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282 lines
8.6 KiB
C++
282 lines
8.6 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(GCOVFormat Format) {
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return Format == GCDA_402 || Format == 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(GCOVFormat Format) {
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return Format == GCNO_402 || Format == 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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GCOVFormat Format = Buffer.readGCOVFormat();
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if (Format == 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 (SmallVector<GCOVFunction *, 16>::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 (SmallVector<GCOVFunction *, 16>::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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FI.print();
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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, 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 != GCNO_402)
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Buff.readInt(); // Checksum #2
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Name = Buff.readString();
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if (Format == GCNO_402 || Format == GCNO_404)
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Filename = Buff.readString();
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if (Format == GCDA_402 || Format == 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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assert (Buff.readBlockTag() && "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 (SmallVector<GCOVBlock *, 16>::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 (SmallVector<GCOVBlock *, 16>::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 (SmallVector<uint32_t, 16>::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 (SmallVector<uint32_t, 16>::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 (SmallVector<uint32_t, 16>::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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