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//===--- IndexBenchmark.cpp - Clangd index benchmarks -----------*- C++ -*-===//
//
// The LLVM Compiler Infrastructure
//
// This file is distributed under the University of Illinois Open Source
// License. See LICENSE.TXT for details.
//
//===----------------------------------------------------------------------===//
#include "../index/Serialization.h"
#include "../index/dex/Dex.h"
#include "benchmark/benchmark.h"
#include "llvm/ADT/SmallVector.h"
#include "llvm/ADT/StringRef.h"
#include "llvm/Support/Path.h"
#include "llvm/Support/Regex.h"
#include <fstream>
#include <streambuf>
#include <string>
const char *IndexFilename;
const char *RequestsFilename;
namespace clang {
namespace clangd {
namespace {
std::unique_ptr<SymbolIndex> buildMem() {
return loadIndex(IndexFilename, /*UseDex=*/false);
}
std::unique_ptr<SymbolIndex> buildDex() {
return loadIndex(IndexFilename, /*UseDex=*/true);
}
// Reads JSON array of serialized FuzzyFindRequest's from user-provided file.
std::vector<FuzzyFindRequest> extractQueriesFromLogs() {
std::ifstream InputStream(RequestsFilename);
std::string Log((std::istreambuf_iterator<char>(InputStream)),
std::istreambuf_iterator<char>());
std::vector<FuzzyFindRequest> Requests;
auto JSONArray = llvm::json::parse(Log);
// Panic if the provided file couldn't be parsed.
if (!JSONArray) {
llvm::errs() << "Error when parsing JSON requests file: "
<< llvm::toString(JSONArray.takeError());
exit(1);
}
if (!JSONArray->getAsArray()) {
llvm::errs() << "Error: top-level value is not a JSON array: " << Log
<< '\n';
exit(1);
}
for (const auto &Item : *JSONArray->getAsArray()) {
FuzzyFindRequest Request;
// Panic if the provided file couldn't be parsed.
if (!fromJSON(Item, Request)) {
llvm::errs() << "Error when deserializing request: " << Item << '\n';
exit(1);
}
Requests.push_back(Request);
}
return Requests;
}
static void MemQueries(benchmark::State &State) {
const auto Mem = buildMem();
const auto Requests = extractQueriesFromLogs();
for (auto _ : State)
for (const auto &Request : Requests)
Mem->fuzzyFind(Request, [](const Symbol &S) {});
}
BENCHMARK(MemQueries);
static void DexQueries(benchmark::State &State) {
const auto Dex = buildDex();
const auto Requests = extractQueriesFromLogs();
for (auto _ : State)
for (const auto &Request : Requests)
Dex->fuzzyFind(Request, [](const Symbol &S) {});
}
BENCHMARK(DexQueries);
} // namespace
} // namespace clangd
} // namespace clang
// FIXME(kbobyrev): Add index building time benchmarks.
// FIXME(kbobyrev): Add memory consumption "benchmarks" by manually measuring
// in-memory index size and reporting it as time.
// FIXME(kbobyrev): Create a logger wrapper to suppress debugging info printer.
int main(int argc, char *argv[]) {
if (argc < 3) {
llvm::errs() << "Usage: " << argv[0]
<< " global-symbol-index.yaml requests.json "
"BENCHMARK_OPTIONS...\n";
return -1;
}
IndexFilename = argv[1];
RequestsFilename = argv[2];
// Trim first two arguments of the benchmark invocation and pretend no
// arguments were passed in the first place.
argv[2] = argv[0];
argv += 2;
argc -= 2;
::benchmark::Initialize(&argc, argv);
::benchmark::RunSpecifiedBenchmarks();
}
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