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cs440-acg/ext/openexr/PyIlmBase/PyImath/PyImathTask.h

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+///////////////////////////////////////////////////////////////////////////
+//
+// Copyright (c) 2010-2011, Industrial Light & Magic, a division of Lucas
+// Digital Ltd. LLC
+// 
+// All rights reserved.
+// 
+// Redistribution and use in source and binary forms, with or without
+// modification, are permitted provided that the following conditions are
+// met:
+// *       Redistributions of source code must retain the above copyright
+// notice, this list of conditions and the following disclaimer.
+// *       Redistributions in binary form must reproduce the above
+// copyright notice, this list of conditions and the following disclaimer
+// in the documentation and/or other materials provided with the
+// distribution.
+// *       Neither the name of Industrial Light & Magic nor the names of
+// its contributors may be used to endorse or promote products derived
+// from this software without specific prior written permission. 
+// 
+// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+// "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+// LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
+// A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
+// OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+// SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
+// LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
+// DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
+// THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+// (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
+// OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+//
+///////////////////////////////////////////////////////////////////////////
+
+#ifndef _PyImathTask_h_
+#define _PyImathTask_h_
+
+#include <PyImathExport.h>
+#include <unistd.h>
+
+namespace PyImath {
+
+struct PYIMATH_EXPORT Task
+{
+    virtual ~Task() {}
+    virtual void execute(size_t start,size_t end) = 0;
+    virtual void execute(size_t start,size_t end, int tid) {execute(start,end);}
+};
+
+struct PYIMATH_EXPORT WorkerPool
+{
+    virtual ~WorkerPool() {}
+    virtual size_t workers() const = 0;
+    virtual void dispatch(Task &task,size_t length) = 0;
+    virtual bool inWorkerThread() const = 0;
+
+    static WorkerPool *currentPool();
+    static void setCurrentPool(WorkerPool *pool);
+};
+
+PYIMATH_EXPORT void dispatchTask(Task &task,size_t length);
+PYIMATH_EXPORT size_t workers();
+
+}
+
+#endif