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[llvm-jitlink] Move statistics code into a separate file.
Further isolates statistics gathering / reporting code from the rest of llvm-jitlink.
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,135 @@ | ||
| //===-- llvm-jitlink-statistics.cpp -- gathers/reports JIT-linking stats --===// | ||
| // | ||
| // 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 | ||
| // | ||
| //===----------------------------------------------------------------------===// | ||
| // | ||
| // This file contains the code for enabling, gathering and reporting | ||
| // llvm-jitlink statistics. | ||
| // | ||
| //===----------------------------------------------------------------------===// | ||
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| #include "llvm-jitlink.h" | ||
| #include "llvm/Support/CommandLine.h" | ||
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| #define DEBUG_TYPE "llvm_jitlink" | ||
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| using namespace llvm; | ||
| using namespace llvm::jitlink; | ||
| using namespace llvm::orc; | ||
|
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| static cl::opt<bool> ShowPrePruneTotalBlockSize( | ||
| "pre-prune-total-block-size", | ||
| cl::desc("Total size of all blocks (including zero-fill) in all " | ||
| "graphs (pre-pruning)"), | ||
| cl::init(false)); | ||
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| static cl::opt<bool> ShowPostFixupTotalBlockSize( | ||
| "post-fixup-total-block-size", | ||
| cl::desc("Total size of all blocks (including zero-fill) in all " | ||
| "graphs (post-fixup)"), | ||
| cl::init(false)); | ||
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| class StatsPlugin : public ObjectLinkingLayer::Plugin { | ||
| public: | ||
| static void enableIfNeeded(Session &S, bool UsingOrcRuntime) { | ||
| std::unique_ptr<StatsPlugin> Instance; | ||
| auto GetStats = [&]() -> StatsPlugin & { | ||
| if (!Instance) | ||
| Instance.reset(new StatsPlugin(UsingOrcRuntime)); | ||
| return *Instance; | ||
| }; | ||
|
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| if (ShowPrePruneTotalBlockSize) | ||
| GetStats().PrePruneTotalBlockSize = 0; | ||
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| if (ShowPostFixupTotalBlockSize) | ||
| GetStats().PostFixupTotalBlockSize = 0; | ||
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| if (Instance) | ||
| S.ObjLayer.addPlugin(std::move(Instance)); | ||
| } | ||
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| ~StatsPlugin() { publish(dbgs()); } | ||
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| void publish(raw_ostream &OS); | ||
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| void modifyPassConfig(MaterializationResponsibility &MR, LinkGraph &G, | ||
| PassConfiguration &PassConfig) override { | ||
| PassConfig.PrePrunePasses.push_back( | ||
| [this](LinkGraph &G) { return recordPrePruneStats(G); }); | ||
| PassConfig.PostFixupPasses.push_back( | ||
| [this](LinkGraph &G) { return recordPostFixupStats(G); }); | ||
| } | ||
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| Error notifyFailed(MaterializationResponsibility &MR) override { | ||
| return Error::success(); | ||
| } | ||
|
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| Error notifyRemovingResources(JITDylib &JD, ResourceKey K) override { | ||
| return Error::success(); | ||
| } | ||
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| void notifyTransferringResources(JITDylib &JD, ResourceKey DstKey, | ||
| ResourceKey SrcKey) override {} | ||
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| private: | ||
| StatsPlugin(bool UsingOrcRuntime) : UsingOrcRuntime(UsingOrcRuntime) {} | ||
| Error recordPrePruneStats(jitlink::LinkGraph &G); | ||
| Error recordPostFixupStats(jitlink::LinkGraph &G); | ||
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| bool UsingOrcRuntime; | ||
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| std::mutex M; | ||
| std::optional<uint64_t> PrePruneTotalBlockSize; | ||
| std::optional<uint64_t> PostFixupTotalBlockSize; | ||
| std::optional<DenseMap<size_t, size_t>> EdgeCountDetails; | ||
| }; | ||
|
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| void StatsPlugin::publish(raw_ostream &OS) { | ||
|
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| if (UsingOrcRuntime) | ||
| OS << "Note: Session stats include runtime and entry point lookup, but " | ||
| "not JITDylib initialization/deinitialization.\n"; | ||
|
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| OS << "Statistics:\n"; | ||
| if (PrePruneTotalBlockSize) | ||
| OS << " Total size of all blocks before pruning: " | ||
| << *PrePruneTotalBlockSize << "\n"; | ||
|
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| if (PostFixupTotalBlockSize) | ||
| OS << " Total size of all blocks after fixups: " | ||
| << *PostFixupTotalBlockSize << "\n"; | ||
| } | ||
|
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| static uint64_t computeTotalBlockSizes(LinkGraph &G) { | ||
| uint64_t TotalSize = 0; | ||
| for (auto *B : G.blocks()) | ||
| TotalSize += B->getSize(); | ||
| return TotalSize; | ||
| } | ||
|
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| Error StatsPlugin::recordPrePruneStats(LinkGraph &G) { | ||
| std::lock_guard<std::mutex> Lock(M); | ||
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| if (PrePruneTotalBlockSize) | ||
| *PrePruneTotalBlockSize += computeTotalBlockSizes(G); | ||
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| return Error::success(); | ||
| } | ||
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| Error StatsPlugin::recordPostFixupStats(LinkGraph &G) { | ||
| std::lock_guard<std::mutex> Lock(M); | ||
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| if (PostFixupTotalBlockSize) | ||
| *PostFixupTotalBlockSize += computeTotalBlockSizes(G); | ||
| return Error::success(); | ||
| } | ||
|
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| namespace llvm { | ||
| void enableStatistics(Session &S, bool UsingOrcRuntime) { | ||
| StatsPlugin::enableIfNeeded(S, UsingOrcRuntime); | ||
| } | ||
| } // namespace llvm |
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