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//===----- PerfSupportPlugin.h ----- Utils for perf support -----*- 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
//
//===----------------------------------------------------------------------===//
//
// Handles support for registering code with perf
//
//===----------------------------------------------------------------------===//
#ifndef LLVM_EXECUTIONENGINE_ORC_PERFSUPPORTPLUGIN_H
#define LLVM_EXECUTIONENGINE_ORC_PERFSUPPORTPLUGIN_H
#include "llvm/ExecutionEngine/Orc/Shared/PerfSharedStructs.h"
#include "llvm/ExecutionEngine/Orc/Core.h"
#include "llvm/ExecutionEngine/Orc/ObjectLinkingLayer.h"
namespace llvm {
namespace orc {
/// Log perf jitdump events for each object (see
/// https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/tree/tools/perf/Documentation/jitdump-specification.txt).
/// Currently has support for dumping code load records and unwind info records.
class PerfSupportPlugin : public ObjectLinkingLayer::Plugin {
public:
PerfSupportPlugin(ExecutorProcessControl &EPC,
ExecutorAddr RegisterPerfStartAddr,
ExecutorAddr RegisterPerfEndAddr,
ExecutorAddr RegisterPerfImplAddr, bool EmitDebugInfo,
bool EmitUnwindInfo);
~PerfSupportPlugin();
void modifyPassConfig(MaterializationResponsibility &MR,
jitlink::LinkGraph &G,
jitlink::PassConfiguration &Config) override;
Error notifyFailed(MaterializationResponsibility &MR) override {
return Error::success();
}
Error notifyRemovingResources(JITDylib &JD, ResourceKey K) override {
return Error::success();
}
void notifyTransferringResources(JITDylib &JD, ResourceKey DstKey,
ResourceKey SrcKey) override {}
static Expected<std::unique_ptr<PerfSupportPlugin>>
Create(ExecutorProcessControl &EPC, JITDylib &JD, bool EmitDebugInfo,
bool EmitUnwindInfo);
private:
ExecutorProcessControl &EPC;
ExecutorAddr RegisterPerfStartAddr;
ExecutorAddr RegisterPerfEndAddr;
ExecutorAddr RegisterPerfImplAddr;
std::atomic<uint64_t> CodeIndex;
bool EmitDebugInfo;
bool EmitUnwindInfo;
};
} // namespace orc
} // namespace llvm
#endif // LLVM_EXECUTIONENGINE_ORC_PERFSUPPORTPLUGIN_H
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