[sr-dev] git:andrei/counters: core: counters / statistics support

Module: sip-router Branch: andrei/counters Commit: 4208dc00cf245559ed3152beace6084c7c6c4571 URL: http://git.sip-router.org/cgi-bin/gitweb.cgi/sip-router/?a=commit;h=4208dc0… Author: Andrei Pelinescu-Onciul <andrei(a)iptel.org> Committer: Andrei Pelinescu-Onciul <andrei(a)iptel.org> Date: Sun Aug 8 18:41:30 2010 +0200 core: counters / statistics support Efficient counters support (api). Incrementing or adding a value to a defined counter is extremely fast at the cost of slower reading (each process has its own set of counters => no cacheline ping-pong and no expensive atomic operations). All counters must be defined before forking (in a module this means from mod_init() or init_child(rank==PROC_INIT)). A counter is uniquely identified by its group and its name (and not only by its name like in kamailio stats). Example (error checking skipped): /* before forking, e.g. mod_init() */ counter_handle_t h; /* declare the counter my_grp.foo */ counter_register(&h, "my_grp", "foo", 0, 0, 0, 0); /* after forking */ counter_inc(h); /* getting a counter value, knowing its group and name*/ counter_lookup(&h, "my_grp", "foo"); val = counter_get(h); --- counters.c | 696 ++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++ counters.h | 124 +++++++++++ main.c | 10 +- 3 files changed, 828 insertions(+), 2 deletions(-) Diff: http://git.sip-router.org/cgi-bin/gitweb.cgi/sip-router/?a=commitdiff;h=420…