1 files changed, 69 insertions, 0 deletions
diff --git a/src/libgit2/cache.h b/src/libgit2/cache.h
new file mode 100644
index 000000000..42c4fa80d
--- /dev/null
+++ b/src/libgit2/cache.h
@@ -0,0 +1,69 @@
+/*
+ * Copyright (C) the libgit2 contributors. All rights reserved.
+ *
+ * This file is part of libgit2, distributed under the GNU GPL v2 with
+ * a Linking Exception. For full terms see the included COPYING file.
+ */
+#ifndef INCLUDE_cache_h__
+#define INCLUDE_cache_h__
+
+#include "common.h"
+
+#include "git2/common.h"
+#include "git2/oid.h"
+#include "git2/odb.h"
+
+#include "thread.h"
+#include "oidmap.h"
+
+enum {
+	GIT_CACHE_STORE_ANY = 0,
+	GIT_CACHE_STORE_RAW = 1,
+	GIT_CACHE_STORE_PARSED = 2
+};
+
+typedef struct {
+	git_oid      oid;
+	int16_t      type;  /* git_object_t value */
+	uint16_t     flags; /* GIT_CACHE_STORE value */
+	size_t       size;
+	git_atomic32 refcount;
+} git_cached_obj;
+
+typedef struct {
+	git_oidmap *map;
+	git_rwlock  lock;
+	ssize_t     used_memory;
+} git_cache;
+
+extern bool git_cache__enabled;
+extern ssize_t git_cache__max_storage;
+extern git_atomic_ssize git_cache__current_storage;
+
+int git_cache_set_max_object_size(git_object_t type, size_t size);
+
+int git_cache_init(git_cache *cache);
+void git_cache_dispose(git_cache *cache);
+void git_cache_clear(git_cache *cache);
+
+void *git_cache_store_raw(git_cache *cache, git_odb_object *entry);
+void *git_cache_store_parsed(git_cache *cache, git_object *entry);
+
+git_odb_object *git_cache_get_raw(git_cache *cache, const git_oid *oid);
+git_object *git_cache_get_parsed(git_cache *cache, const git_oid *oid);
+void *git_cache_get_any(git_cache *cache, const git_oid *oid);
+
+GIT_INLINE(size_t) git_cache_size(git_cache *cache)
+{
+	return (size_t)git_oidmap_size(cache->map);
+}
+
+GIT_INLINE(void) git_cached_obj_incref(void *_obj)
+{
+	git_cached_obj *obj = _obj;
+	git_atomic32_inc(&obj->refcount);
+}
+
+void git_cached_obj_decref(void *_obj);
+
+#endif