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/*
* Copyright (C) 2015 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 SIMPLE_PERF_UTILS_H_
#define SIMPLE_PERF_UTILS_H_
#include <stddef.h>
#include <string>
#include <vector>
#include <android-base/logging.h>
#include <android-base/macros.h>
#include <ziparchive/zip_archive.h>
static inline uint64_t Align(uint64_t value, uint64_t alignment) {
return (value + alignment - 1) & ~(alignment - 1);
}
#ifdef _WIN32
#define CLOSE_ON_EXEC_MODE ""
#else
#define CLOSE_ON_EXEC_MODE "e"
#endif
// OneTimeAllocator is used to allocate memory many times and free only once at the end.
// It reduces the cost to free each allocated memory.
class OneTimeFreeAllocator {
public:
OneTimeFreeAllocator(size_t unit_size = 8192u)
: unit_size_(unit_size), cur_(nullptr), end_(nullptr) {
}
~OneTimeFreeAllocator() {
Clear();
}
void Clear();
const char* AllocateString(const std::string& s);
private:
const size_t unit_size_;
std::vector<char*> v_;
char* cur_;
char* end_;
};
class FileHelper {
public:
static FileHelper OpenReadOnly(const std::string& filename);
static FileHelper OpenWriteOnly(const std::string& filename);
FileHelper(FileHelper&& other) {
fd_ = other.fd_;
other.fd_ = -1;
}
~FileHelper();
explicit operator bool() const {
return fd_ != -1;
}
int fd() const {
return fd_;
}
private:
FileHelper(int fd) : fd_(fd) {}
int fd_;
DISALLOW_COPY_AND_ASSIGN(FileHelper);
};
class ArchiveHelper {
public:
ArchiveHelper(int fd, const std::string& debug_filename);
~ArchiveHelper();
explicit operator bool() const {
return valid_;
}
ZipArchiveHandle &archive_handle() {
return handle_;
}
private:
ZipArchiveHandle handle_;
bool valid_;
DISALLOW_COPY_AND_ASSIGN(ArchiveHelper);
};
template <class T>
void MoveFromBinaryFormat(T& data, const char*& p) {
data = *reinterpret_cast<const T*>(p);
p += sizeof(T);
}
void PrintIndented(size_t indent, const char* fmt, ...);
void FprintIndented(FILE* fp, size_t indent, const char* fmt, ...);
bool IsPowerOfTwo(uint64_t value);
void GetEntriesInDir(const std::string& dirpath, std::vector<std::string>* files,
std::vector<std::string>* subdirs);
bool IsDir(const std::string& dirpath);
bool IsRegularFile(const std::string& filename);
uint64_t GetFileSize(const std::string& filename);
bool MkdirWithParents(const std::string& path);
bool XzDecompress(const std::string& compressed_data, std::string* decompressed_data);
bool GetLogSeverity(const std::string& name, android::base::LogSeverity* severity);
bool IsRoot();
struct KernelSymbol {
uint64_t addr;
char type;
const char* name;
const char* module; // If nullptr, the symbol is not in a kernel module.
};
bool ProcessKernelSymbols(std::string& symbol_data,
std::function<bool(const KernelSymbol&)> callback);
size_t GetPageSize();
uint64_t ConvertBytesToValue(const char* bytes, uint32_t size);
#endif // SIMPLE_PERF_UTILS_H_
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