PROTON-700 : small performance improvement from inlining pn_data_node(). This is a very popular function. improvement on newer box was 6% , on older box 2.6% t-test after 50 reps before & after says odd of the 2.6% figure happening by chance is 2.0e-18 .
qpid/proton/trunk/proton-c/src/codec/codec.c
qpid/proton/trunk/proton-c/src/codec/data.h