1 /* 2 * Copyright (c) 2021 Huawei Device Co., Ltd. 3 * Licensed under the Apache License, Version 2.0 (the "License"); 4 * you may not use this file except in compliance with the License. 5 * You may obtain a copy of the License at 6 * 7 * http://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, 11 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 12 * See the License for the specific language governing permissions and 13 * limitations under the License. 14 */ 15 16 #include <unistd.h> 17 18 #include "dgram_socket_client.h" 19 20 namespace OHOS { 21 namespace HiviewDFX { CheckSocket()22int DgramSocketClient::CheckSocket() 23 { 24 if (fdHandler >= 0) { 25 return fdHandler; 26 } 27 28 int fd = GenerateFD(); 29 if (fd < 0) { 30 return fd; 31 } 32 33 int ret; 34 int defaultValue = -1; 35 fdHandler.compare_exchange_strong(defaultValue, fd); 36 if (defaultValue != -1) { 37 ret = defaultValue; 38 close(fd); 39 } else { 40 ret = fd; 41 SetHandler(fd); 42 Connect(); 43 } 44 45 return ret; 46 } 47 } // namespace HiviewDFX 48 } // namespace OHOS 49