1
 2
 3
 4
 5
 6
 7
 8
 9
10
11
12
13
14
15
16
17

//! System calls.

/// Change the data segment. See `man brk`.
///
/// On success, the new program break is returned. On failure, the old program break is returned.
///
/// # Note
///
/// This is the `brk` **syscall**, not the library function.
pub unsafe fn brk(ptr: *const u8) -> *const u8 {
    syscall!(BRK, ptr) as *const u8
}

/// Voluntarily give a time slice to the scheduler.
pub fn sched_yield() -> usize {
    unsafe { syscall!(SCHED_YIELD) }
}