| 1 | //===----- PerfSupportPlugin.h ----- Utils for perf support -----*- C++ -*-===// |
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| 2 | // |
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| 3 | // Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions. |
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| 4 | // See https://llvm.org/LICENSE.txt for license information. |
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| 5 | // SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception |
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| 6 | // |
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| 7 | //===----------------------------------------------------------------------===// |
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| 8 | // |
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| 9 | // Handles support for registering code with perf |
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| 10 | // |
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| 11 | //===----------------------------------------------------------------------===// |
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| 12 | |
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| 13 | #ifndef LLVM_EXECUTIONENGINE_ORC_PERFSUPPORTPLUGIN_H |
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| 14 | #define LLVM_EXECUTIONENGINE_ORC_PERFSUPPORTPLUGIN_H |
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| 15 | |
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| 16 | #include "llvm/ExecutionEngine/Orc/Shared/PerfSharedStructs.h" |
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| 17 | |
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| 18 | #include "llvm/ExecutionEngine/Orc/Core.h" |
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| 19 | #include "llvm/ExecutionEngine/Orc/ObjectLinkingLayer.h" |
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| 20 | |
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| 21 | namespace llvm { |
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| 22 | namespace orc { |
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| 23 | |
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| 24 | /// Log perf jitdump events for each object (see |
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| 25 | /// https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/tree/tools/perf/Documentation/jitdump-specification.txt). |
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| 26 | /// Currently has support for dumping code load records and unwind info records. |
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| 27 | class PerfSupportPlugin : public ObjectLinkingLayer::Plugin { |
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| 28 | public: |
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| 29 | PerfSupportPlugin(ExecutorProcessControl &EPC, |
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| 30 | ExecutorAddr RegisterPerfStartAddr, |
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| 31 | ExecutorAddr RegisterPerfEndAddr, |
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| 32 | ExecutorAddr RegisterPerfImplAddr, bool EmitDebugInfo, |
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| 33 | bool EmitUnwindInfo); |
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| 34 | ~PerfSupportPlugin(); |
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| 35 | |
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| 36 | void modifyPassConfig(MaterializationResponsibility &MR, |
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| 37 | jitlink::LinkGraph &G, |
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| 38 | jitlink::PassConfiguration &Config) override; |
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| 39 | |
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| 40 | Error notifyFailed(MaterializationResponsibility &MR) override { |
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| 41 | return Error::success(); |
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| 42 | } |
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| 43 | |
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| 44 | Error notifyRemovingResources(JITDylib &JD, ResourceKey K) override { |
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| 45 | return Error::success(); |
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| 46 | } |
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| 47 | |
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| 48 | void notifyTransferringResources(JITDylib &JD, ResourceKey DstKey, |
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| 49 | ResourceKey SrcKey) override {} |
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| 50 | |
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| 51 | static Expected<std::unique_ptr<PerfSupportPlugin>> |
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| 52 | Create(ExecutorProcessControl &EPC, JITDylib &JD, bool EmitDebugInfo, |
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| 53 | bool EmitUnwindInfo); |
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| 54 | |
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| 55 | private: |
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| 56 | ExecutorProcessControl &EPC; |
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| 57 | ExecutorAddr RegisterPerfStartAddr; |
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| 58 | ExecutorAddr RegisterPerfEndAddr; |
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| 59 | ExecutorAddr RegisterPerfImplAddr; |
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| 60 | std::atomic<uint64_t> CodeIndex; |
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| 61 | bool EmitDebugInfo; |
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| 62 | bool EmitUnwindInfo; |
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| 63 | }; |
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| 64 | |
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| 65 | } // namespace orc |
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| 66 | } // namespace llvm |
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| 67 | |
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| 68 | #endif // LLVM_EXECUTIONENGINE_ORC_PERFSUPPORTPLUGIN_H |
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