in src/c/perf-map-agent.c [205:212]
jvmtiError set_callbacks(jvmtiEnv *jvmti) {
jvmtiEventCallbacks callbacks;
memset(&callbacks, 0, sizeof(callbacks));
callbacks.CompiledMethodLoad = &cbCompiledMethodLoad;
callbacks.DynamicCodeGenerated = &cbDynamicCodeGenerated;
return (*jvmti)->SetEventCallbacks(jvmti, &callbacks, (jint)sizeof(callbacks));
}