MEDIUM: 51d: Enabled multi threaded operation in the 51Degrees module.
The existing threading flag in the 51Degrees API
(FIFTYONEDEGREES_NO_THREADING) has now been mapped to the HAProxy
threading flag (USE_THREAD), and the 51Degrees module code has been made
thread safe.
In Pattern, the cache is now locked with a spin lock from hathreads.h
using a new lable 'OTHER_LOCK'. The workset pool is now created with the
same size as the number of threads to avoid any time waiting on a
worket.
In Hash Trie, the global device offsets structure is only used in single
threaded operation. Multi threaded operation creates a new offsets
structure in each thread.
diff --git a/Makefile b/Makefile
index 10be7cc..e2c4d17 100644
--- a/Makefile
+++ b/Makefile
@@ -737,7 +737,13 @@
OPTIONS_OBJS += $(51DEGREES_LIB)/../cityhash/city.o
OPTIONS_OBJS += $(51DEGREES_LIB)/51Degrees.o
OPTIONS_OBJS += src/51d.o
-OPTIONS_CFLAGS += -DUSE_51DEGREES -DFIFTYONEDEGREES_NO_THREADING $(if $(51DEGREES_INC),-I$(51DEGREES_INC))
+OPTIONS_CFLAGS += -DUSE_51DEGREES $(if $(51DEGREES_INC),-I$(51DEGREES_INC))
+ifeq ($(USE_THREAD),)
+OPTIONS_CFLAGS += -DFIFTYONEDEGREES_NO_THREADING
+else
+OPTIONS_OBJS += $(51DEGREES_LIB)/../threading.o
+endif
+
BUILD_OPTIONS += $(call ignore_implicit,USE_51DEGREES)
OPTIONS_LDFLAGS += $(if $(51DEGREES_LIB),-L$(51DEGREES_LIB)) -lm
endif