| // Copyright 2019 The Fuchsia Authors. All rights reserved. |
| // Use of this source code is governed by a BSD-style license that can be |
| // found in the LICENSE file. |
| |
| #include "config/packed_event_codes.h" |
| namespace cobalt { |
| namespace config { |
| |
| namespace { |
| |
| // Used to mask off the version portion of the packed_event_codes. |
| const uint64_t kVersionHeaderMask = (0b1111ull << 60); |
| |
| uint32_t ReadVersion(uint64_t packed_event_codes) { |
| return (packed_event_codes & kVersionHeaderMask) >> 60; |
| } |
| |
| } // namespace |
| |
| std::vector<uint32_t> UnpackEventCodes(uint64_t packed_event_codes) { |
| std::vector<uint32_t> event_codes; |
| |
| if (ReadVersion(packed_event_codes) != 0) { |
| return ((std::vector<uint32_t>){0, 0, 0, 0, 0}); |
| } |
| |
| for (int i = 0; i < 5; i++) { |
| event_codes.push_back((packed_event_codes & (kEventCodeMask << (10 * i))) >> |
| (10 * i)); |
| } |
| return event_codes; |
| } |
| |
| } // namespace config |
| } // namespace cobalt |