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diff --git a/dep/src/zthread/macos/ThreadOps.h b/dep/src/zthread/macos/ThreadOps.h
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+++ b/dep/src/zthread/macos/ThreadOps.h
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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 __ZTTHREADOPS_H__
+#define __ZTTHREADOPS_H__
+
+#include "zthread/Priority.h"
+
+#include <assert.h>
+#include <CoreServices/CoreServices.h>
+//#include <Multiprocessing.h>
+//#include <MultiprocessingInfo.h>
+
+namespace ZThread {
+
+class Runnable;
+ 
+/**
+ * @class ThreadOps
+ * @author Eric Crahen <http://www.code-foo.com>
+ * @date <2003-07-16T23:26:01-0400>
+ * @version 2.2.0
+ *
+ * This class is an abstraction used to perform various operations on a 
+ * native POSIX thread.
+ */
+class ThreadOps {
+
+  //! Keep track of the pthreads handle for the native thread
+  MPQueueID _queue;
+  MPTaskID  _tid;
+
+  ThreadOps(MPTaskID tid) : _queue(0), _tid(tid) { }
+
+  static OSStatus _dispatch(void*);
+
+public:
+
+  const static ThreadOps INVALID; 
+
+  /**
+   * Create a new ThreadOps to manipulate a native thread. 
+   */
+  ThreadOps();
+
+  ThreadOps(const ThreadOps& ops) : _queue(0), _tid(ops._tid) {}
+
+  ~ThreadOps() throw();
+
+  inline bool operator==(const ThreadOps& ops) const {
+    return ops._tid == _tid;
+  }
+
+  const ThreadOps& operator=(const ThreadOps& ops) {
+
+    assert(_queue == 0);
+    _tid = ops._tid;
+
+    return *this;
+
+  }
+
+  static ThreadOps self() {
+    return ThreadOps(MPCurrentTaskID());
+  }
+
+  /**
+   * Activating an instance of ThreadOps will map it onto the currently  
+   * executing thread.
+   */ 
+  static void activate(ThreadOps* ops) {
+
+    assert(ops);
+    assert(ops->_tid == 0);
+
+    ops->_tid = MPCurrentTaskID();
+    
+  }
+
+  /**
+   * Test if this object represents the currently executing 
+   * native thread.
+   *
+   * @return bool true if successful
+   */
+
+  static bool isCurrent(ThreadOps* ops) {
+
+    assert(ops);
+
+    return MPCurrentTaskID() == ops->_tid;
+
+  }
+
+  /**
+   * Join a native thread.
+   *
+   * @return bool true if successful
+   */
+  static bool join(ThreadOps*);
+
+  /**
+   * Force the current native thread to yield, letting the scheduler 
+   * give the CPU time to another thread.
+   *
+   * @return bool true if successful, false if the operation can't
+   * be supported.
+   */
+  static bool yield();
+
+  /**
+   * Set the priority for the native thread if supported by the 
+   * system.
+   *
+   * @param PRIORITY requested priority
+   * @return bool false if unsuccessful
+   */
+  static bool setPriority(ThreadOps*, Priority);
+
+  /**
+   * Set the priority for the native thread if supported by the 
+   * system.
+   *
+   * @param Thread::PRIORITY& current priority
+   * @return bool false if unsuccessful
+   */
+  static bool getPriority(ThreadOps*, Priority&);
+
+protected:
+
+  /**
+   * Spawn a native thread.
+   *
+   * @param ThreadImpl* parent thread
+   * @param ThreadImpl* child thread being started.
+   * @param Runnable* task being executed.
+   *
+   * @return bool true if successful
+   */
+  bool spawn(Runnable*);
+
+};
+
+
+}
+
+#endif // __ZTTHREADOPS_H__
+