1*71db0c75SAndroid Build Coastguard Worker //===-- Linux implementation of the pthread_once function -----------------===// 2*71db0c75SAndroid Build Coastguard Worker // 3*71db0c75SAndroid Build Coastguard Worker // Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions. 4*71db0c75SAndroid Build Coastguard Worker // See https://llvm.org/LICENSE.txt for license information. 5*71db0c75SAndroid Build Coastguard Worker // SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception 6*71db0c75SAndroid Build Coastguard Worker // 7*71db0c75SAndroid Build Coastguard Worker //===----------------------------------------------------------------------===// 8*71db0c75SAndroid Build Coastguard Worker 9*71db0c75SAndroid Build Coastguard Worker #include "pthread_once.h" 10*71db0c75SAndroid Build Coastguard Worker #include "src/__support/common.h" 11*71db0c75SAndroid Build Coastguard Worker #include "src/__support/macros/config.h" 12*71db0c75SAndroid Build Coastguard Worker #include "src/__support/threads/callonce.h" 13*71db0c75SAndroid Build Coastguard Worker 14*71db0c75SAndroid Build Coastguard Worker #include <pthread.h> // For pthread_once_t and __pthread_once_func_t definitions. 15*71db0c75SAndroid Build Coastguard Worker 16*71db0c75SAndroid Build Coastguard Worker namespace LIBC_NAMESPACE_DECL { 17*71db0c75SAndroid Build Coastguard Worker 18*71db0c75SAndroid Build Coastguard Worker LLVM_LIBC_FUNCTION(int, pthread_once, 19*71db0c75SAndroid Build Coastguard Worker (pthread_once_t * flag, __pthread_once_func_t func)) { 20*71db0c75SAndroid Build Coastguard Worker return callonce(reinterpret_cast<CallOnceFlag *>(flag), 21*71db0c75SAndroid Build Coastguard Worker reinterpret_cast<CallOnceCallback *>(func)); 22*71db0c75SAndroid Build Coastguard Worker } 23*71db0c75SAndroid Build Coastguard Worker 24*71db0c75SAndroid Build Coastguard Worker } // namespace LIBC_NAMESPACE_DECL 25