tests/common/thread-id.h

   1 // SPDX-FileCopyrightText: 2013 Mathieu Desnoyers <mathieu.desnoyers@efficios.com>
   2 //
   3 // SPDX-License-Identifier: LicenseRef-Boehm-GC
   4
   5 #ifndef _TEST_THREAD_ID_H
   6 #define _TEST_THREAD_ID_H
   7
   8 /*
   9  * Userspace RCU library - thread ID
  10  */
  11
  12 #ifdef __linux__
  13 # include <urcu/syscall-compat.h>
  14
  15 # if defined(HAVE_GETTID)
  16 /*
  17  * Do not redefine gettid() as it is already included
  18  * in bionic through <unistd.h>. Some other libc
  19  * may also already contain an implementation of gettid.
  20  */
  21 # elif defined(_syscall0)
  22 _syscall0(pid_t, gettid)
  23 # elif defined(__NR_gettid)
  24 static inline pid_t gettid(void)
  25 {
  26         return syscall(__NR_gettid);
  27 }
  28 # endif
  29
  30 static inline
  31 unsigned long urcu_get_thread_id(void)
  32 {
  33         return (unsigned long) gettid();
  34 }
  35 #elif defined(__FreeBSD__)
  36 # include <pthread_np.h>
  37
  38 static inline
  39 unsigned long urcu_get_thread_id(void)
  40 {
  41         return (unsigned long) pthread_getthreadid_np();
  42 }
  43 #elif defined(__sun__) || defined(__APPLE__)
  44 #include <pthread.h>
  45
  46 static inline
  47 unsigned long urcu_get_thread_id(void)
  48 {
  49         return (unsigned long) pthread_self();
  50 }
  51 #elif defined(__CYGWIN__)
  52 #include <pthread.h>
  53
  54 extern unsigned long pthread_getsequence_np(pthread_t *);
  55
  56 static inline
  57 unsigned long urcu_get_thread_id(void)
  58 {
  59         pthread_t thr = pthread_self();
  60         return pthread_getsequence_np(&thr);
  61 }
  62 #elif defined(__OpenBSD__)
  63 #include <unistd.h>
  64
  65 static inline
  66 unsigned long urcu_get_thread_id(void)
  67 {
  68         return (unsigned long) getthrid();
  69 }
  70 #else
  71 # warning "use pid as thread ID"
  72 static inline
  73 unsigned long urcu_get_thread_id(void)
  74 {
  75         return (unsigned long) getpid();
  76 }
  77 #endif
  78
  79 #endif /* _TEST_THREAD_ID_H */