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
using	ResolveLandingFunction

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 65 of file IndirectionUtils.h.

Member Typedef Documentation

◆ NotifyLandingResolvedFunction

using llvm::orc::TrampolinePool::NotifyLandingResolvedFunction

Initial value:

unique_function<void(ExecutorAddr) const>

llvm::orc::ExecutorAddr

Represents an address in the executor process.

Definition ExecutorAddress.h:34

llvm::unique_function

unique_function is a type-erasing functor similar to std::function.

Definition FunctionExtras.h:57

Definition at line 67 of file IndirectionUtils.h.

◆ ResolveLandingFunction

using llvm::orc::TrampolinePool::ResolveLandingFunction

Initial value:

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

Definition at line 70 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 78 of file IndirectionUtils.h.

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

◆ 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 91 of file IndirectionUtils.h.

References AvailableTrampolines, and TPMutex.

Member Data Documentation

◆ AvailableTrampolines

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

protected

Definition at line 100 of file IndirectionUtils.h.

Referenced by getTrampoline(), and releaseTrampoline().

◆ TPMutex

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