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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 <time.h>
#if defined(__linux__)
#include <sys/syscall.h>
#include <unistd.h>
#endif
#include <functional>
#include <memory>
#include <optional>
#include <set>
#include <string>
#include <utility>
#include <vector>
#include <android-base/file.h>
#include "build_id.h"
#include "perf_regs.h"
namespace simpleperf {
std::vector<int> GetOnlineCpus();
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 ThreadMmap {
uint64_t start_addr;
uint64_t len;
uint64_t pgoff;
std::string name;
uint32_t prot;
ThreadMmap() {}
ThreadMmap(uint64_t start, uint64_t len, uint64_t pgoff, const char* name, uint32_t prot)
: start_addr(start), len(len), pgoff(pgoff), name(name), prot(prot) {}
};
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,
const std::string& sysfs_dir = "/sys");
bool IsThreadAlive(pid_t tid);
std::vector<pid_t> GetAllProcesses();
std::vector<pid_t> GetThreadsInProcess(pid_t pid);
bool ReadThreadNameAndPid(pid_t tid, std::string* comm, pid_t* pid);
bool GetProcessForThread(pid_t tid, pid_t* pid);
bool GetThreadName(pid_t tid, std::string* name);
bool CheckPerfEventLimit();
bool SetPerfEventLimits(uint64_t sample_freq, size_t cpu_percent, uint64_t mlock_kb);
bool GetMaxSampleFrequency(uint64_t* max_sample_freq);
bool SetMaxSampleFrequency(uint64_t max_sample_freq);
bool GetCpuTimeMaxPercent(size_t* percent);
bool SetCpuTimeMaxPercent(size_t percent);
bool GetPerfEventMlockKb(uint64_t* mlock_kb);
bool SetPerfEventMlockKb(uint64_t mlock_kb);
bool CanRecordRawData();
std::optional<uint64_t> GetMemorySize();
ArchType GetMachineArch();
void PrepareVdsoFile();
std::set<pid_t> WaitForAppProcesses(const std::string& package_name);
void SetRunInAppToolForTesting(bool run_as, bool simpleperf_app_runner); // for testing only
bool RunInAppContext(const std::string& app_package_name, const std::string& cmd,
const std::vector<std::string>& args, size_t workload_args_size,
const std::string& output_filepath, bool need_tracepoint_events);
std::string GetAppType(const std::string& app_package_name);
void AllowMoreOpenedFiles();
class ScopedTempFiles {
public:
static std::unique_ptr<ScopedTempFiles> Create(const std::string& tmp_dir);
~ScopedTempFiles();
// If delete_in_destructor = true, the temp file will be deleted in the destructor of
// ScopedTempFile. Otherwise, it should be deleted by the caller.
static std::unique_ptr<TemporaryFile> CreateTempFile(bool delete_in_destructor = true);
static void RegisterTempFile(const std::string& path);
private:
ScopedTempFiles(const std::string& tmp_dir);
static std::string tmp_dir_;
static std::vector<std::string> files_to_delete_;
};
bool SignalIsIgnored(int signo);
enum {
kAndroidVersionP = 9,
kAndroidVersionQ = 10,
kAndroidVersionR = 11,
kAndroidVersionS = 12,
};
// Return 0 if no android version.
int GetAndroidVersion();
std::optional<std::pair<int, int>> GetKernelVersion();
std::string GetHardwareFromCpuInfo(const std::string& cpu_info);
bool MappedFileOnlyExistInMemory(const char* filename);
std::string GetCompleteProcessName(pid_t pid);
const char* GetTraceFsDir();
#if defined(__linux__)
static inline uint64_t GetSystemClock() {
timespec ts;
// Assume clock_gettime() doesn't fail.
clock_gettime(CLOCK_MONOTONIC, &ts);
return ts.tv_sec * 1000000000ULL + ts.tv_nsec;
}
#if defined(__ANDROID__)
bool IsInAppUid();
#endif
#if !defined(__ANDROID__) && !defined(ANDROID_HOST_MUSL)
static inline int gettid() {
return syscall(__NR_gettid);
}
#endif
struct ARMCpuModel {
uint32_t implementer = 0;
uint32_t partnum = 0;
std::vector<int> cpus;
};
std::vector<ARMCpuModel> GetARMCpuModels();
#endif // defined(__linux__)
std::optional<uint32_t> GetProcessUid(pid_t pid);
} // namespace simpleperf
#endif // SIMPLE_PERF_ENVIRONMENT_H_
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