Function get_shared_data

plugins/experimental/wasm/lib/src/exports.cc:227–246

SharedData

// SharedData
Word get_shared_data(Word key_ptr, Word key_size, Word value_ptr_ptr, Word value_size_ptr,
                     Word cas_ptr) {
  auto *context = contextOrEffectiveContext();
  auto key = context->wasmVm()->getMemory(key_ptr, key_size);
  if (!key) {
    return WasmResult::InvalidMemoryAccess;
  }
  std::pair<std::string, uint32_t> data;
  WasmResult result = context->getSharedData(key.value(), &data);
  if (result != WasmResult::Ok) {
    return result;
  }
  if (!context->wasm()->copyToPointerSize(data.first, value_ptr_ptr, value_size_ptr)) {
    return WasmResult::InvalidMemoryAccess;
  }
  if (!context->wasmVm()->setMemory(cas_ptr, sizeof(uint32_t), &data.second)) {
    return WasmResult::InvalidMemoryAccess;
  }
  return WasmResult::Ok;
}

Word set_shared_data(Word key_ptr, Word key_size, Word value_ptr, Word value_size, Word cas) {
  auto *context = contextOrEffectiveContext();