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- // 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/sysctl.h>
- #include "base/notreached.h"
- namespace base {
- int64_t SysInfo::AmountOfPhysicalMemoryImpl() {
- int pages, page_size;
- size_t size = sizeof(pages);
- sysctlbyname("vm.stats.vm.v_page_count", &pages, &size, NULL, 0);
- sysctlbyname("vm.stats.vm.v_page_size", &page_size, &size, NULL, 0);
- if (pages == -1 || page_size == -1) {
- NOTREACHED();
- return 0;
- }
- return static_cast<int64_t>(pages) * page_size;
- }
- // static
- uint64_t SysInfo::MaxSharedMemorySize() {
- size_t limit;
- size_t size = sizeof(limit);
- if (sysctlbyname("kern.ipc.shmmax", &limit, &size, NULL, 0) < 0) {
- NOTREACHED();
- return 0;
- }
- return static_cast<uint64_t>(limit);
- }
- } // namespace base
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