1 //===-- Linux implementation of the pthread_create function ---------------===// 2 // 3 // Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions. 4 // See https://llvm.org/LICENSE.txt for license information. 5 // SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception 6 // 7 //===----------------------------------------------------------------------===// 8 9 #include "pthread_create.h" 10 11 #include "src/__support/common.h" 12 #include "src/__support/threads/thread.h" 13 14 #include <errno.h> 15 #include <pthread.h> // For pthread_* type definitions. 16 17 namespace __llvm_libc { 18 19 static_assert(sizeof(pthread_t) == sizeof(__llvm_libc::Thread), 20 "Mismatch between pthread_t and internal Thread."); 21 22 LLVM_LIBC_FUNCTION(int, pthread_create, 23 (pthread_t *__restrict th, 24 const pthread_attr_t *__restrict attr, 25 __pthread_start_t func, void *arg)) { 26 auto *thread = reinterpret_cast<__llvm_libc::Thread *>(th); 27 int result = thread->run(func, arg, nullptr, 0); 28 if (result != 0 && result != EPERM) 29 return EAGAIN; 30 return result; 31 } 32 33 } // namespace __llvm_libc 34