[urcu.git] / LICENSE

Userspace RCU library licensing
Mathieu Desnoyers
September 3, 2012


* LGPLv2.1

The library part is distributed under LGPLv2.1 or later. See
LICENSES/LGPL-2.1-or-later.txt for license details. Refer to the individual
file headers for details.

LGPL-compatible source code can statically use the library header using :

#define _LGPL_SOURCE
#include <urcu.h>

Dynamic-only linking with the LGPL library is used if _LGPL_SOURCE is not
defined. It permits relinking with newer versions of the library, which is
required by the LGPL license.

See lgpl-relicensing.md for details.


* Boehm-GC (MIT-style) license :

xchg() primitive has been rewritten from scratch starting from atomic_ops 1.2
which has a MIT-style license that is intended to allow use in both free and
proprietary software:

	http://www.hpl.hp.com/research/linux/atomic_ops/LICENSING.txt
	http://www.hpl.hp.com/personal/Hans_Boehm/gc/gc_source/

This license applies to:

uatomic/gcc.h
uatomic/unknown.h
uatomic/generic.h
uatomic/sparc64.h
uatomic/arm.h
uatomic/ppc.h
uatomic/x86.h
uatomic.h

MIT/X11 (BSD like) license apply to:

compiler.h
arch/s390.h
uatomic/alpha.h
uatomic/mips.h
uatomic/nios2.h
uatomic/s390.h
system.h


* GPLv2

Library test code is distributed under the GPLv2 license. See
LICENSES/GPL-2.0-only.txt for license details. See headers of individual files
under tests/ for details.
Commit	Line	Data
	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.