Base class for pools of compiler re-entry trampolines. More...

#include "llvm/ExecutionEngine/Orc/IndirectionUtils.h"

Inheritance diagram for llvm::orc::TrampolinePool:

Public Types
using	NotifyLandingResolvedFunction = unique_function< void(ExecutorAddr) const >

using	ResolveLandingFunction = unique_function< void(ExecutorAddr TrampolineAddr, NotifyLandingResolvedFunction OnLandingResolved) const >

Public Member Functions
virtual	~TrampolinePool ()

Expected< ExecutorAddr >	getTrampoline ()
	Get an available trampoline address.

void	releaseTrampoline (ExecutorAddr TrampolineAddr)
	Returns the given trampoline to the pool for re-use.

Protected Member Functions
virtual Error	grow ()=0

Protected Attributes
std::mutex	TPMutex

std::vector< ExecutorAddr >	AvailableTrampolines

Detailed Description

Base class for pools of compiler re-entry trampolines.

These trampolines are callable addresses that save all register state before calling a supplied function to return the trampoline landing address, then restore all state before jumping to that address. They are used by various ORC APIs to support lazy compilation

Definition at line 64 of file IndirectionUtils.h.

Member Typedef Documentation

◆ NotifyLandingResolvedFunction

using llvm::orc::TrampolinePool::NotifyLandingResolvedFunction = unique_function<void(ExecutorAddr) const>

Definition at line 66 of file IndirectionUtils.h.

◆ ResolveLandingFunction

using llvm::orc::TrampolinePool::ResolveLandingFunction = unique_function<void( ExecutorAddr TrampolineAddr, NotifyLandingResolvedFunction OnLandingResolved) const>

Definition at line 69 of file IndirectionUtils.h.

Constructor & Destructor Documentation

◆ ~TrampolinePool()

llvm::orc::TrampolinePool::~TrampolinePool ( )

virtualdefault

Member Function Documentation

◆ getTrampoline()

Expected< ExecutorAddr > llvm::orc::TrampolinePool::getTrampoline ( )

inline

Get an available trampoline address.

Returns an error if no trampoline can be created.

Definition at line 77 of file IndirectionUtils.h.

References assert(), AvailableTrampolines, grow(), and TPMutex.

Referenced by llvm::orc::LazyCallThroughManager::getCallThroughTrampoline().

◆ grow()

virtual Error llvm::orc::TrampolinePool::grow ( )

protectedpure virtual

Referenced by getTrampoline().

◆ releaseTrampoline()

void llvm::orc::TrampolinePool::releaseTrampoline ( ExecutorAddr TrampolineAddr )

inline

Returns the given trampoline to the pool for re-use.

Definition at line 90 of file IndirectionUtils.h.

References AvailableTrampolines, and TPMutex.

Member Data Documentation

◆ AvailableTrampolines

std::vector<ExecutorAddr> llvm::orc::TrampolinePool::AvailableTrampolines

protected

Definition at line 99 of file IndirectionUtils.h.

Referenced by getTrampoline(), and releaseTrampoline().

◆ TPMutex

std::mutex llvm::orc::TrampolinePool::TPMutex