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authorNeo2003 <none@none>2008-10-02 16:23:55 -0500
committerNeo2003 <none@none>2008-10-02 16:23:55 -0500
commit9b1c0e006f20091f28f3f468cfcab1feb51286bd (patch)
treeb5d1ba94a656e6679f8737f9ea6bed1239b73b14 /dep/include/zthread/ThreadedExecutor.h
[svn] * Proper SVN structureinit
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+/*
+ * Copyright (c) 2005, Eric Crahen
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining a copy
+ * of this software and associated documentation files (the "Software"), to deal
+ * in the Software without restriction, including without limitation the rights
+ * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+ * copies of the Software, and to permit persons to whom the Software is furnished
+ * to do so, subject to the following conditions:
+ *
+ * The above copyright notice and this permission notice shall be included in all
+ * copies or substantial portions of the Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+ * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+ * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY,
+ * WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
+ * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
+ *
+ */
+
+#ifndef __ZTTHREADEDEXECUTOR_H__
+#define __ZTTHREADEDEXECUTOR_H__
+
+#include "zthread/Executor.h"
+#include "zthread/CountedPtr.h"
+
+namespace ZThread {
+
+ namespace { class ExecutorImpl; }
+
+ /**
+ * @class ThreadedExecutor
+ *
+ * @author Eric Crahen <http://www.code-foo.com>
+ * @date <2003-07-16T22:39:13-0400>
+ * @version 2.3.0
+ *
+ * A ThreadedExecutor spawns a new thread to execute each task submitted.
+ * A ThreadedExecutor supports the following optional operations,
+ *
+ * - <em>cancel</em>()ing a ThreadedExecutor will cause it to stop accepting
+ * new tasks.
+ *
+ * - <em>interrupt</em>()ing a ThreadedExecutor will cause the any thread running
+ * a task which was submitted prior to the invocation of this function to
+ * be interrupted during the execution of that task.
+ *
+ * - <em>wait</em>()ing on a ThreadedExecutor will block the calling thread
+ * until all tasks that were submitted prior to the invocation of this function
+ * have completed.
+ *
+ * @see Executor.
+ */
+ class ThreadedExecutor : public Executor {
+
+ CountedPtr< ExecutorImpl > _impl;
+
+ public:
+
+ //! Create a new ThreadedExecutor
+ ThreadedExecutor();
+
+ //! Destroy a ThreadedExecutor
+ virtual ~ThreadedExecutor();
+
+ /**
+ * Interrupting a ThreadedExecutor will cause an interrupt() to be sent
+ * to every Task that has been submitted at the time this function is
+ * called. Tasks that are submitted after this function is called will
+ * not be interrupt()ed; unless this function is invoked again().
+ */
+ virtual void interrupt();
+
+ /**
+ * Submit a task to this Executor. This will not block the current thread
+ * for very long. A new thread will be created and the task will be run()
+ * within the context of that new thread.
+ *
+ * @exception Cancellation_Exception thrown if this Executor has been canceled.
+ * The Task being submitted will not be executed by this Executor.
+ *
+ * @see Executor::execute(const Task&)
+ */
+ virtual void execute(const Task&);
+
+ /**
+ * @see Cancelable::cancel()
+ */
+ virtual void cancel();
+
+ /**
+ * @see Cancelable::isCanceled()
+ */
+ virtual bool isCanceled();
+
+ /**
+ * Waiting on a ThreadedExecutor will block the current thread until all
+ * tasks submitted to the Executor up until the time this function was called
+ * have completed.
+ *
+ * Tasks submitted after this function is called will not delay a thread that
+ * was already waiting on the Executor any longer. In order to wait for
+ * those tasks to complete as well, another wait() would be needed.
+ *
+ * @exception Interrupted_Exception thrown if the calling thread is interrupted
+ * before the set of tasks for which it was waiting complete.
+ *
+ * @see Waitable::wait()
+ */
+ virtual void wait();
+
+ /**
+ * Operates the same as ThreadedExecutor::wait() but with a timeout.
+ *
+ * @param timeout maximum amount of time, in milliseconds, to wait for the
+ * currently submitted set of Tasks to complete.
+ *
+ * @exception Interrupted_Exception thrown if the calling thread is interrupt()ed
+ * while waiting for the current set of Tasks to complete.
+ *
+ * @return
+ * - <em>true</em> if the set of tasks running at the time this function is invoked complete
+ * before <i>timeout</i> milliseconds elapse.
+ * - <em>false</em> othewise.
+ *
+ * @see Waitable::wait(unsigned long timeout)
+ */
+ virtual bool wait(unsigned long timeout);
+
+ }; /* ThreadedExecutor */
+
+} // namespace ZThread
+
+#endif // __ZTTHREADEDEXECUTOR_H__