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157 lines
4.6 KiB
157 lines
4.6 KiB
/*
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* Copyright (C) 2015 The Android Open Source Project
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*
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* Licensed under the Apache License, Version 2.0 (the "License");
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* you may not use this file except in compliance with the License.
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* You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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*/
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#ifndef SIMPLE_PERF_ENVIRONMENT_H_
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#define SIMPLE_PERF_ENVIRONMENT_H_
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#include <sys/types.h>
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#include <time.h>
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#if defined(__linux__)
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#include <sys/syscall.h>
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#include <unistd.h>
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#endif
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#include <functional>
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#include <memory>
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#include <optional>
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#include <set>
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#include <string>
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#include <utility>
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#include <vector>
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#include <android-base/file.h>
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#include "build_id.h"
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#include "perf_regs.h"
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namespace simpleperf {
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std::vector<int> GetOnlineCpus();
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struct KernelMmap {
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std::string name;
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uint64_t start_addr;
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uint64_t len;
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std::string filepath;
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};
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void GetKernelAndModuleMmaps(KernelMmap* kernel_mmap, std::vector<KernelMmap>* module_mmaps);
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struct ThreadMmap {
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uint64_t start_addr;
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uint64_t len;
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uint64_t pgoff;
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std::string name;
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uint32_t prot;
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ThreadMmap() {}
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ThreadMmap(uint64_t start, uint64_t len, uint64_t pgoff, const char* name, uint32_t prot)
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: start_addr(start), len(len), pgoff(pgoff), name(name), prot(prot) {}
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};
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bool GetThreadMmapsInProcess(pid_t pid, std::vector<ThreadMmap>* thread_mmaps);
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constexpr char DEFAULT_KERNEL_FILENAME_FOR_BUILD_ID[] = "[kernel.kallsyms]";
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bool GetKernelBuildId(BuildId* build_id);
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bool GetModuleBuildId(const std::string& module_name, BuildId* build_id,
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const std::string& sysfs_dir = "/sys");
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bool IsThreadAlive(pid_t tid);
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std::vector<pid_t> GetAllProcesses();
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std::vector<pid_t> GetThreadsInProcess(pid_t pid);
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bool ReadThreadNameAndPid(pid_t tid, std::string* comm, pid_t* pid);
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bool GetProcessForThread(pid_t tid, pid_t* pid);
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bool GetThreadName(pid_t tid, std::string* name);
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bool CheckPerfEventLimit();
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bool SetPerfEventLimits(uint64_t sample_freq, size_t cpu_percent, uint64_t mlock_kb);
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bool GetMaxSampleFrequency(uint64_t* max_sample_freq);
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bool SetMaxSampleFrequency(uint64_t max_sample_freq);
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bool GetCpuTimeMaxPercent(size_t* percent);
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bool SetCpuTimeMaxPercent(size_t percent);
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bool GetPerfEventMlockKb(uint64_t* mlock_kb);
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bool SetPerfEventMlockKb(uint64_t mlock_kb);
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bool CanRecordRawData();
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ArchType GetMachineArch();
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void PrepareVdsoFile();
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std::set<pid_t> WaitForAppProcesses(const std::string& package_name);
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void SetRunInAppToolForTesting(bool run_as, bool simpleperf_app_runner); // for testing only
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bool RunInAppContext(const std::string& app_package_name, const std::string& cmd,
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const std::vector<std::string>& args, size_t workload_args_size,
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const std::string& output_filepath, bool need_tracepoint_events);
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std::string GetAppType(const std::string& app_package_name);
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void AllowMoreOpenedFiles();
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class ScopedTempFiles {
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public:
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static std::unique_ptr<ScopedTempFiles> Create(const std::string& tmp_dir);
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~ScopedTempFiles();
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// If delete_in_destructor = true, the temp file will be deleted in the destructor of
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// ScopedTempFile. Otherwise, it should be deleted by the caller.
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static std::unique_ptr<TemporaryFile> CreateTempFile(bool delete_in_destructor = true);
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static void RegisterTempFile(const std::string& path);
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private:
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ScopedTempFiles(const std::string& tmp_dir);
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static std::string tmp_dir_;
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static std::vector<std::string> files_to_delete_;
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};
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bool SignalIsIgnored(int signo);
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enum {
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kAndroidVersionP = 9,
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kAndroidVersionQ = 10,
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kAndroidVersionR = 11,
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kAndroidVersionS = 12,
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};
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// Return 0 if no android version.
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int GetAndroidVersion();
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std::optional<std::pair<int, int>> GetKernelVersion();
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std::string GetHardwareFromCpuInfo(const std::string& cpu_info);
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bool MappedFileOnlyExistInMemory(const char* filename);
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std::string GetCompleteProcessName(pid_t pid);
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const char* GetTraceFsDir();
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#if defined(__linux__)
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static inline uint64_t GetSystemClock() {
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timespec ts;
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// Assume clock_gettime() doesn't fail.
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clock_gettime(CLOCK_MONOTONIC, &ts);
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return ts.tv_sec * 1000000000ULL + ts.tv_nsec;
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}
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#if !defined(__ANDROID__)
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static inline int gettid() {
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return syscall(__NR_gettid);
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}
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#endif
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std::optional<uid_t> GetProcessUid(pid_t pid);
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#endif // defined(__linux__)
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} // namespace simpleperf
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#endif // SIMPLE_PERF_ENVIRONMENT_H_
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