1 /* 2 * kmp_wrapper_getpid.h -- getpid() declaration. 3 */ 4 5 //===----------------------------------------------------------------------===// 6 // 7 // Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions. 8 // See https://llvm.org/LICENSE.txt for license information. 9 // SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception 10 // 11 //===----------------------------------------------------------------------===// 12 13 #ifndef KMP_WRAPPER_GETPID_H 14 #define KMP_WRAPPER_GETPID_H 15 16 #if KMP_OS_UNIX 17 18 // On Unix-like systems (Linux* OS and OS X*) getpid() is declared in standard 19 // headers. 20 #include <sys/syscall.h> 21 #include <sys/types.h> 22 #include <unistd.h> 23 #if KMP_OS_DARWIN 24 // OS X 25 #define __kmp_gettid() pthread_mach_thread_np(pthread_self()) 26 #elif KMP_OS_FREEBSD 27 #include <pthread_np.h> 28 #define __kmp_gettid() pthread_getthreadid_np() 29 #elif KMP_OS_NETBSD 30 #include <lwp.h> 31 #define __kmp_gettid() _lwp_self() 32 #elif KMP_OS_OPENBSD 33 #define __kmp_gettid() syscall(SYS_getthrid) 34 #elif defined(SYS_gettid) 35 // Hopefully other Unix systems define SYS_gettid syscall for getting os thread 36 // id 37 #define __kmp_gettid() syscall(SYS_gettid) 38 #else 39 #warning No gettid found, use getpid instead 40 #define __kmp_gettid() getpid() 41 #endif 42 43 #elif KMP_OS_WINDOWS 44 45 // On Windows* OS _getpid() returns int (not pid_t) and is declared in 46 // "process.h". 47 #include <process.h> 48 // Let us simulate Unix. 49 #if KMP_MSVC_COMPAT 50 typedef int pid_t; 51 #endif 52 #define getpid _getpid 53 #define __kmp_gettid() GetCurrentThreadId() 54 55 #else 56 57 #error Unknown or unsupported OS. 58 59 #endif 60 61 /* TODO: All the libomp source code uses pid_t type for storing the result of 62 getpid(), it is good. But often it printed as "%d", that is not good, because 63 it ignores pid_t definition (may pid_t be longer that int?). It seems all pid 64 prints should be rewritten as: 65 66 printf( "%" KMP_UINT64_SPEC, (kmp_uint64) pid ); 67 68 or (at least) as 69 70 printf( "%" KMP_UINT32_SPEC, (kmp_uint32) pid ); 71 72 (kmp_uint32, kmp_uint64, KMP_UINT64_SPEC, and KMP_UNIT32_SPEC are defined in 73 "kmp_os.h".) */ 74 75 #endif // KMP_WRAPPER_GETPID_H 76 77 // end of file // 78