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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_ENVIRONMENT_H_
#define SIMPLE_PERF_ENVIRONMENT_H_
#include <sys/types.h>
#include <functional>
#include <set>
#include <string>
#include <vector>
#include "build_id.h"
std::vector<int> GetOnlineCpus();
std::vector<int> GetCpusFromString(const std::string& s);
constexpr char DEFAULT_KERNEL_MMAP_NAME[] = "[kernel.kallsyms]_text";
struct KernelMmap {
std::string name;
uint64_t start_addr;
uint64_t len;
std::string filepath;
};
void GetKernelAndModuleMmaps(KernelMmap* kernel_mmap, std::vector<KernelMmap>* module_mmaps);
struct ThreadComm {
pid_t pid, tid;
std::string comm;
};
bool GetThreadComms(std::vector<ThreadComm>* thread_comms);
constexpr char DEFAULT_EXECNAME_FOR_THREAD_MMAP[] = "//anon";
struct ThreadMmap {
uint64_t start_addr;
uint64_t len;
uint64_t pgoff;
std::string name;
bool executable;
};
bool GetThreadMmapsInProcess(pid_t pid, std::vector<ThreadMmap>* thread_mmaps);
constexpr char DEFAULT_KERNEL_FILENAME_FOR_BUILD_ID[] = "[kernel.kallsyms]";
bool GetKernelBuildId(BuildId* build_id);
bool GetModuleBuildId(const std::string& module_name, BuildId* build_id);
bool GetValidThreadsFromProcessString(const std::string& pid_str, std::set<pid_t>* tid_set);
bool GetValidThreadsFromThreadString(const std::string& tid_str, std::set<pid_t>* tid_set);
bool GetExecPath(std::string* exec_path);
// Expose the following functions for unit tests.
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(const std::string& symbol_file,
std::function<bool(const KernelSymbol&)> callback);
bool CheckPerfEventLimit();
bool GetMaxSampleFrequency(uint64_t* max_sample_freq);
std::string GetHardwareFromCpuInfo(const std::string& cpu_info);
#endif // SIMPLE_PERF_ENVIRONMENT_H_
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