/*
|
* Copyright 2016 The Android Open Source Project
|
*
|
* Licensed under the Apache License, Version 2.0 (the "License");
|
* you may not use this file except in compliance with the License.
|
* You may obtain a copy of the License at
|
*
|
* http://www.apache.org/licenses/LICENSE-2.0
|
*
|
* Unless required by applicable law or agreed to in writing, software
|
* distributed under the License is distributed on an "AS IS" BASIS,
|
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
|
* See the License for the specific language governing permissions and
|
* limitations under the License.
|
*/
|
|
#ifndef __VTS_SYSFUZZER_LIBMEASUREMENT_GCDA_FILE_H__
|
#define __VTS_SYSFUZZER_LIBMEASUREMENT_GCDA_FILE_H__
|
|
#include <string>
|
|
#include "gcov_basic_io.h"
|
|
using namespace std;
|
|
namespace android {
|
namespace vts {
|
|
// Basic I/O methods for a GCOV file.
|
class GcdaFile {
|
public:
|
explicit GcdaFile(const string& filename) : filename_(filename) {}
|
virtual ~GcdaFile() {};
|
|
// Opens a file.
|
bool Open();
|
|
// Closes a file and returns any existing error code.
|
int Close();
|
|
// Synchronizes to the given base and length.
|
void Sync(unsigned base, unsigned length);
|
|
// Reads a string array where the maximum number of strings is also specified.
|
unsigned ReadStringArray(char** string_array, unsigned num_strings);
|
|
// Reads a string.
|
const char* ReadString();
|
|
// Reads an unsigned integer.
|
unsigned ReadUnsigned();
|
|
// Reads 'words' number of words.
|
const unsigned* ReadWords(unsigned words);
|
|
// Reads a counter.
|
gcov_type ReadCounter();
|
|
// Write a block using 'size'.
|
void WriteBlock(unsigned size);
|
|
// Allocates memory for length.
|
void Allocate(unsigned length);
|
|
// Processes the magic tag.
|
int Magic(unsigned magic, unsigned expected);
|
|
// Returns the current position in the file.
|
inline unsigned Position() const {
|
return gcov_var_.start + gcov_var_.offset;
|
}
|
|
// Returns non-zero error code if there's an error.
|
inline int IsError() const {
|
return gcov_var_.file ? gcov_var_.error : 1;
|
}
|
|
protected:
|
inline unsigned FromFile(unsigned value) {
|
if (gcov_var_.endian) {
|
value = (value >> 16) | (value << 16);
|
value = ((value & 0xff00ff) << 8) | ((value >> 8) & 0xff00ff);
|
}
|
return value;
|
}
|
|
private:
|
// The GCOV var data structure for an opened file.
|
struct gcov_var_t gcov_var_;
|
const string& filename_;
|
};
|
|
} // namespace vts
|
} // namespace android
|
|
#endif
|
