38 lines
1.0 KiB
C++
38 lines
1.0 KiB
C++
/**
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* PANDA 3D SOFTWARE
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* Copyright (c) Carnegie Mellon University. All rights reserved.
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*
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* All use of this software is subject to the terms of the revised BSD
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* license. You should have received a copy of this license along
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* with this source code in a file named "LICENSE."
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*
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* @file configVariableFilename.cxx
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* @author drose
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* @date 2004-11-22
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*/
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#include "configVariableFilename.h"
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#include "executionEnvironment.h"
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#include "mutexImpl.h"
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static MutexImpl filename_lock;
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/**
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* Recopies the config variable into the Filename for returning its value.
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*/
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void ConfigVariableFilename::
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reload_cache() {
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filename_lock.lock();
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// We check again for cache validity since another thread may have beaten
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// us to the punch while we were waiting for the lock.
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if (!is_cache_valid(_local_modified)) {
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nassertv(_core != nullptr);
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const ConfigDeclaration *decl = _core->get_declaration(0);
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_cache = decl->get_filename_value();
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mark_cache_valid(_local_modified);
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}
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filename_lock.unlock();
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}
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