Fix undefined NULL pointer arithmetic
[urcu.git] / tests / common / thread-id.h
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1#ifndef _TEST_THREAD_ID_H
2#define _TEST_THREAD_ID_H
3
4/*
5 * thread-id.h
6 *
7 * Userspace RCU library - thread ID
8 *
9 * Copyright 2013 - Mathieu Desnoyers <mathieu.desnoyers@polymtl.ca>
10 *
11 * THIS MATERIAL IS PROVIDED AS IS, WITH ABSOLUTELY NO WARRANTY EXPRESSED
12 * OR IMPLIED. ANY USE IS AT YOUR OWN RISK.
13 *
14 * Permission is hereby granted to use or copy this program
15 * for any purpose, provided the above notices are retained on all copies.
16 * Permission to modify the code and to distribute modified code is granted,
17 * provided the above notices are retained, and a notice that the code was
18 * modified is included with the above copyright notice.
19 */
550265b2 20#ifdef __linux__
9ba261bd 21# include <urcu/syscall-compat.h>
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22
23# if defined(_syscall0)
24_syscall0(pid_t, gettid)
25# elif defined(__NR_gettid)
26static inline pid_t gettid(void)
27{
28 return syscall(__NR_gettid);
29}
30# endif
31
32static inline
33unsigned long urcu_get_thread_id(void)
34{
35 return (unsigned long) gettid();
36}
37#elif defined(__FreeBSD__)
38# include <pthread_np.h>
39
40static inline
41unsigned long urcu_get_thread_id(void)
42{
43 return (unsigned long) pthread_getthreadid_np();
44}
bd23adba
CB
45#elif defined(__Android__)
46/*
47 * Do not redefine gettid() as it is already included
48 * in bionic through <unistd.h>.
49 */
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50#else
51# warning "use pid as thread ID"
52static inline
53unsigned long urcu_get_thread_id(void)
54{
55 return (unsigned long) getpid();
56}
57#endif
58
59#endif /* _TEST_THREAD_ID_H */
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