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31fc1398fa
Summary: This flag was added for the json format to exclude functions from the output. This mirrors that behavior in lcov (where it was previously accepted but ignored). This makes the output file smaller which can be beneficial depending on how you consume it, especially if you don't use this data anyways. Patch by Keith Smiley (@keith). Reviewers: kastiglione, Dor1s, vsk, allevato Reviewed By: Dor1s, allevato Subscribers: llvm-commits Tags: #llvm Differential Revision: https://reviews.llvm.org/D73160
127 lines
4.7 KiB
C++
127 lines
4.7 KiB
C++
//===- CoverageExporterLcov.cpp - Code coverage export --------------------===//
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//
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// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
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// See https://llvm.org/LICENSE.txt for license information.
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// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
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//
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//===----------------------------------------------------------------------===//
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//
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// This file implements export of code coverage data to lcov trace file format.
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//
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//===----------------------------------------------------------------------===//
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//===----------------------------------------------------------------------===//
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//
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// The trace file code coverage export follows the following format (see also
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// https://linux.die.net/man/1/geninfo). Each quoted string appears on its own
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// line; the indentation shown here is only for documentation purposes.
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//
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// - for each source file:
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// - "SF:<absolute path to source file>"
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// - for each function:
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// - "FN:<line number of function start>,<function name>"
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// - for each function:
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// - "FNDA:<execution count>,<function name>"
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// - "FNF:<number of functions found>"
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// - "FNH:<number of functions hit>"
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// - for each instrumented line:
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// - "DA:<line number>,<execution count>[,<checksum>]
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// - "LH:<number of lines with non-zero execution count>"
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// - "LF:<nubmer of instrumented lines>"
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// - "end_of_record"
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//
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// If the user is exporting summary information only, then the FN, FNDA, and DA
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// lines will not be present.
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//
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//===----------------------------------------------------------------------===//
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#include "CoverageExporterLcov.h"
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#include "CoverageReport.h"
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using namespace llvm;
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namespace {
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void renderFunctionSummary(raw_ostream &OS,
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const FileCoverageSummary &Summary) {
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OS << "FNF:" << Summary.FunctionCoverage.getNumFunctions() << '\n'
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<< "FNH:" << Summary.FunctionCoverage.getExecuted() << '\n';
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}
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void renderFunctions(
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raw_ostream &OS,
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const iterator_range<coverage::FunctionRecordIterator> &Functions) {
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for (const auto &F : Functions) {
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auto StartLine = F.CountedRegions.front().LineStart;
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OS << "FN:" << StartLine << ',' << F.Name << '\n';
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}
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for (const auto &F : Functions)
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OS << "FNDA:" << F.ExecutionCount << ',' << F.Name << '\n';
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}
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void renderLineExecutionCounts(raw_ostream &OS,
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const coverage::CoverageData &FileCoverage) {
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coverage::LineCoverageIterator LCI{FileCoverage, 1};
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coverage::LineCoverageIterator LCIEnd = LCI.getEnd();
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for (; LCI != LCIEnd; ++LCI) {
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const coverage::LineCoverageStats &LCS = *LCI;
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if (LCS.isMapped()) {
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OS << "DA:" << LCS.getLine() << ',' << LCS.getExecutionCount() << '\n';
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}
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}
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}
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void renderLineSummary(raw_ostream &OS, const FileCoverageSummary &Summary) {
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OS << "LF:" << Summary.LineCoverage.getNumLines() << '\n'
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<< "LH:" << Summary.LineCoverage.getCovered() << '\n';
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}
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void renderFile(raw_ostream &OS, const coverage::CoverageMapping &Coverage,
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const std::string &Filename,
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const FileCoverageSummary &FileReport, bool ExportSummaryOnly,
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bool SkipFunctions) {
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OS << "SF:" << Filename << '\n';
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if (!ExportSummaryOnly && !SkipFunctions) {
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renderFunctions(OS, Coverage.getCoveredFunctions(Filename));
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}
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renderFunctionSummary(OS, FileReport);
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if (!ExportSummaryOnly) {
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// Calculate and render detailed coverage information for given file.
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auto FileCoverage = Coverage.getCoverageForFile(Filename);
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renderLineExecutionCounts(OS, FileCoverage);
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}
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renderLineSummary(OS, FileReport);
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OS << "end_of_record\n";
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}
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void renderFiles(raw_ostream &OS, const coverage::CoverageMapping &Coverage,
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ArrayRef<std::string> SourceFiles,
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ArrayRef<FileCoverageSummary> FileReports,
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bool ExportSummaryOnly, bool SkipFunctions) {
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for (unsigned I = 0, E = SourceFiles.size(); I < E; ++I)
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renderFile(OS, Coverage, SourceFiles[I], FileReports[I], ExportSummaryOnly,
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SkipFunctions);
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}
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} // end anonymous namespace
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void CoverageExporterLcov::renderRoot(const CoverageFilters &IgnoreFilters) {
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std::vector<std::string> SourceFiles;
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for (StringRef SF : Coverage.getUniqueSourceFiles()) {
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if (!IgnoreFilters.matchesFilename(SF))
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SourceFiles.emplace_back(SF);
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}
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renderRoot(SourceFiles);
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}
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void CoverageExporterLcov::renderRoot(ArrayRef<std::string> SourceFiles) {
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FileCoverageSummary Totals = FileCoverageSummary("Totals");
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auto FileReports = CoverageReport::prepareFileReports(Coverage, Totals,
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SourceFiles, Options);
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renderFiles(OS, Coverage, SourceFiles, FileReports, Options.ExportSummaryOnly,
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Options.SkipFunctions);
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}
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