On Sat, Oct 6, 2012 at 5:44 AM, Daniel J Walsh <dwalsh@xxxxxxxxxx> wrote: > -----BEGIN PGP SIGNED MESSAGE----- > Hash: SHA1 > > https://bugzilla.redhat.com/show_bug.cgi?id=863258 > https://bugzilla.redhat.com/show_bug.cgi?id=863257 > -----BEGIN PGP SIGNATURE----- > Version: GnuPG v1.4.12 (GNU/Linux) > Comment: Using GnuPG with Mozilla - http://www.enigmail.net/ > > iEYEARECAAYFAlBwGYAACgkQrlYvE4MpobNXbgCeIK9DN+1wU3bO6cRneC4O7U9q > rIYAoOX+qkNDvkaZD2xPFBgVyBeCfXeD > =CRP0 > -----END PGP SIGNATURE----- Perhaps this glibc code (in sysdeps/unix/sysv/linux/malloc-sysdep.h)? static inline bool check_may_shrink_heap (void) { static int may_shrink_heap = -1; if (__builtin_expect (may_shrink_heap >= 0, 1)) return may_shrink_heap; may_shrink_heap = __libc_enable_secure; if (__builtin_expect (may_shrink_heap == 0, 1)) { int fd = open_not_cancel_2 ("/proc/sys/vm/overcommit_memory", O_RDONLY | O_CLOEXEC); if (fd >= 0) { char val; ssize_t n = read_not_cancel (fd, &val, 1); may_shrink_heap = n > 0 && val == '2'; close_not_cancel_no_status (fd); } } return may_shrink_heap; } -- Jerry James http://www.jamezone.org/ -- devel mailing list devel@xxxxxxxxxxxxxxxxxxxxxxx https://admin.fedoraproject.org/mailman/listinfo/devel
