nvml 0.0.2

A mid-level wrapper around PMDK (the persistent memory development kit), formely NVML
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// This file is part of dpdk. 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/dpdk/master/COPYRIGHT. No part of dpdk, including this file, may be copied, modified, propagated, or distributed except according to the terms contained in the COPYRIGHT file.
// Copyright © 2017 The developers of dpdk. See the COPYRIGHT file in the top-level directory of this distribution and at https://raw.githubusercontent.com/lemonrock/dpdk/master/COPYRIGHT.


#[derive(Debug, Clone, PartialEq, Eq, PartialOrd, Ord, Hash)]
pub struct GenericError
{
	osErrorNumber: i32,
	lastErrorMessageOnThisThread: Result<String, LastErrorMessageOnThisThreadIsInvalidError>,
	functionName: &'static str,
}

impl Display for GenericError
{
	fn fmt(&self, formatter: &mut Formatter) -> Result<(), fmt::Error>
	{
		let lastErrorMessageOnThisThread = self.lastErrorMessageOnThisThread.as_ref();
		if likely(lastErrorMessageOnThisThread.is_ok())
		{
			write!(formatter, "Generic Error Number '{}': '{}'", self.osErrorNumber, lastErrorMessageOnThisThread.unwrap())
		}
		else
		{
			write!(formatter, "Generic Error Number '{}': No message ({})", self.osErrorNumber, lastErrorMessageOnThisThread.unwrap_err())
		}
	}
}

impl error::Error for GenericError
{
	fn description(&self) -> &str
	{
		"Generic Error"
	}
	
	fn cause(&self) -> Option<&error::Error>
	{
		None
	}
}

impl GenericError
{
	#[inline(always)]
	pub fn new(osErrorNumber: i32, errorFunction: ErrorFunction, functionName: &'static str) -> Self
	{
		let lastErrorMessageOnThisThread = LastErrorMessageOnThisThreadIsInvalidError::lastErrorMessageOnThisThread(errorFunction);
		
		if likely(osErrorNumber > 0)
		{
			Self
			{
				osErrorNumber: osErrorNumber,
				lastErrorMessageOnThisThread: lastErrorMessageOnThisThread,
				functionName: functionName,
			}
		}
		else
		{
			if likely(lastErrorMessageOnThisThread.is_ok())
			{
				panic!("Invalid errno value '{}' from {} (last error message was '{}')", osErrorNumber, functionName, lastErrorMessageOnThisThread.unwrap());
			}
			else
			{
				panic!("Invalid errno value '{}' from {} (last error message was unavailable because '{}')", osErrorNumber, functionName, lastErrorMessageOnThisThread.unwrap_err());
			}
		}
	}
	
	#[inline(always)]
	pub fn panic(self) -> !
	{
		panic!("Unexpected or fatal error; {}", self)
	}
	
	#[inline(always)]
	pub fn isEINVAL(&self) -> bool
	{
		self.osErrorNumber == E::EINVAL
	}
}