gsoc-pack-objects WIP

1 files changed, 85 insertions, 0 deletions

diff --git a/src/pack-objects.h b/src/pack-objects.h
new file mode 100644
index 000000000..971b30217
--- /dev/null
+++ b/src/pack-objects.h
@@ -0,0 +1,85 @@
+/*
+ * Copyright (C) 2009-2012 the libgit2 contributors
+ *
+ * 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_pack_objects_h__
+#define INCLUDE_pack_objects_h__
+
+#include "common.h"
+
+#include "buffer.h"
+#include "hash.h"
+
+#include "git2/oid.h"
+
+#define GIT_PACK_WINDOW 10 /* number of objects to possibly delta against */
+#define GIT_PACK_DEPTH 50 /* max delta depth */
+#define GIT_PACK_DELTA_CACHE_SIZE (256 * 1024 * 1024)
+#define GIT_PACK_DELTA_CACHE_LIMIT 1000
+#define GIT_PACK_BIG_FILE_THRESHOLD (512 * 1024 * 1024)
+
+typedef struct git_pobject {
+	git_oid id;
+	git_otype type;
+	git_off_t offset;
+
+	size_t size;
+
+	unsigned int hash; /* name hint hash */
+
+	struct git_pobject *delta; /* delta base object */
+	struct git_pobject *delta_child; /* deltified objects who bases me */
+	struct git_pobject *delta_sibling; /* other deltified objects
+					    * who uses the same base as
+					    * me */
+
+	void *delta_data;
+	unsigned long delta_size;
+	unsigned long z_delta_size;
+
+	int written:1,
+	    recursing:1,
+	    no_try_delta:1,
+	    tagged:1,
+	    filled:1;
+} git_pobject;
+
+struct git_packbuilder {
+	git_repository *repo; /* associated repository */
+	git_odb *odb; /* associated object database */
+
+	git_hash_ctx *ctx;
+
+	uint32_t nr_objects,
+		 nr_alloc,
+		 nr_written,
+		 nr_remaining;
+
+	git_pobject *object_list;
+
+	int *object_ix;
+	int object_ix_hashsz;
+
+
+	git_oid pack_oid; /* hash of written pack */
+
+	/* configs */
+	unsigned long delta_cache_size;
+	unsigned long max_delta_cache_size;
+	unsigned long cache_max_small_delta_size;
+	unsigned long big_file_threshold;
+	unsigned long window_memory_limit;
+
+	int nr_threads; /* nr of threads to use */
+
+	bool done;
+};
+
+
+int git_packbuilder_send(git_packbuilder *pb, git_transport *t);
+int git_packbuilder_write_buf(git_buf *buf, git_packbuilder *pb);
+
+#endif