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llvm-cov: Split GCOVFile's read into GCNO and GCDA.

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This splits the file-scope read() function into readGCNO() and
readGCDA(). Also broke file format read into functions that first read
the file type, then check the version.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@196353 91177308-0d34-0410-b5e6-96231b3b80d8
This commit is contained in:
Yuchen Wu
2013-12-04 04:49:23 +00:00
parent 045d547516
commit 812ad83e58
3 changed files with 106 additions and 80 deletions
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73
include/llvm/Support/GCOV.h
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@@ -28,12 +28,9 @@ class GCOVBlock;
class FileInfo;
namespace GCOV {
enum GCOVFormat {
InvalidGCOV,
GCNO_402,
GCNO_404,
GCDA_402,
GCDA_404
enum GCOVVersion {
V402,
V404
};
} // end GCOV namespace
@@ -43,21 +40,43 @@ class GCOVBuffer {
public:
GCOVBuffer(MemoryBuffer *B) : Buffer(B), Cursor(0) {}
/// readGCOVFormat - Read GCOV signature at the beginning of buffer.
GCOV::GCOVFormat readGCOVFormat() {
StringRef Magic = Buffer->getBuffer().slice(0, 8);
Cursor = 8;
if (Magic == "oncg*404")
return GCOV::GCNO_404;
else if (Magic == "oncg*204")
return GCOV::GCNO_402;
else if (Magic == "adcg*404")
return GCOV::GCDA_404;
else if (Magic == "adcg*204")
return GCOV::GCDA_402;
Cursor = 0;
return GCOV::InvalidGCOV;
/// readGCNOFormat - Check GCNO signature is valid at the beginning of buffer.
bool readGCNOFormat() {
StringRef File = Buffer->getBuffer().slice(0, 4);
if (File != "oncg") {
errs() << "Unexpected file type: " << File << ".\n";
return false;
}
Cursor = 4;
return true;
}
/// readGCDAFormat - Check GCDA signature is valid at the beginning of buffer.
bool readGCDAFormat() {
StringRef File = Buffer->getBuffer().slice(0, 4);
if (File != "adcg") {
errs() << "Unexpected file type: " << File << ".\n";
return false;
}
Cursor = 4;
return true;
}
/// readGCOVVersion - Read GCOV version.
bool readGCOVVersion(GCOV::GCOVVersion &Version) {
StringRef VersionStr = Buffer->getBuffer().slice(Cursor, Cursor+4);
if (VersionStr == "*204") {
Cursor += 4;
Version = GCOV::V402;
return true;
}
if (VersionStr == "*404") {
Cursor += 4;
Version = GCOV::V404;
return true;
}
errs() << "Unexpected version: " << VersionStr << ".\n";
return false;
}
/// readFunctionTag - If cursor points to a function tag then increment the
@@ -193,12 +212,16 @@ private:
/// (.gcno and .gcda).
class GCOVFile {
public:
GCOVFile() : Checksum(0), Functions(), RunCount(0), ProgramCount(0) {}
GCOVFile() : gcnoInitialized(false), Checksum(0), Functions(), RunCount(0),
ProgramCount(0) {}
~GCOVFile();
bool read(GCOVBuffer &Buffer);
bool readGCNO(GCOVBuffer &Buffer);
bool readGCDA(GCOVBuffer &Buffer);
void dump() const;
void collectLineCounts(FileInfo &FI);
private:
bool gcnoInitialized;
GCOV::GCOVVersion Version;
uint32_t Checksum;
SmallVector<GCOVFunction *, 16> Functions;
uint32_t RunCount;
@@ -218,8 +241,8 @@ class GCOVFunction {
public:
GCOVFunction() : Ident(0), LineNumber(0) {}
~GCOVFunction();
bool readGCNO(GCOVBuffer &Buffer, GCOV::GCOVFormat Format);
bool readGCDA(GCOVBuffer &Buffer, GCOV::GCOVFormat Format);
bool readGCNO(GCOVBuffer &Buffer, GCOV::GCOVVersion Version);
bool readGCDA(GCOVBuffer &Buffer, GCOV::GCOVVersion Version);
StringRef getFilename() const { return Filename; }
void dump() const;
void collectLineCounts(FileInfo &FI);