Mercurial > jdk8-mips64-public > hotspot / changeset

     1.1 --- a/src/os/linux/vm/os_linux.cpp	Sat Sep 17 03:44:08 2016 -0400
     1.2 +++ b/src/os/linux/vm/os_linux.cpp	Sun Sep 18 13:43:10 2016 +0800
     1.3 @@ -4985,10 +4985,40 @@
     1.4    }
     1.5  };
     1.6  
     1.7 +#ifdef MIPS64
     1.8 +/* 2016/9/18 Jin 
     1.9 + * Refer to:  libnuma_init() */
    1.10 +int get_available_cpus() {
    1.11 +  typedef int (*numa_num_task_cpus_t)(void);
    1.12 +  static numa_num_task_cpus_t _numa_num_task_cpus;
    1.13 +
    1.14 +  void *handle = dlopen("libnuma.so.1", RTLD_LAZY);
    1.15 +
    1.16 +  if (handle == NULL)
    1.17 +    return sysconf(_SC_NPROCESSORS_ONLN);
    1.18 +
    1.19 +  _numa_num_task_cpus = CAST_FROM_FN_PTR(numa_num_task_cpus_t, dlsym(handle, "numa_num_task_cpus"));
    1.20 +
    1.21 +  if (_numa_num_task_cpus == NULL) {
    1.22 +    dlclose(handle);
    1.23 +    return sysconf(_SC_NPROCESSORS_ONLN);
    1.24 +  }
    1.25 +
    1.26 +  int ret = _numa_num_task_cpus();
    1.27 +  dlclose(handle);
    1.28 +  return ret;
    1.29 +}
    1.30 +#endif
    1.31 +
    1.32  int os::active_processor_count() {
    1.33    // Linux doesn't yet have a (official) notion of processor sets,
    1.34    // so just return the number of online processors.
    1.35 +#ifdef MIPS64
    1.36 +  int online_cpus = get_available_cpus();
    1.37 +#else
    1.38    int online_cpus = ::sysconf(_SC_NPROCESSORS_ONLN);
    1.39 +#endif
    1.40 +
    1.41    assert(online_cpus > 0 && online_cpus <= processor_count(), "sanity check");
    1.42    return online_cpus;
    1.43  }