MAP_FIXED        1553 gc/os_dep.c    #   define GC_MMAP_FLAGS MAP_FIXED | MAP_PRIVATE
MAP_FIXED        1862 gc/os_dep.c    		      MAP_PRIVATE | MAP_FIXED | OPT_MAP_ANON,
MAP_FIXED         507 gc/solaris_threads.c     mmap(stack, size, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_NORESERVE|MAP_FIXED,