Panda3D
dtool
src
prc
configVariableString.cxx
Go to the documentation of this file.
1
/**
2
* PANDA 3D SOFTWARE
3
* Copyright (c) Carnegie Mellon University. All rights reserved.
4
*
5
* All use of this software is subject to the terms of the revised BSD
6
* license. You should have received a copy of this license along
7
* with this source code in a file named "LICENSE."
8
*
9
* @file configVariableString.cxx
10
* @author drose
11
* @date 2004-10-20
12
*/
13
14
#include "
configVariableString.h
"
15
16
/**
17
* Refreshes the variable's cached value.
18
*/
19
void
ConfigVariableString::
20
reload_cache() {
21
// NB. MSVC doesn't guarantee that this mutex is initialized in a
22
// thread-safe manner. But chances are that the first time this is called
23
// is at static init time, when there is no risk of data races.
24
static
MutexImpl
lock;
25
lock.lock();
26
27
// We check again for cache validity since another thread may have beaten
28
// us to the punch while we were waiting for the lock.
29
if
(!is_cache_valid(_local_modified)) {
30
_cache =
get_string_value
();
31
mark_cache_valid(_local_modified);
32
}
33
34
lock.unlock();
35
}
ConfigVariable::get_string_value
const std::string & get_string_value() const
Returns the toplevel value of the variable, formatted as a string.
Definition:
configVariable.I:68
MutexDummyImpl
A fake mutex implementation for single-threaded applications that don't need any synchronization cont...
Definition:
mutexDummyImpl.h:24
configVariableString.h
PANDA 3D SOFTWARE Copyright (c) Carnegie Mellon University.
Generated on Mon Sep 14 2020 15:06:43 for Panda3D by
1.8.20