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Use the same locking algorithm like in IMG/Mapsforge maps

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This commit is contained in:
Martin Tůma 2024-12-03 20:25:38 +01:00
parent 240ddaf39c
commit d3889b6dfe
1 changed files with 7 additions and 15 deletions
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14
src/map/ENC/atlasdata.cpp
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@ -6,31 +6,23 @@ bool AtlasData::pointCb(MapEntry *map, void *context)
{
PointCTX *ctx = (PointCTX*)context;
start:
map->lock.lock();
ctx->cacheLock.lock();
MapData *cached = ctx->cache.object(map->path);
if (!cached) {
ctx->cacheLock.unlock();
if (map->lock.tryLock()) {
MapData *data = new MapData(map->path);
data->points(ctx->rect, ctx->points);
ctx->cacheLock.lock();
ctx->cache.insert(map->path, data);
map->lock.unlock();
} else {
map->lock.lock();
map->lock.unlock();
goto start;
}
} else
cached->points(ctx->rect, ctx->points);
ctx->cacheLock.unlock();
map->lock.unlock();
return true;
}