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Thread safety fix for decoding quadkeys to coordinates

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This commit is contained in:
Eric Fischer 2018-05-18 14:45:03 -07:00
parent 5494b7da3d
commit 02cb3a3fb8
1 changed files with 4 additions and 3 deletions
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7
projection.cpp
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@ -2,6 +2,7 @@
#include <string.h>
#include <stdlib.h>
#include <math.h>
#include <atomic>
#include "projection.hpp"
struct projection projections[] = {
@ -107,11 +108,11 @@ unsigned long long encode(unsigned int wx, unsigned int wy) {
return out;
}
static unsigned char decodex[256];
static unsigned char decodey[256];
static std::atomic<unsigned char> decodex[256];
static std::atomic<unsigned char> decodey[256];
void decode(unsigned long long index, unsigned *wx, unsigned *wy) {
static int initialized = 0;
static std::atomic<int> initialized(0);
if (!initialized) {
for (size_t ix = 0; ix < 256; ix++) {
size_t xx = 0, yy = 0;