1 /*
2  * Copyright (C) 2018 The Android Open Source Project
3  *
4  * Licensed under the Apache License, Version 2.0 (the "License");
5  * you may not use this file except in compliance with the License.
6  * You may obtain a copy of the License at
7  *
8  *      http://www.apache.org/licenses/LICENSE-2.0
9  *
10  * Unless required by applicable law or agreed to in writing, software
11  * distributed under the License is distributed on an "AS IS" BASIS,
12  * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
13  * See the License for the specific language governing permissions and
14  * limitations under the License.
15  */
16 
17 #include "functor_utils.h"
18 
19 #include <errno.h>
20 #include <string.h>
21 #include <sys/resource.h>
22 #include <utils/Log.h>
23 
24 namespace android {
25 
RaiseFileNumberLimit()26 void RaiseFileNumberLimit() {
27   static bool have_raised_limit = false;
28   if (have_raised_limit)
29     return;
30 
31   have_raised_limit = true;
32   struct rlimit limit_struct;
33   limit_struct.rlim_cur = 0;
34   limit_struct.rlim_max = 0;
35   if (getrlimit(RLIMIT_NOFILE, &limit_struct) == 0) {
36     limit_struct.rlim_cur = limit_struct.rlim_max;
37     if (setrlimit(RLIMIT_NOFILE, &limit_struct) != 0) {
38       ALOGE("setrlimit failed: %s", strerror(errno));
39     }
40   } else {
41     ALOGE("getrlimit failed: %s", strerror(errno));
42   }
43 }
44 
45 }  // namespace android
46