[core] De-mutex GlyphAtlas and SpriteAtlas

 - Expose glyph and icon information to workers via message interface.
 - Glyph/SpriteAtlas track which tiles have outstanding requests
    and send messages to them when glyphs/icons become available.
 - Remove obsolete "updateSymbolDependentTiles" pathway
 - Symbol preparation for a tile now depends on all glyphs becoming
    available before it can start.
 - Start tracking individual icons needed for a tile, although we don't
    do anything with the information yet.
 - Introduce typedef for GlyphID

1 files changed, 0 insertions, 27 deletions

diff --git a/src/mbgl/util/exclusive.hpp b/src/mbgl/util/exclusive.hpp
deleted file mode 100644
index 844588dc90..0000000000
--- a/src/mbgl/util/exclusive.hpp
+++ /dev/null
@@ -1,27 +0,0 @@
-#pragma once
-
-#include <memory>
-#include <mutex>
-
-
-namespace mbgl {
-namespace util {
-
-template <class T>
-class exclusive {
-public:
-    exclusive(T* val, std::unique_ptr<std::lock_guard<std::mutex>> mtx) : ptr(val), lock(std::move(mtx)) {}
-
-    T* operator->() { return ptr; }
-    const T* operator->() const { return ptr; }
-    T* operator*() { return ptr; }
-    const T* operator*() const { return ptr; }
-
-private:
-    T *ptr;
-    std::unique_ptr<std::lock_guard<std::mutex>> lock;
-};
-
-
-} // end namespace util
-} // end namespace mbgl