123456789101112131415161718192021222324252627282930313233343536373839404142434445 |
- // Copyright 2022 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 SERVICES_DEVICE_COMPUTE_PRESSURE_HOST_PROCESSOR_INFO_SCANNER_H_
- #define SERVICES_DEVICE_COMPUTE_PRESSURE_HOST_PROCESSOR_INFO_SCANNER_H_
- #include <vector>
- #include "base/sequence_checker.h"
- #include "base/thread_annotations.h"
- #include "services/device/compute_pressure/core_times.h"
- namespace device {
- // Parses CPU time usage stats from host_processor_info.
- //
- // This class is not thread-safe. Each instance must be used on the same
- // sequence, which must allow blocking I/O. The constructor may be used on a
- // different sequence.
- class HostProcessorInfoScanner {
- public:
- HostProcessorInfoScanner();
- ~HostProcessorInfoScanner();
- HostProcessorInfoScanner(const HostProcessorInfoScanner&) = delete;
- HostProcessorInfoScanner& operator=(const HostProcessorInfoScanner&) = delete;
- const std::vector<CoreTimes>& core_times() const {
- DCHECK_CALLED_ON_VALID_SEQUENCE(sequence_checker_);
- return core_times_;
- }
- bool Update();
- private:
- SEQUENCE_CHECKER(sequence_checker_);
- std::vector<CoreTimes> core_times_ GUARDED_BY_CONTEXT(sequence_checker_);
- };
- } // namespace device
- #endif // SERVICES_DEVICE_COMPUTE_PRESSURE_HOST_PROCESSOR_INFO_SCANNER_H_
|