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// Copyright (c) 2009 The Chromium Authors. All rights reserved.
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
#include "base/sys_info.h"
#include "base/file_util.h"
#include "base/logging.h"
namespace base {
int64 SysInfo::AmountOfPhysicalMemory() {
long pages = sysconf(_SC_PHYS_PAGES);
long page_size = sysconf(_SC_PAGE_SIZE);
if (pages == -1 || page_size == -1) {
NOTREACHED();
return 0;
}
return static_cast<int64>(pages) * page_size;
}
// static
size_t SysInfo::MaxSharedMemorySize() {
static size_t limit;
static bool limit_valid = false;
if (!limit_valid) {
std::string contents;
file_util::ReadFileToString(FilePath("/proc/sys/kernel/shmmax"), &contents);
limit = strtoul(contents.c_str(), NULL, 0);
limit_valid = true;
}
return limit;
}
} // namespace base
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