2748	}
		2749	else
		2750	XSRETURN_NO;
		2751	}
		2752
		2753	void
		2754	waiters (SV *self)
		2755	CODE:
		2756	{
		2757	AV av = (AV )SvRV (self);
		2758
		2759	if (GIMME_V == G_SCALAR)
		2760	XPUSHs (sv_2mortal (newSVsv (AvARRAY (av)[0])));
		2761	else
		2762	{
		2763	int i;
		2764	EXTEND (SP, AvFILLp (av) + 1 - 1);
		2765	for (i = 1; i <= AvFILLp (av); ++i)
		2766	PUSHs (newSVsv (AvARRAY (av)[i]));
		2767	}
		2768	}
		2769

Diff Legend

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

Comparing Coro/Coro/State.xs (file contents): Revision 1.267 by root, Fri Nov 14 06:29:52 2008 UTC vs. Revision 1.277 by root, Sat Nov 15 18:40:55 2008 UTC

Diff Legend

Comparing Coro/Coro/State.xs (file contents):
Revision 1.267 by root, Fri Nov 14 06:29:52 2008 UTC vs.
Revision 1.277 by root, Sat Nov 15 18:40:55 2008 UTC