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//===---------------- SimpleExecutorMemoryManager.h -------------*- C++ -*-===//
//
// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
// See https://llvm.org/LICENSE.txt for license information.
// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
//
//===----------------------------------------------------------------------===//
//
// A simple allocator class suitable for basic remote-JIT use.
//
// FIXME: The functionality in this file should be moved to the ORC runtime.
//
//===----------------------------------------------------------------------===//
#ifndef LLVM_EXECUTIONENGINE_ORC_TARGETPROCESS_SIMPLEEXECUTORMEMORYMANAGER_H
#define LLVM_EXECUTIONENGINE_ORC_TARGETPROCESS_SIMPLEEXECUTORMEMORYMANAGER_H
#include "llvm/ADT/DenseMap.h"
#include "llvm/ExecutionEngine/Orc/Shared/ExecutorAddress.h"
#include "llvm/ExecutionEngine/Orc/Shared/TargetProcessControlTypes.h"
#include "llvm/ExecutionEngine/Orc/Shared/WrapperFunctionUtils.h"
#include "llvm/ExecutionEngine/Orc/TargetProcess/ExecutorBootstrapService.h"
#include "llvm/Support/Error.h"
#include <mutex>
namespace llvm {
namespace orc {
namespace rt_bootstrap {
/// Simple page-based allocator.
class SimpleExecutorMemoryManager : public ExecutorBootstrapService {
public:
virtual ~SimpleExecutorMemoryManager();
Expected<ExecutorAddr> allocate(uint64_t Size);
Error finalize(tpctypes::FinalizeRequest &FR);
Error deallocate(const std::vector<ExecutorAddr> &Bases);
Error shutdown() override;
void addBootstrapSymbols(StringMap<ExecutorAddr> &M) override;
private:
struct Allocation {
size_t Size = 0;
std::vector<shared::WrapperFunctionCall> DeallocationActions;
};
using AllocationsMap = DenseMap<void *, Allocation>;
Error deallocateImpl(void *Base, Allocation &A);
static llvm::orc::shared::CWrapperFunctionResult
reserveWrapper(const char *ArgData, size_t ArgSize);
static llvm::orc::shared::CWrapperFunctionResult
finalizeWrapper(const char *ArgData, size_t ArgSize);
static llvm::orc::shared::CWrapperFunctionResult
deallocateWrapper(const char *ArgData, size_t ArgSize);
std::mutex M;
AllocationsMap Allocations;
};
} // end namespace rt_bootstrap
} // end namespace orc
} // end namespace llvm
#endif // LLVM_EXECUTIONENGINE_ORC_TARGETPROCESS_SIMPLEEXECUTORMEMORYMANAGER_H
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