init - 初始化项目

2022-05-06 01:58:53 +08:00
commit 90a5cc7cb6
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--- a/3rdparty/openexr/IlmThread/IlmThread.h
+++ b/3rdparty/openexr/IlmThread/IlmThread.h
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+///////////////////////////////////////////////////////////////////////////
+//
+// Copyright (c) 2005-2012, 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 INCLUDED_ILM_THREAD_H
+#define INCLUDED_ILM_THREAD_H
+
+//-----------------------------------------------------------------------------
+//
+//	class Thread
+//
+//	Class Thread is a portable interface to a system-dependent thread
+//	primitive.  In order to make a thread actually do something useful,
+//	you must derive a subclass from class Thread and implement the
+//	run() function.  If the operating system supports threading then
+//	the run() function will be executed int a new thread.
+//
+//	The actual creation of the thread is done by the start() routine
+//	which then calls the run() function.  In general the start()
+//	routine should be called from the constructor of the derived class.
+//
+//	The base-class thread destructor will join/destroy the thread.
+//
+//	IMPORTANT: Due to the mechanisms that encapsulate the low-level
+//	threading primitives in a C++ class there is a race condition
+//	with code resembling the following:
+//
+//	    {
+//		WorkerThread myThread;
+//	    } // myThread goes out of scope, is destroyed
+//	      // and the thread is joined
+//
+//	The race is between the parent thread joining the child thread
+//	in the destructor of myThread, and the run() function in the
+//	child thread.  If the destructor gets executed first then run()
+//	will be called with an invalid "this" pointer.
+//
+//	This issue can be fixed by using a Semaphore to keep track of
+//	whether the run() function has already been called.  You can
+//	include a Semaphore member variable within your derived class
+//	which you post() on in the run() function, and wait() on in the
+//	destructor before the thread is joined.  Alternatively you could
+//	do something like this:
+//
+//	    Semaphore runStarted;
+//
+//	    void WorkerThread::run ()
+//	    {
+//		runStarted.post()
+//		// do some work
+//		...
+//	    }
+//
+//	    {
+//		WorkerThread myThread;
+//		runStarted.wait ();    // ensure that we have started
+//				       // the run function
+//	    } // myThread goes out of scope, is destroyed
+//	      // and the thread is joined
+//
+//-----------------------------------------------------------------------------
+
+#include "IlmBaseConfig.h"
+#include "IlmThreadExport.h"
+#include "IlmThreadNamespace.h"
+
+#ifdef ILMBASE_FORCE_CXX03
+#   if defined _WIN32 || defined _WIN64
+#       ifdef NOMINMAX
+#          undef NOMINMAX
+#       endif
+#       define NOMINMAX
+#       include <windows.h>
+#       include <process.h>
+#   elif HAVE_PTHREAD
+#      include <pthread.h>
+#   endif
+#else
+#   include <thread>
+#endif
+
+ILMTHREAD_INTERNAL_NAMESPACE_HEADER_ENTER
+
+//
+// Query function to determine if the current platform supports
+// threads AND this library was compiled with threading enabled.
+//
+
+ILMTHREAD_EXPORT bool supportsThreads ();
+
+
+class Thread
+{
+  public:
+
+    ILMTHREAD_EXPORT Thread ();
+    ILMTHREAD_EXPORT virtual ~Thread ();
+
+    ILMTHREAD_EXPORT void         start ();
+    ILMTHREAD_EXPORT virtual void run () = 0;
+
+  private:
+
+#ifdef ILMBASE_FORCE_CXX03
+#   if defined _WIN32 || defined _WIN64
+	HANDLE _thread;
+#   elif HAVE_PTHREAD
+	pthread_t _thread;
+#   endif
+    void operator = (const Thread& t);	// not implemented
+    Thread (const Thread& t);		// not implemented
+#else
+    std::thread _thread;
+
+    Thread &operator= (const Thread& t) = delete;
+    Thread (const Thread& t) = delete;
+#endif
+};
+
+
+ILMTHREAD_INTERNAL_NAMESPACE_HEADER_EXIT
+
+#endif // INCLUDED_ILM_THREAD_H