SH-3275 WIP Update viewer metrics system to be more flexible

moved threadrecorder classes into separate file
added Count trace type, which tracks value increases and decreases and can report churn
as well as overall growth rate

1 files changed, 124 insertions, 0 deletions

diff --git a/indra/llcommon/lltracethreadrecorder.h b/indra/llcommon/lltracethreadrecorder.h
new file mode 100644
index 0000000000..40441d0447
--- /dev/null
+++ b/indra/llcommon/lltracethreadrecorder.h
@@ -0,0 +1,124 @@
+/** 
+ * @file lltrace.h
+ * @brief Runtime statistics accumulation.
+ *
+ * $LicenseInfo:firstyear=2001&license=viewerlgpl$
+ * Second Life Viewer Source Code
+ * Copyright (C) 2012, Linden Research, Inc.
+ * 
+ * This library is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU Lesser General Public
+ * License as published by the Free Software Foundation;
+ * version 2.1 of the License only.
+ * 
+ * This library is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+ * Lesser General Public License for more details.
+ * 
+ * You should have received a copy of the GNU Lesser General Public
+ * License along with this library; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301  USA
+ * 
+ * Linden Research, Inc., 945 Battery Street, San Francisco, CA  94111  USA
+ * $/LicenseInfo$
+ */
+
+#ifndef LL_LLTRACETHREADRECORDER_H
+#define LL_LLTRACETHREADRECORDER_H
+
+#include "stdtypes.h"
+#include "llpreprocessor.h"
+
+#include "llmutex.h"
+#include "lltracerecording.h"
+
+namespace LLTrace
+{
+	class LL_COMMON_API ThreadRecorder
+	{
+	public:
+		ThreadRecorder();
+		ThreadRecorder(const ThreadRecorder& other);
+
+		virtual ~ThreadRecorder();
+
+		void activate(Recording* recording);
+		void deactivate(Recording* recording);
+
+		virtual void pushToMaster() = 0;
+
+		Recording* getPrimaryRecording();
+	protected:
+		struct ActiveRecording
+		{
+			ActiveRecording(Recording* source, Recording* target);
+
+			Recording*	mTargetRecording;
+			Recording	mBaseline;
+
+			void mergeMeasurements(ActiveRecording& other);
+			void flushAccumulators(Recording* current);
+		};
+		Recording*					mPrimaryRecording;
+		Recording					mFullRecording;
+		std::list<ActiveRecording>	mActiveRecordings;
+	};
+
+	class LL_COMMON_API MasterThreadRecorder : public ThreadRecorder
+	{
+	public:
+		MasterThreadRecorder();
+
+		void addSlaveThread(class SlaveThreadRecorder* child);
+		void removeSlaveThread(class SlaveThreadRecorder* child);
+
+		/*virtual */ void pushToMaster();
+
+		// call this periodically to gather stats data from slave threads
+		void pullFromSlaveThreads();
+
+		LLMutex* getSlaveListMutex() { return &mSlaveListMutex; }
+
+	private:
+		struct SlaveThreadRecorderProxy
+		{
+			SlaveThreadRecorderProxy(class SlaveThreadRecorder* recorder);
+
+			class SlaveThreadRecorder*	mRecorder;
+			Recording					mSlaveRecording;
+		private:
+			//no need to copy these and then have to duplicate the storage
+			SlaveThreadRecorderProxy(const SlaveThreadRecorderProxy& other) {}
+		};
+		typedef std::list<SlaveThreadRecorderProxy*> slave_thread_recorder_list_t;
+
+		slave_thread_recorder_list_t	mSlaveThreadRecorders;
+		LLMutex							mSlaveListMutex;
+	};
+
+	class LL_COMMON_API SlaveThreadRecorder : public ThreadRecorder
+	{
+	public:
+		SlaveThreadRecorder();
+		~SlaveThreadRecorder();
+
+		// call this periodically to gather stats data for master thread to consume
+		/*virtual*/ void pushToMaster();
+
+		MasterThreadRecorder* 	mMaster;
+
+		class SharedData
+		{
+		public:
+			void copyFrom(const Recording& source);
+			void copyTo(Recording& sink);
+		private:
+			LLMutex		mRecorderMutex;
+			Recording	mRecorder;
+		};
+		SharedData		mSharedData;
+	};
+}
+
+#endif // LL_LLTRACETHREADRECORDER_H