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// Copyright 2017 The Chromium Authors. All rights reserved.
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
#ifndef ATRACE_PROCESS_DUMP_H_
#define ATRACE_PROCESS_DUMP_H_
#include <stdio.h>
#include <stdlib.h>
#include <unistd.h>
#include <memory>
#include <set>
#include <string>
#include "logging.h"
#include "process_info.h"
#include "time_utils.h"
// Program that collects processes, thread names, per-process memory stats and
// other minor metrics from /proc filesystem. It's aimed to extend systrace
// with more actionable number to hit performance issues.
class AtraceProcessDump {
public:
enum FullDumpMode {
kDisabled,
kAllProcesses,
kAllJavaApps,
kOnlyWhitelisted,
};
AtraceProcessDump();
~AtraceProcessDump();
void RunAndPrintJson(FILE* stream);
void Stop();
void SetDumpInterval(int interval_ms);
// Negative number or zero means unlimited number of dumps.
void set_dump_count(int count) { dump_count_ = count; }
void set_full_dump_mode(FullDumpMode mode) { full_dump_mode_ = mode; }
void set_full_dump_whitelist(const std::set<std::string> &whitelist) {
CHECK(full_dump_mode_ == FullDumpMode::kOnlyWhitelisted);
full_dump_whitelist_ = whitelist;
}
void enable_graphics_stats() { graphics_stats_ = true; }
void enable_print_smaps() { print_smaps_ = true; }
private:
AtraceProcessDump(const AtraceProcessDump&) = delete;
void operator=(const AtraceProcessDump&) = delete;
using ProcessMap = std::map<int, std::unique_ptr<ProcessInfo>>;
using ProcessSnapshotMap = std::map<int, std::unique_ptr<ProcessSnapshot>>;
void TakeGlobalSnapshot();
void TakeAndSerializeMemInfo();
bool UpdatePersistentProcessInfo(int pid);
bool ShouldTakeFullDump(const ProcessInfo* process);
void SerializeSnapshot();
void SerializePersistentProcessInfo();
void Cleanup();
int self_pid_;
int dump_count_;
bool graphics_stats_ = false;
bool print_smaps_ = false;
FullDumpMode full_dump_mode_ = FullDumpMode::kDisabled;
std::set<std::string> full_dump_whitelist_;
FILE* out_;
ProcessMap processes_;
ProcessSnapshotMap snapshot_;
uint64_t snapshot_timestamp_;
std::set<int> full_dump_whitelisted_pids_;
std::unique_ptr<time_utils::PeriodicTimer> snapshot_timer_;
int dump_interval_in_timer_ticks_;
};
#endif // ATRACE_PROCESS_DUMP_H_
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