[ViewVC] Diff of: cvs/IO-AIO/AIO.xs

Comparing IO-AIO/AIO.xs (file contents):
Revision 1.242 by root, Tue Jul 12 20:46:33 2016 UTC vs.
Revision 1.252 by root, Sat Jan 6 02:11:10 2018 UTC

…		…
21	# include <sys/mman.h>	21	# include <sys/mman.h>
22	#endif	22	#endif
23		23
24	/* the incompetent fool that created musl keeps __linux__, refuses	24	/* the incompetent fool that created musl keeps __linux__, refuses
25	* to implement any linux standard apis, and also has no way to test	25	* to implement any linux standard apis, and also has no way to test
26	* for his broken iplementation. on't complain if this fails for you.	26	* for his broken iplementation. don't complain to me if this fails
		27	* for you.
27	*/	28	*/
28	#if __linux__ && (defined __GLIBC__ \|\| defined __UCLIBC__)	29	#if __linux__ && (defined __GLIBC__ \|\| defined __UCLIBC__)
29	# include <linux/fs.h>	30	# include <linux/fs.h>
30	# ifdef FS_IOC_FIEMAP	31	# ifdef FS_IOC_FIEMAP
31	# include <linux/types.h>	32	# include <linux/types.h>
…		…
103	#define expect_false(expr) expect ((expr) != 0, 0)	104	#define expect_false(expr) expect ((expr) != 0, 0)
104	#define expect_true(expr) expect ((expr) != 0, 1)	105	#define expect_true(expr) expect ((expr) != 0, 1)
105		106
106	/*****************************************************************************/	107	/*****************************************************************************/
107		108
		109	#include "libeio/config.h"
		110
		111	#if HAVE_RLIMITS
		112	#include <sys/time.h>
		113	#include <sys/resource.h>
		114	#endif
		115
108	typedef SV SV8; /* byte-sv, used for argument-checking */	116	typedef SV SV8; /* byte-sv, used for argument-checking */
109	typedef int aio_rfd; /* read file desriptor */	117	typedef int aio_rfd; /* read file desriptor */
110	typedef int aio_wfd; /* write file descriptor */	118	typedef int aio_wfd; /* write file descriptor */
111		119
112	static HV aio_stash, aio_req_stash, aio_grp_stash, aio_wd_stash;	120	static HV aio_stash, aio_req_stash, aio_grp_stash, aio_wd_stash;
…		…
118	STRLEN stroffset; \	126	STRLEN stroffset; \
119	SV *self;	127	SV *self;
120		128
121	#define EIO_NO_WRAPPERS 1	129	#define EIO_NO_WRAPPERS 1
122		130
123	#include "libeio/config.h"
124	#include "libeio/eio.h"	131	#include "libeio/eio.h"
125		132
126	static int req_invoke (eio_req *req);	133	static int req_invoke (eio_req *req);
127	#define EIO_FINISH(req) req_invoke (req)	134	#define EIO_FINISH(req) req_invoke (req)
128	static void req_destroy (eio_req *grp);	135	static void req_destroy (eio_req *grp);
…		…
161	#endif	168	#endif
162		169
163	#if PAGESIZE <= 0	170	#if PAGESIZE <= 0
164	# define PAGESIZE sysconf (_SC_PAGESIZE)	171	# define PAGESIZE sysconf (_SC_PAGESIZE)
165	#endif	172	#endif
		173
		174	/*****************************************************************************/
		175
		176	#if !_POSIX_MAPPED_FILES
		177	# define mmap(addr,length,prot,flags,fd,offs) EIO_ENOSYS ()
		178	# define munmap(addr,length) EIO_ENOSYS ()
		179	#endif
		180
		181	#if !_POSIX_MEMORY_PROTECTION
		182	# define mprotect(addr,len,prot) EIO_ENOSYS ()
		183	#endif
		184
		185	#define FOREIGN_MAGIC PERL_MAGIC_ext
		186
		187	static int ecb_cold
		188	mmap_free (pTHX_ SV sv, MAGIC mg)
		189	{
		190	int old_errno = errno;
		191	munmap (mg->mg_ptr, (size_t)mg->mg_obj);
		192	errno = old_errno;
		193
		194	mg->mg_obj = 0; /* just in case */
		195
		196	SvREADONLY_off (sv);
		197
		198	if (SvPVX (sv) != mg->mg_ptr)
		199	croak ("ERROR: IO::AIO::mmap-mapped scalar changed location, detected");
		200
		201	SvCUR_set (sv, 0);
		202	SvPVX (sv) = 0;
		203	SvOK_off (sv);
		204
		205	return 0;
		206	}
		207
		208	static MGVTBL mmap_vtbl = {
		209	0, 0, 0, 0, mmap_free
		210	};
		211
		212	static int ecb_cold
		213	sysfree_free (pTHX_ SV sv, MAGIC mg)
		214	{
		215	free (mg->mg_ptr);
		216	mg->mg_obj = 0; /* just in case */
		217
		218	SvREADONLY_off (sv);
		219
		220	if (SvPVX (sv) != mg->mg_ptr)
		221	croak ("ERROR: IO::AIO mapped scalar changed location, detected");
		222
		223	SvCUR_set (sv, 0);
		224	SvPVX (sv) = 0;
		225	SvOK_off (sv);
		226
		227	return 0;
		228	}
		229
		230	static MGVTBL sysfree_vtbl = {
		231	0, 0, 0, 0, sysfree_free
		232	};
		233
		234	/*****************************************************************************/
		235
		236	/* helper: set scalar to foreign ptr with custom free */
		237	static void
		238	sv_set_foreign (SV sv, const MGVTBL const vtbl, void *addr, IV length)
		239	{
		240	sv_force_normal (sv);
		241
		242	/* we store the length in mg_obj, as namlen is I32 :/ */
		243	sv_magicext (sv, 0, FOREIGN_MAGIC, vtbl, (char *)addr, 0)
		244	->mg_obj = (SV *)length;
		245
		246	SvUPGRADE (sv, SVt_PV); /* nop... */
		247
		248	if (SvLEN (sv))
		249	Safefree (SvPVX (sv));
		250
		251	SvPVX (sv) = (char *)addr;
		252	SvCUR_set (sv, length);
		253	SvLEN_set (sv, 0);
		254	SvPOK_only (sv);
		255	}
		256
		257	static void
		258	sv_clear_foreign (SV *sv)
		259	{
		260	/* todo: iterate over magic and only free ours, but of course */
		261	/* the perl5porters will call that (correct) behaviour buggy */
		262	sv_unmagic (sv, FOREIGN_MAGIC);
		263	}
166		264
167	/*****************************************************************************/	265	/*****************************************************************************/
168		266
169	static void	267	static void
170	fiemap (eio_req *req)	268	fiemap (eio_req *req)
…		…
590	SvSETMAGIC (req->sv2);	688	SvSETMAGIC (req->sv2);
591	PUSHs (sv_result);	689	PUSHs (sv_result);
592	}	690	}
593	break;	691	break;
594		692
		693	case EIO_SLURP:
		694	{
		695	if (req->result >= 0)
		696	{
		697	/* if length was originally not known, we steal the malloc'ed memory */
		698	if (req->flags & EIO_FLAG_PTR2_FREE)
		699	{
		700	req->flags &= ~EIO_FLAG_PTR2_FREE;
		701	sv_set_foreign (req->sv2, &sysfree_vtbl, req->ptr2, req->result);
		702	}
		703	else
		704	{
		705	SvCUR_set (req->sv2, req->result);
		706	*SvEND (req->sv2) = 0;
		707	SvPOK_only (req->sv2);
		708	}
		709
		710	SvSETMAGIC (req->sv2);
		711	}
		712
		713	PUSHs (sv_result);
		714	}
		715	break;
		716
595	case EIO_CUSTOM:	717	case EIO_CUSTOM:
596	if (req->feed == fiemap)	718	if (req->feed == fiemap)
597	{	719	{
598	#if HAVE_FIEMAP	720	#if HAVE_FIEMAP
599	if (!req->result)	721	if (!req->result)
…		…
742	create_respipe ();	864	create_respipe ();
743		865
744	if (eio_init (want_poll, done_poll) < 0)	866	if (eio_init (want_poll, done_poll) < 0)
745	croak ("IO::AIO: unable to initialise eio library");	867	croak ("IO::AIO: unable to initialise eio library");
746	}	868	}
747
748	/*****************************************************************************/
749
750	#if !_POSIX_MAPPED_FILES
751	# define mmap(addr,length,prot,flags,fd,offs) EIO_ENOSYS ()
752	# define munmap(addr,length) EIO_ENOSYS ()
753	#endif
754
755	#if !_POSIX_MEMORY_PROTECTION
756	# define mprotect(addr,len,prot) EIO_ENOSYS ()
757	#endif
758
759	#define MMAP_MAGIC PERL_MAGIC_ext
760
761	static int ecb_cold
762	mmap_free (pTHX_ SV sv, MAGIC mg)
763	{
764	int old_errno = errno;
765	munmap (mg->mg_ptr, (size_t)mg->mg_obj);
766	errno = old_errno;
767
768	mg->mg_obj = 0; /* just in case */
769
770	SvREADONLY_off (sv);
771
772	if (SvPVX (sv) != mg->mg_ptr)
773	croak ("ERROR: IO::AIO::mmap-mapped scalar changed location, detected");
774
775	SvCUR_set (sv, 0);
776	SvPVX (sv) = 0;
777	SvOK_off (sv);
778
779	return 0;
780	}
781
782	static MGVTBL mmap_vtbl = {
783	0, 0, 0, 0, mmap_free
784	};
785		869
786	/*****************************************************************************/	870	/*****************************************************************************/
787		871
788	static SV *	872	static SV *
789	get_cb (SV *cb_sv)	873	get_cb (SV *cb_sv)
…		…
923	const_niv (MADV_NORMAL , POSIX_MADV_NORMAL)	1007	const_niv (MADV_NORMAL , POSIX_MADV_NORMAL)
924	const_niv (MADV_SEQUENTIAL, POSIX_MADV_SEQUENTIAL)	1008	const_niv (MADV_SEQUENTIAL, POSIX_MADV_SEQUENTIAL)
925	const_niv (MADV_RANDOM , POSIX_MADV_RANDOM)	1009	const_niv (MADV_RANDOM , POSIX_MADV_RANDOM)
926	const_niv (MADV_WILLNEED , POSIX_MADV_WILLNEED)	1010	const_niv (MADV_WILLNEED , POSIX_MADV_WILLNEED)
927	const_niv (MADV_DONTNEED , POSIX_MADV_DONTNEED)	1011	const_niv (MADV_DONTNEED , POSIX_MADV_DONTNEED)
928	const_niv (MADV_FREE , POSIX_MADV_FREE)
929		1012
930	/* the second block will be 0 when missing */	1013	/* the second block will be 0 when missing */
931	const_iv (O_RDONLY)	1014	const_iv (O_RDONLY)
932	const_iv (O_WRONLY)	1015	const_iv (O_WRONLY)
933	const_iv (O_RDWR)	1016	const_iv (O_RDWR)
…		…
994	const_iv (MAP_NONBLOCK)	1077	const_iv (MAP_NONBLOCK)
995	const_iv (MAP_GROWSDOWN)	1078	const_iv (MAP_GROWSDOWN)
996	const_iv (MAP_32BIT)	1079	const_iv (MAP_32BIT)
997	const_iv (MAP_HUGETLB)	1080	const_iv (MAP_HUGETLB)
998	const_iv (MAP_STACK)	1081	const_iv (MAP_STACK)
		1082
		1083	const_iv (F_DUPFD_CLOEXEC)
		1084
		1085	const_iv (F_OFD_GETLK)
		1086	const_iv (F_OFD_SETLK)
		1087	const_iv (F_OFD_GETLKW)
		1088
		1089	const_iv (FIFREEZE)
		1090	const_iv (FITHAW)
		1091	const_iv (FITRIM)
		1092	const_iv (FICLONE)
		1093	const_iv (FICLONERANGE)
		1094	const_iv (FIDEDUPERANGE)
		1095
		1096	const_iv (FS_IOC_GETFLAGS)
		1097	const_iv (FS_IOC_SETFLAGS)
		1098	const_iv (FS_IOC_GETVERSION)
		1099	const_iv (FS_IOC_SETVERSION)
		1100	const_iv (FS_IOC_FIEMAP)
		1101	const_iv (FS_IOC_FSGETXATTR)
		1102	const_iv (FS_IOC_FSSETXATTR)
		1103	const_iv (FS_IOC_SET_ENCRYPTION_POLICY)
		1104	const_iv (FS_IOC_GET_ENCRYPTION_PWSALT)
		1105	const_iv (FS_IOC_GET_ENCRYPTION_POLICY)
		1106
		1107	const_iv (FS_KEY_DESCRIPTOR_SIZE)
		1108
		1109	const_iv (FS_SECRM_FL)
		1110	const_iv (FS_UNRM_FL)
		1111	const_iv (FS_COMPR_FL)
		1112	const_iv (FS_SYNC_FL)
		1113	const_iv (FS_IMMUTABLE_FL)
		1114	const_iv (FS_APPEND_FL)
		1115	const_iv (FS_NODUMP_FL)
		1116	const_iv (FS_NOATIME_FL)
		1117	const_iv (FS_DIRTY_FL)
		1118	const_iv (FS_COMPRBLK_FL)
		1119	const_iv (FS_NOCOMP_FL)
		1120	const_iv (FS_ENCRYPT_FL)
		1121	const_iv (FS_BTREE_FL)
		1122	const_iv (FS_INDEX_FL)
		1123	const_iv (FS_JOURNAL_DATA_FL)
		1124	const_iv (FS_NOTAIL_FL)
		1125	const_iv (FS_DIRSYNC_FL)
		1126	const_iv (FS_TOPDIR_FL)
		1127	const_iv (FS_FL_USER_MODIFIABLE)
		1128
		1129	const_iv (FS_XFLAG_REALTIME)
		1130	const_iv (FS_XFLAG_PREALLOC)
		1131	const_iv (FS_XFLAG_IMMUTABLE)
		1132	const_iv (FS_XFLAG_APPEND)
		1133	const_iv (FS_XFLAG_SYNC)
		1134	const_iv (FS_XFLAG_NOATIME)
		1135	const_iv (FS_XFLAG_NODUMP)
		1136	const_iv (FS_XFLAG_RTINHERIT)
		1137	const_iv (FS_XFLAG_PROJINHERIT)
		1138	const_iv (FS_XFLAG_NOSYMLINKS)
		1139	const_iv (FS_XFLAG_EXTSIZE)
		1140	const_iv (FS_XFLAG_EXTSZINHERIT)
		1141	const_iv (FS_XFLAG_NODEFRAG)
		1142	const_iv (FS_XFLAG_FILESTREAM)
		1143	const_iv (FS_XFLAG_DAX)
		1144	const_iv (FS_XFLAG_HASATTR)
999		1145
1000	const_iv (FIEMAP_FLAG_SYNC)	1146	const_iv (FIEMAP_FLAG_SYNC)
1001	const_iv (FIEMAP_FLAG_XATTR)	1147	const_iv (FIEMAP_FLAG_XATTR)
1002	const_iv (FIEMAP_FLAGS_COMPAT)	1148	const_iv (FIEMAP_FLAGS_COMPAT)
1003	const_iv (FIEMAP_EXTENT_LAST)	1149	const_iv (FIEMAP_EXTENT_LAST)
…		…
1037		1183
1038	const_eio (FALLOC_FL_KEEP_SIZE)	1184	const_eio (FALLOC_FL_KEEP_SIZE)
1039	const_eio (FALLOC_FL_PUNCH_HOLE)	1185	const_eio (FALLOC_FL_PUNCH_HOLE)
1040	const_eio (FALLOC_FL_COLLAPSE_RANGE)	1186	const_eio (FALLOC_FL_COLLAPSE_RANGE)
1041	const_eio (FALLOC_FL_ZERO_RANGE)	1187	const_eio (FALLOC_FL_ZERO_RANGE)
		1188	const_eio (FALLOC_FL_INSERT_RANGE)
		1189	const_eio (FALLOC_FL_UNSHARE_RANGE)
		1190
		1191	const_eio (RENAME_NOREPLACE)
		1192	const_eio (RENAME_EXCHANGE)
		1193	const_eio (RENAME_WHITEOUT)
1042		1194
1043	const_eio (READDIR_DENTS)	1195	const_eio (READDIR_DENTS)
1044	const_eio (READDIR_DIRS_FIRST)	1196	const_eio (READDIR_DIRS_FIRST)
1045	const_eio (READDIR_STAT_ORDER)	1197	const_eio (READDIR_STAT_ORDER)
1046	const_eio (READDIR_FOUND_UNKNOWN)	1198	const_eio (READDIR_FOUND_UNKNOWN)
…		…
1533		1685
1534	REQ_SEND;	1686	REQ_SEND;
1535	}	1687	}
1536		1688
1537	void	1689	void
		1690	aio_rename2 (SV8 oldpath, SV8 newpath, int flags = 0, SV *callback = &PL_sv_undef)
		1691	PPCODE:
		1692	{
		1693	eio_wd wd2 = 0;
		1694	dREQ;
		1695
		1696	req->type = EIO_RENAME;
		1697	req_set_path1 (req, oldpath);
		1698	req_set_path (req, newpath, &req->sv2, &req->sv4, &wd2, &req->ptr2);
		1699	req->int2 = flags;
		1700	req->int3 = (long)wd2;
		1701
		1702	REQ_SEND;
		1703	}
		1704
		1705	void
1538	aio_mknod (SV8 pathname, int mode, UV dev, SV callback = &PL_sv_undef)	1706	aio_mknod (SV8 pathname, int mode, UV dev, SV callback = &PL_sv_undef)
1539	PPCODE:	1707	PPCODE:
1540	{	1708	{
1541	dREQ;	1709	dREQ;
1542		1710
…		…
1547		1715
1548	REQ_SEND;	1716	REQ_SEND;
1549	}	1717	}
1550		1718
1551	void	1719	void
1552	aio_mtouch (SV8 data, IV offset = 0, SV length = &PL_sv_undef, int flags = 0, SV *callback = &PL_sv_undef)	1720	aio_mtouch (SV8 data, IV offset = 0, SV length = &PL_sv_undef, int flags = -1, SV *callback = &PL_sv_undef)
1553	ALIAS:	1721	ALIAS:
1554	aio_mtouch = EIO_MTOUCH	1722	aio_mtouch = EIO_MTOUCH
1555	aio_msync = EIO_MSYNC	1723	aio_msync = EIO_MSYNC
1556	PPCODE:	1724	PPCODE:
1557	{	1725	{
1558	STRLEN svlen;	1726	STRLEN svlen;
1559	char *svptr = SvPVbyte (data, svlen);	1727	char *svptr = SvPVbyte (data, svlen);
1560	UV len = SvUV (length);	1728	UV len = SvUV (length);
		1729
		1730	if (flags < 0)
		1731	flags = ix == EIO_MSYNC ? EIO_MS_SYNC : 0;
1561		1732
1562	if (offset < 0)	1733	if (offset < 0)
1563	offset += svlen;	1734	offset += svlen;
1564		1735
1565	if (offset < 0 \|\| offset > svlen)	1736	if (offset < 0 \|\| offset > svlen)
…		…
1641	req->int2 = flags;	1812	req->int2 = flags;
1642	req->int3 = SvOK (count) ? SvIV (count) : -1;	1813	req->int3 = SvOK (count) ? SvIV (count) : -1;
1643	#endif	1814	#endif
1644		1815
1645	REQ_SEND;	1816	REQ_SEND;
		1817	}
		1818
		1819	void
		1820	aio_slurp (SV pathname, off_t offset, UV length, SV8 data, SV *callback = &PL_sv_undef)
		1821	PPCODE:
		1822	{
		1823	char *svptr = 0;
		1824
		1825	sv_clear_foreign (data);
		1826
		1827	if (length) /* known length, directly read into scalar */
		1828	{
		1829	if (!SvPOK (data) \|\| SvLEN (data) >= SvCUR (data))
		1830	svptr = sv_grow (data, length + 1);
		1831	else if (SvCUR (data) < length)
		1832	croak ("length outside of scalar, and cannot grow");
		1833	else
		1834	svptr = SvPVbyte_nolen (data);
		1835	}
		1836
		1837	{
		1838	dREQ;
		1839
		1840	req->type = EIO_SLURP;
		1841	req_set_path1 (req, pathname);
		1842	req->offs = offset;
		1843	req->size = length;
		1844	req->sv2 = SvREFCNT_inc (data);
		1845	req->ptr2 = svptr;
		1846
		1847	if (!SvREADONLY (data))
		1848	{
		1849	SvREADONLY_on (data);
		1850	req->flags \|= FLAG_SV2_RO_OFF;
		1851	}
		1852
		1853	REQ_SEND;
		1854	}
1646	}	1855	}
1647		1856
1648	void	1857	void
1649	aio_busy (double delay, SV *callback = &PL_sv_undef)	1858	aio_busy (double delay, SV *callback = &PL_sv_undef)
1650	PPCODE:	1859	PPCODE:
…		…
1787	RETVAL	1996	RETVAL
1788		1997
1789	void	1998	void
1790	mmap (SV scalar, STRLEN length, int prot, int flags, SV fh = &PL_sv_undef, off_t offset = 0)	1999	mmap (SV scalar, STRLEN length, int prot, int flags, SV fh = &PL_sv_undef, off_t offset = 0)
1791	PPCODE:	2000	PPCODE:
1792	sv_unmagic (scalar, MMAP_MAGIC);	2001	sv_clear_foreign (scalar);
1793	{	2002	{
1794	int fd = SvOK (fh) ? s_fileno_croak (fh, flags & PROT_WRITE) : -1;	2003	int fd = SvOK (fh) ? s_fileno_croak (fh, flags & PROT_WRITE) : -1;
1795	void addr = (void )mmap (0, length, prot, flags, fd, offset);	2004	void addr = (void )mmap (0, length, prot, flags, fd, offset);
1796	if (addr == (void *)-1)	2005	if (addr == (void *)-1)
1797	XSRETURN_NO;	2006	XSRETURN_NO;
1798		2007
1799	sv_force_normal (scalar);	2008	sv_set_foreign (scalar, &mmap_vtbl, addr, length);
1800
1801	/* we store the length in mg_obj, as namlen is I32 :/ */
1802	sv_magicext (scalar, 0, MMAP_MAGIC, &mmap_vtbl, (char *)addr, 0)
1803	->mg_obj = (SV *)length;
1804
1805	SvUPGRADE (scalar, SVt_PV); /* nop... */
1806		2009
1807	if (!(prot & PROT_WRITE))	2010	if (!(prot & PROT_WRITE))
1808	SvREADONLY_on (scalar);	2011	SvREADONLY_on (scalar);
1809		2012
1810	if (SvLEN (scalar))
1811	Safefree (SvPVX (scalar));
1812
1813	SvPVX (scalar) = (char *)addr;
1814	SvCUR_set (scalar, length);
1815	SvLEN_set (scalar, 0);
1816	SvPOK_only (scalar);
1817
1818	XSRETURN_YES;	2013	XSRETURN_YES;
1819	}	2014	}
1820		2015
1821	void	2016	void
1822	munmap (SV *scalar)	2017	munmap (SV *scalar)
1823	CODE:	2018	CODE:
1824	sv_unmagic (scalar, MMAP_MAGIC);	2019	sv_clear_foreign (scalar);
1825		2020
1826	int	2021	int
1827	madvise (SV scalar, STRLEN offset = 0, SV length = &PL_sv_undef, IV advice_or_prot)	2022	madvise (SV scalar, STRLEN offset = 0, SV length = &PL_sv_undef, IV advice_or_prot)
1828	ALIAS:	2023	ALIAS:
1829	mprotect = 1	2024	mprotect = 1
…		…
1959	{	2154	{
1960	EXTEND (SP, 2);	2155	EXTEND (SP, 2);
1961	PUSHs (newmortalFH (fd[0], O_RDONLY));	2156	PUSHs (newmortalFH (fd[0], O_RDONLY));
1962	PUSHs (newmortalFH (fd[1], O_WRONLY));	2157	PUSHs (newmortalFH (fd[1], O_WRONLY));
1963	}	2158	}
		2159	}
		2160
		2161	UV
		2162	get_fdlimit ()
		2163	CODE:
		2164	#if HAVE_RLIMITS
		2165	struct rlimit rl;
		2166	if (0 == getrlimit (RLIMIT_NOFILE, &rl))
		2167	XSRETURN_UV (rl.rlim_cur == RLIM_INFINITY ? (UV)-1 : rl.rlim_cur);
		2168	#endif
		2169	XSRETURN_UNDEF;
		2170	OUTPUT:
		2171	RETVAL
		2172
		2173	void
		2174	min_fdlimit (UV limit = 0x7fffffffU)
		2175	CODE:
		2176	{
		2177	#if HAVE_RLIMITS
		2178	struct rlimit rl;
		2179	rlim_t orig_rlim_max;
		2180	UV bit;
		2181
		2182	if (0 != getrlimit (RLIMIT_NOFILE, &rl))
		2183	goto fail;
		2184
		2185	if (rl.rlim_cur == RLIM_INFINITY)
		2186	XSRETURN_YES;
		2187
		2188	orig_rlim_max = rl.rlim_max == RLIM_INFINITY ? ((rlim_t)0)-1 : rl.rlim_max;
		2189
		2190	if (rl.rlim_cur < limit)
		2191	{
		2192	rl.rlim_cur = limit;
		2193
		2194	if (rl.rlim_max < rl.rlim_cur && rl.rlim_max != RLIM_INFINITY)
		2195	rl.rlim_max = rl.rlim_cur;
		2196	}
		2197
		2198	if (0 == setrlimit (RLIMIT_NOFILE, &rl))
		2199	XSRETURN_YES;
		2200
		2201	if (errno == EPERM)
		2202	{
		2203	/* setlimit failed with EPERM - maybe we can't raise the hardlimit, or maybe */
		2204	/* our limit overflows a system-wide limit */
		2205	/* try an adaptive algorithm, but do not lower the hardlimit */
		2206	rl.rlim_max = 0;
		2207	for (bit = 0x40000000U; bit; bit >>= 1)
		2208	{
		2209	rl.rlim_max \|= bit;
		2210	rl.rlim_cur = rl.rlim_max;
		2211
		2212	/* nevr decrease the hard limit */
		2213	if (rl.rlim_max < orig_rlim_max)
		2214	break;
		2215
		2216	if (0 != setrlimit (RLIMIT_NOFILE, &rl))
		2217	rl.rlim_max &= ~bit; /* too high, remove bit again */
		2218	}
		2219
		2220	/* now, raise the soft limit to the max permitted */
		2221	if (0 == getrlimit (RLIMIT_NOFILE, &rl))
		2222	{
		2223	rl.rlim_cur = rl.rlim_max;
		2224	if (0 == setrlimit (RLIMIT_NOFILE, &rl))
		2225	errno = EPERM;
		2226	}
		2227	}
		2228	#endif
		2229	fail:
		2230	XSRETURN_UNDEF;
1964	}	2231	}
1965		2232
1966	void _on_next_submit (SV *cb)	2233	void _on_next_submit (SV *cb)
1967	CODE:	2234	CODE:
1968	SvREFCNT_dec (on_next_submit);	2235	SvREFCNT_dec (on_next_submit);

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Comparing IO-AIO/AIO.xs (file contents): Revision 1.242 by root, Tue Jul 12 20:46:33 2016 UTC vs. Revision 1.252 by root, Sat Jan 6 02:11:10 2018 UTC

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Comparing IO-AIO/AIO.xs (file contents):
Revision 1.242 by root, Tue Jul 12 20:46:33 2016 UTC vs.
Revision 1.252 by root, Sat Jan 6 02:11:10 2018 UTC