pw_kvs/size_report/with_kvs.cc

// Copyright 2021 The Pigweed Authors
//
// 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
//
//     https://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.

#include <cstring>

#include "pw_assert/check.h"
#include "pw_bloat/bloat_this_binary.h"
#include "pw_kvs/flash_test_partition.h"
#include "pw_kvs/key_value_store.h"
#include "pw_log/log.h"

char working_buffer[256];
volatile bool is_set;

constexpr size_t kMaxSectorCount = 64;
constexpr size_t kKvsMaxEntries = 32;

// For KVS magic value always use a random 32 bit integer rather than a human
// readable 4 bytes. See pw_kvs/format.h for more information.
static constexpr pw::kvs::EntryFormat kvs_format = {.magic = 0x22d3f8a0,
                                                    .checksum = nullptr};

volatile size_t kvs_entry_count;

pw::kvs::KeyValueStoreBuffer<kKvsMaxEntries, kMaxSectorCount> kvs(
    &pw::kvs::FlashTestPartition(), kvs_format);

int volatile* unoptimizable;

int main() {
  pw::bloat::BloatThisBinary();

  // Ensure we are paying the cost for log and assert.
  PW_CHECK_INT_GE(*unoptimizable, 0, "Ensure this CHECK logic stays");
  PW_LOG_INFO("We care about optimizing: %d", *unoptimizable);

  void* result =
      std::memset((void*)working_buffer, 0x55, sizeof(working_buffer));
  is_set = (result != nullptr);

  kvs.Init().IgnoreError();  // TODO(pwbug/387): Handle Status properly

  unsigned kvs_value = 42;
  kvs.Put("example_key", kvs_value)
      .IgnoreError();  // TODO(pwbug/387): Handle Status properly

  kvs_entry_count = kvs.size();

  unsigned read_value = 0;
  kvs.Get("example_key", &read_value)
      .IgnoreError();  // TODO(pwbug/387): Handle Status properly

  return 0;
}