| /* |
| * Copyright (c) 2011 The WebRTC 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 in the root of the source |
| * tree. An additional intellectual property rights grant can be found |
| * in the file PATENTS. All contributing project authors may |
| * be found in the AUTHORS file in the root of the source tree. |
| */ |
| |
| #include "cpu_info.h" |
| |
| #if defined(_WIN32) |
| #include <Windows.h> |
| #elif defined(WEBRTC_MAC) |
| #include <sys/types.h> |
| #include <sys/sysctl.h> |
| #elif defined(WEBRTC_MAC_INTEL) |
| // Intentionally empty |
| #elif defined(WEBRTC_ANDROID) |
| // Not implemented yet, might be possible to use Linux implementation |
| #else // defined(WEBRTC_LINUX) |
| #include <sys/sysinfo.h> |
| #include <unistd.h> |
| #endif |
| |
| #include "trace.h" |
| |
| namespace webrtc { |
| |
| WebRtc_UWord32 CpuInfo::_numberOfCores = 0; |
| |
| WebRtc_UWord32 CpuInfo::DetectNumberOfCores() |
| { |
| if (!_numberOfCores) |
| { |
| #if defined(_WIN32) |
| SYSTEM_INFO si; |
| GetSystemInfo(&si); |
| _numberOfCores = static_cast<WebRtc_UWord32>(si.dwNumberOfProcessors); |
| WEBRTC_TRACE(kTraceStateInfo, kTraceUtility, -1, |
| "Available number of cores:%d", _numberOfCores); |
| |
| #elif defined(WEBRTC_LINUX) && !defined(WEBRTC_ANDROID) |
| _numberOfCores = get_nprocs(); |
| WEBRTC_TRACE(kTraceStateInfo, kTraceUtility, -1, |
| "Available number of cores:%d", _numberOfCores); |
| |
| #elif (defined(WEBRTC_MAC) || defined(WEBRTC_MAC_INTEL)) |
| int name[] = {CTL_HW, HW_AVAILCPU}; |
| int ncpu; |
| size_t size = sizeof(ncpu); |
| if(0 == sysctl(name, 2, &ncpu, &size, NULL, 0)) |
| { |
| _numberOfCores = static_cast<WebRtc_UWord32>(ncpu); |
| WEBRTC_TRACE(kTraceStateInfo, kTraceUtility, -1, |
| "Available number of cores:%d", _numberOfCores); |
| } else |
| { |
| WEBRTC_TRACE(kTraceError, kTraceUtility, -1, |
| "Failed to get number of cores"); |
| _numberOfCores = 1; |
| } |
| #else |
| WEBRTC_TRACE(kTraceWarning, kTraceUtility, -1, |
| "No function to get number of cores"); |
| _numberOfCores = 1; |
| #endif |
| } |
| return _numberOfCores; |
| } |
| |
| } // namespace webrtc |