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#pragma once
#include <memory>
#include <unordered_map>
#include <llvm/ExecutionEngine/ExecutionEngine.h>
#include <llvm/ExecutionEngine/ObjectCache.h>
namespace dev
{
namespace eth
{
namespace jit
{
/// A bundle of objects and information needed for a contract execution
class ExecBundle
{
public:
std::unique_ptr<llvm::ExecutionEngine> engine;
ExecBundle() = default;
ExecBundle(ExecBundle&& _other):
engine(std::move(_other.engine))
{}
ExecBundle(ExecBundle const&) = delete;
void operator=(ExecBundle) = delete;
};
class ObjectCache : public llvm::ObjectCache
{
public:
/// notifyObjectCompiled - Provides a pointer to compiled code for Module M.
virtual void notifyObjectCompiled(llvm::Module const* _module, llvm::MemoryBuffer const* _object) final override;
/// getObjectCopy - Returns a pointer to a newly allocated MemoryBuffer that
/// contains the object which corresponds with Module M, or 0 if an object is
/// not available. The caller owns both the MemoryBuffer returned by this
/// and the memory it references.
virtual llvm::MemoryBuffer* getObject(llvm::Module const* _module) final override;
private:
std::unordered_map<std::string, std::unique_ptr<llvm::MemoryBuffer>> m_map;
};
class Cache
{
public:
using Key = std::string;
static ExecBundle& registerExec(Key _key, ExecBundle&& _exec);
static ExecBundle* findExec(Key _key);
static ObjectCache* getObjectCache();
};
}
}
}