tests/common/thread-id.h

   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  */
  20
  21 #ifdef __linux__
  22 # include <syscall.h>
  23
  24 # if defined(_syscall0)
  25 _syscall0(pid_t, gettid)
  26 # elif defined(__NR_gettid)
  27 static inline pid_t gettid(void)
  28 {
  29         return syscall(__NR_gettid);
  30 }
  31 # endif
  32
  33 static inline
  34 unsigned long urcu_get_thread_id(void)
  35 {
  36         return (unsigned long) gettid();
  37 }
  38 #elif defined(__FreeBSD__)
  39 # include <pthread_np.h>
  40
  41 static inline
  42 unsigned long urcu_get_thread_id(void)
  43 {
  44         return (unsigned long) pthread_getthreadid_np();
  45 }
  46 #elif defined(__sun__) || defined(__APPLE__)
  47 #include <pthread.h>
  48
  49 static inline
  50 unsigned long urcu_get_thread_id(void)
  51 {
  52         return (unsigned long) pthread_self();
  53 }
  54 #elif defined(__CYGWIN__)
  55 #include <pthread.h>
  56
  57 extern unsigned long pthread_getsequence_np(pthread_t *);
  58
  59 static inline
  60 unsigned long urcu_get_thread_id(void)
  61 {
  62         pthread_t thr = pthread_self();
  63         return pthread_getsequence_np(&thr);
  64 }
  65
  66 #else
  67 # warning "use pid as thread ID"
  68 static inline
  69 unsigned long urcu_get_thread_id(void)
  70 {
  71         return (unsigned long) getpid();
  72 }
  73 #endif
  74
  75 #endif /* _TEST_THREAD_ID_H */