1
  2
  3
  4
  5
  6
  7
  8
  9
 10
 11
 12
 13
 14
 15
 16
 17
 18
 19
 20
 21
 22
 23
 24
 25
 26
 27
 28
 29
 30
 31
 32
 33
 34
 35
 36
 37
 38
 39
 40
 41
 42
 43
 44
 45
 46
 47
 48
 49
 50
 51
 52
 53
 54
 55
 56
 57
 58
 59
 60
 61
 62
 63
 64
 65
 66
 67
 68
 69
 70
 71
 72
 73
 74
 75
 76
 77
 78
 79
 80
 81
 82
 83
 84
 85
 86
 87
 88
 89
 90
 91
 92
 93
 94
 95
 96
 97
 98
 99
100
101

// 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 © 2016-2019 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.


/// A process common configuration execution error.
#[derive(Debug)]
pub enum ProcessCommonConfigurationExecutionError
{
	/// Process niceness adjustment failed.
	ProcessNicenessAdjustmentFailed(ProcessNicenessAdjustmentError),

	/// Process affinity setting failed.
	CouldNotSetCurrentProcessAffinity(io::Error),

	/// Could not load kernel modules (explanation in tuple argument).
	CouldNotLoadKernelModules(String),

	/// Could not write system control values.
	CouldNotWriteSystemControlValues(io::Error),

	/// Rescan of all PCI buses and devices failed.
	RescanOfAllPciBusesAndDevices(io::Error),

	/// CPU features failed validation (explanation in tuple argument).
	CpuFeaturesValidationFailed(String),

	/// Linux kernel command line failed validation (explanation in tuple argument).
	LinuxKernelCommandLineValidationFailed(String),

	/// Could not set work queue hyper thread affinity to online shared hyper threads.
	///
	/// Shared hyper threads are those shared with the operating system and other processes (ie not isolated).
	CouldNotSetWorkQueueHyperThreadAffinityToOnlineSharedHyperThreads(io::Error),

	/// Could not force watchdog hyper thread affinity to online shared hyper threads.
	///
	/// Shared hyper threads are those shared with the operating system and other processes (ie not isolated).
	CouldNotForceWatchdogHyperThreadAffinityToOnlineSharedHyperThreads(io::Error),

	/// Could not disable Transparent Huge Pages (THP).
	CouldNotDisableTransparentHugePages(DisableTransparentHugePagesError),
}

impl Display for ProcessCommonConfigurationExecutionError
{
	#[inline(always)]
	fn fmt(&self, f: &mut Formatter) -> fmt::Result
	{
		<ProcessCommonConfigurationExecutionError as Debug>::fmt(self, f)
	}
}

impl error::Error for ProcessCommonConfigurationExecutionError
{
	#[inline(always)]
	fn source(&self) ->  Option<&(error::Error + 'static)>
	{
		use self::ProcessCommonConfigurationExecutionError::*;

		match self
		{
			&ProcessNicenessAdjustmentFailed(ref error) => Some(error),

			&CouldNotSetCurrentProcessAffinity(ref error) => Some(error),

			&CouldNotLoadKernelModules(_) => None,

			&CouldNotWriteSystemControlValues(ref error) => Some(error),

			&RescanOfAllPciBusesAndDevices(ref error) => Some(error),

			&CpuFeaturesValidationFailed(_) => None,

			&LinuxKernelCommandLineValidationFailed(_) => None,

			&CouldNotSetWorkQueueHyperThreadAffinityToOnlineSharedHyperThreads(ref error) => Some(error),

			&CouldNotForceWatchdogHyperThreadAffinityToOnlineSharedHyperThreads(ref error) => Some(error),

			&CouldNotDisableTransparentHugePages(ref error) => Some(error),
		}
	}
}

impl From<ProcessNicenessAdjustmentError> for ProcessCommonConfigurationExecutionError
{
	#[inline(always)]
	fn from(error: ProcessNicenessAdjustmentError) -> Self
	{
		ProcessCommonConfigurationExecutionError::ProcessNicenessAdjustmentFailed(error)
	}
}

impl From<DisableTransparentHugePagesError> for ProcessCommonConfigurationExecutionError
{
	#[inline(always)]
	fn from(error: DisableTransparentHugePagesError) -> Self
	{
		ProcessCommonConfigurationExecutionError::CouldNotDisableTransparentHugePages(error)
	}
}