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// This file is part of linux-support. It is subject to the license terms in the COPYRIGHT file found in the top-level directory of this distribution and at https://raw.githubusercontent.com/lemonrock/linux-support/master/COPYRIGHT. No part of linux-support, including this file, may be copied, modified, propagated, or distributed except according to the terms contained in the COPYRIGHT file.
// Copyright © 2020 The developers of linux-support. See the COPYRIGHT file in the top-level directory of this distribution and at https://raw.githubusercontent.com/lemonrock/linux-support/master/COPYRIGHT.
/// Receive low water mark.
///
/// `recv()`, `recvmsg()` and `read()` for stream (ie TCP) sockets will not return data until this low water mark is met.
///
/// The default is 1 (one byte).
#[derive(Debug, Copy, Clone, PartialEq, Eq, PartialOrd, Ord, Hash)]
#[derive(Deserialize, Serialize)]
#[repr(transparent)]
pub struct ReceiveLowWaterMarkInBytes(NonZeroU32);
impl TryFrom<NonZeroU32> for ReceiveLowWaterMarkInBytes
{
type Error = ParseNumberError;
#[inline(always)]
fn try_from(value: NonZeroU32) -> Result<Self, Self::Error>
{
if unlikely!(value > Self::InclusiveMaximum.0)
{
Err(ParseNumberError::TooLarge)
}
else
{
Ok(Self(value))
}
}
}
impl Default for ReceiveLowWaterMarkInBytes
{
#[inline(always)]
fn default() -> Self
{
Self::Default
}
}
impl ReceiveLowWaterMarkInBytes
{
/// Default.
pub const Default: Self = Self(new_non_zero_u32(1));
/// Minimum.
pub const InclusiveMinimum: Self = Self::Default;
/// Maximum.
pub const InclusiveMaximum: Self = Self(new_non_zero_u32(i32::MAX as u32));
}