Function MallocHook_SetPreSbrkHook

BeefRT/gperftools/src/malloc_hook.cc:491–494

extern "C"
MallocHook_PreSbrkHook MallocHook_SetPreSbrkHook(MallocHook_PreSbrkHook hook) {
  RAW_VLOG(10, "SetPreSbrkHook(%p)", hook);
  return presbrk_hook_.Exchange(hook);
}

extern "C"
MallocHook_SbrkHook MallocHook_SetSbrkHook(MallocHook_SbrkHook hook) {