81 lines
1.8 KiB
C++
81 lines
1.8 KiB
C++
|
// Copyright (c) 2011 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/system/sys_info.h"
|
||
|
|
|
||
|
|
#include <stddef.h>
|
||
|
|
#include <stdint.h>
|
||
|
|
#include <sys/param.h>
|
||
|
|
#include <sys/shm.h>
|
||
|
|
#include <sys/sysctl.h>
|
||
|
|
|
||
|
|
#include "base/logging.h"
|
||
|
|
#include "base/stl_util.h"
|
||
|
|
|
||
|
|
namespace {
|
||
|
|
|
||
|
|
int64_t AmountOfMemory(int pages_name) {
|
||
|
|
long pages = sysconf(pages_name);
|
||
|
|
long page_size = sysconf(_SC_PAGESIZE);
|
||
|
|
if (pages == -1 || page_size == -1) {
|
||
|
|
NOTREACHED();
|
||
|
|
return 0;
|
||
|
|
}
|
||
|
|
return static_cast<int64_t>(pages) * page_size;
|
||
|
|
}
|
||
|
|
|
||
|
|
} // namespace
|
||
|
|
|
||
|
|
namespace base {
|
||
|
|
|
||
|
|
// static
|
||
|
|
int SysInfo::NumberOfProcessors() {
|
||
|
|
int mib[] = {CTL_HW, HW_NCPU};
|
||
|
|
int ncpu;
|
||
|
|
size_t size = sizeof(ncpu);
|
||
|
|
if (sysctl(mib, base::size(mib), &ncpu, &size, NULL, 0) < 0) {
|
||
|
|
NOTREACHED();
|
||
|
|
return 1;
|
||
|
|
}
|
||
|
|
return ncpu;
|
||
|
|
}
|
||
|
|
|
||
|
|
// static
|
||
|
|
int64_t SysInfo::AmountOfPhysicalMemoryImpl() {
|
||
|
|
return AmountOfMemory(_SC_PHYS_PAGES);
|
||
|
|
}
|
||
|
|
|
||
|
|
// static
|
||
|
|
int64_t SysInfo::AmountOfAvailablePhysicalMemoryImpl() {
|
||
|
|
// We should add inactive file-backed memory also but there is no such
|
||
|
|
// information from OpenBSD unfortunately.
|
||
|
|
return AmountOfMemory(_SC_AVPHYS_PAGES);
|
||
|
|
}
|
||
|
|
|
||
|
|
// static
|
||
|
|
uint64_t SysInfo::MaxSharedMemorySize() {
|
||
|
|
int mib[] = {CTL_KERN, KERN_SHMINFO, KERN_SHMINFO_SHMMAX};
|
||
|
|
size_t limit;
|
||
|
|
size_t size = sizeof(limit);
|
||
|
|
if (sysctl(mib, base::size(mib), &limit, &size, NULL, 0) < 0) {
|
||
|
|
NOTREACHED();
|
||
|
|
return 0;
|
||
|
|
}
|
||
|
|
return static_cast<uint64_t>(limit);
|
||
|
|
}
|
||
|
|
|
||
|
|
// static
|
||
|
|
std::string SysInfo::CPUModelName() {
|
||
|
|
int mib[] = {CTL_HW, HW_MODEL};
|
||
|
|
char name[256];
|
||
|
|
size_t len = base::size(name);
|
||
|
|
if (sysctl(mib, base::size(mib), name, &len, NULL, 0) < 0) {
|
||
|
|
NOTREACHED();
|
||
|
|
return std::string();
|
||
|
|
}
|
||
|
|
return name;
|
||
|
|
}
|
||
|
|
|
||
|
|
} // namespace base
|