Method LoadCodeCacheIfNeeded

src/v8runtime/V8Runtime.cpp:309–339

}

std::unique_ptr<v8::ScriptCompiler::CachedData>
V8Runtime::LoadCodeCacheIfNeeded(const std::string &sourceURL) {
  // caching is for main runtime only
  if (isSharedRuntime_) {
    return nullptr;
  }

  if (config_->codecacheMode == V8RuntimeConfig::CodecacheMode::kNone) {
    return nullptr;
  }

  std::filesystem::path codecachePath(config_->codecacheDir);
  codecachePath /= std::filesystem::path(sourceURL).filename();
  auto *file = std::fopen(codecachePath.string().c_str(), "rb");
  if (!file) {
    LOG(INFO) << "Cannot load codecache file: " << codecachePath.string();
    return nullptr;
  }
  std::fseek(file, 0, SEEK_END);
  size_t size = std::ftell(file);
  uint8_t *buffer = new uint8_t[size];
  std::rewind(file);

  std::fread(buffer, size, 1, file);
  std::fclose(file);

  return std::make_unique<v8::ScriptCompiler::CachedData>(
      buffer,
      static_cast<int>(size),
      v8::ScriptCompiler::CachedData::BufferPolicy::BufferOwned);
}

bool V8Runtime::SaveCodeCacheIfNeeded(
    const v8::Local<v8::Script> &script,