Panda3D
dtool
src
prc
configVariableFilename.cxx
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/**
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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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/**
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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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// NB. MSVC doesn't guarantee that this mutex is initialized in a
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// thread-safe manner. But chances are that the first time this is called
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// is at static init time, when there is no risk of data races.
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static
MutexImpl
lock;
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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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lock.unlock();
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}
ConfigDeclaration::get_filename_value
Filename get_filename_value() const
Interprets the string value as a filename and returns it, with any variables expanded.
Definition:
configDeclaration.cxx:141
executionEnvironment.h
PANDA 3D SOFTWARE Copyright (c) Carnegie Mellon University.
MutexDummyImpl
A fake mutex implementation for single-threaded applications that don't need any synchronization cont...
Definition:
mutexDummyImpl.h:24
ConfigDeclaration
A single declaration of a config variable, typically defined as one line in a .prc file,...
Definition:
configDeclaration.h:34
configVariableFilename.h
PANDA 3D SOFTWARE Copyright (c) Carnegie Mellon University.
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