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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 20:20:40 +01:00
parent 53685253d7
commit 240ddaf39c
1 changed files with 8 additions and 16 deletions
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24
src/map/ENC/atlasdata.cpp
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@ -39,34 +39,26 @@ bool AtlasData::polyCb(MapEntry *map, void *context)
{
PolyCTX *ctx = (PolyCTX*)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->polygons(ctx->rect, ctx->polygons);
data->lines(ctx->rect, ctx->lines);
MapData *data = new MapData(map->path);
data->polygons(ctx->rect, ctx->polygons);
data->lines(ctx->rect, ctx->lines);
ctx->cacheLock.lock();
ctx->cache.insert(map->path, data);
map->lock.unlock();
} else {
map->lock.lock();
map->lock.unlock();
goto start;
}
ctx->cacheLock.lock();
ctx->cache.insert(map->path, data);
} else {
cached->polygons(ctx->rect, ctx->polygons);
cached->lines(ctx->rect, ctx->lines);
}
ctx->cacheLock.unlock();
map->lock.unlock();
return true;
}