Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 1 | // Copyright 2014 the V8 project authors. All rights reserved. |
| 2 | // Use of this source code is governed by a BSD-style license that can be |
| 3 | // found in the LICENSE file. |
| 4 | |
| 5 | #include "src/base/sys-info.h" |
| 6 | |
| 7 | #if V8_OS_POSIX |
| 8 | #include <sys/resource.h> |
| 9 | #include <sys/stat.h> |
| 10 | #include <sys/time.h> |
| 11 | #include <sys/types.h> |
| 12 | #include <unistd.h> |
| 13 | #endif |
| 14 | |
| 15 | #if V8_OS_BSD |
| 16 | #include <sys/sysctl.h> |
| 17 | #endif |
| 18 | |
| 19 | #include <limits> |
| 20 | |
| 21 | #include "src/base/logging.h" |
| 22 | #include "src/base/macros.h" |
| 23 | #if V8_OS_WIN |
| 24 | #include "src/base/win32-headers.h" |
| 25 | #endif |
| 26 | |
| 27 | namespace v8 { |
| 28 | namespace base { |
| 29 | |
| 30 | // static |
| 31 | int SysInfo::NumberOfProcessors() { |
| 32 | #if V8_OS_OPENBSD |
| 33 | int mib[2] = {CTL_HW, HW_NCPU}; |
| 34 | int ncpu = 0; |
| 35 | size_t len = sizeof(ncpu); |
| 36 | if (sysctl(mib, arraysize(mib), &ncpu, &len, NULL, 0) != 0) { |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 37 | return 1; |
| 38 | } |
| 39 | return ncpu; |
| 40 | #elif V8_OS_POSIX |
| 41 | long result = sysconf(_SC_NPROCESSORS_ONLN); // NOLINT(runtime/int) |
| 42 | if (result == -1) { |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 43 | return 1; |
| 44 | } |
| 45 | return static_cast<int>(result); |
| 46 | #elif V8_OS_WIN |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 47 | SYSTEM_INFO system_info = {}; |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 48 | ::GetNativeSystemInfo(&system_info); |
| 49 | return static_cast<int>(system_info.dwNumberOfProcessors); |
| 50 | #endif |
| 51 | } |
| 52 | |
| 53 | |
| 54 | // static |
| 55 | int64_t SysInfo::AmountOfPhysicalMemory() { |
| 56 | #if V8_OS_MACOSX |
| 57 | int mib[2] = {CTL_HW, HW_MEMSIZE}; |
| 58 | int64_t memsize = 0; |
| 59 | size_t len = sizeof(memsize); |
| 60 | if (sysctl(mib, arraysize(mib), &memsize, &len, NULL, 0) != 0) { |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 61 | return 0; |
| 62 | } |
| 63 | return memsize; |
| 64 | #elif V8_OS_FREEBSD |
| 65 | int pages, page_size; |
| 66 | size_t size = sizeof(pages); |
| 67 | sysctlbyname("vm.stats.vm.v_page_count", &pages, &size, NULL, 0); |
| 68 | sysctlbyname("vm.stats.vm.v_page_size", &page_size, &size, NULL, 0); |
| 69 | if (pages == -1 || page_size == -1) { |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 70 | return 0; |
| 71 | } |
| 72 | return static_cast<int64_t>(pages) * page_size; |
| 73 | #elif V8_OS_CYGWIN || V8_OS_WIN |
| 74 | MEMORYSTATUSEX memory_info; |
| 75 | memory_info.dwLength = sizeof(memory_info); |
| 76 | if (!GlobalMemoryStatusEx(&memory_info)) { |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 77 | return 0; |
| 78 | } |
| 79 | int64_t result = static_cast<int64_t>(memory_info.ullTotalPhys); |
| 80 | if (result < 0) result = std::numeric_limits<int64_t>::max(); |
| 81 | return result; |
| 82 | #elif V8_OS_QNX |
| 83 | struct stat stat_buf; |
| 84 | if (stat("/proc", &stat_buf) != 0) { |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 85 | return 0; |
| 86 | } |
| 87 | return static_cast<int64_t>(stat_buf.st_size); |
| 88 | #elif V8_OS_NACL |
| 89 | // No support for _SC_PHYS_PAGES, assume 2GB. |
| 90 | return static_cast<int64_t>(1) << 31; |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 91 | #elif V8_OS_AIX |
| 92 | int64_t result = sysconf(_SC_AIX_REALMEM); |
| 93 | return static_cast<int64_t>(result) * 1024L; |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 94 | #elif V8_OS_POSIX |
| 95 | long pages = sysconf(_SC_PHYS_PAGES); // NOLINT(runtime/int) |
| 96 | long page_size = sysconf(_SC_PAGESIZE); // NOLINT(runtime/int) |
| 97 | if (pages == -1 || page_size == -1) { |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 98 | return 0; |
| 99 | } |
| 100 | return static_cast<int64_t>(pages) * page_size; |
| 101 | #endif |
| 102 | } |
| 103 | |
| 104 | |
| 105 | // static |
| 106 | int64_t SysInfo::AmountOfVirtualMemory() { |
| 107 | #if V8_OS_NACL || V8_OS_WIN |
| 108 | return 0; |
| 109 | #elif V8_OS_POSIX |
| 110 | struct rlimit rlim; |
| 111 | int result = getrlimit(RLIMIT_DATA, &rlim); |
| 112 | if (result != 0) { |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 113 | return 0; |
| 114 | } |
| 115 | return (rlim.rlim_cur == RLIM_INFINITY) ? 0 : rlim.rlim_cur; |
| 116 | #endif |
| 117 | } |
| 118 | |
| 119 | } // namespace base |
| 120 | } // namespace v8 |