add osmo_use_count API
Provide a common implementation of use counting that supports naming each user
as well as counting more than just one use per user, depending on the rules the
caller implies.
In osmo-msc, we were originally using a simple int counter to see whether a
connection is still in use or should be discarded. For clarity, we later added
names to each user in the form of a bitmask of flags, to figure out exactly
which users are still active: for logging and to debug double get / double put
bugs. This however is still not adequate, since there may be more than one CM
Service Request pending. Also, it is a specialized implementation that is not
re-usable.
With this generalized implementation, we can:
- fix the problem of inadequate counting of multiple concurrent CM Service
Requests (more than one use count per user category),
- directly use arbitrary names for uses like __func__ or "foo" (no need to
define enums and value_string[]s),
- re-use the same code for e.g. vlr_subscr and get fairly detailed VLR
susbscriber usage logging for free.
Change-Id: Ife31e6798b4e728a23913179e346552a7dd338c0
diff --git a/tests/Makefile.am b/tests/Makefile.am
index 88bcd7e..d123ee2 100644
--- a/tests/Makefile.am
+++ b/tests/Makefile.am
@@ -31,6 +31,7 @@
tdef/tdef_vty_test_config_subnode \
tdef/tdef_vty_test_dynamic \
sockaddr_str/sockaddr_str_test \
+ use_count/use_count_test \
$(NULL)
if ENABLE_MSGFILE
@@ -240,6 +241,9 @@
sockaddr_str_sockaddr_str_test_SOURCES = sockaddr_str/sockaddr_str_test.c
sockaddr_str_sockaddr_str_test_LDADD = $(LDADD)
+use_count_use_count_test_SOURCES = use_count/use_count_test.c
+use_count_use_count_test_LDADD = $(LDADD)
+
# The `:;' works around a Bash 3.2 bug when the output is not writeable.
$(srcdir)/package.m4: $(top_srcdir)/configure.ac
:;{ \
@@ -309,6 +313,7 @@
tdef/tdef_vty_test_config_subnode.vty \
tdef/tdef_vty_test_dynamic.vty \
sockaddr_str/sockaddr_str_test.ok \
+ use_count/use_count_test.ok use_count/use_count_test.err \
$(NULL)
DISTCLEANFILES = atconfig atlocal conv/gsm0503_test_vectors.c