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105 lines
3.5 KiB
105 lines
3.5 KiB
/*
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* Copyright (C) 2021 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 ART_ODREFRESH_ODR_COMPILATION_LOG_H_
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#define ART_ODREFRESH_ODR_COMPILATION_LOG_H_
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#include <time.h>
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#include <cstdint>
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#include <iosfwd>
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#include <vector>
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#include <odrefresh/odrefresh.h>
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#include <odr_metrics.h>
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namespace art {
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namespace odrefresh {
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// OdrCompilationLogEntry represents the result of a compilation attempt by odrefresh.
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struct OdrCompilationLogEntry {
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int64_t apex_version;
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int64_t last_update_millis;
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int32_t trigger;
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time_t when;
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int32_t exit_code;
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};
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// Read an `OdrCompilationLogEntry` from an input stream.
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std::istream& operator>>(std::istream& is, OdrCompilationLogEntry& entry);
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// Write an `OdrCompilationLogEntry` to an output stream.
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std::ostream& operator<<(std::ostream& os, const OdrCompilationLogEntry& entry);
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// Equality test for two `OdrCompilationLogEntry` instances.
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bool operator==(const OdrCompilationLogEntry& lhs, const OdrCompilationLogEntry& rhs);
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bool operator!=(const OdrCompilationLogEntry& lhs, const OdrCompilationLogEntry& rhs);
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class OdrCompilationLog {
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public:
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// The compilation log location is in the same directory as used for the metricss.log. This
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// directory is only used by odrefresh whereas the ART apexdata directory is also used by odsign
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// and others which may lead to the deletion (or rollback) of the log file.
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static constexpr const char* kCompilationLogFile = "/data/misc/odrefresh/compilation-log.txt";
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// Version string that appears on the first line of the compilation log.
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static constexpr const char kLogVersion[] = "CompilationLog/1.0";
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// Number of log entries in the compilation log.
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static constexpr const size_t kMaxLoggedEntries = 4;
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explicit OdrCompilationLog(const char* compilation_log_path = kCompilationLogFile);
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~OdrCompilationLog();
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// Applies policy to compilation log to determine whether to recompile.
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bool ShouldAttemptCompile(int64_t apex_version,
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int64_t last_update_millis,
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OdrMetrics::Trigger trigger,
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time_t now = 0) const;
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// Returns the number of entries in the log. The log never exceeds `kMaxLoggedEntries`.
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size_t NumberOfEntries() const;
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// Returns the entry at position `index` or nullptr if `index` is out of bounds.
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const OdrCompilationLogEntry* Peek(size_t index) const;
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void Log(int64_t apex_version,
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int64_t last_update_millis,
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OdrMetrics::Trigger trigger,
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ExitCode compilation_result);
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void Log(int64_t apex_version,
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int64_t last_update_millis,
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OdrMetrics::Trigger trigger,
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time_t when,
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ExitCode compilation_result);
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// Truncates the in memory log to have `kMaxLoggedEntries` records.
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void Truncate();
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private:
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bool Read();
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bool Write() const;
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std::vector<OdrCompilationLogEntry> entries_;
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const char* log_path_;
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};
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} // namespace odrefresh
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} // namespace art
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#endif // ART_ODREFRESH_ODR_COMPILATION_LOG_H_
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