memfence          111 dmtcpplugin.cpp   memfence(); //make sure the reads above don't get reordered
memfence          120 dmtcpplugin.cpp       memfence();  //make sure the loop condition doesn't get optimized
memfence          387 mtcp/mtcp_restart.c   memfence();
memfence          405 mtcp/mtcp_restart.c   memfence();