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Added namespace ability to xxhash

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This commit is contained in:
Yann Collet 2015-06-27 12:43:28 -08:00
parent c04df7e1b5
commit 192ee724a3
3 changed files with 35 additions and 2 deletions
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2
lib/Makefile
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@ -40,7 +40,7 @@ LIBVER=$(LIBVER_MAJOR).$(LIBVER_MINOR).$(LIBVER_PATCH)
DESTDIR?= DESTDIR?=
PREFIX ?= /usr/local PREFIX ?= /usr/local
CFLAGS ?= -O3 CFLAGS ?= -O3
CFLAGS += -I. -std=c99 -Wall -Wextra -Wundef -Wshadow -Wcast-align -Wcast-qual -Wstrict-prototypes -pedantic CFLAGS += -I. -std=c99 -Wall -Wextra -Wundef -Wshadow -Wcast-align -Wcast-qual -Wstrict-prototypes -pedantic -DXXH_NAMESPACE=LZ4_
LIBDIR?= $(PREFIX)/lib LIBDIR?= $(PREFIX)/lib
INCLUDEDIR=$(PREFIX)/include INCLUDEDIR=$(PREFIX)/include

2
lib/lz4.h
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@ -49,7 +49,7 @@ extern "C" {
**************************************/ **************************************/
#define LZ4_VERSION_MAJOR 1 /* for breaking interface changes */ #define LZ4_VERSION_MAJOR 1 /* for breaking interface changes */
#define LZ4_VERSION_MINOR 7 /* for new (non-breaking) interface capabilities */ #define LZ4_VERSION_MINOR 7 /* for new (non-breaking) interface capabilities */
#define LZ4_VERSION_RELEASE 0 /* for tweaks, bug-fixes, or development */ #define LZ4_VERSION_RELEASE 1 /* for tweaks, bug-fixes, or development */
#define LZ4_VERSION_NUMBER (LZ4_VERSION_MAJOR *100*100 + LZ4_VERSION_MINOR *100 + LZ4_VERSION_RELEASE) #define LZ4_VERSION_NUMBER (LZ4_VERSION_MAJOR *100*100 + LZ4_VERSION_MINOR *100 + LZ4_VERSION_RELEASE)
int LZ4_versionNumber (void); int LZ4_versionNumber (void);

33
lib/xxhash.h
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@ -78,6 +78,39 @@ extern "C" {
typedef enum { XXH_OK=0, XXH_ERROR } XXH_errorcode; typedef enum { XXH_OK=0, XXH_ERROR } XXH_errorcode;
/*****************************
* Namespace Emulation
*****************************/
/* Motivations :
If you need to include xxHash into your library,
but wish to avoid xxHash symbols to be present on your library interface
in an effort to avoid potential name collision if another library also includes xxHash,
you can use XXH_NAMESPACE, which will automatically prefix any symbol from xxHash
with the value of XXH_NAMESPACE (so avoid to keep it NULL, and avoid numeric values).
Note that no change is required within the calling program :
it can still call xxHash functions using their regular name.
They will be automatically translated by this header.
*/
#ifdef XXH_NAMESPACE
# define XXH_CAT(A,B) A##B
# define XXH_NAME2(A,B) XXH_CAT(A,B)
# define XXH32 XXH_NAME2(XXH_NAMESPACE, XXH32)
# define XXH64 XXH_NAME2(XXH_NAMESPACE, XXH64)
# define XXH32_createState XXH_NAME2(XXH_NAMESPACE, XXH32_createState)
# define XXH64_createState XXH_NAME2(XXH_NAMESPACE, XXH64_createState)
# define XXH32_freeState XXH_NAME2(XXH_NAMESPACE, XXH32_freeState)
# define XXH64_freeState XXH_NAME2(XXH_NAMESPACE, XXH64_freeState)
# define XXH32_reset XXH_NAME2(XXH_NAMESPACE, XXH32_reset)
# define XXH64_reset XXH_NAME2(XXH_NAMESPACE, XXH64_reset)
# define XXH32_update XXH_NAME2(XXH_NAMESPACE, XXH32_update)
# define XXH64_update XXH_NAME2(XXH_NAMESPACE, XXH64_update)
# define XXH32_digest XXH_NAME2(XXH_NAMESPACE, XXH32_digest)
# define XXH64_digest XXH_NAME2(XXH_NAMESPACE, XXH64_digest)
#endif
/***************************** /*****************************
* Simple Hash Functions * Simple Hash Functions