1 files changed, 34 insertions, 0 deletions
diff --git a/platform/winrt/mupdfwinrt/Cache.h b/platform/winrt/mupdfwinrt/Cache.h
new file mode 100644
index 00000000..0763dba4
--- /dev/null
+++ b/platform/winrt/mupdfwinrt/Cache.h
@@ -0,0 +1,34 @@
+#pragma once
+
+#include <mutex>
+extern "C" {
+	#include "mupdf/fitz.h"
+}
+
+#define MAX_DISPLAY_CACHE_SIZE 3
+
+typedef struct cache_entry_s cache_entry_t;
+
+struct cache_entry_s
+{
+	fz_display_list *dlist;
+	cache_entry_t *next;
+	cache_entry_t *prev;
+	int index;
+};
+
+class Cache
+{
+private:
+	int size;
+	cache_entry_t *head;
+	cache_entry_t *tail;
+	std::mutex cache_lock;
+
+public:
+	Cache(void);
+	~Cache(void);
+	fz_display_list* UseEntry(int value, fz_context *mu_ctx);
+	void AddEntry(int value, fz_display_list *dlist, fz_context *mu_ctx);
+	void Empty(fz_context *mu_ctx);
+};