git-svn-id: http://webrtc.googlecode.com/svn/trunk@6 4adac7df-926f-26a2-2b94-8c16560cd09d
diff --git a/system_wrappers/source/cpu_windows.h b/system_wrappers/source/cpu_windows.h
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+++ b/system_wrappers/source/cpu_windows.h
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+// This file contains a Windows implementation of CpuWrapper.
+// Note: Windows XP, Windows Server 2003 are the minimum requirements.
+// The requirements are due to the implementation being based on
+// WMI.
+/*
+ * 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.
+ */
+
+#ifndef WEBRTC_SYSTEM_WRAPPERS_SOURCE_CPU_WINDOWS_NO_CPOL_H_
+#define WEBRTC_SYSTEM_WRAPPERS_SOURCE_CPU_WINDOWS_NO_CPOL_H_
+
+#include "cpu_wrapper.h"
+
+#include <Wbemidl.h>
+
+namespace webrtc {
+class ConditionVariableWrapper;
+class CriticalSectionWrapper;
+class EventWrapper;
+class ThreadWrapper;
+
+class CpuWindows : public CpuWrapper
+{
+public:
+ virtual WebRtc_Word32 CpuUsage();
+ virtual WebRtc_Word32 CpuUsage(WebRtc_Word8* /*pProcessName*/,
+ WebRtc_UWord32 /*length*/) {return -1;}
+ virtual WebRtc_Word32 CpuUsage(WebRtc_UWord32 /*dwProcessID*/) {return -1;}
+
+ virtual WebRtc_Word32 CpuUsageMultiCore(WebRtc_UWord32& num_cores,
+ WebRtc_UWord32*& cpu_usage);
+
+ virtual void Reset() {}
+ virtual void Stop() {}
+
+ CpuWindows();
+ virtual ~CpuWindows();
+private:
+ bool AllocateComplexDataTypes();
+ void DeAllocateComplexDataTypes();
+
+ bool StartPollingCpu();
+ bool StopPollingCpu();
+
+ static bool Process(void* thread_object);
+ bool ProcessImpl();
+
+ bool CreateWmiConnection();
+ bool CreatePerfOsRefresher();
+ bool CreatePerfOsCpuHandles();
+ bool Initialize();
+ bool Terminate();
+
+ bool UpdateCpuUsage();
+
+ ThreadWrapper* cpu_polling_thread;
+
+ bool initialize_;
+ bool initialized_;
+ CriticalSectionWrapper* init_crit_;
+ ConditionVariableWrapper* init_cond_;
+
+ bool terminate_;
+ bool terminated_;
+ CriticalSectionWrapper* terminate_crit_;
+ ConditionVariableWrapper* terminate_cond_;
+
+ // For sleep with wake-up functionality.
+ EventWrapper* sleep_event;
+
+ // Will be an array. Just care about CPU 0 for now.
+ WebRtc_UWord32* cpu_usage_;
+
+ // One IWbemObjectAccess for each processor and one for the total.
+ // 0-n-1 is the individual processors.
+ // n is the total.
+ IWbemObjectAccess** wbem_enum_access_;
+ DWORD number_of_objects_;
+
+ // Cpu timestamp
+ long cpu_usage_handle_;
+ unsigned __int64* previous_processor_timestamp_;
+
+ // Timestamp
+ long timestamp_sys_100_ns_handle_;
+ unsigned __int64* previous_100ns_timestamp_;
+
+ IWbemServices* wbem_service_;
+
+ IWbemRefresher* wbem_refresher_;
+
+ IWbemHiPerfEnum* wbem_enum_;
+
+};
+} // namespace webrtc
+#endif // WEBRTC_SYSTEM_WRAPPERS_SOURCE_CPU_WINDOWS_NO_CPOL_H_