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/*
* Copyright (C) 2020 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 SRC_TRACE_PROCESSOR_IMPORTERS_NINJA_NINJA_LOG_PARSER_H_
#define SRC_TRACE_PROCESSOR_IMPORTERS_NINJA_NINJA_LOG_PARSER_H_
#include <stdint.h>
#include <map>
#include <string>
#include <vector>
#include "src/trace_processor/importers/common/chunked_trace_reader.h"
#include "src/trace_processor/importers/common/trace_parser.h"
namespace perfetto {
namespace trace_processor {
class TraceProcessorContext;
// This class parses Ninja's (the build system, ninja-build.org) build logs and
// turns them into traces. A ninja log typically contains the logs of >1 ninja
// invocation. We map those as follows:
// - For each ninja invocation we create one process in the trace (from the UI
// perspective a process is a group of tracks).
// - Within each invocation we work out the parallelism from the time stamp and
// create one thread for each concurent stream of jobs.
// Caveat: this works only if ninja didn't recompact the logs. Once recompaction
// happens (can be forced via ninja -t recompact) there is no way to identify
// the boundaries of each build (recompaction deletes, for each hash, all but
// the most recent timestamp and rewrites the log).
class NinjaLogParser : public ChunkedTraceReader {
public:
explicit NinjaLogParser(TraceProcessorContext*);
~NinjaLogParser() override;
NinjaLogParser(const NinjaLogParser&) = delete;
NinjaLogParser& operator=(const NinjaLogParser&) = delete;
// ChunkedTraceReader implementation
util::Status Parse(std::unique_ptr<uint8_t[]>, size_t) override;
void NotifyEndOfFile() override;
private:
struct Job {
Job(uint32_t b, int64_t s, int64_t e, uint64_t h, const std::string& n)
: build_id(b), start_ms(s), end_ms(e), hash(h), names(n) {}
uint32_t build_id; // The synthesized PID of the build "process".
int64_t start_ms;
int64_t end_ms;
uint64_t hash; // Hash of the compiler invocation cmdline.
// Typically the one output for the compiler invocation. In case of actions
// generating multiple outputs this contains the join of all output names.
std::string names;
};
TraceProcessorContext* const ctx_;
bool header_parsed_ = false;
int64_t last_end_seen_ = 0;
uint32_t cur_build_id_ = 0;
std::vector<Job> jobs_;
std::vector<char> log_;
};
} // namespace trace_processor
} // namespace perfetto
#endif // SRC_TRACE_PROCESSOR_IMPORTERS_NINJA_NINJA_LOG_PARSER_H_
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