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