include/lttng/ust-tid.h

   1 #ifndef _LTTNG_UST_TID_H
   2 #define _LTTNG_UST_TID_H
   3
   4 /*
   5  * lttng/ust-tid.h
   6  *
   7  * Copyright 2012 (c) - Mathieu Desnoyers <mathieu.desnoyers@efficios.com>
   8  *
   9  * gettid compatibility layer.
  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 #endif
  24
  25 #if defined(_syscall0)
  26 _syscall0(pid_t, gettid)
  27 #elif defined(__NR_gettid)
  28 #include <unistd.h>
  29 static inline pid_t gettid(void)
  30 {
  31         return syscall(__NR_gettid);
  32 }
  33 #else
  34 #include <sys/types.h>
  35 #include <unistd.h>
  36
  37 #warning "use pid as tid"
  38 static inline pid_t gettid(void)
  39 {
  40         return getpid();
  41 }
  42 #endif
  43
  44 #endif /* _LTTNG_UST_TID_H */