2 * kmp_wrapper_getpid.h -- getpid() declaration.
5 //===----------------------------------------------------------------------===//
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
11 //===----------------------------------------------------------------------===//
13 #ifndef KMP_WRAPPER_GETPID_H
14 #define KMP_WRAPPER_GETPID_H
18 // On Unix-like systems (Linux* OS and OS X*) getpid() is declared in standard
20 #include <sys/syscall.h>
21 #include <sys/types.h>
25 #define __kmp_gettid() syscall(SYS_thread_selfid)
27 #include <pthread_np.h>
28 #define __kmp_gettid() pthread_getthreadid_np()
31 #define __kmp_gettid() _lwp_self()
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
37 #define __kmp_gettid() syscall(SYS_gettid)
39 #warning No gettid found, use getpid instead
40 #define __kmp_gettid() getpid()
45 // On Windows* OS _getpid() returns int (not pid_t) and is declared in
48 // Let us simulate Unix.
52 #define getpid _getpid
53 #define __kmp_gettid() GetCurrentThreadId()
57 #error Unknown or unsupported OS.
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:
66 printf( "%" KMP_UINT64_SPEC, (kmp_uint64) pid );
70 printf( "%" KMP_UINT32_SPEC, (kmp_uint32) pid );
72 (kmp_uint32, kmp_uint64, KMP_UINT64_SPEC, and KMP_UNIT32_SPEC are defined in
75 #endif // KMP_WRAPPER_GETPID_H