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32c69dd1ab
collectLineCounts() should only organize the output data. This is done in anticipation of subsequent changes which will pass in GCNO and GCDA filenames into the print function where it is printed similar to the gcov output. Patch by Yuchen Wu! git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@193134 91177308-0d34-0410-b5e6-96231b3b80d8
283 lines
8.9 KiB
C++
283 lines
8.9 KiB
C++
//===- GCOVr.cpp - LLVM coverage tool -------------------------------------===//
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//
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// The LLVM Compiler Infrastructure
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//
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// This file is distributed under the University of Illinois Open Source
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// License. See LICENSE.TXT for details.
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//
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//===----------------------------------------------------------------------===//
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//
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// GCOV implements the interface to read and write coverage files that use
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// 'gcov' format.
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//
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//===----------------------------------------------------------------------===//
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#include "llvm/Support/GCOV.h"
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#include "llvm/ADT/OwningPtr.h"
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#include "llvm/ADT/STLExtras.h"
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#include "llvm/Support/MemoryObject.h"
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#include "llvm/Support/system_error.h"
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using namespace llvm;
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//===----------------------------------------------------------------------===//
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// GCOVFile implementation.
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/// ~GCOVFile - Delete GCOVFile and its content.
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GCOVFile::~GCOVFile() {
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DeleteContainerPointers(Functions);
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}
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/// isGCDAFile - Return true if Format identifies a .gcda file.
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static bool isGCDAFile(GCOV::GCOVFormat Format) {
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return Format == GCOV::GCDA_402 || Format == GCOV::GCDA_404;
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}
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/// isGCNOFile - Return true if Format identifies a .gcno file.
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static bool isGCNOFile(GCOV::GCOVFormat Format) {
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return Format == GCOV::GCNO_402 || Format == GCOV::GCNO_404;
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}
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/// read - Read GCOV buffer.
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bool GCOVFile::read(GCOVBuffer &Buffer) {
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GCOV::GCOVFormat Format = Buffer.readGCOVFormat();
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if (Format == GCOV::InvalidGCOV)
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return false;
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unsigned i = 0;
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while (1) {
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GCOVFunction *GFun = NULL;
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if (isGCDAFile(Format)) {
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// Use existing function while reading .gcda file.
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assert(i < Functions.size() && ".gcda data does not match .gcno data");
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GFun = Functions[i];
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} else if (isGCNOFile(Format)){
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GFun = new GCOVFunction();
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Functions.push_back(GFun);
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}
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if (!GFun || !GFun->read(Buffer, Format))
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break;
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++i;
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}
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return true;
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}
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/// dump - Dump GCOVFile content on standard out for debugging purposes.
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void GCOVFile::dump() {
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for (SmallVectorImpl<GCOVFunction *>::iterator I = Functions.begin(),
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E = Functions.end(); I != E; ++I)
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(*I)->dump();
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}
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/// collectLineCounts - Collect line counts. This must be used after
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/// reading .gcno and .gcda files.
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void GCOVFile::collectLineCounts(FileInfo &FI) {
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for (SmallVectorImpl<GCOVFunction *>::iterator I = Functions.begin(),
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E = Functions.end(); I != E; ++I)
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(*I)->collectLineCounts(FI);
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}
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//===----------------------------------------------------------------------===//
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// GCOVFunction implementation.
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/// ~GCOVFunction - Delete GCOVFunction and its content.
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GCOVFunction::~GCOVFunction() {
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DeleteContainerPointers(Blocks);
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}
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/// read - Read a aunction from the buffer. Return false if buffer cursor
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/// does not point to a function tag.
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bool GCOVFunction::read(GCOVBuffer &Buff, GCOV::GCOVFormat Format) {
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if (!Buff.readFunctionTag())
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return false;
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Buff.readInt(); // Function header length
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Ident = Buff.readInt();
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Buff.readInt(); // Checksum #1
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if (Format != GCOV::GCNO_402 && Format != GCOV::GCDA_402)
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Buff.readInt(); // Checksum #2
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Name = Buff.readString();
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if (Format == GCOV::GCNO_402 || Format == GCOV::GCNO_404)
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Filename = Buff.readString();
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if (Format == GCOV::GCDA_402 || Format == GCOV::GCDA_404) {
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Buff.readArcTag();
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uint32_t Count = Buff.readInt() / 2;
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for (unsigned i = 0, e = Count; i != e; ++i) {
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Blocks[i]->addCount(Buff.readInt64());
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}
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return true;
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}
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LineNumber = Buff.readInt();
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// read blocks.
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bool BlockTagFound = Buff.readBlockTag();
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(void)BlockTagFound;
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assert(BlockTagFound && "Block Tag not found!");
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uint32_t BlockCount = Buff.readInt();
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for (int i = 0, e = BlockCount; i != e; ++i) {
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Buff.readInt(); // Block flags;
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Blocks.push_back(new GCOVBlock(i));
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}
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// read edges.
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while (Buff.readEdgeTag()) {
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uint32_t EdgeCount = (Buff.readInt() - 1) / 2;
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uint32_t BlockNo = Buff.readInt();
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assert(BlockNo < BlockCount && "Unexpected Block number!");
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for (int i = 0, e = EdgeCount; i != e; ++i) {
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Blocks[BlockNo]->addEdge(Buff.readInt());
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Buff.readInt(); // Edge flag
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}
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}
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// read line table.
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while (Buff.readLineTag()) {
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uint32_t LineTableLength = Buff.readInt();
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uint32_t Size = Buff.getCursor() + LineTableLength*4;
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uint32_t BlockNo = Buff.readInt();
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assert(BlockNo < BlockCount && "Unexpected Block number!");
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GCOVBlock *Block = Blocks[BlockNo];
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Buff.readInt(); // flag
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while (Buff.getCursor() != (Size - 4)) {
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StringRef Filename = Buff.readString();
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if (Buff.getCursor() == (Size - 4)) break;
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while (uint32_t L = Buff.readInt())
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Block->addLine(Filename, L);
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}
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Buff.readInt(); // flag
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}
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return true;
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}
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/// dump - Dump GCOVFunction content on standard out for debugging purposes.
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void GCOVFunction::dump() {
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outs() << "===== " << Name << " @ " << Filename << ":" << LineNumber << "\n";
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for (SmallVectorImpl<GCOVBlock *>::iterator I = Blocks.begin(),
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E = Blocks.end(); I != E; ++I)
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(*I)->dump();
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}
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/// collectLineCounts - Collect line counts. This must be used after
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/// reading .gcno and .gcda files.
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void GCOVFunction::collectLineCounts(FileInfo &FI) {
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for (SmallVectorImpl<GCOVBlock *>::iterator I = Blocks.begin(),
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E = Blocks.end(); I != E; ++I)
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(*I)->collectLineCounts(FI);
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}
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//===----------------------------------------------------------------------===//
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// GCOVBlock implementation.
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/// ~GCOVBlock - Delete GCOVBlock and its content.
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GCOVBlock::~GCOVBlock() {
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Edges.clear();
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DeleteContainerSeconds(Lines);
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}
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void GCOVBlock::addLine(StringRef Filename, uint32_t LineNo) {
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GCOVLines *&LinesForFile = Lines[Filename];
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if (!LinesForFile)
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LinesForFile = new GCOVLines();
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LinesForFile->add(LineNo);
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}
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/// collectLineCounts - Collect line counts. This must be used after
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/// reading .gcno and .gcda files.
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void GCOVBlock::collectLineCounts(FileInfo &FI) {
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for (StringMap<GCOVLines *>::iterator I = Lines.begin(),
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E = Lines.end(); I != E; ++I)
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I->second->collectLineCounts(FI, I->first(), Counter);
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}
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/// dump - Dump GCOVBlock content on standard out for debugging purposes.
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void GCOVBlock::dump() {
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outs() << "Block : " << Number << " Counter : " << Counter << "\n";
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if (!Edges.empty()) {
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outs() << "\tEdges : ";
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for (SmallVectorImpl<uint32_t>::iterator I = Edges.begin(), E = Edges.end();
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I != E; ++I)
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outs() << (*I) << ",";
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outs() << "\n";
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}
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if (!Lines.empty()) {
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outs() << "\tLines : ";
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for (StringMap<GCOVLines *>::iterator LI = Lines.begin(),
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LE = Lines.end(); LI != LE; ++LI) {
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outs() << LI->first() << " -> ";
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LI->second->dump();
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outs() << "\n";
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}
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}
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}
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//===----------------------------------------------------------------------===//
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// GCOVLines implementation.
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/// collectLineCounts - Collect line counts. This must be used after
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/// reading .gcno and .gcda files.
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void GCOVLines::collectLineCounts(FileInfo &FI, StringRef Filename,
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uint32_t Count) {
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for (SmallVectorImpl<uint32_t>::iterator I = Lines.begin(),
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E = Lines.end(); I != E; ++I)
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FI.addLineCount(Filename, *I, Count);
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}
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/// dump - Dump GCOVLines content on standard out for debugging purposes.
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void GCOVLines::dump() {
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for (SmallVectorImpl<uint32_t>::iterator I = Lines.begin(),
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E = Lines.end(); I != E; ++I)
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outs() << (*I) << ",";
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}
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//===----------------------------------------------------------------------===//
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// FileInfo implementation.
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/// addLineCount - Add line count for the given line number in a file.
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void FileInfo::addLineCount(StringRef Filename, uint32_t Line, uint32_t Count) {
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if (LineInfo.find(Filename) == LineInfo.end()) {
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OwningPtr<MemoryBuffer> Buff;
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if (error_code ec = MemoryBuffer::getFileOrSTDIN(Filename, Buff)) {
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errs() << Filename << ": " << ec.message() << "\n";
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return;
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}
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StringRef AllLines = Buff.take()->getBuffer();
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LineCounts L(AllLines.count('\n')+2);
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L[Line-1] = Count;
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LineInfo[Filename] = L;
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return;
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}
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LineCounts &L = LineInfo[Filename];
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L[Line-1] = Count;
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}
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/// print - Print source files with collected line count information.
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void FileInfo::print() {
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for (StringMap<LineCounts>::iterator I = LineInfo.begin(), E = LineInfo.end();
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I != E; ++I) {
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StringRef Filename = I->first();
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outs() << Filename << "\n";
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LineCounts &L = LineInfo[Filename];
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OwningPtr<MemoryBuffer> Buff;
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if (error_code ec = MemoryBuffer::getFileOrSTDIN(Filename, Buff)) {
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errs() << Filename << ": " << ec.message() << "\n";
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return;
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}
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StringRef AllLines = Buff.take()->getBuffer();
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for (unsigned i = 0, e = L.size(); i != e; ++i) {
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if (L[i])
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outs() << L[i] << ":\t";
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else
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outs() << " :\t";
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std::pair<StringRef, StringRef> P = AllLines.split('\n');
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if (AllLines != P.first)
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outs() << P.first;
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outs() << "\n";
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AllLines = P.second;
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}
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}
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}
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