FilesExpand file tree

 master

/

commit-graph.h

Copy path

Blame

More file actions

Blame

More file actions

Latest commit

 

History

History

History

155 lines (129 loc) · 4.72 KB

 master

/

commit-graph.h

Copy path

Top

File metadata and controls

• Code
• Blame

155 lines (129 loc) · 4.72 KB

Raw

Copy raw file

Download raw file

Open symbols panel

Edit and raw actions

1

2

3

4

5

6

7

8

9

10

11

12

13

14

15

16

17

18

19

20

21

22

23

24

25

26

27

28

29

30

31

32

33

34

35

36

37

38

39

40

41

42

43

44

45

46

47

48

49

50

51

52

53

54

55

56

57

58

59

60

61

62

63

64

65

66

67

68

69

70

71

72

73

74

75

76

77

78

79

80

81

82

83

84

85

86

87

88

89

90

91

92

93

94

95

96

97

98

99

100

101

102

103

104

105

106

107

108

109

110

111

112

113

114

115

116

117

118

119

120

121

122

123

124

125

126

127

128

129

130

131

132

133

134

135

136

137

138

139

140

141

142

143

144

145

146

147

148

149

150

151

152

153

154

155

#ifndef COMMIT_GRAPH_H

#define COMMIT_GRAPH_H

#include "git-compat-util.h"

#include "object-store.h"

#include "oidset.h"

#define GIT_TEST_COMMIT_GRAPH "GIT_TEST_COMMIT_GRAPH"

#define GIT_TEST_COMMIT_GRAPH_DIE_ON_PARSE "GIT_TEST_COMMIT_GRAPH_DIE_ON_PARSE"

#define GIT_TEST_COMMIT_GRAPH_CHANGED_PATHS "GIT_TEST_COMMIT_GRAPH_CHANGED_PATHS"

/*

* This method is only used to enhance coverage of the commit-graph

* feature in the test suite with the GIT_TEST_COMMIT_GRAPH and

* GIT_TEST_COMMIT_GRAPH_CHANGED_PATHS environment variables. Do not

* call this method oustide of a builtin, and only if you know what

* you are doing!

*/

void git_test_write_commit_graph_or_die(void);

struct commit;

struct bloom_filter_settings;

struct repository;

struct raw_object_store;

struct string_list;

char *get_commit_graph_filename(struct object_directory *odb);

char *get_commit_graph_chain_filename(struct object_directory *odb);

int open_commit_graph(const char *graph_file, int *fd, struct stat *st);

/*

* 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 {

const unsigned char *data;

size_t data_len;

unsigned char hash_len;

unsigned char num_chunks;

uint32_t num_commits;

struct object_id oid;

char *filename;

struct object_directory *odb;

uint32_t num_commits_in_base;

struct commit_graph *base_graph;

const uint32_t *chunk_oid_fanout;

const unsigned char *chunk_oid_lookup;

const unsigned char *chunk_commit_data;

const unsigned char *chunk_extra_edges;

const unsigned char *chunk_base_graphs;

const unsigned char *chunk_bloom_indexes;

const unsigned char *chunk_bloom_data;

struct bloom_filter_settings *bloom_filter_settings;

};

struct commit_graph *load_commit_graph_one_fd_st(struct repository *r,

int fd, struct stat *st,

struct object_directory *odb);

struct commit_graph *read_commit_graph_one(struct repository *r,

struct object_directory *odb);

struct commit_graph *parse_commit_graph(struct repository *r,

void *graph_map, size_t graph_size);

/*

* 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);

struct bloom_filter_settings *get_bloom_filter_settings(struct repository *r);

enum commit_graph_write_flags {

COMMIT_GRAPH_WRITE_APPEND = (1 << 0),

COMMIT_GRAPH_WRITE_PROGRESS = (1 << 1),

COMMIT_GRAPH_WRITE_SPLIT = (1 << 2),

COMMIT_GRAPH_WRITE_BLOOM_FILTERS = (1 << 3),

COMMIT_GRAPH_NO_WRITE_BLOOM_FILTERS = (1 << 4),

};

enum commit_graph_split_flags {

COMMIT_GRAPH_SPLIT_UNSPECIFIED = 0,

COMMIT_GRAPH_SPLIT_MERGE_PROHIBITED = 1,

COMMIT_GRAPH_SPLIT_REPLACE = 2

};

struct commit_graph_opts {

int size_multiple;

int max_commits;

timestamp_t expire_time;

enum commit_graph_split_flags split_flags;

int max_new_filters;

};

/*

* The write_commit_graph* methods return zero on success

* and a negative value on failure. Note that if the repository

* is not compatible with the commit-graph feature, then the

* methods will return 0 without writing a commit-graph.

*/

int write_commit_graph_reachable(struct object_directory *odb,

enum commit_graph_write_flags flags,

const struct commit_graph_opts *opts);

int write_commit_graph(struct object_directory *odb,

struct string_list *pack_indexes,

struct oidset *commits,

enum commit_graph_write_flags flags,

const struct commit_graph_opts *opts);

#define COMMIT_GRAPH_VERIFY_SHALLOW (1 << 0)

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

void close_commit_graph(struct raw_object_store *);

void free_commit_graph(struct commit_graph *);

/*

* Disable further use of the commit graph in this process when parsing a

* "struct commit".

*/

void disable_commit_graph(struct repository *r);

struct commit_graph_data {

uint32_t graph_pos;

uint32_t generation;

};

/*

* Commits should be parsed before accessing generation, graph positions.

*/

uint32_t commit_graph_generation(const struct commit *);

uint32_t commit_graph_position(const struct commit *);

#endif