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+/**
+ * @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_
+
+