105 lines
2.6 KiB
C++
105 lines
2.6 KiB
C++
/*
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* Copyright (C) 2018 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 TOOLS_TRACE_TO_TEXT_UTILS_H_
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#define TOOLS_TRACE_TO_TEXT_UTILS_H_
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#include <stdio.h>
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#include <functional>
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#include <iostream>
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#include <memory>
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#include <vector>
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#include "perfetto/base/build_config.h"
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#include "perfetto/ext/base/optional.h"
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#include "perfetto/ext/base/paged_memory.h"
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#include "src/profiling/deobfuscator.h"
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#if PERFETTO_BUILDFLAG(PERFETTO_ZLIB)
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#include <zlib.h>
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#endif
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namespace perfetto {
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namespace trace_processor {
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class TraceProcessor;
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}
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namespace protos {
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class TracePacket;
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}
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namespace trace_to_text {
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// When running in Web Assembly, fflush() is a no-op and the stdio buffering
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// sends progress updates to JS only when a write ends with \n.
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#if PERFETTO_BUILDFLAG(PERFETTO_OS_WASM)
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constexpr char kProgressChar = '\n';
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#else
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constexpr char kProgressChar = '\r';
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#endif
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bool ReadTrace(trace_processor::TraceProcessor* tp, std::istream* input);
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void IngestTraceOrDie(trace_processor::TraceProcessor* tp,
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const std::string& trace_proto);
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class TraceWriter {
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public:
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TraceWriter(std::ostream* output);
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virtual ~TraceWriter();
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void Write(const std::string& s);
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virtual void Write(const char* data, size_t sz);
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private:
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std::ostream* output_;
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};
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#if PERFETTO_BUILDFLAG(PERFETTO_ZLIB)
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class DeflateTraceWriter : public TraceWriter {
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public:
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DeflateTraceWriter(std::ostream* output);
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~DeflateTraceWriter() override;
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void Write(const char* data, size_t sz) override;
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private:
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void Flush();
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void CheckEq(int actual_code, int expected_code);
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z_stream stream_{};
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base::PagedMemory buf_;
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uint8_t* const start_;
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uint8_t* const end_;
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};
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#else
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// Fallback implementation. Will print an error and write uncompressed.
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class DeflateTraceWriter : public TraceWriter {
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public:
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DeflateTraceWriter(std::ostream* output);
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~DeflateTraceWriter() override;
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};
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#endif // PERFETTO_BUILDFLAG(PERFETTO_ZLIB)
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} // namespace trace_to_text
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} // namespace perfetto
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#endif // TOOLS_TRACE_TO_TEXT_UTILS_H_
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