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 #if !defined(KMP_OS_AIX) 21 #include <sys/syscall.h> 22 #endif 23 #include <sys/types.h> 24 #include <unistd.h> 25 #if KMP_OS_DARWIN 26 // OS X 27 #define __kmp_gettid() pthread_mach_thread_np(pthread_self()) 28 #elif KMP_OS_FREEBSD || KMP_OS_DRAGONFLY 29 #include <pthread_np.h> 30 #define __kmp_gettid() pthread_getthreadid_np() 31 #elif KMP_OS_NETBSD 32 #include <lwp.h> 33 #define __kmp_gettid() _lwp_self() 34 #elif KMP_OS_OPENBSD 35 #define __kmp_gettid() getthrid() 36 #elif KMP_OS_AIX 37 #include <pthread.h> 38 #define __kmp_gettid() pthread_self() 39 #elif defined(SYS_gettid) 40 // Hopefully other Unix systems define SYS_gettid syscall for getting os thread 41 // id 42 #define __kmp_gettid() syscall(SYS_gettid) 43 #else 44 #warning No gettid found, use getpid instead 45 #define __kmp_gettid() getpid() 46 #endif 47 48 #elif KMP_OS_WINDOWS 49 50 // On Windows* OS _getpid() returns int (not pid_t) and is declared in 51 // "process.h". 52 #include <process.h> 53 // Let us simulate Unix. 54 #if KMP_MSVC_COMPAT 55 typedef int pid_t; 56 #endif 57 #define getpid _getpid 58 #define __kmp_gettid() GetCurrentThreadId() 59 60 #else 61 62 #error Unknown or unsupported OS. 63 64 #endif 65 66 /* TODO: All the libomp source code uses pid_t type for storing the result of 67 getpid(), it is good. But often it printed as "%d", that is not good, because 68 it ignores pid_t definition (may pid_t be longer that int?). It seems all pid 69 prints should be rewritten as: 70 71 printf( "%" KMP_UINT64_SPEC, (kmp_uint64) pid ); 72 73 or (at least) as 74 75 printf( "%" KMP_UINT32_SPEC, (kmp_uint32) pid ); 76 77 (kmp_uint32, kmp_uint64, KMP_UINT64_SPEC, and KMP_UNIT32_SPEC are defined in 78 "kmp_os.h".) */ 79 80 #endif // KMP_WRAPPER_GETPID_H 81 82 // end of file // 83