SH-3563. Pull and merge from viewer-development. Modest code changes to fix alignment issue in llAppearance.

1 files changed, 123 insertions, 0 deletions

diff --git a/indra/llcorehttp/_thread.h b/indra/llcorehttp/_thread.h
new file mode 100644
index 0000000000..e058d660e5
--- /dev/null
+++ b/indra/llcorehttp/_thread.h
@@ -0,0 +1,123 @@
+/** 
+ * @file _thread.h
+ * @brief thread type abstraction
+ *
+ * $LicenseInfo:firstyear=2012&license=viewerlgpl$
+ * 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 LLCOREINT_THREAD_H_
+#define LLCOREINT_THREAD_H_
+
+#include "linden_common.h"
+
+#include <boost/thread.hpp>
+#include <boost/function.hpp>
+#include <boost/date_time/posix_time/posix_time_types.hpp>
+
+#include "_refcounted.h"
+
+namespace LLCoreInt
+{
+
+class HttpThread : public RefCounted
+{
+private:
+	HttpThread();							// Not defined
+	void operator=(const HttpThread &);		// Not defined
+
+	void at_exit()
+		{
+			// the thread function has exited so we need to release our reference
+			// to ourself so that we will be automagically cleaned up.
+			release();
+		}
+
+	void run()
+		{ // THREAD CONTEXT
+
+			// Take out additional reference for the at_exit handler
+			addRef();
+			boost::this_thread::at_thread_exit(boost::bind(&HttpThread::at_exit, this));
+
+			// run the thread function
+			mThreadFunc(this);
+
+		} // THREAD CONTEXT
+
+protected:
+	virtual ~HttpThread()
+		{
+			delete mThread;
+		}
+
+public:
+	/// Constructs a thread object for concurrent execution but does
+	/// not start running.  Caller receives on refcount on the thread
+	/// instance.  If the thread is started, another will be taken
+	/// out for the exit handler.
+	explicit HttpThread(boost::function<void (HttpThread *)> threadFunc)
+		: RefCounted(true), // implicit reference
+		  mThreadFunc(threadFunc)
+		{
+			// this creates a boost thread that will call HttpThread::run on this instance
+			// and pass it the threadfunc callable...
+			boost::function<void()> f = boost::bind(&HttpThread::run, this);
+
+			mThread = new boost::thread(f);
+		}
+
+	inline void join()
+		{
+			mThread->join();
+		}
+
+	inline bool timedJoin(S32 millis)
+		{
+			return mThread->timed_join(boost::posix_time::milliseconds(millis));
+		}
+
+	inline bool joinable() const
+		{
+			return mThread->joinable();
+		}
+
+	// A very hostile method to force a thread to quit
+	inline void cancel()
+		{
+			boost::thread::native_handle_type thread(mThread->native_handle());
+#if		LL_WINDOWS
+			TerminateThread(thread, 0);
+#else
+			pthread_cancel(thread);
+#endif
+		}
+	
+private:
+	boost::function<void(HttpThread *)> mThreadFunc;
+	boost::thread * mThread;
+}; // end class HttpThread
+
+} // end namespace LLCoreInt
+
+#endif // LLCOREINT_THREAD_H_
+
+