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-rw-r--r--src/util/numeric.cpp4
-rw-r--r--src/util/numeric.h2
2 files changed, 6 insertions, 0 deletions
diff --git a/src/util/numeric.cpp b/src/util/numeric.cpp
index 4ddfede92..3fd1c9cf9 100644
--- a/src/util/numeric.cpp
+++ b/src/util/numeric.cpp
@@ -23,13 +23,17 @@ with this program; if not, write to the Free Software Foundation, Inc.,
#include "log.h"
#include "../constants.h" // BS, MAP_BLOCKSIZE
#include "../noise.h" // PseudoRandom, PcgRandom
+#include "../jthread/jmutexautolock.h"
#include <string.h>
#include <iostream>
std::map<u16, std::vector<v3s16> > FacePositionCache::m_cache;
+JMutex FacePositionCache::m_cache_mutex;
// Calculate the borders of a "d-radius" cube
+// TODO: Make it work without mutex and data races, probably thread-local
std::vector<v3s16> FacePositionCache::getFacePositions(u16 d)
{
+ JMutexAutoLock cachelock(m_cache_mutex);
if (m_cache.find(d) != m_cache.end())
return m_cache[d];
diff --git a/src/util/numeric.h b/src/util/numeric.h
index 0eba01359..9fe08434f 100644
--- a/src/util/numeric.h
+++ b/src/util/numeric.h
@@ -24,6 +24,7 @@ with this program; if not, write to the Free Software Foundation, Inc.,
#include "../irr_v2d.h"
#include "../irr_v3d.h"
#include "../irr_aabb3d.h"
+#include "../jthread/jmutex.h"
#include <list>
#include <map>
#include <vector>
@@ -41,6 +42,7 @@ public:
private:
static void generateFacePosition(u16 d);
static std::map<u16, std::vector<v3s16> > m_cache;
+ static JMutex m_cache_mutex;
};
class IndentationRaiser