Apache Mesos
pagesize.hpp
Go to the documentation of this file.
1 // Licensed under the Apache License, Version 2.0 (the "License");
2 // you may not use this file except in compliance with the License.
3 // You may obtain a copy of the License at
4 //
5 // http://www.apache.org/licenses/LICENSE-2.0
6 //
7 // Unless required by applicable law or agreed to in writing, software
8 // distributed under the License is distributed on an "AS IS" BASIS,
9 // WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
10 // See the License for the specific language governing permissions and
11 // limitations under the License.
12 
13 #ifndef __STOUT_OS_POSIX_PAGESIZE_HPP__
14 #define __STOUT_OS_POSIX_PAGESIZE_HPP__
15 
16 #include <unistd.h>
17 
18 #include <glog/logging.h>
19 
20 
21 namespace os {
22 
23 // The alternative `getpagesize()` is not defined by POSIX.
24 inline size_t pagesize()
25 {
26  // We assume that `sysconf` will not fail in practice.
27  long result = ::sysconf(_SC_PAGESIZE);
28  CHECK(result >= 0);
29  return result;
30 }
31 
32 } // namespace os {
33 
34 #endif // __STOUT_OS_POSIX_PAGESIZE_HPP__
size_t pagesize()
Definition: pagesize.hpp:24