2 * kmp_wrapper_getpid.h -- getpid() declaration.
5 //===----------------------------------------------------------------------===//
7 // The LLVM Compiler Infrastructure
9 // This file is dual licensed under the MIT and the University of Illinois Open
10 // Source Licenses. See LICENSE.txt for details.
12 //===----------------------------------------------------------------------===//
14 #ifndef KMP_WRAPPER_GETPID_H
15 #define KMP_WRAPPER_GETPID_H
19 // On Unix-like systems (Linux* OS and OS X*) getpid() is declared in standard
21 #include <sys/syscall.h>
22 #include <sys/types.h>
26 #define __kmp_gettid() syscall(SYS_thread_selfid)
28 #include <pthread_np.h>
29 #define __kmp_gettid() pthread_getthreadid_np()
32 #define __kmp_gettid() _lwp_self()
33 #elif defined(SYS_gettid)
34 // Hopefully other Unix systems define SYS_gettid syscall for getting os thread
36 #define __kmp_gettid() syscall(SYS_gettid)
38 #warning No gettid found, use getpid instead
39 #define __kmp_gettid() getpid()
44 // On Windows* OS _getpid() returns int (not pid_t) and is declared in
47 // Let us simulate Unix.
51 #define getpid _getpid
52 #define __kmp_gettid() GetCurrentThreadId()
56 #error Unknown or unsupported OS.
60 /* TODO: All the libomp source code uses pid_t type for storing the result of
61 getpid(), it is good. But often it printed as "%d", that is not good, because
62 it ignores pid_t definition (may pid_t be longer that int?). It seems all pid
63 prints should be rewritten as:
65 printf( "%" KMP_UINT64_SPEC, (kmp_uint64) pid );
69 printf( "%" KMP_UINT32_SPEC, (kmp_uint32) pid );
71 (kmp_uint32, kmp_uint64, KMP_UINT64_SPEC, and KMP_UNIT32_SPEC are defined in
74 #endif // KMP_WRAPPER_GETPID_H