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e03df54e33bf2807f4a1acd4c4a1c129928719af blob 2122 bytes (raw)

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#ifndef COMMIT_GRAPH_H
#define COMMIT_GRAPH_H

#include "git-compat-util.h"
#include "repository.h"
#include "string-list.h"
#include "cache.h"

#define GIT_TEST_COMMIT_GRAPH "GIT_TEST_COMMIT_GRAPH"

struct commit;

char *get_commit_graph_filename(const char *obj_dir);

/*
 * Given a commit struct, try to fill the commit struct info, including:
 *  1. tree object
 *  2. date
 *  3. parents.
 *
 * Returns 1 if and only if the commit was found in the packed graph.
 *
 * See parse_commit_buffer() for the fallback after this call.
 */
int parse_commit_in_graph(struct repository *r, struct commit *item);

/*
 * It is possible that we loaded commit contents from the commit buffer,
 * but we also want to ensure the commit-graph content is correctly
 * checked and filled. Fill the graph_pos and generation members of
 * the given commit.
 */
void load_commit_graph_info(struct repository *r, struct commit *item);

struct tree *get_commit_tree_in_graph(struct repository *r,
				      const struct commit *c);

struct commit_graph {
	int graph_fd;

	const unsigned char *data;
	size_t data_len;

	unsigned char hash_len;
	unsigned char num_chunks;
	uint32_t num_commits;
	struct object_id oid;

	const uint32_t *chunk_oid_fanout;
	const unsigned char *chunk_oid_lookup;
	const unsigned char *chunk_commit_data;
	const unsigned char *chunk_extra_edges;
};

struct commit_graph *load_commit_graph_one(const char *graph_file);

/*
 * Return 1 if and only if the repository has a commit-graph
 * file and generation numbers are computed in that file.
 */
int generation_numbers_enabled(struct repository *r);

#define COMMIT_GRAPH_APPEND     (1 << 0)
#define COMMIT_GRAPH_PROGRESS   (1 << 1)
#define COMMIT_GRAPH_VERSION_1  (1 << 2)

int write_commit_graph_reachable(const char *obj_dir, int flags);
int write_commit_graph(const char *obj_dir,
		       struct string_list *pack_indexes,
		       struct string_list *commit_hex,
		       int flags);

int verify_commit_graph(struct repository *r, struct commit_graph *g);

void close_commit_graph(struct repository *);
void free_commit_graph(struct commit_graph *);

#endif
debug log:

solving e03df54e33 ...
found e03df54e33 in https://public-inbox.org/git/39319e36bc35dc89aff7640a11c0819c3bce8b2f.1548280753.git.gitgitgadget@gmail.com/
found 83fa548138 in https://public-inbox.org/git/43a40d0c43a1402a047b8c329ae8448643bedcce.1548280753.git.gitgitgadget@gmail.com/
found cd333a0cd0 in https://public-inbox.org/git/e72498d0c5dbc32fd04ecef611fe196ef815a2d7.1548280753.git.gitgitgadget@gmail.com/
found e6aff2c2e1 in https://80x24.org/mirrors/git.git
preparing index
index prepared:
100644 e6aff2c2e1042f26b0798051391f671591d30484	commit-graph.h

applying [1/3] https://public-inbox.org/git/e72498d0c5dbc32fd04ecef611fe196ef815a2d7.1548280753.git.gitgitgadget@gmail.com/
diff --git a/commit-graph.h b/commit-graph.h
index e6aff2c2e1..cd333a0cd0 100644


applying [2/3] https://public-inbox.org/git/43a40d0c43a1402a047b8c329ae8448643bedcce.1548280753.git.gitgitgadget@gmail.com/
diff --git a/commit-graph.h b/commit-graph.h
index cd333a0cd0..83fa548138 100644


applying [3/3] https://public-inbox.org/git/39319e36bc35dc89aff7640a11c0819c3bce8b2f.1548280753.git.gitgitgadget@gmail.com/
diff --git a/commit-graph.h b/commit-graph.h
index 83fa548138..e03df54e33 100644

Checking patch commit-graph.h...
Applied patch commit-graph.h cleanly.
Checking patch commit-graph.h...
Applied patch commit-graph.h cleanly.
Checking patch commit-graph.h...
Applied patch commit-graph.h cleanly.

index at:
100644 e03df54e33bf2807f4a1acd4c4a1c129928719af	commit-graph.h

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