SH-3280 Better init/shutdown functionality for llcorehttp by llappviewer

Isolate llcorehttp initialization into a utility class (LLAppCoreHttp)
that provides glue between app and library (sets up policies, handles
notifications).  Introduce 'TextureFetchConcurrency' debug setting to
provide some field control when absolutely necessary.

1 files changed, 86 insertions, 0 deletions

diff --git a/indra/newview/llappcorehttp.h b/indra/newview/llappcorehttp.h
new file mode 100644
index 0000000000..241d73ad52
--- /dev/null
+++ b/indra/newview/llappcorehttp.h
@@ -0,0 +1,86 @@
+/**
+ * @file llappcorehttp.h
+ * @brief Singleton initialization/shutdown class for llcorehttp library
+ *
+ * $LicenseInfo:firstyear=2012&license=viewerlgpl$
+ * 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_APP_COREHTTP_H_
+#define	_LL_APP_COREHTTP_H_
+
+
+#include "httprequest.h"
+#include "httphandler.h"
+#include "httpresponse.h"
+
+
+// This class manages the lifecyle of the core http library.
+// Slightly different style than traditional code but reflects
+// the use of handler classes and light-weight interface
+// object instances of the new libraries.  To be used
+// as a singleton and static construction is fine.
+class LLAppCoreHttp : public LLCore::HttpHandler
+{
+public:
+	LLAppCoreHttp();
+	~LLAppCoreHttp();
+	
+	// Initialize the LLCore::HTTP library creating service classes
+	// and starting the servicing thread.  Caller is expected to do
+	// other initializations (SSL mutex, thread hash function) appropriate
+	// for the application.
+	void init();
+
+	// Request that the servicing thread stop servicing requests,
+	// release resource references and stop.  Request is asynchronous
+	// and @see cleanup() will perform a limited wait loop for this
+	// request to stop the thread.
+	void requestStop();
+	
+	// Terminate LLCore::HTTP library services.  Caller is expected
+	// to have made a best-effort to shutdown the servicing thread
+	// by issuing a requestThreadStop() and waiting for completion
+	// notification that the stop has completed.
+	void cleanup();
+
+	// Notification when the stop request is complete.
+	virtual void onCompleted(LLCore::HttpHandle handle, LLCore::HttpResponse * response);
+
+	// Retrieve the policy class for default operations.
+	int getPolicyDefault() const
+		{
+			return mPolicyDefault;
+		}
+	
+private:
+	static const F64			MAX_THREAD_WAIT_TIME;
+	
+private:
+	LLCore::HttpRequest *		mRequest;
+	LLCore::HttpHandle			mStopHandle;
+	F64							mStopRequested;
+	bool						mStopped;
+	int							mPolicyDefault;
+};
+
+
+#endif	// _LL_APP_COREHTTP_H_