// Copyright 2014 the V8 project 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 "src/base/sys-info.h" #if V8_OS_POSIX #include <sys/stat.h> #include <sys/time.h> #include <sys/types.h> #include <unistd.h> #if !V8_OS_FUCHSIA #include <sys/resource.h> #endif #endif #if V8_OS_BSD #include <sys/sysctl.h> #endif #include <limits> #include "src/base/logging.h" #include "src/base/macros.h" #if V8_OS_WIN #include "src/base/win32-headers.h" #endif namespace v8 { namespace base { // static int SysInfo::NumberOfProcessors() { #if V8_OS_OPENBSD int mib[2] = {CTL_HW, HW_NCPU}; int ncpu = 0; size_t len = sizeof(ncpu); if (sysctl(mib, arraysize(mib), &ncpu, &len, nullptr, 0) != 0) { return 1; } return ncpu; #elif V8_OS_POSIX long result = sysconf(_SC_NPROCESSORS_ONLN); // NOLINT(runtime/int) if (result == -1) { return 1; } return static_cast<int>(result); #elif V8_OS_WIN SYSTEM_INFO system_info = {}; ::GetNativeSystemInfo(&system_info); return static_cast<int>(system_info.dwNumberOfProcessors); #endif } // static int64_t SysInfo::AmountOfPhysicalMemory() { #if V8_OS_MACOSX int mib[2] = {CTL_HW, HW_MEMSIZE}; int64_t memsize = 0; size_t len = sizeof(memsize); if (sysctl(mib, arraysize(mib), &memsize, &len, nullptr, 0) != 0) { return 0; } return memsize; #elif V8_OS_FREEBSD int pages, page_size; size_t size = sizeof(pages); sysctlbyname("vm.stats.vm.v_page_count", &pages, &size, nullptr, 0); sysctlbyname("vm.stats.vm.v_page_size", &page_size, &size, nullptr, 0); if (pages == -1 || page_size == -1) { return 0; } return static_cast<int64_t>(pages) * page_size; #elif V8_OS_CYGWIN || V8_OS_WIN MEMORYSTATUSEX memory_info; memory_info.dwLength = sizeof(memory_info); if (!GlobalMemoryStatusEx(&memory_info)) { return 0; } int64_t result = static_cast<int64_t>(memory_info.ullTotalPhys); if (result < 0) result = std::numeric_limits<int64_t>::max(); return result; #elif V8_OS_QNX struct stat stat_buf; if (stat("/proc", &stat_buf) != 0) { return 0; } return static_cast<int64_t>(stat_buf.st_size); #elif V8_OS_AIX int64_t result = sysconf(_SC_AIX_REALMEM); return static_cast<int64_t>(result) * 1024L; #elif V8_OS_POSIX long pages = sysconf(_SC_PHYS_PAGES); // NOLINT(runtime/int) long page_size = sysconf(_SC_PAGESIZE); // NOLINT(runtime/int) if (pages == -1 || page_size == -1) { return 0; } return static_cast<int64_t>(pages) * page_size; #endif } // static int64_t SysInfo::AmountOfVirtualMemory() { #if V8_OS_WIN || V8_OS_FUCHSIA return 0; #elif V8_OS_POSIX struct rlimit rlim; int result = getrlimit(RLIMIT_DATA, &rlim); if (result != 0) { return 0; } return (rlim.rlim_cur == RLIM_INFINITY) ? 0 : rlim.rlim_cur; #endif } } // namespace base } // namespace v8