linux-support 0.0.25

Comprehensive Linux support for namespaces, cgroups, processes, scheduling, parsing /proc, parsing /sys, signals, hyper threads, CPUS, NUMA nodes, unusual file descriptors, PCI devices and much, much more
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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.


#[allow(missing_docs)]
#[derive(Debug)]
#[derive(Deserialize, Serialize)]
pub struct CurrentThreadDiagnostic
{
	pub current_rust_thread_identifier: NonZeroU64,
	
	pub current_rust_thread_name: Option<String>,
	
	pub current_thread_identifier: ThreadIdentifier,
	
	pub current_thread_name: ThreadName,
	
	pub current_thread_has_keep_capabilities: DiagnosticUnobtainableResult<bool>,
	
	pub current_thread_no_new_privileges: DiagnosticUnobtainableResult<bool>,
	
	pub current_thread_transparent_huge_pages_disabled: DiagnosticUnobtainableResult<bool>,
	
	pub current_thread_current_timer_slack: DiagnosticUnobtainableResult<CurrentTimerSlackNanoseconds>,
	
	pub current_thread_store_bypass_speculation_mitigation: DiagnosticUnobtainableResult<SpeculationMitigation>,
	
	pub current_thread_indirect_store_speculation_mitigation: DiagnosticUnobtainableResult<SpeculationMitigation>,
	
	pub current_thread_secure_bits: DiagnosticUnobtainableResult<SecureBits>,

	pub numa_node: NumaNode,

	pub hyper_thread: HyperThread,

	pub current_thread_memory_policy: MemoryPolicy,

	pub current_thread_memory_policy_dynamism: MemoryPolicyDynamism,

	pub current_thread_valid_numa_nodes_for_set_memory_policy_and_mbind: NumaNodes,

	pub current_thread_numa_node_for_next_interleaved_internal_kernel_page: Option<NumaNode>,

	pub current_thread_affinity: DiagnosticUnobtainableResult<Option<HyperThreads>>,

	pub capability_bounding_set: BoundingCapabilitySet,

	pub capability_ambient_set: AmbientCapabilitySet,
}

impl CurrentThreadDiagnostic
{
	fn gather() -> Self
	{
		let current_thread_identifier = ThreadIdentifier::default();
		
		let thread = current();
		
		let current_thread_name = ThreadName::get_current_thread_name();
		
		let (numa_node, hyper_thread) = current_numa_node_and_hyper_thread();
		
		let (current_thread_memory_policy, current_thread_memory_policy_dynamism) = MemoryPolicy::get_current_thread_memory_policy();
		Self
		{
			current_rust_thread_identifier: thread.id().as_u64(),
			
			current_rust_thread_name: thread.name().map(str::to_owned),
			
			current_thread_identifier,
			
			current_thread_name,
			
			current_thread_has_keep_capabilities: Self::current_thread_has_keep_capabilities(),
			
			current_thread_no_new_privileges: Self::no_new_privileges(),
			
			current_thread_transparent_huge_pages_disabled: Self::transparent_huge_pages_disabled(),
			
			current_thread_current_timer_slack: CurrentTimerSlackNanoseconds::current().map_err(DiagnosticUnobtainable::from),
			
			current_thread_store_bypass_speculation_mitigation: SpeculationMitigation::store_bypass().map_err(DiagnosticUnobtainable::from),
			
			current_thread_indirect_store_speculation_mitigation: SpeculationMitigation::indirect_branch().map_err(DiagnosticUnobtainable::from),
			
			current_thread_secure_bits: SecureBits::current().map_err(DiagnosticUnobtainable::from),
			
			numa_node,
		
			hyper_thread,
			
			current_thread_memory_policy,
			
			current_thread_memory_policy_dynamism,
			
			current_thread_valid_numa_nodes_for_set_memory_policy_and_mbind: MemoryPolicy::get_current_thread_valid_numa_nodes_for_set_memory_policy_and_mbind(),
			
			current_thread_numa_node_for_next_interleaved_internal_kernel_page: MemoryPolicy::get_current_thread_numa_node_for_next_interleaved_internal_kernel_page(),
		
			current_thread_affinity: HyperThreads::current_thread_affinity().map_err(DiagnosticUnobtainable::from),
			
			capability_bounding_set: BoundingCapabilitySet::get_for_current_thread(),
			
			capability_ambient_set: AmbientCapabilitySet::get_for_current_thread(),
		}
	}
	
	#[inline(always)]
	fn current_thread_has_keep_capabilities() -> DiagnosticUnobtainableResult<bool>
	{
		Self::prctl_boolean(PR_GET_KEEPCAPS)
	}
	
	#[inline(always)]
	fn no_new_privileges() -> DiagnosticUnobtainableResult<bool>
	{
		Self::prctl_boolean(PR_GET_NO_NEW_PRIVS)
	}
	
	#[inline(always)]
	fn transparent_huge_pages_disabled() -> DiagnosticUnobtainableResult<bool>
	{
		Self::prctl_boolean(PR_GET_THP_DISABLE)
	}
	
	#[inline(always)]
	fn prctl_boolean(operation: i32) -> DiagnosticUnobtainableResult<bool>
	{
		process_control_get_boolean(operation).map_err(DiagnosticUnobtainable::from)
	}
}