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union U {
x: &'static u8,
y: &'static libc::c_char,
}
#[allow(non_upper_case_globals)]
#[cfg_attr(prefixed, export_name = "_rjem_malloc_conf")]
#[cfg_attr(not(prefixed), no_mangle)]
pub static malloc_conf: Option<&'static libc::c_char> = Some(unsafe {
U {
x: &b"stats_print_opts:mdal\0"[0],
}
.y
});
#[test]
fn malloc_conf_set() {
unsafe {
assert_eq!(tikv_jemalloc_sys::malloc_conf, malloc_conf);
let mut ptr: *const libc::c_char = std::ptr::null();
let mut ptr_len: libc::size_t = std::mem::size_of::<*const libc::c_char>() as libc::size_t;
let r = tikv_jemalloc_sys::mallctl(
&b"opt.stats_print_opts\0"[0] as *const _ as *const libc::c_char,
&mut ptr as *mut *const _ as *mut libc::c_void,
&mut ptr_len as *mut _,
std::ptr::null_mut(),
0,
);
assert_eq!(r, 0);
assert!(!ptr.is_null());
let s = std::ffi::CStr::from_ptr(ptr).to_string_lossy().into_owned();
assert!(
s.contains("mdal"),
"opt.stats_print_opts: \"{}\" (len = {})",
s,
s.len()
);
}
}
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