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/*
* Copyright (C) 2018 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 TOOLS_TRACE_TO_TEXT_UTILS_H_
#define TOOLS_TRACE_TO_TEXT_UTILS_H_
#include <stdio.h>
#include <sys/ioctl.h>
#include <unistd.h>
#include <functional>
#include <iostream>
#include <memory>
#include <vector>
#include "perfetto/base/build_config.h"
#include "perfetto/ext/base/optional.h"
#include "perfetto/ext/base/paged_memory.h"
#include "perfetto/profiling/deobfuscator.h"
#if PERFETTO_BUILDFLAG(PERFETTO_ZLIB)
#include <zlib.h>
#endif
namespace perfetto {
namespace trace_processor {
class TraceProcessor;
}
namespace protos {
class TracePacket;
}
namespace trace_to_text {
// When running in Web Assembly, fflush() is a no-op and the stdio buffering
// sends progress updates to JS only when a write ends with \n.
#if PERFETTO_BUILDFLAG(PERFETTO_OS_WASM)
constexpr char kProgressChar = '\n';
#else
constexpr char kProgressChar = '\r';
#endif
void ForEachPacketBlobInTrace(
std::istream* input,
const std::function<void(std::unique_ptr<char[]>, size_t)>&);
base::Optional<std::string> GetPerfettoProguardMapPath();
bool ReadTrace(trace_processor::TraceProcessor* tp, std::istream* input);
void WriteTracePacket(const std::string& str, std::ostream* output);
// Generate ObfuscationMapping protos for all obfuscated java names in the
// database.
// Wrap them in proto-encoded TracePackets messages and call callback.
void DeobfuscateDatabase(
trace_processor::TraceProcessor* tp,
const std::map<std::string, profiling::ObfuscatedClass>& mapping,
std::function<void(const std::string&)> callback);
class TraceWriter {
public:
TraceWriter(std::ostream* output);
virtual ~TraceWriter();
void Write(std::string s);
virtual void Write(const char* data, size_t sz);
private:
std::ostream* output_;
};
#if PERFETTO_BUILDFLAG(PERFETTO_ZLIB)
class DeflateTraceWriter : public TraceWriter {
public:
DeflateTraceWriter(std::ostream* output);
~DeflateTraceWriter() override;
void Write(const char* data, size_t sz) override;
private:
void Flush();
void CheckEq(int actual_code, int expected_code);
z_stream stream_{};
base::PagedMemory buf_;
uint8_t* const start_;
uint8_t* const end_;
};
#else
// Fallback implementation. Will print an error and write uncompressed.
class DeflateTraceWriter : public TraceWriter {
public:
DeflateTraceWriter(std::ostream* output);
~DeflateTraceWriter() override;
};
#endif // PERFETTO_BUILDFLAG(PERFETTO_ZLIB)
} // namespace trace_to_text
} // namespace perfetto
#endif // TOOLS_TRACE_TO_TEXT_UTILS_H_
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