David Rogers | 5cc5ce8 | 2020-03-13 19:19:03 -0700 | [diff] [blame] | 1 | // Copyright 2020 The Pigweed Authors |
| 2 | // |
| 3 | // Licensed under the Apache License, Version 2.0 (the "License"); you may not |
| 4 | // use this file except in compliance with the License. You may obtain a copy of |
| 5 | // the License at |
| 6 | // |
| 7 | // https://www.apache.org/licenses/LICENSE-2.0 |
| 8 | // |
| 9 | // Unless required by applicable law or agreed to in writing, software |
| 10 | // distributed under the License is distributed on an "AS IS" BASIS, WITHOUT |
| 11 | // WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the |
| 12 | // License for the specific language governing permissions and limitations under |
| 13 | // the License. |
| 14 | |
| 15 | #include "pw_kvs/flash_partition_with_stats.h" |
| 16 | |
| 17 | #include <cstdio> |
| 18 | |
| 19 | #include "pw_kvs/flash_memory.h" |
| 20 | #include "pw_log/log.h" |
| 21 | |
| 22 | namespace pw::kvs { |
| 23 | |
| 24 | Status FlashPartitionWithStats::SaveStorageStats(const KeyValueStore& kvs, |
| 25 | const char* label) { |
| 26 | // If size is zero saving stats is disabled so do not save any stats. |
| 27 | if (sector_counters_.size() == 0) { |
| 28 | return Status::OK; |
| 29 | } |
| 30 | |
| 31 | KeyValueStore::StorageStats stats = kvs.GetStorageStats(); |
| 32 | size_t utilization_percentage = (stats.in_use_bytes * 100) / size_bytes(); |
| 33 | |
| 34 | const char* file_name = "flash_stats.csv"; |
| 35 | std::FILE* out_file = std::fopen(file_name, "a+"); |
| 36 | if (out_file == nullptr) { |
| 37 | PW_LOG_ERROR("Failed to dump to %s", file_name); |
| 38 | return Status::NOT_FOUND; |
| 39 | } |
| 40 | |
| 41 | // If file is empty add the header row. |
| 42 | std::fseek(out_file, 0, SEEK_END); |
| 43 | if (std::ftell(out_file) == 0) { |
| 44 | std::fprintf(out_file, |
| 45 | "Test Name,Total Erases,Utilization Percentage,Transaction " |
| 46 | "Count,Entry Count"); |
| 47 | for (size_t i = 0; i < sector_counters_.size(); i++) { |
| 48 | std::fprintf(out_file, ",Sector %zu", i); |
| 49 | } |
| 50 | std::fprintf(out_file, "\n"); |
| 51 | } |
| 52 | |
| 53 | std::fprintf(out_file, "\"%s\",%zu", label, total_erase_count()); |
| 54 | std::fprintf(out_file, |
| 55 | ",%zu,%u,%zu", |
| 56 | utilization_percentage, |
Wyatt Hepler | 09b3a2a | 2020-03-25 13:18:37 -0700 | [diff] [blame^] | 57 | unsigned(kvs.transaction_count()), |
David Rogers | 5cc5ce8 | 2020-03-13 19:19:03 -0700 | [diff] [blame] | 58 | kvs.size()); |
| 59 | |
| 60 | for (size_t counter : sector_erase_counters()) { |
| 61 | std::fprintf(out_file, ",%zu", counter); |
| 62 | } |
| 63 | |
| 64 | std::fprintf(out_file, "\n"); |
| 65 | std::fclose(out_file); |
| 66 | return Status::OK; |
| 67 | } |
| 68 | |
| 69 | Status FlashPartitionWithStats::Erase(Address address, size_t num_sectors) { |
| 70 | size_t base_index = address / FlashPartition::sector_size_bytes(); |
| 71 | if (base_index < sector_counters_.size()) { |
| 72 | num_sectors = std::min(num_sectors, (sector_counters_.size() - base_index)); |
| 73 | for (size_t i = 0; i < num_sectors; i++) { |
| 74 | sector_counters_[base_index + i]++; |
| 75 | } |
| 76 | } |
| 77 | |
| 78 | return FlashPartition::Erase(address, num_sectors); |
| 79 | } |
| 80 | |
| 81 | } // namespace pw::kvs |