LICENSE

   1 Userspace RCU library licensing
   2 Mathieu Desnoyers
   3 September 3, 2012
   4
   5
   6 * LGPLv2.1
   7
   8 The library part is distributed under LGPLv2.1 or later. See
   9 LICENSES/LGPL-2.1-or-later.txt for license details. Refer to the individual
  10 file headers for details.
  11
  12 LGPL-compatible source code can statically use the library header using :
  13
  14 #define _LGPL_SOURCE
  15 #include <urcu.h>
  16
  17 Dynamic-only linking with the LGPL library is used if _LGPL_SOURCE is not
  18 defined. It permits relinking with newer versions of the library, which is
  19 required by the LGPL license.
  20
  21 See lgpl-relicensing.md for details.
  22
  23
  24 * Boehm-GC (MIT-style) license :
  25
  26 xchg() primitive has been rewritten from scratch starting from atomic_ops 1.2
  27 which has a MIT-style license that is intended to allow use in both free and
  28 proprietary software:
  29
  30         http://www.hpl.hp.com/research/linux/atomic_ops/LICENSING.txt
  31         http://www.hpl.hp.com/personal/Hans_Boehm/gc/gc_source/
  32
  33 This license applies to:
  34
  35 uatomic/gcc.h
  36 uatomic/unknown.h
  37 uatomic/generic.h
  38 uatomic/sparc64.h
  39 uatomic/arm.h
  40 uatomic/ppc.h
  41 uatomic/x86.h
  42 uatomic.h
  43
  44 MIT/X11 (BSD like) license apply to:
  45
  46 compiler.h
  47 arch/s390.h
  48 uatomic/alpha.h
  49 uatomic/mips.h
  50 uatomic/nios2.h
  51 uatomic/s390.h
  52 system.h
  53
  54
  55 * GPLv2
  56
  57 Library test code is distributed under the GPLv2 license. See
  58 LICENSES/GPL-2.0-only.txt for license details. See headers of individual files
  59 under tests/ for details.