- initial import

src/libs/webrtc/system_wrappers/cpu.cc

@@ -0,0 +1,87 @@
+/*
+ *  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