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//===- EPCGenericDylibManager.h -- Generic EPC Dylib management -*- 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
//
//===----------------------------------------------------------------------===//
//
// Implements dylib loading and searching by making calls to
// ExecutorProcessControl::callWrapper.
//
// This simplifies the implementaton of new ExecutorProcessControl instances,
// as this implementation will always work (at the cost of some performance
// overhead for the calls).
//
//===----------------------------------------------------------------------===//
#ifndef LLVM_EXECUTIONENGINE_ORC_EPCGENERICDYLIBMANAGER_H
#define LLVM_EXECUTIONENGINE_ORC_EPCGENERICDYLIBMANAGER_H
#include "llvm/ExecutionEngine/Orc/ExecutorProcessControl.h"
#include "llvm/ExecutionEngine/Orc/Shared/ExecutorSymbolDef.h"
#include "llvm/ExecutionEngine/Orc/Shared/SimpleRemoteEPCUtils.h"
namespace llvm {
namespace orc {
class SymbolLookupSet;
class EPCGenericDylibManager {
public:
/// Function addresses for memory access.
struct SymbolAddrs {
ExecutorAddr Instance;
ExecutorAddr Open;
ExecutorAddr Lookup;
};
/// Create an EPCGenericMemoryAccess instance from a given set of
/// function addrs.
static Expected<EPCGenericDylibManager>
CreateWithDefaultBootstrapSymbols(ExecutorProcessControl &EPC);
/// Create an EPCGenericMemoryAccess instance from a given set of
/// function addrs.
EPCGenericDylibManager(ExecutorProcessControl &EPC, SymbolAddrs SAs)
: EPC(EPC), SAs(SAs) {}
/// Loads the dylib with the given name.
Expected<tpctypes::DylibHandle> open(StringRef Path, uint64_t Mode);
/// Looks up symbols within the given dylib.
Expected<std::vector<ExecutorSymbolDef>>
lookup(tpctypes::DylibHandle H, const SymbolLookupSet &Lookup) {
std::promise<MSVCPExpected<std::vector<ExecutorSymbolDef>>> RP;
auto RF = RP.get_future();
lookupAsync(H, Lookup, [&RP](auto R) { RP.set_value(std::move(R)); });
return RF.get();
}
/// Looks up symbols within the given dylib.
Expected<std::vector<ExecutorSymbolDef>>
lookup(tpctypes::DylibHandle H, const RemoteSymbolLookupSet &Lookup) {
std::promise<MSVCPExpected<std::vector<ExecutorSymbolDef>>> RP;
auto RF = RP.get_future();
lookupAsync(H, Lookup, [&RP](auto R) { RP.set_value(std::move(R)); });
return RF.get();
}
using SymbolLookupCompleteFn =
unique_function<void(Expected<std::vector<ExecutorSymbolDef>>)>;
/// Looks up symbols within the given dylib.
void lookupAsync(tpctypes::DylibHandle H, const SymbolLookupSet &Lookup,
SymbolLookupCompleteFn Complete);
/// Looks up symbols within the given dylib.
void lookupAsync(tpctypes::DylibHandle H, const RemoteSymbolLookupSet &Lookup,
SymbolLookupCompleteFn Complete);
private:
ExecutorProcessControl &EPC;
SymbolAddrs SAs;
};
} // end namespace orc
} // end namespace llvm
#endif // LLVM_EXECUTIONENGINE_ORC_EPCGENERICDYLIBMANAGER_H
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