diff options
Diffstat (limited to 'indra/llcorehttp/_thread.h')
-rw-r--r-- | indra/llcorehttp/_thread.h | 123 |
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_ + + |