blob: 85d029f22804e138ba85241fb6044dba3c2df988 [file] [log] [blame]
/*
* 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