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#[derive(Debug, Copy, Clone, PartialEq, Eq, PartialOrd, Ord, Hash)]
#[derive(Serialize, Deserialize)]
pub struct SoftAndHardResourceLimit
{
soft: ResourceLimit,
hard: ResourceLimit,
}
impl SoftAndHardResourceLimit
{
pub const BothInfinite: SoftAndHardResourceLimit = SoftAndHardResourceLimit
{
soft: ResourceLimit::Infinite,
hard: ResourceLimit::Infinite,
};
pub const BothZero: SoftAndHardResourceLimit = SoftAndHardResourceLimit
{
soft: ResourceLimit::Finite(0),
hard: ResourceLimit::Finite(0),
};
pub fn both(softAndHard: ResourceLimit) -> Self
{
Self::new(softAndHard.clone(), softAndHard)
}
pub fn new(soft: ResourceLimit, hard: ResourceLimit) -> Self
{
if soft.isInfinite() && hard.isFinite()
{
panic!("softLimit can not be infinite if hard '{}' is finite", hard.unwrap());
}
if soft.isFinite() && hard.isFinite()
{
assert!(soft.unwrap() <= hard.unwrap(), "soft '{:?}' must be less than or the same as hard '{:?}'", soft, hard);
}
SoftAndHardResourceLimit
{
soft: soft,
hard: hard,
}
}
#[inline(always)]
pub fn hardLimit(&self) -> &ResourceLimit
{
&self.hard
}
pub fn set(&self, resourceIdentifier: i32)
{
let value = rlimit64
{
rlim_cur: self.soft.unwrap(),
rlim_max: self.hard.unwrap(),
};
match unsafe { ::libc::setrlimit64(resourceIdentifier, &value) }
{
0 => (),
-1 => match errno().0
{
E::EPERM => panic!("Permission denied or tried to increase MaximumNumberOfFileDescriptors above /proc/sys/fs/nr_open"),
E::EINVAL => panic!("Limit was too large or bad resource id"),
E::EFAULT => panic!("Bad pointer"),
illegal @ _ => panic!("Illegal errno '{}' from setrlimit64()", illegal),
},
illegal @ _ => panic!("Illegal result '{}' from setrlimit64()", illegal),
}
}
pub fn get(resourceIdentifier: i32) -> Self
{
let mut value = rlimit64
{
rlim_cur: 0,
rlim_max: 0,
};
match unsafe { ::libc::getrlimit64(resourceIdentifier, &mut value) }
{
0 => (),
-1 => match errno().0
{
E::EPERM => panic!("Permission denied"),
E::EINVAL => panic!("Bad resource id"),
E::EFAULT => panic!("Bad pointer"),
illegal @ _ => panic!("Illegal errno '{}' from setrlimit64()", illegal),
},
illegal @ _ => panic!("Illegal result '{}' from setrlimit64()", illegal),
};
SoftAndHardResourceLimit
{
soft: ResourceLimit::convert(value.rlim_cur),
hard: ResourceLimit::convert(value.rlim_max),
}
}
}