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/*
* 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_wrapper.h"
#if defined(_WIN32)
#include <Windows.h>
#include "engine_configurations.h"
#include "cpu_windows.h"
#elif defined(WEBRTC_MAC)
#include <sys/types.h>
#include <sys/sysctl.h>
#include "cpu_mac.h"
#elif defined(WEBRTC_MAC_INTEL)
#include "cpu_mac.h"
#elif defined(ANDROID)
// Not implemented yet, might be possible to use Linux implementation
#else // defined(WEBRTC_LINUX)
#include <sys/sysinfo.h>
#include "cpu_linux.h"
#endif
#include "trace.h"
namespace webrtc {
WebRtc_UWord32 CpuWrapper::_numberOfCores = 0;
WebRtc_UWord32 CpuWrapper::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(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;
}
CpuWrapper* CpuWrapper::CreateCpu()
{
#if defined(_WIN32)
return new CpuWindows();
#elif (defined(WEBRTC_MAC) || defined(WEBRTC_MAC_INTEL))
return new CpuWrapperMac();
#elif defined(ANDROID)
return 0;
#else
return new CpuLinux();
#endif
}
} // namespace webrtc
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