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

Comparing Coro/Coro/State.xs (file contents):
Revision 1.282 by root, Sun Nov 16 10:33:08 2008 UTC vs.
Revision 1.289 by root, Mon Nov 17 08:25:06 2008 UTC

…		…
95	# define GV_NOTQUAL 0	95	# define GV_NOTQUAL 0
96	#endif	96	#endif
97	#ifndef newSV	97	#ifndef newSV
98	# define newSV(l) NEWSV(0,l)	98	# define newSV(l) NEWSV(0,l)
99	#endif	99	#endif
		100	#ifndef CvISXSUB_on
		101	# define CvISXSUB_on(cv) (void)cv
		102	#endif
100		103
101	/* 5.8.7 */	104	/* 5.8.7 */
102	#ifndef SvRV_set	105	#ifndef SvRV_set
103	# define SvRV_set(s,v) SvRV(s) = (v)	106	# define SvRV_set(s,v) SvRV(s) = (v)
104	#endif	107	#endif
…		…
147	# if CORO_PTHREAD	150	# if CORO_PTHREAD
148	static void *coro_thx;	151	static void *coro_thx;
149	# endif	152	# endif
150	#endif	153	#endif
151		154
152	/* helper storage struct for Coro::AIO */
153	struct io_state
154	{
155	AV *res;
156	int errorno;
157	I32 laststype; /* U16 in 5.10.0 */
158	int laststatval;
159	Stat_t statcache;
160	};
161
162	static double (nvtime)(); / so why doesn't it take void? */	155	static double (nvtime)(); / so why doesn't it take void? */
163		156
164	static U32 cctx_gen;	157	static U32 cctx_gen;
165	static size_t cctx_stacksize = CORO_STACKSIZE;	158	static size_t cctx_stacksize = CORO_STACKSIZE;
166	static struct CoroAPI coroapi;	159	static struct CoroAPI coroapi;
167	static AV main_mainstack; / used to differentiate between $main and others */	160	static AV main_mainstack; / used to differentiate between $main and others */
168	static JMPENV *main_top_env;	161	static JMPENV *main_top_env;
169	static HV coro_state_stash, coro_stash;	162	static HV coro_state_stash, coro_stash;
170	static volatile SV coro_mortal; / will be freed/thrown after next transfer */	163	static volatile SV coro_mortal; / will be freed/thrown after next transfer */
171	static volatile struct coro *transfer_next;
172		164
173	static GV irsgv; / $/ */	165	static GV irsgv; / $/ */
174	static GV stdoutgv; / STDOUT /	166	static GV stdoutgv; / STDOUT /
175	static SV *rv_diehook;	167	static SV *rv_diehook;
176	static SV *rv_warnhook;	168	static SV *rv_warnhook;
…		…
242	/* this is a structure representing a perl-level coroutine */	234	/* this is a structure representing a perl-level coroutine */
243	struct coro {	235	struct coro {
244	/* the C coroutine allocated to this perl coroutine, if any */	236	/* the C coroutine allocated to this perl coroutine, if any */
245	coro_cctx *cctx;	237	coro_cctx *cctx;
246		238
247	/* process data */	239	/* state data */
248	struct CoroSLF slf_frame; /* saved slf frame */	240	struct CoroSLF slf_frame; /* saved slf frame */
249	AV *mainstack;	241	AV *mainstack;
250	perl_slots slot; / basically the saved sp */	242	perl_slots slot; / basically the saved sp */
251		243
252	AV args; / data associated with this coroutine (initial args) */	244	AV args; / data associated with this coroutine (initial args) */
…		…
270	};	262	};
271		263
272	typedef struct coro *Coro__State;	264	typedef struct coro *Coro__State;
273	typedef struct coro *Coro__State_or_hashref;	265	typedef struct coro *Coro__State_or_hashref;
274		266
		267	/* the following variables are effectively part of the perl context */
		268	/* and get copied between struct coro and these variables */
		269	/* the mainr easonw e don't support windows process emulation */
275	static struct CoroSLF slf_frame; /* the current slf frame */	270	static struct CoroSLF slf_frame; /* the current slf frame */
		271	static SV *coro_throw;
276		272
277	/ Coro ******************************************************************/	273	/ Coro ******************************************************************/
278		274
279	#define PRIO_MAX 3	275	#define PRIO_MAX 3
280	#define PRIO_HIGH 1	276	#define PRIO_HIGH 1
…		…
381	SvREFCNT_dec (av); /* sv_magicext increased the refcount */	377	SvREFCNT_dec (av); /* sv_magicext increased the refcount */
382		378
383	return 0;	379	return 0;
384	}	380	}
385		381
386	#define CORO_MAGIC_type_cv PERL_MAGIC_ext	382	#define CORO_MAGIC_type_cv 26
387	#define CORO_MAGIC_type_state PERL_MAGIC_ext	383	#define CORO_MAGIC_type_state PERL_MAGIC_ext
388		384
389	static MGVTBL coro_cv_vtbl = {	385	static MGVTBL coro_cv_vtbl = {
390	0, 0, 0, 0,	386	0, 0, 0, 0,
391	coro_cv_free	387	coro_cv_free
392	};	388	};
393		389
		390	#define CORO_MAGIC_NN(sv, type) \
		391	(expect_true (SvMAGIC (sv)->mg_type == type) \
		392	? SvMAGIC (sv) \
		393	: mg_find (sv, type))
		394
394	#define CORO_MAGIC(sv, type) \	395	#define CORO_MAGIC(sv, type) \
395	expect_true (SvMAGIC (sv)) \	396	(expect_true (SvMAGIC (sv)) \
396	? expect_true (SvMAGIC (sv)->mg_type == type) \	397	? CORO_MAGIC_NN (sv, type) \
397	? SvMAGIC (sv) \
398	: mg_find (sv, type) \
399	: 0	398	: 0)
400		399
401	#define CORO_MAGIC_cv(cv) CORO_MAGIC (((SV *)(cv)), CORO_MAGIC_type_cv)	400	#define CORO_MAGIC_cv(cv) CORO_MAGIC (((SV *)(cv)), CORO_MAGIC_type_cv)
402	#define CORO_MAGIC_state(sv) CORO_MAGIC (((SV *)(sv)), CORO_MAGIC_type_state)	401	#define CORO_MAGIC_state(sv) CORO_MAGIC_NN (((SV *)(sv)), CORO_MAGIC_type_state)
403		402
404	INLINE struct coro *	403	INLINE struct coro *
405	SvSTATE_ (pTHX_ SV *coro)	404	SvSTATE_ (pTHX_ SV *coro)
406	{	405	{
407	HV *stash;	406	HV *stash;
…		…
425	return (struct coro *)mg->mg_ptr;	424	return (struct coro *)mg->mg_ptr;
426	}	425	}
427		426
428	#define SvSTATE(sv) SvSTATE_ (aTHX_ (sv))	427	#define SvSTATE(sv) SvSTATE_ (aTHX_ (sv))
429		428
430	/* fastert than SvSTATE, but expects a coroutine hv */	429	/* faster than SvSTATE, but expects a coroutine hv */
431	INLINE struct coro *	430	#define SvSTATE_hv(hv) ((struct coro )CORO_MAGIC_NN ((SV )hv, CORO_MAGIC_type_state)->mg_ptr)
432	SvSTATE_hv (SV *sv)
433	{
434	MAGIC *mg = expect_true (SvMAGIC (sv)->mg_type == CORO_MAGIC_type_state)
435	? SvMAGIC (sv)
436	: mg_find (sv, CORO_MAGIC_type_state);
437
438	return (struct coro *)mg->mg_ptr;
439	}
440
441	#define SvSTATE_current SvSTATE_hv (SvRV (coro_current))	431	#define SvSTATE_current SvSTATE_hv (SvRV (coro_current))
442		432
443	/* the next two functions merely cache the padlists */	433	/* the next two functions merely cache the padlists */
444	static void	434	static void
445	get_padlist (pTHX_ CV *cv)	435	get_padlist (pTHX_ CV *cv)
…		…
514	}	504	}
515		505
516	PUTBACK;	506	PUTBACK;
517	}	507	}
518		508
519	slf_frame = c->slf_frame;	509	slf_frame = c->slf_frame;
		510	coro_throw = c->throw;
520	}	511	}
521		512
522	static void	513	static void
523	save_perl (pTHX_ Coro__State c)	514	save_perl (pTHX_ Coro__State c)
524	{	515	{
		516	c->throw = coro_throw;
525	c->slf_frame = slf_frame;	517	c->slf_frame = slf_frame;
526		518
527	{	519	{
528	dSP;	520	dSP;
529	I32 cxix = cxstack_ix;	521	I32 cxix = cxstack_ix;
…		…
822	slf_check_nop (pTHX_ struct CoroSLF *frame)	814	slf_check_nop (pTHX_ struct CoroSLF *frame)
823	{	815	{
824	return 0;	816	return 0;
825	}	817	}
826		818
827	static void	819	static void NOINLINE /* noinline to keep it out of the transfer fast path */
828	coro_setup (pTHX_ struct coro *coro)	820	coro_setup (pTHX_ struct coro *coro)
829	{	821	{
830	/*	822	/*
831	* emulate part of the perl startup here.	823	* emulate part of the perl startup here.
832	*/	824	*/
…		…
875	/* this newly created coroutine might be run on an existing cctx which most	867	/* this newly created coroutine might be run on an existing cctx which most
876	* likely was suspended in pp_slf, so we have to emulate entering pp_slf here.	868	* likely was suspended in pp_slf, so we have to emulate entering pp_slf here.
877	*/	869	*/
878	slf_frame.prepare = prepare_nop; /* provide a nop function for an eventual pp_slf */	870	slf_frame.prepare = prepare_nop; /* provide a nop function for an eventual pp_slf */
879	slf_frame.check = slf_check_nop; /* signal pp_slf to not repeat */	871	slf_frame.check = slf_check_nop; /* signal pp_slf to not repeat */
		872
		873	coro_throw = coro->throw;
880	}	874	}
881		875
882	static void	876	static void
883	coro_destruct (pTHX_ struct coro *coro)	877	coro_destruct (pTHX_ struct coro *coro)
884	{	878	{
…		…
908		902
909	SvREFCNT_dec (PL_diehook);	903	SvREFCNT_dec (PL_diehook);
910	SvREFCNT_dec (PL_warnhook);	904	SvREFCNT_dec (PL_warnhook);
911		905
912	SvREFCNT_dec (coro->saved_deffh);	906	SvREFCNT_dec (coro->saved_deffh);
913	SvREFCNT_dec (coro->throw);	907	SvREFCNT_dec (coro_throw);
914		908
915	coro_destruct_stacks (aTHX);	909	coro_destruct_stacks (aTHX);
916	}	910	}
917		911
918	INLINE void	912	INLINE void
…		…
1087		1081
1088	/* the tail of transfer: execute stuff we can only do after a transfer */	1082	/* the tail of transfer: execute stuff we can only do after a transfer */
1089	INLINE void	1083	INLINE void
1090	transfer_tail (pTHX)	1084	transfer_tail (pTHX)
1091	{	1085	{
1092	struct coro next = (struct coro )transfer_next;
1093	assert (!(transfer_next = 0)); /* just used for the side effect when asserts are enabled */
1094	assert (("FATAL: next coroutine was zero in transfer_tail (please report)", next));
1095
1096	free_coro_mortal (aTHX);	1086	free_coro_mortal (aTHX);
1097
1098	if (expect_false (next->throw))
1099	{
1100	SV *exception = sv_2mortal (next->throw);
1101
1102	next->throw = 0;
1103	sv_setsv (ERRSV, exception);
1104	croak (0);
1105	}
1106	}	1087	}
1107		1088
1108	/*	1089	/*
1109	* this is a _very_ stripped down perl interpreter ;)	1090	* this is a _very_ stripped down perl interpreter ;)
1110	*/	1091	*/
…		…
1125		1106
1126	/* inject a fake subroutine call to cctx_init */	1107	/* inject a fake subroutine call to cctx_init */
1127	cctx_prepare (aTHX_ (coro_cctx *)arg);	1108	cctx_prepare (aTHX_ (coro_cctx *)arg);
1128		1109
1129	/* cctx_run is the alternative tail of transfer() */	1110	/* cctx_run is the alternative tail of transfer() */
1130	/* TODO: throwing an exception here might be deadly, VERIFY */
1131	transfer_tail (aTHX);	1111	transfer_tail (aTHX);
1132		1112
1133	/* somebody or something will hit me for both perl_run and PL_restartop */	1113	/* somebody or something will hit me for both perl_run and PL_restartop */
1134	PL_restartop = PL_op;	1114	PL_restartop = PL_op;
1135	perl_run (PL_curinterp);	1115	perl_run (PL_curinterp);
…		…
1291	/ coroutine switching ***************************************************/	1271	/ coroutine switching ***************************************************/
1292		1272
1293	static void	1273	static void
1294	transfer_check (pTHX_ struct coro prev, struct coro next)	1274	transfer_check (pTHX_ struct coro prev, struct coro next)
1295	{	1275	{
		1276	/* TODO: throwing up here is considered harmful */
		1277
1296	if (expect_true (prev != next))	1278	if (expect_true (prev != next))
1297	{	1279	{
1298	if (expect_false (!(prev->flags & (CF_RUNNING \| CF_NEW))))	1280	if (expect_false (!(prev->flags & (CF_RUNNING \| CF_NEW))))
1299	croak ("Coro::State::transfer called with non-running/new prev Coro::State, but can only transfer from running or new states,");	1281	croak ("Coro::State::transfer called with non-running/new prev Coro::State, but can only transfer from running or new states,");
1300		1282
…		…
1310	#endif	1292	#endif
1311	}	1293	}
1312	}	1294	}
1313		1295
1314	/* always use the TRANSFER macro */	1296	/* always use the TRANSFER macro */
1315	static void NOINLINE	1297	static void NOINLINE /* noinline so we have a fixed stackframe */
1316	transfer (pTHX_ struct coro prev, struct coro next, int force_cctx)	1298	transfer (pTHX_ struct coro prev, struct coro next, int force_cctx)
1317	{	1299	{
1318	dSTACKLEVEL;	1300	dSTACKLEVEL;
1319		1301
1320	/* sometimes transfer is only called to set idle_sp */	1302	/* sometimes transfer is only called to set idle_sp */
…		…
1377	++next->usecount;	1359	++next->usecount;
1378		1360
1379	if (expect_true (!next->cctx))	1361	if (expect_true (!next->cctx))
1380	next->cctx = cctx_get (aTHX);	1362	next->cctx = cctx_get (aTHX);
1381		1363
1382	assert (("FATAL: transfer_next already nonzero in Coro (please report)", !transfer_next));
1383	transfer_next = next;
1384
1385	if (expect_false (prev__cctx != next->cctx))	1364	if (expect_false (prev__cctx != next->cctx))
1386	{	1365	{
1387	prev__cctx->top_env = PL_top_env;	1366	prev__cctx->top_env = PL_top_env;
1388	PL_top_env = next->cctx->top_env;	1367	PL_top_env = next->cctx->top_env;
1389	coro_transfer (&prev__cctx->cctx, &next->cctx->cctx);	1368	coro_transfer (&prev__cctx->cctx, &next->cctx->cctx);
…		…
1705	if (coro->flags & CF_RUNNING)	1684	if (coro->flags & CF_RUNNING)
1706	PL_runops = RUNOPS_DEFAULT;	1685	PL_runops = RUNOPS_DEFAULT;
1707	else	1686	else
1708	coro->slot->runops = RUNOPS_DEFAULT;	1687	coro->slot->runops = RUNOPS_DEFAULT;
1709	}	1688	}
		1689	}
		1690
		1691	/*****************************************************************************/
		1692	/* schedule-like-function opcode (SLF) */
		1693
		1694	static UNOP slf_restore; /* restore stack as entersub did, for first-re-run */
		1695	static const CV *slf_cv;
		1696	static SV **slf_argv;
		1697	static int slf_argc, slf_arga; /* count, allocated */
		1698	static I32 slf_ax; /* top of stack, for restore */
		1699
		1700	/* this restores the stack in the case we patched the entersub, to */
		1701	/* recreate the stack frame as perl will on following calls */
		1702	/* since entersub cleared the stack */
		1703	static OP *
		1704	pp_restore (pTHX)
		1705	{
		1706	int i;
		1707	SV **SP = PL_stack_base + slf_ax;
		1708
		1709	PUSHMARK (SP);
		1710
		1711	EXTEND (SP, slf_argc + 1);
		1712
		1713	for (i = 0; i < slf_argc; ++i)
		1714	PUSHs (sv_2mortal (slf_argv [i]));
		1715
		1716	PUSHs ((SV *)CvGV (slf_cv));
		1717
		1718	RETURNOP (slf_restore.op_first);
		1719	}
		1720
		1721	static void
		1722	slf_prepare_set_stacklevel (pTHX_ struct coro_transfer_args *ta)
		1723	{
		1724	prepare_set_stacklevel (ta, (struct coro_cctx *)slf_frame.data);
		1725	}
		1726
		1727	static void
		1728	slf_init_set_stacklevel (pTHX_ struct CoroSLF frame, CV cv, SV **arg, int items)
		1729	{
		1730	assert (("FATAL: set_stacklevel needs the coro cctx as sole argument", items == 1));
		1731
		1732	frame->prepare = slf_prepare_set_stacklevel;
		1733	frame->check = slf_check_nop;
		1734	frame->data = (void *)SvIV (arg [0]);
		1735	}
		1736
		1737	static void
		1738	slf_prepare_transfer (pTHX_ struct coro_transfer_args *ta)
		1739	{
		1740	SV arg = (SV )slf_frame.data;
		1741
		1742	prepare_transfer (aTHX_ ta, arg [0], arg [1]);
		1743	}
		1744
		1745	static void
		1746	slf_init_transfer (pTHX_ struct CoroSLF frame, CV cv, SV **arg, int items)
		1747	{
		1748	if (items != 2)
		1749	croak ("Coro::State::transfer (prev, next) expects two arguments, not %d,", items);
		1750
		1751	frame->prepare = slf_prepare_transfer;
		1752	frame->check = slf_check_nop;
		1753	frame->data = (void )arg; / let's hope it will stay valid */
		1754	}
		1755
		1756	static void
		1757	slf_init_schedule (pTHX_ struct CoroSLF frame, CV cv, SV **arg, int items)
		1758	{
		1759	frame->prepare = prepare_schedule;
		1760	frame->check = slf_check_nop;
		1761	}
		1762
		1763	static void
		1764	slf_init_cede (pTHX_ struct CoroSLF frame, CV cv, SV **arg, int items)
		1765	{
		1766	frame->prepare = prepare_cede;
		1767	frame->check = slf_check_nop;
		1768	}
		1769
		1770	static void
		1771	slf_init_cede_notself (pTHX_ struct CoroSLF frame, CV cv, SV **arg, int items)
		1772	{
		1773	frame->prepare = prepare_cede_notself;
		1774	frame->check = slf_check_nop;
		1775	}
		1776
		1777	/* we hijack an hopefully unused CV flag for our purposes */
		1778	#define CVf_SLF 0x4000
		1779
		1780	/*
		1781	* these not obviously related functions are all rolled into one
		1782	* function to increase chances that they all will call transfer with the same
		1783	* stack offset
		1784	* SLF stands for "schedule-like-function".
		1785	*/
		1786	static OP *
		1787	pp_slf (pTHX)
		1788	{
		1789	I32 checkmark; /* mark SP to see how many elements check has pushed */
		1790
		1791	/* set up the slf frame, unless it has already been set-up */
		1792	/* the latter happens when a new coro has been started */
		1793	/* or when a new cctx was attached to an existing coroutine */
		1794	if (expect_true (!slf_frame.prepare))
		1795	{
		1796	/* first iteration */
		1797	dSP;
		1798	SV **arg = PL_stack_base + TOPMARK + 1;
		1799	int items = SP - arg; /* args without function object */
		1800	SV gv = sp;
		1801
		1802	/* do a quick consistency check on the "function" object, and if it isn't */
		1803	/* for us, divert to the real entersub */
		1804	if (SvTYPE (gv) != SVt_PVGV
		1805	\|\| !GvCV (gv)
		1806	\|\| !(CvFLAGS (GvCV (gv)) & CVf_SLF))
		1807	return PL_ppaddr[OP_ENTERSUB](aTHX);
		1808
		1809	if (!(PL_op->op_flags & OPf_STACKED))
		1810	{
		1811	/* ampersand-form of call, use @_ instead of stack */
		1812	AV *av = GvAV (PL_defgv);
		1813	arg = AvARRAY (av);
		1814	items = AvFILLp (av) + 1;
		1815	}
		1816
		1817	/* now call the init function, which needs to set up slf_frame */
		1818	((coro_slf_cb)CvXSUBANY (GvCV (gv)).any_ptr)
		1819	(aTHX_ &slf_frame, GvCV (gv), arg, items);
		1820
		1821	/* pop args */
		1822	SP = PL_stack_base + POPMARK;
		1823
		1824	PUTBACK;
		1825	}
		1826
		1827	/* now that we have a slf_frame, interpret it! */
		1828	/* we use a callback system not to make the code needlessly */
		1829	/* complicated, but so we can run multiple perl coros from one cctx */
		1830
		1831	do
		1832	{
		1833	struct coro_transfer_args ta;
		1834
		1835	slf_frame.prepare (aTHX_ &ta);
		1836	TRANSFER (ta, 0);
		1837
		1838	checkmark = PL_stack_sp - PL_stack_base;
		1839	}
		1840	while (slf_frame.check (aTHX_ &slf_frame));
		1841
		1842	slf_frame.prepare = 0; /* invalidate the frame, we are done processing it */
		1843
		1844	/* return value handling - mostly like entersub */
		1845	{
		1846	dSP;
		1847	SV **bot = PL_stack_base + checkmark;
		1848	int gimme = GIMME_V;
		1849
		1850	/* make sure we put something on the stack in scalar context */
		1851	if (gimme == G_SCALAR)
		1852	{
		1853	if (sp == bot)
		1854	XPUSHs (&PL_sv_undef);
		1855
		1856	SP = bot + 1;
		1857	}
		1858
		1859	PUTBACK;
		1860	}
		1861
		1862	/* exception handling */
		1863	if (expect_false (coro_throw))
		1864	{
		1865	SV *exception = sv_2mortal (coro_throw);
		1866
		1867	coro_throw = 0;
		1868	sv_setsv (ERRSV, exception);
		1869	croak (0);
		1870	}
		1871
		1872	return NORMAL;
		1873	}
		1874
		1875	static void
		1876	api_execute_slf (pTHX_ CV *cv, coro_slf_cb init_cb, I32 ax)
		1877	{
		1878	int i;
		1879	SV **arg = PL_stack_base + ax;
		1880	int items = PL_stack_sp - arg + 1;
		1881
		1882	assert (("FATAL: SLF call with illegal CV value", !CvANON (cv)));
		1883
		1884	if (PL_op->op_ppaddr != PL_ppaddr [OP_ENTERSUB]
		1885	&& PL_op->op_ppaddr != pp_slf)
		1886	croak ("FATAL: Coro SLF calls can only be made normally, not via goto or any other means, caught");
		1887
		1888	CvFLAGS (cv) \|= CVf_SLF;
		1889	CvXSUBANY (cv).any_ptr = (void *)init_cb;
		1890	slf_cv = cv;
		1891
		1892	/* we patch the op, and then re-run the whole call */
		1893	/* we have to put the same argument on the stack for this to work */
		1894	/* and this will be done by pp_restore */
		1895	slf_restore.op_next = (OP *)&slf_restore;
		1896	slf_restore.op_type = OP_CUSTOM;
		1897	slf_restore.op_ppaddr = pp_restore;
		1898	slf_restore.op_first = PL_op;
		1899
		1900	slf_ax = ax - 1; /* undo the ax++ inside dAXMARK */
		1901
		1902	if (PL_op->op_flags & OPf_STACKED)
		1903	{
		1904	if (items > slf_arga)
		1905	{
		1906	slf_arga = items;
		1907	free (slf_argv);
		1908	slf_argv = malloc (slf_arga * sizeof (SV *));
		1909	}
		1910
		1911	slf_argc = items;
		1912
		1913	for (i = 0; i < items; ++i)
		1914	slf_argv [i] = SvREFCNT_inc (arg [i]);
		1915	}
		1916	else
		1917	slf_argc = 0;
		1918
		1919	PL_op->op_ppaddr = pp_slf;
		1920	PL_op->op_type = OP_CUSTOM; /* maybe we should leave it at entersub? */
		1921
		1922	PL_op = (OP *)&slf_restore;
1710	}	1923	}
1711		1924
1712	/*****************************************************************************/	1925	/*****************************************************************************/
1713	/* PerlIO::cede */	1926	/* PerlIO::cede */
1714		1927
…		…
1783	PerlIOBuf_get_cnt,	1996	PerlIOBuf_get_cnt,
1784	PerlIOBuf_set_ptrcnt,	1997	PerlIOBuf_set_ptrcnt,
1785	};	1998	};
1786		1999
1787	/*****************************************************************************/	2000	/*****************************************************************************/
1788		2001	/* Coro::Semaphore */
1789	static const CV slf_cv; / for quick consistency check */
1790
1791	static UNOP slf_restore; /* restore stack as entersub did, for first-re-run */
1792	static SV *slf_arg0;
1793	static SV *slf_arg1;
1794	static SV *slf_arg2;
1795
1796	/* this restores the stack in the case we patched the entersub, to */
1797	/* recreate the stack frame as perl will on following calls */
1798	/* since entersub cleared the stack */
1799	static OP *
1800	pp_restore (pTHX)
1801	{
1802	dSP;
1803
1804	PUSHMARK (SP);
1805
1806	EXTEND (SP, 3);
1807	if (slf_arg0) PUSHs (sv_2mortal (slf_arg0));
1808	if (slf_arg1) PUSHs (sv_2mortal (slf_arg1));
1809	if (slf_arg2) PUSHs (sv_2mortal (slf_arg2));
1810	PUSHs ((SV *)CvGV (slf_cv));
1811
1812	RETURNOP (slf_restore.op_first);
1813	}
1814
1815	static void
1816	slf_prepare_set_stacklevel (pTHX_ struct coro_transfer_args *ta)
1817	{
1818	prepare_set_stacklevel (ta, (struct coro_cctx *)slf_frame.data);
1819	}
1820
1821	static void
1822	slf_init_set_stacklevel (pTHX_ struct CoroSLF frame, CV cv, SV **arg, int items)
1823	{
1824	assert (("FATAL: set_stacklevel needs the coro cctx as sole argument", items == 1));
1825
1826	frame->prepare = slf_prepare_set_stacklevel;
1827	frame->check = slf_check_nop;
1828	frame->data = (void *)SvIV (arg [0]);
1829	}
1830
1831	static void
1832	slf_prepare_transfer (pTHX_ struct coro_transfer_args *ta)
1833	{
1834	SV arg = (SV )slf_frame.data;
1835
1836	prepare_transfer (aTHX_ ta, arg [0], arg [1]);
1837	}
1838
1839	static void
1840	slf_init_transfer (pTHX_ struct CoroSLF frame, CV cv, SV **arg, int items)
1841	{
1842	if (items != 2)
1843	croak ("Coro::State::transfer (prev, next) expects two arguments, not %d,", items);
1844
1845	frame->prepare = slf_prepare_transfer;
1846	frame->check = slf_check_nop;
1847	frame->data = (void )arg; / let's hope it will stay valid */
1848	}
1849
1850	static void
1851	slf_init_schedule (pTHX_ struct CoroSLF frame, CV cv, SV **arg, int items)
1852	{
1853	frame->prepare = prepare_schedule;
1854	frame->check = slf_check_nop;
1855	}
1856
1857	static void
1858	slf_init_cede (pTHX_ struct CoroSLF frame, CV cv, SV **arg, int items)
1859	{
1860	frame->prepare = prepare_cede;
1861	frame->check = slf_check_nop;
1862	}
1863
1864	static void
1865	slf_init_cede_notself (pTHX_ struct CoroSLF frame, CV cv, SV **arg, int items)
1866	{
1867	frame->prepare = prepare_cede_notself;
1868	frame->check = slf_check_nop;
1869	}
1870
1871	/* we hijack an hopefully unused CV flag for our purposes */
1872	#define CVf_SLF 0x4000
1873
1874	/*
1875	* these not obviously related functions are all rolled into one
1876	* function to increase chances that they all will call transfer with the same
1877	* stack offset
1878	* SLF stands for "schedule-like-function".
1879	*/
1880	static OP *
1881	pp_slf (pTHX)
1882	{
1883	I32 checkmark; /* mark SP to see how many elements check has pushed */
1884
1885	/* set up the slf frame, unless it has already been set-up */
1886	/* the latter happens when a new coro has been started */
1887	/* or when a new cctx was attached to an existing coroutine */
1888	if (expect_true (!slf_frame.prepare))
1889	{
1890	/* first iteration */
1891	dSP;
1892	SV **arg = PL_stack_base + TOPMARK + 1;
1893	int items = SP - arg; /* args without function object */
1894	SV gv = sp;
1895
1896	/* do a quick consistency check on the "function" object, and if it isn't */
1897	/* for us, divert to the real entersub */
1898	if (SvTYPE (gv) != SVt_PVGV \|\| !(CvFLAGS (GvCV (gv)) & CVf_SLF))
1899	return PL_ppaddr[OP_ENTERSUB](aTHX);
1900
1901	/* pop args */
1902	SP = PL_stack_base + POPMARK;
1903
1904	if (!(PL_op->op_flags & OPf_STACKED))
1905	{
1906	/* ampersand-form of call, use @_ instead of stack */
1907	AV *av = GvAV (PL_defgv);
1908	arg = AvARRAY (av);
1909	items = AvFILLp (av) + 1;
1910	}
1911
1912	PUTBACK;
1913
1914	/* now call the init function, which needs to set up slf_frame */
1915	((coro_slf_cb)CvXSUBANY (GvCV (gv)).any_ptr)
1916	(aTHX_ &slf_frame, GvCV (gv), arg, items);
1917	}
1918
1919	/* now that we have a slf_frame, interpret it! */
1920	/* we use a callback system not to make the code needlessly */
1921	/* complicated, but so we can run multiple perl coros from one cctx */
1922
1923	do
1924	{
1925	struct coro_transfer_args ta;
1926
1927	slf_frame.prepare (aTHX_ &ta);
1928	TRANSFER (ta, 0);
1929
1930	checkmark = PL_stack_sp - PL_stack_base;
1931	}
1932	while (slf_frame.check (aTHX_ &slf_frame));
1933
1934	{
1935	dSP;
1936	SV **bot = PL_stack_base + checkmark;
1937	int gimme = GIMME_V;
1938
1939	slf_frame.prepare = 0; /* invalidate the frame, so it gets initialised again next time */
1940
1941	/* make sure we put something on the stack in scalar context */
1942	if (gimme == G_SCALAR)
1943	{
1944	if (sp == bot)
1945	XPUSHs (&PL_sv_undef);
1946
1947	SP = bot + 1;
1948	}
1949
1950	PUTBACK;
1951	}
1952
1953	return NORMAL;
1954	}
1955
1956	static void
1957	api_execute_slf (pTHX_ CV cv, coro_slf_cb init_cb, SV *arg, int items)
1958	{
1959	assert (("FATAL: SLF call with illegal CV value", !CvANON (cv)));
1960
1961	if (PL_op->op_ppaddr != PL_ppaddr [OP_ENTERSUB]
1962	&& PL_op->op_ppaddr != pp_slf)
1963	croak ("FATAL: Coro SLF calls can only be made normally, not via goto or any other means, caught");
1964
1965	if (items > 3)
1966	croak ("Coro only supports up to three arguments to SLF functions currently (not %d), caught", items);
1967
1968	CvFLAGS (cv) \|= CVf_SLF;
1969	CvXSUBANY (cv).any_ptr = (void *)init_cb;
1970	slf_cv = cv;
1971
1972	/* we patch the op, and then re-run the whole call */
1973	/* we have to put the same argument on the stack for this to work */
1974	/* and this will be done by pp_restore */
1975	slf_restore.op_next = (OP *)&slf_restore;
1976	slf_restore.op_type = OP_CUSTOM;
1977	slf_restore.op_ppaddr = pp_restore;
1978	slf_restore.op_first = PL_op;
1979
1980	slf_arg0 = items > 0 ? SvREFCNT_inc (arg [0]) : 0;
1981	slf_arg1 = items > 1 ? SvREFCNT_inc (arg [1]) : 0;
1982	slf_arg2 = items > 2 ? SvREFCNT_inc (arg [2]) : 0;
1983
1984	PL_op->op_ppaddr = pp_slf;
1985
1986	PL_op = (OP *)&slf_restore;
1987	}
1988
1989	/*****************************************************************************/
1990		2002
1991	static void	2003	static void
1992	coro_semaphore_adjust (pTHX_ AV *av, IV adjust)	2004	coro_semaphore_adjust (pTHX_ AV *av, IV adjust)
1993	{	2005	{
1994	SV *count_sv = AvARRAY (av)[0];	2006	SV *count_sv = AvARRAY (av)[0];
…		…
2080	frame->check = slf_check_semaphore_down;	2092	frame->check = slf_check_semaphore_down;
2081		2093
2082	}	2094	}
2083		2095
2084	/*****************************************************************************/	2096	/*****************************************************************************/
		2097	/* gensub: simple closure generation utility */
2085		2098
2086	#define GENSUB_ARG CvXSUBANY (cv).any_ptr	2099	#define GENSUB_ARG CvXSUBANY (cv).any_ptr
2087		2100
2088	/* create a closure from XS, returns a code reference */	2101	/* create a closure from XS, returns a code reference */
2089	/* the arg can be accessed via GENSUB_ARG from the callback */	2102	/* the arg can be accessed via GENSUB_ARG from the callback */
2090	/* the callback must use dXSARGS/XSRETURN */	2103	/* the callback must use dXSARGS/XSRETURN */
2091	static SV *	2104	static SV *
2092	gensub (pTHX_ void (xsub)(pTHX_ CV ), void *arg)	2105	gensub (pTHX_ void (xsub)(pTHX_ CV ), void *arg)
2093	{	2106	{
2094	CV cv = (CV )NEWSV (0, 0);	2107	CV cv = (CV )newSV (0);
2095		2108
2096	sv_upgrade ((SV *)cv, SVt_PVCV);	2109	sv_upgrade ((SV *)cv, SVt_PVCV);
2097		2110
2098	CvANON_on (cv);	2111	CvANON_on (cv);
2099	CvISXSUB_on (cv);	2112	CvISXSUB_on (cv);
2100	CvXSUB (cv) = xsub;	2113	CvXSUB (cv) = xsub;
2101	GENSUB_ARG = arg;	2114	GENSUB_ARG = arg;
2102		2115
2103	return newRV_noinc ((SV *)cv);	2116	return newRV_noinc ((SV *)cv);
		2117	}
		2118
		2119	/*****************************************************************************/
		2120	/* Coro::AIO */
		2121
		2122	#define CORO_MAGIC_type_aio PERL_MAGIC_ext
		2123
		2124	/* helper storage struct */
		2125	struct io_state
		2126	{
		2127	int errorno;
		2128	I32 laststype; /* U16 in 5.10.0 */
		2129	int laststatval;
		2130	Stat_t statcache;
		2131	};
		2132
		2133	static void
		2134	coro_aio_callback (pTHX_ CV *cv)
		2135	{
		2136	dXSARGS;
		2137	AV state = (AV )GENSUB_ARG;
		2138	SV *coro = av_pop (state);
		2139	SV *data_sv = newSV (sizeof (struct io_state));
		2140
		2141	av_extend (state, items);
		2142
		2143	sv_upgrade (data_sv, SVt_PV);
		2144	SvCUR_set (data_sv, sizeof (struct io_state));
		2145	SvPOK_only (data_sv);
		2146
		2147	{
		2148	struct io_state data = (struct io_state )SvPVX (data_sv);
		2149
		2150	data->errorno = errno;
		2151	data->laststype = PL_laststype;
		2152	data->laststatval = PL_laststatval;
		2153	data->statcache = PL_statcache;
		2154	}
		2155
		2156	/* now build the result vector out of all the parameters and the data_sv */
		2157	{
		2158	int i;
		2159
		2160	for (i = 0; i < items; ++i)
		2161	av_push (state, SvREFCNT_inc_NN (ST (i)));
		2162	}
		2163
		2164	av_push (state, data_sv);
		2165
		2166	api_ready (aTHX_ coro);
		2167	SvREFCNT_dec (coro);
		2168	SvREFCNT_dec ((AV *)state);
		2169	}
		2170
		2171	static int
		2172	slf_check_aio_req (pTHX_ struct CoroSLF *frame)
		2173	{
		2174	AV state = (AV )frame->data;
		2175
		2176	/* one element that is an RV? repeat! */
		2177	if (AvFILLp (state) == 0 && SvROK (AvARRAY (state)[0]))
		2178	return 1;
		2179
		2180	/* restore status */
		2181	{
		2182	SV *data_sv = av_pop (state);
		2183	struct io_state data = (struct io_state )SvPVX (data_sv);
		2184
		2185	errno = data->errorno;
		2186	PL_laststype = data->laststype;
		2187	PL_laststatval = data->laststatval;
		2188	PL_statcache = data->statcache;
		2189
		2190	SvREFCNT_dec (data_sv);
		2191	}
		2192
		2193	/* push result values */
		2194	{
		2195	dSP;
		2196	int i;
		2197
		2198	EXTEND (SP, AvFILLp (state) + 1);
		2199	for (i = 0; i <= AvFILLp (state); ++i)
		2200	PUSHs (sv_2mortal (SvREFCNT_inc_NN (AvARRAY (state)[i])));
		2201
		2202	PUTBACK;
		2203	}
		2204
		2205	return 0;
		2206	}
		2207
		2208	static void
		2209	slf_init_aio_req (pTHX_ struct CoroSLF frame, CV cv, SV **arg, int items)
		2210	{
		2211	AV state = (AV )sv_2mortal ((SV *)newAV ());
		2212	SV *coro_hv = SvRV (coro_current);
		2213	struct coro *coro = SvSTATE_hv (coro_hv);
		2214
		2215	/* put our coroutine id on the state arg */
		2216	av_push (state, SvREFCNT_inc_NN (coro_hv));
		2217
		2218	/* first see whether we have a non-zero priority and set it as AIO prio */
		2219	if (coro->prio)
		2220	{
		2221	dSP;
		2222
		2223	static SV *prio_cv;
		2224	static SV *prio_sv;
		2225
		2226	if (expect_false (!prio_cv))
		2227	{
		2228	prio_cv = (SV *)get_cv ("IO::AIO::aioreq_pri", 0);
		2229	prio_sv = newSViv (0);
		2230	}
		2231
		2232	PUSHMARK (SP);
		2233	sv_setiv (prio_sv, coro->prio);
		2234	XPUSHs (prio_sv);
		2235
		2236	PUTBACK;
		2237	call_sv (prio_cv, G_VOID \| G_DISCARD);
		2238	}
		2239
		2240	/* now call the original request */
		2241	{
		2242	dSP;
		2243	CV req = (CV )CORO_MAGIC_NN ((SV *)cv, CORO_MAGIC_type_aio)->mg_obj;
		2244	int i;
		2245
		2246	PUSHMARK (SP);
		2247
		2248	/* first push all args to the stack */
		2249	EXTEND (SP, items + 1);
		2250
		2251	for (i = 0; i < items; ++i)
		2252	PUSHs (arg [i]);
		2253
		2254	/* now push the callback closure */
		2255	PUSHs (sv_2mortal (gensub (aTHX_ coro_aio_callback, (void )SvREFCNT_inc_NN ((SV )state))));
		2256
		2257	/* now call the AIO function - we assume our request is uncancelable */
		2258	PUTBACK;
		2259	call_sv ((SV *)req, G_VOID \| G_DISCARD);
		2260	}
		2261
		2262	/* now that the requets is going, we loop toll we have a result */
		2263	frame->data = (void *)state;
		2264	frame->prepare = prepare_schedule;
		2265	frame->check = slf_check_aio_req;
		2266	}
		2267
		2268	static void
		2269	coro_aio_req_xs (pTHX_ CV *cv)
		2270	{
		2271	dXSARGS;
		2272
		2273	CORO_EXECUTE_SLF_XS (slf_init_aio_req);
		2274
		2275	XSRETURN_EMPTY;
2104	}	2276	}
2105		2277
2106	/*****************************************************************************/	2278	/*****************************************************************************/
2107		2279
2108	MODULE = Coro::State PACKAGE = Coro::State PREFIX = api_	2280	MODULE = Coro::State PACKAGE = Coro::State PREFIX = api_
…		…
2208	RETVAL	2380	RETVAL
2209		2381
2210	void	2382	void
2211	_set_stacklevel (...)	2383	_set_stacklevel (...)
2212	CODE:	2384	CODE:
2213	api_execute_slf (aTHX_ cv, slf_init_set_stacklevel, &ST (0), items);	2385	CORO_EXECUTE_SLF_XS (slf_init_set_stacklevel);
2214		2386
2215	void	2387	void
2216	transfer (...)	2388	transfer (...)
2217	PROTOTYPE: $$	2389	PROTOTYPE: $$
2218	CODE:	2390	CODE:
2219	api_execute_slf (aTHX_ cv, slf_init_transfer, &ST (0), items);	2391	CORO_EXECUTE_SLF_XS (slf_init_transfer);
2220		2392
2221	bool	2393	bool
2222	_destroy (SV *coro_sv)	2394	_destroy (SV *coro_sv)
2223	CODE:	2395	CODE:
2224	RETVAL = coro_state_destroy (aTHX_ SvSTATE (coro_sv));	2396	RETVAL = coro_state_destroy (aTHX_ SvSTATE (coro_sv));
…		…
2342		2514
2343	void	2515	void
2344	throw (Coro::State self, SV *throw = &PL_sv_undef)	2516	throw (Coro::State self, SV *throw = &PL_sv_undef)
2345	PROTOTYPE: $;$	2517	PROTOTYPE: $;$
2346	CODE:	2518	CODE:
		2519	{
		2520	struct coro *current = SvSTATE_current;
		2521	SV **throwp = self == current ? &coro_throw : &self->throw;
2347	SvREFCNT_dec (self->throw);	2522	SvREFCNT_dec (*throwp);
2348	self->throw = SvOK (throw) ? newSVsv (throw) : 0;	2523	*throwp = SvOK (throw) ? newSVsv (throw) : 0;
		2524	}
2349		2525
2350	void	2526	void
2351	api_trace (SV *coro, int flags = CC_TRACE \| CC_TRACE_SUB)	2527	api_trace (SV *coro, int flags = CC_TRACE \| CC_TRACE_SUB)
2352	PROTOTYPE: $;$	2528	PROTOTYPE: $;$
2353	C_ARGS: aTHX_ coro, flags	2529	C_ARGS: aTHX_ coro, flags
…		…
2402	SV dst = ix ? (SV )&self->slot->defav : (SV **)&self->slot->defsv;	2578	SV dst = ix ? (SV )&self->slot->defav : (SV **)&self->slot->defsv;
2403		2579
2404	SV tmp = src; src = dst; *dst = tmp;	2580	SV tmp = src; src = dst; *dst = tmp;
2405	}	2581	}
2406		2582
		2583
2407	MODULE = Coro::State PACKAGE = Coro	2584	MODULE = Coro::State PACKAGE = Coro
2408		2585
2409	BOOT:	2586	BOOT:
2410	{	2587	{
2411	int i;	2588	int i;
…		…
2447	}	2624	}
2448		2625
2449	void	2626	void
2450	schedule (...)	2627	schedule (...)
2451	CODE:	2628	CODE:
2452	api_execute_slf (aTHX_ cv, slf_init_schedule, &ST (0), 0);	2629	CORO_EXECUTE_SLF_XS (slf_init_schedule);
2453		2630
2454	void	2631	void
2455	cede (...)	2632	cede (...)
2456	CODE:	2633	CODE:
2457	api_execute_slf (aTHX_ cv, slf_init_cede, &ST (0), 0);	2634	CORO_EXECUTE_SLF_XS (slf_init_cede);
2458		2635
2459	void	2636	void
2460	cede_notself (...)	2637	cede_notself (...)
2461	CODE:	2638	CODE:
2462	api_execute_slf (aTHX_ cv, slf_init_cede_notself, &ST (0), 0);	2639	CORO_EXECUTE_SLF_XS (slf_init_cede_notself);
2463		2640
2464	void	2641	void
2465	_set_current (SV *current)	2642	_set_current (SV *current)
2466	PROTOTYPE: $	2643	PROTOTYPE: $
2467	CODE:	2644	CODE:
…		…
2555		2732
2556	void	2733	void
2557	_pool_2 (SV *cb)	2734	_pool_2 (SV *cb)
2558	CODE:	2735	CODE:
2559	{	2736	{
2560	struct coro *coro = SvSTATE_current;	2737	HV hv = (HV )SvRV (coro_current);
		2738	struct coro coro = SvSTATE_hv ((SV )hv);
2561		2739
2562	sv_setsv (cb, &PL_sv_undef);	2740	sv_setsv (cb, &PL_sv_undef);
2563		2741
2564	SvREFCNT_dec ((SV )PL_defoutgv); PL_defoutgv = (GV )coro->saved_deffh;	2742	SvREFCNT_dec ((SV )PL_defoutgv); PL_defoutgv = (GV )coro->saved_deffh;
2565	coro->saved_deffh = 0;	2743	coro->saved_deffh = 0;
…		…
2572	SvREFCNT_dec (old);	2750	SvREFCNT_dec (old);
2573	croak ("\3async_pool terminate\2\n");	2751	croak ("\3async_pool terminate\2\n");
2574	}	2752	}
2575		2753
2576	av_clear (GvAV (PL_defgv));	2754	av_clear (GvAV (PL_defgv));
2577	hv_store ((HV *)SvRV (coro_current), "desc", sizeof ("desc") - 1,	2755	hv_store (hv, "desc", sizeof ("desc") - 1,
2578	newSVpvn ("[async_pool idle]", sizeof ("[async_pool idle]") - 1), 0);	2756	newSVpvn ("[async_pool idle]", sizeof ("[async_pool idle]") - 1), 0);
2579		2757
2580	coro->prio = 0;	2758	coro->prio = 0;
2581		2759
2582	if (coro->cctx && (coro->cctx->flags & CC_TRACE))	2760	if (coro->cctx && (coro->cctx->flags & CC_TRACE))
…		…
2584		2762
2585	av_push (av_async_pool, newSVsv (coro_current));	2763	av_push (av_async_pool, newSVsv (coro_current));
2586	}	2764	}
2587		2765
2588		2766
2589	MODULE = Coro::State PACKAGE = Coro::AIO
2590
2591	void
2592	_get_state (SV *self)
2593	PROTOTYPE: $
2594	PPCODE:
2595	{
2596	AV *defav = GvAV (PL_defgv);
2597	AV *av = newAV ();
2598	int i;
2599	SV *data_sv = newSV (sizeof (struct io_state));
2600	struct io_state data = (struct io_state )SvPVX (data_sv);
2601	SvCUR_set (data_sv, sizeof (struct io_state));
2602	SvPOK_only (data_sv);
2603
2604	data->errorno = errno;
2605	data->laststype = PL_laststype;
2606	data->laststatval = PL_laststatval;
2607	data->statcache = PL_statcache;
2608
2609	av_extend (av, AvFILLp (defav) + 1 + 1);
2610
2611	for (i = 0; i <= AvFILLp (defav); ++i)
2612	av_push (av, SvREFCNT_inc_NN (AvARRAY (defav)[i]));
2613
2614	av_push (av, data_sv);
2615
2616	XPUSHs (sv_2mortal (newRV_noinc ((SV *)av)));
2617
2618	api_ready (aTHX_ self);
2619	}
2620
2621	void
2622	_set_state (SV *state)
2623	PROTOTYPE: $
2624	PPCODE:
2625	{
2626	AV av = (AV )SvRV (state);
2627	struct io_state data = (struct io_state )SvPVX (AvARRAY (av)[AvFILLp (av)]);
2628	int i;
2629
2630	errno = data->errorno;
2631	PL_laststype = data->laststype;
2632	PL_laststatval = data->laststatval;
2633	PL_statcache = data->statcache;
2634
2635	EXTEND (SP, AvFILLp (av));
2636	for (i = 0; i < AvFILLp (av); ++i)
2637	PUSHs (sv_2mortal (SvREFCNT_inc_NN (AvARRAY (av)[i])));
2638	}
2639
2640
2641	MODULE = Coro::State PACKAGE = Coro::AnyEvent
2642
2643	BOOT:
2644	sv_activity = coro_get_sv (aTHX_ "Coro::AnyEvent::ACTIVITY", TRUE);
2645
2646	void
2647	_schedule (...)
2648	CODE:
2649	{
2650	static int incede;
2651
2652	api_cede_notself (aTHX);
2653
2654	++incede;
2655	while (coro_nready >= incede && api_cede (aTHX))
2656	;
2657
2658	sv_setsv (sv_activity, &PL_sv_undef);
2659	if (coro_nready >= incede)
2660	{
2661	PUSHMARK (SP);
2662	PUTBACK;
2663	call_pv ("Coro::AnyEvent::_activity", G_DISCARD \| G_EVAL);
2664	SPAGAIN;
2665	}
2666
2667	--incede;
2668	}
2669
2670
2671	MODULE = Coro::State PACKAGE = PerlIO::cede	2767	MODULE = Coro::State PACKAGE = PerlIO::cede
2672		2768
2673	BOOT:	2769	BOOT:
2674	PerlIO_define_layer (aTHX_ &PerlIO_cede);	2770	PerlIO_define_layer (aTHX_ &PerlIO_cede);
		2771
2675		2772
2676	MODULE = Coro::State PACKAGE = Coro::Semaphore	2773	MODULE = Coro::State PACKAGE = Coro::Semaphore
2677		2774
2678	SV *	2775	SV *
2679	new (SV klass, SV count_ = 0)	2776	new (SV klass, SV count_ = 0)
2680	CODE:	2777	CODE:
2681	{	2778	{
2682	/* a semaphore contains a counter IV in $sem->[0] and any waiters after that */	2779	/* a semaphore contains a counter IV in $sem->[0] and any waiters after that */
2683	AV *av = newAV ();	2780	AV *av = newAV ();
		2781	SV **ary;
		2782
		2783	/* unfortunately, building manually saves memory */
		2784	Newx (ary, 2, SV *);
		2785	AvALLOC (av) = ary;
		2786	AvARRAY (av) = ary;
		2787	AvMAX (av) = 1;
		2788	AvFILLp (av) = 0;
2684	av_push (av, newSViv (count_ && SvOK (count_) ? SvIV (count_) : 1));	2789	ary [0] = newSViv (count_ && SvOK (count_) ? SvIV (count_) : 1);
		2790
2685	RETVAL = sv_bless (newRV_noinc ((SV *)av), GvSTASH (CvGV (cv)));	2791	RETVAL = sv_bless (newRV_noinc ((SV *)av), GvSTASH (CvGV (cv)));
2686	}	2792	}
2687	OUTPUT:	2793	OUTPUT:
2688	RETVAL	2794	RETVAL
2689		2795
…		…
2702	coro_semaphore_adjust (aTHX_ (AV *)SvRV (self), ix ? adjust : 1);	2808	coro_semaphore_adjust (aTHX_ (AV *)SvRV (self), ix ? adjust : 1);
2703		2809
2704	void	2810	void
2705	down (SV *self)	2811	down (SV *self)
2706	CODE:	2812	CODE:
2707	api_execute_slf (aTHX_ cv, slf_init_semaphore_down, &ST (0), 1);	2813	CORO_EXECUTE_SLF_XS (slf_init_semaphore_down);
2708		2814
2709	void	2815	void
2710	try (SV *self)	2816	try (SV *self)
2711	PPCODE:	2817	PPCODE:
2712	{	2818	{
…		…
2739	for (i = 1; i <= AvFILLp (av); ++i)	2845	for (i = 1; i <= AvFILLp (av); ++i)
2740	PUSHs (newSVsv (AvARRAY (av)[i]));	2846	PUSHs (newSVsv (AvARRAY (av)[i]));
2741	}	2847	}
2742	}	2848	}
2743		2849
		2850
		2851	MODULE = Coro::State PACKAGE = Coro::AnyEvent
		2852
		2853	BOOT:
		2854	sv_activity = coro_get_sv (aTHX_ "Coro::AnyEvent::ACTIVITY", TRUE);
		2855
		2856	void
		2857	_schedule (...)
		2858	CODE:
		2859	{
		2860	static int incede;
		2861
		2862	api_cede_notself (aTHX);
		2863
		2864	++incede;
		2865	while (coro_nready >= incede && api_cede (aTHX))
		2866	;
		2867
		2868	sv_setsv (sv_activity, &PL_sv_undef);
		2869	if (coro_nready >= incede)
		2870	{
		2871	PUSHMARK (SP);
		2872	PUTBACK;
		2873	call_pv ("Coro::AnyEvent::_activity", G_DISCARD \| G_EVAL);
		2874	SPAGAIN;
		2875	}
		2876
		2877	--incede;
		2878	}
		2879
		2880
		2881	MODULE = Coro::State PACKAGE = Coro::AIO
		2882
		2883	void
		2884	_register (char target, char proto, SV *req)
		2885	CODE:
		2886	{
		2887	HV *st;
		2888	GV *gvp;
		2889	CV *req_cv = sv_2cv (req, &st, &gvp, 0);
		2890	/* newXSproto doesn't return the CV on 5.8 */
		2891	CV *slf_cv = newXS (target, coro_aio_req_xs, __FILE__);
		2892	sv_setpv ((SV *)slf_cv, proto);
		2893	sv_magicext ((SV )slf_cv, (SV )req_cv, CORO_MAGIC_type_aio, 0, 0, 0);
		2894	}
		2895

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Comparing Coro/Coro/State.xs (file contents): Revision 1.282 by root, Sun Nov 16 10:33:08 2008 UTC vs. Revision 1.289 by root, Mon Nov 17 08:25:06 2008 UTC

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Comparing Coro/Coro/State.xs (file contents):
Revision 1.282 by root, Sun Nov 16 10:33:08 2008 UTC vs.
Revision 1.289 by root, Mon Nov 17 08:25:06 2008 UTC