llvm::SingleThreadExecutor Class Reference

A non-threaded implementation. More...

#include "llvm/Support/ThreadPool.h"

Inheritance diagram for llvm::SingleThreadExecutor:

Public Member Functions
	SingleThreadExecutor (ThreadPoolStrategy ignored={})
	Construct a non-threaded pool, ignoring using the hardware strategy.
	~SingleThreadExecutor () override
	Blocking destructor: the pool will first execute the pending tasks.
void	wait () override
	Blocking wait for all the tasks to execute first.
void	wait (ThreadPoolTaskGroup &Group) override
	Blocking wait for only all the tasks in the given group to complete.
unsigned	getMaxConcurrency () const override
	Returns always 1: there is no concurrency.
unsigned	getThreadCount () const
bool	isWorkerThread () const
	Returns true if the current thread is a worker thread of this thread pool.
Public Member Functions inherited from llvm::ThreadPoolInterface
virtual	~ThreadPoolInterface ()
	Destroying the pool will drain the pending tasks and wait.
virtual void	wait ()=0
	Blocking wait for all the threads to complete and the queue to be empty.
virtual void	wait (ThreadPoolTaskGroup &Group)=0
	Blocking wait for only all the threads in the given group to complete.
virtual unsigned	getMaxConcurrency () const =0
	Returns the maximum number of worker this pool can eventually grow to.
template<typename Function , typename... Args>
auto	async (Function &&F, Args &&...ArgList)
	Asynchronous submission of a task to the pool.
template<typename Function , typename... Args>
auto	async (ThreadPoolTaskGroup &Group, Function &&F, Args &&...ArgList)
	Overload, task will be in the given task group.
template<typename Func >
auto	async (Func &&F) -> std::shared_future< decltype(F())>
	Asynchronous submission of a task to the pool.
template<typename Func >
auto	async (ThreadPoolTaskGroup &Group, Func &&F) -> std::shared_future< decltype(F())>

Detailed Description

A non-threaded implementation.

Definition at line 218 of file ThreadPool.h.

Constructor & Destructor Documentation

SingleThreadExecutor()

SingleThreadExecutor::SingleThreadExecutor

(

ThreadPoolStrategy

ignored = {}

)

Construct a non-threaded pool, ignoring using the hardware strategy.

Definition at line 193 of file ThreadPool.cpp.

References llvm::ThreadPoolStrategy::compute_thread_count(), llvm::errs(), and ThreadCount.

~SingleThreadExecutor()

SingleThreadExecutor::~SingleThreadExecutor ( )

override

Blocking destructor: the pool will first execute the pending tasks.

Definition at line 220 of file ThreadPool.cpp.

References wait().

Member Function Documentation

getMaxConcurrency()

unsigned llvm::SingleThreadExecutor::getMaxConcurrency ( ) const

inlineoverridevirtual

Returns always 1: there is no concurrency.

Implements llvm::ThreadPoolInterface.

Definition at line 233 of file ThreadPool.h.

Referenced by llvm::lto::ThinBackendProc::getThreadCount().

getThreadCount()

unsigned llvm::SingleThreadExecutor::getThreadCount ( ) const

inline

Definition at line 237 of file ThreadPool.h.

isWorkerThread()

bool SingleThreadExecutor::isWorkerThread

(

)

const

Returns true if the current thread is a worker thread of this thread pool.

Definition at line 216 of file ThreadPool.cpp.

References llvm::report_fatal_error().

wait() [1/2]

void SingleThreadExecutor::wait ( )

overridevirtual

Blocking wait for all the tasks to execute first.

Implements llvm::ThreadPoolInterface.

Definition at line 201 of file ThreadPool.cpp.

Referenced by llvm::gsym::DwarfTransformer::convert(), llvm::dwarf_linker::classic::DWARFLinker::link(), llvm::dwarf_linker::parallel::DWARFLinkerImpl::link(), splitCodeGen(), llvm::lto::ThinBackendProc::wait(), wait(), and ~SingleThreadExecutor().

wait() [2/2]

void SingleThreadExecutor::wait ( ThreadPoolTaskGroup &  Group )

overridevirtual

Blocking wait for only all the tasks in the given group to complete.

Implements llvm::ThreadPoolInterface.

Definition at line 210 of file ThreadPool.cpp.

References wait().

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The documentation for this class was generated from the following files:

• include/llvm/Support/ThreadPool.h
• lib/Support/ThreadPool.cpp